Annotation of mandoc/roff.c, Revision 1.387
1.387 ! schwarze 1: /* $Id: roff.c,v 1.386 2022/04/30 18:51:36 schwarze Exp $ */
1.1 kristaps 2: /*
1.381 schwarze 3: * Copyright (c) 2010-2015, 2017-2022 Ingo Schwarze <schwarze@openbsd.org>
1.267 schwarze 4: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.66 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.106 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.66 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.106 kristaps 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.66 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.372 schwarze 17: *
18: * Implementation of the roff(7) parser for mandoc(1).
1.1 kristaps 19: */
1.66 kristaps 20: #include "config.h"
1.225 schwarze 21:
22: #include <sys/types.h>
1.30 kristaps 23:
1.67 kristaps 24: #include <assert.h>
1.85 kristaps 25: #include <ctype.h>
1.245 schwarze 26: #include <limits.h>
1.295 schwarze 27: #include <stddef.h>
28: #include <stdint.h>
1.178 schwarze 29: #include <stdio.h>
1.1 kristaps 30: #include <stdlib.h>
1.67 kristaps 31: #include <string.h>
1.1 kristaps 32:
1.201 schwarze 33: #include "mandoc_aux.h"
1.295 schwarze 34: #include "mandoc_ohash.h"
1.345 schwarze 35: #include "mandoc.h"
1.265 schwarze 36: #include "roff.h"
1.349 schwarze 37: #include "mandoc_parse.h"
1.226 schwarze 38: #include "libmandoc.h"
1.266 schwarze 39: #include "roff_int.h"
1.346 schwarze 40: #include "tbl_parse.h"
1.347 schwarze 41: #include "eqn_parse.h"
1.82 kristaps 42:
1.355 schwarze 43: /*
44: * ASCII_ESC is used to signal from roff_getarg() to roff_expand()
45: * that an escape sequence resulted from copy-in processing and
46: * needs to be checked or interpolated. As it is used nowhere
47: * else, it is defined here rather than in a header file.
48: */
49: #define ASCII_ESC 27
50:
1.170 schwarze 51: /* Maximum number of string expansions per line, to break infinite loops. */
52: #define EXPAND_LIMIT 1000
53:
1.315 schwarze 54: /* Types of definitions of macros and strings. */
55: #define ROFFDEF_USER (1 << 1) /* User-defined. */
56: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
57: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
58: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
59: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
60: ROFFDEF_REN | ROFFDEF_STD)
1.325 schwarze 61: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 62:
1.266 schwarze 63: /* --- data types --------------------------------------------------------- */
64:
1.147 kristaps 65: /*
1.167 kristaps 66: * An incredibly-simple string buffer.
67: */
1.94 kristaps 68: struct roffstr {
1.167 kristaps 69: char *p; /* nil-terminated buffer */
70: size_t sz; /* saved strlen(p) */
1.166 kristaps 71: };
72:
73: /*
1.167 kristaps 74: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 75: */
76: struct roffkv {
77: struct roffstr key;
78: struct roffstr val;
79: struct roffkv *next; /* next in list */
1.94 kristaps 80: };
81:
1.180 schwarze 82: /*
83: * A single number register as part of a singly-linked list.
84: */
85: struct roffreg {
86: struct roffstr key;
1.181 schwarze 87: int val;
1.327 schwarze 88: int step;
1.180 schwarze 89: struct roffreg *next;
90: };
91:
1.295 schwarze 92: /*
93: * Association of request and macro names with token IDs.
94: */
95: struct roffreq {
96: enum roff_tok tok;
97: char name[];
98: };
99:
1.339 schwarze 100: /*
101: * A macro processing context.
102: * More than one is needed when macro calls are nested.
103: */
104: struct mctx {
105: char **argv;
106: int argc;
107: int argsz;
108: };
109:
1.67 kristaps 110: struct roff {
1.296 schwarze 111: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 112: struct roffnode *last; /* leaf of stack */
1.339 schwarze 113: struct mctx *mstack; /* stack of macro contexts */
1.223 schwarze 114: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 115: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 116: struct roffreg *regtab; /* number registers */
1.166 kristaps 117: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 118: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 119: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
120: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 121: const char *current_string; /* value of last called user macro */
1.118 kristaps 122: struct tbl_node *first_tbl; /* first table parsed */
123: struct tbl_node *last_tbl; /* last table parsed */
124: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 125: struct eqn_node *last_eqn; /* equation parser */
126: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 127: int eqn_inline; /* current equation is inline */
1.223 schwarze 128: int options; /* parse options */
1.339 schwarze 129: int mstacksz; /* current size of mstack */
130: int mstackpos; /* position in mstack */
1.223 schwarze 131: int rstacksz; /* current size limit of rstack */
132: int rstackpos; /* position in rstack */
1.227 schwarze 133: int format; /* current file in mdoc or man format */
1.223 schwarze 134: char control; /* control character */
1.303 schwarze 135: char escape; /* escape character */
1.79 kristaps 136: };
137:
1.364 schwarze 138: /*
139: * A macro definition, condition, or ignored block.
140: */
1.67 kristaps 141: struct roffnode {
1.294 schwarze 142: enum roff_tok tok; /* type of node */
1.67 kristaps 143: struct roffnode *parent; /* up one in stack */
144: int line; /* parse line */
145: int col; /* parse col */
1.106 kristaps 146: char *name; /* node name, e.g. macro name */
1.364 schwarze 147: char *end; /* custom end macro of the block */
148: int endspan; /* scope to: 1=eol 2=next line -1=\} */
149: int rule; /* content is: 1=evaluated 0=skipped */
1.67 kristaps 150: };
151:
152: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 153: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 154: struct buf *buf, /* input buffer */ \
1.67 kristaps 155: int ln, /* parse line */ \
1.75 kristaps 156: int ppos, /* original pos in buffer */ \
157: int pos, /* current pos in buffer */ \
1.74 kristaps 158: int *offs /* reset offset of buffer data */
1.67 kristaps 159:
1.340 schwarze 160: typedef int (*roffproc)(ROFF_ARGS);
1.67 kristaps 161:
162: struct roffmac {
1.79 kristaps 163: roffproc proc; /* process new macro */
164: roffproc text; /* process as child text of macro */
165: roffproc sub; /* process as child of macro */
166: int flags;
167: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 168: };
169:
1.141 kristaps 170: struct predef {
171: const char *name; /* predefined input name */
172: const char *str; /* replacement symbol */
173: };
174:
175: #define PREDEF(__name, __str) \
176: { (__name), (__str) },
177:
1.266 schwarze 178: /* --- function prototypes ------------------------------------------------ */
179:
1.340 schwarze 180: static int roffnode_cleanscope(struct roff *);
181: static int roffnode_pop(struct roff *);
1.294 schwarze 182: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 183: const char *, int, int);
1.346 schwarze 184: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.340 schwarze 185: static int roff_als(ROFF_ARGS);
186: static int roff_block(ROFF_ARGS);
187: static int roff_block_text(ROFF_ARGS);
188: static int roff_block_sub(ROFF_ARGS);
1.364 schwarze 189: static int roff_break(ROFF_ARGS);
1.340 schwarze 190: static int roff_cblock(ROFF_ARGS);
191: static int roff_cc(ROFF_ARGS);
192: static int roff_ccond(struct roff *, int, int);
1.341 schwarze 193: static int roff_char(ROFF_ARGS);
1.340 schwarze 194: static int roff_cond(ROFF_ARGS);
1.375 schwarze 195: static int roff_cond_checkend(ROFF_ARGS);
1.340 schwarze 196: static int roff_cond_text(ROFF_ARGS);
197: static int roff_cond_sub(ROFF_ARGS);
198: static int roff_ds(ROFF_ARGS);
199: static int roff_ec(ROFF_ARGS);
200: static int roff_eo(ROFF_ARGS);
201: static int roff_eqndelim(struct roff *, struct buf *, int);
1.372 schwarze 202: static int roff_evalcond(struct roff *, int, char *, int *);
1.234 kristaps 203: static int roff_evalnum(struct roff *, int,
204: const char *, int *, int *, int);
205: static int roff_evalpar(struct roff *, int,
1.261 schwarze 206: const char *, int *, int *, int);
1.198 schwarze 207: static int roff_evalstrcond(const char *, int *);
1.355 schwarze 208: static int roff_expand(struct roff *, struct buf *,
209: int, int, char);
1.155 kristaps 210: static void roff_free1(struct roff *);
1.180 schwarze 211: static void roff_freereg(struct roffreg *);
1.167 kristaps 212: static void roff_freestr(struct roffkv *);
1.212 schwarze 213: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 214: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 215: static int roff_getop(const char *, int *, char *);
1.327 schwarze 216: static int roff_getregn(struct roff *,
217: const char *, size_t, char);
1.273 schwarze 218: static int roff_getregro(const struct roff *,
219: const char *name);
1.325 schwarze 220: static const char *roff_getstrn(struct roff *,
1.315 schwarze 221: const char *, size_t, int *);
1.271 schwarze 222: static int roff_hasregn(const struct roff *,
223: const char *, size_t);
1.340 schwarze 224: static int roff_insec(ROFF_ARGS);
225: static int roff_it(ROFF_ARGS);
226: static int roff_line_ignore(ROFF_ARGS);
1.265 schwarze 227: static void roff_man_alloc1(struct roff_man *);
228: static void roff_man_free1(struct roff_man *);
1.340 schwarze 229: static int roff_manyarg(ROFF_ARGS);
1.384 schwarze 230: static int roff_mc(ROFF_ARGS);
1.358 schwarze 231: static int roff_noarg(ROFF_ARGS);
1.340 schwarze 232: static int roff_nop(ROFF_ARGS);
233: static int roff_nr(ROFF_ARGS);
234: static int roff_onearg(ROFF_ARGS);
1.294 schwarze 235: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 236: int, int);
1.387 ! schwarze 237: static int roff_parse_comment(struct roff *, struct buf *,
! 238: int, int, char);
1.340 schwarze 239: static int roff_parsetext(struct roff *, struct buf *,
1.305 schwarze 240: int, int *);
1.340 schwarze 241: static int roff_renamed(ROFF_ARGS);
1.386 schwarze 242: static int roff_req_or_macro(ROFF_ARGS);
1.340 schwarze 243: static int roff_return(ROFF_ARGS);
244: static int roff_rm(ROFF_ARGS);
245: static int roff_rn(ROFF_ARGS);
246: static int roff_rr(ROFF_ARGS);
1.326 schwarze 247: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 248: size_t, int, char, int);
1.94 kristaps 249: static void roff_setstr(struct roff *,
1.106 kristaps 250: const char *, const char *, int);
1.207 schwarze 251: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 252: size_t, const char *, size_t, int);
1.340 schwarze 253: static int roff_shift(ROFF_ARGS);
254: static int roff_so(ROFF_ARGS);
255: static int roff_tr(ROFF_ARGS);
256: static int roff_Dd(ROFF_ARGS);
257: static int roff_TE(ROFF_ARGS);
258: static int roff_TS(ROFF_ARGS);
259: static int roff_EQ(ROFF_ARGS);
260: static int roff_EN(ROFF_ARGS);
261: static int roff_T_(ROFF_ARGS);
262: static int roff_unsupp(ROFF_ARGS);
263: static int roff_userdef(ROFF_ARGS);
1.67 kristaps 264:
1.266 schwarze 265: /* --- constant data ------------------------------------------------------ */
266:
1.261 schwarze 267: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
268: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
269:
1.294 schwarze 270: const char *__roff_name[MAN_MAX + 1] = {
1.358 schwarze 271: "br", "ce", "fi", "ft",
272: "ll", "mc", "nf",
273: "po", "rj", "sp",
1.312 schwarze 274: "ta", "ti", NULL,
1.294 schwarze 275: "ab", "ad", "af", "aln",
276: "als", "am", "am1", "ami",
277: "ami1", "as", "as1", "asciify",
278: "backtrace", "bd", "bleedat", "blm",
279: "box", "boxa", "bp", "BP",
280: "break", "breakchar", "brnl", "brp",
1.305 schwarze 281: "brpnl", "c2", "cc",
1.294 schwarze 282: "cf", "cflags", "ch", "char",
283: "chop", "class", "close", "CL",
284: "color", "composite", "continue", "cp",
285: "cropat", "cs", "cu", "da",
286: "dch", "Dd", "de", "de1",
287: "defcolor", "dei", "dei1", "device",
288: "devicem", "di", "do", "ds",
289: "ds1", "dwh", "dt", "ec",
290: "ecr", "ecs", "el", "em",
291: "EN", "eo", "EP", "EQ",
292: "errprint", "ev", "evc", "ex",
293: "fallback", "fam", "fc", "fchar",
294: "fcolor", "fdeferlig", "feature", "fkern",
295: "fl", "flig", "fp", "fps",
296: "fschar", "fspacewidth", "fspecial", "ftr",
297: "fzoom", "gcolor", "hc", "hcode",
298: "hidechar", "hla", "hlm", "hpf",
299: "hpfa", "hpfcode", "hw", "hy",
300: "hylang", "hylen", "hym", "hypp",
301: "hys", "ie", "if", "ig",
302: "index", "it", "itc", "IX",
303: "kern", "kernafter", "kernbefore", "kernpair",
304: "lc", "lc_ctype", "lds", "length",
305: "letadj", "lf", "lg", "lhang",
306: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 307: "ls", "lsm", "lt",
1.294 schwarze 308: "mediasize", "minss", "mk", "mso",
309: "na", "ne", "nh", "nhychar",
310: "nm", "nn", "nop", "nr",
311: "nrf", "nroff", "ns", "nx",
312: "open", "opena", "os", "output",
313: "padj", "papersize", "pc", "pev",
314: "pi", "PI", "pl", "pm",
1.312 schwarze 315: "pn", "pnr", "ps",
1.294 schwarze 316: "psbb", "pshape", "pso", "ptr",
317: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 318: "return", "rfschar", "rhang",
1.294 schwarze 319: "rm", "rn", "rnn", "rr",
320: "rs", "rt", "schar", "sentchar",
321: "shc", "shift", "sizes", "so",
322: "spacewidth", "special", "spreadwarn", "ss",
323: "sty", "substring", "sv", "sy",
1.300 schwarze 324: "T&", "tc", "TE",
1.301 schwarze 325: "TH", "tkf", "tl",
1.294 schwarze 326: "tm", "tm1", "tmc", "tr",
327: "track", "transchar", "trf", "trimat",
328: "trin", "trnt", "troff", "TS",
329: "uf", "ul", "unformat", "unwatch",
330: "unwatchn", "vpt", "vs", "warn",
331: "warnscale", "watch", "watchlength", "watchn",
332: "wh", "while", "write", "writec",
333: "writem", "xflag", ".", NULL,
1.306 schwarze 334: NULL, "text",
1.294 schwarze 335: "Dd", "Dt", "Os", "Sh",
336: "Ss", "Pp", "D1", "Dl",
337: "Bd", "Ed", "Bl", "El",
338: "It", "Ad", "An", "Ap",
339: "Ar", "Cd", "Cm", "Dv",
340: "Er", "Ev", "Ex", "Fa",
341: "Fd", "Fl", "Fn", "Ft",
342: "Ic", "In", "Li", "Nd",
343: "Nm", "Op", "Ot", "Pa",
344: "Rv", "St", "Va", "Vt",
345: "Xr", "%A", "%B", "%D",
346: "%I", "%J", "%N", "%O",
347: "%P", "%R", "%T", "%V",
348: "Ac", "Ao", "Aq", "At",
349: "Bc", "Bf", "Bo", "Bq",
350: "Bsx", "Bx", "Db", "Dc",
351: "Do", "Dq", "Ec", "Ef",
352: "Em", "Eo", "Fx", "Ms",
353: "No", "Ns", "Nx", "Ox",
354: "Pc", "Pf", "Po", "Pq",
355: "Qc", "Ql", "Qo", "Qq",
356: "Re", "Rs", "Sc", "So",
357: "Sq", "Sm", "Sx", "Sy",
358: "Tn", "Ux", "Xc", "Xo",
359: "Fo", "Fc", "Oo", "Oc",
360: "Bk", "Ek", "Bt", "Hf",
361: "Fr", "Ud", "Lb", "Lp",
362: "Lk", "Mt", "Brq", "Bro",
363: "Brc", "%C", "Es", "En",
1.299 schwarze 364: "Dx", "%Q", "%U", "Ta",
1.369 schwarze 365: "Tg", NULL,
1.294 schwarze 366: "TH", "SH", "SS", "TP",
1.332 schwarze 367: "TQ",
1.294 schwarze 368: "LP", "PP", "P", "IP",
369: "HP", "SM", "SB", "BI",
370: "IB", "BR", "RB", "R",
371: "B", "I", "IR", "RI",
372: "RE", "RS", "DT", "UC",
1.297 schwarze 373: "PD", "AT", "in",
1.333 schwarze 374: "SY", "YS", "OP",
375: "EX", "EE", "UR",
1.317 schwarze 376: "UE", "MT", "ME", NULL
1.294 schwarze 377: };
378: const char *const *roff_name = __roff_name;
379:
380: static struct roffmac roffs[TOKEN_NONE] = {
1.358 schwarze 381: { roff_noarg, NULL, NULL, 0 }, /* br */
1.305 schwarze 382: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.358 schwarze 383: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.297 schwarze 384: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 385: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.384 schwarze 386: { roff_mc, NULL, NULL, 0 }, /* mc */
1.358 schwarze 387: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.312 schwarze 388: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 389: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 390: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 391: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 392: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 393: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 394: { roff_unsupp, NULL, NULL, 0 }, /* ab */
395: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
396: { roff_line_ignore, NULL, NULL, 0 }, /* af */
397: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 398: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 399: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
400: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
401: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
402: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
403: { roff_ds, NULL, NULL, 0 }, /* as */
404: { roff_ds, NULL, NULL, 0 }, /* as1 */
405: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
406: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
407: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
408: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
409: { roff_unsupp, NULL, NULL, 0 }, /* blm */
410: { roff_unsupp, NULL, NULL, 0 }, /* box */
411: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
412: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
413: { roff_unsupp, NULL, NULL, 0 }, /* BP */
1.364 schwarze 414: { roff_break, NULL, NULL, 0 }, /* break */
1.295 schwarze 415: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
416: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.358 schwarze 417: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.295 schwarze 418: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
419: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
420: { roff_cc, NULL, NULL, 0 }, /* cc */
421: { roff_insec, NULL, NULL, 0 }, /* cf */
422: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
423: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.341 schwarze 424: { roff_char, NULL, NULL, 0 }, /* char */
1.295 schwarze 425: { roff_unsupp, NULL, NULL, 0 }, /* chop */
426: { roff_line_ignore, NULL, NULL, 0 }, /* class */
427: { roff_insec, NULL, NULL, 0 }, /* close */
428: { roff_unsupp, NULL, NULL, 0 }, /* CL */
429: { roff_line_ignore, NULL, NULL, 0 }, /* color */
430: { roff_unsupp, NULL, NULL, 0 }, /* composite */
431: { roff_unsupp, NULL, NULL, 0 }, /* continue */
432: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
433: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
434: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
435: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
436: { roff_unsupp, NULL, NULL, 0 }, /* da */
437: { roff_unsupp, NULL, NULL, 0 }, /* dch */
438: { roff_Dd, NULL, NULL, 0 }, /* Dd */
439: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
440: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
441: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
442: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
443: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
444: { roff_unsupp, NULL, NULL, 0 }, /* device */
445: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
446: { roff_unsupp, NULL, NULL, 0 }, /* di */
447: { roff_unsupp, NULL, NULL, 0 }, /* do */
448: { roff_ds, NULL, NULL, 0 }, /* ds */
449: { roff_ds, NULL, NULL, 0 }, /* ds1 */
450: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
451: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 452: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 453: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
454: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
455: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
456: { roff_unsupp, NULL, NULL, 0 }, /* em */
457: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 458: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 459: { roff_unsupp, NULL, NULL, 0 }, /* EP */
460: { roff_EQ, NULL, NULL, 0 }, /* EQ */
461: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
462: { roff_unsupp, NULL, NULL, 0 }, /* ev */
463: { roff_unsupp, NULL, NULL, 0 }, /* evc */
464: { roff_unsupp, NULL, NULL, 0 }, /* ex */
465: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
466: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
467: { roff_unsupp, NULL, NULL, 0 }, /* fc */
468: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
469: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
470: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
471: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
472: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
473: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
474: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
475: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
476: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
477: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
478: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
479: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
480: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
481: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
482: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
483: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
484: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
485: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
486: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
487: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
488: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
489: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
490: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
491: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
492: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
493: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
494: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
495: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
496: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
497: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
498: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
499: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
500: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
501: { roff_unsupp, NULL, NULL, 0 }, /* index */
502: { roff_it, NULL, NULL, 0 }, /* it */
503: { roff_unsupp, NULL, NULL, 0 }, /* itc */
504: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
505: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
506: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
507: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
508: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
509: { roff_unsupp, NULL, NULL, 0 }, /* lc */
510: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
511: { roff_unsupp, NULL, NULL, 0 }, /* lds */
512: { roff_unsupp, NULL, NULL, 0 }, /* length */
513: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
514: { roff_insec, NULL, NULL, 0 }, /* lf */
515: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
516: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
517: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
518: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
519: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
520: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
521: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
522: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
523: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
524: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
525: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
526: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
527: { roff_insec, NULL, NULL, 0 }, /* mso */
528: { roff_line_ignore, NULL, NULL, 0 }, /* na */
529: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
530: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
531: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
532: { roff_unsupp, NULL, NULL, 0 }, /* nm */
533: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 534: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 535: { roff_nr, NULL, NULL, 0 }, /* nr */
536: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
537: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
538: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
539: { roff_insec, NULL, NULL, 0 }, /* nx */
540: { roff_insec, NULL, NULL, 0 }, /* open */
541: { roff_insec, NULL, NULL, 0 }, /* opena */
542: { roff_line_ignore, NULL, NULL, 0 }, /* os */
543: { roff_unsupp, NULL, NULL, 0 }, /* output */
544: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
545: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
546: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
547: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
548: { roff_insec, NULL, NULL, 0 }, /* pi */
549: { roff_unsupp, NULL, NULL, 0 }, /* PI */
550: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
551: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
552: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
553: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
554: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
555: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
556: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
557: { roff_insec, NULL, NULL, 0 }, /* pso */
558: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
559: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
560: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
561: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
562: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 schwarze 563: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 564: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
565: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
566: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 567: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 568: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
569: { roff_rr, NULL, NULL, 0 }, /* rr */
570: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
571: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
572: { roff_unsupp, NULL, NULL, 0 }, /* schar */
573: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
574: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 schwarze 575: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 576: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
577: { roff_so, NULL, NULL, 0 }, /* so */
578: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
579: { roff_line_ignore, NULL, NULL, 0 }, /* special */
580: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
581: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
582: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
583: { roff_unsupp, NULL, NULL, 0 }, /* substring */
584: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
585: { roff_insec, NULL, NULL, 0 }, /* sy */
586: { roff_T_, NULL, NULL, 0 }, /* T& */
587: { roff_unsupp, NULL, NULL, 0 }, /* tc */
588: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 589: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 590: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
591: { roff_unsupp, NULL, NULL, 0 }, /* tl */
592: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
593: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
594: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
595: { roff_tr, NULL, NULL, 0 }, /* tr */
596: { roff_line_ignore, NULL, NULL, 0 }, /* track */
597: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
598: { roff_insec, NULL, NULL, 0 }, /* trf */
599: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
600: { roff_unsupp, NULL, NULL, 0 }, /* trin */
601: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
602: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
603: { roff_TS, NULL, NULL, 0 }, /* TS */
604: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
605: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
606: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
607: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
608: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
609: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
610: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
611: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
612: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
613: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
614: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
615: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
616: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.340 schwarze 617: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.295 schwarze 618: { roff_insec, NULL, NULL, 0 }, /* write */
619: { roff_insec, NULL, NULL, 0 }, /* writec */
620: { roff_insec, NULL, NULL, 0 }, /* writem */
621: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
622: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 623: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 624: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 625: };
626:
1.141 kristaps 627: /* Array of injected predefined strings. */
628: #define PREDEFS_MAX 38
629: static const struct predef predefs[PREDEFS_MAX] = {
630: #include "predefs.in"
631: };
632:
1.305 schwarze 633: static int roffce_lines; /* number of input lines to center */
634: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 635: static int roffit_lines; /* number of lines to delay */
636: static char *roffit_macro; /* nil-terminated macro line */
637:
1.207 schwarze 638:
1.266 schwarze 639: /* --- request table ------------------------------------------------------ */
640:
1.295 schwarze 641: struct ohash *
642: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 643: {
1.295 schwarze 644: struct ohash *htab;
645: struct roffreq *req;
646: enum roff_tok tok;
647: size_t sz;
648: unsigned int slot;
1.85 kristaps 649:
1.295 schwarze 650: htab = mandoc_malloc(sizeof(*htab));
651: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 652:
1.295 schwarze 653: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 654: if (roff_name[tok] == NULL)
655: continue;
1.295 schwarze 656: sz = strlen(roff_name[tok]);
657: req = mandoc_malloc(sizeof(*req) + sz + 1);
658: req->tok = tok;
659: memcpy(req->name, roff_name[tok], sz + 1);
660: slot = ohash_qlookup(htab, req->name);
661: ohash_insert(htab, slot, req);
1.85 kristaps 662: }
1.295 schwarze 663: return htab;
1.85 kristaps 664: }
665:
1.295 schwarze 666: void
667: roffhash_free(struct ohash *htab)
1.67 kristaps 668: {
1.295 schwarze 669: struct roffreq *req;
670: unsigned int slot;
1.67 kristaps 671:
1.295 schwarze 672: if (htab == NULL)
673: return;
674: for (req = ohash_first(htab, &slot); req != NULL;
675: req = ohash_next(htab, &slot))
676: free(req);
677: ohash_delete(htab);
678: free(htab);
679: }
680:
681: enum roff_tok
682: roffhash_find(struct ohash *htab, const char *name, size_t sz)
683: {
684: struct roffreq *req;
685: const char *end;
686:
687: if (sz) {
688: end = name + sz;
689: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
690: } else
691: req = ohash_find(htab, ohash_qlookup(htab, name));
692: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 693: }
694:
1.266 schwarze 695: /* --- stack of request blocks -------------------------------------------- */
696:
1.67 kristaps 697: /*
698: * Pop the current node off of the stack of roff instructions currently
1.364 schwarze 699: * pending. Return 1 if it is a loop or 0 otherwise.
1.67 kristaps 700: */
1.340 schwarze 701: static int
1.67 kristaps 702: roffnode_pop(struct roff *r)
703: {
704: struct roffnode *p;
1.340 schwarze 705: int inloop;
1.67 kristaps 706:
1.207 schwarze 707: p = r->last;
1.340 schwarze 708: inloop = p->tok == ROFF_while;
709: r->last = p->parent;
1.106 kristaps 710: free(p->name);
711: free(p->end);
1.67 kristaps 712: free(p);
1.340 schwarze 713: return inloop;
1.67 kristaps 714: }
715:
716: /*
717: * Push a roff node onto the instruction stack. This must later be
718: * removed with roffnode_pop().
719: */
1.98 schwarze 720: static void
1.294 schwarze 721: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 722: int line, int col)
1.67 kristaps 723: {
724: struct roffnode *p;
725:
1.98 schwarze 726: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 727: p->tok = tok;
1.106 kristaps 728: if (name)
729: p->name = mandoc_strdup(name);
1.67 kristaps 730: p->parent = r->last;
731: p->line = line;
732: p->col = col;
1.198 schwarze 733: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 734:
735: r->last = p;
736: }
737:
1.266 schwarze 738: /* --- roff parser state data management ---------------------------------- */
739:
1.67 kristaps 740: static void
741: roff_free1(struct roff *r)
742: {
1.167 kristaps 743: int i;
1.67 kristaps 744:
1.346 schwarze 745: tbl_free(r->first_tbl);
1.113 kristaps 746: r->first_tbl = r->last_tbl = r->tbl = NULL;
747:
1.347 schwarze 748: eqn_free(r->last_eqn);
1.319 schwarze 749: r->last_eqn = r->eqn = NULL;
1.125 kristaps 750:
1.339 schwarze 751: while (r->mstackpos >= 0)
752: roff_userret(r);
753:
1.67 kristaps 754: while (r->last)
755: roffnode_pop(r);
1.109 kristaps 756:
1.223 schwarze 757: free (r->rstack);
758: r->rstack = NULL;
759: r->rstacksz = 0;
760: r->rstackpos = -1;
761:
762: roff_freereg(r->regtab);
763: r->regtab = NULL;
764:
1.167 kristaps 765: roff_freestr(r->strtab);
1.306 schwarze 766: roff_freestr(r->rentab);
1.167 kristaps 767: roff_freestr(r->xmbtab);
1.306 schwarze 768: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 769:
770: if (r->xtab)
771: for (i = 0; i < 128; i++)
772: free(r->xtab[i].p);
773: free(r->xtab);
774: r->xtab = NULL;
1.67 kristaps 775: }
776:
777: void
778: roff_reset(struct roff *r)
779: {
780: roff_free1(r);
1.367 schwarze 781: r->options |= MPARSE_COMMENT;
1.227 schwarze 782: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 783: r->control = '\0';
784: r->escape = '\\';
1.307 schwarze 785: roffce_lines = 0;
786: roffce_node = NULL;
787: roffit_lines = 0;
788: roffit_macro = NULL;
1.67 kristaps 789: }
790:
791: void
792: roff_free(struct roff *r)
793: {
1.366 schwarze 794: int i;
1.339 schwarze 795:
1.67 kristaps 796: roff_free1(r);
1.339 schwarze 797: for (i = 0; i < r->mstacksz; i++)
798: free(r->mstack[i].argv);
799: free(r->mstack);
1.295 schwarze 800: roffhash_free(r->reqtab);
1.67 kristaps 801: free(r);
802: }
803:
804: struct roff *
1.351 schwarze 805: roff_alloc(int options)
1.67 kristaps 806: {
807: struct roff *r;
808:
1.98 schwarze 809: r = mandoc_calloc(1, sizeof(struct roff));
1.328 schwarze 810: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.367 schwarze 811: r->options = options | MPARSE_COMMENT;
1.227 schwarze 812: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 813: r->mstackpos = -1;
1.82 kristaps 814: r->rstackpos = -1;
1.303 schwarze 815: r->escape = '\\';
1.277 schwarze 816: return r;
1.265 schwarze 817: }
818:
1.266 schwarze 819: /* --- syntax tree state data management ---------------------------------- */
820:
1.265 schwarze 821: static void
822: roff_man_free1(struct roff_man *man)
823: {
1.356 schwarze 824: if (man->meta.first != NULL)
825: roff_node_delete(man, man->meta.first);
1.265 schwarze 826: free(man->meta.msec);
827: free(man->meta.vol);
828: free(man->meta.os);
829: free(man->meta.arch);
830: free(man->meta.title);
831: free(man->meta.name);
832: free(man->meta.date);
1.356 schwarze 833: free(man->meta.sodest);
1.265 schwarze 834: }
835:
1.357 schwarze 836: void
837: roff_state_reset(struct roff_man *man)
838: {
839: man->last = man->meta.first;
840: man->last_es = NULL;
841: man->flags = 0;
842: man->lastsec = man->lastnamed = SEC_NONE;
843: man->next = ROFF_NEXT_CHILD;
844: roff_setreg(man->roff, "nS", 0, '=');
845: }
846:
1.265 schwarze 847: static void
848: roff_man_alloc1(struct roff_man *man)
849: {
850: memset(&man->meta, 0, sizeof(man->meta));
1.356 schwarze 851: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
852: man->meta.first->type = ROFFT_ROOT;
853: man->meta.macroset = MACROSET_NONE;
1.357 schwarze 854: roff_state_reset(man);
1.265 schwarze 855: }
856:
857: void
858: roff_man_reset(struct roff_man *man)
859: {
860: roff_man_free1(man);
861: roff_man_alloc1(man);
862: }
863:
864: void
865: roff_man_free(struct roff_man *man)
866: {
867: roff_man_free1(man);
1.380 schwarze 868: free(man->os_r);
1.265 schwarze 869: free(man);
870: }
871:
872: struct roff_man *
1.351 schwarze 873: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.265 schwarze 874: {
875: struct roff_man *man;
876:
877: man = mandoc_calloc(1, sizeof(*man));
878: man->roff = roff;
1.316 schwarze 879: man->os_s = os_s;
1.265 schwarze 880: man->quick = quick;
881: roff_man_alloc1(man);
1.296 schwarze 882: roff->man = man;
1.277 schwarze 883: return man;
1.67 kristaps 884: }
885:
1.266 schwarze 886: /* --- syntax tree handling ----------------------------------------------- */
887:
888: struct roff_node *
889: roff_node_alloc(struct roff_man *man, int line, int pos,
890: enum roff_type type, int tok)
891: {
892: struct roff_node *n;
893:
894: n = mandoc_calloc(1, sizeof(*n));
895: n->line = line;
896: n->pos = pos;
897: n->tok = tok;
898: n->type = type;
899: n->sec = man->lastsec;
900:
901: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 902: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 903: else
1.285 schwarze 904: n->flags &= ~NODE_SYNPRETTY;
1.360 schwarze 905: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.359 schwarze 906: n->flags |= NODE_NOFILL;
907: else
908: n->flags &= ~NODE_NOFILL;
1.266 schwarze 909: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 910: n->flags |= NODE_LINE;
1.266 schwarze 911: man->flags &= ~MDOC_NEWLINE;
912:
1.277 schwarze 913: return n;
1.266 schwarze 914: }
915:
916: void
917: roff_node_append(struct roff_man *man, struct roff_node *n)
918: {
919:
920: switch (man->next) {
921: case ROFF_NEXT_SIBLING:
1.281 schwarze 922: if (man->last->next != NULL) {
923: n->next = man->last->next;
924: man->last->next->prev = n;
925: } else
926: man->last->parent->last = n;
1.266 schwarze 927: man->last->next = n;
928: n->prev = man->last;
929: n->parent = man->last->parent;
930: break;
931: case ROFF_NEXT_CHILD:
1.287 schwarze 932: if (man->last->child != NULL) {
933: n->next = man->last->child;
934: man->last->child->prev = n;
935: } else
936: man->last->last = n;
1.266 schwarze 937: man->last->child = n;
938: n->parent = man->last;
939: break;
940: default:
941: abort();
942: }
1.282 schwarze 943: man->last = n;
1.266 schwarze 944:
945: switch (n->type) {
946: case ROFFT_HEAD:
947: n->parent->head = n;
948: break;
949: case ROFFT_BODY:
1.282 schwarze 950: if (n->end != ENDBODY_NOT)
951: return;
1.266 schwarze 952: n->parent->body = n;
953: break;
954: case ROFFT_TAIL:
955: n->parent->tail = n;
956: break;
957: default:
1.282 schwarze 958: return;
1.266 schwarze 959: }
1.282 schwarze 960:
961: /*
962: * Copy over the normalised-data pointer of our parent. Not
963: * everybody has one, but copying a null pointer is fine.
964: */
965:
966: n->norm = n->parent->norm;
967: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 968: }
969:
1.267 schwarze 970: void
971: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
972: {
973: struct roff_node *n;
974:
975: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
976: n->string = roff_strdup(man->roff, word);
977: roff_node_append(man, n);
1.286 schwarze 978: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 979: man->next = ROFF_NEXT_SIBLING;
980: }
981:
982: void
983: roff_word_append(struct roff_man *man, const char *word)
984: {
985: struct roff_node *n;
986: char *addstr, *newstr;
987:
988: n = man->last;
989: addstr = roff_strdup(man->roff, word);
990: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
991: free(addstr);
992: free(n->string);
993: n->string = newstr;
994: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 995: }
996:
997: void
998: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
999: {
1000: struct roff_node *n;
1001:
1002: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
1003: roff_node_append(man, n);
1004: man->next = ROFF_NEXT_CHILD;
1005: }
1006:
1007: struct roff_node *
1008: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1009: {
1010: struct roff_node *n;
1011:
1012: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1013: roff_node_append(man, n);
1014: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1015: return n;
1.267 schwarze 1016: }
1017:
1.266 schwarze 1018: struct roff_node *
1019: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1020: {
1021: struct roff_node *n;
1022:
1023: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1024: roff_node_append(man, n);
1025: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1026: return n;
1.266 schwarze 1027: }
1028:
1029: struct roff_node *
1030: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1031: {
1032: struct roff_node *n;
1033:
1034: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1035: roff_node_append(man, n);
1036: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1037: return n;
1.267 schwarze 1038: }
1039:
1.321 schwarze 1040: static void
1.346 schwarze 1041: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1042: {
1043: struct roff_node *n;
1.346 schwarze 1044: struct tbl_span *span;
1.267 schwarze 1045:
1.356 schwarze 1046: if (man->meta.macroset == MACROSET_MAN)
1.302 schwarze 1047: man_breakscope(man, ROFF_TS);
1.321 schwarze 1048: while ((span = tbl_span(tbl)) != NULL) {
1.346 schwarze 1049: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1050: n->span = span;
1051: roff_node_append(man, n);
1052: n->flags |= NODE_VALID | NODE_ENDED;
1053: man->next = ROFF_NEXT_SIBLING;
1054: }
1.266 schwarze 1055: }
1056:
1057: void
1058: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1059: {
1060:
1061: /* Adjust siblings. */
1062:
1063: if (n->prev)
1064: n->prev->next = n->next;
1065: if (n->next)
1066: n->next->prev = n->prev;
1067:
1068: /* Adjust parent. */
1069:
1070: if (n->parent != NULL) {
1071: if (n->parent->child == n)
1072: n->parent->child = n->next;
1073: if (n->parent->last == n)
1074: n->parent->last = n->prev;
1075: }
1076:
1077: /* Adjust parse point. */
1078:
1079: if (man == NULL)
1080: return;
1081: if (man->last == n) {
1082: if (n->prev == NULL) {
1083: man->last = n->parent;
1084: man->next = ROFF_NEXT_CHILD;
1085: } else {
1086: man->last = n->prev;
1087: man->next = ROFF_NEXT_SIBLING;
1088: }
1089: }
1.356 schwarze 1090: if (man->meta.first == n)
1091: man->meta.first = NULL;
1.344 schwarze 1092: }
1093:
1094: void
1095: roff_node_relink(struct roff_man *man, struct roff_node *n)
1096: {
1097: roff_node_unlink(man, n);
1098: n->prev = n->next = NULL;
1099: roff_node_append(man, n);
1.266 schwarze 1100: }
1101:
1102: void
1103: roff_node_free(struct roff_node *n)
1104: {
1105:
1106: if (n->args != NULL)
1107: mdoc_argv_free(n->args);
1108: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1109: free(n->norm);
1.347 schwarze 1110: eqn_box_free(n->eqn);
1.266 schwarze 1111: free(n->string);
1.374 schwarze 1112: free(n->tag);
1.266 schwarze 1113: free(n);
1114: }
1115:
1116: void
1117: roff_node_delete(struct roff_man *man, struct roff_node *n)
1118: {
1119:
1120: while (n->child != NULL)
1121: roff_node_delete(man, n->child);
1122: roff_node_unlink(man, n);
1123: roff_node_free(n);
1.370 schwarze 1124: }
1125:
1126: int
1127: roff_node_transparent(struct roff_node *n)
1128: {
1129: if (n == NULL)
1130: return 0;
1131: if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
1132: return 1;
1.373 schwarze 1133: return roff_tok_transparent(n->tok);
1134: }
1135:
1136: int
1137: roff_tok_transparent(enum roff_tok tok)
1138: {
1139: switch (tok) {
1.370 schwarze 1140: case ROFF_ft:
1141: case ROFF_ll:
1142: case ROFF_mc:
1143: case ROFF_po:
1144: case ROFF_ta:
1145: case MDOC_Db:
1146: case MDOC_Es:
1147: case MDOC_Sm:
1148: case MDOC_Tg:
1149: case MAN_DT:
1150: case MAN_UC:
1151: case MAN_PD:
1152: case MAN_AT:
1153: return 1;
1154: default:
1155: return 0;
1156: }
1157: }
1158:
1159: struct roff_node *
1160: roff_node_child(struct roff_node *n)
1161: {
1162: for (n = n->child; roff_node_transparent(n); n = n->next)
1163: continue;
1164: return n;
1165: }
1166:
1167: struct roff_node *
1168: roff_node_prev(struct roff_node *n)
1169: {
1170: do {
1171: n = n->prev;
1172: } while (roff_node_transparent(n));
1173: return n;
1174: }
1175:
1176: struct roff_node *
1177: roff_node_next(struct roff_node *n)
1178: {
1179: do {
1180: n = n->next;
1181: } while (roff_node_transparent(n));
1182: return n;
1.269 schwarze 1183: }
1184:
1185: void
1186: deroff(char **dest, const struct roff_node *n)
1187: {
1188: char *cp;
1189: size_t sz;
1190:
1.371 schwarze 1191: if (n->string == NULL) {
1.269 schwarze 1192: for (n = n->child; n != NULL; n = n->next)
1193: deroff(dest, n);
1194: return;
1195: }
1196:
1.288 schwarze 1197: /* Skip leading whitespace. */
1.269 schwarze 1198:
1.288 schwarze 1199: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1200: if (cp[0] == '\\' && cp[1] != '\0' &&
1201: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1202: cp++;
1.288 schwarze 1203: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1204: break;
1205: }
1206:
1.289 schwarze 1207: /* Skip trailing backslash. */
1208:
1209: sz = strlen(cp);
1.290 schwarze 1210: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1211: sz--;
1212:
1.269 schwarze 1213: /* Skip trailing whitespace. */
1214:
1.289 schwarze 1215: for (; sz; sz--)
1.269 schwarze 1216: if ( ! isspace((unsigned char)cp[sz-1]))
1217: break;
1218:
1219: /* Skip empty strings. */
1220:
1221: if (sz == 0)
1222: return;
1223:
1224: if (*dest == NULL) {
1225: *dest = mandoc_strndup(cp, sz);
1226: return;
1227: }
1228:
1229: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1230: free(*dest);
1231: *dest = cp;
1.266 schwarze 1232: }
1233:
1234: /* --- main functions of the roff parser ---------------------------------- */
1235:
1.387 ! schwarze 1236: static int
! 1237: roff_parse_comment(struct roff *r, struct buf *buf, int ln, int pos,
! 1238: char newesc)
! 1239: {
! 1240: struct roff_node *n; /* used for header comments */
! 1241: const char *start; /* start of the string to process */
! 1242: const char *cp; /* for RCS id parsing */
! 1243: char *stesc; /* start of an escape sequence ('\\') */
! 1244: char *ep; /* end of comment string */
! 1245: int rcsid; /* kind of RCS id seen */
! 1246:
! 1247: for (start = stesc = buf->buf + pos;; stesc++) {
! 1248: /* The line ends without continuation or comment. */
! 1249: if (stesc[0] == '\0')
! 1250: return ROFF_CONT;
! 1251:
! 1252: /* Unescaped byte: skip it. */
! 1253: if (stesc[0] != newesc)
! 1254: continue;
! 1255:
! 1256: /* Backslash at end of line requests line continuation. */
! 1257: if (stesc[1] == '\0') {
! 1258: stesc[0] = '\0';
! 1259: return ROFF_IGN | ROFF_APPEND;
! 1260: }
! 1261:
! 1262: /* Found a comment: process it. */
! 1263: if (stesc[1] == '"' || stesc[1] == '#')
! 1264: break;
! 1265:
! 1266: /* Escaped escape character: skip them both. */
! 1267: if (stesc[1] == newesc)
! 1268: stesc++;
! 1269: }
! 1270:
! 1271: /* Look for an RCS id in the comment. */
! 1272:
! 1273: rcsid = 0;
! 1274: if ((cp = strstr(stesc + 2, "$" "OpenBSD")) != NULL) {
! 1275: rcsid = 1 << MANDOC_OS_OPENBSD;
! 1276: cp += 8;
! 1277: } else if ((cp = strstr(stesc + 2, "$" "NetBSD")) != NULL) {
! 1278: rcsid = 1 << MANDOC_OS_NETBSD;
! 1279: cp += 7;
! 1280: }
! 1281: if (cp != NULL && isalnum((unsigned char)*cp) == 0 &&
! 1282: strchr(cp, '$') != NULL) {
! 1283: if (r->man->meta.rcsids & rcsid)
! 1284: mandoc_msg(MANDOCERR_RCS_REP, ln,
! 1285: (int)(stesc - buf->buf) + 2, "%s", stesc + 1);
! 1286: r->man->meta.rcsids |= rcsid;
! 1287: }
! 1288:
! 1289: /* Warn about trailing whitespace at the end of the comment. */
! 1290:
! 1291: ep = strchr(stesc + 2, '\0') - 1;
! 1292: if (*ep == '\n')
! 1293: *ep-- = '\0';
! 1294: if (*ep == ' ' || *ep == '\t')
! 1295: mandoc_msg(MANDOCERR_SPACE_EOL,
! 1296: ln, (int)(ep - buf->buf), NULL);
! 1297:
! 1298: /* Save comments preceding the title macro in the syntax tree. */
! 1299:
! 1300: if (r->options & MPARSE_COMMENT) {
! 1301: while (*ep == ' ' || *ep == '\t')
! 1302: ep--;
! 1303: ep[1] = '\0';
! 1304: n = roff_node_alloc(r->man, ln, stesc + 1 - buf->buf,
! 1305: ROFFT_COMMENT, TOKEN_NONE);
! 1306: n->string = mandoc_strdup(stesc + 2);
! 1307: roff_node_append(r->man, n);
! 1308: n->flags |= NODE_VALID | NODE_ENDED;
! 1309: r->man->next = ROFF_NEXT_SIBLING;
! 1310: }
! 1311:
! 1312: /* The comment requests line continuation. */
! 1313:
! 1314: if (stesc[1] == '#') {
! 1315: *stesc = '\0';
! 1316: return ROFF_IGN | ROFF_APPEND;
! 1317: }
! 1318:
! 1319: /* Discard the comment including preceding whitespace. */
! 1320:
! 1321: while (stesc > start && stesc[-1] == ' ' &&
! 1322: (stesc == start + 1 || stesc[-2] != '\\'))
! 1323: stesc--;
! 1324: *stesc = '\0';
! 1325: return ROFF_CONT;
! 1326: }
! 1327:
1.94 kristaps 1328: /*
1.355 schwarze 1329: * In the current line, expand escape sequences that produce parsable
1330: * input text. Also check the syntax of the remaining escape sequences,
1331: * which typically produce output glyphs or change formatter state.
1.154 kristaps 1332: */
1.340 schwarze 1333: static int
1.355 schwarze 1334: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char newesc)
1.94 kristaps 1335: {
1.339 schwarze 1336: struct mctx *ctx; /* current macro call context */
1.208 schwarze 1337: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1338: const char *start; /* start of the string to process */
1.209 schwarze 1339: char *stesc; /* start of an escape sequence ('\\') */
1.352 schwarze 1340: const char *esct; /* type of esccape sequence */
1.108 schwarze 1341: const char *stnam; /* start of the name, after "[(*" */
1342: const char *cp; /* end of the name, e.g. before ']' */
1343: const char *res; /* the string to be substituted */
1.238 schwarze 1344: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1345: size_t maxl; /* expected length of the escape name */
1346: size_t naml; /* actual length of the escape name */
1.339 schwarze 1347: size_t asz; /* length of the replacement */
1348: size_t rsz; /* length of the rest of the string */
1.237 schwarze 1349: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1350: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1351: int npos; /* position in numeric expression */
1.218 schwarze 1352: int arg_complete; /* argument not interrupted by eol */
1.339 schwarze 1353: int quote_args; /* true for \\$@, false for \\$* */
1.315 schwarze 1354: int deftype; /* type of definition to paste */
1.352 schwarze 1355: enum mandocerr err; /* for escape sequence problems */
1.327 schwarze 1356: char sign; /* increment number register */
1.206 schwarze 1357: char term; /* character terminating the escape */
1.94 kristaps 1358:
1.303 schwarze 1359: start = buf->buf + pos;
1.387 ! schwarze 1360: stesc = strchr(start, '\0') - 1;
! 1361: if (stesc >= start && *stesc == '\n')
1.303 schwarze 1362: *stesc-- = '\0';
1363:
1.170 schwarze 1364: expand_count = 0;
1.303 schwarze 1365: while (stesc >= start) {
1.355 schwarze 1366: if (*stesc != newesc) {
1.170 schwarze 1367:
1.355 schwarze 1368: /*
1369: * If we have a non-standard escape character,
1370: * escape literal backslashes because all
1371: * processing in subsequent functions uses
1372: * the standard escaping rules.
1373: */
1.205 schwarze 1374:
1.355 schwarze 1375: if (newesc != ASCII_ESC && *stesc == '\\') {
1.303 schwarze 1376: *stesc = '\0';
1377: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1378: buf->buf, stesc + 1) + 1;
1379: start = nbuf + pos;
1380: stesc = nbuf + (stesc - buf->buf);
1381: free(buf->buf);
1382: buf->buf = nbuf;
1383: }
1.355 schwarze 1384:
1385: /* Search backwards for the next escape. */
1386:
1.303 schwarze 1387: stesc--;
1.205 schwarze 1388: continue;
1.303 schwarze 1389: }
1.205 schwarze 1390:
1391: /* If it is escaped, skip it. */
1392:
1393: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1394: if (*cp != r->escape)
1.205 schwarze 1395: break;
1396:
1.238 schwarze 1397: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1398: while (stesc > cp)
1399: *stesc-- = '\\';
1.205 schwarze 1400: continue;
1.387 ! schwarze 1401: } else if (stesc[1] == '\0') {
! 1402: *stesc-- = '\0';
! 1403: continue;
! 1404: } else
1.303 schwarze 1405: *stesc = '\\';
1.108 schwarze 1406:
1.206 schwarze 1407: /* Decide whether to expand or to check only. */
1.108 schwarze 1408:
1.206 schwarze 1409: term = '\0';
1.205 schwarze 1410: cp = stesc + 1;
1.381 schwarze 1411: while (*cp == 'E')
1.352 schwarze 1412: cp++;
1413: esct = cp;
1414: switch (*esct) {
1.207 schwarze 1415: case '*':
1.339 schwarze 1416: case '$':
1.181 schwarze 1417: res = NULL;
1418: break;
1.207 schwarze 1419: case 'B':
1420: case 'w':
1.206 schwarze 1421: term = cp[1];
1422: /* FALLTHROUGH */
1.207 schwarze 1423: case 'n':
1.327 schwarze 1424: sign = cp[1];
1425: if (sign == '+' || sign == '-')
1426: cp++;
1.181 schwarze 1427: res = ubuf;
1428: break;
1429: default:
1.352 schwarze 1430: err = MANDOCERR_OK;
1431: switch(mandoc_escape(&cp, &stnam, &inaml)) {
1432: case ESCAPE_SPECIAL:
1433: if (mchars_spec2cp(stnam, inaml) >= 0)
1434: break;
1435: /* FALLTHROUGH */
1436: case ESCAPE_ERROR:
1437: err = MANDOCERR_ESC_BAD;
1438: break;
1439: case ESCAPE_UNDEF:
1440: err = MANDOCERR_ESC_UNDEF;
1441: break;
1442: case ESCAPE_UNSUPP:
1443: err = MANDOCERR_ESC_UNSUPP;
1444: break;
1445: default:
1446: break;
1447: }
1448: if (err != MANDOCERR_OK)
1449: mandoc_msg(err, ln, (int)(stesc - buf->buf),
1.219 schwarze 1450: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1451: stesc--;
1.205 schwarze 1452: continue;
1.152 kristaps 1453: }
1454:
1.205 schwarze 1455: if (EXPAND_LIMIT < ++expand_count) {
1.350 schwarze 1456: mandoc_msg(MANDOCERR_ROFFLOOP,
1.238 schwarze 1457: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1458: return ROFF_IGN;
1.205 schwarze 1459: }
1.108 schwarze 1460:
1461: /*
1462: * The third character decides the length
1.181 schwarze 1463: * of the name of the string or register.
1.108 schwarze 1464: * Save a pointer to the name.
1465: */
1466:
1.238 schwarze 1467: if (term == '\0') {
1.206 schwarze 1468: switch (*++cp) {
1.207 schwarze 1469: case '\0':
1.206 schwarze 1470: maxl = 0;
1471: break;
1.207 schwarze 1472: case '(':
1.206 schwarze 1473: cp++;
1474: maxl = 2;
1475: break;
1.207 schwarze 1476: case '[':
1.206 schwarze 1477: cp++;
1478: term = ']';
1479: maxl = 0;
1480: break;
1481: default:
1482: maxl = 1;
1483: break;
1484: }
1485: } else {
1486: cp += 2;
1.94 kristaps 1487: maxl = 0;
1488: }
1.108 schwarze 1489: stnam = cp;
1.94 kristaps 1490:
1.108 schwarze 1491: /* Advance to the end of the name. */
1.94 kristaps 1492:
1.253 schwarze 1493: naml = 0;
1.218 schwarze 1494: arg_complete = 1;
1.253 schwarze 1495: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1496: if (*cp == '\0') {
1.350 schwarze 1497: mandoc_msg(MANDOCERR_ESC_BAD, ln,
1498: (int)(stesc - buf->buf), "%s", stesc);
1.218 schwarze 1499: arg_complete = 0;
1.206 schwarze 1500: break;
1.153 kristaps 1501: }
1.238 schwarze 1502: if (maxl == 0 && *cp == term) {
1.206 schwarze 1503: cp++;
1.253 schwarze 1504: break;
1505: }
1.352 schwarze 1506: if (*cp++ != '\\' || *esct != 'w') {
1.253 schwarze 1507: naml++;
1508: continue;
1509: }
1510: switch (mandoc_escape(&cp, NULL, NULL)) {
1511: case ESCAPE_SPECIAL:
1512: case ESCAPE_UNICODE:
1513: case ESCAPE_NUMBERED:
1.352 schwarze 1514: case ESCAPE_UNDEF:
1.253 schwarze 1515: case ESCAPE_OVERSTRIKE:
1516: naml++;
1517: break;
1518: default:
1.94 kristaps 1519: break;
1.206 schwarze 1520: }
1.94 kristaps 1521: }
1522:
1.108 schwarze 1523: /*
1524: * Retrieve the replacement string; if it is
1525: * undefined, resume searching for escapes.
1526: */
1527:
1.352 schwarze 1528: switch (*esct) {
1.207 schwarze 1529: case '*':
1.315 schwarze 1530: if (arg_complete) {
1531: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1532: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1533:
1534: /*
1535: * If not overriden, let \*(.T
1536: * through to the formatters.
1537: */
1538:
1539: if (res == NULL && naml == 2 &&
1540: stnam[0] == '.' && stnam[1] == 'T') {
1541: roff_setstrn(&r->strtab,
1542: ".T", 2, NULL, 0, 0);
1543: stesc--;
1544: continue;
1545: }
1.315 schwarze 1546: }
1.206 schwarze 1547: break;
1.339 schwarze 1548: case '$':
1549: if (r->mstackpos < 0) {
1.350 schwarze 1550: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
1551: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1552: break;
1553: }
1554: ctx = r->mstack + r->mstackpos;
1.352 schwarze 1555: npos = esct[1] - '1';
1.339 schwarze 1556: if (npos >= 0 && npos <= 8) {
1557: res = npos < ctx->argc ?
1558: ctx->argv[npos] : "";
1559: break;
1560: }
1.352 schwarze 1561: if (esct[1] == '*')
1.339 schwarze 1562: quote_args = 0;
1.352 schwarze 1563: else if (esct[1] == '@')
1.339 schwarze 1564: quote_args = 1;
1565: else {
1.350 schwarze 1566: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
1567: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1568: break;
1569: }
1570: asz = 0;
1571: for (npos = 0; npos < ctx->argc; npos++) {
1572: if (npos)
1573: asz++; /* blank */
1574: if (quote_args)
1575: asz += 2; /* quotes */
1576: asz += strlen(ctx->argv[npos]);
1577: }
1578: if (asz != 3) {
1579: rsz = buf->sz - (stesc - buf->buf) - 3;
1580: if (asz < 3)
1581: memmove(stesc + asz, stesc + 3, rsz);
1582: buf->sz += asz - 3;
1583: nbuf = mandoc_realloc(buf->buf, buf->sz);
1584: start = nbuf + pos;
1585: stesc = nbuf + (stesc - buf->buf);
1586: buf->buf = nbuf;
1587: if (asz > 3)
1588: memmove(stesc + asz, stesc + 3, rsz);
1589: }
1590: for (npos = 0; npos < ctx->argc; npos++) {
1591: if (npos)
1592: *stesc++ = ' ';
1593: if (quote_args)
1594: *stesc++ = '"';
1595: cp = ctx->argv[npos];
1596: while (*cp != '\0')
1597: *stesc++ = *cp++;
1598: if (quote_args)
1599: *stesc++ = '"';
1600: }
1601: continue;
1.207 schwarze 1602: case 'B':
1.206 schwarze 1603: npos = 0;
1.218 schwarze 1604: ubuf[0] = arg_complete &&
1.261 schwarze 1605: roff_evalnum(r, ln, stnam, &npos,
1606: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1607: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1608: ubuf[1] = '\0';
1609: break;
1.207 schwarze 1610: case 'n':
1.218 schwarze 1611: if (arg_complete)
1612: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1613: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1614: else
1615: ubuf[0] = '\0';
1.206 schwarze 1616: break;
1.207 schwarze 1617: case 'w':
1.218 schwarze 1618: /* use even incomplete args */
1.208 schwarze 1619: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1620: 24 * (int)naml);
1621: break;
1622: }
1.94 kristaps 1623:
1.238 schwarze 1624: if (res == NULL) {
1.352 schwarze 1625: if (*esct == '*')
1.350 schwarze 1626: mandoc_msg(MANDOCERR_STR_UNDEF,
1627: ln, (int)(stesc - buf->buf),
1.339 schwarze 1628: "%.*s", (int)naml, stnam);
1.142 kristaps 1629: res = "";
1.246 schwarze 1630: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.350 schwarze 1631: mandoc_msg(MANDOCERR_ROFFLOOP,
1.246 schwarze 1632: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1633: return ROFF_IGN;
1.94 kristaps 1634: }
1635:
1.108 schwarze 1636: /* Replace the escape sequence by the string. */
1637:
1.209 schwarze 1638: *stesc = '\0';
1.238 schwarze 1639: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1640: buf->buf, res, cp) + 1;
1.94 kristaps 1641:
1.205 schwarze 1642: /* Prepare for the next replacement. */
1.94 kristaps 1643:
1.205 schwarze 1644: start = nbuf + pos;
1.238 schwarze 1645: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1646: free(buf->buf);
1647: buf->buf = nbuf;
1.154 kristaps 1648: }
1.277 schwarze 1649: return ROFF_CONT;
1.154 kristaps 1650: }
1.353 schwarze 1651:
1652: /*
1653: * Parse a quoted or unquoted roff-style request or macro argument.
1654: * Return a pointer to the parsed argument, which is either the original
1655: * pointer or advanced by one byte in case the argument is quoted.
1656: * NUL-terminate the argument in place.
1657: * Collapse pairs of quotes inside quoted arguments.
1658: * Advance the argument pointer to the next argument,
1659: * or to the NUL byte terminating the argument line.
1660: */
1661: char *
1.355 schwarze 1662: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.353 schwarze 1663: {
1.355 schwarze 1664: struct buf buf;
1.366 schwarze 1665: char *cp, *start;
1.355 schwarze 1666: int newesc, pairs, quoted, white;
1.353 schwarze 1667:
1668: /* Quoting can only start with a new word. */
1669: start = *cpp;
1670: quoted = 0;
1671: if ('"' == *start) {
1672: quoted = 1;
1673: start++;
1674: }
1675:
1.355 schwarze 1676: newesc = pairs = white = 0;
1.353 schwarze 1677: for (cp = start; '\0' != *cp; cp++) {
1678:
1679: /*
1680: * Move the following text left
1681: * after quoted quotes and after "\\" and "\t".
1682: */
1683: if (pairs)
1684: cp[-pairs] = cp[0];
1685:
1686: if ('\\' == cp[0]) {
1687: /*
1688: * In copy mode, translate double to single
1689: * backslashes and backslash-t to literal tabs.
1690: */
1691: switch (cp[1]) {
1692: case 'a':
1693: case 't':
1.354 schwarze 1694: cp[-pairs] = '\t';
1.355 schwarze 1695: pairs++;
1696: cp++;
1697: break;
1.353 schwarze 1698: case '\\':
1.355 schwarze 1699: newesc = 1;
1700: cp[-pairs] = ASCII_ESC;
1.353 schwarze 1701: pairs++;
1702: cp++;
1703: break;
1704: case ' ':
1705: /* Skip escaped blanks. */
1706: if (0 == quoted)
1707: cp++;
1708: break;
1709: default:
1710: break;
1711: }
1712: } else if (0 == quoted) {
1713: if (' ' == cp[0]) {
1714: /* Unescaped blanks end unquoted args. */
1715: white = 1;
1716: break;
1717: }
1718: } else if ('"' == cp[0]) {
1719: if ('"' == cp[1]) {
1720: /* Quoted quotes collapse. */
1721: pairs++;
1722: cp++;
1723: } else {
1724: /* Unquoted quotes end quoted args. */
1725: quoted = 2;
1726: break;
1727: }
1728: }
1729: }
1730:
1731: /* Quoted argument without a closing quote. */
1732: if (1 == quoted)
1733: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1734:
1735: /* NUL-terminate this argument and move to the next one. */
1736: if (pairs)
1737: cp[-pairs] = '\0';
1738: if ('\0' != *cp) {
1739: *cp++ = '\0';
1740: while (' ' == *cp)
1741: cp++;
1742: }
1743: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1744: *cpp = cp;
1745:
1746: if ('\0' == *cp && (white || ' ' == cp[-1]))
1747: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1748:
1.355 schwarze 1749: start = mandoc_strdup(start);
1750: if (newesc == 0)
1751: return start;
1752:
1753: buf.buf = start;
1754: buf.sz = strlen(start) + 1;
1755: buf.next = NULL;
1756: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1757: free(buf.buf);
1758: buf.buf = mandoc_strdup("");
1759: }
1760: return buf.buf;
1.353 schwarze 1761: }
1762:
1.154 kristaps 1763:
1764: /*
1.275 schwarze 1765: * Process text streams.
1.154 kristaps 1766: */
1.340 schwarze 1767: static int
1.305 schwarze 1768: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1769: {
1770: size_t sz;
1771: const char *start;
1.178 schwarze 1772: char *p;
1773: int isz;
1.154 kristaps 1774: enum mandoc_esc esc;
1775:
1.275 schwarze 1776: /* Spring the input line trap. */
1777:
1778: if (roffit_lines == 1) {
1779: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1780: free(buf->buf);
1781: buf->buf = p;
1782: buf->sz = isz + 1;
1783: *offs = 0;
1784: free(roffit_macro);
1785: roffit_lines = 0;
1.277 schwarze 1786: return ROFF_REPARSE;
1.275 schwarze 1787: } else if (roffit_lines > 1)
1788: --roffit_lines;
1789:
1.305 schwarze 1790: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1791: if (roffce_lines < 1) {
1792: r->man->last = roffce_node;
1793: r->man->next = ROFF_NEXT_SIBLING;
1794: roffce_lines = 0;
1795: roffce_node = NULL;
1796: } else
1797: roffce_lines--;
1798: }
1799:
1.275 schwarze 1800: /* Convert all breakable hyphens into ASCII_HYPH. */
1801:
1.238 schwarze 1802: start = p = buf->buf + pos;
1.154 kristaps 1803:
1.238 schwarze 1804: while (*p != '\0') {
1.154 kristaps 1805: sz = strcspn(p, "-\\");
1806: p += sz;
1807:
1.238 schwarze 1808: if (*p == '\0')
1.159 kristaps 1809: break;
1810:
1.238 schwarze 1811: if (*p == '\\') {
1.154 kristaps 1812: /* Skip over escapes. */
1813: p++;
1.189 schwarze 1814: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1815: if (esc == ESCAPE_ERROR)
1.154 kristaps 1816: break;
1.264 schwarze 1817: while (*p == '-')
1818: p++;
1.155 kristaps 1819: continue;
1.159 kristaps 1820: } else if (p == start) {
1.158 kristaps 1821: p++;
1.155 kristaps 1822: continue;
1.158 kristaps 1823: }
1.155 kristaps 1824:
1.171 schwarze 1825: if (isalpha((unsigned char)p[-1]) &&
1826: isalpha((unsigned char)p[1]))
1.155 kristaps 1827: *p = ASCII_HYPH;
1828: p++;
1.94 kristaps 1829: }
1.277 schwarze 1830: return ROFF_CONT;
1.94 kristaps 1831: }
1832:
1.340 schwarze 1833: int
1.377 schwarze 1834: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs, size_t len)
1.67 kristaps 1835: {
1.294 schwarze 1836: enum roff_tok t;
1.340 schwarze 1837: int e;
1.238 schwarze 1838: int pos; /* parse point */
1.243 schwarze 1839: int spos; /* saved parse point for messages */
1.238 schwarze 1840: int ppos; /* original offset in buf->buf */
1841: int ctl; /* macro line (boolean) */
1842:
1843: ppos = pos = *offs;
1.377 schwarze 1844:
1845: if (len > 80 && r->tbl == NULL && r->eqn == NULL &&
1846: (r->man->flags & ROFF_NOFILL) == 0 &&
1847: strchr(" .\\", buf->buf[pos]) == NULL &&
1848: buf->buf[pos] != r->control &&
1849: strcspn(buf->buf, " ") < 80)
1850: mandoc_msg(MANDOCERR_TEXT_LONG, ln, (int)len - 1,
1851: "%.20s...", buf->buf + pos);
1.79 kristaps 1852:
1.230 schwarze 1853: /* Handle in-line equation delimiters. */
1854:
1.236 schwarze 1855: if (r->tbl == NULL &&
1856: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1857: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1858: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1859: if (e == ROFF_REPARSE)
1.277 schwarze 1860: return e;
1.230 schwarze 1861: assert(e == ROFF_CONT);
1862: }
1863:
1.387 ! schwarze 1864: /* Handle comments and escape sequences. */
! 1865:
! 1866: e = roff_parse_comment(r, buf, ln, pos, r->escape);
! 1867: if ((e & ROFF_MASK) == ROFF_IGN)
! 1868: return e;
! 1869: assert(e == ROFF_CONT);
1.94 kristaps 1870:
1.355 schwarze 1871: e = roff_expand(r, buf, ln, pos, r->escape);
1.340 schwarze 1872: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1873: return e;
1.238 schwarze 1874: assert(e == ROFF_CONT);
1.94 kristaps 1875:
1.238 schwarze 1876: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1877:
1.94 kristaps 1878: /*
1.79 kristaps 1879: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1880: * text through the macro's filter.
1881: * Equations process all content themselves.
1882: * Tables process almost all content themselves, but we want
1883: * to warn about macros before passing it there.
1.79 kristaps 1884: */
1.74 kristaps 1885:
1.252 schwarze 1886: if (r->last != NULL && ! ctl) {
1.78 kristaps 1887: t = r->last->tok;
1.238 schwarze 1888: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1889: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1890: return e;
1.340 schwarze 1891: e &= ~ROFF_MASK;
1892: } else
1893: e = ROFF_IGN;
1.319 schwarze 1894: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1895: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1896: return e;
1.319 schwarze 1897: }
1.321 schwarze 1898: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1899: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1900: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1901: return e;
1.321 schwarze 1902: }
1.367 schwarze 1903: if ( ! ctl) {
1904: r->options &= ~MPARSE_COMMENT;
1.340 schwarze 1905: return roff_parsetext(r, buf, pos, offs) | e;
1.367 schwarze 1906: }
1.228 schwarze 1907:
1908: /* Skip empty request lines. */
1909:
1.238 schwarze 1910: if (buf->buf[pos] == '"') {
1.350 schwarze 1911: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1912: return ROFF_IGN;
1.238 schwarze 1913: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1914: return ROFF_IGN;
1.67 kristaps 1915:
1.79 kristaps 1916: /*
1917: * If a scope is open, go to the child handler for that macro,
1918: * as it may want to preprocess before doing anything with it.
1919: */
1.78 kristaps 1920:
1.79 kristaps 1921: if (r->last) {
1922: t = r->last->tok;
1.277 schwarze 1923: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1924: }
1.78 kristaps 1925:
1.367 schwarze 1926: r->options &= ~MPARSE_COMMENT;
1.243 schwarze 1927: spos = pos;
1928: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.386 schwarze 1929: return roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1930: }
1931:
1932: /*
1933: * Handle a new request or macro.
1934: * May be called outside any scope or from inside a conditional scope.
1935: */
1936: static int
1937: roff_req_or_macro(ROFF_ARGS) {
1.243 schwarze 1938:
1.386 schwarze 1939: /* For now, tables ignore most macros and some request. */
1.243 schwarze 1940:
1.386 schwarze 1941: if (r->tbl != NULL && (tok == TOKEN_NONE || tok == ROFF_TS ||
1942: tok == ROFF_br || tok == ROFF_ce || tok == ROFF_rj ||
1943: tok == ROFF_sp)) {
1.350 schwarze 1944: mandoc_msg(MANDOCERR_TBLMACRO,
1.386 schwarze 1945: ln, ppos, "%s", buf->buf + ppos);
1946: if (tok != TOKEN_NONE)
1.277 schwarze 1947: return ROFF_IGN;
1.257 schwarze 1948: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1949: pos++;
1.291 schwarze 1950: while (buf->buf[pos] == ' ')
1.257 schwarze 1951: pos++;
1.321 schwarze 1952: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1953: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1954: return ROFF_IGN;
1.243 schwarze 1955: }
1956:
1.305 schwarze 1957: /* For now, let high level macros abort .ce mode. */
1958:
1.386 schwarze 1959: if (roffce_node != NULL &&
1960: (tok == TOKEN_NONE || tok == ROFF_Dd || tok == ROFF_EQ ||
1961: tok == ROFF_TH || tok == ROFF_TS)) {
1.305 schwarze 1962: r->man->last = roffce_node;
1963: r->man->next = ROFF_NEXT_SIBLING;
1964: roffce_lines = 0;
1965: roffce_node = NULL;
1966: }
1967:
1.79 kristaps 1968: /*
1.243 schwarze 1969: * This is neither a roff request nor a user-defined macro.
1970: * Let the standard macro set parsers handle it.
1.79 kristaps 1971: */
1.67 kristaps 1972:
1.386 schwarze 1973: if (tok == TOKEN_NONE)
1.277 schwarze 1974: return ROFF_CONT;
1.243 schwarze 1975:
1.386 schwarze 1976: /* Execute a roff request or a user-defined macro. */
1.67 kristaps 1977:
1.386 schwarze 1978: return (*roffs[tok].proc)(r, tok, buf, ln, ppos, pos, offs);
1.74 kristaps 1979: }
1980:
1.339 schwarze 1981: /*
1982: * Internal interface function to tell the roff parser that execution
1983: * of the current macro ended. This is required because macro
1984: * definitions usually do not end with a .return request.
1985: */
1986: void
1987: roff_userret(struct roff *r)
1988: {
1989: struct mctx *ctx;
1990: int i;
1991:
1992: assert(r->mstackpos >= 0);
1993: ctx = r->mstack + r->mstackpos;
1994: for (i = 0; i < ctx->argc; i++)
1995: free(ctx->argv[i]);
1996: ctx->argc = 0;
1997: r->mstackpos--;
1998: }
1999:
1.117 kristaps 2000: void
1.74 kristaps 2001: roff_endparse(struct roff *r)
2002: {
1.321 schwarze 2003: if (r->last != NULL)
1.350 schwarze 2004: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
2005: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 2006:
1.321 schwarze 2007: if (r->eqn != NULL) {
1.350 schwarze 2008: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 2009: r->eqn->node->line, r->eqn->node->pos, "EQ");
2010: eqn_parse(r->eqn);
2011: r->eqn = NULL;
1.125 kristaps 2012: }
2013:
1.321 schwarze 2014: if (r->tbl != NULL) {
1.346 schwarze 2015: tbl_end(r->tbl, 1);
1.321 schwarze 2016: r->tbl = NULL;
1.117 kristaps 2017: }
1.67 kristaps 2018: }
2019:
2020: /*
1.386 schwarze 2021: * Parse the request or macro name at buf[*pos].
2022: * Return ROFF_RENAMED, ROFF_USERDEF, or a ROFF_* token value.
2023: * For empty, undefined, mdoc(7), and man(7) macros, return TOKEN_NONE.
2024: * As a side effect, set r->current_string to the definition or to NULL.
1.67 kristaps 2025: */
1.294 schwarze 2026: static enum roff_tok
1.214 schwarze 2027: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 2028: {
1.214 schwarze 2029: char *cp;
1.106 kristaps 2030: const char *mac;
2031: size_t maclen;
1.315 schwarze 2032: int deftype;
1.294 schwarze 2033: enum roff_tok t;
1.67 kristaps 2034:
1.214 schwarze 2035: cp = buf + *pos;
2036:
2037: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 2038: return TOKEN_NONE;
1.67 kristaps 2039:
1.214 schwarze 2040: mac = cp;
2041: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 2042:
1.315 schwarze 2043: deftype = ROFFDEF_USER | ROFFDEF_REN;
2044: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
2045: switch (deftype) {
2046: case ROFFDEF_USER:
2047: t = ROFF_USERDEF;
2048: break;
2049: case ROFFDEF_REN:
2050: t = ROFF_RENAMED;
2051: break;
2052: default:
2053: t = roffhash_find(r->reqtab, mac, maclen);
2054: break;
2055: }
1.294 schwarze 2056: if (t != TOKEN_NONE)
1.214 schwarze 2057: *pos = cp - buf;
1.325 schwarze 2058: else if (deftype == ROFFDEF_UNDEF) {
2059: /* Using an undefined macro defines it to be empty. */
2060: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
2061: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
2062: }
1.277 schwarze 2063: return t;
1.67 kristaps 2064: }
2065:
1.266 schwarze 2066: /* --- handling of request blocks ----------------------------------------- */
2067:
1.375 schwarze 2068: /*
2069: * Close a macro definition block or an "ignore" block.
2070: */
1.340 schwarze 2071: static int
1.76 kristaps 2072: roff_cblock(ROFF_ARGS)
1.67 kristaps 2073: {
1.375 schwarze 2074: int rr;
1.79 kristaps 2075:
1.238 schwarze 2076: if (r->last == NULL) {
1.350 schwarze 2077: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2078: return ROFF_IGN;
1.76 kristaps 2079: }
1.67 kristaps 2080:
1.81 kristaps 2081: switch (r->last->tok) {
1.207 schwarze 2082: case ROFF_am:
2083: case ROFF_ami:
2084: case ROFF_de:
2085: case ROFF_dei:
2086: case ROFF_ig:
1.81 kristaps 2087: break;
1.375 schwarze 2088: case ROFF_am1:
2089: case ROFF_de1:
2090: /* Remapped in roff_block(). */
2091: abort();
1.81 kristaps 2092: default:
1.350 schwarze 2093: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2094: return ROFF_IGN;
1.76 kristaps 2095: }
1.67 kristaps 2096:
1.375 schwarze 2097: roffnode_pop(r);
2098: roffnode_cleanscope(r);
2099:
2100: /*
2101: * If a conditional block with braces is still open,
2102: * check for "\}" block end markers.
2103: */
2104:
2105: if (r->last != NULL && r->last->endspan < 0) {
2106: rr = 1; /* If arguments follow "\}", warn about them. */
2107: roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
2108: }
2109:
1.238 schwarze 2110: if (buf->buf[pos] != '\0')
1.350 schwarze 2111: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 2112: ".. %s", buf->buf + pos);
1.71 kristaps 2113:
1.277 schwarze 2114: return ROFF_IGN;
1.67 kristaps 2115: }
2116:
1.364 schwarze 2117: /*
2118: * Pop all nodes ending at the end of the current input line.
2119: * Return the number of loops ended.
2120: */
1.340 schwarze 2121: static int
1.76 kristaps 2122: roffnode_cleanscope(struct roff *r)
1.67 kristaps 2123: {
1.340 schwarze 2124: int inloop;
1.67 kristaps 2125:
1.340 schwarze 2126: inloop = 0;
1.375 schwarze 2127: while (r->last != NULL && r->last->endspan > 0) {
1.173 schwarze 2128: if (--r->last->endspan != 0)
1.76 kristaps 2129: break;
1.340 schwarze 2130: inloop += roffnode_pop(r);
1.76 kristaps 2131: }
1.340 schwarze 2132: return inloop;
1.67 kristaps 2133: }
2134:
1.364 schwarze 2135: /*
1.375 schwarze 2136: * Handle the closing "\}" of a conditional block.
1.364 schwarze 2137: * Apart from generating warnings, this only pops nodes.
2138: * Return the number of loops ended.
2139: */
1.340 schwarze 2140: static int
1.195 schwarze 2141: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 2142: {
1.76 kristaps 2143: if (NULL == r->last) {
1.350 schwarze 2144: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2145: return 0;
1.76 kristaps 2146: }
2147:
1.82 kristaps 2148: switch (r->last->tok) {
1.207 schwarze 2149: case ROFF_el:
2150: case ROFF_ie:
2151: case ROFF_if:
1.340 schwarze 2152: case ROFF_while:
1.82 kristaps 2153: break;
2154: default:
1.350 schwarze 2155: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2156: return 0;
1.75 kristaps 2157: }
2158:
1.76 kristaps 2159: if (r->last->endspan > -1) {
1.350 schwarze 2160: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2161: return 0;
1.76 kristaps 2162: }
2163:
1.340 schwarze 2164: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 2165: }
2166:
1.340 schwarze 2167: static int
1.80 kristaps 2168: roff_block(ROFF_ARGS)
1.76 kristaps 2169: {
1.315 schwarze 2170: const char *name, *value;
2171: char *call, *cp, *iname, *rname;
2172: size_t csz, namesz, rsz;
2173: int deftype;
1.106 kristaps 2174:
1.220 schwarze 2175: /* Ignore groff compatibility mode for now. */
1.76 kristaps 2176:
1.238 schwarze 2177: if (tok == ROFF_de1)
1.220 schwarze 2178: tok = ROFF_de;
1.251 schwarze 2179: else if (tok == ROFF_dei1)
2180: tok = ROFF_dei;
1.238 schwarze 2181: else if (tok == ROFF_am1)
1.220 schwarze 2182: tok = ROFF_am;
1.251 schwarze 2183: else if (tok == ROFF_ami1)
2184: tok = ROFF_ami;
1.220 schwarze 2185:
2186: /* Parse the macro name argument. */
2187:
1.238 schwarze 2188: cp = buf->buf + pos;
2189: if (tok == ROFF_ig) {
1.220 schwarze 2190: iname = NULL;
2191: namesz = 0;
2192: } else {
2193: iname = cp;
2194: namesz = roff_getname(r, &cp, ln, ppos);
2195: iname[namesz] = '\0';
2196: }
1.107 kristaps 2197:
1.220 schwarze 2198: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 2199:
1.238 schwarze 2200: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2201: deftype = ROFFDEF_USER;
2202: name = roff_getstrn(r, iname, namesz, &deftype);
2203: if (name == NULL) {
1.350 schwarze 2204: mandoc_msg(MANDOCERR_STR_UNDEF,
2205: ln, (int)(iname - buf->buf),
1.220 schwarze 2206: "%.*s", (int)namesz, iname);
2207: namesz = 0;
2208: } else
2209: namesz = strlen(name);
2210: } else
2211: name = iname;
1.107 kristaps 2212:
1.238 schwarze 2213: if (namesz == 0 && tok != ROFF_ig) {
1.350 schwarze 2214: mandoc_msg(MANDOCERR_REQ_EMPTY,
2215: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2216: return ROFF_IGN;
1.220 schwarze 2217: }
1.80 kristaps 2218:
1.106 kristaps 2219: roffnode_push(r, tok, name, ln, ppos);
2220:
2221: /*
2222: * At the beginning of a `de' macro, clear the existing string
2223: * with the same name, if there is one. New content will be
1.193 schwarze 2224: * appended from roff_block_text() in multiline mode.
1.106 kristaps 2225: */
1.107 kristaps 2226:
1.311 schwarze 2227: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 2228: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 2229: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 2230: } else if (tok == ROFF_am || tok == ROFF_ami) {
2231: deftype = ROFFDEF_ANY;
2232: value = roff_getstrn(r, iname, namesz, &deftype);
2233: switch (deftype) { /* Before appending, ... */
2234: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2235: roff_setstrn(&r->strtab, name, namesz,
2236: value, strlen(value), 0);
2237: break;
2238: case ROFFDEF_REN: /* call original standard macro. */
2239: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2240: (int)strlen(value), value);
2241: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2242: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2243: free(call);
2244: break;
2245: case ROFFDEF_STD: /* rename and call standard macro. */
2246: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2247: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2248: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2249: (int)rsz, rname);
2250: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2251: free(call);
2252: free(rname);
2253: break;
2254: default:
2255: break;
2256: }
1.311 schwarze 2257: }
1.76 kristaps 2258:
1.238 schwarze 2259: if (*cp == '\0')
1.277 schwarze 2260: return ROFF_IGN;
1.78 kristaps 2261:
1.220 schwarze 2262: /* Get the custom end marker. */
1.107 kristaps 2263:
1.220 schwarze 2264: iname = cp;
1.213 schwarze 2265: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 2266:
2267: /* Resolve the end marker if it is indirect. */
2268:
1.238 schwarze 2269: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2270: deftype = ROFFDEF_USER;
2271: name = roff_getstrn(r, iname, namesz, &deftype);
2272: if (name == NULL) {
1.350 schwarze 2273: mandoc_msg(MANDOCERR_STR_UNDEF,
2274: ln, (int)(iname - buf->buf),
1.220 schwarze 2275: "%.*s", (int)namesz, iname);
2276: namesz = 0;
2277: } else
2278: namesz = strlen(name);
2279: } else
2280: name = iname;
2281:
1.213 schwarze 2282: if (namesz)
2283: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2284:
1.238 schwarze 2285: if (*cp != '\0')
1.350 schwarze 2286: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2287: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2288:
1.277 schwarze 2289: return ROFF_IGN;
1.78 kristaps 2290: }
2291:
1.340 schwarze 2292: static int
1.80 kristaps 2293: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2294: {
1.294 schwarze 2295: enum roff_tok t;
1.79 kristaps 2296: int i, j;
2297:
2298: /*
1.385 schwarze 2299: * If a custom end marker is a user-defined or predefined macro
2300: * or a request, interpret it.
1.79 kristaps 2301: */
2302:
2303: if (r->last->end) {
1.130 kristaps 2304: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2305: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2306: break;
2307:
1.238 schwarze 2308: if (r->last->end[j] == '\0' &&
2309: (buf->buf[i] == '\0' ||
2310: buf->buf[i] == ' ' ||
2311: buf->buf[i] == '\t')) {
1.79 kristaps 2312: roffnode_pop(r);
2313: roffnode_cleanscope(r);
2314:
1.238 schwarze 2315: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2316: i++;
2317:
2318: pos = i;
1.238 schwarze 2319: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2320: TOKEN_NONE)
1.277 schwarze 2321: return ROFF_RERUN;
2322: return ROFF_IGN;
1.79 kristaps 2323: }
2324: }
2325:
1.385 schwarze 2326: /* Handle the standard end marker. */
1.79 kristaps 2327:
1.238 schwarze 2328: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.385 schwarze 2329: if (t == ROFF_cblock)
2330: return roff_cblock(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2331:
1.385 schwarze 2332: /* Not an end marker, so append the line to the block. */
1.79 kristaps 2333:
1.385 schwarze 2334: if (tok != ROFF_ig)
2335: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
2336: return ROFF_IGN;
1.79 kristaps 2337: }
2338:
1.340 schwarze 2339: static int
1.80 kristaps 2340: roff_block_text(ROFF_ARGS)
1.78 kristaps 2341: {
2342:
1.238 schwarze 2343: if (tok != ROFF_ig)
2344: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2345:
1.277 schwarze 2346: return ROFF_IGN;
1.78 kristaps 2347: }
2348:
1.375 schwarze 2349: /*
2350: * Check for a closing "\}" and handle it.
2351: * In this function, the final "int *offs" argument is used for
2352: * different purposes than elsewhere:
2353: * Input: *offs == 0: caller wants to discard arguments following \}
2354: * *offs == 1: caller wants to preserve text following \}
2355: * Output: *offs = 0: tell caller to discard input line
2356: * *offs = 1: tell caller to use input line
2357: */
1.340 schwarze 2358: static int
1.375 schwarze 2359: roff_cond_checkend(ROFF_ARGS)
1.82 kristaps 2360: {
1.340 schwarze 2361: char *ep;
2362: int endloop, irc, rr;
1.82 kristaps 2363:
1.340 schwarze 2364: irc = ROFF_IGN;
1.82 kristaps 2365: rr = r->last->rule;
1.340 schwarze 2366: endloop = tok != ROFF_while ? ROFF_IGN :
2367: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2368: if (roffnode_cleanscope(r))
2369: irc |= endloop;
1.144 kristaps 2370:
1.196 schwarze 2371: /*
1.375 schwarze 2372: * If "\}" occurs on a macro line without a preceding macro or
2373: * a text line contains nothing else, drop the line completely.
1.196 schwarze 2374: */
2375:
1.238 schwarze 2376: ep = buf->buf + pos;
1.375 schwarze 2377: if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))
1.198 schwarze 2378: rr = 0;
1.196 schwarze 2379:
1.343 schwarze 2380: /*
1.375 schwarze 2381: * The closing delimiter "\}" rewinds the conditional scope
1.343 schwarze 2382: * but is otherwise ignored when interpreting the line.
2383: */
1.144 kristaps 2384:
1.238 schwarze 2385: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2386: switch (ep[1]) {
2387: case '}':
1.376 schwarze 2388: if (ep[2] == '\0')
2389: ep[0] = '\0';
2390: else if (rr)
1.375 schwarze 2391: ep[1] = '&';
2392: else
2393: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2394: if (roff_ccond(r, ln, ep - buf->buf))
2395: irc |= endloop;
1.318 schwarze 2396: break;
2397: case '\0':
2398: ++ep;
2399: break;
2400: default:
2401: ep += 2;
2402: break;
1.197 schwarze 2403: }
1.177 schwarze 2404: }
1.375 schwarze 2405: *offs = rr;
2406: return irc;
2407: }
1.318 schwarze 2408:
1.375 schwarze 2409: /*
2410: * Parse and process a request or macro line in conditional scope.
2411: */
2412: static int
2413: roff_cond_sub(ROFF_ARGS)
2414: {
2415: struct roffnode *bl;
1.386 schwarze 2416: int irc, rr, spos;
1.375 schwarze 2417: enum roff_tok t;
2418:
2419: rr = 0; /* If arguments follow "\}", skip them. */
2420: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.386 schwarze 2421: spos = pos;
1.368 schwarze 2422: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2423:
1.318 schwarze 2424: /*
1.386 schwarze 2425: * Handle requests and macros if the conditional evaluated
2426: * to true or if they are structurally required.
2427: * The .break request is always handled specially.
1.318 schwarze 2428: */
2429:
1.364 schwarze 2430: if (t == ROFF_break) {
2431: if (irc & ROFF_LOOPMASK)
2432: irc = ROFF_IGN | ROFF_LOOPEXIT;
2433: else if (rr) {
2434: for (bl = r->last; bl != NULL; bl = bl->parent) {
2435: bl->rule = 0;
2436: if (bl->tok == ROFF_while)
2437: break;
2438: }
2439: }
1.386 schwarze 2440: } else if (rr || (t < TOKEN_NONE && roffs[t].flags & ROFFMAC_STRUCT)) {
2441: irc |= roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1.383 schwarze 2442: if (irc & ROFF_WHILE)
2443: irc &= ~(ROFF_LOOPCONT | ROFF_LOOPEXIT);
1.386 schwarze 2444: }
1.340 schwarze 2445: return irc;
1.82 kristaps 2446: }
2447:
1.375 schwarze 2448: /*
2449: * Parse and process a text line in conditional scope.
2450: */
1.340 schwarze 2451: static int
1.82 kristaps 2452: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2453: {
1.375 schwarze 2454: int irc, rr;
1.343 schwarze 2455:
1.375 schwarze 2456: rr = 1; /* If arguments follow "\}", preserve them. */
2457: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.340 schwarze 2458: if (rr)
2459: irc |= ROFF_CONT;
2460: return irc;
1.74 kristaps 2461: }
2462:
1.266 schwarze 2463: /* --- handling of numeric and conditional expressions -------------------- */
2464:
1.204 schwarze 2465: /*
2466: * Parse a single signed integer number. Stop at the first non-digit.
2467: * If there is at least one digit, return success and advance the
2468: * parse point, else return failure and let the parse point unchanged.
2469: * Ignore overflows, treat them just like the C language.
2470: */
1.184 schwarze 2471: static int
1.261 schwarze 2472: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2473: {
1.261 schwarze 2474: int myres, scaled, n, p;
1.206 schwarze 2475:
2476: if (NULL == res)
2477: res = &myres;
1.184 schwarze 2478:
2479: p = *pos;
2480: n = v[p] == '-';
1.261 schwarze 2481: if (n || v[p] == '+')
1.184 schwarze 2482: p++;
2483:
1.261 schwarze 2484: if (flags & ROFFNUM_WHITE)
2485: while (isspace((unsigned char)v[p]))
2486: p++;
2487:
1.184 schwarze 2488: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2489: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2490: if (p == *pos + n)
2491: return 0;
2492:
2493: if (n)
2494: *res = -*res;
2495:
1.254 schwarze 2496: /* Each number may be followed by one optional scaling unit. */
2497:
2498: switch (v[p]) {
2499: case 'f':
1.261 schwarze 2500: scaled = *res * 65536;
1.254 schwarze 2501: break;
2502: case 'i':
1.261 schwarze 2503: scaled = *res * 240;
1.254 schwarze 2504: break;
2505: case 'c':
1.261 schwarze 2506: scaled = *res * 240 / 2.54;
1.254 schwarze 2507: break;
2508: case 'v':
2509: case 'P':
1.261 schwarze 2510: scaled = *res * 40;
1.254 schwarze 2511: break;
2512: case 'm':
2513: case 'n':
1.261 schwarze 2514: scaled = *res * 24;
1.254 schwarze 2515: break;
2516: case 'p':
1.261 schwarze 2517: scaled = *res * 10 / 3;
1.254 schwarze 2518: break;
2519: case 'u':
1.261 schwarze 2520: scaled = *res;
1.254 schwarze 2521: break;
2522: case 'M':
1.261 schwarze 2523: scaled = *res * 6 / 25;
1.254 schwarze 2524: break;
2525: default:
1.261 schwarze 2526: scaled = *res;
1.254 schwarze 2527: p--;
2528: break;
2529: }
1.261 schwarze 2530: if (flags & ROFFNUM_SCALE)
2531: *res = scaled;
1.254 schwarze 2532:
2533: *pos = p + 1;
1.277 schwarze 2534: return 1;
1.184 schwarze 2535: }
2536:
1.198 schwarze 2537: /*
2538: * Evaluate a string comparison condition.
2539: * The first character is the delimiter.
2540: * Succeed if the string up to its second occurrence
2541: * matches the string up to its third occurence.
2542: * Advance the cursor after the third occurrence
2543: * or lacking that, to the end of the line.
2544: */
2545: static int
2546: roff_evalstrcond(const char *v, int *pos)
2547: {
2548: const char *s1, *s2, *s3;
2549: int match;
2550:
2551: match = 0;
2552: s1 = v + *pos; /* initial delimiter */
2553: s2 = s1 + 1; /* for scanning the first string */
2554: s3 = strchr(s2, *s1); /* for scanning the second string */
2555:
2556: if (NULL == s3) /* found no middle delimiter */
2557: goto out;
2558:
2559: while ('\0' != *++s3) {
2560: if (*s2 != *s3) { /* mismatch */
2561: s3 = strchr(s3, *s1);
2562: break;
2563: }
2564: if (*s3 == *s1) { /* found the final delimiter */
2565: match = 1;
2566: break;
2567: }
2568: s2++;
2569: }
2570:
2571: out:
2572: if (NULL == s3)
2573: s3 = strchr(s2, '\0');
1.242 schwarze 2574: else if (*s3 != '\0')
1.198 schwarze 2575: s3++;
2576: *pos = s3 - v;
1.277 schwarze 2577: return match;
1.198 schwarze 2578: }
2579:
1.204 schwarze 2580: /*
2581: * Evaluate an optionally negated single character, numerical,
2582: * or string condition.
2583: */
1.198 schwarze 2584: static int
1.271 schwarze 2585: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2586: {
1.336 schwarze 2587: const char *start, *end;
2588: char *cp, *name;
2589: size_t sz;
2590: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2591:
1.198 schwarze 2592: if ('!' == v[*pos]) {
2593: wanttrue = 0;
2594: (*pos)++;
2595: } else
2596: wanttrue = 1;
2597:
1.88 kristaps 2598: switch (v[*pos]) {
1.240 schwarze 2599: case '\0':
1.277 schwarze 2600: return 0;
1.207 schwarze 2601: case 'n':
2602: case 'o':
1.88 kristaps 2603: (*pos)++;
1.277 schwarze 2604: return wanttrue;
1.207 schwarze 2605: case 'e':
2606: case 't':
1.239 schwarze 2607: case 'v':
1.88 kristaps 2608: (*pos)++;
1.277 schwarze 2609: return !wanttrue;
1.336 schwarze 2610: case 'c':
2611: do {
2612: (*pos)++;
2613: } while (v[*pos] == ' ');
2614:
2615: /*
2616: * Quirk for groff compatibility:
2617: * The horizontal tab is neither available nor unavailable.
2618: */
2619:
2620: if (v[*pos] == '\t') {
2621: (*pos)++;
2622: return 0;
2623: }
2624:
2625: /* Printable ASCII characters are available. */
2626:
2627: if (v[*pos] != '\\') {
2628: (*pos)++;
2629: return wanttrue;
2630: }
2631:
2632: end = v + ++*pos;
2633: switch (mandoc_escape(&end, &start, &len)) {
2634: case ESCAPE_SPECIAL:
2635: istrue = mchars_spec2cp(start, len) != -1;
2636: break;
2637: case ESCAPE_UNICODE:
2638: istrue = 1;
2639: break;
2640: case ESCAPE_NUMBERED:
2641: istrue = mchars_num2char(start, len) != -1;
2642: break;
2643: default:
2644: istrue = !wanttrue;
2645: break;
2646: }
2647: *pos = end - v;
2648: return istrue == wanttrue;
1.310 schwarze 2649: case 'd':
1.271 schwarze 2650: case 'r':
1.310 schwarze 2651: cp = v + *pos + 1;
2652: while (*cp == ' ')
2653: cp++;
2654: name = cp;
2655: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2656: if (sz == 0)
2657: istrue = 0;
2658: else if (v[*pos] == 'r')
2659: istrue = roff_hasregn(r, name, sz);
2660: else {
2661: deftype = ROFFDEF_ANY;
2662: roff_getstrn(r, name, sz, &deftype);
2663: istrue = !!deftype;
2664: }
1.363 schwarze 2665: *pos = (name + sz) - v;
1.310 schwarze 2666: return istrue == wanttrue;
1.88 kristaps 2667: default:
2668: break;
2669: }
2670:
1.241 schwarze 2671: savepos = *pos;
1.261 schwarze 2672: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2673: return (number > 0) == wanttrue;
1.241 schwarze 2674: else if (*pos == savepos)
1.277 schwarze 2675: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2676: else
1.277 schwarze 2677: return 0;
1.88 kristaps 2678: }
2679:
1.340 schwarze 2680: static int
1.103 kristaps 2681: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2682: {
1.123 schwarze 2683:
1.277 schwarze 2684: return ROFF_IGN;
1.89 kristaps 2685: }
2686:
1.340 schwarze 2687: static int
1.251 schwarze 2688: roff_insec(ROFF_ARGS)
2689: {
2690:
1.350 schwarze 2691: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2692: return ROFF_IGN;
1.251 schwarze 2693: }
2694:
1.340 schwarze 2695: static int
1.251 schwarze 2696: roff_unsupp(ROFF_ARGS)
2697: {
2698:
1.350 schwarze 2699: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2700: return ROFF_IGN;
1.251 schwarze 2701: }
2702:
1.340 schwarze 2703: static int
1.82 kristaps 2704: roff_cond(ROFF_ARGS)
1.74 kristaps 2705: {
1.340 schwarze 2706: int irc;
1.173 schwarze 2707:
2708: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2709:
1.207 schwarze 2710: /*
1.134 kristaps 2711: * An `.el' has no conditional body: it will consume the value
2712: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2713: * defaults to DENY.
1.134 kristaps 2714: *
2715: * If we're not an `el', however, then evaluate the conditional.
2716: */
1.133 kristaps 2717:
1.238 schwarze 2718: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2719: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2720: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2721:
1.134 kristaps 2722: /*
2723: * An if-else will put the NEGATION of the current evaluated
2724: * conditional into the stack of rules.
2725: */
2726:
1.238 schwarze 2727: if (tok == ROFF_ie) {
1.223 schwarze 2728: if (r->rstackpos + 1 == r->rstacksz) {
2729: r->rstacksz += 16;
2730: r->rstack = mandoc_reallocarray(r->rstack,
2731: r->rstacksz, sizeof(int));
1.134 kristaps 2732: }
1.198 schwarze 2733: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2734: }
1.88 kristaps 2735:
2736: /* If the parent has false as its rule, then so do we. */
2737:
1.198 schwarze 2738: if (r->last->parent && !r->last->parent->rule)
2739: r->last->rule = 0;
1.88 kristaps 2740:
2741: /*
1.173 schwarze 2742: * Determine scope.
2743: * If there is nothing on the line after the conditional,
2744: * not even whitespace, use next-line scope.
1.340 schwarze 2745: * Except that .while does not support next-line scope.
1.88 kristaps 2746: */
1.74 kristaps 2747:
1.340 schwarze 2748: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2749: r->last->endspan = 2;
2750: goto out;
2751: }
2752:
1.238 schwarze 2753: while (buf->buf[pos] == ' ')
1.173 schwarze 2754: pos++;
2755:
2756: /* An opening brace requests multiline scope. */
1.75 kristaps 2757:
1.238 schwarze 2758: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2759: r->last->endspan = -1;
2760: pos += 2;
1.272 schwarze 2761: while (buf->buf[pos] == ' ')
2762: pos++;
1.173 schwarze 2763: goto out;
1.207 schwarze 2764: }
1.74 kristaps 2765:
1.77 kristaps 2766: /*
1.173 schwarze 2767: * Anything else following the conditional causes
2768: * single-line scope. Warn if the scope contains
2769: * nothing but trailing whitespace.
1.77 kristaps 2770: */
2771:
1.238 schwarze 2772: if (buf->buf[pos] == '\0')
1.350 schwarze 2773: mandoc_msg(MANDOCERR_COND_EMPTY,
2774: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2775:
1.173 schwarze 2776: r->last->endspan = 1;
1.74 kristaps 2777:
1.173 schwarze 2778: out:
1.75 kristaps 2779: *offs = pos;
1.340 schwarze 2780: irc = ROFF_RERUN;
2781: if (tok == ROFF_while)
2782: irc |= ROFF_WHILE;
2783: return irc;
1.83 schwarze 2784: }
2785:
1.340 schwarze 2786: static int
1.92 schwarze 2787: roff_ds(ROFF_ARGS)
2788: {
1.212 schwarze 2789: char *string;
2790: const char *name;
2791: size_t namesz;
1.96 kristaps 2792:
1.251 schwarze 2793: /* Ignore groff compatibility mode for now. */
2794:
2795: if (tok == ROFF_ds1)
2796: tok = ROFF_ds;
2797: else if (tok == ROFF_as1)
2798: tok = ROFF_as;
2799:
1.96 kristaps 2800: /*
1.212 schwarze 2801: * The first word is the name of the string.
2802: * If it is empty or terminated by an escape sequence,
2803: * abort the `ds' request without defining anything.
1.96 kristaps 2804: */
1.92 schwarze 2805:
1.238 schwarze 2806: name = string = buf->buf + pos;
2807: if (*name == '\0')
1.277 schwarze 2808: return ROFF_IGN;
1.92 schwarze 2809:
1.212 schwarze 2810: namesz = roff_getname(r, &string, ln, pos);
1.363 schwarze 2811: switch (name[namesz]) {
2812: case '\\':
1.277 schwarze 2813: return ROFF_IGN;
1.363 schwarze 2814: case '\t':
2815: string = buf->buf + pos + namesz;
2816: break;
2817: default:
2818: break;
2819: }
1.212 schwarze 2820:
2821: /* Read past the initial double-quote, if any. */
1.238 schwarze 2822: if (*string == '"')
1.92 schwarze 2823: string++;
2824:
1.96 kristaps 2825: /* The rest is the value. */
1.212 schwarze 2826: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2827: ROFF_as == tok);
1.311 schwarze 2828: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2829: return ROFF_IGN;
1.92 schwarze 2830: }
2831:
1.204 schwarze 2832: /*
2833: * Parse a single operator, one or two characters long.
2834: * If the operator is recognized, return success and advance the
2835: * parse point, else return failure and let the parse point unchanged.
2836: */
2837: static int
2838: roff_getop(const char *v, int *pos, char *res)
2839: {
2840:
2841: *res = v[*pos];
2842:
2843: switch (*res) {
1.207 schwarze 2844: case '+':
2845: case '-':
2846: case '*':
2847: case '/':
2848: case '%':
2849: case '&':
2850: case ':':
1.204 schwarze 2851: break;
2852: case '<':
2853: switch (v[*pos + 1]) {
1.207 schwarze 2854: case '=':
1.204 schwarze 2855: *res = 'l';
2856: (*pos)++;
2857: break;
1.207 schwarze 2858: case '>':
1.204 schwarze 2859: *res = '!';
2860: (*pos)++;
2861: break;
1.207 schwarze 2862: case '?':
1.204 schwarze 2863: *res = 'i';
2864: (*pos)++;
2865: break;
2866: default:
2867: break;
2868: }
2869: break;
2870: case '>':
2871: switch (v[*pos + 1]) {
1.207 schwarze 2872: case '=':
1.204 schwarze 2873: *res = 'g';
2874: (*pos)++;
2875: break;
1.207 schwarze 2876: case '?':
1.204 schwarze 2877: *res = 'a';
2878: (*pos)++;
2879: break;
2880: default:
2881: break;
2882: }
2883: break;
2884: case '=':
2885: if ('=' == v[*pos + 1])
2886: (*pos)++;
2887: break;
2888: default:
1.277 schwarze 2889: return 0;
1.204 schwarze 2890: }
2891: (*pos)++;
2892:
1.277 schwarze 2893: return *res;
1.204 schwarze 2894: }
2895:
2896: /*
2897: * Evaluate either a parenthesized numeric expression
2898: * or a single signed integer number.
2899: */
2900: static int
1.235 schwarze 2901: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2902: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2903: {
2904:
2905: if ('(' != v[*pos])
1.277 schwarze 2906: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2907:
2908: (*pos)++;
1.261 schwarze 2909: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2910: return 0;
1.204 schwarze 2911:
1.206 schwarze 2912: /*
2913: * Omission of the closing parenthesis
2914: * is an error in validation mode,
2915: * but ignored in evaluation mode.
2916: */
2917:
1.204 schwarze 2918: if (')' == v[*pos])
2919: (*pos)++;
1.206 schwarze 2920: else if (NULL == res)
1.277 schwarze 2921: return 0;
1.204 schwarze 2922:
1.277 schwarze 2923: return 1;
1.204 schwarze 2924: }
2925:
2926: /*
2927: * Evaluate a complete numeric expression.
2928: * Proceed left to right, there is no concept of precedence.
2929: */
2930: static int
1.235 schwarze 2931: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2932: int *pos, int *res, int flags)
1.204 schwarze 2933: {
2934: int mypos, operand2;
2935: char operator;
2936:
2937: if (NULL == pos) {
2938: mypos = 0;
2939: pos = &mypos;
2940: }
2941:
1.261 schwarze 2942: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2943: while (isspace((unsigned char)v[*pos]))
2944: (*pos)++;
2945:
1.261 schwarze 2946: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2947: return 0;
1.204 schwarze 2948:
2949: while (1) {
1.261 schwarze 2950: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2951: while (isspace((unsigned char)v[*pos]))
2952: (*pos)++;
2953:
2954: if ( ! roff_getop(v, pos, &operator))
2955: break;
2956:
1.261 schwarze 2957: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2958: while (isspace((unsigned char)v[*pos]))
2959: (*pos)++;
2960:
1.261 schwarze 2961: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2962: return 0;
1.204 schwarze 2963:
1.261 schwarze 2964: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2965: while (isspace((unsigned char)v[*pos]))
2966: (*pos)++;
1.206 schwarze 2967:
2968: if (NULL == res)
2969: continue;
1.204 schwarze 2970:
2971: switch (operator) {
1.207 schwarze 2972: case '+':
1.204 schwarze 2973: *res += operand2;
2974: break;
1.207 schwarze 2975: case '-':
1.204 schwarze 2976: *res -= operand2;
2977: break;
1.207 schwarze 2978: case '*':
1.204 schwarze 2979: *res *= operand2;
2980: break;
1.207 schwarze 2981: case '/':
1.244 schwarze 2982: if (operand2 == 0) {
1.235 schwarze 2983: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2984: ln, *pos, "%s", v);
1.234 kristaps 2985: *res = 0;
2986: break;
2987: }
1.204 schwarze 2988: *res /= operand2;
2989: break;
1.207 schwarze 2990: case '%':
1.244 schwarze 2991: if (operand2 == 0) {
2992: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2993: ln, *pos, "%s", v);
1.244 schwarze 2994: *res = 0;
2995: break;
2996: }
1.204 schwarze 2997: *res %= operand2;
2998: break;
1.207 schwarze 2999: case '<':
1.204 schwarze 3000: *res = *res < operand2;
3001: break;
1.207 schwarze 3002: case '>':
1.204 schwarze 3003: *res = *res > operand2;
3004: break;
1.207 schwarze 3005: case 'l':
1.204 schwarze 3006: *res = *res <= operand2;
3007: break;
1.207 schwarze 3008: case 'g':
1.204 schwarze 3009: *res = *res >= operand2;
3010: break;
1.207 schwarze 3011: case '=':
1.204 schwarze 3012: *res = *res == operand2;
3013: break;
1.207 schwarze 3014: case '!':
1.204 schwarze 3015: *res = *res != operand2;
3016: break;
1.207 schwarze 3017: case '&':
1.204 schwarze 3018: *res = *res && operand2;
3019: break;
1.207 schwarze 3020: case ':':
1.204 schwarze 3021: *res = *res || operand2;
3022: break;
1.207 schwarze 3023: case 'i':
1.204 schwarze 3024: if (operand2 < *res)
3025: *res = operand2;
3026: break;
1.207 schwarze 3027: case 'a':
1.204 schwarze 3028: if (operand2 > *res)
3029: *res = operand2;
3030: break;
3031: default:
3032: abort();
3033: }
3034: }
1.277 schwarze 3035: return 1;
1.204 schwarze 3036: }
3037:
1.266 schwarze 3038: /* --- register management ------------------------------------------------ */
3039:
1.180 schwarze 3040: void
1.187 schwarze 3041: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 3042: {
1.327 schwarze 3043: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 3044: }
3045:
3046: static void
3047: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 3048: int val, char sign, int step)
1.326 schwarze 3049: {
1.180 schwarze 3050: struct roffreg *reg;
3051:
3052: /* Search for an existing register with the same name. */
3053: reg = r->regtab;
3054:
1.326 schwarze 3055: while (reg != NULL && (reg->key.sz != len ||
3056: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 3057: reg = reg->next;
1.147 kristaps 3058:
1.180 schwarze 3059: if (NULL == reg) {
3060: /* Create a new register. */
3061: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 3062: reg->key.p = mandoc_strndup(name, len);
3063: reg->key.sz = len;
1.187 schwarze 3064: reg->val = 0;
1.327 schwarze 3065: reg->step = 0;
1.180 schwarze 3066: reg->next = r->regtab;
3067: r->regtab = reg;
3068: }
3069:
1.187 schwarze 3070: if ('+' == sign)
3071: reg->val += val;
3072: else if ('-' == sign)
3073: reg->val -= val;
3074: else
3075: reg->val = val;
1.327 schwarze 3076: if (step != INT_MIN)
3077: reg->step = step;
1.147 kristaps 3078: }
3079:
1.192 schwarze 3080: /*
3081: * Handle some predefined read-only number registers.
3082: * For now, return -1 if the requested register is not predefined;
3083: * in case a predefined read-only register having the value -1
3084: * were to turn up, another special value would have to be chosen.
3085: */
3086: static int
1.273 schwarze 3087: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 3088: {
3089:
3090: switch (*name) {
1.273 schwarze 3091: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 3092: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 3093: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 3094: return 0;
1.207 schwarze 3095: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 3096: return 1;
1.207 schwarze 3097: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 3098: return 24;
1.207 schwarze 3099: case 'j': /* Always adjust left margin only. */
1.277 schwarze 3100: return 0;
1.207 schwarze 3101: case 'T': /* Some output device is always defined. */
1.277 schwarze 3102: return 1;
1.207 schwarze 3103: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 3104: return 40;
1.192 schwarze 3105: default:
1.277 schwarze 3106: return -1;
1.192 schwarze 3107: }
3108: }
3109:
1.181 schwarze 3110: int
1.326 schwarze 3111: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 3112: {
1.327 schwarze 3113: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 3114: }
3115:
3116: static int
1.327 schwarze 3117: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 3118: {
3119: struct roffreg *reg;
1.192 schwarze 3120: int val;
3121:
3122: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3123: val = roff_getregro(r, name + 1);
1.192 schwarze 3124: if (-1 != val)
1.277 schwarze 3125: return val;
1.192 schwarze 3126: }
1.181 schwarze 3127:
1.327 schwarze 3128: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 3129: if (len == reg->key.sz &&
1.327 schwarze 3130: 0 == strncmp(name, reg->key.p, len)) {
3131: switch (sign) {
3132: case '+':
3133: reg->val += reg->step;
3134: break;
3135: case '-':
3136: reg->val -= reg->step;
3137: break;
3138: default:
3139: break;
3140: }
1.277 schwarze 3141: return reg->val;
1.327 schwarze 3142: }
3143: }
1.271 schwarze 3144:
1.327 schwarze 3145: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 3146: return 0;
1.271 schwarze 3147: }
3148:
3149: static int
3150: roff_hasregn(const struct roff *r, const char *name, size_t len)
3151: {
3152: struct roffreg *reg;
3153: int val;
3154:
3155: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3156: val = roff_getregro(r, name + 1);
1.271 schwarze 3157: if (-1 != val)
1.277 schwarze 3158: return 1;
1.271 schwarze 3159: }
3160:
3161: for (reg = r->regtab; reg; reg = reg->next)
3162: if (len == reg->key.sz &&
3163: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 3164: return 1;
1.147 kristaps 3165:
1.277 schwarze 3166: return 0;
1.147 kristaps 3167: }
3168:
1.180 schwarze 3169: static void
3170: roff_freereg(struct roffreg *reg)
1.147 kristaps 3171: {
1.180 schwarze 3172: struct roffreg *old_reg;
1.147 kristaps 3173:
1.180 schwarze 3174: while (NULL != reg) {
3175: free(reg->key.p);
3176: old_reg = reg;
3177: reg = reg->next;
3178: free(old_reg);
3179: }
1.147 kristaps 3180: }
1.92 schwarze 3181:
1.340 schwarze 3182: static int
1.89 kristaps 3183: roff_nr(ROFF_ARGS)
1.83 schwarze 3184: {
1.327 schwarze 3185: char *key, *val, *step;
1.212 schwarze 3186: size_t keysz;
1.327 schwarze 3187: int iv, is, len;
1.187 schwarze 3188: char sign;
1.89 kristaps 3189:
1.238 schwarze 3190: key = val = buf->buf + pos;
3191: if (*key == '\0')
1.277 schwarze 3192: return ROFF_IGN;
1.212 schwarze 3193:
3194: keysz = roff_getname(r, &val, ln, pos);
1.363 schwarze 3195: if (key[keysz] == '\\' || key[keysz] == '\t')
1.277 schwarze 3196: return ROFF_IGN;
1.89 kristaps 3197:
1.187 schwarze 3198: sign = *val;
1.238 schwarze 3199: if (sign == '+' || sign == '-')
1.187 schwarze 3200: val++;
3201:
1.327 schwarze 3202: len = 0;
3203: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3204: return ROFF_IGN;
3205:
3206: step = val + len;
3207: while (isspace((unsigned char)*step))
3208: step++;
3209: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3210: is = INT_MIN;
1.109 kristaps 3211:
1.327 schwarze 3212: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 3213: return ROFF_IGN;
1.203 schwarze 3214: }
3215:
1.340 schwarze 3216: static int
1.203 schwarze 3217: roff_rr(ROFF_ARGS)
3218: {
3219: struct roffreg *reg, **prev;
1.212 schwarze 3220: char *name, *cp;
3221: size_t namesz;
1.203 schwarze 3222:
1.238 schwarze 3223: name = cp = buf->buf + pos;
3224: if (*name == '\0')
1.277 schwarze 3225: return ROFF_IGN;
1.212 schwarze 3226: namesz = roff_getname(r, &cp, ln, pos);
3227: name[namesz] = '\0';
1.203 schwarze 3228:
3229: prev = &r->regtab;
3230: while (1) {
3231: reg = *prev;
1.238 schwarze 3232: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 3233: break;
3234: prev = ®->next;
3235: }
1.238 schwarze 3236: if (reg != NULL) {
1.203 schwarze 3237: *prev = reg->next;
3238: free(reg->key.p);
3239: free(reg);
3240: }
1.277 schwarze 3241: return ROFF_IGN;
1.122 schwarze 3242: }
3243:
1.266 schwarze 3244: /* --- handler functions for roff requests -------------------------------- */
3245:
1.340 schwarze 3246: static int
1.122 schwarze 3247: roff_rm(ROFF_ARGS)
3248: {
3249: const char *name;
3250: char *cp;
1.212 schwarze 3251: size_t namesz;
1.122 schwarze 3252:
1.238 schwarze 3253: cp = buf->buf + pos;
3254: while (*cp != '\0') {
1.212 schwarze 3255: name = cp;
1.238 schwarze 3256: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 3257: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 3258: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.363 schwarze 3259: if (name[namesz] == '\\' || name[namesz] == '\t')
1.212 schwarze 3260: break;
1.122 schwarze 3261: }
1.277 schwarze 3262: return ROFF_IGN;
1.178 schwarze 3263: }
3264:
1.340 schwarze 3265: static int
1.178 schwarze 3266: roff_it(ROFF_ARGS)
3267: {
3268: int iv;
3269:
3270: /* Parse the number of lines. */
1.261 schwarze 3271:
3272: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.350 schwarze 3273: mandoc_msg(MANDOCERR_IT_NONUM,
3274: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 3275: return ROFF_IGN;
1.178 schwarze 3276: }
3277:
1.262 schwarze 3278: while (isspace((unsigned char)buf->buf[pos]))
3279: pos++;
3280:
3281: /*
3282: * Arm the input line trap.
3283: * Special-casing "an-trap" is an ugly workaround to cope
3284: * with DocBook stupidly fiddling with man(7) internals.
3285: */
1.261 schwarze 3286:
1.178 schwarze 3287: roffit_lines = iv;
1.262 schwarze 3288: roffit_macro = mandoc_strdup(iv != 1 ||
3289: strcmp(buf->buf + pos, "an-trap") ?
3290: buf->buf + pos : "br");
1.277 schwarze 3291: return ROFF_IGN;
1.175 schwarze 3292: }
3293:
1.340 schwarze 3294: static int
1.175 schwarze 3295: roff_Dd(ROFF_ARGS)
3296: {
1.315 schwarze 3297: int mask;
3298: enum roff_tok t, te;
1.227 schwarze 3299:
1.315 schwarze 3300: switch (tok) {
3301: case ROFF_Dd:
3302: tok = MDOC_Dd;
3303: te = MDOC_MAX;
3304: if (r->format == 0)
3305: r->format = MPARSE_MDOC;
3306: mask = MPARSE_MDOC | MPARSE_QUICK;
3307: break;
3308: case ROFF_TH:
3309: tok = MAN_TH;
3310: te = MAN_MAX;
3311: if (r->format == 0)
3312: r->format = MPARSE_MAN;
3313: mask = MPARSE_QUICK;
3314: break;
3315: default:
3316: abort();
3317: }
3318: if ((r->options & mask) == 0)
3319: for (t = tok; t < te; t++)
3320: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3321: return ROFF_CONT;
1.109 kristaps 3322: }
3323:
1.340 schwarze 3324: static int
1.109 kristaps 3325: roff_TE(ROFF_ARGS)
3326: {
1.361 schwarze 3327: r->man->flags &= ~ROFF_NONOFILL;
1.321 schwarze 3328: if (r->tbl == NULL) {
1.350 schwarze 3329: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3330: return ROFF_IGN;
3331: }
1.346 schwarze 3332: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3333: r->tbl = NULL;
1.258 schwarze 3334: free(buf->buf);
3335: buf->buf = mandoc_strdup(".sp");
3336: buf->sz = 4;
1.329 schwarze 3337: *offs = 0;
1.277 schwarze 3338: return ROFF_REPARSE;
1.258 schwarze 3339: }
1.321 schwarze 3340: r->tbl = NULL;
1.277 schwarze 3341: return ROFF_IGN;
1.112 kristaps 3342: }
3343:
1.340 schwarze 3344: static int
1.112 kristaps 3345: roff_T_(ROFF_ARGS)
3346: {
3347:
3348: if (NULL == r->tbl)
1.350 schwarze 3349: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3350: else
1.296 schwarze 3351: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3352:
1.277 schwarze 3353: return ROFF_IGN;
1.109 kristaps 3354: }
3355:
1.230 schwarze 3356: /*
3357: * Handle in-line equation delimiters.
3358: */
1.340 schwarze 3359: static int
1.238 schwarze 3360: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3361: {
1.233 schwarze 3362: char *cp1, *cp2;
3363: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3364:
1.230 schwarze 3365: /*
3366: * Outside equations, look for an opening delimiter.
3367: * If we are inside an equation, we already know it is
3368: * in-line, or this function wouldn't have been called;
3369: * so look for a closing delimiter.
3370: */
3371:
1.238 schwarze 3372: cp1 = buf->buf + pos;
1.230 schwarze 3373: cp2 = strchr(cp1, r->eqn == NULL ?
3374: r->last_eqn->odelim : r->last_eqn->cdelim);
3375: if (cp2 == NULL)
1.277 schwarze 3376: return ROFF_CONT;
1.230 schwarze 3377:
1.233 schwarze 3378: *cp2++ = '\0';
3379: bef_pr = bef_nl = aft_nl = aft_pr = "";
3380:
3381: /* Handle preceding text, protecting whitespace. */
3382:
1.238 schwarze 3383: if (*buf->buf != '\0') {
1.233 schwarze 3384: if (r->eqn == NULL)
3385: bef_pr = "\\&";
3386: bef_nl = "\n";
3387: }
3388:
3389: /*
3390: * Prepare replacing the delimiter with an equation macro
3391: * and drop leading white space from the equation.
3392: */
1.230 schwarze 3393:
1.233 schwarze 3394: if (r->eqn == NULL) {
3395: while (*cp2 == ' ')
3396: cp2++;
3397: mac = ".EQ";
3398: } else
3399: mac = ".EN";
3400:
3401: /* Handle following text, protecting whitespace. */
3402:
3403: if (*cp2 != '\0') {
3404: aft_nl = "\n";
3405: if (r->eqn != NULL)
3406: aft_pr = "\\&";
3407: }
3408:
3409: /* Do the actual replacement. */
3410:
1.238 schwarze 3411: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3412: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3413: free(buf->buf);
3414: buf->buf = cp1;
1.230 schwarze 3415:
3416: /* Toggle the in-line state of the eqn subsystem. */
3417:
3418: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3419: return ROFF_REPARSE;
1.151 kristaps 3420: }
3421:
1.340 schwarze 3422: static int
1.235 schwarze 3423: roff_EQ(ROFF_ARGS)
1.125 kristaps 3424: {
1.319 schwarze 3425: struct roff_node *n;
3426:
1.356 schwarze 3427: if (r->man->meta.macroset == MACROSET_MAN)
1.322 schwarze 3428: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3429: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3430: if (ln > r->man->last->line)
3431: n->flags |= NODE_LINE;
1.348 schwarze 3432: n->eqn = eqn_box_new();
1.319 schwarze 3433: roff_node_append(r->man, n);
3434: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3435:
1.238 schwarze 3436: assert(r->eqn == NULL);
1.319 schwarze 3437: if (r->last_eqn == NULL)
1.351 schwarze 3438: r->last_eqn = eqn_alloc();
1.319 schwarze 3439: else
3440: eqn_reset(r->last_eqn);
3441: r->eqn = r->last_eqn;
3442: r->eqn->node = n;
1.151 kristaps 3443:
1.238 schwarze 3444: if (buf->buf[pos] != '\0')
1.350 schwarze 3445: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3446: ".EQ %s", buf->buf + pos);
1.151 kristaps 3447:
1.277 schwarze 3448: return ROFF_IGN;
1.125 kristaps 3449: }
3450:
1.340 schwarze 3451: static int
1.125 kristaps 3452: roff_EN(ROFF_ARGS)
3453: {
1.319 schwarze 3454: if (r->eqn != NULL) {
3455: eqn_parse(r->eqn);
3456: r->eqn = NULL;
3457: } else
1.350 schwarze 3458: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3459: if (buf->buf[pos] != '\0')
1.350 schwarze 3460: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3461: "EN %s", buf->buf + pos);
1.277 schwarze 3462: return ROFF_IGN;
1.125 kristaps 3463: }
3464:
1.340 schwarze 3465: static int
1.109 kristaps 3466: roff_TS(ROFF_ARGS)
3467: {
1.321 schwarze 3468: if (r->tbl != NULL) {
1.350 schwarze 3469: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3470: tbl_end(r->tbl, 0);
1.115 kristaps 3471: }
1.361 schwarze 3472: r->man->flags |= ROFF_NONOFILL;
1.351 schwarze 3473: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.346 schwarze 3474: if (r->last_tbl == NULL)
1.321 schwarze 3475: r->first_tbl = r->tbl;
3476: r->last_tbl = r->tbl;
1.297 schwarze 3477: return ROFF_IGN;
3478: }
3479:
1.340 schwarze 3480: static int
1.358 schwarze 3481: roff_noarg(ROFF_ARGS)
3482: {
3483: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3484: man_breakscope(r->man, tok);
3485: if (tok == ROFF_brp)
3486: tok = ROFF_br;
3487: roff_elem_alloc(r->man, ln, ppos, tok);
3488: if (buf->buf[pos] != '\0')
3489: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3490: "%s %s", roff_name[tok], buf->buf + pos);
3491: if (tok == ROFF_nf)
3492: r->man->flags |= ROFF_NOFILL;
3493: else if (tok == ROFF_fi)
3494: r->man->flags &= ~ROFF_NOFILL;
3495: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3496: r->man->next = ROFF_NEXT_SIBLING;
3497: return ROFF_IGN;
3498: }
3499:
3500: static int
1.297 schwarze 3501: roff_onearg(ROFF_ARGS)
3502: {
3503: struct roff_node *n;
3504: char *cp;
1.305 schwarze 3505: int npos;
1.297 schwarze 3506:
1.302 schwarze 3507: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3508: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3509: tok == ROFF_ti))
1.302 schwarze 3510: man_breakscope(r->man, tok);
3511:
1.309 schwarze 3512: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3513: r->man->last = roffce_node;
3514: r->man->next = ROFF_NEXT_SIBLING;
3515: }
3516:
1.297 schwarze 3517: roff_elem_alloc(r->man, ln, ppos, tok);
3518: n = r->man->last;
3519:
3520: cp = buf->buf + pos;
3521: if (*cp != '\0') {
3522: while (*cp != '\0' && *cp != ' ')
3523: cp++;
3524: while (*cp == ' ')
3525: *cp++ = '\0';
3526: if (*cp != '\0')
1.350 schwarze 3527: mandoc_msg(MANDOCERR_ARG_EXCESS,
3528: ln, (int)(cp - buf->buf),
1.297 schwarze 3529: "%s ... %s", roff_name[tok], cp);
3530: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3531: }
3532:
1.309 schwarze 3533: if (tok == ROFF_ce || tok == ROFF_rj) {
3534: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3535: roff_word_alloc(r->man, ln, pos, "1");
3536: r->man->last->flags |= NODE_NOSRC;
3537: }
3538: npos = 0;
3539: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3540: &roffce_lines, 0) == 0) {
1.350 schwarze 3541: mandoc_msg(MANDOCERR_CE_NONUM,
3542: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3543: roffce_lines = 1;
3544: }
3545: if (roffce_lines < 1) {
3546: r->man->last = r->man->last->parent;
3547: roffce_node = NULL;
3548: roffce_lines = 0;
3549: } else
3550: roffce_node = r->man->last->parent;
3551: } else {
3552: n->flags |= NODE_VALID | NODE_ENDED;
3553: r->man->last = n;
3554: }
3555: n->flags |= NODE_LINE;
1.300 schwarze 3556: r->man->next = ROFF_NEXT_SIBLING;
3557: return ROFF_IGN;
3558: }
3559:
1.340 schwarze 3560: static int
1.300 schwarze 3561: roff_manyarg(ROFF_ARGS)
3562: {
3563: struct roff_node *n;
3564: char *sp, *ep;
3565:
3566: roff_elem_alloc(r->man, ln, ppos, tok);
3567: n = r->man->last;
3568:
3569: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3570: while (*ep != '\0' && *ep != ' ')
3571: ep++;
3572: while (*ep == ' ')
3573: *ep++ = '\0';
3574: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3575: }
3576:
3577: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3578: r->man->last = n;
3579: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3580: return ROFF_IGN;
1.251 schwarze 3581: }
3582:
1.340 schwarze 3583: static int
1.311 schwarze 3584: roff_als(ROFF_ARGS)
3585: {
3586: char *oldn, *newn, *end, *value;
3587: size_t oldsz, newsz, valsz;
3588:
3589: newn = oldn = buf->buf + pos;
3590: if (*newn == '\0')
3591: return ROFF_IGN;
3592:
3593: newsz = roff_getname(r, &oldn, ln, pos);
1.363 schwarze 3594: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.311 schwarze 3595: return ROFF_IGN;
3596:
3597: end = oldn;
3598: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3599: if (oldsz == 0)
3600: return ROFF_IGN;
3601:
1.338 schwarze 3602: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3603: (int)oldsz, oldn);
1.311 schwarze 3604: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3605: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3606: free(value);
1.364 schwarze 3607: return ROFF_IGN;
3608: }
3609:
3610: /*
3611: * The .break request only makes sense inside conditionals,
3612: * and that case is already handled in roff_cond_sub().
3613: */
3614: static int
3615: roff_break(ROFF_ARGS)
3616: {
3617: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.296 schwarze 3618: return ROFF_IGN;
1.92 schwarze 3619: }
3620:
1.340 schwarze 3621: static int
1.174 kristaps 3622: roff_cc(ROFF_ARGS)
3623: {
3624: const char *p;
3625:
1.238 schwarze 3626: p = buf->buf + pos;
1.174 kristaps 3627:
1.238 schwarze 3628: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3629: r->control = '\0';
1.174 kristaps 3630:
1.238 schwarze 3631: if (*p != '\0')
1.350 schwarze 3632: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3633: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3634:
1.341 schwarze 3635: return ROFF_IGN;
3636: }
3637:
3638: static int
3639: roff_char(ROFF_ARGS)
3640: {
3641: const char *p, *kp, *vp;
3642: size_t ksz, vsz;
3643: int font;
3644:
3645: /* Parse the character to be replaced. */
3646:
3647: kp = buf->buf + pos;
3648: p = kp + 1;
3649: if (*kp == '\0' || (*kp == '\\' &&
3650: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3651: (*p != ' ' && *p != '\0')) {
1.350 schwarze 3652: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3653: return ROFF_IGN;
3654: }
3655: ksz = p - kp;
3656: while (*p == ' ')
3657: p++;
3658:
3659: /*
3660: * If the replacement string contains a font escape sequence,
3661: * we have to restore the font at the end.
3662: */
3663:
3664: vp = p;
3665: vsz = strlen(p);
3666: font = 0;
3667: while (*p != '\0') {
3668: if (*p++ != '\\')
3669: continue;
3670: switch (mandoc_escape(&p, NULL, NULL)) {
3671: case ESCAPE_FONT:
3672: case ESCAPE_FONTROMAN:
3673: case ESCAPE_FONTITALIC:
3674: case ESCAPE_FONTBOLD:
3675: case ESCAPE_FONTBI:
1.378 schwarze 3676: case ESCAPE_FONTCR:
3677: case ESCAPE_FONTCB:
3678: case ESCAPE_FONTCI:
1.341 schwarze 3679: case ESCAPE_FONTPREV:
3680: font++;
3681: break;
3682: default:
3683: break;
3684: }
3685: }
3686: if (font > 1)
1.350 schwarze 3687: mandoc_msg(MANDOCERR_CHAR_FONT,
3688: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3689:
3690: /*
3691: * Approximate the effect of .char using the .tr tables.
3692: * XXX In groff, .char and .tr interact differently.
3693: */
3694:
3695: if (ksz == 1) {
3696: if (r->xtab == NULL)
3697: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3698: assert((unsigned int)*kp < 128);
3699: free(r->xtab[(int)*kp].p);
3700: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3701: "%s%s", vp, font ? "\fP" : "");
3702: } else {
3703: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3704: if (font)
3705: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3706: }
1.277 schwarze 3707: return ROFF_IGN;
1.174 kristaps 3708: }
3709:
1.340 schwarze 3710: static int
1.303 schwarze 3711: roff_ec(ROFF_ARGS)
3712: {
3713: const char *p;
3714:
3715: p = buf->buf + pos;
3716: if (*p == '\0')
3717: r->escape = '\\';
3718: else {
3719: r->escape = *p;
3720: if (*++p != '\0')
1.350 schwarze 3721: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3722: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3723: }
3724: return ROFF_IGN;
3725: }
3726:
1.340 schwarze 3727: static int
1.303 schwarze 3728: roff_eo(ROFF_ARGS)
3729: {
3730: r->escape = '\0';
3731: if (buf->buf[pos] != '\0')
1.350 schwarze 3732: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3733: ln, pos, "eo %s", buf->buf + pos);
1.384 schwarze 3734: return ROFF_IGN;
3735: }
3736:
3737: static int
3738: roff_mc(ROFF_ARGS)
3739: {
3740: struct roff_node *n;
3741: char *cp;
3742:
3743: /* Parse the first argument. */
3744:
3745: cp = buf->buf + pos;
3746: if (*cp != '\0')
3747: cp++;
3748: if (buf->buf[pos] == '\\') {
3749: switch (mandoc_escape((const char **)&cp, NULL, NULL)) {
3750: case ESCAPE_SPECIAL:
3751: case ESCAPE_UNICODE:
3752: case ESCAPE_NUMBERED:
3753: break;
3754: default:
3755: *cp = '\0';
3756: mandoc_msg(MANDOCERR_MC_ESC, ln, pos,
3757: "mc %s", buf->buf + pos);
3758: buf->buf[pos] = '\0';
3759: break;
3760: }
3761: }
3762:
3763: /* Ignore additional arguments. */
3764:
3765: while (*cp == ' ')
3766: *cp++ = '\0';
3767: if (*cp != '\0') {
3768: mandoc_msg(MANDOCERR_MC_DIST, ln, (int)(cp - buf->buf),
3769: "mc ... %s", cp);
3770: *cp = '\0';
3771: }
3772:
3773: /* Create the .mc node. */
3774:
3775: roff_elem_alloc(r->man, ln, ppos, tok);
3776: n = r->man->last;
3777: if (buf->buf[pos] != '\0')
3778: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
3779: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3780: r->man->last = n;
3781: r->man->next = ROFF_NEXT_SIBLING;
1.303 schwarze 3782: return ROFF_IGN;
1.330 schwarze 3783: }
3784:
1.340 schwarze 3785: static int
1.330 schwarze 3786: roff_nop(ROFF_ARGS)
3787: {
3788: while (buf->buf[pos] == ' ')
3789: pos++;
3790: *offs = pos;
3791: return ROFF_RERUN;
1.303 schwarze 3792: }
3793:
1.340 schwarze 3794: static int
1.164 kristaps 3795: roff_tr(ROFF_ARGS)
3796: {
3797: const char *p, *first, *second;
3798: size_t fsz, ssz;
3799: enum mandoc_esc esc;
3800:
1.238 schwarze 3801: p = buf->buf + pos;
1.164 kristaps 3802:
1.238 schwarze 3803: if (*p == '\0') {
1.350 schwarze 3804: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3805: return ROFF_IGN;
1.164 kristaps 3806: }
3807:
1.238 schwarze 3808: while (*p != '\0') {
1.164 kristaps 3809: fsz = ssz = 1;
3810:
3811: first = p++;
1.238 schwarze 3812: if (*first == '\\') {
1.164 kristaps 3813: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3814: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3815: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3816: (int)(p - buf->buf), "%s", first);
1.277 schwarze 3817: return ROFF_IGN;
1.164 kristaps 3818: }
3819: fsz = (size_t)(p - first);
3820: }
3821:
3822: second = p++;
1.238 schwarze 3823: if (*second == '\\') {
1.164 kristaps 3824: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3825: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3826: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3827: (int)(p - buf->buf), "%s", second);
1.277 schwarze 3828: return ROFF_IGN;
1.164 kristaps 3829: }
3830: ssz = (size_t)(p - second);
1.238 schwarze 3831: } else if (*second == '\0') {
1.350 schwarze 3832: mandoc_msg(MANDOCERR_TR_ODD, ln,
3833: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3834: second = " ";
1.165 kristaps 3835: p--;
1.164 kristaps 3836: }
3837:
1.167 kristaps 3838: if (fsz > 1) {
1.207 schwarze 3839: roff_setstrn(&r->xmbtab, first, fsz,
3840: second, ssz, 0);
1.167 kristaps 3841: continue;
3842: }
3843:
1.238 schwarze 3844: if (r->xtab == NULL)
1.207 schwarze 3845: r->xtab = mandoc_calloc(128,
3846: sizeof(struct roffstr));
1.167 kristaps 3847:
3848: free(r->xtab[(int)*first].p);
3849: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3850: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3851: }
3852:
1.277 schwarze 3853: return ROFF_IGN;
1.164 kristaps 3854: }
3855:
1.339 schwarze 3856: /*
3857: * Implementation of the .return request.
3858: * There is no need to call roff_userret() from here.
3859: * The read module will call that after rewinding the reader stack
3860: * to the place from where the current macro was called.
3861: */
1.340 schwarze 3862: static int
1.339 schwarze 3863: roff_return(ROFF_ARGS)
3864: {
3865: if (r->mstackpos >= 0)
1.340 schwarze 3866: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3867:
1.350 schwarze 3868: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3869: return ROFF_IGN;
3870: }
3871:
1.340 schwarze 3872: static int
1.306 schwarze 3873: roff_rn(ROFF_ARGS)
3874: {
3875: const char *value;
3876: char *oldn, *newn, *end;
3877: size_t oldsz, newsz;
1.315 schwarze 3878: int deftype;
1.306 schwarze 3879:
3880: oldn = newn = buf->buf + pos;
3881: if (*oldn == '\0')
3882: return ROFF_IGN;
3883:
3884: oldsz = roff_getname(r, &newn, ln, pos);
1.363 schwarze 3885: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.306 schwarze 3886: return ROFF_IGN;
3887:
3888: end = newn;
3889: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3890: if (newsz == 0)
3891: return ROFF_IGN;
3892:
1.315 schwarze 3893: deftype = ROFFDEF_ANY;
3894: value = roff_getstrn(r, oldn, oldsz, &deftype);
3895: switch (deftype) {
3896: case ROFFDEF_USER:
1.306 schwarze 3897: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3898: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3899: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3900: break;
3901: case ROFFDEF_PRE:
3902: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3903: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3904: break;
3905: case ROFFDEF_REN:
1.306 schwarze 3906: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3907: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3908: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3909: break;
3910: case ROFFDEF_STD:
1.306 schwarze 3911: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3912: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3913: break;
3914: default:
3915: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3916: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3917: break;
3918: }
1.306 schwarze 3919: return ROFF_IGN;
3920: }
3921:
1.340 schwarze 3922: static int
1.339 schwarze 3923: roff_shift(ROFF_ARGS)
3924: {
3925: struct mctx *ctx;
1.382 schwarze 3926: int argpos, levels, i;
1.339 schwarze 3927:
1.382 schwarze 3928: argpos = pos;
1.339 schwarze 3929: levels = 1;
3930: if (buf->buf[pos] != '\0' &&
3931: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 schwarze 3932: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3933: ln, pos, "shift %s", buf->buf + pos);
3934: levels = 1;
3935: }
3936: if (r->mstackpos < 0) {
1.350 schwarze 3937: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3938: return ROFF_IGN;
3939: }
3940: ctx = r->mstack + r->mstackpos;
3941: if (levels > ctx->argc) {
1.350 schwarze 3942: mandoc_msg(MANDOCERR_SHIFT,
1.382 schwarze 3943: ln, argpos, "%d, but max is %d", levels, ctx->argc);
1.339 schwarze 3944: levels = ctx->argc;
1.382 schwarze 3945: }
3946: if (levels < 0) {
3947: mandoc_msg(MANDOCERR_ARG_NEG, ln, argpos, "shift %d", levels);
3948: levels = 0;
1.339 schwarze 3949: }
3950: if (levels == 0)
3951: return ROFF_IGN;
3952: for (i = 0; i < levels; i++)
3953: free(ctx->argv[i]);
3954: ctx->argc -= levels;
3955: for (i = 0; i < ctx->argc; i++)
3956: ctx->argv[i] = ctx->argv[i + levels];
3957: return ROFF_IGN;
3958: }
3959:
1.340 schwarze 3960: static int
1.105 kristaps 3961: roff_so(ROFF_ARGS)
3962: {
1.249 schwarze 3963: char *name, *cp;
1.105 kristaps 3964:
1.238 schwarze 3965: name = buf->buf + pos;
1.350 schwarze 3966: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3967:
3968: /*
3969: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3970: * opening anything that's not in our cwd or anything beneath
3971: * it. Thus, explicitly disallow traversing up the file-system
3972: * or using absolute paths.
3973: */
3974:
1.238 schwarze 3975: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 schwarze 3976: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3977: buf->sz = mandoc_asprintf(&cp,
3978: ".sp\nSee the file %s.\n.sp", name) + 1;
3979: free(buf->buf);
3980: buf->buf = cp;
3981: *offs = 0;
1.277 schwarze 3982: return ROFF_REPARSE;
1.105 kristaps 3983: }
3984:
3985: *offs = pos;
1.277 schwarze 3986: return ROFF_SO;
1.105 kristaps 3987: }
1.92 schwarze 3988:
1.266 schwarze 3989: /* --- user defined strings and macros ------------------------------------ */
3990:
1.340 schwarze 3991: static int
1.106 kristaps 3992: roff_userdef(ROFF_ARGS)
1.99 kristaps 3993: {
1.339 schwarze 3994: struct mctx *ctx;
3995: char *arg, *ap, *dst, *src;
3996: size_t sz;
3997:
1.365 schwarze 3998: /* If the macro is empty, ignore it altogether. */
3999:
4000: if (*r->current_string == '\0')
4001: return ROFF_IGN;
4002:
1.339 schwarze 4003: /* Initialize a new macro stack context. */
4004:
4005: if (++r->mstackpos == r->mstacksz) {
4006: r->mstack = mandoc_recallocarray(r->mstack,
4007: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
4008: r->mstacksz += 8;
4009: }
4010: ctx = r->mstack + r->mstackpos;
4011: ctx->argc = 0;
4012:
4013: /*
4014: * Collect pointers to macro argument strings,
4015: * NUL-terminating them and escaping quotes.
4016: */
4017:
4018: src = buf->buf + pos;
4019: while (*src != '\0') {
4020: if (ctx->argc == ctx->argsz) {
4021: ctx->argsz += 8;
4022: ctx->argv = mandoc_reallocarray(ctx->argv,
4023: ctx->argsz, sizeof(*ctx->argv));
4024: }
1.355 schwarze 4025: arg = roff_getarg(r, &src, ln, &pos);
1.339 schwarze 4026: sz = 1; /* For the terminating NUL. */
4027: for (ap = arg; *ap != '\0'; ap++)
4028: sz += *ap == '"' ? 4 : 1;
4029: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
4030: for (ap = arg; *ap != '\0'; ap++) {
4031: if (*ap == '"') {
4032: memcpy(dst, "\\(dq", 4);
4033: dst += 4;
4034: } else
4035: *dst++ = *ap;
1.106 kristaps 4036: }
1.339 schwarze 4037: *dst = '\0';
1.355 schwarze 4038: free(arg);
1.337 schwarze 4039: }
4040:
1.339 schwarze 4041: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 4042:
1.238 schwarze 4043: free(buf->buf);
1.339 schwarze 4044: buf->buf = mandoc_strdup(r->current_string);
4045: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 4046: *offs = 0;
1.106 kristaps 4047:
1.365 schwarze 4048: return buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 4049: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 4050: }
1.121 schwarze 4051:
1.306 schwarze 4052: /*
4053: * Calling a high-level macro that was renamed with .rn.
4054: * r->current_string has already been set up by roff_parse().
4055: */
1.340 schwarze 4056: static int
1.306 schwarze 4057: roff_renamed(ROFF_ARGS)
4058: {
4059: char *nbuf;
4060:
1.315 schwarze 4061: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
4062: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 4063: free(buf->buf);
4064: buf->buf = nbuf;
1.329 schwarze 4065: *offs = 0;
1.306 schwarze 4066: return ROFF_CONT;
4067: }
4068:
1.362 schwarze 4069: /*
4070: * Measure the length in bytes of the roff identifier at *cpp
4071: * and advance the pointer to the next word.
4072: */
1.212 schwarze 4073: static size_t
1.121 schwarze 4074: roff_getname(struct roff *r, char **cpp, int ln, int pos)
4075: {
4076: char *name, *cp;
1.212 schwarze 4077: size_t namesz;
1.121 schwarze 4078:
4079: name = *cpp;
1.362 schwarze 4080: if (*name == '\0')
1.277 schwarze 4081: return 0;
1.121 schwarze 4082:
1.362 schwarze 4083: /* Advance cp to the byte after the end of the name. */
4084:
1.212 schwarze 4085: for (cp = name; 1; cp++) {
1.362 schwarze 4086: namesz = cp - name;
1.363 schwarze 4087: if (*cp == '\0')
1.212 schwarze 4088: break;
1.363 schwarze 4089: if (*cp == ' ' || *cp == '\t') {
4090: cp++;
4091: break;
4092: }
1.362 schwarze 4093: if (*cp != '\\')
1.121 schwarze 4094: continue;
1.362 schwarze 4095: if (cp[1] == '{' || cp[1] == '}')
1.215 schwarze 4096: break;
1.362 schwarze 4097: if (*++cp == '\\')
1.121 schwarze 4098: continue;
1.350 schwarze 4099: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.224 schwarze 4100: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 4101: mandoc_escape((const char **)&cp, NULL, NULL);
4102: break;
1.121 schwarze 4103: }
4104:
4105: /* Read past spaces. */
1.362 schwarze 4106:
4107: while (*cp == ' ')
1.121 schwarze 4108: cp++;
4109:
4110: *cpp = cp;
1.277 schwarze 4111: return namesz;
1.121 schwarze 4112: }
4113:
1.106 kristaps 4114: /*
4115: * Store *string into the user-defined string called *name.
4116: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 4117: * append == 0: replace mode
4118: * append == 1: single-line append mode
4119: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 4120: */
1.94 kristaps 4121: static void
1.106 kristaps 4122: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 4123: int append)
1.92 schwarze 4124: {
1.315 schwarze 4125: size_t namesz;
1.164 kristaps 4126:
1.315 schwarze 4127: namesz = strlen(name);
4128: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 4129: string ? strlen(string) : 0, append);
1.315 schwarze 4130: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 4131: }
4132:
4133: static void
1.166 kristaps 4134: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 4135: const char *string, size_t stringsz, int append)
1.164 kristaps 4136: {
1.166 kristaps 4137: struct roffkv *n;
1.164 kristaps 4138: char *c;
4139: int i;
4140: size_t oldch, newch;
1.92 schwarze 4141:
1.106 kristaps 4142: /* Search for an existing string with the same name. */
1.164 kristaps 4143: n = *r;
4144:
1.211 schwarze 4145: while (n && (namesz != n->key.sz ||
4146: strncmp(n->key.p, name, namesz)))
1.92 schwarze 4147: n = n->next;
1.94 kristaps 4148:
4149: if (NULL == n) {
1.106 kristaps 4150: /* Create a new string table entry. */
1.166 kristaps 4151: n = mandoc_malloc(sizeof(struct roffkv));
4152: n->key.p = mandoc_strndup(name, namesz);
4153: n->key.sz = namesz;
4154: n->val.p = NULL;
4155: n->val.sz = 0;
1.164 kristaps 4156: n->next = *r;
4157: *r = n;
1.193 schwarze 4158: } else if (0 == append) {
1.166 kristaps 4159: free(n->val.p);
4160: n->val.p = NULL;
4161: n->val.sz = 0;
1.106 kristaps 4162: }
4163:
4164: if (NULL == string)
4165: return;
4166:
4167: /*
4168: * One additional byte for the '\n' in multiline mode,
4169: * and one for the terminating '\0'.
4170: */
1.193 schwarze 4171: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 4172:
1.166 kristaps 4173: if (NULL == n->val.p) {
4174: n->val.p = mandoc_malloc(newch);
4175: *n->val.p = '\0';
1.106 kristaps 4176: oldch = 0;
4177: } else {
1.166 kristaps 4178: oldch = n->val.sz;
4179: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 4180: }
4181:
4182: /* Skip existing content in the destination buffer. */
1.166 kristaps 4183: c = n->val.p + (int)oldch;
1.106 kristaps 4184:
4185: /* Append new content to the destination buffer. */
1.164 kristaps 4186: i = 0;
4187: while (i < (int)stringsz) {
1.106 kristaps 4188: /*
4189: * Rudimentary roff copy mode:
4190: * Handle escaped backslashes.
4191: */
1.164 kristaps 4192: if ('\\' == string[i] && '\\' == string[i + 1])
4193: i++;
4194: *c++ = string[i++];
1.106 kristaps 4195: }
1.94 kristaps 4196:
1.106 kristaps 4197: /* Append terminating bytes. */
1.193 schwarze 4198: if (1 < append)
1.106 kristaps 4199: *c++ = '\n';
1.163 kristaps 4200:
1.106 kristaps 4201: *c = '\0';
1.166 kristaps 4202: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 4203: }
4204:
1.94 kristaps 4205: static const char *
1.325 schwarze 4206: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 4207: int *deftype)
1.92 schwarze 4208: {
1.315 schwarze 4209: const struct roffkv *n;
1.325 schwarze 4210: int found, i;
1.315 schwarze 4211: enum roff_tok tok;
4212:
1.325 schwarze 4213: found = 0;
4214: for (n = r->strtab; n != NULL; n = n->next) {
4215: if (strncmp(name, n->key.p, len) != 0 ||
4216: n->key.p[len] != '\0' || n->val.p == NULL)
4217: continue;
4218: if (*deftype & ROFFDEF_USER) {
4219: *deftype = ROFFDEF_USER;
4220: return n->val.p;
4221: } else {
4222: found = 1;
4223: break;
4224: }
4225: }
4226: for (n = r->rentab; n != NULL; n = n->next) {
4227: if (strncmp(name, n->key.p, len) != 0 ||
4228: n->key.p[len] != '\0' || n->val.p == NULL)
4229: continue;
4230: if (*deftype & ROFFDEF_REN) {
4231: *deftype = ROFFDEF_REN;
4232: return n->val.p;
4233: } else {
4234: found = 1;
4235: break;
1.315 schwarze 4236: }
4237: }
1.325 schwarze 4238: for (i = 0; i < PREDEFS_MAX; i++) {
4239: if (strncmp(name, predefs[i].name, len) != 0 ||
4240: predefs[i].name[len] != '\0')
4241: continue;
4242: if (*deftype & ROFFDEF_PRE) {
4243: *deftype = ROFFDEF_PRE;
4244: return predefs[i].str;
4245: } else {
4246: found = 1;
4247: break;
1.315 schwarze 4248: }
4249: }
1.356 schwarze 4250: if (r->man->meta.macroset != MACROSET_MAN) {
1.325 schwarze 4251: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4252: if (strncmp(name, roff_name[tok], len) != 0 ||
4253: roff_name[tok][len] != '\0')
4254: continue;
4255: if (*deftype & ROFFDEF_STD) {
4256: *deftype = ROFFDEF_STD;
4257: return NULL;
4258: } else {
4259: found = 1;
4260: break;
1.315 schwarze 4261: }
4262: }
4263: }
1.356 schwarze 4264: if (r->man->meta.macroset != MACROSET_MDOC) {
1.325 schwarze 4265: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4266: if (strncmp(name, roff_name[tok], len) != 0 ||
4267: roff_name[tok][len] != '\0')
4268: continue;
4269: if (*deftype & ROFFDEF_STD) {
4270: *deftype = ROFFDEF_STD;
4271: return NULL;
4272: } else {
4273: found = 1;
4274: break;
1.315 schwarze 4275: }
4276: }
1.325 schwarze 4277: }
4278:
4279: if (found == 0 && *deftype != ROFFDEF_ANY) {
4280: if (*deftype & ROFFDEF_REN) {
4281: /*
4282: * This might still be a request,
4283: * so do not treat it as undefined yet.
4284: */
4285: *deftype = ROFFDEF_UNDEF;
4286: return NULL;
1.315 schwarze 4287: }
1.325 schwarze 4288:
4289: /* Using an undefined string defines it to be empty. */
4290:
4291: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4292: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 4293: }
1.325 schwarze 4294:
1.315 schwarze 4295: *deftype = 0;
1.277 schwarze 4296: return NULL;
1.92 schwarze 4297: }
4298:
1.94 kristaps 4299: static void
1.167 kristaps 4300: roff_freestr(struct roffkv *r)
1.92 schwarze 4301: {
1.166 kristaps 4302: struct roffkv *n, *nn;
1.92 schwarze 4303:
1.167 kristaps 4304: for (n = r; n; n = nn) {
1.166 kristaps 4305: free(n->key.p);
4306: free(n->val.p);
1.92 schwarze 4307: nn = n->next;
4308: free(n);
4309: }
1.114 kristaps 4310: }
1.266 schwarze 4311:
4312: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 4313:
4314: /*
4315: * Duplicate an input string, making the appropriate character
4316: * conversations (as stipulated by `tr') along the way.
4317: * Returns a heap-allocated string with all the replacements made.
4318: */
4319: char *
4320: roff_strdup(const struct roff *r, const char *p)
4321: {
1.166 kristaps 4322: const struct roffkv *cp;
1.164 kristaps 4323: char *res;
4324: const char *pp;
4325: size_t ssz, sz;
4326: enum mandoc_esc esc;
4327:
1.167 kristaps 4328: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 4329: return mandoc_strdup(p);
1.164 kristaps 4330: else if ('\0' == *p)
1.277 schwarze 4331: return mandoc_strdup("");
1.164 kristaps 4332:
4333: /*
4334: * Step through each character looking for term matches
4335: * (remember that a `tr' can be invoked with an escape, which is
4336: * a glyph but the escape is multi-character).
4337: * We only do this if the character hash has been initialised
4338: * and the string is >0 length.
4339: */
4340:
4341: res = NULL;
4342: ssz = 0;
4343:
4344: while ('\0' != *p) {
1.289 schwarze 4345: assert((unsigned int)*p < 128);
4346: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 4347: sz = r->xtab[(int)*p].sz;
4348: res = mandoc_realloc(res, ssz + sz + 1);
4349: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4350: ssz += sz;
4351: p++;
4352: continue;
4353: } else if ('\\' != *p) {
4354: res = mandoc_realloc(res, ssz + 2);
4355: res[ssz++] = *p++;
4356: continue;
4357: }
4358:
1.164 kristaps 4359: /* Search for term matches. */
1.167 kristaps 4360: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4361: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4362: break;
4363:
4364: if (NULL != cp) {
4365: /*
4366: * A match has been found.
4367: * Append the match to the array and move
4368: * forward by its keysize.
4369: */
1.207 schwarze 4370: res = mandoc_realloc(res,
4371: ssz + cp->val.sz + 1);
1.166 kristaps 4372: memcpy(res + ssz, cp->val.p, cp->val.sz);
4373: ssz += cp->val.sz;
4374: p += (int)cp->key.sz;
1.164 kristaps 4375: continue;
4376: }
4377:
1.167 kristaps 4378: /*
4379: * Handle escapes carefully: we need to copy
4380: * over just the escape itself, or else we might
4381: * do replacements within the escape itself.
4382: * Make sure to pass along the bogus string.
4383: */
4384: pp = p++;
4385: esc = mandoc_escape(&p, NULL, NULL);
4386: if (ESCAPE_ERROR == esc) {
4387: sz = strlen(pp);
1.164 kristaps 4388: res = mandoc_realloc(res, ssz + sz + 1);
4389: memcpy(res + ssz, pp, sz);
1.167 kristaps 4390: break;
1.164 kristaps 4391: }
1.207 schwarze 4392: /*
4393: * We bail out on bad escapes.
1.167 kristaps 4394: * No need to warn: we already did so when
1.355 schwarze 4395: * roff_expand() was called.
1.167 kristaps 4396: */
4397: sz = (int)(p - pp);
4398: res = mandoc_realloc(res, ssz + sz + 1);
4399: memcpy(res + ssz, pp, sz);
4400: ssz += sz;
1.164 kristaps 4401: }
4402:
4403: res[(int)ssz] = '\0';
1.277 schwarze 4404: return res;
1.227 schwarze 4405: }
4406:
4407: int
4408: roff_getformat(const struct roff *r)
4409: {
4410:
1.277 schwarze 4411: return r->format;
1.174 kristaps 4412: }
4413:
4414: /*
1.207 schwarze 4415: * Find out whether a line is a macro line or not.
1.174 kristaps 4416: * If it is, adjust the current position and return one; if it isn't,
4417: * return zero and don't change the current position.
4418: * If the control character has been set with `.cc', then let that grain
4419: * precedence.
4420: * This is slighly contrary to groff, where using the non-breaking
4421: * control character when `cc' has been invoked will cause the
4422: * non-breaking macro contents to be printed verbatim.
4423: */
4424: int
4425: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4426: {
4427: int pos;
4428:
4429: pos = *ppos;
4430:
1.303 schwarze 4431: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4432: pos++;
1.303 schwarze 4433: else if (r->control != '\0')
1.277 schwarze 4434: return 0;
1.174 kristaps 4435: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4436: pos += 2;
4437: else if ('.' == cp[pos] || '\'' == cp[pos])
4438: pos++;
4439: else
1.277 schwarze 4440: return 0;
1.174 kristaps 4441:
4442: while (' ' == cp[pos] || '\t' == cp[pos])
4443: pos++;
4444:
4445: *ppos = pos;
1.277 schwarze 4446: return 1;
1.74 kristaps 4447: }
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