Annotation of mandoc/roff.c, Revision 1.390
1.390 ! schwarze 1: /* $Id: roff.c,v 1.389 2022/05/30 23:03:47 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);
1.388 schwarze 210: static void roff_expand_patch(struct buf *, int,
211: const char *, int);
1.155 kristaps 212: static void roff_free1(struct roff *);
1.180 schwarze 213: static void roff_freereg(struct roffreg *);
1.167 kristaps 214: static void roff_freestr(struct roffkv *);
1.212 schwarze 215: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 216: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 217: static int roff_getop(const char *, int *, char *);
1.327 schwarze 218: static int roff_getregn(struct roff *,
219: const char *, size_t, char);
1.273 schwarze 220: static int roff_getregro(const struct roff *,
221: const char *name);
1.325 schwarze 222: static const char *roff_getstrn(struct roff *,
1.315 schwarze 223: const char *, size_t, int *);
1.271 schwarze 224: static int roff_hasregn(const struct roff *,
225: const char *, size_t);
1.340 schwarze 226: static int roff_insec(ROFF_ARGS);
227: static int roff_it(ROFF_ARGS);
228: static int roff_line_ignore(ROFF_ARGS);
1.265 schwarze 229: static void roff_man_alloc1(struct roff_man *);
230: static void roff_man_free1(struct roff_man *);
1.340 schwarze 231: static int roff_manyarg(ROFF_ARGS);
1.384 schwarze 232: static int roff_mc(ROFF_ARGS);
1.358 schwarze 233: static int roff_noarg(ROFF_ARGS);
1.340 schwarze 234: static int roff_nop(ROFF_ARGS);
235: static int roff_nr(ROFF_ARGS);
236: static int roff_onearg(ROFF_ARGS);
1.294 schwarze 237: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 238: int, int);
1.387 schwarze 239: static int roff_parse_comment(struct roff *, struct buf *,
240: int, int, char);
1.340 schwarze 241: static int roff_parsetext(struct roff *, struct buf *,
1.305 schwarze 242: int, int *);
1.340 schwarze 243: static int roff_renamed(ROFF_ARGS);
1.386 schwarze 244: static int roff_req_or_macro(ROFF_ARGS);
1.340 schwarze 245: static int roff_return(ROFF_ARGS);
246: static int roff_rm(ROFF_ARGS);
247: static int roff_rn(ROFF_ARGS);
248: static int roff_rr(ROFF_ARGS);
1.326 schwarze 249: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 250: size_t, int, char, int);
1.94 kristaps 251: static void roff_setstr(struct roff *,
1.106 kristaps 252: const char *, const char *, int);
1.207 schwarze 253: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 254: size_t, const char *, size_t, int);
1.340 schwarze 255: static int roff_shift(ROFF_ARGS);
256: static int roff_so(ROFF_ARGS);
257: static int roff_tr(ROFF_ARGS);
258: static int roff_Dd(ROFF_ARGS);
259: static int roff_TE(ROFF_ARGS);
260: static int roff_TS(ROFF_ARGS);
261: static int roff_EQ(ROFF_ARGS);
262: static int roff_EN(ROFF_ARGS);
263: static int roff_T_(ROFF_ARGS);
264: static int roff_unsupp(ROFF_ARGS);
265: static int roff_userdef(ROFF_ARGS);
1.67 kristaps 266:
1.266 schwarze 267: /* --- constant data ------------------------------------------------------ */
268:
1.261 schwarze 269: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
270: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
271:
1.294 schwarze 272: const char *__roff_name[MAN_MAX + 1] = {
1.358 schwarze 273: "br", "ce", "fi", "ft",
274: "ll", "mc", "nf",
275: "po", "rj", "sp",
1.312 schwarze 276: "ta", "ti", NULL,
1.294 schwarze 277: "ab", "ad", "af", "aln",
278: "als", "am", "am1", "ami",
279: "ami1", "as", "as1", "asciify",
280: "backtrace", "bd", "bleedat", "blm",
281: "box", "boxa", "bp", "BP",
282: "break", "breakchar", "brnl", "brp",
1.305 schwarze 283: "brpnl", "c2", "cc",
1.294 schwarze 284: "cf", "cflags", "ch", "char",
285: "chop", "class", "close", "CL",
286: "color", "composite", "continue", "cp",
287: "cropat", "cs", "cu", "da",
288: "dch", "Dd", "de", "de1",
289: "defcolor", "dei", "dei1", "device",
290: "devicem", "di", "do", "ds",
291: "ds1", "dwh", "dt", "ec",
292: "ecr", "ecs", "el", "em",
293: "EN", "eo", "EP", "EQ",
294: "errprint", "ev", "evc", "ex",
295: "fallback", "fam", "fc", "fchar",
296: "fcolor", "fdeferlig", "feature", "fkern",
297: "fl", "flig", "fp", "fps",
298: "fschar", "fspacewidth", "fspecial", "ftr",
299: "fzoom", "gcolor", "hc", "hcode",
300: "hidechar", "hla", "hlm", "hpf",
301: "hpfa", "hpfcode", "hw", "hy",
302: "hylang", "hylen", "hym", "hypp",
303: "hys", "ie", "if", "ig",
304: "index", "it", "itc", "IX",
305: "kern", "kernafter", "kernbefore", "kernpair",
306: "lc", "lc_ctype", "lds", "length",
307: "letadj", "lf", "lg", "lhang",
308: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 309: "ls", "lsm", "lt",
1.294 schwarze 310: "mediasize", "minss", "mk", "mso",
311: "na", "ne", "nh", "nhychar",
312: "nm", "nn", "nop", "nr",
313: "nrf", "nroff", "ns", "nx",
314: "open", "opena", "os", "output",
315: "padj", "papersize", "pc", "pev",
316: "pi", "PI", "pl", "pm",
1.312 schwarze 317: "pn", "pnr", "ps",
1.294 schwarze 318: "psbb", "pshape", "pso", "ptr",
319: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 320: "return", "rfschar", "rhang",
1.294 schwarze 321: "rm", "rn", "rnn", "rr",
322: "rs", "rt", "schar", "sentchar",
323: "shc", "shift", "sizes", "so",
324: "spacewidth", "special", "spreadwarn", "ss",
325: "sty", "substring", "sv", "sy",
1.300 schwarze 326: "T&", "tc", "TE",
1.301 schwarze 327: "TH", "tkf", "tl",
1.294 schwarze 328: "tm", "tm1", "tmc", "tr",
329: "track", "transchar", "trf", "trimat",
330: "trin", "trnt", "troff", "TS",
331: "uf", "ul", "unformat", "unwatch",
332: "unwatchn", "vpt", "vs", "warn",
333: "warnscale", "watch", "watchlength", "watchn",
334: "wh", "while", "write", "writec",
335: "writem", "xflag", ".", NULL,
1.306 schwarze 336: NULL, "text",
1.294 schwarze 337: "Dd", "Dt", "Os", "Sh",
338: "Ss", "Pp", "D1", "Dl",
339: "Bd", "Ed", "Bl", "El",
340: "It", "Ad", "An", "Ap",
341: "Ar", "Cd", "Cm", "Dv",
342: "Er", "Ev", "Ex", "Fa",
343: "Fd", "Fl", "Fn", "Ft",
344: "Ic", "In", "Li", "Nd",
345: "Nm", "Op", "Ot", "Pa",
346: "Rv", "St", "Va", "Vt",
347: "Xr", "%A", "%B", "%D",
348: "%I", "%J", "%N", "%O",
349: "%P", "%R", "%T", "%V",
350: "Ac", "Ao", "Aq", "At",
351: "Bc", "Bf", "Bo", "Bq",
352: "Bsx", "Bx", "Db", "Dc",
353: "Do", "Dq", "Ec", "Ef",
354: "Em", "Eo", "Fx", "Ms",
355: "No", "Ns", "Nx", "Ox",
356: "Pc", "Pf", "Po", "Pq",
357: "Qc", "Ql", "Qo", "Qq",
358: "Re", "Rs", "Sc", "So",
359: "Sq", "Sm", "Sx", "Sy",
360: "Tn", "Ux", "Xc", "Xo",
361: "Fo", "Fc", "Oo", "Oc",
362: "Bk", "Ek", "Bt", "Hf",
363: "Fr", "Ud", "Lb", "Lp",
364: "Lk", "Mt", "Brq", "Bro",
365: "Brc", "%C", "Es", "En",
1.299 schwarze 366: "Dx", "%Q", "%U", "Ta",
1.369 schwarze 367: "Tg", NULL,
1.294 schwarze 368: "TH", "SH", "SS", "TP",
1.332 schwarze 369: "TQ",
1.294 schwarze 370: "LP", "PP", "P", "IP",
371: "HP", "SM", "SB", "BI",
372: "IB", "BR", "RB", "R",
373: "B", "I", "IR", "RI",
374: "RE", "RS", "DT", "UC",
1.297 schwarze 375: "PD", "AT", "in",
1.333 schwarze 376: "SY", "YS", "OP",
377: "EX", "EE", "UR",
1.317 schwarze 378: "UE", "MT", "ME", NULL
1.294 schwarze 379: };
380: const char *const *roff_name = __roff_name;
381:
382: static struct roffmac roffs[TOKEN_NONE] = {
1.358 schwarze 383: { roff_noarg, NULL, NULL, 0 }, /* br */
1.305 schwarze 384: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.358 schwarze 385: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.297 schwarze 386: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 387: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.384 schwarze 388: { roff_mc, NULL, NULL, 0 }, /* mc */
1.358 schwarze 389: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.312 schwarze 390: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 391: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 392: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 393: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 394: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 395: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 396: { roff_unsupp, NULL, NULL, 0 }, /* ab */
397: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
398: { roff_line_ignore, NULL, NULL, 0 }, /* af */
399: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 400: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 401: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
402: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
403: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
404: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
405: { roff_ds, NULL, NULL, 0 }, /* as */
406: { roff_ds, NULL, NULL, 0 }, /* as1 */
407: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
408: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
409: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
410: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
411: { roff_unsupp, NULL, NULL, 0 }, /* blm */
412: { roff_unsupp, NULL, NULL, 0 }, /* box */
413: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
414: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
415: { roff_unsupp, NULL, NULL, 0 }, /* BP */
1.364 schwarze 416: { roff_break, NULL, NULL, 0 }, /* break */
1.295 schwarze 417: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
418: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.358 schwarze 419: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.295 schwarze 420: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
421: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
422: { roff_cc, NULL, NULL, 0 }, /* cc */
423: { roff_insec, NULL, NULL, 0 }, /* cf */
424: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
425: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.341 schwarze 426: { roff_char, NULL, NULL, 0 }, /* char */
1.295 schwarze 427: { roff_unsupp, NULL, NULL, 0 }, /* chop */
428: { roff_line_ignore, NULL, NULL, 0 }, /* class */
429: { roff_insec, NULL, NULL, 0 }, /* close */
430: { roff_unsupp, NULL, NULL, 0 }, /* CL */
431: { roff_line_ignore, NULL, NULL, 0 }, /* color */
432: { roff_unsupp, NULL, NULL, 0 }, /* composite */
433: { roff_unsupp, NULL, NULL, 0 }, /* continue */
434: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
435: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
436: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
437: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
438: { roff_unsupp, NULL, NULL, 0 }, /* da */
439: { roff_unsupp, NULL, NULL, 0 }, /* dch */
440: { roff_Dd, NULL, NULL, 0 }, /* Dd */
441: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
442: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
443: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
444: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
445: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
446: { roff_unsupp, NULL, NULL, 0 }, /* device */
447: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
448: { roff_unsupp, NULL, NULL, 0 }, /* di */
449: { roff_unsupp, NULL, NULL, 0 }, /* do */
450: { roff_ds, NULL, NULL, 0 }, /* ds */
451: { roff_ds, NULL, NULL, 0 }, /* ds1 */
452: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
453: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 454: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 455: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
456: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
457: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
458: { roff_unsupp, NULL, NULL, 0 }, /* em */
459: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 460: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 461: { roff_unsupp, NULL, NULL, 0 }, /* EP */
462: { roff_EQ, NULL, NULL, 0 }, /* EQ */
463: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
464: { roff_unsupp, NULL, NULL, 0 }, /* ev */
465: { roff_unsupp, NULL, NULL, 0 }, /* evc */
466: { roff_unsupp, NULL, NULL, 0 }, /* ex */
467: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
468: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
469: { roff_unsupp, NULL, NULL, 0 }, /* fc */
470: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
471: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
472: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
473: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
474: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
475: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
476: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
477: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
478: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
479: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
480: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
481: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
482: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
483: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
484: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
485: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
486: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
487: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
488: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
489: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
490: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
491: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
492: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
493: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
494: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
495: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
496: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
497: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
498: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
499: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
500: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
501: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
502: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
503: { roff_unsupp, NULL, NULL, 0 }, /* index */
504: { roff_it, NULL, NULL, 0 }, /* it */
505: { roff_unsupp, NULL, NULL, 0 }, /* itc */
506: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
507: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
508: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
509: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
510: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
511: { roff_unsupp, NULL, NULL, 0 }, /* lc */
512: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
513: { roff_unsupp, NULL, NULL, 0 }, /* lds */
514: { roff_unsupp, NULL, NULL, 0 }, /* length */
515: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
516: { roff_insec, NULL, NULL, 0 }, /* lf */
517: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
518: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
519: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
520: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
521: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
522: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
523: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
524: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
525: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
526: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
527: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
528: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
529: { roff_insec, NULL, NULL, 0 }, /* mso */
530: { roff_line_ignore, NULL, NULL, 0 }, /* na */
531: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
532: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
533: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
534: { roff_unsupp, NULL, NULL, 0 }, /* nm */
535: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 536: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 537: { roff_nr, NULL, NULL, 0 }, /* nr */
538: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
539: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
540: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
541: { roff_insec, NULL, NULL, 0 }, /* nx */
542: { roff_insec, NULL, NULL, 0 }, /* open */
543: { roff_insec, NULL, NULL, 0 }, /* opena */
544: { roff_line_ignore, NULL, NULL, 0 }, /* os */
545: { roff_unsupp, NULL, NULL, 0 }, /* output */
546: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
547: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
548: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
549: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
550: { roff_insec, NULL, NULL, 0 }, /* pi */
551: { roff_unsupp, NULL, NULL, 0 }, /* PI */
552: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
553: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
554: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
555: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
556: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
557: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
558: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
559: { roff_insec, NULL, NULL, 0 }, /* pso */
560: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
561: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
562: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
563: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
564: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 schwarze 565: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 566: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
567: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
568: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 569: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 570: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
571: { roff_rr, NULL, NULL, 0 }, /* rr */
572: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
573: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
574: { roff_unsupp, NULL, NULL, 0 }, /* schar */
575: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
576: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 schwarze 577: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 578: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
579: { roff_so, NULL, NULL, 0 }, /* so */
580: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
581: { roff_line_ignore, NULL, NULL, 0 }, /* special */
582: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
583: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
584: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
585: { roff_unsupp, NULL, NULL, 0 }, /* substring */
586: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
587: { roff_insec, NULL, NULL, 0 }, /* sy */
588: { roff_T_, NULL, NULL, 0 }, /* T& */
589: { roff_unsupp, NULL, NULL, 0 }, /* tc */
590: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 591: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 592: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
593: { roff_unsupp, NULL, NULL, 0 }, /* tl */
594: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
595: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
596: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
597: { roff_tr, NULL, NULL, 0 }, /* tr */
598: { roff_line_ignore, NULL, NULL, 0 }, /* track */
599: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
600: { roff_insec, NULL, NULL, 0 }, /* trf */
601: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
602: { roff_unsupp, NULL, NULL, 0 }, /* trin */
603: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
604: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
605: { roff_TS, NULL, NULL, 0 }, /* TS */
606: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
607: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
608: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
609: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
610: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
611: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
612: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
613: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
614: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
615: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
616: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
617: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
618: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.340 schwarze 619: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.295 schwarze 620: { roff_insec, NULL, NULL, 0 }, /* write */
621: { roff_insec, NULL, NULL, 0 }, /* writec */
622: { roff_insec, NULL, NULL, 0 }, /* writem */
623: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
624: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 625: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 626: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 627: };
628:
1.141 kristaps 629: /* Array of injected predefined strings. */
630: #define PREDEFS_MAX 38
631: static const struct predef predefs[PREDEFS_MAX] = {
632: #include "predefs.in"
633: };
634:
1.305 schwarze 635: static int roffce_lines; /* number of input lines to center */
636: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 637: static int roffit_lines; /* number of lines to delay */
638: static char *roffit_macro; /* nil-terminated macro line */
639:
1.207 schwarze 640:
1.266 schwarze 641: /* --- request table ------------------------------------------------------ */
642:
1.295 schwarze 643: struct ohash *
644: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 645: {
1.295 schwarze 646: struct ohash *htab;
647: struct roffreq *req;
648: enum roff_tok tok;
649: size_t sz;
650: unsigned int slot;
1.85 kristaps 651:
1.295 schwarze 652: htab = mandoc_malloc(sizeof(*htab));
653: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 654:
1.295 schwarze 655: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 656: if (roff_name[tok] == NULL)
657: continue;
1.295 schwarze 658: sz = strlen(roff_name[tok]);
659: req = mandoc_malloc(sizeof(*req) + sz + 1);
660: req->tok = tok;
661: memcpy(req->name, roff_name[tok], sz + 1);
662: slot = ohash_qlookup(htab, req->name);
663: ohash_insert(htab, slot, req);
1.85 kristaps 664: }
1.295 schwarze 665: return htab;
1.85 kristaps 666: }
667:
1.295 schwarze 668: void
669: roffhash_free(struct ohash *htab)
1.67 kristaps 670: {
1.295 schwarze 671: struct roffreq *req;
672: unsigned int slot;
1.67 kristaps 673:
1.295 schwarze 674: if (htab == NULL)
675: return;
676: for (req = ohash_first(htab, &slot); req != NULL;
677: req = ohash_next(htab, &slot))
678: free(req);
679: ohash_delete(htab);
680: free(htab);
681: }
682:
683: enum roff_tok
684: roffhash_find(struct ohash *htab, const char *name, size_t sz)
685: {
686: struct roffreq *req;
687: const char *end;
688:
689: if (sz) {
690: end = name + sz;
691: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
692: } else
693: req = ohash_find(htab, ohash_qlookup(htab, name));
694: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 695: }
696:
1.266 schwarze 697: /* --- stack of request blocks -------------------------------------------- */
698:
1.67 kristaps 699: /*
700: * Pop the current node off of the stack of roff instructions currently
1.364 schwarze 701: * pending. Return 1 if it is a loop or 0 otherwise.
1.67 kristaps 702: */
1.340 schwarze 703: static int
1.67 kristaps 704: roffnode_pop(struct roff *r)
705: {
706: struct roffnode *p;
1.340 schwarze 707: int inloop;
1.67 kristaps 708:
1.207 schwarze 709: p = r->last;
1.340 schwarze 710: inloop = p->tok == ROFF_while;
711: r->last = p->parent;
1.106 kristaps 712: free(p->name);
713: free(p->end);
1.67 kristaps 714: free(p);
1.340 schwarze 715: return inloop;
1.67 kristaps 716: }
717:
718: /*
719: * Push a roff node onto the instruction stack. This must later be
720: * removed with roffnode_pop().
721: */
1.98 schwarze 722: static void
1.294 schwarze 723: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 724: int line, int col)
1.67 kristaps 725: {
726: struct roffnode *p;
727:
1.98 schwarze 728: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 729: p->tok = tok;
1.106 kristaps 730: if (name)
731: p->name = mandoc_strdup(name);
1.67 kristaps 732: p->parent = r->last;
733: p->line = line;
734: p->col = col;
1.198 schwarze 735: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 736:
737: r->last = p;
738: }
739:
1.266 schwarze 740: /* --- roff parser state data management ---------------------------------- */
741:
1.67 kristaps 742: static void
743: roff_free1(struct roff *r)
744: {
1.167 kristaps 745: int i;
1.67 kristaps 746:
1.346 schwarze 747: tbl_free(r->first_tbl);
1.113 kristaps 748: r->first_tbl = r->last_tbl = r->tbl = NULL;
749:
1.347 schwarze 750: eqn_free(r->last_eqn);
1.319 schwarze 751: r->last_eqn = r->eqn = NULL;
1.125 kristaps 752:
1.339 schwarze 753: while (r->mstackpos >= 0)
754: roff_userret(r);
755:
1.67 kristaps 756: while (r->last)
757: roffnode_pop(r);
1.109 kristaps 758:
1.223 schwarze 759: free (r->rstack);
760: r->rstack = NULL;
761: r->rstacksz = 0;
762: r->rstackpos = -1;
763:
764: roff_freereg(r->regtab);
765: r->regtab = NULL;
766:
1.167 kristaps 767: roff_freestr(r->strtab);
1.306 schwarze 768: roff_freestr(r->rentab);
1.167 kristaps 769: roff_freestr(r->xmbtab);
1.306 schwarze 770: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 771:
772: if (r->xtab)
773: for (i = 0; i < 128; i++)
774: free(r->xtab[i].p);
775: free(r->xtab);
776: r->xtab = NULL;
1.67 kristaps 777: }
778:
779: void
780: roff_reset(struct roff *r)
781: {
782: roff_free1(r);
1.367 schwarze 783: r->options |= MPARSE_COMMENT;
1.227 schwarze 784: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 785: r->control = '\0';
786: r->escape = '\\';
1.307 schwarze 787: roffce_lines = 0;
788: roffce_node = NULL;
789: roffit_lines = 0;
790: roffit_macro = NULL;
1.67 kristaps 791: }
792:
793: void
794: roff_free(struct roff *r)
795: {
1.366 schwarze 796: int i;
1.339 schwarze 797:
1.67 kristaps 798: roff_free1(r);
1.339 schwarze 799: for (i = 0; i < r->mstacksz; i++)
800: free(r->mstack[i].argv);
801: free(r->mstack);
1.295 schwarze 802: roffhash_free(r->reqtab);
1.67 kristaps 803: free(r);
804: }
805:
806: struct roff *
1.351 schwarze 807: roff_alloc(int options)
1.67 kristaps 808: {
809: struct roff *r;
810:
1.98 schwarze 811: r = mandoc_calloc(1, sizeof(struct roff));
1.328 schwarze 812: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.367 schwarze 813: r->options = options | MPARSE_COMMENT;
1.227 schwarze 814: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 815: r->mstackpos = -1;
1.82 kristaps 816: r->rstackpos = -1;
1.303 schwarze 817: r->escape = '\\';
1.277 schwarze 818: return r;
1.265 schwarze 819: }
820:
1.266 schwarze 821: /* --- syntax tree state data management ---------------------------------- */
822:
1.265 schwarze 823: static void
824: roff_man_free1(struct roff_man *man)
825: {
1.356 schwarze 826: if (man->meta.first != NULL)
827: roff_node_delete(man, man->meta.first);
1.265 schwarze 828: free(man->meta.msec);
829: free(man->meta.vol);
830: free(man->meta.os);
831: free(man->meta.arch);
832: free(man->meta.title);
833: free(man->meta.name);
834: free(man->meta.date);
1.356 schwarze 835: free(man->meta.sodest);
1.265 schwarze 836: }
837:
1.357 schwarze 838: void
839: roff_state_reset(struct roff_man *man)
840: {
841: man->last = man->meta.first;
842: man->last_es = NULL;
843: man->flags = 0;
844: man->lastsec = man->lastnamed = SEC_NONE;
845: man->next = ROFF_NEXT_CHILD;
846: roff_setreg(man->roff, "nS", 0, '=');
847: }
848:
1.265 schwarze 849: static void
850: roff_man_alloc1(struct roff_man *man)
851: {
852: memset(&man->meta, 0, sizeof(man->meta));
1.356 schwarze 853: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
854: man->meta.first->type = ROFFT_ROOT;
855: man->meta.macroset = MACROSET_NONE;
1.357 schwarze 856: roff_state_reset(man);
1.265 schwarze 857: }
858:
859: void
860: roff_man_reset(struct roff_man *man)
861: {
862: roff_man_free1(man);
863: roff_man_alloc1(man);
864: }
865:
866: void
867: roff_man_free(struct roff_man *man)
868: {
869: roff_man_free1(man);
1.380 schwarze 870: free(man->os_r);
1.265 schwarze 871: free(man);
872: }
873:
874: struct roff_man *
1.351 schwarze 875: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.265 schwarze 876: {
877: struct roff_man *man;
878:
879: man = mandoc_calloc(1, sizeof(*man));
880: man->roff = roff;
1.316 schwarze 881: man->os_s = os_s;
1.265 schwarze 882: man->quick = quick;
883: roff_man_alloc1(man);
1.296 schwarze 884: roff->man = man;
1.277 schwarze 885: return man;
1.67 kristaps 886: }
887:
1.266 schwarze 888: /* --- syntax tree handling ----------------------------------------------- */
889:
890: struct roff_node *
891: roff_node_alloc(struct roff_man *man, int line, int pos,
892: enum roff_type type, int tok)
893: {
894: struct roff_node *n;
895:
896: n = mandoc_calloc(1, sizeof(*n));
897: n->line = line;
898: n->pos = pos;
899: n->tok = tok;
900: n->type = type;
901: n->sec = man->lastsec;
902:
903: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 904: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 905: else
1.285 schwarze 906: n->flags &= ~NODE_SYNPRETTY;
1.360 schwarze 907: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.359 schwarze 908: n->flags |= NODE_NOFILL;
909: else
910: n->flags &= ~NODE_NOFILL;
1.266 schwarze 911: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 912: n->flags |= NODE_LINE;
1.266 schwarze 913: man->flags &= ~MDOC_NEWLINE;
914:
1.277 schwarze 915: return n;
1.266 schwarze 916: }
917:
918: void
919: roff_node_append(struct roff_man *man, struct roff_node *n)
920: {
921:
922: switch (man->next) {
923: case ROFF_NEXT_SIBLING:
1.281 schwarze 924: if (man->last->next != NULL) {
925: n->next = man->last->next;
926: man->last->next->prev = n;
927: } else
928: man->last->parent->last = n;
1.266 schwarze 929: man->last->next = n;
930: n->prev = man->last;
931: n->parent = man->last->parent;
932: break;
933: case ROFF_NEXT_CHILD:
1.287 schwarze 934: if (man->last->child != NULL) {
935: n->next = man->last->child;
936: man->last->child->prev = n;
937: } else
938: man->last->last = n;
1.266 schwarze 939: man->last->child = n;
940: n->parent = man->last;
941: break;
942: default:
943: abort();
944: }
1.282 schwarze 945: man->last = n;
1.266 schwarze 946:
947: switch (n->type) {
948: case ROFFT_HEAD:
949: n->parent->head = n;
950: break;
951: case ROFFT_BODY:
1.282 schwarze 952: if (n->end != ENDBODY_NOT)
953: return;
1.266 schwarze 954: n->parent->body = n;
955: break;
956: case ROFFT_TAIL:
957: n->parent->tail = n;
958: break;
959: default:
1.282 schwarze 960: return;
1.266 schwarze 961: }
1.282 schwarze 962:
963: /*
964: * Copy over the normalised-data pointer of our parent. Not
965: * everybody has one, but copying a null pointer is fine.
966: */
967:
968: n->norm = n->parent->norm;
969: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 970: }
971:
1.267 schwarze 972: void
973: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
974: {
975: struct roff_node *n;
976:
977: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
978: n->string = roff_strdup(man->roff, word);
979: roff_node_append(man, n);
1.286 schwarze 980: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 981: man->next = ROFF_NEXT_SIBLING;
982: }
983:
984: void
985: roff_word_append(struct roff_man *man, const char *word)
986: {
987: struct roff_node *n;
988: char *addstr, *newstr;
989:
990: n = man->last;
991: addstr = roff_strdup(man->roff, word);
992: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
993: free(addstr);
994: free(n->string);
995: n->string = newstr;
996: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 997: }
998:
999: void
1000: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
1001: {
1002: struct roff_node *n;
1003:
1004: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
1005: roff_node_append(man, n);
1006: man->next = ROFF_NEXT_CHILD;
1007: }
1008:
1009: struct roff_node *
1010: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1011: {
1012: struct roff_node *n;
1013:
1014: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1015: roff_node_append(man, n);
1016: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1017: return n;
1.267 schwarze 1018: }
1019:
1.266 schwarze 1020: struct roff_node *
1021: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1022: {
1023: struct roff_node *n;
1024:
1025: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1026: roff_node_append(man, n);
1027: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1028: return n;
1.266 schwarze 1029: }
1030:
1031: struct roff_node *
1032: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1033: {
1034: struct roff_node *n;
1035:
1036: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1037: roff_node_append(man, n);
1038: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1039: return n;
1.267 schwarze 1040: }
1041:
1.321 schwarze 1042: static void
1.346 schwarze 1043: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1044: {
1045: struct roff_node *n;
1.346 schwarze 1046: struct tbl_span *span;
1.267 schwarze 1047:
1.356 schwarze 1048: if (man->meta.macroset == MACROSET_MAN)
1.302 schwarze 1049: man_breakscope(man, ROFF_TS);
1.321 schwarze 1050: while ((span = tbl_span(tbl)) != NULL) {
1.346 schwarze 1051: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1052: n->span = span;
1053: roff_node_append(man, n);
1054: n->flags |= NODE_VALID | NODE_ENDED;
1055: man->next = ROFF_NEXT_SIBLING;
1056: }
1.266 schwarze 1057: }
1058:
1059: void
1060: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1061: {
1062:
1063: /* Adjust siblings. */
1064:
1065: if (n->prev)
1066: n->prev->next = n->next;
1067: if (n->next)
1068: n->next->prev = n->prev;
1069:
1070: /* Adjust parent. */
1071:
1072: if (n->parent != NULL) {
1073: if (n->parent->child == n)
1074: n->parent->child = n->next;
1075: if (n->parent->last == n)
1076: n->parent->last = n->prev;
1077: }
1078:
1079: /* Adjust parse point. */
1080:
1081: if (man == NULL)
1082: return;
1083: if (man->last == n) {
1084: if (n->prev == NULL) {
1085: man->last = n->parent;
1086: man->next = ROFF_NEXT_CHILD;
1087: } else {
1088: man->last = n->prev;
1089: man->next = ROFF_NEXT_SIBLING;
1090: }
1091: }
1.356 schwarze 1092: if (man->meta.first == n)
1093: man->meta.first = NULL;
1.344 schwarze 1094: }
1095:
1096: void
1097: roff_node_relink(struct roff_man *man, struct roff_node *n)
1098: {
1099: roff_node_unlink(man, n);
1100: n->prev = n->next = NULL;
1101: roff_node_append(man, n);
1.266 schwarze 1102: }
1103:
1104: void
1105: roff_node_free(struct roff_node *n)
1106: {
1107:
1108: if (n->args != NULL)
1109: mdoc_argv_free(n->args);
1110: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1111: free(n->norm);
1.347 schwarze 1112: eqn_box_free(n->eqn);
1.266 schwarze 1113: free(n->string);
1.374 schwarze 1114: free(n->tag);
1.266 schwarze 1115: free(n);
1116: }
1117:
1118: void
1119: roff_node_delete(struct roff_man *man, struct roff_node *n)
1120: {
1121:
1122: while (n->child != NULL)
1123: roff_node_delete(man, n->child);
1124: roff_node_unlink(man, n);
1125: roff_node_free(n);
1.370 schwarze 1126: }
1127:
1128: int
1129: roff_node_transparent(struct roff_node *n)
1130: {
1131: if (n == NULL)
1132: return 0;
1133: if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
1134: return 1;
1.373 schwarze 1135: return roff_tok_transparent(n->tok);
1136: }
1137:
1138: int
1139: roff_tok_transparent(enum roff_tok tok)
1140: {
1141: switch (tok) {
1.370 schwarze 1142: case ROFF_ft:
1143: case ROFF_ll:
1144: case ROFF_mc:
1145: case ROFF_po:
1146: case ROFF_ta:
1147: case MDOC_Db:
1148: case MDOC_Es:
1149: case MDOC_Sm:
1150: case MDOC_Tg:
1151: case MAN_DT:
1152: case MAN_UC:
1153: case MAN_PD:
1154: case MAN_AT:
1155: return 1;
1156: default:
1157: return 0;
1158: }
1159: }
1160:
1161: struct roff_node *
1162: roff_node_child(struct roff_node *n)
1163: {
1164: for (n = n->child; roff_node_transparent(n); n = n->next)
1165: continue;
1166: return n;
1167: }
1168:
1169: struct roff_node *
1170: roff_node_prev(struct roff_node *n)
1171: {
1172: do {
1173: n = n->prev;
1174: } while (roff_node_transparent(n));
1175: return n;
1176: }
1177:
1178: struct roff_node *
1179: roff_node_next(struct roff_node *n)
1180: {
1181: do {
1182: n = n->next;
1183: } while (roff_node_transparent(n));
1184: return n;
1.269 schwarze 1185: }
1186:
1187: void
1188: deroff(char **dest, const struct roff_node *n)
1189: {
1190: char *cp;
1191: size_t sz;
1192:
1.371 schwarze 1193: if (n->string == NULL) {
1.269 schwarze 1194: for (n = n->child; n != NULL; n = n->next)
1195: deroff(dest, n);
1196: return;
1197: }
1198:
1.288 schwarze 1199: /* Skip leading whitespace. */
1.269 schwarze 1200:
1.288 schwarze 1201: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1202: if (cp[0] == '\\' && cp[1] != '\0' &&
1203: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1204: cp++;
1.288 schwarze 1205: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1206: break;
1207: }
1208:
1.289 schwarze 1209: /* Skip trailing backslash. */
1210:
1211: sz = strlen(cp);
1.290 schwarze 1212: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1213: sz--;
1214:
1.269 schwarze 1215: /* Skip trailing whitespace. */
1216:
1.289 schwarze 1217: for (; sz; sz--)
1.269 schwarze 1218: if ( ! isspace((unsigned char)cp[sz-1]))
1219: break;
1220:
1221: /* Skip empty strings. */
1222:
1223: if (sz == 0)
1224: return;
1225:
1226: if (*dest == NULL) {
1227: *dest = mandoc_strndup(cp, sz);
1228: return;
1229: }
1230:
1231: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1232: free(*dest);
1233: *dest = cp;
1.266 schwarze 1234: }
1235:
1236: /* --- main functions of the roff parser ---------------------------------- */
1237:
1.388 schwarze 1238: /*
1239: * Save comments preceding the title macro, for example in order to
1240: * preserve Copyright and license headers in HTML output,
1241: * provide diagnostics about RCS ids and trailing whitespace in comments,
1242: * then discard comments including preceding whitespace.
1243: * This function also handles input line continuation.
1244: */
1.387 schwarze 1245: static int
1.388 schwarze 1246: roff_parse_comment(struct roff *r, struct buf *buf, int ln, int pos, char ec)
1.387 schwarze 1247: {
1248: struct roff_node *n; /* used for header comments */
1249: const char *start; /* start of the string to process */
1250: const char *cp; /* for RCS id parsing */
1251: char *stesc; /* start of an escape sequence ('\\') */
1252: char *ep; /* end of comment string */
1253: int rcsid; /* kind of RCS id seen */
1254:
1255: for (start = stesc = buf->buf + pos;; stesc++) {
1.388 schwarze 1256: /*
1257: * XXX Ugly hack: Remove the newline character that
1258: * mparse_buf_r() appended to mark the end of input
1259: * if it is not preceded by an escape character.
1260: */
1261: if (stesc[0] == '\n') {
1262: assert(stesc[1] == '\0');
1263: stesc[0] = '\0';
1264: }
1265:
1.387 schwarze 1266: /* The line ends without continuation or comment. */
1267: if (stesc[0] == '\0')
1268: return ROFF_CONT;
1269:
1270: /* Unescaped byte: skip it. */
1.388 schwarze 1271: if (stesc[0] != ec)
1.387 schwarze 1272: continue;
1273:
1.388 schwarze 1274: /*
1275: * XXX Ugly hack: Do not attempt to append another line
1276: * if the function mparse_buf_r() appended a newline
1277: * character to indicate the end of input.
1278: */
1279: if (stesc[1] == '\n') {
1280: assert(stesc[2] == '\0');
1281: stesc[0] = '\0';
1282: return ROFF_CONT;
1283: }
1284:
1285: /*
1286: * An escape character at the end of an input line
1287: * requests line continuation.
1288: */
1.387 schwarze 1289: if (stesc[1] == '\0') {
1290: stesc[0] = '\0';
1291: return ROFF_IGN | ROFF_APPEND;
1292: }
1293:
1294: /* Found a comment: process it. */
1295: if (stesc[1] == '"' || stesc[1] == '#')
1296: break;
1297:
1298: /* Escaped escape character: skip them both. */
1.388 schwarze 1299: if (stesc[1] == ec)
1.387 schwarze 1300: stesc++;
1301: }
1302:
1303: /* Look for an RCS id in the comment. */
1304:
1305: rcsid = 0;
1306: if ((cp = strstr(stesc + 2, "$" "OpenBSD")) != NULL) {
1307: rcsid = 1 << MANDOC_OS_OPENBSD;
1308: cp += 8;
1309: } else if ((cp = strstr(stesc + 2, "$" "NetBSD")) != NULL) {
1310: rcsid = 1 << MANDOC_OS_NETBSD;
1311: cp += 7;
1312: }
1313: if (cp != NULL && isalnum((unsigned char)*cp) == 0 &&
1314: strchr(cp, '$') != NULL) {
1315: if (r->man->meta.rcsids & rcsid)
1316: mandoc_msg(MANDOCERR_RCS_REP, ln,
1317: (int)(stesc - buf->buf) + 2, "%s", stesc + 1);
1318: r->man->meta.rcsids |= rcsid;
1319: }
1320:
1321: /* Warn about trailing whitespace at the end of the comment. */
1322:
1323: ep = strchr(stesc + 2, '\0') - 1;
1324: if (*ep == '\n')
1325: *ep-- = '\0';
1326: if (*ep == ' ' || *ep == '\t')
1327: mandoc_msg(MANDOCERR_SPACE_EOL,
1328: ln, (int)(ep - buf->buf), NULL);
1329:
1330: /* Save comments preceding the title macro in the syntax tree. */
1331:
1332: if (r->options & MPARSE_COMMENT) {
1333: while (*ep == ' ' || *ep == '\t')
1334: ep--;
1335: ep[1] = '\0';
1336: n = roff_node_alloc(r->man, ln, stesc + 1 - buf->buf,
1337: ROFFT_COMMENT, TOKEN_NONE);
1338: n->string = mandoc_strdup(stesc + 2);
1339: roff_node_append(r->man, n);
1340: n->flags |= NODE_VALID | NODE_ENDED;
1341: r->man->next = ROFF_NEXT_SIBLING;
1342: }
1343:
1344: /* The comment requests line continuation. */
1345:
1346: if (stesc[1] == '#') {
1347: *stesc = '\0';
1348: return ROFF_IGN | ROFF_APPEND;
1349: }
1350:
1351: /* Discard the comment including preceding whitespace. */
1352:
1353: while (stesc > start && stesc[-1] == ' ' &&
1354: (stesc == start + 1 || stesc[-2] != '\\'))
1355: stesc--;
1356: *stesc = '\0';
1357: return ROFF_CONT;
1358: }
1359:
1.94 kristaps 1360: /*
1.355 schwarze 1361: * In the current line, expand escape sequences that produce parsable
1362: * input text. Also check the syntax of the remaining escape sequences,
1363: * which typically produce output glyphs or change formatter state.
1.154 kristaps 1364: */
1.340 schwarze 1365: static int
1.388 schwarze 1366: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char ec)
1.94 kristaps 1367: {
1.388 schwarze 1368: char ubuf[24]; /* buffer to print a number */
1369: struct mctx *ctx; /* current macro call context */
1370: const char *res; /* the string to be pasted */
1371: const char *src; /* source for copying */
1372: char *dst; /* destination for copying */
1373: int iesc; /* index of leading escape char */
1374: int inam; /* index of the escape name */
1375: int iarg; /* index beginning the argument */
1376: int iendarg; /* index right after the argument */
1377: int iend; /* index right after the sequence */
1378: int deftype; /* type of definition to paste */
1379: int argi; /* macro argument index */
1380: int quote_args; /* true for \\$@, false for \\$* */
1381: int asz; /* length of the replacement */
1382: int rsz; /* length of the rest of the string */
1383: int npos; /* position in numeric expression */
1.181 schwarze 1384: int expand_count; /* to avoid infinite loops */
1.303 schwarze 1385:
1.170 schwarze 1386: expand_count = 0;
1.388 schwarze 1387: while (buf->buf[pos] != '\0') {
1.170 schwarze 1388:
1.388 schwarze 1389: /*
1390: * Skip plain ASCII characters.
1391: * If we have a non-standard escape character,
1392: * escape literal backslashes because all processing in
1393: * subsequent functions uses the standard escaping rules.
1394: */
1.205 schwarze 1395:
1.388 schwarze 1396: if (buf->buf[pos] != ec) {
1397: if (ec != ASCII_ESC && buf->buf[pos] == '\\') {
1398: roff_expand_patch(buf, pos, "\\e", pos + 1);
1399: pos++;
1.303 schwarze 1400: }
1.388 schwarze 1401: pos++;
1.205 schwarze 1402: continue;
1.303 schwarze 1403: }
1.205 schwarze 1404:
1.388 schwarze 1405: /*
1406: * Parse escape sequences,
1407: * issue diagnostic messages when appropriate,
1408: * and skip sequences that do not need expansion.
1409: * If we have a non-standard escape character, translate
1410: * it to backslashes and translate backslashes to \e.
1411: */
1.205 schwarze 1412:
1.388 schwarze 1413: if (roff_escape(buf->buf, ln, pos,
1414: &iesc, &iarg, &iendarg, &iend) != ESCAPE_EXPAND) {
1415: while (pos < iend) {
1416: if (buf->buf[pos] == ec) {
1417: buf->buf[pos] = '\\';
1418: if (pos + 1 < iend)
1419: pos++;
1420: } else if (buf->buf[pos] == '\\') {
1421: roff_expand_patch(buf,
1422: pos, "\\e", pos + 1);
1423: pos++;
1424: iend++;
1425: }
1426: pos++;
1.352 schwarze 1427: }
1.205 schwarze 1428: continue;
1.152 kristaps 1429: }
1430:
1.108 schwarze 1431: /*
1.388 schwarze 1432: * Treat "\E" just like "\";
1433: * it only makes a difference in copy mode.
1.108 schwarze 1434: */
1435:
1.388 schwarze 1436: inam = iesc + 1;
1437: while (buf->buf[inam] == 'E')
1438: inam++;
1439:
1440: /* Handle expansion. */
1441:
1442: res = NULL;
1443: switch (buf->buf[inam]) {
1444: case '*':
1445: if (iendarg == iarg)
1.206 schwarze 1446: break;
1.388 schwarze 1447: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1448: if ((res = roff_getstrn(r, buf->buf + iarg,
1449: iendarg - iarg, &deftype)) != NULL)
1.206 schwarze 1450: break;
1.94 kristaps 1451:
1.388 schwarze 1452: /*
1453: * If not overriden,
1454: * let \*(.T through to the formatters.
1455: */
1.94 kristaps 1456:
1.388 schwarze 1457: if (iendarg - iarg == 2 &&
1458: buf->buf[iarg] == '.' &&
1459: buf->buf[iarg + 1] == 'T') {
1460: roff_setstrn(&r->strtab, ".T", 2, NULL, 0, 0);
1461: pos = iend;
1.253 schwarze 1462: continue;
1463: }
1.94 kristaps 1464:
1.388 schwarze 1465: mandoc_msg(MANDOCERR_STR_UNDEF, ln, iesc,
1466: "%.*s", iendarg - iarg, buf->buf + iarg);
1467: break;
1.108 schwarze 1468:
1.339 schwarze 1469: case '$':
1470: if (r->mstackpos < 0) {
1.388 schwarze 1471: mandoc_msg(MANDOCERR_ARG_UNDEF, ln, iesc,
1472: "%.*s", iend - iesc, buf->buf + iesc);
1.339 schwarze 1473: break;
1474: }
1475: ctx = r->mstack + r->mstackpos;
1.388 schwarze 1476: argi = buf->buf[iarg] - '1';
1477: if (argi >= 0 && argi <= 8) {
1478: if (argi < ctx->argc)
1479: res = ctx->argv[argi];
1.339 schwarze 1480: break;
1481: }
1.388 schwarze 1482: if (buf->buf[iarg] == '*')
1.339 schwarze 1483: quote_args = 0;
1.388 schwarze 1484: else if (buf->buf[iarg] == '@')
1.339 schwarze 1485: quote_args = 1;
1486: else {
1.388 schwarze 1487: mandoc_msg(MANDOCERR_ARG_NONUM, ln, iesc,
1488: "%.*s", iend - iesc, buf->buf + iesc);
1.339 schwarze 1489: break;
1490: }
1491: asz = 0;
1.388 schwarze 1492: for (argi = 0; argi < ctx->argc; argi++) {
1493: if (argi)
1.339 schwarze 1494: asz++; /* blank */
1495: if (quote_args)
1496: asz += 2; /* quotes */
1.388 schwarze 1497: asz += strlen(ctx->argv[argi]);
1.339 schwarze 1498: }
1.388 schwarze 1499: if (asz != iend - iesc) {
1500: rsz = buf->sz - iend;
1501: if (asz < iend - iesc)
1502: memmove(buf->buf + iesc + asz,
1503: buf->buf + iend, rsz);
1504: buf->sz = iesc + asz + rsz;
1505: buf->buf = mandoc_realloc(buf->buf, buf->sz);
1506: if (asz > iend - iesc)
1507: memmove(buf->buf + iesc + asz,
1508: buf->buf + iend, rsz);
1.339 schwarze 1509: }
1.388 schwarze 1510: dst = buf->buf + iesc;
1511: for (argi = 0; argi < ctx->argc; argi++) {
1512: if (argi)
1513: *dst++ = ' ';
1.339 schwarze 1514: if (quote_args)
1.388 schwarze 1515: *dst++ = '"';
1516: src = ctx->argv[argi];
1517: while (*src != '\0')
1518: *dst++ = *src++;
1.339 schwarze 1519: if (quote_args)
1.388 schwarze 1520: *dst++ = '"';
1.339 schwarze 1521: }
1522: continue;
1.207 schwarze 1523: case 'B':
1.206 schwarze 1524: npos = 0;
1.388 schwarze 1525: ubuf[0] = iendarg > iarg && iend > iendarg &&
1526: roff_evalnum(r, ln, buf->buf + iarg, &npos,
1527: NULL, ROFFNUM_SCALE) &&
1528: npos == iendarg - iarg ? '1' : '0';
1.206 schwarze 1529: ubuf[1] = '\0';
1.388 schwarze 1530: res = ubuf;
1.206 schwarze 1531: break;
1.389 schwarze 1532: case 'V':
1533: mandoc_msg(MANDOCERR_UNSUPP, ln, iesc,
1534: "%.*s", iend - iesc, buf->buf + iesc);
1535: roff_expand_patch(buf, iendarg, "}", iend);
1536: roff_expand_patch(buf, iesc, "${", iarg);
1537: continue;
1.390 ! schwarze 1538: case 'g':
! 1539: break;
1.207 schwarze 1540: case 'n':
1.388 schwarze 1541: if (iendarg > iarg)
1.218 schwarze 1542: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.388 schwarze 1543: roff_getregn(r, buf->buf + iarg,
1544: iendarg - iarg, buf->buf[inam + 1]));
1.218 schwarze 1545: else
1546: ubuf[0] = '\0';
1.388 schwarze 1547: res = ubuf;
1.206 schwarze 1548: break;
1.207 schwarze 1549: case 'w':
1.388 schwarze 1550: (void)snprintf(ubuf, sizeof(ubuf),
1551: "%d", (iendarg - iarg) * 24);
1552: res = ubuf;
1553: break;
1554: default:
1.206 schwarze 1555: break;
1556: }
1.388 schwarze 1557: if (res == NULL)
1.142 kristaps 1558: res = "";
1.388 schwarze 1559: if (++expand_count > EXPAND_LIMIT ||
1560: buf->sz + strlen(res) > SHRT_MAX) {
1561: mandoc_msg(MANDOCERR_ROFFLOOP, ln, iesc, NULL);
1.277 schwarze 1562: return ROFF_IGN;
1.94 kristaps 1563: }
1.388 schwarze 1564: roff_expand_patch(buf, iesc, res, iend);
1565: }
1566: return ROFF_CONT;
1567: }
1.94 kristaps 1568:
1.388 schwarze 1569: /*
1570: * Replace the substring from the start position (inclusive)
1571: * to end position (exclusive) with the repl(acement) string.
1572: */
1573: static void
1574: roff_expand_patch(struct buf *buf, int start, const char *repl, int end)
1575: {
1576: char *nbuf;
1.108 schwarze 1577:
1.389 schwarze 1578: buf->sz = mandoc_asprintf(&nbuf, "%.*s%s%s", start, buf->buf,
1579: repl, buf->buf + end) + 1;
1.388 schwarze 1580: free(buf->buf);
1581: buf->buf = nbuf;
1.154 kristaps 1582: }
1.353 schwarze 1583:
1584: /*
1585: * Parse a quoted or unquoted roff-style request or macro argument.
1586: * Return a pointer to the parsed argument, which is either the original
1587: * pointer or advanced by one byte in case the argument is quoted.
1588: * NUL-terminate the argument in place.
1589: * Collapse pairs of quotes inside quoted arguments.
1590: * Advance the argument pointer to the next argument,
1591: * or to the NUL byte terminating the argument line.
1592: */
1593: char *
1.355 schwarze 1594: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.353 schwarze 1595: {
1.355 schwarze 1596: struct buf buf;
1.366 schwarze 1597: char *cp, *start;
1.355 schwarze 1598: int newesc, pairs, quoted, white;
1.353 schwarze 1599:
1600: /* Quoting can only start with a new word. */
1601: start = *cpp;
1602: quoted = 0;
1603: if ('"' == *start) {
1604: quoted = 1;
1605: start++;
1606: }
1607:
1.355 schwarze 1608: newesc = pairs = white = 0;
1.353 schwarze 1609: for (cp = start; '\0' != *cp; cp++) {
1610:
1611: /*
1612: * Move the following text left
1613: * after quoted quotes and after "\\" and "\t".
1614: */
1615: if (pairs)
1616: cp[-pairs] = cp[0];
1617:
1618: if ('\\' == cp[0]) {
1619: /*
1620: * In copy mode, translate double to single
1621: * backslashes and backslash-t to literal tabs.
1622: */
1623: switch (cp[1]) {
1624: case 'a':
1625: case 't':
1.354 schwarze 1626: cp[-pairs] = '\t';
1.355 schwarze 1627: pairs++;
1628: cp++;
1629: break;
1.353 schwarze 1630: case '\\':
1.355 schwarze 1631: newesc = 1;
1632: cp[-pairs] = ASCII_ESC;
1.353 schwarze 1633: pairs++;
1634: cp++;
1635: break;
1636: case ' ':
1637: /* Skip escaped blanks. */
1638: if (0 == quoted)
1639: cp++;
1640: break;
1641: default:
1642: break;
1643: }
1644: } else if (0 == quoted) {
1645: if (' ' == cp[0]) {
1646: /* Unescaped blanks end unquoted args. */
1647: white = 1;
1648: break;
1649: }
1650: } else if ('"' == cp[0]) {
1651: if ('"' == cp[1]) {
1652: /* Quoted quotes collapse. */
1653: pairs++;
1654: cp++;
1655: } else {
1656: /* Unquoted quotes end quoted args. */
1657: quoted = 2;
1658: break;
1659: }
1660: }
1661: }
1662:
1663: /* Quoted argument without a closing quote. */
1664: if (1 == quoted)
1665: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1666:
1667: /* NUL-terminate this argument and move to the next one. */
1668: if (pairs)
1669: cp[-pairs] = '\0';
1670: if ('\0' != *cp) {
1671: *cp++ = '\0';
1672: while (' ' == *cp)
1673: cp++;
1674: }
1675: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1676: *cpp = cp;
1677:
1678: if ('\0' == *cp && (white || ' ' == cp[-1]))
1679: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1680:
1.355 schwarze 1681: start = mandoc_strdup(start);
1682: if (newesc == 0)
1683: return start;
1684:
1685: buf.buf = start;
1686: buf.sz = strlen(start) + 1;
1687: buf.next = NULL;
1688: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1689: free(buf.buf);
1690: buf.buf = mandoc_strdup("");
1691: }
1692: return buf.buf;
1.353 schwarze 1693: }
1694:
1.154 kristaps 1695:
1696: /*
1.275 schwarze 1697: * Process text streams.
1.154 kristaps 1698: */
1.340 schwarze 1699: static int
1.305 schwarze 1700: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1701: {
1702: size_t sz;
1703: const char *start;
1.178 schwarze 1704: char *p;
1705: int isz;
1.154 kristaps 1706: enum mandoc_esc esc;
1707:
1.275 schwarze 1708: /* Spring the input line trap. */
1709:
1710: if (roffit_lines == 1) {
1711: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1712: free(buf->buf);
1713: buf->buf = p;
1714: buf->sz = isz + 1;
1715: *offs = 0;
1716: free(roffit_macro);
1717: roffit_lines = 0;
1.277 schwarze 1718: return ROFF_REPARSE;
1.275 schwarze 1719: } else if (roffit_lines > 1)
1720: --roffit_lines;
1721:
1.305 schwarze 1722: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1723: if (roffce_lines < 1) {
1724: r->man->last = roffce_node;
1725: r->man->next = ROFF_NEXT_SIBLING;
1726: roffce_lines = 0;
1727: roffce_node = NULL;
1728: } else
1729: roffce_lines--;
1730: }
1731:
1.275 schwarze 1732: /* Convert all breakable hyphens into ASCII_HYPH. */
1733:
1.238 schwarze 1734: start = p = buf->buf + pos;
1.154 kristaps 1735:
1.238 schwarze 1736: while (*p != '\0') {
1.154 kristaps 1737: sz = strcspn(p, "-\\");
1738: p += sz;
1739:
1.238 schwarze 1740: if (*p == '\0')
1.159 kristaps 1741: break;
1742:
1.238 schwarze 1743: if (*p == '\\') {
1.154 kristaps 1744: /* Skip over escapes. */
1745: p++;
1.189 schwarze 1746: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1747: if (esc == ESCAPE_ERROR)
1.154 kristaps 1748: break;
1.264 schwarze 1749: while (*p == '-')
1750: p++;
1.155 kristaps 1751: continue;
1.159 kristaps 1752: } else if (p == start) {
1.158 kristaps 1753: p++;
1.155 kristaps 1754: continue;
1.158 kristaps 1755: }
1.155 kristaps 1756:
1.171 schwarze 1757: if (isalpha((unsigned char)p[-1]) &&
1758: isalpha((unsigned char)p[1]))
1.155 kristaps 1759: *p = ASCII_HYPH;
1760: p++;
1.94 kristaps 1761: }
1.277 schwarze 1762: return ROFF_CONT;
1.94 kristaps 1763: }
1764:
1.340 schwarze 1765: int
1.377 schwarze 1766: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs, size_t len)
1.67 kristaps 1767: {
1.294 schwarze 1768: enum roff_tok t;
1.340 schwarze 1769: int e;
1.238 schwarze 1770: int pos; /* parse point */
1.243 schwarze 1771: int spos; /* saved parse point for messages */
1.238 schwarze 1772: int ppos; /* original offset in buf->buf */
1773: int ctl; /* macro line (boolean) */
1774:
1775: ppos = pos = *offs;
1.377 schwarze 1776:
1777: if (len > 80 && r->tbl == NULL && r->eqn == NULL &&
1778: (r->man->flags & ROFF_NOFILL) == 0 &&
1779: strchr(" .\\", buf->buf[pos]) == NULL &&
1780: buf->buf[pos] != r->control &&
1781: strcspn(buf->buf, " ") < 80)
1782: mandoc_msg(MANDOCERR_TEXT_LONG, ln, (int)len - 1,
1783: "%.20s...", buf->buf + pos);
1.79 kristaps 1784:
1.230 schwarze 1785: /* Handle in-line equation delimiters. */
1786:
1.236 schwarze 1787: if (r->tbl == NULL &&
1788: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1789: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1790: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1791: if (e == ROFF_REPARSE)
1.277 schwarze 1792: return e;
1.230 schwarze 1793: assert(e == ROFF_CONT);
1794: }
1795:
1.387 schwarze 1796: /* Handle comments and escape sequences. */
1797:
1798: e = roff_parse_comment(r, buf, ln, pos, r->escape);
1799: if ((e & ROFF_MASK) == ROFF_IGN)
1800: return e;
1801: assert(e == ROFF_CONT);
1.94 kristaps 1802:
1.355 schwarze 1803: e = roff_expand(r, buf, ln, pos, r->escape);
1.340 schwarze 1804: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1805: return e;
1.238 schwarze 1806: assert(e == ROFF_CONT);
1.94 kristaps 1807:
1.238 schwarze 1808: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1809:
1.94 kristaps 1810: /*
1.79 kristaps 1811: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1812: * text through the macro's filter.
1813: * Equations process all content themselves.
1814: * Tables process almost all content themselves, but we want
1815: * to warn about macros before passing it there.
1.79 kristaps 1816: */
1.74 kristaps 1817:
1.252 schwarze 1818: if (r->last != NULL && ! ctl) {
1.78 kristaps 1819: t = r->last->tok;
1.238 schwarze 1820: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1821: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1822: return e;
1.340 schwarze 1823: e &= ~ROFF_MASK;
1824: } else
1825: e = ROFF_IGN;
1.319 schwarze 1826: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1827: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1828: return e;
1.319 schwarze 1829: }
1.321 schwarze 1830: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1831: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1832: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1833: return e;
1.321 schwarze 1834: }
1.367 schwarze 1835: if ( ! ctl) {
1836: r->options &= ~MPARSE_COMMENT;
1.340 schwarze 1837: return roff_parsetext(r, buf, pos, offs) | e;
1.367 schwarze 1838: }
1.228 schwarze 1839:
1840: /* Skip empty request lines. */
1841:
1.238 schwarze 1842: if (buf->buf[pos] == '"') {
1.350 schwarze 1843: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1844: return ROFF_IGN;
1.238 schwarze 1845: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1846: return ROFF_IGN;
1.67 kristaps 1847:
1.79 kristaps 1848: /*
1849: * If a scope is open, go to the child handler for that macro,
1850: * as it may want to preprocess before doing anything with it.
1851: */
1.78 kristaps 1852:
1.79 kristaps 1853: if (r->last) {
1854: t = r->last->tok;
1.277 schwarze 1855: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1856: }
1.78 kristaps 1857:
1.367 schwarze 1858: r->options &= ~MPARSE_COMMENT;
1.243 schwarze 1859: spos = pos;
1860: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.386 schwarze 1861: return roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1862: }
1863:
1864: /*
1865: * Handle a new request or macro.
1866: * May be called outside any scope or from inside a conditional scope.
1867: */
1868: static int
1869: roff_req_or_macro(ROFF_ARGS) {
1.243 schwarze 1870:
1.386 schwarze 1871: /* For now, tables ignore most macros and some request. */
1.243 schwarze 1872:
1.386 schwarze 1873: if (r->tbl != NULL && (tok == TOKEN_NONE || tok == ROFF_TS ||
1874: tok == ROFF_br || tok == ROFF_ce || tok == ROFF_rj ||
1875: tok == ROFF_sp)) {
1.350 schwarze 1876: mandoc_msg(MANDOCERR_TBLMACRO,
1.386 schwarze 1877: ln, ppos, "%s", buf->buf + ppos);
1878: if (tok != TOKEN_NONE)
1.277 schwarze 1879: return ROFF_IGN;
1.257 schwarze 1880: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1881: pos++;
1.291 schwarze 1882: while (buf->buf[pos] == ' ')
1.257 schwarze 1883: pos++;
1.321 schwarze 1884: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1885: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1886: return ROFF_IGN;
1.243 schwarze 1887: }
1888:
1.305 schwarze 1889: /* For now, let high level macros abort .ce mode. */
1890:
1.386 schwarze 1891: if (roffce_node != NULL &&
1892: (tok == TOKEN_NONE || tok == ROFF_Dd || tok == ROFF_EQ ||
1893: tok == ROFF_TH || tok == ROFF_TS)) {
1.305 schwarze 1894: r->man->last = roffce_node;
1895: r->man->next = ROFF_NEXT_SIBLING;
1896: roffce_lines = 0;
1897: roffce_node = NULL;
1898: }
1899:
1.79 kristaps 1900: /*
1.243 schwarze 1901: * This is neither a roff request nor a user-defined macro.
1902: * Let the standard macro set parsers handle it.
1.79 kristaps 1903: */
1.67 kristaps 1904:
1.386 schwarze 1905: if (tok == TOKEN_NONE)
1.277 schwarze 1906: return ROFF_CONT;
1.243 schwarze 1907:
1.386 schwarze 1908: /* Execute a roff request or a user-defined macro. */
1.67 kristaps 1909:
1.386 schwarze 1910: return (*roffs[tok].proc)(r, tok, buf, ln, ppos, pos, offs);
1.74 kristaps 1911: }
1912:
1.339 schwarze 1913: /*
1914: * Internal interface function to tell the roff parser that execution
1915: * of the current macro ended. This is required because macro
1916: * definitions usually do not end with a .return request.
1917: */
1918: void
1919: roff_userret(struct roff *r)
1920: {
1921: struct mctx *ctx;
1922: int i;
1923:
1924: assert(r->mstackpos >= 0);
1925: ctx = r->mstack + r->mstackpos;
1926: for (i = 0; i < ctx->argc; i++)
1927: free(ctx->argv[i]);
1928: ctx->argc = 0;
1929: r->mstackpos--;
1930: }
1931:
1.117 kristaps 1932: void
1.74 kristaps 1933: roff_endparse(struct roff *r)
1934: {
1.321 schwarze 1935: if (r->last != NULL)
1.350 schwarze 1936: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1937: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 1938:
1.321 schwarze 1939: if (r->eqn != NULL) {
1.350 schwarze 1940: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 1941: r->eqn->node->line, r->eqn->node->pos, "EQ");
1942: eqn_parse(r->eqn);
1943: r->eqn = NULL;
1.125 kristaps 1944: }
1945:
1.321 schwarze 1946: if (r->tbl != NULL) {
1.346 schwarze 1947: tbl_end(r->tbl, 1);
1.321 schwarze 1948: r->tbl = NULL;
1.117 kristaps 1949: }
1.67 kristaps 1950: }
1951:
1952: /*
1.386 schwarze 1953: * Parse the request or macro name at buf[*pos].
1954: * Return ROFF_RENAMED, ROFF_USERDEF, or a ROFF_* token value.
1955: * For empty, undefined, mdoc(7), and man(7) macros, return TOKEN_NONE.
1956: * As a side effect, set r->current_string to the definition or to NULL.
1.67 kristaps 1957: */
1.294 schwarze 1958: static enum roff_tok
1.214 schwarze 1959: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1960: {
1.214 schwarze 1961: char *cp;
1.106 kristaps 1962: const char *mac;
1963: size_t maclen;
1.315 schwarze 1964: int deftype;
1.294 schwarze 1965: enum roff_tok t;
1.67 kristaps 1966:
1.214 schwarze 1967: cp = buf + *pos;
1968:
1969: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1970: return TOKEN_NONE;
1.67 kristaps 1971:
1.214 schwarze 1972: mac = cp;
1973: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1974:
1.315 schwarze 1975: deftype = ROFFDEF_USER | ROFFDEF_REN;
1976: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1977: switch (deftype) {
1978: case ROFFDEF_USER:
1979: t = ROFF_USERDEF;
1980: break;
1981: case ROFFDEF_REN:
1982: t = ROFF_RENAMED;
1983: break;
1984: default:
1985: t = roffhash_find(r->reqtab, mac, maclen);
1986: break;
1987: }
1.294 schwarze 1988: if (t != TOKEN_NONE)
1.214 schwarze 1989: *pos = cp - buf;
1.325 schwarze 1990: else if (deftype == ROFFDEF_UNDEF) {
1991: /* Using an undefined macro defines it to be empty. */
1992: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1993: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1994: }
1.277 schwarze 1995: return t;
1.67 kristaps 1996: }
1997:
1.266 schwarze 1998: /* --- handling of request blocks ----------------------------------------- */
1999:
1.375 schwarze 2000: /*
2001: * Close a macro definition block or an "ignore" block.
2002: */
1.340 schwarze 2003: static int
1.76 kristaps 2004: roff_cblock(ROFF_ARGS)
1.67 kristaps 2005: {
1.375 schwarze 2006: int rr;
1.79 kristaps 2007:
1.238 schwarze 2008: if (r->last == NULL) {
1.350 schwarze 2009: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2010: return ROFF_IGN;
1.76 kristaps 2011: }
1.67 kristaps 2012:
1.81 kristaps 2013: switch (r->last->tok) {
1.207 schwarze 2014: case ROFF_am:
2015: case ROFF_ami:
2016: case ROFF_de:
2017: case ROFF_dei:
2018: case ROFF_ig:
1.81 kristaps 2019: break;
1.375 schwarze 2020: case ROFF_am1:
2021: case ROFF_de1:
2022: /* Remapped in roff_block(). */
2023: abort();
1.81 kristaps 2024: default:
1.350 schwarze 2025: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2026: return ROFF_IGN;
1.76 kristaps 2027: }
1.67 kristaps 2028:
1.375 schwarze 2029: roffnode_pop(r);
2030: roffnode_cleanscope(r);
2031:
2032: /*
2033: * If a conditional block with braces is still open,
2034: * check for "\}" block end markers.
2035: */
2036:
2037: if (r->last != NULL && r->last->endspan < 0) {
2038: rr = 1; /* If arguments follow "\}", warn about them. */
2039: roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
2040: }
2041:
1.238 schwarze 2042: if (buf->buf[pos] != '\0')
1.350 schwarze 2043: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 2044: ".. %s", buf->buf + pos);
1.71 kristaps 2045:
1.277 schwarze 2046: return ROFF_IGN;
1.67 kristaps 2047: }
2048:
1.364 schwarze 2049: /*
2050: * Pop all nodes ending at the end of the current input line.
2051: * Return the number of loops ended.
2052: */
1.340 schwarze 2053: static int
1.76 kristaps 2054: roffnode_cleanscope(struct roff *r)
1.67 kristaps 2055: {
1.340 schwarze 2056: int inloop;
1.67 kristaps 2057:
1.340 schwarze 2058: inloop = 0;
1.375 schwarze 2059: while (r->last != NULL && r->last->endspan > 0) {
1.173 schwarze 2060: if (--r->last->endspan != 0)
1.76 kristaps 2061: break;
1.340 schwarze 2062: inloop += roffnode_pop(r);
1.76 kristaps 2063: }
1.340 schwarze 2064: return inloop;
1.67 kristaps 2065: }
2066:
1.364 schwarze 2067: /*
1.375 schwarze 2068: * Handle the closing "\}" of a conditional block.
1.364 schwarze 2069: * Apart from generating warnings, this only pops nodes.
2070: * Return the number of loops ended.
2071: */
1.340 schwarze 2072: static int
1.195 schwarze 2073: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 2074: {
1.76 kristaps 2075: if (NULL == r->last) {
1.350 schwarze 2076: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2077: return 0;
1.76 kristaps 2078: }
2079:
1.82 kristaps 2080: switch (r->last->tok) {
1.207 schwarze 2081: case ROFF_el:
2082: case ROFF_ie:
2083: case ROFF_if:
1.340 schwarze 2084: case ROFF_while:
1.82 kristaps 2085: break;
2086: default:
1.350 schwarze 2087: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2088: return 0;
1.75 kristaps 2089: }
2090:
1.76 kristaps 2091: if (r->last->endspan > -1) {
1.350 schwarze 2092: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2093: return 0;
1.76 kristaps 2094: }
2095:
1.340 schwarze 2096: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 2097: }
2098:
1.340 schwarze 2099: static int
1.80 kristaps 2100: roff_block(ROFF_ARGS)
1.76 kristaps 2101: {
1.315 schwarze 2102: const char *name, *value;
2103: char *call, *cp, *iname, *rname;
2104: size_t csz, namesz, rsz;
2105: int deftype;
1.106 kristaps 2106:
1.220 schwarze 2107: /* Ignore groff compatibility mode for now. */
1.76 kristaps 2108:
1.238 schwarze 2109: if (tok == ROFF_de1)
1.220 schwarze 2110: tok = ROFF_de;
1.251 schwarze 2111: else if (tok == ROFF_dei1)
2112: tok = ROFF_dei;
1.238 schwarze 2113: else if (tok == ROFF_am1)
1.220 schwarze 2114: tok = ROFF_am;
1.251 schwarze 2115: else if (tok == ROFF_ami1)
2116: tok = ROFF_ami;
1.220 schwarze 2117:
2118: /* Parse the macro name argument. */
2119:
1.238 schwarze 2120: cp = buf->buf + pos;
2121: if (tok == ROFF_ig) {
1.220 schwarze 2122: iname = NULL;
2123: namesz = 0;
2124: } else {
2125: iname = cp;
2126: namesz = roff_getname(r, &cp, ln, ppos);
2127: iname[namesz] = '\0';
2128: }
1.107 kristaps 2129:
1.220 schwarze 2130: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 2131:
1.238 schwarze 2132: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2133: deftype = ROFFDEF_USER;
2134: name = roff_getstrn(r, iname, namesz, &deftype);
2135: if (name == NULL) {
1.350 schwarze 2136: mandoc_msg(MANDOCERR_STR_UNDEF,
2137: ln, (int)(iname - buf->buf),
1.220 schwarze 2138: "%.*s", (int)namesz, iname);
2139: namesz = 0;
2140: } else
2141: namesz = strlen(name);
2142: } else
2143: name = iname;
1.107 kristaps 2144:
1.238 schwarze 2145: if (namesz == 0 && tok != ROFF_ig) {
1.350 schwarze 2146: mandoc_msg(MANDOCERR_REQ_EMPTY,
2147: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2148: return ROFF_IGN;
1.220 schwarze 2149: }
1.80 kristaps 2150:
1.106 kristaps 2151: roffnode_push(r, tok, name, ln, ppos);
2152:
2153: /*
2154: * At the beginning of a `de' macro, clear the existing string
2155: * with the same name, if there is one. New content will be
1.193 schwarze 2156: * appended from roff_block_text() in multiline mode.
1.106 kristaps 2157: */
1.107 kristaps 2158:
1.311 schwarze 2159: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 2160: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 2161: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 2162: } else if (tok == ROFF_am || tok == ROFF_ami) {
2163: deftype = ROFFDEF_ANY;
2164: value = roff_getstrn(r, iname, namesz, &deftype);
2165: switch (deftype) { /* Before appending, ... */
2166: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2167: roff_setstrn(&r->strtab, name, namesz,
2168: value, strlen(value), 0);
2169: break;
2170: case ROFFDEF_REN: /* call original standard macro. */
2171: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2172: (int)strlen(value), value);
2173: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2174: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2175: free(call);
2176: break;
2177: case ROFFDEF_STD: /* rename and call standard macro. */
2178: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2179: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2180: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2181: (int)rsz, rname);
2182: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2183: free(call);
2184: free(rname);
2185: break;
2186: default:
2187: break;
2188: }
1.311 schwarze 2189: }
1.76 kristaps 2190:
1.238 schwarze 2191: if (*cp == '\0')
1.277 schwarze 2192: return ROFF_IGN;
1.78 kristaps 2193:
1.220 schwarze 2194: /* Get the custom end marker. */
1.107 kristaps 2195:
1.220 schwarze 2196: iname = cp;
1.213 schwarze 2197: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 2198:
2199: /* Resolve the end marker if it is indirect. */
2200:
1.238 schwarze 2201: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2202: deftype = ROFFDEF_USER;
2203: name = roff_getstrn(r, iname, namesz, &deftype);
2204: if (name == NULL) {
1.350 schwarze 2205: mandoc_msg(MANDOCERR_STR_UNDEF,
2206: ln, (int)(iname - buf->buf),
1.220 schwarze 2207: "%.*s", (int)namesz, iname);
2208: namesz = 0;
2209: } else
2210: namesz = strlen(name);
2211: } else
2212: name = iname;
2213:
1.213 schwarze 2214: if (namesz)
2215: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2216:
1.238 schwarze 2217: if (*cp != '\0')
1.350 schwarze 2218: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2219: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2220:
1.277 schwarze 2221: return ROFF_IGN;
1.78 kristaps 2222: }
2223:
1.340 schwarze 2224: static int
1.80 kristaps 2225: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2226: {
1.294 schwarze 2227: enum roff_tok t;
1.79 kristaps 2228: int i, j;
2229:
2230: /*
1.385 schwarze 2231: * If a custom end marker is a user-defined or predefined macro
2232: * or a request, interpret it.
1.79 kristaps 2233: */
2234:
2235: if (r->last->end) {
1.130 kristaps 2236: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2237: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2238: break;
2239:
1.238 schwarze 2240: if (r->last->end[j] == '\0' &&
2241: (buf->buf[i] == '\0' ||
2242: buf->buf[i] == ' ' ||
2243: buf->buf[i] == '\t')) {
1.79 kristaps 2244: roffnode_pop(r);
2245: roffnode_cleanscope(r);
2246:
1.238 schwarze 2247: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2248: i++;
2249:
2250: pos = i;
1.238 schwarze 2251: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2252: TOKEN_NONE)
1.277 schwarze 2253: return ROFF_RERUN;
2254: return ROFF_IGN;
1.79 kristaps 2255: }
2256: }
2257:
1.385 schwarze 2258: /* Handle the standard end marker. */
1.79 kristaps 2259:
1.238 schwarze 2260: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.385 schwarze 2261: if (t == ROFF_cblock)
2262: return roff_cblock(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2263:
1.385 schwarze 2264: /* Not an end marker, so append the line to the block. */
1.79 kristaps 2265:
1.385 schwarze 2266: if (tok != ROFF_ig)
2267: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
2268: return ROFF_IGN;
1.79 kristaps 2269: }
2270:
1.340 schwarze 2271: static int
1.80 kristaps 2272: roff_block_text(ROFF_ARGS)
1.78 kristaps 2273: {
2274:
1.238 schwarze 2275: if (tok != ROFF_ig)
2276: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2277:
1.277 schwarze 2278: return ROFF_IGN;
1.78 kristaps 2279: }
2280:
1.375 schwarze 2281: /*
2282: * Check for a closing "\}" and handle it.
2283: * In this function, the final "int *offs" argument is used for
2284: * different purposes than elsewhere:
2285: * Input: *offs == 0: caller wants to discard arguments following \}
2286: * *offs == 1: caller wants to preserve text following \}
2287: * Output: *offs = 0: tell caller to discard input line
2288: * *offs = 1: tell caller to use input line
2289: */
1.340 schwarze 2290: static int
1.375 schwarze 2291: roff_cond_checkend(ROFF_ARGS)
1.82 kristaps 2292: {
1.340 schwarze 2293: char *ep;
2294: int endloop, irc, rr;
1.82 kristaps 2295:
1.340 schwarze 2296: irc = ROFF_IGN;
1.82 kristaps 2297: rr = r->last->rule;
1.340 schwarze 2298: endloop = tok != ROFF_while ? ROFF_IGN :
2299: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2300: if (roffnode_cleanscope(r))
2301: irc |= endloop;
1.144 kristaps 2302:
1.196 schwarze 2303: /*
1.375 schwarze 2304: * If "\}" occurs on a macro line without a preceding macro or
2305: * a text line contains nothing else, drop the line completely.
1.196 schwarze 2306: */
2307:
1.238 schwarze 2308: ep = buf->buf + pos;
1.375 schwarze 2309: if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))
1.198 schwarze 2310: rr = 0;
1.196 schwarze 2311:
1.343 schwarze 2312: /*
1.375 schwarze 2313: * The closing delimiter "\}" rewinds the conditional scope
1.343 schwarze 2314: * but is otherwise ignored when interpreting the line.
2315: */
1.144 kristaps 2316:
1.238 schwarze 2317: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2318: switch (ep[1]) {
2319: case '}':
1.376 schwarze 2320: if (ep[2] == '\0')
2321: ep[0] = '\0';
2322: else if (rr)
1.375 schwarze 2323: ep[1] = '&';
2324: else
2325: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2326: if (roff_ccond(r, ln, ep - buf->buf))
2327: irc |= endloop;
1.318 schwarze 2328: break;
2329: case '\0':
2330: ++ep;
2331: break;
2332: default:
2333: ep += 2;
2334: break;
1.197 schwarze 2335: }
1.177 schwarze 2336: }
1.375 schwarze 2337: *offs = rr;
2338: return irc;
2339: }
1.318 schwarze 2340:
1.375 schwarze 2341: /*
2342: * Parse and process a request or macro line in conditional scope.
2343: */
2344: static int
2345: roff_cond_sub(ROFF_ARGS)
2346: {
2347: struct roffnode *bl;
1.386 schwarze 2348: int irc, rr, spos;
1.375 schwarze 2349: enum roff_tok t;
2350:
2351: rr = 0; /* If arguments follow "\}", skip them. */
2352: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.386 schwarze 2353: spos = pos;
1.368 schwarze 2354: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2355:
1.318 schwarze 2356: /*
1.386 schwarze 2357: * Handle requests and macros if the conditional evaluated
2358: * to true or if they are structurally required.
2359: * The .break request is always handled specially.
1.318 schwarze 2360: */
2361:
1.364 schwarze 2362: if (t == ROFF_break) {
2363: if (irc & ROFF_LOOPMASK)
2364: irc = ROFF_IGN | ROFF_LOOPEXIT;
2365: else if (rr) {
2366: for (bl = r->last; bl != NULL; bl = bl->parent) {
2367: bl->rule = 0;
2368: if (bl->tok == ROFF_while)
2369: break;
2370: }
2371: }
1.386 schwarze 2372: } else if (rr || (t < TOKEN_NONE && roffs[t].flags & ROFFMAC_STRUCT)) {
2373: irc |= roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1.383 schwarze 2374: if (irc & ROFF_WHILE)
2375: irc &= ~(ROFF_LOOPCONT | ROFF_LOOPEXIT);
1.386 schwarze 2376: }
1.340 schwarze 2377: return irc;
1.82 kristaps 2378: }
2379:
1.375 schwarze 2380: /*
2381: * Parse and process a text line in conditional scope.
2382: */
1.340 schwarze 2383: static int
1.82 kristaps 2384: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2385: {
1.375 schwarze 2386: int irc, rr;
1.343 schwarze 2387:
1.375 schwarze 2388: rr = 1; /* If arguments follow "\}", preserve them. */
2389: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.340 schwarze 2390: if (rr)
2391: irc |= ROFF_CONT;
2392: return irc;
1.74 kristaps 2393: }
2394:
1.266 schwarze 2395: /* --- handling of numeric and conditional expressions -------------------- */
2396:
1.204 schwarze 2397: /*
2398: * Parse a single signed integer number. Stop at the first non-digit.
2399: * If there is at least one digit, return success and advance the
2400: * parse point, else return failure and let the parse point unchanged.
2401: * Ignore overflows, treat them just like the C language.
2402: */
1.184 schwarze 2403: static int
1.261 schwarze 2404: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2405: {
1.261 schwarze 2406: int myres, scaled, n, p;
1.206 schwarze 2407:
2408: if (NULL == res)
2409: res = &myres;
1.184 schwarze 2410:
2411: p = *pos;
2412: n = v[p] == '-';
1.261 schwarze 2413: if (n || v[p] == '+')
1.184 schwarze 2414: p++;
2415:
1.261 schwarze 2416: if (flags & ROFFNUM_WHITE)
2417: while (isspace((unsigned char)v[p]))
2418: p++;
2419:
1.184 schwarze 2420: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2421: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2422: if (p == *pos + n)
2423: return 0;
2424:
2425: if (n)
2426: *res = -*res;
2427:
1.254 schwarze 2428: /* Each number may be followed by one optional scaling unit. */
2429:
2430: switch (v[p]) {
2431: case 'f':
1.261 schwarze 2432: scaled = *res * 65536;
1.254 schwarze 2433: break;
2434: case 'i':
1.261 schwarze 2435: scaled = *res * 240;
1.254 schwarze 2436: break;
2437: case 'c':
1.261 schwarze 2438: scaled = *res * 240 / 2.54;
1.254 schwarze 2439: break;
2440: case 'v':
2441: case 'P':
1.261 schwarze 2442: scaled = *res * 40;
1.254 schwarze 2443: break;
2444: case 'm':
2445: case 'n':
1.261 schwarze 2446: scaled = *res * 24;
1.254 schwarze 2447: break;
2448: case 'p':
1.261 schwarze 2449: scaled = *res * 10 / 3;
1.254 schwarze 2450: break;
2451: case 'u':
1.261 schwarze 2452: scaled = *res;
1.254 schwarze 2453: break;
2454: case 'M':
1.261 schwarze 2455: scaled = *res * 6 / 25;
1.254 schwarze 2456: break;
2457: default:
1.261 schwarze 2458: scaled = *res;
1.254 schwarze 2459: p--;
2460: break;
2461: }
1.261 schwarze 2462: if (flags & ROFFNUM_SCALE)
2463: *res = scaled;
1.254 schwarze 2464:
2465: *pos = p + 1;
1.277 schwarze 2466: return 1;
1.184 schwarze 2467: }
2468:
1.198 schwarze 2469: /*
2470: * Evaluate a string comparison condition.
2471: * The first character is the delimiter.
2472: * Succeed if the string up to its second occurrence
2473: * matches the string up to its third occurence.
2474: * Advance the cursor after the third occurrence
2475: * or lacking that, to the end of the line.
2476: */
2477: static int
2478: roff_evalstrcond(const char *v, int *pos)
2479: {
2480: const char *s1, *s2, *s3;
2481: int match;
2482:
2483: match = 0;
2484: s1 = v + *pos; /* initial delimiter */
2485: s2 = s1 + 1; /* for scanning the first string */
2486: s3 = strchr(s2, *s1); /* for scanning the second string */
2487:
2488: if (NULL == s3) /* found no middle delimiter */
2489: goto out;
2490:
2491: while ('\0' != *++s3) {
2492: if (*s2 != *s3) { /* mismatch */
2493: s3 = strchr(s3, *s1);
2494: break;
2495: }
2496: if (*s3 == *s1) { /* found the final delimiter */
2497: match = 1;
2498: break;
2499: }
2500: s2++;
2501: }
2502:
2503: out:
2504: if (NULL == s3)
2505: s3 = strchr(s2, '\0');
1.242 schwarze 2506: else if (*s3 != '\0')
1.198 schwarze 2507: s3++;
2508: *pos = s3 - v;
1.277 schwarze 2509: return match;
1.198 schwarze 2510: }
2511:
1.204 schwarze 2512: /*
2513: * Evaluate an optionally negated single character, numerical,
2514: * or string condition.
2515: */
1.198 schwarze 2516: static int
1.271 schwarze 2517: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2518: {
1.336 schwarze 2519: const char *start, *end;
2520: char *cp, *name;
2521: size_t sz;
2522: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2523:
1.198 schwarze 2524: if ('!' == v[*pos]) {
2525: wanttrue = 0;
2526: (*pos)++;
2527: } else
2528: wanttrue = 1;
2529:
1.88 kristaps 2530: switch (v[*pos]) {
1.240 schwarze 2531: case '\0':
1.277 schwarze 2532: return 0;
1.207 schwarze 2533: case 'n':
2534: case 'o':
1.88 kristaps 2535: (*pos)++;
1.277 schwarze 2536: return wanttrue;
1.207 schwarze 2537: case 'e':
2538: case 't':
1.239 schwarze 2539: case 'v':
1.88 kristaps 2540: (*pos)++;
1.277 schwarze 2541: return !wanttrue;
1.336 schwarze 2542: case 'c':
2543: do {
2544: (*pos)++;
2545: } while (v[*pos] == ' ');
2546:
2547: /*
2548: * Quirk for groff compatibility:
2549: * The horizontal tab is neither available nor unavailable.
2550: */
2551:
2552: if (v[*pos] == '\t') {
2553: (*pos)++;
2554: return 0;
2555: }
2556:
2557: /* Printable ASCII characters are available. */
2558:
2559: if (v[*pos] != '\\') {
2560: (*pos)++;
2561: return wanttrue;
2562: }
2563:
2564: end = v + ++*pos;
2565: switch (mandoc_escape(&end, &start, &len)) {
2566: case ESCAPE_SPECIAL:
2567: istrue = mchars_spec2cp(start, len) != -1;
2568: break;
2569: case ESCAPE_UNICODE:
2570: istrue = 1;
2571: break;
2572: case ESCAPE_NUMBERED:
2573: istrue = mchars_num2char(start, len) != -1;
2574: break;
2575: default:
2576: istrue = !wanttrue;
2577: break;
2578: }
2579: *pos = end - v;
2580: return istrue == wanttrue;
1.310 schwarze 2581: case 'd':
1.271 schwarze 2582: case 'r':
1.310 schwarze 2583: cp = v + *pos + 1;
2584: while (*cp == ' ')
2585: cp++;
2586: name = cp;
2587: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2588: if (sz == 0)
2589: istrue = 0;
2590: else if (v[*pos] == 'r')
2591: istrue = roff_hasregn(r, name, sz);
2592: else {
2593: deftype = ROFFDEF_ANY;
2594: roff_getstrn(r, name, sz, &deftype);
2595: istrue = !!deftype;
2596: }
1.363 schwarze 2597: *pos = (name + sz) - v;
1.310 schwarze 2598: return istrue == wanttrue;
1.88 kristaps 2599: default:
2600: break;
2601: }
2602:
1.241 schwarze 2603: savepos = *pos;
1.261 schwarze 2604: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2605: return (number > 0) == wanttrue;
1.241 schwarze 2606: else if (*pos == savepos)
1.277 schwarze 2607: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2608: else
1.277 schwarze 2609: return 0;
1.88 kristaps 2610: }
2611:
1.340 schwarze 2612: static int
1.103 kristaps 2613: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2614: {
1.123 schwarze 2615:
1.277 schwarze 2616: return ROFF_IGN;
1.89 kristaps 2617: }
2618:
1.340 schwarze 2619: static int
1.251 schwarze 2620: roff_insec(ROFF_ARGS)
2621: {
2622:
1.350 schwarze 2623: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2624: return ROFF_IGN;
1.251 schwarze 2625: }
2626:
1.340 schwarze 2627: static int
1.251 schwarze 2628: roff_unsupp(ROFF_ARGS)
2629: {
2630:
1.350 schwarze 2631: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2632: return ROFF_IGN;
1.251 schwarze 2633: }
2634:
1.340 schwarze 2635: static int
1.82 kristaps 2636: roff_cond(ROFF_ARGS)
1.74 kristaps 2637: {
1.340 schwarze 2638: int irc;
1.173 schwarze 2639:
2640: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2641:
1.207 schwarze 2642: /*
1.134 kristaps 2643: * An `.el' has no conditional body: it will consume the value
2644: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2645: * defaults to DENY.
1.134 kristaps 2646: *
2647: * If we're not an `el', however, then evaluate the conditional.
2648: */
1.133 kristaps 2649:
1.238 schwarze 2650: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2651: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2652: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2653:
1.134 kristaps 2654: /*
2655: * An if-else will put the NEGATION of the current evaluated
2656: * conditional into the stack of rules.
2657: */
2658:
1.238 schwarze 2659: if (tok == ROFF_ie) {
1.223 schwarze 2660: if (r->rstackpos + 1 == r->rstacksz) {
2661: r->rstacksz += 16;
2662: r->rstack = mandoc_reallocarray(r->rstack,
2663: r->rstacksz, sizeof(int));
1.134 kristaps 2664: }
1.198 schwarze 2665: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2666: }
1.88 kristaps 2667:
2668: /* If the parent has false as its rule, then so do we. */
2669:
1.198 schwarze 2670: if (r->last->parent && !r->last->parent->rule)
2671: r->last->rule = 0;
1.88 kristaps 2672:
2673: /*
1.173 schwarze 2674: * Determine scope.
2675: * If there is nothing on the line after the conditional,
2676: * not even whitespace, use next-line scope.
1.340 schwarze 2677: * Except that .while does not support next-line scope.
1.88 kristaps 2678: */
1.74 kristaps 2679:
1.340 schwarze 2680: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2681: r->last->endspan = 2;
2682: goto out;
2683: }
2684:
1.238 schwarze 2685: while (buf->buf[pos] == ' ')
1.173 schwarze 2686: pos++;
2687:
2688: /* An opening brace requests multiline scope. */
1.75 kristaps 2689:
1.238 schwarze 2690: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2691: r->last->endspan = -1;
2692: pos += 2;
1.272 schwarze 2693: while (buf->buf[pos] == ' ')
2694: pos++;
1.173 schwarze 2695: goto out;
1.207 schwarze 2696: }
1.74 kristaps 2697:
1.77 kristaps 2698: /*
1.173 schwarze 2699: * Anything else following the conditional causes
2700: * single-line scope. Warn if the scope contains
2701: * nothing but trailing whitespace.
1.77 kristaps 2702: */
2703:
1.238 schwarze 2704: if (buf->buf[pos] == '\0')
1.350 schwarze 2705: mandoc_msg(MANDOCERR_COND_EMPTY,
2706: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2707:
1.173 schwarze 2708: r->last->endspan = 1;
1.74 kristaps 2709:
1.173 schwarze 2710: out:
1.75 kristaps 2711: *offs = pos;
1.340 schwarze 2712: irc = ROFF_RERUN;
2713: if (tok == ROFF_while)
2714: irc |= ROFF_WHILE;
2715: return irc;
1.83 schwarze 2716: }
2717:
1.340 schwarze 2718: static int
1.92 schwarze 2719: roff_ds(ROFF_ARGS)
2720: {
1.212 schwarze 2721: char *string;
2722: const char *name;
2723: size_t namesz;
1.96 kristaps 2724:
1.251 schwarze 2725: /* Ignore groff compatibility mode for now. */
2726:
2727: if (tok == ROFF_ds1)
2728: tok = ROFF_ds;
2729: else if (tok == ROFF_as1)
2730: tok = ROFF_as;
2731:
1.96 kristaps 2732: /*
1.212 schwarze 2733: * The first word is the name of the string.
2734: * If it is empty or terminated by an escape sequence,
2735: * abort the `ds' request without defining anything.
1.96 kristaps 2736: */
1.92 schwarze 2737:
1.238 schwarze 2738: name = string = buf->buf + pos;
2739: if (*name == '\0')
1.277 schwarze 2740: return ROFF_IGN;
1.92 schwarze 2741:
1.212 schwarze 2742: namesz = roff_getname(r, &string, ln, pos);
1.363 schwarze 2743: switch (name[namesz]) {
2744: case '\\':
1.277 schwarze 2745: return ROFF_IGN;
1.363 schwarze 2746: case '\t':
2747: string = buf->buf + pos + namesz;
2748: break;
2749: default:
2750: break;
2751: }
1.212 schwarze 2752:
2753: /* Read past the initial double-quote, if any. */
1.238 schwarze 2754: if (*string == '"')
1.92 schwarze 2755: string++;
2756:
1.96 kristaps 2757: /* The rest is the value. */
1.212 schwarze 2758: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2759: ROFF_as == tok);
1.311 schwarze 2760: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2761: return ROFF_IGN;
1.92 schwarze 2762: }
2763:
1.204 schwarze 2764: /*
2765: * Parse a single operator, one or two characters long.
2766: * If the operator is recognized, return success and advance the
2767: * parse point, else return failure and let the parse point unchanged.
2768: */
2769: static int
2770: roff_getop(const char *v, int *pos, char *res)
2771: {
2772:
2773: *res = v[*pos];
2774:
2775: switch (*res) {
1.207 schwarze 2776: case '+':
2777: case '-':
2778: case '*':
2779: case '/':
2780: case '%':
2781: case '&':
2782: case ':':
1.204 schwarze 2783: break;
2784: case '<':
2785: switch (v[*pos + 1]) {
1.207 schwarze 2786: case '=':
1.204 schwarze 2787: *res = 'l';
2788: (*pos)++;
2789: break;
1.207 schwarze 2790: case '>':
1.204 schwarze 2791: *res = '!';
2792: (*pos)++;
2793: break;
1.207 schwarze 2794: case '?':
1.204 schwarze 2795: *res = 'i';
2796: (*pos)++;
2797: break;
2798: default:
2799: break;
2800: }
2801: break;
2802: case '>':
2803: switch (v[*pos + 1]) {
1.207 schwarze 2804: case '=':
1.204 schwarze 2805: *res = 'g';
2806: (*pos)++;
2807: break;
1.207 schwarze 2808: case '?':
1.204 schwarze 2809: *res = 'a';
2810: (*pos)++;
2811: break;
2812: default:
2813: break;
2814: }
2815: break;
2816: case '=':
2817: if ('=' == v[*pos + 1])
2818: (*pos)++;
2819: break;
2820: default:
1.277 schwarze 2821: return 0;
1.204 schwarze 2822: }
2823: (*pos)++;
2824:
1.277 schwarze 2825: return *res;
1.204 schwarze 2826: }
2827:
2828: /*
2829: * Evaluate either a parenthesized numeric expression
2830: * or a single signed integer number.
2831: */
2832: static int
1.235 schwarze 2833: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2834: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2835: {
2836:
2837: if ('(' != v[*pos])
1.277 schwarze 2838: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2839:
2840: (*pos)++;
1.261 schwarze 2841: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2842: return 0;
1.204 schwarze 2843:
1.206 schwarze 2844: /*
2845: * Omission of the closing parenthesis
2846: * is an error in validation mode,
2847: * but ignored in evaluation mode.
2848: */
2849:
1.204 schwarze 2850: if (')' == v[*pos])
2851: (*pos)++;
1.206 schwarze 2852: else if (NULL == res)
1.277 schwarze 2853: return 0;
1.204 schwarze 2854:
1.277 schwarze 2855: return 1;
1.204 schwarze 2856: }
2857:
2858: /*
2859: * Evaluate a complete numeric expression.
2860: * Proceed left to right, there is no concept of precedence.
2861: */
2862: static int
1.235 schwarze 2863: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2864: int *pos, int *res, int flags)
1.204 schwarze 2865: {
2866: int mypos, operand2;
2867: char operator;
2868:
2869: if (NULL == pos) {
2870: mypos = 0;
2871: pos = &mypos;
2872: }
2873:
1.261 schwarze 2874: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2875: while (isspace((unsigned char)v[*pos]))
2876: (*pos)++;
2877:
1.261 schwarze 2878: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2879: return 0;
1.204 schwarze 2880:
2881: while (1) {
1.261 schwarze 2882: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2883: while (isspace((unsigned char)v[*pos]))
2884: (*pos)++;
2885:
2886: if ( ! roff_getop(v, pos, &operator))
2887: break;
2888:
1.261 schwarze 2889: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2890: while (isspace((unsigned char)v[*pos]))
2891: (*pos)++;
2892:
1.261 schwarze 2893: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2894: return 0;
1.204 schwarze 2895:
1.261 schwarze 2896: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2897: while (isspace((unsigned char)v[*pos]))
2898: (*pos)++;
1.206 schwarze 2899:
2900: if (NULL == res)
2901: continue;
1.204 schwarze 2902:
2903: switch (operator) {
1.207 schwarze 2904: case '+':
1.204 schwarze 2905: *res += operand2;
2906: break;
1.207 schwarze 2907: case '-':
1.204 schwarze 2908: *res -= operand2;
2909: break;
1.207 schwarze 2910: case '*':
1.204 schwarze 2911: *res *= operand2;
2912: break;
1.207 schwarze 2913: case '/':
1.244 schwarze 2914: if (operand2 == 0) {
1.235 schwarze 2915: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2916: ln, *pos, "%s", v);
1.234 kristaps 2917: *res = 0;
2918: break;
2919: }
1.204 schwarze 2920: *res /= operand2;
2921: break;
1.207 schwarze 2922: case '%':
1.244 schwarze 2923: if (operand2 == 0) {
2924: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2925: ln, *pos, "%s", v);
1.244 schwarze 2926: *res = 0;
2927: break;
2928: }
1.204 schwarze 2929: *res %= operand2;
2930: break;
1.207 schwarze 2931: case '<':
1.204 schwarze 2932: *res = *res < operand2;
2933: break;
1.207 schwarze 2934: case '>':
1.204 schwarze 2935: *res = *res > operand2;
2936: break;
1.207 schwarze 2937: case 'l':
1.204 schwarze 2938: *res = *res <= operand2;
2939: break;
1.207 schwarze 2940: case 'g':
1.204 schwarze 2941: *res = *res >= operand2;
2942: break;
1.207 schwarze 2943: case '=':
1.204 schwarze 2944: *res = *res == operand2;
2945: break;
1.207 schwarze 2946: case '!':
1.204 schwarze 2947: *res = *res != operand2;
2948: break;
1.207 schwarze 2949: case '&':
1.204 schwarze 2950: *res = *res && operand2;
2951: break;
1.207 schwarze 2952: case ':':
1.204 schwarze 2953: *res = *res || operand2;
2954: break;
1.207 schwarze 2955: case 'i':
1.204 schwarze 2956: if (operand2 < *res)
2957: *res = operand2;
2958: break;
1.207 schwarze 2959: case 'a':
1.204 schwarze 2960: if (operand2 > *res)
2961: *res = operand2;
2962: break;
2963: default:
2964: abort();
2965: }
2966: }
1.277 schwarze 2967: return 1;
1.204 schwarze 2968: }
2969:
1.266 schwarze 2970: /* --- register management ------------------------------------------------ */
2971:
1.180 schwarze 2972: void
1.187 schwarze 2973: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2974: {
1.327 schwarze 2975: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2976: }
2977:
2978: static void
2979: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2980: int val, char sign, int step)
1.326 schwarze 2981: {
1.180 schwarze 2982: struct roffreg *reg;
2983:
2984: /* Search for an existing register with the same name. */
2985: reg = r->regtab;
2986:
1.326 schwarze 2987: while (reg != NULL && (reg->key.sz != len ||
2988: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 2989: reg = reg->next;
1.147 kristaps 2990:
1.180 schwarze 2991: if (NULL == reg) {
2992: /* Create a new register. */
2993: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 2994: reg->key.p = mandoc_strndup(name, len);
2995: reg->key.sz = len;
1.187 schwarze 2996: reg->val = 0;
1.327 schwarze 2997: reg->step = 0;
1.180 schwarze 2998: reg->next = r->regtab;
2999: r->regtab = reg;
3000: }
3001:
1.187 schwarze 3002: if ('+' == sign)
3003: reg->val += val;
3004: else if ('-' == sign)
3005: reg->val -= val;
3006: else
3007: reg->val = val;
1.327 schwarze 3008: if (step != INT_MIN)
3009: reg->step = step;
1.147 kristaps 3010: }
3011:
1.192 schwarze 3012: /*
3013: * Handle some predefined read-only number registers.
3014: * For now, return -1 if the requested register is not predefined;
3015: * in case a predefined read-only register having the value -1
3016: * were to turn up, another special value would have to be chosen.
3017: */
3018: static int
1.273 schwarze 3019: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 3020: {
3021:
3022: switch (*name) {
1.273 schwarze 3023: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 3024: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 3025: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 3026: return 0;
1.207 schwarze 3027: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 3028: return 1;
1.207 schwarze 3029: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 3030: return 24;
1.207 schwarze 3031: case 'j': /* Always adjust left margin only. */
1.277 schwarze 3032: return 0;
1.207 schwarze 3033: case 'T': /* Some output device is always defined. */
1.277 schwarze 3034: return 1;
1.207 schwarze 3035: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 3036: return 40;
1.192 schwarze 3037: default:
1.277 schwarze 3038: return -1;
1.192 schwarze 3039: }
3040: }
3041:
1.181 schwarze 3042: int
1.326 schwarze 3043: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 3044: {
1.327 schwarze 3045: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 3046: }
3047:
3048: static int
1.327 schwarze 3049: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 3050: {
3051: struct roffreg *reg;
1.192 schwarze 3052: int val;
3053:
3054: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3055: val = roff_getregro(r, name + 1);
1.192 schwarze 3056: if (-1 != val)
1.277 schwarze 3057: return val;
1.192 schwarze 3058: }
1.181 schwarze 3059:
1.327 schwarze 3060: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 3061: if (len == reg->key.sz &&
1.327 schwarze 3062: 0 == strncmp(name, reg->key.p, len)) {
3063: switch (sign) {
3064: case '+':
3065: reg->val += reg->step;
3066: break;
3067: case '-':
3068: reg->val -= reg->step;
3069: break;
3070: default:
3071: break;
3072: }
1.277 schwarze 3073: return reg->val;
1.327 schwarze 3074: }
3075: }
1.271 schwarze 3076:
1.327 schwarze 3077: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 3078: return 0;
1.271 schwarze 3079: }
3080:
3081: static int
3082: roff_hasregn(const struct roff *r, const char *name, size_t len)
3083: {
3084: struct roffreg *reg;
3085: int val;
3086:
3087: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3088: val = roff_getregro(r, name + 1);
1.271 schwarze 3089: if (-1 != val)
1.277 schwarze 3090: return 1;
1.271 schwarze 3091: }
3092:
3093: for (reg = r->regtab; reg; reg = reg->next)
3094: if (len == reg->key.sz &&
3095: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 3096: return 1;
1.147 kristaps 3097:
1.277 schwarze 3098: return 0;
1.147 kristaps 3099: }
3100:
1.180 schwarze 3101: static void
3102: roff_freereg(struct roffreg *reg)
1.147 kristaps 3103: {
1.180 schwarze 3104: struct roffreg *old_reg;
1.147 kristaps 3105:
1.180 schwarze 3106: while (NULL != reg) {
3107: free(reg->key.p);
3108: old_reg = reg;
3109: reg = reg->next;
3110: free(old_reg);
3111: }
1.147 kristaps 3112: }
1.92 schwarze 3113:
1.340 schwarze 3114: static int
1.89 kristaps 3115: roff_nr(ROFF_ARGS)
1.83 schwarze 3116: {
1.327 schwarze 3117: char *key, *val, *step;
1.212 schwarze 3118: size_t keysz;
1.327 schwarze 3119: int iv, is, len;
1.187 schwarze 3120: char sign;
1.89 kristaps 3121:
1.238 schwarze 3122: key = val = buf->buf + pos;
3123: if (*key == '\0')
1.277 schwarze 3124: return ROFF_IGN;
1.212 schwarze 3125:
3126: keysz = roff_getname(r, &val, ln, pos);
1.363 schwarze 3127: if (key[keysz] == '\\' || key[keysz] == '\t')
1.277 schwarze 3128: return ROFF_IGN;
1.89 kristaps 3129:
1.187 schwarze 3130: sign = *val;
1.238 schwarze 3131: if (sign == '+' || sign == '-')
1.187 schwarze 3132: val++;
3133:
1.327 schwarze 3134: len = 0;
3135: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3136: return ROFF_IGN;
3137:
3138: step = val + len;
3139: while (isspace((unsigned char)*step))
3140: step++;
3141: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3142: is = INT_MIN;
1.109 kristaps 3143:
1.327 schwarze 3144: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 3145: return ROFF_IGN;
1.203 schwarze 3146: }
3147:
1.340 schwarze 3148: static int
1.203 schwarze 3149: roff_rr(ROFF_ARGS)
3150: {
3151: struct roffreg *reg, **prev;
1.212 schwarze 3152: char *name, *cp;
3153: size_t namesz;
1.203 schwarze 3154:
1.238 schwarze 3155: name = cp = buf->buf + pos;
3156: if (*name == '\0')
1.277 schwarze 3157: return ROFF_IGN;
1.212 schwarze 3158: namesz = roff_getname(r, &cp, ln, pos);
3159: name[namesz] = '\0';
1.203 schwarze 3160:
3161: prev = &r->regtab;
3162: while (1) {
3163: reg = *prev;
1.238 schwarze 3164: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 3165: break;
3166: prev = ®->next;
3167: }
1.238 schwarze 3168: if (reg != NULL) {
1.203 schwarze 3169: *prev = reg->next;
3170: free(reg->key.p);
3171: free(reg);
3172: }
1.277 schwarze 3173: return ROFF_IGN;
1.122 schwarze 3174: }
3175:
1.266 schwarze 3176: /* --- handler functions for roff requests -------------------------------- */
3177:
1.340 schwarze 3178: static int
1.122 schwarze 3179: roff_rm(ROFF_ARGS)
3180: {
3181: const char *name;
3182: char *cp;
1.212 schwarze 3183: size_t namesz;
1.122 schwarze 3184:
1.238 schwarze 3185: cp = buf->buf + pos;
3186: while (*cp != '\0') {
1.212 schwarze 3187: name = cp;
1.238 schwarze 3188: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 3189: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 3190: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.363 schwarze 3191: if (name[namesz] == '\\' || name[namesz] == '\t')
1.212 schwarze 3192: break;
1.122 schwarze 3193: }
1.277 schwarze 3194: return ROFF_IGN;
1.178 schwarze 3195: }
3196:
1.340 schwarze 3197: static int
1.178 schwarze 3198: roff_it(ROFF_ARGS)
3199: {
3200: int iv;
3201:
3202: /* Parse the number of lines. */
1.261 schwarze 3203:
3204: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.350 schwarze 3205: mandoc_msg(MANDOCERR_IT_NONUM,
3206: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 3207: return ROFF_IGN;
1.178 schwarze 3208: }
3209:
1.262 schwarze 3210: while (isspace((unsigned char)buf->buf[pos]))
3211: pos++;
3212:
3213: /*
3214: * Arm the input line trap.
3215: * Special-casing "an-trap" is an ugly workaround to cope
3216: * with DocBook stupidly fiddling with man(7) internals.
3217: */
1.261 schwarze 3218:
1.178 schwarze 3219: roffit_lines = iv;
1.262 schwarze 3220: roffit_macro = mandoc_strdup(iv != 1 ||
3221: strcmp(buf->buf + pos, "an-trap") ?
3222: buf->buf + pos : "br");
1.277 schwarze 3223: return ROFF_IGN;
1.175 schwarze 3224: }
3225:
1.340 schwarze 3226: static int
1.175 schwarze 3227: roff_Dd(ROFF_ARGS)
3228: {
1.315 schwarze 3229: int mask;
3230: enum roff_tok t, te;
1.227 schwarze 3231:
1.315 schwarze 3232: switch (tok) {
3233: case ROFF_Dd:
3234: tok = MDOC_Dd;
3235: te = MDOC_MAX;
3236: if (r->format == 0)
3237: r->format = MPARSE_MDOC;
3238: mask = MPARSE_MDOC | MPARSE_QUICK;
3239: break;
3240: case ROFF_TH:
3241: tok = MAN_TH;
3242: te = MAN_MAX;
3243: if (r->format == 0)
3244: r->format = MPARSE_MAN;
3245: mask = MPARSE_QUICK;
3246: break;
3247: default:
3248: abort();
3249: }
3250: if ((r->options & mask) == 0)
3251: for (t = tok; t < te; t++)
3252: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3253: return ROFF_CONT;
1.109 kristaps 3254: }
3255:
1.340 schwarze 3256: static int
1.109 kristaps 3257: roff_TE(ROFF_ARGS)
3258: {
1.361 schwarze 3259: r->man->flags &= ~ROFF_NONOFILL;
1.321 schwarze 3260: if (r->tbl == NULL) {
1.350 schwarze 3261: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3262: return ROFF_IGN;
3263: }
1.346 schwarze 3264: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3265: r->tbl = NULL;
1.258 schwarze 3266: free(buf->buf);
3267: buf->buf = mandoc_strdup(".sp");
3268: buf->sz = 4;
1.329 schwarze 3269: *offs = 0;
1.277 schwarze 3270: return ROFF_REPARSE;
1.258 schwarze 3271: }
1.321 schwarze 3272: r->tbl = NULL;
1.277 schwarze 3273: return ROFF_IGN;
1.112 kristaps 3274: }
3275:
1.340 schwarze 3276: static int
1.112 kristaps 3277: roff_T_(ROFF_ARGS)
3278: {
3279:
3280: if (NULL == r->tbl)
1.350 schwarze 3281: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3282: else
1.296 schwarze 3283: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3284:
1.277 schwarze 3285: return ROFF_IGN;
1.109 kristaps 3286: }
3287:
1.230 schwarze 3288: /*
3289: * Handle in-line equation delimiters.
3290: */
1.340 schwarze 3291: static int
1.238 schwarze 3292: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3293: {
1.233 schwarze 3294: char *cp1, *cp2;
3295: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3296:
1.230 schwarze 3297: /*
3298: * Outside equations, look for an opening delimiter.
3299: * If we are inside an equation, we already know it is
3300: * in-line, or this function wouldn't have been called;
3301: * so look for a closing delimiter.
3302: */
3303:
1.238 schwarze 3304: cp1 = buf->buf + pos;
1.230 schwarze 3305: cp2 = strchr(cp1, r->eqn == NULL ?
3306: r->last_eqn->odelim : r->last_eqn->cdelim);
3307: if (cp2 == NULL)
1.277 schwarze 3308: return ROFF_CONT;
1.230 schwarze 3309:
1.233 schwarze 3310: *cp2++ = '\0';
3311: bef_pr = bef_nl = aft_nl = aft_pr = "";
3312:
3313: /* Handle preceding text, protecting whitespace. */
3314:
1.238 schwarze 3315: if (*buf->buf != '\0') {
1.233 schwarze 3316: if (r->eqn == NULL)
3317: bef_pr = "\\&";
3318: bef_nl = "\n";
3319: }
3320:
3321: /*
3322: * Prepare replacing the delimiter with an equation macro
3323: * and drop leading white space from the equation.
3324: */
1.230 schwarze 3325:
1.233 schwarze 3326: if (r->eqn == NULL) {
3327: while (*cp2 == ' ')
3328: cp2++;
3329: mac = ".EQ";
3330: } else
3331: mac = ".EN";
3332:
3333: /* Handle following text, protecting whitespace. */
3334:
3335: if (*cp2 != '\0') {
3336: aft_nl = "\n";
3337: if (r->eqn != NULL)
3338: aft_pr = "\\&";
3339: }
3340:
3341: /* Do the actual replacement. */
3342:
1.238 schwarze 3343: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3344: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3345: free(buf->buf);
3346: buf->buf = cp1;
1.230 schwarze 3347:
3348: /* Toggle the in-line state of the eqn subsystem. */
3349:
3350: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3351: return ROFF_REPARSE;
1.151 kristaps 3352: }
3353:
1.340 schwarze 3354: static int
1.235 schwarze 3355: roff_EQ(ROFF_ARGS)
1.125 kristaps 3356: {
1.319 schwarze 3357: struct roff_node *n;
3358:
1.356 schwarze 3359: if (r->man->meta.macroset == MACROSET_MAN)
1.322 schwarze 3360: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3361: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3362: if (ln > r->man->last->line)
3363: n->flags |= NODE_LINE;
1.348 schwarze 3364: n->eqn = eqn_box_new();
1.319 schwarze 3365: roff_node_append(r->man, n);
3366: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3367:
1.238 schwarze 3368: assert(r->eqn == NULL);
1.319 schwarze 3369: if (r->last_eqn == NULL)
1.351 schwarze 3370: r->last_eqn = eqn_alloc();
1.319 schwarze 3371: else
3372: eqn_reset(r->last_eqn);
3373: r->eqn = r->last_eqn;
3374: r->eqn->node = n;
1.151 kristaps 3375:
1.238 schwarze 3376: if (buf->buf[pos] != '\0')
1.350 schwarze 3377: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3378: ".EQ %s", buf->buf + pos);
1.151 kristaps 3379:
1.277 schwarze 3380: return ROFF_IGN;
1.125 kristaps 3381: }
3382:
1.340 schwarze 3383: static int
1.125 kristaps 3384: roff_EN(ROFF_ARGS)
3385: {
1.319 schwarze 3386: if (r->eqn != NULL) {
3387: eqn_parse(r->eqn);
3388: r->eqn = NULL;
3389: } else
1.350 schwarze 3390: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3391: if (buf->buf[pos] != '\0')
1.350 schwarze 3392: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3393: "EN %s", buf->buf + pos);
1.277 schwarze 3394: return ROFF_IGN;
1.125 kristaps 3395: }
3396:
1.340 schwarze 3397: static int
1.109 kristaps 3398: roff_TS(ROFF_ARGS)
3399: {
1.321 schwarze 3400: if (r->tbl != NULL) {
1.350 schwarze 3401: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3402: tbl_end(r->tbl, 0);
1.115 kristaps 3403: }
1.361 schwarze 3404: r->man->flags |= ROFF_NONOFILL;
1.351 schwarze 3405: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.346 schwarze 3406: if (r->last_tbl == NULL)
1.321 schwarze 3407: r->first_tbl = r->tbl;
3408: r->last_tbl = r->tbl;
1.297 schwarze 3409: return ROFF_IGN;
3410: }
3411:
1.340 schwarze 3412: static int
1.358 schwarze 3413: roff_noarg(ROFF_ARGS)
3414: {
3415: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3416: man_breakscope(r->man, tok);
3417: if (tok == ROFF_brp)
3418: tok = ROFF_br;
3419: roff_elem_alloc(r->man, ln, ppos, tok);
3420: if (buf->buf[pos] != '\0')
3421: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3422: "%s %s", roff_name[tok], buf->buf + pos);
3423: if (tok == ROFF_nf)
3424: r->man->flags |= ROFF_NOFILL;
3425: else if (tok == ROFF_fi)
3426: r->man->flags &= ~ROFF_NOFILL;
3427: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3428: r->man->next = ROFF_NEXT_SIBLING;
3429: return ROFF_IGN;
3430: }
3431:
3432: static int
1.297 schwarze 3433: roff_onearg(ROFF_ARGS)
3434: {
3435: struct roff_node *n;
3436: char *cp;
1.305 schwarze 3437: int npos;
1.297 schwarze 3438:
1.302 schwarze 3439: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3440: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3441: tok == ROFF_ti))
1.302 schwarze 3442: man_breakscope(r->man, tok);
3443:
1.309 schwarze 3444: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3445: r->man->last = roffce_node;
3446: r->man->next = ROFF_NEXT_SIBLING;
3447: }
3448:
1.297 schwarze 3449: roff_elem_alloc(r->man, ln, ppos, tok);
3450: n = r->man->last;
3451:
3452: cp = buf->buf + pos;
3453: if (*cp != '\0') {
3454: while (*cp != '\0' && *cp != ' ')
3455: cp++;
3456: while (*cp == ' ')
3457: *cp++ = '\0';
3458: if (*cp != '\0')
1.350 schwarze 3459: mandoc_msg(MANDOCERR_ARG_EXCESS,
3460: ln, (int)(cp - buf->buf),
1.297 schwarze 3461: "%s ... %s", roff_name[tok], cp);
3462: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3463: }
3464:
1.309 schwarze 3465: if (tok == ROFF_ce || tok == ROFF_rj) {
3466: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3467: roff_word_alloc(r->man, ln, pos, "1");
3468: r->man->last->flags |= NODE_NOSRC;
3469: }
3470: npos = 0;
3471: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3472: &roffce_lines, 0) == 0) {
1.350 schwarze 3473: mandoc_msg(MANDOCERR_CE_NONUM,
3474: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3475: roffce_lines = 1;
3476: }
3477: if (roffce_lines < 1) {
3478: r->man->last = r->man->last->parent;
3479: roffce_node = NULL;
3480: roffce_lines = 0;
3481: } else
3482: roffce_node = r->man->last->parent;
3483: } else {
3484: n->flags |= NODE_VALID | NODE_ENDED;
3485: r->man->last = n;
3486: }
3487: n->flags |= NODE_LINE;
1.300 schwarze 3488: r->man->next = ROFF_NEXT_SIBLING;
3489: return ROFF_IGN;
3490: }
3491:
1.340 schwarze 3492: static int
1.300 schwarze 3493: roff_manyarg(ROFF_ARGS)
3494: {
3495: struct roff_node *n;
3496: char *sp, *ep;
3497:
3498: roff_elem_alloc(r->man, ln, ppos, tok);
3499: n = r->man->last;
3500:
3501: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3502: while (*ep != '\0' && *ep != ' ')
3503: ep++;
3504: while (*ep == ' ')
3505: *ep++ = '\0';
3506: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3507: }
3508:
3509: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3510: r->man->last = n;
3511: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3512: return ROFF_IGN;
1.251 schwarze 3513: }
3514:
1.340 schwarze 3515: static int
1.311 schwarze 3516: roff_als(ROFF_ARGS)
3517: {
3518: char *oldn, *newn, *end, *value;
3519: size_t oldsz, newsz, valsz;
3520:
3521: newn = oldn = buf->buf + pos;
3522: if (*newn == '\0')
3523: return ROFF_IGN;
3524:
3525: newsz = roff_getname(r, &oldn, ln, pos);
1.363 schwarze 3526: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.311 schwarze 3527: return ROFF_IGN;
3528:
3529: end = oldn;
3530: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3531: if (oldsz == 0)
3532: return ROFF_IGN;
3533:
1.338 schwarze 3534: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3535: (int)oldsz, oldn);
1.311 schwarze 3536: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3537: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3538: free(value);
1.364 schwarze 3539: return ROFF_IGN;
3540: }
3541:
3542: /*
3543: * The .break request only makes sense inside conditionals,
3544: * and that case is already handled in roff_cond_sub().
3545: */
3546: static int
3547: roff_break(ROFF_ARGS)
3548: {
3549: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.296 schwarze 3550: return ROFF_IGN;
1.92 schwarze 3551: }
3552:
1.340 schwarze 3553: static int
1.174 kristaps 3554: roff_cc(ROFF_ARGS)
3555: {
3556: const char *p;
3557:
1.238 schwarze 3558: p = buf->buf + pos;
1.174 kristaps 3559:
1.238 schwarze 3560: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3561: r->control = '\0';
1.174 kristaps 3562:
1.238 schwarze 3563: if (*p != '\0')
1.350 schwarze 3564: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3565: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3566:
1.341 schwarze 3567: return ROFF_IGN;
3568: }
3569:
3570: static int
3571: roff_char(ROFF_ARGS)
3572: {
3573: const char *p, *kp, *vp;
3574: size_t ksz, vsz;
3575: int font;
3576:
3577: /* Parse the character to be replaced. */
3578:
3579: kp = buf->buf + pos;
3580: p = kp + 1;
3581: if (*kp == '\0' || (*kp == '\\' &&
3582: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3583: (*p != ' ' && *p != '\0')) {
1.350 schwarze 3584: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3585: return ROFF_IGN;
3586: }
3587: ksz = p - kp;
3588: while (*p == ' ')
3589: p++;
3590:
3591: /*
3592: * If the replacement string contains a font escape sequence,
3593: * we have to restore the font at the end.
3594: */
3595:
3596: vp = p;
3597: vsz = strlen(p);
3598: font = 0;
3599: while (*p != '\0') {
3600: if (*p++ != '\\')
3601: continue;
3602: switch (mandoc_escape(&p, NULL, NULL)) {
3603: case ESCAPE_FONT:
3604: case ESCAPE_FONTROMAN:
3605: case ESCAPE_FONTITALIC:
3606: case ESCAPE_FONTBOLD:
3607: case ESCAPE_FONTBI:
1.378 schwarze 3608: case ESCAPE_FONTCR:
3609: case ESCAPE_FONTCB:
3610: case ESCAPE_FONTCI:
1.341 schwarze 3611: case ESCAPE_FONTPREV:
3612: font++;
3613: break;
3614: default:
3615: break;
3616: }
3617: }
3618: if (font > 1)
1.350 schwarze 3619: mandoc_msg(MANDOCERR_CHAR_FONT,
3620: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3621:
3622: /*
3623: * Approximate the effect of .char using the .tr tables.
3624: * XXX In groff, .char and .tr interact differently.
3625: */
3626:
3627: if (ksz == 1) {
3628: if (r->xtab == NULL)
3629: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3630: assert((unsigned int)*kp < 128);
3631: free(r->xtab[(int)*kp].p);
3632: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3633: "%s%s", vp, font ? "\fP" : "");
3634: } else {
3635: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3636: if (font)
3637: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3638: }
1.277 schwarze 3639: return ROFF_IGN;
1.174 kristaps 3640: }
3641:
1.340 schwarze 3642: static int
1.303 schwarze 3643: roff_ec(ROFF_ARGS)
3644: {
3645: const char *p;
3646:
3647: p = buf->buf + pos;
3648: if (*p == '\0')
3649: r->escape = '\\';
3650: else {
3651: r->escape = *p;
3652: if (*++p != '\0')
1.350 schwarze 3653: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3654: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3655: }
3656: return ROFF_IGN;
3657: }
3658:
1.340 schwarze 3659: static int
1.303 schwarze 3660: roff_eo(ROFF_ARGS)
3661: {
3662: r->escape = '\0';
3663: if (buf->buf[pos] != '\0')
1.350 schwarze 3664: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3665: ln, pos, "eo %s", buf->buf + pos);
1.384 schwarze 3666: return ROFF_IGN;
3667: }
3668:
3669: static int
3670: roff_mc(ROFF_ARGS)
3671: {
3672: struct roff_node *n;
3673: char *cp;
3674:
3675: /* Parse the first argument. */
3676:
3677: cp = buf->buf + pos;
3678: if (*cp != '\0')
3679: cp++;
3680: if (buf->buf[pos] == '\\') {
3681: switch (mandoc_escape((const char **)&cp, NULL, NULL)) {
3682: case ESCAPE_SPECIAL:
3683: case ESCAPE_UNICODE:
3684: case ESCAPE_NUMBERED:
3685: break;
3686: default:
3687: *cp = '\0';
3688: mandoc_msg(MANDOCERR_MC_ESC, ln, pos,
3689: "mc %s", buf->buf + pos);
3690: buf->buf[pos] = '\0';
3691: break;
3692: }
3693: }
3694:
3695: /* Ignore additional arguments. */
3696:
3697: while (*cp == ' ')
3698: *cp++ = '\0';
3699: if (*cp != '\0') {
3700: mandoc_msg(MANDOCERR_MC_DIST, ln, (int)(cp - buf->buf),
3701: "mc ... %s", cp);
3702: *cp = '\0';
3703: }
3704:
3705: /* Create the .mc node. */
3706:
3707: roff_elem_alloc(r->man, ln, ppos, tok);
3708: n = r->man->last;
3709: if (buf->buf[pos] != '\0')
3710: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
3711: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3712: r->man->last = n;
3713: r->man->next = ROFF_NEXT_SIBLING;
1.303 schwarze 3714: return ROFF_IGN;
1.330 schwarze 3715: }
3716:
1.340 schwarze 3717: static int
1.330 schwarze 3718: roff_nop(ROFF_ARGS)
3719: {
3720: while (buf->buf[pos] == ' ')
3721: pos++;
3722: *offs = pos;
3723: return ROFF_RERUN;
1.303 schwarze 3724: }
3725:
1.340 schwarze 3726: static int
1.164 kristaps 3727: roff_tr(ROFF_ARGS)
3728: {
3729: const char *p, *first, *second;
3730: size_t fsz, ssz;
3731: enum mandoc_esc esc;
3732:
1.238 schwarze 3733: p = buf->buf + pos;
1.164 kristaps 3734:
1.238 schwarze 3735: if (*p == '\0') {
1.350 schwarze 3736: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3737: return ROFF_IGN;
1.164 kristaps 3738: }
3739:
1.238 schwarze 3740: while (*p != '\0') {
1.164 kristaps 3741: fsz = ssz = 1;
3742:
3743: first = p++;
1.238 schwarze 3744: if (*first == '\\') {
1.164 kristaps 3745: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3746: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3747: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3748: (int)(p - buf->buf), "%s", first);
1.277 schwarze 3749: return ROFF_IGN;
1.164 kristaps 3750: }
3751: fsz = (size_t)(p - first);
3752: }
3753:
3754: second = p++;
1.238 schwarze 3755: if (*second == '\\') {
1.164 kristaps 3756: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3757: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3758: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3759: (int)(p - buf->buf), "%s", second);
1.277 schwarze 3760: return ROFF_IGN;
1.164 kristaps 3761: }
3762: ssz = (size_t)(p - second);
1.238 schwarze 3763: } else if (*second == '\0') {
1.350 schwarze 3764: mandoc_msg(MANDOCERR_TR_ODD, ln,
3765: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3766: second = " ";
1.165 kristaps 3767: p--;
1.164 kristaps 3768: }
3769:
1.167 kristaps 3770: if (fsz > 1) {
1.207 schwarze 3771: roff_setstrn(&r->xmbtab, first, fsz,
3772: second, ssz, 0);
1.167 kristaps 3773: continue;
3774: }
3775:
1.238 schwarze 3776: if (r->xtab == NULL)
1.207 schwarze 3777: r->xtab = mandoc_calloc(128,
3778: sizeof(struct roffstr));
1.167 kristaps 3779:
3780: free(r->xtab[(int)*first].p);
3781: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3782: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3783: }
3784:
1.277 schwarze 3785: return ROFF_IGN;
1.164 kristaps 3786: }
3787:
1.339 schwarze 3788: /*
3789: * Implementation of the .return request.
3790: * There is no need to call roff_userret() from here.
3791: * The read module will call that after rewinding the reader stack
3792: * to the place from where the current macro was called.
3793: */
1.340 schwarze 3794: static int
1.339 schwarze 3795: roff_return(ROFF_ARGS)
3796: {
3797: if (r->mstackpos >= 0)
1.340 schwarze 3798: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3799:
1.350 schwarze 3800: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3801: return ROFF_IGN;
3802: }
3803:
1.340 schwarze 3804: static int
1.306 schwarze 3805: roff_rn(ROFF_ARGS)
3806: {
3807: const char *value;
3808: char *oldn, *newn, *end;
3809: size_t oldsz, newsz;
1.315 schwarze 3810: int deftype;
1.306 schwarze 3811:
3812: oldn = newn = buf->buf + pos;
3813: if (*oldn == '\0')
3814: return ROFF_IGN;
3815:
3816: oldsz = roff_getname(r, &newn, ln, pos);
1.363 schwarze 3817: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.306 schwarze 3818: return ROFF_IGN;
3819:
3820: end = newn;
3821: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3822: if (newsz == 0)
3823: return ROFF_IGN;
3824:
1.315 schwarze 3825: deftype = ROFFDEF_ANY;
3826: value = roff_getstrn(r, oldn, oldsz, &deftype);
3827: switch (deftype) {
3828: case ROFFDEF_USER:
1.306 schwarze 3829: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3830: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3831: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3832: break;
3833: case ROFFDEF_PRE:
3834: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3835: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3836: break;
3837: case ROFFDEF_REN:
1.306 schwarze 3838: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3839: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3840: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3841: break;
3842: case ROFFDEF_STD:
1.306 schwarze 3843: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3844: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3845: break;
3846: default:
3847: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3848: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3849: break;
3850: }
1.306 schwarze 3851: return ROFF_IGN;
3852: }
3853:
1.340 schwarze 3854: static int
1.339 schwarze 3855: roff_shift(ROFF_ARGS)
3856: {
3857: struct mctx *ctx;
1.382 schwarze 3858: int argpos, levels, i;
1.339 schwarze 3859:
1.382 schwarze 3860: argpos = pos;
1.339 schwarze 3861: levels = 1;
3862: if (buf->buf[pos] != '\0' &&
3863: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 schwarze 3864: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3865: ln, pos, "shift %s", buf->buf + pos);
3866: levels = 1;
3867: }
3868: if (r->mstackpos < 0) {
1.350 schwarze 3869: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3870: return ROFF_IGN;
3871: }
3872: ctx = r->mstack + r->mstackpos;
3873: if (levels > ctx->argc) {
1.350 schwarze 3874: mandoc_msg(MANDOCERR_SHIFT,
1.382 schwarze 3875: ln, argpos, "%d, but max is %d", levels, ctx->argc);
1.339 schwarze 3876: levels = ctx->argc;
1.382 schwarze 3877: }
3878: if (levels < 0) {
3879: mandoc_msg(MANDOCERR_ARG_NEG, ln, argpos, "shift %d", levels);
3880: levels = 0;
1.339 schwarze 3881: }
3882: if (levels == 0)
3883: return ROFF_IGN;
3884: for (i = 0; i < levels; i++)
3885: free(ctx->argv[i]);
3886: ctx->argc -= levels;
3887: for (i = 0; i < ctx->argc; i++)
3888: ctx->argv[i] = ctx->argv[i + levels];
3889: return ROFF_IGN;
3890: }
3891:
1.340 schwarze 3892: static int
1.105 kristaps 3893: roff_so(ROFF_ARGS)
3894: {
1.249 schwarze 3895: char *name, *cp;
1.105 kristaps 3896:
1.238 schwarze 3897: name = buf->buf + pos;
1.350 schwarze 3898: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3899:
3900: /*
3901: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3902: * opening anything that's not in our cwd or anything beneath
3903: * it. Thus, explicitly disallow traversing up the file-system
3904: * or using absolute paths.
3905: */
3906:
1.238 schwarze 3907: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 schwarze 3908: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3909: buf->sz = mandoc_asprintf(&cp,
3910: ".sp\nSee the file %s.\n.sp", name) + 1;
3911: free(buf->buf);
3912: buf->buf = cp;
3913: *offs = 0;
1.277 schwarze 3914: return ROFF_REPARSE;
1.105 kristaps 3915: }
3916:
3917: *offs = pos;
1.277 schwarze 3918: return ROFF_SO;
1.105 kristaps 3919: }
1.92 schwarze 3920:
1.266 schwarze 3921: /* --- user defined strings and macros ------------------------------------ */
3922:
1.340 schwarze 3923: static int
1.106 kristaps 3924: roff_userdef(ROFF_ARGS)
1.99 kristaps 3925: {
1.339 schwarze 3926: struct mctx *ctx;
3927: char *arg, *ap, *dst, *src;
3928: size_t sz;
3929:
1.365 schwarze 3930: /* If the macro is empty, ignore it altogether. */
3931:
3932: if (*r->current_string == '\0')
3933: return ROFF_IGN;
3934:
1.339 schwarze 3935: /* Initialize a new macro stack context. */
3936:
3937: if (++r->mstackpos == r->mstacksz) {
3938: r->mstack = mandoc_recallocarray(r->mstack,
3939: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3940: r->mstacksz += 8;
3941: }
3942: ctx = r->mstack + r->mstackpos;
3943: ctx->argc = 0;
3944:
3945: /*
3946: * Collect pointers to macro argument strings,
3947: * NUL-terminating them and escaping quotes.
3948: */
3949:
3950: src = buf->buf + pos;
3951: while (*src != '\0') {
3952: if (ctx->argc == ctx->argsz) {
3953: ctx->argsz += 8;
3954: ctx->argv = mandoc_reallocarray(ctx->argv,
3955: ctx->argsz, sizeof(*ctx->argv));
3956: }
1.355 schwarze 3957: arg = roff_getarg(r, &src, ln, &pos);
1.339 schwarze 3958: sz = 1; /* For the terminating NUL. */
3959: for (ap = arg; *ap != '\0'; ap++)
3960: sz += *ap == '"' ? 4 : 1;
3961: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3962: for (ap = arg; *ap != '\0'; ap++) {
3963: if (*ap == '"') {
3964: memcpy(dst, "\\(dq", 4);
3965: dst += 4;
3966: } else
3967: *dst++ = *ap;
1.106 kristaps 3968: }
1.339 schwarze 3969: *dst = '\0';
1.355 schwarze 3970: free(arg);
1.337 schwarze 3971: }
3972:
1.339 schwarze 3973: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3974:
1.238 schwarze 3975: free(buf->buf);
1.339 schwarze 3976: buf->buf = mandoc_strdup(r->current_string);
3977: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3978: *offs = 0;
1.106 kristaps 3979:
1.365 schwarze 3980: return buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3981: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3982: }
1.121 schwarze 3983:
1.306 schwarze 3984: /*
3985: * Calling a high-level macro that was renamed with .rn.
3986: * r->current_string has already been set up by roff_parse().
3987: */
1.340 schwarze 3988: static int
1.306 schwarze 3989: roff_renamed(ROFF_ARGS)
3990: {
3991: char *nbuf;
3992:
1.315 schwarze 3993: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3994: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3995: free(buf->buf);
3996: buf->buf = nbuf;
1.329 schwarze 3997: *offs = 0;
1.306 schwarze 3998: return ROFF_CONT;
3999: }
4000:
1.362 schwarze 4001: /*
4002: * Measure the length in bytes of the roff identifier at *cpp
4003: * and advance the pointer to the next word.
4004: */
1.212 schwarze 4005: static size_t
1.121 schwarze 4006: roff_getname(struct roff *r, char **cpp, int ln, int pos)
4007: {
4008: char *name, *cp;
1.212 schwarze 4009: size_t namesz;
1.121 schwarze 4010:
4011: name = *cpp;
1.362 schwarze 4012: if (*name == '\0')
1.277 schwarze 4013: return 0;
1.121 schwarze 4014:
1.362 schwarze 4015: /* Advance cp to the byte after the end of the name. */
4016:
1.212 schwarze 4017: for (cp = name; 1; cp++) {
1.362 schwarze 4018: namesz = cp - name;
1.363 schwarze 4019: if (*cp == '\0')
1.212 schwarze 4020: break;
1.363 schwarze 4021: if (*cp == ' ' || *cp == '\t') {
4022: cp++;
4023: break;
4024: }
1.362 schwarze 4025: if (*cp != '\\')
1.121 schwarze 4026: continue;
1.362 schwarze 4027: if (cp[1] == '{' || cp[1] == '}')
1.215 schwarze 4028: break;
1.362 schwarze 4029: if (*++cp == '\\')
1.121 schwarze 4030: continue;
1.350 schwarze 4031: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.224 schwarze 4032: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 4033: mandoc_escape((const char **)&cp, NULL, NULL);
4034: break;
1.121 schwarze 4035: }
4036:
4037: /* Read past spaces. */
1.362 schwarze 4038:
4039: while (*cp == ' ')
1.121 schwarze 4040: cp++;
4041:
4042: *cpp = cp;
1.277 schwarze 4043: return namesz;
1.121 schwarze 4044: }
4045:
1.106 kristaps 4046: /*
4047: * Store *string into the user-defined string called *name.
4048: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 4049: * append == 0: replace mode
4050: * append == 1: single-line append mode
4051: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 4052: */
1.94 kristaps 4053: static void
1.106 kristaps 4054: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 4055: int append)
1.92 schwarze 4056: {
1.315 schwarze 4057: size_t namesz;
1.164 kristaps 4058:
1.315 schwarze 4059: namesz = strlen(name);
4060: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 4061: string ? strlen(string) : 0, append);
1.315 schwarze 4062: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 4063: }
4064:
4065: static void
1.166 kristaps 4066: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 4067: const char *string, size_t stringsz, int append)
1.164 kristaps 4068: {
1.166 kristaps 4069: struct roffkv *n;
1.164 kristaps 4070: char *c;
4071: int i;
4072: size_t oldch, newch;
1.92 schwarze 4073:
1.106 kristaps 4074: /* Search for an existing string with the same name. */
1.164 kristaps 4075: n = *r;
4076:
1.211 schwarze 4077: while (n && (namesz != n->key.sz ||
4078: strncmp(n->key.p, name, namesz)))
1.92 schwarze 4079: n = n->next;
1.94 kristaps 4080:
4081: if (NULL == n) {
1.106 kristaps 4082: /* Create a new string table entry. */
1.166 kristaps 4083: n = mandoc_malloc(sizeof(struct roffkv));
4084: n->key.p = mandoc_strndup(name, namesz);
4085: n->key.sz = namesz;
4086: n->val.p = NULL;
4087: n->val.sz = 0;
1.164 kristaps 4088: n->next = *r;
4089: *r = n;
1.193 schwarze 4090: } else if (0 == append) {
1.166 kristaps 4091: free(n->val.p);
4092: n->val.p = NULL;
4093: n->val.sz = 0;
1.106 kristaps 4094: }
4095:
4096: if (NULL == string)
4097: return;
4098:
4099: /*
4100: * One additional byte for the '\n' in multiline mode,
4101: * and one for the terminating '\0'.
4102: */
1.193 schwarze 4103: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 4104:
1.166 kristaps 4105: if (NULL == n->val.p) {
4106: n->val.p = mandoc_malloc(newch);
4107: *n->val.p = '\0';
1.106 kristaps 4108: oldch = 0;
4109: } else {
1.166 kristaps 4110: oldch = n->val.sz;
4111: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 4112: }
4113:
4114: /* Skip existing content in the destination buffer. */
1.166 kristaps 4115: c = n->val.p + (int)oldch;
1.106 kristaps 4116:
4117: /* Append new content to the destination buffer. */
1.164 kristaps 4118: i = 0;
4119: while (i < (int)stringsz) {
1.106 kristaps 4120: /*
4121: * Rudimentary roff copy mode:
4122: * Handle escaped backslashes.
4123: */
1.164 kristaps 4124: if ('\\' == string[i] && '\\' == string[i + 1])
4125: i++;
4126: *c++ = string[i++];
1.106 kristaps 4127: }
1.94 kristaps 4128:
1.106 kristaps 4129: /* Append terminating bytes. */
1.193 schwarze 4130: if (1 < append)
1.106 kristaps 4131: *c++ = '\n';
1.163 kristaps 4132:
1.106 kristaps 4133: *c = '\0';
1.166 kristaps 4134: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 4135: }
4136:
1.94 kristaps 4137: static const char *
1.325 schwarze 4138: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 4139: int *deftype)
1.92 schwarze 4140: {
1.315 schwarze 4141: const struct roffkv *n;
1.325 schwarze 4142: int found, i;
1.315 schwarze 4143: enum roff_tok tok;
4144:
1.325 schwarze 4145: found = 0;
4146: for (n = r->strtab; n != NULL; n = n->next) {
4147: if (strncmp(name, n->key.p, len) != 0 ||
4148: n->key.p[len] != '\0' || n->val.p == NULL)
4149: continue;
4150: if (*deftype & ROFFDEF_USER) {
4151: *deftype = ROFFDEF_USER;
4152: return n->val.p;
4153: } else {
4154: found = 1;
4155: break;
4156: }
4157: }
4158: for (n = r->rentab; n != NULL; n = n->next) {
4159: if (strncmp(name, n->key.p, len) != 0 ||
4160: n->key.p[len] != '\0' || n->val.p == NULL)
4161: continue;
4162: if (*deftype & ROFFDEF_REN) {
4163: *deftype = ROFFDEF_REN;
4164: return n->val.p;
4165: } else {
4166: found = 1;
4167: break;
1.315 schwarze 4168: }
4169: }
1.325 schwarze 4170: for (i = 0; i < PREDEFS_MAX; i++) {
4171: if (strncmp(name, predefs[i].name, len) != 0 ||
4172: predefs[i].name[len] != '\0')
4173: continue;
4174: if (*deftype & ROFFDEF_PRE) {
4175: *deftype = ROFFDEF_PRE;
4176: return predefs[i].str;
4177: } else {
4178: found = 1;
4179: break;
1.315 schwarze 4180: }
4181: }
1.356 schwarze 4182: if (r->man->meta.macroset != MACROSET_MAN) {
1.325 schwarze 4183: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4184: if (strncmp(name, roff_name[tok], len) != 0 ||
4185: roff_name[tok][len] != '\0')
4186: continue;
4187: if (*deftype & ROFFDEF_STD) {
4188: *deftype = ROFFDEF_STD;
4189: return NULL;
4190: } else {
4191: found = 1;
4192: break;
1.315 schwarze 4193: }
4194: }
4195: }
1.356 schwarze 4196: if (r->man->meta.macroset != MACROSET_MDOC) {
1.325 schwarze 4197: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4198: if (strncmp(name, roff_name[tok], len) != 0 ||
4199: roff_name[tok][len] != '\0')
4200: continue;
4201: if (*deftype & ROFFDEF_STD) {
4202: *deftype = ROFFDEF_STD;
4203: return NULL;
4204: } else {
4205: found = 1;
4206: break;
1.315 schwarze 4207: }
4208: }
1.325 schwarze 4209: }
4210:
4211: if (found == 0 && *deftype != ROFFDEF_ANY) {
4212: if (*deftype & ROFFDEF_REN) {
4213: /*
4214: * This might still be a request,
4215: * so do not treat it as undefined yet.
4216: */
4217: *deftype = ROFFDEF_UNDEF;
4218: return NULL;
1.315 schwarze 4219: }
1.325 schwarze 4220:
4221: /* Using an undefined string defines it to be empty. */
4222:
4223: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4224: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 4225: }
1.325 schwarze 4226:
1.315 schwarze 4227: *deftype = 0;
1.277 schwarze 4228: return NULL;
1.92 schwarze 4229: }
4230:
1.94 kristaps 4231: static void
1.167 kristaps 4232: roff_freestr(struct roffkv *r)
1.92 schwarze 4233: {
1.166 kristaps 4234: struct roffkv *n, *nn;
1.92 schwarze 4235:
1.167 kristaps 4236: for (n = r; n; n = nn) {
1.166 kristaps 4237: free(n->key.p);
4238: free(n->val.p);
1.92 schwarze 4239: nn = n->next;
4240: free(n);
4241: }
1.114 kristaps 4242: }
1.266 schwarze 4243:
4244: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 4245:
4246: /*
4247: * Duplicate an input string, making the appropriate character
4248: * conversations (as stipulated by `tr') along the way.
4249: * Returns a heap-allocated string with all the replacements made.
4250: */
4251: char *
4252: roff_strdup(const struct roff *r, const char *p)
4253: {
1.166 kristaps 4254: const struct roffkv *cp;
1.164 kristaps 4255: char *res;
4256: const char *pp;
4257: size_t ssz, sz;
4258: enum mandoc_esc esc;
4259:
1.167 kristaps 4260: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 4261: return mandoc_strdup(p);
1.164 kristaps 4262: else if ('\0' == *p)
1.277 schwarze 4263: return mandoc_strdup("");
1.164 kristaps 4264:
4265: /*
4266: * Step through each character looking for term matches
4267: * (remember that a `tr' can be invoked with an escape, which is
4268: * a glyph but the escape is multi-character).
4269: * We only do this if the character hash has been initialised
4270: * and the string is >0 length.
4271: */
4272:
4273: res = NULL;
4274: ssz = 0;
4275:
4276: while ('\0' != *p) {
1.289 schwarze 4277: assert((unsigned int)*p < 128);
4278: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 4279: sz = r->xtab[(int)*p].sz;
4280: res = mandoc_realloc(res, ssz + sz + 1);
4281: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4282: ssz += sz;
4283: p++;
4284: continue;
4285: } else if ('\\' != *p) {
4286: res = mandoc_realloc(res, ssz + 2);
4287: res[ssz++] = *p++;
4288: continue;
4289: }
4290:
1.164 kristaps 4291: /* Search for term matches. */
1.167 kristaps 4292: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4293: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4294: break;
4295:
4296: if (NULL != cp) {
4297: /*
4298: * A match has been found.
4299: * Append the match to the array and move
4300: * forward by its keysize.
4301: */
1.207 schwarze 4302: res = mandoc_realloc(res,
4303: ssz + cp->val.sz + 1);
1.166 kristaps 4304: memcpy(res + ssz, cp->val.p, cp->val.sz);
4305: ssz += cp->val.sz;
4306: p += (int)cp->key.sz;
1.164 kristaps 4307: continue;
4308: }
4309:
1.167 kristaps 4310: /*
4311: * Handle escapes carefully: we need to copy
4312: * over just the escape itself, or else we might
4313: * do replacements within the escape itself.
4314: * Make sure to pass along the bogus string.
4315: */
4316: pp = p++;
4317: esc = mandoc_escape(&p, NULL, NULL);
4318: if (ESCAPE_ERROR == esc) {
4319: sz = strlen(pp);
1.164 kristaps 4320: res = mandoc_realloc(res, ssz + sz + 1);
4321: memcpy(res + ssz, pp, sz);
1.167 kristaps 4322: break;
1.164 kristaps 4323: }
1.207 schwarze 4324: /*
4325: * We bail out on bad escapes.
1.167 kristaps 4326: * No need to warn: we already did so when
1.355 schwarze 4327: * roff_expand() was called.
1.167 kristaps 4328: */
4329: sz = (int)(p - pp);
4330: res = mandoc_realloc(res, ssz + sz + 1);
4331: memcpy(res + ssz, pp, sz);
4332: ssz += sz;
1.164 kristaps 4333: }
4334:
4335: res[(int)ssz] = '\0';
1.277 schwarze 4336: return res;
1.227 schwarze 4337: }
4338:
4339: int
4340: roff_getformat(const struct roff *r)
4341: {
4342:
1.277 schwarze 4343: return r->format;
1.174 kristaps 4344: }
4345:
4346: /*
1.207 schwarze 4347: * Find out whether a line is a macro line or not.
1.174 kristaps 4348: * If it is, adjust the current position and return one; if it isn't,
4349: * return zero and don't change the current position.
4350: * If the control character has been set with `.cc', then let that grain
4351: * precedence.
4352: * This is slighly contrary to groff, where using the non-breaking
4353: * control character when `cc' has been invoked will cause the
4354: * non-breaking macro contents to be printed verbatim.
4355: */
4356: int
4357: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4358: {
4359: int pos;
4360:
4361: pos = *ppos;
4362:
1.303 schwarze 4363: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4364: pos++;
1.303 schwarze 4365: else if (r->control != '\0')
1.277 schwarze 4366: return 0;
1.174 kristaps 4367: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4368: pos += 2;
4369: else if ('.' == cp[pos] || '\'' == cp[pos])
4370: pos++;
4371: else
1.277 schwarze 4372: return 0;
1.174 kristaps 4373:
4374: while (' ' == cp[pos] || '\t' == cp[pos])
4375: pos++;
4376:
4377: *ppos = pos;
1.277 schwarze 4378: return 1;
1.74 kristaps 4379: }
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