Annotation of mandoc/roff.c, Revision 1.394
1.394 ! schwarze 1: /* $Id: roff.c,v 1.393 2022/06/03 12:15:55 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 */
1.393 schwarze 1378: int isrc, idst; /* to reduce \\ and \. in names */
1.388 schwarze 1379: int deftype; /* type of definition to paste */
1380: int argi; /* macro argument index */
1381: int quote_args; /* true for \\$@, false for \\$* */
1382: int asz; /* length of the replacement */
1383: int rsz; /* length of the rest of the string */
1384: int npos; /* position in numeric expression */
1.181 schwarze 1385: int expand_count; /* to avoid infinite loops */
1.303 schwarze 1386:
1.170 schwarze 1387: expand_count = 0;
1.388 schwarze 1388: while (buf->buf[pos] != '\0') {
1.170 schwarze 1389:
1.388 schwarze 1390: /*
1391: * Skip plain ASCII characters.
1392: * If we have a non-standard escape character,
1393: * escape literal backslashes because all processing in
1394: * subsequent functions uses the standard escaping rules.
1395: */
1.205 schwarze 1396:
1.388 schwarze 1397: if (buf->buf[pos] != ec) {
1398: if (ec != ASCII_ESC && buf->buf[pos] == '\\') {
1399: roff_expand_patch(buf, pos, "\\e", pos + 1);
1400: pos++;
1.303 schwarze 1401: }
1.388 schwarze 1402: pos++;
1.205 schwarze 1403: continue;
1.303 schwarze 1404: }
1.205 schwarze 1405:
1.388 schwarze 1406: /*
1407: * Parse escape sequences,
1408: * issue diagnostic messages when appropriate,
1409: * and skip sequences that do not need expansion.
1410: * If we have a non-standard escape character, translate
1411: * it to backslashes and translate backslashes to \e.
1412: */
1.205 schwarze 1413:
1.392 schwarze 1414: if (roff_escape(buf->buf, ln, pos, &iesc, &inam,
1415: &iarg, &iendarg, &iend) != ESCAPE_EXPAND) {
1.388 schwarze 1416: while (pos < iend) {
1417: if (buf->buf[pos] == ec) {
1418: buf->buf[pos] = '\\';
1419: if (pos + 1 < iend)
1420: pos++;
1421: } else if (buf->buf[pos] == '\\') {
1422: roff_expand_patch(buf,
1423: pos, "\\e", pos + 1);
1424: pos++;
1425: iend++;
1426: }
1427: pos++;
1.352 schwarze 1428: }
1.205 schwarze 1429: continue;
1.152 kristaps 1430: }
1.388 schwarze 1431:
1.393 schwarze 1432: /* Reduce \\ and \. in names. */
1433:
1434: if (buf->buf[inam] == '*' || buf->buf[inam] == 'n') {
1435: isrc = idst = iarg;
1436: while (isrc < iendarg) {
1437: if (isrc + 1 < iendarg &&
1438: buf->buf[isrc] == '\\' &&
1439: (buf->buf[isrc + 1] == '\\' ||
1440: buf->buf[isrc + 1] == '.'))
1441: isrc++;
1442: buf->buf[idst++] = buf->buf[isrc++];
1443: }
1444: iendarg -= isrc - idst;
1445: }
1446:
1.388 schwarze 1447: /* Handle expansion. */
1448:
1449: res = NULL;
1450: switch (buf->buf[inam]) {
1451: case '*':
1452: if (iendarg == iarg)
1.206 schwarze 1453: break;
1.388 schwarze 1454: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1455: if ((res = roff_getstrn(r, buf->buf + iarg,
1456: iendarg - iarg, &deftype)) != NULL)
1.206 schwarze 1457: break;
1.94 kristaps 1458:
1.388 schwarze 1459: /*
1460: * If not overriden,
1461: * let \*(.T through to the formatters.
1462: */
1.94 kristaps 1463:
1.388 schwarze 1464: if (iendarg - iarg == 2 &&
1465: buf->buf[iarg] == '.' &&
1466: buf->buf[iarg + 1] == 'T') {
1467: roff_setstrn(&r->strtab, ".T", 2, NULL, 0, 0);
1468: pos = iend;
1.253 schwarze 1469: continue;
1470: }
1.94 kristaps 1471:
1.388 schwarze 1472: mandoc_msg(MANDOCERR_STR_UNDEF, ln, iesc,
1473: "%.*s", iendarg - iarg, buf->buf + iarg);
1474: break;
1.108 schwarze 1475:
1.339 schwarze 1476: case '$':
1477: if (r->mstackpos < 0) {
1.388 schwarze 1478: mandoc_msg(MANDOCERR_ARG_UNDEF, ln, iesc,
1479: "%.*s", iend - iesc, buf->buf + iesc);
1.339 schwarze 1480: break;
1481: }
1482: ctx = r->mstack + r->mstackpos;
1.388 schwarze 1483: argi = buf->buf[iarg] - '1';
1484: if (argi >= 0 && argi <= 8) {
1485: if (argi < ctx->argc)
1486: res = ctx->argv[argi];
1.339 schwarze 1487: break;
1488: }
1.388 schwarze 1489: if (buf->buf[iarg] == '*')
1.339 schwarze 1490: quote_args = 0;
1.388 schwarze 1491: else if (buf->buf[iarg] == '@')
1.339 schwarze 1492: quote_args = 1;
1493: else {
1.388 schwarze 1494: mandoc_msg(MANDOCERR_ARG_NONUM, ln, iesc,
1495: "%.*s", iend - iesc, buf->buf + iesc);
1.339 schwarze 1496: break;
1497: }
1498: asz = 0;
1.388 schwarze 1499: for (argi = 0; argi < ctx->argc; argi++) {
1500: if (argi)
1.339 schwarze 1501: asz++; /* blank */
1502: if (quote_args)
1503: asz += 2; /* quotes */
1.388 schwarze 1504: asz += strlen(ctx->argv[argi]);
1.339 schwarze 1505: }
1.388 schwarze 1506: if (asz != iend - iesc) {
1507: rsz = buf->sz - iend;
1508: if (asz < iend - iesc)
1509: memmove(buf->buf + iesc + asz,
1510: buf->buf + iend, rsz);
1511: buf->sz = iesc + asz + rsz;
1512: buf->buf = mandoc_realloc(buf->buf, buf->sz);
1513: if (asz > iend - iesc)
1514: memmove(buf->buf + iesc + asz,
1515: buf->buf + iend, rsz);
1.339 schwarze 1516: }
1.388 schwarze 1517: dst = buf->buf + iesc;
1518: for (argi = 0; argi < ctx->argc; argi++) {
1519: if (argi)
1520: *dst++ = ' ';
1.339 schwarze 1521: if (quote_args)
1.388 schwarze 1522: *dst++ = '"';
1523: src = ctx->argv[argi];
1524: while (*src != '\0')
1525: *dst++ = *src++;
1.339 schwarze 1526: if (quote_args)
1.388 schwarze 1527: *dst++ = '"';
1.339 schwarze 1528: }
1529: continue;
1.391 schwarze 1530: case 'A':
1531: ubuf[0] = iendarg > iarg ? '1' : '0';
1532: ubuf[1] = '\0';
1533: res = ubuf;
1534: break;
1.207 schwarze 1535: case 'B':
1.206 schwarze 1536: npos = 0;
1.388 schwarze 1537: ubuf[0] = iendarg > iarg && iend > iendarg &&
1538: roff_evalnum(r, ln, buf->buf + iarg, &npos,
1539: NULL, ROFFNUM_SCALE) &&
1540: npos == iendarg - iarg ? '1' : '0';
1.206 schwarze 1541: ubuf[1] = '\0';
1.388 schwarze 1542: res = ubuf;
1.206 schwarze 1543: break;
1.389 schwarze 1544: case 'V':
1545: mandoc_msg(MANDOCERR_UNSUPP, ln, iesc,
1546: "%.*s", iend - iesc, buf->buf + iesc);
1547: roff_expand_patch(buf, iendarg, "}", iend);
1548: roff_expand_patch(buf, iesc, "${", iarg);
1549: continue;
1.390 schwarze 1550: case 'g':
1551: break;
1.207 schwarze 1552: case 'n':
1.388 schwarze 1553: if (iendarg > iarg)
1.218 schwarze 1554: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.388 schwarze 1555: roff_getregn(r, buf->buf + iarg,
1556: iendarg - iarg, buf->buf[inam + 1]));
1.218 schwarze 1557: else
1558: ubuf[0] = '\0';
1.388 schwarze 1559: res = ubuf;
1.206 schwarze 1560: break;
1.207 schwarze 1561: case 'w':
1.388 schwarze 1562: (void)snprintf(ubuf, sizeof(ubuf),
1563: "%d", (iendarg - iarg) * 24);
1564: res = ubuf;
1565: break;
1566: default:
1.206 schwarze 1567: break;
1568: }
1.388 schwarze 1569: if (res == NULL)
1.142 kristaps 1570: res = "";
1.388 schwarze 1571: if (++expand_count > EXPAND_LIMIT ||
1572: buf->sz + strlen(res) > SHRT_MAX) {
1573: mandoc_msg(MANDOCERR_ROFFLOOP, ln, iesc, NULL);
1.277 schwarze 1574: return ROFF_IGN;
1.94 kristaps 1575: }
1.388 schwarze 1576: roff_expand_patch(buf, iesc, res, iend);
1577: }
1578: return ROFF_CONT;
1579: }
1.94 kristaps 1580:
1.388 schwarze 1581: /*
1582: * Replace the substring from the start position (inclusive)
1583: * to end position (exclusive) with the repl(acement) string.
1584: */
1585: static void
1586: roff_expand_patch(struct buf *buf, int start, const char *repl, int end)
1587: {
1588: char *nbuf;
1.108 schwarze 1589:
1.389 schwarze 1590: buf->sz = mandoc_asprintf(&nbuf, "%.*s%s%s", start, buf->buf,
1591: repl, buf->buf + end) + 1;
1.388 schwarze 1592: free(buf->buf);
1593: buf->buf = nbuf;
1.154 kristaps 1594: }
1.353 schwarze 1595:
1596: /*
1597: * Parse a quoted or unquoted roff-style request or macro argument.
1598: * Return a pointer to the parsed argument, which is either the original
1599: * pointer or advanced by one byte in case the argument is quoted.
1600: * NUL-terminate the argument in place.
1601: * Collapse pairs of quotes inside quoted arguments.
1602: * Advance the argument pointer to the next argument,
1603: * or to the NUL byte terminating the argument line.
1604: */
1605: char *
1.355 schwarze 1606: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.353 schwarze 1607: {
1.355 schwarze 1608: struct buf buf;
1.366 schwarze 1609: char *cp, *start;
1.355 schwarze 1610: int newesc, pairs, quoted, white;
1.353 schwarze 1611:
1612: /* Quoting can only start with a new word. */
1613: start = *cpp;
1614: quoted = 0;
1615: if ('"' == *start) {
1616: quoted = 1;
1617: start++;
1618: }
1619:
1.355 schwarze 1620: newesc = pairs = white = 0;
1.353 schwarze 1621: for (cp = start; '\0' != *cp; cp++) {
1622:
1623: /*
1624: * Move the following text left
1625: * after quoted quotes and after "\\" and "\t".
1626: */
1627: if (pairs)
1628: cp[-pairs] = cp[0];
1629:
1630: if ('\\' == cp[0]) {
1631: /*
1632: * In copy mode, translate double to single
1633: * backslashes and backslash-t to literal tabs.
1634: */
1635: switch (cp[1]) {
1636: case 'a':
1637: case 't':
1.354 schwarze 1638: cp[-pairs] = '\t';
1.355 schwarze 1639: pairs++;
1640: cp++;
1641: break;
1.353 schwarze 1642: case '\\':
1.355 schwarze 1643: newesc = 1;
1644: cp[-pairs] = ASCII_ESC;
1.353 schwarze 1645: pairs++;
1646: cp++;
1647: break;
1648: case ' ':
1649: /* Skip escaped blanks. */
1650: if (0 == quoted)
1651: cp++;
1652: break;
1653: default:
1654: break;
1655: }
1656: } else if (0 == quoted) {
1657: if (' ' == cp[0]) {
1658: /* Unescaped blanks end unquoted args. */
1659: white = 1;
1660: break;
1661: }
1662: } else if ('"' == cp[0]) {
1663: if ('"' == cp[1]) {
1664: /* Quoted quotes collapse. */
1665: pairs++;
1666: cp++;
1667: } else {
1668: /* Unquoted quotes end quoted args. */
1669: quoted = 2;
1670: break;
1671: }
1672: }
1673: }
1674:
1675: /* Quoted argument without a closing quote. */
1676: if (1 == quoted)
1677: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1678:
1679: /* NUL-terminate this argument and move to the next one. */
1680: if (pairs)
1681: cp[-pairs] = '\0';
1682: if ('\0' != *cp) {
1683: *cp++ = '\0';
1684: while (' ' == *cp)
1685: cp++;
1686: }
1687: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1688: *cpp = cp;
1689:
1690: if ('\0' == *cp && (white || ' ' == cp[-1]))
1691: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1692:
1.355 schwarze 1693: start = mandoc_strdup(start);
1694: if (newesc == 0)
1695: return start;
1696:
1697: buf.buf = start;
1698: buf.sz = strlen(start) + 1;
1699: buf.next = NULL;
1700: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1701: free(buf.buf);
1702: buf.buf = mandoc_strdup("");
1703: }
1704: return buf.buf;
1.353 schwarze 1705: }
1706:
1.154 kristaps 1707:
1708: /*
1.275 schwarze 1709: * Process text streams.
1.154 kristaps 1710: */
1.340 schwarze 1711: static int
1.305 schwarze 1712: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1713: {
1714: size_t sz;
1715: const char *start;
1.178 schwarze 1716: char *p;
1717: int isz;
1.154 kristaps 1718: enum mandoc_esc esc;
1719:
1.275 schwarze 1720: /* Spring the input line trap. */
1721:
1722: if (roffit_lines == 1) {
1723: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1724: free(buf->buf);
1725: buf->buf = p;
1726: buf->sz = isz + 1;
1727: *offs = 0;
1728: free(roffit_macro);
1729: roffit_lines = 0;
1.277 schwarze 1730: return ROFF_REPARSE;
1.275 schwarze 1731: } else if (roffit_lines > 1)
1732: --roffit_lines;
1733:
1.305 schwarze 1734: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1735: if (roffce_lines < 1) {
1736: r->man->last = roffce_node;
1737: r->man->next = ROFF_NEXT_SIBLING;
1738: roffce_lines = 0;
1739: roffce_node = NULL;
1740: } else
1741: roffce_lines--;
1742: }
1743:
1.275 schwarze 1744: /* Convert all breakable hyphens into ASCII_HYPH. */
1745:
1.238 schwarze 1746: start = p = buf->buf + pos;
1.154 kristaps 1747:
1.238 schwarze 1748: while (*p != '\0') {
1.154 kristaps 1749: sz = strcspn(p, "-\\");
1750: p += sz;
1751:
1.238 schwarze 1752: if (*p == '\0')
1.159 kristaps 1753: break;
1754:
1.238 schwarze 1755: if (*p == '\\') {
1.154 kristaps 1756: /* Skip over escapes. */
1757: p++;
1.189 schwarze 1758: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1759: if (esc == ESCAPE_ERROR)
1.154 kristaps 1760: break;
1.264 schwarze 1761: while (*p == '-')
1762: p++;
1.155 kristaps 1763: continue;
1.159 kristaps 1764: } else if (p == start) {
1.158 kristaps 1765: p++;
1.155 kristaps 1766: continue;
1.158 kristaps 1767: }
1.155 kristaps 1768:
1.171 schwarze 1769: if (isalpha((unsigned char)p[-1]) &&
1770: isalpha((unsigned char)p[1]))
1.155 kristaps 1771: *p = ASCII_HYPH;
1772: p++;
1.94 kristaps 1773: }
1.277 schwarze 1774: return ROFF_CONT;
1.94 kristaps 1775: }
1776:
1.340 schwarze 1777: int
1.377 schwarze 1778: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs, size_t len)
1.67 kristaps 1779: {
1.294 schwarze 1780: enum roff_tok t;
1.340 schwarze 1781: int e;
1.238 schwarze 1782: int pos; /* parse point */
1.243 schwarze 1783: int spos; /* saved parse point for messages */
1.238 schwarze 1784: int ppos; /* original offset in buf->buf */
1785: int ctl; /* macro line (boolean) */
1786:
1787: ppos = pos = *offs;
1.377 schwarze 1788:
1789: if (len > 80 && r->tbl == NULL && r->eqn == NULL &&
1790: (r->man->flags & ROFF_NOFILL) == 0 &&
1791: strchr(" .\\", buf->buf[pos]) == NULL &&
1792: buf->buf[pos] != r->control &&
1793: strcspn(buf->buf, " ") < 80)
1794: mandoc_msg(MANDOCERR_TEXT_LONG, ln, (int)len - 1,
1795: "%.20s...", buf->buf + pos);
1.79 kristaps 1796:
1.230 schwarze 1797: /* Handle in-line equation delimiters. */
1798:
1.236 schwarze 1799: if (r->tbl == NULL &&
1800: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1801: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1802: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1803: if (e == ROFF_REPARSE)
1.277 schwarze 1804: return e;
1.230 schwarze 1805: assert(e == ROFF_CONT);
1806: }
1807:
1.387 schwarze 1808: /* Handle comments and escape sequences. */
1809:
1810: e = roff_parse_comment(r, buf, ln, pos, r->escape);
1811: if ((e & ROFF_MASK) == ROFF_IGN)
1812: return e;
1813: assert(e == ROFF_CONT);
1.94 kristaps 1814:
1.355 schwarze 1815: e = roff_expand(r, buf, ln, pos, r->escape);
1.340 schwarze 1816: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1817: return e;
1.238 schwarze 1818: assert(e == ROFF_CONT);
1.94 kristaps 1819:
1.238 schwarze 1820: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1821:
1.94 kristaps 1822: /*
1.79 kristaps 1823: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1824: * text through the macro's filter.
1825: * Equations process all content themselves.
1826: * Tables process almost all content themselves, but we want
1827: * to warn about macros before passing it there.
1.79 kristaps 1828: */
1.74 kristaps 1829:
1.252 schwarze 1830: if (r->last != NULL && ! ctl) {
1.78 kristaps 1831: t = r->last->tok;
1.238 schwarze 1832: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1833: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1834: return e;
1.340 schwarze 1835: e &= ~ROFF_MASK;
1836: } else
1837: e = ROFF_IGN;
1.319 schwarze 1838: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1839: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1840: return e;
1.319 schwarze 1841: }
1.321 schwarze 1842: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1843: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1844: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1845: return e;
1.321 schwarze 1846: }
1.367 schwarze 1847: if ( ! ctl) {
1848: r->options &= ~MPARSE_COMMENT;
1.340 schwarze 1849: return roff_parsetext(r, buf, pos, offs) | e;
1.367 schwarze 1850: }
1.228 schwarze 1851:
1852: /* Skip empty request lines. */
1853:
1.238 schwarze 1854: if (buf->buf[pos] == '"') {
1.350 schwarze 1855: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1856: return ROFF_IGN;
1.238 schwarze 1857: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1858: return ROFF_IGN;
1.67 kristaps 1859:
1.79 kristaps 1860: /*
1861: * If a scope is open, go to the child handler for that macro,
1862: * as it may want to preprocess before doing anything with it.
1863: */
1.78 kristaps 1864:
1.79 kristaps 1865: if (r->last) {
1866: t = r->last->tok;
1.277 schwarze 1867: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1868: }
1.78 kristaps 1869:
1.367 schwarze 1870: r->options &= ~MPARSE_COMMENT;
1.243 schwarze 1871: spos = pos;
1872: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.386 schwarze 1873: return roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1874: }
1875:
1876: /*
1877: * Handle a new request or macro.
1878: * May be called outside any scope or from inside a conditional scope.
1879: */
1880: static int
1881: roff_req_or_macro(ROFF_ARGS) {
1.243 schwarze 1882:
1.386 schwarze 1883: /* For now, tables ignore most macros and some request. */
1.243 schwarze 1884:
1.386 schwarze 1885: if (r->tbl != NULL && (tok == TOKEN_NONE || tok == ROFF_TS ||
1886: tok == ROFF_br || tok == ROFF_ce || tok == ROFF_rj ||
1887: tok == ROFF_sp)) {
1.350 schwarze 1888: mandoc_msg(MANDOCERR_TBLMACRO,
1.386 schwarze 1889: ln, ppos, "%s", buf->buf + ppos);
1890: if (tok != TOKEN_NONE)
1.277 schwarze 1891: return ROFF_IGN;
1.257 schwarze 1892: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1893: pos++;
1.291 schwarze 1894: while (buf->buf[pos] == ' ')
1.257 schwarze 1895: pos++;
1.321 schwarze 1896: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1897: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1898: return ROFF_IGN;
1.243 schwarze 1899: }
1900:
1.305 schwarze 1901: /* For now, let high level macros abort .ce mode. */
1902:
1.386 schwarze 1903: if (roffce_node != NULL &&
1904: (tok == TOKEN_NONE || tok == ROFF_Dd || tok == ROFF_EQ ||
1905: tok == ROFF_TH || tok == ROFF_TS)) {
1.305 schwarze 1906: r->man->last = roffce_node;
1907: r->man->next = ROFF_NEXT_SIBLING;
1908: roffce_lines = 0;
1909: roffce_node = NULL;
1910: }
1911:
1.79 kristaps 1912: /*
1.243 schwarze 1913: * This is neither a roff request nor a user-defined macro.
1914: * Let the standard macro set parsers handle it.
1.79 kristaps 1915: */
1.67 kristaps 1916:
1.386 schwarze 1917: if (tok == TOKEN_NONE)
1.277 schwarze 1918: return ROFF_CONT;
1.243 schwarze 1919:
1.386 schwarze 1920: /* Execute a roff request or a user-defined macro. */
1.67 kristaps 1921:
1.386 schwarze 1922: return (*roffs[tok].proc)(r, tok, buf, ln, ppos, pos, offs);
1.74 kristaps 1923: }
1924:
1.339 schwarze 1925: /*
1926: * Internal interface function to tell the roff parser that execution
1927: * of the current macro ended. This is required because macro
1928: * definitions usually do not end with a .return request.
1929: */
1930: void
1931: roff_userret(struct roff *r)
1932: {
1933: struct mctx *ctx;
1934: int i;
1935:
1936: assert(r->mstackpos >= 0);
1937: ctx = r->mstack + r->mstackpos;
1938: for (i = 0; i < ctx->argc; i++)
1939: free(ctx->argv[i]);
1940: ctx->argc = 0;
1941: r->mstackpos--;
1942: }
1943:
1.117 kristaps 1944: void
1.74 kristaps 1945: roff_endparse(struct roff *r)
1946: {
1.321 schwarze 1947: if (r->last != NULL)
1.350 schwarze 1948: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1949: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 1950:
1.321 schwarze 1951: if (r->eqn != NULL) {
1.350 schwarze 1952: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 1953: r->eqn->node->line, r->eqn->node->pos, "EQ");
1954: eqn_parse(r->eqn);
1955: r->eqn = NULL;
1.125 kristaps 1956: }
1957:
1.321 schwarze 1958: if (r->tbl != NULL) {
1.346 schwarze 1959: tbl_end(r->tbl, 1);
1.321 schwarze 1960: r->tbl = NULL;
1.117 kristaps 1961: }
1.67 kristaps 1962: }
1963:
1964: /*
1.386 schwarze 1965: * Parse the request or macro name at buf[*pos].
1966: * Return ROFF_RENAMED, ROFF_USERDEF, or a ROFF_* token value.
1967: * For empty, undefined, mdoc(7), and man(7) macros, return TOKEN_NONE.
1968: * As a side effect, set r->current_string to the definition or to NULL.
1.67 kristaps 1969: */
1.294 schwarze 1970: static enum roff_tok
1.214 schwarze 1971: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1972: {
1.214 schwarze 1973: char *cp;
1.106 kristaps 1974: const char *mac;
1975: size_t maclen;
1.315 schwarze 1976: int deftype;
1.294 schwarze 1977: enum roff_tok t;
1.67 kristaps 1978:
1.214 schwarze 1979: cp = buf + *pos;
1980:
1981: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1982: return TOKEN_NONE;
1.67 kristaps 1983:
1.214 schwarze 1984: mac = cp;
1985: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1986:
1.315 schwarze 1987: deftype = ROFFDEF_USER | ROFFDEF_REN;
1988: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1989: switch (deftype) {
1990: case ROFFDEF_USER:
1991: t = ROFF_USERDEF;
1992: break;
1993: case ROFFDEF_REN:
1994: t = ROFF_RENAMED;
1995: break;
1996: default:
1997: t = roffhash_find(r->reqtab, mac, maclen);
1998: break;
1999: }
1.294 schwarze 2000: if (t != TOKEN_NONE)
1.214 schwarze 2001: *pos = cp - buf;
1.325 schwarze 2002: else if (deftype == ROFFDEF_UNDEF) {
2003: /* Using an undefined macro defines it to be empty. */
2004: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
2005: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
2006: }
1.277 schwarze 2007: return t;
1.67 kristaps 2008: }
2009:
1.266 schwarze 2010: /* --- handling of request blocks ----------------------------------------- */
2011:
1.375 schwarze 2012: /*
2013: * Close a macro definition block or an "ignore" block.
2014: */
1.340 schwarze 2015: static int
1.76 kristaps 2016: roff_cblock(ROFF_ARGS)
1.67 kristaps 2017: {
1.375 schwarze 2018: int rr;
1.79 kristaps 2019:
1.238 schwarze 2020: if (r->last == NULL) {
1.350 schwarze 2021: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2022: return ROFF_IGN;
1.76 kristaps 2023: }
1.67 kristaps 2024:
1.81 kristaps 2025: switch (r->last->tok) {
1.207 schwarze 2026: case ROFF_am:
2027: case ROFF_ami:
2028: case ROFF_de:
2029: case ROFF_dei:
2030: case ROFF_ig:
1.81 kristaps 2031: break;
1.375 schwarze 2032: case ROFF_am1:
2033: case ROFF_de1:
2034: /* Remapped in roff_block(). */
2035: abort();
1.81 kristaps 2036: default:
1.350 schwarze 2037: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2038: return ROFF_IGN;
1.76 kristaps 2039: }
1.67 kristaps 2040:
1.375 schwarze 2041: roffnode_pop(r);
2042: roffnode_cleanscope(r);
2043:
2044: /*
2045: * If a conditional block with braces is still open,
2046: * check for "\}" block end markers.
2047: */
2048:
2049: if (r->last != NULL && r->last->endspan < 0) {
2050: rr = 1; /* If arguments follow "\}", warn about them. */
2051: roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
2052: }
2053:
1.238 schwarze 2054: if (buf->buf[pos] != '\0')
1.350 schwarze 2055: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 2056: ".. %s", buf->buf + pos);
1.71 kristaps 2057:
1.277 schwarze 2058: return ROFF_IGN;
1.67 kristaps 2059: }
2060:
1.364 schwarze 2061: /*
2062: * Pop all nodes ending at the end of the current input line.
2063: * Return the number of loops ended.
2064: */
1.340 schwarze 2065: static int
1.76 kristaps 2066: roffnode_cleanscope(struct roff *r)
1.67 kristaps 2067: {
1.340 schwarze 2068: int inloop;
1.67 kristaps 2069:
1.340 schwarze 2070: inloop = 0;
1.375 schwarze 2071: while (r->last != NULL && r->last->endspan > 0) {
1.173 schwarze 2072: if (--r->last->endspan != 0)
1.76 kristaps 2073: break;
1.340 schwarze 2074: inloop += roffnode_pop(r);
1.76 kristaps 2075: }
1.340 schwarze 2076: return inloop;
1.67 kristaps 2077: }
2078:
1.364 schwarze 2079: /*
1.375 schwarze 2080: * Handle the closing "\}" of a conditional block.
1.364 schwarze 2081: * Apart from generating warnings, this only pops nodes.
2082: * Return the number of loops ended.
2083: */
1.340 schwarze 2084: static int
1.195 schwarze 2085: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 2086: {
1.76 kristaps 2087: if (NULL == r->last) {
1.350 schwarze 2088: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2089: return 0;
1.76 kristaps 2090: }
2091:
1.82 kristaps 2092: switch (r->last->tok) {
1.207 schwarze 2093: case ROFF_el:
2094: case ROFF_ie:
2095: case ROFF_if:
1.340 schwarze 2096: case ROFF_while:
1.82 kristaps 2097: break;
2098: default:
1.350 schwarze 2099: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2100: return 0;
1.75 kristaps 2101: }
2102:
1.76 kristaps 2103: if (r->last->endspan > -1) {
1.350 schwarze 2104: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2105: return 0;
1.76 kristaps 2106: }
2107:
1.340 schwarze 2108: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 2109: }
2110:
1.340 schwarze 2111: static int
1.80 kristaps 2112: roff_block(ROFF_ARGS)
1.76 kristaps 2113: {
1.315 schwarze 2114: const char *name, *value;
2115: char *call, *cp, *iname, *rname;
2116: size_t csz, namesz, rsz;
2117: int deftype;
1.106 kristaps 2118:
1.220 schwarze 2119: /* Ignore groff compatibility mode for now. */
1.76 kristaps 2120:
1.238 schwarze 2121: if (tok == ROFF_de1)
1.220 schwarze 2122: tok = ROFF_de;
1.251 schwarze 2123: else if (tok == ROFF_dei1)
2124: tok = ROFF_dei;
1.238 schwarze 2125: else if (tok == ROFF_am1)
1.220 schwarze 2126: tok = ROFF_am;
1.251 schwarze 2127: else if (tok == ROFF_ami1)
2128: tok = ROFF_ami;
1.220 schwarze 2129:
2130: /* Parse the macro name argument. */
2131:
1.238 schwarze 2132: cp = buf->buf + pos;
2133: if (tok == ROFF_ig) {
1.220 schwarze 2134: iname = NULL;
2135: namesz = 0;
2136: } else {
2137: iname = cp;
2138: namesz = roff_getname(r, &cp, ln, ppos);
2139: iname[namesz] = '\0';
2140: }
1.107 kristaps 2141:
1.220 schwarze 2142: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 2143:
1.238 schwarze 2144: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2145: deftype = ROFFDEF_USER;
2146: name = roff_getstrn(r, iname, namesz, &deftype);
2147: if (name == NULL) {
1.350 schwarze 2148: mandoc_msg(MANDOCERR_STR_UNDEF,
2149: ln, (int)(iname - buf->buf),
1.220 schwarze 2150: "%.*s", (int)namesz, iname);
2151: namesz = 0;
2152: } else
2153: namesz = strlen(name);
2154: } else
2155: name = iname;
1.107 kristaps 2156:
1.238 schwarze 2157: if (namesz == 0 && tok != ROFF_ig) {
1.350 schwarze 2158: mandoc_msg(MANDOCERR_REQ_EMPTY,
2159: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2160: return ROFF_IGN;
1.220 schwarze 2161: }
1.80 kristaps 2162:
1.106 kristaps 2163: roffnode_push(r, tok, name, ln, ppos);
2164:
2165: /*
2166: * At the beginning of a `de' macro, clear the existing string
2167: * with the same name, if there is one. New content will be
1.193 schwarze 2168: * appended from roff_block_text() in multiline mode.
1.106 kristaps 2169: */
1.107 kristaps 2170:
1.311 schwarze 2171: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 2172: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 2173: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 2174: } else if (tok == ROFF_am || tok == ROFF_ami) {
2175: deftype = ROFFDEF_ANY;
2176: value = roff_getstrn(r, iname, namesz, &deftype);
2177: switch (deftype) { /* Before appending, ... */
2178: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2179: roff_setstrn(&r->strtab, name, namesz,
2180: value, strlen(value), 0);
2181: break;
2182: case ROFFDEF_REN: /* call original standard macro. */
2183: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2184: (int)strlen(value), value);
2185: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2186: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2187: free(call);
2188: break;
2189: case ROFFDEF_STD: /* rename and call standard macro. */
2190: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2191: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2192: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2193: (int)rsz, rname);
2194: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2195: free(call);
2196: free(rname);
2197: break;
2198: default:
2199: break;
2200: }
1.311 schwarze 2201: }
1.76 kristaps 2202:
1.238 schwarze 2203: if (*cp == '\0')
1.277 schwarze 2204: return ROFF_IGN;
1.78 kristaps 2205:
1.220 schwarze 2206: /* Get the custom end marker. */
1.107 kristaps 2207:
1.220 schwarze 2208: iname = cp;
1.213 schwarze 2209: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 2210:
2211: /* Resolve the end marker if it is indirect. */
2212:
1.238 schwarze 2213: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2214: deftype = ROFFDEF_USER;
2215: name = roff_getstrn(r, iname, namesz, &deftype);
2216: if (name == NULL) {
1.350 schwarze 2217: mandoc_msg(MANDOCERR_STR_UNDEF,
2218: ln, (int)(iname - buf->buf),
1.220 schwarze 2219: "%.*s", (int)namesz, iname);
2220: namesz = 0;
2221: } else
2222: namesz = strlen(name);
2223: } else
2224: name = iname;
2225:
1.213 schwarze 2226: if (namesz)
2227: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2228:
1.238 schwarze 2229: if (*cp != '\0')
1.350 schwarze 2230: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2231: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2232:
1.277 schwarze 2233: return ROFF_IGN;
1.78 kristaps 2234: }
2235:
1.340 schwarze 2236: static int
1.80 kristaps 2237: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2238: {
1.294 schwarze 2239: enum roff_tok t;
1.79 kristaps 2240: int i, j;
2241:
2242: /*
1.385 schwarze 2243: * If a custom end marker is a user-defined or predefined macro
2244: * or a request, interpret it.
1.79 kristaps 2245: */
2246:
2247: if (r->last->end) {
1.130 kristaps 2248: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2249: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2250: break;
2251:
1.238 schwarze 2252: if (r->last->end[j] == '\0' &&
2253: (buf->buf[i] == '\0' ||
2254: buf->buf[i] == ' ' ||
2255: buf->buf[i] == '\t')) {
1.79 kristaps 2256: roffnode_pop(r);
2257: roffnode_cleanscope(r);
2258:
1.238 schwarze 2259: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2260: i++;
2261:
2262: pos = i;
1.238 schwarze 2263: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2264: TOKEN_NONE)
1.277 schwarze 2265: return ROFF_RERUN;
2266: return ROFF_IGN;
1.79 kristaps 2267: }
2268: }
2269:
1.385 schwarze 2270: /* Handle the standard end marker. */
1.79 kristaps 2271:
1.238 schwarze 2272: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.385 schwarze 2273: if (t == ROFF_cblock)
2274: return roff_cblock(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2275:
1.385 schwarze 2276: /* Not an end marker, so append the line to the block. */
1.79 kristaps 2277:
1.385 schwarze 2278: if (tok != ROFF_ig)
2279: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
2280: return ROFF_IGN;
1.79 kristaps 2281: }
2282:
1.340 schwarze 2283: static int
1.80 kristaps 2284: roff_block_text(ROFF_ARGS)
1.78 kristaps 2285: {
2286:
1.238 schwarze 2287: if (tok != ROFF_ig)
2288: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2289:
1.277 schwarze 2290: return ROFF_IGN;
1.78 kristaps 2291: }
2292:
1.375 schwarze 2293: /*
2294: * Check for a closing "\}" and handle it.
2295: * In this function, the final "int *offs" argument is used for
2296: * different purposes than elsewhere:
2297: * Input: *offs == 0: caller wants to discard arguments following \}
2298: * *offs == 1: caller wants to preserve text following \}
2299: * Output: *offs = 0: tell caller to discard input line
2300: * *offs = 1: tell caller to use input line
2301: */
1.340 schwarze 2302: static int
1.375 schwarze 2303: roff_cond_checkend(ROFF_ARGS)
1.82 kristaps 2304: {
1.340 schwarze 2305: char *ep;
2306: int endloop, irc, rr;
1.82 kristaps 2307:
1.340 schwarze 2308: irc = ROFF_IGN;
1.82 kristaps 2309: rr = r->last->rule;
1.340 schwarze 2310: endloop = tok != ROFF_while ? ROFF_IGN :
2311: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2312: if (roffnode_cleanscope(r))
2313: irc |= endloop;
1.144 kristaps 2314:
1.196 schwarze 2315: /*
1.375 schwarze 2316: * If "\}" occurs on a macro line without a preceding macro or
2317: * a text line contains nothing else, drop the line completely.
1.196 schwarze 2318: */
2319:
1.238 schwarze 2320: ep = buf->buf + pos;
1.375 schwarze 2321: if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))
1.198 schwarze 2322: rr = 0;
1.196 schwarze 2323:
1.343 schwarze 2324: /*
1.375 schwarze 2325: * The closing delimiter "\}" rewinds the conditional scope
1.343 schwarze 2326: * but is otherwise ignored when interpreting the line.
2327: */
1.144 kristaps 2328:
1.238 schwarze 2329: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2330: switch (ep[1]) {
2331: case '}':
1.376 schwarze 2332: if (ep[2] == '\0')
2333: ep[0] = '\0';
2334: else if (rr)
1.375 schwarze 2335: ep[1] = '&';
2336: else
2337: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2338: if (roff_ccond(r, ln, ep - buf->buf))
2339: irc |= endloop;
1.318 schwarze 2340: break;
2341: case '\0':
2342: ++ep;
2343: break;
2344: default:
2345: ep += 2;
2346: break;
1.197 schwarze 2347: }
1.177 schwarze 2348: }
1.375 schwarze 2349: *offs = rr;
2350: return irc;
2351: }
1.318 schwarze 2352:
1.375 schwarze 2353: /*
2354: * Parse and process a request or macro line in conditional scope.
2355: */
2356: static int
2357: roff_cond_sub(ROFF_ARGS)
2358: {
2359: struct roffnode *bl;
1.386 schwarze 2360: int irc, rr, spos;
1.375 schwarze 2361: enum roff_tok t;
2362:
2363: rr = 0; /* If arguments follow "\}", skip them. */
2364: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.386 schwarze 2365: spos = pos;
1.368 schwarze 2366: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2367:
1.318 schwarze 2368: /*
1.386 schwarze 2369: * Handle requests and macros if the conditional evaluated
2370: * to true or if they are structurally required.
2371: * The .break request is always handled specially.
1.318 schwarze 2372: */
2373:
1.364 schwarze 2374: if (t == ROFF_break) {
2375: if (irc & ROFF_LOOPMASK)
2376: irc = ROFF_IGN | ROFF_LOOPEXIT;
2377: else if (rr) {
2378: for (bl = r->last; bl != NULL; bl = bl->parent) {
2379: bl->rule = 0;
2380: if (bl->tok == ROFF_while)
2381: break;
2382: }
2383: }
1.386 schwarze 2384: } else if (rr || (t < TOKEN_NONE && roffs[t].flags & ROFFMAC_STRUCT)) {
2385: irc |= roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1.383 schwarze 2386: if (irc & ROFF_WHILE)
2387: irc &= ~(ROFF_LOOPCONT | ROFF_LOOPEXIT);
1.386 schwarze 2388: }
1.340 schwarze 2389: return irc;
1.82 kristaps 2390: }
2391:
1.375 schwarze 2392: /*
2393: * Parse and process a text line in conditional scope.
2394: */
1.340 schwarze 2395: static int
1.82 kristaps 2396: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2397: {
1.375 schwarze 2398: int irc, rr;
1.343 schwarze 2399:
1.375 schwarze 2400: rr = 1; /* If arguments follow "\}", preserve them. */
2401: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.340 schwarze 2402: if (rr)
2403: irc |= ROFF_CONT;
2404: return irc;
1.74 kristaps 2405: }
2406:
1.266 schwarze 2407: /* --- handling of numeric and conditional expressions -------------------- */
2408:
1.204 schwarze 2409: /*
2410: * Parse a single signed integer number. Stop at the first non-digit.
2411: * If there is at least one digit, return success and advance the
2412: * parse point, else return failure and let the parse point unchanged.
2413: * Ignore overflows, treat them just like the C language.
2414: */
1.184 schwarze 2415: static int
1.261 schwarze 2416: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2417: {
1.261 schwarze 2418: int myres, scaled, n, p;
1.206 schwarze 2419:
2420: if (NULL == res)
2421: res = &myres;
1.184 schwarze 2422:
2423: p = *pos;
2424: n = v[p] == '-';
1.261 schwarze 2425: if (n || v[p] == '+')
1.184 schwarze 2426: p++;
2427:
1.261 schwarze 2428: if (flags & ROFFNUM_WHITE)
2429: while (isspace((unsigned char)v[p]))
2430: p++;
2431:
1.184 schwarze 2432: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2433: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2434: if (p == *pos + n)
2435: return 0;
2436:
2437: if (n)
2438: *res = -*res;
2439:
1.254 schwarze 2440: /* Each number may be followed by one optional scaling unit. */
2441:
2442: switch (v[p]) {
2443: case 'f':
1.261 schwarze 2444: scaled = *res * 65536;
1.254 schwarze 2445: break;
2446: case 'i':
1.261 schwarze 2447: scaled = *res * 240;
1.254 schwarze 2448: break;
2449: case 'c':
1.261 schwarze 2450: scaled = *res * 240 / 2.54;
1.254 schwarze 2451: break;
2452: case 'v':
2453: case 'P':
1.261 schwarze 2454: scaled = *res * 40;
1.254 schwarze 2455: break;
2456: case 'm':
2457: case 'n':
1.261 schwarze 2458: scaled = *res * 24;
1.254 schwarze 2459: break;
2460: case 'p':
1.261 schwarze 2461: scaled = *res * 10 / 3;
1.254 schwarze 2462: break;
2463: case 'u':
1.261 schwarze 2464: scaled = *res;
1.254 schwarze 2465: break;
2466: case 'M':
1.261 schwarze 2467: scaled = *res * 6 / 25;
1.254 schwarze 2468: break;
2469: default:
1.261 schwarze 2470: scaled = *res;
1.254 schwarze 2471: p--;
2472: break;
2473: }
1.261 schwarze 2474: if (flags & ROFFNUM_SCALE)
2475: *res = scaled;
1.254 schwarze 2476:
2477: *pos = p + 1;
1.277 schwarze 2478: return 1;
1.184 schwarze 2479: }
2480:
1.198 schwarze 2481: /*
2482: * Evaluate a string comparison condition.
2483: * The first character is the delimiter.
2484: * Succeed if the string up to its second occurrence
2485: * matches the string up to its third occurence.
2486: * Advance the cursor after the third occurrence
2487: * or lacking that, to the end of the line.
2488: */
2489: static int
2490: roff_evalstrcond(const char *v, int *pos)
2491: {
2492: const char *s1, *s2, *s3;
2493: int match;
2494:
2495: match = 0;
2496: s1 = v + *pos; /* initial delimiter */
2497: s2 = s1 + 1; /* for scanning the first string */
2498: s3 = strchr(s2, *s1); /* for scanning the second string */
2499:
2500: if (NULL == s3) /* found no middle delimiter */
2501: goto out;
2502:
2503: while ('\0' != *++s3) {
2504: if (*s2 != *s3) { /* mismatch */
2505: s3 = strchr(s3, *s1);
2506: break;
2507: }
2508: if (*s3 == *s1) { /* found the final delimiter */
2509: match = 1;
2510: break;
2511: }
2512: s2++;
2513: }
2514:
2515: out:
2516: if (NULL == s3)
2517: s3 = strchr(s2, '\0');
1.242 schwarze 2518: else if (*s3 != '\0')
1.198 schwarze 2519: s3++;
2520: *pos = s3 - v;
1.277 schwarze 2521: return match;
1.198 schwarze 2522: }
2523:
1.204 schwarze 2524: /*
2525: * Evaluate an optionally negated single character, numerical,
2526: * or string condition.
2527: */
1.198 schwarze 2528: static int
1.271 schwarze 2529: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2530: {
1.336 schwarze 2531: const char *start, *end;
2532: char *cp, *name;
2533: size_t sz;
2534: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2535:
1.198 schwarze 2536: if ('!' == v[*pos]) {
2537: wanttrue = 0;
2538: (*pos)++;
2539: } else
2540: wanttrue = 1;
2541:
1.88 kristaps 2542: switch (v[*pos]) {
1.240 schwarze 2543: case '\0':
1.277 schwarze 2544: return 0;
1.207 schwarze 2545: case 'n':
2546: case 'o':
1.88 kristaps 2547: (*pos)++;
1.277 schwarze 2548: return wanttrue;
1.207 schwarze 2549: case 'e':
2550: case 't':
1.239 schwarze 2551: case 'v':
1.88 kristaps 2552: (*pos)++;
1.277 schwarze 2553: return !wanttrue;
1.336 schwarze 2554: case 'c':
2555: do {
2556: (*pos)++;
2557: } while (v[*pos] == ' ');
2558:
2559: /*
2560: * Quirk for groff compatibility:
2561: * The horizontal tab is neither available nor unavailable.
2562: */
2563:
2564: if (v[*pos] == '\t') {
2565: (*pos)++;
2566: return 0;
2567: }
2568:
2569: /* Printable ASCII characters are available. */
2570:
2571: if (v[*pos] != '\\') {
2572: (*pos)++;
2573: return wanttrue;
2574: }
2575:
2576: end = v + ++*pos;
2577: switch (mandoc_escape(&end, &start, &len)) {
2578: case ESCAPE_SPECIAL:
2579: istrue = mchars_spec2cp(start, len) != -1;
2580: break;
2581: case ESCAPE_UNICODE:
2582: istrue = 1;
2583: break;
2584: case ESCAPE_NUMBERED:
2585: istrue = mchars_num2char(start, len) != -1;
2586: break;
2587: default:
2588: istrue = !wanttrue;
2589: break;
2590: }
2591: *pos = end - v;
2592: return istrue == wanttrue;
1.310 schwarze 2593: case 'd':
1.271 schwarze 2594: case 'r':
1.310 schwarze 2595: cp = v + *pos + 1;
2596: while (*cp == ' ')
2597: cp++;
2598: name = cp;
2599: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2600: if (sz == 0)
2601: istrue = 0;
2602: else if (v[*pos] == 'r')
2603: istrue = roff_hasregn(r, name, sz);
2604: else {
2605: deftype = ROFFDEF_ANY;
2606: roff_getstrn(r, name, sz, &deftype);
2607: istrue = !!deftype;
2608: }
1.363 schwarze 2609: *pos = (name + sz) - v;
1.310 schwarze 2610: return istrue == wanttrue;
1.88 kristaps 2611: default:
2612: break;
2613: }
2614:
1.241 schwarze 2615: savepos = *pos;
1.261 schwarze 2616: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2617: return (number > 0) == wanttrue;
1.241 schwarze 2618: else if (*pos == savepos)
1.277 schwarze 2619: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2620: else
1.277 schwarze 2621: return 0;
1.88 kristaps 2622: }
2623:
1.340 schwarze 2624: static int
1.103 kristaps 2625: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2626: {
1.123 schwarze 2627:
1.277 schwarze 2628: return ROFF_IGN;
1.89 kristaps 2629: }
2630:
1.340 schwarze 2631: static int
1.251 schwarze 2632: roff_insec(ROFF_ARGS)
2633: {
2634:
1.350 schwarze 2635: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2636: return ROFF_IGN;
1.251 schwarze 2637: }
2638:
1.340 schwarze 2639: static int
1.251 schwarze 2640: roff_unsupp(ROFF_ARGS)
2641: {
2642:
1.350 schwarze 2643: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2644: return ROFF_IGN;
1.251 schwarze 2645: }
2646:
1.340 schwarze 2647: static int
1.82 kristaps 2648: roff_cond(ROFF_ARGS)
1.74 kristaps 2649: {
1.340 schwarze 2650: int irc;
1.173 schwarze 2651:
2652: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2653:
1.207 schwarze 2654: /*
1.134 kristaps 2655: * An `.el' has no conditional body: it will consume the value
2656: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2657: * defaults to DENY.
1.134 kristaps 2658: *
2659: * If we're not an `el', however, then evaluate the conditional.
2660: */
1.133 kristaps 2661:
1.238 schwarze 2662: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2663: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2664: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2665:
1.134 kristaps 2666: /*
2667: * An if-else will put the NEGATION of the current evaluated
2668: * conditional into the stack of rules.
2669: */
2670:
1.238 schwarze 2671: if (tok == ROFF_ie) {
1.223 schwarze 2672: if (r->rstackpos + 1 == r->rstacksz) {
2673: r->rstacksz += 16;
2674: r->rstack = mandoc_reallocarray(r->rstack,
2675: r->rstacksz, sizeof(int));
1.134 kristaps 2676: }
1.198 schwarze 2677: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2678: }
1.88 kristaps 2679:
2680: /* If the parent has false as its rule, then so do we. */
2681:
1.198 schwarze 2682: if (r->last->parent && !r->last->parent->rule)
2683: r->last->rule = 0;
1.88 kristaps 2684:
2685: /*
1.173 schwarze 2686: * Determine scope.
2687: * If there is nothing on the line after the conditional,
2688: * not even whitespace, use next-line scope.
1.340 schwarze 2689: * Except that .while does not support next-line scope.
1.88 kristaps 2690: */
1.74 kristaps 2691:
1.340 schwarze 2692: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2693: r->last->endspan = 2;
2694: goto out;
2695: }
2696:
1.238 schwarze 2697: while (buf->buf[pos] == ' ')
1.173 schwarze 2698: pos++;
2699:
2700: /* An opening brace requests multiline scope. */
1.75 kristaps 2701:
1.238 schwarze 2702: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2703: r->last->endspan = -1;
2704: pos += 2;
1.272 schwarze 2705: while (buf->buf[pos] == ' ')
2706: pos++;
1.173 schwarze 2707: goto out;
1.207 schwarze 2708: }
1.74 kristaps 2709:
1.77 kristaps 2710: /*
1.173 schwarze 2711: * Anything else following the conditional causes
2712: * single-line scope. Warn if the scope contains
2713: * nothing but trailing whitespace.
1.77 kristaps 2714: */
2715:
1.238 schwarze 2716: if (buf->buf[pos] == '\0')
1.350 schwarze 2717: mandoc_msg(MANDOCERR_COND_EMPTY,
2718: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2719:
1.173 schwarze 2720: r->last->endspan = 1;
1.74 kristaps 2721:
1.173 schwarze 2722: out:
1.75 kristaps 2723: *offs = pos;
1.340 schwarze 2724: irc = ROFF_RERUN;
2725: if (tok == ROFF_while)
2726: irc |= ROFF_WHILE;
2727: return irc;
1.83 schwarze 2728: }
2729:
1.340 schwarze 2730: static int
1.92 schwarze 2731: roff_ds(ROFF_ARGS)
2732: {
1.212 schwarze 2733: char *string;
2734: const char *name;
2735: size_t namesz;
1.96 kristaps 2736:
1.251 schwarze 2737: /* Ignore groff compatibility mode for now. */
2738:
2739: if (tok == ROFF_ds1)
2740: tok = ROFF_ds;
2741: else if (tok == ROFF_as1)
2742: tok = ROFF_as;
2743:
1.96 kristaps 2744: /*
1.212 schwarze 2745: * The first word is the name of the string.
2746: * If it is empty or terminated by an escape sequence,
2747: * abort the `ds' request without defining anything.
1.96 kristaps 2748: */
1.92 schwarze 2749:
1.238 schwarze 2750: name = string = buf->buf + pos;
2751: if (*name == '\0')
1.277 schwarze 2752: return ROFF_IGN;
1.92 schwarze 2753:
1.212 schwarze 2754: namesz = roff_getname(r, &string, ln, pos);
1.363 schwarze 2755: switch (name[namesz]) {
2756: case '\\':
1.277 schwarze 2757: return ROFF_IGN;
1.363 schwarze 2758: case '\t':
2759: string = buf->buf + pos + namesz;
2760: break;
2761: default:
2762: break;
2763: }
1.212 schwarze 2764:
2765: /* Read past the initial double-quote, if any. */
1.238 schwarze 2766: if (*string == '"')
1.92 schwarze 2767: string++;
2768:
1.96 kristaps 2769: /* The rest is the value. */
1.212 schwarze 2770: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2771: ROFF_as == tok);
1.311 schwarze 2772: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2773: return ROFF_IGN;
1.92 schwarze 2774: }
2775:
1.204 schwarze 2776: /*
2777: * Parse a single operator, one or two characters long.
2778: * If the operator is recognized, return success and advance the
2779: * parse point, else return failure and let the parse point unchanged.
2780: */
2781: static int
2782: roff_getop(const char *v, int *pos, char *res)
2783: {
2784:
2785: *res = v[*pos];
2786:
2787: switch (*res) {
1.207 schwarze 2788: case '+':
2789: case '-':
2790: case '*':
2791: case '/':
2792: case '%':
2793: case '&':
2794: case ':':
1.204 schwarze 2795: break;
2796: case '<':
2797: switch (v[*pos + 1]) {
1.207 schwarze 2798: case '=':
1.204 schwarze 2799: *res = 'l';
2800: (*pos)++;
2801: break;
1.207 schwarze 2802: case '>':
1.204 schwarze 2803: *res = '!';
2804: (*pos)++;
2805: break;
1.207 schwarze 2806: case '?':
1.204 schwarze 2807: *res = 'i';
2808: (*pos)++;
2809: break;
2810: default:
2811: break;
2812: }
2813: break;
2814: case '>':
2815: switch (v[*pos + 1]) {
1.207 schwarze 2816: case '=':
1.204 schwarze 2817: *res = 'g';
2818: (*pos)++;
2819: break;
1.207 schwarze 2820: case '?':
1.204 schwarze 2821: *res = 'a';
2822: (*pos)++;
2823: break;
2824: default:
2825: break;
2826: }
2827: break;
2828: case '=':
2829: if ('=' == v[*pos + 1])
2830: (*pos)++;
2831: break;
2832: default:
1.277 schwarze 2833: return 0;
1.204 schwarze 2834: }
2835: (*pos)++;
2836:
1.277 schwarze 2837: return *res;
1.204 schwarze 2838: }
2839:
2840: /*
2841: * Evaluate either a parenthesized numeric expression
2842: * or a single signed integer number.
2843: */
2844: static int
1.235 schwarze 2845: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2846: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2847: {
2848:
2849: if ('(' != v[*pos])
1.277 schwarze 2850: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2851:
2852: (*pos)++;
1.261 schwarze 2853: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2854: return 0;
1.204 schwarze 2855:
1.206 schwarze 2856: /*
2857: * Omission of the closing parenthesis
2858: * is an error in validation mode,
2859: * but ignored in evaluation mode.
2860: */
2861:
1.204 schwarze 2862: if (')' == v[*pos])
2863: (*pos)++;
1.206 schwarze 2864: else if (NULL == res)
1.277 schwarze 2865: return 0;
1.204 schwarze 2866:
1.277 schwarze 2867: return 1;
1.204 schwarze 2868: }
2869:
2870: /*
2871: * Evaluate a complete numeric expression.
2872: * Proceed left to right, there is no concept of precedence.
2873: */
2874: static int
1.235 schwarze 2875: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2876: int *pos, int *res, int flags)
1.204 schwarze 2877: {
2878: int mypos, operand2;
2879: char operator;
2880:
2881: if (NULL == pos) {
2882: mypos = 0;
2883: pos = &mypos;
2884: }
2885:
1.261 schwarze 2886: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2887: while (isspace((unsigned char)v[*pos]))
2888: (*pos)++;
2889:
1.261 schwarze 2890: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2891: return 0;
1.204 schwarze 2892:
2893: while (1) {
1.261 schwarze 2894: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2895: while (isspace((unsigned char)v[*pos]))
2896: (*pos)++;
2897:
2898: if ( ! roff_getop(v, pos, &operator))
2899: break;
2900:
1.261 schwarze 2901: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2902: while (isspace((unsigned char)v[*pos]))
2903: (*pos)++;
2904:
1.261 schwarze 2905: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2906: return 0;
1.204 schwarze 2907:
1.261 schwarze 2908: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2909: while (isspace((unsigned char)v[*pos]))
2910: (*pos)++;
1.206 schwarze 2911:
2912: if (NULL == res)
2913: continue;
1.204 schwarze 2914:
2915: switch (operator) {
1.207 schwarze 2916: case '+':
1.204 schwarze 2917: *res += operand2;
2918: break;
1.207 schwarze 2919: case '-':
1.204 schwarze 2920: *res -= operand2;
2921: break;
1.207 schwarze 2922: case '*':
1.204 schwarze 2923: *res *= operand2;
2924: break;
1.207 schwarze 2925: case '/':
1.244 schwarze 2926: if (operand2 == 0) {
1.235 schwarze 2927: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2928: ln, *pos, "%s", v);
1.234 kristaps 2929: *res = 0;
2930: break;
2931: }
1.204 schwarze 2932: *res /= operand2;
2933: break;
1.207 schwarze 2934: case '%':
1.244 schwarze 2935: if (operand2 == 0) {
2936: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2937: ln, *pos, "%s", v);
1.244 schwarze 2938: *res = 0;
2939: break;
2940: }
1.204 schwarze 2941: *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 'l':
1.204 schwarze 2950: *res = *res <= operand2;
2951: break;
1.207 schwarze 2952: case 'g':
1.204 schwarze 2953: *res = *res >= operand2;
2954: break;
1.207 schwarze 2955: case '=':
1.204 schwarze 2956: *res = *res == operand2;
2957: break;
1.207 schwarze 2958: case '!':
1.204 schwarze 2959: *res = *res != operand2;
2960: break;
1.207 schwarze 2961: case '&':
1.204 schwarze 2962: *res = *res && operand2;
2963: break;
1.207 schwarze 2964: case ':':
1.204 schwarze 2965: *res = *res || operand2;
2966: break;
1.207 schwarze 2967: case 'i':
1.204 schwarze 2968: if (operand2 < *res)
2969: *res = operand2;
2970: break;
1.207 schwarze 2971: case 'a':
1.204 schwarze 2972: if (operand2 > *res)
2973: *res = operand2;
2974: break;
2975: default:
2976: abort();
2977: }
2978: }
1.277 schwarze 2979: return 1;
1.204 schwarze 2980: }
2981:
1.266 schwarze 2982: /* --- register management ------------------------------------------------ */
2983:
1.180 schwarze 2984: void
1.187 schwarze 2985: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2986: {
1.327 schwarze 2987: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2988: }
2989:
2990: static void
2991: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2992: int val, char sign, int step)
1.326 schwarze 2993: {
1.180 schwarze 2994: struct roffreg *reg;
2995:
2996: /* Search for an existing register with the same name. */
2997: reg = r->regtab;
2998:
1.326 schwarze 2999: while (reg != NULL && (reg->key.sz != len ||
3000: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 3001: reg = reg->next;
1.147 kristaps 3002:
1.180 schwarze 3003: if (NULL == reg) {
3004: /* Create a new register. */
3005: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 3006: reg->key.p = mandoc_strndup(name, len);
3007: reg->key.sz = len;
1.187 schwarze 3008: reg->val = 0;
1.327 schwarze 3009: reg->step = 0;
1.180 schwarze 3010: reg->next = r->regtab;
3011: r->regtab = reg;
3012: }
3013:
1.187 schwarze 3014: if ('+' == sign)
3015: reg->val += val;
3016: else if ('-' == sign)
3017: reg->val -= val;
3018: else
3019: reg->val = val;
1.327 schwarze 3020: if (step != INT_MIN)
3021: reg->step = step;
1.147 kristaps 3022: }
3023:
1.192 schwarze 3024: /*
3025: * Handle some predefined read-only number registers.
3026: * For now, return -1 if the requested register is not predefined;
3027: * in case a predefined read-only register having the value -1
3028: * were to turn up, another special value would have to be chosen.
3029: */
3030: static int
1.273 schwarze 3031: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 3032: {
3033:
3034: switch (*name) {
1.273 schwarze 3035: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 3036: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 3037: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 3038: return 0;
1.207 schwarze 3039: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 3040: return 1;
1.207 schwarze 3041: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 3042: return 24;
1.207 schwarze 3043: case 'j': /* Always adjust left margin only. */
1.277 schwarze 3044: return 0;
1.207 schwarze 3045: case 'T': /* Some output device is always defined. */
1.277 schwarze 3046: return 1;
1.207 schwarze 3047: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 3048: return 40;
1.192 schwarze 3049: default:
1.277 schwarze 3050: return -1;
1.192 schwarze 3051: }
3052: }
3053:
1.181 schwarze 3054: int
1.326 schwarze 3055: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 3056: {
1.327 schwarze 3057: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 3058: }
3059:
3060: static int
1.327 schwarze 3061: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 3062: {
3063: struct roffreg *reg;
1.192 schwarze 3064: int val;
3065:
3066: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3067: val = roff_getregro(r, name + 1);
1.192 schwarze 3068: if (-1 != val)
1.277 schwarze 3069: return val;
1.192 schwarze 3070: }
1.181 schwarze 3071:
1.327 schwarze 3072: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 3073: if (len == reg->key.sz &&
1.327 schwarze 3074: 0 == strncmp(name, reg->key.p, len)) {
3075: switch (sign) {
3076: case '+':
3077: reg->val += reg->step;
3078: break;
3079: case '-':
3080: reg->val -= reg->step;
3081: break;
3082: default:
3083: break;
3084: }
1.277 schwarze 3085: return reg->val;
1.327 schwarze 3086: }
3087: }
1.271 schwarze 3088:
1.327 schwarze 3089: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 3090: return 0;
1.271 schwarze 3091: }
3092:
3093: static int
3094: roff_hasregn(const struct roff *r, const char *name, size_t len)
3095: {
3096: struct roffreg *reg;
3097: int val;
3098:
3099: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3100: val = roff_getregro(r, name + 1);
1.271 schwarze 3101: if (-1 != val)
1.277 schwarze 3102: return 1;
1.271 schwarze 3103: }
3104:
3105: for (reg = r->regtab; reg; reg = reg->next)
3106: if (len == reg->key.sz &&
3107: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 3108: return 1;
1.147 kristaps 3109:
1.277 schwarze 3110: return 0;
1.147 kristaps 3111: }
3112:
1.180 schwarze 3113: static void
3114: roff_freereg(struct roffreg *reg)
1.147 kristaps 3115: {
1.180 schwarze 3116: struct roffreg *old_reg;
1.147 kristaps 3117:
1.180 schwarze 3118: while (NULL != reg) {
3119: free(reg->key.p);
3120: old_reg = reg;
3121: reg = reg->next;
3122: free(old_reg);
3123: }
1.147 kristaps 3124: }
1.92 schwarze 3125:
1.340 schwarze 3126: static int
1.89 kristaps 3127: roff_nr(ROFF_ARGS)
1.83 schwarze 3128: {
1.327 schwarze 3129: char *key, *val, *step;
1.212 schwarze 3130: size_t keysz;
1.327 schwarze 3131: int iv, is, len;
1.187 schwarze 3132: char sign;
1.89 kristaps 3133:
1.238 schwarze 3134: key = val = buf->buf + pos;
3135: if (*key == '\0')
1.277 schwarze 3136: return ROFF_IGN;
1.212 schwarze 3137:
3138: keysz = roff_getname(r, &val, ln, pos);
1.363 schwarze 3139: if (key[keysz] == '\\' || key[keysz] == '\t')
1.277 schwarze 3140: return ROFF_IGN;
1.89 kristaps 3141:
1.187 schwarze 3142: sign = *val;
1.238 schwarze 3143: if (sign == '+' || sign == '-')
1.187 schwarze 3144: val++;
3145:
1.327 schwarze 3146: len = 0;
3147: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3148: return ROFF_IGN;
3149:
3150: step = val + len;
3151: while (isspace((unsigned char)*step))
3152: step++;
3153: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3154: is = INT_MIN;
1.109 kristaps 3155:
1.327 schwarze 3156: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 3157: return ROFF_IGN;
1.203 schwarze 3158: }
3159:
1.340 schwarze 3160: static int
1.203 schwarze 3161: roff_rr(ROFF_ARGS)
3162: {
3163: struct roffreg *reg, **prev;
1.212 schwarze 3164: char *name, *cp;
3165: size_t namesz;
1.203 schwarze 3166:
1.238 schwarze 3167: name = cp = buf->buf + pos;
3168: if (*name == '\0')
1.277 schwarze 3169: return ROFF_IGN;
1.212 schwarze 3170: namesz = roff_getname(r, &cp, ln, pos);
3171: name[namesz] = '\0';
1.203 schwarze 3172:
3173: prev = &r->regtab;
3174: while (1) {
3175: reg = *prev;
1.238 schwarze 3176: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 3177: break;
3178: prev = ®->next;
3179: }
1.238 schwarze 3180: if (reg != NULL) {
1.203 schwarze 3181: *prev = reg->next;
3182: free(reg->key.p);
3183: free(reg);
3184: }
1.277 schwarze 3185: return ROFF_IGN;
1.122 schwarze 3186: }
3187:
1.266 schwarze 3188: /* --- handler functions for roff requests -------------------------------- */
3189:
1.340 schwarze 3190: static int
1.122 schwarze 3191: roff_rm(ROFF_ARGS)
3192: {
3193: const char *name;
3194: char *cp;
1.212 schwarze 3195: size_t namesz;
1.122 schwarze 3196:
1.238 schwarze 3197: cp = buf->buf + pos;
3198: while (*cp != '\0') {
1.212 schwarze 3199: name = cp;
1.238 schwarze 3200: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 3201: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 3202: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.363 schwarze 3203: if (name[namesz] == '\\' || name[namesz] == '\t')
1.212 schwarze 3204: break;
1.122 schwarze 3205: }
1.277 schwarze 3206: return ROFF_IGN;
1.178 schwarze 3207: }
3208:
1.340 schwarze 3209: static int
1.178 schwarze 3210: roff_it(ROFF_ARGS)
3211: {
3212: int iv;
3213:
3214: /* Parse the number of lines. */
1.261 schwarze 3215:
3216: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.350 schwarze 3217: mandoc_msg(MANDOCERR_IT_NONUM,
3218: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 3219: return ROFF_IGN;
1.178 schwarze 3220: }
3221:
1.262 schwarze 3222: while (isspace((unsigned char)buf->buf[pos]))
3223: pos++;
3224:
3225: /*
3226: * Arm the input line trap.
3227: * Special-casing "an-trap" is an ugly workaround to cope
3228: * with DocBook stupidly fiddling with man(7) internals.
3229: */
1.261 schwarze 3230:
1.178 schwarze 3231: roffit_lines = iv;
1.262 schwarze 3232: roffit_macro = mandoc_strdup(iv != 1 ||
3233: strcmp(buf->buf + pos, "an-trap") ?
3234: buf->buf + pos : "br");
1.277 schwarze 3235: return ROFF_IGN;
1.175 schwarze 3236: }
3237:
1.340 schwarze 3238: static int
1.175 schwarze 3239: roff_Dd(ROFF_ARGS)
3240: {
1.315 schwarze 3241: int mask;
3242: enum roff_tok t, te;
1.227 schwarze 3243:
1.315 schwarze 3244: switch (tok) {
3245: case ROFF_Dd:
3246: tok = MDOC_Dd;
3247: te = MDOC_MAX;
3248: if (r->format == 0)
3249: r->format = MPARSE_MDOC;
3250: mask = MPARSE_MDOC | MPARSE_QUICK;
3251: break;
3252: case ROFF_TH:
3253: tok = MAN_TH;
3254: te = MAN_MAX;
3255: if (r->format == 0)
3256: r->format = MPARSE_MAN;
3257: mask = MPARSE_QUICK;
3258: break;
3259: default:
3260: abort();
3261: }
3262: if ((r->options & mask) == 0)
3263: for (t = tok; t < te; t++)
3264: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3265: return ROFF_CONT;
1.109 kristaps 3266: }
3267:
1.340 schwarze 3268: static int
1.109 kristaps 3269: roff_TE(ROFF_ARGS)
3270: {
1.361 schwarze 3271: r->man->flags &= ~ROFF_NONOFILL;
1.321 schwarze 3272: if (r->tbl == NULL) {
1.350 schwarze 3273: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3274: return ROFF_IGN;
3275: }
1.346 schwarze 3276: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3277: r->tbl = NULL;
1.258 schwarze 3278: free(buf->buf);
3279: buf->buf = mandoc_strdup(".sp");
3280: buf->sz = 4;
1.329 schwarze 3281: *offs = 0;
1.277 schwarze 3282: return ROFF_REPARSE;
1.258 schwarze 3283: }
1.321 schwarze 3284: r->tbl = NULL;
1.277 schwarze 3285: return ROFF_IGN;
1.112 kristaps 3286: }
3287:
1.340 schwarze 3288: static int
1.112 kristaps 3289: roff_T_(ROFF_ARGS)
3290: {
3291:
3292: if (NULL == r->tbl)
1.350 schwarze 3293: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3294: else
1.296 schwarze 3295: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3296:
1.277 schwarze 3297: return ROFF_IGN;
1.109 kristaps 3298: }
3299:
1.230 schwarze 3300: /*
3301: * Handle in-line equation delimiters.
3302: */
1.340 schwarze 3303: static int
1.238 schwarze 3304: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3305: {
1.233 schwarze 3306: char *cp1, *cp2;
3307: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3308:
1.230 schwarze 3309: /*
3310: * Outside equations, look for an opening delimiter.
3311: * If we are inside an equation, we already know it is
3312: * in-line, or this function wouldn't have been called;
3313: * so look for a closing delimiter.
3314: */
3315:
1.238 schwarze 3316: cp1 = buf->buf + pos;
1.230 schwarze 3317: cp2 = strchr(cp1, r->eqn == NULL ?
3318: r->last_eqn->odelim : r->last_eqn->cdelim);
3319: if (cp2 == NULL)
1.277 schwarze 3320: return ROFF_CONT;
1.230 schwarze 3321:
1.233 schwarze 3322: *cp2++ = '\0';
3323: bef_pr = bef_nl = aft_nl = aft_pr = "";
3324:
3325: /* Handle preceding text, protecting whitespace. */
3326:
1.238 schwarze 3327: if (*buf->buf != '\0') {
1.233 schwarze 3328: if (r->eqn == NULL)
3329: bef_pr = "\\&";
3330: bef_nl = "\n";
3331: }
3332:
3333: /*
3334: * Prepare replacing the delimiter with an equation macro
3335: * and drop leading white space from the equation.
3336: */
1.230 schwarze 3337:
1.233 schwarze 3338: if (r->eqn == NULL) {
3339: while (*cp2 == ' ')
3340: cp2++;
3341: mac = ".EQ";
3342: } else
3343: mac = ".EN";
3344:
3345: /* Handle following text, protecting whitespace. */
3346:
3347: if (*cp2 != '\0') {
3348: aft_nl = "\n";
3349: if (r->eqn != NULL)
3350: aft_pr = "\\&";
3351: }
3352:
3353: /* Do the actual replacement. */
3354:
1.238 schwarze 3355: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3356: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3357: free(buf->buf);
3358: buf->buf = cp1;
1.230 schwarze 3359:
3360: /* Toggle the in-line state of the eqn subsystem. */
3361:
3362: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3363: return ROFF_REPARSE;
1.151 kristaps 3364: }
3365:
1.340 schwarze 3366: static int
1.235 schwarze 3367: roff_EQ(ROFF_ARGS)
1.125 kristaps 3368: {
1.319 schwarze 3369: struct roff_node *n;
3370:
1.356 schwarze 3371: if (r->man->meta.macroset == MACROSET_MAN)
1.322 schwarze 3372: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3373: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3374: if (ln > r->man->last->line)
3375: n->flags |= NODE_LINE;
1.348 schwarze 3376: n->eqn = eqn_box_new();
1.319 schwarze 3377: roff_node_append(r->man, n);
3378: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3379:
1.238 schwarze 3380: assert(r->eqn == NULL);
1.319 schwarze 3381: if (r->last_eqn == NULL)
1.351 schwarze 3382: r->last_eqn = eqn_alloc();
1.319 schwarze 3383: else
3384: eqn_reset(r->last_eqn);
3385: r->eqn = r->last_eqn;
3386: r->eqn->node = n;
1.151 kristaps 3387:
1.238 schwarze 3388: if (buf->buf[pos] != '\0')
1.350 schwarze 3389: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3390: ".EQ %s", buf->buf + pos);
1.151 kristaps 3391:
1.277 schwarze 3392: return ROFF_IGN;
1.125 kristaps 3393: }
3394:
1.340 schwarze 3395: static int
1.125 kristaps 3396: roff_EN(ROFF_ARGS)
3397: {
1.319 schwarze 3398: if (r->eqn != NULL) {
3399: eqn_parse(r->eqn);
3400: r->eqn = NULL;
3401: } else
1.350 schwarze 3402: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3403: if (buf->buf[pos] != '\0')
1.350 schwarze 3404: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3405: "EN %s", buf->buf + pos);
1.277 schwarze 3406: return ROFF_IGN;
1.125 kristaps 3407: }
3408:
1.340 schwarze 3409: static int
1.109 kristaps 3410: roff_TS(ROFF_ARGS)
3411: {
1.321 schwarze 3412: if (r->tbl != NULL) {
1.350 schwarze 3413: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3414: tbl_end(r->tbl, 0);
1.115 kristaps 3415: }
1.361 schwarze 3416: r->man->flags |= ROFF_NONOFILL;
1.351 schwarze 3417: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.346 schwarze 3418: if (r->last_tbl == NULL)
1.321 schwarze 3419: r->first_tbl = r->tbl;
3420: r->last_tbl = r->tbl;
1.297 schwarze 3421: return ROFF_IGN;
3422: }
3423:
1.340 schwarze 3424: static int
1.358 schwarze 3425: roff_noarg(ROFF_ARGS)
3426: {
3427: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3428: man_breakscope(r->man, tok);
3429: if (tok == ROFF_brp)
3430: tok = ROFF_br;
3431: roff_elem_alloc(r->man, ln, ppos, tok);
3432: if (buf->buf[pos] != '\0')
3433: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3434: "%s %s", roff_name[tok], buf->buf + pos);
3435: if (tok == ROFF_nf)
3436: r->man->flags |= ROFF_NOFILL;
3437: else if (tok == ROFF_fi)
3438: r->man->flags &= ~ROFF_NOFILL;
3439: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3440: r->man->next = ROFF_NEXT_SIBLING;
3441: return ROFF_IGN;
3442: }
3443:
3444: static int
1.297 schwarze 3445: roff_onearg(ROFF_ARGS)
3446: {
3447: struct roff_node *n;
3448: char *cp;
1.305 schwarze 3449: int npos;
1.297 schwarze 3450:
1.302 schwarze 3451: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3452: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3453: tok == ROFF_ti))
1.302 schwarze 3454: man_breakscope(r->man, tok);
3455:
1.309 schwarze 3456: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3457: r->man->last = roffce_node;
3458: r->man->next = ROFF_NEXT_SIBLING;
3459: }
3460:
1.297 schwarze 3461: roff_elem_alloc(r->man, ln, ppos, tok);
3462: n = r->man->last;
3463:
3464: cp = buf->buf + pos;
3465: if (*cp != '\0') {
3466: while (*cp != '\0' && *cp != ' ')
3467: cp++;
3468: while (*cp == ' ')
3469: *cp++ = '\0';
3470: if (*cp != '\0')
1.350 schwarze 3471: mandoc_msg(MANDOCERR_ARG_EXCESS,
3472: ln, (int)(cp - buf->buf),
1.297 schwarze 3473: "%s ... %s", roff_name[tok], cp);
3474: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3475: }
3476:
1.309 schwarze 3477: if (tok == ROFF_ce || tok == ROFF_rj) {
3478: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3479: roff_word_alloc(r->man, ln, pos, "1");
3480: r->man->last->flags |= NODE_NOSRC;
3481: }
3482: npos = 0;
3483: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3484: &roffce_lines, 0) == 0) {
1.350 schwarze 3485: mandoc_msg(MANDOCERR_CE_NONUM,
3486: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3487: roffce_lines = 1;
3488: }
3489: if (roffce_lines < 1) {
3490: r->man->last = r->man->last->parent;
3491: roffce_node = NULL;
3492: roffce_lines = 0;
3493: } else
3494: roffce_node = r->man->last->parent;
3495: } else {
3496: n->flags |= NODE_VALID | NODE_ENDED;
3497: r->man->last = n;
3498: }
3499: n->flags |= NODE_LINE;
1.300 schwarze 3500: r->man->next = ROFF_NEXT_SIBLING;
3501: return ROFF_IGN;
3502: }
3503:
1.340 schwarze 3504: static int
1.300 schwarze 3505: roff_manyarg(ROFF_ARGS)
3506: {
3507: struct roff_node *n;
3508: char *sp, *ep;
3509:
3510: roff_elem_alloc(r->man, ln, ppos, tok);
3511: n = r->man->last;
3512:
3513: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3514: while (*ep != '\0' && *ep != ' ')
3515: ep++;
3516: while (*ep == ' ')
3517: *ep++ = '\0';
3518: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3519: }
3520:
3521: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3522: r->man->last = n;
3523: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3524: return ROFF_IGN;
1.251 schwarze 3525: }
3526:
1.340 schwarze 3527: static int
1.311 schwarze 3528: roff_als(ROFF_ARGS)
3529: {
3530: char *oldn, *newn, *end, *value;
3531: size_t oldsz, newsz, valsz;
3532:
3533: newn = oldn = buf->buf + pos;
3534: if (*newn == '\0')
3535: return ROFF_IGN;
3536:
3537: newsz = roff_getname(r, &oldn, ln, pos);
1.363 schwarze 3538: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.311 schwarze 3539: return ROFF_IGN;
3540:
3541: end = oldn;
3542: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3543: if (oldsz == 0)
3544: return ROFF_IGN;
3545:
1.338 schwarze 3546: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3547: (int)oldsz, oldn);
1.311 schwarze 3548: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3549: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3550: free(value);
1.364 schwarze 3551: return ROFF_IGN;
3552: }
3553:
3554: /*
3555: * The .break request only makes sense inside conditionals,
3556: * and that case is already handled in roff_cond_sub().
3557: */
3558: static int
3559: roff_break(ROFF_ARGS)
3560: {
3561: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.296 schwarze 3562: return ROFF_IGN;
1.92 schwarze 3563: }
3564:
1.340 schwarze 3565: static int
1.174 kristaps 3566: roff_cc(ROFF_ARGS)
3567: {
3568: const char *p;
3569:
1.238 schwarze 3570: p = buf->buf + pos;
1.174 kristaps 3571:
1.238 schwarze 3572: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3573: r->control = '\0';
1.174 kristaps 3574:
1.238 schwarze 3575: if (*p != '\0')
1.350 schwarze 3576: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3577: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3578:
1.341 schwarze 3579: return ROFF_IGN;
3580: }
3581:
3582: static int
3583: roff_char(ROFF_ARGS)
3584: {
3585: const char *p, *kp, *vp;
3586: size_t ksz, vsz;
3587: int font;
3588:
3589: /* Parse the character to be replaced. */
3590:
3591: kp = buf->buf + pos;
3592: p = kp + 1;
3593: if (*kp == '\0' || (*kp == '\\' &&
3594: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3595: (*p != ' ' && *p != '\0')) {
1.350 schwarze 3596: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3597: return ROFF_IGN;
3598: }
3599: ksz = p - kp;
3600: while (*p == ' ')
3601: p++;
3602:
3603: /*
3604: * If the replacement string contains a font escape sequence,
3605: * we have to restore the font at the end.
3606: */
3607:
3608: vp = p;
3609: vsz = strlen(p);
3610: font = 0;
3611: while (*p != '\0') {
3612: if (*p++ != '\\')
3613: continue;
3614: switch (mandoc_escape(&p, NULL, NULL)) {
3615: case ESCAPE_FONT:
3616: case ESCAPE_FONTROMAN:
3617: case ESCAPE_FONTITALIC:
3618: case ESCAPE_FONTBOLD:
3619: case ESCAPE_FONTBI:
1.378 schwarze 3620: case ESCAPE_FONTCR:
3621: case ESCAPE_FONTCB:
3622: case ESCAPE_FONTCI:
1.341 schwarze 3623: case ESCAPE_FONTPREV:
3624: font++;
3625: break;
3626: default:
3627: break;
3628: }
3629: }
3630: if (font > 1)
1.350 schwarze 3631: mandoc_msg(MANDOCERR_CHAR_FONT,
3632: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3633:
3634: /*
3635: * Approximate the effect of .char using the .tr tables.
3636: * XXX In groff, .char and .tr interact differently.
3637: */
3638:
3639: if (ksz == 1) {
3640: if (r->xtab == NULL)
3641: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3642: assert((unsigned int)*kp < 128);
3643: free(r->xtab[(int)*kp].p);
3644: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3645: "%s%s", vp, font ? "\fP" : "");
3646: } else {
3647: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3648: if (font)
3649: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3650: }
1.277 schwarze 3651: return ROFF_IGN;
1.174 kristaps 3652: }
3653:
1.340 schwarze 3654: static int
1.303 schwarze 3655: roff_ec(ROFF_ARGS)
3656: {
3657: const char *p;
3658:
3659: p = buf->buf + pos;
3660: if (*p == '\0')
3661: r->escape = '\\';
3662: else {
3663: r->escape = *p;
3664: if (*++p != '\0')
1.350 schwarze 3665: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3666: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3667: }
3668: return ROFF_IGN;
3669: }
3670:
1.340 schwarze 3671: static int
1.303 schwarze 3672: roff_eo(ROFF_ARGS)
3673: {
3674: r->escape = '\0';
3675: if (buf->buf[pos] != '\0')
1.350 schwarze 3676: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3677: ln, pos, "eo %s", buf->buf + pos);
1.384 schwarze 3678: return ROFF_IGN;
3679: }
3680:
3681: static int
3682: roff_mc(ROFF_ARGS)
3683: {
3684: struct roff_node *n;
3685: char *cp;
3686:
3687: /* Parse the first argument. */
3688:
3689: cp = buf->buf + pos;
3690: if (*cp != '\0')
3691: cp++;
3692: if (buf->buf[pos] == '\\') {
3693: switch (mandoc_escape((const char **)&cp, NULL, NULL)) {
3694: case ESCAPE_SPECIAL:
3695: case ESCAPE_UNICODE:
3696: case ESCAPE_NUMBERED:
3697: break;
3698: default:
3699: *cp = '\0';
3700: mandoc_msg(MANDOCERR_MC_ESC, ln, pos,
3701: "mc %s", buf->buf + pos);
3702: buf->buf[pos] = '\0';
3703: break;
3704: }
3705: }
3706:
3707: /* Ignore additional arguments. */
3708:
3709: while (*cp == ' ')
3710: *cp++ = '\0';
3711: if (*cp != '\0') {
3712: mandoc_msg(MANDOCERR_MC_DIST, ln, (int)(cp - buf->buf),
3713: "mc ... %s", cp);
3714: *cp = '\0';
3715: }
3716:
3717: /* Create the .mc node. */
3718:
3719: roff_elem_alloc(r->man, ln, ppos, tok);
3720: n = r->man->last;
3721: if (buf->buf[pos] != '\0')
3722: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
3723: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3724: r->man->last = n;
3725: r->man->next = ROFF_NEXT_SIBLING;
1.303 schwarze 3726: return ROFF_IGN;
1.330 schwarze 3727: }
3728:
1.340 schwarze 3729: static int
1.330 schwarze 3730: roff_nop(ROFF_ARGS)
3731: {
3732: while (buf->buf[pos] == ' ')
3733: pos++;
3734: *offs = pos;
3735: return ROFF_RERUN;
1.303 schwarze 3736: }
3737:
1.340 schwarze 3738: static int
1.164 kristaps 3739: roff_tr(ROFF_ARGS)
3740: {
3741: const char *p, *first, *second;
3742: size_t fsz, ssz;
3743:
1.238 schwarze 3744: p = buf->buf + pos;
1.164 kristaps 3745:
1.238 schwarze 3746: if (*p == '\0') {
1.350 schwarze 3747: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3748: return ROFF_IGN;
1.164 kristaps 3749: }
3750:
1.238 schwarze 3751: while (*p != '\0') {
1.164 kristaps 3752: fsz = ssz = 1;
3753:
3754: first = p++;
1.238 schwarze 3755: if (*first == '\\') {
1.394 ! schwarze 3756: if (mandoc_escape(&p, NULL, NULL) == ESCAPE_ERROR)
1.277 schwarze 3757: return ROFF_IGN;
1.164 kristaps 3758: fsz = (size_t)(p - first);
3759: }
3760:
3761: second = p++;
1.238 schwarze 3762: if (*second == '\\') {
1.394 ! schwarze 3763: if (mandoc_escape(&p, NULL, NULL) == ESCAPE_ERROR)
1.277 schwarze 3764: return ROFF_IGN;
1.164 kristaps 3765: ssz = (size_t)(p - second);
1.238 schwarze 3766: } else if (*second == '\0') {
1.350 schwarze 3767: mandoc_msg(MANDOCERR_TR_ODD, ln,
3768: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3769: second = " ";
1.165 kristaps 3770: p--;
1.164 kristaps 3771: }
3772:
1.167 kristaps 3773: if (fsz > 1) {
1.207 schwarze 3774: roff_setstrn(&r->xmbtab, first, fsz,
3775: second, ssz, 0);
1.167 kristaps 3776: continue;
3777: }
3778:
1.238 schwarze 3779: if (r->xtab == NULL)
1.207 schwarze 3780: r->xtab = mandoc_calloc(128,
3781: sizeof(struct roffstr));
1.167 kristaps 3782:
3783: free(r->xtab[(int)*first].p);
3784: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3785: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3786: }
3787:
1.277 schwarze 3788: return ROFF_IGN;
1.164 kristaps 3789: }
3790:
1.339 schwarze 3791: /*
3792: * Implementation of the .return request.
3793: * There is no need to call roff_userret() from here.
3794: * The read module will call that after rewinding the reader stack
3795: * to the place from where the current macro was called.
3796: */
1.340 schwarze 3797: static int
1.339 schwarze 3798: roff_return(ROFF_ARGS)
3799: {
3800: if (r->mstackpos >= 0)
1.340 schwarze 3801: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3802:
1.350 schwarze 3803: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3804: return ROFF_IGN;
3805: }
3806:
1.340 schwarze 3807: static int
1.306 schwarze 3808: roff_rn(ROFF_ARGS)
3809: {
3810: const char *value;
3811: char *oldn, *newn, *end;
3812: size_t oldsz, newsz;
1.315 schwarze 3813: int deftype;
1.306 schwarze 3814:
3815: oldn = newn = buf->buf + pos;
3816: if (*oldn == '\0')
3817: return ROFF_IGN;
3818:
3819: oldsz = roff_getname(r, &newn, ln, pos);
1.363 schwarze 3820: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.306 schwarze 3821: return ROFF_IGN;
3822:
3823: end = newn;
3824: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3825: if (newsz == 0)
3826: return ROFF_IGN;
3827:
1.315 schwarze 3828: deftype = ROFFDEF_ANY;
3829: value = roff_getstrn(r, oldn, oldsz, &deftype);
3830: switch (deftype) {
3831: case ROFFDEF_USER:
1.306 schwarze 3832: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3833: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3834: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3835: break;
3836: case ROFFDEF_PRE:
3837: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3838: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3839: break;
3840: case ROFFDEF_REN:
1.306 schwarze 3841: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3842: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3843: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3844: break;
3845: case ROFFDEF_STD:
1.306 schwarze 3846: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3847: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3848: break;
3849: default:
3850: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3851: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3852: break;
3853: }
1.306 schwarze 3854: return ROFF_IGN;
3855: }
3856:
1.340 schwarze 3857: static int
1.339 schwarze 3858: roff_shift(ROFF_ARGS)
3859: {
3860: struct mctx *ctx;
1.382 schwarze 3861: int argpos, levels, i;
1.339 schwarze 3862:
1.382 schwarze 3863: argpos = pos;
1.339 schwarze 3864: levels = 1;
3865: if (buf->buf[pos] != '\0' &&
3866: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 schwarze 3867: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3868: ln, pos, "shift %s", buf->buf + pos);
3869: levels = 1;
3870: }
3871: if (r->mstackpos < 0) {
1.350 schwarze 3872: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3873: return ROFF_IGN;
3874: }
3875: ctx = r->mstack + r->mstackpos;
3876: if (levels > ctx->argc) {
1.350 schwarze 3877: mandoc_msg(MANDOCERR_SHIFT,
1.382 schwarze 3878: ln, argpos, "%d, but max is %d", levels, ctx->argc);
1.339 schwarze 3879: levels = ctx->argc;
1.382 schwarze 3880: }
3881: if (levels < 0) {
3882: mandoc_msg(MANDOCERR_ARG_NEG, ln, argpos, "shift %d", levels);
3883: levels = 0;
1.339 schwarze 3884: }
3885: if (levels == 0)
3886: return ROFF_IGN;
3887: for (i = 0; i < levels; i++)
3888: free(ctx->argv[i]);
3889: ctx->argc -= levels;
3890: for (i = 0; i < ctx->argc; i++)
3891: ctx->argv[i] = ctx->argv[i + levels];
3892: return ROFF_IGN;
3893: }
3894:
1.340 schwarze 3895: static int
1.105 kristaps 3896: roff_so(ROFF_ARGS)
3897: {
1.249 schwarze 3898: char *name, *cp;
1.105 kristaps 3899:
1.238 schwarze 3900: name = buf->buf + pos;
1.350 schwarze 3901: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3902:
3903: /*
3904: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3905: * opening anything that's not in our cwd or anything beneath
3906: * it. Thus, explicitly disallow traversing up the file-system
3907: * or using absolute paths.
3908: */
3909:
1.238 schwarze 3910: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 schwarze 3911: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3912: buf->sz = mandoc_asprintf(&cp,
3913: ".sp\nSee the file %s.\n.sp", name) + 1;
3914: free(buf->buf);
3915: buf->buf = cp;
3916: *offs = 0;
1.277 schwarze 3917: return ROFF_REPARSE;
1.105 kristaps 3918: }
3919:
3920: *offs = pos;
1.277 schwarze 3921: return ROFF_SO;
1.105 kristaps 3922: }
1.92 schwarze 3923:
1.266 schwarze 3924: /* --- user defined strings and macros ------------------------------------ */
3925:
1.340 schwarze 3926: static int
1.106 kristaps 3927: roff_userdef(ROFF_ARGS)
1.99 kristaps 3928: {
1.339 schwarze 3929: struct mctx *ctx;
3930: char *arg, *ap, *dst, *src;
3931: size_t sz;
3932:
1.365 schwarze 3933: /* If the macro is empty, ignore it altogether. */
3934:
3935: if (*r->current_string == '\0')
3936: return ROFF_IGN;
3937:
1.339 schwarze 3938: /* Initialize a new macro stack context. */
3939:
3940: if (++r->mstackpos == r->mstacksz) {
3941: r->mstack = mandoc_recallocarray(r->mstack,
3942: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3943: r->mstacksz += 8;
3944: }
3945: ctx = r->mstack + r->mstackpos;
3946: ctx->argc = 0;
3947:
3948: /*
3949: * Collect pointers to macro argument strings,
3950: * NUL-terminating them and escaping quotes.
3951: */
3952:
3953: src = buf->buf + pos;
3954: while (*src != '\0') {
3955: if (ctx->argc == ctx->argsz) {
3956: ctx->argsz += 8;
3957: ctx->argv = mandoc_reallocarray(ctx->argv,
3958: ctx->argsz, sizeof(*ctx->argv));
3959: }
1.355 schwarze 3960: arg = roff_getarg(r, &src, ln, &pos);
1.339 schwarze 3961: sz = 1; /* For the terminating NUL. */
3962: for (ap = arg; *ap != '\0'; ap++)
3963: sz += *ap == '"' ? 4 : 1;
3964: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3965: for (ap = arg; *ap != '\0'; ap++) {
3966: if (*ap == '"') {
3967: memcpy(dst, "\\(dq", 4);
3968: dst += 4;
3969: } else
3970: *dst++ = *ap;
1.106 kristaps 3971: }
1.339 schwarze 3972: *dst = '\0';
1.355 schwarze 3973: free(arg);
1.337 schwarze 3974: }
3975:
1.339 schwarze 3976: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3977:
1.238 schwarze 3978: free(buf->buf);
1.339 schwarze 3979: buf->buf = mandoc_strdup(r->current_string);
3980: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3981: *offs = 0;
1.106 kristaps 3982:
1.365 schwarze 3983: return buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3984: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3985: }
1.121 schwarze 3986:
1.306 schwarze 3987: /*
3988: * Calling a high-level macro that was renamed with .rn.
3989: * r->current_string has already been set up by roff_parse().
3990: */
1.340 schwarze 3991: static int
1.306 schwarze 3992: roff_renamed(ROFF_ARGS)
3993: {
3994: char *nbuf;
3995:
1.315 schwarze 3996: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3997: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3998: free(buf->buf);
3999: buf->buf = nbuf;
1.329 schwarze 4000: *offs = 0;
1.306 schwarze 4001: return ROFF_CONT;
4002: }
4003:
1.362 schwarze 4004: /*
4005: * Measure the length in bytes of the roff identifier at *cpp
4006: * and advance the pointer to the next word.
4007: */
1.212 schwarze 4008: static size_t
1.121 schwarze 4009: roff_getname(struct roff *r, char **cpp, int ln, int pos)
4010: {
4011: char *name, *cp;
1.393 schwarze 4012: int namesz, inam, iend;
1.121 schwarze 4013:
4014: name = *cpp;
1.362 schwarze 4015: if (*name == '\0')
1.277 schwarze 4016: return 0;
1.121 schwarze 4017:
1.362 schwarze 4018: /* Advance cp to the byte after the end of the name. */
4019:
1.393 schwarze 4020: cp = name;
4021: namesz = 0;
4022: for (;;) {
1.363 schwarze 4023: if (*cp == '\0')
1.212 schwarze 4024: break;
1.363 schwarze 4025: if (*cp == ' ' || *cp == '\t') {
4026: cp++;
4027: break;
4028: }
1.393 schwarze 4029: if (*cp != '\\') {
4030: if (name + namesz < cp) {
4031: name[namesz] = *cp;
4032: *cp = ' ';
4033: }
4034: namesz++;
4035: cp++;
1.121 schwarze 4036: continue;
1.393 schwarze 4037: }
1.362 schwarze 4038: if (cp[1] == '{' || cp[1] == '}')
1.215 schwarze 4039: break;
1.393 schwarze 4040: if (roff_escape(cp, 0, 0, NULL, &inam,
4041: NULL, NULL, &iend) != ESCAPE_UNDEF) {
4042: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
4043: "%.*s%.*s", namesz, name, iend, cp);
4044: cp += iend;
4045: break;
4046: }
4047:
4048: /*
4049: * In an identifier, \\, \., \G and so on
4050: * are reduced to \, ., G and so on,
4051: * vaguely similar to copy mode.
4052: */
4053:
4054: name[namesz++] = cp[inam];
4055: while (iend--) {
4056: if (cp >= name + namesz)
4057: *cp = ' ';
4058: cp++;
4059: }
1.121 schwarze 4060: }
4061:
4062: /* Read past spaces. */
1.362 schwarze 4063:
4064: while (*cp == ' ')
1.121 schwarze 4065: cp++;
4066:
4067: *cpp = cp;
1.277 schwarze 4068: return namesz;
1.121 schwarze 4069: }
4070:
1.106 kristaps 4071: /*
4072: * Store *string into the user-defined string called *name.
4073: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 4074: * append == 0: replace mode
4075: * append == 1: single-line append mode
4076: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 4077: */
1.94 kristaps 4078: static void
1.106 kristaps 4079: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 4080: int append)
1.92 schwarze 4081: {
1.315 schwarze 4082: size_t namesz;
1.164 kristaps 4083:
1.315 schwarze 4084: namesz = strlen(name);
4085: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 4086: string ? strlen(string) : 0, append);
1.315 schwarze 4087: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 4088: }
4089:
4090: static void
1.166 kristaps 4091: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 4092: const char *string, size_t stringsz, int append)
1.164 kristaps 4093: {
1.166 kristaps 4094: struct roffkv *n;
1.164 kristaps 4095: char *c;
4096: int i;
4097: size_t oldch, newch;
1.92 schwarze 4098:
1.106 kristaps 4099: /* Search for an existing string with the same name. */
1.164 kristaps 4100: n = *r;
4101:
1.211 schwarze 4102: while (n && (namesz != n->key.sz ||
4103: strncmp(n->key.p, name, namesz)))
1.92 schwarze 4104: n = n->next;
1.94 kristaps 4105:
4106: if (NULL == n) {
1.106 kristaps 4107: /* Create a new string table entry. */
1.166 kristaps 4108: n = mandoc_malloc(sizeof(struct roffkv));
4109: n->key.p = mandoc_strndup(name, namesz);
4110: n->key.sz = namesz;
4111: n->val.p = NULL;
4112: n->val.sz = 0;
1.164 kristaps 4113: n->next = *r;
4114: *r = n;
1.193 schwarze 4115: } else if (0 == append) {
1.166 kristaps 4116: free(n->val.p);
4117: n->val.p = NULL;
4118: n->val.sz = 0;
1.106 kristaps 4119: }
4120:
4121: if (NULL == string)
4122: return;
4123:
4124: /*
4125: * One additional byte for the '\n' in multiline mode,
4126: * and one for the terminating '\0'.
4127: */
1.193 schwarze 4128: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 4129:
1.166 kristaps 4130: if (NULL == n->val.p) {
4131: n->val.p = mandoc_malloc(newch);
4132: *n->val.p = '\0';
1.106 kristaps 4133: oldch = 0;
4134: } else {
1.166 kristaps 4135: oldch = n->val.sz;
4136: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 4137: }
4138:
4139: /* Skip existing content in the destination buffer. */
1.166 kristaps 4140: c = n->val.p + (int)oldch;
1.106 kristaps 4141:
4142: /* Append new content to the destination buffer. */
1.164 kristaps 4143: i = 0;
4144: while (i < (int)stringsz) {
1.106 kristaps 4145: /*
4146: * Rudimentary roff copy mode:
4147: * Handle escaped backslashes.
4148: */
1.164 kristaps 4149: if ('\\' == string[i] && '\\' == string[i + 1])
4150: i++;
4151: *c++ = string[i++];
1.106 kristaps 4152: }
1.94 kristaps 4153:
1.106 kristaps 4154: /* Append terminating bytes. */
1.193 schwarze 4155: if (1 < append)
1.106 kristaps 4156: *c++ = '\n';
1.163 kristaps 4157:
1.106 kristaps 4158: *c = '\0';
1.166 kristaps 4159: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 4160: }
4161:
1.94 kristaps 4162: static const char *
1.325 schwarze 4163: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 4164: int *deftype)
1.92 schwarze 4165: {
1.315 schwarze 4166: const struct roffkv *n;
1.325 schwarze 4167: int found, i;
1.315 schwarze 4168: enum roff_tok tok;
4169:
1.325 schwarze 4170: found = 0;
4171: for (n = r->strtab; n != NULL; n = n->next) {
4172: if (strncmp(name, n->key.p, len) != 0 ||
4173: n->key.p[len] != '\0' || n->val.p == NULL)
4174: continue;
4175: if (*deftype & ROFFDEF_USER) {
4176: *deftype = ROFFDEF_USER;
4177: return n->val.p;
4178: } else {
4179: found = 1;
4180: break;
4181: }
4182: }
4183: for (n = r->rentab; n != NULL; n = n->next) {
4184: if (strncmp(name, n->key.p, len) != 0 ||
4185: n->key.p[len] != '\0' || n->val.p == NULL)
4186: continue;
4187: if (*deftype & ROFFDEF_REN) {
4188: *deftype = ROFFDEF_REN;
4189: return n->val.p;
4190: } else {
4191: found = 1;
4192: break;
1.315 schwarze 4193: }
4194: }
1.325 schwarze 4195: for (i = 0; i < PREDEFS_MAX; i++) {
4196: if (strncmp(name, predefs[i].name, len) != 0 ||
4197: predefs[i].name[len] != '\0')
4198: continue;
4199: if (*deftype & ROFFDEF_PRE) {
4200: *deftype = ROFFDEF_PRE;
4201: return predefs[i].str;
4202: } else {
4203: found = 1;
4204: break;
1.315 schwarze 4205: }
4206: }
1.356 schwarze 4207: if (r->man->meta.macroset != MACROSET_MAN) {
1.325 schwarze 4208: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4209: if (strncmp(name, roff_name[tok], len) != 0 ||
4210: roff_name[tok][len] != '\0')
4211: continue;
4212: if (*deftype & ROFFDEF_STD) {
4213: *deftype = ROFFDEF_STD;
4214: return NULL;
4215: } else {
4216: found = 1;
4217: break;
1.315 schwarze 4218: }
4219: }
4220: }
1.356 schwarze 4221: if (r->man->meta.macroset != MACROSET_MDOC) {
1.325 schwarze 4222: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4223: if (strncmp(name, roff_name[tok], len) != 0 ||
4224: roff_name[tok][len] != '\0')
4225: continue;
4226: if (*deftype & ROFFDEF_STD) {
4227: *deftype = ROFFDEF_STD;
4228: return NULL;
4229: } else {
4230: found = 1;
4231: break;
1.315 schwarze 4232: }
4233: }
1.325 schwarze 4234: }
4235:
4236: if (found == 0 && *deftype != ROFFDEF_ANY) {
4237: if (*deftype & ROFFDEF_REN) {
4238: /*
4239: * This might still be a request,
4240: * so do not treat it as undefined yet.
4241: */
4242: *deftype = ROFFDEF_UNDEF;
4243: return NULL;
1.315 schwarze 4244: }
1.325 schwarze 4245:
4246: /* Using an undefined string defines it to be empty. */
4247:
4248: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4249: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 4250: }
1.325 schwarze 4251:
1.315 schwarze 4252: *deftype = 0;
1.277 schwarze 4253: return NULL;
1.92 schwarze 4254: }
4255:
1.94 kristaps 4256: static void
1.167 kristaps 4257: roff_freestr(struct roffkv *r)
1.92 schwarze 4258: {
1.166 kristaps 4259: struct roffkv *n, *nn;
1.92 schwarze 4260:
1.167 kristaps 4261: for (n = r; n; n = nn) {
1.166 kristaps 4262: free(n->key.p);
4263: free(n->val.p);
1.92 schwarze 4264: nn = n->next;
4265: free(n);
4266: }
1.114 kristaps 4267: }
1.266 schwarze 4268:
4269: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 4270:
4271: /*
4272: * Duplicate an input string, making the appropriate character
4273: * conversations (as stipulated by `tr') along the way.
4274: * Returns a heap-allocated string with all the replacements made.
4275: */
4276: char *
4277: roff_strdup(const struct roff *r, const char *p)
4278: {
1.166 kristaps 4279: const struct roffkv *cp;
1.164 kristaps 4280: char *res;
4281: const char *pp;
4282: size_t ssz, sz;
4283: enum mandoc_esc esc;
4284:
1.167 kristaps 4285: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 4286: return mandoc_strdup(p);
1.164 kristaps 4287: else if ('\0' == *p)
1.277 schwarze 4288: return mandoc_strdup("");
1.164 kristaps 4289:
4290: /*
4291: * Step through each character looking for term matches
4292: * (remember that a `tr' can be invoked with an escape, which is
4293: * a glyph but the escape is multi-character).
4294: * We only do this if the character hash has been initialised
4295: * and the string is >0 length.
4296: */
4297:
4298: res = NULL;
4299: ssz = 0;
4300:
4301: while ('\0' != *p) {
1.289 schwarze 4302: assert((unsigned int)*p < 128);
4303: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 4304: sz = r->xtab[(int)*p].sz;
4305: res = mandoc_realloc(res, ssz + sz + 1);
4306: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4307: ssz += sz;
4308: p++;
4309: continue;
4310: } else if ('\\' != *p) {
4311: res = mandoc_realloc(res, ssz + 2);
4312: res[ssz++] = *p++;
4313: continue;
4314: }
4315:
1.164 kristaps 4316: /* Search for term matches. */
1.167 kristaps 4317: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4318: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4319: break;
4320:
4321: if (NULL != cp) {
4322: /*
4323: * A match has been found.
4324: * Append the match to the array and move
4325: * forward by its keysize.
4326: */
1.207 schwarze 4327: res = mandoc_realloc(res,
4328: ssz + cp->val.sz + 1);
1.166 kristaps 4329: memcpy(res + ssz, cp->val.p, cp->val.sz);
4330: ssz += cp->val.sz;
4331: p += (int)cp->key.sz;
1.164 kristaps 4332: continue;
4333: }
4334:
1.167 kristaps 4335: /*
4336: * Handle escapes carefully: we need to copy
4337: * over just the escape itself, or else we might
4338: * do replacements within the escape itself.
4339: * Make sure to pass along the bogus string.
4340: */
4341: pp = p++;
4342: esc = mandoc_escape(&p, NULL, NULL);
4343: if (ESCAPE_ERROR == esc) {
4344: sz = strlen(pp);
1.164 kristaps 4345: res = mandoc_realloc(res, ssz + sz + 1);
4346: memcpy(res + ssz, pp, sz);
1.167 kristaps 4347: break;
1.164 kristaps 4348: }
1.207 schwarze 4349: /*
4350: * We bail out on bad escapes.
1.167 kristaps 4351: * No need to warn: we already did so when
1.355 schwarze 4352: * roff_expand() was called.
1.167 kristaps 4353: */
4354: sz = (int)(p - pp);
4355: res = mandoc_realloc(res, ssz + sz + 1);
4356: memcpy(res + ssz, pp, sz);
4357: ssz += sz;
1.164 kristaps 4358: }
4359:
4360: res[(int)ssz] = '\0';
1.277 schwarze 4361: return res;
1.227 schwarze 4362: }
4363:
4364: int
4365: roff_getformat(const struct roff *r)
4366: {
4367:
1.277 schwarze 4368: return r->format;
1.174 kristaps 4369: }
4370:
4371: /*
1.207 schwarze 4372: * Find out whether a line is a macro line or not.
1.174 kristaps 4373: * If it is, adjust the current position and return one; if it isn't,
4374: * return zero and don't change the current position.
4375: * If the control character has been set with `.cc', then let that grain
4376: * precedence.
4377: * This is slighly contrary to groff, where using the non-breaking
4378: * control character when `cc' has been invoked will cause the
4379: * non-breaking macro contents to be printed verbatim.
4380: */
4381: int
4382: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4383: {
4384: int pos;
4385:
4386: pos = *ppos;
4387:
1.303 schwarze 4388: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4389: pos++;
1.303 schwarze 4390: else if (r->control != '\0')
1.277 schwarze 4391: return 0;
1.174 kristaps 4392: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4393: pos += 2;
4394: else if ('.' == cp[pos] || '\'' == cp[pos])
4395: pos++;
4396: else
1.277 schwarze 4397: return 0;
1.174 kristaps 4398:
4399: while (' ' == cp[pos] || '\t' == cp[pos])
4400: pos++;
4401:
4402: *ppos = pos;
1.277 schwarze 4403: return 1;
1.74 kristaps 4404: }
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