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