Annotation of mandoc/roff.c, Revision 1.335
1.335 ! schwarze 1: /* $Id: roff.c,v 1.334 2018/08/18 21:37:01 schwarze Exp $ */
1.1 kristaps 2: /*
1.267 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.325 schwarze 4: * Copyright (c) 2010-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
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.
1.1 kristaps 17: */
1.66 kristaps 18: #include "config.h"
1.225 schwarze 19:
20: #include <sys/types.h>
1.30 kristaps 21:
1.67 kristaps 22: #include <assert.h>
1.85 kristaps 23: #include <ctype.h>
1.245 schwarze 24: #include <limits.h>
1.295 schwarze 25: #include <stddef.h>
26: #include <stdint.h>
1.178 schwarze 27: #include <stdio.h>
1.1 kristaps 28: #include <stdlib.h>
1.67 kristaps 29: #include <string.h>
1.1 kristaps 30:
1.67 kristaps 31: #include "mandoc.h"
1.201 schwarze 32: #include "mandoc_aux.h"
1.295 schwarze 33: #include "mandoc_ohash.h"
1.265 schwarze 34: #include "roff.h"
1.226 schwarze 35: #include "libmandoc.h"
1.266 schwarze 36: #include "roff_int.h"
1.109 kristaps 37: #include "libroff.h"
1.82 kristaps 38:
1.170 schwarze 39: /* Maximum number of string expansions per line, to break infinite loops. */
40: #define EXPAND_LIMIT 1000
41:
1.315 schwarze 42: /* Types of definitions of macros and strings. */
43: #define ROFFDEF_USER (1 << 1) /* User-defined. */
44: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
45: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
46: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
47: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
48: ROFFDEF_REN | ROFFDEF_STD)
1.325 schwarze 49: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 50:
1.266 schwarze 51: /* --- data types --------------------------------------------------------- */
52:
1.147 kristaps 53: /*
1.167 kristaps 54: * An incredibly-simple string buffer.
55: */
1.94 kristaps 56: struct roffstr {
1.167 kristaps 57: char *p; /* nil-terminated buffer */
58: size_t sz; /* saved strlen(p) */
1.166 kristaps 59: };
60:
61: /*
1.167 kristaps 62: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 63: */
64: struct roffkv {
65: struct roffstr key;
66: struct roffstr val;
67: struct roffkv *next; /* next in list */
1.94 kristaps 68: };
69:
1.180 schwarze 70: /*
71: * A single number register as part of a singly-linked list.
72: */
73: struct roffreg {
74: struct roffstr key;
1.181 schwarze 75: int val;
1.327 schwarze 76: int step;
1.180 schwarze 77: struct roffreg *next;
78: };
79:
1.295 schwarze 80: /*
81: * Association of request and macro names with token IDs.
82: */
83: struct roffreq {
84: enum roff_tok tok;
85: char name[];
86: };
87:
1.67 kristaps 88: struct roff {
1.128 kristaps 89: struct mparse *parse; /* parse point */
1.296 schwarze 90: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 91: struct roffnode *last; /* leaf of stack */
1.223 schwarze 92: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 93: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 94: struct roffreg *regtab; /* number registers */
1.166 kristaps 95: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 96: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 97: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
98: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 99: const char *current_string; /* value of last called user macro */
1.118 kristaps 100: struct tbl_node *first_tbl; /* first table parsed */
101: struct tbl_node *last_tbl; /* last table parsed */
102: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 103: struct eqn_node *last_eqn; /* equation parser */
104: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 105: int eqn_inline; /* current equation is inline */
1.223 schwarze 106: int options; /* parse options */
107: int rstacksz; /* current size limit of rstack */
108: int rstackpos; /* position in rstack */
1.227 schwarze 109: int format; /* current file in mdoc or man format */
1.273 schwarze 110: int argc; /* number of args of the last macro */
1.223 schwarze 111: char control; /* control character */
1.303 schwarze 112: char escape; /* escape character */
1.79 kristaps 113: };
114:
1.67 kristaps 115: struct roffnode {
1.294 schwarze 116: enum roff_tok tok; /* type of node */
1.67 kristaps 117: struct roffnode *parent; /* up one in stack */
118: int line; /* parse line */
119: int col; /* parse col */
1.106 kristaps 120: char *name; /* node name, e.g. macro name */
1.79 kristaps 121: char *end; /* end-rules: custom token */
122: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 123: int rule; /* current evaluation rule */
1.67 kristaps 124: };
125:
126: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 127: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 128: struct buf *buf, /* input buffer */ \
1.67 kristaps 129: int ln, /* parse line */ \
1.75 kristaps 130: int ppos, /* original pos in buffer */ \
131: int pos, /* current pos in buffer */ \
1.74 kristaps 132: int *offs /* reset offset of buffer data */
1.67 kristaps 133:
134: typedef enum rofferr (*roffproc)(ROFF_ARGS);
135:
136: struct roffmac {
1.79 kristaps 137: roffproc proc; /* process new macro */
138: roffproc text; /* process as child text of macro */
139: roffproc sub; /* process as child of macro */
140: int flags;
141: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 142: };
143:
1.141 kristaps 144: struct predef {
145: const char *name; /* predefined input name */
146: const char *str; /* replacement symbol */
147: };
148:
149: #define PREDEF(__name, __str) \
150: { (__name), (__str) },
151:
1.266 schwarze 152: /* --- function prototypes ------------------------------------------------ */
153:
1.155 kristaps 154: static void roffnode_cleanscope(struct roff *);
155: static void roffnode_pop(struct roff *);
1.294 schwarze 156: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 157: const char *, int, int);
1.321 schwarze 158: static void roff_addtbl(struct roff_man *, struct tbl_node *);
1.311 schwarze 159: static enum rofferr roff_als(ROFF_ARGS);
1.80 kristaps 160: static enum rofferr roff_block(ROFF_ARGS);
161: static enum rofferr roff_block_text(ROFF_ARGS);
162: static enum rofferr roff_block_sub(ROFF_ARGS);
1.296 schwarze 163: static enum rofferr roff_br(ROFF_ARGS);
1.80 kristaps 164: static enum rofferr roff_cblock(ROFF_ARGS);
1.174 kristaps 165: static enum rofferr roff_cc(ROFF_ARGS);
1.195 schwarze 166: static void roff_ccond(struct roff *, int, int);
1.82 kristaps 167: static enum rofferr roff_cond(ROFF_ARGS);
168: static enum rofferr roff_cond_text(ROFF_ARGS);
169: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.92 schwarze 170: static enum rofferr roff_ds(ROFF_ARGS);
1.303 schwarze 171: static enum rofferr roff_ec(ROFF_ARGS);
172: static enum rofferr roff_eo(ROFF_ARGS);
1.238 schwarze 173: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 174: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 175: static int roff_evalnum(struct roff *, int,
176: const char *, int *, int *, int);
177: static int roff_evalpar(struct roff *, int,
1.261 schwarze 178: const char *, int *, int *, int);
1.198 schwarze 179: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 180: static void roff_free1(struct roff *);
1.180 schwarze 181: static void roff_freereg(struct roffreg *);
1.167 kristaps 182: static void roff_freestr(struct roffkv *);
1.212 schwarze 183: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 184: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 185: static int roff_getop(const char *, int *, char *);
1.327 schwarze 186: static int roff_getregn(struct roff *,
187: const char *, size_t, char);
1.273 schwarze 188: static int roff_getregro(const struct roff *,
189: const char *name);
1.325 schwarze 190: static const char *roff_getstrn(struct roff *,
1.315 schwarze 191: const char *, size_t, int *);
1.271 schwarze 192: static int roff_hasregn(const struct roff *,
193: const char *, size_t);
1.251 schwarze 194: static enum rofferr roff_insec(ROFF_ARGS);
1.178 schwarze 195: static enum rofferr roff_it(ROFF_ARGS);
1.103 kristaps 196: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.265 schwarze 197: static void roff_man_alloc1(struct roff_man *);
198: static void roff_man_free1(struct roff_man *);
1.300 schwarze 199: static enum rofferr roff_manyarg(ROFF_ARGS);
1.330 schwarze 200: static enum rofferr roff_nop(ROFF_ARGS);
1.89 kristaps 201: static enum rofferr roff_nr(ROFF_ARGS);
1.297 schwarze 202: static enum rofferr roff_onearg(ROFF_ARGS);
1.294 schwarze 203: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 204: int, int);
1.305 schwarze 205: static enum rofferr roff_parsetext(struct roff *, struct buf *,
206: int, int *);
1.306 schwarze 207: static enum rofferr roff_renamed(ROFF_ARGS);
1.238 schwarze 208: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.122 schwarze 209: static enum rofferr roff_rm(ROFF_ARGS);
1.306 schwarze 210: static enum rofferr roff_rn(ROFF_ARGS);
1.203 schwarze 211: static enum rofferr roff_rr(ROFF_ARGS);
1.326 schwarze 212: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 213: size_t, int, char, int);
1.94 kristaps 214: static void roff_setstr(struct roff *,
1.106 kristaps 215: const char *, const char *, int);
1.207 schwarze 216: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 217: size_t, const char *, size_t, int);
1.105 kristaps 218: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 219: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 220: static enum rofferr roff_Dd(ROFF_ARGS);
1.109 kristaps 221: static enum rofferr roff_TE(ROFF_ARGS);
222: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 223: static enum rofferr roff_EQ(ROFF_ARGS);
224: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 225: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 226: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 227: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 228:
1.266 schwarze 229: /* --- constant data ------------------------------------------------------ */
230:
1.261 schwarze 231: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
232: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
233:
1.294 schwarze 234: const char *__roff_name[MAN_MAX + 1] = {
1.305 schwarze 235: "br", "ce", "ft", "ll",
1.312 schwarze 236: "mc", "po", "rj", "sp",
237: "ta", "ti", NULL,
1.294 schwarze 238: "ab", "ad", "af", "aln",
239: "als", "am", "am1", "ami",
240: "ami1", "as", "as1", "asciify",
241: "backtrace", "bd", "bleedat", "blm",
242: "box", "boxa", "bp", "BP",
243: "break", "breakchar", "brnl", "brp",
1.305 schwarze 244: "brpnl", "c2", "cc",
1.294 schwarze 245: "cf", "cflags", "ch", "char",
246: "chop", "class", "close", "CL",
247: "color", "composite", "continue", "cp",
248: "cropat", "cs", "cu", "da",
249: "dch", "Dd", "de", "de1",
250: "defcolor", "dei", "dei1", "device",
251: "devicem", "di", "do", "ds",
252: "ds1", "dwh", "dt", "ec",
253: "ecr", "ecs", "el", "em",
254: "EN", "eo", "EP", "EQ",
255: "errprint", "ev", "evc", "ex",
256: "fallback", "fam", "fc", "fchar",
257: "fcolor", "fdeferlig", "feature", "fkern",
258: "fl", "flig", "fp", "fps",
259: "fschar", "fspacewidth", "fspecial", "ftr",
260: "fzoom", "gcolor", "hc", "hcode",
261: "hidechar", "hla", "hlm", "hpf",
262: "hpfa", "hpfcode", "hw", "hy",
263: "hylang", "hylen", "hym", "hypp",
264: "hys", "ie", "if", "ig",
265: "index", "it", "itc", "IX",
266: "kern", "kernafter", "kernbefore", "kernpair",
267: "lc", "lc_ctype", "lds", "length",
268: "letadj", "lf", "lg", "lhang",
269: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 270: "ls", "lsm", "lt",
1.294 schwarze 271: "mediasize", "minss", "mk", "mso",
272: "na", "ne", "nh", "nhychar",
273: "nm", "nn", "nop", "nr",
274: "nrf", "nroff", "ns", "nx",
275: "open", "opena", "os", "output",
276: "padj", "papersize", "pc", "pev",
277: "pi", "PI", "pl", "pm",
1.312 schwarze 278: "pn", "pnr", "ps",
1.294 schwarze 279: "psbb", "pshape", "pso", "ptr",
280: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 281: "return", "rfschar", "rhang",
1.294 schwarze 282: "rm", "rn", "rnn", "rr",
283: "rs", "rt", "schar", "sentchar",
284: "shc", "shift", "sizes", "so",
285: "spacewidth", "special", "spreadwarn", "ss",
286: "sty", "substring", "sv", "sy",
1.300 schwarze 287: "T&", "tc", "TE",
1.301 schwarze 288: "TH", "tkf", "tl",
1.294 schwarze 289: "tm", "tm1", "tmc", "tr",
290: "track", "transchar", "trf", "trimat",
291: "trin", "trnt", "troff", "TS",
292: "uf", "ul", "unformat", "unwatch",
293: "unwatchn", "vpt", "vs", "warn",
294: "warnscale", "watch", "watchlength", "watchn",
295: "wh", "while", "write", "writec",
296: "writem", "xflag", ".", NULL,
1.306 schwarze 297: NULL, "text",
1.294 schwarze 298: "Dd", "Dt", "Os", "Sh",
299: "Ss", "Pp", "D1", "Dl",
300: "Bd", "Ed", "Bl", "El",
301: "It", "Ad", "An", "Ap",
302: "Ar", "Cd", "Cm", "Dv",
303: "Er", "Ev", "Ex", "Fa",
304: "Fd", "Fl", "Fn", "Ft",
305: "Ic", "In", "Li", "Nd",
306: "Nm", "Op", "Ot", "Pa",
307: "Rv", "St", "Va", "Vt",
308: "Xr", "%A", "%B", "%D",
309: "%I", "%J", "%N", "%O",
310: "%P", "%R", "%T", "%V",
311: "Ac", "Ao", "Aq", "At",
312: "Bc", "Bf", "Bo", "Bq",
313: "Bsx", "Bx", "Db", "Dc",
314: "Do", "Dq", "Ec", "Ef",
315: "Em", "Eo", "Fx", "Ms",
316: "No", "Ns", "Nx", "Ox",
317: "Pc", "Pf", "Po", "Pq",
318: "Qc", "Ql", "Qo", "Qq",
319: "Re", "Rs", "Sc", "So",
320: "Sq", "Sm", "Sx", "Sy",
321: "Tn", "Ux", "Xc", "Xo",
322: "Fo", "Fc", "Oo", "Oc",
323: "Bk", "Ek", "Bt", "Hf",
324: "Fr", "Ud", "Lb", "Lp",
325: "Lk", "Mt", "Brq", "Bro",
326: "Brc", "%C", "Es", "En",
1.299 schwarze 327: "Dx", "%Q", "%U", "Ta",
328: NULL,
1.294 schwarze 329: "TH", "SH", "SS", "TP",
1.332 schwarze 330: "TQ",
1.294 schwarze 331: "LP", "PP", "P", "IP",
332: "HP", "SM", "SB", "BI",
333: "IB", "BR", "RB", "R",
334: "B", "I", "IR", "RI",
1.299 schwarze 335: "nf", "fi",
1.294 schwarze 336: "RE", "RS", "DT", "UC",
1.297 schwarze 337: "PD", "AT", "in",
1.333 schwarze 338: "SY", "YS", "OP",
339: "EX", "EE", "UR",
1.317 schwarze 340: "UE", "MT", "ME", NULL
1.294 schwarze 341: };
342: const char *const *roff_name = __roff_name;
343:
344: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 345: { roff_br, NULL, NULL, 0 }, /* br */
1.305 schwarze 346: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.297 schwarze 347: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 348: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 349: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.312 schwarze 350: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 351: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 352: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 353: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 354: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 355: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 356: { roff_unsupp, NULL, NULL, 0 }, /* ab */
357: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
358: { roff_line_ignore, NULL, NULL, 0 }, /* af */
359: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 360: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 361: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
362: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
363: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
364: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
365: { roff_ds, NULL, NULL, 0 }, /* as */
366: { roff_ds, NULL, NULL, 0 }, /* as1 */
367: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
368: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
369: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
370: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
371: { roff_unsupp, NULL, NULL, 0 }, /* blm */
372: { roff_unsupp, NULL, NULL, 0 }, /* box */
373: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
374: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
375: { roff_unsupp, NULL, NULL, 0 }, /* BP */
376: { roff_unsupp, NULL, NULL, 0 }, /* break */
377: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
378: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 379: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 380: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
381: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
382: { roff_cc, NULL, NULL, 0 }, /* cc */
383: { roff_insec, NULL, NULL, 0 }, /* cf */
384: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
385: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
386: { roff_unsupp, NULL, NULL, 0 }, /* char */
387: { roff_unsupp, NULL, NULL, 0 }, /* chop */
388: { roff_line_ignore, NULL, NULL, 0 }, /* class */
389: { roff_insec, NULL, NULL, 0 }, /* close */
390: { roff_unsupp, NULL, NULL, 0 }, /* CL */
391: { roff_line_ignore, NULL, NULL, 0 }, /* color */
392: { roff_unsupp, NULL, NULL, 0 }, /* composite */
393: { roff_unsupp, NULL, NULL, 0 }, /* continue */
394: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
395: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
396: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
397: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
398: { roff_unsupp, NULL, NULL, 0 }, /* da */
399: { roff_unsupp, NULL, NULL, 0 }, /* dch */
400: { roff_Dd, NULL, NULL, 0 }, /* Dd */
401: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
402: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
403: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
404: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
405: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
406: { roff_unsupp, NULL, NULL, 0 }, /* device */
407: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
408: { roff_unsupp, NULL, NULL, 0 }, /* di */
409: { roff_unsupp, NULL, NULL, 0 }, /* do */
410: { roff_ds, NULL, NULL, 0 }, /* ds */
411: { roff_ds, NULL, NULL, 0 }, /* ds1 */
412: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
413: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 414: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 415: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
416: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
417: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
418: { roff_unsupp, NULL, NULL, 0 }, /* em */
419: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 420: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 421: { roff_unsupp, NULL, NULL, 0 }, /* EP */
422: { roff_EQ, NULL, NULL, 0 }, /* EQ */
423: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
424: { roff_unsupp, NULL, NULL, 0 }, /* ev */
425: { roff_unsupp, NULL, NULL, 0 }, /* evc */
426: { roff_unsupp, NULL, NULL, 0 }, /* ex */
427: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
428: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
429: { roff_unsupp, NULL, NULL, 0 }, /* fc */
430: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
431: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
432: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
433: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
434: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
435: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
436: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
437: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
438: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
439: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
440: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
441: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
442: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
443: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
444: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
445: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
446: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
447: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
448: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
449: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
450: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
451: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
452: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
453: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
454: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
455: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
456: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
457: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
458: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
459: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
460: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
461: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
462: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
463: { roff_unsupp, NULL, NULL, 0 }, /* index */
464: { roff_it, NULL, NULL, 0 }, /* it */
465: { roff_unsupp, NULL, NULL, 0 }, /* itc */
466: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
467: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
468: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
469: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
470: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
471: { roff_unsupp, NULL, NULL, 0 }, /* lc */
472: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
473: { roff_unsupp, NULL, NULL, 0 }, /* lds */
474: { roff_unsupp, NULL, NULL, 0 }, /* length */
475: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
476: { roff_insec, NULL, NULL, 0 }, /* lf */
477: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
478: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
479: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
480: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
481: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
482: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
483: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
484: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
485: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
486: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
487: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
488: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
489: { roff_insec, NULL, NULL, 0 }, /* mso */
490: { roff_line_ignore, NULL, NULL, 0 }, /* na */
491: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
492: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
493: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
494: { roff_unsupp, NULL, NULL, 0 }, /* nm */
495: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 496: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 497: { roff_nr, NULL, NULL, 0 }, /* nr */
498: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
499: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
500: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
501: { roff_insec, NULL, NULL, 0 }, /* nx */
502: { roff_insec, NULL, NULL, 0 }, /* open */
503: { roff_insec, NULL, NULL, 0 }, /* opena */
504: { roff_line_ignore, NULL, NULL, 0 }, /* os */
505: { roff_unsupp, NULL, NULL, 0 }, /* output */
506: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
507: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
508: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
509: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
510: { roff_insec, NULL, NULL, 0 }, /* pi */
511: { roff_unsupp, NULL, NULL, 0 }, /* PI */
512: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
513: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
514: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
515: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
516: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
517: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
518: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
519: { roff_insec, NULL, NULL, 0 }, /* pso */
520: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
521: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
522: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
523: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
524: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
525: { roff_unsupp, NULL, NULL, 0 }, /* return */
526: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
527: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
528: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 529: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 530: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
531: { roff_rr, NULL, NULL, 0 }, /* rr */
532: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
533: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
534: { roff_unsupp, NULL, NULL, 0 }, /* schar */
535: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
536: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
537: { roff_unsupp, NULL, NULL, 0 }, /* shift */
538: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
539: { roff_so, NULL, NULL, 0 }, /* so */
540: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
541: { roff_line_ignore, NULL, NULL, 0 }, /* special */
542: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
543: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
544: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
545: { roff_unsupp, NULL, NULL, 0 }, /* substring */
546: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
547: { roff_insec, NULL, NULL, 0 }, /* sy */
548: { roff_T_, NULL, NULL, 0 }, /* T& */
549: { roff_unsupp, NULL, NULL, 0 }, /* tc */
550: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 551: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 552: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
553: { roff_unsupp, NULL, NULL, 0 }, /* tl */
554: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
555: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
556: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
557: { roff_tr, NULL, NULL, 0 }, /* tr */
558: { roff_line_ignore, NULL, NULL, 0 }, /* track */
559: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
560: { roff_insec, NULL, NULL, 0 }, /* trf */
561: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
562: { roff_unsupp, NULL, NULL, 0 }, /* trin */
563: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
564: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
565: { roff_TS, NULL, NULL, 0 }, /* TS */
566: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
567: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
568: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
569: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
570: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
571: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
572: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
573: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
574: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
575: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
576: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
577: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
578: { roff_unsupp, NULL, NULL, 0 }, /* wh */
579: { roff_unsupp, NULL, NULL, 0 }, /* while */
580: { roff_insec, NULL, NULL, 0 }, /* write */
581: { roff_insec, NULL, NULL, 0 }, /* writec */
582: { roff_insec, NULL, NULL, 0 }, /* writem */
583: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
584: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 585: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 586: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 587: };
588:
1.141 kristaps 589: /* Array of injected predefined strings. */
590: #define PREDEFS_MAX 38
591: static const struct predef predefs[PREDEFS_MAX] = {
592: #include "predefs.in"
593: };
594:
1.305 schwarze 595: static int roffce_lines; /* number of input lines to center */
596: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 597: static int roffit_lines; /* number of lines to delay */
598: static char *roffit_macro; /* nil-terminated macro line */
599:
1.207 schwarze 600:
1.266 schwarze 601: /* --- request table ------------------------------------------------------ */
602:
1.295 schwarze 603: struct ohash *
604: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 605: {
1.295 schwarze 606: struct ohash *htab;
607: struct roffreq *req;
608: enum roff_tok tok;
609: size_t sz;
610: unsigned int slot;
1.85 kristaps 611:
1.295 schwarze 612: htab = mandoc_malloc(sizeof(*htab));
613: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 614:
1.295 schwarze 615: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 616: if (roff_name[tok] == NULL)
617: continue;
1.295 schwarze 618: sz = strlen(roff_name[tok]);
619: req = mandoc_malloc(sizeof(*req) + sz + 1);
620: req->tok = tok;
621: memcpy(req->name, roff_name[tok], sz + 1);
622: slot = ohash_qlookup(htab, req->name);
623: ohash_insert(htab, slot, req);
1.85 kristaps 624: }
1.295 schwarze 625: return htab;
1.85 kristaps 626: }
627:
1.295 schwarze 628: void
629: roffhash_free(struct ohash *htab)
1.67 kristaps 630: {
1.295 schwarze 631: struct roffreq *req;
632: unsigned int slot;
1.67 kristaps 633:
1.295 schwarze 634: if (htab == NULL)
635: return;
636: for (req = ohash_first(htab, &slot); req != NULL;
637: req = ohash_next(htab, &slot))
638: free(req);
639: ohash_delete(htab);
640: free(htab);
641: }
642:
643: enum roff_tok
644: roffhash_find(struct ohash *htab, const char *name, size_t sz)
645: {
646: struct roffreq *req;
647: const char *end;
648:
649: if (sz) {
650: end = name + sz;
651: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
652: } else
653: req = ohash_find(htab, ohash_qlookup(htab, name));
654: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 655: }
656:
1.266 schwarze 657: /* --- stack of request blocks -------------------------------------------- */
658:
1.67 kristaps 659: /*
660: * Pop the current node off of the stack of roff instructions currently
661: * pending.
662: */
663: static void
664: roffnode_pop(struct roff *r)
665: {
666: struct roffnode *p;
667:
1.75 kristaps 668: assert(r->last);
1.207 schwarze 669: p = r->last;
1.82 kristaps 670:
1.75 kristaps 671: r->last = r->last->parent;
1.106 kristaps 672: free(p->name);
673: free(p->end);
1.67 kristaps 674: free(p);
675: }
676:
677: /*
678: * Push a roff node onto the instruction stack. This must later be
679: * removed with roffnode_pop().
680: */
1.98 schwarze 681: static void
1.294 schwarze 682: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 683: int line, int col)
1.67 kristaps 684: {
685: struct roffnode *p;
686:
1.98 schwarze 687: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 688: p->tok = tok;
1.106 kristaps 689: if (name)
690: p->name = mandoc_strdup(name);
1.67 kristaps 691: p->parent = r->last;
692: p->line = line;
693: p->col = col;
1.198 schwarze 694: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 695:
696: r->last = p;
697: }
698:
1.266 schwarze 699: /* --- roff parser state data management ---------------------------------- */
700:
1.67 kristaps 701: static void
702: roff_free1(struct roff *r)
703: {
1.176 schwarze 704: struct tbl_node *tbl;
1.167 kristaps 705: int i;
1.67 kristaps 706:
1.176 schwarze 707: while (NULL != (tbl = r->first_tbl)) {
708: r->first_tbl = tbl->next;
709: tbl_free(tbl);
1.109 kristaps 710: }
1.113 kristaps 711: r->first_tbl = r->last_tbl = r->tbl = NULL;
712:
1.319 schwarze 713: if (r->last_eqn != NULL)
714: eqn_free(r->last_eqn);
715: r->last_eqn = r->eqn = NULL;
1.125 kristaps 716:
1.67 kristaps 717: while (r->last)
718: roffnode_pop(r);
1.109 kristaps 719:
1.223 schwarze 720: free (r->rstack);
721: r->rstack = NULL;
722: r->rstacksz = 0;
723: r->rstackpos = -1;
724:
725: roff_freereg(r->regtab);
726: r->regtab = NULL;
727:
1.167 kristaps 728: roff_freestr(r->strtab);
1.306 schwarze 729: roff_freestr(r->rentab);
1.167 kristaps 730: roff_freestr(r->xmbtab);
1.306 schwarze 731: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 732:
733: if (r->xtab)
734: for (i = 0; i < 128; i++)
735: free(r->xtab[i].p);
736: free(r->xtab);
737: r->xtab = NULL;
1.67 kristaps 738: }
739:
740: void
741: roff_reset(struct roff *r)
742: {
743: roff_free1(r);
1.227 schwarze 744: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 745: r->control = '\0';
746: r->escape = '\\';
1.307 schwarze 747: roffce_lines = 0;
748: roffce_node = NULL;
749: roffit_lines = 0;
750: roffit_macro = NULL;
1.67 kristaps 751: }
752:
753: void
754: roff_free(struct roff *r)
755: {
756: roff_free1(r);
1.295 schwarze 757: roffhash_free(r->reqtab);
1.67 kristaps 758: free(r);
759: }
760:
761: struct roff *
1.279 schwarze 762: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 763: {
764: struct roff *r;
765:
1.98 schwarze 766: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 767: r->parse = parse;
1.328 schwarze 768: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.199 schwarze 769: r->options = options;
1.227 schwarze 770: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 771: r->rstackpos = -1;
1.303 schwarze 772: r->escape = '\\';
1.277 schwarze 773: return r;
1.265 schwarze 774: }
775:
1.266 schwarze 776: /* --- syntax tree state data management ---------------------------------- */
777:
1.265 schwarze 778: static void
779: roff_man_free1(struct roff_man *man)
780: {
781:
1.266 schwarze 782: if (man->first != NULL)
783: roff_node_delete(man, man->first);
1.265 schwarze 784: free(man->meta.msec);
785: free(man->meta.vol);
786: free(man->meta.os);
787: free(man->meta.arch);
788: free(man->meta.title);
789: free(man->meta.name);
790: free(man->meta.date);
791: }
792:
793: static void
794: roff_man_alloc1(struct roff_man *man)
795: {
796:
797: memset(&man->meta, 0, sizeof(man->meta));
798: man->first = mandoc_calloc(1, sizeof(*man->first));
799: man->first->type = ROFFT_ROOT;
800: man->last = man->first;
801: man->last_es = NULL;
802: man->flags = 0;
803: man->macroset = MACROSET_NONE;
804: man->lastsec = man->lastnamed = SEC_NONE;
805: man->next = ROFF_NEXT_CHILD;
806: }
807:
808: void
809: roff_man_reset(struct roff_man *man)
810: {
811:
812: roff_man_free1(man);
813: roff_man_alloc1(man);
814: }
815:
816: void
817: roff_man_free(struct roff_man *man)
818: {
819:
820: roff_man_free1(man);
821: free(man);
822: }
823:
824: struct roff_man *
825: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.316 schwarze 826: const char *os_s, int quick)
1.265 schwarze 827: {
828: struct roff_man *man;
829:
830: man = mandoc_calloc(1, sizeof(*man));
831: man->parse = parse;
832: man->roff = roff;
1.316 schwarze 833: man->os_s = os_s;
1.265 schwarze 834: man->quick = quick;
835: roff_man_alloc1(man);
1.296 schwarze 836: roff->man = man;
1.277 schwarze 837: return man;
1.67 kristaps 838: }
839:
1.266 schwarze 840: /* --- syntax tree handling ----------------------------------------------- */
841:
842: struct roff_node *
843: roff_node_alloc(struct roff_man *man, int line, int pos,
844: enum roff_type type, int tok)
845: {
846: struct roff_node *n;
847:
848: n = mandoc_calloc(1, sizeof(*n));
849: n->line = line;
850: n->pos = pos;
851: n->tok = tok;
852: n->type = type;
853: n->sec = man->lastsec;
854:
855: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 856: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 857: else
1.285 schwarze 858: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 859: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 860: n->flags |= NODE_LINE;
1.266 schwarze 861: man->flags &= ~MDOC_NEWLINE;
862:
1.277 schwarze 863: return n;
1.266 schwarze 864: }
865:
866: void
867: roff_node_append(struct roff_man *man, struct roff_node *n)
868: {
869:
870: switch (man->next) {
871: case ROFF_NEXT_SIBLING:
1.281 schwarze 872: if (man->last->next != NULL) {
873: n->next = man->last->next;
874: man->last->next->prev = n;
875: } else
876: man->last->parent->last = n;
1.266 schwarze 877: man->last->next = n;
878: n->prev = man->last;
879: n->parent = man->last->parent;
880: break;
881: case ROFF_NEXT_CHILD:
1.287 schwarze 882: if (man->last->child != NULL) {
883: n->next = man->last->child;
884: man->last->child->prev = n;
885: } else
886: man->last->last = n;
1.266 schwarze 887: man->last->child = n;
888: n->parent = man->last;
889: break;
890: default:
891: abort();
892: }
1.282 schwarze 893: man->last = n;
1.266 schwarze 894:
895: switch (n->type) {
896: case ROFFT_HEAD:
897: n->parent->head = n;
898: break;
899: case ROFFT_BODY:
1.282 schwarze 900: if (n->end != ENDBODY_NOT)
901: return;
1.266 schwarze 902: n->parent->body = n;
903: break;
904: case ROFFT_TAIL:
905: n->parent->tail = n;
906: break;
907: default:
1.282 schwarze 908: return;
1.266 schwarze 909: }
1.282 schwarze 910:
911: /*
912: * Copy over the normalised-data pointer of our parent. Not
913: * everybody has one, but copying a null pointer is fine.
914: */
915:
916: n->norm = n->parent->norm;
917: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 918: }
919:
1.267 schwarze 920: void
921: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
922: {
923: struct roff_node *n;
924:
925: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
926: n->string = roff_strdup(man->roff, word);
927: roff_node_append(man, n);
1.286 schwarze 928: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 929: man->next = ROFF_NEXT_SIBLING;
930: }
931:
932: void
933: roff_word_append(struct roff_man *man, const char *word)
934: {
935: struct roff_node *n;
936: char *addstr, *newstr;
937:
938: n = man->last;
939: addstr = roff_strdup(man->roff, word);
940: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
941: free(addstr);
942: free(n->string);
943: n->string = newstr;
944: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 945: }
946:
947: void
948: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
949: {
950: struct roff_node *n;
951:
952: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
953: roff_node_append(man, n);
954: man->next = ROFF_NEXT_CHILD;
955: }
956:
957: struct roff_node *
958: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
959: {
960: struct roff_node *n;
961:
962: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
963: roff_node_append(man, n);
964: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 965: return n;
1.267 schwarze 966: }
967:
1.266 schwarze 968: struct roff_node *
969: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
970: {
971: struct roff_node *n;
972:
973: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
974: roff_node_append(man, n);
975: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 976: return n;
1.266 schwarze 977: }
978:
979: struct roff_node *
980: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
981: {
982: struct roff_node *n;
983:
984: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
985: roff_node_append(man, n);
986: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 987: return n;
1.267 schwarze 988: }
989:
1.321 schwarze 990: static void
991: roff_addtbl(struct roff_man *man, struct tbl_node *tbl)
1.267 schwarze 992: {
993: struct roff_node *n;
1.321 schwarze 994: const struct tbl_span *span;
1.267 schwarze 995:
996: if (man->macroset == MACROSET_MAN)
1.302 schwarze 997: man_breakscope(man, ROFF_TS);
1.321 schwarze 998: while ((span = tbl_span(tbl)) != NULL) {
999: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1000: n->span = span;
1001: roff_node_append(man, n);
1002: n->flags |= NODE_VALID | NODE_ENDED;
1003: man->next = ROFF_NEXT_SIBLING;
1004: }
1.266 schwarze 1005: }
1006:
1007: void
1008: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1009: {
1010:
1011: /* Adjust siblings. */
1012:
1013: if (n->prev)
1014: n->prev->next = n->next;
1015: if (n->next)
1016: n->next->prev = n->prev;
1017:
1018: /* Adjust parent. */
1019:
1020: if (n->parent != NULL) {
1021: if (n->parent->child == n)
1022: n->parent->child = n->next;
1023: if (n->parent->last == n)
1024: n->parent->last = n->prev;
1025: }
1026:
1027: /* Adjust parse point. */
1028:
1029: if (man == NULL)
1030: return;
1031: if (man->last == n) {
1032: if (n->prev == NULL) {
1033: man->last = n->parent;
1034: man->next = ROFF_NEXT_CHILD;
1035: } else {
1036: man->last = n->prev;
1037: man->next = ROFF_NEXT_SIBLING;
1038: }
1039: }
1040: if (man->first == n)
1041: man->first = NULL;
1042: }
1043:
1044: void
1045: roff_node_free(struct roff_node *n)
1046: {
1047:
1048: if (n->args != NULL)
1049: mdoc_argv_free(n->args);
1050: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1051: free(n->norm);
1.319 schwarze 1052: if (n->eqn != NULL)
1053: eqn_box_free(n->eqn);
1.266 schwarze 1054: free(n->string);
1055: free(n);
1056: }
1057:
1058: void
1059: roff_node_delete(struct roff_man *man, struct roff_node *n)
1060: {
1061:
1062: while (n->child != NULL)
1063: roff_node_delete(man, n->child);
1064: roff_node_unlink(man, n);
1065: roff_node_free(n);
1.269 schwarze 1066: }
1067:
1068: void
1069: deroff(char **dest, const struct roff_node *n)
1070: {
1071: char *cp;
1072: size_t sz;
1073:
1074: if (n->type != ROFFT_TEXT) {
1075: for (n = n->child; n != NULL; n = n->next)
1076: deroff(dest, n);
1077: return;
1078: }
1079:
1.288 schwarze 1080: /* Skip leading whitespace. */
1.269 schwarze 1081:
1.288 schwarze 1082: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1083: if (cp[0] == '\\' && cp[1] != '\0' &&
1084: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1085: cp++;
1.288 schwarze 1086: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1087: break;
1088: }
1089:
1.289 schwarze 1090: /* Skip trailing backslash. */
1091:
1092: sz = strlen(cp);
1.290 schwarze 1093: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1094: sz--;
1095:
1.269 schwarze 1096: /* Skip trailing whitespace. */
1097:
1.289 schwarze 1098: for (; sz; sz--)
1.269 schwarze 1099: if ( ! isspace((unsigned char)cp[sz-1]))
1100: break;
1101:
1102: /* Skip empty strings. */
1103:
1104: if (sz == 0)
1105: return;
1106:
1107: if (*dest == NULL) {
1108: *dest = mandoc_strndup(cp, sz);
1109: return;
1110: }
1111:
1112: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1113: free(*dest);
1114: *dest = cp;
1.266 schwarze 1115: }
1116:
1117: /* --- main functions of the roff parser ---------------------------------- */
1118:
1.94 kristaps 1119: /*
1.206 schwarze 1120: * In the current line, expand escape sequences that tend to get
1121: * used in numerical expressions and conditional requests.
1122: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1123: */
1.172 schwarze 1124: static enum rofferr
1.238 schwarze 1125: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1126: {
1.208 schwarze 1127: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1128: struct roff_node *n; /* used for header comments */
1.205 schwarze 1129: const char *start; /* start of the string to process */
1.209 schwarze 1130: char *stesc; /* start of an escape sequence ('\\') */
1.328 schwarze 1131: char *ep; /* end of comment string */
1.108 schwarze 1132: const char *stnam; /* start of the name, after "[(*" */
1133: const char *cp; /* end of the name, e.g. before ']' */
1134: const char *res; /* the string to be substituted */
1.238 schwarze 1135: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1136: size_t maxl; /* expected length of the escape name */
1137: size_t naml; /* actual length of the escape name */
1.237 schwarze 1138: enum mandoc_esc esc; /* type of the escape sequence */
1139: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1140: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1141: int npos; /* position in numeric expression */
1.218 schwarze 1142: int arg_complete; /* argument not interrupted by eol */
1.303 schwarze 1143: int done; /* no more input available */
1.315 schwarze 1144: int deftype; /* type of definition to paste */
1.323 schwarze 1145: int rcsid; /* kind of RCS id seen */
1.327 schwarze 1146: char sign; /* increment number register */
1.206 schwarze 1147: char term; /* character terminating the escape */
1.94 kristaps 1148:
1.303 schwarze 1149: /* Search forward for comments. */
1150:
1151: done = 0;
1152: start = buf->buf + pos;
1153: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1154: if (stesc[0] != r->escape || stesc[1] == '\0')
1155: continue;
1156: stesc++;
1157: if (*stesc != '"' && *stesc != '#')
1158: continue;
1.313 schwarze 1159:
1160: /* Comment found, look for RCS id. */
1161:
1.323 schwarze 1162: rcsid = 0;
1.313 schwarze 1163: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1164: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1165: cp += 8;
1166: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1167: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1168: cp += 7;
1169: }
1170: if (cp != NULL &&
1171: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1172: strchr(cp, '$') != NULL) {
1.323 schwarze 1173: if (r->man->meta.rcsids & rcsid)
1.314 schwarze 1174: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1175: ln, stesc + 1 - buf->buf, stesc + 1);
1.323 schwarze 1176: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1177: }
1.313 schwarze 1178:
1179: /* Handle trailing whitespace. */
1180:
1.328 schwarze 1181: ep = strchr(stesc--, '\0') - 1;
1182: if (*ep == '\n') {
1.303 schwarze 1183: done = 1;
1.328 schwarze 1184: ep--;
1.303 schwarze 1185: }
1.328 schwarze 1186: if (*ep == ' ' || *ep == '\t')
1.303 schwarze 1187: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1.328 schwarze 1188: ln, ep - buf->buf, NULL);
1189:
1190: /*
1191: * Save comments preceding the title macro
1192: * in the syntax tree.
1193: */
1194:
1195: if (r->format == 0) {
1196: while (*ep == ' ' || *ep == '\t')
1197: ep--;
1198: ep[1] = '\0';
1199: n = roff_node_alloc(r->man,
1200: ln, stesc + 1 - buf->buf,
1201: ROFFT_COMMENT, TOKEN_NONE);
1202: n->string = mandoc_strdup(stesc + 2);
1203: roff_node_append(r->man, n);
1204: n->flags |= NODE_VALID | NODE_ENDED;
1205: r->man->next = ROFF_NEXT_SIBLING;
1206: }
1207:
1.334 schwarze 1208: /* Line continuation with comment. */
1209:
1210: if (stesc[1] == '#') {
1211: *stesc = '\0';
1212: return ROFF_APPEND;
1213: }
1214:
1215: /* Discard normal comments. */
1.328 schwarze 1216:
1.335 ! schwarze 1217: while (stesc > start && stesc[-1] == ' ' &&
! 1218: (stesc == start + 1 || stesc[-2] != '\\'))
1.303 schwarze 1219: stesc--;
1220: *stesc = '\0';
1221: break;
1222: }
1223: if (stesc == start)
1224: return ROFF_CONT;
1225: stesc--;
1226:
1227: /* Notice the end of the input. */
1228:
1229: if (*stesc == '\n') {
1230: *stesc-- = '\0';
1231: done = 1;
1232: }
1233:
1.170 schwarze 1234: expand_count = 0;
1.303 schwarze 1235: while (stesc >= start) {
1.170 schwarze 1236:
1.205 schwarze 1237: /* Search backwards for the next backslash. */
1238:
1.303 schwarze 1239: if (*stesc != r->escape) {
1240: if (*stesc == '\\') {
1241: *stesc = '\0';
1242: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1243: buf->buf, stesc + 1) + 1;
1244: start = nbuf + pos;
1245: stesc = nbuf + (stesc - buf->buf);
1246: free(buf->buf);
1247: buf->buf = nbuf;
1248: }
1249: stesc--;
1.205 schwarze 1250: continue;
1.303 schwarze 1251: }
1.205 schwarze 1252:
1253: /* If it is escaped, skip it. */
1254:
1255: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1256: if (*cp != r->escape)
1.205 schwarze 1257: break;
1258:
1.238 schwarze 1259: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1260: while (stesc > cp)
1261: *stesc-- = '\\';
1.205 schwarze 1262: continue;
1.303 schwarze 1263: } else if (stesc[1] != '\0') {
1264: *stesc = '\\';
1265: } else {
1266: *stesc-- = '\0';
1267: if (done)
1268: continue;
1269: else
1270: return ROFF_APPEND;
1.205 schwarze 1271: }
1.108 schwarze 1272:
1.206 schwarze 1273: /* Decide whether to expand or to check only. */
1.108 schwarze 1274:
1.206 schwarze 1275: term = '\0';
1.205 schwarze 1276: cp = stesc + 1;
1.181 schwarze 1277: switch (*cp) {
1.207 schwarze 1278: case '*':
1.181 schwarze 1279: res = NULL;
1280: break;
1.207 schwarze 1281: case 'B':
1282: case 'w':
1.206 schwarze 1283: term = cp[1];
1284: /* FALLTHROUGH */
1.207 schwarze 1285: case 'n':
1.327 schwarze 1286: sign = cp[1];
1287: if (sign == '+' || sign == '-')
1288: cp++;
1.181 schwarze 1289: res = ubuf;
1290: break;
1291: default:
1.237 schwarze 1292: esc = mandoc_escape(&cp, &stnam, &inaml);
1293: if (esc == ESCAPE_ERROR ||
1294: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1295: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1296: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1297: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1298: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1299: stesc--;
1.205 schwarze 1300: continue;
1.152 kristaps 1301: }
1302:
1.205 schwarze 1303: if (EXPAND_LIMIT < ++expand_count) {
1304: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1305: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1306: return ROFF_IGN;
1.205 schwarze 1307: }
1.108 schwarze 1308:
1309: /*
1310: * The third character decides the length
1.181 schwarze 1311: * of the name of the string or register.
1.108 schwarze 1312: * Save a pointer to the name.
1313: */
1314:
1.238 schwarze 1315: if (term == '\0') {
1.206 schwarze 1316: switch (*++cp) {
1.207 schwarze 1317: case '\0':
1.206 schwarze 1318: maxl = 0;
1319: break;
1.207 schwarze 1320: case '(':
1.206 schwarze 1321: cp++;
1322: maxl = 2;
1323: break;
1.207 schwarze 1324: case '[':
1.206 schwarze 1325: cp++;
1326: term = ']';
1327: maxl = 0;
1328: break;
1329: default:
1330: maxl = 1;
1331: break;
1332: }
1333: } else {
1334: cp += 2;
1.94 kristaps 1335: maxl = 0;
1336: }
1.108 schwarze 1337: stnam = cp;
1.94 kristaps 1338:
1.108 schwarze 1339: /* Advance to the end of the name. */
1.94 kristaps 1340:
1.253 schwarze 1341: naml = 0;
1.218 schwarze 1342: arg_complete = 1;
1.253 schwarze 1343: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1344: if (*cp == '\0') {
1.219 schwarze 1345: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1346: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1347: arg_complete = 0;
1.206 schwarze 1348: break;
1.153 kristaps 1349: }
1.238 schwarze 1350: if (maxl == 0 && *cp == term) {
1.206 schwarze 1351: cp++;
1.253 schwarze 1352: break;
1353: }
1354: if (*cp++ != '\\' || stesc[1] != 'w') {
1355: naml++;
1356: continue;
1357: }
1358: switch (mandoc_escape(&cp, NULL, NULL)) {
1359: case ESCAPE_SPECIAL:
1360: case ESCAPE_UNICODE:
1361: case ESCAPE_NUMBERED:
1362: case ESCAPE_OVERSTRIKE:
1363: naml++;
1364: break;
1365: default:
1.94 kristaps 1366: break;
1.206 schwarze 1367: }
1.94 kristaps 1368: }
1369:
1.108 schwarze 1370: /*
1371: * Retrieve the replacement string; if it is
1372: * undefined, resume searching for escapes.
1373: */
1374:
1.206 schwarze 1375: switch (stesc[1]) {
1.207 schwarze 1376: case '*':
1.315 schwarze 1377: if (arg_complete) {
1378: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1379: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1380:
1381: /*
1382: * If not overriden, let \*(.T
1383: * through to the formatters.
1384: */
1385:
1386: if (res == NULL && naml == 2 &&
1387: stnam[0] == '.' && stnam[1] == 'T') {
1388: roff_setstrn(&r->strtab,
1389: ".T", 2, NULL, 0, 0);
1390: stesc--;
1391: continue;
1392: }
1.315 schwarze 1393: }
1.206 schwarze 1394: break;
1.207 schwarze 1395: case 'B':
1.206 schwarze 1396: npos = 0;
1.218 schwarze 1397: ubuf[0] = arg_complete &&
1.261 schwarze 1398: roff_evalnum(r, ln, stnam, &npos,
1399: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1400: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1401: ubuf[1] = '\0';
1402: break;
1.207 schwarze 1403: case 'n':
1.218 schwarze 1404: if (arg_complete)
1405: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1406: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1407: else
1408: ubuf[0] = '\0';
1.206 schwarze 1409: break;
1.207 schwarze 1410: case 'w':
1.218 schwarze 1411: /* use even incomplete args */
1.208 schwarze 1412: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1413: 24 * (int)naml);
1414: break;
1415: }
1.94 kristaps 1416:
1.238 schwarze 1417: if (res == NULL) {
1.219 schwarze 1418: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1419: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1420: "%.*s", (int)naml, stnam);
1.142 kristaps 1421: res = "";
1.246 schwarze 1422: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1423: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1424: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1425: return ROFF_IGN;
1.94 kristaps 1426: }
1427:
1.108 schwarze 1428: /* Replace the escape sequence by the string. */
1429:
1.209 schwarze 1430: *stesc = '\0';
1.238 schwarze 1431: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1432: buf->buf, res, cp) + 1;
1.94 kristaps 1433:
1.205 schwarze 1434: /* Prepare for the next replacement. */
1.94 kristaps 1435:
1.205 schwarze 1436: start = nbuf + pos;
1.238 schwarze 1437: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1438: free(buf->buf);
1439: buf->buf = nbuf;
1.154 kristaps 1440: }
1.277 schwarze 1441: return ROFF_CONT;
1.154 kristaps 1442: }
1443:
1444: /*
1.275 schwarze 1445: * Process text streams.
1.154 kristaps 1446: */
1447: static enum rofferr
1.305 schwarze 1448: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1449: {
1450: size_t sz;
1451: const char *start;
1.178 schwarze 1452: char *p;
1453: int isz;
1.154 kristaps 1454: enum mandoc_esc esc;
1455:
1.275 schwarze 1456: /* Spring the input line trap. */
1457:
1458: if (roffit_lines == 1) {
1459: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1460: free(buf->buf);
1461: buf->buf = p;
1462: buf->sz = isz + 1;
1463: *offs = 0;
1464: free(roffit_macro);
1465: roffit_lines = 0;
1.277 schwarze 1466: return ROFF_REPARSE;
1.275 schwarze 1467: } else if (roffit_lines > 1)
1468: --roffit_lines;
1469:
1.305 schwarze 1470: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1471: if (roffce_lines < 1) {
1472: r->man->last = roffce_node;
1473: r->man->next = ROFF_NEXT_SIBLING;
1474: roffce_lines = 0;
1475: roffce_node = NULL;
1476: } else
1477: roffce_lines--;
1478: }
1479:
1.275 schwarze 1480: /* Convert all breakable hyphens into ASCII_HYPH. */
1481:
1.238 schwarze 1482: start = p = buf->buf + pos;
1.154 kristaps 1483:
1.238 schwarze 1484: while (*p != '\0') {
1.154 kristaps 1485: sz = strcspn(p, "-\\");
1486: p += sz;
1487:
1.238 schwarze 1488: if (*p == '\0')
1.159 kristaps 1489: break;
1490:
1.238 schwarze 1491: if (*p == '\\') {
1.154 kristaps 1492: /* Skip over escapes. */
1493: p++;
1.189 schwarze 1494: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1495: if (esc == ESCAPE_ERROR)
1.154 kristaps 1496: break;
1.264 schwarze 1497: while (*p == '-')
1498: p++;
1.155 kristaps 1499: continue;
1.159 kristaps 1500: } else if (p == start) {
1.158 kristaps 1501: p++;
1.155 kristaps 1502: continue;
1.158 kristaps 1503: }
1.155 kristaps 1504:
1.171 schwarze 1505: if (isalpha((unsigned char)p[-1]) &&
1506: isalpha((unsigned char)p[1]))
1.155 kristaps 1507: *p = ASCII_HYPH;
1508: p++;
1.94 kristaps 1509: }
1.277 schwarze 1510: return ROFF_CONT;
1.94 kristaps 1511: }
1512:
1.67 kristaps 1513: enum rofferr
1.238 schwarze 1514: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1515: {
1.294 schwarze 1516: enum roff_tok t;
1.109 kristaps 1517: enum rofferr e;
1.238 schwarze 1518: int pos; /* parse point */
1.243 schwarze 1519: int spos; /* saved parse point for messages */
1.238 schwarze 1520: int ppos; /* original offset in buf->buf */
1521: int ctl; /* macro line (boolean) */
1522:
1523: ppos = pos = *offs;
1.79 kristaps 1524:
1.230 schwarze 1525: /* Handle in-line equation delimiters. */
1526:
1.236 schwarze 1527: if (r->tbl == NULL &&
1528: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1529: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1530: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1531: if (e == ROFF_REPARSE)
1.277 schwarze 1532: return e;
1.230 schwarze 1533: assert(e == ROFF_CONT);
1534: }
1535:
1536: /* Expand some escape sequences. */
1.94 kristaps 1537:
1.238 schwarze 1538: e = roff_res(r, buf, ln, pos);
1.303 schwarze 1539: if (e == ROFF_IGN || e == ROFF_APPEND)
1.277 schwarze 1540: return e;
1.238 schwarze 1541: assert(e == ROFF_CONT);
1.94 kristaps 1542:
1.238 schwarze 1543: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1544:
1.94 kristaps 1545: /*
1.79 kristaps 1546: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1547: * text through the macro's filter.
1548: * Equations process all content themselves.
1549: * Tables process almost all content themselves, but we want
1550: * to warn about macros before passing it there.
1.79 kristaps 1551: */
1.74 kristaps 1552:
1.252 schwarze 1553: if (r->last != NULL && ! ctl) {
1.78 kristaps 1554: t = r->last->tok;
1.238 schwarze 1555: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1556: if (e == ROFF_IGN)
1.277 schwarze 1557: return e;
1.294 schwarze 1558: assert(e == ROFF_CONT);
1.182 schwarze 1559: }
1.319 schwarze 1560: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1561: eqn_read(r->eqn, buf->buf + ppos);
1562: return ROFF_IGN;
1563: }
1.321 schwarze 1564: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1565: tbl_read(r->tbl, ln, buf->buf, ppos);
1566: roff_addtbl(r->man, r->tbl);
1567: return ROFF_IGN;
1568: }
1.252 schwarze 1569: if ( ! ctl)
1.305 schwarze 1570: return roff_parsetext(r, buf, pos, offs);
1.228 schwarze 1571:
1572: /* Skip empty request lines. */
1573:
1.238 schwarze 1574: if (buf->buf[pos] == '"') {
1.228 schwarze 1575: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1576: ln, pos, NULL);
1.277 schwarze 1577: return ROFF_IGN;
1.238 schwarze 1578: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1579: return ROFF_IGN;
1.67 kristaps 1580:
1.79 kristaps 1581: /*
1582: * If a scope is open, go to the child handler for that macro,
1583: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1584: * Don't do so if an equation is open.
1.79 kristaps 1585: */
1.78 kristaps 1586:
1.79 kristaps 1587: if (r->last) {
1588: t = r->last->tok;
1.277 schwarze 1589: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1590: }
1.78 kristaps 1591:
1.243 schwarze 1592: /* No scope is open. This is a new request or macro. */
1593:
1594: spos = pos;
1595: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1596:
1597: /* Tables ignore most macros. */
1598:
1.308 schwarze 1599: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1600: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.243 schwarze 1601: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1602: ln, pos, buf->buf + spos);
1.308 schwarze 1603: if (t != TOKEN_NONE)
1.277 schwarze 1604: return ROFF_IGN;
1.257 schwarze 1605: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1606: pos++;
1.291 schwarze 1607: while (buf->buf[pos] == ' ')
1.257 schwarze 1608: pos++;
1.321 schwarze 1609: tbl_read(r->tbl, ln, buf->buf, pos);
1610: roff_addtbl(r->man, r->tbl);
1611: return ROFF_IGN;
1.243 schwarze 1612: }
1613:
1.305 schwarze 1614: /* For now, let high level macros abort .ce mode. */
1615:
1616: if (ctl && roffce_node != NULL &&
1.324 schwarze 1617: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1618: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1619: r->man->last = roffce_node;
1620: r->man->next = ROFF_NEXT_SIBLING;
1621: roffce_lines = 0;
1622: roffce_node = NULL;
1623: }
1624:
1.79 kristaps 1625: /*
1.243 schwarze 1626: * This is neither a roff request nor a user-defined macro.
1627: * Let the standard macro set parsers handle it.
1.79 kristaps 1628: */
1.67 kristaps 1629:
1.294 schwarze 1630: if (t == TOKEN_NONE)
1.277 schwarze 1631: return ROFF_CONT;
1.243 schwarze 1632:
1633: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1634:
1.296 schwarze 1635: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1636: }
1637:
1.117 kristaps 1638: void
1.74 kristaps 1639: roff_endparse(struct roff *r)
1640: {
1.321 schwarze 1641: if (r->last != NULL)
1.221 schwarze 1642: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1643: r->last->line, r->last->col,
1.295 schwarze 1644: roff_name[r->last->tok]);
1.117 kristaps 1645:
1.321 schwarze 1646: if (r->eqn != NULL) {
1.221 schwarze 1647: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.319 schwarze 1648: r->eqn->node->line, r->eqn->node->pos, "EQ");
1649: eqn_parse(r->eqn);
1650: r->eqn = NULL;
1.125 kristaps 1651: }
1652:
1.321 schwarze 1653: if (r->tbl != NULL) {
1.221 schwarze 1654: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1655: r->tbl->line, r->tbl->pos, "TS");
1.321 schwarze 1656: tbl_end(r->tbl);
1657: r->tbl = NULL;
1.117 kristaps 1658: }
1.67 kristaps 1659: }
1660:
1661: /*
1662: * Parse a roff node's type from the input buffer. This must be in the
1663: * form of ".foo xxx" in the usual way.
1664: */
1.294 schwarze 1665: static enum roff_tok
1.214 schwarze 1666: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1667: {
1.214 schwarze 1668: char *cp;
1.106 kristaps 1669: const char *mac;
1670: size_t maclen;
1.315 schwarze 1671: int deftype;
1.294 schwarze 1672: enum roff_tok t;
1.67 kristaps 1673:
1.214 schwarze 1674: cp = buf + *pos;
1675:
1676: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1677: return TOKEN_NONE;
1.67 kristaps 1678:
1.214 schwarze 1679: mac = cp;
1680: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1681:
1.315 schwarze 1682: deftype = ROFFDEF_USER | ROFFDEF_REN;
1683: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1684: switch (deftype) {
1685: case ROFFDEF_USER:
1686: t = ROFF_USERDEF;
1687: break;
1688: case ROFFDEF_REN:
1689: t = ROFF_RENAMED;
1690: break;
1691: default:
1692: t = roffhash_find(r->reqtab, mac, maclen);
1693: break;
1694: }
1.294 schwarze 1695: if (t != TOKEN_NONE)
1.214 schwarze 1696: *pos = cp - buf;
1.325 schwarze 1697: else if (deftype == ROFFDEF_UNDEF) {
1698: /* Using an undefined macro defines it to be empty. */
1699: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1700: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1701: }
1.277 schwarze 1702: return t;
1.67 kristaps 1703: }
1704:
1.266 schwarze 1705: /* --- handling of request blocks ----------------------------------------- */
1706:
1.67 kristaps 1707: static enum rofferr
1.76 kristaps 1708: roff_cblock(ROFF_ARGS)
1.67 kristaps 1709: {
1710:
1.79 kristaps 1711: /*
1712: * A block-close `..' should only be invoked as a child of an
1713: * ignore macro, otherwise raise a warning and just ignore it.
1714: */
1715:
1.238 schwarze 1716: if (r->last == NULL) {
1.221 schwarze 1717: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1718: ln, ppos, "..");
1.277 schwarze 1719: return ROFF_IGN;
1.76 kristaps 1720: }
1.67 kristaps 1721:
1.81 kristaps 1722: switch (r->last->tok) {
1.207 schwarze 1723: case ROFF_am:
1.220 schwarze 1724: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1725: case ROFF_ami:
1726: case ROFF_de:
1.108 schwarze 1727: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1728: case ROFF_dei:
1729: case ROFF_ig:
1.81 kristaps 1730: break;
1731: default:
1.221 schwarze 1732: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1733: ln, ppos, "..");
1.277 schwarze 1734: return ROFF_IGN;
1.76 kristaps 1735: }
1.67 kristaps 1736:
1.238 schwarze 1737: if (buf->buf[pos] != '\0')
1.217 schwarze 1738: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1739: ".. %s", buf->buf + pos);
1.71 kristaps 1740:
1741: roffnode_pop(r);
1.76 kristaps 1742: roffnode_cleanscope(r);
1.277 schwarze 1743: return ROFF_IGN;
1.71 kristaps 1744:
1.67 kristaps 1745: }
1746:
1.76 kristaps 1747: static void
1748: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1749: {
1750:
1.76 kristaps 1751: while (r->last) {
1.173 schwarze 1752: if (--r->last->endspan != 0)
1.76 kristaps 1753: break;
1754: roffnode_pop(r);
1755: }
1.67 kristaps 1756: }
1757:
1.195 schwarze 1758: static void
1759: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1760: {
1761:
1.76 kristaps 1762: if (NULL == r->last) {
1.221 schwarze 1763: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1764: ln, ppos, "\\}");
1.195 schwarze 1765: return;
1.76 kristaps 1766: }
1767:
1.82 kristaps 1768: switch (r->last->tok) {
1.207 schwarze 1769: case ROFF_el:
1770: case ROFF_ie:
1771: case ROFF_if:
1.82 kristaps 1772: break;
1773: default:
1.221 schwarze 1774: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1775: ln, ppos, "\\}");
1.195 schwarze 1776: return;
1.75 kristaps 1777: }
1778:
1.76 kristaps 1779: if (r->last->endspan > -1) {
1.221 schwarze 1780: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1781: ln, ppos, "\\}");
1.195 schwarze 1782: return;
1.76 kristaps 1783: }
1784:
1.75 kristaps 1785: roffnode_pop(r);
1.76 kristaps 1786: roffnode_cleanscope(r);
1.195 schwarze 1787: return;
1.76 kristaps 1788: }
1789:
1790: static enum rofferr
1.80 kristaps 1791: roff_block(ROFF_ARGS)
1.76 kristaps 1792: {
1.315 schwarze 1793: const char *name, *value;
1794: char *call, *cp, *iname, *rname;
1795: size_t csz, namesz, rsz;
1796: int deftype;
1.106 kristaps 1797:
1.220 schwarze 1798: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1799:
1.238 schwarze 1800: if (tok == ROFF_de1)
1.220 schwarze 1801: tok = ROFF_de;
1.251 schwarze 1802: else if (tok == ROFF_dei1)
1803: tok = ROFF_dei;
1.238 schwarze 1804: else if (tok == ROFF_am1)
1.220 schwarze 1805: tok = ROFF_am;
1.251 schwarze 1806: else if (tok == ROFF_ami1)
1807: tok = ROFF_ami;
1.220 schwarze 1808:
1809: /* Parse the macro name argument. */
1810:
1.238 schwarze 1811: cp = buf->buf + pos;
1812: if (tok == ROFF_ig) {
1.220 schwarze 1813: iname = NULL;
1814: namesz = 0;
1815: } else {
1816: iname = cp;
1817: namesz = roff_getname(r, &cp, ln, ppos);
1818: iname[namesz] = '\0';
1819: }
1.107 kristaps 1820:
1.220 schwarze 1821: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1822:
1.238 schwarze 1823: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1824: deftype = ROFFDEF_USER;
1825: name = roff_getstrn(r, iname, namesz, &deftype);
1826: if (name == NULL) {
1.220 schwarze 1827: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1828: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1829: "%.*s", (int)namesz, iname);
1830: namesz = 0;
1831: } else
1832: namesz = strlen(name);
1833: } else
1834: name = iname;
1.107 kristaps 1835:
1.238 schwarze 1836: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1837: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1838: ln, ppos, roff_name[tok]);
1.277 schwarze 1839: return ROFF_IGN;
1.220 schwarze 1840: }
1.80 kristaps 1841:
1.106 kristaps 1842: roffnode_push(r, tok, name, ln, ppos);
1843:
1844: /*
1845: * At the beginning of a `de' macro, clear the existing string
1846: * with the same name, if there is one. New content will be
1.193 schwarze 1847: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1848: */
1.107 kristaps 1849:
1.311 schwarze 1850: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 1851: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 1852: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 1853: } else if (tok == ROFF_am || tok == ROFF_ami) {
1854: deftype = ROFFDEF_ANY;
1855: value = roff_getstrn(r, iname, namesz, &deftype);
1856: switch (deftype) { /* Before appending, ... */
1857: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1858: roff_setstrn(&r->strtab, name, namesz,
1859: value, strlen(value), 0);
1860: break;
1861: case ROFFDEF_REN: /* call original standard macro. */
1862: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1863: (int)strlen(value), value);
1864: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1865: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1866: free(call);
1867: break;
1868: case ROFFDEF_STD: /* rename and call standard macro. */
1869: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1870: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1871: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1872: (int)rsz, rname);
1873: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1874: free(call);
1875: free(rname);
1876: break;
1877: default:
1878: break;
1879: }
1.311 schwarze 1880: }
1.76 kristaps 1881:
1.238 schwarze 1882: if (*cp == '\0')
1.277 schwarze 1883: return ROFF_IGN;
1.78 kristaps 1884:
1.220 schwarze 1885: /* Get the custom end marker. */
1.107 kristaps 1886:
1.220 schwarze 1887: iname = cp;
1.213 schwarze 1888: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1889:
1890: /* Resolve the end marker if it is indirect. */
1891:
1.238 schwarze 1892: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1893: deftype = ROFFDEF_USER;
1894: name = roff_getstrn(r, iname, namesz, &deftype);
1895: if (name == NULL) {
1.220 schwarze 1896: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1897: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1898: "%.*s", (int)namesz, iname);
1899: namesz = 0;
1900: } else
1901: namesz = strlen(name);
1902: } else
1903: name = iname;
1904:
1.213 schwarze 1905: if (namesz)
1906: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1907:
1.238 schwarze 1908: if (*cp != '\0')
1.217 schwarze 1909: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 1910: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 1911:
1.277 schwarze 1912: return ROFF_IGN;
1.78 kristaps 1913: }
1914:
1915: static enum rofferr
1.80 kristaps 1916: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1917: {
1.294 schwarze 1918: enum roff_tok t;
1.79 kristaps 1919: int i, j;
1920:
1921: /*
1922: * First check whether a custom macro exists at this level. If
1923: * it does, then check against it. This is some of groff's
1924: * stranger behaviours. If we encountered a custom end-scope
1925: * tag and that tag also happens to be a "real" macro, then we
1926: * need to try interpreting it again as a real macro. If it's
1927: * not, then return ignore. Else continue.
1928: */
1929:
1930: if (r->last->end) {
1.130 kristaps 1931: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1932: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1933: break;
1934:
1.238 schwarze 1935: if (r->last->end[j] == '\0' &&
1936: (buf->buf[i] == '\0' ||
1937: buf->buf[i] == ' ' ||
1938: buf->buf[i] == '\t')) {
1.79 kristaps 1939: roffnode_pop(r);
1940: roffnode_cleanscope(r);
1941:
1.238 schwarze 1942: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1943: i++;
1944:
1945: pos = i;
1.238 schwarze 1946: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 1947: TOKEN_NONE)
1.277 schwarze 1948: return ROFF_RERUN;
1949: return ROFF_IGN;
1.79 kristaps 1950: }
1951: }
1952:
1953: /*
1954: * If we have no custom end-query or lookup failed, then try
1955: * pulling it out of the hashtable.
1956: */
1957:
1.238 schwarze 1958: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1959:
1.238 schwarze 1960: if (t != ROFF_cblock) {
1961: if (tok != ROFF_ig)
1962: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1963: return ROFF_IGN;
1.106 kristaps 1964: }
1.79 kristaps 1965:
1.277 schwarze 1966: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1967: }
1968:
1969: static enum rofferr
1.80 kristaps 1970: roff_block_text(ROFF_ARGS)
1.78 kristaps 1971: {
1972:
1.238 schwarze 1973: if (tok != ROFF_ig)
1974: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1975:
1.277 schwarze 1976: return ROFF_IGN;
1.78 kristaps 1977: }
1978:
1979: static enum rofferr
1.82 kristaps 1980: roff_cond_sub(ROFF_ARGS)
1981: {
1.294 schwarze 1982: enum roff_tok t;
1.139 kristaps 1983: char *ep;
1.198 schwarze 1984: int rr;
1.82 kristaps 1985:
1986: rr = r->last->rule;
1.139 kristaps 1987: roffnode_cleanscope(r);
1.144 kristaps 1988:
1.196 schwarze 1989: /*
1990: * If `\}' occurs on a macro line without a preceding macro,
1991: * drop the line completely.
1992: */
1993:
1.238 schwarze 1994: ep = buf->buf + pos;
1995: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1996: rr = 0;
1.196 schwarze 1997:
1.177 schwarze 1998: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1999:
1.238 schwarze 2000: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2001: switch (ep[1]) {
2002: case '}':
2003: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2004: roff_ccond(r, ln, ep - buf->buf);
2005: break;
2006: case '\0':
2007: ++ep;
2008: break;
2009: default:
2010: ep += 2;
2011: break;
1.197 schwarze 2012: }
1.177 schwarze 2013: }
1.318 schwarze 2014:
2015: /*
2016: * Fully handle known macros when they are structurally
2017: * required or when the conditional evaluated to true.
2018: */
2019:
2020: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2021: return t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT)
2022: ? (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) : rr
2023: ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 2024: }
2025:
2026: static enum rofferr
2027: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2028: {
1.140 kristaps 2029: char *ep;
1.198 schwarze 2030: int rr;
1.82 kristaps 2031:
2032: rr = r->last->rule;
1.140 kristaps 2033: roffnode_cleanscope(r);
1.82 kristaps 2034:
1.238 schwarze 2035: ep = buf->buf + pos;
2036: while ((ep = strchr(ep, '\\')) != NULL) {
2037: if (*(++ep) == '}') {
1.197 schwarze 2038: *ep = '&';
1.238 schwarze 2039: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 2040: }
1.247 schwarze 2041: if (*ep != '\0')
2042: ++ep;
1.78 kristaps 2043: }
1.277 schwarze 2044: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 2045: }
2046:
1.266 schwarze 2047: /* --- handling of numeric and conditional expressions -------------------- */
2048:
1.204 schwarze 2049: /*
2050: * Parse a single signed integer number. Stop at the first non-digit.
2051: * If there is at least one digit, return success and advance the
2052: * parse point, else return failure and let the parse point unchanged.
2053: * Ignore overflows, treat them just like the C language.
2054: */
1.184 schwarze 2055: static int
1.261 schwarze 2056: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2057: {
1.261 schwarze 2058: int myres, scaled, n, p;
1.206 schwarze 2059:
2060: if (NULL == res)
2061: res = &myres;
1.184 schwarze 2062:
2063: p = *pos;
2064: n = v[p] == '-';
1.261 schwarze 2065: if (n || v[p] == '+')
1.184 schwarze 2066: p++;
2067:
1.261 schwarze 2068: if (flags & ROFFNUM_WHITE)
2069: while (isspace((unsigned char)v[p]))
2070: p++;
2071:
1.184 schwarze 2072: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2073: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2074: if (p == *pos + n)
2075: return 0;
2076:
2077: if (n)
2078: *res = -*res;
2079:
1.254 schwarze 2080: /* Each number may be followed by one optional scaling unit. */
2081:
2082: switch (v[p]) {
2083: case 'f':
1.261 schwarze 2084: scaled = *res * 65536;
1.254 schwarze 2085: break;
2086: case 'i':
1.261 schwarze 2087: scaled = *res * 240;
1.254 schwarze 2088: break;
2089: case 'c':
1.261 schwarze 2090: scaled = *res * 240 / 2.54;
1.254 schwarze 2091: break;
2092: case 'v':
2093: case 'P':
1.261 schwarze 2094: scaled = *res * 40;
1.254 schwarze 2095: break;
2096: case 'm':
2097: case 'n':
1.261 schwarze 2098: scaled = *res * 24;
1.254 schwarze 2099: break;
2100: case 'p':
1.261 schwarze 2101: scaled = *res * 10 / 3;
1.254 schwarze 2102: break;
2103: case 'u':
1.261 schwarze 2104: scaled = *res;
1.254 schwarze 2105: break;
2106: case 'M':
1.261 schwarze 2107: scaled = *res * 6 / 25;
1.254 schwarze 2108: break;
2109: default:
1.261 schwarze 2110: scaled = *res;
1.254 schwarze 2111: p--;
2112: break;
2113: }
1.261 schwarze 2114: if (flags & ROFFNUM_SCALE)
2115: *res = scaled;
1.254 schwarze 2116:
2117: *pos = p + 1;
1.277 schwarze 2118: return 1;
1.184 schwarze 2119: }
2120:
1.198 schwarze 2121: /*
2122: * Evaluate a string comparison condition.
2123: * The first character is the delimiter.
2124: * Succeed if the string up to its second occurrence
2125: * matches the string up to its third occurence.
2126: * Advance the cursor after the third occurrence
2127: * or lacking that, to the end of the line.
2128: */
2129: static int
2130: roff_evalstrcond(const char *v, int *pos)
2131: {
2132: const char *s1, *s2, *s3;
2133: int match;
2134:
2135: match = 0;
2136: s1 = v + *pos; /* initial delimiter */
2137: s2 = s1 + 1; /* for scanning the first string */
2138: s3 = strchr(s2, *s1); /* for scanning the second string */
2139:
2140: if (NULL == s3) /* found no middle delimiter */
2141: goto out;
2142:
2143: while ('\0' != *++s3) {
2144: if (*s2 != *s3) { /* mismatch */
2145: s3 = strchr(s3, *s1);
2146: break;
2147: }
2148: if (*s3 == *s1) { /* found the final delimiter */
2149: match = 1;
2150: break;
2151: }
2152: s2++;
2153: }
2154:
2155: out:
2156: if (NULL == s3)
2157: s3 = strchr(s2, '\0');
1.242 schwarze 2158: else if (*s3 != '\0')
1.198 schwarze 2159: s3++;
2160: *pos = s3 - v;
1.277 schwarze 2161: return match;
1.198 schwarze 2162: }
2163:
1.204 schwarze 2164: /*
2165: * Evaluate an optionally negated single character, numerical,
2166: * or string condition.
2167: */
1.198 schwarze 2168: static int
1.271 schwarze 2169: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2170: {
1.271 schwarze 2171: char *cp, *name;
2172: size_t sz;
1.315 schwarze 2173: int deftype, number, savepos, istrue, wanttrue;
1.88 kristaps 2174:
1.198 schwarze 2175: if ('!' == v[*pos]) {
2176: wanttrue = 0;
2177: (*pos)++;
2178: } else
2179: wanttrue = 1;
2180:
1.88 kristaps 2181: switch (v[*pos]) {
1.240 schwarze 2182: case '\0':
1.277 schwarze 2183: return 0;
1.207 schwarze 2184: case 'n':
2185: case 'o':
1.88 kristaps 2186: (*pos)++;
1.277 schwarze 2187: return wanttrue;
1.207 schwarze 2188: case 'c':
2189: case 'e':
2190: case 't':
1.239 schwarze 2191: case 'v':
1.88 kristaps 2192: (*pos)++;
1.277 schwarze 2193: return !wanttrue;
1.310 schwarze 2194: case 'd':
1.271 schwarze 2195: case 'r':
1.310 schwarze 2196: cp = v + *pos + 1;
2197: while (*cp == ' ')
2198: cp++;
2199: name = cp;
2200: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2201: if (sz == 0)
2202: istrue = 0;
2203: else if (v[*pos] == 'r')
2204: istrue = roff_hasregn(r, name, sz);
2205: else {
2206: deftype = ROFFDEF_ANY;
2207: roff_getstrn(r, name, sz, &deftype);
2208: istrue = !!deftype;
2209: }
1.271 schwarze 2210: *pos = cp - v;
1.310 schwarze 2211: return istrue == wanttrue;
1.88 kristaps 2212: default:
2213: break;
2214: }
2215:
1.241 schwarze 2216: savepos = *pos;
1.261 schwarze 2217: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2218: return (number > 0) == wanttrue;
1.241 schwarze 2219: else if (*pos == savepos)
1.277 schwarze 2220: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2221: else
1.277 schwarze 2222: return 0;
1.88 kristaps 2223: }
2224:
1.74 kristaps 2225: static enum rofferr
1.103 kristaps 2226: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2227: {
1.123 schwarze 2228:
1.277 schwarze 2229: return ROFF_IGN;
1.89 kristaps 2230: }
2231:
1.104 kristaps 2232: static enum rofferr
1.251 schwarze 2233: roff_insec(ROFF_ARGS)
2234: {
2235:
2236: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2237: ln, ppos, roff_name[tok]);
1.277 schwarze 2238: return ROFF_IGN;
1.251 schwarze 2239: }
2240:
2241: static enum rofferr
2242: roff_unsupp(ROFF_ARGS)
2243: {
2244:
2245: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2246: ln, ppos, roff_name[tok]);
1.277 schwarze 2247: return ROFF_IGN;
1.251 schwarze 2248: }
2249:
2250: static enum rofferr
1.82 kristaps 2251: roff_cond(ROFF_ARGS)
1.74 kristaps 2252: {
1.173 schwarze 2253:
2254: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2255:
1.207 schwarze 2256: /*
1.134 kristaps 2257: * An `.el' has no conditional body: it will consume the value
2258: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2259: * defaults to DENY.
1.134 kristaps 2260: *
2261: * If we're not an `el', however, then evaluate the conditional.
2262: */
1.133 kristaps 2263:
1.238 schwarze 2264: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2265: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2266: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2267:
1.134 kristaps 2268: /*
2269: * An if-else will put the NEGATION of the current evaluated
2270: * conditional into the stack of rules.
2271: */
2272:
1.238 schwarze 2273: if (tok == ROFF_ie) {
1.223 schwarze 2274: if (r->rstackpos + 1 == r->rstacksz) {
2275: r->rstacksz += 16;
2276: r->rstack = mandoc_reallocarray(r->rstack,
2277: r->rstacksz, sizeof(int));
1.134 kristaps 2278: }
1.198 schwarze 2279: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2280: }
1.88 kristaps 2281:
2282: /* If the parent has false as its rule, then so do we. */
2283:
1.198 schwarze 2284: if (r->last->parent && !r->last->parent->rule)
2285: r->last->rule = 0;
1.88 kristaps 2286:
2287: /*
1.173 schwarze 2288: * Determine scope.
2289: * If there is nothing on the line after the conditional,
2290: * not even whitespace, use next-line scope.
1.88 kristaps 2291: */
1.74 kristaps 2292:
1.238 schwarze 2293: if (buf->buf[pos] == '\0') {
1.173 schwarze 2294: r->last->endspan = 2;
2295: goto out;
2296: }
2297:
1.238 schwarze 2298: while (buf->buf[pos] == ' ')
1.173 schwarze 2299: pos++;
2300:
2301: /* An opening brace requests multiline scope. */
1.75 kristaps 2302:
1.238 schwarze 2303: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2304: r->last->endspan = -1;
2305: pos += 2;
1.272 schwarze 2306: while (buf->buf[pos] == ' ')
2307: pos++;
1.173 schwarze 2308: goto out;
1.207 schwarze 2309: }
1.74 kristaps 2310:
1.77 kristaps 2311: /*
1.173 schwarze 2312: * Anything else following the conditional causes
2313: * single-line scope. Warn if the scope contains
2314: * nothing but trailing whitespace.
1.77 kristaps 2315: */
2316:
1.238 schwarze 2317: if (buf->buf[pos] == '\0')
1.216 schwarze 2318: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2319: ln, ppos, roff_name[tok]);
1.77 kristaps 2320:
1.173 schwarze 2321: r->last->endspan = 1;
1.74 kristaps 2322:
1.173 schwarze 2323: out:
1.75 kristaps 2324: *offs = pos;
1.277 schwarze 2325: return ROFF_RERUN;
1.83 schwarze 2326: }
2327:
2328: static enum rofferr
1.92 schwarze 2329: roff_ds(ROFF_ARGS)
2330: {
1.212 schwarze 2331: char *string;
2332: const char *name;
2333: size_t namesz;
1.96 kristaps 2334:
1.251 schwarze 2335: /* Ignore groff compatibility mode for now. */
2336:
2337: if (tok == ROFF_ds1)
2338: tok = ROFF_ds;
2339: else if (tok == ROFF_as1)
2340: tok = ROFF_as;
2341:
1.96 kristaps 2342: /*
1.212 schwarze 2343: * The first word is the name of the string.
2344: * If it is empty or terminated by an escape sequence,
2345: * abort the `ds' request without defining anything.
1.96 kristaps 2346: */
1.92 schwarze 2347:
1.238 schwarze 2348: name = string = buf->buf + pos;
2349: if (*name == '\0')
1.277 schwarze 2350: return ROFF_IGN;
1.92 schwarze 2351:
1.212 schwarze 2352: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2353: if (name[namesz] == '\\')
1.277 schwarze 2354: return ROFF_IGN;
1.212 schwarze 2355:
2356: /* Read past the initial double-quote, if any. */
1.238 schwarze 2357: if (*string == '"')
1.92 schwarze 2358: string++;
2359:
1.96 kristaps 2360: /* The rest is the value. */
1.212 schwarze 2361: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2362: ROFF_as == tok);
1.311 schwarze 2363: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2364: return ROFF_IGN;
1.92 schwarze 2365: }
2366:
1.204 schwarze 2367: /*
2368: * Parse a single operator, one or two characters long.
2369: * If the operator is recognized, return success and advance the
2370: * parse point, else return failure and let the parse point unchanged.
2371: */
2372: static int
2373: roff_getop(const char *v, int *pos, char *res)
2374: {
2375:
2376: *res = v[*pos];
2377:
2378: switch (*res) {
1.207 schwarze 2379: case '+':
2380: case '-':
2381: case '*':
2382: case '/':
2383: case '%':
2384: case '&':
2385: case ':':
1.204 schwarze 2386: break;
2387: case '<':
2388: switch (v[*pos + 1]) {
1.207 schwarze 2389: case '=':
1.204 schwarze 2390: *res = 'l';
2391: (*pos)++;
2392: break;
1.207 schwarze 2393: case '>':
1.204 schwarze 2394: *res = '!';
2395: (*pos)++;
2396: break;
1.207 schwarze 2397: case '?':
1.204 schwarze 2398: *res = 'i';
2399: (*pos)++;
2400: break;
2401: default:
2402: break;
2403: }
2404: break;
2405: case '>':
2406: switch (v[*pos + 1]) {
1.207 schwarze 2407: case '=':
1.204 schwarze 2408: *res = 'g';
2409: (*pos)++;
2410: break;
1.207 schwarze 2411: case '?':
1.204 schwarze 2412: *res = 'a';
2413: (*pos)++;
2414: break;
2415: default:
2416: break;
2417: }
2418: break;
2419: case '=':
2420: if ('=' == v[*pos + 1])
2421: (*pos)++;
2422: break;
2423: default:
1.277 schwarze 2424: return 0;
1.204 schwarze 2425: }
2426: (*pos)++;
2427:
1.277 schwarze 2428: return *res;
1.204 schwarze 2429: }
2430:
2431: /*
2432: * Evaluate either a parenthesized numeric expression
2433: * or a single signed integer number.
2434: */
2435: static int
1.235 schwarze 2436: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2437: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2438: {
2439:
2440: if ('(' != v[*pos])
1.277 schwarze 2441: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2442:
2443: (*pos)++;
1.261 schwarze 2444: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2445: return 0;
1.204 schwarze 2446:
1.206 schwarze 2447: /*
2448: * Omission of the closing parenthesis
2449: * is an error in validation mode,
2450: * but ignored in evaluation mode.
2451: */
2452:
1.204 schwarze 2453: if (')' == v[*pos])
2454: (*pos)++;
1.206 schwarze 2455: else if (NULL == res)
1.277 schwarze 2456: return 0;
1.204 schwarze 2457:
1.277 schwarze 2458: return 1;
1.204 schwarze 2459: }
2460:
2461: /*
2462: * Evaluate a complete numeric expression.
2463: * Proceed left to right, there is no concept of precedence.
2464: */
2465: static int
1.235 schwarze 2466: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2467: int *pos, int *res, int flags)
1.204 schwarze 2468: {
2469: int mypos, operand2;
2470: char operator;
2471:
2472: if (NULL == pos) {
2473: mypos = 0;
2474: pos = &mypos;
2475: }
2476:
1.261 schwarze 2477: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2478: while (isspace((unsigned char)v[*pos]))
2479: (*pos)++;
2480:
1.261 schwarze 2481: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2482: return 0;
1.204 schwarze 2483:
2484: while (1) {
1.261 schwarze 2485: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2486: while (isspace((unsigned char)v[*pos]))
2487: (*pos)++;
2488:
2489: if ( ! roff_getop(v, pos, &operator))
2490: break;
2491:
1.261 schwarze 2492: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2493: while (isspace((unsigned char)v[*pos]))
2494: (*pos)++;
2495:
1.261 schwarze 2496: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2497: return 0;
1.204 schwarze 2498:
1.261 schwarze 2499: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2500: while (isspace((unsigned char)v[*pos]))
2501: (*pos)++;
1.206 schwarze 2502:
2503: if (NULL == res)
2504: continue;
1.204 schwarze 2505:
2506: switch (operator) {
1.207 schwarze 2507: case '+':
1.204 schwarze 2508: *res += operand2;
2509: break;
1.207 schwarze 2510: case '-':
1.204 schwarze 2511: *res -= operand2;
2512: break;
1.207 schwarze 2513: case '*':
1.204 schwarze 2514: *res *= operand2;
2515: break;
1.207 schwarze 2516: case '/':
1.244 schwarze 2517: if (operand2 == 0) {
1.235 schwarze 2518: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2519: r->parse, ln, *pos, v);
2520: *res = 0;
2521: break;
2522: }
1.204 schwarze 2523: *res /= operand2;
2524: break;
1.207 schwarze 2525: case '%':
1.244 schwarze 2526: if (operand2 == 0) {
2527: mandoc_msg(MANDOCERR_DIVZERO,
2528: r->parse, ln, *pos, v);
2529: *res = 0;
2530: break;
2531: }
1.204 schwarze 2532: *res %= operand2;
2533: break;
1.207 schwarze 2534: case '<':
1.204 schwarze 2535: *res = *res < operand2;
2536: break;
1.207 schwarze 2537: case '>':
1.204 schwarze 2538: *res = *res > operand2;
2539: break;
1.207 schwarze 2540: case 'l':
1.204 schwarze 2541: *res = *res <= operand2;
2542: break;
1.207 schwarze 2543: case 'g':
1.204 schwarze 2544: *res = *res >= operand2;
2545: break;
1.207 schwarze 2546: case '=':
1.204 schwarze 2547: *res = *res == operand2;
2548: break;
1.207 schwarze 2549: case '!':
1.204 schwarze 2550: *res = *res != operand2;
2551: break;
1.207 schwarze 2552: case '&':
1.204 schwarze 2553: *res = *res && operand2;
2554: break;
1.207 schwarze 2555: case ':':
1.204 schwarze 2556: *res = *res || operand2;
2557: break;
1.207 schwarze 2558: case 'i':
1.204 schwarze 2559: if (operand2 < *res)
2560: *res = operand2;
2561: break;
1.207 schwarze 2562: case 'a':
1.204 schwarze 2563: if (operand2 > *res)
2564: *res = operand2;
2565: break;
2566: default:
2567: abort();
2568: }
2569: }
1.277 schwarze 2570: return 1;
1.204 schwarze 2571: }
2572:
1.266 schwarze 2573: /* --- register management ------------------------------------------------ */
2574:
1.180 schwarze 2575: void
1.187 schwarze 2576: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2577: {
1.327 schwarze 2578: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2579: }
2580:
2581: static void
2582: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2583: int val, char sign, int step)
1.326 schwarze 2584: {
1.180 schwarze 2585: struct roffreg *reg;
2586:
2587: /* Search for an existing register with the same name. */
2588: reg = r->regtab;
2589:
1.326 schwarze 2590: while (reg != NULL && (reg->key.sz != len ||
2591: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 2592: reg = reg->next;
1.147 kristaps 2593:
1.180 schwarze 2594: if (NULL == reg) {
2595: /* Create a new register. */
2596: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 2597: reg->key.p = mandoc_strndup(name, len);
2598: reg->key.sz = len;
1.187 schwarze 2599: reg->val = 0;
1.327 schwarze 2600: reg->step = 0;
1.180 schwarze 2601: reg->next = r->regtab;
2602: r->regtab = reg;
2603: }
2604:
1.187 schwarze 2605: if ('+' == sign)
2606: reg->val += val;
2607: else if ('-' == sign)
2608: reg->val -= val;
2609: else
2610: reg->val = val;
1.327 schwarze 2611: if (step != INT_MIN)
2612: reg->step = step;
1.147 kristaps 2613: }
2614:
1.192 schwarze 2615: /*
2616: * Handle some predefined read-only number registers.
2617: * For now, return -1 if the requested register is not predefined;
2618: * in case a predefined read-only register having the value -1
2619: * were to turn up, another special value would have to be chosen.
2620: */
2621: static int
1.273 schwarze 2622: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2623: {
2624:
2625: switch (*name) {
1.273 schwarze 2626: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2627: return r->argc;
1.207 schwarze 2628: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2629: return 0;
1.207 schwarze 2630: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2631: return 1;
1.207 schwarze 2632: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2633: return 24;
1.207 schwarze 2634: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2635: return 0;
1.207 schwarze 2636: case 'T': /* Some output device is always defined. */
1.277 schwarze 2637: return 1;
1.207 schwarze 2638: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2639: return 40;
1.192 schwarze 2640: default:
1.277 schwarze 2641: return -1;
1.192 schwarze 2642: }
2643: }
2644:
1.181 schwarze 2645: int
1.326 schwarze 2646: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 2647: {
1.327 schwarze 2648: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 2649: }
2650:
2651: static int
1.327 schwarze 2652: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 2653: {
2654: struct roffreg *reg;
1.192 schwarze 2655: int val;
2656:
2657: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2658: val = roff_getregro(r, name + 1);
1.192 schwarze 2659: if (-1 != val)
1.277 schwarze 2660: return val;
1.192 schwarze 2661: }
1.181 schwarze 2662:
1.327 schwarze 2663: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 2664: if (len == reg->key.sz &&
1.327 schwarze 2665: 0 == strncmp(name, reg->key.p, len)) {
2666: switch (sign) {
2667: case '+':
2668: reg->val += reg->step;
2669: break;
2670: case '-':
2671: reg->val -= reg->step;
2672: break;
2673: default:
2674: break;
2675: }
1.277 schwarze 2676: return reg->val;
1.327 schwarze 2677: }
2678: }
1.271 schwarze 2679:
1.327 schwarze 2680: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 2681: return 0;
1.271 schwarze 2682: }
2683:
2684: static int
2685: roff_hasregn(const struct roff *r, const char *name, size_t len)
2686: {
2687: struct roffreg *reg;
2688: int val;
2689:
2690: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2691: val = roff_getregro(r, name + 1);
1.271 schwarze 2692: if (-1 != val)
1.277 schwarze 2693: return 1;
1.271 schwarze 2694: }
2695:
2696: for (reg = r->regtab; reg; reg = reg->next)
2697: if (len == reg->key.sz &&
2698: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2699: return 1;
1.147 kristaps 2700:
1.277 schwarze 2701: return 0;
1.147 kristaps 2702: }
2703:
1.180 schwarze 2704: static void
2705: roff_freereg(struct roffreg *reg)
1.147 kristaps 2706: {
1.180 schwarze 2707: struct roffreg *old_reg;
1.147 kristaps 2708:
1.180 schwarze 2709: while (NULL != reg) {
2710: free(reg->key.p);
2711: old_reg = reg;
2712: reg = reg->next;
2713: free(old_reg);
2714: }
1.147 kristaps 2715: }
1.92 schwarze 2716:
2717: static enum rofferr
1.89 kristaps 2718: roff_nr(ROFF_ARGS)
1.83 schwarze 2719: {
1.327 schwarze 2720: char *key, *val, *step;
1.212 schwarze 2721: size_t keysz;
1.327 schwarze 2722: int iv, is, len;
1.187 schwarze 2723: char sign;
1.89 kristaps 2724:
1.238 schwarze 2725: key = val = buf->buf + pos;
2726: if (*key == '\0')
1.277 schwarze 2727: return ROFF_IGN;
1.212 schwarze 2728:
2729: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2730: if (key[keysz] == '\\')
1.277 schwarze 2731: return ROFF_IGN;
1.89 kristaps 2732:
1.187 schwarze 2733: sign = *val;
1.238 schwarze 2734: if (sign == '+' || sign == '-')
1.187 schwarze 2735: val++;
2736:
1.327 schwarze 2737: len = 0;
2738: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2739: return ROFF_IGN;
2740:
2741: step = val + len;
2742: while (isspace((unsigned char)*step))
2743: step++;
2744: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2745: is = INT_MIN;
1.109 kristaps 2746:
1.327 schwarze 2747: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 2748: return ROFF_IGN;
1.203 schwarze 2749: }
2750:
2751: static enum rofferr
2752: roff_rr(ROFF_ARGS)
2753: {
2754: struct roffreg *reg, **prev;
1.212 schwarze 2755: char *name, *cp;
2756: size_t namesz;
1.203 schwarze 2757:
1.238 schwarze 2758: name = cp = buf->buf + pos;
2759: if (*name == '\0')
1.277 schwarze 2760: return ROFF_IGN;
1.212 schwarze 2761: namesz = roff_getname(r, &cp, ln, pos);
2762: name[namesz] = '\0';
1.203 schwarze 2763:
2764: prev = &r->regtab;
2765: while (1) {
2766: reg = *prev;
1.238 schwarze 2767: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2768: break;
2769: prev = ®->next;
2770: }
1.238 schwarze 2771: if (reg != NULL) {
1.203 schwarze 2772: *prev = reg->next;
2773: free(reg->key.p);
2774: free(reg);
2775: }
1.277 schwarze 2776: return ROFF_IGN;
1.122 schwarze 2777: }
2778:
1.266 schwarze 2779: /* --- handler functions for roff requests -------------------------------- */
2780:
1.122 schwarze 2781: static enum rofferr
2782: roff_rm(ROFF_ARGS)
2783: {
2784: const char *name;
2785: char *cp;
1.212 schwarze 2786: size_t namesz;
1.122 schwarze 2787:
1.238 schwarze 2788: cp = buf->buf + pos;
2789: while (*cp != '\0') {
1.212 schwarze 2790: name = cp;
1.238 schwarze 2791: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2792: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 2793: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 2794: if (name[namesz] == '\\')
1.212 schwarze 2795: break;
1.122 schwarze 2796: }
1.277 schwarze 2797: return ROFF_IGN;
1.178 schwarze 2798: }
2799:
2800: static enum rofferr
2801: roff_it(ROFF_ARGS)
2802: {
2803: int iv;
2804:
2805: /* Parse the number of lines. */
1.261 schwarze 2806:
2807: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2808: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2809: ln, ppos, buf->buf + 1);
1.277 schwarze 2810: return ROFF_IGN;
1.178 schwarze 2811: }
2812:
1.262 schwarze 2813: while (isspace((unsigned char)buf->buf[pos]))
2814: pos++;
2815:
2816: /*
2817: * Arm the input line trap.
2818: * Special-casing "an-trap" is an ugly workaround to cope
2819: * with DocBook stupidly fiddling with man(7) internals.
2820: */
1.261 schwarze 2821:
1.178 schwarze 2822: roffit_lines = iv;
1.262 schwarze 2823: roffit_macro = mandoc_strdup(iv != 1 ||
2824: strcmp(buf->buf + pos, "an-trap") ?
2825: buf->buf + pos : "br");
1.277 schwarze 2826: return ROFF_IGN;
1.175 schwarze 2827: }
2828:
2829: static enum rofferr
2830: roff_Dd(ROFF_ARGS)
2831: {
1.315 schwarze 2832: int mask;
2833: enum roff_tok t, te;
1.227 schwarze 2834:
1.315 schwarze 2835: switch (tok) {
2836: case ROFF_Dd:
2837: tok = MDOC_Dd;
2838: te = MDOC_MAX;
2839: if (r->format == 0)
2840: r->format = MPARSE_MDOC;
2841: mask = MPARSE_MDOC | MPARSE_QUICK;
2842: break;
2843: case ROFF_TH:
2844: tok = MAN_TH;
2845: te = MAN_MAX;
2846: if (r->format == 0)
2847: r->format = MPARSE_MAN;
2848: mask = MPARSE_QUICK;
2849: break;
2850: default:
2851: abort();
2852: }
2853: if ((r->options & mask) == 0)
2854: for (t = tok; t < te; t++)
2855: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 2856: return ROFF_CONT;
1.109 kristaps 2857: }
2858:
2859: static enum rofferr
2860: roff_TE(ROFF_ARGS)
2861: {
1.321 schwarze 2862: if (r->tbl == NULL) {
1.221 schwarze 2863: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2864: ln, ppos, "TE");
1.321 schwarze 2865: return ROFF_IGN;
2866: }
2867: if (tbl_end(r->tbl) == 0) {
2868: r->tbl = NULL;
1.258 schwarze 2869: free(buf->buf);
2870: buf->buf = mandoc_strdup(".sp");
2871: buf->sz = 4;
1.329 schwarze 2872: *offs = 0;
1.277 schwarze 2873: return ROFF_REPARSE;
1.258 schwarze 2874: }
1.321 schwarze 2875: r->tbl = NULL;
1.277 schwarze 2876: return ROFF_IGN;
1.112 kristaps 2877: }
2878:
2879: static enum rofferr
2880: roff_T_(ROFF_ARGS)
2881: {
2882:
2883: if (NULL == r->tbl)
1.221 schwarze 2884: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2885: ln, ppos, "T&");
1.112 kristaps 2886: else
1.296 schwarze 2887: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 2888:
1.277 schwarze 2889: return ROFF_IGN;
1.109 kristaps 2890: }
2891:
1.230 schwarze 2892: /*
2893: * Handle in-line equation delimiters.
2894: */
2895: static enum rofferr
1.238 schwarze 2896: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2897: {
1.233 schwarze 2898: char *cp1, *cp2;
2899: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2900:
1.230 schwarze 2901: /*
2902: * Outside equations, look for an opening delimiter.
2903: * If we are inside an equation, we already know it is
2904: * in-line, or this function wouldn't have been called;
2905: * so look for a closing delimiter.
2906: */
2907:
1.238 schwarze 2908: cp1 = buf->buf + pos;
1.230 schwarze 2909: cp2 = strchr(cp1, r->eqn == NULL ?
2910: r->last_eqn->odelim : r->last_eqn->cdelim);
2911: if (cp2 == NULL)
1.277 schwarze 2912: return ROFF_CONT;
1.230 schwarze 2913:
1.233 schwarze 2914: *cp2++ = '\0';
2915: bef_pr = bef_nl = aft_nl = aft_pr = "";
2916:
2917: /* Handle preceding text, protecting whitespace. */
2918:
1.238 schwarze 2919: if (*buf->buf != '\0') {
1.233 schwarze 2920: if (r->eqn == NULL)
2921: bef_pr = "\\&";
2922: bef_nl = "\n";
2923: }
2924:
2925: /*
2926: * Prepare replacing the delimiter with an equation macro
2927: * and drop leading white space from the equation.
2928: */
1.230 schwarze 2929:
1.233 schwarze 2930: if (r->eqn == NULL) {
2931: while (*cp2 == ' ')
2932: cp2++;
2933: mac = ".EQ";
2934: } else
2935: mac = ".EN";
2936:
2937: /* Handle following text, protecting whitespace. */
2938:
2939: if (*cp2 != '\0') {
2940: aft_nl = "\n";
2941: if (r->eqn != NULL)
2942: aft_pr = "\\&";
2943: }
2944:
2945: /* Do the actual replacement. */
2946:
1.238 schwarze 2947: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2948: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2949: free(buf->buf);
2950: buf->buf = cp1;
1.230 schwarze 2951:
2952: /* Toggle the in-line state of the eqn subsystem. */
2953:
2954: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2955: return ROFF_REPARSE;
1.151 kristaps 2956: }
2957:
1.235 schwarze 2958: static enum rofferr
2959: roff_EQ(ROFF_ARGS)
1.125 kristaps 2960: {
1.319 schwarze 2961: struct roff_node *n;
2962:
1.322 schwarze 2963: if (r->man->macroset == MACROSET_MAN)
2964: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 2965: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
2966: if (ln > r->man->last->line)
2967: n->flags |= NODE_LINE;
2968: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
2969: n->eqn->expectargs = UINT_MAX;
2970: roff_node_append(r->man, n);
2971: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 2972:
1.238 schwarze 2973: assert(r->eqn == NULL);
1.319 schwarze 2974: if (r->last_eqn == NULL)
2975: r->last_eqn = eqn_alloc(r->parse);
2976: else
2977: eqn_reset(r->last_eqn);
2978: r->eqn = r->last_eqn;
2979: r->eqn->node = n;
1.151 kristaps 2980:
1.238 schwarze 2981: if (buf->buf[pos] != '\0')
1.235 schwarze 2982: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2983: ".EQ %s", buf->buf + pos);
1.151 kristaps 2984:
1.277 schwarze 2985: return ROFF_IGN;
1.125 kristaps 2986: }
2987:
2988: static enum rofferr
2989: roff_EN(ROFF_ARGS)
2990: {
1.319 schwarze 2991: if (r->eqn != NULL) {
2992: eqn_parse(r->eqn);
2993: r->eqn = NULL;
2994: } else
2995: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
2996: if (buf->buf[pos] != '\0')
2997: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2998: "EN %s", buf->buf + pos);
1.277 schwarze 2999: return ROFF_IGN;
1.125 kristaps 3000: }
3001:
3002: static enum rofferr
1.109 kristaps 3003: roff_TS(ROFF_ARGS)
3004: {
1.321 schwarze 3005: if (r->tbl != NULL) {
1.221 schwarze 3006: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
3007: ln, ppos, "TS breaks TS");
1.321 schwarze 3008: tbl_end(r->tbl);
1.115 kristaps 3009: }
1.321 schwarze 3010: r->tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 3011: if (r->last_tbl)
1.321 schwarze 3012: r->last_tbl->next = r->tbl;
1.113 kristaps 3013: else
1.321 schwarze 3014: r->first_tbl = r->tbl;
3015: r->last_tbl = r->tbl;
1.297 schwarze 3016: return ROFF_IGN;
3017: }
3018:
3019: static enum rofferr
3020: roff_onearg(ROFF_ARGS)
3021: {
3022: struct roff_node *n;
3023: char *cp;
1.305 schwarze 3024: int npos;
1.297 schwarze 3025:
1.302 schwarze 3026: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3027: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3028: tok == ROFF_ti))
1.302 schwarze 3029: man_breakscope(r->man, tok);
3030:
1.309 schwarze 3031: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3032: r->man->last = roffce_node;
3033: r->man->next = ROFF_NEXT_SIBLING;
3034: }
3035:
1.297 schwarze 3036: roff_elem_alloc(r->man, ln, ppos, tok);
3037: n = r->man->last;
3038:
3039: cp = buf->buf + pos;
3040: if (*cp != '\0') {
3041: while (*cp != '\0' && *cp != ' ')
3042: cp++;
3043: while (*cp == ' ')
3044: *cp++ = '\0';
3045: if (*cp != '\0')
3046: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
3047: r->parse, ln, cp - buf->buf,
3048: "%s ... %s", roff_name[tok], cp);
3049: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3050: }
3051:
1.309 schwarze 3052: if (tok == ROFF_ce || tok == ROFF_rj) {
3053: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3054: roff_word_alloc(r->man, ln, pos, "1");
3055: r->man->last->flags |= NODE_NOSRC;
3056: }
3057: npos = 0;
3058: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3059: &roffce_lines, 0) == 0) {
3060: mandoc_vmsg(MANDOCERR_CE_NONUM,
3061: r->parse, ln, pos, "ce %s", buf->buf + pos);
3062: roffce_lines = 1;
3063: }
3064: if (roffce_lines < 1) {
3065: r->man->last = r->man->last->parent;
3066: roffce_node = NULL;
3067: roffce_lines = 0;
3068: } else
3069: roffce_node = r->man->last->parent;
3070: } else {
3071: n->flags |= NODE_VALID | NODE_ENDED;
3072: r->man->last = n;
3073: }
3074: n->flags |= NODE_LINE;
1.300 schwarze 3075: r->man->next = ROFF_NEXT_SIBLING;
3076: return ROFF_IGN;
3077: }
3078:
3079: static enum rofferr
3080: roff_manyarg(ROFF_ARGS)
3081: {
3082: struct roff_node *n;
3083: char *sp, *ep;
3084:
3085: roff_elem_alloc(r->man, ln, ppos, tok);
3086: n = r->man->last;
3087:
3088: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3089: while (*ep != '\0' && *ep != ' ')
3090: ep++;
3091: while (*ep == ' ')
3092: *ep++ = '\0';
3093: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3094: }
3095:
3096: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3097: r->man->last = n;
3098: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3099: return ROFF_IGN;
1.251 schwarze 3100: }
3101:
3102: static enum rofferr
1.311 schwarze 3103: roff_als(ROFF_ARGS)
3104: {
3105: char *oldn, *newn, *end, *value;
3106: size_t oldsz, newsz, valsz;
3107:
3108: newn = oldn = buf->buf + pos;
3109: if (*newn == '\0')
3110: return ROFF_IGN;
3111:
3112: newsz = roff_getname(r, &oldn, ln, pos);
3113: if (newn[newsz] == '\\' || *oldn == '\0')
3114: return ROFF_IGN;
3115:
3116: end = oldn;
3117: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3118: if (oldsz == 0)
3119: return ROFF_IGN;
3120:
1.315 schwarze 3121: valsz = mandoc_asprintf(&value, ".%.*s \\$*\\\"\n",
3122: (int)oldsz, oldn);
1.311 schwarze 3123: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3124: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3125: free(value);
3126: return ROFF_IGN;
3127: }
3128:
3129: static enum rofferr
1.296 schwarze 3130: roff_br(ROFF_ARGS)
1.251 schwarze 3131: {
1.302 schwarze 3132: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3133: man_breakscope(r->man, ROFF_br);
1.296 schwarze 3134: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3135: if (buf->buf[pos] != '\0')
3136: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3137: "%s %s", roff_name[tok], buf->buf + pos);
3138: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3139: r->man->next = ROFF_NEXT_SIBLING;
3140: return ROFF_IGN;
1.92 schwarze 3141: }
3142:
1.105 kristaps 3143: static enum rofferr
1.174 kristaps 3144: roff_cc(ROFF_ARGS)
3145: {
3146: const char *p;
3147:
1.238 schwarze 3148: p = buf->buf + pos;
1.174 kristaps 3149:
1.238 schwarze 3150: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3151: r->control = '\0';
1.174 kristaps 3152:
1.238 schwarze 3153: if (*p != '\0')
1.260 schwarze 3154: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3155: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3156:
1.277 schwarze 3157: return ROFF_IGN;
1.174 kristaps 3158: }
3159:
3160: static enum rofferr
1.303 schwarze 3161: roff_ec(ROFF_ARGS)
3162: {
3163: const char *p;
3164:
3165: p = buf->buf + pos;
3166: if (*p == '\0')
3167: r->escape = '\\';
3168: else {
3169: r->escape = *p;
3170: if (*++p != '\0')
3171: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3172: ln, p - buf->buf, "ec ... %s", p);
3173: }
3174: return ROFF_IGN;
3175: }
3176:
3177: static enum rofferr
3178: roff_eo(ROFF_ARGS)
3179: {
3180: r->escape = '\0';
3181: if (buf->buf[pos] != '\0')
3182: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3183: ln, pos, "eo %s", buf->buf + pos);
3184: return ROFF_IGN;
1.330 schwarze 3185: }
3186:
3187: static enum rofferr
3188: roff_nop(ROFF_ARGS)
3189: {
3190: while (buf->buf[pos] == ' ')
3191: pos++;
3192: *offs = pos;
3193: return ROFF_RERUN;
1.303 schwarze 3194: }
3195:
3196: static enum rofferr
1.164 kristaps 3197: roff_tr(ROFF_ARGS)
3198: {
3199: const char *p, *first, *second;
3200: size_t fsz, ssz;
3201: enum mandoc_esc esc;
3202:
1.238 schwarze 3203: p = buf->buf + pos;
1.164 kristaps 3204:
1.238 schwarze 3205: if (*p == '\0') {
1.260 schwarze 3206: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 3207: return ROFF_IGN;
1.164 kristaps 3208: }
3209:
1.238 schwarze 3210: while (*p != '\0') {
1.164 kristaps 3211: fsz = ssz = 1;
3212:
3213: first = p++;
1.238 schwarze 3214: if (*first == '\\') {
1.164 kristaps 3215: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3216: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3217: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3218: ln, (int)(p - buf->buf), first);
1.277 schwarze 3219: return ROFF_IGN;
1.164 kristaps 3220: }
3221: fsz = (size_t)(p - first);
3222: }
3223:
3224: second = p++;
1.238 schwarze 3225: if (*second == '\\') {
1.164 kristaps 3226: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3227: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3228: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3229: ln, (int)(p - buf->buf), second);
1.277 schwarze 3230: return ROFF_IGN;
1.164 kristaps 3231: }
3232: ssz = (size_t)(p - second);
1.238 schwarze 3233: } else if (*second == '\0') {
1.260 schwarze 3234: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3235: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3236: second = " ";
1.165 kristaps 3237: p--;
1.164 kristaps 3238: }
3239:
1.167 kristaps 3240: if (fsz > 1) {
1.207 schwarze 3241: roff_setstrn(&r->xmbtab, first, fsz,
3242: second, ssz, 0);
1.167 kristaps 3243: continue;
3244: }
3245:
1.238 schwarze 3246: if (r->xtab == NULL)
1.207 schwarze 3247: r->xtab = mandoc_calloc(128,
3248: sizeof(struct roffstr));
1.167 kristaps 3249:
3250: free(r->xtab[(int)*first].p);
3251: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3252: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3253: }
3254:
1.277 schwarze 3255: return ROFF_IGN;
1.164 kristaps 3256: }
3257:
3258: static enum rofferr
1.306 schwarze 3259: roff_rn(ROFF_ARGS)
3260: {
3261: const char *value;
3262: char *oldn, *newn, *end;
3263: size_t oldsz, newsz;
1.315 schwarze 3264: int deftype;
1.306 schwarze 3265:
3266: oldn = newn = buf->buf + pos;
3267: if (*oldn == '\0')
3268: return ROFF_IGN;
3269:
3270: oldsz = roff_getname(r, &newn, ln, pos);
3271: if (oldn[oldsz] == '\\' || *newn == '\0')
3272: return ROFF_IGN;
3273:
3274: end = newn;
3275: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3276: if (newsz == 0)
3277: return ROFF_IGN;
3278:
1.315 schwarze 3279: deftype = ROFFDEF_ANY;
3280: value = roff_getstrn(r, oldn, oldsz, &deftype);
3281: switch (deftype) {
3282: case ROFFDEF_USER:
1.306 schwarze 3283: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3284: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3285: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3286: break;
3287: case ROFFDEF_PRE:
3288: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3289: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3290: break;
3291: case ROFFDEF_REN:
1.306 schwarze 3292: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3293: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3294: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3295: break;
3296: case ROFFDEF_STD:
1.306 schwarze 3297: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3298: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3299: break;
3300: default:
3301: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3302: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3303: break;
3304: }
1.306 schwarze 3305: return ROFF_IGN;
3306: }
3307:
3308: static enum rofferr
1.105 kristaps 3309: roff_so(ROFF_ARGS)
3310: {
1.249 schwarze 3311: char *name, *cp;
1.105 kristaps 3312:
1.238 schwarze 3313: name = buf->buf + pos;
1.224 schwarze 3314: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3315:
3316: /*
3317: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3318: * opening anything that's not in our cwd or anything beneath
3319: * it. Thus, explicitly disallow traversing up the file-system
3320: * or using absolute paths.
3321: */
3322:
1.238 schwarze 3323: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3324: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3325: ".so %s", name);
1.249 schwarze 3326: buf->sz = mandoc_asprintf(&cp,
3327: ".sp\nSee the file %s.\n.sp", name) + 1;
3328: free(buf->buf);
3329: buf->buf = cp;
3330: *offs = 0;
1.277 schwarze 3331: return ROFF_REPARSE;
1.105 kristaps 3332: }
3333:
3334: *offs = pos;
1.277 schwarze 3335: return ROFF_SO;
1.105 kristaps 3336: }
1.92 schwarze 3337:
1.266 schwarze 3338: /* --- user defined strings and macros ------------------------------------ */
3339:
1.106 kristaps 3340: static enum rofferr
3341: roff_userdef(ROFF_ARGS)
1.99 kristaps 3342: {
1.311 schwarze 3343: const char *arg[16], *ap;
1.106 kristaps 3344: char *cp, *n1, *n2;
1.292 schwarze 3345: int expand_count, i, ib, ie;
1.263 schwarze 3346: size_t asz, rsz;
1.106 kristaps 3347:
3348: /*
3349: * Collect pointers to macro argument strings
1.188 schwarze 3350: * and NUL-terminate them.
1.106 kristaps 3351: */
1.263 schwarze 3352:
1.273 schwarze 3353: r->argc = 0;
1.238 schwarze 3354: cp = buf->buf + pos;
1.311 schwarze 3355: for (i = 0; i < 16; i++) {
1.273 schwarze 3356: if (*cp == '\0')
3357: arg[i] = "";
3358: else {
3359: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3360: r->argc = i + 1;
3361: }
3362: }
1.99 kristaps 3363:
1.106 kristaps 3364: /*
3365: * Expand macro arguments.
1.99 kristaps 3366: */
1.263 schwarze 3367:
3368: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 3369: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 3370: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 3371: expand_count = 0;
1.263 schwarze 3372: while (*cp != '\0') {
3373:
3374: /* Scan ahead for the next argument invocation. */
3375:
3376: if (*cp++ != '\\')
3377: continue;
3378: if (*cp++ != '$')
3379: continue;
1.274 schwarze 3380: if (*cp == '*') { /* \\$* inserts all arguments */
3381: ib = 0;
3382: ie = r->argc - 1;
3383: } else { /* \\$1 .. \\$9 insert one argument */
3384: ib = ie = *cp - '1';
3385: if (ib < 0 || ib > 8)
3386: continue;
3387: }
1.263 schwarze 3388: cp -= 2;
1.292 schwarze 3389:
3390: /*
3391: * Prevent infinite recursion.
3392: */
3393:
3394: if (cp >= n2)
3395: expand_count = 1;
3396: else if (++expand_count > EXPAND_LIMIT) {
3397: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3398: ln, (int)(cp - n1), NULL);
1.293 schwarze 3399: free(buf->buf);
3400: buf->buf = n1;
1.329 schwarze 3401: *offs = 0;
1.292 schwarze 3402: return ROFF_IGN;
3403: }
1.263 schwarze 3404:
3405: /*
3406: * Determine the size of the expanded argument,
3407: * taking escaping of quotes into account.
3408: */
3409:
1.274 schwarze 3410: asz = ie > ib ? ie - ib : 0; /* for blanks */
3411: for (i = ib; i <= ie; i++) {
3412: for (ap = arg[i]; *ap != '\0'; ap++) {
3413: asz++;
3414: if (*ap == '"')
3415: asz += 3;
3416: }
1.263 schwarze 3417: }
3418: if (asz != 3) {
3419:
3420: /*
3421: * Determine the size of the rest of the
3422: * unexpanded macro, including the NUL.
3423: */
3424:
3425: rsz = buf->sz - (cp - n1) - 3;
3426:
3427: /*
3428: * When shrinking, move before
3429: * releasing the storage.
3430: */
3431:
3432: if (asz < 3)
3433: memmove(cp + asz, cp + 3, rsz);
3434:
3435: /*
3436: * Resize the storage for the macro
3437: * and readjust the parse pointer.
3438: */
3439:
3440: buf->sz += asz - 3;
3441: n2 = mandoc_realloc(n1, buf->sz);
3442: cp = n2 + (cp - n1);
3443: n1 = n2;
3444:
3445: /*
3446: * When growing, make room
3447: * for the expanded argument.
3448: */
3449:
3450: if (asz > 3)
3451: memmove(cp + asz, cp + 3, rsz);
3452: }
3453:
3454: /* Copy the expanded argument, escaping quotes. */
3455:
3456: n2 = cp;
1.274 schwarze 3457: for (i = ib; i <= ie; i++) {
3458: for (ap = arg[i]; *ap != '\0'; ap++) {
3459: if (*ap == '"') {
3460: memcpy(n2, "\\(dq", 4);
3461: n2 += 4;
3462: } else
3463: *n2++ = *ap;
3464: }
3465: if (i < ie)
3466: *n2++ = ' ';
1.106 kristaps 3467: }
1.99 kristaps 3468: }
3469:
1.106 kristaps 3470: /*
3471: * Replace the macro invocation
3472: * by the expanded macro.
3473: */
1.263 schwarze 3474:
1.238 schwarze 3475: free(buf->buf);
3476: buf->buf = n1;
1.248 schwarze 3477: *offs = 0;
1.106 kristaps 3478:
1.277 schwarze 3479: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3480: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3481: }
1.121 schwarze 3482:
1.306 schwarze 3483: /*
3484: * Calling a high-level macro that was renamed with .rn.
3485: * r->current_string has already been set up by roff_parse().
3486: */
3487: static enum rofferr
3488: roff_renamed(ROFF_ARGS)
3489: {
3490: char *nbuf;
3491:
1.315 schwarze 3492: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3493: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3494: free(buf->buf);
3495: buf->buf = nbuf;
1.329 schwarze 3496: *offs = 0;
1.306 schwarze 3497: return ROFF_CONT;
3498: }
3499:
1.212 schwarze 3500: static size_t
1.121 schwarze 3501: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3502: {
3503: char *name, *cp;
1.212 schwarze 3504: size_t namesz;
1.121 schwarze 3505:
3506: name = *cpp;
3507: if ('\0' == *name)
1.277 schwarze 3508: return 0;
1.121 schwarze 3509:
1.212 schwarze 3510: /* Read until end of name and terminate it with NUL. */
3511: for (cp = name; 1; cp++) {
3512: if ('\0' == *cp || ' ' == *cp) {
3513: namesz = cp - name;
3514: break;
3515: }
1.121 schwarze 3516: if ('\\' != *cp)
3517: continue;
1.215 schwarze 3518: namesz = cp - name;
3519: if ('{' == cp[1] || '}' == cp[1])
3520: break;
1.121 schwarze 3521: cp++;
3522: if ('\\' == *cp)
3523: continue;
1.224 schwarze 3524: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3525: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3526: mandoc_escape((const char **)&cp, NULL, NULL);
3527: break;
1.121 schwarze 3528: }
3529:
3530: /* Read past spaces. */
3531: while (' ' == *cp)
3532: cp++;
3533:
3534: *cpp = cp;
1.277 schwarze 3535: return namesz;
1.121 schwarze 3536: }
3537:
1.106 kristaps 3538: /*
3539: * Store *string into the user-defined string called *name.
3540: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3541: * append == 0: replace mode
3542: * append == 1: single-line append mode
3543: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3544: */
1.94 kristaps 3545: static void
1.106 kristaps 3546: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3547: int append)
1.92 schwarze 3548: {
1.315 schwarze 3549: size_t namesz;
1.164 kristaps 3550:
1.315 schwarze 3551: namesz = strlen(name);
3552: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 3553: string ? strlen(string) : 0, append);
1.315 schwarze 3554: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 3555: }
3556:
3557: static void
1.166 kristaps 3558: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3559: const char *string, size_t stringsz, int append)
1.164 kristaps 3560: {
1.166 kristaps 3561: struct roffkv *n;
1.164 kristaps 3562: char *c;
3563: int i;
3564: size_t oldch, newch;
1.92 schwarze 3565:
1.106 kristaps 3566: /* Search for an existing string with the same name. */
1.164 kristaps 3567: n = *r;
3568:
1.211 schwarze 3569: while (n && (namesz != n->key.sz ||
3570: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3571: n = n->next;
1.94 kristaps 3572:
3573: if (NULL == n) {
1.106 kristaps 3574: /* Create a new string table entry. */
1.166 kristaps 3575: n = mandoc_malloc(sizeof(struct roffkv));
3576: n->key.p = mandoc_strndup(name, namesz);
3577: n->key.sz = namesz;
3578: n->val.p = NULL;
3579: n->val.sz = 0;
1.164 kristaps 3580: n->next = *r;
3581: *r = n;
1.193 schwarze 3582: } else if (0 == append) {
1.166 kristaps 3583: free(n->val.p);
3584: n->val.p = NULL;
3585: n->val.sz = 0;
1.106 kristaps 3586: }
3587:
3588: if (NULL == string)
3589: return;
3590:
3591: /*
3592: * One additional byte for the '\n' in multiline mode,
3593: * and one for the terminating '\0'.
3594: */
1.193 schwarze 3595: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3596:
1.166 kristaps 3597: if (NULL == n->val.p) {
3598: n->val.p = mandoc_malloc(newch);
3599: *n->val.p = '\0';
1.106 kristaps 3600: oldch = 0;
3601: } else {
1.166 kristaps 3602: oldch = n->val.sz;
3603: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3604: }
3605:
3606: /* Skip existing content in the destination buffer. */
1.166 kristaps 3607: c = n->val.p + (int)oldch;
1.106 kristaps 3608:
3609: /* Append new content to the destination buffer. */
1.164 kristaps 3610: i = 0;
3611: while (i < (int)stringsz) {
1.106 kristaps 3612: /*
3613: * Rudimentary roff copy mode:
3614: * Handle escaped backslashes.
3615: */
1.164 kristaps 3616: if ('\\' == string[i] && '\\' == string[i + 1])
3617: i++;
3618: *c++ = string[i++];
1.106 kristaps 3619: }
1.94 kristaps 3620:
1.106 kristaps 3621: /* Append terminating bytes. */
1.193 schwarze 3622: if (1 < append)
1.106 kristaps 3623: *c++ = '\n';
1.163 kristaps 3624:
1.106 kristaps 3625: *c = '\0';
1.166 kristaps 3626: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3627: }
3628:
1.94 kristaps 3629: static const char *
1.325 schwarze 3630: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 3631: int *deftype)
1.92 schwarze 3632: {
1.315 schwarze 3633: const struct roffkv *n;
1.325 schwarze 3634: int found, i;
1.315 schwarze 3635: enum roff_tok tok;
3636:
1.325 schwarze 3637: found = 0;
3638: for (n = r->strtab; n != NULL; n = n->next) {
3639: if (strncmp(name, n->key.p, len) != 0 ||
3640: n->key.p[len] != '\0' || n->val.p == NULL)
3641: continue;
3642: if (*deftype & ROFFDEF_USER) {
3643: *deftype = ROFFDEF_USER;
3644: return n->val.p;
3645: } else {
3646: found = 1;
3647: break;
3648: }
3649: }
3650: for (n = r->rentab; n != NULL; n = n->next) {
3651: if (strncmp(name, n->key.p, len) != 0 ||
3652: n->key.p[len] != '\0' || n->val.p == NULL)
3653: continue;
3654: if (*deftype & ROFFDEF_REN) {
3655: *deftype = ROFFDEF_REN;
3656: return n->val.p;
3657: } else {
3658: found = 1;
3659: break;
1.315 schwarze 3660: }
3661: }
1.325 schwarze 3662: for (i = 0; i < PREDEFS_MAX; i++) {
3663: if (strncmp(name, predefs[i].name, len) != 0 ||
3664: predefs[i].name[len] != '\0')
3665: continue;
3666: if (*deftype & ROFFDEF_PRE) {
3667: *deftype = ROFFDEF_PRE;
3668: return predefs[i].str;
3669: } else {
3670: found = 1;
3671: break;
1.315 schwarze 3672: }
3673: }
1.325 schwarze 3674: if (r->man->macroset != MACROSET_MAN) {
3675: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3676: if (strncmp(name, roff_name[tok], len) != 0 ||
3677: roff_name[tok][len] != '\0')
3678: continue;
3679: if (*deftype & ROFFDEF_STD) {
3680: *deftype = ROFFDEF_STD;
3681: return NULL;
3682: } else {
3683: found = 1;
3684: break;
1.315 schwarze 3685: }
3686: }
3687: }
1.325 schwarze 3688: if (r->man->macroset != MACROSET_MDOC) {
3689: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3690: if (strncmp(name, roff_name[tok], len) != 0 ||
3691: roff_name[tok][len] != '\0')
3692: continue;
3693: if (*deftype & ROFFDEF_STD) {
3694: *deftype = ROFFDEF_STD;
3695: return NULL;
3696: } else {
3697: found = 1;
3698: break;
1.315 schwarze 3699: }
3700: }
1.325 schwarze 3701: }
3702:
3703: if (found == 0 && *deftype != ROFFDEF_ANY) {
3704: if (*deftype & ROFFDEF_REN) {
3705: /*
3706: * This might still be a request,
3707: * so do not treat it as undefined yet.
3708: */
3709: *deftype = ROFFDEF_UNDEF;
3710: return NULL;
1.315 schwarze 3711: }
1.325 schwarze 3712:
3713: /* Using an undefined string defines it to be empty. */
3714:
3715: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3716: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 3717: }
1.325 schwarze 3718:
1.315 schwarze 3719: *deftype = 0;
1.277 schwarze 3720: return NULL;
1.92 schwarze 3721: }
3722:
1.94 kristaps 3723: static void
1.167 kristaps 3724: roff_freestr(struct roffkv *r)
1.92 schwarze 3725: {
1.166 kristaps 3726: struct roffkv *n, *nn;
1.92 schwarze 3727:
1.167 kristaps 3728: for (n = r; n; n = nn) {
1.166 kristaps 3729: free(n->key.p);
3730: free(n->val.p);
1.92 schwarze 3731: nn = n->next;
3732: free(n);
3733: }
1.114 kristaps 3734: }
1.266 schwarze 3735:
3736: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 3737:
3738: /*
3739: * Duplicate an input string, making the appropriate character
3740: * conversations (as stipulated by `tr') along the way.
3741: * Returns a heap-allocated string with all the replacements made.
3742: */
3743: char *
3744: roff_strdup(const struct roff *r, const char *p)
3745: {
1.166 kristaps 3746: const struct roffkv *cp;
1.164 kristaps 3747: char *res;
3748: const char *pp;
3749: size_t ssz, sz;
3750: enum mandoc_esc esc;
3751:
1.167 kristaps 3752: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3753: return mandoc_strdup(p);
1.164 kristaps 3754: else if ('\0' == *p)
1.277 schwarze 3755: return mandoc_strdup("");
1.164 kristaps 3756:
3757: /*
3758: * Step through each character looking for term matches
3759: * (remember that a `tr' can be invoked with an escape, which is
3760: * a glyph but the escape is multi-character).
3761: * We only do this if the character hash has been initialised
3762: * and the string is >0 length.
3763: */
3764:
3765: res = NULL;
3766: ssz = 0;
3767:
3768: while ('\0' != *p) {
1.289 schwarze 3769: assert((unsigned int)*p < 128);
3770: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3771: sz = r->xtab[(int)*p].sz;
3772: res = mandoc_realloc(res, ssz + sz + 1);
3773: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3774: ssz += sz;
3775: p++;
3776: continue;
3777: } else if ('\\' != *p) {
3778: res = mandoc_realloc(res, ssz + 2);
3779: res[ssz++] = *p++;
3780: continue;
3781: }
3782:
1.164 kristaps 3783: /* Search for term matches. */
1.167 kristaps 3784: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3785: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3786: break;
3787:
3788: if (NULL != cp) {
3789: /*
3790: * A match has been found.
3791: * Append the match to the array and move
3792: * forward by its keysize.
3793: */
1.207 schwarze 3794: res = mandoc_realloc(res,
3795: ssz + cp->val.sz + 1);
1.166 kristaps 3796: memcpy(res + ssz, cp->val.p, cp->val.sz);
3797: ssz += cp->val.sz;
3798: p += (int)cp->key.sz;
1.164 kristaps 3799: continue;
3800: }
3801:
1.167 kristaps 3802: /*
3803: * Handle escapes carefully: we need to copy
3804: * over just the escape itself, or else we might
3805: * do replacements within the escape itself.
3806: * Make sure to pass along the bogus string.
3807: */
3808: pp = p++;
3809: esc = mandoc_escape(&p, NULL, NULL);
3810: if (ESCAPE_ERROR == esc) {
3811: sz = strlen(pp);
1.164 kristaps 3812: res = mandoc_realloc(res, ssz + sz + 1);
3813: memcpy(res + ssz, pp, sz);
1.167 kristaps 3814: break;
1.164 kristaps 3815: }
1.207 schwarze 3816: /*
3817: * We bail out on bad escapes.
1.167 kristaps 3818: * No need to warn: we already did so when
3819: * roff_res() was called.
3820: */
3821: sz = (int)(p - pp);
3822: res = mandoc_realloc(res, ssz + sz + 1);
3823: memcpy(res + ssz, pp, sz);
3824: ssz += sz;
1.164 kristaps 3825: }
3826:
3827: res[(int)ssz] = '\0';
1.277 schwarze 3828: return res;
1.227 schwarze 3829: }
3830:
3831: int
3832: roff_getformat(const struct roff *r)
3833: {
3834:
1.277 schwarze 3835: return r->format;
1.174 kristaps 3836: }
3837:
3838: /*
1.207 schwarze 3839: * Find out whether a line is a macro line or not.
1.174 kristaps 3840: * If it is, adjust the current position and return one; if it isn't,
3841: * return zero and don't change the current position.
3842: * If the control character has been set with `.cc', then let that grain
3843: * precedence.
3844: * This is slighly contrary to groff, where using the non-breaking
3845: * control character when `cc' has been invoked will cause the
3846: * non-breaking macro contents to be printed verbatim.
3847: */
3848: int
3849: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3850: {
3851: int pos;
3852:
3853: pos = *ppos;
3854:
1.303 schwarze 3855: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 3856: pos++;
1.303 schwarze 3857: else if (r->control != '\0')
1.277 schwarze 3858: return 0;
1.174 kristaps 3859: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3860: pos += 2;
3861: else if ('.' == cp[pos] || '\'' == cp[pos])
3862: pos++;
3863: else
1.277 schwarze 3864: return 0;
1.174 kristaps 3865:
3866: while (' ' == cp[pos] || '\t' == cp[pos])
3867: pos++;
3868:
3869: *ppos = pos;
1.277 schwarze 3870: return 1;
1.74 kristaps 3871: }
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