Annotation of src/usr.bin/mandoc/roff.c, Revision 1.210
1.210 ! schwarze 1: /* $OpenBSD: roff.c,v 1.209 2018/08/20 17:31:44 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.197 schwarze 4: * Copyright (c) 2010-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 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.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.167 schwarze 23: #include <stddef.h>
24: #include <stdint.h>
1.51 schwarze 25: #include <stdio.h>
1.1 schwarze 26: #include <stdlib.h>
27: #include <string.h>
28:
29: #include "mandoc.h"
1.74 schwarze 30: #include "mandoc_aux.h"
1.167 schwarze 31: #include "mandoc_ohash.h"
1.137 schwarze 32: #include "roff.h"
1.98 daniel 33: #include "libmandoc.h"
1.138 schwarze 34: #include "roff_int.h"
1.27 schwarze 35: #include "libroff.h"
1.2 schwarze 36:
1.43 schwarze 37: /* Maximum number of string expansions per line, to break infinite loops. */
38: #define EXPAND_LIMIT 1000
39:
1.187 schwarze 40: /* Types of definitions of macros and strings. */
41: #define ROFFDEF_USER (1 << 1) /* User-defined. */
42: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
43: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
44: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
45: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
46: ROFFDEF_REN | ROFFDEF_STD)
1.197 schwarze 47: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.187 schwarze 48:
1.138 schwarze 49: /* --- data types --------------------------------------------------------- */
50:
1.41 schwarze 51: /*
1.42 schwarze 52: * An incredibly-simple string buffer.
53: */
1.8 schwarze 54: struct roffstr {
1.42 schwarze 55: char *p; /* nil-terminated buffer */
56: size_t sz; /* saved strlen(p) */
57: };
58:
59: /*
60: * A key-value roffstr pair as part of a singly-linked list.
61: */
62: struct roffkv {
63: struct roffstr key;
64: struct roffstr val;
65: struct roffkv *next; /* next in list */
1.8 schwarze 66: };
67:
1.52 schwarze 68: /*
69: * A single number register as part of a singly-linked list.
70: */
71: struct roffreg {
72: struct roffstr key;
1.53 schwarze 73: int val;
1.199 schwarze 74: int step;
1.52 schwarze 75: struct roffreg *next;
76: };
77:
1.167 schwarze 78: /*
79: * Association of request and macro names with token IDs.
80: */
81: struct roffreq {
82: enum roff_tok tok;
83: char name[];
84: };
85:
1.1 schwarze 86: struct roff {
1.35 schwarze 87: struct mparse *parse; /* parse point */
1.168 schwarze 88: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 89: struct roffnode *last; /* leaf of stack */
1.96 schwarze 90: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 91: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 92: struct roffreg *regtab; /* number registers */
1.42 schwarze 93: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 94: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 95: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
96: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 97: const char *current_string; /* value of last called user macro */
1.27 schwarze 98: struct tbl_node *first_tbl; /* first table parsed */
99: struct tbl_node *last_tbl; /* last table parsed */
100: struct tbl_node *tbl; /* current table being parsed */
1.191 schwarze 101: struct eqn_node *last_eqn; /* equation parser */
102: struct eqn_node *eqn; /* active equation parser */
1.102 schwarze 103: int eqn_inline; /* current equation is inline */
1.96 schwarze 104: int options; /* parse options */
105: int rstacksz; /* current size limit of rstack */
106: int rstackpos; /* position in rstack */
1.99 schwarze 107: int format; /* current file in mdoc or man format */
1.96 schwarze 108: char control; /* control character */
1.175 schwarze 109: char escape; /* escape character */
1.1 schwarze 110: };
111:
112: struct roffnode {
1.166 schwarze 113: enum roff_tok tok; /* type of node */
1.1 schwarze 114: struct roffnode *parent; /* up one in stack */
115: int line; /* parse line */
116: int col; /* parse col */
1.16 schwarze 117: char *name; /* node name, e.g. macro name */
1.2 schwarze 118: char *end; /* end-rules: custom token */
119: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 120: int rule; /* current evaluation rule */
1.1 schwarze 121: };
122:
123: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 124: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 125: struct buf *buf, /* input buffer */ \
1.1 schwarze 126: int ln, /* parse line */ \
1.2 schwarze 127: int ppos, /* original pos in buffer */ \
128: int pos, /* current pos in buffer */ \
129: int *offs /* reset offset of buffer data */
1.1 schwarze 130:
131: typedef enum rofferr (*roffproc)(ROFF_ARGS);
132:
133: struct roffmac {
1.2 schwarze 134: roffproc proc; /* process new macro */
135: roffproc text; /* process as child text of macro */
136: roffproc sub; /* process as child of macro */
137: int flags;
138: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 139: };
140:
1.37 schwarze 141: struct predef {
142: const char *name; /* predefined input name */
143: const char *str; /* replacement symbol */
144: };
145:
146: #define PREDEF(__name, __str) \
147: { (__name), (__str) },
148:
1.138 schwarze 149: /* --- function prototypes ------------------------------------------------ */
150:
1.42 schwarze 151: static void roffnode_cleanscope(struct roff *);
152: static void roffnode_pop(struct roff *);
1.166 schwarze 153: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 154: const char *, int, int);
1.193 schwarze 155: static void roff_addtbl(struct roff_man *, struct tbl_node *);
1.183 schwarze 156: static enum rofferr roff_als(ROFF_ARGS);
1.2 schwarze 157: static enum rofferr roff_block(ROFF_ARGS);
158: static enum rofferr roff_block_text(ROFF_ARGS);
159: static enum rofferr roff_block_sub(ROFF_ARGS);
1.168 schwarze 160: static enum rofferr roff_br(ROFF_ARGS);
1.2 schwarze 161: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 162: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 163: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 164: static enum rofferr roff_cond(ROFF_ARGS);
165: static enum rofferr roff_cond_text(ROFF_ARGS);
166: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 167: static enum rofferr roff_ds(ROFF_ARGS);
1.175 schwarze 168: static enum rofferr roff_ec(ROFF_ARGS);
169: static enum rofferr roff_eo(ROFF_ARGS);
1.110 schwarze 170: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 171: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 172: static int roff_evalnum(struct roff *, int,
173: const char *, int *, int *, int);
174: static int roff_evalpar(struct roff *, int,
1.133 schwarze 175: const char *, int *, int *, int);
1.71 schwarze 176: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 177: static void roff_free1(struct roff *);
1.52 schwarze 178: static void roff_freereg(struct roffreg *);
1.42 schwarze 179: static void roff_freestr(struct roffkv *);
1.85 schwarze 180: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 181: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 182: static int roff_getop(const char *, int *, char *);
1.199 schwarze 183: static int roff_getregn(struct roff *,
184: const char *, size_t, char);
1.145 schwarze 185: static int roff_getregro(const struct roff *,
186: const char *name);
1.197 schwarze 187: static const char *roff_getstrn(struct roff *,
1.187 schwarze 188: const char *, size_t, int *);
1.143 schwarze 189: static int roff_hasregn(const struct roff *,
190: const char *, size_t);
1.123 schwarze 191: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 192: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 193: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 194: static void roff_man_alloc1(struct roff_man *);
195: static void roff_man_free1(struct roff_man *);
1.172 schwarze 196: static enum rofferr roff_manyarg(ROFF_ARGS);
1.202 schwarze 197: static enum rofferr roff_nop(ROFF_ARGS);
1.6 schwarze 198: static enum rofferr roff_nr(ROFF_ARGS);
1.169 schwarze 199: static enum rofferr roff_onearg(ROFF_ARGS);
1.166 schwarze 200: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 201: int, int);
1.177 schwarze 202: static enum rofferr roff_parsetext(struct roff *, struct buf *,
203: int, int *);
1.178 schwarze 204: static enum rofferr roff_renamed(ROFF_ARGS);
1.110 schwarze 205: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 206: static enum rofferr roff_rm(ROFF_ARGS);
1.178 schwarze 207: static enum rofferr roff_rn(ROFF_ARGS);
1.76 schwarze 208: static enum rofferr roff_rr(ROFF_ARGS);
1.198 schwarze 209: static void roff_setregn(struct roff *, const char *,
1.199 schwarze 210: size_t, int, char, int);
1.8 schwarze 211: static void roff_setstr(struct roff *,
1.16 schwarze 212: const char *, const char *, int);
1.80 schwarze 213: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 214: size_t, const char *, size_t, int);
1.14 schwarze 215: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 216: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 217: static enum rofferr roff_Dd(ROFF_ARGS);
1.27 schwarze 218: static enum rofferr roff_TE(ROFF_ARGS);
219: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 220: static enum rofferr roff_EQ(ROFF_ARGS);
221: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 222: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 223: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 224: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 225:
1.138 schwarze 226: /* --- constant data ------------------------------------------------------ */
227:
1.133 schwarze 228: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
229: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
230:
1.166 schwarze 231: const char *__roff_name[MAN_MAX + 1] = {
1.177 schwarze 232: "br", "ce", "ft", "ll",
1.184 schwarze 233: "mc", "po", "rj", "sp",
234: "ta", "ti", NULL,
1.166 schwarze 235: "ab", "ad", "af", "aln",
236: "als", "am", "am1", "ami",
237: "ami1", "as", "as1", "asciify",
238: "backtrace", "bd", "bleedat", "blm",
239: "box", "boxa", "bp", "BP",
240: "break", "breakchar", "brnl", "brp",
1.177 schwarze 241: "brpnl", "c2", "cc",
1.166 schwarze 242: "cf", "cflags", "ch", "char",
243: "chop", "class", "close", "CL",
244: "color", "composite", "continue", "cp",
245: "cropat", "cs", "cu", "da",
246: "dch", "Dd", "de", "de1",
247: "defcolor", "dei", "dei1", "device",
248: "devicem", "di", "do", "ds",
249: "ds1", "dwh", "dt", "ec",
250: "ecr", "ecs", "el", "em",
251: "EN", "eo", "EP", "EQ",
252: "errprint", "ev", "evc", "ex",
253: "fallback", "fam", "fc", "fchar",
254: "fcolor", "fdeferlig", "feature", "fkern",
255: "fl", "flig", "fp", "fps",
256: "fschar", "fspacewidth", "fspecial", "ftr",
257: "fzoom", "gcolor", "hc", "hcode",
258: "hidechar", "hla", "hlm", "hpf",
259: "hpfa", "hpfcode", "hw", "hy",
260: "hylang", "hylen", "hym", "hypp",
261: "hys", "ie", "if", "ig",
262: "index", "it", "itc", "IX",
263: "kern", "kernafter", "kernbefore", "kernpair",
264: "lc", "lc_ctype", "lds", "length",
265: "letadj", "lf", "lg", "lhang",
266: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 267: "ls", "lsm", "lt",
1.166 schwarze 268: "mediasize", "minss", "mk", "mso",
269: "na", "ne", "nh", "nhychar",
270: "nm", "nn", "nop", "nr",
271: "nrf", "nroff", "ns", "nx",
272: "open", "opena", "os", "output",
273: "padj", "papersize", "pc", "pev",
274: "pi", "PI", "pl", "pm",
1.184 schwarze 275: "pn", "pnr", "ps",
1.166 schwarze 276: "psbb", "pshape", "pso", "ptr",
277: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 278: "return", "rfschar", "rhang",
1.166 schwarze 279: "rm", "rn", "rnn", "rr",
280: "rs", "rt", "schar", "sentchar",
281: "shc", "shift", "sizes", "so",
282: "spacewidth", "special", "spreadwarn", "ss",
283: "sty", "substring", "sv", "sy",
1.172 schwarze 284: "T&", "tc", "TE",
1.173 schwarze 285: "TH", "tkf", "tl",
1.166 schwarze 286: "tm", "tm1", "tmc", "tr",
287: "track", "transchar", "trf", "trimat",
288: "trin", "trnt", "troff", "TS",
289: "uf", "ul", "unformat", "unwatch",
290: "unwatchn", "vpt", "vs", "warn",
291: "warnscale", "watch", "watchlength", "watchn",
292: "wh", "while", "write", "writec",
293: "writem", "xflag", ".", NULL,
1.178 schwarze 294: NULL, "text",
1.166 schwarze 295: "Dd", "Dt", "Os", "Sh",
296: "Ss", "Pp", "D1", "Dl",
297: "Bd", "Ed", "Bl", "El",
298: "It", "Ad", "An", "Ap",
299: "Ar", "Cd", "Cm", "Dv",
300: "Er", "Ev", "Ex", "Fa",
301: "Fd", "Fl", "Fn", "Ft",
302: "Ic", "In", "Li", "Nd",
303: "Nm", "Op", "Ot", "Pa",
304: "Rv", "St", "Va", "Vt",
305: "Xr", "%A", "%B", "%D",
306: "%I", "%J", "%N", "%O",
307: "%P", "%R", "%T", "%V",
308: "Ac", "Ao", "Aq", "At",
309: "Bc", "Bf", "Bo", "Bq",
310: "Bsx", "Bx", "Db", "Dc",
311: "Do", "Dq", "Ec", "Ef",
312: "Em", "Eo", "Fx", "Ms",
313: "No", "Ns", "Nx", "Ox",
314: "Pc", "Pf", "Po", "Pq",
315: "Qc", "Ql", "Qo", "Qq",
316: "Re", "Rs", "Sc", "So",
317: "Sq", "Sm", "Sx", "Sy",
318: "Tn", "Ux", "Xc", "Xo",
319: "Fo", "Fc", "Oo", "Oc",
320: "Bk", "Ek", "Bt", "Hf",
321: "Fr", "Ud", "Lb", "Lp",
322: "Lk", "Mt", "Brq", "Bro",
323: "Brc", "%C", "Es", "En",
1.171 schwarze 324: "Dx", "%Q", "%U", "Ta",
325: NULL,
1.166 schwarze 326: "TH", "SH", "SS", "TP",
1.204 schwarze 327: "TQ",
1.166 schwarze 328: "LP", "PP", "P", "IP",
329: "HP", "SM", "SB", "BI",
330: "IB", "BR", "RB", "R",
331: "B", "I", "IR", "RI",
1.171 schwarze 332: "nf", "fi",
1.166 schwarze 333: "RE", "RS", "DT", "UC",
1.169 schwarze 334: "PD", "AT", "in",
1.205 schwarze 335: "SY", "YS", "OP",
336: "EX", "EE", "UR",
1.189 bentley 337: "UE", "MT", "ME", NULL
1.166 schwarze 338: };
339: const char *const *roff_name = __roff_name;
340:
341: static struct roffmac roffs[TOKEN_NONE] = {
1.168 schwarze 342: { roff_br, NULL, NULL, 0 }, /* br */
1.177 schwarze 343: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.169 schwarze 344: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 345: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 346: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.184 schwarze 347: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 348: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 349: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 350: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 351: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 352: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 353: { roff_unsupp, NULL, NULL, 0 }, /* ab */
354: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
355: { roff_line_ignore, NULL, NULL, 0 }, /* af */
356: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 357: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 358: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
359: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
360: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
361: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
362: { roff_ds, NULL, NULL, 0 }, /* as */
363: { roff_ds, NULL, NULL, 0 }, /* as1 */
364: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
365: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
366: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
367: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
368: { roff_unsupp, NULL, NULL, 0 }, /* blm */
369: { roff_unsupp, NULL, NULL, 0 }, /* box */
370: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
371: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
372: { roff_unsupp, NULL, NULL, 0 }, /* BP */
373: { roff_unsupp, NULL, NULL, 0 }, /* break */
374: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
375: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 schwarze 376: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 377: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
378: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
379: { roff_cc, NULL, NULL, 0 }, /* cc */
380: { roff_insec, NULL, NULL, 0 }, /* cf */
381: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
382: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
383: { roff_unsupp, NULL, NULL, 0 }, /* char */
384: { roff_unsupp, NULL, NULL, 0 }, /* chop */
385: { roff_line_ignore, NULL, NULL, 0 }, /* class */
386: { roff_insec, NULL, NULL, 0 }, /* close */
387: { roff_unsupp, NULL, NULL, 0 }, /* CL */
388: { roff_line_ignore, NULL, NULL, 0 }, /* color */
389: { roff_unsupp, NULL, NULL, 0 }, /* composite */
390: { roff_unsupp, NULL, NULL, 0 }, /* continue */
391: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
392: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
393: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
394: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
395: { roff_unsupp, NULL, NULL, 0 }, /* da */
396: { roff_unsupp, NULL, NULL, 0 }, /* dch */
397: { roff_Dd, NULL, NULL, 0 }, /* Dd */
398: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
399: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
400: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
401: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
402: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
403: { roff_unsupp, NULL, NULL, 0 }, /* device */
404: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
405: { roff_unsupp, NULL, NULL, 0 }, /* di */
406: { roff_unsupp, NULL, NULL, 0 }, /* do */
407: { roff_ds, NULL, NULL, 0 }, /* ds */
408: { roff_ds, NULL, NULL, 0 }, /* ds1 */
409: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
410: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 411: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 412: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
413: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
414: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
415: { roff_unsupp, NULL, NULL, 0 }, /* em */
416: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 417: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 418: { roff_unsupp, NULL, NULL, 0 }, /* EP */
419: { roff_EQ, NULL, NULL, 0 }, /* EQ */
420: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
421: { roff_unsupp, NULL, NULL, 0 }, /* ev */
422: { roff_unsupp, NULL, NULL, 0 }, /* evc */
423: { roff_unsupp, NULL, NULL, 0 }, /* ex */
424: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
425: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
426: { roff_unsupp, NULL, NULL, 0 }, /* fc */
427: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
428: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
429: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
430: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
431: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
432: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
433: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
434: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
435: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
436: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
437: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
438: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
439: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
440: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
441: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
442: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
443: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
444: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
445: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
446: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
447: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
448: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
449: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
450: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
451: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
452: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
453: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
454: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
455: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
456: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
457: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
458: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
459: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
460: { roff_unsupp, NULL, NULL, 0 }, /* index */
461: { roff_it, NULL, NULL, 0 }, /* it */
462: { roff_unsupp, NULL, NULL, 0 }, /* itc */
463: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
464: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
465: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
466: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
467: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
468: { roff_unsupp, NULL, NULL, 0 }, /* lc */
469: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
470: { roff_unsupp, NULL, NULL, 0 }, /* lds */
471: { roff_unsupp, NULL, NULL, 0 }, /* length */
472: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
473: { roff_insec, NULL, NULL, 0 }, /* lf */
474: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
475: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
476: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
477: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
478: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
479: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
480: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
481: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
482: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
483: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
484: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
485: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
486: { roff_insec, NULL, NULL, 0 }, /* mso */
487: { roff_line_ignore, NULL, NULL, 0 }, /* na */
488: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
489: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
490: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
491: { roff_unsupp, NULL, NULL, 0 }, /* nm */
492: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.202 schwarze 493: { roff_nop, NULL, NULL, 0 }, /* nop */
1.167 schwarze 494: { roff_nr, NULL, NULL, 0 }, /* nr */
495: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
496: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
497: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
498: { roff_insec, NULL, NULL, 0 }, /* nx */
499: { roff_insec, NULL, NULL, 0 }, /* open */
500: { roff_insec, NULL, NULL, 0 }, /* opena */
501: { roff_line_ignore, NULL, NULL, 0 }, /* os */
502: { roff_unsupp, NULL, NULL, 0 }, /* output */
503: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
504: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
505: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
506: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
507: { roff_insec, NULL, NULL, 0 }, /* pi */
508: { roff_unsupp, NULL, NULL, 0 }, /* PI */
509: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
510: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
511: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
512: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
513: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
514: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
515: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
516: { roff_insec, NULL, NULL, 0 }, /* pso */
517: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
518: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
519: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
520: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
521: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
522: { roff_unsupp, NULL, NULL, 0 }, /* return */
523: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
524: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
525: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 526: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 527: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
528: { roff_rr, NULL, NULL, 0 }, /* rr */
529: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
530: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
531: { roff_unsupp, NULL, NULL, 0 }, /* schar */
532: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
533: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
534: { roff_unsupp, NULL, NULL, 0 }, /* shift */
535: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
536: { roff_so, NULL, NULL, 0 }, /* so */
537: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
538: { roff_line_ignore, NULL, NULL, 0 }, /* special */
539: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
540: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
541: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
542: { roff_unsupp, NULL, NULL, 0 }, /* substring */
543: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
544: { roff_insec, NULL, NULL, 0 }, /* sy */
545: { roff_T_, NULL, NULL, 0 }, /* T& */
546: { roff_unsupp, NULL, NULL, 0 }, /* tc */
547: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 548: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 549: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
550: { roff_unsupp, NULL, NULL, 0 }, /* tl */
551: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
552: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
553: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
554: { roff_tr, NULL, NULL, 0 }, /* tr */
555: { roff_line_ignore, NULL, NULL, 0 }, /* track */
556: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
557: { roff_insec, NULL, NULL, 0 }, /* trf */
558: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
559: { roff_unsupp, NULL, NULL, 0 }, /* trin */
560: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
561: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
562: { roff_TS, NULL, NULL, 0 }, /* TS */
563: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
564: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
565: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
566: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
567: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
568: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
569: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
570: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
571: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
572: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
573: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
574: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
575: { roff_unsupp, NULL, NULL, 0 }, /* wh */
576: { roff_unsupp, NULL, NULL, 0 }, /* while */
577: { roff_insec, NULL, NULL, 0 }, /* write */
578: { roff_insec, NULL, NULL, 0 }, /* writec */
579: { roff_insec, NULL, NULL, 0 }, /* writem */
580: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
581: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 582: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 583: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 584: };
585:
1.37 schwarze 586: /* Array of injected predefined strings. */
587: #define PREDEFS_MAX 38
588: static const struct predef predefs[PREDEFS_MAX] = {
589: #include "predefs.in"
590: };
591:
1.177 schwarze 592: static int roffce_lines; /* number of input lines to center */
593: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 594: static int roffit_lines; /* number of lines to delay */
595: static char *roffit_macro; /* nil-terminated macro line */
596:
1.80 schwarze 597:
1.138 schwarze 598: /* --- request table ------------------------------------------------------ */
599:
1.167 schwarze 600: struct ohash *
601: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 602: {
1.167 schwarze 603: struct ohash *htab;
604: struct roffreq *req;
605: enum roff_tok tok;
606: size_t sz;
607: unsigned int slot;
1.3 schwarze 608:
1.167 schwarze 609: htab = mandoc_malloc(sizeof(*htab));
610: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 611:
1.167 schwarze 612: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 613: if (roff_name[tok] == NULL)
614: continue;
1.167 schwarze 615: sz = strlen(roff_name[tok]);
616: req = mandoc_malloc(sizeof(*req) + sz + 1);
617: req->tok = tok;
618: memcpy(req->name, roff_name[tok], sz + 1);
619: slot = ohash_qlookup(htab, req->name);
620: ohash_insert(htab, slot, req);
1.3 schwarze 621: }
1.167 schwarze 622: return htab;
1.3 schwarze 623: }
624:
1.167 schwarze 625: void
626: roffhash_free(struct ohash *htab)
1.1 schwarze 627: {
1.167 schwarze 628: struct roffreq *req;
629: unsigned int slot;
1.1 schwarze 630:
1.167 schwarze 631: if (htab == NULL)
632: return;
633: for (req = ohash_first(htab, &slot); req != NULL;
634: req = ohash_next(htab, &slot))
635: free(req);
636: ohash_delete(htab);
637: free(htab);
638: }
639:
640: enum roff_tok
641: roffhash_find(struct ohash *htab, const char *name, size_t sz)
642: {
643: struct roffreq *req;
644: const char *end;
645:
646: if (sz) {
647: end = name + sz;
648: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
649: } else
650: req = ohash_find(htab, ohash_qlookup(htab, name));
651: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 652: }
653:
1.138 schwarze 654: /* --- stack of request blocks -------------------------------------------- */
655:
1.1 schwarze 656: /*
657: * Pop the current node off of the stack of roff instructions currently
658: * pending.
659: */
660: static void
661: roffnode_pop(struct roff *r)
662: {
663: struct roffnode *p;
664:
1.2 schwarze 665: assert(r->last);
1.80 schwarze 666: p = r->last;
1.2 schwarze 667:
668: r->last = r->last->parent;
1.16 schwarze 669: free(p->name);
670: free(p->end);
1.1 schwarze 671: free(p);
672: }
673:
674: /*
675: * Push a roff node onto the instruction stack. This must later be
676: * removed with roffnode_pop().
677: */
1.11 schwarze 678: static void
1.166 schwarze 679: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 680: int line, int col)
1.1 schwarze 681: {
682: struct roffnode *p;
683:
1.11 schwarze 684: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 685: p->tok = tok;
1.16 schwarze 686: if (name)
687: p->name = mandoc_strdup(name);
1.1 schwarze 688: p->parent = r->last;
689: p->line = line;
690: p->col = col;
1.71 schwarze 691: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 692:
693: r->last = p;
694: }
695:
1.138 schwarze 696: /* --- roff parser state data management ---------------------------------- */
697:
1.1 schwarze 698: static void
699: roff_free1(struct roff *r)
700: {
1.49 schwarze 701: struct tbl_node *tbl;
1.42 schwarze 702: int i;
1.27 schwarze 703:
1.49 schwarze 704: while (NULL != (tbl = r->first_tbl)) {
705: r->first_tbl = tbl->next;
706: tbl_free(tbl);
1.27 schwarze 707: }
708: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 709:
1.191 schwarze 710: if (r->last_eqn != NULL)
711: eqn_free(r->last_eqn);
712: r->last_eqn = r->eqn = NULL;
1.32 schwarze 713:
1.1 schwarze 714: while (r->last)
715: roffnode_pop(r);
1.27 schwarze 716:
1.96 schwarze 717: free (r->rstack);
718: r->rstack = NULL;
719: r->rstacksz = 0;
720: r->rstackpos = -1;
721:
722: roff_freereg(r->regtab);
723: r->regtab = NULL;
724:
1.42 schwarze 725: roff_freestr(r->strtab);
1.178 schwarze 726: roff_freestr(r->rentab);
1.42 schwarze 727: roff_freestr(r->xmbtab);
1.178 schwarze 728: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 729:
730: if (r->xtab)
731: for (i = 0; i < 128; i++)
732: free(r->xtab[i].p);
733: free(r->xtab);
734: r->xtab = NULL;
1.1 schwarze 735: }
736:
737: void
738: roff_reset(struct roff *r)
739: {
740: roff_free1(r);
1.99 schwarze 741: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 742: r->control = '\0';
743: r->escape = '\\';
1.179 schwarze 744: roffce_lines = 0;
745: roffce_node = NULL;
746: roffit_lines = 0;
747: roffit_macro = NULL;
1.1 schwarze 748: }
749:
750: void
751: roff_free(struct roff *r)
752: {
753: roff_free1(r);
1.167 schwarze 754: roffhash_free(r->reqtab);
1.1 schwarze 755: free(r);
756: }
757:
758: struct roff *
1.151 schwarze 759: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 760: {
761: struct roff *r;
762:
1.11 schwarze 763: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 764: r->parse = parse;
1.200 schwarze 765: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.72 schwarze 766: r->options = options;
1.99 schwarze 767: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 768: r->rstackpos = -1;
1.175 schwarze 769: r->escape = '\\';
1.149 schwarze 770: return r;
1.137 schwarze 771: }
772:
1.138 schwarze 773: /* --- syntax tree state data management ---------------------------------- */
774:
1.137 schwarze 775: static void
776: roff_man_free1(struct roff_man *man)
777: {
778:
1.138 schwarze 779: if (man->first != NULL)
780: roff_node_delete(man, man->first);
1.137 schwarze 781: free(man->meta.msec);
782: free(man->meta.vol);
783: free(man->meta.os);
784: free(man->meta.arch);
785: free(man->meta.title);
786: free(man->meta.name);
787: free(man->meta.date);
788: }
789:
790: static void
791: roff_man_alloc1(struct roff_man *man)
792: {
793:
794: memset(&man->meta, 0, sizeof(man->meta));
795: man->first = mandoc_calloc(1, sizeof(*man->first));
796: man->first->type = ROFFT_ROOT;
797: man->last = man->first;
798: man->last_es = NULL;
799: man->flags = 0;
800: man->macroset = MACROSET_NONE;
801: man->lastsec = man->lastnamed = SEC_NONE;
802: man->next = ROFF_NEXT_CHILD;
803: }
804:
805: void
806: roff_man_reset(struct roff_man *man)
807: {
808:
809: roff_man_free1(man);
810: roff_man_alloc1(man);
811: }
812:
813: void
814: roff_man_free(struct roff_man *man)
815: {
816:
817: roff_man_free1(man);
818: free(man);
819: }
820:
821: struct roff_man *
822: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.188 schwarze 823: const char *os_s, int quick)
1.137 schwarze 824: {
825: struct roff_man *man;
826:
827: man = mandoc_calloc(1, sizeof(*man));
828: man->parse = parse;
829: man->roff = roff;
1.188 schwarze 830: man->os_s = os_s;
1.137 schwarze 831: man->quick = quick;
832: roff_man_alloc1(man);
1.168 schwarze 833: roff->man = man;
1.149 schwarze 834: return man;
1.1 schwarze 835: }
836:
1.138 schwarze 837: /* --- syntax tree handling ----------------------------------------------- */
838:
839: struct roff_node *
840: roff_node_alloc(struct roff_man *man, int line, int pos,
841: enum roff_type type, int tok)
842: {
843: struct roff_node *n;
844:
845: n = mandoc_calloc(1, sizeof(*n));
846: n->line = line;
847: n->pos = pos;
848: n->tok = tok;
849: n->type = type;
850: n->sec = man->lastsec;
851:
852: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 853: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 854: else
1.157 schwarze 855: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 856: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 857: n->flags |= NODE_LINE;
1.138 schwarze 858: man->flags &= ~MDOC_NEWLINE;
859:
1.149 schwarze 860: return n;
1.138 schwarze 861: }
862:
863: void
864: roff_node_append(struct roff_man *man, struct roff_node *n)
865: {
866:
867: switch (man->next) {
868: case ROFF_NEXT_SIBLING:
1.153 schwarze 869: if (man->last->next != NULL) {
870: n->next = man->last->next;
871: man->last->next->prev = n;
872: } else
873: man->last->parent->last = n;
1.138 schwarze 874: man->last->next = n;
875: n->prev = man->last;
876: n->parent = man->last->parent;
877: break;
878: case ROFF_NEXT_CHILD:
1.159 schwarze 879: if (man->last->child != NULL) {
880: n->next = man->last->child;
881: man->last->child->prev = n;
882: } else
883: man->last->last = n;
1.138 schwarze 884: man->last->child = n;
885: n->parent = man->last;
886: break;
887: default:
888: abort();
889: }
1.154 schwarze 890: man->last = n;
1.138 schwarze 891:
892: switch (n->type) {
893: case ROFFT_HEAD:
894: n->parent->head = n;
895: break;
896: case ROFFT_BODY:
1.154 schwarze 897: if (n->end != ENDBODY_NOT)
898: return;
1.138 schwarze 899: n->parent->body = n;
900: break;
901: case ROFFT_TAIL:
902: n->parent->tail = n;
903: break;
904: default:
1.154 schwarze 905: return;
1.138 schwarze 906: }
1.154 schwarze 907:
908: /*
909: * Copy over the normalised-data pointer of our parent. Not
910: * everybody has one, but copying a null pointer is fine.
911: */
912:
913: n->norm = n->parent->norm;
914: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 915: }
916:
1.139 schwarze 917: void
918: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
919: {
920: struct roff_node *n;
921:
922: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
923: n->string = roff_strdup(man->roff, word);
924: roff_node_append(man, n);
1.158 schwarze 925: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 926: man->next = ROFF_NEXT_SIBLING;
927: }
928:
929: void
930: roff_word_append(struct roff_man *man, const char *word)
931: {
932: struct roff_node *n;
933: char *addstr, *newstr;
934:
935: n = man->last;
936: addstr = roff_strdup(man->roff, word);
937: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
938: free(addstr);
939: free(n->string);
940: n->string = newstr;
941: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 942: }
943:
944: void
945: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
946: {
947: struct roff_node *n;
948:
949: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
950: roff_node_append(man, n);
951: man->next = ROFF_NEXT_CHILD;
952: }
953:
954: struct roff_node *
955: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
956: {
957: struct roff_node *n;
958:
959: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
960: roff_node_append(man, n);
961: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 962: return n;
1.139 schwarze 963: }
964:
1.138 schwarze 965: struct roff_node *
966: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
967: {
968: struct roff_node *n;
969:
970: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
971: roff_node_append(man, n);
972: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 973: return n;
1.138 schwarze 974: }
975:
976: struct roff_node *
977: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
978: {
979: struct roff_node *n;
980:
981: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
982: roff_node_append(man, n);
983: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 984: return n;
1.139 schwarze 985: }
986:
1.193 schwarze 987: static void
988: roff_addtbl(struct roff_man *man, struct tbl_node *tbl)
1.139 schwarze 989: {
990: struct roff_node *n;
1.193 schwarze 991: const struct tbl_span *span;
1.139 schwarze 992:
993: if (man->macroset == MACROSET_MAN)
1.174 schwarze 994: man_breakscope(man, ROFF_TS);
1.193 schwarze 995: while ((span = tbl_span(tbl)) != NULL) {
996: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
997: n->span = span;
998: roff_node_append(man, n);
999: n->flags |= NODE_VALID | NODE_ENDED;
1000: man->next = ROFF_NEXT_SIBLING;
1001: }
1.138 schwarze 1002: }
1003:
1004: void
1005: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1006: {
1007:
1008: /* Adjust siblings. */
1009:
1010: if (n->prev)
1011: n->prev->next = n->next;
1012: if (n->next)
1013: n->next->prev = n->prev;
1014:
1015: /* Adjust parent. */
1016:
1017: if (n->parent != NULL) {
1018: if (n->parent->child == n)
1019: n->parent->child = n->next;
1020: if (n->parent->last == n)
1021: n->parent->last = n->prev;
1022: }
1023:
1024: /* Adjust parse point. */
1025:
1026: if (man == NULL)
1027: return;
1028: if (man->last == n) {
1029: if (n->prev == NULL) {
1030: man->last = n->parent;
1031: man->next = ROFF_NEXT_CHILD;
1032: } else {
1033: man->last = n->prev;
1034: man->next = ROFF_NEXT_SIBLING;
1035: }
1036: }
1037: if (man->first == n)
1038: man->first = NULL;
1039: }
1040:
1041: void
1042: roff_node_free(struct roff_node *n)
1043: {
1044:
1045: if (n->args != NULL)
1046: mdoc_argv_free(n->args);
1047: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1048: free(n->norm);
1.191 schwarze 1049: if (n->eqn != NULL)
1050: eqn_box_free(n->eqn);
1.138 schwarze 1051: free(n->string);
1052: free(n);
1053: }
1054:
1055: void
1056: roff_node_delete(struct roff_man *man, struct roff_node *n)
1057: {
1058:
1059: while (n->child != NULL)
1060: roff_node_delete(man, n->child);
1061: roff_node_unlink(man, n);
1062: roff_node_free(n);
1.141 schwarze 1063: }
1064:
1065: void
1066: deroff(char **dest, const struct roff_node *n)
1067: {
1068: char *cp;
1069: size_t sz;
1070:
1071: if (n->type != ROFFT_TEXT) {
1072: for (n = n->child; n != NULL; n = n->next)
1073: deroff(dest, n);
1074: return;
1075: }
1076:
1.160 schwarze 1077: /* Skip leading whitespace. */
1.141 schwarze 1078:
1.160 schwarze 1079: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1080: if (cp[0] == '\\' && cp[1] != '\0' &&
1081: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1082: cp++;
1.160 schwarze 1083: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1084: break;
1085: }
1086:
1.161 schwarze 1087: /* Skip trailing backslash. */
1088:
1089: sz = strlen(cp);
1.162 schwarze 1090: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1091: sz--;
1092:
1.141 schwarze 1093: /* Skip trailing whitespace. */
1094:
1.161 schwarze 1095: for (; sz; sz--)
1.141 schwarze 1096: if ( ! isspace((unsigned char)cp[sz-1]))
1097: break;
1098:
1099: /* Skip empty strings. */
1100:
1101: if (sz == 0)
1102: return;
1103:
1104: if (*dest == NULL) {
1105: *dest = mandoc_strndup(cp, sz);
1106: return;
1107: }
1108:
1109: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1110: free(*dest);
1111: *dest = cp;
1.138 schwarze 1112: }
1113:
1114: /* --- main functions of the roff parser ---------------------------------- */
1115:
1.8 schwarze 1116: /*
1.79 schwarze 1117: * In the current line, expand escape sequences that tend to get
1118: * used in numerical expressions and conditional requests.
1119: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1120: */
1.45 schwarze 1121: static enum rofferr
1.110 schwarze 1122: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1123: {
1.81 schwarze 1124: char ubuf[24]; /* buffer to print the number */
1.200 schwarze 1125: struct roff_node *n; /* used for header comments */
1.78 schwarze 1126: const char *start; /* start of the string to process */
1.82 schwarze 1127: char *stesc; /* start of an escape sequence ('\\') */
1.200 schwarze 1128: char *ep; /* end of comment string */
1.23 schwarze 1129: const char *stnam; /* start of the name, after "[(*" */
1130: const char *cp; /* end of the name, e.g. before ']' */
1131: const char *res; /* the string to be substituted */
1.110 schwarze 1132: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1133: size_t maxl; /* expected length of the escape name */
1134: size_t naml; /* actual length of the escape name */
1.109 schwarze 1135: enum mandoc_esc esc; /* type of the escape sequence */
1136: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1137: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1138: int npos; /* position in numeric expression */
1.91 schwarze 1139: int arg_complete; /* argument not interrupted by eol */
1.175 schwarze 1140: int done; /* no more input available */
1.187 schwarze 1141: int deftype; /* type of definition to paste */
1.195 schwarze 1142: int rcsid; /* kind of RCS id seen */
1.199 schwarze 1143: char sign; /* increment number register */
1.79 schwarze 1144: char term; /* character terminating the escape */
1.8 schwarze 1145:
1.175 schwarze 1146: /* Search forward for comments. */
1147:
1148: done = 0;
1149: start = buf->buf + pos;
1150: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1151: if (stesc[0] != r->escape || stesc[1] == '\0')
1152: continue;
1153: stesc++;
1154: if (*stesc != '"' && *stesc != '#')
1155: continue;
1.185 schwarze 1156:
1157: /* Comment found, look for RCS id. */
1158:
1.195 schwarze 1159: rcsid = 0;
1.185 schwarze 1160: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.195 schwarze 1161: rcsid = 1 << MANDOC_OS_OPENBSD;
1.185 schwarze 1162: cp += 8;
1163: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.195 schwarze 1164: rcsid = 1 << MANDOC_OS_NETBSD;
1.185 schwarze 1165: cp += 7;
1166: }
1167: if (cp != NULL &&
1168: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1169: strchr(cp, '$') != NULL) {
1.195 schwarze 1170: if (r->man->meta.rcsids & rcsid)
1.186 schwarze 1171: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1172: ln, stesc + 1 - buf->buf, stesc + 1);
1.195 schwarze 1173: r->man->meta.rcsids |= rcsid;
1.186 schwarze 1174: }
1.185 schwarze 1175:
1176: /* Handle trailing whitespace. */
1177:
1.200 schwarze 1178: ep = strchr(stesc--, '\0') - 1;
1179: if (*ep == '\n') {
1.175 schwarze 1180: done = 1;
1.200 schwarze 1181: ep--;
1.175 schwarze 1182: }
1.200 schwarze 1183: if (*ep == ' ' || *ep == '\t')
1.175 schwarze 1184: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1.200 schwarze 1185: ln, ep - buf->buf, NULL);
1186:
1187: /*
1188: * Save comments preceding the title macro
1189: * in the syntax tree.
1190: */
1191:
1192: if (r->format == 0) {
1193: while (*ep == ' ' || *ep == '\t')
1194: ep--;
1195: ep[1] = '\0';
1196: n = roff_node_alloc(r->man,
1197: ln, stesc + 1 - buf->buf,
1198: ROFFT_COMMENT, TOKEN_NONE);
1199: n->string = mandoc_strdup(stesc + 2);
1200: roff_node_append(r->man, n);
1201: n->flags |= NODE_VALID | NODE_ENDED;
1202: r->man->next = ROFF_NEXT_SIBLING;
1203: }
1204:
1.206 schwarze 1205: /* Line continuation with comment. */
1206:
1207: if (stesc[1] == '#') {
1208: *stesc = '\0';
1209: return ROFF_APPEND;
1210: }
1211:
1212: /* Discard normal comments. */
1.200 schwarze 1213:
1.207 schwarze 1214: while (stesc > start && stesc[-1] == ' ' &&
1215: (stesc == start + 1 || stesc[-2] != '\\'))
1.175 schwarze 1216: stesc--;
1217: *stesc = '\0';
1218: break;
1219: }
1220: if (stesc == start)
1221: return ROFF_CONT;
1222: stesc--;
1223:
1224: /* Notice the end of the input. */
1225:
1226: if (*stesc == '\n') {
1227: *stesc-- = '\0';
1228: done = 1;
1229: }
1230:
1.43 schwarze 1231: expand_count = 0;
1.175 schwarze 1232: while (stesc >= start) {
1.43 schwarze 1233:
1.78 schwarze 1234: /* Search backwards for the next backslash. */
1235:
1.175 schwarze 1236: if (*stesc != r->escape) {
1237: if (*stesc == '\\') {
1238: *stesc = '\0';
1239: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1240: buf->buf, stesc + 1) + 1;
1241: start = nbuf + pos;
1242: stesc = nbuf + (stesc - buf->buf);
1243: free(buf->buf);
1244: buf->buf = nbuf;
1245: }
1246: stesc--;
1.78 schwarze 1247: continue;
1.175 schwarze 1248: }
1.78 schwarze 1249:
1250: /* If it is escaped, skip it. */
1251:
1252: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1253: if (*cp != r->escape)
1.78 schwarze 1254: break;
1255:
1.110 schwarze 1256: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1257: while (stesc > cp)
1258: *stesc-- = '\\';
1.78 schwarze 1259: continue;
1.175 schwarze 1260: } else if (stesc[1] != '\0') {
1261: *stesc = '\\';
1262: } else {
1263: *stesc-- = '\0';
1264: if (done)
1265: continue;
1266: else
1267: return ROFF_APPEND;
1.78 schwarze 1268: }
1.23 schwarze 1269:
1.79 schwarze 1270: /* Decide whether to expand or to check only. */
1.23 schwarze 1271:
1.79 schwarze 1272: term = '\0';
1.78 schwarze 1273: cp = stesc + 1;
1.53 schwarze 1274: switch (*cp) {
1.80 schwarze 1275: case '*':
1.53 schwarze 1276: res = NULL;
1277: break;
1.80 schwarze 1278: case 'B':
1279: case 'w':
1.79 schwarze 1280: term = cp[1];
1281: /* FALLTHROUGH */
1.80 schwarze 1282: case 'n':
1.199 schwarze 1283: sign = cp[1];
1284: if (sign == '+' || sign == '-')
1285: cp++;
1.53 schwarze 1286: res = ubuf;
1287: break;
1288: default:
1.109 schwarze 1289: esc = mandoc_escape(&cp, &stnam, &inaml);
1290: if (esc == ESCAPE_ERROR ||
1291: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1292: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1293: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1294: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1295: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1296: stesc--;
1.78 schwarze 1297: continue;
1.42 schwarze 1298: }
1299:
1.78 schwarze 1300: if (EXPAND_LIMIT < ++expand_count) {
1301: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1302: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1303: return ROFF_IGN;
1.78 schwarze 1304: }
1.23 schwarze 1305:
1306: /*
1307: * The third character decides the length
1.53 schwarze 1308: * of the name of the string or register.
1.23 schwarze 1309: * Save a pointer to the name.
1310: */
1311:
1.110 schwarze 1312: if (term == '\0') {
1.79 schwarze 1313: switch (*++cp) {
1.80 schwarze 1314: case '\0':
1.79 schwarze 1315: maxl = 0;
1316: break;
1.80 schwarze 1317: case '(':
1.79 schwarze 1318: cp++;
1319: maxl = 2;
1320: break;
1.80 schwarze 1321: case '[':
1.79 schwarze 1322: cp++;
1323: term = ']';
1324: maxl = 0;
1325: break;
1326: default:
1327: maxl = 1;
1328: break;
1329: }
1330: } else {
1331: cp += 2;
1.8 schwarze 1332: maxl = 0;
1333: }
1.23 schwarze 1334: stnam = cp;
1.8 schwarze 1335:
1.23 schwarze 1336: /* Advance to the end of the name. */
1.8 schwarze 1337:
1.125 schwarze 1338: naml = 0;
1.91 schwarze 1339: arg_complete = 1;
1.125 schwarze 1340: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1341: if (*cp == '\0') {
1.92 schwarze 1342: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1343: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1344: arg_complete = 0;
1.79 schwarze 1345: break;
1.42 schwarze 1346: }
1.110 schwarze 1347: if (maxl == 0 && *cp == term) {
1.79 schwarze 1348: cp++;
1.125 schwarze 1349: break;
1350: }
1351: if (*cp++ != '\\' || stesc[1] != 'w') {
1352: naml++;
1353: continue;
1354: }
1355: switch (mandoc_escape(&cp, NULL, NULL)) {
1356: case ESCAPE_SPECIAL:
1357: case ESCAPE_UNICODE:
1358: case ESCAPE_NUMBERED:
1359: case ESCAPE_OVERSTRIKE:
1360: naml++;
1361: break;
1362: default:
1.8 schwarze 1363: break;
1.79 schwarze 1364: }
1.8 schwarze 1365: }
1366:
1.23 schwarze 1367: /*
1368: * Retrieve the replacement string; if it is
1369: * undefined, resume searching for escapes.
1370: */
1371:
1.79 schwarze 1372: switch (stesc[1]) {
1.80 schwarze 1373: case '*':
1.187 schwarze 1374: if (arg_complete) {
1375: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1376: res = roff_getstrn(r, stnam, naml, &deftype);
1.203 schwarze 1377:
1378: /*
1379: * If not overriden, let \*(.T
1380: * through to the formatters.
1381: */
1382:
1383: if (res == NULL && naml == 2 &&
1384: stnam[0] == '.' && stnam[1] == 'T') {
1385: roff_setstrn(&r->strtab,
1386: ".T", 2, NULL, 0, 0);
1387: stesc--;
1388: continue;
1389: }
1.187 schwarze 1390: }
1.79 schwarze 1391: break;
1.80 schwarze 1392: case 'B':
1.79 schwarze 1393: npos = 0;
1.91 schwarze 1394: ubuf[0] = arg_complete &&
1.133 schwarze 1395: roff_evalnum(r, ln, stnam, &npos,
1396: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1397: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1398: ubuf[1] = '\0';
1399: break;
1.80 schwarze 1400: case 'n':
1.91 schwarze 1401: if (arg_complete)
1402: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.199 schwarze 1403: roff_getregn(r, stnam, naml, sign));
1.91 schwarze 1404: else
1405: ubuf[0] = '\0';
1.79 schwarze 1406: break;
1.80 schwarze 1407: case 'w':
1.91 schwarze 1408: /* use even incomplete args */
1.81 schwarze 1409: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1410: 24 * (int)naml);
1411: break;
1412: }
1.8 schwarze 1413:
1.110 schwarze 1414: if (res == NULL) {
1.92 schwarze 1415: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1416: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1417: "%.*s", (int)naml, stnam);
1.37 schwarze 1418: res = "";
1.118 schwarze 1419: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1420: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1421: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1422: return ROFF_IGN;
1.8 schwarze 1423: }
1424:
1.23 schwarze 1425: /* Replace the escape sequence by the string. */
1426:
1.82 schwarze 1427: *stesc = '\0';
1.110 schwarze 1428: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1429: buf->buf, res, cp) + 1;
1.8 schwarze 1430:
1.78 schwarze 1431: /* Prepare for the next replacement. */
1.8 schwarze 1432:
1.78 schwarze 1433: start = nbuf + pos;
1.110 schwarze 1434: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1435: free(buf->buf);
1436: buf->buf = nbuf;
1.42 schwarze 1437: }
1.149 schwarze 1438: return ROFF_CONT;
1.42 schwarze 1439: }
1440:
1441: /*
1.147 schwarze 1442: * Process text streams.
1.42 schwarze 1443: */
1444: static enum rofferr
1.177 schwarze 1445: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1446: {
1447: size_t sz;
1448: const char *start;
1.51 schwarze 1449: char *p;
1450: int isz;
1.42 schwarze 1451: enum mandoc_esc esc;
1452:
1.147 schwarze 1453: /* Spring the input line trap. */
1454:
1455: if (roffit_lines == 1) {
1456: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1457: free(buf->buf);
1458: buf->buf = p;
1459: buf->sz = isz + 1;
1460: *offs = 0;
1461: free(roffit_macro);
1462: roffit_lines = 0;
1.149 schwarze 1463: return ROFF_REPARSE;
1.147 schwarze 1464: } else if (roffit_lines > 1)
1465: --roffit_lines;
1466:
1.177 schwarze 1467: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1468: if (roffce_lines < 1) {
1469: r->man->last = roffce_node;
1470: r->man->next = ROFF_NEXT_SIBLING;
1471: roffce_lines = 0;
1472: roffce_node = NULL;
1473: } else
1474: roffce_lines--;
1475: }
1476:
1.147 schwarze 1477: /* Convert all breakable hyphens into ASCII_HYPH. */
1478:
1.110 schwarze 1479: start = p = buf->buf + pos;
1.42 schwarze 1480:
1.110 schwarze 1481: while (*p != '\0') {
1.42 schwarze 1482: sz = strcspn(p, "-\\");
1483: p += sz;
1484:
1.110 schwarze 1485: if (*p == '\0')
1.42 schwarze 1486: break;
1487:
1.110 schwarze 1488: if (*p == '\\') {
1.42 schwarze 1489: /* Skip over escapes. */
1490: p++;
1.62 schwarze 1491: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1492: if (esc == ESCAPE_ERROR)
1.42 schwarze 1493: break;
1.136 schwarze 1494: while (*p == '-')
1495: p++;
1.42 schwarze 1496: continue;
1497: } else if (p == start) {
1498: p++;
1499: continue;
1500: }
1501:
1.44 schwarze 1502: if (isalpha((unsigned char)p[-1]) &&
1503: isalpha((unsigned char)p[1]))
1.42 schwarze 1504: *p = ASCII_HYPH;
1505: p++;
1.8 schwarze 1506: }
1.149 schwarze 1507: return ROFF_CONT;
1.8 schwarze 1508: }
1509:
1.1 schwarze 1510: enum rofferr
1.110 schwarze 1511: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1512: {
1.166 schwarze 1513: enum roff_tok t;
1.27 schwarze 1514: enum rofferr e;
1.110 schwarze 1515: int pos; /* parse point */
1.115 schwarze 1516: int spos; /* saved parse point for messages */
1.110 schwarze 1517: int ppos; /* original offset in buf->buf */
1518: int ctl; /* macro line (boolean) */
1519:
1520: ppos = pos = *offs;
1.1 schwarze 1521:
1.102 schwarze 1522: /* Handle in-line equation delimiters. */
1523:
1.108 schwarze 1524: if (r->tbl == NULL &&
1525: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1526: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1527: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1528: if (e == ROFF_REPARSE)
1.149 schwarze 1529: return e;
1.102 schwarze 1530: assert(e == ROFF_CONT);
1531: }
1532:
1533: /* Expand some escape sequences. */
1.8 schwarze 1534:
1.110 schwarze 1535: e = roff_res(r, buf, ln, pos);
1.175 schwarze 1536: if (e == ROFF_IGN || e == ROFF_APPEND)
1.149 schwarze 1537: return e;
1.110 schwarze 1538: assert(e == ROFF_CONT);
1.8 schwarze 1539:
1.110 schwarze 1540: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1541:
1.8 schwarze 1542: /*
1.2 schwarze 1543: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1544: * text through the macro's filter.
1545: * Equations process all content themselves.
1546: * Tables process almost all content themselves, but we want
1547: * to warn about macros before passing it there.
1.2 schwarze 1548: */
1549:
1.124 schwarze 1550: if (r->last != NULL && ! ctl) {
1.2 schwarze 1551: t = r->last->tok;
1.110 schwarze 1552: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.166 schwarze 1553: if (e == ROFF_IGN)
1.149 schwarze 1554: return e;
1.166 schwarze 1555: assert(e == ROFF_CONT);
1.54 schwarze 1556: }
1.191 schwarze 1557: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1558: eqn_read(r->eqn, buf->buf + ppos);
1559: return ROFF_IGN;
1560: }
1.193 schwarze 1561: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1562: tbl_read(r->tbl, ln, buf->buf, ppos);
1563: roff_addtbl(r->man, r->tbl);
1564: return ROFF_IGN;
1565: }
1.124 schwarze 1566: if ( ! ctl)
1.177 schwarze 1567: return roff_parsetext(r, buf, pos, offs);
1.100 schwarze 1568:
1569: /* Skip empty request lines. */
1570:
1.110 schwarze 1571: if (buf->buf[pos] == '"') {
1.100 schwarze 1572: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1573: ln, pos, NULL);
1.149 schwarze 1574: return ROFF_IGN;
1.110 schwarze 1575: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1576: return ROFF_IGN;
1.2 schwarze 1577:
1578: /*
1579: * If a scope is open, go to the child handler for that macro,
1580: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1581: * Don't do so if an equation is open.
1.2 schwarze 1582: */
1583:
1584: if (r->last) {
1.1 schwarze 1585: t = r->last->tok;
1.149 schwarze 1586: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1587: }
1588:
1.115 schwarze 1589: /* No scope is open. This is a new request or macro. */
1590:
1591: spos = pos;
1592: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1593:
1594: /* Tables ignore most macros. */
1595:
1.180 schwarze 1596: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1597: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.115 schwarze 1598: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1599: ln, pos, buf->buf + spos);
1.180 schwarze 1600: if (t != TOKEN_NONE)
1.149 schwarze 1601: return ROFF_IGN;
1.129 schwarze 1602: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1603: pos++;
1.163 schwarze 1604: while (buf->buf[pos] == ' ')
1.129 schwarze 1605: pos++;
1.193 schwarze 1606: tbl_read(r->tbl, ln, buf->buf, pos);
1607: roff_addtbl(r->man, r->tbl);
1608: return ROFF_IGN;
1.115 schwarze 1609: }
1610:
1.177 schwarze 1611: /* For now, let high level macros abort .ce mode. */
1612:
1613: if (ctl && roffce_node != NULL &&
1.196 schwarze 1614: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1615: t == ROFF_TH || t == ROFF_TS)) {
1.177 schwarze 1616: r->man->last = roffce_node;
1617: r->man->next = ROFF_NEXT_SIBLING;
1618: roffce_lines = 0;
1619: roffce_node = NULL;
1620: }
1621:
1.2 schwarze 1622: /*
1.115 schwarze 1623: * This is neither a roff request nor a user-defined macro.
1624: * Let the standard macro set parsers handle it.
1.2 schwarze 1625: */
1626:
1.166 schwarze 1627: if (t == TOKEN_NONE)
1.149 schwarze 1628: return ROFF_CONT;
1.115 schwarze 1629:
1630: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1631:
1.168 schwarze 1632: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1633: }
1634:
1.27 schwarze 1635: void
1.2 schwarze 1636: roff_endparse(struct roff *r)
1637: {
1.193 schwarze 1638: if (r->last != NULL)
1.94 schwarze 1639: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1640: r->last->line, r->last->col,
1.167 schwarze 1641: roff_name[r->last->tok]);
1.27 schwarze 1642:
1.193 schwarze 1643: if (r->eqn != NULL) {
1.94 schwarze 1644: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.191 schwarze 1645: r->eqn->node->line, r->eqn->node->pos, "EQ");
1646: eqn_parse(r->eqn);
1647: r->eqn = NULL;
1.32 schwarze 1648: }
1649:
1.193 schwarze 1650: if (r->tbl != NULL) {
1.94 schwarze 1651: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1652: r->tbl->line, r->tbl->pos, "TS");
1.193 schwarze 1653: tbl_end(r->tbl);
1654: r->tbl = NULL;
1.27 schwarze 1655: }
1.1 schwarze 1656: }
1657:
1658: /*
1659: * Parse a roff node's type from the input buffer. This must be in the
1660: * form of ".foo xxx" in the usual way.
1661: */
1.166 schwarze 1662: static enum roff_tok
1.87 schwarze 1663: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1664: {
1.87 schwarze 1665: char *cp;
1.16 schwarze 1666: const char *mac;
1667: size_t maclen;
1.187 schwarze 1668: int deftype;
1.166 schwarze 1669: enum roff_tok t;
1.1 schwarze 1670:
1.87 schwarze 1671: cp = buf + *pos;
1672:
1673: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1674: return TOKEN_NONE;
1.1 schwarze 1675:
1.87 schwarze 1676: mac = cp;
1677: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1678:
1.187 schwarze 1679: deftype = ROFFDEF_USER | ROFFDEF_REN;
1680: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1681: switch (deftype) {
1682: case ROFFDEF_USER:
1683: t = ROFF_USERDEF;
1684: break;
1685: case ROFFDEF_REN:
1686: t = ROFF_RENAMED;
1687: break;
1688: default:
1689: t = roffhash_find(r->reqtab, mac, maclen);
1690: break;
1691: }
1.166 schwarze 1692: if (t != TOKEN_NONE)
1.87 schwarze 1693: *pos = cp - buf;
1.197 schwarze 1694: else if (deftype == ROFFDEF_UNDEF) {
1695: /* Using an undefined macro defines it to be empty. */
1696: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1697: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1698: }
1.149 schwarze 1699: return t;
1.1 schwarze 1700: }
1701:
1.138 schwarze 1702: /* --- handling of request blocks ----------------------------------------- */
1703:
1.1 schwarze 1704: static enum rofferr
1.2 schwarze 1705: roff_cblock(ROFF_ARGS)
1.1 schwarze 1706: {
1707:
1.2 schwarze 1708: /*
1709: * A block-close `..' should only be invoked as a child of an
1710: * ignore macro, otherwise raise a warning and just ignore it.
1711: */
1712:
1.110 schwarze 1713: if (r->last == NULL) {
1.94 schwarze 1714: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1715: ln, ppos, "..");
1.149 schwarze 1716: return ROFF_IGN;
1.2 schwarze 1717: }
1.1 schwarze 1718:
1.2 schwarze 1719: switch (r->last->tok) {
1.80 schwarze 1720: case ROFF_am:
1.93 schwarze 1721: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1722: case ROFF_ami:
1723: case ROFF_de:
1.23 schwarze 1724: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1725: case ROFF_dei:
1726: case ROFF_ig:
1.2 schwarze 1727: break;
1728: default:
1.94 schwarze 1729: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1730: ln, ppos, "..");
1.149 schwarze 1731: return ROFF_IGN;
1.2 schwarze 1732: }
1733:
1.110 schwarze 1734: if (buf->buf[pos] != '\0')
1.90 schwarze 1735: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1736: ".. %s", buf->buf + pos);
1.2 schwarze 1737:
1738: roffnode_pop(r);
1739: roffnode_cleanscope(r);
1.149 schwarze 1740: return ROFF_IGN;
1.2 schwarze 1741:
1742: }
1.1 schwarze 1743:
1.2 schwarze 1744: static void
1745: roffnode_cleanscope(struct roff *r)
1746: {
1.1 schwarze 1747:
1.2 schwarze 1748: while (r->last) {
1.46 schwarze 1749: if (--r->last->endspan != 0)
1.2 schwarze 1750: break;
1751: roffnode_pop(r);
1752: }
1753: }
1.1 schwarze 1754:
1.68 schwarze 1755: static void
1756: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1757: {
1.1 schwarze 1758:
1.2 schwarze 1759: if (NULL == r->last) {
1.94 schwarze 1760: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1761: ln, ppos, "\\}");
1.68 schwarze 1762: return;
1.2 schwarze 1763: }
1.1 schwarze 1764:
1.2 schwarze 1765: switch (r->last->tok) {
1.80 schwarze 1766: case ROFF_el:
1767: case ROFF_ie:
1768: case ROFF_if:
1.2 schwarze 1769: break;
1770: default:
1.94 schwarze 1771: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1772: ln, ppos, "\\}");
1.68 schwarze 1773: return;
1.2 schwarze 1774: }
1.1 schwarze 1775:
1.2 schwarze 1776: if (r->last->endspan > -1) {
1.94 schwarze 1777: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1778: ln, ppos, "\\}");
1.68 schwarze 1779: return;
1.2 schwarze 1780: }
1781:
1782: roffnode_pop(r);
1783: roffnode_cleanscope(r);
1.68 schwarze 1784: return;
1.1 schwarze 1785: }
1786:
1787: static enum rofferr
1.2 schwarze 1788: roff_block(ROFF_ARGS)
1.1 schwarze 1789: {
1.187 schwarze 1790: const char *name, *value;
1791: char *call, *cp, *iname, *rname;
1792: size_t csz, namesz, rsz;
1793: int deftype;
1.16 schwarze 1794:
1.93 schwarze 1795: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1796:
1.110 schwarze 1797: if (tok == ROFF_de1)
1.93 schwarze 1798: tok = ROFF_de;
1.123 schwarze 1799: else if (tok == ROFF_dei1)
1800: tok = ROFF_dei;
1.110 schwarze 1801: else if (tok == ROFF_am1)
1.93 schwarze 1802: tok = ROFF_am;
1.123 schwarze 1803: else if (tok == ROFF_ami1)
1804: tok = ROFF_ami;
1.93 schwarze 1805:
1806: /* Parse the macro name argument. */
1807:
1.110 schwarze 1808: cp = buf->buf + pos;
1809: if (tok == ROFF_ig) {
1.93 schwarze 1810: iname = NULL;
1811: namesz = 0;
1812: } else {
1813: iname = cp;
1814: namesz = roff_getname(r, &cp, ln, ppos);
1815: iname[namesz] = '\0';
1816: }
1.22 schwarze 1817:
1.93 schwarze 1818: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1819:
1.110 schwarze 1820: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1821: deftype = ROFFDEF_USER;
1822: name = roff_getstrn(r, iname, namesz, &deftype);
1823: if (name == NULL) {
1.93 schwarze 1824: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1825: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1826: "%.*s", (int)namesz, iname);
1827: namesz = 0;
1828: } else
1829: namesz = strlen(name);
1830: } else
1831: name = iname;
1.22 schwarze 1832:
1.110 schwarze 1833: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1834: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1835: ln, ppos, roff_name[tok]);
1.149 schwarze 1836: return ROFF_IGN;
1.93 schwarze 1837: }
1.2 schwarze 1838:
1.16 schwarze 1839: roffnode_push(r, tok, name, ln, ppos);
1840:
1841: /*
1842: * At the beginning of a `de' macro, clear the existing string
1843: * with the same name, if there is one. New content will be
1.66 schwarze 1844: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1845: */
1.22 schwarze 1846:
1.183 schwarze 1847: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 1848: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 1849: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 1850: } else if (tok == ROFF_am || tok == ROFF_ami) {
1851: deftype = ROFFDEF_ANY;
1852: value = roff_getstrn(r, iname, namesz, &deftype);
1853: switch (deftype) { /* Before appending, ... */
1854: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1855: roff_setstrn(&r->strtab, name, namesz,
1856: value, strlen(value), 0);
1857: break;
1858: case ROFFDEF_REN: /* call original standard macro. */
1859: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1860: (int)strlen(value), value);
1861: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1862: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1863: free(call);
1864: break;
1865: case ROFFDEF_STD: /* rename and call standard macro. */
1866: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1867: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1868: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1869: (int)rsz, rname);
1870: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1871: free(call);
1872: free(rname);
1873: break;
1874: default:
1875: break;
1876: }
1.183 schwarze 1877: }
1.2 schwarze 1878:
1.110 schwarze 1879: if (*cp == '\0')
1.149 schwarze 1880: return ROFF_IGN;
1.1 schwarze 1881:
1.93 schwarze 1882: /* Get the custom end marker. */
1.22 schwarze 1883:
1.93 schwarze 1884: iname = cp;
1.86 schwarze 1885: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1886:
1887: /* Resolve the end marker if it is indirect. */
1888:
1.110 schwarze 1889: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1890: deftype = ROFFDEF_USER;
1891: name = roff_getstrn(r, iname, namesz, &deftype);
1892: if (name == NULL) {
1.93 schwarze 1893: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1894: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1895: "%.*s", (int)namesz, iname);
1896: namesz = 0;
1897: } else
1898: namesz = strlen(name);
1899: } else
1900: name = iname;
1901:
1.86 schwarze 1902: if (namesz)
1903: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1904:
1.110 schwarze 1905: if (*cp != '\0')
1.90 schwarze 1906: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 1907: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 1908:
1.149 schwarze 1909: return ROFF_IGN;
1.1 schwarze 1910: }
1911:
1912: static enum rofferr
1.2 schwarze 1913: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1914: {
1.166 schwarze 1915: enum roff_tok t;
1.2 schwarze 1916: int i, j;
1917:
1918: /*
1919: * First check whether a custom macro exists at this level. If
1920: * it does, then check against it. This is some of groff's
1921: * stranger behaviours. If we encountered a custom end-scope
1922: * tag and that tag also happens to be a "real" macro, then we
1923: * need to try interpreting it again as a real macro. If it's
1924: * not, then return ignore. Else continue.
1925: */
1926:
1927: if (r->last->end) {
1.35 schwarze 1928: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1929: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1930: break;
1.1 schwarze 1931:
1.110 schwarze 1932: if (r->last->end[j] == '\0' &&
1933: (buf->buf[i] == '\0' ||
1934: buf->buf[i] == ' ' ||
1935: buf->buf[i] == '\t')) {
1.2 schwarze 1936: roffnode_pop(r);
1937: roffnode_cleanscope(r);
1.1 schwarze 1938:
1.110 schwarze 1939: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1940: i++;
1941:
1942: pos = i;
1.110 schwarze 1943: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 1944: TOKEN_NONE)
1.149 schwarze 1945: return ROFF_RERUN;
1946: return ROFF_IGN;
1.2 schwarze 1947: }
1.1 schwarze 1948: }
1949:
1.2 schwarze 1950: /*
1951: * If we have no custom end-query or lookup failed, then try
1952: * pulling it out of the hashtable.
1953: */
1.1 schwarze 1954:
1.110 schwarze 1955: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1956:
1.110 schwarze 1957: if (t != ROFF_cblock) {
1958: if (tok != ROFF_ig)
1959: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1960: return ROFF_IGN;
1.16 schwarze 1961: }
1.1 schwarze 1962:
1.149 schwarze 1963: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1964: }
1965:
1966: static enum rofferr
1967: roff_block_text(ROFF_ARGS)
1968: {
1969:
1.110 schwarze 1970: if (tok != ROFF_ig)
1971: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1972:
1.149 schwarze 1973: return ROFF_IGN;
1.2 schwarze 1974: }
1975:
1976: static enum rofferr
1977: roff_cond_sub(ROFF_ARGS)
1978: {
1.166 schwarze 1979: enum roff_tok t;
1.37 schwarze 1980: char *ep;
1.71 schwarze 1981: int rr;
1.2 schwarze 1982:
1983: rr = r->last->rule;
1.37 schwarze 1984: roffnode_cleanscope(r);
1.39 schwarze 1985:
1.69 schwarze 1986: /*
1987: * If `\}' occurs on a macro line without a preceding macro,
1988: * drop the line completely.
1989: */
1990:
1.110 schwarze 1991: ep = buf->buf + pos;
1992: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1993: rr = 0;
1.69 schwarze 1994:
1.50 schwarze 1995: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1996:
1.110 schwarze 1997: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 1998: switch (ep[1]) {
1999: case '}':
2000: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2001: roff_ccond(r, ln, ep - buf->buf);
2002: break;
2003: case '\0':
2004: ++ep;
2005: break;
2006: default:
2007: ep += 2;
2008: break;
1.70 schwarze 2009: }
1.50 schwarze 2010: }
1.190 schwarze 2011:
2012: /*
2013: * Fully handle known macros when they are structurally
2014: * required or when the conditional evaluated to true.
2015: */
2016:
2017: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2018: return t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT)
2019: ? (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) : rr
2020: ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 2021: }
2022:
2023: static enum rofferr
2024: roff_cond_text(ROFF_ARGS)
2025: {
1.37 schwarze 2026: char *ep;
1.71 schwarze 2027: int rr;
1.2 schwarze 2028:
2029: rr = r->last->rule;
1.37 schwarze 2030: roffnode_cleanscope(r);
1.1 schwarze 2031:
1.110 schwarze 2032: ep = buf->buf + pos;
2033: while ((ep = strchr(ep, '\\')) != NULL) {
2034: if (*(++ep) == '}') {
1.70 schwarze 2035: *ep = '&';
1.110 schwarze 2036: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 2037: }
1.119 schwarze 2038: if (*ep != '\0')
2039: ++ep;
1.2 schwarze 2040: }
1.149 schwarze 2041: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 2042: }
2043:
1.138 schwarze 2044: /* --- handling of numeric and conditional expressions -------------------- */
2045:
1.77 schwarze 2046: /*
2047: * Parse a single signed integer number. Stop at the first non-digit.
2048: * If there is at least one digit, return success and advance the
2049: * parse point, else return failure and let the parse point unchanged.
2050: * Ignore overflows, treat them just like the C language.
2051: */
1.56 schwarze 2052: static int
1.133 schwarze 2053: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2054: {
1.133 schwarze 2055: int myres, scaled, n, p;
1.79 schwarze 2056:
2057: if (NULL == res)
2058: res = &myres;
1.56 schwarze 2059:
2060: p = *pos;
2061: n = v[p] == '-';
1.133 schwarze 2062: if (n || v[p] == '+')
1.56 schwarze 2063: p++;
2064:
1.133 schwarze 2065: if (flags & ROFFNUM_WHITE)
2066: while (isspace((unsigned char)v[p]))
2067: p++;
2068:
1.56 schwarze 2069: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2070: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2071: if (p == *pos + n)
2072: return 0;
2073:
2074: if (n)
2075: *res = -*res;
2076:
1.126 schwarze 2077: /* Each number may be followed by one optional scaling unit. */
2078:
2079: switch (v[p]) {
2080: case 'f':
1.133 schwarze 2081: scaled = *res * 65536;
1.126 schwarze 2082: break;
2083: case 'i':
1.133 schwarze 2084: scaled = *res * 240;
1.126 schwarze 2085: break;
2086: case 'c':
1.133 schwarze 2087: scaled = *res * 240 / 2.54;
1.126 schwarze 2088: break;
2089: case 'v':
2090: case 'P':
1.133 schwarze 2091: scaled = *res * 40;
1.126 schwarze 2092: break;
2093: case 'm':
2094: case 'n':
1.133 schwarze 2095: scaled = *res * 24;
1.126 schwarze 2096: break;
2097: case 'p':
1.133 schwarze 2098: scaled = *res * 10 / 3;
1.126 schwarze 2099: break;
2100: case 'u':
1.133 schwarze 2101: scaled = *res;
1.126 schwarze 2102: break;
2103: case 'M':
1.133 schwarze 2104: scaled = *res * 6 / 25;
1.126 schwarze 2105: break;
2106: default:
1.133 schwarze 2107: scaled = *res;
1.126 schwarze 2108: p--;
2109: break;
2110: }
1.133 schwarze 2111: if (flags & ROFFNUM_SCALE)
2112: *res = scaled;
1.126 schwarze 2113:
2114: *pos = p + 1;
1.149 schwarze 2115: return 1;
1.56 schwarze 2116: }
2117:
1.71 schwarze 2118: /*
2119: * Evaluate a string comparison condition.
2120: * The first character is the delimiter.
2121: * Succeed if the string up to its second occurrence
2122: * matches the string up to its third occurence.
2123: * Advance the cursor after the third occurrence
2124: * or lacking that, to the end of the line.
2125: */
2126: static int
2127: roff_evalstrcond(const char *v, int *pos)
2128: {
2129: const char *s1, *s2, *s3;
2130: int match;
2131:
2132: match = 0;
2133: s1 = v + *pos; /* initial delimiter */
2134: s2 = s1 + 1; /* for scanning the first string */
2135: s3 = strchr(s2, *s1); /* for scanning the second string */
2136:
2137: if (NULL == s3) /* found no middle delimiter */
2138: goto out;
2139:
2140: while ('\0' != *++s3) {
2141: if (*s2 != *s3) { /* mismatch */
2142: s3 = strchr(s3, *s1);
2143: break;
2144: }
2145: if (*s3 == *s1) { /* found the final delimiter */
2146: match = 1;
2147: break;
2148: }
2149: s2++;
2150: }
2151:
2152: out:
2153: if (NULL == s3)
2154: s3 = strchr(s2, '\0');
1.114 schwarze 2155: else if (*s3 != '\0')
1.71 schwarze 2156: s3++;
2157: *pos = s3 - v;
1.149 schwarze 2158: return match;
1.71 schwarze 2159: }
2160:
1.77 schwarze 2161: /*
2162: * Evaluate an optionally negated single character, numerical,
2163: * or string condition.
2164: */
1.71 schwarze 2165: static int
1.143 schwarze 2166: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2167: {
1.208 schwarze 2168: const char *start, *end;
2169: char *cp, *name;
2170: size_t sz;
2171: int deftype, len, number, savepos, istrue, wanttrue;
1.5 schwarze 2172:
1.71 schwarze 2173: if ('!' == v[*pos]) {
2174: wanttrue = 0;
2175: (*pos)++;
2176: } else
2177: wanttrue = 1;
2178:
1.5 schwarze 2179: switch (v[*pos]) {
1.112 schwarze 2180: case '\0':
1.149 schwarze 2181: return 0;
1.80 schwarze 2182: case 'n':
2183: case 'o':
1.5 schwarze 2184: (*pos)++;
1.149 schwarze 2185: return wanttrue;
1.80 schwarze 2186: case 'e':
2187: case 't':
1.111 schwarze 2188: case 'v':
1.5 schwarze 2189: (*pos)++;
1.149 schwarze 2190: return !wanttrue;
1.208 schwarze 2191: case 'c':
2192: do {
2193: (*pos)++;
2194: } while (v[*pos] == ' ');
2195:
2196: /*
2197: * Quirk for groff compatibility:
2198: * The horizontal tab is neither available nor unavailable.
2199: */
2200:
2201: if (v[*pos] == '\t') {
2202: (*pos)++;
2203: return 0;
2204: }
2205:
2206: /* Printable ASCII characters are available. */
2207:
2208: if (v[*pos] != '\\') {
2209: (*pos)++;
2210: return wanttrue;
2211: }
2212:
2213: end = v + ++*pos;
2214: switch (mandoc_escape(&end, &start, &len)) {
2215: case ESCAPE_SPECIAL:
2216: istrue = mchars_spec2cp(start, len) != -1;
2217: break;
2218: case ESCAPE_UNICODE:
2219: istrue = 1;
2220: break;
2221: case ESCAPE_NUMBERED:
2222: istrue = mchars_num2char(start, len) != -1;
2223: break;
2224: default:
2225: istrue = !wanttrue;
2226: break;
2227: }
2228: *pos = end - v;
2229: return istrue == wanttrue;
1.182 schwarze 2230: case 'd':
1.143 schwarze 2231: case 'r':
1.182 schwarze 2232: cp = v + *pos + 1;
2233: while (*cp == ' ')
2234: cp++;
2235: name = cp;
2236: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2237: if (sz == 0)
2238: istrue = 0;
2239: else if (v[*pos] == 'r')
2240: istrue = roff_hasregn(r, name, sz);
2241: else {
2242: deftype = ROFFDEF_ANY;
2243: roff_getstrn(r, name, sz, &deftype);
2244: istrue = !!deftype;
2245: }
1.143 schwarze 2246: *pos = cp - v;
1.182 schwarze 2247: return istrue == wanttrue;
1.5 schwarze 2248: default:
2249: break;
2250: }
2251:
1.113 schwarze 2252: savepos = *pos;
1.133 schwarze 2253: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2254: return (number > 0) == wanttrue;
1.113 schwarze 2255: else if (*pos == savepos)
1.149 schwarze 2256: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2257: else
1.149 schwarze 2258: return 0;
1.5 schwarze 2259: }
2260:
1.2 schwarze 2261: static enum rofferr
1.21 schwarze 2262: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2263: {
1.30 schwarze 2264:
1.149 schwarze 2265: return ROFF_IGN;
1.21 schwarze 2266: }
2267:
2268: static enum rofferr
1.123 schwarze 2269: roff_insec(ROFF_ARGS)
2270: {
2271:
2272: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2273: ln, ppos, roff_name[tok]);
1.149 schwarze 2274: return ROFF_IGN;
1.123 schwarze 2275: }
2276:
2277: static enum rofferr
2278: roff_unsupp(ROFF_ARGS)
2279: {
2280:
2281: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2282: ln, ppos, roff_name[tok]);
1.149 schwarze 2283: return ROFF_IGN;
1.123 schwarze 2284: }
2285:
2286: static enum rofferr
1.2 schwarze 2287: roff_cond(ROFF_ARGS)
2288: {
1.46 schwarze 2289:
2290: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2291:
1.80 schwarze 2292: /*
1.35 schwarze 2293: * An `.el' has no conditional body: it will consume the value
2294: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2295: * defaults to DENY.
1.35 schwarze 2296: *
2297: * If we're not an `el', however, then evaluate the conditional.
2298: */
1.1 schwarze 2299:
1.110 schwarze 2300: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2301: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2302: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2303:
1.35 schwarze 2304: /*
2305: * An if-else will put the NEGATION of the current evaluated
2306: * conditional into the stack of rules.
2307: */
2308:
1.110 schwarze 2309: if (tok == ROFF_ie) {
1.96 schwarze 2310: if (r->rstackpos + 1 == r->rstacksz) {
2311: r->rstacksz += 16;
2312: r->rstack = mandoc_reallocarray(r->rstack,
2313: r->rstacksz, sizeof(int));
1.35 schwarze 2314: }
1.71 schwarze 2315: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2316: }
1.5 schwarze 2317:
2318: /* If the parent has false as its rule, then so do we. */
2319:
1.71 schwarze 2320: if (r->last->parent && !r->last->parent->rule)
2321: r->last->rule = 0;
1.5 schwarze 2322:
2323: /*
1.46 schwarze 2324: * Determine scope.
2325: * If there is nothing on the line after the conditional,
2326: * not even whitespace, use next-line scope.
1.5 schwarze 2327: */
1.2 schwarze 2328:
1.110 schwarze 2329: if (buf->buf[pos] == '\0') {
1.46 schwarze 2330: r->last->endspan = 2;
2331: goto out;
2332: }
2333:
1.110 schwarze 2334: while (buf->buf[pos] == ' ')
1.46 schwarze 2335: pos++;
2336:
2337: /* An opening brace requests multiline scope. */
1.2 schwarze 2338:
1.110 schwarze 2339: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2340: r->last->endspan = -1;
2341: pos += 2;
1.144 schwarze 2342: while (buf->buf[pos] == ' ')
2343: pos++;
1.46 schwarze 2344: goto out;
1.80 schwarze 2345: }
1.2 schwarze 2346:
2347: /*
1.46 schwarze 2348: * Anything else following the conditional causes
2349: * single-line scope. Warn if the scope contains
2350: * nothing but trailing whitespace.
1.2 schwarze 2351: */
2352:
1.110 schwarze 2353: if (buf->buf[pos] == '\0')
1.89 schwarze 2354: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2355: ln, ppos, roff_name[tok]);
1.2 schwarze 2356:
1.46 schwarze 2357: r->last->endspan = 1;
1.1 schwarze 2358:
1.46 schwarze 2359: out:
1.2 schwarze 2360: *offs = pos;
1.149 schwarze 2361: return ROFF_RERUN;
1.1 schwarze 2362: }
2363:
1.2 schwarze 2364: static enum rofferr
1.7 schwarze 2365: roff_ds(ROFF_ARGS)
2366: {
1.85 schwarze 2367: char *string;
2368: const char *name;
2369: size_t namesz;
1.10 schwarze 2370:
1.123 schwarze 2371: /* Ignore groff compatibility mode for now. */
2372:
2373: if (tok == ROFF_ds1)
2374: tok = ROFF_ds;
2375: else if (tok == ROFF_as1)
2376: tok = ROFF_as;
2377:
1.10 schwarze 2378: /*
1.85 schwarze 2379: * The first word is the name of the string.
2380: * If it is empty or terminated by an escape sequence,
2381: * abort the `ds' request without defining anything.
1.10 schwarze 2382: */
1.7 schwarze 2383:
1.110 schwarze 2384: name = string = buf->buf + pos;
2385: if (*name == '\0')
1.149 schwarze 2386: return ROFF_IGN;
1.7 schwarze 2387:
1.85 schwarze 2388: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2389: if (name[namesz] == '\\')
1.149 schwarze 2390: return ROFF_IGN;
1.85 schwarze 2391:
2392: /* Read past the initial double-quote, if any. */
1.110 schwarze 2393: if (*string == '"')
1.7 schwarze 2394: string++;
2395:
1.10 schwarze 2396: /* The rest is the value. */
1.85 schwarze 2397: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2398: ROFF_as == tok);
1.183 schwarze 2399: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2400: return ROFF_IGN;
1.7 schwarze 2401: }
2402:
1.77 schwarze 2403: /*
2404: * Parse a single operator, one or two characters long.
2405: * If the operator is recognized, return success and advance the
2406: * parse point, else return failure and let the parse point unchanged.
2407: */
2408: static int
2409: roff_getop(const char *v, int *pos, char *res)
2410: {
2411:
2412: *res = v[*pos];
2413:
2414: switch (*res) {
1.80 schwarze 2415: case '+':
2416: case '-':
2417: case '*':
2418: case '/':
2419: case '%':
2420: case '&':
2421: case ':':
1.77 schwarze 2422: break;
2423: case '<':
2424: switch (v[*pos + 1]) {
1.80 schwarze 2425: case '=':
1.77 schwarze 2426: *res = 'l';
2427: (*pos)++;
2428: break;
1.80 schwarze 2429: case '>':
1.77 schwarze 2430: *res = '!';
2431: (*pos)++;
2432: break;
1.80 schwarze 2433: case '?':
1.77 schwarze 2434: *res = 'i';
2435: (*pos)++;
2436: break;
2437: default:
2438: break;
2439: }
2440: break;
2441: case '>':
2442: switch (v[*pos + 1]) {
1.80 schwarze 2443: case '=':
1.77 schwarze 2444: *res = 'g';
2445: (*pos)++;
2446: break;
1.80 schwarze 2447: case '?':
1.77 schwarze 2448: *res = 'a';
2449: (*pos)++;
2450: break;
2451: default:
2452: break;
2453: }
2454: break;
2455: case '=':
2456: if ('=' == v[*pos + 1])
2457: (*pos)++;
2458: break;
2459: default:
1.149 schwarze 2460: return 0;
1.77 schwarze 2461: }
2462: (*pos)++;
2463:
1.149 schwarze 2464: return *res;
1.77 schwarze 2465: }
2466:
2467: /*
2468: * Evaluate either a parenthesized numeric expression
2469: * or a single signed integer number.
2470: */
2471: static int
1.106 schwarze 2472: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2473: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2474: {
2475:
2476: if ('(' != v[*pos])
1.149 schwarze 2477: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2478:
2479: (*pos)++;
1.133 schwarze 2480: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2481: return 0;
1.77 schwarze 2482:
1.79 schwarze 2483: /*
2484: * Omission of the closing parenthesis
2485: * is an error in validation mode,
2486: * but ignored in evaluation mode.
2487: */
2488:
1.77 schwarze 2489: if (')' == v[*pos])
2490: (*pos)++;
1.79 schwarze 2491: else if (NULL == res)
1.149 schwarze 2492: return 0;
1.77 schwarze 2493:
1.149 schwarze 2494: return 1;
1.77 schwarze 2495: }
2496:
2497: /*
2498: * Evaluate a complete numeric expression.
2499: * Proceed left to right, there is no concept of precedence.
2500: */
2501: static int
1.106 schwarze 2502: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2503: int *pos, int *res, int flags)
1.77 schwarze 2504: {
2505: int mypos, operand2;
2506: char operator;
2507:
2508: if (NULL == pos) {
2509: mypos = 0;
2510: pos = &mypos;
2511: }
2512:
1.133 schwarze 2513: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2514: while (isspace((unsigned char)v[*pos]))
2515: (*pos)++;
2516:
1.133 schwarze 2517: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2518: return 0;
1.77 schwarze 2519:
2520: while (1) {
1.133 schwarze 2521: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2522: while (isspace((unsigned char)v[*pos]))
2523: (*pos)++;
2524:
2525: if ( ! roff_getop(v, pos, &operator))
2526: break;
2527:
1.133 schwarze 2528: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2529: while (isspace((unsigned char)v[*pos]))
2530: (*pos)++;
2531:
1.133 schwarze 2532: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2533: return 0;
1.77 schwarze 2534:
1.133 schwarze 2535: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2536: while (isspace((unsigned char)v[*pos]))
2537: (*pos)++;
1.79 schwarze 2538:
2539: if (NULL == res)
2540: continue;
1.77 schwarze 2541:
2542: switch (operator) {
1.80 schwarze 2543: case '+':
1.77 schwarze 2544: *res += operand2;
2545: break;
1.80 schwarze 2546: case '-':
1.77 schwarze 2547: *res -= operand2;
2548: break;
1.80 schwarze 2549: case '*':
1.77 schwarze 2550: *res *= operand2;
2551: break;
1.80 schwarze 2552: case '/':
1.116 schwarze 2553: if (operand2 == 0) {
1.106 schwarze 2554: mandoc_msg(MANDOCERR_DIVZERO,
2555: r->parse, ln, *pos, v);
2556: *res = 0;
2557: break;
2558: }
1.77 schwarze 2559: *res /= operand2;
2560: break;
1.80 schwarze 2561: case '%':
1.116 schwarze 2562: if (operand2 == 0) {
2563: mandoc_msg(MANDOCERR_DIVZERO,
2564: r->parse, ln, *pos, v);
2565: *res = 0;
2566: break;
2567: }
1.77 schwarze 2568: *res %= operand2;
2569: break;
1.80 schwarze 2570: case '<':
1.77 schwarze 2571: *res = *res < operand2;
2572: break;
1.80 schwarze 2573: case '>':
1.77 schwarze 2574: *res = *res > operand2;
2575: break;
1.80 schwarze 2576: case 'l':
1.77 schwarze 2577: *res = *res <= operand2;
2578: break;
1.80 schwarze 2579: case 'g':
1.77 schwarze 2580: *res = *res >= operand2;
2581: break;
1.80 schwarze 2582: case '=':
1.77 schwarze 2583: *res = *res == operand2;
2584: break;
1.80 schwarze 2585: case '!':
1.77 schwarze 2586: *res = *res != operand2;
2587: break;
1.80 schwarze 2588: case '&':
1.77 schwarze 2589: *res = *res && operand2;
2590: break;
1.80 schwarze 2591: case ':':
1.77 schwarze 2592: *res = *res || operand2;
2593: break;
1.80 schwarze 2594: case 'i':
1.77 schwarze 2595: if (operand2 < *res)
2596: *res = operand2;
2597: break;
1.80 schwarze 2598: case 'a':
1.77 schwarze 2599: if (operand2 > *res)
2600: *res = operand2;
2601: break;
2602: default:
2603: abort();
2604: }
2605: }
1.149 schwarze 2606: return 1;
1.77 schwarze 2607: }
2608:
1.138 schwarze 2609: /* --- register management ------------------------------------------------ */
2610:
1.52 schwarze 2611: void
1.60 schwarze 2612: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2613: {
1.199 schwarze 2614: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.198 schwarze 2615: }
2616:
2617: static void
2618: roff_setregn(struct roff *r, const char *name, size_t len,
1.199 schwarze 2619: int val, char sign, int step)
1.198 schwarze 2620: {
1.52 schwarze 2621: struct roffreg *reg;
2622:
2623: /* Search for an existing register with the same name. */
2624: reg = r->regtab;
2625:
1.198 schwarze 2626: while (reg != NULL && (reg->key.sz != len ||
2627: strncmp(reg->key.p, name, len) != 0))
1.52 schwarze 2628: reg = reg->next;
1.41 schwarze 2629:
1.52 schwarze 2630: if (NULL == reg) {
2631: /* Create a new register. */
2632: reg = mandoc_malloc(sizeof(struct roffreg));
1.198 schwarze 2633: reg->key.p = mandoc_strndup(name, len);
2634: reg->key.sz = len;
1.60 schwarze 2635: reg->val = 0;
1.199 schwarze 2636: reg->step = 0;
1.52 schwarze 2637: reg->next = r->regtab;
2638: r->regtab = reg;
2639: }
2640:
1.60 schwarze 2641: if ('+' == sign)
2642: reg->val += val;
2643: else if ('-' == sign)
2644: reg->val -= val;
2645: else
2646: reg->val = val;
1.199 schwarze 2647: if (step != INT_MIN)
2648: reg->step = step;
1.41 schwarze 2649: }
2650:
1.65 schwarze 2651: /*
2652: * Handle some predefined read-only number registers.
2653: * For now, return -1 if the requested register is not predefined;
2654: * in case a predefined read-only register having the value -1
2655: * were to turn up, another special value would have to be chosen.
2656: */
2657: static int
1.145 schwarze 2658: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2659: {
2660:
2661: switch (*name) {
1.145 schwarze 2662: case '$': /* Number of arguments of the last macro evaluated. */
1.209 schwarze 2663: return 0;
1.80 schwarze 2664: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2665: return 0;
1.80 schwarze 2666: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2667: return 1;
1.80 schwarze 2668: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2669: return 24;
1.80 schwarze 2670: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2671: return 0;
1.80 schwarze 2672: case 'T': /* Some output device is always defined. */
1.149 schwarze 2673: return 1;
1.80 schwarze 2674: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2675: return 40;
1.65 schwarze 2676: default:
1.149 schwarze 2677: return -1;
1.65 schwarze 2678: }
2679: }
2680:
1.53 schwarze 2681: int
1.198 schwarze 2682: roff_getreg(struct roff *r, const char *name)
1.41 schwarze 2683: {
1.199 schwarze 2684: return roff_getregn(r, name, strlen(name), '\0');
1.53 schwarze 2685: }
2686:
2687: static int
1.199 schwarze 2688: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.53 schwarze 2689: {
2690: struct roffreg *reg;
1.65 schwarze 2691: int val;
2692:
2693: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2694: val = roff_getregro(r, name + 1);
1.65 schwarze 2695: if (-1 != val)
1.149 schwarze 2696: return val;
1.65 schwarze 2697: }
1.53 schwarze 2698:
1.199 schwarze 2699: for (reg = r->regtab; reg; reg = reg->next) {
1.53 schwarze 2700: if (len == reg->key.sz &&
1.199 schwarze 2701: 0 == strncmp(name, reg->key.p, len)) {
2702: switch (sign) {
2703: case '+':
2704: reg->val += reg->step;
2705: break;
2706: case '-':
2707: reg->val -= reg->step;
2708: break;
2709: default:
2710: break;
2711: }
1.149 schwarze 2712: return reg->val;
1.199 schwarze 2713: }
2714: }
1.143 schwarze 2715:
1.199 schwarze 2716: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.149 schwarze 2717: return 0;
1.143 schwarze 2718: }
2719:
2720: static int
2721: roff_hasregn(const struct roff *r, const char *name, size_t len)
2722: {
2723: struct roffreg *reg;
2724: int val;
2725:
2726: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2727: val = roff_getregro(r, name + 1);
1.143 schwarze 2728: if (-1 != val)
1.149 schwarze 2729: return 1;
1.143 schwarze 2730: }
2731:
2732: for (reg = r->regtab; reg; reg = reg->next)
2733: if (len == reg->key.sz &&
2734: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2735: return 1;
1.41 schwarze 2736:
1.149 schwarze 2737: return 0;
1.41 schwarze 2738: }
2739:
1.52 schwarze 2740: static void
2741: roff_freereg(struct roffreg *reg)
1.41 schwarze 2742: {
1.52 schwarze 2743: struct roffreg *old_reg;
1.41 schwarze 2744:
1.52 schwarze 2745: while (NULL != reg) {
2746: free(reg->key.p);
2747: old_reg = reg;
2748: reg = reg->next;
2749: free(old_reg);
2750: }
1.41 schwarze 2751: }
1.7 schwarze 2752:
2753: static enum rofferr
1.6 schwarze 2754: roff_nr(ROFF_ARGS)
1.1 schwarze 2755: {
1.199 schwarze 2756: char *key, *val, *step;
1.85 schwarze 2757: size_t keysz;
1.199 schwarze 2758: int iv, is, len;
1.60 schwarze 2759: char sign;
1.6 schwarze 2760:
1.110 schwarze 2761: key = val = buf->buf + pos;
2762: if (*key == '\0')
1.149 schwarze 2763: return ROFF_IGN;
1.85 schwarze 2764:
2765: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2766: if (key[keysz] == '\\')
1.149 schwarze 2767: return ROFF_IGN;
1.6 schwarze 2768:
1.60 schwarze 2769: sign = *val;
1.110 schwarze 2770: if (sign == '+' || sign == '-')
1.60 schwarze 2771: val++;
2772:
1.199 schwarze 2773: len = 0;
2774: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2775: return ROFF_IGN;
2776:
2777: step = val + len;
2778: while (isspace((unsigned char)*step))
2779: step++;
2780: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2781: is = INT_MIN;
1.1 schwarze 2782:
1.199 schwarze 2783: roff_setregn(r, key, keysz, iv, sign, is);
1.149 schwarze 2784: return ROFF_IGN;
1.76 schwarze 2785: }
2786:
2787: static enum rofferr
2788: roff_rr(ROFF_ARGS)
2789: {
2790: struct roffreg *reg, **prev;
1.85 schwarze 2791: char *name, *cp;
2792: size_t namesz;
1.76 schwarze 2793:
1.110 schwarze 2794: name = cp = buf->buf + pos;
2795: if (*name == '\0')
1.149 schwarze 2796: return ROFF_IGN;
1.85 schwarze 2797: namesz = roff_getname(r, &cp, ln, pos);
2798: name[namesz] = '\0';
1.76 schwarze 2799:
2800: prev = &r->regtab;
2801: while (1) {
2802: reg = *prev;
1.110 schwarze 2803: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2804: break;
2805: prev = ®->next;
2806: }
1.110 schwarze 2807: if (reg != NULL) {
1.76 schwarze 2808: *prev = reg->next;
2809: free(reg->key.p);
2810: free(reg);
2811: }
1.149 schwarze 2812: return ROFF_IGN;
1.29 schwarze 2813: }
2814:
1.138 schwarze 2815: /* --- handler functions for roff requests -------------------------------- */
2816:
1.29 schwarze 2817: static enum rofferr
2818: roff_rm(ROFF_ARGS)
2819: {
2820: const char *name;
2821: char *cp;
1.85 schwarze 2822: size_t namesz;
1.29 schwarze 2823:
1.110 schwarze 2824: cp = buf->buf + pos;
2825: while (*cp != '\0') {
1.85 schwarze 2826: name = cp;
1.110 schwarze 2827: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2828: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 2829: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 2830: if (name[namesz] == '\\')
1.85 schwarze 2831: break;
1.29 schwarze 2832: }
1.149 schwarze 2833: return ROFF_IGN;
1.51 schwarze 2834: }
2835:
2836: static enum rofferr
2837: roff_it(ROFF_ARGS)
2838: {
2839: int iv;
2840:
2841: /* Parse the number of lines. */
1.133 schwarze 2842:
2843: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2844: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2845: ln, ppos, buf->buf + 1);
1.149 schwarze 2846: return ROFF_IGN;
1.51 schwarze 2847: }
2848:
1.134 schwarze 2849: while (isspace((unsigned char)buf->buf[pos]))
2850: pos++;
2851:
2852: /*
2853: * Arm the input line trap.
2854: * Special-casing "an-trap" is an ugly workaround to cope
2855: * with DocBook stupidly fiddling with man(7) internals.
2856: */
1.133 schwarze 2857:
1.51 schwarze 2858: roffit_lines = iv;
1.134 schwarze 2859: roffit_macro = mandoc_strdup(iv != 1 ||
2860: strcmp(buf->buf + pos, "an-trap") ?
2861: buf->buf + pos : "br");
1.149 schwarze 2862: return ROFF_IGN;
1.47 schwarze 2863: }
2864:
2865: static enum rofferr
2866: roff_Dd(ROFF_ARGS)
2867: {
1.187 schwarze 2868: int mask;
2869: enum roff_tok t, te;
1.99 schwarze 2870:
1.187 schwarze 2871: switch (tok) {
2872: case ROFF_Dd:
2873: tok = MDOC_Dd;
2874: te = MDOC_MAX;
2875: if (r->format == 0)
2876: r->format = MPARSE_MDOC;
2877: mask = MPARSE_MDOC | MPARSE_QUICK;
2878: break;
2879: case ROFF_TH:
2880: tok = MAN_TH;
2881: te = MAN_MAX;
2882: if (r->format == 0)
2883: r->format = MPARSE_MAN;
2884: mask = MPARSE_QUICK;
2885: break;
2886: default:
2887: abort();
2888: }
2889: if ((r->options & mask) == 0)
2890: for (t = tok; t < te; t++)
2891: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 2892: return ROFF_CONT;
1.14 schwarze 2893: }
2894:
2895: static enum rofferr
1.27 schwarze 2896: roff_TE(ROFF_ARGS)
2897: {
1.193 schwarze 2898: if (r->tbl == NULL) {
1.94 schwarze 2899: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2900: ln, ppos, "TE");
1.193 schwarze 2901: return ROFF_IGN;
2902: }
2903: if (tbl_end(r->tbl) == 0) {
2904: r->tbl = NULL;
1.130 schwarze 2905: free(buf->buf);
2906: buf->buf = mandoc_strdup(".sp");
2907: buf->sz = 4;
1.201 schwarze 2908: *offs = 0;
1.149 schwarze 2909: return ROFF_REPARSE;
1.130 schwarze 2910: }
1.193 schwarze 2911: r->tbl = NULL;
1.149 schwarze 2912: return ROFF_IGN;
1.27 schwarze 2913: }
2914:
2915: static enum rofferr
2916: roff_T_(ROFF_ARGS)
2917: {
2918:
2919: if (NULL == r->tbl)
1.94 schwarze 2920: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2921: ln, ppos, "T&");
1.27 schwarze 2922: else
1.168 schwarze 2923: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 2924:
1.149 schwarze 2925: return ROFF_IGN;
1.27 schwarze 2926: }
2927:
1.102 schwarze 2928: /*
2929: * Handle in-line equation delimiters.
2930: */
2931: static enum rofferr
1.110 schwarze 2932: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2933: {
1.105 schwarze 2934: char *cp1, *cp2;
2935: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2936:
1.102 schwarze 2937: /*
2938: * Outside equations, look for an opening delimiter.
2939: * If we are inside an equation, we already know it is
2940: * in-line, or this function wouldn't have been called;
2941: * so look for a closing delimiter.
2942: */
2943:
1.110 schwarze 2944: cp1 = buf->buf + pos;
1.102 schwarze 2945: cp2 = strchr(cp1, r->eqn == NULL ?
2946: r->last_eqn->odelim : r->last_eqn->cdelim);
2947: if (cp2 == NULL)
1.149 schwarze 2948: return ROFF_CONT;
1.102 schwarze 2949:
1.105 schwarze 2950: *cp2++ = '\0';
2951: bef_pr = bef_nl = aft_nl = aft_pr = "";
2952:
2953: /* Handle preceding text, protecting whitespace. */
2954:
1.110 schwarze 2955: if (*buf->buf != '\0') {
1.105 schwarze 2956: if (r->eqn == NULL)
2957: bef_pr = "\\&";
2958: bef_nl = "\n";
2959: }
2960:
2961: /*
2962: * Prepare replacing the delimiter with an equation macro
2963: * and drop leading white space from the equation.
2964: */
1.102 schwarze 2965:
1.105 schwarze 2966: if (r->eqn == NULL) {
2967: while (*cp2 == ' ')
2968: cp2++;
2969: mac = ".EQ";
2970: } else
2971: mac = ".EN";
2972:
2973: /* Handle following text, protecting whitespace. */
2974:
2975: if (*cp2 != '\0') {
2976: aft_nl = "\n";
2977: if (r->eqn != NULL)
2978: aft_pr = "\\&";
2979: }
2980:
2981: /* Do the actual replacement. */
2982:
1.110 schwarze 2983: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2984: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2985: free(buf->buf);
2986: buf->buf = cp1;
1.102 schwarze 2987:
2988: /* Toggle the in-line state of the eqn subsystem. */
2989:
2990: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2991: return ROFF_REPARSE;
1.41 schwarze 2992: }
2993:
1.107 schwarze 2994: static enum rofferr
2995: roff_EQ(ROFF_ARGS)
1.32 schwarze 2996: {
1.191 schwarze 2997: struct roff_node *n;
2998:
1.194 schwarze 2999: if (r->man->macroset == MACROSET_MAN)
3000: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 3001: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3002: if (ln > r->man->last->line)
3003: n->flags |= NODE_LINE;
3004: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
3005: n->eqn->expectargs = UINT_MAX;
3006: roff_node_append(r->man, n);
3007: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 3008:
1.110 schwarze 3009: assert(r->eqn == NULL);
1.191 schwarze 3010: if (r->last_eqn == NULL)
3011: r->last_eqn = eqn_alloc(r->parse);
3012: else
3013: eqn_reset(r->last_eqn);
3014: r->eqn = r->last_eqn;
3015: r->eqn->node = n;
1.41 schwarze 3016:
1.110 schwarze 3017: if (buf->buf[pos] != '\0')
1.107 schwarze 3018: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 3019: ".EQ %s", buf->buf + pos);
1.41 schwarze 3020:
1.149 schwarze 3021: return ROFF_IGN;
1.32 schwarze 3022: }
3023:
3024: static enum rofferr
3025: roff_EN(ROFF_ARGS)
3026: {
1.191 schwarze 3027: if (r->eqn != NULL) {
3028: eqn_parse(r->eqn);
3029: r->eqn = NULL;
3030: } else
3031: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
3032: if (buf->buf[pos] != '\0')
3033: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3034: "EN %s", buf->buf + pos);
1.149 schwarze 3035: return ROFF_IGN;
1.32 schwarze 3036: }
3037:
3038: static enum rofferr
1.27 schwarze 3039: roff_TS(ROFF_ARGS)
3040: {
1.193 schwarze 3041: if (r->tbl != NULL) {
1.94 schwarze 3042: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
3043: ln, ppos, "TS breaks TS");
1.193 schwarze 3044: tbl_end(r->tbl);
1.27 schwarze 3045: }
1.193 schwarze 3046: r->tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 3047: if (r->last_tbl)
1.193 schwarze 3048: r->last_tbl->next = r->tbl;
1.27 schwarze 3049: else
1.193 schwarze 3050: r->first_tbl = r->tbl;
3051: r->last_tbl = r->tbl;
1.169 schwarze 3052: return ROFF_IGN;
3053: }
3054:
3055: static enum rofferr
3056: roff_onearg(ROFF_ARGS)
3057: {
3058: struct roff_node *n;
3059: char *cp;
1.177 schwarze 3060: int npos;
1.169 schwarze 3061:
1.174 schwarze 3062: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 3063: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3064: tok == ROFF_ti))
1.174 schwarze 3065: man_breakscope(r->man, tok);
3066:
1.181 schwarze 3067: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 3068: r->man->last = roffce_node;
3069: r->man->next = ROFF_NEXT_SIBLING;
3070: }
3071:
1.169 schwarze 3072: roff_elem_alloc(r->man, ln, ppos, tok);
3073: n = r->man->last;
3074:
3075: cp = buf->buf + pos;
3076: if (*cp != '\0') {
3077: while (*cp != '\0' && *cp != ' ')
3078: cp++;
3079: while (*cp == ' ')
3080: *cp++ = '\0';
3081: if (*cp != '\0')
3082: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
3083: r->parse, ln, cp - buf->buf,
3084: "%s ... %s", roff_name[tok], cp);
3085: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 3086: }
3087:
1.181 schwarze 3088: if (tok == ROFF_ce || tok == ROFF_rj) {
3089: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 3090: roff_word_alloc(r->man, ln, pos, "1");
3091: r->man->last->flags |= NODE_NOSRC;
3092: }
3093: npos = 0;
3094: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3095: &roffce_lines, 0) == 0) {
3096: mandoc_vmsg(MANDOCERR_CE_NONUM,
3097: r->parse, ln, pos, "ce %s", buf->buf + pos);
3098: roffce_lines = 1;
3099: }
3100: if (roffce_lines < 1) {
3101: r->man->last = r->man->last->parent;
3102: roffce_node = NULL;
3103: roffce_lines = 0;
3104: } else
3105: roffce_node = r->man->last->parent;
3106: } else {
3107: n->flags |= NODE_VALID | NODE_ENDED;
3108: r->man->last = n;
3109: }
3110: n->flags |= NODE_LINE;
1.172 schwarze 3111: r->man->next = ROFF_NEXT_SIBLING;
3112: return ROFF_IGN;
3113: }
3114:
3115: static enum rofferr
3116: roff_manyarg(ROFF_ARGS)
3117: {
3118: struct roff_node *n;
3119: char *sp, *ep;
3120:
3121: roff_elem_alloc(r->man, ln, ppos, tok);
3122: n = r->man->last;
3123:
3124: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3125: while (*ep != '\0' && *ep != ' ')
3126: ep++;
3127: while (*ep == ' ')
3128: *ep++ = '\0';
3129: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3130: }
3131:
3132: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3133: r->man->last = n;
3134: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3135: return ROFF_IGN;
1.123 schwarze 3136: }
3137:
3138: static enum rofferr
1.183 schwarze 3139: roff_als(ROFF_ARGS)
3140: {
3141: char *oldn, *newn, *end, *value;
3142: size_t oldsz, newsz, valsz;
3143:
3144: newn = oldn = buf->buf + pos;
3145: if (*newn == '\0')
3146: return ROFF_IGN;
3147:
3148: newsz = roff_getname(r, &oldn, ln, pos);
3149: if (newn[newsz] == '\\' || *oldn == '\0')
3150: return ROFF_IGN;
3151:
3152: end = oldn;
3153: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3154: if (oldsz == 0)
3155: return ROFF_IGN;
3156:
1.210 ! schwarze 3157: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.187 schwarze 3158: (int)oldsz, oldn);
1.183 schwarze 3159: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3160: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3161: free(value);
3162: return ROFF_IGN;
3163: }
3164:
3165: static enum rofferr
1.168 schwarze 3166: roff_br(ROFF_ARGS)
1.123 schwarze 3167: {
1.174 schwarze 3168: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3169: man_breakscope(r->man, ROFF_br);
1.168 schwarze 3170: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3171: if (buf->buf[pos] != '\0')
3172: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3173: "%s %s", roff_name[tok], buf->buf + pos);
3174: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3175: r->man->next = ROFF_NEXT_SIBLING;
3176: return ROFF_IGN;
1.27 schwarze 3177: }
3178:
3179: static enum rofferr
1.48 schwarze 3180: roff_cc(ROFF_ARGS)
3181: {
3182: const char *p;
3183:
1.110 schwarze 3184: p = buf->buf + pos;
1.48 schwarze 3185:
1.110 schwarze 3186: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3187: r->control = '\0';
1.48 schwarze 3188:
1.110 schwarze 3189: if (*p != '\0')
1.132 schwarze 3190: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3191: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3192:
1.149 schwarze 3193: return ROFF_IGN;
1.48 schwarze 3194: }
3195:
3196: static enum rofferr
1.175 schwarze 3197: roff_ec(ROFF_ARGS)
3198: {
3199: const char *p;
3200:
3201: p = buf->buf + pos;
3202: if (*p == '\0')
3203: r->escape = '\\';
3204: else {
3205: r->escape = *p;
3206: if (*++p != '\0')
3207: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3208: ln, p - buf->buf, "ec ... %s", p);
3209: }
3210: return ROFF_IGN;
3211: }
3212:
3213: static enum rofferr
3214: roff_eo(ROFF_ARGS)
3215: {
3216: r->escape = '\0';
3217: if (buf->buf[pos] != '\0')
3218: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3219: ln, pos, "eo %s", buf->buf + pos);
3220: return ROFF_IGN;
1.202 schwarze 3221: }
3222:
3223: static enum rofferr
3224: roff_nop(ROFF_ARGS)
3225: {
3226: while (buf->buf[pos] == ' ')
3227: pos++;
3228: *offs = pos;
3229: return ROFF_RERUN;
1.175 schwarze 3230: }
3231:
3232: static enum rofferr
1.42 schwarze 3233: roff_tr(ROFF_ARGS)
3234: {
3235: const char *p, *first, *second;
3236: size_t fsz, ssz;
3237: enum mandoc_esc esc;
3238:
1.110 schwarze 3239: p = buf->buf + pos;
1.42 schwarze 3240:
1.110 schwarze 3241: if (*p == '\0') {
1.132 schwarze 3242: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 3243: return ROFF_IGN;
1.42 schwarze 3244: }
3245:
1.110 schwarze 3246: while (*p != '\0') {
1.42 schwarze 3247: fsz = ssz = 1;
3248:
3249: first = p++;
1.110 schwarze 3250: if (*first == '\\') {
1.42 schwarze 3251: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3252: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3253: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3254: ln, (int)(p - buf->buf), first);
1.149 schwarze 3255: return ROFF_IGN;
1.42 schwarze 3256: }
3257: fsz = (size_t)(p - first);
3258: }
3259:
3260: second = p++;
1.110 schwarze 3261: if (*second == '\\') {
1.42 schwarze 3262: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3263: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3264: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3265: ln, (int)(p - buf->buf), second);
1.149 schwarze 3266: return ROFF_IGN;
1.42 schwarze 3267: }
3268: ssz = (size_t)(p - second);
1.110 schwarze 3269: } else if (*second == '\0') {
1.132 schwarze 3270: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3271: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3272: second = " ";
3273: p--;
3274: }
3275:
3276: if (fsz > 1) {
1.80 schwarze 3277: roff_setstrn(&r->xmbtab, first, fsz,
3278: second, ssz, 0);
1.42 schwarze 3279: continue;
3280: }
3281:
1.110 schwarze 3282: if (r->xtab == NULL)
1.80 schwarze 3283: r->xtab = mandoc_calloc(128,
3284: sizeof(struct roffstr));
1.42 schwarze 3285:
3286: free(r->xtab[(int)*first].p);
3287: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3288: r->xtab[(int)*first].sz = ssz;
3289: }
3290:
1.149 schwarze 3291: return ROFF_IGN;
1.42 schwarze 3292: }
3293:
3294: static enum rofferr
1.178 schwarze 3295: roff_rn(ROFF_ARGS)
3296: {
3297: const char *value;
3298: char *oldn, *newn, *end;
3299: size_t oldsz, newsz;
1.187 schwarze 3300: int deftype;
1.178 schwarze 3301:
3302: oldn = newn = buf->buf + pos;
3303: if (*oldn == '\0')
3304: return ROFF_IGN;
3305:
3306: oldsz = roff_getname(r, &newn, ln, pos);
3307: if (oldn[oldsz] == '\\' || *newn == '\0')
3308: return ROFF_IGN;
3309:
3310: end = newn;
3311: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3312: if (newsz == 0)
3313: return ROFF_IGN;
3314:
1.187 schwarze 3315: deftype = ROFFDEF_ANY;
3316: value = roff_getstrn(r, oldn, oldsz, &deftype);
3317: switch (deftype) {
3318: case ROFFDEF_USER:
1.178 schwarze 3319: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3320: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3321: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3322: break;
3323: case ROFFDEF_PRE:
3324: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3325: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3326: break;
3327: case ROFFDEF_REN:
1.178 schwarze 3328: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3329: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3330: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3331: break;
3332: case ROFFDEF_STD:
1.178 schwarze 3333: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3334: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3335: break;
3336: default:
3337: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3338: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3339: break;
3340: }
1.178 schwarze 3341: return ROFF_IGN;
3342: }
3343:
3344: static enum rofferr
1.14 schwarze 3345: roff_so(ROFF_ARGS)
3346: {
1.121 schwarze 3347: char *name, *cp;
1.15 schwarze 3348:
1.110 schwarze 3349: name = buf->buf + pos;
1.97 schwarze 3350: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3351:
1.22 schwarze 3352: /*
3353: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3354: * opening anything that's not in our cwd or anything beneath
3355: * it. Thus, explicitly disallow traversing up the file-system
3356: * or using absolute paths.
3357: */
3358:
1.110 schwarze 3359: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3360: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3361: ".so %s", name);
1.121 schwarze 3362: buf->sz = mandoc_asprintf(&cp,
3363: ".sp\nSee the file %s.\n.sp", name) + 1;
3364: free(buf->buf);
3365: buf->buf = cp;
3366: *offs = 0;
1.149 schwarze 3367: return ROFF_REPARSE;
1.14 schwarze 3368: }
3369:
3370: *offs = pos;
1.149 schwarze 3371: return ROFF_SO;
1.7 schwarze 3372: }
3373:
1.138 schwarze 3374: /* --- user defined strings and macros ------------------------------------ */
3375:
1.16 schwarze 3376: static enum rofferr
3377: roff_userdef(ROFF_ARGS)
1.12 schwarze 3378: {
1.183 schwarze 3379: const char *arg[16], *ap;
1.16 schwarze 3380: char *cp, *n1, *n2;
1.210 ! schwarze 3381: int argc, expand_count, i, ib, ie, quote_args;
1.209 schwarze 3382: size_t asz, esz, rsz;
1.12 schwarze 3383:
1.16 schwarze 3384: /*
3385: * Collect pointers to macro argument strings
1.61 schwarze 3386: * and NUL-terminate them.
1.16 schwarze 3387: */
1.135 schwarze 3388:
1.209 schwarze 3389: argc = 0;
1.110 schwarze 3390: cp = buf->buf + pos;
1.183 schwarze 3391: for (i = 0; i < 16; i++) {
1.145 schwarze 3392: if (*cp == '\0')
3393: arg[i] = "";
3394: else {
3395: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
1.209 schwarze 3396: argc = i + 1;
1.145 schwarze 3397: }
3398: }
1.16 schwarze 3399:
3400: /*
3401: * Expand macro arguments.
1.12 schwarze 3402: */
1.135 schwarze 3403:
3404: buf->sz = strlen(r->current_string) + 1;
1.164 schwarze 3405: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.135 schwarze 3406: memcpy(n1, r->current_string, buf->sz);
1.164 schwarze 3407: expand_count = 0;
1.135 schwarze 3408: while (*cp != '\0') {
3409:
3410: /* Scan ahead for the next argument invocation. */
3411:
3412: if (*cp++ != '\\')
3413: continue;
3414: if (*cp++ != '$')
3415: continue;
1.210 ! schwarze 3416:
! 3417: quote_args = 0;
! 3418: switch (*cp) {
! 3419: case '@': /* \\$@ inserts all arguments, quoted */
! 3420: quote_args = 1;
! 3421: /* FALLTHROUGH */
! 3422: case '*': /* \\$* inserts all arguments, unquoted */
1.146 schwarze 3423: ib = 0;
1.209 schwarze 3424: ie = argc - 1;
1.210 ! schwarze 3425: break;
! 3426: default: /* \\$1 .. \\$9 insert one argument */
1.146 schwarze 3427: ib = ie = *cp - '1';
3428: if (ib < 0 || ib > 8)
3429: continue;
1.210 ! schwarze 3430: break;
1.146 schwarze 3431: }
1.135 schwarze 3432: cp -= 2;
1.164 schwarze 3433:
3434: /*
3435: * Prevent infinite recursion.
3436: */
3437:
3438: if (cp >= n2)
3439: expand_count = 1;
3440: else if (++expand_count > EXPAND_LIMIT) {
3441: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3442: ln, (int)(cp - n1), NULL);
1.165 schwarze 3443: free(buf->buf);
3444: buf->buf = n1;
1.201 schwarze 3445: *offs = 0;
1.164 schwarze 3446: return ROFF_IGN;
3447: }
1.135 schwarze 3448:
3449: /*
3450: * Determine the size of the expanded argument,
3451: * taking escaping of quotes into account.
3452: */
3453:
1.146 schwarze 3454: asz = ie > ib ? ie - ib : 0; /* for blanks */
3455: for (i = ib; i <= ie; i++) {
1.210 ! schwarze 3456: if (quote_args)
! 3457: asz += 2;
1.146 schwarze 3458: for (ap = arg[i]; *ap != '\0'; ap++) {
3459: asz++;
3460: if (*ap == '"')
3461: asz += 3;
3462: }
1.135 schwarze 3463: }
3464: if (asz != 3) {
3465:
3466: /*
3467: * Determine the size of the rest of the
3468: * unexpanded macro, including the NUL.
3469: */
3470:
3471: rsz = buf->sz - (cp - n1) - 3;
3472:
3473: /*
3474: * When shrinking, move before
3475: * releasing the storage.
3476: */
3477:
3478: if (asz < 3)
3479: memmove(cp + asz, cp + 3, rsz);
3480:
3481: /*
3482: * Resize the storage for the macro
3483: * and readjust the parse pointer.
3484: */
3485:
3486: buf->sz += asz - 3;
3487: n2 = mandoc_realloc(n1, buf->sz);
3488: cp = n2 + (cp - n1);
3489: n1 = n2;
3490:
3491: /*
3492: * When growing, make room
3493: * for the expanded argument.
3494: */
3495:
3496: if (asz > 3)
3497: memmove(cp + asz, cp + 3, rsz);
3498: }
3499:
3500: /* Copy the expanded argument, escaping quotes. */
3501:
3502: n2 = cp;
1.146 schwarze 3503: for (i = ib; i <= ie; i++) {
1.210 ! schwarze 3504: if (quote_args)
! 3505: *n2++ = '"';
1.146 schwarze 3506: for (ap = arg[i]; *ap != '\0'; ap++) {
3507: if (*ap == '"') {
3508: memcpy(n2, "\\(dq", 4);
3509: n2 += 4;
3510: } else
3511: *n2++ = *ap;
3512: }
1.210 ! schwarze 3513: if (quote_args)
! 3514: *n2++ = '"';
1.146 schwarze 3515: if (i < ie)
3516: *n2++ = ' ';
1.16 schwarze 3517: }
1.209 schwarze 3518: }
3519:
3520: /*
3521: * Expand the number of arguments, if it is used.
3522: * This never makes the expanded macro longer.
3523: */
3524:
3525: for (cp = n1; *cp != '\0'; cp++) {
3526: if (cp[0] != '\\')
3527: continue;
3528: if (cp[1] == '\\') {
3529: cp++;
3530: continue;
3531: }
3532: if (strncmp(cp + 1, "n(.$", 4) == 0)
3533: esz = 5;
3534: else if (strncmp(cp + 1, "n[.$]", 5) == 0)
3535: esz = 6;
3536: else
3537: continue;
3538: asz = snprintf(cp, esz, "%d", argc);
3539: assert(asz < esz);
3540: rsz = buf->sz - (cp - n1) - esz;
3541: memmove(cp + asz, cp + esz, rsz);
3542: buf->sz -= esz - asz;
3543: n2 = mandoc_realloc(n1, buf->sz);
3544: cp = n2 + (cp - n1) + asz;
3545: n1 = n2;
1.12 schwarze 3546: }
3547:
1.16 schwarze 3548: /*
3549: * Replace the macro invocation
3550: * by the expanded macro.
3551: */
1.135 schwarze 3552:
1.110 schwarze 3553: free(buf->buf);
3554: buf->buf = n1;
1.120 schwarze 3555: *offs = 0;
1.16 schwarze 3556:
1.149 schwarze 3557: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3558: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3559: }
1.28 schwarze 3560:
1.178 schwarze 3561: /*
3562: * Calling a high-level macro that was renamed with .rn.
3563: * r->current_string has already been set up by roff_parse().
3564: */
3565: static enum rofferr
3566: roff_renamed(ROFF_ARGS)
3567: {
3568: char *nbuf;
3569:
1.187 schwarze 3570: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3571: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3572: free(buf->buf);
3573: buf->buf = nbuf;
1.201 schwarze 3574: *offs = 0;
1.178 schwarze 3575: return ROFF_CONT;
3576: }
3577:
1.85 schwarze 3578: static size_t
1.28 schwarze 3579: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3580: {
3581: char *name, *cp;
1.85 schwarze 3582: size_t namesz;
1.28 schwarze 3583:
3584: name = *cpp;
3585: if ('\0' == *name)
1.149 schwarze 3586: return 0;
1.28 schwarze 3587:
1.85 schwarze 3588: /* Read until end of name and terminate it with NUL. */
3589: for (cp = name; 1; cp++) {
3590: if ('\0' == *cp || ' ' == *cp) {
3591: namesz = cp - name;
3592: break;
3593: }
1.28 schwarze 3594: if ('\\' != *cp)
3595: continue;
1.88 schwarze 3596: namesz = cp - name;
3597: if ('{' == cp[1] || '}' == cp[1])
3598: break;
1.28 schwarze 3599: cp++;
3600: if ('\\' == *cp)
3601: continue;
1.97 schwarze 3602: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3603: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3604: mandoc_escape((const char **)&cp, NULL, NULL);
3605: break;
1.28 schwarze 3606: }
3607:
3608: /* Read past spaces. */
3609: while (' ' == *cp)
3610: cp++;
3611:
3612: *cpp = cp;
1.149 schwarze 3613: return namesz;
1.28 schwarze 3614: }
3615:
1.16 schwarze 3616: /*
3617: * Store *string into the user-defined string called *name.
3618: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3619: * append == 0: replace mode
3620: * append == 1: single-line append mode
3621: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3622: */
1.8 schwarze 3623: static void
1.16 schwarze 3624: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3625: int append)
1.7 schwarze 3626: {
1.187 schwarze 3627: size_t namesz;
1.42 schwarze 3628:
1.187 schwarze 3629: namesz = strlen(name);
3630: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3631: string ? strlen(string) : 0, append);
1.187 schwarze 3632: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3633: }
3634:
3635: static void
3636: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3637: const char *string, size_t stringsz, int append)
1.42 schwarze 3638: {
3639: struct roffkv *n;
3640: char *c;
3641: int i;
3642: size_t oldch, newch;
1.7 schwarze 3643:
1.16 schwarze 3644: /* Search for an existing string with the same name. */
1.42 schwarze 3645: n = *r;
3646:
1.84 schwarze 3647: while (n && (namesz != n->key.sz ||
3648: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3649: n = n->next;
1.8 schwarze 3650:
3651: if (NULL == n) {
1.16 schwarze 3652: /* Create a new string table entry. */
1.42 schwarze 3653: n = mandoc_malloc(sizeof(struct roffkv));
3654: n->key.p = mandoc_strndup(name, namesz);
3655: n->key.sz = namesz;
3656: n->val.p = NULL;
3657: n->val.sz = 0;
3658: n->next = *r;
3659: *r = n;
1.66 schwarze 3660: } else if (0 == append) {
1.42 schwarze 3661: free(n->val.p);
3662: n->val.p = NULL;
3663: n->val.sz = 0;
1.16 schwarze 3664: }
3665:
3666: if (NULL == string)
3667: return;
3668:
3669: /*
3670: * One additional byte for the '\n' in multiline mode,
3671: * and one for the terminating '\0'.
3672: */
1.66 schwarze 3673: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3674:
3675: if (NULL == n->val.p) {
3676: n->val.p = mandoc_malloc(newch);
3677: *n->val.p = '\0';
1.16 schwarze 3678: oldch = 0;
3679: } else {
1.42 schwarze 3680: oldch = n->val.sz;
3681: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3682: }
3683:
3684: /* Skip existing content in the destination buffer. */
1.42 schwarze 3685: c = n->val.p + (int)oldch;
1.16 schwarze 3686:
3687: /* Append new content to the destination buffer. */
1.42 schwarze 3688: i = 0;
3689: while (i < (int)stringsz) {
1.16 schwarze 3690: /*
3691: * Rudimentary roff copy mode:
3692: * Handle escaped backslashes.
3693: */
1.42 schwarze 3694: if ('\\' == string[i] && '\\' == string[i + 1])
3695: i++;
3696: *c++ = string[i++];
1.16 schwarze 3697: }
1.8 schwarze 3698:
1.16 schwarze 3699: /* Append terminating bytes. */
1.66 schwarze 3700: if (1 < append)
1.16 schwarze 3701: *c++ = '\n';
1.42 schwarze 3702:
1.16 schwarze 3703: *c = '\0';
1.42 schwarze 3704: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3705: }
3706:
1.8 schwarze 3707: static const char *
1.197 schwarze 3708: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 3709: int *deftype)
1.7 schwarze 3710: {
1.187 schwarze 3711: const struct roffkv *n;
1.197 schwarze 3712: int found, i;
1.187 schwarze 3713: enum roff_tok tok;
3714:
1.197 schwarze 3715: found = 0;
3716: for (n = r->strtab; n != NULL; n = n->next) {
3717: if (strncmp(name, n->key.p, len) != 0 ||
3718: n->key.p[len] != '\0' || n->val.p == NULL)
3719: continue;
3720: if (*deftype & ROFFDEF_USER) {
3721: *deftype = ROFFDEF_USER;
3722: return n->val.p;
3723: } else {
3724: found = 1;
3725: break;
3726: }
3727: }
3728: for (n = r->rentab; n != NULL; n = n->next) {
3729: if (strncmp(name, n->key.p, len) != 0 ||
3730: n->key.p[len] != '\0' || n->val.p == NULL)
3731: continue;
3732: if (*deftype & ROFFDEF_REN) {
3733: *deftype = ROFFDEF_REN;
3734: return n->val.p;
3735: } else {
3736: found = 1;
3737: break;
1.187 schwarze 3738: }
3739: }
1.197 schwarze 3740: for (i = 0; i < PREDEFS_MAX; i++) {
3741: if (strncmp(name, predefs[i].name, len) != 0 ||
3742: predefs[i].name[len] != '\0')
3743: continue;
3744: if (*deftype & ROFFDEF_PRE) {
3745: *deftype = ROFFDEF_PRE;
3746: return predefs[i].str;
3747: } else {
3748: found = 1;
3749: break;
1.187 schwarze 3750: }
3751: }
1.197 schwarze 3752: if (r->man->macroset != MACROSET_MAN) {
3753: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3754: if (strncmp(name, roff_name[tok], len) != 0 ||
3755: roff_name[tok][len] != '\0')
3756: continue;
3757: if (*deftype & ROFFDEF_STD) {
3758: *deftype = ROFFDEF_STD;
3759: return NULL;
3760: } else {
3761: found = 1;
3762: break;
1.187 schwarze 3763: }
3764: }
3765: }
1.197 schwarze 3766: if (r->man->macroset != MACROSET_MDOC) {
3767: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3768: if (strncmp(name, roff_name[tok], len) != 0 ||
3769: roff_name[tok][len] != '\0')
3770: continue;
3771: if (*deftype & ROFFDEF_STD) {
3772: *deftype = ROFFDEF_STD;
3773: return NULL;
3774: } else {
3775: found = 1;
3776: break;
1.187 schwarze 3777: }
3778: }
1.197 schwarze 3779: }
3780:
3781: if (found == 0 && *deftype != ROFFDEF_ANY) {
3782: if (*deftype & ROFFDEF_REN) {
3783: /*
3784: * This might still be a request,
3785: * so do not treat it as undefined yet.
3786: */
3787: *deftype = ROFFDEF_UNDEF;
3788: return NULL;
1.187 schwarze 3789: }
1.197 schwarze 3790:
3791: /* Using an undefined string defines it to be empty. */
3792:
3793: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3794: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 3795: }
1.197 schwarze 3796:
1.187 schwarze 3797: *deftype = 0;
1.149 schwarze 3798: return NULL;
1.7 schwarze 3799: }
3800:
1.8 schwarze 3801: static void
1.42 schwarze 3802: roff_freestr(struct roffkv *r)
1.7 schwarze 3803: {
1.42 schwarze 3804: struct roffkv *n, *nn;
1.7 schwarze 3805:
1.42 schwarze 3806: for (n = r; n; n = nn) {
3807: free(n->key.p);
3808: free(n->val.p);
1.7 schwarze 3809: nn = n->next;
3810: free(n);
3811: }
1.27 schwarze 3812: }
1.138 schwarze 3813:
3814: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 3815:
3816: /*
3817: * Duplicate an input string, making the appropriate character
3818: * conversations (as stipulated by `tr') along the way.
3819: * Returns a heap-allocated string with all the replacements made.
3820: */
3821: char *
3822: roff_strdup(const struct roff *r, const char *p)
3823: {
3824: const struct roffkv *cp;
3825: char *res;
3826: const char *pp;
3827: size_t ssz, sz;
3828: enum mandoc_esc esc;
3829:
3830: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3831: return mandoc_strdup(p);
1.42 schwarze 3832: else if ('\0' == *p)
1.149 schwarze 3833: return mandoc_strdup("");
1.42 schwarze 3834:
3835: /*
3836: * Step through each character looking for term matches
3837: * (remember that a `tr' can be invoked with an escape, which is
3838: * a glyph but the escape is multi-character).
3839: * We only do this if the character hash has been initialised
3840: * and the string is >0 length.
3841: */
3842:
3843: res = NULL;
3844: ssz = 0;
3845:
3846: while ('\0' != *p) {
1.161 schwarze 3847: assert((unsigned int)*p < 128);
3848: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3849: sz = r->xtab[(int)*p].sz;
3850: res = mandoc_realloc(res, ssz + sz + 1);
3851: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3852: ssz += sz;
3853: p++;
3854: continue;
3855: } else if ('\\' != *p) {
3856: res = mandoc_realloc(res, ssz + 2);
3857: res[ssz++] = *p++;
3858: continue;
3859: }
3860:
3861: /* Search for term matches. */
3862: for (cp = r->xmbtab; cp; cp = cp->next)
3863: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3864: break;
3865:
3866: if (NULL != cp) {
3867: /*
3868: * A match has been found.
3869: * Append the match to the array and move
3870: * forward by its keysize.
3871: */
1.80 schwarze 3872: res = mandoc_realloc(res,
3873: ssz + cp->val.sz + 1);
1.42 schwarze 3874: memcpy(res + ssz, cp->val.p, cp->val.sz);
3875: ssz += cp->val.sz;
3876: p += (int)cp->key.sz;
3877: continue;
3878: }
3879:
3880: /*
3881: * Handle escapes carefully: we need to copy
3882: * over just the escape itself, or else we might
3883: * do replacements within the escape itself.
3884: * Make sure to pass along the bogus string.
3885: */
3886: pp = p++;
3887: esc = mandoc_escape(&p, NULL, NULL);
3888: if (ESCAPE_ERROR == esc) {
3889: sz = strlen(pp);
3890: res = mandoc_realloc(res, ssz + sz + 1);
3891: memcpy(res + ssz, pp, sz);
3892: break;
3893: }
1.80 schwarze 3894: /*
3895: * We bail out on bad escapes.
1.42 schwarze 3896: * No need to warn: we already did so when
3897: * roff_res() was called.
3898: */
3899: sz = (int)(p - pp);
3900: res = mandoc_realloc(res, ssz + sz + 1);
3901: memcpy(res + ssz, pp, sz);
3902: ssz += sz;
3903: }
3904:
3905: res[(int)ssz] = '\0';
1.149 schwarze 3906: return res;
1.99 schwarze 3907: }
3908:
3909: int
3910: roff_getformat(const struct roff *r)
3911: {
3912:
1.149 schwarze 3913: return r->format;
1.48 schwarze 3914: }
3915:
3916: /*
1.80 schwarze 3917: * Find out whether a line is a macro line or not.
1.48 schwarze 3918: * If it is, adjust the current position and return one; if it isn't,
3919: * return zero and don't change the current position.
3920: * If the control character has been set with `.cc', then let that grain
3921: * precedence.
3922: * This is slighly contrary to groff, where using the non-breaking
3923: * control character when `cc' has been invoked will cause the
3924: * non-breaking macro contents to be printed verbatim.
3925: */
3926: int
3927: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3928: {
3929: int pos;
3930:
3931: pos = *ppos;
3932:
1.175 schwarze 3933: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 3934: pos++;
1.175 schwarze 3935: else if (r->control != '\0')
1.149 schwarze 3936: return 0;
1.48 schwarze 3937: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3938: pos += 2;
3939: else if ('.' == cp[pos] || '\'' == cp[pos])
3940: pos++;
3941: else
1.149 schwarze 3942: return 0;
1.48 schwarze 3943:
3944: while (' ' == cp[pos] || '\t' == cp[pos])
3945: pos++;
3946:
3947: *ppos = pos;
1.149 schwarze 3948: return 1;
1.1 schwarze 3949: }
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