Annotation of mandoc/roff.c, Revision 1.298
1.298 ! schwarze 1: /* $Id: roff.c,v 1.297 2017/05/05 02:06:19 schwarze Exp $ */
1.1 kristaps 2: /*
1.267 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.287 schwarze 4: * Copyright (c) 2010-2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.66 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.106 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.66 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.106 kristaps 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.66 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 17: */
1.66 kristaps 18: #include "config.h"
1.225 schwarze 19:
20: #include <sys/types.h>
1.30 kristaps 21:
1.67 kristaps 22: #include <assert.h>
1.85 kristaps 23: #include <ctype.h>
1.245 schwarze 24: #include <limits.h>
1.295 schwarze 25: #include <stddef.h>
26: #include <stdint.h>
1.178 schwarze 27: #include <stdio.h>
1.1 kristaps 28: #include <stdlib.h>
1.67 kristaps 29: #include <string.h>
1.1 kristaps 30:
1.67 kristaps 31: #include "mandoc.h"
1.201 schwarze 32: #include "mandoc_aux.h"
1.295 schwarze 33: #include "mandoc_ohash.h"
1.265 schwarze 34: #include "roff.h"
1.226 schwarze 35: #include "libmandoc.h"
1.266 schwarze 36: #include "roff_int.h"
1.109 kristaps 37: #include "libroff.h"
1.82 kristaps 38:
1.170 schwarze 39: /* Maximum number of string expansions per line, to break infinite loops. */
40: #define EXPAND_LIMIT 1000
41:
1.266 schwarze 42: /* --- data types --------------------------------------------------------- */
43:
1.147 kristaps 44: /*
1.167 kristaps 45: * An incredibly-simple string buffer.
46: */
1.94 kristaps 47: struct roffstr {
1.167 kristaps 48: char *p; /* nil-terminated buffer */
49: size_t sz; /* saved strlen(p) */
1.166 kristaps 50: };
51:
52: /*
1.167 kristaps 53: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 54: */
55: struct roffkv {
56: struct roffstr key;
57: struct roffstr val;
58: struct roffkv *next; /* next in list */
1.94 kristaps 59: };
60:
1.180 schwarze 61: /*
62: * A single number register as part of a singly-linked list.
63: */
64: struct roffreg {
65: struct roffstr key;
1.181 schwarze 66: int val;
1.180 schwarze 67: struct roffreg *next;
68: };
69:
1.295 schwarze 70: /*
71: * Association of request and macro names with token IDs.
72: */
73: struct roffreq {
74: enum roff_tok tok;
75: char name[];
76: };
77:
1.67 kristaps 78: struct roff {
1.128 kristaps 79: struct mparse *parse; /* parse point */
1.296 schwarze 80: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 81: struct roffnode *last; /* leaf of stack */
1.223 schwarze 82: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 83: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 84: struct roffreg *regtab; /* number registers */
1.166 kristaps 85: struct roffkv *strtab; /* user-defined strings & macros */
1.167 kristaps 86: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
87: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 88: const char *current_string; /* value of last called user macro */
1.118 kristaps 89: struct tbl_node *first_tbl; /* first table parsed */
90: struct tbl_node *last_tbl; /* last table parsed */
91: struct tbl_node *tbl; /* current table being parsed */
1.125 kristaps 92: struct eqn_node *last_eqn; /* last equation parsed */
93: struct eqn_node *first_eqn; /* first equation parsed */
94: struct eqn_node *eqn; /* current equation being parsed */
1.230 schwarze 95: int eqn_inline; /* current equation is inline */
1.223 schwarze 96: int options; /* parse options */
97: int rstacksz; /* current size limit of rstack */
98: int rstackpos; /* position in rstack */
1.227 schwarze 99: int format; /* current file in mdoc or man format */
1.273 schwarze 100: int argc; /* number of args of the last macro */
1.223 schwarze 101: char control; /* control character */
1.79 kristaps 102: };
103:
1.67 kristaps 104: struct roffnode {
1.294 schwarze 105: enum roff_tok tok; /* type of node */
1.67 kristaps 106: struct roffnode *parent; /* up one in stack */
107: int line; /* parse line */
108: int col; /* parse col */
1.106 kristaps 109: char *name; /* node name, e.g. macro name */
1.79 kristaps 110: char *end; /* end-rules: custom token */
111: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 112: int rule; /* current evaluation rule */
1.67 kristaps 113: };
114:
115: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 116: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 117: struct buf *buf, /* input buffer */ \
1.67 kristaps 118: int ln, /* parse line */ \
1.75 kristaps 119: int ppos, /* original pos in buffer */ \
120: int pos, /* current pos in buffer */ \
1.74 kristaps 121: int *offs /* reset offset of buffer data */
1.67 kristaps 122:
123: typedef enum rofferr (*roffproc)(ROFF_ARGS);
124:
125: struct roffmac {
1.79 kristaps 126: roffproc proc; /* process new macro */
127: roffproc text; /* process as child text of macro */
128: roffproc sub; /* process as child of macro */
129: int flags;
130: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 131: };
132:
1.141 kristaps 133: struct predef {
134: const char *name; /* predefined input name */
135: const char *str; /* replacement symbol */
136: };
137:
138: #define PREDEF(__name, __str) \
139: { (__name), (__str) },
140:
1.266 schwarze 141: /* --- function prototypes ------------------------------------------------ */
142:
1.155 kristaps 143: static void roffnode_cleanscope(struct roff *);
144: static void roffnode_pop(struct roff *);
1.294 schwarze 145: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 146: const char *, int, int);
1.80 kristaps 147: static enum rofferr roff_block(ROFF_ARGS);
148: static enum rofferr roff_block_text(ROFF_ARGS);
149: static enum rofferr roff_block_sub(ROFF_ARGS);
1.296 schwarze 150: static enum rofferr roff_br(ROFF_ARGS);
1.80 kristaps 151: static enum rofferr roff_cblock(ROFF_ARGS);
1.174 kristaps 152: static enum rofferr roff_cc(ROFF_ARGS);
1.195 schwarze 153: static void roff_ccond(struct roff *, int, int);
1.82 kristaps 154: static enum rofferr roff_cond(ROFF_ARGS);
155: static enum rofferr roff_cond_text(ROFF_ARGS);
156: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.92 schwarze 157: static enum rofferr roff_ds(ROFF_ARGS);
1.238 schwarze 158: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 159: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 160: static int roff_evalnum(struct roff *, int,
161: const char *, int *, int *, int);
162: static int roff_evalpar(struct roff *, int,
1.261 schwarze 163: const char *, int *, int *, int);
1.198 schwarze 164: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 165: static void roff_free1(struct roff *);
1.180 schwarze 166: static void roff_freereg(struct roffreg *);
1.167 kristaps 167: static void roff_freestr(struct roffkv *);
1.212 schwarze 168: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 169: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 170: static int roff_getop(const char *, int *, char *);
1.181 schwarze 171: static int roff_getregn(const struct roff *,
172: const char *, size_t);
1.273 schwarze 173: static int roff_getregro(const struct roff *,
174: const char *name);
1.207 schwarze 175: static const char *roff_getstrn(const struct roff *,
1.94 kristaps 176: const char *, size_t);
1.271 schwarze 177: static int roff_hasregn(const struct roff *,
178: const char *, size_t);
1.251 schwarze 179: static enum rofferr roff_insec(ROFF_ARGS);
1.178 schwarze 180: static enum rofferr roff_it(ROFF_ARGS);
1.103 kristaps 181: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.265 schwarze 182: static void roff_man_alloc1(struct roff_man *);
183: static void roff_man_free1(struct roff_man *);
1.89 kristaps 184: static enum rofferr roff_nr(ROFF_ARGS);
1.297 schwarze 185: static enum rofferr roff_onearg(ROFF_ARGS);
1.294 schwarze 186: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 187: int, int);
1.238 schwarze 188: static enum rofferr roff_parsetext(struct buf *, int, int *);
189: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.122 schwarze 190: static enum rofferr roff_rm(ROFF_ARGS);
1.203 schwarze 191: static enum rofferr roff_rr(ROFF_ARGS);
1.94 kristaps 192: static void roff_setstr(struct roff *,
1.106 kristaps 193: const char *, const char *, int);
1.207 schwarze 194: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 195: size_t, const char *, size_t, int);
1.105 kristaps 196: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 197: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 198: static enum rofferr roff_Dd(ROFF_ARGS);
199: static enum rofferr roff_TH(ROFF_ARGS);
1.109 kristaps 200: static enum rofferr roff_TE(ROFF_ARGS);
201: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 202: static enum rofferr roff_EQ(ROFF_ARGS);
203: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 204: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 205: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 206: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 207:
1.266 schwarze 208: /* --- constant data ------------------------------------------------------ */
209:
1.261 schwarze 210: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
211: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
212:
1.294 schwarze 213: const char *__roff_name[MAN_MAX + 1] = {
1.298 ! schwarze 214: "br", "ft", "ll", NULL,
1.294 schwarze 215: "ab", "ad", "af", "aln",
216: "als", "am", "am1", "ami",
217: "ami1", "as", "as1", "asciify",
218: "backtrace", "bd", "bleedat", "blm",
219: "box", "boxa", "bp", "BP",
220: "break", "breakchar", "brnl", "brp",
221: "brpnl", "c2", "cc", "ce",
222: "cf", "cflags", "ch", "char",
223: "chop", "class", "close", "CL",
224: "color", "composite", "continue", "cp",
225: "cropat", "cs", "cu", "da",
226: "dch", "Dd", "de", "de1",
227: "defcolor", "dei", "dei1", "device",
228: "devicem", "di", "do", "ds",
229: "ds1", "dwh", "dt", "ec",
230: "ecr", "ecs", "el", "em",
231: "EN", "eo", "EP", "EQ",
232: "errprint", "ev", "evc", "ex",
233: "fallback", "fam", "fc", "fchar",
234: "fcolor", "fdeferlig", "feature", "fkern",
235: "fl", "flig", "fp", "fps",
236: "fschar", "fspacewidth", "fspecial", "ftr",
237: "fzoom", "gcolor", "hc", "hcode",
238: "hidechar", "hla", "hlm", "hpf",
239: "hpfa", "hpfcode", "hw", "hy",
240: "hylang", "hylen", "hym", "hypp",
241: "hys", "ie", "if", "ig",
242: "index", "it", "itc", "IX",
243: "kern", "kernafter", "kernbefore", "kernpair",
244: "lc", "lc_ctype", "lds", "length",
245: "letadj", "lf", "lg", "lhang",
246: "linetabs", "lnr", "lnrf", "lpfx",
247: "ls", "lsm", "lt", "mc",
248: "mediasize", "minss", "mk", "mso",
249: "na", "ne", "nh", "nhychar",
250: "nm", "nn", "nop", "nr",
251: "nrf", "nroff", "ns", "nx",
252: "open", "opena", "os", "output",
253: "padj", "papersize", "pc", "pev",
254: "pi", "PI", "pl", "pm",
255: "pn", "pnr", "po", "ps",
256: "psbb", "pshape", "pso", "ptr",
257: "pvs", "rchar", "rd", "recursionlimit",
258: "return", "rfschar", "rhang", "rj",
259: "rm", "rn", "rnn", "rr",
260: "rs", "rt", "schar", "sentchar",
261: "shc", "shift", "sizes", "so",
262: "spacewidth", "special", "spreadwarn", "ss",
263: "sty", "substring", "sv", "sy",
264: "T&", "ta", "tc", "TE",
265: "TH", "ti", "tkf", "tl",
266: "tm", "tm1", "tmc", "tr",
267: "track", "transchar", "trf", "trimat",
268: "trin", "trnt", "troff", "TS",
269: "uf", "ul", "unformat", "unwatch",
270: "unwatchn", "vpt", "vs", "warn",
271: "warnscale", "watch", "watchlength", "watchn",
272: "wh", "while", "write", "writec",
273: "writem", "xflag", ".", NULL,
274: "text",
275: "Dd", "Dt", "Os", "Sh",
276: "Ss", "Pp", "D1", "Dl",
277: "Bd", "Ed", "Bl", "El",
278: "It", "Ad", "An", "Ap",
279: "Ar", "Cd", "Cm", "Dv",
280: "Er", "Ev", "Ex", "Fa",
281: "Fd", "Fl", "Fn", "Ft",
282: "Ic", "In", "Li", "Nd",
283: "Nm", "Op", "Ot", "Pa",
284: "Rv", "St", "Va", "Vt",
285: "Xr", "%A", "%B", "%D",
286: "%I", "%J", "%N", "%O",
287: "%P", "%R", "%T", "%V",
288: "Ac", "Ao", "Aq", "At",
289: "Bc", "Bf", "Bo", "Bq",
290: "Bsx", "Bx", "Db", "Dc",
291: "Do", "Dq", "Ec", "Ef",
292: "Em", "Eo", "Fx", "Ms",
293: "No", "Ns", "Nx", "Ox",
294: "Pc", "Pf", "Po", "Pq",
295: "Qc", "Ql", "Qo", "Qq",
296: "Re", "Rs", "Sc", "So",
297: "Sq", "Sm", "Sx", "Sy",
298: "Tn", "Ux", "Xc", "Xo",
299: "Fo", "Fc", "Oo", "Oc",
300: "Bk", "Ek", "Bt", "Hf",
301: "Fr", "Ud", "Lb", "Lp",
302: "Lk", "Mt", "Brq", "Bro",
303: "Brc", "%C", "Es", "En",
1.296 schwarze 304: "Dx", "%Q", "sp",
1.298 ! schwarze 305: "%U", "Ta", NULL,
1.294 schwarze 306: "TH", "SH", "SS", "TP",
307: "LP", "PP", "P", "IP",
308: "HP", "SM", "SB", "BI",
309: "IB", "BR", "RB", "R",
310: "B", "I", "IR", "RI",
1.296 schwarze 311: "sp", "nf", "fi",
1.294 schwarze 312: "RE", "RS", "DT", "UC",
1.297 schwarze 313: "PD", "AT", "in",
1.294 schwarze 314: "OP", "EX", "EE", "UR",
1.298 ! schwarze 315: "UE", NULL
1.294 schwarze 316: };
317: const char *const *roff_name = __roff_name;
318:
319: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 320: { roff_br, NULL, NULL, 0 }, /* br */
1.297 schwarze 321: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 ! schwarze 322: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.296 schwarze 323: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 324: { roff_unsupp, NULL, NULL, 0 }, /* ab */
325: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
326: { roff_line_ignore, NULL, NULL, 0 }, /* af */
327: { roff_unsupp, NULL, NULL, 0 }, /* aln */
328: { roff_unsupp, NULL, NULL, 0 }, /* als */
329: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
330: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
331: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
332: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
333: { roff_ds, NULL, NULL, 0 }, /* as */
334: { roff_ds, NULL, NULL, 0 }, /* as1 */
335: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
336: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
337: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
338: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
339: { roff_unsupp, NULL, NULL, 0 }, /* blm */
340: { roff_unsupp, NULL, NULL, 0 }, /* box */
341: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
342: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
343: { roff_unsupp, NULL, NULL, 0 }, /* BP */
344: { roff_unsupp, NULL, NULL, 0 }, /* break */
345: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
346: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 347: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 348: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
349: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
350: { roff_cc, NULL, NULL, 0 }, /* cc */
351: { roff_line_ignore, NULL, NULL, 0 }, /* ce */
352: { roff_insec, NULL, NULL, 0 }, /* cf */
353: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
354: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
355: { roff_unsupp, NULL, NULL, 0 }, /* char */
356: { roff_unsupp, NULL, NULL, 0 }, /* chop */
357: { roff_line_ignore, NULL, NULL, 0 }, /* class */
358: { roff_insec, NULL, NULL, 0 }, /* close */
359: { roff_unsupp, NULL, NULL, 0 }, /* CL */
360: { roff_line_ignore, NULL, NULL, 0 }, /* color */
361: { roff_unsupp, NULL, NULL, 0 }, /* composite */
362: { roff_unsupp, NULL, NULL, 0 }, /* continue */
363: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
364: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
365: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
366: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
367: { roff_unsupp, NULL, NULL, 0 }, /* da */
368: { roff_unsupp, NULL, NULL, 0 }, /* dch */
369: { roff_Dd, NULL, NULL, 0 }, /* Dd */
370: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
371: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
372: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
373: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
374: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
375: { roff_unsupp, NULL, NULL, 0 }, /* device */
376: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
377: { roff_unsupp, NULL, NULL, 0 }, /* di */
378: { roff_unsupp, NULL, NULL, 0 }, /* do */
379: { roff_ds, NULL, NULL, 0 }, /* ds */
380: { roff_ds, NULL, NULL, 0 }, /* ds1 */
381: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
382: { roff_unsupp, NULL, NULL, 0 }, /* dt */
383: { roff_unsupp, NULL, NULL, 0 }, /* ec */
384: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
385: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
386: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
387: { roff_unsupp, NULL, NULL, 0 }, /* em */
388: { roff_EN, NULL, NULL, 0 }, /* EN */
389: { roff_unsupp, NULL, NULL, 0 }, /* eo */
390: { roff_unsupp, NULL, NULL, 0 }, /* EP */
391: { roff_EQ, NULL, NULL, 0 }, /* EQ */
392: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
393: { roff_unsupp, NULL, NULL, 0 }, /* ev */
394: { roff_unsupp, NULL, NULL, 0 }, /* evc */
395: { roff_unsupp, NULL, NULL, 0 }, /* ex */
396: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
397: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
398: { roff_unsupp, NULL, NULL, 0 }, /* fc */
399: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
400: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
401: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
402: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
403: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
404: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
405: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
406: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
407: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
408: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
409: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
410: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
411: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
412: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
413: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
414: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
415: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
416: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
417: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
418: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
419: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
420: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
421: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
422: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
423: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
424: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
425: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
426: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
427: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
428: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
429: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
430: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
431: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
432: { roff_unsupp, NULL, NULL, 0 }, /* index */
433: { roff_it, NULL, NULL, 0 }, /* it */
434: { roff_unsupp, NULL, NULL, 0 }, /* itc */
435: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
436: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
437: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
438: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
439: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
440: { roff_unsupp, NULL, NULL, 0 }, /* lc */
441: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
442: { roff_unsupp, NULL, NULL, 0 }, /* lds */
443: { roff_unsupp, NULL, NULL, 0 }, /* length */
444: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
445: { roff_insec, NULL, NULL, 0 }, /* lf */
446: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
447: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
448: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
449: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
450: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
451: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
452: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
453: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
454: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
455: { roff_line_ignore, NULL, NULL, 0 }, /* mc */
456: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
457: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
458: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
459: { roff_insec, NULL, NULL, 0 }, /* mso */
460: { roff_line_ignore, NULL, NULL, 0 }, /* na */
461: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
462: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
463: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
464: { roff_unsupp, NULL, NULL, 0 }, /* nm */
465: { roff_unsupp, NULL, NULL, 0 }, /* nn */
466: { roff_unsupp, NULL, NULL, 0 }, /* nop */
467: { roff_nr, NULL, NULL, 0 }, /* nr */
468: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
469: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
470: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
471: { roff_insec, NULL, NULL, 0 }, /* nx */
472: { roff_insec, NULL, NULL, 0 }, /* open */
473: { roff_insec, NULL, NULL, 0 }, /* opena */
474: { roff_line_ignore, NULL, NULL, 0 }, /* os */
475: { roff_unsupp, NULL, NULL, 0 }, /* output */
476: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
477: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
478: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
479: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
480: { roff_insec, NULL, NULL, 0 }, /* pi */
481: { roff_unsupp, NULL, NULL, 0 }, /* PI */
482: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
483: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
484: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
485: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
486: { roff_line_ignore, NULL, NULL, 0 }, /* po */
487: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
488: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
489: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
490: { roff_insec, NULL, NULL, 0 }, /* pso */
491: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
492: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
493: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
494: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
495: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
496: { roff_unsupp, NULL, NULL, 0 }, /* return */
497: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
498: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
499: { roff_line_ignore, NULL, NULL, 0 }, /* rj */
500: { roff_rm, NULL, NULL, 0 }, /* rm */
501: { roff_unsupp, NULL, NULL, 0 }, /* rn */
502: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
503: { roff_rr, NULL, NULL, 0 }, /* rr */
504: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
505: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
506: { roff_unsupp, NULL, NULL, 0 }, /* schar */
507: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
508: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
509: { roff_unsupp, NULL, NULL, 0 }, /* shift */
510: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
511: { roff_so, NULL, NULL, 0 }, /* so */
512: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
513: { roff_line_ignore, NULL, NULL, 0 }, /* special */
514: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
515: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
516: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
517: { roff_unsupp, NULL, NULL, 0 }, /* substring */
518: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
519: { roff_insec, NULL, NULL, 0 }, /* sy */
520: { roff_T_, NULL, NULL, 0 }, /* T& */
521: { roff_unsupp, NULL, NULL, 0 }, /* ta */
522: { roff_unsupp, NULL, NULL, 0 }, /* tc */
523: { roff_TE, NULL, NULL, 0 }, /* TE */
524: { roff_TH, NULL, NULL, 0 }, /* TH */
525: { roff_unsupp, NULL, NULL, 0 }, /* ti */
526: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
527: { roff_unsupp, NULL, NULL, 0 }, /* tl */
528: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
529: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
530: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
531: { roff_tr, NULL, NULL, 0 }, /* tr */
532: { roff_line_ignore, NULL, NULL, 0 }, /* track */
533: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
534: { roff_insec, NULL, NULL, 0 }, /* trf */
535: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
536: { roff_unsupp, NULL, NULL, 0 }, /* trin */
537: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
538: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
539: { roff_TS, NULL, NULL, 0 }, /* TS */
540: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
541: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
542: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
543: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
544: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
545: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
546: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
547: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
548: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
549: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
550: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
551: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
552: { roff_unsupp, NULL, NULL, 0 }, /* wh */
553: { roff_unsupp, NULL, NULL, 0 }, /* while */
554: { roff_insec, NULL, NULL, 0 }, /* write */
555: { roff_insec, NULL, NULL, 0 }, /* writec */
556: { roff_insec, NULL, NULL, 0 }, /* writem */
557: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
558: { roff_cblock, NULL, NULL, 0 }, /* . */
559: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 560: };
561:
1.200 schwarze 562: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.175 schwarze 563: const char *const __mdoc_reserved[] = {
564: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
565: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
566: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
567: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.200 schwarze 568: "Dt", "Dv", "Dx", "D1",
569: "Ec", "Ed", "Ef", "Ek", "El", "Em",
570: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.175 schwarze 571: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.200 schwarze 572: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
573: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.175 schwarze 574: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.200 schwarze 575: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
576: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
577: "Sc", "Sh", "Sm", "So", "Sq",
1.175 schwarze 578: "Ss", "St", "Sx", "Sy",
579: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.200 schwarze 580: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.175 schwarze 581: "%P", "%Q", "%R", "%T", "%U", "%V",
582: NULL
583: };
584:
1.200 schwarze 585: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.175 schwarze 586: const char *const __man_reserved[] = {
1.200 schwarze 587: "AT", "B", "BI", "BR", "DT",
588: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
589: "LP", "OP", "P", "PD", "PP",
590: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
591: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.175 schwarze 592: NULL
593: };
594:
1.141 kristaps 595: /* Array of injected predefined strings. */
596: #define PREDEFS_MAX 38
597: static const struct predef predefs[PREDEFS_MAX] = {
598: #include "predefs.in"
599: };
600:
1.178 schwarze 601: static int roffit_lines; /* number of lines to delay */
602: static char *roffit_macro; /* nil-terminated macro line */
603:
1.207 schwarze 604:
1.266 schwarze 605: /* --- request table ------------------------------------------------------ */
606:
1.295 schwarze 607: struct ohash *
608: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 609: {
1.295 schwarze 610: struct ohash *htab;
611: struct roffreq *req;
612: enum roff_tok tok;
613: size_t sz;
614: unsigned int slot;
1.85 kristaps 615:
1.295 schwarze 616: htab = mandoc_malloc(sizeof(*htab));
617: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 618:
1.295 schwarze 619: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 620: if (roff_name[tok] == NULL)
621: continue;
1.295 schwarze 622: sz = strlen(roff_name[tok]);
623: req = mandoc_malloc(sizeof(*req) + sz + 1);
624: req->tok = tok;
625: memcpy(req->name, roff_name[tok], sz + 1);
626: slot = ohash_qlookup(htab, req->name);
627: ohash_insert(htab, slot, req);
1.85 kristaps 628: }
1.295 schwarze 629: return htab;
1.85 kristaps 630: }
631:
1.295 schwarze 632: void
633: roffhash_free(struct ohash *htab)
1.67 kristaps 634: {
1.295 schwarze 635: struct roffreq *req;
636: unsigned int slot;
1.67 kristaps 637:
1.295 schwarze 638: if (htab == NULL)
639: return;
640: for (req = ohash_first(htab, &slot); req != NULL;
641: req = ohash_next(htab, &slot))
642: free(req);
643: ohash_delete(htab);
644: free(htab);
645: }
646:
647: enum roff_tok
648: roffhash_find(struct ohash *htab, const char *name, size_t sz)
649: {
650: struct roffreq *req;
651: const char *end;
652:
653: if (sz) {
654: end = name + sz;
655: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
656: } else
657: req = ohash_find(htab, ohash_qlookup(htab, name));
658: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 659: }
660:
1.266 schwarze 661: /* --- stack of request blocks -------------------------------------------- */
662:
1.67 kristaps 663: /*
664: * Pop the current node off of the stack of roff instructions currently
665: * pending.
666: */
667: static void
668: roffnode_pop(struct roff *r)
669: {
670: struct roffnode *p;
671:
1.75 kristaps 672: assert(r->last);
1.207 schwarze 673: p = r->last;
1.82 kristaps 674:
1.75 kristaps 675: r->last = r->last->parent;
1.106 kristaps 676: free(p->name);
677: free(p->end);
1.67 kristaps 678: free(p);
679: }
680:
681: /*
682: * Push a roff node onto the instruction stack. This must later be
683: * removed with roffnode_pop().
684: */
1.98 schwarze 685: static void
1.294 schwarze 686: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 687: int line, int col)
1.67 kristaps 688: {
689: struct roffnode *p;
690:
1.98 schwarze 691: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 692: p->tok = tok;
1.106 kristaps 693: if (name)
694: p->name = mandoc_strdup(name);
1.67 kristaps 695: p->parent = r->last;
696: p->line = line;
697: p->col = col;
1.198 schwarze 698: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 699:
700: r->last = p;
701: }
702:
1.266 schwarze 703: /* --- roff parser state data management ---------------------------------- */
704:
1.67 kristaps 705: static void
706: roff_free1(struct roff *r)
707: {
1.176 schwarze 708: struct tbl_node *tbl;
1.125 kristaps 709: struct eqn_node *e;
1.167 kristaps 710: int i;
1.67 kristaps 711:
1.176 schwarze 712: while (NULL != (tbl = r->first_tbl)) {
713: r->first_tbl = tbl->next;
714: tbl_free(tbl);
1.109 kristaps 715: }
1.113 kristaps 716: r->first_tbl = r->last_tbl = r->tbl = NULL;
717:
1.125 kristaps 718: while (NULL != (e = r->first_eqn)) {
719: r->first_eqn = e->next;
720: eqn_free(e);
721: }
722: r->first_eqn = r->last_eqn = r->eqn = NULL;
723:
1.67 kristaps 724: while (r->last)
725: roffnode_pop(r);
1.109 kristaps 726:
1.223 schwarze 727: free (r->rstack);
728: r->rstack = NULL;
729: r->rstacksz = 0;
730: r->rstackpos = -1;
731:
732: roff_freereg(r->regtab);
733: r->regtab = NULL;
734:
1.167 kristaps 735: roff_freestr(r->strtab);
736: roff_freestr(r->xmbtab);
737: r->strtab = r->xmbtab = NULL;
738:
739: if (r->xtab)
740: for (i = 0; i < 128; i++)
741: free(r->xtab[i].p);
742: free(r->xtab);
743: r->xtab = NULL;
1.67 kristaps 744: }
745:
746: void
747: roff_reset(struct roff *r)
748: {
749: roff_free1(r);
1.227 schwarze 750: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.174 kristaps 751: r->control = 0;
1.67 kristaps 752: }
753:
754: void
755: roff_free(struct roff *r)
756: {
757: roff_free1(r);
1.295 schwarze 758: roffhash_free(r->reqtab);
1.67 kristaps 759: free(r);
760: }
761:
762: struct roff *
1.279 schwarze 763: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 764: {
765: struct roff *r;
766:
1.98 schwarze 767: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 768: r->parse = parse;
1.295 schwarze 769: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.199 schwarze 770: r->options = options;
1.227 schwarze 771: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 772: r->rstackpos = -1;
1.277 schwarze 773: return r;
1.265 schwarze 774: }
775:
1.266 schwarze 776: /* --- syntax tree state data management ---------------------------------- */
777:
1.265 schwarze 778: static void
779: roff_man_free1(struct roff_man *man)
780: {
781:
1.266 schwarze 782: if (man->first != NULL)
783: roff_node_delete(man, man->first);
1.265 schwarze 784: free(man->meta.msec);
785: free(man->meta.vol);
786: free(man->meta.os);
787: free(man->meta.arch);
788: free(man->meta.title);
789: free(man->meta.name);
790: free(man->meta.date);
791: }
792:
793: static void
794: roff_man_alloc1(struct roff_man *man)
795: {
796:
797: memset(&man->meta, 0, sizeof(man->meta));
798: man->first = mandoc_calloc(1, sizeof(*man->first));
799: man->first->type = ROFFT_ROOT;
800: man->last = man->first;
801: man->last_es = NULL;
802: man->flags = 0;
803: man->macroset = MACROSET_NONE;
804: man->lastsec = man->lastnamed = SEC_NONE;
805: man->next = ROFF_NEXT_CHILD;
806: }
807:
808: void
809: roff_man_reset(struct roff_man *man)
810: {
811:
812: roff_man_free1(man);
813: roff_man_alloc1(man);
814: }
815:
816: void
817: roff_man_free(struct roff_man *man)
818: {
819:
820: roff_man_free1(man);
821: free(man);
822: }
823:
824: struct roff_man *
825: roff_man_alloc(struct roff *roff, struct mparse *parse,
826: const char *defos, int quick)
827: {
828: struct roff_man *man;
829:
830: man = mandoc_calloc(1, sizeof(*man));
831: man->parse = parse;
832: man->roff = roff;
833: man->defos = defos;
834: man->quick = quick;
835: roff_man_alloc1(man);
1.296 schwarze 836: roff->man = man;
1.277 schwarze 837: return man;
1.67 kristaps 838: }
839:
1.266 schwarze 840: /* --- syntax tree handling ----------------------------------------------- */
841:
842: struct roff_node *
843: roff_node_alloc(struct roff_man *man, int line, int pos,
844: enum roff_type type, int tok)
845: {
846: struct roff_node *n;
847:
848: n = mandoc_calloc(1, sizeof(*n));
849: n->line = line;
850: n->pos = pos;
851: n->tok = tok;
852: n->type = type;
853: n->sec = man->lastsec;
854:
855: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 856: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 857: else
1.285 schwarze 858: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 859: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 860: n->flags |= NODE_LINE;
1.266 schwarze 861: man->flags &= ~MDOC_NEWLINE;
862:
1.277 schwarze 863: return n;
1.266 schwarze 864: }
865:
866: void
867: roff_node_append(struct roff_man *man, struct roff_node *n)
868: {
869:
870: switch (man->next) {
871: case ROFF_NEXT_SIBLING:
1.281 schwarze 872: if (man->last->next != NULL) {
873: n->next = man->last->next;
874: man->last->next->prev = n;
875: } else
876: man->last->parent->last = n;
1.266 schwarze 877: man->last->next = n;
878: n->prev = man->last;
879: n->parent = man->last->parent;
880: break;
881: case ROFF_NEXT_CHILD:
1.287 schwarze 882: if (man->last->child != NULL) {
883: n->next = man->last->child;
884: man->last->child->prev = n;
885: } else
886: man->last->last = n;
1.266 schwarze 887: man->last->child = n;
888: n->parent = man->last;
889: break;
890: default:
891: abort();
892: }
1.282 schwarze 893: man->last = n;
1.266 schwarze 894:
895: switch (n->type) {
896: case ROFFT_HEAD:
897: n->parent->head = n;
898: break;
899: case ROFFT_BODY:
1.282 schwarze 900: if (n->end != ENDBODY_NOT)
901: return;
1.266 schwarze 902: n->parent->body = n;
903: break;
904: case ROFFT_TAIL:
905: n->parent->tail = n;
906: break;
907: default:
1.282 schwarze 908: return;
1.266 schwarze 909: }
1.282 schwarze 910:
911: /*
912: * Copy over the normalised-data pointer of our parent. Not
913: * everybody has one, but copying a null pointer is fine.
914: */
915:
916: n->norm = n->parent->norm;
917: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 918: }
919:
1.267 schwarze 920: void
921: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
922: {
923: struct roff_node *n;
924:
925: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
926: n->string = roff_strdup(man->roff, word);
927: roff_node_append(man, n);
1.286 schwarze 928: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 929: man->next = ROFF_NEXT_SIBLING;
930: }
931:
932: void
933: roff_word_append(struct roff_man *man, const char *word)
934: {
935: struct roff_node *n;
936: char *addstr, *newstr;
937:
938: n = man->last;
939: addstr = roff_strdup(man->roff, word);
940: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
941: free(addstr);
942: free(n->string);
943: n->string = newstr;
944: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 945: }
946:
947: void
948: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
949: {
950: struct roff_node *n;
951:
952: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
953: roff_node_append(man, n);
954: man->next = ROFF_NEXT_CHILD;
955: }
956:
957: struct roff_node *
958: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
959: {
960: struct roff_node *n;
961:
962: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
963: roff_node_append(man, n);
964: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 965: return n;
1.267 schwarze 966: }
967:
1.266 schwarze 968: struct roff_node *
969: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
970: {
971: struct roff_node *n;
972:
973: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
974: roff_node_append(man, n);
975: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 976: return n;
1.266 schwarze 977: }
978:
979: struct roff_node *
980: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
981: {
982: struct roff_node *n;
983:
984: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
985: roff_node_append(man, n);
986: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 987: return n;
1.267 schwarze 988: }
989:
990: void
991: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
992: {
993: struct roff_node *n;
994:
995: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
996: n->eqn = eqn;
997: if (eqn->ln > man->last->line)
1.285 schwarze 998: n->flags |= NODE_LINE;
1.267 schwarze 999: roff_node_append(man, n);
1000: man->next = ROFF_NEXT_SIBLING;
1001: }
1002:
1003: void
1004: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1005: {
1006: struct roff_node *n;
1007:
1008: if (man->macroset == MACROSET_MAN)
1009: man_breakscope(man, TOKEN_NONE);
1010: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1011: n->span = tbl;
1012: roff_node_append(man, n);
1.286 schwarze 1013: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 1014: man->next = ROFF_NEXT_SIBLING;
1.266 schwarze 1015: }
1016:
1017: void
1018: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1019: {
1020:
1021: /* Adjust siblings. */
1022:
1023: if (n->prev)
1024: n->prev->next = n->next;
1025: if (n->next)
1026: n->next->prev = n->prev;
1027:
1028: /* Adjust parent. */
1029:
1030: if (n->parent != NULL) {
1031: if (n->parent->child == n)
1032: n->parent->child = n->next;
1033: if (n->parent->last == n)
1034: n->parent->last = n->prev;
1035: }
1036:
1037: /* Adjust parse point. */
1038:
1039: if (man == NULL)
1040: return;
1041: if (man->last == n) {
1042: if (n->prev == NULL) {
1043: man->last = n->parent;
1044: man->next = ROFF_NEXT_CHILD;
1045: } else {
1046: man->last = n->prev;
1047: man->next = ROFF_NEXT_SIBLING;
1048: }
1049: }
1050: if (man->first == n)
1051: man->first = NULL;
1052: }
1053:
1054: void
1055: roff_node_free(struct roff_node *n)
1056: {
1057:
1058: if (n->args != NULL)
1059: mdoc_argv_free(n->args);
1060: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1061: free(n->norm);
1062: free(n->string);
1063: free(n);
1064: }
1065:
1066: void
1067: roff_node_delete(struct roff_man *man, struct roff_node *n)
1068: {
1069:
1070: while (n->child != NULL)
1071: roff_node_delete(man, n->child);
1072: roff_node_unlink(man, n);
1073: roff_node_free(n);
1.269 schwarze 1074: }
1075:
1076: void
1077: deroff(char **dest, const struct roff_node *n)
1078: {
1079: char *cp;
1080: size_t sz;
1081:
1082: if (n->type != ROFFT_TEXT) {
1083: for (n = n->child; n != NULL; n = n->next)
1084: deroff(dest, n);
1085: return;
1086: }
1087:
1.288 schwarze 1088: /* Skip leading whitespace. */
1.269 schwarze 1089:
1.288 schwarze 1090: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1091: if (cp[0] == '\\' && cp[1] != '\0' &&
1092: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1093: cp++;
1.288 schwarze 1094: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1095: break;
1096: }
1097:
1.289 schwarze 1098: /* Skip trailing backslash. */
1099:
1100: sz = strlen(cp);
1.290 schwarze 1101: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1102: sz--;
1103:
1.269 schwarze 1104: /* Skip trailing whitespace. */
1105:
1.289 schwarze 1106: for (; sz; sz--)
1.269 schwarze 1107: if ( ! isspace((unsigned char)cp[sz-1]))
1108: break;
1109:
1110: /* Skip empty strings. */
1111:
1112: if (sz == 0)
1113: return;
1114:
1115: if (*dest == NULL) {
1116: *dest = mandoc_strndup(cp, sz);
1117: return;
1118: }
1119:
1120: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1121: free(*dest);
1122: *dest = cp;
1.266 schwarze 1123: }
1124:
1125: /* --- main functions of the roff parser ---------------------------------- */
1126:
1.94 kristaps 1127: /*
1.206 schwarze 1128: * In the current line, expand escape sequences that tend to get
1129: * used in numerical expressions and conditional requests.
1130: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1131: */
1.172 schwarze 1132: static enum rofferr
1.238 schwarze 1133: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1134: {
1.208 schwarze 1135: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1136: const char *start; /* start of the string to process */
1.209 schwarze 1137: char *stesc; /* start of an escape sequence ('\\') */
1.108 schwarze 1138: const char *stnam; /* start of the name, after "[(*" */
1139: const char *cp; /* end of the name, e.g. before ']' */
1140: const char *res; /* the string to be substituted */
1.238 schwarze 1141: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1142: size_t maxl; /* expected length of the escape name */
1143: size_t naml; /* actual length of the escape name */
1.237 schwarze 1144: enum mandoc_esc esc; /* type of the escape sequence */
1145: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1146: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1147: int npos; /* position in numeric expression */
1.218 schwarze 1148: int arg_complete; /* argument not interrupted by eol */
1.206 schwarze 1149: char term; /* character terminating the escape */
1.94 kristaps 1150:
1.170 schwarze 1151: expand_count = 0;
1.238 schwarze 1152: start = buf->buf + pos;
1.205 schwarze 1153: stesc = strchr(start, '\0') - 1;
1154: while (stesc-- > start) {
1.170 schwarze 1155:
1.205 schwarze 1156: /* Search backwards for the next backslash. */
1157:
1.238 schwarze 1158: if (*stesc != '\\')
1.205 schwarze 1159: continue;
1160:
1161: /* If it is escaped, skip it. */
1162:
1163: for (cp = stesc - 1; cp >= start; cp--)
1.238 schwarze 1164: if (*cp != '\\')
1.205 schwarze 1165: break;
1166:
1.238 schwarze 1167: if ((stesc - cp) % 2 == 0) {
1.209 schwarze 1168: stesc = (char *)cp;
1.205 schwarze 1169: continue;
1170: }
1.108 schwarze 1171:
1.206 schwarze 1172: /* Decide whether to expand or to check only. */
1.108 schwarze 1173:
1.206 schwarze 1174: term = '\0';
1.205 schwarze 1175: cp = stesc + 1;
1.181 schwarze 1176: switch (*cp) {
1.207 schwarze 1177: case '*':
1.181 schwarze 1178: res = NULL;
1179: break;
1.207 schwarze 1180: case 'B':
1181: case 'w':
1.206 schwarze 1182: term = cp[1];
1183: /* FALLTHROUGH */
1.207 schwarze 1184: case 'n':
1.181 schwarze 1185: res = ubuf;
1186: break;
1187: default:
1.237 schwarze 1188: esc = mandoc_escape(&cp, &stnam, &inaml);
1189: if (esc == ESCAPE_ERROR ||
1190: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1191: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1192: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1193: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1194: "%.*s", (int)(cp - stesc), stesc);
1.205 schwarze 1195: continue;
1.152 kristaps 1196: }
1197:
1.205 schwarze 1198: if (EXPAND_LIMIT < ++expand_count) {
1199: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1200: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1201: return ROFF_IGN;
1.205 schwarze 1202: }
1.108 schwarze 1203:
1204: /*
1205: * The third character decides the length
1.181 schwarze 1206: * of the name of the string or register.
1.108 schwarze 1207: * Save a pointer to the name.
1208: */
1209:
1.238 schwarze 1210: if (term == '\0') {
1.206 schwarze 1211: switch (*++cp) {
1.207 schwarze 1212: case '\0':
1.206 schwarze 1213: maxl = 0;
1214: break;
1.207 schwarze 1215: case '(':
1.206 schwarze 1216: cp++;
1217: maxl = 2;
1218: break;
1.207 schwarze 1219: case '[':
1.206 schwarze 1220: cp++;
1221: term = ']';
1222: maxl = 0;
1223: break;
1224: default:
1225: maxl = 1;
1226: break;
1227: }
1228: } else {
1229: cp += 2;
1.94 kristaps 1230: maxl = 0;
1231: }
1.108 schwarze 1232: stnam = cp;
1.94 kristaps 1233:
1.108 schwarze 1234: /* Advance to the end of the name. */
1.94 kristaps 1235:
1.253 schwarze 1236: naml = 0;
1.218 schwarze 1237: arg_complete = 1;
1.253 schwarze 1238: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1239: if (*cp == '\0') {
1.219 schwarze 1240: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1241: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1242: arg_complete = 0;
1.206 schwarze 1243: break;
1.153 kristaps 1244: }
1.238 schwarze 1245: if (maxl == 0 && *cp == term) {
1.206 schwarze 1246: cp++;
1.253 schwarze 1247: break;
1248: }
1249: if (*cp++ != '\\' || stesc[1] != 'w') {
1250: naml++;
1251: continue;
1252: }
1253: switch (mandoc_escape(&cp, NULL, NULL)) {
1254: case ESCAPE_SPECIAL:
1255: case ESCAPE_UNICODE:
1256: case ESCAPE_NUMBERED:
1257: case ESCAPE_OVERSTRIKE:
1258: naml++;
1259: break;
1260: default:
1.94 kristaps 1261: break;
1.206 schwarze 1262: }
1.94 kristaps 1263: }
1264:
1.108 schwarze 1265: /*
1266: * Retrieve the replacement string; if it is
1267: * undefined, resume searching for escapes.
1268: */
1269:
1.206 schwarze 1270: switch (stesc[1]) {
1.207 schwarze 1271: case '*':
1.218 schwarze 1272: if (arg_complete)
1273: res = roff_getstrn(r, stnam, naml);
1.206 schwarze 1274: break;
1.207 schwarze 1275: case 'B':
1.206 schwarze 1276: npos = 0;
1.218 schwarze 1277: ubuf[0] = arg_complete &&
1.261 schwarze 1278: roff_evalnum(r, ln, stnam, &npos,
1279: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1280: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1281: ubuf[1] = '\0';
1282: break;
1.207 schwarze 1283: case 'n':
1.218 schwarze 1284: if (arg_complete)
1285: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1286: roff_getregn(r, stnam, naml));
1287: else
1288: ubuf[0] = '\0';
1.206 schwarze 1289: break;
1.207 schwarze 1290: case 'w':
1.218 schwarze 1291: /* use even incomplete args */
1.208 schwarze 1292: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1293: 24 * (int)naml);
1294: break;
1295: }
1.94 kristaps 1296:
1.238 schwarze 1297: if (res == NULL) {
1.219 schwarze 1298: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1299: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1300: "%.*s", (int)naml, stnam);
1.142 kristaps 1301: res = "";
1.246 schwarze 1302: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1303: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1304: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1305: return ROFF_IGN;
1.94 kristaps 1306: }
1307:
1.108 schwarze 1308: /* Replace the escape sequence by the string. */
1309:
1.209 schwarze 1310: *stesc = '\0';
1.238 schwarze 1311: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1312: buf->buf, res, cp) + 1;
1.94 kristaps 1313:
1.205 schwarze 1314: /* Prepare for the next replacement. */
1.94 kristaps 1315:
1.205 schwarze 1316: start = nbuf + pos;
1.238 schwarze 1317: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1318: free(buf->buf);
1319: buf->buf = nbuf;
1.154 kristaps 1320: }
1.277 schwarze 1321: return ROFF_CONT;
1.154 kristaps 1322: }
1323:
1324: /*
1.275 schwarze 1325: * Process text streams.
1.154 kristaps 1326: */
1327: static enum rofferr
1.238 schwarze 1328: roff_parsetext(struct buf *buf, int pos, int *offs)
1.154 kristaps 1329: {
1330: size_t sz;
1331: const char *start;
1.178 schwarze 1332: char *p;
1333: int isz;
1.154 kristaps 1334: enum mandoc_esc esc;
1335:
1.275 schwarze 1336: /* Spring the input line trap. */
1337:
1338: if (roffit_lines == 1) {
1339: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1340: free(buf->buf);
1341: buf->buf = p;
1342: buf->sz = isz + 1;
1343: *offs = 0;
1344: free(roffit_macro);
1345: roffit_lines = 0;
1.277 schwarze 1346: return ROFF_REPARSE;
1.275 schwarze 1347: } else if (roffit_lines > 1)
1348: --roffit_lines;
1349:
1350: /* Convert all breakable hyphens into ASCII_HYPH. */
1351:
1.238 schwarze 1352: start = p = buf->buf + pos;
1.154 kristaps 1353:
1.238 schwarze 1354: while (*p != '\0') {
1.154 kristaps 1355: sz = strcspn(p, "-\\");
1356: p += sz;
1357:
1.238 schwarze 1358: if (*p == '\0')
1.159 kristaps 1359: break;
1360:
1.238 schwarze 1361: if (*p == '\\') {
1.154 kristaps 1362: /* Skip over escapes. */
1363: p++;
1.189 schwarze 1364: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1365: if (esc == ESCAPE_ERROR)
1.154 kristaps 1366: break;
1.264 schwarze 1367: while (*p == '-')
1368: p++;
1.155 kristaps 1369: continue;
1.159 kristaps 1370: } else if (p == start) {
1.158 kristaps 1371: p++;
1.155 kristaps 1372: continue;
1.158 kristaps 1373: }
1.155 kristaps 1374:
1.171 schwarze 1375: if (isalpha((unsigned char)p[-1]) &&
1376: isalpha((unsigned char)p[1]))
1.155 kristaps 1377: *p = ASCII_HYPH;
1378: p++;
1.94 kristaps 1379: }
1.277 schwarze 1380: return ROFF_CONT;
1.94 kristaps 1381: }
1382:
1.67 kristaps 1383: enum rofferr
1.238 schwarze 1384: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1385: {
1.294 schwarze 1386: enum roff_tok t;
1.109 kristaps 1387: enum rofferr e;
1.238 schwarze 1388: int pos; /* parse point */
1.243 schwarze 1389: int spos; /* saved parse point for messages */
1.238 schwarze 1390: int ppos; /* original offset in buf->buf */
1391: int ctl; /* macro line (boolean) */
1392:
1393: ppos = pos = *offs;
1.79 kristaps 1394:
1.230 schwarze 1395: /* Handle in-line equation delimiters. */
1396:
1.236 schwarze 1397: if (r->tbl == NULL &&
1398: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1399: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1400: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1401: if (e == ROFF_REPARSE)
1.277 schwarze 1402: return e;
1.230 schwarze 1403: assert(e == ROFF_CONT);
1404: }
1405:
1406: /* Expand some escape sequences. */
1.94 kristaps 1407:
1.238 schwarze 1408: e = roff_res(r, buf, ln, pos);
1409: if (e == ROFF_IGN)
1.277 schwarze 1410: return e;
1.238 schwarze 1411: assert(e == ROFF_CONT);
1.94 kristaps 1412:
1.238 schwarze 1413: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1414:
1.94 kristaps 1415: /*
1.79 kristaps 1416: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1417: * text through the macro's filter.
1418: * Equations process all content themselves.
1419: * Tables process almost all content themselves, but we want
1420: * to warn about macros before passing it there.
1.79 kristaps 1421: */
1.74 kristaps 1422:
1.252 schwarze 1423: if (r->last != NULL && ! ctl) {
1.78 kristaps 1424: t = r->last->tok;
1.238 schwarze 1425: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1426: if (e == ROFF_IGN)
1.277 schwarze 1427: return e;
1.294 schwarze 1428: assert(e == ROFF_CONT);
1.182 schwarze 1429: }
1.252 schwarze 1430: if (r->eqn != NULL)
1.277 schwarze 1431: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.252 schwarze 1432: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.277 schwarze 1433: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.252 schwarze 1434: if ( ! ctl)
1.277 schwarze 1435: return roff_parsetext(buf, pos, offs);
1.228 schwarze 1436:
1437: /* Skip empty request lines. */
1438:
1.238 schwarze 1439: if (buf->buf[pos] == '"') {
1.228 schwarze 1440: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1441: ln, pos, NULL);
1.277 schwarze 1442: return ROFF_IGN;
1.238 schwarze 1443: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1444: return ROFF_IGN;
1.67 kristaps 1445:
1.79 kristaps 1446: /*
1447: * If a scope is open, go to the child handler for that macro,
1448: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1449: * Don't do so if an equation is open.
1.79 kristaps 1450: */
1.78 kristaps 1451:
1.79 kristaps 1452: if (r->last) {
1453: t = r->last->tok;
1.277 schwarze 1454: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1455: }
1.78 kristaps 1456:
1.243 schwarze 1457: /* No scope is open. This is a new request or macro. */
1458:
1459: spos = pos;
1460: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1461:
1462: /* Tables ignore most macros. */
1463:
1.294 schwarze 1464: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS)) {
1.243 schwarze 1465: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1466: ln, pos, buf->buf + spos);
1.257 schwarze 1467: if (t == ROFF_TS)
1.277 schwarze 1468: return ROFF_IGN;
1.257 schwarze 1469: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1470: pos++;
1.291 schwarze 1471: while (buf->buf[pos] == ' ')
1.257 schwarze 1472: pos++;
1.277 schwarze 1473: return tbl_read(r->tbl, ln, buf->buf, pos);
1.243 schwarze 1474: }
1475:
1.79 kristaps 1476: /*
1.243 schwarze 1477: * This is neither a roff request nor a user-defined macro.
1478: * Let the standard macro set parsers handle it.
1.79 kristaps 1479: */
1.67 kristaps 1480:
1.294 schwarze 1481: if (t == TOKEN_NONE)
1.277 schwarze 1482: return ROFF_CONT;
1.243 schwarze 1483:
1484: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1485:
1.296 schwarze 1486: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1487: }
1488:
1.117 kristaps 1489: void
1.74 kristaps 1490: roff_endparse(struct roff *r)
1491: {
1492:
1.110 kristaps 1493: if (r->last)
1.221 schwarze 1494: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1495: r->last->line, r->last->col,
1.295 schwarze 1496: roff_name[r->last->tok]);
1.117 kristaps 1497:
1.125 kristaps 1498: if (r->eqn) {
1.221 schwarze 1499: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1500: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.151 kristaps 1501: eqn_end(&r->eqn);
1.125 kristaps 1502: }
1503:
1.117 kristaps 1504: if (r->tbl) {
1.221 schwarze 1505: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1506: r->tbl->line, r->tbl->pos, "TS");
1.151 kristaps 1507: tbl_end(&r->tbl);
1.117 kristaps 1508: }
1.67 kristaps 1509: }
1510:
1511: /*
1512: * Parse a roff node's type from the input buffer. This must be in the
1513: * form of ".foo xxx" in the usual way.
1514: */
1.294 schwarze 1515: static enum roff_tok
1.214 schwarze 1516: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1517: {
1.214 schwarze 1518: char *cp;
1.106 kristaps 1519: const char *mac;
1520: size_t maclen;
1.294 schwarze 1521: enum roff_tok t;
1.67 kristaps 1522:
1.214 schwarze 1523: cp = buf + *pos;
1524:
1525: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1526: return TOKEN_NONE;
1.67 kristaps 1527:
1.214 schwarze 1528: mac = cp;
1529: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1530:
1.106 kristaps 1531: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.295 schwarze 1532: ? ROFF_USERDEF : roffhash_find(r->reqtab, mac, maclen);
1.67 kristaps 1533:
1.294 schwarze 1534: if (t != TOKEN_NONE)
1.214 schwarze 1535: *pos = cp - buf;
1.67 kristaps 1536:
1.277 schwarze 1537: return t;
1.67 kristaps 1538: }
1539:
1.266 schwarze 1540: /* --- handling of request blocks ----------------------------------------- */
1541:
1.67 kristaps 1542: static enum rofferr
1.76 kristaps 1543: roff_cblock(ROFF_ARGS)
1.67 kristaps 1544: {
1545:
1.79 kristaps 1546: /*
1547: * A block-close `..' should only be invoked as a child of an
1548: * ignore macro, otherwise raise a warning and just ignore it.
1549: */
1550:
1.238 schwarze 1551: if (r->last == NULL) {
1.221 schwarze 1552: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1553: ln, ppos, "..");
1.277 schwarze 1554: return ROFF_IGN;
1.76 kristaps 1555: }
1.67 kristaps 1556:
1.81 kristaps 1557: switch (r->last->tok) {
1.207 schwarze 1558: case ROFF_am:
1.220 schwarze 1559: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1560: case ROFF_ami:
1561: case ROFF_de:
1.108 schwarze 1562: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1563: case ROFF_dei:
1564: case ROFF_ig:
1.81 kristaps 1565: break;
1566: default:
1.221 schwarze 1567: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1568: ln, ppos, "..");
1.277 schwarze 1569: return ROFF_IGN;
1.76 kristaps 1570: }
1.67 kristaps 1571:
1.238 schwarze 1572: if (buf->buf[pos] != '\0')
1.217 schwarze 1573: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1574: ".. %s", buf->buf + pos);
1.71 kristaps 1575:
1576: roffnode_pop(r);
1.76 kristaps 1577: roffnode_cleanscope(r);
1.277 schwarze 1578: return ROFF_IGN;
1.71 kristaps 1579:
1.67 kristaps 1580: }
1581:
1.76 kristaps 1582: static void
1583: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1584: {
1585:
1.76 kristaps 1586: while (r->last) {
1.173 schwarze 1587: if (--r->last->endspan != 0)
1.76 kristaps 1588: break;
1589: roffnode_pop(r);
1590: }
1.67 kristaps 1591: }
1592:
1.195 schwarze 1593: static void
1594: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1595: {
1596:
1.76 kristaps 1597: if (NULL == r->last) {
1.221 schwarze 1598: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1599: ln, ppos, "\\}");
1.195 schwarze 1600: return;
1.76 kristaps 1601: }
1602:
1.82 kristaps 1603: switch (r->last->tok) {
1.207 schwarze 1604: case ROFF_el:
1605: case ROFF_ie:
1606: case ROFF_if:
1.82 kristaps 1607: break;
1608: default:
1.221 schwarze 1609: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1610: ln, ppos, "\\}");
1.195 schwarze 1611: return;
1.75 kristaps 1612: }
1613:
1.76 kristaps 1614: if (r->last->endspan > -1) {
1.221 schwarze 1615: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1616: ln, ppos, "\\}");
1.195 schwarze 1617: return;
1.76 kristaps 1618: }
1619:
1.75 kristaps 1620: roffnode_pop(r);
1.76 kristaps 1621: roffnode_cleanscope(r);
1.195 schwarze 1622: return;
1.76 kristaps 1623: }
1624:
1625: static enum rofferr
1.80 kristaps 1626: roff_block(ROFF_ARGS)
1.76 kristaps 1627: {
1.220 schwarze 1628: const char *name;
1629: char *iname, *cp;
1.213 schwarze 1630: size_t namesz;
1.106 kristaps 1631:
1.220 schwarze 1632: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1633:
1.238 schwarze 1634: if (tok == ROFF_de1)
1.220 schwarze 1635: tok = ROFF_de;
1.251 schwarze 1636: else if (tok == ROFF_dei1)
1637: tok = ROFF_dei;
1.238 schwarze 1638: else if (tok == ROFF_am1)
1.220 schwarze 1639: tok = ROFF_am;
1.251 schwarze 1640: else if (tok == ROFF_ami1)
1641: tok = ROFF_ami;
1.220 schwarze 1642:
1643: /* Parse the macro name argument. */
1644:
1.238 schwarze 1645: cp = buf->buf + pos;
1646: if (tok == ROFF_ig) {
1.220 schwarze 1647: iname = NULL;
1648: namesz = 0;
1649: } else {
1650: iname = cp;
1651: namesz = roff_getname(r, &cp, ln, ppos);
1652: iname[namesz] = '\0';
1653: }
1.107 kristaps 1654:
1.220 schwarze 1655: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1656:
1.238 schwarze 1657: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1658: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1659: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1660: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1661: "%.*s", (int)namesz, iname);
1662: namesz = 0;
1663: } else
1664: namesz = strlen(name);
1665: } else
1666: name = iname;
1.107 kristaps 1667:
1.238 schwarze 1668: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1669: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1670: ln, ppos, roff_name[tok]);
1.277 schwarze 1671: return ROFF_IGN;
1.220 schwarze 1672: }
1.80 kristaps 1673:
1.106 kristaps 1674: roffnode_push(r, tok, name, ln, ppos);
1675:
1676: /*
1677: * At the beginning of a `de' macro, clear the existing string
1678: * with the same name, if there is one. New content will be
1.193 schwarze 1679: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1680: */
1.107 kristaps 1681:
1.238 schwarze 1682: if (tok == ROFF_de || tok == ROFF_dei)
1.213 schwarze 1683: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.76 kristaps 1684:
1.238 schwarze 1685: if (*cp == '\0')
1.277 schwarze 1686: return ROFF_IGN;
1.78 kristaps 1687:
1.220 schwarze 1688: /* Get the custom end marker. */
1.107 kristaps 1689:
1.220 schwarze 1690: iname = cp;
1.213 schwarze 1691: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1692:
1693: /* Resolve the end marker if it is indirect. */
1694:
1.238 schwarze 1695: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1696: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1697: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1698: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1699: "%.*s", (int)namesz, iname);
1700: namesz = 0;
1701: } else
1702: namesz = strlen(name);
1703: } else
1704: name = iname;
1705:
1.213 schwarze 1706: if (namesz)
1707: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1708:
1.238 schwarze 1709: if (*cp != '\0')
1.217 schwarze 1710: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 1711: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 1712:
1.277 schwarze 1713: return ROFF_IGN;
1.78 kristaps 1714: }
1715:
1716: static enum rofferr
1.80 kristaps 1717: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1718: {
1.294 schwarze 1719: enum roff_tok t;
1.79 kristaps 1720: int i, j;
1721:
1722: /*
1723: * First check whether a custom macro exists at this level. If
1724: * it does, then check against it. This is some of groff's
1725: * stranger behaviours. If we encountered a custom end-scope
1726: * tag and that tag also happens to be a "real" macro, then we
1727: * need to try interpreting it again as a real macro. If it's
1728: * not, then return ignore. Else continue.
1729: */
1730:
1731: if (r->last->end) {
1.130 kristaps 1732: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1733: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1734: break;
1735:
1.238 schwarze 1736: if (r->last->end[j] == '\0' &&
1737: (buf->buf[i] == '\0' ||
1738: buf->buf[i] == ' ' ||
1739: buf->buf[i] == '\t')) {
1.79 kristaps 1740: roffnode_pop(r);
1741: roffnode_cleanscope(r);
1742:
1.238 schwarze 1743: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1744: i++;
1745:
1746: pos = i;
1.238 schwarze 1747: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 1748: TOKEN_NONE)
1.277 schwarze 1749: return ROFF_RERUN;
1750: return ROFF_IGN;
1.79 kristaps 1751: }
1752: }
1753:
1754: /*
1755: * If we have no custom end-query or lookup failed, then try
1756: * pulling it out of the hashtable.
1757: */
1758:
1.238 schwarze 1759: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1760:
1.238 schwarze 1761: if (t != ROFF_cblock) {
1762: if (tok != ROFF_ig)
1763: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1764: return ROFF_IGN;
1.106 kristaps 1765: }
1.79 kristaps 1766:
1.277 schwarze 1767: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1768: }
1769:
1770: static enum rofferr
1.80 kristaps 1771: roff_block_text(ROFF_ARGS)
1.78 kristaps 1772: {
1773:
1.238 schwarze 1774: if (tok != ROFF_ig)
1775: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1776:
1.277 schwarze 1777: return ROFF_IGN;
1.78 kristaps 1778: }
1779:
1780: static enum rofferr
1.82 kristaps 1781: roff_cond_sub(ROFF_ARGS)
1782: {
1.294 schwarze 1783: enum roff_tok t;
1.139 kristaps 1784: char *ep;
1.198 schwarze 1785: int rr;
1.82 kristaps 1786:
1787: rr = r->last->rule;
1.139 kristaps 1788: roffnode_cleanscope(r);
1.238 schwarze 1789: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.82 kristaps 1790:
1.139 kristaps 1791: /*
1.177 schwarze 1792: * Fully handle known macros when they are structurally
1793: * required or when the conditional evaluated to true.
1.87 kristaps 1794: */
1795:
1.294 schwarze 1796: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.277 schwarze 1797: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.144 kristaps 1798:
1.196 schwarze 1799: /*
1800: * If `\}' occurs on a macro line without a preceding macro,
1801: * drop the line completely.
1802: */
1803:
1.238 schwarze 1804: ep = buf->buf + pos;
1805: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1806: rr = 0;
1.196 schwarze 1807:
1.177 schwarze 1808: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1809:
1.238 schwarze 1810: while ((ep = strchr(ep, '\\')) != NULL) {
1811: if (*(++ep) == '}') {
1.197 schwarze 1812: *ep = '&';
1.238 schwarze 1813: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1814: }
1.247 schwarze 1815: if (*ep != '\0')
1816: ++ep;
1.177 schwarze 1817: }
1.277 schwarze 1818: return rr ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 1819: }
1820:
1821: static enum rofferr
1822: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1823: {
1.140 kristaps 1824: char *ep;
1.198 schwarze 1825: int rr;
1.82 kristaps 1826:
1827: rr = r->last->rule;
1.140 kristaps 1828: roffnode_cleanscope(r);
1.82 kristaps 1829:
1.238 schwarze 1830: ep = buf->buf + pos;
1831: while ((ep = strchr(ep, '\\')) != NULL) {
1832: if (*(++ep) == '}') {
1.197 schwarze 1833: *ep = '&';
1.238 schwarze 1834: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1835: }
1.247 schwarze 1836: if (*ep != '\0')
1837: ++ep;
1.78 kristaps 1838: }
1.277 schwarze 1839: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 1840: }
1841:
1.266 schwarze 1842: /* --- handling of numeric and conditional expressions -------------------- */
1843:
1.204 schwarze 1844: /*
1845: * Parse a single signed integer number. Stop at the first non-digit.
1846: * If there is at least one digit, return success and advance the
1847: * parse point, else return failure and let the parse point unchanged.
1848: * Ignore overflows, treat them just like the C language.
1849: */
1.184 schwarze 1850: static int
1.261 schwarze 1851: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 1852: {
1.261 schwarze 1853: int myres, scaled, n, p;
1.206 schwarze 1854:
1855: if (NULL == res)
1856: res = &myres;
1.184 schwarze 1857:
1858: p = *pos;
1859: n = v[p] == '-';
1.261 schwarze 1860: if (n || v[p] == '+')
1.184 schwarze 1861: p++;
1862:
1.261 schwarze 1863: if (flags & ROFFNUM_WHITE)
1864: while (isspace((unsigned char)v[p]))
1865: p++;
1866:
1.184 schwarze 1867: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 1868: *res = 10 * *res + v[p] - '0';
1.184 schwarze 1869: if (p == *pos + n)
1870: return 0;
1871:
1872: if (n)
1873: *res = -*res;
1874:
1.254 schwarze 1875: /* Each number may be followed by one optional scaling unit. */
1876:
1877: switch (v[p]) {
1878: case 'f':
1.261 schwarze 1879: scaled = *res * 65536;
1.254 schwarze 1880: break;
1881: case 'i':
1.261 schwarze 1882: scaled = *res * 240;
1.254 schwarze 1883: break;
1884: case 'c':
1.261 schwarze 1885: scaled = *res * 240 / 2.54;
1.254 schwarze 1886: break;
1887: case 'v':
1888: case 'P':
1.261 schwarze 1889: scaled = *res * 40;
1.254 schwarze 1890: break;
1891: case 'm':
1892: case 'n':
1.261 schwarze 1893: scaled = *res * 24;
1.254 schwarze 1894: break;
1895: case 'p':
1.261 schwarze 1896: scaled = *res * 10 / 3;
1.254 schwarze 1897: break;
1898: case 'u':
1.261 schwarze 1899: scaled = *res;
1.254 schwarze 1900: break;
1901: case 'M':
1.261 schwarze 1902: scaled = *res * 6 / 25;
1.254 schwarze 1903: break;
1904: default:
1.261 schwarze 1905: scaled = *res;
1.254 schwarze 1906: p--;
1907: break;
1908: }
1.261 schwarze 1909: if (flags & ROFFNUM_SCALE)
1910: *res = scaled;
1.254 schwarze 1911:
1912: *pos = p + 1;
1.277 schwarze 1913: return 1;
1.184 schwarze 1914: }
1915:
1.198 schwarze 1916: /*
1917: * Evaluate a string comparison condition.
1918: * The first character is the delimiter.
1919: * Succeed if the string up to its second occurrence
1920: * matches the string up to its third occurence.
1921: * Advance the cursor after the third occurrence
1922: * or lacking that, to the end of the line.
1923: */
1924: static int
1925: roff_evalstrcond(const char *v, int *pos)
1926: {
1927: const char *s1, *s2, *s3;
1928: int match;
1929:
1930: match = 0;
1931: s1 = v + *pos; /* initial delimiter */
1932: s2 = s1 + 1; /* for scanning the first string */
1933: s3 = strchr(s2, *s1); /* for scanning the second string */
1934:
1935: if (NULL == s3) /* found no middle delimiter */
1936: goto out;
1937:
1938: while ('\0' != *++s3) {
1939: if (*s2 != *s3) { /* mismatch */
1940: s3 = strchr(s3, *s1);
1941: break;
1942: }
1943: if (*s3 == *s1) { /* found the final delimiter */
1944: match = 1;
1945: break;
1946: }
1947: s2++;
1948: }
1949:
1950: out:
1951: if (NULL == s3)
1952: s3 = strchr(s2, '\0');
1.242 schwarze 1953: else if (*s3 != '\0')
1.198 schwarze 1954: s3++;
1955: *pos = s3 - v;
1.277 schwarze 1956: return match;
1.198 schwarze 1957: }
1958:
1.204 schwarze 1959: /*
1960: * Evaluate an optionally negated single character, numerical,
1961: * or string condition.
1962: */
1.198 schwarze 1963: static int
1.271 schwarze 1964: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 1965: {
1.271 schwarze 1966: char *cp, *name;
1967: size_t sz;
1.241 schwarze 1968: int number, savepos, wanttrue;
1.88 kristaps 1969:
1.198 schwarze 1970: if ('!' == v[*pos]) {
1971: wanttrue = 0;
1972: (*pos)++;
1973: } else
1974: wanttrue = 1;
1975:
1.88 kristaps 1976: switch (v[*pos]) {
1.240 schwarze 1977: case '\0':
1.277 schwarze 1978: return 0;
1.207 schwarze 1979: case 'n':
1980: case 'o':
1.88 kristaps 1981: (*pos)++;
1.277 schwarze 1982: return wanttrue;
1.207 schwarze 1983: case 'c':
1984: case 'd':
1985: case 'e':
1986: case 't':
1.239 schwarze 1987: case 'v':
1.88 kristaps 1988: (*pos)++;
1.277 schwarze 1989: return !wanttrue;
1.271 schwarze 1990: case 'r':
1991: cp = name = v + ++*pos;
1992: sz = roff_getname(r, &cp, ln, *pos);
1993: *pos = cp - v;
1.277 schwarze 1994: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.88 kristaps 1995: default:
1996: break;
1997: }
1998:
1.241 schwarze 1999: savepos = *pos;
1.261 schwarze 2000: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2001: return (number > 0) == wanttrue;
1.241 schwarze 2002: else if (*pos == savepos)
1.277 schwarze 2003: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2004: else
1.277 schwarze 2005: return 0;
1.88 kristaps 2006: }
2007:
1.74 kristaps 2008: static enum rofferr
1.103 kristaps 2009: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2010: {
1.123 schwarze 2011:
1.277 schwarze 2012: return ROFF_IGN;
1.89 kristaps 2013: }
2014:
1.104 kristaps 2015: static enum rofferr
1.251 schwarze 2016: roff_insec(ROFF_ARGS)
2017: {
2018:
2019: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2020: ln, ppos, roff_name[tok]);
1.277 schwarze 2021: return ROFF_IGN;
1.251 schwarze 2022: }
2023:
2024: static enum rofferr
2025: roff_unsupp(ROFF_ARGS)
2026: {
2027:
2028: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2029: ln, ppos, roff_name[tok]);
1.277 schwarze 2030: return ROFF_IGN;
1.251 schwarze 2031: }
2032:
2033: static enum rofferr
1.82 kristaps 2034: roff_cond(ROFF_ARGS)
1.74 kristaps 2035: {
1.173 schwarze 2036:
2037: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2038:
1.207 schwarze 2039: /*
1.134 kristaps 2040: * An `.el' has no conditional body: it will consume the value
2041: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2042: * defaults to DENY.
1.134 kristaps 2043: *
2044: * If we're not an `el', however, then evaluate the conditional.
2045: */
1.133 kristaps 2046:
1.238 schwarze 2047: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2048: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2049: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2050:
1.134 kristaps 2051: /*
2052: * An if-else will put the NEGATION of the current evaluated
2053: * conditional into the stack of rules.
2054: */
2055:
1.238 schwarze 2056: if (tok == ROFF_ie) {
1.223 schwarze 2057: if (r->rstackpos + 1 == r->rstacksz) {
2058: r->rstacksz += 16;
2059: r->rstack = mandoc_reallocarray(r->rstack,
2060: r->rstacksz, sizeof(int));
1.134 kristaps 2061: }
1.198 schwarze 2062: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2063: }
1.88 kristaps 2064:
2065: /* If the parent has false as its rule, then so do we. */
2066:
1.198 schwarze 2067: if (r->last->parent && !r->last->parent->rule)
2068: r->last->rule = 0;
1.88 kristaps 2069:
2070: /*
1.173 schwarze 2071: * Determine scope.
2072: * If there is nothing on the line after the conditional,
2073: * not even whitespace, use next-line scope.
1.88 kristaps 2074: */
1.74 kristaps 2075:
1.238 schwarze 2076: if (buf->buf[pos] == '\0') {
1.173 schwarze 2077: r->last->endspan = 2;
2078: goto out;
2079: }
2080:
1.238 schwarze 2081: while (buf->buf[pos] == ' ')
1.173 schwarze 2082: pos++;
2083:
2084: /* An opening brace requests multiline scope. */
1.75 kristaps 2085:
1.238 schwarze 2086: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2087: r->last->endspan = -1;
2088: pos += 2;
1.272 schwarze 2089: while (buf->buf[pos] == ' ')
2090: pos++;
1.173 schwarze 2091: goto out;
1.207 schwarze 2092: }
1.74 kristaps 2093:
1.77 kristaps 2094: /*
1.173 schwarze 2095: * Anything else following the conditional causes
2096: * single-line scope. Warn if the scope contains
2097: * nothing but trailing whitespace.
1.77 kristaps 2098: */
2099:
1.238 schwarze 2100: if (buf->buf[pos] == '\0')
1.216 schwarze 2101: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2102: ln, ppos, roff_name[tok]);
1.77 kristaps 2103:
1.173 schwarze 2104: r->last->endspan = 1;
1.74 kristaps 2105:
1.173 schwarze 2106: out:
1.75 kristaps 2107: *offs = pos;
1.277 schwarze 2108: return ROFF_RERUN;
1.83 schwarze 2109: }
2110:
2111: static enum rofferr
1.92 schwarze 2112: roff_ds(ROFF_ARGS)
2113: {
1.212 schwarze 2114: char *string;
2115: const char *name;
2116: size_t namesz;
1.96 kristaps 2117:
1.251 schwarze 2118: /* Ignore groff compatibility mode for now. */
2119:
2120: if (tok == ROFF_ds1)
2121: tok = ROFF_ds;
2122: else if (tok == ROFF_as1)
2123: tok = ROFF_as;
2124:
1.96 kristaps 2125: /*
1.212 schwarze 2126: * The first word is the name of the string.
2127: * If it is empty or terminated by an escape sequence,
2128: * abort the `ds' request without defining anything.
1.96 kristaps 2129: */
1.92 schwarze 2130:
1.238 schwarze 2131: name = string = buf->buf + pos;
2132: if (*name == '\0')
1.277 schwarze 2133: return ROFF_IGN;
1.92 schwarze 2134:
1.212 schwarze 2135: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2136: if (name[namesz] == '\\')
1.277 schwarze 2137: return ROFF_IGN;
1.212 schwarze 2138:
2139: /* Read past the initial double-quote, if any. */
1.238 schwarze 2140: if (*string == '"')
1.92 schwarze 2141: string++;
2142:
1.96 kristaps 2143: /* The rest is the value. */
1.212 schwarze 2144: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2145: ROFF_as == tok);
1.277 schwarze 2146: return ROFF_IGN;
1.92 schwarze 2147: }
2148:
1.204 schwarze 2149: /*
2150: * Parse a single operator, one or two characters long.
2151: * If the operator is recognized, return success and advance the
2152: * parse point, else return failure and let the parse point unchanged.
2153: */
2154: static int
2155: roff_getop(const char *v, int *pos, char *res)
2156: {
2157:
2158: *res = v[*pos];
2159:
2160: switch (*res) {
1.207 schwarze 2161: case '+':
2162: case '-':
2163: case '*':
2164: case '/':
2165: case '%':
2166: case '&':
2167: case ':':
1.204 schwarze 2168: break;
2169: case '<':
2170: switch (v[*pos + 1]) {
1.207 schwarze 2171: case '=':
1.204 schwarze 2172: *res = 'l';
2173: (*pos)++;
2174: break;
1.207 schwarze 2175: case '>':
1.204 schwarze 2176: *res = '!';
2177: (*pos)++;
2178: break;
1.207 schwarze 2179: case '?':
1.204 schwarze 2180: *res = 'i';
2181: (*pos)++;
2182: break;
2183: default:
2184: break;
2185: }
2186: break;
2187: case '>':
2188: switch (v[*pos + 1]) {
1.207 schwarze 2189: case '=':
1.204 schwarze 2190: *res = 'g';
2191: (*pos)++;
2192: break;
1.207 schwarze 2193: case '?':
1.204 schwarze 2194: *res = 'a';
2195: (*pos)++;
2196: break;
2197: default:
2198: break;
2199: }
2200: break;
2201: case '=':
2202: if ('=' == v[*pos + 1])
2203: (*pos)++;
2204: break;
2205: default:
1.277 schwarze 2206: return 0;
1.204 schwarze 2207: }
2208: (*pos)++;
2209:
1.277 schwarze 2210: return *res;
1.204 schwarze 2211: }
2212:
2213: /*
2214: * Evaluate either a parenthesized numeric expression
2215: * or a single signed integer number.
2216: */
2217: static int
1.235 schwarze 2218: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2219: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2220: {
2221:
2222: if ('(' != v[*pos])
1.277 schwarze 2223: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2224:
2225: (*pos)++;
1.261 schwarze 2226: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2227: return 0;
1.204 schwarze 2228:
1.206 schwarze 2229: /*
2230: * Omission of the closing parenthesis
2231: * is an error in validation mode,
2232: * but ignored in evaluation mode.
2233: */
2234:
1.204 schwarze 2235: if (')' == v[*pos])
2236: (*pos)++;
1.206 schwarze 2237: else if (NULL == res)
1.277 schwarze 2238: return 0;
1.204 schwarze 2239:
1.277 schwarze 2240: return 1;
1.204 schwarze 2241: }
2242:
2243: /*
2244: * Evaluate a complete numeric expression.
2245: * Proceed left to right, there is no concept of precedence.
2246: */
2247: static int
1.235 schwarze 2248: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2249: int *pos, int *res, int flags)
1.204 schwarze 2250: {
2251: int mypos, operand2;
2252: char operator;
2253:
2254: if (NULL == pos) {
2255: mypos = 0;
2256: pos = &mypos;
2257: }
2258:
1.261 schwarze 2259: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2260: while (isspace((unsigned char)v[*pos]))
2261: (*pos)++;
2262:
1.261 schwarze 2263: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2264: return 0;
1.204 schwarze 2265:
2266: while (1) {
1.261 schwarze 2267: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2268: while (isspace((unsigned char)v[*pos]))
2269: (*pos)++;
2270:
2271: if ( ! roff_getop(v, pos, &operator))
2272: break;
2273:
1.261 schwarze 2274: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2275: while (isspace((unsigned char)v[*pos]))
2276: (*pos)++;
2277:
1.261 schwarze 2278: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2279: return 0;
1.204 schwarze 2280:
1.261 schwarze 2281: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2282: while (isspace((unsigned char)v[*pos]))
2283: (*pos)++;
1.206 schwarze 2284:
2285: if (NULL == res)
2286: continue;
1.204 schwarze 2287:
2288: switch (operator) {
1.207 schwarze 2289: case '+':
1.204 schwarze 2290: *res += operand2;
2291: break;
1.207 schwarze 2292: case '-':
1.204 schwarze 2293: *res -= operand2;
2294: break;
1.207 schwarze 2295: case '*':
1.204 schwarze 2296: *res *= operand2;
2297: break;
1.207 schwarze 2298: case '/':
1.244 schwarze 2299: if (operand2 == 0) {
1.235 schwarze 2300: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2301: r->parse, ln, *pos, v);
2302: *res = 0;
2303: break;
2304: }
1.204 schwarze 2305: *res /= operand2;
2306: break;
1.207 schwarze 2307: case '%':
1.244 schwarze 2308: if (operand2 == 0) {
2309: mandoc_msg(MANDOCERR_DIVZERO,
2310: r->parse, ln, *pos, v);
2311: *res = 0;
2312: break;
2313: }
1.204 schwarze 2314: *res %= operand2;
2315: break;
1.207 schwarze 2316: case '<':
1.204 schwarze 2317: *res = *res < operand2;
2318: break;
1.207 schwarze 2319: case '>':
1.204 schwarze 2320: *res = *res > operand2;
2321: break;
1.207 schwarze 2322: case 'l':
1.204 schwarze 2323: *res = *res <= operand2;
2324: break;
1.207 schwarze 2325: case 'g':
1.204 schwarze 2326: *res = *res >= operand2;
2327: break;
1.207 schwarze 2328: case '=':
1.204 schwarze 2329: *res = *res == operand2;
2330: break;
1.207 schwarze 2331: case '!':
1.204 schwarze 2332: *res = *res != operand2;
2333: break;
1.207 schwarze 2334: case '&':
1.204 schwarze 2335: *res = *res && operand2;
2336: break;
1.207 schwarze 2337: case ':':
1.204 schwarze 2338: *res = *res || operand2;
2339: break;
1.207 schwarze 2340: case 'i':
1.204 schwarze 2341: if (operand2 < *res)
2342: *res = operand2;
2343: break;
1.207 schwarze 2344: case 'a':
1.204 schwarze 2345: if (operand2 > *res)
2346: *res = operand2;
2347: break;
2348: default:
2349: abort();
2350: }
2351: }
1.277 schwarze 2352: return 1;
1.204 schwarze 2353: }
2354:
1.266 schwarze 2355: /* --- register management ------------------------------------------------ */
2356:
1.180 schwarze 2357: void
1.187 schwarze 2358: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2359: {
1.180 schwarze 2360: struct roffreg *reg;
2361:
2362: /* Search for an existing register with the same name. */
2363: reg = r->regtab;
2364:
2365: while (reg && strcmp(name, reg->key.p))
2366: reg = reg->next;
1.147 kristaps 2367:
1.180 schwarze 2368: if (NULL == reg) {
2369: /* Create a new register. */
2370: reg = mandoc_malloc(sizeof(struct roffreg));
2371: reg->key.p = mandoc_strdup(name);
2372: reg->key.sz = strlen(name);
1.187 schwarze 2373: reg->val = 0;
1.180 schwarze 2374: reg->next = r->regtab;
2375: r->regtab = reg;
2376: }
2377:
1.187 schwarze 2378: if ('+' == sign)
2379: reg->val += val;
2380: else if ('-' == sign)
2381: reg->val -= val;
2382: else
2383: reg->val = val;
1.147 kristaps 2384: }
2385:
1.192 schwarze 2386: /*
2387: * Handle some predefined read-only number registers.
2388: * For now, return -1 if the requested register is not predefined;
2389: * in case a predefined read-only register having the value -1
2390: * were to turn up, another special value would have to be chosen.
2391: */
2392: static int
1.273 schwarze 2393: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2394: {
2395:
2396: switch (*name) {
1.273 schwarze 2397: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2398: return r->argc;
1.207 schwarze 2399: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2400: return 0;
1.207 schwarze 2401: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2402: return 1;
1.207 schwarze 2403: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2404: return 24;
1.207 schwarze 2405: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2406: return 0;
1.207 schwarze 2407: case 'T': /* Some output device is always defined. */
1.277 schwarze 2408: return 1;
1.207 schwarze 2409: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2410: return 40;
1.192 schwarze 2411: default:
1.277 schwarze 2412: return -1;
1.192 schwarze 2413: }
2414: }
2415:
1.181 schwarze 2416: int
1.180 schwarze 2417: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2418: {
1.180 schwarze 2419: struct roffreg *reg;
1.192 schwarze 2420: int val;
2421:
2422: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2423: val = roff_getregro(r, name + 1);
1.192 schwarze 2424: if (-1 != val)
1.277 schwarze 2425: return val;
1.192 schwarze 2426: }
1.180 schwarze 2427:
2428: for (reg = r->regtab; reg; reg = reg->next)
2429: if (0 == strcmp(name, reg->key.p))
1.277 schwarze 2430: return reg->val;
1.181 schwarze 2431:
1.277 schwarze 2432: return 0;
1.181 schwarze 2433: }
2434:
2435: static int
2436: roff_getregn(const struct roff *r, const char *name, size_t len)
2437: {
2438: struct roffreg *reg;
1.192 schwarze 2439: int val;
2440:
2441: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2442: val = roff_getregro(r, name + 1);
1.192 schwarze 2443: if (-1 != val)
1.277 schwarze 2444: return val;
1.192 schwarze 2445: }
1.181 schwarze 2446:
2447: for (reg = r->regtab; reg; reg = reg->next)
2448: if (len == reg->key.sz &&
2449: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2450: return reg->val;
1.271 schwarze 2451:
1.277 schwarze 2452: return 0;
1.271 schwarze 2453: }
2454:
2455: static int
2456: roff_hasregn(const struct roff *r, const char *name, size_t len)
2457: {
2458: struct roffreg *reg;
2459: int val;
2460:
2461: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2462: val = roff_getregro(r, name + 1);
1.271 schwarze 2463: if (-1 != val)
1.277 schwarze 2464: return 1;
1.271 schwarze 2465: }
2466:
2467: for (reg = r->regtab; reg; reg = reg->next)
2468: if (len == reg->key.sz &&
2469: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2470: return 1;
1.147 kristaps 2471:
1.277 schwarze 2472: return 0;
1.147 kristaps 2473: }
2474:
1.180 schwarze 2475: static void
2476: roff_freereg(struct roffreg *reg)
1.147 kristaps 2477: {
1.180 schwarze 2478: struct roffreg *old_reg;
1.147 kristaps 2479:
1.180 schwarze 2480: while (NULL != reg) {
2481: free(reg->key.p);
2482: old_reg = reg;
2483: reg = reg->next;
2484: free(old_reg);
2485: }
1.147 kristaps 2486: }
1.92 schwarze 2487:
2488: static enum rofferr
1.89 kristaps 2489: roff_nr(ROFF_ARGS)
1.83 schwarze 2490: {
1.212 schwarze 2491: char *key, *val;
2492: size_t keysz;
1.138 kristaps 2493: int iv;
1.187 schwarze 2494: char sign;
1.89 kristaps 2495:
1.238 schwarze 2496: key = val = buf->buf + pos;
2497: if (*key == '\0')
1.277 schwarze 2498: return ROFF_IGN;
1.212 schwarze 2499:
2500: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2501: if (key[keysz] == '\\')
1.277 schwarze 2502: return ROFF_IGN;
1.212 schwarze 2503: key[keysz] = '\0';
1.89 kristaps 2504:
1.187 schwarze 2505: sign = *val;
1.238 schwarze 2506: if (sign == '+' || sign == '-')
1.187 schwarze 2507: val++;
2508:
1.261 schwarze 2509: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2510: roff_setreg(r, key, iv, sign);
1.109 kristaps 2511:
1.277 schwarze 2512: return ROFF_IGN;
1.203 schwarze 2513: }
2514:
2515: static enum rofferr
2516: roff_rr(ROFF_ARGS)
2517: {
2518: struct roffreg *reg, **prev;
1.212 schwarze 2519: char *name, *cp;
2520: size_t namesz;
1.203 schwarze 2521:
1.238 schwarze 2522: name = cp = buf->buf + pos;
2523: if (*name == '\0')
1.277 schwarze 2524: return ROFF_IGN;
1.212 schwarze 2525: namesz = roff_getname(r, &cp, ln, pos);
2526: name[namesz] = '\0';
1.203 schwarze 2527:
2528: prev = &r->regtab;
2529: while (1) {
2530: reg = *prev;
1.238 schwarze 2531: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2532: break;
2533: prev = ®->next;
2534: }
1.238 schwarze 2535: if (reg != NULL) {
1.203 schwarze 2536: *prev = reg->next;
2537: free(reg->key.p);
2538: free(reg);
2539: }
1.277 schwarze 2540: return ROFF_IGN;
1.122 schwarze 2541: }
2542:
1.266 schwarze 2543: /* --- handler functions for roff requests -------------------------------- */
2544:
1.122 schwarze 2545: static enum rofferr
2546: roff_rm(ROFF_ARGS)
2547: {
2548: const char *name;
2549: char *cp;
1.212 schwarze 2550: size_t namesz;
1.122 schwarze 2551:
1.238 schwarze 2552: cp = buf->buf + pos;
2553: while (*cp != '\0') {
1.212 schwarze 2554: name = cp;
1.238 schwarze 2555: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2556: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.238 schwarze 2557: if (name[namesz] == '\\')
1.212 schwarze 2558: break;
1.122 schwarze 2559: }
1.277 schwarze 2560: return ROFF_IGN;
1.178 schwarze 2561: }
2562:
2563: static enum rofferr
2564: roff_it(ROFF_ARGS)
2565: {
2566: int iv;
2567:
2568: /* Parse the number of lines. */
1.261 schwarze 2569:
2570: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2571: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2572: ln, ppos, buf->buf + 1);
1.277 schwarze 2573: return ROFF_IGN;
1.178 schwarze 2574: }
2575:
1.262 schwarze 2576: while (isspace((unsigned char)buf->buf[pos]))
2577: pos++;
2578:
2579: /*
2580: * Arm the input line trap.
2581: * Special-casing "an-trap" is an ugly workaround to cope
2582: * with DocBook stupidly fiddling with man(7) internals.
2583: */
1.261 schwarze 2584:
1.178 schwarze 2585: roffit_lines = iv;
1.262 schwarze 2586: roffit_macro = mandoc_strdup(iv != 1 ||
2587: strcmp(buf->buf + pos, "an-trap") ?
2588: buf->buf + pos : "br");
1.277 schwarze 2589: return ROFF_IGN;
1.175 schwarze 2590: }
2591:
2592: static enum rofferr
2593: roff_Dd(ROFF_ARGS)
2594: {
2595: const char *const *cp;
2596:
1.227 schwarze 2597: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.175 schwarze 2598: for (cp = __mdoc_reserved; *cp; cp++)
2599: roff_setstr(r, *cp, NULL, 0);
2600:
1.227 schwarze 2601: if (r->format == 0)
2602: r->format = MPARSE_MDOC;
2603:
1.277 schwarze 2604: return ROFF_CONT;
1.175 schwarze 2605: }
2606:
2607: static enum rofferr
2608: roff_TH(ROFF_ARGS)
2609: {
2610: const char *const *cp;
2611:
1.227 schwarze 2612: if ((r->options & MPARSE_QUICK) == 0)
1.175 schwarze 2613: for (cp = __man_reserved; *cp; cp++)
2614: roff_setstr(r, *cp, NULL, 0);
2615:
1.227 schwarze 2616: if (r->format == 0)
2617: r->format = MPARSE_MAN;
2618:
1.277 schwarze 2619: return ROFF_CONT;
1.109 kristaps 2620: }
2621:
2622: static enum rofferr
2623: roff_TE(ROFF_ARGS)
2624: {
2625:
2626: if (NULL == r->tbl)
1.221 schwarze 2627: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2628: ln, ppos, "TE");
1.258 schwarze 2629: else if ( ! tbl_end(&r->tbl)) {
2630: free(buf->buf);
2631: buf->buf = mandoc_strdup(".sp");
2632: buf->sz = 4;
1.277 schwarze 2633: return ROFF_REPARSE;
1.258 schwarze 2634: }
1.277 schwarze 2635: return ROFF_IGN;
1.112 kristaps 2636: }
2637:
2638: static enum rofferr
2639: roff_T_(ROFF_ARGS)
2640: {
2641:
2642: if (NULL == r->tbl)
1.221 schwarze 2643: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2644: ln, ppos, "T&");
1.112 kristaps 2645: else
1.296 schwarze 2646: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 2647:
1.277 schwarze 2648: return ROFF_IGN;
1.109 kristaps 2649: }
2650:
1.230 schwarze 2651: /*
2652: * Handle in-line equation delimiters.
2653: */
2654: static enum rofferr
1.238 schwarze 2655: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2656: {
1.233 schwarze 2657: char *cp1, *cp2;
2658: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2659:
1.230 schwarze 2660: /*
2661: * Outside equations, look for an opening delimiter.
2662: * If we are inside an equation, we already know it is
2663: * in-line, or this function wouldn't have been called;
2664: * so look for a closing delimiter.
2665: */
2666:
1.238 schwarze 2667: cp1 = buf->buf + pos;
1.230 schwarze 2668: cp2 = strchr(cp1, r->eqn == NULL ?
2669: r->last_eqn->odelim : r->last_eqn->cdelim);
2670: if (cp2 == NULL)
1.277 schwarze 2671: return ROFF_CONT;
1.230 schwarze 2672:
1.233 schwarze 2673: *cp2++ = '\0';
2674: bef_pr = bef_nl = aft_nl = aft_pr = "";
2675:
2676: /* Handle preceding text, protecting whitespace. */
2677:
1.238 schwarze 2678: if (*buf->buf != '\0') {
1.233 schwarze 2679: if (r->eqn == NULL)
2680: bef_pr = "\\&";
2681: bef_nl = "\n";
2682: }
2683:
2684: /*
2685: * Prepare replacing the delimiter with an equation macro
2686: * and drop leading white space from the equation.
2687: */
1.230 schwarze 2688:
1.233 schwarze 2689: if (r->eqn == NULL) {
2690: while (*cp2 == ' ')
2691: cp2++;
2692: mac = ".EQ";
2693: } else
2694: mac = ".EN";
2695:
2696: /* Handle following text, protecting whitespace. */
2697:
2698: if (*cp2 != '\0') {
2699: aft_nl = "\n";
2700: if (r->eqn != NULL)
2701: aft_pr = "\\&";
2702: }
2703:
2704: /* Do the actual replacement. */
2705:
1.238 schwarze 2706: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2707: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2708: free(buf->buf);
2709: buf->buf = cp1;
1.230 schwarze 2710:
2711: /* Toggle the in-line state of the eqn subsystem. */
2712:
2713: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2714: return ROFF_REPARSE;
1.151 kristaps 2715: }
2716:
1.235 schwarze 2717: static enum rofferr
2718: roff_EQ(ROFF_ARGS)
1.125 kristaps 2719: {
1.151 kristaps 2720: struct eqn_node *e;
1.125 kristaps 2721:
1.238 schwarze 2722: assert(r->eqn == NULL);
1.235 schwarze 2723: e = eqn_alloc(ppos, ln, r->parse);
1.125 kristaps 2724:
1.230 schwarze 2725: if (r->last_eqn) {
1.125 kristaps 2726: r->last_eqn->next = e;
1.230 schwarze 2727: e->delim = r->last_eqn->delim;
2728: e->odelim = r->last_eqn->odelim;
2729: e->cdelim = r->last_eqn->cdelim;
2730: } else
1.125 kristaps 2731: r->first_eqn = r->last_eqn = e;
2732:
2733: r->eqn = r->last_eqn = e;
1.151 kristaps 2734:
1.238 schwarze 2735: if (buf->buf[pos] != '\0')
1.235 schwarze 2736: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2737: ".EQ %s", buf->buf + pos);
1.151 kristaps 2738:
1.277 schwarze 2739: return ROFF_IGN;
1.125 kristaps 2740: }
2741:
2742: static enum rofferr
2743: roff_EN(ROFF_ARGS)
2744: {
2745:
1.221 schwarze 2746: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.277 schwarze 2747: return ROFF_IGN;
1.125 kristaps 2748: }
2749:
2750: static enum rofferr
1.109 kristaps 2751: roff_TS(ROFF_ARGS)
2752: {
1.176 schwarze 2753: struct tbl_node *tbl;
1.89 kristaps 2754:
1.115 kristaps 2755: if (r->tbl) {
1.221 schwarze 2756: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2757: ln, ppos, "TS breaks TS");
1.151 kristaps 2758: tbl_end(&r->tbl);
1.115 kristaps 2759: }
1.83 schwarze 2760:
1.176 schwarze 2761: tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2762:
2763: if (r->last_tbl)
1.176 schwarze 2764: r->last_tbl->next = tbl;
1.113 kristaps 2765: else
1.176 schwarze 2766: r->first_tbl = r->last_tbl = tbl;
1.113 kristaps 2767:
1.176 schwarze 2768: r->tbl = r->last_tbl = tbl;
1.297 schwarze 2769: return ROFF_IGN;
2770: }
2771:
2772: static enum rofferr
2773: roff_onearg(ROFF_ARGS)
2774: {
2775: struct roff_node *n;
2776: char *cp;
2777:
2778: roff_elem_alloc(r->man, ln, ppos, tok);
2779: n = r->man->last;
2780:
2781: cp = buf->buf + pos;
2782: if (*cp != '\0') {
2783: while (*cp != '\0' && *cp != ' ')
2784: cp++;
2785: while (*cp == ' ')
2786: *cp++ = '\0';
2787: if (*cp != '\0')
2788: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2789: r->parse, ln, cp - buf->buf,
2790: "%s ... %s", roff_name[tok], cp);
2791: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
2792: }
2793:
2794: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2795: r->man->last = n;
2796: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 2797: return ROFF_IGN;
1.251 schwarze 2798: }
2799:
2800: static enum rofferr
1.296 schwarze 2801: roff_br(ROFF_ARGS)
1.251 schwarze 2802: {
1.296 schwarze 2803: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
2804: if (buf->buf[pos] != '\0')
2805: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2806: "%s %s", roff_name[tok], buf->buf + pos);
2807: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2808: r->man->next = ROFF_NEXT_SIBLING;
2809: return ROFF_IGN;
1.92 schwarze 2810: }
2811:
1.105 kristaps 2812: static enum rofferr
1.174 kristaps 2813: roff_cc(ROFF_ARGS)
2814: {
2815: const char *p;
2816:
1.238 schwarze 2817: p = buf->buf + pos;
1.174 kristaps 2818:
1.238 schwarze 2819: if (*p == '\0' || (r->control = *p++) == '.')
1.174 kristaps 2820: r->control = 0;
2821:
1.238 schwarze 2822: if (*p != '\0')
1.260 schwarze 2823: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2824: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 2825:
1.277 schwarze 2826: return ROFF_IGN;
1.174 kristaps 2827: }
2828:
2829: static enum rofferr
1.164 kristaps 2830: roff_tr(ROFF_ARGS)
2831: {
2832: const char *p, *first, *second;
2833: size_t fsz, ssz;
2834: enum mandoc_esc esc;
2835:
1.238 schwarze 2836: p = buf->buf + pos;
1.164 kristaps 2837:
1.238 schwarze 2838: if (*p == '\0') {
1.260 schwarze 2839: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 2840: return ROFF_IGN;
1.164 kristaps 2841: }
2842:
1.238 schwarze 2843: while (*p != '\0') {
1.164 kristaps 2844: fsz = ssz = 1;
2845:
2846: first = p++;
1.238 schwarze 2847: if (*first == '\\') {
1.164 kristaps 2848: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2849: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2850: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2851: ln, (int)(p - buf->buf), first);
1.277 schwarze 2852: return ROFF_IGN;
1.164 kristaps 2853: }
2854: fsz = (size_t)(p - first);
2855: }
2856:
2857: second = p++;
1.238 schwarze 2858: if (*second == '\\') {
1.164 kristaps 2859: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2860: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2861: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2862: ln, (int)(p - buf->buf), second);
1.277 schwarze 2863: return ROFF_IGN;
1.164 kristaps 2864: }
2865: ssz = (size_t)(p - second);
1.238 schwarze 2866: } else if (*second == '\0') {
1.260 schwarze 2867: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2868: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 2869: second = " ";
1.165 kristaps 2870: p--;
1.164 kristaps 2871: }
2872:
1.167 kristaps 2873: if (fsz > 1) {
1.207 schwarze 2874: roff_setstrn(&r->xmbtab, first, fsz,
2875: second, ssz, 0);
1.167 kristaps 2876: continue;
2877: }
2878:
1.238 schwarze 2879: if (r->xtab == NULL)
1.207 schwarze 2880: r->xtab = mandoc_calloc(128,
2881: sizeof(struct roffstr));
1.167 kristaps 2882:
2883: free(r->xtab[(int)*first].p);
2884: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
2885: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 2886: }
2887:
1.277 schwarze 2888: return ROFF_IGN;
1.164 kristaps 2889: }
2890:
2891: static enum rofferr
1.105 kristaps 2892: roff_so(ROFF_ARGS)
2893: {
1.249 schwarze 2894: char *name, *cp;
1.105 kristaps 2895:
1.238 schwarze 2896: name = buf->buf + pos;
1.224 schwarze 2897: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 2898:
2899: /*
2900: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
2901: * opening anything that's not in our cwd or anything beneath
2902: * it. Thus, explicitly disallow traversing up the file-system
2903: * or using absolute paths.
2904: */
2905:
1.238 schwarze 2906: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 2907: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
2908: ".so %s", name);
1.249 schwarze 2909: buf->sz = mandoc_asprintf(&cp,
2910: ".sp\nSee the file %s.\n.sp", name) + 1;
2911: free(buf->buf);
2912: buf->buf = cp;
2913: *offs = 0;
1.277 schwarze 2914: return ROFF_REPARSE;
1.105 kristaps 2915: }
2916:
2917: *offs = pos;
1.277 schwarze 2918: return ROFF_SO;
1.105 kristaps 2919: }
1.92 schwarze 2920:
1.266 schwarze 2921: /* --- user defined strings and macros ------------------------------------ */
2922:
1.106 kristaps 2923: static enum rofferr
2924: roff_userdef(ROFF_ARGS)
1.99 kristaps 2925: {
1.263 schwarze 2926: const char *arg[9], *ap;
1.106 kristaps 2927: char *cp, *n1, *n2;
1.292 schwarze 2928: int expand_count, i, ib, ie;
1.263 schwarze 2929: size_t asz, rsz;
1.106 kristaps 2930:
2931: /*
2932: * Collect pointers to macro argument strings
1.188 schwarze 2933: * and NUL-terminate them.
1.106 kristaps 2934: */
1.263 schwarze 2935:
1.273 schwarze 2936: r->argc = 0;
1.238 schwarze 2937: cp = buf->buf + pos;
1.273 schwarze 2938: for (i = 0; i < 9; i++) {
2939: if (*cp == '\0')
2940: arg[i] = "";
2941: else {
2942: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
2943: r->argc = i + 1;
2944: }
2945: }
1.99 kristaps 2946:
1.106 kristaps 2947: /*
2948: * Expand macro arguments.
1.99 kristaps 2949: */
1.263 schwarze 2950:
2951: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 2952: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 2953: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 2954: expand_count = 0;
1.263 schwarze 2955: while (*cp != '\0') {
2956:
2957: /* Scan ahead for the next argument invocation. */
2958:
2959: if (*cp++ != '\\')
2960: continue;
2961: if (*cp++ != '$')
2962: continue;
1.274 schwarze 2963: if (*cp == '*') { /* \\$* inserts all arguments */
2964: ib = 0;
2965: ie = r->argc - 1;
2966: } else { /* \\$1 .. \\$9 insert one argument */
2967: ib = ie = *cp - '1';
2968: if (ib < 0 || ib > 8)
2969: continue;
2970: }
1.263 schwarze 2971: cp -= 2;
1.292 schwarze 2972:
2973: /*
2974: * Prevent infinite recursion.
2975: */
2976:
2977: if (cp >= n2)
2978: expand_count = 1;
2979: else if (++expand_count > EXPAND_LIMIT) {
2980: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
2981: ln, (int)(cp - n1), NULL);
1.293 schwarze 2982: free(buf->buf);
2983: buf->buf = n1;
1.292 schwarze 2984: return ROFF_IGN;
2985: }
1.263 schwarze 2986:
2987: /*
2988: * Determine the size of the expanded argument,
2989: * taking escaping of quotes into account.
2990: */
2991:
1.274 schwarze 2992: asz = ie > ib ? ie - ib : 0; /* for blanks */
2993: for (i = ib; i <= ie; i++) {
2994: for (ap = arg[i]; *ap != '\0'; ap++) {
2995: asz++;
2996: if (*ap == '"')
2997: asz += 3;
2998: }
1.263 schwarze 2999: }
3000: if (asz != 3) {
3001:
3002: /*
3003: * Determine the size of the rest of the
3004: * unexpanded macro, including the NUL.
3005: */
3006:
3007: rsz = buf->sz - (cp - n1) - 3;
3008:
3009: /*
3010: * When shrinking, move before
3011: * releasing the storage.
3012: */
3013:
3014: if (asz < 3)
3015: memmove(cp + asz, cp + 3, rsz);
3016:
3017: /*
3018: * Resize the storage for the macro
3019: * and readjust the parse pointer.
3020: */
3021:
3022: buf->sz += asz - 3;
3023: n2 = mandoc_realloc(n1, buf->sz);
3024: cp = n2 + (cp - n1);
3025: n1 = n2;
3026:
3027: /*
3028: * When growing, make room
3029: * for the expanded argument.
3030: */
3031:
3032: if (asz > 3)
3033: memmove(cp + asz, cp + 3, rsz);
3034: }
3035:
3036: /* Copy the expanded argument, escaping quotes. */
3037:
3038: n2 = cp;
1.274 schwarze 3039: for (i = ib; i <= ie; i++) {
3040: for (ap = arg[i]; *ap != '\0'; ap++) {
3041: if (*ap == '"') {
3042: memcpy(n2, "\\(dq", 4);
3043: n2 += 4;
3044: } else
3045: *n2++ = *ap;
3046: }
3047: if (i < ie)
3048: *n2++ = ' ';
1.106 kristaps 3049: }
1.99 kristaps 3050: }
3051:
1.106 kristaps 3052: /*
3053: * Replace the macro invocation
3054: * by the expanded macro.
3055: */
1.263 schwarze 3056:
1.238 schwarze 3057: free(buf->buf);
3058: buf->buf = n1;
1.248 schwarze 3059: *offs = 0;
1.106 kristaps 3060:
1.277 schwarze 3061: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3062: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3063: }
1.121 schwarze 3064:
1.212 schwarze 3065: static size_t
1.121 schwarze 3066: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3067: {
3068: char *name, *cp;
1.212 schwarze 3069: size_t namesz;
1.121 schwarze 3070:
3071: name = *cpp;
3072: if ('\0' == *name)
1.277 schwarze 3073: return 0;
1.121 schwarze 3074:
1.212 schwarze 3075: /* Read until end of name and terminate it with NUL. */
3076: for (cp = name; 1; cp++) {
3077: if ('\0' == *cp || ' ' == *cp) {
3078: namesz = cp - name;
3079: break;
3080: }
1.121 schwarze 3081: if ('\\' != *cp)
3082: continue;
1.215 schwarze 3083: namesz = cp - name;
3084: if ('{' == cp[1] || '}' == cp[1])
3085: break;
1.121 schwarze 3086: cp++;
3087: if ('\\' == *cp)
3088: continue;
1.224 schwarze 3089: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3090: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3091: mandoc_escape((const char **)&cp, NULL, NULL);
3092: break;
1.121 schwarze 3093: }
3094:
3095: /* Read past spaces. */
3096: while (' ' == *cp)
3097: cp++;
3098:
3099: *cpp = cp;
1.277 schwarze 3100: return namesz;
1.121 schwarze 3101: }
3102:
1.106 kristaps 3103: /*
3104: * Store *string into the user-defined string called *name.
3105: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3106: * append == 0: replace mode
3107: * append == 1: single-line append mode
3108: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3109: */
1.94 kristaps 3110: static void
1.106 kristaps 3111: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3112: int append)
1.92 schwarze 3113: {
1.164 kristaps 3114:
3115: roff_setstrn(&r->strtab, name, strlen(name), string,
1.207 schwarze 3116: string ? strlen(string) : 0, append);
1.164 kristaps 3117: }
3118:
3119: static void
1.166 kristaps 3120: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3121: const char *string, size_t stringsz, int append)
1.164 kristaps 3122: {
1.166 kristaps 3123: struct roffkv *n;
1.164 kristaps 3124: char *c;
3125: int i;
3126: size_t oldch, newch;
1.92 schwarze 3127:
1.106 kristaps 3128: /* Search for an existing string with the same name. */
1.164 kristaps 3129: n = *r;
3130:
1.211 schwarze 3131: while (n && (namesz != n->key.sz ||
3132: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3133: n = n->next;
1.94 kristaps 3134:
3135: if (NULL == n) {
1.106 kristaps 3136: /* Create a new string table entry. */
1.166 kristaps 3137: n = mandoc_malloc(sizeof(struct roffkv));
3138: n->key.p = mandoc_strndup(name, namesz);
3139: n->key.sz = namesz;
3140: n->val.p = NULL;
3141: n->val.sz = 0;
1.164 kristaps 3142: n->next = *r;
3143: *r = n;
1.193 schwarze 3144: } else if (0 == append) {
1.166 kristaps 3145: free(n->val.p);
3146: n->val.p = NULL;
3147: n->val.sz = 0;
1.106 kristaps 3148: }
3149:
3150: if (NULL == string)
3151: return;
3152:
3153: /*
3154: * One additional byte for the '\n' in multiline mode,
3155: * and one for the terminating '\0'.
3156: */
1.193 schwarze 3157: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3158:
1.166 kristaps 3159: if (NULL == n->val.p) {
3160: n->val.p = mandoc_malloc(newch);
3161: *n->val.p = '\0';
1.106 kristaps 3162: oldch = 0;
3163: } else {
1.166 kristaps 3164: oldch = n->val.sz;
3165: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3166: }
3167:
3168: /* Skip existing content in the destination buffer. */
1.166 kristaps 3169: c = n->val.p + (int)oldch;
1.106 kristaps 3170:
3171: /* Append new content to the destination buffer. */
1.164 kristaps 3172: i = 0;
3173: while (i < (int)stringsz) {
1.106 kristaps 3174: /*
3175: * Rudimentary roff copy mode:
3176: * Handle escaped backslashes.
3177: */
1.164 kristaps 3178: if ('\\' == string[i] && '\\' == string[i + 1])
3179: i++;
3180: *c++ = string[i++];
1.106 kristaps 3181: }
1.94 kristaps 3182:
1.106 kristaps 3183: /* Append terminating bytes. */
1.193 schwarze 3184: if (1 < append)
1.106 kristaps 3185: *c++ = '\n';
1.163 kristaps 3186:
1.106 kristaps 3187: *c = '\0';
1.166 kristaps 3188: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3189: }
3190:
1.94 kristaps 3191: static const char *
3192: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.92 schwarze 3193: {
1.166 kristaps 3194: const struct roffkv *n;
1.191 schwarze 3195: int i;
1.92 schwarze 3196:
1.164 kristaps 3197: for (n = r->strtab; n; n = n->next)
1.207 schwarze 3198: if (0 == strncmp(name, n->key.p, len) &&
3199: '\0' == n->key.p[(int)len])
1.277 schwarze 3200: return n->val.p;
1.191 schwarze 3201:
3202: for (i = 0; i < PREDEFS_MAX; i++)
3203: if (0 == strncmp(name, predefs[i].name, len) &&
3204: '\0' == predefs[i].name[(int)len])
1.277 schwarze 3205: return predefs[i].str;
1.94 kristaps 3206:
1.277 schwarze 3207: return NULL;
1.92 schwarze 3208: }
3209:
1.94 kristaps 3210: static void
1.167 kristaps 3211: roff_freestr(struct roffkv *r)
1.92 schwarze 3212: {
1.166 kristaps 3213: struct roffkv *n, *nn;
1.92 schwarze 3214:
1.167 kristaps 3215: for (n = r; n; n = nn) {
1.166 kristaps 3216: free(n->key.p);
3217: free(n->val.p);
1.92 schwarze 3218: nn = n->next;
3219: free(n);
3220: }
1.114 kristaps 3221: }
1.266 schwarze 3222:
3223: /* --- accessors and utility functions ------------------------------------ */
1.114 kristaps 3224:
3225: const struct tbl_span *
3226: roff_span(const struct roff *r)
3227: {
1.207 schwarze 3228:
1.277 schwarze 3229: return r->tbl ? tbl_span(r->tbl) : NULL;
1.125 kristaps 3230: }
3231:
3232: const struct eqn *
3233: roff_eqn(const struct roff *r)
3234: {
1.207 schwarze 3235:
1.277 schwarze 3236: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.164 kristaps 3237: }
3238:
3239: /*
3240: * Duplicate an input string, making the appropriate character
3241: * conversations (as stipulated by `tr') along the way.
3242: * Returns a heap-allocated string with all the replacements made.
3243: */
3244: char *
3245: roff_strdup(const struct roff *r, const char *p)
3246: {
1.166 kristaps 3247: const struct roffkv *cp;
1.164 kristaps 3248: char *res;
3249: const char *pp;
3250: size_t ssz, sz;
3251: enum mandoc_esc esc;
3252:
1.167 kristaps 3253: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3254: return mandoc_strdup(p);
1.164 kristaps 3255: else if ('\0' == *p)
1.277 schwarze 3256: return mandoc_strdup("");
1.164 kristaps 3257:
3258: /*
3259: * Step through each character looking for term matches
3260: * (remember that a `tr' can be invoked with an escape, which is
3261: * a glyph but the escape is multi-character).
3262: * We only do this if the character hash has been initialised
3263: * and the string is >0 length.
3264: */
3265:
3266: res = NULL;
3267: ssz = 0;
3268:
3269: while ('\0' != *p) {
1.289 schwarze 3270: assert((unsigned int)*p < 128);
3271: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3272: sz = r->xtab[(int)*p].sz;
3273: res = mandoc_realloc(res, ssz + sz + 1);
3274: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3275: ssz += sz;
3276: p++;
3277: continue;
3278: } else if ('\\' != *p) {
3279: res = mandoc_realloc(res, ssz + 2);
3280: res[ssz++] = *p++;
3281: continue;
3282: }
3283:
1.164 kristaps 3284: /* Search for term matches. */
1.167 kristaps 3285: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3286: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3287: break;
3288:
3289: if (NULL != cp) {
3290: /*
3291: * A match has been found.
3292: * Append the match to the array and move
3293: * forward by its keysize.
3294: */
1.207 schwarze 3295: res = mandoc_realloc(res,
3296: ssz + cp->val.sz + 1);
1.166 kristaps 3297: memcpy(res + ssz, cp->val.p, cp->val.sz);
3298: ssz += cp->val.sz;
3299: p += (int)cp->key.sz;
1.164 kristaps 3300: continue;
3301: }
3302:
1.167 kristaps 3303: /*
3304: * Handle escapes carefully: we need to copy
3305: * over just the escape itself, or else we might
3306: * do replacements within the escape itself.
3307: * Make sure to pass along the bogus string.
3308: */
3309: pp = p++;
3310: esc = mandoc_escape(&p, NULL, NULL);
3311: if (ESCAPE_ERROR == esc) {
3312: sz = strlen(pp);
1.164 kristaps 3313: res = mandoc_realloc(res, ssz + sz + 1);
3314: memcpy(res + ssz, pp, sz);
1.167 kristaps 3315: break;
1.164 kristaps 3316: }
1.207 schwarze 3317: /*
3318: * We bail out on bad escapes.
1.167 kristaps 3319: * No need to warn: we already did so when
3320: * roff_res() was called.
3321: */
3322: sz = (int)(p - pp);
3323: res = mandoc_realloc(res, ssz + sz + 1);
3324: memcpy(res + ssz, pp, sz);
3325: ssz += sz;
1.164 kristaps 3326: }
3327:
3328: res[(int)ssz] = '\0';
1.277 schwarze 3329: return res;
1.227 schwarze 3330: }
3331:
3332: int
3333: roff_getformat(const struct roff *r)
3334: {
3335:
1.277 schwarze 3336: return r->format;
1.174 kristaps 3337: }
3338:
3339: /*
1.207 schwarze 3340: * Find out whether a line is a macro line or not.
1.174 kristaps 3341: * If it is, adjust the current position and return one; if it isn't,
3342: * return zero and don't change the current position.
3343: * If the control character has been set with `.cc', then let that grain
3344: * precedence.
3345: * This is slighly contrary to groff, where using the non-breaking
3346: * control character when `cc' has been invoked will cause the
3347: * non-breaking macro contents to be printed verbatim.
3348: */
3349: int
3350: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3351: {
3352: int pos;
3353:
3354: pos = *ppos;
3355:
3356: if (0 != r->control && cp[pos] == r->control)
3357: pos++;
3358: else if (0 != r->control)
1.277 schwarze 3359: return 0;
1.174 kristaps 3360: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3361: pos += 2;
3362: else if ('.' == cp[pos] || '\'' == cp[pos])
3363: pos++;
3364: else
1.277 schwarze 3365: return 0;
1.174 kristaps 3366:
3367: while (' ' == cp[pos] || '\t' == cp[pos])
3368: pos++;
3369:
3370: *ppos = pos;
1.277 schwarze 3371: return 1;
1.74 kristaps 3372: }
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