Annotation of mandoc/roff.c, Revision 1.299
1.299 ! schwarze 1: /* $Id: roff.c,v 1.298 2017/05/05 13:17:55 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] = {
1.299 ! schwarze 214: "br", "ft", "ll", "sp",
! 215: NULL,
1.294 schwarze 216: "ab", "ad", "af", "aln",
217: "als", "am", "am1", "ami",
218: "ami1", "as", "as1", "asciify",
219: "backtrace", "bd", "bleedat", "blm",
220: "box", "boxa", "bp", "BP",
221: "break", "breakchar", "brnl", "brp",
222: "brpnl", "c2", "cc", "ce",
223: "cf", "cflags", "ch", "char",
224: "chop", "class", "close", "CL",
225: "color", "composite", "continue", "cp",
226: "cropat", "cs", "cu", "da",
227: "dch", "Dd", "de", "de1",
228: "defcolor", "dei", "dei1", "device",
229: "devicem", "di", "do", "ds",
230: "ds1", "dwh", "dt", "ec",
231: "ecr", "ecs", "el", "em",
232: "EN", "eo", "EP", "EQ",
233: "errprint", "ev", "evc", "ex",
234: "fallback", "fam", "fc", "fchar",
235: "fcolor", "fdeferlig", "feature", "fkern",
236: "fl", "flig", "fp", "fps",
237: "fschar", "fspacewidth", "fspecial", "ftr",
238: "fzoom", "gcolor", "hc", "hcode",
239: "hidechar", "hla", "hlm", "hpf",
240: "hpfa", "hpfcode", "hw", "hy",
241: "hylang", "hylen", "hym", "hypp",
242: "hys", "ie", "if", "ig",
243: "index", "it", "itc", "IX",
244: "kern", "kernafter", "kernbefore", "kernpair",
245: "lc", "lc_ctype", "lds", "length",
246: "letadj", "lf", "lg", "lhang",
247: "linetabs", "lnr", "lnrf", "lpfx",
248: "ls", "lsm", "lt", "mc",
249: "mediasize", "minss", "mk", "mso",
250: "na", "ne", "nh", "nhychar",
251: "nm", "nn", "nop", "nr",
252: "nrf", "nroff", "ns", "nx",
253: "open", "opena", "os", "output",
254: "padj", "papersize", "pc", "pev",
255: "pi", "PI", "pl", "pm",
256: "pn", "pnr", "po", "ps",
257: "psbb", "pshape", "pso", "ptr",
258: "pvs", "rchar", "rd", "recursionlimit",
259: "return", "rfschar", "rhang", "rj",
260: "rm", "rn", "rnn", "rr",
261: "rs", "rt", "schar", "sentchar",
262: "shc", "shift", "sizes", "so",
263: "spacewidth", "special", "spreadwarn", "ss",
264: "sty", "substring", "sv", "sy",
265: "T&", "ta", "tc", "TE",
266: "TH", "ti", "tkf", "tl",
267: "tm", "tm1", "tmc", "tr",
268: "track", "transchar", "trf", "trimat",
269: "trin", "trnt", "troff", "TS",
270: "uf", "ul", "unformat", "unwatch",
271: "unwatchn", "vpt", "vs", "warn",
272: "warnscale", "watch", "watchlength", "watchn",
273: "wh", "while", "write", "writec",
274: "writem", "xflag", ".", NULL,
275: "text",
276: "Dd", "Dt", "Os", "Sh",
277: "Ss", "Pp", "D1", "Dl",
278: "Bd", "Ed", "Bl", "El",
279: "It", "Ad", "An", "Ap",
280: "Ar", "Cd", "Cm", "Dv",
281: "Er", "Ev", "Ex", "Fa",
282: "Fd", "Fl", "Fn", "Ft",
283: "Ic", "In", "Li", "Nd",
284: "Nm", "Op", "Ot", "Pa",
285: "Rv", "St", "Va", "Vt",
286: "Xr", "%A", "%B", "%D",
287: "%I", "%J", "%N", "%O",
288: "%P", "%R", "%T", "%V",
289: "Ac", "Ao", "Aq", "At",
290: "Bc", "Bf", "Bo", "Bq",
291: "Bsx", "Bx", "Db", "Dc",
292: "Do", "Dq", "Ec", "Ef",
293: "Em", "Eo", "Fx", "Ms",
294: "No", "Ns", "Nx", "Ox",
295: "Pc", "Pf", "Po", "Pq",
296: "Qc", "Ql", "Qo", "Qq",
297: "Re", "Rs", "Sc", "So",
298: "Sq", "Sm", "Sx", "Sy",
299: "Tn", "Ux", "Xc", "Xo",
300: "Fo", "Fc", "Oo", "Oc",
301: "Bk", "Ek", "Bt", "Hf",
302: "Fr", "Ud", "Lb", "Lp",
303: "Lk", "Mt", "Brq", "Bro",
304: "Brc", "%C", "Es", "En",
1.299 ! schwarze 305: "Dx", "%Q", "%U", "Ta",
! 306: NULL,
1.294 schwarze 307: "TH", "SH", "SS", "TP",
308: "LP", "PP", "P", "IP",
309: "HP", "SM", "SB", "BI",
310: "IB", "BR", "RB", "R",
311: "B", "I", "IR", "RI",
1.299 ! schwarze 312: "nf", "fi",
1.294 schwarze 313: "RE", "RS", "DT", "UC",
1.297 schwarze 314: "PD", "AT", "in",
1.294 schwarze 315: "OP", "EX", "EE", "UR",
1.298 schwarze 316: "UE", NULL
1.294 schwarze 317: };
318: const char *const *roff_name = __roff_name;
319:
320: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 321: { roff_br, NULL, NULL, 0 }, /* br */
1.297 schwarze 322: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 323: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.299 ! schwarze 324: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.296 schwarze 325: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 326: { roff_unsupp, NULL, NULL, 0 }, /* ab */
327: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
328: { roff_line_ignore, NULL, NULL, 0 }, /* af */
329: { roff_unsupp, NULL, NULL, 0 }, /* aln */
330: { roff_unsupp, NULL, NULL, 0 }, /* als */
331: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
332: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
333: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
334: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
335: { roff_ds, NULL, NULL, 0 }, /* as */
336: { roff_ds, NULL, NULL, 0 }, /* as1 */
337: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
338: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
339: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
340: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
341: { roff_unsupp, NULL, NULL, 0 }, /* blm */
342: { roff_unsupp, NULL, NULL, 0 }, /* box */
343: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
344: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
345: { roff_unsupp, NULL, NULL, 0 }, /* BP */
346: { roff_unsupp, NULL, NULL, 0 }, /* break */
347: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
348: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 349: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 350: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
351: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
352: { roff_cc, NULL, NULL, 0 }, /* cc */
353: { roff_line_ignore, NULL, NULL, 0 }, /* ce */
354: { roff_insec, NULL, NULL, 0 }, /* cf */
355: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
356: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
357: { roff_unsupp, NULL, NULL, 0 }, /* char */
358: { roff_unsupp, NULL, NULL, 0 }, /* chop */
359: { roff_line_ignore, NULL, NULL, 0 }, /* class */
360: { roff_insec, NULL, NULL, 0 }, /* close */
361: { roff_unsupp, NULL, NULL, 0 }, /* CL */
362: { roff_line_ignore, NULL, NULL, 0 }, /* color */
363: { roff_unsupp, NULL, NULL, 0 }, /* composite */
364: { roff_unsupp, NULL, NULL, 0 }, /* continue */
365: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
366: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
367: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
368: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
369: { roff_unsupp, NULL, NULL, 0 }, /* da */
370: { roff_unsupp, NULL, NULL, 0 }, /* dch */
371: { roff_Dd, NULL, NULL, 0 }, /* Dd */
372: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
373: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
374: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
375: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
376: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
377: { roff_unsupp, NULL, NULL, 0 }, /* device */
378: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
379: { roff_unsupp, NULL, NULL, 0 }, /* di */
380: { roff_unsupp, NULL, NULL, 0 }, /* do */
381: { roff_ds, NULL, NULL, 0 }, /* ds */
382: { roff_ds, NULL, NULL, 0 }, /* ds1 */
383: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
384: { roff_unsupp, NULL, NULL, 0 }, /* dt */
385: { roff_unsupp, NULL, NULL, 0 }, /* ec */
386: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
387: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
388: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
389: { roff_unsupp, NULL, NULL, 0 }, /* em */
390: { roff_EN, NULL, NULL, 0 }, /* EN */
391: { roff_unsupp, NULL, NULL, 0 }, /* eo */
392: { roff_unsupp, NULL, NULL, 0 }, /* EP */
393: { roff_EQ, NULL, NULL, 0 }, /* EQ */
394: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
395: { roff_unsupp, NULL, NULL, 0 }, /* ev */
396: { roff_unsupp, NULL, NULL, 0 }, /* evc */
397: { roff_unsupp, NULL, NULL, 0 }, /* ex */
398: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
399: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
400: { roff_unsupp, NULL, NULL, 0 }, /* fc */
401: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
402: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
403: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
404: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
405: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
406: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
407: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
408: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
409: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
410: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
411: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
412: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
413: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
414: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
415: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
416: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
417: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
418: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
419: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
420: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
421: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
422: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
423: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
424: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
425: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
426: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
427: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
428: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
429: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
430: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
431: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
432: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
433: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
434: { roff_unsupp, NULL, NULL, 0 }, /* index */
435: { roff_it, NULL, NULL, 0 }, /* it */
436: { roff_unsupp, NULL, NULL, 0 }, /* itc */
437: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
438: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
439: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
440: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
441: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
442: { roff_unsupp, NULL, NULL, 0 }, /* lc */
443: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
444: { roff_unsupp, NULL, NULL, 0 }, /* lds */
445: { roff_unsupp, NULL, NULL, 0 }, /* length */
446: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
447: { roff_insec, NULL, NULL, 0 }, /* lf */
448: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
449: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
450: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
451: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
452: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
453: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
454: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
455: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
456: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
457: { roff_line_ignore, NULL, NULL, 0 }, /* mc */
458: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
459: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
460: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
461: { roff_insec, NULL, NULL, 0 }, /* mso */
462: { roff_line_ignore, NULL, NULL, 0 }, /* na */
463: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
464: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
465: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
466: { roff_unsupp, NULL, NULL, 0 }, /* nm */
467: { roff_unsupp, NULL, NULL, 0 }, /* nn */
468: { roff_unsupp, NULL, NULL, 0 }, /* nop */
469: { roff_nr, NULL, NULL, 0 }, /* nr */
470: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
471: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
472: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
473: { roff_insec, NULL, NULL, 0 }, /* nx */
474: { roff_insec, NULL, NULL, 0 }, /* open */
475: { roff_insec, NULL, NULL, 0 }, /* opena */
476: { roff_line_ignore, NULL, NULL, 0 }, /* os */
477: { roff_unsupp, NULL, NULL, 0 }, /* output */
478: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
479: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
480: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
481: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
482: { roff_insec, NULL, NULL, 0 }, /* pi */
483: { roff_unsupp, NULL, NULL, 0 }, /* PI */
484: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
485: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
486: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
487: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
488: { roff_line_ignore, NULL, NULL, 0 }, /* po */
489: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
490: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
491: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
492: { roff_insec, NULL, NULL, 0 }, /* pso */
493: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
494: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
495: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
496: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
497: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
498: { roff_unsupp, NULL, NULL, 0 }, /* return */
499: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
500: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
501: { roff_line_ignore, NULL, NULL, 0 }, /* rj */
502: { roff_rm, NULL, NULL, 0 }, /* rm */
503: { roff_unsupp, NULL, NULL, 0 }, /* rn */
504: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
505: { roff_rr, NULL, NULL, 0 }, /* rr */
506: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
507: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
508: { roff_unsupp, NULL, NULL, 0 }, /* schar */
509: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
510: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
511: { roff_unsupp, NULL, NULL, 0 }, /* shift */
512: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
513: { roff_so, NULL, NULL, 0 }, /* so */
514: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
515: { roff_line_ignore, NULL, NULL, 0 }, /* special */
516: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
517: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
518: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
519: { roff_unsupp, NULL, NULL, 0 }, /* substring */
520: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
521: { roff_insec, NULL, NULL, 0 }, /* sy */
522: { roff_T_, NULL, NULL, 0 }, /* T& */
523: { roff_unsupp, NULL, NULL, 0 }, /* ta */
524: { roff_unsupp, NULL, NULL, 0 }, /* tc */
525: { roff_TE, NULL, NULL, 0 }, /* TE */
526: { roff_TH, NULL, NULL, 0 }, /* TH */
527: { roff_unsupp, NULL, NULL, 0 }, /* ti */
528: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
529: { roff_unsupp, NULL, NULL, 0 }, /* tl */
530: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
531: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
532: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
533: { roff_tr, NULL, NULL, 0 }, /* tr */
534: { roff_line_ignore, NULL, NULL, 0 }, /* track */
535: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
536: { roff_insec, NULL, NULL, 0 }, /* trf */
537: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
538: { roff_unsupp, NULL, NULL, 0 }, /* trin */
539: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
540: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
541: { roff_TS, NULL, NULL, 0 }, /* TS */
542: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
543: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
544: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
545: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
546: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
547: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
548: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
549: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
550: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
551: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
552: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
553: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
554: { roff_unsupp, NULL, NULL, 0 }, /* wh */
555: { roff_unsupp, NULL, NULL, 0 }, /* while */
556: { roff_insec, NULL, NULL, 0 }, /* write */
557: { roff_insec, NULL, NULL, 0 }, /* writec */
558: { roff_insec, NULL, NULL, 0 }, /* writem */
559: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
560: { roff_cblock, NULL, NULL, 0 }, /* . */
561: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 562: };
563:
1.200 schwarze 564: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.175 schwarze 565: const char *const __mdoc_reserved[] = {
566: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
567: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
568: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
569: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.200 schwarze 570: "Dt", "Dv", "Dx", "D1",
571: "Ec", "Ed", "Ef", "Ek", "El", "Em",
572: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.175 schwarze 573: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.200 schwarze 574: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
575: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.175 schwarze 576: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.200 schwarze 577: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
578: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
579: "Sc", "Sh", "Sm", "So", "Sq",
1.175 schwarze 580: "Ss", "St", "Sx", "Sy",
581: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.200 schwarze 582: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.175 schwarze 583: "%P", "%Q", "%R", "%T", "%U", "%V",
584: NULL
585: };
586:
1.200 schwarze 587: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.175 schwarze 588: const char *const __man_reserved[] = {
1.200 schwarze 589: "AT", "B", "BI", "BR", "DT",
590: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
591: "LP", "OP", "P", "PD", "PP",
592: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
593: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.175 schwarze 594: NULL
595: };
596:
1.141 kristaps 597: /* Array of injected predefined strings. */
598: #define PREDEFS_MAX 38
599: static const struct predef predefs[PREDEFS_MAX] = {
600: #include "predefs.in"
601: };
602:
1.178 schwarze 603: static int roffit_lines; /* number of lines to delay */
604: static char *roffit_macro; /* nil-terminated macro line */
605:
1.207 schwarze 606:
1.266 schwarze 607: /* --- request table ------------------------------------------------------ */
608:
1.295 schwarze 609: struct ohash *
610: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 611: {
1.295 schwarze 612: struct ohash *htab;
613: struct roffreq *req;
614: enum roff_tok tok;
615: size_t sz;
616: unsigned int slot;
1.85 kristaps 617:
1.295 schwarze 618: htab = mandoc_malloc(sizeof(*htab));
619: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 620:
1.295 schwarze 621: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 622: if (roff_name[tok] == NULL)
623: continue;
1.295 schwarze 624: sz = strlen(roff_name[tok]);
625: req = mandoc_malloc(sizeof(*req) + sz + 1);
626: req->tok = tok;
627: memcpy(req->name, roff_name[tok], sz + 1);
628: slot = ohash_qlookup(htab, req->name);
629: ohash_insert(htab, slot, req);
1.85 kristaps 630: }
1.295 schwarze 631: return htab;
1.85 kristaps 632: }
633:
1.295 schwarze 634: void
635: roffhash_free(struct ohash *htab)
1.67 kristaps 636: {
1.295 schwarze 637: struct roffreq *req;
638: unsigned int slot;
1.67 kristaps 639:
1.295 schwarze 640: if (htab == NULL)
641: return;
642: for (req = ohash_first(htab, &slot); req != NULL;
643: req = ohash_next(htab, &slot))
644: free(req);
645: ohash_delete(htab);
646: free(htab);
647: }
648:
649: enum roff_tok
650: roffhash_find(struct ohash *htab, const char *name, size_t sz)
651: {
652: struct roffreq *req;
653: const char *end;
654:
655: if (sz) {
656: end = name + sz;
657: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
658: } else
659: req = ohash_find(htab, ohash_qlookup(htab, name));
660: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 661: }
662:
1.266 schwarze 663: /* --- stack of request blocks -------------------------------------------- */
664:
1.67 kristaps 665: /*
666: * Pop the current node off of the stack of roff instructions currently
667: * pending.
668: */
669: static void
670: roffnode_pop(struct roff *r)
671: {
672: struct roffnode *p;
673:
1.75 kristaps 674: assert(r->last);
1.207 schwarze 675: p = r->last;
1.82 kristaps 676:
1.75 kristaps 677: r->last = r->last->parent;
1.106 kristaps 678: free(p->name);
679: free(p->end);
1.67 kristaps 680: free(p);
681: }
682:
683: /*
684: * Push a roff node onto the instruction stack. This must later be
685: * removed with roffnode_pop().
686: */
1.98 schwarze 687: static void
1.294 schwarze 688: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 689: int line, int col)
1.67 kristaps 690: {
691: struct roffnode *p;
692:
1.98 schwarze 693: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 694: p->tok = tok;
1.106 kristaps 695: if (name)
696: p->name = mandoc_strdup(name);
1.67 kristaps 697: p->parent = r->last;
698: p->line = line;
699: p->col = col;
1.198 schwarze 700: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 701:
702: r->last = p;
703: }
704:
1.266 schwarze 705: /* --- roff parser state data management ---------------------------------- */
706:
1.67 kristaps 707: static void
708: roff_free1(struct roff *r)
709: {
1.176 schwarze 710: struct tbl_node *tbl;
1.125 kristaps 711: struct eqn_node *e;
1.167 kristaps 712: int i;
1.67 kristaps 713:
1.176 schwarze 714: while (NULL != (tbl = r->first_tbl)) {
715: r->first_tbl = tbl->next;
716: tbl_free(tbl);
1.109 kristaps 717: }
1.113 kristaps 718: r->first_tbl = r->last_tbl = r->tbl = NULL;
719:
1.125 kristaps 720: while (NULL != (e = r->first_eqn)) {
721: r->first_eqn = e->next;
722: eqn_free(e);
723: }
724: r->first_eqn = r->last_eqn = r->eqn = NULL;
725:
1.67 kristaps 726: while (r->last)
727: roffnode_pop(r);
1.109 kristaps 728:
1.223 schwarze 729: free (r->rstack);
730: r->rstack = NULL;
731: r->rstacksz = 0;
732: r->rstackpos = -1;
733:
734: roff_freereg(r->regtab);
735: r->regtab = NULL;
736:
1.167 kristaps 737: roff_freestr(r->strtab);
738: roff_freestr(r->xmbtab);
739: r->strtab = r->xmbtab = NULL;
740:
741: if (r->xtab)
742: for (i = 0; i < 128; i++)
743: free(r->xtab[i].p);
744: free(r->xtab);
745: r->xtab = NULL;
1.67 kristaps 746: }
747:
748: void
749: roff_reset(struct roff *r)
750: {
751: roff_free1(r);
1.227 schwarze 752: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.174 kristaps 753: r->control = 0;
1.67 kristaps 754: }
755:
756: void
757: roff_free(struct roff *r)
758: {
759: roff_free1(r);
1.295 schwarze 760: roffhash_free(r->reqtab);
1.67 kristaps 761: free(r);
762: }
763:
764: struct roff *
1.279 schwarze 765: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 766: {
767: struct roff *r;
768:
1.98 schwarze 769: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 770: r->parse = parse;
1.295 schwarze 771: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.199 schwarze 772: r->options = options;
1.227 schwarze 773: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 774: r->rstackpos = -1;
1.277 schwarze 775: return r;
1.265 schwarze 776: }
777:
1.266 schwarze 778: /* --- syntax tree state data management ---------------------------------- */
779:
1.265 schwarze 780: static void
781: roff_man_free1(struct roff_man *man)
782: {
783:
1.266 schwarze 784: if (man->first != NULL)
785: roff_node_delete(man, man->first);
1.265 schwarze 786: free(man->meta.msec);
787: free(man->meta.vol);
788: free(man->meta.os);
789: free(man->meta.arch);
790: free(man->meta.title);
791: free(man->meta.name);
792: free(man->meta.date);
793: }
794:
795: static void
796: roff_man_alloc1(struct roff_man *man)
797: {
798:
799: memset(&man->meta, 0, sizeof(man->meta));
800: man->first = mandoc_calloc(1, sizeof(*man->first));
801: man->first->type = ROFFT_ROOT;
802: man->last = man->first;
803: man->last_es = NULL;
804: man->flags = 0;
805: man->macroset = MACROSET_NONE;
806: man->lastsec = man->lastnamed = SEC_NONE;
807: man->next = ROFF_NEXT_CHILD;
808: }
809:
810: void
811: roff_man_reset(struct roff_man *man)
812: {
813:
814: roff_man_free1(man);
815: roff_man_alloc1(man);
816: }
817:
818: void
819: roff_man_free(struct roff_man *man)
820: {
821:
822: roff_man_free1(man);
823: free(man);
824: }
825:
826: struct roff_man *
827: roff_man_alloc(struct roff *roff, struct mparse *parse,
828: const char *defos, int quick)
829: {
830: struct roff_man *man;
831:
832: man = mandoc_calloc(1, sizeof(*man));
833: man->parse = parse;
834: man->roff = roff;
835: man->defos = defos;
836: man->quick = quick;
837: roff_man_alloc1(man);
1.296 schwarze 838: roff->man = man;
1.277 schwarze 839: return man;
1.67 kristaps 840: }
841:
1.266 schwarze 842: /* --- syntax tree handling ----------------------------------------------- */
843:
844: struct roff_node *
845: roff_node_alloc(struct roff_man *man, int line, int pos,
846: enum roff_type type, int tok)
847: {
848: struct roff_node *n;
849:
850: n = mandoc_calloc(1, sizeof(*n));
851: n->line = line;
852: n->pos = pos;
853: n->tok = tok;
854: n->type = type;
855: n->sec = man->lastsec;
856:
857: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 858: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 859: else
1.285 schwarze 860: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 861: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 862: n->flags |= NODE_LINE;
1.266 schwarze 863: man->flags &= ~MDOC_NEWLINE;
864:
1.277 schwarze 865: return n;
1.266 schwarze 866: }
867:
868: void
869: roff_node_append(struct roff_man *man, struct roff_node *n)
870: {
871:
872: switch (man->next) {
873: case ROFF_NEXT_SIBLING:
1.281 schwarze 874: if (man->last->next != NULL) {
875: n->next = man->last->next;
876: man->last->next->prev = n;
877: } else
878: man->last->parent->last = n;
1.266 schwarze 879: man->last->next = n;
880: n->prev = man->last;
881: n->parent = man->last->parent;
882: break;
883: case ROFF_NEXT_CHILD:
1.287 schwarze 884: if (man->last->child != NULL) {
885: n->next = man->last->child;
886: man->last->child->prev = n;
887: } else
888: man->last->last = n;
1.266 schwarze 889: man->last->child = n;
890: n->parent = man->last;
891: break;
892: default:
893: abort();
894: }
1.282 schwarze 895: man->last = n;
1.266 schwarze 896:
897: switch (n->type) {
898: case ROFFT_HEAD:
899: n->parent->head = n;
900: break;
901: case ROFFT_BODY:
1.282 schwarze 902: if (n->end != ENDBODY_NOT)
903: return;
1.266 schwarze 904: n->parent->body = n;
905: break;
906: case ROFFT_TAIL:
907: n->parent->tail = n;
908: break;
909: default:
1.282 schwarze 910: return;
1.266 schwarze 911: }
1.282 schwarze 912:
913: /*
914: * Copy over the normalised-data pointer of our parent. Not
915: * everybody has one, but copying a null pointer is fine.
916: */
917:
918: n->norm = n->parent->norm;
919: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 920: }
921:
1.267 schwarze 922: void
923: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
924: {
925: struct roff_node *n;
926:
927: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
928: n->string = roff_strdup(man->roff, word);
929: roff_node_append(man, n);
1.286 schwarze 930: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 931: man->next = ROFF_NEXT_SIBLING;
932: }
933:
934: void
935: roff_word_append(struct roff_man *man, const char *word)
936: {
937: struct roff_node *n;
938: char *addstr, *newstr;
939:
940: n = man->last;
941: addstr = roff_strdup(man->roff, word);
942: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
943: free(addstr);
944: free(n->string);
945: n->string = newstr;
946: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 947: }
948:
949: void
950: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
951: {
952: struct roff_node *n;
953:
954: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
955: roff_node_append(man, n);
956: man->next = ROFF_NEXT_CHILD;
957: }
958:
959: struct roff_node *
960: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
961: {
962: struct roff_node *n;
963:
964: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
965: roff_node_append(man, n);
966: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 967: return n;
1.267 schwarze 968: }
969:
1.266 schwarze 970: struct roff_node *
971: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
972: {
973: struct roff_node *n;
974:
975: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
976: roff_node_append(man, n);
977: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 978: return n;
1.266 schwarze 979: }
980:
981: struct roff_node *
982: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
983: {
984: struct roff_node *n;
985:
986: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
987: roff_node_append(man, n);
988: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 989: return n;
1.267 schwarze 990: }
991:
992: void
993: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
994: {
995: struct roff_node *n;
996:
997: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
998: n->eqn = eqn;
999: if (eqn->ln > man->last->line)
1.285 schwarze 1000: n->flags |= NODE_LINE;
1.267 schwarze 1001: roff_node_append(man, n);
1002: man->next = ROFF_NEXT_SIBLING;
1003: }
1004:
1005: void
1006: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1007: {
1008: struct roff_node *n;
1009:
1010: if (man->macroset == MACROSET_MAN)
1011: man_breakscope(man, TOKEN_NONE);
1012: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1013: n->span = tbl;
1014: roff_node_append(man, n);
1.286 schwarze 1015: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 1016: man->next = ROFF_NEXT_SIBLING;
1.266 schwarze 1017: }
1018:
1019: void
1020: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1021: {
1022:
1023: /* Adjust siblings. */
1024:
1025: if (n->prev)
1026: n->prev->next = n->next;
1027: if (n->next)
1028: n->next->prev = n->prev;
1029:
1030: /* Adjust parent. */
1031:
1032: if (n->parent != NULL) {
1033: if (n->parent->child == n)
1034: n->parent->child = n->next;
1035: if (n->parent->last == n)
1036: n->parent->last = n->prev;
1037: }
1038:
1039: /* Adjust parse point. */
1040:
1041: if (man == NULL)
1042: return;
1043: if (man->last == n) {
1044: if (n->prev == NULL) {
1045: man->last = n->parent;
1046: man->next = ROFF_NEXT_CHILD;
1047: } else {
1048: man->last = n->prev;
1049: man->next = ROFF_NEXT_SIBLING;
1050: }
1051: }
1052: if (man->first == n)
1053: man->first = NULL;
1054: }
1055:
1056: void
1057: roff_node_free(struct roff_node *n)
1058: {
1059:
1060: if (n->args != NULL)
1061: mdoc_argv_free(n->args);
1062: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1063: free(n->norm);
1064: free(n->string);
1065: free(n);
1066: }
1067:
1068: void
1069: roff_node_delete(struct roff_man *man, struct roff_node *n)
1070: {
1071:
1072: while (n->child != NULL)
1073: roff_node_delete(man, n->child);
1074: roff_node_unlink(man, n);
1075: roff_node_free(n);
1.269 schwarze 1076: }
1077:
1078: void
1079: deroff(char **dest, const struct roff_node *n)
1080: {
1081: char *cp;
1082: size_t sz;
1083:
1084: if (n->type != ROFFT_TEXT) {
1085: for (n = n->child; n != NULL; n = n->next)
1086: deroff(dest, n);
1087: return;
1088: }
1089:
1.288 schwarze 1090: /* Skip leading whitespace. */
1.269 schwarze 1091:
1.288 schwarze 1092: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1093: if (cp[0] == '\\' && cp[1] != '\0' &&
1094: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1095: cp++;
1.288 schwarze 1096: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1097: break;
1098: }
1099:
1.289 schwarze 1100: /* Skip trailing backslash. */
1101:
1102: sz = strlen(cp);
1.290 schwarze 1103: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1104: sz--;
1105:
1.269 schwarze 1106: /* Skip trailing whitespace. */
1107:
1.289 schwarze 1108: for (; sz; sz--)
1.269 schwarze 1109: if ( ! isspace((unsigned char)cp[sz-1]))
1110: break;
1111:
1112: /* Skip empty strings. */
1113:
1114: if (sz == 0)
1115: return;
1116:
1117: if (*dest == NULL) {
1118: *dest = mandoc_strndup(cp, sz);
1119: return;
1120: }
1121:
1122: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1123: free(*dest);
1124: *dest = cp;
1.266 schwarze 1125: }
1126:
1127: /* --- main functions of the roff parser ---------------------------------- */
1128:
1.94 kristaps 1129: /*
1.206 schwarze 1130: * In the current line, expand escape sequences that tend to get
1131: * used in numerical expressions and conditional requests.
1132: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1133: */
1.172 schwarze 1134: static enum rofferr
1.238 schwarze 1135: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1136: {
1.208 schwarze 1137: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1138: const char *start; /* start of the string to process */
1.209 schwarze 1139: char *stesc; /* start of an escape sequence ('\\') */
1.108 schwarze 1140: const char *stnam; /* start of the name, after "[(*" */
1141: const char *cp; /* end of the name, e.g. before ']' */
1142: const char *res; /* the string to be substituted */
1.238 schwarze 1143: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1144: size_t maxl; /* expected length of the escape name */
1145: size_t naml; /* actual length of the escape name */
1.237 schwarze 1146: enum mandoc_esc esc; /* type of the escape sequence */
1147: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1148: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1149: int npos; /* position in numeric expression */
1.218 schwarze 1150: int arg_complete; /* argument not interrupted by eol */
1.206 schwarze 1151: char term; /* character terminating the escape */
1.94 kristaps 1152:
1.170 schwarze 1153: expand_count = 0;
1.238 schwarze 1154: start = buf->buf + pos;
1.205 schwarze 1155: stesc = strchr(start, '\0') - 1;
1156: while (stesc-- > start) {
1.170 schwarze 1157:
1.205 schwarze 1158: /* Search backwards for the next backslash. */
1159:
1.238 schwarze 1160: if (*stesc != '\\')
1.205 schwarze 1161: continue;
1162:
1163: /* If it is escaped, skip it. */
1164:
1165: for (cp = stesc - 1; cp >= start; cp--)
1.238 schwarze 1166: if (*cp != '\\')
1.205 schwarze 1167: break;
1168:
1.238 schwarze 1169: if ((stesc - cp) % 2 == 0) {
1.209 schwarze 1170: stesc = (char *)cp;
1.205 schwarze 1171: continue;
1172: }
1.108 schwarze 1173:
1.206 schwarze 1174: /* Decide whether to expand or to check only. */
1.108 schwarze 1175:
1.206 schwarze 1176: term = '\0';
1.205 schwarze 1177: cp = stesc + 1;
1.181 schwarze 1178: switch (*cp) {
1.207 schwarze 1179: case '*':
1.181 schwarze 1180: res = NULL;
1181: break;
1.207 schwarze 1182: case 'B':
1183: case 'w':
1.206 schwarze 1184: term = cp[1];
1185: /* FALLTHROUGH */
1.207 schwarze 1186: case 'n':
1.181 schwarze 1187: res = ubuf;
1188: break;
1189: default:
1.237 schwarze 1190: esc = mandoc_escape(&cp, &stnam, &inaml);
1191: if (esc == ESCAPE_ERROR ||
1192: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1193: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1194: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1195: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1196: "%.*s", (int)(cp - stesc), stesc);
1.205 schwarze 1197: continue;
1.152 kristaps 1198: }
1199:
1.205 schwarze 1200: if (EXPAND_LIMIT < ++expand_count) {
1201: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1202: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1203: return ROFF_IGN;
1.205 schwarze 1204: }
1.108 schwarze 1205:
1206: /*
1207: * The third character decides the length
1.181 schwarze 1208: * of the name of the string or register.
1.108 schwarze 1209: * Save a pointer to the name.
1210: */
1211:
1.238 schwarze 1212: if (term == '\0') {
1.206 schwarze 1213: switch (*++cp) {
1.207 schwarze 1214: case '\0':
1.206 schwarze 1215: maxl = 0;
1216: break;
1.207 schwarze 1217: case '(':
1.206 schwarze 1218: cp++;
1219: maxl = 2;
1220: break;
1.207 schwarze 1221: case '[':
1.206 schwarze 1222: cp++;
1223: term = ']';
1224: maxl = 0;
1225: break;
1226: default:
1227: maxl = 1;
1228: break;
1229: }
1230: } else {
1231: cp += 2;
1.94 kristaps 1232: maxl = 0;
1233: }
1.108 schwarze 1234: stnam = cp;
1.94 kristaps 1235:
1.108 schwarze 1236: /* Advance to the end of the name. */
1.94 kristaps 1237:
1.253 schwarze 1238: naml = 0;
1.218 schwarze 1239: arg_complete = 1;
1.253 schwarze 1240: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1241: if (*cp == '\0') {
1.219 schwarze 1242: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1243: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1244: arg_complete = 0;
1.206 schwarze 1245: break;
1.153 kristaps 1246: }
1.238 schwarze 1247: if (maxl == 0 && *cp == term) {
1.206 schwarze 1248: cp++;
1.253 schwarze 1249: break;
1250: }
1251: if (*cp++ != '\\' || stesc[1] != 'w') {
1252: naml++;
1253: continue;
1254: }
1255: switch (mandoc_escape(&cp, NULL, NULL)) {
1256: case ESCAPE_SPECIAL:
1257: case ESCAPE_UNICODE:
1258: case ESCAPE_NUMBERED:
1259: case ESCAPE_OVERSTRIKE:
1260: naml++;
1261: break;
1262: default:
1.94 kristaps 1263: break;
1.206 schwarze 1264: }
1.94 kristaps 1265: }
1266:
1.108 schwarze 1267: /*
1268: * Retrieve the replacement string; if it is
1269: * undefined, resume searching for escapes.
1270: */
1271:
1.206 schwarze 1272: switch (stesc[1]) {
1.207 schwarze 1273: case '*':
1.218 schwarze 1274: if (arg_complete)
1275: res = roff_getstrn(r, stnam, naml);
1.206 schwarze 1276: break;
1.207 schwarze 1277: case 'B':
1.206 schwarze 1278: npos = 0;
1.218 schwarze 1279: ubuf[0] = arg_complete &&
1.261 schwarze 1280: roff_evalnum(r, ln, stnam, &npos,
1281: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1282: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1283: ubuf[1] = '\0';
1284: break;
1.207 schwarze 1285: case 'n':
1.218 schwarze 1286: if (arg_complete)
1287: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1288: roff_getregn(r, stnam, naml));
1289: else
1290: ubuf[0] = '\0';
1.206 schwarze 1291: break;
1.207 schwarze 1292: case 'w':
1.218 schwarze 1293: /* use even incomplete args */
1.208 schwarze 1294: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1295: 24 * (int)naml);
1296: break;
1297: }
1.94 kristaps 1298:
1.238 schwarze 1299: if (res == NULL) {
1.219 schwarze 1300: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1301: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1302: "%.*s", (int)naml, stnam);
1.142 kristaps 1303: res = "";
1.246 schwarze 1304: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1305: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1306: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1307: return ROFF_IGN;
1.94 kristaps 1308: }
1309:
1.108 schwarze 1310: /* Replace the escape sequence by the string. */
1311:
1.209 schwarze 1312: *stesc = '\0';
1.238 schwarze 1313: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1314: buf->buf, res, cp) + 1;
1.94 kristaps 1315:
1.205 schwarze 1316: /* Prepare for the next replacement. */
1.94 kristaps 1317:
1.205 schwarze 1318: start = nbuf + pos;
1.238 schwarze 1319: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1320: free(buf->buf);
1321: buf->buf = nbuf;
1.154 kristaps 1322: }
1.277 schwarze 1323: return ROFF_CONT;
1.154 kristaps 1324: }
1325:
1326: /*
1.275 schwarze 1327: * Process text streams.
1.154 kristaps 1328: */
1329: static enum rofferr
1.238 schwarze 1330: roff_parsetext(struct buf *buf, int pos, int *offs)
1.154 kristaps 1331: {
1332: size_t sz;
1333: const char *start;
1.178 schwarze 1334: char *p;
1335: int isz;
1.154 kristaps 1336: enum mandoc_esc esc;
1337:
1.275 schwarze 1338: /* Spring the input line trap. */
1339:
1340: if (roffit_lines == 1) {
1341: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1342: free(buf->buf);
1343: buf->buf = p;
1344: buf->sz = isz + 1;
1345: *offs = 0;
1346: free(roffit_macro);
1347: roffit_lines = 0;
1.277 schwarze 1348: return ROFF_REPARSE;
1.275 schwarze 1349: } else if (roffit_lines > 1)
1350: --roffit_lines;
1351:
1352: /* Convert all breakable hyphens into ASCII_HYPH. */
1353:
1.238 schwarze 1354: start = p = buf->buf + pos;
1.154 kristaps 1355:
1.238 schwarze 1356: while (*p != '\0') {
1.154 kristaps 1357: sz = strcspn(p, "-\\");
1358: p += sz;
1359:
1.238 schwarze 1360: if (*p == '\0')
1.159 kristaps 1361: break;
1362:
1.238 schwarze 1363: if (*p == '\\') {
1.154 kristaps 1364: /* Skip over escapes. */
1365: p++;
1.189 schwarze 1366: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1367: if (esc == ESCAPE_ERROR)
1.154 kristaps 1368: break;
1.264 schwarze 1369: while (*p == '-')
1370: p++;
1.155 kristaps 1371: continue;
1.159 kristaps 1372: } else if (p == start) {
1.158 kristaps 1373: p++;
1.155 kristaps 1374: continue;
1.158 kristaps 1375: }
1.155 kristaps 1376:
1.171 schwarze 1377: if (isalpha((unsigned char)p[-1]) &&
1378: isalpha((unsigned char)p[1]))
1.155 kristaps 1379: *p = ASCII_HYPH;
1380: p++;
1.94 kristaps 1381: }
1.277 schwarze 1382: return ROFF_CONT;
1.94 kristaps 1383: }
1384:
1.67 kristaps 1385: enum rofferr
1.238 schwarze 1386: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1387: {
1.294 schwarze 1388: enum roff_tok t;
1.109 kristaps 1389: enum rofferr e;
1.238 schwarze 1390: int pos; /* parse point */
1.243 schwarze 1391: int spos; /* saved parse point for messages */
1.238 schwarze 1392: int ppos; /* original offset in buf->buf */
1393: int ctl; /* macro line (boolean) */
1394:
1395: ppos = pos = *offs;
1.79 kristaps 1396:
1.230 schwarze 1397: /* Handle in-line equation delimiters. */
1398:
1.236 schwarze 1399: if (r->tbl == NULL &&
1400: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1401: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1402: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1403: if (e == ROFF_REPARSE)
1.277 schwarze 1404: return e;
1.230 schwarze 1405: assert(e == ROFF_CONT);
1406: }
1407:
1408: /* Expand some escape sequences. */
1.94 kristaps 1409:
1.238 schwarze 1410: e = roff_res(r, buf, ln, pos);
1411: if (e == ROFF_IGN)
1.277 schwarze 1412: return e;
1.238 schwarze 1413: assert(e == ROFF_CONT);
1.94 kristaps 1414:
1.238 schwarze 1415: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1416:
1.94 kristaps 1417: /*
1.79 kristaps 1418: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1419: * text through the macro's filter.
1420: * Equations process all content themselves.
1421: * Tables process almost all content themselves, but we want
1422: * to warn about macros before passing it there.
1.79 kristaps 1423: */
1.74 kristaps 1424:
1.252 schwarze 1425: if (r->last != NULL && ! ctl) {
1.78 kristaps 1426: t = r->last->tok;
1.238 schwarze 1427: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1428: if (e == ROFF_IGN)
1.277 schwarze 1429: return e;
1.294 schwarze 1430: assert(e == ROFF_CONT);
1.182 schwarze 1431: }
1.252 schwarze 1432: if (r->eqn != NULL)
1.277 schwarze 1433: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.252 schwarze 1434: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.277 schwarze 1435: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.252 schwarze 1436: if ( ! ctl)
1.277 schwarze 1437: return roff_parsetext(buf, pos, offs);
1.228 schwarze 1438:
1439: /* Skip empty request lines. */
1440:
1.238 schwarze 1441: if (buf->buf[pos] == '"') {
1.228 schwarze 1442: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1443: ln, pos, NULL);
1.277 schwarze 1444: return ROFF_IGN;
1.238 schwarze 1445: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1446: return ROFF_IGN;
1.67 kristaps 1447:
1.79 kristaps 1448: /*
1449: * If a scope is open, go to the child handler for that macro,
1450: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1451: * Don't do so if an equation is open.
1.79 kristaps 1452: */
1.78 kristaps 1453:
1.79 kristaps 1454: if (r->last) {
1455: t = r->last->tok;
1.277 schwarze 1456: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1457: }
1.78 kristaps 1458:
1.243 schwarze 1459: /* No scope is open. This is a new request or macro. */
1460:
1461: spos = pos;
1462: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1463:
1464: /* Tables ignore most macros. */
1465:
1.294 schwarze 1466: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS)) {
1.243 schwarze 1467: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1468: ln, pos, buf->buf + spos);
1.257 schwarze 1469: if (t == ROFF_TS)
1.277 schwarze 1470: return ROFF_IGN;
1.257 schwarze 1471: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1472: pos++;
1.291 schwarze 1473: while (buf->buf[pos] == ' ')
1.257 schwarze 1474: pos++;
1.277 schwarze 1475: return tbl_read(r->tbl, ln, buf->buf, pos);
1.243 schwarze 1476: }
1477:
1.79 kristaps 1478: /*
1.243 schwarze 1479: * This is neither a roff request nor a user-defined macro.
1480: * Let the standard macro set parsers handle it.
1.79 kristaps 1481: */
1.67 kristaps 1482:
1.294 schwarze 1483: if (t == TOKEN_NONE)
1.277 schwarze 1484: return ROFF_CONT;
1.243 schwarze 1485:
1486: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1487:
1.296 schwarze 1488: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1489: }
1490:
1.117 kristaps 1491: void
1.74 kristaps 1492: roff_endparse(struct roff *r)
1493: {
1494:
1.110 kristaps 1495: if (r->last)
1.221 schwarze 1496: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1497: r->last->line, r->last->col,
1.295 schwarze 1498: roff_name[r->last->tok]);
1.117 kristaps 1499:
1.125 kristaps 1500: if (r->eqn) {
1.221 schwarze 1501: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1502: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.151 kristaps 1503: eqn_end(&r->eqn);
1.125 kristaps 1504: }
1505:
1.117 kristaps 1506: if (r->tbl) {
1.221 schwarze 1507: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1508: r->tbl->line, r->tbl->pos, "TS");
1.151 kristaps 1509: tbl_end(&r->tbl);
1.117 kristaps 1510: }
1.67 kristaps 1511: }
1512:
1513: /*
1514: * Parse a roff node's type from the input buffer. This must be in the
1515: * form of ".foo xxx" in the usual way.
1516: */
1.294 schwarze 1517: static enum roff_tok
1.214 schwarze 1518: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1519: {
1.214 schwarze 1520: char *cp;
1.106 kristaps 1521: const char *mac;
1522: size_t maclen;
1.294 schwarze 1523: enum roff_tok t;
1.67 kristaps 1524:
1.214 schwarze 1525: cp = buf + *pos;
1526:
1527: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1528: return TOKEN_NONE;
1.67 kristaps 1529:
1.214 schwarze 1530: mac = cp;
1531: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1532:
1.106 kristaps 1533: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.295 schwarze 1534: ? ROFF_USERDEF : roffhash_find(r->reqtab, mac, maclen);
1.67 kristaps 1535:
1.294 schwarze 1536: if (t != TOKEN_NONE)
1.214 schwarze 1537: *pos = cp - buf;
1.67 kristaps 1538:
1.277 schwarze 1539: return t;
1.67 kristaps 1540: }
1541:
1.266 schwarze 1542: /* --- handling of request blocks ----------------------------------------- */
1543:
1.67 kristaps 1544: static enum rofferr
1.76 kristaps 1545: roff_cblock(ROFF_ARGS)
1.67 kristaps 1546: {
1547:
1.79 kristaps 1548: /*
1549: * A block-close `..' should only be invoked as a child of an
1550: * ignore macro, otherwise raise a warning and just ignore it.
1551: */
1552:
1.238 schwarze 1553: if (r->last == NULL) {
1.221 schwarze 1554: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1555: ln, ppos, "..");
1.277 schwarze 1556: return ROFF_IGN;
1.76 kristaps 1557: }
1.67 kristaps 1558:
1.81 kristaps 1559: switch (r->last->tok) {
1.207 schwarze 1560: case ROFF_am:
1.220 schwarze 1561: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1562: case ROFF_ami:
1563: case ROFF_de:
1.108 schwarze 1564: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1565: case ROFF_dei:
1566: case ROFF_ig:
1.81 kristaps 1567: break;
1568: default:
1.221 schwarze 1569: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1570: ln, ppos, "..");
1.277 schwarze 1571: return ROFF_IGN;
1.76 kristaps 1572: }
1.67 kristaps 1573:
1.238 schwarze 1574: if (buf->buf[pos] != '\0')
1.217 schwarze 1575: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1576: ".. %s", buf->buf + pos);
1.71 kristaps 1577:
1578: roffnode_pop(r);
1.76 kristaps 1579: roffnode_cleanscope(r);
1.277 schwarze 1580: return ROFF_IGN;
1.71 kristaps 1581:
1.67 kristaps 1582: }
1583:
1.76 kristaps 1584: static void
1585: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1586: {
1587:
1.76 kristaps 1588: while (r->last) {
1.173 schwarze 1589: if (--r->last->endspan != 0)
1.76 kristaps 1590: break;
1591: roffnode_pop(r);
1592: }
1.67 kristaps 1593: }
1594:
1.195 schwarze 1595: static void
1596: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1597: {
1598:
1.76 kristaps 1599: if (NULL == r->last) {
1.221 schwarze 1600: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1601: ln, ppos, "\\}");
1.195 schwarze 1602: return;
1.76 kristaps 1603: }
1604:
1.82 kristaps 1605: switch (r->last->tok) {
1.207 schwarze 1606: case ROFF_el:
1607: case ROFF_ie:
1608: case ROFF_if:
1.82 kristaps 1609: break;
1610: default:
1.221 schwarze 1611: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1612: ln, ppos, "\\}");
1.195 schwarze 1613: return;
1.75 kristaps 1614: }
1615:
1.76 kristaps 1616: if (r->last->endspan > -1) {
1.221 schwarze 1617: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1618: ln, ppos, "\\}");
1.195 schwarze 1619: return;
1.76 kristaps 1620: }
1621:
1.75 kristaps 1622: roffnode_pop(r);
1.76 kristaps 1623: roffnode_cleanscope(r);
1.195 schwarze 1624: return;
1.76 kristaps 1625: }
1626:
1627: static enum rofferr
1.80 kristaps 1628: roff_block(ROFF_ARGS)
1.76 kristaps 1629: {
1.220 schwarze 1630: const char *name;
1631: char *iname, *cp;
1.213 schwarze 1632: size_t namesz;
1.106 kristaps 1633:
1.220 schwarze 1634: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1635:
1.238 schwarze 1636: if (tok == ROFF_de1)
1.220 schwarze 1637: tok = ROFF_de;
1.251 schwarze 1638: else if (tok == ROFF_dei1)
1639: tok = ROFF_dei;
1.238 schwarze 1640: else if (tok == ROFF_am1)
1.220 schwarze 1641: tok = ROFF_am;
1.251 schwarze 1642: else if (tok == ROFF_ami1)
1643: tok = ROFF_ami;
1.220 schwarze 1644:
1645: /* Parse the macro name argument. */
1646:
1.238 schwarze 1647: cp = buf->buf + pos;
1648: if (tok == ROFF_ig) {
1.220 schwarze 1649: iname = NULL;
1650: namesz = 0;
1651: } else {
1652: iname = cp;
1653: namesz = roff_getname(r, &cp, ln, ppos);
1654: iname[namesz] = '\0';
1655: }
1.107 kristaps 1656:
1.220 schwarze 1657: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1658:
1.238 schwarze 1659: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1660: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1661: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1662: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1663: "%.*s", (int)namesz, iname);
1664: namesz = 0;
1665: } else
1666: namesz = strlen(name);
1667: } else
1668: name = iname;
1.107 kristaps 1669:
1.238 schwarze 1670: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1671: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1672: ln, ppos, roff_name[tok]);
1.277 schwarze 1673: return ROFF_IGN;
1.220 schwarze 1674: }
1.80 kristaps 1675:
1.106 kristaps 1676: roffnode_push(r, tok, name, ln, ppos);
1677:
1678: /*
1679: * At the beginning of a `de' macro, clear the existing string
1680: * with the same name, if there is one. New content will be
1.193 schwarze 1681: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1682: */
1.107 kristaps 1683:
1.238 schwarze 1684: if (tok == ROFF_de || tok == ROFF_dei)
1.213 schwarze 1685: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.76 kristaps 1686:
1.238 schwarze 1687: if (*cp == '\0')
1.277 schwarze 1688: return ROFF_IGN;
1.78 kristaps 1689:
1.220 schwarze 1690: /* Get the custom end marker. */
1.107 kristaps 1691:
1.220 schwarze 1692: iname = cp;
1.213 schwarze 1693: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1694:
1695: /* Resolve the end marker if it is indirect. */
1696:
1.238 schwarze 1697: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1698: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1699: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1700: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1701: "%.*s", (int)namesz, iname);
1702: namesz = 0;
1703: } else
1704: namesz = strlen(name);
1705: } else
1706: name = iname;
1707:
1.213 schwarze 1708: if (namesz)
1709: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1710:
1.238 schwarze 1711: if (*cp != '\0')
1.217 schwarze 1712: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 1713: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 1714:
1.277 schwarze 1715: return ROFF_IGN;
1.78 kristaps 1716: }
1717:
1718: static enum rofferr
1.80 kristaps 1719: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1720: {
1.294 schwarze 1721: enum roff_tok t;
1.79 kristaps 1722: int i, j;
1723:
1724: /*
1725: * First check whether a custom macro exists at this level. If
1726: * it does, then check against it. This is some of groff's
1727: * stranger behaviours. If we encountered a custom end-scope
1728: * tag and that tag also happens to be a "real" macro, then we
1729: * need to try interpreting it again as a real macro. If it's
1730: * not, then return ignore. Else continue.
1731: */
1732:
1733: if (r->last->end) {
1.130 kristaps 1734: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1735: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1736: break;
1737:
1.238 schwarze 1738: if (r->last->end[j] == '\0' &&
1739: (buf->buf[i] == '\0' ||
1740: buf->buf[i] == ' ' ||
1741: buf->buf[i] == '\t')) {
1.79 kristaps 1742: roffnode_pop(r);
1743: roffnode_cleanscope(r);
1744:
1.238 schwarze 1745: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1746: i++;
1747:
1748: pos = i;
1.238 schwarze 1749: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 1750: TOKEN_NONE)
1.277 schwarze 1751: return ROFF_RERUN;
1752: return ROFF_IGN;
1.79 kristaps 1753: }
1754: }
1755:
1756: /*
1757: * If we have no custom end-query or lookup failed, then try
1758: * pulling it out of the hashtable.
1759: */
1760:
1.238 schwarze 1761: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1762:
1.238 schwarze 1763: if (t != ROFF_cblock) {
1764: if (tok != ROFF_ig)
1765: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1766: return ROFF_IGN;
1.106 kristaps 1767: }
1.79 kristaps 1768:
1.277 schwarze 1769: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1770: }
1771:
1772: static enum rofferr
1.80 kristaps 1773: roff_block_text(ROFF_ARGS)
1.78 kristaps 1774: {
1775:
1.238 schwarze 1776: if (tok != ROFF_ig)
1777: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1778:
1.277 schwarze 1779: return ROFF_IGN;
1.78 kristaps 1780: }
1781:
1782: static enum rofferr
1.82 kristaps 1783: roff_cond_sub(ROFF_ARGS)
1784: {
1.294 schwarze 1785: enum roff_tok t;
1.139 kristaps 1786: char *ep;
1.198 schwarze 1787: int rr;
1.82 kristaps 1788:
1789: rr = r->last->rule;
1.139 kristaps 1790: roffnode_cleanscope(r);
1.238 schwarze 1791: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.82 kristaps 1792:
1.139 kristaps 1793: /*
1.177 schwarze 1794: * Fully handle known macros when they are structurally
1795: * required or when the conditional evaluated to true.
1.87 kristaps 1796: */
1797:
1.294 schwarze 1798: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.277 schwarze 1799: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.144 kristaps 1800:
1.196 schwarze 1801: /*
1802: * If `\}' occurs on a macro line without a preceding macro,
1803: * drop the line completely.
1804: */
1805:
1.238 schwarze 1806: ep = buf->buf + pos;
1807: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1808: rr = 0;
1.196 schwarze 1809:
1.177 schwarze 1810: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1811:
1.238 schwarze 1812: while ((ep = strchr(ep, '\\')) != NULL) {
1813: if (*(++ep) == '}') {
1.197 schwarze 1814: *ep = '&';
1.238 schwarze 1815: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1816: }
1.247 schwarze 1817: if (*ep != '\0')
1818: ++ep;
1.177 schwarze 1819: }
1.277 schwarze 1820: return rr ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 1821: }
1822:
1823: static enum rofferr
1824: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1825: {
1.140 kristaps 1826: char *ep;
1.198 schwarze 1827: int rr;
1.82 kristaps 1828:
1829: rr = r->last->rule;
1.140 kristaps 1830: roffnode_cleanscope(r);
1.82 kristaps 1831:
1.238 schwarze 1832: ep = buf->buf + pos;
1833: while ((ep = strchr(ep, '\\')) != NULL) {
1834: if (*(++ep) == '}') {
1.197 schwarze 1835: *ep = '&';
1.238 schwarze 1836: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1837: }
1.247 schwarze 1838: if (*ep != '\0')
1839: ++ep;
1.78 kristaps 1840: }
1.277 schwarze 1841: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 1842: }
1843:
1.266 schwarze 1844: /* --- handling of numeric and conditional expressions -------------------- */
1845:
1.204 schwarze 1846: /*
1847: * Parse a single signed integer number. Stop at the first non-digit.
1848: * If there is at least one digit, return success and advance the
1849: * parse point, else return failure and let the parse point unchanged.
1850: * Ignore overflows, treat them just like the C language.
1851: */
1.184 schwarze 1852: static int
1.261 schwarze 1853: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 1854: {
1.261 schwarze 1855: int myres, scaled, n, p;
1.206 schwarze 1856:
1857: if (NULL == res)
1858: res = &myres;
1.184 schwarze 1859:
1860: p = *pos;
1861: n = v[p] == '-';
1.261 schwarze 1862: if (n || v[p] == '+')
1.184 schwarze 1863: p++;
1864:
1.261 schwarze 1865: if (flags & ROFFNUM_WHITE)
1866: while (isspace((unsigned char)v[p]))
1867: p++;
1868:
1.184 schwarze 1869: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 1870: *res = 10 * *res + v[p] - '0';
1.184 schwarze 1871: if (p == *pos + n)
1872: return 0;
1873:
1874: if (n)
1875: *res = -*res;
1876:
1.254 schwarze 1877: /* Each number may be followed by one optional scaling unit. */
1878:
1879: switch (v[p]) {
1880: case 'f':
1.261 schwarze 1881: scaled = *res * 65536;
1.254 schwarze 1882: break;
1883: case 'i':
1.261 schwarze 1884: scaled = *res * 240;
1.254 schwarze 1885: break;
1886: case 'c':
1.261 schwarze 1887: scaled = *res * 240 / 2.54;
1.254 schwarze 1888: break;
1889: case 'v':
1890: case 'P':
1.261 schwarze 1891: scaled = *res * 40;
1.254 schwarze 1892: break;
1893: case 'm':
1894: case 'n':
1.261 schwarze 1895: scaled = *res * 24;
1.254 schwarze 1896: break;
1897: case 'p':
1.261 schwarze 1898: scaled = *res * 10 / 3;
1.254 schwarze 1899: break;
1900: case 'u':
1.261 schwarze 1901: scaled = *res;
1.254 schwarze 1902: break;
1903: case 'M':
1.261 schwarze 1904: scaled = *res * 6 / 25;
1.254 schwarze 1905: break;
1906: default:
1.261 schwarze 1907: scaled = *res;
1.254 schwarze 1908: p--;
1909: break;
1910: }
1.261 schwarze 1911: if (flags & ROFFNUM_SCALE)
1912: *res = scaled;
1.254 schwarze 1913:
1914: *pos = p + 1;
1.277 schwarze 1915: return 1;
1.184 schwarze 1916: }
1917:
1.198 schwarze 1918: /*
1919: * Evaluate a string comparison condition.
1920: * The first character is the delimiter.
1921: * Succeed if the string up to its second occurrence
1922: * matches the string up to its third occurence.
1923: * Advance the cursor after the third occurrence
1924: * or lacking that, to the end of the line.
1925: */
1926: static int
1927: roff_evalstrcond(const char *v, int *pos)
1928: {
1929: const char *s1, *s2, *s3;
1930: int match;
1931:
1932: match = 0;
1933: s1 = v + *pos; /* initial delimiter */
1934: s2 = s1 + 1; /* for scanning the first string */
1935: s3 = strchr(s2, *s1); /* for scanning the second string */
1936:
1937: if (NULL == s3) /* found no middle delimiter */
1938: goto out;
1939:
1940: while ('\0' != *++s3) {
1941: if (*s2 != *s3) { /* mismatch */
1942: s3 = strchr(s3, *s1);
1943: break;
1944: }
1945: if (*s3 == *s1) { /* found the final delimiter */
1946: match = 1;
1947: break;
1948: }
1949: s2++;
1950: }
1951:
1952: out:
1953: if (NULL == s3)
1954: s3 = strchr(s2, '\0');
1.242 schwarze 1955: else if (*s3 != '\0')
1.198 schwarze 1956: s3++;
1957: *pos = s3 - v;
1.277 schwarze 1958: return match;
1.198 schwarze 1959: }
1960:
1.204 schwarze 1961: /*
1962: * Evaluate an optionally negated single character, numerical,
1963: * or string condition.
1964: */
1.198 schwarze 1965: static int
1.271 schwarze 1966: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 1967: {
1.271 schwarze 1968: char *cp, *name;
1969: size_t sz;
1.241 schwarze 1970: int number, savepos, wanttrue;
1.88 kristaps 1971:
1.198 schwarze 1972: if ('!' == v[*pos]) {
1973: wanttrue = 0;
1974: (*pos)++;
1975: } else
1976: wanttrue = 1;
1977:
1.88 kristaps 1978: switch (v[*pos]) {
1.240 schwarze 1979: case '\0':
1.277 schwarze 1980: return 0;
1.207 schwarze 1981: case 'n':
1982: case 'o':
1.88 kristaps 1983: (*pos)++;
1.277 schwarze 1984: return wanttrue;
1.207 schwarze 1985: case 'c':
1986: case 'd':
1987: case 'e':
1988: case 't':
1.239 schwarze 1989: case 'v':
1.88 kristaps 1990: (*pos)++;
1.277 schwarze 1991: return !wanttrue;
1.271 schwarze 1992: case 'r':
1993: cp = name = v + ++*pos;
1994: sz = roff_getname(r, &cp, ln, *pos);
1995: *pos = cp - v;
1.277 schwarze 1996: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.88 kristaps 1997: default:
1998: break;
1999: }
2000:
1.241 schwarze 2001: savepos = *pos;
1.261 schwarze 2002: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2003: return (number > 0) == wanttrue;
1.241 schwarze 2004: else if (*pos == savepos)
1.277 schwarze 2005: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2006: else
1.277 schwarze 2007: return 0;
1.88 kristaps 2008: }
2009:
1.74 kristaps 2010: static enum rofferr
1.103 kristaps 2011: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2012: {
1.123 schwarze 2013:
1.277 schwarze 2014: return ROFF_IGN;
1.89 kristaps 2015: }
2016:
1.104 kristaps 2017: static enum rofferr
1.251 schwarze 2018: roff_insec(ROFF_ARGS)
2019: {
2020:
2021: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2022: ln, ppos, roff_name[tok]);
1.277 schwarze 2023: return ROFF_IGN;
1.251 schwarze 2024: }
2025:
2026: static enum rofferr
2027: roff_unsupp(ROFF_ARGS)
2028: {
2029:
2030: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2031: ln, ppos, roff_name[tok]);
1.277 schwarze 2032: return ROFF_IGN;
1.251 schwarze 2033: }
2034:
2035: static enum rofferr
1.82 kristaps 2036: roff_cond(ROFF_ARGS)
1.74 kristaps 2037: {
1.173 schwarze 2038:
2039: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2040:
1.207 schwarze 2041: /*
1.134 kristaps 2042: * An `.el' has no conditional body: it will consume the value
2043: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2044: * defaults to DENY.
1.134 kristaps 2045: *
2046: * If we're not an `el', however, then evaluate the conditional.
2047: */
1.133 kristaps 2048:
1.238 schwarze 2049: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2050: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2051: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2052:
1.134 kristaps 2053: /*
2054: * An if-else will put the NEGATION of the current evaluated
2055: * conditional into the stack of rules.
2056: */
2057:
1.238 schwarze 2058: if (tok == ROFF_ie) {
1.223 schwarze 2059: if (r->rstackpos + 1 == r->rstacksz) {
2060: r->rstacksz += 16;
2061: r->rstack = mandoc_reallocarray(r->rstack,
2062: r->rstacksz, sizeof(int));
1.134 kristaps 2063: }
1.198 schwarze 2064: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2065: }
1.88 kristaps 2066:
2067: /* If the parent has false as its rule, then so do we. */
2068:
1.198 schwarze 2069: if (r->last->parent && !r->last->parent->rule)
2070: r->last->rule = 0;
1.88 kristaps 2071:
2072: /*
1.173 schwarze 2073: * Determine scope.
2074: * If there is nothing on the line after the conditional,
2075: * not even whitespace, use next-line scope.
1.88 kristaps 2076: */
1.74 kristaps 2077:
1.238 schwarze 2078: if (buf->buf[pos] == '\0') {
1.173 schwarze 2079: r->last->endspan = 2;
2080: goto out;
2081: }
2082:
1.238 schwarze 2083: while (buf->buf[pos] == ' ')
1.173 schwarze 2084: pos++;
2085:
2086: /* An opening brace requests multiline scope. */
1.75 kristaps 2087:
1.238 schwarze 2088: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2089: r->last->endspan = -1;
2090: pos += 2;
1.272 schwarze 2091: while (buf->buf[pos] == ' ')
2092: pos++;
1.173 schwarze 2093: goto out;
1.207 schwarze 2094: }
1.74 kristaps 2095:
1.77 kristaps 2096: /*
1.173 schwarze 2097: * Anything else following the conditional causes
2098: * single-line scope. Warn if the scope contains
2099: * nothing but trailing whitespace.
1.77 kristaps 2100: */
2101:
1.238 schwarze 2102: if (buf->buf[pos] == '\0')
1.216 schwarze 2103: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2104: ln, ppos, roff_name[tok]);
1.77 kristaps 2105:
1.173 schwarze 2106: r->last->endspan = 1;
1.74 kristaps 2107:
1.173 schwarze 2108: out:
1.75 kristaps 2109: *offs = pos;
1.277 schwarze 2110: return ROFF_RERUN;
1.83 schwarze 2111: }
2112:
2113: static enum rofferr
1.92 schwarze 2114: roff_ds(ROFF_ARGS)
2115: {
1.212 schwarze 2116: char *string;
2117: const char *name;
2118: size_t namesz;
1.96 kristaps 2119:
1.251 schwarze 2120: /* Ignore groff compatibility mode for now. */
2121:
2122: if (tok == ROFF_ds1)
2123: tok = ROFF_ds;
2124: else if (tok == ROFF_as1)
2125: tok = ROFF_as;
2126:
1.96 kristaps 2127: /*
1.212 schwarze 2128: * The first word is the name of the string.
2129: * If it is empty or terminated by an escape sequence,
2130: * abort the `ds' request without defining anything.
1.96 kristaps 2131: */
1.92 schwarze 2132:
1.238 schwarze 2133: name = string = buf->buf + pos;
2134: if (*name == '\0')
1.277 schwarze 2135: return ROFF_IGN;
1.92 schwarze 2136:
1.212 schwarze 2137: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2138: if (name[namesz] == '\\')
1.277 schwarze 2139: return ROFF_IGN;
1.212 schwarze 2140:
2141: /* Read past the initial double-quote, if any. */
1.238 schwarze 2142: if (*string == '"')
1.92 schwarze 2143: string++;
2144:
1.96 kristaps 2145: /* The rest is the value. */
1.212 schwarze 2146: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2147: ROFF_as == tok);
1.277 schwarze 2148: return ROFF_IGN;
1.92 schwarze 2149: }
2150:
1.204 schwarze 2151: /*
2152: * Parse a single operator, one or two characters long.
2153: * If the operator is recognized, return success and advance the
2154: * parse point, else return failure and let the parse point unchanged.
2155: */
2156: static int
2157: roff_getop(const char *v, int *pos, char *res)
2158: {
2159:
2160: *res = v[*pos];
2161:
2162: switch (*res) {
1.207 schwarze 2163: case '+':
2164: case '-':
2165: case '*':
2166: case '/':
2167: case '%':
2168: case '&':
2169: case ':':
1.204 schwarze 2170: break;
2171: case '<':
2172: switch (v[*pos + 1]) {
1.207 schwarze 2173: case '=':
1.204 schwarze 2174: *res = 'l';
2175: (*pos)++;
2176: break;
1.207 schwarze 2177: case '>':
1.204 schwarze 2178: *res = '!';
2179: (*pos)++;
2180: break;
1.207 schwarze 2181: case '?':
1.204 schwarze 2182: *res = 'i';
2183: (*pos)++;
2184: break;
2185: default:
2186: break;
2187: }
2188: break;
2189: case '>':
2190: switch (v[*pos + 1]) {
1.207 schwarze 2191: case '=':
1.204 schwarze 2192: *res = 'g';
2193: (*pos)++;
2194: break;
1.207 schwarze 2195: case '?':
1.204 schwarze 2196: *res = 'a';
2197: (*pos)++;
2198: break;
2199: default:
2200: break;
2201: }
2202: break;
2203: case '=':
2204: if ('=' == v[*pos + 1])
2205: (*pos)++;
2206: break;
2207: default:
1.277 schwarze 2208: return 0;
1.204 schwarze 2209: }
2210: (*pos)++;
2211:
1.277 schwarze 2212: return *res;
1.204 schwarze 2213: }
2214:
2215: /*
2216: * Evaluate either a parenthesized numeric expression
2217: * or a single signed integer number.
2218: */
2219: static int
1.235 schwarze 2220: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2221: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2222: {
2223:
2224: if ('(' != v[*pos])
1.277 schwarze 2225: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2226:
2227: (*pos)++;
1.261 schwarze 2228: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2229: return 0;
1.204 schwarze 2230:
1.206 schwarze 2231: /*
2232: * Omission of the closing parenthesis
2233: * is an error in validation mode,
2234: * but ignored in evaluation mode.
2235: */
2236:
1.204 schwarze 2237: if (')' == v[*pos])
2238: (*pos)++;
1.206 schwarze 2239: else if (NULL == res)
1.277 schwarze 2240: return 0;
1.204 schwarze 2241:
1.277 schwarze 2242: return 1;
1.204 schwarze 2243: }
2244:
2245: /*
2246: * Evaluate a complete numeric expression.
2247: * Proceed left to right, there is no concept of precedence.
2248: */
2249: static int
1.235 schwarze 2250: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2251: int *pos, int *res, int flags)
1.204 schwarze 2252: {
2253: int mypos, operand2;
2254: char operator;
2255:
2256: if (NULL == pos) {
2257: mypos = 0;
2258: pos = &mypos;
2259: }
2260:
1.261 schwarze 2261: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2262: while (isspace((unsigned char)v[*pos]))
2263: (*pos)++;
2264:
1.261 schwarze 2265: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2266: return 0;
1.204 schwarze 2267:
2268: while (1) {
1.261 schwarze 2269: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2270: while (isspace((unsigned char)v[*pos]))
2271: (*pos)++;
2272:
2273: if ( ! roff_getop(v, pos, &operator))
2274: break;
2275:
1.261 schwarze 2276: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2277: while (isspace((unsigned char)v[*pos]))
2278: (*pos)++;
2279:
1.261 schwarze 2280: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2281: return 0;
1.204 schwarze 2282:
1.261 schwarze 2283: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2284: while (isspace((unsigned char)v[*pos]))
2285: (*pos)++;
1.206 schwarze 2286:
2287: if (NULL == res)
2288: continue;
1.204 schwarze 2289:
2290: switch (operator) {
1.207 schwarze 2291: case '+':
1.204 schwarze 2292: *res += operand2;
2293: break;
1.207 schwarze 2294: case '-':
1.204 schwarze 2295: *res -= operand2;
2296: break;
1.207 schwarze 2297: case '*':
1.204 schwarze 2298: *res *= operand2;
2299: break;
1.207 schwarze 2300: case '/':
1.244 schwarze 2301: if (operand2 == 0) {
1.235 schwarze 2302: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2303: r->parse, ln, *pos, v);
2304: *res = 0;
2305: break;
2306: }
1.204 schwarze 2307: *res /= operand2;
2308: break;
1.207 schwarze 2309: case '%':
1.244 schwarze 2310: if (operand2 == 0) {
2311: mandoc_msg(MANDOCERR_DIVZERO,
2312: r->parse, ln, *pos, v);
2313: *res = 0;
2314: break;
2315: }
1.204 schwarze 2316: *res %= operand2;
2317: break;
1.207 schwarze 2318: case '<':
1.204 schwarze 2319: *res = *res < operand2;
2320: break;
1.207 schwarze 2321: case '>':
1.204 schwarze 2322: *res = *res > operand2;
2323: break;
1.207 schwarze 2324: case 'l':
1.204 schwarze 2325: *res = *res <= operand2;
2326: break;
1.207 schwarze 2327: case 'g':
1.204 schwarze 2328: *res = *res >= operand2;
2329: break;
1.207 schwarze 2330: case '=':
1.204 schwarze 2331: *res = *res == operand2;
2332: break;
1.207 schwarze 2333: case '!':
1.204 schwarze 2334: *res = *res != operand2;
2335: break;
1.207 schwarze 2336: case '&':
1.204 schwarze 2337: *res = *res && operand2;
2338: break;
1.207 schwarze 2339: case ':':
1.204 schwarze 2340: *res = *res || operand2;
2341: break;
1.207 schwarze 2342: case 'i':
1.204 schwarze 2343: if (operand2 < *res)
2344: *res = operand2;
2345: break;
1.207 schwarze 2346: case 'a':
1.204 schwarze 2347: if (operand2 > *res)
2348: *res = operand2;
2349: break;
2350: default:
2351: abort();
2352: }
2353: }
1.277 schwarze 2354: return 1;
1.204 schwarze 2355: }
2356:
1.266 schwarze 2357: /* --- register management ------------------------------------------------ */
2358:
1.180 schwarze 2359: void
1.187 schwarze 2360: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2361: {
1.180 schwarze 2362: struct roffreg *reg;
2363:
2364: /* Search for an existing register with the same name. */
2365: reg = r->regtab;
2366:
2367: while (reg && strcmp(name, reg->key.p))
2368: reg = reg->next;
1.147 kristaps 2369:
1.180 schwarze 2370: if (NULL == reg) {
2371: /* Create a new register. */
2372: reg = mandoc_malloc(sizeof(struct roffreg));
2373: reg->key.p = mandoc_strdup(name);
2374: reg->key.sz = strlen(name);
1.187 schwarze 2375: reg->val = 0;
1.180 schwarze 2376: reg->next = r->regtab;
2377: r->regtab = reg;
2378: }
2379:
1.187 schwarze 2380: if ('+' == sign)
2381: reg->val += val;
2382: else if ('-' == sign)
2383: reg->val -= val;
2384: else
2385: reg->val = val;
1.147 kristaps 2386: }
2387:
1.192 schwarze 2388: /*
2389: * Handle some predefined read-only number registers.
2390: * For now, return -1 if the requested register is not predefined;
2391: * in case a predefined read-only register having the value -1
2392: * were to turn up, another special value would have to be chosen.
2393: */
2394: static int
1.273 schwarze 2395: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2396: {
2397:
2398: switch (*name) {
1.273 schwarze 2399: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2400: return r->argc;
1.207 schwarze 2401: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2402: return 0;
1.207 schwarze 2403: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2404: return 1;
1.207 schwarze 2405: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2406: return 24;
1.207 schwarze 2407: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2408: return 0;
1.207 schwarze 2409: case 'T': /* Some output device is always defined. */
1.277 schwarze 2410: return 1;
1.207 schwarze 2411: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2412: return 40;
1.192 schwarze 2413: default:
1.277 schwarze 2414: return -1;
1.192 schwarze 2415: }
2416: }
2417:
1.181 schwarze 2418: int
1.180 schwarze 2419: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2420: {
1.180 schwarze 2421: struct roffreg *reg;
1.192 schwarze 2422: int val;
2423:
2424: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2425: val = roff_getregro(r, name + 1);
1.192 schwarze 2426: if (-1 != val)
1.277 schwarze 2427: return val;
1.192 schwarze 2428: }
1.180 schwarze 2429:
2430: for (reg = r->regtab; reg; reg = reg->next)
2431: if (0 == strcmp(name, reg->key.p))
1.277 schwarze 2432: return reg->val;
1.181 schwarze 2433:
1.277 schwarze 2434: return 0;
1.181 schwarze 2435: }
2436:
2437: static int
2438: roff_getregn(const struct roff *r, const char *name, size_t len)
2439: {
2440: struct roffreg *reg;
1.192 schwarze 2441: int val;
2442:
2443: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2444: val = roff_getregro(r, name + 1);
1.192 schwarze 2445: if (-1 != val)
1.277 schwarze 2446: return val;
1.192 schwarze 2447: }
1.181 schwarze 2448:
2449: for (reg = r->regtab; reg; reg = reg->next)
2450: if (len == reg->key.sz &&
2451: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2452: return reg->val;
1.271 schwarze 2453:
1.277 schwarze 2454: return 0;
1.271 schwarze 2455: }
2456:
2457: static int
2458: roff_hasregn(const struct roff *r, const char *name, size_t len)
2459: {
2460: struct roffreg *reg;
2461: int val;
2462:
2463: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2464: val = roff_getregro(r, name + 1);
1.271 schwarze 2465: if (-1 != val)
1.277 schwarze 2466: return 1;
1.271 schwarze 2467: }
2468:
2469: for (reg = r->regtab; reg; reg = reg->next)
2470: if (len == reg->key.sz &&
2471: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2472: return 1;
1.147 kristaps 2473:
1.277 schwarze 2474: return 0;
1.147 kristaps 2475: }
2476:
1.180 schwarze 2477: static void
2478: roff_freereg(struct roffreg *reg)
1.147 kristaps 2479: {
1.180 schwarze 2480: struct roffreg *old_reg;
1.147 kristaps 2481:
1.180 schwarze 2482: while (NULL != reg) {
2483: free(reg->key.p);
2484: old_reg = reg;
2485: reg = reg->next;
2486: free(old_reg);
2487: }
1.147 kristaps 2488: }
1.92 schwarze 2489:
2490: static enum rofferr
1.89 kristaps 2491: roff_nr(ROFF_ARGS)
1.83 schwarze 2492: {
1.212 schwarze 2493: char *key, *val;
2494: size_t keysz;
1.138 kristaps 2495: int iv;
1.187 schwarze 2496: char sign;
1.89 kristaps 2497:
1.238 schwarze 2498: key = val = buf->buf + pos;
2499: if (*key == '\0')
1.277 schwarze 2500: return ROFF_IGN;
1.212 schwarze 2501:
2502: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2503: if (key[keysz] == '\\')
1.277 schwarze 2504: return ROFF_IGN;
1.212 schwarze 2505: key[keysz] = '\0';
1.89 kristaps 2506:
1.187 schwarze 2507: sign = *val;
1.238 schwarze 2508: if (sign == '+' || sign == '-')
1.187 schwarze 2509: val++;
2510:
1.261 schwarze 2511: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2512: roff_setreg(r, key, iv, sign);
1.109 kristaps 2513:
1.277 schwarze 2514: return ROFF_IGN;
1.203 schwarze 2515: }
2516:
2517: static enum rofferr
2518: roff_rr(ROFF_ARGS)
2519: {
2520: struct roffreg *reg, **prev;
1.212 schwarze 2521: char *name, *cp;
2522: size_t namesz;
1.203 schwarze 2523:
1.238 schwarze 2524: name = cp = buf->buf + pos;
2525: if (*name == '\0')
1.277 schwarze 2526: return ROFF_IGN;
1.212 schwarze 2527: namesz = roff_getname(r, &cp, ln, pos);
2528: name[namesz] = '\0';
1.203 schwarze 2529:
2530: prev = &r->regtab;
2531: while (1) {
2532: reg = *prev;
1.238 schwarze 2533: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2534: break;
2535: prev = ®->next;
2536: }
1.238 schwarze 2537: if (reg != NULL) {
1.203 schwarze 2538: *prev = reg->next;
2539: free(reg->key.p);
2540: free(reg);
2541: }
1.277 schwarze 2542: return ROFF_IGN;
1.122 schwarze 2543: }
2544:
1.266 schwarze 2545: /* --- handler functions for roff requests -------------------------------- */
2546:
1.122 schwarze 2547: static enum rofferr
2548: roff_rm(ROFF_ARGS)
2549: {
2550: const char *name;
2551: char *cp;
1.212 schwarze 2552: size_t namesz;
1.122 schwarze 2553:
1.238 schwarze 2554: cp = buf->buf + pos;
2555: while (*cp != '\0') {
1.212 schwarze 2556: name = cp;
1.238 schwarze 2557: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2558: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.238 schwarze 2559: if (name[namesz] == '\\')
1.212 schwarze 2560: break;
1.122 schwarze 2561: }
1.277 schwarze 2562: return ROFF_IGN;
1.178 schwarze 2563: }
2564:
2565: static enum rofferr
2566: roff_it(ROFF_ARGS)
2567: {
2568: int iv;
2569:
2570: /* Parse the number of lines. */
1.261 schwarze 2571:
2572: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2573: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2574: ln, ppos, buf->buf + 1);
1.277 schwarze 2575: return ROFF_IGN;
1.178 schwarze 2576: }
2577:
1.262 schwarze 2578: while (isspace((unsigned char)buf->buf[pos]))
2579: pos++;
2580:
2581: /*
2582: * Arm the input line trap.
2583: * Special-casing "an-trap" is an ugly workaround to cope
2584: * with DocBook stupidly fiddling with man(7) internals.
2585: */
1.261 schwarze 2586:
1.178 schwarze 2587: roffit_lines = iv;
1.262 schwarze 2588: roffit_macro = mandoc_strdup(iv != 1 ||
2589: strcmp(buf->buf + pos, "an-trap") ?
2590: buf->buf + pos : "br");
1.277 schwarze 2591: return ROFF_IGN;
1.175 schwarze 2592: }
2593:
2594: static enum rofferr
2595: roff_Dd(ROFF_ARGS)
2596: {
2597: const char *const *cp;
2598:
1.227 schwarze 2599: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.175 schwarze 2600: for (cp = __mdoc_reserved; *cp; cp++)
2601: roff_setstr(r, *cp, NULL, 0);
2602:
1.227 schwarze 2603: if (r->format == 0)
2604: r->format = MPARSE_MDOC;
2605:
1.277 schwarze 2606: return ROFF_CONT;
1.175 schwarze 2607: }
2608:
2609: static enum rofferr
2610: roff_TH(ROFF_ARGS)
2611: {
2612: const char *const *cp;
2613:
1.227 schwarze 2614: if ((r->options & MPARSE_QUICK) == 0)
1.175 schwarze 2615: for (cp = __man_reserved; *cp; cp++)
2616: roff_setstr(r, *cp, NULL, 0);
2617:
1.227 schwarze 2618: if (r->format == 0)
2619: r->format = MPARSE_MAN;
2620:
1.277 schwarze 2621: return ROFF_CONT;
1.109 kristaps 2622: }
2623:
2624: static enum rofferr
2625: roff_TE(ROFF_ARGS)
2626: {
2627:
2628: if (NULL == r->tbl)
1.221 schwarze 2629: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2630: ln, ppos, "TE");
1.258 schwarze 2631: else if ( ! tbl_end(&r->tbl)) {
2632: free(buf->buf);
2633: buf->buf = mandoc_strdup(".sp");
2634: buf->sz = 4;
1.277 schwarze 2635: return ROFF_REPARSE;
1.258 schwarze 2636: }
1.277 schwarze 2637: return ROFF_IGN;
1.112 kristaps 2638: }
2639:
2640: static enum rofferr
2641: roff_T_(ROFF_ARGS)
2642: {
2643:
2644: if (NULL == r->tbl)
1.221 schwarze 2645: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2646: ln, ppos, "T&");
1.112 kristaps 2647: else
1.296 schwarze 2648: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 2649:
1.277 schwarze 2650: return ROFF_IGN;
1.109 kristaps 2651: }
2652:
1.230 schwarze 2653: /*
2654: * Handle in-line equation delimiters.
2655: */
2656: static enum rofferr
1.238 schwarze 2657: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2658: {
1.233 schwarze 2659: char *cp1, *cp2;
2660: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2661:
1.230 schwarze 2662: /*
2663: * Outside equations, look for an opening delimiter.
2664: * If we are inside an equation, we already know it is
2665: * in-line, or this function wouldn't have been called;
2666: * so look for a closing delimiter.
2667: */
2668:
1.238 schwarze 2669: cp1 = buf->buf + pos;
1.230 schwarze 2670: cp2 = strchr(cp1, r->eqn == NULL ?
2671: r->last_eqn->odelim : r->last_eqn->cdelim);
2672: if (cp2 == NULL)
1.277 schwarze 2673: return ROFF_CONT;
1.230 schwarze 2674:
1.233 schwarze 2675: *cp2++ = '\0';
2676: bef_pr = bef_nl = aft_nl = aft_pr = "";
2677:
2678: /* Handle preceding text, protecting whitespace. */
2679:
1.238 schwarze 2680: if (*buf->buf != '\0') {
1.233 schwarze 2681: if (r->eqn == NULL)
2682: bef_pr = "\\&";
2683: bef_nl = "\n";
2684: }
2685:
2686: /*
2687: * Prepare replacing the delimiter with an equation macro
2688: * and drop leading white space from the equation.
2689: */
1.230 schwarze 2690:
1.233 schwarze 2691: if (r->eqn == NULL) {
2692: while (*cp2 == ' ')
2693: cp2++;
2694: mac = ".EQ";
2695: } else
2696: mac = ".EN";
2697:
2698: /* Handle following text, protecting whitespace. */
2699:
2700: if (*cp2 != '\0') {
2701: aft_nl = "\n";
2702: if (r->eqn != NULL)
2703: aft_pr = "\\&";
2704: }
2705:
2706: /* Do the actual replacement. */
2707:
1.238 schwarze 2708: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2709: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2710: free(buf->buf);
2711: buf->buf = cp1;
1.230 schwarze 2712:
2713: /* Toggle the in-line state of the eqn subsystem. */
2714:
2715: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2716: return ROFF_REPARSE;
1.151 kristaps 2717: }
2718:
1.235 schwarze 2719: static enum rofferr
2720: roff_EQ(ROFF_ARGS)
1.125 kristaps 2721: {
1.151 kristaps 2722: struct eqn_node *e;
1.125 kristaps 2723:
1.238 schwarze 2724: assert(r->eqn == NULL);
1.235 schwarze 2725: e = eqn_alloc(ppos, ln, r->parse);
1.125 kristaps 2726:
1.230 schwarze 2727: if (r->last_eqn) {
1.125 kristaps 2728: r->last_eqn->next = e;
1.230 schwarze 2729: e->delim = r->last_eqn->delim;
2730: e->odelim = r->last_eqn->odelim;
2731: e->cdelim = r->last_eqn->cdelim;
2732: } else
1.125 kristaps 2733: r->first_eqn = r->last_eqn = e;
2734:
2735: r->eqn = r->last_eqn = e;
1.151 kristaps 2736:
1.238 schwarze 2737: if (buf->buf[pos] != '\0')
1.235 schwarze 2738: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2739: ".EQ %s", buf->buf + pos);
1.151 kristaps 2740:
1.277 schwarze 2741: return ROFF_IGN;
1.125 kristaps 2742: }
2743:
2744: static enum rofferr
2745: roff_EN(ROFF_ARGS)
2746: {
2747:
1.221 schwarze 2748: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.277 schwarze 2749: return ROFF_IGN;
1.125 kristaps 2750: }
2751:
2752: static enum rofferr
1.109 kristaps 2753: roff_TS(ROFF_ARGS)
2754: {
1.176 schwarze 2755: struct tbl_node *tbl;
1.89 kristaps 2756:
1.115 kristaps 2757: if (r->tbl) {
1.221 schwarze 2758: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2759: ln, ppos, "TS breaks TS");
1.151 kristaps 2760: tbl_end(&r->tbl);
1.115 kristaps 2761: }
1.83 schwarze 2762:
1.176 schwarze 2763: tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2764:
2765: if (r->last_tbl)
1.176 schwarze 2766: r->last_tbl->next = tbl;
1.113 kristaps 2767: else
1.176 schwarze 2768: r->first_tbl = r->last_tbl = tbl;
1.113 kristaps 2769:
1.176 schwarze 2770: r->tbl = r->last_tbl = tbl;
1.297 schwarze 2771: return ROFF_IGN;
2772: }
2773:
2774: static enum rofferr
2775: roff_onearg(ROFF_ARGS)
2776: {
2777: struct roff_node *n;
2778: char *cp;
2779:
2780: roff_elem_alloc(r->man, ln, ppos, tok);
2781: n = r->man->last;
2782:
2783: cp = buf->buf + pos;
2784: if (*cp != '\0') {
2785: while (*cp != '\0' && *cp != ' ')
2786: cp++;
2787: while (*cp == ' ')
2788: *cp++ = '\0';
2789: if (*cp != '\0')
2790: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2791: r->parse, ln, cp - buf->buf,
2792: "%s ... %s", roff_name[tok], cp);
2793: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
2794: }
2795:
2796: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2797: r->man->last = n;
2798: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 2799: return ROFF_IGN;
1.251 schwarze 2800: }
2801:
2802: static enum rofferr
1.296 schwarze 2803: roff_br(ROFF_ARGS)
1.251 schwarze 2804: {
1.296 schwarze 2805: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
2806: if (buf->buf[pos] != '\0')
2807: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2808: "%s %s", roff_name[tok], buf->buf + pos);
2809: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2810: r->man->next = ROFF_NEXT_SIBLING;
2811: return ROFF_IGN;
1.92 schwarze 2812: }
2813:
1.105 kristaps 2814: static enum rofferr
1.174 kristaps 2815: roff_cc(ROFF_ARGS)
2816: {
2817: const char *p;
2818:
1.238 schwarze 2819: p = buf->buf + pos;
1.174 kristaps 2820:
1.238 schwarze 2821: if (*p == '\0' || (r->control = *p++) == '.')
1.174 kristaps 2822: r->control = 0;
2823:
1.238 schwarze 2824: if (*p != '\0')
1.260 schwarze 2825: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2826: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 2827:
1.277 schwarze 2828: return ROFF_IGN;
1.174 kristaps 2829: }
2830:
2831: static enum rofferr
1.164 kristaps 2832: roff_tr(ROFF_ARGS)
2833: {
2834: const char *p, *first, *second;
2835: size_t fsz, ssz;
2836: enum mandoc_esc esc;
2837:
1.238 schwarze 2838: p = buf->buf + pos;
1.164 kristaps 2839:
1.238 schwarze 2840: if (*p == '\0') {
1.260 schwarze 2841: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 2842: return ROFF_IGN;
1.164 kristaps 2843: }
2844:
1.238 schwarze 2845: while (*p != '\0') {
1.164 kristaps 2846: fsz = ssz = 1;
2847:
2848: first = p++;
1.238 schwarze 2849: if (*first == '\\') {
1.164 kristaps 2850: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2851: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2852: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2853: ln, (int)(p - buf->buf), first);
1.277 schwarze 2854: return ROFF_IGN;
1.164 kristaps 2855: }
2856: fsz = (size_t)(p - first);
2857: }
2858:
2859: second = p++;
1.238 schwarze 2860: if (*second == '\\') {
1.164 kristaps 2861: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2862: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2863: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2864: ln, (int)(p - buf->buf), second);
1.277 schwarze 2865: return ROFF_IGN;
1.164 kristaps 2866: }
2867: ssz = (size_t)(p - second);
1.238 schwarze 2868: } else if (*second == '\0') {
1.260 schwarze 2869: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2870: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 2871: second = " ";
1.165 kristaps 2872: p--;
1.164 kristaps 2873: }
2874:
1.167 kristaps 2875: if (fsz > 1) {
1.207 schwarze 2876: roff_setstrn(&r->xmbtab, first, fsz,
2877: second, ssz, 0);
1.167 kristaps 2878: continue;
2879: }
2880:
1.238 schwarze 2881: if (r->xtab == NULL)
1.207 schwarze 2882: r->xtab = mandoc_calloc(128,
2883: sizeof(struct roffstr));
1.167 kristaps 2884:
2885: free(r->xtab[(int)*first].p);
2886: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
2887: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 2888: }
2889:
1.277 schwarze 2890: return ROFF_IGN;
1.164 kristaps 2891: }
2892:
2893: static enum rofferr
1.105 kristaps 2894: roff_so(ROFF_ARGS)
2895: {
1.249 schwarze 2896: char *name, *cp;
1.105 kristaps 2897:
1.238 schwarze 2898: name = buf->buf + pos;
1.224 schwarze 2899: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 2900:
2901: /*
2902: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
2903: * opening anything that's not in our cwd or anything beneath
2904: * it. Thus, explicitly disallow traversing up the file-system
2905: * or using absolute paths.
2906: */
2907:
1.238 schwarze 2908: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 2909: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
2910: ".so %s", name);
1.249 schwarze 2911: buf->sz = mandoc_asprintf(&cp,
2912: ".sp\nSee the file %s.\n.sp", name) + 1;
2913: free(buf->buf);
2914: buf->buf = cp;
2915: *offs = 0;
1.277 schwarze 2916: return ROFF_REPARSE;
1.105 kristaps 2917: }
2918:
2919: *offs = pos;
1.277 schwarze 2920: return ROFF_SO;
1.105 kristaps 2921: }
1.92 schwarze 2922:
1.266 schwarze 2923: /* --- user defined strings and macros ------------------------------------ */
2924:
1.106 kristaps 2925: static enum rofferr
2926: roff_userdef(ROFF_ARGS)
1.99 kristaps 2927: {
1.263 schwarze 2928: const char *arg[9], *ap;
1.106 kristaps 2929: char *cp, *n1, *n2;
1.292 schwarze 2930: int expand_count, i, ib, ie;
1.263 schwarze 2931: size_t asz, rsz;
1.106 kristaps 2932:
2933: /*
2934: * Collect pointers to macro argument strings
1.188 schwarze 2935: * and NUL-terminate them.
1.106 kristaps 2936: */
1.263 schwarze 2937:
1.273 schwarze 2938: r->argc = 0;
1.238 schwarze 2939: cp = buf->buf + pos;
1.273 schwarze 2940: for (i = 0; i < 9; i++) {
2941: if (*cp == '\0')
2942: arg[i] = "";
2943: else {
2944: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
2945: r->argc = i + 1;
2946: }
2947: }
1.99 kristaps 2948:
1.106 kristaps 2949: /*
2950: * Expand macro arguments.
1.99 kristaps 2951: */
1.263 schwarze 2952:
2953: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 2954: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 2955: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 2956: expand_count = 0;
1.263 schwarze 2957: while (*cp != '\0') {
2958:
2959: /* Scan ahead for the next argument invocation. */
2960:
2961: if (*cp++ != '\\')
2962: continue;
2963: if (*cp++ != '$')
2964: continue;
1.274 schwarze 2965: if (*cp == '*') { /* \\$* inserts all arguments */
2966: ib = 0;
2967: ie = r->argc - 1;
2968: } else { /* \\$1 .. \\$9 insert one argument */
2969: ib = ie = *cp - '1';
2970: if (ib < 0 || ib > 8)
2971: continue;
2972: }
1.263 schwarze 2973: cp -= 2;
1.292 schwarze 2974:
2975: /*
2976: * Prevent infinite recursion.
2977: */
2978:
2979: if (cp >= n2)
2980: expand_count = 1;
2981: else if (++expand_count > EXPAND_LIMIT) {
2982: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
2983: ln, (int)(cp - n1), NULL);
1.293 schwarze 2984: free(buf->buf);
2985: buf->buf = n1;
1.292 schwarze 2986: return ROFF_IGN;
2987: }
1.263 schwarze 2988:
2989: /*
2990: * Determine the size of the expanded argument,
2991: * taking escaping of quotes into account.
2992: */
2993:
1.274 schwarze 2994: asz = ie > ib ? ie - ib : 0; /* for blanks */
2995: for (i = ib; i <= ie; i++) {
2996: for (ap = arg[i]; *ap != '\0'; ap++) {
2997: asz++;
2998: if (*ap == '"')
2999: asz += 3;
3000: }
1.263 schwarze 3001: }
3002: if (asz != 3) {
3003:
3004: /*
3005: * Determine the size of the rest of the
3006: * unexpanded macro, including the NUL.
3007: */
3008:
3009: rsz = buf->sz - (cp - n1) - 3;
3010:
3011: /*
3012: * When shrinking, move before
3013: * releasing the storage.
3014: */
3015:
3016: if (asz < 3)
3017: memmove(cp + asz, cp + 3, rsz);
3018:
3019: /*
3020: * Resize the storage for the macro
3021: * and readjust the parse pointer.
3022: */
3023:
3024: buf->sz += asz - 3;
3025: n2 = mandoc_realloc(n1, buf->sz);
3026: cp = n2 + (cp - n1);
3027: n1 = n2;
3028:
3029: /*
3030: * When growing, make room
3031: * for the expanded argument.
3032: */
3033:
3034: if (asz > 3)
3035: memmove(cp + asz, cp + 3, rsz);
3036: }
3037:
3038: /* Copy the expanded argument, escaping quotes. */
3039:
3040: n2 = cp;
1.274 schwarze 3041: for (i = ib; i <= ie; i++) {
3042: for (ap = arg[i]; *ap != '\0'; ap++) {
3043: if (*ap == '"') {
3044: memcpy(n2, "\\(dq", 4);
3045: n2 += 4;
3046: } else
3047: *n2++ = *ap;
3048: }
3049: if (i < ie)
3050: *n2++ = ' ';
1.106 kristaps 3051: }
1.99 kristaps 3052: }
3053:
1.106 kristaps 3054: /*
3055: * Replace the macro invocation
3056: * by the expanded macro.
3057: */
1.263 schwarze 3058:
1.238 schwarze 3059: free(buf->buf);
3060: buf->buf = n1;
1.248 schwarze 3061: *offs = 0;
1.106 kristaps 3062:
1.277 schwarze 3063: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3064: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3065: }
1.121 schwarze 3066:
1.212 schwarze 3067: static size_t
1.121 schwarze 3068: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3069: {
3070: char *name, *cp;
1.212 schwarze 3071: size_t namesz;
1.121 schwarze 3072:
3073: name = *cpp;
3074: if ('\0' == *name)
1.277 schwarze 3075: return 0;
1.121 schwarze 3076:
1.212 schwarze 3077: /* Read until end of name and terminate it with NUL. */
3078: for (cp = name; 1; cp++) {
3079: if ('\0' == *cp || ' ' == *cp) {
3080: namesz = cp - name;
3081: break;
3082: }
1.121 schwarze 3083: if ('\\' != *cp)
3084: continue;
1.215 schwarze 3085: namesz = cp - name;
3086: if ('{' == cp[1] || '}' == cp[1])
3087: break;
1.121 schwarze 3088: cp++;
3089: if ('\\' == *cp)
3090: continue;
1.224 schwarze 3091: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3092: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3093: mandoc_escape((const char **)&cp, NULL, NULL);
3094: break;
1.121 schwarze 3095: }
3096:
3097: /* Read past spaces. */
3098: while (' ' == *cp)
3099: cp++;
3100:
3101: *cpp = cp;
1.277 schwarze 3102: return namesz;
1.121 schwarze 3103: }
3104:
1.106 kristaps 3105: /*
3106: * Store *string into the user-defined string called *name.
3107: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3108: * append == 0: replace mode
3109: * append == 1: single-line append mode
3110: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3111: */
1.94 kristaps 3112: static void
1.106 kristaps 3113: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3114: int append)
1.92 schwarze 3115: {
1.164 kristaps 3116:
3117: roff_setstrn(&r->strtab, name, strlen(name), string,
1.207 schwarze 3118: string ? strlen(string) : 0, append);
1.164 kristaps 3119: }
3120:
3121: static void
1.166 kristaps 3122: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3123: const char *string, size_t stringsz, int append)
1.164 kristaps 3124: {
1.166 kristaps 3125: struct roffkv *n;
1.164 kristaps 3126: char *c;
3127: int i;
3128: size_t oldch, newch;
1.92 schwarze 3129:
1.106 kristaps 3130: /* Search for an existing string with the same name. */
1.164 kristaps 3131: n = *r;
3132:
1.211 schwarze 3133: while (n && (namesz != n->key.sz ||
3134: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3135: n = n->next;
1.94 kristaps 3136:
3137: if (NULL == n) {
1.106 kristaps 3138: /* Create a new string table entry. */
1.166 kristaps 3139: n = mandoc_malloc(sizeof(struct roffkv));
3140: n->key.p = mandoc_strndup(name, namesz);
3141: n->key.sz = namesz;
3142: n->val.p = NULL;
3143: n->val.sz = 0;
1.164 kristaps 3144: n->next = *r;
3145: *r = n;
1.193 schwarze 3146: } else if (0 == append) {
1.166 kristaps 3147: free(n->val.p);
3148: n->val.p = NULL;
3149: n->val.sz = 0;
1.106 kristaps 3150: }
3151:
3152: if (NULL == string)
3153: return;
3154:
3155: /*
3156: * One additional byte for the '\n' in multiline mode,
3157: * and one for the terminating '\0'.
3158: */
1.193 schwarze 3159: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3160:
1.166 kristaps 3161: if (NULL == n->val.p) {
3162: n->val.p = mandoc_malloc(newch);
3163: *n->val.p = '\0';
1.106 kristaps 3164: oldch = 0;
3165: } else {
1.166 kristaps 3166: oldch = n->val.sz;
3167: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3168: }
3169:
3170: /* Skip existing content in the destination buffer. */
1.166 kristaps 3171: c = n->val.p + (int)oldch;
1.106 kristaps 3172:
3173: /* Append new content to the destination buffer. */
1.164 kristaps 3174: i = 0;
3175: while (i < (int)stringsz) {
1.106 kristaps 3176: /*
3177: * Rudimentary roff copy mode:
3178: * Handle escaped backslashes.
3179: */
1.164 kristaps 3180: if ('\\' == string[i] && '\\' == string[i + 1])
3181: i++;
3182: *c++ = string[i++];
1.106 kristaps 3183: }
1.94 kristaps 3184:
1.106 kristaps 3185: /* Append terminating bytes. */
1.193 schwarze 3186: if (1 < append)
1.106 kristaps 3187: *c++ = '\n';
1.163 kristaps 3188:
1.106 kristaps 3189: *c = '\0';
1.166 kristaps 3190: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3191: }
3192:
1.94 kristaps 3193: static const char *
3194: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.92 schwarze 3195: {
1.166 kristaps 3196: const struct roffkv *n;
1.191 schwarze 3197: int i;
1.92 schwarze 3198:
1.164 kristaps 3199: for (n = r->strtab; n; n = n->next)
1.207 schwarze 3200: if (0 == strncmp(name, n->key.p, len) &&
3201: '\0' == n->key.p[(int)len])
1.277 schwarze 3202: return n->val.p;
1.191 schwarze 3203:
3204: for (i = 0; i < PREDEFS_MAX; i++)
3205: if (0 == strncmp(name, predefs[i].name, len) &&
3206: '\0' == predefs[i].name[(int)len])
1.277 schwarze 3207: return predefs[i].str;
1.94 kristaps 3208:
1.277 schwarze 3209: return NULL;
1.92 schwarze 3210: }
3211:
1.94 kristaps 3212: static void
1.167 kristaps 3213: roff_freestr(struct roffkv *r)
1.92 schwarze 3214: {
1.166 kristaps 3215: struct roffkv *n, *nn;
1.92 schwarze 3216:
1.167 kristaps 3217: for (n = r; n; n = nn) {
1.166 kristaps 3218: free(n->key.p);
3219: free(n->val.p);
1.92 schwarze 3220: nn = n->next;
3221: free(n);
3222: }
1.114 kristaps 3223: }
1.266 schwarze 3224:
3225: /* --- accessors and utility functions ------------------------------------ */
1.114 kristaps 3226:
3227: const struct tbl_span *
3228: roff_span(const struct roff *r)
3229: {
1.207 schwarze 3230:
1.277 schwarze 3231: return r->tbl ? tbl_span(r->tbl) : NULL;
1.125 kristaps 3232: }
3233:
3234: const struct eqn *
3235: roff_eqn(const struct roff *r)
3236: {
1.207 schwarze 3237:
1.277 schwarze 3238: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.164 kristaps 3239: }
3240:
3241: /*
3242: * Duplicate an input string, making the appropriate character
3243: * conversations (as stipulated by `tr') along the way.
3244: * Returns a heap-allocated string with all the replacements made.
3245: */
3246: char *
3247: roff_strdup(const struct roff *r, const char *p)
3248: {
1.166 kristaps 3249: const struct roffkv *cp;
1.164 kristaps 3250: char *res;
3251: const char *pp;
3252: size_t ssz, sz;
3253: enum mandoc_esc esc;
3254:
1.167 kristaps 3255: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3256: return mandoc_strdup(p);
1.164 kristaps 3257: else if ('\0' == *p)
1.277 schwarze 3258: return mandoc_strdup("");
1.164 kristaps 3259:
3260: /*
3261: * Step through each character looking for term matches
3262: * (remember that a `tr' can be invoked with an escape, which is
3263: * a glyph but the escape is multi-character).
3264: * We only do this if the character hash has been initialised
3265: * and the string is >0 length.
3266: */
3267:
3268: res = NULL;
3269: ssz = 0;
3270:
3271: while ('\0' != *p) {
1.289 schwarze 3272: assert((unsigned int)*p < 128);
3273: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3274: sz = r->xtab[(int)*p].sz;
3275: res = mandoc_realloc(res, ssz + sz + 1);
3276: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3277: ssz += sz;
3278: p++;
3279: continue;
3280: } else if ('\\' != *p) {
3281: res = mandoc_realloc(res, ssz + 2);
3282: res[ssz++] = *p++;
3283: continue;
3284: }
3285:
1.164 kristaps 3286: /* Search for term matches. */
1.167 kristaps 3287: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3288: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3289: break;
3290:
3291: if (NULL != cp) {
3292: /*
3293: * A match has been found.
3294: * Append the match to the array and move
3295: * forward by its keysize.
3296: */
1.207 schwarze 3297: res = mandoc_realloc(res,
3298: ssz + cp->val.sz + 1);
1.166 kristaps 3299: memcpy(res + ssz, cp->val.p, cp->val.sz);
3300: ssz += cp->val.sz;
3301: p += (int)cp->key.sz;
1.164 kristaps 3302: continue;
3303: }
3304:
1.167 kristaps 3305: /*
3306: * Handle escapes carefully: we need to copy
3307: * over just the escape itself, or else we might
3308: * do replacements within the escape itself.
3309: * Make sure to pass along the bogus string.
3310: */
3311: pp = p++;
3312: esc = mandoc_escape(&p, NULL, NULL);
3313: if (ESCAPE_ERROR == esc) {
3314: sz = strlen(pp);
1.164 kristaps 3315: res = mandoc_realloc(res, ssz + sz + 1);
3316: memcpy(res + ssz, pp, sz);
1.167 kristaps 3317: break;
1.164 kristaps 3318: }
1.207 schwarze 3319: /*
3320: * We bail out on bad escapes.
1.167 kristaps 3321: * No need to warn: we already did so when
3322: * roff_res() was called.
3323: */
3324: sz = (int)(p - pp);
3325: res = mandoc_realloc(res, ssz + sz + 1);
3326: memcpy(res + ssz, pp, sz);
3327: ssz += sz;
1.164 kristaps 3328: }
3329:
3330: res[(int)ssz] = '\0';
1.277 schwarze 3331: return res;
1.227 schwarze 3332: }
3333:
3334: int
3335: roff_getformat(const struct roff *r)
3336: {
3337:
1.277 schwarze 3338: return r->format;
1.174 kristaps 3339: }
3340:
3341: /*
1.207 schwarze 3342: * Find out whether a line is a macro line or not.
1.174 kristaps 3343: * If it is, adjust the current position and return one; if it isn't,
3344: * return zero and don't change the current position.
3345: * If the control character has been set with `.cc', then let that grain
3346: * precedence.
3347: * This is slighly contrary to groff, where using the non-breaking
3348: * control character when `cc' has been invoked will cause the
3349: * non-breaking macro contents to be printed verbatim.
3350: */
3351: int
3352: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3353: {
3354: int pos;
3355:
3356: pos = *ppos;
3357:
3358: if (0 != r->control && cp[pos] == r->control)
3359: pos++;
3360: else if (0 != r->control)
1.277 schwarze 3361: return 0;
1.174 kristaps 3362: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3363: pos += 2;
3364: else if ('.' == cp[pos] || '\'' == cp[pos])
3365: pos++;
3366: else
1.277 schwarze 3367: return 0;
1.174 kristaps 3368:
3369: while (' ' == cp[pos] || '\t' == cp[pos])
3370: pos++;
3371:
3372: *ppos = pos;
1.277 schwarze 3373: return 1;
1.74 kristaps 3374: }
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