Annotation of mandoc/roff.c, Revision 1.297
1.297 ! schwarze 1: /* $Id: roff.c,v 1.296 2017/05/04 17:48:29 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] = {
1.297 ! schwarze 214: "br", "ft", NULL,
1.294 schwarze 215: "ab", "ad", "af", "aln",
216: "als", "am", "am1", "ami",
217: "ami1", "as", "as1", "asciify",
218: "backtrace", "bd", "bleedat", "blm",
219: "box", "boxa", "bp", "BP",
220: "break", "breakchar", "brnl", "brp",
221: "brpnl", "c2", "cc", "ce",
222: "cf", "cflags", "ch", "char",
223: "chop", "class", "close", "CL",
224: "color", "composite", "continue", "cp",
225: "cropat", "cs", "cu", "da",
226: "dch", "Dd", "de", "de1",
227: "defcolor", "dei", "dei1", "device",
228: "devicem", "di", "do", "ds",
229: "ds1", "dwh", "dt", "ec",
230: "ecr", "ecs", "el", "em",
231: "EN", "eo", "EP", "EQ",
232: "errprint", "ev", "evc", "ex",
233: "fallback", "fam", "fc", "fchar",
234: "fcolor", "fdeferlig", "feature", "fkern",
235: "fl", "flig", "fp", "fps",
236: "fschar", "fspacewidth", "fspecial", "ftr",
237: "fzoom", "gcolor", "hc", "hcode",
238: "hidechar", "hla", "hlm", "hpf",
239: "hpfa", "hpfcode", "hw", "hy",
240: "hylang", "hylen", "hym", "hypp",
241: "hys", "ie", "if", "ig",
242: "index", "it", "itc", "IX",
243: "kern", "kernafter", "kernbefore", "kernpair",
244: "lc", "lc_ctype", "lds", "length",
245: "letadj", "lf", "lg", "lhang",
246: "linetabs", "lnr", "lnrf", "lpfx",
247: "ls", "lsm", "lt", "mc",
248: "mediasize", "minss", "mk", "mso",
249: "na", "ne", "nh", "nhychar",
250: "nm", "nn", "nop", "nr",
251: "nrf", "nroff", "ns", "nx",
252: "open", "opena", "os", "output",
253: "padj", "papersize", "pc", "pev",
254: "pi", "PI", "pl", "pm",
255: "pn", "pnr", "po", "ps",
256: "psbb", "pshape", "pso", "ptr",
257: "pvs", "rchar", "rd", "recursionlimit",
258: "return", "rfschar", "rhang", "rj",
259: "rm", "rn", "rnn", "rr",
260: "rs", "rt", "schar", "sentchar",
261: "shc", "shift", "sizes", "so",
262: "spacewidth", "special", "spreadwarn", "ss",
263: "sty", "substring", "sv", "sy",
264: "T&", "ta", "tc", "TE",
265: "TH", "ti", "tkf", "tl",
266: "tm", "tm1", "tmc", "tr",
267: "track", "transchar", "trf", "trimat",
268: "trin", "trnt", "troff", "TS",
269: "uf", "ul", "unformat", "unwatch",
270: "unwatchn", "vpt", "vs", "warn",
271: "warnscale", "watch", "watchlength", "watchn",
272: "wh", "while", "write", "writec",
273: "writem", "xflag", ".", NULL,
274: "text",
275: "Dd", "Dt", "Os", "Sh",
276: "Ss", "Pp", "D1", "Dl",
277: "Bd", "Ed", "Bl", "El",
278: "It", "Ad", "An", "Ap",
279: "Ar", "Cd", "Cm", "Dv",
280: "Er", "Ev", "Ex", "Fa",
281: "Fd", "Fl", "Fn", "Ft",
282: "Ic", "In", "Li", "Nd",
283: "Nm", "Op", "Ot", "Pa",
284: "Rv", "St", "Va", "Vt",
285: "Xr", "%A", "%B", "%D",
286: "%I", "%J", "%N", "%O",
287: "%P", "%R", "%T", "%V",
288: "Ac", "Ao", "Aq", "At",
289: "Bc", "Bf", "Bo", "Bq",
290: "Bsx", "Bx", "Db", "Dc",
291: "Do", "Dq", "Ec", "Ef",
292: "Em", "Eo", "Fx", "Ms",
293: "No", "Ns", "Nx", "Ox",
294: "Pc", "Pf", "Po", "Pq",
295: "Qc", "Ql", "Qo", "Qq",
296: "Re", "Rs", "Sc", "So",
297: "Sq", "Sm", "Sx", "Sy",
298: "Tn", "Ux", "Xc", "Xo",
299: "Fo", "Fc", "Oo", "Oc",
300: "Bk", "Ek", "Bt", "Hf",
301: "Fr", "Ud", "Lb", "Lp",
302: "Lk", "Mt", "Brq", "Bro",
303: "Brc", "%C", "Es", "En",
1.296 schwarze 304: "Dx", "%Q", "sp",
1.294 schwarze 305: "%U", "Ta", "ll", NULL,
306: "TH", "SH", "SS", "TP",
307: "LP", "PP", "P", "IP",
308: "HP", "SM", "SB", "BI",
309: "IB", "BR", "RB", "R",
310: "B", "I", "IR", "RI",
1.296 schwarze 311: "sp", "nf", "fi",
1.294 schwarze 312: "RE", "RS", "DT", "UC",
1.297 ! schwarze 313: "PD", "AT", "in",
1.294 schwarze 314: "OP", "EX", "EE", "UR",
315: "UE", "ll", NULL
316: };
317: const char *const *roff_name = __roff_name;
318:
319: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 320: { roff_br, NULL, NULL, 0 }, /* br */
1.297 ! schwarze 321: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.296 schwarze 322: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 323: { roff_unsupp, NULL, NULL, 0 }, /* ab */
324: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
325: { roff_line_ignore, NULL, NULL, 0 }, /* af */
326: { roff_unsupp, NULL, NULL, 0 }, /* aln */
327: { roff_unsupp, NULL, NULL, 0 }, /* als */
328: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
329: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
330: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
331: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
332: { roff_ds, NULL, NULL, 0 }, /* as */
333: { roff_ds, NULL, NULL, 0 }, /* as1 */
334: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
335: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
336: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
337: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
338: { roff_unsupp, NULL, NULL, 0 }, /* blm */
339: { roff_unsupp, NULL, NULL, 0 }, /* box */
340: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
341: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
342: { roff_unsupp, NULL, NULL, 0 }, /* BP */
343: { roff_unsupp, NULL, NULL, 0 }, /* break */
344: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
345: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 346: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 347: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
348: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
349: { roff_cc, NULL, NULL, 0 }, /* cc */
350: { roff_line_ignore, NULL, NULL, 0 }, /* ce */
351: { roff_insec, NULL, NULL, 0 }, /* cf */
352: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
353: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
354: { roff_unsupp, NULL, NULL, 0 }, /* char */
355: { roff_unsupp, NULL, NULL, 0 }, /* chop */
356: { roff_line_ignore, NULL, NULL, 0 }, /* class */
357: { roff_insec, NULL, NULL, 0 }, /* close */
358: { roff_unsupp, NULL, NULL, 0 }, /* CL */
359: { roff_line_ignore, NULL, NULL, 0 }, /* color */
360: { roff_unsupp, NULL, NULL, 0 }, /* composite */
361: { roff_unsupp, NULL, NULL, 0 }, /* continue */
362: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
363: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
364: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
365: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
366: { roff_unsupp, NULL, NULL, 0 }, /* da */
367: { roff_unsupp, NULL, NULL, 0 }, /* dch */
368: { roff_Dd, NULL, NULL, 0 }, /* Dd */
369: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
370: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
371: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
372: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
373: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
374: { roff_unsupp, NULL, NULL, 0 }, /* device */
375: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
376: { roff_unsupp, NULL, NULL, 0 }, /* di */
377: { roff_unsupp, NULL, NULL, 0 }, /* do */
378: { roff_ds, NULL, NULL, 0 }, /* ds */
379: { roff_ds, NULL, NULL, 0 }, /* ds1 */
380: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
381: { roff_unsupp, NULL, NULL, 0 }, /* dt */
382: { roff_unsupp, NULL, NULL, 0 }, /* ec */
383: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
384: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
385: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
386: { roff_unsupp, NULL, NULL, 0 }, /* em */
387: { roff_EN, NULL, NULL, 0 }, /* EN */
388: { roff_unsupp, NULL, NULL, 0 }, /* eo */
389: { roff_unsupp, NULL, NULL, 0 }, /* EP */
390: { roff_EQ, NULL, NULL, 0 }, /* EQ */
391: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
392: { roff_unsupp, NULL, NULL, 0 }, /* ev */
393: { roff_unsupp, NULL, NULL, 0 }, /* evc */
394: { roff_unsupp, NULL, NULL, 0 }, /* ex */
395: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
396: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
397: { roff_unsupp, NULL, NULL, 0 }, /* fc */
398: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
399: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
400: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
401: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
402: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
403: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
404: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
405: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
406: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
407: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
408: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
409: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
410: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
411: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
412: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
413: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
414: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
415: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
416: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
417: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
418: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
419: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
420: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
421: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
422: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
423: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
424: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
425: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
426: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
427: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
428: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
429: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
430: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
431: { roff_unsupp, NULL, NULL, 0 }, /* index */
432: { roff_it, NULL, NULL, 0 }, /* it */
433: { roff_unsupp, NULL, NULL, 0 }, /* itc */
434: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
435: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
436: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
437: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
438: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
439: { roff_unsupp, NULL, NULL, 0 }, /* lc */
440: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
441: { roff_unsupp, NULL, NULL, 0 }, /* lds */
442: { roff_unsupp, NULL, NULL, 0 }, /* length */
443: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
444: { roff_insec, NULL, NULL, 0 }, /* lf */
445: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
446: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
447: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
448: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
449: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
450: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
451: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
452: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
453: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
454: { roff_line_ignore, NULL, NULL, 0 }, /* mc */
455: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
456: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
457: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
458: { roff_insec, NULL, NULL, 0 }, /* mso */
459: { roff_line_ignore, NULL, NULL, 0 }, /* na */
460: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
461: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
462: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
463: { roff_unsupp, NULL, NULL, 0 }, /* nm */
464: { roff_unsupp, NULL, NULL, 0 }, /* nn */
465: { roff_unsupp, NULL, NULL, 0 }, /* nop */
466: { roff_nr, NULL, NULL, 0 }, /* nr */
467: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
468: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
469: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
470: { roff_insec, NULL, NULL, 0 }, /* nx */
471: { roff_insec, NULL, NULL, 0 }, /* open */
472: { roff_insec, NULL, NULL, 0 }, /* opena */
473: { roff_line_ignore, NULL, NULL, 0 }, /* os */
474: { roff_unsupp, NULL, NULL, 0 }, /* output */
475: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
476: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
477: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
478: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
479: { roff_insec, NULL, NULL, 0 }, /* pi */
480: { roff_unsupp, NULL, NULL, 0 }, /* PI */
481: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
482: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
483: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
484: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
485: { roff_line_ignore, NULL, NULL, 0 }, /* po */
486: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
487: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
488: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
489: { roff_insec, NULL, NULL, 0 }, /* pso */
490: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
491: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
492: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
493: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
494: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
495: { roff_unsupp, NULL, NULL, 0 }, /* return */
496: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
497: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
498: { roff_line_ignore, NULL, NULL, 0 }, /* rj */
499: { roff_rm, NULL, NULL, 0 }, /* rm */
500: { roff_unsupp, NULL, NULL, 0 }, /* rn */
501: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
502: { roff_rr, NULL, NULL, 0 }, /* rr */
503: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
504: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
505: { roff_unsupp, NULL, NULL, 0 }, /* schar */
506: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
507: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
508: { roff_unsupp, NULL, NULL, 0 }, /* shift */
509: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
510: { roff_so, NULL, NULL, 0 }, /* so */
511: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
512: { roff_line_ignore, NULL, NULL, 0 }, /* special */
513: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
514: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
515: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
516: { roff_unsupp, NULL, NULL, 0 }, /* substring */
517: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
518: { roff_insec, NULL, NULL, 0 }, /* sy */
519: { roff_T_, NULL, NULL, 0 }, /* T& */
520: { roff_unsupp, NULL, NULL, 0 }, /* ta */
521: { roff_unsupp, NULL, NULL, 0 }, /* tc */
522: { roff_TE, NULL, NULL, 0 }, /* TE */
523: { roff_TH, NULL, NULL, 0 }, /* TH */
524: { roff_unsupp, NULL, NULL, 0 }, /* ti */
525: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
526: { roff_unsupp, NULL, NULL, 0 }, /* tl */
527: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
528: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
529: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
530: { roff_tr, NULL, NULL, 0 }, /* tr */
531: { roff_line_ignore, NULL, NULL, 0 }, /* track */
532: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
533: { roff_insec, NULL, NULL, 0 }, /* trf */
534: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
535: { roff_unsupp, NULL, NULL, 0 }, /* trin */
536: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
537: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
538: { roff_TS, NULL, NULL, 0 }, /* TS */
539: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
540: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
541: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
542: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
543: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
544: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
545: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
546: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
547: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
548: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
549: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
550: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
551: { roff_unsupp, NULL, NULL, 0 }, /* wh */
552: { roff_unsupp, NULL, NULL, 0 }, /* while */
553: { roff_insec, NULL, NULL, 0 }, /* write */
554: { roff_insec, NULL, NULL, 0 }, /* writec */
555: { roff_insec, NULL, NULL, 0 }, /* writem */
556: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
557: { roff_cblock, NULL, NULL, 0 }, /* . */
558: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 559: };
560:
1.200 schwarze 561: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.175 schwarze 562: const char *const __mdoc_reserved[] = {
563: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
564: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
565: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
566: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.200 schwarze 567: "Dt", "Dv", "Dx", "D1",
568: "Ec", "Ed", "Ef", "Ek", "El", "Em",
569: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.175 schwarze 570: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.200 schwarze 571: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
572: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.175 schwarze 573: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.200 schwarze 574: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
575: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
576: "Sc", "Sh", "Sm", "So", "Sq",
1.175 schwarze 577: "Ss", "St", "Sx", "Sy",
578: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.200 schwarze 579: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.175 schwarze 580: "%P", "%Q", "%R", "%T", "%U", "%V",
581: NULL
582: };
583:
1.200 schwarze 584: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.175 schwarze 585: const char *const __man_reserved[] = {
1.200 schwarze 586: "AT", "B", "BI", "BR", "DT",
587: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
588: "LP", "OP", "P", "PD", "PP",
589: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
590: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.175 schwarze 591: NULL
592: };
593:
1.141 kristaps 594: /* Array of injected predefined strings. */
595: #define PREDEFS_MAX 38
596: static const struct predef predefs[PREDEFS_MAX] = {
597: #include "predefs.in"
598: };
599:
1.178 schwarze 600: static int roffit_lines; /* number of lines to delay */
601: static char *roffit_macro; /* nil-terminated macro line */
602:
1.207 schwarze 603:
1.266 schwarze 604: /* --- request table ------------------------------------------------------ */
605:
1.295 schwarze 606: struct ohash *
607: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 608: {
1.295 schwarze 609: struct ohash *htab;
610: struct roffreq *req;
611: enum roff_tok tok;
612: size_t sz;
613: unsigned int slot;
1.85 kristaps 614:
1.295 schwarze 615: htab = mandoc_malloc(sizeof(*htab));
616: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 617:
1.295 schwarze 618: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 619: if (roff_name[tok] == NULL)
620: continue;
1.295 schwarze 621: sz = strlen(roff_name[tok]);
622: req = mandoc_malloc(sizeof(*req) + sz + 1);
623: req->tok = tok;
624: memcpy(req->name, roff_name[tok], sz + 1);
625: slot = ohash_qlookup(htab, req->name);
626: ohash_insert(htab, slot, req);
1.85 kristaps 627: }
1.295 schwarze 628: return htab;
1.85 kristaps 629: }
630:
1.295 schwarze 631: void
632: roffhash_free(struct ohash *htab)
1.67 kristaps 633: {
1.295 schwarze 634: struct roffreq *req;
635: unsigned int slot;
1.67 kristaps 636:
1.295 schwarze 637: if (htab == NULL)
638: return;
639: for (req = ohash_first(htab, &slot); req != NULL;
640: req = ohash_next(htab, &slot))
641: free(req);
642: ohash_delete(htab);
643: free(htab);
644: }
645:
646: enum roff_tok
647: roffhash_find(struct ohash *htab, const char *name, size_t sz)
648: {
649: struct roffreq *req;
650: const char *end;
651:
652: if (sz) {
653: end = name + sz;
654: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
655: } else
656: req = ohash_find(htab, ohash_qlookup(htab, name));
657: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 658: }
659:
1.266 schwarze 660: /* --- stack of request blocks -------------------------------------------- */
661:
1.67 kristaps 662: /*
663: * Pop the current node off of the stack of roff instructions currently
664: * pending.
665: */
666: static void
667: roffnode_pop(struct roff *r)
668: {
669: struct roffnode *p;
670:
1.75 kristaps 671: assert(r->last);
1.207 schwarze 672: p = r->last;
1.82 kristaps 673:
1.75 kristaps 674: r->last = r->last->parent;
1.106 kristaps 675: free(p->name);
676: free(p->end);
1.67 kristaps 677: free(p);
678: }
679:
680: /*
681: * Push a roff node onto the instruction stack. This must later be
682: * removed with roffnode_pop().
683: */
1.98 schwarze 684: static void
1.294 schwarze 685: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 686: int line, int col)
1.67 kristaps 687: {
688: struct roffnode *p;
689:
1.98 schwarze 690: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 691: p->tok = tok;
1.106 kristaps 692: if (name)
693: p->name = mandoc_strdup(name);
1.67 kristaps 694: p->parent = r->last;
695: p->line = line;
696: p->col = col;
1.198 schwarze 697: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 698:
699: r->last = p;
700: }
701:
1.266 schwarze 702: /* --- roff parser state data management ---------------------------------- */
703:
1.67 kristaps 704: static void
705: roff_free1(struct roff *r)
706: {
1.176 schwarze 707: struct tbl_node *tbl;
1.125 kristaps 708: struct eqn_node *e;
1.167 kristaps 709: int i;
1.67 kristaps 710:
1.176 schwarze 711: while (NULL != (tbl = r->first_tbl)) {
712: r->first_tbl = tbl->next;
713: tbl_free(tbl);
1.109 kristaps 714: }
1.113 kristaps 715: r->first_tbl = r->last_tbl = r->tbl = NULL;
716:
1.125 kristaps 717: while (NULL != (e = r->first_eqn)) {
718: r->first_eqn = e->next;
719: eqn_free(e);
720: }
721: r->first_eqn = r->last_eqn = r->eqn = NULL;
722:
1.67 kristaps 723: while (r->last)
724: roffnode_pop(r);
1.109 kristaps 725:
1.223 schwarze 726: free (r->rstack);
727: r->rstack = NULL;
728: r->rstacksz = 0;
729: r->rstackpos = -1;
730:
731: roff_freereg(r->regtab);
732: r->regtab = NULL;
733:
1.167 kristaps 734: roff_freestr(r->strtab);
735: roff_freestr(r->xmbtab);
736: r->strtab = r->xmbtab = NULL;
737:
738: if (r->xtab)
739: for (i = 0; i < 128; i++)
740: free(r->xtab[i].p);
741: free(r->xtab);
742: r->xtab = NULL;
1.67 kristaps 743: }
744:
745: void
746: roff_reset(struct roff *r)
747: {
748: roff_free1(r);
1.227 schwarze 749: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.174 kristaps 750: r->control = 0;
1.67 kristaps 751: }
752:
753: void
754: roff_free(struct roff *r)
755: {
756: roff_free1(r);
1.295 schwarze 757: roffhash_free(r->reqtab);
1.67 kristaps 758: free(r);
759: }
760:
761: struct roff *
1.279 schwarze 762: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 763: {
764: struct roff *r;
765:
1.98 schwarze 766: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 767: r->parse = parse;
1.295 schwarze 768: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.199 schwarze 769: r->options = options;
1.227 schwarze 770: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 771: r->rstackpos = -1;
1.277 schwarze 772: return r;
1.265 schwarze 773: }
774:
1.266 schwarze 775: /* --- syntax tree state data management ---------------------------------- */
776:
1.265 schwarze 777: static void
778: roff_man_free1(struct roff_man *man)
779: {
780:
1.266 schwarze 781: if (man->first != NULL)
782: roff_node_delete(man, man->first);
1.265 schwarze 783: free(man->meta.msec);
784: free(man->meta.vol);
785: free(man->meta.os);
786: free(man->meta.arch);
787: free(man->meta.title);
788: free(man->meta.name);
789: free(man->meta.date);
790: }
791:
792: static void
793: roff_man_alloc1(struct roff_man *man)
794: {
795:
796: memset(&man->meta, 0, sizeof(man->meta));
797: man->first = mandoc_calloc(1, sizeof(*man->first));
798: man->first->type = ROFFT_ROOT;
799: man->last = man->first;
800: man->last_es = NULL;
801: man->flags = 0;
802: man->macroset = MACROSET_NONE;
803: man->lastsec = man->lastnamed = SEC_NONE;
804: man->next = ROFF_NEXT_CHILD;
805: }
806:
807: void
808: roff_man_reset(struct roff_man *man)
809: {
810:
811: roff_man_free1(man);
812: roff_man_alloc1(man);
813: }
814:
815: void
816: roff_man_free(struct roff_man *man)
817: {
818:
819: roff_man_free1(man);
820: free(man);
821: }
822:
823: struct roff_man *
824: roff_man_alloc(struct roff *roff, struct mparse *parse,
825: const char *defos, int quick)
826: {
827: struct roff_man *man;
828:
829: man = mandoc_calloc(1, sizeof(*man));
830: man->parse = parse;
831: man->roff = roff;
832: man->defos = defos;
833: man->quick = quick;
834: roff_man_alloc1(man);
1.296 schwarze 835: roff->man = man;
1.277 schwarze 836: return man;
1.67 kristaps 837: }
838:
1.266 schwarze 839: /* --- syntax tree handling ----------------------------------------------- */
840:
841: struct roff_node *
842: roff_node_alloc(struct roff_man *man, int line, int pos,
843: enum roff_type type, int tok)
844: {
845: struct roff_node *n;
846:
847: n = mandoc_calloc(1, sizeof(*n));
848: n->line = line;
849: n->pos = pos;
850: n->tok = tok;
851: n->type = type;
852: n->sec = man->lastsec;
853:
854: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 855: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 856: else
1.285 schwarze 857: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 858: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 859: n->flags |= NODE_LINE;
1.266 schwarze 860: man->flags &= ~MDOC_NEWLINE;
861:
1.277 schwarze 862: return n;
1.266 schwarze 863: }
864:
865: void
866: roff_node_append(struct roff_man *man, struct roff_node *n)
867: {
868:
869: switch (man->next) {
870: case ROFF_NEXT_SIBLING:
1.281 schwarze 871: if (man->last->next != NULL) {
872: n->next = man->last->next;
873: man->last->next->prev = n;
874: } else
875: man->last->parent->last = n;
1.266 schwarze 876: man->last->next = n;
877: n->prev = man->last;
878: n->parent = man->last->parent;
879: break;
880: case ROFF_NEXT_CHILD:
1.287 schwarze 881: if (man->last->child != NULL) {
882: n->next = man->last->child;
883: man->last->child->prev = n;
884: } else
885: man->last->last = n;
1.266 schwarze 886: man->last->child = n;
887: n->parent = man->last;
888: break;
889: default:
890: abort();
891: }
1.282 schwarze 892: man->last = n;
1.266 schwarze 893:
894: switch (n->type) {
895: case ROFFT_HEAD:
896: n->parent->head = n;
897: break;
898: case ROFFT_BODY:
1.282 schwarze 899: if (n->end != ENDBODY_NOT)
900: return;
1.266 schwarze 901: n->parent->body = n;
902: break;
903: case ROFFT_TAIL:
904: n->parent->tail = n;
905: break;
906: default:
1.282 schwarze 907: return;
1.266 schwarze 908: }
1.282 schwarze 909:
910: /*
911: * Copy over the normalised-data pointer of our parent. Not
912: * everybody has one, but copying a null pointer is fine.
913: */
914:
915: n->norm = n->parent->norm;
916: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 917: }
918:
1.267 schwarze 919: void
920: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
921: {
922: struct roff_node *n;
923:
924: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
925: n->string = roff_strdup(man->roff, word);
926: roff_node_append(man, n);
1.286 schwarze 927: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 928: man->next = ROFF_NEXT_SIBLING;
929: }
930:
931: void
932: roff_word_append(struct roff_man *man, const char *word)
933: {
934: struct roff_node *n;
935: char *addstr, *newstr;
936:
937: n = man->last;
938: addstr = roff_strdup(man->roff, word);
939: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
940: free(addstr);
941: free(n->string);
942: n->string = newstr;
943: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 944: }
945:
946: void
947: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
948: {
949: struct roff_node *n;
950:
951: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
952: roff_node_append(man, n);
953: man->next = ROFF_NEXT_CHILD;
954: }
955:
956: struct roff_node *
957: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
958: {
959: struct roff_node *n;
960:
961: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
962: roff_node_append(man, n);
963: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 964: return n;
1.267 schwarze 965: }
966:
1.266 schwarze 967: struct roff_node *
968: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
969: {
970: struct roff_node *n;
971:
972: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
973: roff_node_append(man, n);
974: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 975: return n;
1.266 schwarze 976: }
977:
978: struct roff_node *
979: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
980: {
981: struct roff_node *n;
982:
983: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
984: roff_node_append(man, n);
985: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 986: return n;
1.267 schwarze 987: }
988:
989: void
990: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
991: {
992: struct roff_node *n;
993:
994: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
995: n->eqn = eqn;
996: if (eqn->ln > man->last->line)
1.285 schwarze 997: n->flags |= NODE_LINE;
1.267 schwarze 998: roff_node_append(man, n);
999: man->next = ROFF_NEXT_SIBLING;
1000: }
1001:
1002: void
1003: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1004: {
1005: struct roff_node *n;
1006:
1007: if (man->macroset == MACROSET_MAN)
1008: man_breakscope(man, TOKEN_NONE);
1009: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1010: n->span = tbl;
1011: roff_node_append(man, n);
1.286 schwarze 1012: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 1013: man->next = ROFF_NEXT_SIBLING;
1.266 schwarze 1014: }
1015:
1016: void
1017: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1018: {
1019:
1020: /* Adjust siblings. */
1021:
1022: if (n->prev)
1023: n->prev->next = n->next;
1024: if (n->next)
1025: n->next->prev = n->prev;
1026:
1027: /* Adjust parent. */
1028:
1029: if (n->parent != NULL) {
1030: if (n->parent->child == n)
1031: n->parent->child = n->next;
1032: if (n->parent->last == n)
1033: n->parent->last = n->prev;
1034: }
1035:
1036: /* Adjust parse point. */
1037:
1038: if (man == NULL)
1039: return;
1040: if (man->last == n) {
1041: if (n->prev == NULL) {
1042: man->last = n->parent;
1043: man->next = ROFF_NEXT_CHILD;
1044: } else {
1045: man->last = n->prev;
1046: man->next = ROFF_NEXT_SIBLING;
1047: }
1048: }
1049: if (man->first == n)
1050: man->first = NULL;
1051: }
1052:
1053: void
1054: roff_node_free(struct roff_node *n)
1055: {
1056:
1057: if (n->args != NULL)
1058: mdoc_argv_free(n->args);
1059: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1060: free(n->norm);
1061: free(n->string);
1062: free(n);
1063: }
1064:
1065: void
1066: roff_node_delete(struct roff_man *man, struct roff_node *n)
1067: {
1068:
1069: while (n->child != NULL)
1070: roff_node_delete(man, n->child);
1071: roff_node_unlink(man, n);
1072: roff_node_free(n);
1.269 schwarze 1073: }
1074:
1075: void
1076: deroff(char **dest, const struct roff_node *n)
1077: {
1078: char *cp;
1079: size_t sz;
1080:
1081: if (n->type != ROFFT_TEXT) {
1082: for (n = n->child; n != NULL; n = n->next)
1083: deroff(dest, n);
1084: return;
1085: }
1086:
1.288 schwarze 1087: /* Skip leading whitespace. */
1.269 schwarze 1088:
1.288 schwarze 1089: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1090: if (cp[0] == '\\' && cp[1] != '\0' &&
1091: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1092: cp++;
1.288 schwarze 1093: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1094: break;
1095: }
1096:
1.289 schwarze 1097: /* Skip trailing backslash. */
1098:
1099: sz = strlen(cp);
1.290 schwarze 1100: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1101: sz--;
1102:
1.269 schwarze 1103: /* Skip trailing whitespace. */
1104:
1.289 schwarze 1105: for (; sz; sz--)
1.269 schwarze 1106: if ( ! isspace((unsigned char)cp[sz-1]))
1107: break;
1108:
1109: /* Skip empty strings. */
1110:
1111: if (sz == 0)
1112: return;
1113:
1114: if (*dest == NULL) {
1115: *dest = mandoc_strndup(cp, sz);
1116: return;
1117: }
1118:
1119: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1120: free(*dest);
1121: *dest = cp;
1.266 schwarze 1122: }
1123:
1124: /* --- main functions of the roff parser ---------------------------------- */
1125:
1.94 kristaps 1126: /*
1.206 schwarze 1127: * In the current line, expand escape sequences that tend to get
1128: * used in numerical expressions and conditional requests.
1129: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1130: */
1.172 schwarze 1131: static enum rofferr
1.238 schwarze 1132: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1133: {
1.208 schwarze 1134: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1135: const char *start; /* start of the string to process */
1.209 schwarze 1136: char *stesc; /* start of an escape sequence ('\\') */
1.108 schwarze 1137: const char *stnam; /* start of the name, after "[(*" */
1138: const char *cp; /* end of the name, e.g. before ']' */
1139: const char *res; /* the string to be substituted */
1.238 schwarze 1140: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1141: size_t maxl; /* expected length of the escape name */
1142: size_t naml; /* actual length of the escape name */
1.237 schwarze 1143: enum mandoc_esc esc; /* type of the escape sequence */
1144: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1145: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1146: int npos; /* position in numeric expression */
1.218 schwarze 1147: int arg_complete; /* argument not interrupted by eol */
1.206 schwarze 1148: char term; /* character terminating the escape */
1.94 kristaps 1149:
1.170 schwarze 1150: expand_count = 0;
1.238 schwarze 1151: start = buf->buf + pos;
1.205 schwarze 1152: stesc = strchr(start, '\0') - 1;
1153: while (stesc-- > start) {
1.170 schwarze 1154:
1.205 schwarze 1155: /* Search backwards for the next backslash. */
1156:
1.238 schwarze 1157: if (*stesc != '\\')
1.205 schwarze 1158: continue;
1159:
1160: /* If it is escaped, skip it. */
1161:
1162: for (cp = stesc - 1; cp >= start; cp--)
1.238 schwarze 1163: if (*cp != '\\')
1.205 schwarze 1164: break;
1165:
1.238 schwarze 1166: if ((stesc - cp) % 2 == 0) {
1.209 schwarze 1167: stesc = (char *)cp;
1.205 schwarze 1168: continue;
1169: }
1.108 schwarze 1170:
1.206 schwarze 1171: /* Decide whether to expand or to check only. */
1.108 schwarze 1172:
1.206 schwarze 1173: term = '\0';
1.205 schwarze 1174: cp = stesc + 1;
1.181 schwarze 1175: switch (*cp) {
1.207 schwarze 1176: case '*':
1.181 schwarze 1177: res = NULL;
1178: break;
1.207 schwarze 1179: case 'B':
1180: case 'w':
1.206 schwarze 1181: term = cp[1];
1182: /* FALLTHROUGH */
1.207 schwarze 1183: case 'n':
1.181 schwarze 1184: res = ubuf;
1185: break;
1186: default:
1.237 schwarze 1187: esc = mandoc_escape(&cp, &stnam, &inaml);
1188: if (esc == ESCAPE_ERROR ||
1189: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1190: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1191: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1192: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1193: "%.*s", (int)(cp - stesc), stesc);
1.205 schwarze 1194: continue;
1.152 kristaps 1195: }
1196:
1.205 schwarze 1197: if (EXPAND_LIMIT < ++expand_count) {
1198: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1199: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1200: return ROFF_IGN;
1.205 schwarze 1201: }
1.108 schwarze 1202:
1203: /*
1204: * The third character decides the length
1.181 schwarze 1205: * of the name of the string or register.
1.108 schwarze 1206: * Save a pointer to the name.
1207: */
1208:
1.238 schwarze 1209: if (term == '\0') {
1.206 schwarze 1210: switch (*++cp) {
1.207 schwarze 1211: case '\0':
1.206 schwarze 1212: maxl = 0;
1213: break;
1.207 schwarze 1214: case '(':
1.206 schwarze 1215: cp++;
1216: maxl = 2;
1217: break;
1.207 schwarze 1218: case '[':
1.206 schwarze 1219: cp++;
1220: term = ']';
1221: maxl = 0;
1222: break;
1223: default:
1224: maxl = 1;
1225: break;
1226: }
1227: } else {
1228: cp += 2;
1.94 kristaps 1229: maxl = 0;
1230: }
1.108 schwarze 1231: stnam = cp;
1.94 kristaps 1232:
1.108 schwarze 1233: /* Advance to the end of the name. */
1.94 kristaps 1234:
1.253 schwarze 1235: naml = 0;
1.218 schwarze 1236: arg_complete = 1;
1.253 schwarze 1237: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1238: if (*cp == '\0') {
1.219 schwarze 1239: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1240: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1241: arg_complete = 0;
1.206 schwarze 1242: break;
1.153 kristaps 1243: }
1.238 schwarze 1244: if (maxl == 0 && *cp == term) {
1.206 schwarze 1245: cp++;
1.253 schwarze 1246: break;
1247: }
1248: if (*cp++ != '\\' || stesc[1] != 'w') {
1249: naml++;
1250: continue;
1251: }
1252: switch (mandoc_escape(&cp, NULL, NULL)) {
1253: case ESCAPE_SPECIAL:
1254: case ESCAPE_UNICODE:
1255: case ESCAPE_NUMBERED:
1256: case ESCAPE_OVERSTRIKE:
1257: naml++;
1258: break;
1259: default:
1.94 kristaps 1260: break;
1.206 schwarze 1261: }
1.94 kristaps 1262: }
1263:
1.108 schwarze 1264: /*
1265: * Retrieve the replacement string; if it is
1266: * undefined, resume searching for escapes.
1267: */
1268:
1.206 schwarze 1269: switch (stesc[1]) {
1.207 schwarze 1270: case '*':
1.218 schwarze 1271: if (arg_complete)
1272: res = roff_getstrn(r, stnam, naml);
1.206 schwarze 1273: break;
1.207 schwarze 1274: case 'B':
1.206 schwarze 1275: npos = 0;
1.218 schwarze 1276: ubuf[0] = arg_complete &&
1.261 schwarze 1277: roff_evalnum(r, ln, stnam, &npos,
1278: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1279: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1280: ubuf[1] = '\0';
1281: break;
1.207 schwarze 1282: case 'n':
1.218 schwarze 1283: if (arg_complete)
1284: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1285: roff_getregn(r, stnam, naml));
1286: else
1287: ubuf[0] = '\0';
1.206 schwarze 1288: break;
1.207 schwarze 1289: case 'w':
1.218 schwarze 1290: /* use even incomplete args */
1.208 schwarze 1291: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1292: 24 * (int)naml);
1293: break;
1294: }
1.94 kristaps 1295:
1.238 schwarze 1296: if (res == NULL) {
1.219 schwarze 1297: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1298: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1299: "%.*s", (int)naml, stnam);
1.142 kristaps 1300: res = "";
1.246 schwarze 1301: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1302: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1303: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1304: return ROFF_IGN;
1.94 kristaps 1305: }
1306:
1.108 schwarze 1307: /* Replace the escape sequence by the string. */
1308:
1.209 schwarze 1309: *stesc = '\0';
1.238 schwarze 1310: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1311: buf->buf, res, cp) + 1;
1.94 kristaps 1312:
1.205 schwarze 1313: /* Prepare for the next replacement. */
1.94 kristaps 1314:
1.205 schwarze 1315: start = nbuf + pos;
1.238 schwarze 1316: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1317: free(buf->buf);
1318: buf->buf = nbuf;
1.154 kristaps 1319: }
1.277 schwarze 1320: return ROFF_CONT;
1.154 kristaps 1321: }
1322:
1323: /*
1.275 schwarze 1324: * Process text streams.
1.154 kristaps 1325: */
1326: static enum rofferr
1.238 schwarze 1327: roff_parsetext(struct buf *buf, int pos, int *offs)
1.154 kristaps 1328: {
1329: size_t sz;
1330: const char *start;
1.178 schwarze 1331: char *p;
1332: int isz;
1.154 kristaps 1333: enum mandoc_esc esc;
1334:
1.275 schwarze 1335: /* Spring the input line trap. */
1336:
1337: if (roffit_lines == 1) {
1338: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1339: free(buf->buf);
1340: buf->buf = p;
1341: buf->sz = isz + 1;
1342: *offs = 0;
1343: free(roffit_macro);
1344: roffit_lines = 0;
1.277 schwarze 1345: return ROFF_REPARSE;
1.275 schwarze 1346: } else if (roffit_lines > 1)
1347: --roffit_lines;
1348:
1349: /* Convert all breakable hyphens into ASCII_HYPH. */
1350:
1.238 schwarze 1351: start = p = buf->buf + pos;
1.154 kristaps 1352:
1.238 schwarze 1353: while (*p != '\0') {
1.154 kristaps 1354: sz = strcspn(p, "-\\");
1355: p += sz;
1356:
1.238 schwarze 1357: if (*p == '\0')
1.159 kristaps 1358: break;
1359:
1.238 schwarze 1360: if (*p == '\\') {
1.154 kristaps 1361: /* Skip over escapes. */
1362: p++;
1.189 schwarze 1363: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1364: if (esc == ESCAPE_ERROR)
1.154 kristaps 1365: break;
1.264 schwarze 1366: while (*p == '-')
1367: p++;
1.155 kristaps 1368: continue;
1.159 kristaps 1369: } else if (p == start) {
1.158 kristaps 1370: p++;
1.155 kristaps 1371: continue;
1.158 kristaps 1372: }
1.155 kristaps 1373:
1.171 schwarze 1374: if (isalpha((unsigned char)p[-1]) &&
1375: isalpha((unsigned char)p[1]))
1.155 kristaps 1376: *p = ASCII_HYPH;
1377: p++;
1.94 kristaps 1378: }
1.277 schwarze 1379: return ROFF_CONT;
1.94 kristaps 1380: }
1381:
1.67 kristaps 1382: enum rofferr
1.238 schwarze 1383: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1384: {
1.294 schwarze 1385: enum roff_tok t;
1.109 kristaps 1386: enum rofferr e;
1.238 schwarze 1387: int pos; /* parse point */
1.243 schwarze 1388: int spos; /* saved parse point for messages */
1.238 schwarze 1389: int ppos; /* original offset in buf->buf */
1390: int ctl; /* macro line (boolean) */
1391:
1392: ppos = pos = *offs;
1.79 kristaps 1393:
1.230 schwarze 1394: /* Handle in-line equation delimiters. */
1395:
1.236 schwarze 1396: if (r->tbl == NULL &&
1397: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1398: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1399: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1400: if (e == ROFF_REPARSE)
1.277 schwarze 1401: return e;
1.230 schwarze 1402: assert(e == ROFF_CONT);
1403: }
1404:
1405: /* Expand some escape sequences. */
1.94 kristaps 1406:
1.238 schwarze 1407: e = roff_res(r, buf, ln, pos);
1408: if (e == ROFF_IGN)
1.277 schwarze 1409: return e;
1.238 schwarze 1410: assert(e == ROFF_CONT);
1.94 kristaps 1411:
1.238 schwarze 1412: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1413:
1.94 kristaps 1414: /*
1.79 kristaps 1415: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1416: * text through the macro's filter.
1417: * Equations process all content themselves.
1418: * Tables process almost all content themselves, but we want
1419: * to warn about macros before passing it there.
1.79 kristaps 1420: */
1.74 kristaps 1421:
1.252 schwarze 1422: if (r->last != NULL && ! ctl) {
1.78 kristaps 1423: t = r->last->tok;
1.238 schwarze 1424: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1425: if (e == ROFF_IGN)
1.277 schwarze 1426: return e;
1.294 schwarze 1427: assert(e == ROFF_CONT);
1.182 schwarze 1428: }
1.252 schwarze 1429: if (r->eqn != NULL)
1.277 schwarze 1430: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.252 schwarze 1431: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.277 schwarze 1432: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.252 schwarze 1433: if ( ! ctl)
1.277 schwarze 1434: return roff_parsetext(buf, pos, offs);
1.228 schwarze 1435:
1436: /* Skip empty request lines. */
1437:
1.238 schwarze 1438: if (buf->buf[pos] == '"') {
1.228 schwarze 1439: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1440: ln, pos, NULL);
1.277 schwarze 1441: return ROFF_IGN;
1.238 schwarze 1442: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1443: return ROFF_IGN;
1.67 kristaps 1444:
1.79 kristaps 1445: /*
1446: * If a scope is open, go to the child handler for that macro,
1447: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1448: * Don't do so if an equation is open.
1.79 kristaps 1449: */
1.78 kristaps 1450:
1.79 kristaps 1451: if (r->last) {
1452: t = r->last->tok;
1.277 schwarze 1453: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1454: }
1.78 kristaps 1455:
1.243 schwarze 1456: /* No scope is open. This is a new request or macro. */
1457:
1458: spos = pos;
1459: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1460:
1461: /* Tables ignore most macros. */
1462:
1.294 schwarze 1463: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS)) {
1.243 schwarze 1464: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1465: ln, pos, buf->buf + spos);
1.257 schwarze 1466: if (t == ROFF_TS)
1.277 schwarze 1467: return ROFF_IGN;
1.257 schwarze 1468: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1469: pos++;
1.291 schwarze 1470: while (buf->buf[pos] == ' ')
1.257 schwarze 1471: pos++;
1.277 schwarze 1472: return tbl_read(r->tbl, ln, buf->buf, pos);
1.243 schwarze 1473: }
1474:
1.79 kristaps 1475: /*
1.243 schwarze 1476: * This is neither a roff request nor a user-defined macro.
1477: * Let the standard macro set parsers handle it.
1.79 kristaps 1478: */
1.67 kristaps 1479:
1.294 schwarze 1480: if (t == TOKEN_NONE)
1.277 schwarze 1481: return ROFF_CONT;
1.243 schwarze 1482:
1483: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1484:
1.296 schwarze 1485: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1486: }
1487:
1.117 kristaps 1488: void
1.74 kristaps 1489: roff_endparse(struct roff *r)
1490: {
1491:
1.110 kristaps 1492: if (r->last)
1.221 schwarze 1493: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1494: r->last->line, r->last->col,
1.295 schwarze 1495: roff_name[r->last->tok]);
1.117 kristaps 1496:
1.125 kristaps 1497: if (r->eqn) {
1.221 schwarze 1498: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1499: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.151 kristaps 1500: eqn_end(&r->eqn);
1.125 kristaps 1501: }
1502:
1.117 kristaps 1503: if (r->tbl) {
1.221 schwarze 1504: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1505: r->tbl->line, r->tbl->pos, "TS");
1.151 kristaps 1506: tbl_end(&r->tbl);
1.117 kristaps 1507: }
1.67 kristaps 1508: }
1509:
1510: /*
1511: * Parse a roff node's type from the input buffer. This must be in the
1512: * form of ".foo xxx" in the usual way.
1513: */
1.294 schwarze 1514: static enum roff_tok
1.214 schwarze 1515: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1516: {
1.214 schwarze 1517: char *cp;
1.106 kristaps 1518: const char *mac;
1519: size_t maclen;
1.294 schwarze 1520: enum roff_tok t;
1.67 kristaps 1521:
1.214 schwarze 1522: cp = buf + *pos;
1523:
1524: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1525: return TOKEN_NONE;
1.67 kristaps 1526:
1.214 schwarze 1527: mac = cp;
1528: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1529:
1.106 kristaps 1530: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.295 schwarze 1531: ? ROFF_USERDEF : roffhash_find(r->reqtab, mac, maclen);
1.67 kristaps 1532:
1.294 schwarze 1533: if (t != TOKEN_NONE)
1.214 schwarze 1534: *pos = cp - buf;
1.67 kristaps 1535:
1.277 schwarze 1536: return t;
1.67 kristaps 1537: }
1538:
1.266 schwarze 1539: /* --- handling of request blocks ----------------------------------------- */
1540:
1.67 kristaps 1541: static enum rofferr
1.76 kristaps 1542: roff_cblock(ROFF_ARGS)
1.67 kristaps 1543: {
1544:
1.79 kristaps 1545: /*
1546: * A block-close `..' should only be invoked as a child of an
1547: * ignore macro, otherwise raise a warning and just ignore it.
1548: */
1549:
1.238 schwarze 1550: if (r->last == NULL) {
1.221 schwarze 1551: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1552: ln, ppos, "..");
1.277 schwarze 1553: return ROFF_IGN;
1.76 kristaps 1554: }
1.67 kristaps 1555:
1.81 kristaps 1556: switch (r->last->tok) {
1.207 schwarze 1557: case ROFF_am:
1.220 schwarze 1558: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1559: case ROFF_ami:
1560: case ROFF_de:
1.108 schwarze 1561: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1562: case ROFF_dei:
1563: case ROFF_ig:
1.81 kristaps 1564: break;
1565: default:
1.221 schwarze 1566: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1567: ln, ppos, "..");
1.277 schwarze 1568: return ROFF_IGN;
1.76 kristaps 1569: }
1.67 kristaps 1570:
1.238 schwarze 1571: if (buf->buf[pos] != '\0')
1.217 schwarze 1572: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1573: ".. %s", buf->buf + pos);
1.71 kristaps 1574:
1575: roffnode_pop(r);
1.76 kristaps 1576: roffnode_cleanscope(r);
1.277 schwarze 1577: return ROFF_IGN;
1.71 kristaps 1578:
1.67 kristaps 1579: }
1580:
1.76 kristaps 1581: static void
1582: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1583: {
1584:
1.76 kristaps 1585: while (r->last) {
1.173 schwarze 1586: if (--r->last->endspan != 0)
1.76 kristaps 1587: break;
1588: roffnode_pop(r);
1589: }
1.67 kristaps 1590: }
1591:
1.195 schwarze 1592: static void
1593: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1594: {
1595:
1.76 kristaps 1596: if (NULL == r->last) {
1.221 schwarze 1597: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1598: ln, ppos, "\\}");
1.195 schwarze 1599: return;
1.76 kristaps 1600: }
1601:
1.82 kristaps 1602: switch (r->last->tok) {
1.207 schwarze 1603: case ROFF_el:
1604: case ROFF_ie:
1605: case ROFF_if:
1.82 kristaps 1606: break;
1607: default:
1.221 schwarze 1608: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1609: ln, ppos, "\\}");
1.195 schwarze 1610: return;
1.75 kristaps 1611: }
1612:
1.76 kristaps 1613: if (r->last->endspan > -1) {
1.221 schwarze 1614: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1615: ln, ppos, "\\}");
1.195 schwarze 1616: return;
1.76 kristaps 1617: }
1618:
1.75 kristaps 1619: roffnode_pop(r);
1.76 kristaps 1620: roffnode_cleanscope(r);
1.195 schwarze 1621: return;
1.76 kristaps 1622: }
1623:
1624: static enum rofferr
1.80 kristaps 1625: roff_block(ROFF_ARGS)
1.76 kristaps 1626: {
1.220 schwarze 1627: const char *name;
1628: char *iname, *cp;
1.213 schwarze 1629: size_t namesz;
1.106 kristaps 1630:
1.220 schwarze 1631: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1632:
1.238 schwarze 1633: if (tok == ROFF_de1)
1.220 schwarze 1634: tok = ROFF_de;
1.251 schwarze 1635: else if (tok == ROFF_dei1)
1636: tok = ROFF_dei;
1.238 schwarze 1637: else if (tok == ROFF_am1)
1.220 schwarze 1638: tok = ROFF_am;
1.251 schwarze 1639: else if (tok == ROFF_ami1)
1640: tok = ROFF_ami;
1.220 schwarze 1641:
1642: /* Parse the macro name argument. */
1643:
1.238 schwarze 1644: cp = buf->buf + pos;
1645: if (tok == ROFF_ig) {
1.220 schwarze 1646: iname = NULL;
1647: namesz = 0;
1648: } else {
1649: iname = cp;
1650: namesz = roff_getname(r, &cp, ln, ppos);
1651: iname[namesz] = '\0';
1652: }
1.107 kristaps 1653:
1.220 schwarze 1654: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1655:
1.238 schwarze 1656: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1657: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1658: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1659: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1660: "%.*s", (int)namesz, iname);
1661: namesz = 0;
1662: } else
1663: namesz = strlen(name);
1664: } else
1665: name = iname;
1.107 kristaps 1666:
1.238 schwarze 1667: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1668: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1669: ln, ppos, roff_name[tok]);
1.277 schwarze 1670: return ROFF_IGN;
1.220 schwarze 1671: }
1.80 kristaps 1672:
1.106 kristaps 1673: roffnode_push(r, tok, name, ln, ppos);
1674:
1675: /*
1676: * At the beginning of a `de' macro, clear the existing string
1677: * with the same name, if there is one. New content will be
1.193 schwarze 1678: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1679: */
1.107 kristaps 1680:
1.238 schwarze 1681: if (tok == ROFF_de || tok == ROFF_dei)
1.213 schwarze 1682: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.76 kristaps 1683:
1.238 schwarze 1684: if (*cp == '\0')
1.277 schwarze 1685: return ROFF_IGN;
1.78 kristaps 1686:
1.220 schwarze 1687: /* Get the custom end marker. */
1.107 kristaps 1688:
1.220 schwarze 1689: iname = cp;
1.213 schwarze 1690: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1691:
1692: /* Resolve the end marker if it is indirect. */
1693:
1.238 schwarze 1694: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1695: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1696: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1697: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1698: "%.*s", (int)namesz, iname);
1699: namesz = 0;
1700: } else
1701: namesz = strlen(name);
1702: } else
1703: name = iname;
1704:
1.213 schwarze 1705: if (namesz)
1706: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1707:
1.238 schwarze 1708: if (*cp != '\0')
1.217 schwarze 1709: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 1710: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 1711:
1.277 schwarze 1712: return ROFF_IGN;
1.78 kristaps 1713: }
1714:
1715: static enum rofferr
1.80 kristaps 1716: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1717: {
1.294 schwarze 1718: enum roff_tok t;
1.79 kristaps 1719: int i, j;
1720:
1721: /*
1722: * First check whether a custom macro exists at this level. If
1723: * it does, then check against it. This is some of groff's
1724: * stranger behaviours. If we encountered a custom end-scope
1725: * tag and that tag also happens to be a "real" macro, then we
1726: * need to try interpreting it again as a real macro. If it's
1727: * not, then return ignore. Else continue.
1728: */
1729:
1730: if (r->last->end) {
1.130 kristaps 1731: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1732: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1733: break;
1734:
1.238 schwarze 1735: if (r->last->end[j] == '\0' &&
1736: (buf->buf[i] == '\0' ||
1737: buf->buf[i] == ' ' ||
1738: buf->buf[i] == '\t')) {
1.79 kristaps 1739: roffnode_pop(r);
1740: roffnode_cleanscope(r);
1741:
1.238 schwarze 1742: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1743: i++;
1744:
1745: pos = i;
1.238 schwarze 1746: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 1747: TOKEN_NONE)
1.277 schwarze 1748: return ROFF_RERUN;
1749: return ROFF_IGN;
1.79 kristaps 1750: }
1751: }
1752:
1753: /*
1754: * If we have no custom end-query or lookup failed, then try
1755: * pulling it out of the hashtable.
1756: */
1757:
1.238 schwarze 1758: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1759:
1.238 schwarze 1760: if (t != ROFF_cblock) {
1761: if (tok != ROFF_ig)
1762: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1763: return ROFF_IGN;
1.106 kristaps 1764: }
1.79 kristaps 1765:
1.277 schwarze 1766: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1767: }
1768:
1769: static enum rofferr
1.80 kristaps 1770: roff_block_text(ROFF_ARGS)
1.78 kristaps 1771: {
1772:
1.238 schwarze 1773: if (tok != ROFF_ig)
1774: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1775:
1.277 schwarze 1776: return ROFF_IGN;
1.78 kristaps 1777: }
1778:
1779: static enum rofferr
1.82 kristaps 1780: roff_cond_sub(ROFF_ARGS)
1781: {
1.294 schwarze 1782: enum roff_tok t;
1.139 kristaps 1783: char *ep;
1.198 schwarze 1784: int rr;
1.82 kristaps 1785:
1786: rr = r->last->rule;
1.139 kristaps 1787: roffnode_cleanscope(r);
1.238 schwarze 1788: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.82 kristaps 1789:
1.139 kristaps 1790: /*
1.177 schwarze 1791: * Fully handle known macros when they are structurally
1792: * required or when the conditional evaluated to true.
1.87 kristaps 1793: */
1794:
1.294 schwarze 1795: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.277 schwarze 1796: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.144 kristaps 1797:
1.196 schwarze 1798: /*
1799: * If `\}' occurs on a macro line without a preceding macro,
1800: * drop the line completely.
1801: */
1802:
1.238 schwarze 1803: ep = buf->buf + pos;
1804: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1805: rr = 0;
1.196 schwarze 1806:
1.177 schwarze 1807: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1808:
1.238 schwarze 1809: while ((ep = strchr(ep, '\\')) != NULL) {
1810: if (*(++ep) == '}') {
1.197 schwarze 1811: *ep = '&';
1.238 schwarze 1812: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1813: }
1.247 schwarze 1814: if (*ep != '\0')
1815: ++ep;
1.177 schwarze 1816: }
1.277 schwarze 1817: return rr ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 1818: }
1819:
1820: static enum rofferr
1821: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1822: {
1.140 kristaps 1823: char *ep;
1.198 schwarze 1824: int rr;
1.82 kristaps 1825:
1826: rr = r->last->rule;
1.140 kristaps 1827: roffnode_cleanscope(r);
1.82 kristaps 1828:
1.238 schwarze 1829: ep = buf->buf + pos;
1830: while ((ep = strchr(ep, '\\')) != NULL) {
1831: if (*(++ep) == '}') {
1.197 schwarze 1832: *ep = '&';
1.238 schwarze 1833: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1834: }
1.247 schwarze 1835: if (*ep != '\0')
1836: ++ep;
1.78 kristaps 1837: }
1.277 schwarze 1838: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 1839: }
1840:
1.266 schwarze 1841: /* --- handling of numeric and conditional expressions -------------------- */
1842:
1.204 schwarze 1843: /*
1844: * Parse a single signed integer number. Stop at the first non-digit.
1845: * If there is at least one digit, return success and advance the
1846: * parse point, else return failure and let the parse point unchanged.
1847: * Ignore overflows, treat them just like the C language.
1848: */
1.184 schwarze 1849: static int
1.261 schwarze 1850: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 1851: {
1.261 schwarze 1852: int myres, scaled, n, p;
1.206 schwarze 1853:
1854: if (NULL == res)
1855: res = &myres;
1.184 schwarze 1856:
1857: p = *pos;
1858: n = v[p] == '-';
1.261 schwarze 1859: if (n || v[p] == '+')
1.184 schwarze 1860: p++;
1861:
1.261 schwarze 1862: if (flags & ROFFNUM_WHITE)
1863: while (isspace((unsigned char)v[p]))
1864: p++;
1865:
1.184 schwarze 1866: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 1867: *res = 10 * *res + v[p] - '0';
1.184 schwarze 1868: if (p == *pos + n)
1869: return 0;
1870:
1871: if (n)
1872: *res = -*res;
1873:
1.254 schwarze 1874: /* Each number may be followed by one optional scaling unit. */
1875:
1876: switch (v[p]) {
1877: case 'f':
1.261 schwarze 1878: scaled = *res * 65536;
1.254 schwarze 1879: break;
1880: case 'i':
1.261 schwarze 1881: scaled = *res * 240;
1.254 schwarze 1882: break;
1883: case 'c':
1.261 schwarze 1884: scaled = *res * 240 / 2.54;
1.254 schwarze 1885: break;
1886: case 'v':
1887: case 'P':
1.261 schwarze 1888: scaled = *res * 40;
1.254 schwarze 1889: break;
1890: case 'm':
1891: case 'n':
1.261 schwarze 1892: scaled = *res * 24;
1.254 schwarze 1893: break;
1894: case 'p':
1.261 schwarze 1895: scaled = *res * 10 / 3;
1.254 schwarze 1896: break;
1897: case 'u':
1.261 schwarze 1898: scaled = *res;
1.254 schwarze 1899: break;
1900: case 'M':
1.261 schwarze 1901: scaled = *res * 6 / 25;
1.254 schwarze 1902: break;
1903: default:
1.261 schwarze 1904: scaled = *res;
1.254 schwarze 1905: p--;
1906: break;
1907: }
1.261 schwarze 1908: if (flags & ROFFNUM_SCALE)
1909: *res = scaled;
1.254 schwarze 1910:
1911: *pos = p + 1;
1.277 schwarze 1912: return 1;
1.184 schwarze 1913: }
1914:
1.198 schwarze 1915: /*
1916: * Evaluate a string comparison condition.
1917: * The first character is the delimiter.
1918: * Succeed if the string up to its second occurrence
1919: * matches the string up to its third occurence.
1920: * Advance the cursor after the third occurrence
1921: * or lacking that, to the end of the line.
1922: */
1923: static int
1924: roff_evalstrcond(const char *v, int *pos)
1925: {
1926: const char *s1, *s2, *s3;
1927: int match;
1928:
1929: match = 0;
1930: s1 = v + *pos; /* initial delimiter */
1931: s2 = s1 + 1; /* for scanning the first string */
1932: s3 = strchr(s2, *s1); /* for scanning the second string */
1933:
1934: if (NULL == s3) /* found no middle delimiter */
1935: goto out;
1936:
1937: while ('\0' != *++s3) {
1938: if (*s2 != *s3) { /* mismatch */
1939: s3 = strchr(s3, *s1);
1940: break;
1941: }
1942: if (*s3 == *s1) { /* found the final delimiter */
1943: match = 1;
1944: break;
1945: }
1946: s2++;
1947: }
1948:
1949: out:
1950: if (NULL == s3)
1951: s3 = strchr(s2, '\0');
1.242 schwarze 1952: else if (*s3 != '\0')
1.198 schwarze 1953: s3++;
1954: *pos = s3 - v;
1.277 schwarze 1955: return match;
1.198 schwarze 1956: }
1957:
1.204 schwarze 1958: /*
1959: * Evaluate an optionally negated single character, numerical,
1960: * or string condition.
1961: */
1.198 schwarze 1962: static int
1.271 schwarze 1963: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 1964: {
1.271 schwarze 1965: char *cp, *name;
1966: size_t sz;
1.241 schwarze 1967: int number, savepos, wanttrue;
1.88 kristaps 1968:
1.198 schwarze 1969: if ('!' == v[*pos]) {
1970: wanttrue = 0;
1971: (*pos)++;
1972: } else
1973: wanttrue = 1;
1974:
1.88 kristaps 1975: switch (v[*pos]) {
1.240 schwarze 1976: case '\0':
1.277 schwarze 1977: return 0;
1.207 schwarze 1978: case 'n':
1979: case 'o':
1.88 kristaps 1980: (*pos)++;
1.277 schwarze 1981: return wanttrue;
1.207 schwarze 1982: case 'c':
1983: case 'd':
1984: case 'e':
1985: case 't':
1.239 schwarze 1986: case 'v':
1.88 kristaps 1987: (*pos)++;
1.277 schwarze 1988: return !wanttrue;
1.271 schwarze 1989: case 'r':
1990: cp = name = v + ++*pos;
1991: sz = roff_getname(r, &cp, ln, *pos);
1992: *pos = cp - v;
1.277 schwarze 1993: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.88 kristaps 1994: default:
1995: break;
1996: }
1997:
1.241 schwarze 1998: savepos = *pos;
1.261 schwarze 1999: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2000: return (number > 0) == wanttrue;
1.241 schwarze 2001: else if (*pos == savepos)
1.277 schwarze 2002: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2003: else
1.277 schwarze 2004: return 0;
1.88 kristaps 2005: }
2006:
1.74 kristaps 2007: static enum rofferr
1.103 kristaps 2008: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2009: {
1.123 schwarze 2010:
1.277 schwarze 2011: return ROFF_IGN;
1.89 kristaps 2012: }
2013:
1.104 kristaps 2014: static enum rofferr
1.251 schwarze 2015: roff_insec(ROFF_ARGS)
2016: {
2017:
2018: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2019: ln, ppos, roff_name[tok]);
1.277 schwarze 2020: return ROFF_IGN;
1.251 schwarze 2021: }
2022:
2023: static enum rofferr
2024: roff_unsupp(ROFF_ARGS)
2025: {
2026:
2027: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2028: ln, ppos, roff_name[tok]);
1.277 schwarze 2029: return ROFF_IGN;
1.251 schwarze 2030: }
2031:
2032: static enum rofferr
1.82 kristaps 2033: roff_cond(ROFF_ARGS)
1.74 kristaps 2034: {
1.173 schwarze 2035:
2036: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2037:
1.207 schwarze 2038: /*
1.134 kristaps 2039: * An `.el' has no conditional body: it will consume the value
2040: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2041: * defaults to DENY.
1.134 kristaps 2042: *
2043: * If we're not an `el', however, then evaluate the conditional.
2044: */
1.133 kristaps 2045:
1.238 schwarze 2046: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2047: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2048: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2049:
1.134 kristaps 2050: /*
2051: * An if-else will put the NEGATION of the current evaluated
2052: * conditional into the stack of rules.
2053: */
2054:
1.238 schwarze 2055: if (tok == ROFF_ie) {
1.223 schwarze 2056: if (r->rstackpos + 1 == r->rstacksz) {
2057: r->rstacksz += 16;
2058: r->rstack = mandoc_reallocarray(r->rstack,
2059: r->rstacksz, sizeof(int));
1.134 kristaps 2060: }
1.198 schwarze 2061: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2062: }
1.88 kristaps 2063:
2064: /* If the parent has false as its rule, then so do we. */
2065:
1.198 schwarze 2066: if (r->last->parent && !r->last->parent->rule)
2067: r->last->rule = 0;
1.88 kristaps 2068:
2069: /*
1.173 schwarze 2070: * Determine scope.
2071: * If there is nothing on the line after the conditional,
2072: * not even whitespace, use next-line scope.
1.88 kristaps 2073: */
1.74 kristaps 2074:
1.238 schwarze 2075: if (buf->buf[pos] == '\0') {
1.173 schwarze 2076: r->last->endspan = 2;
2077: goto out;
2078: }
2079:
1.238 schwarze 2080: while (buf->buf[pos] == ' ')
1.173 schwarze 2081: pos++;
2082:
2083: /* An opening brace requests multiline scope. */
1.75 kristaps 2084:
1.238 schwarze 2085: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2086: r->last->endspan = -1;
2087: pos += 2;
1.272 schwarze 2088: while (buf->buf[pos] == ' ')
2089: pos++;
1.173 schwarze 2090: goto out;
1.207 schwarze 2091: }
1.74 kristaps 2092:
1.77 kristaps 2093: /*
1.173 schwarze 2094: * Anything else following the conditional causes
2095: * single-line scope. Warn if the scope contains
2096: * nothing but trailing whitespace.
1.77 kristaps 2097: */
2098:
1.238 schwarze 2099: if (buf->buf[pos] == '\0')
1.216 schwarze 2100: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2101: ln, ppos, roff_name[tok]);
1.77 kristaps 2102:
1.173 schwarze 2103: r->last->endspan = 1;
1.74 kristaps 2104:
1.173 schwarze 2105: out:
1.75 kristaps 2106: *offs = pos;
1.277 schwarze 2107: return ROFF_RERUN;
1.83 schwarze 2108: }
2109:
2110: static enum rofferr
1.92 schwarze 2111: roff_ds(ROFF_ARGS)
2112: {
1.212 schwarze 2113: char *string;
2114: const char *name;
2115: size_t namesz;
1.96 kristaps 2116:
1.251 schwarze 2117: /* Ignore groff compatibility mode for now. */
2118:
2119: if (tok == ROFF_ds1)
2120: tok = ROFF_ds;
2121: else if (tok == ROFF_as1)
2122: tok = ROFF_as;
2123:
1.96 kristaps 2124: /*
1.212 schwarze 2125: * The first word is the name of the string.
2126: * If it is empty or terminated by an escape sequence,
2127: * abort the `ds' request without defining anything.
1.96 kristaps 2128: */
1.92 schwarze 2129:
1.238 schwarze 2130: name = string = buf->buf + pos;
2131: if (*name == '\0')
1.277 schwarze 2132: return ROFF_IGN;
1.92 schwarze 2133:
1.212 schwarze 2134: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2135: if (name[namesz] == '\\')
1.277 schwarze 2136: return ROFF_IGN;
1.212 schwarze 2137:
2138: /* Read past the initial double-quote, if any. */
1.238 schwarze 2139: if (*string == '"')
1.92 schwarze 2140: string++;
2141:
1.96 kristaps 2142: /* The rest is the value. */
1.212 schwarze 2143: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2144: ROFF_as == tok);
1.277 schwarze 2145: return ROFF_IGN;
1.92 schwarze 2146: }
2147:
1.204 schwarze 2148: /*
2149: * Parse a single operator, one or two characters long.
2150: * If the operator is recognized, return success and advance the
2151: * parse point, else return failure and let the parse point unchanged.
2152: */
2153: static int
2154: roff_getop(const char *v, int *pos, char *res)
2155: {
2156:
2157: *res = v[*pos];
2158:
2159: switch (*res) {
1.207 schwarze 2160: case '+':
2161: case '-':
2162: case '*':
2163: case '/':
2164: case '%':
2165: case '&':
2166: case ':':
1.204 schwarze 2167: break;
2168: case '<':
2169: switch (v[*pos + 1]) {
1.207 schwarze 2170: case '=':
1.204 schwarze 2171: *res = 'l';
2172: (*pos)++;
2173: break;
1.207 schwarze 2174: case '>':
1.204 schwarze 2175: *res = '!';
2176: (*pos)++;
2177: break;
1.207 schwarze 2178: case '?':
1.204 schwarze 2179: *res = 'i';
2180: (*pos)++;
2181: break;
2182: default:
2183: break;
2184: }
2185: break;
2186: case '>':
2187: switch (v[*pos + 1]) {
1.207 schwarze 2188: case '=':
1.204 schwarze 2189: *res = 'g';
2190: (*pos)++;
2191: break;
1.207 schwarze 2192: case '?':
1.204 schwarze 2193: *res = 'a';
2194: (*pos)++;
2195: break;
2196: default:
2197: break;
2198: }
2199: break;
2200: case '=':
2201: if ('=' == v[*pos + 1])
2202: (*pos)++;
2203: break;
2204: default:
1.277 schwarze 2205: return 0;
1.204 schwarze 2206: }
2207: (*pos)++;
2208:
1.277 schwarze 2209: return *res;
1.204 schwarze 2210: }
2211:
2212: /*
2213: * Evaluate either a parenthesized numeric expression
2214: * or a single signed integer number.
2215: */
2216: static int
1.235 schwarze 2217: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2218: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2219: {
2220:
2221: if ('(' != v[*pos])
1.277 schwarze 2222: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2223:
2224: (*pos)++;
1.261 schwarze 2225: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2226: return 0;
1.204 schwarze 2227:
1.206 schwarze 2228: /*
2229: * Omission of the closing parenthesis
2230: * is an error in validation mode,
2231: * but ignored in evaluation mode.
2232: */
2233:
1.204 schwarze 2234: if (')' == v[*pos])
2235: (*pos)++;
1.206 schwarze 2236: else if (NULL == res)
1.277 schwarze 2237: return 0;
1.204 schwarze 2238:
1.277 schwarze 2239: return 1;
1.204 schwarze 2240: }
2241:
2242: /*
2243: * Evaluate a complete numeric expression.
2244: * Proceed left to right, there is no concept of precedence.
2245: */
2246: static int
1.235 schwarze 2247: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2248: int *pos, int *res, int flags)
1.204 schwarze 2249: {
2250: int mypos, operand2;
2251: char operator;
2252:
2253: if (NULL == pos) {
2254: mypos = 0;
2255: pos = &mypos;
2256: }
2257:
1.261 schwarze 2258: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2259: while (isspace((unsigned char)v[*pos]))
2260: (*pos)++;
2261:
1.261 schwarze 2262: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2263: return 0;
1.204 schwarze 2264:
2265: while (1) {
1.261 schwarze 2266: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2267: while (isspace((unsigned char)v[*pos]))
2268: (*pos)++;
2269:
2270: if ( ! roff_getop(v, pos, &operator))
2271: break;
2272:
1.261 schwarze 2273: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2274: while (isspace((unsigned char)v[*pos]))
2275: (*pos)++;
2276:
1.261 schwarze 2277: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2278: return 0;
1.204 schwarze 2279:
1.261 schwarze 2280: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2281: while (isspace((unsigned char)v[*pos]))
2282: (*pos)++;
1.206 schwarze 2283:
2284: if (NULL == res)
2285: continue;
1.204 schwarze 2286:
2287: switch (operator) {
1.207 schwarze 2288: case '+':
1.204 schwarze 2289: *res += operand2;
2290: break;
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 '/':
1.244 schwarze 2298: if (operand2 == 0) {
1.235 schwarze 2299: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2300: r->parse, ln, *pos, v);
2301: *res = 0;
2302: break;
2303: }
1.204 schwarze 2304: *res /= operand2;
2305: break;
1.207 schwarze 2306: case '%':
1.244 schwarze 2307: if (operand2 == 0) {
2308: mandoc_msg(MANDOCERR_DIVZERO,
2309: r->parse, ln, *pos, v);
2310: *res = 0;
2311: break;
2312: }
1.204 schwarze 2313: *res %= operand2;
2314: break;
1.207 schwarze 2315: case '<':
1.204 schwarze 2316: *res = *res < operand2;
2317: break;
1.207 schwarze 2318: case '>':
1.204 schwarze 2319: *res = *res > operand2;
2320: break;
1.207 schwarze 2321: case 'l':
1.204 schwarze 2322: *res = *res <= operand2;
2323: break;
1.207 schwarze 2324: case 'g':
1.204 schwarze 2325: *res = *res >= operand2;
2326: break;
1.207 schwarze 2327: case '=':
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 'i':
1.204 schwarze 2340: if (operand2 < *res)
2341: *res = operand2;
2342: break;
1.207 schwarze 2343: case 'a':
1.204 schwarze 2344: if (operand2 > *res)
2345: *res = operand2;
2346: break;
2347: default:
2348: abort();
2349: }
2350: }
1.277 schwarze 2351: return 1;
1.204 schwarze 2352: }
2353:
1.266 schwarze 2354: /* --- register management ------------------------------------------------ */
2355:
1.180 schwarze 2356: void
1.187 schwarze 2357: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2358: {
1.180 schwarze 2359: struct roffreg *reg;
2360:
2361: /* Search for an existing register with the same name. */
2362: reg = r->regtab;
2363:
2364: while (reg && strcmp(name, reg->key.p))
2365: reg = reg->next;
1.147 kristaps 2366:
1.180 schwarze 2367: if (NULL == reg) {
2368: /* Create a new register. */
2369: reg = mandoc_malloc(sizeof(struct roffreg));
2370: reg->key.p = mandoc_strdup(name);
2371: reg->key.sz = strlen(name);
1.187 schwarze 2372: reg->val = 0;
1.180 schwarze 2373: reg->next = r->regtab;
2374: r->regtab = reg;
2375: }
2376:
1.187 schwarze 2377: if ('+' == sign)
2378: reg->val += val;
2379: else if ('-' == sign)
2380: reg->val -= val;
2381: else
2382: reg->val = val;
1.147 kristaps 2383: }
2384:
1.192 schwarze 2385: /*
2386: * Handle some predefined read-only number registers.
2387: * For now, return -1 if the requested register is not predefined;
2388: * in case a predefined read-only register having the value -1
2389: * were to turn up, another special value would have to be chosen.
2390: */
2391: static int
1.273 schwarze 2392: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2393: {
2394:
2395: switch (*name) {
1.273 schwarze 2396: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2397: return r->argc;
1.207 schwarze 2398: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2399: return 0;
1.207 schwarze 2400: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2401: return 1;
1.207 schwarze 2402: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2403: return 24;
1.207 schwarze 2404: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2405: return 0;
1.207 schwarze 2406: case 'T': /* Some output device is always defined. */
1.277 schwarze 2407: return 1;
1.207 schwarze 2408: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2409: return 40;
1.192 schwarze 2410: default:
1.277 schwarze 2411: return -1;
1.192 schwarze 2412: }
2413: }
2414:
1.181 schwarze 2415: int
1.180 schwarze 2416: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2417: {
1.180 schwarze 2418: struct roffreg *reg;
1.192 schwarze 2419: int val;
2420:
2421: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2422: val = roff_getregro(r, name + 1);
1.192 schwarze 2423: if (-1 != val)
1.277 schwarze 2424: return val;
1.192 schwarze 2425: }
1.180 schwarze 2426:
2427: for (reg = r->regtab; reg; reg = reg->next)
2428: if (0 == strcmp(name, reg->key.p))
1.277 schwarze 2429: return reg->val;
1.181 schwarze 2430:
1.277 schwarze 2431: return 0;
1.181 schwarze 2432: }
2433:
2434: static int
2435: roff_getregn(const struct roff *r, const char *name, size_t len)
2436: {
2437: struct roffreg *reg;
1.192 schwarze 2438: int val;
2439:
2440: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2441: val = roff_getregro(r, name + 1);
1.192 schwarze 2442: if (-1 != val)
1.277 schwarze 2443: return val;
1.192 schwarze 2444: }
1.181 schwarze 2445:
2446: for (reg = r->regtab; reg; reg = reg->next)
2447: if (len == reg->key.sz &&
2448: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2449: return reg->val;
1.271 schwarze 2450:
1.277 schwarze 2451: return 0;
1.271 schwarze 2452: }
2453:
2454: static int
2455: roff_hasregn(const struct roff *r, const char *name, size_t len)
2456: {
2457: struct roffreg *reg;
2458: int val;
2459:
2460: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2461: val = roff_getregro(r, name + 1);
1.271 schwarze 2462: if (-1 != val)
1.277 schwarze 2463: return 1;
1.271 schwarze 2464: }
2465:
2466: for (reg = r->regtab; reg; reg = reg->next)
2467: if (len == reg->key.sz &&
2468: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2469: return 1;
1.147 kristaps 2470:
1.277 schwarze 2471: return 0;
1.147 kristaps 2472: }
2473:
1.180 schwarze 2474: static void
2475: roff_freereg(struct roffreg *reg)
1.147 kristaps 2476: {
1.180 schwarze 2477: struct roffreg *old_reg;
1.147 kristaps 2478:
1.180 schwarze 2479: while (NULL != reg) {
2480: free(reg->key.p);
2481: old_reg = reg;
2482: reg = reg->next;
2483: free(old_reg);
2484: }
1.147 kristaps 2485: }
1.92 schwarze 2486:
2487: static enum rofferr
1.89 kristaps 2488: roff_nr(ROFF_ARGS)
1.83 schwarze 2489: {
1.212 schwarze 2490: char *key, *val;
2491: size_t keysz;
1.138 kristaps 2492: int iv;
1.187 schwarze 2493: char sign;
1.89 kristaps 2494:
1.238 schwarze 2495: key = val = buf->buf + pos;
2496: if (*key == '\0')
1.277 schwarze 2497: return ROFF_IGN;
1.212 schwarze 2498:
2499: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2500: if (key[keysz] == '\\')
1.277 schwarze 2501: return ROFF_IGN;
1.212 schwarze 2502: key[keysz] = '\0';
1.89 kristaps 2503:
1.187 schwarze 2504: sign = *val;
1.238 schwarze 2505: if (sign == '+' || sign == '-')
1.187 schwarze 2506: val++;
2507:
1.261 schwarze 2508: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2509: roff_setreg(r, key, iv, sign);
1.109 kristaps 2510:
1.277 schwarze 2511: return ROFF_IGN;
1.203 schwarze 2512: }
2513:
2514: static enum rofferr
2515: roff_rr(ROFF_ARGS)
2516: {
2517: struct roffreg *reg, **prev;
1.212 schwarze 2518: char *name, *cp;
2519: size_t namesz;
1.203 schwarze 2520:
1.238 schwarze 2521: name = cp = buf->buf + pos;
2522: if (*name == '\0')
1.277 schwarze 2523: return ROFF_IGN;
1.212 schwarze 2524: namesz = roff_getname(r, &cp, ln, pos);
2525: name[namesz] = '\0';
1.203 schwarze 2526:
2527: prev = &r->regtab;
2528: while (1) {
2529: reg = *prev;
1.238 schwarze 2530: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2531: break;
2532: prev = ®->next;
2533: }
1.238 schwarze 2534: if (reg != NULL) {
1.203 schwarze 2535: *prev = reg->next;
2536: free(reg->key.p);
2537: free(reg);
2538: }
1.277 schwarze 2539: return ROFF_IGN;
1.122 schwarze 2540: }
2541:
1.266 schwarze 2542: /* --- handler functions for roff requests -------------------------------- */
2543:
1.122 schwarze 2544: static enum rofferr
2545: roff_rm(ROFF_ARGS)
2546: {
2547: const char *name;
2548: char *cp;
1.212 schwarze 2549: size_t namesz;
1.122 schwarze 2550:
1.238 schwarze 2551: cp = buf->buf + pos;
2552: while (*cp != '\0') {
1.212 schwarze 2553: name = cp;
1.238 schwarze 2554: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2555: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.238 schwarze 2556: if (name[namesz] == '\\')
1.212 schwarze 2557: break;
1.122 schwarze 2558: }
1.277 schwarze 2559: return ROFF_IGN;
1.178 schwarze 2560: }
2561:
2562: static enum rofferr
2563: roff_it(ROFF_ARGS)
2564: {
2565: int iv;
2566:
2567: /* Parse the number of lines. */
1.261 schwarze 2568:
2569: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2570: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2571: ln, ppos, buf->buf + 1);
1.277 schwarze 2572: return ROFF_IGN;
1.178 schwarze 2573: }
2574:
1.262 schwarze 2575: while (isspace((unsigned char)buf->buf[pos]))
2576: pos++;
2577:
2578: /*
2579: * Arm the input line trap.
2580: * Special-casing "an-trap" is an ugly workaround to cope
2581: * with DocBook stupidly fiddling with man(7) internals.
2582: */
1.261 schwarze 2583:
1.178 schwarze 2584: roffit_lines = iv;
1.262 schwarze 2585: roffit_macro = mandoc_strdup(iv != 1 ||
2586: strcmp(buf->buf + pos, "an-trap") ?
2587: buf->buf + pos : "br");
1.277 schwarze 2588: return ROFF_IGN;
1.175 schwarze 2589: }
2590:
2591: static enum rofferr
2592: roff_Dd(ROFF_ARGS)
2593: {
2594: const char *const *cp;
2595:
1.227 schwarze 2596: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.175 schwarze 2597: for (cp = __mdoc_reserved; *cp; cp++)
2598: roff_setstr(r, *cp, NULL, 0);
2599:
1.227 schwarze 2600: if (r->format == 0)
2601: r->format = MPARSE_MDOC;
2602:
1.277 schwarze 2603: return ROFF_CONT;
1.175 schwarze 2604: }
2605:
2606: static enum rofferr
2607: roff_TH(ROFF_ARGS)
2608: {
2609: const char *const *cp;
2610:
1.227 schwarze 2611: if ((r->options & MPARSE_QUICK) == 0)
1.175 schwarze 2612: for (cp = __man_reserved; *cp; cp++)
2613: roff_setstr(r, *cp, NULL, 0);
2614:
1.227 schwarze 2615: if (r->format == 0)
2616: r->format = MPARSE_MAN;
2617:
1.277 schwarze 2618: return ROFF_CONT;
1.109 kristaps 2619: }
2620:
2621: static enum rofferr
2622: roff_TE(ROFF_ARGS)
2623: {
2624:
2625: if (NULL == r->tbl)
1.221 schwarze 2626: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2627: ln, ppos, "TE");
1.258 schwarze 2628: else if ( ! tbl_end(&r->tbl)) {
2629: free(buf->buf);
2630: buf->buf = mandoc_strdup(".sp");
2631: buf->sz = 4;
1.277 schwarze 2632: return ROFF_REPARSE;
1.258 schwarze 2633: }
1.277 schwarze 2634: return ROFF_IGN;
1.112 kristaps 2635: }
2636:
2637: static enum rofferr
2638: roff_T_(ROFF_ARGS)
2639: {
2640:
2641: if (NULL == r->tbl)
1.221 schwarze 2642: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2643: ln, ppos, "T&");
1.112 kristaps 2644: else
1.296 schwarze 2645: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 2646:
1.277 schwarze 2647: return ROFF_IGN;
1.109 kristaps 2648: }
2649:
1.230 schwarze 2650: /*
2651: * Handle in-line equation delimiters.
2652: */
2653: static enum rofferr
1.238 schwarze 2654: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2655: {
1.233 schwarze 2656: char *cp1, *cp2;
2657: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2658:
1.230 schwarze 2659: /*
2660: * Outside equations, look for an opening delimiter.
2661: * If we are inside an equation, we already know it is
2662: * in-line, or this function wouldn't have been called;
2663: * so look for a closing delimiter.
2664: */
2665:
1.238 schwarze 2666: cp1 = buf->buf + pos;
1.230 schwarze 2667: cp2 = strchr(cp1, r->eqn == NULL ?
2668: r->last_eqn->odelim : r->last_eqn->cdelim);
2669: if (cp2 == NULL)
1.277 schwarze 2670: return ROFF_CONT;
1.230 schwarze 2671:
1.233 schwarze 2672: *cp2++ = '\0';
2673: bef_pr = bef_nl = aft_nl = aft_pr = "";
2674:
2675: /* Handle preceding text, protecting whitespace. */
2676:
1.238 schwarze 2677: if (*buf->buf != '\0') {
1.233 schwarze 2678: if (r->eqn == NULL)
2679: bef_pr = "\\&";
2680: bef_nl = "\n";
2681: }
2682:
2683: /*
2684: * Prepare replacing the delimiter with an equation macro
2685: * and drop leading white space from the equation.
2686: */
1.230 schwarze 2687:
1.233 schwarze 2688: if (r->eqn == NULL) {
2689: while (*cp2 == ' ')
2690: cp2++;
2691: mac = ".EQ";
2692: } else
2693: mac = ".EN";
2694:
2695: /* Handle following text, protecting whitespace. */
2696:
2697: if (*cp2 != '\0') {
2698: aft_nl = "\n";
2699: if (r->eqn != NULL)
2700: aft_pr = "\\&";
2701: }
2702:
2703: /* Do the actual replacement. */
2704:
1.238 schwarze 2705: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2706: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2707: free(buf->buf);
2708: buf->buf = cp1;
1.230 schwarze 2709:
2710: /* Toggle the in-line state of the eqn subsystem. */
2711:
2712: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2713: return ROFF_REPARSE;
1.151 kristaps 2714: }
2715:
1.235 schwarze 2716: static enum rofferr
2717: roff_EQ(ROFF_ARGS)
1.125 kristaps 2718: {
1.151 kristaps 2719: struct eqn_node *e;
1.125 kristaps 2720:
1.238 schwarze 2721: assert(r->eqn == NULL);
1.235 schwarze 2722: e = eqn_alloc(ppos, ln, r->parse);
1.125 kristaps 2723:
1.230 schwarze 2724: if (r->last_eqn) {
1.125 kristaps 2725: r->last_eqn->next = e;
1.230 schwarze 2726: e->delim = r->last_eqn->delim;
2727: e->odelim = r->last_eqn->odelim;
2728: e->cdelim = r->last_eqn->cdelim;
2729: } else
1.125 kristaps 2730: r->first_eqn = r->last_eqn = e;
2731:
2732: r->eqn = r->last_eqn = e;
1.151 kristaps 2733:
1.238 schwarze 2734: if (buf->buf[pos] != '\0')
1.235 schwarze 2735: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2736: ".EQ %s", buf->buf + pos);
1.151 kristaps 2737:
1.277 schwarze 2738: return ROFF_IGN;
1.125 kristaps 2739: }
2740:
2741: static enum rofferr
2742: roff_EN(ROFF_ARGS)
2743: {
2744:
1.221 schwarze 2745: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.277 schwarze 2746: return ROFF_IGN;
1.125 kristaps 2747: }
2748:
2749: static enum rofferr
1.109 kristaps 2750: roff_TS(ROFF_ARGS)
2751: {
1.176 schwarze 2752: struct tbl_node *tbl;
1.89 kristaps 2753:
1.115 kristaps 2754: if (r->tbl) {
1.221 schwarze 2755: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2756: ln, ppos, "TS breaks TS");
1.151 kristaps 2757: tbl_end(&r->tbl);
1.115 kristaps 2758: }
1.83 schwarze 2759:
1.176 schwarze 2760: tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2761:
2762: if (r->last_tbl)
1.176 schwarze 2763: r->last_tbl->next = tbl;
1.113 kristaps 2764: else
1.176 schwarze 2765: r->first_tbl = r->last_tbl = tbl;
1.113 kristaps 2766:
1.176 schwarze 2767: r->tbl = r->last_tbl = tbl;
1.297 ! schwarze 2768: return ROFF_IGN;
! 2769: }
! 2770:
! 2771: static enum rofferr
! 2772: roff_onearg(ROFF_ARGS)
! 2773: {
! 2774: struct roff_node *n;
! 2775: char *cp;
! 2776:
! 2777: roff_elem_alloc(r->man, ln, ppos, tok);
! 2778: n = r->man->last;
! 2779:
! 2780: cp = buf->buf + pos;
! 2781: if (*cp != '\0') {
! 2782: while (*cp != '\0' && *cp != ' ')
! 2783: cp++;
! 2784: while (*cp == ' ')
! 2785: *cp++ = '\0';
! 2786: if (*cp != '\0')
! 2787: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
! 2788: r->parse, ln, cp - buf->buf,
! 2789: "%s ... %s", roff_name[tok], cp);
! 2790: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
! 2791: }
! 2792:
! 2793: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
! 2794: r->man->last = n;
! 2795: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 2796: return ROFF_IGN;
1.251 schwarze 2797: }
2798:
2799: static enum rofferr
1.296 schwarze 2800: roff_br(ROFF_ARGS)
1.251 schwarze 2801: {
1.296 schwarze 2802: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
2803: if (buf->buf[pos] != '\0')
2804: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2805: "%s %s", roff_name[tok], buf->buf + pos);
2806: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2807: r->man->next = ROFF_NEXT_SIBLING;
2808: return ROFF_IGN;
1.92 schwarze 2809: }
2810:
1.105 kristaps 2811: static enum rofferr
1.174 kristaps 2812: roff_cc(ROFF_ARGS)
2813: {
2814: const char *p;
2815:
1.238 schwarze 2816: p = buf->buf + pos;
1.174 kristaps 2817:
1.238 schwarze 2818: if (*p == '\0' || (r->control = *p++) == '.')
1.174 kristaps 2819: r->control = 0;
2820:
1.238 schwarze 2821: if (*p != '\0')
1.260 schwarze 2822: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2823: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 2824:
1.277 schwarze 2825: return ROFF_IGN;
1.174 kristaps 2826: }
2827:
2828: static enum rofferr
1.164 kristaps 2829: roff_tr(ROFF_ARGS)
2830: {
2831: const char *p, *first, *second;
2832: size_t fsz, ssz;
2833: enum mandoc_esc esc;
2834:
1.238 schwarze 2835: p = buf->buf + pos;
1.164 kristaps 2836:
1.238 schwarze 2837: if (*p == '\0') {
1.260 schwarze 2838: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 2839: return ROFF_IGN;
1.164 kristaps 2840: }
2841:
1.238 schwarze 2842: while (*p != '\0') {
1.164 kristaps 2843: fsz = ssz = 1;
2844:
2845: first = p++;
1.238 schwarze 2846: if (*first == '\\') {
1.164 kristaps 2847: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2848: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2849: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2850: ln, (int)(p - buf->buf), first);
1.277 schwarze 2851: return ROFF_IGN;
1.164 kristaps 2852: }
2853: fsz = (size_t)(p - first);
2854: }
2855:
2856: second = p++;
1.238 schwarze 2857: if (*second == '\\') {
1.164 kristaps 2858: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2859: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2860: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2861: ln, (int)(p - buf->buf), second);
1.277 schwarze 2862: return ROFF_IGN;
1.164 kristaps 2863: }
2864: ssz = (size_t)(p - second);
1.238 schwarze 2865: } else if (*second == '\0') {
1.260 schwarze 2866: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2867: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 2868: second = " ";
1.165 kristaps 2869: p--;
1.164 kristaps 2870: }
2871:
1.167 kristaps 2872: if (fsz > 1) {
1.207 schwarze 2873: roff_setstrn(&r->xmbtab, first, fsz,
2874: second, ssz, 0);
1.167 kristaps 2875: continue;
2876: }
2877:
1.238 schwarze 2878: if (r->xtab == NULL)
1.207 schwarze 2879: r->xtab = mandoc_calloc(128,
2880: sizeof(struct roffstr));
1.167 kristaps 2881:
2882: free(r->xtab[(int)*first].p);
2883: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
2884: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 2885: }
2886:
1.277 schwarze 2887: return ROFF_IGN;
1.164 kristaps 2888: }
2889:
2890: static enum rofferr
1.105 kristaps 2891: roff_so(ROFF_ARGS)
2892: {
1.249 schwarze 2893: char *name, *cp;
1.105 kristaps 2894:
1.238 schwarze 2895: name = buf->buf + pos;
1.224 schwarze 2896: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 2897:
2898: /*
2899: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
2900: * opening anything that's not in our cwd or anything beneath
2901: * it. Thus, explicitly disallow traversing up the file-system
2902: * or using absolute paths.
2903: */
2904:
1.238 schwarze 2905: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 2906: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
2907: ".so %s", name);
1.249 schwarze 2908: buf->sz = mandoc_asprintf(&cp,
2909: ".sp\nSee the file %s.\n.sp", name) + 1;
2910: free(buf->buf);
2911: buf->buf = cp;
2912: *offs = 0;
1.277 schwarze 2913: return ROFF_REPARSE;
1.105 kristaps 2914: }
2915:
2916: *offs = pos;
1.277 schwarze 2917: return ROFF_SO;
1.105 kristaps 2918: }
1.92 schwarze 2919:
1.266 schwarze 2920: /* --- user defined strings and macros ------------------------------------ */
2921:
1.106 kristaps 2922: static enum rofferr
2923: roff_userdef(ROFF_ARGS)
1.99 kristaps 2924: {
1.263 schwarze 2925: const char *arg[9], *ap;
1.106 kristaps 2926: char *cp, *n1, *n2;
1.292 schwarze 2927: int expand_count, i, ib, ie;
1.263 schwarze 2928: size_t asz, rsz;
1.106 kristaps 2929:
2930: /*
2931: * Collect pointers to macro argument strings
1.188 schwarze 2932: * and NUL-terminate them.
1.106 kristaps 2933: */
1.263 schwarze 2934:
1.273 schwarze 2935: r->argc = 0;
1.238 schwarze 2936: cp = buf->buf + pos;
1.273 schwarze 2937: for (i = 0; i < 9; i++) {
2938: if (*cp == '\0')
2939: arg[i] = "";
2940: else {
2941: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
2942: r->argc = i + 1;
2943: }
2944: }
1.99 kristaps 2945:
1.106 kristaps 2946: /*
2947: * Expand macro arguments.
1.99 kristaps 2948: */
1.263 schwarze 2949:
2950: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 2951: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 2952: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 2953: expand_count = 0;
1.263 schwarze 2954: while (*cp != '\0') {
2955:
2956: /* Scan ahead for the next argument invocation. */
2957:
2958: if (*cp++ != '\\')
2959: continue;
2960: if (*cp++ != '$')
2961: continue;
1.274 schwarze 2962: if (*cp == '*') { /* \\$* inserts all arguments */
2963: ib = 0;
2964: ie = r->argc - 1;
2965: } else { /* \\$1 .. \\$9 insert one argument */
2966: ib = ie = *cp - '1';
2967: if (ib < 0 || ib > 8)
2968: continue;
2969: }
1.263 schwarze 2970: cp -= 2;
1.292 schwarze 2971:
2972: /*
2973: * Prevent infinite recursion.
2974: */
2975:
2976: if (cp >= n2)
2977: expand_count = 1;
2978: else if (++expand_count > EXPAND_LIMIT) {
2979: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
2980: ln, (int)(cp - n1), NULL);
1.293 schwarze 2981: free(buf->buf);
2982: buf->buf = n1;
1.292 schwarze 2983: return ROFF_IGN;
2984: }
1.263 schwarze 2985:
2986: /*
2987: * Determine the size of the expanded argument,
2988: * taking escaping of quotes into account.
2989: */
2990:
1.274 schwarze 2991: asz = ie > ib ? ie - ib : 0; /* for blanks */
2992: for (i = ib; i <= ie; i++) {
2993: for (ap = arg[i]; *ap != '\0'; ap++) {
2994: asz++;
2995: if (*ap == '"')
2996: asz += 3;
2997: }
1.263 schwarze 2998: }
2999: if (asz != 3) {
3000:
3001: /*
3002: * Determine the size of the rest of the
3003: * unexpanded macro, including the NUL.
3004: */
3005:
3006: rsz = buf->sz - (cp - n1) - 3;
3007:
3008: /*
3009: * When shrinking, move before
3010: * releasing the storage.
3011: */
3012:
3013: if (asz < 3)
3014: memmove(cp + asz, cp + 3, rsz);
3015:
3016: /*
3017: * Resize the storage for the macro
3018: * and readjust the parse pointer.
3019: */
3020:
3021: buf->sz += asz - 3;
3022: n2 = mandoc_realloc(n1, buf->sz);
3023: cp = n2 + (cp - n1);
3024: n1 = n2;
3025:
3026: /*
3027: * When growing, make room
3028: * for the expanded argument.
3029: */
3030:
3031: if (asz > 3)
3032: memmove(cp + asz, cp + 3, rsz);
3033: }
3034:
3035: /* Copy the expanded argument, escaping quotes. */
3036:
3037: n2 = cp;
1.274 schwarze 3038: for (i = ib; i <= ie; i++) {
3039: for (ap = arg[i]; *ap != '\0'; ap++) {
3040: if (*ap == '"') {
3041: memcpy(n2, "\\(dq", 4);
3042: n2 += 4;
3043: } else
3044: *n2++ = *ap;
3045: }
3046: if (i < ie)
3047: *n2++ = ' ';
1.106 kristaps 3048: }
1.99 kristaps 3049: }
3050:
1.106 kristaps 3051: /*
3052: * Replace the macro invocation
3053: * by the expanded macro.
3054: */
1.263 schwarze 3055:
1.238 schwarze 3056: free(buf->buf);
3057: buf->buf = n1;
1.248 schwarze 3058: *offs = 0;
1.106 kristaps 3059:
1.277 schwarze 3060: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3061: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3062: }
1.121 schwarze 3063:
1.212 schwarze 3064: static size_t
1.121 schwarze 3065: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3066: {
3067: char *name, *cp;
1.212 schwarze 3068: size_t namesz;
1.121 schwarze 3069:
3070: name = *cpp;
3071: if ('\0' == *name)
1.277 schwarze 3072: return 0;
1.121 schwarze 3073:
1.212 schwarze 3074: /* Read until end of name and terminate it with NUL. */
3075: for (cp = name; 1; cp++) {
3076: if ('\0' == *cp || ' ' == *cp) {
3077: namesz = cp - name;
3078: break;
3079: }
1.121 schwarze 3080: if ('\\' != *cp)
3081: continue;
1.215 schwarze 3082: namesz = cp - name;
3083: if ('{' == cp[1] || '}' == cp[1])
3084: break;
1.121 schwarze 3085: cp++;
3086: if ('\\' == *cp)
3087: continue;
1.224 schwarze 3088: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3089: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3090: mandoc_escape((const char **)&cp, NULL, NULL);
3091: break;
1.121 schwarze 3092: }
3093:
3094: /* Read past spaces. */
3095: while (' ' == *cp)
3096: cp++;
3097:
3098: *cpp = cp;
1.277 schwarze 3099: return namesz;
1.121 schwarze 3100: }
3101:
1.106 kristaps 3102: /*
3103: * Store *string into the user-defined string called *name.
3104: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3105: * append == 0: replace mode
3106: * append == 1: single-line append mode
3107: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3108: */
1.94 kristaps 3109: static void
1.106 kristaps 3110: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3111: int append)
1.92 schwarze 3112: {
1.164 kristaps 3113:
3114: roff_setstrn(&r->strtab, name, strlen(name), string,
1.207 schwarze 3115: string ? strlen(string) : 0, append);
1.164 kristaps 3116: }
3117:
3118: static void
1.166 kristaps 3119: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3120: const char *string, size_t stringsz, int append)
1.164 kristaps 3121: {
1.166 kristaps 3122: struct roffkv *n;
1.164 kristaps 3123: char *c;
3124: int i;
3125: size_t oldch, newch;
1.92 schwarze 3126:
1.106 kristaps 3127: /* Search for an existing string with the same name. */
1.164 kristaps 3128: n = *r;
3129:
1.211 schwarze 3130: while (n && (namesz != n->key.sz ||
3131: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3132: n = n->next;
1.94 kristaps 3133:
3134: if (NULL == n) {
1.106 kristaps 3135: /* Create a new string table entry. */
1.166 kristaps 3136: n = mandoc_malloc(sizeof(struct roffkv));
3137: n->key.p = mandoc_strndup(name, namesz);
3138: n->key.sz = namesz;
3139: n->val.p = NULL;
3140: n->val.sz = 0;
1.164 kristaps 3141: n->next = *r;
3142: *r = n;
1.193 schwarze 3143: } else if (0 == append) {
1.166 kristaps 3144: free(n->val.p);
3145: n->val.p = NULL;
3146: n->val.sz = 0;
1.106 kristaps 3147: }
3148:
3149: if (NULL == string)
3150: return;
3151:
3152: /*
3153: * One additional byte for the '\n' in multiline mode,
3154: * and one for the terminating '\0'.
3155: */
1.193 schwarze 3156: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3157:
1.166 kristaps 3158: if (NULL == n->val.p) {
3159: n->val.p = mandoc_malloc(newch);
3160: *n->val.p = '\0';
1.106 kristaps 3161: oldch = 0;
3162: } else {
1.166 kristaps 3163: oldch = n->val.sz;
3164: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3165: }
3166:
3167: /* Skip existing content in the destination buffer. */
1.166 kristaps 3168: c = n->val.p + (int)oldch;
1.106 kristaps 3169:
3170: /* Append new content to the destination buffer. */
1.164 kristaps 3171: i = 0;
3172: while (i < (int)stringsz) {
1.106 kristaps 3173: /*
3174: * Rudimentary roff copy mode:
3175: * Handle escaped backslashes.
3176: */
1.164 kristaps 3177: if ('\\' == string[i] && '\\' == string[i + 1])
3178: i++;
3179: *c++ = string[i++];
1.106 kristaps 3180: }
1.94 kristaps 3181:
1.106 kristaps 3182: /* Append terminating bytes. */
1.193 schwarze 3183: if (1 < append)
1.106 kristaps 3184: *c++ = '\n';
1.163 kristaps 3185:
1.106 kristaps 3186: *c = '\0';
1.166 kristaps 3187: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3188: }
3189:
1.94 kristaps 3190: static const char *
3191: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.92 schwarze 3192: {
1.166 kristaps 3193: const struct roffkv *n;
1.191 schwarze 3194: int i;
1.92 schwarze 3195:
1.164 kristaps 3196: for (n = r->strtab; n; n = n->next)
1.207 schwarze 3197: if (0 == strncmp(name, n->key.p, len) &&
3198: '\0' == n->key.p[(int)len])
1.277 schwarze 3199: return n->val.p;
1.191 schwarze 3200:
3201: for (i = 0; i < PREDEFS_MAX; i++)
3202: if (0 == strncmp(name, predefs[i].name, len) &&
3203: '\0' == predefs[i].name[(int)len])
1.277 schwarze 3204: return predefs[i].str;
1.94 kristaps 3205:
1.277 schwarze 3206: return NULL;
1.92 schwarze 3207: }
3208:
1.94 kristaps 3209: static void
1.167 kristaps 3210: roff_freestr(struct roffkv *r)
1.92 schwarze 3211: {
1.166 kristaps 3212: struct roffkv *n, *nn;
1.92 schwarze 3213:
1.167 kristaps 3214: for (n = r; n; n = nn) {
1.166 kristaps 3215: free(n->key.p);
3216: free(n->val.p);
1.92 schwarze 3217: nn = n->next;
3218: free(n);
3219: }
1.114 kristaps 3220: }
1.266 schwarze 3221:
3222: /* --- accessors and utility functions ------------------------------------ */
1.114 kristaps 3223:
3224: const struct tbl_span *
3225: roff_span(const struct roff *r)
3226: {
1.207 schwarze 3227:
1.277 schwarze 3228: return r->tbl ? tbl_span(r->tbl) : NULL;
1.125 kristaps 3229: }
3230:
3231: const struct eqn *
3232: roff_eqn(const struct roff *r)
3233: {
1.207 schwarze 3234:
1.277 schwarze 3235: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.164 kristaps 3236: }
3237:
3238: /*
3239: * Duplicate an input string, making the appropriate character
3240: * conversations (as stipulated by `tr') along the way.
3241: * Returns a heap-allocated string with all the replacements made.
3242: */
3243: char *
3244: roff_strdup(const struct roff *r, const char *p)
3245: {
1.166 kristaps 3246: const struct roffkv *cp;
1.164 kristaps 3247: char *res;
3248: const char *pp;
3249: size_t ssz, sz;
3250: enum mandoc_esc esc;
3251:
1.167 kristaps 3252: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3253: return mandoc_strdup(p);
1.164 kristaps 3254: else if ('\0' == *p)
1.277 schwarze 3255: return mandoc_strdup("");
1.164 kristaps 3256:
3257: /*
3258: * Step through each character looking for term matches
3259: * (remember that a `tr' can be invoked with an escape, which is
3260: * a glyph but the escape is multi-character).
3261: * We only do this if the character hash has been initialised
3262: * and the string is >0 length.
3263: */
3264:
3265: res = NULL;
3266: ssz = 0;
3267:
3268: while ('\0' != *p) {
1.289 schwarze 3269: assert((unsigned int)*p < 128);
3270: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3271: sz = r->xtab[(int)*p].sz;
3272: res = mandoc_realloc(res, ssz + sz + 1);
3273: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3274: ssz += sz;
3275: p++;
3276: continue;
3277: } else if ('\\' != *p) {
3278: res = mandoc_realloc(res, ssz + 2);
3279: res[ssz++] = *p++;
3280: continue;
3281: }
3282:
1.164 kristaps 3283: /* Search for term matches. */
1.167 kristaps 3284: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3285: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3286: break;
3287:
3288: if (NULL != cp) {
3289: /*
3290: * A match has been found.
3291: * Append the match to the array and move
3292: * forward by its keysize.
3293: */
1.207 schwarze 3294: res = mandoc_realloc(res,
3295: ssz + cp->val.sz + 1);
1.166 kristaps 3296: memcpy(res + ssz, cp->val.p, cp->val.sz);
3297: ssz += cp->val.sz;
3298: p += (int)cp->key.sz;
1.164 kristaps 3299: continue;
3300: }
3301:
1.167 kristaps 3302: /*
3303: * Handle escapes carefully: we need to copy
3304: * over just the escape itself, or else we might
3305: * do replacements within the escape itself.
3306: * Make sure to pass along the bogus string.
3307: */
3308: pp = p++;
3309: esc = mandoc_escape(&p, NULL, NULL);
3310: if (ESCAPE_ERROR == esc) {
3311: sz = strlen(pp);
1.164 kristaps 3312: res = mandoc_realloc(res, ssz + sz + 1);
3313: memcpy(res + ssz, pp, sz);
1.167 kristaps 3314: break;
1.164 kristaps 3315: }
1.207 schwarze 3316: /*
3317: * We bail out on bad escapes.
1.167 kristaps 3318: * No need to warn: we already did so when
3319: * roff_res() was called.
3320: */
3321: sz = (int)(p - pp);
3322: res = mandoc_realloc(res, ssz + sz + 1);
3323: memcpy(res + ssz, pp, sz);
3324: ssz += sz;
1.164 kristaps 3325: }
3326:
3327: res[(int)ssz] = '\0';
1.277 schwarze 3328: return res;
1.227 schwarze 3329: }
3330:
3331: int
3332: roff_getformat(const struct roff *r)
3333: {
3334:
1.277 schwarze 3335: return r->format;
1.174 kristaps 3336: }
3337:
3338: /*
1.207 schwarze 3339: * Find out whether a line is a macro line or not.
1.174 kristaps 3340: * If it is, adjust the current position and return one; if it isn't,
3341: * return zero and don't change the current position.
3342: * If the control character has been set with `.cc', then let that grain
3343: * precedence.
3344: * This is slighly contrary to groff, where using the non-breaking
3345: * control character when `cc' has been invoked will cause the
3346: * non-breaking macro contents to be printed verbatim.
3347: */
3348: int
3349: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3350: {
3351: int pos;
3352:
3353: pos = *ppos;
3354:
3355: if (0 != r->control && cp[pos] == r->control)
3356: pos++;
3357: else if (0 != r->control)
1.277 schwarze 3358: return 0;
1.174 kristaps 3359: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3360: pos += 2;
3361: else if ('.' == cp[pos] || '\'' == cp[pos])
3362: pos++;
3363: else
1.277 schwarze 3364: return 0;
1.174 kristaps 3365:
3366: while (' ' == cp[pos] || '\t' == cp[pos])
3367: pos++;
3368:
3369: *ppos = pos;
1.277 schwarze 3370: return 1;
1.74 kristaps 3371: }
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