Annotation of mandoc/roff.c, Revision 1.300
1.300 ! schwarze 1: /* $Id: roff.c,v 1.299 2017/05/05 15:17:32 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 *);
1.300 ! schwarze 184: static enum rofferr roff_manyarg(ROFF_ARGS);
1.89 kristaps 185: static enum rofferr roff_nr(ROFF_ARGS);
1.297 schwarze 186: static enum rofferr roff_onearg(ROFF_ARGS);
1.294 schwarze 187: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 188: int, int);
1.238 schwarze 189: static enum rofferr roff_parsetext(struct buf *, int, int *);
190: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.122 schwarze 191: static enum rofferr roff_rm(ROFF_ARGS);
1.203 schwarze 192: static enum rofferr roff_rr(ROFF_ARGS);
1.94 kristaps 193: static void roff_setstr(struct roff *,
1.106 kristaps 194: const char *, const char *, int);
1.207 schwarze 195: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 196: size_t, const char *, size_t, int);
1.105 kristaps 197: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 198: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 199: static enum rofferr roff_Dd(ROFF_ARGS);
200: static enum rofferr roff_TH(ROFF_ARGS);
1.109 kristaps 201: static enum rofferr roff_TE(ROFF_ARGS);
202: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 203: static enum rofferr roff_EQ(ROFF_ARGS);
204: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 205: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 206: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 207: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 208:
1.266 schwarze 209: /* --- constant data ------------------------------------------------------ */
210:
1.261 schwarze 211: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
212: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
213:
1.294 schwarze 214: const char *__roff_name[MAN_MAX + 1] = {
1.299 schwarze 215: "br", "ft", "ll", "sp",
1.300 ! schwarze 216: "ta", NULL,
1.294 schwarze 217: "ab", "ad", "af", "aln",
218: "als", "am", "am1", "ami",
219: "ami1", "as", "as1", "asciify",
220: "backtrace", "bd", "bleedat", "blm",
221: "box", "boxa", "bp", "BP",
222: "break", "breakchar", "brnl", "brp",
223: "brpnl", "c2", "cc", "ce",
224: "cf", "cflags", "ch", "char",
225: "chop", "class", "close", "CL",
226: "color", "composite", "continue", "cp",
227: "cropat", "cs", "cu", "da",
228: "dch", "Dd", "de", "de1",
229: "defcolor", "dei", "dei1", "device",
230: "devicem", "di", "do", "ds",
231: "ds1", "dwh", "dt", "ec",
232: "ecr", "ecs", "el", "em",
233: "EN", "eo", "EP", "EQ",
234: "errprint", "ev", "evc", "ex",
235: "fallback", "fam", "fc", "fchar",
236: "fcolor", "fdeferlig", "feature", "fkern",
237: "fl", "flig", "fp", "fps",
238: "fschar", "fspacewidth", "fspecial", "ftr",
239: "fzoom", "gcolor", "hc", "hcode",
240: "hidechar", "hla", "hlm", "hpf",
241: "hpfa", "hpfcode", "hw", "hy",
242: "hylang", "hylen", "hym", "hypp",
243: "hys", "ie", "if", "ig",
244: "index", "it", "itc", "IX",
245: "kern", "kernafter", "kernbefore", "kernpair",
246: "lc", "lc_ctype", "lds", "length",
247: "letadj", "lf", "lg", "lhang",
248: "linetabs", "lnr", "lnrf", "lpfx",
249: "ls", "lsm", "lt", "mc",
250: "mediasize", "minss", "mk", "mso",
251: "na", "ne", "nh", "nhychar",
252: "nm", "nn", "nop", "nr",
253: "nrf", "nroff", "ns", "nx",
254: "open", "opena", "os", "output",
255: "padj", "papersize", "pc", "pev",
256: "pi", "PI", "pl", "pm",
257: "pn", "pnr", "po", "ps",
258: "psbb", "pshape", "pso", "ptr",
259: "pvs", "rchar", "rd", "recursionlimit",
260: "return", "rfschar", "rhang", "rj",
261: "rm", "rn", "rnn", "rr",
262: "rs", "rt", "schar", "sentchar",
263: "shc", "shift", "sizes", "so",
264: "spacewidth", "special", "spreadwarn", "ss",
265: "sty", "substring", "sv", "sy",
1.300 ! schwarze 266: "T&", "tc", "TE",
1.294 schwarze 267: "TH", "ti", "tkf", "tl",
268: "tm", "tm1", "tmc", "tr",
269: "track", "transchar", "trf", "trimat",
270: "trin", "trnt", "troff", "TS",
271: "uf", "ul", "unformat", "unwatch",
272: "unwatchn", "vpt", "vs", "warn",
273: "warnscale", "watch", "watchlength", "watchn",
274: "wh", "while", "write", "writec",
275: "writem", "xflag", ".", NULL,
276: "text",
277: "Dd", "Dt", "Os", "Sh",
278: "Ss", "Pp", "D1", "Dl",
279: "Bd", "Ed", "Bl", "El",
280: "It", "Ad", "An", "Ap",
281: "Ar", "Cd", "Cm", "Dv",
282: "Er", "Ev", "Ex", "Fa",
283: "Fd", "Fl", "Fn", "Ft",
284: "Ic", "In", "Li", "Nd",
285: "Nm", "Op", "Ot", "Pa",
286: "Rv", "St", "Va", "Vt",
287: "Xr", "%A", "%B", "%D",
288: "%I", "%J", "%N", "%O",
289: "%P", "%R", "%T", "%V",
290: "Ac", "Ao", "Aq", "At",
291: "Bc", "Bf", "Bo", "Bq",
292: "Bsx", "Bx", "Db", "Dc",
293: "Do", "Dq", "Ec", "Ef",
294: "Em", "Eo", "Fx", "Ms",
295: "No", "Ns", "Nx", "Ox",
296: "Pc", "Pf", "Po", "Pq",
297: "Qc", "Ql", "Qo", "Qq",
298: "Re", "Rs", "Sc", "So",
299: "Sq", "Sm", "Sx", "Sy",
300: "Tn", "Ux", "Xc", "Xo",
301: "Fo", "Fc", "Oo", "Oc",
302: "Bk", "Ek", "Bt", "Hf",
303: "Fr", "Ud", "Lb", "Lp",
304: "Lk", "Mt", "Brq", "Bro",
305: "Brc", "%C", "Es", "En",
1.299 schwarze 306: "Dx", "%Q", "%U", "Ta",
307: NULL,
1.294 schwarze 308: "TH", "SH", "SS", "TP",
309: "LP", "PP", "P", "IP",
310: "HP", "SM", "SB", "BI",
311: "IB", "BR", "RB", "R",
312: "B", "I", "IR", "RI",
1.299 schwarze 313: "nf", "fi",
1.294 schwarze 314: "RE", "RS", "DT", "UC",
1.297 schwarze 315: "PD", "AT", "in",
1.294 schwarze 316: "OP", "EX", "EE", "UR",
1.298 schwarze 317: "UE", NULL
1.294 schwarze 318: };
319: const char *const *roff_name = __roff_name;
320:
321: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 322: { roff_br, NULL, NULL, 0 }, /* br */
1.297 schwarze 323: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 324: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.299 schwarze 325: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 ! schwarze 326: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.296 schwarze 327: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 328: { roff_unsupp, NULL, NULL, 0 }, /* ab */
329: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
330: { roff_line_ignore, NULL, NULL, 0 }, /* af */
331: { roff_unsupp, NULL, NULL, 0 }, /* aln */
332: { roff_unsupp, NULL, NULL, 0 }, /* als */
333: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
334: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
335: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
336: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
337: { roff_ds, NULL, NULL, 0 }, /* as */
338: { roff_ds, NULL, NULL, 0 }, /* as1 */
339: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
340: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
341: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
342: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
343: { roff_unsupp, NULL, NULL, 0 }, /* blm */
344: { roff_unsupp, NULL, NULL, 0 }, /* box */
345: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
346: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
347: { roff_unsupp, NULL, NULL, 0 }, /* BP */
348: { roff_unsupp, NULL, NULL, 0 }, /* break */
349: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
350: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 351: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 352: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
353: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
354: { roff_cc, NULL, NULL, 0 }, /* cc */
355: { roff_line_ignore, NULL, NULL, 0 }, /* ce */
356: { roff_insec, NULL, NULL, 0 }, /* cf */
357: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
358: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
359: { roff_unsupp, NULL, NULL, 0 }, /* char */
360: { roff_unsupp, NULL, NULL, 0 }, /* chop */
361: { roff_line_ignore, NULL, NULL, 0 }, /* class */
362: { roff_insec, NULL, NULL, 0 }, /* close */
363: { roff_unsupp, NULL, NULL, 0 }, /* CL */
364: { roff_line_ignore, NULL, NULL, 0 }, /* color */
365: { roff_unsupp, NULL, NULL, 0 }, /* composite */
366: { roff_unsupp, NULL, NULL, 0 }, /* continue */
367: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
368: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
369: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
370: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
371: { roff_unsupp, NULL, NULL, 0 }, /* da */
372: { roff_unsupp, NULL, NULL, 0 }, /* dch */
373: { roff_Dd, NULL, NULL, 0 }, /* Dd */
374: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
375: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
376: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
377: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
378: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
379: { roff_unsupp, NULL, NULL, 0 }, /* device */
380: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
381: { roff_unsupp, NULL, NULL, 0 }, /* di */
382: { roff_unsupp, NULL, NULL, 0 }, /* do */
383: { roff_ds, NULL, NULL, 0 }, /* ds */
384: { roff_ds, NULL, NULL, 0 }, /* ds1 */
385: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
386: { roff_unsupp, NULL, NULL, 0 }, /* dt */
387: { roff_unsupp, NULL, NULL, 0 }, /* ec */
388: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
389: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
390: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
391: { roff_unsupp, NULL, NULL, 0 }, /* em */
392: { roff_EN, NULL, NULL, 0 }, /* EN */
393: { roff_unsupp, NULL, NULL, 0 }, /* eo */
394: { roff_unsupp, NULL, NULL, 0 }, /* EP */
395: { roff_EQ, NULL, NULL, 0 }, /* EQ */
396: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
397: { roff_unsupp, NULL, NULL, 0 }, /* ev */
398: { roff_unsupp, NULL, NULL, 0 }, /* evc */
399: { roff_unsupp, NULL, NULL, 0 }, /* ex */
400: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
401: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
402: { roff_unsupp, NULL, NULL, 0 }, /* fc */
403: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
404: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
405: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
406: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
407: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
408: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
409: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
410: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
411: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
412: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
413: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
414: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
415: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
416: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
417: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
418: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
419: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
420: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
421: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
422: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
423: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
424: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
425: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
426: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
427: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
428: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
429: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
430: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
431: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
432: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
433: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
434: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
435: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
436: { roff_unsupp, NULL, NULL, 0 }, /* index */
437: { roff_it, NULL, NULL, 0 }, /* it */
438: { roff_unsupp, NULL, NULL, 0 }, /* itc */
439: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
440: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
441: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
442: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
443: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
444: { roff_unsupp, NULL, NULL, 0 }, /* lc */
445: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
446: { roff_unsupp, NULL, NULL, 0 }, /* lds */
447: { roff_unsupp, NULL, NULL, 0 }, /* length */
448: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
449: { roff_insec, NULL, NULL, 0 }, /* lf */
450: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
451: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
452: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
453: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
454: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
455: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
456: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
457: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
458: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
459: { roff_line_ignore, NULL, NULL, 0 }, /* mc */
460: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
461: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
462: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
463: { roff_insec, NULL, NULL, 0 }, /* mso */
464: { roff_line_ignore, NULL, NULL, 0 }, /* na */
465: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
466: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
467: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
468: { roff_unsupp, NULL, NULL, 0 }, /* nm */
469: { roff_unsupp, NULL, NULL, 0 }, /* nn */
470: { roff_unsupp, NULL, NULL, 0 }, /* nop */
471: { roff_nr, NULL, NULL, 0 }, /* nr */
472: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
473: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
474: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
475: { roff_insec, NULL, NULL, 0 }, /* nx */
476: { roff_insec, NULL, NULL, 0 }, /* open */
477: { roff_insec, NULL, NULL, 0 }, /* opena */
478: { roff_line_ignore, NULL, NULL, 0 }, /* os */
479: { roff_unsupp, NULL, NULL, 0 }, /* output */
480: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
481: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
482: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
483: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
484: { roff_insec, NULL, NULL, 0 }, /* pi */
485: { roff_unsupp, NULL, NULL, 0 }, /* PI */
486: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
487: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
488: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
489: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
490: { roff_line_ignore, NULL, NULL, 0 }, /* po */
491: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
492: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
493: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
494: { roff_insec, NULL, NULL, 0 }, /* pso */
495: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
496: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
497: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
498: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
499: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
500: { roff_unsupp, NULL, NULL, 0 }, /* return */
501: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
502: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
503: { roff_line_ignore, NULL, NULL, 0 }, /* rj */
504: { roff_rm, NULL, NULL, 0 }, /* rm */
505: { roff_unsupp, NULL, NULL, 0 }, /* rn */
506: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
507: { roff_rr, NULL, NULL, 0 }, /* rr */
508: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
509: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
510: { roff_unsupp, NULL, NULL, 0 }, /* schar */
511: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
512: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
513: { roff_unsupp, NULL, NULL, 0 }, /* shift */
514: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
515: { roff_so, NULL, NULL, 0 }, /* so */
516: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
517: { roff_line_ignore, NULL, NULL, 0 }, /* special */
518: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
519: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
520: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
521: { roff_unsupp, NULL, NULL, 0 }, /* substring */
522: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
523: { roff_insec, NULL, NULL, 0 }, /* sy */
524: { roff_T_, NULL, NULL, 0 }, /* T& */
525: { roff_unsupp, NULL, NULL, 0 }, /* tc */
526: { roff_TE, NULL, NULL, 0 }, /* TE */
527: { roff_TH, NULL, NULL, 0 }, /* TH */
528: { roff_unsupp, NULL, NULL, 0 }, /* ti */
529: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
530: { roff_unsupp, NULL, NULL, 0 }, /* tl */
531: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
532: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
533: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
534: { roff_tr, NULL, NULL, 0 }, /* tr */
535: { roff_line_ignore, NULL, NULL, 0 }, /* track */
536: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
537: { roff_insec, NULL, NULL, 0 }, /* trf */
538: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
539: { roff_unsupp, NULL, NULL, 0 }, /* trin */
540: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
541: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
542: { roff_TS, NULL, NULL, 0 }, /* TS */
543: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
544: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
545: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
546: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
547: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
548: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
549: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
550: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
551: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
552: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
553: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
554: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
555: { roff_unsupp, NULL, NULL, 0 }, /* wh */
556: { roff_unsupp, NULL, NULL, 0 }, /* while */
557: { roff_insec, NULL, NULL, 0 }, /* write */
558: { roff_insec, NULL, NULL, 0 }, /* writec */
559: { roff_insec, NULL, NULL, 0 }, /* writem */
560: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
561: { roff_cblock, NULL, NULL, 0 }, /* . */
562: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 563: };
564:
1.200 schwarze 565: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.175 schwarze 566: const char *const __mdoc_reserved[] = {
567: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
568: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
569: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
570: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.200 schwarze 571: "Dt", "Dv", "Dx", "D1",
572: "Ec", "Ed", "Ef", "Ek", "El", "Em",
573: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.175 schwarze 574: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.200 schwarze 575: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
576: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.175 schwarze 577: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.200 schwarze 578: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
579: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
580: "Sc", "Sh", "Sm", "So", "Sq",
1.175 schwarze 581: "Ss", "St", "Sx", "Sy",
582: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.200 schwarze 583: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.175 schwarze 584: "%P", "%Q", "%R", "%T", "%U", "%V",
585: NULL
586: };
587:
1.200 schwarze 588: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.175 schwarze 589: const char *const __man_reserved[] = {
1.200 schwarze 590: "AT", "B", "BI", "BR", "DT",
591: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
592: "LP", "OP", "P", "PD", "PP",
593: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
594: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.175 schwarze 595: NULL
596: };
597:
1.141 kristaps 598: /* Array of injected predefined strings. */
599: #define PREDEFS_MAX 38
600: static const struct predef predefs[PREDEFS_MAX] = {
601: #include "predefs.in"
602: };
603:
1.178 schwarze 604: static int roffit_lines; /* number of lines to delay */
605: static char *roffit_macro; /* nil-terminated macro line */
606:
1.207 schwarze 607:
1.266 schwarze 608: /* --- request table ------------------------------------------------------ */
609:
1.295 schwarze 610: struct ohash *
611: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 612: {
1.295 schwarze 613: struct ohash *htab;
614: struct roffreq *req;
615: enum roff_tok tok;
616: size_t sz;
617: unsigned int slot;
1.85 kristaps 618:
1.295 schwarze 619: htab = mandoc_malloc(sizeof(*htab));
620: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 621:
1.295 schwarze 622: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 623: if (roff_name[tok] == NULL)
624: continue;
1.295 schwarze 625: sz = strlen(roff_name[tok]);
626: req = mandoc_malloc(sizeof(*req) + sz + 1);
627: req->tok = tok;
628: memcpy(req->name, roff_name[tok], sz + 1);
629: slot = ohash_qlookup(htab, req->name);
630: ohash_insert(htab, slot, req);
1.85 kristaps 631: }
1.295 schwarze 632: return htab;
1.85 kristaps 633: }
634:
1.295 schwarze 635: void
636: roffhash_free(struct ohash *htab)
1.67 kristaps 637: {
1.295 schwarze 638: struct roffreq *req;
639: unsigned int slot;
1.67 kristaps 640:
1.295 schwarze 641: if (htab == NULL)
642: return;
643: for (req = ohash_first(htab, &slot); req != NULL;
644: req = ohash_next(htab, &slot))
645: free(req);
646: ohash_delete(htab);
647: free(htab);
648: }
649:
650: enum roff_tok
651: roffhash_find(struct ohash *htab, const char *name, size_t sz)
652: {
653: struct roffreq *req;
654: const char *end;
655:
656: if (sz) {
657: end = name + sz;
658: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
659: } else
660: req = ohash_find(htab, ohash_qlookup(htab, name));
661: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 662: }
663:
1.266 schwarze 664: /* --- stack of request blocks -------------------------------------------- */
665:
1.67 kristaps 666: /*
667: * Pop the current node off of the stack of roff instructions currently
668: * pending.
669: */
670: static void
671: roffnode_pop(struct roff *r)
672: {
673: struct roffnode *p;
674:
1.75 kristaps 675: assert(r->last);
1.207 schwarze 676: p = r->last;
1.82 kristaps 677:
1.75 kristaps 678: r->last = r->last->parent;
1.106 kristaps 679: free(p->name);
680: free(p->end);
1.67 kristaps 681: free(p);
682: }
683:
684: /*
685: * Push a roff node onto the instruction stack. This must later be
686: * removed with roffnode_pop().
687: */
1.98 schwarze 688: static void
1.294 schwarze 689: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 690: int line, int col)
1.67 kristaps 691: {
692: struct roffnode *p;
693:
1.98 schwarze 694: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 695: p->tok = tok;
1.106 kristaps 696: if (name)
697: p->name = mandoc_strdup(name);
1.67 kristaps 698: p->parent = r->last;
699: p->line = line;
700: p->col = col;
1.198 schwarze 701: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 702:
703: r->last = p;
704: }
705:
1.266 schwarze 706: /* --- roff parser state data management ---------------------------------- */
707:
1.67 kristaps 708: static void
709: roff_free1(struct roff *r)
710: {
1.176 schwarze 711: struct tbl_node *tbl;
1.125 kristaps 712: struct eqn_node *e;
1.167 kristaps 713: int i;
1.67 kristaps 714:
1.176 schwarze 715: while (NULL != (tbl = r->first_tbl)) {
716: r->first_tbl = tbl->next;
717: tbl_free(tbl);
1.109 kristaps 718: }
1.113 kristaps 719: r->first_tbl = r->last_tbl = r->tbl = NULL;
720:
1.125 kristaps 721: while (NULL != (e = r->first_eqn)) {
722: r->first_eqn = e->next;
723: eqn_free(e);
724: }
725: r->first_eqn = r->last_eqn = r->eqn = NULL;
726:
1.67 kristaps 727: while (r->last)
728: roffnode_pop(r);
1.109 kristaps 729:
1.223 schwarze 730: free (r->rstack);
731: r->rstack = NULL;
732: r->rstacksz = 0;
733: r->rstackpos = -1;
734:
735: roff_freereg(r->regtab);
736: r->regtab = NULL;
737:
1.167 kristaps 738: roff_freestr(r->strtab);
739: roff_freestr(r->xmbtab);
740: r->strtab = r->xmbtab = NULL;
741:
742: if (r->xtab)
743: for (i = 0; i < 128; i++)
744: free(r->xtab[i].p);
745: free(r->xtab);
746: r->xtab = NULL;
1.67 kristaps 747: }
748:
749: void
750: roff_reset(struct roff *r)
751: {
752: roff_free1(r);
1.227 schwarze 753: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.174 kristaps 754: r->control = 0;
1.67 kristaps 755: }
756:
757: void
758: roff_free(struct roff *r)
759: {
760: roff_free1(r);
1.295 schwarze 761: roffhash_free(r->reqtab);
1.67 kristaps 762: free(r);
763: }
764:
765: struct roff *
1.279 schwarze 766: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 767: {
768: struct roff *r;
769:
1.98 schwarze 770: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 771: r->parse = parse;
1.295 schwarze 772: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.199 schwarze 773: r->options = options;
1.227 schwarze 774: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 775: r->rstackpos = -1;
1.277 schwarze 776: return r;
1.265 schwarze 777: }
778:
1.266 schwarze 779: /* --- syntax tree state data management ---------------------------------- */
780:
1.265 schwarze 781: static void
782: roff_man_free1(struct roff_man *man)
783: {
784:
1.266 schwarze 785: if (man->first != NULL)
786: roff_node_delete(man, man->first);
1.265 schwarze 787: free(man->meta.msec);
788: free(man->meta.vol);
789: free(man->meta.os);
790: free(man->meta.arch);
791: free(man->meta.title);
792: free(man->meta.name);
793: free(man->meta.date);
794: }
795:
796: static void
797: roff_man_alloc1(struct roff_man *man)
798: {
799:
800: memset(&man->meta, 0, sizeof(man->meta));
801: man->first = mandoc_calloc(1, sizeof(*man->first));
802: man->first->type = ROFFT_ROOT;
803: man->last = man->first;
804: man->last_es = NULL;
805: man->flags = 0;
806: man->macroset = MACROSET_NONE;
807: man->lastsec = man->lastnamed = SEC_NONE;
808: man->next = ROFF_NEXT_CHILD;
809: }
810:
811: void
812: roff_man_reset(struct roff_man *man)
813: {
814:
815: roff_man_free1(man);
816: roff_man_alloc1(man);
817: }
818:
819: void
820: roff_man_free(struct roff_man *man)
821: {
822:
823: roff_man_free1(man);
824: free(man);
825: }
826:
827: struct roff_man *
828: roff_man_alloc(struct roff *roff, struct mparse *parse,
829: const char *defos, int quick)
830: {
831: struct roff_man *man;
832:
833: man = mandoc_calloc(1, sizeof(*man));
834: man->parse = parse;
835: man->roff = roff;
836: man->defos = defos;
837: man->quick = quick;
838: roff_man_alloc1(man);
1.296 schwarze 839: roff->man = man;
1.277 schwarze 840: return man;
1.67 kristaps 841: }
842:
1.266 schwarze 843: /* --- syntax tree handling ----------------------------------------------- */
844:
845: struct roff_node *
846: roff_node_alloc(struct roff_man *man, int line, int pos,
847: enum roff_type type, int tok)
848: {
849: struct roff_node *n;
850:
851: n = mandoc_calloc(1, sizeof(*n));
852: n->line = line;
853: n->pos = pos;
854: n->tok = tok;
855: n->type = type;
856: n->sec = man->lastsec;
857:
858: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 859: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 860: else
1.285 schwarze 861: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 862: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 863: n->flags |= NODE_LINE;
1.266 schwarze 864: man->flags &= ~MDOC_NEWLINE;
865:
1.277 schwarze 866: return n;
1.266 schwarze 867: }
868:
869: void
870: roff_node_append(struct roff_man *man, struct roff_node *n)
871: {
872:
873: switch (man->next) {
874: case ROFF_NEXT_SIBLING:
1.281 schwarze 875: if (man->last->next != NULL) {
876: n->next = man->last->next;
877: man->last->next->prev = n;
878: } else
879: man->last->parent->last = n;
1.266 schwarze 880: man->last->next = n;
881: n->prev = man->last;
882: n->parent = man->last->parent;
883: break;
884: case ROFF_NEXT_CHILD:
1.287 schwarze 885: if (man->last->child != NULL) {
886: n->next = man->last->child;
887: man->last->child->prev = n;
888: } else
889: man->last->last = n;
1.266 schwarze 890: man->last->child = n;
891: n->parent = man->last;
892: break;
893: default:
894: abort();
895: }
1.282 schwarze 896: man->last = n;
1.266 schwarze 897:
898: switch (n->type) {
899: case ROFFT_HEAD:
900: n->parent->head = n;
901: break;
902: case ROFFT_BODY:
1.282 schwarze 903: if (n->end != ENDBODY_NOT)
904: return;
1.266 schwarze 905: n->parent->body = n;
906: break;
907: case ROFFT_TAIL:
908: n->parent->tail = n;
909: break;
910: default:
1.282 schwarze 911: return;
1.266 schwarze 912: }
1.282 schwarze 913:
914: /*
915: * Copy over the normalised-data pointer of our parent. Not
916: * everybody has one, but copying a null pointer is fine.
917: */
918:
919: n->norm = n->parent->norm;
920: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 921: }
922:
1.267 schwarze 923: void
924: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
925: {
926: struct roff_node *n;
927:
928: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
929: n->string = roff_strdup(man->roff, word);
930: roff_node_append(man, n);
1.286 schwarze 931: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 932: man->next = ROFF_NEXT_SIBLING;
933: }
934:
935: void
936: roff_word_append(struct roff_man *man, const char *word)
937: {
938: struct roff_node *n;
939: char *addstr, *newstr;
940:
941: n = man->last;
942: addstr = roff_strdup(man->roff, word);
943: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
944: free(addstr);
945: free(n->string);
946: n->string = newstr;
947: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 948: }
949:
950: void
951: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
952: {
953: struct roff_node *n;
954:
955: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
956: roff_node_append(man, n);
957: man->next = ROFF_NEXT_CHILD;
958: }
959:
960: struct roff_node *
961: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
962: {
963: struct roff_node *n;
964:
965: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
966: roff_node_append(man, n);
967: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 968: return n;
1.267 schwarze 969: }
970:
1.266 schwarze 971: struct roff_node *
972: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
973: {
974: struct roff_node *n;
975:
976: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
977: roff_node_append(man, n);
978: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 979: return n;
1.266 schwarze 980: }
981:
982: struct roff_node *
983: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
984: {
985: struct roff_node *n;
986:
987: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
988: roff_node_append(man, n);
989: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 990: return n;
1.267 schwarze 991: }
992:
993: void
994: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
995: {
996: struct roff_node *n;
997:
998: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
999: n->eqn = eqn;
1000: if (eqn->ln > man->last->line)
1.285 schwarze 1001: n->flags |= NODE_LINE;
1.267 schwarze 1002: roff_node_append(man, n);
1003: man->next = ROFF_NEXT_SIBLING;
1004: }
1005:
1006: void
1007: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1008: {
1009: struct roff_node *n;
1010:
1011: if (man->macroset == MACROSET_MAN)
1012: man_breakscope(man, TOKEN_NONE);
1013: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1014: n->span = tbl;
1015: roff_node_append(man, n);
1.286 schwarze 1016: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 1017: man->next = ROFF_NEXT_SIBLING;
1.266 schwarze 1018: }
1019:
1020: void
1021: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1022: {
1023:
1024: /* Adjust siblings. */
1025:
1026: if (n->prev)
1027: n->prev->next = n->next;
1028: if (n->next)
1029: n->next->prev = n->prev;
1030:
1031: /* Adjust parent. */
1032:
1033: if (n->parent != NULL) {
1034: if (n->parent->child == n)
1035: n->parent->child = n->next;
1036: if (n->parent->last == n)
1037: n->parent->last = n->prev;
1038: }
1039:
1040: /* Adjust parse point. */
1041:
1042: if (man == NULL)
1043: return;
1044: if (man->last == n) {
1045: if (n->prev == NULL) {
1046: man->last = n->parent;
1047: man->next = ROFF_NEXT_CHILD;
1048: } else {
1049: man->last = n->prev;
1050: man->next = ROFF_NEXT_SIBLING;
1051: }
1052: }
1053: if (man->first == n)
1054: man->first = NULL;
1055: }
1056:
1057: void
1058: roff_node_free(struct roff_node *n)
1059: {
1060:
1061: if (n->args != NULL)
1062: mdoc_argv_free(n->args);
1063: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1064: free(n->norm);
1065: free(n->string);
1066: free(n);
1067: }
1068:
1069: void
1070: roff_node_delete(struct roff_man *man, struct roff_node *n)
1071: {
1072:
1073: while (n->child != NULL)
1074: roff_node_delete(man, n->child);
1075: roff_node_unlink(man, n);
1076: roff_node_free(n);
1.269 schwarze 1077: }
1078:
1079: void
1080: deroff(char **dest, const struct roff_node *n)
1081: {
1082: char *cp;
1083: size_t sz;
1084:
1085: if (n->type != ROFFT_TEXT) {
1086: for (n = n->child; n != NULL; n = n->next)
1087: deroff(dest, n);
1088: return;
1089: }
1090:
1.288 schwarze 1091: /* Skip leading whitespace. */
1.269 schwarze 1092:
1.288 schwarze 1093: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1094: if (cp[0] == '\\' && cp[1] != '\0' &&
1095: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1096: cp++;
1.288 schwarze 1097: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1098: break;
1099: }
1100:
1.289 schwarze 1101: /* Skip trailing backslash. */
1102:
1103: sz = strlen(cp);
1.290 schwarze 1104: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1105: sz--;
1106:
1.269 schwarze 1107: /* Skip trailing whitespace. */
1108:
1.289 schwarze 1109: for (; sz; sz--)
1.269 schwarze 1110: if ( ! isspace((unsigned char)cp[sz-1]))
1111: break;
1112:
1113: /* Skip empty strings. */
1114:
1115: if (sz == 0)
1116: return;
1117:
1118: if (*dest == NULL) {
1119: *dest = mandoc_strndup(cp, sz);
1120: return;
1121: }
1122:
1123: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1124: free(*dest);
1125: *dest = cp;
1.266 schwarze 1126: }
1127:
1128: /* --- main functions of the roff parser ---------------------------------- */
1129:
1.94 kristaps 1130: /*
1.206 schwarze 1131: * In the current line, expand escape sequences that tend to get
1132: * used in numerical expressions and conditional requests.
1133: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1134: */
1.172 schwarze 1135: static enum rofferr
1.238 schwarze 1136: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1137: {
1.208 schwarze 1138: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1139: const char *start; /* start of the string to process */
1.209 schwarze 1140: char *stesc; /* start of an escape sequence ('\\') */
1.108 schwarze 1141: const char *stnam; /* start of the name, after "[(*" */
1142: const char *cp; /* end of the name, e.g. before ']' */
1143: const char *res; /* the string to be substituted */
1.238 schwarze 1144: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1145: size_t maxl; /* expected length of the escape name */
1146: size_t naml; /* actual length of the escape name */
1.237 schwarze 1147: enum mandoc_esc esc; /* type of the escape sequence */
1148: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1149: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1150: int npos; /* position in numeric expression */
1.218 schwarze 1151: int arg_complete; /* argument not interrupted by eol */
1.206 schwarze 1152: char term; /* character terminating the escape */
1.94 kristaps 1153:
1.170 schwarze 1154: expand_count = 0;
1.238 schwarze 1155: start = buf->buf + pos;
1.205 schwarze 1156: stesc = strchr(start, '\0') - 1;
1157: while (stesc-- > start) {
1.170 schwarze 1158:
1.205 schwarze 1159: /* Search backwards for the next backslash. */
1160:
1.238 schwarze 1161: if (*stesc != '\\')
1.205 schwarze 1162: continue;
1163:
1164: /* If it is escaped, skip it. */
1165:
1166: for (cp = stesc - 1; cp >= start; cp--)
1.238 schwarze 1167: if (*cp != '\\')
1.205 schwarze 1168: break;
1169:
1.238 schwarze 1170: if ((stesc - cp) % 2 == 0) {
1.209 schwarze 1171: stesc = (char *)cp;
1.205 schwarze 1172: continue;
1173: }
1.108 schwarze 1174:
1.206 schwarze 1175: /* Decide whether to expand or to check only. */
1.108 schwarze 1176:
1.206 schwarze 1177: term = '\0';
1.205 schwarze 1178: cp = stesc + 1;
1.181 schwarze 1179: switch (*cp) {
1.207 schwarze 1180: case '*':
1.181 schwarze 1181: res = NULL;
1182: break;
1.207 schwarze 1183: case 'B':
1184: case 'w':
1.206 schwarze 1185: term = cp[1];
1186: /* FALLTHROUGH */
1.207 schwarze 1187: case 'n':
1.181 schwarze 1188: res = ubuf;
1189: break;
1190: default:
1.237 schwarze 1191: esc = mandoc_escape(&cp, &stnam, &inaml);
1192: if (esc == ESCAPE_ERROR ||
1193: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1194: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1195: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1196: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1197: "%.*s", (int)(cp - stesc), stesc);
1.205 schwarze 1198: continue;
1.152 kristaps 1199: }
1200:
1.205 schwarze 1201: if (EXPAND_LIMIT < ++expand_count) {
1202: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1203: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1204: return ROFF_IGN;
1.205 schwarze 1205: }
1.108 schwarze 1206:
1207: /*
1208: * The third character decides the length
1.181 schwarze 1209: * of the name of the string or register.
1.108 schwarze 1210: * Save a pointer to the name.
1211: */
1212:
1.238 schwarze 1213: if (term == '\0') {
1.206 schwarze 1214: switch (*++cp) {
1.207 schwarze 1215: case '\0':
1.206 schwarze 1216: maxl = 0;
1217: break;
1.207 schwarze 1218: case '(':
1.206 schwarze 1219: cp++;
1220: maxl = 2;
1221: break;
1.207 schwarze 1222: case '[':
1.206 schwarze 1223: cp++;
1224: term = ']';
1225: maxl = 0;
1226: break;
1227: default:
1228: maxl = 1;
1229: break;
1230: }
1231: } else {
1232: cp += 2;
1.94 kristaps 1233: maxl = 0;
1234: }
1.108 schwarze 1235: stnam = cp;
1.94 kristaps 1236:
1.108 schwarze 1237: /* Advance to the end of the name. */
1.94 kristaps 1238:
1.253 schwarze 1239: naml = 0;
1.218 schwarze 1240: arg_complete = 1;
1.253 schwarze 1241: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1242: if (*cp == '\0') {
1.219 schwarze 1243: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1244: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1245: arg_complete = 0;
1.206 schwarze 1246: break;
1.153 kristaps 1247: }
1.238 schwarze 1248: if (maxl == 0 && *cp == term) {
1.206 schwarze 1249: cp++;
1.253 schwarze 1250: break;
1251: }
1252: if (*cp++ != '\\' || stesc[1] != 'w') {
1253: naml++;
1254: continue;
1255: }
1256: switch (mandoc_escape(&cp, NULL, NULL)) {
1257: case ESCAPE_SPECIAL:
1258: case ESCAPE_UNICODE:
1259: case ESCAPE_NUMBERED:
1260: case ESCAPE_OVERSTRIKE:
1261: naml++;
1262: break;
1263: default:
1.94 kristaps 1264: break;
1.206 schwarze 1265: }
1.94 kristaps 1266: }
1267:
1.108 schwarze 1268: /*
1269: * Retrieve the replacement string; if it is
1270: * undefined, resume searching for escapes.
1271: */
1272:
1.206 schwarze 1273: switch (stesc[1]) {
1.207 schwarze 1274: case '*':
1.218 schwarze 1275: if (arg_complete)
1276: res = roff_getstrn(r, stnam, naml);
1.206 schwarze 1277: break;
1.207 schwarze 1278: case 'B':
1.206 schwarze 1279: npos = 0;
1.218 schwarze 1280: ubuf[0] = arg_complete &&
1.261 schwarze 1281: roff_evalnum(r, ln, stnam, &npos,
1282: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1283: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1284: ubuf[1] = '\0';
1285: break;
1.207 schwarze 1286: case 'n':
1.218 schwarze 1287: if (arg_complete)
1288: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1289: roff_getregn(r, stnam, naml));
1290: else
1291: ubuf[0] = '\0';
1.206 schwarze 1292: break;
1.207 schwarze 1293: case 'w':
1.218 schwarze 1294: /* use even incomplete args */
1.208 schwarze 1295: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1296: 24 * (int)naml);
1297: break;
1298: }
1.94 kristaps 1299:
1.238 schwarze 1300: if (res == NULL) {
1.219 schwarze 1301: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1302: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1303: "%.*s", (int)naml, stnam);
1.142 kristaps 1304: res = "";
1.246 schwarze 1305: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1306: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1307: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1308: return ROFF_IGN;
1.94 kristaps 1309: }
1310:
1.108 schwarze 1311: /* Replace the escape sequence by the string. */
1312:
1.209 schwarze 1313: *stesc = '\0';
1.238 schwarze 1314: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1315: buf->buf, res, cp) + 1;
1.94 kristaps 1316:
1.205 schwarze 1317: /* Prepare for the next replacement. */
1.94 kristaps 1318:
1.205 schwarze 1319: start = nbuf + pos;
1.238 schwarze 1320: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1321: free(buf->buf);
1322: buf->buf = nbuf;
1.154 kristaps 1323: }
1.277 schwarze 1324: return ROFF_CONT;
1.154 kristaps 1325: }
1326:
1327: /*
1.275 schwarze 1328: * Process text streams.
1.154 kristaps 1329: */
1330: static enum rofferr
1.238 schwarze 1331: roff_parsetext(struct buf *buf, int pos, int *offs)
1.154 kristaps 1332: {
1333: size_t sz;
1334: const char *start;
1.178 schwarze 1335: char *p;
1336: int isz;
1.154 kristaps 1337: enum mandoc_esc esc;
1338:
1.275 schwarze 1339: /* Spring the input line trap. */
1340:
1341: if (roffit_lines == 1) {
1342: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1343: free(buf->buf);
1344: buf->buf = p;
1345: buf->sz = isz + 1;
1346: *offs = 0;
1347: free(roffit_macro);
1348: roffit_lines = 0;
1.277 schwarze 1349: return ROFF_REPARSE;
1.275 schwarze 1350: } else if (roffit_lines > 1)
1351: --roffit_lines;
1352:
1353: /* Convert all breakable hyphens into ASCII_HYPH. */
1354:
1.238 schwarze 1355: start = p = buf->buf + pos;
1.154 kristaps 1356:
1.238 schwarze 1357: while (*p != '\0') {
1.154 kristaps 1358: sz = strcspn(p, "-\\");
1359: p += sz;
1360:
1.238 schwarze 1361: if (*p == '\0')
1.159 kristaps 1362: break;
1363:
1.238 schwarze 1364: if (*p == '\\') {
1.154 kristaps 1365: /* Skip over escapes. */
1366: p++;
1.189 schwarze 1367: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1368: if (esc == ESCAPE_ERROR)
1.154 kristaps 1369: break;
1.264 schwarze 1370: while (*p == '-')
1371: p++;
1.155 kristaps 1372: continue;
1.159 kristaps 1373: } else if (p == start) {
1.158 kristaps 1374: p++;
1.155 kristaps 1375: continue;
1.158 kristaps 1376: }
1.155 kristaps 1377:
1.171 schwarze 1378: if (isalpha((unsigned char)p[-1]) &&
1379: isalpha((unsigned char)p[1]))
1.155 kristaps 1380: *p = ASCII_HYPH;
1381: p++;
1.94 kristaps 1382: }
1.277 schwarze 1383: return ROFF_CONT;
1.94 kristaps 1384: }
1385:
1.67 kristaps 1386: enum rofferr
1.238 schwarze 1387: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1388: {
1.294 schwarze 1389: enum roff_tok t;
1.109 kristaps 1390: enum rofferr e;
1.238 schwarze 1391: int pos; /* parse point */
1.243 schwarze 1392: int spos; /* saved parse point for messages */
1.238 schwarze 1393: int ppos; /* original offset in buf->buf */
1394: int ctl; /* macro line (boolean) */
1395:
1396: ppos = pos = *offs;
1.79 kristaps 1397:
1.230 schwarze 1398: /* Handle in-line equation delimiters. */
1399:
1.236 schwarze 1400: if (r->tbl == NULL &&
1401: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1402: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1403: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1404: if (e == ROFF_REPARSE)
1.277 schwarze 1405: return e;
1.230 schwarze 1406: assert(e == ROFF_CONT);
1407: }
1408:
1409: /* Expand some escape sequences. */
1.94 kristaps 1410:
1.238 schwarze 1411: e = roff_res(r, buf, ln, pos);
1412: if (e == ROFF_IGN)
1.277 schwarze 1413: return e;
1.238 schwarze 1414: assert(e == ROFF_CONT);
1.94 kristaps 1415:
1.238 schwarze 1416: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1417:
1.94 kristaps 1418: /*
1.79 kristaps 1419: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1420: * text through the macro's filter.
1421: * Equations process all content themselves.
1422: * Tables process almost all content themselves, but we want
1423: * to warn about macros before passing it there.
1.79 kristaps 1424: */
1.74 kristaps 1425:
1.252 schwarze 1426: if (r->last != NULL && ! ctl) {
1.78 kristaps 1427: t = r->last->tok;
1.238 schwarze 1428: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1429: if (e == ROFF_IGN)
1.277 schwarze 1430: return e;
1.294 schwarze 1431: assert(e == ROFF_CONT);
1.182 schwarze 1432: }
1.252 schwarze 1433: if (r->eqn != NULL)
1.277 schwarze 1434: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.252 schwarze 1435: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.277 schwarze 1436: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.252 schwarze 1437: if ( ! ctl)
1.277 schwarze 1438: return roff_parsetext(buf, pos, offs);
1.228 schwarze 1439:
1440: /* Skip empty request lines. */
1441:
1.238 schwarze 1442: if (buf->buf[pos] == '"') {
1.228 schwarze 1443: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1444: ln, pos, NULL);
1.277 schwarze 1445: return ROFF_IGN;
1.238 schwarze 1446: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1447: return ROFF_IGN;
1.67 kristaps 1448:
1.79 kristaps 1449: /*
1450: * If a scope is open, go to the child handler for that macro,
1451: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1452: * Don't do so if an equation is open.
1.79 kristaps 1453: */
1.78 kristaps 1454:
1.79 kristaps 1455: if (r->last) {
1456: t = r->last->tok;
1.277 schwarze 1457: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1458: }
1.78 kristaps 1459:
1.243 schwarze 1460: /* No scope is open. This is a new request or macro. */
1461:
1462: spos = pos;
1463: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1464:
1465: /* Tables ignore most macros. */
1466:
1.294 schwarze 1467: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS)) {
1.243 schwarze 1468: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1469: ln, pos, buf->buf + spos);
1.257 schwarze 1470: if (t == ROFF_TS)
1.277 schwarze 1471: return ROFF_IGN;
1.257 schwarze 1472: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1473: pos++;
1.291 schwarze 1474: while (buf->buf[pos] == ' ')
1.257 schwarze 1475: pos++;
1.277 schwarze 1476: return tbl_read(r->tbl, ln, buf->buf, pos);
1.243 schwarze 1477: }
1478:
1.79 kristaps 1479: /*
1.243 schwarze 1480: * This is neither a roff request nor a user-defined macro.
1481: * Let the standard macro set parsers handle it.
1.79 kristaps 1482: */
1.67 kristaps 1483:
1.294 schwarze 1484: if (t == TOKEN_NONE)
1.277 schwarze 1485: return ROFF_CONT;
1.243 schwarze 1486:
1487: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1488:
1.296 schwarze 1489: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1490: }
1491:
1.117 kristaps 1492: void
1.74 kristaps 1493: roff_endparse(struct roff *r)
1494: {
1495:
1.110 kristaps 1496: if (r->last)
1.221 schwarze 1497: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1498: r->last->line, r->last->col,
1.295 schwarze 1499: roff_name[r->last->tok]);
1.117 kristaps 1500:
1.125 kristaps 1501: if (r->eqn) {
1.221 schwarze 1502: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1503: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.151 kristaps 1504: eqn_end(&r->eqn);
1.125 kristaps 1505: }
1506:
1.117 kristaps 1507: if (r->tbl) {
1.221 schwarze 1508: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1509: r->tbl->line, r->tbl->pos, "TS");
1.151 kristaps 1510: tbl_end(&r->tbl);
1.117 kristaps 1511: }
1.67 kristaps 1512: }
1513:
1514: /*
1515: * Parse a roff node's type from the input buffer. This must be in the
1516: * form of ".foo xxx" in the usual way.
1517: */
1.294 schwarze 1518: static enum roff_tok
1.214 schwarze 1519: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1520: {
1.214 schwarze 1521: char *cp;
1.106 kristaps 1522: const char *mac;
1523: size_t maclen;
1.294 schwarze 1524: enum roff_tok t;
1.67 kristaps 1525:
1.214 schwarze 1526: cp = buf + *pos;
1527:
1528: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1529: return TOKEN_NONE;
1.67 kristaps 1530:
1.214 schwarze 1531: mac = cp;
1532: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1533:
1.106 kristaps 1534: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.295 schwarze 1535: ? ROFF_USERDEF : roffhash_find(r->reqtab, mac, maclen);
1.67 kristaps 1536:
1.294 schwarze 1537: if (t != TOKEN_NONE)
1.214 schwarze 1538: *pos = cp - buf;
1.67 kristaps 1539:
1.277 schwarze 1540: return t;
1.67 kristaps 1541: }
1542:
1.266 schwarze 1543: /* --- handling of request blocks ----------------------------------------- */
1544:
1.67 kristaps 1545: static enum rofferr
1.76 kristaps 1546: roff_cblock(ROFF_ARGS)
1.67 kristaps 1547: {
1548:
1.79 kristaps 1549: /*
1550: * A block-close `..' should only be invoked as a child of an
1551: * ignore macro, otherwise raise a warning and just ignore it.
1552: */
1553:
1.238 schwarze 1554: if (r->last == NULL) {
1.221 schwarze 1555: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1556: ln, ppos, "..");
1.277 schwarze 1557: return ROFF_IGN;
1.76 kristaps 1558: }
1.67 kristaps 1559:
1.81 kristaps 1560: switch (r->last->tok) {
1.207 schwarze 1561: case ROFF_am:
1.220 schwarze 1562: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1563: case ROFF_ami:
1564: case ROFF_de:
1.108 schwarze 1565: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1566: case ROFF_dei:
1567: case ROFF_ig:
1.81 kristaps 1568: break;
1569: default:
1.221 schwarze 1570: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1571: ln, ppos, "..");
1.277 schwarze 1572: return ROFF_IGN;
1.76 kristaps 1573: }
1.67 kristaps 1574:
1.238 schwarze 1575: if (buf->buf[pos] != '\0')
1.217 schwarze 1576: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1577: ".. %s", buf->buf + pos);
1.71 kristaps 1578:
1579: roffnode_pop(r);
1.76 kristaps 1580: roffnode_cleanscope(r);
1.277 schwarze 1581: return ROFF_IGN;
1.71 kristaps 1582:
1.67 kristaps 1583: }
1584:
1.76 kristaps 1585: static void
1586: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1587: {
1588:
1.76 kristaps 1589: while (r->last) {
1.173 schwarze 1590: if (--r->last->endspan != 0)
1.76 kristaps 1591: break;
1592: roffnode_pop(r);
1593: }
1.67 kristaps 1594: }
1595:
1.195 schwarze 1596: static void
1597: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1598: {
1599:
1.76 kristaps 1600: if (NULL == r->last) {
1.221 schwarze 1601: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1602: ln, ppos, "\\}");
1.195 schwarze 1603: return;
1.76 kristaps 1604: }
1605:
1.82 kristaps 1606: switch (r->last->tok) {
1.207 schwarze 1607: case ROFF_el:
1608: case ROFF_ie:
1609: case ROFF_if:
1.82 kristaps 1610: break;
1611: default:
1.221 schwarze 1612: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1613: ln, ppos, "\\}");
1.195 schwarze 1614: return;
1.75 kristaps 1615: }
1616:
1.76 kristaps 1617: if (r->last->endspan > -1) {
1.221 schwarze 1618: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1619: ln, ppos, "\\}");
1.195 schwarze 1620: return;
1.76 kristaps 1621: }
1622:
1.75 kristaps 1623: roffnode_pop(r);
1.76 kristaps 1624: roffnode_cleanscope(r);
1.195 schwarze 1625: return;
1.76 kristaps 1626: }
1627:
1628: static enum rofferr
1.80 kristaps 1629: roff_block(ROFF_ARGS)
1.76 kristaps 1630: {
1.220 schwarze 1631: const char *name;
1632: char *iname, *cp;
1.213 schwarze 1633: size_t namesz;
1.106 kristaps 1634:
1.220 schwarze 1635: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1636:
1.238 schwarze 1637: if (tok == ROFF_de1)
1.220 schwarze 1638: tok = ROFF_de;
1.251 schwarze 1639: else if (tok == ROFF_dei1)
1640: tok = ROFF_dei;
1.238 schwarze 1641: else if (tok == ROFF_am1)
1.220 schwarze 1642: tok = ROFF_am;
1.251 schwarze 1643: else if (tok == ROFF_ami1)
1644: tok = ROFF_ami;
1.220 schwarze 1645:
1646: /* Parse the macro name argument. */
1647:
1.238 schwarze 1648: cp = buf->buf + pos;
1649: if (tok == ROFF_ig) {
1.220 schwarze 1650: iname = NULL;
1651: namesz = 0;
1652: } else {
1653: iname = cp;
1654: namesz = roff_getname(r, &cp, ln, ppos);
1655: iname[namesz] = '\0';
1656: }
1.107 kristaps 1657:
1.220 schwarze 1658: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1659:
1.238 schwarze 1660: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1661: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1662: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1663: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1664: "%.*s", (int)namesz, iname);
1665: namesz = 0;
1666: } else
1667: namesz = strlen(name);
1668: } else
1669: name = iname;
1.107 kristaps 1670:
1.238 schwarze 1671: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1672: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1673: ln, ppos, roff_name[tok]);
1.277 schwarze 1674: return ROFF_IGN;
1.220 schwarze 1675: }
1.80 kristaps 1676:
1.106 kristaps 1677: roffnode_push(r, tok, name, ln, ppos);
1678:
1679: /*
1680: * At the beginning of a `de' macro, clear the existing string
1681: * with the same name, if there is one. New content will be
1.193 schwarze 1682: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1683: */
1.107 kristaps 1684:
1.238 schwarze 1685: if (tok == ROFF_de || tok == ROFF_dei)
1.213 schwarze 1686: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.76 kristaps 1687:
1.238 schwarze 1688: if (*cp == '\0')
1.277 schwarze 1689: return ROFF_IGN;
1.78 kristaps 1690:
1.220 schwarze 1691: /* Get the custom end marker. */
1.107 kristaps 1692:
1.220 schwarze 1693: iname = cp;
1.213 schwarze 1694: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1695:
1696: /* Resolve the end marker if it is indirect. */
1697:
1.238 schwarze 1698: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1699: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1700: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1701: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1702: "%.*s", (int)namesz, iname);
1703: namesz = 0;
1704: } else
1705: namesz = strlen(name);
1706: } else
1707: name = iname;
1708:
1.213 schwarze 1709: if (namesz)
1710: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1711:
1.238 schwarze 1712: if (*cp != '\0')
1.217 schwarze 1713: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 1714: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 1715:
1.277 schwarze 1716: return ROFF_IGN;
1.78 kristaps 1717: }
1718:
1719: static enum rofferr
1.80 kristaps 1720: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1721: {
1.294 schwarze 1722: enum roff_tok t;
1.79 kristaps 1723: int i, j;
1724:
1725: /*
1726: * First check whether a custom macro exists at this level. If
1727: * it does, then check against it. This is some of groff's
1728: * stranger behaviours. If we encountered a custom end-scope
1729: * tag and that tag also happens to be a "real" macro, then we
1730: * need to try interpreting it again as a real macro. If it's
1731: * not, then return ignore. Else continue.
1732: */
1733:
1734: if (r->last->end) {
1.130 kristaps 1735: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1736: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1737: break;
1738:
1.238 schwarze 1739: if (r->last->end[j] == '\0' &&
1740: (buf->buf[i] == '\0' ||
1741: buf->buf[i] == ' ' ||
1742: buf->buf[i] == '\t')) {
1.79 kristaps 1743: roffnode_pop(r);
1744: roffnode_cleanscope(r);
1745:
1.238 schwarze 1746: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1747: i++;
1748:
1749: pos = i;
1.238 schwarze 1750: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 1751: TOKEN_NONE)
1.277 schwarze 1752: return ROFF_RERUN;
1753: return ROFF_IGN;
1.79 kristaps 1754: }
1755: }
1756:
1757: /*
1758: * If we have no custom end-query or lookup failed, then try
1759: * pulling it out of the hashtable.
1760: */
1761:
1.238 schwarze 1762: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1763:
1.238 schwarze 1764: if (t != ROFF_cblock) {
1765: if (tok != ROFF_ig)
1766: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1767: return ROFF_IGN;
1.106 kristaps 1768: }
1.79 kristaps 1769:
1.277 schwarze 1770: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1771: }
1772:
1773: static enum rofferr
1.80 kristaps 1774: roff_block_text(ROFF_ARGS)
1.78 kristaps 1775: {
1776:
1.238 schwarze 1777: if (tok != ROFF_ig)
1778: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1779:
1.277 schwarze 1780: return ROFF_IGN;
1.78 kristaps 1781: }
1782:
1783: static enum rofferr
1.82 kristaps 1784: roff_cond_sub(ROFF_ARGS)
1785: {
1.294 schwarze 1786: enum roff_tok t;
1.139 kristaps 1787: char *ep;
1.198 schwarze 1788: int rr;
1.82 kristaps 1789:
1790: rr = r->last->rule;
1.139 kristaps 1791: roffnode_cleanscope(r);
1.238 schwarze 1792: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.82 kristaps 1793:
1.139 kristaps 1794: /*
1.177 schwarze 1795: * Fully handle known macros when they are structurally
1796: * required or when the conditional evaluated to true.
1.87 kristaps 1797: */
1798:
1.294 schwarze 1799: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.277 schwarze 1800: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.144 kristaps 1801:
1.196 schwarze 1802: /*
1803: * If `\}' occurs on a macro line without a preceding macro,
1804: * drop the line completely.
1805: */
1806:
1.238 schwarze 1807: ep = buf->buf + pos;
1808: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1809: rr = 0;
1.196 schwarze 1810:
1.177 schwarze 1811: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1812:
1.238 schwarze 1813: while ((ep = strchr(ep, '\\')) != NULL) {
1814: if (*(++ep) == '}') {
1.197 schwarze 1815: *ep = '&';
1.238 schwarze 1816: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1817: }
1.247 schwarze 1818: if (*ep != '\0')
1819: ++ep;
1.177 schwarze 1820: }
1.277 schwarze 1821: return rr ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 1822: }
1823:
1824: static enum rofferr
1825: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1826: {
1.140 kristaps 1827: char *ep;
1.198 schwarze 1828: int rr;
1.82 kristaps 1829:
1830: rr = r->last->rule;
1.140 kristaps 1831: roffnode_cleanscope(r);
1.82 kristaps 1832:
1.238 schwarze 1833: ep = buf->buf + pos;
1834: while ((ep = strchr(ep, '\\')) != NULL) {
1835: if (*(++ep) == '}') {
1.197 schwarze 1836: *ep = '&';
1.238 schwarze 1837: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1838: }
1.247 schwarze 1839: if (*ep != '\0')
1840: ++ep;
1.78 kristaps 1841: }
1.277 schwarze 1842: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 1843: }
1844:
1.266 schwarze 1845: /* --- handling of numeric and conditional expressions -------------------- */
1846:
1.204 schwarze 1847: /*
1848: * Parse a single signed integer number. Stop at the first non-digit.
1849: * If there is at least one digit, return success and advance the
1850: * parse point, else return failure and let the parse point unchanged.
1851: * Ignore overflows, treat them just like the C language.
1852: */
1.184 schwarze 1853: static int
1.261 schwarze 1854: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 1855: {
1.261 schwarze 1856: int myres, scaled, n, p;
1.206 schwarze 1857:
1858: if (NULL == res)
1859: res = &myres;
1.184 schwarze 1860:
1861: p = *pos;
1862: n = v[p] == '-';
1.261 schwarze 1863: if (n || v[p] == '+')
1.184 schwarze 1864: p++;
1865:
1.261 schwarze 1866: if (flags & ROFFNUM_WHITE)
1867: while (isspace((unsigned char)v[p]))
1868: p++;
1869:
1.184 schwarze 1870: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 1871: *res = 10 * *res + v[p] - '0';
1.184 schwarze 1872: if (p == *pos + n)
1873: return 0;
1874:
1875: if (n)
1876: *res = -*res;
1877:
1.254 schwarze 1878: /* Each number may be followed by one optional scaling unit. */
1879:
1880: switch (v[p]) {
1881: case 'f':
1.261 schwarze 1882: scaled = *res * 65536;
1.254 schwarze 1883: break;
1884: case 'i':
1.261 schwarze 1885: scaled = *res * 240;
1.254 schwarze 1886: break;
1887: case 'c':
1.261 schwarze 1888: scaled = *res * 240 / 2.54;
1.254 schwarze 1889: break;
1890: case 'v':
1891: case 'P':
1.261 schwarze 1892: scaled = *res * 40;
1.254 schwarze 1893: break;
1894: case 'm':
1895: case 'n':
1.261 schwarze 1896: scaled = *res * 24;
1.254 schwarze 1897: break;
1898: case 'p':
1.261 schwarze 1899: scaled = *res * 10 / 3;
1.254 schwarze 1900: break;
1901: case 'u':
1.261 schwarze 1902: scaled = *res;
1.254 schwarze 1903: break;
1904: case 'M':
1.261 schwarze 1905: scaled = *res * 6 / 25;
1.254 schwarze 1906: break;
1907: default:
1.261 schwarze 1908: scaled = *res;
1.254 schwarze 1909: p--;
1910: break;
1911: }
1.261 schwarze 1912: if (flags & ROFFNUM_SCALE)
1913: *res = scaled;
1.254 schwarze 1914:
1915: *pos = p + 1;
1.277 schwarze 1916: return 1;
1.184 schwarze 1917: }
1918:
1.198 schwarze 1919: /*
1920: * Evaluate a string comparison condition.
1921: * The first character is the delimiter.
1922: * Succeed if the string up to its second occurrence
1923: * matches the string up to its third occurence.
1924: * Advance the cursor after the third occurrence
1925: * or lacking that, to the end of the line.
1926: */
1927: static int
1928: roff_evalstrcond(const char *v, int *pos)
1929: {
1930: const char *s1, *s2, *s3;
1931: int match;
1932:
1933: match = 0;
1934: s1 = v + *pos; /* initial delimiter */
1935: s2 = s1 + 1; /* for scanning the first string */
1936: s3 = strchr(s2, *s1); /* for scanning the second string */
1937:
1938: if (NULL == s3) /* found no middle delimiter */
1939: goto out;
1940:
1941: while ('\0' != *++s3) {
1942: if (*s2 != *s3) { /* mismatch */
1943: s3 = strchr(s3, *s1);
1944: break;
1945: }
1946: if (*s3 == *s1) { /* found the final delimiter */
1947: match = 1;
1948: break;
1949: }
1950: s2++;
1951: }
1952:
1953: out:
1954: if (NULL == s3)
1955: s3 = strchr(s2, '\0');
1.242 schwarze 1956: else if (*s3 != '\0')
1.198 schwarze 1957: s3++;
1958: *pos = s3 - v;
1.277 schwarze 1959: return match;
1.198 schwarze 1960: }
1961:
1.204 schwarze 1962: /*
1963: * Evaluate an optionally negated single character, numerical,
1964: * or string condition.
1965: */
1.198 schwarze 1966: static int
1.271 schwarze 1967: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 1968: {
1.271 schwarze 1969: char *cp, *name;
1970: size_t sz;
1.241 schwarze 1971: int number, savepos, wanttrue;
1.88 kristaps 1972:
1.198 schwarze 1973: if ('!' == v[*pos]) {
1974: wanttrue = 0;
1975: (*pos)++;
1976: } else
1977: wanttrue = 1;
1978:
1.88 kristaps 1979: switch (v[*pos]) {
1.240 schwarze 1980: case '\0':
1.277 schwarze 1981: return 0;
1.207 schwarze 1982: case 'n':
1983: case 'o':
1.88 kristaps 1984: (*pos)++;
1.277 schwarze 1985: return wanttrue;
1.207 schwarze 1986: case 'c':
1987: case 'd':
1988: case 'e':
1989: case 't':
1.239 schwarze 1990: case 'v':
1.88 kristaps 1991: (*pos)++;
1.277 schwarze 1992: return !wanttrue;
1.271 schwarze 1993: case 'r':
1994: cp = name = v + ++*pos;
1995: sz = roff_getname(r, &cp, ln, *pos);
1996: *pos = cp - v;
1.277 schwarze 1997: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.88 kristaps 1998: default:
1999: break;
2000: }
2001:
1.241 schwarze 2002: savepos = *pos;
1.261 schwarze 2003: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2004: return (number > 0) == wanttrue;
1.241 schwarze 2005: else if (*pos == savepos)
1.277 schwarze 2006: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2007: else
1.277 schwarze 2008: return 0;
1.88 kristaps 2009: }
2010:
1.74 kristaps 2011: static enum rofferr
1.103 kristaps 2012: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2013: {
1.123 schwarze 2014:
1.277 schwarze 2015: return ROFF_IGN;
1.89 kristaps 2016: }
2017:
1.104 kristaps 2018: static enum rofferr
1.251 schwarze 2019: roff_insec(ROFF_ARGS)
2020: {
2021:
2022: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2023: ln, ppos, roff_name[tok]);
1.277 schwarze 2024: return ROFF_IGN;
1.251 schwarze 2025: }
2026:
2027: static enum rofferr
2028: roff_unsupp(ROFF_ARGS)
2029: {
2030:
2031: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2032: ln, ppos, roff_name[tok]);
1.277 schwarze 2033: return ROFF_IGN;
1.251 schwarze 2034: }
2035:
2036: static enum rofferr
1.82 kristaps 2037: roff_cond(ROFF_ARGS)
1.74 kristaps 2038: {
1.173 schwarze 2039:
2040: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2041:
1.207 schwarze 2042: /*
1.134 kristaps 2043: * An `.el' has no conditional body: it will consume the value
2044: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2045: * defaults to DENY.
1.134 kristaps 2046: *
2047: * If we're not an `el', however, then evaluate the conditional.
2048: */
1.133 kristaps 2049:
1.238 schwarze 2050: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2051: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2052: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2053:
1.134 kristaps 2054: /*
2055: * An if-else will put the NEGATION of the current evaluated
2056: * conditional into the stack of rules.
2057: */
2058:
1.238 schwarze 2059: if (tok == ROFF_ie) {
1.223 schwarze 2060: if (r->rstackpos + 1 == r->rstacksz) {
2061: r->rstacksz += 16;
2062: r->rstack = mandoc_reallocarray(r->rstack,
2063: r->rstacksz, sizeof(int));
1.134 kristaps 2064: }
1.198 schwarze 2065: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2066: }
1.88 kristaps 2067:
2068: /* If the parent has false as its rule, then so do we. */
2069:
1.198 schwarze 2070: if (r->last->parent && !r->last->parent->rule)
2071: r->last->rule = 0;
1.88 kristaps 2072:
2073: /*
1.173 schwarze 2074: * Determine scope.
2075: * If there is nothing on the line after the conditional,
2076: * not even whitespace, use next-line scope.
1.88 kristaps 2077: */
1.74 kristaps 2078:
1.238 schwarze 2079: if (buf->buf[pos] == '\0') {
1.173 schwarze 2080: r->last->endspan = 2;
2081: goto out;
2082: }
2083:
1.238 schwarze 2084: while (buf->buf[pos] == ' ')
1.173 schwarze 2085: pos++;
2086:
2087: /* An opening brace requests multiline scope. */
1.75 kristaps 2088:
1.238 schwarze 2089: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2090: r->last->endspan = -1;
2091: pos += 2;
1.272 schwarze 2092: while (buf->buf[pos] == ' ')
2093: pos++;
1.173 schwarze 2094: goto out;
1.207 schwarze 2095: }
1.74 kristaps 2096:
1.77 kristaps 2097: /*
1.173 schwarze 2098: * Anything else following the conditional causes
2099: * single-line scope. Warn if the scope contains
2100: * nothing but trailing whitespace.
1.77 kristaps 2101: */
2102:
1.238 schwarze 2103: if (buf->buf[pos] == '\0')
1.216 schwarze 2104: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2105: ln, ppos, roff_name[tok]);
1.77 kristaps 2106:
1.173 schwarze 2107: r->last->endspan = 1;
1.74 kristaps 2108:
1.173 schwarze 2109: out:
1.75 kristaps 2110: *offs = pos;
1.277 schwarze 2111: return ROFF_RERUN;
1.83 schwarze 2112: }
2113:
2114: static enum rofferr
1.92 schwarze 2115: roff_ds(ROFF_ARGS)
2116: {
1.212 schwarze 2117: char *string;
2118: const char *name;
2119: size_t namesz;
1.96 kristaps 2120:
1.251 schwarze 2121: /* Ignore groff compatibility mode for now. */
2122:
2123: if (tok == ROFF_ds1)
2124: tok = ROFF_ds;
2125: else if (tok == ROFF_as1)
2126: tok = ROFF_as;
2127:
1.96 kristaps 2128: /*
1.212 schwarze 2129: * The first word is the name of the string.
2130: * If it is empty or terminated by an escape sequence,
2131: * abort the `ds' request without defining anything.
1.96 kristaps 2132: */
1.92 schwarze 2133:
1.238 schwarze 2134: name = string = buf->buf + pos;
2135: if (*name == '\0')
1.277 schwarze 2136: return ROFF_IGN;
1.92 schwarze 2137:
1.212 schwarze 2138: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2139: if (name[namesz] == '\\')
1.277 schwarze 2140: return ROFF_IGN;
1.212 schwarze 2141:
2142: /* Read past the initial double-quote, if any. */
1.238 schwarze 2143: if (*string == '"')
1.92 schwarze 2144: string++;
2145:
1.96 kristaps 2146: /* The rest is the value. */
1.212 schwarze 2147: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2148: ROFF_as == tok);
1.277 schwarze 2149: return ROFF_IGN;
1.92 schwarze 2150: }
2151:
1.204 schwarze 2152: /*
2153: * Parse a single operator, one or two characters long.
2154: * If the operator is recognized, return success and advance the
2155: * parse point, else return failure and let the parse point unchanged.
2156: */
2157: static int
2158: roff_getop(const char *v, int *pos, char *res)
2159: {
2160:
2161: *res = v[*pos];
2162:
2163: switch (*res) {
1.207 schwarze 2164: case '+':
2165: case '-':
2166: case '*':
2167: case '/':
2168: case '%':
2169: case '&':
2170: case ':':
1.204 schwarze 2171: break;
2172: case '<':
2173: switch (v[*pos + 1]) {
1.207 schwarze 2174: case '=':
1.204 schwarze 2175: *res = 'l';
2176: (*pos)++;
2177: break;
1.207 schwarze 2178: case '>':
1.204 schwarze 2179: *res = '!';
2180: (*pos)++;
2181: break;
1.207 schwarze 2182: case '?':
1.204 schwarze 2183: *res = 'i';
2184: (*pos)++;
2185: break;
2186: default:
2187: break;
2188: }
2189: break;
2190: case '>':
2191: switch (v[*pos + 1]) {
1.207 schwarze 2192: case '=':
1.204 schwarze 2193: *res = 'g';
2194: (*pos)++;
2195: break;
1.207 schwarze 2196: case '?':
1.204 schwarze 2197: *res = 'a';
2198: (*pos)++;
2199: break;
2200: default:
2201: break;
2202: }
2203: break;
2204: case '=':
2205: if ('=' == v[*pos + 1])
2206: (*pos)++;
2207: break;
2208: default:
1.277 schwarze 2209: return 0;
1.204 schwarze 2210: }
2211: (*pos)++;
2212:
1.277 schwarze 2213: return *res;
1.204 schwarze 2214: }
2215:
2216: /*
2217: * Evaluate either a parenthesized numeric expression
2218: * or a single signed integer number.
2219: */
2220: static int
1.235 schwarze 2221: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2222: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2223: {
2224:
2225: if ('(' != v[*pos])
1.277 schwarze 2226: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2227:
2228: (*pos)++;
1.261 schwarze 2229: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2230: return 0;
1.204 schwarze 2231:
1.206 schwarze 2232: /*
2233: * Omission of the closing parenthesis
2234: * is an error in validation mode,
2235: * but ignored in evaluation mode.
2236: */
2237:
1.204 schwarze 2238: if (')' == v[*pos])
2239: (*pos)++;
1.206 schwarze 2240: else if (NULL == res)
1.277 schwarze 2241: return 0;
1.204 schwarze 2242:
1.277 schwarze 2243: return 1;
1.204 schwarze 2244: }
2245:
2246: /*
2247: * Evaluate a complete numeric expression.
2248: * Proceed left to right, there is no concept of precedence.
2249: */
2250: static int
1.235 schwarze 2251: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2252: int *pos, int *res, int flags)
1.204 schwarze 2253: {
2254: int mypos, operand2;
2255: char operator;
2256:
2257: if (NULL == pos) {
2258: mypos = 0;
2259: pos = &mypos;
2260: }
2261:
1.261 schwarze 2262: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2263: while (isspace((unsigned char)v[*pos]))
2264: (*pos)++;
2265:
1.261 schwarze 2266: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2267: return 0;
1.204 schwarze 2268:
2269: while (1) {
1.261 schwarze 2270: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2271: while (isspace((unsigned char)v[*pos]))
2272: (*pos)++;
2273:
2274: if ( ! roff_getop(v, pos, &operator))
2275: break;
2276:
1.261 schwarze 2277: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2278: while (isspace((unsigned char)v[*pos]))
2279: (*pos)++;
2280:
1.261 schwarze 2281: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2282: return 0;
1.204 schwarze 2283:
1.261 schwarze 2284: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2285: while (isspace((unsigned char)v[*pos]))
2286: (*pos)++;
1.206 schwarze 2287:
2288: if (NULL == res)
2289: continue;
1.204 schwarze 2290:
2291: switch (operator) {
1.207 schwarze 2292: case '+':
1.204 schwarze 2293: *res += operand2;
2294: break;
1.207 schwarze 2295: case '-':
1.204 schwarze 2296: *res -= operand2;
2297: break;
1.207 schwarze 2298: case '*':
1.204 schwarze 2299: *res *= operand2;
2300: break;
1.207 schwarze 2301: case '/':
1.244 schwarze 2302: if (operand2 == 0) {
1.235 schwarze 2303: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2304: r->parse, ln, *pos, v);
2305: *res = 0;
2306: break;
2307: }
1.204 schwarze 2308: *res /= operand2;
2309: break;
1.207 schwarze 2310: case '%':
1.244 schwarze 2311: if (operand2 == 0) {
2312: mandoc_msg(MANDOCERR_DIVZERO,
2313: r->parse, ln, *pos, v);
2314: *res = 0;
2315: break;
2316: }
1.204 schwarze 2317: *res %= operand2;
2318: break;
1.207 schwarze 2319: case '<':
1.204 schwarze 2320: *res = *res < operand2;
2321: break;
1.207 schwarze 2322: case '>':
1.204 schwarze 2323: *res = *res > operand2;
2324: break;
1.207 schwarze 2325: case 'l':
1.204 schwarze 2326: *res = *res <= operand2;
2327: break;
1.207 schwarze 2328: case 'g':
1.204 schwarze 2329: *res = *res >= operand2;
2330: break;
1.207 schwarze 2331: case '=':
1.204 schwarze 2332: *res = *res == operand2;
2333: break;
1.207 schwarze 2334: case '!':
1.204 schwarze 2335: *res = *res != operand2;
2336: break;
1.207 schwarze 2337: case '&':
1.204 schwarze 2338: *res = *res && operand2;
2339: break;
1.207 schwarze 2340: case ':':
1.204 schwarze 2341: *res = *res || operand2;
2342: break;
1.207 schwarze 2343: case 'i':
1.204 schwarze 2344: if (operand2 < *res)
2345: *res = operand2;
2346: break;
1.207 schwarze 2347: case 'a':
1.204 schwarze 2348: if (operand2 > *res)
2349: *res = operand2;
2350: break;
2351: default:
2352: abort();
2353: }
2354: }
1.277 schwarze 2355: return 1;
1.204 schwarze 2356: }
2357:
1.266 schwarze 2358: /* --- register management ------------------------------------------------ */
2359:
1.180 schwarze 2360: void
1.187 schwarze 2361: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2362: {
1.180 schwarze 2363: struct roffreg *reg;
2364:
2365: /* Search for an existing register with the same name. */
2366: reg = r->regtab;
2367:
2368: while (reg && strcmp(name, reg->key.p))
2369: reg = reg->next;
1.147 kristaps 2370:
1.180 schwarze 2371: if (NULL == reg) {
2372: /* Create a new register. */
2373: reg = mandoc_malloc(sizeof(struct roffreg));
2374: reg->key.p = mandoc_strdup(name);
2375: reg->key.sz = strlen(name);
1.187 schwarze 2376: reg->val = 0;
1.180 schwarze 2377: reg->next = r->regtab;
2378: r->regtab = reg;
2379: }
2380:
1.187 schwarze 2381: if ('+' == sign)
2382: reg->val += val;
2383: else if ('-' == sign)
2384: reg->val -= val;
2385: else
2386: reg->val = val;
1.147 kristaps 2387: }
2388:
1.192 schwarze 2389: /*
2390: * Handle some predefined read-only number registers.
2391: * For now, return -1 if the requested register is not predefined;
2392: * in case a predefined read-only register having the value -1
2393: * were to turn up, another special value would have to be chosen.
2394: */
2395: static int
1.273 schwarze 2396: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2397: {
2398:
2399: switch (*name) {
1.273 schwarze 2400: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2401: return r->argc;
1.207 schwarze 2402: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2403: return 0;
1.207 schwarze 2404: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2405: return 1;
1.207 schwarze 2406: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2407: return 24;
1.207 schwarze 2408: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2409: return 0;
1.207 schwarze 2410: case 'T': /* Some output device is always defined. */
1.277 schwarze 2411: return 1;
1.207 schwarze 2412: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2413: return 40;
1.192 schwarze 2414: default:
1.277 schwarze 2415: return -1;
1.192 schwarze 2416: }
2417: }
2418:
1.181 schwarze 2419: int
1.180 schwarze 2420: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2421: {
1.180 schwarze 2422: struct roffreg *reg;
1.192 schwarze 2423: int val;
2424:
2425: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2426: val = roff_getregro(r, name + 1);
1.192 schwarze 2427: if (-1 != val)
1.277 schwarze 2428: return val;
1.192 schwarze 2429: }
1.180 schwarze 2430:
2431: for (reg = r->regtab; reg; reg = reg->next)
2432: if (0 == strcmp(name, reg->key.p))
1.277 schwarze 2433: return reg->val;
1.181 schwarze 2434:
1.277 schwarze 2435: return 0;
1.181 schwarze 2436: }
2437:
2438: static int
2439: roff_getregn(const struct roff *r, const char *name, size_t len)
2440: {
2441: struct roffreg *reg;
1.192 schwarze 2442: int val;
2443:
2444: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2445: val = roff_getregro(r, name + 1);
1.192 schwarze 2446: if (-1 != val)
1.277 schwarze 2447: return val;
1.192 schwarze 2448: }
1.181 schwarze 2449:
2450: for (reg = r->regtab; reg; reg = reg->next)
2451: if (len == reg->key.sz &&
2452: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2453: return reg->val;
1.271 schwarze 2454:
1.277 schwarze 2455: return 0;
1.271 schwarze 2456: }
2457:
2458: static int
2459: roff_hasregn(const struct roff *r, const char *name, size_t len)
2460: {
2461: struct roffreg *reg;
2462: int val;
2463:
2464: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2465: val = roff_getregro(r, name + 1);
1.271 schwarze 2466: if (-1 != val)
1.277 schwarze 2467: return 1;
1.271 schwarze 2468: }
2469:
2470: for (reg = r->regtab; reg; reg = reg->next)
2471: if (len == reg->key.sz &&
2472: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2473: return 1;
1.147 kristaps 2474:
1.277 schwarze 2475: return 0;
1.147 kristaps 2476: }
2477:
1.180 schwarze 2478: static void
2479: roff_freereg(struct roffreg *reg)
1.147 kristaps 2480: {
1.180 schwarze 2481: struct roffreg *old_reg;
1.147 kristaps 2482:
1.180 schwarze 2483: while (NULL != reg) {
2484: free(reg->key.p);
2485: old_reg = reg;
2486: reg = reg->next;
2487: free(old_reg);
2488: }
1.147 kristaps 2489: }
1.92 schwarze 2490:
2491: static enum rofferr
1.89 kristaps 2492: roff_nr(ROFF_ARGS)
1.83 schwarze 2493: {
1.212 schwarze 2494: char *key, *val;
2495: size_t keysz;
1.138 kristaps 2496: int iv;
1.187 schwarze 2497: char sign;
1.89 kristaps 2498:
1.238 schwarze 2499: key = val = buf->buf + pos;
2500: if (*key == '\0')
1.277 schwarze 2501: return ROFF_IGN;
1.212 schwarze 2502:
2503: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2504: if (key[keysz] == '\\')
1.277 schwarze 2505: return ROFF_IGN;
1.212 schwarze 2506: key[keysz] = '\0';
1.89 kristaps 2507:
1.187 schwarze 2508: sign = *val;
1.238 schwarze 2509: if (sign == '+' || sign == '-')
1.187 schwarze 2510: val++;
2511:
1.261 schwarze 2512: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2513: roff_setreg(r, key, iv, sign);
1.109 kristaps 2514:
1.277 schwarze 2515: return ROFF_IGN;
1.203 schwarze 2516: }
2517:
2518: static enum rofferr
2519: roff_rr(ROFF_ARGS)
2520: {
2521: struct roffreg *reg, **prev;
1.212 schwarze 2522: char *name, *cp;
2523: size_t namesz;
1.203 schwarze 2524:
1.238 schwarze 2525: name = cp = buf->buf + pos;
2526: if (*name == '\0')
1.277 schwarze 2527: return ROFF_IGN;
1.212 schwarze 2528: namesz = roff_getname(r, &cp, ln, pos);
2529: name[namesz] = '\0';
1.203 schwarze 2530:
2531: prev = &r->regtab;
2532: while (1) {
2533: reg = *prev;
1.238 schwarze 2534: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2535: break;
2536: prev = ®->next;
2537: }
1.238 schwarze 2538: if (reg != NULL) {
1.203 schwarze 2539: *prev = reg->next;
2540: free(reg->key.p);
2541: free(reg);
2542: }
1.277 schwarze 2543: return ROFF_IGN;
1.122 schwarze 2544: }
2545:
1.266 schwarze 2546: /* --- handler functions for roff requests -------------------------------- */
2547:
1.122 schwarze 2548: static enum rofferr
2549: roff_rm(ROFF_ARGS)
2550: {
2551: const char *name;
2552: char *cp;
1.212 schwarze 2553: size_t namesz;
1.122 schwarze 2554:
1.238 schwarze 2555: cp = buf->buf + pos;
2556: while (*cp != '\0') {
1.212 schwarze 2557: name = cp;
1.238 schwarze 2558: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2559: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.238 schwarze 2560: if (name[namesz] == '\\')
1.212 schwarze 2561: break;
1.122 schwarze 2562: }
1.277 schwarze 2563: return ROFF_IGN;
1.178 schwarze 2564: }
2565:
2566: static enum rofferr
2567: roff_it(ROFF_ARGS)
2568: {
2569: int iv;
2570:
2571: /* Parse the number of lines. */
1.261 schwarze 2572:
2573: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2574: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2575: ln, ppos, buf->buf + 1);
1.277 schwarze 2576: return ROFF_IGN;
1.178 schwarze 2577: }
2578:
1.262 schwarze 2579: while (isspace((unsigned char)buf->buf[pos]))
2580: pos++;
2581:
2582: /*
2583: * Arm the input line trap.
2584: * Special-casing "an-trap" is an ugly workaround to cope
2585: * with DocBook stupidly fiddling with man(7) internals.
2586: */
1.261 schwarze 2587:
1.178 schwarze 2588: roffit_lines = iv;
1.262 schwarze 2589: roffit_macro = mandoc_strdup(iv != 1 ||
2590: strcmp(buf->buf + pos, "an-trap") ?
2591: buf->buf + pos : "br");
1.277 schwarze 2592: return ROFF_IGN;
1.175 schwarze 2593: }
2594:
2595: static enum rofferr
2596: roff_Dd(ROFF_ARGS)
2597: {
2598: const char *const *cp;
2599:
1.227 schwarze 2600: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.175 schwarze 2601: for (cp = __mdoc_reserved; *cp; cp++)
2602: roff_setstr(r, *cp, NULL, 0);
2603:
1.227 schwarze 2604: if (r->format == 0)
2605: r->format = MPARSE_MDOC;
2606:
1.277 schwarze 2607: return ROFF_CONT;
1.175 schwarze 2608: }
2609:
2610: static enum rofferr
2611: roff_TH(ROFF_ARGS)
2612: {
2613: const char *const *cp;
2614:
1.227 schwarze 2615: if ((r->options & MPARSE_QUICK) == 0)
1.175 schwarze 2616: for (cp = __man_reserved; *cp; cp++)
2617: roff_setstr(r, *cp, NULL, 0);
2618:
1.227 schwarze 2619: if (r->format == 0)
2620: r->format = MPARSE_MAN;
2621:
1.277 schwarze 2622: return ROFF_CONT;
1.109 kristaps 2623: }
2624:
2625: static enum rofferr
2626: roff_TE(ROFF_ARGS)
2627: {
2628:
2629: if (NULL == r->tbl)
1.221 schwarze 2630: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2631: ln, ppos, "TE");
1.258 schwarze 2632: else if ( ! tbl_end(&r->tbl)) {
2633: free(buf->buf);
2634: buf->buf = mandoc_strdup(".sp");
2635: buf->sz = 4;
1.277 schwarze 2636: return ROFF_REPARSE;
1.258 schwarze 2637: }
1.277 schwarze 2638: return ROFF_IGN;
1.112 kristaps 2639: }
2640:
2641: static enum rofferr
2642: roff_T_(ROFF_ARGS)
2643: {
2644:
2645: if (NULL == r->tbl)
1.221 schwarze 2646: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2647: ln, ppos, "T&");
1.112 kristaps 2648: else
1.296 schwarze 2649: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 2650:
1.277 schwarze 2651: return ROFF_IGN;
1.109 kristaps 2652: }
2653:
1.230 schwarze 2654: /*
2655: * Handle in-line equation delimiters.
2656: */
2657: static enum rofferr
1.238 schwarze 2658: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2659: {
1.233 schwarze 2660: char *cp1, *cp2;
2661: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2662:
1.230 schwarze 2663: /*
2664: * Outside equations, look for an opening delimiter.
2665: * If we are inside an equation, we already know it is
2666: * in-line, or this function wouldn't have been called;
2667: * so look for a closing delimiter.
2668: */
2669:
1.238 schwarze 2670: cp1 = buf->buf + pos;
1.230 schwarze 2671: cp2 = strchr(cp1, r->eqn == NULL ?
2672: r->last_eqn->odelim : r->last_eqn->cdelim);
2673: if (cp2 == NULL)
1.277 schwarze 2674: return ROFF_CONT;
1.230 schwarze 2675:
1.233 schwarze 2676: *cp2++ = '\0';
2677: bef_pr = bef_nl = aft_nl = aft_pr = "";
2678:
2679: /* Handle preceding text, protecting whitespace. */
2680:
1.238 schwarze 2681: if (*buf->buf != '\0') {
1.233 schwarze 2682: if (r->eqn == NULL)
2683: bef_pr = "\\&";
2684: bef_nl = "\n";
2685: }
2686:
2687: /*
2688: * Prepare replacing the delimiter with an equation macro
2689: * and drop leading white space from the equation.
2690: */
1.230 schwarze 2691:
1.233 schwarze 2692: if (r->eqn == NULL) {
2693: while (*cp2 == ' ')
2694: cp2++;
2695: mac = ".EQ";
2696: } else
2697: mac = ".EN";
2698:
2699: /* Handle following text, protecting whitespace. */
2700:
2701: if (*cp2 != '\0') {
2702: aft_nl = "\n";
2703: if (r->eqn != NULL)
2704: aft_pr = "\\&";
2705: }
2706:
2707: /* Do the actual replacement. */
2708:
1.238 schwarze 2709: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2710: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2711: free(buf->buf);
2712: buf->buf = cp1;
1.230 schwarze 2713:
2714: /* Toggle the in-line state of the eqn subsystem. */
2715:
2716: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2717: return ROFF_REPARSE;
1.151 kristaps 2718: }
2719:
1.235 schwarze 2720: static enum rofferr
2721: roff_EQ(ROFF_ARGS)
1.125 kristaps 2722: {
1.151 kristaps 2723: struct eqn_node *e;
1.125 kristaps 2724:
1.238 schwarze 2725: assert(r->eqn == NULL);
1.235 schwarze 2726: e = eqn_alloc(ppos, ln, r->parse);
1.125 kristaps 2727:
1.230 schwarze 2728: if (r->last_eqn) {
1.125 kristaps 2729: r->last_eqn->next = e;
1.230 schwarze 2730: e->delim = r->last_eqn->delim;
2731: e->odelim = r->last_eqn->odelim;
2732: e->cdelim = r->last_eqn->cdelim;
2733: } else
1.125 kristaps 2734: r->first_eqn = r->last_eqn = e;
2735:
2736: r->eqn = r->last_eqn = e;
1.151 kristaps 2737:
1.238 schwarze 2738: if (buf->buf[pos] != '\0')
1.235 schwarze 2739: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2740: ".EQ %s", buf->buf + pos);
1.151 kristaps 2741:
1.277 schwarze 2742: return ROFF_IGN;
1.125 kristaps 2743: }
2744:
2745: static enum rofferr
2746: roff_EN(ROFF_ARGS)
2747: {
2748:
1.221 schwarze 2749: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.277 schwarze 2750: return ROFF_IGN;
1.125 kristaps 2751: }
2752:
2753: static enum rofferr
1.109 kristaps 2754: roff_TS(ROFF_ARGS)
2755: {
1.176 schwarze 2756: struct tbl_node *tbl;
1.89 kristaps 2757:
1.115 kristaps 2758: if (r->tbl) {
1.221 schwarze 2759: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2760: ln, ppos, "TS breaks TS");
1.151 kristaps 2761: tbl_end(&r->tbl);
1.115 kristaps 2762: }
1.83 schwarze 2763:
1.176 schwarze 2764: tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2765:
2766: if (r->last_tbl)
1.176 schwarze 2767: r->last_tbl->next = tbl;
1.113 kristaps 2768: else
1.176 schwarze 2769: r->first_tbl = r->last_tbl = tbl;
1.113 kristaps 2770:
1.176 schwarze 2771: r->tbl = r->last_tbl = tbl;
1.297 schwarze 2772: return ROFF_IGN;
2773: }
2774:
2775: static enum rofferr
2776: roff_onearg(ROFF_ARGS)
2777: {
2778: struct roff_node *n;
2779: char *cp;
2780:
2781: roff_elem_alloc(r->man, ln, ppos, tok);
2782: n = r->man->last;
2783:
2784: cp = buf->buf + pos;
2785: if (*cp != '\0') {
2786: while (*cp != '\0' && *cp != ' ')
2787: cp++;
2788: while (*cp == ' ')
2789: *cp++ = '\0';
2790: if (*cp != '\0')
2791: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2792: r->parse, ln, cp - buf->buf,
2793: "%s ... %s", roff_name[tok], cp);
2794: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 ! schwarze 2795: }
! 2796:
! 2797: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
! 2798: r->man->last = n;
! 2799: r->man->next = ROFF_NEXT_SIBLING;
! 2800: return ROFF_IGN;
! 2801: }
! 2802:
! 2803: static enum rofferr
! 2804: roff_manyarg(ROFF_ARGS)
! 2805: {
! 2806: struct roff_node *n;
! 2807: char *sp, *ep;
! 2808:
! 2809: roff_elem_alloc(r->man, ln, ppos, tok);
! 2810: n = r->man->last;
! 2811:
! 2812: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
! 2813: while (*ep != '\0' && *ep != ' ')
! 2814: ep++;
! 2815: while (*ep == ' ')
! 2816: *ep++ = '\0';
! 2817: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 2818: }
2819:
2820: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2821: r->man->last = n;
2822: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 2823: return ROFF_IGN;
1.251 schwarze 2824: }
2825:
2826: static enum rofferr
1.296 schwarze 2827: roff_br(ROFF_ARGS)
1.251 schwarze 2828: {
1.296 schwarze 2829: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
2830: if (buf->buf[pos] != '\0')
2831: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2832: "%s %s", roff_name[tok], buf->buf + pos);
2833: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2834: r->man->next = ROFF_NEXT_SIBLING;
2835: return ROFF_IGN;
1.92 schwarze 2836: }
2837:
1.105 kristaps 2838: static enum rofferr
1.174 kristaps 2839: roff_cc(ROFF_ARGS)
2840: {
2841: const char *p;
2842:
1.238 schwarze 2843: p = buf->buf + pos;
1.174 kristaps 2844:
1.238 schwarze 2845: if (*p == '\0' || (r->control = *p++) == '.')
1.174 kristaps 2846: r->control = 0;
2847:
1.238 schwarze 2848: if (*p != '\0')
1.260 schwarze 2849: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2850: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 2851:
1.277 schwarze 2852: return ROFF_IGN;
1.174 kristaps 2853: }
2854:
2855: static enum rofferr
1.164 kristaps 2856: roff_tr(ROFF_ARGS)
2857: {
2858: const char *p, *first, *second;
2859: size_t fsz, ssz;
2860: enum mandoc_esc esc;
2861:
1.238 schwarze 2862: p = buf->buf + pos;
1.164 kristaps 2863:
1.238 schwarze 2864: if (*p == '\0') {
1.260 schwarze 2865: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 2866: return ROFF_IGN;
1.164 kristaps 2867: }
2868:
1.238 schwarze 2869: while (*p != '\0') {
1.164 kristaps 2870: fsz = ssz = 1;
2871:
2872: first = p++;
1.238 schwarze 2873: if (*first == '\\') {
1.164 kristaps 2874: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2875: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2876: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2877: ln, (int)(p - buf->buf), first);
1.277 schwarze 2878: return ROFF_IGN;
1.164 kristaps 2879: }
2880: fsz = (size_t)(p - first);
2881: }
2882:
2883: second = p++;
1.238 schwarze 2884: if (*second == '\\') {
1.164 kristaps 2885: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2886: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2887: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2888: ln, (int)(p - buf->buf), second);
1.277 schwarze 2889: return ROFF_IGN;
1.164 kristaps 2890: }
2891: ssz = (size_t)(p - second);
1.238 schwarze 2892: } else if (*second == '\0') {
1.260 schwarze 2893: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2894: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 2895: second = " ";
1.165 kristaps 2896: p--;
1.164 kristaps 2897: }
2898:
1.167 kristaps 2899: if (fsz > 1) {
1.207 schwarze 2900: roff_setstrn(&r->xmbtab, first, fsz,
2901: second, ssz, 0);
1.167 kristaps 2902: continue;
2903: }
2904:
1.238 schwarze 2905: if (r->xtab == NULL)
1.207 schwarze 2906: r->xtab = mandoc_calloc(128,
2907: sizeof(struct roffstr));
1.167 kristaps 2908:
2909: free(r->xtab[(int)*first].p);
2910: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
2911: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 2912: }
2913:
1.277 schwarze 2914: return ROFF_IGN;
1.164 kristaps 2915: }
2916:
2917: static enum rofferr
1.105 kristaps 2918: roff_so(ROFF_ARGS)
2919: {
1.249 schwarze 2920: char *name, *cp;
1.105 kristaps 2921:
1.238 schwarze 2922: name = buf->buf + pos;
1.224 schwarze 2923: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 2924:
2925: /*
2926: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
2927: * opening anything that's not in our cwd or anything beneath
2928: * it. Thus, explicitly disallow traversing up the file-system
2929: * or using absolute paths.
2930: */
2931:
1.238 schwarze 2932: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 2933: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
2934: ".so %s", name);
1.249 schwarze 2935: buf->sz = mandoc_asprintf(&cp,
2936: ".sp\nSee the file %s.\n.sp", name) + 1;
2937: free(buf->buf);
2938: buf->buf = cp;
2939: *offs = 0;
1.277 schwarze 2940: return ROFF_REPARSE;
1.105 kristaps 2941: }
2942:
2943: *offs = pos;
1.277 schwarze 2944: return ROFF_SO;
1.105 kristaps 2945: }
1.92 schwarze 2946:
1.266 schwarze 2947: /* --- user defined strings and macros ------------------------------------ */
2948:
1.106 kristaps 2949: static enum rofferr
2950: roff_userdef(ROFF_ARGS)
1.99 kristaps 2951: {
1.263 schwarze 2952: const char *arg[9], *ap;
1.106 kristaps 2953: char *cp, *n1, *n2;
1.292 schwarze 2954: int expand_count, i, ib, ie;
1.263 schwarze 2955: size_t asz, rsz;
1.106 kristaps 2956:
2957: /*
2958: * Collect pointers to macro argument strings
1.188 schwarze 2959: * and NUL-terminate them.
1.106 kristaps 2960: */
1.263 schwarze 2961:
1.273 schwarze 2962: r->argc = 0;
1.238 schwarze 2963: cp = buf->buf + pos;
1.273 schwarze 2964: for (i = 0; i < 9; i++) {
2965: if (*cp == '\0')
2966: arg[i] = "";
2967: else {
2968: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
2969: r->argc = i + 1;
2970: }
2971: }
1.99 kristaps 2972:
1.106 kristaps 2973: /*
2974: * Expand macro arguments.
1.99 kristaps 2975: */
1.263 schwarze 2976:
2977: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 2978: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 2979: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 2980: expand_count = 0;
1.263 schwarze 2981: while (*cp != '\0') {
2982:
2983: /* Scan ahead for the next argument invocation. */
2984:
2985: if (*cp++ != '\\')
2986: continue;
2987: if (*cp++ != '$')
2988: continue;
1.274 schwarze 2989: if (*cp == '*') { /* \\$* inserts all arguments */
2990: ib = 0;
2991: ie = r->argc - 1;
2992: } else { /* \\$1 .. \\$9 insert one argument */
2993: ib = ie = *cp - '1';
2994: if (ib < 0 || ib > 8)
2995: continue;
2996: }
1.263 schwarze 2997: cp -= 2;
1.292 schwarze 2998:
2999: /*
3000: * Prevent infinite recursion.
3001: */
3002:
3003: if (cp >= n2)
3004: expand_count = 1;
3005: else if (++expand_count > EXPAND_LIMIT) {
3006: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3007: ln, (int)(cp - n1), NULL);
1.293 schwarze 3008: free(buf->buf);
3009: buf->buf = n1;
1.292 schwarze 3010: return ROFF_IGN;
3011: }
1.263 schwarze 3012:
3013: /*
3014: * Determine the size of the expanded argument,
3015: * taking escaping of quotes into account.
3016: */
3017:
1.274 schwarze 3018: asz = ie > ib ? ie - ib : 0; /* for blanks */
3019: for (i = ib; i <= ie; i++) {
3020: for (ap = arg[i]; *ap != '\0'; ap++) {
3021: asz++;
3022: if (*ap == '"')
3023: asz += 3;
3024: }
1.263 schwarze 3025: }
3026: if (asz != 3) {
3027:
3028: /*
3029: * Determine the size of the rest of the
3030: * unexpanded macro, including the NUL.
3031: */
3032:
3033: rsz = buf->sz - (cp - n1) - 3;
3034:
3035: /*
3036: * When shrinking, move before
3037: * releasing the storage.
3038: */
3039:
3040: if (asz < 3)
3041: memmove(cp + asz, cp + 3, rsz);
3042:
3043: /*
3044: * Resize the storage for the macro
3045: * and readjust the parse pointer.
3046: */
3047:
3048: buf->sz += asz - 3;
3049: n2 = mandoc_realloc(n1, buf->sz);
3050: cp = n2 + (cp - n1);
3051: n1 = n2;
3052:
3053: /*
3054: * When growing, make room
3055: * for the expanded argument.
3056: */
3057:
3058: if (asz > 3)
3059: memmove(cp + asz, cp + 3, rsz);
3060: }
3061:
3062: /* Copy the expanded argument, escaping quotes. */
3063:
3064: n2 = cp;
1.274 schwarze 3065: for (i = ib; i <= ie; i++) {
3066: for (ap = arg[i]; *ap != '\0'; ap++) {
3067: if (*ap == '"') {
3068: memcpy(n2, "\\(dq", 4);
3069: n2 += 4;
3070: } else
3071: *n2++ = *ap;
3072: }
3073: if (i < ie)
3074: *n2++ = ' ';
1.106 kristaps 3075: }
1.99 kristaps 3076: }
3077:
1.106 kristaps 3078: /*
3079: * Replace the macro invocation
3080: * by the expanded macro.
3081: */
1.263 schwarze 3082:
1.238 schwarze 3083: free(buf->buf);
3084: buf->buf = n1;
1.248 schwarze 3085: *offs = 0;
1.106 kristaps 3086:
1.277 schwarze 3087: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3088: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3089: }
1.121 schwarze 3090:
1.212 schwarze 3091: static size_t
1.121 schwarze 3092: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3093: {
3094: char *name, *cp;
1.212 schwarze 3095: size_t namesz;
1.121 schwarze 3096:
3097: name = *cpp;
3098: if ('\0' == *name)
1.277 schwarze 3099: return 0;
1.121 schwarze 3100:
1.212 schwarze 3101: /* Read until end of name and terminate it with NUL. */
3102: for (cp = name; 1; cp++) {
3103: if ('\0' == *cp || ' ' == *cp) {
3104: namesz = cp - name;
3105: break;
3106: }
1.121 schwarze 3107: if ('\\' != *cp)
3108: continue;
1.215 schwarze 3109: namesz = cp - name;
3110: if ('{' == cp[1] || '}' == cp[1])
3111: break;
1.121 schwarze 3112: cp++;
3113: if ('\\' == *cp)
3114: continue;
1.224 schwarze 3115: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3116: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3117: mandoc_escape((const char **)&cp, NULL, NULL);
3118: break;
1.121 schwarze 3119: }
3120:
3121: /* Read past spaces. */
3122: while (' ' == *cp)
3123: cp++;
3124:
3125: *cpp = cp;
1.277 schwarze 3126: return namesz;
1.121 schwarze 3127: }
3128:
1.106 kristaps 3129: /*
3130: * Store *string into the user-defined string called *name.
3131: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3132: * append == 0: replace mode
3133: * append == 1: single-line append mode
3134: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3135: */
1.94 kristaps 3136: static void
1.106 kristaps 3137: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3138: int append)
1.92 schwarze 3139: {
1.164 kristaps 3140:
3141: roff_setstrn(&r->strtab, name, strlen(name), string,
1.207 schwarze 3142: string ? strlen(string) : 0, append);
1.164 kristaps 3143: }
3144:
3145: static void
1.166 kristaps 3146: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3147: const char *string, size_t stringsz, int append)
1.164 kristaps 3148: {
1.166 kristaps 3149: struct roffkv *n;
1.164 kristaps 3150: char *c;
3151: int i;
3152: size_t oldch, newch;
1.92 schwarze 3153:
1.106 kristaps 3154: /* Search for an existing string with the same name. */
1.164 kristaps 3155: n = *r;
3156:
1.211 schwarze 3157: while (n && (namesz != n->key.sz ||
3158: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3159: n = n->next;
1.94 kristaps 3160:
3161: if (NULL == n) {
1.106 kristaps 3162: /* Create a new string table entry. */
1.166 kristaps 3163: n = mandoc_malloc(sizeof(struct roffkv));
3164: n->key.p = mandoc_strndup(name, namesz);
3165: n->key.sz = namesz;
3166: n->val.p = NULL;
3167: n->val.sz = 0;
1.164 kristaps 3168: n->next = *r;
3169: *r = n;
1.193 schwarze 3170: } else if (0 == append) {
1.166 kristaps 3171: free(n->val.p);
3172: n->val.p = NULL;
3173: n->val.sz = 0;
1.106 kristaps 3174: }
3175:
3176: if (NULL == string)
3177: return;
3178:
3179: /*
3180: * One additional byte for the '\n' in multiline mode,
3181: * and one for the terminating '\0'.
3182: */
1.193 schwarze 3183: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3184:
1.166 kristaps 3185: if (NULL == n->val.p) {
3186: n->val.p = mandoc_malloc(newch);
3187: *n->val.p = '\0';
1.106 kristaps 3188: oldch = 0;
3189: } else {
1.166 kristaps 3190: oldch = n->val.sz;
3191: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3192: }
3193:
3194: /* Skip existing content in the destination buffer. */
1.166 kristaps 3195: c = n->val.p + (int)oldch;
1.106 kristaps 3196:
3197: /* Append new content to the destination buffer. */
1.164 kristaps 3198: i = 0;
3199: while (i < (int)stringsz) {
1.106 kristaps 3200: /*
3201: * Rudimentary roff copy mode:
3202: * Handle escaped backslashes.
3203: */
1.164 kristaps 3204: if ('\\' == string[i] && '\\' == string[i + 1])
3205: i++;
3206: *c++ = string[i++];
1.106 kristaps 3207: }
1.94 kristaps 3208:
1.106 kristaps 3209: /* Append terminating bytes. */
1.193 schwarze 3210: if (1 < append)
1.106 kristaps 3211: *c++ = '\n';
1.163 kristaps 3212:
1.106 kristaps 3213: *c = '\0';
1.166 kristaps 3214: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3215: }
3216:
1.94 kristaps 3217: static const char *
3218: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.92 schwarze 3219: {
1.166 kristaps 3220: const struct roffkv *n;
1.191 schwarze 3221: int i;
1.92 schwarze 3222:
1.164 kristaps 3223: for (n = r->strtab; n; n = n->next)
1.207 schwarze 3224: if (0 == strncmp(name, n->key.p, len) &&
3225: '\0' == n->key.p[(int)len])
1.277 schwarze 3226: return n->val.p;
1.191 schwarze 3227:
3228: for (i = 0; i < PREDEFS_MAX; i++)
3229: if (0 == strncmp(name, predefs[i].name, len) &&
3230: '\0' == predefs[i].name[(int)len])
1.277 schwarze 3231: return predefs[i].str;
1.94 kristaps 3232:
1.277 schwarze 3233: return NULL;
1.92 schwarze 3234: }
3235:
1.94 kristaps 3236: static void
1.167 kristaps 3237: roff_freestr(struct roffkv *r)
1.92 schwarze 3238: {
1.166 kristaps 3239: struct roffkv *n, *nn;
1.92 schwarze 3240:
1.167 kristaps 3241: for (n = r; n; n = nn) {
1.166 kristaps 3242: free(n->key.p);
3243: free(n->val.p);
1.92 schwarze 3244: nn = n->next;
3245: free(n);
3246: }
1.114 kristaps 3247: }
1.266 schwarze 3248:
3249: /* --- accessors and utility functions ------------------------------------ */
1.114 kristaps 3250:
3251: const struct tbl_span *
3252: roff_span(const struct roff *r)
3253: {
1.207 schwarze 3254:
1.277 schwarze 3255: return r->tbl ? tbl_span(r->tbl) : NULL;
1.125 kristaps 3256: }
3257:
3258: const struct eqn *
3259: roff_eqn(const struct roff *r)
3260: {
1.207 schwarze 3261:
1.277 schwarze 3262: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.164 kristaps 3263: }
3264:
3265: /*
3266: * Duplicate an input string, making the appropriate character
3267: * conversations (as stipulated by `tr') along the way.
3268: * Returns a heap-allocated string with all the replacements made.
3269: */
3270: char *
3271: roff_strdup(const struct roff *r, const char *p)
3272: {
1.166 kristaps 3273: const struct roffkv *cp;
1.164 kristaps 3274: char *res;
3275: const char *pp;
3276: size_t ssz, sz;
3277: enum mandoc_esc esc;
3278:
1.167 kristaps 3279: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3280: return mandoc_strdup(p);
1.164 kristaps 3281: else if ('\0' == *p)
1.277 schwarze 3282: return mandoc_strdup("");
1.164 kristaps 3283:
3284: /*
3285: * Step through each character looking for term matches
3286: * (remember that a `tr' can be invoked with an escape, which is
3287: * a glyph but the escape is multi-character).
3288: * We only do this if the character hash has been initialised
3289: * and the string is >0 length.
3290: */
3291:
3292: res = NULL;
3293: ssz = 0;
3294:
3295: while ('\0' != *p) {
1.289 schwarze 3296: assert((unsigned int)*p < 128);
3297: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3298: sz = r->xtab[(int)*p].sz;
3299: res = mandoc_realloc(res, ssz + sz + 1);
3300: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3301: ssz += sz;
3302: p++;
3303: continue;
3304: } else if ('\\' != *p) {
3305: res = mandoc_realloc(res, ssz + 2);
3306: res[ssz++] = *p++;
3307: continue;
3308: }
3309:
1.164 kristaps 3310: /* Search for term matches. */
1.167 kristaps 3311: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3312: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3313: break;
3314:
3315: if (NULL != cp) {
3316: /*
3317: * A match has been found.
3318: * Append the match to the array and move
3319: * forward by its keysize.
3320: */
1.207 schwarze 3321: res = mandoc_realloc(res,
3322: ssz + cp->val.sz + 1);
1.166 kristaps 3323: memcpy(res + ssz, cp->val.p, cp->val.sz);
3324: ssz += cp->val.sz;
3325: p += (int)cp->key.sz;
1.164 kristaps 3326: continue;
3327: }
3328:
1.167 kristaps 3329: /*
3330: * Handle escapes carefully: we need to copy
3331: * over just the escape itself, or else we might
3332: * do replacements within the escape itself.
3333: * Make sure to pass along the bogus string.
3334: */
3335: pp = p++;
3336: esc = mandoc_escape(&p, NULL, NULL);
3337: if (ESCAPE_ERROR == esc) {
3338: sz = strlen(pp);
1.164 kristaps 3339: res = mandoc_realloc(res, ssz + sz + 1);
3340: memcpy(res + ssz, pp, sz);
1.167 kristaps 3341: break;
1.164 kristaps 3342: }
1.207 schwarze 3343: /*
3344: * We bail out on bad escapes.
1.167 kristaps 3345: * No need to warn: we already did so when
3346: * roff_res() was called.
3347: */
3348: sz = (int)(p - pp);
3349: res = mandoc_realloc(res, ssz + sz + 1);
3350: memcpy(res + ssz, pp, sz);
3351: ssz += sz;
1.164 kristaps 3352: }
3353:
3354: res[(int)ssz] = '\0';
1.277 schwarze 3355: return res;
1.227 schwarze 3356: }
3357:
3358: int
3359: roff_getformat(const struct roff *r)
3360: {
3361:
1.277 schwarze 3362: return r->format;
1.174 kristaps 3363: }
3364:
3365: /*
1.207 schwarze 3366: * Find out whether a line is a macro line or not.
1.174 kristaps 3367: * If it is, adjust the current position and return one; if it isn't,
3368: * return zero and don't change the current position.
3369: * If the control character has been set with `.cc', then let that grain
3370: * precedence.
3371: * This is slighly contrary to groff, where using the non-breaking
3372: * control character when `cc' has been invoked will cause the
3373: * non-breaking macro contents to be printed verbatim.
3374: */
3375: int
3376: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3377: {
3378: int pos;
3379:
3380: pos = *ppos;
3381:
3382: if (0 != r->control && cp[pos] == r->control)
3383: pos++;
3384: else if (0 != r->control)
1.277 schwarze 3385: return 0;
1.174 kristaps 3386: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3387: pos += 2;
3388: else if ('.' == cp[pos] || '\'' == cp[pos])
3389: pos++;
3390: else
1.277 schwarze 3391: return 0;
1.174 kristaps 3392:
3393: while (' ' == cp[pos] || '\t' == cp[pos])
3394: pos++;
3395:
3396: *ppos = pos;
1.277 schwarze 3397: return 1;
1.74 kristaps 3398: }
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