Annotation of mandoc/roff.c, Revision 1.296
1.296 ! schwarze 1: /* $Id: roff.c,v 1.295 2017/04/29 12:45:42 schwarze Exp $ */
1.1 kristaps 2: /*
1.267 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.287 schwarze 4: * Copyright (c) 2010-2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.66 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.106 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.66 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.106 kristaps 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.66 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 17: */
1.66 kristaps 18: #include "config.h"
1.225 schwarze 19:
20: #include <sys/types.h>
1.30 kristaps 21:
1.67 kristaps 22: #include <assert.h>
1.85 kristaps 23: #include <ctype.h>
1.245 schwarze 24: #include <limits.h>
1.295 schwarze 25: #include <stddef.h>
26: #include <stdint.h>
1.178 schwarze 27: #include <stdio.h>
1.1 kristaps 28: #include <stdlib.h>
1.67 kristaps 29: #include <string.h>
1.1 kristaps 30:
1.67 kristaps 31: #include "mandoc.h"
1.201 schwarze 32: #include "mandoc_aux.h"
1.295 schwarze 33: #include "mandoc_ohash.h"
1.265 schwarze 34: #include "roff.h"
1.226 schwarze 35: #include "libmandoc.h"
1.266 schwarze 36: #include "roff_int.h"
1.109 kristaps 37: #include "libroff.h"
1.82 kristaps 38:
1.170 schwarze 39: /* Maximum number of string expansions per line, to break infinite loops. */
40: #define EXPAND_LIMIT 1000
41:
1.266 schwarze 42: /* --- data types --------------------------------------------------------- */
43:
1.147 kristaps 44: /*
1.167 kristaps 45: * An incredibly-simple string buffer.
46: */
1.94 kristaps 47: struct roffstr {
1.167 kristaps 48: char *p; /* nil-terminated buffer */
49: size_t sz; /* saved strlen(p) */
1.166 kristaps 50: };
51:
52: /*
1.167 kristaps 53: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 54: */
55: struct roffkv {
56: struct roffstr key;
57: struct roffstr val;
58: struct roffkv *next; /* next in list */
1.94 kristaps 59: };
60:
1.180 schwarze 61: /*
62: * A single number register as part of a singly-linked list.
63: */
64: struct roffreg {
65: struct roffstr key;
1.181 schwarze 66: int val;
1.180 schwarze 67: struct roffreg *next;
68: };
69:
1.295 schwarze 70: /*
71: * Association of request and macro names with token IDs.
72: */
73: struct roffreq {
74: enum roff_tok tok;
75: char name[];
76: };
77:
1.67 kristaps 78: struct roff {
1.128 kristaps 79: struct mparse *parse; /* parse point */
1.296 ! schwarze 80: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 81: struct roffnode *last; /* leaf of stack */
1.223 schwarze 82: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 83: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 84: struct roffreg *regtab; /* number registers */
1.166 kristaps 85: struct roffkv *strtab; /* user-defined strings & macros */
1.167 kristaps 86: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
87: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 88: const char *current_string; /* value of last called user macro */
1.118 kristaps 89: struct tbl_node *first_tbl; /* first table parsed */
90: struct tbl_node *last_tbl; /* last table parsed */
91: struct tbl_node *tbl; /* current table being parsed */
1.125 kristaps 92: struct eqn_node *last_eqn; /* last equation parsed */
93: struct eqn_node *first_eqn; /* first equation parsed */
94: struct eqn_node *eqn; /* current equation being parsed */
1.230 schwarze 95: int eqn_inline; /* current equation is inline */
1.223 schwarze 96: int options; /* parse options */
97: int rstacksz; /* current size limit of rstack */
98: int rstackpos; /* position in rstack */
1.227 schwarze 99: int format; /* current file in mdoc or man format */
1.273 schwarze 100: int argc; /* number of args of the last macro */
1.223 schwarze 101: char control; /* control character */
1.79 kristaps 102: };
103:
1.67 kristaps 104: struct roffnode {
1.294 schwarze 105: enum roff_tok tok; /* type of node */
1.67 kristaps 106: struct roffnode *parent; /* up one in stack */
107: int line; /* parse line */
108: int col; /* parse col */
1.106 kristaps 109: char *name; /* node name, e.g. macro name */
1.79 kristaps 110: char *end; /* end-rules: custom token */
111: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 112: int rule; /* current evaluation rule */
1.67 kristaps 113: };
114:
115: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 116: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 117: struct buf *buf, /* input buffer */ \
1.67 kristaps 118: int ln, /* parse line */ \
1.75 kristaps 119: int ppos, /* original pos in buffer */ \
120: int pos, /* current pos in buffer */ \
1.74 kristaps 121: int *offs /* reset offset of buffer data */
1.67 kristaps 122:
123: typedef enum rofferr (*roffproc)(ROFF_ARGS);
124:
125: struct roffmac {
1.79 kristaps 126: roffproc proc; /* process new macro */
127: roffproc text; /* process as child text of macro */
128: roffproc sub; /* process as child of macro */
129: int flags;
130: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 131: };
132:
1.141 kristaps 133: struct predef {
134: const char *name; /* predefined input name */
135: const char *str; /* replacement symbol */
136: };
137:
138: #define PREDEF(__name, __str) \
139: { (__name), (__str) },
140:
1.266 schwarze 141: /* --- function prototypes ------------------------------------------------ */
142:
1.155 kristaps 143: static void roffnode_cleanscope(struct roff *);
144: static void roffnode_pop(struct roff *);
1.294 schwarze 145: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 146: const char *, int, int);
1.80 kristaps 147: static enum rofferr roff_block(ROFF_ARGS);
148: static enum rofferr roff_block_text(ROFF_ARGS);
149: static enum rofferr roff_block_sub(ROFF_ARGS);
1.296 ! schwarze 150: static enum rofferr roff_br(ROFF_ARGS);
1.80 kristaps 151: static enum rofferr roff_cblock(ROFF_ARGS);
1.174 kristaps 152: static enum rofferr roff_cc(ROFF_ARGS);
1.195 schwarze 153: static void roff_ccond(struct roff *, int, int);
1.82 kristaps 154: static enum rofferr roff_cond(ROFF_ARGS);
155: static enum rofferr roff_cond_text(ROFF_ARGS);
156: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.92 schwarze 157: static enum rofferr roff_ds(ROFF_ARGS);
1.238 schwarze 158: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 159: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 160: static int roff_evalnum(struct roff *, int,
161: const char *, int *, int *, int);
162: static int roff_evalpar(struct roff *, int,
1.261 schwarze 163: const char *, int *, int *, int);
1.198 schwarze 164: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 165: static void roff_free1(struct roff *);
1.180 schwarze 166: static void roff_freereg(struct roffreg *);
1.167 kristaps 167: static void roff_freestr(struct roffkv *);
1.212 schwarze 168: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 169: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 170: static int roff_getop(const char *, int *, char *);
1.181 schwarze 171: static int roff_getregn(const struct roff *,
172: const char *, size_t);
1.273 schwarze 173: static int roff_getregro(const struct roff *,
174: const char *name);
1.207 schwarze 175: static const char *roff_getstrn(const struct roff *,
1.94 kristaps 176: const char *, size_t);
1.271 schwarze 177: static int roff_hasregn(const struct roff *,
178: const char *, size_t);
1.251 schwarze 179: static enum rofferr roff_insec(ROFF_ARGS);
1.178 schwarze 180: static enum rofferr roff_it(ROFF_ARGS);
1.103 kristaps 181: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.265 schwarze 182: static void roff_man_alloc1(struct roff_man *);
183: static void roff_man_free1(struct roff_man *);
1.89 kristaps 184: static enum rofferr roff_nr(ROFF_ARGS);
1.294 schwarze 185: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 186: int, int);
1.238 schwarze 187: static enum rofferr roff_parsetext(struct buf *, int, int *);
188: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.122 schwarze 189: static enum rofferr roff_rm(ROFF_ARGS);
1.203 schwarze 190: static enum rofferr roff_rr(ROFF_ARGS);
1.94 kristaps 191: static void roff_setstr(struct roff *,
1.106 kristaps 192: const char *, const char *, int);
1.207 schwarze 193: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 194: size_t, const char *, size_t, int);
1.105 kristaps 195: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 196: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 197: static enum rofferr roff_Dd(ROFF_ARGS);
198: static enum rofferr roff_TH(ROFF_ARGS);
1.109 kristaps 199: static enum rofferr roff_TE(ROFF_ARGS);
200: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 201: static enum rofferr roff_EQ(ROFF_ARGS);
202: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 203: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 204: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 205: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 206:
1.266 schwarze 207: /* --- constant data ------------------------------------------------------ */
208:
1.261 schwarze 209: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
210: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
211:
1.294 schwarze 212: const char *__roff_name[MAN_MAX + 1] = {
1.296 ! schwarze 213: "br", NULL,
1.294 schwarze 214: "ab", "ad", "af", "aln",
215: "als", "am", "am1", "ami",
216: "ami1", "as", "as1", "asciify",
217: "backtrace", "bd", "bleedat", "blm",
218: "box", "boxa", "bp", "BP",
219: "break", "breakchar", "brnl", "brp",
220: "brpnl", "c2", "cc", "ce",
221: "cf", "cflags", "ch", "char",
222: "chop", "class", "close", "CL",
223: "color", "composite", "continue", "cp",
224: "cropat", "cs", "cu", "da",
225: "dch", "Dd", "de", "de1",
226: "defcolor", "dei", "dei1", "device",
227: "devicem", "di", "do", "ds",
228: "ds1", "dwh", "dt", "ec",
229: "ecr", "ecs", "el", "em",
230: "EN", "eo", "EP", "EQ",
231: "errprint", "ev", "evc", "ex",
232: "fallback", "fam", "fc", "fchar",
233: "fcolor", "fdeferlig", "feature", "fkern",
234: "fl", "flig", "fp", "fps",
235: "fschar", "fspacewidth", "fspecial", "ftr",
236: "fzoom", "gcolor", "hc", "hcode",
237: "hidechar", "hla", "hlm", "hpf",
238: "hpfa", "hpfcode", "hw", "hy",
239: "hylang", "hylen", "hym", "hypp",
240: "hys", "ie", "if", "ig",
241: "index", "it", "itc", "IX",
242: "kern", "kernafter", "kernbefore", "kernpair",
243: "lc", "lc_ctype", "lds", "length",
244: "letadj", "lf", "lg", "lhang",
245: "linetabs", "lnr", "lnrf", "lpfx",
246: "ls", "lsm", "lt", "mc",
247: "mediasize", "minss", "mk", "mso",
248: "na", "ne", "nh", "nhychar",
249: "nm", "nn", "nop", "nr",
250: "nrf", "nroff", "ns", "nx",
251: "open", "opena", "os", "output",
252: "padj", "papersize", "pc", "pev",
253: "pi", "PI", "pl", "pm",
254: "pn", "pnr", "po", "ps",
255: "psbb", "pshape", "pso", "ptr",
256: "pvs", "rchar", "rd", "recursionlimit",
257: "return", "rfschar", "rhang", "rj",
258: "rm", "rn", "rnn", "rr",
259: "rs", "rt", "schar", "sentchar",
260: "shc", "shift", "sizes", "so",
261: "spacewidth", "special", "spreadwarn", "ss",
262: "sty", "substring", "sv", "sy",
263: "T&", "ta", "tc", "TE",
264: "TH", "ti", "tkf", "tl",
265: "tm", "tm1", "tmc", "tr",
266: "track", "transchar", "trf", "trimat",
267: "trin", "trnt", "troff", "TS",
268: "uf", "ul", "unformat", "unwatch",
269: "unwatchn", "vpt", "vs", "warn",
270: "warnscale", "watch", "watchlength", "watchn",
271: "wh", "while", "write", "writec",
272: "writem", "xflag", ".", NULL,
273: "text",
274: "Dd", "Dt", "Os", "Sh",
275: "Ss", "Pp", "D1", "Dl",
276: "Bd", "Ed", "Bl", "El",
277: "It", "Ad", "An", "Ap",
278: "Ar", "Cd", "Cm", "Dv",
279: "Er", "Ev", "Ex", "Fa",
280: "Fd", "Fl", "Fn", "Ft",
281: "Ic", "In", "Li", "Nd",
282: "Nm", "Op", "Ot", "Pa",
283: "Rv", "St", "Va", "Vt",
284: "Xr", "%A", "%B", "%D",
285: "%I", "%J", "%N", "%O",
286: "%P", "%R", "%T", "%V",
287: "Ac", "Ao", "Aq", "At",
288: "Bc", "Bf", "Bo", "Bq",
289: "Bsx", "Bx", "Db", "Dc",
290: "Do", "Dq", "Ec", "Ef",
291: "Em", "Eo", "Fx", "Ms",
292: "No", "Ns", "Nx", "Ox",
293: "Pc", "Pf", "Po", "Pq",
294: "Qc", "Ql", "Qo", "Qq",
295: "Re", "Rs", "Sc", "So",
296: "Sq", "Sm", "Sx", "Sy",
297: "Tn", "Ux", "Xc", "Xo",
298: "Fo", "Fc", "Oo", "Oc",
299: "Bk", "Ek", "Bt", "Hf",
300: "Fr", "Ud", "Lb", "Lp",
301: "Lk", "Mt", "Brq", "Bro",
302: "Brc", "%C", "Es", "En",
1.296 ! schwarze 303: "Dx", "%Q", "sp",
1.294 schwarze 304: "%U", "Ta", "ll", NULL,
305: "TH", "SH", "SS", "TP",
306: "LP", "PP", "P", "IP",
307: "HP", "SM", "SB", "BI",
308: "IB", "BR", "RB", "R",
309: "B", "I", "IR", "RI",
1.296 ! schwarze 310: "sp", "nf", "fi",
1.294 schwarze 311: "RE", "RS", "DT", "UC",
312: "PD", "AT", "in", "ft",
313: "OP", "EX", "EE", "UR",
314: "UE", "ll", NULL
315: };
316: const char *const *roff_name = __roff_name;
317:
318: static struct roffmac roffs[TOKEN_NONE] = {
1.296 ! schwarze 319: { roff_br, NULL, NULL, 0 }, /* br */
! 320: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 321: { roff_unsupp, NULL, NULL, 0 }, /* ab */
322: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
323: { roff_line_ignore, NULL, NULL, 0 }, /* af */
324: { roff_unsupp, NULL, NULL, 0 }, /* aln */
325: { roff_unsupp, NULL, NULL, 0 }, /* als */
326: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
327: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
328: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
329: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
330: { roff_ds, NULL, NULL, 0 }, /* as */
331: { roff_ds, NULL, NULL, 0 }, /* as1 */
332: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
333: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
334: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
335: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
336: { roff_unsupp, NULL, NULL, 0 }, /* blm */
337: { roff_unsupp, NULL, NULL, 0 }, /* box */
338: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
339: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
340: { roff_unsupp, NULL, NULL, 0 }, /* BP */
341: { roff_unsupp, NULL, NULL, 0 }, /* break */
342: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
343: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 ! schwarze 344: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 345: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
346: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
347: { roff_cc, NULL, NULL, 0 }, /* cc */
348: { roff_line_ignore, NULL, NULL, 0 }, /* ce */
349: { roff_insec, NULL, NULL, 0 }, /* cf */
350: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
351: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
352: { roff_unsupp, NULL, NULL, 0 }, /* char */
353: { roff_unsupp, NULL, NULL, 0 }, /* chop */
354: { roff_line_ignore, NULL, NULL, 0 }, /* class */
355: { roff_insec, NULL, NULL, 0 }, /* close */
356: { roff_unsupp, NULL, NULL, 0 }, /* CL */
357: { roff_line_ignore, NULL, NULL, 0 }, /* color */
358: { roff_unsupp, NULL, NULL, 0 }, /* composite */
359: { roff_unsupp, NULL, NULL, 0 }, /* continue */
360: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
361: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
362: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
363: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
364: { roff_unsupp, NULL, NULL, 0 }, /* da */
365: { roff_unsupp, NULL, NULL, 0 }, /* dch */
366: { roff_Dd, NULL, NULL, 0 }, /* Dd */
367: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
368: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
369: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
370: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
371: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
372: { roff_unsupp, NULL, NULL, 0 }, /* device */
373: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
374: { roff_unsupp, NULL, NULL, 0 }, /* di */
375: { roff_unsupp, NULL, NULL, 0 }, /* do */
376: { roff_ds, NULL, NULL, 0 }, /* ds */
377: { roff_ds, NULL, NULL, 0 }, /* ds1 */
378: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
379: { roff_unsupp, NULL, NULL, 0 }, /* dt */
380: { roff_unsupp, NULL, NULL, 0 }, /* ec */
381: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
382: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
383: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
384: { roff_unsupp, NULL, NULL, 0 }, /* em */
385: { roff_EN, NULL, NULL, 0 }, /* EN */
386: { roff_unsupp, NULL, NULL, 0 }, /* eo */
387: { roff_unsupp, NULL, NULL, 0 }, /* EP */
388: { roff_EQ, NULL, NULL, 0 }, /* EQ */
389: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
390: { roff_unsupp, NULL, NULL, 0 }, /* ev */
391: { roff_unsupp, NULL, NULL, 0 }, /* evc */
392: { roff_unsupp, NULL, NULL, 0 }, /* ex */
393: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
394: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
395: { roff_unsupp, NULL, NULL, 0 }, /* fc */
396: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
397: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
398: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
399: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
400: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
401: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
402: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
403: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
404: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
405: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
406: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
407: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
408: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
409: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
410: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
411: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
412: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
413: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
414: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
415: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
416: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
417: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
418: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
419: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
420: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
421: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
422: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
423: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
424: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
425: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
426: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
427: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
428: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
429: { roff_unsupp, NULL, NULL, 0 }, /* index */
430: { roff_it, NULL, NULL, 0 }, /* it */
431: { roff_unsupp, NULL, NULL, 0 }, /* itc */
432: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
433: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
434: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
435: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
436: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
437: { roff_unsupp, NULL, NULL, 0 }, /* lc */
438: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
439: { roff_unsupp, NULL, NULL, 0 }, /* lds */
440: { roff_unsupp, NULL, NULL, 0 }, /* length */
441: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
442: { roff_insec, NULL, NULL, 0 }, /* lf */
443: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
444: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
445: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
446: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
447: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
448: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
449: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
450: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
451: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
452: { roff_line_ignore, NULL, NULL, 0 }, /* mc */
453: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
454: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
455: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
456: { roff_insec, NULL, NULL, 0 }, /* mso */
457: { roff_line_ignore, NULL, NULL, 0 }, /* na */
458: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
459: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
460: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
461: { roff_unsupp, NULL, NULL, 0 }, /* nm */
462: { roff_unsupp, NULL, NULL, 0 }, /* nn */
463: { roff_unsupp, NULL, NULL, 0 }, /* nop */
464: { roff_nr, NULL, NULL, 0 }, /* nr */
465: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
466: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
467: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
468: { roff_insec, NULL, NULL, 0 }, /* nx */
469: { roff_insec, NULL, NULL, 0 }, /* open */
470: { roff_insec, NULL, NULL, 0 }, /* opena */
471: { roff_line_ignore, NULL, NULL, 0 }, /* os */
472: { roff_unsupp, NULL, NULL, 0 }, /* output */
473: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
474: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
475: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
476: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
477: { roff_insec, NULL, NULL, 0 }, /* pi */
478: { roff_unsupp, NULL, NULL, 0 }, /* PI */
479: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
480: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
481: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
482: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
483: { roff_line_ignore, NULL, NULL, 0 }, /* po */
484: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
485: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
486: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
487: { roff_insec, NULL, NULL, 0 }, /* pso */
488: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
489: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
490: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
491: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
492: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
493: { roff_unsupp, NULL, NULL, 0 }, /* return */
494: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
495: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
496: { roff_line_ignore, NULL, NULL, 0 }, /* rj */
497: { roff_rm, NULL, NULL, 0 }, /* rm */
498: { roff_unsupp, NULL, NULL, 0 }, /* rn */
499: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
500: { roff_rr, NULL, NULL, 0 }, /* rr */
501: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
502: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
503: { roff_unsupp, NULL, NULL, 0 }, /* schar */
504: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
505: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
506: { roff_unsupp, NULL, NULL, 0 }, /* shift */
507: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
508: { roff_so, NULL, NULL, 0 }, /* so */
509: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
510: { roff_line_ignore, NULL, NULL, 0 }, /* special */
511: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
512: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
513: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
514: { roff_unsupp, NULL, NULL, 0 }, /* substring */
515: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
516: { roff_insec, NULL, NULL, 0 }, /* sy */
517: { roff_T_, NULL, NULL, 0 }, /* T& */
518: { roff_unsupp, NULL, NULL, 0 }, /* ta */
519: { roff_unsupp, NULL, NULL, 0 }, /* tc */
520: { roff_TE, NULL, NULL, 0 }, /* TE */
521: { roff_TH, NULL, NULL, 0 }, /* TH */
522: { roff_unsupp, NULL, NULL, 0 }, /* ti */
523: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
524: { roff_unsupp, NULL, NULL, 0 }, /* tl */
525: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
526: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
527: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
528: { roff_tr, NULL, NULL, 0 }, /* tr */
529: { roff_line_ignore, NULL, NULL, 0 }, /* track */
530: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
531: { roff_insec, NULL, NULL, 0 }, /* trf */
532: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
533: { roff_unsupp, NULL, NULL, 0 }, /* trin */
534: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
535: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
536: { roff_TS, NULL, NULL, 0 }, /* TS */
537: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
538: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
539: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
540: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
541: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
542: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
543: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
544: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
545: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
546: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
547: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
548: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
549: { roff_unsupp, NULL, NULL, 0 }, /* wh */
550: { roff_unsupp, NULL, NULL, 0 }, /* while */
551: { roff_insec, NULL, NULL, 0 }, /* write */
552: { roff_insec, NULL, NULL, 0 }, /* writec */
553: { roff_insec, NULL, NULL, 0 }, /* writem */
554: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
555: { roff_cblock, NULL, NULL, 0 }, /* . */
556: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 557: };
558:
1.200 schwarze 559: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.175 schwarze 560: const char *const __mdoc_reserved[] = {
561: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
562: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
563: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
564: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.200 schwarze 565: "Dt", "Dv", "Dx", "D1",
566: "Ec", "Ed", "Ef", "Ek", "El", "Em",
567: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.175 schwarze 568: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.200 schwarze 569: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
570: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.175 schwarze 571: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.200 schwarze 572: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
573: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
574: "Sc", "Sh", "Sm", "So", "Sq",
1.175 schwarze 575: "Ss", "St", "Sx", "Sy",
576: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.200 schwarze 577: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.175 schwarze 578: "%P", "%Q", "%R", "%T", "%U", "%V",
579: NULL
580: };
581:
1.200 schwarze 582: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.175 schwarze 583: const char *const __man_reserved[] = {
1.200 schwarze 584: "AT", "B", "BI", "BR", "DT",
585: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
586: "LP", "OP", "P", "PD", "PP",
587: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
588: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.175 schwarze 589: NULL
590: };
591:
1.141 kristaps 592: /* Array of injected predefined strings. */
593: #define PREDEFS_MAX 38
594: static const struct predef predefs[PREDEFS_MAX] = {
595: #include "predefs.in"
596: };
597:
1.178 schwarze 598: static int roffit_lines; /* number of lines to delay */
599: static char *roffit_macro; /* nil-terminated macro line */
600:
1.207 schwarze 601:
1.266 schwarze 602: /* --- request table ------------------------------------------------------ */
603:
1.295 schwarze 604: struct ohash *
605: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 606: {
1.295 schwarze 607: struct ohash *htab;
608: struct roffreq *req;
609: enum roff_tok tok;
610: size_t sz;
611: unsigned int slot;
1.85 kristaps 612:
1.295 schwarze 613: htab = mandoc_malloc(sizeof(*htab));
614: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 615:
1.295 schwarze 616: for (tok = mintok; tok < maxtok; tok++) {
1.296 ! schwarze 617: if (roff_name[tok] == NULL)
! 618: continue;
1.295 schwarze 619: sz = strlen(roff_name[tok]);
620: req = mandoc_malloc(sizeof(*req) + sz + 1);
621: req->tok = tok;
622: memcpy(req->name, roff_name[tok], sz + 1);
623: slot = ohash_qlookup(htab, req->name);
624: ohash_insert(htab, slot, req);
1.85 kristaps 625: }
1.295 schwarze 626: return htab;
1.85 kristaps 627: }
628:
1.295 schwarze 629: void
630: roffhash_free(struct ohash *htab)
1.67 kristaps 631: {
1.295 schwarze 632: struct roffreq *req;
633: unsigned int slot;
1.67 kristaps 634:
1.295 schwarze 635: if (htab == NULL)
636: return;
637: for (req = ohash_first(htab, &slot); req != NULL;
638: req = ohash_next(htab, &slot))
639: free(req);
640: ohash_delete(htab);
641: free(htab);
642: }
643:
644: enum roff_tok
645: roffhash_find(struct ohash *htab, const char *name, size_t sz)
646: {
647: struct roffreq *req;
648: const char *end;
649:
650: if (sz) {
651: end = name + sz;
652: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
653: } else
654: req = ohash_find(htab, ohash_qlookup(htab, name));
655: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 656: }
657:
1.266 schwarze 658: /* --- stack of request blocks -------------------------------------------- */
659:
1.67 kristaps 660: /*
661: * Pop the current node off of the stack of roff instructions currently
662: * pending.
663: */
664: static void
665: roffnode_pop(struct roff *r)
666: {
667: struct roffnode *p;
668:
1.75 kristaps 669: assert(r->last);
1.207 schwarze 670: p = r->last;
1.82 kristaps 671:
1.75 kristaps 672: r->last = r->last->parent;
1.106 kristaps 673: free(p->name);
674: free(p->end);
1.67 kristaps 675: free(p);
676: }
677:
678: /*
679: * Push a roff node onto the instruction stack. This must later be
680: * removed with roffnode_pop().
681: */
1.98 schwarze 682: static void
1.294 schwarze 683: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 684: int line, int col)
1.67 kristaps 685: {
686: struct roffnode *p;
687:
1.98 schwarze 688: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 689: p->tok = tok;
1.106 kristaps 690: if (name)
691: p->name = mandoc_strdup(name);
1.67 kristaps 692: p->parent = r->last;
693: p->line = line;
694: p->col = col;
1.198 schwarze 695: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 696:
697: r->last = p;
698: }
699:
1.266 schwarze 700: /* --- roff parser state data management ---------------------------------- */
701:
1.67 kristaps 702: static void
703: roff_free1(struct roff *r)
704: {
1.176 schwarze 705: struct tbl_node *tbl;
1.125 kristaps 706: struct eqn_node *e;
1.167 kristaps 707: int i;
1.67 kristaps 708:
1.176 schwarze 709: while (NULL != (tbl = r->first_tbl)) {
710: r->first_tbl = tbl->next;
711: tbl_free(tbl);
1.109 kristaps 712: }
1.113 kristaps 713: r->first_tbl = r->last_tbl = r->tbl = NULL;
714:
1.125 kristaps 715: while (NULL != (e = r->first_eqn)) {
716: r->first_eqn = e->next;
717: eqn_free(e);
718: }
719: r->first_eqn = r->last_eqn = r->eqn = NULL;
720:
1.67 kristaps 721: while (r->last)
722: roffnode_pop(r);
1.109 kristaps 723:
1.223 schwarze 724: free (r->rstack);
725: r->rstack = NULL;
726: r->rstacksz = 0;
727: r->rstackpos = -1;
728:
729: roff_freereg(r->regtab);
730: r->regtab = NULL;
731:
1.167 kristaps 732: roff_freestr(r->strtab);
733: roff_freestr(r->xmbtab);
734: r->strtab = r->xmbtab = NULL;
735:
736: if (r->xtab)
737: for (i = 0; i < 128; i++)
738: free(r->xtab[i].p);
739: free(r->xtab);
740: r->xtab = NULL;
1.67 kristaps 741: }
742:
743: void
744: roff_reset(struct roff *r)
745: {
746: roff_free1(r);
1.227 schwarze 747: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.174 kristaps 748: r->control = 0;
1.67 kristaps 749: }
750:
751: void
752: roff_free(struct roff *r)
753: {
754: roff_free1(r);
1.295 schwarze 755: roffhash_free(r->reqtab);
1.67 kristaps 756: free(r);
757: }
758:
759: struct roff *
1.279 schwarze 760: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 761: {
762: struct roff *r;
763:
1.98 schwarze 764: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 765: r->parse = parse;
1.295 schwarze 766: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.199 schwarze 767: r->options = options;
1.227 schwarze 768: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 769: r->rstackpos = -1;
1.277 schwarze 770: return r;
1.265 schwarze 771: }
772:
1.266 schwarze 773: /* --- syntax tree state data management ---------------------------------- */
774:
1.265 schwarze 775: static void
776: roff_man_free1(struct roff_man *man)
777: {
778:
1.266 schwarze 779: if (man->first != NULL)
780: roff_node_delete(man, man->first);
1.265 schwarze 781: free(man->meta.msec);
782: free(man->meta.vol);
783: free(man->meta.os);
784: free(man->meta.arch);
785: free(man->meta.title);
786: free(man->meta.name);
787: free(man->meta.date);
788: }
789:
790: static void
791: roff_man_alloc1(struct roff_man *man)
792: {
793:
794: memset(&man->meta, 0, sizeof(man->meta));
795: man->first = mandoc_calloc(1, sizeof(*man->first));
796: man->first->type = ROFFT_ROOT;
797: man->last = man->first;
798: man->last_es = NULL;
799: man->flags = 0;
800: man->macroset = MACROSET_NONE;
801: man->lastsec = man->lastnamed = SEC_NONE;
802: man->next = ROFF_NEXT_CHILD;
803: }
804:
805: void
806: roff_man_reset(struct roff_man *man)
807: {
808:
809: roff_man_free1(man);
810: roff_man_alloc1(man);
811: }
812:
813: void
814: roff_man_free(struct roff_man *man)
815: {
816:
817: roff_man_free1(man);
818: free(man);
819: }
820:
821: struct roff_man *
822: roff_man_alloc(struct roff *roff, struct mparse *parse,
823: const char *defos, int quick)
824: {
825: struct roff_man *man;
826:
827: man = mandoc_calloc(1, sizeof(*man));
828: man->parse = parse;
829: man->roff = roff;
830: man->defos = defos;
831: man->quick = quick;
832: roff_man_alloc1(man);
1.296 ! schwarze 833: roff->man = man;
1.277 schwarze 834: return man;
1.67 kristaps 835: }
836:
1.266 schwarze 837: /* --- syntax tree handling ----------------------------------------------- */
838:
839: struct roff_node *
840: roff_node_alloc(struct roff_man *man, int line, int pos,
841: enum roff_type type, int tok)
842: {
843: struct roff_node *n;
844:
845: n = mandoc_calloc(1, sizeof(*n));
846: n->line = line;
847: n->pos = pos;
848: n->tok = tok;
849: n->type = type;
850: n->sec = man->lastsec;
851:
852: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 853: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 854: else
1.285 schwarze 855: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 856: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 857: n->flags |= NODE_LINE;
1.266 schwarze 858: man->flags &= ~MDOC_NEWLINE;
859:
1.277 schwarze 860: return n;
1.266 schwarze 861: }
862:
863: void
864: roff_node_append(struct roff_man *man, struct roff_node *n)
865: {
866:
867: switch (man->next) {
868: case ROFF_NEXT_SIBLING:
1.281 schwarze 869: if (man->last->next != NULL) {
870: n->next = man->last->next;
871: man->last->next->prev = n;
872: } else
873: man->last->parent->last = n;
1.266 schwarze 874: man->last->next = n;
875: n->prev = man->last;
876: n->parent = man->last->parent;
877: break;
878: case ROFF_NEXT_CHILD:
1.287 schwarze 879: if (man->last->child != NULL) {
880: n->next = man->last->child;
881: man->last->child->prev = n;
882: } else
883: man->last->last = n;
1.266 schwarze 884: man->last->child = n;
885: n->parent = man->last;
886: break;
887: default:
888: abort();
889: }
1.282 schwarze 890: man->last = n;
1.266 schwarze 891:
892: switch (n->type) {
893: case ROFFT_HEAD:
894: n->parent->head = n;
895: break;
896: case ROFFT_BODY:
1.282 schwarze 897: if (n->end != ENDBODY_NOT)
898: return;
1.266 schwarze 899: n->parent->body = n;
900: break;
901: case ROFFT_TAIL:
902: n->parent->tail = n;
903: break;
904: default:
1.282 schwarze 905: return;
1.266 schwarze 906: }
1.282 schwarze 907:
908: /*
909: * Copy over the normalised-data pointer of our parent. Not
910: * everybody has one, but copying a null pointer is fine.
911: */
912:
913: n->norm = n->parent->norm;
914: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 915: }
916:
1.267 schwarze 917: void
918: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
919: {
920: struct roff_node *n;
921:
922: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
923: n->string = roff_strdup(man->roff, word);
924: roff_node_append(man, n);
1.286 schwarze 925: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 926: man->next = ROFF_NEXT_SIBLING;
927: }
928:
929: void
930: roff_word_append(struct roff_man *man, const char *word)
931: {
932: struct roff_node *n;
933: char *addstr, *newstr;
934:
935: n = man->last;
936: addstr = roff_strdup(man->roff, word);
937: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
938: free(addstr);
939: free(n->string);
940: n->string = newstr;
941: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 942: }
943:
944: void
945: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
946: {
947: struct roff_node *n;
948:
949: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
950: roff_node_append(man, n);
951: man->next = ROFF_NEXT_CHILD;
952: }
953:
954: struct roff_node *
955: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
956: {
957: struct roff_node *n;
958:
959: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
960: roff_node_append(man, n);
961: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 962: return n;
1.267 schwarze 963: }
964:
1.266 schwarze 965: struct roff_node *
966: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
967: {
968: struct roff_node *n;
969:
970: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
971: roff_node_append(man, n);
972: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 973: return n;
1.266 schwarze 974: }
975:
976: struct roff_node *
977: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
978: {
979: struct roff_node *n;
980:
981: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
982: roff_node_append(man, n);
983: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 984: return n;
1.267 schwarze 985: }
986:
987: void
988: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
989: {
990: struct roff_node *n;
991:
992: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
993: n->eqn = eqn;
994: if (eqn->ln > man->last->line)
1.285 schwarze 995: n->flags |= NODE_LINE;
1.267 schwarze 996: roff_node_append(man, n);
997: man->next = ROFF_NEXT_SIBLING;
998: }
999:
1000: void
1001: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1002: {
1003: struct roff_node *n;
1004:
1005: if (man->macroset == MACROSET_MAN)
1006: man_breakscope(man, TOKEN_NONE);
1007: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1008: n->span = tbl;
1009: roff_node_append(man, n);
1.286 schwarze 1010: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 1011: man->next = ROFF_NEXT_SIBLING;
1.266 schwarze 1012: }
1013:
1014: void
1015: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1016: {
1017:
1018: /* Adjust siblings. */
1019:
1020: if (n->prev)
1021: n->prev->next = n->next;
1022: if (n->next)
1023: n->next->prev = n->prev;
1024:
1025: /* Adjust parent. */
1026:
1027: if (n->parent != NULL) {
1028: if (n->parent->child == n)
1029: n->parent->child = n->next;
1030: if (n->parent->last == n)
1031: n->parent->last = n->prev;
1032: }
1033:
1034: /* Adjust parse point. */
1035:
1036: if (man == NULL)
1037: return;
1038: if (man->last == n) {
1039: if (n->prev == NULL) {
1040: man->last = n->parent;
1041: man->next = ROFF_NEXT_CHILD;
1042: } else {
1043: man->last = n->prev;
1044: man->next = ROFF_NEXT_SIBLING;
1045: }
1046: }
1047: if (man->first == n)
1048: man->first = NULL;
1049: }
1050:
1051: void
1052: roff_node_free(struct roff_node *n)
1053: {
1054:
1055: if (n->args != NULL)
1056: mdoc_argv_free(n->args);
1057: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1058: free(n->norm);
1059: free(n->string);
1060: free(n);
1061: }
1062:
1063: void
1064: roff_node_delete(struct roff_man *man, struct roff_node *n)
1065: {
1066:
1067: while (n->child != NULL)
1068: roff_node_delete(man, n->child);
1069: roff_node_unlink(man, n);
1070: roff_node_free(n);
1.269 schwarze 1071: }
1072:
1073: void
1074: deroff(char **dest, const struct roff_node *n)
1075: {
1076: char *cp;
1077: size_t sz;
1078:
1079: if (n->type != ROFFT_TEXT) {
1080: for (n = n->child; n != NULL; n = n->next)
1081: deroff(dest, n);
1082: return;
1083: }
1084:
1.288 schwarze 1085: /* Skip leading whitespace. */
1.269 schwarze 1086:
1.288 schwarze 1087: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1088: if (cp[0] == '\\' && cp[1] != '\0' &&
1089: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1090: cp++;
1.288 schwarze 1091: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1092: break;
1093: }
1094:
1.289 schwarze 1095: /* Skip trailing backslash. */
1096:
1097: sz = strlen(cp);
1.290 schwarze 1098: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1099: sz--;
1100:
1.269 schwarze 1101: /* Skip trailing whitespace. */
1102:
1.289 schwarze 1103: for (; sz; sz--)
1.269 schwarze 1104: if ( ! isspace((unsigned char)cp[sz-1]))
1105: break;
1106:
1107: /* Skip empty strings. */
1108:
1109: if (sz == 0)
1110: return;
1111:
1112: if (*dest == NULL) {
1113: *dest = mandoc_strndup(cp, sz);
1114: return;
1115: }
1116:
1117: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1118: free(*dest);
1119: *dest = cp;
1.266 schwarze 1120: }
1121:
1122: /* --- main functions of the roff parser ---------------------------------- */
1123:
1.94 kristaps 1124: /*
1.206 schwarze 1125: * In the current line, expand escape sequences that tend to get
1126: * used in numerical expressions and conditional requests.
1127: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1128: */
1.172 schwarze 1129: static enum rofferr
1.238 schwarze 1130: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1131: {
1.208 schwarze 1132: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1133: const char *start; /* start of the string to process */
1.209 schwarze 1134: char *stesc; /* start of an escape sequence ('\\') */
1.108 schwarze 1135: const char *stnam; /* start of the name, after "[(*" */
1136: const char *cp; /* end of the name, e.g. before ']' */
1137: const char *res; /* the string to be substituted */
1.238 schwarze 1138: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1139: size_t maxl; /* expected length of the escape name */
1140: size_t naml; /* actual length of the escape name */
1.237 schwarze 1141: enum mandoc_esc esc; /* type of the escape sequence */
1142: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1143: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1144: int npos; /* position in numeric expression */
1.218 schwarze 1145: int arg_complete; /* argument not interrupted by eol */
1.206 schwarze 1146: char term; /* character terminating the escape */
1.94 kristaps 1147:
1.170 schwarze 1148: expand_count = 0;
1.238 schwarze 1149: start = buf->buf + pos;
1.205 schwarze 1150: stesc = strchr(start, '\0') - 1;
1151: while (stesc-- > start) {
1.170 schwarze 1152:
1.205 schwarze 1153: /* Search backwards for the next backslash. */
1154:
1.238 schwarze 1155: if (*stesc != '\\')
1.205 schwarze 1156: continue;
1157:
1158: /* If it is escaped, skip it. */
1159:
1160: for (cp = stesc - 1; cp >= start; cp--)
1.238 schwarze 1161: if (*cp != '\\')
1.205 schwarze 1162: break;
1163:
1.238 schwarze 1164: if ((stesc - cp) % 2 == 0) {
1.209 schwarze 1165: stesc = (char *)cp;
1.205 schwarze 1166: continue;
1167: }
1.108 schwarze 1168:
1.206 schwarze 1169: /* Decide whether to expand or to check only. */
1.108 schwarze 1170:
1.206 schwarze 1171: term = '\0';
1.205 schwarze 1172: cp = stesc + 1;
1.181 schwarze 1173: switch (*cp) {
1.207 schwarze 1174: case '*':
1.181 schwarze 1175: res = NULL;
1176: break;
1.207 schwarze 1177: case 'B':
1178: case 'w':
1.206 schwarze 1179: term = cp[1];
1180: /* FALLTHROUGH */
1.207 schwarze 1181: case 'n':
1.181 schwarze 1182: res = ubuf;
1183: break;
1184: default:
1.237 schwarze 1185: esc = mandoc_escape(&cp, &stnam, &inaml);
1186: if (esc == ESCAPE_ERROR ||
1187: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1188: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1189: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1190: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1191: "%.*s", (int)(cp - stesc), stesc);
1.205 schwarze 1192: continue;
1.152 kristaps 1193: }
1194:
1.205 schwarze 1195: if (EXPAND_LIMIT < ++expand_count) {
1196: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1197: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1198: return ROFF_IGN;
1.205 schwarze 1199: }
1.108 schwarze 1200:
1201: /*
1202: * The third character decides the length
1.181 schwarze 1203: * of the name of the string or register.
1.108 schwarze 1204: * Save a pointer to the name.
1205: */
1206:
1.238 schwarze 1207: if (term == '\0') {
1.206 schwarze 1208: switch (*++cp) {
1.207 schwarze 1209: case '\0':
1.206 schwarze 1210: maxl = 0;
1211: break;
1.207 schwarze 1212: case '(':
1.206 schwarze 1213: cp++;
1214: maxl = 2;
1215: break;
1.207 schwarze 1216: case '[':
1.206 schwarze 1217: cp++;
1218: term = ']';
1219: maxl = 0;
1220: break;
1221: default:
1222: maxl = 1;
1223: break;
1224: }
1225: } else {
1226: cp += 2;
1.94 kristaps 1227: maxl = 0;
1228: }
1.108 schwarze 1229: stnam = cp;
1.94 kristaps 1230:
1.108 schwarze 1231: /* Advance to the end of the name. */
1.94 kristaps 1232:
1.253 schwarze 1233: naml = 0;
1.218 schwarze 1234: arg_complete = 1;
1.253 schwarze 1235: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1236: if (*cp == '\0') {
1.219 schwarze 1237: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1238: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1239: arg_complete = 0;
1.206 schwarze 1240: break;
1.153 kristaps 1241: }
1.238 schwarze 1242: if (maxl == 0 && *cp == term) {
1.206 schwarze 1243: cp++;
1.253 schwarze 1244: break;
1245: }
1246: if (*cp++ != '\\' || stesc[1] != 'w') {
1247: naml++;
1248: continue;
1249: }
1250: switch (mandoc_escape(&cp, NULL, NULL)) {
1251: case ESCAPE_SPECIAL:
1252: case ESCAPE_UNICODE:
1253: case ESCAPE_NUMBERED:
1254: case ESCAPE_OVERSTRIKE:
1255: naml++;
1256: break;
1257: default:
1.94 kristaps 1258: break;
1.206 schwarze 1259: }
1.94 kristaps 1260: }
1261:
1.108 schwarze 1262: /*
1263: * Retrieve the replacement string; if it is
1264: * undefined, resume searching for escapes.
1265: */
1266:
1.206 schwarze 1267: switch (stesc[1]) {
1.207 schwarze 1268: case '*':
1.218 schwarze 1269: if (arg_complete)
1270: res = roff_getstrn(r, stnam, naml);
1.206 schwarze 1271: break;
1.207 schwarze 1272: case 'B':
1.206 schwarze 1273: npos = 0;
1.218 schwarze 1274: ubuf[0] = arg_complete &&
1.261 schwarze 1275: roff_evalnum(r, ln, stnam, &npos,
1276: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1277: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1278: ubuf[1] = '\0';
1279: break;
1.207 schwarze 1280: case 'n':
1.218 schwarze 1281: if (arg_complete)
1282: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1283: roff_getregn(r, stnam, naml));
1284: else
1285: ubuf[0] = '\0';
1.206 schwarze 1286: break;
1.207 schwarze 1287: case 'w':
1.218 schwarze 1288: /* use even incomplete args */
1.208 schwarze 1289: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1290: 24 * (int)naml);
1291: break;
1292: }
1.94 kristaps 1293:
1.238 schwarze 1294: if (res == NULL) {
1.219 schwarze 1295: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1296: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1297: "%.*s", (int)naml, stnam);
1.142 kristaps 1298: res = "";
1.246 schwarze 1299: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1300: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1301: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1302: return ROFF_IGN;
1.94 kristaps 1303: }
1304:
1.108 schwarze 1305: /* Replace the escape sequence by the string. */
1306:
1.209 schwarze 1307: *stesc = '\0';
1.238 schwarze 1308: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1309: buf->buf, res, cp) + 1;
1.94 kristaps 1310:
1.205 schwarze 1311: /* Prepare for the next replacement. */
1.94 kristaps 1312:
1.205 schwarze 1313: start = nbuf + pos;
1.238 schwarze 1314: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1315: free(buf->buf);
1316: buf->buf = nbuf;
1.154 kristaps 1317: }
1.277 schwarze 1318: return ROFF_CONT;
1.154 kristaps 1319: }
1320:
1321: /*
1.275 schwarze 1322: * Process text streams.
1.154 kristaps 1323: */
1324: static enum rofferr
1.238 schwarze 1325: roff_parsetext(struct buf *buf, int pos, int *offs)
1.154 kristaps 1326: {
1327: size_t sz;
1328: const char *start;
1.178 schwarze 1329: char *p;
1330: int isz;
1.154 kristaps 1331: enum mandoc_esc esc;
1332:
1.275 schwarze 1333: /* Spring the input line trap. */
1334:
1335: if (roffit_lines == 1) {
1336: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1337: free(buf->buf);
1338: buf->buf = p;
1339: buf->sz = isz + 1;
1340: *offs = 0;
1341: free(roffit_macro);
1342: roffit_lines = 0;
1.277 schwarze 1343: return ROFF_REPARSE;
1.275 schwarze 1344: } else if (roffit_lines > 1)
1345: --roffit_lines;
1346:
1347: /* Convert all breakable hyphens into ASCII_HYPH. */
1348:
1.238 schwarze 1349: start = p = buf->buf + pos;
1.154 kristaps 1350:
1.238 schwarze 1351: while (*p != '\0') {
1.154 kristaps 1352: sz = strcspn(p, "-\\");
1353: p += sz;
1354:
1.238 schwarze 1355: if (*p == '\0')
1.159 kristaps 1356: break;
1357:
1.238 schwarze 1358: if (*p == '\\') {
1.154 kristaps 1359: /* Skip over escapes. */
1360: p++;
1.189 schwarze 1361: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1362: if (esc == ESCAPE_ERROR)
1.154 kristaps 1363: break;
1.264 schwarze 1364: while (*p == '-')
1365: p++;
1.155 kristaps 1366: continue;
1.159 kristaps 1367: } else if (p == start) {
1.158 kristaps 1368: p++;
1.155 kristaps 1369: continue;
1.158 kristaps 1370: }
1.155 kristaps 1371:
1.171 schwarze 1372: if (isalpha((unsigned char)p[-1]) &&
1373: isalpha((unsigned char)p[1]))
1.155 kristaps 1374: *p = ASCII_HYPH;
1375: p++;
1.94 kristaps 1376: }
1.277 schwarze 1377: return ROFF_CONT;
1.94 kristaps 1378: }
1379:
1.67 kristaps 1380: enum rofferr
1.238 schwarze 1381: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1382: {
1.294 schwarze 1383: enum roff_tok t;
1.109 kristaps 1384: enum rofferr e;
1.238 schwarze 1385: int pos; /* parse point */
1.243 schwarze 1386: int spos; /* saved parse point for messages */
1.238 schwarze 1387: int ppos; /* original offset in buf->buf */
1388: int ctl; /* macro line (boolean) */
1389:
1390: ppos = pos = *offs;
1.79 kristaps 1391:
1.230 schwarze 1392: /* Handle in-line equation delimiters. */
1393:
1.236 schwarze 1394: if (r->tbl == NULL &&
1395: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1396: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1397: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1398: if (e == ROFF_REPARSE)
1.277 schwarze 1399: return e;
1.230 schwarze 1400: assert(e == ROFF_CONT);
1401: }
1402:
1403: /* Expand some escape sequences. */
1.94 kristaps 1404:
1.238 schwarze 1405: e = roff_res(r, buf, ln, pos);
1406: if (e == ROFF_IGN)
1.277 schwarze 1407: return e;
1.238 schwarze 1408: assert(e == ROFF_CONT);
1.94 kristaps 1409:
1.238 schwarze 1410: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1411:
1.94 kristaps 1412: /*
1.79 kristaps 1413: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1414: * text through the macro's filter.
1415: * Equations process all content themselves.
1416: * Tables process almost all content themselves, but we want
1417: * to warn about macros before passing it there.
1.79 kristaps 1418: */
1.74 kristaps 1419:
1.252 schwarze 1420: if (r->last != NULL && ! ctl) {
1.78 kristaps 1421: t = r->last->tok;
1.238 schwarze 1422: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1423: if (e == ROFF_IGN)
1.277 schwarze 1424: return e;
1.294 schwarze 1425: assert(e == ROFF_CONT);
1.182 schwarze 1426: }
1.252 schwarze 1427: if (r->eqn != NULL)
1.277 schwarze 1428: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.252 schwarze 1429: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.277 schwarze 1430: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.252 schwarze 1431: if ( ! ctl)
1.277 schwarze 1432: return roff_parsetext(buf, pos, offs);
1.228 schwarze 1433:
1434: /* Skip empty request lines. */
1435:
1.238 schwarze 1436: if (buf->buf[pos] == '"') {
1.228 schwarze 1437: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1438: ln, pos, NULL);
1.277 schwarze 1439: return ROFF_IGN;
1.238 schwarze 1440: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1441: return ROFF_IGN;
1.67 kristaps 1442:
1.79 kristaps 1443: /*
1444: * If a scope is open, go to the child handler for that macro,
1445: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1446: * Don't do so if an equation is open.
1.79 kristaps 1447: */
1.78 kristaps 1448:
1.79 kristaps 1449: if (r->last) {
1450: t = r->last->tok;
1.277 schwarze 1451: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1452: }
1.78 kristaps 1453:
1.243 schwarze 1454: /* No scope is open. This is a new request or macro. */
1455:
1456: spos = pos;
1457: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1458:
1459: /* Tables ignore most macros. */
1460:
1.294 schwarze 1461: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS)) {
1.243 schwarze 1462: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1463: ln, pos, buf->buf + spos);
1.257 schwarze 1464: if (t == ROFF_TS)
1.277 schwarze 1465: return ROFF_IGN;
1.257 schwarze 1466: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1467: pos++;
1.291 schwarze 1468: while (buf->buf[pos] == ' ')
1.257 schwarze 1469: pos++;
1.277 schwarze 1470: return tbl_read(r->tbl, ln, buf->buf, pos);
1.243 schwarze 1471: }
1472:
1.79 kristaps 1473: /*
1.243 schwarze 1474: * This is neither a roff request nor a user-defined macro.
1475: * Let the standard macro set parsers handle it.
1.79 kristaps 1476: */
1.67 kristaps 1477:
1.294 schwarze 1478: if (t == TOKEN_NONE)
1.277 schwarze 1479: return ROFF_CONT;
1.243 schwarze 1480:
1481: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1482:
1.296 ! schwarze 1483: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1484: }
1485:
1.117 kristaps 1486: void
1.74 kristaps 1487: roff_endparse(struct roff *r)
1488: {
1489:
1.110 kristaps 1490: if (r->last)
1.221 schwarze 1491: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1492: r->last->line, r->last->col,
1.295 schwarze 1493: roff_name[r->last->tok]);
1.117 kristaps 1494:
1.125 kristaps 1495: if (r->eqn) {
1.221 schwarze 1496: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1497: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.151 kristaps 1498: eqn_end(&r->eqn);
1.125 kristaps 1499: }
1500:
1.117 kristaps 1501: if (r->tbl) {
1.221 schwarze 1502: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1503: r->tbl->line, r->tbl->pos, "TS");
1.151 kristaps 1504: tbl_end(&r->tbl);
1.117 kristaps 1505: }
1.67 kristaps 1506: }
1507:
1508: /*
1509: * Parse a roff node's type from the input buffer. This must be in the
1510: * form of ".foo xxx" in the usual way.
1511: */
1.294 schwarze 1512: static enum roff_tok
1.214 schwarze 1513: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1514: {
1.214 schwarze 1515: char *cp;
1.106 kristaps 1516: const char *mac;
1517: size_t maclen;
1.294 schwarze 1518: enum roff_tok t;
1.67 kristaps 1519:
1.214 schwarze 1520: cp = buf + *pos;
1521:
1522: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1523: return TOKEN_NONE;
1.67 kristaps 1524:
1.214 schwarze 1525: mac = cp;
1526: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1527:
1.106 kristaps 1528: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.295 schwarze 1529: ? ROFF_USERDEF : roffhash_find(r->reqtab, mac, maclen);
1.67 kristaps 1530:
1.294 schwarze 1531: if (t != TOKEN_NONE)
1.214 schwarze 1532: *pos = cp - buf;
1.67 kristaps 1533:
1.277 schwarze 1534: return t;
1.67 kristaps 1535: }
1536:
1.266 schwarze 1537: /* --- handling of request blocks ----------------------------------------- */
1538:
1.67 kristaps 1539: static enum rofferr
1.76 kristaps 1540: roff_cblock(ROFF_ARGS)
1.67 kristaps 1541: {
1542:
1.79 kristaps 1543: /*
1544: * A block-close `..' should only be invoked as a child of an
1545: * ignore macro, otherwise raise a warning and just ignore it.
1546: */
1547:
1.238 schwarze 1548: if (r->last == NULL) {
1.221 schwarze 1549: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1550: ln, ppos, "..");
1.277 schwarze 1551: return ROFF_IGN;
1.76 kristaps 1552: }
1.67 kristaps 1553:
1.81 kristaps 1554: switch (r->last->tok) {
1.207 schwarze 1555: case ROFF_am:
1.220 schwarze 1556: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1557: case ROFF_ami:
1558: case ROFF_de:
1.108 schwarze 1559: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1560: case ROFF_dei:
1561: case ROFF_ig:
1.81 kristaps 1562: break;
1563: default:
1.221 schwarze 1564: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1565: ln, ppos, "..");
1.277 schwarze 1566: return ROFF_IGN;
1.76 kristaps 1567: }
1.67 kristaps 1568:
1.238 schwarze 1569: if (buf->buf[pos] != '\0')
1.217 schwarze 1570: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1571: ".. %s", buf->buf + pos);
1.71 kristaps 1572:
1573: roffnode_pop(r);
1.76 kristaps 1574: roffnode_cleanscope(r);
1.277 schwarze 1575: return ROFF_IGN;
1.71 kristaps 1576:
1.67 kristaps 1577: }
1578:
1.76 kristaps 1579: static void
1580: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1581: {
1582:
1.76 kristaps 1583: while (r->last) {
1.173 schwarze 1584: if (--r->last->endspan != 0)
1.76 kristaps 1585: break;
1586: roffnode_pop(r);
1587: }
1.67 kristaps 1588: }
1589:
1.195 schwarze 1590: static void
1591: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1592: {
1593:
1.76 kristaps 1594: if (NULL == r->last) {
1.221 schwarze 1595: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1596: ln, ppos, "\\}");
1.195 schwarze 1597: return;
1.76 kristaps 1598: }
1599:
1.82 kristaps 1600: switch (r->last->tok) {
1.207 schwarze 1601: case ROFF_el:
1602: case ROFF_ie:
1603: case ROFF_if:
1.82 kristaps 1604: break;
1605: default:
1.221 schwarze 1606: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1607: ln, ppos, "\\}");
1.195 schwarze 1608: return;
1.75 kristaps 1609: }
1610:
1.76 kristaps 1611: if (r->last->endspan > -1) {
1.221 schwarze 1612: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1613: ln, ppos, "\\}");
1.195 schwarze 1614: return;
1.76 kristaps 1615: }
1616:
1.75 kristaps 1617: roffnode_pop(r);
1.76 kristaps 1618: roffnode_cleanscope(r);
1.195 schwarze 1619: return;
1.76 kristaps 1620: }
1621:
1622: static enum rofferr
1.80 kristaps 1623: roff_block(ROFF_ARGS)
1.76 kristaps 1624: {
1.220 schwarze 1625: const char *name;
1626: char *iname, *cp;
1.213 schwarze 1627: size_t namesz;
1.106 kristaps 1628:
1.220 schwarze 1629: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1630:
1.238 schwarze 1631: if (tok == ROFF_de1)
1.220 schwarze 1632: tok = ROFF_de;
1.251 schwarze 1633: else if (tok == ROFF_dei1)
1634: tok = ROFF_dei;
1.238 schwarze 1635: else if (tok == ROFF_am1)
1.220 schwarze 1636: tok = ROFF_am;
1.251 schwarze 1637: else if (tok == ROFF_ami1)
1638: tok = ROFF_ami;
1.220 schwarze 1639:
1640: /* Parse the macro name argument. */
1641:
1.238 schwarze 1642: cp = buf->buf + pos;
1643: if (tok == ROFF_ig) {
1.220 schwarze 1644: iname = NULL;
1645: namesz = 0;
1646: } else {
1647: iname = cp;
1648: namesz = roff_getname(r, &cp, ln, ppos);
1649: iname[namesz] = '\0';
1650: }
1.107 kristaps 1651:
1.220 schwarze 1652: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1653:
1.238 schwarze 1654: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1655: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1656: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1657: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1658: "%.*s", (int)namesz, iname);
1659: namesz = 0;
1660: } else
1661: namesz = strlen(name);
1662: } else
1663: name = iname;
1.107 kristaps 1664:
1.238 schwarze 1665: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1666: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1667: ln, ppos, roff_name[tok]);
1.277 schwarze 1668: return ROFF_IGN;
1.220 schwarze 1669: }
1.80 kristaps 1670:
1.106 kristaps 1671: roffnode_push(r, tok, name, ln, ppos);
1672:
1673: /*
1674: * At the beginning of a `de' macro, clear the existing string
1675: * with the same name, if there is one. New content will be
1.193 schwarze 1676: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1677: */
1.107 kristaps 1678:
1.238 schwarze 1679: if (tok == ROFF_de || tok == ROFF_dei)
1.213 schwarze 1680: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.76 kristaps 1681:
1.238 schwarze 1682: if (*cp == '\0')
1.277 schwarze 1683: return ROFF_IGN;
1.78 kristaps 1684:
1.220 schwarze 1685: /* Get the custom end marker. */
1.107 kristaps 1686:
1.220 schwarze 1687: iname = cp;
1.213 schwarze 1688: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1689:
1690: /* Resolve the end marker if it is indirect. */
1691:
1.238 schwarze 1692: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1693: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1694: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1695: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1696: "%.*s", (int)namesz, iname);
1697: namesz = 0;
1698: } else
1699: namesz = strlen(name);
1700: } else
1701: name = iname;
1702:
1.213 schwarze 1703: if (namesz)
1704: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1705:
1.238 schwarze 1706: if (*cp != '\0')
1.217 schwarze 1707: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 1708: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 1709:
1.277 schwarze 1710: return ROFF_IGN;
1.78 kristaps 1711: }
1712:
1713: static enum rofferr
1.80 kristaps 1714: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1715: {
1.294 schwarze 1716: enum roff_tok t;
1.79 kristaps 1717: int i, j;
1718:
1719: /*
1720: * First check whether a custom macro exists at this level. If
1721: * it does, then check against it. This is some of groff's
1722: * stranger behaviours. If we encountered a custom end-scope
1723: * tag and that tag also happens to be a "real" macro, then we
1724: * need to try interpreting it again as a real macro. If it's
1725: * not, then return ignore. Else continue.
1726: */
1727:
1728: if (r->last->end) {
1.130 kristaps 1729: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1730: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1731: break;
1732:
1.238 schwarze 1733: if (r->last->end[j] == '\0' &&
1734: (buf->buf[i] == '\0' ||
1735: buf->buf[i] == ' ' ||
1736: buf->buf[i] == '\t')) {
1.79 kristaps 1737: roffnode_pop(r);
1738: roffnode_cleanscope(r);
1739:
1.238 schwarze 1740: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1741: i++;
1742:
1743: pos = i;
1.238 schwarze 1744: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 1745: TOKEN_NONE)
1.277 schwarze 1746: return ROFF_RERUN;
1747: return ROFF_IGN;
1.79 kristaps 1748: }
1749: }
1750:
1751: /*
1752: * If we have no custom end-query or lookup failed, then try
1753: * pulling it out of the hashtable.
1754: */
1755:
1.238 schwarze 1756: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1757:
1.238 schwarze 1758: if (t != ROFF_cblock) {
1759: if (tok != ROFF_ig)
1760: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1761: return ROFF_IGN;
1.106 kristaps 1762: }
1.79 kristaps 1763:
1.277 schwarze 1764: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1765: }
1766:
1767: static enum rofferr
1.80 kristaps 1768: roff_block_text(ROFF_ARGS)
1.78 kristaps 1769: {
1770:
1.238 schwarze 1771: if (tok != ROFF_ig)
1772: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1773:
1.277 schwarze 1774: return ROFF_IGN;
1.78 kristaps 1775: }
1776:
1777: static enum rofferr
1.82 kristaps 1778: roff_cond_sub(ROFF_ARGS)
1779: {
1.294 schwarze 1780: enum roff_tok t;
1.139 kristaps 1781: char *ep;
1.198 schwarze 1782: int rr;
1.82 kristaps 1783:
1784: rr = r->last->rule;
1.139 kristaps 1785: roffnode_cleanscope(r);
1.238 schwarze 1786: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.82 kristaps 1787:
1.139 kristaps 1788: /*
1.177 schwarze 1789: * Fully handle known macros when they are structurally
1790: * required or when the conditional evaluated to true.
1.87 kristaps 1791: */
1792:
1.294 schwarze 1793: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.277 schwarze 1794: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.144 kristaps 1795:
1.196 schwarze 1796: /*
1797: * If `\}' occurs on a macro line without a preceding macro,
1798: * drop the line completely.
1799: */
1800:
1.238 schwarze 1801: ep = buf->buf + pos;
1802: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1803: rr = 0;
1.196 schwarze 1804:
1.177 schwarze 1805: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1806:
1.238 schwarze 1807: while ((ep = strchr(ep, '\\')) != NULL) {
1808: if (*(++ep) == '}') {
1.197 schwarze 1809: *ep = '&';
1.238 schwarze 1810: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1811: }
1.247 schwarze 1812: if (*ep != '\0')
1813: ++ep;
1.177 schwarze 1814: }
1.277 schwarze 1815: return rr ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 1816: }
1817:
1818: static enum rofferr
1819: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1820: {
1.140 kristaps 1821: char *ep;
1.198 schwarze 1822: int rr;
1.82 kristaps 1823:
1824: rr = r->last->rule;
1.140 kristaps 1825: roffnode_cleanscope(r);
1.82 kristaps 1826:
1.238 schwarze 1827: ep = buf->buf + pos;
1828: while ((ep = strchr(ep, '\\')) != NULL) {
1829: if (*(++ep) == '}') {
1.197 schwarze 1830: *ep = '&';
1.238 schwarze 1831: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1832: }
1.247 schwarze 1833: if (*ep != '\0')
1834: ++ep;
1.78 kristaps 1835: }
1.277 schwarze 1836: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 1837: }
1838:
1.266 schwarze 1839: /* --- handling of numeric and conditional expressions -------------------- */
1840:
1.204 schwarze 1841: /*
1842: * Parse a single signed integer number. Stop at the first non-digit.
1843: * If there is at least one digit, return success and advance the
1844: * parse point, else return failure and let the parse point unchanged.
1845: * Ignore overflows, treat them just like the C language.
1846: */
1.184 schwarze 1847: static int
1.261 schwarze 1848: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 1849: {
1.261 schwarze 1850: int myres, scaled, n, p;
1.206 schwarze 1851:
1852: if (NULL == res)
1853: res = &myres;
1.184 schwarze 1854:
1855: p = *pos;
1856: n = v[p] == '-';
1.261 schwarze 1857: if (n || v[p] == '+')
1.184 schwarze 1858: p++;
1859:
1.261 schwarze 1860: if (flags & ROFFNUM_WHITE)
1861: while (isspace((unsigned char)v[p]))
1862: p++;
1863:
1.184 schwarze 1864: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 1865: *res = 10 * *res + v[p] - '0';
1.184 schwarze 1866: if (p == *pos + n)
1867: return 0;
1868:
1869: if (n)
1870: *res = -*res;
1871:
1.254 schwarze 1872: /* Each number may be followed by one optional scaling unit. */
1873:
1874: switch (v[p]) {
1875: case 'f':
1.261 schwarze 1876: scaled = *res * 65536;
1.254 schwarze 1877: break;
1878: case 'i':
1.261 schwarze 1879: scaled = *res * 240;
1.254 schwarze 1880: break;
1881: case 'c':
1.261 schwarze 1882: scaled = *res * 240 / 2.54;
1.254 schwarze 1883: break;
1884: case 'v':
1885: case 'P':
1.261 schwarze 1886: scaled = *res * 40;
1.254 schwarze 1887: break;
1888: case 'm':
1889: case 'n':
1.261 schwarze 1890: scaled = *res * 24;
1.254 schwarze 1891: break;
1892: case 'p':
1.261 schwarze 1893: scaled = *res * 10 / 3;
1.254 schwarze 1894: break;
1895: case 'u':
1.261 schwarze 1896: scaled = *res;
1.254 schwarze 1897: break;
1898: case 'M':
1.261 schwarze 1899: scaled = *res * 6 / 25;
1.254 schwarze 1900: break;
1901: default:
1.261 schwarze 1902: scaled = *res;
1.254 schwarze 1903: p--;
1904: break;
1905: }
1.261 schwarze 1906: if (flags & ROFFNUM_SCALE)
1907: *res = scaled;
1.254 schwarze 1908:
1909: *pos = p + 1;
1.277 schwarze 1910: return 1;
1.184 schwarze 1911: }
1912:
1.198 schwarze 1913: /*
1914: * Evaluate a string comparison condition.
1915: * The first character is the delimiter.
1916: * Succeed if the string up to its second occurrence
1917: * matches the string up to its third occurence.
1918: * Advance the cursor after the third occurrence
1919: * or lacking that, to the end of the line.
1920: */
1921: static int
1922: roff_evalstrcond(const char *v, int *pos)
1923: {
1924: const char *s1, *s2, *s3;
1925: int match;
1926:
1927: match = 0;
1928: s1 = v + *pos; /* initial delimiter */
1929: s2 = s1 + 1; /* for scanning the first string */
1930: s3 = strchr(s2, *s1); /* for scanning the second string */
1931:
1932: if (NULL == s3) /* found no middle delimiter */
1933: goto out;
1934:
1935: while ('\0' != *++s3) {
1936: if (*s2 != *s3) { /* mismatch */
1937: s3 = strchr(s3, *s1);
1938: break;
1939: }
1940: if (*s3 == *s1) { /* found the final delimiter */
1941: match = 1;
1942: break;
1943: }
1944: s2++;
1945: }
1946:
1947: out:
1948: if (NULL == s3)
1949: s3 = strchr(s2, '\0');
1.242 schwarze 1950: else if (*s3 != '\0')
1.198 schwarze 1951: s3++;
1952: *pos = s3 - v;
1.277 schwarze 1953: return match;
1.198 schwarze 1954: }
1955:
1.204 schwarze 1956: /*
1957: * Evaluate an optionally negated single character, numerical,
1958: * or string condition.
1959: */
1.198 schwarze 1960: static int
1.271 schwarze 1961: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 1962: {
1.271 schwarze 1963: char *cp, *name;
1964: size_t sz;
1.241 schwarze 1965: int number, savepos, wanttrue;
1.88 kristaps 1966:
1.198 schwarze 1967: if ('!' == v[*pos]) {
1968: wanttrue = 0;
1969: (*pos)++;
1970: } else
1971: wanttrue = 1;
1972:
1.88 kristaps 1973: switch (v[*pos]) {
1.240 schwarze 1974: case '\0':
1.277 schwarze 1975: return 0;
1.207 schwarze 1976: case 'n':
1977: case 'o':
1.88 kristaps 1978: (*pos)++;
1.277 schwarze 1979: return wanttrue;
1.207 schwarze 1980: case 'c':
1981: case 'd':
1982: case 'e':
1983: case 't':
1.239 schwarze 1984: case 'v':
1.88 kristaps 1985: (*pos)++;
1.277 schwarze 1986: return !wanttrue;
1.271 schwarze 1987: case 'r':
1988: cp = name = v + ++*pos;
1989: sz = roff_getname(r, &cp, ln, *pos);
1990: *pos = cp - v;
1.277 schwarze 1991: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.88 kristaps 1992: default:
1993: break;
1994: }
1995:
1.241 schwarze 1996: savepos = *pos;
1.261 schwarze 1997: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 1998: return (number > 0) == wanttrue;
1.241 schwarze 1999: else if (*pos == savepos)
1.277 schwarze 2000: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2001: else
1.277 schwarze 2002: return 0;
1.88 kristaps 2003: }
2004:
1.74 kristaps 2005: static enum rofferr
1.103 kristaps 2006: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2007: {
1.123 schwarze 2008:
1.277 schwarze 2009: return ROFF_IGN;
1.89 kristaps 2010: }
2011:
1.104 kristaps 2012: static enum rofferr
1.251 schwarze 2013: roff_insec(ROFF_ARGS)
2014: {
2015:
2016: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2017: ln, ppos, roff_name[tok]);
1.277 schwarze 2018: return ROFF_IGN;
1.251 schwarze 2019: }
2020:
2021: static enum rofferr
2022: roff_unsupp(ROFF_ARGS)
2023: {
2024:
2025: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2026: ln, ppos, roff_name[tok]);
1.277 schwarze 2027: return ROFF_IGN;
1.251 schwarze 2028: }
2029:
2030: static enum rofferr
1.82 kristaps 2031: roff_cond(ROFF_ARGS)
1.74 kristaps 2032: {
1.173 schwarze 2033:
2034: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2035:
1.207 schwarze 2036: /*
1.134 kristaps 2037: * An `.el' has no conditional body: it will consume the value
2038: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2039: * defaults to DENY.
1.134 kristaps 2040: *
2041: * If we're not an `el', however, then evaluate the conditional.
2042: */
1.133 kristaps 2043:
1.238 schwarze 2044: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2045: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2046: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2047:
1.134 kristaps 2048: /*
2049: * An if-else will put the NEGATION of the current evaluated
2050: * conditional into the stack of rules.
2051: */
2052:
1.238 schwarze 2053: if (tok == ROFF_ie) {
1.223 schwarze 2054: if (r->rstackpos + 1 == r->rstacksz) {
2055: r->rstacksz += 16;
2056: r->rstack = mandoc_reallocarray(r->rstack,
2057: r->rstacksz, sizeof(int));
1.134 kristaps 2058: }
1.198 schwarze 2059: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2060: }
1.88 kristaps 2061:
2062: /* If the parent has false as its rule, then so do we. */
2063:
1.198 schwarze 2064: if (r->last->parent && !r->last->parent->rule)
2065: r->last->rule = 0;
1.88 kristaps 2066:
2067: /*
1.173 schwarze 2068: * Determine scope.
2069: * If there is nothing on the line after the conditional,
2070: * not even whitespace, use next-line scope.
1.88 kristaps 2071: */
1.74 kristaps 2072:
1.238 schwarze 2073: if (buf->buf[pos] == '\0') {
1.173 schwarze 2074: r->last->endspan = 2;
2075: goto out;
2076: }
2077:
1.238 schwarze 2078: while (buf->buf[pos] == ' ')
1.173 schwarze 2079: pos++;
2080:
2081: /* An opening brace requests multiline scope. */
1.75 kristaps 2082:
1.238 schwarze 2083: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2084: r->last->endspan = -1;
2085: pos += 2;
1.272 schwarze 2086: while (buf->buf[pos] == ' ')
2087: pos++;
1.173 schwarze 2088: goto out;
1.207 schwarze 2089: }
1.74 kristaps 2090:
1.77 kristaps 2091: /*
1.173 schwarze 2092: * Anything else following the conditional causes
2093: * single-line scope. Warn if the scope contains
2094: * nothing but trailing whitespace.
1.77 kristaps 2095: */
2096:
1.238 schwarze 2097: if (buf->buf[pos] == '\0')
1.216 schwarze 2098: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2099: ln, ppos, roff_name[tok]);
1.77 kristaps 2100:
1.173 schwarze 2101: r->last->endspan = 1;
1.74 kristaps 2102:
1.173 schwarze 2103: out:
1.75 kristaps 2104: *offs = pos;
1.277 schwarze 2105: return ROFF_RERUN;
1.83 schwarze 2106: }
2107:
2108: static enum rofferr
1.92 schwarze 2109: roff_ds(ROFF_ARGS)
2110: {
1.212 schwarze 2111: char *string;
2112: const char *name;
2113: size_t namesz;
1.96 kristaps 2114:
1.251 schwarze 2115: /* Ignore groff compatibility mode for now. */
2116:
2117: if (tok == ROFF_ds1)
2118: tok = ROFF_ds;
2119: else if (tok == ROFF_as1)
2120: tok = ROFF_as;
2121:
1.96 kristaps 2122: /*
1.212 schwarze 2123: * The first word is the name of the string.
2124: * If it is empty or terminated by an escape sequence,
2125: * abort the `ds' request without defining anything.
1.96 kristaps 2126: */
1.92 schwarze 2127:
1.238 schwarze 2128: name = string = buf->buf + pos;
2129: if (*name == '\0')
1.277 schwarze 2130: return ROFF_IGN;
1.92 schwarze 2131:
1.212 schwarze 2132: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2133: if (name[namesz] == '\\')
1.277 schwarze 2134: return ROFF_IGN;
1.212 schwarze 2135:
2136: /* Read past the initial double-quote, if any. */
1.238 schwarze 2137: if (*string == '"')
1.92 schwarze 2138: string++;
2139:
1.96 kristaps 2140: /* The rest is the value. */
1.212 schwarze 2141: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2142: ROFF_as == tok);
1.277 schwarze 2143: return ROFF_IGN;
1.92 schwarze 2144: }
2145:
1.204 schwarze 2146: /*
2147: * Parse a single operator, one or two characters long.
2148: * If the operator is recognized, return success and advance the
2149: * parse point, else return failure and let the parse point unchanged.
2150: */
2151: static int
2152: roff_getop(const char *v, int *pos, char *res)
2153: {
2154:
2155: *res = v[*pos];
2156:
2157: switch (*res) {
1.207 schwarze 2158: case '+':
2159: case '-':
2160: case '*':
2161: case '/':
2162: case '%':
2163: case '&':
2164: case ':':
1.204 schwarze 2165: break;
2166: case '<':
2167: switch (v[*pos + 1]) {
1.207 schwarze 2168: case '=':
1.204 schwarze 2169: *res = 'l';
2170: (*pos)++;
2171: break;
1.207 schwarze 2172: case '>':
1.204 schwarze 2173: *res = '!';
2174: (*pos)++;
2175: break;
1.207 schwarze 2176: case '?':
1.204 schwarze 2177: *res = 'i';
2178: (*pos)++;
2179: break;
2180: default:
2181: break;
2182: }
2183: break;
2184: case '>':
2185: switch (v[*pos + 1]) {
1.207 schwarze 2186: case '=':
1.204 schwarze 2187: *res = 'g';
2188: (*pos)++;
2189: break;
1.207 schwarze 2190: case '?':
1.204 schwarze 2191: *res = 'a';
2192: (*pos)++;
2193: break;
2194: default:
2195: break;
2196: }
2197: break;
2198: case '=':
2199: if ('=' == v[*pos + 1])
2200: (*pos)++;
2201: break;
2202: default:
1.277 schwarze 2203: return 0;
1.204 schwarze 2204: }
2205: (*pos)++;
2206:
1.277 schwarze 2207: return *res;
1.204 schwarze 2208: }
2209:
2210: /*
2211: * Evaluate either a parenthesized numeric expression
2212: * or a single signed integer number.
2213: */
2214: static int
1.235 schwarze 2215: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2216: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2217: {
2218:
2219: if ('(' != v[*pos])
1.277 schwarze 2220: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2221:
2222: (*pos)++;
1.261 schwarze 2223: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2224: return 0;
1.204 schwarze 2225:
1.206 schwarze 2226: /*
2227: * Omission of the closing parenthesis
2228: * is an error in validation mode,
2229: * but ignored in evaluation mode.
2230: */
2231:
1.204 schwarze 2232: if (')' == v[*pos])
2233: (*pos)++;
1.206 schwarze 2234: else if (NULL == res)
1.277 schwarze 2235: return 0;
1.204 schwarze 2236:
1.277 schwarze 2237: return 1;
1.204 schwarze 2238: }
2239:
2240: /*
2241: * Evaluate a complete numeric expression.
2242: * Proceed left to right, there is no concept of precedence.
2243: */
2244: static int
1.235 schwarze 2245: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2246: int *pos, int *res, int flags)
1.204 schwarze 2247: {
2248: int mypos, operand2;
2249: char operator;
2250:
2251: if (NULL == pos) {
2252: mypos = 0;
2253: pos = &mypos;
2254: }
2255:
1.261 schwarze 2256: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2257: while (isspace((unsigned char)v[*pos]))
2258: (*pos)++;
2259:
1.261 schwarze 2260: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2261: return 0;
1.204 schwarze 2262:
2263: while (1) {
1.261 schwarze 2264: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2265: while (isspace((unsigned char)v[*pos]))
2266: (*pos)++;
2267:
2268: if ( ! roff_getop(v, pos, &operator))
2269: break;
2270:
1.261 schwarze 2271: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2272: while (isspace((unsigned char)v[*pos]))
2273: (*pos)++;
2274:
1.261 schwarze 2275: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2276: return 0;
1.204 schwarze 2277:
1.261 schwarze 2278: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2279: while (isspace((unsigned char)v[*pos]))
2280: (*pos)++;
1.206 schwarze 2281:
2282: if (NULL == res)
2283: continue;
1.204 schwarze 2284:
2285: switch (operator) {
1.207 schwarze 2286: case '+':
1.204 schwarze 2287: *res += operand2;
2288: break;
1.207 schwarze 2289: case '-':
1.204 schwarze 2290: *res -= operand2;
2291: break;
1.207 schwarze 2292: case '*':
1.204 schwarze 2293: *res *= operand2;
2294: break;
1.207 schwarze 2295: case '/':
1.244 schwarze 2296: if (operand2 == 0) {
1.235 schwarze 2297: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2298: r->parse, ln, *pos, v);
2299: *res = 0;
2300: break;
2301: }
1.204 schwarze 2302: *res /= operand2;
2303: break;
1.207 schwarze 2304: case '%':
1.244 schwarze 2305: if (operand2 == 0) {
2306: mandoc_msg(MANDOCERR_DIVZERO,
2307: r->parse, ln, *pos, v);
2308: *res = 0;
2309: break;
2310: }
1.204 schwarze 2311: *res %= operand2;
2312: break;
1.207 schwarze 2313: case '<':
1.204 schwarze 2314: *res = *res < operand2;
2315: break;
1.207 schwarze 2316: case '>':
1.204 schwarze 2317: *res = *res > operand2;
2318: break;
1.207 schwarze 2319: case 'l':
1.204 schwarze 2320: *res = *res <= operand2;
2321: break;
1.207 schwarze 2322: case 'g':
1.204 schwarze 2323: *res = *res >= operand2;
2324: break;
1.207 schwarze 2325: case '=':
1.204 schwarze 2326: *res = *res == operand2;
2327: break;
1.207 schwarze 2328: case '!':
1.204 schwarze 2329: *res = *res != operand2;
2330: break;
1.207 schwarze 2331: case '&':
1.204 schwarze 2332: *res = *res && operand2;
2333: break;
1.207 schwarze 2334: case ':':
1.204 schwarze 2335: *res = *res || operand2;
2336: break;
1.207 schwarze 2337: case 'i':
1.204 schwarze 2338: if (operand2 < *res)
2339: *res = operand2;
2340: break;
1.207 schwarze 2341: case 'a':
1.204 schwarze 2342: if (operand2 > *res)
2343: *res = operand2;
2344: break;
2345: default:
2346: abort();
2347: }
2348: }
1.277 schwarze 2349: return 1;
1.204 schwarze 2350: }
2351:
1.266 schwarze 2352: /* --- register management ------------------------------------------------ */
2353:
1.180 schwarze 2354: void
1.187 schwarze 2355: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2356: {
1.180 schwarze 2357: struct roffreg *reg;
2358:
2359: /* Search for an existing register with the same name. */
2360: reg = r->regtab;
2361:
2362: while (reg && strcmp(name, reg->key.p))
2363: reg = reg->next;
1.147 kristaps 2364:
1.180 schwarze 2365: if (NULL == reg) {
2366: /* Create a new register. */
2367: reg = mandoc_malloc(sizeof(struct roffreg));
2368: reg->key.p = mandoc_strdup(name);
2369: reg->key.sz = strlen(name);
1.187 schwarze 2370: reg->val = 0;
1.180 schwarze 2371: reg->next = r->regtab;
2372: r->regtab = reg;
2373: }
2374:
1.187 schwarze 2375: if ('+' == sign)
2376: reg->val += val;
2377: else if ('-' == sign)
2378: reg->val -= val;
2379: else
2380: reg->val = val;
1.147 kristaps 2381: }
2382:
1.192 schwarze 2383: /*
2384: * Handle some predefined read-only number registers.
2385: * For now, return -1 if the requested register is not predefined;
2386: * in case a predefined read-only register having the value -1
2387: * were to turn up, another special value would have to be chosen.
2388: */
2389: static int
1.273 schwarze 2390: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2391: {
2392:
2393: switch (*name) {
1.273 schwarze 2394: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2395: return r->argc;
1.207 schwarze 2396: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2397: return 0;
1.207 schwarze 2398: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2399: return 1;
1.207 schwarze 2400: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2401: return 24;
1.207 schwarze 2402: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2403: return 0;
1.207 schwarze 2404: case 'T': /* Some output device is always defined. */
1.277 schwarze 2405: return 1;
1.207 schwarze 2406: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2407: return 40;
1.192 schwarze 2408: default:
1.277 schwarze 2409: return -1;
1.192 schwarze 2410: }
2411: }
2412:
1.181 schwarze 2413: int
1.180 schwarze 2414: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2415: {
1.180 schwarze 2416: struct roffreg *reg;
1.192 schwarze 2417: int val;
2418:
2419: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2420: val = roff_getregro(r, name + 1);
1.192 schwarze 2421: if (-1 != val)
1.277 schwarze 2422: return val;
1.192 schwarze 2423: }
1.180 schwarze 2424:
2425: for (reg = r->regtab; reg; reg = reg->next)
2426: if (0 == strcmp(name, reg->key.p))
1.277 schwarze 2427: return reg->val;
1.181 schwarze 2428:
1.277 schwarze 2429: return 0;
1.181 schwarze 2430: }
2431:
2432: static int
2433: roff_getregn(const struct roff *r, const char *name, size_t len)
2434: {
2435: struct roffreg *reg;
1.192 schwarze 2436: int val;
2437:
2438: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2439: val = roff_getregro(r, name + 1);
1.192 schwarze 2440: if (-1 != val)
1.277 schwarze 2441: return val;
1.192 schwarze 2442: }
1.181 schwarze 2443:
2444: for (reg = r->regtab; reg; reg = reg->next)
2445: if (len == reg->key.sz &&
2446: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2447: return reg->val;
1.271 schwarze 2448:
1.277 schwarze 2449: return 0;
1.271 schwarze 2450: }
2451:
2452: static int
2453: roff_hasregn(const struct roff *r, const char *name, size_t len)
2454: {
2455: struct roffreg *reg;
2456: int val;
2457:
2458: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2459: val = roff_getregro(r, name + 1);
1.271 schwarze 2460: if (-1 != val)
1.277 schwarze 2461: return 1;
1.271 schwarze 2462: }
2463:
2464: for (reg = r->regtab; reg; reg = reg->next)
2465: if (len == reg->key.sz &&
2466: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2467: return 1;
1.147 kristaps 2468:
1.277 schwarze 2469: return 0;
1.147 kristaps 2470: }
2471:
1.180 schwarze 2472: static void
2473: roff_freereg(struct roffreg *reg)
1.147 kristaps 2474: {
1.180 schwarze 2475: struct roffreg *old_reg;
1.147 kristaps 2476:
1.180 schwarze 2477: while (NULL != reg) {
2478: free(reg->key.p);
2479: old_reg = reg;
2480: reg = reg->next;
2481: free(old_reg);
2482: }
1.147 kristaps 2483: }
1.92 schwarze 2484:
2485: static enum rofferr
1.89 kristaps 2486: roff_nr(ROFF_ARGS)
1.83 schwarze 2487: {
1.212 schwarze 2488: char *key, *val;
2489: size_t keysz;
1.138 kristaps 2490: int iv;
1.187 schwarze 2491: char sign;
1.89 kristaps 2492:
1.238 schwarze 2493: key = val = buf->buf + pos;
2494: if (*key == '\0')
1.277 schwarze 2495: return ROFF_IGN;
1.212 schwarze 2496:
2497: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2498: if (key[keysz] == '\\')
1.277 schwarze 2499: return ROFF_IGN;
1.212 schwarze 2500: key[keysz] = '\0';
1.89 kristaps 2501:
1.187 schwarze 2502: sign = *val;
1.238 schwarze 2503: if (sign == '+' || sign == '-')
1.187 schwarze 2504: val++;
2505:
1.261 schwarze 2506: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2507: roff_setreg(r, key, iv, sign);
1.109 kristaps 2508:
1.277 schwarze 2509: return ROFF_IGN;
1.203 schwarze 2510: }
2511:
2512: static enum rofferr
2513: roff_rr(ROFF_ARGS)
2514: {
2515: struct roffreg *reg, **prev;
1.212 schwarze 2516: char *name, *cp;
2517: size_t namesz;
1.203 schwarze 2518:
1.238 schwarze 2519: name = cp = buf->buf + pos;
2520: if (*name == '\0')
1.277 schwarze 2521: return ROFF_IGN;
1.212 schwarze 2522: namesz = roff_getname(r, &cp, ln, pos);
2523: name[namesz] = '\0';
1.203 schwarze 2524:
2525: prev = &r->regtab;
2526: while (1) {
2527: reg = *prev;
1.238 schwarze 2528: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2529: break;
2530: prev = ®->next;
2531: }
1.238 schwarze 2532: if (reg != NULL) {
1.203 schwarze 2533: *prev = reg->next;
2534: free(reg->key.p);
2535: free(reg);
2536: }
1.277 schwarze 2537: return ROFF_IGN;
1.122 schwarze 2538: }
2539:
1.266 schwarze 2540: /* --- handler functions for roff requests -------------------------------- */
2541:
1.122 schwarze 2542: static enum rofferr
2543: roff_rm(ROFF_ARGS)
2544: {
2545: const char *name;
2546: char *cp;
1.212 schwarze 2547: size_t namesz;
1.122 schwarze 2548:
1.238 schwarze 2549: cp = buf->buf + pos;
2550: while (*cp != '\0') {
1.212 schwarze 2551: name = cp;
1.238 schwarze 2552: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2553: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.238 schwarze 2554: if (name[namesz] == '\\')
1.212 schwarze 2555: break;
1.122 schwarze 2556: }
1.277 schwarze 2557: return ROFF_IGN;
1.178 schwarze 2558: }
2559:
2560: static enum rofferr
2561: roff_it(ROFF_ARGS)
2562: {
2563: int iv;
2564:
2565: /* Parse the number of lines. */
1.261 schwarze 2566:
2567: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2568: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2569: ln, ppos, buf->buf + 1);
1.277 schwarze 2570: return ROFF_IGN;
1.178 schwarze 2571: }
2572:
1.262 schwarze 2573: while (isspace((unsigned char)buf->buf[pos]))
2574: pos++;
2575:
2576: /*
2577: * Arm the input line trap.
2578: * Special-casing "an-trap" is an ugly workaround to cope
2579: * with DocBook stupidly fiddling with man(7) internals.
2580: */
1.261 schwarze 2581:
1.178 schwarze 2582: roffit_lines = iv;
1.262 schwarze 2583: roffit_macro = mandoc_strdup(iv != 1 ||
2584: strcmp(buf->buf + pos, "an-trap") ?
2585: buf->buf + pos : "br");
1.277 schwarze 2586: return ROFF_IGN;
1.175 schwarze 2587: }
2588:
2589: static enum rofferr
2590: roff_Dd(ROFF_ARGS)
2591: {
2592: const char *const *cp;
2593:
1.227 schwarze 2594: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.175 schwarze 2595: for (cp = __mdoc_reserved; *cp; cp++)
2596: roff_setstr(r, *cp, NULL, 0);
2597:
1.227 schwarze 2598: if (r->format == 0)
2599: r->format = MPARSE_MDOC;
2600:
1.277 schwarze 2601: return ROFF_CONT;
1.175 schwarze 2602: }
2603:
2604: static enum rofferr
2605: roff_TH(ROFF_ARGS)
2606: {
2607: const char *const *cp;
2608:
1.227 schwarze 2609: if ((r->options & MPARSE_QUICK) == 0)
1.175 schwarze 2610: for (cp = __man_reserved; *cp; cp++)
2611: roff_setstr(r, *cp, NULL, 0);
2612:
1.227 schwarze 2613: if (r->format == 0)
2614: r->format = MPARSE_MAN;
2615:
1.277 schwarze 2616: return ROFF_CONT;
1.109 kristaps 2617: }
2618:
2619: static enum rofferr
2620: roff_TE(ROFF_ARGS)
2621: {
2622:
2623: if (NULL == r->tbl)
1.221 schwarze 2624: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2625: ln, ppos, "TE");
1.258 schwarze 2626: else if ( ! tbl_end(&r->tbl)) {
2627: free(buf->buf);
2628: buf->buf = mandoc_strdup(".sp");
2629: buf->sz = 4;
1.277 schwarze 2630: return ROFF_REPARSE;
1.258 schwarze 2631: }
1.277 schwarze 2632: return ROFF_IGN;
1.112 kristaps 2633: }
2634:
2635: static enum rofferr
2636: roff_T_(ROFF_ARGS)
2637: {
2638:
2639: if (NULL == r->tbl)
1.221 schwarze 2640: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2641: ln, ppos, "T&");
1.112 kristaps 2642: else
1.296 ! schwarze 2643: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 2644:
1.277 schwarze 2645: return ROFF_IGN;
1.109 kristaps 2646: }
2647:
1.230 schwarze 2648: /*
2649: * Handle in-line equation delimiters.
2650: */
2651: static enum rofferr
1.238 schwarze 2652: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2653: {
1.233 schwarze 2654: char *cp1, *cp2;
2655: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2656:
1.230 schwarze 2657: /*
2658: * Outside equations, look for an opening delimiter.
2659: * If we are inside an equation, we already know it is
2660: * in-line, or this function wouldn't have been called;
2661: * so look for a closing delimiter.
2662: */
2663:
1.238 schwarze 2664: cp1 = buf->buf + pos;
1.230 schwarze 2665: cp2 = strchr(cp1, r->eqn == NULL ?
2666: r->last_eqn->odelim : r->last_eqn->cdelim);
2667: if (cp2 == NULL)
1.277 schwarze 2668: return ROFF_CONT;
1.230 schwarze 2669:
1.233 schwarze 2670: *cp2++ = '\0';
2671: bef_pr = bef_nl = aft_nl = aft_pr = "";
2672:
2673: /* Handle preceding text, protecting whitespace. */
2674:
1.238 schwarze 2675: if (*buf->buf != '\0') {
1.233 schwarze 2676: if (r->eqn == NULL)
2677: bef_pr = "\\&";
2678: bef_nl = "\n";
2679: }
2680:
2681: /*
2682: * Prepare replacing the delimiter with an equation macro
2683: * and drop leading white space from the equation.
2684: */
1.230 schwarze 2685:
1.233 schwarze 2686: if (r->eqn == NULL) {
2687: while (*cp2 == ' ')
2688: cp2++;
2689: mac = ".EQ";
2690: } else
2691: mac = ".EN";
2692:
2693: /* Handle following text, protecting whitespace. */
2694:
2695: if (*cp2 != '\0') {
2696: aft_nl = "\n";
2697: if (r->eqn != NULL)
2698: aft_pr = "\\&";
2699: }
2700:
2701: /* Do the actual replacement. */
2702:
1.238 schwarze 2703: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2704: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2705: free(buf->buf);
2706: buf->buf = cp1;
1.230 schwarze 2707:
2708: /* Toggle the in-line state of the eqn subsystem. */
2709:
2710: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2711: return ROFF_REPARSE;
1.151 kristaps 2712: }
2713:
1.235 schwarze 2714: static enum rofferr
2715: roff_EQ(ROFF_ARGS)
1.125 kristaps 2716: {
1.151 kristaps 2717: struct eqn_node *e;
1.125 kristaps 2718:
1.238 schwarze 2719: assert(r->eqn == NULL);
1.235 schwarze 2720: e = eqn_alloc(ppos, ln, r->parse);
1.125 kristaps 2721:
1.230 schwarze 2722: if (r->last_eqn) {
1.125 kristaps 2723: r->last_eqn->next = e;
1.230 schwarze 2724: e->delim = r->last_eqn->delim;
2725: e->odelim = r->last_eqn->odelim;
2726: e->cdelim = r->last_eqn->cdelim;
2727: } else
1.125 kristaps 2728: r->first_eqn = r->last_eqn = e;
2729:
2730: r->eqn = r->last_eqn = e;
1.151 kristaps 2731:
1.238 schwarze 2732: if (buf->buf[pos] != '\0')
1.235 schwarze 2733: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2734: ".EQ %s", buf->buf + pos);
1.151 kristaps 2735:
1.277 schwarze 2736: return ROFF_IGN;
1.125 kristaps 2737: }
2738:
2739: static enum rofferr
2740: roff_EN(ROFF_ARGS)
2741: {
2742:
1.221 schwarze 2743: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.277 schwarze 2744: return ROFF_IGN;
1.125 kristaps 2745: }
2746:
2747: static enum rofferr
1.109 kristaps 2748: roff_TS(ROFF_ARGS)
2749: {
1.176 schwarze 2750: struct tbl_node *tbl;
1.89 kristaps 2751:
1.115 kristaps 2752: if (r->tbl) {
1.221 schwarze 2753: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2754: ln, ppos, "TS breaks TS");
1.151 kristaps 2755: tbl_end(&r->tbl);
1.115 kristaps 2756: }
1.83 schwarze 2757:
1.176 schwarze 2758: tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2759:
2760: if (r->last_tbl)
1.176 schwarze 2761: r->last_tbl->next = tbl;
1.113 kristaps 2762: else
1.176 schwarze 2763: r->first_tbl = r->last_tbl = tbl;
1.113 kristaps 2764:
1.176 schwarze 2765: r->tbl = r->last_tbl = tbl;
1.277 schwarze 2766: return ROFF_IGN;
1.251 schwarze 2767: }
2768:
2769: static enum rofferr
1.296 ! schwarze 2770: roff_br(ROFF_ARGS)
1.251 schwarze 2771: {
1.296 ! schwarze 2772: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
! 2773: if (buf->buf[pos] != '\0')
! 2774: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
! 2775: "%s %s", roff_name[tok], buf->buf + pos);
! 2776: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
! 2777: r->man->next = ROFF_NEXT_SIBLING;
! 2778: return ROFF_IGN;
1.92 schwarze 2779: }
2780:
1.105 kristaps 2781: static enum rofferr
1.174 kristaps 2782: roff_cc(ROFF_ARGS)
2783: {
2784: const char *p;
2785:
1.238 schwarze 2786: p = buf->buf + pos;
1.174 kristaps 2787:
1.238 schwarze 2788: if (*p == '\0' || (r->control = *p++) == '.')
1.174 kristaps 2789: r->control = 0;
2790:
1.238 schwarze 2791: if (*p != '\0')
1.260 schwarze 2792: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2793: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 2794:
1.277 schwarze 2795: return ROFF_IGN;
1.174 kristaps 2796: }
2797:
2798: static enum rofferr
1.164 kristaps 2799: roff_tr(ROFF_ARGS)
2800: {
2801: const char *p, *first, *second;
2802: size_t fsz, ssz;
2803: enum mandoc_esc esc;
2804:
1.238 schwarze 2805: p = buf->buf + pos;
1.164 kristaps 2806:
1.238 schwarze 2807: if (*p == '\0') {
1.260 schwarze 2808: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 2809: return ROFF_IGN;
1.164 kristaps 2810: }
2811:
1.238 schwarze 2812: while (*p != '\0') {
1.164 kristaps 2813: fsz = ssz = 1;
2814:
2815: first = p++;
1.238 schwarze 2816: if (*first == '\\') {
1.164 kristaps 2817: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2818: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2819: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2820: ln, (int)(p - buf->buf), first);
1.277 schwarze 2821: return ROFF_IGN;
1.164 kristaps 2822: }
2823: fsz = (size_t)(p - first);
2824: }
2825:
2826: second = p++;
1.238 schwarze 2827: if (*second == '\\') {
1.164 kristaps 2828: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2829: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2830: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2831: ln, (int)(p - buf->buf), second);
1.277 schwarze 2832: return ROFF_IGN;
1.164 kristaps 2833: }
2834: ssz = (size_t)(p - second);
1.238 schwarze 2835: } else if (*second == '\0') {
1.260 schwarze 2836: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2837: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 2838: second = " ";
1.165 kristaps 2839: p--;
1.164 kristaps 2840: }
2841:
1.167 kristaps 2842: if (fsz > 1) {
1.207 schwarze 2843: roff_setstrn(&r->xmbtab, first, fsz,
2844: second, ssz, 0);
1.167 kristaps 2845: continue;
2846: }
2847:
1.238 schwarze 2848: if (r->xtab == NULL)
1.207 schwarze 2849: r->xtab = mandoc_calloc(128,
2850: sizeof(struct roffstr));
1.167 kristaps 2851:
2852: free(r->xtab[(int)*first].p);
2853: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
2854: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 2855: }
2856:
1.277 schwarze 2857: return ROFF_IGN;
1.164 kristaps 2858: }
2859:
2860: static enum rofferr
1.105 kristaps 2861: roff_so(ROFF_ARGS)
2862: {
1.249 schwarze 2863: char *name, *cp;
1.105 kristaps 2864:
1.238 schwarze 2865: name = buf->buf + pos;
1.224 schwarze 2866: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 2867:
2868: /*
2869: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
2870: * opening anything that's not in our cwd or anything beneath
2871: * it. Thus, explicitly disallow traversing up the file-system
2872: * or using absolute paths.
2873: */
2874:
1.238 schwarze 2875: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 2876: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
2877: ".so %s", name);
1.249 schwarze 2878: buf->sz = mandoc_asprintf(&cp,
2879: ".sp\nSee the file %s.\n.sp", name) + 1;
2880: free(buf->buf);
2881: buf->buf = cp;
2882: *offs = 0;
1.277 schwarze 2883: return ROFF_REPARSE;
1.105 kristaps 2884: }
2885:
2886: *offs = pos;
1.277 schwarze 2887: return ROFF_SO;
1.105 kristaps 2888: }
1.92 schwarze 2889:
1.266 schwarze 2890: /* --- user defined strings and macros ------------------------------------ */
2891:
1.106 kristaps 2892: static enum rofferr
2893: roff_userdef(ROFF_ARGS)
1.99 kristaps 2894: {
1.263 schwarze 2895: const char *arg[9], *ap;
1.106 kristaps 2896: char *cp, *n1, *n2;
1.292 schwarze 2897: int expand_count, i, ib, ie;
1.263 schwarze 2898: size_t asz, rsz;
1.106 kristaps 2899:
2900: /*
2901: * Collect pointers to macro argument strings
1.188 schwarze 2902: * and NUL-terminate them.
1.106 kristaps 2903: */
1.263 schwarze 2904:
1.273 schwarze 2905: r->argc = 0;
1.238 schwarze 2906: cp = buf->buf + pos;
1.273 schwarze 2907: for (i = 0; i < 9; i++) {
2908: if (*cp == '\0')
2909: arg[i] = "";
2910: else {
2911: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
2912: r->argc = i + 1;
2913: }
2914: }
1.99 kristaps 2915:
1.106 kristaps 2916: /*
2917: * Expand macro arguments.
1.99 kristaps 2918: */
1.263 schwarze 2919:
2920: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 2921: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 2922: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 2923: expand_count = 0;
1.263 schwarze 2924: while (*cp != '\0') {
2925:
2926: /* Scan ahead for the next argument invocation. */
2927:
2928: if (*cp++ != '\\')
2929: continue;
2930: if (*cp++ != '$')
2931: continue;
1.274 schwarze 2932: if (*cp == '*') { /* \\$* inserts all arguments */
2933: ib = 0;
2934: ie = r->argc - 1;
2935: } else { /* \\$1 .. \\$9 insert one argument */
2936: ib = ie = *cp - '1';
2937: if (ib < 0 || ib > 8)
2938: continue;
2939: }
1.263 schwarze 2940: cp -= 2;
1.292 schwarze 2941:
2942: /*
2943: * Prevent infinite recursion.
2944: */
2945:
2946: if (cp >= n2)
2947: expand_count = 1;
2948: else if (++expand_count > EXPAND_LIMIT) {
2949: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
2950: ln, (int)(cp - n1), NULL);
1.293 schwarze 2951: free(buf->buf);
2952: buf->buf = n1;
1.292 schwarze 2953: return ROFF_IGN;
2954: }
1.263 schwarze 2955:
2956: /*
2957: * Determine the size of the expanded argument,
2958: * taking escaping of quotes into account.
2959: */
2960:
1.274 schwarze 2961: asz = ie > ib ? ie - ib : 0; /* for blanks */
2962: for (i = ib; i <= ie; i++) {
2963: for (ap = arg[i]; *ap != '\0'; ap++) {
2964: asz++;
2965: if (*ap == '"')
2966: asz += 3;
2967: }
1.263 schwarze 2968: }
2969: if (asz != 3) {
2970:
2971: /*
2972: * Determine the size of the rest of the
2973: * unexpanded macro, including the NUL.
2974: */
2975:
2976: rsz = buf->sz - (cp - n1) - 3;
2977:
2978: /*
2979: * When shrinking, move before
2980: * releasing the storage.
2981: */
2982:
2983: if (asz < 3)
2984: memmove(cp + asz, cp + 3, rsz);
2985:
2986: /*
2987: * Resize the storage for the macro
2988: * and readjust the parse pointer.
2989: */
2990:
2991: buf->sz += asz - 3;
2992: n2 = mandoc_realloc(n1, buf->sz);
2993: cp = n2 + (cp - n1);
2994: n1 = n2;
2995:
2996: /*
2997: * When growing, make room
2998: * for the expanded argument.
2999: */
3000:
3001: if (asz > 3)
3002: memmove(cp + asz, cp + 3, rsz);
3003: }
3004:
3005: /* Copy the expanded argument, escaping quotes. */
3006:
3007: n2 = cp;
1.274 schwarze 3008: for (i = ib; i <= ie; i++) {
3009: for (ap = arg[i]; *ap != '\0'; ap++) {
3010: if (*ap == '"') {
3011: memcpy(n2, "\\(dq", 4);
3012: n2 += 4;
3013: } else
3014: *n2++ = *ap;
3015: }
3016: if (i < ie)
3017: *n2++ = ' ';
1.106 kristaps 3018: }
1.99 kristaps 3019: }
3020:
1.106 kristaps 3021: /*
3022: * Replace the macro invocation
3023: * by the expanded macro.
3024: */
1.263 schwarze 3025:
1.238 schwarze 3026: free(buf->buf);
3027: buf->buf = n1;
1.248 schwarze 3028: *offs = 0;
1.106 kristaps 3029:
1.277 schwarze 3030: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3031: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3032: }
1.121 schwarze 3033:
1.212 schwarze 3034: static size_t
1.121 schwarze 3035: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3036: {
3037: char *name, *cp;
1.212 schwarze 3038: size_t namesz;
1.121 schwarze 3039:
3040: name = *cpp;
3041: if ('\0' == *name)
1.277 schwarze 3042: return 0;
1.121 schwarze 3043:
1.212 schwarze 3044: /* Read until end of name and terminate it with NUL. */
3045: for (cp = name; 1; cp++) {
3046: if ('\0' == *cp || ' ' == *cp) {
3047: namesz = cp - name;
3048: break;
3049: }
1.121 schwarze 3050: if ('\\' != *cp)
3051: continue;
1.215 schwarze 3052: namesz = cp - name;
3053: if ('{' == cp[1] || '}' == cp[1])
3054: break;
1.121 schwarze 3055: cp++;
3056: if ('\\' == *cp)
3057: continue;
1.224 schwarze 3058: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3059: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3060: mandoc_escape((const char **)&cp, NULL, NULL);
3061: break;
1.121 schwarze 3062: }
3063:
3064: /* Read past spaces. */
3065: while (' ' == *cp)
3066: cp++;
3067:
3068: *cpp = cp;
1.277 schwarze 3069: return namesz;
1.121 schwarze 3070: }
3071:
1.106 kristaps 3072: /*
3073: * Store *string into the user-defined string called *name.
3074: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3075: * append == 0: replace mode
3076: * append == 1: single-line append mode
3077: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3078: */
1.94 kristaps 3079: static void
1.106 kristaps 3080: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3081: int append)
1.92 schwarze 3082: {
1.164 kristaps 3083:
3084: roff_setstrn(&r->strtab, name, strlen(name), string,
1.207 schwarze 3085: string ? strlen(string) : 0, append);
1.164 kristaps 3086: }
3087:
3088: static void
1.166 kristaps 3089: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3090: const char *string, size_t stringsz, int append)
1.164 kristaps 3091: {
1.166 kristaps 3092: struct roffkv *n;
1.164 kristaps 3093: char *c;
3094: int i;
3095: size_t oldch, newch;
1.92 schwarze 3096:
1.106 kristaps 3097: /* Search for an existing string with the same name. */
1.164 kristaps 3098: n = *r;
3099:
1.211 schwarze 3100: while (n && (namesz != n->key.sz ||
3101: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3102: n = n->next;
1.94 kristaps 3103:
3104: if (NULL == n) {
1.106 kristaps 3105: /* Create a new string table entry. */
1.166 kristaps 3106: n = mandoc_malloc(sizeof(struct roffkv));
3107: n->key.p = mandoc_strndup(name, namesz);
3108: n->key.sz = namesz;
3109: n->val.p = NULL;
3110: n->val.sz = 0;
1.164 kristaps 3111: n->next = *r;
3112: *r = n;
1.193 schwarze 3113: } else if (0 == append) {
1.166 kristaps 3114: free(n->val.p);
3115: n->val.p = NULL;
3116: n->val.sz = 0;
1.106 kristaps 3117: }
3118:
3119: if (NULL == string)
3120: return;
3121:
3122: /*
3123: * One additional byte for the '\n' in multiline mode,
3124: * and one for the terminating '\0'.
3125: */
1.193 schwarze 3126: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3127:
1.166 kristaps 3128: if (NULL == n->val.p) {
3129: n->val.p = mandoc_malloc(newch);
3130: *n->val.p = '\0';
1.106 kristaps 3131: oldch = 0;
3132: } else {
1.166 kristaps 3133: oldch = n->val.sz;
3134: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3135: }
3136:
3137: /* Skip existing content in the destination buffer. */
1.166 kristaps 3138: c = n->val.p + (int)oldch;
1.106 kristaps 3139:
3140: /* Append new content to the destination buffer. */
1.164 kristaps 3141: i = 0;
3142: while (i < (int)stringsz) {
1.106 kristaps 3143: /*
3144: * Rudimentary roff copy mode:
3145: * Handle escaped backslashes.
3146: */
1.164 kristaps 3147: if ('\\' == string[i] && '\\' == string[i + 1])
3148: i++;
3149: *c++ = string[i++];
1.106 kristaps 3150: }
1.94 kristaps 3151:
1.106 kristaps 3152: /* Append terminating bytes. */
1.193 schwarze 3153: if (1 < append)
1.106 kristaps 3154: *c++ = '\n';
1.163 kristaps 3155:
1.106 kristaps 3156: *c = '\0';
1.166 kristaps 3157: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3158: }
3159:
1.94 kristaps 3160: static const char *
3161: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.92 schwarze 3162: {
1.166 kristaps 3163: const struct roffkv *n;
1.191 schwarze 3164: int i;
1.92 schwarze 3165:
1.164 kristaps 3166: for (n = r->strtab; n; n = n->next)
1.207 schwarze 3167: if (0 == strncmp(name, n->key.p, len) &&
3168: '\0' == n->key.p[(int)len])
1.277 schwarze 3169: return n->val.p;
1.191 schwarze 3170:
3171: for (i = 0; i < PREDEFS_MAX; i++)
3172: if (0 == strncmp(name, predefs[i].name, len) &&
3173: '\0' == predefs[i].name[(int)len])
1.277 schwarze 3174: return predefs[i].str;
1.94 kristaps 3175:
1.277 schwarze 3176: return NULL;
1.92 schwarze 3177: }
3178:
1.94 kristaps 3179: static void
1.167 kristaps 3180: roff_freestr(struct roffkv *r)
1.92 schwarze 3181: {
1.166 kristaps 3182: struct roffkv *n, *nn;
1.92 schwarze 3183:
1.167 kristaps 3184: for (n = r; n; n = nn) {
1.166 kristaps 3185: free(n->key.p);
3186: free(n->val.p);
1.92 schwarze 3187: nn = n->next;
3188: free(n);
3189: }
1.114 kristaps 3190: }
1.266 schwarze 3191:
3192: /* --- accessors and utility functions ------------------------------------ */
1.114 kristaps 3193:
3194: const struct tbl_span *
3195: roff_span(const struct roff *r)
3196: {
1.207 schwarze 3197:
1.277 schwarze 3198: return r->tbl ? tbl_span(r->tbl) : NULL;
1.125 kristaps 3199: }
3200:
3201: const struct eqn *
3202: roff_eqn(const struct roff *r)
3203: {
1.207 schwarze 3204:
1.277 schwarze 3205: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.164 kristaps 3206: }
3207:
3208: /*
3209: * Duplicate an input string, making the appropriate character
3210: * conversations (as stipulated by `tr') along the way.
3211: * Returns a heap-allocated string with all the replacements made.
3212: */
3213: char *
3214: roff_strdup(const struct roff *r, const char *p)
3215: {
1.166 kristaps 3216: const struct roffkv *cp;
1.164 kristaps 3217: char *res;
3218: const char *pp;
3219: size_t ssz, sz;
3220: enum mandoc_esc esc;
3221:
1.167 kristaps 3222: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3223: return mandoc_strdup(p);
1.164 kristaps 3224: else if ('\0' == *p)
1.277 schwarze 3225: return mandoc_strdup("");
1.164 kristaps 3226:
3227: /*
3228: * Step through each character looking for term matches
3229: * (remember that a `tr' can be invoked with an escape, which is
3230: * a glyph but the escape is multi-character).
3231: * We only do this if the character hash has been initialised
3232: * and the string is >0 length.
3233: */
3234:
3235: res = NULL;
3236: ssz = 0;
3237:
3238: while ('\0' != *p) {
1.289 schwarze 3239: assert((unsigned int)*p < 128);
3240: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3241: sz = r->xtab[(int)*p].sz;
3242: res = mandoc_realloc(res, ssz + sz + 1);
3243: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3244: ssz += sz;
3245: p++;
3246: continue;
3247: } else if ('\\' != *p) {
3248: res = mandoc_realloc(res, ssz + 2);
3249: res[ssz++] = *p++;
3250: continue;
3251: }
3252:
1.164 kristaps 3253: /* Search for term matches. */
1.167 kristaps 3254: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3255: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3256: break;
3257:
3258: if (NULL != cp) {
3259: /*
3260: * A match has been found.
3261: * Append the match to the array and move
3262: * forward by its keysize.
3263: */
1.207 schwarze 3264: res = mandoc_realloc(res,
3265: ssz + cp->val.sz + 1);
1.166 kristaps 3266: memcpy(res + ssz, cp->val.p, cp->val.sz);
3267: ssz += cp->val.sz;
3268: p += (int)cp->key.sz;
1.164 kristaps 3269: continue;
3270: }
3271:
1.167 kristaps 3272: /*
3273: * Handle escapes carefully: we need to copy
3274: * over just the escape itself, or else we might
3275: * do replacements within the escape itself.
3276: * Make sure to pass along the bogus string.
3277: */
3278: pp = p++;
3279: esc = mandoc_escape(&p, NULL, NULL);
3280: if (ESCAPE_ERROR == esc) {
3281: sz = strlen(pp);
1.164 kristaps 3282: res = mandoc_realloc(res, ssz + sz + 1);
3283: memcpy(res + ssz, pp, sz);
1.167 kristaps 3284: break;
1.164 kristaps 3285: }
1.207 schwarze 3286: /*
3287: * We bail out on bad escapes.
1.167 kristaps 3288: * No need to warn: we already did so when
3289: * roff_res() was called.
3290: */
3291: sz = (int)(p - pp);
3292: res = mandoc_realloc(res, ssz + sz + 1);
3293: memcpy(res + ssz, pp, sz);
3294: ssz += sz;
1.164 kristaps 3295: }
3296:
3297: res[(int)ssz] = '\0';
1.277 schwarze 3298: return res;
1.227 schwarze 3299: }
3300:
3301: int
3302: roff_getformat(const struct roff *r)
3303: {
3304:
1.277 schwarze 3305: return r->format;
1.174 kristaps 3306: }
3307:
3308: /*
1.207 schwarze 3309: * Find out whether a line is a macro line or not.
1.174 kristaps 3310: * If it is, adjust the current position and return one; if it isn't,
3311: * return zero and don't change the current position.
3312: * If the control character has been set with `.cc', then let that grain
3313: * precedence.
3314: * This is slighly contrary to groff, where using the non-breaking
3315: * control character when `cc' has been invoked will cause the
3316: * non-breaking macro contents to be printed verbatim.
3317: */
3318: int
3319: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3320: {
3321: int pos;
3322:
3323: pos = *ppos;
3324:
3325: if (0 != r->control && cp[pos] == r->control)
3326: pos++;
3327: else if (0 != r->control)
1.277 schwarze 3328: return 0;
1.174 kristaps 3329: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3330: pos += 2;
3331: else if ('.' == cp[pos] || '\'' == cp[pos])
3332: pos++;
3333: else
1.277 schwarze 3334: return 0;
1.174 kristaps 3335:
3336: while (' ' == cp[pos] || '\t' == cp[pos])
3337: pos++;
3338:
3339: *ppos = pos;
1.277 schwarze 3340: return 1;
1.74 kristaps 3341: }
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