Annotation of src/usr.bin/mandoc/roff.c, Revision 1.168
1.168 ! schwarze 1: /* $OpenBSD: roff.c,v 1.167 2017/04/29 12:43:55 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.159 schwarze 4: * Copyright (c) 2010-2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 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.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.167 schwarze 23: #include <stddef.h>
24: #include <stdint.h>
1.51 schwarze 25: #include <stdio.h>
1.1 schwarze 26: #include <stdlib.h>
27: #include <string.h>
28:
29: #include "mandoc.h"
1.74 schwarze 30: #include "mandoc_aux.h"
1.167 schwarze 31: #include "mandoc_ohash.h"
1.137 schwarze 32: #include "roff.h"
1.98 daniel 33: #include "libmandoc.h"
1.138 schwarze 34: #include "roff_int.h"
1.27 schwarze 35: #include "libroff.h"
1.2 schwarze 36:
1.43 schwarze 37: /* Maximum number of string expansions per line, to break infinite loops. */
38: #define EXPAND_LIMIT 1000
39:
1.138 schwarze 40: /* --- data types --------------------------------------------------------- */
41:
1.41 schwarze 42: /*
1.42 schwarze 43: * An incredibly-simple string buffer.
44: */
1.8 schwarze 45: struct roffstr {
1.42 schwarze 46: char *p; /* nil-terminated buffer */
47: size_t sz; /* saved strlen(p) */
48: };
49:
50: /*
51: * A key-value roffstr pair as part of a singly-linked list.
52: */
53: struct roffkv {
54: struct roffstr key;
55: struct roffstr val;
56: struct roffkv *next; /* next in list */
1.8 schwarze 57: };
58:
1.52 schwarze 59: /*
60: * A single number register as part of a singly-linked list.
61: */
62: struct roffreg {
63: struct roffstr key;
1.53 schwarze 64: int val;
1.52 schwarze 65: struct roffreg *next;
66: };
67:
1.167 schwarze 68: /*
69: * Association of request and macro names with token IDs.
70: */
71: struct roffreq {
72: enum roff_tok tok;
73: char name[];
74: };
75:
1.1 schwarze 76: struct roff {
1.35 schwarze 77: struct mparse *parse; /* parse point */
1.168 ! schwarze 78: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 79: struct roffnode *last; /* leaf of stack */
1.96 schwarze 80: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 81: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 82: struct roffreg *regtab; /* number registers */
1.42 schwarze 83: struct roffkv *strtab; /* user-defined strings & macros */
84: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
85: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 86: const char *current_string; /* value of last called user macro */
1.27 schwarze 87: struct tbl_node *first_tbl; /* first table parsed */
88: struct tbl_node *last_tbl; /* last table parsed */
89: struct tbl_node *tbl; /* current table being parsed */
1.32 schwarze 90: struct eqn_node *last_eqn; /* last equation parsed */
91: struct eqn_node *first_eqn; /* first equation parsed */
92: struct eqn_node *eqn; /* current equation being parsed */
1.102 schwarze 93: int eqn_inline; /* current equation is inline */
1.96 schwarze 94: int options; /* parse options */
95: int rstacksz; /* current size limit of rstack */
96: int rstackpos; /* position in rstack */
1.99 schwarze 97: int format; /* current file in mdoc or man format */
1.145 schwarze 98: int argc; /* number of args of the last macro */
1.96 schwarze 99: char control; /* control character */
1.1 schwarze 100: };
101:
102: struct roffnode {
1.166 schwarze 103: enum roff_tok tok; /* type of node */
1.1 schwarze 104: struct roffnode *parent; /* up one in stack */
105: int line; /* parse line */
106: int col; /* parse col */
1.16 schwarze 107: char *name; /* node name, e.g. macro name */
1.2 schwarze 108: char *end; /* end-rules: custom token */
109: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 110: int rule; /* current evaluation rule */
1.1 schwarze 111: };
112:
113: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 114: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 115: struct buf *buf, /* input buffer */ \
1.1 schwarze 116: int ln, /* parse line */ \
1.2 schwarze 117: int ppos, /* original pos in buffer */ \
118: int pos, /* current pos in buffer */ \
119: int *offs /* reset offset of buffer data */
1.1 schwarze 120:
121: typedef enum rofferr (*roffproc)(ROFF_ARGS);
122:
123: struct roffmac {
1.2 schwarze 124: roffproc proc; /* process new macro */
125: roffproc text; /* process as child text of macro */
126: roffproc sub; /* process as child of macro */
127: int flags;
128: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 129: };
130:
1.37 schwarze 131: struct predef {
132: const char *name; /* predefined input name */
133: const char *str; /* replacement symbol */
134: };
135:
136: #define PREDEF(__name, __str) \
137: { (__name), (__str) },
138:
1.138 schwarze 139: /* --- function prototypes ------------------------------------------------ */
140:
1.42 schwarze 141: static void roffnode_cleanscope(struct roff *);
142: static void roffnode_pop(struct roff *);
1.166 schwarze 143: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 144: const char *, int, int);
1.2 schwarze 145: static enum rofferr roff_block(ROFF_ARGS);
146: static enum rofferr roff_block_text(ROFF_ARGS);
147: static enum rofferr roff_block_sub(ROFF_ARGS);
1.168 ! schwarze 148: static enum rofferr roff_br(ROFF_ARGS);
1.2 schwarze 149: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 150: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 151: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 152: static enum rofferr roff_cond(ROFF_ARGS);
153: static enum rofferr roff_cond_text(ROFF_ARGS);
154: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 155: static enum rofferr roff_ds(ROFF_ARGS);
1.110 schwarze 156: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 157: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 158: static int roff_evalnum(struct roff *, int,
159: const char *, int *, int *, int);
160: static int roff_evalpar(struct roff *, int,
1.133 schwarze 161: const char *, int *, int *, int);
1.71 schwarze 162: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 163: static void roff_free1(struct roff *);
1.52 schwarze 164: static void roff_freereg(struct roffreg *);
1.42 schwarze 165: static void roff_freestr(struct roffkv *);
1.85 schwarze 166: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 167: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 168: static int roff_getop(const char *, int *, char *);
1.53 schwarze 169: static int roff_getregn(const struct roff *,
170: const char *, size_t);
1.145 schwarze 171: static int roff_getregro(const struct roff *,
172: const char *name);
1.80 schwarze 173: static const char *roff_getstrn(const struct roff *,
1.8 schwarze 174: const char *, size_t);
1.143 schwarze 175: static int roff_hasregn(const struct roff *,
176: const char *, size_t);
1.123 schwarze 177: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 178: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 179: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 180: static void roff_man_alloc1(struct roff_man *);
181: static void roff_man_free1(struct roff_man *);
1.6 schwarze 182: static enum rofferr roff_nr(ROFF_ARGS);
1.166 schwarze 183: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 184: int, int);
1.110 schwarze 185: static enum rofferr roff_parsetext(struct buf *, int, int *);
186: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 187: static enum rofferr roff_rm(ROFF_ARGS);
1.76 schwarze 188: static enum rofferr roff_rr(ROFF_ARGS);
1.8 schwarze 189: static void roff_setstr(struct roff *,
1.16 schwarze 190: const char *, const char *, int);
1.80 schwarze 191: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 192: size_t, const char *, size_t, int);
1.14 schwarze 193: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 194: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 195: static enum rofferr roff_Dd(ROFF_ARGS);
196: static enum rofferr roff_TH(ROFF_ARGS);
1.27 schwarze 197: static enum rofferr roff_TE(ROFF_ARGS);
198: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 199: static enum rofferr roff_EQ(ROFF_ARGS);
200: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 201: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 202: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 203: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 204:
1.138 schwarze 205: /* --- constant data ------------------------------------------------------ */
206:
1.133 schwarze 207: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
208: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
209:
1.166 schwarze 210: const char *__roff_name[MAN_MAX + 1] = {
1.168 ! schwarze 211: "br", NULL,
1.166 schwarze 212: "ab", "ad", "af", "aln",
213: "als", "am", "am1", "ami",
214: "ami1", "as", "as1", "asciify",
215: "backtrace", "bd", "bleedat", "blm",
216: "box", "boxa", "bp", "BP",
217: "break", "breakchar", "brnl", "brp",
218: "brpnl", "c2", "cc", "ce",
219: "cf", "cflags", "ch", "char",
220: "chop", "class", "close", "CL",
221: "color", "composite", "continue", "cp",
222: "cropat", "cs", "cu", "da",
223: "dch", "Dd", "de", "de1",
224: "defcolor", "dei", "dei1", "device",
225: "devicem", "di", "do", "ds",
226: "ds1", "dwh", "dt", "ec",
227: "ecr", "ecs", "el", "em",
228: "EN", "eo", "EP", "EQ",
229: "errprint", "ev", "evc", "ex",
230: "fallback", "fam", "fc", "fchar",
231: "fcolor", "fdeferlig", "feature", "fkern",
232: "fl", "flig", "fp", "fps",
233: "fschar", "fspacewidth", "fspecial", "ftr",
234: "fzoom", "gcolor", "hc", "hcode",
235: "hidechar", "hla", "hlm", "hpf",
236: "hpfa", "hpfcode", "hw", "hy",
237: "hylang", "hylen", "hym", "hypp",
238: "hys", "ie", "if", "ig",
239: "index", "it", "itc", "IX",
240: "kern", "kernafter", "kernbefore", "kernpair",
241: "lc", "lc_ctype", "lds", "length",
242: "letadj", "lf", "lg", "lhang",
243: "linetabs", "lnr", "lnrf", "lpfx",
244: "ls", "lsm", "lt", "mc",
245: "mediasize", "minss", "mk", "mso",
246: "na", "ne", "nh", "nhychar",
247: "nm", "nn", "nop", "nr",
248: "nrf", "nroff", "ns", "nx",
249: "open", "opena", "os", "output",
250: "padj", "papersize", "pc", "pev",
251: "pi", "PI", "pl", "pm",
252: "pn", "pnr", "po", "ps",
253: "psbb", "pshape", "pso", "ptr",
254: "pvs", "rchar", "rd", "recursionlimit",
255: "return", "rfschar", "rhang", "rj",
256: "rm", "rn", "rnn", "rr",
257: "rs", "rt", "schar", "sentchar",
258: "shc", "shift", "sizes", "so",
259: "spacewidth", "special", "spreadwarn", "ss",
260: "sty", "substring", "sv", "sy",
261: "T&", "ta", "tc", "TE",
262: "TH", "ti", "tkf", "tl",
263: "tm", "tm1", "tmc", "tr",
264: "track", "transchar", "trf", "trimat",
265: "trin", "trnt", "troff", "TS",
266: "uf", "ul", "unformat", "unwatch",
267: "unwatchn", "vpt", "vs", "warn",
268: "warnscale", "watch", "watchlength", "watchn",
269: "wh", "while", "write", "writec",
270: "writem", "xflag", ".", NULL,
271: "text",
272: "Dd", "Dt", "Os", "Sh",
273: "Ss", "Pp", "D1", "Dl",
274: "Bd", "Ed", "Bl", "El",
275: "It", "Ad", "An", "Ap",
276: "Ar", "Cd", "Cm", "Dv",
277: "Er", "Ev", "Ex", "Fa",
278: "Fd", "Fl", "Fn", "Ft",
279: "Ic", "In", "Li", "Nd",
280: "Nm", "Op", "Ot", "Pa",
281: "Rv", "St", "Va", "Vt",
282: "Xr", "%A", "%B", "%D",
283: "%I", "%J", "%N", "%O",
284: "%P", "%R", "%T", "%V",
285: "Ac", "Ao", "Aq", "At",
286: "Bc", "Bf", "Bo", "Bq",
287: "Bsx", "Bx", "Db", "Dc",
288: "Do", "Dq", "Ec", "Ef",
289: "Em", "Eo", "Fx", "Ms",
290: "No", "Ns", "Nx", "Ox",
291: "Pc", "Pf", "Po", "Pq",
292: "Qc", "Ql", "Qo", "Qq",
293: "Re", "Rs", "Sc", "So",
294: "Sq", "Sm", "Sx", "Sy",
295: "Tn", "Ux", "Xc", "Xo",
296: "Fo", "Fc", "Oo", "Oc",
297: "Bk", "Ek", "Bt", "Hf",
298: "Fr", "Ud", "Lb", "Lp",
299: "Lk", "Mt", "Brq", "Bro",
300: "Brc", "%C", "Es", "En",
1.168 ! schwarze 301: "Dx", "%Q", "sp",
1.166 schwarze 302: "%U", "Ta", "ll", NULL,
303: "TH", "SH", "SS", "TP",
304: "LP", "PP", "P", "IP",
305: "HP", "SM", "SB", "BI",
306: "IB", "BR", "RB", "R",
307: "B", "I", "IR", "RI",
1.168 ! schwarze 308: "sp", "nf", "fi",
1.166 schwarze 309: "RE", "RS", "DT", "UC",
310: "PD", "AT", "in", "ft",
311: "OP", "EX", "EE", "UR",
312: "UE", "ll", NULL
313: };
314: const char *const *roff_name = __roff_name;
315:
316: static struct roffmac roffs[TOKEN_NONE] = {
1.168 ! schwarze 317: { roff_br, NULL, NULL, 0 }, /* br */
! 318: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 319: { roff_unsupp, NULL, NULL, 0 }, /* ab */
320: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
321: { roff_line_ignore, NULL, NULL, 0 }, /* af */
322: { roff_unsupp, NULL, NULL, 0 }, /* aln */
323: { roff_unsupp, NULL, NULL, 0 }, /* als */
324: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
325: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
326: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
327: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
328: { roff_ds, NULL, NULL, 0 }, /* as */
329: { roff_ds, NULL, NULL, 0 }, /* as1 */
330: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
331: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
332: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
333: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
334: { roff_unsupp, NULL, NULL, 0 }, /* blm */
335: { roff_unsupp, NULL, NULL, 0 }, /* box */
336: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
337: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
338: { roff_unsupp, NULL, NULL, 0 }, /* BP */
339: { roff_unsupp, NULL, NULL, 0 }, /* break */
340: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
341: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 ! schwarze 342: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 343: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
344: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
345: { roff_cc, NULL, NULL, 0 }, /* cc */
346: { roff_line_ignore, NULL, NULL, 0 }, /* ce */
347: { roff_insec, NULL, NULL, 0 }, /* cf */
348: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
349: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
350: { roff_unsupp, NULL, NULL, 0 }, /* char */
351: { roff_unsupp, NULL, NULL, 0 }, /* chop */
352: { roff_line_ignore, NULL, NULL, 0 }, /* class */
353: { roff_insec, NULL, NULL, 0 }, /* close */
354: { roff_unsupp, NULL, NULL, 0 }, /* CL */
355: { roff_line_ignore, NULL, NULL, 0 }, /* color */
356: { roff_unsupp, NULL, NULL, 0 }, /* composite */
357: { roff_unsupp, NULL, NULL, 0 }, /* continue */
358: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
359: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
360: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
361: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
362: { roff_unsupp, NULL, NULL, 0 }, /* da */
363: { roff_unsupp, NULL, NULL, 0 }, /* dch */
364: { roff_Dd, NULL, NULL, 0 }, /* Dd */
365: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
366: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
367: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
368: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
369: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
370: { roff_unsupp, NULL, NULL, 0 }, /* device */
371: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
372: { roff_unsupp, NULL, NULL, 0 }, /* di */
373: { roff_unsupp, NULL, NULL, 0 }, /* do */
374: { roff_ds, NULL, NULL, 0 }, /* ds */
375: { roff_ds, NULL, NULL, 0 }, /* ds1 */
376: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
377: { roff_unsupp, NULL, NULL, 0 }, /* dt */
378: { roff_unsupp, NULL, NULL, 0 }, /* ec */
379: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
380: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
381: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
382: { roff_unsupp, NULL, NULL, 0 }, /* em */
383: { roff_EN, NULL, NULL, 0 }, /* EN */
384: { roff_unsupp, NULL, NULL, 0 }, /* eo */
385: { roff_unsupp, NULL, NULL, 0 }, /* EP */
386: { roff_EQ, NULL, NULL, 0 }, /* EQ */
387: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
388: { roff_unsupp, NULL, NULL, 0 }, /* ev */
389: { roff_unsupp, NULL, NULL, 0 }, /* evc */
390: { roff_unsupp, NULL, NULL, 0 }, /* ex */
391: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
392: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
393: { roff_unsupp, NULL, NULL, 0 }, /* fc */
394: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
395: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
396: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
397: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
398: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
399: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
400: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
401: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
402: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
403: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
404: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
405: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
406: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
407: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
408: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
409: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
410: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
411: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
412: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
413: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
414: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
415: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
416: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
417: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
418: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
419: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
420: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
421: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
422: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
423: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
424: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
425: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
426: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
427: { roff_unsupp, NULL, NULL, 0 }, /* index */
428: { roff_it, NULL, NULL, 0 }, /* it */
429: { roff_unsupp, NULL, NULL, 0 }, /* itc */
430: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
431: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
432: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
433: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
434: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
435: { roff_unsupp, NULL, NULL, 0 }, /* lc */
436: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
437: { roff_unsupp, NULL, NULL, 0 }, /* lds */
438: { roff_unsupp, NULL, NULL, 0 }, /* length */
439: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
440: { roff_insec, NULL, NULL, 0 }, /* lf */
441: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
442: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
443: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
444: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
445: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
446: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
447: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
448: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
449: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
450: { roff_line_ignore, NULL, NULL, 0 }, /* mc */
451: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
452: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
453: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
454: { roff_insec, NULL, NULL, 0 }, /* mso */
455: { roff_line_ignore, NULL, NULL, 0 }, /* na */
456: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
457: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
458: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
459: { roff_unsupp, NULL, NULL, 0 }, /* nm */
460: { roff_unsupp, NULL, NULL, 0 }, /* nn */
461: { roff_unsupp, NULL, NULL, 0 }, /* nop */
462: { roff_nr, NULL, NULL, 0 }, /* nr */
463: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
464: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
465: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
466: { roff_insec, NULL, NULL, 0 }, /* nx */
467: { roff_insec, NULL, NULL, 0 }, /* open */
468: { roff_insec, NULL, NULL, 0 }, /* opena */
469: { roff_line_ignore, NULL, NULL, 0 }, /* os */
470: { roff_unsupp, NULL, NULL, 0 }, /* output */
471: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
472: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
473: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
474: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
475: { roff_insec, NULL, NULL, 0 }, /* pi */
476: { roff_unsupp, NULL, NULL, 0 }, /* PI */
477: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
478: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
479: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
480: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
481: { roff_line_ignore, NULL, NULL, 0 }, /* po */
482: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
483: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
484: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
485: { roff_insec, NULL, NULL, 0 }, /* pso */
486: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
487: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
488: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
489: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
490: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
491: { roff_unsupp, NULL, NULL, 0 }, /* return */
492: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
493: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
494: { roff_line_ignore, NULL, NULL, 0 }, /* rj */
495: { roff_rm, NULL, NULL, 0 }, /* rm */
496: { roff_unsupp, NULL, NULL, 0 }, /* rn */
497: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
498: { roff_rr, NULL, NULL, 0 }, /* rr */
499: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
500: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
501: { roff_unsupp, NULL, NULL, 0 }, /* schar */
502: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
503: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
504: { roff_unsupp, NULL, NULL, 0 }, /* shift */
505: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
506: { roff_so, NULL, NULL, 0 }, /* so */
507: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
508: { roff_line_ignore, NULL, NULL, 0 }, /* special */
509: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
510: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
511: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
512: { roff_unsupp, NULL, NULL, 0 }, /* substring */
513: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
514: { roff_insec, NULL, NULL, 0 }, /* sy */
515: { roff_T_, NULL, NULL, 0 }, /* T& */
516: { roff_unsupp, NULL, NULL, 0 }, /* ta */
517: { roff_unsupp, NULL, NULL, 0 }, /* tc */
518: { roff_TE, NULL, NULL, 0 }, /* TE */
519: { roff_TH, NULL, NULL, 0 }, /* TH */
520: { roff_unsupp, NULL, NULL, 0 }, /* ti */
521: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
522: { roff_unsupp, NULL, NULL, 0 }, /* tl */
523: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
524: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
525: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
526: { roff_tr, NULL, NULL, 0 }, /* tr */
527: { roff_line_ignore, NULL, NULL, 0 }, /* track */
528: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
529: { roff_insec, NULL, NULL, 0 }, /* trf */
530: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
531: { roff_unsupp, NULL, NULL, 0 }, /* trin */
532: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
533: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
534: { roff_TS, NULL, NULL, 0 }, /* TS */
535: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
536: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
537: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
538: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
539: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
540: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
541: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
542: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
543: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
544: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
545: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
546: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
547: { roff_unsupp, NULL, NULL, 0 }, /* wh */
548: { roff_unsupp, NULL, NULL, 0 }, /* while */
549: { roff_insec, NULL, NULL, 0 }, /* write */
550: { roff_insec, NULL, NULL, 0 }, /* writec */
551: { roff_insec, NULL, NULL, 0 }, /* writem */
552: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
553: { roff_cblock, NULL, NULL, 0 }, /* . */
554: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 555: };
556:
1.73 schwarze 557: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.47 schwarze 558: const char *const __mdoc_reserved[] = {
559: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
560: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
561: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
562: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.73 schwarze 563: "Dt", "Dv", "Dx", "D1",
564: "Ec", "Ed", "Ef", "Ek", "El", "Em",
565: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.47 schwarze 566: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.73 schwarze 567: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
568: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.47 schwarze 569: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.73 schwarze 570: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
571: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
572: "Sc", "Sh", "Sm", "So", "Sq",
1.47 schwarze 573: "Ss", "St", "Sx", "Sy",
574: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.73 schwarze 575: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.47 schwarze 576: "%P", "%Q", "%R", "%T", "%U", "%V",
577: NULL
578: };
579:
1.73 schwarze 580: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.47 schwarze 581: const char *const __man_reserved[] = {
1.73 schwarze 582: "AT", "B", "BI", "BR", "DT",
583: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
584: "LP", "OP", "P", "PD", "PP",
585: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
586: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.47 schwarze 587: NULL
588: };
589:
1.37 schwarze 590: /* Array of injected predefined strings. */
591: #define PREDEFS_MAX 38
592: static const struct predef predefs[PREDEFS_MAX] = {
593: #include "predefs.in"
594: };
595:
1.51 schwarze 596: static int roffit_lines; /* number of lines to delay */
597: static char *roffit_macro; /* nil-terminated macro line */
598:
1.80 schwarze 599:
1.138 schwarze 600: /* --- request table ------------------------------------------------------ */
601:
1.167 schwarze 602: struct ohash *
603: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 604: {
1.167 schwarze 605: struct ohash *htab;
606: struct roffreq *req;
607: enum roff_tok tok;
608: size_t sz;
609: unsigned int slot;
1.3 schwarze 610:
1.167 schwarze 611: htab = mandoc_malloc(sizeof(*htab));
612: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 613:
1.167 schwarze 614: for (tok = mintok; tok < maxtok; tok++) {
1.168 ! schwarze 615: if (roff_name[tok] == NULL)
! 616: continue;
1.167 schwarze 617: sz = strlen(roff_name[tok]);
618: req = mandoc_malloc(sizeof(*req) + sz + 1);
619: req->tok = tok;
620: memcpy(req->name, roff_name[tok], sz + 1);
621: slot = ohash_qlookup(htab, req->name);
622: ohash_insert(htab, slot, req);
1.3 schwarze 623: }
1.167 schwarze 624: return htab;
1.3 schwarze 625: }
626:
1.167 schwarze 627: void
628: roffhash_free(struct ohash *htab)
1.1 schwarze 629: {
1.167 schwarze 630: struct roffreq *req;
631: unsigned int slot;
1.1 schwarze 632:
1.167 schwarze 633: if (htab == NULL)
634: return;
635: for (req = ohash_first(htab, &slot); req != NULL;
636: req = ohash_next(htab, &slot))
637: free(req);
638: ohash_delete(htab);
639: free(htab);
640: }
641:
642: enum roff_tok
643: roffhash_find(struct ohash *htab, const char *name, size_t sz)
644: {
645: struct roffreq *req;
646: const char *end;
647:
648: if (sz) {
649: end = name + sz;
650: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
651: } else
652: req = ohash_find(htab, ohash_qlookup(htab, name));
653: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 654: }
655:
1.138 schwarze 656: /* --- stack of request blocks -------------------------------------------- */
657:
1.1 schwarze 658: /*
659: * Pop the current node off of the stack of roff instructions currently
660: * pending.
661: */
662: static void
663: roffnode_pop(struct roff *r)
664: {
665: struct roffnode *p;
666:
1.2 schwarze 667: assert(r->last);
1.80 schwarze 668: p = r->last;
1.2 schwarze 669:
670: r->last = r->last->parent;
1.16 schwarze 671: free(p->name);
672: free(p->end);
1.1 schwarze 673: free(p);
674: }
675:
676: /*
677: * Push a roff node onto the instruction stack. This must later be
678: * removed with roffnode_pop().
679: */
1.11 schwarze 680: static void
1.166 schwarze 681: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 682: int line, int col)
1.1 schwarze 683: {
684: struct roffnode *p;
685:
1.11 schwarze 686: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 687: p->tok = tok;
1.16 schwarze 688: if (name)
689: p->name = mandoc_strdup(name);
1.1 schwarze 690: p->parent = r->last;
691: p->line = line;
692: p->col = col;
1.71 schwarze 693: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 694:
695: r->last = p;
696: }
697:
1.138 schwarze 698: /* --- roff parser state data management ---------------------------------- */
699:
1.1 schwarze 700: static void
701: roff_free1(struct roff *r)
702: {
1.49 schwarze 703: struct tbl_node *tbl;
1.32 schwarze 704: struct eqn_node *e;
1.42 schwarze 705: int i;
1.27 schwarze 706:
1.49 schwarze 707: while (NULL != (tbl = r->first_tbl)) {
708: r->first_tbl = tbl->next;
709: tbl_free(tbl);
1.27 schwarze 710: }
711: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 712:
1.32 schwarze 713: while (NULL != (e = r->first_eqn)) {
714: r->first_eqn = e->next;
715: eqn_free(e);
716: }
717: r->first_eqn = r->last_eqn = r->eqn = NULL;
718:
1.1 schwarze 719: while (r->last)
720: roffnode_pop(r);
1.27 schwarze 721:
1.96 schwarze 722: free (r->rstack);
723: r->rstack = NULL;
724: r->rstacksz = 0;
725: r->rstackpos = -1;
726:
727: roff_freereg(r->regtab);
728: r->regtab = NULL;
729:
1.42 schwarze 730: roff_freestr(r->strtab);
731: roff_freestr(r->xmbtab);
732: r->strtab = r->xmbtab = NULL;
733:
734: if (r->xtab)
735: for (i = 0; i < 128; i++)
736: free(r->xtab[i].p);
737: free(r->xtab);
738: r->xtab = NULL;
1.1 schwarze 739: }
740:
741: void
742: roff_reset(struct roff *r)
743: {
744: roff_free1(r);
1.99 schwarze 745: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.48 schwarze 746: r->control = 0;
1.1 schwarze 747: }
748:
749: void
750: roff_free(struct roff *r)
751: {
752: roff_free1(r);
1.167 schwarze 753: roffhash_free(r->reqtab);
1.1 schwarze 754: free(r);
755: }
756:
757: struct roff *
1.151 schwarze 758: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 759: {
760: struct roff *r;
761:
1.11 schwarze 762: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 763: r->parse = parse;
1.167 schwarze 764: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.72 schwarze 765: r->options = options;
1.99 schwarze 766: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 767: r->rstackpos = -1;
1.149 schwarze 768: return r;
1.137 schwarze 769: }
770:
1.138 schwarze 771: /* --- syntax tree state data management ---------------------------------- */
772:
1.137 schwarze 773: static void
774: roff_man_free1(struct roff_man *man)
775: {
776:
1.138 schwarze 777: if (man->first != NULL)
778: roff_node_delete(man, man->first);
1.137 schwarze 779: free(man->meta.msec);
780: free(man->meta.vol);
781: free(man->meta.os);
782: free(man->meta.arch);
783: free(man->meta.title);
784: free(man->meta.name);
785: free(man->meta.date);
786: }
787:
788: static void
789: roff_man_alloc1(struct roff_man *man)
790: {
791:
792: memset(&man->meta, 0, sizeof(man->meta));
793: man->first = mandoc_calloc(1, sizeof(*man->first));
794: man->first->type = ROFFT_ROOT;
795: man->last = man->first;
796: man->last_es = NULL;
797: man->flags = 0;
798: man->macroset = MACROSET_NONE;
799: man->lastsec = man->lastnamed = SEC_NONE;
800: man->next = ROFF_NEXT_CHILD;
801: }
802:
803: void
804: roff_man_reset(struct roff_man *man)
805: {
806:
807: roff_man_free1(man);
808: roff_man_alloc1(man);
809: }
810:
811: void
812: roff_man_free(struct roff_man *man)
813: {
814:
815: roff_man_free1(man);
816: free(man);
817: }
818:
819: struct roff_man *
820: roff_man_alloc(struct roff *roff, struct mparse *parse,
821: const char *defos, int quick)
822: {
823: struct roff_man *man;
824:
825: man = mandoc_calloc(1, sizeof(*man));
826: man->parse = parse;
827: man->roff = roff;
828: man->defos = defos;
829: man->quick = quick;
830: roff_man_alloc1(man);
1.168 ! schwarze 831: roff->man = man;
1.149 schwarze 832: return man;
1.1 schwarze 833: }
834:
1.138 schwarze 835: /* --- syntax tree handling ----------------------------------------------- */
836:
837: struct roff_node *
838: roff_node_alloc(struct roff_man *man, int line, int pos,
839: enum roff_type type, int tok)
840: {
841: struct roff_node *n;
842:
843: n = mandoc_calloc(1, sizeof(*n));
844: n->line = line;
845: n->pos = pos;
846: n->tok = tok;
847: n->type = type;
848: n->sec = man->lastsec;
849:
850: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 851: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 852: else
1.157 schwarze 853: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 854: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 855: n->flags |= NODE_LINE;
1.138 schwarze 856: man->flags &= ~MDOC_NEWLINE;
857:
1.149 schwarze 858: return n;
1.138 schwarze 859: }
860:
861: void
862: roff_node_append(struct roff_man *man, struct roff_node *n)
863: {
864:
865: switch (man->next) {
866: case ROFF_NEXT_SIBLING:
1.153 schwarze 867: if (man->last->next != NULL) {
868: n->next = man->last->next;
869: man->last->next->prev = n;
870: } else
871: man->last->parent->last = n;
1.138 schwarze 872: man->last->next = n;
873: n->prev = man->last;
874: n->parent = man->last->parent;
875: break;
876: case ROFF_NEXT_CHILD:
1.159 schwarze 877: if (man->last->child != NULL) {
878: n->next = man->last->child;
879: man->last->child->prev = n;
880: } else
881: man->last->last = n;
1.138 schwarze 882: man->last->child = n;
883: n->parent = man->last;
884: break;
885: default:
886: abort();
887: }
1.154 schwarze 888: man->last = n;
1.138 schwarze 889:
890: switch (n->type) {
891: case ROFFT_HEAD:
892: n->parent->head = n;
893: break;
894: case ROFFT_BODY:
1.154 schwarze 895: if (n->end != ENDBODY_NOT)
896: return;
1.138 schwarze 897: n->parent->body = n;
898: break;
899: case ROFFT_TAIL:
900: n->parent->tail = n;
901: break;
902: default:
1.154 schwarze 903: return;
1.138 schwarze 904: }
1.154 schwarze 905:
906: /*
907: * Copy over the normalised-data pointer of our parent. Not
908: * everybody has one, but copying a null pointer is fine.
909: */
910:
911: n->norm = n->parent->norm;
912: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 913: }
914:
1.139 schwarze 915: void
916: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
917: {
918: struct roff_node *n;
919:
920: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
921: n->string = roff_strdup(man->roff, word);
922: roff_node_append(man, n);
1.158 schwarze 923: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 924: man->next = ROFF_NEXT_SIBLING;
925: }
926:
927: void
928: roff_word_append(struct roff_man *man, const char *word)
929: {
930: struct roff_node *n;
931: char *addstr, *newstr;
932:
933: n = man->last;
934: addstr = roff_strdup(man->roff, word);
935: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
936: free(addstr);
937: free(n->string);
938: n->string = newstr;
939: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 940: }
941:
942: void
943: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
944: {
945: struct roff_node *n;
946:
947: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
948: roff_node_append(man, n);
949: man->next = ROFF_NEXT_CHILD;
950: }
951:
952: struct roff_node *
953: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
954: {
955: struct roff_node *n;
956:
957: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
958: roff_node_append(man, n);
959: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 960: return n;
1.139 schwarze 961: }
962:
1.138 schwarze 963: struct roff_node *
964: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
965: {
966: struct roff_node *n;
967:
968: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
969: roff_node_append(man, n);
970: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 971: return n;
1.138 schwarze 972: }
973:
974: struct roff_node *
975: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
976: {
977: struct roff_node *n;
978:
979: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
980: roff_node_append(man, n);
981: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 982: return n;
1.139 schwarze 983: }
984:
985: void
986: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
987: {
988: struct roff_node *n;
989:
990: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
991: n->eqn = eqn;
992: if (eqn->ln > man->last->line)
1.157 schwarze 993: n->flags |= NODE_LINE;
1.139 schwarze 994: roff_node_append(man, n);
995: man->next = ROFF_NEXT_SIBLING;
996: }
997:
998: void
999: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1000: {
1001: struct roff_node *n;
1002:
1003: if (man->macroset == MACROSET_MAN)
1004: man_breakscope(man, TOKEN_NONE);
1005: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1006: n->span = tbl;
1007: roff_node_append(man, n);
1.158 schwarze 1008: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 1009: man->next = ROFF_NEXT_SIBLING;
1.138 schwarze 1010: }
1011:
1012: void
1013: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1014: {
1015:
1016: /* Adjust siblings. */
1017:
1018: if (n->prev)
1019: n->prev->next = n->next;
1020: if (n->next)
1021: n->next->prev = n->prev;
1022:
1023: /* Adjust parent. */
1024:
1025: if (n->parent != NULL) {
1026: if (n->parent->child == n)
1027: n->parent->child = n->next;
1028: if (n->parent->last == n)
1029: n->parent->last = n->prev;
1030: }
1031:
1032: /* Adjust parse point. */
1033:
1034: if (man == NULL)
1035: return;
1036: if (man->last == n) {
1037: if (n->prev == NULL) {
1038: man->last = n->parent;
1039: man->next = ROFF_NEXT_CHILD;
1040: } else {
1041: man->last = n->prev;
1042: man->next = ROFF_NEXT_SIBLING;
1043: }
1044: }
1045: if (man->first == n)
1046: man->first = NULL;
1047: }
1048:
1049: void
1050: roff_node_free(struct roff_node *n)
1051: {
1052:
1053: if (n->args != NULL)
1054: mdoc_argv_free(n->args);
1055: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1056: free(n->norm);
1057: free(n->string);
1058: free(n);
1059: }
1060:
1061: void
1062: roff_node_delete(struct roff_man *man, struct roff_node *n)
1063: {
1064:
1065: while (n->child != NULL)
1066: roff_node_delete(man, n->child);
1067: roff_node_unlink(man, n);
1068: roff_node_free(n);
1.141 schwarze 1069: }
1070:
1071: void
1072: deroff(char **dest, const struct roff_node *n)
1073: {
1074: char *cp;
1075: size_t sz;
1076:
1077: if (n->type != ROFFT_TEXT) {
1078: for (n = n->child; n != NULL; n = n->next)
1079: deroff(dest, n);
1080: return;
1081: }
1082:
1.160 schwarze 1083: /* Skip leading whitespace. */
1.141 schwarze 1084:
1.160 schwarze 1085: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1086: if (cp[0] == '\\' && cp[1] != '\0' &&
1087: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1088: cp++;
1.160 schwarze 1089: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1090: break;
1091: }
1092:
1.161 schwarze 1093: /* Skip trailing backslash. */
1094:
1095: sz = strlen(cp);
1.162 schwarze 1096: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1097: sz--;
1098:
1.141 schwarze 1099: /* Skip trailing whitespace. */
1100:
1.161 schwarze 1101: for (; sz; sz--)
1.141 schwarze 1102: if ( ! isspace((unsigned char)cp[sz-1]))
1103: break;
1104:
1105: /* Skip empty strings. */
1106:
1107: if (sz == 0)
1108: return;
1109:
1110: if (*dest == NULL) {
1111: *dest = mandoc_strndup(cp, sz);
1112: return;
1113: }
1114:
1115: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1116: free(*dest);
1117: *dest = cp;
1.138 schwarze 1118: }
1119:
1120: /* --- main functions of the roff parser ---------------------------------- */
1121:
1.8 schwarze 1122: /*
1.79 schwarze 1123: * In the current line, expand escape sequences that tend to get
1124: * used in numerical expressions and conditional requests.
1125: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1126: */
1.45 schwarze 1127: static enum rofferr
1.110 schwarze 1128: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1129: {
1.81 schwarze 1130: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1131: const char *start; /* start of the string to process */
1.82 schwarze 1132: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1133: const char *stnam; /* start of the name, after "[(*" */
1134: const char *cp; /* end of the name, e.g. before ']' */
1135: const char *res; /* the string to be substituted */
1.110 schwarze 1136: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1137: size_t maxl; /* expected length of the escape name */
1138: size_t naml; /* actual length of the escape name */
1.109 schwarze 1139: enum mandoc_esc esc; /* type of the escape sequence */
1140: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1141: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1142: int npos; /* position in numeric expression */
1.91 schwarze 1143: int arg_complete; /* argument not interrupted by eol */
1.79 schwarze 1144: char term; /* character terminating the escape */
1.8 schwarze 1145:
1.43 schwarze 1146: expand_count = 0;
1.110 schwarze 1147: start = buf->buf + pos;
1.78 schwarze 1148: stesc = strchr(start, '\0') - 1;
1149: while (stesc-- > start) {
1.43 schwarze 1150:
1.78 schwarze 1151: /* Search backwards for the next backslash. */
1152:
1.110 schwarze 1153: if (*stesc != '\\')
1.78 schwarze 1154: continue;
1155:
1156: /* If it is escaped, skip it. */
1157:
1158: for (cp = stesc - 1; cp >= start; cp--)
1.110 schwarze 1159: if (*cp != '\\')
1.78 schwarze 1160: break;
1161:
1.110 schwarze 1162: if ((stesc - cp) % 2 == 0) {
1.82 schwarze 1163: stesc = (char *)cp;
1.78 schwarze 1164: continue;
1165: }
1.23 schwarze 1166:
1.79 schwarze 1167: /* Decide whether to expand or to check only. */
1.23 schwarze 1168:
1.79 schwarze 1169: term = '\0';
1.78 schwarze 1170: cp = stesc + 1;
1.53 schwarze 1171: switch (*cp) {
1.80 schwarze 1172: case '*':
1.53 schwarze 1173: res = NULL;
1174: break;
1.80 schwarze 1175: case 'B':
1176: case 'w':
1.79 schwarze 1177: term = cp[1];
1178: /* FALLTHROUGH */
1.80 schwarze 1179: case 'n':
1.53 schwarze 1180: res = ubuf;
1181: break;
1182: default:
1.109 schwarze 1183: esc = mandoc_escape(&cp, &stnam, &inaml);
1184: if (esc == ESCAPE_ERROR ||
1185: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1186: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1187: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1188: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1189: "%.*s", (int)(cp - stesc), stesc);
1.78 schwarze 1190: continue;
1.42 schwarze 1191: }
1192:
1.78 schwarze 1193: if (EXPAND_LIMIT < ++expand_count) {
1194: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1195: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1196: return ROFF_IGN;
1.78 schwarze 1197: }
1.23 schwarze 1198:
1199: /*
1200: * The third character decides the length
1.53 schwarze 1201: * of the name of the string or register.
1.23 schwarze 1202: * Save a pointer to the name.
1203: */
1204:
1.110 schwarze 1205: if (term == '\0') {
1.79 schwarze 1206: switch (*++cp) {
1.80 schwarze 1207: case '\0':
1.79 schwarze 1208: maxl = 0;
1209: break;
1.80 schwarze 1210: case '(':
1.79 schwarze 1211: cp++;
1212: maxl = 2;
1213: break;
1.80 schwarze 1214: case '[':
1.79 schwarze 1215: cp++;
1216: term = ']';
1217: maxl = 0;
1218: break;
1219: default:
1220: maxl = 1;
1221: break;
1222: }
1223: } else {
1224: cp += 2;
1.8 schwarze 1225: maxl = 0;
1226: }
1.23 schwarze 1227: stnam = cp;
1.8 schwarze 1228:
1.23 schwarze 1229: /* Advance to the end of the name. */
1.8 schwarze 1230:
1.125 schwarze 1231: naml = 0;
1.91 schwarze 1232: arg_complete = 1;
1.125 schwarze 1233: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1234: if (*cp == '\0') {
1.92 schwarze 1235: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1236: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1237: arg_complete = 0;
1.79 schwarze 1238: break;
1.42 schwarze 1239: }
1.110 schwarze 1240: if (maxl == 0 && *cp == term) {
1.79 schwarze 1241: cp++;
1.125 schwarze 1242: break;
1243: }
1244: if (*cp++ != '\\' || stesc[1] != 'w') {
1245: naml++;
1246: continue;
1247: }
1248: switch (mandoc_escape(&cp, NULL, NULL)) {
1249: case ESCAPE_SPECIAL:
1250: case ESCAPE_UNICODE:
1251: case ESCAPE_NUMBERED:
1252: case ESCAPE_OVERSTRIKE:
1253: naml++;
1254: break;
1255: default:
1.8 schwarze 1256: break;
1.79 schwarze 1257: }
1.8 schwarze 1258: }
1259:
1.23 schwarze 1260: /*
1261: * Retrieve the replacement string; if it is
1262: * undefined, resume searching for escapes.
1263: */
1264:
1.79 schwarze 1265: switch (stesc[1]) {
1.80 schwarze 1266: case '*':
1.91 schwarze 1267: if (arg_complete)
1268: res = roff_getstrn(r, stnam, naml);
1.79 schwarze 1269: break;
1.80 schwarze 1270: case 'B':
1.79 schwarze 1271: npos = 0;
1.91 schwarze 1272: ubuf[0] = arg_complete &&
1.133 schwarze 1273: roff_evalnum(r, ln, stnam, &npos,
1274: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1275: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1276: ubuf[1] = '\0';
1277: break;
1.80 schwarze 1278: case 'n':
1.91 schwarze 1279: if (arg_complete)
1280: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1281: roff_getregn(r, stnam, naml));
1282: else
1283: ubuf[0] = '\0';
1.79 schwarze 1284: break;
1.80 schwarze 1285: case 'w':
1.91 schwarze 1286: /* use even incomplete args */
1.81 schwarze 1287: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1288: 24 * (int)naml);
1289: break;
1290: }
1.8 schwarze 1291:
1.110 schwarze 1292: if (res == NULL) {
1.92 schwarze 1293: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1294: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1295: "%.*s", (int)naml, stnam);
1.37 schwarze 1296: res = "";
1.118 schwarze 1297: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1298: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1299: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1300: return ROFF_IGN;
1.8 schwarze 1301: }
1302:
1.23 schwarze 1303: /* Replace the escape sequence by the string. */
1304:
1.82 schwarze 1305: *stesc = '\0';
1.110 schwarze 1306: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1307: buf->buf, res, cp) + 1;
1.8 schwarze 1308:
1.78 schwarze 1309: /* Prepare for the next replacement. */
1.8 schwarze 1310:
1.78 schwarze 1311: start = nbuf + pos;
1.110 schwarze 1312: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1313: free(buf->buf);
1314: buf->buf = nbuf;
1.42 schwarze 1315: }
1.149 schwarze 1316: return ROFF_CONT;
1.42 schwarze 1317: }
1318:
1319: /*
1.147 schwarze 1320: * Process text streams.
1.42 schwarze 1321: */
1322: static enum rofferr
1.110 schwarze 1323: roff_parsetext(struct buf *buf, int pos, int *offs)
1.42 schwarze 1324: {
1325: size_t sz;
1326: const char *start;
1.51 schwarze 1327: char *p;
1328: int isz;
1.42 schwarze 1329: enum mandoc_esc esc;
1330:
1.147 schwarze 1331: /* Spring the input line trap. */
1332:
1333: if (roffit_lines == 1) {
1334: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1335: free(buf->buf);
1336: buf->buf = p;
1337: buf->sz = isz + 1;
1338: *offs = 0;
1339: free(roffit_macro);
1340: roffit_lines = 0;
1.149 schwarze 1341: return ROFF_REPARSE;
1.147 schwarze 1342: } else if (roffit_lines > 1)
1343: --roffit_lines;
1344:
1345: /* Convert all breakable hyphens into ASCII_HYPH. */
1346:
1.110 schwarze 1347: start = p = buf->buf + pos;
1.42 schwarze 1348:
1.110 schwarze 1349: while (*p != '\0') {
1.42 schwarze 1350: sz = strcspn(p, "-\\");
1351: p += sz;
1352:
1.110 schwarze 1353: if (*p == '\0')
1.42 schwarze 1354: break;
1355:
1.110 schwarze 1356: if (*p == '\\') {
1.42 schwarze 1357: /* Skip over escapes. */
1358: p++;
1.62 schwarze 1359: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1360: if (esc == ESCAPE_ERROR)
1.42 schwarze 1361: break;
1.136 schwarze 1362: while (*p == '-')
1363: p++;
1.42 schwarze 1364: continue;
1365: } else if (p == start) {
1366: p++;
1367: continue;
1368: }
1369:
1.44 schwarze 1370: if (isalpha((unsigned char)p[-1]) &&
1371: isalpha((unsigned char)p[1]))
1.42 schwarze 1372: *p = ASCII_HYPH;
1373: p++;
1.8 schwarze 1374: }
1.149 schwarze 1375: return ROFF_CONT;
1.8 schwarze 1376: }
1377:
1.1 schwarze 1378: enum rofferr
1.110 schwarze 1379: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1380: {
1.166 schwarze 1381: enum roff_tok t;
1.27 schwarze 1382: enum rofferr e;
1.110 schwarze 1383: int pos; /* parse point */
1.115 schwarze 1384: int spos; /* saved parse point for messages */
1.110 schwarze 1385: int ppos; /* original offset in buf->buf */
1386: int ctl; /* macro line (boolean) */
1387:
1388: ppos = pos = *offs;
1.1 schwarze 1389:
1.102 schwarze 1390: /* Handle in-line equation delimiters. */
1391:
1.108 schwarze 1392: if (r->tbl == NULL &&
1393: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1394: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1395: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1396: if (e == ROFF_REPARSE)
1.149 schwarze 1397: return e;
1.102 schwarze 1398: assert(e == ROFF_CONT);
1399: }
1400:
1401: /* Expand some escape sequences. */
1.8 schwarze 1402:
1.110 schwarze 1403: e = roff_res(r, buf, ln, pos);
1404: if (e == ROFF_IGN)
1.149 schwarze 1405: return e;
1.110 schwarze 1406: assert(e == ROFF_CONT);
1.8 schwarze 1407:
1.110 schwarze 1408: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1409:
1.8 schwarze 1410: /*
1.2 schwarze 1411: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1412: * text through the macro's filter.
1413: * Equations process all content themselves.
1414: * Tables process almost all content themselves, but we want
1415: * to warn about macros before passing it there.
1.2 schwarze 1416: */
1417:
1.124 schwarze 1418: if (r->last != NULL && ! ctl) {
1.2 schwarze 1419: t = r->last->tok;
1.110 schwarze 1420: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.166 schwarze 1421: if (e == ROFF_IGN)
1.149 schwarze 1422: return e;
1.166 schwarze 1423: assert(e == ROFF_CONT);
1.54 schwarze 1424: }
1.124 schwarze 1425: if (r->eqn != NULL)
1.149 schwarze 1426: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.124 schwarze 1427: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.149 schwarze 1428: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.124 schwarze 1429: if ( ! ctl)
1.149 schwarze 1430: return roff_parsetext(buf, pos, offs);
1.100 schwarze 1431:
1432: /* Skip empty request lines. */
1433:
1.110 schwarze 1434: if (buf->buf[pos] == '"') {
1.100 schwarze 1435: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1436: ln, pos, NULL);
1.149 schwarze 1437: return ROFF_IGN;
1.110 schwarze 1438: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1439: return ROFF_IGN;
1.2 schwarze 1440:
1441: /*
1442: * If a scope is open, go to the child handler for that macro,
1443: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1444: * Don't do so if an equation is open.
1.2 schwarze 1445: */
1446:
1447: if (r->last) {
1.1 schwarze 1448: t = r->last->tok;
1.149 schwarze 1449: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1450: }
1451:
1.115 schwarze 1452: /* No scope is open. This is a new request or macro. */
1453:
1454: spos = pos;
1455: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1456:
1457: /* Tables ignore most macros. */
1458:
1.166 schwarze 1459: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS)) {
1.115 schwarze 1460: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1461: ln, pos, buf->buf + spos);
1.129 schwarze 1462: if (t == ROFF_TS)
1.149 schwarze 1463: return ROFF_IGN;
1.129 schwarze 1464: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1465: pos++;
1.163 schwarze 1466: while (buf->buf[pos] == ' ')
1.129 schwarze 1467: pos++;
1.149 schwarze 1468: return tbl_read(r->tbl, ln, buf->buf, pos);
1.115 schwarze 1469: }
1470:
1.2 schwarze 1471: /*
1.115 schwarze 1472: * This is neither a roff request nor a user-defined macro.
1473: * Let the standard macro set parsers handle it.
1.2 schwarze 1474: */
1475:
1.166 schwarze 1476: if (t == TOKEN_NONE)
1.149 schwarze 1477: return ROFF_CONT;
1.115 schwarze 1478:
1479: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1480:
1.168 ! schwarze 1481: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1482: }
1483:
1.27 schwarze 1484: void
1.2 schwarze 1485: roff_endparse(struct roff *r)
1486: {
1.1 schwarze 1487:
1.27 schwarze 1488: if (r->last)
1.94 schwarze 1489: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1490: r->last->line, r->last->col,
1.167 schwarze 1491: roff_name[r->last->tok]);
1.27 schwarze 1492:
1.32 schwarze 1493: if (r->eqn) {
1.94 schwarze 1494: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1495: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1496: eqn_end(&r->eqn);
1.32 schwarze 1497: }
1498:
1.27 schwarze 1499: if (r->tbl) {
1.94 schwarze 1500: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1501: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1502: tbl_end(&r->tbl);
1.27 schwarze 1503: }
1.1 schwarze 1504: }
1505:
1506: /*
1507: * Parse a roff node's type from the input buffer. This must be in the
1508: * form of ".foo xxx" in the usual way.
1509: */
1.166 schwarze 1510: static enum roff_tok
1.87 schwarze 1511: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1512: {
1.87 schwarze 1513: char *cp;
1.16 schwarze 1514: const char *mac;
1515: size_t maclen;
1.166 schwarze 1516: enum roff_tok t;
1.1 schwarze 1517:
1.87 schwarze 1518: cp = buf + *pos;
1519:
1520: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1521: return TOKEN_NONE;
1.1 schwarze 1522:
1.87 schwarze 1523: mac = cp;
1524: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1525:
1.16 schwarze 1526: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.167 schwarze 1527: ? ROFF_USERDEF : roffhash_find(r->reqtab, mac, maclen);
1.1 schwarze 1528:
1.166 schwarze 1529: if (t != TOKEN_NONE)
1.87 schwarze 1530: *pos = cp - buf;
1.1 schwarze 1531:
1.149 schwarze 1532: return t;
1.1 schwarze 1533: }
1534:
1.138 schwarze 1535: /* --- handling of request blocks ----------------------------------------- */
1536:
1.1 schwarze 1537: static enum rofferr
1.2 schwarze 1538: roff_cblock(ROFF_ARGS)
1.1 schwarze 1539: {
1540:
1.2 schwarze 1541: /*
1542: * A block-close `..' should only be invoked as a child of an
1543: * ignore macro, otherwise raise a warning and just ignore it.
1544: */
1545:
1.110 schwarze 1546: if (r->last == NULL) {
1.94 schwarze 1547: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1548: ln, ppos, "..");
1.149 schwarze 1549: return ROFF_IGN;
1.2 schwarze 1550: }
1.1 schwarze 1551:
1.2 schwarze 1552: switch (r->last->tok) {
1.80 schwarze 1553: case ROFF_am:
1.93 schwarze 1554: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1555: case ROFF_ami:
1556: case ROFF_de:
1.23 schwarze 1557: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1558: case ROFF_dei:
1559: case ROFF_ig:
1.2 schwarze 1560: break;
1561: default:
1.94 schwarze 1562: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1563: ln, ppos, "..");
1.149 schwarze 1564: return ROFF_IGN;
1.2 schwarze 1565: }
1566:
1.110 schwarze 1567: if (buf->buf[pos] != '\0')
1.90 schwarze 1568: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1569: ".. %s", buf->buf + pos);
1.2 schwarze 1570:
1571: roffnode_pop(r);
1572: roffnode_cleanscope(r);
1.149 schwarze 1573: return ROFF_IGN;
1.2 schwarze 1574:
1575: }
1.1 schwarze 1576:
1.2 schwarze 1577: static void
1578: roffnode_cleanscope(struct roff *r)
1579: {
1.1 schwarze 1580:
1.2 schwarze 1581: while (r->last) {
1.46 schwarze 1582: if (--r->last->endspan != 0)
1.2 schwarze 1583: break;
1584: roffnode_pop(r);
1585: }
1586: }
1.1 schwarze 1587:
1.68 schwarze 1588: static void
1589: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1590: {
1.1 schwarze 1591:
1.2 schwarze 1592: if (NULL == r->last) {
1.94 schwarze 1593: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1594: ln, ppos, "\\}");
1.68 schwarze 1595: return;
1.2 schwarze 1596: }
1.1 schwarze 1597:
1.2 schwarze 1598: switch (r->last->tok) {
1.80 schwarze 1599: case ROFF_el:
1600: case ROFF_ie:
1601: case ROFF_if:
1.2 schwarze 1602: break;
1603: default:
1.94 schwarze 1604: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1605: ln, ppos, "\\}");
1.68 schwarze 1606: return;
1.2 schwarze 1607: }
1.1 schwarze 1608:
1.2 schwarze 1609: if (r->last->endspan > -1) {
1.94 schwarze 1610: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1611: ln, ppos, "\\}");
1.68 schwarze 1612: return;
1.2 schwarze 1613: }
1614:
1615: roffnode_pop(r);
1616: roffnode_cleanscope(r);
1.68 schwarze 1617: return;
1.1 schwarze 1618: }
1619:
1620: static enum rofferr
1.2 schwarze 1621: roff_block(ROFF_ARGS)
1.1 schwarze 1622: {
1.93 schwarze 1623: const char *name;
1624: char *iname, *cp;
1.86 schwarze 1625: size_t namesz;
1.16 schwarze 1626:
1.93 schwarze 1627: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1628:
1.110 schwarze 1629: if (tok == ROFF_de1)
1.93 schwarze 1630: tok = ROFF_de;
1.123 schwarze 1631: else if (tok == ROFF_dei1)
1632: tok = ROFF_dei;
1.110 schwarze 1633: else if (tok == ROFF_am1)
1.93 schwarze 1634: tok = ROFF_am;
1.123 schwarze 1635: else if (tok == ROFF_ami1)
1636: tok = ROFF_ami;
1.93 schwarze 1637:
1638: /* Parse the macro name argument. */
1639:
1.110 schwarze 1640: cp = buf->buf + pos;
1641: if (tok == ROFF_ig) {
1.93 schwarze 1642: iname = NULL;
1643: namesz = 0;
1644: } else {
1645: iname = cp;
1646: namesz = roff_getname(r, &cp, ln, ppos);
1647: iname[namesz] = '\0';
1648: }
1.22 schwarze 1649:
1.93 schwarze 1650: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1651:
1.110 schwarze 1652: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1653: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1654: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1655: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1656: "%.*s", (int)namesz, iname);
1657: namesz = 0;
1658: } else
1659: namesz = strlen(name);
1660: } else
1661: name = iname;
1.22 schwarze 1662:
1.110 schwarze 1663: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1664: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1665: ln, ppos, roff_name[tok]);
1.149 schwarze 1666: return ROFF_IGN;
1.93 schwarze 1667: }
1.2 schwarze 1668:
1.16 schwarze 1669: roffnode_push(r, tok, name, ln, ppos);
1670:
1671: /*
1672: * At the beginning of a `de' macro, clear the existing string
1673: * with the same name, if there is one. New content will be
1.66 schwarze 1674: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1675: */
1.22 schwarze 1676:
1.110 schwarze 1677: if (tok == ROFF_de || tok == ROFF_dei)
1.86 schwarze 1678: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.2 schwarze 1679:
1.110 schwarze 1680: if (*cp == '\0')
1.149 schwarze 1681: return ROFF_IGN;
1.1 schwarze 1682:
1.93 schwarze 1683: /* Get the custom end marker. */
1.22 schwarze 1684:
1.93 schwarze 1685: iname = cp;
1.86 schwarze 1686: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1687:
1688: /* Resolve the end marker if it is indirect. */
1689:
1.110 schwarze 1690: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1691: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1692: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1693: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1694: "%.*s", (int)namesz, iname);
1695: namesz = 0;
1696: } else
1697: namesz = strlen(name);
1698: } else
1699: name = iname;
1700:
1.86 schwarze 1701: if (namesz)
1702: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1703:
1.110 schwarze 1704: if (*cp != '\0')
1.90 schwarze 1705: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 1706: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 1707:
1.149 schwarze 1708: return ROFF_IGN;
1.1 schwarze 1709: }
1710:
1711: static enum rofferr
1.2 schwarze 1712: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1713: {
1.166 schwarze 1714: enum roff_tok t;
1.2 schwarze 1715: int i, j;
1716:
1717: /*
1718: * First check whether a custom macro exists at this level. If
1719: * it does, then check against it. This is some of groff's
1720: * stranger behaviours. If we encountered a custom end-scope
1721: * tag and that tag also happens to be a "real" macro, then we
1722: * need to try interpreting it again as a real macro. If it's
1723: * not, then return ignore. Else continue.
1724: */
1725:
1726: if (r->last->end) {
1.35 schwarze 1727: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1728: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1729: break;
1.1 schwarze 1730:
1.110 schwarze 1731: if (r->last->end[j] == '\0' &&
1732: (buf->buf[i] == '\0' ||
1733: buf->buf[i] == ' ' ||
1734: buf->buf[i] == '\t')) {
1.2 schwarze 1735: roffnode_pop(r);
1736: roffnode_cleanscope(r);
1.1 schwarze 1737:
1.110 schwarze 1738: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1739: i++;
1740:
1741: pos = i;
1.110 schwarze 1742: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 1743: TOKEN_NONE)
1.149 schwarze 1744: return ROFF_RERUN;
1745: return ROFF_IGN;
1.2 schwarze 1746: }
1.1 schwarze 1747: }
1748:
1.2 schwarze 1749: /*
1750: * If we have no custom end-query or lookup failed, then try
1751: * pulling it out of the hashtable.
1752: */
1.1 schwarze 1753:
1.110 schwarze 1754: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1755:
1.110 schwarze 1756: if (t != ROFF_cblock) {
1757: if (tok != ROFF_ig)
1758: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1759: return ROFF_IGN;
1.16 schwarze 1760: }
1.1 schwarze 1761:
1.149 schwarze 1762: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1763: }
1764:
1765: static enum rofferr
1766: roff_block_text(ROFF_ARGS)
1767: {
1768:
1.110 schwarze 1769: if (tok != ROFF_ig)
1770: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1771:
1.149 schwarze 1772: return ROFF_IGN;
1.2 schwarze 1773: }
1774:
1775: static enum rofferr
1776: roff_cond_sub(ROFF_ARGS)
1777: {
1.166 schwarze 1778: enum roff_tok t;
1.37 schwarze 1779: char *ep;
1.71 schwarze 1780: int rr;
1.2 schwarze 1781:
1782: rr = r->last->rule;
1.37 schwarze 1783: roffnode_cleanscope(r);
1.110 schwarze 1784: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1785:
1.37 schwarze 1786: /*
1.50 schwarze 1787: * Fully handle known macros when they are structurally
1788: * required or when the conditional evaluated to true.
1.5 schwarze 1789: */
1790:
1.166 schwarze 1791: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.149 schwarze 1792: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.39 schwarze 1793:
1.69 schwarze 1794: /*
1795: * If `\}' occurs on a macro line without a preceding macro,
1796: * drop the line completely.
1797: */
1798:
1.110 schwarze 1799: ep = buf->buf + pos;
1800: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1801: rr = 0;
1.69 schwarze 1802:
1.50 schwarze 1803: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1804:
1.110 schwarze 1805: while ((ep = strchr(ep, '\\')) != NULL) {
1806: if (*(++ep) == '}') {
1.70 schwarze 1807: *ep = '&';
1.110 schwarze 1808: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1809: }
1.119 schwarze 1810: if (*ep != '\0')
1811: ++ep;
1.50 schwarze 1812: }
1.149 schwarze 1813: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1814: }
1815:
1816: static enum rofferr
1817: roff_cond_text(ROFF_ARGS)
1818: {
1.37 schwarze 1819: char *ep;
1.71 schwarze 1820: int rr;
1.2 schwarze 1821:
1822: rr = r->last->rule;
1.37 schwarze 1823: roffnode_cleanscope(r);
1.1 schwarze 1824:
1.110 schwarze 1825: ep = buf->buf + pos;
1826: while ((ep = strchr(ep, '\\')) != NULL) {
1827: if (*(++ep) == '}') {
1.70 schwarze 1828: *ep = '&';
1.110 schwarze 1829: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1830: }
1.119 schwarze 1831: if (*ep != '\0')
1832: ++ep;
1.2 schwarze 1833: }
1.149 schwarze 1834: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1835: }
1836:
1.138 schwarze 1837: /* --- handling of numeric and conditional expressions -------------------- */
1838:
1.77 schwarze 1839: /*
1840: * Parse a single signed integer number. Stop at the first non-digit.
1841: * If there is at least one digit, return success and advance the
1842: * parse point, else return failure and let the parse point unchanged.
1843: * Ignore overflows, treat them just like the C language.
1844: */
1.56 schwarze 1845: static int
1.133 schwarze 1846: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 1847: {
1.133 schwarze 1848: int myres, scaled, n, p;
1.79 schwarze 1849:
1850: if (NULL == res)
1851: res = &myres;
1.56 schwarze 1852:
1853: p = *pos;
1854: n = v[p] == '-';
1.133 schwarze 1855: if (n || v[p] == '+')
1.56 schwarze 1856: p++;
1857:
1.133 schwarze 1858: if (flags & ROFFNUM_WHITE)
1859: while (isspace((unsigned char)v[p]))
1860: p++;
1861:
1.56 schwarze 1862: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 1863: *res = 10 * *res + v[p] - '0';
1.56 schwarze 1864: if (p == *pos + n)
1865: return 0;
1866:
1867: if (n)
1868: *res = -*res;
1869:
1.126 schwarze 1870: /* Each number may be followed by one optional scaling unit. */
1871:
1872: switch (v[p]) {
1873: case 'f':
1.133 schwarze 1874: scaled = *res * 65536;
1.126 schwarze 1875: break;
1876: case 'i':
1.133 schwarze 1877: scaled = *res * 240;
1.126 schwarze 1878: break;
1879: case 'c':
1.133 schwarze 1880: scaled = *res * 240 / 2.54;
1.126 schwarze 1881: break;
1882: case 'v':
1883: case 'P':
1.133 schwarze 1884: scaled = *res * 40;
1.126 schwarze 1885: break;
1886: case 'm':
1887: case 'n':
1.133 schwarze 1888: scaled = *res * 24;
1.126 schwarze 1889: break;
1890: case 'p':
1.133 schwarze 1891: scaled = *res * 10 / 3;
1.126 schwarze 1892: break;
1893: case 'u':
1.133 schwarze 1894: scaled = *res;
1.126 schwarze 1895: break;
1896: case 'M':
1.133 schwarze 1897: scaled = *res * 6 / 25;
1.126 schwarze 1898: break;
1899: default:
1.133 schwarze 1900: scaled = *res;
1.126 schwarze 1901: p--;
1902: break;
1903: }
1.133 schwarze 1904: if (flags & ROFFNUM_SCALE)
1905: *res = scaled;
1.126 schwarze 1906:
1907: *pos = p + 1;
1.149 schwarze 1908: return 1;
1.56 schwarze 1909: }
1910:
1.71 schwarze 1911: /*
1912: * Evaluate a string comparison condition.
1913: * The first character is the delimiter.
1914: * Succeed if the string up to its second occurrence
1915: * matches the string up to its third occurence.
1916: * Advance the cursor after the third occurrence
1917: * or lacking that, to the end of the line.
1918: */
1919: static int
1920: roff_evalstrcond(const char *v, int *pos)
1921: {
1922: const char *s1, *s2, *s3;
1923: int match;
1924:
1925: match = 0;
1926: s1 = v + *pos; /* initial delimiter */
1927: s2 = s1 + 1; /* for scanning the first string */
1928: s3 = strchr(s2, *s1); /* for scanning the second string */
1929:
1930: if (NULL == s3) /* found no middle delimiter */
1931: goto out;
1932:
1933: while ('\0' != *++s3) {
1934: if (*s2 != *s3) { /* mismatch */
1935: s3 = strchr(s3, *s1);
1936: break;
1937: }
1938: if (*s3 == *s1) { /* found the final delimiter */
1939: match = 1;
1940: break;
1941: }
1942: s2++;
1943: }
1944:
1945: out:
1946: if (NULL == s3)
1947: s3 = strchr(s2, '\0');
1.114 schwarze 1948: else if (*s3 != '\0')
1.71 schwarze 1949: s3++;
1950: *pos = s3 - v;
1.149 schwarze 1951: return match;
1.71 schwarze 1952: }
1953:
1.77 schwarze 1954: /*
1955: * Evaluate an optionally negated single character, numerical,
1956: * or string condition.
1957: */
1.71 schwarze 1958: static int
1.143 schwarze 1959: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 1960: {
1.143 schwarze 1961: char *cp, *name;
1962: size_t sz;
1.113 schwarze 1963: int number, savepos, wanttrue;
1.5 schwarze 1964:
1.71 schwarze 1965: if ('!' == v[*pos]) {
1966: wanttrue = 0;
1967: (*pos)++;
1968: } else
1969: wanttrue = 1;
1970:
1.5 schwarze 1971: switch (v[*pos]) {
1.112 schwarze 1972: case '\0':
1.149 schwarze 1973: return 0;
1.80 schwarze 1974: case 'n':
1975: case 'o':
1.5 schwarze 1976: (*pos)++;
1.149 schwarze 1977: return wanttrue;
1.80 schwarze 1978: case 'c':
1979: case 'd':
1980: case 'e':
1981: case 't':
1.111 schwarze 1982: case 'v':
1.5 schwarze 1983: (*pos)++;
1.149 schwarze 1984: return !wanttrue;
1.143 schwarze 1985: case 'r':
1986: cp = name = v + ++*pos;
1987: sz = roff_getname(r, &cp, ln, *pos);
1988: *pos = cp - v;
1.149 schwarze 1989: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.5 schwarze 1990: default:
1991: break;
1992: }
1993:
1.113 schwarze 1994: savepos = *pos;
1.133 schwarze 1995: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 1996: return (number > 0) == wanttrue;
1.113 schwarze 1997: else if (*pos == savepos)
1.149 schwarze 1998: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 1999: else
1.149 schwarze 2000: return 0;
1.5 schwarze 2001: }
2002:
1.2 schwarze 2003: static enum rofferr
1.21 schwarze 2004: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2005: {
1.30 schwarze 2006:
1.149 schwarze 2007: return ROFF_IGN;
1.21 schwarze 2008: }
2009:
2010: static enum rofferr
1.123 schwarze 2011: roff_insec(ROFF_ARGS)
2012: {
2013:
2014: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2015: ln, ppos, roff_name[tok]);
1.149 schwarze 2016: return ROFF_IGN;
1.123 schwarze 2017: }
2018:
2019: static enum rofferr
2020: roff_unsupp(ROFF_ARGS)
2021: {
2022:
2023: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2024: ln, ppos, roff_name[tok]);
1.149 schwarze 2025: return ROFF_IGN;
1.123 schwarze 2026: }
2027:
2028: static enum rofferr
1.2 schwarze 2029: roff_cond(ROFF_ARGS)
2030: {
1.46 schwarze 2031:
2032: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2033:
1.80 schwarze 2034: /*
1.35 schwarze 2035: * An `.el' has no conditional body: it will consume the value
2036: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2037: * defaults to DENY.
1.35 schwarze 2038: *
2039: * If we're not an `el', however, then evaluate the conditional.
2040: */
1.1 schwarze 2041:
1.110 schwarze 2042: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2043: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2044: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2045:
1.35 schwarze 2046: /*
2047: * An if-else will put the NEGATION of the current evaluated
2048: * conditional into the stack of rules.
2049: */
2050:
1.110 schwarze 2051: if (tok == ROFF_ie) {
1.96 schwarze 2052: if (r->rstackpos + 1 == r->rstacksz) {
2053: r->rstacksz += 16;
2054: r->rstack = mandoc_reallocarray(r->rstack,
2055: r->rstacksz, sizeof(int));
1.35 schwarze 2056: }
1.71 schwarze 2057: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2058: }
1.5 schwarze 2059:
2060: /* If the parent has false as its rule, then so do we. */
2061:
1.71 schwarze 2062: if (r->last->parent && !r->last->parent->rule)
2063: r->last->rule = 0;
1.5 schwarze 2064:
2065: /*
1.46 schwarze 2066: * Determine scope.
2067: * If there is nothing on the line after the conditional,
2068: * not even whitespace, use next-line scope.
1.5 schwarze 2069: */
1.2 schwarze 2070:
1.110 schwarze 2071: if (buf->buf[pos] == '\0') {
1.46 schwarze 2072: r->last->endspan = 2;
2073: goto out;
2074: }
2075:
1.110 schwarze 2076: while (buf->buf[pos] == ' ')
1.46 schwarze 2077: pos++;
2078:
2079: /* An opening brace requests multiline scope. */
1.2 schwarze 2080:
1.110 schwarze 2081: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2082: r->last->endspan = -1;
2083: pos += 2;
1.144 schwarze 2084: while (buf->buf[pos] == ' ')
2085: pos++;
1.46 schwarze 2086: goto out;
1.80 schwarze 2087: }
1.2 schwarze 2088:
2089: /*
1.46 schwarze 2090: * Anything else following the conditional causes
2091: * single-line scope. Warn if the scope contains
2092: * nothing but trailing whitespace.
1.2 schwarze 2093: */
2094:
1.110 schwarze 2095: if (buf->buf[pos] == '\0')
1.89 schwarze 2096: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2097: ln, ppos, roff_name[tok]);
1.2 schwarze 2098:
1.46 schwarze 2099: r->last->endspan = 1;
1.1 schwarze 2100:
1.46 schwarze 2101: out:
1.2 schwarze 2102: *offs = pos;
1.149 schwarze 2103: return ROFF_RERUN;
1.1 schwarze 2104: }
2105:
1.2 schwarze 2106: static enum rofferr
1.7 schwarze 2107: roff_ds(ROFF_ARGS)
2108: {
1.85 schwarze 2109: char *string;
2110: const char *name;
2111: size_t namesz;
1.10 schwarze 2112:
1.123 schwarze 2113: /* Ignore groff compatibility mode for now. */
2114:
2115: if (tok == ROFF_ds1)
2116: tok = ROFF_ds;
2117: else if (tok == ROFF_as1)
2118: tok = ROFF_as;
2119:
1.10 schwarze 2120: /*
1.85 schwarze 2121: * The first word is the name of the string.
2122: * If it is empty or terminated by an escape sequence,
2123: * abort the `ds' request without defining anything.
1.10 schwarze 2124: */
1.7 schwarze 2125:
1.110 schwarze 2126: name = string = buf->buf + pos;
2127: if (*name == '\0')
1.149 schwarze 2128: return ROFF_IGN;
1.7 schwarze 2129:
1.85 schwarze 2130: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2131: if (name[namesz] == '\\')
1.149 schwarze 2132: return ROFF_IGN;
1.85 schwarze 2133:
2134: /* Read past the initial double-quote, if any. */
1.110 schwarze 2135: if (*string == '"')
1.7 schwarze 2136: string++;
2137:
1.10 schwarze 2138: /* The rest is the value. */
1.85 schwarze 2139: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2140: ROFF_as == tok);
1.149 schwarze 2141: return ROFF_IGN;
1.7 schwarze 2142: }
2143:
1.77 schwarze 2144: /*
2145: * Parse a single operator, one or two characters long.
2146: * If the operator is recognized, return success and advance the
2147: * parse point, else return failure and let the parse point unchanged.
2148: */
2149: static int
2150: roff_getop(const char *v, int *pos, char *res)
2151: {
2152:
2153: *res = v[*pos];
2154:
2155: switch (*res) {
1.80 schwarze 2156: case '+':
2157: case '-':
2158: case '*':
2159: case '/':
2160: case '%':
2161: case '&':
2162: case ':':
1.77 schwarze 2163: break;
2164: case '<':
2165: switch (v[*pos + 1]) {
1.80 schwarze 2166: case '=':
1.77 schwarze 2167: *res = 'l';
2168: (*pos)++;
2169: break;
1.80 schwarze 2170: case '>':
1.77 schwarze 2171: *res = '!';
2172: (*pos)++;
2173: break;
1.80 schwarze 2174: case '?':
1.77 schwarze 2175: *res = 'i';
2176: (*pos)++;
2177: break;
2178: default:
2179: break;
2180: }
2181: break;
2182: case '>':
2183: switch (v[*pos + 1]) {
1.80 schwarze 2184: case '=':
1.77 schwarze 2185: *res = 'g';
2186: (*pos)++;
2187: break;
1.80 schwarze 2188: case '?':
1.77 schwarze 2189: *res = 'a';
2190: (*pos)++;
2191: break;
2192: default:
2193: break;
2194: }
2195: break;
2196: case '=':
2197: if ('=' == v[*pos + 1])
2198: (*pos)++;
2199: break;
2200: default:
1.149 schwarze 2201: return 0;
1.77 schwarze 2202: }
2203: (*pos)++;
2204:
1.149 schwarze 2205: return *res;
1.77 schwarze 2206: }
2207:
2208: /*
2209: * Evaluate either a parenthesized numeric expression
2210: * or a single signed integer number.
2211: */
2212: static int
1.106 schwarze 2213: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2214: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2215: {
2216:
2217: if ('(' != v[*pos])
1.149 schwarze 2218: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2219:
2220: (*pos)++;
1.133 schwarze 2221: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2222: return 0;
1.77 schwarze 2223:
1.79 schwarze 2224: /*
2225: * Omission of the closing parenthesis
2226: * is an error in validation mode,
2227: * but ignored in evaluation mode.
2228: */
2229:
1.77 schwarze 2230: if (')' == v[*pos])
2231: (*pos)++;
1.79 schwarze 2232: else if (NULL == res)
1.149 schwarze 2233: return 0;
1.77 schwarze 2234:
1.149 schwarze 2235: return 1;
1.77 schwarze 2236: }
2237:
2238: /*
2239: * Evaluate a complete numeric expression.
2240: * Proceed left to right, there is no concept of precedence.
2241: */
2242: static int
1.106 schwarze 2243: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2244: int *pos, int *res, int flags)
1.77 schwarze 2245: {
2246: int mypos, operand2;
2247: char operator;
2248:
2249: if (NULL == pos) {
2250: mypos = 0;
2251: pos = &mypos;
2252: }
2253:
1.133 schwarze 2254: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2255: while (isspace((unsigned char)v[*pos]))
2256: (*pos)++;
2257:
1.133 schwarze 2258: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2259: return 0;
1.77 schwarze 2260:
2261: while (1) {
1.133 schwarze 2262: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2263: while (isspace((unsigned char)v[*pos]))
2264: (*pos)++;
2265:
2266: if ( ! roff_getop(v, pos, &operator))
2267: break;
2268:
1.133 schwarze 2269: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2270: while (isspace((unsigned char)v[*pos]))
2271: (*pos)++;
2272:
1.133 schwarze 2273: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2274: return 0;
1.77 schwarze 2275:
1.133 schwarze 2276: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2277: while (isspace((unsigned char)v[*pos]))
2278: (*pos)++;
1.79 schwarze 2279:
2280: if (NULL == res)
2281: continue;
1.77 schwarze 2282:
2283: switch (operator) {
1.80 schwarze 2284: case '+':
1.77 schwarze 2285: *res += operand2;
2286: break;
1.80 schwarze 2287: case '-':
1.77 schwarze 2288: *res -= operand2;
2289: break;
1.80 schwarze 2290: case '*':
1.77 schwarze 2291: *res *= operand2;
2292: break;
1.80 schwarze 2293: case '/':
1.116 schwarze 2294: if (operand2 == 0) {
1.106 schwarze 2295: mandoc_msg(MANDOCERR_DIVZERO,
2296: r->parse, ln, *pos, v);
2297: *res = 0;
2298: break;
2299: }
1.77 schwarze 2300: *res /= operand2;
2301: break;
1.80 schwarze 2302: case '%':
1.116 schwarze 2303: if (operand2 == 0) {
2304: mandoc_msg(MANDOCERR_DIVZERO,
2305: r->parse, ln, *pos, v);
2306: *res = 0;
2307: break;
2308: }
1.77 schwarze 2309: *res %= operand2;
2310: break;
1.80 schwarze 2311: case '<':
1.77 schwarze 2312: *res = *res < operand2;
2313: break;
1.80 schwarze 2314: case '>':
1.77 schwarze 2315: *res = *res > operand2;
2316: break;
1.80 schwarze 2317: case 'l':
1.77 schwarze 2318: *res = *res <= operand2;
2319: break;
1.80 schwarze 2320: case 'g':
1.77 schwarze 2321: *res = *res >= operand2;
2322: break;
1.80 schwarze 2323: case '=':
1.77 schwarze 2324: *res = *res == operand2;
2325: break;
1.80 schwarze 2326: case '!':
1.77 schwarze 2327: *res = *res != operand2;
2328: break;
1.80 schwarze 2329: case '&':
1.77 schwarze 2330: *res = *res && operand2;
2331: break;
1.80 schwarze 2332: case ':':
1.77 schwarze 2333: *res = *res || operand2;
2334: break;
1.80 schwarze 2335: case 'i':
1.77 schwarze 2336: if (operand2 < *res)
2337: *res = operand2;
2338: break;
1.80 schwarze 2339: case 'a':
1.77 schwarze 2340: if (operand2 > *res)
2341: *res = operand2;
2342: break;
2343: default:
2344: abort();
2345: }
2346: }
1.149 schwarze 2347: return 1;
1.77 schwarze 2348: }
2349:
1.138 schwarze 2350: /* --- register management ------------------------------------------------ */
2351:
1.52 schwarze 2352: void
1.60 schwarze 2353: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2354: {
1.52 schwarze 2355: struct roffreg *reg;
2356:
2357: /* Search for an existing register with the same name. */
2358: reg = r->regtab;
2359:
2360: while (reg && strcmp(name, reg->key.p))
2361: reg = reg->next;
1.41 schwarze 2362:
1.52 schwarze 2363: if (NULL == reg) {
2364: /* Create a new register. */
2365: reg = mandoc_malloc(sizeof(struct roffreg));
2366: reg->key.p = mandoc_strdup(name);
2367: reg->key.sz = strlen(name);
1.60 schwarze 2368: reg->val = 0;
1.52 schwarze 2369: reg->next = r->regtab;
2370: r->regtab = reg;
2371: }
2372:
1.60 schwarze 2373: if ('+' == sign)
2374: reg->val += val;
2375: else if ('-' == sign)
2376: reg->val -= val;
2377: else
2378: reg->val = val;
1.41 schwarze 2379: }
2380:
1.65 schwarze 2381: /*
2382: * Handle some predefined read-only number registers.
2383: * For now, return -1 if the requested register is not predefined;
2384: * in case a predefined read-only register having the value -1
2385: * were to turn up, another special value would have to be chosen.
2386: */
2387: static int
1.145 schwarze 2388: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2389: {
2390:
2391: switch (*name) {
1.145 schwarze 2392: case '$': /* Number of arguments of the last macro evaluated. */
1.149 schwarze 2393: return r->argc;
1.80 schwarze 2394: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2395: return 0;
1.80 schwarze 2396: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2397: return 1;
1.80 schwarze 2398: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2399: return 24;
1.80 schwarze 2400: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2401: return 0;
1.80 schwarze 2402: case 'T': /* Some output device is always defined. */
1.149 schwarze 2403: return 1;
1.80 schwarze 2404: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2405: return 40;
1.65 schwarze 2406: default:
1.149 schwarze 2407: return -1;
1.65 schwarze 2408: }
2409: }
2410:
1.53 schwarze 2411: int
1.52 schwarze 2412: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2413: {
1.52 schwarze 2414: struct roffreg *reg;
1.65 schwarze 2415: int val;
2416:
2417: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.145 schwarze 2418: val = roff_getregro(r, name + 1);
1.65 schwarze 2419: if (-1 != val)
1.149 schwarze 2420: return val;
1.65 schwarze 2421: }
1.52 schwarze 2422:
2423: for (reg = r->regtab; reg; reg = reg->next)
2424: if (0 == strcmp(name, reg->key.p))
1.149 schwarze 2425: return reg->val;
1.53 schwarze 2426:
1.149 schwarze 2427: return 0;
1.53 schwarze 2428: }
2429:
2430: static int
2431: roff_getregn(const struct roff *r, const char *name, size_t len)
2432: {
2433: struct roffreg *reg;
1.65 schwarze 2434: int val;
2435:
2436: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2437: val = roff_getregro(r, name + 1);
1.65 schwarze 2438: if (-1 != val)
1.149 schwarze 2439: return val;
1.65 schwarze 2440: }
1.53 schwarze 2441:
2442: for (reg = r->regtab; reg; reg = reg->next)
2443: if (len == reg->key.sz &&
2444: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2445: return reg->val;
1.143 schwarze 2446:
1.149 schwarze 2447: return 0;
1.143 schwarze 2448: }
2449:
2450: static int
2451: roff_hasregn(const struct roff *r, const char *name, size_t len)
2452: {
2453: struct roffreg *reg;
2454: int val;
2455:
2456: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2457: val = roff_getregro(r, name + 1);
1.143 schwarze 2458: if (-1 != val)
1.149 schwarze 2459: return 1;
1.143 schwarze 2460: }
2461:
2462: for (reg = r->regtab; reg; reg = reg->next)
2463: if (len == reg->key.sz &&
2464: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2465: return 1;
1.41 schwarze 2466:
1.149 schwarze 2467: return 0;
1.41 schwarze 2468: }
2469:
1.52 schwarze 2470: static void
2471: roff_freereg(struct roffreg *reg)
1.41 schwarze 2472: {
1.52 schwarze 2473: struct roffreg *old_reg;
1.41 schwarze 2474:
1.52 schwarze 2475: while (NULL != reg) {
2476: free(reg->key.p);
2477: old_reg = reg;
2478: reg = reg->next;
2479: free(old_reg);
2480: }
1.41 schwarze 2481: }
1.7 schwarze 2482:
2483: static enum rofferr
1.6 schwarze 2484: roff_nr(ROFF_ARGS)
1.1 schwarze 2485: {
1.85 schwarze 2486: char *key, *val;
2487: size_t keysz;
1.37 schwarze 2488: int iv;
1.60 schwarze 2489: char sign;
1.6 schwarze 2490:
1.110 schwarze 2491: key = val = buf->buf + pos;
2492: if (*key == '\0')
1.149 schwarze 2493: return ROFF_IGN;
1.85 schwarze 2494:
2495: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2496: if (key[keysz] == '\\')
1.149 schwarze 2497: return ROFF_IGN;
1.85 schwarze 2498: key[keysz] = '\0';
1.6 schwarze 2499:
1.60 schwarze 2500: sign = *val;
1.110 schwarze 2501: if (sign == '+' || sign == '-')
1.60 schwarze 2502: val++;
2503:
1.133 schwarze 2504: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2505: roff_setreg(r, key, iv, sign);
1.1 schwarze 2506:
1.149 schwarze 2507: return ROFF_IGN;
1.76 schwarze 2508: }
2509:
2510: static enum rofferr
2511: roff_rr(ROFF_ARGS)
2512: {
2513: struct roffreg *reg, **prev;
1.85 schwarze 2514: char *name, *cp;
2515: size_t namesz;
1.76 schwarze 2516:
1.110 schwarze 2517: name = cp = buf->buf + pos;
2518: if (*name == '\0')
1.149 schwarze 2519: return ROFF_IGN;
1.85 schwarze 2520: namesz = roff_getname(r, &cp, ln, pos);
2521: name[namesz] = '\0';
1.76 schwarze 2522:
2523: prev = &r->regtab;
2524: while (1) {
2525: reg = *prev;
1.110 schwarze 2526: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2527: break;
2528: prev = ®->next;
2529: }
1.110 schwarze 2530: if (reg != NULL) {
1.76 schwarze 2531: *prev = reg->next;
2532: free(reg->key.p);
2533: free(reg);
2534: }
1.149 schwarze 2535: return ROFF_IGN;
1.29 schwarze 2536: }
2537:
1.138 schwarze 2538: /* --- handler functions for roff requests -------------------------------- */
2539:
1.29 schwarze 2540: static enum rofferr
2541: roff_rm(ROFF_ARGS)
2542: {
2543: const char *name;
2544: char *cp;
1.85 schwarze 2545: size_t namesz;
1.29 schwarze 2546:
1.110 schwarze 2547: cp = buf->buf + pos;
2548: while (*cp != '\0') {
1.85 schwarze 2549: name = cp;
1.110 schwarze 2550: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2551: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.110 schwarze 2552: if (name[namesz] == '\\')
1.85 schwarze 2553: break;
1.29 schwarze 2554: }
1.149 schwarze 2555: return ROFF_IGN;
1.51 schwarze 2556: }
2557:
2558: static enum rofferr
2559: roff_it(ROFF_ARGS)
2560: {
2561: int iv;
2562:
2563: /* Parse the number of lines. */
1.133 schwarze 2564:
2565: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2566: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2567: ln, ppos, buf->buf + 1);
1.149 schwarze 2568: return ROFF_IGN;
1.51 schwarze 2569: }
2570:
1.134 schwarze 2571: while (isspace((unsigned char)buf->buf[pos]))
2572: pos++;
2573:
2574: /*
2575: * Arm the input line trap.
2576: * Special-casing "an-trap" is an ugly workaround to cope
2577: * with DocBook stupidly fiddling with man(7) internals.
2578: */
1.133 schwarze 2579:
1.51 schwarze 2580: roffit_lines = iv;
1.134 schwarze 2581: roffit_macro = mandoc_strdup(iv != 1 ||
2582: strcmp(buf->buf + pos, "an-trap") ?
2583: buf->buf + pos : "br");
1.149 schwarze 2584: return ROFF_IGN;
1.47 schwarze 2585: }
2586:
2587: static enum rofferr
2588: roff_Dd(ROFF_ARGS)
2589: {
2590: const char *const *cp;
2591:
1.99 schwarze 2592: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.47 schwarze 2593: for (cp = __mdoc_reserved; *cp; cp++)
2594: roff_setstr(r, *cp, NULL, 0);
2595:
1.99 schwarze 2596: if (r->format == 0)
2597: r->format = MPARSE_MDOC;
2598:
1.149 schwarze 2599: return ROFF_CONT;
1.47 schwarze 2600: }
2601:
2602: static enum rofferr
2603: roff_TH(ROFF_ARGS)
2604: {
2605: const char *const *cp;
2606:
1.99 schwarze 2607: if ((r->options & MPARSE_QUICK) == 0)
1.47 schwarze 2608: for (cp = __man_reserved; *cp; cp++)
2609: roff_setstr(r, *cp, NULL, 0);
2610:
1.99 schwarze 2611: if (r->format == 0)
2612: r->format = MPARSE_MAN;
2613:
1.149 schwarze 2614: return ROFF_CONT;
1.14 schwarze 2615: }
2616:
2617: static enum rofferr
1.27 schwarze 2618: roff_TE(ROFF_ARGS)
2619: {
2620:
2621: if (NULL == r->tbl)
1.94 schwarze 2622: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2623: ln, ppos, "TE");
1.130 schwarze 2624: else if ( ! tbl_end(&r->tbl)) {
2625: free(buf->buf);
2626: buf->buf = mandoc_strdup(".sp");
2627: buf->sz = 4;
1.149 schwarze 2628: return ROFF_REPARSE;
1.130 schwarze 2629: }
1.149 schwarze 2630: return ROFF_IGN;
1.27 schwarze 2631: }
2632:
2633: static enum rofferr
2634: roff_T_(ROFF_ARGS)
2635: {
2636:
2637: if (NULL == r->tbl)
1.94 schwarze 2638: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2639: ln, ppos, "T&");
1.27 schwarze 2640: else
1.168 ! schwarze 2641: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 2642:
1.149 schwarze 2643: return ROFF_IGN;
1.27 schwarze 2644: }
2645:
1.102 schwarze 2646: /*
2647: * Handle in-line equation delimiters.
2648: */
2649: static enum rofferr
1.110 schwarze 2650: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2651: {
1.105 schwarze 2652: char *cp1, *cp2;
2653: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2654:
1.102 schwarze 2655: /*
2656: * Outside equations, look for an opening delimiter.
2657: * If we are inside an equation, we already know it is
2658: * in-line, or this function wouldn't have been called;
2659: * so look for a closing delimiter.
2660: */
2661:
1.110 schwarze 2662: cp1 = buf->buf + pos;
1.102 schwarze 2663: cp2 = strchr(cp1, r->eqn == NULL ?
2664: r->last_eqn->odelim : r->last_eqn->cdelim);
2665: if (cp2 == NULL)
1.149 schwarze 2666: return ROFF_CONT;
1.102 schwarze 2667:
1.105 schwarze 2668: *cp2++ = '\0';
2669: bef_pr = bef_nl = aft_nl = aft_pr = "";
2670:
2671: /* Handle preceding text, protecting whitespace. */
2672:
1.110 schwarze 2673: if (*buf->buf != '\0') {
1.105 schwarze 2674: if (r->eqn == NULL)
2675: bef_pr = "\\&";
2676: bef_nl = "\n";
2677: }
2678:
2679: /*
2680: * Prepare replacing the delimiter with an equation macro
2681: * and drop leading white space from the equation.
2682: */
1.102 schwarze 2683:
1.105 schwarze 2684: if (r->eqn == NULL) {
2685: while (*cp2 == ' ')
2686: cp2++;
2687: mac = ".EQ";
2688: } else
2689: mac = ".EN";
2690:
2691: /* Handle following text, protecting whitespace. */
2692:
2693: if (*cp2 != '\0') {
2694: aft_nl = "\n";
2695: if (r->eqn != NULL)
2696: aft_pr = "\\&";
2697: }
2698:
2699: /* Do the actual replacement. */
2700:
1.110 schwarze 2701: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2702: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2703: free(buf->buf);
2704: buf->buf = cp1;
1.102 schwarze 2705:
2706: /* Toggle the in-line state of the eqn subsystem. */
2707:
2708: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2709: return ROFF_REPARSE;
1.41 schwarze 2710: }
2711:
1.107 schwarze 2712: static enum rofferr
2713: roff_EQ(ROFF_ARGS)
1.32 schwarze 2714: {
1.41 schwarze 2715: struct eqn_node *e;
1.32 schwarze 2716:
1.110 schwarze 2717: assert(r->eqn == NULL);
1.107 schwarze 2718: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2719:
1.102 schwarze 2720: if (r->last_eqn) {
1.32 schwarze 2721: r->last_eqn->next = e;
1.102 schwarze 2722: e->delim = r->last_eqn->delim;
2723: e->odelim = r->last_eqn->odelim;
2724: e->cdelim = r->last_eqn->cdelim;
2725: } else
1.32 schwarze 2726: r->first_eqn = r->last_eqn = e;
2727:
2728: r->eqn = r->last_eqn = e;
1.41 schwarze 2729:
1.110 schwarze 2730: if (buf->buf[pos] != '\0')
1.107 schwarze 2731: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2732: ".EQ %s", buf->buf + pos);
1.41 schwarze 2733:
1.149 schwarze 2734: return ROFF_IGN;
1.32 schwarze 2735: }
2736:
2737: static enum rofferr
2738: roff_EN(ROFF_ARGS)
2739: {
2740:
1.94 schwarze 2741: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.149 schwarze 2742: return ROFF_IGN;
1.32 schwarze 2743: }
2744:
2745: static enum rofferr
1.27 schwarze 2746: roff_TS(ROFF_ARGS)
2747: {
1.49 schwarze 2748: struct tbl_node *tbl;
1.27 schwarze 2749:
2750: if (r->tbl) {
1.94 schwarze 2751: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2752: ln, ppos, "TS breaks TS");
1.41 schwarze 2753: tbl_end(&r->tbl);
1.27 schwarze 2754: }
2755:
1.49 schwarze 2756: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2757:
2758: if (r->last_tbl)
1.49 schwarze 2759: r->last_tbl->next = tbl;
1.27 schwarze 2760: else
1.49 schwarze 2761: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2762:
1.49 schwarze 2763: r->tbl = r->last_tbl = tbl;
1.149 schwarze 2764: return ROFF_IGN;
1.123 schwarze 2765: }
2766:
2767: static enum rofferr
1.168 ! schwarze 2768: roff_br(ROFF_ARGS)
1.123 schwarze 2769: {
1.168 ! schwarze 2770: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
! 2771: if (buf->buf[pos] != '\0')
! 2772: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
! 2773: "%s %s", roff_name[tok], buf->buf + pos);
! 2774: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
! 2775: r->man->next = ROFF_NEXT_SIBLING;
! 2776: return ROFF_IGN;
1.27 schwarze 2777: }
2778:
2779: static enum rofferr
1.48 schwarze 2780: roff_cc(ROFF_ARGS)
2781: {
2782: const char *p;
2783:
1.110 schwarze 2784: p = buf->buf + pos;
1.48 schwarze 2785:
1.110 schwarze 2786: if (*p == '\0' || (r->control = *p++) == '.')
1.48 schwarze 2787: r->control = 0;
2788:
1.110 schwarze 2789: if (*p != '\0')
1.132 schwarze 2790: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2791: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 2792:
1.149 schwarze 2793: return ROFF_IGN;
1.48 schwarze 2794: }
2795:
2796: static enum rofferr
1.42 schwarze 2797: roff_tr(ROFF_ARGS)
2798: {
2799: const char *p, *first, *second;
2800: size_t fsz, ssz;
2801: enum mandoc_esc esc;
2802:
1.110 schwarze 2803: p = buf->buf + pos;
1.42 schwarze 2804:
1.110 schwarze 2805: if (*p == '\0') {
1.132 schwarze 2806: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 2807: return ROFF_IGN;
1.42 schwarze 2808: }
2809:
1.110 schwarze 2810: while (*p != '\0') {
1.42 schwarze 2811: fsz = ssz = 1;
2812:
2813: first = p++;
1.110 schwarze 2814: if (*first == '\\') {
1.42 schwarze 2815: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2816: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2817: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2818: ln, (int)(p - buf->buf), first);
1.149 schwarze 2819: return ROFF_IGN;
1.42 schwarze 2820: }
2821: fsz = (size_t)(p - first);
2822: }
2823:
2824: second = p++;
1.110 schwarze 2825: if (*second == '\\') {
1.42 schwarze 2826: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2827: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2828: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2829: ln, (int)(p - buf->buf), second);
1.149 schwarze 2830: return ROFF_IGN;
1.42 schwarze 2831: }
2832: ssz = (size_t)(p - second);
1.110 schwarze 2833: } else if (*second == '\0') {
1.132 schwarze 2834: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2835: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 2836: second = " ";
2837: p--;
2838: }
2839:
2840: if (fsz > 1) {
1.80 schwarze 2841: roff_setstrn(&r->xmbtab, first, fsz,
2842: second, ssz, 0);
1.42 schwarze 2843: continue;
2844: }
2845:
1.110 schwarze 2846: if (r->xtab == NULL)
1.80 schwarze 2847: r->xtab = mandoc_calloc(128,
2848: sizeof(struct roffstr));
1.42 schwarze 2849:
2850: free(r->xtab[(int)*first].p);
2851: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
2852: r->xtab[(int)*first].sz = ssz;
2853: }
2854:
1.149 schwarze 2855: return ROFF_IGN;
1.42 schwarze 2856: }
2857:
2858: static enum rofferr
1.14 schwarze 2859: roff_so(ROFF_ARGS)
2860: {
1.121 schwarze 2861: char *name, *cp;
1.15 schwarze 2862:
1.110 schwarze 2863: name = buf->buf + pos;
1.97 schwarze 2864: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 2865:
1.22 schwarze 2866: /*
2867: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
2868: * opening anything that's not in our cwd or anything beneath
2869: * it. Thus, explicitly disallow traversing up the file-system
2870: * or using absolute paths.
2871: */
2872:
1.110 schwarze 2873: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 2874: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
2875: ".so %s", name);
1.121 schwarze 2876: buf->sz = mandoc_asprintf(&cp,
2877: ".sp\nSee the file %s.\n.sp", name) + 1;
2878: free(buf->buf);
2879: buf->buf = cp;
2880: *offs = 0;
1.149 schwarze 2881: return ROFF_REPARSE;
1.14 schwarze 2882: }
2883:
2884: *offs = pos;
1.149 schwarze 2885: return ROFF_SO;
1.7 schwarze 2886: }
2887:
1.138 schwarze 2888: /* --- user defined strings and macros ------------------------------------ */
2889:
1.16 schwarze 2890: static enum rofferr
2891: roff_userdef(ROFF_ARGS)
1.12 schwarze 2892: {
1.135 schwarze 2893: const char *arg[9], *ap;
1.16 schwarze 2894: char *cp, *n1, *n2;
1.164 schwarze 2895: int expand_count, i, ib, ie;
1.135 schwarze 2896: size_t asz, rsz;
1.12 schwarze 2897:
1.16 schwarze 2898: /*
2899: * Collect pointers to macro argument strings
1.61 schwarze 2900: * and NUL-terminate them.
1.16 schwarze 2901: */
1.135 schwarze 2902:
1.145 schwarze 2903: r->argc = 0;
1.110 schwarze 2904: cp = buf->buf + pos;
1.145 schwarze 2905: for (i = 0; i < 9; i++) {
2906: if (*cp == '\0')
2907: arg[i] = "";
2908: else {
2909: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
2910: r->argc = i + 1;
2911: }
2912: }
1.16 schwarze 2913:
2914: /*
2915: * Expand macro arguments.
1.12 schwarze 2916: */
1.135 schwarze 2917:
2918: buf->sz = strlen(r->current_string) + 1;
1.164 schwarze 2919: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.135 schwarze 2920: memcpy(n1, r->current_string, buf->sz);
1.164 schwarze 2921: expand_count = 0;
1.135 schwarze 2922: while (*cp != '\0') {
2923:
2924: /* Scan ahead for the next argument invocation. */
2925:
2926: if (*cp++ != '\\')
2927: continue;
2928: if (*cp++ != '$')
2929: continue;
1.146 schwarze 2930: if (*cp == '*') { /* \\$* inserts all arguments */
2931: ib = 0;
2932: ie = r->argc - 1;
2933: } else { /* \\$1 .. \\$9 insert one argument */
2934: ib = ie = *cp - '1';
2935: if (ib < 0 || ib > 8)
2936: continue;
2937: }
1.135 schwarze 2938: cp -= 2;
1.164 schwarze 2939:
2940: /*
2941: * Prevent infinite recursion.
2942: */
2943:
2944: if (cp >= n2)
2945: expand_count = 1;
2946: else if (++expand_count > EXPAND_LIMIT) {
2947: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
2948: ln, (int)(cp - n1), NULL);
1.165 schwarze 2949: free(buf->buf);
2950: buf->buf = n1;
1.164 schwarze 2951: return ROFF_IGN;
2952: }
1.135 schwarze 2953:
2954: /*
2955: * Determine the size of the expanded argument,
2956: * taking escaping of quotes into account.
2957: */
2958:
1.146 schwarze 2959: asz = ie > ib ? ie - ib : 0; /* for blanks */
2960: for (i = ib; i <= ie; i++) {
2961: for (ap = arg[i]; *ap != '\0'; ap++) {
2962: asz++;
2963: if (*ap == '"')
2964: asz += 3;
2965: }
1.135 schwarze 2966: }
2967: if (asz != 3) {
2968:
2969: /*
2970: * Determine the size of the rest of the
2971: * unexpanded macro, including the NUL.
2972: */
2973:
2974: rsz = buf->sz - (cp - n1) - 3;
2975:
2976: /*
2977: * When shrinking, move before
2978: * releasing the storage.
2979: */
2980:
2981: if (asz < 3)
2982: memmove(cp + asz, cp + 3, rsz);
2983:
2984: /*
2985: * Resize the storage for the macro
2986: * and readjust the parse pointer.
2987: */
2988:
2989: buf->sz += asz - 3;
2990: n2 = mandoc_realloc(n1, buf->sz);
2991: cp = n2 + (cp - n1);
2992: n1 = n2;
2993:
2994: /*
2995: * When growing, make room
2996: * for the expanded argument.
2997: */
2998:
2999: if (asz > 3)
3000: memmove(cp + asz, cp + 3, rsz);
3001: }
3002:
3003: /* Copy the expanded argument, escaping quotes. */
3004:
3005: n2 = cp;
1.146 schwarze 3006: for (i = ib; i <= ie; i++) {
3007: for (ap = arg[i]; *ap != '\0'; ap++) {
3008: if (*ap == '"') {
3009: memcpy(n2, "\\(dq", 4);
3010: n2 += 4;
3011: } else
3012: *n2++ = *ap;
3013: }
3014: if (i < ie)
3015: *n2++ = ' ';
1.16 schwarze 3016: }
1.12 schwarze 3017: }
3018:
1.16 schwarze 3019: /*
3020: * Replace the macro invocation
3021: * by the expanded macro.
3022: */
1.135 schwarze 3023:
1.110 schwarze 3024: free(buf->buf);
3025: buf->buf = n1;
1.120 schwarze 3026: *offs = 0;
1.16 schwarze 3027:
1.149 schwarze 3028: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3029: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3030: }
1.28 schwarze 3031:
1.85 schwarze 3032: static size_t
1.28 schwarze 3033: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3034: {
3035: char *name, *cp;
1.85 schwarze 3036: size_t namesz;
1.28 schwarze 3037:
3038: name = *cpp;
3039: if ('\0' == *name)
1.149 schwarze 3040: return 0;
1.28 schwarze 3041:
1.85 schwarze 3042: /* Read until end of name and terminate it with NUL. */
3043: for (cp = name; 1; cp++) {
3044: if ('\0' == *cp || ' ' == *cp) {
3045: namesz = cp - name;
3046: break;
3047: }
1.28 schwarze 3048: if ('\\' != *cp)
3049: continue;
1.88 schwarze 3050: namesz = cp - name;
3051: if ('{' == cp[1] || '}' == cp[1])
3052: break;
1.28 schwarze 3053: cp++;
3054: if ('\\' == *cp)
3055: continue;
1.97 schwarze 3056: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3057: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3058: mandoc_escape((const char **)&cp, NULL, NULL);
3059: break;
1.28 schwarze 3060: }
3061:
3062: /* Read past spaces. */
3063: while (' ' == *cp)
3064: cp++;
3065:
3066: *cpp = cp;
1.149 schwarze 3067: return namesz;
1.28 schwarze 3068: }
3069:
1.16 schwarze 3070: /*
3071: * Store *string into the user-defined string called *name.
3072: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3073: * append == 0: replace mode
3074: * append == 1: single-line append mode
3075: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3076: */
1.8 schwarze 3077: static void
1.16 schwarze 3078: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3079: int append)
1.7 schwarze 3080: {
1.42 schwarze 3081:
3082: roff_setstrn(&r->strtab, name, strlen(name), string,
1.80 schwarze 3083: string ? strlen(string) : 0, append);
1.42 schwarze 3084: }
3085:
3086: static void
3087: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3088: const char *string, size_t stringsz, int append)
1.42 schwarze 3089: {
3090: struct roffkv *n;
3091: char *c;
3092: int i;
3093: size_t oldch, newch;
1.7 schwarze 3094:
1.16 schwarze 3095: /* Search for an existing string with the same name. */
1.42 schwarze 3096: n = *r;
3097:
1.84 schwarze 3098: while (n && (namesz != n->key.sz ||
3099: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3100: n = n->next;
1.8 schwarze 3101:
3102: if (NULL == n) {
1.16 schwarze 3103: /* Create a new string table entry. */
1.42 schwarze 3104: n = mandoc_malloc(sizeof(struct roffkv));
3105: n->key.p = mandoc_strndup(name, namesz);
3106: n->key.sz = namesz;
3107: n->val.p = NULL;
3108: n->val.sz = 0;
3109: n->next = *r;
3110: *r = n;
1.66 schwarze 3111: } else if (0 == append) {
1.42 schwarze 3112: free(n->val.p);
3113: n->val.p = NULL;
3114: n->val.sz = 0;
1.16 schwarze 3115: }
3116:
3117: if (NULL == string)
3118: return;
3119:
3120: /*
3121: * One additional byte for the '\n' in multiline mode,
3122: * and one for the terminating '\0'.
3123: */
1.66 schwarze 3124: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3125:
3126: if (NULL == n->val.p) {
3127: n->val.p = mandoc_malloc(newch);
3128: *n->val.p = '\0';
1.16 schwarze 3129: oldch = 0;
3130: } else {
1.42 schwarze 3131: oldch = n->val.sz;
3132: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3133: }
3134:
3135: /* Skip existing content in the destination buffer. */
1.42 schwarze 3136: c = n->val.p + (int)oldch;
1.16 schwarze 3137:
3138: /* Append new content to the destination buffer. */
1.42 schwarze 3139: i = 0;
3140: while (i < (int)stringsz) {
1.16 schwarze 3141: /*
3142: * Rudimentary roff copy mode:
3143: * Handle escaped backslashes.
3144: */
1.42 schwarze 3145: if ('\\' == string[i] && '\\' == string[i + 1])
3146: i++;
3147: *c++ = string[i++];
1.16 schwarze 3148: }
1.8 schwarze 3149:
1.16 schwarze 3150: /* Append terminating bytes. */
1.66 schwarze 3151: if (1 < append)
1.16 schwarze 3152: *c++ = '\n';
1.42 schwarze 3153:
1.16 schwarze 3154: *c = '\0';
1.42 schwarze 3155: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3156: }
3157:
1.8 schwarze 3158: static const char *
3159: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.7 schwarze 3160: {
1.42 schwarze 3161: const struct roffkv *n;
1.64 schwarze 3162: int i;
1.7 schwarze 3163:
1.42 schwarze 3164: for (n = r->strtab; n; n = n->next)
1.80 schwarze 3165: if (0 == strncmp(name, n->key.p, len) &&
3166: '\0' == n->key.p[(int)len])
1.149 schwarze 3167: return n->val.p;
1.64 schwarze 3168:
3169: for (i = 0; i < PREDEFS_MAX; i++)
3170: if (0 == strncmp(name, predefs[i].name, len) &&
3171: '\0' == predefs[i].name[(int)len])
1.149 schwarze 3172: return predefs[i].str;
1.8 schwarze 3173:
1.149 schwarze 3174: return NULL;
1.7 schwarze 3175: }
3176:
1.8 schwarze 3177: static void
1.42 schwarze 3178: roff_freestr(struct roffkv *r)
1.7 schwarze 3179: {
1.42 schwarze 3180: struct roffkv *n, *nn;
1.7 schwarze 3181:
1.42 schwarze 3182: for (n = r; n; n = nn) {
3183: free(n->key.p);
3184: free(n->val.p);
1.7 schwarze 3185: nn = n->next;
3186: free(n);
3187: }
1.27 schwarze 3188: }
1.138 schwarze 3189:
3190: /* --- accessors and utility functions ------------------------------------ */
1.27 schwarze 3191:
3192: const struct tbl_span *
3193: roff_span(const struct roff *r)
3194: {
1.80 schwarze 3195:
1.149 schwarze 3196: return r->tbl ? tbl_span(r->tbl) : NULL;
1.32 schwarze 3197: }
3198:
3199: const struct eqn *
3200: roff_eqn(const struct roff *r)
3201: {
1.80 schwarze 3202:
1.149 schwarze 3203: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.42 schwarze 3204: }
3205:
3206: /*
3207: * Duplicate an input string, making the appropriate character
3208: * conversations (as stipulated by `tr') along the way.
3209: * Returns a heap-allocated string with all the replacements made.
3210: */
3211: char *
3212: roff_strdup(const struct roff *r, const char *p)
3213: {
3214: const struct roffkv *cp;
3215: char *res;
3216: const char *pp;
3217: size_t ssz, sz;
3218: enum mandoc_esc esc;
3219:
3220: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3221: return mandoc_strdup(p);
1.42 schwarze 3222: else if ('\0' == *p)
1.149 schwarze 3223: return mandoc_strdup("");
1.42 schwarze 3224:
3225: /*
3226: * Step through each character looking for term matches
3227: * (remember that a `tr' can be invoked with an escape, which is
3228: * a glyph but the escape is multi-character).
3229: * We only do this if the character hash has been initialised
3230: * and the string is >0 length.
3231: */
3232:
3233: res = NULL;
3234: ssz = 0;
3235:
3236: while ('\0' != *p) {
1.161 schwarze 3237: assert((unsigned int)*p < 128);
3238: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3239: sz = r->xtab[(int)*p].sz;
3240: res = mandoc_realloc(res, ssz + sz + 1);
3241: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3242: ssz += sz;
3243: p++;
3244: continue;
3245: } else if ('\\' != *p) {
3246: res = mandoc_realloc(res, ssz + 2);
3247: res[ssz++] = *p++;
3248: continue;
3249: }
3250:
3251: /* Search for term matches. */
3252: for (cp = r->xmbtab; cp; cp = cp->next)
3253: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3254: break;
3255:
3256: if (NULL != cp) {
3257: /*
3258: * A match has been found.
3259: * Append the match to the array and move
3260: * forward by its keysize.
3261: */
1.80 schwarze 3262: res = mandoc_realloc(res,
3263: ssz + cp->val.sz + 1);
1.42 schwarze 3264: memcpy(res + ssz, cp->val.p, cp->val.sz);
3265: ssz += cp->val.sz;
3266: p += (int)cp->key.sz;
3267: continue;
3268: }
3269:
3270: /*
3271: * Handle escapes carefully: we need to copy
3272: * over just the escape itself, or else we might
3273: * do replacements within the escape itself.
3274: * Make sure to pass along the bogus string.
3275: */
3276: pp = p++;
3277: esc = mandoc_escape(&p, NULL, NULL);
3278: if (ESCAPE_ERROR == esc) {
3279: sz = strlen(pp);
3280: res = mandoc_realloc(res, ssz + sz + 1);
3281: memcpy(res + ssz, pp, sz);
3282: break;
3283: }
1.80 schwarze 3284: /*
3285: * We bail out on bad escapes.
1.42 schwarze 3286: * No need to warn: we already did so when
3287: * roff_res() was called.
3288: */
3289: sz = (int)(p - pp);
3290: res = mandoc_realloc(res, ssz + sz + 1);
3291: memcpy(res + ssz, pp, sz);
3292: ssz += sz;
3293: }
3294:
3295: res[(int)ssz] = '\0';
1.149 schwarze 3296: return res;
1.99 schwarze 3297: }
3298:
3299: int
3300: roff_getformat(const struct roff *r)
3301: {
3302:
1.149 schwarze 3303: return r->format;
1.48 schwarze 3304: }
3305:
3306: /*
1.80 schwarze 3307: * Find out whether a line is a macro line or not.
1.48 schwarze 3308: * If it is, adjust the current position and return one; if it isn't,
3309: * return zero and don't change the current position.
3310: * If the control character has been set with `.cc', then let that grain
3311: * precedence.
3312: * This is slighly contrary to groff, where using the non-breaking
3313: * control character when `cc' has been invoked will cause the
3314: * non-breaking macro contents to be printed verbatim.
3315: */
3316: int
3317: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3318: {
3319: int pos;
3320:
3321: pos = *ppos;
3322:
3323: if (0 != r->control && cp[pos] == r->control)
3324: pos++;
3325: else if (0 != r->control)
1.149 schwarze 3326: return 0;
1.48 schwarze 3327: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3328: pos += 2;
3329: else if ('.' == cp[pos] || '\'' == cp[pos])
3330: pos++;
3331: else
1.149 schwarze 3332: return 0;
1.48 schwarze 3333:
3334: while (' ' == cp[pos] || '\t' == cp[pos])
3335: pos++;
3336:
3337: *ppos = pos;
1.149 schwarze 3338: return 1;
1.1 schwarze 3339: }
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