Annotation of src/usr.bin/mandoc/roff.c, Revision 1.176
1.176 ! schwarze 1: /* $OpenBSD: roff.c,v 1.175 2017/06/04 00:08:56 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 */
1.175 schwarze 100: char escape; /* escape character */
1.1 schwarze 101: };
102:
103: struct roffnode {
1.166 schwarze 104: enum roff_tok tok; /* type of node */
1.1 schwarze 105: struct roffnode *parent; /* up one in stack */
106: int line; /* parse line */
107: int col; /* parse col */
1.16 schwarze 108: char *name; /* node name, e.g. macro name */
1.2 schwarze 109: char *end; /* end-rules: custom token */
110: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 111: int rule; /* current evaluation rule */
1.1 schwarze 112: };
113:
114: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 115: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 116: struct buf *buf, /* input buffer */ \
1.1 schwarze 117: int ln, /* parse line */ \
1.2 schwarze 118: int ppos, /* original pos in buffer */ \
119: int pos, /* current pos in buffer */ \
120: int *offs /* reset offset of buffer data */
1.1 schwarze 121:
122: typedef enum rofferr (*roffproc)(ROFF_ARGS);
123:
124: struct roffmac {
1.2 schwarze 125: roffproc proc; /* process new macro */
126: roffproc text; /* process as child text of macro */
127: roffproc sub; /* process as child of macro */
128: int flags;
129: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 130: };
131:
1.37 schwarze 132: struct predef {
133: const char *name; /* predefined input name */
134: const char *str; /* replacement symbol */
135: };
136:
137: #define PREDEF(__name, __str) \
138: { (__name), (__str) },
139:
1.138 schwarze 140: /* --- function prototypes ------------------------------------------------ */
141:
1.42 schwarze 142: static void roffnode_cleanscope(struct roff *);
143: static void roffnode_pop(struct roff *);
1.166 schwarze 144: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 145: const char *, int, int);
1.2 schwarze 146: static enum rofferr roff_block(ROFF_ARGS);
147: static enum rofferr roff_block_text(ROFF_ARGS);
148: static enum rofferr roff_block_sub(ROFF_ARGS);
1.168 schwarze 149: static enum rofferr roff_br(ROFF_ARGS);
1.2 schwarze 150: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 151: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 152: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 153: static enum rofferr roff_cond(ROFF_ARGS);
154: static enum rofferr roff_cond_text(ROFF_ARGS);
155: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 156: static enum rofferr roff_ds(ROFF_ARGS);
1.175 schwarze 157: static enum rofferr roff_ec(ROFF_ARGS);
158: static enum rofferr roff_eo(ROFF_ARGS);
1.110 schwarze 159: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 160: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 161: static int roff_evalnum(struct roff *, int,
162: const char *, int *, int *, int);
163: static int roff_evalpar(struct roff *, int,
1.133 schwarze 164: const char *, int *, int *, int);
1.71 schwarze 165: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 166: static void roff_free1(struct roff *);
1.52 schwarze 167: static void roff_freereg(struct roffreg *);
1.42 schwarze 168: static void roff_freestr(struct roffkv *);
1.85 schwarze 169: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 170: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 171: static int roff_getop(const char *, int *, char *);
1.53 schwarze 172: static int roff_getregn(const struct roff *,
173: const char *, size_t);
1.145 schwarze 174: static int roff_getregro(const struct roff *,
175: const char *name);
1.80 schwarze 176: static const char *roff_getstrn(const struct roff *,
1.8 schwarze 177: const char *, size_t);
1.143 schwarze 178: static int roff_hasregn(const struct roff *,
179: const char *, size_t);
1.123 schwarze 180: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 181: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 182: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 183: static void roff_man_alloc1(struct roff_man *);
184: static void roff_man_free1(struct roff_man *);
1.172 schwarze 185: static enum rofferr roff_manyarg(ROFF_ARGS);
1.6 schwarze 186: static enum rofferr roff_nr(ROFF_ARGS);
1.169 schwarze 187: static enum rofferr roff_onearg(ROFF_ARGS);
1.166 schwarze 188: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 189: int, int);
1.110 schwarze 190: static enum rofferr roff_parsetext(struct buf *, int, int *);
191: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 192: static enum rofferr roff_rm(ROFF_ARGS);
1.76 schwarze 193: static enum rofferr roff_rr(ROFF_ARGS);
1.8 schwarze 194: static void roff_setstr(struct roff *,
1.16 schwarze 195: const char *, const char *, int);
1.80 schwarze 196: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 197: size_t, const char *, size_t, int);
1.14 schwarze 198: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 199: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 200: static enum rofferr roff_Dd(ROFF_ARGS);
201: static enum rofferr roff_TH(ROFF_ARGS);
1.27 schwarze 202: static enum rofferr roff_TE(ROFF_ARGS);
203: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 204: static enum rofferr roff_EQ(ROFF_ARGS);
205: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 206: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 207: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 208: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 209:
1.138 schwarze 210: /* --- constant data ------------------------------------------------------ */
211:
1.133 schwarze 212: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
213: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
214:
1.166 schwarze 215: const char *__roff_name[MAN_MAX + 1] = {
1.176 ! schwarze 216: "br", "ft", "ll", "mc",
! 217: "sp", "ta", "ti", NULL,
1.166 schwarze 218: "ab", "ad", "af", "aln",
219: "als", "am", "am1", "ami",
220: "ami1", "as", "as1", "asciify",
221: "backtrace", "bd", "bleedat", "blm",
222: "box", "boxa", "bp", "BP",
223: "break", "breakchar", "brnl", "brp",
224: "brpnl", "c2", "cc", "ce",
225: "cf", "cflags", "ch", "char",
226: "chop", "class", "close", "CL",
227: "color", "composite", "continue", "cp",
228: "cropat", "cs", "cu", "da",
229: "dch", "Dd", "de", "de1",
230: "defcolor", "dei", "dei1", "device",
231: "devicem", "di", "do", "ds",
232: "ds1", "dwh", "dt", "ec",
233: "ecr", "ecs", "el", "em",
234: "EN", "eo", "EP", "EQ",
235: "errprint", "ev", "evc", "ex",
236: "fallback", "fam", "fc", "fchar",
237: "fcolor", "fdeferlig", "feature", "fkern",
238: "fl", "flig", "fp", "fps",
239: "fschar", "fspacewidth", "fspecial", "ftr",
240: "fzoom", "gcolor", "hc", "hcode",
241: "hidechar", "hla", "hlm", "hpf",
242: "hpfa", "hpfcode", "hw", "hy",
243: "hylang", "hylen", "hym", "hypp",
244: "hys", "ie", "if", "ig",
245: "index", "it", "itc", "IX",
246: "kern", "kernafter", "kernbefore", "kernpair",
247: "lc", "lc_ctype", "lds", "length",
248: "letadj", "lf", "lg", "lhang",
249: "linetabs", "lnr", "lnrf", "lpfx",
1.176 ! schwarze 250: "ls", "lsm", "lt",
1.166 schwarze 251: "mediasize", "minss", "mk", "mso",
252: "na", "ne", "nh", "nhychar",
253: "nm", "nn", "nop", "nr",
254: "nrf", "nroff", "ns", "nx",
255: "open", "opena", "os", "output",
256: "padj", "papersize", "pc", "pev",
257: "pi", "PI", "pl", "pm",
258: "pn", "pnr", "po", "ps",
259: "psbb", "pshape", "pso", "ptr",
260: "pvs", "rchar", "rd", "recursionlimit",
261: "return", "rfschar", "rhang", "rj",
262: "rm", "rn", "rnn", "rr",
263: "rs", "rt", "schar", "sentchar",
264: "shc", "shift", "sizes", "so",
265: "spacewidth", "special", "spreadwarn", "ss",
266: "sty", "substring", "sv", "sy",
1.172 schwarze 267: "T&", "tc", "TE",
1.173 schwarze 268: "TH", "tkf", "tl",
1.166 schwarze 269: "tm", "tm1", "tmc", "tr",
270: "track", "transchar", "trf", "trimat",
271: "trin", "trnt", "troff", "TS",
272: "uf", "ul", "unformat", "unwatch",
273: "unwatchn", "vpt", "vs", "warn",
274: "warnscale", "watch", "watchlength", "watchn",
275: "wh", "while", "write", "writec",
276: "writem", "xflag", ".", NULL,
277: "text",
278: "Dd", "Dt", "Os", "Sh",
279: "Ss", "Pp", "D1", "Dl",
280: "Bd", "Ed", "Bl", "El",
281: "It", "Ad", "An", "Ap",
282: "Ar", "Cd", "Cm", "Dv",
283: "Er", "Ev", "Ex", "Fa",
284: "Fd", "Fl", "Fn", "Ft",
285: "Ic", "In", "Li", "Nd",
286: "Nm", "Op", "Ot", "Pa",
287: "Rv", "St", "Va", "Vt",
288: "Xr", "%A", "%B", "%D",
289: "%I", "%J", "%N", "%O",
290: "%P", "%R", "%T", "%V",
291: "Ac", "Ao", "Aq", "At",
292: "Bc", "Bf", "Bo", "Bq",
293: "Bsx", "Bx", "Db", "Dc",
294: "Do", "Dq", "Ec", "Ef",
295: "Em", "Eo", "Fx", "Ms",
296: "No", "Ns", "Nx", "Ox",
297: "Pc", "Pf", "Po", "Pq",
298: "Qc", "Ql", "Qo", "Qq",
299: "Re", "Rs", "Sc", "So",
300: "Sq", "Sm", "Sx", "Sy",
301: "Tn", "Ux", "Xc", "Xo",
302: "Fo", "Fc", "Oo", "Oc",
303: "Bk", "Ek", "Bt", "Hf",
304: "Fr", "Ud", "Lb", "Lp",
305: "Lk", "Mt", "Brq", "Bro",
306: "Brc", "%C", "Es", "En",
1.171 schwarze 307: "Dx", "%Q", "%U", "Ta",
308: NULL,
1.166 schwarze 309: "TH", "SH", "SS", "TP",
310: "LP", "PP", "P", "IP",
311: "HP", "SM", "SB", "BI",
312: "IB", "BR", "RB", "R",
313: "B", "I", "IR", "RI",
1.171 schwarze 314: "nf", "fi",
1.166 schwarze 315: "RE", "RS", "DT", "UC",
1.169 schwarze 316: "PD", "AT", "in",
1.166 schwarze 317: "OP", "EX", "EE", "UR",
1.170 schwarze 318: "UE", NULL
1.166 schwarze 319: };
320: const char *const *roff_name = __roff_name;
321:
322: static struct roffmac roffs[TOKEN_NONE] = {
1.168 schwarze 323: { roff_br, NULL, NULL, 0 }, /* br */
1.169 schwarze 324: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 325: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 ! schwarze 326: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.171 schwarze 327: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 328: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 329: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 330: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 331: { roff_unsupp, NULL, NULL, 0 }, /* ab */
332: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
333: { roff_line_ignore, NULL, NULL, 0 }, /* af */
334: { roff_unsupp, NULL, NULL, 0 }, /* aln */
335: { roff_unsupp, NULL, NULL, 0 }, /* als */
336: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
337: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
338: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
339: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
340: { roff_ds, NULL, NULL, 0 }, /* as */
341: { roff_ds, NULL, NULL, 0 }, /* as1 */
342: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
343: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
344: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
345: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
346: { roff_unsupp, NULL, NULL, 0 }, /* blm */
347: { roff_unsupp, NULL, NULL, 0 }, /* box */
348: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
349: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
350: { roff_unsupp, NULL, NULL, 0 }, /* BP */
351: { roff_unsupp, NULL, NULL, 0 }, /* break */
352: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
353: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 schwarze 354: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 355: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
356: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
357: { roff_cc, NULL, NULL, 0 }, /* cc */
358: { roff_line_ignore, NULL, NULL, 0 }, /* ce */
359: { roff_insec, NULL, NULL, 0 }, /* cf */
360: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
361: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
362: { roff_unsupp, NULL, NULL, 0 }, /* char */
363: { roff_unsupp, NULL, NULL, 0 }, /* chop */
364: { roff_line_ignore, NULL, NULL, 0 }, /* class */
365: { roff_insec, NULL, NULL, 0 }, /* close */
366: { roff_unsupp, NULL, NULL, 0 }, /* CL */
367: { roff_line_ignore, NULL, NULL, 0 }, /* color */
368: { roff_unsupp, NULL, NULL, 0 }, /* composite */
369: { roff_unsupp, NULL, NULL, 0 }, /* continue */
370: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
371: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
372: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
373: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
374: { roff_unsupp, NULL, NULL, 0 }, /* da */
375: { roff_unsupp, NULL, NULL, 0 }, /* dch */
376: { roff_Dd, NULL, NULL, 0 }, /* Dd */
377: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
378: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
379: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
380: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
381: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
382: { roff_unsupp, NULL, NULL, 0 }, /* device */
383: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
384: { roff_unsupp, NULL, NULL, 0 }, /* di */
385: { roff_unsupp, NULL, NULL, 0 }, /* do */
386: { roff_ds, NULL, NULL, 0 }, /* ds */
387: { roff_ds, NULL, NULL, 0 }, /* ds1 */
388: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
389: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 390: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 391: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
392: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
393: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
394: { roff_unsupp, NULL, NULL, 0 }, /* em */
395: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 396: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 397: { roff_unsupp, NULL, NULL, 0 }, /* EP */
398: { roff_EQ, NULL, NULL, 0 }, /* EQ */
399: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
400: { roff_unsupp, NULL, NULL, 0 }, /* ev */
401: { roff_unsupp, NULL, NULL, 0 }, /* evc */
402: { roff_unsupp, NULL, NULL, 0 }, /* ex */
403: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
404: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
405: { roff_unsupp, NULL, NULL, 0 }, /* fc */
406: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
407: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
408: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
409: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
410: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
411: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
412: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
413: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
414: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
415: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
416: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
417: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
418: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
419: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
420: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
421: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
422: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
423: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
424: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
425: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
426: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
427: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
428: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
429: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
430: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
431: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
432: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
433: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
434: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
435: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
436: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
437: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
438: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
439: { roff_unsupp, NULL, NULL, 0 }, /* index */
440: { roff_it, NULL, NULL, 0 }, /* it */
441: { roff_unsupp, NULL, NULL, 0 }, /* itc */
442: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
443: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
444: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
445: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
446: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
447: { roff_unsupp, NULL, NULL, 0 }, /* lc */
448: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
449: { roff_unsupp, NULL, NULL, 0 }, /* lds */
450: { roff_unsupp, NULL, NULL, 0 }, /* length */
451: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
452: { roff_insec, NULL, NULL, 0 }, /* lf */
453: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
454: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
455: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
456: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
457: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
458: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
459: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
460: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
461: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
462: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
463: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
464: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
465: { roff_insec, NULL, NULL, 0 }, /* mso */
466: { roff_line_ignore, NULL, NULL, 0 }, /* na */
467: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
468: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
469: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
470: { roff_unsupp, NULL, NULL, 0 }, /* nm */
471: { roff_unsupp, NULL, NULL, 0 }, /* nn */
472: { roff_unsupp, NULL, NULL, 0 }, /* nop */
473: { roff_nr, NULL, NULL, 0 }, /* nr */
474: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
475: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
476: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
477: { roff_insec, NULL, NULL, 0 }, /* nx */
478: { roff_insec, NULL, NULL, 0 }, /* open */
479: { roff_insec, NULL, NULL, 0 }, /* opena */
480: { roff_line_ignore, NULL, NULL, 0 }, /* os */
481: { roff_unsupp, NULL, NULL, 0 }, /* output */
482: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
483: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
484: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
485: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
486: { roff_insec, NULL, NULL, 0 }, /* pi */
487: { roff_unsupp, NULL, NULL, 0 }, /* PI */
488: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
489: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
490: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
491: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
492: { roff_line_ignore, NULL, NULL, 0 }, /* po */
493: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
494: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
495: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
496: { roff_insec, NULL, NULL, 0 }, /* pso */
497: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
498: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
499: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
500: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
501: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
502: { roff_unsupp, NULL, NULL, 0 }, /* return */
503: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
504: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
505: { roff_line_ignore, NULL, NULL, 0 }, /* rj */
506: { roff_rm, NULL, NULL, 0 }, /* rm */
507: { roff_unsupp, NULL, NULL, 0 }, /* rn */
508: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
509: { roff_rr, NULL, NULL, 0 }, /* rr */
510: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
511: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
512: { roff_unsupp, NULL, NULL, 0 }, /* schar */
513: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
514: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
515: { roff_unsupp, NULL, NULL, 0 }, /* shift */
516: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
517: { roff_so, NULL, NULL, 0 }, /* so */
518: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
519: { roff_line_ignore, NULL, NULL, 0 }, /* special */
520: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
521: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
522: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
523: { roff_unsupp, NULL, NULL, 0 }, /* substring */
524: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
525: { roff_insec, NULL, NULL, 0 }, /* sy */
526: { roff_T_, NULL, NULL, 0 }, /* T& */
527: { roff_unsupp, NULL, NULL, 0 }, /* tc */
528: { roff_TE, NULL, NULL, 0 }, /* TE */
529: { roff_TH, NULL, NULL, 0 }, /* TH */
530: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
531: { roff_unsupp, NULL, NULL, 0 }, /* tl */
532: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
533: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
534: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
535: { roff_tr, NULL, NULL, 0 }, /* tr */
536: { roff_line_ignore, NULL, NULL, 0 }, /* track */
537: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
538: { roff_insec, NULL, NULL, 0 }, /* trf */
539: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
540: { roff_unsupp, NULL, NULL, 0 }, /* trin */
541: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
542: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
543: { roff_TS, NULL, NULL, 0 }, /* TS */
544: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
545: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
546: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
547: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
548: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
549: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
550: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
551: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
552: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
553: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
554: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
555: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
556: { roff_unsupp, NULL, NULL, 0 }, /* wh */
557: { roff_unsupp, NULL, NULL, 0 }, /* while */
558: { roff_insec, NULL, NULL, 0 }, /* write */
559: { roff_insec, NULL, NULL, 0 }, /* writec */
560: { roff_insec, NULL, NULL, 0 }, /* writem */
561: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
562: { roff_cblock, NULL, NULL, 0 }, /* . */
563: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 564: };
565:
1.73 schwarze 566: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.47 schwarze 567: const char *const __mdoc_reserved[] = {
568: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
569: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
570: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
571: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.73 schwarze 572: "Dt", "Dv", "Dx", "D1",
573: "Ec", "Ed", "Ef", "Ek", "El", "Em",
574: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.47 schwarze 575: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.73 schwarze 576: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
577: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.47 schwarze 578: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.73 schwarze 579: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
580: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
581: "Sc", "Sh", "Sm", "So", "Sq",
1.47 schwarze 582: "Ss", "St", "Sx", "Sy",
583: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.73 schwarze 584: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.47 schwarze 585: "%P", "%Q", "%R", "%T", "%U", "%V",
586: NULL
587: };
588:
1.73 schwarze 589: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.47 schwarze 590: const char *const __man_reserved[] = {
1.73 schwarze 591: "AT", "B", "BI", "BR", "DT",
592: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
593: "LP", "OP", "P", "PD", "PP",
594: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
595: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.47 schwarze 596: NULL
597: };
598:
1.37 schwarze 599: /* Array of injected predefined strings. */
600: #define PREDEFS_MAX 38
601: static const struct predef predefs[PREDEFS_MAX] = {
602: #include "predefs.in"
603: };
604:
1.51 schwarze 605: static int roffit_lines; /* number of lines to delay */
606: static char *roffit_macro; /* nil-terminated macro line */
607:
1.80 schwarze 608:
1.138 schwarze 609: /* --- request table ------------------------------------------------------ */
610:
1.167 schwarze 611: struct ohash *
612: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 613: {
1.167 schwarze 614: struct ohash *htab;
615: struct roffreq *req;
616: enum roff_tok tok;
617: size_t sz;
618: unsigned int slot;
1.3 schwarze 619:
1.167 schwarze 620: htab = mandoc_malloc(sizeof(*htab));
621: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 622:
1.167 schwarze 623: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 624: if (roff_name[tok] == NULL)
625: continue;
1.167 schwarze 626: sz = strlen(roff_name[tok]);
627: req = mandoc_malloc(sizeof(*req) + sz + 1);
628: req->tok = tok;
629: memcpy(req->name, roff_name[tok], sz + 1);
630: slot = ohash_qlookup(htab, req->name);
631: ohash_insert(htab, slot, req);
1.3 schwarze 632: }
1.167 schwarze 633: return htab;
1.3 schwarze 634: }
635:
1.167 schwarze 636: void
637: roffhash_free(struct ohash *htab)
1.1 schwarze 638: {
1.167 schwarze 639: struct roffreq *req;
640: unsigned int slot;
1.1 schwarze 641:
1.167 schwarze 642: if (htab == NULL)
643: return;
644: for (req = ohash_first(htab, &slot); req != NULL;
645: req = ohash_next(htab, &slot))
646: free(req);
647: ohash_delete(htab);
648: free(htab);
649: }
650:
651: enum roff_tok
652: roffhash_find(struct ohash *htab, const char *name, size_t sz)
653: {
654: struct roffreq *req;
655: const char *end;
656:
657: if (sz) {
658: end = name + sz;
659: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
660: } else
661: req = ohash_find(htab, ohash_qlookup(htab, name));
662: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 663: }
664:
1.138 schwarze 665: /* --- stack of request blocks -------------------------------------------- */
666:
1.1 schwarze 667: /*
668: * Pop the current node off of the stack of roff instructions currently
669: * pending.
670: */
671: static void
672: roffnode_pop(struct roff *r)
673: {
674: struct roffnode *p;
675:
1.2 schwarze 676: assert(r->last);
1.80 schwarze 677: p = r->last;
1.2 schwarze 678:
679: r->last = r->last->parent;
1.16 schwarze 680: free(p->name);
681: free(p->end);
1.1 schwarze 682: free(p);
683: }
684:
685: /*
686: * Push a roff node onto the instruction stack. This must later be
687: * removed with roffnode_pop().
688: */
1.11 schwarze 689: static void
1.166 schwarze 690: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 691: int line, int col)
1.1 schwarze 692: {
693: struct roffnode *p;
694:
1.11 schwarze 695: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 696: p->tok = tok;
1.16 schwarze 697: if (name)
698: p->name = mandoc_strdup(name);
1.1 schwarze 699: p->parent = r->last;
700: p->line = line;
701: p->col = col;
1.71 schwarze 702: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 703:
704: r->last = p;
705: }
706:
1.138 schwarze 707: /* --- roff parser state data management ---------------------------------- */
708:
1.1 schwarze 709: static void
710: roff_free1(struct roff *r)
711: {
1.49 schwarze 712: struct tbl_node *tbl;
1.32 schwarze 713: struct eqn_node *e;
1.42 schwarze 714: int i;
1.27 schwarze 715:
1.49 schwarze 716: while (NULL != (tbl = r->first_tbl)) {
717: r->first_tbl = tbl->next;
718: tbl_free(tbl);
1.27 schwarze 719: }
720: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 721:
1.32 schwarze 722: while (NULL != (e = r->first_eqn)) {
723: r->first_eqn = e->next;
724: eqn_free(e);
725: }
726: r->first_eqn = r->last_eqn = r->eqn = NULL;
727:
1.1 schwarze 728: while (r->last)
729: roffnode_pop(r);
1.27 schwarze 730:
1.96 schwarze 731: free (r->rstack);
732: r->rstack = NULL;
733: r->rstacksz = 0;
734: r->rstackpos = -1;
735:
736: roff_freereg(r->regtab);
737: r->regtab = NULL;
738:
1.42 schwarze 739: roff_freestr(r->strtab);
740: roff_freestr(r->xmbtab);
741: r->strtab = r->xmbtab = NULL;
742:
743: if (r->xtab)
744: for (i = 0; i < 128; i++)
745: free(r->xtab[i].p);
746: free(r->xtab);
747: r->xtab = NULL;
1.1 schwarze 748: }
749:
750: void
751: roff_reset(struct roff *r)
752: {
753: roff_free1(r);
1.99 schwarze 754: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 755: r->control = '\0';
756: r->escape = '\\';
1.1 schwarze 757: }
758:
759: void
760: roff_free(struct roff *r)
761: {
762: roff_free1(r);
1.167 schwarze 763: roffhash_free(r->reqtab);
1.1 schwarze 764: free(r);
765: }
766:
767: struct roff *
1.151 schwarze 768: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 769: {
770: struct roff *r;
771:
1.11 schwarze 772: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 773: r->parse = parse;
1.167 schwarze 774: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.72 schwarze 775: r->options = options;
1.99 schwarze 776: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 777: r->rstackpos = -1;
1.175 schwarze 778: r->escape = '\\';
1.149 schwarze 779: return r;
1.137 schwarze 780: }
781:
1.138 schwarze 782: /* --- syntax tree state data management ---------------------------------- */
783:
1.137 schwarze 784: static void
785: roff_man_free1(struct roff_man *man)
786: {
787:
1.138 schwarze 788: if (man->first != NULL)
789: roff_node_delete(man, man->first);
1.137 schwarze 790: free(man->meta.msec);
791: free(man->meta.vol);
792: free(man->meta.os);
793: free(man->meta.arch);
794: free(man->meta.title);
795: free(man->meta.name);
796: free(man->meta.date);
797: }
798:
799: static void
800: roff_man_alloc1(struct roff_man *man)
801: {
802:
803: memset(&man->meta, 0, sizeof(man->meta));
804: man->first = mandoc_calloc(1, sizeof(*man->first));
805: man->first->type = ROFFT_ROOT;
806: man->last = man->first;
807: man->last_es = NULL;
808: man->flags = 0;
809: man->macroset = MACROSET_NONE;
810: man->lastsec = man->lastnamed = SEC_NONE;
811: man->next = ROFF_NEXT_CHILD;
812: }
813:
814: void
815: roff_man_reset(struct roff_man *man)
816: {
817:
818: roff_man_free1(man);
819: roff_man_alloc1(man);
820: }
821:
822: void
823: roff_man_free(struct roff_man *man)
824: {
825:
826: roff_man_free1(man);
827: free(man);
828: }
829:
830: struct roff_man *
831: roff_man_alloc(struct roff *roff, struct mparse *parse,
832: const char *defos, int quick)
833: {
834: struct roff_man *man;
835:
836: man = mandoc_calloc(1, sizeof(*man));
837: man->parse = parse;
838: man->roff = roff;
839: man->defos = defos;
840: man->quick = quick;
841: roff_man_alloc1(man);
1.168 schwarze 842: roff->man = man;
1.149 schwarze 843: return man;
1.1 schwarze 844: }
845:
1.138 schwarze 846: /* --- syntax tree handling ----------------------------------------------- */
847:
848: struct roff_node *
849: roff_node_alloc(struct roff_man *man, int line, int pos,
850: enum roff_type type, int tok)
851: {
852: struct roff_node *n;
853:
854: n = mandoc_calloc(1, sizeof(*n));
855: n->line = line;
856: n->pos = pos;
857: n->tok = tok;
858: n->type = type;
859: n->sec = man->lastsec;
860:
861: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 862: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 863: else
1.157 schwarze 864: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 865: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 866: n->flags |= NODE_LINE;
1.138 schwarze 867: man->flags &= ~MDOC_NEWLINE;
868:
1.149 schwarze 869: return n;
1.138 schwarze 870: }
871:
872: void
873: roff_node_append(struct roff_man *man, struct roff_node *n)
874: {
875:
876: switch (man->next) {
877: case ROFF_NEXT_SIBLING:
1.153 schwarze 878: if (man->last->next != NULL) {
879: n->next = man->last->next;
880: man->last->next->prev = n;
881: } else
882: man->last->parent->last = n;
1.138 schwarze 883: man->last->next = n;
884: n->prev = man->last;
885: n->parent = man->last->parent;
886: break;
887: case ROFF_NEXT_CHILD:
1.159 schwarze 888: if (man->last->child != NULL) {
889: n->next = man->last->child;
890: man->last->child->prev = n;
891: } else
892: man->last->last = n;
1.138 schwarze 893: man->last->child = n;
894: n->parent = man->last;
895: break;
896: default:
897: abort();
898: }
1.154 schwarze 899: man->last = n;
1.138 schwarze 900:
901: switch (n->type) {
902: case ROFFT_HEAD:
903: n->parent->head = n;
904: break;
905: case ROFFT_BODY:
1.154 schwarze 906: if (n->end != ENDBODY_NOT)
907: return;
1.138 schwarze 908: n->parent->body = n;
909: break;
910: case ROFFT_TAIL:
911: n->parent->tail = n;
912: break;
913: default:
1.154 schwarze 914: return;
1.138 schwarze 915: }
1.154 schwarze 916:
917: /*
918: * Copy over the normalised-data pointer of our parent. Not
919: * everybody has one, but copying a null pointer is fine.
920: */
921:
922: n->norm = n->parent->norm;
923: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 924: }
925:
1.139 schwarze 926: void
927: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
928: {
929: struct roff_node *n;
930:
931: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
932: n->string = roff_strdup(man->roff, word);
933: roff_node_append(man, n);
1.158 schwarze 934: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 935: man->next = ROFF_NEXT_SIBLING;
936: }
937:
938: void
939: roff_word_append(struct roff_man *man, const char *word)
940: {
941: struct roff_node *n;
942: char *addstr, *newstr;
943:
944: n = man->last;
945: addstr = roff_strdup(man->roff, word);
946: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
947: free(addstr);
948: free(n->string);
949: n->string = newstr;
950: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 951: }
952:
953: void
954: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
955: {
956: struct roff_node *n;
957:
958: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
959: roff_node_append(man, n);
960: man->next = ROFF_NEXT_CHILD;
961: }
962:
963: struct roff_node *
964: roff_block_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_BLOCK, tok);
969: roff_node_append(man, n);
970: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 971: return n;
1.139 schwarze 972: }
973:
1.138 schwarze 974: struct roff_node *
975: roff_head_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_HEAD, tok);
980: roff_node_append(man, n);
981: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 982: return n;
1.138 schwarze 983: }
984:
985: struct roff_node *
986: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
987: {
988: struct roff_node *n;
989:
990: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
991: roff_node_append(man, n);
992: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 993: return n;
1.139 schwarze 994: }
995:
996: void
997: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
998: {
999: struct roff_node *n;
1000:
1001: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1002: n->eqn = eqn;
1003: if (eqn->ln > man->last->line)
1.157 schwarze 1004: n->flags |= NODE_LINE;
1.139 schwarze 1005: roff_node_append(man, n);
1006: man->next = ROFF_NEXT_SIBLING;
1007: }
1008:
1009: void
1010: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1011: {
1012: struct roff_node *n;
1013:
1014: if (man->macroset == MACROSET_MAN)
1.174 schwarze 1015: man_breakscope(man, ROFF_TS);
1.139 schwarze 1016: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1017: n->span = tbl;
1018: roff_node_append(man, n);
1.158 schwarze 1019: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 1020: man->next = ROFF_NEXT_SIBLING;
1.138 schwarze 1021: }
1022:
1023: void
1024: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1025: {
1026:
1027: /* Adjust siblings. */
1028:
1029: if (n->prev)
1030: n->prev->next = n->next;
1031: if (n->next)
1032: n->next->prev = n->prev;
1033:
1034: /* Adjust parent. */
1035:
1036: if (n->parent != NULL) {
1037: if (n->parent->child == n)
1038: n->parent->child = n->next;
1039: if (n->parent->last == n)
1040: n->parent->last = n->prev;
1041: }
1042:
1043: /* Adjust parse point. */
1044:
1045: if (man == NULL)
1046: return;
1047: if (man->last == n) {
1048: if (n->prev == NULL) {
1049: man->last = n->parent;
1050: man->next = ROFF_NEXT_CHILD;
1051: } else {
1052: man->last = n->prev;
1053: man->next = ROFF_NEXT_SIBLING;
1054: }
1055: }
1056: if (man->first == n)
1057: man->first = NULL;
1058: }
1059:
1060: void
1061: roff_node_free(struct roff_node *n)
1062: {
1063:
1064: if (n->args != NULL)
1065: mdoc_argv_free(n->args);
1066: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1067: free(n->norm);
1068: free(n->string);
1069: free(n);
1070: }
1071:
1072: void
1073: roff_node_delete(struct roff_man *man, struct roff_node *n)
1074: {
1075:
1076: while (n->child != NULL)
1077: roff_node_delete(man, n->child);
1078: roff_node_unlink(man, n);
1079: roff_node_free(n);
1.141 schwarze 1080: }
1081:
1082: void
1083: deroff(char **dest, const struct roff_node *n)
1084: {
1085: char *cp;
1086: size_t sz;
1087:
1088: if (n->type != ROFFT_TEXT) {
1089: for (n = n->child; n != NULL; n = n->next)
1090: deroff(dest, n);
1091: return;
1092: }
1093:
1.160 schwarze 1094: /* Skip leading whitespace. */
1.141 schwarze 1095:
1.160 schwarze 1096: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1097: if (cp[0] == '\\' && cp[1] != '\0' &&
1098: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1099: cp++;
1.160 schwarze 1100: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1101: break;
1102: }
1103:
1.161 schwarze 1104: /* Skip trailing backslash. */
1105:
1106: sz = strlen(cp);
1.162 schwarze 1107: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1108: sz--;
1109:
1.141 schwarze 1110: /* Skip trailing whitespace. */
1111:
1.161 schwarze 1112: for (; sz; sz--)
1.141 schwarze 1113: if ( ! isspace((unsigned char)cp[sz-1]))
1114: break;
1115:
1116: /* Skip empty strings. */
1117:
1118: if (sz == 0)
1119: return;
1120:
1121: if (*dest == NULL) {
1122: *dest = mandoc_strndup(cp, sz);
1123: return;
1124: }
1125:
1126: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1127: free(*dest);
1128: *dest = cp;
1.138 schwarze 1129: }
1130:
1131: /* --- main functions of the roff parser ---------------------------------- */
1132:
1.8 schwarze 1133: /*
1.79 schwarze 1134: * In the current line, expand escape sequences that tend to get
1135: * used in numerical expressions and conditional requests.
1136: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1137: */
1.45 schwarze 1138: static enum rofferr
1.110 schwarze 1139: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1140: {
1.81 schwarze 1141: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1142: const char *start; /* start of the string to process */
1.82 schwarze 1143: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1144: const char *stnam; /* start of the name, after "[(*" */
1145: const char *cp; /* end of the name, e.g. before ']' */
1146: const char *res; /* the string to be substituted */
1.110 schwarze 1147: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1148: size_t maxl; /* expected length of the escape name */
1149: size_t naml; /* actual length of the escape name */
1.109 schwarze 1150: enum mandoc_esc esc; /* type of the escape sequence */
1151: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1152: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1153: int npos; /* position in numeric expression */
1.91 schwarze 1154: int arg_complete; /* argument not interrupted by eol */
1.175 schwarze 1155: int done; /* no more input available */
1.79 schwarze 1156: char term; /* character terminating the escape */
1.8 schwarze 1157:
1.175 schwarze 1158: /* Search forward for comments. */
1159:
1160: done = 0;
1161: start = buf->buf + pos;
1162: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1163: if (stesc[0] != r->escape || stesc[1] == '\0')
1164: continue;
1165: stesc++;
1166: if (*stesc != '"' && *stesc != '#')
1167: continue;
1168: cp = strchr(stesc--, '\0') - 1;
1169: if (*cp == '\n') {
1170: done = 1;
1171: cp--;
1172: }
1173: if (*cp == ' ' || *cp == '\t')
1174: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1175: ln, cp - buf->buf, NULL);
1176: while (stesc > start && stesc[-1] == ' ')
1177: stesc--;
1178: *stesc = '\0';
1179: break;
1180: }
1181: if (stesc == start)
1182: return ROFF_CONT;
1183: stesc--;
1184:
1185: /* Notice the end of the input. */
1186:
1187: if (*stesc == '\n') {
1188: *stesc-- = '\0';
1189: done = 1;
1190: }
1191:
1.43 schwarze 1192: expand_count = 0;
1.175 schwarze 1193: while (stesc >= start) {
1.43 schwarze 1194:
1.78 schwarze 1195: /* Search backwards for the next backslash. */
1196:
1.175 schwarze 1197: if (*stesc != r->escape) {
1198: if (*stesc == '\\') {
1199: *stesc = '\0';
1200: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1201: buf->buf, stesc + 1) + 1;
1202: start = nbuf + pos;
1203: stesc = nbuf + (stesc - buf->buf);
1204: free(buf->buf);
1205: buf->buf = nbuf;
1206: }
1207: stesc--;
1.78 schwarze 1208: continue;
1.175 schwarze 1209: }
1.78 schwarze 1210:
1211: /* If it is escaped, skip it. */
1212:
1213: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1214: if (*cp != r->escape)
1.78 schwarze 1215: break;
1216:
1.110 schwarze 1217: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1218: while (stesc > cp)
1219: *stesc-- = '\\';
1.78 schwarze 1220: continue;
1.175 schwarze 1221: } else if (stesc[1] != '\0') {
1222: *stesc = '\\';
1223: } else {
1224: *stesc-- = '\0';
1225: if (done)
1226: continue;
1227: else
1228: return ROFF_APPEND;
1.78 schwarze 1229: }
1.23 schwarze 1230:
1.79 schwarze 1231: /* Decide whether to expand or to check only. */
1.23 schwarze 1232:
1.79 schwarze 1233: term = '\0';
1.78 schwarze 1234: cp = stesc + 1;
1.53 schwarze 1235: switch (*cp) {
1.80 schwarze 1236: case '*':
1.53 schwarze 1237: res = NULL;
1238: break;
1.80 schwarze 1239: case 'B':
1240: case 'w':
1.79 schwarze 1241: term = cp[1];
1242: /* FALLTHROUGH */
1.80 schwarze 1243: case 'n':
1.53 schwarze 1244: res = ubuf;
1245: break;
1246: default:
1.109 schwarze 1247: esc = mandoc_escape(&cp, &stnam, &inaml);
1248: if (esc == ESCAPE_ERROR ||
1249: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1250: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1251: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1252: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1253: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1254: stesc--;
1.78 schwarze 1255: continue;
1.42 schwarze 1256: }
1257:
1.78 schwarze 1258: if (EXPAND_LIMIT < ++expand_count) {
1259: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1260: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1261: return ROFF_IGN;
1.78 schwarze 1262: }
1.23 schwarze 1263:
1264: /*
1265: * The third character decides the length
1.53 schwarze 1266: * of the name of the string or register.
1.23 schwarze 1267: * Save a pointer to the name.
1268: */
1269:
1.110 schwarze 1270: if (term == '\0') {
1.79 schwarze 1271: switch (*++cp) {
1.80 schwarze 1272: case '\0':
1.79 schwarze 1273: maxl = 0;
1274: break;
1.80 schwarze 1275: case '(':
1.79 schwarze 1276: cp++;
1277: maxl = 2;
1278: break;
1.80 schwarze 1279: case '[':
1.79 schwarze 1280: cp++;
1281: term = ']';
1282: maxl = 0;
1283: break;
1284: default:
1285: maxl = 1;
1286: break;
1287: }
1288: } else {
1289: cp += 2;
1.8 schwarze 1290: maxl = 0;
1291: }
1.23 schwarze 1292: stnam = cp;
1.8 schwarze 1293:
1.23 schwarze 1294: /* Advance to the end of the name. */
1.8 schwarze 1295:
1.125 schwarze 1296: naml = 0;
1.91 schwarze 1297: arg_complete = 1;
1.125 schwarze 1298: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1299: if (*cp == '\0') {
1.92 schwarze 1300: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1301: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1302: arg_complete = 0;
1.79 schwarze 1303: break;
1.42 schwarze 1304: }
1.110 schwarze 1305: if (maxl == 0 && *cp == term) {
1.79 schwarze 1306: cp++;
1.125 schwarze 1307: break;
1308: }
1309: if (*cp++ != '\\' || stesc[1] != 'w') {
1310: naml++;
1311: continue;
1312: }
1313: switch (mandoc_escape(&cp, NULL, NULL)) {
1314: case ESCAPE_SPECIAL:
1315: case ESCAPE_UNICODE:
1316: case ESCAPE_NUMBERED:
1317: case ESCAPE_OVERSTRIKE:
1318: naml++;
1319: break;
1320: default:
1.8 schwarze 1321: break;
1.79 schwarze 1322: }
1.8 schwarze 1323: }
1324:
1.23 schwarze 1325: /*
1326: * Retrieve the replacement string; if it is
1327: * undefined, resume searching for escapes.
1328: */
1329:
1.79 schwarze 1330: switch (stesc[1]) {
1.80 schwarze 1331: case '*':
1.91 schwarze 1332: if (arg_complete)
1333: res = roff_getstrn(r, stnam, naml);
1.79 schwarze 1334: break;
1.80 schwarze 1335: case 'B':
1.79 schwarze 1336: npos = 0;
1.91 schwarze 1337: ubuf[0] = arg_complete &&
1.133 schwarze 1338: roff_evalnum(r, ln, stnam, &npos,
1339: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1340: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1341: ubuf[1] = '\0';
1342: break;
1.80 schwarze 1343: case 'n':
1.91 schwarze 1344: if (arg_complete)
1345: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1346: roff_getregn(r, stnam, naml));
1347: else
1348: ubuf[0] = '\0';
1.79 schwarze 1349: break;
1.80 schwarze 1350: case 'w':
1.91 schwarze 1351: /* use even incomplete args */
1.81 schwarze 1352: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1353: 24 * (int)naml);
1354: break;
1355: }
1.8 schwarze 1356:
1.110 schwarze 1357: if (res == NULL) {
1.92 schwarze 1358: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1359: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1360: "%.*s", (int)naml, stnam);
1.37 schwarze 1361: res = "";
1.118 schwarze 1362: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1363: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1364: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1365: return ROFF_IGN;
1.8 schwarze 1366: }
1367:
1.23 schwarze 1368: /* Replace the escape sequence by the string. */
1369:
1.82 schwarze 1370: *stesc = '\0';
1.110 schwarze 1371: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1372: buf->buf, res, cp) + 1;
1.8 schwarze 1373:
1.78 schwarze 1374: /* Prepare for the next replacement. */
1.8 schwarze 1375:
1.78 schwarze 1376: start = nbuf + pos;
1.110 schwarze 1377: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1378: free(buf->buf);
1379: buf->buf = nbuf;
1.42 schwarze 1380: }
1.149 schwarze 1381: return ROFF_CONT;
1.42 schwarze 1382: }
1383:
1384: /*
1.147 schwarze 1385: * Process text streams.
1.42 schwarze 1386: */
1387: static enum rofferr
1.110 schwarze 1388: roff_parsetext(struct buf *buf, int pos, int *offs)
1.42 schwarze 1389: {
1390: size_t sz;
1391: const char *start;
1.51 schwarze 1392: char *p;
1393: int isz;
1.42 schwarze 1394: enum mandoc_esc esc;
1395:
1.147 schwarze 1396: /* Spring the input line trap. */
1397:
1398: if (roffit_lines == 1) {
1399: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1400: free(buf->buf);
1401: buf->buf = p;
1402: buf->sz = isz + 1;
1403: *offs = 0;
1404: free(roffit_macro);
1405: roffit_lines = 0;
1.149 schwarze 1406: return ROFF_REPARSE;
1.147 schwarze 1407: } else if (roffit_lines > 1)
1408: --roffit_lines;
1409:
1410: /* Convert all breakable hyphens into ASCII_HYPH. */
1411:
1.110 schwarze 1412: start = p = buf->buf + pos;
1.42 schwarze 1413:
1.110 schwarze 1414: while (*p != '\0') {
1.42 schwarze 1415: sz = strcspn(p, "-\\");
1416: p += sz;
1417:
1.110 schwarze 1418: if (*p == '\0')
1.42 schwarze 1419: break;
1420:
1.110 schwarze 1421: if (*p == '\\') {
1.42 schwarze 1422: /* Skip over escapes. */
1423: p++;
1.62 schwarze 1424: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1425: if (esc == ESCAPE_ERROR)
1.42 schwarze 1426: break;
1.136 schwarze 1427: while (*p == '-')
1428: p++;
1.42 schwarze 1429: continue;
1430: } else if (p == start) {
1431: p++;
1432: continue;
1433: }
1434:
1.44 schwarze 1435: if (isalpha((unsigned char)p[-1]) &&
1436: isalpha((unsigned char)p[1]))
1.42 schwarze 1437: *p = ASCII_HYPH;
1438: p++;
1.8 schwarze 1439: }
1.149 schwarze 1440: return ROFF_CONT;
1.8 schwarze 1441: }
1442:
1.1 schwarze 1443: enum rofferr
1.110 schwarze 1444: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1445: {
1.166 schwarze 1446: enum roff_tok t;
1.27 schwarze 1447: enum rofferr e;
1.110 schwarze 1448: int pos; /* parse point */
1.115 schwarze 1449: int spos; /* saved parse point for messages */
1.110 schwarze 1450: int ppos; /* original offset in buf->buf */
1451: int ctl; /* macro line (boolean) */
1452:
1453: ppos = pos = *offs;
1.1 schwarze 1454:
1.102 schwarze 1455: /* Handle in-line equation delimiters. */
1456:
1.108 schwarze 1457: if (r->tbl == NULL &&
1458: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1459: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1460: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1461: if (e == ROFF_REPARSE)
1.149 schwarze 1462: return e;
1.102 schwarze 1463: assert(e == ROFF_CONT);
1464: }
1465:
1466: /* Expand some escape sequences. */
1.8 schwarze 1467:
1.110 schwarze 1468: e = roff_res(r, buf, ln, pos);
1.175 schwarze 1469: if (e == ROFF_IGN || e == ROFF_APPEND)
1.149 schwarze 1470: return e;
1.110 schwarze 1471: assert(e == ROFF_CONT);
1.8 schwarze 1472:
1.110 schwarze 1473: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1474:
1.8 schwarze 1475: /*
1.2 schwarze 1476: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1477: * text through the macro's filter.
1478: * Equations process all content themselves.
1479: * Tables process almost all content themselves, but we want
1480: * to warn about macros before passing it there.
1.2 schwarze 1481: */
1482:
1.124 schwarze 1483: if (r->last != NULL && ! ctl) {
1.2 schwarze 1484: t = r->last->tok;
1.110 schwarze 1485: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.166 schwarze 1486: if (e == ROFF_IGN)
1.149 schwarze 1487: return e;
1.166 schwarze 1488: assert(e == ROFF_CONT);
1.54 schwarze 1489: }
1.124 schwarze 1490: if (r->eqn != NULL)
1.149 schwarze 1491: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.124 schwarze 1492: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.149 schwarze 1493: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.124 schwarze 1494: if ( ! ctl)
1.149 schwarze 1495: return roff_parsetext(buf, pos, offs);
1.100 schwarze 1496:
1497: /* Skip empty request lines. */
1498:
1.110 schwarze 1499: if (buf->buf[pos] == '"') {
1.100 schwarze 1500: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1501: ln, pos, NULL);
1.149 schwarze 1502: return ROFF_IGN;
1.110 schwarze 1503: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1504: return ROFF_IGN;
1.2 schwarze 1505:
1506: /*
1507: * If a scope is open, go to the child handler for that macro,
1508: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1509: * Don't do so if an equation is open.
1.2 schwarze 1510: */
1511:
1512: if (r->last) {
1.1 schwarze 1513: t = r->last->tok;
1.149 schwarze 1514: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1515: }
1516:
1.115 schwarze 1517: /* No scope is open. This is a new request or macro. */
1518:
1519: spos = pos;
1520: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1521:
1522: /* Tables ignore most macros. */
1523:
1.166 schwarze 1524: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS)) {
1.115 schwarze 1525: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1526: ln, pos, buf->buf + spos);
1.129 schwarze 1527: if (t == ROFF_TS)
1.149 schwarze 1528: return ROFF_IGN;
1.129 schwarze 1529: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1530: pos++;
1.163 schwarze 1531: while (buf->buf[pos] == ' ')
1.129 schwarze 1532: pos++;
1.149 schwarze 1533: return tbl_read(r->tbl, ln, buf->buf, pos);
1.115 schwarze 1534: }
1535:
1.2 schwarze 1536: /*
1.115 schwarze 1537: * This is neither a roff request nor a user-defined macro.
1538: * Let the standard macro set parsers handle it.
1.2 schwarze 1539: */
1540:
1.166 schwarze 1541: if (t == TOKEN_NONE)
1.149 schwarze 1542: return ROFF_CONT;
1.115 schwarze 1543:
1544: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1545:
1.168 schwarze 1546: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1547: }
1548:
1.27 schwarze 1549: void
1.2 schwarze 1550: roff_endparse(struct roff *r)
1551: {
1.1 schwarze 1552:
1.27 schwarze 1553: if (r->last)
1.94 schwarze 1554: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1555: r->last->line, r->last->col,
1.167 schwarze 1556: roff_name[r->last->tok]);
1.27 schwarze 1557:
1.32 schwarze 1558: if (r->eqn) {
1.94 schwarze 1559: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1560: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1561: eqn_end(&r->eqn);
1.32 schwarze 1562: }
1563:
1.27 schwarze 1564: if (r->tbl) {
1.94 schwarze 1565: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1566: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1567: tbl_end(&r->tbl);
1.27 schwarze 1568: }
1.1 schwarze 1569: }
1570:
1571: /*
1572: * Parse a roff node's type from the input buffer. This must be in the
1573: * form of ".foo xxx" in the usual way.
1574: */
1.166 schwarze 1575: static enum roff_tok
1.87 schwarze 1576: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1577: {
1.87 schwarze 1578: char *cp;
1.16 schwarze 1579: const char *mac;
1580: size_t maclen;
1.166 schwarze 1581: enum roff_tok t;
1.1 schwarze 1582:
1.87 schwarze 1583: cp = buf + *pos;
1584:
1585: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1586: return TOKEN_NONE;
1.1 schwarze 1587:
1.87 schwarze 1588: mac = cp;
1589: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1590:
1.16 schwarze 1591: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.167 schwarze 1592: ? ROFF_USERDEF : roffhash_find(r->reqtab, mac, maclen);
1.1 schwarze 1593:
1.166 schwarze 1594: if (t != TOKEN_NONE)
1.87 schwarze 1595: *pos = cp - buf;
1.1 schwarze 1596:
1.149 schwarze 1597: return t;
1.1 schwarze 1598: }
1599:
1.138 schwarze 1600: /* --- handling of request blocks ----------------------------------------- */
1601:
1.1 schwarze 1602: static enum rofferr
1.2 schwarze 1603: roff_cblock(ROFF_ARGS)
1.1 schwarze 1604: {
1605:
1.2 schwarze 1606: /*
1607: * A block-close `..' should only be invoked as a child of an
1608: * ignore macro, otherwise raise a warning and just ignore it.
1609: */
1610:
1.110 schwarze 1611: if (r->last == NULL) {
1.94 schwarze 1612: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1613: ln, ppos, "..");
1.149 schwarze 1614: return ROFF_IGN;
1.2 schwarze 1615: }
1.1 schwarze 1616:
1.2 schwarze 1617: switch (r->last->tok) {
1.80 schwarze 1618: case ROFF_am:
1.93 schwarze 1619: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1620: case ROFF_ami:
1621: case ROFF_de:
1.23 schwarze 1622: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1623: case ROFF_dei:
1624: case ROFF_ig:
1.2 schwarze 1625: break;
1626: default:
1.94 schwarze 1627: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1628: ln, ppos, "..");
1.149 schwarze 1629: return ROFF_IGN;
1.2 schwarze 1630: }
1631:
1.110 schwarze 1632: if (buf->buf[pos] != '\0')
1.90 schwarze 1633: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1634: ".. %s", buf->buf + pos);
1.2 schwarze 1635:
1636: roffnode_pop(r);
1637: roffnode_cleanscope(r);
1.149 schwarze 1638: return ROFF_IGN;
1.2 schwarze 1639:
1640: }
1.1 schwarze 1641:
1.2 schwarze 1642: static void
1643: roffnode_cleanscope(struct roff *r)
1644: {
1.1 schwarze 1645:
1.2 schwarze 1646: while (r->last) {
1.46 schwarze 1647: if (--r->last->endspan != 0)
1.2 schwarze 1648: break;
1649: roffnode_pop(r);
1650: }
1651: }
1.1 schwarze 1652:
1.68 schwarze 1653: static void
1654: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1655: {
1.1 schwarze 1656:
1.2 schwarze 1657: if (NULL == r->last) {
1.94 schwarze 1658: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1659: ln, ppos, "\\}");
1.68 schwarze 1660: return;
1.2 schwarze 1661: }
1.1 schwarze 1662:
1.2 schwarze 1663: switch (r->last->tok) {
1.80 schwarze 1664: case ROFF_el:
1665: case ROFF_ie:
1666: case ROFF_if:
1.2 schwarze 1667: break;
1668: default:
1.94 schwarze 1669: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1670: ln, ppos, "\\}");
1.68 schwarze 1671: return;
1.2 schwarze 1672: }
1.1 schwarze 1673:
1.2 schwarze 1674: if (r->last->endspan > -1) {
1.94 schwarze 1675: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1676: ln, ppos, "\\}");
1.68 schwarze 1677: return;
1.2 schwarze 1678: }
1679:
1680: roffnode_pop(r);
1681: roffnode_cleanscope(r);
1.68 schwarze 1682: return;
1.1 schwarze 1683: }
1684:
1685: static enum rofferr
1.2 schwarze 1686: roff_block(ROFF_ARGS)
1.1 schwarze 1687: {
1.93 schwarze 1688: const char *name;
1689: char *iname, *cp;
1.86 schwarze 1690: size_t namesz;
1.16 schwarze 1691:
1.93 schwarze 1692: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1693:
1.110 schwarze 1694: if (tok == ROFF_de1)
1.93 schwarze 1695: tok = ROFF_de;
1.123 schwarze 1696: else if (tok == ROFF_dei1)
1697: tok = ROFF_dei;
1.110 schwarze 1698: else if (tok == ROFF_am1)
1.93 schwarze 1699: tok = ROFF_am;
1.123 schwarze 1700: else if (tok == ROFF_ami1)
1701: tok = ROFF_ami;
1.93 schwarze 1702:
1703: /* Parse the macro name argument. */
1704:
1.110 schwarze 1705: cp = buf->buf + pos;
1706: if (tok == ROFF_ig) {
1.93 schwarze 1707: iname = NULL;
1708: namesz = 0;
1709: } else {
1710: iname = cp;
1711: namesz = roff_getname(r, &cp, ln, ppos);
1712: iname[namesz] = '\0';
1713: }
1.22 schwarze 1714:
1.93 schwarze 1715: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1716:
1.110 schwarze 1717: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1718: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1719: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1720: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1721: "%.*s", (int)namesz, iname);
1722: namesz = 0;
1723: } else
1724: namesz = strlen(name);
1725: } else
1726: name = iname;
1.22 schwarze 1727:
1.110 schwarze 1728: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1729: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1730: ln, ppos, roff_name[tok]);
1.149 schwarze 1731: return ROFF_IGN;
1.93 schwarze 1732: }
1.2 schwarze 1733:
1.16 schwarze 1734: roffnode_push(r, tok, name, ln, ppos);
1735:
1736: /*
1737: * At the beginning of a `de' macro, clear the existing string
1738: * with the same name, if there is one. New content will be
1.66 schwarze 1739: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1740: */
1.22 schwarze 1741:
1.110 schwarze 1742: if (tok == ROFF_de || tok == ROFF_dei)
1.86 schwarze 1743: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.2 schwarze 1744:
1.110 schwarze 1745: if (*cp == '\0')
1.149 schwarze 1746: return ROFF_IGN;
1.1 schwarze 1747:
1.93 schwarze 1748: /* Get the custom end marker. */
1.22 schwarze 1749:
1.93 schwarze 1750: iname = cp;
1.86 schwarze 1751: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1752:
1753: /* Resolve the end marker if it is indirect. */
1754:
1.110 schwarze 1755: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1756: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1757: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1758: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1759: "%.*s", (int)namesz, iname);
1760: namesz = 0;
1761: } else
1762: namesz = strlen(name);
1763: } else
1764: name = iname;
1765:
1.86 schwarze 1766: if (namesz)
1767: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1768:
1.110 schwarze 1769: if (*cp != '\0')
1.90 schwarze 1770: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 1771: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 1772:
1.149 schwarze 1773: return ROFF_IGN;
1.1 schwarze 1774: }
1775:
1776: static enum rofferr
1.2 schwarze 1777: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1778: {
1.166 schwarze 1779: enum roff_tok t;
1.2 schwarze 1780: int i, j;
1781:
1782: /*
1783: * First check whether a custom macro exists at this level. If
1784: * it does, then check against it. This is some of groff's
1785: * stranger behaviours. If we encountered a custom end-scope
1786: * tag and that tag also happens to be a "real" macro, then we
1787: * need to try interpreting it again as a real macro. If it's
1788: * not, then return ignore. Else continue.
1789: */
1790:
1791: if (r->last->end) {
1.35 schwarze 1792: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1793: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1794: break;
1.1 schwarze 1795:
1.110 schwarze 1796: if (r->last->end[j] == '\0' &&
1797: (buf->buf[i] == '\0' ||
1798: buf->buf[i] == ' ' ||
1799: buf->buf[i] == '\t')) {
1.2 schwarze 1800: roffnode_pop(r);
1801: roffnode_cleanscope(r);
1.1 schwarze 1802:
1.110 schwarze 1803: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1804: i++;
1805:
1806: pos = i;
1.110 schwarze 1807: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 1808: TOKEN_NONE)
1.149 schwarze 1809: return ROFF_RERUN;
1810: return ROFF_IGN;
1.2 schwarze 1811: }
1.1 schwarze 1812: }
1813:
1.2 schwarze 1814: /*
1815: * If we have no custom end-query or lookup failed, then try
1816: * pulling it out of the hashtable.
1817: */
1.1 schwarze 1818:
1.110 schwarze 1819: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1820:
1.110 schwarze 1821: if (t != ROFF_cblock) {
1822: if (tok != ROFF_ig)
1823: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1824: return ROFF_IGN;
1.16 schwarze 1825: }
1.1 schwarze 1826:
1.149 schwarze 1827: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1828: }
1829:
1830: static enum rofferr
1831: roff_block_text(ROFF_ARGS)
1832: {
1833:
1.110 schwarze 1834: if (tok != ROFF_ig)
1835: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1836:
1.149 schwarze 1837: return ROFF_IGN;
1.2 schwarze 1838: }
1839:
1840: static enum rofferr
1841: roff_cond_sub(ROFF_ARGS)
1842: {
1.166 schwarze 1843: enum roff_tok t;
1.37 schwarze 1844: char *ep;
1.71 schwarze 1845: int rr;
1.2 schwarze 1846:
1847: rr = r->last->rule;
1.37 schwarze 1848: roffnode_cleanscope(r);
1.110 schwarze 1849: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1850:
1.37 schwarze 1851: /*
1.50 schwarze 1852: * Fully handle known macros when they are structurally
1853: * required or when the conditional evaluated to true.
1.5 schwarze 1854: */
1855:
1.166 schwarze 1856: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.149 schwarze 1857: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.39 schwarze 1858:
1.69 schwarze 1859: /*
1860: * If `\}' occurs on a macro line without a preceding macro,
1861: * drop the line completely.
1862: */
1863:
1.110 schwarze 1864: ep = buf->buf + pos;
1865: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1866: rr = 0;
1.69 schwarze 1867:
1.50 schwarze 1868: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1869:
1.110 schwarze 1870: while ((ep = strchr(ep, '\\')) != NULL) {
1871: if (*(++ep) == '}') {
1.70 schwarze 1872: *ep = '&';
1.110 schwarze 1873: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1874: }
1.119 schwarze 1875: if (*ep != '\0')
1876: ++ep;
1.50 schwarze 1877: }
1.149 schwarze 1878: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1879: }
1880:
1881: static enum rofferr
1882: roff_cond_text(ROFF_ARGS)
1883: {
1.37 schwarze 1884: char *ep;
1.71 schwarze 1885: int rr;
1.2 schwarze 1886:
1887: rr = r->last->rule;
1.37 schwarze 1888: roffnode_cleanscope(r);
1.1 schwarze 1889:
1.110 schwarze 1890: ep = buf->buf + pos;
1891: while ((ep = strchr(ep, '\\')) != NULL) {
1892: if (*(++ep) == '}') {
1.70 schwarze 1893: *ep = '&';
1.110 schwarze 1894: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1895: }
1.119 schwarze 1896: if (*ep != '\0')
1897: ++ep;
1.2 schwarze 1898: }
1.149 schwarze 1899: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1900: }
1901:
1.138 schwarze 1902: /* --- handling of numeric and conditional expressions -------------------- */
1903:
1.77 schwarze 1904: /*
1905: * Parse a single signed integer number. Stop at the first non-digit.
1906: * If there is at least one digit, return success and advance the
1907: * parse point, else return failure and let the parse point unchanged.
1908: * Ignore overflows, treat them just like the C language.
1909: */
1.56 schwarze 1910: static int
1.133 schwarze 1911: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 1912: {
1.133 schwarze 1913: int myres, scaled, n, p;
1.79 schwarze 1914:
1915: if (NULL == res)
1916: res = &myres;
1.56 schwarze 1917:
1918: p = *pos;
1919: n = v[p] == '-';
1.133 schwarze 1920: if (n || v[p] == '+')
1.56 schwarze 1921: p++;
1922:
1.133 schwarze 1923: if (flags & ROFFNUM_WHITE)
1924: while (isspace((unsigned char)v[p]))
1925: p++;
1926:
1.56 schwarze 1927: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 1928: *res = 10 * *res + v[p] - '0';
1.56 schwarze 1929: if (p == *pos + n)
1930: return 0;
1931:
1932: if (n)
1933: *res = -*res;
1934:
1.126 schwarze 1935: /* Each number may be followed by one optional scaling unit. */
1936:
1937: switch (v[p]) {
1938: case 'f':
1.133 schwarze 1939: scaled = *res * 65536;
1.126 schwarze 1940: break;
1941: case 'i':
1.133 schwarze 1942: scaled = *res * 240;
1.126 schwarze 1943: break;
1944: case 'c':
1.133 schwarze 1945: scaled = *res * 240 / 2.54;
1.126 schwarze 1946: break;
1947: case 'v':
1948: case 'P':
1.133 schwarze 1949: scaled = *res * 40;
1.126 schwarze 1950: break;
1951: case 'm':
1952: case 'n':
1.133 schwarze 1953: scaled = *res * 24;
1.126 schwarze 1954: break;
1955: case 'p':
1.133 schwarze 1956: scaled = *res * 10 / 3;
1.126 schwarze 1957: break;
1958: case 'u':
1.133 schwarze 1959: scaled = *res;
1.126 schwarze 1960: break;
1961: case 'M':
1.133 schwarze 1962: scaled = *res * 6 / 25;
1.126 schwarze 1963: break;
1964: default:
1.133 schwarze 1965: scaled = *res;
1.126 schwarze 1966: p--;
1967: break;
1968: }
1.133 schwarze 1969: if (flags & ROFFNUM_SCALE)
1970: *res = scaled;
1.126 schwarze 1971:
1972: *pos = p + 1;
1.149 schwarze 1973: return 1;
1.56 schwarze 1974: }
1975:
1.71 schwarze 1976: /*
1977: * Evaluate a string comparison condition.
1978: * The first character is the delimiter.
1979: * Succeed if the string up to its second occurrence
1980: * matches the string up to its third occurence.
1981: * Advance the cursor after the third occurrence
1982: * or lacking that, to the end of the line.
1983: */
1984: static int
1985: roff_evalstrcond(const char *v, int *pos)
1986: {
1987: const char *s1, *s2, *s3;
1988: int match;
1989:
1990: match = 0;
1991: s1 = v + *pos; /* initial delimiter */
1992: s2 = s1 + 1; /* for scanning the first string */
1993: s3 = strchr(s2, *s1); /* for scanning the second string */
1994:
1995: if (NULL == s3) /* found no middle delimiter */
1996: goto out;
1997:
1998: while ('\0' != *++s3) {
1999: if (*s2 != *s3) { /* mismatch */
2000: s3 = strchr(s3, *s1);
2001: break;
2002: }
2003: if (*s3 == *s1) { /* found the final delimiter */
2004: match = 1;
2005: break;
2006: }
2007: s2++;
2008: }
2009:
2010: out:
2011: if (NULL == s3)
2012: s3 = strchr(s2, '\0');
1.114 schwarze 2013: else if (*s3 != '\0')
1.71 schwarze 2014: s3++;
2015: *pos = s3 - v;
1.149 schwarze 2016: return match;
1.71 schwarze 2017: }
2018:
1.77 schwarze 2019: /*
2020: * Evaluate an optionally negated single character, numerical,
2021: * or string condition.
2022: */
1.71 schwarze 2023: static int
1.143 schwarze 2024: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2025: {
1.143 schwarze 2026: char *cp, *name;
2027: size_t sz;
1.113 schwarze 2028: int number, savepos, wanttrue;
1.5 schwarze 2029:
1.71 schwarze 2030: if ('!' == v[*pos]) {
2031: wanttrue = 0;
2032: (*pos)++;
2033: } else
2034: wanttrue = 1;
2035:
1.5 schwarze 2036: switch (v[*pos]) {
1.112 schwarze 2037: case '\0':
1.149 schwarze 2038: return 0;
1.80 schwarze 2039: case 'n':
2040: case 'o':
1.5 schwarze 2041: (*pos)++;
1.149 schwarze 2042: return wanttrue;
1.80 schwarze 2043: case 'c':
2044: case 'd':
2045: case 'e':
2046: case 't':
1.111 schwarze 2047: case 'v':
1.5 schwarze 2048: (*pos)++;
1.149 schwarze 2049: return !wanttrue;
1.143 schwarze 2050: case 'r':
2051: cp = name = v + ++*pos;
2052: sz = roff_getname(r, &cp, ln, *pos);
2053: *pos = cp - v;
1.149 schwarze 2054: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.5 schwarze 2055: default:
2056: break;
2057: }
2058:
1.113 schwarze 2059: savepos = *pos;
1.133 schwarze 2060: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2061: return (number > 0) == wanttrue;
1.113 schwarze 2062: else if (*pos == savepos)
1.149 schwarze 2063: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2064: else
1.149 schwarze 2065: return 0;
1.5 schwarze 2066: }
2067:
1.2 schwarze 2068: static enum rofferr
1.21 schwarze 2069: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2070: {
1.30 schwarze 2071:
1.149 schwarze 2072: return ROFF_IGN;
1.21 schwarze 2073: }
2074:
2075: static enum rofferr
1.123 schwarze 2076: roff_insec(ROFF_ARGS)
2077: {
2078:
2079: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2080: ln, ppos, roff_name[tok]);
1.149 schwarze 2081: return ROFF_IGN;
1.123 schwarze 2082: }
2083:
2084: static enum rofferr
2085: roff_unsupp(ROFF_ARGS)
2086: {
2087:
2088: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2089: ln, ppos, roff_name[tok]);
1.149 schwarze 2090: return ROFF_IGN;
1.123 schwarze 2091: }
2092:
2093: static enum rofferr
1.2 schwarze 2094: roff_cond(ROFF_ARGS)
2095: {
1.46 schwarze 2096:
2097: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2098:
1.80 schwarze 2099: /*
1.35 schwarze 2100: * An `.el' has no conditional body: it will consume the value
2101: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2102: * defaults to DENY.
1.35 schwarze 2103: *
2104: * If we're not an `el', however, then evaluate the conditional.
2105: */
1.1 schwarze 2106:
1.110 schwarze 2107: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2108: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2109: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2110:
1.35 schwarze 2111: /*
2112: * An if-else will put the NEGATION of the current evaluated
2113: * conditional into the stack of rules.
2114: */
2115:
1.110 schwarze 2116: if (tok == ROFF_ie) {
1.96 schwarze 2117: if (r->rstackpos + 1 == r->rstacksz) {
2118: r->rstacksz += 16;
2119: r->rstack = mandoc_reallocarray(r->rstack,
2120: r->rstacksz, sizeof(int));
1.35 schwarze 2121: }
1.71 schwarze 2122: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2123: }
1.5 schwarze 2124:
2125: /* If the parent has false as its rule, then so do we. */
2126:
1.71 schwarze 2127: if (r->last->parent && !r->last->parent->rule)
2128: r->last->rule = 0;
1.5 schwarze 2129:
2130: /*
1.46 schwarze 2131: * Determine scope.
2132: * If there is nothing on the line after the conditional,
2133: * not even whitespace, use next-line scope.
1.5 schwarze 2134: */
1.2 schwarze 2135:
1.110 schwarze 2136: if (buf->buf[pos] == '\0') {
1.46 schwarze 2137: r->last->endspan = 2;
2138: goto out;
2139: }
2140:
1.110 schwarze 2141: while (buf->buf[pos] == ' ')
1.46 schwarze 2142: pos++;
2143:
2144: /* An opening brace requests multiline scope. */
1.2 schwarze 2145:
1.110 schwarze 2146: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2147: r->last->endspan = -1;
2148: pos += 2;
1.144 schwarze 2149: while (buf->buf[pos] == ' ')
2150: pos++;
1.46 schwarze 2151: goto out;
1.80 schwarze 2152: }
1.2 schwarze 2153:
2154: /*
1.46 schwarze 2155: * Anything else following the conditional causes
2156: * single-line scope. Warn if the scope contains
2157: * nothing but trailing whitespace.
1.2 schwarze 2158: */
2159:
1.110 schwarze 2160: if (buf->buf[pos] == '\0')
1.89 schwarze 2161: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2162: ln, ppos, roff_name[tok]);
1.2 schwarze 2163:
1.46 schwarze 2164: r->last->endspan = 1;
1.1 schwarze 2165:
1.46 schwarze 2166: out:
1.2 schwarze 2167: *offs = pos;
1.149 schwarze 2168: return ROFF_RERUN;
1.1 schwarze 2169: }
2170:
1.2 schwarze 2171: static enum rofferr
1.7 schwarze 2172: roff_ds(ROFF_ARGS)
2173: {
1.85 schwarze 2174: char *string;
2175: const char *name;
2176: size_t namesz;
1.10 schwarze 2177:
1.123 schwarze 2178: /* Ignore groff compatibility mode for now. */
2179:
2180: if (tok == ROFF_ds1)
2181: tok = ROFF_ds;
2182: else if (tok == ROFF_as1)
2183: tok = ROFF_as;
2184:
1.10 schwarze 2185: /*
1.85 schwarze 2186: * The first word is the name of the string.
2187: * If it is empty or terminated by an escape sequence,
2188: * abort the `ds' request without defining anything.
1.10 schwarze 2189: */
1.7 schwarze 2190:
1.110 schwarze 2191: name = string = buf->buf + pos;
2192: if (*name == '\0')
1.149 schwarze 2193: return ROFF_IGN;
1.7 schwarze 2194:
1.85 schwarze 2195: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2196: if (name[namesz] == '\\')
1.149 schwarze 2197: return ROFF_IGN;
1.85 schwarze 2198:
2199: /* Read past the initial double-quote, if any. */
1.110 schwarze 2200: if (*string == '"')
1.7 schwarze 2201: string++;
2202:
1.10 schwarze 2203: /* The rest is the value. */
1.85 schwarze 2204: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2205: ROFF_as == tok);
1.149 schwarze 2206: return ROFF_IGN;
1.7 schwarze 2207: }
2208:
1.77 schwarze 2209: /*
2210: * Parse a single operator, one or two characters long.
2211: * If the operator is recognized, return success and advance the
2212: * parse point, else return failure and let the parse point unchanged.
2213: */
2214: static int
2215: roff_getop(const char *v, int *pos, char *res)
2216: {
2217:
2218: *res = v[*pos];
2219:
2220: switch (*res) {
1.80 schwarze 2221: case '+':
2222: case '-':
2223: case '*':
2224: case '/':
2225: case '%':
2226: case '&':
2227: case ':':
1.77 schwarze 2228: break;
2229: case '<':
2230: switch (v[*pos + 1]) {
1.80 schwarze 2231: case '=':
1.77 schwarze 2232: *res = 'l';
2233: (*pos)++;
2234: break;
1.80 schwarze 2235: case '>':
1.77 schwarze 2236: *res = '!';
2237: (*pos)++;
2238: break;
1.80 schwarze 2239: case '?':
1.77 schwarze 2240: *res = 'i';
2241: (*pos)++;
2242: break;
2243: default:
2244: break;
2245: }
2246: break;
2247: case '>':
2248: switch (v[*pos + 1]) {
1.80 schwarze 2249: case '=':
1.77 schwarze 2250: *res = 'g';
2251: (*pos)++;
2252: break;
1.80 schwarze 2253: case '?':
1.77 schwarze 2254: *res = 'a';
2255: (*pos)++;
2256: break;
2257: default:
2258: break;
2259: }
2260: break;
2261: case '=':
2262: if ('=' == v[*pos + 1])
2263: (*pos)++;
2264: break;
2265: default:
1.149 schwarze 2266: return 0;
1.77 schwarze 2267: }
2268: (*pos)++;
2269:
1.149 schwarze 2270: return *res;
1.77 schwarze 2271: }
2272:
2273: /*
2274: * Evaluate either a parenthesized numeric expression
2275: * or a single signed integer number.
2276: */
2277: static int
1.106 schwarze 2278: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2279: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2280: {
2281:
2282: if ('(' != v[*pos])
1.149 schwarze 2283: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2284:
2285: (*pos)++;
1.133 schwarze 2286: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2287: return 0;
1.77 schwarze 2288:
1.79 schwarze 2289: /*
2290: * Omission of the closing parenthesis
2291: * is an error in validation mode,
2292: * but ignored in evaluation mode.
2293: */
2294:
1.77 schwarze 2295: if (')' == v[*pos])
2296: (*pos)++;
1.79 schwarze 2297: else if (NULL == res)
1.149 schwarze 2298: return 0;
1.77 schwarze 2299:
1.149 schwarze 2300: return 1;
1.77 schwarze 2301: }
2302:
2303: /*
2304: * Evaluate a complete numeric expression.
2305: * Proceed left to right, there is no concept of precedence.
2306: */
2307: static int
1.106 schwarze 2308: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2309: int *pos, int *res, int flags)
1.77 schwarze 2310: {
2311: int mypos, operand2;
2312: char operator;
2313:
2314: if (NULL == pos) {
2315: mypos = 0;
2316: pos = &mypos;
2317: }
2318:
1.133 schwarze 2319: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2320: while (isspace((unsigned char)v[*pos]))
2321: (*pos)++;
2322:
1.133 schwarze 2323: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2324: return 0;
1.77 schwarze 2325:
2326: while (1) {
1.133 schwarze 2327: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2328: while (isspace((unsigned char)v[*pos]))
2329: (*pos)++;
2330:
2331: if ( ! roff_getop(v, pos, &operator))
2332: break;
2333:
1.133 schwarze 2334: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2335: while (isspace((unsigned char)v[*pos]))
2336: (*pos)++;
2337:
1.133 schwarze 2338: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2339: return 0;
1.77 schwarze 2340:
1.133 schwarze 2341: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2342: while (isspace((unsigned char)v[*pos]))
2343: (*pos)++;
1.79 schwarze 2344:
2345: if (NULL == res)
2346: continue;
1.77 schwarze 2347:
2348: switch (operator) {
1.80 schwarze 2349: case '+':
1.77 schwarze 2350: *res += operand2;
2351: break;
1.80 schwarze 2352: case '-':
1.77 schwarze 2353: *res -= operand2;
2354: break;
1.80 schwarze 2355: case '*':
1.77 schwarze 2356: *res *= operand2;
2357: break;
1.80 schwarze 2358: case '/':
1.116 schwarze 2359: if (operand2 == 0) {
1.106 schwarze 2360: mandoc_msg(MANDOCERR_DIVZERO,
2361: r->parse, ln, *pos, v);
2362: *res = 0;
2363: break;
2364: }
1.77 schwarze 2365: *res /= operand2;
2366: break;
1.80 schwarze 2367: case '%':
1.116 schwarze 2368: if (operand2 == 0) {
2369: mandoc_msg(MANDOCERR_DIVZERO,
2370: r->parse, ln, *pos, v);
2371: *res = 0;
2372: break;
2373: }
1.77 schwarze 2374: *res %= operand2;
2375: break;
1.80 schwarze 2376: case '<':
1.77 schwarze 2377: *res = *res < operand2;
2378: break;
1.80 schwarze 2379: case '>':
1.77 schwarze 2380: *res = *res > operand2;
2381: break;
1.80 schwarze 2382: case 'l':
1.77 schwarze 2383: *res = *res <= operand2;
2384: break;
1.80 schwarze 2385: case 'g':
1.77 schwarze 2386: *res = *res >= operand2;
2387: break;
1.80 schwarze 2388: case '=':
1.77 schwarze 2389: *res = *res == operand2;
2390: break;
1.80 schwarze 2391: case '!':
1.77 schwarze 2392: *res = *res != operand2;
2393: break;
1.80 schwarze 2394: case '&':
1.77 schwarze 2395: *res = *res && operand2;
2396: break;
1.80 schwarze 2397: case ':':
1.77 schwarze 2398: *res = *res || operand2;
2399: break;
1.80 schwarze 2400: case 'i':
1.77 schwarze 2401: if (operand2 < *res)
2402: *res = operand2;
2403: break;
1.80 schwarze 2404: case 'a':
1.77 schwarze 2405: if (operand2 > *res)
2406: *res = operand2;
2407: break;
2408: default:
2409: abort();
2410: }
2411: }
1.149 schwarze 2412: return 1;
1.77 schwarze 2413: }
2414:
1.138 schwarze 2415: /* --- register management ------------------------------------------------ */
2416:
1.52 schwarze 2417: void
1.60 schwarze 2418: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2419: {
1.52 schwarze 2420: struct roffreg *reg;
2421:
2422: /* Search for an existing register with the same name. */
2423: reg = r->regtab;
2424:
2425: while (reg && strcmp(name, reg->key.p))
2426: reg = reg->next;
1.41 schwarze 2427:
1.52 schwarze 2428: if (NULL == reg) {
2429: /* Create a new register. */
2430: reg = mandoc_malloc(sizeof(struct roffreg));
2431: reg->key.p = mandoc_strdup(name);
2432: reg->key.sz = strlen(name);
1.60 schwarze 2433: reg->val = 0;
1.52 schwarze 2434: reg->next = r->regtab;
2435: r->regtab = reg;
2436: }
2437:
1.60 schwarze 2438: if ('+' == sign)
2439: reg->val += val;
2440: else if ('-' == sign)
2441: reg->val -= val;
2442: else
2443: reg->val = val;
1.41 schwarze 2444: }
2445:
1.65 schwarze 2446: /*
2447: * Handle some predefined read-only number registers.
2448: * For now, return -1 if the requested register is not predefined;
2449: * in case a predefined read-only register having the value -1
2450: * were to turn up, another special value would have to be chosen.
2451: */
2452: static int
1.145 schwarze 2453: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2454: {
2455:
2456: switch (*name) {
1.145 schwarze 2457: case '$': /* Number of arguments of the last macro evaluated. */
1.149 schwarze 2458: return r->argc;
1.80 schwarze 2459: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2460: return 0;
1.80 schwarze 2461: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2462: return 1;
1.80 schwarze 2463: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2464: return 24;
1.80 schwarze 2465: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2466: return 0;
1.80 schwarze 2467: case 'T': /* Some output device is always defined. */
1.149 schwarze 2468: return 1;
1.80 schwarze 2469: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2470: return 40;
1.65 schwarze 2471: default:
1.149 schwarze 2472: return -1;
1.65 schwarze 2473: }
2474: }
2475:
1.53 schwarze 2476: int
1.52 schwarze 2477: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2478: {
1.52 schwarze 2479: struct roffreg *reg;
1.65 schwarze 2480: int val;
2481:
2482: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.145 schwarze 2483: val = roff_getregro(r, name + 1);
1.65 schwarze 2484: if (-1 != val)
1.149 schwarze 2485: return val;
1.65 schwarze 2486: }
1.52 schwarze 2487:
2488: for (reg = r->regtab; reg; reg = reg->next)
2489: if (0 == strcmp(name, reg->key.p))
1.149 schwarze 2490: return reg->val;
1.53 schwarze 2491:
1.149 schwarze 2492: return 0;
1.53 schwarze 2493: }
2494:
2495: static int
2496: roff_getregn(const struct roff *r, const char *name, size_t len)
2497: {
2498: struct roffreg *reg;
1.65 schwarze 2499: int val;
2500:
2501: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2502: val = roff_getregro(r, name + 1);
1.65 schwarze 2503: if (-1 != val)
1.149 schwarze 2504: return val;
1.65 schwarze 2505: }
1.53 schwarze 2506:
2507: for (reg = r->regtab; reg; reg = reg->next)
2508: if (len == reg->key.sz &&
2509: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2510: return reg->val;
1.143 schwarze 2511:
1.149 schwarze 2512: return 0;
1.143 schwarze 2513: }
2514:
2515: static int
2516: roff_hasregn(const struct roff *r, const char *name, size_t len)
2517: {
2518: struct roffreg *reg;
2519: int val;
2520:
2521: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2522: val = roff_getregro(r, name + 1);
1.143 schwarze 2523: if (-1 != val)
1.149 schwarze 2524: return 1;
1.143 schwarze 2525: }
2526:
2527: for (reg = r->regtab; reg; reg = reg->next)
2528: if (len == reg->key.sz &&
2529: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2530: return 1;
1.41 schwarze 2531:
1.149 schwarze 2532: return 0;
1.41 schwarze 2533: }
2534:
1.52 schwarze 2535: static void
2536: roff_freereg(struct roffreg *reg)
1.41 schwarze 2537: {
1.52 schwarze 2538: struct roffreg *old_reg;
1.41 schwarze 2539:
1.52 schwarze 2540: while (NULL != reg) {
2541: free(reg->key.p);
2542: old_reg = reg;
2543: reg = reg->next;
2544: free(old_reg);
2545: }
1.41 schwarze 2546: }
1.7 schwarze 2547:
2548: static enum rofferr
1.6 schwarze 2549: roff_nr(ROFF_ARGS)
1.1 schwarze 2550: {
1.85 schwarze 2551: char *key, *val;
2552: size_t keysz;
1.37 schwarze 2553: int iv;
1.60 schwarze 2554: char sign;
1.6 schwarze 2555:
1.110 schwarze 2556: key = val = buf->buf + pos;
2557: if (*key == '\0')
1.149 schwarze 2558: return ROFF_IGN;
1.85 schwarze 2559:
2560: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2561: if (key[keysz] == '\\')
1.149 schwarze 2562: return ROFF_IGN;
1.85 schwarze 2563: key[keysz] = '\0';
1.6 schwarze 2564:
1.60 schwarze 2565: sign = *val;
1.110 schwarze 2566: if (sign == '+' || sign == '-')
1.60 schwarze 2567: val++;
2568:
1.133 schwarze 2569: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2570: roff_setreg(r, key, iv, sign);
1.1 schwarze 2571:
1.149 schwarze 2572: return ROFF_IGN;
1.76 schwarze 2573: }
2574:
2575: static enum rofferr
2576: roff_rr(ROFF_ARGS)
2577: {
2578: struct roffreg *reg, **prev;
1.85 schwarze 2579: char *name, *cp;
2580: size_t namesz;
1.76 schwarze 2581:
1.110 schwarze 2582: name = cp = buf->buf + pos;
2583: if (*name == '\0')
1.149 schwarze 2584: return ROFF_IGN;
1.85 schwarze 2585: namesz = roff_getname(r, &cp, ln, pos);
2586: name[namesz] = '\0';
1.76 schwarze 2587:
2588: prev = &r->regtab;
2589: while (1) {
2590: reg = *prev;
1.110 schwarze 2591: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2592: break;
2593: prev = ®->next;
2594: }
1.110 schwarze 2595: if (reg != NULL) {
1.76 schwarze 2596: *prev = reg->next;
2597: free(reg->key.p);
2598: free(reg);
2599: }
1.149 schwarze 2600: return ROFF_IGN;
1.29 schwarze 2601: }
2602:
1.138 schwarze 2603: /* --- handler functions for roff requests -------------------------------- */
2604:
1.29 schwarze 2605: static enum rofferr
2606: roff_rm(ROFF_ARGS)
2607: {
2608: const char *name;
2609: char *cp;
1.85 schwarze 2610: size_t namesz;
1.29 schwarze 2611:
1.110 schwarze 2612: cp = buf->buf + pos;
2613: while (*cp != '\0') {
1.85 schwarze 2614: name = cp;
1.110 schwarze 2615: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2616: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.110 schwarze 2617: if (name[namesz] == '\\')
1.85 schwarze 2618: break;
1.29 schwarze 2619: }
1.149 schwarze 2620: return ROFF_IGN;
1.51 schwarze 2621: }
2622:
2623: static enum rofferr
2624: roff_it(ROFF_ARGS)
2625: {
2626: int iv;
2627:
2628: /* Parse the number of lines. */
1.133 schwarze 2629:
2630: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2631: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2632: ln, ppos, buf->buf + 1);
1.149 schwarze 2633: return ROFF_IGN;
1.51 schwarze 2634: }
2635:
1.134 schwarze 2636: while (isspace((unsigned char)buf->buf[pos]))
2637: pos++;
2638:
2639: /*
2640: * Arm the input line trap.
2641: * Special-casing "an-trap" is an ugly workaround to cope
2642: * with DocBook stupidly fiddling with man(7) internals.
2643: */
1.133 schwarze 2644:
1.51 schwarze 2645: roffit_lines = iv;
1.134 schwarze 2646: roffit_macro = mandoc_strdup(iv != 1 ||
2647: strcmp(buf->buf + pos, "an-trap") ?
2648: buf->buf + pos : "br");
1.149 schwarze 2649: return ROFF_IGN;
1.47 schwarze 2650: }
2651:
2652: static enum rofferr
2653: roff_Dd(ROFF_ARGS)
2654: {
2655: const char *const *cp;
2656:
1.99 schwarze 2657: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.47 schwarze 2658: for (cp = __mdoc_reserved; *cp; cp++)
2659: roff_setstr(r, *cp, NULL, 0);
2660:
1.99 schwarze 2661: if (r->format == 0)
2662: r->format = MPARSE_MDOC;
2663:
1.149 schwarze 2664: return ROFF_CONT;
1.47 schwarze 2665: }
2666:
2667: static enum rofferr
2668: roff_TH(ROFF_ARGS)
2669: {
2670: const char *const *cp;
2671:
1.99 schwarze 2672: if ((r->options & MPARSE_QUICK) == 0)
1.47 schwarze 2673: for (cp = __man_reserved; *cp; cp++)
2674: roff_setstr(r, *cp, NULL, 0);
2675:
1.99 schwarze 2676: if (r->format == 0)
2677: r->format = MPARSE_MAN;
2678:
1.149 schwarze 2679: return ROFF_CONT;
1.14 schwarze 2680: }
2681:
2682: static enum rofferr
1.27 schwarze 2683: roff_TE(ROFF_ARGS)
2684: {
2685:
2686: if (NULL == r->tbl)
1.94 schwarze 2687: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2688: ln, ppos, "TE");
1.130 schwarze 2689: else if ( ! tbl_end(&r->tbl)) {
2690: free(buf->buf);
2691: buf->buf = mandoc_strdup(".sp");
2692: buf->sz = 4;
1.149 schwarze 2693: return ROFF_REPARSE;
1.130 schwarze 2694: }
1.149 schwarze 2695: return ROFF_IGN;
1.27 schwarze 2696: }
2697:
2698: static enum rofferr
2699: roff_T_(ROFF_ARGS)
2700: {
2701:
2702: if (NULL == r->tbl)
1.94 schwarze 2703: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2704: ln, ppos, "T&");
1.27 schwarze 2705: else
1.168 schwarze 2706: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 2707:
1.149 schwarze 2708: return ROFF_IGN;
1.27 schwarze 2709: }
2710:
1.102 schwarze 2711: /*
2712: * Handle in-line equation delimiters.
2713: */
2714: static enum rofferr
1.110 schwarze 2715: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2716: {
1.105 schwarze 2717: char *cp1, *cp2;
2718: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2719:
1.102 schwarze 2720: /*
2721: * Outside equations, look for an opening delimiter.
2722: * If we are inside an equation, we already know it is
2723: * in-line, or this function wouldn't have been called;
2724: * so look for a closing delimiter.
2725: */
2726:
1.110 schwarze 2727: cp1 = buf->buf + pos;
1.102 schwarze 2728: cp2 = strchr(cp1, r->eqn == NULL ?
2729: r->last_eqn->odelim : r->last_eqn->cdelim);
2730: if (cp2 == NULL)
1.149 schwarze 2731: return ROFF_CONT;
1.102 schwarze 2732:
1.105 schwarze 2733: *cp2++ = '\0';
2734: bef_pr = bef_nl = aft_nl = aft_pr = "";
2735:
2736: /* Handle preceding text, protecting whitespace. */
2737:
1.110 schwarze 2738: if (*buf->buf != '\0') {
1.105 schwarze 2739: if (r->eqn == NULL)
2740: bef_pr = "\\&";
2741: bef_nl = "\n";
2742: }
2743:
2744: /*
2745: * Prepare replacing the delimiter with an equation macro
2746: * and drop leading white space from the equation.
2747: */
1.102 schwarze 2748:
1.105 schwarze 2749: if (r->eqn == NULL) {
2750: while (*cp2 == ' ')
2751: cp2++;
2752: mac = ".EQ";
2753: } else
2754: mac = ".EN";
2755:
2756: /* Handle following text, protecting whitespace. */
2757:
2758: if (*cp2 != '\0') {
2759: aft_nl = "\n";
2760: if (r->eqn != NULL)
2761: aft_pr = "\\&";
2762: }
2763:
2764: /* Do the actual replacement. */
2765:
1.110 schwarze 2766: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2767: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2768: free(buf->buf);
2769: buf->buf = cp1;
1.102 schwarze 2770:
2771: /* Toggle the in-line state of the eqn subsystem. */
2772:
2773: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2774: return ROFF_REPARSE;
1.41 schwarze 2775: }
2776:
1.107 schwarze 2777: static enum rofferr
2778: roff_EQ(ROFF_ARGS)
1.32 schwarze 2779: {
1.41 schwarze 2780: struct eqn_node *e;
1.32 schwarze 2781:
1.110 schwarze 2782: assert(r->eqn == NULL);
1.107 schwarze 2783: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2784:
1.102 schwarze 2785: if (r->last_eqn) {
1.32 schwarze 2786: r->last_eqn->next = e;
1.102 schwarze 2787: e->delim = r->last_eqn->delim;
2788: e->odelim = r->last_eqn->odelim;
2789: e->cdelim = r->last_eqn->cdelim;
2790: } else
1.32 schwarze 2791: r->first_eqn = r->last_eqn = e;
2792:
2793: r->eqn = r->last_eqn = e;
1.41 schwarze 2794:
1.110 schwarze 2795: if (buf->buf[pos] != '\0')
1.107 schwarze 2796: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2797: ".EQ %s", buf->buf + pos);
1.41 schwarze 2798:
1.149 schwarze 2799: return ROFF_IGN;
1.32 schwarze 2800: }
2801:
2802: static enum rofferr
2803: roff_EN(ROFF_ARGS)
2804: {
2805:
1.94 schwarze 2806: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.149 schwarze 2807: return ROFF_IGN;
1.32 schwarze 2808: }
2809:
2810: static enum rofferr
1.27 schwarze 2811: roff_TS(ROFF_ARGS)
2812: {
1.49 schwarze 2813: struct tbl_node *tbl;
1.27 schwarze 2814:
2815: if (r->tbl) {
1.94 schwarze 2816: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2817: ln, ppos, "TS breaks TS");
1.41 schwarze 2818: tbl_end(&r->tbl);
1.27 schwarze 2819: }
2820:
1.49 schwarze 2821: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2822:
2823: if (r->last_tbl)
1.49 schwarze 2824: r->last_tbl->next = tbl;
1.27 schwarze 2825: else
1.49 schwarze 2826: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2827:
1.49 schwarze 2828: r->tbl = r->last_tbl = tbl;
1.169 schwarze 2829: return ROFF_IGN;
2830: }
2831:
2832: static enum rofferr
2833: roff_onearg(ROFF_ARGS)
2834: {
2835: struct roff_node *n;
2836: char *cp;
2837:
1.174 schwarze 2838: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
2839: (tok == ROFF_sp || tok == ROFF_ti))
2840: man_breakscope(r->man, tok);
2841:
1.169 schwarze 2842: roff_elem_alloc(r->man, ln, ppos, tok);
2843: n = r->man->last;
2844:
2845: cp = buf->buf + pos;
2846: if (*cp != '\0') {
2847: while (*cp != '\0' && *cp != ' ')
2848: cp++;
2849: while (*cp == ' ')
2850: *cp++ = '\0';
2851: if (*cp != '\0')
2852: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2853: r->parse, ln, cp - buf->buf,
2854: "%s ... %s", roff_name[tok], cp);
2855: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 2856: }
2857:
2858: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2859: r->man->last = n;
2860: r->man->next = ROFF_NEXT_SIBLING;
2861: return ROFF_IGN;
2862: }
2863:
2864: static enum rofferr
2865: roff_manyarg(ROFF_ARGS)
2866: {
2867: struct roff_node *n;
2868: char *sp, *ep;
2869:
2870: roff_elem_alloc(r->man, ln, ppos, tok);
2871: n = r->man->last;
2872:
2873: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
2874: while (*ep != '\0' && *ep != ' ')
2875: ep++;
2876: while (*ep == ' ')
2877: *ep++ = '\0';
2878: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 2879: }
2880:
2881: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2882: r->man->last = n;
2883: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 2884: return ROFF_IGN;
1.123 schwarze 2885: }
2886:
2887: static enum rofferr
1.168 schwarze 2888: roff_br(ROFF_ARGS)
1.123 schwarze 2889: {
1.174 schwarze 2890: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
2891: man_breakscope(r->man, ROFF_br);
1.168 schwarze 2892: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
2893: if (buf->buf[pos] != '\0')
2894: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2895: "%s %s", roff_name[tok], buf->buf + pos);
2896: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2897: r->man->next = ROFF_NEXT_SIBLING;
2898: return ROFF_IGN;
1.27 schwarze 2899: }
2900:
2901: static enum rofferr
1.48 schwarze 2902: roff_cc(ROFF_ARGS)
2903: {
2904: const char *p;
2905:
1.110 schwarze 2906: p = buf->buf + pos;
1.48 schwarze 2907:
1.110 schwarze 2908: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 2909: r->control = '\0';
1.48 schwarze 2910:
1.110 schwarze 2911: if (*p != '\0')
1.132 schwarze 2912: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2913: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 2914:
1.149 schwarze 2915: return ROFF_IGN;
1.48 schwarze 2916: }
2917:
2918: static enum rofferr
1.175 schwarze 2919: roff_ec(ROFF_ARGS)
2920: {
2921: const char *p;
2922:
2923: p = buf->buf + pos;
2924: if (*p == '\0')
2925: r->escape = '\\';
2926: else {
2927: r->escape = *p;
2928: if (*++p != '\0')
2929: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2930: ln, p - buf->buf, "ec ... %s", p);
2931: }
2932: return ROFF_IGN;
2933: }
2934:
2935: static enum rofferr
2936: roff_eo(ROFF_ARGS)
2937: {
2938: r->escape = '\0';
2939: if (buf->buf[pos] != '\0')
2940: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
2941: ln, pos, "eo %s", buf->buf + pos);
2942: return ROFF_IGN;
2943: }
2944:
2945: static enum rofferr
1.42 schwarze 2946: roff_tr(ROFF_ARGS)
2947: {
2948: const char *p, *first, *second;
2949: size_t fsz, ssz;
2950: enum mandoc_esc esc;
2951:
1.110 schwarze 2952: p = buf->buf + pos;
1.42 schwarze 2953:
1.110 schwarze 2954: if (*p == '\0') {
1.132 schwarze 2955: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 2956: return ROFF_IGN;
1.42 schwarze 2957: }
2958:
1.110 schwarze 2959: while (*p != '\0') {
1.42 schwarze 2960: fsz = ssz = 1;
2961:
2962: first = p++;
1.110 schwarze 2963: if (*first == '\\') {
1.42 schwarze 2964: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2965: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2966: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2967: ln, (int)(p - buf->buf), first);
1.149 schwarze 2968: return ROFF_IGN;
1.42 schwarze 2969: }
2970: fsz = (size_t)(p - first);
2971: }
2972:
2973: second = p++;
1.110 schwarze 2974: if (*second == '\\') {
1.42 schwarze 2975: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2976: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2977: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2978: ln, (int)(p - buf->buf), second);
1.149 schwarze 2979: return ROFF_IGN;
1.42 schwarze 2980: }
2981: ssz = (size_t)(p - second);
1.110 schwarze 2982: } else if (*second == '\0') {
1.132 schwarze 2983: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2984: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 2985: second = " ";
2986: p--;
2987: }
2988:
2989: if (fsz > 1) {
1.80 schwarze 2990: roff_setstrn(&r->xmbtab, first, fsz,
2991: second, ssz, 0);
1.42 schwarze 2992: continue;
2993: }
2994:
1.110 schwarze 2995: if (r->xtab == NULL)
1.80 schwarze 2996: r->xtab = mandoc_calloc(128,
2997: sizeof(struct roffstr));
1.42 schwarze 2998:
2999: free(r->xtab[(int)*first].p);
3000: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3001: r->xtab[(int)*first].sz = ssz;
3002: }
3003:
1.149 schwarze 3004: return ROFF_IGN;
1.42 schwarze 3005: }
3006:
3007: static enum rofferr
1.14 schwarze 3008: roff_so(ROFF_ARGS)
3009: {
1.121 schwarze 3010: char *name, *cp;
1.15 schwarze 3011:
1.110 schwarze 3012: name = buf->buf + pos;
1.97 schwarze 3013: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3014:
1.22 schwarze 3015: /*
3016: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3017: * opening anything that's not in our cwd or anything beneath
3018: * it. Thus, explicitly disallow traversing up the file-system
3019: * or using absolute paths.
3020: */
3021:
1.110 schwarze 3022: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3023: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3024: ".so %s", name);
1.121 schwarze 3025: buf->sz = mandoc_asprintf(&cp,
3026: ".sp\nSee the file %s.\n.sp", name) + 1;
3027: free(buf->buf);
3028: buf->buf = cp;
3029: *offs = 0;
1.149 schwarze 3030: return ROFF_REPARSE;
1.14 schwarze 3031: }
3032:
3033: *offs = pos;
1.149 schwarze 3034: return ROFF_SO;
1.7 schwarze 3035: }
3036:
1.138 schwarze 3037: /* --- user defined strings and macros ------------------------------------ */
3038:
1.16 schwarze 3039: static enum rofferr
3040: roff_userdef(ROFF_ARGS)
1.12 schwarze 3041: {
1.135 schwarze 3042: const char *arg[9], *ap;
1.16 schwarze 3043: char *cp, *n1, *n2;
1.164 schwarze 3044: int expand_count, i, ib, ie;
1.135 schwarze 3045: size_t asz, rsz;
1.12 schwarze 3046:
1.16 schwarze 3047: /*
3048: * Collect pointers to macro argument strings
1.61 schwarze 3049: * and NUL-terminate them.
1.16 schwarze 3050: */
1.135 schwarze 3051:
1.145 schwarze 3052: r->argc = 0;
1.110 schwarze 3053: cp = buf->buf + pos;
1.145 schwarze 3054: for (i = 0; i < 9; i++) {
3055: if (*cp == '\0')
3056: arg[i] = "";
3057: else {
3058: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3059: r->argc = i + 1;
3060: }
3061: }
1.16 schwarze 3062:
3063: /*
3064: * Expand macro arguments.
1.12 schwarze 3065: */
1.135 schwarze 3066:
3067: buf->sz = strlen(r->current_string) + 1;
1.164 schwarze 3068: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.135 schwarze 3069: memcpy(n1, r->current_string, buf->sz);
1.164 schwarze 3070: expand_count = 0;
1.135 schwarze 3071: while (*cp != '\0') {
3072:
3073: /* Scan ahead for the next argument invocation. */
3074:
3075: if (*cp++ != '\\')
3076: continue;
3077: if (*cp++ != '$')
3078: continue;
1.146 schwarze 3079: if (*cp == '*') { /* \\$* inserts all arguments */
3080: ib = 0;
3081: ie = r->argc - 1;
3082: } else { /* \\$1 .. \\$9 insert one argument */
3083: ib = ie = *cp - '1';
3084: if (ib < 0 || ib > 8)
3085: continue;
3086: }
1.135 schwarze 3087: cp -= 2;
1.164 schwarze 3088:
3089: /*
3090: * Prevent infinite recursion.
3091: */
3092:
3093: if (cp >= n2)
3094: expand_count = 1;
3095: else if (++expand_count > EXPAND_LIMIT) {
3096: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3097: ln, (int)(cp - n1), NULL);
1.165 schwarze 3098: free(buf->buf);
3099: buf->buf = n1;
1.164 schwarze 3100: return ROFF_IGN;
3101: }
1.135 schwarze 3102:
3103: /*
3104: * Determine the size of the expanded argument,
3105: * taking escaping of quotes into account.
3106: */
3107:
1.146 schwarze 3108: asz = ie > ib ? ie - ib : 0; /* for blanks */
3109: for (i = ib; i <= ie; i++) {
3110: for (ap = arg[i]; *ap != '\0'; ap++) {
3111: asz++;
3112: if (*ap == '"')
3113: asz += 3;
3114: }
1.135 schwarze 3115: }
3116: if (asz != 3) {
3117:
3118: /*
3119: * Determine the size of the rest of the
3120: * unexpanded macro, including the NUL.
3121: */
3122:
3123: rsz = buf->sz - (cp - n1) - 3;
3124:
3125: /*
3126: * When shrinking, move before
3127: * releasing the storage.
3128: */
3129:
3130: if (asz < 3)
3131: memmove(cp + asz, cp + 3, rsz);
3132:
3133: /*
3134: * Resize the storage for the macro
3135: * and readjust the parse pointer.
3136: */
3137:
3138: buf->sz += asz - 3;
3139: n2 = mandoc_realloc(n1, buf->sz);
3140: cp = n2 + (cp - n1);
3141: n1 = n2;
3142:
3143: /*
3144: * When growing, make room
3145: * for the expanded argument.
3146: */
3147:
3148: if (asz > 3)
3149: memmove(cp + asz, cp + 3, rsz);
3150: }
3151:
3152: /* Copy the expanded argument, escaping quotes. */
3153:
3154: n2 = cp;
1.146 schwarze 3155: for (i = ib; i <= ie; i++) {
3156: for (ap = arg[i]; *ap != '\0'; ap++) {
3157: if (*ap == '"') {
3158: memcpy(n2, "\\(dq", 4);
3159: n2 += 4;
3160: } else
3161: *n2++ = *ap;
3162: }
3163: if (i < ie)
3164: *n2++ = ' ';
1.16 schwarze 3165: }
1.12 schwarze 3166: }
3167:
1.16 schwarze 3168: /*
3169: * Replace the macro invocation
3170: * by the expanded macro.
3171: */
1.135 schwarze 3172:
1.110 schwarze 3173: free(buf->buf);
3174: buf->buf = n1;
1.120 schwarze 3175: *offs = 0;
1.16 schwarze 3176:
1.149 schwarze 3177: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3178: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3179: }
1.28 schwarze 3180:
1.85 schwarze 3181: static size_t
1.28 schwarze 3182: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3183: {
3184: char *name, *cp;
1.85 schwarze 3185: size_t namesz;
1.28 schwarze 3186:
3187: name = *cpp;
3188: if ('\0' == *name)
1.149 schwarze 3189: return 0;
1.28 schwarze 3190:
1.85 schwarze 3191: /* Read until end of name and terminate it with NUL. */
3192: for (cp = name; 1; cp++) {
3193: if ('\0' == *cp || ' ' == *cp) {
3194: namesz = cp - name;
3195: break;
3196: }
1.28 schwarze 3197: if ('\\' != *cp)
3198: continue;
1.88 schwarze 3199: namesz = cp - name;
3200: if ('{' == cp[1] || '}' == cp[1])
3201: break;
1.28 schwarze 3202: cp++;
3203: if ('\\' == *cp)
3204: continue;
1.97 schwarze 3205: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3206: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3207: mandoc_escape((const char **)&cp, NULL, NULL);
3208: break;
1.28 schwarze 3209: }
3210:
3211: /* Read past spaces. */
3212: while (' ' == *cp)
3213: cp++;
3214:
3215: *cpp = cp;
1.149 schwarze 3216: return namesz;
1.28 schwarze 3217: }
3218:
1.16 schwarze 3219: /*
3220: * Store *string into the user-defined string called *name.
3221: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3222: * append == 0: replace mode
3223: * append == 1: single-line append mode
3224: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3225: */
1.8 schwarze 3226: static void
1.16 schwarze 3227: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3228: int append)
1.7 schwarze 3229: {
1.42 schwarze 3230:
3231: roff_setstrn(&r->strtab, name, strlen(name), string,
1.80 schwarze 3232: string ? strlen(string) : 0, append);
1.42 schwarze 3233: }
3234:
3235: static void
3236: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3237: const char *string, size_t stringsz, int append)
1.42 schwarze 3238: {
3239: struct roffkv *n;
3240: char *c;
3241: int i;
3242: size_t oldch, newch;
1.7 schwarze 3243:
1.16 schwarze 3244: /* Search for an existing string with the same name. */
1.42 schwarze 3245: n = *r;
3246:
1.84 schwarze 3247: while (n && (namesz != n->key.sz ||
3248: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3249: n = n->next;
1.8 schwarze 3250:
3251: if (NULL == n) {
1.16 schwarze 3252: /* Create a new string table entry. */
1.42 schwarze 3253: n = mandoc_malloc(sizeof(struct roffkv));
3254: n->key.p = mandoc_strndup(name, namesz);
3255: n->key.sz = namesz;
3256: n->val.p = NULL;
3257: n->val.sz = 0;
3258: n->next = *r;
3259: *r = n;
1.66 schwarze 3260: } else if (0 == append) {
1.42 schwarze 3261: free(n->val.p);
3262: n->val.p = NULL;
3263: n->val.sz = 0;
1.16 schwarze 3264: }
3265:
3266: if (NULL == string)
3267: return;
3268:
3269: /*
3270: * One additional byte for the '\n' in multiline mode,
3271: * and one for the terminating '\0'.
3272: */
1.66 schwarze 3273: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3274:
3275: if (NULL == n->val.p) {
3276: n->val.p = mandoc_malloc(newch);
3277: *n->val.p = '\0';
1.16 schwarze 3278: oldch = 0;
3279: } else {
1.42 schwarze 3280: oldch = n->val.sz;
3281: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3282: }
3283:
3284: /* Skip existing content in the destination buffer. */
1.42 schwarze 3285: c = n->val.p + (int)oldch;
1.16 schwarze 3286:
3287: /* Append new content to the destination buffer. */
1.42 schwarze 3288: i = 0;
3289: while (i < (int)stringsz) {
1.16 schwarze 3290: /*
3291: * Rudimentary roff copy mode:
3292: * Handle escaped backslashes.
3293: */
1.42 schwarze 3294: if ('\\' == string[i] && '\\' == string[i + 1])
3295: i++;
3296: *c++ = string[i++];
1.16 schwarze 3297: }
1.8 schwarze 3298:
1.16 schwarze 3299: /* Append terminating bytes. */
1.66 schwarze 3300: if (1 < append)
1.16 schwarze 3301: *c++ = '\n';
1.42 schwarze 3302:
1.16 schwarze 3303: *c = '\0';
1.42 schwarze 3304: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3305: }
3306:
1.8 schwarze 3307: static const char *
3308: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.7 schwarze 3309: {
1.42 schwarze 3310: const struct roffkv *n;
1.64 schwarze 3311: int i;
1.7 schwarze 3312:
1.42 schwarze 3313: for (n = r->strtab; n; n = n->next)
1.80 schwarze 3314: if (0 == strncmp(name, n->key.p, len) &&
3315: '\0' == n->key.p[(int)len])
1.149 schwarze 3316: return n->val.p;
1.64 schwarze 3317:
3318: for (i = 0; i < PREDEFS_MAX; i++)
3319: if (0 == strncmp(name, predefs[i].name, len) &&
3320: '\0' == predefs[i].name[(int)len])
1.149 schwarze 3321: return predefs[i].str;
1.8 schwarze 3322:
1.149 schwarze 3323: return NULL;
1.7 schwarze 3324: }
3325:
1.8 schwarze 3326: static void
1.42 schwarze 3327: roff_freestr(struct roffkv *r)
1.7 schwarze 3328: {
1.42 schwarze 3329: struct roffkv *n, *nn;
1.7 schwarze 3330:
1.42 schwarze 3331: for (n = r; n; n = nn) {
3332: free(n->key.p);
3333: free(n->val.p);
1.7 schwarze 3334: nn = n->next;
3335: free(n);
3336: }
1.27 schwarze 3337: }
1.138 schwarze 3338:
3339: /* --- accessors and utility functions ------------------------------------ */
1.27 schwarze 3340:
3341: const struct tbl_span *
3342: roff_span(const struct roff *r)
3343: {
1.80 schwarze 3344:
1.149 schwarze 3345: return r->tbl ? tbl_span(r->tbl) : NULL;
1.32 schwarze 3346: }
3347:
3348: const struct eqn *
3349: roff_eqn(const struct roff *r)
3350: {
1.80 schwarze 3351:
1.149 schwarze 3352: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.42 schwarze 3353: }
3354:
3355: /*
3356: * Duplicate an input string, making the appropriate character
3357: * conversations (as stipulated by `tr') along the way.
3358: * Returns a heap-allocated string with all the replacements made.
3359: */
3360: char *
3361: roff_strdup(const struct roff *r, const char *p)
3362: {
3363: const struct roffkv *cp;
3364: char *res;
3365: const char *pp;
3366: size_t ssz, sz;
3367: enum mandoc_esc esc;
3368:
3369: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3370: return mandoc_strdup(p);
1.42 schwarze 3371: else if ('\0' == *p)
1.149 schwarze 3372: return mandoc_strdup("");
1.42 schwarze 3373:
3374: /*
3375: * Step through each character looking for term matches
3376: * (remember that a `tr' can be invoked with an escape, which is
3377: * a glyph but the escape is multi-character).
3378: * We only do this if the character hash has been initialised
3379: * and the string is >0 length.
3380: */
3381:
3382: res = NULL;
3383: ssz = 0;
3384:
3385: while ('\0' != *p) {
1.161 schwarze 3386: assert((unsigned int)*p < 128);
3387: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3388: sz = r->xtab[(int)*p].sz;
3389: res = mandoc_realloc(res, ssz + sz + 1);
3390: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3391: ssz += sz;
3392: p++;
3393: continue;
3394: } else if ('\\' != *p) {
3395: res = mandoc_realloc(res, ssz + 2);
3396: res[ssz++] = *p++;
3397: continue;
3398: }
3399:
3400: /* Search for term matches. */
3401: for (cp = r->xmbtab; cp; cp = cp->next)
3402: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3403: break;
3404:
3405: if (NULL != cp) {
3406: /*
3407: * A match has been found.
3408: * Append the match to the array and move
3409: * forward by its keysize.
3410: */
1.80 schwarze 3411: res = mandoc_realloc(res,
3412: ssz + cp->val.sz + 1);
1.42 schwarze 3413: memcpy(res + ssz, cp->val.p, cp->val.sz);
3414: ssz += cp->val.sz;
3415: p += (int)cp->key.sz;
3416: continue;
3417: }
3418:
3419: /*
3420: * Handle escapes carefully: we need to copy
3421: * over just the escape itself, or else we might
3422: * do replacements within the escape itself.
3423: * Make sure to pass along the bogus string.
3424: */
3425: pp = p++;
3426: esc = mandoc_escape(&p, NULL, NULL);
3427: if (ESCAPE_ERROR == esc) {
3428: sz = strlen(pp);
3429: res = mandoc_realloc(res, ssz + sz + 1);
3430: memcpy(res + ssz, pp, sz);
3431: break;
3432: }
1.80 schwarze 3433: /*
3434: * We bail out on bad escapes.
1.42 schwarze 3435: * No need to warn: we already did so when
3436: * roff_res() was called.
3437: */
3438: sz = (int)(p - pp);
3439: res = mandoc_realloc(res, ssz + sz + 1);
3440: memcpy(res + ssz, pp, sz);
3441: ssz += sz;
3442: }
3443:
3444: res[(int)ssz] = '\0';
1.149 schwarze 3445: return res;
1.99 schwarze 3446: }
3447:
3448: int
3449: roff_getformat(const struct roff *r)
3450: {
3451:
1.149 schwarze 3452: return r->format;
1.48 schwarze 3453: }
3454:
3455: /*
1.80 schwarze 3456: * Find out whether a line is a macro line or not.
1.48 schwarze 3457: * If it is, adjust the current position and return one; if it isn't,
3458: * return zero and don't change the current position.
3459: * If the control character has been set with `.cc', then let that grain
3460: * precedence.
3461: * This is slighly contrary to groff, where using the non-breaking
3462: * control character when `cc' has been invoked will cause the
3463: * non-breaking macro contents to be printed verbatim.
3464: */
3465: int
3466: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3467: {
3468: int pos;
3469:
3470: pos = *ppos;
3471:
1.175 schwarze 3472: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 3473: pos++;
1.175 schwarze 3474: else if (r->control != '\0')
1.149 schwarze 3475: return 0;
1.48 schwarze 3476: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3477: pos += 2;
3478: else if ('.' == cp[pos] || '\'' == cp[pos])
3479: pos++;
3480: else
1.149 schwarze 3481: return 0;
1.48 schwarze 3482:
3483: while (' ' == cp[pos] || '\t' == cp[pos])
3484: pos++;
3485:
3486: *ppos = pos;
1.149 schwarze 3487: return 1;
1.1 schwarze 3488: }
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