Annotation of src/usr.bin/mandoc/roff.c, Revision 1.184
1.184 ! schwarze 1: /* $OpenBSD: roff.c,v 1.183 2017/06/14 19:39:05 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 */
1.178 schwarze 84: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 85: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
86: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 87: const char *current_string; /* value of last called user macro */
1.27 schwarze 88: struct tbl_node *first_tbl; /* first table parsed */
89: struct tbl_node *last_tbl; /* last table parsed */
90: struct tbl_node *tbl; /* current table being parsed */
1.32 schwarze 91: struct eqn_node *last_eqn; /* last equation parsed */
92: struct eqn_node *first_eqn; /* first equation parsed */
93: struct eqn_node *eqn; /* current equation being parsed */
1.102 schwarze 94: int eqn_inline; /* current equation is inline */
1.96 schwarze 95: int options; /* parse options */
96: int rstacksz; /* current size limit of rstack */
97: int rstackpos; /* position in rstack */
1.99 schwarze 98: int format; /* current file in mdoc or man format */
1.145 schwarze 99: int argc; /* number of args of the last macro */
1.96 schwarze 100: char control; /* control character */
1.175 schwarze 101: char escape; /* escape character */
1.1 schwarze 102: };
103:
104: struct roffnode {
1.166 schwarze 105: enum roff_tok tok; /* type of node */
1.1 schwarze 106: struct roffnode *parent; /* up one in stack */
107: int line; /* parse line */
108: int col; /* parse col */
1.16 schwarze 109: char *name; /* node name, e.g. macro name */
1.2 schwarze 110: char *end; /* end-rules: custom token */
111: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 112: int rule; /* current evaluation rule */
1.1 schwarze 113: };
114:
115: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 116: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 117: struct buf *buf, /* input buffer */ \
1.1 schwarze 118: int ln, /* parse line */ \
1.2 schwarze 119: int ppos, /* original pos in buffer */ \
120: int pos, /* current pos in buffer */ \
121: int *offs /* reset offset of buffer data */
1.1 schwarze 122:
123: typedef enum rofferr (*roffproc)(ROFF_ARGS);
124:
125: struct roffmac {
1.2 schwarze 126: roffproc proc; /* process new macro */
127: roffproc text; /* process as child text of macro */
128: roffproc sub; /* process as child of macro */
129: int flags;
130: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 131: };
132:
1.37 schwarze 133: struct predef {
134: const char *name; /* predefined input name */
135: const char *str; /* replacement symbol */
136: };
137:
138: #define PREDEF(__name, __str) \
139: { (__name), (__str) },
140:
1.138 schwarze 141: /* --- function prototypes ------------------------------------------------ */
142:
1.42 schwarze 143: static void roffnode_cleanscope(struct roff *);
144: static void roffnode_pop(struct roff *);
1.166 schwarze 145: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 146: const char *, int, int);
1.183 schwarze 147: static enum rofferr roff_als(ROFF_ARGS);
1.2 schwarze 148: static enum rofferr roff_block(ROFF_ARGS);
149: static enum rofferr roff_block_text(ROFF_ARGS);
150: static enum rofferr roff_block_sub(ROFF_ARGS);
1.168 schwarze 151: static enum rofferr roff_br(ROFF_ARGS);
1.2 schwarze 152: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 153: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 154: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 155: static enum rofferr roff_cond(ROFF_ARGS);
156: static enum rofferr roff_cond_text(ROFF_ARGS);
157: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 158: static enum rofferr roff_ds(ROFF_ARGS);
1.175 schwarze 159: static enum rofferr roff_ec(ROFF_ARGS);
160: static enum rofferr roff_eo(ROFF_ARGS);
1.110 schwarze 161: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 162: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 163: static int roff_evalnum(struct roff *, int,
164: const char *, int *, int *, int);
165: static int roff_evalpar(struct roff *, int,
1.133 schwarze 166: const char *, int *, int *, int);
1.71 schwarze 167: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 168: static void roff_free1(struct roff *);
1.52 schwarze 169: static void roff_freereg(struct roffreg *);
1.42 schwarze 170: static void roff_freestr(struct roffkv *);
1.85 schwarze 171: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 172: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 173: static int roff_getop(const char *, int *, char *);
1.53 schwarze 174: static int roff_getregn(const struct roff *,
175: const char *, size_t);
1.145 schwarze 176: static int roff_getregro(const struct roff *,
177: const char *name);
1.178 schwarze 178: static const char *roff_getrenn(const struct roff *,
179: const char *, size_t);
1.80 schwarze 180: static const char *roff_getstrn(const struct roff *,
1.8 schwarze 181: const char *, size_t);
1.143 schwarze 182: static int roff_hasregn(const struct roff *,
183: const char *, size_t);
1.123 schwarze 184: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 185: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 186: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 187: static void roff_man_alloc1(struct roff_man *);
188: static void roff_man_free1(struct roff_man *);
1.172 schwarze 189: static enum rofferr roff_manyarg(ROFF_ARGS);
1.6 schwarze 190: static enum rofferr roff_nr(ROFF_ARGS);
1.169 schwarze 191: static enum rofferr roff_onearg(ROFF_ARGS);
1.166 schwarze 192: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 193: int, int);
1.177 schwarze 194: static enum rofferr roff_parsetext(struct roff *, struct buf *,
195: int, int *);
1.178 schwarze 196: static enum rofferr roff_renamed(ROFF_ARGS);
1.110 schwarze 197: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 198: static enum rofferr roff_rm(ROFF_ARGS);
1.178 schwarze 199: static enum rofferr roff_rn(ROFF_ARGS);
1.76 schwarze 200: static enum rofferr roff_rr(ROFF_ARGS);
1.8 schwarze 201: static void roff_setstr(struct roff *,
1.16 schwarze 202: const char *, const char *, int);
1.80 schwarze 203: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 204: size_t, const char *, size_t, int);
1.14 schwarze 205: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 206: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 207: static enum rofferr roff_Dd(ROFF_ARGS);
208: static enum rofferr roff_TH(ROFF_ARGS);
1.27 schwarze 209: static enum rofferr roff_TE(ROFF_ARGS);
210: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 211: static enum rofferr roff_EQ(ROFF_ARGS);
212: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 213: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 214: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 215: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 216:
1.138 schwarze 217: /* --- constant data ------------------------------------------------------ */
218:
1.133 schwarze 219: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
220: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
221:
1.166 schwarze 222: const char *__roff_name[MAN_MAX + 1] = {
1.177 schwarze 223: "br", "ce", "ft", "ll",
1.184 ! schwarze 224: "mc", "po", "rj", "sp",
! 225: "ta", "ti", NULL,
1.166 schwarze 226: "ab", "ad", "af", "aln",
227: "als", "am", "am1", "ami",
228: "ami1", "as", "as1", "asciify",
229: "backtrace", "bd", "bleedat", "blm",
230: "box", "boxa", "bp", "BP",
231: "break", "breakchar", "brnl", "brp",
1.177 schwarze 232: "brpnl", "c2", "cc",
1.166 schwarze 233: "cf", "cflags", "ch", "char",
234: "chop", "class", "close", "CL",
235: "color", "composite", "continue", "cp",
236: "cropat", "cs", "cu", "da",
237: "dch", "Dd", "de", "de1",
238: "defcolor", "dei", "dei1", "device",
239: "devicem", "di", "do", "ds",
240: "ds1", "dwh", "dt", "ec",
241: "ecr", "ecs", "el", "em",
242: "EN", "eo", "EP", "EQ",
243: "errprint", "ev", "evc", "ex",
244: "fallback", "fam", "fc", "fchar",
245: "fcolor", "fdeferlig", "feature", "fkern",
246: "fl", "flig", "fp", "fps",
247: "fschar", "fspacewidth", "fspecial", "ftr",
248: "fzoom", "gcolor", "hc", "hcode",
249: "hidechar", "hla", "hlm", "hpf",
250: "hpfa", "hpfcode", "hw", "hy",
251: "hylang", "hylen", "hym", "hypp",
252: "hys", "ie", "if", "ig",
253: "index", "it", "itc", "IX",
254: "kern", "kernafter", "kernbefore", "kernpair",
255: "lc", "lc_ctype", "lds", "length",
256: "letadj", "lf", "lg", "lhang",
257: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 258: "ls", "lsm", "lt",
1.166 schwarze 259: "mediasize", "minss", "mk", "mso",
260: "na", "ne", "nh", "nhychar",
261: "nm", "nn", "nop", "nr",
262: "nrf", "nroff", "ns", "nx",
263: "open", "opena", "os", "output",
264: "padj", "papersize", "pc", "pev",
265: "pi", "PI", "pl", "pm",
1.184 ! schwarze 266: "pn", "pnr", "ps",
1.166 schwarze 267: "psbb", "pshape", "pso", "ptr",
268: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 269: "return", "rfschar", "rhang",
1.166 schwarze 270: "rm", "rn", "rnn", "rr",
271: "rs", "rt", "schar", "sentchar",
272: "shc", "shift", "sizes", "so",
273: "spacewidth", "special", "spreadwarn", "ss",
274: "sty", "substring", "sv", "sy",
1.172 schwarze 275: "T&", "tc", "TE",
1.173 schwarze 276: "TH", "tkf", "tl",
1.166 schwarze 277: "tm", "tm1", "tmc", "tr",
278: "track", "transchar", "trf", "trimat",
279: "trin", "trnt", "troff", "TS",
280: "uf", "ul", "unformat", "unwatch",
281: "unwatchn", "vpt", "vs", "warn",
282: "warnscale", "watch", "watchlength", "watchn",
283: "wh", "while", "write", "writec",
284: "writem", "xflag", ".", NULL,
1.178 schwarze 285: NULL, "text",
1.166 schwarze 286: "Dd", "Dt", "Os", "Sh",
287: "Ss", "Pp", "D1", "Dl",
288: "Bd", "Ed", "Bl", "El",
289: "It", "Ad", "An", "Ap",
290: "Ar", "Cd", "Cm", "Dv",
291: "Er", "Ev", "Ex", "Fa",
292: "Fd", "Fl", "Fn", "Ft",
293: "Ic", "In", "Li", "Nd",
294: "Nm", "Op", "Ot", "Pa",
295: "Rv", "St", "Va", "Vt",
296: "Xr", "%A", "%B", "%D",
297: "%I", "%J", "%N", "%O",
298: "%P", "%R", "%T", "%V",
299: "Ac", "Ao", "Aq", "At",
300: "Bc", "Bf", "Bo", "Bq",
301: "Bsx", "Bx", "Db", "Dc",
302: "Do", "Dq", "Ec", "Ef",
303: "Em", "Eo", "Fx", "Ms",
304: "No", "Ns", "Nx", "Ox",
305: "Pc", "Pf", "Po", "Pq",
306: "Qc", "Ql", "Qo", "Qq",
307: "Re", "Rs", "Sc", "So",
308: "Sq", "Sm", "Sx", "Sy",
309: "Tn", "Ux", "Xc", "Xo",
310: "Fo", "Fc", "Oo", "Oc",
311: "Bk", "Ek", "Bt", "Hf",
312: "Fr", "Ud", "Lb", "Lp",
313: "Lk", "Mt", "Brq", "Bro",
314: "Brc", "%C", "Es", "En",
1.171 schwarze 315: "Dx", "%Q", "%U", "Ta",
316: NULL,
1.166 schwarze 317: "TH", "SH", "SS", "TP",
318: "LP", "PP", "P", "IP",
319: "HP", "SM", "SB", "BI",
320: "IB", "BR", "RB", "R",
321: "B", "I", "IR", "RI",
1.171 schwarze 322: "nf", "fi",
1.166 schwarze 323: "RE", "RS", "DT", "UC",
1.169 schwarze 324: "PD", "AT", "in",
1.166 schwarze 325: "OP", "EX", "EE", "UR",
1.170 schwarze 326: "UE", NULL
1.166 schwarze 327: };
328: const char *const *roff_name = __roff_name;
329:
330: static struct roffmac roffs[TOKEN_NONE] = {
1.168 schwarze 331: { roff_br, NULL, NULL, 0 }, /* br */
1.177 schwarze 332: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.169 schwarze 333: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 334: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 335: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.184 ! schwarze 336: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 337: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 338: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 339: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 340: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 341: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 342: { roff_unsupp, NULL, NULL, 0 }, /* ab */
343: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
344: { roff_line_ignore, NULL, NULL, 0 }, /* af */
345: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 346: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 347: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
348: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
349: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
350: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
351: { roff_ds, NULL, NULL, 0 }, /* as */
352: { roff_ds, NULL, NULL, 0 }, /* as1 */
353: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
354: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
355: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
356: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
357: { roff_unsupp, NULL, NULL, 0 }, /* blm */
358: { roff_unsupp, NULL, NULL, 0 }, /* box */
359: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
360: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
361: { roff_unsupp, NULL, NULL, 0 }, /* BP */
362: { roff_unsupp, NULL, NULL, 0 }, /* break */
363: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
364: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 schwarze 365: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 366: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
367: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
368: { roff_cc, NULL, NULL, 0 }, /* cc */
369: { roff_insec, NULL, NULL, 0 }, /* cf */
370: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
371: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
372: { roff_unsupp, NULL, NULL, 0 }, /* char */
373: { roff_unsupp, NULL, NULL, 0 }, /* chop */
374: { roff_line_ignore, NULL, NULL, 0 }, /* class */
375: { roff_insec, NULL, NULL, 0 }, /* close */
376: { roff_unsupp, NULL, NULL, 0 }, /* CL */
377: { roff_line_ignore, NULL, NULL, 0 }, /* color */
378: { roff_unsupp, NULL, NULL, 0 }, /* composite */
379: { roff_unsupp, NULL, NULL, 0 }, /* continue */
380: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
381: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
382: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
383: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
384: { roff_unsupp, NULL, NULL, 0 }, /* da */
385: { roff_unsupp, NULL, NULL, 0 }, /* dch */
386: { roff_Dd, NULL, NULL, 0 }, /* Dd */
387: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
388: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
389: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
390: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
391: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
392: { roff_unsupp, NULL, NULL, 0 }, /* device */
393: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
394: { roff_unsupp, NULL, NULL, 0 }, /* di */
395: { roff_unsupp, NULL, NULL, 0 }, /* do */
396: { roff_ds, NULL, NULL, 0 }, /* ds */
397: { roff_ds, NULL, NULL, 0 }, /* ds1 */
398: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
399: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 400: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 401: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
402: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
403: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
404: { roff_unsupp, NULL, NULL, 0 }, /* em */
405: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 406: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 407: { roff_unsupp, NULL, NULL, 0 }, /* EP */
408: { roff_EQ, NULL, NULL, 0 }, /* EQ */
409: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
410: { roff_unsupp, NULL, NULL, 0 }, /* ev */
411: { roff_unsupp, NULL, NULL, 0 }, /* evc */
412: { roff_unsupp, NULL, NULL, 0 }, /* ex */
413: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
414: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
415: { roff_unsupp, NULL, NULL, 0 }, /* fc */
416: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
417: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
418: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
419: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
420: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
421: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
422: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
423: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
424: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
425: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
426: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
427: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
428: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
429: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
430: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
431: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
432: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
433: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
434: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
435: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
436: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
437: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
438: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
439: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
440: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
441: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
442: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
443: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
444: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
445: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
446: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
447: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
448: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
449: { roff_unsupp, NULL, NULL, 0 }, /* index */
450: { roff_it, NULL, NULL, 0 }, /* it */
451: { roff_unsupp, NULL, NULL, 0 }, /* itc */
452: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
453: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
454: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
455: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
456: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
457: { roff_unsupp, NULL, NULL, 0 }, /* lc */
458: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
459: { roff_unsupp, NULL, NULL, 0 }, /* lds */
460: { roff_unsupp, NULL, NULL, 0 }, /* length */
461: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
462: { roff_insec, NULL, NULL, 0 }, /* lf */
463: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
464: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
465: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
466: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
467: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
468: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
469: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
470: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
471: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
472: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
473: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
474: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
475: { roff_insec, NULL, NULL, 0 }, /* mso */
476: { roff_line_ignore, NULL, NULL, 0 }, /* na */
477: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
478: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
479: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
480: { roff_unsupp, NULL, NULL, 0 }, /* nm */
481: { roff_unsupp, NULL, NULL, 0 }, /* nn */
482: { roff_unsupp, NULL, NULL, 0 }, /* nop */
483: { roff_nr, NULL, NULL, 0 }, /* nr */
484: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
485: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
486: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
487: { roff_insec, NULL, NULL, 0 }, /* nx */
488: { roff_insec, NULL, NULL, 0 }, /* open */
489: { roff_insec, NULL, NULL, 0 }, /* opena */
490: { roff_line_ignore, NULL, NULL, 0 }, /* os */
491: { roff_unsupp, NULL, NULL, 0 }, /* output */
492: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
493: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
494: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
495: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
496: { roff_insec, NULL, NULL, 0 }, /* pi */
497: { roff_unsupp, NULL, NULL, 0 }, /* PI */
498: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
499: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
500: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
501: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
502: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
503: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
504: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
505: { roff_insec, NULL, NULL, 0 }, /* pso */
506: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
507: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
508: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
509: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
510: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
511: { roff_unsupp, NULL, NULL, 0 }, /* return */
512: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
513: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
514: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 515: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 516: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
517: { roff_rr, NULL, NULL, 0 }, /* rr */
518: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
519: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
520: { roff_unsupp, NULL, NULL, 0 }, /* schar */
521: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
522: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
523: { roff_unsupp, NULL, NULL, 0 }, /* shift */
524: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
525: { roff_so, NULL, NULL, 0 }, /* so */
526: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
527: { roff_line_ignore, NULL, NULL, 0 }, /* special */
528: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
529: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
530: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
531: { roff_unsupp, NULL, NULL, 0 }, /* substring */
532: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
533: { roff_insec, NULL, NULL, 0 }, /* sy */
534: { roff_T_, NULL, NULL, 0 }, /* T& */
535: { roff_unsupp, NULL, NULL, 0 }, /* tc */
536: { roff_TE, NULL, NULL, 0 }, /* TE */
537: { roff_TH, NULL, NULL, 0 }, /* TH */
538: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
539: { roff_unsupp, NULL, NULL, 0 }, /* tl */
540: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
541: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
542: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
543: { roff_tr, NULL, NULL, 0 }, /* tr */
544: { roff_line_ignore, NULL, NULL, 0 }, /* track */
545: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
546: { roff_insec, NULL, NULL, 0 }, /* trf */
547: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
548: { roff_unsupp, NULL, NULL, 0 }, /* trin */
549: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
550: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
551: { roff_TS, NULL, NULL, 0 }, /* TS */
552: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
553: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
554: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
555: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
556: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
557: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
558: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
559: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
560: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
561: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
562: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
563: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
564: { roff_unsupp, NULL, NULL, 0 }, /* wh */
565: { roff_unsupp, NULL, NULL, 0 }, /* while */
566: { roff_insec, NULL, NULL, 0 }, /* write */
567: { roff_insec, NULL, NULL, 0 }, /* writec */
568: { roff_insec, NULL, NULL, 0 }, /* writem */
569: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
570: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 571: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 572: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 573: };
574:
1.73 schwarze 575: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.47 schwarze 576: const char *const __mdoc_reserved[] = {
577: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
578: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
579: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
580: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.73 schwarze 581: "Dt", "Dv", "Dx", "D1",
582: "Ec", "Ed", "Ef", "Ek", "El", "Em",
583: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.47 schwarze 584: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.73 schwarze 585: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
586: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.47 schwarze 587: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.73 schwarze 588: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
589: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
590: "Sc", "Sh", "Sm", "So", "Sq",
1.47 schwarze 591: "Ss", "St", "Sx", "Sy",
592: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.73 schwarze 593: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.47 schwarze 594: "%P", "%Q", "%R", "%T", "%U", "%V",
595: NULL
596: };
597:
1.73 schwarze 598: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.47 schwarze 599: const char *const __man_reserved[] = {
1.73 schwarze 600: "AT", "B", "BI", "BR", "DT",
601: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
602: "LP", "OP", "P", "PD", "PP",
603: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
604: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.47 schwarze 605: NULL
606: };
607:
1.37 schwarze 608: /* Array of injected predefined strings. */
609: #define PREDEFS_MAX 38
610: static const struct predef predefs[PREDEFS_MAX] = {
611: #include "predefs.in"
612: };
613:
1.177 schwarze 614: static int roffce_lines; /* number of input lines to center */
615: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 616: static int roffit_lines; /* number of lines to delay */
617: static char *roffit_macro; /* nil-terminated macro line */
618:
1.80 schwarze 619:
1.138 schwarze 620: /* --- request table ------------------------------------------------------ */
621:
1.167 schwarze 622: struct ohash *
623: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 624: {
1.167 schwarze 625: struct ohash *htab;
626: struct roffreq *req;
627: enum roff_tok tok;
628: size_t sz;
629: unsigned int slot;
1.3 schwarze 630:
1.167 schwarze 631: htab = mandoc_malloc(sizeof(*htab));
632: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 633:
1.167 schwarze 634: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 635: if (roff_name[tok] == NULL)
636: continue;
1.167 schwarze 637: sz = strlen(roff_name[tok]);
638: req = mandoc_malloc(sizeof(*req) + sz + 1);
639: req->tok = tok;
640: memcpy(req->name, roff_name[tok], sz + 1);
641: slot = ohash_qlookup(htab, req->name);
642: ohash_insert(htab, slot, req);
1.3 schwarze 643: }
1.167 schwarze 644: return htab;
1.3 schwarze 645: }
646:
1.167 schwarze 647: void
648: roffhash_free(struct ohash *htab)
1.1 schwarze 649: {
1.167 schwarze 650: struct roffreq *req;
651: unsigned int slot;
1.1 schwarze 652:
1.167 schwarze 653: if (htab == NULL)
654: return;
655: for (req = ohash_first(htab, &slot); req != NULL;
656: req = ohash_next(htab, &slot))
657: free(req);
658: ohash_delete(htab);
659: free(htab);
660: }
661:
662: enum roff_tok
663: roffhash_find(struct ohash *htab, const char *name, size_t sz)
664: {
665: struct roffreq *req;
666: const char *end;
667:
668: if (sz) {
669: end = name + sz;
670: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
671: } else
672: req = ohash_find(htab, ohash_qlookup(htab, name));
673: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 674: }
675:
1.138 schwarze 676: /* --- stack of request blocks -------------------------------------------- */
677:
1.1 schwarze 678: /*
679: * Pop the current node off of the stack of roff instructions currently
680: * pending.
681: */
682: static void
683: roffnode_pop(struct roff *r)
684: {
685: struct roffnode *p;
686:
1.2 schwarze 687: assert(r->last);
1.80 schwarze 688: p = r->last;
1.2 schwarze 689:
690: r->last = r->last->parent;
1.16 schwarze 691: free(p->name);
692: free(p->end);
1.1 schwarze 693: free(p);
694: }
695:
696: /*
697: * Push a roff node onto the instruction stack. This must later be
698: * removed with roffnode_pop().
699: */
1.11 schwarze 700: static void
1.166 schwarze 701: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 702: int line, int col)
1.1 schwarze 703: {
704: struct roffnode *p;
705:
1.11 schwarze 706: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 707: p->tok = tok;
1.16 schwarze 708: if (name)
709: p->name = mandoc_strdup(name);
1.1 schwarze 710: p->parent = r->last;
711: p->line = line;
712: p->col = col;
1.71 schwarze 713: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 714:
715: r->last = p;
716: }
717:
1.138 schwarze 718: /* --- roff parser state data management ---------------------------------- */
719:
1.1 schwarze 720: static void
721: roff_free1(struct roff *r)
722: {
1.49 schwarze 723: struct tbl_node *tbl;
1.32 schwarze 724: struct eqn_node *e;
1.42 schwarze 725: int i;
1.27 schwarze 726:
1.49 schwarze 727: while (NULL != (tbl = r->first_tbl)) {
728: r->first_tbl = tbl->next;
729: tbl_free(tbl);
1.27 schwarze 730: }
731: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 732:
1.32 schwarze 733: while (NULL != (e = r->first_eqn)) {
734: r->first_eqn = e->next;
735: eqn_free(e);
736: }
737: r->first_eqn = r->last_eqn = r->eqn = NULL;
738:
1.1 schwarze 739: while (r->last)
740: roffnode_pop(r);
1.27 schwarze 741:
1.96 schwarze 742: free (r->rstack);
743: r->rstack = NULL;
744: r->rstacksz = 0;
745: r->rstackpos = -1;
746:
747: roff_freereg(r->regtab);
748: r->regtab = NULL;
749:
1.42 schwarze 750: roff_freestr(r->strtab);
1.178 schwarze 751: roff_freestr(r->rentab);
1.42 schwarze 752: roff_freestr(r->xmbtab);
1.178 schwarze 753: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 754:
755: if (r->xtab)
756: for (i = 0; i < 128; i++)
757: free(r->xtab[i].p);
758: free(r->xtab);
759: r->xtab = NULL;
1.1 schwarze 760: }
761:
762: void
763: roff_reset(struct roff *r)
764: {
765: roff_free1(r);
1.99 schwarze 766: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 767: r->control = '\0';
768: r->escape = '\\';
1.179 schwarze 769: roffce_lines = 0;
770: roffce_node = NULL;
771: roffit_lines = 0;
772: roffit_macro = NULL;
1.1 schwarze 773: }
774:
775: void
776: roff_free(struct roff *r)
777: {
778: roff_free1(r);
1.167 schwarze 779: roffhash_free(r->reqtab);
1.1 schwarze 780: free(r);
781: }
782:
783: struct roff *
1.151 schwarze 784: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 785: {
786: struct roff *r;
787:
1.11 schwarze 788: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 789: r->parse = parse;
1.167 schwarze 790: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.72 schwarze 791: r->options = options;
1.99 schwarze 792: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 793: r->rstackpos = -1;
1.175 schwarze 794: r->escape = '\\';
1.149 schwarze 795: return r;
1.137 schwarze 796: }
797:
1.138 schwarze 798: /* --- syntax tree state data management ---------------------------------- */
799:
1.137 schwarze 800: static void
801: roff_man_free1(struct roff_man *man)
802: {
803:
1.138 schwarze 804: if (man->first != NULL)
805: roff_node_delete(man, man->first);
1.137 schwarze 806: free(man->meta.msec);
807: free(man->meta.vol);
808: free(man->meta.os);
809: free(man->meta.arch);
810: free(man->meta.title);
811: free(man->meta.name);
812: free(man->meta.date);
813: }
814:
815: static void
816: roff_man_alloc1(struct roff_man *man)
817: {
818:
819: memset(&man->meta, 0, sizeof(man->meta));
820: man->first = mandoc_calloc(1, sizeof(*man->first));
821: man->first->type = ROFFT_ROOT;
822: man->last = man->first;
823: man->last_es = NULL;
824: man->flags = 0;
825: man->macroset = MACROSET_NONE;
826: man->lastsec = man->lastnamed = SEC_NONE;
827: man->next = ROFF_NEXT_CHILD;
828: }
829:
830: void
831: roff_man_reset(struct roff_man *man)
832: {
833:
834: roff_man_free1(man);
835: roff_man_alloc1(man);
836: }
837:
838: void
839: roff_man_free(struct roff_man *man)
840: {
841:
842: roff_man_free1(man);
843: free(man);
844: }
845:
846: struct roff_man *
847: roff_man_alloc(struct roff *roff, struct mparse *parse,
848: const char *defos, int quick)
849: {
850: struct roff_man *man;
851:
852: man = mandoc_calloc(1, sizeof(*man));
853: man->parse = parse;
854: man->roff = roff;
855: man->defos = defos;
856: man->quick = quick;
857: roff_man_alloc1(man);
1.168 schwarze 858: roff->man = man;
1.149 schwarze 859: return man;
1.1 schwarze 860: }
861:
1.138 schwarze 862: /* --- syntax tree handling ----------------------------------------------- */
863:
864: struct roff_node *
865: roff_node_alloc(struct roff_man *man, int line, int pos,
866: enum roff_type type, int tok)
867: {
868: struct roff_node *n;
869:
870: n = mandoc_calloc(1, sizeof(*n));
871: n->line = line;
872: n->pos = pos;
873: n->tok = tok;
874: n->type = type;
875: n->sec = man->lastsec;
876:
877: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 878: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 879: else
1.157 schwarze 880: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 881: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 882: n->flags |= NODE_LINE;
1.138 schwarze 883: man->flags &= ~MDOC_NEWLINE;
884:
1.149 schwarze 885: return n;
1.138 schwarze 886: }
887:
888: void
889: roff_node_append(struct roff_man *man, struct roff_node *n)
890: {
891:
892: switch (man->next) {
893: case ROFF_NEXT_SIBLING:
1.153 schwarze 894: if (man->last->next != NULL) {
895: n->next = man->last->next;
896: man->last->next->prev = n;
897: } else
898: man->last->parent->last = n;
1.138 schwarze 899: man->last->next = n;
900: n->prev = man->last;
901: n->parent = man->last->parent;
902: break;
903: case ROFF_NEXT_CHILD:
1.159 schwarze 904: if (man->last->child != NULL) {
905: n->next = man->last->child;
906: man->last->child->prev = n;
907: } else
908: man->last->last = n;
1.138 schwarze 909: man->last->child = n;
910: n->parent = man->last;
911: break;
912: default:
913: abort();
914: }
1.154 schwarze 915: man->last = n;
1.138 schwarze 916:
917: switch (n->type) {
918: case ROFFT_HEAD:
919: n->parent->head = n;
920: break;
921: case ROFFT_BODY:
1.154 schwarze 922: if (n->end != ENDBODY_NOT)
923: return;
1.138 schwarze 924: n->parent->body = n;
925: break;
926: case ROFFT_TAIL:
927: n->parent->tail = n;
928: break;
929: default:
1.154 schwarze 930: return;
1.138 schwarze 931: }
1.154 schwarze 932:
933: /*
934: * Copy over the normalised-data pointer of our parent. Not
935: * everybody has one, but copying a null pointer is fine.
936: */
937:
938: n->norm = n->parent->norm;
939: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 940: }
941:
1.139 schwarze 942: void
943: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
944: {
945: struct roff_node *n;
946:
947: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
948: n->string = roff_strdup(man->roff, word);
949: roff_node_append(man, n);
1.158 schwarze 950: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 951: man->next = ROFF_NEXT_SIBLING;
952: }
953:
954: void
955: roff_word_append(struct roff_man *man, const char *word)
956: {
957: struct roff_node *n;
958: char *addstr, *newstr;
959:
960: n = man->last;
961: addstr = roff_strdup(man->roff, word);
962: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
963: free(addstr);
964: free(n->string);
965: n->string = newstr;
966: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 967: }
968:
969: void
970: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
971: {
972: struct roff_node *n;
973:
974: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
975: roff_node_append(man, n);
976: man->next = ROFF_NEXT_CHILD;
977: }
978:
979: struct roff_node *
980: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
981: {
982: struct roff_node *n;
983:
984: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
985: roff_node_append(man, n);
986: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 987: return n;
1.139 schwarze 988: }
989:
1.138 schwarze 990: struct roff_node *
991: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
992: {
993: struct roff_node *n;
994:
995: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
996: roff_node_append(man, n);
997: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 998: return n;
1.138 schwarze 999: }
1000:
1001: struct roff_node *
1002: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1003: {
1004: struct roff_node *n;
1005:
1006: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1007: roff_node_append(man, n);
1008: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1009: return n;
1.139 schwarze 1010: }
1011:
1012: void
1013: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1014: {
1015: struct roff_node *n;
1016:
1017: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1018: n->eqn = eqn;
1019: if (eqn->ln > man->last->line)
1.157 schwarze 1020: n->flags |= NODE_LINE;
1.139 schwarze 1021: roff_node_append(man, n);
1022: man->next = ROFF_NEXT_SIBLING;
1023: }
1024:
1025: void
1026: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1027: {
1028: struct roff_node *n;
1029:
1030: if (man->macroset == MACROSET_MAN)
1.174 schwarze 1031: man_breakscope(man, ROFF_TS);
1.139 schwarze 1032: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1033: n->span = tbl;
1034: roff_node_append(man, n);
1.158 schwarze 1035: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 1036: man->next = ROFF_NEXT_SIBLING;
1.138 schwarze 1037: }
1038:
1039: void
1040: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1041: {
1042:
1043: /* Adjust siblings. */
1044:
1045: if (n->prev)
1046: n->prev->next = n->next;
1047: if (n->next)
1048: n->next->prev = n->prev;
1049:
1050: /* Adjust parent. */
1051:
1052: if (n->parent != NULL) {
1053: if (n->parent->child == n)
1054: n->parent->child = n->next;
1055: if (n->parent->last == n)
1056: n->parent->last = n->prev;
1057: }
1058:
1059: /* Adjust parse point. */
1060:
1061: if (man == NULL)
1062: return;
1063: if (man->last == n) {
1064: if (n->prev == NULL) {
1065: man->last = n->parent;
1066: man->next = ROFF_NEXT_CHILD;
1067: } else {
1068: man->last = n->prev;
1069: man->next = ROFF_NEXT_SIBLING;
1070: }
1071: }
1072: if (man->first == n)
1073: man->first = NULL;
1074: }
1075:
1076: void
1077: roff_node_free(struct roff_node *n)
1078: {
1079:
1080: if (n->args != NULL)
1081: mdoc_argv_free(n->args);
1082: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1083: free(n->norm);
1084: free(n->string);
1085: free(n);
1086: }
1087:
1088: void
1089: roff_node_delete(struct roff_man *man, struct roff_node *n)
1090: {
1091:
1092: while (n->child != NULL)
1093: roff_node_delete(man, n->child);
1094: roff_node_unlink(man, n);
1095: roff_node_free(n);
1.141 schwarze 1096: }
1097:
1098: void
1099: deroff(char **dest, const struct roff_node *n)
1100: {
1101: char *cp;
1102: size_t sz;
1103:
1104: if (n->type != ROFFT_TEXT) {
1105: for (n = n->child; n != NULL; n = n->next)
1106: deroff(dest, n);
1107: return;
1108: }
1109:
1.160 schwarze 1110: /* Skip leading whitespace. */
1.141 schwarze 1111:
1.160 schwarze 1112: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1113: if (cp[0] == '\\' && cp[1] != '\0' &&
1114: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1115: cp++;
1.160 schwarze 1116: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1117: break;
1118: }
1119:
1.161 schwarze 1120: /* Skip trailing backslash. */
1121:
1122: sz = strlen(cp);
1.162 schwarze 1123: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1124: sz--;
1125:
1.141 schwarze 1126: /* Skip trailing whitespace. */
1127:
1.161 schwarze 1128: for (; sz; sz--)
1.141 schwarze 1129: if ( ! isspace((unsigned char)cp[sz-1]))
1130: break;
1131:
1132: /* Skip empty strings. */
1133:
1134: if (sz == 0)
1135: return;
1136:
1137: if (*dest == NULL) {
1138: *dest = mandoc_strndup(cp, sz);
1139: return;
1140: }
1141:
1142: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1143: free(*dest);
1144: *dest = cp;
1.138 schwarze 1145: }
1146:
1147: /* --- main functions of the roff parser ---------------------------------- */
1148:
1.8 schwarze 1149: /*
1.79 schwarze 1150: * In the current line, expand escape sequences that tend to get
1151: * used in numerical expressions and conditional requests.
1152: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1153: */
1.45 schwarze 1154: static enum rofferr
1.110 schwarze 1155: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1156: {
1.81 schwarze 1157: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1158: const char *start; /* start of the string to process */
1.82 schwarze 1159: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1160: const char *stnam; /* start of the name, after "[(*" */
1161: const char *cp; /* end of the name, e.g. before ']' */
1162: const char *res; /* the string to be substituted */
1.110 schwarze 1163: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1164: size_t maxl; /* expected length of the escape name */
1165: size_t naml; /* actual length of the escape name */
1.109 schwarze 1166: enum mandoc_esc esc; /* type of the escape sequence */
1167: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1168: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1169: int npos; /* position in numeric expression */
1.91 schwarze 1170: int arg_complete; /* argument not interrupted by eol */
1.175 schwarze 1171: int done; /* no more input available */
1.79 schwarze 1172: char term; /* character terminating the escape */
1.8 schwarze 1173:
1.175 schwarze 1174: /* Search forward for comments. */
1175:
1176: done = 0;
1177: start = buf->buf + pos;
1178: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1179: if (stesc[0] != r->escape || stesc[1] == '\0')
1180: continue;
1181: stesc++;
1182: if (*stesc != '"' && *stesc != '#')
1183: continue;
1184: cp = strchr(stesc--, '\0') - 1;
1185: if (*cp == '\n') {
1186: done = 1;
1187: cp--;
1188: }
1189: if (*cp == ' ' || *cp == '\t')
1190: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1191: ln, cp - buf->buf, NULL);
1192: while (stesc > start && stesc[-1] == ' ')
1193: stesc--;
1194: *stesc = '\0';
1195: break;
1196: }
1197: if (stesc == start)
1198: return ROFF_CONT;
1199: stesc--;
1200:
1201: /* Notice the end of the input. */
1202:
1203: if (*stesc == '\n') {
1204: *stesc-- = '\0';
1205: done = 1;
1206: }
1207:
1.43 schwarze 1208: expand_count = 0;
1.175 schwarze 1209: while (stesc >= start) {
1.43 schwarze 1210:
1.78 schwarze 1211: /* Search backwards for the next backslash. */
1212:
1.175 schwarze 1213: if (*stesc != r->escape) {
1214: if (*stesc == '\\') {
1215: *stesc = '\0';
1216: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1217: buf->buf, stesc + 1) + 1;
1218: start = nbuf + pos;
1219: stesc = nbuf + (stesc - buf->buf);
1220: free(buf->buf);
1221: buf->buf = nbuf;
1222: }
1223: stesc--;
1.78 schwarze 1224: continue;
1.175 schwarze 1225: }
1.78 schwarze 1226:
1227: /* If it is escaped, skip it. */
1228:
1229: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1230: if (*cp != r->escape)
1.78 schwarze 1231: break;
1232:
1.110 schwarze 1233: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1234: while (stesc > cp)
1235: *stesc-- = '\\';
1.78 schwarze 1236: continue;
1.175 schwarze 1237: } else if (stesc[1] != '\0') {
1238: *stesc = '\\';
1239: } else {
1240: *stesc-- = '\0';
1241: if (done)
1242: continue;
1243: else
1244: return ROFF_APPEND;
1.78 schwarze 1245: }
1.23 schwarze 1246:
1.79 schwarze 1247: /* Decide whether to expand or to check only. */
1.23 schwarze 1248:
1.79 schwarze 1249: term = '\0';
1.78 schwarze 1250: cp = stesc + 1;
1.53 schwarze 1251: switch (*cp) {
1.80 schwarze 1252: case '*':
1.53 schwarze 1253: res = NULL;
1254: break;
1.80 schwarze 1255: case 'B':
1256: case 'w':
1.79 schwarze 1257: term = cp[1];
1258: /* FALLTHROUGH */
1.80 schwarze 1259: case 'n':
1.53 schwarze 1260: res = ubuf;
1261: break;
1262: default:
1.109 schwarze 1263: esc = mandoc_escape(&cp, &stnam, &inaml);
1264: if (esc == ESCAPE_ERROR ||
1265: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1266: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1267: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1268: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1269: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1270: stesc--;
1.78 schwarze 1271: continue;
1.42 schwarze 1272: }
1273:
1.78 schwarze 1274: if (EXPAND_LIMIT < ++expand_count) {
1275: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1276: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1277: return ROFF_IGN;
1.78 schwarze 1278: }
1.23 schwarze 1279:
1280: /*
1281: * The third character decides the length
1.53 schwarze 1282: * of the name of the string or register.
1.23 schwarze 1283: * Save a pointer to the name.
1284: */
1285:
1.110 schwarze 1286: if (term == '\0') {
1.79 schwarze 1287: switch (*++cp) {
1.80 schwarze 1288: case '\0':
1.79 schwarze 1289: maxl = 0;
1290: break;
1.80 schwarze 1291: case '(':
1.79 schwarze 1292: cp++;
1293: maxl = 2;
1294: break;
1.80 schwarze 1295: case '[':
1.79 schwarze 1296: cp++;
1297: term = ']';
1298: maxl = 0;
1299: break;
1300: default:
1301: maxl = 1;
1302: break;
1303: }
1304: } else {
1305: cp += 2;
1.8 schwarze 1306: maxl = 0;
1307: }
1.23 schwarze 1308: stnam = cp;
1.8 schwarze 1309:
1.23 schwarze 1310: /* Advance to the end of the name. */
1.8 schwarze 1311:
1.125 schwarze 1312: naml = 0;
1.91 schwarze 1313: arg_complete = 1;
1.125 schwarze 1314: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1315: if (*cp == '\0') {
1.92 schwarze 1316: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1317: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1318: arg_complete = 0;
1.79 schwarze 1319: break;
1.42 schwarze 1320: }
1.110 schwarze 1321: if (maxl == 0 && *cp == term) {
1.79 schwarze 1322: cp++;
1.125 schwarze 1323: break;
1324: }
1325: if (*cp++ != '\\' || stesc[1] != 'w') {
1326: naml++;
1327: continue;
1328: }
1329: switch (mandoc_escape(&cp, NULL, NULL)) {
1330: case ESCAPE_SPECIAL:
1331: case ESCAPE_UNICODE:
1332: case ESCAPE_NUMBERED:
1333: case ESCAPE_OVERSTRIKE:
1334: naml++;
1335: break;
1336: default:
1.8 schwarze 1337: break;
1.79 schwarze 1338: }
1.8 schwarze 1339: }
1340:
1.23 schwarze 1341: /*
1342: * Retrieve the replacement string; if it is
1343: * undefined, resume searching for escapes.
1344: */
1345:
1.79 schwarze 1346: switch (stesc[1]) {
1.80 schwarze 1347: case '*':
1.91 schwarze 1348: if (arg_complete)
1349: res = roff_getstrn(r, stnam, naml);
1.79 schwarze 1350: break;
1.80 schwarze 1351: case 'B':
1.79 schwarze 1352: npos = 0;
1.91 schwarze 1353: ubuf[0] = arg_complete &&
1.133 schwarze 1354: roff_evalnum(r, ln, stnam, &npos,
1355: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1356: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1357: ubuf[1] = '\0';
1358: break;
1.80 schwarze 1359: case 'n':
1.91 schwarze 1360: if (arg_complete)
1361: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1362: roff_getregn(r, stnam, naml));
1363: else
1364: ubuf[0] = '\0';
1.79 schwarze 1365: break;
1.80 schwarze 1366: case 'w':
1.91 schwarze 1367: /* use even incomplete args */
1.81 schwarze 1368: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1369: 24 * (int)naml);
1370: break;
1371: }
1.8 schwarze 1372:
1.110 schwarze 1373: if (res == NULL) {
1.92 schwarze 1374: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1375: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1376: "%.*s", (int)naml, stnam);
1.37 schwarze 1377: res = "";
1.118 schwarze 1378: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1379: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1380: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1381: return ROFF_IGN;
1.8 schwarze 1382: }
1383:
1.23 schwarze 1384: /* Replace the escape sequence by the string. */
1385:
1.82 schwarze 1386: *stesc = '\0';
1.110 schwarze 1387: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1388: buf->buf, res, cp) + 1;
1.8 schwarze 1389:
1.78 schwarze 1390: /* Prepare for the next replacement. */
1.8 schwarze 1391:
1.78 schwarze 1392: start = nbuf + pos;
1.110 schwarze 1393: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1394: free(buf->buf);
1395: buf->buf = nbuf;
1.42 schwarze 1396: }
1.149 schwarze 1397: return ROFF_CONT;
1.42 schwarze 1398: }
1399:
1400: /*
1.147 schwarze 1401: * Process text streams.
1.42 schwarze 1402: */
1403: static enum rofferr
1.177 schwarze 1404: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1405: {
1406: size_t sz;
1407: const char *start;
1.51 schwarze 1408: char *p;
1409: int isz;
1.42 schwarze 1410: enum mandoc_esc esc;
1411:
1.147 schwarze 1412: /* Spring the input line trap. */
1413:
1414: if (roffit_lines == 1) {
1415: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1416: free(buf->buf);
1417: buf->buf = p;
1418: buf->sz = isz + 1;
1419: *offs = 0;
1420: free(roffit_macro);
1421: roffit_lines = 0;
1.149 schwarze 1422: return ROFF_REPARSE;
1.147 schwarze 1423: } else if (roffit_lines > 1)
1424: --roffit_lines;
1425:
1.177 schwarze 1426: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1427: if (roffce_lines < 1) {
1428: r->man->last = roffce_node;
1429: r->man->next = ROFF_NEXT_SIBLING;
1430: roffce_lines = 0;
1431: roffce_node = NULL;
1432: } else
1433: roffce_lines--;
1434: }
1435:
1.147 schwarze 1436: /* Convert all breakable hyphens into ASCII_HYPH. */
1437:
1.110 schwarze 1438: start = p = buf->buf + pos;
1.42 schwarze 1439:
1.110 schwarze 1440: while (*p != '\0') {
1.42 schwarze 1441: sz = strcspn(p, "-\\");
1442: p += sz;
1443:
1.110 schwarze 1444: if (*p == '\0')
1.42 schwarze 1445: break;
1446:
1.110 schwarze 1447: if (*p == '\\') {
1.42 schwarze 1448: /* Skip over escapes. */
1449: p++;
1.62 schwarze 1450: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1451: if (esc == ESCAPE_ERROR)
1.42 schwarze 1452: break;
1.136 schwarze 1453: while (*p == '-')
1454: p++;
1.42 schwarze 1455: continue;
1456: } else if (p == start) {
1457: p++;
1458: continue;
1459: }
1460:
1.44 schwarze 1461: if (isalpha((unsigned char)p[-1]) &&
1462: isalpha((unsigned char)p[1]))
1.42 schwarze 1463: *p = ASCII_HYPH;
1464: p++;
1.8 schwarze 1465: }
1.149 schwarze 1466: return ROFF_CONT;
1.8 schwarze 1467: }
1468:
1.1 schwarze 1469: enum rofferr
1.110 schwarze 1470: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1471: {
1.166 schwarze 1472: enum roff_tok t;
1.27 schwarze 1473: enum rofferr e;
1.110 schwarze 1474: int pos; /* parse point */
1.115 schwarze 1475: int spos; /* saved parse point for messages */
1.110 schwarze 1476: int ppos; /* original offset in buf->buf */
1477: int ctl; /* macro line (boolean) */
1478:
1479: ppos = pos = *offs;
1.1 schwarze 1480:
1.102 schwarze 1481: /* Handle in-line equation delimiters. */
1482:
1.108 schwarze 1483: if (r->tbl == NULL &&
1484: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1485: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1486: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1487: if (e == ROFF_REPARSE)
1.149 schwarze 1488: return e;
1.102 schwarze 1489: assert(e == ROFF_CONT);
1490: }
1491:
1492: /* Expand some escape sequences. */
1.8 schwarze 1493:
1.110 schwarze 1494: e = roff_res(r, buf, ln, pos);
1.175 schwarze 1495: if (e == ROFF_IGN || e == ROFF_APPEND)
1.149 schwarze 1496: return e;
1.110 schwarze 1497: assert(e == ROFF_CONT);
1.8 schwarze 1498:
1.110 schwarze 1499: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1500:
1.8 schwarze 1501: /*
1.2 schwarze 1502: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1503: * text through the macro's filter.
1504: * Equations process all content themselves.
1505: * Tables process almost all content themselves, but we want
1506: * to warn about macros before passing it there.
1.2 schwarze 1507: */
1508:
1.124 schwarze 1509: if (r->last != NULL && ! ctl) {
1.2 schwarze 1510: t = r->last->tok;
1.110 schwarze 1511: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.166 schwarze 1512: if (e == ROFF_IGN)
1.149 schwarze 1513: return e;
1.166 schwarze 1514: assert(e == ROFF_CONT);
1.54 schwarze 1515: }
1.124 schwarze 1516: if (r->eqn != NULL)
1.149 schwarze 1517: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.124 schwarze 1518: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.149 schwarze 1519: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.124 schwarze 1520: if ( ! ctl)
1.177 schwarze 1521: return roff_parsetext(r, buf, pos, offs);
1.100 schwarze 1522:
1523: /* Skip empty request lines. */
1524:
1.110 schwarze 1525: if (buf->buf[pos] == '"') {
1.100 schwarze 1526: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1527: ln, pos, NULL);
1.149 schwarze 1528: return ROFF_IGN;
1.110 schwarze 1529: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1530: return ROFF_IGN;
1.2 schwarze 1531:
1532: /*
1533: * If a scope is open, go to the child handler for that macro,
1534: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1535: * Don't do so if an equation is open.
1.2 schwarze 1536: */
1537:
1538: if (r->last) {
1.1 schwarze 1539: t = r->last->tok;
1.149 schwarze 1540: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1541: }
1542:
1.115 schwarze 1543: /* No scope is open. This is a new request or macro. */
1544:
1545: spos = pos;
1546: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1547:
1548: /* Tables ignore most macros. */
1549:
1.180 schwarze 1550: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1551: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.115 schwarze 1552: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1553: ln, pos, buf->buf + spos);
1.180 schwarze 1554: if (t != TOKEN_NONE)
1.149 schwarze 1555: return ROFF_IGN;
1.129 schwarze 1556: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1557: pos++;
1.163 schwarze 1558: while (buf->buf[pos] == ' ')
1.129 schwarze 1559: pos++;
1.149 schwarze 1560: return tbl_read(r->tbl, ln, buf->buf, pos);
1.115 schwarze 1561: }
1562:
1.177 schwarze 1563: /* For now, let high level macros abort .ce mode. */
1564:
1565: if (ctl && roffce_node != NULL &&
1566: (t == TOKEN_NONE || t == ROFF_EQ || t == ROFF_TS)) {
1567: r->man->last = roffce_node;
1568: r->man->next = ROFF_NEXT_SIBLING;
1569: roffce_lines = 0;
1570: roffce_node = NULL;
1571: }
1572:
1.2 schwarze 1573: /*
1.115 schwarze 1574: * This is neither a roff request nor a user-defined macro.
1575: * Let the standard macro set parsers handle it.
1.2 schwarze 1576: */
1577:
1.166 schwarze 1578: if (t == TOKEN_NONE)
1.149 schwarze 1579: return ROFF_CONT;
1.115 schwarze 1580:
1581: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1582:
1.168 schwarze 1583: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1584: }
1585:
1.27 schwarze 1586: void
1.2 schwarze 1587: roff_endparse(struct roff *r)
1588: {
1.1 schwarze 1589:
1.27 schwarze 1590: if (r->last)
1.94 schwarze 1591: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1592: r->last->line, r->last->col,
1.167 schwarze 1593: roff_name[r->last->tok]);
1.27 schwarze 1594:
1.32 schwarze 1595: if (r->eqn) {
1.94 schwarze 1596: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1597: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1598: eqn_end(&r->eqn);
1.32 schwarze 1599: }
1600:
1.27 schwarze 1601: if (r->tbl) {
1.94 schwarze 1602: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1603: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1604: tbl_end(&r->tbl);
1.27 schwarze 1605: }
1.1 schwarze 1606: }
1607:
1608: /*
1609: * Parse a roff node's type from the input buffer. This must be in the
1610: * form of ".foo xxx" in the usual way.
1611: */
1.166 schwarze 1612: static enum roff_tok
1.87 schwarze 1613: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1614: {
1.87 schwarze 1615: char *cp;
1.16 schwarze 1616: const char *mac;
1617: size_t maclen;
1.166 schwarze 1618: enum roff_tok t;
1.1 schwarze 1619:
1.87 schwarze 1620: cp = buf + *pos;
1621:
1622: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1623: return TOKEN_NONE;
1.1 schwarze 1624:
1.87 schwarze 1625: mac = cp;
1626: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1627:
1.178 schwarze 1628: t = (r->current_string = roff_getstrn(r, mac, maclen)) ?
1629: ROFF_USERDEF :
1630: (r->current_string = roff_getrenn(r, mac, maclen)) ?
1631: ROFF_RENAMED : roffhash_find(r->reqtab, mac, maclen);
1.1 schwarze 1632:
1.166 schwarze 1633: if (t != TOKEN_NONE)
1.87 schwarze 1634: *pos = cp - buf;
1.1 schwarze 1635:
1.149 schwarze 1636: return t;
1.1 schwarze 1637: }
1638:
1.138 schwarze 1639: /* --- handling of request blocks ----------------------------------------- */
1640:
1.1 schwarze 1641: static enum rofferr
1.2 schwarze 1642: roff_cblock(ROFF_ARGS)
1.1 schwarze 1643: {
1644:
1.2 schwarze 1645: /*
1646: * A block-close `..' should only be invoked as a child of an
1647: * ignore macro, otherwise raise a warning and just ignore it.
1648: */
1649:
1.110 schwarze 1650: if (r->last == NULL) {
1.94 schwarze 1651: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1652: ln, ppos, "..");
1.149 schwarze 1653: return ROFF_IGN;
1.2 schwarze 1654: }
1.1 schwarze 1655:
1.2 schwarze 1656: switch (r->last->tok) {
1.80 schwarze 1657: case ROFF_am:
1.93 schwarze 1658: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1659: case ROFF_ami:
1660: case ROFF_de:
1.23 schwarze 1661: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1662: case ROFF_dei:
1663: case ROFF_ig:
1.2 schwarze 1664: break;
1665: default:
1.94 schwarze 1666: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1667: ln, ppos, "..");
1.149 schwarze 1668: return ROFF_IGN;
1.2 schwarze 1669: }
1670:
1.110 schwarze 1671: if (buf->buf[pos] != '\0')
1.90 schwarze 1672: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1673: ".. %s", buf->buf + pos);
1.2 schwarze 1674:
1675: roffnode_pop(r);
1676: roffnode_cleanscope(r);
1.149 schwarze 1677: return ROFF_IGN;
1.2 schwarze 1678:
1679: }
1.1 schwarze 1680:
1.2 schwarze 1681: static void
1682: roffnode_cleanscope(struct roff *r)
1683: {
1.1 schwarze 1684:
1.2 schwarze 1685: while (r->last) {
1.46 schwarze 1686: if (--r->last->endspan != 0)
1.2 schwarze 1687: break;
1688: roffnode_pop(r);
1689: }
1690: }
1.1 schwarze 1691:
1.68 schwarze 1692: static void
1693: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1694: {
1.1 schwarze 1695:
1.2 schwarze 1696: if (NULL == r->last) {
1.94 schwarze 1697: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1698: ln, ppos, "\\}");
1.68 schwarze 1699: return;
1.2 schwarze 1700: }
1.1 schwarze 1701:
1.2 schwarze 1702: switch (r->last->tok) {
1.80 schwarze 1703: case ROFF_el:
1704: case ROFF_ie:
1705: case ROFF_if:
1.2 schwarze 1706: break;
1707: default:
1.94 schwarze 1708: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1709: ln, ppos, "\\}");
1.68 schwarze 1710: return;
1.2 schwarze 1711: }
1.1 schwarze 1712:
1.2 schwarze 1713: if (r->last->endspan > -1) {
1.94 schwarze 1714: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1715: ln, ppos, "\\}");
1.68 schwarze 1716: return;
1.2 schwarze 1717: }
1718:
1719: roffnode_pop(r);
1720: roffnode_cleanscope(r);
1.68 schwarze 1721: return;
1.1 schwarze 1722: }
1723:
1724: static enum rofferr
1.2 schwarze 1725: roff_block(ROFF_ARGS)
1.1 schwarze 1726: {
1.93 schwarze 1727: const char *name;
1728: char *iname, *cp;
1.86 schwarze 1729: size_t namesz;
1.16 schwarze 1730:
1.93 schwarze 1731: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1732:
1.110 schwarze 1733: if (tok == ROFF_de1)
1.93 schwarze 1734: tok = ROFF_de;
1.123 schwarze 1735: else if (tok == ROFF_dei1)
1736: tok = ROFF_dei;
1.110 schwarze 1737: else if (tok == ROFF_am1)
1.93 schwarze 1738: tok = ROFF_am;
1.123 schwarze 1739: else if (tok == ROFF_ami1)
1740: tok = ROFF_ami;
1.93 schwarze 1741:
1742: /* Parse the macro name argument. */
1743:
1.110 schwarze 1744: cp = buf->buf + pos;
1745: if (tok == ROFF_ig) {
1.93 schwarze 1746: iname = NULL;
1747: namesz = 0;
1748: } else {
1749: iname = cp;
1750: namesz = roff_getname(r, &cp, ln, ppos);
1751: iname[namesz] = '\0';
1752: }
1.22 schwarze 1753:
1.93 schwarze 1754: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1755:
1.110 schwarze 1756: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1757: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1758: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1759: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1760: "%.*s", (int)namesz, iname);
1761: namesz = 0;
1762: } else
1763: namesz = strlen(name);
1764: } else
1765: name = iname;
1.22 schwarze 1766:
1.110 schwarze 1767: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1768: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1769: ln, ppos, roff_name[tok]);
1.149 schwarze 1770: return ROFF_IGN;
1.93 schwarze 1771: }
1.2 schwarze 1772:
1.16 schwarze 1773: roffnode_push(r, tok, name, ln, ppos);
1774:
1775: /*
1776: * At the beginning of a `de' macro, clear the existing string
1777: * with the same name, if there is one. New content will be
1.66 schwarze 1778: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1779: */
1.22 schwarze 1780:
1.183 schwarze 1781: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 1782: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 1783: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1784: }
1.2 schwarze 1785:
1.110 schwarze 1786: if (*cp == '\0')
1.149 schwarze 1787: return ROFF_IGN;
1.1 schwarze 1788:
1.93 schwarze 1789: /* Get the custom end marker. */
1.22 schwarze 1790:
1.93 schwarze 1791: iname = cp;
1.86 schwarze 1792: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1793:
1794: /* Resolve the end marker if it is indirect. */
1795:
1.110 schwarze 1796: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1797: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1798: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1799: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1800: "%.*s", (int)namesz, iname);
1801: namesz = 0;
1802: } else
1803: namesz = strlen(name);
1804: } else
1805: name = iname;
1806:
1.86 schwarze 1807: if (namesz)
1808: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1809:
1.110 schwarze 1810: if (*cp != '\0')
1.90 schwarze 1811: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 1812: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 1813:
1.149 schwarze 1814: return ROFF_IGN;
1.1 schwarze 1815: }
1816:
1817: static enum rofferr
1.2 schwarze 1818: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1819: {
1.166 schwarze 1820: enum roff_tok t;
1.2 schwarze 1821: int i, j;
1822:
1823: /*
1824: * First check whether a custom macro exists at this level. If
1825: * it does, then check against it. This is some of groff's
1826: * stranger behaviours. If we encountered a custom end-scope
1827: * tag and that tag also happens to be a "real" macro, then we
1828: * need to try interpreting it again as a real macro. If it's
1829: * not, then return ignore. Else continue.
1830: */
1831:
1832: if (r->last->end) {
1.35 schwarze 1833: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1834: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1835: break;
1.1 schwarze 1836:
1.110 schwarze 1837: if (r->last->end[j] == '\0' &&
1838: (buf->buf[i] == '\0' ||
1839: buf->buf[i] == ' ' ||
1840: buf->buf[i] == '\t')) {
1.2 schwarze 1841: roffnode_pop(r);
1842: roffnode_cleanscope(r);
1.1 schwarze 1843:
1.110 schwarze 1844: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1845: i++;
1846:
1847: pos = i;
1.110 schwarze 1848: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 1849: TOKEN_NONE)
1.149 schwarze 1850: return ROFF_RERUN;
1851: return ROFF_IGN;
1.2 schwarze 1852: }
1.1 schwarze 1853: }
1854:
1.2 schwarze 1855: /*
1856: * If we have no custom end-query or lookup failed, then try
1857: * pulling it out of the hashtable.
1858: */
1.1 schwarze 1859:
1.110 schwarze 1860: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1861:
1.110 schwarze 1862: if (t != ROFF_cblock) {
1863: if (tok != ROFF_ig)
1864: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1865: return ROFF_IGN;
1.16 schwarze 1866: }
1.1 schwarze 1867:
1.149 schwarze 1868: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1869: }
1870:
1871: static enum rofferr
1872: roff_block_text(ROFF_ARGS)
1873: {
1874:
1.110 schwarze 1875: if (tok != ROFF_ig)
1876: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1877:
1.149 schwarze 1878: return ROFF_IGN;
1.2 schwarze 1879: }
1880:
1881: static enum rofferr
1882: roff_cond_sub(ROFF_ARGS)
1883: {
1.166 schwarze 1884: enum roff_tok t;
1.37 schwarze 1885: char *ep;
1.71 schwarze 1886: int rr;
1.2 schwarze 1887:
1888: rr = r->last->rule;
1.37 schwarze 1889: roffnode_cleanscope(r);
1.110 schwarze 1890: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1891:
1.37 schwarze 1892: /*
1.50 schwarze 1893: * Fully handle known macros when they are structurally
1894: * required or when the conditional evaluated to true.
1.5 schwarze 1895: */
1896:
1.166 schwarze 1897: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.149 schwarze 1898: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.39 schwarze 1899:
1.69 schwarze 1900: /*
1901: * If `\}' occurs on a macro line without a preceding macro,
1902: * drop the line completely.
1903: */
1904:
1.110 schwarze 1905: ep = buf->buf + pos;
1906: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1907: rr = 0;
1.69 schwarze 1908:
1.50 schwarze 1909: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1910:
1.110 schwarze 1911: while ((ep = strchr(ep, '\\')) != NULL) {
1912: if (*(++ep) == '}') {
1.70 schwarze 1913: *ep = '&';
1.110 schwarze 1914: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1915: }
1.119 schwarze 1916: if (*ep != '\0')
1917: ++ep;
1.50 schwarze 1918: }
1.149 schwarze 1919: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1920: }
1921:
1922: static enum rofferr
1923: roff_cond_text(ROFF_ARGS)
1924: {
1.37 schwarze 1925: char *ep;
1.71 schwarze 1926: int rr;
1.2 schwarze 1927:
1928: rr = r->last->rule;
1.37 schwarze 1929: roffnode_cleanscope(r);
1.1 schwarze 1930:
1.110 schwarze 1931: ep = buf->buf + pos;
1932: while ((ep = strchr(ep, '\\')) != NULL) {
1933: if (*(++ep) == '}') {
1.70 schwarze 1934: *ep = '&';
1.110 schwarze 1935: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1936: }
1.119 schwarze 1937: if (*ep != '\0')
1938: ++ep;
1.2 schwarze 1939: }
1.149 schwarze 1940: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1941: }
1942:
1.138 schwarze 1943: /* --- handling of numeric and conditional expressions -------------------- */
1944:
1.77 schwarze 1945: /*
1946: * Parse a single signed integer number. Stop at the first non-digit.
1947: * If there is at least one digit, return success and advance the
1948: * parse point, else return failure and let the parse point unchanged.
1949: * Ignore overflows, treat them just like the C language.
1950: */
1.56 schwarze 1951: static int
1.133 schwarze 1952: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 1953: {
1.133 schwarze 1954: int myres, scaled, n, p;
1.79 schwarze 1955:
1956: if (NULL == res)
1957: res = &myres;
1.56 schwarze 1958:
1959: p = *pos;
1960: n = v[p] == '-';
1.133 schwarze 1961: if (n || v[p] == '+')
1.56 schwarze 1962: p++;
1963:
1.133 schwarze 1964: if (flags & ROFFNUM_WHITE)
1965: while (isspace((unsigned char)v[p]))
1966: p++;
1967:
1.56 schwarze 1968: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 1969: *res = 10 * *res + v[p] - '0';
1.56 schwarze 1970: if (p == *pos + n)
1971: return 0;
1972:
1973: if (n)
1974: *res = -*res;
1975:
1.126 schwarze 1976: /* Each number may be followed by one optional scaling unit. */
1977:
1978: switch (v[p]) {
1979: case 'f':
1.133 schwarze 1980: scaled = *res * 65536;
1.126 schwarze 1981: break;
1982: case 'i':
1.133 schwarze 1983: scaled = *res * 240;
1.126 schwarze 1984: break;
1985: case 'c':
1.133 schwarze 1986: scaled = *res * 240 / 2.54;
1.126 schwarze 1987: break;
1988: case 'v':
1989: case 'P':
1.133 schwarze 1990: scaled = *res * 40;
1.126 schwarze 1991: break;
1992: case 'm':
1993: case 'n':
1.133 schwarze 1994: scaled = *res * 24;
1.126 schwarze 1995: break;
1996: case 'p':
1.133 schwarze 1997: scaled = *res * 10 / 3;
1.126 schwarze 1998: break;
1999: case 'u':
1.133 schwarze 2000: scaled = *res;
1.126 schwarze 2001: break;
2002: case 'M':
1.133 schwarze 2003: scaled = *res * 6 / 25;
1.126 schwarze 2004: break;
2005: default:
1.133 schwarze 2006: scaled = *res;
1.126 schwarze 2007: p--;
2008: break;
2009: }
1.133 schwarze 2010: if (flags & ROFFNUM_SCALE)
2011: *res = scaled;
1.126 schwarze 2012:
2013: *pos = p + 1;
1.149 schwarze 2014: return 1;
1.56 schwarze 2015: }
2016:
1.71 schwarze 2017: /*
2018: * Evaluate a string comparison condition.
2019: * The first character is the delimiter.
2020: * Succeed if the string up to its second occurrence
2021: * matches the string up to its third occurence.
2022: * Advance the cursor after the third occurrence
2023: * or lacking that, to the end of the line.
2024: */
2025: static int
2026: roff_evalstrcond(const char *v, int *pos)
2027: {
2028: const char *s1, *s2, *s3;
2029: int match;
2030:
2031: match = 0;
2032: s1 = v + *pos; /* initial delimiter */
2033: s2 = s1 + 1; /* for scanning the first string */
2034: s3 = strchr(s2, *s1); /* for scanning the second string */
2035:
2036: if (NULL == s3) /* found no middle delimiter */
2037: goto out;
2038:
2039: while ('\0' != *++s3) {
2040: if (*s2 != *s3) { /* mismatch */
2041: s3 = strchr(s3, *s1);
2042: break;
2043: }
2044: if (*s3 == *s1) { /* found the final delimiter */
2045: match = 1;
2046: break;
2047: }
2048: s2++;
2049: }
2050:
2051: out:
2052: if (NULL == s3)
2053: s3 = strchr(s2, '\0');
1.114 schwarze 2054: else if (*s3 != '\0')
1.71 schwarze 2055: s3++;
2056: *pos = s3 - v;
1.149 schwarze 2057: return match;
1.71 schwarze 2058: }
2059:
1.77 schwarze 2060: /*
2061: * Evaluate an optionally negated single character, numerical,
2062: * or string condition.
2063: */
1.71 schwarze 2064: static int
1.143 schwarze 2065: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2066: {
1.143 schwarze 2067: char *cp, *name;
2068: size_t sz;
1.182 schwarze 2069: int number, savepos, istrue, wanttrue;
1.5 schwarze 2070:
1.71 schwarze 2071: if ('!' == v[*pos]) {
2072: wanttrue = 0;
2073: (*pos)++;
2074: } else
2075: wanttrue = 1;
2076:
1.5 schwarze 2077: switch (v[*pos]) {
1.112 schwarze 2078: case '\0':
1.149 schwarze 2079: return 0;
1.80 schwarze 2080: case 'n':
2081: case 'o':
1.5 schwarze 2082: (*pos)++;
1.149 schwarze 2083: return wanttrue;
1.80 schwarze 2084: case 'c':
2085: case 'e':
2086: case 't':
1.111 schwarze 2087: case 'v':
1.5 schwarze 2088: (*pos)++;
1.149 schwarze 2089: return !wanttrue;
1.182 schwarze 2090: case 'd':
1.143 schwarze 2091: case 'r':
1.182 schwarze 2092: cp = v + *pos + 1;
2093: while (*cp == ' ')
2094: cp++;
2095: name = cp;
2096: sz = roff_getname(r, &cp, ln, cp - v);
2097: istrue = sz && (v[*pos] == 'r' ? roff_hasregn(r, name, sz) :
2098: (roff_getstrn(r, name, sz) != NULL ||
2099: roff_getrenn(r, name, sz) != NULL));
1.143 schwarze 2100: *pos = cp - v;
1.182 schwarze 2101: return istrue == wanttrue;
1.5 schwarze 2102: default:
2103: break;
2104: }
2105:
1.113 schwarze 2106: savepos = *pos;
1.133 schwarze 2107: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2108: return (number > 0) == wanttrue;
1.113 schwarze 2109: else if (*pos == savepos)
1.149 schwarze 2110: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2111: else
1.149 schwarze 2112: return 0;
1.5 schwarze 2113: }
2114:
1.2 schwarze 2115: static enum rofferr
1.21 schwarze 2116: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2117: {
1.30 schwarze 2118:
1.149 schwarze 2119: return ROFF_IGN;
1.21 schwarze 2120: }
2121:
2122: static enum rofferr
1.123 schwarze 2123: roff_insec(ROFF_ARGS)
2124: {
2125:
2126: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2127: ln, ppos, roff_name[tok]);
1.149 schwarze 2128: return ROFF_IGN;
1.123 schwarze 2129: }
2130:
2131: static enum rofferr
2132: roff_unsupp(ROFF_ARGS)
2133: {
2134:
2135: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2136: ln, ppos, roff_name[tok]);
1.149 schwarze 2137: return ROFF_IGN;
1.123 schwarze 2138: }
2139:
2140: static enum rofferr
1.2 schwarze 2141: roff_cond(ROFF_ARGS)
2142: {
1.46 schwarze 2143:
2144: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2145:
1.80 schwarze 2146: /*
1.35 schwarze 2147: * An `.el' has no conditional body: it will consume the value
2148: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2149: * defaults to DENY.
1.35 schwarze 2150: *
2151: * If we're not an `el', however, then evaluate the conditional.
2152: */
1.1 schwarze 2153:
1.110 schwarze 2154: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2155: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2156: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2157:
1.35 schwarze 2158: /*
2159: * An if-else will put the NEGATION of the current evaluated
2160: * conditional into the stack of rules.
2161: */
2162:
1.110 schwarze 2163: if (tok == ROFF_ie) {
1.96 schwarze 2164: if (r->rstackpos + 1 == r->rstacksz) {
2165: r->rstacksz += 16;
2166: r->rstack = mandoc_reallocarray(r->rstack,
2167: r->rstacksz, sizeof(int));
1.35 schwarze 2168: }
1.71 schwarze 2169: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2170: }
1.5 schwarze 2171:
2172: /* If the parent has false as its rule, then so do we. */
2173:
1.71 schwarze 2174: if (r->last->parent && !r->last->parent->rule)
2175: r->last->rule = 0;
1.5 schwarze 2176:
2177: /*
1.46 schwarze 2178: * Determine scope.
2179: * If there is nothing on the line after the conditional,
2180: * not even whitespace, use next-line scope.
1.5 schwarze 2181: */
1.2 schwarze 2182:
1.110 schwarze 2183: if (buf->buf[pos] == '\0') {
1.46 schwarze 2184: r->last->endspan = 2;
2185: goto out;
2186: }
2187:
1.110 schwarze 2188: while (buf->buf[pos] == ' ')
1.46 schwarze 2189: pos++;
2190:
2191: /* An opening brace requests multiline scope. */
1.2 schwarze 2192:
1.110 schwarze 2193: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2194: r->last->endspan = -1;
2195: pos += 2;
1.144 schwarze 2196: while (buf->buf[pos] == ' ')
2197: pos++;
1.46 schwarze 2198: goto out;
1.80 schwarze 2199: }
1.2 schwarze 2200:
2201: /*
1.46 schwarze 2202: * Anything else following the conditional causes
2203: * single-line scope. Warn if the scope contains
2204: * nothing but trailing whitespace.
1.2 schwarze 2205: */
2206:
1.110 schwarze 2207: if (buf->buf[pos] == '\0')
1.89 schwarze 2208: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2209: ln, ppos, roff_name[tok]);
1.2 schwarze 2210:
1.46 schwarze 2211: r->last->endspan = 1;
1.1 schwarze 2212:
1.46 schwarze 2213: out:
1.2 schwarze 2214: *offs = pos;
1.149 schwarze 2215: return ROFF_RERUN;
1.1 schwarze 2216: }
2217:
1.2 schwarze 2218: static enum rofferr
1.7 schwarze 2219: roff_ds(ROFF_ARGS)
2220: {
1.85 schwarze 2221: char *string;
2222: const char *name;
2223: size_t namesz;
1.10 schwarze 2224:
1.123 schwarze 2225: /* Ignore groff compatibility mode for now. */
2226:
2227: if (tok == ROFF_ds1)
2228: tok = ROFF_ds;
2229: else if (tok == ROFF_as1)
2230: tok = ROFF_as;
2231:
1.10 schwarze 2232: /*
1.85 schwarze 2233: * The first word is the name of the string.
2234: * If it is empty or terminated by an escape sequence,
2235: * abort the `ds' request without defining anything.
1.10 schwarze 2236: */
1.7 schwarze 2237:
1.110 schwarze 2238: name = string = buf->buf + pos;
2239: if (*name == '\0')
1.149 schwarze 2240: return ROFF_IGN;
1.7 schwarze 2241:
1.85 schwarze 2242: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2243: if (name[namesz] == '\\')
1.149 schwarze 2244: return ROFF_IGN;
1.85 schwarze 2245:
2246: /* Read past the initial double-quote, if any. */
1.110 schwarze 2247: if (*string == '"')
1.7 schwarze 2248: string++;
2249:
1.10 schwarze 2250: /* The rest is the value. */
1.85 schwarze 2251: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2252: ROFF_as == tok);
1.183 schwarze 2253: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2254: return ROFF_IGN;
1.7 schwarze 2255: }
2256:
1.77 schwarze 2257: /*
2258: * Parse a single operator, one or two characters long.
2259: * If the operator is recognized, return success and advance the
2260: * parse point, else return failure and let the parse point unchanged.
2261: */
2262: static int
2263: roff_getop(const char *v, int *pos, char *res)
2264: {
2265:
2266: *res = v[*pos];
2267:
2268: switch (*res) {
1.80 schwarze 2269: case '+':
2270: case '-':
2271: case '*':
2272: case '/':
2273: case '%':
2274: case '&':
2275: case ':':
1.77 schwarze 2276: break;
2277: case '<':
2278: switch (v[*pos + 1]) {
1.80 schwarze 2279: case '=':
1.77 schwarze 2280: *res = 'l';
2281: (*pos)++;
2282: break;
1.80 schwarze 2283: case '>':
1.77 schwarze 2284: *res = '!';
2285: (*pos)++;
2286: break;
1.80 schwarze 2287: case '?':
1.77 schwarze 2288: *res = 'i';
2289: (*pos)++;
2290: break;
2291: default:
2292: break;
2293: }
2294: break;
2295: case '>':
2296: switch (v[*pos + 1]) {
1.80 schwarze 2297: case '=':
1.77 schwarze 2298: *res = 'g';
2299: (*pos)++;
2300: break;
1.80 schwarze 2301: case '?':
1.77 schwarze 2302: *res = 'a';
2303: (*pos)++;
2304: break;
2305: default:
2306: break;
2307: }
2308: break;
2309: case '=':
2310: if ('=' == v[*pos + 1])
2311: (*pos)++;
2312: break;
2313: default:
1.149 schwarze 2314: return 0;
1.77 schwarze 2315: }
2316: (*pos)++;
2317:
1.149 schwarze 2318: return *res;
1.77 schwarze 2319: }
2320:
2321: /*
2322: * Evaluate either a parenthesized numeric expression
2323: * or a single signed integer number.
2324: */
2325: static int
1.106 schwarze 2326: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2327: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2328: {
2329:
2330: if ('(' != v[*pos])
1.149 schwarze 2331: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2332:
2333: (*pos)++;
1.133 schwarze 2334: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2335: return 0;
1.77 schwarze 2336:
1.79 schwarze 2337: /*
2338: * Omission of the closing parenthesis
2339: * is an error in validation mode,
2340: * but ignored in evaluation mode.
2341: */
2342:
1.77 schwarze 2343: if (')' == v[*pos])
2344: (*pos)++;
1.79 schwarze 2345: else if (NULL == res)
1.149 schwarze 2346: return 0;
1.77 schwarze 2347:
1.149 schwarze 2348: return 1;
1.77 schwarze 2349: }
2350:
2351: /*
2352: * Evaluate a complete numeric expression.
2353: * Proceed left to right, there is no concept of precedence.
2354: */
2355: static int
1.106 schwarze 2356: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2357: int *pos, int *res, int flags)
1.77 schwarze 2358: {
2359: int mypos, operand2;
2360: char operator;
2361:
2362: if (NULL == pos) {
2363: mypos = 0;
2364: pos = &mypos;
2365: }
2366:
1.133 schwarze 2367: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2368: while (isspace((unsigned char)v[*pos]))
2369: (*pos)++;
2370:
1.133 schwarze 2371: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2372: return 0;
1.77 schwarze 2373:
2374: while (1) {
1.133 schwarze 2375: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2376: while (isspace((unsigned char)v[*pos]))
2377: (*pos)++;
2378:
2379: if ( ! roff_getop(v, pos, &operator))
2380: break;
2381:
1.133 schwarze 2382: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2383: while (isspace((unsigned char)v[*pos]))
2384: (*pos)++;
2385:
1.133 schwarze 2386: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2387: return 0;
1.77 schwarze 2388:
1.133 schwarze 2389: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2390: while (isspace((unsigned char)v[*pos]))
2391: (*pos)++;
1.79 schwarze 2392:
2393: if (NULL == res)
2394: continue;
1.77 schwarze 2395:
2396: switch (operator) {
1.80 schwarze 2397: case '+':
1.77 schwarze 2398: *res += operand2;
2399: break;
1.80 schwarze 2400: case '-':
1.77 schwarze 2401: *res -= operand2;
2402: break;
1.80 schwarze 2403: case '*':
1.77 schwarze 2404: *res *= operand2;
2405: break;
1.80 schwarze 2406: case '/':
1.116 schwarze 2407: if (operand2 == 0) {
1.106 schwarze 2408: mandoc_msg(MANDOCERR_DIVZERO,
2409: r->parse, ln, *pos, v);
2410: *res = 0;
2411: break;
2412: }
1.77 schwarze 2413: *res /= operand2;
2414: break;
1.80 schwarze 2415: case '%':
1.116 schwarze 2416: if (operand2 == 0) {
2417: mandoc_msg(MANDOCERR_DIVZERO,
2418: r->parse, ln, *pos, v);
2419: *res = 0;
2420: break;
2421: }
1.77 schwarze 2422: *res %= operand2;
2423: break;
1.80 schwarze 2424: case '<':
1.77 schwarze 2425: *res = *res < operand2;
2426: break;
1.80 schwarze 2427: case '>':
1.77 schwarze 2428: *res = *res > operand2;
2429: break;
1.80 schwarze 2430: case 'l':
1.77 schwarze 2431: *res = *res <= operand2;
2432: break;
1.80 schwarze 2433: case 'g':
1.77 schwarze 2434: *res = *res >= operand2;
2435: break;
1.80 schwarze 2436: case '=':
1.77 schwarze 2437: *res = *res == operand2;
2438: break;
1.80 schwarze 2439: case '!':
1.77 schwarze 2440: *res = *res != operand2;
2441: break;
1.80 schwarze 2442: case '&':
1.77 schwarze 2443: *res = *res && operand2;
2444: break;
1.80 schwarze 2445: case ':':
1.77 schwarze 2446: *res = *res || operand2;
2447: break;
1.80 schwarze 2448: case 'i':
1.77 schwarze 2449: if (operand2 < *res)
2450: *res = operand2;
2451: break;
1.80 schwarze 2452: case 'a':
1.77 schwarze 2453: if (operand2 > *res)
2454: *res = operand2;
2455: break;
2456: default:
2457: abort();
2458: }
2459: }
1.149 schwarze 2460: return 1;
1.77 schwarze 2461: }
2462:
1.138 schwarze 2463: /* --- register management ------------------------------------------------ */
2464:
1.52 schwarze 2465: void
1.60 schwarze 2466: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2467: {
1.52 schwarze 2468: struct roffreg *reg;
2469:
2470: /* Search for an existing register with the same name. */
2471: reg = r->regtab;
2472:
2473: while (reg && strcmp(name, reg->key.p))
2474: reg = reg->next;
1.41 schwarze 2475:
1.52 schwarze 2476: if (NULL == reg) {
2477: /* Create a new register. */
2478: reg = mandoc_malloc(sizeof(struct roffreg));
2479: reg->key.p = mandoc_strdup(name);
2480: reg->key.sz = strlen(name);
1.60 schwarze 2481: reg->val = 0;
1.52 schwarze 2482: reg->next = r->regtab;
2483: r->regtab = reg;
2484: }
2485:
1.60 schwarze 2486: if ('+' == sign)
2487: reg->val += val;
2488: else if ('-' == sign)
2489: reg->val -= val;
2490: else
2491: reg->val = val;
1.41 schwarze 2492: }
2493:
1.65 schwarze 2494: /*
2495: * Handle some predefined read-only number registers.
2496: * For now, return -1 if the requested register is not predefined;
2497: * in case a predefined read-only register having the value -1
2498: * were to turn up, another special value would have to be chosen.
2499: */
2500: static int
1.145 schwarze 2501: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2502: {
2503:
2504: switch (*name) {
1.145 schwarze 2505: case '$': /* Number of arguments of the last macro evaluated. */
1.149 schwarze 2506: return r->argc;
1.80 schwarze 2507: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2508: return 0;
1.80 schwarze 2509: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2510: return 1;
1.80 schwarze 2511: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2512: return 24;
1.80 schwarze 2513: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2514: return 0;
1.80 schwarze 2515: case 'T': /* Some output device is always defined. */
1.149 schwarze 2516: return 1;
1.80 schwarze 2517: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2518: return 40;
1.65 schwarze 2519: default:
1.149 schwarze 2520: return -1;
1.65 schwarze 2521: }
2522: }
2523:
1.53 schwarze 2524: int
1.52 schwarze 2525: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2526: {
1.52 schwarze 2527: struct roffreg *reg;
1.65 schwarze 2528: int val;
2529:
2530: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.145 schwarze 2531: val = roff_getregro(r, name + 1);
1.65 schwarze 2532: if (-1 != val)
1.149 schwarze 2533: return val;
1.65 schwarze 2534: }
1.52 schwarze 2535:
2536: for (reg = r->regtab; reg; reg = reg->next)
2537: if (0 == strcmp(name, reg->key.p))
1.149 schwarze 2538: return reg->val;
1.53 schwarze 2539:
1.149 schwarze 2540: return 0;
1.53 schwarze 2541: }
2542:
2543: static int
2544: roff_getregn(const struct roff *r, const char *name, size_t len)
2545: {
2546: struct roffreg *reg;
1.65 schwarze 2547: int val;
2548:
2549: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2550: val = roff_getregro(r, name + 1);
1.65 schwarze 2551: if (-1 != val)
1.149 schwarze 2552: return val;
1.65 schwarze 2553: }
1.53 schwarze 2554:
2555: for (reg = r->regtab; reg; reg = reg->next)
2556: if (len == reg->key.sz &&
2557: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2558: return reg->val;
1.143 schwarze 2559:
1.149 schwarze 2560: return 0;
1.143 schwarze 2561: }
2562:
2563: static int
2564: roff_hasregn(const struct roff *r, const char *name, size_t len)
2565: {
2566: struct roffreg *reg;
2567: int val;
2568:
2569: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2570: val = roff_getregro(r, name + 1);
1.143 schwarze 2571: if (-1 != val)
1.149 schwarze 2572: return 1;
1.143 schwarze 2573: }
2574:
2575: for (reg = r->regtab; reg; reg = reg->next)
2576: if (len == reg->key.sz &&
2577: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2578: return 1;
1.41 schwarze 2579:
1.149 schwarze 2580: return 0;
1.41 schwarze 2581: }
2582:
1.52 schwarze 2583: static void
2584: roff_freereg(struct roffreg *reg)
1.41 schwarze 2585: {
1.52 schwarze 2586: struct roffreg *old_reg;
1.41 schwarze 2587:
1.52 schwarze 2588: while (NULL != reg) {
2589: free(reg->key.p);
2590: old_reg = reg;
2591: reg = reg->next;
2592: free(old_reg);
2593: }
1.41 schwarze 2594: }
1.7 schwarze 2595:
2596: static enum rofferr
1.6 schwarze 2597: roff_nr(ROFF_ARGS)
1.1 schwarze 2598: {
1.85 schwarze 2599: char *key, *val;
2600: size_t keysz;
1.37 schwarze 2601: int iv;
1.60 schwarze 2602: char sign;
1.6 schwarze 2603:
1.110 schwarze 2604: key = val = buf->buf + pos;
2605: if (*key == '\0')
1.149 schwarze 2606: return ROFF_IGN;
1.85 schwarze 2607:
2608: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2609: if (key[keysz] == '\\')
1.149 schwarze 2610: return ROFF_IGN;
1.85 schwarze 2611: key[keysz] = '\0';
1.6 schwarze 2612:
1.60 schwarze 2613: sign = *val;
1.110 schwarze 2614: if (sign == '+' || sign == '-')
1.60 schwarze 2615: val++;
2616:
1.133 schwarze 2617: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2618: roff_setreg(r, key, iv, sign);
1.1 schwarze 2619:
1.149 schwarze 2620: return ROFF_IGN;
1.76 schwarze 2621: }
2622:
2623: static enum rofferr
2624: roff_rr(ROFF_ARGS)
2625: {
2626: struct roffreg *reg, **prev;
1.85 schwarze 2627: char *name, *cp;
2628: size_t namesz;
1.76 schwarze 2629:
1.110 schwarze 2630: name = cp = buf->buf + pos;
2631: if (*name == '\0')
1.149 schwarze 2632: return ROFF_IGN;
1.85 schwarze 2633: namesz = roff_getname(r, &cp, ln, pos);
2634: name[namesz] = '\0';
1.76 schwarze 2635:
2636: prev = &r->regtab;
2637: while (1) {
2638: reg = *prev;
1.110 schwarze 2639: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2640: break;
2641: prev = ®->next;
2642: }
1.110 schwarze 2643: if (reg != NULL) {
1.76 schwarze 2644: *prev = reg->next;
2645: free(reg->key.p);
2646: free(reg);
2647: }
1.149 schwarze 2648: return ROFF_IGN;
1.29 schwarze 2649: }
2650:
1.138 schwarze 2651: /* --- handler functions for roff requests -------------------------------- */
2652:
1.29 schwarze 2653: static enum rofferr
2654: roff_rm(ROFF_ARGS)
2655: {
2656: const char *name;
2657: char *cp;
1.85 schwarze 2658: size_t namesz;
1.29 schwarze 2659:
1.110 schwarze 2660: cp = buf->buf + pos;
2661: while (*cp != '\0') {
1.85 schwarze 2662: name = cp;
1.110 schwarze 2663: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2664: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 2665: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 2666: if (name[namesz] == '\\')
1.85 schwarze 2667: break;
1.29 schwarze 2668: }
1.149 schwarze 2669: return ROFF_IGN;
1.51 schwarze 2670: }
2671:
2672: static enum rofferr
2673: roff_it(ROFF_ARGS)
2674: {
2675: int iv;
2676:
2677: /* Parse the number of lines. */
1.133 schwarze 2678:
2679: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2680: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2681: ln, ppos, buf->buf + 1);
1.149 schwarze 2682: return ROFF_IGN;
1.51 schwarze 2683: }
2684:
1.134 schwarze 2685: while (isspace((unsigned char)buf->buf[pos]))
2686: pos++;
2687:
2688: /*
2689: * Arm the input line trap.
2690: * Special-casing "an-trap" is an ugly workaround to cope
2691: * with DocBook stupidly fiddling with man(7) internals.
2692: */
1.133 schwarze 2693:
1.51 schwarze 2694: roffit_lines = iv;
1.134 schwarze 2695: roffit_macro = mandoc_strdup(iv != 1 ||
2696: strcmp(buf->buf + pos, "an-trap") ?
2697: buf->buf + pos : "br");
1.149 schwarze 2698: return ROFF_IGN;
1.47 schwarze 2699: }
2700:
2701: static enum rofferr
2702: roff_Dd(ROFF_ARGS)
2703: {
2704: const char *const *cp;
2705:
1.99 schwarze 2706: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.47 schwarze 2707: for (cp = __mdoc_reserved; *cp; cp++)
2708: roff_setstr(r, *cp, NULL, 0);
2709:
1.99 schwarze 2710: if (r->format == 0)
2711: r->format = MPARSE_MDOC;
2712:
1.149 schwarze 2713: return ROFF_CONT;
1.47 schwarze 2714: }
2715:
2716: static enum rofferr
2717: roff_TH(ROFF_ARGS)
2718: {
2719: const char *const *cp;
2720:
1.99 schwarze 2721: if ((r->options & MPARSE_QUICK) == 0)
1.47 schwarze 2722: for (cp = __man_reserved; *cp; cp++)
2723: roff_setstr(r, *cp, NULL, 0);
2724:
1.99 schwarze 2725: if (r->format == 0)
2726: r->format = MPARSE_MAN;
2727:
1.149 schwarze 2728: return ROFF_CONT;
1.14 schwarze 2729: }
2730:
2731: static enum rofferr
1.27 schwarze 2732: roff_TE(ROFF_ARGS)
2733: {
2734:
2735: if (NULL == r->tbl)
1.94 schwarze 2736: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2737: ln, ppos, "TE");
1.130 schwarze 2738: else if ( ! tbl_end(&r->tbl)) {
2739: free(buf->buf);
2740: buf->buf = mandoc_strdup(".sp");
2741: buf->sz = 4;
1.149 schwarze 2742: return ROFF_REPARSE;
1.130 schwarze 2743: }
1.149 schwarze 2744: return ROFF_IGN;
1.27 schwarze 2745: }
2746:
2747: static enum rofferr
2748: roff_T_(ROFF_ARGS)
2749: {
2750:
2751: if (NULL == r->tbl)
1.94 schwarze 2752: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2753: ln, ppos, "T&");
1.27 schwarze 2754: else
1.168 schwarze 2755: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 2756:
1.149 schwarze 2757: return ROFF_IGN;
1.27 schwarze 2758: }
2759:
1.102 schwarze 2760: /*
2761: * Handle in-line equation delimiters.
2762: */
2763: static enum rofferr
1.110 schwarze 2764: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2765: {
1.105 schwarze 2766: char *cp1, *cp2;
2767: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2768:
1.102 schwarze 2769: /*
2770: * Outside equations, look for an opening delimiter.
2771: * If we are inside an equation, we already know it is
2772: * in-line, or this function wouldn't have been called;
2773: * so look for a closing delimiter.
2774: */
2775:
1.110 schwarze 2776: cp1 = buf->buf + pos;
1.102 schwarze 2777: cp2 = strchr(cp1, r->eqn == NULL ?
2778: r->last_eqn->odelim : r->last_eqn->cdelim);
2779: if (cp2 == NULL)
1.149 schwarze 2780: return ROFF_CONT;
1.102 schwarze 2781:
1.105 schwarze 2782: *cp2++ = '\0';
2783: bef_pr = bef_nl = aft_nl = aft_pr = "";
2784:
2785: /* Handle preceding text, protecting whitespace. */
2786:
1.110 schwarze 2787: if (*buf->buf != '\0') {
1.105 schwarze 2788: if (r->eqn == NULL)
2789: bef_pr = "\\&";
2790: bef_nl = "\n";
2791: }
2792:
2793: /*
2794: * Prepare replacing the delimiter with an equation macro
2795: * and drop leading white space from the equation.
2796: */
1.102 schwarze 2797:
1.105 schwarze 2798: if (r->eqn == NULL) {
2799: while (*cp2 == ' ')
2800: cp2++;
2801: mac = ".EQ";
2802: } else
2803: mac = ".EN";
2804:
2805: /* Handle following text, protecting whitespace. */
2806:
2807: if (*cp2 != '\0') {
2808: aft_nl = "\n";
2809: if (r->eqn != NULL)
2810: aft_pr = "\\&";
2811: }
2812:
2813: /* Do the actual replacement. */
2814:
1.110 schwarze 2815: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2816: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2817: free(buf->buf);
2818: buf->buf = cp1;
1.102 schwarze 2819:
2820: /* Toggle the in-line state of the eqn subsystem. */
2821:
2822: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2823: return ROFF_REPARSE;
1.41 schwarze 2824: }
2825:
1.107 schwarze 2826: static enum rofferr
2827: roff_EQ(ROFF_ARGS)
1.32 schwarze 2828: {
1.41 schwarze 2829: struct eqn_node *e;
1.32 schwarze 2830:
1.110 schwarze 2831: assert(r->eqn == NULL);
1.107 schwarze 2832: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2833:
1.102 schwarze 2834: if (r->last_eqn) {
1.32 schwarze 2835: r->last_eqn->next = e;
1.102 schwarze 2836: e->delim = r->last_eqn->delim;
2837: e->odelim = r->last_eqn->odelim;
2838: e->cdelim = r->last_eqn->cdelim;
2839: } else
1.32 schwarze 2840: r->first_eqn = r->last_eqn = e;
2841:
2842: r->eqn = r->last_eqn = e;
1.41 schwarze 2843:
1.110 schwarze 2844: if (buf->buf[pos] != '\0')
1.107 schwarze 2845: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2846: ".EQ %s", buf->buf + pos);
1.41 schwarze 2847:
1.149 schwarze 2848: return ROFF_IGN;
1.32 schwarze 2849: }
2850:
2851: static enum rofferr
2852: roff_EN(ROFF_ARGS)
2853: {
2854:
1.94 schwarze 2855: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.149 schwarze 2856: return ROFF_IGN;
1.32 schwarze 2857: }
2858:
2859: static enum rofferr
1.27 schwarze 2860: roff_TS(ROFF_ARGS)
2861: {
1.49 schwarze 2862: struct tbl_node *tbl;
1.27 schwarze 2863:
2864: if (r->tbl) {
1.94 schwarze 2865: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2866: ln, ppos, "TS breaks TS");
1.41 schwarze 2867: tbl_end(&r->tbl);
1.27 schwarze 2868: }
2869:
1.49 schwarze 2870: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2871:
2872: if (r->last_tbl)
1.49 schwarze 2873: r->last_tbl->next = tbl;
1.27 schwarze 2874: else
1.49 schwarze 2875: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2876:
1.49 schwarze 2877: r->tbl = r->last_tbl = tbl;
1.169 schwarze 2878: return ROFF_IGN;
2879: }
2880:
2881: static enum rofferr
2882: roff_onearg(ROFF_ARGS)
2883: {
2884: struct roff_node *n;
2885: char *cp;
1.177 schwarze 2886: int npos;
1.169 schwarze 2887:
1.174 schwarze 2888: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
2889: (tok == ROFF_sp || tok == ROFF_ti))
2890: man_breakscope(r->man, tok);
2891:
1.181 schwarze 2892: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 2893: r->man->last = roffce_node;
2894: r->man->next = ROFF_NEXT_SIBLING;
2895: }
2896:
1.169 schwarze 2897: roff_elem_alloc(r->man, ln, ppos, tok);
2898: n = r->man->last;
2899:
2900: cp = buf->buf + pos;
2901: if (*cp != '\0') {
2902: while (*cp != '\0' && *cp != ' ')
2903: cp++;
2904: while (*cp == ' ')
2905: *cp++ = '\0';
2906: if (*cp != '\0')
2907: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2908: r->parse, ln, cp - buf->buf,
2909: "%s ... %s", roff_name[tok], cp);
2910: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 2911: }
2912:
1.181 schwarze 2913: if (tok == ROFF_ce || tok == ROFF_rj) {
2914: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 2915: roff_word_alloc(r->man, ln, pos, "1");
2916: r->man->last->flags |= NODE_NOSRC;
2917: }
2918: npos = 0;
2919: if (roff_evalnum(r, ln, r->man->last->string, &npos,
2920: &roffce_lines, 0) == 0) {
2921: mandoc_vmsg(MANDOCERR_CE_NONUM,
2922: r->parse, ln, pos, "ce %s", buf->buf + pos);
2923: roffce_lines = 1;
2924: }
2925: if (roffce_lines < 1) {
2926: r->man->last = r->man->last->parent;
2927: roffce_node = NULL;
2928: roffce_lines = 0;
2929: } else
2930: roffce_node = r->man->last->parent;
2931: } else {
2932: n->flags |= NODE_VALID | NODE_ENDED;
2933: r->man->last = n;
2934: }
2935: n->flags |= NODE_LINE;
1.172 schwarze 2936: r->man->next = ROFF_NEXT_SIBLING;
2937: return ROFF_IGN;
2938: }
2939:
2940: static enum rofferr
2941: roff_manyarg(ROFF_ARGS)
2942: {
2943: struct roff_node *n;
2944: char *sp, *ep;
2945:
2946: roff_elem_alloc(r->man, ln, ppos, tok);
2947: n = r->man->last;
2948:
2949: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
2950: while (*ep != '\0' && *ep != ' ')
2951: ep++;
2952: while (*ep == ' ')
2953: *ep++ = '\0';
2954: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 2955: }
2956:
2957: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2958: r->man->last = n;
2959: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 2960: return ROFF_IGN;
1.123 schwarze 2961: }
2962:
2963: static enum rofferr
1.183 schwarze 2964: roff_als(ROFF_ARGS)
2965: {
2966: char *oldn, *newn, *end, *value;
2967: size_t oldsz, newsz, valsz;
2968:
2969: newn = oldn = buf->buf + pos;
2970: if (*newn == '\0')
2971: return ROFF_IGN;
2972:
2973: newsz = roff_getname(r, &oldn, ln, pos);
2974: if (newn[newsz] == '\\' || *oldn == '\0')
2975: return ROFF_IGN;
2976:
2977: end = oldn;
2978: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
2979: if (oldsz == 0)
2980: return ROFF_IGN;
2981:
2982: valsz = mandoc_asprintf(&value, ".%.*s \\$*\n", (int)oldsz, oldn);
2983: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
2984: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
2985: free(value);
2986: return ROFF_IGN;
2987: }
2988:
2989: static enum rofferr
1.168 schwarze 2990: roff_br(ROFF_ARGS)
1.123 schwarze 2991: {
1.174 schwarze 2992: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
2993: man_breakscope(r->man, ROFF_br);
1.168 schwarze 2994: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
2995: if (buf->buf[pos] != '\0')
2996: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2997: "%s %s", roff_name[tok], buf->buf + pos);
2998: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2999: r->man->next = ROFF_NEXT_SIBLING;
3000: return ROFF_IGN;
1.27 schwarze 3001: }
3002:
3003: static enum rofferr
1.48 schwarze 3004: roff_cc(ROFF_ARGS)
3005: {
3006: const char *p;
3007:
1.110 schwarze 3008: p = buf->buf + pos;
1.48 schwarze 3009:
1.110 schwarze 3010: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3011: r->control = '\0';
1.48 schwarze 3012:
1.110 schwarze 3013: if (*p != '\0')
1.132 schwarze 3014: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3015: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3016:
1.149 schwarze 3017: return ROFF_IGN;
1.48 schwarze 3018: }
3019:
3020: static enum rofferr
1.175 schwarze 3021: roff_ec(ROFF_ARGS)
3022: {
3023: const char *p;
3024:
3025: p = buf->buf + pos;
3026: if (*p == '\0')
3027: r->escape = '\\';
3028: else {
3029: r->escape = *p;
3030: if (*++p != '\0')
3031: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3032: ln, p - buf->buf, "ec ... %s", p);
3033: }
3034: return ROFF_IGN;
3035: }
3036:
3037: static enum rofferr
3038: roff_eo(ROFF_ARGS)
3039: {
3040: r->escape = '\0';
3041: if (buf->buf[pos] != '\0')
3042: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3043: ln, pos, "eo %s", buf->buf + pos);
3044: return ROFF_IGN;
3045: }
3046:
3047: static enum rofferr
1.42 schwarze 3048: roff_tr(ROFF_ARGS)
3049: {
3050: const char *p, *first, *second;
3051: size_t fsz, ssz;
3052: enum mandoc_esc esc;
3053:
1.110 schwarze 3054: p = buf->buf + pos;
1.42 schwarze 3055:
1.110 schwarze 3056: if (*p == '\0') {
1.132 schwarze 3057: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 3058: return ROFF_IGN;
1.42 schwarze 3059: }
3060:
1.110 schwarze 3061: while (*p != '\0') {
1.42 schwarze 3062: fsz = ssz = 1;
3063:
3064: first = p++;
1.110 schwarze 3065: if (*first == '\\') {
1.42 schwarze 3066: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3067: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3068: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3069: ln, (int)(p - buf->buf), first);
1.149 schwarze 3070: return ROFF_IGN;
1.42 schwarze 3071: }
3072: fsz = (size_t)(p - first);
3073: }
3074:
3075: second = p++;
1.110 schwarze 3076: if (*second == '\\') {
1.42 schwarze 3077: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3078: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3079: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3080: ln, (int)(p - buf->buf), second);
1.149 schwarze 3081: return ROFF_IGN;
1.42 schwarze 3082: }
3083: ssz = (size_t)(p - second);
1.110 schwarze 3084: } else if (*second == '\0') {
1.132 schwarze 3085: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3086: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3087: second = " ";
3088: p--;
3089: }
3090:
3091: if (fsz > 1) {
1.80 schwarze 3092: roff_setstrn(&r->xmbtab, first, fsz,
3093: second, ssz, 0);
1.42 schwarze 3094: continue;
3095: }
3096:
1.110 schwarze 3097: if (r->xtab == NULL)
1.80 schwarze 3098: r->xtab = mandoc_calloc(128,
3099: sizeof(struct roffstr));
1.42 schwarze 3100:
3101: free(r->xtab[(int)*first].p);
3102: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3103: r->xtab[(int)*first].sz = ssz;
3104: }
3105:
1.149 schwarze 3106: return ROFF_IGN;
1.42 schwarze 3107: }
3108:
3109: static enum rofferr
1.178 schwarze 3110: roff_rn(ROFF_ARGS)
3111: {
3112: const char *value;
3113: char *oldn, *newn, *end;
3114: size_t oldsz, newsz;
3115:
3116: oldn = newn = buf->buf + pos;
3117: if (*oldn == '\0')
3118: return ROFF_IGN;
3119:
3120: oldsz = roff_getname(r, &newn, ln, pos);
3121: if (oldn[oldsz] == '\\' || *newn == '\0')
3122: return ROFF_IGN;
3123:
3124: end = newn;
3125: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3126: if (newsz == 0)
3127: return ROFF_IGN;
3128:
3129: /*
3130: * Rename a user-defined macro bearing the old name,
3131: * overriding an existing renamed high-level macro
3132: * bearing the new name, if that exists.
3133: */
3134:
3135: if ((value = roff_getstrn(r, oldn, oldsz)) != NULL) {
3136: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3137: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3138: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3139: return ROFF_IGN;
3140: }
3141:
3142: /*
3143: * Rename a high-level macro bearing the old name,
3144: * either renaming it a second time if it was already
3145: * renamed before, or renaming it for the first time.
3146: * In both cases, override an existing user-defined
3147: * macro bearing the new name, if that exists.
3148: */
3149:
3150: if ((value = roff_getrenn(r, oldn, oldsz)) != NULL) {
3151: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3152: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
3153: } else
3154: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
3155: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3156: return ROFF_IGN;
3157: }
3158:
3159: static enum rofferr
1.14 schwarze 3160: roff_so(ROFF_ARGS)
3161: {
1.121 schwarze 3162: char *name, *cp;
1.15 schwarze 3163:
1.110 schwarze 3164: name = buf->buf + pos;
1.97 schwarze 3165: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3166:
1.22 schwarze 3167: /*
3168: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3169: * opening anything that's not in our cwd or anything beneath
3170: * it. Thus, explicitly disallow traversing up the file-system
3171: * or using absolute paths.
3172: */
3173:
1.110 schwarze 3174: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3175: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3176: ".so %s", name);
1.121 schwarze 3177: buf->sz = mandoc_asprintf(&cp,
3178: ".sp\nSee the file %s.\n.sp", name) + 1;
3179: free(buf->buf);
3180: buf->buf = cp;
3181: *offs = 0;
1.149 schwarze 3182: return ROFF_REPARSE;
1.14 schwarze 3183: }
3184:
3185: *offs = pos;
1.149 schwarze 3186: return ROFF_SO;
1.7 schwarze 3187: }
3188:
1.138 schwarze 3189: /* --- user defined strings and macros ------------------------------------ */
3190:
1.16 schwarze 3191: static enum rofferr
3192: roff_userdef(ROFF_ARGS)
1.12 schwarze 3193: {
1.183 schwarze 3194: const char *arg[16], *ap;
1.16 schwarze 3195: char *cp, *n1, *n2;
1.164 schwarze 3196: int expand_count, i, ib, ie;
1.135 schwarze 3197: size_t asz, rsz;
1.12 schwarze 3198:
1.16 schwarze 3199: /*
3200: * Collect pointers to macro argument strings
1.61 schwarze 3201: * and NUL-terminate them.
1.16 schwarze 3202: */
1.135 schwarze 3203:
1.145 schwarze 3204: r->argc = 0;
1.110 schwarze 3205: cp = buf->buf + pos;
1.183 schwarze 3206: for (i = 0; i < 16; i++) {
1.145 schwarze 3207: if (*cp == '\0')
3208: arg[i] = "";
3209: else {
3210: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3211: r->argc = i + 1;
3212: }
3213: }
1.16 schwarze 3214:
3215: /*
3216: * Expand macro arguments.
1.12 schwarze 3217: */
1.135 schwarze 3218:
3219: buf->sz = strlen(r->current_string) + 1;
1.164 schwarze 3220: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.135 schwarze 3221: memcpy(n1, r->current_string, buf->sz);
1.164 schwarze 3222: expand_count = 0;
1.135 schwarze 3223: while (*cp != '\0') {
3224:
3225: /* Scan ahead for the next argument invocation. */
3226:
3227: if (*cp++ != '\\')
3228: continue;
3229: if (*cp++ != '$')
3230: continue;
1.146 schwarze 3231: if (*cp == '*') { /* \\$* inserts all arguments */
3232: ib = 0;
3233: ie = r->argc - 1;
3234: } else { /* \\$1 .. \\$9 insert one argument */
3235: ib = ie = *cp - '1';
3236: if (ib < 0 || ib > 8)
3237: continue;
3238: }
1.135 schwarze 3239: cp -= 2;
1.164 schwarze 3240:
3241: /*
3242: * Prevent infinite recursion.
3243: */
3244:
3245: if (cp >= n2)
3246: expand_count = 1;
3247: else if (++expand_count > EXPAND_LIMIT) {
3248: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3249: ln, (int)(cp - n1), NULL);
1.165 schwarze 3250: free(buf->buf);
3251: buf->buf = n1;
1.164 schwarze 3252: return ROFF_IGN;
3253: }
1.135 schwarze 3254:
3255: /*
3256: * Determine the size of the expanded argument,
3257: * taking escaping of quotes into account.
3258: */
3259:
1.146 schwarze 3260: asz = ie > ib ? ie - ib : 0; /* for blanks */
3261: for (i = ib; i <= ie; i++) {
3262: for (ap = arg[i]; *ap != '\0'; ap++) {
3263: asz++;
3264: if (*ap == '"')
3265: asz += 3;
3266: }
1.135 schwarze 3267: }
3268: if (asz != 3) {
3269:
3270: /*
3271: * Determine the size of the rest of the
3272: * unexpanded macro, including the NUL.
3273: */
3274:
3275: rsz = buf->sz - (cp - n1) - 3;
3276:
3277: /*
3278: * When shrinking, move before
3279: * releasing the storage.
3280: */
3281:
3282: if (asz < 3)
3283: memmove(cp + asz, cp + 3, rsz);
3284:
3285: /*
3286: * Resize the storage for the macro
3287: * and readjust the parse pointer.
3288: */
3289:
3290: buf->sz += asz - 3;
3291: n2 = mandoc_realloc(n1, buf->sz);
3292: cp = n2 + (cp - n1);
3293: n1 = n2;
3294:
3295: /*
3296: * When growing, make room
3297: * for the expanded argument.
3298: */
3299:
3300: if (asz > 3)
3301: memmove(cp + asz, cp + 3, rsz);
3302: }
3303:
3304: /* Copy the expanded argument, escaping quotes. */
3305:
3306: n2 = cp;
1.146 schwarze 3307: for (i = ib; i <= ie; i++) {
3308: for (ap = arg[i]; *ap != '\0'; ap++) {
3309: if (*ap == '"') {
3310: memcpy(n2, "\\(dq", 4);
3311: n2 += 4;
3312: } else
3313: *n2++ = *ap;
3314: }
3315: if (i < ie)
3316: *n2++ = ' ';
1.16 schwarze 3317: }
1.12 schwarze 3318: }
3319:
1.16 schwarze 3320: /*
3321: * Replace the macro invocation
3322: * by the expanded macro.
3323: */
1.135 schwarze 3324:
1.110 schwarze 3325: free(buf->buf);
3326: buf->buf = n1;
1.120 schwarze 3327: *offs = 0;
1.16 schwarze 3328:
1.149 schwarze 3329: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3330: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3331: }
1.28 schwarze 3332:
1.178 schwarze 3333: /*
3334: * Calling a high-level macro that was renamed with .rn.
3335: * r->current_string has already been set up by roff_parse().
3336: */
3337: static enum rofferr
3338: roff_renamed(ROFF_ARGS)
3339: {
3340: char *nbuf;
3341:
3342: buf->sz = mandoc_asprintf(&nbuf, ".%s %s", r->current_string,
3343: buf->buf + pos) + 1;
3344: free(buf->buf);
3345: buf->buf = nbuf;
3346: return ROFF_CONT;
3347: }
3348:
1.85 schwarze 3349: static size_t
1.28 schwarze 3350: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3351: {
3352: char *name, *cp;
1.85 schwarze 3353: size_t namesz;
1.28 schwarze 3354:
3355: name = *cpp;
3356: if ('\0' == *name)
1.149 schwarze 3357: return 0;
1.28 schwarze 3358:
1.85 schwarze 3359: /* Read until end of name and terminate it with NUL. */
3360: for (cp = name; 1; cp++) {
3361: if ('\0' == *cp || ' ' == *cp) {
3362: namesz = cp - name;
3363: break;
3364: }
1.28 schwarze 3365: if ('\\' != *cp)
3366: continue;
1.88 schwarze 3367: namesz = cp - name;
3368: if ('{' == cp[1] || '}' == cp[1])
3369: break;
1.28 schwarze 3370: cp++;
3371: if ('\\' == *cp)
3372: continue;
1.97 schwarze 3373: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3374: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3375: mandoc_escape((const char **)&cp, NULL, NULL);
3376: break;
1.28 schwarze 3377: }
3378:
3379: /* Read past spaces. */
3380: while (' ' == *cp)
3381: cp++;
3382:
3383: *cpp = cp;
1.149 schwarze 3384: return namesz;
1.28 schwarze 3385: }
3386:
1.16 schwarze 3387: /*
3388: * Store *string into the user-defined string called *name.
3389: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3390: * append == 0: replace mode
3391: * append == 1: single-line append mode
3392: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3393: */
1.8 schwarze 3394: static void
1.16 schwarze 3395: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3396: int append)
1.7 schwarze 3397: {
1.42 schwarze 3398:
3399: roff_setstrn(&r->strtab, name, strlen(name), string,
1.80 schwarze 3400: string ? strlen(string) : 0, append);
1.42 schwarze 3401: }
3402:
3403: static void
3404: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3405: const char *string, size_t stringsz, int append)
1.42 schwarze 3406: {
3407: struct roffkv *n;
3408: char *c;
3409: int i;
3410: size_t oldch, newch;
1.7 schwarze 3411:
1.16 schwarze 3412: /* Search for an existing string with the same name. */
1.42 schwarze 3413: n = *r;
3414:
1.84 schwarze 3415: while (n && (namesz != n->key.sz ||
3416: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3417: n = n->next;
1.8 schwarze 3418:
3419: if (NULL == n) {
1.16 schwarze 3420: /* Create a new string table entry. */
1.42 schwarze 3421: n = mandoc_malloc(sizeof(struct roffkv));
3422: n->key.p = mandoc_strndup(name, namesz);
3423: n->key.sz = namesz;
3424: n->val.p = NULL;
3425: n->val.sz = 0;
3426: n->next = *r;
3427: *r = n;
1.66 schwarze 3428: } else if (0 == append) {
1.42 schwarze 3429: free(n->val.p);
3430: n->val.p = NULL;
3431: n->val.sz = 0;
1.16 schwarze 3432: }
3433:
3434: if (NULL == string)
3435: return;
3436:
3437: /*
3438: * One additional byte for the '\n' in multiline mode,
3439: * and one for the terminating '\0'.
3440: */
1.66 schwarze 3441: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3442:
3443: if (NULL == n->val.p) {
3444: n->val.p = mandoc_malloc(newch);
3445: *n->val.p = '\0';
1.16 schwarze 3446: oldch = 0;
3447: } else {
1.42 schwarze 3448: oldch = n->val.sz;
3449: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3450: }
3451:
3452: /* Skip existing content in the destination buffer. */
1.42 schwarze 3453: c = n->val.p + (int)oldch;
1.16 schwarze 3454:
3455: /* Append new content to the destination buffer. */
1.42 schwarze 3456: i = 0;
3457: while (i < (int)stringsz) {
1.16 schwarze 3458: /*
3459: * Rudimentary roff copy mode:
3460: * Handle escaped backslashes.
3461: */
1.42 schwarze 3462: if ('\\' == string[i] && '\\' == string[i + 1])
3463: i++;
3464: *c++ = string[i++];
1.16 schwarze 3465: }
1.8 schwarze 3466:
1.16 schwarze 3467: /* Append terminating bytes. */
1.66 schwarze 3468: if (1 < append)
1.16 schwarze 3469: *c++ = '\n';
1.42 schwarze 3470:
1.16 schwarze 3471: *c = '\0';
1.42 schwarze 3472: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3473: }
3474:
1.8 schwarze 3475: static const char *
3476: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.7 schwarze 3477: {
1.42 schwarze 3478: const struct roffkv *n;
1.64 schwarze 3479: int i;
1.7 schwarze 3480:
1.42 schwarze 3481: for (n = r->strtab; n; n = n->next)
1.80 schwarze 3482: if (0 == strncmp(name, n->key.p, len) &&
3483: '\0' == n->key.p[(int)len])
1.149 schwarze 3484: return n->val.p;
1.64 schwarze 3485:
3486: for (i = 0; i < PREDEFS_MAX; i++)
3487: if (0 == strncmp(name, predefs[i].name, len) &&
3488: '\0' == predefs[i].name[(int)len])
1.149 schwarze 3489: return predefs[i].str;
1.178 schwarze 3490:
3491: return NULL;
3492: }
3493:
3494: /*
3495: * Check whether *name is the renamed name of a high-level macro.
3496: * Return the standard name, or NULL if it is not.
3497: */
3498: static const char *
3499: roff_getrenn(const struct roff *r, const char *name, size_t len)
3500: {
3501: const struct roffkv *n;
3502:
3503: for (n = r->rentab; n; n = n->next)
3504: if (0 == strncmp(name, n->key.p, len) &&
3505: '\0' == n->key.p[(int)len])
3506: return n->val.p;
1.8 schwarze 3507:
1.149 schwarze 3508: return NULL;
1.7 schwarze 3509: }
3510:
1.8 schwarze 3511: static void
1.42 schwarze 3512: roff_freestr(struct roffkv *r)
1.7 schwarze 3513: {
1.42 schwarze 3514: struct roffkv *n, *nn;
1.7 schwarze 3515:
1.42 schwarze 3516: for (n = r; n; n = nn) {
3517: free(n->key.p);
3518: free(n->val.p);
1.7 schwarze 3519: nn = n->next;
3520: free(n);
3521: }
1.27 schwarze 3522: }
1.138 schwarze 3523:
3524: /* --- accessors and utility functions ------------------------------------ */
1.27 schwarze 3525:
3526: const struct tbl_span *
3527: roff_span(const struct roff *r)
3528: {
1.80 schwarze 3529:
1.149 schwarze 3530: return r->tbl ? tbl_span(r->tbl) : NULL;
1.32 schwarze 3531: }
3532:
3533: const struct eqn *
3534: roff_eqn(const struct roff *r)
3535: {
1.80 schwarze 3536:
1.149 schwarze 3537: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.42 schwarze 3538: }
3539:
3540: /*
3541: * Duplicate an input string, making the appropriate character
3542: * conversations (as stipulated by `tr') along the way.
3543: * Returns a heap-allocated string with all the replacements made.
3544: */
3545: char *
3546: roff_strdup(const struct roff *r, const char *p)
3547: {
3548: const struct roffkv *cp;
3549: char *res;
3550: const char *pp;
3551: size_t ssz, sz;
3552: enum mandoc_esc esc;
3553:
3554: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3555: return mandoc_strdup(p);
1.42 schwarze 3556: else if ('\0' == *p)
1.149 schwarze 3557: return mandoc_strdup("");
1.42 schwarze 3558:
3559: /*
3560: * Step through each character looking for term matches
3561: * (remember that a `tr' can be invoked with an escape, which is
3562: * a glyph but the escape is multi-character).
3563: * We only do this if the character hash has been initialised
3564: * and the string is >0 length.
3565: */
3566:
3567: res = NULL;
3568: ssz = 0;
3569:
3570: while ('\0' != *p) {
1.161 schwarze 3571: assert((unsigned int)*p < 128);
3572: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3573: sz = r->xtab[(int)*p].sz;
3574: res = mandoc_realloc(res, ssz + sz + 1);
3575: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3576: ssz += sz;
3577: p++;
3578: continue;
3579: } else if ('\\' != *p) {
3580: res = mandoc_realloc(res, ssz + 2);
3581: res[ssz++] = *p++;
3582: continue;
3583: }
3584:
3585: /* Search for term matches. */
3586: for (cp = r->xmbtab; cp; cp = cp->next)
3587: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3588: break;
3589:
3590: if (NULL != cp) {
3591: /*
3592: * A match has been found.
3593: * Append the match to the array and move
3594: * forward by its keysize.
3595: */
1.80 schwarze 3596: res = mandoc_realloc(res,
3597: ssz + cp->val.sz + 1);
1.42 schwarze 3598: memcpy(res + ssz, cp->val.p, cp->val.sz);
3599: ssz += cp->val.sz;
3600: p += (int)cp->key.sz;
3601: continue;
3602: }
3603:
3604: /*
3605: * Handle escapes carefully: we need to copy
3606: * over just the escape itself, or else we might
3607: * do replacements within the escape itself.
3608: * Make sure to pass along the bogus string.
3609: */
3610: pp = p++;
3611: esc = mandoc_escape(&p, NULL, NULL);
3612: if (ESCAPE_ERROR == esc) {
3613: sz = strlen(pp);
3614: res = mandoc_realloc(res, ssz + sz + 1);
3615: memcpy(res + ssz, pp, sz);
3616: break;
3617: }
1.80 schwarze 3618: /*
3619: * We bail out on bad escapes.
1.42 schwarze 3620: * No need to warn: we already did so when
3621: * roff_res() was called.
3622: */
3623: sz = (int)(p - pp);
3624: res = mandoc_realloc(res, ssz + sz + 1);
3625: memcpy(res + ssz, pp, sz);
3626: ssz += sz;
3627: }
3628:
3629: res[(int)ssz] = '\0';
1.149 schwarze 3630: return res;
1.99 schwarze 3631: }
3632:
3633: int
3634: roff_getformat(const struct roff *r)
3635: {
3636:
1.149 schwarze 3637: return r->format;
1.48 schwarze 3638: }
3639:
3640: /*
1.80 schwarze 3641: * Find out whether a line is a macro line or not.
1.48 schwarze 3642: * If it is, adjust the current position and return one; if it isn't,
3643: * return zero and don't change the current position.
3644: * If the control character has been set with `.cc', then let that grain
3645: * precedence.
3646: * This is slighly contrary to groff, where using the non-breaking
3647: * control character when `cc' has been invoked will cause the
3648: * non-breaking macro contents to be printed verbatim.
3649: */
3650: int
3651: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3652: {
3653: int pos;
3654:
3655: pos = *ppos;
3656:
1.175 schwarze 3657: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 3658: pos++;
1.175 schwarze 3659: else if (r->control != '\0')
1.149 schwarze 3660: return 0;
1.48 schwarze 3661: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3662: pos += 2;
3663: else if ('.' == cp[pos] || '\'' == cp[pos])
3664: pos++;
3665: else
1.149 schwarze 3666: return 0;
1.48 schwarze 3667:
3668: while (' ' == cp[pos] || '\t' == cp[pos])
3669: pos++;
3670:
3671: *ppos = pos;
1.149 schwarze 3672: return 1;
1.1 schwarze 3673: }
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