Annotation of src/usr.bin/mandoc/roff.c, Revision 1.197
1.197 ! schwarze 1: /* $OpenBSD: roff.c,v 1.196 2017/07/14 17:16:13 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.197 ! schwarze 4: * Copyright (c) 2010-2015, 2017, 2018 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:
1.187 schwarze 40: /* Types of definitions of macros and strings. */
41: #define ROFFDEF_USER (1 << 1) /* User-defined. */
42: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
43: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
44: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
45: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
46: ROFFDEF_REN | ROFFDEF_STD)
1.197 ! schwarze 47: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.187 schwarze 48:
1.138 schwarze 49: /* --- data types --------------------------------------------------------- */
50:
1.41 schwarze 51: /*
1.42 schwarze 52: * An incredibly-simple string buffer.
53: */
1.8 schwarze 54: struct roffstr {
1.42 schwarze 55: char *p; /* nil-terminated buffer */
56: size_t sz; /* saved strlen(p) */
57: };
58:
59: /*
60: * A key-value roffstr pair as part of a singly-linked list.
61: */
62: struct roffkv {
63: struct roffstr key;
64: struct roffstr val;
65: struct roffkv *next; /* next in list */
1.8 schwarze 66: };
67:
1.52 schwarze 68: /*
69: * A single number register as part of a singly-linked list.
70: */
71: struct roffreg {
72: struct roffstr key;
1.53 schwarze 73: int val;
1.52 schwarze 74: struct roffreg *next;
75: };
76:
1.167 schwarze 77: /*
78: * Association of request and macro names with token IDs.
79: */
80: struct roffreq {
81: enum roff_tok tok;
82: char name[];
83: };
84:
1.1 schwarze 85: struct roff {
1.35 schwarze 86: struct mparse *parse; /* parse point */
1.168 schwarze 87: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 88: struct roffnode *last; /* leaf of stack */
1.96 schwarze 89: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 90: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 91: struct roffreg *regtab; /* number registers */
1.42 schwarze 92: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 93: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 94: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
95: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 96: const char *current_string; /* value of last called user macro */
1.27 schwarze 97: struct tbl_node *first_tbl; /* first table parsed */
98: struct tbl_node *last_tbl; /* last table parsed */
99: struct tbl_node *tbl; /* current table being parsed */
1.191 schwarze 100: struct eqn_node *last_eqn; /* equation parser */
101: struct eqn_node *eqn; /* active equation parser */
1.102 schwarze 102: int eqn_inline; /* current equation is inline */
1.96 schwarze 103: int options; /* parse options */
104: int rstacksz; /* current size limit of rstack */
105: int rstackpos; /* position in rstack */
1.99 schwarze 106: int format; /* current file in mdoc or man format */
1.145 schwarze 107: int argc; /* number of args of the last macro */
1.96 schwarze 108: char control; /* control character */
1.175 schwarze 109: char escape; /* escape character */
1.1 schwarze 110: };
111:
112: struct roffnode {
1.166 schwarze 113: enum roff_tok tok; /* type of node */
1.1 schwarze 114: struct roffnode *parent; /* up one in stack */
115: int line; /* parse line */
116: int col; /* parse col */
1.16 schwarze 117: char *name; /* node name, e.g. macro name */
1.2 schwarze 118: char *end; /* end-rules: custom token */
119: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 120: int rule; /* current evaluation rule */
1.1 schwarze 121: };
122:
123: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 124: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 125: struct buf *buf, /* input buffer */ \
1.1 schwarze 126: int ln, /* parse line */ \
1.2 schwarze 127: int ppos, /* original pos in buffer */ \
128: int pos, /* current pos in buffer */ \
129: int *offs /* reset offset of buffer data */
1.1 schwarze 130:
131: typedef enum rofferr (*roffproc)(ROFF_ARGS);
132:
133: struct roffmac {
1.2 schwarze 134: roffproc proc; /* process new macro */
135: roffproc text; /* process as child text of macro */
136: roffproc sub; /* process as child of macro */
137: int flags;
138: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 139: };
140:
1.37 schwarze 141: struct predef {
142: const char *name; /* predefined input name */
143: const char *str; /* replacement symbol */
144: };
145:
146: #define PREDEF(__name, __str) \
147: { (__name), (__str) },
148:
1.138 schwarze 149: /* --- function prototypes ------------------------------------------------ */
150:
1.42 schwarze 151: static void roffnode_cleanscope(struct roff *);
152: static void roffnode_pop(struct roff *);
1.166 schwarze 153: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 154: const char *, int, int);
1.193 schwarze 155: static void roff_addtbl(struct roff_man *, struct tbl_node *);
1.183 schwarze 156: static enum rofferr roff_als(ROFF_ARGS);
1.2 schwarze 157: static enum rofferr roff_block(ROFF_ARGS);
158: static enum rofferr roff_block_text(ROFF_ARGS);
159: static enum rofferr roff_block_sub(ROFF_ARGS);
1.168 schwarze 160: static enum rofferr roff_br(ROFF_ARGS);
1.2 schwarze 161: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 162: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 163: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 164: static enum rofferr roff_cond(ROFF_ARGS);
165: static enum rofferr roff_cond_text(ROFF_ARGS);
166: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 167: static enum rofferr roff_ds(ROFF_ARGS);
1.175 schwarze 168: static enum rofferr roff_ec(ROFF_ARGS);
169: static enum rofferr roff_eo(ROFF_ARGS);
1.110 schwarze 170: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 171: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 172: static int roff_evalnum(struct roff *, int,
173: const char *, int *, int *, int);
174: static int roff_evalpar(struct roff *, int,
1.133 schwarze 175: const char *, int *, int *, int);
1.71 schwarze 176: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 177: static void roff_free1(struct roff *);
1.52 schwarze 178: static void roff_freereg(struct roffreg *);
1.42 schwarze 179: static void roff_freestr(struct roffkv *);
1.85 schwarze 180: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 181: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 182: static int roff_getop(const char *, int *, char *);
1.53 schwarze 183: static int roff_getregn(const struct roff *,
184: const char *, size_t);
1.145 schwarze 185: static int roff_getregro(const struct roff *,
186: const char *name);
1.197 ! schwarze 187: static const char *roff_getstrn(struct roff *,
1.187 schwarze 188: const char *, size_t, int *);
1.143 schwarze 189: static int roff_hasregn(const struct roff *,
190: const char *, size_t);
1.123 schwarze 191: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 192: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 193: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 194: static void roff_man_alloc1(struct roff_man *);
195: static void roff_man_free1(struct roff_man *);
1.172 schwarze 196: static enum rofferr roff_manyarg(ROFF_ARGS);
1.6 schwarze 197: static enum rofferr roff_nr(ROFF_ARGS);
1.169 schwarze 198: static enum rofferr roff_onearg(ROFF_ARGS);
1.166 schwarze 199: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 200: int, int);
1.177 schwarze 201: static enum rofferr roff_parsetext(struct roff *, struct buf *,
202: int, int *);
1.178 schwarze 203: static enum rofferr roff_renamed(ROFF_ARGS);
1.110 schwarze 204: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 205: static enum rofferr roff_rm(ROFF_ARGS);
1.178 schwarze 206: static enum rofferr roff_rn(ROFF_ARGS);
1.76 schwarze 207: static enum rofferr roff_rr(ROFF_ARGS);
1.8 schwarze 208: static void roff_setstr(struct roff *,
1.16 schwarze 209: const char *, const char *, int);
1.80 schwarze 210: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 211: size_t, const char *, size_t, int);
1.14 schwarze 212: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 213: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 214: static enum rofferr roff_Dd(ROFF_ARGS);
1.27 schwarze 215: static enum rofferr roff_TE(ROFF_ARGS);
216: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 217: static enum rofferr roff_EQ(ROFF_ARGS);
218: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 219: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 220: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 221: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 222:
1.138 schwarze 223: /* --- constant data ------------------------------------------------------ */
224:
1.133 schwarze 225: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
226: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
227:
1.166 schwarze 228: const char *__roff_name[MAN_MAX + 1] = {
1.177 schwarze 229: "br", "ce", "ft", "ll",
1.184 schwarze 230: "mc", "po", "rj", "sp",
231: "ta", "ti", NULL,
1.166 schwarze 232: "ab", "ad", "af", "aln",
233: "als", "am", "am1", "ami",
234: "ami1", "as", "as1", "asciify",
235: "backtrace", "bd", "bleedat", "blm",
236: "box", "boxa", "bp", "BP",
237: "break", "breakchar", "brnl", "brp",
1.177 schwarze 238: "brpnl", "c2", "cc",
1.166 schwarze 239: "cf", "cflags", "ch", "char",
240: "chop", "class", "close", "CL",
241: "color", "composite", "continue", "cp",
242: "cropat", "cs", "cu", "da",
243: "dch", "Dd", "de", "de1",
244: "defcolor", "dei", "dei1", "device",
245: "devicem", "di", "do", "ds",
246: "ds1", "dwh", "dt", "ec",
247: "ecr", "ecs", "el", "em",
248: "EN", "eo", "EP", "EQ",
249: "errprint", "ev", "evc", "ex",
250: "fallback", "fam", "fc", "fchar",
251: "fcolor", "fdeferlig", "feature", "fkern",
252: "fl", "flig", "fp", "fps",
253: "fschar", "fspacewidth", "fspecial", "ftr",
254: "fzoom", "gcolor", "hc", "hcode",
255: "hidechar", "hla", "hlm", "hpf",
256: "hpfa", "hpfcode", "hw", "hy",
257: "hylang", "hylen", "hym", "hypp",
258: "hys", "ie", "if", "ig",
259: "index", "it", "itc", "IX",
260: "kern", "kernafter", "kernbefore", "kernpair",
261: "lc", "lc_ctype", "lds", "length",
262: "letadj", "lf", "lg", "lhang",
263: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 264: "ls", "lsm", "lt",
1.166 schwarze 265: "mediasize", "minss", "mk", "mso",
266: "na", "ne", "nh", "nhychar",
267: "nm", "nn", "nop", "nr",
268: "nrf", "nroff", "ns", "nx",
269: "open", "opena", "os", "output",
270: "padj", "papersize", "pc", "pev",
271: "pi", "PI", "pl", "pm",
1.184 schwarze 272: "pn", "pnr", "ps",
1.166 schwarze 273: "psbb", "pshape", "pso", "ptr",
274: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 275: "return", "rfschar", "rhang",
1.166 schwarze 276: "rm", "rn", "rnn", "rr",
277: "rs", "rt", "schar", "sentchar",
278: "shc", "shift", "sizes", "so",
279: "spacewidth", "special", "spreadwarn", "ss",
280: "sty", "substring", "sv", "sy",
1.172 schwarze 281: "T&", "tc", "TE",
1.173 schwarze 282: "TH", "tkf", "tl",
1.166 schwarze 283: "tm", "tm1", "tmc", "tr",
284: "track", "transchar", "trf", "trimat",
285: "trin", "trnt", "troff", "TS",
286: "uf", "ul", "unformat", "unwatch",
287: "unwatchn", "vpt", "vs", "warn",
288: "warnscale", "watch", "watchlength", "watchn",
289: "wh", "while", "write", "writec",
290: "writem", "xflag", ".", NULL,
1.178 schwarze 291: NULL, "text",
1.166 schwarze 292: "Dd", "Dt", "Os", "Sh",
293: "Ss", "Pp", "D1", "Dl",
294: "Bd", "Ed", "Bl", "El",
295: "It", "Ad", "An", "Ap",
296: "Ar", "Cd", "Cm", "Dv",
297: "Er", "Ev", "Ex", "Fa",
298: "Fd", "Fl", "Fn", "Ft",
299: "Ic", "In", "Li", "Nd",
300: "Nm", "Op", "Ot", "Pa",
301: "Rv", "St", "Va", "Vt",
302: "Xr", "%A", "%B", "%D",
303: "%I", "%J", "%N", "%O",
304: "%P", "%R", "%T", "%V",
305: "Ac", "Ao", "Aq", "At",
306: "Bc", "Bf", "Bo", "Bq",
307: "Bsx", "Bx", "Db", "Dc",
308: "Do", "Dq", "Ec", "Ef",
309: "Em", "Eo", "Fx", "Ms",
310: "No", "Ns", "Nx", "Ox",
311: "Pc", "Pf", "Po", "Pq",
312: "Qc", "Ql", "Qo", "Qq",
313: "Re", "Rs", "Sc", "So",
314: "Sq", "Sm", "Sx", "Sy",
315: "Tn", "Ux", "Xc", "Xo",
316: "Fo", "Fc", "Oo", "Oc",
317: "Bk", "Ek", "Bt", "Hf",
318: "Fr", "Ud", "Lb", "Lp",
319: "Lk", "Mt", "Brq", "Bro",
320: "Brc", "%C", "Es", "En",
1.171 schwarze 321: "Dx", "%Q", "%U", "Ta",
322: NULL,
1.166 schwarze 323: "TH", "SH", "SS", "TP",
324: "LP", "PP", "P", "IP",
325: "HP", "SM", "SB", "BI",
326: "IB", "BR", "RB", "R",
327: "B", "I", "IR", "RI",
1.171 schwarze 328: "nf", "fi",
1.166 schwarze 329: "RE", "RS", "DT", "UC",
1.169 schwarze 330: "PD", "AT", "in",
1.166 schwarze 331: "OP", "EX", "EE", "UR",
1.189 bentley 332: "UE", "MT", "ME", NULL
1.166 schwarze 333: };
334: const char *const *roff_name = __roff_name;
335:
336: static struct roffmac roffs[TOKEN_NONE] = {
1.168 schwarze 337: { roff_br, NULL, NULL, 0 }, /* br */
1.177 schwarze 338: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.169 schwarze 339: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 340: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 341: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.184 schwarze 342: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 343: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 344: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 345: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 346: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 347: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 348: { roff_unsupp, NULL, NULL, 0 }, /* ab */
349: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
350: { roff_line_ignore, NULL, NULL, 0 }, /* af */
351: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 352: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 353: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
354: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
355: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
356: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
357: { roff_ds, NULL, NULL, 0 }, /* as */
358: { roff_ds, NULL, NULL, 0 }, /* as1 */
359: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
360: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
361: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
362: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
363: { roff_unsupp, NULL, NULL, 0 }, /* blm */
364: { roff_unsupp, NULL, NULL, 0 }, /* box */
365: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
366: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
367: { roff_unsupp, NULL, NULL, 0 }, /* BP */
368: { roff_unsupp, NULL, NULL, 0 }, /* break */
369: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
370: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 schwarze 371: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 372: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
373: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
374: { roff_cc, NULL, NULL, 0 }, /* cc */
375: { roff_insec, NULL, NULL, 0 }, /* cf */
376: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
377: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
378: { roff_unsupp, NULL, NULL, 0 }, /* char */
379: { roff_unsupp, NULL, NULL, 0 }, /* chop */
380: { roff_line_ignore, NULL, NULL, 0 }, /* class */
381: { roff_insec, NULL, NULL, 0 }, /* close */
382: { roff_unsupp, NULL, NULL, 0 }, /* CL */
383: { roff_line_ignore, NULL, NULL, 0 }, /* color */
384: { roff_unsupp, NULL, NULL, 0 }, /* composite */
385: { roff_unsupp, NULL, NULL, 0 }, /* continue */
386: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
387: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
388: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
389: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
390: { roff_unsupp, NULL, NULL, 0 }, /* da */
391: { roff_unsupp, NULL, NULL, 0 }, /* dch */
392: { roff_Dd, NULL, NULL, 0 }, /* Dd */
393: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
394: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
395: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
396: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
397: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
398: { roff_unsupp, NULL, NULL, 0 }, /* device */
399: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
400: { roff_unsupp, NULL, NULL, 0 }, /* di */
401: { roff_unsupp, NULL, NULL, 0 }, /* do */
402: { roff_ds, NULL, NULL, 0 }, /* ds */
403: { roff_ds, NULL, NULL, 0 }, /* ds1 */
404: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
405: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 406: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 407: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
408: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
409: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
410: { roff_unsupp, NULL, NULL, 0 }, /* em */
411: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 412: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 413: { roff_unsupp, NULL, NULL, 0 }, /* EP */
414: { roff_EQ, NULL, NULL, 0 }, /* EQ */
415: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
416: { roff_unsupp, NULL, NULL, 0 }, /* ev */
417: { roff_unsupp, NULL, NULL, 0 }, /* evc */
418: { roff_unsupp, NULL, NULL, 0 }, /* ex */
419: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
420: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
421: { roff_unsupp, NULL, NULL, 0 }, /* fc */
422: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
423: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
424: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
425: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
426: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
427: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
428: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
429: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
430: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
431: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
432: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
433: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
434: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
435: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
436: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
437: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
438: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
439: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
440: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
441: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
442: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
443: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
444: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
445: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
446: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
447: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
448: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
449: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
450: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
451: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
452: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
453: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
454: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
455: { roff_unsupp, NULL, NULL, 0 }, /* index */
456: { roff_it, NULL, NULL, 0 }, /* it */
457: { roff_unsupp, NULL, NULL, 0 }, /* itc */
458: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
459: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
460: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
461: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
462: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
463: { roff_unsupp, NULL, NULL, 0 }, /* lc */
464: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
465: { roff_unsupp, NULL, NULL, 0 }, /* lds */
466: { roff_unsupp, NULL, NULL, 0 }, /* length */
467: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
468: { roff_insec, NULL, NULL, 0 }, /* lf */
469: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
470: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
471: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
472: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
473: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
474: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
475: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
476: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
477: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
478: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
479: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
480: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
481: { roff_insec, NULL, NULL, 0 }, /* mso */
482: { roff_line_ignore, NULL, NULL, 0 }, /* na */
483: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
484: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
485: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
486: { roff_unsupp, NULL, NULL, 0 }, /* nm */
487: { roff_unsupp, NULL, NULL, 0 }, /* nn */
488: { roff_unsupp, NULL, NULL, 0 }, /* nop */
489: { roff_nr, NULL, NULL, 0 }, /* nr */
490: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
491: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
492: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
493: { roff_insec, NULL, NULL, 0 }, /* nx */
494: { roff_insec, NULL, NULL, 0 }, /* open */
495: { roff_insec, NULL, NULL, 0 }, /* opena */
496: { roff_line_ignore, NULL, NULL, 0 }, /* os */
497: { roff_unsupp, NULL, NULL, 0 }, /* output */
498: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
499: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
500: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
501: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
502: { roff_insec, NULL, NULL, 0 }, /* pi */
503: { roff_unsupp, NULL, NULL, 0 }, /* PI */
504: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
505: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
506: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
507: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
508: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
509: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
510: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
511: { roff_insec, NULL, NULL, 0 }, /* pso */
512: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
513: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
514: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
515: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
516: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
517: { roff_unsupp, NULL, NULL, 0 }, /* return */
518: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
519: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
520: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 521: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 522: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
523: { roff_rr, NULL, NULL, 0 }, /* rr */
524: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
525: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
526: { roff_unsupp, NULL, NULL, 0 }, /* schar */
527: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
528: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
529: { roff_unsupp, NULL, NULL, 0 }, /* shift */
530: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
531: { roff_so, NULL, NULL, 0 }, /* so */
532: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
533: { roff_line_ignore, NULL, NULL, 0 }, /* special */
534: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
535: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
536: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
537: { roff_unsupp, NULL, NULL, 0 }, /* substring */
538: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
539: { roff_insec, NULL, NULL, 0 }, /* sy */
540: { roff_T_, NULL, NULL, 0 }, /* T& */
541: { roff_unsupp, NULL, NULL, 0 }, /* tc */
542: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 543: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 544: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
545: { roff_unsupp, NULL, NULL, 0 }, /* tl */
546: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
547: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
548: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
549: { roff_tr, NULL, NULL, 0 }, /* tr */
550: { roff_line_ignore, NULL, NULL, 0 }, /* track */
551: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
552: { roff_insec, NULL, NULL, 0 }, /* trf */
553: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
554: { roff_unsupp, NULL, NULL, 0 }, /* trin */
555: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
556: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
557: { roff_TS, NULL, NULL, 0 }, /* TS */
558: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
559: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
560: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
561: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
562: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
563: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
564: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
565: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
566: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
567: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
568: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
569: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
570: { roff_unsupp, NULL, NULL, 0 }, /* wh */
571: { roff_unsupp, NULL, NULL, 0 }, /* while */
572: { roff_insec, NULL, NULL, 0 }, /* write */
573: { roff_insec, NULL, NULL, 0 }, /* writec */
574: { roff_insec, NULL, NULL, 0 }, /* writem */
575: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
576: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 577: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 578: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 579: };
580:
1.37 schwarze 581: /* Array of injected predefined strings. */
582: #define PREDEFS_MAX 38
583: static const struct predef predefs[PREDEFS_MAX] = {
584: #include "predefs.in"
585: };
586:
1.177 schwarze 587: static int roffce_lines; /* number of input lines to center */
588: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 589: static int roffit_lines; /* number of lines to delay */
590: static char *roffit_macro; /* nil-terminated macro line */
591:
1.80 schwarze 592:
1.138 schwarze 593: /* --- request table ------------------------------------------------------ */
594:
1.167 schwarze 595: struct ohash *
596: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 597: {
1.167 schwarze 598: struct ohash *htab;
599: struct roffreq *req;
600: enum roff_tok tok;
601: size_t sz;
602: unsigned int slot;
1.3 schwarze 603:
1.167 schwarze 604: htab = mandoc_malloc(sizeof(*htab));
605: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 606:
1.167 schwarze 607: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 608: if (roff_name[tok] == NULL)
609: continue;
1.167 schwarze 610: sz = strlen(roff_name[tok]);
611: req = mandoc_malloc(sizeof(*req) + sz + 1);
612: req->tok = tok;
613: memcpy(req->name, roff_name[tok], sz + 1);
614: slot = ohash_qlookup(htab, req->name);
615: ohash_insert(htab, slot, req);
1.3 schwarze 616: }
1.167 schwarze 617: return htab;
1.3 schwarze 618: }
619:
1.167 schwarze 620: void
621: roffhash_free(struct ohash *htab)
1.1 schwarze 622: {
1.167 schwarze 623: struct roffreq *req;
624: unsigned int slot;
1.1 schwarze 625:
1.167 schwarze 626: if (htab == NULL)
627: return;
628: for (req = ohash_first(htab, &slot); req != NULL;
629: req = ohash_next(htab, &slot))
630: free(req);
631: ohash_delete(htab);
632: free(htab);
633: }
634:
635: enum roff_tok
636: roffhash_find(struct ohash *htab, const char *name, size_t sz)
637: {
638: struct roffreq *req;
639: const char *end;
640:
641: if (sz) {
642: end = name + sz;
643: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
644: } else
645: req = ohash_find(htab, ohash_qlookup(htab, name));
646: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 647: }
648:
1.138 schwarze 649: /* --- stack of request blocks -------------------------------------------- */
650:
1.1 schwarze 651: /*
652: * Pop the current node off of the stack of roff instructions currently
653: * pending.
654: */
655: static void
656: roffnode_pop(struct roff *r)
657: {
658: struct roffnode *p;
659:
1.2 schwarze 660: assert(r->last);
1.80 schwarze 661: p = r->last;
1.2 schwarze 662:
663: r->last = r->last->parent;
1.16 schwarze 664: free(p->name);
665: free(p->end);
1.1 schwarze 666: free(p);
667: }
668:
669: /*
670: * Push a roff node onto the instruction stack. This must later be
671: * removed with roffnode_pop().
672: */
1.11 schwarze 673: static void
1.166 schwarze 674: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 675: int line, int col)
1.1 schwarze 676: {
677: struct roffnode *p;
678:
1.11 schwarze 679: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 680: p->tok = tok;
1.16 schwarze 681: if (name)
682: p->name = mandoc_strdup(name);
1.1 schwarze 683: p->parent = r->last;
684: p->line = line;
685: p->col = col;
1.71 schwarze 686: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 687:
688: r->last = p;
689: }
690:
1.138 schwarze 691: /* --- roff parser state data management ---------------------------------- */
692:
1.1 schwarze 693: static void
694: roff_free1(struct roff *r)
695: {
1.49 schwarze 696: struct tbl_node *tbl;
1.42 schwarze 697: int i;
1.27 schwarze 698:
1.49 schwarze 699: while (NULL != (tbl = r->first_tbl)) {
700: r->first_tbl = tbl->next;
701: tbl_free(tbl);
1.27 schwarze 702: }
703: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 704:
1.191 schwarze 705: if (r->last_eqn != NULL)
706: eqn_free(r->last_eqn);
707: r->last_eqn = r->eqn = NULL;
1.32 schwarze 708:
1.1 schwarze 709: while (r->last)
710: roffnode_pop(r);
1.27 schwarze 711:
1.96 schwarze 712: free (r->rstack);
713: r->rstack = NULL;
714: r->rstacksz = 0;
715: r->rstackpos = -1;
716:
717: roff_freereg(r->regtab);
718: r->regtab = NULL;
719:
1.42 schwarze 720: roff_freestr(r->strtab);
1.178 schwarze 721: roff_freestr(r->rentab);
1.42 schwarze 722: roff_freestr(r->xmbtab);
1.178 schwarze 723: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 724:
725: if (r->xtab)
726: for (i = 0; i < 128; i++)
727: free(r->xtab[i].p);
728: free(r->xtab);
729: r->xtab = NULL;
1.1 schwarze 730: }
731:
732: void
733: roff_reset(struct roff *r)
734: {
735: roff_free1(r);
1.99 schwarze 736: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 737: r->control = '\0';
738: r->escape = '\\';
1.179 schwarze 739: roffce_lines = 0;
740: roffce_node = NULL;
741: roffit_lines = 0;
742: roffit_macro = NULL;
1.1 schwarze 743: }
744:
745: void
746: roff_free(struct roff *r)
747: {
748: roff_free1(r);
1.167 schwarze 749: roffhash_free(r->reqtab);
1.1 schwarze 750: free(r);
751: }
752:
753: struct roff *
1.151 schwarze 754: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 755: {
756: struct roff *r;
757:
1.11 schwarze 758: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 759: r->parse = parse;
1.167 schwarze 760: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.72 schwarze 761: r->options = options;
1.99 schwarze 762: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 763: r->rstackpos = -1;
1.175 schwarze 764: r->escape = '\\';
1.149 schwarze 765: return r;
1.137 schwarze 766: }
767:
1.138 schwarze 768: /* --- syntax tree state data management ---------------------------------- */
769:
1.137 schwarze 770: static void
771: roff_man_free1(struct roff_man *man)
772: {
773:
1.138 schwarze 774: if (man->first != NULL)
775: roff_node_delete(man, man->first);
1.137 schwarze 776: free(man->meta.msec);
777: free(man->meta.vol);
778: free(man->meta.os);
779: free(man->meta.arch);
780: free(man->meta.title);
781: free(man->meta.name);
782: free(man->meta.date);
783: }
784:
785: static void
786: roff_man_alloc1(struct roff_man *man)
787: {
788:
789: memset(&man->meta, 0, sizeof(man->meta));
790: man->first = mandoc_calloc(1, sizeof(*man->first));
791: man->first->type = ROFFT_ROOT;
792: man->last = man->first;
793: man->last_es = NULL;
794: man->flags = 0;
795: man->macroset = MACROSET_NONE;
796: man->lastsec = man->lastnamed = SEC_NONE;
797: man->next = ROFF_NEXT_CHILD;
798: }
799:
800: void
801: roff_man_reset(struct roff_man *man)
802: {
803:
804: roff_man_free1(man);
805: roff_man_alloc1(man);
806: }
807:
808: void
809: roff_man_free(struct roff_man *man)
810: {
811:
812: roff_man_free1(man);
813: free(man);
814: }
815:
816: struct roff_man *
817: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.188 schwarze 818: const char *os_s, int quick)
1.137 schwarze 819: {
820: struct roff_man *man;
821:
822: man = mandoc_calloc(1, sizeof(*man));
823: man->parse = parse;
824: man->roff = roff;
1.188 schwarze 825: man->os_s = os_s;
1.137 schwarze 826: man->quick = quick;
827: roff_man_alloc1(man);
1.168 schwarze 828: roff->man = man;
1.149 schwarze 829: return man;
1.1 schwarze 830: }
831:
1.138 schwarze 832: /* --- syntax tree handling ----------------------------------------------- */
833:
834: struct roff_node *
835: roff_node_alloc(struct roff_man *man, int line, int pos,
836: enum roff_type type, int tok)
837: {
838: struct roff_node *n;
839:
840: n = mandoc_calloc(1, sizeof(*n));
841: n->line = line;
842: n->pos = pos;
843: n->tok = tok;
844: n->type = type;
845: n->sec = man->lastsec;
846:
847: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 848: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 849: else
1.157 schwarze 850: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 851: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 852: n->flags |= NODE_LINE;
1.138 schwarze 853: man->flags &= ~MDOC_NEWLINE;
854:
1.149 schwarze 855: return n;
1.138 schwarze 856: }
857:
858: void
859: roff_node_append(struct roff_man *man, struct roff_node *n)
860: {
861:
862: switch (man->next) {
863: case ROFF_NEXT_SIBLING:
1.153 schwarze 864: if (man->last->next != NULL) {
865: n->next = man->last->next;
866: man->last->next->prev = n;
867: } else
868: man->last->parent->last = n;
1.138 schwarze 869: man->last->next = n;
870: n->prev = man->last;
871: n->parent = man->last->parent;
872: break;
873: case ROFF_NEXT_CHILD:
1.159 schwarze 874: if (man->last->child != NULL) {
875: n->next = man->last->child;
876: man->last->child->prev = n;
877: } else
878: man->last->last = n;
1.138 schwarze 879: man->last->child = n;
880: n->parent = man->last;
881: break;
882: default:
883: abort();
884: }
1.154 schwarze 885: man->last = n;
1.138 schwarze 886:
887: switch (n->type) {
888: case ROFFT_HEAD:
889: n->parent->head = n;
890: break;
891: case ROFFT_BODY:
1.154 schwarze 892: if (n->end != ENDBODY_NOT)
893: return;
1.138 schwarze 894: n->parent->body = n;
895: break;
896: case ROFFT_TAIL:
897: n->parent->tail = n;
898: break;
899: default:
1.154 schwarze 900: return;
1.138 schwarze 901: }
1.154 schwarze 902:
903: /*
904: * Copy over the normalised-data pointer of our parent. Not
905: * everybody has one, but copying a null pointer is fine.
906: */
907:
908: n->norm = n->parent->norm;
909: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 910: }
911:
1.139 schwarze 912: void
913: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
914: {
915: struct roff_node *n;
916:
917: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
918: n->string = roff_strdup(man->roff, word);
919: roff_node_append(man, n);
1.158 schwarze 920: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 921: man->next = ROFF_NEXT_SIBLING;
922: }
923:
924: void
925: roff_word_append(struct roff_man *man, const char *word)
926: {
927: struct roff_node *n;
928: char *addstr, *newstr;
929:
930: n = man->last;
931: addstr = roff_strdup(man->roff, word);
932: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
933: free(addstr);
934: free(n->string);
935: n->string = newstr;
936: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 937: }
938:
939: void
940: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
941: {
942: struct roff_node *n;
943:
944: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
945: roff_node_append(man, n);
946: man->next = ROFF_NEXT_CHILD;
947: }
948:
949: struct roff_node *
950: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
951: {
952: struct roff_node *n;
953:
954: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
955: roff_node_append(man, n);
956: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 957: return n;
1.139 schwarze 958: }
959:
1.138 schwarze 960: struct roff_node *
961: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
962: {
963: struct roff_node *n;
964:
965: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
966: roff_node_append(man, n);
967: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 968: return n;
1.138 schwarze 969: }
970:
971: struct roff_node *
972: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
973: {
974: struct roff_node *n;
975:
976: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
977: roff_node_append(man, n);
978: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 979: return n;
1.139 schwarze 980: }
981:
1.193 schwarze 982: static void
983: roff_addtbl(struct roff_man *man, struct tbl_node *tbl)
1.139 schwarze 984: {
985: struct roff_node *n;
1.193 schwarze 986: const struct tbl_span *span;
1.139 schwarze 987:
988: if (man->macroset == MACROSET_MAN)
1.174 schwarze 989: man_breakscope(man, ROFF_TS);
1.193 schwarze 990: while ((span = tbl_span(tbl)) != NULL) {
991: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
992: n->span = span;
993: roff_node_append(man, n);
994: n->flags |= NODE_VALID | NODE_ENDED;
995: man->next = ROFF_NEXT_SIBLING;
996: }
1.138 schwarze 997: }
998:
999: void
1000: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1001: {
1002:
1003: /* Adjust siblings. */
1004:
1005: if (n->prev)
1006: n->prev->next = n->next;
1007: if (n->next)
1008: n->next->prev = n->prev;
1009:
1010: /* Adjust parent. */
1011:
1012: if (n->parent != NULL) {
1013: if (n->parent->child == n)
1014: n->parent->child = n->next;
1015: if (n->parent->last == n)
1016: n->parent->last = n->prev;
1017: }
1018:
1019: /* Adjust parse point. */
1020:
1021: if (man == NULL)
1022: return;
1023: if (man->last == n) {
1024: if (n->prev == NULL) {
1025: man->last = n->parent;
1026: man->next = ROFF_NEXT_CHILD;
1027: } else {
1028: man->last = n->prev;
1029: man->next = ROFF_NEXT_SIBLING;
1030: }
1031: }
1032: if (man->first == n)
1033: man->first = NULL;
1034: }
1035:
1036: void
1037: roff_node_free(struct roff_node *n)
1038: {
1039:
1040: if (n->args != NULL)
1041: mdoc_argv_free(n->args);
1042: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1043: free(n->norm);
1.191 schwarze 1044: if (n->eqn != NULL)
1045: eqn_box_free(n->eqn);
1.138 schwarze 1046: free(n->string);
1047: free(n);
1048: }
1049:
1050: void
1051: roff_node_delete(struct roff_man *man, struct roff_node *n)
1052: {
1053:
1054: while (n->child != NULL)
1055: roff_node_delete(man, n->child);
1056: roff_node_unlink(man, n);
1057: roff_node_free(n);
1.141 schwarze 1058: }
1059:
1060: void
1061: deroff(char **dest, const struct roff_node *n)
1062: {
1063: char *cp;
1064: size_t sz;
1065:
1066: if (n->type != ROFFT_TEXT) {
1067: for (n = n->child; n != NULL; n = n->next)
1068: deroff(dest, n);
1069: return;
1070: }
1071:
1.160 schwarze 1072: /* Skip leading whitespace. */
1.141 schwarze 1073:
1.160 schwarze 1074: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1075: if (cp[0] == '\\' && cp[1] != '\0' &&
1076: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1077: cp++;
1.160 schwarze 1078: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1079: break;
1080: }
1081:
1.161 schwarze 1082: /* Skip trailing backslash. */
1083:
1084: sz = strlen(cp);
1.162 schwarze 1085: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1086: sz--;
1087:
1.141 schwarze 1088: /* Skip trailing whitespace. */
1089:
1.161 schwarze 1090: for (; sz; sz--)
1.141 schwarze 1091: if ( ! isspace((unsigned char)cp[sz-1]))
1092: break;
1093:
1094: /* Skip empty strings. */
1095:
1096: if (sz == 0)
1097: return;
1098:
1099: if (*dest == NULL) {
1100: *dest = mandoc_strndup(cp, sz);
1101: return;
1102: }
1103:
1104: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1105: free(*dest);
1106: *dest = cp;
1.138 schwarze 1107: }
1108:
1109: /* --- main functions of the roff parser ---------------------------------- */
1110:
1.8 schwarze 1111: /*
1.79 schwarze 1112: * In the current line, expand escape sequences that tend to get
1113: * used in numerical expressions and conditional requests.
1114: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1115: */
1.45 schwarze 1116: static enum rofferr
1.110 schwarze 1117: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1118: {
1.81 schwarze 1119: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1120: const char *start; /* start of the string to process */
1.82 schwarze 1121: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1122: const char *stnam; /* start of the name, after "[(*" */
1123: const char *cp; /* end of the name, e.g. before ']' */
1124: const char *res; /* the string to be substituted */
1.110 schwarze 1125: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1126: size_t maxl; /* expected length of the escape name */
1127: size_t naml; /* actual length of the escape name */
1.109 schwarze 1128: enum mandoc_esc esc; /* type of the escape sequence */
1129: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1130: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1131: int npos; /* position in numeric expression */
1.91 schwarze 1132: int arg_complete; /* argument not interrupted by eol */
1.175 schwarze 1133: int done; /* no more input available */
1.187 schwarze 1134: int deftype; /* type of definition to paste */
1.195 schwarze 1135: int rcsid; /* kind of RCS id seen */
1.79 schwarze 1136: char term; /* character terminating the escape */
1.8 schwarze 1137:
1.175 schwarze 1138: /* Search forward for comments. */
1139:
1140: done = 0;
1141: start = buf->buf + pos;
1142: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1143: if (stesc[0] != r->escape || stesc[1] == '\0')
1144: continue;
1145: stesc++;
1146: if (*stesc != '"' && *stesc != '#')
1147: continue;
1.185 schwarze 1148:
1149: /* Comment found, look for RCS id. */
1150:
1.195 schwarze 1151: rcsid = 0;
1.185 schwarze 1152: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.195 schwarze 1153: rcsid = 1 << MANDOC_OS_OPENBSD;
1.185 schwarze 1154: cp += 8;
1155: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.195 schwarze 1156: rcsid = 1 << MANDOC_OS_NETBSD;
1.185 schwarze 1157: cp += 7;
1158: }
1159: if (cp != NULL &&
1160: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1161: strchr(cp, '$') != NULL) {
1.195 schwarze 1162: if (r->man->meta.rcsids & rcsid)
1.186 schwarze 1163: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1164: ln, stesc + 1 - buf->buf, stesc + 1);
1.195 schwarze 1165: r->man->meta.rcsids |= rcsid;
1.186 schwarze 1166: }
1.185 schwarze 1167:
1168: /* Handle trailing whitespace. */
1169:
1.175 schwarze 1170: cp = strchr(stesc--, '\0') - 1;
1171: if (*cp == '\n') {
1172: done = 1;
1173: cp--;
1174: }
1175: if (*cp == ' ' || *cp == '\t')
1176: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1177: ln, cp - buf->buf, NULL);
1178: while (stesc > start && stesc[-1] == ' ')
1179: stesc--;
1180: *stesc = '\0';
1181: break;
1182: }
1183: if (stesc == start)
1184: return ROFF_CONT;
1185: stesc--;
1186:
1187: /* Notice the end of the input. */
1188:
1189: if (*stesc == '\n') {
1190: *stesc-- = '\0';
1191: done = 1;
1192: }
1193:
1.43 schwarze 1194: expand_count = 0;
1.175 schwarze 1195: while (stesc >= start) {
1.43 schwarze 1196:
1.78 schwarze 1197: /* Search backwards for the next backslash. */
1198:
1.175 schwarze 1199: if (*stesc != r->escape) {
1200: if (*stesc == '\\') {
1201: *stesc = '\0';
1202: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1203: buf->buf, stesc + 1) + 1;
1204: start = nbuf + pos;
1205: stesc = nbuf + (stesc - buf->buf);
1206: free(buf->buf);
1207: buf->buf = nbuf;
1208: }
1209: stesc--;
1.78 schwarze 1210: continue;
1.175 schwarze 1211: }
1.78 schwarze 1212:
1213: /* If it is escaped, skip it. */
1214:
1215: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1216: if (*cp != r->escape)
1.78 schwarze 1217: break;
1218:
1.110 schwarze 1219: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1220: while (stesc > cp)
1221: *stesc-- = '\\';
1.78 schwarze 1222: continue;
1.175 schwarze 1223: } else if (stesc[1] != '\0') {
1224: *stesc = '\\';
1225: } else {
1226: *stesc-- = '\0';
1227: if (done)
1228: continue;
1229: else
1230: return ROFF_APPEND;
1.78 schwarze 1231: }
1.23 schwarze 1232:
1.79 schwarze 1233: /* Decide whether to expand or to check only. */
1.23 schwarze 1234:
1.79 schwarze 1235: term = '\0';
1.78 schwarze 1236: cp = stesc + 1;
1.53 schwarze 1237: switch (*cp) {
1.80 schwarze 1238: case '*':
1.53 schwarze 1239: res = NULL;
1240: break;
1.80 schwarze 1241: case 'B':
1242: case 'w':
1.79 schwarze 1243: term = cp[1];
1244: /* FALLTHROUGH */
1.80 schwarze 1245: case 'n':
1.53 schwarze 1246: res = ubuf;
1247: break;
1248: default:
1.109 schwarze 1249: esc = mandoc_escape(&cp, &stnam, &inaml);
1250: if (esc == ESCAPE_ERROR ||
1251: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1252: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1253: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1254: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1255: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1256: stesc--;
1.78 schwarze 1257: continue;
1.42 schwarze 1258: }
1259:
1.78 schwarze 1260: if (EXPAND_LIMIT < ++expand_count) {
1261: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1262: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1263: return ROFF_IGN;
1.78 schwarze 1264: }
1.23 schwarze 1265:
1266: /*
1267: * The third character decides the length
1.53 schwarze 1268: * of the name of the string or register.
1.23 schwarze 1269: * Save a pointer to the name.
1270: */
1271:
1.110 schwarze 1272: if (term == '\0') {
1.79 schwarze 1273: switch (*++cp) {
1.80 schwarze 1274: case '\0':
1.79 schwarze 1275: maxl = 0;
1276: break;
1.80 schwarze 1277: case '(':
1.79 schwarze 1278: cp++;
1279: maxl = 2;
1280: break;
1.80 schwarze 1281: case '[':
1.79 schwarze 1282: cp++;
1283: term = ']';
1284: maxl = 0;
1285: break;
1286: default:
1287: maxl = 1;
1288: break;
1289: }
1290: } else {
1291: cp += 2;
1.8 schwarze 1292: maxl = 0;
1293: }
1.23 schwarze 1294: stnam = cp;
1.8 schwarze 1295:
1.23 schwarze 1296: /* Advance to the end of the name. */
1.8 schwarze 1297:
1.125 schwarze 1298: naml = 0;
1.91 schwarze 1299: arg_complete = 1;
1.125 schwarze 1300: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1301: if (*cp == '\0') {
1.92 schwarze 1302: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1303: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1304: arg_complete = 0;
1.79 schwarze 1305: break;
1.42 schwarze 1306: }
1.110 schwarze 1307: if (maxl == 0 && *cp == term) {
1.79 schwarze 1308: cp++;
1.125 schwarze 1309: break;
1310: }
1311: if (*cp++ != '\\' || stesc[1] != 'w') {
1312: naml++;
1313: continue;
1314: }
1315: switch (mandoc_escape(&cp, NULL, NULL)) {
1316: case ESCAPE_SPECIAL:
1317: case ESCAPE_UNICODE:
1318: case ESCAPE_NUMBERED:
1319: case ESCAPE_OVERSTRIKE:
1320: naml++;
1321: break;
1322: default:
1.8 schwarze 1323: break;
1.79 schwarze 1324: }
1.8 schwarze 1325: }
1326:
1.23 schwarze 1327: /*
1328: * Retrieve the replacement string; if it is
1329: * undefined, resume searching for escapes.
1330: */
1331:
1.79 schwarze 1332: switch (stesc[1]) {
1.80 schwarze 1333: case '*':
1.187 schwarze 1334: if (arg_complete) {
1335: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1336: res = roff_getstrn(r, stnam, naml, &deftype);
1337: }
1.79 schwarze 1338: break;
1.80 schwarze 1339: case 'B':
1.79 schwarze 1340: npos = 0;
1.91 schwarze 1341: ubuf[0] = arg_complete &&
1.133 schwarze 1342: roff_evalnum(r, ln, stnam, &npos,
1343: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1344: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1345: ubuf[1] = '\0';
1346: break;
1.80 schwarze 1347: case 'n':
1.91 schwarze 1348: if (arg_complete)
1349: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1350: roff_getregn(r, stnam, naml));
1351: else
1352: ubuf[0] = '\0';
1.79 schwarze 1353: break;
1.80 schwarze 1354: case 'w':
1.91 schwarze 1355: /* use even incomplete args */
1.81 schwarze 1356: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1357: 24 * (int)naml);
1358: break;
1359: }
1.8 schwarze 1360:
1.110 schwarze 1361: if (res == NULL) {
1.92 schwarze 1362: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1363: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1364: "%.*s", (int)naml, stnam);
1.37 schwarze 1365: res = "";
1.118 schwarze 1366: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1367: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1368: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1369: return ROFF_IGN;
1.8 schwarze 1370: }
1371:
1.23 schwarze 1372: /* Replace the escape sequence by the string. */
1373:
1.82 schwarze 1374: *stesc = '\0';
1.110 schwarze 1375: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1376: buf->buf, res, cp) + 1;
1.8 schwarze 1377:
1.78 schwarze 1378: /* Prepare for the next replacement. */
1.8 schwarze 1379:
1.78 schwarze 1380: start = nbuf + pos;
1.110 schwarze 1381: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1382: free(buf->buf);
1383: buf->buf = nbuf;
1.42 schwarze 1384: }
1.149 schwarze 1385: return ROFF_CONT;
1.42 schwarze 1386: }
1387:
1388: /*
1.147 schwarze 1389: * Process text streams.
1.42 schwarze 1390: */
1391: static enum rofferr
1.177 schwarze 1392: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1393: {
1394: size_t sz;
1395: const char *start;
1.51 schwarze 1396: char *p;
1397: int isz;
1.42 schwarze 1398: enum mandoc_esc esc;
1399:
1.147 schwarze 1400: /* Spring the input line trap. */
1401:
1402: if (roffit_lines == 1) {
1403: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1404: free(buf->buf);
1405: buf->buf = p;
1406: buf->sz = isz + 1;
1407: *offs = 0;
1408: free(roffit_macro);
1409: roffit_lines = 0;
1.149 schwarze 1410: return ROFF_REPARSE;
1.147 schwarze 1411: } else if (roffit_lines > 1)
1412: --roffit_lines;
1413:
1.177 schwarze 1414: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1415: if (roffce_lines < 1) {
1416: r->man->last = roffce_node;
1417: r->man->next = ROFF_NEXT_SIBLING;
1418: roffce_lines = 0;
1419: roffce_node = NULL;
1420: } else
1421: roffce_lines--;
1422: }
1423:
1.147 schwarze 1424: /* Convert all breakable hyphens into ASCII_HYPH. */
1425:
1.110 schwarze 1426: start = p = buf->buf + pos;
1.42 schwarze 1427:
1.110 schwarze 1428: while (*p != '\0') {
1.42 schwarze 1429: sz = strcspn(p, "-\\");
1430: p += sz;
1431:
1.110 schwarze 1432: if (*p == '\0')
1.42 schwarze 1433: break;
1434:
1.110 schwarze 1435: if (*p == '\\') {
1.42 schwarze 1436: /* Skip over escapes. */
1437: p++;
1.62 schwarze 1438: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1439: if (esc == ESCAPE_ERROR)
1.42 schwarze 1440: break;
1.136 schwarze 1441: while (*p == '-')
1442: p++;
1.42 schwarze 1443: continue;
1444: } else if (p == start) {
1445: p++;
1446: continue;
1447: }
1448:
1.44 schwarze 1449: if (isalpha((unsigned char)p[-1]) &&
1450: isalpha((unsigned char)p[1]))
1.42 schwarze 1451: *p = ASCII_HYPH;
1452: p++;
1.8 schwarze 1453: }
1.149 schwarze 1454: return ROFF_CONT;
1.8 schwarze 1455: }
1456:
1.1 schwarze 1457: enum rofferr
1.110 schwarze 1458: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1459: {
1.166 schwarze 1460: enum roff_tok t;
1.27 schwarze 1461: enum rofferr e;
1.110 schwarze 1462: int pos; /* parse point */
1.115 schwarze 1463: int spos; /* saved parse point for messages */
1.110 schwarze 1464: int ppos; /* original offset in buf->buf */
1465: int ctl; /* macro line (boolean) */
1466:
1467: ppos = pos = *offs;
1.1 schwarze 1468:
1.102 schwarze 1469: /* Handle in-line equation delimiters. */
1470:
1.108 schwarze 1471: if (r->tbl == NULL &&
1472: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1473: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1474: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1475: if (e == ROFF_REPARSE)
1.149 schwarze 1476: return e;
1.102 schwarze 1477: assert(e == ROFF_CONT);
1478: }
1479:
1480: /* Expand some escape sequences. */
1.8 schwarze 1481:
1.110 schwarze 1482: e = roff_res(r, buf, ln, pos);
1.175 schwarze 1483: if (e == ROFF_IGN || e == ROFF_APPEND)
1.149 schwarze 1484: return e;
1.110 schwarze 1485: assert(e == ROFF_CONT);
1.8 schwarze 1486:
1.110 schwarze 1487: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1488:
1.8 schwarze 1489: /*
1.2 schwarze 1490: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1491: * text through the macro's filter.
1492: * Equations process all content themselves.
1493: * Tables process almost all content themselves, but we want
1494: * to warn about macros before passing it there.
1.2 schwarze 1495: */
1496:
1.124 schwarze 1497: if (r->last != NULL && ! ctl) {
1.2 schwarze 1498: t = r->last->tok;
1.110 schwarze 1499: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.166 schwarze 1500: if (e == ROFF_IGN)
1.149 schwarze 1501: return e;
1.166 schwarze 1502: assert(e == ROFF_CONT);
1.54 schwarze 1503: }
1.191 schwarze 1504: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1505: eqn_read(r->eqn, buf->buf + ppos);
1506: return ROFF_IGN;
1507: }
1.193 schwarze 1508: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1509: tbl_read(r->tbl, ln, buf->buf, ppos);
1510: roff_addtbl(r->man, r->tbl);
1511: return ROFF_IGN;
1512: }
1.124 schwarze 1513: if ( ! ctl)
1.177 schwarze 1514: return roff_parsetext(r, buf, pos, offs);
1.100 schwarze 1515:
1516: /* Skip empty request lines. */
1517:
1.110 schwarze 1518: if (buf->buf[pos] == '"') {
1.100 schwarze 1519: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1520: ln, pos, NULL);
1.149 schwarze 1521: return ROFF_IGN;
1.110 schwarze 1522: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1523: return ROFF_IGN;
1.2 schwarze 1524:
1525: /*
1526: * If a scope is open, go to the child handler for that macro,
1527: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1528: * Don't do so if an equation is open.
1.2 schwarze 1529: */
1530:
1531: if (r->last) {
1.1 schwarze 1532: t = r->last->tok;
1.149 schwarze 1533: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1534: }
1535:
1.115 schwarze 1536: /* No scope is open. This is a new request or macro. */
1537:
1538: spos = pos;
1539: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1540:
1541: /* Tables ignore most macros. */
1542:
1.180 schwarze 1543: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1544: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.115 schwarze 1545: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1546: ln, pos, buf->buf + spos);
1.180 schwarze 1547: if (t != TOKEN_NONE)
1.149 schwarze 1548: return ROFF_IGN;
1.129 schwarze 1549: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1550: pos++;
1.163 schwarze 1551: while (buf->buf[pos] == ' ')
1.129 schwarze 1552: pos++;
1.193 schwarze 1553: tbl_read(r->tbl, ln, buf->buf, pos);
1554: roff_addtbl(r->man, r->tbl);
1555: return ROFF_IGN;
1.115 schwarze 1556: }
1557:
1.177 schwarze 1558: /* For now, let high level macros abort .ce mode. */
1559:
1560: if (ctl && roffce_node != NULL &&
1.196 schwarze 1561: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1562: t == ROFF_TH || t == ROFF_TS)) {
1.177 schwarze 1563: r->man->last = roffce_node;
1564: r->man->next = ROFF_NEXT_SIBLING;
1565: roffce_lines = 0;
1566: roffce_node = NULL;
1567: }
1568:
1.2 schwarze 1569: /*
1.115 schwarze 1570: * This is neither a roff request nor a user-defined macro.
1571: * Let the standard macro set parsers handle it.
1.2 schwarze 1572: */
1573:
1.166 schwarze 1574: if (t == TOKEN_NONE)
1.149 schwarze 1575: return ROFF_CONT;
1.115 schwarze 1576:
1577: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1578:
1.168 schwarze 1579: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1580: }
1581:
1.27 schwarze 1582: void
1.2 schwarze 1583: roff_endparse(struct roff *r)
1584: {
1.193 schwarze 1585: if (r->last != NULL)
1.94 schwarze 1586: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1587: r->last->line, r->last->col,
1.167 schwarze 1588: roff_name[r->last->tok]);
1.27 schwarze 1589:
1.193 schwarze 1590: if (r->eqn != NULL) {
1.94 schwarze 1591: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.191 schwarze 1592: r->eqn->node->line, r->eqn->node->pos, "EQ");
1593: eqn_parse(r->eqn);
1594: r->eqn = NULL;
1.32 schwarze 1595: }
1596:
1.193 schwarze 1597: if (r->tbl != NULL) {
1.94 schwarze 1598: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1599: r->tbl->line, r->tbl->pos, "TS");
1.193 schwarze 1600: tbl_end(r->tbl);
1601: r->tbl = NULL;
1.27 schwarze 1602: }
1.1 schwarze 1603: }
1604:
1605: /*
1606: * Parse a roff node's type from the input buffer. This must be in the
1607: * form of ".foo xxx" in the usual way.
1608: */
1.166 schwarze 1609: static enum roff_tok
1.87 schwarze 1610: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1611: {
1.87 schwarze 1612: char *cp;
1.16 schwarze 1613: const char *mac;
1614: size_t maclen;
1.187 schwarze 1615: int deftype;
1.166 schwarze 1616: enum roff_tok t;
1.1 schwarze 1617:
1.87 schwarze 1618: cp = buf + *pos;
1619:
1620: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1621: return TOKEN_NONE;
1.1 schwarze 1622:
1.87 schwarze 1623: mac = cp;
1624: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1625:
1.187 schwarze 1626: deftype = ROFFDEF_USER | ROFFDEF_REN;
1627: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1628: switch (deftype) {
1629: case ROFFDEF_USER:
1630: t = ROFF_USERDEF;
1631: break;
1632: case ROFFDEF_REN:
1633: t = ROFF_RENAMED;
1634: break;
1635: default:
1636: t = roffhash_find(r->reqtab, mac, maclen);
1637: break;
1638: }
1.166 schwarze 1639: if (t != TOKEN_NONE)
1.87 schwarze 1640: *pos = cp - buf;
1.197 ! schwarze 1641: else if (deftype == ROFFDEF_UNDEF) {
! 1642: /* Using an undefined macro defines it to be empty. */
! 1643: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
! 1644: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
! 1645: }
1.149 schwarze 1646: return t;
1.1 schwarze 1647: }
1648:
1.138 schwarze 1649: /* --- handling of request blocks ----------------------------------------- */
1650:
1.1 schwarze 1651: static enum rofferr
1.2 schwarze 1652: roff_cblock(ROFF_ARGS)
1.1 schwarze 1653: {
1654:
1.2 schwarze 1655: /*
1656: * A block-close `..' should only be invoked as a child of an
1657: * ignore macro, otherwise raise a warning and just ignore it.
1658: */
1659:
1.110 schwarze 1660: if (r->last == NULL) {
1.94 schwarze 1661: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1662: ln, ppos, "..");
1.149 schwarze 1663: return ROFF_IGN;
1.2 schwarze 1664: }
1.1 schwarze 1665:
1.2 schwarze 1666: switch (r->last->tok) {
1.80 schwarze 1667: case ROFF_am:
1.93 schwarze 1668: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1669: case ROFF_ami:
1670: case ROFF_de:
1.23 schwarze 1671: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1672: case ROFF_dei:
1673: case ROFF_ig:
1.2 schwarze 1674: break;
1675: default:
1.94 schwarze 1676: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1677: ln, ppos, "..");
1.149 schwarze 1678: return ROFF_IGN;
1.2 schwarze 1679: }
1680:
1.110 schwarze 1681: if (buf->buf[pos] != '\0')
1.90 schwarze 1682: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1683: ".. %s", buf->buf + pos);
1.2 schwarze 1684:
1685: roffnode_pop(r);
1686: roffnode_cleanscope(r);
1.149 schwarze 1687: return ROFF_IGN;
1.2 schwarze 1688:
1689: }
1.1 schwarze 1690:
1.2 schwarze 1691: static void
1692: roffnode_cleanscope(struct roff *r)
1693: {
1.1 schwarze 1694:
1.2 schwarze 1695: while (r->last) {
1.46 schwarze 1696: if (--r->last->endspan != 0)
1.2 schwarze 1697: break;
1698: roffnode_pop(r);
1699: }
1700: }
1.1 schwarze 1701:
1.68 schwarze 1702: static void
1703: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1704: {
1.1 schwarze 1705:
1.2 schwarze 1706: if (NULL == r->last) {
1.94 schwarze 1707: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1708: ln, ppos, "\\}");
1.68 schwarze 1709: return;
1.2 schwarze 1710: }
1.1 schwarze 1711:
1.2 schwarze 1712: switch (r->last->tok) {
1.80 schwarze 1713: case ROFF_el:
1714: case ROFF_ie:
1715: case ROFF_if:
1.2 schwarze 1716: break;
1717: default:
1.94 schwarze 1718: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1719: ln, ppos, "\\}");
1.68 schwarze 1720: return;
1.2 schwarze 1721: }
1.1 schwarze 1722:
1.2 schwarze 1723: if (r->last->endspan > -1) {
1.94 schwarze 1724: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1725: ln, ppos, "\\}");
1.68 schwarze 1726: return;
1.2 schwarze 1727: }
1728:
1729: roffnode_pop(r);
1730: roffnode_cleanscope(r);
1.68 schwarze 1731: return;
1.1 schwarze 1732: }
1733:
1734: static enum rofferr
1.2 schwarze 1735: roff_block(ROFF_ARGS)
1.1 schwarze 1736: {
1.187 schwarze 1737: const char *name, *value;
1738: char *call, *cp, *iname, *rname;
1739: size_t csz, namesz, rsz;
1740: int deftype;
1.16 schwarze 1741:
1.93 schwarze 1742: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1743:
1.110 schwarze 1744: if (tok == ROFF_de1)
1.93 schwarze 1745: tok = ROFF_de;
1.123 schwarze 1746: else if (tok == ROFF_dei1)
1747: tok = ROFF_dei;
1.110 schwarze 1748: else if (tok == ROFF_am1)
1.93 schwarze 1749: tok = ROFF_am;
1.123 schwarze 1750: else if (tok == ROFF_ami1)
1751: tok = ROFF_ami;
1.93 schwarze 1752:
1753: /* Parse the macro name argument. */
1754:
1.110 schwarze 1755: cp = buf->buf + pos;
1756: if (tok == ROFF_ig) {
1.93 schwarze 1757: iname = NULL;
1758: namesz = 0;
1759: } else {
1760: iname = cp;
1761: namesz = roff_getname(r, &cp, ln, ppos);
1762: iname[namesz] = '\0';
1763: }
1.22 schwarze 1764:
1.93 schwarze 1765: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1766:
1.110 schwarze 1767: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1768: deftype = ROFFDEF_USER;
1769: name = roff_getstrn(r, iname, namesz, &deftype);
1770: if (name == NULL) {
1.93 schwarze 1771: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1772: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1773: "%.*s", (int)namesz, iname);
1774: namesz = 0;
1775: } else
1776: namesz = strlen(name);
1777: } else
1778: name = iname;
1.22 schwarze 1779:
1.110 schwarze 1780: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1781: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1782: ln, ppos, roff_name[tok]);
1.149 schwarze 1783: return ROFF_IGN;
1.93 schwarze 1784: }
1.2 schwarze 1785:
1.16 schwarze 1786: roffnode_push(r, tok, name, ln, ppos);
1787:
1788: /*
1789: * At the beginning of a `de' macro, clear the existing string
1790: * with the same name, if there is one. New content will be
1.66 schwarze 1791: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1792: */
1.22 schwarze 1793:
1.183 schwarze 1794: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 1795: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 1796: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 1797: } else if (tok == ROFF_am || tok == ROFF_ami) {
1798: deftype = ROFFDEF_ANY;
1799: value = roff_getstrn(r, iname, namesz, &deftype);
1800: switch (deftype) { /* Before appending, ... */
1801: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1802: roff_setstrn(&r->strtab, name, namesz,
1803: value, strlen(value), 0);
1804: break;
1805: case ROFFDEF_REN: /* call original standard macro. */
1806: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1807: (int)strlen(value), value);
1808: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1809: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1810: free(call);
1811: break;
1812: case ROFFDEF_STD: /* rename and call standard macro. */
1813: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1814: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1815: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1816: (int)rsz, rname);
1817: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1818: free(call);
1819: free(rname);
1820: break;
1821: default:
1822: break;
1823: }
1.183 schwarze 1824: }
1.2 schwarze 1825:
1.110 schwarze 1826: if (*cp == '\0')
1.149 schwarze 1827: return ROFF_IGN;
1.1 schwarze 1828:
1.93 schwarze 1829: /* Get the custom end marker. */
1.22 schwarze 1830:
1.93 schwarze 1831: iname = cp;
1.86 schwarze 1832: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1833:
1834: /* Resolve the end marker if it is indirect. */
1835:
1.110 schwarze 1836: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1837: deftype = ROFFDEF_USER;
1838: name = roff_getstrn(r, iname, namesz, &deftype);
1839: if (name == NULL) {
1.93 schwarze 1840: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1841: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1842: "%.*s", (int)namesz, iname);
1843: namesz = 0;
1844: } else
1845: namesz = strlen(name);
1846: } else
1847: name = iname;
1848:
1.86 schwarze 1849: if (namesz)
1850: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1851:
1.110 schwarze 1852: if (*cp != '\0')
1.90 schwarze 1853: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 1854: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 1855:
1.149 schwarze 1856: return ROFF_IGN;
1.1 schwarze 1857: }
1858:
1859: static enum rofferr
1.2 schwarze 1860: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1861: {
1.166 schwarze 1862: enum roff_tok t;
1.2 schwarze 1863: int i, j;
1864:
1865: /*
1866: * First check whether a custom macro exists at this level. If
1867: * it does, then check against it. This is some of groff's
1868: * stranger behaviours. If we encountered a custom end-scope
1869: * tag and that tag also happens to be a "real" macro, then we
1870: * need to try interpreting it again as a real macro. If it's
1871: * not, then return ignore. Else continue.
1872: */
1873:
1874: if (r->last->end) {
1.35 schwarze 1875: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1876: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1877: break;
1.1 schwarze 1878:
1.110 schwarze 1879: if (r->last->end[j] == '\0' &&
1880: (buf->buf[i] == '\0' ||
1881: buf->buf[i] == ' ' ||
1882: buf->buf[i] == '\t')) {
1.2 schwarze 1883: roffnode_pop(r);
1884: roffnode_cleanscope(r);
1.1 schwarze 1885:
1.110 schwarze 1886: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1887: i++;
1888:
1889: pos = i;
1.110 schwarze 1890: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 1891: TOKEN_NONE)
1.149 schwarze 1892: return ROFF_RERUN;
1893: return ROFF_IGN;
1.2 schwarze 1894: }
1.1 schwarze 1895: }
1896:
1.2 schwarze 1897: /*
1898: * If we have no custom end-query or lookup failed, then try
1899: * pulling it out of the hashtable.
1900: */
1.1 schwarze 1901:
1.110 schwarze 1902: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1903:
1.110 schwarze 1904: if (t != ROFF_cblock) {
1905: if (tok != ROFF_ig)
1906: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1907: return ROFF_IGN;
1.16 schwarze 1908: }
1.1 schwarze 1909:
1.149 schwarze 1910: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1911: }
1912:
1913: static enum rofferr
1914: roff_block_text(ROFF_ARGS)
1915: {
1916:
1.110 schwarze 1917: if (tok != ROFF_ig)
1918: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1919:
1.149 schwarze 1920: return ROFF_IGN;
1.2 schwarze 1921: }
1922:
1923: static enum rofferr
1924: roff_cond_sub(ROFF_ARGS)
1925: {
1.166 schwarze 1926: enum roff_tok t;
1.37 schwarze 1927: char *ep;
1.71 schwarze 1928: int rr;
1.2 schwarze 1929:
1930: rr = r->last->rule;
1.37 schwarze 1931: roffnode_cleanscope(r);
1.39 schwarze 1932:
1.69 schwarze 1933: /*
1934: * If `\}' occurs on a macro line without a preceding macro,
1935: * drop the line completely.
1936: */
1937:
1.110 schwarze 1938: ep = buf->buf + pos;
1939: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1940: rr = 0;
1.69 schwarze 1941:
1.50 schwarze 1942: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1943:
1.110 schwarze 1944: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 1945: switch (ep[1]) {
1946: case '}':
1947: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1948: roff_ccond(r, ln, ep - buf->buf);
1949: break;
1950: case '\0':
1951: ++ep;
1952: break;
1953: default:
1954: ep += 2;
1955: break;
1.70 schwarze 1956: }
1.50 schwarze 1957: }
1.190 schwarze 1958:
1959: /*
1960: * Fully handle known macros when they are structurally
1961: * required or when the conditional evaluated to true.
1962: */
1963:
1964: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1965: return t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT)
1966: ? (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) : rr
1967: ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1968: }
1969:
1970: static enum rofferr
1971: roff_cond_text(ROFF_ARGS)
1972: {
1.37 schwarze 1973: char *ep;
1.71 schwarze 1974: int rr;
1.2 schwarze 1975:
1976: rr = r->last->rule;
1.37 schwarze 1977: roffnode_cleanscope(r);
1.1 schwarze 1978:
1.110 schwarze 1979: ep = buf->buf + pos;
1980: while ((ep = strchr(ep, '\\')) != NULL) {
1981: if (*(++ep) == '}') {
1.70 schwarze 1982: *ep = '&';
1.110 schwarze 1983: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1984: }
1.119 schwarze 1985: if (*ep != '\0')
1986: ++ep;
1.2 schwarze 1987: }
1.149 schwarze 1988: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1989: }
1990:
1.138 schwarze 1991: /* --- handling of numeric and conditional expressions -------------------- */
1992:
1.77 schwarze 1993: /*
1994: * Parse a single signed integer number. Stop at the first non-digit.
1995: * If there is at least one digit, return success and advance the
1996: * parse point, else return failure and let the parse point unchanged.
1997: * Ignore overflows, treat them just like the C language.
1998: */
1.56 schwarze 1999: static int
1.133 schwarze 2000: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2001: {
1.133 schwarze 2002: int myres, scaled, n, p;
1.79 schwarze 2003:
2004: if (NULL == res)
2005: res = &myres;
1.56 schwarze 2006:
2007: p = *pos;
2008: n = v[p] == '-';
1.133 schwarze 2009: if (n || v[p] == '+')
1.56 schwarze 2010: p++;
2011:
1.133 schwarze 2012: if (flags & ROFFNUM_WHITE)
2013: while (isspace((unsigned char)v[p]))
2014: p++;
2015:
1.56 schwarze 2016: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2017: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2018: if (p == *pos + n)
2019: return 0;
2020:
2021: if (n)
2022: *res = -*res;
2023:
1.126 schwarze 2024: /* Each number may be followed by one optional scaling unit. */
2025:
2026: switch (v[p]) {
2027: case 'f':
1.133 schwarze 2028: scaled = *res * 65536;
1.126 schwarze 2029: break;
2030: case 'i':
1.133 schwarze 2031: scaled = *res * 240;
1.126 schwarze 2032: break;
2033: case 'c':
1.133 schwarze 2034: scaled = *res * 240 / 2.54;
1.126 schwarze 2035: break;
2036: case 'v':
2037: case 'P':
1.133 schwarze 2038: scaled = *res * 40;
1.126 schwarze 2039: break;
2040: case 'm':
2041: case 'n':
1.133 schwarze 2042: scaled = *res * 24;
1.126 schwarze 2043: break;
2044: case 'p':
1.133 schwarze 2045: scaled = *res * 10 / 3;
1.126 schwarze 2046: break;
2047: case 'u':
1.133 schwarze 2048: scaled = *res;
1.126 schwarze 2049: break;
2050: case 'M':
1.133 schwarze 2051: scaled = *res * 6 / 25;
1.126 schwarze 2052: break;
2053: default:
1.133 schwarze 2054: scaled = *res;
1.126 schwarze 2055: p--;
2056: break;
2057: }
1.133 schwarze 2058: if (flags & ROFFNUM_SCALE)
2059: *res = scaled;
1.126 schwarze 2060:
2061: *pos = p + 1;
1.149 schwarze 2062: return 1;
1.56 schwarze 2063: }
2064:
1.71 schwarze 2065: /*
2066: * Evaluate a string comparison condition.
2067: * The first character is the delimiter.
2068: * Succeed if the string up to its second occurrence
2069: * matches the string up to its third occurence.
2070: * Advance the cursor after the third occurrence
2071: * or lacking that, to the end of the line.
2072: */
2073: static int
2074: roff_evalstrcond(const char *v, int *pos)
2075: {
2076: const char *s1, *s2, *s3;
2077: int match;
2078:
2079: match = 0;
2080: s1 = v + *pos; /* initial delimiter */
2081: s2 = s1 + 1; /* for scanning the first string */
2082: s3 = strchr(s2, *s1); /* for scanning the second string */
2083:
2084: if (NULL == s3) /* found no middle delimiter */
2085: goto out;
2086:
2087: while ('\0' != *++s3) {
2088: if (*s2 != *s3) { /* mismatch */
2089: s3 = strchr(s3, *s1);
2090: break;
2091: }
2092: if (*s3 == *s1) { /* found the final delimiter */
2093: match = 1;
2094: break;
2095: }
2096: s2++;
2097: }
2098:
2099: out:
2100: if (NULL == s3)
2101: s3 = strchr(s2, '\0');
1.114 schwarze 2102: else if (*s3 != '\0')
1.71 schwarze 2103: s3++;
2104: *pos = s3 - v;
1.149 schwarze 2105: return match;
1.71 schwarze 2106: }
2107:
1.77 schwarze 2108: /*
2109: * Evaluate an optionally negated single character, numerical,
2110: * or string condition.
2111: */
1.71 schwarze 2112: static int
1.143 schwarze 2113: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2114: {
1.143 schwarze 2115: char *cp, *name;
2116: size_t sz;
1.187 schwarze 2117: int deftype, number, savepos, istrue, wanttrue;
1.5 schwarze 2118:
1.71 schwarze 2119: if ('!' == v[*pos]) {
2120: wanttrue = 0;
2121: (*pos)++;
2122: } else
2123: wanttrue = 1;
2124:
1.5 schwarze 2125: switch (v[*pos]) {
1.112 schwarze 2126: case '\0':
1.149 schwarze 2127: return 0;
1.80 schwarze 2128: case 'n':
2129: case 'o':
1.5 schwarze 2130: (*pos)++;
1.149 schwarze 2131: return wanttrue;
1.80 schwarze 2132: case 'c':
2133: case 'e':
2134: case 't':
1.111 schwarze 2135: case 'v':
1.5 schwarze 2136: (*pos)++;
1.149 schwarze 2137: return !wanttrue;
1.182 schwarze 2138: case 'd':
1.143 schwarze 2139: case 'r':
1.182 schwarze 2140: cp = v + *pos + 1;
2141: while (*cp == ' ')
2142: cp++;
2143: name = cp;
2144: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2145: if (sz == 0)
2146: istrue = 0;
2147: else if (v[*pos] == 'r')
2148: istrue = roff_hasregn(r, name, sz);
2149: else {
2150: deftype = ROFFDEF_ANY;
2151: roff_getstrn(r, name, sz, &deftype);
2152: istrue = !!deftype;
2153: }
1.143 schwarze 2154: *pos = cp - v;
1.182 schwarze 2155: return istrue == wanttrue;
1.5 schwarze 2156: default:
2157: break;
2158: }
2159:
1.113 schwarze 2160: savepos = *pos;
1.133 schwarze 2161: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2162: return (number > 0) == wanttrue;
1.113 schwarze 2163: else if (*pos == savepos)
1.149 schwarze 2164: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2165: else
1.149 schwarze 2166: return 0;
1.5 schwarze 2167: }
2168:
1.2 schwarze 2169: static enum rofferr
1.21 schwarze 2170: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2171: {
1.30 schwarze 2172:
1.149 schwarze 2173: return ROFF_IGN;
1.21 schwarze 2174: }
2175:
2176: static enum rofferr
1.123 schwarze 2177: roff_insec(ROFF_ARGS)
2178: {
2179:
2180: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2181: ln, ppos, roff_name[tok]);
1.149 schwarze 2182: return ROFF_IGN;
1.123 schwarze 2183: }
2184:
2185: static enum rofferr
2186: roff_unsupp(ROFF_ARGS)
2187: {
2188:
2189: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2190: ln, ppos, roff_name[tok]);
1.149 schwarze 2191: return ROFF_IGN;
1.123 schwarze 2192: }
2193:
2194: static enum rofferr
1.2 schwarze 2195: roff_cond(ROFF_ARGS)
2196: {
1.46 schwarze 2197:
2198: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2199:
1.80 schwarze 2200: /*
1.35 schwarze 2201: * An `.el' has no conditional body: it will consume the value
2202: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2203: * defaults to DENY.
1.35 schwarze 2204: *
2205: * If we're not an `el', however, then evaluate the conditional.
2206: */
1.1 schwarze 2207:
1.110 schwarze 2208: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2209: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2210: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2211:
1.35 schwarze 2212: /*
2213: * An if-else will put the NEGATION of the current evaluated
2214: * conditional into the stack of rules.
2215: */
2216:
1.110 schwarze 2217: if (tok == ROFF_ie) {
1.96 schwarze 2218: if (r->rstackpos + 1 == r->rstacksz) {
2219: r->rstacksz += 16;
2220: r->rstack = mandoc_reallocarray(r->rstack,
2221: r->rstacksz, sizeof(int));
1.35 schwarze 2222: }
1.71 schwarze 2223: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2224: }
1.5 schwarze 2225:
2226: /* If the parent has false as its rule, then so do we. */
2227:
1.71 schwarze 2228: if (r->last->parent && !r->last->parent->rule)
2229: r->last->rule = 0;
1.5 schwarze 2230:
2231: /*
1.46 schwarze 2232: * Determine scope.
2233: * If there is nothing on the line after the conditional,
2234: * not even whitespace, use next-line scope.
1.5 schwarze 2235: */
1.2 schwarze 2236:
1.110 schwarze 2237: if (buf->buf[pos] == '\0') {
1.46 schwarze 2238: r->last->endspan = 2;
2239: goto out;
2240: }
2241:
1.110 schwarze 2242: while (buf->buf[pos] == ' ')
1.46 schwarze 2243: pos++;
2244:
2245: /* An opening brace requests multiline scope. */
1.2 schwarze 2246:
1.110 schwarze 2247: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2248: r->last->endspan = -1;
2249: pos += 2;
1.144 schwarze 2250: while (buf->buf[pos] == ' ')
2251: pos++;
1.46 schwarze 2252: goto out;
1.80 schwarze 2253: }
1.2 schwarze 2254:
2255: /*
1.46 schwarze 2256: * Anything else following the conditional causes
2257: * single-line scope. Warn if the scope contains
2258: * nothing but trailing whitespace.
1.2 schwarze 2259: */
2260:
1.110 schwarze 2261: if (buf->buf[pos] == '\0')
1.89 schwarze 2262: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2263: ln, ppos, roff_name[tok]);
1.2 schwarze 2264:
1.46 schwarze 2265: r->last->endspan = 1;
1.1 schwarze 2266:
1.46 schwarze 2267: out:
1.2 schwarze 2268: *offs = pos;
1.149 schwarze 2269: return ROFF_RERUN;
1.1 schwarze 2270: }
2271:
1.2 schwarze 2272: static enum rofferr
1.7 schwarze 2273: roff_ds(ROFF_ARGS)
2274: {
1.85 schwarze 2275: char *string;
2276: const char *name;
2277: size_t namesz;
1.10 schwarze 2278:
1.123 schwarze 2279: /* Ignore groff compatibility mode for now. */
2280:
2281: if (tok == ROFF_ds1)
2282: tok = ROFF_ds;
2283: else if (tok == ROFF_as1)
2284: tok = ROFF_as;
2285:
1.10 schwarze 2286: /*
1.85 schwarze 2287: * The first word is the name of the string.
2288: * If it is empty or terminated by an escape sequence,
2289: * abort the `ds' request without defining anything.
1.10 schwarze 2290: */
1.7 schwarze 2291:
1.110 schwarze 2292: name = string = buf->buf + pos;
2293: if (*name == '\0')
1.149 schwarze 2294: return ROFF_IGN;
1.7 schwarze 2295:
1.85 schwarze 2296: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2297: if (name[namesz] == '\\')
1.149 schwarze 2298: return ROFF_IGN;
1.85 schwarze 2299:
2300: /* Read past the initial double-quote, if any. */
1.110 schwarze 2301: if (*string == '"')
1.7 schwarze 2302: string++;
2303:
1.10 schwarze 2304: /* The rest is the value. */
1.85 schwarze 2305: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2306: ROFF_as == tok);
1.183 schwarze 2307: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2308: return ROFF_IGN;
1.7 schwarze 2309: }
2310:
1.77 schwarze 2311: /*
2312: * Parse a single operator, one or two characters long.
2313: * If the operator is recognized, return success and advance the
2314: * parse point, else return failure and let the parse point unchanged.
2315: */
2316: static int
2317: roff_getop(const char *v, int *pos, char *res)
2318: {
2319:
2320: *res = v[*pos];
2321:
2322: switch (*res) {
1.80 schwarze 2323: case '+':
2324: case '-':
2325: case '*':
2326: case '/':
2327: case '%':
2328: case '&':
2329: case ':':
1.77 schwarze 2330: break;
2331: case '<':
2332: switch (v[*pos + 1]) {
1.80 schwarze 2333: case '=':
1.77 schwarze 2334: *res = 'l';
2335: (*pos)++;
2336: break;
1.80 schwarze 2337: case '>':
1.77 schwarze 2338: *res = '!';
2339: (*pos)++;
2340: break;
1.80 schwarze 2341: case '?':
1.77 schwarze 2342: *res = 'i';
2343: (*pos)++;
2344: break;
2345: default:
2346: break;
2347: }
2348: break;
2349: case '>':
2350: switch (v[*pos + 1]) {
1.80 schwarze 2351: case '=':
1.77 schwarze 2352: *res = 'g';
2353: (*pos)++;
2354: break;
1.80 schwarze 2355: case '?':
1.77 schwarze 2356: *res = 'a';
2357: (*pos)++;
2358: break;
2359: default:
2360: break;
2361: }
2362: break;
2363: case '=':
2364: if ('=' == v[*pos + 1])
2365: (*pos)++;
2366: break;
2367: default:
1.149 schwarze 2368: return 0;
1.77 schwarze 2369: }
2370: (*pos)++;
2371:
1.149 schwarze 2372: return *res;
1.77 schwarze 2373: }
2374:
2375: /*
2376: * Evaluate either a parenthesized numeric expression
2377: * or a single signed integer number.
2378: */
2379: static int
1.106 schwarze 2380: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2381: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2382: {
2383:
2384: if ('(' != v[*pos])
1.149 schwarze 2385: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2386:
2387: (*pos)++;
1.133 schwarze 2388: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2389: return 0;
1.77 schwarze 2390:
1.79 schwarze 2391: /*
2392: * Omission of the closing parenthesis
2393: * is an error in validation mode,
2394: * but ignored in evaluation mode.
2395: */
2396:
1.77 schwarze 2397: if (')' == v[*pos])
2398: (*pos)++;
1.79 schwarze 2399: else if (NULL == res)
1.149 schwarze 2400: return 0;
1.77 schwarze 2401:
1.149 schwarze 2402: return 1;
1.77 schwarze 2403: }
2404:
2405: /*
2406: * Evaluate a complete numeric expression.
2407: * Proceed left to right, there is no concept of precedence.
2408: */
2409: static int
1.106 schwarze 2410: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2411: int *pos, int *res, int flags)
1.77 schwarze 2412: {
2413: int mypos, operand2;
2414: char operator;
2415:
2416: if (NULL == pos) {
2417: mypos = 0;
2418: pos = &mypos;
2419: }
2420:
1.133 schwarze 2421: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2422: while (isspace((unsigned char)v[*pos]))
2423: (*pos)++;
2424:
1.133 schwarze 2425: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2426: return 0;
1.77 schwarze 2427:
2428: while (1) {
1.133 schwarze 2429: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2430: while (isspace((unsigned char)v[*pos]))
2431: (*pos)++;
2432:
2433: if ( ! roff_getop(v, pos, &operator))
2434: break;
2435:
1.133 schwarze 2436: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2437: while (isspace((unsigned char)v[*pos]))
2438: (*pos)++;
2439:
1.133 schwarze 2440: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2441: return 0;
1.77 schwarze 2442:
1.133 schwarze 2443: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2444: while (isspace((unsigned char)v[*pos]))
2445: (*pos)++;
1.79 schwarze 2446:
2447: if (NULL == res)
2448: continue;
1.77 schwarze 2449:
2450: switch (operator) {
1.80 schwarze 2451: case '+':
1.77 schwarze 2452: *res += operand2;
2453: break;
1.80 schwarze 2454: case '-':
1.77 schwarze 2455: *res -= operand2;
2456: break;
1.80 schwarze 2457: case '*':
1.77 schwarze 2458: *res *= operand2;
2459: break;
1.80 schwarze 2460: case '/':
1.116 schwarze 2461: if (operand2 == 0) {
1.106 schwarze 2462: mandoc_msg(MANDOCERR_DIVZERO,
2463: r->parse, ln, *pos, v);
2464: *res = 0;
2465: break;
2466: }
1.77 schwarze 2467: *res /= operand2;
2468: break;
1.80 schwarze 2469: case '%':
1.116 schwarze 2470: if (operand2 == 0) {
2471: mandoc_msg(MANDOCERR_DIVZERO,
2472: r->parse, ln, *pos, v);
2473: *res = 0;
2474: break;
2475: }
1.77 schwarze 2476: *res %= operand2;
2477: break;
1.80 schwarze 2478: case '<':
1.77 schwarze 2479: *res = *res < operand2;
2480: break;
1.80 schwarze 2481: case '>':
1.77 schwarze 2482: *res = *res > operand2;
2483: break;
1.80 schwarze 2484: case 'l':
1.77 schwarze 2485: *res = *res <= operand2;
2486: break;
1.80 schwarze 2487: case 'g':
1.77 schwarze 2488: *res = *res >= operand2;
2489: break;
1.80 schwarze 2490: case '=':
1.77 schwarze 2491: *res = *res == operand2;
2492: break;
1.80 schwarze 2493: case '!':
1.77 schwarze 2494: *res = *res != operand2;
2495: break;
1.80 schwarze 2496: case '&':
1.77 schwarze 2497: *res = *res && operand2;
2498: break;
1.80 schwarze 2499: case ':':
1.77 schwarze 2500: *res = *res || operand2;
2501: break;
1.80 schwarze 2502: case 'i':
1.77 schwarze 2503: if (operand2 < *res)
2504: *res = operand2;
2505: break;
1.80 schwarze 2506: case 'a':
1.77 schwarze 2507: if (operand2 > *res)
2508: *res = operand2;
2509: break;
2510: default:
2511: abort();
2512: }
2513: }
1.149 schwarze 2514: return 1;
1.77 schwarze 2515: }
2516:
1.138 schwarze 2517: /* --- register management ------------------------------------------------ */
2518:
1.52 schwarze 2519: void
1.60 schwarze 2520: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2521: {
1.52 schwarze 2522: struct roffreg *reg;
2523:
2524: /* Search for an existing register with the same name. */
2525: reg = r->regtab;
2526:
2527: while (reg && strcmp(name, reg->key.p))
2528: reg = reg->next;
1.41 schwarze 2529:
1.52 schwarze 2530: if (NULL == reg) {
2531: /* Create a new register. */
2532: reg = mandoc_malloc(sizeof(struct roffreg));
2533: reg->key.p = mandoc_strdup(name);
2534: reg->key.sz = strlen(name);
1.60 schwarze 2535: reg->val = 0;
1.52 schwarze 2536: reg->next = r->regtab;
2537: r->regtab = reg;
2538: }
2539:
1.60 schwarze 2540: if ('+' == sign)
2541: reg->val += val;
2542: else if ('-' == sign)
2543: reg->val -= val;
2544: else
2545: reg->val = val;
1.41 schwarze 2546: }
2547:
1.65 schwarze 2548: /*
2549: * Handle some predefined read-only number registers.
2550: * For now, return -1 if the requested register is not predefined;
2551: * in case a predefined read-only register having the value -1
2552: * were to turn up, another special value would have to be chosen.
2553: */
2554: static int
1.145 schwarze 2555: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2556: {
2557:
2558: switch (*name) {
1.145 schwarze 2559: case '$': /* Number of arguments of the last macro evaluated. */
1.149 schwarze 2560: return r->argc;
1.80 schwarze 2561: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2562: return 0;
1.80 schwarze 2563: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2564: return 1;
1.80 schwarze 2565: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2566: return 24;
1.80 schwarze 2567: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2568: return 0;
1.80 schwarze 2569: case 'T': /* Some output device is always defined. */
1.149 schwarze 2570: return 1;
1.80 schwarze 2571: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2572: return 40;
1.65 schwarze 2573: default:
1.149 schwarze 2574: return -1;
1.65 schwarze 2575: }
2576: }
2577:
1.53 schwarze 2578: int
1.52 schwarze 2579: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2580: {
1.52 schwarze 2581: struct roffreg *reg;
1.65 schwarze 2582: int val;
2583:
2584: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.145 schwarze 2585: val = roff_getregro(r, name + 1);
1.65 schwarze 2586: if (-1 != val)
1.149 schwarze 2587: return val;
1.65 schwarze 2588: }
1.52 schwarze 2589:
2590: for (reg = r->regtab; reg; reg = reg->next)
2591: if (0 == strcmp(name, reg->key.p))
1.149 schwarze 2592: return reg->val;
1.53 schwarze 2593:
1.149 schwarze 2594: return 0;
1.53 schwarze 2595: }
2596:
2597: static int
2598: roff_getregn(const struct roff *r, const char *name, size_t len)
2599: {
2600: struct roffreg *reg;
1.65 schwarze 2601: int val;
2602:
2603: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2604: val = roff_getregro(r, name + 1);
1.65 schwarze 2605: if (-1 != val)
1.149 schwarze 2606: return val;
1.65 schwarze 2607: }
1.53 schwarze 2608:
2609: for (reg = r->regtab; reg; reg = reg->next)
2610: if (len == reg->key.sz &&
2611: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2612: return reg->val;
1.143 schwarze 2613:
1.149 schwarze 2614: return 0;
1.143 schwarze 2615: }
2616:
2617: static int
2618: roff_hasregn(const struct roff *r, const char *name, size_t len)
2619: {
2620: struct roffreg *reg;
2621: int val;
2622:
2623: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2624: val = roff_getregro(r, name + 1);
1.143 schwarze 2625: if (-1 != val)
1.149 schwarze 2626: return 1;
1.143 schwarze 2627: }
2628:
2629: for (reg = r->regtab; reg; reg = reg->next)
2630: if (len == reg->key.sz &&
2631: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2632: return 1;
1.41 schwarze 2633:
1.149 schwarze 2634: return 0;
1.41 schwarze 2635: }
2636:
1.52 schwarze 2637: static void
2638: roff_freereg(struct roffreg *reg)
1.41 schwarze 2639: {
1.52 schwarze 2640: struct roffreg *old_reg;
1.41 schwarze 2641:
1.52 schwarze 2642: while (NULL != reg) {
2643: free(reg->key.p);
2644: old_reg = reg;
2645: reg = reg->next;
2646: free(old_reg);
2647: }
1.41 schwarze 2648: }
1.7 schwarze 2649:
2650: static enum rofferr
1.6 schwarze 2651: roff_nr(ROFF_ARGS)
1.1 schwarze 2652: {
1.85 schwarze 2653: char *key, *val;
2654: size_t keysz;
1.37 schwarze 2655: int iv;
1.60 schwarze 2656: char sign;
1.6 schwarze 2657:
1.110 schwarze 2658: key = val = buf->buf + pos;
2659: if (*key == '\0')
1.149 schwarze 2660: return ROFF_IGN;
1.85 schwarze 2661:
2662: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2663: if (key[keysz] == '\\')
1.149 schwarze 2664: return ROFF_IGN;
1.85 schwarze 2665: key[keysz] = '\0';
1.6 schwarze 2666:
1.60 schwarze 2667: sign = *val;
1.110 schwarze 2668: if (sign == '+' || sign == '-')
1.60 schwarze 2669: val++;
2670:
1.133 schwarze 2671: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2672: roff_setreg(r, key, iv, sign);
1.1 schwarze 2673:
1.149 schwarze 2674: return ROFF_IGN;
1.76 schwarze 2675: }
2676:
2677: static enum rofferr
2678: roff_rr(ROFF_ARGS)
2679: {
2680: struct roffreg *reg, **prev;
1.85 schwarze 2681: char *name, *cp;
2682: size_t namesz;
1.76 schwarze 2683:
1.110 schwarze 2684: name = cp = buf->buf + pos;
2685: if (*name == '\0')
1.149 schwarze 2686: return ROFF_IGN;
1.85 schwarze 2687: namesz = roff_getname(r, &cp, ln, pos);
2688: name[namesz] = '\0';
1.76 schwarze 2689:
2690: prev = &r->regtab;
2691: while (1) {
2692: reg = *prev;
1.110 schwarze 2693: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2694: break;
2695: prev = ®->next;
2696: }
1.110 schwarze 2697: if (reg != NULL) {
1.76 schwarze 2698: *prev = reg->next;
2699: free(reg->key.p);
2700: free(reg);
2701: }
1.149 schwarze 2702: return ROFF_IGN;
1.29 schwarze 2703: }
2704:
1.138 schwarze 2705: /* --- handler functions for roff requests -------------------------------- */
2706:
1.29 schwarze 2707: static enum rofferr
2708: roff_rm(ROFF_ARGS)
2709: {
2710: const char *name;
2711: char *cp;
1.85 schwarze 2712: size_t namesz;
1.29 schwarze 2713:
1.110 schwarze 2714: cp = buf->buf + pos;
2715: while (*cp != '\0') {
1.85 schwarze 2716: name = cp;
1.110 schwarze 2717: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2718: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 2719: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 2720: if (name[namesz] == '\\')
1.85 schwarze 2721: break;
1.29 schwarze 2722: }
1.149 schwarze 2723: return ROFF_IGN;
1.51 schwarze 2724: }
2725:
2726: static enum rofferr
2727: roff_it(ROFF_ARGS)
2728: {
2729: int iv;
2730:
2731: /* Parse the number of lines. */
1.133 schwarze 2732:
2733: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2734: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2735: ln, ppos, buf->buf + 1);
1.149 schwarze 2736: return ROFF_IGN;
1.51 schwarze 2737: }
2738:
1.134 schwarze 2739: while (isspace((unsigned char)buf->buf[pos]))
2740: pos++;
2741:
2742: /*
2743: * Arm the input line trap.
2744: * Special-casing "an-trap" is an ugly workaround to cope
2745: * with DocBook stupidly fiddling with man(7) internals.
2746: */
1.133 schwarze 2747:
1.51 schwarze 2748: roffit_lines = iv;
1.134 schwarze 2749: roffit_macro = mandoc_strdup(iv != 1 ||
2750: strcmp(buf->buf + pos, "an-trap") ?
2751: buf->buf + pos : "br");
1.149 schwarze 2752: return ROFF_IGN;
1.47 schwarze 2753: }
2754:
2755: static enum rofferr
2756: roff_Dd(ROFF_ARGS)
2757: {
1.187 schwarze 2758: int mask;
2759: enum roff_tok t, te;
1.99 schwarze 2760:
1.187 schwarze 2761: switch (tok) {
2762: case ROFF_Dd:
2763: tok = MDOC_Dd;
2764: te = MDOC_MAX;
2765: if (r->format == 0)
2766: r->format = MPARSE_MDOC;
2767: mask = MPARSE_MDOC | MPARSE_QUICK;
2768: break;
2769: case ROFF_TH:
2770: tok = MAN_TH;
2771: te = MAN_MAX;
2772: if (r->format == 0)
2773: r->format = MPARSE_MAN;
2774: mask = MPARSE_QUICK;
2775: break;
2776: default:
2777: abort();
2778: }
2779: if ((r->options & mask) == 0)
2780: for (t = tok; t < te; t++)
2781: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 2782: return ROFF_CONT;
1.14 schwarze 2783: }
2784:
2785: static enum rofferr
1.27 schwarze 2786: roff_TE(ROFF_ARGS)
2787: {
1.193 schwarze 2788: if (r->tbl == NULL) {
1.94 schwarze 2789: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2790: ln, ppos, "TE");
1.193 schwarze 2791: return ROFF_IGN;
2792: }
2793: if (tbl_end(r->tbl) == 0) {
2794: r->tbl = NULL;
1.130 schwarze 2795: free(buf->buf);
2796: buf->buf = mandoc_strdup(".sp");
2797: buf->sz = 4;
1.149 schwarze 2798: return ROFF_REPARSE;
1.130 schwarze 2799: }
1.193 schwarze 2800: r->tbl = NULL;
1.149 schwarze 2801: return ROFF_IGN;
1.27 schwarze 2802: }
2803:
2804: static enum rofferr
2805: roff_T_(ROFF_ARGS)
2806: {
2807:
2808: if (NULL == r->tbl)
1.94 schwarze 2809: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2810: ln, ppos, "T&");
1.27 schwarze 2811: else
1.168 schwarze 2812: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 2813:
1.149 schwarze 2814: return ROFF_IGN;
1.27 schwarze 2815: }
2816:
1.102 schwarze 2817: /*
2818: * Handle in-line equation delimiters.
2819: */
2820: static enum rofferr
1.110 schwarze 2821: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2822: {
1.105 schwarze 2823: char *cp1, *cp2;
2824: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2825:
1.102 schwarze 2826: /*
2827: * Outside equations, look for an opening delimiter.
2828: * If we are inside an equation, we already know it is
2829: * in-line, or this function wouldn't have been called;
2830: * so look for a closing delimiter.
2831: */
2832:
1.110 schwarze 2833: cp1 = buf->buf + pos;
1.102 schwarze 2834: cp2 = strchr(cp1, r->eqn == NULL ?
2835: r->last_eqn->odelim : r->last_eqn->cdelim);
2836: if (cp2 == NULL)
1.149 schwarze 2837: return ROFF_CONT;
1.102 schwarze 2838:
1.105 schwarze 2839: *cp2++ = '\0';
2840: bef_pr = bef_nl = aft_nl = aft_pr = "";
2841:
2842: /* Handle preceding text, protecting whitespace. */
2843:
1.110 schwarze 2844: if (*buf->buf != '\0') {
1.105 schwarze 2845: if (r->eqn == NULL)
2846: bef_pr = "\\&";
2847: bef_nl = "\n";
2848: }
2849:
2850: /*
2851: * Prepare replacing the delimiter with an equation macro
2852: * and drop leading white space from the equation.
2853: */
1.102 schwarze 2854:
1.105 schwarze 2855: if (r->eqn == NULL) {
2856: while (*cp2 == ' ')
2857: cp2++;
2858: mac = ".EQ";
2859: } else
2860: mac = ".EN";
2861:
2862: /* Handle following text, protecting whitespace. */
2863:
2864: if (*cp2 != '\0') {
2865: aft_nl = "\n";
2866: if (r->eqn != NULL)
2867: aft_pr = "\\&";
2868: }
2869:
2870: /* Do the actual replacement. */
2871:
1.110 schwarze 2872: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2873: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2874: free(buf->buf);
2875: buf->buf = cp1;
1.102 schwarze 2876:
2877: /* Toggle the in-line state of the eqn subsystem. */
2878:
2879: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2880: return ROFF_REPARSE;
1.41 schwarze 2881: }
2882:
1.107 schwarze 2883: static enum rofferr
2884: roff_EQ(ROFF_ARGS)
1.32 schwarze 2885: {
1.191 schwarze 2886: struct roff_node *n;
2887:
1.194 schwarze 2888: if (r->man->macroset == MACROSET_MAN)
2889: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 2890: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
2891: if (ln > r->man->last->line)
2892: n->flags |= NODE_LINE;
2893: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
2894: n->eqn->expectargs = UINT_MAX;
2895: roff_node_append(r->man, n);
2896: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 2897:
1.110 schwarze 2898: assert(r->eqn == NULL);
1.191 schwarze 2899: if (r->last_eqn == NULL)
2900: r->last_eqn = eqn_alloc(r->parse);
2901: else
2902: eqn_reset(r->last_eqn);
2903: r->eqn = r->last_eqn;
2904: r->eqn->node = n;
1.41 schwarze 2905:
1.110 schwarze 2906: if (buf->buf[pos] != '\0')
1.107 schwarze 2907: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2908: ".EQ %s", buf->buf + pos);
1.41 schwarze 2909:
1.149 schwarze 2910: return ROFF_IGN;
1.32 schwarze 2911: }
2912:
2913: static enum rofferr
2914: roff_EN(ROFF_ARGS)
2915: {
1.191 schwarze 2916: if (r->eqn != NULL) {
2917: eqn_parse(r->eqn);
2918: r->eqn = NULL;
2919: } else
2920: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
2921: if (buf->buf[pos] != '\0')
2922: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2923: "EN %s", buf->buf + pos);
1.149 schwarze 2924: return ROFF_IGN;
1.32 schwarze 2925: }
2926:
2927: static enum rofferr
1.27 schwarze 2928: roff_TS(ROFF_ARGS)
2929: {
1.193 schwarze 2930: if (r->tbl != NULL) {
1.94 schwarze 2931: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2932: ln, ppos, "TS breaks TS");
1.193 schwarze 2933: tbl_end(r->tbl);
1.27 schwarze 2934: }
1.193 schwarze 2935: r->tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2936: if (r->last_tbl)
1.193 schwarze 2937: r->last_tbl->next = r->tbl;
1.27 schwarze 2938: else
1.193 schwarze 2939: r->first_tbl = r->tbl;
2940: r->last_tbl = r->tbl;
1.169 schwarze 2941: return ROFF_IGN;
2942: }
2943:
2944: static enum rofferr
2945: roff_onearg(ROFF_ARGS)
2946: {
2947: struct roff_node *n;
2948: char *cp;
1.177 schwarze 2949: int npos;
1.169 schwarze 2950:
1.174 schwarze 2951: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 2952: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
2953: tok == ROFF_ti))
1.174 schwarze 2954: man_breakscope(r->man, tok);
2955:
1.181 schwarze 2956: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 2957: r->man->last = roffce_node;
2958: r->man->next = ROFF_NEXT_SIBLING;
2959: }
2960:
1.169 schwarze 2961: roff_elem_alloc(r->man, ln, ppos, tok);
2962: n = r->man->last;
2963:
2964: cp = buf->buf + pos;
2965: if (*cp != '\0') {
2966: while (*cp != '\0' && *cp != ' ')
2967: cp++;
2968: while (*cp == ' ')
2969: *cp++ = '\0';
2970: if (*cp != '\0')
2971: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2972: r->parse, ln, cp - buf->buf,
2973: "%s ... %s", roff_name[tok], cp);
2974: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 2975: }
2976:
1.181 schwarze 2977: if (tok == ROFF_ce || tok == ROFF_rj) {
2978: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 2979: roff_word_alloc(r->man, ln, pos, "1");
2980: r->man->last->flags |= NODE_NOSRC;
2981: }
2982: npos = 0;
2983: if (roff_evalnum(r, ln, r->man->last->string, &npos,
2984: &roffce_lines, 0) == 0) {
2985: mandoc_vmsg(MANDOCERR_CE_NONUM,
2986: r->parse, ln, pos, "ce %s", buf->buf + pos);
2987: roffce_lines = 1;
2988: }
2989: if (roffce_lines < 1) {
2990: r->man->last = r->man->last->parent;
2991: roffce_node = NULL;
2992: roffce_lines = 0;
2993: } else
2994: roffce_node = r->man->last->parent;
2995: } else {
2996: n->flags |= NODE_VALID | NODE_ENDED;
2997: r->man->last = n;
2998: }
2999: n->flags |= NODE_LINE;
1.172 schwarze 3000: r->man->next = ROFF_NEXT_SIBLING;
3001: return ROFF_IGN;
3002: }
3003:
3004: static enum rofferr
3005: roff_manyarg(ROFF_ARGS)
3006: {
3007: struct roff_node *n;
3008: char *sp, *ep;
3009:
3010: roff_elem_alloc(r->man, ln, ppos, tok);
3011: n = r->man->last;
3012:
3013: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3014: while (*ep != '\0' && *ep != ' ')
3015: ep++;
3016: while (*ep == ' ')
3017: *ep++ = '\0';
3018: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3019: }
3020:
3021: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3022: r->man->last = n;
3023: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3024: return ROFF_IGN;
1.123 schwarze 3025: }
3026:
3027: static enum rofferr
1.183 schwarze 3028: roff_als(ROFF_ARGS)
3029: {
3030: char *oldn, *newn, *end, *value;
3031: size_t oldsz, newsz, valsz;
3032:
3033: newn = oldn = buf->buf + pos;
3034: if (*newn == '\0')
3035: return ROFF_IGN;
3036:
3037: newsz = roff_getname(r, &oldn, ln, pos);
3038: if (newn[newsz] == '\\' || *oldn == '\0')
3039: return ROFF_IGN;
3040:
3041: end = oldn;
3042: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3043: if (oldsz == 0)
3044: return ROFF_IGN;
3045:
1.187 schwarze 3046: valsz = mandoc_asprintf(&value, ".%.*s \\$*\\\"\n",
3047: (int)oldsz, oldn);
1.183 schwarze 3048: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3049: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3050: free(value);
3051: return ROFF_IGN;
3052: }
3053:
3054: static enum rofferr
1.168 schwarze 3055: roff_br(ROFF_ARGS)
1.123 schwarze 3056: {
1.174 schwarze 3057: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3058: man_breakscope(r->man, ROFF_br);
1.168 schwarze 3059: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3060: if (buf->buf[pos] != '\0')
3061: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3062: "%s %s", roff_name[tok], buf->buf + pos);
3063: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3064: r->man->next = ROFF_NEXT_SIBLING;
3065: return ROFF_IGN;
1.27 schwarze 3066: }
3067:
3068: static enum rofferr
1.48 schwarze 3069: roff_cc(ROFF_ARGS)
3070: {
3071: const char *p;
3072:
1.110 schwarze 3073: p = buf->buf + pos;
1.48 schwarze 3074:
1.110 schwarze 3075: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3076: r->control = '\0';
1.48 schwarze 3077:
1.110 schwarze 3078: if (*p != '\0')
1.132 schwarze 3079: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3080: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3081:
1.149 schwarze 3082: return ROFF_IGN;
1.48 schwarze 3083: }
3084:
3085: static enum rofferr
1.175 schwarze 3086: roff_ec(ROFF_ARGS)
3087: {
3088: const char *p;
3089:
3090: p = buf->buf + pos;
3091: if (*p == '\0')
3092: r->escape = '\\';
3093: else {
3094: r->escape = *p;
3095: if (*++p != '\0')
3096: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3097: ln, p - buf->buf, "ec ... %s", p);
3098: }
3099: return ROFF_IGN;
3100: }
3101:
3102: static enum rofferr
3103: roff_eo(ROFF_ARGS)
3104: {
3105: r->escape = '\0';
3106: if (buf->buf[pos] != '\0')
3107: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3108: ln, pos, "eo %s", buf->buf + pos);
3109: return ROFF_IGN;
3110: }
3111:
3112: static enum rofferr
1.42 schwarze 3113: roff_tr(ROFF_ARGS)
3114: {
3115: const char *p, *first, *second;
3116: size_t fsz, ssz;
3117: enum mandoc_esc esc;
3118:
1.110 schwarze 3119: p = buf->buf + pos;
1.42 schwarze 3120:
1.110 schwarze 3121: if (*p == '\0') {
1.132 schwarze 3122: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 3123: return ROFF_IGN;
1.42 schwarze 3124: }
3125:
1.110 schwarze 3126: while (*p != '\0') {
1.42 schwarze 3127: fsz = ssz = 1;
3128:
3129: first = p++;
1.110 schwarze 3130: if (*first == '\\') {
1.42 schwarze 3131: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3132: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3133: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3134: ln, (int)(p - buf->buf), first);
1.149 schwarze 3135: return ROFF_IGN;
1.42 schwarze 3136: }
3137: fsz = (size_t)(p - first);
3138: }
3139:
3140: second = p++;
1.110 schwarze 3141: if (*second == '\\') {
1.42 schwarze 3142: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3143: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3144: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3145: ln, (int)(p - buf->buf), second);
1.149 schwarze 3146: return ROFF_IGN;
1.42 schwarze 3147: }
3148: ssz = (size_t)(p - second);
1.110 schwarze 3149: } else if (*second == '\0') {
1.132 schwarze 3150: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3151: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3152: second = " ";
3153: p--;
3154: }
3155:
3156: if (fsz > 1) {
1.80 schwarze 3157: roff_setstrn(&r->xmbtab, first, fsz,
3158: second, ssz, 0);
1.42 schwarze 3159: continue;
3160: }
3161:
1.110 schwarze 3162: if (r->xtab == NULL)
1.80 schwarze 3163: r->xtab = mandoc_calloc(128,
3164: sizeof(struct roffstr));
1.42 schwarze 3165:
3166: free(r->xtab[(int)*first].p);
3167: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3168: r->xtab[(int)*first].sz = ssz;
3169: }
3170:
1.149 schwarze 3171: return ROFF_IGN;
1.42 schwarze 3172: }
3173:
3174: static enum rofferr
1.178 schwarze 3175: roff_rn(ROFF_ARGS)
3176: {
3177: const char *value;
3178: char *oldn, *newn, *end;
3179: size_t oldsz, newsz;
1.187 schwarze 3180: int deftype;
1.178 schwarze 3181:
3182: oldn = newn = buf->buf + pos;
3183: if (*oldn == '\0')
3184: return ROFF_IGN;
3185:
3186: oldsz = roff_getname(r, &newn, ln, pos);
3187: if (oldn[oldsz] == '\\' || *newn == '\0')
3188: return ROFF_IGN;
3189:
3190: end = newn;
3191: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3192: if (newsz == 0)
3193: return ROFF_IGN;
3194:
1.187 schwarze 3195: deftype = ROFFDEF_ANY;
3196: value = roff_getstrn(r, oldn, oldsz, &deftype);
3197: switch (deftype) {
3198: case ROFFDEF_USER:
1.178 schwarze 3199: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3200: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3201: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3202: break;
3203: case ROFFDEF_PRE:
3204: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3205: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3206: break;
3207: case ROFFDEF_REN:
1.178 schwarze 3208: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3209: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3210: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3211: break;
3212: case ROFFDEF_STD:
1.178 schwarze 3213: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3214: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3215: break;
3216: default:
3217: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3218: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3219: break;
3220: }
1.178 schwarze 3221: return ROFF_IGN;
3222: }
3223:
3224: static enum rofferr
1.14 schwarze 3225: roff_so(ROFF_ARGS)
3226: {
1.121 schwarze 3227: char *name, *cp;
1.15 schwarze 3228:
1.110 schwarze 3229: name = buf->buf + pos;
1.97 schwarze 3230: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3231:
1.22 schwarze 3232: /*
3233: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3234: * opening anything that's not in our cwd or anything beneath
3235: * it. Thus, explicitly disallow traversing up the file-system
3236: * or using absolute paths.
3237: */
3238:
1.110 schwarze 3239: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3240: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3241: ".so %s", name);
1.121 schwarze 3242: buf->sz = mandoc_asprintf(&cp,
3243: ".sp\nSee the file %s.\n.sp", name) + 1;
3244: free(buf->buf);
3245: buf->buf = cp;
3246: *offs = 0;
1.149 schwarze 3247: return ROFF_REPARSE;
1.14 schwarze 3248: }
3249:
3250: *offs = pos;
1.149 schwarze 3251: return ROFF_SO;
1.7 schwarze 3252: }
3253:
1.138 schwarze 3254: /* --- user defined strings and macros ------------------------------------ */
3255:
1.16 schwarze 3256: static enum rofferr
3257: roff_userdef(ROFF_ARGS)
1.12 schwarze 3258: {
1.183 schwarze 3259: const char *arg[16], *ap;
1.16 schwarze 3260: char *cp, *n1, *n2;
1.164 schwarze 3261: int expand_count, i, ib, ie;
1.135 schwarze 3262: size_t asz, rsz;
1.12 schwarze 3263:
1.16 schwarze 3264: /*
3265: * Collect pointers to macro argument strings
1.61 schwarze 3266: * and NUL-terminate them.
1.16 schwarze 3267: */
1.135 schwarze 3268:
1.145 schwarze 3269: r->argc = 0;
1.110 schwarze 3270: cp = buf->buf + pos;
1.183 schwarze 3271: for (i = 0; i < 16; i++) {
1.145 schwarze 3272: if (*cp == '\0')
3273: arg[i] = "";
3274: else {
3275: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3276: r->argc = i + 1;
3277: }
3278: }
1.16 schwarze 3279:
3280: /*
3281: * Expand macro arguments.
1.12 schwarze 3282: */
1.135 schwarze 3283:
3284: buf->sz = strlen(r->current_string) + 1;
1.164 schwarze 3285: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.135 schwarze 3286: memcpy(n1, r->current_string, buf->sz);
1.164 schwarze 3287: expand_count = 0;
1.135 schwarze 3288: while (*cp != '\0') {
3289:
3290: /* Scan ahead for the next argument invocation. */
3291:
3292: if (*cp++ != '\\')
3293: continue;
3294: if (*cp++ != '$')
3295: continue;
1.146 schwarze 3296: if (*cp == '*') { /* \\$* inserts all arguments */
3297: ib = 0;
3298: ie = r->argc - 1;
3299: } else { /* \\$1 .. \\$9 insert one argument */
3300: ib = ie = *cp - '1';
3301: if (ib < 0 || ib > 8)
3302: continue;
3303: }
1.135 schwarze 3304: cp -= 2;
1.164 schwarze 3305:
3306: /*
3307: * Prevent infinite recursion.
3308: */
3309:
3310: if (cp >= n2)
3311: expand_count = 1;
3312: else if (++expand_count > EXPAND_LIMIT) {
3313: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3314: ln, (int)(cp - n1), NULL);
1.165 schwarze 3315: free(buf->buf);
3316: buf->buf = n1;
1.164 schwarze 3317: return ROFF_IGN;
3318: }
1.135 schwarze 3319:
3320: /*
3321: * Determine the size of the expanded argument,
3322: * taking escaping of quotes into account.
3323: */
3324:
1.146 schwarze 3325: asz = ie > ib ? ie - ib : 0; /* for blanks */
3326: for (i = ib; i <= ie; i++) {
3327: for (ap = arg[i]; *ap != '\0'; ap++) {
3328: asz++;
3329: if (*ap == '"')
3330: asz += 3;
3331: }
1.135 schwarze 3332: }
3333: if (asz != 3) {
3334:
3335: /*
3336: * Determine the size of the rest of the
3337: * unexpanded macro, including the NUL.
3338: */
3339:
3340: rsz = buf->sz - (cp - n1) - 3;
3341:
3342: /*
3343: * When shrinking, move before
3344: * releasing the storage.
3345: */
3346:
3347: if (asz < 3)
3348: memmove(cp + asz, cp + 3, rsz);
3349:
3350: /*
3351: * Resize the storage for the macro
3352: * and readjust the parse pointer.
3353: */
3354:
3355: buf->sz += asz - 3;
3356: n2 = mandoc_realloc(n1, buf->sz);
3357: cp = n2 + (cp - n1);
3358: n1 = n2;
3359:
3360: /*
3361: * When growing, make room
3362: * for the expanded argument.
3363: */
3364:
3365: if (asz > 3)
3366: memmove(cp + asz, cp + 3, rsz);
3367: }
3368:
3369: /* Copy the expanded argument, escaping quotes. */
3370:
3371: n2 = cp;
1.146 schwarze 3372: for (i = ib; i <= ie; i++) {
3373: for (ap = arg[i]; *ap != '\0'; ap++) {
3374: if (*ap == '"') {
3375: memcpy(n2, "\\(dq", 4);
3376: n2 += 4;
3377: } else
3378: *n2++ = *ap;
3379: }
3380: if (i < ie)
3381: *n2++ = ' ';
1.16 schwarze 3382: }
1.12 schwarze 3383: }
3384:
1.16 schwarze 3385: /*
3386: * Replace the macro invocation
3387: * by the expanded macro.
3388: */
1.135 schwarze 3389:
1.110 schwarze 3390: free(buf->buf);
3391: buf->buf = n1;
1.120 schwarze 3392: *offs = 0;
1.16 schwarze 3393:
1.149 schwarze 3394: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3395: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3396: }
1.28 schwarze 3397:
1.178 schwarze 3398: /*
3399: * Calling a high-level macro that was renamed with .rn.
3400: * r->current_string has already been set up by roff_parse().
3401: */
3402: static enum rofferr
3403: roff_renamed(ROFF_ARGS)
3404: {
3405: char *nbuf;
3406:
1.187 schwarze 3407: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3408: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3409: free(buf->buf);
3410: buf->buf = nbuf;
3411: return ROFF_CONT;
3412: }
3413:
1.85 schwarze 3414: static size_t
1.28 schwarze 3415: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3416: {
3417: char *name, *cp;
1.85 schwarze 3418: size_t namesz;
1.28 schwarze 3419:
3420: name = *cpp;
3421: if ('\0' == *name)
1.149 schwarze 3422: return 0;
1.28 schwarze 3423:
1.85 schwarze 3424: /* Read until end of name and terminate it with NUL. */
3425: for (cp = name; 1; cp++) {
3426: if ('\0' == *cp || ' ' == *cp) {
3427: namesz = cp - name;
3428: break;
3429: }
1.28 schwarze 3430: if ('\\' != *cp)
3431: continue;
1.88 schwarze 3432: namesz = cp - name;
3433: if ('{' == cp[1] || '}' == cp[1])
3434: break;
1.28 schwarze 3435: cp++;
3436: if ('\\' == *cp)
3437: continue;
1.97 schwarze 3438: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3439: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3440: mandoc_escape((const char **)&cp, NULL, NULL);
3441: break;
1.28 schwarze 3442: }
3443:
3444: /* Read past spaces. */
3445: while (' ' == *cp)
3446: cp++;
3447:
3448: *cpp = cp;
1.149 schwarze 3449: return namesz;
1.28 schwarze 3450: }
3451:
1.16 schwarze 3452: /*
3453: * Store *string into the user-defined string called *name.
3454: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3455: * append == 0: replace mode
3456: * append == 1: single-line append mode
3457: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3458: */
1.8 schwarze 3459: static void
1.16 schwarze 3460: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3461: int append)
1.7 schwarze 3462: {
1.187 schwarze 3463: size_t namesz;
1.42 schwarze 3464:
1.187 schwarze 3465: namesz = strlen(name);
3466: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3467: string ? strlen(string) : 0, append);
1.187 schwarze 3468: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3469: }
3470:
3471: static void
3472: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3473: const char *string, size_t stringsz, int append)
1.42 schwarze 3474: {
3475: struct roffkv *n;
3476: char *c;
3477: int i;
3478: size_t oldch, newch;
1.7 schwarze 3479:
1.16 schwarze 3480: /* Search for an existing string with the same name. */
1.42 schwarze 3481: n = *r;
3482:
1.84 schwarze 3483: while (n && (namesz != n->key.sz ||
3484: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3485: n = n->next;
1.8 schwarze 3486:
3487: if (NULL == n) {
1.16 schwarze 3488: /* Create a new string table entry. */
1.42 schwarze 3489: n = mandoc_malloc(sizeof(struct roffkv));
3490: n->key.p = mandoc_strndup(name, namesz);
3491: n->key.sz = namesz;
3492: n->val.p = NULL;
3493: n->val.sz = 0;
3494: n->next = *r;
3495: *r = n;
1.66 schwarze 3496: } else if (0 == append) {
1.42 schwarze 3497: free(n->val.p);
3498: n->val.p = NULL;
3499: n->val.sz = 0;
1.16 schwarze 3500: }
3501:
3502: if (NULL == string)
3503: return;
3504:
3505: /*
3506: * One additional byte for the '\n' in multiline mode,
3507: * and one for the terminating '\0'.
3508: */
1.66 schwarze 3509: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3510:
3511: if (NULL == n->val.p) {
3512: n->val.p = mandoc_malloc(newch);
3513: *n->val.p = '\0';
1.16 schwarze 3514: oldch = 0;
3515: } else {
1.42 schwarze 3516: oldch = n->val.sz;
3517: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3518: }
3519:
3520: /* Skip existing content in the destination buffer. */
1.42 schwarze 3521: c = n->val.p + (int)oldch;
1.16 schwarze 3522:
3523: /* Append new content to the destination buffer. */
1.42 schwarze 3524: i = 0;
3525: while (i < (int)stringsz) {
1.16 schwarze 3526: /*
3527: * Rudimentary roff copy mode:
3528: * Handle escaped backslashes.
3529: */
1.42 schwarze 3530: if ('\\' == string[i] && '\\' == string[i + 1])
3531: i++;
3532: *c++ = string[i++];
1.16 schwarze 3533: }
1.8 schwarze 3534:
1.16 schwarze 3535: /* Append terminating bytes. */
1.66 schwarze 3536: if (1 < append)
1.16 schwarze 3537: *c++ = '\n';
1.42 schwarze 3538:
1.16 schwarze 3539: *c = '\0';
1.42 schwarze 3540: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3541: }
3542:
1.8 schwarze 3543: static const char *
1.197 ! schwarze 3544: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 3545: int *deftype)
1.7 schwarze 3546: {
1.187 schwarze 3547: const struct roffkv *n;
1.197 ! schwarze 3548: int found, i;
1.187 schwarze 3549: enum roff_tok tok;
3550:
1.197 ! schwarze 3551: found = 0;
! 3552: for (n = r->strtab; n != NULL; n = n->next) {
! 3553: if (strncmp(name, n->key.p, len) != 0 ||
! 3554: n->key.p[len] != '\0' || n->val.p == NULL)
! 3555: continue;
! 3556: if (*deftype & ROFFDEF_USER) {
! 3557: *deftype = ROFFDEF_USER;
! 3558: return n->val.p;
! 3559: } else {
! 3560: found = 1;
! 3561: break;
! 3562: }
! 3563: }
! 3564: for (n = r->rentab; n != NULL; n = n->next) {
! 3565: if (strncmp(name, n->key.p, len) != 0 ||
! 3566: n->key.p[len] != '\0' || n->val.p == NULL)
! 3567: continue;
! 3568: if (*deftype & ROFFDEF_REN) {
! 3569: *deftype = ROFFDEF_REN;
! 3570: return n->val.p;
! 3571: } else {
! 3572: found = 1;
! 3573: break;
1.187 schwarze 3574: }
3575: }
1.197 ! schwarze 3576: for (i = 0; i < PREDEFS_MAX; i++) {
! 3577: if (strncmp(name, predefs[i].name, len) != 0 ||
! 3578: predefs[i].name[len] != '\0')
! 3579: continue;
! 3580: if (*deftype & ROFFDEF_PRE) {
! 3581: *deftype = ROFFDEF_PRE;
! 3582: return predefs[i].str;
! 3583: } else {
! 3584: found = 1;
! 3585: break;
1.187 schwarze 3586: }
3587: }
1.197 ! schwarze 3588: if (r->man->macroset != MACROSET_MAN) {
! 3589: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
! 3590: if (strncmp(name, roff_name[tok], len) != 0 ||
! 3591: roff_name[tok][len] != '\0')
! 3592: continue;
! 3593: if (*deftype & ROFFDEF_STD) {
! 3594: *deftype = ROFFDEF_STD;
! 3595: return NULL;
! 3596: } else {
! 3597: found = 1;
! 3598: break;
1.187 schwarze 3599: }
3600: }
3601: }
1.197 ! schwarze 3602: if (r->man->macroset != MACROSET_MDOC) {
! 3603: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
! 3604: if (strncmp(name, roff_name[tok], len) != 0 ||
! 3605: roff_name[tok][len] != '\0')
! 3606: continue;
! 3607: if (*deftype & ROFFDEF_STD) {
! 3608: *deftype = ROFFDEF_STD;
! 3609: return NULL;
! 3610: } else {
! 3611: found = 1;
! 3612: break;
1.187 schwarze 3613: }
3614: }
1.197 ! schwarze 3615: }
! 3616:
! 3617: if (found == 0 && *deftype != ROFFDEF_ANY) {
! 3618: if (*deftype & ROFFDEF_REN) {
! 3619: /*
! 3620: * This might still be a request,
! 3621: * so do not treat it as undefined yet.
! 3622: */
! 3623: *deftype = ROFFDEF_UNDEF;
! 3624: return NULL;
1.187 schwarze 3625: }
1.197 ! schwarze 3626:
! 3627: /* Using an undefined string defines it to be empty. */
! 3628:
! 3629: roff_setstrn(&r->strtab, name, len, "", 0, 0);
! 3630: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 3631: }
1.197 ! schwarze 3632:
1.187 schwarze 3633: *deftype = 0;
1.149 schwarze 3634: return NULL;
1.7 schwarze 3635: }
3636:
1.8 schwarze 3637: static void
1.42 schwarze 3638: roff_freestr(struct roffkv *r)
1.7 schwarze 3639: {
1.42 schwarze 3640: struct roffkv *n, *nn;
1.7 schwarze 3641:
1.42 schwarze 3642: for (n = r; n; n = nn) {
3643: free(n->key.p);
3644: free(n->val.p);
1.7 schwarze 3645: nn = n->next;
3646: free(n);
3647: }
1.27 schwarze 3648: }
1.138 schwarze 3649:
3650: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 3651:
3652: /*
3653: * Duplicate an input string, making the appropriate character
3654: * conversations (as stipulated by `tr') along the way.
3655: * Returns a heap-allocated string with all the replacements made.
3656: */
3657: char *
3658: roff_strdup(const struct roff *r, const char *p)
3659: {
3660: const struct roffkv *cp;
3661: char *res;
3662: const char *pp;
3663: size_t ssz, sz;
3664: enum mandoc_esc esc;
3665:
3666: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3667: return mandoc_strdup(p);
1.42 schwarze 3668: else if ('\0' == *p)
1.149 schwarze 3669: return mandoc_strdup("");
1.42 schwarze 3670:
3671: /*
3672: * Step through each character looking for term matches
3673: * (remember that a `tr' can be invoked with an escape, which is
3674: * a glyph but the escape is multi-character).
3675: * We only do this if the character hash has been initialised
3676: * and the string is >0 length.
3677: */
3678:
3679: res = NULL;
3680: ssz = 0;
3681:
3682: while ('\0' != *p) {
1.161 schwarze 3683: assert((unsigned int)*p < 128);
3684: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3685: sz = r->xtab[(int)*p].sz;
3686: res = mandoc_realloc(res, ssz + sz + 1);
3687: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3688: ssz += sz;
3689: p++;
3690: continue;
3691: } else if ('\\' != *p) {
3692: res = mandoc_realloc(res, ssz + 2);
3693: res[ssz++] = *p++;
3694: continue;
3695: }
3696:
3697: /* Search for term matches. */
3698: for (cp = r->xmbtab; cp; cp = cp->next)
3699: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3700: break;
3701:
3702: if (NULL != cp) {
3703: /*
3704: * A match has been found.
3705: * Append the match to the array and move
3706: * forward by its keysize.
3707: */
1.80 schwarze 3708: res = mandoc_realloc(res,
3709: ssz + cp->val.sz + 1);
1.42 schwarze 3710: memcpy(res + ssz, cp->val.p, cp->val.sz);
3711: ssz += cp->val.sz;
3712: p += (int)cp->key.sz;
3713: continue;
3714: }
3715:
3716: /*
3717: * Handle escapes carefully: we need to copy
3718: * over just the escape itself, or else we might
3719: * do replacements within the escape itself.
3720: * Make sure to pass along the bogus string.
3721: */
3722: pp = p++;
3723: esc = mandoc_escape(&p, NULL, NULL);
3724: if (ESCAPE_ERROR == esc) {
3725: sz = strlen(pp);
3726: res = mandoc_realloc(res, ssz + sz + 1);
3727: memcpy(res + ssz, pp, sz);
3728: break;
3729: }
1.80 schwarze 3730: /*
3731: * We bail out on bad escapes.
1.42 schwarze 3732: * No need to warn: we already did so when
3733: * roff_res() was called.
3734: */
3735: sz = (int)(p - pp);
3736: res = mandoc_realloc(res, ssz + sz + 1);
3737: memcpy(res + ssz, pp, sz);
3738: ssz += sz;
3739: }
3740:
3741: res[(int)ssz] = '\0';
1.149 schwarze 3742: return res;
1.99 schwarze 3743: }
3744:
3745: int
3746: roff_getformat(const struct roff *r)
3747: {
3748:
1.149 schwarze 3749: return r->format;
1.48 schwarze 3750: }
3751:
3752: /*
1.80 schwarze 3753: * Find out whether a line is a macro line or not.
1.48 schwarze 3754: * If it is, adjust the current position and return one; if it isn't,
3755: * return zero and don't change the current position.
3756: * If the control character has been set with `.cc', then let that grain
3757: * precedence.
3758: * This is slighly contrary to groff, where using the non-breaking
3759: * control character when `cc' has been invoked will cause the
3760: * non-breaking macro contents to be printed verbatim.
3761: */
3762: int
3763: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3764: {
3765: int pos;
3766:
3767: pos = *ppos;
3768:
1.175 schwarze 3769: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 3770: pos++;
1.175 schwarze 3771: else if (r->control != '\0')
1.149 schwarze 3772: return 0;
1.48 schwarze 3773: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3774: pos += 2;
3775: else if ('.' == cp[pos] || '\'' == cp[pos])
3776: pos++;
3777: else
1.149 schwarze 3778: return 0;
1.48 schwarze 3779:
3780: while (' ' == cp[pos] || '\t' == cp[pos])
3781: pos++;
3782:
3783: *ppos = pos;
1.149 schwarze 3784: return 1;
1.1 schwarze 3785: }
![[BACK]](/icons/back.gif){kind=icon}
Return to roff.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / mandoc