Annotation of src/usr.bin/mandoc/roff.c, Revision 1.192
1.192 ! schwarze 1: /* $OpenBSD: roff.c,v 1.191 2017/07/08 14:51:01 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.159 schwarze 4: * Copyright (c) 2010-2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.167 schwarze 23: #include <stddef.h>
24: #include <stdint.h>
1.51 schwarze 25: #include <stdio.h>
1.1 schwarze 26: #include <stdlib.h>
27: #include <string.h>
28:
29: #include "mandoc.h"
1.74 schwarze 30: #include "mandoc_aux.h"
1.167 schwarze 31: #include "mandoc_ohash.h"
1.137 schwarze 32: #include "roff.h"
1.98 daniel 33: #include "libmandoc.h"
1.138 schwarze 34: #include "roff_int.h"
1.27 schwarze 35: #include "libroff.h"
1.2 schwarze 36:
1.43 schwarze 37: /* Maximum number of string expansions per line, to break infinite loops. */
38: #define EXPAND_LIMIT 1000
39:
1.187 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)
47:
1.138 schwarze 48: /* --- data types --------------------------------------------------------- */
49:
1.41 schwarze 50: /*
1.42 schwarze 51: * An incredibly-simple string buffer.
52: */
1.8 schwarze 53: struct roffstr {
1.42 schwarze 54: char *p; /* nil-terminated buffer */
55: size_t sz; /* saved strlen(p) */
56: };
57:
58: /*
59: * A key-value roffstr pair as part of a singly-linked list.
60: */
61: struct roffkv {
62: struct roffstr key;
63: struct roffstr val;
64: struct roffkv *next; /* next in list */
1.8 schwarze 65: };
66:
1.52 schwarze 67: /*
68: * A single number register as part of a singly-linked list.
69: */
70: struct roffreg {
71: struct roffstr key;
1.53 schwarze 72: int val;
1.52 schwarze 73: struct roffreg *next;
74: };
75:
1.167 schwarze 76: /*
77: * Association of request and macro names with token IDs.
78: */
79: struct roffreq {
80: enum roff_tok tok;
81: char name[];
82: };
83:
1.1 schwarze 84: struct roff {
1.35 schwarze 85: struct mparse *parse; /* parse point */
1.168 schwarze 86: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 87: struct roffnode *last; /* leaf of stack */
1.96 schwarze 88: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 89: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 90: struct roffreg *regtab; /* number registers */
1.42 schwarze 91: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 92: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 93: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
94: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 95: const char *current_string; /* value of last called user macro */
1.27 schwarze 96: struct tbl_node *first_tbl; /* first table parsed */
97: struct tbl_node *last_tbl; /* last table parsed */
98: struct tbl_node *tbl; /* current table being parsed */
1.191 schwarze 99: struct eqn_node *last_eqn; /* equation parser */
100: struct eqn_node *eqn; /* active equation parser */
1.102 schwarze 101: int eqn_inline; /* current equation is inline */
1.96 schwarze 102: int options; /* parse options */
103: int rstacksz; /* current size limit of rstack */
104: int rstackpos; /* position in rstack */
1.99 schwarze 105: int format; /* current file in mdoc or man format */
1.145 schwarze 106: int argc; /* number of args of the last macro */
1.96 schwarze 107: char control; /* control character */
1.175 schwarze 108: char escape; /* escape character */
1.1 schwarze 109: };
110:
111: struct roffnode {
1.166 schwarze 112: enum roff_tok tok; /* type of node */
1.1 schwarze 113: struct roffnode *parent; /* up one in stack */
114: int line; /* parse line */
115: int col; /* parse col */
1.16 schwarze 116: char *name; /* node name, e.g. macro name */
1.2 schwarze 117: char *end; /* end-rules: custom token */
118: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 119: int rule; /* current evaluation rule */
1.1 schwarze 120: };
121:
122: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 123: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 124: struct buf *buf, /* input buffer */ \
1.1 schwarze 125: int ln, /* parse line */ \
1.2 schwarze 126: int ppos, /* original pos in buffer */ \
127: int pos, /* current pos in buffer */ \
128: int *offs /* reset offset of buffer data */
1.1 schwarze 129:
130: typedef enum rofferr (*roffproc)(ROFF_ARGS);
131:
132: struct roffmac {
1.2 schwarze 133: roffproc proc; /* process new macro */
134: roffproc text; /* process as child text of macro */
135: roffproc sub; /* process as child of macro */
136: int flags;
137: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 138: };
139:
1.37 schwarze 140: struct predef {
141: const char *name; /* predefined input name */
142: const char *str; /* replacement symbol */
143: };
144:
145: #define PREDEF(__name, __str) \
146: { (__name), (__str) },
147:
1.138 schwarze 148: /* --- function prototypes ------------------------------------------------ */
149:
1.42 schwarze 150: static void roffnode_cleanscope(struct roff *);
151: static void roffnode_pop(struct roff *);
1.166 schwarze 152: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 153: const char *, int, int);
1.183 schwarze 154: static enum rofferr roff_als(ROFF_ARGS);
1.2 schwarze 155: static enum rofferr roff_block(ROFF_ARGS);
156: static enum rofferr roff_block_text(ROFF_ARGS);
157: static enum rofferr roff_block_sub(ROFF_ARGS);
1.168 schwarze 158: static enum rofferr roff_br(ROFF_ARGS);
1.2 schwarze 159: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 160: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 161: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 162: static enum rofferr roff_cond(ROFF_ARGS);
163: static enum rofferr roff_cond_text(ROFF_ARGS);
164: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 165: static enum rofferr roff_ds(ROFF_ARGS);
1.175 schwarze 166: static enum rofferr roff_ec(ROFF_ARGS);
167: static enum rofferr roff_eo(ROFF_ARGS);
1.110 schwarze 168: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 169: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 170: static int roff_evalnum(struct roff *, int,
171: const char *, int *, int *, int);
172: static int roff_evalpar(struct roff *, int,
1.133 schwarze 173: const char *, int *, int *, int);
1.71 schwarze 174: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 175: static void roff_free1(struct roff *);
1.52 schwarze 176: static void roff_freereg(struct roffreg *);
1.42 schwarze 177: static void roff_freestr(struct roffkv *);
1.85 schwarze 178: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 179: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 180: static int roff_getop(const char *, int *, char *);
1.53 schwarze 181: static int roff_getregn(const struct roff *,
182: const char *, size_t);
1.145 schwarze 183: static int roff_getregro(const struct roff *,
184: const char *name);
1.80 schwarze 185: static const char *roff_getstrn(const struct roff *,
1.187 schwarze 186: const char *, size_t, int *);
1.143 schwarze 187: static int roff_hasregn(const struct roff *,
188: const char *, size_t);
1.123 schwarze 189: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 190: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 191: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 192: static void roff_man_alloc1(struct roff_man *);
193: static void roff_man_free1(struct roff_man *);
1.172 schwarze 194: static enum rofferr roff_manyarg(ROFF_ARGS);
1.6 schwarze 195: static enum rofferr roff_nr(ROFF_ARGS);
1.169 schwarze 196: static enum rofferr roff_onearg(ROFF_ARGS);
1.166 schwarze 197: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 198: int, int);
1.177 schwarze 199: static enum rofferr roff_parsetext(struct roff *, struct buf *,
200: int, int *);
1.178 schwarze 201: static enum rofferr roff_renamed(ROFF_ARGS);
1.110 schwarze 202: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 203: static enum rofferr roff_rm(ROFF_ARGS);
1.178 schwarze 204: static enum rofferr roff_rn(ROFF_ARGS);
1.76 schwarze 205: static enum rofferr roff_rr(ROFF_ARGS);
1.8 schwarze 206: static void roff_setstr(struct roff *,
1.16 schwarze 207: const char *, const char *, int);
1.80 schwarze 208: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 209: size_t, const char *, size_t, int);
1.14 schwarze 210: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 211: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 212: static enum rofferr roff_Dd(ROFF_ARGS);
1.27 schwarze 213: static enum rofferr roff_TE(ROFF_ARGS);
214: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 215: static enum rofferr roff_EQ(ROFF_ARGS);
216: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 217: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 218: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 219: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 220:
1.138 schwarze 221: /* --- constant data ------------------------------------------------------ */
222:
1.133 schwarze 223: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
224: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
225:
1.166 schwarze 226: const char *__roff_name[MAN_MAX + 1] = {
1.177 schwarze 227: "br", "ce", "ft", "ll",
1.184 schwarze 228: "mc", "po", "rj", "sp",
229: "ta", "ti", NULL,
1.166 schwarze 230: "ab", "ad", "af", "aln",
231: "als", "am", "am1", "ami",
232: "ami1", "as", "as1", "asciify",
233: "backtrace", "bd", "bleedat", "blm",
234: "box", "boxa", "bp", "BP",
235: "break", "breakchar", "brnl", "brp",
1.177 schwarze 236: "brpnl", "c2", "cc",
1.166 schwarze 237: "cf", "cflags", "ch", "char",
238: "chop", "class", "close", "CL",
239: "color", "composite", "continue", "cp",
240: "cropat", "cs", "cu", "da",
241: "dch", "Dd", "de", "de1",
242: "defcolor", "dei", "dei1", "device",
243: "devicem", "di", "do", "ds",
244: "ds1", "dwh", "dt", "ec",
245: "ecr", "ecs", "el", "em",
246: "EN", "eo", "EP", "EQ",
247: "errprint", "ev", "evc", "ex",
248: "fallback", "fam", "fc", "fchar",
249: "fcolor", "fdeferlig", "feature", "fkern",
250: "fl", "flig", "fp", "fps",
251: "fschar", "fspacewidth", "fspecial", "ftr",
252: "fzoom", "gcolor", "hc", "hcode",
253: "hidechar", "hla", "hlm", "hpf",
254: "hpfa", "hpfcode", "hw", "hy",
255: "hylang", "hylen", "hym", "hypp",
256: "hys", "ie", "if", "ig",
257: "index", "it", "itc", "IX",
258: "kern", "kernafter", "kernbefore", "kernpair",
259: "lc", "lc_ctype", "lds", "length",
260: "letadj", "lf", "lg", "lhang",
261: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 262: "ls", "lsm", "lt",
1.166 schwarze 263: "mediasize", "minss", "mk", "mso",
264: "na", "ne", "nh", "nhychar",
265: "nm", "nn", "nop", "nr",
266: "nrf", "nroff", "ns", "nx",
267: "open", "opena", "os", "output",
268: "padj", "papersize", "pc", "pev",
269: "pi", "PI", "pl", "pm",
1.184 schwarze 270: "pn", "pnr", "ps",
1.166 schwarze 271: "psbb", "pshape", "pso", "ptr",
272: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 273: "return", "rfschar", "rhang",
1.166 schwarze 274: "rm", "rn", "rnn", "rr",
275: "rs", "rt", "schar", "sentchar",
276: "shc", "shift", "sizes", "so",
277: "spacewidth", "special", "spreadwarn", "ss",
278: "sty", "substring", "sv", "sy",
1.172 schwarze 279: "T&", "tc", "TE",
1.173 schwarze 280: "TH", "tkf", "tl",
1.166 schwarze 281: "tm", "tm1", "tmc", "tr",
282: "track", "transchar", "trf", "trimat",
283: "trin", "trnt", "troff", "TS",
284: "uf", "ul", "unformat", "unwatch",
285: "unwatchn", "vpt", "vs", "warn",
286: "warnscale", "watch", "watchlength", "watchn",
287: "wh", "while", "write", "writec",
288: "writem", "xflag", ".", NULL,
1.178 schwarze 289: NULL, "text",
1.166 schwarze 290: "Dd", "Dt", "Os", "Sh",
291: "Ss", "Pp", "D1", "Dl",
292: "Bd", "Ed", "Bl", "El",
293: "It", "Ad", "An", "Ap",
294: "Ar", "Cd", "Cm", "Dv",
295: "Er", "Ev", "Ex", "Fa",
296: "Fd", "Fl", "Fn", "Ft",
297: "Ic", "In", "Li", "Nd",
298: "Nm", "Op", "Ot", "Pa",
299: "Rv", "St", "Va", "Vt",
300: "Xr", "%A", "%B", "%D",
301: "%I", "%J", "%N", "%O",
302: "%P", "%R", "%T", "%V",
303: "Ac", "Ao", "Aq", "At",
304: "Bc", "Bf", "Bo", "Bq",
305: "Bsx", "Bx", "Db", "Dc",
306: "Do", "Dq", "Ec", "Ef",
307: "Em", "Eo", "Fx", "Ms",
308: "No", "Ns", "Nx", "Ox",
309: "Pc", "Pf", "Po", "Pq",
310: "Qc", "Ql", "Qo", "Qq",
311: "Re", "Rs", "Sc", "So",
312: "Sq", "Sm", "Sx", "Sy",
313: "Tn", "Ux", "Xc", "Xo",
314: "Fo", "Fc", "Oo", "Oc",
315: "Bk", "Ek", "Bt", "Hf",
316: "Fr", "Ud", "Lb", "Lp",
317: "Lk", "Mt", "Brq", "Bro",
318: "Brc", "%C", "Es", "En",
1.171 schwarze 319: "Dx", "%Q", "%U", "Ta",
320: NULL,
1.166 schwarze 321: "TH", "SH", "SS", "TP",
322: "LP", "PP", "P", "IP",
323: "HP", "SM", "SB", "BI",
324: "IB", "BR", "RB", "R",
325: "B", "I", "IR", "RI",
1.171 schwarze 326: "nf", "fi",
1.166 schwarze 327: "RE", "RS", "DT", "UC",
1.169 schwarze 328: "PD", "AT", "in",
1.166 schwarze 329: "OP", "EX", "EE", "UR",
1.189 bentley 330: "UE", "MT", "ME", NULL
1.166 schwarze 331: };
332: const char *const *roff_name = __roff_name;
333:
334: static struct roffmac roffs[TOKEN_NONE] = {
1.168 schwarze 335: { roff_br, NULL, NULL, 0 }, /* br */
1.177 schwarze 336: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.169 schwarze 337: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 338: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 339: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.184 schwarze 340: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 341: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 342: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 343: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 344: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 345: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 346: { roff_unsupp, NULL, NULL, 0 }, /* ab */
347: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
348: { roff_line_ignore, NULL, NULL, 0 }, /* af */
349: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 350: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 351: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
352: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
353: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
354: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
355: { roff_ds, NULL, NULL, 0 }, /* as */
356: { roff_ds, NULL, NULL, 0 }, /* as1 */
357: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
358: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
359: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
360: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
361: { roff_unsupp, NULL, NULL, 0 }, /* blm */
362: { roff_unsupp, NULL, NULL, 0 }, /* box */
363: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
364: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
365: { roff_unsupp, NULL, NULL, 0 }, /* BP */
366: { roff_unsupp, NULL, NULL, 0 }, /* break */
367: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
368: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 schwarze 369: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 370: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
371: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
372: { roff_cc, NULL, NULL, 0 }, /* cc */
373: { roff_insec, NULL, NULL, 0 }, /* cf */
374: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
375: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
376: { roff_unsupp, NULL, NULL, 0 }, /* char */
377: { roff_unsupp, NULL, NULL, 0 }, /* chop */
378: { roff_line_ignore, NULL, NULL, 0 }, /* class */
379: { roff_insec, NULL, NULL, 0 }, /* close */
380: { roff_unsupp, NULL, NULL, 0 }, /* CL */
381: { roff_line_ignore, NULL, NULL, 0 }, /* color */
382: { roff_unsupp, NULL, NULL, 0 }, /* composite */
383: { roff_unsupp, NULL, NULL, 0 }, /* continue */
384: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
385: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
386: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
387: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
388: { roff_unsupp, NULL, NULL, 0 }, /* da */
389: { roff_unsupp, NULL, NULL, 0 }, /* dch */
390: { roff_Dd, NULL, NULL, 0 }, /* Dd */
391: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
392: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
393: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
394: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
395: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
396: { roff_unsupp, NULL, NULL, 0 }, /* device */
397: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
398: { roff_unsupp, NULL, NULL, 0 }, /* di */
399: { roff_unsupp, NULL, NULL, 0 }, /* do */
400: { roff_ds, NULL, NULL, 0 }, /* ds */
401: { roff_ds, NULL, NULL, 0 }, /* ds1 */
402: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
403: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 404: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 405: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
406: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
407: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
408: { roff_unsupp, NULL, NULL, 0 }, /* em */
409: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 410: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 411: { roff_unsupp, NULL, NULL, 0 }, /* EP */
412: { roff_EQ, NULL, NULL, 0 }, /* EQ */
413: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
414: { roff_unsupp, NULL, NULL, 0 }, /* ev */
415: { roff_unsupp, NULL, NULL, 0 }, /* evc */
416: { roff_unsupp, NULL, NULL, 0 }, /* ex */
417: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
418: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
419: { roff_unsupp, NULL, NULL, 0 }, /* fc */
420: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
421: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
422: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
423: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
424: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
425: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
426: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
427: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
428: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
429: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
430: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
431: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
432: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
433: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
434: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
435: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
436: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
437: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
438: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
439: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
440: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
441: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
442: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
443: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
444: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
445: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
446: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
447: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
448: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
449: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
450: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
451: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
452: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
453: { roff_unsupp, NULL, NULL, 0 }, /* index */
454: { roff_it, NULL, NULL, 0 }, /* it */
455: { roff_unsupp, NULL, NULL, 0 }, /* itc */
456: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
457: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
458: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
459: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
460: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
461: { roff_unsupp, NULL, NULL, 0 }, /* lc */
462: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
463: { roff_unsupp, NULL, NULL, 0 }, /* lds */
464: { roff_unsupp, NULL, NULL, 0 }, /* length */
465: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
466: { roff_insec, NULL, NULL, 0 }, /* lf */
467: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
468: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
469: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
470: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
471: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
472: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
473: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
474: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
475: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
476: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
477: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
478: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
479: { roff_insec, NULL, NULL, 0 }, /* mso */
480: { roff_line_ignore, NULL, NULL, 0 }, /* na */
481: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
482: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
483: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
484: { roff_unsupp, NULL, NULL, 0 }, /* nm */
485: { roff_unsupp, NULL, NULL, 0 }, /* nn */
486: { roff_unsupp, NULL, NULL, 0 }, /* nop */
487: { roff_nr, NULL, NULL, 0 }, /* nr */
488: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
489: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
490: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
491: { roff_insec, NULL, NULL, 0 }, /* nx */
492: { roff_insec, NULL, NULL, 0 }, /* open */
493: { roff_insec, NULL, NULL, 0 }, /* opena */
494: { roff_line_ignore, NULL, NULL, 0 }, /* os */
495: { roff_unsupp, NULL, NULL, 0 }, /* output */
496: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
497: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
498: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
499: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
500: { roff_insec, NULL, NULL, 0 }, /* pi */
501: { roff_unsupp, NULL, NULL, 0 }, /* PI */
502: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
503: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
504: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
505: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
506: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
507: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
508: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
509: { roff_insec, NULL, NULL, 0 }, /* pso */
510: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
511: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
512: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
513: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
514: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
515: { roff_unsupp, NULL, NULL, 0 }, /* return */
516: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
517: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
518: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 519: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 520: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
521: { roff_rr, NULL, NULL, 0 }, /* rr */
522: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
523: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
524: { roff_unsupp, NULL, NULL, 0 }, /* schar */
525: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
526: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
527: { roff_unsupp, NULL, NULL, 0 }, /* shift */
528: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
529: { roff_so, NULL, NULL, 0 }, /* so */
530: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
531: { roff_line_ignore, NULL, NULL, 0 }, /* special */
532: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
533: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
534: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
535: { roff_unsupp, NULL, NULL, 0 }, /* substring */
536: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
537: { roff_insec, NULL, NULL, 0 }, /* sy */
538: { roff_T_, NULL, NULL, 0 }, /* T& */
539: { roff_unsupp, NULL, NULL, 0 }, /* tc */
540: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 541: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 542: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
543: { roff_unsupp, NULL, NULL, 0 }, /* tl */
544: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
545: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
546: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
547: { roff_tr, NULL, NULL, 0 }, /* tr */
548: { roff_line_ignore, NULL, NULL, 0 }, /* track */
549: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
550: { roff_insec, NULL, NULL, 0 }, /* trf */
551: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
552: { roff_unsupp, NULL, NULL, 0 }, /* trin */
553: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
554: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
555: { roff_TS, NULL, NULL, 0 }, /* TS */
556: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
557: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
558: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
559: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
560: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
561: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
562: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
563: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
564: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
565: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
566: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
567: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
568: { roff_unsupp, NULL, NULL, 0 }, /* wh */
569: { roff_unsupp, NULL, NULL, 0 }, /* while */
570: { roff_insec, NULL, NULL, 0 }, /* write */
571: { roff_insec, NULL, NULL, 0 }, /* writec */
572: { roff_insec, NULL, NULL, 0 }, /* writem */
573: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
574: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 575: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 576: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 577: };
578:
1.37 schwarze 579: /* Array of injected predefined strings. */
580: #define PREDEFS_MAX 38
581: static const struct predef predefs[PREDEFS_MAX] = {
582: #include "predefs.in"
583: };
584:
1.177 schwarze 585: static int roffce_lines; /* number of input lines to center */
586: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 587: static int roffit_lines; /* number of lines to delay */
588: static char *roffit_macro; /* nil-terminated macro line */
589:
1.80 schwarze 590:
1.138 schwarze 591: /* --- request table ------------------------------------------------------ */
592:
1.167 schwarze 593: struct ohash *
594: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 595: {
1.167 schwarze 596: struct ohash *htab;
597: struct roffreq *req;
598: enum roff_tok tok;
599: size_t sz;
600: unsigned int slot;
1.3 schwarze 601:
1.167 schwarze 602: htab = mandoc_malloc(sizeof(*htab));
603: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 604:
1.167 schwarze 605: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 606: if (roff_name[tok] == NULL)
607: continue;
1.167 schwarze 608: sz = strlen(roff_name[tok]);
609: req = mandoc_malloc(sizeof(*req) + sz + 1);
610: req->tok = tok;
611: memcpy(req->name, roff_name[tok], sz + 1);
612: slot = ohash_qlookup(htab, req->name);
613: ohash_insert(htab, slot, req);
1.3 schwarze 614: }
1.167 schwarze 615: return htab;
1.3 schwarze 616: }
617:
1.167 schwarze 618: void
619: roffhash_free(struct ohash *htab)
1.1 schwarze 620: {
1.167 schwarze 621: struct roffreq *req;
622: unsigned int slot;
1.1 schwarze 623:
1.167 schwarze 624: if (htab == NULL)
625: return;
626: for (req = ohash_first(htab, &slot); req != NULL;
627: req = ohash_next(htab, &slot))
628: free(req);
629: ohash_delete(htab);
630: free(htab);
631: }
632:
633: enum roff_tok
634: roffhash_find(struct ohash *htab, const char *name, size_t sz)
635: {
636: struct roffreq *req;
637: const char *end;
638:
639: if (sz) {
640: end = name + sz;
641: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
642: } else
643: req = ohash_find(htab, ohash_qlookup(htab, name));
644: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 645: }
646:
1.138 schwarze 647: /* --- stack of request blocks -------------------------------------------- */
648:
1.1 schwarze 649: /*
650: * Pop the current node off of the stack of roff instructions currently
651: * pending.
652: */
653: static void
654: roffnode_pop(struct roff *r)
655: {
656: struct roffnode *p;
657:
1.2 schwarze 658: assert(r->last);
1.80 schwarze 659: p = r->last;
1.2 schwarze 660:
661: r->last = r->last->parent;
1.16 schwarze 662: free(p->name);
663: free(p->end);
1.1 schwarze 664: free(p);
665: }
666:
667: /*
668: * Push a roff node onto the instruction stack. This must later be
669: * removed with roffnode_pop().
670: */
1.11 schwarze 671: static void
1.166 schwarze 672: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 673: int line, int col)
1.1 schwarze 674: {
675: struct roffnode *p;
676:
1.11 schwarze 677: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 678: p->tok = tok;
1.16 schwarze 679: if (name)
680: p->name = mandoc_strdup(name);
1.1 schwarze 681: p->parent = r->last;
682: p->line = line;
683: p->col = col;
1.71 schwarze 684: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 685:
686: r->last = p;
687: }
688:
1.138 schwarze 689: /* --- roff parser state data management ---------------------------------- */
690:
1.1 schwarze 691: static void
692: roff_free1(struct roff *r)
693: {
1.49 schwarze 694: struct tbl_node *tbl;
1.42 schwarze 695: int i;
1.27 schwarze 696:
1.49 schwarze 697: while (NULL != (tbl = r->first_tbl)) {
698: r->first_tbl = tbl->next;
699: tbl_free(tbl);
1.27 schwarze 700: }
701: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 702:
1.191 schwarze 703: if (r->last_eqn != NULL)
704: eqn_free(r->last_eqn);
705: r->last_eqn = r->eqn = NULL;
1.32 schwarze 706:
1.1 schwarze 707: while (r->last)
708: roffnode_pop(r);
1.27 schwarze 709:
1.96 schwarze 710: free (r->rstack);
711: r->rstack = NULL;
712: r->rstacksz = 0;
713: r->rstackpos = -1;
714:
715: roff_freereg(r->regtab);
716: r->regtab = NULL;
717:
1.42 schwarze 718: roff_freestr(r->strtab);
1.178 schwarze 719: roff_freestr(r->rentab);
1.42 schwarze 720: roff_freestr(r->xmbtab);
1.178 schwarze 721: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 722:
723: if (r->xtab)
724: for (i = 0; i < 128; i++)
725: free(r->xtab[i].p);
726: free(r->xtab);
727: r->xtab = NULL;
1.1 schwarze 728: }
729:
730: void
731: roff_reset(struct roff *r)
732: {
733: roff_free1(r);
1.99 schwarze 734: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 735: r->control = '\0';
736: r->escape = '\\';
1.179 schwarze 737: roffce_lines = 0;
738: roffce_node = NULL;
739: roffit_lines = 0;
740: roffit_macro = NULL;
1.1 schwarze 741: }
742:
743: void
744: roff_free(struct roff *r)
745: {
746: roff_free1(r);
1.167 schwarze 747: roffhash_free(r->reqtab);
1.1 schwarze 748: free(r);
749: }
750:
751: struct roff *
1.151 schwarze 752: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 753: {
754: struct roff *r;
755:
1.11 schwarze 756: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 757: r->parse = parse;
1.167 schwarze 758: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.72 schwarze 759: r->options = options;
1.99 schwarze 760: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 761: r->rstackpos = -1;
1.175 schwarze 762: r->escape = '\\';
1.149 schwarze 763: return r;
1.137 schwarze 764: }
765:
1.138 schwarze 766: /* --- syntax tree state data management ---------------------------------- */
767:
1.137 schwarze 768: static void
769: roff_man_free1(struct roff_man *man)
770: {
771:
1.138 schwarze 772: if (man->first != NULL)
773: roff_node_delete(man, man->first);
1.137 schwarze 774: free(man->meta.msec);
775: free(man->meta.vol);
776: free(man->meta.os);
777: free(man->meta.arch);
778: free(man->meta.title);
779: free(man->meta.name);
780: free(man->meta.date);
781: }
782:
783: static void
784: roff_man_alloc1(struct roff_man *man)
785: {
786:
787: memset(&man->meta, 0, sizeof(man->meta));
788: man->first = mandoc_calloc(1, sizeof(*man->first));
789: man->first->type = ROFFT_ROOT;
790: man->last = man->first;
791: man->last_es = NULL;
792: man->flags = 0;
793: man->macroset = MACROSET_NONE;
794: man->lastsec = man->lastnamed = SEC_NONE;
795: man->next = ROFF_NEXT_CHILD;
796: }
797:
798: void
799: roff_man_reset(struct roff_man *man)
800: {
801:
802: roff_man_free1(man);
803: roff_man_alloc1(man);
804: }
805:
806: void
807: roff_man_free(struct roff_man *man)
808: {
809:
810: roff_man_free1(man);
811: free(man);
812: }
813:
814: struct roff_man *
815: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.188 schwarze 816: const char *os_s, int quick)
1.137 schwarze 817: {
818: struct roff_man *man;
819:
820: man = mandoc_calloc(1, sizeof(*man));
821: man->parse = parse;
822: man->roff = roff;
1.188 schwarze 823: man->os_s = os_s;
1.137 schwarze 824: man->quick = quick;
825: roff_man_alloc1(man);
1.168 schwarze 826: roff->man = man;
1.149 schwarze 827: return man;
1.1 schwarze 828: }
829:
1.138 schwarze 830: /* --- syntax tree handling ----------------------------------------------- */
831:
832: struct roff_node *
833: roff_node_alloc(struct roff_man *man, int line, int pos,
834: enum roff_type type, int tok)
835: {
836: struct roff_node *n;
837:
838: n = mandoc_calloc(1, sizeof(*n));
839: n->line = line;
840: n->pos = pos;
841: n->tok = tok;
842: n->type = type;
843: n->sec = man->lastsec;
844:
845: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 846: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 847: else
1.157 schwarze 848: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 849: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 850: n->flags |= NODE_LINE;
1.138 schwarze 851: man->flags &= ~MDOC_NEWLINE;
852:
1.149 schwarze 853: return n;
1.138 schwarze 854: }
855:
856: void
857: roff_node_append(struct roff_man *man, struct roff_node *n)
858: {
859:
860: switch (man->next) {
861: case ROFF_NEXT_SIBLING:
1.153 schwarze 862: if (man->last->next != NULL) {
863: n->next = man->last->next;
864: man->last->next->prev = n;
865: } else
866: man->last->parent->last = n;
1.138 schwarze 867: man->last->next = n;
868: n->prev = man->last;
869: n->parent = man->last->parent;
870: break;
871: case ROFF_NEXT_CHILD:
1.159 schwarze 872: if (man->last->child != NULL) {
873: n->next = man->last->child;
874: man->last->child->prev = n;
875: } else
876: man->last->last = n;
1.138 schwarze 877: man->last->child = n;
878: n->parent = man->last;
879: break;
880: default:
881: abort();
882: }
1.154 schwarze 883: man->last = n;
1.138 schwarze 884:
885: switch (n->type) {
886: case ROFFT_HEAD:
887: n->parent->head = n;
888: break;
889: case ROFFT_BODY:
1.154 schwarze 890: if (n->end != ENDBODY_NOT)
891: return;
1.138 schwarze 892: n->parent->body = n;
893: break;
894: case ROFFT_TAIL:
895: n->parent->tail = n;
896: break;
897: default:
1.154 schwarze 898: return;
1.138 schwarze 899: }
1.154 schwarze 900:
901: /*
902: * Copy over the normalised-data pointer of our parent. Not
903: * everybody has one, but copying a null pointer is fine.
904: */
905:
906: n->norm = n->parent->norm;
907: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 908: }
909:
1.139 schwarze 910: void
911: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
912: {
913: struct roff_node *n;
914:
915: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
916: n->string = roff_strdup(man->roff, word);
917: roff_node_append(man, n);
1.158 schwarze 918: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 919: man->next = ROFF_NEXT_SIBLING;
920: }
921:
922: void
923: roff_word_append(struct roff_man *man, const char *word)
924: {
925: struct roff_node *n;
926: char *addstr, *newstr;
927:
928: n = man->last;
929: addstr = roff_strdup(man->roff, word);
930: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
931: free(addstr);
932: free(n->string);
933: n->string = newstr;
934: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 935: }
936:
937: void
938: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
939: {
940: struct roff_node *n;
941:
942: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
943: roff_node_append(man, n);
944: man->next = ROFF_NEXT_CHILD;
945: }
946:
947: struct roff_node *
948: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
949: {
950: struct roff_node *n;
951:
952: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
953: roff_node_append(man, n);
954: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 955: return n;
1.139 schwarze 956: }
957:
1.138 schwarze 958: struct roff_node *
959: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
960: {
961: struct roff_node *n;
962:
963: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
964: roff_node_append(man, n);
965: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 966: return n;
1.138 schwarze 967: }
968:
969: struct roff_node *
970: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
971: {
972: struct roff_node *n;
973:
974: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
975: roff_node_append(man, n);
976: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 977: return n;
1.139 schwarze 978: }
979:
980: void
981: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
982: {
983: struct roff_node *n;
984:
985: if (man->macroset == MACROSET_MAN)
1.174 schwarze 986: man_breakscope(man, ROFF_TS);
1.139 schwarze 987: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
988: n->span = tbl;
989: roff_node_append(man, n);
1.158 schwarze 990: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 991: man->next = ROFF_NEXT_SIBLING;
1.138 schwarze 992: }
993:
994: void
995: roff_node_unlink(struct roff_man *man, struct roff_node *n)
996: {
997:
998: /* Adjust siblings. */
999:
1000: if (n->prev)
1001: n->prev->next = n->next;
1002: if (n->next)
1003: n->next->prev = n->prev;
1004:
1005: /* Adjust parent. */
1006:
1007: if (n->parent != NULL) {
1008: if (n->parent->child == n)
1009: n->parent->child = n->next;
1010: if (n->parent->last == n)
1011: n->parent->last = n->prev;
1012: }
1013:
1014: /* Adjust parse point. */
1015:
1016: if (man == NULL)
1017: return;
1018: if (man->last == n) {
1019: if (n->prev == NULL) {
1020: man->last = n->parent;
1021: man->next = ROFF_NEXT_CHILD;
1022: } else {
1023: man->last = n->prev;
1024: man->next = ROFF_NEXT_SIBLING;
1025: }
1026: }
1027: if (man->first == n)
1028: man->first = NULL;
1029: }
1030:
1031: void
1032: roff_node_free(struct roff_node *n)
1033: {
1034:
1035: if (n->args != NULL)
1036: mdoc_argv_free(n->args);
1037: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1038: free(n->norm);
1.191 schwarze 1039: if (n->eqn != NULL)
1040: eqn_box_free(n->eqn);
1.138 schwarze 1041: free(n->string);
1042: free(n);
1043: }
1044:
1045: void
1046: roff_node_delete(struct roff_man *man, struct roff_node *n)
1047: {
1048:
1049: while (n->child != NULL)
1050: roff_node_delete(man, n->child);
1051: roff_node_unlink(man, n);
1052: roff_node_free(n);
1.141 schwarze 1053: }
1054:
1055: void
1056: deroff(char **dest, const struct roff_node *n)
1057: {
1058: char *cp;
1059: size_t sz;
1060:
1061: if (n->type != ROFFT_TEXT) {
1062: for (n = n->child; n != NULL; n = n->next)
1063: deroff(dest, n);
1064: return;
1065: }
1066:
1.160 schwarze 1067: /* Skip leading whitespace. */
1.141 schwarze 1068:
1.160 schwarze 1069: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1070: if (cp[0] == '\\' && cp[1] != '\0' &&
1071: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1072: cp++;
1.160 schwarze 1073: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1074: break;
1075: }
1076:
1.161 schwarze 1077: /* Skip trailing backslash. */
1078:
1079: sz = strlen(cp);
1.162 schwarze 1080: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1081: sz--;
1082:
1.141 schwarze 1083: /* Skip trailing whitespace. */
1084:
1.161 schwarze 1085: for (; sz; sz--)
1.141 schwarze 1086: if ( ! isspace((unsigned char)cp[sz-1]))
1087: break;
1088:
1089: /* Skip empty strings. */
1090:
1091: if (sz == 0)
1092: return;
1093:
1094: if (*dest == NULL) {
1095: *dest = mandoc_strndup(cp, sz);
1096: return;
1097: }
1098:
1099: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1100: free(*dest);
1101: *dest = cp;
1.138 schwarze 1102: }
1103:
1104: /* --- main functions of the roff parser ---------------------------------- */
1105:
1.8 schwarze 1106: /*
1.79 schwarze 1107: * In the current line, expand escape sequences that tend to get
1108: * used in numerical expressions and conditional requests.
1109: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1110: */
1.45 schwarze 1111: static enum rofferr
1.110 schwarze 1112: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1113: {
1.81 schwarze 1114: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1115: const char *start; /* start of the string to process */
1.82 schwarze 1116: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1117: const char *stnam; /* start of the name, after "[(*" */
1118: const char *cp; /* end of the name, e.g. before ']' */
1119: const char *res; /* the string to be substituted */
1.110 schwarze 1120: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1121: size_t maxl; /* expected length of the escape name */
1122: size_t naml; /* actual length of the escape name */
1.109 schwarze 1123: enum mandoc_esc esc; /* type of the escape sequence */
1.188 schwarze 1124: enum mandoc_os os_e; /* kind of RCS id seen */
1.109 schwarze 1125: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1126: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1127: int npos; /* position in numeric expression */
1.91 schwarze 1128: int arg_complete; /* argument not interrupted by eol */
1.175 schwarze 1129: int done; /* no more input available */
1.187 schwarze 1130: int deftype; /* type of definition to paste */
1.79 schwarze 1131: char term; /* character terminating the escape */
1.8 schwarze 1132:
1.175 schwarze 1133: /* Search forward for comments. */
1134:
1135: done = 0;
1136: start = buf->buf + pos;
1137: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1138: if (stesc[0] != r->escape || stesc[1] == '\0')
1139: continue;
1140: stesc++;
1141: if (*stesc != '"' && *stesc != '#')
1142: continue;
1.185 schwarze 1143:
1144: /* Comment found, look for RCS id. */
1145:
1146: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.188 schwarze 1147: os_e = MANDOC_OS_OPENBSD;
1.185 schwarze 1148: cp += 8;
1149: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.188 schwarze 1150: os_e = MANDOC_OS_NETBSD;
1.185 schwarze 1151: cp += 7;
1152: }
1153: if (cp != NULL &&
1154: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1155: strchr(cp, '$') != NULL) {
1156: if (r->man->meta.rcsids & (1 << os_e))
1157: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1158: ln, stesc + 1 - buf->buf, stesc + 1);
1.185 schwarze 1159: r->man->meta.rcsids |= 1 << os_e;
1.186 schwarze 1160: }
1.185 schwarze 1161:
1162: /* Handle trailing whitespace. */
1163:
1.175 schwarze 1164: cp = strchr(stesc--, '\0') - 1;
1165: if (*cp == '\n') {
1166: done = 1;
1167: cp--;
1168: }
1169: if (*cp == ' ' || *cp == '\t')
1170: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1171: ln, cp - buf->buf, NULL);
1172: while (stesc > start && stesc[-1] == ' ')
1173: stesc--;
1174: *stesc = '\0';
1175: break;
1176: }
1177: if (stesc == start)
1178: return ROFF_CONT;
1179: stesc--;
1180:
1181: /* Notice the end of the input. */
1182:
1183: if (*stesc == '\n') {
1184: *stesc-- = '\0';
1185: done = 1;
1186: }
1187:
1.43 schwarze 1188: expand_count = 0;
1.175 schwarze 1189: while (stesc >= start) {
1.43 schwarze 1190:
1.78 schwarze 1191: /* Search backwards for the next backslash. */
1192:
1.175 schwarze 1193: if (*stesc != r->escape) {
1194: if (*stesc == '\\') {
1195: *stesc = '\0';
1196: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1197: buf->buf, stesc + 1) + 1;
1198: start = nbuf + pos;
1199: stesc = nbuf + (stesc - buf->buf);
1200: free(buf->buf);
1201: buf->buf = nbuf;
1202: }
1203: stesc--;
1.78 schwarze 1204: continue;
1.175 schwarze 1205: }
1.78 schwarze 1206:
1207: /* If it is escaped, skip it. */
1208:
1209: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1210: if (*cp != r->escape)
1.78 schwarze 1211: break;
1212:
1.110 schwarze 1213: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1214: while (stesc > cp)
1215: *stesc-- = '\\';
1.78 schwarze 1216: continue;
1.175 schwarze 1217: } else if (stesc[1] != '\0') {
1218: *stesc = '\\';
1219: } else {
1220: *stesc-- = '\0';
1221: if (done)
1222: continue;
1223: else
1224: return ROFF_APPEND;
1.78 schwarze 1225: }
1.23 schwarze 1226:
1.79 schwarze 1227: /* Decide whether to expand or to check only. */
1.23 schwarze 1228:
1.79 schwarze 1229: term = '\0';
1.78 schwarze 1230: cp = stesc + 1;
1.53 schwarze 1231: switch (*cp) {
1.80 schwarze 1232: case '*':
1.53 schwarze 1233: res = NULL;
1234: break;
1.80 schwarze 1235: case 'B':
1236: case 'w':
1.79 schwarze 1237: term = cp[1];
1238: /* FALLTHROUGH */
1.80 schwarze 1239: case 'n':
1.53 schwarze 1240: res = ubuf;
1241: break;
1242: default:
1.109 schwarze 1243: esc = mandoc_escape(&cp, &stnam, &inaml);
1244: if (esc == ESCAPE_ERROR ||
1245: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1246: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1247: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1248: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1249: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1250: stesc--;
1.78 schwarze 1251: continue;
1.42 schwarze 1252: }
1253:
1.78 schwarze 1254: if (EXPAND_LIMIT < ++expand_count) {
1255: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1256: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1257: return ROFF_IGN;
1.78 schwarze 1258: }
1.23 schwarze 1259:
1260: /*
1261: * The third character decides the length
1.53 schwarze 1262: * of the name of the string or register.
1.23 schwarze 1263: * Save a pointer to the name.
1264: */
1265:
1.110 schwarze 1266: if (term == '\0') {
1.79 schwarze 1267: switch (*++cp) {
1.80 schwarze 1268: case '\0':
1.79 schwarze 1269: maxl = 0;
1270: break;
1.80 schwarze 1271: case '(':
1.79 schwarze 1272: cp++;
1273: maxl = 2;
1274: break;
1.80 schwarze 1275: case '[':
1.79 schwarze 1276: cp++;
1277: term = ']';
1278: maxl = 0;
1279: break;
1280: default:
1281: maxl = 1;
1282: break;
1283: }
1284: } else {
1285: cp += 2;
1.8 schwarze 1286: maxl = 0;
1287: }
1.23 schwarze 1288: stnam = cp;
1.8 schwarze 1289:
1.23 schwarze 1290: /* Advance to the end of the name. */
1.8 schwarze 1291:
1.125 schwarze 1292: naml = 0;
1.91 schwarze 1293: arg_complete = 1;
1.125 schwarze 1294: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1295: if (*cp == '\0') {
1.92 schwarze 1296: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1297: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1298: arg_complete = 0;
1.79 schwarze 1299: break;
1.42 schwarze 1300: }
1.110 schwarze 1301: if (maxl == 0 && *cp == term) {
1.79 schwarze 1302: cp++;
1.125 schwarze 1303: break;
1304: }
1305: if (*cp++ != '\\' || stesc[1] != 'w') {
1306: naml++;
1307: continue;
1308: }
1309: switch (mandoc_escape(&cp, NULL, NULL)) {
1310: case ESCAPE_SPECIAL:
1311: case ESCAPE_UNICODE:
1312: case ESCAPE_NUMBERED:
1313: case ESCAPE_OVERSTRIKE:
1314: naml++;
1315: break;
1316: default:
1.8 schwarze 1317: break;
1.79 schwarze 1318: }
1.8 schwarze 1319: }
1320:
1.23 schwarze 1321: /*
1322: * Retrieve the replacement string; if it is
1323: * undefined, resume searching for escapes.
1324: */
1325:
1.79 schwarze 1326: switch (stesc[1]) {
1.80 schwarze 1327: case '*':
1.187 schwarze 1328: if (arg_complete) {
1329: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1330: res = roff_getstrn(r, stnam, naml, &deftype);
1331: }
1.79 schwarze 1332: break;
1.80 schwarze 1333: case 'B':
1.79 schwarze 1334: npos = 0;
1.91 schwarze 1335: ubuf[0] = arg_complete &&
1.133 schwarze 1336: roff_evalnum(r, ln, stnam, &npos,
1337: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1338: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1339: ubuf[1] = '\0';
1340: break;
1.80 schwarze 1341: case 'n':
1.91 schwarze 1342: if (arg_complete)
1343: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1344: roff_getregn(r, stnam, naml));
1345: else
1346: ubuf[0] = '\0';
1.79 schwarze 1347: break;
1.80 schwarze 1348: case 'w':
1.91 schwarze 1349: /* use even incomplete args */
1.81 schwarze 1350: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1351: 24 * (int)naml);
1352: break;
1353: }
1.8 schwarze 1354:
1.110 schwarze 1355: if (res == NULL) {
1.92 schwarze 1356: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1357: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1358: "%.*s", (int)naml, stnam);
1.37 schwarze 1359: res = "";
1.118 schwarze 1360: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1361: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1362: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1363: return ROFF_IGN;
1.8 schwarze 1364: }
1365:
1.23 schwarze 1366: /* Replace the escape sequence by the string. */
1367:
1.82 schwarze 1368: *stesc = '\0';
1.110 schwarze 1369: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1370: buf->buf, res, cp) + 1;
1.8 schwarze 1371:
1.78 schwarze 1372: /* Prepare for the next replacement. */
1.8 schwarze 1373:
1.78 schwarze 1374: start = nbuf + pos;
1.110 schwarze 1375: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1376: free(buf->buf);
1377: buf->buf = nbuf;
1.42 schwarze 1378: }
1.149 schwarze 1379: return ROFF_CONT;
1.42 schwarze 1380: }
1381:
1382: /*
1.147 schwarze 1383: * Process text streams.
1.42 schwarze 1384: */
1385: static enum rofferr
1.177 schwarze 1386: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1387: {
1388: size_t sz;
1389: const char *start;
1.51 schwarze 1390: char *p;
1391: int isz;
1.42 schwarze 1392: enum mandoc_esc esc;
1393:
1.147 schwarze 1394: /* Spring the input line trap. */
1395:
1396: if (roffit_lines == 1) {
1397: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1398: free(buf->buf);
1399: buf->buf = p;
1400: buf->sz = isz + 1;
1401: *offs = 0;
1402: free(roffit_macro);
1403: roffit_lines = 0;
1.149 schwarze 1404: return ROFF_REPARSE;
1.147 schwarze 1405: } else if (roffit_lines > 1)
1406: --roffit_lines;
1407:
1.177 schwarze 1408: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1409: if (roffce_lines < 1) {
1410: r->man->last = roffce_node;
1411: r->man->next = ROFF_NEXT_SIBLING;
1412: roffce_lines = 0;
1413: roffce_node = NULL;
1414: } else
1415: roffce_lines--;
1416: }
1417:
1.147 schwarze 1418: /* Convert all breakable hyphens into ASCII_HYPH. */
1419:
1.110 schwarze 1420: start = p = buf->buf + pos;
1.42 schwarze 1421:
1.110 schwarze 1422: while (*p != '\0') {
1.42 schwarze 1423: sz = strcspn(p, "-\\");
1424: p += sz;
1425:
1.110 schwarze 1426: if (*p == '\0')
1.42 schwarze 1427: break;
1428:
1.110 schwarze 1429: if (*p == '\\') {
1.42 schwarze 1430: /* Skip over escapes. */
1431: p++;
1.62 schwarze 1432: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1433: if (esc == ESCAPE_ERROR)
1.42 schwarze 1434: break;
1.136 schwarze 1435: while (*p == '-')
1436: p++;
1.42 schwarze 1437: continue;
1438: } else if (p == start) {
1439: p++;
1440: continue;
1441: }
1442:
1.44 schwarze 1443: if (isalpha((unsigned char)p[-1]) &&
1444: isalpha((unsigned char)p[1]))
1.42 schwarze 1445: *p = ASCII_HYPH;
1446: p++;
1.8 schwarze 1447: }
1.149 schwarze 1448: return ROFF_CONT;
1.8 schwarze 1449: }
1450:
1.1 schwarze 1451: enum rofferr
1.110 schwarze 1452: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1453: {
1.166 schwarze 1454: enum roff_tok t;
1.27 schwarze 1455: enum rofferr e;
1.110 schwarze 1456: int pos; /* parse point */
1.115 schwarze 1457: int spos; /* saved parse point for messages */
1.110 schwarze 1458: int ppos; /* original offset in buf->buf */
1459: int ctl; /* macro line (boolean) */
1460:
1461: ppos = pos = *offs;
1.1 schwarze 1462:
1.102 schwarze 1463: /* Handle in-line equation delimiters. */
1464:
1.108 schwarze 1465: if (r->tbl == NULL &&
1466: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1467: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1468: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1469: if (e == ROFF_REPARSE)
1.149 schwarze 1470: return e;
1.102 schwarze 1471: assert(e == ROFF_CONT);
1472: }
1473:
1474: /* Expand some escape sequences. */
1.8 schwarze 1475:
1.110 schwarze 1476: e = roff_res(r, buf, ln, pos);
1.175 schwarze 1477: if (e == ROFF_IGN || e == ROFF_APPEND)
1.149 schwarze 1478: return e;
1.110 schwarze 1479: assert(e == ROFF_CONT);
1.8 schwarze 1480:
1.110 schwarze 1481: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1482:
1.8 schwarze 1483: /*
1.2 schwarze 1484: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1485: * text through the macro's filter.
1486: * Equations process all content themselves.
1487: * Tables process almost all content themselves, but we want
1488: * to warn about macros before passing it there.
1.2 schwarze 1489: */
1490:
1.124 schwarze 1491: if (r->last != NULL && ! ctl) {
1.2 schwarze 1492: t = r->last->tok;
1.110 schwarze 1493: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.166 schwarze 1494: if (e == ROFF_IGN)
1.149 schwarze 1495: return e;
1.166 schwarze 1496: assert(e == ROFF_CONT);
1.54 schwarze 1497: }
1.191 schwarze 1498: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1499: eqn_read(r->eqn, buf->buf + ppos);
1500: return ROFF_IGN;
1501: }
1.124 schwarze 1502: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.149 schwarze 1503: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.124 schwarze 1504: if ( ! ctl)
1.177 schwarze 1505: return roff_parsetext(r, buf, pos, offs);
1.100 schwarze 1506:
1507: /* Skip empty request lines. */
1508:
1.110 schwarze 1509: if (buf->buf[pos] == '"') {
1.100 schwarze 1510: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1511: ln, pos, NULL);
1.149 schwarze 1512: return ROFF_IGN;
1.110 schwarze 1513: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1514: return ROFF_IGN;
1.2 schwarze 1515:
1516: /*
1517: * If a scope is open, go to the child handler for that macro,
1518: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1519: * Don't do so if an equation is open.
1.2 schwarze 1520: */
1521:
1522: if (r->last) {
1.1 schwarze 1523: t = r->last->tok;
1.149 schwarze 1524: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1525: }
1526:
1.115 schwarze 1527: /* No scope is open. This is a new request or macro. */
1528:
1529: spos = pos;
1530: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1531:
1532: /* Tables ignore most macros. */
1533:
1.180 schwarze 1534: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1535: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.115 schwarze 1536: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1537: ln, pos, buf->buf + spos);
1.180 schwarze 1538: if (t != TOKEN_NONE)
1.149 schwarze 1539: return ROFF_IGN;
1.129 schwarze 1540: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1541: pos++;
1.163 schwarze 1542: while (buf->buf[pos] == ' ')
1.129 schwarze 1543: pos++;
1.149 schwarze 1544: return tbl_read(r->tbl, ln, buf->buf, pos);
1.115 schwarze 1545: }
1546:
1.177 schwarze 1547: /* For now, let high level macros abort .ce mode. */
1548:
1549: if (ctl && roffce_node != NULL &&
1550: (t == TOKEN_NONE || t == ROFF_EQ || t == ROFF_TS)) {
1551: r->man->last = roffce_node;
1552: r->man->next = ROFF_NEXT_SIBLING;
1553: roffce_lines = 0;
1554: roffce_node = NULL;
1555: }
1556:
1.2 schwarze 1557: /*
1.115 schwarze 1558: * This is neither a roff request nor a user-defined macro.
1559: * Let the standard macro set parsers handle it.
1.2 schwarze 1560: */
1561:
1.166 schwarze 1562: if (t == TOKEN_NONE)
1.149 schwarze 1563: return ROFF_CONT;
1.115 schwarze 1564:
1565: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1566:
1.168 schwarze 1567: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1568: }
1569:
1.27 schwarze 1570: void
1.2 schwarze 1571: roff_endparse(struct roff *r)
1572: {
1.1 schwarze 1573:
1.27 schwarze 1574: if (r->last)
1.94 schwarze 1575: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1576: r->last->line, r->last->col,
1.167 schwarze 1577: roff_name[r->last->tok]);
1.27 schwarze 1578:
1.32 schwarze 1579: if (r->eqn) {
1.94 schwarze 1580: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.191 schwarze 1581: r->eqn->node->line, r->eqn->node->pos, "EQ");
1582: eqn_parse(r->eqn);
1583: r->eqn = NULL;
1.32 schwarze 1584: }
1585:
1.27 schwarze 1586: if (r->tbl) {
1.94 schwarze 1587: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1588: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1589: tbl_end(&r->tbl);
1.27 schwarze 1590: }
1.1 schwarze 1591: }
1592:
1593: /*
1594: * Parse a roff node's type from the input buffer. This must be in the
1595: * form of ".foo xxx" in the usual way.
1596: */
1.166 schwarze 1597: static enum roff_tok
1.87 schwarze 1598: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1599: {
1.87 schwarze 1600: char *cp;
1.16 schwarze 1601: const char *mac;
1602: size_t maclen;
1.187 schwarze 1603: int deftype;
1.166 schwarze 1604: enum roff_tok t;
1.1 schwarze 1605:
1.87 schwarze 1606: cp = buf + *pos;
1607:
1608: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1609: return TOKEN_NONE;
1.1 schwarze 1610:
1.87 schwarze 1611: mac = cp;
1612: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1613:
1.187 schwarze 1614: deftype = ROFFDEF_USER | ROFFDEF_REN;
1615: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1616: switch (deftype) {
1617: case ROFFDEF_USER:
1618: t = ROFF_USERDEF;
1619: break;
1620: case ROFFDEF_REN:
1621: t = ROFF_RENAMED;
1622: break;
1623: default:
1624: t = roffhash_find(r->reqtab, mac, maclen);
1625: break;
1626: }
1.166 schwarze 1627: if (t != TOKEN_NONE)
1.87 schwarze 1628: *pos = cp - buf;
1.149 schwarze 1629: return t;
1.1 schwarze 1630: }
1631:
1.138 schwarze 1632: /* --- handling of request blocks ----------------------------------------- */
1633:
1.1 schwarze 1634: static enum rofferr
1.2 schwarze 1635: roff_cblock(ROFF_ARGS)
1.1 schwarze 1636: {
1637:
1.2 schwarze 1638: /*
1639: * A block-close `..' should only be invoked as a child of an
1640: * ignore macro, otherwise raise a warning and just ignore it.
1641: */
1642:
1.110 schwarze 1643: if (r->last == NULL) {
1.94 schwarze 1644: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1645: ln, ppos, "..");
1.149 schwarze 1646: return ROFF_IGN;
1.2 schwarze 1647: }
1.1 schwarze 1648:
1.2 schwarze 1649: switch (r->last->tok) {
1.80 schwarze 1650: case ROFF_am:
1.93 schwarze 1651: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1652: case ROFF_ami:
1653: case ROFF_de:
1.23 schwarze 1654: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1655: case ROFF_dei:
1656: case ROFF_ig:
1.2 schwarze 1657: break;
1658: default:
1.94 schwarze 1659: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1660: ln, ppos, "..");
1.149 schwarze 1661: return ROFF_IGN;
1.2 schwarze 1662: }
1663:
1.110 schwarze 1664: if (buf->buf[pos] != '\0')
1.90 schwarze 1665: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1666: ".. %s", buf->buf + pos);
1.2 schwarze 1667:
1668: roffnode_pop(r);
1669: roffnode_cleanscope(r);
1.149 schwarze 1670: return ROFF_IGN;
1.2 schwarze 1671:
1672: }
1.1 schwarze 1673:
1.2 schwarze 1674: static void
1675: roffnode_cleanscope(struct roff *r)
1676: {
1.1 schwarze 1677:
1.2 schwarze 1678: while (r->last) {
1.46 schwarze 1679: if (--r->last->endspan != 0)
1.2 schwarze 1680: break;
1681: roffnode_pop(r);
1682: }
1683: }
1.1 schwarze 1684:
1.68 schwarze 1685: static void
1686: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1687: {
1.1 schwarze 1688:
1.2 schwarze 1689: if (NULL == r->last) {
1.94 schwarze 1690: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1691: ln, ppos, "\\}");
1.68 schwarze 1692: return;
1.2 schwarze 1693: }
1.1 schwarze 1694:
1.2 schwarze 1695: switch (r->last->tok) {
1.80 schwarze 1696: case ROFF_el:
1697: case ROFF_ie:
1698: case ROFF_if:
1.2 schwarze 1699: break;
1700: default:
1.94 schwarze 1701: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1702: ln, ppos, "\\}");
1.68 schwarze 1703: return;
1.2 schwarze 1704: }
1.1 schwarze 1705:
1.2 schwarze 1706: if (r->last->endspan > -1) {
1.94 schwarze 1707: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1708: ln, ppos, "\\}");
1.68 schwarze 1709: return;
1.2 schwarze 1710: }
1711:
1712: roffnode_pop(r);
1713: roffnode_cleanscope(r);
1.68 schwarze 1714: return;
1.1 schwarze 1715: }
1716:
1717: static enum rofferr
1.2 schwarze 1718: roff_block(ROFF_ARGS)
1.1 schwarze 1719: {
1.187 schwarze 1720: const char *name, *value;
1721: char *call, *cp, *iname, *rname;
1722: size_t csz, namesz, rsz;
1723: int deftype;
1.16 schwarze 1724:
1.93 schwarze 1725: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1726:
1.110 schwarze 1727: if (tok == ROFF_de1)
1.93 schwarze 1728: tok = ROFF_de;
1.123 schwarze 1729: else if (tok == ROFF_dei1)
1730: tok = ROFF_dei;
1.110 schwarze 1731: else if (tok == ROFF_am1)
1.93 schwarze 1732: tok = ROFF_am;
1.123 schwarze 1733: else if (tok == ROFF_ami1)
1734: tok = ROFF_ami;
1.93 schwarze 1735:
1736: /* Parse the macro name argument. */
1737:
1.110 schwarze 1738: cp = buf->buf + pos;
1739: if (tok == ROFF_ig) {
1.93 schwarze 1740: iname = NULL;
1741: namesz = 0;
1742: } else {
1743: iname = cp;
1744: namesz = roff_getname(r, &cp, ln, ppos);
1745: iname[namesz] = '\0';
1746: }
1.22 schwarze 1747:
1.93 schwarze 1748: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1749:
1.110 schwarze 1750: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1751: deftype = ROFFDEF_USER;
1752: name = roff_getstrn(r, iname, namesz, &deftype);
1753: if (name == NULL) {
1.93 schwarze 1754: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1755: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1756: "%.*s", (int)namesz, iname);
1757: namesz = 0;
1758: } else
1759: namesz = strlen(name);
1760: } else
1761: name = iname;
1.22 schwarze 1762:
1.110 schwarze 1763: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1764: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1765: ln, ppos, roff_name[tok]);
1.149 schwarze 1766: return ROFF_IGN;
1.93 schwarze 1767: }
1.2 schwarze 1768:
1.16 schwarze 1769: roffnode_push(r, tok, name, ln, ppos);
1770:
1771: /*
1772: * At the beginning of a `de' macro, clear the existing string
1773: * with the same name, if there is one. New content will be
1.66 schwarze 1774: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1775: */
1.22 schwarze 1776:
1.183 schwarze 1777: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 1778: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 1779: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 1780: } else if (tok == ROFF_am || tok == ROFF_ami) {
1781: deftype = ROFFDEF_ANY;
1782: value = roff_getstrn(r, iname, namesz, &deftype);
1783: switch (deftype) { /* Before appending, ... */
1784: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1785: roff_setstrn(&r->strtab, name, namesz,
1786: value, strlen(value), 0);
1787: break;
1788: case ROFFDEF_REN: /* call original standard macro. */
1789: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1790: (int)strlen(value), value);
1791: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1792: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1793: free(call);
1794: break;
1795: case ROFFDEF_STD: /* rename and call standard macro. */
1796: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1797: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1798: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1799: (int)rsz, rname);
1800: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1801: free(call);
1802: free(rname);
1803: break;
1804: default:
1805: break;
1806: }
1.183 schwarze 1807: }
1.2 schwarze 1808:
1.110 schwarze 1809: if (*cp == '\0')
1.149 schwarze 1810: return ROFF_IGN;
1.1 schwarze 1811:
1.93 schwarze 1812: /* Get the custom end marker. */
1.22 schwarze 1813:
1.93 schwarze 1814: iname = cp;
1.86 schwarze 1815: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1816:
1817: /* Resolve the end marker if it is indirect. */
1818:
1.110 schwarze 1819: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1820: deftype = ROFFDEF_USER;
1821: name = roff_getstrn(r, iname, namesz, &deftype);
1822: if (name == NULL) {
1.93 schwarze 1823: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1824: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1825: "%.*s", (int)namesz, iname);
1826: namesz = 0;
1827: } else
1828: namesz = strlen(name);
1829: } else
1830: name = iname;
1831:
1.86 schwarze 1832: if (namesz)
1833: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1834:
1.110 schwarze 1835: if (*cp != '\0')
1.90 schwarze 1836: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 1837: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 1838:
1.149 schwarze 1839: return ROFF_IGN;
1.1 schwarze 1840: }
1841:
1842: static enum rofferr
1.2 schwarze 1843: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1844: {
1.166 schwarze 1845: enum roff_tok t;
1.2 schwarze 1846: int i, j;
1847:
1848: /*
1849: * First check whether a custom macro exists at this level. If
1850: * it does, then check against it. This is some of groff's
1851: * stranger behaviours. If we encountered a custom end-scope
1852: * tag and that tag also happens to be a "real" macro, then we
1853: * need to try interpreting it again as a real macro. If it's
1854: * not, then return ignore. Else continue.
1855: */
1856:
1857: if (r->last->end) {
1.35 schwarze 1858: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1859: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1860: break;
1.1 schwarze 1861:
1.110 schwarze 1862: if (r->last->end[j] == '\0' &&
1863: (buf->buf[i] == '\0' ||
1864: buf->buf[i] == ' ' ||
1865: buf->buf[i] == '\t')) {
1.2 schwarze 1866: roffnode_pop(r);
1867: roffnode_cleanscope(r);
1.1 schwarze 1868:
1.110 schwarze 1869: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1870: i++;
1871:
1872: pos = i;
1.110 schwarze 1873: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 1874: TOKEN_NONE)
1.149 schwarze 1875: return ROFF_RERUN;
1876: return ROFF_IGN;
1.2 schwarze 1877: }
1.1 schwarze 1878: }
1879:
1.2 schwarze 1880: /*
1881: * If we have no custom end-query or lookup failed, then try
1882: * pulling it out of the hashtable.
1883: */
1.1 schwarze 1884:
1.110 schwarze 1885: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1886:
1.110 schwarze 1887: if (t != ROFF_cblock) {
1888: if (tok != ROFF_ig)
1889: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1890: return ROFF_IGN;
1.16 schwarze 1891: }
1.1 schwarze 1892:
1.149 schwarze 1893: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1894: }
1895:
1896: static enum rofferr
1897: roff_block_text(ROFF_ARGS)
1898: {
1899:
1.110 schwarze 1900: if (tok != ROFF_ig)
1901: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1902:
1.149 schwarze 1903: return ROFF_IGN;
1.2 schwarze 1904: }
1905:
1906: static enum rofferr
1907: roff_cond_sub(ROFF_ARGS)
1908: {
1.166 schwarze 1909: enum roff_tok t;
1.37 schwarze 1910: char *ep;
1.71 schwarze 1911: int rr;
1.2 schwarze 1912:
1913: rr = r->last->rule;
1.37 schwarze 1914: roffnode_cleanscope(r);
1.39 schwarze 1915:
1.69 schwarze 1916: /*
1917: * If `\}' occurs on a macro line without a preceding macro,
1918: * drop the line completely.
1919: */
1920:
1.110 schwarze 1921: ep = buf->buf + pos;
1922: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1923: rr = 0;
1.69 schwarze 1924:
1.50 schwarze 1925: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1926:
1.110 schwarze 1927: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 1928: switch (ep[1]) {
1929: case '}':
1930: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1931: roff_ccond(r, ln, ep - buf->buf);
1932: break;
1933: case '\0':
1934: ++ep;
1935: break;
1936: default:
1937: ep += 2;
1938: break;
1.70 schwarze 1939: }
1.50 schwarze 1940: }
1.190 schwarze 1941:
1942: /*
1943: * Fully handle known macros when they are structurally
1944: * required or when the conditional evaluated to true.
1945: */
1946:
1947: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1948: return t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT)
1949: ? (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) : rr
1950: ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1951: }
1952:
1953: static enum rofferr
1954: roff_cond_text(ROFF_ARGS)
1955: {
1.37 schwarze 1956: char *ep;
1.71 schwarze 1957: int rr;
1.2 schwarze 1958:
1959: rr = r->last->rule;
1.37 schwarze 1960: roffnode_cleanscope(r);
1.1 schwarze 1961:
1.110 schwarze 1962: ep = buf->buf + pos;
1963: while ((ep = strchr(ep, '\\')) != NULL) {
1964: if (*(++ep) == '}') {
1.70 schwarze 1965: *ep = '&';
1.110 schwarze 1966: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1967: }
1.119 schwarze 1968: if (*ep != '\0')
1969: ++ep;
1.2 schwarze 1970: }
1.149 schwarze 1971: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1972: }
1973:
1.138 schwarze 1974: /* --- handling of numeric and conditional expressions -------------------- */
1975:
1.77 schwarze 1976: /*
1977: * Parse a single signed integer number. Stop at the first non-digit.
1978: * If there is at least one digit, return success and advance the
1979: * parse point, else return failure and let the parse point unchanged.
1980: * Ignore overflows, treat them just like the C language.
1981: */
1.56 schwarze 1982: static int
1.133 schwarze 1983: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 1984: {
1.133 schwarze 1985: int myres, scaled, n, p;
1.79 schwarze 1986:
1987: if (NULL == res)
1988: res = &myres;
1.56 schwarze 1989:
1990: p = *pos;
1991: n = v[p] == '-';
1.133 schwarze 1992: if (n || v[p] == '+')
1.56 schwarze 1993: p++;
1994:
1.133 schwarze 1995: if (flags & ROFFNUM_WHITE)
1996: while (isspace((unsigned char)v[p]))
1997: p++;
1998:
1.56 schwarze 1999: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2000: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2001: if (p == *pos + n)
2002: return 0;
2003:
2004: if (n)
2005: *res = -*res;
2006:
1.126 schwarze 2007: /* Each number may be followed by one optional scaling unit. */
2008:
2009: switch (v[p]) {
2010: case 'f':
1.133 schwarze 2011: scaled = *res * 65536;
1.126 schwarze 2012: break;
2013: case 'i':
1.133 schwarze 2014: scaled = *res * 240;
1.126 schwarze 2015: break;
2016: case 'c':
1.133 schwarze 2017: scaled = *res * 240 / 2.54;
1.126 schwarze 2018: break;
2019: case 'v':
2020: case 'P':
1.133 schwarze 2021: scaled = *res * 40;
1.126 schwarze 2022: break;
2023: case 'm':
2024: case 'n':
1.133 schwarze 2025: scaled = *res * 24;
1.126 schwarze 2026: break;
2027: case 'p':
1.133 schwarze 2028: scaled = *res * 10 / 3;
1.126 schwarze 2029: break;
2030: case 'u':
1.133 schwarze 2031: scaled = *res;
1.126 schwarze 2032: break;
2033: case 'M':
1.133 schwarze 2034: scaled = *res * 6 / 25;
1.126 schwarze 2035: break;
2036: default:
1.133 schwarze 2037: scaled = *res;
1.126 schwarze 2038: p--;
2039: break;
2040: }
1.133 schwarze 2041: if (flags & ROFFNUM_SCALE)
2042: *res = scaled;
1.126 schwarze 2043:
2044: *pos = p + 1;
1.149 schwarze 2045: return 1;
1.56 schwarze 2046: }
2047:
1.71 schwarze 2048: /*
2049: * Evaluate a string comparison condition.
2050: * The first character is the delimiter.
2051: * Succeed if the string up to its second occurrence
2052: * matches the string up to its third occurence.
2053: * Advance the cursor after the third occurrence
2054: * or lacking that, to the end of the line.
2055: */
2056: static int
2057: roff_evalstrcond(const char *v, int *pos)
2058: {
2059: const char *s1, *s2, *s3;
2060: int match;
2061:
2062: match = 0;
2063: s1 = v + *pos; /* initial delimiter */
2064: s2 = s1 + 1; /* for scanning the first string */
2065: s3 = strchr(s2, *s1); /* for scanning the second string */
2066:
2067: if (NULL == s3) /* found no middle delimiter */
2068: goto out;
2069:
2070: while ('\0' != *++s3) {
2071: if (*s2 != *s3) { /* mismatch */
2072: s3 = strchr(s3, *s1);
2073: break;
2074: }
2075: if (*s3 == *s1) { /* found the final delimiter */
2076: match = 1;
2077: break;
2078: }
2079: s2++;
2080: }
2081:
2082: out:
2083: if (NULL == s3)
2084: s3 = strchr(s2, '\0');
1.114 schwarze 2085: else if (*s3 != '\0')
1.71 schwarze 2086: s3++;
2087: *pos = s3 - v;
1.149 schwarze 2088: return match;
1.71 schwarze 2089: }
2090:
1.77 schwarze 2091: /*
2092: * Evaluate an optionally negated single character, numerical,
2093: * or string condition.
2094: */
1.71 schwarze 2095: static int
1.143 schwarze 2096: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2097: {
1.143 schwarze 2098: char *cp, *name;
2099: size_t sz;
1.187 schwarze 2100: int deftype, number, savepos, istrue, wanttrue;
1.5 schwarze 2101:
1.71 schwarze 2102: if ('!' == v[*pos]) {
2103: wanttrue = 0;
2104: (*pos)++;
2105: } else
2106: wanttrue = 1;
2107:
1.5 schwarze 2108: switch (v[*pos]) {
1.112 schwarze 2109: case '\0':
1.149 schwarze 2110: return 0;
1.80 schwarze 2111: case 'n':
2112: case 'o':
1.5 schwarze 2113: (*pos)++;
1.149 schwarze 2114: return wanttrue;
1.80 schwarze 2115: case 'c':
2116: case 'e':
2117: case 't':
1.111 schwarze 2118: case 'v':
1.5 schwarze 2119: (*pos)++;
1.149 schwarze 2120: return !wanttrue;
1.182 schwarze 2121: case 'd':
1.143 schwarze 2122: case 'r':
1.182 schwarze 2123: cp = v + *pos + 1;
2124: while (*cp == ' ')
2125: cp++;
2126: name = cp;
2127: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2128: if (sz == 0)
2129: istrue = 0;
2130: else if (v[*pos] == 'r')
2131: istrue = roff_hasregn(r, name, sz);
2132: else {
2133: deftype = ROFFDEF_ANY;
2134: roff_getstrn(r, name, sz, &deftype);
2135: istrue = !!deftype;
2136: }
1.143 schwarze 2137: *pos = cp - v;
1.182 schwarze 2138: return istrue == wanttrue;
1.5 schwarze 2139: default:
2140: break;
2141: }
2142:
1.113 schwarze 2143: savepos = *pos;
1.133 schwarze 2144: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2145: return (number > 0) == wanttrue;
1.113 schwarze 2146: else if (*pos == savepos)
1.149 schwarze 2147: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2148: else
1.149 schwarze 2149: return 0;
1.5 schwarze 2150: }
2151:
1.2 schwarze 2152: static enum rofferr
1.21 schwarze 2153: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2154: {
1.30 schwarze 2155:
1.149 schwarze 2156: return ROFF_IGN;
1.21 schwarze 2157: }
2158:
2159: static enum rofferr
1.123 schwarze 2160: roff_insec(ROFF_ARGS)
2161: {
2162:
2163: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2164: ln, ppos, roff_name[tok]);
1.149 schwarze 2165: return ROFF_IGN;
1.123 schwarze 2166: }
2167:
2168: static enum rofferr
2169: roff_unsupp(ROFF_ARGS)
2170: {
2171:
2172: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2173: ln, ppos, roff_name[tok]);
1.149 schwarze 2174: return ROFF_IGN;
1.123 schwarze 2175: }
2176:
2177: static enum rofferr
1.2 schwarze 2178: roff_cond(ROFF_ARGS)
2179: {
1.46 schwarze 2180:
2181: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2182:
1.80 schwarze 2183: /*
1.35 schwarze 2184: * An `.el' has no conditional body: it will consume the value
2185: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2186: * defaults to DENY.
1.35 schwarze 2187: *
2188: * If we're not an `el', however, then evaluate the conditional.
2189: */
1.1 schwarze 2190:
1.110 schwarze 2191: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2192: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2193: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2194:
1.35 schwarze 2195: /*
2196: * An if-else will put the NEGATION of the current evaluated
2197: * conditional into the stack of rules.
2198: */
2199:
1.110 schwarze 2200: if (tok == ROFF_ie) {
1.96 schwarze 2201: if (r->rstackpos + 1 == r->rstacksz) {
2202: r->rstacksz += 16;
2203: r->rstack = mandoc_reallocarray(r->rstack,
2204: r->rstacksz, sizeof(int));
1.35 schwarze 2205: }
1.71 schwarze 2206: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2207: }
1.5 schwarze 2208:
2209: /* If the parent has false as its rule, then so do we. */
2210:
1.71 schwarze 2211: if (r->last->parent && !r->last->parent->rule)
2212: r->last->rule = 0;
1.5 schwarze 2213:
2214: /*
1.46 schwarze 2215: * Determine scope.
2216: * If there is nothing on the line after the conditional,
2217: * not even whitespace, use next-line scope.
1.5 schwarze 2218: */
1.2 schwarze 2219:
1.110 schwarze 2220: if (buf->buf[pos] == '\0') {
1.46 schwarze 2221: r->last->endspan = 2;
2222: goto out;
2223: }
2224:
1.110 schwarze 2225: while (buf->buf[pos] == ' ')
1.46 schwarze 2226: pos++;
2227:
2228: /* An opening brace requests multiline scope. */
1.2 schwarze 2229:
1.110 schwarze 2230: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2231: r->last->endspan = -1;
2232: pos += 2;
1.144 schwarze 2233: while (buf->buf[pos] == ' ')
2234: pos++;
1.46 schwarze 2235: goto out;
1.80 schwarze 2236: }
1.2 schwarze 2237:
2238: /*
1.46 schwarze 2239: * Anything else following the conditional causes
2240: * single-line scope. Warn if the scope contains
2241: * nothing but trailing whitespace.
1.2 schwarze 2242: */
2243:
1.110 schwarze 2244: if (buf->buf[pos] == '\0')
1.89 schwarze 2245: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2246: ln, ppos, roff_name[tok]);
1.2 schwarze 2247:
1.46 schwarze 2248: r->last->endspan = 1;
1.1 schwarze 2249:
1.46 schwarze 2250: out:
1.2 schwarze 2251: *offs = pos;
1.149 schwarze 2252: return ROFF_RERUN;
1.1 schwarze 2253: }
2254:
1.2 schwarze 2255: static enum rofferr
1.7 schwarze 2256: roff_ds(ROFF_ARGS)
2257: {
1.85 schwarze 2258: char *string;
2259: const char *name;
2260: size_t namesz;
1.10 schwarze 2261:
1.123 schwarze 2262: /* Ignore groff compatibility mode for now. */
2263:
2264: if (tok == ROFF_ds1)
2265: tok = ROFF_ds;
2266: else if (tok == ROFF_as1)
2267: tok = ROFF_as;
2268:
1.10 schwarze 2269: /*
1.85 schwarze 2270: * The first word is the name of the string.
2271: * If it is empty or terminated by an escape sequence,
2272: * abort the `ds' request without defining anything.
1.10 schwarze 2273: */
1.7 schwarze 2274:
1.110 schwarze 2275: name = string = buf->buf + pos;
2276: if (*name == '\0')
1.149 schwarze 2277: return ROFF_IGN;
1.7 schwarze 2278:
1.85 schwarze 2279: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2280: if (name[namesz] == '\\')
1.149 schwarze 2281: return ROFF_IGN;
1.85 schwarze 2282:
2283: /* Read past the initial double-quote, if any. */
1.110 schwarze 2284: if (*string == '"')
1.7 schwarze 2285: string++;
2286:
1.10 schwarze 2287: /* The rest is the value. */
1.85 schwarze 2288: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2289: ROFF_as == tok);
1.183 schwarze 2290: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2291: return ROFF_IGN;
1.7 schwarze 2292: }
2293:
1.77 schwarze 2294: /*
2295: * Parse a single operator, one or two characters long.
2296: * If the operator is recognized, return success and advance the
2297: * parse point, else return failure and let the parse point unchanged.
2298: */
2299: static int
2300: roff_getop(const char *v, int *pos, char *res)
2301: {
2302:
2303: *res = v[*pos];
2304:
2305: switch (*res) {
1.80 schwarze 2306: case '+':
2307: case '-':
2308: case '*':
2309: case '/':
2310: case '%':
2311: case '&':
2312: case ':':
1.77 schwarze 2313: break;
2314: case '<':
2315: switch (v[*pos + 1]) {
1.80 schwarze 2316: case '=':
1.77 schwarze 2317: *res = 'l';
2318: (*pos)++;
2319: break;
1.80 schwarze 2320: case '>':
1.77 schwarze 2321: *res = '!';
2322: (*pos)++;
2323: break;
1.80 schwarze 2324: case '?':
1.77 schwarze 2325: *res = 'i';
2326: (*pos)++;
2327: break;
2328: default:
2329: break;
2330: }
2331: break;
2332: case '>':
2333: switch (v[*pos + 1]) {
1.80 schwarze 2334: case '=':
1.77 schwarze 2335: *res = 'g';
2336: (*pos)++;
2337: break;
1.80 schwarze 2338: case '?':
1.77 schwarze 2339: *res = 'a';
2340: (*pos)++;
2341: break;
2342: default:
2343: break;
2344: }
2345: break;
2346: case '=':
2347: if ('=' == v[*pos + 1])
2348: (*pos)++;
2349: break;
2350: default:
1.149 schwarze 2351: return 0;
1.77 schwarze 2352: }
2353: (*pos)++;
2354:
1.149 schwarze 2355: return *res;
1.77 schwarze 2356: }
2357:
2358: /*
2359: * Evaluate either a parenthesized numeric expression
2360: * or a single signed integer number.
2361: */
2362: static int
1.106 schwarze 2363: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2364: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2365: {
2366:
2367: if ('(' != v[*pos])
1.149 schwarze 2368: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2369:
2370: (*pos)++;
1.133 schwarze 2371: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2372: return 0;
1.77 schwarze 2373:
1.79 schwarze 2374: /*
2375: * Omission of the closing parenthesis
2376: * is an error in validation mode,
2377: * but ignored in evaluation mode.
2378: */
2379:
1.77 schwarze 2380: if (')' == v[*pos])
2381: (*pos)++;
1.79 schwarze 2382: else if (NULL == res)
1.149 schwarze 2383: return 0;
1.77 schwarze 2384:
1.149 schwarze 2385: return 1;
1.77 schwarze 2386: }
2387:
2388: /*
2389: * Evaluate a complete numeric expression.
2390: * Proceed left to right, there is no concept of precedence.
2391: */
2392: static int
1.106 schwarze 2393: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2394: int *pos, int *res, int flags)
1.77 schwarze 2395: {
2396: int mypos, operand2;
2397: char operator;
2398:
2399: if (NULL == pos) {
2400: mypos = 0;
2401: pos = &mypos;
2402: }
2403:
1.133 schwarze 2404: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2405: while (isspace((unsigned char)v[*pos]))
2406: (*pos)++;
2407:
1.133 schwarze 2408: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2409: return 0;
1.77 schwarze 2410:
2411: while (1) {
1.133 schwarze 2412: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2413: while (isspace((unsigned char)v[*pos]))
2414: (*pos)++;
2415:
2416: if ( ! roff_getop(v, pos, &operator))
2417: break;
2418:
1.133 schwarze 2419: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2420: while (isspace((unsigned char)v[*pos]))
2421: (*pos)++;
2422:
1.133 schwarze 2423: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2424: return 0;
1.77 schwarze 2425:
1.133 schwarze 2426: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2427: while (isspace((unsigned char)v[*pos]))
2428: (*pos)++;
1.79 schwarze 2429:
2430: if (NULL == res)
2431: continue;
1.77 schwarze 2432:
2433: switch (operator) {
1.80 schwarze 2434: case '+':
1.77 schwarze 2435: *res += operand2;
2436: break;
1.80 schwarze 2437: case '-':
1.77 schwarze 2438: *res -= operand2;
2439: break;
1.80 schwarze 2440: case '*':
1.77 schwarze 2441: *res *= operand2;
2442: break;
1.80 schwarze 2443: case '/':
1.116 schwarze 2444: if (operand2 == 0) {
1.106 schwarze 2445: mandoc_msg(MANDOCERR_DIVZERO,
2446: r->parse, ln, *pos, v);
2447: *res = 0;
2448: break;
2449: }
1.77 schwarze 2450: *res /= operand2;
2451: break;
1.80 schwarze 2452: case '%':
1.116 schwarze 2453: if (operand2 == 0) {
2454: mandoc_msg(MANDOCERR_DIVZERO,
2455: r->parse, ln, *pos, v);
2456: *res = 0;
2457: break;
2458: }
1.77 schwarze 2459: *res %= operand2;
2460: break;
1.80 schwarze 2461: case '<':
1.77 schwarze 2462: *res = *res < operand2;
2463: break;
1.80 schwarze 2464: case '>':
1.77 schwarze 2465: *res = *res > operand2;
2466: break;
1.80 schwarze 2467: case 'l':
1.77 schwarze 2468: *res = *res <= operand2;
2469: break;
1.80 schwarze 2470: case 'g':
1.77 schwarze 2471: *res = *res >= operand2;
2472: break;
1.80 schwarze 2473: case '=':
1.77 schwarze 2474: *res = *res == operand2;
2475: break;
1.80 schwarze 2476: case '!':
1.77 schwarze 2477: *res = *res != operand2;
2478: break;
1.80 schwarze 2479: case '&':
1.77 schwarze 2480: *res = *res && operand2;
2481: break;
1.80 schwarze 2482: case ':':
1.77 schwarze 2483: *res = *res || operand2;
2484: break;
1.80 schwarze 2485: case 'i':
1.77 schwarze 2486: if (operand2 < *res)
2487: *res = operand2;
2488: break;
1.80 schwarze 2489: case 'a':
1.77 schwarze 2490: if (operand2 > *res)
2491: *res = operand2;
2492: break;
2493: default:
2494: abort();
2495: }
2496: }
1.149 schwarze 2497: return 1;
1.77 schwarze 2498: }
2499:
1.138 schwarze 2500: /* --- register management ------------------------------------------------ */
2501:
1.52 schwarze 2502: void
1.60 schwarze 2503: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2504: {
1.52 schwarze 2505: struct roffreg *reg;
2506:
2507: /* Search for an existing register with the same name. */
2508: reg = r->regtab;
2509:
2510: while (reg && strcmp(name, reg->key.p))
2511: reg = reg->next;
1.41 schwarze 2512:
1.52 schwarze 2513: if (NULL == reg) {
2514: /* Create a new register. */
2515: reg = mandoc_malloc(sizeof(struct roffreg));
2516: reg->key.p = mandoc_strdup(name);
2517: reg->key.sz = strlen(name);
1.60 schwarze 2518: reg->val = 0;
1.52 schwarze 2519: reg->next = r->regtab;
2520: r->regtab = reg;
2521: }
2522:
1.60 schwarze 2523: if ('+' == sign)
2524: reg->val += val;
2525: else if ('-' == sign)
2526: reg->val -= val;
2527: else
2528: reg->val = val;
1.41 schwarze 2529: }
2530:
1.65 schwarze 2531: /*
2532: * Handle some predefined read-only number registers.
2533: * For now, return -1 if the requested register is not predefined;
2534: * in case a predefined read-only register having the value -1
2535: * were to turn up, another special value would have to be chosen.
2536: */
2537: static int
1.145 schwarze 2538: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2539: {
2540:
2541: switch (*name) {
1.145 schwarze 2542: case '$': /* Number of arguments of the last macro evaluated. */
1.149 schwarze 2543: return r->argc;
1.80 schwarze 2544: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2545: return 0;
1.80 schwarze 2546: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2547: return 1;
1.80 schwarze 2548: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2549: return 24;
1.80 schwarze 2550: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2551: return 0;
1.80 schwarze 2552: case 'T': /* Some output device is always defined. */
1.149 schwarze 2553: return 1;
1.80 schwarze 2554: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2555: return 40;
1.65 schwarze 2556: default:
1.149 schwarze 2557: return -1;
1.65 schwarze 2558: }
2559: }
2560:
1.53 schwarze 2561: int
1.52 schwarze 2562: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2563: {
1.52 schwarze 2564: struct roffreg *reg;
1.65 schwarze 2565: int val;
2566:
2567: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.145 schwarze 2568: val = roff_getregro(r, name + 1);
1.65 schwarze 2569: if (-1 != val)
1.149 schwarze 2570: return val;
1.65 schwarze 2571: }
1.52 schwarze 2572:
2573: for (reg = r->regtab; reg; reg = reg->next)
2574: if (0 == strcmp(name, reg->key.p))
1.149 schwarze 2575: return reg->val;
1.53 schwarze 2576:
1.149 schwarze 2577: return 0;
1.53 schwarze 2578: }
2579:
2580: static int
2581: roff_getregn(const struct roff *r, const char *name, size_t len)
2582: {
2583: struct roffreg *reg;
1.65 schwarze 2584: int val;
2585:
2586: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2587: val = roff_getregro(r, name + 1);
1.65 schwarze 2588: if (-1 != val)
1.149 schwarze 2589: return val;
1.65 schwarze 2590: }
1.53 schwarze 2591:
2592: for (reg = r->regtab; reg; reg = reg->next)
2593: if (len == reg->key.sz &&
2594: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2595: return reg->val;
1.143 schwarze 2596:
1.149 schwarze 2597: return 0;
1.143 schwarze 2598: }
2599:
2600: static int
2601: roff_hasregn(const struct roff *r, const char *name, size_t len)
2602: {
2603: struct roffreg *reg;
2604: int val;
2605:
2606: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2607: val = roff_getregro(r, name + 1);
1.143 schwarze 2608: if (-1 != val)
1.149 schwarze 2609: return 1;
1.143 schwarze 2610: }
2611:
2612: for (reg = r->regtab; reg; reg = reg->next)
2613: if (len == reg->key.sz &&
2614: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2615: return 1;
1.41 schwarze 2616:
1.149 schwarze 2617: return 0;
1.41 schwarze 2618: }
2619:
1.52 schwarze 2620: static void
2621: roff_freereg(struct roffreg *reg)
1.41 schwarze 2622: {
1.52 schwarze 2623: struct roffreg *old_reg;
1.41 schwarze 2624:
1.52 schwarze 2625: while (NULL != reg) {
2626: free(reg->key.p);
2627: old_reg = reg;
2628: reg = reg->next;
2629: free(old_reg);
2630: }
1.41 schwarze 2631: }
1.7 schwarze 2632:
2633: static enum rofferr
1.6 schwarze 2634: roff_nr(ROFF_ARGS)
1.1 schwarze 2635: {
1.85 schwarze 2636: char *key, *val;
2637: size_t keysz;
1.37 schwarze 2638: int iv;
1.60 schwarze 2639: char sign;
1.6 schwarze 2640:
1.110 schwarze 2641: key = val = buf->buf + pos;
2642: if (*key == '\0')
1.149 schwarze 2643: return ROFF_IGN;
1.85 schwarze 2644:
2645: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2646: if (key[keysz] == '\\')
1.149 schwarze 2647: return ROFF_IGN;
1.85 schwarze 2648: key[keysz] = '\0';
1.6 schwarze 2649:
1.60 schwarze 2650: sign = *val;
1.110 schwarze 2651: if (sign == '+' || sign == '-')
1.60 schwarze 2652: val++;
2653:
1.133 schwarze 2654: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2655: roff_setreg(r, key, iv, sign);
1.1 schwarze 2656:
1.149 schwarze 2657: return ROFF_IGN;
1.76 schwarze 2658: }
2659:
2660: static enum rofferr
2661: roff_rr(ROFF_ARGS)
2662: {
2663: struct roffreg *reg, **prev;
1.85 schwarze 2664: char *name, *cp;
2665: size_t namesz;
1.76 schwarze 2666:
1.110 schwarze 2667: name = cp = buf->buf + pos;
2668: if (*name == '\0')
1.149 schwarze 2669: return ROFF_IGN;
1.85 schwarze 2670: namesz = roff_getname(r, &cp, ln, pos);
2671: name[namesz] = '\0';
1.76 schwarze 2672:
2673: prev = &r->regtab;
2674: while (1) {
2675: reg = *prev;
1.110 schwarze 2676: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2677: break;
2678: prev = ®->next;
2679: }
1.110 schwarze 2680: if (reg != NULL) {
1.76 schwarze 2681: *prev = reg->next;
2682: free(reg->key.p);
2683: free(reg);
2684: }
1.149 schwarze 2685: return ROFF_IGN;
1.29 schwarze 2686: }
2687:
1.138 schwarze 2688: /* --- handler functions for roff requests -------------------------------- */
2689:
1.29 schwarze 2690: static enum rofferr
2691: roff_rm(ROFF_ARGS)
2692: {
2693: const char *name;
2694: char *cp;
1.85 schwarze 2695: size_t namesz;
1.29 schwarze 2696:
1.110 schwarze 2697: cp = buf->buf + pos;
2698: while (*cp != '\0') {
1.85 schwarze 2699: name = cp;
1.110 schwarze 2700: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2701: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 2702: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 2703: if (name[namesz] == '\\')
1.85 schwarze 2704: break;
1.29 schwarze 2705: }
1.149 schwarze 2706: return ROFF_IGN;
1.51 schwarze 2707: }
2708:
2709: static enum rofferr
2710: roff_it(ROFF_ARGS)
2711: {
2712: int iv;
2713:
2714: /* Parse the number of lines. */
1.133 schwarze 2715:
2716: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2717: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2718: ln, ppos, buf->buf + 1);
1.149 schwarze 2719: return ROFF_IGN;
1.51 schwarze 2720: }
2721:
1.134 schwarze 2722: while (isspace((unsigned char)buf->buf[pos]))
2723: pos++;
2724:
2725: /*
2726: * Arm the input line trap.
2727: * Special-casing "an-trap" is an ugly workaround to cope
2728: * with DocBook stupidly fiddling with man(7) internals.
2729: */
1.133 schwarze 2730:
1.51 schwarze 2731: roffit_lines = iv;
1.134 schwarze 2732: roffit_macro = mandoc_strdup(iv != 1 ||
2733: strcmp(buf->buf + pos, "an-trap") ?
2734: buf->buf + pos : "br");
1.149 schwarze 2735: return ROFF_IGN;
1.47 schwarze 2736: }
2737:
2738: static enum rofferr
2739: roff_Dd(ROFF_ARGS)
2740: {
1.187 schwarze 2741: int mask;
2742: enum roff_tok t, te;
1.99 schwarze 2743:
1.187 schwarze 2744: switch (tok) {
2745: case ROFF_Dd:
2746: tok = MDOC_Dd;
2747: te = MDOC_MAX;
2748: if (r->format == 0)
2749: r->format = MPARSE_MDOC;
2750: mask = MPARSE_MDOC | MPARSE_QUICK;
2751: break;
2752: case ROFF_TH:
2753: tok = MAN_TH;
2754: te = MAN_MAX;
2755: if (r->format == 0)
2756: r->format = MPARSE_MAN;
2757: mask = MPARSE_QUICK;
2758: break;
2759: default:
2760: abort();
2761: }
2762: if ((r->options & mask) == 0)
2763: for (t = tok; t < te; t++)
2764: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 2765: return ROFF_CONT;
1.14 schwarze 2766: }
2767:
2768: static enum rofferr
1.27 schwarze 2769: roff_TE(ROFF_ARGS)
2770: {
2771:
2772: if (NULL == r->tbl)
1.94 schwarze 2773: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2774: ln, ppos, "TE");
1.130 schwarze 2775: else if ( ! tbl_end(&r->tbl)) {
2776: free(buf->buf);
2777: buf->buf = mandoc_strdup(".sp");
2778: buf->sz = 4;
1.149 schwarze 2779: return ROFF_REPARSE;
1.130 schwarze 2780: }
1.149 schwarze 2781: return ROFF_IGN;
1.27 schwarze 2782: }
2783:
2784: static enum rofferr
2785: roff_T_(ROFF_ARGS)
2786: {
2787:
2788: if (NULL == r->tbl)
1.94 schwarze 2789: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2790: ln, ppos, "T&");
1.27 schwarze 2791: else
1.168 schwarze 2792: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 2793:
1.149 schwarze 2794: return ROFF_IGN;
1.27 schwarze 2795: }
2796:
1.102 schwarze 2797: /*
2798: * Handle in-line equation delimiters.
2799: */
2800: static enum rofferr
1.110 schwarze 2801: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2802: {
1.105 schwarze 2803: char *cp1, *cp2;
2804: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2805:
1.102 schwarze 2806: /*
2807: * Outside equations, look for an opening delimiter.
2808: * If we are inside an equation, we already know it is
2809: * in-line, or this function wouldn't have been called;
2810: * so look for a closing delimiter.
2811: */
2812:
1.110 schwarze 2813: cp1 = buf->buf + pos;
1.102 schwarze 2814: cp2 = strchr(cp1, r->eqn == NULL ?
2815: r->last_eqn->odelim : r->last_eqn->cdelim);
2816: if (cp2 == NULL)
1.149 schwarze 2817: return ROFF_CONT;
1.102 schwarze 2818:
1.105 schwarze 2819: *cp2++ = '\0';
2820: bef_pr = bef_nl = aft_nl = aft_pr = "";
2821:
2822: /* Handle preceding text, protecting whitespace. */
2823:
1.110 schwarze 2824: if (*buf->buf != '\0') {
1.105 schwarze 2825: if (r->eqn == NULL)
2826: bef_pr = "\\&";
2827: bef_nl = "\n";
2828: }
2829:
2830: /*
2831: * Prepare replacing the delimiter with an equation macro
2832: * and drop leading white space from the equation.
2833: */
1.102 schwarze 2834:
1.105 schwarze 2835: if (r->eqn == NULL) {
2836: while (*cp2 == ' ')
2837: cp2++;
2838: mac = ".EQ";
2839: } else
2840: mac = ".EN";
2841:
2842: /* Handle following text, protecting whitespace. */
2843:
2844: if (*cp2 != '\0') {
2845: aft_nl = "\n";
2846: if (r->eqn != NULL)
2847: aft_pr = "\\&";
2848: }
2849:
2850: /* Do the actual replacement. */
2851:
1.110 schwarze 2852: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2853: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2854: free(buf->buf);
2855: buf->buf = cp1;
1.102 schwarze 2856:
2857: /* Toggle the in-line state of the eqn subsystem. */
2858:
2859: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2860: return ROFF_REPARSE;
1.41 schwarze 2861: }
2862:
1.107 schwarze 2863: static enum rofferr
2864: roff_EQ(ROFF_ARGS)
1.32 schwarze 2865: {
1.191 schwarze 2866: struct roff_node *n;
2867:
2868: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
2869: if (ln > r->man->last->line)
2870: n->flags |= NODE_LINE;
2871: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
2872: n->eqn->expectargs = UINT_MAX;
2873: roff_node_append(r->man, n);
2874: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 2875:
1.110 schwarze 2876: assert(r->eqn == NULL);
1.191 schwarze 2877: if (r->last_eqn == NULL)
2878: r->last_eqn = eqn_alloc(r->parse);
2879: else
2880: eqn_reset(r->last_eqn);
2881: r->eqn = r->last_eqn;
2882: r->eqn->node = n;
1.41 schwarze 2883:
1.110 schwarze 2884: if (buf->buf[pos] != '\0')
1.107 schwarze 2885: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2886: ".EQ %s", buf->buf + pos);
1.41 schwarze 2887:
1.149 schwarze 2888: return ROFF_IGN;
1.32 schwarze 2889: }
2890:
2891: static enum rofferr
2892: roff_EN(ROFF_ARGS)
2893: {
1.191 schwarze 2894: if (r->eqn != NULL) {
2895: eqn_parse(r->eqn);
2896: r->eqn = NULL;
2897: } else
2898: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
2899: if (buf->buf[pos] != '\0')
2900: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2901: "EN %s", buf->buf + pos);
1.149 schwarze 2902: return ROFF_IGN;
1.32 schwarze 2903: }
2904:
2905: static enum rofferr
1.27 schwarze 2906: roff_TS(ROFF_ARGS)
2907: {
1.49 schwarze 2908: struct tbl_node *tbl;
1.27 schwarze 2909:
2910: if (r->tbl) {
1.94 schwarze 2911: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2912: ln, ppos, "TS breaks TS");
1.41 schwarze 2913: tbl_end(&r->tbl);
1.27 schwarze 2914: }
2915:
1.49 schwarze 2916: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2917:
2918: if (r->last_tbl)
1.49 schwarze 2919: r->last_tbl->next = tbl;
1.27 schwarze 2920: else
1.49 schwarze 2921: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2922:
1.49 schwarze 2923: r->tbl = r->last_tbl = tbl;
1.169 schwarze 2924: return ROFF_IGN;
2925: }
2926:
2927: static enum rofferr
2928: roff_onearg(ROFF_ARGS)
2929: {
2930: struct roff_node *n;
2931: char *cp;
1.177 schwarze 2932: int npos;
1.169 schwarze 2933:
1.174 schwarze 2934: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 ! schwarze 2935: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
! 2936: tok == ROFF_ti))
1.174 schwarze 2937: man_breakscope(r->man, tok);
2938:
1.181 schwarze 2939: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 2940: r->man->last = roffce_node;
2941: r->man->next = ROFF_NEXT_SIBLING;
2942: }
2943:
1.169 schwarze 2944: roff_elem_alloc(r->man, ln, ppos, tok);
2945: n = r->man->last;
2946:
2947: cp = buf->buf + pos;
2948: if (*cp != '\0') {
2949: while (*cp != '\0' && *cp != ' ')
2950: cp++;
2951: while (*cp == ' ')
2952: *cp++ = '\0';
2953: if (*cp != '\0')
2954: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2955: r->parse, ln, cp - buf->buf,
2956: "%s ... %s", roff_name[tok], cp);
2957: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 2958: }
2959:
1.181 schwarze 2960: if (tok == ROFF_ce || tok == ROFF_rj) {
2961: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 2962: roff_word_alloc(r->man, ln, pos, "1");
2963: r->man->last->flags |= NODE_NOSRC;
2964: }
2965: npos = 0;
2966: if (roff_evalnum(r, ln, r->man->last->string, &npos,
2967: &roffce_lines, 0) == 0) {
2968: mandoc_vmsg(MANDOCERR_CE_NONUM,
2969: r->parse, ln, pos, "ce %s", buf->buf + pos);
2970: roffce_lines = 1;
2971: }
2972: if (roffce_lines < 1) {
2973: r->man->last = r->man->last->parent;
2974: roffce_node = NULL;
2975: roffce_lines = 0;
2976: } else
2977: roffce_node = r->man->last->parent;
2978: } else {
2979: n->flags |= NODE_VALID | NODE_ENDED;
2980: r->man->last = n;
2981: }
2982: n->flags |= NODE_LINE;
1.172 schwarze 2983: r->man->next = ROFF_NEXT_SIBLING;
2984: return ROFF_IGN;
2985: }
2986:
2987: static enum rofferr
2988: roff_manyarg(ROFF_ARGS)
2989: {
2990: struct roff_node *n;
2991: char *sp, *ep;
2992:
2993: roff_elem_alloc(r->man, ln, ppos, tok);
2994: n = r->man->last;
2995:
2996: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
2997: while (*ep != '\0' && *ep != ' ')
2998: ep++;
2999: while (*ep == ' ')
3000: *ep++ = '\0';
3001: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3002: }
3003:
3004: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3005: r->man->last = n;
3006: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3007: return ROFF_IGN;
1.123 schwarze 3008: }
3009:
3010: static enum rofferr
1.183 schwarze 3011: roff_als(ROFF_ARGS)
3012: {
3013: char *oldn, *newn, *end, *value;
3014: size_t oldsz, newsz, valsz;
3015:
3016: newn = oldn = buf->buf + pos;
3017: if (*newn == '\0')
3018: return ROFF_IGN;
3019:
3020: newsz = roff_getname(r, &oldn, ln, pos);
3021: if (newn[newsz] == '\\' || *oldn == '\0')
3022: return ROFF_IGN;
3023:
3024: end = oldn;
3025: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3026: if (oldsz == 0)
3027: return ROFF_IGN;
3028:
1.187 schwarze 3029: valsz = mandoc_asprintf(&value, ".%.*s \\$*\\\"\n",
3030: (int)oldsz, oldn);
1.183 schwarze 3031: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3032: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3033: free(value);
3034: return ROFF_IGN;
3035: }
3036:
3037: static enum rofferr
1.168 schwarze 3038: roff_br(ROFF_ARGS)
1.123 schwarze 3039: {
1.174 schwarze 3040: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3041: man_breakscope(r->man, ROFF_br);
1.168 schwarze 3042: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3043: if (buf->buf[pos] != '\0')
3044: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3045: "%s %s", roff_name[tok], buf->buf + pos);
3046: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3047: r->man->next = ROFF_NEXT_SIBLING;
3048: return ROFF_IGN;
1.27 schwarze 3049: }
3050:
3051: static enum rofferr
1.48 schwarze 3052: roff_cc(ROFF_ARGS)
3053: {
3054: const char *p;
3055:
1.110 schwarze 3056: p = buf->buf + pos;
1.48 schwarze 3057:
1.110 schwarze 3058: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3059: r->control = '\0';
1.48 schwarze 3060:
1.110 schwarze 3061: if (*p != '\0')
1.132 schwarze 3062: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3063: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3064:
1.149 schwarze 3065: return ROFF_IGN;
1.48 schwarze 3066: }
3067:
3068: static enum rofferr
1.175 schwarze 3069: roff_ec(ROFF_ARGS)
3070: {
3071: const char *p;
3072:
3073: p = buf->buf + pos;
3074: if (*p == '\0')
3075: r->escape = '\\';
3076: else {
3077: r->escape = *p;
3078: if (*++p != '\0')
3079: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3080: ln, p - buf->buf, "ec ... %s", p);
3081: }
3082: return ROFF_IGN;
3083: }
3084:
3085: static enum rofferr
3086: roff_eo(ROFF_ARGS)
3087: {
3088: r->escape = '\0';
3089: if (buf->buf[pos] != '\0')
3090: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3091: ln, pos, "eo %s", buf->buf + pos);
3092: return ROFF_IGN;
3093: }
3094:
3095: static enum rofferr
1.42 schwarze 3096: roff_tr(ROFF_ARGS)
3097: {
3098: const char *p, *first, *second;
3099: size_t fsz, ssz;
3100: enum mandoc_esc esc;
3101:
1.110 schwarze 3102: p = buf->buf + pos;
1.42 schwarze 3103:
1.110 schwarze 3104: if (*p == '\0') {
1.132 schwarze 3105: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 3106: return ROFF_IGN;
1.42 schwarze 3107: }
3108:
1.110 schwarze 3109: while (*p != '\0') {
1.42 schwarze 3110: fsz = ssz = 1;
3111:
3112: first = p++;
1.110 schwarze 3113: if (*first == '\\') {
1.42 schwarze 3114: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3115: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3116: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3117: ln, (int)(p - buf->buf), first);
1.149 schwarze 3118: return ROFF_IGN;
1.42 schwarze 3119: }
3120: fsz = (size_t)(p - first);
3121: }
3122:
3123: second = p++;
1.110 schwarze 3124: if (*second == '\\') {
1.42 schwarze 3125: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3126: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3127: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3128: ln, (int)(p - buf->buf), second);
1.149 schwarze 3129: return ROFF_IGN;
1.42 schwarze 3130: }
3131: ssz = (size_t)(p - second);
1.110 schwarze 3132: } else if (*second == '\0') {
1.132 schwarze 3133: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3134: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3135: second = " ";
3136: p--;
3137: }
3138:
3139: if (fsz > 1) {
1.80 schwarze 3140: roff_setstrn(&r->xmbtab, first, fsz,
3141: second, ssz, 0);
1.42 schwarze 3142: continue;
3143: }
3144:
1.110 schwarze 3145: if (r->xtab == NULL)
1.80 schwarze 3146: r->xtab = mandoc_calloc(128,
3147: sizeof(struct roffstr));
1.42 schwarze 3148:
3149: free(r->xtab[(int)*first].p);
3150: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3151: r->xtab[(int)*first].sz = ssz;
3152: }
3153:
1.149 schwarze 3154: return ROFF_IGN;
1.42 schwarze 3155: }
3156:
3157: static enum rofferr
1.178 schwarze 3158: roff_rn(ROFF_ARGS)
3159: {
3160: const char *value;
3161: char *oldn, *newn, *end;
3162: size_t oldsz, newsz;
1.187 schwarze 3163: int deftype;
1.178 schwarze 3164:
3165: oldn = newn = buf->buf + pos;
3166: if (*oldn == '\0')
3167: return ROFF_IGN;
3168:
3169: oldsz = roff_getname(r, &newn, ln, pos);
3170: if (oldn[oldsz] == '\\' || *newn == '\0')
3171: return ROFF_IGN;
3172:
3173: end = newn;
3174: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3175: if (newsz == 0)
3176: return ROFF_IGN;
3177:
1.187 schwarze 3178: deftype = ROFFDEF_ANY;
3179: value = roff_getstrn(r, oldn, oldsz, &deftype);
3180: switch (deftype) {
3181: case ROFFDEF_USER:
1.178 schwarze 3182: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3183: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3184: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3185: break;
3186: case ROFFDEF_PRE:
3187: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3188: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3189: break;
3190: case ROFFDEF_REN:
1.178 schwarze 3191: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3192: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3193: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3194: break;
3195: case ROFFDEF_STD:
1.178 schwarze 3196: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3197: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3198: break;
3199: default:
3200: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3201: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3202: break;
3203: }
1.178 schwarze 3204: return ROFF_IGN;
3205: }
3206:
3207: static enum rofferr
1.14 schwarze 3208: roff_so(ROFF_ARGS)
3209: {
1.121 schwarze 3210: char *name, *cp;
1.15 schwarze 3211:
1.110 schwarze 3212: name = buf->buf + pos;
1.97 schwarze 3213: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3214:
1.22 schwarze 3215: /*
3216: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3217: * opening anything that's not in our cwd or anything beneath
3218: * it. Thus, explicitly disallow traversing up the file-system
3219: * or using absolute paths.
3220: */
3221:
1.110 schwarze 3222: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3223: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3224: ".so %s", name);
1.121 schwarze 3225: buf->sz = mandoc_asprintf(&cp,
3226: ".sp\nSee the file %s.\n.sp", name) + 1;
3227: free(buf->buf);
3228: buf->buf = cp;
3229: *offs = 0;
1.149 schwarze 3230: return ROFF_REPARSE;
1.14 schwarze 3231: }
3232:
3233: *offs = pos;
1.149 schwarze 3234: return ROFF_SO;
1.7 schwarze 3235: }
3236:
1.138 schwarze 3237: /* --- user defined strings and macros ------------------------------------ */
3238:
1.16 schwarze 3239: static enum rofferr
3240: roff_userdef(ROFF_ARGS)
1.12 schwarze 3241: {
1.183 schwarze 3242: const char *arg[16], *ap;
1.16 schwarze 3243: char *cp, *n1, *n2;
1.164 schwarze 3244: int expand_count, i, ib, ie;
1.135 schwarze 3245: size_t asz, rsz;
1.12 schwarze 3246:
1.16 schwarze 3247: /*
3248: * Collect pointers to macro argument strings
1.61 schwarze 3249: * and NUL-terminate them.
1.16 schwarze 3250: */
1.135 schwarze 3251:
1.145 schwarze 3252: r->argc = 0;
1.110 schwarze 3253: cp = buf->buf + pos;
1.183 schwarze 3254: for (i = 0; i < 16; i++) {
1.145 schwarze 3255: if (*cp == '\0')
3256: arg[i] = "";
3257: else {
3258: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3259: r->argc = i + 1;
3260: }
3261: }
1.16 schwarze 3262:
3263: /*
3264: * Expand macro arguments.
1.12 schwarze 3265: */
1.135 schwarze 3266:
3267: buf->sz = strlen(r->current_string) + 1;
1.164 schwarze 3268: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.135 schwarze 3269: memcpy(n1, r->current_string, buf->sz);
1.164 schwarze 3270: expand_count = 0;
1.135 schwarze 3271: while (*cp != '\0') {
3272:
3273: /* Scan ahead for the next argument invocation. */
3274:
3275: if (*cp++ != '\\')
3276: continue;
3277: if (*cp++ != '$')
3278: continue;
1.146 schwarze 3279: if (*cp == '*') { /* \\$* inserts all arguments */
3280: ib = 0;
3281: ie = r->argc - 1;
3282: } else { /* \\$1 .. \\$9 insert one argument */
3283: ib = ie = *cp - '1';
3284: if (ib < 0 || ib > 8)
3285: continue;
3286: }
1.135 schwarze 3287: cp -= 2;
1.164 schwarze 3288:
3289: /*
3290: * Prevent infinite recursion.
3291: */
3292:
3293: if (cp >= n2)
3294: expand_count = 1;
3295: else if (++expand_count > EXPAND_LIMIT) {
3296: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3297: ln, (int)(cp - n1), NULL);
1.165 schwarze 3298: free(buf->buf);
3299: buf->buf = n1;
1.164 schwarze 3300: return ROFF_IGN;
3301: }
1.135 schwarze 3302:
3303: /*
3304: * Determine the size of the expanded argument,
3305: * taking escaping of quotes into account.
3306: */
3307:
1.146 schwarze 3308: asz = ie > ib ? ie - ib : 0; /* for blanks */
3309: for (i = ib; i <= ie; i++) {
3310: for (ap = arg[i]; *ap != '\0'; ap++) {
3311: asz++;
3312: if (*ap == '"')
3313: asz += 3;
3314: }
1.135 schwarze 3315: }
3316: if (asz != 3) {
3317:
3318: /*
3319: * Determine the size of the rest of the
3320: * unexpanded macro, including the NUL.
3321: */
3322:
3323: rsz = buf->sz - (cp - n1) - 3;
3324:
3325: /*
3326: * When shrinking, move before
3327: * releasing the storage.
3328: */
3329:
3330: if (asz < 3)
3331: memmove(cp + asz, cp + 3, rsz);
3332:
3333: /*
3334: * Resize the storage for the macro
3335: * and readjust the parse pointer.
3336: */
3337:
3338: buf->sz += asz - 3;
3339: n2 = mandoc_realloc(n1, buf->sz);
3340: cp = n2 + (cp - n1);
3341: n1 = n2;
3342:
3343: /*
3344: * When growing, make room
3345: * for the expanded argument.
3346: */
3347:
3348: if (asz > 3)
3349: memmove(cp + asz, cp + 3, rsz);
3350: }
3351:
3352: /* Copy the expanded argument, escaping quotes. */
3353:
3354: n2 = cp;
1.146 schwarze 3355: for (i = ib; i <= ie; i++) {
3356: for (ap = arg[i]; *ap != '\0'; ap++) {
3357: if (*ap == '"') {
3358: memcpy(n2, "\\(dq", 4);
3359: n2 += 4;
3360: } else
3361: *n2++ = *ap;
3362: }
3363: if (i < ie)
3364: *n2++ = ' ';
1.16 schwarze 3365: }
1.12 schwarze 3366: }
3367:
1.16 schwarze 3368: /*
3369: * Replace the macro invocation
3370: * by the expanded macro.
3371: */
1.135 schwarze 3372:
1.110 schwarze 3373: free(buf->buf);
3374: buf->buf = n1;
1.120 schwarze 3375: *offs = 0;
1.16 schwarze 3376:
1.149 schwarze 3377: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3378: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3379: }
1.28 schwarze 3380:
1.178 schwarze 3381: /*
3382: * Calling a high-level macro that was renamed with .rn.
3383: * r->current_string has already been set up by roff_parse().
3384: */
3385: static enum rofferr
3386: roff_renamed(ROFF_ARGS)
3387: {
3388: char *nbuf;
3389:
1.187 schwarze 3390: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3391: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3392: free(buf->buf);
3393: buf->buf = nbuf;
3394: return ROFF_CONT;
3395: }
3396:
1.85 schwarze 3397: static size_t
1.28 schwarze 3398: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3399: {
3400: char *name, *cp;
1.85 schwarze 3401: size_t namesz;
1.28 schwarze 3402:
3403: name = *cpp;
3404: if ('\0' == *name)
1.149 schwarze 3405: return 0;
1.28 schwarze 3406:
1.85 schwarze 3407: /* Read until end of name and terminate it with NUL. */
3408: for (cp = name; 1; cp++) {
3409: if ('\0' == *cp || ' ' == *cp) {
3410: namesz = cp - name;
3411: break;
3412: }
1.28 schwarze 3413: if ('\\' != *cp)
3414: continue;
1.88 schwarze 3415: namesz = cp - name;
3416: if ('{' == cp[1] || '}' == cp[1])
3417: break;
1.28 schwarze 3418: cp++;
3419: if ('\\' == *cp)
3420: continue;
1.97 schwarze 3421: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3422: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3423: mandoc_escape((const char **)&cp, NULL, NULL);
3424: break;
1.28 schwarze 3425: }
3426:
3427: /* Read past spaces. */
3428: while (' ' == *cp)
3429: cp++;
3430:
3431: *cpp = cp;
1.149 schwarze 3432: return namesz;
1.28 schwarze 3433: }
3434:
1.16 schwarze 3435: /*
3436: * Store *string into the user-defined string called *name.
3437: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3438: * append == 0: replace mode
3439: * append == 1: single-line append mode
3440: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3441: */
1.8 schwarze 3442: static void
1.16 schwarze 3443: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3444: int append)
1.7 schwarze 3445: {
1.187 schwarze 3446: size_t namesz;
1.42 schwarze 3447:
1.187 schwarze 3448: namesz = strlen(name);
3449: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3450: string ? strlen(string) : 0, append);
1.187 schwarze 3451: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3452: }
3453:
3454: static void
3455: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3456: const char *string, size_t stringsz, int append)
1.42 schwarze 3457: {
3458: struct roffkv *n;
3459: char *c;
3460: int i;
3461: size_t oldch, newch;
1.7 schwarze 3462:
1.16 schwarze 3463: /* Search for an existing string with the same name. */
1.42 schwarze 3464: n = *r;
3465:
1.84 schwarze 3466: while (n && (namesz != n->key.sz ||
3467: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3468: n = n->next;
1.8 schwarze 3469:
3470: if (NULL == n) {
1.16 schwarze 3471: /* Create a new string table entry. */
1.42 schwarze 3472: n = mandoc_malloc(sizeof(struct roffkv));
3473: n->key.p = mandoc_strndup(name, namesz);
3474: n->key.sz = namesz;
3475: n->val.p = NULL;
3476: n->val.sz = 0;
3477: n->next = *r;
3478: *r = n;
1.66 schwarze 3479: } else if (0 == append) {
1.42 schwarze 3480: free(n->val.p);
3481: n->val.p = NULL;
3482: n->val.sz = 0;
1.16 schwarze 3483: }
3484:
3485: if (NULL == string)
3486: return;
3487:
3488: /*
3489: * One additional byte for the '\n' in multiline mode,
3490: * and one for the terminating '\0'.
3491: */
1.66 schwarze 3492: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3493:
3494: if (NULL == n->val.p) {
3495: n->val.p = mandoc_malloc(newch);
3496: *n->val.p = '\0';
1.16 schwarze 3497: oldch = 0;
3498: } else {
1.42 schwarze 3499: oldch = n->val.sz;
3500: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3501: }
3502:
3503: /* Skip existing content in the destination buffer. */
1.42 schwarze 3504: c = n->val.p + (int)oldch;
1.16 schwarze 3505:
3506: /* Append new content to the destination buffer. */
1.42 schwarze 3507: i = 0;
3508: while (i < (int)stringsz) {
1.16 schwarze 3509: /*
3510: * Rudimentary roff copy mode:
3511: * Handle escaped backslashes.
3512: */
1.42 schwarze 3513: if ('\\' == string[i] && '\\' == string[i + 1])
3514: i++;
3515: *c++ = string[i++];
1.16 schwarze 3516: }
1.8 schwarze 3517:
1.16 schwarze 3518: /* Append terminating bytes. */
1.66 schwarze 3519: if (1 < append)
1.16 schwarze 3520: *c++ = '\n';
1.42 schwarze 3521:
1.16 schwarze 3522: *c = '\0';
1.42 schwarze 3523: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3524: }
3525:
1.8 schwarze 3526: static const char *
1.187 schwarze 3527: roff_getstrn(const struct roff *r, const char *name, size_t len,
3528: int *deftype)
1.7 schwarze 3529: {
1.187 schwarze 3530: const struct roffkv *n;
3531: int i;
3532: enum roff_tok tok;
3533:
3534: if (*deftype & ROFFDEF_USER) {
3535: for (n = r->strtab; n != NULL; n = n->next) {
3536: if (strncmp(name, n->key.p, len) == 0 &&
3537: n->key.p[len] == '\0' &&
3538: n->val.p != NULL) {
3539: *deftype = ROFFDEF_USER;
3540: return n->val.p;
3541: }
3542: }
3543: }
3544: if (*deftype & ROFFDEF_PRE) {
3545: for (i = 0; i < PREDEFS_MAX; i++) {
3546: if (strncmp(name, predefs[i].name, len) == 0 &&
3547: predefs[i].name[len] == '\0') {
3548: *deftype = ROFFDEF_PRE;
3549: return predefs[i].str;
3550: }
3551: }
3552: }
3553: if (*deftype & ROFFDEF_REN) {
3554: for (n = r->rentab; n != NULL; n = n->next) {
3555: if (strncmp(name, n->key.p, len) == 0 &&
3556: n->key.p[len] == '\0' &&
3557: n->val.p != NULL) {
3558: *deftype = ROFFDEF_REN;
3559: return n->val.p;
3560: }
3561: }
3562: }
3563: if (*deftype & ROFFDEF_STD) {
3564: if (r->man->macroset != MACROSET_MAN) {
3565: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3566: if (strncmp(name, roff_name[tok], len) == 0 &&
3567: roff_name[tok][len] == '\0') {
3568: *deftype = ROFFDEF_STD;
3569: return NULL;
3570: }
3571: }
3572: }
3573: if (r->man->macroset != MACROSET_MDOC) {
3574: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3575: if (strncmp(name, roff_name[tok], len) == 0 &&
3576: roff_name[tok][len] == '\0') {
3577: *deftype = ROFFDEF_STD;
3578: return NULL;
3579: }
3580: }
3581: }
3582: }
3583: *deftype = 0;
1.149 schwarze 3584: return NULL;
1.7 schwarze 3585: }
3586:
1.8 schwarze 3587: static void
1.42 schwarze 3588: roff_freestr(struct roffkv *r)
1.7 schwarze 3589: {
1.42 schwarze 3590: struct roffkv *n, *nn;
1.7 schwarze 3591:
1.42 schwarze 3592: for (n = r; n; n = nn) {
3593: free(n->key.p);
3594: free(n->val.p);
1.7 schwarze 3595: nn = n->next;
3596: free(n);
3597: }
1.27 schwarze 3598: }
1.138 schwarze 3599:
3600: /* --- accessors and utility functions ------------------------------------ */
1.27 schwarze 3601:
3602: const struct tbl_span *
3603: roff_span(const struct roff *r)
3604: {
1.80 schwarze 3605:
1.149 schwarze 3606: return r->tbl ? tbl_span(r->tbl) : NULL;
1.42 schwarze 3607: }
3608:
3609: /*
3610: * Duplicate an input string, making the appropriate character
3611: * conversations (as stipulated by `tr') along the way.
3612: * Returns a heap-allocated string with all the replacements made.
3613: */
3614: char *
3615: roff_strdup(const struct roff *r, const char *p)
3616: {
3617: const struct roffkv *cp;
3618: char *res;
3619: const char *pp;
3620: size_t ssz, sz;
3621: enum mandoc_esc esc;
3622:
3623: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3624: return mandoc_strdup(p);
1.42 schwarze 3625: else if ('\0' == *p)
1.149 schwarze 3626: return mandoc_strdup("");
1.42 schwarze 3627:
3628: /*
3629: * Step through each character looking for term matches
3630: * (remember that a `tr' can be invoked with an escape, which is
3631: * a glyph but the escape is multi-character).
3632: * We only do this if the character hash has been initialised
3633: * and the string is >0 length.
3634: */
3635:
3636: res = NULL;
3637: ssz = 0;
3638:
3639: while ('\0' != *p) {
1.161 schwarze 3640: assert((unsigned int)*p < 128);
3641: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3642: sz = r->xtab[(int)*p].sz;
3643: res = mandoc_realloc(res, ssz + sz + 1);
3644: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3645: ssz += sz;
3646: p++;
3647: continue;
3648: } else if ('\\' != *p) {
3649: res = mandoc_realloc(res, ssz + 2);
3650: res[ssz++] = *p++;
3651: continue;
3652: }
3653:
3654: /* Search for term matches. */
3655: for (cp = r->xmbtab; cp; cp = cp->next)
3656: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3657: break;
3658:
3659: if (NULL != cp) {
3660: /*
3661: * A match has been found.
3662: * Append the match to the array and move
3663: * forward by its keysize.
3664: */
1.80 schwarze 3665: res = mandoc_realloc(res,
3666: ssz + cp->val.sz + 1);
1.42 schwarze 3667: memcpy(res + ssz, cp->val.p, cp->val.sz);
3668: ssz += cp->val.sz;
3669: p += (int)cp->key.sz;
3670: continue;
3671: }
3672:
3673: /*
3674: * Handle escapes carefully: we need to copy
3675: * over just the escape itself, or else we might
3676: * do replacements within the escape itself.
3677: * Make sure to pass along the bogus string.
3678: */
3679: pp = p++;
3680: esc = mandoc_escape(&p, NULL, NULL);
3681: if (ESCAPE_ERROR == esc) {
3682: sz = strlen(pp);
3683: res = mandoc_realloc(res, ssz + sz + 1);
3684: memcpy(res + ssz, pp, sz);
3685: break;
3686: }
1.80 schwarze 3687: /*
3688: * We bail out on bad escapes.
1.42 schwarze 3689: * No need to warn: we already did so when
3690: * roff_res() was called.
3691: */
3692: sz = (int)(p - pp);
3693: res = mandoc_realloc(res, ssz + sz + 1);
3694: memcpy(res + ssz, pp, sz);
3695: ssz += sz;
3696: }
3697:
3698: res[(int)ssz] = '\0';
1.149 schwarze 3699: return res;
1.99 schwarze 3700: }
3701:
3702: int
3703: roff_getformat(const struct roff *r)
3704: {
3705:
1.149 schwarze 3706: return r->format;
1.48 schwarze 3707: }
3708:
3709: /*
1.80 schwarze 3710: * Find out whether a line is a macro line or not.
1.48 schwarze 3711: * If it is, adjust the current position and return one; if it isn't,
3712: * return zero and don't change the current position.
3713: * If the control character has been set with `.cc', then let that grain
3714: * precedence.
3715: * This is slighly contrary to groff, where using the non-breaking
3716: * control character when `cc' has been invoked will cause the
3717: * non-breaking macro contents to be printed verbatim.
3718: */
3719: int
3720: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3721: {
3722: int pos;
3723:
3724: pos = *ppos;
3725:
1.175 schwarze 3726: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 3727: pos++;
1.175 schwarze 3728: else if (r->control != '\0')
1.149 schwarze 3729: return 0;
1.48 schwarze 3730: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3731: pos += 2;
3732: else if ('.' == cp[pos] || '\'' == cp[pos])
3733: pos++;
3734: else
1.149 schwarze 3735: return 0;
1.48 schwarze 3736:
3737: while (' ' == cp[pos] || '\t' == cp[pos])
3738: pos++;
3739:
3740: *ppos = pos;
1.149 schwarze 3741: return 1;
1.1 schwarze 3742: }
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