Annotation of src/usr.bin/mandoc/roff.c, Revision 1.238
1.238 ! schwarze 1: /* $OpenBSD: roff.c,v 1.237 2019/04/21 23:45:50 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.232 schwarze 4: * Copyright (c) 2010-2015, 2017-2019 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:
1.74 schwarze 29: #include "mandoc_aux.h"
1.167 schwarze 30: #include "mandoc_ohash.h"
1.217 schwarze 31: #include "mandoc.h"
1.137 schwarze 32: #include "roff.h"
1.221 schwarze 33: #include "mandoc_parse.h"
1.98 daniel 34: #include "libmandoc.h"
1.138 schwarze 35: #include "roff_int.h"
1.218 schwarze 36: #include "tbl_parse.h"
1.219 schwarze 37: #include "eqn_parse.h"
1.2 schwarze 38:
1.227 schwarze 39: /*
40: * ASCII_ESC is used to signal from roff_getarg() to roff_expand()
41: * that an escape sequence resulted from copy-in processing and
42: * needs to be checked or interpolated. As it is used nowhere
43: * else, it is defined here rather than in a header file.
44: */
45: #define ASCII_ESC 27
46:
1.43 schwarze 47: /* Maximum number of string expansions per line, to break infinite loops. */
48: #define EXPAND_LIMIT 1000
49:
1.187 schwarze 50: /* Types of definitions of macros and strings. */
51: #define ROFFDEF_USER (1 << 1) /* User-defined. */
52: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
53: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
54: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
55: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
56: ROFFDEF_REN | ROFFDEF_STD)
1.197 schwarze 57: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.187 schwarze 58:
1.138 schwarze 59: /* --- data types --------------------------------------------------------- */
60:
1.41 schwarze 61: /*
1.42 schwarze 62: * An incredibly-simple string buffer.
63: */
1.8 schwarze 64: struct roffstr {
1.42 schwarze 65: char *p; /* nil-terminated buffer */
66: size_t sz; /* saved strlen(p) */
67: };
68:
69: /*
70: * A key-value roffstr pair as part of a singly-linked list.
71: */
72: struct roffkv {
73: struct roffstr key;
74: struct roffstr val;
75: struct roffkv *next; /* next in list */
1.8 schwarze 76: };
77:
1.52 schwarze 78: /*
79: * A single number register as part of a singly-linked list.
80: */
81: struct roffreg {
82: struct roffstr key;
1.53 schwarze 83: int val;
1.199 schwarze 84: int step;
1.52 schwarze 85: struct roffreg *next;
86: };
87:
1.167 schwarze 88: /*
89: * Association of request and macro names with token IDs.
90: */
91: struct roffreq {
92: enum roff_tok tok;
93: char name[];
94: };
95:
1.211 schwarze 96: /*
97: * A macro processing context.
98: * More than one is needed when macro calls are nested.
99: */
100: struct mctx {
101: char **argv;
102: int argc;
103: int argsz;
104: };
105:
1.1 schwarze 106: struct roff {
1.168 schwarze 107: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 108: struct roffnode *last; /* leaf of stack */
1.211 schwarze 109: struct mctx *mstack; /* stack of macro contexts */
1.96 schwarze 110: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 111: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 112: struct roffreg *regtab; /* number registers */
1.42 schwarze 113: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 114: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 115: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
116: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 117: const char *current_string; /* value of last called user macro */
1.27 schwarze 118: struct tbl_node *first_tbl; /* first table parsed */
119: struct tbl_node *last_tbl; /* last table parsed */
120: struct tbl_node *tbl; /* current table being parsed */
1.191 schwarze 121: struct eqn_node *last_eqn; /* equation parser */
122: struct eqn_node *eqn; /* active equation parser */
1.102 schwarze 123: int eqn_inline; /* current equation is inline */
1.96 schwarze 124: int options; /* parse options */
1.211 schwarze 125: int mstacksz; /* current size of mstack */
126: int mstackpos; /* position in mstack */
1.96 schwarze 127: int rstacksz; /* current size limit of rstack */
128: int rstackpos; /* position in rstack */
1.99 schwarze 129: int format; /* current file in mdoc or man format */
1.96 schwarze 130: char control; /* control character */
1.175 schwarze 131: char escape; /* escape character */
1.1 schwarze 132: };
133:
1.236 schwarze 134: /*
135: * A macro definition, condition, or ignored block.
136: */
1.1 schwarze 137: struct roffnode {
1.166 schwarze 138: enum roff_tok tok; /* type of node */
1.1 schwarze 139: struct roffnode *parent; /* up one in stack */
140: int line; /* parse line */
141: int col; /* parse col */
1.16 schwarze 142: char *name; /* node name, e.g. macro name */
1.236 schwarze 143: char *end; /* custom end macro of the block */
144: int endspan; /* scope to: 1=eol 2=next line -1=\} */
145: int rule; /* content is: 1=evaluated 0=skipped */
1.1 schwarze 146: };
147:
148: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 149: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 150: struct buf *buf, /* input buffer */ \
1.1 schwarze 151: int ln, /* parse line */ \
1.2 schwarze 152: int ppos, /* original pos in buffer */ \
153: int pos, /* current pos in buffer */ \
154: int *offs /* reset offset of buffer data */
1.1 schwarze 155:
1.212 schwarze 156: typedef int (*roffproc)(ROFF_ARGS);
1.1 schwarze 157:
158: struct roffmac {
1.2 schwarze 159: roffproc proc; /* process new macro */
160: roffproc text; /* process as child text of macro */
161: roffproc sub; /* process as child of macro */
162: int flags;
163: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 164: };
165:
1.37 schwarze 166: struct predef {
167: const char *name; /* predefined input name */
168: const char *str; /* replacement symbol */
169: };
170:
171: #define PREDEF(__name, __str) \
172: { (__name), (__str) },
173:
1.138 schwarze 174: /* --- function prototypes ------------------------------------------------ */
175:
1.212 schwarze 176: static int roffnode_cleanscope(struct roff *);
177: static int roffnode_pop(struct roff *);
1.166 schwarze 178: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 179: const char *, int, int);
1.218 schwarze 180: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.212 schwarze 181: static int roff_als(ROFF_ARGS);
182: static int roff_block(ROFF_ARGS);
183: static int roff_block_text(ROFF_ARGS);
184: static int roff_block_sub(ROFF_ARGS);
1.236 schwarze 185: static int roff_break(ROFF_ARGS);
1.212 schwarze 186: static int roff_cblock(ROFF_ARGS);
187: static int roff_cc(ROFF_ARGS);
188: static int roff_ccond(struct roff *, int, int);
1.213 schwarze 189: static int roff_char(ROFF_ARGS);
1.212 schwarze 190: static int roff_cond(ROFF_ARGS);
191: static int roff_cond_text(ROFF_ARGS);
192: static int roff_cond_sub(ROFF_ARGS);
193: static int roff_ds(ROFF_ARGS);
194: static int roff_ec(ROFF_ARGS);
195: static int roff_eo(ROFF_ARGS);
196: static int roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 197: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 198: static int roff_evalnum(struct roff *, int,
199: const char *, int *, int *, int);
200: static int roff_evalpar(struct roff *, int,
1.133 schwarze 201: const char *, int *, int *, int);
1.71 schwarze 202: static int roff_evalstrcond(const char *, int *);
1.227 schwarze 203: static int roff_expand(struct roff *, struct buf *,
204: int, int, char);
1.42 schwarze 205: static void roff_free1(struct roff *);
1.52 schwarze 206: static void roff_freereg(struct roffreg *);
1.42 schwarze 207: static void roff_freestr(struct roffkv *);
1.85 schwarze 208: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 209: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 210: static int roff_getop(const char *, int *, char *);
1.199 schwarze 211: static int roff_getregn(struct roff *,
212: const char *, size_t, char);
1.145 schwarze 213: static int roff_getregro(const struct roff *,
214: const char *name);
1.197 schwarze 215: static const char *roff_getstrn(struct roff *,
1.187 schwarze 216: const char *, size_t, int *);
1.143 schwarze 217: static int roff_hasregn(const struct roff *,
218: const char *, size_t);
1.212 schwarze 219: static int roff_insec(ROFF_ARGS);
220: static int roff_it(ROFF_ARGS);
221: static int roff_line_ignore(ROFF_ARGS);
1.137 schwarze 222: static void roff_man_alloc1(struct roff_man *);
223: static void roff_man_free1(struct roff_man *);
1.212 schwarze 224: static int roff_manyarg(ROFF_ARGS);
1.230 schwarze 225: static int roff_noarg(ROFF_ARGS);
1.212 schwarze 226: static int roff_nop(ROFF_ARGS);
227: static int roff_nr(ROFF_ARGS);
228: static int roff_onearg(ROFF_ARGS);
1.166 schwarze 229: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 230: int, int);
1.212 schwarze 231: static int roff_parsetext(struct roff *, struct buf *,
1.177 schwarze 232: int, int *);
1.212 schwarze 233: static int roff_renamed(ROFF_ARGS);
234: static int roff_return(ROFF_ARGS);
235: static int roff_rm(ROFF_ARGS);
236: static int roff_rn(ROFF_ARGS);
237: static int roff_rr(ROFF_ARGS);
1.198 schwarze 238: static void roff_setregn(struct roff *, const char *,
1.199 schwarze 239: size_t, int, char, int);
1.8 schwarze 240: static void roff_setstr(struct roff *,
1.16 schwarze 241: const char *, const char *, int);
1.80 schwarze 242: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 243: size_t, const char *, size_t, int);
1.212 schwarze 244: static int roff_shift(ROFF_ARGS);
245: static int roff_so(ROFF_ARGS);
246: static int roff_tr(ROFF_ARGS);
247: static int roff_Dd(ROFF_ARGS);
248: static int roff_TE(ROFF_ARGS);
249: static int roff_TS(ROFF_ARGS);
250: static int roff_EQ(ROFF_ARGS);
251: static int roff_EN(ROFF_ARGS);
252: static int roff_T_(ROFF_ARGS);
253: static int roff_unsupp(ROFF_ARGS);
254: static int roff_userdef(ROFF_ARGS);
1.1 schwarze 255:
1.138 schwarze 256: /* --- constant data ------------------------------------------------------ */
257:
1.133 schwarze 258: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
259: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
260:
1.166 schwarze 261: const char *__roff_name[MAN_MAX + 1] = {
1.230 schwarze 262: "br", "ce", "fi", "ft",
263: "ll", "mc", "nf",
264: "po", "rj", "sp",
1.184 schwarze 265: "ta", "ti", NULL,
1.166 schwarze 266: "ab", "ad", "af", "aln",
267: "als", "am", "am1", "ami",
268: "ami1", "as", "as1", "asciify",
269: "backtrace", "bd", "bleedat", "blm",
270: "box", "boxa", "bp", "BP",
271: "break", "breakchar", "brnl", "brp",
1.177 schwarze 272: "brpnl", "c2", "cc",
1.166 schwarze 273: "cf", "cflags", "ch", "char",
274: "chop", "class", "close", "CL",
275: "color", "composite", "continue", "cp",
276: "cropat", "cs", "cu", "da",
277: "dch", "Dd", "de", "de1",
278: "defcolor", "dei", "dei1", "device",
279: "devicem", "di", "do", "ds",
280: "ds1", "dwh", "dt", "ec",
281: "ecr", "ecs", "el", "em",
282: "EN", "eo", "EP", "EQ",
283: "errprint", "ev", "evc", "ex",
284: "fallback", "fam", "fc", "fchar",
285: "fcolor", "fdeferlig", "feature", "fkern",
286: "fl", "flig", "fp", "fps",
287: "fschar", "fspacewidth", "fspecial", "ftr",
288: "fzoom", "gcolor", "hc", "hcode",
289: "hidechar", "hla", "hlm", "hpf",
290: "hpfa", "hpfcode", "hw", "hy",
291: "hylang", "hylen", "hym", "hypp",
292: "hys", "ie", "if", "ig",
293: "index", "it", "itc", "IX",
294: "kern", "kernafter", "kernbefore", "kernpair",
295: "lc", "lc_ctype", "lds", "length",
296: "letadj", "lf", "lg", "lhang",
297: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 298: "ls", "lsm", "lt",
1.166 schwarze 299: "mediasize", "minss", "mk", "mso",
300: "na", "ne", "nh", "nhychar",
301: "nm", "nn", "nop", "nr",
302: "nrf", "nroff", "ns", "nx",
303: "open", "opena", "os", "output",
304: "padj", "papersize", "pc", "pev",
305: "pi", "PI", "pl", "pm",
1.184 schwarze 306: "pn", "pnr", "ps",
1.166 schwarze 307: "psbb", "pshape", "pso", "ptr",
308: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 309: "return", "rfschar", "rhang",
1.166 schwarze 310: "rm", "rn", "rnn", "rr",
311: "rs", "rt", "schar", "sentchar",
312: "shc", "shift", "sizes", "so",
313: "spacewidth", "special", "spreadwarn", "ss",
314: "sty", "substring", "sv", "sy",
1.172 schwarze 315: "T&", "tc", "TE",
1.173 schwarze 316: "TH", "tkf", "tl",
1.166 schwarze 317: "tm", "tm1", "tmc", "tr",
318: "track", "transchar", "trf", "trimat",
319: "trin", "trnt", "troff", "TS",
320: "uf", "ul", "unformat", "unwatch",
321: "unwatchn", "vpt", "vs", "warn",
322: "warnscale", "watch", "watchlength", "watchn",
323: "wh", "while", "write", "writec",
324: "writem", "xflag", ".", NULL,
1.178 schwarze 325: NULL, "text",
1.166 schwarze 326: "Dd", "Dt", "Os", "Sh",
327: "Ss", "Pp", "D1", "Dl",
328: "Bd", "Ed", "Bl", "El",
329: "It", "Ad", "An", "Ap",
330: "Ar", "Cd", "Cm", "Dv",
331: "Er", "Ev", "Ex", "Fa",
332: "Fd", "Fl", "Fn", "Ft",
333: "Ic", "In", "Li", "Nd",
334: "Nm", "Op", "Ot", "Pa",
335: "Rv", "St", "Va", "Vt",
336: "Xr", "%A", "%B", "%D",
337: "%I", "%J", "%N", "%O",
338: "%P", "%R", "%T", "%V",
339: "Ac", "Ao", "Aq", "At",
340: "Bc", "Bf", "Bo", "Bq",
341: "Bsx", "Bx", "Db", "Dc",
342: "Do", "Dq", "Ec", "Ef",
343: "Em", "Eo", "Fx", "Ms",
344: "No", "Ns", "Nx", "Ox",
345: "Pc", "Pf", "Po", "Pq",
346: "Qc", "Ql", "Qo", "Qq",
347: "Re", "Rs", "Sc", "So",
348: "Sq", "Sm", "Sx", "Sy",
349: "Tn", "Ux", "Xc", "Xo",
350: "Fo", "Fc", "Oo", "Oc",
351: "Bk", "Ek", "Bt", "Hf",
352: "Fr", "Ud", "Lb", "Lp",
353: "Lk", "Mt", "Brq", "Bro",
354: "Brc", "%C", "Es", "En",
1.171 schwarze 355: "Dx", "%Q", "%U", "Ta",
356: NULL,
1.166 schwarze 357: "TH", "SH", "SS", "TP",
1.204 schwarze 358: "TQ",
1.166 schwarze 359: "LP", "PP", "P", "IP",
360: "HP", "SM", "SB", "BI",
361: "IB", "BR", "RB", "R",
362: "B", "I", "IR", "RI",
363: "RE", "RS", "DT", "UC",
1.169 schwarze 364: "PD", "AT", "in",
1.205 schwarze 365: "SY", "YS", "OP",
366: "EX", "EE", "UR",
1.189 bentley 367: "UE", "MT", "ME", NULL
1.166 schwarze 368: };
369: const char *const *roff_name = __roff_name;
370:
371: static struct roffmac roffs[TOKEN_NONE] = {
1.230 schwarze 372: { roff_noarg, NULL, NULL, 0 }, /* br */
1.177 schwarze 373: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.230 schwarze 374: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.169 schwarze 375: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 376: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 377: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.230 schwarze 378: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.184 schwarze 379: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 380: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 381: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 382: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 383: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 384: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 385: { roff_unsupp, NULL, NULL, 0 }, /* ab */
386: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
387: { roff_line_ignore, NULL, NULL, 0 }, /* af */
388: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 389: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 390: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
391: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
392: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
393: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
394: { roff_ds, NULL, NULL, 0 }, /* as */
395: { roff_ds, NULL, NULL, 0 }, /* as1 */
396: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
397: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
398: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
399: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
400: { roff_unsupp, NULL, NULL, 0 }, /* blm */
401: { roff_unsupp, NULL, NULL, 0 }, /* box */
402: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
403: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
404: { roff_unsupp, NULL, NULL, 0 }, /* BP */
1.236 schwarze 405: { roff_break, NULL, NULL, 0 }, /* break */
1.167 schwarze 406: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
407: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.230 schwarze 408: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.167 schwarze 409: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
410: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
411: { roff_cc, NULL, NULL, 0 }, /* cc */
412: { roff_insec, NULL, NULL, 0 }, /* cf */
413: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
414: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.213 schwarze 415: { roff_char, NULL, NULL, 0 }, /* char */
1.167 schwarze 416: { roff_unsupp, NULL, NULL, 0 }, /* chop */
417: { roff_line_ignore, NULL, NULL, 0 }, /* class */
418: { roff_insec, NULL, NULL, 0 }, /* close */
419: { roff_unsupp, NULL, NULL, 0 }, /* CL */
420: { roff_line_ignore, NULL, NULL, 0 }, /* color */
421: { roff_unsupp, NULL, NULL, 0 }, /* composite */
422: { roff_unsupp, NULL, NULL, 0 }, /* continue */
423: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
424: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
425: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
426: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
427: { roff_unsupp, NULL, NULL, 0 }, /* da */
428: { roff_unsupp, NULL, NULL, 0 }, /* dch */
429: { roff_Dd, NULL, NULL, 0 }, /* Dd */
430: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
431: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
432: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
433: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
434: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
435: { roff_unsupp, NULL, NULL, 0 }, /* device */
436: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
437: { roff_unsupp, NULL, NULL, 0 }, /* di */
438: { roff_unsupp, NULL, NULL, 0 }, /* do */
439: { roff_ds, NULL, NULL, 0 }, /* ds */
440: { roff_ds, NULL, NULL, 0 }, /* ds1 */
441: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
442: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 443: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 444: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
445: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
446: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
447: { roff_unsupp, NULL, NULL, 0 }, /* em */
448: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 449: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 450: { roff_unsupp, NULL, NULL, 0 }, /* EP */
451: { roff_EQ, NULL, NULL, 0 }, /* EQ */
452: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
453: { roff_unsupp, NULL, NULL, 0 }, /* ev */
454: { roff_unsupp, NULL, NULL, 0 }, /* evc */
455: { roff_unsupp, NULL, NULL, 0 }, /* ex */
456: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
457: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
458: { roff_unsupp, NULL, NULL, 0 }, /* fc */
459: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
460: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
461: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
462: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
463: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
464: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
465: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
466: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
467: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
468: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
469: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
470: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
471: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
472: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
473: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
474: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
475: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
476: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
477: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
478: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
479: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
480: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
481: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
482: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
483: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
484: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
485: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
486: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
487: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
488: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
489: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
490: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
491: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
492: { roff_unsupp, NULL, NULL, 0 }, /* index */
493: { roff_it, NULL, NULL, 0 }, /* it */
494: { roff_unsupp, NULL, NULL, 0 }, /* itc */
495: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
496: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
497: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
498: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
499: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
500: { roff_unsupp, NULL, NULL, 0 }, /* lc */
501: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
502: { roff_unsupp, NULL, NULL, 0 }, /* lds */
503: { roff_unsupp, NULL, NULL, 0 }, /* length */
504: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
505: { roff_insec, NULL, NULL, 0 }, /* lf */
506: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
507: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
508: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
509: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
510: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
511: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
512: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
513: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
514: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
515: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
516: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
517: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
518: { roff_insec, NULL, NULL, 0 }, /* mso */
519: { roff_line_ignore, NULL, NULL, 0 }, /* na */
520: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
521: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
522: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
523: { roff_unsupp, NULL, NULL, 0 }, /* nm */
524: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.202 schwarze 525: { roff_nop, NULL, NULL, 0 }, /* nop */
1.167 schwarze 526: { roff_nr, NULL, NULL, 0 }, /* nr */
527: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
528: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
529: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
530: { roff_insec, NULL, NULL, 0 }, /* nx */
531: { roff_insec, NULL, NULL, 0 }, /* open */
532: { roff_insec, NULL, NULL, 0 }, /* opena */
533: { roff_line_ignore, NULL, NULL, 0 }, /* os */
534: { roff_unsupp, NULL, NULL, 0 }, /* output */
535: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
536: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
537: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
538: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
539: { roff_insec, NULL, NULL, 0 }, /* pi */
540: { roff_unsupp, NULL, NULL, 0 }, /* PI */
541: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
542: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
543: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
544: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
545: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
546: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
547: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
548: { roff_insec, NULL, NULL, 0 }, /* pso */
549: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
550: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
551: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
552: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
553: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.211 schwarze 554: { roff_return, NULL, NULL, 0 }, /* return */
1.167 schwarze 555: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
556: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
557: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 558: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 559: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
560: { roff_rr, NULL, NULL, 0 }, /* rr */
561: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
562: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
563: { roff_unsupp, NULL, NULL, 0 }, /* schar */
564: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
565: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.211 schwarze 566: { roff_shift, NULL, NULL, 0 }, /* shift */
1.167 schwarze 567: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
568: { roff_so, NULL, NULL, 0 }, /* so */
569: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
570: { roff_line_ignore, NULL, NULL, 0 }, /* special */
571: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
572: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
573: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
574: { roff_unsupp, NULL, NULL, 0 }, /* substring */
575: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
576: { roff_insec, NULL, NULL, 0 }, /* sy */
577: { roff_T_, NULL, NULL, 0 }, /* T& */
578: { roff_unsupp, NULL, NULL, 0 }, /* tc */
579: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 580: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 581: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
582: { roff_unsupp, NULL, NULL, 0 }, /* tl */
583: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
584: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
585: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
586: { roff_tr, NULL, NULL, 0 }, /* tr */
587: { roff_line_ignore, NULL, NULL, 0 }, /* track */
588: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
589: { roff_insec, NULL, NULL, 0 }, /* trf */
590: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
591: { roff_unsupp, NULL, NULL, 0 }, /* trin */
592: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
593: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
594: { roff_TS, NULL, NULL, 0 }, /* TS */
595: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
596: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
597: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
598: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
599: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
600: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
601: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
602: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
603: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
604: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
605: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
606: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
607: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.212 schwarze 608: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.167 schwarze 609: { roff_insec, NULL, NULL, 0 }, /* write */
610: { roff_insec, NULL, NULL, 0 }, /* writec */
611: { roff_insec, NULL, NULL, 0 }, /* writem */
612: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
613: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 614: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 615: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 616: };
617:
1.37 schwarze 618: /* Array of injected predefined strings. */
619: #define PREDEFS_MAX 38
620: static const struct predef predefs[PREDEFS_MAX] = {
621: #include "predefs.in"
622: };
623:
1.177 schwarze 624: static int roffce_lines; /* number of input lines to center */
625: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 626: static int roffit_lines; /* number of lines to delay */
627: static char *roffit_macro; /* nil-terminated macro line */
628:
1.80 schwarze 629:
1.138 schwarze 630: /* --- request table ------------------------------------------------------ */
631:
1.167 schwarze 632: struct ohash *
633: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 634: {
1.167 schwarze 635: struct ohash *htab;
636: struct roffreq *req;
637: enum roff_tok tok;
638: size_t sz;
639: unsigned int slot;
1.3 schwarze 640:
1.167 schwarze 641: htab = mandoc_malloc(sizeof(*htab));
642: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 643:
1.167 schwarze 644: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 645: if (roff_name[tok] == NULL)
646: continue;
1.167 schwarze 647: sz = strlen(roff_name[tok]);
648: req = mandoc_malloc(sizeof(*req) + sz + 1);
649: req->tok = tok;
650: memcpy(req->name, roff_name[tok], sz + 1);
651: slot = ohash_qlookup(htab, req->name);
652: ohash_insert(htab, slot, req);
1.3 schwarze 653: }
1.167 schwarze 654: return htab;
1.3 schwarze 655: }
656:
1.167 schwarze 657: void
658: roffhash_free(struct ohash *htab)
1.1 schwarze 659: {
1.167 schwarze 660: struct roffreq *req;
661: unsigned int slot;
1.1 schwarze 662:
1.167 schwarze 663: if (htab == NULL)
664: return;
665: for (req = ohash_first(htab, &slot); req != NULL;
666: req = ohash_next(htab, &slot))
667: free(req);
668: ohash_delete(htab);
669: free(htab);
670: }
671:
672: enum roff_tok
673: roffhash_find(struct ohash *htab, const char *name, size_t sz)
674: {
675: struct roffreq *req;
676: const char *end;
677:
678: if (sz) {
679: end = name + sz;
680: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
681: } else
682: req = ohash_find(htab, ohash_qlookup(htab, name));
683: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 684: }
685:
1.138 schwarze 686: /* --- stack of request blocks -------------------------------------------- */
687:
1.1 schwarze 688: /*
689: * Pop the current node off of the stack of roff instructions currently
1.236 schwarze 690: * pending. Return 1 if it is a loop or 0 otherwise.
1.1 schwarze 691: */
1.212 schwarze 692: static int
1.1 schwarze 693: roffnode_pop(struct roff *r)
694: {
695: struct roffnode *p;
1.212 schwarze 696: int inloop;
1.1 schwarze 697:
1.80 schwarze 698: p = r->last;
1.212 schwarze 699: inloop = p->tok == ROFF_while;
700: r->last = p->parent;
1.16 schwarze 701: free(p->name);
702: free(p->end);
1.1 schwarze 703: free(p);
1.212 schwarze 704: return inloop;
1.1 schwarze 705: }
706:
707: /*
708: * Push a roff node onto the instruction stack. This must later be
709: * removed with roffnode_pop().
710: */
1.11 schwarze 711: static void
1.166 schwarze 712: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 713: int line, int col)
1.1 schwarze 714: {
715: struct roffnode *p;
716:
1.11 schwarze 717: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 718: p->tok = tok;
1.16 schwarze 719: if (name)
720: p->name = mandoc_strdup(name);
1.1 schwarze 721: p->parent = r->last;
722: p->line = line;
723: p->col = col;
1.71 schwarze 724: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 725:
726: r->last = p;
727: }
728:
1.138 schwarze 729: /* --- roff parser state data management ---------------------------------- */
730:
1.1 schwarze 731: static void
732: roff_free1(struct roff *r)
733: {
1.42 schwarze 734: int i;
1.27 schwarze 735:
1.218 schwarze 736: tbl_free(r->first_tbl);
1.27 schwarze 737: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 738:
1.219 schwarze 739: eqn_free(r->last_eqn);
1.191 schwarze 740: r->last_eqn = r->eqn = NULL;
1.32 schwarze 741:
1.211 schwarze 742: while (r->mstackpos >= 0)
743: roff_userret(r);
744:
1.1 schwarze 745: while (r->last)
746: roffnode_pop(r);
1.27 schwarze 747:
1.96 schwarze 748: free (r->rstack);
749: r->rstack = NULL;
750: r->rstacksz = 0;
751: r->rstackpos = -1;
752:
753: roff_freereg(r->regtab);
754: r->regtab = NULL;
755:
1.42 schwarze 756: roff_freestr(r->strtab);
1.178 schwarze 757: roff_freestr(r->rentab);
1.42 schwarze 758: roff_freestr(r->xmbtab);
1.178 schwarze 759: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 760:
761: if (r->xtab)
762: for (i = 0; i < 128; i++)
763: free(r->xtab[i].p);
764: free(r->xtab);
765: r->xtab = NULL;
1.1 schwarze 766: }
767:
768: void
769: roff_reset(struct roff *r)
770: {
771: roff_free1(r);
1.99 schwarze 772: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 773: r->control = '\0';
774: r->escape = '\\';
1.179 schwarze 775: roffce_lines = 0;
776: roffce_node = NULL;
777: roffit_lines = 0;
778: roffit_macro = NULL;
1.1 schwarze 779: }
780:
781: void
782: roff_free(struct roff *r)
783: {
1.238 ! schwarze 784: int i;
1.211 schwarze 785:
1.1 schwarze 786: roff_free1(r);
1.211 schwarze 787: for (i = 0; i < r->mstacksz; i++)
788: free(r->mstack[i].argv);
789: free(r->mstack);
1.167 schwarze 790: roffhash_free(r->reqtab);
1.1 schwarze 791: free(r);
792: }
793:
794: struct roff *
1.223 schwarze 795: roff_alloc(int options)
1.1 schwarze 796: {
797: struct roff *r;
798:
1.11 schwarze 799: r = mandoc_calloc(1, sizeof(struct roff));
1.200 schwarze 800: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.72 schwarze 801: r->options = options;
1.99 schwarze 802: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.211 schwarze 803: r->mstackpos = -1;
1.2 schwarze 804: r->rstackpos = -1;
1.175 schwarze 805: r->escape = '\\';
1.149 schwarze 806: return r;
1.137 schwarze 807: }
808:
1.138 schwarze 809: /* --- syntax tree state data management ---------------------------------- */
810:
1.137 schwarze 811: static void
812: roff_man_free1(struct roff_man *man)
813: {
1.228 schwarze 814: if (man->meta.first != NULL)
815: roff_node_delete(man, man->meta.first);
1.137 schwarze 816: free(man->meta.msec);
817: free(man->meta.vol);
818: free(man->meta.os);
819: free(man->meta.arch);
820: free(man->meta.title);
821: free(man->meta.name);
822: free(man->meta.date);
1.228 schwarze 823: free(man->meta.sodest);
1.137 schwarze 824: }
825:
1.229 schwarze 826: void
827: roff_state_reset(struct roff_man *man)
828: {
829: man->last = man->meta.first;
830: man->last_es = NULL;
831: man->flags = 0;
832: man->lastsec = man->lastnamed = SEC_NONE;
833: man->next = ROFF_NEXT_CHILD;
834: roff_setreg(man->roff, "nS", 0, '=');
835: }
836:
1.137 schwarze 837: static void
838: roff_man_alloc1(struct roff_man *man)
839: {
840: memset(&man->meta, 0, sizeof(man->meta));
1.228 schwarze 841: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
842: man->meta.first->type = ROFFT_ROOT;
843: man->meta.macroset = MACROSET_NONE;
1.229 schwarze 844: roff_state_reset(man);
1.137 schwarze 845: }
846:
847: void
848: roff_man_reset(struct roff_man *man)
849: {
850: roff_man_free1(man);
851: roff_man_alloc1(man);
852: }
853:
854: void
855: roff_man_free(struct roff_man *man)
856: {
857: roff_man_free1(man);
858: free(man);
859: }
860:
861: struct roff_man *
1.223 schwarze 862: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.137 schwarze 863: {
864: struct roff_man *man;
865:
866: man = mandoc_calloc(1, sizeof(*man));
867: man->roff = roff;
1.188 schwarze 868: man->os_s = os_s;
1.137 schwarze 869: man->quick = quick;
870: roff_man_alloc1(man);
1.168 schwarze 871: roff->man = man;
1.149 schwarze 872: return man;
1.1 schwarze 873: }
874:
1.138 schwarze 875: /* --- syntax tree handling ----------------------------------------------- */
876:
877: struct roff_node *
878: roff_node_alloc(struct roff_man *man, int line, int pos,
879: enum roff_type type, int tok)
880: {
881: struct roff_node *n;
882:
883: n = mandoc_calloc(1, sizeof(*n));
884: n->line = line;
885: n->pos = pos;
886: n->tok = tok;
887: n->type = type;
888: n->sec = man->lastsec;
889:
890: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 891: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 892: else
1.157 schwarze 893: n->flags &= ~NODE_SYNPRETTY;
1.232 schwarze 894: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.231 schwarze 895: n->flags |= NODE_NOFILL;
896: else
897: n->flags &= ~NODE_NOFILL;
1.138 schwarze 898: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 899: n->flags |= NODE_LINE;
1.138 schwarze 900: man->flags &= ~MDOC_NEWLINE;
901:
1.149 schwarze 902: return n;
1.138 schwarze 903: }
904:
905: void
906: roff_node_append(struct roff_man *man, struct roff_node *n)
907: {
908:
909: switch (man->next) {
910: case ROFF_NEXT_SIBLING:
1.153 schwarze 911: if (man->last->next != NULL) {
912: n->next = man->last->next;
913: man->last->next->prev = n;
914: } else
915: man->last->parent->last = n;
1.138 schwarze 916: man->last->next = n;
917: n->prev = man->last;
918: n->parent = man->last->parent;
919: break;
920: case ROFF_NEXT_CHILD:
1.159 schwarze 921: if (man->last->child != NULL) {
922: n->next = man->last->child;
923: man->last->child->prev = n;
924: } else
925: man->last->last = n;
1.138 schwarze 926: man->last->child = n;
927: n->parent = man->last;
928: break;
929: default:
930: abort();
931: }
1.154 schwarze 932: man->last = n;
1.138 schwarze 933:
934: switch (n->type) {
935: case ROFFT_HEAD:
936: n->parent->head = n;
937: break;
938: case ROFFT_BODY:
1.154 schwarze 939: if (n->end != ENDBODY_NOT)
940: return;
1.138 schwarze 941: n->parent->body = n;
942: break;
943: case ROFFT_TAIL:
944: n->parent->tail = n;
945: break;
946: default:
1.154 schwarze 947: return;
1.138 schwarze 948: }
1.154 schwarze 949:
950: /*
951: * Copy over the normalised-data pointer of our parent. Not
952: * everybody has one, but copying a null pointer is fine.
953: */
954:
955: n->norm = n->parent->norm;
956: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 957: }
958:
1.139 schwarze 959: void
960: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
961: {
962: struct roff_node *n;
963:
964: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
965: n->string = roff_strdup(man->roff, word);
966: roff_node_append(man, n);
1.158 schwarze 967: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 968: man->next = ROFF_NEXT_SIBLING;
969: }
970:
971: void
972: roff_word_append(struct roff_man *man, const char *word)
973: {
974: struct roff_node *n;
975: char *addstr, *newstr;
976:
977: n = man->last;
978: addstr = roff_strdup(man->roff, word);
979: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
980: free(addstr);
981: free(n->string);
982: n->string = newstr;
983: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 984: }
985:
986: void
987: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
988: {
989: struct roff_node *n;
990:
991: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
992: roff_node_append(man, n);
993: man->next = ROFF_NEXT_CHILD;
994: }
995:
996: struct roff_node *
997: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
998: {
999: struct roff_node *n;
1000:
1001: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1002: roff_node_append(man, n);
1003: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1004: return n;
1.139 schwarze 1005: }
1006:
1.138 schwarze 1007: struct roff_node *
1008: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1009: {
1010: struct roff_node *n;
1011:
1012: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1013: roff_node_append(man, n);
1014: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1015: return n;
1.138 schwarze 1016: }
1017:
1018: struct roff_node *
1019: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1020: {
1021: struct roff_node *n;
1022:
1023: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1024: roff_node_append(man, n);
1025: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1026: return n;
1.139 schwarze 1027: }
1028:
1.193 schwarze 1029: static void
1.218 schwarze 1030: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.139 schwarze 1031: {
1032: struct roff_node *n;
1.218 schwarze 1033: struct tbl_span *span;
1.139 schwarze 1034:
1.228 schwarze 1035: if (man->meta.macroset == MACROSET_MAN)
1.174 schwarze 1036: man_breakscope(man, ROFF_TS);
1.193 schwarze 1037: while ((span = tbl_span(tbl)) != NULL) {
1.218 schwarze 1038: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.193 schwarze 1039: n->span = span;
1040: roff_node_append(man, n);
1041: n->flags |= NODE_VALID | NODE_ENDED;
1042: man->next = ROFF_NEXT_SIBLING;
1043: }
1.138 schwarze 1044: }
1045:
1046: void
1047: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1048: {
1049:
1050: /* Adjust siblings. */
1051:
1052: if (n->prev)
1053: n->prev->next = n->next;
1054: if (n->next)
1055: n->next->prev = n->prev;
1056:
1057: /* Adjust parent. */
1058:
1059: if (n->parent != NULL) {
1060: if (n->parent->child == n)
1061: n->parent->child = n->next;
1062: if (n->parent->last == n)
1063: n->parent->last = n->prev;
1064: }
1065:
1066: /* Adjust parse point. */
1067:
1068: if (man == NULL)
1069: return;
1070: if (man->last == n) {
1071: if (n->prev == NULL) {
1072: man->last = n->parent;
1073: man->next = ROFF_NEXT_CHILD;
1074: } else {
1075: man->last = n->prev;
1076: man->next = ROFF_NEXT_SIBLING;
1077: }
1078: }
1.228 schwarze 1079: if (man->meta.first == n)
1080: man->meta.first = NULL;
1.216 schwarze 1081: }
1082:
1083: void
1084: roff_node_relink(struct roff_man *man, struct roff_node *n)
1085: {
1086: roff_node_unlink(man, n);
1087: n->prev = n->next = NULL;
1088: roff_node_append(man, n);
1.138 schwarze 1089: }
1090:
1091: void
1092: roff_node_free(struct roff_node *n)
1093: {
1094:
1095: if (n->args != NULL)
1096: mdoc_argv_free(n->args);
1097: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1098: free(n->norm);
1.219 schwarze 1099: eqn_box_free(n->eqn);
1.138 schwarze 1100: free(n->string);
1101: free(n);
1102: }
1103:
1104: void
1105: roff_node_delete(struct roff_man *man, struct roff_node *n)
1106: {
1107:
1108: while (n->child != NULL)
1109: roff_node_delete(man, n->child);
1110: roff_node_unlink(man, n);
1111: roff_node_free(n);
1.141 schwarze 1112: }
1113:
1114: void
1115: deroff(char **dest, const struct roff_node *n)
1116: {
1117: char *cp;
1118: size_t sz;
1119:
1120: if (n->type != ROFFT_TEXT) {
1121: for (n = n->child; n != NULL; n = n->next)
1122: deroff(dest, n);
1123: return;
1124: }
1125:
1.160 schwarze 1126: /* Skip leading whitespace. */
1.141 schwarze 1127:
1.160 schwarze 1128: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1129: if (cp[0] == '\\' && cp[1] != '\0' &&
1130: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1131: cp++;
1.160 schwarze 1132: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1133: break;
1134: }
1135:
1.161 schwarze 1136: /* Skip trailing backslash. */
1137:
1138: sz = strlen(cp);
1.162 schwarze 1139: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1140: sz--;
1141:
1.141 schwarze 1142: /* Skip trailing whitespace. */
1143:
1.161 schwarze 1144: for (; sz; sz--)
1.141 schwarze 1145: if ( ! isspace((unsigned char)cp[sz-1]))
1146: break;
1147:
1148: /* Skip empty strings. */
1149:
1150: if (sz == 0)
1151: return;
1152:
1153: if (*dest == NULL) {
1154: *dest = mandoc_strndup(cp, sz);
1155: return;
1156: }
1157:
1158: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1159: free(*dest);
1160: *dest = cp;
1.138 schwarze 1161: }
1162:
1163: /* --- main functions of the roff parser ---------------------------------- */
1164:
1.8 schwarze 1165: /*
1.227 schwarze 1166: * In the current line, expand escape sequences that produce parsable
1167: * input text. Also check the syntax of the remaining escape sequences,
1168: * which typically produce output glyphs or change formatter state.
1.8 schwarze 1169: */
1.212 schwarze 1170: static int
1.227 schwarze 1171: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char newesc)
1.8 schwarze 1172: {
1.211 schwarze 1173: struct mctx *ctx; /* current macro call context */
1.81 schwarze 1174: char ubuf[24]; /* buffer to print the number */
1.200 schwarze 1175: struct roff_node *n; /* used for header comments */
1.78 schwarze 1176: const char *start; /* start of the string to process */
1.82 schwarze 1177: char *stesc; /* start of an escape sequence ('\\') */
1.224 schwarze 1178: const char *esct; /* type of esccape sequence */
1.200 schwarze 1179: char *ep; /* end of comment string */
1.23 schwarze 1180: const char *stnam; /* start of the name, after "[(*" */
1181: const char *cp; /* end of the name, e.g. before ']' */
1182: const char *res; /* the string to be substituted */
1.110 schwarze 1183: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1184: size_t maxl; /* expected length of the escape name */
1185: size_t naml; /* actual length of the escape name */
1.211 schwarze 1186: size_t asz; /* length of the replacement */
1187: size_t rsz; /* length of the rest of the string */
1.109 schwarze 1188: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1189: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1190: int npos; /* position in numeric expression */
1.91 schwarze 1191: int arg_complete; /* argument not interrupted by eol */
1.211 schwarze 1192: int quote_args; /* true for \\$@, false for \\$* */
1.175 schwarze 1193: int done; /* no more input available */
1.187 schwarze 1194: int deftype; /* type of definition to paste */
1.195 schwarze 1195: int rcsid; /* kind of RCS id seen */
1.224 schwarze 1196: enum mandocerr err; /* for escape sequence problems */
1.199 schwarze 1197: char sign; /* increment number register */
1.79 schwarze 1198: char term; /* character terminating the escape */
1.8 schwarze 1199:
1.175 schwarze 1200: /* Search forward for comments. */
1201:
1202: done = 0;
1203: start = buf->buf + pos;
1204: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1.227 schwarze 1205: if (stesc[0] != newesc || stesc[1] == '\0')
1.175 schwarze 1206: continue;
1207: stesc++;
1208: if (*stesc != '"' && *stesc != '#')
1209: continue;
1.185 schwarze 1210:
1211: /* Comment found, look for RCS id. */
1212:
1.195 schwarze 1213: rcsid = 0;
1.185 schwarze 1214: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.195 schwarze 1215: rcsid = 1 << MANDOC_OS_OPENBSD;
1.185 schwarze 1216: cp += 8;
1217: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.195 schwarze 1218: rcsid = 1 << MANDOC_OS_NETBSD;
1.185 schwarze 1219: cp += 7;
1220: }
1221: if (cp != NULL &&
1222: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1223: strchr(cp, '$') != NULL) {
1.195 schwarze 1224: if (r->man->meta.rcsids & rcsid)
1.222 schwarze 1225: mandoc_msg(MANDOCERR_RCS_REP, ln,
1226: (int)(stesc - buf->buf) + 1,
1227: "%s", stesc + 1);
1.195 schwarze 1228: r->man->meta.rcsids |= rcsid;
1.186 schwarze 1229: }
1.185 schwarze 1230:
1231: /* Handle trailing whitespace. */
1232:
1.200 schwarze 1233: ep = strchr(stesc--, '\0') - 1;
1234: if (*ep == '\n') {
1.175 schwarze 1235: done = 1;
1.200 schwarze 1236: ep--;
1.175 schwarze 1237: }
1.200 schwarze 1238: if (*ep == ' ' || *ep == '\t')
1.222 schwarze 1239: mandoc_msg(MANDOCERR_SPACE_EOL,
1240: ln, (int)(ep - buf->buf), NULL);
1.200 schwarze 1241:
1242: /*
1243: * Save comments preceding the title macro
1244: * in the syntax tree.
1245: */
1246:
1.227 schwarze 1247: if (newesc != ASCII_ESC && r->format == 0) {
1.200 schwarze 1248: while (*ep == ' ' || *ep == '\t')
1249: ep--;
1250: ep[1] = '\0';
1251: n = roff_node_alloc(r->man,
1252: ln, stesc + 1 - buf->buf,
1253: ROFFT_COMMENT, TOKEN_NONE);
1254: n->string = mandoc_strdup(stesc + 2);
1255: roff_node_append(r->man, n);
1256: n->flags |= NODE_VALID | NODE_ENDED;
1257: r->man->next = ROFF_NEXT_SIBLING;
1258: }
1259:
1.206 schwarze 1260: /* Line continuation with comment. */
1261:
1262: if (stesc[1] == '#') {
1263: *stesc = '\0';
1.212 schwarze 1264: return ROFF_IGN | ROFF_APPEND;
1.206 schwarze 1265: }
1266:
1267: /* Discard normal comments. */
1.200 schwarze 1268:
1.207 schwarze 1269: while (stesc > start && stesc[-1] == ' ' &&
1270: (stesc == start + 1 || stesc[-2] != '\\'))
1.175 schwarze 1271: stesc--;
1272: *stesc = '\0';
1273: break;
1274: }
1275: if (stesc == start)
1276: return ROFF_CONT;
1277: stesc--;
1278:
1279: /* Notice the end of the input. */
1280:
1281: if (*stesc == '\n') {
1282: *stesc-- = '\0';
1283: done = 1;
1284: }
1285:
1.43 schwarze 1286: expand_count = 0;
1.175 schwarze 1287: while (stesc >= start) {
1.227 schwarze 1288: if (*stesc != newesc) {
1.43 schwarze 1289:
1.227 schwarze 1290: /*
1291: * If we have a non-standard escape character,
1292: * escape literal backslashes because all
1293: * processing in subsequent functions uses
1294: * the standard escaping rules.
1295: */
1.78 schwarze 1296:
1.227 schwarze 1297: if (newesc != ASCII_ESC && *stesc == '\\') {
1.175 schwarze 1298: *stesc = '\0';
1299: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1300: buf->buf, stesc + 1) + 1;
1301: start = nbuf + pos;
1302: stesc = nbuf + (stesc - buf->buf);
1303: free(buf->buf);
1304: buf->buf = nbuf;
1305: }
1.227 schwarze 1306:
1307: /* Search backwards for the next escape. */
1308:
1.175 schwarze 1309: stesc--;
1.78 schwarze 1310: continue;
1.175 schwarze 1311: }
1.78 schwarze 1312:
1313: /* If it is escaped, skip it. */
1314:
1315: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1316: if (*cp != r->escape)
1.78 schwarze 1317: break;
1318:
1.110 schwarze 1319: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1320: while (stesc > cp)
1321: *stesc-- = '\\';
1.78 schwarze 1322: continue;
1.175 schwarze 1323: } else if (stesc[1] != '\0') {
1324: *stesc = '\\';
1325: } else {
1326: *stesc-- = '\0';
1327: if (done)
1328: continue;
1329: else
1.212 schwarze 1330: return ROFF_IGN | ROFF_APPEND;
1.78 schwarze 1331: }
1.23 schwarze 1332:
1.79 schwarze 1333: /* Decide whether to expand or to check only. */
1.23 schwarze 1334:
1.79 schwarze 1335: term = '\0';
1.78 schwarze 1336: cp = stesc + 1;
1.224 schwarze 1337: if (*cp == 'E')
1338: cp++;
1339: esct = cp;
1340: switch (*esct) {
1.80 schwarze 1341: case '*':
1.211 schwarze 1342: case '$':
1.53 schwarze 1343: res = NULL;
1344: break;
1.80 schwarze 1345: case 'B':
1346: case 'w':
1.79 schwarze 1347: term = cp[1];
1348: /* FALLTHROUGH */
1.80 schwarze 1349: case 'n':
1.199 schwarze 1350: sign = cp[1];
1351: if (sign == '+' || sign == '-')
1352: cp++;
1.53 schwarze 1353: res = ubuf;
1354: break;
1355: default:
1.224 schwarze 1356: err = MANDOCERR_OK;
1357: switch(mandoc_escape(&cp, &stnam, &inaml)) {
1358: case ESCAPE_SPECIAL:
1359: if (mchars_spec2cp(stnam, inaml) >= 0)
1360: break;
1361: /* FALLTHROUGH */
1362: case ESCAPE_ERROR:
1363: err = MANDOCERR_ESC_BAD;
1364: break;
1365: case ESCAPE_UNDEF:
1366: err = MANDOCERR_ESC_UNDEF;
1367: break;
1368: case ESCAPE_UNSUPP:
1369: err = MANDOCERR_ESC_UNSUPP;
1370: break;
1371: default:
1372: break;
1373: }
1374: if (err != MANDOCERR_OK)
1375: mandoc_msg(err, ln, (int)(stesc - buf->buf),
1.92 schwarze 1376: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1377: stesc--;
1.78 schwarze 1378: continue;
1.42 schwarze 1379: }
1380:
1.78 schwarze 1381: if (EXPAND_LIMIT < ++expand_count) {
1.222 schwarze 1382: mandoc_msg(MANDOCERR_ROFFLOOP,
1.110 schwarze 1383: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1384: return ROFF_IGN;
1.78 schwarze 1385: }
1.23 schwarze 1386:
1387: /*
1388: * The third character decides the length
1.53 schwarze 1389: * of the name of the string or register.
1.23 schwarze 1390: * Save a pointer to the name.
1391: */
1392:
1.110 schwarze 1393: if (term == '\0') {
1.79 schwarze 1394: switch (*++cp) {
1.80 schwarze 1395: case '\0':
1.79 schwarze 1396: maxl = 0;
1397: break;
1.80 schwarze 1398: case '(':
1.79 schwarze 1399: cp++;
1400: maxl = 2;
1401: break;
1.80 schwarze 1402: case '[':
1.79 schwarze 1403: cp++;
1404: term = ']';
1405: maxl = 0;
1406: break;
1407: default:
1408: maxl = 1;
1409: break;
1410: }
1411: } else {
1412: cp += 2;
1.8 schwarze 1413: maxl = 0;
1414: }
1.23 schwarze 1415: stnam = cp;
1.8 schwarze 1416:
1.23 schwarze 1417: /* Advance to the end of the name. */
1.8 schwarze 1418:
1.125 schwarze 1419: naml = 0;
1.91 schwarze 1420: arg_complete = 1;
1.125 schwarze 1421: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1422: if (*cp == '\0') {
1.222 schwarze 1423: mandoc_msg(MANDOCERR_ESC_BAD, ln,
1424: (int)(stesc - buf->buf), "%s", stesc);
1.91 schwarze 1425: arg_complete = 0;
1.79 schwarze 1426: break;
1.42 schwarze 1427: }
1.110 schwarze 1428: if (maxl == 0 && *cp == term) {
1.79 schwarze 1429: cp++;
1.125 schwarze 1430: break;
1431: }
1.224 schwarze 1432: if (*cp++ != '\\' || *esct != 'w') {
1.125 schwarze 1433: naml++;
1434: continue;
1435: }
1436: switch (mandoc_escape(&cp, NULL, NULL)) {
1437: case ESCAPE_SPECIAL:
1438: case ESCAPE_UNICODE:
1439: case ESCAPE_NUMBERED:
1.224 schwarze 1440: case ESCAPE_UNDEF:
1.125 schwarze 1441: case ESCAPE_OVERSTRIKE:
1442: naml++;
1443: break;
1444: default:
1.8 schwarze 1445: break;
1.79 schwarze 1446: }
1.8 schwarze 1447: }
1448:
1.23 schwarze 1449: /*
1450: * Retrieve the replacement string; if it is
1451: * undefined, resume searching for escapes.
1452: */
1453:
1.224 schwarze 1454: switch (*esct) {
1.80 schwarze 1455: case '*':
1.187 schwarze 1456: if (arg_complete) {
1457: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1458: res = roff_getstrn(r, stnam, naml, &deftype);
1.203 schwarze 1459:
1460: /*
1461: * If not overriden, let \*(.T
1462: * through to the formatters.
1463: */
1464:
1465: if (res == NULL && naml == 2 &&
1466: stnam[0] == '.' && stnam[1] == 'T') {
1467: roff_setstrn(&r->strtab,
1468: ".T", 2, NULL, 0, 0);
1469: stesc--;
1470: continue;
1471: }
1.187 schwarze 1472: }
1.79 schwarze 1473: break;
1.211 schwarze 1474: case '$':
1475: if (r->mstackpos < 0) {
1.222 schwarze 1476: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
1477: (int)(stesc - buf->buf), "%.3s", stesc);
1.211 schwarze 1478: break;
1479: }
1480: ctx = r->mstack + r->mstackpos;
1.224 schwarze 1481: npos = esct[1] - '1';
1.211 schwarze 1482: if (npos >= 0 && npos <= 8) {
1483: res = npos < ctx->argc ?
1484: ctx->argv[npos] : "";
1485: break;
1486: }
1.224 schwarze 1487: if (esct[1] == '*')
1.211 schwarze 1488: quote_args = 0;
1.224 schwarze 1489: else if (esct[1] == '@')
1.211 schwarze 1490: quote_args = 1;
1491: else {
1.222 schwarze 1492: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
1493: (int)(stesc - buf->buf), "%.3s", stesc);
1.211 schwarze 1494: break;
1495: }
1496: asz = 0;
1497: for (npos = 0; npos < ctx->argc; npos++) {
1498: if (npos)
1499: asz++; /* blank */
1500: if (quote_args)
1501: asz += 2; /* quotes */
1502: asz += strlen(ctx->argv[npos]);
1503: }
1504: if (asz != 3) {
1505: rsz = buf->sz - (stesc - buf->buf) - 3;
1506: if (asz < 3)
1507: memmove(stesc + asz, stesc + 3, rsz);
1508: buf->sz += asz - 3;
1509: nbuf = mandoc_realloc(buf->buf, buf->sz);
1510: start = nbuf + pos;
1511: stesc = nbuf + (stesc - buf->buf);
1512: buf->buf = nbuf;
1513: if (asz > 3)
1514: memmove(stesc + asz, stesc + 3, rsz);
1515: }
1516: for (npos = 0; npos < ctx->argc; npos++) {
1517: if (npos)
1518: *stesc++ = ' ';
1519: if (quote_args)
1520: *stesc++ = '"';
1521: cp = ctx->argv[npos];
1522: while (*cp != '\0')
1523: *stesc++ = *cp++;
1524: if (quote_args)
1525: *stesc++ = '"';
1526: }
1527: continue;
1.80 schwarze 1528: case 'B':
1.79 schwarze 1529: npos = 0;
1.91 schwarze 1530: ubuf[0] = arg_complete &&
1.133 schwarze 1531: roff_evalnum(r, ln, stnam, &npos,
1532: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1533: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1534: ubuf[1] = '\0';
1535: break;
1.80 schwarze 1536: case 'n':
1.91 schwarze 1537: if (arg_complete)
1538: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.199 schwarze 1539: roff_getregn(r, stnam, naml, sign));
1.91 schwarze 1540: else
1541: ubuf[0] = '\0';
1.79 schwarze 1542: break;
1.80 schwarze 1543: case 'w':
1.91 schwarze 1544: /* use even incomplete args */
1.81 schwarze 1545: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1546: 24 * (int)naml);
1547: break;
1548: }
1.8 schwarze 1549:
1.110 schwarze 1550: if (res == NULL) {
1.224 schwarze 1551: if (*esct == '*')
1.222 schwarze 1552: mandoc_msg(MANDOCERR_STR_UNDEF,
1553: ln, (int)(stesc - buf->buf),
1.211 schwarze 1554: "%.*s", (int)naml, stnam);
1.37 schwarze 1555: res = "";
1.118 schwarze 1556: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.222 schwarze 1557: mandoc_msg(MANDOCERR_ROFFLOOP,
1.118 schwarze 1558: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1559: return ROFF_IGN;
1.8 schwarze 1560: }
1561:
1.23 schwarze 1562: /* Replace the escape sequence by the string. */
1563:
1.82 schwarze 1564: *stesc = '\0';
1.110 schwarze 1565: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1566: buf->buf, res, cp) + 1;
1.8 schwarze 1567:
1.78 schwarze 1568: /* Prepare for the next replacement. */
1.8 schwarze 1569:
1.78 schwarze 1570: start = nbuf + pos;
1.110 schwarze 1571: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1572: free(buf->buf);
1573: buf->buf = nbuf;
1.42 schwarze 1574: }
1.149 schwarze 1575: return ROFF_CONT;
1.42 schwarze 1576: }
1.225 schwarze 1577:
1578: /*
1579: * Parse a quoted or unquoted roff-style request or macro argument.
1580: * Return a pointer to the parsed argument, which is either the original
1581: * pointer or advanced by one byte in case the argument is quoted.
1582: * NUL-terminate the argument in place.
1583: * Collapse pairs of quotes inside quoted arguments.
1584: * Advance the argument pointer to the next argument,
1585: * or to the NUL byte terminating the argument line.
1586: */
1587: char *
1.227 schwarze 1588: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.225 schwarze 1589: {
1.227 schwarze 1590: struct buf buf;
1.238 ! schwarze 1591: char *cp, *start;
1.227 schwarze 1592: int newesc, pairs, quoted, white;
1.225 schwarze 1593:
1594: /* Quoting can only start with a new word. */
1595: start = *cpp;
1596: quoted = 0;
1597: if ('"' == *start) {
1598: quoted = 1;
1599: start++;
1600: }
1601:
1.227 schwarze 1602: newesc = pairs = white = 0;
1.225 schwarze 1603: for (cp = start; '\0' != *cp; cp++) {
1604:
1605: /*
1606: * Move the following text left
1607: * after quoted quotes and after "\\" and "\t".
1608: */
1609: if (pairs)
1610: cp[-pairs] = cp[0];
1611:
1612: if ('\\' == cp[0]) {
1613: /*
1614: * In copy mode, translate double to single
1615: * backslashes and backslash-t to literal tabs.
1616: */
1617: switch (cp[1]) {
1618: case 'a':
1619: case 't':
1.226 schwarze 1620: cp[-pairs] = '\t';
1.227 schwarze 1621: pairs++;
1622: cp++;
1623: break;
1.225 schwarze 1624: case '\\':
1.227 schwarze 1625: newesc = 1;
1626: cp[-pairs] = ASCII_ESC;
1.225 schwarze 1627: pairs++;
1628: cp++;
1629: break;
1630: case ' ':
1631: /* Skip escaped blanks. */
1632: if (0 == quoted)
1633: cp++;
1634: break;
1635: default:
1636: break;
1637: }
1638: } else if (0 == quoted) {
1639: if (' ' == cp[0]) {
1640: /* Unescaped blanks end unquoted args. */
1641: white = 1;
1642: break;
1643: }
1644: } else if ('"' == cp[0]) {
1645: if ('"' == cp[1]) {
1646: /* Quoted quotes collapse. */
1647: pairs++;
1648: cp++;
1649: } else {
1650: /* Unquoted quotes end quoted args. */
1651: quoted = 2;
1652: break;
1653: }
1654: }
1655: }
1656:
1657: /* Quoted argument without a closing quote. */
1658: if (1 == quoted)
1659: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1660:
1661: /* NUL-terminate this argument and move to the next one. */
1662: if (pairs)
1663: cp[-pairs] = '\0';
1664: if ('\0' != *cp) {
1665: *cp++ = '\0';
1666: while (' ' == *cp)
1667: cp++;
1668: }
1669: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1670: *cpp = cp;
1671:
1672: if ('\0' == *cp && (white || ' ' == cp[-1]))
1673: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1674:
1.227 schwarze 1675: start = mandoc_strdup(start);
1676: if (newesc == 0)
1677: return start;
1678:
1679: buf.buf = start;
1680: buf.sz = strlen(start) + 1;
1681: buf.next = NULL;
1682: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1683: free(buf.buf);
1684: buf.buf = mandoc_strdup("");
1685: }
1686: return buf.buf;
1.225 schwarze 1687: }
1688:
1.42 schwarze 1689:
1690: /*
1.147 schwarze 1691: * Process text streams.
1.42 schwarze 1692: */
1.212 schwarze 1693: static int
1.177 schwarze 1694: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1695: {
1696: size_t sz;
1697: const char *start;
1.51 schwarze 1698: char *p;
1699: int isz;
1.42 schwarze 1700: enum mandoc_esc esc;
1701:
1.147 schwarze 1702: /* Spring the input line trap. */
1703:
1704: if (roffit_lines == 1) {
1705: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1706: free(buf->buf);
1707: buf->buf = p;
1708: buf->sz = isz + 1;
1709: *offs = 0;
1710: free(roffit_macro);
1711: roffit_lines = 0;
1.149 schwarze 1712: return ROFF_REPARSE;
1.147 schwarze 1713: } else if (roffit_lines > 1)
1714: --roffit_lines;
1715:
1.177 schwarze 1716: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1717: if (roffce_lines < 1) {
1718: r->man->last = roffce_node;
1719: r->man->next = ROFF_NEXT_SIBLING;
1720: roffce_lines = 0;
1721: roffce_node = NULL;
1722: } else
1723: roffce_lines--;
1724: }
1725:
1.147 schwarze 1726: /* Convert all breakable hyphens into ASCII_HYPH. */
1727:
1.110 schwarze 1728: start = p = buf->buf + pos;
1.42 schwarze 1729:
1.110 schwarze 1730: while (*p != '\0') {
1.42 schwarze 1731: sz = strcspn(p, "-\\");
1732: p += sz;
1733:
1.110 schwarze 1734: if (*p == '\0')
1.42 schwarze 1735: break;
1736:
1.110 schwarze 1737: if (*p == '\\') {
1.42 schwarze 1738: /* Skip over escapes. */
1739: p++;
1.62 schwarze 1740: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1741: if (esc == ESCAPE_ERROR)
1.42 schwarze 1742: break;
1.136 schwarze 1743: while (*p == '-')
1744: p++;
1.42 schwarze 1745: continue;
1746: } else if (p == start) {
1747: p++;
1748: continue;
1749: }
1750:
1.44 schwarze 1751: if (isalpha((unsigned char)p[-1]) &&
1752: isalpha((unsigned char)p[1]))
1.42 schwarze 1753: *p = ASCII_HYPH;
1754: p++;
1.8 schwarze 1755: }
1.149 schwarze 1756: return ROFF_CONT;
1.8 schwarze 1757: }
1758:
1.212 schwarze 1759: int
1.110 schwarze 1760: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1761: {
1.166 schwarze 1762: enum roff_tok t;
1.212 schwarze 1763: int e;
1.110 schwarze 1764: int pos; /* parse point */
1.115 schwarze 1765: int spos; /* saved parse point for messages */
1.110 schwarze 1766: int ppos; /* original offset in buf->buf */
1767: int ctl; /* macro line (boolean) */
1768:
1769: ppos = pos = *offs;
1.1 schwarze 1770:
1.102 schwarze 1771: /* Handle in-line equation delimiters. */
1772:
1.108 schwarze 1773: if (r->tbl == NULL &&
1774: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1775: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1776: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1777: if (e == ROFF_REPARSE)
1.149 schwarze 1778: return e;
1.102 schwarze 1779: assert(e == ROFF_CONT);
1780: }
1781:
1782: /* Expand some escape sequences. */
1.8 schwarze 1783:
1.227 schwarze 1784: e = roff_expand(r, buf, ln, pos, r->escape);
1.212 schwarze 1785: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1786: return e;
1.110 schwarze 1787: assert(e == ROFF_CONT);
1.8 schwarze 1788:
1.110 schwarze 1789: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1790:
1.8 schwarze 1791: /*
1.2 schwarze 1792: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1793: * text through the macro's filter.
1794: * Equations process all content themselves.
1795: * Tables process almost all content themselves, but we want
1796: * to warn about macros before passing it there.
1.2 schwarze 1797: */
1798:
1.124 schwarze 1799: if (r->last != NULL && ! ctl) {
1.2 schwarze 1800: t = r->last->tok;
1.110 schwarze 1801: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.212 schwarze 1802: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1803: return e;
1.212 schwarze 1804: e &= ~ROFF_MASK;
1805: } else
1806: e = ROFF_IGN;
1.191 schwarze 1807: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1808: eqn_read(r->eqn, buf->buf + ppos);
1.212 schwarze 1809: return e;
1.191 schwarze 1810: }
1.193 schwarze 1811: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1812: tbl_read(r->tbl, ln, buf->buf, ppos);
1.218 schwarze 1813: roff_addtbl(r->man, ln, r->tbl);
1.212 schwarze 1814: return e;
1.193 schwarze 1815: }
1.124 schwarze 1816: if ( ! ctl)
1.212 schwarze 1817: return roff_parsetext(r, buf, pos, offs) | e;
1.100 schwarze 1818:
1819: /* Skip empty request lines. */
1820:
1.110 schwarze 1821: if (buf->buf[pos] == '"') {
1.222 schwarze 1822: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.149 schwarze 1823: return ROFF_IGN;
1.110 schwarze 1824: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1825: return ROFF_IGN;
1.2 schwarze 1826:
1827: /*
1828: * If a scope is open, go to the child handler for that macro,
1829: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1830: * Don't do so if an equation is open.
1.2 schwarze 1831: */
1832:
1833: if (r->last) {
1.1 schwarze 1834: t = r->last->tok;
1.149 schwarze 1835: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1836: }
1837:
1.115 schwarze 1838: /* No scope is open. This is a new request or macro. */
1839:
1840: spos = pos;
1841: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1842:
1843: /* Tables ignore most macros. */
1844:
1.180 schwarze 1845: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1846: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.222 schwarze 1847: mandoc_msg(MANDOCERR_TBLMACRO,
1848: ln, pos, "%s", buf->buf + spos);
1.180 schwarze 1849: if (t != TOKEN_NONE)
1.149 schwarze 1850: return ROFF_IGN;
1.129 schwarze 1851: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1852: pos++;
1.163 schwarze 1853: while (buf->buf[pos] == ' ')
1.129 schwarze 1854: pos++;
1.193 schwarze 1855: tbl_read(r->tbl, ln, buf->buf, pos);
1.218 schwarze 1856: roff_addtbl(r->man, ln, r->tbl);
1.193 schwarze 1857: return ROFF_IGN;
1.115 schwarze 1858: }
1859:
1.177 schwarze 1860: /* For now, let high level macros abort .ce mode. */
1861:
1862: if (ctl && roffce_node != NULL &&
1.196 schwarze 1863: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1864: t == ROFF_TH || t == ROFF_TS)) {
1.177 schwarze 1865: r->man->last = roffce_node;
1866: r->man->next = ROFF_NEXT_SIBLING;
1867: roffce_lines = 0;
1868: roffce_node = NULL;
1869: }
1870:
1.2 schwarze 1871: /*
1.115 schwarze 1872: * This is neither a roff request nor a user-defined macro.
1873: * Let the standard macro set parsers handle it.
1.2 schwarze 1874: */
1875:
1.166 schwarze 1876: if (t == TOKEN_NONE)
1.149 schwarze 1877: return ROFF_CONT;
1.115 schwarze 1878:
1879: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1880:
1.168 schwarze 1881: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1882: }
1883:
1.211 schwarze 1884: /*
1885: * Internal interface function to tell the roff parser that execution
1886: * of the current macro ended. This is required because macro
1887: * definitions usually do not end with a .return request.
1888: */
1889: void
1890: roff_userret(struct roff *r)
1891: {
1892: struct mctx *ctx;
1893: int i;
1894:
1895: assert(r->mstackpos >= 0);
1896: ctx = r->mstack + r->mstackpos;
1897: for (i = 0; i < ctx->argc; i++)
1898: free(ctx->argv[i]);
1899: ctx->argc = 0;
1900: r->mstackpos--;
1901: }
1902:
1.27 schwarze 1903: void
1.2 schwarze 1904: roff_endparse(struct roff *r)
1905: {
1.193 schwarze 1906: if (r->last != NULL)
1.222 schwarze 1907: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1908: r->last->col, "%s", roff_name[r->last->tok]);
1.27 schwarze 1909:
1.193 schwarze 1910: if (r->eqn != NULL) {
1.222 schwarze 1911: mandoc_msg(MANDOCERR_BLK_NOEND,
1.191 schwarze 1912: r->eqn->node->line, r->eqn->node->pos, "EQ");
1913: eqn_parse(r->eqn);
1914: r->eqn = NULL;
1.32 schwarze 1915: }
1916:
1.193 schwarze 1917: if (r->tbl != NULL) {
1.218 schwarze 1918: tbl_end(r->tbl, 1);
1.193 schwarze 1919: r->tbl = NULL;
1.27 schwarze 1920: }
1.1 schwarze 1921: }
1922:
1923: /*
1924: * Parse a roff node's type from the input buffer. This must be in the
1925: * form of ".foo xxx" in the usual way.
1926: */
1.166 schwarze 1927: static enum roff_tok
1.87 schwarze 1928: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1929: {
1.87 schwarze 1930: char *cp;
1.16 schwarze 1931: const char *mac;
1932: size_t maclen;
1.187 schwarze 1933: int deftype;
1.166 schwarze 1934: enum roff_tok t;
1.1 schwarze 1935:
1.87 schwarze 1936: cp = buf + *pos;
1937:
1938: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1939: return TOKEN_NONE;
1.1 schwarze 1940:
1.87 schwarze 1941: mac = cp;
1942: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1943:
1.187 schwarze 1944: deftype = ROFFDEF_USER | ROFFDEF_REN;
1945: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1946: switch (deftype) {
1947: case ROFFDEF_USER:
1948: t = ROFF_USERDEF;
1949: break;
1950: case ROFFDEF_REN:
1951: t = ROFF_RENAMED;
1952: break;
1953: default:
1954: t = roffhash_find(r->reqtab, mac, maclen);
1955: break;
1956: }
1.166 schwarze 1957: if (t != TOKEN_NONE)
1.87 schwarze 1958: *pos = cp - buf;
1.197 schwarze 1959: else if (deftype == ROFFDEF_UNDEF) {
1960: /* Using an undefined macro defines it to be empty. */
1961: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1962: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1963: }
1.149 schwarze 1964: return t;
1.1 schwarze 1965: }
1966:
1.138 schwarze 1967: /* --- handling of request blocks ----------------------------------------- */
1968:
1.212 schwarze 1969: static int
1.2 schwarze 1970: roff_cblock(ROFF_ARGS)
1.1 schwarze 1971: {
1972:
1.2 schwarze 1973: /*
1974: * A block-close `..' should only be invoked as a child of an
1975: * ignore macro, otherwise raise a warning and just ignore it.
1976: */
1977:
1.110 schwarze 1978: if (r->last == NULL) {
1.222 schwarze 1979: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 1980: return ROFF_IGN;
1.2 schwarze 1981: }
1.1 schwarze 1982:
1.2 schwarze 1983: switch (r->last->tok) {
1.80 schwarze 1984: case ROFF_am:
1.93 schwarze 1985: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1986: case ROFF_ami:
1987: case ROFF_de:
1.23 schwarze 1988: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1989: case ROFF_dei:
1990: case ROFF_ig:
1.2 schwarze 1991: break;
1992: default:
1.222 schwarze 1993: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 1994: return ROFF_IGN;
1.2 schwarze 1995: }
1996:
1.110 schwarze 1997: if (buf->buf[pos] != '\0')
1.222 schwarze 1998: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 1999: ".. %s", buf->buf + pos);
1.2 schwarze 2000:
2001: roffnode_pop(r);
2002: roffnode_cleanscope(r);
1.149 schwarze 2003: return ROFF_IGN;
1.2 schwarze 2004:
2005: }
1.1 schwarze 2006:
1.236 schwarze 2007: /*
2008: * Pop all nodes ending at the end of the current input line.
2009: * Return the number of loops ended.
2010: */
1.212 schwarze 2011: static int
1.2 schwarze 2012: roffnode_cleanscope(struct roff *r)
2013: {
1.212 schwarze 2014: int inloop;
1.1 schwarze 2015:
1.212 schwarze 2016: inloop = 0;
2017: while (r->last != NULL) {
1.46 schwarze 2018: if (--r->last->endspan != 0)
1.2 schwarze 2019: break;
1.212 schwarze 2020: inloop += roffnode_pop(r);
1.2 schwarze 2021: }
1.212 schwarze 2022: return inloop;
1.2 schwarze 2023: }
1.1 schwarze 2024:
1.236 schwarze 2025: /*
2026: * Handle the closing \} of a conditional block.
2027: * Apart from generating warnings, this only pops nodes.
2028: * Return the number of loops ended.
2029: */
1.212 schwarze 2030: static int
1.68 schwarze 2031: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 2032: {
2033: if (NULL == r->last) {
1.222 schwarze 2034: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2035: return 0;
1.2 schwarze 2036: }
1.1 schwarze 2037:
1.2 schwarze 2038: switch (r->last->tok) {
1.80 schwarze 2039: case ROFF_el:
2040: case ROFF_ie:
2041: case ROFF_if:
1.212 schwarze 2042: case ROFF_while:
1.2 schwarze 2043: break;
2044: default:
1.222 schwarze 2045: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2046: return 0;
1.2 schwarze 2047: }
1.1 schwarze 2048:
1.2 schwarze 2049: if (r->last->endspan > -1) {
1.222 schwarze 2050: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2051: return 0;
1.2 schwarze 2052: }
2053:
1.212 schwarze 2054: return roffnode_pop(r) + roffnode_cleanscope(r);
1.1 schwarze 2055: }
2056:
1.212 schwarze 2057: static int
1.2 schwarze 2058: roff_block(ROFF_ARGS)
1.1 schwarze 2059: {
1.187 schwarze 2060: const char *name, *value;
2061: char *call, *cp, *iname, *rname;
2062: size_t csz, namesz, rsz;
2063: int deftype;
1.16 schwarze 2064:
1.93 schwarze 2065: /* Ignore groff compatibility mode for now. */
1.2 schwarze 2066:
1.110 schwarze 2067: if (tok == ROFF_de1)
1.93 schwarze 2068: tok = ROFF_de;
1.123 schwarze 2069: else if (tok == ROFF_dei1)
2070: tok = ROFF_dei;
1.110 schwarze 2071: else if (tok == ROFF_am1)
1.93 schwarze 2072: tok = ROFF_am;
1.123 schwarze 2073: else if (tok == ROFF_ami1)
2074: tok = ROFF_ami;
1.93 schwarze 2075:
2076: /* Parse the macro name argument. */
2077:
1.110 schwarze 2078: cp = buf->buf + pos;
2079: if (tok == ROFF_ig) {
1.93 schwarze 2080: iname = NULL;
2081: namesz = 0;
2082: } else {
2083: iname = cp;
2084: namesz = roff_getname(r, &cp, ln, ppos);
2085: iname[namesz] = '\0';
2086: }
1.22 schwarze 2087:
1.93 schwarze 2088: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 2089:
1.110 schwarze 2090: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2091: deftype = ROFFDEF_USER;
2092: name = roff_getstrn(r, iname, namesz, &deftype);
2093: if (name == NULL) {
1.222 schwarze 2094: mandoc_msg(MANDOCERR_STR_UNDEF,
2095: ln, (int)(iname - buf->buf),
1.93 schwarze 2096: "%.*s", (int)namesz, iname);
2097: namesz = 0;
2098: } else
2099: namesz = strlen(name);
2100: } else
2101: name = iname;
1.22 schwarze 2102:
1.110 schwarze 2103: if (namesz == 0 && tok != ROFF_ig) {
1.222 schwarze 2104: mandoc_msg(MANDOCERR_REQ_EMPTY,
2105: ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2106: return ROFF_IGN;
1.93 schwarze 2107: }
1.2 schwarze 2108:
1.16 schwarze 2109: roffnode_push(r, tok, name, ln, ppos);
2110:
2111: /*
2112: * At the beginning of a `de' macro, clear the existing string
2113: * with the same name, if there is one. New content will be
1.66 schwarze 2114: * appended from roff_block_text() in multiline mode.
1.16 schwarze 2115: */
1.22 schwarze 2116:
1.183 schwarze 2117: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 2118: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 2119: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 2120: } else if (tok == ROFF_am || tok == ROFF_ami) {
2121: deftype = ROFFDEF_ANY;
2122: value = roff_getstrn(r, iname, namesz, &deftype);
2123: switch (deftype) { /* Before appending, ... */
2124: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2125: roff_setstrn(&r->strtab, name, namesz,
2126: value, strlen(value), 0);
2127: break;
2128: case ROFFDEF_REN: /* call original standard macro. */
2129: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2130: (int)strlen(value), value);
2131: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2132: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2133: free(call);
2134: break;
2135: case ROFFDEF_STD: /* rename and call standard macro. */
2136: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2137: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2138: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2139: (int)rsz, rname);
2140: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2141: free(call);
2142: free(rname);
2143: break;
2144: default:
2145: break;
2146: }
1.183 schwarze 2147: }
1.2 schwarze 2148:
1.110 schwarze 2149: if (*cp == '\0')
1.149 schwarze 2150: return ROFF_IGN;
1.1 schwarze 2151:
1.93 schwarze 2152: /* Get the custom end marker. */
1.22 schwarze 2153:
1.93 schwarze 2154: iname = cp;
1.86 schwarze 2155: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 2156:
2157: /* Resolve the end marker if it is indirect. */
2158:
1.110 schwarze 2159: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2160: deftype = ROFFDEF_USER;
2161: name = roff_getstrn(r, iname, namesz, &deftype);
2162: if (name == NULL) {
1.222 schwarze 2163: mandoc_msg(MANDOCERR_STR_UNDEF,
2164: ln, (int)(iname - buf->buf),
1.93 schwarze 2165: "%.*s", (int)namesz, iname);
2166: namesz = 0;
2167: } else
2168: namesz = strlen(name);
2169: } else
2170: name = iname;
2171:
1.86 schwarze 2172: if (namesz)
2173: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 2174:
1.110 schwarze 2175: if (*cp != '\0')
1.222 schwarze 2176: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.167 schwarze 2177: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 2178:
1.149 schwarze 2179: return ROFF_IGN;
1.1 schwarze 2180: }
2181:
1.212 schwarze 2182: static int
1.2 schwarze 2183: roff_block_sub(ROFF_ARGS)
1.1 schwarze 2184: {
1.166 schwarze 2185: enum roff_tok t;
1.2 schwarze 2186: int i, j;
2187:
2188: /*
2189: * First check whether a custom macro exists at this level. If
2190: * it does, then check against it. This is some of groff's
2191: * stranger behaviours. If we encountered a custom end-scope
2192: * tag and that tag also happens to be a "real" macro, then we
2193: * need to try interpreting it again as a real macro. If it's
2194: * not, then return ignore. Else continue.
2195: */
2196:
2197: if (r->last->end) {
1.35 schwarze 2198: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 2199: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 2200: break;
1.1 schwarze 2201:
1.110 schwarze 2202: if (r->last->end[j] == '\0' &&
2203: (buf->buf[i] == '\0' ||
2204: buf->buf[i] == ' ' ||
2205: buf->buf[i] == '\t')) {
1.2 schwarze 2206: roffnode_pop(r);
2207: roffnode_cleanscope(r);
1.1 schwarze 2208:
1.110 schwarze 2209: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 2210: i++;
2211:
2212: pos = i;
1.110 schwarze 2213: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 2214: TOKEN_NONE)
1.149 schwarze 2215: return ROFF_RERUN;
2216: return ROFF_IGN;
1.2 schwarze 2217: }
1.1 schwarze 2218: }
2219:
1.2 schwarze 2220: /*
2221: * If we have no custom end-query or lookup failed, then try
2222: * pulling it out of the hashtable.
2223: */
1.1 schwarze 2224:
1.110 schwarze 2225: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 2226:
1.110 schwarze 2227: if (t != ROFF_cblock) {
2228: if (tok != ROFF_ig)
2229: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 2230: return ROFF_IGN;
1.16 schwarze 2231: }
1.1 schwarze 2232:
1.149 schwarze 2233: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 2234: }
2235:
1.212 schwarze 2236: static int
1.2 schwarze 2237: roff_block_text(ROFF_ARGS)
2238: {
2239:
1.110 schwarze 2240: if (tok != ROFF_ig)
2241: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 2242:
1.149 schwarze 2243: return ROFF_IGN;
1.2 schwarze 2244: }
2245:
1.212 schwarze 2246: static int
1.2 schwarze 2247: roff_cond_sub(ROFF_ARGS)
2248: {
1.236 schwarze 2249: struct roffnode *bl;
1.212 schwarze 2250: char *ep;
2251: int endloop, irc, rr;
1.166 schwarze 2252: enum roff_tok t;
1.2 schwarze 2253:
1.212 schwarze 2254: irc = ROFF_IGN;
1.2 schwarze 2255: rr = r->last->rule;
1.212 schwarze 2256: endloop = tok != ROFF_while ? ROFF_IGN :
2257: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2258: if (roffnode_cleanscope(r))
2259: irc |= endloop;
1.39 schwarze 2260:
1.69 schwarze 2261: /*
2262: * If `\}' occurs on a macro line without a preceding macro,
2263: * drop the line completely.
2264: */
2265:
1.110 schwarze 2266: ep = buf->buf + pos;
2267: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 2268: rr = 0;
1.69 schwarze 2269:
1.215 schwarze 2270: /*
2271: * The closing delimiter `\}' rewinds the conditional scope
2272: * but is otherwise ignored when interpreting the line.
2273: */
1.39 schwarze 2274:
1.110 schwarze 2275: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 2276: switch (ep[1]) {
2277: case '}':
2278: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.212 schwarze 2279: if (roff_ccond(r, ln, ep - buf->buf))
2280: irc |= endloop;
1.190 schwarze 2281: break;
2282: case '\0':
2283: ++ep;
2284: break;
2285: default:
2286: ep += 2;
2287: break;
1.70 schwarze 2288: }
1.50 schwarze 2289: }
1.190 schwarze 2290:
2291: /*
2292: * Fully handle known macros when they are structurally
2293: * required or when the conditional evaluated to true.
2294: */
2295:
2296: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.236 schwarze 2297: if (t == ROFF_break) {
2298: if (irc & ROFF_LOOPMASK)
2299: irc = ROFF_IGN | ROFF_LOOPEXIT;
2300: else if (rr) {
2301: for (bl = r->last; bl != NULL; bl = bl->parent) {
2302: bl->rule = 0;
2303: if (bl->tok == ROFF_while)
2304: break;
2305: }
2306: }
2307: } else if (t != TOKEN_NONE &&
2308: (rr || roffs[t].flags & ROFFMAC_STRUCT))
2309: irc |= (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
2310: else
2311: irc |= rr ? ROFF_CONT : ROFF_IGN;
1.212 schwarze 2312: return irc;
1.2 schwarze 2313: }
2314:
1.212 schwarze 2315: static int
1.2 schwarze 2316: roff_cond_text(ROFF_ARGS)
2317: {
1.37 schwarze 2318: char *ep;
1.212 schwarze 2319: int endloop, irc, rr;
1.2 schwarze 2320:
1.212 schwarze 2321: irc = ROFF_IGN;
1.2 schwarze 2322: rr = r->last->rule;
1.212 schwarze 2323: endloop = tok != ROFF_while ? ROFF_IGN :
2324: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2325: if (roffnode_cleanscope(r))
2326: irc |= endloop;
1.1 schwarze 2327:
1.215 schwarze 2328: /*
2329: * If `\}' occurs on a text line with neither preceding
2330: * nor following characters, drop the line completely.
2331: */
2332:
1.110 schwarze 2333: ep = buf->buf + pos;
1.215 schwarze 2334: if (strcmp(ep, "\\}") == 0)
2335: rr = 0;
2336:
2337: /*
2338: * The closing delimiter `\}' rewinds the conditional scope
2339: * but is otherwise ignored when interpreting the line.
2340: */
2341:
1.110 schwarze 2342: while ((ep = strchr(ep, '\\')) != NULL) {
1.215 schwarze 2343: switch (ep[1]) {
2344: case '}':
2345: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2346: if (roff_ccond(r, ln, ep - buf->buf))
1.212 schwarze 2347: irc |= endloop;
1.215 schwarze 2348: break;
2349: case '\0':
2350: ++ep;
2351: break;
2352: default:
2353: ep += 2;
2354: break;
1.70 schwarze 2355: }
1.2 schwarze 2356: }
1.212 schwarze 2357: if (rr)
2358: irc |= ROFF_CONT;
2359: return irc;
1.2 schwarze 2360: }
2361:
1.138 schwarze 2362: /* --- handling of numeric and conditional expressions -------------------- */
2363:
1.77 schwarze 2364: /*
2365: * Parse a single signed integer number. Stop at the first non-digit.
2366: * If there is at least one digit, return success and advance the
2367: * parse point, else return failure and let the parse point unchanged.
2368: * Ignore overflows, treat them just like the C language.
2369: */
1.56 schwarze 2370: static int
1.133 schwarze 2371: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2372: {
1.133 schwarze 2373: int myres, scaled, n, p;
1.79 schwarze 2374:
2375: if (NULL == res)
2376: res = &myres;
1.56 schwarze 2377:
2378: p = *pos;
2379: n = v[p] == '-';
1.133 schwarze 2380: if (n || v[p] == '+')
1.56 schwarze 2381: p++;
2382:
1.133 schwarze 2383: if (flags & ROFFNUM_WHITE)
2384: while (isspace((unsigned char)v[p]))
2385: p++;
2386:
1.56 schwarze 2387: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2388: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2389: if (p == *pos + n)
2390: return 0;
2391:
2392: if (n)
2393: *res = -*res;
2394:
1.126 schwarze 2395: /* Each number may be followed by one optional scaling unit. */
2396:
2397: switch (v[p]) {
2398: case 'f':
1.133 schwarze 2399: scaled = *res * 65536;
1.126 schwarze 2400: break;
2401: case 'i':
1.133 schwarze 2402: scaled = *res * 240;
1.126 schwarze 2403: break;
2404: case 'c':
1.133 schwarze 2405: scaled = *res * 240 / 2.54;
1.126 schwarze 2406: break;
2407: case 'v':
2408: case 'P':
1.133 schwarze 2409: scaled = *res * 40;
1.126 schwarze 2410: break;
2411: case 'm':
2412: case 'n':
1.133 schwarze 2413: scaled = *res * 24;
1.126 schwarze 2414: break;
2415: case 'p':
1.133 schwarze 2416: scaled = *res * 10 / 3;
1.126 schwarze 2417: break;
2418: case 'u':
1.133 schwarze 2419: scaled = *res;
1.126 schwarze 2420: break;
2421: case 'M':
1.133 schwarze 2422: scaled = *res * 6 / 25;
1.126 schwarze 2423: break;
2424: default:
1.133 schwarze 2425: scaled = *res;
1.126 schwarze 2426: p--;
2427: break;
2428: }
1.133 schwarze 2429: if (flags & ROFFNUM_SCALE)
2430: *res = scaled;
1.126 schwarze 2431:
2432: *pos = p + 1;
1.149 schwarze 2433: return 1;
1.56 schwarze 2434: }
2435:
1.71 schwarze 2436: /*
2437: * Evaluate a string comparison condition.
2438: * The first character is the delimiter.
2439: * Succeed if the string up to its second occurrence
2440: * matches the string up to its third occurence.
2441: * Advance the cursor after the third occurrence
2442: * or lacking that, to the end of the line.
2443: */
2444: static int
2445: roff_evalstrcond(const char *v, int *pos)
2446: {
2447: const char *s1, *s2, *s3;
2448: int match;
2449:
2450: match = 0;
2451: s1 = v + *pos; /* initial delimiter */
2452: s2 = s1 + 1; /* for scanning the first string */
2453: s3 = strchr(s2, *s1); /* for scanning the second string */
2454:
2455: if (NULL == s3) /* found no middle delimiter */
2456: goto out;
2457:
2458: while ('\0' != *++s3) {
2459: if (*s2 != *s3) { /* mismatch */
2460: s3 = strchr(s3, *s1);
2461: break;
2462: }
2463: if (*s3 == *s1) { /* found the final delimiter */
2464: match = 1;
2465: break;
2466: }
2467: s2++;
2468: }
2469:
2470: out:
2471: if (NULL == s3)
2472: s3 = strchr(s2, '\0');
1.114 schwarze 2473: else if (*s3 != '\0')
1.71 schwarze 2474: s3++;
2475: *pos = s3 - v;
1.149 schwarze 2476: return match;
1.71 schwarze 2477: }
2478:
1.77 schwarze 2479: /*
2480: * Evaluate an optionally negated single character, numerical,
2481: * or string condition.
2482: */
1.71 schwarze 2483: static int
1.143 schwarze 2484: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2485: {
1.208 schwarze 2486: const char *start, *end;
2487: char *cp, *name;
2488: size_t sz;
2489: int deftype, len, number, savepos, istrue, wanttrue;
1.5 schwarze 2490:
1.71 schwarze 2491: if ('!' == v[*pos]) {
2492: wanttrue = 0;
2493: (*pos)++;
2494: } else
2495: wanttrue = 1;
2496:
1.5 schwarze 2497: switch (v[*pos]) {
1.112 schwarze 2498: case '\0':
1.149 schwarze 2499: return 0;
1.80 schwarze 2500: case 'n':
2501: case 'o':
1.5 schwarze 2502: (*pos)++;
1.149 schwarze 2503: return wanttrue;
1.80 schwarze 2504: case 'e':
2505: case 't':
1.111 schwarze 2506: case 'v':
1.5 schwarze 2507: (*pos)++;
1.149 schwarze 2508: return !wanttrue;
1.208 schwarze 2509: case 'c':
2510: do {
2511: (*pos)++;
2512: } while (v[*pos] == ' ');
2513:
2514: /*
2515: * Quirk for groff compatibility:
2516: * The horizontal tab is neither available nor unavailable.
2517: */
2518:
2519: if (v[*pos] == '\t') {
2520: (*pos)++;
2521: return 0;
2522: }
2523:
2524: /* Printable ASCII characters are available. */
2525:
2526: if (v[*pos] != '\\') {
2527: (*pos)++;
2528: return wanttrue;
2529: }
2530:
2531: end = v + ++*pos;
2532: switch (mandoc_escape(&end, &start, &len)) {
2533: case ESCAPE_SPECIAL:
2534: istrue = mchars_spec2cp(start, len) != -1;
2535: break;
2536: case ESCAPE_UNICODE:
2537: istrue = 1;
2538: break;
2539: case ESCAPE_NUMBERED:
2540: istrue = mchars_num2char(start, len) != -1;
2541: break;
2542: default:
2543: istrue = !wanttrue;
2544: break;
2545: }
2546: *pos = end - v;
2547: return istrue == wanttrue;
1.182 schwarze 2548: case 'd':
1.143 schwarze 2549: case 'r':
1.182 schwarze 2550: cp = v + *pos + 1;
2551: while (*cp == ' ')
2552: cp++;
2553: name = cp;
2554: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2555: if (sz == 0)
2556: istrue = 0;
2557: else if (v[*pos] == 'r')
2558: istrue = roff_hasregn(r, name, sz);
2559: else {
2560: deftype = ROFFDEF_ANY;
2561: roff_getstrn(r, name, sz, &deftype);
2562: istrue = !!deftype;
2563: }
1.235 schwarze 2564: *pos = (name + sz) - v;
1.182 schwarze 2565: return istrue == wanttrue;
1.5 schwarze 2566: default:
2567: break;
2568: }
2569:
1.113 schwarze 2570: savepos = *pos;
1.133 schwarze 2571: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2572: return (number > 0) == wanttrue;
1.113 schwarze 2573: else if (*pos == savepos)
1.149 schwarze 2574: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2575: else
1.149 schwarze 2576: return 0;
1.5 schwarze 2577: }
2578:
1.212 schwarze 2579: static int
1.21 schwarze 2580: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2581: {
1.30 schwarze 2582:
1.149 schwarze 2583: return ROFF_IGN;
1.21 schwarze 2584: }
2585:
1.212 schwarze 2586: static int
1.123 schwarze 2587: roff_insec(ROFF_ARGS)
2588: {
2589:
1.222 schwarze 2590: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2591: return ROFF_IGN;
1.123 schwarze 2592: }
2593:
1.212 schwarze 2594: static int
1.123 schwarze 2595: roff_unsupp(ROFF_ARGS)
2596: {
2597:
1.222 schwarze 2598: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2599: return ROFF_IGN;
1.123 schwarze 2600: }
2601:
1.212 schwarze 2602: static int
1.2 schwarze 2603: roff_cond(ROFF_ARGS)
2604: {
1.212 schwarze 2605: int irc;
1.46 schwarze 2606:
2607: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2608:
1.80 schwarze 2609: /*
1.35 schwarze 2610: * An `.el' has no conditional body: it will consume the value
2611: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2612: * defaults to DENY.
1.35 schwarze 2613: *
2614: * If we're not an `el', however, then evaluate the conditional.
2615: */
1.1 schwarze 2616:
1.110 schwarze 2617: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2618: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2619: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2620:
1.35 schwarze 2621: /*
2622: * An if-else will put the NEGATION of the current evaluated
2623: * conditional into the stack of rules.
2624: */
2625:
1.110 schwarze 2626: if (tok == ROFF_ie) {
1.96 schwarze 2627: if (r->rstackpos + 1 == r->rstacksz) {
2628: r->rstacksz += 16;
2629: r->rstack = mandoc_reallocarray(r->rstack,
2630: r->rstacksz, sizeof(int));
1.35 schwarze 2631: }
1.71 schwarze 2632: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2633: }
1.5 schwarze 2634:
2635: /* If the parent has false as its rule, then so do we. */
2636:
1.71 schwarze 2637: if (r->last->parent && !r->last->parent->rule)
2638: r->last->rule = 0;
1.5 schwarze 2639:
2640: /*
1.46 schwarze 2641: * Determine scope.
2642: * If there is nothing on the line after the conditional,
2643: * not even whitespace, use next-line scope.
1.212 schwarze 2644: * Except that .while does not support next-line scope.
1.5 schwarze 2645: */
1.2 schwarze 2646:
1.212 schwarze 2647: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.46 schwarze 2648: r->last->endspan = 2;
2649: goto out;
2650: }
2651:
1.110 schwarze 2652: while (buf->buf[pos] == ' ')
1.46 schwarze 2653: pos++;
2654:
2655: /* An opening brace requests multiline scope. */
1.2 schwarze 2656:
1.110 schwarze 2657: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2658: r->last->endspan = -1;
2659: pos += 2;
1.144 schwarze 2660: while (buf->buf[pos] == ' ')
2661: pos++;
1.46 schwarze 2662: goto out;
1.80 schwarze 2663: }
1.2 schwarze 2664:
2665: /*
1.46 schwarze 2666: * Anything else following the conditional causes
2667: * single-line scope. Warn if the scope contains
2668: * nothing but trailing whitespace.
1.2 schwarze 2669: */
2670:
1.110 schwarze 2671: if (buf->buf[pos] == '\0')
1.222 schwarze 2672: mandoc_msg(MANDOCERR_COND_EMPTY,
2673: ln, ppos, "%s", roff_name[tok]);
1.2 schwarze 2674:
1.46 schwarze 2675: r->last->endspan = 1;
1.1 schwarze 2676:
1.46 schwarze 2677: out:
1.2 schwarze 2678: *offs = pos;
1.212 schwarze 2679: irc = ROFF_RERUN;
2680: if (tok == ROFF_while)
2681: irc |= ROFF_WHILE;
2682: return irc;
1.1 schwarze 2683: }
2684:
1.212 schwarze 2685: static int
1.7 schwarze 2686: roff_ds(ROFF_ARGS)
2687: {
1.85 schwarze 2688: char *string;
2689: const char *name;
2690: size_t namesz;
1.10 schwarze 2691:
1.123 schwarze 2692: /* Ignore groff compatibility mode for now. */
2693:
2694: if (tok == ROFF_ds1)
2695: tok = ROFF_ds;
2696: else if (tok == ROFF_as1)
2697: tok = ROFF_as;
2698:
1.10 schwarze 2699: /*
1.85 schwarze 2700: * The first word is the name of the string.
2701: * If it is empty or terminated by an escape sequence,
2702: * abort the `ds' request without defining anything.
1.10 schwarze 2703: */
1.7 schwarze 2704:
1.110 schwarze 2705: name = string = buf->buf + pos;
2706: if (*name == '\0')
1.149 schwarze 2707: return ROFF_IGN;
1.7 schwarze 2708:
1.85 schwarze 2709: namesz = roff_getname(r, &string, ln, pos);
1.235 schwarze 2710: switch (name[namesz]) {
2711: case '\\':
1.149 schwarze 2712: return ROFF_IGN;
1.235 schwarze 2713: case '\t':
2714: string = buf->buf + pos + namesz;
2715: break;
2716: default:
2717: break;
2718: }
1.85 schwarze 2719:
2720: /* Read past the initial double-quote, if any. */
1.110 schwarze 2721: if (*string == '"')
1.7 schwarze 2722: string++;
2723:
1.10 schwarze 2724: /* The rest is the value. */
1.85 schwarze 2725: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2726: ROFF_as == tok);
1.183 schwarze 2727: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2728: return ROFF_IGN;
1.7 schwarze 2729: }
2730:
1.77 schwarze 2731: /*
2732: * Parse a single operator, one or two characters long.
2733: * If the operator is recognized, return success and advance the
2734: * parse point, else return failure and let the parse point unchanged.
2735: */
2736: static int
2737: roff_getop(const char *v, int *pos, char *res)
2738: {
2739:
2740: *res = v[*pos];
2741:
2742: switch (*res) {
1.80 schwarze 2743: case '+':
2744: case '-':
2745: case '*':
2746: case '/':
2747: case '%':
2748: case '&':
2749: case ':':
1.77 schwarze 2750: break;
2751: case '<':
2752: switch (v[*pos + 1]) {
1.80 schwarze 2753: case '=':
1.77 schwarze 2754: *res = 'l';
2755: (*pos)++;
2756: break;
1.80 schwarze 2757: case '>':
1.77 schwarze 2758: *res = '!';
2759: (*pos)++;
2760: break;
1.80 schwarze 2761: case '?':
1.77 schwarze 2762: *res = 'i';
2763: (*pos)++;
2764: break;
2765: default:
2766: break;
2767: }
2768: break;
2769: case '>':
2770: switch (v[*pos + 1]) {
1.80 schwarze 2771: case '=':
1.77 schwarze 2772: *res = 'g';
2773: (*pos)++;
2774: break;
1.80 schwarze 2775: case '?':
1.77 schwarze 2776: *res = 'a';
2777: (*pos)++;
2778: break;
2779: default:
2780: break;
2781: }
2782: break;
2783: case '=':
2784: if ('=' == v[*pos + 1])
2785: (*pos)++;
2786: break;
2787: default:
1.149 schwarze 2788: return 0;
1.77 schwarze 2789: }
2790: (*pos)++;
2791:
1.149 schwarze 2792: return *res;
1.77 schwarze 2793: }
2794:
2795: /*
2796: * Evaluate either a parenthesized numeric expression
2797: * or a single signed integer number.
2798: */
2799: static int
1.106 schwarze 2800: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2801: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2802: {
2803:
2804: if ('(' != v[*pos])
1.149 schwarze 2805: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2806:
2807: (*pos)++;
1.133 schwarze 2808: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2809: return 0;
1.77 schwarze 2810:
1.79 schwarze 2811: /*
2812: * Omission of the closing parenthesis
2813: * is an error in validation mode,
2814: * but ignored in evaluation mode.
2815: */
2816:
1.77 schwarze 2817: if (')' == v[*pos])
2818: (*pos)++;
1.79 schwarze 2819: else if (NULL == res)
1.149 schwarze 2820: return 0;
1.77 schwarze 2821:
1.149 schwarze 2822: return 1;
1.77 schwarze 2823: }
2824:
2825: /*
2826: * Evaluate a complete numeric expression.
2827: * Proceed left to right, there is no concept of precedence.
2828: */
2829: static int
1.106 schwarze 2830: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2831: int *pos, int *res, int flags)
1.77 schwarze 2832: {
2833: int mypos, operand2;
2834: char operator;
2835:
2836: if (NULL == pos) {
2837: mypos = 0;
2838: pos = &mypos;
2839: }
2840:
1.133 schwarze 2841: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2842: while (isspace((unsigned char)v[*pos]))
2843: (*pos)++;
2844:
1.133 schwarze 2845: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2846: return 0;
1.77 schwarze 2847:
2848: while (1) {
1.133 schwarze 2849: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2850: while (isspace((unsigned char)v[*pos]))
2851: (*pos)++;
2852:
2853: if ( ! roff_getop(v, pos, &operator))
2854: break;
2855:
1.133 schwarze 2856: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2857: while (isspace((unsigned char)v[*pos]))
2858: (*pos)++;
2859:
1.133 schwarze 2860: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2861: return 0;
1.77 schwarze 2862:
1.133 schwarze 2863: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2864: while (isspace((unsigned char)v[*pos]))
2865: (*pos)++;
1.79 schwarze 2866:
2867: if (NULL == res)
2868: continue;
1.77 schwarze 2869:
2870: switch (operator) {
1.80 schwarze 2871: case '+':
1.77 schwarze 2872: *res += operand2;
2873: break;
1.80 schwarze 2874: case '-':
1.77 schwarze 2875: *res -= operand2;
2876: break;
1.80 schwarze 2877: case '*':
1.77 schwarze 2878: *res *= operand2;
2879: break;
1.80 schwarze 2880: case '/':
1.116 schwarze 2881: if (operand2 == 0) {
1.106 schwarze 2882: mandoc_msg(MANDOCERR_DIVZERO,
1.222 schwarze 2883: ln, *pos, "%s", v);
1.106 schwarze 2884: *res = 0;
2885: break;
2886: }
1.77 schwarze 2887: *res /= operand2;
2888: break;
1.80 schwarze 2889: case '%':
1.116 schwarze 2890: if (operand2 == 0) {
2891: mandoc_msg(MANDOCERR_DIVZERO,
1.222 schwarze 2892: ln, *pos, "%s", v);
1.116 schwarze 2893: *res = 0;
2894: break;
2895: }
1.77 schwarze 2896: *res %= operand2;
2897: break;
1.80 schwarze 2898: case '<':
1.77 schwarze 2899: *res = *res < operand2;
2900: break;
1.80 schwarze 2901: case '>':
1.77 schwarze 2902: *res = *res > operand2;
2903: break;
1.80 schwarze 2904: case 'l':
1.77 schwarze 2905: *res = *res <= operand2;
2906: break;
1.80 schwarze 2907: case 'g':
1.77 schwarze 2908: *res = *res >= operand2;
2909: break;
1.80 schwarze 2910: case '=':
1.77 schwarze 2911: *res = *res == operand2;
2912: break;
1.80 schwarze 2913: case '!':
1.77 schwarze 2914: *res = *res != operand2;
2915: break;
1.80 schwarze 2916: case '&':
1.77 schwarze 2917: *res = *res && operand2;
2918: break;
1.80 schwarze 2919: case ':':
1.77 schwarze 2920: *res = *res || operand2;
2921: break;
1.80 schwarze 2922: case 'i':
1.77 schwarze 2923: if (operand2 < *res)
2924: *res = operand2;
2925: break;
1.80 schwarze 2926: case 'a':
1.77 schwarze 2927: if (operand2 > *res)
2928: *res = operand2;
2929: break;
2930: default:
2931: abort();
2932: }
2933: }
1.149 schwarze 2934: return 1;
1.77 schwarze 2935: }
2936:
1.138 schwarze 2937: /* --- register management ------------------------------------------------ */
2938:
1.52 schwarze 2939: void
1.60 schwarze 2940: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2941: {
1.199 schwarze 2942: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.198 schwarze 2943: }
2944:
2945: static void
2946: roff_setregn(struct roff *r, const char *name, size_t len,
1.199 schwarze 2947: int val, char sign, int step)
1.198 schwarze 2948: {
1.52 schwarze 2949: struct roffreg *reg;
2950:
2951: /* Search for an existing register with the same name. */
2952: reg = r->regtab;
2953:
1.198 schwarze 2954: while (reg != NULL && (reg->key.sz != len ||
2955: strncmp(reg->key.p, name, len) != 0))
1.52 schwarze 2956: reg = reg->next;
1.41 schwarze 2957:
1.52 schwarze 2958: if (NULL == reg) {
2959: /* Create a new register. */
2960: reg = mandoc_malloc(sizeof(struct roffreg));
1.198 schwarze 2961: reg->key.p = mandoc_strndup(name, len);
2962: reg->key.sz = len;
1.60 schwarze 2963: reg->val = 0;
1.199 schwarze 2964: reg->step = 0;
1.52 schwarze 2965: reg->next = r->regtab;
2966: r->regtab = reg;
2967: }
2968:
1.60 schwarze 2969: if ('+' == sign)
2970: reg->val += val;
2971: else if ('-' == sign)
2972: reg->val -= val;
2973: else
2974: reg->val = val;
1.199 schwarze 2975: if (step != INT_MIN)
2976: reg->step = step;
1.41 schwarze 2977: }
2978:
1.65 schwarze 2979: /*
2980: * Handle some predefined read-only number registers.
2981: * For now, return -1 if the requested register is not predefined;
2982: * in case a predefined read-only register having the value -1
2983: * were to turn up, another special value would have to be chosen.
2984: */
2985: static int
1.145 schwarze 2986: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2987: {
2988:
2989: switch (*name) {
1.145 schwarze 2990: case '$': /* Number of arguments of the last macro evaluated. */
1.211 schwarze 2991: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.80 schwarze 2992: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2993: return 0;
1.80 schwarze 2994: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2995: return 1;
1.80 schwarze 2996: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2997: return 24;
1.80 schwarze 2998: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2999: return 0;
1.80 schwarze 3000: case 'T': /* Some output device is always defined. */
1.149 schwarze 3001: return 1;
1.80 schwarze 3002: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 3003: return 40;
1.65 schwarze 3004: default:
1.149 schwarze 3005: return -1;
1.65 schwarze 3006: }
3007: }
3008:
1.53 schwarze 3009: int
1.198 schwarze 3010: roff_getreg(struct roff *r, const char *name)
1.41 schwarze 3011: {
1.199 schwarze 3012: return roff_getregn(r, name, strlen(name), '\0');
1.53 schwarze 3013: }
3014:
3015: static int
1.199 schwarze 3016: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.53 schwarze 3017: {
3018: struct roffreg *reg;
1.65 schwarze 3019: int val;
3020:
3021: if ('.' == name[0] && 2 == len) {
1.145 schwarze 3022: val = roff_getregro(r, name + 1);
1.65 schwarze 3023: if (-1 != val)
1.149 schwarze 3024: return val;
1.65 schwarze 3025: }
1.53 schwarze 3026:
1.199 schwarze 3027: for (reg = r->regtab; reg; reg = reg->next) {
1.53 schwarze 3028: if (len == reg->key.sz &&
1.199 schwarze 3029: 0 == strncmp(name, reg->key.p, len)) {
3030: switch (sign) {
3031: case '+':
3032: reg->val += reg->step;
3033: break;
3034: case '-':
3035: reg->val -= reg->step;
3036: break;
3037: default:
3038: break;
3039: }
1.149 schwarze 3040: return reg->val;
1.199 schwarze 3041: }
3042: }
1.143 schwarze 3043:
1.199 schwarze 3044: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.149 schwarze 3045: return 0;
1.143 schwarze 3046: }
3047:
3048: static int
3049: roff_hasregn(const struct roff *r, const char *name, size_t len)
3050: {
3051: struct roffreg *reg;
3052: int val;
3053:
3054: if ('.' == name[0] && 2 == len) {
1.145 schwarze 3055: val = roff_getregro(r, name + 1);
1.143 schwarze 3056: if (-1 != val)
1.149 schwarze 3057: return 1;
1.143 schwarze 3058: }
3059:
3060: for (reg = r->regtab; reg; reg = reg->next)
3061: if (len == reg->key.sz &&
3062: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 3063: return 1;
1.41 schwarze 3064:
1.149 schwarze 3065: return 0;
1.41 schwarze 3066: }
3067:
1.52 schwarze 3068: static void
3069: roff_freereg(struct roffreg *reg)
1.41 schwarze 3070: {
1.52 schwarze 3071: struct roffreg *old_reg;
1.41 schwarze 3072:
1.52 schwarze 3073: while (NULL != reg) {
3074: free(reg->key.p);
3075: old_reg = reg;
3076: reg = reg->next;
3077: free(old_reg);
3078: }
1.41 schwarze 3079: }
1.7 schwarze 3080:
1.212 schwarze 3081: static int
1.6 schwarze 3082: roff_nr(ROFF_ARGS)
1.1 schwarze 3083: {
1.199 schwarze 3084: char *key, *val, *step;
1.85 schwarze 3085: size_t keysz;
1.199 schwarze 3086: int iv, is, len;
1.60 schwarze 3087: char sign;
1.6 schwarze 3088:
1.110 schwarze 3089: key = val = buf->buf + pos;
3090: if (*key == '\0')
1.149 schwarze 3091: return ROFF_IGN;
1.85 schwarze 3092:
3093: keysz = roff_getname(r, &val, ln, pos);
1.235 schwarze 3094: if (key[keysz] == '\\' || key[keysz] == '\t')
1.149 schwarze 3095: return ROFF_IGN;
1.6 schwarze 3096:
1.60 schwarze 3097: sign = *val;
1.110 schwarze 3098: if (sign == '+' || sign == '-')
1.60 schwarze 3099: val++;
3100:
1.199 schwarze 3101: len = 0;
3102: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3103: return ROFF_IGN;
3104:
3105: step = val + len;
3106: while (isspace((unsigned char)*step))
3107: step++;
3108: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3109: is = INT_MIN;
1.1 schwarze 3110:
1.199 schwarze 3111: roff_setregn(r, key, keysz, iv, sign, is);
1.149 schwarze 3112: return ROFF_IGN;
1.76 schwarze 3113: }
3114:
1.212 schwarze 3115: static int
1.76 schwarze 3116: roff_rr(ROFF_ARGS)
3117: {
3118: struct roffreg *reg, **prev;
1.85 schwarze 3119: char *name, *cp;
3120: size_t namesz;
1.76 schwarze 3121:
1.110 schwarze 3122: name = cp = buf->buf + pos;
3123: if (*name == '\0')
1.149 schwarze 3124: return ROFF_IGN;
1.85 schwarze 3125: namesz = roff_getname(r, &cp, ln, pos);
3126: name[namesz] = '\0';
1.76 schwarze 3127:
3128: prev = &r->regtab;
3129: while (1) {
3130: reg = *prev;
1.110 schwarze 3131: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 3132: break;
3133: prev = ®->next;
3134: }
1.110 schwarze 3135: if (reg != NULL) {
1.76 schwarze 3136: *prev = reg->next;
3137: free(reg->key.p);
3138: free(reg);
3139: }
1.149 schwarze 3140: return ROFF_IGN;
1.29 schwarze 3141: }
3142:
1.138 schwarze 3143: /* --- handler functions for roff requests -------------------------------- */
3144:
1.212 schwarze 3145: static int
1.29 schwarze 3146: roff_rm(ROFF_ARGS)
3147: {
3148: const char *name;
3149: char *cp;
1.85 schwarze 3150: size_t namesz;
1.29 schwarze 3151:
1.110 schwarze 3152: cp = buf->buf + pos;
3153: while (*cp != '\0') {
1.85 schwarze 3154: name = cp;
1.110 schwarze 3155: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 3156: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 3157: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.235 schwarze 3158: if (name[namesz] == '\\' || name[namesz] == '\t')
1.85 schwarze 3159: break;
1.29 schwarze 3160: }
1.149 schwarze 3161: return ROFF_IGN;
1.51 schwarze 3162: }
3163:
1.212 schwarze 3164: static int
1.51 schwarze 3165: roff_it(ROFF_ARGS)
3166: {
3167: int iv;
3168:
3169: /* Parse the number of lines. */
1.133 schwarze 3170:
3171: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 3172: mandoc_msg(MANDOCERR_IT_NONUM,
3173: ln, ppos, "%s", buf->buf + 1);
1.149 schwarze 3174: return ROFF_IGN;
1.51 schwarze 3175: }
3176:
1.134 schwarze 3177: while (isspace((unsigned char)buf->buf[pos]))
3178: pos++;
3179:
3180: /*
3181: * Arm the input line trap.
3182: * Special-casing "an-trap" is an ugly workaround to cope
3183: * with DocBook stupidly fiddling with man(7) internals.
3184: */
1.133 schwarze 3185:
1.51 schwarze 3186: roffit_lines = iv;
1.134 schwarze 3187: roffit_macro = mandoc_strdup(iv != 1 ||
3188: strcmp(buf->buf + pos, "an-trap") ?
3189: buf->buf + pos : "br");
1.149 schwarze 3190: return ROFF_IGN;
1.47 schwarze 3191: }
3192:
1.212 schwarze 3193: static int
1.47 schwarze 3194: roff_Dd(ROFF_ARGS)
3195: {
1.187 schwarze 3196: int mask;
3197: enum roff_tok t, te;
1.99 schwarze 3198:
1.187 schwarze 3199: switch (tok) {
3200: case ROFF_Dd:
3201: tok = MDOC_Dd;
3202: te = MDOC_MAX;
3203: if (r->format == 0)
3204: r->format = MPARSE_MDOC;
3205: mask = MPARSE_MDOC | MPARSE_QUICK;
3206: break;
3207: case ROFF_TH:
3208: tok = MAN_TH;
3209: te = MAN_MAX;
3210: if (r->format == 0)
3211: r->format = MPARSE_MAN;
3212: mask = MPARSE_QUICK;
3213: break;
3214: default:
3215: abort();
3216: }
3217: if ((r->options & mask) == 0)
3218: for (t = tok; t < te; t++)
3219: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 3220: return ROFF_CONT;
1.14 schwarze 3221: }
3222:
1.212 schwarze 3223: static int
1.27 schwarze 3224: roff_TE(ROFF_ARGS)
3225: {
1.233 schwarze 3226: r->man->flags &= ~ROFF_NONOFILL;
1.193 schwarze 3227: if (r->tbl == NULL) {
1.222 schwarze 3228: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.193 schwarze 3229: return ROFF_IGN;
3230: }
1.218 schwarze 3231: if (tbl_end(r->tbl, 0) == 0) {
1.193 schwarze 3232: r->tbl = NULL;
1.130 schwarze 3233: free(buf->buf);
3234: buf->buf = mandoc_strdup(".sp");
3235: buf->sz = 4;
1.201 schwarze 3236: *offs = 0;
1.149 schwarze 3237: return ROFF_REPARSE;
1.130 schwarze 3238: }
1.193 schwarze 3239: r->tbl = NULL;
1.149 schwarze 3240: return ROFF_IGN;
1.27 schwarze 3241: }
3242:
1.212 schwarze 3243: static int
1.27 schwarze 3244: roff_T_(ROFF_ARGS)
3245: {
3246:
3247: if (NULL == r->tbl)
1.222 schwarze 3248: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.27 schwarze 3249: else
1.168 schwarze 3250: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 3251:
1.149 schwarze 3252: return ROFF_IGN;
1.27 schwarze 3253: }
3254:
1.102 schwarze 3255: /*
3256: * Handle in-line equation delimiters.
3257: */
1.212 schwarze 3258: static int
1.110 schwarze 3259: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 3260: {
1.105 schwarze 3261: char *cp1, *cp2;
3262: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 3263:
1.102 schwarze 3264: /*
3265: * Outside equations, look for an opening delimiter.
3266: * If we are inside an equation, we already know it is
3267: * in-line, or this function wouldn't have been called;
3268: * so look for a closing delimiter.
3269: */
3270:
1.110 schwarze 3271: cp1 = buf->buf + pos;
1.102 schwarze 3272: cp2 = strchr(cp1, r->eqn == NULL ?
3273: r->last_eqn->odelim : r->last_eqn->cdelim);
3274: if (cp2 == NULL)
1.149 schwarze 3275: return ROFF_CONT;
1.102 schwarze 3276:
1.105 schwarze 3277: *cp2++ = '\0';
3278: bef_pr = bef_nl = aft_nl = aft_pr = "";
3279:
3280: /* Handle preceding text, protecting whitespace. */
3281:
1.110 schwarze 3282: if (*buf->buf != '\0') {
1.105 schwarze 3283: if (r->eqn == NULL)
3284: bef_pr = "\\&";
3285: bef_nl = "\n";
3286: }
3287:
3288: /*
3289: * Prepare replacing the delimiter with an equation macro
3290: * and drop leading white space from the equation.
3291: */
1.102 schwarze 3292:
1.105 schwarze 3293: if (r->eqn == NULL) {
3294: while (*cp2 == ' ')
3295: cp2++;
3296: mac = ".EQ";
3297: } else
3298: mac = ".EN";
3299:
3300: /* Handle following text, protecting whitespace. */
3301:
3302: if (*cp2 != '\0') {
3303: aft_nl = "\n";
3304: if (r->eqn != NULL)
3305: aft_pr = "\\&";
3306: }
3307:
3308: /* Do the actual replacement. */
3309:
1.110 schwarze 3310: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 3311: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 3312: free(buf->buf);
3313: buf->buf = cp1;
1.102 schwarze 3314:
3315: /* Toggle the in-line state of the eqn subsystem. */
3316:
3317: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 3318: return ROFF_REPARSE;
1.41 schwarze 3319: }
3320:
1.212 schwarze 3321: static int
1.107 schwarze 3322: roff_EQ(ROFF_ARGS)
1.32 schwarze 3323: {
1.191 schwarze 3324: struct roff_node *n;
3325:
1.228 schwarze 3326: if (r->man->meta.macroset == MACROSET_MAN)
1.194 schwarze 3327: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 3328: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3329: if (ln > r->man->last->line)
3330: n->flags |= NODE_LINE;
1.220 schwarze 3331: n->eqn = eqn_box_new();
1.191 schwarze 3332: roff_node_append(r->man, n);
3333: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 3334:
1.110 schwarze 3335: assert(r->eqn == NULL);
1.191 schwarze 3336: if (r->last_eqn == NULL)
1.223 schwarze 3337: r->last_eqn = eqn_alloc();
1.191 schwarze 3338: else
3339: eqn_reset(r->last_eqn);
3340: r->eqn = r->last_eqn;
3341: r->eqn->node = n;
1.41 schwarze 3342:
1.110 schwarze 3343: if (buf->buf[pos] != '\0')
1.222 schwarze 3344: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 3345: ".EQ %s", buf->buf + pos);
1.41 schwarze 3346:
1.149 schwarze 3347: return ROFF_IGN;
1.32 schwarze 3348: }
3349:
1.212 schwarze 3350: static int
1.32 schwarze 3351: roff_EN(ROFF_ARGS)
3352: {
1.191 schwarze 3353: if (r->eqn != NULL) {
3354: eqn_parse(r->eqn);
3355: r->eqn = NULL;
3356: } else
1.222 schwarze 3357: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.191 schwarze 3358: if (buf->buf[pos] != '\0')
1.222 schwarze 3359: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.191 schwarze 3360: "EN %s", buf->buf + pos);
1.149 schwarze 3361: return ROFF_IGN;
1.32 schwarze 3362: }
3363:
1.212 schwarze 3364: static int
1.27 schwarze 3365: roff_TS(ROFF_ARGS)
3366: {
1.193 schwarze 3367: if (r->tbl != NULL) {
1.222 schwarze 3368: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.218 schwarze 3369: tbl_end(r->tbl, 0);
1.27 schwarze 3370: }
1.233 schwarze 3371: r->man->flags |= ROFF_NONOFILL;
1.223 schwarze 3372: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.218 schwarze 3373: if (r->last_tbl == NULL)
1.193 schwarze 3374: r->first_tbl = r->tbl;
3375: r->last_tbl = r->tbl;
1.169 schwarze 3376: return ROFF_IGN;
3377: }
3378:
1.212 schwarze 3379: static int
1.230 schwarze 3380: roff_noarg(ROFF_ARGS)
3381: {
3382: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3383: man_breakscope(r->man, tok);
3384: if (tok == ROFF_brp)
3385: tok = ROFF_br;
3386: roff_elem_alloc(r->man, ln, ppos, tok);
3387: if (buf->buf[pos] != '\0')
3388: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3389: "%s %s", roff_name[tok], buf->buf + pos);
3390: if (tok == ROFF_nf)
3391: r->man->flags |= ROFF_NOFILL;
3392: else if (tok == ROFF_fi)
3393: r->man->flags &= ~ROFF_NOFILL;
3394: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3395: r->man->next = ROFF_NEXT_SIBLING;
3396: return ROFF_IGN;
3397: }
3398:
3399: static int
1.169 schwarze 3400: roff_onearg(ROFF_ARGS)
3401: {
3402: struct roff_node *n;
3403: char *cp;
1.177 schwarze 3404: int npos;
1.169 schwarze 3405:
1.174 schwarze 3406: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 3407: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3408: tok == ROFF_ti))
1.174 schwarze 3409: man_breakscope(r->man, tok);
3410:
1.181 schwarze 3411: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 3412: r->man->last = roffce_node;
3413: r->man->next = ROFF_NEXT_SIBLING;
3414: }
3415:
1.169 schwarze 3416: roff_elem_alloc(r->man, ln, ppos, tok);
3417: n = r->man->last;
3418:
3419: cp = buf->buf + pos;
3420: if (*cp != '\0') {
3421: while (*cp != '\0' && *cp != ' ')
3422: cp++;
3423: while (*cp == ' ')
3424: *cp++ = '\0';
3425: if (*cp != '\0')
1.222 schwarze 3426: mandoc_msg(MANDOCERR_ARG_EXCESS,
3427: ln, (int)(cp - buf->buf),
1.169 schwarze 3428: "%s ... %s", roff_name[tok], cp);
3429: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 3430: }
3431:
1.181 schwarze 3432: if (tok == ROFF_ce || tok == ROFF_rj) {
3433: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 3434: roff_word_alloc(r->man, ln, pos, "1");
3435: r->man->last->flags |= NODE_NOSRC;
3436: }
3437: npos = 0;
3438: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3439: &roffce_lines, 0) == 0) {
1.222 schwarze 3440: mandoc_msg(MANDOCERR_CE_NONUM,
3441: ln, pos, "ce %s", buf->buf + pos);
1.177 schwarze 3442: roffce_lines = 1;
3443: }
3444: if (roffce_lines < 1) {
3445: r->man->last = r->man->last->parent;
3446: roffce_node = NULL;
3447: roffce_lines = 0;
3448: } else
3449: roffce_node = r->man->last->parent;
3450: } else {
3451: n->flags |= NODE_VALID | NODE_ENDED;
3452: r->man->last = n;
3453: }
3454: n->flags |= NODE_LINE;
1.172 schwarze 3455: r->man->next = ROFF_NEXT_SIBLING;
3456: return ROFF_IGN;
3457: }
3458:
1.212 schwarze 3459: static int
1.172 schwarze 3460: roff_manyarg(ROFF_ARGS)
3461: {
3462: struct roff_node *n;
3463: char *sp, *ep;
3464:
3465: roff_elem_alloc(r->man, ln, ppos, tok);
3466: n = r->man->last;
3467:
3468: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3469: while (*ep != '\0' && *ep != ' ')
3470: ep++;
3471: while (*ep == ' ')
3472: *ep++ = '\0';
3473: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3474: }
3475:
3476: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3477: r->man->last = n;
3478: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3479: return ROFF_IGN;
1.123 schwarze 3480: }
3481:
1.212 schwarze 3482: static int
1.183 schwarze 3483: roff_als(ROFF_ARGS)
3484: {
3485: char *oldn, *newn, *end, *value;
3486: size_t oldsz, newsz, valsz;
3487:
3488: newn = oldn = buf->buf + pos;
3489: if (*newn == '\0')
3490: return ROFF_IGN;
3491:
3492: newsz = roff_getname(r, &oldn, ln, pos);
1.235 schwarze 3493: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.183 schwarze 3494: return ROFF_IGN;
3495:
3496: end = oldn;
3497: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3498: if (oldsz == 0)
3499: return ROFF_IGN;
3500:
1.210 schwarze 3501: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.187 schwarze 3502: (int)oldsz, oldn);
1.183 schwarze 3503: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3504: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3505: free(value);
1.236 schwarze 3506: return ROFF_IGN;
3507: }
3508:
3509: /*
3510: * The .break request only makes sense inside conditionals,
3511: * and that case is already handled in roff_cond_sub().
3512: */
3513: static int
3514: roff_break(ROFF_ARGS)
3515: {
3516: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.168 schwarze 3517: return ROFF_IGN;
1.27 schwarze 3518: }
3519:
1.212 schwarze 3520: static int
1.48 schwarze 3521: roff_cc(ROFF_ARGS)
3522: {
3523: const char *p;
3524:
1.110 schwarze 3525: p = buf->buf + pos;
1.48 schwarze 3526:
1.110 schwarze 3527: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3528: r->control = '\0';
1.48 schwarze 3529:
1.110 schwarze 3530: if (*p != '\0')
1.222 schwarze 3531: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.132 schwarze 3532: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3533:
1.213 schwarze 3534: return ROFF_IGN;
3535: }
3536:
3537: static int
3538: roff_char(ROFF_ARGS)
3539: {
3540: const char *p, *kp, *vp;
3541: size_t ksz, vsz;
3542: int font;
3543:
3544: /* Parse the character to be replaced. */
3545:
3546: kp = buf->buf + pos;
3547: p = kp + 1;
3548: if (*kp == '\0' || (*kp == '\\' &&
3549: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3550: (*p != ' ' && *p != '\0')) {
1.222 schwarze 3551: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.213 schwarze 3552: return ROFF_IGN;
3553: }
3554: ksz = p - kp;
3555: while (*p == ' ')
3556: p++;
3557:
3558: /*
3559: * If the replacement string contains a font escape sequence,
3560: * we have to restore the font at the end.
3561: */
3562:
3563: vp = p;
3564: vsz = strlen(p);
3565: font = 0;
3566: while (*p != '\0') {
3567: if (*p++ != '\\')
3568: continue;
3569: switch (mandoc_escape(&p, NULL, NULL)) {
3570: case ESCAPE_FONT:
3571: case ESCAPE_FONTROMAN:
3572: case ESCAPE_FONTITALIC:
3573: case ESCAPE_FONTBOLD:
3574: case ESCAPE_FONTBI:
1.214 schwarze 3575: case ESCAPE_FONTCW:
1.213 schwarze 3576: case ESCAPE_FONTPREV:
3577: font++;
3578: break;
3579: default:
3580: break;
3581: }
3582: }
3583: if (font > 1)
1.222 schwarze 3584: mandoc_msg(MANDOCERR_CHAR_FONT,
3585: ln, (int)(vp - buf->buf), "%s", vp);
1.213 schwarze 3586:
3587: /*
3588: * Approximate the effect of .char using the .tr tables.
3589: * XXX In groff, .char and .tr interact differently.
3590: */
3591:
3592: if (ksz == 1) {
3593: if (r->xtab == NULL)
3594: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3595: assert((unsigned int)*kp < 128);
3596: free(r->xtab[(int)*kp].p);
3597: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3598: "%s%s", vp, font ? "\fP" : "");
3599: } else {
3600: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3601: if (font)
3602: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3603: }
1.149 schwarze 3604: return ROFF_IGN;
1.48 schwarze 3605: }
3606:
1.212 schwarze 3607: static int
1.175 schwarze 3608: roff_ec(ROFF_ARGS)
3609: {
3610: const char *p;
3611:
3612: p = buf->buf + pos;
3613: if (*p == '\0')
3614: r->escape = '\\';
3615: else {
3616: r->escape = *p;
3617: if (*++p != '\0')
1.222 schwarze 3618: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3619: (int)(p - buf->buf), "ec ... %s", p);
1.175 schwarze 3620: }
3621: return ROFF_IGN;
3622: }
3623:
1.212 schwarze 3624: static int
1.175 schwarze 3625: roff_eo(ROFF_ARGS)
3626: {
3627: r->escape = '\0';
3628: if (buf->buf[pos] != '\0')
1.222 schwarze 3629: mandoc_msg(MANDOCERR_ARG_SKIP,
1.175 schwarze 3630: ln, pos, "eo %s", buf->buf + pos);
3631: return ROFF_IGN;
1.202 schwarze 3632: }
3633:
1.212 schwarze 3634: static int
1.202 schwarze 3635: roff_nop(ROFF_ARGS)
3636: {
3637: while (buf->buf[pos] == ' ')
3638: pos++;
3639: *offs = pos;
3640: return ROFF_RERUN;
1.175 schwarze 3641: }
3642:
1.212 schwarze 3643: static int
1.42 schwarze 3644: roff_tr(ROFF_ARGS)
3645: {
3646: const char *p, *first, *second;
3647: size_t fsz, ssz;
3648: enum mandoc_esc esc;
3649:
1.110 schwarze 3650: p = buf->buf + pos;
1.42 schwarze 3651:
1.110 schwarze 3652: if (*p == '\0') {
1.222 schwarze 3653: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.149 schwarze 3654: return ROFF_IGN;
1.42 schwarze 3655: }
3656:
1.110 schwarze 3657: while (*p != '\0') {
1.42 schwarze 3658: fsz = ssz = 1;
3659:
3660: first = p++;
1.110 schwarze 3661: if (*first == '\\') {
1.42 schwarze 3662: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3663: if (esc == ESCAPE_ERROR) {
1.222 schwarze 3664: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3665: (int)(p - buf->buf), "%s", first);
1.149 schwarze 3666: return ROFF_IGN;
1.42 schwarze 3667: }
3668: fsz = (size_t)(p - first);
3669: }
3670:
3671: second = p++;
1.110 schwarze 3672: if (*second == '\\') {
1.42 schwarze 3673: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3674: if (esc == ESCAPE_ERROR) {
1.222 schwarze 3675: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3676: (int)(p - buf->buf), "%s", second);
1.149 schwarze 3677: return ROFF_IGN;
1.42 schwarze 3678: }
3679: ssz = (size_t)(p - second);
1.110 schwarze 3680: } else if (*second == '\0') {
1.222 schwarze 3681: mandoc_msg(MANDOCERR_TR_ODD, ln,
3682: (int)(first - buf->buf), "tr %s", first);
1.42 schwarze 3683: second = " ";
3684: p--;
3685: }
3686:
3687: if (fsz > 1) {
1.80 schwarze 3688: roff_setstrn(&r->xmbtab, first, fsz,
3689: second, ssz, 0);
1.42 schwarze 3690: continue;
3691: }
3692:
1.110 schwarze 3693: if (r->xtab == NULL)
1.80 schwarze 3694: r->xtab = mandoc_calloc(128,
3695: sizeof(struct roffstr));
1.42 schwarze 3696:
3697: free(r->xtab[(int)*first].p);
3698: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3699: r->xtab[(int)*first].sz = ssz;
3700: }
3701:
1.149 schwarze 3702: return ROFF_IGN;
1.42 schwarze 3703: }
3704:
1.211 schwarze 3705: /*
3706: * Implementation of the .return request.
3707: * There is no need to call roff_userret() from here.
3708: * The read module will call that after rewinding the reader stack
3709: * to the place from where the current macro was called.
3710: */
1.212 schwarze 3711: static int
1.211 schwarze 3712: roff_return(ROFF_ARGS)
3713: {
3714: if (r->mstackpos >= 0)
1.212 schwarze 3715: return ROFF_IGN | ROFF_USERRET;
1.211 schwarze 3716:
1.222 schwarze 3717: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.211 schwarze 3718: return ROFF_IGN;
3719: }
3720:
1.212 schwarze 3721: static int
1.178 schwarze 3722: roff_rn(ROFF_ARGS)
3723: {
3724: const char *value;
3725: char *oldn, *newn, *end;
3726: size_t oldsz, newsz;
1.187 schwarze 3727: int deftype;
1.178 schwarze 3728:
3729: oldn = newn = buf->buf + pos;
3730: if (*oldn == '\0')
3731: return ROFF_IGN;
3732:
3733: oldsz = roff_getname(r, &newn, ln, pos);
1.235 schwarze 3734: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.178 schwarze 3735: return ROFF_IGN;
3736:
3737: end = newn;
3738: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3739: if (newsz == 0)
3740: return ROFF_IGN;
3741:
1.187 schwarze 3742: deftype = ROFFDEF_ANY;
3743: value = roff_getstrn(r, oldn, oldsz, &deftype);
3744: switch (deftype) {
3745: case ROFFDEF_USER:
1.178 schwarze 3746: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3747: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3748: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3749: break;
3750: case ROFFDEF_PRE:
3751: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3752: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3753: break;
3754: case ROFFDEF_REN:
1.178 schwarze 3755: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3756: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3757: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3758: break;
3759: case ROFFDEF_STD:
1.178 schwarze 3760: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3761: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3762: break;
3763: default:
3764: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3765: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3766: break;
3767: }
1.178 schwarze 3768: return ROFF_IGN;
3769: }
3770:
1.212 schwarze 3771: static int
1.211 schwarze 3772: roff_shift(ROFF_ARGS)
3773: {
3774: struct mctx *ctx;
3775: int levels, i;
3776:
3777: levels = 1;
3778: if (buf->buf[pos] != '\0' &&
3779: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.222 schwarze 3780: mandoc_msg(MANDOCERR_CE_NONUM,
1.211 schwarze 3781: ln, pos, "shift %s", buf->buf + pos);
3782: levels = 1;
3783: }
3784: if (r->mstackpos < 0) {
1.222 schwarze 3785: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.211 schwarze 3786: return ROFF_IGN;
3787: }
3788: ctx = r->mstack + r->mstackpos;
3789: if (levels > ctx->argc) {
1.222 schwarze 3790: mandoc_msg(MANDOCERR_SHIFT,
1.211 schwarze 3791: ln, pos, "%d, but max is %d", levels, ctx->argc);
3792: levels = ctx->argc;
3793: }
3794: if (levels == 0)
3795: return ROFF_IGN;
3796: for (i = 0; i < levels; i++)
3797: free(ctx->argv[i]);
3798: ctx->argc -= levels;
3799: for (i = 0; i < ctx->argc; i++)
3800: ctx->argv[i] = ctx->argv[i + levels];
3801: return ROFF_IGN;
3802: }
3803:
1.212 schwarze 3804: static int
1.14 schwarze 3805: roff_so(ROFF_ARGS)
3806: {
1.121 schwarze 3807: char *name, *cp;
1.15 schwarze 3808:
1.110 schwarze 3809: name = buf->buf + pos;
1.222 schwarze 3810: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.14 schwarze 3811:
1.22 schwarze 3812: /*
3813: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3814: * opening anything that's not in our cwd or anything beneath
3815: * it. Thus, explicitly disallow traversing up the file-system
3816: * or using absolute paths.
3817: */
3818:
1.110 schwarze 3819: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.222 schwarze 3820: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.121 schwarze 3821: buf->sz = mandoc_asprintf(&cp,
3822: ".sp\nSee the file %s.\n.sp", name) + 1;
3823: free(buf->buf);
3824: buf->buf = cp;
3825: *offs = 0;
1.149 schwarze 3826: return ROFF_REPARSE;
1.14 schwarze 3827: }
3828:
3829: *offs = pos;
1.149 schwarze 3830: return ROFF_SO;
1.7 schwarze 3831: }
3832:
1.138 schwarze 3833: /* --- user defined strings and macros ------------------------------------ */
3834:
1.212 schwarze 3835: static int
1.16 schwarze 3836: roff_userdef(ROFF_ARGS)
1.12 schwarze 3837: {
1.211 schwarze 3838: struct mctx *ctx;
3839: char *arg, *ap, *dst, *src;
3840: size_t sz;
3841:
1.237 schwarze 3842: /* If the macro is empty, ignore it altogether. */
3843:
3844: if (*r->current_string == '\0')
3845: return ROFF_IGN;
3846:
1.211 schwarze 3847: /* Initialize a new macro stack context. */
3848:
3849: if (++r->mstackpos == r->mstacksz) {
3850: r->mstack = mandoc_recallocarray(r->mstack,
3851: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3852: r->mstacksz += 8;
3853: }
3854: ctx = r->mstack + r->mstackpos;
3855: ctx->argsz = 0;
3856: ctx->argc = 0;
3857: ctx->argv = NULL;
3858:
3859: /*
3860: * Collect pointers to macro argument strings,
3861: * NUL-terminating them and escaping quotes.
3862: */
3863:
3864: src = buf->buf + pos;
3865: while (*src != '\0') {
3866: if (ctx->argc == ctx->argsz) {
3867: ctx->argsz += 8;
3868: ctx->argv = mandoc_reallocarray(ctx->argv,
3869: ctx->argsz, sizeof(*ctx->argv));
3870: }
1.227 schwarze 3871: arg = roff_getarg(r, &src, ln, &pos);
1.211 schwarze 3872: sz = 1; /* For the terminating NUL. */
3873: for (ap = arg; *ap != '\0'; ap++)
3874: sz += *ap == '"' ? 4 : 1;
3875: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3876: for (ap = arg; *ap != '\0'; ap++) {
3877: if (*ap == '"') {
3878: memcpy(dst, "\\(dq", 4);
3879: dst += 4;
3880: } else
3881: *dst++ = *ap;
1.16 schwarze 3882: }
1.211 schwarze 3883: *dst = '\0';
1.227 schwarze 3884: free(arg);
1.209 schwarze 3885: }
3886:
1.211 schwarze 3887: /* Replace the macro invocation by the macro definition. */
1.135 schwarze 3888:
1.110 schwarze 3889: free(buf->buf);
1.211 schwarze 3890: buf->buf = mandoc_strdup(r->current_string);
3891: buf->sz = strlen(buf->buf) + 1;
1.120 schwarze 3892: *offs = 0;
1.16 schwarze 3893:
1.237 schwarze 3894: return buf->buf[buf->sz - 2] == '\n' ?
1.212 schwarze 3895: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.12 schwarze 3896: }
1.28 schwarze 3897:
1.178 schwarze 3898: /*
3899: * Calling a high-level macro that was renamed with .rn.
3900: * r->current_string has already been set up by roff_parse().
3901: */
1.212 schwarze 3902: static int
1.178 schwarze 3903: roff_renamed(ROFF_ARGS)
3904: {
3905: char *nbuf;
3906:
1.187 schwarze 3907: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3908: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3909: free(buf->buf);
3910: buf->buf = nbuf;
1.201 schwarze 3911: *offs = 0;
1.178 schwarze 3912: return ROFF_CONT;
3913: }
3914:
1.234 schwarze 3915: /*
3916: * Measure the length in bytes of the roff identifier at *cpp
3917: * and advance the pointer to the next word.
3918: */
1.85 schwarze 3919: static size_t
1.28 schwarze 3920: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3921: {
3922: char *name, *cp;
1.85 schwarze 3923: size_t namesz;
1.28 schwarze 3924:
3925: name = *cpp;
1.234 schwarze 3926: if (*name == '\0')
1.149 schwarze 3927: return 0;
1.28 schwarze 3928:
1.234 schwarze 3929: /* Advance cp to the byte after the end of the name. */
3930:
1.85 schwarze 3931: for (cp = name; 1; cp++) {
1.234 schwarze 3932: namesz = cp - name;
1.235 schwarze 3933: if (*cp == '\0')
1.85 schwarze 3934: break;
1.235 schwarze 3935: if (*cp == ' ' || *cp == '\t') {
3936: cp++;
3937: break;
3938: }
1.234 schwarze 3939: if (*cp != '\\')
1.28 schwarze 3940: continue;
1.234 schwarze 3941: if (cp[1] == '{' || cp[1] == '}')
1.88 schwarze 3942: break;
1.234 schwarze 3943: if (*++cp == '\\')
1.28 schwarze 3944: continue;
1.222 schwarze 3945: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.97 schwarze 3946: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3947: mandoc_escape((const char **)&cp, NULL, NULL);
3948: break;
1.28 schwarze 3949: }
3950:
3951: /* Read past spaces. */
1.234 schwarze 3952:
3953: while (*cp == ' ')
1.28 schwarze 3954: cp++;
3955:
3956: *cpp = cp;
1.149 schwarze 3957: return namesz;
1.28 schwarze 3958: }
3959:
1.16 schwarze 3960: /*
3961: * Store *string into the user-defined string called *name.
3962: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3963: * append == 0: replace mode
3964: * append == 1: single-line append mode
3965: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3966: */
1.8 schwarze 3967: static void
1.16 schwarze 3968: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3969: int append)
1.7 schwarze 3970: {
1.187 schwarze 3971: size_t namesz;
1.42 schwarze 3972:
1.187 schwarze 3973: namesz = strlen(name);
3974: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3975: string ? strlen(string) : 0, append);
1.187 schwarze 3976: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3977: }
3978:
3979: static void
3980: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3981: const char *string, size_t stringsz, int append)
1.42 schwarze 3982: {
3983: struct roffkv *n;
3984: char *c;
3985: int i;
3986: size_t oldch, newch;
1.7 schwarze 3987:
1.16 schwarze 3988: /* Search for an existing string with the same name. */
1.42 schwarze 3989: n = *r;
3990:
1.84 schwarze 3991: while (n && (namesz != n->key.sz ||
3992: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3993: n = n->next;
1.8 schwarze 3994:
3995: if (NULL == n) {
1.16 schwarze 3996: /* Create a new string table entry. */
1.42 schwarze 3997: n = mandoc_malloc(sizeof(struct roffkv));
3998: n->key.p = mandoc_strndup(name, namesz);
3999: n->key.sz = namesz;
4000: n->val.p = NULL;
4001: n->val.sz = 0;
4002: n->next = *r;
4003: *r = n;
1.66 schwarze 4004: } else if (0 == append) {
1.42 schwarze 4005: free(n->val.p);
4006: n->val.p = NULL;
4007: n->val.sz = 0;
1.16 schwarze 4008: }
4009:
4010: if (NULL == string)
4011: return;
4012:
4013: /*
4014: * One additional byte for the '\n' in multiline mode,
4015: * and one for the terminating '\0'.
4016: */
1.66 schwarze 4017: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 4018:
4019: if (NULL == n->val.p) {
4020: n->val.p = mandoc_malloc(newch);
4021: *n->val.p = '\0';
1.16 schwarze 4022: oldch = 0;
4023: } else {
1.42 schwarze 4024: oldch = n->val.sz;
4025: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 4026: }
4027:
4028: /* Skip existing content in the destination buffer. */
1.42 schwarze 4029: c = n->val.p + (int)oldch;
1.16 schwarze 4030:
4031: /* Append new content to the destination buffer. */
1.42 schwarze 4032: i = 0;
4033: while (i < (int)stringsz) {
1.16 schwarze 4034: /*
4035: * Rudimentary roff copy mode:
4036: * Handle escaped backslashes.
4037: */
1.42 schwarze 4038: if ('\\' == string[i] && '\\' == string[i + 1])
4039: i++;
4040: *c++ = string[i++];
1.16 schwarze 4041: }
1.8 schwarze 4042:
1.16 schwarze 4043: /* Append terminating bytes. */
1.66 schwarze 4044: if (1 < append)
1.16 schwarze 4045: *c++ = '\n';
1.42 schwarze 4046:
1.16 schwarze 4047: *c = '\0';
1.42 schwarze 4048: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 4049: }
4050:
1.8 schwarze 4051: static const char *
1.197 schwarze 4052: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 4053: int *deftype)
1.7 schwarze 4054: {
1.187 schwarze 4055: const struct roffkv *n;
1.197 schwarze 4056: int found, i;
1.187 schwarze 4057: enum roff_tok tok;
4058:
1.197 schwarze 4059: found = 0;
4060: for (n = r->strtab; n != NULL; n = n->next) {
4061: if (strncmp(name, n->key.p, len) != 0 ||
4062: n->key.p[len] != '\0' || n->val.p == NULL)
4063: continue;
4064: if (*deftype & ROFFDEF_USER) {
4065: *deftype = ROFFDEF_USER;
4066: return n->val.p;
4067: } else {
4068: found = 1;
4069: break;
4070: }
4071: }
4072: for (n = r->rentab; n != NULL; n = n->next) {
4073: if (strncmp(name, n->key.p, len) != 0 ||
4074: n->key.p[len] != '\0' || n->val.p == NULL)
4075: continue;
4076: if (*deftype & ROFFDEF_REN) {
4077: *deftype = ROFFDEF_REN;
4078: return n->val.p;
4079: } else {
4080: found = 1;
4081: break;
1.187 schwarze 4082: }
4083: }
1.197 schwarze 4084: for (i = 0; i < PREDEFS_MAX; i++) {
4085: if (strncmp(name, predefs[i].name, len) != 0 ||
4086: predefs[i].name[len] != '\0')
4087: continue;
4088: if (*deftype & ROFFDEF_PRE) {
4089: *deftype = ROFFDEF_PRE;
4090: return predefs[i].str;
4091: } else {
4092: found = 1;
4093: break;
1.187 schwarze 4094: }
4095: }
1.228 schwarze 4096: if (r->man->meta.macroset != MACROSET_MAN) {
1.197 schwarze 4097: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4098: if (strncmp(name, roff_name[tok], len) != 0 ||
4099: roff_name[tok][len] != '\0')
4100: continue;
4101: if (*deftype & ROFFDEF_STD) {
4102: *deftype = ROFFDEF_STD;
4103: return NULL;
4104: } else {
4105: found = 1;
4106: break;
1.187 schwarze 4107: }
4108: }
4109: }
1.228 schwarze 4110: if (r->man->meta.macroset != MACROSET_MDOC) {
1.197 schwarze 4111: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4112: if (strncmp(name, roff_name[tok], len) != 0 ||
4113: roff_name[tok][len] != '\0')
4114: continue;
4115: if (*deftype & ROFFDEF_STD) {
4116: *deftype = ROFFDEF_STD;
4117: return NULL;
4118: } else {
4119: found = 1;
4120: break;
1.187 schwarze 4121: }
4122: }
1.197 schwarze 4123: }
4124:
4125: if (found == 0 && *deftype != ROFFDEF_ANY) {
4126: if (*deftype & ROFFDEF_REN) {
4127: /*
4128: * This might still be a request,
4129: * so do not treat it as undefined yet.
4130: */
4131: *deftype = ROFFDEF_UNDEF;
4132: return NULL;
1.187 schwarze 4133: }
1.197 schwarze 4134:
4135: /* Using an undefined string defines it to be empty. */
4136:
4137: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4138: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 4139: }
1.197 schwarze 4140:
1.187 schwarze 4141: *deftype = 0;
1.149 schwarze 4142: return NULL;
1.7 schwarze 4143: }
4144:
1.8 schwarze 4145: static void
1.42 schwarze 4146: roff_freestr(struct roffkv *r)
1.7 schwarze 4147: {
1.42 schwarze 4148: struct roffkv *n, *nn;
1.7 schwarze 4149:
1.42 schwarze 4150: for (n = r; n; n = nn) {
4151: free(n->key.p);
4152: free(n->val.p);
1.7 schwarze 4153: nn = n->next;
4154: free(n);
4155: }
1.27 schwarze 4156: }
1.138 schwarze 4157:
4158: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 4159:
4160: /*
4161: * Duplicate an input string, making the appropriate character
4162: * conversations (as stipulated by `tr') along the way.
4163: * Returns a heap-allocated string with all the replacements made.
4164: */
4165: char *
4166: roff_strdup(const struct roff *r, const char *p)
4167: {
4168: const struct roffkv *cp;
4169: char *res;
4170: const char *pp;
4171: size_t ssz, sz;
4172: enum mandoc_esc esc;
4173:
4174: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 4175: return mandoc_strdup(p);
1.42 schwarze 4176: else if ('\0' == *p)
1.149 schwarze 4177: return mandoc_strdup("");
1.42 schwarze 4178:
4179: /*
4180: * Step through each character looking for term matches
4181: * (remember that a `tr' can be invoked with an escape, which is
4182: * a glyph but the escape is multi-character).
4183: * We only do this if the character hash has been initialised
4184: * and the string is >0 length.
4185: */
4186:
4187: res = NULL;
4188: ssz = 0;
4189:
4190: while ('\0' != *p) {
1.161 schwarze 4191: assert((unsigned int)*p < 128);
4192: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 4193: sz = r->xtab[(int)*p].sz;
4194: res = mandoc_realloc(res, ssz + sz + 1);
4195: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4196: ssz += sz;
4197: p++;
4198: continue;
4199: } else if ('\\' != *p) {
4200: res = mandoc_realloc(res, ssz + 2);
4201: res[ssz++] = *p++;
4202: continue;
4203: }
4204:
4205: /* Search for term matches. */
4206: for (cp = r->xmbtab; cp; cp = cp->next)
4207: if (0 == strncmp(p, cp->key.p, cp->key.sz))
4208: break;
4209:
4210: if (NULL != cp) {
4211: /*
4212: * A match has been found.
4213: * Append the match to the array and move
4214: * forward by its keysize.
4215: */
1.80 schwarze 4216: res = mandoc_realloc(res,
4217: ssz + cp->val.sz + 1);
1.42 schwarze 4218: memcpy(res + ssz, cp->val.p, cp->val.sz);
4219: ssz += cp->val.sz;
4220: p += (int)cp->key.sz;
4221: continue;
4222: }
4223:
4224: /*
4225: * Handle escapes carefully: we need to copy
4226: * over just the escape itself, or else we might
4227: * do replacements within the escape itself.
4228: * Make sure to pass along the bogus string.
4229: */
4230: pp = p++;
4231: esc = mandoc_escape(&p, NULL, NULL);
4232: if (ESCAPE_ERROR == esc) {
4233: sz = strlen(pp);
4234: res = mandoc_realloc(res, ssz + sz + 1);
4235: memcpy(res + ssz, pp, sz);
4236: break;
4237: }
1.80 schwarze 4238: /*
4239: * We bail out on bad escapes.
1.42 schwarze 4240: * No need to warn: we already did so when
1.227 schwarze 4241: * roff_expand() was called.
1.42 schwarze 4242: */
4243: sz = (int)(p - pp);
4244: res = mandoc_realloc(res, ssz + sz + 1);
4245: memcpy(res + ssz, pp, sz);
4246: ssz += sz;
4247: }
4248:
4249: res[(int)ssz] = '\0';
1.149 schwarze 4250: return res;
1.99 schwarze 4251: }
4252:
4253: int
4254: roff_getformat(const struct roff *r)
4255: {
4256:
1.149 schwarze 4257: return r->format;
1.48 schwarze 4258: }
4259:
4260: /*
1.80 schwarze 4261: * Find out whether a line is a macro line or not.
1.48 schwarze 4262: * If it is, adjust the current position and return one; if it isn't,
4263: * return zero and don't change the current position.
4264: * If the control character has been set with `.cc', then let that grain
4265: * precedence.
4266: * This is slighly contrary to groff, where using the non-breaking
4267: * control character when `cc' has been invoked will cause the
4268: * non-breaking macro contents to be printed verbatim.
4269: */
4270: int
4271: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4272: {
4273: int pos;
4274:
4275: pos = *ppos;
4276:
1.175 schwarze 4277: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 4278: pos++;
1.175 schwarze 4279: else if (r->control != '\0')
1.149 schwarze 4280: return 0;
1.48 schwarze 4281: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4282: pos += 2;
4283: else if ('.' == cp[pos] || '\'' == cp[pos])
4284: pos++;
4285: else
1.149 schwarze 4286: return 0;
1.48 schwarze 4287:
4288: while (' ' == cp[pos] || '\t' == cp[pos])
4289: pos++;
4290:
4291: *ppos = pos;
1.149 schwarze 4292: return 1;
1.1 schwarze 4293: }
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