Annotation of src/usr.bin/mandoc/roff.c, Revision 1.267
1.267 ! schwarze 1: /* $OpenBSD: roff.c,v 1.266 2022/06/07 09:41:22 schwarze Exp $ */
1.1 schwarze 2: /*
1.253 schwarze 3: * Copyright (c) 2010-2015, 2017-2022 Ingo Schwarze <schwarze@openbsd.org>
1.139 schwarze 4: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
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.
1.244 schwarze 17: *
18: * Implementation of the roff(7) parser for mandoc(1).
1.1 schwarze 19: */
1.99 schwarze 20: #include <sys/types.h>
21:
1.1 schwarze 22: #include <assert.h>
1.3 schwarze 23: #include <ctype.h>
1.117 schwarze 24: #include <limits.h>
1.167 schwarze 25: #include <stddef.h>
26: #include <stdint.h>
1.51 schwarze 27: #include <stdio.h>
1.1 schwarze 28: #include <stdlib.h>
29: #include <string.h>
30:
1.74 schwarze 31: #include "mandoc_aux.h"
1.167 schwarze 32: #include "mandoc_ohash.h"
1.217 schwarze 33: #include "mandoc.h"
1.137 schwarze 34: #include "roff.h"
1.221 schwarze 35: #include "mandoc_parse.h"
1.98 daniel 36: #include "libmandoc.h"
1.138 schwarze 37: #include "roff_int.h"
1.218 schwarze 38: #include "tbl_parse.h"
1.219 schwarze 39: #include "eqn_parse.h"
1.2 schwarze 40:
1.43 schwarze 41: /* Maximum number of string expansions per line, to break infinite loops. */
42: #define EXPAND_LIMIT 1000
43:
1.187 schwarze 44: /* Types of definitions of macros and strings. */
45: #define ROFFDEF_USER (1 << 1) /* User-defined. */
46: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
47: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
48: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
49: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
50: ROFFDEF_REN | ROFFDEF_STD)
1.197 schwarze 51: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.187 schwarze 52:
1.138 schwarze 53: /* --- data types --------------------------------------------------------- */
54:
1.41 schwarze 55: /*
1.42 schwarze 56: * An incredibly-simple string buffer.
57: */
1.8 schwarze 58: struct roffstr {
1.42 schwarze 59: char *p; /* nil-terminated buffer */
60: size_t sz; /* saved strlen(p) */
61: };
62:
63: /*
64: * A key-value roffstr pair as part of a singly-linked list.
65: */
66: struct roffkv {
67: struct roffstr key;
68: struct roffstr val;
69: struct roffkv *next; /* next in list */
1.8 schwarze 70: };
71:
1.52 schwarze 72: /*
73: * A single number register as part of a singly-linked list.
74: */
75: struct roffreg {
76: struct roffstr key;
1.53 schwarze 77: int val;
1.199 schwarze 78: int step;
1.52 schwarze 79: struct roffreg *next;
80: };
81:
1.167 schwarze 82: /*
83: * Association of request and macro names with token IDs.
84: */
85: struct roffreq {
86: enum roff_tok tok;
87: char name[];
88: };
89:
1.211 schwarze 90: /*
91: * A macro processing context.
92: * More than one is needed when macro calls are nested.
93: */
94: struct mctx {
95: char **argv;
96: int argc;
97: int argsz;
98: };
99:
1.1 schwarze 100: struct roff {
1.168 schwarze 101: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 102: struct roffnode *last; /* leaf of stack */
1.211 schwarze 103: struct mctx *mstack; /* stack of macro contexts */
1.96 schwarze 104: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 105: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 106: struct roffreg *regtab; /* number registers */
1.42 schwarze 107: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 108: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 109: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
110: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 111: const char *current_string; /* value of last called user macro */
1.27 schwarze 112: struct tbl_node *first_tbl; /* first table parsed */
113: struct tbl_node *last_tbl; /* last table parsed */
114: struct tbl_node *tbl; /* current table being parsed */
1.191 schwarze 115: struct eqn_node *last_eqn; /* equation parser */
116: struct eqn_node *eqn; /* active equation parser */
1.102 schwarze 117: int eqn_inline; /* current equation is inline */
1.96 schwarze 118: int options; /* parse options */
1.211 schwarze 119: int mstacksz; /* current size of mstack */
120: int mstackpos; /* position in mstack */
1.96 schwarze 121: int rstacksz; /* current size limit of rstack */
122: int rstackpos; /* position in rstack */
1.99 schwarze 123: int format; /* current file in mdoc or man format */
1.96 schwarze 124: char control; /* control character */
1.175 schwarze 125: char escape; /* escape character */
1.1 schwarze 126: };
127:
1.236 schwarze 128: /*
129: * A macro definition, condition, or ignored block.
130: */
1.1 schwarze 131: struct roffnode {
1.166 schwarze 132: enum roff_tok tok; /* type of node */
1.1 schwarze 133: struct roffnode *parent; /* up one in stack */
134: int line; /* parse line */
135: int col; /* parse col */
1.16 schwarze 136: char *name; /* node name, e.g. macro name */
1.236 schwarze 137: char *end; /* custom end macro of the block */
138: int endspan; /* scope to: 1=eol 2=next line -1=\} */
139: int rule; /* content is: 1=evaluated 0=skipped */
1.1 schwarze 140: };
141:
142: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 143: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 144: struct buf *buf, /* input buffer */ \
1.1 schwarze 145: int ln, /* parse line */ \
1.2 schwarze 146: int ppos, /* original pos in buffer */ \
147: int pos, /* current pos in buffer */ \
148: int *offs /* reset offset of buffer data */
1.1 schwarze 149:
1.212 schwarze 150: typedef int (*roffproc)(ROFF_ARGS);
1.1 schwarze 151:
152: struct roffmac {
1.2 schwarze 153: roffproc proc; /* process new macro */
154: roffproc text; /* process as child text of macro */
155: roffproc sub; /* process as child of macro */
156: int flags;
157: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 158: };
159:
1.37 schwarze 160: struct predef {
161: const char *name; /* predefined input name */
162: const char *str; /* replacement symbol */
163: };
164:
165: #define PREDEF(__name, __str) \
166: { (__name), (__str) },
167:
1.138 schwarze 168: /* --- function prototypes ------------------------------------------------ */
169:
1.212 schwarze 170: static int roffnode_cleanscope(struct roff *);
171: static int roffnode_pop(struct roff *);
1.166 schwarze 172: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 173: const char *, int, int);
1.218 schwarze 174: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.212 schwarze 175: static int roff_als(ROFF_ARGS);
176: static int roff_block(ROFF_ARGS);
177: static int roff_block_text(ROFF_ARGS);
178: static int roff_block_sub(ROFF_ARGS);
1.236 schwarze 179: static int roff_break(ROFF_ARGS);
1.212 schwarze 180: static int roff_cblock(ROFF_ARGS);
181: static int roff_cc(ROFF_ARGS);
182: static int roff_ccond(struct roff *, int, int);
1.213 schwarze 183: static int roff_char(ROFF_ARGS);
1.212 schwarze 184: static int roff_cond(ROFF_ARGS);
1.247 schwarze 185: static int roff_cond_checkend(ROFF_ARGS);
1.212 schwarze 186: static int roff_cond_text(ROFF_ARGS);
187: static int roff_cond_sub(ROFF_ARGS);
188: static int roff_ds(ROFF_ARGS);
189: static int roff_ec(ROFF_ARGS);
190: static int roff_eo(ROFF_ARGS);
191: static int roff_eqndelim(struct roff *, struct buf *, int);
1.244 schwarze 192: static int roff_evalcond(struct roff *, int, char *, int *);
1.106 schwarze 193: static int roff_evalnum(struct roff *, int,
194: const char *, int *, int *, int);
195: static int roff_evalpar(struct roff *, int,
1.133 schwarze 196: const char *, int *, int *, int);
1.71 schwarze 197: static int roff_evalstrcond(const char *, int *);
1.227 schwarze 198: static int roff_expand(struct roff *, struct buf *,
199: int, int, char);
1.260 schwarze 200: static void roff_expand_patch(struct buf *, int,
201: const char *, int);
1.42 schwarze 202: static void roff_free1(struct roff *);
1.52 schwarze 203: static void roff_freereg(struct roffreg *);
1.42 schwarze 204: static void roff_freestr(struct roffkv *);
1.85 schwarze 205: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 206: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 207: static int roff_getop(const char *, int *, char *);
1.199 schwarze 208: static int roff_getregn(struct roff *,
209: const char *, size_t, char);
1.145 schwarze 210: static int roff_getregro(const struct roff *,
211: const char *name);
1.197 schwarze 212: static const char *roff_getstrn(struct roff *,
1.187 schwarze 213: const char *, size_t, int *);
1.143 schwarze 214: static int roff_hasregn(const struct roff *,
215: const char *, size_t);
1.212 schwarze 216: static int roff_insec(ROFF_ARGS);
217: static int roff_it(ROFF_ARGS);
218: static int roff_line_ignore(ROFF_ARGS);
1.137 schwarze 219: static void roff_man_alloc1(struct roff_man *);
220: static void roff_man_free1(struct roff_man *);
1.212 schwarze 221: static int roff_manyarg(ROFF_ARGS);
1.256 schwarze 222: static int roff_mc(ROFF_ARGS);
1.230 schwarze 223: static int roff_noarg(ROFF_ARGS);
1.212 schwarze 224: static int roff_nop(ROFF_ARGS);
225: static int roff_nr(ROFF_ARGS);
226: static int roff_onearg(ROFF_ARGS);
1.166 schwarze 227: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 228: int, int);
1.259 schwarze 229: static int roff_parse_comment(struct roff *, struct buf *,
230: int, int, char);
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);
1.258 schwarze 234: static int roff_req_or_macro(ROFF_ARGS);
1.212 schwarze 235: static int roff_return(ROFF_ARGS);
236: static int roff_rm(ROFF_ARGS);
237: static int roff_rn(ROFF_ARGS);
238: static int roff_rr(ROFF_ARGS);
1.198 schwarze 239: static void roff_setregn(struct roff *, const char *,
1.199 schwarze 240: size_t, int, char, int);
1.8 schwarze 241: static void roff_setstr(struct roff *,
1.16 schwarze 242: const char *, const char *, int);
1.80 schwarze 243: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 244: size_t, const char *, size_t, int);
1.212 schwarze 245: static int roff_shift(ROFF_ARGS);
246: static int roff_so(ROFF_ARGS);
247: static int roff_tr(ROFF_ARGS);
248: static int roff_Dd(ROFF_ARGS);
249: static int roff_TE(ROFF_ARGS);
250: static int roff_TS(ROFF_ARGS);
251: static int roff_EQ(ROFF_ARGS);
252: static int roff_EN(ROFF_ARGS);
253: static int roff_T_(ROFF_ARGS);
254: static int roff_unsupp(ROFF_ARGS);
255: static int roff_userdef(ROFF_ARGS);
1.1 schwarze 256:
1.138 schwarze 257: /* --- constant data ------------------------------------------------------ */
258:
1.133 schwarze 259: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
260: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
261:
1.166 schwarze 262: const char *__roff_name[MAN_MAX + 1] = {
1.230 schwarze 263: "br", "ce", "fi", "ft",
264: "ll", "mc", "nf",
265: "po", "rj", "sp",
1.184 schwarze 266: "ta", "ti", NULL,
1.166 schwarze 267: "ab", "ad", "af", "aln",
268: "als", "am", "am1", "ami",
269: "ami1", "as", "as1", "asciify",
270: "backtrace", "bd", "bleedat", "blm",
271: "box", "boxa", "bp", "BP",
272: "break", "breakchar", "brnl", "brp",
1.177 schwarze 273: "brpnl", "c2", "cc",
1.166 schwarze 274: "cf", "cflags", "ch", "char",
275: "chop", "class", "close", "CL",
276: "color", "composite", "continue", "cp",
277: "cropat", "cs", "cu", "da",
278: "dch", "Dd", "de", "de1",
279: "defcolor", "dei", "dei1", "device",
280: "devicem", "di", "do", "ds",
281: "ds1", "dwh", "dt", "ec",
282: "ecr", "ecs", "el", "em",
283: "EN", "eo", "EP", "EQ",
284: "errprint", "ev", "evc", "ex",
285: "fallback", "fam", "fc", "fchar",
286: "fcolor", "fdeferlig", "feature", "fkern",
287: "fl", "flig", "fp", "fps",
288: "fschar", "fspacewidth", "fspecial", "ftr",
289: "fzoom", "gcolor", "hc", "hcode",
290: "hidechar", "hla", "hlm", "hpf",
291: "hpfa", "hpfcode", "hw", "hy",
292: "hylang", "hylen", "hym", "hypp",
293: "hys", "ie", "if", "ig",
294: "index", "it", "itc", "IX",
295: "kern", "kernafter", "kernbefore", "kernpair",
296: "lc", "lc_ctype", "lds", "length",
297: "letadj", "lf", "lg", "lhang",
298: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 299: "ls", "lsm", "lt",
1.166 schwarze 300: "mediasize", "minss", "mk", "mso",
301: "na", "ne", "nh", "nhychar",
302: "nm", "nn", "nop", "nr",
303: "nrf", "nroff", "ns", "nx",
304: "open", "opena", "os", "output",
305: "padj", "papersize", "pc", "pev",
306: "pi", "PI", "pl", "pm",
1.184 schwarze 307: "pn", "pnr", "ps",
1.166 schwarze 308: "psbb", "pshape", "pso", "ptr",
309: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 310: "return", "rfschar", "rhang",
1.166 schwarze 311: "rm", "rn", "rnn", "rr",
312: "rs", "rt", "schar", "sentchar",
313: "shc", "shift", "sizes", "so",
314: "spacewidth", "special", "spreadwarn", "ss",
315: "sty", "substring", "sv", "sy",
1.172 schwarze 316: "T&", "tc", "TE",
1.173 schwarze 317: "TH", "tkf", "tl",
1.166 schwarze 318: "tm", "tm1", "tmc", "tr",
319: "track", "transchar", "trf", "trimat",
320: "trin", "trnt", "troff", "TS",
321: "uf", "ul", "unformat", "unwatch",
322: "unwatchn", "vpt", "vs", "warn",
323: "warnscale", "watch", "watchlength", "watchn",
324: "wh", "while", "write", "writec",
325: "writem", "xflag", ".", NULL,
1.178 schwarze 326: NULL, "text",
1.166 schwarze 327: "Dd", "Dt", "Os", "Sh",
328: "Ss", "Pp", "D1", "Dl",
329: "Bd", "Ed", "Bl", "El",
330: "It", "Ad", "An", "Ap",
331: "Ar", "Cd", "Cm", "Dv",
332: "Er", "Ev", "Ex", "Fa",
333: "Fd", "Fl", "Fn", "Ft",
334: "Ic", "In", "Li", "Nd",
335: "Nm", "Op", "Ot", "Pa",
336: "Rv", "St", "Va", "Vt",
337: "Xr", "%A", "%B", "%D",
338: "%I", "%J", "%N", "%O",
339: "%P", "%R", "%T", "%V",
340: "Ac", "Ao", "Aq", "At",
341: "Bc", "Bf", "Bo", "Bq",
342: "Bsx", "Bx", "Db", "Dc",
343: "Do", "Dq", "Ec", "Ef",
344: "Em", "Eo", "Fx", "Ms",
345: "No", "Ns", "Nx", "Ox",
346: "Pc", "Pf", "Po", "Pq",
347: "Qc", "Ql", "Qo", "Qq",
348: "Re", "Rs", "Sc", "So",
349: "Sq", "Sm", "Sx", "Sy",
350: "Tn", "Ux", "Xc", "Xo",
351: "Fo", "Fc", "Oo", "Oc",
352: "Bk", "Ek", "Bt", "Hf",
353: "Fr", "Ud", "Lb", "Lp",
354: "Lk", "Mt", "Brq", "Bro",
355: "Brc", "%C", "Es", "En",
1.171 schwarze 356: "Dx", "%Q", "%U", "Ta",
1.241 schwarze 357: "Tg", NULL,
1.166 schwarze 358: "TH", "SH", "SS", "TP",
1.204 schwarze 359: "TQ",
1.166 schwarze 360: "LP", "PP", "P", "IP",
361: "HP", "SM", "SB", "BI",
362: "IB", "BR", "RB", "R",
363: "B", "I", "IR", "RI",
364: "RE", "RS", "DT", "UC",
1.169 schwarze 365: "PD", "AT", "in",
1.205 schwarze 366: "SY", "YS", "OP",
367: "EX", "EE", "UR",
1.189 bentley 368: "UE", "MT", "ME", NULL
1.166 schwarze 369: };
370: const char *const *roff_name = __roff_name;
371:
372: static struct roffmac roffs[TOKEN_NONE] = {
1.230 schwarze 373: { roff_noarg, NULL, NULL, 0 }, /* br */
1.177 schwarze 374: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.230 schwarze 375: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.169 schwarze 376: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 377: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.256 schwarze 378: { roff_mc, NULL, NULL, 0 }, /* mc */
1.230 schwarze 379: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.184 schwarze 380: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 381: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 382: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 383: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 384: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 385: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 386: { roff_unsupp, NULL, NULL, 0 }, /* ab */
387: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
388: { roff_line_ignore, NULL, NULL, 0 }, /* af */
389: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 390: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 391: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
392: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
393: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
394: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
395: { roff_ds, NULL, NULL, 0 }, /* as */
396: { roff_ds, NULL, NULL, 0 }, /* as1 */
397: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
398: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
399: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
400: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
401: { roff_unsupp, NULL, NULL, 0 }, /* blm */
402: { roff_unsupp, NULL, NULL, 0 }, /* box */
403: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
404: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
405: { roff_unsupp, NULL, NULL, 0 }, /* BP */
1.236 schwarze 406: { roff_break, NULL, NULL, 0 }, /* break */
1.167 schwarze 407: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
408: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.230 schwarze 409: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.167 schwarze 410: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
411: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
412: { roff_cc, NULL, NULL, 0 }, /* cc */
413: { roff_insec, NULL, NULL, 0 }, /* cf */
414: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
415: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.213 schwarze 416: { roff_char, NULL, NULL, 0 }, /* char */
1.167 schwarze 417: { roff_unsupp, NULL, NULL, 0 }, /* chop */
418: { roff_line_ignore, NULL, NULL, 0 }, /* class */
419: { roff_insec, NULL, NULL, 0 }, /* close */
420: { roff_unsupp, NULL, NULL, 0 }, /* CL */
421: { roff_line_ignore, NULL, NULL, 0 }, /* color */
422: { roff_unsupp, NULL, NULL, 0 }, /* composite */
423: { roff_unsupp, NULL, NULL, 0 }, /* continue */
424: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
425: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
426: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
427: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
428: { roff_unsupp, NULL, NULL, 0 }, /* da */
429: { roff_unsupp, NULL, NULL, 0 }, /* dch */
430: { roff_Dd, NULL, NULL, 0 }, /* Dd */
431: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
432: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
433: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
434: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
435: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
436: { roff_unsupp, NULL, NULL, 0 }, /* device */
437: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
438: { roff_unsupp, NULL, NULL, 0 }, /* di */
439: { roff_unsupp, NULL, NULL, 0 }, /* do */
440: { roff_ds, NULL, NULL, 0 }, /* ds */
441: { roff_ds, NULL, NULL, 0 }, /* ds1 */
442: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
443: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 444: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 445: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
446: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
447: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
448: { roff_unsupp, NULL, NULL, 0 }, /* em */
449: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 450: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 451: { roff_unsupp, NULL, NULL, 0 }, /* EP */
452: { roff_EQ, NULL, NULL, 0 }, /* EQ */
453: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
454: { roff_unsupp, NULL, NULL, 0 }, /* ev */
455: { roff_unsupp, NULL, NULL, 0 }, /* evc */
456: { roff_unsupp, NULL, NULL, 0 }, /* ex */
457: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
458: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
459: { roff_unsupp, NULL, NULL, 0 }, /* fc */
460: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
461: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
462: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
463: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
464: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
465: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
466: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
467: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
468: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
469: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
470: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
471: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
472: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
473: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
474: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
475: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
476: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
477: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
478: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
479: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
480: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
481: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
482: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
483: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
484: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
485: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
486: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
487: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
488: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
489: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
490: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
491: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
492: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
493: { roff_unsupp, NULL, NULL, 0 }, /* index */
494: { roff_it, NULL, NULL, 0 }, /* it */
495: { roff_unsupp, NULL, NULL, 0 }, /* itc */
496: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
497: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
498: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
499: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
500: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
501: { roff_unsupp, NULL, NULL, 0 }, /* lc */
502: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
503: { roff_unsupp, NULL, NULL, 0 }, /* lds */
504: { roff_unsupp, NULL, NULL, 0 }, /* length */
505: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
506: { roff_insec, NULL, NULL, 0 }, /* lf */
507: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
508: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
509: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
510: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
511: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
512: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
513: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
514: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
515: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
516: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
517: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
518: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
519: { roff_insec, NULL, NULL, 0 }, /* mso */
520: { roff_line_ignore, NULL, NULL, 0 }, /* na */
521: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
522: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
523: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
524: { roff_unsupp, NULL, NULL, 0 }, /* nm */
525: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.202 schwarze 526: { roff_nop, NULL, NULL, 0 }, /* nop */
1.167 schwarze 527: { roff_nr, NULL, NULL, 0 }, /* nr */
528: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
529: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
530: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
531: { roff_insec, NULL, NULL, 0 }, /* nx */
532: { roff_insec, NULL, NULL, 0 }, /* open */
533: { roff_insec, NULL, NULL, 0 }, /* opena */
534: { roff_line_ignore, NULL, NULL, 0 }, /* os */
535: { roff_unsupp, NULL, NULL, 0 }, /* output */
536: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
537: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
538: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
539: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
540: { roff_insec, NULL, NULL, 0 }, /* pi */
541: { roff_unsupp, NULL, NULL, 0 }, /* PI */
542: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
543: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
544: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
545: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
546: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
547: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
548: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
549: { roff_insec, NULL, NULL, 0 }, /* pso */
550: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
551: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
552: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
553: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
554: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.211 schwarze 555: { roff_return, NULL, NULL, 0 }, /* return */
1.167 schwarze 556: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
557: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
558: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 559: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 560: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
561: { roff_rr, NULL, NULL, 0 }, /* rr */
562: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
563: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
564: { roff_unsupp, NULL, NULL, 0 }, /* schar */
565: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
566: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.211 schwarze 567: { roff_shift, NULL, NULL, 0 }, /* shift */
1.167 schwarze 568: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
569: { roff_so, NULL, NULL, 0 }, /* so */
570: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
571: { roff_line_ignore, NULL, NULL, 0 }, /* special */
572: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
573: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
574: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
575: { roff_unsupp, NULL, NULL, 0 }, /* substring */
576: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
577: { roff_insec, NULL, NULL, 0 }, /* sy */
578: { roff_T_, NULL, NULL, 0 }, /* T& */
579: { roff_unsupp, NULL, NULL, 0 }, /* tc */
580: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 581: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 582: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
583: { roff_unsupp, NULL, NULL, 0 }, /* tl */
584: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
585: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
586: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
587: { roff_tr, NULL, NULL, 0 }, /* tr */
588: { roff_line_ignore, NULL, NULL, 0 }, /* track */
589: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
590: { roff_insec, NULL, NULL, 0 }, /* trf */
591: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
592: { roff_unsupp, NULL, NULL, 0 }, /* trin */
593: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
594: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
595: { roff_TS, NULL, NULL, 0 }, /* TS */
596: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
597: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
598: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
599: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
600: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
601: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
602: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
603: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
604: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
605: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
606: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
607: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
608: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.212 schwarze 609: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.167 schwarze 610: { roff_insec, NULL, NULL, 0 }, /* write */
611: { roff_insec, NULL, NULL, 0 }, /* writec */
612: { roff_insec, NULL, NULL, 0 }, /* writem */
613: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
614: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 615: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 616: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 617: };
618:
1.37 schwarze 619: /* Array of injected predefined strings. */
620: #define PREDEFS_MAX 38
621: static const struct predef predefs[PREDEFS_MAX] = {
622: #include "predefs.in"
623: };
624:
1.177 schwarze 625: static int roffce_lines; /* number of input lines to center */
626: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 627: static int roffit_lines; /* number of lines to delay */
628: static char *roffit_macro; /* nil-terminated macro line */
629:
1.80 schwarze 630:
1.138 schwarze 631: /* --- request table ------------------------------------------------------ */
632:
1.167 schwarze 633: struct ohash *
634: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 635: {
1.167 schwarze 636: struct ohash *htab;
637: struct roffreq *req;
638: enum roff_tok tok;
639: size_t sz;
640: unsigned int slot;
1.3 schwarze 641:
1.167 schwarze 642: htab = mandoc_malloc(sizeof(*htab));
643: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 644:
1.167 schwarze 645: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 646: if (roff_name[tok] == NULL)
647: continue;
1.167 schwarze 648: sz = strlen(roff_name[tok]);
649: req = mandoc_malloc(sizeof(*req) + sz + 1);
650: req->tok = tok;
651: memcpy(req->name, roff_name[tok], sz + 1);
652: slot = ohash_qlookup(htab, req->name);
653: ohash_insert(htab, slot, req);
1.3 schwarze 654: }
1.167 schwarze 655: return htab;
1.3 schwarze 656: }
657:
1.167 schwarze 658: void
659: roffhash_free(struct ohash *htab)
1.1 schwarze 660: {
1.167 schwarze 661: struct roffreq *req;
662: unsigned int slot;
1.1 schwarze 663:
1.167 schwarze 664: if (htab == NULL)
665: return;
666: for (req = ohash_first(htab, &slot); req != NULL;
667: req = ohash_next(htab, &slot))
668: free(req);
669: ohash_delete(htab);
670: free(htab);
671: }
672:
673: enum roff_tok
674: roffhash_find(struct ohash *htab, const char *name, size_t sz)
675: {
676: struct roffreq *req;
677: const char *end;
678:
679: if (sz) {
680: end = name + sz;
681: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
682: } else
683: req = ohash_find(htab, ohash_qlookup(htab, name));
684: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 685: }
686:
1.138 schwarze 687: /* --- stack of request blocks -------------------------------------------- */
688:
1.1 schwarze 689: /*
690: * Pop the current node off of the stack of roff instructions currently
1.236 schwarze 691: * pending. Return 1 if it is a loop or 0 otherwise.
1.1 schwarze 692: */
1.212 schwarze 693: static int
1.1 schwarze 694: roffnode_pop(struct roff *r)
695: {
696: struct roffnode *p;
1.212 schwarze 697: int inloop;
1.1 schwarze 698:
1.80 schwarze 699: p = r->last;
1.212 schwarze 700: inloop = p->tok == ROFF_while;
701: r->last = p->parent;
1.16 schwarze 702: free(p->name);
703: free(p->end);
1.1 schwarze 704: free(p);
1.212 schwarze 705: return inloop;
1.1 schwarze 706: }
707:
708: /*
709: * Push a roff node onto the instruction stack. This must later be
710: * removed with roffnode_pop().
711: */
1.11 schwarze 712: static void
1.166 schwarze 713: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 714: int line, int col)
1.1 schwarze 715: {
716: struct roffnode *p;
717:
1.11 schwarze 718: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 719: p->tok = tok;
1.16 schwarze 720: if (name)
721: p->name = mandoc_strdup(name);
1.1 schwarze 722: p->parent = r->last;
723: p->line = line;
724: p->col = col;
1.71 schwarze 725: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 726:
727: r->last = p;
728: }
729:
1.138 schwarze 730: /* --- roff parser state data management ---------------------------------- */
731:
1.1 schwarze 732: static void
733: roff_free1(struct roff *r)
734: {
1.42 schwarze 735: int i;
1.27 schwarze 736:
1.218 schwarze 737: tbl_free(r->first_tbl);
1.27 schwarze 738: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 739:
1.219 schwarze 740: eqn_free(r->last_eqn);
1.191 schwarze 741: r->last_eqn = r->eqn = NULL;
1.32 schwarze 742:
1.211 schwarze 743: while (r->mstackpos >= 0)
744: roff_userret(r);
745:
1.1 schwarze 746: while (r->last)
747: roffnode_pop(r);
1.27 schwarze 748:
1.96 schwarze 749: free (r->rstack);
750: r->rstack = NULL;
751: r->rstacksz = 0;
752: r->rstackpos = -1;
753:
754: roff_freereg(r->regtab);
755: r->regtab = NULL;
756:
1.42 schwarze 757: roff_freestr(r->strtab);
1.178 schwarze 758: roff_freestr(r->rentab);
1.42 schwarze 759: roff_freestr(r->xmbtab);
1.178 schwarze 760: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 761:
762: if (r->xtab)
763: for (i = 0; i < 128; i++)
764: free(r->xtab[i].p);
765: free(r->xtab);
766: r->xtab = NULL;
1.1 schwarze 767: }
768:
769: void
770: roff_reset(struct roff *r)
771: {
772: roff_free1(r);
1.239 schwarze 773: r->options |= MPARSE_COMMENT;
1.99 schwarze 774: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 775: r->control = '\0';
776: r->escape = '\\';
1.179 schwarze 777: roffce_lines = 0;
778: roffce_node = NULL;
779: roffit_lines = 0;
780: roffit_macro = NULL;
1.1 schwarze 781: }
782:
783: void
784: roff_free(struct roff *r)
785: {
1.238 schwarze 786: int i;
1.211 schwarze 787:
1.1 schwarze 788: roff_free1(r);
1.211 schwarze 789: for (i = 0; i < r->mstacksz; i++)
790: free(r->mstack[i].argv);
791: free(r->mstack);
1.167 schwarze 792: roffhash_free(r->reqtab);
1.1 schwarze 793: free(r);
794: }
795:
796: struct roff *
1.223 schwarze 797: roff_alloc(int options)
1.1 schwarze 798: {
799: struct roff *r;
800:
1.11 schwarze 801: r = mandoc_calloc(1, sizeof(struct roff));
1.200 schwarze 802: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.239 schwarze 803: r->options = options | MPARSE_COMMENT;
1.99 schwarze 804: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.211 schwarze 805: r->mstackpos = -1;
1.2 schwarze 806: r->rstackpos = -1;
1.175 schwarze 807: r->escape = '\\';
1.149 schwarze 808: return r;
1.137 schwarze 809: }
810:
1.138 schwarze 811: /* --- syntax tree state data management ---------------------------------- */
812:
1.137 schwarze 813: static void
814: roff_man_free1(struct roff_man *man)
815: {
1.228 schwarze 816: if (man->meta.first != NULL)
817: roff_node_delete(man, man->meta.first);
1.137 schwarze 818: free(man->meta.msec);
819: free(man->meta.vol);
820: free(man->meta.os);
821: free(man->meta.arch);
822: free(man->meta.title);
823: free(man->meta.name);
824: free(man->meta.date);
1.228 schwarze 825: free(man->meta.sodest);
1.137 schwarze 826: }
827:
1.229 schwarze 828: void
829: roff_state_reset(struct roff_man *man)
830: {
831: man->last = man->meta.first;
832: man->last_es = NULL;
833: man->flags = 0;
834: man->lastsec = man->lastnamed = SEC_NONE;
835: man->next = ROFF_NEXT_CHILD;
836: roff_setreg(man->roff, "nS", 0, '=');
837: }
838:
1.137 schwarze 839: static void
840: roff_man_alloc1(struct roff_man *man)
841: {
842: memset(&man->meta, 0, sizeof(man->meta));
1.228 schwarze 843: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
844: man->meta.first->type = ROFFT_ROOT;
845: man->meta.macroset = MACROSET_NONE;
1.229 schwarze 846: roff_state_reset(man);
1.137 schwarze 847: }
848:
849: void
850: roff_man_reset(struct roff_man *man)
851: {
852: roff_man_free1(man);
853: roff_man_alloc1(man);
854: }
855:
856: void
857: roff_man_free(struct roff_man *man)
858: {
859: roff_man_free1(man);
1.252 schwarze 860: free(man->os_r);
1.137 schwarze 861: free(man);
862: }
863:
864: struct roff_man *
1.223 schwarze 865: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.137 schwarze 866: {
867: struct roff_man *man;
868:
869: man = mandoc_calloc(1, sizeof(*man));
870: man->roff = roff;
1.188 schwarze 871: man->os_s = os_s;
1.137 schwarze 872: man->quick = quick;
873: roff_man_alloc1(man);
1.168 schwarze 874: roff->man = man;
1.149 schwarze 875: return man;
1.1 schwarze 876: }
877:
1.138 schwarze 878: /* --- syntax tree handling ----------------------------------------------- */
879:
880: struct roff_node *
881: roff_node_alloc(struct roff_man *man, int line, int pos,
882: enum roff_type type, int tok)
883: {
884: struct roff_node *n;
885:
886: n = mandoc_calloc(1, sizeof(*n));
887: n->line = line;
888: n->pos = pos;
889: n->tok = tok;
890: n->type = type;
891: n->sec = man->lastsec;
892:
893: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 894: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 895: else
1.157 schwarze 896: n->flags &= ~NODE_SYNPRETTY;
1.232 schwarze 897: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.231 schwarze 898: n->flags |= NODE_NOFILL;
899: else
900: n->flags &= ~NODE_NOFILL;
1.138 schwarze 901: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 902: n->flags |= NODE_LINE;
1.138 schwarze 903: man->flags &= ~MDOC_NEWLINE;
904:
1.149 schwarze 905: return n;
1.138 schwarze 906: }
907:
908: void
909: roff_node_append(struct roff_man *man, struct roff_node *n)
910: {
911:
912: switch (man->next) {
913: case ROFF_NEXT_SIBLING:
1.153 schwarze 914: if (man->last->next != NULL) {
915: n->next = man->last->next;
916: man->last->next->prev = n;
917: } else
918: man->last->parent->last = n;
1.138 schwarze 919: man->last->next = n;
920: n->prev = man->last;
921: n->parent = man->last->parent;
922: break;
923: case ROFF_NEXT_CHILD:
1.159 schwarze 924: if (man->last->child != NULL) {
925: n->next = man->last->child;
926: man->last->child->prev = n;
927: } else
928: man->last->last = n;
1.138 schwarze 929: man->last->child = n;
930: n->parent = man->last;
931: break;
932: default:
933: abort();
934: }
1.154 schwarze 935: man->last = n;
1.138 schwarze 936:
937: switch (n->type) {
938: case ROFFT_HEAD:
939: n->parent->head = n;
940: break;
941: case ROFFT_BODY:
1.154 schwarze 942: if (n->end != ENDBODY_NOT)
943: return;
1.138 schwarze 944: n->parent->body = n;
945: break;
946: case ROFFT_TAIL:
947: n->parent->tail = n;
948: break;
949: default:
1.154 schwarze 950: return;
1.138 schwarze 951: }
1.154 schwarze 952:
953: /*
954: * Copy over the normalised-data pointer of our parent. Not
955: * everybody has one, but copying a null pointer is fine.
956: */
957:
958: n->norm = n->parent->norm;
959: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 960: }
961:
1.139 schwarze 962: void
963: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
964: {
965: struct roff_node *n;
966:
967: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
968: n->string = roff_strdup(man->roff, word);
969: roff_node_append(man, n);
1.158 schwarze 970: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 971: man->next = ROFF_NEXT_SIBLING;
972: }
973:
974: void
975: roff_word_append(struct roff_man *man, const char *word)
976: {
977: struct roff_node *n;
978: char *addstr, *newstr;
979:
980: n = man->last;
981: addstr = roff_strdup(man->roff, word);
982: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
983: free(addstr);
984: free(n->string);
985: n->string = newstr;
986: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 987: }
988:
989: void
990: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
991: {
992: struct roff_node *n;
993:
994: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
995: roff_node_append(man, n);
996: man->next = ROFF_NEXT_CHILD;
997: }
998:
999: struct roff_node *
1000: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1001: {
1002: struct roff_node *n;
1003:
1004: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1005: roff_node_append(man, n);
1006: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1007: return n;
1.139 schwarze 1008: }
1009:
1.138 schwarze 1010: struct roff_node *
1011: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1012: {
1013: struct roff_node *n;
1014:
1015: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1016: roff_node_append(man, n);
1017: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1018: return n;
1.138 schwarze 1019: }
1020:
1021: struct roff_node *
1022: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1023: {
1024: struct roff_node *n;
1025:
1026: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1027: roff_node_append(man, n);
1028: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1029: return n;
1.139 schwarze 1030: }
1031:
1.193 schwarze 1032: static void
1.218 schwarze 1033: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.139 schwarze 1034: {
1035: struct roff_node *n;
1.218 schwarze 1036: struct tbl_span *span;
1.139 schwarze 1037:
1.228 schwarze 1038: if (man->meta.macroset == MACROSET_MAN)
1.174 schwarze 1039: man_breakscope(man, ROFF_TS);
1.193 schwarze 1040: while ((span = tbl_span(tbl)) != NULL) {
1.218 schwarze 1041: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.193 schwarze 1042: n->span = span;
1043: roff_node_append(man, n);
1044: n->flags |= NODE_VALID | NODE_ENDED;
1045: man->next = ROFF_NEXT_SIBLING;
1046: }
1.138 schwarze 1047: }
1048:
1049: void
1050: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1051: {
1052:
1053: /* Adjust siblings. */
1054:
1055: if (n->prev)
1056: n->prev->next = n->next;
1057: if (n->next)
1058: n->next->prev = n->prev;
1059:
1060: /* Adjust parent. */
1061:
1062: if (n->parent != NULL) {
1063: if (n->parent->child == n)
1064: n->parent->child = n->next;
1065: if (n->parent->last == n)
1066: n->parent->last = n->prev;
1067: }
1068:
1069: /* Adjust parse point. */
1070:
1071: if (man == NULL)
1072: return;
1073: if (man->last == n) {
1074: if (n->prev == NULL) {
1075: man->last = n->parent;
1076: man->next = ROFF_NEXT_CHILD;
1077: } else {
1078: man->last = n->prev;
1079: man->next = ROFF_NEXT_SIBLING;
1080: }
1081: }
1.228 schwarze 1082: if (man->meta.first == n)
1083: man->meta.first = NULL;
1.216 schwarze 1084: }
1085:
1086: void
1087: roff_node_relink(struct roff_man *man, struct roff_node *n)
1088: {
1089: roff_node_unlink(man, n);
1090: n->prev = n->next = NULL;
1091: roff_node_append(man, n);
1.138 schwarze 1092: }
1093:
1094: void
1095: roff_node_free(struct roff_node *n)
1096: {
1097:
1098: if (n->args != NULL)
1099: mdoc_argv_free(n->args);
1100: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1101: free(n->norm);
1.219 schwarze 1102: eqn_box_free(n->eqn);
1.138 schwarze 1103: free(n->string);
1.246 schwarze 1104: free(n->tag);
1.138 schwarze 1105: free(n);
1106: }
1107:
1108: void
1109: roff_node_delete(struct roff_man *man, struct roff_node *n)
1110: {
1111:
1112: while (n->child != NULL)
1113: roff_node_delete(man, n->child);
1114: roff_node_unlink(man, n);
1115: roff_node_free(n);
1.242 schwarze 1116: }
1117:
1118: int
1119: roff_node_transparent(struct roff_node *n)
1120: {
1121: if (n == NULL)
1122: return 0;
1123: if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
1124: return 1;
1.245 schwarze 1125: return roff_tok_transparent(n->tok);
1126: }
1127:
1128: int
1129: roff_tok_transparent(enum roff_tok tok)
1130: {
1131: switch (tok) {
1.242 schwarze 1132: case ROFF_ft:
1133: case ROFF_ll:
1134: case ROFF_mc:
1135: case ROFF_po:
1136: case ROFF_ta:
1137: case MDOC_Db:
1138: case MDOC_Es:
1139: case MDOC_Sm:
1140: case MDOC_Tg:
1141: case MAN_DT:
1142: case MAN_UC:
1143: case MAN_PD:
1144: case MAN_AT:
1145: return 1;
1146: default:
1147: return 0;
1148: }
1149: }
1150:
1151: struct roff_node *
1152: roff_node_child(struct roff_node *n)
1153: {
1154: for (n = n->child; roff_node_transparent(n); n = n->next)
1155: continue;
1156: return n;
1157: }
1158:
1159: struct roff_node *
1160: roff_node_prev(struct roff_node *n)
1161: {
1162: do {
1163: n = n->prev;
1164: } while (roff_node_transparent(n));
1165: return n;
1166: }
1167:
1168: struct roff_node *
1169: roff_node_next(struct roff_node *n)
1170: {
1171: do {
1172: n = n->next;
1173: } while (roff_node_transparent(n));
1174: return n;
1.141 schwarze 1175: }
1176:
1177: void
1178: deroff(char **dest, const struct roff_node *n)
1179: {
1180: char *cp;
1181: size_t sz;
1182:
1.243 schwarze 1183: if (n->string == NULL) {
1.141 schwarze 1184: for (n = n->child; n != NULL; n = n->next)
1185: deroff(dest, n);
1186: return;
1187: }
1188:
1.160 schwarze 1189: /* Skip leading whitespace. */
1.141 schwarze 1190:
1.160 schwarze 1191: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1192: if (cp[0] == '\\' && cp[1] != '\0' &&
1193: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1194: cp++;
1.160 schwarze 1195: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1196: break;
1197: }
1198:
1.161 schwarze 1199: /* Skip trailing backslash. */
1200:
1201: sz = strlen(cp);
1.162 schwarze 1202: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1203: sz--;
1204:
1.141 schwarze 1205: /* Skip trailing whitespace. */
1206:
1.161 schwarze 1207: for (; sz; sz--)
1.141 schwarze 1208: if ( ! isspace((unsigned char)cp[sz-1]))
1209: break;
1210:
1211: /* Skip empty strings. */
1212:
1213: if (sz == 0)
1214: return;
1215:
1216: if (*dest == NULL) {
1217: *dest = mandoc_strndup(cp, sz);
1218: return;
1219: }
1220:
1221: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1222: free(*dest);
1223: *dest = cp;
1.138 schwarze 1224: }
1225:
1226: /* --- main functions of the roff parser ---------------------------------- */
1227:
1.260 schwarze 1228: /*
1229: * Save comments preceding the title macro, for example in order to
1230: * preserve Copyright and license headers in HTML output,
1231: * provide diagnostics about RCS ids and trailing whitespace in comments,
1232: * then discard comments including preceding whitespace.
1233: * This function also handles input line continuation.
1234: */
1.259 schwarze 1235: static int
1.260 schwarze 1236: roff_parse_comment(struct roff *r, struct buf *buf, int ln, int pos, char ec)
1.259 schwarze 1237: {
1238: struct roff_node *n; /* used for header comments */
1239: const char *start; /* start of the string to process */
1240: const char *cp; /* for RCS id parsing */
1241: char *stesc; /* start of an escape sequence ('\\') */
1242: char *ep; /* end of comment string */
1243: int rcsid; /* kind of RCS id seen */
1244:
1245: for (start = stesc = buf->buf + pos;; stesc++) {
1.260 schwarze 1246: /*
1247: * XXX Ugly hack: Remove the newline character that
1248: * mparse_buf_r() appended to mark the end of input
1249: * if it is not preceded by an escape character.
1250: */
1251: if (stesc[0] == '\n') {
1252: assert(stesc[1] == '\0');
1253: stesc[0] = '\0';
1254: }
1255:
1.259 schwarze 1256: /* The line ends without continuation or comment. */
1257: if (stesc[0] == '\0')
1258: return ROFF_CONT;
1259:
1260: /* Unescaped byte: skip it. */
1.260 schwarze 1261: if (stesc[0] != ec)
1.259 schwarze 1262: continue;
1263:
1.260 schwarze 1264: /*
1265: * XXX Ugly hack: Do not attempt to append another line
1266: * if the function mparse_buf_r() appended a newline
1267: * character to indicate the end of input.
1268: */
1269: if (stesc[1] == '\n') {
1270: assert(stesc[2] == '\0');
1271: stesc[0] = '\0';
1272: return ROFF_CONT;
1273: }
1274:
1275: /*
1276: * An escape character at the end of an input line
1277: * requests line continuation.
1278: */
1.259 schwarze 1279: if (stesc[1] == '\0') {
1280: stesc[0] = '\0';
1281: return ROFF_IGN | ROFF_APPEND;
1282: }
1283:
1284: /* Found a comment: process it. */
1285: if (stesc[1] == '"' || stesc[1] == '#')
1286: break;
1287:
1288: /* Escaped escape character: skip them both. */
1.260 schwarze 1289: if (stesc[1] == ec)
1.259 schwarze 1290: stesc++;
1291: }
1292:
1293: /* Look for an RCS id in the comment. */
1294:
1295: rcsid = 0;
1296: if ((cp = strstr(stesc + 2, "$" "OpenBSD")) != NULL) {
1297: rcsid = 1 << MANDOC_OS_OPENBSD;
1298: cp += 8;
1299: } else if ((cp = strstr(stesc + 2, "$" "NetBSD")) != NULL) {
1300: rcsid = 1 << MANDOC_OS_NETBSD;
1301: cp += 7;
1302: }
1303: if (cp != NULL && isalnum((unsigned char)*cp) == 0 &&
1304: strchr(cp, '$') != NULL) {
1305: if (r->man->meta.rcsids & rcsid)
1306: mandoc_msg(MANDOCERR_RCS_REP, ln,
1307: (int)(stesc - buf->buf) + 2, "%s", stesc + 1);
1308: r->man->meta.rcsids |= rcsid;
1309: }
1310:
1311: /* Warn about trailing whitespace at the end of the comment. */
1312:
1313: ep = strchr(stesc + 2, '\0') - 1;
1314: if (*ep == '\n')
1315: *ep-- = '\0';
1316: if (*ep == ' ' || *ep == '\t')
1317: mandoc_msg(MANDOCERR_SPACE_EOL,
1318: ln, (int)(ep - buf->buf), NULL);
1319:
1320: /* Save comments preceding the title macro in the syntax tree. */
1321:
1322: if (r->options & MPARSE_COMMENT) {
1323: while (*ep == ' ' || *ep == '\t')
1324: ep--;
1325: ep[1] = '\0';
1326: n = roff_node_alloc(r->man, ln, stesc + 1 - buf->buf,
1327: ROFFT_COMMENT, TOKEN_NONE);
1328: n->string = mandoc_strdup(stesc + 2);
1329: roff_node_append(r->man, n);
1330: n->flags |= NODE_VALID | NODE_ENDED;
1331: r->man->next = ROFF_NEXT_SIBLING;
1332: }
1333:
1334: /* The comment requests line continuation. */
1335:
1336: if (stesc[1] == '#') {
1337: *stesc = '\0';
1338: return ROFF_IGN | ROFF_APPEND;
1339: }
1340:
1341: /* Discard the comment including preceding whitespace. */
1342:
1343: while (stesc > start && stesc[-1] == ' ' &&
1344: (stesc == start + 1 || stesc[-2] != '\\'))
1345: stesc--;
1346: *stesc = '\0';
1347: return ROFF_CONT;
1348: }
1349:
1.8 schwarze 1350: /*
1.227 schwarze 1351: * In the current line, expand escape sequences that produce parsable
1352: * input text. Also check the syntax of the remaining escape sequences,
1353: * which typically produce output glyphs or change formatter state.
1.8 schwarze 1354: */
1.212 schwarze 1355: static int
1.260 schwarze 1356: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char ec)
1.8 schwarze 1357: {
1.260 schwarze 1358: char ubuf[24]; /* buffer to print a number */
1359: struct mctx *ctx; /* current macro call context */
1360: const char *res; /* the string to be pasted */
1361: const char *src; /* source for copying */
1362: char *dst; /* destination for copying */
1363: int iesc; /* index of leading escape char */
1364: int inam; /* index of the escape name */
1365: int iarg; /* index beginning the argument */
1366: int iendarg; /* index right after the argument */
1367: int iend; /* index right after the sequence */
1.265 schwarze 1368: int isrc, idst; /* to reduce \\ and \. in names */
1.260 schwarze 1369: int deftype; /* type of definition to paste */
1370: int argi; /* macro argument index */
1371: int quote_args; /* true for \\$@, false for \\$* */
1372: int asz; /* length of the replacement */
1373: int rsz; /* length of the rest of the string */
1374: int npos; /* position in numeric expression */
1.53 schwarze 1375: int expand_count; /* to avoid infinite loops */
1.175 schwarze 1376:
1.43 schwarze 1377: expand_count = 0;
1.260 schwarze 1378: while (buf->buf[pos] != '\0') {
1.43 schwarze 1379:
1.260 schwarze 1380: /*
1381: * Skip plain ASCII characters.
1382: * If we have a non-standard escape character,
1383: * escape literal backslashes because all processing in
1384: * subsequent functions uses the standard escaping rules.
1385: */
1.78 schwarze 1386:
1.260 schwarze 1387: if (buf->buf[pos] != ec) {
1388: if (ec != ASCII_ESC && buf->buf[pos] == '\\') {
1389: roff_expand_patch(buf, pos, "\\e", pos + 1);
1390: pos++;
1.175 schwarze 1391: }
1.260 schwarze 1392: pos++;
1.78 schwarze 1393: continue;
1.175 schwarze 1394: }
1.78 schwarze 1395:
1.260 schwarze 1396: /*
1397: * Parse escape sequences,
1398: * issue diagnostic messages when appropriate,
1399: * and skip sequences that do not need expansion.
1400: * If we have a non-standard escape character, translate
1401: * it to backslashes and translate backslashes to \e.
1402: */
1.78 schwarze 1403:
1.264 schwarze 1404: if (roff_escape(buf->buf, ln, pos, &iesc, &inam,
1405: &iarg, &iendarg, &iend) != ESCAPE_EXPAND) {
1.260 schwarze 1406: while (pos < iend) {
1407: if (buf->buf[pos] == ec) {
1408: buf->buf[pos] = '\\';
1409: if (pos + 1 < iend)
1410: pos++;
1411: } else if (buf->buf[pos] == '\\') {
1412: roff_expand_patch(buf,
1413: pos, "\\e", pos + 1);
1414: pos++;
1415: iend++;
1416: }
1417: pos++;
1.224 schwarze 1418: }
1.78 schwarze 1419: continue;
1.42 schwarze 1420: }
1.260 schwarze 1421:
1.265 schwarze 1422: /* Reduce \\ and \. in names. */
1423:
1424: if (buf->buf[inam] == '*' || buf->buf[inam] == 'n') {
1425: isrc = idst = iarg;
1426: while (isrc < iendarg) {
1427: if (isrc + 1 < iendarg &&
1428: buf->buf[isrc] == '\\' &&
1429: (buf->buf[isrc + 1] == '\\' ||
1430: buf->buf[isrc + 1] == '.'))
1431: isrc++;
1432: buf->buf[idst++] = buf->buf[isrc++];
1433: }
1434: iendarg -= isrc - idst;
1435: }
1436:
1.260 schwarze 1437: /* Handle expansion. */
1438:
1439: res = NULL;
1440: switch (buf->buf[inam]) {
1441: case '*':
1442: if (iendarg == iarg)
1.79 schwarze 1443: break;
1.260 schwarze 1444: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1445: if ((res = roff_getstrn(r, buf->buf + iarg,
1446: iendarg - iarg, &deftype)) != NULL)
1.79 schwarze 1447: break;
1.8 schwarze 1448:
1.260 schwarze 1449: /*
1450: * If not overriden,
1451: * let \*(.T through to the formatters.
1452: */
1.8 schwarze 1453:
1.260 schwarze 1454: if (iendarg - iarg == 2 &&
1455: buf->buf[iarg] == '.' &&
1456: buf->buf[iarg + 1] == 'T') {
1457: roff_setstrn(&r->strtab, ".T", 2, NULL, 0, 0);
1458: pos = iend;
1.125 schwarze 1459: continue;
1460: }
1.8 schwarze 1461:
1.260 schwarze 1462: mandoc_msg(MANDOCERR_STR_UNDEF, ln, iesc,
1463: "%.*s", iendarg - iarg, buf->buf + iarg);
1464: break;
1.23 schwarze 1465:
1.211 schwarze 1466: case '$':
1467: if (r->mstackpos < 0) {
1.260 schwarze 1468: mandoc_msg(MANDOCERR_ARG_UNDEF, ln, iesc,
1469: "%.*s", iend - iesc, buf->buf + iesc);
1.211 schwarze 1470: break;
1471: }
1472: ctx = r->mstack + r->mstackpos;
1.260 schwarze 1473: argi = buf->buf[iarg] - '1';
1474: if (argi >= 0 && argi <= 8) {
1475: if (argi < ctx->argc)
1476: res = ctx->argv[argi];
1.211 schwarze 1477: break;
1478: }
1.260 schwarze 1479: if (buf->buf[iarg] == '*')
1.211 schwarze 1480: quote_args = 0;
1.260 schwarze 1481: else if (buf->buf[iarg] == '@')
1.211 schwarze 1482: quote_args = 1;
1483: else {
1.260 schwarze 1484: mandoc_msg(MANDOCERR_ARG_NONUM, ln, iesc,
1485: "%.*s", iend - iesc, buf->buf + iesc);
1.211 schwarze 1486: break;
1487: }
1488: asz = 0;
1.260 schwarze 1489: for (argi = 0; argi < ctx->argc; argi++) {
1490: if (argi)
1.211 schwarze 1491: asz++; /* blank */
1492: if (quote_args)
1493: asz += 2; /* quotes */
1.260 schwarze 1494: asz += strlen(ctx->argv[argi]);
1.211 schwarze 1495: }
1.260 schwarze 1496: if (asz != iend - iesc) {
1497: rsz = buf->sz - iend;
1498: if (asz < iend - iesc)
1499: memmove(buf->buf + iesc + asz,
1500: buf->buf + iend, rsz);
1501: buf->sz = iesc + asz + rsz;
1502: buf->buf = mandoc_realloc(buf->buf, buf->sz);
1503: if (asz > iend - iesc)
1504: memmove(buf->buf + iesc + asz,
1505: buf->buf + iend, rsz);
1.211 schwarze 1506: }
1.260 schwarze 1507: dst = buf->buf + iesc;
1508: for (argi = 0; argi < ctx->argc; argi++) {
1509: if (argi)
1510: *dst++ = ' ';
1.211 schwarze 1511: if (quote_args)
1.260 schwarze 1512: *dst++ = '"';
1513: src = ctx->argv[argi];
1514: while (*src != '\0')
1515: *dst++ = *src++;
1.211 schwarze 1516: if (quote_args)
1.260 schwarze 1517: *dst++ = '"';
1.211 schwarze 1518: }
1519: continue;
1.263 schwarze 1520: case 'A':
1521: ubuf[0] = iendarg > iarg ? '1' : '0';
1522: ubuf[1] = '\0';
1523: res = ubuf;
1524: break;
1.80 schwarze 1525: case 'B':
1.79 schwarze 1526: npos = 0;
1.260 schwarze 1527: ubuf[0] = iendarg > iarg && iend > iendarg &&
1528: roff_evalnum(r, ln, buf->buf + iarg, &npos,
1529: NULL, ROFFNUM_SCALE) &&
1530: npos == iendarg - iarg ? '1' : '0';
1.79 schwarze 1531: ubuf[1] = '\0';
1.260 schwarze 1532: res = ubuf;
1.79 schwarze 1533: break;
1.261 schwarze 1534: case 'V':
1535: mandoc_msg(MANDOCERR_UNSUPP, ln, iesc,
1536: "%.*s", iend - iesc, buf->buf + iesc);
1537: roff_expand_patch(buf, iendarg, "}", iend);
1538: roff_expand_patch(buf, iesc, "${", iarg);
1539: continue;
1.262 schwarze 1540: case 'g':
1541: break;
1.80 schwarze 1542: case 'n':
1.260 schwarze 1543: if (iendarg > iarg)
1.91 schwarze 1544: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.260 schwarze 1545: roff_getregn(r, buf->buf + iarg,
1546: iendarg - iarg, buf->buf[inam + 1]));
1.91 schwarze 1547: else
1548: ubuf[0] = '\0';
1.260 schwarze 1549: res = ubuf;
1.79 schwarze 1550: break;
1.80 schwarze 1551: case 'w':
1.260 schwarze 1552: (void)snprintf(ubuf, sizeof(ubuf),
1553: "%d", (iendarg - iarg) * 24);
1554: res = ubuf;
1555: break;
1556: default:
1.79 schwarze 1557: break;
1558: }
1.260 schwarze 1559: if (res == NULL)
1.37 schwarze 1560: res = "";
1.260 schwarze 1561: if (++expand_count > EXPAND_LIMIT ||
1562: buf->sz + strlen(res) > SHRT_MAX) {
1563: mandoc_msg(MANDOCERR_ROFFLOOP, ln, iesc, NULL);
1.149 schwarze 1564: return ROFF_IGN;
1.8 schwarze 1565: }
1.260 schwarze 1566: roff_expand_patch(buf, iesc, res, iend);
1567: }
1568: return ROFF_CONT;
1569: }
1.8 schwarze 1570:
1.260 schwarze 1571: /*
1572: * Replace the substring from the start position (inclusive)
1573: * to end position (exclusive) with the repl(acement) string.
1574: */
1575: static void
1576: roff_expand_patch(struct buf *buf, int start, const char *repl, int end)
1577: {
1578: char *nbuf;
1.23 schwarze 1579:
1.261 schwarze 1580: buf->sz = mandoc_asprintf(&nbuf, "%.*s%s%s", start, buf->buf,
1581: repl, buf->buf + end) + 1;
1.260 schwarze 1582: free(buf->buf);
1583: buf->buf = nbuf;
1.42 schwarze 1584: }
1.225 schwarze 1585:
1586: /*
1587: * Parse a quoted or unquoted roff-style request or macro argument.
1588: * Return a pointer to the parsed argument, which is either the original
1589: * pointer or advanced by one byte in case the argument is quoted.
1590: * NUL-terminate the argument in place.
1591: * Collapse pairs of quotes inside quoted arguments.
1592: * Advance the argument pointer to the next argument,
1593: * or to the NUL byte terminating the argument line.
1594: */
1595: char *
1.227 schwarze 1596: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.225 schwarze 1597: {
1.227 schwarze 1598: struct buf buf;
1.238 schwarze 1599: char *cp, *start;
1.227 schwarze 1600: int newesc, pairs, quoted, white;
1.225 schwarze 1601:
1602: /* Quoting can only start with a new word. */
1603: start = *cpp;
1604: quoted = 0;
1605: if ('"' == *start) {
1606: quoted = 1;
1607: start++;
1608: }
1609:
1.227 schwarze 1610: newesc = pairs = white = 0;
1.225 schwarze 1611: for (cp = start; '\0' != *cp; cp++) {
1612:
1613: /*
1614: * Move the following text left
1615: * after quoted quotes and after "\\" and "\t".
1616: */
1617: if (pairs)
1618: cp[-pairs] = cp[0];
1619:
1620: if ('\\' == cp[0]) {
1621: /*
1622: * In copy mode, translate double to single
1623: * backslashes and backslash-t to literal tabs.
1624: */
1625: switch (cp[1]) {
1626: case 'a':
1627: case 't':
1.226 schwarze 1628: cp[-pairs] = '\t';
1.227 schwarze 1629: pairs++;
1630: cp++;
1631: break;
1.225 schwarze 1632: case '\\':
1.267 ! schwarze 1633: /*
! 1634: * Signal to roff_expand() that an escape
! 1635: * sequence resulted from copy-in processing
! 1636: * and needs to be checked or interpolated.
! 1637: */
! 1638: cp[-pairs] = ASCII_ESC;
1.227 schwarze 1639: newesc = 1;
1.225 schwarze 1640: pairs++;
1641: cp++;
1642: break;
1643: case ' ':
1644: /* Skip escaped blanks. */
1645: if (0 == quoted)
1646: cp++;
1647: break;
1648: default:
1649: break;
1650: }
1651: } else if (0 == quoted) {
1652: if (' ' == cp[0]) {
1653: /* Unescaped blanks end unquoted args. */
1654: white = 1;
1655: break;
1656: }
1657: } else if ('"' == cp[0]) {
1658: if ('"' == cp[1]) {
1659: /* Quoted quotes collapse. */
1660: pairs++;
1661: cp++;
1662: } else {
1663: /* Unquoted quotes end quoted args. */
1664: quoted = 2;
1665: break;
1666: }
1667: }
1668: }
1669:
1670: /* Quoted argument without a closing quote. */
1671: if (1 == quoted)
1672: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1673:
1674: /* NUL-terminate this argument and move to the next one. */
1675: if (pairs)
1676: cp[-pairs] = '\0';
1677: if ('\0' != *cp) {
1678: *cp++ = '\0';
1679: while (' ' == *cp)
1680: cp++;
1681: }
1682: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1683: *cpp = cp;
1684:
1685: if ('\0' == *cp && (white || ' ' == cp[-1]))
1686: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1687:
1.227 schwarze 1688: start = mandoc_strdup(start);
1689: if (newesc == 0)
1690: return start;
1691:
1692: buf.buf = start;
1693: buf.sz = strlen(start) + 1;
1694: buf.next = NULL;
1695: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1696: free(buf.buf);
1697: buf.buf = mandoc_strdup("");
1698: }
1699: return buf.buf;
1.225 schwarze 1700: }
1701:
1.42 schwarze 1702:
1703: /*
1.147 schwarze 1704: * Process text streams.
1.42 schwarze 1705: */
1.212 schwarze 1706: static int
1.177 schwarze 1707: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1708: {
1709: size_t sz;
1710: const char *start;
1.51 schwarze 1711: char *p;
1712: int isz;
1.42 schwarze 1713: enum mandoc_esc esc;
1714:
1.147 schwarze 1715: /* Spring the input line trap. */
1716:
1717: if (roffit_lines == 1) {
1718: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1719: free(buf->buf);
1720: buf->buf = p;
1721: buf->sz = isz + 1;
1722: *offs = 0;
1723: free(roffit_macro);
1724: roffit_lines = 0;
1.149 schwarze 1725: return ROFF_REPARSE;
1.147 schwarze 1726: } else if (roffit_lines > 1)
1727: --roffit_lines;
1728:
1.177 schwarze 1729: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1730: if (roffce_lines < 1) {
1731: r->man->last = roffce_node;
1732: r->man->next = ROFF_NEXT_SIBLING;
1733: roffce_lines = 0;
1734: roffce_node = NULL;
1735: } else
1736: roffce_lines--;
1737: }
1738:
1.147 schwarze 1739: /* Convert all breakable hyphens into ASCII_HYPH. */
1740:
1.110 schwarze 1741: start = p = buf->buf + pos;
1.42 schwarze 1742:
1.110 schwarze 1743: while (*p != '\0') {
1.42 schwarze 1744: sz = strcspn(p, "-\\");
1745: p += sz;
1746:
1.110 schwarze 1747: if (*p == '\0')
1.42 schwarze 1748: break;
1749:
1.110 schwarze 1750: if (*p == '\\') {
1.42 schwarze 1751: /* Skip over escapes. */
1752: p++;
1.62 schwarze 1753: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1754: if (esc == ESCAPE_ERROR)
1.42 schwarze 1755: break;
1.136 schwarze 1756: while (*p == '-')
1757: p++;
1.42 schwarze 1758: continue;
1759: } else if (p == start) {
1760: p++;
1761: continue;
1762: }
1763:
1.44 schwarze 1764: if (isalpha((unsigned char)p[-1]) &&
1765: isalpha((unsigned char)p[1]))
1.42 schwarze 1766: *p = ASCII_HYPH;
1767: p++;
1.8 schwarze 1768: }
1.149 schwarze 1769: return ROFF_CONT;
1.8 schwarze 1770: }
1771:
1.212 schwarze 1772: int
1.249 schwarze 1773: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs, size_t len)
1.1 schwarze 1774: {
1.166 schwarze 1775: enum roff_tok t;
1.212 schwarze 1776: int e;
1.110 schwarze 1777: int pos; /* parse point */
1.115 schwarze 1778: int spos; /* saved parse point for messages */
1.110 schwarze 1779: int ppos; /* original offset in buf->buf */
1780: int ctl; /* macro line (boolean) */
1781:
1782: ppos = pos = *offs;
1.249 schwarze 1783:
1784: if (len > 80 && r->tbl == NULL && r->eqn == NULL &&
1785: (r->man->flags & ROFF_NOFILL) == 0 &&
1786: strchr(" .\\", buf->buf[pos]) == NULL &&
1787: buf->buf[pos] != r->control &&
1788: strcspn(buf->buf, " ") < 80)
1789: mandoc_msg(MANDOCERR_TEXT_LONG, ln, (int)len - 1,
1790: "%.20s...", buf->buf + pos);
1.1 schwarze 1791:
1.102 schwarze 1792: /* Handle in-line equation delimiters. */
1793:
1.108 schwarze 1794: if (r->tbl == NULL &&
1795: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1796: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1797: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1798: if (e == ROFF_REPARSE)
1.149 schwarze 1799: return e;
1.102 schwarze 1800: assert(e == ROFF_CONT);
1801: }
1802:
1.259 schwarze 1803: /* Handle comments and escape sequences. */
1804:
1805: e = roff_parse_comment(r, buf, ln, pos, r->escape);
1806: if ((e & ROFF_MASK) == ROFF_IGN)
1807: return e;
1808: assert(e == ROFF_CONT);
1.8 schwarze 1809:
1.227 schwarze 1810: e = roff_expand(r, buf, ln, pos, r->escape);
1.212 schwarze 1811: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1812: return e;
1.110 schwarze 1813: assert(e == ROFF_CONT);
1.8 schwarze 1814:
1.110 schwarze 1815: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1816:
1.8 schwarze 1817: /*
1.2 schwarze 1818: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1819: * text through the macro's filter.
1820: * Equations process all content themselves.
1821: * Tables process almost all content themselves, but we want
1822: * to warn about macros before passing it there.
1.2 schwarze 1823: */
1824:
1.124 schwarze 1825: if (r->last != NULL && ! ctl) {
1.2 schwarze 1826: t = r->last->tok;
1.110 schwarze 1827: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.212 schwarze 1828: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1829: return e;
1.212 schwarze 1830: e &= ~ROFF_MASK;
1831: } else
1832: e = ROFF_IGN;
1.191 schwarze 1833: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1834: eqn_read(r->eqn, buf->buf + ppos);
1.212 schwarze 1835: return e;
1.191 schwarze 1836: }
1.193 schwarze 1837: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1838: tbl_read(r->tbl, ln, buf->buf, ppos);
1.218 schwarze 1839: roff_addtbl(r->man, ln, r->tbl);
1.212 schwarze 1840: return e;
1.193 schwarze 1841: }
1.239 schwarze 1842: if ( ! ctl) {
1843: r->options &= ~MPARSE_COMMENT;
1.212 schwarze 1844: return roff_parsetext(r, buf, pos, offs) | e;
1.239 schwarze 1845: }
1.100 schwarze 1846:
1847: /* Skip empty request lines. */
1848:
1.110 schwarze 1849: if (buf->buf[pos] == '"') {
1.222 schwarze 1850: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.149 schwarze 1851: return ROFF_IGN;
1.110 schwarze 1852: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1853: return ROFF_IGN;
1.2 schwarze 1854:
1855: /*
1856: * If a scope is open, go to the child handler for that macro,
1857: * as it may want to preprocess before doing anything with it.
1858: */
1859:
1860: if (r->last) {
1.1 schwarze 1861: t = r->last->tok;
1.149 schwarze 1862: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1863: }
1864:
1.239 schwarze 1865: r->options &= ~MPARSE_COMMENT;
1.115 schwarze 1866: spos = pos;
1867: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.258 schwarze 1868: return roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1869: }
1870:
1871: /*
1872: * Handle a new request or macro.
1873: * May be called outside any scope or from inside a conditional scope.
1874: */
1875: static int
1876: roff_req_or_macro(ROFF_ARGS) {
1.115 schwarze 1877:
1.258 schwarze 1878: /* For now, tables ignore most macros and some request. */
1.115 schwarze 1879:
1.258 schwarze 1880: if (r->tbl != NULL && (tok == TOKEN_NONE || tok == ROFF_TS ||
1881: tok == ROFF_br || tok == ROFF_ce || tok == ROFF_rj ||
1882: tok == ROFF_sp)) {
1.222 schwarze 1883: mandoc_msg(MANDOCERR_TBLMACRO,
1.258 schwarze 1884: ln, ppos, "%s", buf->buf + ppos);
1885: if (tok != TOKEN_NONE)
1.149 schwarze 1886: return ROFF_IGN;
1.129 schwarze 1887: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1888: pos++;
1.163 schwarze 1889: while (buf->buf[pos] == ' ')
1.129 schwarze 1890: pos++;
1.193 schwarze 1891: tbl_read(r->tbl, ln, buf->buf, pos);
1.218 schwarze 1892: roff_addtbl(r->man, ln, r->tbl);
1.193 schwarze 1893: return ROFF_IGN;
1.115 schwarze 1894: }
1895:
1.177 schwarze 1896: /* For now, let high level macros abort .ce mode. */
1897:
1.258 schwarze 1898: if (roffce_node != NULL &&
1899: (tok == TOKEN_NONE || tok == ROFF_Dd || tok == ROFF_EQ ||
1900: tok == ROFF_TH || tok == ROFF_TS)) {
1.177 schwarze 1901: r->man->last = roffce_node;
1902: r->man->next = ROFF_NEXT_SIBLING;
1903: roffce_lines = 0;
1904: roffce_node = NULL;
1905: }
1906:
1.2 schwarze 1907: /*
1.115 schwarze 1908: * This is neither a roff request nor a user-defined macro.
1909: * Let the standard macro set parsers handle it.
1.2 schwarze 1910: */
1911:
1.258 schwarze 1912: if (tok == TOKEN_NONE)
1.149 schwarze 1913: return ROFF_CONT;
1.115 schwarze 1914:
1.258 schwarze 1915: /* Execute a roff request or a user-defined macro. */
1.1 schwarze 1916:
1.258 schwarze 1917: return (*roffs[tok].proc)(r, tok, buf, ln, ppos, pos, offs);
1.2 schwarze 1918: }
1919:
1.211 schwarze 1920: /*
1921: * Internal interface function to tell the roff parser that execution
1922: * of the current macro ended. This is required because macro
1923: * definitions usually do not end with a .return request.
1924: */
1925: void
1926: roff_userret(struct roff *r)
1927: {
1928: struct mctx *ctx;
1929: int i;
1930:
1931: assert(r->mstackpos >= 0);
1932: ctx = r->mstack + r->mstackpos;
1933: for (i = 0; i < ctx->argc; i++)
1934: free(ctx->argv[i]);
1935: ctx->argc = 0;
1936: r->mstackpos--;
1937: }
1938:
1.27 schwarze 1939: void
1.2 schwarze 1940: roff_endparse(struct roff *r)
1941: {
1.193 schwarze 1942: if (r->last != NULL)
1.222 schwarze 1943: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1944: r->last->col, "%s", roff_name[r->last->tok]);
1.27 schwarze 1945:
1.193 schwarze 1946: if (r->eqn != NULL) {
1.222 schwarze 1947: mandoc_msg(MANDOCERR_BLK_NOEND,
1.191 schwarze 1948: r->eqn->node->line, r->eqn->node->pos, "EQ");
1949: eqn_parse(r->eqn);
1950: r->eqn = NULL;
1.32 schwarze 1951: }
1952:
1.193 schwarze 1953: if (r->tbl != NULL) {
1.218 schwarze 1954: tbl_end(r->tbl, 1);
1.193 schwarze 1955: r->tbl = NULL;
1.27 schwarze 1956: }
1.1 schwarze 1957: }
1958:
1959: /*
1.258 schwarze 1960: * Parse the request or macro name at buf[*pos].
1961: * Return ROFF_RENAMED, ROFF_USERDEF, or a ROFF_* token value.
1962: * For empty, undefined, mdoc(7), and man(7) macros, return TOKEN_NONE.
1963: * As a side effect, set r->current_string to the definition or to NULL.
1.1 schwarze 1964: */
1.166 schwarze 1965: static enum roff_tok
1.87 schwarze 1966: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1967: {
1.87 schwarze 1968: char *cp;
1.16 schwarze 1969: const char *mac;
1970: size_t maclen;
1.187 schwarze 1971: int deftype;
1.166 schwarze 1972: enum roff_tok t;
1.1 schwarze 1973:
1.87 schwarze 1974: cp = buf + *pos;
1975:
1976: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1977: return TOKEN_NONE;
1.1 schwarze 1978:
1.87 schwarze 1979: mac = cp;
1980: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1981:
1.187 schwarze 1982: deftype = ROFFDEF_USER | ROFFDEF_REN;
1983: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1984: switch (deftype) {
1985: case ROFFDEF_USER:
1986: t = ROFF_USERDEF;
1987: break;
1988: case ROFFDEF_REN:
1989: t = ROFF_RENAMED;
1990: break;
1991: default:
1992: t = roffhash_find(r->reqtab, mac, maclen);
1993: break;
1994: }
1.166 schwarze 1995: if (t != TOKEN_NONE)
1.87 schwarze 1996: *pos = cp - buf;
1.197 schwarze 1997: else if (deftype == ROFFDEF_UNDEF) {
1998: /* Using an undefined macro defines it to be empty. */
1999: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
2000: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
2001: }
1.149 schwarze 2002: return t;
1.1 schwarze 2003: }
2004:
1.138 schwarze 2005: /* --- handling of request blocks ----------------------------------------- */
2006:
1.247 schwarze 2007: /*
2008: * Close a macro definition block or an "ignore" block.
2009: */
1.212 schwarze 2010: static int
1.2 schwarze 2011: roff_cblock(ROFF_ARGS)
1.1 schwarze 2012: {
1.247 schwarze 2013: int rr;
1.2 schwarze 2014:
1.110 schwarze 2015: if (r->last == NULL) {
1.222 schwarze 2016: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 2017: return ROFF_IGN;
1.2 schwarze 2018: }
1.1 schwarze 2019:
1.2 schwarze 2020: switch (r->last->tok) {
1.80 schwarze 2021: case ROFF_am:
2022: case ROFF_ami:
2023: case ROFF_de:
2024: case ROFF_dei:
2025: case ROFF_ig:
1.2 schwarze 2026: break;
1.247 schwarze 2027: case ROFF_am1:
2028: case ROFF_de1:
2029: /* Remapped in roff_block(). */
2030: abort();
1.2 schwarze 2031: default:
1.222 schwarze 2032: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 2033: return ROFF_IGN;
1.2 schwarze 2034: }
2035:
1.247 schwarze 2036: roffnode_pop(r);
2037: roffnode_cleanscope(r);
2038:
2039: /*
2040: * If a conditional block with braces is still open,
2041: * check for "\}" block end markers.
2042: */
2043:
2044: if (r->last != NULL && r->last->endspan < 0) {
2045: rr = 1; /* If arguments follow "\}", warn about them. */
2046: roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
2047: }
2048:
1.110 schwarze 2049: if (buf->buf[pos] != '\0')
1.222 schwarze 2050: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 2051: ".. %s", buf->buf + pos);
1.2 schwarze 2052:
1.149 schwarze 2053: return ROFF_IGN;
1.2 schwarze 2054: }
1.1 schwarze 2055:
1.236 schwarze 2056: /*
2057: * Pop all nodes ending at the end of the current input line.
2058: * Return the number of loops ended.
2059: */
1.212 schwarze 2060: static int
1.2 schwarze 2061: roffnode_cleanscope(struct roff *r)
2062: {
1.212 schwarze 2063: int inloop;
1.1 schwarze 2064:
1.212 schwarze 2065: inloop = 0;
1.247 schwarze 2066: while (r->last != NULL && r->last->endspan > 0) {
1.46 schwarze 2067: if (--r->last->endspan != 0)
1.2 schwarze 2068: break;
1.212 schwarze 2069: inloop += roffnode_pop(r);
1.2 schwarze 2070: }
1.212 schwarze 2071: return inloop;
1.2 schwarze 2072: }
1.1 schwarze 2073:
1.236 schwarze 2074: /*
1.247 schwarze 2075: * Handle the closing "\}" of a conditional block.
1.236 schwarze 2076: * Apart from generating warnings, this only pops nodes.
2077: * Return the number of loops ended.
2078: */
1.212 schwarze 2079: static int
1.68 schwarze 2080: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 2081: {
2082: if (NULL == r->last) {
1.222 schwarze 2083: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2084: return 0;
1.2 schwarze 2085: }
1.1 schwarze 2086:
1.2 schwarze 2087: switch (r->last->tok) {
1.80 schwarze 2088: case ROFF_el:
2089: case ROFF_ie:
2090: case ROFF_if:
1.212 schwarze 2091: case ROFF_while:
1.2 schwarze 2092: break;
2093: default:
1.222 schwarze 2094: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2095: return 0;
1.2 schwarze 2096: }
1.1 schwarze 2097:
1.2 schwarze 2098: if (r->last->endspan > -1) {
1.222 schwarze 2099: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2100: return 0;
1.2 schwarze 2101: }
2102:
1.212 schwarze 2103: return roffnode_pop(r) + roffnode_cleanscope(r);
1.1 schwarze 2104: }
2105:
1.212 schwarze 2106: static int
1.2 schwarze 2107: roff_block(ROFF_ARGS)
1.1 schwarze 2108: {
1.187 schwarze 2109: const char *name, *value;
2110: char *call, *cp, *iname, *rname;
2111: size_t csz, namesz, rsz;
2112: int deftype;
1.16 schwarze 2113:
1.93 schwarze 2114: /* Ignore groff compatibility mode for now. */
1.2 schwarze 2115:
1.110 schwarze 2116: if (tok == ROFF_de1)
1.93 schwarze 2117: tok = ROFF_de;
1.123 schwarze 2118: else if (tok == ROFF_dei1)
2119: tok = ROFF_dei;
1.110 schwarze 2120: else if (tok == ROFF_am1)
1.93 schwarze 2121: tok = ROFF_am;
1.123 schwarze 2122: else if (tok == ROFF_ami1)
2123: tok = ROFF_ami;
1.93 schwarze 2124:
2125: /* Parse the macro name argument. */
2126:
1.110 schwarze 2127: cp = buf->buf + pos;
2128: if (tok == ROFF_ig) {
1.93 schwarze 2129: iname = NULL;
2130: namesz = 0;
2131: } else {
2132: iname = cp;
2133: namesz = roff_getname(r, &cp, ln, ppos);
2134: iname[namesz] = '\0';
2135: }
1.22 schwarze 2136:
1.93 schwarze 2137: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 2138:
1.110 schwarze 2139: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2140: deftype = ROFFDEF_USER;
2141: name = roff_getstrn(r, iname, namesz, &deftype);
2142: if (name == NULL) {
1.222 schwarze 2143: mandoc_msg(MANDOCERR_STR_UNDEF,
2144: ln, (int)(iname - buf->buf),
1.93 schwarze 2145: "%.*s", (int)namesz, iname);
2146: namesz = 0;
2147: } else
2148: namesz = strlen(name);
2149: } else
2150: name = iname;
1.22 schwarze 2151:
1.110 schwarze 2152: if (namesz == 0 && tok != ROFF_ig) {
1.222 schwarze 2153: mandoc_msg(MANDOCERR_REQ_EMPTY,
2154: ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2155: return ROFF_IGN;
1.93 schwarze 2156: }
1.2 schwarze 2157:
1.16 schwarze 2158: roffnode_push(r, tok, name, ln, ppos);
2159:
2160: /*
2161: * At the beginning of a `de' macro, clear the existing string
2162: * with the same name, if there is one. New content will be
1.66 schwarze 2163: * appended from roff_block_text() in multiline mode.
1.16 schwarze 2164: */
1.22 schwarze 2165:
1.183 schwarze 2166: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 2167: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 2168: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 2169: } else if (tok == ROFF_am || tok == ROFF_ami) {
2170: deftype = ROFFDEF_ANY;
2171: value = roff_getstrn(r, iname, namesz, &deftype);
2172: switch (deftype) { /* Before appending, ... */
2173: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2174: roff_setstrn(&r->strtab, name, namesz,
2175: value, strlen(value), 0);
2176: break;
2177: case ROFFDEF_REN: /* call original standard macro. */
2178: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2179: (int)strlen(value), value);
2180: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2181: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2182: free(call);
2183: break;
2184: case ROFFDEF_STD: /* rename and call standard macro. */
2185: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2186: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2187: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2188: (int)rsz, rname);
2189: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2190: free(call);
2191: free(rname);
2192: break;
2193: default:
2194: break;
2195: }
1.183 schwarze 2196: }
1.2 schwarze 2197:
1.110 schwarze 2198: if (*cp == '\0')
1.149 schwarze 2199: return ROFF_IGN;
1.1 schwarze 2200:
1.93 schwarze 2201: /* Get the custom end marker. */
1.22 schwarze 2202:
1.93 schwarze 2203: iname = cp;
1.86 schwarze 2204: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 2205:
2206: /* Resolve the end marker if it is indirect. */
2207:
1.110 schwarze 2208: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2209: deftype = ROFFDEF_USER;
2210: name = roff_getstrn(r, iname, namesz, &deftype);
2211: if (name == NULL) {
1.222 schwarze 2212: mandoc_msg(MANDOCERR_STR_UNDEF,
2213: ln, (int)(iname - buf->buf),
1.93 schwarze 2214: "%.*s", (int)namesz, iname);
2215: namesz = 0;
2216: } else
2217: namesz = strlen(name);
2218: } else
2219: name = iname;
2220:
1.86 schwarze 2221: if (namesz)
2222: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 2223:
1.110 schwarze 2224: if (*cp != '\0')
1.222 schwarze 2225: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.167 schwarze 2226: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 2227:
1.149 schwarze 2228: return ROFF_IGN;
1.1 schwarze 2229: }
2230:
1.212 schwarze 2231: static int
1.2 schwarze 2232: roff_block_sub(ROFF_ARGS)
1.1 schwarze 2233: {
1.166 schwarze 2234: enum roff_tok t;
1.2 schwarze 2235: int i, j;
2236:
2237: /*
1.257 schwarze 2238: * If a custom end marker is a user-defined or predefined macro
2239: * or a request, interpret it.
1.2 schwarze 2240: */
2241:
2242: if (r->last->end) {
1.35 schwarze 2243: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 2244: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 2245: break;
1.1 schwarze 2246:
1.110 schwarze 2247: if (r->last->end[j] == '\0' &&
2248: (buf->buf[i] == '\0' ||
2249: buf->buf[i] == ' ' ||
2250: buf->buf[i] == '\t')) {
1.2 schwarze 2251: roffnode_pop(r);
2252: roffnode_cleanscope(r);
1.1 schwarze 2253:
1.110 schwarze 2254: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 2255: i++;
2256:
2257: pos = i;
1.110 schwarze 2258: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 2259: TOKEN_NONE)
1.149 schwarze 2260: return ROFF_RERUN;
2261: return ROFF_IGN;
1.2 schwarze 2262: }
1.1 schwarze 2263: }
2264:
1.257 schwarze 2265: /* Handle the standard end marker. */
1.1 schwarze 2266:
1.110 schwarze 2267: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.257 schwarze 2268: if (t == ROFF_cblock)
2269: return roff_cblock(r, t, buf, ln, ppos, pos, offs);
1.1 schwarze 2270:
1.257 schwarze 2271: /* Not an end marker, so append the line to the block. */
1.1 schwarze 2272:
1.257 schwarze 2273: if (tok != ROFF_ig)
2274: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
2275: return ROFF_IGN;
1.2 schwarze 2276: }
2277:
1.212 schwarze 2278: static int
1.2 schwarze 2279: roff_block_text(ROFF_ARGS)
2280: {
2281:
1.110 schwarze 2282: if (tok != ROFF_ig)
2283: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 2284:
1.149 schwarze 2285: return ROFF_IGN;
1.2 schwarze 2286: }
2287:
1.247 schwarze 2288: /*
2289: * Check for a closing "\}" and handle it.
2290: * In this function, the final "int *offs" argument is used for
2291: * different purposes than elsewhere:
2292: * Input: *offs == 0: caller wants to discard arguments following \}
2293: * *offs == 1: caller wants to preserve text following \}
2294: * Output: *offs = 0: tell caller to discard input line
2295: * *offs = 1: tell caller to use input line
2296: */
1.212 schwarze 2297: static int
1.247 schwarze 2298: roff_cond_checkend(ROFF_ARGS)
1.2 schwarze 2299: {
1.212 schwarze 2300: char *ep;
2301: int endloop, irc, rr;
1.2 schwarze 2302:
1.212 schwarze 2303: irc = ROFF_IGN;
1.2 schwarze 2304: rr = r->last->rule;
1.212 schwarze 2305: endloop = tok != ROFF_while ? ROFF_IGN :
2306: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2307: if (roffnode_cleanscope(r))
2308: irc |= endloop;
1.39 schwarze 2309:
1.69 schwarze 2310: /*
1.247 schwarze 2311: * If "\}" occurs on a macro line without a preceding macro or
2312: * a text line contains nothing else, drop the line completely.
1.69 schwarze 2313: */
2314:
1.110 schwarze 2315: ep = buf->buf + pos;
1.247 schwarze 2316: if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))
1.71 schwarze 2317: rr = 0;
1.69 schwarze 2318:
1.215 schwarze 2319: /*
1.247 schwarze 2320: * The closing delimiter "\}" rewinds the conditional scope
1.215 schwarze 2321: * but is otherwise ignored when interpreting the line.
2322: */
1.39 schwarze 2323:
1.110 schwarze 2324: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 2325: switch (ep[1]) {
2326: case '}':
1.248 schwarze 2327: if (ep[2] == '\0')
2328: ep[0] = '\0';
2329: else if (rr)
1.247 schwarze 2330: ep[1] = '&';
2331: else
2332: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.212 schwarze 2333: if (roff_ccond(r, ln, ep - buf->buf))
2334: irc |= endloop;
1.190 schwarze 2335: break;
2336: case '\0':
2337: ++ep;
2338: break;
2339: default:
2340: ep += 2;
2341: break;
1.70 schwarze 2342: }
1.50 schwarze 2343: }
1.247 schwarze 2344: *offs = rr;
2345: return irc;
2346: }
1.190 schwarze 2347:
1.247 schwarze 2348: /*
2349: * Parse and process a request or macro line in conditional scope.
2350: */
2351: static int
2352: roff_cond_sub(ROFF_ARGS)
2353: {
2354: struct roffnode *bl;
1.258 schwarze 2355: int irc, rr, spos;
1.247 schwarze 2356: enum roff_tok t;
2357:
2358: rr = 0; /* If arguments follow "\}", skip them. */
2359: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.258 schwarze 2360: spos = pos;
1.240 schwarze 2361: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2362:
1.190 schwarze 2363: /*
1.258 schwarze 2364: * Handle requests and macros if the conditional evaluated
2365: * to true or if they are structurally required.
2366: * The .break request is always handled specially.
1.190 schwarze 2367: */
2368:
1.236 schwarze 2369: if (t == ROFF_break) {
2370: if (irc & ROFF_LOOPMASK)
2371: irc = ROFF_IGN | ROFF_LOOPEXIT;
2372: else if (rr) {
2373: for (bl = r->last; bl != NULL; bl = bl->parent) {
2374: bl->rule = 0;
2375: if (bl->tok == ROFF_while)
2376: break;
2377: }
2378: }
1.258 schwarze 2379: } else if (rr || (t < TOKEN_NONE && roffs[t].flags & ROFFMAC_STRUCT)) {
2380: irc |= roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1.255 schwarze 2381: if (irc & ROFF_WHILE)
2382: irc &= ~(ROFF_LOOPCONT | ROFF_LOOPEXIT);
1.258 schwarze 2383: }
1.212 schwarze 2384: return irc;
1.2 schwarze 2385: }
2386:
1.247 schwarze 2387: /*
2388: * Parse and process a text line in conditional scope.
2389: */
1.212 schwarze 2390: static int
1.2 schwarze 2391: roff_cond_text(ROFF_ARGS)
2392: {
1.247 schwarze 2393: int irc, rr;
1.215 schwarze 2394:
1.247 schwarze 2395: rr = 1; /* If arguments follow "\}", preserve them. */
2396: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.212 schwarze 2397: if (rr)
2398: irc |= ROFF_CONT;
2399: return irc;
1.2 schwarze 2400: }
2401:
1.138 schwarze 2402: /* --- handling of numeric and conditional expressions -------------------- */
2403:
1.77 schwarze 2404: /*
2405: * Parse a single signed integer number. Stop at the first non-digit.
2406: * If there is at least one digit, return success and advance the
2407: * parse point, else return failure and let the parse point unchanged.
2408: * Ignore overflows, treat them just like the C language.
2409: */
1.56 schwarze 2410: static int
1.133 schwarze 2411: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2412: {
1.133 schwarze 2413: int myres, scaled, n, p;
1.79 schwarze 2414:
2415: if (NULL == res)
2416: res = &myres;
1.56 schwarze 2417:
2418: p = *pos;
2419: n = v[p] == '-';
1.133 schwarze 2420: if (n || v[p] == '+')
1.56 schwarze 2421: p++;
2422:
1.133 schwarze 2423: if (flags & ROFFNUM_WHITE)
2424: while (isspace((unsigned char)v[p]))
2425: p++;
2426:
1.56 schwarze 2427: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2428: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2429: if (p == *pos + n)
2430: return 0;
2431:
2432: if (n)
2433: *res = -*res;
2434:
1.126 schwarze 2435: /* Each number may be followed by one optional scaling unit. */
2436:
2437: switch (v[p]) {
2438: case 'f':
1.133 schwarze 2439: scaled = *res * 65536;
1.126 schwarze 2440: break;
2441: case 'i':
1.133 schwarze 2442: scaled = *res * 240;
1.126 schwarze 2443: break;
2444: case 'c':
1.133 schwarze 2445: scaled = *res * 240 / 2.54;
1.126 schwarze 2446: break;
2447: case 'v':
2448: case 'P':
1.133 schwarze 2449: scaled = *res * 40;
1.126 schwarze 2450: break;
2451: case 'm':
2452: case 'n':
1.133 schwarze 2453: scaled = *res * 24;
1.126 schwarze 2454: break;
2455: case 'p':
1.133 schwarze 2456: scaled = *res * 10 / 3;
1.126 schwarze 2457: break;
2458: case 'u':
1.133 schwarze 2459: scaled = *res;
1.126 schwarze 2460: break;
2461: case 'M':
1.133 schwarze 2462: scaled = *res * 6 / 25;
1.126 schwarze 2463: break;
2464: default:
1.133 schwarze 2465: scaled = *res;
1.126 schwarze 2466: p--;
2467: break;
2468: }
1.133 schwarze 2469: if (flags & ROFFNUM_SCALE)
2470: *res = scaled;
1.126 schwarze 2471:
2472: *pos = p + 1;
1.149 schwarze 2473: return 1;
1.56 schwarze 2474: }
2475:
1.71 schwarze 2476: /*
2477: * Evaluate a string comparison condition.
2478: * The first character is the delimiter.
2479: * Succeed if the string up to its second occurrence
2480: * matches the string up to its third occurence.
2481: * Advance the cursor after the third occurrence
2482: * or lacking that, to the end of the line.
2483: */
2484: static int
2485: roff_evalstrcond(const char *v, int *pos)
2486: {
2487: const char *s1, *s2, *s3;
2488: int match;
2489:
2490: match = 0;
2491: s1 = v + *pos; /* initial delimiter */
2492: s2 = s1 + 1; /* for scanning the first string */
2493: s3 = strchr(s2, *s1); /* for scanning the second string */
2494:
2495: if (NULL == s3) /* found no middle delimiter */
2496: goto out;
2497:
2498: while ('\0' != *++s3) {
2499: if (*s2 != *s3) { /* mismatch */
2500: s3 = strchr(s3, *s1);
2501: break;
2502: }
2503: if (*s3 == *s1) { /* found the final delimiter */
2504: match = 1;
2505: break;
2506: }
2507: s2++;
2508: }
2509:
2510: out:
2511: if (NULL == s3)
2512: s3 = strchr(s2, '\0');
1.114 schwarze 2513: else if (*s3 != '\0')
1.71 schwarze 2514: s3++;
2515: *pos = s3 - v;
1.149 schwarze 2516: return match;
1.71 schwarze 2517: }
2518:
1.77 schwarze 2519: /*
2520: * Evaluate an optionally negated single character, numerical,
2521: * or string condition.
2522: */
1.71 schwarze 2523: static int
1.143 schwarze 2524: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2525: {
1.208 schwarze 2526: const char *start, *end;
2527: char *cp, *name;
2528: size_t sz;
2529: int deftype, len, number, savepos, istrue, wanttrue;
1.5 schwarze 2530:
1.71 schwarze 2531: if ('!' == v[*pos]) {
2532: wanttrue = 0;
2533: (*pos)++;
2534: } else
2535: wanttrue = 1;
2536:
1.5 schwarze 2537: switch (v[*pos]) {
1.112 schwarze 2538: case '\0':
1.149 schwarze 2539: return 0;
1.80 schwarze 2540: case 'n':
2541: case 'o':
1.5 schwarze 2542: (*pos)++;
1.149 schwarze 2543: return wanttrue;
1.80 schwarze 2544: case 'e':
2545: case 't':
1.111 schwarze 2546: case 'v':
1.5 schwarze 2547: (*pos)++;
1.149 schwarze 2548: return !wanttrue;
1.208 schwarze 2549: case 'c':
2550: do {
2551: (*pos)++;
2552: } while (v[*pos] == ' ');
2553:
2554: /*
2555: * Quirk for groff compatibility:
2556: * The horizontal tab is neither available nor unavailable.
2557: */
2558:
2559: if (v[*pos] == '\t') {
2560: (*pos)++;
2561: return 0;
2562: }
2563:
2564: /* Printable ASCII characters are available. */
2565:
2566: if (v[*pos] != '\\') {
2567: (*pos)++;
2568: return wanttrue;
2569: }
2570:
2571: end = v + ++*pos;
2572: switch (mandoc_escape(&end, &start, &len)) {
2573: case ESCAPE_SPECIAL:
2574: istrue = mchars_spec2cp(start, len) != -1;
2575: break;
2576: case ESCAPE_UNICODE:
2577: istrue = 1;
2578: break;
2579: case ESCAPE_NUMBERED:
2580: istrue = mchars_num2char(start, len) != -1;
2581: break;
2582: default:
2583: istrue = !wanttrue;
2584: break;
2585: }
2586: *pos = end - v;
2587: return istrue == wanttrue;
1.182 schwarze 2588: case 'd':
1.143 schwarze 2589: case 'r':
1.182 schwarze 2590: cp = v + *pos + 1;
2591: while (*cp == ' ')
2592: cp++;
2593: name = cp;
2594: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2595: if (sz == 0)
2596: istrue = 0;
2597: else if (v[*pos] == 'r')
2598: istrue = roff_hasregn(r, name, sz);
2599: else {
2600: deftype = ROFFDEF_ANY;
2601: roff_getstrn(r, name, sz, &deftype);
2602: istrue = !!deftype;
2603: }
1.235 schwarze 2604: *pos = (name + sz) - v;
1.182 schwarze 2605: return istrue == wanttrue;
1.5 schwarze 2606: default:
2607: break;
2608: }
2609:
1.113 schwarze 2610: savepos = *pos;
1.133 schwarze 2611: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2612: return (number > 0) == wanttrue;
1.113 schwarze 2613: else if (*pos == savepos)
1.149 schwarze 2614: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2615: else
1.149 schwarze 2616: return 0;
1.5 schwarze 2617: }
2618:
1.212 schwarze 2619: static int
1.21 schwarze 2620: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2621: {
1.30 schwarze 2622:
1.149 schwarze 2623: return ROFF_IGN;
1.21 schwarze 2624: }
2625:
1.212 schwarze 2626: static int
1.123 schwarze 2627: roff_insec(ROFF_ARGS)
2628: {
2629:
1.222 schwarze 2630: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2631: return ROFF_IGN;
1.123 schwarze 2632: }
2633:
1.212 schwarze 2634: static int
1.123 schwarze 2635: roff_unsupp(ROFF_ARGS)
2636: {
2637:
1.222 schwarze 2638: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2639: return ROFF_IGN;
1.123 schwarze 2640: }
2641:
1.212 schwarze 2642: static int
1.2 schwarze 2643: roff_cond(ROFF_ARGS)
2644: {
1.212 schwarze 2645: int irc;
1.46 schwarze 2646:
2647: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2648:
1.80 schwarze 2649: /*
1.35 schwarze 2650: * An `.el' has no conditional body: it will consume the value
2651: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2652: * defaults to DENY.
1.35 schwarze 2653: *
2654: * If we're not an `el', however, then evaluate the conditional.
2655: */
1.1 schwarze 2656:
1.110 schwarze 2657: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2658: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2659: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2660:
1.35 schwarze 2661: /*
2662: * An if-else will put the NEGATION of the current evaluated
2663: * conditional into the stack of rules.
2664: */
2665:
1.110 schwarze 2666: if (tok == ROFF_ie) {
1.96 schwarze 2667: if (r->rstackpos + 1 == r->rstacksz) {
2668: r->rstacksz += 16;
2669: r->rstack = mandoc_reallocarray(r->rstack,
2670: r->rstacksz, sizeof(int));
1.35 schwarze 2671: }
1.71 schwarze 2672: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2673: }
1.5 schwarze 2674:
2675: /* If the parent has false as its rule, then so do we. */
2676:
1.71 schwarze 2677: if (r->last->parent && !r->last->parent->rule)
2678: r->last->rule = 0;
1.5 schwarze 2679:
2680: /*
1.46 schwarze 2681: * Determine scope.
2682: * If there is nothing on the line after the conditional,
2683: * not even whitespace, use next-line scope.
1.212 schwarze 2684: * Except that .while does not support next-line scope.
1.5 schwarze 2685: */
1.2 schwarze 2686:
1.212 schwarze 2687: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.46 schwarze 2688: r->last->endspan = 2;
2689: goto out;
2690: }
2691:
1.110 schwarze 2692: while (buf->buf[pos] == ' ')
1.46 schwarze 2693: pos++;
2694:
2695: /* An opening brace requests multiline scope. */
1.2 schwarze 2696:
1.110 schwarze 2697: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2698: r->last->endspan = -1;
2699: pos += 2;
1.144 schwarze 2700: while (buf->buf[pos] == ' ')
2701: pos++;
1.46 schwarze 2702: goto out;
1.80 schwarze 2703: }
1.2 schwarze 2704:
2705: /*
1.46 schwarze 2706: * Anything else following the conditional causes
2707: * single-line scope. Warn if the scope contains
2708: * nothing but trailing whitespace.
1.2 schwarze 2709: */
2710:
1.110 schwarze 2711: if (buf->buf[pos] == '\0')
1.222 schwarze 2712: mandoc_msg(MANDOCERR_COND_EMPTY,
2713: ln, ppos, "%s", roff_name[tok]);
1.2 schwarze 2714:
1.46 schwarze 2715: r->last->endspan = 1;
1.1 schwarze 2716:
1.46 schwarze 2717: out:
1.2 schwarze 2718: *offs = pos;
1.212 schwarze 2719: irc = ROFF_RERUN;
2720: if (tok == ROFF_while)
2721: irc |= ROFF_WHILE;
2722: return irc;
1.1 schwarze 2723: }
2724:
1.212 schwarze 2725: static int
1.7 schwarze 2726: roff_ds(ROFF_ARGS)
2727: {
1.85 schwarze 2728: char *string;
2729: const char *name;
2730: size_t namesz;
1.10 schwarze 2731:
1.123 schwarze 2732: /* Ignore groff compatibility mode for now. */
2733:
2734: if (tok == ROFF_ds1)
2735: tok = ROFF_ds;
2736: else if (tok == ROFF_as1)
2737: tok = ROFF_as;
2738:
1.10 schwarze 2739: /*
1.85 schwarze 2740: * The first word is the name of the string.
2741: * If it is empty or terminated by an escape sequence,
2742: * abort the `ds' request without defining anything.
1.10 schwarze 2743: */
1.7 schwarze 2744:
1.110 schwarze 2745: name = string = buf->buf + pos;
2746: if (*name == '\0')
1.149 schwarze 2747: return ROFF_IGN;
1.7 schwarze 2748:
1.85 schwarze 2749: namesz = roff_getname(r, &string, ln, pos);
1.235 schwarze 2750: switch (name[namesz]) {
2751: case '\\':
1.149 schwarze 2752: return ROFF_IGN;
1.235 schwarze 2753: case '\t':
2754: string = buf->buf + pos + namesz;
2755: break;
2756: default:
2757: break;
2758: }
1.85 schwarze 2759:
2760: /* Read past the initial double-quote, if any. */
1.110 schwarze 2761: if (*string == '"')
1.7 schwarze 2762: string++;
2763:
1.10 schwarze 2764: /* The rest is the value. */
1.85 schwarze 2765: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2766: ROFF_as == tok);
1.183 schwarze 2767: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2768: return ROFF_IGN;
1.7 schwarze 2769: }
2770:
1.77 schwarze 2771: /*
2772: * Parse a single operator, one or two characters long.
2773: * If the operator is recognized, return success and advance the
2774: * parse point, else return failure and let the parse point unchanged.
2775: */
2776: static int
2777: roff_getop(const char *v, int *pos, char *res)
2778: {
2779:
2780: *res = v[*pos];
2781:
2782: switch (*res) {
1.80 schwarze 2783: case '+':
2784: case '-':
2785: case '*':
2786: case '/':
2787: case '%':
2788: case '&':
2789: case ':':
1.77 schwarze 2790: break;
2791: case '<':
2792: switch (v[*pos + 1]) {
1.80 schwarze 2793: case '=':
1.77 schwarze 2794: *res = 'l';
2795: (*pos)++;
2796: break;
1.80 schwarze 2797: case '>':
1.77 schwarze 2798: *res = '!';
2799: (*pos)++;
2800: break;
1.80 schwarze 2801: case '?':
1.77 schwarze 2802: *res = 'i';
2803: (*pos)++;
2804: break;
2805: default:
2806: break;
2807: }
2808: break;
2809: case '>':
2810: switch (v[*pos + 1]) {
1.80 schwarze 2811: case '=':
1.77 schwarze 2812: *res = 'g';
2813: (*pos)++;
2814: break;
1.80 schwarze 2815: case '?':
1.77 schwarze 2816: *res = 'a';
2817: (*pos)++;
2818: break;
2819: default:
2820: break;
2821: }
2822: break;
2823: case '=':
2824: if ('=' == v[*pos + 1])
2825: (*pos)++;
2826: break;
2827: default:
1.149 schwarze 2828: return 0;
1.77 schwarze 2829: }
2830: (*pos)++;
2831:
1.149 schwarze 2832: return *res;
1.77 schwarze 2833: }
2834:
2835: /*
2836: * Evaluate either a parenthesized numeric expression
2837: * or a single signed integer number.
2838: */
2839: static int
1.106 schwarze 2840: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2841: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2842: {
2843:
2844: if ('(' != v[*pos])
1.149 schwarze 2845: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2846:
2847: (*pos)++;
1.133 schwarze 2848: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2849: return 0;
1.77 schwarze 2850:
1.79 schwarze 2851: /*
2852: * Omission of the closing parenthesis
2853: * is an error in validation mode,
2854: * but ignored in evaluation mode.
2855: */
2856:
1.77 schwarze 2857: if (')' == v[*pos])
2858: (*pos)++;
1.79 schwarze 2859: else if (NULL == res)
1.149 schwarze 2860: return 0;
1.77 schwarze 2861:
1.149 schwarze 2862: return 1;
1.77 schwarze 2863: }
2864:
2865: /*
2866: * Evaluate a complete numeric expression.
2867: * Proceed left to right, there is no concept of precedence.
2868: */
2869: static int
1.106 schwarze 2870: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2871: int *pos, int *res, int flags)
1.77 schwarze 2872: {
2873: int mypos, operand2;
2874: char operator;
2875:
2876: if (NULL == pos) {
2877: mypos = 0;
2878: pos = &mypos;
2879: }
2880:
1.133 schwarze 2881: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2882: while (isspace((unsigned char)v[*pos]))
2883: (*pos)++;
2884:
1.133 schwarze 2885: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2886: return 0;
1.77 schwarze 2887:
2888: while (1) {
1.133 schwarze 2889: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2890: while (isspace((unsigned char)v[*pos]))
2891: (*pos)++;
2892:
2893: if ( ! roff_getop(v, pos, &operator))
2894: break;
2895:
1.133 schwarze 2896: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2897: while (isspace((unsigned char)v[*pos]))
2898: (*pos)++;
2899:
1.133 schwarze 2900: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2901: return 0;
1.77 schwarze 2902:
1.133 schwarze 2903: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2904: while (isspace((unsigned char)v[*pos]))
2905: (*pos)++;
1.79 schwarze 2906:
2907: if (NULL == res)
2908: continue;
1.77 schwarze 2909:
2910: switch (operator) {
1.80 schwarze 2911: case '+':
1.77 schwarze 2912: *res += operand2;
2913: break;
1.80 schwarze 2914: case '-':
1.77 schwarze 2915: *res -= operand2;
2916: break;
1.80 schwarze 2917: case '*':
1.77 schwarze 2918: *res *= operand2;
2919: break;
1.80 schwarze 2920: case '/':
1.116 schwarze 2921: if (operand2 == 0) {
1.106 schwarze 2922: mandoc_msg(MANDOCERR_DIVZERO,
1.222 schwarze 2923: ln, *pos, "%s", v);
1.106 schwarze 2924: *res = 0;
2925: break;
2926: }
1.77 schwarze 2927: *res /= operand2;
2928: break;
1.80 schwarze 2929: case '%':
1.116 schwarze 2930: if (operand2 == 0) {
2931: mandoc_msg(MANDOCERR_DIVZERO,
1.222 schwarze 2932: ln, *pos, "%s", v);
1.116 schwarze 2933: *res = 0;
2934: break;
2935: }
1.77 schwarze 2936: *res %= operand2;
2937: break;
1.80 schwarze 2938: case '<':
1.77 schwarze 2939: *res = *res < operand2;
2940: break;
1.80 schwarze 2941: case '>':
1.77 schwarze 2942: *res = *res > operand2;
2943: break;
1.80 schwarze 2944: case 'l':
1.77 schwarze 2945: *res = *res <= operand2;
2946: break;
1.80 schwarze 2947: case 'g':
1.77 schwarze 2948: *res = *res >= operand2;
2949: break;
1.80 schwarze 2950: case '=':
1.77 schwarze 2951: *res = *res == operand2;
2952: break;
1.80 schwarze 2953: case '!':
1.77 schwarze 2954: *res = *res != operand2;
2955: break;
1.80 schwarze 2956: case '&':
1.77 schwarze 2957: *res = *res && operand2;
2958: break;
1.80 schwarze 2959: case ':':
1.77 schwarze 2960: *res = *res || operand2;
2961: break;
1.80 schwarze 2962: case 'i':
1.77 schwarze 2963: if (operand2 < *res)
2964: *res = operand2;
2965: break;
1.80 schwarze 2966: case 'a':
1.77 schwarze 2967: if (operand2 > *res)
2968: *res = operand2;
2969: break;
2970: default:
2971: abort();
2972: }
2973: }
1.149 schwarze 2974: return 1;
1.77 schwarze 2975: }
2976:
1.138 schwarze 2977: /* --- register management ------------------------------------------------ */
2978:
1.52 schwarze 2979: void
1.60 schwarze 2980: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2981: {
1.199 schwarze 2982: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.198 schwarze 2983: }
2984:
2985: static void
2986: roff_setregn(struct roff *r, const char *name, size_t len,
1.199 schwarze 2987: int val, char sign, int step)
1.198 schwarze 2988: {
1.52 schwarze 2989: struct roffreg *reg;
2990:
2991: /* Search for an existing register with the same name. */
2992: reg = r->regtab;
2993:
1.198 schwarze 2994: while (reg != NULL && (reg->key.sz != len ||
2995: strncmp(reg->key.p, name, len) != 0))
1.52 schwarze 2996: reg = reg->next;
1.41 schwarze 2997:
1.52 schwarze 2998: if (NULL == reg) {
2999: /* Create a new register. */
3000: reg = mandoc_malloc(sizeof(struct roffreg));
1.198 schwarze 3001: reg->key.p = mandoc_strndup(name, len);
3002: reg->key.sz = len;
1.60 schwarze 3003: reg->val = 0;
1.199 schwarze 3004: reg->step = 0;
1.52 schwarze 3005: reg->next = r->regtab;
3006: r->regtab = reg;
3007: }
3008:
1.60 schwarze 3009: if ('+' == sign)
3010: reg->val += val;
3011: else if ('-' == sign)
3012: reg->val -= val;
3013: else
3014: reg->val = val;
1.199 schwarze 3015: if (step != INT_MIN)
3016: reg->step = step;
1.41 schwarze 3017: }
3018:
1.65 schwarze 3019: /*
3020: * Handle some predefined read-only number registers.
3021: * For now, return -1 if the requested register is not predefined;
3022: * in case a predefined read-only register having the value -1
3023: * were to turn up, another special value would have to be chosen.
3024: */
3025: static int
1.145 schwarze 3026: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 3027: {
3028:
3029: switch (*name) {
1.145 schwarze 3030: case '$': /* Number of arguments of the last macro evaluated. */
1.211 schwarze 3031: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.80 schwarze 3032: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 3033: return 0;
1.80 schwarze 3034: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 3035: return 1;
1.80 schwarze 3036: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 3037: return 24;
1.80 schwarze 3038: case 'j': /* Always adjust left margin only. */
1.149 schwarze 3039: return 0;
1.80 schwarze 3040: case 'T': /* Some output device is always defined. */
1.149 schwarze 3041: return 1;
1.80 schwarze 3042: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 3043: return 40;
1.65 schwarze 3044: default:
1.149 schwarze 3045: return -1;
1.65 schwarze 3046: }
3047: }
3048:
1.53 schwarze 3049: int
1.198 schwarze 3050: roff_getreg(struct roff *r, const char *name)
1.41 schwarze 3051: {
1.199 schwarze 3052: return roff_getregn(r, name, strlen(name), '\0');
1.53 schwarze 3053: }
3054:
3055: static int
1.199 schwarze 3056: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.53 schwarze 3057: {
3058: struct roffreg *reg;
1.65 schwarze 3059: int val;
3060:
3061: if ('.' == name[0] && 2 == len) {
1.145 schwarze 3062: val = roff_getregro(r, name + 1);
1.65 schwarze 3063: if (-1 != val)
1.149 schwarze 3064: return val;
1.65 schwarze 3065: }
1.53 schwarze 3066:
1.199 schwarze 3067: for (reg = r->regtab; reg; reg = reg->next) {
1.53 schwarze 3068: if (len == reg->key.sz &&
1.199 schwarze 3069: 0 == strncmp(name, reg->key.p, len)) {
3070: switch (sign) {
3071: case '+':
3072: reg->val += reg->step;
3073: break;
3074: case '-':
3075: reg->val -= reg->step;
3076: break;
3077: default:
3078: break;
3079: }
1.149 schwarze 3080: return reg->val;
1.199 schwarze 3081: }
3082: }
1.143 schwarze 3083:
1.199 schwarze 3084: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.149 schwarze 3085: return 0;
1.143 schwarze 3086: }
3087:
3088: static int
3089: roff_hasregn(const struct roff *r, const char *name, size_t len)
3090: {
3091: struct roffreg *reg;
3092: int val;
3093:
3094: if ('.' == name[0] && 2 == len) {
1.145 schwarze 3095: val = roff_getregro(r, name + 1);
1.143 schwarze 3096: if (-1 != val)
1.149 schwarze 3097: return 1;
1.143 schwarze 3098: }
3099:
3100: for (reg = r->regtab; reg; reg = reg->next)
3101: if (len == reg->key.sz &&
3102: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 3103: return 1;
1.41 schwarze 3104:
1.149 schwarze 3105: return 0;
1.41 schwarze 3106: }
3107:
1.52 schwarze 3108: static void
3109: roff_freereg(struct roffreg *reg)
1.41 schwarze 3110: {
1.52 schwarze 3111: struct roffreg *old_reg;
1.41 schwarze 3112:
1.52 schwarze 3113: while (NULL != reg) {
3114: free(reg->key.p);
3115: old_reg = reg;
3116: reg = reg->next;
3117: free(old_reg);
3118: }
1.41 schwarze 3119: }
1.7 schwarze 3120:
1.212 schwarze 3121: static int
1.6 schwarze 3122: roff_nr(ROFF_ARGS)
1.1 schwarze 3123: {
1.199 schwarze 3124: char *key, *val, *step;
1.85 schwarze 3125: size_t keysz;
1.199 schwarze 3126: int iv, is, len;
1.60 schwarze 3127: char sign;
1.6 schwarze 3128:
1.110 schwarze 3129: key = val = buf->buf + pos;
3130: if (*key == '\0')
1.149 schwarze 3131: return ROFF_IGN;
1.85 schwarze 3132:
3133: keysz = roff_getname(r, &val, ln, pos);
1.235 schwarze 3134: if (key[keysz] == '\\' || key[keysz] == '\t')
1.149 schwarze 3135: return ROFF_IGN;
1.6 schwarze 3136:
1.60 schwarze 3137: sign = *val;
1.110 schwarze 3138: if (sign == '+' || sign == '-')
1.60 schwarze 3139: val++;
3140:
1.199 schwarze 3141: len = 0;
3142: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3143: return ROFF_IGN;
3144:
3145: step = val + len;
3146: while (isspace((unsigned char)*step))
3147: step++;
3148: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3149: is = INT_MIN;
1.1 schwarze 3150:
1.199 schwarze 3151: roff_setregn(r, key, keysz, iv, sign, is);
1.149 schwarze 3152: return ROFF_IGN;
1.76 schwarze 3153: }
3154:
1.212 schwarze 3155: static int
1.76 schwarze 3156: roff_rr(ROFF_ARGS)
3157: {
3158: struct roffreg *reg, **prev;
1.85 schwarze 3159: char *name, *cp;
3160: size_t namesz;
1.76 schwarze 3161:
1.110 schwarze 3162: name = cp = buf->buf + pos;
3163: if (*name == '\0')
1.149 schwarze 3164: return ROFF_IGN;
1.85 schwarze 3165: namesz = roff_getname(r, &cp, ln, pos);
3166: name[namesz] = '\0';
1.76 schwarze 3167:
3168: prev = &r->regtab;
3169: while (1) {
3170: reg = *prev;
1.110 schwarze 3171: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 3172: break;
3173: prev = ®->next;
3174: }
1.110 schwarze 3175: if (reg != NULL) {
1.76 schwarze 3176: *prev = reg->next;
3177: free(reg->key.p);
3178: free(reg);
3179: }
1.149 schwarze 3180: return ROFF_IGN;
1.29 schwarze 3181: }
3182:
1.138 schwarze 3183: /* --- handler functions for roff requests -------------------------------- */
3184:
1.212 schwarze 3185: static int
1.29 schwarze 3186: roff_rm(ROFF_ARGS)
3187: {
3188: const char *name;
3189: char *cp;
1.85 schwarze 3190: size_t namesz;
1.29 schwarze 3191:
1.110 schwarze 3192: cp = buf->buf + pos;
3193: while (*cp != '\0') {
1.85 schwarze 3194: name = cp;
1.110 schwarze 3195: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 3196: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 3197: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.235 schwarze 3198: if (name[namesz] == '\\' || name[namesz] == '\t')
1.85 schwarze 3199: break;
1.29 schwarze 3200: }
1.149 schwarze 3201: return ROFF_IGN;
1.51 schwarze 3202: }
3203:
1.212 schwarze 3204: static int
1.51 schwarze 3205: roff_it(ROFF_ARGS)
3206: {
3207: int iv;
3208:
3209: /* Parse the number of lines. */
1.133 schwarze 3210:
3211: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 3212: mandoc_msg(MANDOCERR_IT_NONUM,
3213: ln, ppos, "%s", buf->buf + 1);
1.149 schwarze 3214: return ROFF_IGN;
1.51 schwarze 3215: }
3216:
1.134 schwarze 3217: while (isspace((unsigned char)buf->buf[pos]))
3218: pos++;
3219:
3220: /*
3221: * Arm the input line trap.
3222: * Special-casing "an-trap" is an ugly workaround to cope
3223: * with DocBook stupidly fiddling with man(7) internals.
3224: */
1.133 schwarze 3225:
1.51 schwarze 3226: roffit_lines = iv;
1.134 schwarze 3227: roffit_macro = mandoc_strdup(iv != 1 ||
3228: strcmp(buf->buf + pos, "an-trap") ?
3229: buf->buf + pos : "br");
1.149 schwarze 3230: return ROFF_IGN;
1.47 schwarze 3231: }
3232:
1.212 schwarze 3233: static int
1.47 schwarze 3234: roff_Dd(ROFF_ARGS)
3235: {
1.187 schwarze 3236: int mask;
3237: enum roff_tok t, te;
1.99 schwarze 3238:
1.187 schwarze 3239: switch (tok) {
3240: case ROFF_Dd:
3241: tok = MDOC_Dd;
3242: te = MDOC_MAX;
3243: if (r->format == 0)
3244: r->format = MPARSE_MDOC;
3245: mask = MPARSE_MDOC | MPARSE_QUICK;
3246: break;
3247: case ROFF_TH:
3248: tok = MAN_TH;
3249: te = MAN_MAX;
3250: if (r->format == 0)
3251: r->format = MPARSE_MAN;
3252: mask = MPARSE_QUICK;
3253: break;
3254: default:
3255: abort();
3256: }
3257: if ((r->options & mask) == 0)
3258: for (t = tok; t < te; t++)
3259: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 3260: return ROFF_CONT;
1.14 schwarze 3261: }
3262:
1.212 schwarze 3263: static int
1.27 schwarze 3264: roff_TE(ROFF_ARGS)
3265: {
1.233 schwarze 3266: r->man->flags &= ~ROFF_NONOFILL;
1.193 schwarze 3267: if (r->tbl == NULL) {
1.222 schwarze 3268: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.193 schwarze 3269: return ROFF_IGN;
3270: }
1.218 schwarze 3271: if (tbl_end(r->tbl, 0) == 0) {
1.193 schwarze 3272: r->tbl = NULL;
1.130 schwarze 3273: free(buf->buf);
3274: buf->buf = mandoc_strdup(".sp");
3275: buf->sz = 4;
1.201 schwarze 3276: *offs = 0;
1.149 schwarze 3277: return ROFF_REPARSE;
1.130 schwarze 3278: }
1.193 schwarze 3279: r->tbl = NULL;
1.149 schwarze 3280: return ROFF_IGN;
1.27 schwarze 3281: }
3282:
1.212 schwarze 3283: static int
1.27 schwarze 3284: roff_T_(ROFF_ARGS)
3285: {
3286:
3287: if (NULL == r->tbl)
1.222 schwarze 3288: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.27 schwarze 3289: else
1.168 schwarze 3290: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 3291:
1.149 schwarze 3292: return ROFF_IGN;
1.27 schwarze 3293: }
3294:
1.102 schwarze 3295: /*
3296: * Handle in-line equation delimiters.
3297: */
1.212 schwarze 3298: static int
1.110 schwarze 3299: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 3300: {
1.105 schwarze 3301: char *cp1, *cp2;
3302: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 3303:
1.102 schwarze 3304: /*
3305: * Outside equations, look for an opening delimiter.
3306: * If we are inside an equation, we already know it is
3307: * in-line, or this function wouldn't have been called;
3308: * so look for a closing delimiter.
3309: */
3310:
1.110 schwarze 3311: cp1 = buf->buf + pos;
1.102 schwarze 3312: cp2 = strchr(cp1, r->eqn == NULL ?
3313: r->last_eqn->odelim : r->last_eqn->cdelim);
3314: if (cp2 == NULL)
1.149 schwarze 3315: return ROFF_CONT;
1.102 schwarze 3316:
1.105 schwarze 3317: *cp2++ = '\0';
3318: bef_pr = bef_nl = aft_nl = aft_pr = "";
3319:
3320: /* Handle preceding text, protecting whitespace. */
3321:
1.110 schwarze 3322: if (*buf->buf != '\0') {
1.105 schwarze 3323: if (r->eqn == NULL)
3324: bef_pr = "\\&";
3325: bef_nl = "\n";
3326: }
3327:
3328: /*
3329: * Prepare replacing the delimiter with an equation macro
3330: * and drop leading white space from the equation.
3331: */
1.102 schwarze 3332:
1.105 schwarze 3333: if (r->eqn == NULL) {
3334: while (*cp2 == ' ')
3335: cp2++;
3336: mac = ".EQ";
3337: } else
3338: mac = ".EN";
3339:
3340: /* Handle following text, protecting whitespace. */
3341:
3342: if (*cp2 != '\0') {
3343: aft_nl = "\n";
3344: if (r->eqn != NULL)
3345: aft_pr = "\\&";
3346: }
3347:
3348: /* Do the actual replacement. */
3349:
1.110 schwarze 3350: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 3351: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 3352: free(buf->buf);
3353: buf->buf = cp1;
1.102 schwarze 3354:
3355: /* Toggle the in-line state of the eqn subsystem. */
3356:
3357: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 3358: return ROFF_REPARSE;
1.41 schwarze 3359: }
3360:
1.212 schwarze 3361: static int
1.107 schwarze 3362: roff_EQ(ROFF_ARGS)
1.32 schwarze 3363: {
1.191 schwarze 3364: struct roff_node *n;
3365:
1.228 schwarze 3366: if (r->man->meta.macroset == MACROSET_MAN)
1.194 schwarze 3367: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 3368: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3369: if (ln > r->man->last->line)
3370: n->flags |= NODE_LINE;
1.220 schwarze 3371: n->eqn = eqn_box_new();
1.191 schwarze 3372: roff_node_append(r->man, n);
3373: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 3374:
1.110 schwarze 3375: assert(r->eqn == NULL);
1.191 schwarze 3376: if (r->last_eqn == NULL)
1.223 schwarze 3377: r->last_eqn = eqn_alloc();
1.191 schwarze 3378: else
3379: eqn_reset(r->last_eqn);
3380: r->eqn = r->last_eqn;
3381: r->eqn->node = n;
1.41 schwarze 3382:
1.110 schwarze 3383: if (buf->buf[pos] != '\0')
1.222 schwarze 3384: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 3385: ".EQ %s", buf->buf + pos);
1.41 schwarze 3386:
1.149 schwarze 3387: return ROFF_IGN;
1.32 schwarze 3388: }
3389:
1.212 schwarze 3390: static int
1.32 schwarze 3391: roff_EN(ROFF_ARGS)
3392: {
1.191 schwarze 3393: if (r->eqn != NULL) {
3394: eqn_parse(r->eqn);
3395: r->eqn = NULL;
3396: } else
1.222 schwarze 3397: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.191 schwarze 3398: if (buf->buf[pos] != '\0')
1.222 schwarze 3399: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.191 schwarze 3400: "EN %s", buf->buf + pos);
1.149 schwarze 3401: return ROFF_IGN;
1.32 schwarze 3402: }
3403:
1.212 schwarze 3404: static int
1.27 schwarze 3405: roff_TS(ROFF_ARGS)
3406: {
1.193 schwarze 3407: if (r->tbl != NULL) {
1.222 schwarze 3408: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.218 schwarze 3409: tbl_end(r->tbl, 0);
1.27 schwarze 3410: }
1.233 schwarze 3411: r->man->flags |= ROFF_NONOFILL;
1.223 schwarze 3412: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.218 schwarze 3413: if (r->last_tbl == NULL)
1.193 schwarze 3414: r->first_tbl = r->tbl;
3415: r->last_tbl = r->tbl;
1.169 schwarze 3416: return ROFF_IGN;
3417: }
3418:
1.212 schwarze 3419: static int
1.230 schwarze 3420: roff_noarg(ROFF_ARGS)
3421: {
3422: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3423: man_breakscope(r->man, tok);
3424: if (tok == ROFF_brp)
3425: tok = ROFF_br;
3426: roff_elem_alloc(r->man, ln, ppos, tok);
3427: if (buf->buf[pos] != '\0')
3428: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3429: "%s %s", roff_name[tok], buf->buf + pos);
3430: if (tok == ROFF_nf)
3431: r->man->flags |= ROFF_NOFILL;
3432: else if (tok == ROFF_fi)
3433: r->man->flags &= ~ROFF_NOFILL;
3434: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3435: r->man->next = ROFF_NEXT_SIBLING;
3436: return ROFF_IGN;
3437: }
3438:
3439: static int
1.169 schwarze 3440: roff_onearg(ROFF_ARGS)
3441: {
3442: struct roff_node *n;
3443: char *cp;
1.177 schwarze 3444: int npos;
1.169 schwarze 3445:
1.174 schwarze 3446: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 3447: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3448: tok == ROFF_ti))
1.174 schwarze 3449: man_breakscope(r->man, tok);
3450:
1.181 schwarze 3451: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 3452: r->man->last = roffce_node;
3453: r->man->next = ROFF_NEXT_SIBLING;
3454: }
3455:
1.169 schwarze 3456: roff_elem_alloc(r->man, ln, ppos, tok);
3457: n = r->man->last;
3458:
3459: cp = buf->buf + pos;
3460: if (*cp != '\0') {
3461: while (*cp != '\0' && *cp != ' ')
3462: cp++;
3463: while (*cp == ' ')
3464: *cp++ = '\0';
3465: if (*cp != '\0')
1.222 schwarze 3466: mandoc_msg(MANDOCERR_ARG_EXCESS,
3467: ln, (int)(cp - buf->buf),
1.169 schwarze 3468: "%s ... %s", roff_name[tok], cp);
3469: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 3470: }
3471:
1.181 schwarze 3472: if (tok == ROFF_ce || tok == ROFF_rj) {
3473: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 3474: roff_word_alloc(r->man, ln, pos, "1");
3475: r->man->last->flags |= NODE_NOSRC;
3476: }
3477: npos = 0;
3478: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3479: &roffce_lines, 0) == 0) {
1.222 schwarze 3480: mandoc_msg(MANDOCERR_CE_NONUM,
3481: ln, pos, "ce %s", buf->buf + pos);
1.177 schwarze 3482: roffce_lines = 1;
3483: }
3484: if (roffce_lines < 1) {
3485: r->man->last = r->man->last->parent;
3486: roffce_node = NULL;
3487: roffce_lines = 0;
3488: } else
3489: roffce_node = r->man->last->parent;
3490: } else {
3491: n->flags |= NODE_VALID | NODE_ENDED;
3492: r->man->last = n;
3493: }
3494: n->flags |= NODE_LINE;
1.172 schwarze 3495: r->man->next = ROFF_NEXT_SIBLING;
3496: return ROFF_IGN;
3497: }
3498:
1.212 schwarze 3499: static int
1.172 schwarze 3500: roff_manyarg(ROFF_ARGS)
3501: {
3502: struct roff_node *n;
3503: char *sp, *ep;
3504:
3505: roff_elem_alloc(r->man, ln, ppos, tok);
3506: n = r->man->last;
3507:
3508: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3509: while (*ep != '\0' && *ep != ' ')
3510: ep++;
3511: while (*ep == ' ')
3512: *ep++ = '\0';
3513: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3514: }
3515:
3516: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3517: r->man->last = n;
3518: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3519: return ROFF_IGN;
1.123 schwarze 3520: }
3521:
1.212 schwarze 3522: static int
1.183 schwarze 3523: roff_als(ROFF_ARGS)
3524: {
3525: char *oldn, *newn, *end, *value;
3526: size_t oldsz, newsz, valsz;
3527:
3528: newn = oldn = buf->buf + pos;
3529: if (*newn == '\0')
3530: return ROFF_IGN;
3531:
3532: newsz = roff_getname(r, &oldn, ln, pos);
1.235 schwarze 3533: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.183 schwarze 3534: return ROFF_IGN;
3535:
3536: end = oldn;
3537: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3538: if (oldsz == 0)
3539: return ROFF_IGN;
3540:
1.210 schwarze 3541: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.187 schwarze 3542: (int)oldsz, oldn);
1.183 schwarze 3543: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3544: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3545: free(value);
1.236 schwarze 3546: return ROFF_IGN;
3547: }
3548:
3549: /*
3550: * The .break request only makes sense inside conditionals,
3551: * and that case is already handled in roff_cond_sub().
3552: */
3553: static int
3554: roff_break(ROFF_ARGS)
3555: {
3556: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.168 schwarze 3557: return ROFF_IGN;
1.27 schwarze 3558: }
3559:
1.212 schwarze 3560: static int
1.48 schwarze 3561: roff_cc(ROFF_ARGS)
3562: {
3563: const char *p;
3564:
1.110 schwarze 3565: p = buf->buf + pos;
1.48 schwarze 3566:
1.110 schwarze 3567: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3568: r->control = '\0';
1.48 schwarze 3569:
1.110 schwarze 3570: if (*p != '\0')
1.222 schwarze 3571: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.132 schwarze 3572: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3573:
1.213 schwarze 3574: return ROFF_IGN;
3575: }
3576:
3577: static int
3578: roff_char(ROFF_ARGS)
3579: {
3580: const char *p, *kp, *vp;
3581: size_t ksz, vsz;
3582: int font;
3583:
3584: /* Parse the character to be replaced. */
3585:
3586: kp = buf->buf + pos;
3587: p = kp + 1;
3588: if (*kp == '\0' || (*kp == '\\' &&
3589: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3590: (*p != ' ' && *p != '\0')) {
1.222 schwarze 3591: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.213 schwarze 3592: return ROFF_IGN;
3593: }
3594: ksz = p - kp;
3595: while (*p == ' ')
3596: p++;
3597:
3598: /*
3599: * If the replacement string contains a font escape sequence,
3600: * we have to restore the font at the end.
3601: */
3602:
3603: vp = p;
3604: vsz = strlen(p);
3605: font = 0;
3606: while (*p != '\0') {
3607: if (*p++ != '\\')
3608: continue;
3609: switch (mandoc_escape(&p, NULL, NULL)) {
3610: case ESCAPE_FONT:
3611: case ESCAPE_FONTROMAN:
3612: case ESCAPE_FONTITALIC:
3613: case ESCAPE_FONTBOLD:
3614: case ESCAPE_FONTBI:
1.250 schwarze 3615: case ESCAPE_FONTCR:
3616: case ESCAPE_FONTCB:
3617: case ESCAPE_FONTCI:
1.213 schwarze 3618: case ESCAPE_FONTPREV:
3619: font++;
3620: break;
3621: default:
3622: break;
3623: }
3624: }
3625: if (font > 1)
1.222 schwarze 3626: mandoc_msg(MANDOCERR_CHAR_FONT,
3627: ln, (int)(vp - buf->buf), "%s", vp);
1.213 schwarze 3628:
3629: /*
3630: * Approximate the effect of .char using the .tr tables.
3631: * XXX In groff, .char and .tr interact differently.
3632: */
3633:
3634: if (ksz == 1) {
3635: if (r->xtab == NULL)
3636: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3637: assert((unsigned int)*kp < 128);
3638: free(r->xtab[(int)*kp].p);
3639: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3640: "%s%s", vp, font ? "\fP" : "");
3641: } else {
3642: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3643: if (font)
3644: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3645: }
1.149 schwarze 3646: return ROFF_IGN;
1.48 schwarze 3647: }
3648:
1.212 schwarze 3649: static int
1.175 schwarze 3650: roff_ec(ROFF_ARGS)
3651: {
3652: const char *p;
3653:
3654: p = buf->buf + pos;
3655: if (*p == '\0')
3656: r->escape = '\\';
3657: else {
3658: r->escape = *p;
3659: if (*++p != '\0')
1.222 schwarze 3660: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3661: (int)(p - buf->buf), "ec ... %s", p);
1.175 schwarze 3662: }
3663: return ROFF_IGN;
3664: }
3665:
1.212 schwarze 3666: static int
1.175 schwarze 3667: roff_eo(ROFF_ARGS)
3668: {
3669: r->escape = '\0';
3670: if (buf->buf[pos] != '\0')
1.222 schwarze 3671: mandoc_msg(MANDOCERR_ARG_SKIP,
1.175 schwarze 3672: ln, pos, "eo %s", buf->buf + pos);
1.256 schwarze 3673: return ROFF_IGN;
3674: }
3675:
3676: static int
3677: roff_mc(ROFF_ARGS)
3678: {
3679: struct roff_node *n;
3680: char *cp;
3681:
3682: /* Parse the first argument. */
3683:
3684: cp = buf->buf + pos;
3685: if (*cp != '\0')
3686: cp++;
3687: if (buf->buf[pos] == '\\') {
3688: switch (mandoc_escape((const char **)&cp, NULL, NULL)) {
3689: case ESCAPE_SPECIAL:
3690: case ESCAPE_UNICODE:
3691: case ESCAPE_NUMBERED:
3692: break;
3693: default:
3694: *cp = '\0';
3695: mandoc_msg(MANDOCERR_MC_ESC, ln, pos,
3696: "mc %s", buf->buf + pos);
3697: buf->buf[pos] = '\0';
3698: break;
3699: }
3700: }
3701:
3702: /* Ignore additional arguments. */
3703:
3704: while (*cp == ' ')
3705: *cp++ = '\0';
3706: if (*cp != '\0') {
3707: mandoc_msg(MANDOCERR_MC_DIST, ln, (int)(cp - buf->buf),
3708: "mc ... %s", cp);
3709: *cp = '\0';
3710: }
3711:
3712: /* Create the .mc node. */
3713:
3714: roff_elem_alloc(r->man, ln, ppos, tok);
3715: n = r->man->last;
3716: if (buf->buf[pos] != '\0')
3717: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
3718: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3719: r->man->last = n;
3720: r->man->next = ROFF_NEXT_SIBLING;
1.175 schwarze 3721: return ROFF_IGN;
1.202 schwarze 3722: }
3723:
1.212 schwarze 3724: static int
1.202 schwarze 3725: roff_nop(ROFF_ARGS)
3726: {
3727: while (buf->buf[pos] == ' ')
3728: pos++;
3729: *offs = pos;
3730: return ROFF_RERUN;
1.175 schwarze 3731: }
3732:
1.212 schwarze 3733: static int
1.42 schwarze 3734: roff_tr(ROFF_ARGS)
3735: {
3736: const char *p, *first, *second;
3737: size_t fsz, ssz;
3738:
1.110 schwarze 3739: p = buf->buf + pos;
1.42 schwarze 3740:
1.110 schwarze 3741: if (*p == '\0') {
1.222 schwarze 3742: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.149 schwarze 3743: return ROFF_IGN;
1.42 schwarze 3744: }
3745:
1.110 schwarze 3746: while (*p != '\0') {
1.42 schwarze 3747: fsz = ssz = 1;
3748:
3749: first = p++;
1.110 schwarze 3750: if (*first == '\\') {
1.266 schwarze 3751: if (mandoc_escape(&p, NULL, NULL) == ESCAPE_ERROR)
1.149 schwarze 3752: return ROFF_IGN;
1.42 schwarze 3753: fsz = (size_t)(p - first);
3754: }
3755:
3756: second = p++;
1.110 schwarze 3757: if (*second == '\\') {
1.266 schwarze 3758: if (mandoc_escape(&p, NULL, NULL) == ESCAPE_ERROR)
1.149 schwarze 3759: return ROFF_IGN;
1.42 schwarze 3760: ssz = (size_t)(p - second);
1.110 schwarze 3761: } else if (*second == '\0') {
1.222 schwarze 3762: mandoc_msg(MANDOCERR_TR_ODD, ln,
3763: (int)(first - buf->buf), "tr %s", first);
1.42 schwarze 3764: second = " ";
3765: p--;
3766: }
3767:
3768: if (fsz > 1) {
1.80 schwarze 3769: roff_setstrn(&r->xmbtab, first, fsz,
3770: second, ssz, 0);
1.42 schwarze 3771: continue;
3772: }
3773:
1.110 schwarze 3774: if (r->xtab == NULL)
1.80 schwarze 3775: r->xtab = mandoc_calloc(128,
3776: sizeof(struct roffstr));
1.42 schwarze 3777:
3778: free(r->xtab[(int)*first].p);
3779: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3780: r->xtab[(int)*first].sz = ssz;
3781: }
3782:
1.149 schwarze 3783: return ROFF_IGN;
1.42 schwarze 3784: }
3785:
1.211 schwarze 3786: /*
3787: * Implementation of the .return request.
3788: * There is no need to call roff_userret() from here.
3789: * The read module will call that after rewinding the reader stack
3790: * to the place from where the current macro was called.
3791: */
1.212 schwarze 3792: static int
1.211 schwarze 3793: roff_return(ROFF_ARGS)
3794: {
3795: if (r->mstackpos >= 0)
1.212 schwarze 3796: return ROFF_IGN | ROFF_USERRET;
1.211 schwarze 3797:
1.222 schwarze 3798: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.211 schwarze 3799: return ROFF_IGN;
3800: }
3801:
1.212 schwarze 3802: static int
1.178 schwarze 3803: roff_rn(ROFF_ARGS)
3804: {
3805: const char *value;
3806: char *oldn, *newn, *end;
3807: size_t oldsz, newsz;
1.187 schwarze 3808: int deftype;
1.178 schwarze 3809:
3810: oldn = newn = buf->buf + pos;
3811: if (*oldn == '\0')
3812: return ROFF_IGN;
3813:
3814: oldsz = roff_getname(r, &newn, ln, pos);
1.235 schwarze 3815: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.178 schwarze 3816: return ROFF_IGN;
3817:
3818: end = newn;
3819: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3820: if (newsz == 0)
3821: return ROFF_IGN;
3822:
1.187 schwarze 3823: deftype = ROFFDEF_ANY;
3824: value = roff_getstrn(r, oldn, oldsz, &deftype);
3825: switch (deftype) {
3826: case ROFFDEF_USER:
1.178 schwarze 3827: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3828: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3829: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3830: break;
3831: case ROFFDEF_PRE:
3832: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3833: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3834: break;
3835: case ROFFDEF_REN:
1.178 schwarze 3836: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3837: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3838: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3839: break;
3840: case ROFFDEF_STD:
1.178 schwarze 3841: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3842: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3843: break;
3844: default:
3845: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3846: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3847: break;
3848: }
1.178 schwarze 3849: return ROFF_IGN;
3850: }
3851:
1.212 schwarze 3852: static int
1.211 schwarze 3853: roff_shift(ROFF_ARGS)
3854: {
3855: struct mctx *ctx;
1.254 schwarze 3856: int argpos, levels, i;
1.211 schwarze 3857:
1.254 schwarze 3858: argpos = pos;
1.211 schwarze 3859: levels = 1;
3860: if (buf->buf[pos] != '\0' &&
3861: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.222 schwarze 3862: mandoc_msg(MANDOCERR_CE_NONUM,
1.211 schwarze 3863: ln, pos, "shift %s", buf->buf + pos);
3864: levels = 1;
3865: }
3866: if (r->mstackpos < 0) {
1.222 schwarze 3867: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.211 schwarze 3868: return ROFF_IGN;
3869: }
3870: ctx = r->mstack + r->mstackpos;
3871: if (levels > ctx->argc) {
1.222 schwarze 3872: mandoc_msg(MANDOCERR_SHIFT,
1.254 schwarze 3873: ln, argpos, "%d, but max is %d", levels, ctx->argc);
1.211 schwarze 3874: levels = ctx->argc;
1.254 schwarze 3875: }
3876: if (levels < 0) {
3877: mandoc_msg(MANDOCERR_ARG_NEG, ln, argpos, "shift %d", levels);
3878: levels = 0;
1.211 schwarze 3879: }
3880: if (levels == 0)
3881: return ROFF_IGN;
3882: for (i = 0; i < levels; i++)
3883: free(ctx->argv[i]);
3884: ctx->argc -= levels;
3885: for (i = 0; i < ctx->argc; i++)
3886: ctx->argv[i] = ctx->argv[i + levels];
3887: return ROFF_IGN;
3888: }
3889:
1.212 schwarze 3890: static int
1.14 schwarze 3891: roff_so(ROFF_ARGS)
3892: {
1.121 schwarze 3893: char *name, *cp;
1.15 schwarze 3894:
1.110 schwarze 3895: name = buf->buf + pos;
1.222 schwarze 3896: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.14 schwarze 3897:
1.22 schwarze 3898: /*
3899: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3900: * opening anything that's not in our cwd or anything beneath
3901: * it. Thus, explicitly disallow traversing up the file-system
3902: * or using absolute paths.
3903: */
3904:
1.110 schwarze 3905: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.222 schwarze 3906: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.121 schwarze 3907: buf->sz = mandoc_asprintf(&cp,
3908: ".sp\nSee the file %s.\n.sp", name) + 1;
3909: free(buf->buf);
3910: buf->buf = cp;
3911: *offs = 0;
1.149 schwarze 3912: return ROFF_REPARSE;
1.14 schwarze 3913: }
3914:
3915: *offs = pos;
1.149 schwarze 3916: return ROFF_SO;
1.7 schwarze 3917: }
3918:
1.138 schwarze 3919: /* --- user defined strings and macros ------------------------------------ */
3920:
1.212 schwarze 3921: static int
1.16 schwarze 3922: roff_userdef(ROFF_ARGS)
1.12 schwarze 3923: {
1.211 schwarze 3924: struct mctx *ctx;
3925: char *arg, *ap, *dst, *src;
3926: size_t sz;
3927:
1.237 schwarze 3928: /* If the macro is empty, ignore it altogether. */
3929:
3930: if (*r->current_string == '\0')
3931: return ROFF_IGN;
3932:
1.211 schwarze 3933: /* Initialize a new macro stack context. */
3934:
3935: if (++r->mstackpos == r->mstacksz) {
3936: r->mstack = mandoc_recallocarray(r->mstack,
3937: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3938: r->mstacksz += 8;
3939: }
3940: ctx = r->mstack + r->mstackpos;
3941: ctx->argc = 0;
3942:
3943: /*
3944: * Collect pointers to macro argument strings,
3945: * NUL-terminating them and escaping quotes.
3946: */
3947:
3948: src = buf->buf + pos;
3949: while (*src != '\0') {
3950: if (ctx->argc == ctx->argsz) {
3951: ctx->argsz += 8;
3952: ctx->argv = mandoc_reallocarray(ctx->argv,
3953: ctx->argsz, sizeof(*ctx->argv));
3954: }
1.227 schwarze 3955: arg = roff_getarg(r, &src, ln, &pos);
1.211 schwarze 3956: sz = 1; /* For the terminating NUL. */
3957: for (ap = arg; *ap != '\0'; ap++)
3958: sz += *ap == '"' ? 4 : 1;
3959: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3960: for (ap = arg; *ap != '\0'; ap++) {
3961: if (*ap == '"') {
3962: memcpy(dst, "\\(dq", 4);
3963: dst += 4;
3964: } else
3965: *dst++ = *ap;
1.16 schwarze 3966: }
1.211 schwarze 3967: *dst = '\0';
1.227 schwarze 3968: free(arg);
1.209 schwarze 3969: }
3970:
1.211 schwarze 3971: /* Replace the macro invocation by the macro definition. */
1.135 schwarze 3972:
1.110 schwarze 3973: free(buf->buf);
1.211 schwarze 3974: buf->buf = mandoc_strdup(r->current_string);
3975: buf->sz = strlen(buf->buf) + 1;
1.120 schwarze 3976: *offs = 0;
1.16 schwarze 3977:
1.237 schwarze 3978: return buf->buf[buf->sz - 2] == '\n' ?
1.212 schwarze 3979: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.12 schwarze 3980: }
1.28 schwarze 3981:
1.178 schwarze 3982: /*
3983: * Calling a high-level macro that was renamed with .rn.
3984: * r->current_string has already been set up by roff_parse().
3985: */
1.212 schwarze 3986: static int
1.178 schwarze 3987: roff_renamed(ROFF_ARGS)
3988: {
3989: char *nbuf;
3990:
1.187 schwarze 3991: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3992: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3993: free(buf->buf);
3994: buf->buf = nbuf;
1.201 schwarze 3995: *offs = 0;
1.178 schwarze 3996: return ROFF_CONT;
3997: }
3998:
1.234 schwarze 3999: /*
4000: * Measure the length in bytes of the roff identifier at *cpp
4001: * and advance the pointer to the next word.
4002: */
1.85 schwarze 4003: static size_t
1.28 schwarze 4004: roff_getname(struct roff *r, char **cpp, int ln, int pos)
4005: {
4006: char *name, *cp;
1.265 schwarze 4007: int namesz, inam, iend;
1.28 schwarze 4008:
4009: name = *cpp;
1.234 schwarze 4010: if (*name == '\0')
1.149 schwarze 4011: return 0;
1.28 schwarze 4012:
1.234 schwarze 4013: /* Advance cp to the byte after the end of the name. */
4014:
1.265 schwarze 4015: cp = name;
4016: namesz = 0;
4017: for (;;) {
1.235 schwarze 4018: if (*cp == '\0')
1.85 schwarze 4019: break;
1.235 schwarze 4020: if (*cp == ' ' || *cp == '\t') {
4021: cp++;
4022: break;
4023: }
1.265 schwarze 4024: if (*cp != '\\') {
4025: if (name + namesz < cp) {
4026: name[namesz] = *cp;
4027: *cp = ' ';
4028: }
4029: namesz++;
4030: cp++;
1.28 schwarze 4031: continue;
1.265 schwarze 4032: }
1.234 schwarze 4033: if (cp[1] == '{' || cp[1] == '}')
1.88 schwarze 4034: break;
1.265 schwarze 4035: if (roff_escape(cp, 0, 0, NULL, &inam,
4036: NULL, NULL, &iend) != ESCAPE_UNDEF) {
4037: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
4038: "%.*s%.*s", namesz, name, iend, cp);
4039: cp += iend;
4040: break;
4041: }
4042:
4043: /*
4044: * In an identifier, \\, \., \G and so on
4045: * are reduced to \, ., G and so on,
4046: * vaguely similar to copy mode.
4047: */
4048:
4049: name[namesz++] = cp[inam];
4050: while (iend--) {
4051: if (cp >= name + namesz)
4052: *cp = ' ';
4053: cp++;
4054: }
1.28 schwarze 4055: }
4056:
4057: /* Read past spaces. */
1.234 schwarze 4058:
4059: while (*cp == ' ')
1.28 schwarze 4060: cp++;
4061:
4062: *cpp = cp;
1.149 schwarze 4063: return namesz;
1.28 schwarze 4064: }
4065:
1.16 schwarze 4066: /*
4067: * Store *string into the user-defined string called *name.
4068: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 4069: * append == 0: replace mode
4070: * append == 1: single-line append mode
4071: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 4072: */
1.8 schwarze 4073: static void
1.16 schwarze 4074: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 4075: int append)
1.7 schwarze 4076: {
1.187 schwarze 4077: size_t namesz;
1.42 schwarze 4078:
1.187 schwarze 4079: namesz = strlen(name);
4080: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 4081: string ? strlen(string) : 0, append);
1.187 schwarze 4082: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 4083: }
4084:
4085: static void
4086: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 4087: const char *string, size_t stringsz, int append)
1.42 schwarze 4088: {
4089: struct roffkv *n;
4090: char *c;
4091: int i;
4092: size_t oldch, newch;
1.7 schwarze 4093:
1.16 schwarze 4094: /* Search for an existing string with the same name. */
1.42 schwarze 4095: n = *r;
4096:
1.84 schwarze 4097: while (n && (namesz != n->key.sz ||
4098: strncmp(n->key.p, name, namesz)))
1.7 schwarze 4099: n = n->next;
1.8 schwarze 4100:
4101: if (NULL == n) {
1.16 schwarze 4102: /* Create a new string table entry. */
1.42 schwarze 4103: n = mandoc_malloc(sizeof(struct roffkv));
4104: n->key.p = mandoc_strndup(name, namesz);
4105: n->key.sz = namesz;
4106: n->val.p = NULL;
4107: n->val.sz = 0;
4108: n->next = *r;
4109: *r = n;
1.66 schwarze 4110: } else if (0 == append) {
1.42 schwarze 4111: free(n->val.p);
4112: n->val.p = NULL;
4113: n->val.sz = 0;
1.16 schwarze 4114: }
4115:
4116: if (NULL == string)
4117: return;
4118:
4119: /*
4120: * One additional byte for the '\n' in multiline mode,
4121: * and one for the terminating '\0'.
4122: */
1.66 schwarze 4123: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 4124:
4125: if (NULL == n->val.p) {
4126: n->val.p = mandoc_malloc(newch);
4127: *n->val.p = '\0';
1.16 schwarze 4128: oldch = 0;
4129: } else {
1.42 schwarze 4130: oldch = n->val.sz;
4131: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 4132: }
4133:
4134: /* Skip existing content in the destination buffer. */
1.42 schwarze 4135: c = n->val.p + (int)oldch;
1.16 schwarze 4136:
4137: /* Append new content to the destination buffer. */
1.42 schwarze 4138: i = 0;
4139: while (i < (int)stringsz) {
1.16 schwarze 4140: /*
4141: * Rudimentary roff copy mode:
4142: * Handle escaped backslashes.
4143: */
1.42 schwarze 4144: if ('\\' == string[i] && '\\' == string[i + 1])
4145: i++;
4146: *c++ = string[i++];
1.16 schwarze 4147: }
1.8 schwarze 4148:
1.16 schwarze 4149: /* Append terminating bytes. */
1.66 schwarze 4150: if (1 < append)
1.16 schwarze 4151: *c++ = '\n';
1.42 schwarze 4152:
1.16 schwarze 4153: *c = '\0';
1.42 schwarze 4154: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 4155: }
4156:
1.8 schwarze 4157: static const char *
1.197 schwarze 4158: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 4159: int *deftype)
1.7 schwarze 4160: {
1.187 schwarze 4161: const struct roffkv *n;
1.197 schwarze 4162: int found, i;
1.187 schwarze 4163: enum roff_tok tok;
4164:
1.197 schwarze 4165: found = 0;
4166: for (n = r->strtab; n != NULL; n = n->next) {
4167: if (strncmp(name, n->key.p, len) != 0 ||
4168: n->key.p[len] != '\0' || n->val.p == NULL)
4169: continue;
4170: if (*deftype & ROFFDEF_USER) {
4171: *deftype = ROFFDEF_USER;
4172: return n->val.p;
4173: } else {
4174: found = 1;
4175: break;
4176: }
4177: }
4178: for (n = r->rentab; n != NULL; n = n->next) {
4179: if (strncmp(name, n->key.p, len) != 0 ||
4180: n->key.p[len] != '\0' || n->val.p == NULL)
4181: continue;
4182: if (*deftype & ROFFDEF_REN) {
4183: *deftype = ROFFDEF_REN;
4184: return n->val.p;
4185: } else {
4186: found = 1;
4187: break;
1.187 schwarze 4188: }
4189: }
1.197 schwarze 4190: for (i = 0; i < PREDEFS_MAX; i++) {
4191: if (strncmp(name, predefs[i].name, len) != 0 ||
4192: predefs[i].name[len] != '\0')
4193: continue;
4194: if (*deftype & ROFFDEF_PRE) {
4195: *deftype = ROFFDEF_PRE;
4196: return predefs[i].str;
4197: } else {
4198: found = 1;
4199: break;
1.187 schwarze 4200: }
4201: }
1.228 schwarze 4202: if (r->man->meta.macroset != MACROSET_MAN) {
1.197 schwarze 4203: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4204: if (strncmp(name, roff_name[tok], len) != 0 ||
4205: roff_name[tok][len] != '\0')
4206: continue;
4207: if (*deftype & ROFFDEF_STD) {
4208: *deftype = ROFFDEF_STD;
4209: return NULL;
4210: } else {
4211: found = 1;
4212: break;
1.187 schwarze 4213: }
4214: }
4215: }
1.228 schwarze 4216: if (r->man->meta.macroset != MACROSET_MDOC) {
1.197 schwarze 4217: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4218: if (strncmp(name, roff_name[tok], len) != 0 ||
4219: roff_name[tok][len] != '\0')
4220: continue;
4221: if (*deftype & ROFFDEF_STD) {
4222: *deftype = ROFFDEF_STD;
4223: return NULL;
4224: } else {
4225: found = 1;
4226: break;
1.187 schwarze 4227: }
4228: }
1.197 schwarze 4229: }
4230:
4231: if (found == 0 && *deftype != ROFFDEF_ANY) {
4232: if (*deftype & ROFFDEF_REN) {
4233: /*
4234: * This might still be a request,
4235: * so do not treat it as undefined yet.
4236: */
4237: *deftype = ROFFDEF_UNDEF;
4238: return NULL;
1.187 schwarze 4239: }
1.197 schwarze 4240:
4241: /* Using an undefined string defines it to be empty. */
4242:
4243: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4244: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 4245: }
1.197 schwarze 4246:
1.187 schwarze 4247: *deftype = 0;
1.149 schwarze 4248: return NULL;
1.7 schwarze 4249: }
4250:
1.8 schwarze 4251: static void
1.42 schwarze 4252: roff_freestr(struct roffkv *r)
1.7 schwarze 4253: {
1.42 schwarze 4254: struct roffkv *n, *nn;
1.7 schwarze 4255:
1.42 schwarze 4256: for (n = r; n; n = nn) {
4257: free(n->key.p);
4258: free(n->val.p);
1.7 schwarze 4259: nn = n->next;
4260: free(n);
4261: }
1.27 schwarze 4262: }
1.138 schwarze 4263:
4264: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 4265:
4266: /*
4267: * Duplicate an input string, making the appropriate character
4268: * conversations (as stipulated by `tr') along the way.
4269: * Returns a heap-allocated string with all the replacements made.
4270: */
4271: char *
4272: roff_strdup(const struct roff *r, const char *p)
4273: {
4274: const struct roffkv *cp;
4275: char *res;
4276: const char *pp;
4277: size_t ssz, sz;
4278: enum mandoc_esc esc;
4279:
4280: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 4281: return mandoc_strdup(p);
1.42 schwarze 4282: else if ('\0' == *p)
1.149 schwarze 4283: return mandoc_strdup("");
1.42 schwarze 4284:
4285: /*
4286: * Step through each character looking for term matches
4287: * (remember that a `tr' can be invoked with an escape, which is
4288: * a glyph but the escape is multi-character).
4289: * We only do this if the character hash has been initialised
4290: * and the string is >0 length.
4291: */
4292:
4293: res = NULL;
4294: ssz = 0;
4295:
4296: while ('\0' != *p) {
1.161 schwarze 4297: assert((unsigned int)*p < 128);
4298: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 4299: sz = r->xtab[(int)*p].sz;
4300: res = mandoc_realloc(res, ssz + sz + 1);
4301: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4302: ssz += sz;
4303: p++;
4304: continue;
4305: } else if ('\\' != *p) {
4306: res = mandoc_realloc(res, ssz + 2);
4307: res[ssz++] = *p++;
4308: continue;
4309: }
4310:
4311: /* Search for term matches. */
4312: for (cp = r->xmbtab; cp; cp = cp->next)
4313: if (0 == strncmp(p, cp->key.p, cp->key.sz))
4314: break;
4315:
4316: if (NULL != cp) {
4317: /*
4318: * A match has been found.
4319: * Append the match to the array and move
4320: * forward by its keysize.
4321: */
1.80 schwarze 4322: res = mandoc_realloc(res,
4323: ssz + cp->val.sz + 1);
1.42 schwarze 4324: memcpy(res + ssz, cp->val.p, cp->val.sz);
4325: ssz += cp->val.sz;
4326: p += (int)cp->key.sz;
4327: continue;
4328: }
4329:
4330: /*
4331: * Handle escapes carefully: we need to copy
4332: * over just the escape itself, or else we might
4333: * do replacements within the escape itself.
4334: * Make sure to pass along the bogus string.
4335: */
4336: pp = p++;
4337: esc = mandoc_escape(&p, NULL, NULL);
4338: if (ESCAPE_ERROR == esc) {
4339: sz = strlen(pp);
4340: res = mandoc_realloc(res, ssz + sz + 1);
4341: memcpy(res + ssz, pp, sz);
4342: break;
4343: }
1.80 schwarze 4344: /*
4345: * We bail out on bad escapes.
1.42 schwarze 4346: * No need to warn: we already did so when
1.227 schwarze 4347: * roff_expand() was called.
1.42 schwarze 4348: */
4349: sz = (int)(p - pp);
4350: res = mandoc_realloc(res, ssz + sz + 1);
4351: memcpy(res + ssz, pp, sz);
4352: ssz += sz;
4353: }
4354:
4355: res[(int)ssz] = '\0';
1.149 schwarze 4356: return res;
1.99 schwarze 4357: }
4358:
4359: int
4360: roff_getformat(const struct roff *r)
4361: {
4362:
1.149 schwarze 4363: return r->format;
1.48 schwarze 4364: }
4365:
4366: /*
1.80 schwarze 4367: * Find out whether a line is a macro line or not.
1.48 schwarze 4368: * If it is, adjust the current position and return one; if it isn't,
4369: * return zero and don't change the current position.
4370: * If the control character has been set with `.cc', then let that grain
4371: * precedence.
4372: * This is slighly contrary to groff, where using the non-breaking
4373: * control character when `cc' has been invoked will cause the
4374: * non-breaking macro contents to be printed verbatim.
4375: */
4376: int
4377: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4378: {
4379: int pos;
4380:
4381: pos = *ppos;
4382:
1.175 schwarze 4383: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 4384: pos++;
1.175 schwarze 4385: else if (r->control != '\0')
1.149 schwarze 4386: return 0;
1.48 schwarze 4387: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4388: pos += 2;
4389: else if ('.' == cp[pos] || '\'' == cp[pos])
4390: pos++;
4391: else
1.149 schwarze 4392: return 0;
1.48 schwarze 4393:
4394: while (' ' == cp[pos] || '\t' == cp[pos])
4395: pos++;
4396:
4397: *ppos = pos;
1.149 schwarze 4398: return 1;
1.1 schwarze 4399: }
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