Annotation of src/usr.bin/mandoc/roff.c, Revision 1.242
1.242 ! schwarze 1: /* $OpenBSD: roff.c,v 1.241 2020/01/19 17:59:01 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.241 schwarze 4: * Copyright (c) 2010-2015, 2017-2020 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.167 schwarze 23: #include <stddef.h>
24: #include <stdint.h>
1.51 schwarze 25: #include <stdio.h>
1.1 schwarze 26: #include <stdlib.h>
27: #include <string.h>
28:
1.74 schwarze 29: #include "mandoc_aux.h"
1.167 schwarze 30: #include "mandoc_ohash.h"
1.217 schwarze 31: #include "mandoc.h"
1.137 schwarze 32: #include "roff.h"
1.221 schwarze 33: #include "mandoc_parse.h"
1.98 daniel 34: #include "libmandoc.h"
1.138 schwarze 35: #include "roff_int.h"
1.218 schwarze 36: #include "tbl_parse.h"
1.219 schwarze 37: #include "eqn_parse.h"
1.2 schwarze 38:
1.227 schwarze 39: /*
40: * ASCII_ESC is used to signal from roff_getarg() to roff_expand()
41: * that an escape sequence resulted from copy-in processing and
42: * needs to be checked or interpolated. As it is used nowhere
43: * else, it is defined here rather than in a header file.
44: */
45: #define ASCII_ESC 27
46:
1.43 schwarze 47: /* Maximum number of string expansions per line, to break infinite loops. */
48: #define EXPAND_LIMIT 1000
49:
1.187 schwarze 50: /* Types of definitions of macros and strings. */
51: #define ROFFDEF_USER (1 << 1) /* User-defined. */
52: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
53: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
54: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
55: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
56: ROFFDEF_REN | ROFFDEF_STD)
1.197 schwarze 57: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.187 schwarze 58:
1.138 schwarze 59: /* --- data types --------------------------------------------------------- */
60:
1.41 schwarze 61: /*
1.42 schwarze 62: * An incredibly-simple string buffer.
63: */
1.8 schwarze 64: struct roffstr {
1.42 schwarze 65: char *p; /* nil-terminated buffer */
66: size_t sz; /* saved strlen(p) */
67: };
68:
69: /*
70: * A key-value roffstr pair as part of a singly-linked list.
71: */
72: struct roffkv {
73: struct roffstr key;
74: struct roffstr val;
75: struct roffkv *next; /* next in list */
1.8 schwarze 76: };
77:
1.52 schwarze 78: /*
79: * A single number register as part of a singly-linked list.
80: */
81: struct roffreg {
82: struct roffstr key;
1.53 schwarze 83: int val;
1.199 schwarze 84: int step;
1.52 schwarze 85: struct roffreg *next;
86: };
87:
1.167 schwarze 88: /*
89: * Association of request and macro names with token IDs.
90: */
91: struct roffreq {
92: enum roff_tok tok;
93: char name[];
94: };
95:
1.211 schwarze 96: /*
97: * A macro processing context.
98: * More than one is needed when macro calls are nested.
99: */
100: struct mctx {
101: char **argv;
102: int argc;
103: int argsz;
104: };
105:
1.1 schwarze 106: struct roff {
1.168 schwarze 107: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 108: struct roffnode *last; /* leaf of stack */
1.211 schwarze 109: struct mctx *mstack; /* stack of macro contexts */
1.96 schwarze 110: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 111: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 112: struct roffreg *regtab; /* number registers */
1.42 schwarze 113: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 114: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 115: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
116: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 117: const char *current_string; /* value of last called user macro */
1.27 schwarze 118: struct tbl_node *first_tbl; /* first table parsed */
119: struct tbl_node *last_tbl; /* last table parsed */
120: struct tbl_node *tbl; /* current table being parsed */
1.191 schwarze 121: struct eqn_node *last_eqn; /* equation parser */
122: struct eqn_node *eqn; /* active equation parser */
1.102 schwarze 123: int eqn_inline; /* current equation is inline */
1.96 schwarze 124: int options; /* parse options */
1.211 schwarze 125: int mstacksz; /* current size of mstack */
126: int mstackpos; /* position in mstack */
1.96 schwarze 127: int rstacksz; /* current size limit of rstack */
128: int rstackpos; /* position in rstack */
1.99 schwarze 129: int format; /* current file in mdoc or man format */
1.96 schwarze 130: char control; /* control character */
1.175 schwarze 131: char escape; /* escape character */
1.1 schwarze 132: };
133:
1.236 schwarze 134: /*
135: * A macro definition, condition, or ignored block.
136: */
1.1 schwarze 137: struct roffnode {
1.166 schwarze 138: enum roff_tok tok; /* type of node */
1.1 schwarze 139: struct roffnode *parent; /* up one in stack */
140: int line; /* parse line */
141: int col; /* parse col */
1.16 schwarze 142: char *name; /* node name, e.g. macro name */
1.236 schwarze 143: char *end; /* custom end macro of the block */
144: int endspan; /* scope to: 1=eol 2=next line -1=\} */
145: int rule; /* content is: 1=evaluated 0=skipped */
1.1 schwarze 146: };
147:
148: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 149: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 150: struct buf *buf, /* input buffer */ \
1.1 schwarze 151: int ln, /* parse line */ \
1.2 schwarze 152: int ppos, /* original pos in buffer */ \
153: int pos, /* current pos in buffer */ \
154: int *offs /* reset offset of buffer data */
1.1 schwarze 155:
1.212 schwarze 156: typedef int (*roffproc)(ROFF_ARGS);
1.1 schwarze 157:
158: struct roffmac {
1.2 schwarze 159: roffproc proc; /* process new macro */
160: roffproc text; /* process as child text of macro */
161: roffproc sub; /* process as child of macro */
162: int flags;
163: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 164: };
165:
1.37 schwarze 166: struct predef {
167: const char *name; /* predefined input name */
168: const char *str; /* replacement symbol */
169: };
170:
171: #define PREDEF(__name, __str) \
172: { (__name), (__str) },
173:
1.138 schwarze 174: /* --- function prototypes ------------------------------------------------ */
175:
1.212 schwarze 176: static int roffnode_cleanscope(struct roff *);
177: static int roffnode_pop(struct roff *);
1.166 schwarze 178: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 179: const char *, int, int);
1.218 schwarze 180: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.212 schwarze 181: static int roff_als(ROFF_ARGS);
182: static int roff_block(ROFF_ARGS);
183: static int roff_block_text(ROFF_ARGS);
184: static int roff_block_sub(ROFF_ARGS);
1.236 schwarze 185: static int roff_break(ROFF_ARGS);
1.212 schwarze 186: static int roff_cblock(ROFF_ARGS);
187: static int roff_cc(ROFF_ARGS);
188: static int roff_ccond(struct roff *, int, int);
1.213 schwarze 189: static int roff_char(ROFF_ARGS);
1.212 schwarze 190: static int roff_cond(ROFF_ARGS);
191: static int roff_cond_text(ROFF_ARGS);
192: static int roff_cond_sub(ROFF_ARGS);
193: static int roff_ds(ROFF_ARGS);
194: static int roff_ec(ROFF_ARGS);
195: static int roff_eo(ROFF_ARGS);
196: static int roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 197: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 198: static int roff_evalnum(struct roff *, int,
199: const char *, int *, int *, int);
200: static int roff_evalpar(struct roff *, int,
1.133 schwarze 201: const char *, int *, int *, int);
1.71 schwarze 202: static int roff_evalstrcond(const char *, int *);
1.227 schwarze 203: static int roff_expand(struct roff *, struct buf *,
204: int, int, char);
1.42 schwarze 205: static void roff_free1(struct roff *);
1.52 schwarze 206: static void roff_freereg(struct roffreg *);
1.42 schwarze 207: static void roff_freestr(struct roffkv *);
1.85 schwarze 208: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 209: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 210: static int roff_getop(const char *, int *, char *);
1.199 schwarze 211: static int roff_getregn(struct roff *,
212: const char *, size_t, char);
1.145 schwarze 213: static int roff_getregro(const struct roff *,
214: const char *name);
1.197 schwarze 215: static const char *roff_getstrn(struct roff *,
1.187 schwarze 216: const char *, size_t, int *);
1.143 schwarze 217: static int roff_hasregn(const struct roff *,
218: const char *, size_t);
1.212 schwarze 219: static int roff_insec(ROFF_ARGS);
220: static int roff_it(ROFF_ARGS);
221: static int roff_line_ignore(ROFF_ARGS);
1.137 schwarze 222: static void roff_man_alloc1(struct roff_man *);
223: static void roff_man_free1(struct roff_man *);
1.212 schwarze 224: static int roff_manyarg(ROFF_ARGS);
1.230 schwarze 225: static int roff_noarg(ROFF_ARGS);
1.212 schwarze 226: static int roff_nop(ROFF_ARGS);
227: static int roff_nr(ROFF_ARGS);
228: static int roff_onearg(ROFF_ARGS);
1.166 schwarze 229: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 230: int, int);
1.212 schwarze 231: static int roff_parsetext(struct roff *, struct buf *,
1.177 schwarze 232: int, int *);
1.212 schwarze 233: static int roff_renamed(ROFF_ARGS);
234: static int roff_return(ROFF_ARGS);
235: static int roff_rm(ROFF_ARGS);
236: static int roff_rn(ROFF_ARGS);
237: static int roff_rr(ROFF_ARGS);
1.198 schwarze 238: static void roff_setregn(struct roff *, const char *,
1.199 schwarze 239: size_t, int, char, int);
1.8 schwarze 240: static void roff_setstr(struct roff *,
1.16 schwarze 241: const char *, const char *, int);
1.80 schwarze 242: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 243: size_t, const char *, size_t, int);
1.212 schwarze 244: static int roff_shift(ROFF_ARGS);
245: static int roff_so(ROFF_ARGS);
246: static int roff_tr(ROFF_ARGS);
247: static int roff_Dd(ROFF_ARGS);
248: static int roff_TE(ROFF_ARGS);
249: static int roff_TS(ROFF_ARGS);
250: static int roff_EQ(ROFF_ARGS);
251: static int roff_EN(ROFF_ARGS);
252: static int roff_T_(ROFF_ARGS);
253: static int roff_unsupp(ROFF_ARGS);
254: static int roff_userdef(ROFF_ARGS);
1.1 schwarze 255:
1.138 schwarze 256: /* --- constant data ------------------------------------------------------ */
257:
1.133 schwarze 258: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
259: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
260:
1.166 schwarze 261: const char *__roff_name[MAN_MAX + 1] = {
1.230 schwarze 262: "br", "ce", "fi", "ft",
263: "ll", "mc", "nf",
264: "po", "rj", "sp",
1.184 schwarze 265: "ta", "ti", NULL,
1.166 schwarze 266: "ab", "ad", "af", "aln",
267: "als", "am", "am1", "ami",
268: "ami1", "as", "as1", "asciify",
269: "backtrace", "bd", "bleedat", "blm",
270: "box", "boxa", "bp", "BP",
271: "break", "breakchar", "brnl", "brp",
1.177 schwarze 272: "brpnl", "c2", "cc",
1.166 schwarze 273: "cf", "cflags", "ch", "char",
274: "chop", "class", "close", "CL",
275: "color", "composite", "continue", "cp",
276: "cropat", "cs", "cu", "da",
277: "dch", "Dd", "de", "de1",
278: "defcolor", "dei", "dei1", "device",
279: "devicem", "di", "do", "ds",
280: "ds1", "dwh", "dt", "ec",
281: "ecr", "ecs", "el", "em",
282: "EN", "eo", "EP", "EQ",
283: "errprint", "ev", "evc", "ex",
284: "fallback", "fam", "fc", "fchar",
285: "fcolor", "fdeferlig", "feature", "fkern",
286: "fl", "flig", "fp", "fps",
287: "fschar", "fspacewidth", "fspecial", "ftr",
288: "fzoom", "gcolor", "hc", "hcode",
289: "hidechar", "hla", "hlm", "hpf",
290: "hpfa", "hpfcode", "hw", "hy",
291: "hylang", "hylen", "hym", "hypp",
292: "hys", "ie", "if", "ig",
293: "index", "it", "itc", "IX",
294: "kern", "kernafter", "kernbefore", "kernpair",
295: "lc", "lc_ctype", "lds", "length",
296: "letadj", "lf", "lg", "lhang",
297: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 298: "ls", "lsm", "lt",
1.166 schwarze 299: "mediasize", "minss", "mk", "mso",
300: "na", "ne", "nh", "nhychar",
301: "nm", "nn", "nop", "nr",
302: "nrf", "nroff", "ns", "nx",
303: "open", "opena", "os", "output",
304: "padj", "papersize", "pc", "pev",
305: "pi", "PI", "pl", "pm",
1.184 schwarze 306: "pn", "pnr", "ps",
1.166 schwarze 307: "psbb", "pshape", "pso", "ptr",
308: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 309: "return", "rfschar", "rhang",
1.166 schwarze 310: "rm", "rn", "rnn", "rr",
311: "rs", "rt", "schar", "sentchar",
312: "shc", "shift", "sizes", "so",
313: "spacewidth", "special", "spreadwarn", "ss",
314: "sty", "substring", "sv", "sy",
1.172 schwarze 315: "T&", "tc", "TE",
1.173 schwarze 316: "TH", "tkf", "tl",
1.166 schwarze 317: "tm", "tm1", "tmc", "tr",
318: "track", "transchar", "trf", "trimat",
319: "trin", "trnt", "troff", "TS",
320: "uf", "ul", "unformat", "unwatch",
321: "unwatchn", "vpt", "vs", "warn",
322: "warnscale", "watch", "watchlength", "watchn",
323: "wh", "while", "write", "writec",
324: "writem", "xflag", ".", NULL,
1.178 schwarze 325: NULL, "text",
1.166 schwarze 326: "Dd", "Dt", "Os", "Sh",
327: "Ss", "Pp", "D1", "Dl",
328: "Bd", "Ed", "Bl", "El",
329: "It", "Ad", "An", "Ap",
330: "Ar", "Cd", "Cm", "Dv",
331: "Er", "Ev", "Ex", "Fa",
332: "Fd", "Fl", "Fn", "Ft",
333: "Ic", "In", "Li", "Nd",
334: "Nm", "Op", "Ot", "Pa",
335: "Rv", "St", "Va", "Vt",
336: "Xr", "%A", "%B", "%D",
337: "%I", "%J", "%N", "%O",
338: "%P", "%R", "%T", "%V",
339: "Ac", "Ao", "Aq", "At",
340: "Bc", "Bf", "Bo", "Bq",
341: "Bsx", "Bx", "Db", "Dc",
342: "Do", "Dq", "Ec", "Ef",
343: "Em", "Eo", "Fx", "Ms",
344: "No", "Ns", "Nx", "Ox",
345: "Pc", "Pf", "Po", "Pq",
346: "Qc", "Ql", "Qo", "Qq",
347: "Re", "Rs", "Sc", "So",
348: "Sq", "Sm", "Sx", "Sy",
349: "Tn", "Ux", "Xc", "Xo",
350: "Fo", "Fc", "Oo", "Oc",
351: "Bk", "Ek", "Bt", "Hf",
352: "Fr", "Ud", "Lb", "Lp",
353: "Lk", "Mt", "Brq", "Bro",
354: "Brc", "%C", "Es", "En",
1.171 schwarze 355: "Dx", "%Q", "%U", "Ta",
1.241 schwarze 356: "Tg", NULL,
1.166 schwarze 357: "TH", "SH", "SS", "TP",
1.204 schwarze 358: "TQ",
1.166 schwarze 359: "LP", "PP", "P", "IP",
360: "HP", "SM", "SB", "BI",
361: "IB", "BR", "RB", "R",
362: "B", "I", "IR", "RI",
363: "RE", "RS", "DT", "UC",
1.169 schwarze 364: "PD", "AT", "in",
1.205 schwarze 365: "SY", "YS", "OP",
366: "EX", "EE", "UR",
1.189 bentley 367: "UE", "MT", "ME", NULL
1.166 schwarze 368: };
369: const char *const *roff_name = __roff_name;
370:
371: static struct roffmac roffs[TOKEN_NONE] = {
1.230 schwarze 372: { roff_noarg, NULL, NULL, 0 }, /* br */
1.177 schwarze 373: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.230 schwarze 374: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.169 schwarze 375: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 376: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 377: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.230 schwarze 378: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.184 schwarze 379: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 380: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 381: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 382: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 383: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 384: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 385: { roff_unsupp, NULL, NULL, 0 }, /* ab */
386: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
387: { roff_line_ignore, NULL, NULL, 0 }, /* af */
388: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 389: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 390: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
391: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
392: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
393: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
394: { roff_ds, NULL, NULL, 0 }, /* as */
395: { roff_ds, NULL, NULL, 0 }, /* as1 */
396: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
397: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
398: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
399: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
400: { roff_unsupp, NULL, NULL, 0 }, /* blm */
401: { roff_unsupp, NULL, NULL, 0 }, /* box */
402: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
403: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
404: { roff_unsupp, NULL, NULL, 0 }, /* BP */
1.236 schwarze 405: { roff_break, NULL, NULL, 0 }, /* break */
1.167 schwarze 406: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
407: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.230 schwarze 408: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.167 schwarze 409: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
410: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
411: { roff_cc, NULL, NULL, 0 }, /* cc */
412: { roff_insec, NULL, NULL, 0 }, /* cf */
413: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
414: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.213 schwarze 415: { roff_char, NULL, NULL, 0 }, /* char */
1.167 schwarze 416: { roff_unsupp, NULL, NULL, 0 }, /* chop */
417: { roff_line_ignore, NULL, NULL, 0 }, /* class */
418: { roff_insec, NULL, NULL, 0 }, /* close */
419: { roff_unsupp, NULL, NULL, 0 }, /* CL */
420: { roff_line_ignore, NULL, NULL, 0 }, /* color */
421: { roff_unsupp, NULL, NULL, 0 }, /* composite */
422: { roff_unsupp, NULL, NULL, 0 }, /* continue */
423: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
424: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
425: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
426: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
427: { roff_unsupp, NULL, NULL, 0 }, /* da */
428: { roff_unsupp, NULL, NULL, 0 }, /* dch */
429: { roff_Dd, NULL, NULL, 0 }, /* Dd */
430: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
431: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
432: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
433: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
434: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
435: { roff_unsupp, NULL, NULL, 0 }, /* device */
436: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
437: { roff_unsupp, NULL, NULL, 0 }, /* di */
438: { roff_unsupp, NULL, NULL, 0 }, /* do */
439: { roff_ds, NULL, NULL, 0 }, /* ds */
440: { roff_ds, NULL, NULL, 0 }, /* ds1 */
441: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
442: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 443: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 444: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
445: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
446: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
447: { roff_unsupp, NULL, NULL, 0 }, /* em */
448: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 449: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 450: { roff_unsupp, NULL, NULL, 0 }, /* EP */
451: { roff_EQ, NULL, NULL, 0 }, /* EQ */
452: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
453: { roff_unsupp, NULL, NULL, 0 }, /* ev */
454: { roff_unsupp, NULL, NULL, 0 }, /* evc */
455: { roff_unsupp, NULL, NULL, 0 }, /* ex */
456: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
457: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
458: { roff_unsupp, NULL, NULL, 0 }, /* fc */
459: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
460: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
461: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
462: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
463: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
464: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
465: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
466: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
467: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
468: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
469: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
470: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
471: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
472: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
473: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
474: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
475: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
476: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
477: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
478: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
479: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
480: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
481: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
482: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
483: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
484: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
485: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
486: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
487: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
488: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
489: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
490: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
491: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
492: { roff_unsupp, NULL, NULL, 0 }, /* index */
493: { roff_it, NULL, NULL, 0 }, /* it */
494: { roff_unsupp, NULL, NULL, 0 }, /* itc */
495: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
496: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
497: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
498: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
499: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
500: { roff_unsupp, NULL, NULL, 0 }, /* lc */
501: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
502: { roff_unsupp, NULL, NULL, 0 }, /* lds */
503: { roff_unsupp, NULL, NULL, 0 }, /* length */
504: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
505: { roff_insec, NULL, NULL, 0 }, /* lf */
506: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
507: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
508: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
509: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
510: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
511: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
512: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
513: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
514: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
515: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
516: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
517: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
518: { roff_insec, NULL, NULL, 0 }, /* mso */
519: { roff_line_ignore, NULL, NULL, 0 }, /* na */
520: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
521: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
522: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
523: { roff_unsupp, NULL, NULL, 0 }, /* nm */
524: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.202 schwarze 525: { roff_nop, NULL, NULL, 0 }, /* nop */
1.167 schwarze 526: { roff_nr, NULL, NULL, 0 }, /* nr */
527: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
528: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
529: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
530: { roff_insec, NULL, NULL, 0 }, /* nx */
531: { roff_insec, NULL, NULL, 0 }, /* open */
532: { roff_insec, NULL, NULL, 0 }, /* opena */
533: { roff_line_ignore, NULL, NULL, 0 }, /* os */
534: { roff_unsupp, NULL, NULL, 0 }, /* output */
535: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
536: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
537: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
538: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
539: { roff_insec, NULL, NULL, 0 }, /* pi */
540: { roff_unsupp, NULL, NULL, 0 }, /* PI */
541: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
542: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
543: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
544: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
545: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
546: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
547: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
548: { roff_insec, NULL, NULL, 0 }, /* pso */
549: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
550: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
551: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
552: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
553: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.211 schwarze 554: { roff_return, NULL, NULL, 0 }, /* return */
1.167 schwarze 555: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
556: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
557: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 558: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 559: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
560: { roff_rr, NULL, NULL, 0 }, /* rr */
561: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
562: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
563: { roff_unsupp, NULL, NULL, 0 }, /* schar */
564: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
565: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.211 schwarze 566: { roff_shift, NULL, NULL, 0 }, /* shift */
1.167 schwarze 567: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
568: { roff_so, NULL, NULL, 0 }, /* so */
569: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
570: { roff_line_ignore, NULL, NULL, 0 }, /* special */
571: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
572: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
573: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
574: { roff_unsupp, NULL, NULL, 0 }, /* substring */
575: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
576: { roff_insec, NULL, NULL, 0 }, /* sy */
577: { roff_T_, NULL, NULL, 0 }, /* T& */
578: { roff_unsupp, NULL, NULL, 0 }, /* tc */
579: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 580: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 581: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
582: { roff_unsupp, NULL, NULL, 0 }, /* tl */
583: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
584: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
585: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
586: { roff_tr, NULL, NULL, 0 }, /* tr */
587: { roff_line_ignore, NULL, NULL, 0 }, /* track */
588: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
589: { roff_insec, NULL, NULL, 0 }, /* trf */
590: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
591: { roff_unsupp, NULL, NULL, 0 }, /* trin */
592: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
593: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
594: { roff_TS, NULL, NULL, 0 }, /* TS */
595: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
596: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
597: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
598: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
599: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
600: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
601: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
602: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
603: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
604: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
605: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
606: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
607: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.212 schwarze 608: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.167 schwarze 609: { roff_insec, NULL, NULL, 0 }, /* write */
610: { roff_insec, NULL, NULL, 0 }, /* writec */
611: { roff_insec, NULL, NULL, 0 }, /* writem */
612: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
613: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 614: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 615: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 616: };
617:
1.37 schwarze 618: /* Array of injected predefined strings. */
619: #define PREDEFS_MAX 38
620: static const struct predef predefs[PREDEFS_MAX] = {
621: #include "predefs.in"
622: };
623:
1.177 schwarze 624: static int roffce_lines; /* number of input lines to center */
625: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 626: static int roffit_lines; /* number of lines to delay */
627: static char *roffit_macro; /* nil-terminated macro line */
628:
1.80 schwarze 629:
1.138 schwarze 630: /* --- request table ------------------------------------------------------ */
631:
1.167 schwarze 632: struct ohash *
633: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 634: {
1.167 schwarze 635: struct ohash *htab;
636: struct roffreq *req;
637: enum roff_tok tok;
638: size_t sz;
639: unsigned int slot;
1.3 schwarze 640:
1.167 schwarze 641: htab = mandoc_malloc(sizeof(*htab));
642: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 643:
1.167 schwarze 644: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 645: if (roff_name[tok] == NULL)
646: continue;
1.167 schwarze 647: sz = strlen(roff_name[tok]);
648: req = mandoc_malloc(sizeof(*req) + sz + 1);
649: req->tok = tok;
650: memcpy(req->name, roff_name[tok], sz + 1);
651: slot = ohash_qlookup(htab, req->name);
652: ohash_insert(htab, slot, req);
1.3 schwarze 653: }
1.167 schwarze 654: return htab;
1.3 schwarze 655: }
656:
1.167 schwarze 657: void
658: roffhash_free(struct ohash *htab)
1.1 schwarze 659: {
1.167 schwarze 660: struct roffreq *req;
661: unsigned int slot;
1.1 schwarze 662:
1.167 schwarze 663: if (htab == NULL)
664: return;
665: for (req = ohash_first(htab, &slot); req != NULL;
666: req = ohash_next(htab, &slot))
667: free(req);
668: ohash_delete(htab);
669: free(htab);
670: }
671:
672: enum roff_tok
673: roffhash_find(struct ohash *htab, const char *name, size_t sz)
674: {
675: struct roffreq *req;
676: const char *end;
677:
678: if (sz) {
679: end = name + sz;
680: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
681: } else
682: req = ohash_find(htab, ohash_qlookup(htab, name));
683: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 684: }
685:
1.138 schwarze 686: /* --- stack of request blocks -------------------------------------------- */
687:
1.1 schwarze 688: /*
689: * Pop the current node off of the stack of roff instructions currently
1.236 schwarze 690: * pending. Return 1 if it is a loop or 0 otherwise.
1.1 schwarze 691: */
1.212 schwarze 692: static int
1.1 schwarze 693: roffnode_pop(struct roff *r)
694: {
695: struct roffnode *p;
1.212 schwarze 696: int inloop;
1.1 schwarze 697:
1.80 schwarze 698: p = r->last;
1.212 schwarze 699: inloop = p->tok == ROFF_while;
700: r->last = p->parent;
1.16 schwarze 701: free(p->name);
702: free(p->end);
1.1 schwarze 703: free(p);
1.212 schwarze 704: return inloop;
1.1 schwarze 705: }
706:
707: /*
708: * Push a roff node onto the instruction stack. This must later be
709: * removed with roffnode_pop().
710: */
1.11 schwarze 711: static void
1.166 schwarze 712: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 713: int line, int col)
1.1 schwarze 714: {
715: struct roffnode *p;
716:
1.11 schwarze 717: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 718: p->tok = tok;
1.16 schwarze 719: if (name)
720: p->name = mandoc_strdup(name);
1.1 schwarze 721: p->parent = r->last;
722: p->line = line;
723: p->col = col;
1.71 schwarze 724: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 725:
726: r->last = p;
727: }
728:
1.138 schwarze 729: /* --- roff parser state data management ---------------------------------- */
730:
1.1 schwarze 731: static void
732: roff_free1(struct roff *r)
733: {
1.42 schwarze 734: int i;
1.27 schwarze 735:
1.218 schwarze 736: tbl_free(r->first_tbl);
1.27 schwarze 737: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 738:
1.219 schwarze 739: eqn_free(r->last_eqn);
1.191 schwarze 740: r->last_eqn = r->eqn = NULL;
1.32 schwarze 741:
1.211 schwarze 742: while (r->mstackpos >= 0)
743: roff_userret(r);
744:
1.1 schwarze 745: while (r->last)
746: roffnode_pop(r);
1.27 schwarze 747:
1.96 schwarze 748: free (r->rstack);
749: r->rstack = NULL;
750: r->rstacksz = 0;
751: r->rstackpos = -1;
752:
753: roff_freereg(r->regtab);
754: r->regtab = NULL;
755:
1.42 schwarze 756: roff_freestr(r->strtab);
1.178 schwarze 757: roff_freestr(r->rentab);
1.42 schwarze 758: roff_freestr(r->xmbtab);
1.178 schwarze 759: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 760:
761: if (r->xtab)
762: for (i = 0; i < 128; i++)
763: free(r->xtab[i].p);
764: free(r->xtab);
765: r->xtab = NULL;
1.1 schwarze 766: }
767:
768: void
769: roff_reset(struct roff *r)
770: {
771: roff_free1(r);
1.239 schwarze 772: r->options |= MPARSE_COMMENT;
1.99 schwarze 773: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 774: r->control = '\0';
775: r->escape = '\\';
1.179 schwarze 776: roffce_lines = 0;
777: roffce_node = NULL;
778: roffit_lines = 0;
779: roffit_macro = NULL;
1.1 schwarze 780: }
781:
782: void
783: roff_free(struct roff *r)
784: {
1.238 schwarze 785: int i;
1.211 schwarze 786:
1.1 schwarze 787: roff_free1(r);
1.211 schwarze 788: for (i = 0; i < r->mstacksz; i++)
789: free(r->mstack[i].argv);
790: free(r->mstack);
1.167 schwarze 791: roffhash_free(r->reqtab);
1.1 schwarze 792: free(r);
793: }
794:
795: struct roff *
1.223 schwarze 796: roff_alloc(int options)
1.1 schwarze 797: {
798: struct roff *r;
799:
1.11 schwarze 800: r = mandoc_calloc(1, sizeof(struct roff));
1.200 schwarze 801: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.239 schwarze 802: r->options = options | MPARSE_COMMENT;
1.99 schwarze 803: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.211 schwarze 804: r->mstackpos = -1;
1.2 schwarze 805: r->rstackpos = -1;
1.175 schwarze 806: r->escape = '\\';
1.149 schwarze 807: return r;
1.137 schwarze 808: }
809:
1.138 schwarze 810: /* --- syntax tree state data management ---------------------------------- */
811:
1.137 schwarze 812: static void
813: roff_man_free1(struct roff_man *man)
814: {
1.228 schwarze 815: if (man->meta.first != NULL)
816: roff_node_delete(man, man->meta.first);
1.137 schwarze 817: free(man->meta.msec);
818: free(man->meta.vol);
819: free(man->meta.os);
820: free(man->meta.arch);
821: free(man->meta.title);
822: free(man->meta.name);
823: free(man->meta.date);
1.228 schwarze 824: free(man->meta.sodest);
1.137 schwarze 825: }
826:
1.229 schwarze 827: void
828: roff_state_reset(struct roff_man *man)
829: {
830: man->last = man->meta.first;
831: man->last_es = NULL;
832: man->flags = 0;
833: man->lastsec = man->lastnamed = SEC_NONE;
834: man->next = ROFF_NEXT_CHILD;
835: roff_setreg(man->roff, "nS", 0, '=');
836: }
837:
1.137 schwarze 838: static void
839: roff_man_alloc1(struct roff_man *man)
840: {
841: memset(&man->meta, 0, sizeof(man->meta));
1.228 schwarze 842: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
843: man->meta.first->type = ROFFT_ROOT;
844: man->meta.macroset = MACROSET_NONE;
1.229 schwarze 845: roff_state_reset(man);
1.137 schwarze 846: }
847:
848: void
849: roff_man_reset(struct roff_man *man)
850: {
851: roff_man_free1(man);
852: roff_man_alloc1(man);
853: }
854:
855: void
856: roff_man_free(struct roff_man *man)
857: {
858: roff_man_free1(man);
859: free(man);
860: }
861:
862: struct roff_man *
1.223 schwarze 863: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.137 schwarze 864: {
865: struct roff_man *man;
866:
867: man = mandoc_calloc(1, sizeof(*man));
868: man->roff = roff;
1.188 schwarze 869: man->os_s = os_s;
1.137 schwarze 870: man->quick = quick;
871: roff_man_alloc1(man);
1.168 schwarze 872: roff->man = man;
1.149 schwarze 873: return man;
1.1 schwarze 874: }
875:
1.138 schwarze 876: /* --- syntax tree handling ----------------------------------------------- */
877:
878: struct roff_node *
879: roff_node_alloc(struct roff_man *man, int line, int pos,
880: enum roff_type type, int tok)
881: {
882: struct roff_node *n;
883:
884: n = mandoc_calloc(1, sizeof(*n));
885: n->line = line;
886: n->pos = pos;
887: n->tok = tok;
888: n->type = type;
889: n->sec = man->lastsec;
890:
891: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 892: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 893: else
1.157 schwarze 894: n->flags &= ~NODE_SYNPRETTY;
1.232 schwarze 895: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.231 schwarze 896: n->flags |= NODE_NOFILL;
897: else
898: n->flags &= ~NODE_NOFILL;
1.138 schwarze 899: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 900: n->flags |= NODE_LINE;
1.138 schwarze 901: man->flags &= ~MDOC_NEWLINE;
902:
1.149 schwarze 903: return n;
1.138 schwarze 904: }
905:
906: void
907: roff_node_append(struct roff_man *man, struct roff_node *n)
908: {
909:
910: switch (man->next) {
911: case ROFF_NEXT_SIBLING:
1.153 schwarze 912: if (man->last->next != NULL) {
913: n->next = man->last->next;
914: man->last->next->prev = n;
915: } else
916: man->last->parent->last = n;
1.138 schwarze 917: man->last->next = n;
918: n->prev = man->last;
919: n->parent = man->last->parent;
920: break;
921: case ROFF_NEXT_CHILD:
1.159 schwarze 922: if (man->last->child != NULL) {
923: n->next = man->last->child;
924: man->last->child->prev = n;
925: } else
926: man->last->last = n;
1.138 schwarze 927: man->last->child = n;
928: n->parent = man->last;
929: break;
930: default:
931: abort();
932: }
1.154 schwarze 933: man->last = n;
1.138 schwarze 934:
935: switch (n->type) {
936: case ROFFT_HEAD:
937: n->parent->head = n;
938: break;
939: case ROFFT_BODY:
1.154 schwarze 940: if (n->end != ENDBODY_NOT)
941: return;
1.138 schwarze 942: n->parent->body = n;
943: break;
944: case ROFFT_TAIL:
945: n->parent->tail = n;
946: break;
947: default:
1.154 schwarze 948: return;
1.138 schwarze 949: }
1.154 schwarze 950:
951: /*
952: * Copy over the normalised-data pointer of our parent. Not
953: * everybody has one, but copying a null pointer is fine.
954: */
955:
956: n->norm = n->parent->norm;
957: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 958: }
959:
1.139 schwarze 960: void
961: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
962: {
963: struct roff_node *n;
964:
965: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
966: n->string = roff_strdup(man->roff, word);
967: roff_node_append(man, n);
1.158 schwarze 968: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 969: man->next = ROFF_NEXT_SIBLING;
970: }
971:
972: void
973: roff_word_append(struct roff_man *man, const char *word)
974: {
975: struct roff_node *n;
976: char *addstr, *newstr;
977:
978: n = man->last;
979: addstr = roff_strdup(man->roff, word);
980: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
981: free(addstr);
982: free(n->string);
983: n->string = newstr;
984: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 985: }
986:
987: void
988: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
989: {
990: struct roff_node *n;
991:
992: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
993: roff_node_append(man, n);
994: man->next = ROFF_NEXT_CHILD;
995: }
996:
997: struct roff_node *
998: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
999: {
1000: struct roff_node *n;
1001:
1002: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1003: roff_node_append(man, n);
1004: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1005: return n;
1.139 schwarze 1006: }
1007:
1.138 schwarze 1008: struct roff_node *
1009: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1010: {
1011: struct roff_node *n;
1012:
1013: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1014: roff_node_append(man, n);
1015: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1016: return n;
1.138 schwarze 1017: }
1018:
1019: struct roff_node *
1020: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1021: {
1022: struct roff_node *n;
1023:
1024: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1025: roff_node_append(man, n);
1026: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1027: return n;
1.139 schwarze 1028: }
1029:
1.193 schwarze 1030: static void
1.218 schwarze 1031: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.139 schwarze 1032: {
1033: struct roff_node *n;
1.218 schwarze 1034: struct tbl_span *span;
1.139 schwarze 1035:
1.228 schwarze 1036: if (man->meta.macroset == MACROSET_MAN)
1.174 schwarze 1037: man_breakscope(man, ROFF_TS);
1.193 schwarze 1038: while ((span = tbl_span(tbl)) != NULL) {
1.218 schwarze 1039: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.193 schwarze 1040: n->span = span;
1041: roff_node_append(man, n);
1042: n->flags |= NODE_VALID | NODE_ENDED;
1043: man->next = ROFF_NEXT_SIBLING;
1044: }
1.138 schwarze 1045: }
1046:
1047: void
1048: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1049: {
1050:
1051: /* Adjust siblings. */
1052:
1053: if (n->prev)
1054: n->prev->next = n->next;
1055: if (n->next)
1056: n->next->prev = n->prev;
1057:
1058: /* Adjust parent. */
1059:
1060: if (n->parent != NULL) {
1061: if (n->parent->child == n)
1062: n->parent->child = n->next;
1063: if (n->parent->last == n)
1064: n->parent->last = n->prev;
1065: }
1066:
1067: /* Adjust parse point. */
1068:
1069: if (man == NULL)
1070: return;
1071: if (man->last == n) {
1072: if (n->prev == NULL) {
1073: man->last = n->parent;
1074: man->next = ROFF_NEXT_CHILD;
1075: } else {
1076: man->last = n->prev;
1077: man->next = ROFF_NEXT_SIBLING;
1078: }
1079: }
1.228 schwarze 1080: if (man->meta.first == n)
1081: man->meta.first = NULL;
1.216 schwarze 1082: }
1083:
1084: void
1085: roff_node_relink(struct roff_man *man, struct roff_node *n)
1086: {
1087: roff_node_unlink(man, n);
1088: n->prev = n->next = NULL;
1089: roff_node_append(man, n);
1.138 schwarze 1090: }
1091:
1092: void
1093: roff_node_free(struct roff_node *n)
1094: {
1095:
1096: if (n->args != NULL)
1097: mdoc_argv_free(n->args);
1098: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1099: free(n->norm);
1.219 schwarze 1100: eqn_box_free(n->eqn);
1.138 schwarze 1101: free(n->string);
1102: free(n);
1103: }
1104:
1105: void
1106: roff_node_delete(struct roff_man *man, struct roff_node *n)
1107: {
1108:
1109: while (n->child != NULL)
1110: roff_node_delete(man, n->child);
1111: roff_node_unlink(man, n);
1112: roff_node_free(n);
1.242 ! schwarze 1113: }
! 1114:
! 1115: int
! 1116: roff_node_transparent(struct roff_node *n)
! 1117: {
! 1118: if (n == NULL)
! 1119: return 0;
! 1120: if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
! 1121: return 1;
! 1122: switch (n->tok) {
! 1123: case ROFF_ft:
! 1124: case ROFF_ll:
! 1125: case ROFF_mc:
! 1126: case ROFF_po:
! 1127: case ROFF_ta:
! 1128: case MDOC_Db:
! 1129: case MDOC_Es:
! 1130: case MDOC_Sm:
! 1131: case MDOC_Tg:
! 1132: case MAN_DT:
! 1133: case MAN_UC:
! 1134: case MAN_PD:
! 1135: case MAN_AT:
! 1136: return 1;
! 1137: default:
! 1138: return 0;
! 1139: }
! 1140: }
! 1141:
! 1142: struct roff_node *
! 1143: roff_node_child(struct roff_node *n)
! 1144: {
! 1145: for (n = n->child; roff_node_transparent(n); n = n->next)
! 1146: continue;
! 1147: return n;
! 1148: }
! 1149:
! 1150: struct roff_node *
! 1151: roff_node_prev(struct roff_node *n)
! 1152: {
! 1153: do {
! 1154: n = n->prev;
! 1155: } while (roff_node_transparent(n));
! 1156: return n;
! 1157: }
! 1158:
! 1159: struct roff_node *
! 1160: roff_node_next(struct roff_node *n)
! 1161: {
! 1162: do {
! 1163: n = n->next;
! 1164: } while (roff_node_transparent(n));
! 1165: return n;
1.141 schwarze 1166: }
1167:
1168: void
1169: deroff(char **dest, const struct roff_node *n)
1170: {
1171: char *cp;
1172: size_t sz;
1173:
1174: if (n->type != ROFFT_TEXT) {
1175: for (n = n->child; n != NULL; n = n->next)
1176: deroff(dest, n);
1177: return;
1178: }
1179:
1.160 schwarze 1180: /* Skip leading whitespace. */
1.141 schwarze 1181:
1.160 schwarze 1182: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1183: if (cp[0] == '\\' && cp[1] != '\0' &&
1184: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1185: cp++;
1.160 schwarze 1186: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1187: break;
1188: }
1189:
1.161 schwarze 1190: /* Skip trailing backslash. */
1191:
1192: sz = strlen(cp);
1.162 schwarze 1193: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1194: sz--;
1195:
1.141 schwarze 1196: /* Skip trailing whitespace. */
1197:
1.161 schwarze 1198: for (; sz; sz--)
1.141 schwarze 1199: if ( ! isspace((unsigned char)cp[sz-1]))
1200: break;
1201:
1202: /* Skip empty strings. */
1203:
1204: if (sz == 0)
1205: return;
1206:
1207: if (*dest == NULL) {
1208: *dest = mandoc_strndup(cp, sz);
1209: return;
1210: }
1211:
1212: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1213: free(*dest);
1214: *dest = cp;
1.138 schwarze 1215: }
1216:
1217: /* --- main functions of the roff parser ---------------------------------- */
1218:
1.8 schwarze 1219: /*
1.227 schwarze 1220: * In the current line, expand escape sequences that produce parsable
1221: * input text. Also check the syntax of the remaining escape sequences,
1222: * which typically produce output glyphs or change formatter state.
1.8 schwarze 1223: */
1.212 schwarze 1224: static int
1.227 schwarze 1225: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char newesc)
1.8 schwarze 1226: {
1.211 schwarze 1227: struct mctx *ctx; /* current macro call context */
1.81 schwarze 1228: char ubuf[24]; /* buffer to print the number */
1.200 schwarze 1229: struct roff_node *n; /* used for header comments */
1.78 schwarze 1230: const char *start; /* start of the string to process */
1.82 schwarze 1231: char *stesc; /* start of an escape sequence ('\\') */
1.224 schwarze 1232: const char *esct; /* type of esccape sequence */
1.200 schwarze 1233: char *ep; /* end of comment string */
1.23 schwarze 1234: const char *stnam; /* start of the name, after "[(*" */
1235: const char *cp; /* end of the name, e.g. before ']' */
1236: const char *res; /* the string to be substituted */
1.110 schwarze 1237: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1238: size_t maxl; /* expected length of the escape name */
1239: size_t naml; /* actual length of the escape name */
1.211 schwarze 1240: size_t asz; /* length of the replacement */
1241: size_t rsz; /* length of the rest of the string */
1.109 schwarze 1242: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1243: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1244: int npos; /* position in numeric expression */
1.91 schwarze 1245: int arg_complete; /* argument not interrupted by eol */
1.211 schwarze 1246: int quote_args; /* true for \\$@, false for \\$* */
1.175 schwarze 1247: int done; /* no more input available */
1.187 schwarze 1248: int deftype; /* type of definition to paste */
1.195 schwarze 1249: int rcsid; /* kind of RCS id seen */
1.224 schwarze 1250: enum mandocerr err; /* for escape sequence problems */
1.199 schwarze 1251: char sign; /* increment number register */
1.79 schwarze 1252: char term; /* character terminating the escape */
1.8 schwarze 1253:
1.175 schwarze 1254: /* Search forward for comments. */
1255:
1256: done = 0;
1257: start = buf->buf + pos;
1258: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1.227 schwarze 1259: if (stesc[0] != newesc || stesc[1] == '\0')
1.175 schwarze 1260: continue;
1261: stesc++;
1262: if (*stesc != '"' && *stesc != '#')
1263: continue;
1.185 schwarze 1264:
1265: /* Comment found, look for RCS id. */
1266:
1.195 schwarze 1267: rcsid = 0;
1.185 schwarze 1268: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.195 schwarze 1269: rcsid = 1 << MANDOC_OS_OPENBSD;
1.185 schwarze 1270: cp += 8;
1271: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.195 schwarze 1272: rcsid = 1 << MANDOC_OS_NETBSD;
1.185 schwarze 1273: cp += 7;
1274: }
1275: if (cp != NULL &&
1276: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1277: strchr(cp, '$') != NULL) {
1.195 schwarze 1278: if (r->man->meta.rcsids & rcsid)
1.222 schwarze 1279: mandoc_msg(MANDOCERR_RCS_REP, ln,
1280: (int)(stesc - buf->buf) + 1,
1281: "%s", stesc + 1);
1.195 schwarze 1282: r->man->meta.rcsids |= rcsid;
1.186 schwarze 1283: }
1.185 schwarze 1284:
1285: /* Handle trailing whitespace. */
1286:
1.200 schwarze 1287: ep = strchr(stesc--, '\0') - 1;
1288: if (*ep == '\n') {
1.175 schwarze 1289: done = 1;
1.200 schwarze 1290: ep--;
1.175 schwarze 1291: }
1.200 schwarze 1292: if (*ep == ' ' || *ep == '\t')
1.222 schwarze 1293: mandoc_msg(MANDOCERR_SPACE_EOL,
1294: ln, (int)(ep - buf->buf), NULL);
1.200 schwarze 1295:
1296: /*
1297: * Save comments preceding the title macro
1298: * in the syntax tree.
1299: */
1300:
1.239 schwarze 1301: if (newesc != ASCII_ESC && r->options & MPARSE_COMMENT) {
1.200 schwarze 1302: while (*ep == ' ' || *ep == '\t')
1303: ep--;
1304: ep[1] = '\0';
1305: n = roff_node_alloc(r->man,
1306: ln, stesc + 1 - buf->buf,
1307: ROFFT_COMMENT, TOKEN_NONE);
1308: n->string = mandoc_strdup(stesc + 2);
1309: roff_node_append(r->man, n);
1310: n->flags |= NODE_VALID | NODE_ENDED;
1311: r->man->next = ROFF_NEXT_SIBLING;
1312: }
1313:
1.206 schwarze 1314: /* Line continuation with comment. */
1315:
1316: if (stesc[1] == '#') {
1317: *stesc = '\0';
1.212 schwarze 1318: return ROFF_IGN | ROFF_APPEND;
1.206 schwarze 1319: }
1320:
1321: /* Discard normal comments. */
1.200 schwarze 1322:
1.207 schwarze 1323: while (stesc > start && stesc[-1] == ' ' &&
1324: (stesc == start + 1 || stesc[-2] != '\\'))
1.175 schwarze 1325: stesc--;
1326: *stesc = '\0';
1327: break;
1328: }
1329: if (stesc == start)
1330: return ROFF_CONT;
1331: stesc--;
1332:
1333: /* Notice the end of the input. */
1334:
1335: if (*stesc == '\n') {
1336: *stesc-- = '\0';
1337: done = 1;
1338: }
1339:
1.43 schwarze 1340: expand_count = 0;
1.175 schwarze 1341: while (stesc >= start) {
1.227 schwarze 1342: if (*stesc != newesc) {
1.43 schwarze 1343:
1.227 schwarze 1344: /*
1345: * If we have a non-standard escape character,
1346: * escape literal backslashes because all
1347: * processing in subsequent functions uses
1348: * the standard escaping rules.
1349: */
1.78 schwarze 1350:
1.227 schwarze 1351: if (newesc != ASCII_ESC && *stesc == '\\') {
1.175 schwarze 1352: *stesc = '\0';
1353: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1354: buf->buf, stesc + 1) + 1;
1355: start = nbuf + pos;
1356: stesc = nbuf + (stesc - buf->buf);
1357: free(buf->buf);
1358: buf->buf = nbuf;
1359: }
1.227 schwarze 1360:
1361: /* Search backwards for the next escape. */
1362:
1.175 schwarze 1363: stesc--;
1.78 schwarze 1364: continue;
1.175 schwarze 1365: }
1.78 schwarze 1366:
1367: /* If it is escaped, skip it. */
1368:
1369: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1370: if (*cp != r->escape)
1.78 schwarze 1371: break;
1372:
1.110 schwarze 1373: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1374: while (stesc > cp)
1375: *stesc-- = '\\';
1.78 schwarze 1376: continue;
1.175 schwarze 1377: } else if (stesc[1] != '\0') {
1378: *stesc = '\\';
1379: } else {
1380: *stesc-- = '\0';
1381: if (done)
1382: continue;
1383: else
1.212 schwarze 1384: return ROFF_IGN | ROFF_APPEND;
1.78 schwarze 1385: }
1.23 schwarze 1386:
1.79 schwarze 1387: /* Decide whether to expand or to check only. */
1.23 schwarze 1388:
1.79 schwarze 1389: term = '\0';
1.78 schwarze 1390: cp = stesc + 1;
1.224 schwarze 1391: if (*cp == 'E')
1392: cp++;
1393: esct = cp;
1394: switch (*esct) {
1.80 schwarze 1395: case '*':
1.211 schwarze 1396: case '$':
1.53 schwarze 1397: res = NULL;
1398: break;
1.80 schwarze 1399: case 'B':
1400: case 'w':
1.79 schwarze 1401: term = cp[1];
1402: /* FALLTHROUGH */
1.80 schwarze 1403: case 'n':
1.199 schwarze 1404: sign = cp[1];
1405: if (sign == '+' || sign == '-')
1406: cp++;
1.53 schwarze 1407: res = ubuf;
1408: break;
1409: default:
1.224 schwarze 1410: err = MANDOCERR_OK;
1411: switch(mandoc_escape(&cp, &stnam, &inaml)) {
1412: case ESCAPE_SPECIAL:
1413: if (mchars_spec2cp(stnam, inaml) >= 0)
1414: break;
1415: /* FALLTHROUGH */
1416: case ESCAPE_ERROR:
1417: err = MANDOCERR_ESC_BAD;
1418: break;
1419: case ESCAPE_UNDEF:
1420: err = MANDOCERR_ESC_UNDEF;
1421: break;
1422: case ESCAPE_UNSUPP:
1423: err = MANDOCERR_ESC_UNSUPP;
1424: break;
1425: default:
1426: break;
1427: }
1428: if (err != MANDOCERR_OK)
1429: mandoc_msg(err, ln, (int)(stesc - buf->buf),
1.92 schwarze 1430: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1431: stesc--;
1.78 schwarze 1432: continue;
1.42 schwarze 1433: }
1434:
1.78 schwarze 1435: if (EXPAND_LIMIT < ++expand_count) {
1.222 schwarze 1436: mandoc_msg(MANDOCERR_ROFFLOOP,
1.110 schwarze 1437: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1438: return ROFF_IGN;
1.78 schwarze 1439: }
1.23 schwarze 1440:
1441: /*
1442: * The third character decides the length
1.53 schwarze 1443: * of the name of the string or register.
1.23 schwarze 1444: * Save a pointer to the name.
1445: */
1446:
1.110 schwarze 1447: if (term == '\0') {
1.79 schwarze 1448: switch (*++cp) {
1.80 schwarze 1449: case '\0':
1.79 schwarze 1450: maxl = 0;
1451: break;
1.80 schwarze 1452: case '(':
1.79 schwarze 1453: cp++;
1454: maxl = 2;
1455: break;
1.80 schwarze 1456: case '[':
1.79 schwarze 1457: cp++;
1458: term = ']';
1459: maxl = 0;
1460: break;
1461: default:
1462: maxl = 1;
1463: break;
1464: }
1465: } else {
1466: cp += 2;
1.8 schwarze 1467: maxl = 0;
1468: }
1.23 schwarze 1469: stnam = cp;
1.8 schwarze 1470:
1.23 schwarze 1471: /* Advance to the end of the name. */
1.8 schwarze 1472:
1.125 schwarze 1473: naml = 0;
1.91 schwarze 1474: arg_complete = 1;
1.125 schwarze 1475: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1476: if (*cp == '\0') {
1.222 schwarze 1477: mandoc_msg(MANDOCERR_ESC_BAD, ln,
1478: (int)(stesc - buf->buf), "%s", stesc);
1.91 schwarze 1479: arg_complete = 0;
1.79 schwarze 1480: break;
1.42 schwarze 1481: }
1.110 schwarze 1482: if (maxl == 0 && *cp == term) {
1.79 schwarze 1483: cp++;
1.125 schwarze 1484: break;
1485: }
1.224 schwarze 1486: if (*cp++ != '\\' || *esct != 'w') {
1.125 schwarze 1487: naml++;
1488: continue;
1489: }
1490: switch (mandoc_escape(&cp, NULL, NULL)) {
1491: case ESCAPE_SPECIAL:
1492: case ESCAPE_UNICODE:
1493: case ESCAPE_NUMBERED:
1.224 schwarze 1494: case ESCAPE_UNDEF:
1.125 schwarze 1495: case ESCAPE_OVERSTRIKE:
1496: naml++;
1497: break;
1498: default:
1.8 schwarze 1499: break;
1.79 schwarze 1500: }
1.8 schwarze 1501: }
1502:
1.23 schwarze 1503: /*
1504: * Retrieve the replacement string; if it is
1505: * undefined, resume searching for escapes.
1506: */
1507:
1.224 schwarze 1508: switch (*esct) {
1.80 schwarze 1509: case '*':
1.187 schwarze 1510: if (arg_complete) {
1511: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1512: res = roff_getstrn(r, stnam, naml, &deftype);
1.203 schwarze 1513:
1514: /*
1515: * If not overriden, let \*(.T
1516: * through to the formatters.
1517: */
1518:
1519: if (res == NULL && naml == 2 &&
1520: stnam[0] == '.' && stnam[1] == 'T') {
1521: roff_setstrn(&r->strtab,
1522: ".T", 2, NULL, 0, 0);
1523: stesc--;
1524: continue;
1525: }
1.187 schwarze 1526: }
1.79 schwarze 1527: break;
1.211 schwarze 1528: case '$':
1529: if (r->mstackpos < 0) {
1.222 schwarze 1530: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
1531: (int)(stesc - buf->buf), "%.3s", stesc);
1.211 schwarze 1532: break;
1533: }
1534: ctx = r->mstack + r->mstackpos;
1.224 schwarze 1535: npos = esct[1] - '1';
1.211 schwarze 1536: if (npos >= 0 && npos <= 8) {
1537: res = npos < ctx->argc ?
1538: ctx->argv[npos] : "";
1539: break;
1540: }
1.224 schwarze 1541: if (esct[1] == '*')
1.211 schwarze 1542: quote_args = 0;
1.224 schwarze 1543: else if (esct[1] == '@')
1.211 schwarze 1544: quote_args = 1;
1545: else {
1.222 schwarze 1546: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
1547: (int)(stesc - buf->buf), "%.3s", stesc);
1.211 schwarze 1548: break;
1549: }
1550: asz = 0;
1551: for (npos = 0; npos < ctx->argc; npos++) {
1552: if (npos)
1553: asz++; /* blank */
1554: if (quote_args)
1555: asz += 2; /* quotes */
1556: asz += strlen(ctx->argv[npos]);
1557: }
1558: if (asz != 3) {
1559: rsz = buf->sz - (stesc - buf->buf) - 3;
1560: if (asz < 3)
1561: memmove(stesc + asz, stesc + 3, rsz);
1562: buf->sz += asz - 3;
1563: nbuf = mandoc_realloc(buf->buf, buf->sz);
1564: start = nbuf + pos;
1565: stesc = nbuf + (stesc - buf->buf);
1566: buf->buf = nbuf;
1567: if (asz > 3)
1568: memmove(stesc + asz, stesc + 3, rsz);
1569: }
1570: for (npos = 0; npos < ctx->argc; npos++) {
1571: if (npos)
1572: *stesc++ = ' ';
1573: if (quote_args)
1574: *stesc++ = '"';
1575: cp = ctx->argv[npos];
1576: while (*cp != '\0')
1577: *stesc++ = *cp++;
1578: if (quote_args)
1579: *stesc++ = '"';
1580: }
1581: continue;
1.80 schwarze 1582: case 'B':
1.79 schwarze 1583: npos = 0;
1.91 schwarze 1584: ubuf[0] = arg_complete &&
1.133 schwarze 1585: roff_evalnum(r, ln, stnam, &npos,
1586: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1587: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1588: ubuf[1] = '\0';
1589: break;
1.80 schwarze 1590: case 'n':
1.91 schwarze 1591: if (arg_complete)
1592: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.199 schwarze 1593: roff_getregn(r, stnam, naml, sign));
1.91 schwarze 1594: else
1595: ubuf[0] = '\0';
1.79 schwarze 1596: break;
1.80 schwarze 1597: case 'w':
1.91 schwarze 1598: /* use even incomplete args */
1.81 schwarze 1599: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1600: 24 * (int)naml);
1601: break;
1602: }
1.8 schwarze 1603:
1.110 schwarze 1604: if (res == NULL) {
1.224 schwarze 1605: if (*esct == '*')
1.222 schwarze 1606: mandoc_msg(MANDOCERR_STR_UNDEF,
1607: ln, (int)(stesc - buf->buf),
1.211 schwarze 1608: "%.*s", (int)naml, stnam);
1.37 schwarze 1609: res = "";
1.118 schwarze 1610: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.222 schwarze 1611: mandoc_msg(MANDOCERR_ROFFLOOP,
1.118 schwarze 1612: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1613: return ROFF_IGN;
1.8 schwarze 1614: }
1615:
1.23 schwarze 1616: /* Replace the escape sequence by the string. */
1617:
1.82 schwarze 1618: *stesc = '\0';
1.110 schwarze 1619: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1620: buf->buf, res, cp) + 1;
1.8 schwarze 1621:
1.78 schwarze 1622: /* Prepare for the next replacement. */
1.8 schwarze 1623:
1.78 schwarze 1624: start = nbuf + pos;
1.110 schwarze 1625: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1626: free(buf->buf);
1627: buf->buf = nbuf;
1.42 schwarze 1628: }
1.149 schwarze 1629: return ROFF_CONT;
1.42 schwarze 1630: }
1.225 schwarze 1631:
1632: /*
1633: * Parse a quoted or unquoted roff-style request or macro argument.
1634: * Return a pointer to the parsed argument, which is either the original
1635: * pointer or advanced by one byte in case the argument is quoted.
1636: * NUL-terminate the argument in place.
1637: * Collapse pairs of quotes inside quoted arguments.
1638: * Advance the argument pointer to the next argument,
1639: * or to the NUL byte terminating the argument line.
1640: */
1641: char *
1.227 schwarze 1642: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.225 schwarze 1643: {
1.227 schwarze 1644: struct buf buf;
1.238 schwarze 1645: char *cp, *start;
1.227 schwarze 1646: int newesc, pairs, quoted, white;
1.225 schwarze 1647:
1648: /* Quoting can only start with a new word. */
1649: start = *cpp;
1650: quoted = 0;
1651: if ('"' == *start) {
1652: quoted = 1;
1653: start++;
1654: }
1655:
1.227 schwarze 1656: newesc = pairs = white = 0;
1.225 schwarze 1657: for (cp = start; '\0' != *cp; cp++) {
1658:
1659: /*
1660: * Move the following text left
1661: * after quoted quotes and after "\\" and "\t".
1662: */
1663: if (pairs)
1664: cp[-pairs] = cp[0];
1665:
1666: if ('\\' == cp[0]) {
1667: /*
1668: * In copy mode, translate double to single
1669: * backslashes and backslash-t to literal tabs.
1670: */
1671: switch (cp[1]) {
1672: case 'a':
1673: case 't':
1.226 schwarze 1674: cp[-pairs] = '\t';
1.227 schwarze 1675: pairs++;
1676: cp++;
1677: break;
1.225 schwarze 1678: case '\\':
1.227 schwarze 1679: newesc = 1;
1680: cp[-pairs] = ASCII_ESC;
1.225 schwarze 1681: pairs++;
1682: cp++;
1683: break;
1684: case ' ':
1685: /* Skip escaped blanks. */
1686: if (0 == quoted)
1687: cp++;
1688: break;
1689: default:
1690: break;
1691: }
1692: } else if (0 == quoted) {
1693: if (' ' == cp[0]) {
1694: /* Unescaped blanks end unquoted args. */
1695: white = 1;
1696: break;
1697: }
1698: } else if ('"' == cp[0]) {
1699: if ('"' == cp[1]) {
1700: /* Quoted quotes collapse. */
1701: pairs++;
1702: cp++;
1703: } else {
1704: /* Unquoted quotes end quoted args. */
1705: quoted = 2;
1706: break;
1707: }
1708: }
1709: }
1710:
1711: /* Quoted argument without a closing quote. */
1712: if (1 == quoted)
1713: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1714:
1715: /* NUL-terminate this argument and move to the next one. */
1716: if (pairs)
1717: cp[-pairs] = '\0';
1718: if ('\0' != *cp) {
1719: *cp++ = '\0';
1720: while (' ' == *cp)
1721: cp++;
1722: }
1723: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1724: *cpp = cp;
1725:
1726: if ('\0' == *cp && (white || ' ' == cp[-1]))
1727: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1728:
1.227 schwarze 1729: start = mandoc_strdup(start);
1730: if (newesc == 0)
1731: return start;
1732:
1733: buf.buf = start;
1734: buf.sz = strlen(start) + 1;
1735: buf.next = NULL;
1736: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1737: free(buf.buf);
1738: buf.buf = mandoc_strdup("");
1739: }
1740: return buf.buf;
1.225 schwarze 1741: }
1742:
1.42 schwarze 1743:
1744: /*
1.147 schwarze 1745: * Process text streams.
1.42 schwarze 1746: */
1.212 schwarze 1747: static int
1.177 schwarze 1748: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1749: {
1750: size_t sz;
1751: const char *start;
1.51 schwarze 1752: char *p;
1753: int isz;
1.42 schwarze 1754: enum mandoc_esc esc;
1755:
1.147 schwarze 1756: /* Spring the input line trap. */
1757:
1758: if (roffit_lines == 1) {
1759: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1760: free(buf->buf);
1761: buf->buf = p;
1762: buf->sz = isz + 1;
1763: *offs = 0;
1764: free(roffit_macro);
1765: roffit_lines = 0;
1.149 schwarze 1766: return ROFF_REPARSE;
1.147 schwarze 1767: } else if (roffit_lines > 1)
1768: --roffit_lines;
1769:
1.177 schwarze 1770: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1771: if (roffce_lines < 1) {
1772: r->man->last = roffce_node;
1773: r->man->next = ROFF_NEXT_SIBLING;
1774: roffce_lines = 0;
1775: roffce_node = NULL;
1776: } else
1777: roffce_lines--;
1778: }
1779:
1.147 schwarze 1780: /* Convert all breakable hyphens into ASCII_HYPH. */
1781:
1.110 schwarze 1782: start = p = buf->buf + pos;
1.42 schwarze 1783:
1.110 schwarze 1784: while (*p != '\0') {
1.42 schwarze 1785: sz = strcspn(p, "-\\");
1786: p += sz;
1787:
1.110 schwarze 1788: if (*p == '\0')
1.42 schwarze 1789: break;
1790:
1.110 schwarze 1791: if (*p == '\\') {
1.42 schwarze 1792: /* Skip over escapes. */
1793: p++;
1.62 schwarze 1794: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1795: if (esc == ESCAPE_ERROR)
1.42 schwarze 1796: break;
1.136 schwarze 1797: while (*p == '-')
1798: p++;
1.42 schwarze 1799: continue;
1800: } else if (p == start) {
1801: p++;
1802: continue;
1803: }
1804:
1.44 schwarze 1805: if (isalpha((unsigned char)p[-1]) &&
1806: isalpha((unsigned char)p[1]))
1.42 schwarze 1807: *p = ASCII_HYPH;
1808: p++;
1.8 schwarze 1809: }
1.149 schwarze 1810: return ROFF_CONT;
1.8 schwarze 1811: }
1812:
1.212 schwarze 1813: int
1.110 schwarze 1814: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1815: {
1.166 schwarze 1816: enum roff_tok t;
1.212 schwarze 1817: int e;
1.110 schwarze 1818: int pos; /* parse point */
1.115 schwarze 1819: int spos; /* saved parse point for messages */
1.110 schwarze 1820: int ppos; /* original offset in buf->buf */
1821: int ctl; /* macro line (boolean) */
1822:
1823: ppos = pos = *offs;
1.1 schwarze 1824:
1.102 schwarze 1825: /* Handle in-line equation delimiters. */
1826:
1.108 schwarze 1827: if (r->tbl == NULL &&
1828: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1829: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1830: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1831: if (e == ROFF_REPARSE)
1.149 schwarze 1832: return e;
1.102 schwarze 1833: assert(e == ROFF_CONT);
1834: }
1835:
1836: /* Expand some escape sequences. */
1.8 schwarze 1837:
1.227 schwarze 1838: e = roff_expand(r, buf, ln, pos, r->escape);
1.212 schwarze 1839: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1840: return e;
1.110 schwarze 1841: assert(e == ROFF_CONT);
1.8 schwarze 1842:
1.110 schwarze 1843: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1844:
1.8 schwarze 1845: /*
1.2 schwarze 1846: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1847: * text through the macro's filter.
1848: * Equations process all content themselves.
1849: * Tables process almost all content themselves, but we want
1850: * to warn about macros before passing it there.
1.2 schwarze 1851: */
1852:
1.124 schwarze 1853: if (r->last != NULL && ! ctl) {
1.2 schwarze 1854: t = r->last->tok;
1.110 schwarze 1855: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.212 schwarze 1856: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1857: return e;
1.212 schwarze 1858: e &= ~ROFF_MASK;
1859: } else
1860: e = ROFF_IGN;
1.191 schwarze 1861: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1862: eqn_read(r->eqn, buf->buf + ppos);
1.212 schwarze 1863: return e;
1.191 schwarze 1864: }
1.193 schwarze 1865: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1866: tbl_read(r->tbl, ln, buf->buf, ppos);
1.218 schwarze 1867: roff_addtbl(r->man, ln, r->tbl);
1.212 schwarze 1868: return e;
1.193 schwarze 1869: }
1.239 schwarze 1870: if ( ! ctl) {
1871: r->options &= ~MPARSE_COMMENT;
1.212 schwarze 1872: return roff_parsetext(r, buf, pos, offs) | e;
1.239 schwarze 1873: }
1.100 schwarze 1874:
1875: /* Skip empty request lines. */
1876:
1.110 schwarze 1877: if (buf->buf[pos] == '"') {
1.222 schwarze 1878: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.149 schwarze 1879: return ROFF_IGN;
1.110 schwarze 1880: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1881: return ROFF_IGN;
1.2 schwarze 1882:
1883: /*
1884: * If a scope is open, go to the child handler for that macro,
1885: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1886: * Don't do so if an equation is open.
1.2 schwarze 1887: */
1888:
1889: if (r->last) {
1.1 schwarze 1890: t = r->last->tok;
1.149 schwarze 1891: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1892: }
1893:
1.115 schwarze 1894: /* No scope is open. This is a new request or macro. */
1895:
1.239 schwarze 1896: r->options &= ~MPARSE_COMMENT;
1.115 schwarze 1897: spos = pos;
1898: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1899:
1900: /* Tables ignore most macros. */
1901:
1.180 schwarze 1902: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1903: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.222 schwarze 1904: mandoc_msg(MANDOCERR_TBLMACRO,
1905: ln, pos, "%s", buf->buf + spos);
1.180 schwarze 1906: if (t != TOKEN_NONE)
1.149 schwarze 1907: return ROFF_IGN;
1.129 schwarze 1908: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1909: pos++;
1.163 schwarze 1910: while (buf->buf[pos] == ' ')
1.129 schwarze 1911: pos++;
1.193 schwarze 1912: tbl_read(r->tbl, ln, buf->buf, pos);
1.218 schwarze 1913: roff_addtbl(r->man, ln, r->tbl);
1.193 schwarze 1914: return ROFF_IGN;
1.115 schwarze 1915: }
1916:
1.177 schwarze 1917: /* For now, let high level macros abort .ce mode. */
1918:
1919: if (ctl && roffce_node != NULL &&
1.196 schwarze 1920: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1921: t == ROFF_TH || t == ROFF_TS)) {
1.177 schwarze 1922: r->man->last = roffce_node;
1923: r->man->next = ROFF_NEXT_SIBLING;
1924: roffce_lines = 0;
1925: roffce_node = NULL;
1926: }
1927:
1.2 schwarze 1928: /*
1.115 schwarze 1929: * This is neither a roff request nor a user-defined macro.
1930: * Let the standard macro set parsers handle it.
1.2 schwarze 1931: */
1932:
1.166 schwarze 1933: if (t == TOKEN_NONE)
1.149 schwarze 1934: return ROFF_CONT;
1.115 schwarze 1935:
1936: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1937:
1.168 schwarze 1938: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1939: }
1940:
1.211 schwarze 1941: /*
1942: * Internal interface function to tell the roff parser that execution
1943: * of the current macro ended. This is required because macro
1944: * definitions usually do not end with a .return request.
1945: */
1946: void
1947: roff_userret(struct roff *r)
1948: {
1949: struct mctx *ctx;
1950: int i;
1951:
1952: assert(r->mstackpos >= 0);
1953: ctx = r->mstack + r->mstackpos;
1954: for (i = 0; i < ctx->argc; i++)
1955: free(ctx->argv[i]);
1956: ctx->argc = 0;
1957: r->mstackpos--;
1958: }
1959:
1.27 schwarze 1960: void
1.2 schwarze 1961: roff_endparse(struct roff *r)
1962: {
1.193 schwarze 1963: if (r->last != NULL)
1.222 schwarze 1964: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1965: r->last->col, "%s", roff_name[r->last->tok]);
1.27 schwarze 1966:
1.193 schwarze 1967: if (r->eqn != NULL) {
1.222 schwarze 1968: mandoc_msg(MANDOCERR_BLK_NOEND,
1.191 schwarze 1969: r->eqn->node->line, r->eqn->node->pos, "EQ");
1970: eqn_parse(r->eqn);
1971: r->eqn = NULL;
1.32 schwarze 1972: }
1973:
1.193 schwarze 1974: if (r->tbl != NULL) {
1.218 schwarze 1975: tbl_end(r->tbl, 1);
1.193 schwarze 1976: r->tbl = NULL;
1.27 schwarze 1977: }
1.1 schwarze 1978: }
1979:
1980: /*
1981: * Parse a roff node's type from the input buffer. This must be in the
1982: * form of ".foo xxx" in the usual way.
1983: */
1.166 schwarze 1984: static enum roff_tok
1.87 schwarze 1985: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1986: {
1.87 schwarze 1987: char *cp;
1.16 schwarze 1988: const char *mac;
1989: size_t maclen;
1.187 schwarze 1990: int deftype;
1.166 schwarze 1991: enum roff_tok t;
1.1 schwarze 1992:
1.87 schwarze 1993: cp = buf + *pos;
1994:
1995: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1996: return TOKEN_NONE;
1.1 schwarze 1997:
1.87 schwarze 1998: mac = cp;
1999: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 2000:
1.187 schwarze 2001: deftype = ROFFDEF_USER | ROFFDEF_REN;
2002: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
2003: switch (deftype) {
2004: case ROFFDEF_USER:
2005: t = ROFF_USERDEF;
2006: break;
2007: case ROFFDEF_REN:
2008: t = ROFF_RENAMED;
2009: break;
2010: default:
2011: t = roffhash_find(r->reqtab, mac, maclen);
2012: break;
2013: }
1.166 schwarze 2014: if (t != TOKEN_NONE)
1.87 schwarze 2015: *pos = cp - buf;
1.197 schwarze 2016: else if (deftype == ROFFDEF_UNDEF) {
2017: /* Using an undefined macro defines it to be empty. */
2018: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
2019: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
2020: }
1.149 schwarze 2021: return t;
1.1 schwarze 2022: }
2023:
1.138 schwarze 2024: /* --- handling of request blocks ----------------------------------------- */
2025:
1.212 schwarze 2026: static int
1.2 schwarze 2027: roff_cblock(ROFF_ARGS)
1.1 schwarze 2028: {
2029:
1.2 schwarze 2030: /*
2031: * A block-close `..' should only be invoked as a child of an
2032: * ignore macro, otherwise raise a warning and just ignore it.
2033: */
2034:
1.110 schwarze 2035: if (r->last == NULL) {
1.222 schwarze 2036: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 2037: return ROFF_IGN;
1.2 schwarze 2038: }
1.1 schwarze 2039:
1.2 schwarze 2040: switch (r->last->tok) {
1.80 schwarze 2041: case ROFF_am:
1.93 schwarze 2042: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 2043: case ROFF_ami:
2044: case ROFF_de:
1.23 schwarze 2045: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 2046: case ROFF_dei:
2047: case ROFF_ig:
1.2 schwarze 2048: break;
2049: default:
1.222 schwarze 2050: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 2051: return ROFF_IGN;
1.2 schwarze 2052: }
2053:
1.110 schwarze 2054: if (buf->buf[pos] != '\0')
1.222 schwarze 2055: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 2056: ".. %s", buf->buf + pos);
1.2 schwarze 2057:
2058: roffnode_pop(r);
2059: roffnode_cleanscope(r);
1.149 schwarze 2060: return ROFF_IGN;
1.2 schwarze 2061:
2062: }
1.1 schwarze 2063:
1.236 schwarze 2064: /*
2065: * Pop all nodes ending at the end of the current input line.
2066: * Return the number of loops ended.
2067: */
1.212 schwarze 2068: static int
1.2 schwarze 2069: roffnode_cleanscope(struct roff *r)
2070: {
1.212 schwarze 2071: int inloop;
1.1 schwarze 2072:
1.212 schwarze 2073: inloop = 0;
2074: while (r->last != NULL) {
1.46 schwarze 2075: if (--r->last->endspan != 0)
1.2 schwarze 2076: break;
1.212 schwarze 2077: inloop += roffnode_pop(r);
1.2 schwarze 2078: }
1.212 schwarze 2079: return inloop;
1.2 schwarze 2080: }
1.1 schwarze 2081:
1.236 schwarze 2082: /*
2083: * Handle the closing \} of a conditional block.
2084: * Apart from generating warnings, this only pops nodes.
2085: * Return the number of loops ended.
2086: */
1.212 schwarze 2087: static int
1.68 schwarze 2088: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 2089: {
2090: if (NULL == r->last) {
1.222 schwarze 2091: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2092: return 0;
1.2 schwarze 2093: }
1.1 schwarze 2094:
1.2 schwarze 2095: switch (r->last->tok) {
1.80 schwarze 2096: case ROFF_el:
2097: case ROFF_ie:
2098: case ROFF_if:
1.212 schwarze 2099: case ROFF_while:
1.2 schwarze 2100: break;
2101: default:
1.222 schwarze 2102: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2103: return 0;
1.2 schwarze 2104: }
1.1 schwarze 2105:
1.2 schwarze 2106: if (r->last->endspan > -1) {
1.222 schwarze 2107: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2108: return 0;
1.2 schwarze 2109: }
2110:
1.212 schwarze 2111: return roffnode_pop(r) + roffnode_cleanscope(r);
1.1 schwarze 2112: }
2113:
1.212 schwarze 2114: static int
1.2 schwarze 2115: roff_block(ROFF_ARGS)
1.1 schwarze 2116: {
1.187 schwarze 2117: const char *name, *value;
2118: char *call, *cp, *iname, *rname;
2119: size_t csz, namesz, rsz;
2120: int deftype;
1.16 schwarze 2121:
1.93 schwarze 2122: /* Ignore groff compatibility mode for now. */
1.2 schwarze 2123:
1.110 schwarze 2124: if (tok == ROFF_de1)
1.93 schwarze 2125: tok = ROFF_de;
1.123 schwarze 2126: else if (tok == ROFF_dei1)
2127: tok = ROFF_dei;
1.110 schwarze 2128: else if (tok == ROFF_am1)
1.93 schwarze 2129: tok = ROFF_am;
1.123 schwarze 2130: else if (tok == ROFF_ami1)
2131: tok = ROFF_ami;
1.93 schwarze 2132:
2133: /* Parse the macro name argument. */
2134:
1.110 schwarze 2135: cp = buf->buf + pos;
2136: if (tok == ROFF_ig) {
1.93 schwarze 2137: iname = NULL;
2138: namesz = 0;
2139: } else {
2140: iname = cp;
2141: namesz = roff_getname(r, &cp, ln, ppos);
2142: iname[namesz] = '\0';
2143: }
1.22 schwarze 2144:
1.93 schwarze 2145: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 2146:
1.110 schwarze 2147: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2148: deftype = ROFFDEF_USER;
2149: name = roff_getstrn(r, iname, namesz, &deftype);
2150: if (name == NULL) {
1.222 schwarze 2151: mandoc_msg(MANDOCERR_STR_UNDEF,
2152: ln, (int)(iname - buf->buf),
1.93 schwarze 2153: "%.*s", (int)namesz, iname);
2154: namesz = 0;
2155: } else
2156: namesz = strlen(name);
2157: } else
2158: name = iname;
1.22 schwarze 2159:
1.110 schwarze 2160: if (namesz == 0 && tok != ROFF_ig) {
1.222 schwarze 2161: mandoc_msg(MANDOCERR_REQ_EMPTY,
2162: ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2163: return ROFF_IGN;
1.93 schwarze 2164: }
1.2 schwarze 2165:
1.16 schwarze 2166: roffnode_push(r, tok, name, ln, ppos);
2167:
2168: /*
2169: * At the beginning of a `de' macro, clear the existing string
2170: * with the same name, if there is one. New content will be
1.66 schwarze 2171: * appended from roff_block_text() in multiline mode.
1.16 schwarze 2172: */
1.22 schwarze 2173:
1.183 schwarze 2174: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 2175: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 2176: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 2177: } else if (tok == ROFF_am || tok == ROFF_ami) {
2178: deftype = ROFFDEF_ANY;
2179: value = roff_getstrn(r, iname, namesz, &deftype);
2180: switch (deftype) { /* Before appending, ... */
2181: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2182: roff_setstrn(&r->strtab, name, namesz,
2183: value, strlen(value), 0);
2184: break;
2185: case ROFFDEF_REN: /* call original standard macro. */
2186: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2187: (int)strlen(value), value);
2188: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2189: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2190: free(call);
2191: break;
2192: case ROFFDEF_STD: /* rename and call standard macro. */
2193: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2194: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2195: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2196: (int)rsz, rname);
2197: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2198: free(call);
2199: free(rname);
2200: break;
2201: default:
2202: break;
2203: }
1.183 schwarze 2204: }
1.2 schwarze 2205:
1.110 schwarze 2206: if (*cp == '\0')
1.149 schwarze 2207: return ROFF_IGN;
1.1 schwarze 2208:
1.93 schwarze 2209: /* Get the custom end marker. */
1.22 schwarze 2210:
1.93 schwarze 2211: iname = cp;
1.86 schwarze 2212: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 2213:
2214: /* Resolve the end marker if it is indirect. */
2215:
1.110 schwarze 2216: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2217: deftype = ROFFDEF_USER;
2218: name = roff_getstrn(r, iname, namesz, &deftype);
2219: if (name == NULL) {
1.222 schwarze 2220: mandoc_msg(MANDOCERR_STR_UNDEF,
2221: ln, (int)(iname - buf->buf),
1.93 schwarze 2222: "%.*s", (int)namesz, iname);
2223: namesz = 0;
2224: } else
2225: namesz = strlen(name);
2226: } else
2227: name = iname;
2228:
1.86 schwarze 2229: if (namesz)
2230: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 2231:
1.110 schwarze 2232: if (*cp != '\0')
1.222 schwarze 2233: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.167 schwarze 2234: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 2235:
1.149 schwarze 2236: return ROFF_IGN;
1.1 schwarze 2237: }
2238:
1.212 schwarze 2239: static int
1.2 schwarze 2240: roff_block_sub(ROFF_ARGS)
1.1 schwarze 2241: {
1.166 schwarze 2242: enum roff_tok t;
1.2 schwarze 2243: int i, j;
2244:
2245: /*
2246: * First check whether a custom macro exists at this level. If
2247: * it does, then check against it. This is some of groff's
2248: * stranger behaviours. If we encountered a custom end-scope
2249: * tag and that tag also happens to be a "real" macro, then we
2250: * need to try interpreting it again as a real macro. If it's
2251: * not, then return ignore. Else continue.
2252: */
2253:
2254: if (r->last->end) {
1.35 schwarze 2255: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 2256: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 2257: break;
1.1 schwarze 2258:
1.110 schwarze 2259: if (r->last->end[j] == '\0' &&
2260: (buf->buf[i] == '\0' ||
2261: buf->buf[i] == ' ' ||
2262: buf->buf[i] == '\t')) {
1.2 schwarze 2263: roffnode_pop(r);
2264: roffnode_cleanscope(r);
1.1 schwarze 2265:
1.110 schwarze 2266: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 2267: i++;
2268:
2269: pos = i;
1.110 schwarze 2270: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 2271: TOKEN_NONE)
1.149 schwarze 2272: return ROFF_RERUN;
2273: return ROFF_IGN;
1.2 schwarze 2274: }
1.1 schwarze 2275: }
2276:
1.2 schwarze 2277: /*
2278: * If we have no custom end-query or lookup failed, then try
2279: * pulling it out of the hashtable.
2280: */
1.1 schwarze 2281:
1.110 schwarze 2282: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 2283:
1.110 schwarze 2284: if (t != ROFF_cblock) {
2285: if (tok != ROFF_ig)
2286: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 2287: return ROFF_IGN;
1.16 schwarze 2288: }
1.1 schwarze 2289:
1.149 schwarze 2290: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 2291: }
2292:
1.212 schwarze 2293: static int
1.2 schwarze 2294: roff_block_text(ROFF_ARGS)
2295: {
2296:
1.110 schwarze 2297: if (tok != ROFF_ig)
2298: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 2299:
1.149 schwarze 2300: return ROFF_IGN;
1.2 schwarze 2301: }
2302:
1.212 schwarze 2303: static int
1.2 schwarze 2304: roff_cond_sub(ROFF_ARGS)
2305: {
1.236 schwarze 2306: struct roffnode *bl;
1.212 schwarze 2307: char *ep;
2308: int endloop, irc, rr;
1.166 schwarze 2309: enum roff_tok t;
1.2 schwarze 2310:
1.212 schwarze 2311: irc = ROFF_IGN;
1.2 schwarze 2312: rr = r->last->rule;
1.212 schwarze 2313: endloop = tok != ROFF_while ? ROFF_IGN :
2314: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2315: if (roffnode_cleanscope(r))
2316: irc |= endloop;
1.39 schwarze 2317:
1.69 schwarze 2318: /*
2319: * If `\}' occurs on a macro line without a preceding macro,
2320: * drop the line completely.
2321: */
2322:
1.110 schwarze 2323: ep = buf->buf + pos;
2324: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 2325: rr = 0;
1.69 schwarze 2326:
1.215 schwarze 2327: /*
2328: * The closing delimiter `\}' rewinds the conditional scope
2329: * but is otherwise ignored when interpreting the line.
2330: */
1.39 schwarze 2331:
1.110 schwarze 2332: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 2333: switch (ep[1]) {
2334: case '}':
2335: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.212 schwarze 2336: if (roff_ccond(r, ln, ep - buf->buf))
2337: irc |= endloop;
1.190 schwarze 2338: break;
2339: case '\0':
2340: ++ep;
2341: break;
2342: default:
2343: ep += 2;
2344: break;
1.70 schwarze 2345: }
1.50 schwarze 2346: }
1.190 schwarze 2347:
1.240 schwarze 2348: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2349:
2350: /* For now, let high level macros abort .ce mode. */
2351:
2352: if (roffce_node != NULL &&
2353: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
2354: t == ROFF_TH || t == ROFF_TS)) {
2355: r->man->last = roffce_node;
2356: r->man->next = ROFF_NEXT_SIBLING;
2357: roffce_lines = 0;
2358: roffce_node = NULL;
2359: }
2360:
1.190 schwarze 2361: /*
2362: * Fully handle known macros when they are structurally
2363: * required or when the conditional evaluated to true.
2364: */
2365:
1.236 schwarze 2366: if (t == ROFF_break) {
2367: if (irc & ROFF_LOOPMASK)
2368: irc = ROFF_IGN | ROFF_LOOPEXIT;
2369: else if (rr) {
2370: for (bl = r->last; bl != NULL; bl = bl->parent) {
2371: bl->rule = 0;
2372: if (bl->tok == ROFF_while)
2373: break;
2374: }
2375: }
2376: } else if (t != TOKEN_NONE &&
2377: (rr || roffs[t].flags & ROFFMAC_STRUCT))
2378: irc |= (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
2379: else
2380: irc |= rr ? ROFF_CONT : ROFF_IGN;
1.212 schwarze 2381: return irc;
1.2 schwarze 2382: }
2383:
1.212 schwarze 2384: static int
1.2 schwarze 2385: roff_cond_text(ROFF_ARGS)
2386: {
1.37 schwarze 2387: char *ep;
1.212 schwarze 2388: int endloop, irc, rr;
1.2 schwarze 2389:
1.212 schwarze 2390: irc = ROFF_IGN;
1.2 schwarze 2391: rr = r->last->rule;
1.212 schwarze 2392: endloop = tok != ROFF_while ? ROFF_IGN :
2393: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2394: if (roffnode_cleanscope(r))
2395: irc |= endloop;
1.1 schwarze 2396:
1.215 schwarze 2397: /*
2398: * If `\}' occurs on a text line with neither preceding
2399: * nor following characters, drop the line completely.
2400: */
2401:
1.110 schwarze 2402: ep = buf->buf + pos;
1.215 schwarze 2403: if (strcmp(ep, "\\}") == 0)
2404: rr = 0;
2405:
2406: /*
2407: * The closing delimiter `\}' rewinds the conditional scope
2408: * but is otherwise ignored when interpreting the line.
2409: */
2410:
1.110 schwarze 2411: while ((ep = strchr(ep, '\\')) != NULL) {
1.215 schwarze 2412: switch (ep[1]) {
2413: case '}':
2414: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2415: if (roff_ccond(r, ln, ep - buf->buf))
1.212 schwarze 2416: irc |= endloop;
1.215 schwarze 2417: break;
2418: case '\0':
2419: ++ep;
2420: break;
2421: default:
2422: ep += 2;
2423: break;
1.70 schwarze 2424: }
1.2 schwarze 2425: }
1.212 schwarze 2426: if (rr)
2427: irc |= ROFF_CONT;
2428: return irc;
1.2 schwarze 2429: }
2430:
1.138 schwarze 2431: /* --- handling of numeric and conditional expressions -------------------- */
2432:
1.77 schwarze 2433: /*
2434: * Parse a single signed integer number. Stop at the first non-digit.
2435: * If there is at least one digit, return success and advance the
2436: * parse point, else return failure and let the parse point unchanged.
2437: * Ignore overflows, treat them just like the C language.
2438: */
1.56 schwarze 2439: static int
1.133 schwarze 2440: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2441: {
1.133 schwarze 2442: int myres, scaled, n, p;
1.79 schwarze 2443:
2444: if (NULL == res)
2445: res = &myres;
1.56 schwarze 2446:
2447: p = *pos;
2448: n = v[p] == '-';
1.133 schwarze 2449: if (n || v[p] == '+')
1.56 schwarze 2450: p++;
2451:
1.133 schwarze 2452: if (flags & ROFFNUM_WHITE)
2453: while (isspace((unsigned char)v[p]))
2454: p++;
2455:
1.56 schwarze 2456: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2457: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2458: if (p == *pos + n)
2459: return 0;
2460:
2461: if (n)
2462: *res = -*res;
2463:
1.126 schwarze 2464: /* Each number may be followed by one optional scaling unit. */
2465:
2466: switch (v[p]) {
2467: case 'f':
1.133 schwarze 2468: scaled = *res * 65536;
1.126 schwarze 2469: break;
2470: case 'i':
1.133 schwarze 2471: scaled = *res * 240;
1.126 schwarze 2472: break;
2473: case 'c':
1.133 schwarze 2474: scaled = *res * 240 / 2.54;
1.126 schwarze 2475: break;
2476: case 'v':
2477: case 'P':
1.133 schwarze 2478: scaled = *res * 40;
1.126 schwarze 2479: break;
2480: case 'm':
2481: case 'n':
1.133 schwarze 2482: scaled = *res * 24;
1.126 schwarze 2483: break;
2484: case 'p':
1.133 schwarze 2485: scaled = *res * 10 / 3;
1.126 schwarze 2486: break;
2487: case 'u':
1.133 schwarze 2488: scaled = *res;
1.126 schwarze 2489: break;
2490: case 'M':
1.133 schwarze 2491: scaled = *res * 6 / 25;
1.126 schwarze 2492: break;
2493: default:
1.133 schwarze 2494: scaled = *res;
1.126 schwarze 2495: p--;
2496: break;
2497: }
1.133 schwarze 2498: if (flags & ROFFNUM_SCALE)
2499: *res = scaled;
1.126 schwarze 2500:
2501: *pos = p + 1;
1.149 schwarze 2502: return 1;
1.56 schwarze 2503: }
2504:
1.71 schwarze 2505: /*
2506: * Evaluate a string comparison condition.
2507: * The first character is the delimiter.
2508: * Succeed if the string up to its second occurrence
2509: * matches the string up to its third occurence.
2510: * Advance the cursor after the third occurrence
2511: * or lacking that, to the end of the line.
2512: */
2513: static int
2514: roff_evalstrcond(const char *v, int *pos)
2515: {
2516: const char *s1, *s2, *s3;
2517: int match;
2518:
2519: match = 0;
2520: s1 = v + *pos; /* initial delimiter */
2521: s2 = s1 + 1; /* for scanning the first string */
2522: s3 = strchr(s2, *s1); /* for scanning the second string */
2523:
2524: if (NULL == s3) /* found no middle delimiter */
2525: goto out;
2526:
2527: while ('\0' != *++s3) {
2528: if (*s2 != *s3) { /* mismatch */
2529: s3 = strchr(s3, *s1);
2530: break;
2531: }
2532: if (*s3 == *s1) { /* found the final delimiter */
2533: match = 1;
2534: break;
2535: }
2536: s2++;
2537: }
2538:
2539: out:
2540: if (NULL == s3)
2541: s3 = strchr(s2, '\0');
1.114 schwarze 2542: else if (*s3 != '\0')
1.71 schwarze 2543: s3++;
2544: *pos = s3 - v;
1.149 schwarze 2545: return match;
1.71 schwarze 2546: }
2547:
1.77 schwarze 2548: /*
2549: * Evaluate an optionally negated single character, numerical,
2550: * or string condition.
2551: */
1.71 schwarze 2552: static int
1.143 schwarze 2553: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2554: {
1.208 schwarze 2555: const char *start, *end;
2556: char *cp, *name;
2557: size_t sz;
2558: int deftype, len, number, savepos, istrue, wanttrue;
1.5 schwarze 2559:
1.71 schwarze 2560: if ('!' == v[*pos]) {
2561: wanttrue = 0;
2562: (*pos)++;
2563: } else
2564: wanttrue = 1;
2565:
1.5 schwarze 2566: switch (v[*pos]) {
1.112 schwarze 2567: case '\0':
1.149 schwarze 2568: return 0;
1.80 schwarze 2569: case 'n':
2570: case 'o':
1.5 schwarze 2571: (*pos)++;
1.149 schwarze 2572: return wanttrue;
1.80 schwarze 2573: case 'e':
2574: case 't':
1.111 schwarze 2575: case 'v':
1.5 schwarze 2576: (*pos)++;
1.149 schwarze 2577: return !wanttrue;
1.208 schwarze 2578: case 'c':
2579: do {
2580: (*pos)++;
2581: } while (v[*pos] == ' ');
2582:
2583: /*
2584: * Quirk for groff compatibility:
2585: * The horizontal tab is neither available nor unavailable.
2586: */
2587:
2588: if (v[*pos] == '\t') {
2589: (*pos)++;
2590: return 0;
2591: }
2592:
2593: /* Printable ASCII characters are available. */
2594:
2595: if (v[*pos] != '\\') {
2596: (*pos)++;
2597: return wanttrue;
2598: }
2599:
2600: end = v + ++*pos;
2601: switch (mandoc_escape(&end, &start, &len)) {
2602: case ESCAPE_SPECIAL:
2603: istrue = mchars_spec2cp(start, len) != -1;
2604: break;
2605: case ESCAPE_UNICODE:
2606: istrue = 1;
2607: break;
2608: case ESCAPE_NUMBERED:
2609: istrue = mchars_num2char(start, len) != -1;
2610: break;
2611: default:
2612: istrue = !wanttrue;
2613: break;
2614: }
2615: *pos = end - v;
2616: return istrue == wanttrue;
1.182 schwarze 2617: case 'd':
1.143 schwarze 2618: case 'r':
1.182 schwarze 2619: cp = v + *pos + 1;
2620: while (*cp == ' ')
2621: cp++;
2622: name = cp;
2623: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2624: if (sz == 0)
2625: istrue = 0;
2626: else if (v[*pos] == 'r')
2627: istrue = roff_hasregn(r, name, sz);
2628: else {
2629: deftype = ROFFDEF_ANY;
2630: roff_getstrn(r, name, sz, &deftype);
2631: istrue = !!deftype;
2632: }
1.235 schwarze 2633: *pos = (name + sz) - v;
1.182 schwarze 2634: return istrue == wanttrue;
1.5 schwarze 2635: default:
2636: break;
2637: }
2638:
1.113 schwarze 2639: savepos = *pos;
1.133 schwarze 2640: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2641: return (number > 0) == wanttrue;
1.113 schwarze 2642: else if (*pos == savepos)
1.149 schwarze 2643: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2644: else
1.149 schwarze 2645: return 0;
1.5 schwarze 2646: }
2647:
1.212 schwarze 2648: static int
1.21 schwarze 2649: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2650: {
1.30 schwarze 2651:
1.149 schwarze 2652: return ROFF_IGN;
1.21 schwarze 2653: }
2654:
1.212 schwarze 2655: static int
1.123 schwarze 2656: roff_insec(ROFF_ARGS)
2657: {
2658:
1.222 schwarze 2659: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2660: return ROFF_IGN;
1.123 schwarze 2661: }
2662:
1.212 schwarze 2663: static int
1.123 schwarze 2664: roff_unsupp(ROFF_ARGS)
2665: {
2666:
1.222 schwarze 2667: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2668: return ROFF_IGN;
1.123 schwarze 2669: }
2670:
1.212 schwarze 2671: static int
1.2 schwarze 2672: roff_cond(ROFF_ARGS)
2673: {
1.212 schwarze 2674: int irc;
1.46 schwarze 2675:
2676: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2677:
1.80 schwarze 2678: /*
1.35 schwarze 2679: * An `.el' has no conditional body: it will consume the value
2680: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2681: * defaults to DENY.
1.35 schwarze 2682: *
2683: * If we're not an `el', however, then evaluate the conditional.
2684: */
1.1 schwarze 2685:
1.110 schwarze 2686: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2687: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2688: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2689:
1.35 schwarze 2690: /*
2691: * An if-else will put the NEGATION of the current evaluated
2692: * conditional into the stack of rules.
2693: */
2694:
1.110 schwarze 2695: if (tok == ROFF_ie) {
1.96 schwarze 2696: if (r->rstackpos + 1 == r->rstacksz) {
2697: r->rstacksz += 16;
2698: r->rstack = mandoc_reallocarray(r->rstack,
2699: r->rstacksz, sizeof(int));
1.35 schwarze 2700: }
1.71 schwarze 2701: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2702: }
1.5 schwarze 2703:
2704: /* If the parent has false as its rule, then so do we. */
2705:
1.71 schwarze 2706: if (r->last->parent && !r->last->parent->rule)
2707: r->last->rule = 0;
1.5 schwarze 2708:
2709: /*
1.46 schwarze 2710: * Determine scope.
2711: * If there is nothing on the line after the conditional,
2712: * not even whitespace, use next-line scope.
1.212 schwarze 2713: * Except that .while does not support next-line scope.
1.5 schwarze 2714: */
1.2 schwarze 2715:
1.212 schwarze 2716: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.46 schwarze 2717: r->last->endspan = 2;
2718: goto out;
2719: }
2720:
1.110 schwarze 2721: while (buf->buf[pos] == ' ')
1.46 schwarze 2722: pos++;
2723:
2724: /* An opening brace requests multiline scope. */
1.2 schwarze 2725:
1.110 schwarze 2726: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2727: r->last->endspan = -1;
2728: pos += 2;
1.144 schwarze 2729: while (buf->buf[pos] == ' ')
2730: pos++;
1.46 schwarze 2731: goto out;
1.80 schwarze 2732: }
1.2 schwarze 2733:
2734: /*
1.46 schwarze 2735: * Anything else following the conditional causes
2736: * single-line scope. Warn if the scope contains
2737: * nothing but trailing whitespace.
1.2 schwarze 2738: */
2739:
1.110 schwarze 2740: if (buf->buf[pos] == '\0')
1.222 schwarze 2741: mandoc_msg(MANDOCERR_COND_EMPTY,
2742: ln, ppos, "%s", roff_name[tok]);
1.2 schwarze 2743:
1.46 schwarze 2744: r->last->endspan = 1;
1.1 schwarze 2745:
1.46 schwarze 2746: out:
1.2 schwarze 2747: *offs = pos;
1.212 schwarze 2748: irc = ROFF_RERUN;
2749: if (tok == ROFF_while)
2750: irc |= ROFF_WHILE;
2751: return irc;
1.1 schwarze 2752: }
2753:
1.212 schwarze 2754: static int
1.7 schwarze 2755: roff_ds(ROFF_ARGS)
2756: {
1.85 schwarze 2757: char *string;
2758: const char *name;
2759: size_t namesz;
1.10 schwarze 2760:
1.123 schwarze 2761: /* Ignore groff compatibility mode for now. */
2762:
2763: if (tok == ROFF_ds1)
2764: tok = ROFF_ds;
2765: else if (tok == ROFF_as1)
2766: tok = ROFF_as;
2767:
1.10 schwarze 2768: /*
1.85 schwarze 2769: * The first word is the name of the string.
2770: * If it is empty or terminated by an escape sequence,
2771: * abort the `ds' request without defining anything.
1.10 schwarze 2772: */
1.7 schwarze 2773:
1.110 schwarze 2774: name = string = buf->buf + pos;
2775: if (*name == '\0')
1.149 schwarze 2776: return ROFF_IGN;
1.7 schwarze 2777:
1.85 schwarze 2778: namesz = roff_getname(r, &string, ln, pos);
1.235 schwarze 2779: switch (name[namesz]) {
2780: case '\\':
1.149 schwarze 2781: return ROFF_IGN;
1.235 schwarze 2782: case '\t':
2783: string = buf->buf + pos + namesz;
2784: break;
2785: default:
2786: break;
2787: }
1.85 schwarze 2788:
2789: /* Read past the initial double-quote, if any. */
1.110 schwarze 2790: if (*string == '"')
1.7 schwarze 2791: string++;
2792:
1.10 schwarze 2793: /* The rest is the value. */
1.85 schwarze 2794: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2795: ROFF_as == tok);
1.183 schwarze 2796: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2797: return ROFF_IGN;
1.7 schwarze 2798: }
2799:
1.77 schwarze 2800: /*
2801: * Parse a single operator, one or two characters long.
2802: * If the operator is recognized, return success and advance the
2803: * parse point, else return failure and let the parse point unchanged.
2804: */
2805: static int
2806: roff_getop(const char *v, int *pos, char *res)
2807: {
2808:
2809: *res = v[*pos];
2810:
2811: switch (*res) {
1.80 schwarze 2812: case '+':
2813: case '-':
2814: case '*':
2815: case '/':
2816: case '%':
2817: case '&':
2818: case ':':
1.77 schwarze 2819: break;
2820: case '<':
2821: switch (v[*pos + 1]) {
1.80 schwarze 2822: case '=':
1.77 schwarze 2823: *res = 'l';
2824: (*pos)++;
2825: break;
1.80 schwarze 2826: case '>':
1.77 schwarze 2827: *res = '!';
2828: (*pos)++;
2829: break;
1.80 schwarze 2830: case '?':
1.77 schwarze 2831: *res = 'i';
2832: (*pos)++;
2833: break;
2834: default:
2835: break;
2836: }
2837: break;
2838: case '>':
2839: switch (v[*pos + 1]) {
1.80 schwarze 2840: case '=':
1.77 schwarze 2841: *res = 'g';
2842: (*pos)++;
2843: break;
1.80 schwarze 2844: case '?':
1.77 schwarze 2845: *res = 'a';
2846: (*pos)++;
2847: break;
2848: default:
2849: break;
2850: }
2851: break;
2852: case '=':
2853: if ('=' == v[*pos + 1])
2854: (*pos)++;
2855: break;
2856: default:
1.149 schwarze 2857: return 0;
1.77 schwarze 2858: }
2859: (*pos)++;
2860:
1.149 schwarze 2861: return *res;
1.77 schwarze 2862: }
2863:
2864: /*
2865: * Evaluate either a parenthesized numeric expression
2866: * or a single signed integer number.
2867: */
2868: static int
1.106 schwarze 2869: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2870: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2871: {
2872:
2873: if ('(' != v[*pos])
1.149 schwarze 2874: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2875:
2876: (*pos)++;
1.133 schwarze 2877: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2878: return 0;
1.77 schwarze 2879:
1.79 schwarze 2880: /*
2881: * Omission of the closing parenthesis
2882: * is an error in validation mode,
2883: * but ignored in evaluation mode.
2884: */
2885:
1.77 schwarze 2886: if (')' == v[*pos])
2887: (*pos)++;
1.79 schwarze 2888: else if (NULL == res)
1.149 schwarze 2889: return 0;
1.77 schwarze 2890:
1.149 schwarze 2891: return 1;
1.77 schwarze 2892: }
2893:
2894: /*
2895: * Evaluate a complete numeric expression.
2896: * Proceed left to right, there is no concept of precedence.
2897: */
2898: static int
1.106 schwarze 2899: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2900: int *pos, int *res, int flags)
1.77 schwarze 2901: {
2902: int mypos, operand2;
2903: char operator;
2904:
2905: if (NULL == pos) {
2906: mypos = 0;
2907: pos = &mypos;
2908: }
2909:
1.133 schwarze 2910: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2911: while (isspace((unsigned char)v[*pos]))
2912: (*pos)++;
2913:
1.133 schwarze 2914: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2915: return 0;
1.77 schwarze 2916:
2917: while (1) {
1.133 schwarze 2918: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2919: while (isspace((unsigned char)v[*pos]))
2920: (*pos)++;
2921:
2922: if ( ! roff_getop(v, pos, &operator))
2923: break;
2924:
1.133 schwarze 2925: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2926: while (isspace((unsigned char)v[*pos]))
2927: (*pos)++;
2928:
1.133 schwarze 2929: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2930: return 0;
1.77 schwarze 2931:
1.133 schwarze 2932: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2933: while (isspace((unsigned char)v[*pos]))
2934: (*pos)++;
1.79 schwarze 2935:
2936: if (NULL == res)
2937: continue;
1.77 schwarze 2938:
2939: switch (operator) {
1.80 schwarze 2940: case '+':
1.77 schwarze 2941: *res += operand2;
2942: break;
1.80 schwarze 2943: case '-':
1.77 schwarze 2944: *res -= operand2;
2945: break;
1.80 schwarze 2946: case '*':
1.77 schwarze 2947: *res *= operand2;
2948: break;
1.80 schwarze 2949: case '/':
1.116 schwarze 2950: if (operand2 == 0) {
1.106 schwarze 2951: mandoc_msg(MANDOCERR_DIVZERO,
1.222 schwarze 2952: ln, *pos, "%s", v);
1.106 schwarze 2953: *res = 0;
2954: break;
2955: }
1.77 schwarze 2956: *res /= operand2;
2957: break;
1.80 schwarze 2958: case '%':
1.116 schwarze 2959: if (operand2 == 0) {
2960: mandoc_msg(MANDOCERR_DIVZERO,
1.222 schwarze 2961: ln, *pos, "%s", v);
1.116 schwarze 2962: *res = 0;
2963: break;
2964: }
1.77 schwarze 2965: *res %= operand2;
2966: break;
1.80 schwarze 2967: case '<':
1.77 schwarze 2968: *res = *res < operand2;
2969: break;
1.80 schwarze 2970: case '>':
1.77 schwarze 2971: *res = *res > operand2;
2972: break;
1.80 schwarze 2973: case 'l':
1.77 schwarze 2974: *res = *res <= operand2;
2975: break;
1.80 schwarze 2976: case 'g':
1.77 schwarze 2977: *res = *res >= operand2;
2978: break;
1.80 schwarze 2979: case '=':
1.77 schwarze 2980: *res = *res == operand2;
2981: break;
1.80 schwarze 2982: case '!':
1.77 schwarze 2983: *res = *res != operand2;
2984: break;
1.80 schwarze 2985: case '&':
1.77 schwarze 2986: *res = *res && operand2;
2987: break;
1.80 schwarze 2988: case ':':
1.77 schwarze 2989: *res = *res || operand2;
2990: break;
1.80 schwarze 2991: case 'i':
1.77 schwarze 2992: if (operand2 < *res)
2993: *res = operand2;
2994: break;
1.80 schwarze 2995: case 'a':
1.77 schwarze 2996: if (operand2 > *res)
2997: *res = operand2;
2998: break;
2999: default:
3000: abort();
3001: }
3002: }
1.149 schwarze 3003: return 1;
1.77 schwarze 3004: }
3005:
1.138 schwarze 3006: /* --- register management ------------------------------------------------ */
3007:
1.52 schwarze 3008: void
1.60 schwarze 3009: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 3010: {
1.199 schwarze 3011: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.198 schwarze 3012: }
3013:
3014: static void
3015: roff_setregn(struct roff *r, const char *name, size_t len,
1.199 schwarze 3016: int val, char sign, int step)
1.198 schwarze 3017: {
1.52 schwarze 3018: struct roffreg *reg;
3019:
3020: /* Search for an existing register with the same name. */
3021: reg = r->regtab;
3022:
1.198 schwarze 3023: while (reg != NULL && (reg->key.sz != len ||
3024: strncmp(reg->key.p, name, len) != 0))
1.52 schwarze 3025: reg = reg->next;
1.41 schwarze 3026:
1.52 schwarze 3027: if (NULL == reg) {
3028: /* Create a new register. */
3029: reg = mandoc_malloc(sizeof(struct roffreg));
1.198 schwarze 3030: reg->key.p = mandoc_strndup(name, len);
3031: reg->key.sz = len;
1.60 schwarze 3032: reg->val = 0;
1.199 schwarze 3033: reg->step = 0;
1.52 schwarze 3034: reg->next = r->regtab;
3035: r->regtab = reg;
3036: }
3037:
1.60 schwarze 3038: if ('+' == sign)
3039: reg->val += val;
3040: else if ('-' == sign)
3041: reg->val -= val;
3042: else
3043: reg->val = val;
1.199 schwarze 3044: if (step != INT_MIN)
3045: reg->step = step;
1.41 schwarze 3046: }
3047:
1.65 schwarze 3048: /*
3049: * Handle some predefined read-only number registers.
3050: * For now, return -1 if the requested register is not predefined;
3051: * in case a predefined read-only register having the value -1
3052: * were to turn up, another special value would have to be chosen.
3053: */
3054: static int
1.145 schwarze 3055: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 3056: {
3057:
3058: switch (*name) {
1.145 schwarze 3059: case '$': /* Number of arguments of the last macro evaluated. */
1.211 schwarze 3060: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.80 schwarze 3061: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 3062: return 0;
1.80 schwarze 3063: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 3064: return 1;
1.80 schwarze 3065: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 3066: return 24;
1.80 schwarze 3067: case 'j': /* Always adjust left margin only. */
1.149 schwarze 3068: return 0;
1.80 schwarze 3069: case 'T': /* Some output device is always defined. */
1.149 schwarze 3070: return 1;
1.80 schwarze 3071: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 3072: return 40;
1.65 schwarze 3073: default:
1.149 schwarze 3074: return -1;
1.65 schwarze 3075: }
3076: }
3077:
1.53 schwarze 3078: int
1.198 schwarze 3079: roff_getreg(struct roff *r, const char *name)
1.41 schwarze 3080: {
1.199 schwarze 3081: return roff_getregn(r, name, strlen(name), '\0');
1.53 schwarze 3082: }
3083:
3084: static int
1.199 schwarze 3085: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.53 schwarze 3086: {
3087: struct roffreg *reg;
1.65 schwarze 3088: int val;
3089:
3090: if ('.' == name[0] && 2 == len) {
1.145 schwarze 3091: val = roff_getregro(r, name + 1);
1.65 schwarze 3092: if (-1 != val)
1.149 schwarze 3093: return val;
1.65 schwarze 3094: }
1.53 schwarze 3095:
1.199 schwarze 3096: for (reg = r->regtab; reg; reg = reg->next) {
1.53 schwarze 3097: if (len == reg->key.sz &&
1.199 schwarze 3098: 0 == strncmp(name, reg->key.p, len)) {
3099: switch (sign) {
3100: case '+':
3101: reg->val += reg->step;
3102: break;
3103: case '-':
3104: reg->val -= reg->step;
3105: break;
3106: default:
3107: break;
3108: }
1.149 schwarze 3109: return reg->val;
1.199 schwarze 3110: }
3111: }
1.143 schwarze 3112:
1.199 schwarze 3113: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.149 schwarze 3114: return 0;
1.143 schwarze 3115: }
3116:
3117: static int
3118: roff_hasregn(const struct roff *r, const char *name, size_t len)
3119: {
3120: struct roffreg *reg;
3121: int val;
3122:
3123: if ('.' == name[0] && 2 == len) {
1.145 schwarze 3124: val = roff_getregro(r, name + 1);
1.143 schwarze 3125: if (-1 != val)
1.149 schwarze 3126: return 1;
1.143 schwarze 3127: }
3128:
3129: for (reg = r->regtab; reg; reg = reg->next)
3130: if (len == reg->key.sz &&
3131: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 3132: return 1;
1.41 schwarze 3133:
1.149 schwarze 3134: return 0;
1.41 schwarze 3135: }
3136:
1.52 schwarze 3137: static void
3138: roff_freereg(struct roffreg *reg)
1.41 schwarze 3139: {
1.52 schwarze 3140: struct roffreg *old_reg;
1.41 schwarze 3141:
1.52 schwarze 3142: while (NULL != reg) {
3143: free(reg->key.p);
3144: old_reg = reg;
3145: reg = reg->next;
3146: free(old_reg);
3147: }
1.41 schwarze 3148: }
1.7 schwarze 3149:
1.212 schwarze 3150: static int
1.6 schwarze 3151: roff_nr(ROFF_ARGS)
1.1 schwarze 3152: {
1.199 schwarze 3153: char *key, *val, *step;
1.85 schwarze 3154: size_t keysz;
1.199 schwarze 3155: int iv, is, len;
1.60 schwarze 3156: char sign;
1.6 schwarze 3157:
1.110 schwarze 3158: key = val = buf->buf + pos;
3159: if (*key == '\0')
1.149 schwarze 3160: return ROFF_IGN;
1.85 schwarze 3161:
3162: keysz = roff_getname(r, &val, ln, pos);
1.235 schwarze 3163: if (key[keysz] == '\\' || key[keysz] == '\t')
1.149 schwarze 3164: return ROFF_IGN;
1.6 schwarze 3165:
1.60 schwarze 3166: sign = *val;
1.110 schwarze 3167: if (sign == '+' || sign == '-')
1.60 schwarze 3168: val++;
3169:
1.199 schwarze 3170: len = 0;
3171: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3172: return ROFF_IGN;
3173:
3174: step = val + len;
3175: while (isspace((unsigned char)*step))
3176: step++;
3177: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3178: is = INT_MIN;
1.1 schwarze 3179:
1.199 schwarze 3180: roff_setregn(r, key, keysz, iv, sign, is);
1.149 schwarze 3181: return ROFF_IGN;
1.76 schwarze 3182: }
3183:
1.212 schwarze 3184: static int
1.76 schwarze 3185: roff_rr(ROFF_ARGS)
3186: {
3187: struct roffreg *reg, **prev;
1.85 schwarze 3188: char *name, *cp;
3189: size_t namesz;
1.76 schwarze 3190:
1.110 schwarze 3191: name = cp = buf->buf + pos;
3192: if (*name == '\0')
1.149 schwarze 3193: return ROFF_IGN;
1.85 schwarze 3194: namesz = roff_getname(r, &cp, ln, pos);
3195: name[namesz] = '\0';
1.76 schwarze 3196:
3197: prev = &r->regtab;
3198: while (1) {
3199: reg = *prev;
1.110 schwarze 3200: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 3201: break;
3202: prev = ®->next;
3203: }
1.110 schwarze 3204: if (reg != NULL) {
1.76 schwarze 3205: *prev = reg->next;
3206: free(reg->key.p);
3207: free(reg);
3208: }
1.149 schwarze 3209: return ROFF_IGN;
1.29 schwarze 3210: }
3211:
1.138 schwarze 3212: /* --- handler functions for roff requests -------------------------------- */
3213:
1.212 schwarze 3214: static int
1.29 schwarze 3215: roff_rm(ROFF_ARGS)
3216: {
3217: const char *name;
3218: char *cp;
1.85 schwarze 3219: size_t namesz;
1.29 schwarze 3220:
1.110 schwarze 3221: cp = buf->buf + pos;
3222: while (*cp != '\0') {
1.85 schwarze 3223: name = cp;
1.110 schwarze 3224: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 3225: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 3226: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.235 schwarze 3227: if (name[namesz] == '\\' || name[namesz] == '\t')
1.85 schwarze 3228: break;
1.29 schwarze 3229: }
1.149 schwarze 3230: return ROFF_IGN;
1.51 schwarze 3231: }
3232:
1.212 schwarze 3233: static int
1.51 schwarze 3234: roff_it(ROFF_ARGS)
3235: {
3236: int iv;
3237:
3238: /* Parse the number of lines. */
1.133 schwarze 3239:
3240: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 3241: mandoc_msg(MANDOCERR_IT_NONUM,
3242: ln, ppos, "%s", buf->buf + 1);
1.149 schwarze 3243: return ROFF_IGN;
1.51 schwarze 3244: }
3245:
1.134 schwarze 3246: while (isspace((unsigned char)buf->buf[pos]))
3247: pos++;
3248:
3249: /*
3250: * Arm the input line trap.
3251: * Special-casing "an-trap" is an ugly workaround to cope
3252: * with DocBook stupidly fiddling with man(7) internals.
3253: */
1.133 schwarze 3254:
1.51 schwarze 3255: roffit_lines = iv;
1.134 schwarze 3256: roffit_macro = mandoc_strdup(iv != 1 ||
3257: strcmp(buf->buf + pos, "an-trap") ?
3258: buf->buf + pos : "br");
1.149 schwarze 3259: return ROFF_IGN;
1.47 schwarze 3260: }
3261:
1.212 schwarze 3262: static int
1.47 schwarze 3263: roff_Dd(ROFF_ARGS)
3264: {
1.187 schwarze 3265: int mask;
3266: enum roff_tok t, te;
1.99 schwarze 3267:
1.187 schwarze 3268: switch (tok) {
3269: case ROFF_Dd:
3270: tok = MDOC_Dd;
3271: te = MDOC_MAX;
3272: if (r->format == 0)
3273: r->format = MPARSE_MDOC;
3274: mask = MPARSE_MDOC | MPARSE_QUICK;
3275: break;
3276: case ROFF_TH:
3277: tok = MAN_TH;
3278: te = MAN_MAX;
3279: if (r->format == 0)
3280: r->format = MPARSE_MAN;
3281: mask = MPARSE_QUICK;
3282: break;
3283: default:
3284: abort();
3285: }
3286: if ((r->options & mask) == 0)
3287: for (t = tok; t < te; t++)
3288: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 3289: return ROFF_CONT;
1.14 schwarze 3290: }
3291:
1.212 schwarze 3292: static int
1.27 schwarze 3293: roff_TE(ROFF_ARGS)
3294: {
1.233 schwarze 3295: r->man->flags &= ~ROFF_NONOFILL;
1.193 schwarze 3296: if (r->tbl == NULL) {
1.222 schwarze 3297: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.193 schwarze 3298: return ROFF_IGN;
3299: }
1.218 schwarze 3300: if (tbl_end(r->tbl, 0) == 0) {
1.193 schwarze 3301: r->tbl = NULL;
1.130 schwarze 3302: free(buf->buf);
3303: buf->buf = mandoc_strdup(".sp");
3304: buf->sz = 4;
1.201 schwarze 3305: *offs = 0;
1.149 schwarze 3306: return ROFF_REPARSE;
1.130 schwarze 3307: }
1.193 schwarze 3308: r->tbl = NULL;
1.149 schwarze 3309: return ROFF_IGN;
1.27 schwarze 3310: }
3311:
1.212 schwarze 3312: static int
1.27 schwarze 3313: roff_T_(ROFF_ARGS)
3314: {
3315:
3316: if (NULL == r->tbl)
1.222 schwarze 3317: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.27 schwarze 3318: else
1.168 schwarze 3319: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 3320:
1.149 schwarze 3321: return ROFF_IGN;
1.27 schwarze 3322: }
3323:
1.102 schwarze 3324: /*
3325: * Handle in-line equation delimiters.
3326: */
1.212 schwarze 3327: static int
1.110 schwarze 3328: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 3329: {
1.105 schwarze 3330: char *cp1, *cp2;
3331: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 3332:
1.102 schwarze 3333: /*
3334: * Outside equations, look for an opening delimiter.
3335: * If we are inside an equation, we already know it is
3336: * in-line, or this function wouldn't have been called;
3337: * so look for a closing delimiter.
3338: */
3339:
1.110 schwarze 3340: cp1 = buf->buf + pos;
1.102 schwarze 3341: cp2 = strchr(cp1, r->eqn == NULL ?
3342: r->last_eqn->odelim : r->last_eqn->cdelim);
3343: if (cp2 == NULL)
1.149 schwarze 3344: return ROFF_CONT;
1.102 schwarze 3345:
1.105 schwarze 3346: *cp2++ = '\0';
3347: bef_pr = bef_nl = aft_nl = aft_pr = "";
3348:
3349: /* Handle preceding text, protecting whitespace. */
3350:
1.110 schwarze 3351: if (*buf->buf != '\0') {
1.105 schwarze 3352: if (r->eqn == NULL)
3353: bef_pr = "\\&";
3354: bef_nl = "\n";
3355: }
3356:
3357: /*
3358: * Prepare replacing the delimiter with an equation macro
3359: * and drop leading white space from the equation.
3360: */
1.102 schwarze 3361:
1.105 schwarze 3362: if (r->eqn == NULL) {
3363: while (*cp2 == ' ')
3364: cp2++;
3365: mac = ".EQ";
3366: } else
3367: mac = ".EN";
3368:
3369: /* Handle following text, protecting whitespace. */
3370:
3371: if (*cp2 != '\0') {
3372: aft_nl = "\n";
3373: if (r->eqn != NULL)
3374: aft_pr = "\\&";
3375: }
3376:
3377: /* Do the actual replacement. */
3378:
1.110 schwarze 3379: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 3380: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 3381: free(buf->buf);
3382: buf->buf = cp1;
1.102 schwarze 3383:
3384: /* Toggle the in-line state of the eqn subsystem. */
3385:
3386: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 3387: return ROFF_REPARSE;
1.41 schwarze 3388: }
3389:
1.212 schwarze 3390: static int
1.107 schwarze 3391: roff_EQ(ROFF_ARGS)
1.32 schwarze 3392: {
1.191 schwarze 3393: struct roff_node *n;
3394:
1.228 schwarze 3395: if (r->man->meta.macroset == MACROSET_MAN)
1.194 schwarze 3396: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 3397: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3398: if (ln > r->man->last->line)
3399: n->flags |= NODE_LINE;
1.220 schwarze 3400: n->eqn = eqn_box_new();
1.191 schwarze 3401: roff_node_append(r->man, n);
3402: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 3403:
1.110 schwarze 3404: assert(r->eqn == NULL);
1.191 schwarze 3405: if (r->last_eqn == NULL)
1.223 schwarze 3406: r->last_eqn = eqn_alloc();
1.191 schwarze 3407: else
3408: eqn_reset(r->last_eqn);
3409: r->eqn = r->last_eqn;
3410: r->eqn->node = n;
1.41 schwarze 3411:
1.110 schwarze 3412: if (buf->buf[pos] != '\0')
1.222 schwarze 3413: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 3414: ".EQ %s", buf->buf + pos);
1.41 schwarze 3415:
1.149 schwarze 3416: return ROFF_IGN;
1.32 schwarze 3417: }
3418:
1.212 schwarze 3419: static int
1.32 schwarze 3420: roff_EN(ROFF_ARGS)
3421: {
1.191 schwarze 3422: if (r->eqn != NULL) {
3423: eqn_parse(r->eqn);
3424: r->eqn = NULL;
3425: } else
1.222 schwarze 3426: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.191 schwarze 3427: if (buf->buf[pos] != '\0')
1.222 schwarze 3428: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.191 schwarze 3429: "EN %s", buf->buf + pos);
1.149 schwarze 3430: return ROFF_IGN;
1.32 schwarze 3431: }
3432:
1.212 schwarze 3433: static int
1.27 schwarze 3434: roff_TS(ROFF_ARGS)
3435: {
1.193 schwarze 3436: if (r->tbl != NULL) {
1.222 schwarze 3437: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.218 schwarze 3438: tbl_end(r->tbl, 0);
1.27 schwarze 3439: }
1.233 schwarze 3440: r->man->flags |= ROFF_NONOFILL;
1.223 schwarze 3441: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.218 schwarze 3442: if (r->last_tbl == NULL)
1.193 schwarze 3443: r->first_tbl = r->tbl;
3444: r->last_tbl = r->tbl;
1.169 schwarze 3445: return ROFF_IGN;
3446: }
3447:
1.212 schwarze 3448: static int
1.230 schwarze 3449: roff_noarg(ROFF_ARGS)
3450: {
3451: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3452: man_breakscope(r->man, tok);
3453: if (tok == ROFF_brp)
3454: tok = ROFF_br;
3455: roff_elem_alloc(r->man, ln, ppos, tok);
3456: if (buf->buf[pos] != '\0')
3457: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3458: "%s %s", roff_name[tok], buf->buf + pos);
3459: if (tok == ROFF_nf)
3460: r->man->flags |= ROFF_NOFILL;
3461: else if (tok == ROFF_fi)
3462: r->man->flags &= ~ROFF_NOFILL;
3463: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3464: r->man->next = ROFF_NEXT_SIBLING;
3465: return ROFF_IGN;
3466: }
3467:
3468: static int
1.169 schwarze 3469: roff_onearg(ROFF_ARGS)
3470: {
3471: struct roff_node *n;
3472: char *cp;
1.177 schwarze 3473: int npos;
1.169 schwarze 3474:
1.174 schwarze 3475: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 3476: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3477: tok == ROFF_ti))
1.174 schwarze 3478: man_breakscope(r->man, tok);
3479:
1.181 schwarze 3480: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 3481: r->man->last = roffce_node;
3482: r->man->next = ROFF_NEXT_SIBLING;
3483: }
3484:
1.169 schwarze 3485: roff_elem_alloc(r->man, ln, ppos, tok);
3486: n = r->man->last;
3487:
3488: cp = buf->buf + pos;
3489: if (*cp != '\0') {
3490: while (*cp != '\0' && *cp != ' ')
3491: cp++;
3492: while (*cp == ' ')
3493: *cp++ = '\0';
3494: if (*cp != '\0')
1.222 schwarze 3495: mandoc_msg(MANDOCERR_ARG_EXCESS,
3496: ln, (int)(cp - buf->buf),
1.169 schwarze 3497: "%s ... %s", roff_name[tok], cp);
3498: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 3499: }
3500:
1.181 schwarze 3501: if (tok == ROFF_ce || tok == ROFF_rj) {
3502: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 3503: roff_word_alloc(r->man, ln, pos, "1");
3504: r->man->last->flags |= NODE_NOSRC;
3505: }
3506: npos = 0;
3507: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3508: &roffce_lines, 0) == 0) {
1.222 schwarze 3509: mandoc_msg(MANDOCERR_CE_NONUM,
3510: ln, pos, "ce %s", buf->buf + pos);
1.177 schwarze 3511: roffce_lines = 1;
3512: }
3513: if (roffce_lines < 1) {
3514: r->man->last = r->man->last->parent;
3515: roffce_node = NULL;
3516: roffce_lines = 0;
3517: } else
3518: roffce_node = r->man->last->parent;
3519: } else {
3520: n->flags |= NODE_VALID | NODE_ENDED;
3521: r->man->last = n;
3522: }
3523: n->flags |= NODE_LINE;
1.172 schwarze 3524: r->man->next = ROFF_NEXT_SIBLING;
3525: return ROFF_IGN;
3526: }
3527:
1.212 schwarze 3528: static int
1.172 schwarze 3529: roff_manyarg(ROFF_ARGS)
3530: {
3531: struct roff_node *n;
3532: char *sp, *ep;
3533:
3534: roff_elem_alloc(r->man, ln, ppos, tok);
3535: n = r->man->last;
3536:
3537: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3538: while (*ep != '\0' && *ep != ' ')
3539: ep++;
3540: while (*ep == ' ')
3541: *ep++ = '\0';
3542: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3543: }
3544:
3545: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3546: r->man->last = n;
3547: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3548: return ROFF_IGN;
1.123 schwarze 3549: }
3550:
1.212 schwarze 3551: static int
1.183 schwarze 3552: roff_als(ROFF_ARGS)
3553: {
3554: char *oldn, *newn, *end, *value;
3555: size_t oldsz, newsz, valsz;
3556:
3557: newn = oldn = buf->buf + pos;
3558: if (*newn == '\0')
3559: return ROFF_IGN;
3560:
3561: newsz = roff_getname(r, &oldn, ln, pos);
1.235 schwarze 3562: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.183 schwarze 3563: return ROFF_IGN;
3564:
3565: end = oldn;
3566: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3567: if (oldsz == 0)
3568: return ROFF_IGN;
3569:
1.210 schwarze 3570: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.187 schwarze 3571: (int)oldsz, oldn);
1.183 schwarze 3572: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3573: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3574: free(value);
1.236 schwarze 3575: return ROFF_IGN;
3576: }
3577:
3578: /*
3579: * The .break request only makes sense inside conditionals,
3580: * and that case is already handled in roff_cond_sub().
3581: */
3582: static int
3583: roff_break(ROFF_ARGS)
3584: {
3585: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.168 schwarze 3586: return ROFF_IGN;
1.27 schwarze 3587: }
3588:
1.212 schwarze 3589: static int
1.48 schwarze 3590: roff_cc(ROFF_ARGS)
3591: {
3592: const char *p;
3593:
1.110 schwarze 3594: p = buf->buf + pos;
1.48 schwarze 3595:
1.110 schwarze 3596: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3597: r->control = '\0';
1.48 schwarze 3598:
1.110 schwarze 3599: if (*p != '\0')
1.222 schwarze 3600: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.132 schwarze 3601: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3602:
1.213 schwarze 3603: return ROFF_IGN;
3604: }
3605:
3606: static int
3607: roff_char(ROFF_ARGS)
3608: {
3609: const char *p, *kp, *vp;
3610: size_t ksz, vsz;
3611: int font;
3612:
3613: /* Parse the character to be replaced. */
3614:
3615: kp = buf->buf + pos;
3616: p = kp + 1;
3617: if (*kp == '\0' || (*kp == '\\' &&
3618: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3619: (*p != ' ' && *p != '\0')) {
1.222 schwarze 3620: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.213 schwarze 3621: return ROFF_IGN;
3622: }
3623: ksz = p - kp;
3624: while (*p == ' ')
3625: p++;
3626:
3627: /*
3628: * If the replacement string contains a font escape sequence,
3629: * we have to restore the font at the end.
3630: */
3631:
3632: vp = p;
3633: vsz = strlen(p);
3634: font = 0;
3635: while (*p != '\0') {
3636: if (*p++ != '\\')
3637: continue;
3638: switch (mandoc_escape(&p, NULL, NULL)) {
3639: case ESCAPE_FONT:
3640: case ESCAPE_FONTROMAN:
3641: case ESCAPE_FONTITALIC:
3642: case ESCAPE_FONTBOLD:
3643: case ESCAPE_FONTBI:
1.214 schwarze 3644: case ESCAPE_FONTCW:
1.213 schwarze 3645: case ESCAPE_FONTPREV:
3646: font++;
3647: break;
3648: default:
3649: break;
3650: }
3651: }
3652: if (font > 1)
1.222 schwarze 3653: mandoc_msg(MANDOCERR_CHAR_FONT,
3654: ln, (int)(vp - buf->buf), "%s", vp);
1.213 schwarze 3655:
3656: /*
3657: * Approximate the effect of .char using the .tr tables.
3658: * XXX In groff, .char and .tr interact differently.
3659: */
3660:
3661: if (ksz == 1) {
3662: if (r->xtab == NULL)
3663: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3664: assert((unsigned int)*kp < 128);
3665: free(r->xtab[(int)*kp].p);
3666: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3667: "%s%s", vp, font ? "\fP" : "");
3668: } else {
3669: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3670: if (font)
3671: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3672: }
1.149 schwarze 3673: return ROFF_IGN;
1.48 schwarze 3674: }
3675:
1.212 schwarze 3676: static int
1.175 schwarze 3677: roff_ec(ROFF_ARGS)
3678: {
3679: const char *p;
3680:
3681: p = buf->buf + pos;
3682: if (*p == '\0')
3683: r->escape = '\\';
3684: else {
3685: r->escape = *p;
3686: if (*++p != '\0')
1.222 schwarze 3687: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3688: (int)(p - buf->buf), "ec ... %s", p);
1.175 schwarze 3689: }
3690: return ROFF_IGN;
3691: }
3692:
1.212 schwarze 3693: static int
1.175 schwarze 3694: roff_eo(ROFF_ARGS)
3695: {
3696: r->escape = '\0';
3697: if (buf->buf[pos] != '\0')
1.222 schwarze 3698: mandoc_msg(MANDOCERR_ARG_SKIP,
1.175 schwarze 3699: ln, pos, "eo %s", buf->buf + pos);
3700: return ROFF_IGN;
1.202 schwarze 3701: }
3702:
1.212 schwarze 3703: static int
1.202 schwarze 3704: roff_nop(ROFF_ARGS)
3705: {
3706: while (buf->buf[pos] == ' ')
3707: pos++;
3708: *offs = pos;
3709: return ROFF_RERUN;
1.175 schwarze 3710: }
3711:
1.212 schwarze 3712: static int
1.42 schwarze 3713: roff_tr(ROFF_ARGS)
3714: {
3715: const char *p, *first, *second;
3716: size_t fsz, ssz;
3717: enum mandoc_esc esc;
3718:
1.110 schwarze 3719: p = buf->buf + pos;
1.42 schwarze 3720:
1.110 schwarze 3721: if (*p == '\0') {
1.222 schwarze 3722: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.149 schwarze 3723: return ROFF_IGN;
1.42 schwarze 3724: }
3725:
1.110 schwarze 3726: while (*p != '\0') {
1.42 schwarze 3727: fsz = ssz = 1;
3728:
3729: first = p++;
1.110 schwarze 3730: if (*first == '\\') {
1.42 schwarze 3731: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3732: if (esc == ESCAPE_ERROR) {
1.222 schwarze 3733: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3734: (int)(p - buf->buf), "%s", first);
1.149 schwarze 3735: return ROFF_IGN;
1.42 schwarze 3736: }
3737: fsz = (size_t)(p - first);
3738: }
3739:
3740: second = p++;
1.110 schwarze 3741: if (*second == '\\') {
1.42 schwarze 3742: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3743: if (esc == ESCAPE_ERROR) {
1.222 schwarze 3744: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3745: (int)(p - buf->buf), "%s", second);
1.149 schwarze 3746: return ROFF_IGN;
1.42 schwarze 3747: }
3748: ssz = (size_t)(p - second);
1.110 schwarze 3749: } else if (*second == '\0') {
1.222 schwarze 3750: mandoc_msg(MANDOCERR_TR_ODD, ln,
3751: (int)(first - buf->buf), "tr %s", first);
1.42 schwarze 3752: second = " ";
3753: p--;
3754: }
3755:
3756: if (fsz > 1) {
1.80 schwarze 3757: roff_setstrn(&r->xmbtab, first, fsz,
3758: second, ssz, 0);
1.42 schwarze 3759: continue;
3760: }
3761:
1.110 schwarze 3762: if (r->xtab == NULL)
1.80 schwarze 3763: r->xtab = mandoc_calloc(128,
3764: sizeof(struct roffstr));
1.42 schwarze 3765:
3766: free(r->xtab[(int)*first].p);
3767: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3768: r->xtab[(int)*first].sz = ssz;
3769: }
3770:
1.149 schwarze 3771: return ROFF_IGN;
1.42 schwarze 3772: }
3773:
1.211 schwarze 3774: /*
3775: * Implementation of the .return request.
3776: * There is no need to call roff_userret() from here.
3777: * The read module will call that after rewinding the reader stack
3778: * to the place from where the current macro was called.
3779: */
1.212 schwarze 3780: static int
1.211 schwarze 3781: roff_return(ROFF_ARGS)
3782: {
3783: if (r->mstackpos >= 0)
1.212 schwarze 3784: return ROFF_IGN | ROFF_USERRET;
1.211 schwarze 3785:
1.222 schwarze 3786: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.211 schwarze 3787: return ROFF_IGN;
3788: }
3789:
1.212 schwarze 3790: static int
1.178 schwarze 3791: roff_rn(ROFF_ARGS)
3792: {
3793: const char *value;
3794: char *oldn, *newn, *end;
3795: size_t oldsz, newsz;
1.187 schwarze 3796: int deftype;
1.178 schwarze 3797:
3798: oldn = newn = buf->buf + pos;
3799: if (*oldn == '\0')
3800: return ROFF_IGN;
3801:
3802: oldsz = roff_getname(r, &newn, ln, pos);
1.235 schwarze 3803: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.178 schwarze 3804: return ROFF_IGN;
3805:
3806: end = newn;
3807: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3808: if (newsz == 0)
3809: return ROFF_IGN;
3810:
1.187 schwarze 3811: deftype = ROFFDEF_ANY;
3812: value = roff_getstrn(r, oldn, oldsz, &deftype);
3813: switch (deftype) {
3814: case ROFFDEF_USER:
1.178 schwarze 3815: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3816: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3817: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3818: break;
3819: case ROFFDEF_PRE:
3820: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3821: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3822: break;
3823: case ROFFDEF_REN:
1.178 schwarze 3824: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3825: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3826: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3827: break;
3828: case ROFFDEF_STD:
1.178 schwarze 3829: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3830: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3831: break;
3832: default:
3833: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3834: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3835: break;
3836: }
1.178 schwarze 3837: return ROFF_IGN;
3838: }
3839:
1.212 schwarze 3840: static int
1.211 schwarze 3841: roff_shift(ROFF_ARGS)
3842: {
3843: struct mctx *ctx;
3844: int levels, i;
3845:
3846: levels = 1;
3847: if (buf->buf[pos] != '\0' &&
3848: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.222 schwarze 3849: mandoc_msg(MANDOCERR_CE_NONUM,
1.211 schwarze 3850: ln, pos, "shift %s", buf->buf + pos);
3851: levels = 1;
3852: }
3853: if (r->mstackpos < 0) {
1.222 schwarze 3854: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.211 schwarze 3855: return ROFF_IGN;
3856: }
3857: ctx = r->mstack + r->mstackpos;
3858: if (levels > ctx->argc) {
1.222 schwarze 3859: mandoc_msg(MANDOCERR_SHIFT,
1.211 schwarze 3860: ln, pos, "%d, but max is %d", levels, ctx->argc);
3861: levels = ctx->argc;
3862: }
3863: if (levels == 0)
3864: return ROFF_IGN;
3865: for (i = 0; i < levels; i++)
3866: free(ctx->argv[i]);
3867: ctx->argc -= levels;
3868: for (i = 0; i < ctx->argc; i++)
3869: ctx->argv[i] = ctx->argv[i + levels];
3870: return ROFF_IGN;
3871: }
3872:
1.212 schwarze 3873: static int
1.14 schwarze 3874: roff_so(ROFF_ARGS)
3875: {
1.121 schwarze 3876: char *name, *cp;
1.15 schwarze 3877:
1.110 schwarze 3878: name = buf->buf + pos;
1.222 schwarze 3879: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.14 schwarze 3880:
1.22 schwarze 3881: /*
3882: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3883: * opening anything that's not in our cwd or anything beneath
3884: * it. Thus, explicitly disallow traversing up the file-system
3885: * or using absolute paths.
3886: */
3887:
1.110 schwarze 3888: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.222 schwarze 3889: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.121 schwarze 3890: buf->sz = mandoc_asprintf(&cp,
3891: ".sp\nSee the file %s.\n.sp", name) + 1;
3892: free(buf->buf);
3893: buf->buf = cp;
3894: *offs = 0;
1.149 schwarze 3895: return ROFF_REPARSE;
1.14 schwarze 3896: }
3897:
3898: *offs = pos;
1.149 schwarze 3899: return ROFF_SO;
1.7 schwarze 3900: }
3901:
1.138 schwarze 3902: /* --- user defined strings and macros ------------------------------------ */
3903:
1.212 schwarze 3904: static int
1.16 schwarze 3905: roff_userdef(ROFF_ARGS)
1.12 schwarze 3906: {
1.211 schwarze 3907: struct mctx *ctx;
3908: char *arg, *ap, *dst, *src;
3909: size_t sz;
3910:
1.237 schwarze 3911: /* If the macro is empty, ignore it altogether. */
3912:
3913: if (*r->current_string == '\0')
3914: return ROFF_IGN;
3915:
1.211 schwarze 3916: /* Initialize a new macro stack context. */
3917:
3918: if (++r->mstackpos == r->mstacksz) {
3919: r->mstack = mandoc_recallocarray(r->mstack,
3920: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3921: r->mstacksz += 8;
3922: }
3923: ctx = r->mstack + r->mstackpos;
3924: ctx->argsz = 0;
3925: ctx->argc = 0;
3926: ctx->argv = NULL;
3927:
3928: /*
3929: * Collect pointers to macro argument strings,
3930: * NUL-terminating them and escaping quotes.
3931: */
3932:
3933: src = buf->buf + pos;
3934: while (*src != '\0') {
3935: if (ctx->argc == ctx->argsz) {
3936: ctx->argsz += 8;
3937: ctx->argv = mandoc_reallocarray(ctx->argv,
3938: ctx->argsz, sizeof(*ctx->argv));
3939: }
1.227 schwarze 3940: arg = roff_getarg(r, &src, ln, &pos);
1.211 schwarze 3941: sz = 1; /* For the terminating NUL. */
3942: for (ap = arg; *ap != '\0'; ap++)
3943: sz += *ap == '"' ? 4 : 1;
3944: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3945: for (ap = arg; *ap != '\0'; ap++) {
3946: if (*ap == '"') {
3947: memcpy(dst, "\\(dq", 4);
3948: dst += 4;
3949: } else
3950: *dst++ = *ap;
1.16 schwarze 3951: }
1.211 schwarze 3952: *dst = '\0';
1.227 schwarze 3953: free(arg);
1.209 schwarze 3954: }
3955:
1.211 schwarze 3956: /* Replace the macro invocation by the macro definition. */
1.135 schwarze 3957:
1.110 schwarze 3958: free(buf->buf);
1.211 schwarze 3959: buf->buf = mandoc_strdup(r->current_string);
3960: buf->sz = strlen(buf->buf) + 1;
1.120 schwarze 3961: *offs = 0;
1.16 schwarze 3962:
1.237 schwarze 3963: return buf->buf[buf->sz - 2] == '\n' ?
1.212 schwarze 3964: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.12 schwarze 3965: }
1.28 schwarze 3966:
1.178 schwarze 3967: /*
3968: * Calling a high-level macro that was renamed with .rn.
3969: * r->current_string has already been set up by roff_parse().
3970: */
1.212 schwarze 3971: static int
1.178 schwarze 3972: roff_renamed(ROFF_ARGS)
3973: {
3974: char *nbuf;
3975:
1.187 schwarze 3976: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3977: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3978: free(buf->buf);
3979: buf->buf = nbuf;
1.201 schwarze 3980: *offs = 0;
1.178 schwarze 3981: return ROFF_CONT;
3982: }
3983:
1.234 schwarze 3984: /*
3985: * Measure the length in bytes of the roff identifier at *cpp
3986: * and advance the pointer to the next word.
3987: */
1.85 schwarze 3988: static size_t
1.28 schwarze 3989: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3990: {
3991: char *name, *cp;
1.85 schwarze 3992: size_t namesz;
1.28 schwarze 3993:
3994: name = *cpp;
1.234 schwarze 3995: if (*name == '\0')
1.149 schwarze 3996: return 0;
1.28 schwarze 3997:
1.234 schwarze 3998: /* Advance cp to the byte after the end of the name. */
3999:
1.85 schwarze 4000: for (cp = name; 1; cp++) {
1.234 schwarze 4001: namesz = cp - name;
1.235 schwarze 4002: if (*cp == '\0')
1.85 schwarze 4003: break;
1.235 schwarze 4004: if (*cp == ' ' || *cp == '\t') {
4005: cp++;
4006: break;
4007: }
1.234 schwarze 4008: if (*cp != '\\')
1.28 schwarze 4009: continue;
1.234 schwarze 4010: if (cp[1] == '{' || cp[1] == '}')
1.88 schwarze 4011: break;
1.234 schwarze 4012: if (*++cp == '\\')
1.28 schwarze 4013: continue;
1.222 schwarze 4014: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.97 schwarze 4015: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 4016: mandoc_escape((const char **)&cp, NULL, NULL);
4017: break;
1.28 schwarze 4018: }
4019:
4020: /* Read past spaces. */
1.234 schwarze 4021:
4022: while (*cp == ' ')
1.28 schwarze 4023: cp++;
4024:
4025: *cpp = cp;
1.149 schwarze 4026: return namesz;
1.28 schwarze 4027: }
4028:
1.16 schwarze 4029: /*
4030: * Store *string into the user-defined string called *name.
4031: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 4032: * append == 0: replace mode
4033: * append == 1: single-line append mode
4034: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 4035: */
1.8 schwarze 4036: static void
1.16 schwarze 4037: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 4038: int append)
1.7 schwarze 4039: {
1.187 schwarze 4040: size_t namesz;
1.42 schwarze 4041:
1.187 schwarze 4042: namesz = strlen(name);
4043: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 4044: string ? strlen(string) : 0, append);
1.187 schwarze 4045: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 4046: }
4047:
4048: static void
4049: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 4050: const char *string, size_t stringsz, int append)
1.42 schwarze 4051: {
4052: struct roffkv *n;
4053: char *c;
4054: int i;
4055: size_t oldch, newch;
1.7 schwarze 4056:
1.16 schwarze 4057: /* Search for an existing string with the same name. */
1.42 schwarze 4058: n = *r;
4059:
1.84 schwarze 4060: while (n && (namesz != n->key.sz ||
4061: strncmp(n->key.p, name, namesz)))
1.7 schwarze 4062: n = n->next;
1.8 schwarze 4063:
4064: if (NULL == n) {
1.16 schwarze 4065: /* Create a new string table entry. */
1.42 schwarze 4066: n = mandoc_malloc(sizeof(struct roffkv));
4067: n->key.p = mandoc_strndup(name, namesz);
4068: n->key.sz = namesz;
4069: n->val.p = NULL;
4070: n->val.sz = 0;
4071: n->next = *r;
4072: *r = n;
1.66 schwarze 4073: } else if (0 == append) {
1.42 schwarze 4074: free(n->val.p);
4075: n->val.p = NULL;
4076: n->val.sz = 0;
1.16 schwarze 4077: }
4078:
4079: if (NULL == string)
4080: return;
4081:
4082: /*
4083: * One additional byte for the '\n' in multiline mode,
4084: * and one for the terminating '\0'.
4085: */
1.66 schwarze 4086: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 4087:
4088: if (NULL == n->val.p) {
4089: n->val.p = mandoc_malloc(newch);
4090: *n->val.p = '\0';
1.16 schwarze 4091: oldch = 0;
4092: } else {
1.42 schwarze 4093: oldch = n->val.sz;
4094: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 4095: }
4096:
4097: /* Skip existing content in the destination buffer. */
1.42 schwarze 4098: c = n->val.p + (int)oldch;
1.16 schwarze 4099:
4100: /* Append new content to the destination buffer. */
1.42 schwarze 4101: i = 0;
4102: while (i < (int)stringsz) {
1.16 schwarze 4103: /*
4104: * Rudimentary roff copy mode:
4105: * Handle escaped backslashes.
4106: */
1.42 schwarze 4107: if ('\\' == string[i] && '\\' == string[i + 1])
4108: i++;
4109: *c++ = string[i++];
1.16 schwarze 4110: }
1.8 schwarze 4111:
1.16 schwarze 4112: /* Append terminating bytes. */
1.66 schwarze 4113: if (1 < append)
1.16 schwarze 4114: *c++ = '\n';
1.42 schwarze 4115:
1.16 schwarze 4116: *c = '\0';
1.42 schwarze 4117: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 4118: }
4119:
1.8 schwarze 4120: static const char *
1.197 schwarze 4121: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 4122: int *deftype)
1.7 schwarze 4123: {
1.187 schwarze 4124: const struct roffkv *n;
1.197 schwarze 4125: int found, i;
1.187 schwarze 4126: enum roff_tok tok;
4127:
1.197 schwarze 4128: found = 0;
4129: for (n = r->strtab; n != NULL; n = n->next) {
4130: if (strncmp(name, n->key.p, len) != 0 ||
4131: n->key.p[len] != '\0' || n->val.p == NULL)
4132: continue;
4133: if (*deftype & ROFFDEF_USER) {
4134: *deftype = ROFFDEF_USER;
4135: return n->val.p;
4136: } else {
4137: found = 1;
4138: break;
4139: }
4140: }
4141: for (n = r->rentab; n != NULL; n = n->next) {
4142: if (strncmp(name, n->key.p, len) != 0 ||
4143: n->key.p[len] != '\0' || n->val.p == NULL)
4144: continue;
4145: if (*deftype & ROFFDEF_REN) {
4146: *deftype = ROFFDEF_REN;
4147: return n->val.p;
4148: } else {
4149: found = 1;
4150: break;
1.187 schwarze 4151: }
4152: }
1.197 schwarze 4153: for (i = 0; i < PREDEFS_MAX; i++) {
4154: if (strncmp(name, predefs[i].name, len) != 0 ||
4155: predefs[i].name[len] != '\0')
4156: continue;
4157: if (*deftype & ROFFDEF_PRE) {
4158: *deftype = ROFFDEF_PRE;
4159: return predefs[i].str;
4160: } else {
4161: found = 1;
4162: break;
1.187 schwarze 4163: }
4164: }
1.228 schwarze 4165: if (r->man->meta.macroset != MACROSET_MAN) {
1.197 schwarze 4166: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4167: if (strncmp(name, roff_name[tok], len) != 0 ||
4168: roff_name[tok][len] != '\0')
4169: continue;
4170: if (*deftype & ROFFDEF_STD) {
4171: *deftype = ROFFDEF_STD;
4172: return NULL;
4173: } else {
4174: found = 1;
4175: break;
1.187 schwarze 4176: }
4177: }
4178: }
1.228 schwarze 4179: if (r->man->meta.macroset != MACROSET_MDOC) {
1.197 schwarze 4180: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4181: if (strncmp(name, roff_name[tok], len) != 0 ||
4182: roff_name[tok][len] != '\0')
4183: continue;
4184: if (*deftype & ROFFDEF_STD) {
4185: *deftype = ROFFDEF_STD;
4186: return NULL;
4187: } else {
4188: found = 1;
4189: break;
1.187 schwarze 4190: }
4191: }
1.197 schwarze 4192: }
4193:
4194: if (found == 0 && *deftype != ROFFDEF_ANY) {
4195: if (*deftype & ROFFDEF_REN) {
4196: /*
4197: * This might still be a request,
4198: * so do not treat it as undefined yet.
4199: */
4200: *deftype = ROFFDEF_UNDEF;
4201: return NULL;
1.187 schwarze 4202: }
1.197 schwarze 4203:
4204: /* Using an undefined string defines it to be empty. */
4205:
4206: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4207: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 4208: }
1.197 schwarze 4209:
1.187 schwarze 4210: *deftype = 0;
1.149 schwarze 4211: return NULL;
1.7 schwarze 4212: }
4213:
1.8 schwarze 4214: static void
1.42 schwarze 4215: roff_freestr(struct roffkv *r)
1.7 schwarze 4216: {
1.42 schwarze 4217: struct roffkv *n, *nn;
1.7 schwarze 4218:
1.42 schwarze 4219: for (n = r; n; n = nn) {
4220: free(n->key.p);
4221: free(n->val.p);
1.7 schwarze 4222: nn = n->next;
4223: free(n);
4224: }
1.27 schwarze 4225: }
1.138 schwarze 4226:
4227: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 4228:
4229: /*
4230: * Duplicate an input string, making the appropriate character
4231: * conversations (as stipulated by `tr') along the way.
4232: * Returns a heap-allocated string with all the replacements made.
4233: */
4234: char *
4235: roff_strdup(const struct roff *r, const char *p)
4236: {
4237: const struct roffkv *cp;
4238: char *res;
4239: const char *pp;
4240: size_t ssz, sz;
4241: enum mandoc_esc esc;
4242:
4243: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 4244: return mandoc_strdup(p);
1.42 schwarze 4245: else if ('\0' == *p)
1.149 schwarze 4246: return mandoc_strdup("");
1.42 schwarze 4247:
4248: /*
4249: * Step through each character looking for term matches
4250: * (remember that a `tr' can be invoked with an escape, which is
4251: * a glyph but the escape is multi-character).
4252: * We only do this if the character hash has been initialised
4253: * and the string is >0 length.
4254: */
4255:
4256: res = NULL;
4257: ssz = 0;
4258:
4259: while ('\0' != *p) {
1.161 schwarze 4260: assert((unsigned int)*p < 128);
4261: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 4262: sz = r->xtab[(int)*p].sz;
4263: res = mandoc_realloc(res, ssz + sz + 1);
4264: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4265: ssz += sz;
4266: p++;
4267: continue;
4268: } else if ('\\' != *p) {
4269: res = mandoc_realloc(res, ssz + 2);
4270: res[ssz++] = *p++;
4271: continue;
4272: }
4273:
4274: /* Search for term matches. */
4275: for (cp = r->xmbtab; cp; cp = cp->next)
4276: if (0 == strncmp(p, cp->key.p, cp->key.sz))
4277: break;
4278:
4279: if (NULL != cp) {
4280: /*
4281: * A match has been found.
4282: * Append the match to the array and move
4283: * forward by its keysize.
4284: */
1.80 schwarze 4285: res = mandoc_realloc(res,
4286: ssz + cp->val.sz + 1);
1.42 schwarze 4287: memcpy(res + ssz, cp->val.p, cp->val.sz);
4288: ssz += cp->val.sz;
4289: p += (int)cp->key.sz;
4290: continue;
4291: }
4292:
4293: /*
4294: * Handle escapes carefully: we need to copy
4295: * over just the escape itself, or else we might
4296: * do replacements within the escape itself.
4297: * Make sure to pass along the bogus string.
4298: */
4299: pp = p++;
4300: esc = mandoc_escape(&p, NULL, NULL);
4301: if (ESCAPE_ERROR == esc) {
4302: sz = strlen(pp);
4303: res = mandoc_realloc(res, ssz + sz + 1);
4304: memcpy(res + ssz, pp, sz);
4305: break;
4306: }
1.80 schwarze 4307: /*
4308: * We bail out on bad escapes.
1.42 schwarze 4309: * No need to warn: we already did so when
1.227 schwarze 4310: * roff_expand() was called.
1.42 schwarze 4311: */
4312: sz = (int)(p - pp);
4313: res = mandoc_realloc(res, ssz + sz + 1);
4314: memcpy(res + ssz, pp, sz);
4315: ssz += sz;
4316: }
4317:
4318: res[(int)ssz] = '\0';
1.149 schwarze 4319: return res;
1.99 schwarze 4320: }
4321:
4322: int
4323: roff_getformat(const struct roff *r)
4324: {
4325:
1.149 schwarze 4326: return r->format;
1.48 schwarze 4327: }
4328:
4329: /*
1.80 schwarze 4330: * Find out whether a line is a macro line or not.
1.48 schwarze 4331: * If it is, adjust the current position and return one; if it isn't,
4332: * return zero and don't change the current position.
4333: * If the control character has been set with `.cc', then let that grain
4334: * precedence.
4335: * This is slighly contrary to groff, where using the non-breaking
4336: * control character when `cc' has been invoked will cause the
4337: * non-breaking macro contents to be printed verbatim.
4338: */
4339: int
4340: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4341: {
4342: int pos;
4343:
4344: pos = *ppos;
4345:
1.175 schwarze 4346: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 4347: pos++;
1.175 schwarze 4348: else if (r->control != '\0')
1.149 schwarze 4349: return 0;
1.48 schwarze 4350: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4351: pos += 2;
4352: else if ('.' == cp[pos] || '\'' == cp[pos])
4353: pos++;
4354: else
1.149 schwarze 4355: return 0;
1.48 schwarze 4356:
4357: while (' ' == cp[pos] || '\t' == cp[pos])
4358: pos++;
4359:
4360: *ppos = pos;
1.149 schwarze 4361: return 1;
1.1 schwarze 4362: }
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