Annotation of src/usr.bin/mandoc/roff.c, Revision 1.233
1.233 ! schwarze 1: /* $OpenBSD: roff.c,v 1.232 2019/01/05 00:36:46 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.232 schwarze 4: * Copyright (c) 2010-2015, 2017-2019 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.167 schwarze 23: #include <stddef.h>
24: #include <stdint.h>
1.51 schwarze 25: #include <stdio.h>
1.1 schwarze 26: #include <stdlib.h>
27: #include <string.h>
28:
1.74 schwarze 29: #include "mandoc_aux.h"
1.167 schwarze 30: #include "mandoc_ohash.h"
1.217 schwarze 31: #include "mandoc.h"
1.137 schwarze 32: #include "roff.h"
1.221 schwarze 33: #include "mandoc_parse.h"
1.98 daniel 34: #include "libmandoc.h"
1.138 schwarze 35: #include "roff_int.h"
1.218 schwarze 36: #include "tbl_parse.h"
1.219 schwarze 37: #include "eqn_parse.h"
1.2 schwarze 38:
1.227 schwarze 39: /*
40: * ASCII_ESC is used to signal from roff_getarg() to roff_expand()
41: * that an escape sequence resulted from copy-in processing and
42: * needs to be checked or interpolated. As it is used nowhere
43: * else, it is defined here rather than in a header file.
44: */
45: #define ASCII_ESC 27
46:
1.43 schwarze 47: /* Maximum number of string expansions per line, to break infinite loops. */
48: #define EXPAND_LIMIT 1000
49:
1.187 schwarze 50: /* Types of definitions of macros and strings. */
51: #define ROFFDEF_USER (1 << 1) /* User-defined. */
52: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
53: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
54: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
55: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
56: ROFFDEF_REN | ROFFDEF_STD)
1.197 schwarze 57: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.187 schwarze 58:
1.138 schwarze 59: /* --- data types --------------------------------------------------------- */
60:
1.41 schwarze 61: /*
1.42 schwarze 62: * An incredibly-simple string buffer.
63: */
1.8 schwarze 64: struct roffstr {
1.42 schwarze 65: char *p; /* nil-terminated buffer */
66: size_t sz; /* saved strlen(p) */
67: };
68:
69: /*
70: * A key-value roffstr pair as part of a singly-linked list.
71: */
72: struct roffkv {
73: struct roffstr key;
74: struct roffstr val;
75: struct roffkv *next; /* next in list */
1.8 schwarze 76: };
77:
1.52 schwarze 78: /*
79: * A single number register as part of a singly-linked list.
80: */
81: struct roffreg {
82: struct roffstr key;
1.53 schwarze 83: int val;
1.199 schwarze 84: int step;
1.52 schwarze 85: struct roffreg *next;
86: };
87:
1.167 schwarze 88: /*
89: * Association of request and macro names with token IDs.
90: */
91: struct roffreq {
92: enum roff_tok tok;
93: char name[];
94: };
95:
1.211 schwarze 96: /*
97: * A macro processing context.
98: * More than one is needed when macro calls are nested.
99: */
100: struct mctx {
101: char **argv;
102: int argc;
103: int argsz;
104: };
105:
1.1 schwarze 106: struct roff {
1.168 schwarze 107: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 108: struct roffnode *last; /* leaf of stack */
1.211 schwarze 109: struct mctx *mstack; /* stack of macro contexts */
1.96 schwarze 110: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 111: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 112: struct roffreg *regtab; /* number registers */
1.42 schwarze 113: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 114: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 115: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
116: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 117: const char *current_string; /* value of last called user macro */
1.27 schwarze 118: struct tbl_node *first_tbl; /* first table parsed */
119: struct tbl_node *last_tbl; /* last table parsed */
120: struct tbl_node *tbl; /* current table being parsed */
1.191 schwarze 121: struct eqn_node *last_eqn; /* equation parser */
122: struct eqn_node *eqn; /* active equation parser */
1.102 schwarze 123: int eqn_inline; /* current equation is inline */
1.96 schwarze 124: int options; /* parse options */
1.211 schwarze 125: int mstacksz; /* current size of mstack */
126: int mstackpos; /* position in mstack */
1.96 schwarze 127: int rstacksz; /* current size limit of rstack */
128: int rstackpos; /* position in rstack */
1.99 schwarze 129: int format; /* current file in mdoc or man format */
1.96 schwarze 130: char control; /* control character */
1.175 schwarze 131: char escape; /* escape character */
1.1 schwarze 132: };
133:
134: struct roffnode {
1.166 schwarze 135: enum roff_tok tok; /* type of node */
1.1 schwarze 136: struct roffnode *parent; /* up one in stack */
137: int line; /* parse line */
138: int col; /* parse col */
1.16 schwarze 139: char *name; /* node name, e.g. macro name */
1.2 schwarze 140: char *end; /* end-rules: custom token */
141: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 142: int rule; /* current evaluation rule */
1.1 schwarze 143: };
144:
145: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 146: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 147: struct buf *buf, /* input buffer */ \
1.1 schwarze 148: int ln, /* parse line */ \
1.2 schwarze 149: int ppos, /* original pos in buffer */ \
150: int pos, /* current pos in buffer */ \
151: int *offs /* reset offset of buffer data */
1.1 schwarze 152:
1.212 schwarze 153: typedef int (*roffproc)(ROFF_ARGS);
1.1 schwarze 154:
155: struct roffmac {
1.2 schwarze 156: roffproc proc; /* process new macro */
157: roffproc text; /* process as child text of macro */
158: roffproc sub; /* process as child of macro */
159: int flags;
160: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 161: };
162:
1.37 schwarze 163: struct predef {
164: const char *name; /* predefined input name */
165: const char *str; /* replacement symbol */
166: };
167:
168: #define PREDEF(__name, __str) \
169: { (__name), (__str) },
170:
1.138 schwarze 171: /* --- function prototypes ------------------------------------------------ */
172:
1.212 schwarze 173: static int roffnode_cleanscope(struct roff *);
174: static int roffnode_pop(struct roff *);
1.166 schwarze 175: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 176: const char *, int, int);
1.218 schwarze 177: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.212 schwarze 178: static int roff_als(ROFF_ARGS);
179: static int roff_block(ROFF_ARGS);
180: static int roff_block_text(ROFF_ARGS);
181: static int roff_block_sub(ROFF_ARGS);
182: static int roff_cblock(ROFF_ARGS);
183: static int roff_cc(ROFF_ARGS);
184: static int roff_ccond(struct roff *, int, int);
1.213 schwarze 185: static int roff_char(ROFF_ARGS);
1.212 schwarze 186: static int roff_cond(ROFF_ARGS);
187: static int roff_cond_text(ROFF_ARGS);
188: static int roff_cond_sub(ROFF_ARGS);
189: static int roff_ds(ROFF_ARGS);
190: static int roff_ec(ROFF_ARGS);
191: static int roff_eo(ROFF_ARGS);
192: static int roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 193: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 194: static int roff_evalnum(struct roff *, int,
195: const char *, int *, int *, int);
196: static int roff_evalpar(struct roff *, int,
1.133 schwarze 197: const char *, int *, int *, int);
1.71 schwarze 198: static int roff_evalstrcond(const char *, int *);
1.227 schwarze 199: static int roff_expand(struct roff *, struct buf *,
200: int, int, char);
1.42 schwarze 201: static void roff_free1(struct roff *);
1.52 schwarze 202: static void roff_freereg(struct roffreg *);
1.42 schwarze 203: static void roff_freestr(struct roffkv *);
1.85 schwarze 204: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 205: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 206: static int roff_getop(const char *, int *, char *);
1.199 schwarze 207: static int roff_getregn(struct roff *,
208: const char *, size_t, char);
1.145 schwarze 209: static int roff_getregro(const struct roff *,
210: const char *name);
1.197 schwarze 211: static const char *roff_getstrn(struct roff *,
1.187 schwarze 212: const char *, size_t, int *);
1.143 schwarze 213: static int roff_hasregn(const struct roff *,
214: const char *, size_t);
1.212 schwarze 215: static int roff_insec(ROFF_ARGS);
216: static int roff_it(ROFF_ARGS);
217: static int roff_line_ignore(ROFF_ARGS);
1.137 schwarze 218: static void roff_man_alloc1(struct roff_man *);
219: static void roff_man_free1(struct roff_man *);
1.212 schwarze 220: static int roff_manyarg(ROFF_ARGS);
1.230 schwarze 221: static int roff_noarg(ROFF_ARGS);
1.212 schwarze 222: static int roff_nop(ROFF_ARGS);
223: static int roff_nr(ROFF_ARGS);
224: static int roff_onearg(ROFF_ARGS);
1.166 schwarze 225: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 226: int, int);
1.212 schwarze 227: static int roff_parsetext(struct roff *, struct buf *,
1.177 schwarze 228: int, int *);
1.212 schwarze 229: static int roff_renamed(ROFF_ARGS);
230: static int roff_return(ROFF_ARGS);
231: static int roff_rm(ROFF_ARGS);
232: static int roff_rn(ROFF_ARGS);
233: static int roff_rr(ROFF_ARGS);
1.198 schwarze 234: static void roff_setregn(struct roff *, const char *,
1.199 schwarze 235: size_t, int, char, int);
1.8 schwarze 236: static void roff_setstr(struct roff *,
1.16 schwarze 237: const char *, const char *, int);
1.80 schwarze 238: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 239: size_t, const char *, size_t, int);
1.212 schwarze 240: static int roff_shift(ROFF_ARGS);
241: static int roff_so(ROFF_ARGS);
242: static int roff_tr(ROFF_ARGS);
243: static int roff_Dd(ROFF_ARGS);
244: static int roff_TE(ROFF_ARGS);
245: static int roff_TS(ROFF_ARGS);
246: static int roff_EQ(ROFF_ARGS);
247: static int roff_EN(ROFF_ARGS);
248: static int roff_T_(ROFF_ARGS);
249: static int roff_unsupp(ROFF_ARGS);
250: static int roff_userdef(ROFF_ARGS);
1.1 schwarze 251:
1.138 schwarze 252: /* --- constant data ------------------------------------------------------ */
253:
1.133 schwarze 254: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
255: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
256:
1.166 schwarze 257: const char *__roff_name[MAN_MAX + 1] = {
1.230 schwarze 258: "br", "ce", "fi", "ft",
259: "ll", "mc", "nf",
260: "po", "rj", "sp",
1.184 schwarze 261: "ta", "ti", NULL,
1.166 schwarze 262: "ab", "ad", "af", "aln",
263: "als", "am", "am1", "ami",
264: "ami1", "as", "as1", "asciify",
265: "backtrace", "bd", "bleedat", "blm",
266: "box", "boxa", "bp", "BP",
267: "break", "breakchar", "brnl", "brp",
1.177 schwarze 268: "brpnl", "c2", "cc",
1.166 schwarze 269: "cf", "cflags", "ch", "char",
270: "chop", "class", "close", "CL",
271: "color", "composite", "continue", "cp",
272: "cropat", "cs", "cu", "da",
273: "dch", "Dd", "de", "de1",
274: "defcolor", "dei", "dei1", "device",
275: "devicem", "di", "do", "ds",
276: "ds1", "dwh", "dt", "ec",
277: "ecr", "ecs", "el", "em",
278: "EN", "eo", "EP", "EQ",
279: "errprint", "ev", "evc", "ex",
280: "fallback", "fam", "fc", "fchar",
281: "fcolor", "fdeferlig", "feature", "fkern",
282: "fl", "flig", "fp", "fps",
283: "fschar", "fspacewidth", "fspecial", "ftr",
284: "fzoom", "gcolor", "hc", "hcode",
285: "hidechar", "hla", "hlm", "hpf",
286: "hpfa", "hpfcode", "hw", "hy",
287: "hylang", "hylen", "hym", "hypp",
288: "hys", "ie", "if", "ig",
289: "index", "it", "itc", "IX",
290: "kern", "kernafter", "kernbefore", "kernpair",
291: "lc", "lc_ctype", "lds", "length",
292: "letadj", "lf", "lg", "lhang",
293: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 294: "ls", "lsm", "lt",
1.166 schwarze 295: "mediasize", "minss", "mk", "mso",
296: "na", "ne", "nh", "nhychar",
297: "nm", "nn", "nop", "nr",
298: "nrf", "nroff", "ns", "nx",
299: "open", "opena", "os", "output",
300: "padj", "papersize", "pc", "pev",
301: "pi", "PI", "pl", "pm",
1.184 schwarze 302: "pn", "pnr", "ps",
1.166 schwarze 303: "psbb", "pshape", "pso", "ptr",
304: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 305: "return", "rfschar", "rhang",
1.166 schwarze 306: "rm", "rn", "rnn", "rr",
307: "rs", "rt", "schar", "sentchar",
308: "shc", "shift", "sizes", "so",
309: "spacewidth", "special", "spreadwarn", "ss",
310: "sty", "substring", "sv", "sy",
1.172 schwarze 311: "T&", "tc", "TE",
1.173 schwarze 312: "TH", "tkf", "tl",
1.166 schwarze 313: "tm", "tm1", "tmc", "tr",
314: "track", "transchar", "trf", "trimat",
315: "trin", "trnt", "troff", "TS",
316: "uf", "ul", "unformat", "unwatch",
317: "unwatchn", "vpt", "vs", "warn",
318: "warnscale", "watch", "watchlength", "watchn",
319: "wh", "while", "write", "writec",
320: "writem", "xflag", ".", NULL,
1.178 schwarze 321: NULL, "text",
1.166 schwarze 322: "Dd", "Dt", "Os", "Sh",
323: "Ss", "Pp", "D1", "Dl",
324: "Bd", "Ed", "Bl", "El",
325: "It", "Ad", "An", "Ap",
326: "Ar", "Cd", "Cm", "Dv",
327: "Er", "Ev", "Ex", "Fa",
328: "Fd", "Fl", "Fn", "Ft",
329: "Ic", "In", "Li", "Nd",
330: "Nm", "Op", "Ot", "Pa",
331: "Rv", "St", "Va", "Vt",
332: "Xr", "%A", "%B", "%D",
333: "%I", "%J", "%N", "%O",
334: "%P", "%R", "%T", "%V",
335: "Ac", "Ao", "Aq", "At",
336: "Bc", "Bf", "Bo", "Bq",
337: "Bsx", "Bx", "Db", "Dc",
338: "Do", "Dq", "Ec", "Ef",
339: "Em", "Eo", "Fx", "Ms",
340: "No", "Ns", "Nx", "Ox",
341: "Pc", "Pf", "Po", "Pq",
342: "Qc", "Ql", "Qo", "Qq",
343: "Re", "Rs", "Sc", "So",
344: "Sq", "Sm", "Sx", "Sy",
345: "Tn", "Ux", "Xc", "Xo",
346: "Fo", "Fc", "Oo", "Oc",
347: "Bk", "Ek", "Bt", "Hf",
348: "Fr", "Ud", "Lb", "Lp",
349: "Lk", "Mt", "Brq", "Bro",
350: "Brc", "%C", "Es", "En",
1.171 schwarze 351: "Dx", "%Q", "%U", "Ta",
352: NULL,
1.166 schwarze 353: "TH", "SH", "SS", "TP",
1.204 schwarze 354: "TQ",
1.166 schwarze 355: "LP", "PP", "P", "IP",
356: "HP", "SM", "SB", "BI",
357: "IB", "BR", "RB", "R",
358: "B", "I", "IR", "RI",
359: "RE", "RS", "DT", "UC",
1.169 schwarze 360: "PD", "AT", "in",
1.205 schwarze 361: "SY", "YS", "OP",
362: "EX", "EE", "UR",
1.189 bentley 363: "UE", "MT", "ME", NULL
1.166 schwarze 364: };
365: const char *const *roff_name = __roff_name;
366:
367: static struct roffmac roffs[TOKEN_NONE] = {
1.230 schwarze 368: { roff_noarg, NULL, NULL, 0 }, /* br */
1.177 schwarze 369: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.230 schwarze 370: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.169 schwarze 371: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 372: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 373: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.230 schwarze 374: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.184 schwarze 375: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 376: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 377: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 378: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 379: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 380: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 381: { roff_unsupp, NULL, NULL, 0 }, /* ab */
382: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
383: { roff_line_ignore, NULL, NULL, 0 }, /* af */
384: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 385: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 386: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
387: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
388: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
389: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
390: { roff_ds, NULL, NULL, 0 }, /* as */
391: { roff_ds, NULL, NULL, 0 }, /* as1 */
392: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
393: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
394: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
395: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
396: { roff_unsupp, NULL, NULL, 0 }, /* blm */
397: { roff_unsupp, NULL, NULL, 0 }, /* box */
398: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
399: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
400: { roff_unsupp, NULL, NULL, 0 }, /* BP */
401: { roff_unsupp, NULL, NULL, 0 }, /* break */
402: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
403: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.230 schwarze 404: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.167 schwarze 405: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
406: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
407: { roff_cc, NULL, NULL, 0 }, /* cc */
408: { roff_insec, NULL, NULL, 0 }, /* cf */
409: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
410: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.213 schwarze 411: { roff_char, NULL, NULL, 0 }, /* char */
1.167 schwarze 412: { roff_unsupp, NULL, NULL, 0 }, /* chop */
413: { roff_line_ignore, NULL, NULL, 0 }, /* class */
414: { roff_insec, NULL, NULL, 0 }, /* close */
415: { roff_unsupp, NULL, NULL, 0 }, /* CL */
416: { roff_line_ignore, NULL, NULL, 0 }, /* color */
417: { roff_unsupp, NULL, NULL, 0 }, /* composite */
418: { roff_unsupp, NULL, NULL, 0 }, /* continue */
419: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
420: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
421: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
422: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
423: { roff_unsupp, NULL, NULL, 0 }, /* da */
424: { roff_unsupp, NULL, NULL, 0 }, /* dch */
425: { roff_Dd, NULL, NULL, 0 }, /* Dd */
426: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
427: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
428: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
429: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
430: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
431: { roff_unsupp, NULL, NULL, 0 }, /* device */
432: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
433: { roff_unsupp, NULL, NULL, 0 }, /* di */
434: { roff_unsupp, NULL, NULL, 0 }, /* do */
435: { roff_ds, NULL, NULL, 0 }, /* ds */
436: { roff_ds, NULL, NULL, 0 }, /* ds1 */
437: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
438: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 439: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 440: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
441: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
442: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
443: { roff_unsupp, NULL, NULL, 0 }, /* em */
444: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 445: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 446: { roff_unsupp, NULL, NULL, 0 }, /* EP */
447: { roff_EQ, NULL, NULL, 0 }, /* EQ */
448: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
449: { roff_unsupp, NULL, NULL, 0 }, /* ev */
450: { roff_unsupp, NULL, NULL, 0 }, /* evc */
451: { roff_unsupp, NULL, NULL, 0 }, /* ex */
452: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
453: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
454: { roff_unsupp, NULL, NULL, 0 }, /* fc */
455: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
456: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
457: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
458: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
459: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
460: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
461: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
462: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
463: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
464: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
465: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
466: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
467: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
468: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
469: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
470: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
471: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
472: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
473: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
474: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
475: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
476: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
477: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
478: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
479: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
480: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
481: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
482: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
483: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
484: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
485: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
486: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
487: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
488: { roff_unsupp, NULL, NULL, 0 }, /* index */
489: { roff_it, NULL, NULL, 0 }, /* it */
490: { roff_unsupp, NULL, NULL, 0 }, /* itc */
491: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
492: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
493: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
494: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
495: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
496: { roff_unsupp, NULL, NULL, 0 }, /* lc */
497: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
498: { roff_unsupp, NULL, NULL, 0 }, /* lds */
499: { roff_unsupp, NULL, NULL, 0 }, /* length */
500: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
501: { roff_insec, NULL, NULL, 0 }, /* lf */
502: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
503: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
504: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
505: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
506: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
507: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
508: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
509: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
510: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
511: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
512: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
513: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
514: { roff_insec, NULL, NULL, 0 }, /* mso */
515: { roff_line_ignore, NULL, NULL, 0 }, /* na */
516: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
517: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
518: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
519: { roff_unsupp, NULL, NULL, 0 }, /* nm */
520: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.202 schwarze 521: { roff_nop, NULL, NULL, 0 }, /* nop */
1.167 schwarze 522: { roff_nr, NULL, NULL, 0 }, /* nr */
523: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
524: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
525: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
526: { roff_insec, NULL, NULL, 0 }, /* nx */
527: { roff_insec, NULL, NULL, 0 }, /* open */
528: { roff_insec, NULL, NULL, 0 }, /* opena */
529: { roff_line_ignore, NULL, NULL, 0 }, /* os */
530: { roff_unsupp, NULL, NULL, 0 }, /* output */
531: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
532: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
533: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
534: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
535: { roff_insec, NULL, NULL, 0 }, /* pi */
536: { roff_unsupp, NULL, NULL, 0 }, /* PI */
537: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
538: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
539: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
540: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
541: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
542: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
543: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
544: { roff_insec, NULL, NULL, 0 }, /* pso */
545: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
546: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
547: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
548: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
549: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.211 schwarze 550: { roff_return, NULL, NULL, 0 }, /* return */
1.167 schwarze 551: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
552: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
553: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 554: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 555: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
556: { roff_rr, NULL, NULL, 0 }, /* rr */
557: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
558: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
559: { roff_unsupp, NULL, NULL, 0 }, /* schar */
560: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
561: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.211 schwarze 562: { roff_shift, NULL, NULL, 0 }, /* shift */
1.167 schwarze 563: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
564: { roff_so, NULL, NULL, 0 }, /* so */
565: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
566: { roff_line_ignore, NULL, NULL, 0 }, /* special */
567: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
568: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
569: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
570: { roff_unsupp, NULL, NULL, 0 }, /* substring */
571: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
572: { roff_insec, NULL, NULL, 0 }, /* sy */
573: { roff_T_, NULL, NULL, 0 }, /* T& */
574: { roff_unsupp, NULL, NULL, 0 }, /* tc */
575: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 576: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 577: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
578: { roff_unsupp, NULL, NULL, 0 }, /* tl */
579: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
580: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
581: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
582: { roff_tr, NULL, NULL, 0 }, /* tr */
583: { roff_line_ignore, NULL, NULL, 0 }, /* track */
584: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
585: { roff_insec, NULL, NULL, 0 }, /* trf */
586: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
587: { roff_unsupp, NULL, NULL, 0 }, /* trin */
588: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
589: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
590: { roff_TS, NULL, NULL, 0 }, /* TS */
591: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
592: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
593: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
594: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
595: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
596: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
597: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
598: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
599: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
600: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
601: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
602: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
603: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.212 schwarze 604: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.167 schwarze 605: { roff_insec, NULL, NULL, 0 }, /* write */
606: { roff_insec, NULL, NULL, 0 }, /* writec */
607: { roff_insec, NULL, NULL, 0 }, /* writem */
608: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
609: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 610: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 611: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 612: };
613:
1.37 schwarze 614: /* Array of injected predefined strings. */
615: #define PREDEFS_MAX 38
616: static const struct predef predefs[PREDEFS_MAX] = {
617: #include "predefs.in"
618: };
619:
1.177 schwarze 620: static int roffce_lines; /* number of input lines to center */
621: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 622: static int roffit_lines; /* number of lines to delay */
623: static char *roffit_macro; /* nil-terminated macro line */
624:
1.80 schwarze 625:
1.138 schwarze 626: /* --- request table ------------------------------------------------------ */
627:
1.167 schwarze 628: struct ohash *
629: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 630: {
1.167 schwarze 631: struct ohash *htab;
632: struct roffreq *req;
633: enum roff_tok tok;
634: size_t sz;
635: unsigned int slot;
1.3 schwarze 636:
1.167 schwarze 637: htab = mandoc_malloc(sizeof(*htab));
638: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 639:
1.167 schwarze 640: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 641: if (roff_name[tok] == NULL)
642: continue;
1.167 schwarze 643: sz = strlen(roff_name[tok]);
644: req = mandoc_malloc(sizeof(*req) + sz + 1);
645: req->tok = tok;
646: memcpy(req->name, roff_name[tok], sz + 1);
647: slot = ohash_qlookup(htab, req->name);
648: ohash_insert(htab, slot, req);
1.3 schwarze 649: }
1.167 schwarze 650: return htab;
1.3 schwarze 651: }
652:
1.167 schwarze 653: void
654: roffhash_free(struct ohash *htab)
1.1 schwarze 655: {
1.167 schwarze 656: struct roffreq *req;
657: unsigned int slot;
1.1 schwarze 658:
1.167 schwarze 659: if (htab == NULL)
660: return;
661: for (req = ohash_first(htab, &slot); req != NULL;
662: req = ohash_next(htab, &slot))
663: free(req);
664: ohash_delete(htab);
665: free(htab);
666: }
667:
668: enum roff_tok
669: roffhash_find(struct ohash *htab, const char *name, size_t sz)
670: {
671: struct roffreq *req;
672: const char *end;
673:
674: if (sz) {
675: end = name + sz;
676: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
677: } else
678: req = ohash_find(htab, ohash_qlookup(htab, name));
679: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 680: }
681:
1.138 schwarze 682: /* --- stack of request blocks -------------------------------------------- */
683:
1.1 schwarze 684: /*
685: * Pop the current node off of the stack of roff instructions currently
686: * pending.
687: */
1.212 schwarze 688: static int
1.1 schwarze 689: roffnode_pop(struct roff *r)
690: {
691: struct roffnode *p;
1.212 schwarze 692: int inloop;
1.1 schwarze 693:
1.80 schwarze 694: p = r->last;
1.212 schwarze 695: inloop = p->tok == ROFF_while;
696: r->last = p->parent;
1.16 schwarze 697: free(p->name);
698: free(p->end);
1.1 schwarze 699: free(p);
1.212 schwarze 700: return inloop;
1.1 schwarze 701: }
702:
703: /*
704: * Push a roff node onto the instruction stack. This must later be
705: * removed with roffnode_pop().
706: */
1.11 schwarze 707: static void
1.166 schwarze 708: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 709: int line, int col)
1.1 schwarze 710: {
711: struct roffnode *p;
712:
1.11 schwarze 713: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 714: p->tok = tok;
1.16 schwarze 715: if (name)
716: p->name = mandoc_strdup(name);
1.1 schwarze 717: p->parent = r->last;
718: p->line = line;
719: p->col = col;
1.71 schwarze 720: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 721:
722: r->last = p;
723: }
724:
1.138 schwarze 725: /* --- roff parser state data management ---------------------------------- */
726:
1.1 schwarze 727: static void
728: roff_free1(struct roff *r)
729: {
1.42 schwarze 730: int i;
1.27 schwarze 731:
1.218 schwarze 732: tbl_free(r->first_tbl);
1.27 schwarze 733: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 734:
1.219 schwarze 735: eqn_free(r->last_eqn);
1.191 schwarze 736: r->last_eqn = r->eqn = NULL;
1.32 schwarze 737:
1.211 schwarze 738: while (r->mstackpos >= 0)
739: roff_userret(r);
740:
1.1 schwarze 741: while (r->last)
742: roffnode_pop(r);
1.27 schwarze 743:
1.96 schwarze 744: free (r->rstack);
745: r->rstack = NULL;
746: r->rstacksz = 0;
747: r->rstackpos = -1;
748:
749: roff_freereg(r->regtab);
750: r->regtab = NULL;
751:
1.42 schwarze 752: roff_freestr(r->strtab);
1.178 schwarze 753: roff_freestr(r->rentab);
1.42 schwarze 754: roff_freestr(r->xmbtab);
1.178 schwarze 755: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 756:
757: if (r->xtab)
758: for (i = 0; i < 128; i++)
759: free(r->xtab[i].p);
760: free(r->xtab);
761: r->xtab = NULL;
1.1 schwarze 762: }
763:
764: void
765: roff_reset(struct roff *r)
766: {
767: roff_free1(r);
1.99 schwarze 768: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 769: r->control = '\0';
770: r->escape = '\\';
1.179 schwarze 771: roffce_lines = 0;
772: roffce_node = NULL;
773: roffit_lines = 0;
774: roffit_macro = NULL;
1.1 schwarze 775: }
776:
777: void
778: roff_free(struct roff *r)
779: {
1.211 schwarze 780: int i;
781:
1.1 schwarze 782: roff_free1(r);
1.211 schwarze 783: for (i = 0; i < r->mstacksz; i++)
784: free(r->mstack[i].argv);
785: free(r->mstack);
1.167 schwarze 786: roffhash_free(r->reqtab);
1.1 schwarze 787: free(r);
788: }
789:
790: struct roff *
1.223 schwarze 791: roff_alloc(int options)
1.1 schwarze 792: {
793: struct roff *r;
794:
1.11 schwarze 795: r = mandoc_calloc(1, sizeof(struct roff));
1.200 schwarze 796: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.72 schwarze 797: r->options = options;
1.99 schwarze 798: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.211 schwarze 799: r->mstackpos = -1;
1.2 schwarze 800: r->rstackpos = -1;
1.175 schwarze 801: r->escape = '\\';
1.149 schwarze 802: return r;
1.137 schwarze 803: }
804:
1.138 schwarze 805: /* --- syntax tree state data management ---------------------------------- */
806:
1.137 schwarze 807: static void
808: roff_man_free1(struct roff_man *man)
809: {
1.228 schwarze 810: if (man->meta.first != NULL)
811: roff_node_delete(man, man->meta.first);
1.137 schwarze 812: free(man->meta.msec);
813: free(man->meta.vol);
814: free(man->meta.os);
815: free(man->meta.arch);
816: free(man->meta.title);
817: free(man->meta.name);
818: free(man->meta.date);
1.228 schwarze 819: free(man->meta.sodest);
1.137 schwarze 820: }
821:
1.229 schwarze 822: void
823: roff_state_reset(struct roff_man *man)
824: {
825: man->last = man->meta.first;
826: man->last_es = NULL;
827: man->flags = 0;
828: man->lastsec = man->lastnamed = SEC_NONE;
829: man->next = ROFF_NEXT_CHILD;
830: roff_setreg(man->roff, "nS", 0, '=');
831: }
832:
1.137 schwarze 833: static void
834: roff_man_alloc1(struct roff_man *man)
835: {
836: memset(&man->meta, 0, sizeof(man->meta));
1.228 schwarze 837: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
838: man->meta.first->type = ROFFT_ROOT;
839: man->meta.macroset = MACROSET_NONE;
1.229 schwarze 840: roff_state_reset(man);
1.137 schwarze 841: }
842:
843: void
844: roff_man_reset(struct roff_man *man)
845: {
846: roff_man_free1(man);
847: roff_man_alloc1(man);
848: }
849:
850: void
851: roff_man_free(struct roff_man *man)
852: {
853: roff_man_free1(man);
854: free(man);
855: }
856:
857: struct roff_man *
1.223 schwarze 858: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.137 schwarze 859: {
860: struct roff_man *man;
861:
862: man = mandoc_calloc(1, sizeof(*man));
863: man->roff = roff;
1.188 schwarze 864: man->os_s = os_s;
1.137 schwarze 865: man->quick = quick;
866: roff_man_alloc1(man);
1.168 schwarze 867: roff->man = man;
1.149 schwarze 868: return man;
1.1 schwarze 869: }
870:
1.138 schwarze 871: /* --- syntax tree handling ----------------------------------------------- */
872:
873: struct roff_node *
874: roff_node_alloc(struct roff_man *man, int line, int pos,
875: enum roff_type type, int tok)
876: {
877: struct roff_node *n;
878:
879: n = mandoc_calloc(1, sizeof(*n));
880: n->line = line;
881: n->pos = pos;
882: n->tok = tok;
883: n->type = type;
884: n->sec = man->lastsec;
885:
886: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 887: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 888: else
1.157 schwarze 889: n->flags &= ~NODE_SYNPRETTY;
1.232 schwarze 890: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.231 schwarze 891: n->flags |= NODE_NOFILL;
892: else
893: n->flags &= ~NODE_NOFILL;
1.138 schwarze 894: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 895: n->flags |= NODE_LINE;
1.138 schwarze 896: man->flags &= ~MDOC_NEWLINE;
897:
1.149 schwarze 898: return n;
1.138 schwarze 899: }
900:
901: void
902: roff_node_append(struct roff_man *man, struct roff_node *n)
903: {
904:
905: switch (man->next) {
906: case ROFF_NEXT_SIBLING:
1.153 schwarze 907: if (man->last->next != NULL) {
908: n->next = man->last->next;
909: man->last->next->prev = n;
910: } else
911: man->last->parent->last = n;
1.138 schwarze 912: man->last->next = n;
913: n->prev = man->last;
914: n->parent = man->last->parent;
915: break;
916: case ROFF_NEXT_CHILD:
1.159 schwarze 917: if (man->last->child != NULL) {
918: n->next = man->last->child;
919: man->last->child->prev = n;
920: } else
921: man->last->last = n;
1.138 schwarze 922: man->last->child = n;
923: n->parent = man->last;
924: break;
925: default:
926: abort();
927: }
1.154 schwarze 928: man->last = n;
1.138 schwarze 929:
930: switch (n->type) {
931: case ROFFT_HEAD:
932: n->parent->head = n;
933: break;
934: case ROFFT_BODY:
1.154 schwarze 935: if (n->end != ENDBODY_NOT)
936: return;
1.138 schwarze 937: n->parent->body = n;
938: break;
939: case ROFFT_TAIL:
940: n->parent->tail = n;
941: break;
942: default:
1.154 schwarze 943: return;
1.138 schwarze 944: }
1.154 schwarze 945:
946: /*
947: * Copy over the normalised-data pointer of our parent. Not
948: * everybody has one, but copying a null pointer is fine.
949: */
950:
951: n->norm = n->parent->norm;
952: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 953: }
954:
1.139 schwarze 955: void
956: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
957: {
958: struct roff_node *n;
959:
960: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
961: n->string = roff_strdup(man->roff, word);
962: roff_node_append(man, n);
1.158 schwarze 963: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 964: man->next = ROFF_NEXT_SIBLING;
965: }
966:
967: void
968: roff_word_append(struct roff_man *man, const char *word)
969: {
970: struct roff_node *n;
971: char *addstr, *newstr;
972:
973: n = man->last;
974: addstr = roff_strdup(man->roff, word);
975: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
976: free(addstr);
977: free(n->string);
978: n->string = newstr;
979: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 980: }
981:
982: void
983: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
984: {
985: struct roff_node *n;
986:
987: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
988: roff_node_append(man, n);
989: man->next = ROFF_NEXT_CHILD;
990: }
991:
992: struct roff_node *
993: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
994: {
995: struct roff_node *n;
996:
997: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
998: roff_node_append(man, n);
999: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1000: return n;
1.139 schwarze 1001: }
1002:
1.138 schwarze 1003: struct roff_node *
1004: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1005: {
1006: struct roff_node *n;
1007:
1008: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1009: roff_node_append(man, n);
1010: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1011: return n;
1.138 schwarze 1012: }
1013:
1014: struct roff_node *
1015: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1016: {
1017: struct roff_node *n;
1018:
1019: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1020: roff_node_append(man, n);
1021: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1022: return n;
1.139 schwarze 1023: }
1024:
1.193 schwarze 1025: static void
1.218 schwarze 1026: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.139 schwarze 1027: {
1028: struct roff_node *n;
1.218 schwarze 1029: struct tbl_span *span;
1.139 schwarze 1030:
1.228 schwarze 1031: if (man->meta.macroset == MACROSET_MAN)
1.174 schwarze 1032: man_breakscope(man, ROFF_TS);
1.193 schwarze 1033: while ((span = tbl_span(tbl)) != NULL) {
1.218 schwarze 1034: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.193 schwarze 1035: n->span = span;
1036: roff_node_append(man, n);
1037: n->flags |= NODE_VALID | NODE_ENDED;
1038: man->next = ROFF_NEXT_SIBLING;
1039: }
1.138 schwarze 1040: }
1041:
1042: void
1043: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1044: {
1045:
1046: /* Adjust siblings. */
1047:
1048: if (n->prev)
1049: n->prev->next = n->next;
1050: if (n->next)
1051: n->next->prev = n->prev;
1052:
1053: /* Adjust parent. */
1054:
1055: if (n->parent != NULL) {
1056: if (n->parent->child == n)
1057: n->parent->child = n->next;
1058: if (n->parent->last == n)
1059: n->parent->last = n->prev;
1060: }
1061:
1062: /* Adjust parse point. */
1063:
1064: if (man == NULL)
1065: return;
1066: if (man->last == n) {
1067: if (n->prev == NULL) {
1068: man->last = n->parent;
1069: man->next = ROFF_NEXT_CHILD;
1070: } else {
1071: man->last = n->prev;
1072: man->next = ROFF_NEXT_SIBLING;
1073: }
1074: }
1.228 schwarze 1075: if (man->meta.first == n)
1076: man->meta.first = NULL;
1.216 schwarze 1077: }
1078:
1079: void
1080: roff_node_relink(struct roff_man *man, struct roff_node *n)
1081: {
1082: roff_node_unlink(man, n);
1083: n->prev = n->next = NULL;
1084: roff_node_append(man, n);
1.138 schwarze 1085: }
1086:
1087: void
1088: roff_node_free(struct roff_node *n)
1089: {
1090:
1091: if (n->args != NULL)
1092: mdoc_argv_free(n->args);
1093: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1094: free(n->norm);
1.219 schwarze 1095: eqn_box_free(n->eqn);
1.138 schwarze 1096: free(n->string);
1097: free(n);
1098: }
1099:
1100: void
1101: roff_node_delete(struct roff_man *man, struct roff_node *n)
1102: {
1103:
1104: while (n->child != NULL)
1105: roff_node_delete(man, n->child);
1106: roff_node_unlink(man, n);
1107: roff_node_free(n);
1.141 schwarze 1108: }
1109:
1110: void
1111: deroff(char **dest, const struct roff_node *n)
1112: {
1113: char *cp;
1114: size_t sz;
1115:
1116: if (n->type != ROFFT_TEXT) {
1117: for (n = n->child; n != NULL; n = n->next)
1118: deroff(dest, n);
1119: return;
1120: }
1121:
1.160 schwarze 1122: /* Skip leading whitespace. */
1.141 schwarze 1123:
1.160 schwarze 1124: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1125: if (cp[0] == '\\' && cp[1] != '\0' &&
1126: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1127: cp++;
1.160 schwarze 1128: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1129: break;
1130: }
1131:
1.161 schwarze 1132: /* Skip trailing backslash. */
1133:
1134: sz = strlen(cp);
1.162 schwarze 1135: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1136: sz--;
1137:
1.141 schwarze 1138: /* Skip trailing whitespace. */
1139:
1.161 schwarze 1140: for (; sz; sz--)
1.141 schwarze 1141: if ( ! isspace((unsigned char)cp[sz-1]))
1142: break;
1143:
1144: /* Skip empty strings. */
1145:
1146: if (sz == 0)
1147: return;
1148:
1149: if (*dest == NULL) {
1150: *dest = mandoc_strndup(cp, sz);
1151: return;
1152: }
1153:
1154: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1155: free(*dest);
1156: *dest = cp;
1.138 schwarze 1157: }
1158:
1159: /* --- main functions of the roff parser ---------------------------------- */
1160:
1.8 schwarze 1161: /*
1.227 schwarze 1162: * In the current line, expand escape sequences that produce parsable
1163: * input text. Also check the syntax of the remaining escape sequences,
1164: * which typically produce output glyphs or change formatter state.
1.8 schwarze 1165: */
1.212 schwarze 1166: static int
1.227 schwarze 1167: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char newesc)
1.8 schwarze 1168: {
1.211 schwarze 1169: struct mctx *ctx; /* current macro call context */
1.81 schwarze 1170: char ubuf[24]; /* buffer to print the number */
1.200 schwarze 1171: struct roff_node *n; /* used for header comments */
1.78 schwarze 1172: const char *start; /* start of the string to process */
1.82 schwarze 1173: char *stesc; /* start of an escape sequence ('\\') */
1.224 schwarze 1174: const char *esct; /* type of esccape sequence */
1.200 schwarze 1175: char *ep; /* end of comment string */
1.23 schwarze 1176: const char *stnam; /* start of the name, after "[(*" */
1177: const char *cp; /* end of the name, e.g. before ']' */
1178: const char *res; /* the string to be substituted */
1.110 schwarze 1179: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1180: size_t maxl; /* expected length of the escape name */
1181: size_t naml; /* actual length of the escape name */
1.211 schwarze 1182: size_t asz; /* length of the replacement */
1183: size_t rsz; /* length of the rest of the string */
1.109 schwarze 1184: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1185: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1186: int npos; /* position in numeric expression */
1.91 schwarze 1187: int arg_complete; /* argument not interrupted by eol */
1.211 schwarze 1188: int quote_args; /* true for \\$@, false for \\$* */
1.175 schwarze 1189: int done; /* no more input available */
1.187 schwarze 1190: int deftype; /* type of definition to paste */
1.195 schwarze 1191: int rcsid; /* kind of RCS id seen */
1.224 schwarze 1192: enum mandocerr err; /* for escape sequence problems */
1.199 schwarze 1193: char sign; /* increment number register */
1.79 schwarze 1194: char term; /* character terminating the escape */
1.8 schwarze 1195:
1.175 schwarze 1196: /* Search forward for comments. */
1197:
1198: done = 0;
1199: start = buf->buf + pos;
1200: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1.227 schwarze 1201: if (stesc[0] != newesc || stesc[1] == '\0')
1.175 schwarze 1202: continue;
1203: stesc++;
1204: if (*stesc != '"' && *stesc != '#')
1205: continue;
1.185 schwarze 1206:
1207: /* Comment found, look for RCS id. */
1208:
1.195 schwarze 1209: rcsid = 0;
1.185 schwarze 1210: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.195 schwarze 1211: rcsid = 1 << MANDOC_OS_OPENBSD;
1.185 schwarze 1212: cp += 8;
1213: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.195 schwarze 1214: rcsid = 1 << MANDOC_OS_NETBSD;
1.185 schwarze 1215: cp += 7;
1216: }
1217: if (cp != NULL &&
1218: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1219: strchr(cp, '$') != NULL) {
1.195 schwarze 1220: if (r->man->meta.rcsids & rcsid)
1.222 schwarze 1221: mandoc_msg(MANDOCERR_RCS_REP, ln,
1222: (int)(stesc - buf->buf) + 1,
1223: "%s", stesc + 1);
1.195 schwarze 1224: r->man->meta.rcsids |= rcsid;
1.186 schwarze 1225: }
1.185 schwarze 1226:
1227: /* Handle trailing whitespace. */
1228:
1.200 schwarze 1229: ep = strchr(stesc--, '\0') - 1;
1230: if (*ep == '\n') {
1.175 schwarze 1231: done = 1;
1.200 schwarze 1232: ep--;
1.175 schwarze 1233: }
1.200 schwarze 1234: if (*ep == ' ' || *ep == '\t')
1.222 schwarze 1235: mandoc_msg(MANDOCERR_SPACE_EOL,
1236: ln, (int)(ep - buf->buf), NULL);
1.200 schwarze 1237:
1238: /*
1239: * Save comments preceding the title macro
1240: * in the syntax tree.
1241: */
1242:
1.227 schwarze 1243: if (newesc != ASCII_ESC && r->format == 0) {
1.200 schwarze 1244: while (*ep == ' ' || *ep == '\t')
1245: ep--;
1246: ep[1] = '\0';
1247: n = roff_node_alloc(r->man,
1248: ln, stesc + 1 - buf->buf,
1249: ROFFT_COMMENT, TOKEN_NONE);
1250: n->string = mandoc_strdup(stesc + 2);
1251: roff_node_append(r->man, n);
1252: n->flags |= NODE_VALID | NODE_ENDED;
1253: r->man->next = ROFF_NEXT_SIBLING;
1254: }
1255:
1.206 schwarze 1256: /* Line continuation with comment. */
1257:
1258: if (stesc[1] == '#') {
1259: *stesc = '\0';
1.212 schwarze 1260: return ROFF_IGN | ROFF_APPEND;
1.206 schwarze 1261: }
1262:
1263: /* Discard normal comments. */
1.200 schwarze 1264:
1.207 schwarze 1265: while (stesc > start && stesc[-1] == ' ' &&
1266: (stesc == start + 1 || stesc[-2] != '\\'))
1.175 schwarze 1267: stesc--;
1268: *stesc = '\0';
1269: break;
1270: }
1271: if (stesc == start)
1272: return ROFF_CONT;
1273: stesc--;
1274:
1275: /* Notice the end of the input. */
1276:
1277: if (*stesc == '\n') {
1278: *stesc-- = '\0';
1279: done = 1;
1280: }
1281:
1.43 schwarze 1282: expand_count = 0;
1.175 schwarze 1283: while (stesc >= start) {
1.227 schwarze 1284: if (*stesc != newesc) {
1.43 schwarze 1285:
1.227 schwarze 1286: /*
1287: * If we have a non-standard escape character,
1288: * escape literal backslashes because all
1289: * processing in subsequent functions uses
1290: * the standard escaping rules.
1291: */
1.78 schwarze 1292:
1.227 schwarze 1293: if (newesc != ASCII_ESC && *stesc == '\\') {
1.175 schwarze 1294: *stesc = '\0';
1295: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1296: buf->buf, stesc + 1) + 1;
1297: start = nbuf + pos;
1298: stesc = nbuf + (stesc - buf->buf);
1299: free(buf->buf);
1300: buf->buf = nbuf;
1301: }
1.227 schwarze 1302:
1303: /* Search backwards for the next escape. */
1304:
1.175 schwarze 1305: stesc--;
1.78 schwarze 1306: continue;
1.175 schwarze 1307: }
1.78 schwarze 1308:
1309: /* If it is escaped, skip it. */
1310:
1311: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1312: if (*cp != r->escape)
1.78 schwarze 1313: break;
1314:
1.110 schwarze 1315: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1316: while (stesc > cp)
1317: *stesc-- = '\\';
1.78 schwarze 1318: continue;
1.175 schwarze 1319: } else if (stesc[1] != '\0') {
1320: *stesc = '\\';
1321: } else {
1322: *stesc-- = '\0';
1323: if (done)
1324: continue;
1325: else
1.212 schwarze 1326: return ROFF_IGN | ROFF_APPEND;
1.78 schwarze 1327: }
1.23 schwarze 1328:
1.79 schwarze 1329: /* Decide whether to expand or to check only. */
1.23 schwarze 1330:
1.79 schwarze 1331: term = '\0';
1.78 schwarze 1332: cp = stesc + 1;
1.224 schwarze 1333: if (*cp == 'E')
1334: cp++;
1335: esct = cp;
1336: switch (*esct) {
1.80 schwarze 1337: case '*':
1.211 schwarze 1338: case '$':
1.53 schwarze 1339: res = NULL;
1340: break;
1.80 schwarze 1341: case 'B':
1342: case 'w':
1.79 schwarze 1343: term = cp[1];
1344: /* FALLTHROUGH */
1.80 schwarze 1345: case 'n':
1.199 schwarze 1346: sign = cp[1];
1347: if (sign == '+' || sign == '-')
1348: cp++;
1.53 schwarze 1349: res = ubuf;
1350: break;
1351: default:
1.224 schwarze 1352: err = MANDOCERR_OK;
1353: switch(mandoc_escape(&cp, &stnam, &inaml)) {
1354: case ESCAPE_SPECIAL:
1355: if (mchars_spec2cp(stnam, inaml) >= 0)
1356: break;
1357: /* FALLTHROUGH */
1358: case ESCAPE_ERROR:
1359: err = MANDOCERR_ESC_BAD;
1360: break;
1361: case ESCAPE_UNDEF:
1362: err = MANDOCERR_ESC_UNDEF;
1363: break;
1364: case ESCAPE_UNSUPP:
1365: err = MANDOCERR_ESC_UNSUPP;
1366: break;
1367: default:
1368: break;
1369: }
1370: if (err != MANDOCERR_OK)
1371: mandoc_msg(err, ln, (int)(stesc - buf->buf),
1.92 schwarze 1372: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1373: stesc--;
1.78 schwarze 1374: continue;
1.42 schwarze 1375: }
1376:
1.78 schwarze 1377: if (EXPAND_LIMIT < ++expand_count) {
1.222 schwarze 1378: mandoc_msg(MANDOCERR_ROFFLOOP,
1.110 schwarze 1379: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1380: return ROFF_IGN;
1.78 schwarze 1381: }
1.23 schwarze 1382:
1383: /*
1384: * The third character decides the length
1.53 schwarze 1385: * of the name of the string or register.
1.23 schwarze 1386: * Save a pointer to the name.
1387: */
1388:
1.110 schwarze 1389: if (term == '\0') {
1.79 schwarze 1390: switch (*++cp) {
1.80 schwarze 1391: case '\0':
1.79 schwarze 1392: maxl = 0;
1393: break;
1.80 schwarze 1394: case '(':
1.79 schwarze 1395: cp++;
1396: maxl = 2;
1397: break;
1.80 schwarze 1398: case '[':
1.79 schwarze 1399: cp++;
1400: term = ']';
1401: maxl = 0;
1402: break;
1403: default:
1404: maxl = 1;
1405: break;
1406: }
1407: } else {
1408: cp += 2;
1.8 schwarze 1409: maxl = 0;
1410: }
1.23 schwarze 1411: stnam = cp;
1.8 schwarze 1412:
1.23 schwarze 1413: /* Advance to the end of the name. */
1.8 schwarze 1414:
1.125 schwarze 1415: naml = 0;
1.91 schwarze 1416: arg_complete = 1;
1.125 schwarze 1417: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1418: if (*cp == '\0') {
1.222 schwarze 1419: mandoc_msg(MANDOCERR_ESC_BAD, ln,
1420: (int)(stesc - buf->buf), "%s", stesc);
1.91 schwarze 1421: arg_complete = 0;
1.79 schwarze 1422: break;
1.42 schwarze 1423: }
1.110 schwarze 1424: if (maxl == 0 && *cp == term) {
1.79 schwarze 1425: cp++;
1.125 schwarze 1426: break;
1427: }
1.224 schwarze 1428: if (*cp++ != '\\' || *esct != 'w') {
1.125 schwarze 1429: naml++;
1430: continue;
1431: }
1432: switch (mandoc_escape(&cp, NULL, NULL)) {
1433: case ESCAPE_SPECIAL:
1434: case ESCAPE_UNICODE:
1435: case ESCAPE_NUMBERED:
1.224 schwarze 1436: case ESCAPE_UNDEF:
1.125 schwarze 1437: case ESCAPE_OVERSTRIKE:
1438: naml++;
1439: break;
1440: default:
1.8 schwarze 1441: break;
1.79 schwarze 1442: }
1.8 schwarze 1443: }
1444:
1.23 schwarze 1445: /*
1446: * Retrieve the replacement string; if it is
1447: * undefined, resume searching for escapes.
1448: */
1449:
1.224 schwarze 1450: switch (*esct) {
1.80 schwarze 1451: case '*':
1.187 schwarze 1452: if (arg_complete) {
1453: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1454: res = roff_getstrn(r, stnam, naml, &deftype);
1.203 schwarze 1455:
1456: /*
1457: * If not overriden, let \*(.T
1458: * through to the formatters.
1459: */
1460:
1461: if (res == NULL && naml == 2 &&
1462: stnam[0] == '.' && stnam[1] == 'T') {
1463: roff_setstrn(&r->strtab,
1464: ".T", 2, NULL, 0, 0);
1465: stesc--;
1466: continue;
1467: }
1.187 schwarze 1468: }
1.79 schwarze 1469: break;
1.211 schwarze 1470: case '$':
1471: if (r->mstackpos < 0) {
1.222 schwarze 1472: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
1473: (int)(stesc - buf->buf), "%.3s", stesc);
1.211 schwarze 1474: break;
1475: }
1476: ctx = r->mstack + r->mstackpos;
1.224 schwarze 1477: npos = esct[1] - '1';
1.211 schwarze 1478: if (npos >= 0 && npos <= 8) {
1479: res = npos < ctx->argc ?
1480: ctx->argv[npos] : "";
1481: break;
1482: }
1.224 schwarze 1483: if (esct[1] == '*')
1.211 schwarze 1484: quote_args = 0;
1.224 schwarze 1485: else if (esct[1] == '@')
1.211 schwarze 1486: quote_args = 1;
1487: else {
1.222 schwarze 1488: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
1489: (int)(stesc - buf->buf), "%.3s", stesc);
1.211 schwarze 1490: break;
1491: }
1492: asz = 0;
1493: for (npos = 0; npos < ctx->argc; npos++) {
1494: if (npos)
1495: asz++; /* blank */
1496: if (quote_args)
1497: asz += 2; /* quotes */
1498: asz += strlen(ctx->argv[npos]);
1499: }
1500: if (asz != 3) {
1501: rsz = buf->sz - (stesc - buf->buf) - 3;
1502: if (asz < 3)
1503: memmove(stesc + asz, stesc + 3, rsz);
1504: buf->sz += asz - 3;
1505: nbuf = mandoc_realloc(buf->buf, buf->sz);
1506: start = nbuf + pos;
1507: stesc = nbuf + (stesc - buf->buf);
1508: buf->buf = nbuf;
1509: if (asz > 3)
1510: memmove(stesc + asz, stesc + 3, rsz);
1511: }
1512: for (npos = 0; npos < ctx->argc; npos++) {
1513: if (npos)
1514: *stesc++ = ' ';
1515: if (quote_args)
1516: *stesc++ = '"';
1517: cp = ctx->argv[npos];
1518: while (*cp != '\0')
1519: *stesc++ = *cp++;
1520: if (quote_args)
1521: *stesc++ = '"';
1522: }
1523: continue;
1.80 schwarze 1524: case 'B':
1.79 schwarze 1525: npos = 0;
1.91 schwarze 1526: ubuf[0] = arg_complete &&
1.133 schwarze 1527: roff_evalnum(r, ln, stnam, &npos,
1528: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1529: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1530: ubuf[1] = '\0';
1531: break;
1.80 schwarze 1532: case 'n':
1.91 schwarze 1533: if (arg_complete)
1534: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.199 schwarze 1535: roff_getregn(r, stnam, naml, sign));
1.91 schwarze 1536: else
1537: ubuf[0] = '\0';
1.79 schwarze 1538: break;
1.80 schwarze 1539: case 'w':
1.91 schwarze 1540: /* use even incomplete args */
1.81 schwarze 1541: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1542: 24 * (int)naml);
1543: break;
1544: }
1.8 schwarze 1545:
1.110 schwarze 1546: if (res == NULL) {
1.224 schwarze 1547: if (*esct == '*')
1.222 schwarze 1548: mandoc_msg(MANDOCERR_STR_UNDEF,
1549: ln, (int)(stesc - buf->buf),
1.211 schwarze 1550: "%.*s", (int)naml, stnam);
1.37 schwarze 1551: res = "";
1.118 schwarze 1552: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.222 schwarze 1553: mandoc_msg(MANDOCERR_ROFFLOOP,
1.118 schwarze 1554: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1555: return ROFF_IGN;
1.8 schwarze 1556: }
1557:
1.23 schwarze 1558: /* Replace the escape sequence by the string. */
1559:
1.82 schwarze 1560: *stesc = '\0';
1.110 schwarze 1561: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1562: buf->buf, res, cp) + 1;
1.8 schwarze 1563:
1.78 schwarze 1564: /* Prepare for the next replacement. */
1.8 schwarze 1565:
1.78 schwarze 1566: start = nbuf + pos;
1.110 schwarze 1567: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1568: free(buf->buf);
1569: buf->buf = nbuf;
1.42 schwarze 1570: }
1.149 schwarze 1571: return ROFF_CONT;
1.42 schwarze 1572: }
1.225 schwarze 1573:
1574: /*
1575: * Parse a quoted or unquoted roff-style request or macro argument.
1576: * Return a pointer to the parsed argument, which is either the original
1577: * pointer or advanced by one byte in case the argument is quoted.
1578: * NUL-terminate the argument in place.
1579: * Collapse pairs of quotes inside quoted arguments.
1580: * Advance the argument pointer to the next argument,
1581: * or to the NUL byte terminating the argument line.
1582: */
1583: char *
1.227 schwarze 1584: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.225 schwarze 1585: {
1.227 schwarze 1586: struct buf buf;
1587: char *cp, *start;
1588: int newesc, pairs, quoted, white;
1.225 schwarze 1589:
1590: /* Quoting can only start with a new word. */
1591: start = *cpp;
1592: quoted = 0;
1593: if ('"' == *start) {
1594: quoted = 1;
1595: start++;
1596: }
1597:
1.227 schwarze 1598: newesc = pairs = white = 0;
1.225 schwarze 1599: for (cp = start; '\0' != *cp; cp++) {
1600:
1601: /*
1602: * Move the following text left
1603: * after quoted quotes and after "\\" and "\t".
1604: */
1605: if (pairs)
1606: cp[-pairs] = cp[0];
1607:
1608: if ('\\' == cp[0]) {
1609: /*
1610: * In copy mode, translate double to single
1611: * backslashes and backslash-t to literal tabs.
1612: */
1613: switch (cp[1]) {
1614: case 'a':
1615: case 't':
1.226 schwarze 1616: cp[-pairs] = '\t';
1.227 schwarze 1617: pairs++;
1618: cp++;
1619: break;
1.225 schwarze 1620: case '\\':
1.227 schwarze 1621: newesc = 1;
1622: cp[-pairs] = ASCII_ESC;
1.225 schwarze 1623: pairs++;
1624: cp++;
1625: break;
1626: case ' ':
1627: /* Skip escaped blanks. */
1628: if (0 == quoted)
1629: cp++;
1630: break;
1631: default:
1632: break;
1633: }
1634: } else if (0 == quoted) {
1635: if (' ' == cp[0]) {
1636: /* Unescaped blanks end unquoted args. */
1637: white = 1;
1638: break;
1639: }
1640: } else if ('"' == cp[0]) {
1641: if ('"' == cp[1]) {
1642: /* Quoted quotes collapse. */
1643: pairs++;
1644: cp++;
1645: } else {
1646: /* Unquoted quotes end quoted args. */
1647: quoted = 2;
1648: break;
1649: }
1650: }
1651: }
1652:
1653: /* Quoted argument without a closing quote. */
1654: if (1 == quoted)
1655: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1656:
1657: /* NUL-terminate this argument and move to the next one. */
1658: if (pairs)
1659: cp[-pairs] = '\0';
1660: if ('\0' != *cp) {
1661: *cp++ = '\0';
1662: while (' ' == *cp)
1663: cp++;
1664: }
1665: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1666: *cpp = cp;
1667:
1668: if ('\0' == *cp && (white || ' ' == cp[-1]))
1669: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1670:
1.227 schwarze 1671: start = mandoc_strdup(start);
1672: if (newesc == 0)
1673: return start;
1674:
1675: buf.buf = start;
1676: buf.sz = strlen(start) + 1;
1677: buf.next = NULL;
1678: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1679: free(buf.buf);
1680: buf.buf = mandoc_strdup("");
1681: }
1682: return buf.buf;
1.225 schwarze 1683: }
1684:
1.42 schwarze 1685:
1686: /*
1.147 schwarze 1687: * Process text streams.
1.42 schwarze 1688: */
1.212 schwarze 1689: static int
1.177 schwarze 1690: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1691: {
1692: size_t sz;
1693: const char *start;
1.51 schwarze 1694: char *p;
1695: int isz;
1.42 schwarze 1696: enum mandoc_esc esc;
1697:
1.147 schwarze 1698: /* Spring the input line trap. */
1699:
1700: if (roffit_lines == 1) {
1701: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1702: free(buf->buf);
1703: buf->buf = p;
1704: buf->sz = isz + 1;
1705: *offs = 0;
1706: free(roffit_macro);
1707: roffit_lines = 0;
1.149 schwarze 1708: return ROFF_REPARSE;
1.147 schwarze 1709: } else if (roffit_lines > 1)
1710: --roffit_lines;
1711:
1.177 schwarze 1712: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1713: if (roffce_lines < 1) {
1714: r->man->last = roffce_node;
1715: r->man->next = ROFF_NEXT_SIBLING;
1716: roffce_lines = 0;
1717: roffce_node = NULL;
1718: } else
1719: roffce_lines--;
1720: }
1721:
1.147 schwarze 1722: /* Convert all breakable hyphens into ASCII_HYPH. */
1723:
1.110 schwarze 1724: start = p = buf->buf + pos;
1.42 schwarze 1725:
1.110 schwarze 1726: while (*p != '\0') {
1.42 schwarze 1727: sz = strcspn(p, "-\\");
1728: p += sz;
1729:
1.110 schwarze 1730: if (*p == '\0')
1.42 schwarze 1731: break;
1732:
1.110 schwarze 1733: if (*p == '\\') {
1.42 schwarze 1734: /* Skip over escapes. */
1735: p++;
1.62 schwarze 1736: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1737: if (esc == ESCAPE_ERROR)
1.42 schwarze 1738: break;
1.136 schwarze 1739: while (*p == '-')
1740: p++;
1.42 schwarze 1741: continue;
1742: } else if (p == start) {
1743: p++;
1744: continue;
1745: }
1746:
1.44 schwarze 1747: if (isalpha((unsigned char)p[-1]) &&
1748: isalpha((unsigned char)p[1]))
1.42 schwarze 1749: *p = ASCII_HYPH;
1750: p++;
1.8 schwarze 1751: }
1.149 schwarze 1752: return ROFF_CONT;
1.8 schwarze 1753: }
1754:
1.212 schwarze 1755: int
1.110 schwarze 1756: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1757: {
1.166 schwarze 1758: enum roff_tok t;
1.212 schwarze 1759: int e;
1.110 schwarze 1760: int pos; /* parse point */
1.115 schwarze 1761: int spos; /* saved parse point for messages */
1.110 schwarze 1762: int ppos; /* original offset in buf->buf */
1763: int ctl; /* macro line (boolean) */
1764:
1765: ppos = pos = *offs;
1.1 schwarze 1766:
1.102 schwarze 1767: /* Handle in-line equation delimiters. */
1768:
1.108 schwarze 1769: if (r->tbl == NULL &&
1770: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1771: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1772: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1773: if (e == ROFF_REPARSE)
1.149 schwarze 1774: return e;
1.102 schwarze 1775: assert(e == ROFF_CONT);
1776: }
1777:
1778: /* Expand some escape sequences. */
1.8 schwarze 1779:
1.227 schwarze 1780: e = roff_expand(r, buf, ln, pos, r->escape);
1.212 schwarze 1781: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1782: return e;
1.110 schwarze 1783: assert(e == ROFF_CONT);
1.8 schwarze 1784:
1.110 schwarze 1785: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1786:
1.8 schwarze 1787: /*
1.2 schwarze 1788: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1789: * text through the macro's filter.
1790: * Equations process all content themselves.
1791: * Tables process almost all content themselves, but we want
1792: * to warn about macros before passing it there.
1.2 schwarze 1793: */
1794:
1.124 schwarze 1795: if (r->last != NULL && ! ctl) {
1.2 schwarze 1796: t = r->last->tok;
1.110 schwarze 1797: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.212 schwarze 1798: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1799: return e;
1.212 schwarze 1800: e &= ~ROFF_MASK;
1801: } else
1802: e = ROFF_IGN;
1.191 schwarze 1803: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1804: eqn_read(r->eqn, buf->buf + ppos);
1.212 schwarze 1805: return e;
1.191 schwarze 1806: }
1.193 schwarze 1807: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1808: tbl_read(r->tbl, ln, buf->buf, ppos);
1.218 schwarze 1809: roff_addtbl(r->man, ln, r->tbl);
1.212 schwarze 1810: return e;
1.193 schwarze 1811: }
1.124 schwarze 1812: if ( ! ctl)
1.212 schwarze 1813: return roff_parsetext(r, buf, pos, offs) | e;
1.100 schwarze 1814:
1815: /* Skip empty request lines. */
1816:
1.110 schwarze 1817: if (buf->buf[pos] == '"') {
1.222 schwarze 1818: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.149 schwarze 1819: return ROFF_IGN;
1.110 schwarze 1820: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1821: return ROFF_IGN;
1.2 schwarze 1822:
1823: /*
1824: * If a scope is open, go to the child handler for that macro,
1825: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1826: * Don't do so if an equation is open.
1.2 schwarze 1827: */
1828:
1829: if (r->last) {
1.1 schwarze 1830: t = r->last->tok;
1.149 schwarze 1831: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1832: }
1833:
1.115 schwarze 1834: /* No scope is open. This is a new request or macro. */
1835:
1836: spos = pos;
1837: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1838:
1839: /* Tables ignore most macros. */
1840:
1.180 schwarze 1841: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1842: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.222 schwarze 1843: mandoc_msg(MANDOCERR_TBLMACRO,
1844: ln, pos, "%s", buf->buf + spos);
1.180 schwarze 1845: if (t != TOKEN_NONE)
1.149 schwarze 1846: return ROFF_IGN;
1.129 schwarze 1847: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1848: pos++;
1.163 schwarze 1849: while (buf->buf[pos] == ' ')
1.129 schwarze 1850: pos++;
1.193 schwarze 1851: tbl_read(r->tbl, ln, buf->buf, pos);
1.218 schwarze 1852: roff_addtbl(r->man, ln, r->tbl);
1.193 schwarze 1853: return ROFF_IGN;
1.115 schwarze 1854: }
1855:
1.177 schwarze 1856: /* For now, let high level macros abort .ce mode. */
1857:
1858: if (ctl && roffce_node != NULL &&
1.196 schwarze 1859: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1860: t == ROFF_TH || t == ROFF_TS)) {
1.177 schwarze 1861: r->man->last = roffce_node;
1862: r->man->next = ROFF_NEXT_SIBLING;
1863: roffce_lines = 0;
1864: roffce_node = NULL;
1865: }
1866:
1.2 schwarze 1867: /*
1.115 schwarze 1868: * This is neither a roff request nor a user-defined macro.
1869: * Let the standard macro set parsers handle it.
1.2 schwarze 1870: */
1871:
1.166 schwarze 1872: if (t == TOKEN_NONE)
1.149 schwarze 1873: return ROFF_CONT;
1.115 schwarze 1874:
1875: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1876:
1.168 schwarze 1877: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1878: }
1879:
1.211 schwarze 1880: /*
1881: * Internal interface function to tell the roff parser that execution
1882: * of the current macro ended. This is required because macro
1883: * definitions usually do not end with a .return request.
1884: */
1885: void
1886: roff_userret(struct roff *r)
1887: {
1888: struct mctx *ctx;
1889: int i;
1890:
1891: assert(r->mstackpos >= 0);
1892: ctx = r->mstack + r->mstackpos;
1893: for (i = 0; i < ctx->argc; i++)
1894: free(ctx->argv[i]);
1895: ctx->argc = 0;
1896: r->mstackpos--;
1897: }
1898:
1.27 schwarze 1899: void
1.2 schwarze 1900: roff_endparse(struct roff *r)
1901: {
1.193 schwarze 1902: if (r->last != NULL)
1.222 schwarze 1903: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1904: r->last->col, "%s", roff_name[r->last->tok]);
1.27 schwarze 1905:
1.193 schwarze 1906: if (r->eqn != NULL) {
1.222 schwarze 1907: mandoc_msg(MANDOCERR_BLK_NOEND,
1.191 schwarze 1908: r->eqn->node->line, r->eqn->node->pos, "EQ");
1909: eqn_parse(r->eqn);
1910: r->eqn = NULL;
1.32 schwarze 1911: }
1912:
1.193 schwarze 1913: if (r->tbl != NULL) {
1.218 schwarze 1914: tbl_end(r->tbl, 1);
1.193 schwarze 1915: r->tbl = NULL;
1.27 schwarze 1916: }
1.1 schwarze 1917: }
1918:
1919: /*
1920: * Parse a roff node's type from the input buffer. This must be in the
1921: * form of ".foo xxx" in the usual way.
1922: */
1.166 schwarze 1923: static enum roff_tok
1.87 schwarze 1924: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1925: {
1.87 schwarze 1926: char *cp;
1.16 schwarze 1927: const char *mac;
1928: size_t maclen;
1.187 schwarze 1929: int deftype;
1.166 schwarze 1930: enum roff_tok t;
1.1 schwarze 1931:
1.87 schwarze 1932: cp = buf + *pos;
1933:
1934: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1935: return TOKEN_NONE;
1.1 schwarze 1936:
1.87 schwarze 1937: mac = cp;
1938: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1939:
1.187 schwarze 1940: deftype = ROFFDEF_USER | ROFFDEF_REN;
1941: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1942: switch (deftype) {
1943: case ROFFDEF_USER:
1944: t = ROFF_USERDEF;
1945: break;
1946: case ROFFDEF_REN:
1947: t = ROFF_RENAMED;
1948: break;
1949: default:
1950: t = roffhash_find(r->reqtab, mac, maclen);
1951: break;
1952: }
1.166 schwarze 1953: if (t != TOKEN_NONE)
1.87 schwarze 1954: *pos = cp - buf;
1.197 schwarze 1955: else if (deftype == ROFFDEF_UNDEF) {
1956: /* Using an undefined macro defines it to be empty. */
1957: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1958: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1959: }
1.149 schwarze 1960: return t;
1.1 schwarze 1961: }
1962:
1.138 schwarze 1963: /* --- handling of request blocks ----------------------------------------- */
1964:
1.212 schwarze 1965: static int
1.2 schwarze 1966: roff_cblock(ROFF_ARGS)
1.1 schwarze 1967: {
1968:
1.2 schwarze 1969: /*
1970: * A block-close `..' should only be invoked as a child of an
1971: * ignore macro, otherwise raise a warning and just ignore it.
1972: */
1973:
1.110 schwarze 1974: if (r->last == NULL) {
1.222 schwarze 1975: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 1976: return ROFF_IGN;
1.2 schwarze 1977: }
1.1 schwarze 1978:
1.2 schwarze 1979: switch (r->last->tok) {
1.80 schwarze 1980: case ROFF_am:
1.93 schwarze 1981: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1982: case ROFF_ami:
1983: case ROFF_de:
1.23 schwarze 1984: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1985: case ROFF_dei:
1986: case ROFF_ig:
1.2 schwarze 1987: break;
1988: default:
1.222 schwarze 1989: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 1990: return ROFF_IGN;
1.2 schwarze 1991: }
1992:
1.110 schwarze 1993: if (buf->buf[pos] != '\0')
1.222 schwarze 1994: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 1995: ".. %s", buf->buf + pos);
1.2 schwarze 1996:
1997: roffnode_pop(r);
1998: roffnode_cleanscope(r);
1.149 schwarze 1999: return ROFF_IGN;
1.2 schwarze 2000:
2001: }
1.1 schwarze 2002:
1.212 schwarze 2003: static int
1.2 schwarze 2004: roffnode_cleanscope(struct roff *r)
2005: {
1.212 schwarze 2006: int inloop;
1.1 schwarze 2007:
1.212 schwarze 2008: inloop = 0;
2009: while (r->last != NULL) {
1.46 schwarze 2010: if (--r->last->endspan != 0)
1.2 schwarze 2011: break;
1.212 schwarze 2012: inloop += roffnode_pop(r);
1.2 schwarze 2013: }
1.212 schwarze 2014: return inloop;
1.2 schwarze 2015: }
1.1 schwarze 2016:
1.212 schwarze 2017: static int
1.68 schwarze 2018: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 2019: {
2020: if (NULL == r->last) {
1.222 schwarze 2021: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2022: return 0;
1.2 schwarze 2023: }
1.1 schwarze 2024:
1.2 schwarze 2025: switch (r->last->tok) {
1.80 schwarze 2026: case ROFF_el:
2027: case ROFF_ie:
2028: case ROFF_if:
1.212 schwarze 2029: case ROFF_while:
1.2 schwarze 2030: break;
2031: default:
1.222 schwarze 2032: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2033: return 0;
1.2 schwarze 2034: }
1.1 schwarze 2035:
1.2 schwarze 2036: if (r->last->endspan > -1) {
1.222 schwarze 2037: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2038: return 0;
1.2 schwarze 2039: }
2040:
1.212 schwarze 2041: return roffnode_pop(r) + roffnode_cleanscope(r);
1.1 schwarze 2042: }
2043:
1.212 schwarze 2044: static int
1.2 schwarze 2045: roff_block(ROFF_ARGS)
1.1 schwarze 2046: {
1.187 schwarze 2047: const char *name, *value;
2048: char *call, *cp, *iname, *rname;
2049: size_t csz, namesz, rsz;
2050: int deftype;
1.16 schwarze 2051:
1.93 schwarze 2052: /* Ignore groff compatibility mode for now. */
1.2 schwarze 2053:
1.110 schwarze 2054: if (tok == ROFF_de1)
1.93 schwarze 2055: tok = ROFF_de;
1.123 schwarze 2056: else if (tok == ROFF_dei1)
2057: tok = ROFF_dei;
1.110 schwarze 2058: else if (tok == ROFF_am1)
1.93 schwarze 2059: tok = ROFF_am;
1.123 schwarze 2060: else if (tok == ROFF_ami1)
2061: tok = ROFF_ami;
1.93 schwarze 2062:
2063: /* Parse the macro name argument. */
2064:
1.110 schwarze 2065: cp = buf->buf + pos;
2066: if (tok == ROFF_ig) {
1.93 schwarze 2067: iname = NULL;
2068: namesz = 0;
2069: } else {
2070: iname = cp;
2071: namesz = roff_getname(r, &cp, ln, ppos);
2072: iname[namesz] = '\0';
2073: }
1.22 schwarze 2074:
1.93 schwarze 2075: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 2076:
1.110 schwarze 2077: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2078: deftype = ROFFDEF_USER;
2079: name = roff_getstrn(r, iname, namesz, &deftype);
2080: if (name == NULL) {
1.222 schwarze 2081: mandoc_msg(MANDOCERR_STR_UNDEF,
2082: ln, (int)(iname - buf->buf),
1.93 schwarze 2083: "%.*s", (int)namesz, iname);
2084: namesz = 0;
2085: } else
2086: namesz = strlen(name);
2087: } else
2088: name = iname;
1.22 schwarze 2089:
1.110 schwarze 2090: if (namesz == 0 && tok != ROFF_ig) {
1.222 schwarze 2091: mandoc_msg(MANDOCERR_REQ_EMPTY,
2092: ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2093: return ROFF_IGN;
1.93 schwarze 2094: }
1.2 schwarze 2095:
1.16 schwarze 2096: roffnode_push(r, tok, name, ln, ppos);
2097:
2098: /*
2099: * At the beginning of a `de' macro, clear the existing string
2100: * with the same name, if there is one. New content will be
1.66 schwarze 2101: * appended from roff_block_text() in multiline mode.
1.16 schwarze 2102: */
1.22 schwarze 2103:
1.183 schwarze 2104: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 2105: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 2106: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 2107: } else if (tok == ROFF_am || tok == ROFF_ami) {
2108: deftype = ROFFDEF_ANY;
2109: value = roff_getstrn(r, iname, namesz, &deftype);
2110: switch (deftype) { /* Before appending, ... */
2111: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2112: roff_setstrn(&r->strtab, name, namesz,
2113: value, strlen(value), 0);
2114: break;
2115: case ROFFDEF_REN: /* call original standard macro. */
2116: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2117: (int)strlen(value), value);
2118: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2119: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2120: free(call);
2121: break;
2122: case ROFFDEF_STD: /* rename and call standard macro. */
2123: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2124: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2125: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2126: (int)rsz, rname);
2127: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2128: free(call);
2129: free(rname);
2130: break;
2131: default:
2132: break;
2133: }
1.183 schwarze 2134: }
1.2 schwarze 2135:
1.110 schwarze 2136: if (*cp == '\0')
1.149 schwarze 2137: return ROFF_IGN;
1.1 schwarze 2138:
1.93 schwarze 2139: /* Get the custom end marker. */
1.22 schwarze 2140:
1.93 schwarze 2141: iname = cp;
1.86 schwarze 2142: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 2143:
2144: /* Resolve the end marker if it is indirect. */
2145:
1.110 schwarze 2146: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2147: deftype = ROFFDEF_USER;
2148: name = roff_getstrn(r, iname, namesz, &deftype);
2149: if (name == NULL) {
1.222 schwarze 2150: mandoc_msg(MANDOCERR_STR_UNDEF,
2151: ln, (int)(iname - buf->buf),
1.93 schwarze 2152: "%.*s", (int)namesz, iname);
2153: namesz = 0;
2154: } else
2155: namesz = strlen(name);
2156: } else
2157: name = iname;
2158:
1.86 schwarze 2159: if (namesz)
2160: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 2161:
1.110 schwarze 2162: if (*cp != '\0')
1.222 schwarze 2163: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.167 schwarze 2164: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 2165:
1.149 schwarze 2166: return ROFF_IGN;
1.1 schwarze 2167: }
2168:
1.212 schwarze 2169: static int
1.2 schwarze 2170: roff_block_sub(ROFF_ARGS)
1.1 schwarze 2171: {
1.166 schwarze 2172: enum roff_tok t;
1.2 schwarze 2173: int i, j;
2174:
2175: /*
2176: * First check whether a custom macro exists at this level. If
2177: * it does, then check against it. This is some of groff's
2178: * stranger behaviours. If we encountered a custom end-scope
2179: * tag and that tag also happens to be a "real" macro, then we
2180: * need to try interpreting it again as a real macro. If it's
2181: * not, then return ignore. Else continue.
2182: */
2183:
2184: if (r->last->end) {
1.35 schwarze 2185: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 2186: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 2187: break;
1.1 schwarze 2188:
1.110 schwarze 2189: if (r->last->end[j] == '\0' &&
2190: (buf->buf[i] == '\0' ||
2191: buf->buf[i] == ' ' ||
2192: buf->buf[i] == '\t')) {
1.2 schwarze 2193: roffnode_pop(r);
2194: roffnode_cleanscope(r);
1.1 schwarze 2195:
1.110 schwarze 2196: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 2197: i++;
2198:
2199: pos = i;
1.110 schwarze 2200: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 2201: TOKEN_NONE)
1.149 schwarze 2202: return ROFF_RERUN;
2203: return ROFF_IGN;
1.2 schwarze 2204: }
1.1 schwarze 2205: }
2206:
1.2 schwarze 2207: /*
2208: * If we have no custom end-query or lookup failed, then try
2209: * pulling it out of the hashtable.
2210: */
1.1 schwarze 2211:
1.110 schwarze 2212: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 2213:
1.110 schwarze 2214: if (t != ROFF_cblock) {
2215: if (tok != ROFF_ig)
2216: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 2217: return ROFF_IGN;
1.16 schwarze 2218: }
1.1 schwarze 2219:
1.149 schwarze 2220: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 2221: }
2222:
1.212 schwarze 2223: static int
1.2 schwarze 2224: roff_block_text(ROFF_ARGS)
2225: {
2226:
1.110 schwarze 2227: if (tok != ROFF_ig)
2228: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 2229:
1.149 schwarze 2230: return ROFF_IGN;
1.2 schwarze 2231: }
2232:
1.212 schwarze 2233: static int
1.2 schwarze 2234: roff_cond_sub(ROFF_ARGS)
2235: {
1.212 schwarze 2236: char *ep;
2237: int endloop, irc, rr;
1.166 schwarze 2238: enum roff_tok t;
1.2 schwarze 2239:
1.212 schwarze 2240: irc = ROFF_IGN;
1.2 schwarze 2241: rr = r->last->rule;
1.212 schwarze 2242: endloop = tok != ROFF_while ? ROFF_IGN :
2243: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2244: if (roffnode_cleanscope(r))
2245: irc |= endloop;
1.39 schwarze 2246:
1.69 schwarze 2247: /*
2248: * If `\}' occurs on a macro line without a preceding macro,
2249: * drop the line completely.
2250: */
2251:
1.110 schwarze 2252: ep = buf->buf + pos;
2253: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 2254: rr = 0;
1.69 schwarze 2255:
1.215 schwarze 2256: /*
2257: * The closing delimiter `\}' rewinds the conditional scope
2258: * but is otherwise ignored when interpreting the line.
2259: */
1.39 schwarze 2260:
1.110 schwarze 2261: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 2262: switch (ep[1]) {
2263: case '}':
2264: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.212 schwarze 2265: if (roff_ccond(r, ln, ep - buf->buf))
2266: irc |= endloop;
1.190 schwarze 2267: break;
2268: case '\0':
2269: ++ep;
2270: break;
2271: default:
2272: ep += 2;
2273: break;
1.70 schwarze 2274: }
1.50 schwarze 2275: }
1.190 schwarze 2276:
2277: /*
2278: * Fully handle known macros when they are structurally
2279: * required or when the conditional evaluated to true.
2280: */
2281:
2282: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.212 schwarze 2283: irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
2284: (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
2285: rr ? ROFF_CONT : ROFF_IGN;
2286: return irc;
1.2 schwarze 2287: }
2288:
1.212 schwarze 2289: static int
1.2 schwarze 2290: roff_cond_text(ROFF_ARGS)
2291: {
1.37 schwarze 2292: char *ep;
1.212 schwarze 2293: int endloop, irc, rr;
1.2 schwarze 2294:
1.212 schwarze 2295: irc = ROFF_IGN;
1.2 schwarze 2296: rr = r->last->rule;
1.212 schwarze 2297: endloop = tok != ROFF_while ? ROFF_IGN :
2298: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2299: if (roffnode_cleanscope(r))
2300: irc |= endloop;
1.1 schwarze 2301:
1.215 schwarze 2302: /*
2303: * If `\}' occurs on a text line with neither preceding
2304: * nor following characters, drop the line completely.
2305: */
2306:
1.110 schwarze 2307: ep = buf->buf + pos;
1.215 schwarze 2308: if (strcmp(ep, "\\}") == 0)
2309: rr = 0;
2310:
2311: /*
2312: * The closing delimiter `\}' rewinds the conditional scope
2313: * but is otherwise ignored when interpreting the line.
2314: */
2315:
1.110 schwarze 2316: while ((ep = strchr(ep, '\\')) != NULL) {
1.215 schwarze 2317: switch (ep[1]) {
2318: case '}':
2319: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2320: if (roff_ccond(r, ln, ep - buf->buf))
1.212 schwarze 2321: irc |= endloop;
1.215 schwarze 2322: break;
2323: case '\0':
2324: ++ep;
2325: break;
2326: default:
2327: ep += 2;
2328: break;
1.70 schwarze 2329: }
1.2 schwarze 2330: }
1.212 schwarze 2331: if (rr)
2332: irc |= ROFF_CONT;
2333: return irc;
1.2 schwarze 2334: }
2335:
1.138 schwarze 2336: /* --- handling of numeric and conditional expressions -------------------- */
2337:
1.77 schwarze 2338: /*
2339: * Parse a single signed integer number. Stop at the first non-digit.
2340: * If there is at least one digit, return success and advance the
2341: * parse point, else return failure and let the parse point unchanged.
2342: * Ignore overflows, treat them just like the C language.
2343: */
1.56 schwarze 2344: static int
1.133 schwarze 2345: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2346: {
1.133 schwarze 2347: int myres, scaled, n, p;
1.79 schwarze 2348:
2349: if (NULL == res)
2350: res = &myres;
1.56 schwarze 2351:
2352: p = *pos;
2353: n = v[p] == '-';
1.133 schwarze 2354: if (n || v[p] == '+')
1.56 schwarze 2355: p++;
2356:
1.133 schwarze 2357: if (flags & ROFFNUM_WHITE)
2358: while (isspace((unsigned char)v[p]))
2359: p++;
2360:
1.56 schwarze 2361: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2362: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2363: if (p == *pos + n)
2364: return 0;
2365:
2366: if (n)
2367: *res = -*res;
2368:
1.126 schwarze 2369: /* Each number may be followed by one optional scaling unit. */
2370:
2371: switch (v[p]) {
2372: case 'f':
1.133 schwarze 2373: scaled = *res * 65536;
1.126 schwarze 2374: break;
2375: case 'i':
1.133 schwarze 2376: scaled = *res * 240;
1.126 schwarze 2377: break;
2378: case 'c':
1.133 schwarze 2379: scaled = *res * 240 / 2.54;
1.126 schwarze 2380: break;
2381: case 'v':
2382: case 'P':
1.133 schwarze 2383: scaled = *res * 40;
1.126 schwarze 2384: break;
2385: case 'm':
2386: case 'n':
1.133 schwarze 2387: scaled = *res * 24;
1.126 schwarze 2388: break;
2389: case 'p':
1.133 schwarze 2390: scaled = *res * 10 / 3;
1.126 schwarze 2391: break;
2392: case 'u':
1.133 schwarze 2393: scaled = *res;
1.126 schwarze 2394: break;
2395: case 'M':
1.133 schwarze 2396: scaled = *res * 6 / 25;
1.126 schwarze 2397: break;
2398: default:
1.133 schwarze 2399: scaled = *res;
1.126 schwarze 2400: p--;
2401: break;
2402: }
1.133 schwarze 2403: if (flags & ROFFNUM_SCALE)
2404: *res = scaled;
1.126 schwarze 2405:
2406: *pos = p + 1;
1.149 schwarze 2407: return 1;
1.56 schwarze 2408: }
2409:
1.71 schwarze 2410: /*
2411: * Evaluate a string comparison condition.
2412: * The first character is the delimiter.
2413: * Succeed if the string up to its second occurrence
2414: * matches the string up to its third occurence.
2415: * Advance the cursor after the third occurrence
2416: * or lacking that, to the end of the line.
2417: */
2418: static int
2419: roff_evalstrcond(const char *v, int *pos)
2420: {
2421: const char *s1, *s2, *s3;
2422: int match;
2423:
2424: match = 0;
2425: s1 = v + *pos; /* initial delimiter */
2426: s2 = s1 + 1; /* for scanning the first string */
2427: s3 = strchr(s2, *s1); /* for scanning the second string */
2428:
2429: if (NULL == s3) /* found no middle delimiter */
2430: goto out;
2431:
2432: while ('\0' != *++s3) {
2433: if (*s2 != *s3) { /* mismatch */
2434: s3 = strchr(s3, *s1);
2435: break;
2436: }
2437: if (*s3 == *s1) { /* found the final delimiter */
2438: match = 1;
2439: break;
2440: }
2441: s2++;
2442: }
2443:
2444: out:
2445: if (NULL == s3)
2446: s3 = strchr(s2, '\0');
1.114 schwarze 2447: else if (*s3 != '\0')
1.71 schwarze 2448: s3++;
2449: *pos = s3 - v;
1.149 schwarze 2450: return match;
1.71 schwarze 2451: }
2452:
1.77 schwarze 2453: /*
2454: * Evaluate an optionally negated single character, numerical,
2455: * or string condition.
2456: */
1.71 schwarze 2457: static int
1.143 schwarze 2458: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2459: {
1.208 schwarze 2460: const char *start, *end;
2461: char *cp, *name;
2462: size_t sz;
2463: int deftype, len, number, savepos, istrue, wanttrue;
1.5 schwarze 2464:
1.71 schwarze 2465: if ('!' == v[*pos]) {
2466: wanttrue = 0;
2467: (*pos)++;
2468: } else
2469: wanttrue = 1;
2470:
1.5 schwarze 2471: switch (v[*pos]) {
1.112 schwarze 2472: case '\0':
1.149 schwarze 2473: return 0;
1.80 schwarze 2474: case 'n':
2475: case 'o':
1.5 schwarze 2476: (*pos)++;
1.149 schwarze 2477: return wanttrue;
1.80 schwarze 2478: case 'e':
2479: case 't':
1.111 schwarze 2480: case 'v':
1.5 schwarze 2481: (*pos)++;
1.149 schwarze 2482: return !wanttrue;
1.208 schwarze 2483: case 'c':
2484: do {
2485: (*pos)++;
2486: } while (v[*pos] == ' ');
2487:
2488: /*
2489: * Quirk for groff compatibility:
2490: * The horizontal tab is neither available nor unavailable.
2491: */
2492:
2493: if (v[*pos] == '\t') {
2494: (*pos)++;
2495: return 0;
2496: }
2497:
2498: /* Printable ASCII characters are available. */
2499:
2500: if (v[*pos] != '\\') {
2501: (*pos)++;
2502: return wanttrue;
2503: }
2504:
2505: end = v + ++*pos;
2506: switch (mandoc_escape(&end, &start, &len)) {
2507: case ESCAPE_SPECIAL:
2508: istrue = mchars_spec2cp(start, len) != -1;
2509: break;
2510: case ESCAPE_UNICODE:
2511: istrue = 1;
2512: break;
2513: case ESCAPE_NUMBERED:
2514: istrue = mchars_num2char(start, len) != -1;
2515: break;
2516: default:
2517: istrue = !wanttrue;
2518: break;
2519: }
2520: *pos = end - v;
2521: return istrue == wanttrue;
1.182 schwarze 2522: case 'd':
1.143 schwarze 2523: case 'r':
1.182 schwarze 2524: cp = v + *pos + 1;
2525: while (*cp == ' ')
2526: cp++;
2527: name = cp;
2528: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2529: if (sz == 0)
2530: istrue = 0;
2531: else if (v[*pos] == 'r')
2532: istrue = roff_hasregn(r, name, sz);
2533: else {
2534: deftype = ROFFDEF_ANY;
2535: roff_getstrn(r, name, sz, &deftype);
2536: istrue = !!deftype;
2537: }
1.143 schwarze 2538: *pos = cp - v;
1.182 schwarze 2539: return istrue == wanttrue;
1.5 schwarze 2540: default:
2541: break;
2542: }
2543:
1.113 schwarze 2544: savepos = *pos;
1.133 schwarze 2545: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2546: return (number > 0) == wanttrue;
1.113 schwarze 2547: else if (*pos == savepos)
1.149 schwarze 2548: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2549: else
1.149 schwarze 2550: return 0;
1.5 schwarze 2551: }
2552:
1.212 schwarze 2553: static int
1.21 schwarze 2554: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2555: {
1.30 schwarze 2556:
1.149 schwarze 2557: return ROFF_IGN;
1.21 schwarze 2558: }
2559:
1.212 schwarze 2560: static int
1.123 schwarze 2561: roff_insec(ROFF_ARGS)
2562: {
2563:
1.222 schwarze 2564: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2565: return ROFF_IGN;
1.123 schwarze 2566: }
2567:
1.212 schwarze 2568: static int
1.123 schwarze 2569: roff_unsupp(ROFF_ARGS)
2570: {
2571:
1.222 schwarze 2572: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2573: return ROFF_IGN;
1.123 schwarze 2574: }
2575:
1.212 schwarze 2576: static int
1.2 schwarze 2577: roff_cond(ROFF_ARGS)
2578: {
1.212 schwarze 2579: int irc;
1.46 schwarze 2580:
2581: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2582:
1.80 schwarze 2583: /*
1.35 schwarze 2584: * An `.el' has no conditional body: it will consume the value
2585: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2586: * defaults to DENY.
1.35 schwarze 2587: *
2588: * If we're not an `el', however, then evaluate the conditional.
2589: */
1.1 schwarze 2590:
1.110 schwarze 2591: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2592: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2593: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2594:
1.35 schwarze 2595: /*
2596: * An if-else will put the NEGATION of the current evaluated
2597: * conditional into the stack of rules.
2598: */
2599:
1.110 schwarze 2600: if (tok == ROFF_ie) {
1.96 schwarze 2601: if (r->rstackpos + 1 == r->rstacksz) {
2602: r->rstacksz += 16;
2603: r->rstack = mandoc_reallocarray(r->rstack,
2604: r->rstacksz, sizeof(int));
1.35 schwarze 2605: }
1.71 schwarze 2606: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2607: }
1.5 schwarze 2608:
2609: /* If the parent has false as its rule, then so do we. */
2610:
1.71 schwarze 2611: if (r->last->parent && !r->last->parent->rule)
2612: r->last->rule = 0;
1.5 schwarze 2613:
2614: /*
1.46 schwarze 2615: * Determine scope.
2616: * If there is nothing on the line after the conditional,
2617: * not even whitespace, use next-line scope.
1.212 schwarze 2618: * Except that .while does not support next-line scope.
1.5 schwarze 2619: */
1.2 schwarze 2620:
1.212 schwarze 2621: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.46 schwarze 2622: r->last->endspan = 2;
2623: goto out;
2624: }
2625:
1.110 schwarze 2626: while (buf->buf[pos] == ' ')
1.46 schwarze 2627: pos++;
2628:
2629: /* An opening brace requests multiline scope. */
1.2 schwarze 2630:
1.110 schwarze 2631: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2632: r->last->endspan = -1;
2633: pos += 2;
1.144 schwarze 2634: while (buf->buf[pos] == ' ')
2635: pos++;
1.46 schwarze 2636: goto out;
1.80 schwarze 2637: }
1.2 schwarze 2638:
2639: /*
1.46 schwarze 2640: * Anything else following the conditional causes
2641: * single-line scope. Warn if the scope contains
2642: * nothing but trailing whitespace.
1.2 schwarze 2643: */
2644:
1.110 schwarze 2645: if (buf->buf[pos] == '\0')
1.222 schwarze 2646: mandoc_msg(MANDOCERR_COND_EMPTY,
2647: ln, ppos, "%s", roff_name[tok]);
1.2 schwarze 2648:
1.46 schwarze 2649: r->last->endspan = 1;
1.1 schwarze 2650:
1.46 schwarze 2651: out:
1.2 schwarze 2652: *offs = pos;
1.212 schwarze 2653: irc = ROFF_RERUN;
2654: if (tok == ROFF_while)
2655: irc |= ROFF_WHILE;
2656: return irc;
1.1 schwarze 2657: }
2658:
1.212 schwarze 2659: static int
1.7 schwarze 2660: roff_ds(ROFF_ARGS)
2661: {
1.85 schwarze 2662: char *string;
2663: const char *name;
2664: size_t namesz;
1.10 schwarze 2665:
1.123 schwarze 2666: /* Ignore groff compatibility mode for now. */
2667:
2668: if (tok == ROFF_ds1)
2669: tok = ROFF_ds;
2670: else if (tok == ROFF_as1)
2671: tok = ROFF_as;
2672:
1.10 schwarze 2673: /*
1.85 schwarze 2674: * The first word is the name of the string.
2675: * If it is empty or terminated by an escape sequence,
2676: * abort the `ds' request without defining anything.
1.10 schwarze 2677: */
1.7 schwarze 2678:
1.110 schwarze 2679: name = string = buf->buf + pos;
2680: if (*name == '\0')
1.149 schwarze 2681: return ROFF_IGN;
1.7 schwarze 2682:
1.85 schwarze 2683: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2684: if (name[namesz] == '\\')
1.149 schwarze 2685: return ROFF_IGN;
1.85 schwarze 2686:
2687: /* Read past the initial double-quote, if any. */
1.110 schwarze 2688: if (*string == '"')
1.7 schwarze 2689: string++;
2690:
1.10 schwarze 2691: /* The rest is the value. */
1.85 schwarze 2692: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2693: ROFF_as == tok);
1.183 schwarze 2694: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2695: return ROFF_IGN;
1.7 schwarze 2696: }
2697:
1.77 schwarze 2698: /*
2699: * Parse a single operator, one or two characters long.
2700: * If the operator is recognized, return success and advance the
2701: * parse point, else return failure and let the parse point unchanged.
2702: */
2703: static int
2704: roff_getop(const char *v, int *pos, char *res)
2705: {
2706:
2707: *res = v[*pos];
2708:
2709: switch (*res) {
1.80 schwarze 2710: case '+':
2711: case '-':
2712: case '*':
2713: case '/':
2714: case '%':
2715: case '&':
2716: case ':':
1.77 schwarze 2717: break;
2718: case '<':
2719: switch (v[*pos + 1]) {
1.80 schwarze 2720: case '=':
1.77 schwarze 2721: *res = 'l';
2722: (*pos)++;
2723: break;
1.80 schwarze 2724: case '>':
1.77 schwarze 2725: *res = '!';
2726: (*pos)++;
2727: break;
1.80 schwarze 2728: case '?':
1.77 schwarze 2729: *res = 'i';
2730: (*pos)++;
2731: break;
2732: default:
2733: break;
2734: }
2735: break;
2736: case '>':
2737: switch (v[*pos + 1]) {
1.80 schwarze 2738: case '=':
1.77 schwarze 2739: *res = 'g';
2740: (*pos)++;
2741: break;
1.80 schwarze 2742: case '?':
1.77 schwarze 2743: *res = 'a';
2744: (*pos)++;
2745: break;
2746: default:
2747: break;
2748: }
2749: break;
2750: case '=':
2751: if ('=' == v[*pos + 1])
2752: (*pos)++;
2753: break;
2754: default:
1.149 schwarze 2755: return 0;
1.77 schwarze 2756: }
2757: (*pos)++;
2758:
1.149 schwarze 2759: return *res;
1.77 schwarze 2760: }
2761:
2762: /*
2763: * Evaluate either a parenthesized numeric expression
2764: * or a single signed integer number.
2765: */
2766: static int
1.106 schwarze 2767: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2768: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2769: {
2770:
2771: if ('(' != v[*pos])
1.149 schwarze 2772: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2773:
2774: (*pos)++;
1.133 schwarze 2775: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2776: return 0;
1.77 schwarze 2777:
1.79 schwarze 2778: /*
2779: * Omission of the closing parenthesis
2780: * is an error in validation mode,
2781: * but ignored in evaluation mode.
2782: */
2783:
1.77 schwarze 2784: if (')' == v[*pos])
2785: (*pos)++;
1.79 schwarze 2786: else if (NULL == res)
1.149 schwarze 2787: return 0;
1.77 schwarze 2788:
1.149 schwarze 2789: return 1;
1.77 schwarze 2790: }
2791:
2792: /*
2793: * Evaluate a complete numeric expression.
2794: * Proceed left to right, there is no concept of precedence.
2795: */
2796: static int
1.106 schwarze 2797: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2798: int *pos, int *res, int flags)
1.77 schwarze 2799: {
2800: int mypos, operand2;
2801: char operator;
2802:
2803: if (NULL == pos) {
2804: mypos = 0;
2805: pos = &mypos;
2806: }
2807:
1.133 schwarze 2808: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2809: while (isspace((unsigned char)v[*pos]))
2810: (*pos)++;
2811:
1.133 schwarze 2812: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2813: return 0;
1.77 schwarze 2814:
2815: while (1) {
1.133 schwarze 2816: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2817: while (isspace((unsigned char)v[*pos]))
2818: (*pos)++;
2819:
2820: if ( ! roff_getop(v, pos, &operator))
2821: break;
2822:
1.133 schwarze 2823: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2824: while (isspace((unsigned char)v[*pos]))
2825: (*pos)++;
2826:
1.133 schwarze 2827: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2828: return 0;
1.77 schwarze 2829:
1.133 schwarze 2830: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2831: while (isspace((unsigned char)v[*pos]))
2832: (*pos)++;
1.79 schwarze 2833:
2834: if (NULL == res)
2835: continue;
1.77 schwarze 2836:
2837: switch (operator) {
1.80 schwarze 2838: case '+':
1.77 schwarze 2839: *res += operand2;
2840: break;
1.80 schwarze 2841: case '-':
1.77 schwarze 2842: *res -= operand2;
2843: break;
1.80 schwarze 2844: case '*':
1.77 schwarze 2845: *res *= operand2;
2846: break;
1.80 schwarze 2847: case '/':
1.116 schwarze 2848: if (operand2 == 0) {
1.106 schwarze 2849: mandoc_msg(MANDOCERR_DIVZERO,
1.222 schwarze 2850: ln, *pos, "%s", v);
1.106 schwarze 2851: *res = 0;
2852: break;
2853: }
1.77 schwarze 2854: *res /= operand2;
2855: break;
1.80 schwarze 2856: case '%':
1.116 schwarze 2857: if (operand2 == 0) {
2858: mandoc_msg(MANDOCERR_DIVZERO,
1.222 schwarze 2859: ln, *pos, "%s", v);
1.116 schwarze 2860: *res = 0;
2861: break;
2862: }
1.77 schwarze 2863: *res %= operand2;
2864: break;
1.80 schwarze 2865: case '<':
1.77 schwarze 2866: *res = *res < operand2;
2867: break;
1.80 schwarze 2868: case '>':
1.77 schwarze 2869: *res = *res > operand2;
2870: break;
1.80 schwarze 2871: case 'l':
1.77 schwarze 2872: *res = *res <= operand2;
2873: break;
1.80 schwarze 2874: case 'g':
1.77 schwarze 2875: *res = *res >= operand2;
2876: break;
1.80 schwarze 2877: case '=':
1.77 schwarze 2878: *res = *res == operand2;
2879: break;
1.80 schwarze 2880: case '!':
1.77 schwarze 2881: *res = *res != operand2;
2882: break;
1.80 schwarze 2883: case '&':
1.77 schwarze 2884: *res = *res && operand2;
2885: break;
1.80 schwarze 2886: case ':':
1.77 schwarze 2887: *res = *res || operand2;
2888: break;
1.80 schwarze 2889: case 'i':
1.77 schwarze 2890: if (operand2 < *res)
2891: *res = operand2;
2892: break;
1.80 schwarze 2893: case 'a':
1.77 schwarze 2894: if (operand2 > *res)
2895: *res = operand2;
2896: break;
2897: default:
2898: abort();
2899: }
2900: }
1.149 schwarze 2901: return 1;
1.77 schwarze 2902: }
2903:
1.138 schwarze 2904: /* --- register management ------------------------------------------------ */
2905:
1.52 schwarze 2906: void
1.60 schwarze 2907: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2908: {
1.199 schwarze 2909: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.198 schwarze 2910: }
2911:
2912: static void
2913: roff_setregn(struct roff *r, const char *name, size_t len,
1.199 schwarze 2914: int val, char sign, int step)
1.198 schwarze 2915: {
1.52 schwarze 2916: struct roffreg *reg;
2917:
2918: /* Search for an existing register with the same name. */
2919: reg = r->regtab;
2920:
1.198 schwarze 2921: while (reg != NULL && (reg->key.sz != len ||
2922: strncmp(reg->key.p, name, len) != 0))
1.52 schwarze 2923: reg = reg->next;
1.41 schwarze 2924:
1.52 schwarze 2925: if (NULL == reg) {
2926: /* Create a new register. */
2927: reg = mandoc_malloc(sizeof(struct roffreg));
1.198 schwarze 2928: reg->key.p = mandoc_strndup(name, len);
2929: reg->key.sz = len;
1.60 schwarze 2930: reg->val = 0;
1.199 schwarze 2931: reg->step = 0;
1.52 schwarze 2932: reg->next = r->regtab;
2933: r->regtab = reg;
2934: }
2935:
1.60 schwarze 2936: if ('+' == sign)
2937: reg->val += val;
2938: else if ('-' == sign)
2939: reg->val -= val;
2940: else
2941: reg->val = val;
1.199 schwarze 2942: if (step != INT_MIN)
2943: reg->step = step;
1.41 schwarze 2944: }
2945:
1.65 schwarze 2946: /*
2947: * Handle some predefined read-only number registers.
2948: * For now, return -1 if the requested register is not predefined;
2949: * in case a predefined read-only register having the value -1
2950: * were to turn up, another special value would have to be chosen.
2951: */
2952: static int
1.145 schwarze 2953: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2954: {
2955:
2956: switch (*name) {
1.145 schwarze 2957: case '$': /* Number of arguments of the last macro evaluated. */
1.211 schwarze 2958: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.80 schwarze 2959: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2960: return 0;
1.80 schwarze 2961: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2962: return 1;
1.80 schwarze 2963: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2964: return 24;
1.80 schwarze 2965: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2966: return 0;
1.80 schwarze 2967: case 'T': /* Some output device is always defined. */
1.149 schwarze 2968: return 1;
1.80 schwarze 2969: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2970: return 40;
1.65 schwarze 2971: default:
1.149 schwarze 2972: return -1;
1.65 schwarze 2973: }
2974: }
2975:
1.53 schwarze 2976: int
1.198 schwarze 2977: roff_getreg(struct roff *r, const char *name)
1.41 schwarze 2978: {
1.199 schwarze 2979: return roff_getregn(r, name, strlen(name), '\0');
1.53 schwarze 2980: }
2981:
2982: static int
1.199 schwarze 2983: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.53 schwarze 2984: {
2985: struct roffreg *reg;
1.65 schwarze 2986: int val;
2987:
2988: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2989: val = roff_getregro(r, name + 1);
1.65 schwarze 2990: if (-1 != val)
1.149 schwarze 2991: return val;
1.65 schwarze 2992: }
1.53 schwarze 2993:
1.199 schwarze 2994: for (reg = r->regtab; reg; reg = reg->next) {
1.53 schwarze 2995: if (len == reg->key.sz &&
1.199 schwarze 2996: 0 == strncmp(name, reg->key.p, len)) {
2997: switch (sign) {
2998: case '+':
2999: reg->val += reg->step;
3000: break;
3001: case '-':
3002: reg->val -= reg->step;
3003: break;
3004: default:
3005: break;
3006: }
1.149 schwarze 3007: return reg->val;
1.199 schwarze 3008: }
3009: }
1.143 schwarze 3010:
1.199 schwarze 3011: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.149 schwarze 3012: return 0;
1.143 schwarze 3013: }
3014:
3015: static int
3016: roff_hasregn(const struct roff *r, const char *name, size_t len)
3017: {
3018: struct roffreg *reg;
3019: int val;
3020:
3021: if ('.' == name[0] && 2 == len) {
1.145 schwarze 3022: val = roff_getregro(r, name + 1);
1.143 schwarze 3023: if (-1 != val)
1.149 schwarze 3024: return 1;
1.143 schwarze 3025: }
3026:
3027: for (reg = r->regtab; reg; reg = reg->next)
3028: if (len == reg->key.sz &&
3029: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 3030: return 1;
1.41 schwarze 3031:
1.149 schwarze 3032: return 0;
1.41 schwarze 3033: }
3034:
1.52 schwarze 3035: static void
3036: roff_freereg(struct roffreg *reg)
1.41 schwarze 3037: {
1.52 schwarze 3038: struct roffreg *old_reg;
1.41 schwarze 3039:
1.52 schwarze 3040: while (NULL != reg) {
3041: free(reg->key.p);
3042: old_reg = reg;
3043: reg = reg->next;
3044: free(old_reg);
3045: }
1.41 schwarze 3046: }
1.7 schwarze 3047:
1.212 schwarze 3048: static int
1.6 schwarze 3049: roff_nr(ROFF_ARGS)
1.1 schwarze 3050: {
1.199 schwarze 3051: char *key, *val, *step;
1.85 schwarze 3052: size_t keysz;
1.199 schwarze 3053: int iv, is, len;
1.60 schwarze 3054: char sign;
1.6 schwarze 3055:
1.110 schwarze 3056: key = val = buf->buf + pos;
3057: if (*key == '\0')
1.149 schwarze 3058: return ROFF_IGN;
1.85 schwarze 3059:
3060: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 3061: if (key[keysz] == '\\')
1.149 schwarze 3062: return ROFF_IGN;
1.6 schwarze 3063:
1.60 schwarze 3064: sign = *val;
1.110 schwarze 3065: if (sign == '+' || sign == '-')
1.60 schwarze 3066: val++;
3067:
1.199 schwarze 3068: len = 0;
3069: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3070: return ROFF_IGN;
3071:
3072: step = val + len;
3073: while (isspace((unsigned char)*step))
3074: step++;
3075: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3076: is = INT_MIN;
1.1 schwarze 3077:
1.199 schwarze 3078: roff_setregn(r, key, keysz, iv, sign, is);
1.149 schwarze 3079: return ROFF_IGN;
1.76 schwarze 3080: }
3081:
1.212 schwarze 3082: static int
1.76 schwarze 3083: roff_rr(ROFF_ARGS)
3084: {
3085: struct roffreg *reg, **prev;
1.85 schwarze 3086: char *name, *cp;
3087: size_t namesz;
1.76 schwarze 3088:
1.110 schwarze 3089: name = cp = buf->buf + pos;
3090: if (*name == '\0')
1.149 schwarze 3091: return ROFF_IGN;
1.85 schwarze 3092: namesz = roff_getname(r, &cp, ln, pos);
3093: name[namesz] = '\0';
1.76 schwarze 3094:
3095: prev = &r->regtab;
3096: while (1) {
3097: reg = *prev;
1.110 schwarze 3098: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 3099: break;
3100: prev = ®->next;
3101: }
1.110 schwarze 3102: if (reg != NULL) {
1.76 schwarze 3103: *prev = reg->next;
3104: free(reg->key.p);
3105: free(reg);
3106: }
1.149 schwarze 3107: return ROFF_IGN;
1.29 schwarze 3108: }
3109:
1.138 schwarze 3110: /* --- handler functions for roff requests -------------------------------- */
3111:
1.212 schwarze 3112: static int
1.29 schwarze 3113: roff_rm(ROFF_ARGS)
3114: {
3115: const char *name;
3116: char *cp;
1.85 schwarze 3117: size_t namesz;
1.29 schwarze 3118:
1.110 schwarze 3119: cp = buf->buf + pos;
3120: while (*cp != '\0') {
1.85 schwarze 3121: name = cp;
1.110 schwarze 3122: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 3123: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 3124: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 3125: if (name[namesz] == '\\')
1.85 schwarze 3126: break;
1.29 schwarze 3127: }
1.149 schwarze 3128: return ROFF_IGN;
1.51 schwarze 3129: }
3130:
1.212 schwarze 3131: static int
1.51 schwarze 3132: roff_it(ROFF_ARGS)
3133: {
3134: int iv;
3135:
3136: /* Parse the number of lines. */
1.133 schwarze 3137:
3138: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 3139: mandoc_msg(MANDOCERR_IT_NONUM,
3140: ln, ppos, "%s", buf->buf + 1);
1.149 schwarze 3141: return ROFF_IGN;
1.51 schwarze 3142: }
3143:
1.134 schwarze 3144: while (isspace((unsigned char)buf->buf[pos]))
3145: pos++;
3146:
3147: /*
3148: * Arm the input line trap.
3149: * Special-casing "an-trap" is an ugly workaround to cope
3150: * with DocBook stupidly fiddling with man(7) internals.
3151: */
1.133 schwarze 3152:
1.51 schwarze 3153: roffit_lines = iv;
1.134 schwarze 3154: roffit_macro = mandoc_strdup(iv != 1 ||
3155: strcmp(buf->buf + pos, "an-trap") ?
3156: buf->buf + pos : "br");
1.149 schwarze 3157: return ROFF_IGN;
1.47 schwarze 3158: }
3159:
1.212 schwarze 3160: static int
1.47 schwarze 3161: roff_Dd(ROFF_ARGS)
3162: {
1.187 schwarze 3163: int mask;
3164: enum roff_tok t, te;
1.99 schwarze 3165:
1.187 schwarze 3166: switch (tok) {
3167: case ROFF_Dd:
3168: tok = MDOC_Dd;
3169: te = MDOC_MAX;
3170: if (r->format == 0)
3171: r->format = MPARSE_MDOC;
3172: mask = MPARSE_MDOC | MPARSE_QUICK;
3173: break;
3174: case ROFF_TH:
3175: tok = MAN_TH;
3176: te = MAN_MAX;
3177: if (r->format == 0)
3178: r->format = MPARSE_MAN;
3179: mask = MPARSE_QUICK;
3180: break;
3181: default:
3182: abort();
3183: }
3184: if ((r->options & mask) == 0)
3185: for (t = tok; t < te; t++)
3186: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 3187: return ROFF_CONT;
1.14 schwarze 3188: }
3189:
1.212 schwarze 3190: static int
1.27 schwarze 3191: roff_TE(ROFF_ARGS)
3192: {
1.233 ! schwarze 3193: r->man->flags &= ~ROFF_NONOFILL;
1.193 schwarze 3194: if (r->tbl == NULL) {
1.222 schwarze 3195: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.193 schwarze 3196: return ROFF_IGN;
3197: }
1.218 schwarze 3198: if (tbl_end(r->tbl, 0) == 0) {
1.193 schwarze 3199: r->tbl = NULL;
1.130 schwarze 3200: free(buf->buf);
3201: buf->buf = mandoc_strdup(".sp");
3202: buf->sz = 4;
1.201 schwarze 3203: *offs = 0;
1.149 schwarze 3204: return ROFF_REPARSE;
1.130 schwarze 3205: }
1.193 schwarze 3206: r->tbl = NULL;
1.149 schwarze 3207: return ROFF_IGN;
1.27 schwarze 3208: }
3209:
1.212 schwarze 3210: static int
1.27 schwarze 3211: roff_T_(ROFF_ARGS)
3212: {
3213:
3214: if (NULL == r->tbl)
1.222 schwarze 3215: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.27 schwarze 3216: else
1.168 schwarze 3217: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 3218:
1.149 schwarze 3219: return ROFF_IGN;
1.27 schwarze 3220: }
3221:
1.102 schwarze 3222: /*
3223: * Handle in-line equation delimiters.
3224: */
1.212 schwarze 3225: static int
1.110 schwarze 3226: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 3227: {
1.105 schwarze 3228: char *cp1, *cp2;
3229: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 3230:
1.102 schwarze 3231: /*
3232: * Outside equations, look for an opening delimiter.
3233: * If we are inside an equation, we already know it is
3234: * in-line, or this function wouldn't have been called;
3235: * so look for a closing delimiter.
3236: */
3237:
1.110 schwarze 3238: cp1 = buf->buf + pos;
1.102 schwarze 3239: cp2 = strchr(cp1, r->eqn == NULL ?
3240: r->last_eqn->odelim : r->last_eqn->cdelim);
3241: if (cp2 == NULL)
1.149 schwarze 3242: return ROFF_CONT;
1.102 schwarze 3243:
1.105 schwarze 3244: *cp2++ = '\0';
3245: bef_pr = bef_nl = aft_nl = aft_pr = "";
3246:
3247: /* Handle preceding text, protecting whitespace. */
3248:
1.110 schwarze 3249: if (*buf->buf != '\0') {
1.105 schwarze 3250: if (r->eqn == NULL)
3251: bef_pr = "\\&";
3252: bef_nl = "\n";
3253: }
3254:
3255: /*
3256: * Prepare replacing the delimiter with an equation macro
3257: * and drop leading white space from the equation.
3258: */
1.102 schwarze 3259:
1.105 schwarze 3260: if (r->eqn == NULL) {
3261: while (*cp2 == ' ')
3262: cp2++;
3263: mac = ".EQ";
3264: } else
3265: mac = ".EN";
3266:
3267: /* Handle following text, protecting whitespace. */
3268:
3269: if (*cp2 != '\0') {
3270: aft_nl = "\n";
3271: if (r->eqn != NULL)
3272: aft_pr = "\\&";
3273: }
3274:
3275: /* Do the actual replacement. */
3276:
1.110 schwarze 3277: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 3278: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 3279: free(buf->buf);
3280: buf->buf = cp1;
1.102 schwarze 3281:
3282: /* Toggle the in-line state of the eqn subsystem. */
3283:
3284: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 3285: return ROFF_REPARSE;
1.41 schwarze 3286: }
3287:
1.212 schwarze 3288: static int
1.107 schwarze 3289: roff_EQ(ROFF_ARGS)
1.32 schwarze 3290: {
1.191 schwarze 3291: struct roff_node *n;
3292:
1.228 schwarze 3293: if (r->man->meta.macroset == MACROSET_MAN)
1.194 schwarze 3294: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 3295: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3296: if (ln > r->man->last->line)
3297: n->flags |= NODE_LINE;
1.220 schwarze 3298: n->eqn = eqn_box_new();
1.191 schwarze 3299: roff_node_append(r->man, n);
3300: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 3301:
1.110 schwarze 3302: assert(r->eqn == NULL);
1.191 schwarze 3303: if (r->last_eqn == NULL)
1.223 schwarze 3304: r->last_eqn = eqn_alloc();
1.191 schwarze 3305: else
3306: eqn_reset(r->last_eqn);
3307: r->eqn = r->last_eqn;
3308: r->eqn->node = n;
1.41 schwarze 3309:
1.110 schwarze 3310: if (buf->buf[pos] != '\0')
1.222 schwarze 3311: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 3312: ".EQ %s", buf->buf + pos);
1.41 schwarze 3313:
1.149 schwarze 3314: return ROFF_IGN;
1.32 schwarze 3315: }
3316:
1.212 schwarze 3317: static int
1.32 schwarze 3318: roff_EN(ROFF_ARGS)
3319: {
1.191 schwarze 3320: if (r->eqn != NULL) {
3321: eqn_parse(r->eqn);
3322: r->eqn = NULL;
3323: } else
1.222 schwarze 3324: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.191 schwarze 3325: if (buf->buf[pos] != '\0')
1.222 schwarze 3326: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.191 schwarze 3327: "EN %s", buf->buf + pos);
1.149 schwarze 3328: return ROFF_IGN;
1.32 schwarze 3329: }
3330:
1.212 schwarze 3331: static int
1.27 schwarze 3332: roff_TS(ROFF_ARGS)
3333: {
1.193 schwarze 3334: if (r->tbl != NULL) {
1.222 schwarze 3335: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.218 schwarze 3336: tbl_end(r->tbl, 0);
1.27 schwarze 3337: }
1.233 ! schwarze 3338: r->man->flags |= ROFF_NONOFILL;
1.223 schwarze 3339: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.218 schwarze 3340: if (r->last_tbl == NULL)
1.193 schwarze 3341: r->first_tbl = r->tbl;
3342: r->last_tbl = r->tbl;
1.169 schwarze 3343: return ROFF_IGN;
3344: }
3345:
1.212 schwarze 3346: static int
1.230 schwarze 3347: roff_noarg(ROFF_ARGS)
3348: {
3349: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3350: man_breakscope(r->man, tok);
3351: if (tok == ROFF_brp)
3352: tok = ROFF_br;
3353: roff_elem_alloc(r->man, ln, ppos, tok);
3354: if (buf->buf[pos] != '\0')
3355: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3356: "%s %s", roff_name[tok], buf->buf + pos);
3357: if (tok == ROFF_nf)
3358: r->man->flags |= ROFF_NOFILL;
3359: else if (tok == ROFF_fi)
3360: r->man->flags &= ~ROFF_NOFILL;
3361: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3362: r->man->next = ROFF_NEXT_SIBLING;
3363: return ROFF_IGN;
3364: }
3365:
3366: static int
1.169 schwarze 3367: roff_onearg(ROFF_ARGS)
3368: {
3369: struct roff_node *n;
3370: char *cp;
1.177 schwarze 3371: int npos;
1.169 schwarze 3372:
1.174 schwarze 3373: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 3374: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3375: tok == ROFF_ti))
1.174 schwarze 3376: man_breakscope(r->man, tok);
3377:
1.181 schwarze 3378: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 3379: r->man->last = roffce_node;
3380: r->man->next = ROFF_NEXT_SIBLING;
3381: }
3382:
1.169 schwarze 3383: roff_elem_alloc(r->man, ln, ppos, tok);
3384: n = r->man->last;
3385:
3386: cp = buf->buf + pos;
3387: if (*cp != '\0') {
3388: while (*cp != '\0' && *cp != ' ')
3389: cp++;
3390: while (*cp == ' ')
3391: *cp++ = '\0';
3392: if (*cp != '\0')
1.222 schwarze 3393: mandoc_msg(MANDOCERR_ARG_EXCESS,
3394: ln, (int)(cp - buf->buf),
1.169 schwarze 3395: "%s ... %s", roff_name[tok], cp);
3396: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 3397: }
3398:
1.181 schwarze 3399: if (tok == ROFF_ce || tok == ROFF_rj) {
3400: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 3401: roff_word_alloc(r->man, ln, pos, "1");
3402: r->man->last->flags |= NODE_NOSRC;
3403: }
3404: npos = 0;
3405: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3406: &roffce_lines, 0) == 0) {
1.222 schwarze 3407: mandoc_msg(MANDOCERR_CE_NONUM,
3408: ln, pos, "ce %s", buf->buf + pos);
1.177 schwarze 3409: roffce_lines = 1;
3410: }
3411: if (roffce_lines < 1) {
3412: r->man->last = r->man->last->parent;
3413: roffce_node = NULL;
3414: roffce_lines = 0;
3415: } else
3416: roffce_node = r->man->last->parent;
3417: } else {
3418: n->flags |= NODE_VALID | NODE_ENDED;
3419: r->man->last = n;
3420: }
3421: n->flags |= NODE_LINE;
1.172 schwarze 3422: r->man->next = ROFF_NEXT_SIBLING;
3423: return ROFF_IGN;
3424: }
3425:
1.212 schwarze 3426: static int
1.172 schwarze 3427: roff_manyarg(ROFF_ARGS)
3428: {
3429: struct roff_node *n;
3430: char *sp, *ep;
3431:
3432: roff_elem_alloc(r->man, ln, ppos, tok);
3433: n = r->man->last;
3434:
3435: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3436: while (*ep != '\0' && *ep != ' ')
3437: ep++;
3438: while (*ep == ' ')
3439: *ep++ = '\0';
3440: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3441: }
3442:
3443: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3444: r->man->last = n;
3445: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3446: return ROFF_IGN;
1.123 schwarze 3447: }
3448:
1.212 schwarze 3449: static int
1.183 schwarze 3450: roff_als(ROFF_ARGS)
3451: {
3452: char *oldn, *newn, *end, *value;
3453: size_t oldsz, newsz, valsz;
3454:
3455: newn = oldn = buf->buf + pos;
3456: if (*newn == '\0')
3457: return ROFF_IGN;
3458:
3459: newsz = roff_getname(r, &oldn, ln, pos);
3460: if (newn[newsz] == '\\' || *oldn == '\0')
3461: return ROFF_IGN;
3462:
3463: end = oldn;
3464: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3465: if (oldsz == 0)
3466: return ROFF_IGN;
3467:
1.210 schwarze 3468: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.187 schwarze 3469: (int)oldsz, oldn);
1.183 schwarze 3470: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3471: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3472: free(value);
1.168 schwarze 3473: return ROFF_IGN;
1.27 schwarze 3474: }
3475:
1.212 schwarze 3476: static int
1.48 schwarze 3477: roff_cc(ROFF_ARGS)
3478: {
3479: const char *p;
3480:
1.110 schwarze 3481: p = buf->buf + pos;
1.48 schwarze 3482:
1.110 schwarze 3483: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3484: r->control = '\0';
1.48 schwarze 3485:
1.110 schwarze 3486: if (*p != '\0')
1.222 schwarze 3487: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.132 schwarze 3488: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3489:
1.213 schwarze 3490: return ROFF_IGN;
3491: }
3492:
3493: static int
3494: roff_char(ROFF_ARGS)
3495: {
3496: const char *p, *kp, *vp;
3497: size_t ksz, vsz;
3498: int font;
3499:
3500: /* Parse the character to be replaced. */
3501:
3502: kp = buf->buf + pos;
3503: p = kp + 1;
3504: if (*kp == '\0' || (*kp == '\\' &&
3505: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3506: (*p != ' ' && *p != '\0')) {
1.222 schwarze 3507: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.213 schwarze 3508: return ROFF_IGN;
3509: }
3510: ksz = p - kp;
3511: while (*p == ' ')
3512: p++;
3513:
3514: /*
3515: * If the replacement string contains a font escape sequence,
3516: * we have to restore the font at the end.
3517: */
3518:
3519: vp = p;
3520: vsz = strlen(p);
3521: font = 0;
3522: while (*p != '\0') {
3523: if (*p++ != '\\')
3524: continue;
3525: switch (mandoc_escape(&p, NULL, NULL)) {
3526: case ESCAPE_FONT:
3527: case ESCAPE_FONTROMAN:
3528: case ESCAPE_FONTITALIC:
3529: case ESCAPE_FONTBOLD:
3530: case ESCAPE_FONTBI:
1.214 schwarze 3531: case ESCAPE_FONTCW:
1.213 schwarze 3532: case ESCAPE_FONTPREV:
3533: font++;
3534: break;
3535: default:
3536: break;
3537: }
3538: }
3539: if (font > 1)
1.222 schwarze 3540: mandoc_msg(MANDOCERR_CHAR_FONT,
3541: ln, (int)(vp - buf->buf), "%s", vp);
1.213 schwarze 3542:
3543: /*
3544: * Approximate the effect of .char using the .tr tables.
3545: * XXX In groff, .char and .tr interact differently.
3546: */
3547:
3548: if (ksz == 1) {
3549: if (r->xtab == NULL)
3550: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3551: assert((unsigned int)*kp < 128);
3552: free(r->xtab[(int)*kp].p);
3553: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3554: "%s%s", vp, font ? "\fP" : "");
3555: } else {
3556: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3557: if (font)
3558: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3559: }
1.149 schwarze 3560: return ROFF_IGN;
1.48 schwarze 3561: }
3562:
1.212 schwarze 3563: static int
1.175 schwarze 3564: roff_ec(ROFF_ARGS)
3565: {
3566: const char *p;
3567:
3568: p = buf->buf + pos;
3569: if (*p == '\0')
3570: r->escape = '\\';
3571: else {
3572: r->escape = *p;
3573: if (*++p != '\0')
1.222 schwarze 3574: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3575: (int)(p - buf->buf), "ec ... %s", p);
1.175 schwarze 3576: }
3577: return ROFF_IGN;
3578: }
3579:
1.212 schwarze 3580: static int
1.175 schwarze 3581: roff_eo(ROFF_ARGS)
3582: {
3583: r->escape = '\0';
3584: if (buf->buf[pos] != '\0')
1.222 schwarze 3585: mandoc_msg(MANDOCERR_ARG_SKIP,
1.175 schwarze 3586: ln, pos, "eo %s", buf->buf + pos);
3587: return ROFF_IGN;
1.202 schwarze 3588: }
3589:
1.212 schwarze 3590: static int
1.202 schwarze 3591: roff_nop(ROFF_ARGS)
3592: {
3593: while (buf->buf[pos] == ' ')
3594: pos++;
3595: *offs = pos;
3596: return ROFF_RERUN;
1.175 schwarze 3597: }
3598:
1.212 schwarze 3599: static int
1.42 schwarze 3600: roff_tr(ROFF_ARGS)
3601: {
3602: const char *p, *first, *second;
3603: size_t fsz, ssz;
3604: enum mandoc_esc esc;
3605:
1.110 schwarze 3606: p = buf->buf + pos;
1.42 schwarze 3607:
1.110 schwarze 3608: if (*p == '\0') {
1.222 schwarze 3609: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.149 schwarze 3610: return ROFF_IGN;
1.42 schwarze 3611: }
3612:
1.110 schwarze 3613: while (*p != '\0') {
1.42 schwarze 3614: fsz = ssz = 1;
3615:
3616: first = p++;
1.110 schwarze 3617: if (*first == '\\') {
1.42 schwarze 3618: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3619: if (esc == ESCAPE_ERROR) {
1.222 schwarze 3620: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3621: (int)(p - buf->buf), "%s", first);
1.149 schwarze 3622: return ROFF_IGN;
1.42 schwarze 3623: }
3624: fsz = (size_t)(p - first);
3625: }
3626:
3627: second = p++;
1.110 schwarze 3628: if (*second == '\\') {
1.42 schwarze 3629: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3630: if (esc == ESCAPE_ERROR) {
1.222 schwarze 3631: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3632: (int)(p - buf->buf), "%s", second);
1.149 schwarze 3633: return ROFF_IGN;
1.42 schwarze 3634: }
3635: ssz = (size_t)(p - second);
1.110 schwarze 3636: } else if (*second == '\0') {
1.222 schwarze 3637: mandoc_msg(MANDOCERR_TR_ODD, ln,
3638: (int)(first - buf->buf), "tr %s", first);
1.42 schwarze 3639: second = " ";
3640: p--;
3641: }
3642:
3643: if (fsz > 1) {
1.80 schwarze 3644: roff_setstrn(&r->xmbtab, first, fsz,
3645: second, ssz, 0);
1.42 schwarze 3646: continue;
3647: }
3648:
1.110 schwarze 3649: if (r->xtab == NULL)
1.80 schwarze 3650: r->xtab = mandoc_calloc(128,
3651: sizeof(struct roffstr));
1.42 schwarze 3652:
3653: free(r->xtab[(int)*first].p);
3654: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3655: r->xtab[(int)*first].sz = ssz;
3656: }
3657:
1.149 schwarze 3658: return ROFF_IGN;
1.42 schwarze 3659: }
3660:
1.211 schwarze 3661: /*
3662: * Implementation of the .return request.
3663: * There is no need to call roff_userret() from here.
3664: * The read module will call that after rewinding the reader stack
3665: * to the place from where the current macro was called.
3666: */
1.212 schwarze 3667: static int
1.211 schwarze 3668: roff_return(ROFF_ARGS)
3669: {
3670: if (r->mstackpos >= 0)
1.212 schwarze 3671: return ROFF_IGN | ROFF_USERRET;
1.211 schwarze 3672:
1.222 schwarze 3673: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.211 schwarze 3674: return ROFF_IGN;
3675: }
3676:
1.212 schwarze 3677: static int
1.178 schwarze 3678: roff_rn(ROFF_ARGS)
3679: {
3680: const char *value;
3681: char *oldn, *newn, *end;
3682: size_t oldsz, newsz;
1.187 schwarze 3683: int deftype;
1.178 schwarze 3684:
3685: oldn = newn = buf->buf + pos;
3686: if (*oldn == '\0')
3687: return ROFF_IGN;
3688:
3689: oldsz = roff_getname(r, &newn, ln, pos);
3690: if (oldn[oldsz] == '\\' || *newn == '\0')
3691: return ROFF_IGN;
3692:
3693: end = newn;
3694: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3695: if (newsz == 0)
3696: return ROFF_IGN;
3697:
1.187 schwarze 3698: deftype = ROFFDEF_ANY;
3699: value = roff_getstrn(r, oldn, oldsz, &deftype);
3700: switch (deftype) {
3701: case ROFFDEF_USER:
1.178 schwarze 3702: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3703: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3704: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3705: break;
3706: case ROFFDEF_PRE:
3707: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3708: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3709: break;
3710: case ROFFDEF_REN:
1.178 schwarze 3711: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3712: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3713: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3714: break;
3715: case ROFFDEF_STD:
1.178 schwarze 3716: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3717: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3718: break;
3719: default:
3720: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3721: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3722: break;
3723: }
1.178 schwarze 3724: return ROFF_IGN;
3725: }
3726:
1.212 schwarze 3727: static int
1.211 schwarze 3728: roff_shift(ROFF_ARGS)
3729: {
3730: struct mctx *ctx;
3731: int levels, i;
3732:
3733: levels = 1;
3734: if (buf->buf[pos] != '\0' &&
3735: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.222 schwarze 3736: mandoc_msg(MANDOCERR_CE_NONUM,
1.211 schwarze 3737: ln, pos, "shift %s", buf->buf + pos);
3738: levels = 1;
3739: }
3740: if (r->mstackpos < 0) {
1.222 schwarze 3741: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.211 schwarze 3742: return ROFF_IGN;
3743: }
3744: ctx = r->mstack + r->mstackpos;
3745: if (levels > ctx->argc) {
1.222 schwarze 3746: mandoc_msg(MANDOCERR_SHIFT,
1.211 schwarze 3747: ln, pos, "%d, but max is %d", levels, ctx->argc);
3748: levels = ctx->argc;
3749: }
3750: if (levels == 0)
3751: return ROFF_IGN;
3752: for (i = 0; i < levels; i++)
3753: free(ctx->argv[i]);
3754: ctx->argc -= levels;
3755: for (i = 0; i < ctx->argc; i++)
3756: ctx->argv[i] = ctx->argv[i + levels];
3757: return ROFF_IGN;
3758: }
3759:
1.212 schwarze 3760: static int
1.14 schwarze 3761: roff_so(ROFF_ARGS)
3762: {
1.121 schwarze 3763: char *name, *cp;
1.15 schwarze 3764:
1.110 schwarze 3765: name = buf->buf + pos;
1.222 schwarze 3766: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.14 schwarze 3767:
1.22 schwarze 3768: /*
3769: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3770: * opening anything that's not in our cwd or anything beneath
3771: * it. Thus, explicitly disallow traversing up the file-system
3772: * or using absolute paths.
3773: */
3774:
1.110 schwarze 3775: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.222 schwarze 3776: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.121 schwarze 3777: buf->sz = mandoc_asprintf(&cp,
3778: ".sp\nSee the file %s.\n.sp", name) + 1;
3779: free(buf->buf);
3780: buf->buf = cp;
3781: *offs = 0;
1.149 schwarze 3782: return ROFF_REPARSE;
1.14 schwarze 3783: }
3784:
3785: *offs = pos;
1.149 schwarze 3786: return ROFF_SO;
1.7 schwarze 3787: }
3788:
1.138 schwarze 3789: /* --- user defined strings and macros ------------------------------------ */
3790:
1.212 schwarze 3791: static int
1.16 schwarze 3792: roff_userdef(ROFF_ARGS)
1.12 schwarze 3793: {
1.211 schwarze 3794: struct mctx *ctx;
3795: char *arg, *ap, *dst, *src;
3796: size_t sz;
3797:
3798: /* Initialize a new macro stack context. */
3799:
3800: if (++r->mstackpos == r->mstacksz) {
3801: r->mstack = mandoc_recallocarray(r->mstack,
3802: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3803: r->mstacksz += 8;
3804: }
3805: ctx = r->mstack + r->mstackpos;
3806: ctx->argsz = 0;
3807: ctx->argc = 0;
3808: ctx->argv = NULL;
3809:
3810: /*
3811: * Collect pointers to macro argument strings,
3812: * NUL-terminating them and escaping quotes.
3813: */
3814:
3815: src = buf->buf + pos;
3816: while (*src != '\0') {
3817: if (ctx->argc == ctx->argsz) {
3818: ctx->argsz += 8;
3819: ctx->argv = mandoc_reallocarray(ctx->argv,
3820: ctx->argsz, sizeof(*ctx->argv));
3821: }
1.227 schwarze 3822: arg = roff_getarg(r, &src, ln, &pos);
1.211 schwarze 3823: sz = 1; /* For the terminating NUL. */
3824: for (ap = arg; *ap != '\0'; ap++)
3825: sz += *ap == '"' ? 4 : 1;
3826: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3827: for (ap = arg; *ap != '\0'; ap++) {
3828: if (*ap == '"') {
3829: memcpy(dst, "\\(dq", 4);
3830: dst += 4;
3831: } else
3832: *dst++ = *ap;
1.16 schwarze 3833: }
1.211 schwarze 3834: *dst = '\0';
1.227 schwarze 3835: free(arg);
1.209 schwarze 3836: }
3837:
1.211 schwarze 3838: /* Replace the macro invocation by the macro definition. */
1.135 schwarze 3839:
1.110 schwarze 3840: free(buf->buf);
1.211 schwarze 3841: buf->buf = mandoc_strdup(r->current_string);
3842: buf->sz = strlen(buf->buf) + 1;
1.120 schwarze 3843: *offs = 0;
1.16 schwarze 3844:
1.149 schwarze 3845: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.212 schwarze 3846: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.12 schwarze 3847: }
1.28 schwarze 3848:
1.178 schwarze 3849: /*
3850: * Calling a high-level macro that was renamed with .rn.
3851: * r->current_string has already been set up by roff_parse().
3852: */
1.212 schwarze 3853: static int
1.178 schwarze 3854: roff_renamed(ROFF_ARGS)
3855: {
3856: char *nbuf;
3857:
1.187 schwarze 3858: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3859: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3860: free(buf->buf);
3861: buf->buf = nbuf;
1.201 schwarze 3862: *offs = 0;
1.178 schwarze 3863: return ROFF_CONT;
3864: }
3865:
1.85 schwarze 3866: static size_t
1.28 schwarze 3867: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3868: {
3869: char *name, *cp;
1.85 schwarze 3870: size_t namesz;
1.28 schwarze 3871:
3872: name = *cpp;
3873: if ('\0' == *name)
1.149 schwarze 3874: return 0;
1.28 schwarze 3875:
1.85 schwarze 3876: /* Read until end of name and terminate it with NUL. */
3877: for (cp = name; 1; cp++) {
3878: if ('\0' == *cp || ' ' == *cp) {
3879: namesz = cp - name;
3880: break;
3881: }
1.28 schwarze 3882: if ('\\' != *cp)
3883: continue;
1.88 schwarze 3884: namesz = cp - name;
3885: if ('{' == cp[1] || '}' == cp[1])
3886: break;
1.28 schwarze 3887: cp++;
3888: if ('\\' == *cp)
3889: continue;
1.222 schwarze 3890: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.97 schwarze 3891: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3892: mandoc_escape((const char **)&cp, NULL, NULL);
3893: break;
1.28 schwarze 3894: }
3895:
3896: /* Read past spaces. */
3897: while (' ' == *cp)
3898: cp++;
3899:
3900: *cpp = cp;
1.149 schwarze 3901: return namesz;
1.28 schwarze 3902: }
3903:
1.16 schwarze 3904: /*
3905: * Store *string into the user-defined string called *name.
3906: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3907: * append == 0: replace mode
3908: * append == 1: single-line append mode
3909: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3910: */
1.8 schwarze 3911: static void
1.16 schwarze 3912: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3913: int append)
1.7 schwarze 3914: {
1.187 schwarze 3915: size_t namesz;
1.42 schwarze 3916:
1.187 schwarze 3917: namesz = strlen(name);
3918: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3919: string ? strlen(string) : 0, append);
1.187 schwarze 3920: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3921: }
3922:
3923: static void
3924: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3925: const char *string, size_t stringsz, int append)
1.42 schwarze 3926: {
3927: struct roffkv *n;
3928: char *c;
3929: int i;
3930: size_t oldch, newch;
1.7 schwarze 3931:
1.16 schwarze 3932: /* Search for an existing string with the same name. */
1.42 schwarze 3933: n = *r;
3934:
1.84 schwarze 3935: while (n && (namesz != n->key.sz ||
3936: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3937: n = n->next;
1.8 schwarze 3938:
3939: if (NULL == n) {
1.16 schwarze 3940: /* Create a new string table entry. */
1.42 schwarze 3941: n = mandoc_malloc(sizeof(struct roffkv));
3942: n->key.p = mandoc_strndup(name, namesz);
3943: n->key.sz = namesz;
3944: n->val.p = NULL;
3945: n->val.sz = 0;
3946: n->next = *r;
3947: *r = n;
1.66 schwarze 3948: } else if (0 == append) {
1.42 schwarze 3949: free(n->val.p);
3950: n->val.p = NULL;
3951: n->val.sz = 0;
1.16 schwarze 3952: }
3953:
3954: if (NULL == string)
3955: return;
3956:
3957: /*
3958: * One additional byte for the '\n' in multiline mode,
3959: * and one for the terminating '\0'.
3960: */
1.66 schwarze 3961: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3962:
3963: if (NULL == n->val.p) {
3964: n->val.p = mandoc_malloc(newch);
3965: *n->val.p = '\0';
1.16 schwarze 3966: oldch = 0;
3967: } else {
1.42 schwarze 3968: oldch = n->val.sz;
3969: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3970: }
3971:
3972: /* Skip existing content in the destination buffer. */
1.42 schwarze 3973: c = n->val.p + (int)oldch;
1.16 schwarze 3974:
3975: /* Append new content to the destination buffer. */
1.42 schwarze 3976: i = 0;
3977: while (i < (int)stringsz) {
1.16 schwarze 3978: /*
3979: * Rudimentary roff copy mode:
3980: * Handle escaped backslashes.
3981: */
1.42 schwarze 3982: if ('\\' == string[i] && '\\' == string[i + 1])
3983: i++;
3984: *c++ = string[i++];
1.16 schwarze 3985: }
1.8 schwarze 3986:
1.16 schwarze 3987: /* Append terminating bytes. */
1.66 schwarze 3988: if (1 < append)
1.16 schwarze 3989: *c++ = '\n';
1.42 schwarze 3990:
1.16 schwarze 3991: *c = '\0';
1.42 schwarze 3992: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3993: }
3994:
1.8 schwarze 3995: static const char *
1.197 schwarze 3996: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 3997: int *deftype)
1.7 schwarze 3998: {
1.187 schwarze 3999: const struct roffkv *n;
1.197 schwarze 4000: int found, i;
1.187 schwarze 4001: enum roff_tok tok;
4002:
1.197 schwarze 4003: found = 0;
4004: for (n = r->strtab; n != NULL; n = n->next) {
4005: if (strncmp(name, n->key.p, len) != 0 ||
4006: n->key.p[len] != '\0' || n->val.p == NULL)
4007: continue;
4008: if (*deftype & ROFFDEF_USER) {
4009: *deftype = ROFFDEF_USER;
4010: return n->val.p;
4011: } else {
4012: found = 1;
4013: break;
4014: }
4015: }
4016: for (n = r->rentab; n != NULL; n = n->next) {
4017: if (strncmp(name, n->key.p, len) != 0 ||
4018: n->key.p[len] != '\0' || n->val.p == NULL)
4019: continue;
4020: if (*deftype & ROFFDEF_REN) {
4021: *deftype = ROFFDEF_REN;
4022: return n->val.p;
4023: } else {
4024: found = 1;
4025: break;
1.187 schwarze 4026: }
4027: }
1.197 schwarze 4028: for (i = 0; i < PREDEFS_MAX; i++) {
4029: if (strncmp(name, predefs[i].name, len) != 0 ||
4030: predefs[i].name[len] != '\0')
4031: continue;
4032: if (*deftype & ROFFDEF_PRE) {
4033: *deftype = ROFFDEF_PRE;
4034: return predefs[i].str;
4035: } else {
4036: found = 1;
4037: break;
1.187 schwarze 4038: }
4039: }
1.228 schwarze 4040: if (r->man->meta.macroset != MACROSET_MAN) {
1.197 schwarze 4041: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4042: if (strncmp(name, roff_name[tok], len) != 0 ||
4043: roff_name[tok][len] != '\0')
4044: continue;
4045: if (*deftype & ROFFDEF_STD) {
4046: *deftype = ROFFDEF_STD;
4047: return NULL;
4048: } else {
4049: found = 1;
4050: break;
1.187 schwarze 4051: }
4052: }
4053: }
1.228 schwarze 4054: if (r->man->meta.macroset != MACROSET_MDOC) {
1.197 schwarze 4055: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4056: if (strncmp(name, roff_name[tok], len) != 0 ||
4057: roff_name[tok][len] != '\0')
4058: continue;
4059: if (*deftype & ROFFDEF_STD) {
4060: *deftype = ROFFDEF_STD;
4061: return NULL;
4062: } else {
4063: found = 1;
4064: break;
1.187 schwarze 4065: }
4066: }
1.197 schwarze 4067: }
4068:
4069: if (found == 0 && *deftype != ROFFDEF_ANY) {
4070: if (*deftype & ROFFDEF_REN) {
4071: /*
4072: * This might still be a request,
4073: * so do not treat it as undefined yet.
4074: */
4075: *deftype = ROFFDEF_UNDEF;
4076: return NULL;
1.187 schwarze 4077: }
1.197 schwarze 4078:
4079: /* Using an undefined string defines it to be empty. */
4080:
4081: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4082: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 4083: }
1.197 schwarze 4084:
1.187 schwarze 4085: *deftype = 0;
1.149 schwarze 4086: return NULL;
1.7 schwarze 4087: }
4088:
1.8 schwarze 4089: static void
1.42 schwarze 4090: roff_freestr(struct roffkv *r)
1.7 schwarze 4091: {
1.42 schwarze 4092: struct roffkv *n, *nn;
1.7 schwarze 4093:
1.42 schwarze 4094: for (n = r; n; n = nn) {
4095: free(n->key.p);
4096: free(n->val.p);
1.7 schwarze 4097: nn = n->next;
4098: free(n);
4099: }
1.27 schwarze 4100: }
1.138 schwarze 4101:
4102: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 4103:
4104: /*
4105: * Duplicate an input string, making the appropriate character
4106: * conversations (as stipulated by `tr') along the way.
4107: * Returns a heap-allocated string with all the replacements made.
4108: */
4109: char *
4110: roff_strdup(const struct roff *r, const char *p)
4111: {
4112: const struct roffkv *cp;
4113: char *res;
4114: const char *pp;
4115: size_t ssz, sz;
4116: enum mandoc_esc esc;
4117:
4118: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 4119: return mandoc_strdup(p);
1.42 schwarze 4120: else if ('\0' == *p)
1.149 schwarze 4121: return mandoc_strdup("");
1.42 schwarze 4122:
4123: /*
4124: * Step through each character looking for term matches
4125: * (remember that a `tr' can be invoked with an escape, which is
4126: * a glyph but the escape is multi-character).
4127: * We only do this if the character hash has been initialised
4128: * and the string is >0 length.
4129: */
4130:
4131: res = NULL;
4132: ssz = 0;
4133:
4134: while ('\0' != *p) {
1.161 schwarze 4135: assert((unsigned int)*p < 128);
4136: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 4137: sz = r->xtab[(int)*p].sz;
4138: res = mandoc_realloc(res, ssz + sz + 1);
4139: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4140: ssz += sz;
4141: p++;
4142: continue;
4143: } else if ('\\' != *p) {
4144: res = mandoc_realloc(res, ssz + 2);
4145: res[ssz++] = *p++;
4146: continue;
4147: }
4148:
4149: /* Search for term matches. */
4150: for (cp = r->xmbtab; cp; cp = cp->next)
4151: if (0 == strncmp(p, cp->key.p, cp->key.sz))
4152: break;
4153:
4154: if (NULL != cp) {
4155: /*
4156: * A match has been found.
4157: * Append the match to the array and move
4158: * forward by its keysize.
4159: */
1.80 schwarze 4160: res = mandoc_realloc(res,
4161: ssz + cp->val.sz + 1);
1.42 schwarze 4162: memcpy(res + ssz, cp->val.p, cp->val.sz);
4163: ssz += cp->val.sz;
4164: p += (int)cp->key.sz;
4165: continue;
4166: }
4167:
4168: /*
4169: * Handle escapes carefully: we need to copy
4170: * over just the escape itself, or else we might
4171: * do replacements within the escape itself.
4172: * Make sure to pass along the bogus string.
4173: */
4174: pp = p++;
4175: esc = mandoc_escape(&p, NULL, NULL);
4176: if (ESCAPE_ERROR == esc) {
4177: sz = strlen(pp);
4178: res = mandoc_realloc(res, ssz + sz + 1);
4179: memcpy(res + ssz, pp, sz);
4180: break;
4181: }
1.80 schwarze 4182: /*
4183: * We bail out on bad escapes.
1.42 schwarze 4184: * No need to warn: we already did so when
1.227 schwarze 4185: * roff_expand() was called.
1.42 schwarze 4186: */
4187: sz = (int)(p - pp);
4188: res = mandoc_realloc(res, ssz + sz + 1);
4189: memcpy(res + ssz, pp, sz);
4190: ssz += sz;
4191: }
4192:
4193: res[(int)ssz] = '\0';
1.149 schwarze 4194: return res;
1.99 schwarze 4195: }
4196:
4197: int
4198: roff_getformat(const struct roff *r)
4199: {
4200:
1.149 schwarze 4201: return r->format;
1.48 schwarze 4202: }
4203:
4204: /*
1.80 schwarze 4205: * Find out whether a line is a macro line or not.
1.48 schwarze 4206: * If it is, adjust the current position and return one; if it isn't,
4207: * return zero and don't change the current position.
4208: * If the control character has been set with `.cc', then let that grain
4209: * precedence.
4210: * This is slighly contrary to groff, where using the non-breaking
4211: * control character when `cc' has been invoked will cause the
4212: * non-breaking macro contents to be printed verbatim.
4213: */
4214: int
4215: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4216: {
4217: int pos;
4218:
4219: pos = *ppos;
4220:
1.175 schwarze 4221: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 4222: pos++;
1.175 schwarze 4223: else if (r->control != '\0')
1.149 schwarze 4224: return 0;
1.48 schwarze 4225: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4226: pos += 2;
4227: else if ('.' == cp[pos] || '\'' == cp[pos])
4228: pos++;
4229: else
1.149 schwarze 4230: return 0;
1.48 schwarze 4231:
4232: while (' ' == cp[pos] || '\t' == cp[pos])
4233: pos++;
4234:
4235: *ppos = pos;
1.149 schwarze 4236: return 1;
1.1 schwarze 4237: }
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