Annotation of src/usr.bin/mandoc/roff.c, Revision 1.186
1.186 ! schwarze 1: /* $OpenBSD: roff.c,v 1.185 2017/06/17 22:40:27 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.159 schwarze 4: * Copyright (c) 2010-2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.167 schwarze 23: #include <stddef.h>
24: #include <stdint.h>
1.51 schwarze 25: #include <stdio.h>
1.1 schwarze 26: #include <stdlib.h>
27: #include <string.h>
28:
29: #include "mandoc.h"
1.74 schwarze 30: #include "mandoc_aux.h"
1.167 schwarze 31: #include "mandoc_ohash.h"
1.137 schwarze 32: #include "roff.h"
1.98 daniel 33: #include "libmandoc.h"
1.138 schwarze 34: #include "roff_int.h"
1.27 schwarze 35: #include "libroff.h"
1.2 schwarze 36:
1.43 schwarze 37: /* Maximum number of string expansions per line, to break infinite loops. */
38: #define EXPAND_LIMIT 1000
39:
1.138 schwarze 40: /* --- data types --------------------------------------------------------- */
41:
1.41 schwarze 42: /*
1.42 schwarze 43: * An incredibly-simple string buffer.
44: */
1.8 schwarze 45: struct roffstr {
1.42 schwarze 46: char *p; /* nil-terminated buffer */
47: size_t sz; /* saved strlen(p) */
48: };
49:
50: /*
51: * A key-value roffstr pair as part of a singly-linked list.
52: */
53: struct roffkv {
54: struct roffstr key;
55: struct roffstr val;
56: struct roffkv *next; /* next in list */
1.8 schwarze 57: };
58:
1.52 schwarze 59: /*
60: * A single number register as part of a singly-linked list.
61: */
62: struct roffreg {
63: struct roffstr key;
1.53 schwarze 64: int val;
1.52 schwarze 65: struct roffreg *next;
66: };
67:
1.167 schwarze 68: /*
69: * Association of request and macro names with token IDs.
70: */
71: struct roffreq {
72: enum roff_tok tok;
73: char name[];
74: };
75:
1.1 schwarze 76: struct roff {
1.35 schwarze 77: struct mparse *parse; /* parse point */
1.168 schwarze 78: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 79: struct roffnode *last; /* leaf of stack */
1.96 schwarze 80: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 81: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 82: struct roffreg *regtab; /* number registers */
1.42 schwarze 83: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 84: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 85: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
86: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 87: const char *current_string; /* value of last called user macro */
1.27 schwarze 88: struct tbl_node *first_tbl; /* first table parsed */
89: struct tbl_node *last_tbl; /* last table parsed */
90: struct tbl_node *tbl; /* current table being parsed */
1.32 schwarze 91: struct eqn_node *last_eqn; /* last equation parsed */
92: struct eqn_node *first_eqn; /* first equation parsed */
93: struct eqn_node *eqn; /* current equation being parsed */
1.102 schwarze 94: int eqn_inline; /* current equation is inline */
1.96 schwarze 95: int options; /* parse options */
96: int rstacksz; /* current size limit of rstack */
97: int rstackpos; /* position in rstack */
1.99 schwarze 98: int format; /* current file in mdoc or man format */
1.145 schwarze 99: int argc; /* number of args of the last macro */
1.96 schwarze 100: char control; /* control character */
1.175 schwarze 101: char escape; /* escape character */
1.1 schwarze 102: };
103:
104: struct roffnode {
1.166 schwarze 105: enum roff_tok tok; /* type of node */
1.1 schwarze 106: struct roffnode *parent; /* up one in stack */
107: int line; /* parse line */
108: int col; /* parse col */
1.16 schwarze 109: char *name; /* node name, e.g. macro name */
1.2 schwarze 110: char *end; /* end-rules: custom token */
111: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 112: int rule; /* current evaluation rule */
1.1 schwarze 113: };
114:
115: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 116: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 117: struct buf *buf, /* input buffer */ \
1.1 schwarze 118: int ln, /* parse line */ \
1.2 schwarze 119: int ppos, /* original pos in buffer */ \
120: int pos, /* current pos in buffer */ \
121: int *offs /* reset offset of buffer data */
1.1 schwarze 122:
123: typedef enum rofferr (*roffproc)(ROFF_ARGS);
124:
125: struct roffmac {
1.2 schwarze 126: roffproc proc; /* process new macro */
127: roffproc text; /* process as child text of macro */
128: roffproc sub; /* process as child of macro */
129: int flags;
130: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 131: };
132:
1.37 schwarze 133: struct predef {
134: const char *name; /* predefined input name */
135: const char *str; /* replacement symbol */
136: };
137:
138: #define PREDEF(__name, __str) \
139: { (__name), (__str) },
140:
1.138 schwarze 141: /* --- function prototypes ------------------------------------------------ */
142:
1.42 schwarze 143: static void roffnode_cleanscope(struct roff *);
144: static void roffnode_pop(struct roff *);
1.166 schwarze 145: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 146: const char *, int, int);
1.183 schwarze 147: static enum rofferr roff_als(ROFF_ARGS);
1.2 schwarze 148: static enum rofferr roff_block(ROFF_ARGS);
149: static enum rofferr roff_block_text(ROFF_ARGS);
150: static enum rofferr roff_block_sub(ROFF_ARGS);
1.168 schwarze 151: static enum rofferr roff_br(ROFF_ARGS);
1.2 schwarze 152: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 153: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 154: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 155: static enum rofferr roff_cond(ROFF_ARGS);
156: static enum rofferr roff_cond_text(ROFF_ARGS);
157: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 158: static enum rofferr roff_ds(ROFF_ARGS);
1.175 schwarze 159: static enum rofferr roff_ec(ROFF_ARGS);
160: static enum rofferr roff_eo(ROFF_ARGS);
1.110 schwarze 161: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 162: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 163: static int roff_evalnum(struct roff *, int,
164: const char *, int *, int *, int);
165: static int roff_evalpar(struct roff *, int,
1.133 schwarze 166: const char *, int *, int *, int);
1.71 schwarze 167: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 168: static void roff_free1(struct roff *);
1.52 schwarze 169: static void roff_freereg(struct roffreg *);
1.42 schwarze 170: static void roff_freestr(struct roffkv *);
1.85 schwarze 171: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 172: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 173: static int roff_getop(const char *, int *, char *);
1.53 schwarze 174: static int roff_getregn(const struct roff *,
175: const char *, size_t);
1.145 schwarze 176: static int roff_getregro(const struct roff *,
177: const char *name);
1.178 schwarze 178: static const char *roff_getrenn(const struct roff *,
179: const char *, size_t);
1.80 schwarze 180: static const char *roff_getstrn(const struct roff *,
1.8 schwarze 181: const char *, size_t);
1.143 schwarze 182: static int roff_hasregn(const struct roff *,
183: const char *, size_t);
1.123 schwarze 184: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 185: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 186: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 187: static void roff_man_alloc1(struct roff_man *);
188: static void roff_man_free1(struct roff_man *);
1.172 schwarze 189: static enum rofferr roff_manyarg(ROFF_ARGS);
1.6 schwarze 190: static enum rofferr roff_nr(ROFF_ARGS);
1.169 schwarze 191: static enum rofferr roff_onearg(ROFF_ARGS);
1.166 schwarze 192: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 193: int, int);
1.177 schwarze 194: static enum rofferr roff_parsetext(struct roff *, struct buf *,
195: int, int *);
1.178 schwarze 196: static enum rofferr roff_renamed(ROFF_ARGS);
1.110 schwarze 197: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 198: static enum rofferr roff_rm(ROFF_ARGS);
1.178 schwarze 199: static enum rofferr roff_rn(ROFF_ARGS);
1.76 schwarze 200: static enum rofferr roff_rr(ROFF_ARGS);
1.8 schwarze 201: static void roff_setstr(struct roff *,
1.16 schwarze 202: const char *, const char *, int);
1.80 schwarze 203: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 204: size_t, const char *, size_t, int);
1.14 schwarze 205: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 206: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 207: static enum rofferr roff_Dd(ROFF_ARGS);
208: static enum rofferr roff_TH(ROFF_ARGS);
1.27 schwarze 209: static enum rofferr roff_TE(ROFF_ARGS);
210: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 211: static enum rofferr roff_EQ(ROFF_ARGS);
212: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 213: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 214: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 215: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 216:
1.138 schwarze 217: /* --- constant data ------------------------------------------------------ */
218:
1.133 schwarze 219: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
220: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
221:
1.166 schwarze 222: const char *__roff_name[MAN_MAX + 1] = {
1.177 schwarze 223: "br", "ce", "ft", "ll",
1.184 schwarze 224: "mc", "po", "rj", "sp",
225: "ta", "ti", NULL,
1.166 schwarze 226: "ab", "ad", "af", "aln",
227: "als", "am", "am1", "ami",
228: "ami1", "as", "as1", "asciify",
229: "backtrace", "bd", "bleedat", "blm",
230: "box", "boxa", "bp", "BP",
231: "break", "breakchar", "brnl", "brp",
1.177 schwarze 232: "brpnl", "c2", "cc",
1.166 schwarze 233: "cf", "cflags", "ch", "char",
234: "chop", "class", "close", "CL",
235: "color", "composite", "continue", "cp",
236: "cropat", "cs", "cu", "da",
237: "dch", "Dd", "de", "de1",
238: "defcolor", "dei", "dei1", "device",
239: "devicem", "di", "do", "ds",
240: "ds1", "dwh", "dt", "ec",
241: "ecr", "ecs", "el", "em",
242: "EN", "eo", "EP", "EQ",
243: "errprint", "ev", "evc", "ex",
244: "fallback", "fam", "fc", "fchar",
245: "fcolor", "fdeferlig", "feature", "fkern",
246: "fl", "flig", "fp", "fps",
247: "fschar", "fspacewidth", "fspecial", "ftr",
248: "fzoom", "gcolor", "hc", "hcode",
249: "hidechar", "hla", "hlm", "hpf",
250: "hpfa", "hpfcode", "hw", "hy",
251: "hylang", "hylen", "hym", "hypp",
252: "hys", "ie", "if", "ig",
253: "index", "it", "itc", "IX",
254: "kern", "kernafter", "kernbefore", "kernpair",
255: "lc", "lc_ctype", "lds", "length",
256: "letadj", "lf", "lg", "lhang",
257: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 258: "ls", "lsm", "lt",
1.166 schwarze 259: "mediasize", "minss", "mk", "mso",
260: "na", "ne", "nh", "nhychar",
261: "nm", "nn", "nop", "nr",
262: "nrf", "nroff", "ns", "nx",
263: "open", "opena", "os", "output",
264: "padj", "papersize", "pc", "pev",
265: "pi", "PI", "pl", "pm",
1.184 schwarze 266: "pn", "pnr", "ps",
1.166 schwarze 267: "psbb", "pshape", "pso", "ptr",
268: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 269: "return", "rfschar", "rhang",
1.166 schwarze 270: "rm", "rn", "rnn", "rr",
271: "rs", "rt", "schar", "sentchar",
272: "shc", "shift", "sizes", "so",
273: "spacewidth", "special", "spreadwarn", "ss",
274: "sty", "substring", "sv", "sy",
1.172 schwarze 275: "T&", "tc", "TE",
1.173 schwarze 276: "TH", "tkf", "tl",
1.166 schwarze 277: "tm", "tm1", "tmc", "tr",
278: "track", "transchar", "trf", "trimat",
279: "trin", "trnt", "troff", "TS",
280: "uf", "ul", "unformat", "unwatch",
281: "unwatchn", "vpt", "vs", "warn",
282: "warnscale", "watch", "watchlength", "watchn",
283: "wh", "while", "write", "writec",
284: "writem", "xflag", ".", NULL,
1.178 schwarze 285: NULL, "text",
1.166 schwarze 286: "Dd", "Dt", "Os", "Sh",
287: "Ss", "Pp", "D1", "Dl",
288: "Bd", "Ed", "Bl", "El",
289: "It", "Ad", "An", "Ap",
290: "Ar", "Cd", "Cm", "Dv",
291: "Er", "Ev", "Ex", "Fa",
292: "Fd", "Fl", "Fn", "Ft",
293: "Ic", "In", "Li", "Nd",
294: "Nm", "Op", "Ot", "Pa",
295: "Rv", "St", "Va", "Vt",
296: "Xr", "%A", "%B", "%D",
297: "%I", "%J", "%N", "%O",
298: "%P", "%R", "%T", "%V",
299: "Ac", "Ao", "Aq", "At",
300: "Bc", "Bf", "Bo", "Bq",
301: "Bsx", "Bx", "Db", "Dc",
302: "Do", "Dq", "Ec", "Ef",
303: "Em", "Eo", "Fx", "Ms",
304: "No", "Ns", "Nx", "Ox",
305: "Pc", "Pf", "Po", "Pq",
306: "Qc", "Ql", "Qo", "Qq",
307: "Re", "Rs", "Sc", "So",
308: "Sq", "Sm", "Sx", "Sy",
309: "Tn", "Ux", "Xc", "Xo",
310: "Fo", "Fc", "Oo", "Oc",
311: "Bk", "Ek", "Bt", "Hf",
312: "Fr", "Ud", "Lb", "Lp",
313: "Lk", "Mt", "Brq", "Bro",
314: "Brc", "%C", "Es", "En",
1.171 schwarze 315: "Dx", "%Q", "%U", "Ta",
316: NULL,
1.166 schwarze 317: "TH", "SH", "SS", "TP",
318: "LP", "PP", "P", "IP",
319: "HP", "SM", "SB", "BI",
320: "IB", "BR", "RB", "R",
321: "B", "I", "IR", "RI",
1.171 schwarze 322: "nf", "fi",
1.166 schwarze 323: "RE", "RS", "DT", "UC",
1.169 schwarze 324: "PD", "AT", "in",
1.166 schwarze 325: "OP", "EX", "EE", "UR",
1.170 schwarze 326: "UE", NULL
1.166 schwarze 327: };
328: const char *const *roff_name = __roff_name;
329:
330: static struct roffmac roffs[TOKEN_NONE] = {
1.168 schwarze 331: { roff_br, NULL, NULL, 0 }, /* br */
1.177 schwarze 332: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.169 schwarze 333: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 334: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 335: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.184 schwarze 336: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 337: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 338: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 339: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 340: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 341: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 342: { roff_unsupp, NULL, NULL, 0 }, /* ab */
343: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
344: { roff_line_ignore, NULL, NULL, 0 }, /* af */
345: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 346: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 347: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
348: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
349: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
350: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
351: { roff_ds, NULL, NULL, 0 }, /* as */
352: { roff_ds, NULL, NULL, 0 }, /* as1 */
353: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
354: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
355: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
356: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
357: { roff_unsupp, NULL, NULL, 0 }, /* blm */
358: { roff_unsupp, NULL, NULL, 0 }, /* box */
359: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
360: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
361: { roff_unsupp, NULL, NULL, 0 }, /* BP */
362: { roff_unsupp, NULL, NULL, 0 }, /* break */
363: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
364: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 schwarze 365: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 366: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
367: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
368: { roff_cc, NULL, NULL, 0 }, /* cc */
369: { roff_insec, NULL, NULL, 0 }, /* cf */
370: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
371: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
372: { roff_unsupp, NULL, NULL, 0 }, /* char */
373: { roff_unsupp, NULL, NULL, 0 }, /* chop */
374: { roff_line_ignore, NULL, NULL, 0 }, /* class */
375: { roff_insec, NULL, NULL, 0 }, /* close */
376: { roff_unsupp, NULL, NULL, 0 }, /* CL */
377: { roff_line_ignore, NULL, NULL, 0 }, /* color */
378: { roff_unsupp, NULL, NULL, 0 }, /* composite */
379: { roff_unsupp, NULL, NULL, 0 }, /* continue */
380: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
381: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
382: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
383: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
384: { roff_unsupp, NULL, NULL, 0 }, /* da */
385: { roff_unsupp, NULL, NULL, 0 }, /* dch */
386: { roff_Dd, NULL, NULL, 0 }, /* Dd */
387: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
388: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
389: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
390: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
391: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
392: { roff_unsupp, NULL, NULL, 0 }, /* device */
393: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
394: { roff_unsupp, NULL, NULL, 0 }, /* di */
395: { roff_unsupp, NULL, NULL, 0 }, /* do */
396: { roff_ds, NULL, NULL, 0 }, /* ds */
397: { roff_ds, NULL, NULL, 0 }, /* ds1 */
398: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
399: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 400: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 401: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
402: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
403: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
404: { roff_unsupp, NULL, NULL, 0 }, /* em */
405: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 406: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 407: { roff_unsupp, NULL, NULL, 0 }, /* EP */
408: { roff_EQ, NULL, NULL, 0 }, /* EQ */
409: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
410: { roff_unsupp, NULL, NULL, 0 }, /* ev */
411: { roff_unsupp, NULL, NULL, 0 }, /* evc */
412: { roff_unsupp, NULL, NULL, 0 }, /* ex */
413: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
414: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
415: { roff_unsupp, NULL, NULL, 0 }, /* fc */
416: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
417: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
418: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
419: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
420: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
421: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
422: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
423: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
424: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
425: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
426: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
427: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
428: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
429: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
430: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
431: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
432: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
433: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
434: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
435: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
436: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
437: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
438: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
439: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
440: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
441: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
442: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
443: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
444: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
445: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
446: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
447: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
448: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
449: { roff_unsupp, NULL, NULL, 0 }, /* index */
450: { roff_it, NULL, NULL, 0 }, /* it */
451: { roff_unsupp, NULL, NULL, 0 }, /* itc */
452: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
453: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
454: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
455: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
456: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
457: { roff_unsupp, NULL, NULL, 0 }, /* lc */
458: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
459: { roff_unsupp, NULL, NULL, 0 }, /* lds */
460: { roff_unsupp, NULL, NULL, 0 }, /* length */
461: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
462: { roff_insec, NULL, NULL, 0 }, /* lf */
463: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
464: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
465: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
466: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
467: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
468: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
469: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
470: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
471: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
472: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
473: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
474: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
475: { roff_insec, NULL, NULL, 0 }, /* mso */
476: { roff_line_ignore, NULL, NULL, 0 }, /* na */
477: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
478: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
479: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
480: { roff_unsupp, NULL, NULL, 0 }, /* nm */
481: { roff_unsupp, NULL, NULL, 0 }, /* nn */
482: { roff_unsupp, NULL, NULL, 0 }, /* nop */
483: { roff_nr, NULL, NULL, 0 }, /* nr */
484: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
485: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
486: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
487: { roff_insec, NULL, NULL, 0 }, /* nx */
488: { roff_insec, NULL, NULL, 0 }, /* open */
489: { roff_insec, NULL, NULL, 0 }, /* opena */
490: { roff_line_ignore, NULL, NULL, 0 }, /* os */
491: { roff_unsupp, NULL, NULL, 0 }, /* output */
492: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
493: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
494: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
495: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
496: { roff_insec, NULL, NULL, 0 }, /* pi */
497: { roff_unsupp, NULL, NULL, 0 }, /* PI */
498: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
499: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
500: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
501: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
502: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
503: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
504: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
505: { roff_insec, NULL, NULL, 0 }, /* pso */
506: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
507: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
508: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
509: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
510: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
511: { roff_unsupp, NULL, NULL, 0 }, /* return */
512: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
513: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
514: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 515: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 516: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
517: { roff_rr, NULL, NULL, 0 }, /* rr */
518: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
519: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
520: { roff_unsupp, NULL, NULL, 0 }, /* schar */
521: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
522: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
523: { roff_unsupp, NULL, NULL, 0 }, /* shift */
524: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
525: { roff_so, NULL, NULL, 0 }, /* so */
526: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
527: { roff_line_ignore, NULL, NULL, 0 }, /* special */
528: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
529: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
530: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
531: { roff_unsupp, NULL, NULL, 0 }, /* substring */
532: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
533: { roff_insec, NULL, NULL, 0 }, /* sy */
534: { roff_T_, NULL, NULL, 0 }, /* T& */
535: { roff_unsupp, NULL, NULL, 0 }, /* tc */
536: { roff_TE, NULL, NULL, 0 }, /* TE */
537: { roff_TH, NULL, NULL, 0 }, /* TH */
538: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
539: { roff_unsupp, NULL, NULL, 0 }, /* tl */
540: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
541: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
542: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
543: { roff_tr, NULL, NULL, 0 }, /* tr */
544: { roff_line_ignore, NULL, NULL, 0 }, /* track */
545: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
546: { roff_insec, NULL, NULL, 0 }, /* trf */
547: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
548: { roff_unsupp, NULL, NULL, 0 }, /* trin */
549: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
550: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
551: { roff_TS, NULL, NULL, 0 }, /* TS */
552: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
553: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
554: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
555: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
556: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
557: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
558: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
559: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
560: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
561: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
562: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
563: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
564: { roff_unsupp, NULL, NULL, 0 }, /* wh */
565: { roff_unsupp, NULL, NULL, 0 }, /* while */
566: { roff_insec, NULL, NULL, 0 }, /* write */
567: { roff_insec, NULL, NULL, 0 }, /* writec */
568: { roff_insec, NULL, NULL, 0 }, /* writem */
569: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
570: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 571: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 572: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 573: };
574:
1.73 schwarze 575: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.47 schwarze 576: const char *const __mdoc_reserved[] = {
577: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
578: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
579: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
580: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.73 schwarze 581: "Dt", "Dv", "Dx", "D1",
582: "Ec", "Ed", "Ef", "Ek", "El", "Em",
583: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.47 schwarze 584: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.73 schwarze 585: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
586: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.47 schwarze 587: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.73 schwarze 588: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
589: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
590: "Sc", "Sh", "Sm", "So", "Sq",
1.47 schwarze 591: "Ss", "St", "Sx", "Sy",
592: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.73 schwarze 593: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.47 schwarze 594: "%P", "%Q", "%R", "%T", "%U", "%V",
595: NULL
596: };
597:
1.73 schwarze 598: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.47 schwarze 599: const char *const __man_reserved[] = {
1.73 schwarze 600: "AT", "B", "BI", "BR", "DT",
601: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
602: "LP", "OP", "P", "PD", "PP",
603: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
604: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.47 schwarze 605: NULL
606: };
607:
1.37 schwarze 608: /* Array of injected predefined strings. */
609: #define PREDEFS_MAX 38
610: static const struct predef predefs[PREDEFS_MAX] = {
611: #include "predefs.in"
612: };
613:
1.177 schwarze 614: static int roffce_lines; /* number of input lines to center */
615: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 616: static int roffit_lines; /* number of lines to delay */
617: static char *roffit_macro; /* nil-terminated macro line */
618:
1.80 schwarze 619:
1.138 schwarze 620: /* --- request table ------------------------------------------------------ */
621:
1.167 schwarze 622: struct ohash *
623: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 624: {
1.167 schwarze 625: struct ohash *htab;
626: struct roffreq *req;
627: enum roff_tok tok;
628: size_t sz;
629: unsigned int slot;
1.3 schwarze 630:
1.167 schwarze 631: htab = mandoc_malloc(sizeof(*htab));
632: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 633:
1.167 schwarze 634: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 635: if (roff_name[tok] == NULL)
636: continue;
1.167 schwarze 637: sz = strlen(roff_name[tok]);
638: req = mandoc_malloc(sizeof(*req) + sz + 1);
639: req->tok = tok;
640: memcpy(req->name, roff_name[tok], sz + 1);
641: slot = ohash_qlookup(htab, req->name);
642: ohash_insert(htab, slot, req);
1.3 schwarze 643: }
1.167 schwarze 644: return htab;
1.3 schwarze 645: }
646:
1.167 schwarze 647: void
648: roffhash_free(struct ohash *htab)
1.1 schwarze 649: {
1.167 schwarze 650: struct roffreq *req;
651: unsigned int slot;
1.1 schwarze 652:
1.167 schwarze 653: if (htab == NULL)
654: return;
655: for (req = ohash_first(htab, &slot); req != NULL;
656: req = ohash_next(htab, &slot))
657: free(req);
658: ohash_delete(htab);
659: free(htab);
660: }
661:
662: enum roff_tok
663: roffhash_find(struct ohash *htab, const char *name, size_t sz)
664: {
665: struct roffreq *req;
666: const char *end;
667:
668: if (sz) {
669: end = name + sz;
670: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
671: } else
672: req = ohash_find(htab, ohash_qlookup(htab, name));
673: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 674: }
675:
1.138 schwarze 676: /* --- stack of request blocks -------------------------------------------- */
677:
1.1 schwarze 678: /*
679: * Pop the current node off of the stack of roff instructions currently
680: * pending.
681: */
682: static void
683: roffnode_pop(struct roff *r)
684: {
685: struct roffnode *p;
686:
1.2 schwarze 687: assert(r->last);
1.80 schwarze 688: p = r->last;
1.2 schwarze 689:
690: r->last = r->last->parent;
1.16 schwarze 691: free(p->name);
692: free(p->end);
1.1 schwarze 693: free(p);
694: }
695:
696: /*
697: * Push a roff node onto the instruction stack. This must later be
698: * removed with roffnode_pop().
699: */
1.11 schwarze 700: static void
1.166 schwarze 701: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 702: int line, int col)
1.1 schwarze 703: {
704: struct roffnode *p;
705:
1.11 schwarze 706: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 707: p->tok = tok;
1.16 schwarze 708: if (name)
709: p->name = mandoc_strdup(name);
1.1 schwarze 710: p->parent = r->last;
711: p->line = line;
712: p->col = col;
1.71 schwarze 713: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 714:
715: r->last = p;
716: }
717:
1.138 schwarze 718: /* --- roff parser state data management ---------------------------------- */
719:
1.1 schwarze 720: static void
721: roff_free1(struct roff *r)
722: {
1.49 schwarze 723: struct tbl_node *tbl;
1.32 schwarze 724: struct eqn_node *e;
1.42 schwarze 725: int i;
1.27 schwarze 726:
1.49 schwarze 727: while (NULL != (tbl = r->first_tbl)) {
728: r->first_tbl = tbl->next;
729: tbl_free(tbl);
1.27 schwarze 730: }
731: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 732:
1.32 schwarze 733: while (NULL != (e = r->first_eqn)) {
734: r->first_eqn = e->next;
735: eqn_free(e);
736: }
737: r->first_eqn = r->last_eqn = r->eqn = NULL;
738:
1.1 schwarze 739: while (r->last)
740: roffnode_pop(r);
1.27 schwarze 741:
1.96 schwarze 742: free (r->rstack);
743: r->rstack = NULL;
744: r->rstacksz = 0;
745: r->rstackpos = -1;
746:
747: roff_freereg(r->regtab);
748: r->regtab = NULL;
749:
1.42 schwarze 750: roff_freestr(r->strtab);
1.178 schwarze 751: roff_freestr(r->rentab);
1.42 schwarze 752: roff_freestr(r->xmbtab);
1.178 schwarze 753: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 754:
755: if (r->xtab)
756: for (i = 0; i < 128; i++)
757: free(r->xtab[i].p);
758: free(r->xtab);
759: r->xtab = NULL;
1.1 schwarze 760: }
761:
762: void
763: roff_reset(struct roff *r)
764: {
765: roff_free1(r);
1.99 schwarze 766: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 767: r->control = '\0';
768: r->escape = '\\';
1.179 schwarze 769: roffce_lines = 0;
770: roffce_node = NULL;
771: roffit_lines = 0;
772: roffit_macro = NULL;
1.1 schwarze 773: }
774:
775: void
776: roff_free(struct roff *r)
777: {
778: roff_free1(r);
1.167 schwarze 779: roffhash_free(r->reqtab);
1.1 schwarze 780: free(r);
781: }
782:
783: struct roff *
1.151 schwarze 784: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 785: {
786: struct roff *r;
787:
1.11 schwarze 788: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 789: r->parse = parse;
1.167 schwarze 790: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.72 schwarze 791: r->options = options;
1.99 schwarze 792: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 793: r->rstackpos = -1;
1.175 schwarze 794: r->escape = '\\';
1.149 schwarze 795: return r;
1.137 schwarze 796: }
797:
1.138 schwarze 798: /* --- syntax tree state data management ---------------------------------- */
799:
1.137 schwarze 800: static void
801: roff_man_free1(struct roff_man *man)
802: {
803:
1.138 schwarze 804: if (man->first != NULL)
805: roff_node_delete(man, man->first);
1.137 schwarze 806: free(man->meta.msec);
807: free(man->meta.vol);
808: free(man->meta.os);
809: free(man->meta.arch);
810: free(man->meta.title);
811: free(man->meta.name);
812: free(man->meta.date);
813: }
814:
815: static void
816: roff_man_alloc1(struct roff_man *man)
817: {
818:
819: memset(&man->meta, 0, sizeof(man->meta));
820: man->first = mandoc_calloc(1, sizeof(*man->first));
821: man->first->type = ROFFT_ROOT;
822: man->last = man->first;
823: man->last_es = NULL;
824: man->flags = 0;
825: man->macroset = MACROSET_NONE;
826: man->lastsec = man->lastnamed = SEC_NONE;
827: man->next = ROFF_NEXT_CHILD;
828: }
829:
830: void
831: roff_man_reset(struct roff_man *man)
832: {
833:
834: roff_man_free1(man);
835: roff_man_alloc1(man);
836: }
837:
838: void
839: roff_man_free(struct roff_man *man)
840: {
841:
842: roff_man_free1(man);
843: free(man);
844: }
845:
846: struct roff_man *
847: roff_man_alloc(struct roff *roff, struct mparse *parse,
848: const char *defos, int quick)
849: {
850: struct roff_man *man;
851:
852: man = mandoc_calloc(1, sizeof(*man));
853: man->parse = parse;
854: man->roff = roff;
855: man->defos = defos;
856: man->quick = quick;
857: roff_man_alloc1(man);
1.168 schwarze 858: roff->man = man;
1.149 schwarze 859: return man;
1.1 schwarze 860: }
861:
1.138 schwarze 862: /* --- syntax tree handling ----------------------------------------------- */
863:
864: struct roff_node *
865: roff_node_alloc(struct roff_man *man, int line, int pos,
866: enum roff_type type, int tok)
867: {
868: struct roff_node *n;
869:
870: n = mandoc_calloc(1, sizeof(*n));
871: n->line = line;
872: n->pos = pos;
873: n->tok = tok;
874: n->type = type;
875: n->sec = man->lastsec;
876:
877: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 878: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 879: else
1.157 schwarze 880: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 881: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 882: n->flags |= NODE_LINE;
1.138 schwarze 883: man->flags &= ~MDOC_NEWLINE;
884:
1.149 schwarze 885: return n;
1.138 schwarze 886: }
887:
888: void
889: roff_node_append(struct roff_man *man, struct roff_node *n)
890: {
891:
892: switch (man->next) {
893: case ROFF_NEXT_SIBLING:
1.153 schwarze 894: if (man->last->next != NULL) {
895: n->next = man->last->next;
896: man->last->next->prev = n;
897: } else
898: man->last->parent->last = n;
1.138 schwarze 899: man->last->next = n;
900: n->prev = man->last;
901: n->parent = man->last->parent;
902: break;
903: case ROFF_NEXT_CHILD:
1.159 schwarze 904: if (man->last->child != NULL) {
905: n->next = man->last->child;
906: man->last->child->prev = n;
907: } else
908: man->last->last = n;
1.138 schwarze 909: man->last->child = n;
910: n->parent = man->last;
911: break;
912: default:
913: abort();
914: }
1.154 schwarze 915: man->last = n;
1.138 schwarze 916:
917: switch (n->type) {
918: case ROFFT_HEAD:
919: n->parent->head = n;
920: break;
921: case ROFFT_BODY:
1.154 schwarze 922: if (n->end != ENDBODY_NOT)
923: return;
1.138 schwarze 924: n->parent->body = n;
925: break;
926: case ROFFT_TAIL:
927: n->parent->tail = n;
928: break;
929: default:
1.154 schwarze 930: return;
1.138 schwarze 931: }
1.154 schwarze 932:
933: /*
934: * Copy over the normalised-data pointer of our parent. Not
935: * everybody has one, but copying a null pointer is fine.
936: */
937:
938: n->norm = n->parent->norm;
939: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 940: }
941:
1.139 schwarze 942: void
943: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
944: {
945: struct roff_node *n;
946:
947: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
948: n->string = roff_strdup(man->roff, word);
949: roff_node_append(man, n);
1.158 schwarze 950: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 951: man->next = ROFF_NEXT_SIBLING;
952: }
953:
954: void
955: roff_word_append(struct roff_man *man, const char *word)
956: {
957: struct roff_node *n;
958: char *addstr, *newstr;
959:
960: n = man->last;
961: addstr = roff_strdup(man->roff, word);
962: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
963: free(addstr);
964: free(n->string);
965: n->string = newstr;
966: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 967: }
968:
969: void
970: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
971: {
972: struct roff_node *n;
973:
974: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
975: roff_node_append(man, n);
976: man->next = ROFF_NEXT_CHILD;
977: }
978:
979: struct roff_node *
980: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
981: {
982: struct roff_node *n;
983:
984: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
985: roff_node_append(man, n);
986: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 987: return n;
1.139 schwarze 988: }
989:
1.138 schwarze 990: struct roff_node *
991: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
992: {
993: struct roff_node *n;
994:
995: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
996: roff_node_append(man, n);
997: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 998: return n;
1.138 schwarze 999: }
1000:
1001: struct roff_node *
1002: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1003: {
1004: struct roff_node *n;
1005:
1006: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1007: roff_node_append(man, n);
1008: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1009: return n;
1.139 schwarze 1010: }
1011:
1012: void
1013: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1014: {
1015: struct roff_node *n;
1016:
1017: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1018: n->eqn = eqn;
1019: if (eqn->ln > man->last->line)
1.157 schwarze 1020: n->flags |= NODE_LINE;
1.139 schwarze 1021: roff_node_append(man, n);
1022: man->next = ROFF_NEXT_SIBLING;
1023: }
1024:
1025: void
1026: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1027: {
1028: struct roff_node *n;
1029:
1030: if (man->macroset == MACROSET_MAN)
1.174 schwarze 1031: man_breakscope(man, ROFF_TS);
1.139 schwarze 1032: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1033: n->span = tbl;
1034: roff_node_append(man, n);
1.158 schwarze 1035: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 1036: man->next = ROFF_NEXT_SIBLING;
1.138 schwarze 1037: }
1038:
1039: void
1040: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1041: {
1042:
1043: /* Adjust siblings. */
1044:
1045: if (n->prev)
1046: n->prev->next = n->next;
1047: if (n->next)
1048: n->next->prev = n->prev;
1049:
1050: /* Adjust parent. */
1051:
1052: if (n->parent != NULL) {
1053: if (n->parent->child == n)
1054: n->parent->child = n->next;
1055: if (n->parent->last == n)
1056: n->parent->last = n->prev;
1057: }
1058:
1059: /* Adjust parse point. */
1060:
1061: if (man == NULL)
1062: return;
1063: if (man->last == n) {
1064: if (n->prev == NULL) {
1065: man->last = n->parent;
1066: man->next = ROFF_NEXT_CHILD;
1067: } else {
1068: man->last = n->prev;
1069: man->next = ROFF_NEXT_SIBLING;
1070: }
1071: }
1072: if (man->first == n)
1073: man->first = NULL;
1074: }
1075:
1076: void
1077: roff_node_free(struct roff_node *n)
1078: {
1079:
1080: if (n->args != NULL)
1081: mdoc_argv_free(n->args);
1082: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1083: free(n->norm);
1084: free(n->string);
1085: free(n);
1086: }
1087:
1088: void
1089: roff_node_delete(struct roff_man *man, struct roff_node *n)
1090: {
1091:
1092: while (n->child != NULL)
1093: roff_node_delete(man, n->child);
1094: roff_node_unlink(man, n);
1095: roff_node_free(n);
1.141 schwarze 1096: }
1097:
1098: void
1099: deroff(char **dest, const struct roff_node *n)
1100: {
1101: char *cp;
1102: size_t sz;
1103:
1104: if (n->type != ROFFT_TEXT) {
1105: for (n = n->child; n != NULL; n = n->next)
1106: deroff(dest, n);
1107: return;
1108: }
1109:
1.160 schwarze 1110: /* Skip leading whitespace. */
1.141 schwarze 1111:
1.160 schwarze 1112: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1113: if (cp[0] == '\\' && cp[1] != '\0' &&
1114: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1115: cp++;
1.160 schwarze 1116: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1117: break;
1118: }
1119:
1.161 schwarze 1120: /* Skip trailing backslash. */
1121:
1122: sz = strlen(cp);
1.162 schwarze 1123: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1124: sz--;
1125:
1.141 schwarze 1126: /* Skip trailing whitespace. */
1127:
1.161 schwarze 1128: for (; sz; sz--)
1.141 schwarze 1129: if ( ! isspace((unsigned char)cp[sz-1]))
1130: break;
1131:
1132: /* Skip empty strings. */
1133:
1134: if (sz == 0)
1135: return;
1136:
1137: if (*dest == NULL) {
1138: *dest = mandoc_strndup(cp, sz);
1139: return;
1140: }
1141:
1142: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1143: free(*dest);
1144: *dest = cp;
1.138 schwarze 1145: }
1146:
1147: /* --- main functions of the roff parser ---------------------------------- */
1148:
1.8 schwarze 1149: /*
1.79 schwarze 1150: * In the current line, expand escape sequences that tend to get
1151: * used in numerical expressions and conditional requests.
1152: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1153: */
1.45 schwarze 1154: static enum rofferr
1.110 schwarze 1155: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1156: {
1.81 schwarze 1157: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1158: const char *start; /* start of the string to process */
1.82 schwarze 1159: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1160: const char *stnam; /* start of the name, after "[(*" */
1161: const char *cp; /* end of the name, e.g. before ']' */
1162: const char *res; /* the string to be substituted */
1.110 schwarze 1163: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1164: size_t maxl; /* expected length of the escape name */
1165: size_t naml; /* actual length of the escape name */
1.109 schwarze 1166: enum mandoc_esc esc; /* type of the escape sequence */
1.185 schwarze 1167: enum mdoc_os os_e; /* kind of RCS id seen */
1.109 schwarze 1168: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1169: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1170: int npos; /* position in numeric expression */
1.91 schwarze 1171: int arg_complete; /* argument not interrupted by eol */
1.175 schwarze 1172: int done; /* no more input available */
1.79 schwarze 1173: char term; /* character terminating the escape */
1.8 schwarze 1174:
1.175 schwarze 1175: /* Search forward for comments. */
1176:
1177: done = 0;
1178: start = buf->buf + pos;
1179: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1180: if (stesc[0] != r->escape || stesc[1] == '\0')
1181: continue;
1182: stesc++;
1183: if (*stesc != '"' && *stesc != '#')
1184: continue;
1.185 schwarze 1185:
1186: /* Comment found, look for RCS id. */
1187:
1188: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1189: os_e = MDOC_OS_OPENBSD;
1190: cp += 8;
1191: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1192: os_e = MDOC_OS_NETBSD;
1193: cp += 7;
1194: }
1195: if (cp != NULL &&
1196: isalnum((unsigned char)*cp) == 0 &&
1.186 ! schwarze 1197: strchr(cp, '$') != NULL) {
! 1198: if (r->man->meta.rcsids & (1 << os_e))
! 1199: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
! 1200: ln, stesc + 1 - buf->buf, stesc + 1);
1.185 schwarze 1201: r->man->meta.rcsids |= 1 << os_e;
1.186 ! schwarze 1202: }
1.185 schwarze 1203:
1204: /* Handle trailing whitespace. */
1205:
1.175 schwarze 1206: cp = strchr(stesc--, '\0') - 1;
1207: if (*cp == '\n') {
1208: done = 1;
1209: cp--;
1210: }
1211: if (*cp == ' ' || *cp == '\t')
1212: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1213: ln, cp - buf->buf, NULL);
1214: while (stesc > start && stesc[-1] == ' ')
1215: stesc--;
1216: *stesc = '\0';
1217: break;
1218: }
1219: if (stesc == start)
1220: return ROFF_CONT;
1221: stesc--;
1222:
1223: /* Notice the end of the input. */
1224:
1225: if (*stesc == '\n') {
1226: *stesc-- = '\0';
1227: done = 1;
1228: }
1229:
1.43 schwarze 1230: expand_count = 0;
1.175 schwarze 1231: while (stesc >= start) {
1.43 schwarze 1232:
1.78 schwarze 1233: /* Search backwards for the next backslash. */
1234:
1.175 schwarze 1235: if (*stesc != r->escape) {
1236: if (*stesc == '\\') {
1237: *stesc = '\0';
1238: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1239: buf->buf, stesc + 1) + 1;
1240: start = nbuf + pos;
1241: stesc = nbuf + (stesc - buf->buf);
1242: free(buf->buf);
1243: buf->buf = nbuf;
1244: }
1245: stesc--;
1.78 schwarze 1246: continue;
1.175 schwarze 1247: }
1.78 schwarze 1248:
1249: /* If it is escaped, skip it. */
1250:
1251: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1252: if (*cp != r->escape)
1.78 schwarze 1253: break;
1254:
1.110 schwarze 1255: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1256: while (stesc > cp)
1257: *stesc-- = '\\';
1.78 schwarze 1258: continue;
1.175 schwarze 1259: } else if (stesc[1] != '\0') {
1260: *stesc = '\\';
1261: } else {
1262: *stesc-- = '\0';
1263: if (done)
1264: continue;
1265: else
1266: return ROFF_APPEND;
1.78 schwarze 1267: }
1.23 schwarze 1268:
1.79 schwarze 1269: /* Decide whether to expand or to check only. */
1.23 schwarze 1270:
1.79 schwarze 1271: term = '\0';
1.78 schwarze 1272: cp = stesc + 1;
1.53 schwarze 1273: switch (*cp) {
1.80 schwarze 1274: case '*':
1.53 schwarze 1275: res = NULL;
1276: break;
1.80 schwarze 1277: case 'B':
1278: case 'w':
1.79 schwarze 1279: term = cp[1];
1280: /* FALLTHROUGH */
1.80 schwarze 1281: case 'n':
1.53 schwarze 1282: res = ubuf;
1283: break;
1284: default:
1.109 schwarze 1285: esc = mandoc_escape(&cp, &stnam, &inaml);
1286: if (esc == ESCAPE_ERROR ||
1287: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1288: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1289: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1290: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1291: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1292: stesc--;
1.78 schwarze 1293: continue;
1.42 schwarze 1294: }
1295:
1.78 schwarze 1296: if (EXPAND_LIMIT < ++expand_count) {
1297: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1298: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1299: return ROFF_IGN;
1.78 schwarze 1300: }
1.23 schwarze 1301:
1302: /*
1303: * The third character decides the length
1.53 schwarze 1304: * of the name of the string or register.
1.23 schwarze 1305: * Save a pointer to the name.
1306: */
1307:
1.110 schwarze 1308: if (term == '\0') {
1.79 schwarze 1309: switch (*++cp) {
1.80 schwarze 1310: case '\0':
1.79 schwarze 1311: maxl = 0;
1312: break;
1.80 schwarze 1313: case '(':
1.79 schwarze 1314: cp++;
1315: maxl = 2;
1316: break;
1.80 schwarze 1317: case '[':
1.79 schwarze 1318: cp++;
1319: term = ']';
1320: maxl = 0;
1321: break;
1322: default:
1323: maxl = 1;
1324: break;
1325: }
1326: } else {
1327: cp += 2;
1.8 schwarze 1328: maxl = 0;
1329: }
1.23 schwarze 1330: stnam = cp;
1.8 schwarze 1331:
1.23 schwarze 1332: /* Advance to the end of the name. */
1.8 schwarze 1333:
1.125 schwarze 1334: naml = 0;
1.91 schwarze 1335: arg_complete = 1;
1.125 schwarze 1336: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1337: if (*cp == '\0') {
1.92 schwarze 1338: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1339: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1340: arg_complete = 0;
1.79 schwarze 1341: break;
1.42 schwarze 1342: }
1.110 schwarze 1343: if (maxl == 0 && *cp == term) {
1.79 schwarze 1344: cp++;
1.125 schwarze 1345: break;
1346: }
1347: if (*cp++ != '\\' || stesc[1] != 'w') {
1348: naml++;
1349: continue;
1350: }
1351: switch (mandoc_escape(&cp, NULL, NULL)) {
1352: case ESCAPE_SPECIAL:
1353: case ESCAPE_UNICODE:
1354: case ESCAPE_NUMBERED:
1355: case ESCAPE_OVERSTRIKE:
1356: naml++;
1357: break;
1358: default:
1.8 schwarze 1359: break;
1.79 schwarze 1360: }
1.8 schwarze 1361: }
1362:
1.23 schwarze 1363: /*
1364: * Retrieve the replacement string; if it is
1365: * undefined, resume searching for escapes.
1366: */
1367:
1.79 schwarze 1368: switch (stesc[1]) {
1.80 schwarze 1369: case '*':
1.91 schwarze 1370: if (arg_complete)
1371: res = roff_getstrn(r, stnam, naml);
1.79 schwarze 1372: break;
1.80 schwarze 1373: case 'B':
1.79 schwarze 1374: npos = 0;
1.91 schwarze 1375: ubuf[0] = arg_complete &&
1.133 schwarze 1376: roff_evalnum(r, ln, stnam, &npos,
1377: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1378: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1379: ubuf[1] = '\0';
1380: break;
1.80 schwarze 1381: case 'n':
1.91 schwarze 1382: if (arg_complete)
1383: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1384: roff_getregn(r, stnam, naml));
1385: else
1386: ubuf[0] = '\0';
1.79 schwarze 1387: break;
1.80 schwarze 1388: case 'w':
1.91 schwarze 1389: /* use even incomplete args */
1.81 schwarze 1390: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1391: 24 * (int)naml);
1392: break;
1393: }
1.8 schwarze 1394:
1.110 schwarze 1395: if (res == NULL) {
1.92 schwarze 1396: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1397: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1398: "%.*s", (int)naml, stnam);
1.37 schwarze 1399: res = "";
1.118 schwarze 1400: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1401: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1402: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1403: return ROFF_IGN;
1.8 schwarze 1404: }
1405:
1.23 schwarze 1406: /* Replace the escape sequence by the string. */
1407:
1.82 schwarze 1408: *stesc = '\0';
1.110 schwarze 1409: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1410: buf->buf, res, cp) + 1;
1.8 schwarze 1411:
1.78 schwarze 1412: /* Prepare for the next replacement. */
1.8 schwarze 1413:
1.78 schwarze 1414: start = nbuf + pos;
1.110 schwarze 1415: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1416: free(buf->buf);
1417: buf->buf = nbuf;
1.42 schwarze 1418: }
1.149 schwarze 1419: return ROFF_CONT;
1.42 schwarze 1420: }
1421:
1422: /*
1.147 schwarze 1423: * Process text streams.
1.42 schwarze 1424: */
1425: static enum rofferr
1.177 schwarze 1426: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1427: {
1428: size_t sz;
1429: const char *start;
1.51 schwarze 1430: char *p;
1431: int isz;
1.42 schwarze 1432: enum mandoc_esc esc;
1433:
1.147 schwarze 1434: /* Spring the input line trap. */
1435:
1436: if (roffit_lines == 1) {
1437: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1438: free(buf->buf);
1439: buf->buf = p;
1440: buf->sz = isz + 1;
1441: *offs = 0;
1442: free(roffit_macro);
1443: roffit_lines = 0;
1.149 schwarze 1444: return ROFF_REPARSE;
1.147 schwarze 1445: } else if (roffit_lines > 1)
1446: --roffit_lines;
1447:
1.177 schwarze 1448: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1449: if (roffce_lines < 1) {
1450: r->man->last = roffce_node;
1451: r->man->next = ROFF_NEXT_SIBLING;
1452: roffce_lines = 0;
1453: roffce_node = NULL;
1454: } else
1455: roffce_lines--;
1456: }
1457:
1.147 schwarze 1458: /* Convert all breakable hyphens into ASCII_HYPH. */
1459:
1.110 schwarze 1460: start = p = buf->buf + pos;
1.42 schwarze 1461:
1.110 schwarze 1462: while (*p != '\0') {
1.42 schwarze 1463: sz = strcspn(p, "-\\");
1464: p += sz;
1465:
1.110 schwarze 1466: if (*p == '\0')
1.42 schwarze 1467: break;
1468:
1.110 schwarze 1469: if (*p == '\\') {
1.42 schwarze 1470: /* Skip over escapes. */
1471: p++;
1.62 schwarze 1472: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1473: if (esc == ESCAPE_ERROR)
1.42 schwarze 1474: break;
1.136 schwarze 1475: while (*p == '-')
1476: p++;
1.42 schwarze 1477: continue;
1478: } else if (p == start) {
1479: p++;
1480: continue;
1481: }
1482:
1.44 schwarze 1483: if (isalpha((unsigned char)p[-1]) &&
1484: isalpha((unsigned char)p[1]))
1.42 schwarze 1485: *p = ASCII_HYPH;
1486: p++;
1.8 schwarze 1487: }
1.149 schwarze 1488: return ROFF_CONT;
1.8 schwarze 1489: }
1490:
1.1 schwarze 1491: enum rofferr
1.110 schwarze 1492: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1493: {
1.166 schwarze 1494: enum roff_tok t;
1.27 schwarze 1495: enum rofferr e;
1.110 schwarze 1496: int pos; /* parse point */
1.115 schwarze 1497: int spos; /* saved parse point for messages */
1.110 schwarze 1498: int ppos; /* original offset in buf->buf */
1499: int ctl; /* macro line (boolean) */
1500:
1501: ppos = pos = *offs;
1.1 schwarze 1502:
1.102 schwarze 1503: /* Handle in-line equation delimiters. */
1504:
1.108 schwarze 1505: if (r->tbl == NULL &&
1506: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1507: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1508: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1509: if (e == ROFF_REPARSE)
1.149 schwarze 1510: return e;
1.102 schwarze 1511: assert(e == ROFF_CONT);
1512: }
1513:
1514: /* Expand some escape sequences. */
1.8 schwarze 1515:
1.110 schwarze 1516: e = roff_res(r, buf, ln, pos);
1.175 schwarze 1517: if (e == ROFF_IGN || e == ROFF_APPEND)
1.149 schwarze 1518: return e;
1.110 schwarze 1519: assert(e == ROFF_CONT);
1.8 schwarze 1520:
1.110 schwarze 1521: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1522:
1.8 schwarze 1523: /*
1.2 schwarze 1524: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1525: * text through the macro's filter.
1526: * Equations process all content themselves.
1527: * Tables process almost all content themselves, but we want
1528: * to warn about macros before passing it there.
1.2 schwarze 1529: */
1530:
1.124 schwarze 1531: if (r->last != NULL && ! ctl) {
1.2 schwarze 1532: t = r->last->tok;
1.110 schwarze 1533: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.166 schwarze 1534: if (e == ROFF_IGN)
1.149 schwarze 1535: return e;
1.166 schwarze 1536: assert(e == ROFF_CONT);
1.54 schwarze 1537: }
1.124 schwarze 1538: if (r->eqn != NULL)
1.149 schwarze 1539: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.124 schwarze 1540: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.149 schwarze 1541: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.124 schwarze 1542: if ( ! ctl)
1.177 schwarze 1543: return roff_parsetext(r, buf, pos, offs);
1.100 schwarze 1544:
1545: /* Skip empty request lines. */
1546:
1.110 schwarze 1547: if (buf->buf[pos] == '"') {
1.100 schwarze 1548: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1549: ln, pos, NULL);
1.149 schwarze 1550: return ROFF_IGN;
1.110 schwarze 1551: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1552: return ROFF_IGN;
1.2 schwarze 1553:
1554: /*
1555: * If a scope is open, go to the child handler for that macro,
1556: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1557: * Don't do so if an equation is open.
1.2 schwarze 1558: */
1559:
1560: if (r->last) {
1.1 schwarze 1561: t = r->last->tok;
1.149 schwarze 1562: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1563: }
1564:
1.115 schwarze 1565: /* No scope is open. This is a new request or macro. */
1566:
1567: spos = pos;
1568: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1569:
1570: /* Tables ignore most macros. */
1571:
1.180 schwarze 1572: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1573: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.115 schwarze 1574: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1575: ln, pos, buf->buf + spos);
1.180 schwarze 1576: if (t != TOKEN_NONE)
1.149 schwarze 1577: return ROFF_IGN;
1.129 schwarze 1578: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1579: pos++;
1.163 schwarze 1580: while (buf->buf[pos] == ' ')
1.129 schwarze 1581: pos++;
1.149 schwarze 1582: return tbl_read(r->tbl, ln, buf->buf, pos);
1.115 schwarze 1583: }
1584:
1.177 schwarze 1585: /* For now, let high level macros abort .ce mode. */
1586:
1587: if (ctl && roffce_node != NULL &&
1588: (t == TOKEN_NONE || t == ROFF_EQ || t == ROFF_TS)) {
1589: r->man->last = roffce_node;
1590: r->man->next = ROFF_NEXT_SIBLING;
1591: roffce_lines = 0;
1592: roffce_node = NULL;
1593: }
1594:
1.2 schwarze 1595: /*
1.115 schwarze 1596: * This is neither a roff request nor a user-defined macro.
1597: * Let the standard macro set parsers handle it.
1.2 schwarze 1598: */
1599:
1.166 schwarze 1600: if (t == TOKEN_NONE)
1.149 schwarze 1601: return ROFF_CONT;
1.115 schwarze 1602:
1603: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1604:
1.168 schwarze 1605: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1606: }
1607:
1.27 schwarze 1608: void
1.2 schwarze 1609: roff_endparse(struct roff *r)
1610: {
1.1 schwarze 1611:
1.27 schwarze 1612: if (r->last)
1.94 schwarze 1613: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1614: r->last->line, r->last->col,
1.167 schwarze 1615: roff_name[r->last->tok]);
1.27 schwarze 1616:
1.32 schwarze 1617: if (r->eqn) {
1.94 schwarze 1618: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1619: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1620: eqn_end(&r->eqn);
1.32 schwarze 1621: }
1622:
1.27 schwarze 1623: if (r->tbl) {
1.94 schwarze 1624: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1625: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1626: tbl_end(&r->tbl);
1.27 schwarze 1627: }
1.1 schwarze 1628: }
1629:
1630: /*
1631: * Parse a roff node's type from the input buffer. This must be in the
1632: * form of ".foo xxx" in the usual way.
1633: */
1.166 schwarze 1634: static enum roff_tok
1.87 schwarze 1635: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1636: {
1.87 schwarze 1637: char *cp;
1.16 schwarze 1638: const char *mac;
1639: size_t maclen;
1.166 schwarze 1640: enum roff_tok t;
1.1 schwarze 1641:
1.87 schwarze 1642: cp = buf + *pos;
1643:
1644: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1645: return TOKEN_NONE;
1.1 schwarze 1646:
1.87 schwarze 1647: mac = cp;
1648: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1649:
1.178 schwarze 1650: t = (r->current_string = roff_getstrn(r, mac, maclen)) ?
1651: ROFF_USERDEF :
1652: (r->current_string = roff_getrenn(r, mac, maclen)) ?
1653: ROFF_RENAMED : roffhash_find(r->reqtab, mac, maclen);
1.1 schwarze 1654:
1.166 schwarze 1655: if (t != TOKEN_NONE)
1.87 schwarze 1656: *pos = cp - buf;
1.1 schwarze 1657:
1.149 schwarze 1658: return t;
1.1 schwarze 1659: }
1660:
1.138 schwarze 1661: /* --- handling of request blocks ----------------------------------------- */
1662:
1.1 schwarze 1663: static enum rofferr
1.2 schwarze 1664: roff_cblock(ROFF_ARGS)
1.1 schwarze 1665: {
1666:
1.2 schwarze 1667: /*
1668: * A block-close `..' should only be invoked as a child of an
1669: * ignore macro, otherwise raise a warning and just ignore it.
1670: */
1671:
1.110 schwarze 1672: if (r->last == NULL) {
1.94 schwarze 1673: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1674: ln, ppos, "..");
1.149 schwarze 1675: return ROFF_IGN;
1.2 schwarze 1676: }
1.1 schwarze 1677:
1.2 schwarze 1678: switch (r->last->tok) {
1.80 schwarze 1679: case ROFF_am:
1.93 schwarze 1680: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1681: case ROFF_ami:
1682: case ROFF_de:
1.23 schwarze 1683: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1684: case ROFF_dei:
1685: case ROFF_ig:
1.2 schwarze 1686: break;
1687: default:
1.94 schwarze 1688: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1689: ln, ppos, "..");
1.149 schwarze 1690: return ROFF_IGN;
1.2 schwarze 1691: }
1692:
1.110 schwarze 1693: if (buf->buf[pos] != '\0')
1.90 schwarze 1694: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1695: ".. %s", buf->buf + pos);
1.2 schwarze 1696:
1697: roffnode_pop(r);
1698: roffnode_cleanscope(r);
1.149 schwarze 1699: return ROFF_IGN;
1.2 schwarze 1700:
1701: }
1.1 schwarze 1702:
1.2 schwarze 1703: static void
1704: roffnode_cleanscope(struct roff *r)
1705: {
1.1 schwarze 1706:
1.2 schwarze 1707: while (r->last) {
1.46 schwarze 1708: if (--r->last->endspan != 0)
1.2 schwarze 1709: break;
1710: roffnode_pop(r);
1711: }
1712: }
1.1 schwarze 1713:
1.68 schwarze 1714: static void
1715: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1716: {
1.1 schwarze 1717:
1.2 schwarze 1718: if (NULL == r->last) {
1.94 schwarze 1719: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1720: ln, ppos, "\\}");
1.68 schwarze 1721: return;
1.2 schwarze 1722: }
1.1 schwarze 1723:
1.2 schwarze 1724: switch (r->last->tok) {
1.80 schwarze 1725: case ROFF_el:
1726: case ROFF_ie:
1727: case ROFF_if:
1.2 schwarze 1728: break;
1729: default:
1.94 schwarze 1730: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1731: ln, ppos, "\\}");
1.68 schwarze 1732: return;
1.2 schwarze 1733: }
1.1 schwarze 1734:
1.2 schwarze 1735: if (r->last->endspan > -1) {
1.94 schwarze 1736: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1737: ln, ppos, "\\}");
1.68 schwarze 1738: return;
1.2 schwarze 1739: }
1740:
1741: roffnode_pop(r);
1742: roffnode_cleanscope(r);
1.68 schwarze 1743: return;
1.1 schwarze 1744: }
1745:
1746: static enum rofferr
1.2 schwarze 1747: roff_block(ROFF_ARGS)
1.1 schwarze 1748: {
1.93 schwarze 1749: const char *name;
1750: char *iname, *cp;
1.86 schwarze 1751: size_t namesz;
1.16 schwarze 1752:
1.93 schwarze 1753: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1754:
1.110 schwarze 1755: if (tok == ROFF_de1)
1.93 schwarze 1756: tok = ROFF_de;
1.123 schwarze 1757: else if (tok == ROFF_dei1)
1758: tok = ROFF_dei;
1.110 schwarze 1759: else if (tok == ROFF_am1)
1.93 schwarze 1760: tok = ROFF_am;
1.123 schwarze 1761: else if (tok == ROFF_ami1)
1762: tok = ROFF_ami;
1.93 schwarze 1763:
1764: /* Parse the macro name argument. */
1765:
1.110 schwarze 1766: cp = buf->buf + pos;
1767: if (tok == ROFF_ig) {
1.93 schwarze 1768: iname = NULL;
1769: namesz = 0;
1770: } else {
1771: iname = cp;
1772: namesz = roff_getname(r, &cp, ln, ppos);
1773: iname[namesz] = '\0';
1774: }
1.22 schwarze 1775:
1.93 schwarze 1776: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1777:
1.110 schwarze 1778: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1779: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1780: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1781: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1782: "%.*s", (int)namesz, iname);
1783: namesz = 0;
1784: } else
1785: namesz = strlen(name);
1786: } else
1787: name = iname;
1.22 schwarze 1788:
1.110 schwarze 1789: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1790: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1791: ln, ppos, roff_name[tok]);
1.149 schwarze 1792: return ROFF_IGN;
1.93 schwarze 1793: }
1.2 schwarze 1794:
1.16 schwarze 1795: roffnode_push(r, tok, name, ln, ppos);
1796:
1797: /*
1798: * At the beginning of a `de' macro, clear the existing string
1799: * with the same name, if there is one. New content will be
1.66 schwarze 1800: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1801: */
1.22 schwarze 1802:
1.183 schwarze 1803: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 1804: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 1805: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1806: }
1.2 schwarze 1807:
1.110 schwarze 1808: if (*cp == '\0')
1.149 schwarze 1809: return ROFF_IGN;
1.1 schwarze 1810:
1.93 schwarze 1811: /* Get the custom end marker. */
1.22 schwarze 1812:
1.93 schwarze 1813: iname = cp;
1.86 schwarze 1814: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1815:
1816: /* Resolve the end marker if it is indirect. */
1817:
1.110 schwarze 1818: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1819: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1820: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1821: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1822: "%.*s", (int)namesz, iname);
1823: namesz = 0;
1824: } else
1825: namesz = strlen(name);
1826: } else
1827: name = iname;
1828:
1.86 schwarze 1829: if (namesz)
1830: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1831:
1.110 schwarze 1832: if (*cp != '\0')
1.90 schwarze 1833: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 1834: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 1835:
1.149 schwarze 1836: return ROFF_IGN;
1.1 schwarze 1837: }
1838:
1839: static enum rofferr
1.2 schwarze 1840: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1841: {
1.166 schwarze 1842: enum roff_tok t;
1.2 schwarze 1843: int i, j;
1844:
1845: /*
1846: * First check whether a custom macro exists at this level. If
1847: * it does, then check against it. This is some of groff's
1848: * stranger behaviours. If we encountered a custom end-scope
1849: * tag and that tag also happens to be a "real" macro, then we
1850: * need to try interpreting it again as a real macro. If it's
1851: * not, then return ignore. Else continue.
1852: */
1853:
1854: if (r->last->end) {
1.35 schwarze 1855: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1856: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1857: break;
1.1 schwarze 1858:
1.110 schwarze 1859: if (r->last->end[j] == '\0' &&
1860: (buf->buf[i] == '\0' ||
1861: buf->buf[i] == ' ' ||
1862: buf->buf[i] == '\t')) {
1.2 schwarze 1863: roffnode_pop(r);
1864: roffnode_cleanscope(r);
1.1 schwarze 1865:
1.110 schwarze 1866: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1867: i++;
1868:
1869: pos = i;
1.110 schwarze 1870: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 1871: TOKEN_NONE)
1.149 schwarze 1872: return ROFF_RERUN;
1873: return ROFF_IGN;
1.2 schwarze 1874: }
1.1 schwarze 1875: }
1876:
1.2 schwarze 1877: /*
1878: * If we have no custom end-query or lookup failed, then try
1879: * pulling it out of the hashtable.
1880: */
1.1 schwarze 1881:
1.110 schwarze 1882: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1883:
1.110 schwarze 1884: if (t != ROFF_cblock) {
1885: if (tok != ROFF_ig)
1886: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1887: return ROFF_IGN;
1.16 schwarze 1888: }
1.1 schwarze 1889:
1.149 schwarze 1890: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1891: }
1892:
1893: static enum rofferr
1894: roff_block_text(ROFF_ARGS)
1895: {
1896:
1.110 schwarze 1897: if (tok != ROFF_ig)
1898: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1899:
1.149 schwarze 1900: return ROFF_IGN;
1.2 schwarze 1901: }
1902:
1903: static enum rofferr
1904: roff_cond_sub(ROFF_ARGS)
1905: {
1.166 schwarze 1906: enum roff_tok t;
1.37 schwarze 1907: char *ep;
1.71 schwarze 1908: int rr;
1.2 schwarze 1909:
1910: rr = r->last->rule;
1.37 schwarze 1911: roffnode_cleanscope(r);
1.110 schwarze 1912: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1913:
1.37 schwarze 1914: /*
1.50 schwarze 1915: * Fully handle known macros when they are structurally
1916: * required or when the conditional evaluated to true.
1.5 schwarze 1917: */
1918:
1.166 schwarze 1919: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.149 schwarze 1920: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.39 schwarze 1921:
1.69 schwarze 1922: /*
1923: * If `\}' occurs on a macro line without a preceding macro,
1924: * drop the line completely.
1925: */
1926:
1.110 schwarze 1927: ep = buf->buf + pos;
1928: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1929: rr = 0;
1.69 schwarze 1930:
1.50 schwarze 1931: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1932:
1.110 schwarze 1933: while ((ep = strchr(ep, '\\')) != NULL) {
1934: if (*(++ep) == '}') {
1.70 schwarze 1935: *ep = '&';
1.110 schwarze 1936: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1937: }
1.119 schwarze 1938: if (*ep != '\0')
1939: ++ep;
1.50 schwarze 1940: }
1.149 schwarze 1941: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1942: }
1943:
1944: static enum rofferr
1945: roff_cond_text(ROFF_ARGS)
1946: {
1.37 schwarze 1947: char *ep;
1.71 schwarze 1948: int rr;
1.2 schwarze 1949:
1950: rr = r->last->rule;
1.37 schwarze 1951: roffnode_cleanscope(r);
1.1 schwarze 1952:
1.110 schwarze 1953: ep = buf->buf + pos;
1954: while ((ep = strchr(ep, '\\')) != NULL) {
1955: if (*(++ep) == '}') {
1.70 schwarze 1956: *ep = '&';
1.110 schwarze 1957: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1958: }
1.119 schwarze 1959: if (*ep != '\0')
1960: ++ep;
1.2 schwarze 1961: }
1.149 schwarze 1962: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1963: }
1964:
1.138 schwarze 1965: /* --- handling of numeric and conditional expressions -------------------- */
1966:
1.77 schwarze 1967: /*
1968: * Parse a single signed integer number. Stop at the first non-digit.
1969: * If there is at least one digit, return success and advance the
1970: * parse point, else return failure and let the parse point unchanged.
1971: * Ignore overflows, treat them just like the C language.
1972: */
1.56 schwarze 1973: static int
1.133 schwarze 1974: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 1975: {
1.133 schwarze 1976: int myres, scaled, n, p;
1.79 schwarze 1977:
1978: if (NULL == res)
1979: res = &myres;
1.56 schwarze 1980:
1981: p = *pos;
1982: n = v[p] == '-';
1.133 schwarze 1983: if (n || v[p] == '+')
1.56 schwarze 1984: p++;
1985:
1.133 schwarze 1986: if (flags & ROFFNUM_WHITE)
1987: while (isspace((unsigned char)v[p]))
1988: p++;
1989:
1.56 schwarze 1990: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 1991: *res = 10 * *res + v[p] - '0';
1.56 schwarze 1992: if (p == *pos + n)
1993: return 0;
1994:
1995: if (n)
1996: *res = -*res;
1997:
1.126 schwarze 1998: /* Each number may be followed by one optional scaling unit. */
1999:
2000: switch (v[p]) {
2001: case 'f':
1.133 schwarze 2002: scaled = *res * 65536;
1.126 schwarze 2003: break;
2004: case 'i':
1.133 schwarze 2005: scaled = *res * 240;
1.126 schwarze 2006: break;
2007: case 'c':
1.133 schwarze 2008: scaled = *res * 240 / 2.54;
1.126 schwarze 2009: break;
2010: case 'v':
2011: case 'P':
1.133 schwarze 2012: scaled = *res * 40;
1.126 schwarze 2013: break;
2014: case 'm':
2015: case 'n':
1.133 schwarze 2016: scaled = *res * 24;
1.126 schwarze 2017: break;
2018: case 'p':
1.133 schwarze 2019: scaled = *res * 10 / 3;
1.126 schwarze 2020: break;
2021: case 'u':
1.133 schwarze 2022: scaled = *res;
1.126 schwarze 2023: break;
2024: case 'M':
1.133 schwarze 2025: scaled = *res * 6 / 25;
1.126 schwarze 2026: break;
2027: default:
1.133 schwarze 2028: scaled = *res;
1.126 schwarze 2029: p--;
2030: break;
2031: }
1.133 schwarze 2032: if (flags & ROFFNUM_SCALE)
2033: *res = scaled;
1.126 schwarze 2034:
2035: *pos = p + 1;
1.149 schwarze 2036: return 1;
1.56 schwarze 2037: }
2038:
1.71 schwarze 2039: /*
2040: * Evaluate a string comparison condition.
2041: * The first character is the delimiter.
2042: * Succeed if the string up to its second occurrence
2043: * matches the string up to its third occurence.
2044: * Advance the cursor after the third occurrence
2045: * or lacking that, to the end of the line.
2046: */
2047: static int
2048: roff_evalstrcond(const char *v, int *pos)
2049: {
2050: const char *s1, *s2, *s3;
2051: int match;
2052:
2053: match = 0;
2054: s1 = v + *pos; /* initial delimiter */
2055: s2 = s1 + 1; /* for scanning the first string */
2056: s3 = strchr(s2, *s1); /* for scanning the second string */
2057:
2058: if (NULL == s3) /* found no middle delimiter */
2059: goto out;
2060:
2061: while ('\0' != *++s3) {
2062: if (*s2 != *s3) { /* mismatch */
2063: s3 = strchr(s3, *s1);
2064: break;
2065: }
2066: if (*s3 == *s1) { /* found the final delimiter */
2067: match = 1;
2068: break;
2069: }
2070: s2++;
2071: }
2072:
2073: out:
2074: if (NULL == s3)
2075: s3 = strchr(s2, '\0');
1.114 schwarze 2076: else if (*s3 != '\0')
1.71 schwarze 2077: s3++;
2078: *pos = s3 - v;
1.149 schwarze 2079: return match;
1.71 schwarze 2080: }
2081:
1.77 schwarze 2082: /*
2083: * Evaluate an optionally negated single character, numerical,
2084: * or string condition.
2085: */
1.71 schwarze 2086: static int
1.143 schwarze 2087: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2088: {
1.143 schwarze 2089: char *cp, *name;
2090: size_t sz;
1.182 schwarze 2091: int number, savepos, istrue, wanttrue;
1.5 schwarze 2092:
1.71 schwarze 2093: if ('!' == v[*pos]) {
2094: wanttrue = 0;
2095: (*pos)++;
2096: } else
2097: wanttrue = 1;
2098:
1.5 schwarze 2099: switch (v[*pos]) {
1.112 schwarze 2100: case '\0':
1.149 schwarze 2101: return 0;
1.80 schwarze 2102: case 'n':
2103: case 'o':
1.5 schwarze 2104: (*pos)++;
1.149 schwarze 2105: return wanttrue;
1.80 schwarze 2106: case 'c':
2107: case 'e':
2108: case 't':
1.111 schwarze 2109: case 'v':
1.5 schwarze 2110: (*pos)++;
1.149 schwarze 2111: return !wanttrue;
1.182 schwarze 2112: case 'd':
1.143 schwarze 2113: case 'r':
1.182 schwarze 2114: cp = v + *pos + 1;
2115: while (*cp == ' ')
2116: cp++;
2117: name = cp;
2118: sz = roff_getname(r, &cp, ln, cp - v);
2119: istrue = sz && (v[*pos] == 'r' ? roff_hasregn(r, name, sz) :
2120: (roff_getstrn(r, name, sz) != NULL ||
2121: roff_getrenn(r, name, sz) != NULL));
1.143 schwarze 2122: *pos = cp - v;
1.182 schwarze 2123: return istrue == wanttrue;
1.5 schwarze 2124: default:
2125: break;
2126: }
2127:
1.113 schwarze 2128: savepos = *pos;
1.133 schwarze 2129: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2130: return (number > 0) == wanttrue;
1.113 schwarze 2131: else if (*pos == savepos)
1.149 schwarze 2132: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2133: else
1.149 schwarze 2134: return 0;
1.5 schwarze 2135: }
2136:
1.2 schwarze 2137: static enum rofferr
1.21 schwarze 2138: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2139: {
1.30 schwarze 2140:
1.149 schwarze 2141: return ROFF_IGN;
1.21 schwarze 2142: }
2143:
2144: static enum rofferr
1.123 schwarze 2145: roff_insec(ROFF_ARGS)
2146: {
2147:
2148: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2149: ln, ppos, roff_name[tok]);
1.149 schwarze 2150: return ROFF_IGN;
1.123 schwarze 2151: }
2152:
2153: static enum rofferr
2154: roff_unsupp(ROFF_ARGS)
2155: {
2156:
2157: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2158: ln, ppos, roff_name[tok]);
1.149 schwarze 2159: return ROFF_IGN;
1.123 schwarze 2160: }
2161:
2162: static enum rofferr
1.2 schwarze 2163: roff_cond(ROFF_ARGS)
2164: {
1.46 schwarze 2165:
2166: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2167:
1.80 schwarze 2168: /*
1.35 schwarze 2169: * An `.el' has no conditional body: it will consume the value
2170: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2171: * defaults to DENY.
1.35 schwarze 2172: *
2173: * If we're not an `el', however, then evaluate the conditional.
2174: */
1.1 schwarze 2175:
1.110 schwarze 2176: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2177: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2178: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2179:
1.35 schwarze 2180: /*
2181: * An if-else will put the NEGATION of the current evaluated
2182: * conditional into the stack of rules.
2183: */
2184:
1.110 schwarze 2185: if (tok == ROFF_ie) {
1.96 schwarze 2186: if (r->rstackpos + 1 == r->rstacksz) {
2187: r->rstacksz += 16;
2188: r->rstack = mandoc_reallocarray(r->rstack,
2189: r->rstacksz, sizeof(int));
1.35 schwarze 2190: }
1.71 schwarze 2191: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2192: }
1.5 schwarze 2193:
2194: /* If the parent has false as its rule, then so do we. */
2195:
1.71 schwarze 2196: if (r->last->parent && !r->last->parent->rule)
2197: r->last->rule = 0;
1.5 schwarze 2198:
2199: /*
1.46 schwarze 2200: * Determine scope.
2201: * If there is nothing on the line after the conditional,
2202: * not even whitespace, use next-line scope.
1.5 schwarze 2203: */
1.2 schwarze 2204:
1.110 schwarze 2205: if (buf->buf[pos] == '\0') {
1.46 schwarze 2206: r->last->endspan = 2;
2207: goto out;
2208: }
2209:
1.110 schwarze 2210: while (buf->buf[pos] == ' ')
1.46 schwarze 2211: pos++;
2212:
2213: /* An opening brace requests multiline scope. */
1.2 schwarze 2214:
1.110 schwarze 2215: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2216: r->last->endspan = -1;
2217: pos += 2;
1.144 schwarze 2218: while (buf->buf[pos] == ' ')
2219: pos++;
1.46 schwarze 2220: goto out;
1.80 schwarze 2221: }
1.2 schwarze 2222:
2223: /*
1.46 schwarze 2224: * Anything else following the conditional causes
2225: * single-line scope. Warn if the scope contains
2226: * nothing but trailing whitespace.
1.2 schwarze 2227: */
2228:
1.110 schwarze 2229: if (buf->buf[pos] == '\0')
1.89 schwarze 2230: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2231: ln, ppos, roff_name[tok]);
1.2 schwarze 2232:
1.46 schwarze 2233: r->last->endspan = 1;
1.1 schwarze 2234:
1.46 schwarze 2235: out:
1.2 schwarze 2236: *offs = pos;
1.149 schwarze 2237: return ROFF_RERUN;
1.1 schwarze 2238: }
2239:
1.2 schwarze 2240: static enum rofferr
1.7 schwarze 2241: roff_ds(ROFF_ARGS)
2242: {
1.85 schwarze 2243: char *string;
2244: const char *name;
2245: size_t namesz;
1.10 schwarze 2246:
1.123 schwarze 2247: /* Ignore groff compatibility mode for now. */
2248:
2249: if (tok == ROFF_ds1)
2250: tok = ROFF_ds;
2251: else if (tok == ROFF_as1)
2252: tok = ROFF_as;
2253:
1.10 schwarze 2254: /*
1.85 schwarze 2255: * The first word is the name of the string.
2256: * If it is empty or terminated by an escape sequence,
2257: * abort the `ds' request without defining anything.
1.10 schwarze 2258: */
1.7 schwarze 2259:
1.110 schwarze 2260: name = string = buf->buf + pos;
2261: if (*name == '\0')
1.149 schwarze 2262: return ROFF_IGN;
1.7 schwarze 2263:
1.85 schwarze 2264: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2265: if (name[namesz] == '\\')
1.149 schwarze 2266: return ROFF_IGN;
1.85 schwarze 2267:
2268: /* Read past the initial double-quote, if any. */
1.110 schwarze 2269: if (*string == '"')
1.7 schwarze 2270: string++;
2271:
1.10 schwarze 2272: /* The rest is the value. */
1.85 schwarze 2273: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2274: ROFF_as == tok);
1.183 schwarze 2275: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2276: return ROFF_IGN;
1.7 schwarze 2277: }
2278:
1.77 schwarze 2279: /*
2280: * Parse a single operator, one or two characters long.
2281: * If the operator is recognized, return success and advance the
2282: * parse point, else return failure and let the parse point unchanged.
2283: */
2284: static int
2285: roff_getop(const char *v, int *pos, char *res)
2286: {
2287:
2288: *res = v[*pos];
2289:
2290: switch (*res) {
1.80 schwarze 2291: case '+':
2292: case '-':
2293: case '*':
2294: case '/':
2295: case '%':
2296: case '&':
2297: case ':':
1.77 schwarze 2298: break;
2299: case '<':
2300: switch (v[*pos + 1]) {
1.80 schwarze 2301: case '=':
1.77 schwarze 2302: *res = 'l';
2303: (*pos)++;
2304: break;
1.80 schwarze 2305: case '>':
1.77 schwarze 2306: *res = '!';
2307: (*pos)++;
2308: break;
1.80 schwarze 2309: case '?':
1.77 schwarze 2310: *res = 'i';
2311: (*pos)++;
2312: break;
2313: default:
2314: break;
2315: }
2316: break;
2317: case '>':
2318: switch (v[*pos + 1]) {
1.80 schwarze 2319: case '=':
1.77 schwarze 2320: *res = 'g';
2321: (*pos)++;
2322: break;
1.80 schwarze 2323: case '?':
1.77 schwarze 2324: *res = 'a';
2325: (*pos)++;
2326: break;
2327: default:
2328: break;
2329: }
2330: break;
2331: case '=':
2332: if ('=' == v[*pos + 1])
2333: (*pos)++;
2334: break;
2335: default:
1.149 schwarze 2336: return 0;
1.77 schwarze 2337: }
2338: (*pos)++;
2339:
1.149 schwarze 2340: return *res;
1.77 schwarze 2341: }
2342:
2343: /*
2344: * Evaluate either a parenthesized numeric expression
2345: * or a single signed integer number.
2346: */
2347: static int
1.106 schwarze 2348: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2349: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2350: {
2351:
2352: if ('(' != v[*pos])
1.149 schwarze 2353: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2354:
2355: (*pos)++;
1.133 schwarze 2356: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2357: return 0;
1.77 schwarze 2358:
1.79 schwarze 2359: /*
2360: * Omission of the closing parenthesis
2361: * is an error in validation mode,
2362: * but ignored in evaluation mode.
2363: */
2364:
1.77 schwarze 2365: if (')' == v[*pos])
2366: (*pos)++;
1.79 schwarze 2367: else if (NULL == res)
1.149 schwarze 2368: return 0;
1.77 schwarze 2369:
1.149 schwarze 2370: return 1;
1.77 schwarze 2371: }
2372:
2373: /*
2374: * Evaluate a complete numeric expression.
2375: * Proceed left to right, there is no concept of precedence.
2376: */
2377: static int
1.106 schwarze 2378: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2379: int *pos, int *res, int flags)
1.77 schwarze 2380: {
2381: int mypos, operand2;
2382: char operator;
2383:
2384: if (NULL == pos) {
2385: mypos = 0;
2386: pos = &mypos;
2387: }
2388:
1.133 schwarze 2389: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2390: while (isspace((unsigned char)v[*pos]))
2391: (*pos)++;
2392:
1.133 schwarze 2393: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2394: return 0;
1.77 schwarze 2395:
2396: while (1) {
1.133 schwarze 2397: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2398: while (isspace((unsigned char)v[*pos]))
2399: (*pos)++;
2400:
2401: if ( ! roff_getop(v, pos, &operator))
2402: break;
2403:
1.133 schwarze 2404: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2405: while (isspace((unsigned char)v[*pos]))
2406: (*pos)++;
2407:
1.133 schwarze 2408: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2409: return 0;
1.77 schwarze 2410:
1.133 schwarze 2411: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2412: while (isspace((unsigned char)v[*pos]))
2413: (*pos)++;
1.79 schwarze 2414:
2415: if (NULL == res)
2416: continue;
1.77 schwarze 2417:
2418: switch (operator) {
1.80 schwarze 2419: case '+':
1.77 schwarze 2420: *res += operand2;
2421: break;
1.80 schwarze 2422: case '-':
1.77 schwarze 2423: *res -= operand2;
2424: break;
1.80 schwarze 2425: case '*':
1.77 schwarze 2426: *res *= operand2;
2427: break;
1.80 schwarze 2428: case '/':
1.116 schwarze 2429: if (operand2 == 0) {
1.106 schwarze 2430: mandoc_msg(MANDOCERR_DIVZERO,
2431: r->parse, ln, *pos, v);
2432: *res = 0;
2433: break;
2434: }
1.77 schwarze 2435: *res /= operand2;
2436: break;
1.80 schwarze 2437: case '%':
1.116 schwarze 2438: if (operand2 == 0) {
2439: mandoc_msg(MANDOCERR_DIVZERO,
2440: r->parse, ln, *pos, v);
2441: *res = 0;
2442: break;
2443: }
1.77 schwarze 2444: *res %= operand2;
2445: break;
1.80 schwarze 2446: case '<':
1.77 schwarze 2447: *res = *res < operand2;
2448: break;
1.80 schwarze 2449: case '>':
1.77 schwarze 2450: *res = *res > operand2;
2451: break;
1.80 schwarze 2452: case 'l':
1.77 schwarze 2453: *res = *res <= operand2;
2454: break;
1.80 schwarze 2455: case 'g':
1.77 schwarze 2456: *res = *res >= operand2;
2457: break;
1.80 schwarze 2458: case '=':
1.77 schwarze 2459: *res = *res == operand2;
2460: break;
1.80 schwarze 2461: case '!':
1.77 schwarze 2462: *res = *res != operand2;
2463: break;
1.80 schwarze 2464: case '&':
1.77 schwarze 2465: *res = *res && operand2;
2466: break;
1.80 schwarze 2467: case ':':
1.77 schwarze 2468: *res = *res || operand2;
2469: break;
1.80 schwarze 2470: case 'i':
1.77 schwarze 2471: if (operand2 < *res)
2472: *res = operand2;
2473: break;
1.80 schwarze 2474: case 'a':
1.77 schwarze 2475: if (operand2 > *res)
2476: *res = operand2;
2477: break;
2478: default:
2479: abort();
2480: }
2481: }
1.149 schwarze 2482: return 1;
1.77 schwarze 2483: }
2484:
1.138 schwarze 2485: /* --- register management ------------------------------------------------ */
2486:
1.52 schwarze 2487: void
1.60 schwarze 2488: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2489: {
1.52 schwarze 2490: struct roffreg *reg;
2491:
2492: /* Search for an existing register with the same name. */
2493: reg = r->regtab;
2494:
2495: while (reg && strcmp(name, reg->key.p))
2496: reg = reg->next;
1.41 schwarze 2497:
1.52 schwarze 2498: if (NULL == reg) {
2499: /* Create a new register. */
2500: reg = mandoc_malloc(sizeof(struct roffreg));
2501: reg->key.p = mandoc_strdup(name);
2502: reg->key.sz = strlen(name);
1.60 schwarze 2503: reg->val = 0;
1.52 schwarze 2504: reg->next = r->regtab;
2505: r->regtab = reg;
2506: }
2507:
1.60 schwarze 2508: if ('+' == sign)
2509: reg->val += val;
2510: else if ('-' == sign)
2511: reg->val -= val;
2512: else
2513: reg->val = val;
1.41 schwarze 2514: }
2515:
1.65 schwarze 2516: /*
2517: * Handle some predefined read-only number registers.
2518: * For now, return -1 if the requested register is not predefined;
2519: * in case a predefined read-only register having the value -1
2520: * were to turn up, another special value would have to be chosen.
2521: */
2522: static int
1.145 schwarze 2523: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2524: {
2525:
2526: switch (*name) {
1.145 schwarze 2527: case '$': /* Number of arguments of the last macro evaluated. */
1.149 schwarze 2528: return r->argc;
1.80 schwarze 2529: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2530: return 0;
1.80 schwarze 2531: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2532: return 1;
1.80 schwarze 2533: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2534: return 24;
1.80 schwarze 2535: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2536: return 0;
1.80 schwarze 2537: case 'T': /* Some output device is always defined. */
1.149 schwarze 2538: return 1;
1.80 schwarze 2539: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2540: return 40;
1.65 schwarze 2541: default:
1.149 schwarze 2542: return -1;
1.65 schwarze 2543: }
2544: }
2545:
1.53 schwarze 2546: int
1.52 schwarze 2547: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2548: {
1.52 schwarze 2549: struct roffreg *reg;
1.65 schwarze 2550: int val;
2551:
2552: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.145 schwarze 2553: val = roff_getregro(r, name + 1);
1.65 schwarze 2554: if (-1 != val)
1.149 schwarze 2555: return val;
1.65 schwarze 2556: }
1.52 schwarze 2557:
2558: for (reg = r->regtab; reg; reg = reg->next)
2559: if (0 == strcmp(name, reg->key.p))
1.149 schwarze 2560: return reg->val;
1.53 schwarze 2561:
1.149 schwarze 2562: return 0;
1.53 schwarze 2563: }
2564:
2565: static int
2566: roff_getregn(const struct roff *r, const char *name, size_t len)
2567: {
2568: struct roffreg *reg;
1.65 schwarze 2569: int val;
2570:
2571: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2572: val = roff_getregro(r, name + 1);
1.65 schwarze 2573: if (-1 != val)
1.149 schwarze 2574: return val;
1.65 schwarze 2575: }
1.53 schwarze 2576:
2577: for (reg = r->regtab; reg; reg = reg->next)
2578: if (len == reg->key.sz &&
2579: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2580: return reg->val;
1.143 schwarze 2581:
1.149 schwarze 2582: return 0;
1.143 schwarze 2583: }
2584:
2585: static int
2586: roff_hasregn(const struct roff *r, const char *name, size_t len)
2587: {
2588: struct roffreg *reg;
2589: int val;
2590:
2591: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2592: val = roff_getregro(r, name + 1);
1.143 schwarze 2593: if (-1 != val)
1.149 schwarze 2594: return 1;
1.143 schwarze 2595: }
2596:
2597: for (reg = r->regtab; reg; reg = reg->next)
2598: if (len == reg->key.sz &&
2599: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2600: return 1;
1.41 schwarze 2601:
1.149 schwarze 2602: return 0;
1.41 schwarze 2603: }
2604:
1.52 schwarze 2605: static void
2606: roff_freereg(struct roffreg *reg)
1.41 schwarze 2607: {
1.52 schwarze 2608: struct roffreg *old_reg;
1.41 schwarze 2609:
1.52 schwarze 2610: while (NULL != reg) {
2611: free(reg->key.p);
2612: old_reg = reg;
2613: reg = reg->next;
2614: free(old_reg);
2615: }
1.41 schwarze 2616: }
1.7 schwarze 2617:
2618: static enum rofferr
1.6 schwarze 2619: roff_nr(ROFF_ARGS)
1.1 schwarze 2620: {
1.85 schwarze 2621: char *key, *val;
2622: size_t keysz;
1.37 schwarze 2623: int iv;
1.60 schwarze 2624: char sign;
1.6 schwarze 2625:
1.110 schwarze 2626: key = val = buf->buf + pos;
2627: if (*key == '\0')
1.149 schwarze 2628: return ROFF_IGN;
1.85 schwarze 2629:
2630: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2631: if (key[keysz] == '\\')
1.149 schwarze 2632: return ROFF_IGN;
1.85 schwarze 2633: key[keysz] = '\0';
1.6 schwarze 2634:
1.60 schwarze 2635: sign = *val;
1.110 schwarze 2636: if (sign == '+' || sign == '-')
1.60 schwarze 2637: val++;
2638:
1.133 schwarze 2639: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2640: roff_setreg(r, key, iv, sign);
1.1 schwarze 2641:
1.149 schwarze 2642: return ROFF_IGN;
1.76 schwarze 2643: }
2644:
2645: static enum rofferr
2646: roff_rr(ROFF_ARGS)
2647: {
2648: struct roffreg *reg, **prev;
1.85 schwarze 2649: char *name, *cp;
2650: size_t namesz;
1.76 schwarze 2651:
1.110 schwarze 2652: name = cp = buf->buf + pos;
2653: if (*name == '\0')
1.149 schwarze 2654: return ROFF_IGN;
1.85 schwarze 2655: namesz = roff_getname(r, &cp, ln, pos);
2656: name[namesz] = '\0';
1.76 schwarze 2657:
2658: prev = &r->regtab;
2659: while (1) {
2660: reg = *prev;
1.110 schwarze 2661: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2662: break;
2663: prev = ®->next;
2664: }
1.110 schwarze 2665: if (reg != NULL) {
1.76 schwarze 2666: *prev = reg->next;
2667: free(reg->key.p);
2668: free(reg);
2669: }
1.149 schwarze 2670: return ROFF_IGN;
1.29 schwarze 2671: }
2672:
1.138 schwarze 2673: /* --- handler functions for roff requests -------------------------------- */
2674:
1.29 schwarze 2675: static enum rofferr
2676: roff_rm(ROFF_ARGS)
2677: {
2678: const char *name;
2679: char *cp;
1.85 schwarze 2680: size_t namesz;
1.29 schwarze 2681:
1.110 schwarze 2682: cp = buf->buf + pos;
2683: while (*cp != '\0') {
1.85 schwarze 2684: name = cp;
1.110 schwarze 2685: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2686: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 2687: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 2688: if (name[namesz] == '\\')
1.85 schwarze 2689: break;
1.29 schwarze 2690: }
1.149 schwarze 2691: return ROFF_IGN;
1.51 schwarze 2692: }
2693:
2694: static enum rofferr
2695: roff_it(ROFF_ARGS)
2696: {
2697: int iv;
2698:
2699: /* Parse the number of lines. */
1.133 schwarze 2700:
2701: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2702: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2703: ln, ppos, buf->buf + 1);
1.149 schwarze 2704: return ROFF_IGN;
1.51 schwarze 2705: }
2706:
1.134 schwarze 2707: while (isspace((unsigned char)buf->buf[pos]))
2708: pos++;
2709:
2710: /*
2711: * Arm the input line trap.
2712: * Special-casing "an-trap" is an ugly workaround to cope
2713: * with DocBook stupidly fiddling with man(7) internals.
2714: */
1.133 schwarze 2715:
1.51 schwarze 2716: roffit_lines = iv;
1.134 schwarze 2717: roffit_macro = mandoc_strdup(iv != 1 ||
2718: strcmp(buf->buf + pos, "an-trap") ?
2719: buf->buf + pos : "br");
1.149 schwarze 2720: return ROFF_IGN;
1.47 schwarze 2721: }
2722:
2723: static enum rofferr
2724: roff_Dd(ROFF_ARGS)
2725: {
2726: const char *const *cp;
2727:
1.99 schwarze 2728: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.47 schwarze 2729: for (cp = __mdoc_reserved; *cp; cp++)
2730: roff_setstr(r, *cp, NULL, 0);
2731:
1.99 schwarze 2732: if (r->format == 0)
2733: r->format = MPARSE_MDOC;
2734:
1.149 schwarze 2735: return ROFF_CONT;
1.47 schwarze 2736: }
2737:
2738: static enum rofferr
2739: roff_TH(ROFF_ARGS)
2740: {
2741: const char *const *cp;
2742:
1.99 schwarze 2743: if ((r->options & MPARSE_QUICK) == 0)
1.47 schwarze 2744: for (cp = __man_reserved; *cp; cp++)
2745: roff_setstr(r, *cp, NULL, 0);
2746:
1.99 schwarze 2747: if (r->format == 0)
2748: r->format = MPARSE_MAN;
2749:
1.149 schwarze 2750: return ROFF_CONT;
1.14 schwarze 2751: }
2752:
2753: static enum rofferr
1.27 schwarze 2754: roff_TE(ROFF_ARGS)
2755: {
2756:
2757: if (NULL == r->tbl)
1.94 schwarze 2758: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2759: ln, ppos, "TE");
1.130 schwarze 2760: else if ( ! tbl_end(&r->tbl)) {
2761: free(buf->buf);
2762: buf->buf = mandoc_strdup(".sp");
2763: buf->sz = 4;
1.149 schwarze 2764: return ROFF_REPARSE;
1.130 schwarze 2765: }
1.149 schwarze 2766: return ROFF_IGN;
1.27 schwarze 2767: }
2768:
2769: static enum rofferr
2770: roff_T_(ROFF_ARGS)
2771: {
2772:
2773: if (NULL == r->tbl)
1.94 schwarze 2774: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2775: ln, ppos, "T&");
1.27 schwarze 2776: else
1.168 schwarze 2777: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 2778:
1.149 schwarze 2779: return ROFF_IGN;
1.27 schwarze 2780: }
2781:
1.102 schwarze 2782: /*
2783: * Handle in-line equation delimiters.
2784: */
2785: static enum rofferr
1.110 schwarze 2786: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2787: {
1.105 schwarze 2788: char *cp1, *cp2;
2789: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2790:
1.102 schwarze 2791: /*
2792: * Outside equations, look for an opening delimiter.
2793: * If we are inside an equation, we already know it is
2794: * in-line, or this function wouldn't have been called;
2795: * so look for a closing delimiter.
2796: */
2797:
1.110 schwarze 2798: cp1 = buf->buf + pos;
1.102 schwarze 2799: cp2 = strchr(cp1, r->eqn == NULL ?
2800: r->last_eqn->odelim : r->last_eqn->cdelim);
2801: if (cp2 == NULL)
1.149 schwarze 2802: return ROFF_CONT;
1.102 schwarze 2803:
1.105 schwarze 2804: *cp2++ = '\0';
2805: bef_pr = bef_nl = aft_nl = aft_pr = "";
2806:
2807: /* Handle preceding text, protecting whitespace. */
2808:
1.110 schwarze 2809: if (*buf->buf != '\0') {
1.105 schwarze 2810: if (r->eqn == NULL)
2811: bef_pr = "\\&";
2812: bef_nl = "\n";
2813: }
2814:
2815: /*
2816: * Prepare replacing the delimiter with an equation macro
2817: * and drop leading white space from the equation.
2818: */
1.102 schwarze 2819:
1.105 schwarze 2820: if (r->eqn == NULL) {
2821: while (*cp2 == ' ')
2822: cp2++;
2823: mac = ".EQ";
2824: } else
2825: mac = ".EN";
2826:
2827: /* Handle following text, protecting whitespace. */
2828:
2829: if (*cp2 != '\0') {
2830: aft_nl = "\n";
2831: if (r->eqn != NULL)
2832: aft_pr = "\\&";
2833: }
2834:
2835: /* Do the actual replacement. */
2836:
1.110 schwarze 2837: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2838: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2839: free(buf->buf);
2840: buf->buf = cp1;
1.102 schwarze 2841:
2842: /* Toggle the in-line state of the eqn subsystem. */
2843:
2844: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2845: return ROFF_REPARSE;
1.41 schwarze 2846: }
2847:
1.107 schwarze 2848: static enum rofferr
2849: roff_EQ(ROFF_ARGS)
1.32 schwarze 2850: {
1.41 schwarze 2851: struct eqn_node *e;
1.32 schwarze 2852:
1.110 schwarze 2853: assert(r->eqn == NULL);
1.107 schwarze 2854: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2855:
1.102 schwarze 2856: if (r->last_eqn) {
1.32 schwarze 2857: r->last_eqn->next = e;
1.102 schwarze 2858: e->delim = r->last_eqn->delim;
2859: e->odelim = r->last_eqn->odelim;
2860: e->cdelim = r->last_eqn->cdelim;
2861: } else
1.32 schwarze 2862: r->first_eqn = r->last_eqn = e;
2863:
2864: r->eqn = r->last_eqn = e;
1.41 schwarze 2865:
1.110 schwarze 2866: if (buf->buf[pos] != '\0')
1.107 schwarze 2867: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2868: ".EQ %s", buf->buf + pos);
1.41 schwarze 2869:
1.149 schwarze 2870: return ROFF_IGN;
1.32 schwarze 2871: }
2872:
2873: static enum rofferr
2874: roff_EN(ROFF_ARGS)
2875: {
2876:
1.94 schwarze 2877: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.149 schwarze 2878: return ROFF_IGN;
1.32 schwarze 2879: }
2880:
2881: static enum rofferr
1.27 schwarze 2882: roff_TS(ROFF_ARGS)
2883: {
1.49 schwarze 2884: struct tbl_node *tbl;
1.27 schwarze 2885:
2886: if (r->tbl) {
1.94 schwarze 2887: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2888: ln, ppos, "TS breaks TS");
1.41 schwarze 2889: tbl_end(&r->tbl);
1.27 schwarze 2890: }
2891:
1.49 schwarze 2892: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2893:
2894: if (r->last_tbl)
1.49 schwarze 2895: r->last_tbl->next = tbl;
1.27 schwarze 2896: else
1.49 schwarze 2897: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2898:
1.49 schwarze 2899: r->tbl = r->last_tbl = tbl;
1.169 schwarze 2900: return ROFF_IGN;
2901: }
2902:
2903: static enum rofferr
2904: roff_onearg(ROFF_ARGS)
2905: {
2906: struct roff_node *n;
2907: char *cp;
1.177 schwarze 2908: int npos;
1.169 schwarze 2909:
1.174 schwarze 2910: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
2911: (tok == ROFF_sp || tok == ROFF_ti))
2912: man_breakscope(r->man, tok);
2913:
1.181 schwarze 2914: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 2915: r->man->last = roffce_node;
2916: r->man->next = ROFF_NEXT_SIBLING;
2917: }
2918:
1.169 schwarze 2919: roff_elem_alloc(r->man, ln, ppos, tok);
2920: n = r->man->last;
2921:
2922: cp = buf->buf + pos;
2923: if (*cp != '\0') {
2924: while (*cp != '\0' && *cp != ' ')
2925: cp++;
2926: while (*cp == ' ')
2927: *cp++ = '\0';
2928: if (*cp != '\0')
2929: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2930: r->parse, ln, cp - buf->buf,
2931: "%s ... %s", roff_name[tok], cp);
2932: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 2933: }
2934:
1.181 schwarze 2935: if (tok == ROFF_ce || tok == ROFF_rj) {
2936: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 2937: roff_word_alloc(r->man, ln, pos, "1");
2938: r->man->last->flags |= NODE_NOSRC;
2939: }
2940: npos = 0;
2941: if (roff_evalnum(r, ln, r->man->last->string, &npos,
2942: &roffce_lines, 0) == 0) {
2943: mandoc_vmsg(MANDOCERR_CE_NONUM,
2944: r->parse, ln, pos, "ce %s", buf->buf + pos);
2945: roffce_lines = 1;
2946: }
2947: if (roffce_lines < 1) {
2948: r->man->last = r->man->last->parent;
2949: roffce_node = NULL;
2950: roffce_lines = 0;
2951: } else
2952: roffce_node = r->man->last->parent;
2953: } else {
2954: n->flags |= NODE_VALID | NODE_ENDED;
2955: r->man->last = n;
2956: }
2957: n->flags |= NODE_LINE;
1.172 schwarze 2958: r->man->next = ROFF_NEXT_SIBLING;
2959: return ROFF_IGN;
2960: }
2961:
2962: static enum rofferr
2963: roff_manyarg(ROFF_ARGS)
2964: {
2965: struct roff_node *n;
2966: char *sp, *ep;
2967:
2968: roff_elem_alloc(r->man, ln, ppos, tok);
2969: n = r->man->last;
2970:
2971: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
2972: while (*ep != '\0' && *ep != ' ')
2973: ep++;
2974: while (*ep == ' ')
2975: *ep++ = '\0';
2976: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 2977: }
2978:
2979: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2980: r->man->last = n;
2981: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 2982: return ROFF_IGN;
1.123 schwarze 2983: }
2984:
2985: static enum rofferr
1.183 schwarze 2986: roff_als(ROFF_ARGS)
2987: {
2988: char *oldn, *newn, *end, *value;
2989: size_t oldsz, newsz, valsz;
2990:
2991: newn = oldn = buf->buf + pos;
2992: if (*newn == '\0')
2993: return ROFF_IGN;
2994:
2995: newsz = roff_getname(r, &oldn, ln, pos);
2996: if (newn[newsz] == '\\' || *oldn == '\0')
2997: return ROFF_IGN;
2998:
2999: end = oldn;
3000: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3001: if (oldsz == 0)
3002: return ROFF_IGN;
3003:
3004: valsz = mandoc_asprintf(&value, ".%.*s \\$*\n", (int)oldsz, oldn);
3005: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3006: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3007: free(value);
3008: return ROFF_IGN;
3009: }
3010:
3011: static enum rofferr
1.168 schwarze 3012: roff_br(ROFF_ARGS)
1.123 schwarze 3013: {
1.174 schwarze 3014: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3015: man_breakscope(r->man, ROFF_br);
1.168 schwarze 3016: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3017: if (buf->buf[pos] != '\0')
3018: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3019: "%s %s", roff_name[tok], buf->buf + pos);
3020: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3021: r->man->next = ROFF_NEXT_SIBLING;
3022: return ROFF_IGN;
1.27 schwarze 3023: }
3024:
3025: static enum rofferr
1.48 schwarze 3026: roff_cc(ROFF_ARGS)
3027: {
3028: const char *p;
3029:
1.110 schwarze 3030: p = buf->buf + pos;
1.48 schwarze 3031:
1.110 schwarze 3032: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3033: r->control = '\0';
1.48 schwarze 3034:
1.110 schwarze 3035: if (*p != '\0')
1.132 schwarze 3036: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3037: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3038:
1.149 schwarze 3039: return ROFF_IGN;
1.48 schwarze 3040: }
3041:
3042: static enum rofferr
1.175 schwarze 3043: roff_ec(ROFF_ARGS)
3044: {
3045: const char *p;
3046:
3047: p = buf->buf + pos;
3048: if (*p == '\0')
3049: r->escape = '\\';
3050: else {
3051: r->escape = *p;
3052: if (*++p != '\0')
3053: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3054: ln, p - buf->buf, "ec ... %s", p);
3055: }
3056: return ROFF_IGN;
3057: }
3058:
3059: static enum rofferr
3060: roff_eo(ROFF_ARGS)
3061: {
3062: r->escape = '\0';
3063: if (buf->buf[pos] != '\0')
3064: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3065: ln, pos, "eo %s", buf->buf + pos);
3066: return ROFF_IGN;
3067: }
3068:
3069: static enum rofferr
1.42 schwarze 3070: roff_tr(ROFF_ARGS)
3071: {
3072: const char *p, *first, *second;
3073: size_t fsz, ssz;
3074: enum mandoc_esc esc;
3075:
1.110 schwarze 3076: p = buf->buf + pos;
1.42 schwarze 3077:
1.110 schwarze 3078: if (*p == '\0') {
1.132 schwarze 3079: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 3080: return ROFF_IGN;
1.42 schwarze 3081: }
3082:
1.110 schwarze 3083: while (*p != '\0') {
1.42 schwarze 3084: fsz = ssz = 1;
3085:
3086: first = p++;
1.110 schwarze 3087: if (*first == '\\') {
1.42 schwarze 3088: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3089: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3090: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3091: ln, (int)(p - buf->buf), first);
1.149 schwarze 3092: return ROFF_IGN;
1.42 schwarze 3093: }
3094: fsz = (size_t)(p - first);
3095: }
3096:
3097: second = p++;
1.110 schwarze 3098: if (*second == '\\') {
1.42 schwarze 3099: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3100: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3101: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3102: ln, (int)(p - buf->buf), second);
1.149 schwarze 3103: return ROFF_IGN;
1.42 schwarze 3104: }
3105: ssz = (size_t)(p - second);
1.110 schwarze 3106: } else if (*second == '\0') {
1.132 schwarze 3107: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3108: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3109: second = " ";
3110: p--;
3111: }
3112:
3113: if (fsz > 1) {
1.80 schwarze 3114: roff_setstrn(&r->xmbtab, first, fsz,
3115: second, ssz, 0);
1.42 schwarze 3116: continue;
3117: }
3118:
1.110 schwarze 3119: if (r->xtab == NULL)
1.80 schwarze 3120: r->xtab = mandoc_calloc(128,
3121: sizeof(struct roffstr));
1.42 schwarze 3122:
3123: free(r->xtab[(int)*first].p);
3124: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3125: r->xtab[(int)*first].sz = ssz;
3126: }
3127:
1.149 schwarze 3128: return ROFF_IGN;
1.42 schwarze 3129: }
3130:
3131: static enum rofferr
1.178 schwarze 3132: roff_rn(ROFF_ARGS)
3133: {
3134: const char *value;
3135: char *oldn, *newn, *end;
3136: size_t oldsz, newsz;
3137:
3138: oldn = newn = buf->buf + pos;
3139: if (*oldn == '\0')
3140: return ROFF_IGN;
3141:
3142: oldsz = roff_getname(r, &newn, ln, pos);
3143: if (oldn[oldsz] == '\\' || *newn == '\0')
3144: return ROFF_IGN;
3145:
3146: end = newn;
3147: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3148: if (newsz == 0)
3149: return ROFF_IGN;
3150:
3151: /*
3152: * Rename a user-defined macro bearing the old name,
3153: * overriding an existing renamed high-level macro
3154: * bearing the new name, if that exists.
3155: */
3156:
3157: if ((value = roff_getstrn(r, oldn, oldsz)) != NULL) {
3158: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3159: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3160: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3161: return ROFF_IGN;
3162: }
3163:
3164: /*
3165: * Rename a high-level macro bearing the old name,
3166: * either renaming it a second time if it was already
3167: * renamed before, or renaming it for the first time.
3168: * In both cases, override an existing user-defined
3169: * macro bearing the new name, if that exists.
3170: */
3171:
3172: if ((value = roff_getrenn(r, oldn, oldsz)) != NULL) {
3173: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3174: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
3175: } else
3176: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
3177: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3178: return ROFF_IGN;
3179: }
3180:
3181: static enum rofferr
1.14 schwarze 3182: roff_so(ROFF_ARGS)
3183: {
1.121 schwarze 3184: char *name, *cp;
1.15 schwarze 3185:
1.110 schwarze 3186: name = buf->buf + pos;
1.97 schwarze 3187: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3188:
1.22 schwarze 3189: /*
3190: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3191: * opening anything that's not in our cwd or anything beneath
3192: * it. Thus, explicitly disallow traversing up the file-system
3193: * or using absolute paths.
3194: */
3195:
1.110 schwarze 3196: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3197: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3198: ".so %s", name);
1.121 schwarze 3199: buf->sz = mandoc_asprintf(&cp,
3200: ".sp\nSee the file %s.\n.sp", name) + 1;
3201: free(buf->buf);
3202: buf->buf = cp;
3203: *offs = 0;
1.149 schwarze 3204: return ROFF_REPARSE;
1.14 schwarze 3205: }
3206:
3207: *offs = pos;
1.149 schwarze 3208: return ROFF_SO;
1.7 schwarze 3209: }
3210:
1.138 schwarze 3211: /* --- user defined strings and macros ------------------------------------ */
3212:
1.16 schwarze 3213: static enum rofferr
3214: roff_userdef(ROFF_ARGS)
1.12 schwarze 3215: {
1.183 schwarze 3216: const char *arg[16], *ap;
1.16 schwarze 3217: char *cp, *n1, *n2;
1.164 schwarze 3218: int expand_count, i, ib, ie;
1.135 schwarze 3219: size_t asz, rsz;
1.12 schwarze 3220:
1.16 schwarze 3221: /*
3222: * Collect pointers to macro argument strings
1.61 schwarze 3223: * and NUL-terminate them.
1.16 schwarze 3224: */
1.135 schwarze 3225:
1.145 schwarze 3226: r->argc = 0;
1.110 schwarze 3227: cp = buf->buf + pos;
1.183 schwarze 3228: for (i = 0; i < 16; i++) {
1.145 schwarze 3229: if (*cp == '\0')
3230: arg[i] = "";
3231: else {
3232: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3233: r->argc = i + 1;
3234: }
3235: }
1.16 schwarze 3236:
3237: /*
3238: * Expand macro arguments.
1.12 schwarze 3239: */
1.135 schwarze 3240:
3241: buf->sz = strlen(r->current_string) + 1;
1.164 schwarze 3242: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.135 schwarze 3243: memcpy(n1, r->current_string, buf->sz);
1.164 schwarze 3244: expand_count = 0;
1.135 schwarze 3245: while (*cp != '\0') {
3246:
3247: /* Scan ahead for the next argument invocation. */
3248:
3249: if (*cp++ != '\\')
3250: continue;
3251: if (*cp++ != '$')
3252: continue;
1.146 schwarze 3253: if (*cp == '*') { /* \\$* inserts all arguments */
3254: ib = 0;
3255: ie = r->argc - 1;
3256: } else { /* \\$1 .. \\$9 insert one argument */
3257: ib = ie = *cp - '1';
3258: if (ib < 0 || ib > 8)
3259: continue;
3260: }
1.135 schwarze 3261: cp -= 2;
1.164 schwarze 3262:
3263: /*
3264: * Prevent infinite recursion.
3265: */
3266:
3267: if (cp >= n2)
3268: expand_count = 1;
3269: else if (++expand_count > EXPAND_LIMIT) {
3270: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3271: ln, (int)(cp - n1), NULL);
1.165 schwarze 3272: free(buf->buf);
3273: buf->buf = n1;
1.164 schwarze 3274: return ROFF_IGN;
3275: }
1.135 schwarze 3276:
3277: /*
3278: * Determine the size of the expanded argument,
3279: * taking escaping of quotes into account.
3280: */
3281:
1.146 schwarze 3282: asz = ie > ib ? ie - ib : 0; /* for blanks */
3283: for (i = ib; i <= ie; i++) {
3284: for (ap = arg[i]; *ap != '\0'; ap++) {
3285: asz++;
3286: if (*ap == '"')
3287: asz += 3;
3288: }
1.135 schwarze 3289: }
3290: if (asz != 3) {
3291:
3292: /*
3293: * Determine the size of the rest of the
3294: * unexpanded macro, including the NUL.
3295: */
3296:
3297: rsz = buf->sz - (cp - n1) - 3;
3298:
3299: /*
3300: * When shrinking, move before
3301: * releasing the storage.
3302: */
3303:
3304: if (asz < 3)
3305: memmove(cp + asz, cp + 3, rsz);
3306:
3307: /*
3308: * Resize the storage for the macro
3309: * and readjust the parse pointer.
3310: */
3311:
3312: buf->sz += asz - 3;
3313: n2 = mandoc_realloc(n1, buf->sz);
3314: cp = n2 + (cp - n1);
3315: n1 = n2;
3316:
3317: /*
3318: * When growing, make room
3319: * for the expanded argument.
3320: */
3321:
3322: if (asz > 3)
3323: memmove(cp + asz, cp + 3, rsz);
3324: }
3325:
3326: /* Copy the expanded argument, escaping quotes. */
3327:
3328: n2 = cp;
1.146 schwarze 3329: for (i = ib; i <= ie; i++) {
3330: for (ap = arg[i]; *ap != '\0'; ap++) {
3331: if (*ap == '"') {
3332: memcpy(n2, "\\(dq", 4);
3333: n2 += 4;
3334: } else
3335: *n2++ = *ap;
3336: }
3337: if (i < ie)
3338: *n2++ = ' ';
1.16 schwarze 3339: }
1.12 schwarze 3340: }
3341:
1.16 schwarze 3342: /*
3343: * Replace the macro invocation
3344: * by the expanded macro.
3345: */
1.135 schwarze 3346:
1.110 schwarze 3347: free(buf->buf);
3348: buf->buf = n1;
1.120 schwarze 3349: *offs = 0;
1.16 schwarze 3350:
1.149 schwarze 3351: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3352: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3353: }
1.28 schwarze 3354:
1.178 schwarze 3355: /*
3356: * Calling a high-level macro that was renamed with .rn.
3357: * r->current_string has already been set up by roff_parse().
3358: */
3359: static enum rofferr
3360: roff_renamed(ROFF_ARGS)
3361: {
3362: char *nbuf;
3363:
3364: buf->sz = mandoc_asprintf(&nbuf, ".%s %s", r->current_string,
3365: buf->buf + pos) + 1;
3366: free(buf->buf);
3367: buf->buf = nbuf;
3368: return ROFF_CONT;
3369: }
3370:
1.85 schwarze 3371: static size_t
1.28 schwarze 3372: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3373: {
3374: char *name, *cp;
1.85 schwarze 3375: size_t namesz;
1.28 schwarze 3376:
3377: name = *cpp;
3378: if ('\0' == *name)
1.149 schwarze 3379: return 0;
1.28 schwarze 3380:
1.85 schwarze 3381: /* Read until end of name and terminate it with NUL. */
3382: for (cp = name; 1; cp++) {
3383: if ('\0' == *cp || ' ' == *cp) {
3384: namesz = cp - name;
3385: break;
3386: }
1.28 schwarze 3387: if ('\\' != *cp)
3388: continue;
1.88 schwarze 3389: namesz = cp - name;
3390: if ('{' == cp[1] || '}' == cp[1])
3391: break;
1.28 schwarze 3392: cp++;
3393: if ('\\' == *cp)
3394: continue;
1.97 schwarze 3395: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3396: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3397: mandoc_escape((const char **)&cp, NULL, NULL);
3398: break;
1.28 schwarze 3399: }
3400:
3401: /* Read past spaces. */
3402: while (' ' == *cp)
3403: cp++;
3404:
3405: *cpp = cp;
1.149 schwarze 3406: return namesz;
1.28 schwarze 3407: }
3408:
1.16 schwarze 3409: /*
3410: * Store *string into the user-defined string called *name.
3411: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3412: * append == 0: replace mode
3413: * append == 1: single-line append mode
3414: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3415: */
1.8 schwarze 3416: static void
1.16 schwarze 3417: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3418: int append)
1.7 schwarze 3419: {
1.42 schwarze 3420:
3421: roff_setstrn(&r->strtab, name, strlen(name), string,
1.80 schwarze 3422: string ? strlen(string) : 0, append);
1.42 schwarze 3423: }
3424:
3425: static void
3426: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3427: const char *string, size_t stringsz, int append)
1.42 schwarze 3428: {
3429: struct roffkv *n;
3430: char *c;
3431: int i;
3432: size_t oldch, newch;
1.7 schwarze 3433:
1.16 schwarze 3434: /* Search for an existing string with the same name. */
1.42 schwarze 3435: n = *r;
3436:
1.84 schwarze 3437: while (n && (namesz != n->key.sz ||
3438: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3439: n = n->next;
1.8 schwarze 3440:
3441: if (NULL == n) {
1.16 schwarze 3442: /* Create a new string table entry. */
1.42 schwarze 3443: n = mandoc_malloc(sizeof(struct roffkv));
3444: n->key.p = mandoc_strndup(name, namesz);
3445: n->key.sz = namesz;
3446: n->val.p = NULL;
3447: n->val.sz = 0;
3448: n->next = *r;
3449: *r = n;
1.66 schwarze 3450: } else if (0 == append) {
1.42 schwarze 3451: free(n->val.p);
3452: n->val.p = NULL;
3453: n->val.sz = 0;
1.16 schwarze 3454: }
3455:
3456: if (NULL == string)
3457: return;
3458:
3459: /*
3460: * One additional byte for the '\n' in multiline mode,
3461: * and one for the terminating '\0'.
3462: */
1.66 schwarze 3463: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3464:
3465: if (NULL == n->val.p) {
3466: n->val.p = mandoc_malloc(newch);
3467: *n->val.p = '\0';
1.16 schwarze 3468: oldch = 0;
3469: } else {
1.42 schwarze 3470: oldch = n->val.sz;
3471: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3472: }
3473:
3474: /* Skip existing content in the destination buffer. */
1.42 schwarze 3475: c = n->val.p + (int)oldch;
1.16 schwarze 3476:
3477: /* Append new content to the destination buffer. */
1.42 schwarze 3478: i = 0;
3479: while (i < (int)stringsz) {
1.16 schwarze 3480: /*
3481: * Rudimentary roff copy mode:
3482: * Handle escaped backslashes.
3483: */
1.42 schwarze 3484: if ('\\' == string[i] && '\\' == string[i + 1])
3485: i++;
3486: *c++ = string[i++];
1.16 schwarze 3487: }
1.8 schwarze 3488:
1.16 schwarze 3489: /* Append terminating bytes. */
1.66 schwarze 3490: if (1 < append)
1.16 schwarze 3491: *c++ = '\n';
1.42 schwarze 3492:
1.16 schwarze 3493: *c = '\0';
1.42 schwarze 3494: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3495: }
3496:
1.8 schwarze 3497: static const char *
3498: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.7 schwarze 3499: {
1.42 schwarze 3500: const struct roffkv *n;
1.64 schwarze 3501: int i;
1.7 schwarze 3502:
1.42 schwarze 3503: for (n = r->strtab; n; n = n->next)
1.80 schwarze 3504: if (0 == strncmp(name, n->key.p, len) &&
3505: '\0' == n->key.p[(int)len])
1.149 schwarze 3506: return n->val.p;
1.64 schwarze 3507:
3508: for (i = 0; i < PREDEFS_MAX; i++)
3509: if (0 == strncmp(name, predefs[i].name, len) &&
3510: '\0' == predefs[i].name[(int)len])
1.149 schwarze 3511: return predefs[i].str;
1.178 schwarze 3512:
3513: return NULL;
3514: }
3515:
3516: /*
3517: * Check whether *name is the renamed name of a high-level macro.
3518: * Return the standard name, or NULL if it is not.
3519: */
3520: static const char *
3521: roff_getrenn(const struct roff *r, const char *name, size_t len)
3522: {
3523: const struct roffkv *n;
3524:
3525: for (n = r->rentab; n; n = n->next)
3526: if (0 == strncmp(name, n->key.p, len) &&
3527: '\0' == n->key.p[(int)len])
3528: return n->val.p;
1.8 schwarze 3529:
1.149 schwarze 3530: return NULL;
1.7 schwarze 3531: }
3532:
1.8 schwarze 3533: static void
1.42 schwarze 3534: roff_freestr(struct roffkv *r)
1.7 schwarze 3535: {
1.42 schwarze 3536: struct roffkv *n, *nn;
1.7 schwarze 3537:
1.42 schwarze 3538: for (n = r; n; n = nn) {
3539: free(n->key.p);
3540: free(n->val.p);
1.7 schwarze 3541: nn = n->next;
3542: free(n);
3543: }
1.27 schwarze 3544: }
1.138 schwarze 3545:
3546: /* --- accessors and utility functions ------------------------------------ */
1.27 schwarze 3547:
3548: const struct tbl_span *
3549: roff_span(const struct roff *r)
3550: {
1.80 schwarze 3551:
1.149 schwarze 3552: return r->tbl ? tbl_span(r->tbl) : NULL;
1.32 schwarze 3553: }
3554:
3555: const struct eqn *
3556: roff_eqn(const struct roff *r)
3557: {
1.80 schwarze 3558:
1.149 schwarze 3559: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.42 schwarze 3560: }
3561:
3562: /*
3563: * Duplicate an input string, making the appropriate character
3564: * conversations (as stipulated by `tr') along the way.
3565: * Returns a heap-allocated string with all the replacements made.
3566: */
3567: char *
3568: roff_strdup(const struct roff *r, const char *p)
3569: {
3570: const struct roffkv *cp;
3571: char *res;
3572: const char *pp;
3573: size_t ssz, sz;
3574: enum mandoc_esc esc;
3575:
3576: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3577: return mandoc_strdup(p);
1.42 schwarze 3578: else if ('\0' == *p)
1.149 schwarze 3579: return mandoc_strdup("");
1.42 schwarze 3580:
3581: /*
3582: * Step through each character looking for term matches
3583: * (remember that a `tr' can be invoked with an escape, which is
3584: * a glyph but the escape is multi-character).
3585: * We only do this if the character hash has been initialised
3586: * and the string is >0 length.
3587: */
3588:
3589: res = NULL;
3590: ssz = 0;
3591:
3592: while ('\0' != *p) {
1.161 schwarze 3593: assert((unsigned int)*p < 128);
3594: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3595: sz = r->xtab[(int)*p].sz;
3596: res = mandoc_realloc(res, ssz + sz + 1);
3597: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3598: ssz += sz;
3599: p++;
3600: continue;
3601: } else if ('\\' != *p) {
3602: res = mandoc_realloc(res, ssz + 2);
3603: res[ssz++] = *p++;
3604: continue;
3605: }
3606:
3607: /* Search for term matches. */
3608: for (cp = r->xmbtab; cp; cp = cp->next)
3609: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3610: break;
3611:
3612: if (NULL != cp) {
3613: /*
3614: * A match has been found.
3615: * Append the match to the array and move
3616: * forward by its keysize.
3617: */
1.80 schwarze 3618: res = mandoc_realloc(res,
3619: ssz + cp->val.sz + 1);
1.42 schwarze 3620: memcpy(res + ssz, cp->val.p, cp->val.sz);
3621: ssz += cp->val.sz;
3622: p += (int)cp->key.sz;
3623: continue;
3624: }
3625:
3626: /*
3627: * Handle escapes carefully: we need to copy
3628: * over just the escape itself, or else we might
3629: * do replacements within the escape itself.
3630: * Make sure to pass along the bogus string.
3631: */
3632: pp = p++;
3633: esc = mandoc_escape(&p, NULL, NULL);
3634: if (ESCAPE_ERROR == esc) {
3635: sz = strlen(pp);
3636: res = mandoc_realloc(res, ssz + sz + 1);
3637: memcpy(res + ssz, pp, sz);
3638: break;
3639: }
1.80 schwarze 3640: /*
3641: * We bail out on bad escapes.
1.42 schwarze 3642: * No need to warn: we already did so when
3643: * roff_res() was called.
3644: */
3645: sz = (int)(p - pp);
3646: res = mandoc_realloc(res, ssz + sz + 1);
3647: memcpy(res + ssz, pp, sz);
3648: ssz += sz;
3649: }
3650:
3651: res[(int)ssz] = '\0';
1.149 schwarze 3652: return res;
1.99 schwarze 3653: }
3654:
3655: int
3656: roff_getformat(const struct roff *r)
3657: {
3658:
1.149 schwarze 3659: return r->format;
1.48 schwarze 3660: }
3661:
3662: /*
1.80 schwarze 3663: * Find out whether a line is a macro line or not.
1.48 schwarze 3664: * If it is, adjust the current position and return one; if it isn't,
3665: * return zero and don't change the current position.
3666: * If the control character has been set with `.cc', then let that grain
3667: * precedence.
3668: * This is slighly contrary to groff, where using the non-breaking
3669: * control character when `cc' has been invoked will cause the
3670: * non-breaking macro contents to be printed verbatim.
3671: */
3672: int
3673: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3674: {
3675: int pos;
3676:
3677: pos = *ppos;
3678:
1.175 schwarze 3679: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 3680: pos++;
1.175 schwarze 3681: else if (r->control != '\0')
1.149 schwarze 3682: return 0;
1.48 schwarze 3683: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3684: pos += 2;
3685: else if ('.' == cp[pos] || '\'' == cp[pos])
3686: pos++;
3687: else
1.149 schwarze 3688: return 0;
1.48 schwarze 3689:
3690: while (' ' == cp[pos] || '\t' == cp[pos])
3691: pos++;
3692:
3693: *ppos = pos;
1.149 schwarze 3694: return 1;
1.1 schwarze 3695: }
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