Annotation of src/usr.bin/mandoc/roff.c, Revision 1.179
1.179 ! schwarze 1: /* $OpenBSD: roff.c,v 1.178 2017/06/07 00:50:30 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);
1.2 schwarze 147: static enum rofferr roff_block(ROFF_ARGS);
148: static enum rofferr roff_block_text(ROFF_ARGS);
149: static enum rofferr roff_block_sub(ROFF_ARGS);
1.168 schwarze 150: static enum rofferr roff_br(ROFF_ARGS);
1.2 schwarze 151: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 152: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 153: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 154: static enum rofferr roff_cond(ROFF_ARGS);
155: static enum rofferr roff_cond_text(ROFF_ARGS);
156: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 157: static enum rofferr roff_ds(ROFF_ARGS);
1.175 schwarze 158: static enum rofferr roff_ec(ROFF_ARGS);
159: static enum rofferr roff_eo(ROFF_ARGS);
1.110 schwarze 160: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 161: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 162: static int roff_evalnum(struct roff *, int,
163: const char *, int *, int *, int);
164: static int roff_evalpar(struct roff *, int,
1.133 schwarze 165: const char *, int *, int *, int);
1.71 schwarze 166: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 167: static void roff_free1(struct roff *);
1.52 schwarze 168: static void roff_freereg(struct roffreg *);
1.42 schwarze 169: static void roff_freestr(struct roffkv *);
1.85 schwarze 170: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 171: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 172: static int roff_getop(const char *, int *, char *);
1.53 schwarze 173: static int roff_getregn(const struct roff *,
174: const char *, size_t);
1.145 schwarze 175: static int roff_getregro(const struct roff *,
176: const char *name);
1.178 schwarze 177: static const char *roff_getrenn(const struct roff *,
178: const char *, size_t);
1.80 schwarze 179: static const char *roff_getstrn(const struct roff *,
1.8 schwarze 180: const char *, size_t);
1.143 schwarze 181: static int roff_hasregn(const struct roff *,
182: const char *, size_t);
1.123 schwarze 183: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 184: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 185: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 186: static void roff_man_alloc1(struct roff_man *);
187: static void roff_man_free1(struct roff_man *);
1.172 schwarze 188: static enum rofferr roff_manyarg(ROFF_ARGS);
1.6 schwarze 189: static enum rofferr roff_nr(ROFF_ARGS);
1.169 schwarze 190: static enum rofferr roff_onearg(ROFF_ARGS);
1.166 schwarze 191: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 192: int, int);
1.177 schwarze 193: static enum rofferr roff_parsetext(struct roff *, struct buf *,
194: int, int *);
1.178 schwarze 195: static enum rofferr roff_renamed(ROFF_ARGS);
1.110 schwarze 196: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 197: static enum rofferr roff_rm(ROFF_ARGS);
1.178 schwarze 198: static enum rofferr roff_rn(ROFF_ARGS);
1.76 schwarze 199: static enum rofferr roff_rr(ROFF_ARGS);
1.8 schwarze 200: static void roff_setstr(struct roff *,
1.16 schwarze 201: const char *, const char *, int);
1.80 schwarze 202: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 203: size_t, const char *, size_t, int);
1.14 schwarze 204: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 205: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 206: static enum rofferr roff_Dd(ROFF_ARGS);
207: static enum rofferr roff_TH(ROFF_ARGS);
1.27 schwarze 208: static enum rofferr roff_TE(ROFF_ARGS);
209: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 210: static enum rofferr roff_EQ(ROFF_ARGS);
211: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 212: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 213: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 214: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 215:
1.138 schwarze 216: /* --- constant data ------------------------------------------------------ */
217:
1.133 schwarze 218: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
219: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
220:
1.166 schwarze 221: const char *__roff_name[MAN_MAX + 1] = {
1.177 schwarze 222: "br", "ce", "ft", "ll",
223: "mc", "sp", "ta", "ti",
224: NULL,
1.166 schwarze 225: "ab", "ad", "af", "aln",
226: "als", "am", "am1", "ami",
227: "ami1", "as", "as1", "asciify",
228: "backtrace", "bd", "bleedat", "blm",
229: "box", "boxa", "bp", "BP",
230: "break", "breakchar", "brnl", "brp",
1.177 schwarze 231: "brpnl", "c2", "cc",
1.166 schwarze 232: "cf", "cflags", "ch", "char",
233: "chop", "class", "close", "CL",
234: "color", "composite", "continue", "cp",
235: "cropat", "cs", "cu", "da",
236: "dch", "Dd", "de", "de1",
237: "defcolor", "dei", "dei1", "device",
238: "devicem", "di", "do", "ds",
239: "ds1", "dwh", "dt", "ec",
240: "ecr", "ecs", "el", "em",
241: "EN", "eo", "EP", "EQ",
242: "errprint", "ev", "evc", "ex",
243: "fallback", "fam", "fc", "fchar",
244: "fcolor", "fdeferlig", "feature", "fkern",
245: "fl", "flig", "fp", "fps",
246: "fschar", "fspacewidth", "fspecial", "ftr",
247: "fzoom", "gcolor", "hc", "hcode",
248: "hidechar", "hla", "hlm", "hpf",
249: "hpfa", "hpfcode", "hw", "hy",
250: "hylang", "hylen", "hym", "hypp",
251: "hys", "ie", "if", "ig",
252: "index", "it", "itc", "IX",
253: "kern", "kernafter", "kernbefore", "kernpair",
254: "lc", "lc_ctype", "lds", "length",
255: "letadj", "lf", "lg", "lhang",
256: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 257: "ls", "lsm", "lt",
1.166 schwarze 258: "mediasize", "minss", "mk", "mso",
259: "na", "ne", "nh", "nhychar",
260: "nm", "nn", "nop", "nr",
261: "nrf", "nroff", "ns", "nx",
262: "open", "opena", "os", "output",
263: "padj", "papersize", "pc", "pev",
264: "pi", "PI", "pl", "pm",
265: "pn", "pnr", "po", "ps",
266: "psbb", "pshape", "pso", "ptr",
267: "pvs", "rchar", "rd", "recursionlimit",
268: "return", "rfschar", "rhang", "rj",
269: "rm", "rn", "rnn", "rr",
270: "rs", "rt", "schar", "sentchar",
271: "shc", "shift", "sizes", "so",
272: "spacewidth", "special", "spreadwarn", "ss",
273: "sty", "substring", "sv", "sy",
1.172 schwarze 274: "T&", "tc", "TE",
1.173 schwarze 275: "TH", "tkf", "tl",
1.166 schwarze 276: "tm", "tm1", "tmc", "tr",
277: "track", "transchar", "trf", "trimat",
278: "trin", "trnt", "troff", "TS",
279: "uf", "ul", "unformat", "unwatch",
280: "unwatchn", "vpt", "vs", "warn",
281: "warnscale", "watch", "watchlength", "watchn",
282: "wh", "while", "write", "writec",
283: "writem", "xflag", ".", NULL,
1.178 schwarze 284: NULL, "text",
1.166 schwarze 285: "Dd", "Dt", "Os", "Sh",
286: "Ss", "Pp", "D1", "Dl",
287: "Bd", "Ed", "Bl", "El",
288: "It", "Ad", "An", "Ap",
289: "Ar", "Cd", "Cm", "Dv",
290: "Er", "Ev", "Ex", "Fa",
291: "Fd", "Fl", "Fn", "Ft",
292: "Ic", "In", "Li", "Nd",
293: "Nm", "Op", "Ot", "Pa",
294: "Rv", "St", "Va", "Vt",
295: "Xr", "%A", "%B", "%D",
296: "%I", "%J", "%N", "%O",
297: "%P", "%R", "%T", "%V",
298: "Ac", "Ao", "Aq", "At",
299: "Bc", "Bf", "Bo", "Bq",
300: "Bsx", "Bx", "Db", "Dc",
301: "Do", "Dq", "Ec", "Ef",
302: "Em", "Eo", "Fx", "Ms",
303: "No", "Ns", "Nx", "Ox",
304: "Pc", "Pf", "Po", "Pq",
305: "Qc", "Ql", "Qo", "Qq",
306: "Re", "Rs", "Sc", "So",
307: "Sq", "Sm", "Sx", "Sy",
308: "Tn", "Ux", "Xc", "Xo",
309: "Fo", "Fc", "Oo", "Oc",
310: "Bk", "Ek", "Bt", "Hf",
311: "Fr", "Ud", "Lb", "Lp",
312: "Lk", "Mt", "Brq", "Bro",
313: "Brc", "%C", "Es", "En",
1.171 schwarze 314: "Dx", "%Q", "%U", "Ta",
315: NULL,
1.166 schwarze 316: "TH", "SH", "SS", "TP",
317: "LP", "PP", "P", "IP",
318: "HP", "SM", "SB", "BI",
319: "IB", "BR", "RB", "R",
320: "B", "I", "IR", "RI",
1.171 schwarze 321: "nf", "fi",
1.166 schwarze 322: "RE", "RS", "DT", "UC",
1.169 schwarze 323: "PD", "AT", "in",
1.166 schwarze 324: "OP", "EX", "EE", "UR",
1.170 schwarze 325: "UE", NULL
1.166 schwarze 326: };
327: const char *const *roff_name = __roff_name;
328:
329: static struct roffmac roffs[TOKEN_NONE] = {
1.168 schwarze 330: { roff_br, NULL, NULL, 0 }, /* br */
1.177 schwarze 331: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.169 schwarze 332: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 333: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 334: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.171 schwarze 335: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 336: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 337: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 338: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 339: { roff_unsupp, NULL, NULL, 0 }, /* ab */
340: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
341: { roff_line_ignore, NULL, NULL, 0 }, /* af */
342: { roff_unsupp, NULL, NULL, 0 }, /* aln */
343: { roff_unsupp, NULL, NULL, 0 }, /* als */
344: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
345: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
346: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
347: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
348: { roff_ds, NULL, NULL, 0 }, /* as */
349: { roff_ds, NULL, NULL, 0 }, /* as1 */
350: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
351: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
352: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
353: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
354: { roff_unsupp, NULL, NULL, 0 }, /* blm */
355: { roff_unsupp, NULL, NULL, 0 }, /* box */
356: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
357: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
358: { roff_unsupp, NULL, NULL, 0 }, /* BP */
359: { roff_unsupp, NULL, NULL, 0 }, /* break */
360: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
361: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 schwarze 362: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 363: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
364: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
365: { roff_cc, NULL, NULL, 0 }, /* cc */
366: { roff_insec, NULL, NULL, 0 }, /* cf */
367: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
368: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
369: { roff_unsupp, NULL, NULL, 0 }, /* char */
370: { roff_unsupp, NULL, NULL, 0 }, /* chop */
371: { roff_line_ignore, NULL, NULL, 0 }, /* class */
372: { roff_insec, NULL, NULL, 0 }, /* close */
373: { roff_unsupp, NULL, NULL, 0 }, /* CL */
374: { roff_line_ignore, NULL, NULL, 0 }, /* color */
375: { roff_unsupp, NULL, NULL, 0 }, /* composite */
376: { roff_unsupp, NULL, NULL, 0 }, /* continue */
377: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
378: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
379: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
380: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
381: { roff_unsupp, NULL, NULL, 0 }, /* da */
382: { roff_unsupp, NULL, NULL, 0 }, /* dch */
383: { roff_Dd, NULL, NULL, 0 }, /* Dd */
384: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
385: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
386: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
387: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
388: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
389: { roff_unsupp, NULL, NULL, 0 }, /* device */
390: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
391: { roff_unsupp, NULL, NULL, 0 }, /* di */
392: { roff_unsupp, NULL, NULL, 0 }, /* do */
393: { roff_ds, NULL, NULL, 0 }, /* ds */
394: { roff_ds, NULL, NULL, 0 }, /* ds1 */
395: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
396: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 397: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 398: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
399: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
400: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
401: { roff_unsupp, NULL, NULL, 0 }, /* em */
402: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 403: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 404: { roff_unsupp, NULL, NULL, 0 }, /* EP */
405: { roff_EQ, NULL, NULL, 0 }, /* EQ */
406: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
407: { roff_unsupp, NULL, NULL, 0 }, /* ev */
408: { roff_unsupp, NULL, NULL, 0 }, /* evc */
409: { roff_unsupp, NULL, NULL, 0 }, /* ex */
410: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
411: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
412: { roff_unsupp, NULL, NULL, 0 }, /* fc */
413: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
414: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
415: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
416: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
417: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
418: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
419: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
420: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
421: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
422: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
423: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
424: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
425: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
426: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
427: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
428: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
429: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
430: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
431: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
432: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
433: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
434: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
435: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
436: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
437: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
438: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
439: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
440: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
441: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
442: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
443: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
444: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
445: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
446: { roff_unsupp, NULL, NULL, 0 }, /* index */
447: { roff_it, NULL, NULL, 0 }, /* it */
448: { roff_unsupp, NULL, NULL, 0 }, /* itc */
449: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
450: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
451: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
452: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
453: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
454: { roff_unsupp, NULL, NULL, 0 }, /* lc */
455: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
456: { roff_unsupp, NULL, NULL, 0 }, /* lds */
457: { roff_unsupp, NULL, NULL, 0 }, /* length */
458: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
459: { roff_insec, NULL, NULL, 0 }, /* lf */
460: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
461: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
462: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
463: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
464: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
465: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
466: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
467: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
468: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
469: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
470: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
471: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
472: { roff_insec, NULL, NULL, 0 }, /* mso */
473: { roff_line_ignore, NULL, NULL, 0 }, /* na */
474: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
475: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
476: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
477: { roff_unsupp, NULL, NULL, 0 }, /* nm */
478: { roff_unsupp, NULL, NULL, 0 }, /* nn */
479: { roff_unsupp, NULL, NULL, 0 }, /* nop */
480: { roff_nr, NULL, NULL, 0 }, /* nr */
481: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
482: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
483: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
484: { roff_insec, NULL, NULL, 0 }, /* nx */
485: { roff_insec, NULL, NULL, 0 }, /* open */
486: { roff_insec, NULL, NULL, 0 }, /* opena */
487: { roff_line_ignore, NULL, NULL, 0 }, /* os */
488: { roff_unsupp, NULL, NULL, 0 }, /* output */
489: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
490: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
491: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
492: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
493: { roff_insec, NULL, NULL, 0 }, /* pi */
494: { roff_unsupp, NULL, NULL, 0 }, /* PI */
495: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
496: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
497: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
498: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
499: { roff_line_ignore, NULL, NULL, 0 }, /* po */
500: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
501: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
502: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
503: { roff_insec, NULL, NULL, 0 }, /* pso */
504: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
505: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
506: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
507: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
508: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
509: { roff_unsupp, NULL, NULL, 0 }, /* return */
510: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
511: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
512: { roff_line_ignore, NULL, NULL, 0 }, /* rj */
513: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 514: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 515: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
516: { roff_rr, NULL, NULL, 0 }, /* rr */
517: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
518: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
519: { roff_unsupp, NULL, NULL, 0 }, /* schar */
520: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
521: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
522: { roff_unsupp, NULL, NULL, 0 }, /* shift */
523: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
524: { roff_so, NULL, NULL, 0 }, /* so */
525: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
526: { roff_line_ignore, NULL, NULL, 0 }, /* special */
527: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
528: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
529: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
530: { roff_unsupp, NULL, NULL, 0 }, /* substring */
531: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
532: { roff_insec, NULL, NULL, 0 }, /* sy */
533: { roff_T_, NULL, NULL, 0 }, /* T& */
534: { roff_unsupp, NULL, NULL, 0 }, /* tc */
535: { roff_TE, NULL, NULL, 0 }, /* TE */
536: { roff_TH, NULL, NULL, 0 }, /* TH */
537: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
538: { roff_unsupp, NULL, NULL, 0 }, /* tl */
539: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
540: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
541: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
542: { roff_tr, NULL, NULL, 0 }, /* tr */
543: { roff_line_ignore, NULL, NULL, 0 }, /* track */
544: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
545: { roff_insec, NULL, NULL, 0 }, /* trf */
546: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
547: { roff_unsupp, NULL, NULL, 0 }, /* trin */
548: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
549: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
550: { roff_TS, NULL, NULL, 0 }, /* TS */
551: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
552: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
553: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
554: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
555: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
556: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
557: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
558: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
559: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
560: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
561: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
562: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
563: { roff_unsupp, NULL, NULL, 0 }, /* wh */
564: { roff_unsupp, NULL, NULL, 0 }, /* while */
565: { roff_insec, NULL, NULL, 0 }, /* write */
566: { roff_insec, NULL, NULL, 0 }, /* writec */
567: { roff_insec, NULL, NULL, 0 }, /* writem */
568: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
569: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 570: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 571: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 572: };
573:
1.73 schwarze 574: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.47 schwarze 575: const char *const __mdoc_reserved[] = {
576: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
577: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
578: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
579: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.73 schwarze 580: "Dt", "Dv", "Dx", "D1",
581: "Ec", "Ed", "Ef", "Ek", "El", "Em",
582: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.47 schwarze 583: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.73 schwarze 584: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
585: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.47 schwarze 586: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.73 schwarze 587: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
588: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
589: "Sc", "Sh", "Sm", "So", "Sq",
1.47 schwarze 590: "Ss", "St", "Sx", "Sy",
591: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.73 schwarze 592: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.47 schwarze 593: "%P", "%Q", "%R", "%T", "%U", "%V",
594: NULL
595: };
596:
1.73 schwarze 597: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.47 schwarze 598: const char *const __man_reserved[] = {
1.73 schwarze 599: "AT", "B", "BI", "BR", "DT",
600: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
601: "LP", "OP", "P", "PD", "PP",
602: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
603: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.47 schwarze 604: NULL
605: };
606:
1.37 schwarze 607: /* Array of injected predefined strings. */
608: #define PREDEFS_MAX 38
609: static const struct predef predefs[PREDEFS_MAX] = {
610: #include "predefs.in"
611: };
612:
1.177 schwarze 613: static int roffce_lines; /* number of input lines to center */
614: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 615: static int roffit_lines; /* number of lines to delay */
616: static char *roffit_macro; /* nil-terminated macro line */
617:
1.80 schwarze 618:
1.138 schwarze 619: /* --- request table ------------------------------------------------------ */
620:
1.167 schwarze 621: struct ohash *
622: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 623: {
1.167 schwarze 624: struct ohash *htab;
625: struct roffreq *req;
626: enum roff_tok tok;
627: size_t sz;
628: unsigned int slot;
1.3 schwarze 629:
1.167 schwarze 630: htab = mandoc_malloc(sizeof(*htab));
631: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 632:
1.167 schwarze 633: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 634: if (roff_name[tok] == NULL)
635: continue;
1.167 schwarze 636: sz = strlen(roff_name[tok]);
637: req = mandoc_malloc(sizeof(*req) + sz + 1);
638: req->tok = tok;
639: memcpy(req->name, roff_name[tok], sz + 1);
640: slot = ohash_qlookup(htab, req->name);
641: ohash_insert(htab, slot, req);
1.3 schwarze 642: }
1.167 schwarze 643: return htab;
1.3 schwarze 644: }
645:
1.167 schwarze 646: void
647: roffhash_free(struct ohash *htab)
1.1 schwarze 648: {
1.167 schwarze 649: struct roffreq *req;
650: unsigned int slot;
1.1 schwarze 651:
1.167 schwarze 652: if (htab == NULL)
653: return;
654: for (req = ohash_first(htab, &slot); req != NULL;
655: req = ohash_next(htab, &slot))
656: free(req);
657: ohash_delete(htab);
658: free(htab);
659: }
660:
661: enum roff_tok
662: roffhash_find(struct ohash *htab, const char *name, size_t sz)
663: {
664: struct roffreq *req;
665: const char *end;
666:
667: if (sz) {
668: end = name + sz;
669: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
670: } else
671: req = ohash_find(htab, ohash_qlookup(htab, name));
672: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 673: }
674:
1.138 schwarze 675: /* --- stack of request blocks -------------------------------------------- */
676:
1.1 schwarze 677: /*
678: * Pop the current node off of the stack of roff instructions currently
679: * pending.
680: */
681: static void
682: roffnode_pop(struct roff *r)
683: {
684: struct roffnode *p;
685:
1.2 schwarze 686: assert(r->last);
1.80 schwarze 687: p = r->last;
1.2 schwarze 688:
689: r->last = r->last->parent;
1.16 schwarze 690: free(p->name);
691: free(p->end);
1.1 schwarze 692: free(p);
693: }
694:
695: /*
696: * Push a roff node onto the instruction stack. This must later be
697: * removed with roffnode_pop().
698: */
1.11 schwarze 699: static void
1.166 schwarze 700: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 701: int line, int col)
1.1 schwarze 702: {
703: struct roffnode *p;
704:
1.11 schwarze 705: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 706: p->tok = tok;
1.16 schwarze 707: if (name)
708: p->name = mandoc_strdup(name);
1.1 schwarze 709: p->parent = r->last;
710: p->line = line;
711: p->col = col;
1.71 schwarze 712: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 713:
714: r->last = p;
715: }
716:
1.138 schwarze 717: /* --- roff parser state data management ---------------------------------- */
718:
1.1 schwarze 719: static void
720: roff_free1(struct roff *r)
721: {
1.49 schwarze 722: struct tbl_node *tbl;
1.32 schwarze 723: struct eqn_node *e;
1.42 schwarze 724: int i;
1.27 schwarze 725:
1.49 schwarze 726: while (NULL != (tbl = r->first_tbl)) {
727: r->first_tbl = tbl->next;
728: tbl_free(tbl);
1.27 schwarze 729: }
730: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 731:
1.32 schwarze 732: while (NULL != (e = r->first_eqn)) {
733: r->first_eqn = e->next;
734: eqn_free(e);
735: }
736: r->first_eqn = r->last_eqn = r->eqn = NULL;
737:
1.1 schwarze 738: while (r->last)
739: roffnode_pop(r);
1.27 schwarze 740:
1.96 schwarze 741: free (r->rstack);
742: r->rstack = NULL;
743: r->rstacksz = 0;
744: r->rstackpos = -1;
745:
746: roff_freereg(r->regtab);
747: r->regtab = NULL;
748:
1.42 schwarze 749: roff_freestr(r->strtab);
1.178 schwarze 750: roff_freestr(r->rentab);
1.42 schwarze 751: roff_freestr(r->xmbtab);
1.178 schwarze 752: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 753:
754: if (r->xtab)
755: for (i = 0; i < 128; i++)
756: free(r->xtab[i].p);
757: free(r->xtab);
758: r->xtab = NULL;
1.1 schwarze 759: }
760:
761: void
762: roff_reset(struct roff *r)
763: {
764: roff_free1(r);
1.99 schwarze 765: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 766: r->control = '\0';
767: r->escape = '\\';
1.179 ! schwarze 768: roffce_lines = 0;
! 769: roffce_node = NULL;
! 770: roffit_lines = 0;
! 771: roffit_macro = NULL;
1.1 schwarze 772: }
773:
774: void
775: roff_free(struct roff *r)
776: {
777: roff_free1(r);
1.167 schwarze 778: roffhash_free(r->reqtab);
1.1 schwarze 779: free(r);
780: }
781:
782: struct roff *
1.151 schwarze 783: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 784: {
785: struct roff *r;
786:
1.11 schwarze 787: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 788: r->parse = parse;
1.167 schwarze 789: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.72 schwarze 790: r->options = options;
1.99 schwarze 791: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 792: r->rstackpos = -1;
1.175 schwarze 793: r->escape = '\\';
1.149 schwarze 794: return r;
1.137 schwarze 795: }
796:
1.138 schwarze 797: /* --- syntax tree state data management ---------------------------------- */
798:
1.137 schwarze 799: static void
800: roff_man_free1(struct roff_man *man)
801: {
802:
1.138 schwarze 803: if (man->first != NULL)
804: roff_node_delete(man, man->first);
1.137 schwarze 805: free(man->meta.msec);
806: free(man->meta.vol);
807: free(man->meta.os);
808: free(man->meta.arch);
809: free(man->meta.title);
810: free(man->meta.name);
811: free(man->meta.date);
812: }
813:
814: static void
815: roff_man_alloc1(struct roff_man *man)
816: {
817:
818: memset(&man->meta, 0, sizeof(man->meta));
819: man->first = mandoc_calloc(1, sizeof(*man->first));
820: man->first->type = ROFFT_ROOT;
821: man->last = man->first;
822: man->last_es = NULL;
823: man->flags = 0;
824: man->macroset = MACROSET_NONE;
825: man->lastsec = man->lastnamed = SEC_NONE;
826: man->next = ROFF_NEXT_CHILD;
827: }
828:
829: void
830: roff_man_reset(struct roff_man *man)
831: {
832:
833: roff_man_free1(man);
834: roff_man_alloc1(man);
835: }
836:
837: void
838: roff_man_free(struct roff_man *man)
839: {
840:
841: roff_man_free1(man);
842: free(man);
843: }
844:
845: struct roff_man *
846: roff_man_alloc(struct roff *roff, struct mparse *parse,
847: const char *defos, int quick)
848: {
849: struct roff_man *man;
850:
851: man = mandoc_calloc(1, sizeof(*man));
852: man->parse = parse;
853: man->roff = roff;
854: man->defos = defos;
855: man->quick = quick;
856: roff_man_alloc1(man);
1.168 schwarze 857: roff->man = man;
1.149 schwarze 858: return man;
1.1 schwarze 859: }
860:
1.138 schwarze 861: /* --- syntax tree handling ----------------------------------------------- */
862:
863: struct roff_node *
864: roff_node_alloc(struct roff_man *man, int line, int pos,
865: enum roff_type type, int tok)
866: {
867: struct roff_node *n;
868:
869: n = mandoc_calloc(1, sizeof(*n));
870: n->line = line;
871: n->pos = pos;
872: n->tok = tok;
873: n->type = type;
874: n->sec = man->lastsec;
875:
876: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 877: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 878: else
1.157 schwarze 879: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 880: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 881: n->flags |= NODE_LINE;
1.138 schwarze 882: man->flags &= ~MDOC_NEWLINE;
883:
1.149 schwarze 884: return n;
1.138 schwarze 885: }
886:
887: void
888: roff_node_append(struct roff_man *man, struct roff_node *n)
889: {
890:
891: switch (man->next) {
892: case ROFF_NEXT_SIBLING:
1.153 schwarze 893: if (man->last->next != NULL) {
894: n->next = man->last->next;
895: man->last->next->prev = n;
896: } else
897: man->last->parent->last = n;
1.138 schwarze 898: man->last->next = n;
899: n->prev = man->last;
900: n->parent = man->last->parent;
901: break;
902: case ROFF_NEXT_CHILD:
1.159 schwarze 903: if (man->last->child != NULL) {
904: n->next = man->last->child;
905: man->last->child->prev = n;
906: } else
907: man->last->last = n;
1.138 schwarze 908: man->last->child = n;
909: n->parent = man->last;
910: break;
911: default:
912: abort();
913: }
1.154 schwarze 914: man->last = n;
1.138 schwarze 915:
916: switch (n->type) {
917: case ROFFT_HEAD:
918: n->parent->head = n;
919: break;
920: case ROFFT_BODY:
1.154 schwarze 921: if (n->end != ENDBODY_NOT)
922: return;
1.138 schwarze 923: n->parent->body = n;
924: break;
925: case ROFFT_TAIL:
926: n->parent->tail = n;
927: break;
928: default:
1.154 schwarze 929: return;
1.138 schwarze 930: }
1.154 schwarze 931:
932: /*
933: * Copy over the normalised-data pointer of our parent. Not
934: * everybody has one, but copying a null pointer is fine.
935: */
936:
937: n->norm = n->parent->norm;
938: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 939: }
940:
1.139 schwarze 941: void
942: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
943: {
944: struct roff_node *n;
945:
946: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
947: n->string = roff_strdup(man->roff, word);
948: roff_node_append(man, n);
1.158 schwarze 949: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 950: man->next = ROFF_NEXT_SIBLING;
951: }
952:
953: void
954: roff_word_append(struct roff_man *man, const char *word)
955: {
956: struct roff_node *n;
957: char *addstr, *newstr;
958:
959: n = man->last;
960: addstr = roff_strdup(man->roff, word);
961: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
962: free(addstr);
963: free(n->string);
964: n->string = newstr;
965: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 966: }
967:
968: void
969: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
970: {
971: struct roff_node *n;
972:
973: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
974: roff_node_append(man, n);
975: man->next = ROFF_NEXT_CHILD;
976: }
977:
978: struct roff_node *
979: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
980: {
981: struct roff_node *n;
982:
983: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
984: roff_node_append(man, n);
985: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 986: return n;
1.139 schwarze 987: }
988:
1.138 schwarze 989: struct roff_node *
990: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
991: {
992: struct roff_node *n;
993:
994: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
995: roff_node_append(man, n);
996: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 997: return n;
1.138 schwarze 998: }
999:
1000: struct roff_node *
1001: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1002: {
1003: struct roff_node *n;
1004:
1005: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1006: roff_node_append(man, n);
1007: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1008: return n;
1.139 schwarze 1009: }
1010:
1011: void
1012: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1013: {
1014: struct roff_node *n;
1015:
1016: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1017: n->eqn = eqn;
1018: if (eqn->ln > man->last->line)
1.157 schwarze 1019: n->flags |= NODE_LINE;
1.139 schwarze 1020: roff_node_append(man, n);
1021: man->next = ROFF_NEXT_SIBLING;
1022: }
1023:
1024: void
1025: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1026: {
1027: struct roff_node *n;
1028:
1029: if (man->macroset == MACROSET_MAN)
1.174 schwarze 1030: man_breakscope(man, ROFF_TS);
1.139 schwarze 1031: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1032: n->span = tbl;
1033: roff_node_append(man, n);
1.158 schwarze 1034: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 1035: man->next = ROFF_NEXT_SIBLING;
1.138 schwarze 1036: }
1037:
1038: void
1039: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1040: {
1041:
1042: /* Adjust siblings. */
1043:
1044: if (n->prev)
1045: n->prev->next = n->next;
1046: if (n->next)
1047: n->next->prev = n->prev;
1048:
1049: /* Adjust parent. */
1050:
1051: if (n->parent != NULL) {
1052: if (n->parent->child == n)
1053: n->parent->child = n->next;
1054: if (n->parent->last == n)
1055: n->parent->last = n->prev;
1056: }
1057:
1058: /* Adjust parse point. */
1059:
1060: if (man == NULL)
1061: return;
1062: if (man->last == n) {
1063: if (n->prev == NULL) {
1064: man->last = n->parent;
1065: man->next = ROFF_NEXT_CHILD;
1066: } else {
1067: man->last = n->prev;
1068: man->next = ROFF_NEXT_SIBLING;
1069: }
1070: }
1071: if (man->first == n)
1072: man->first = NULL;
1073: }
1074:
1075: void
1076: roff_node_free(struct roff_node *n)
1077: {
1078:
1079: if (n->args != NULL)
1080: mdoc_argv_free(n->args);
1081: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1082: free(n->norm);
1083: free(n->string);
1084: free(n);
1085: }
1086:
1087: void
1088: roff_node_delete(struct roff_man *man, struct roff_node *n)
1089: {
1090:
1091: while (n->child != NULL)
1092: roff_node_delete(man, n->child);
1093: roff_node_unlink(man, n);
1094: roff_node_free(n);
1.141 schwarze 1095: }
1096:
1097: void
1098: deroff(char **dest, const struct roff_node *n)
1099: {
1100: char *cp;
1101: size_t sz;
1102:
1103: if (n->type != ROFFT_TEXT) {
1104: for (n = n->child; n != NULL; n = n->next)
1105: deroff(dest, n);
1106: return;
1107: }
1108:
1.160 schwarze 1109: /* Skip leading whitespace. */
1.141 schwarze 1110:
1.160 schwarze 1111: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1112: if (cp[0] == '\\' && cp[1] != '\0' &&
1113: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1114: cp++;
1.160 schwarze 1115: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1116: break;
1117: }
1118:
1.161 schwarze 1119: /* Skip trailing backslash. */
1120:
1121: sz = strlen(cp);
1.162 schwarze 1122: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1123: sz--;
1124:
1.141 schwarze 1125: /* Skip trailing whitespace. */
1126:
1.161 schwarze 1127: for (; sz; sz--)
1.141 schwarze 1128: if ( ! isspace((unsigned char)cp[sz-1]))
1129: break;
1130:
1131: /* Skip empty strings. */
1132:
1133: if (sz == 0)
1134: return;
1135:
1136: if (*dest == NULL) {
1137: *dest = mandoc_strndup(cp, sz);
1138: return;
1139: }
1140:
1141: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1142: free(*dest);
1143: *dest = cp;
1.138 schwarze 1144: }
1145:
1146: /* --- main functions of the roff parser ---------------------------------- */
1147:
1.8 schwarze 1148: /*
1.79 schwarze 1149: * In the current line, expand escape sequences that tend to get
1150: * used in numerical expressions and conditional requests.
1151: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1152: */
1.45 schwarze 1153: static enum rofferr
1.110 schwarze 1154: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1155: {
1.81 schwarze 1156: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1157: const char *start; /* start of the string to process */
1.82 schwarze 1158: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1159: const char *stnam; /* start of the name, after "[(*" */
1160: const char *cp; /* end of the name, e.g. before ']' */
1161: const char *res; /* the string to be substituted */
1.110 schwarze 1162: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1163: size_t maxl; /* expected length of the escape name */
1164: size_t naml; /* actual length of the escape name */
1.109 schwarze 1165: enum mandoc_esc esc; /* type of the escape sequence */
1166: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1167: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1168: int npos; /* position in numeric expression */
1.91 schwarze 1169: int arg_complete; /* argument not interrupted by eol */
1.175 schwarze 1170: int done; /* no more input available */
1.79 schwarze 1171: char term; /* character terminating the escape */
1.8 schwarze 1172:
1.175 schwarze 1173: /* Search forward for comments. */
1174:
1175: done = 0;
1176: start = buf->buf + pos;
1177: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1178: if (stesc[0] != r->escape || stesc[1] == '\0')
1179: continue;
1180: stesc++;
1181: if (*stesc != '"' && *stesc != '#')
1182: continue;
1183: cp = strchr(stesc--, '\0') - 1;
1184: if (*cp == '\n') {
1185: done = 1;
1186: cp--;
1187: }
1188: if (*cp == ' ' || *cp == '\t')
1189: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1190: ln, cp - buf->buf, NULL);
1191: while (stesc > start && stesc[-1] == ' ')
1192: stesc--;
1193: *stesc = '\0';
1194: break;
1195: }
1196: if (stesc == start)
1197: return ROFF_CONT;
1198: stesc--;
1199:
1200: /* Notice the end of the input. */
1201:
1202: if (*stesc == '\n') {
1203: *stesc-- = '\0';
1204: done = 1;
1205: }
1206:
1.43 schwarze 1207: expand_count = 0;
1.175 schwarze 1208: while (stesc >= start) {
1.43 schwarze 1209:
1.78 schwarze 1210: /* Search backwards for the next backslash. */
1211:
1.175 schwarze 1212: if (*stesc != r->escape) {
1213: if (*stesc == '\\') {
1214: *stesc = '\0';
1215: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1216: buf->buf, stesc + 1) + 1;
1217: start = nbuf + pos;
1218: stesc = nbuf + (stesc - buf->buf);
1219: free(buf->buf);
1220: buf->buf = nbuf;
1221: }
1222: stesc--;
1.78 schwarze 1223: continue;
1.175 schwarze 1224: }
1.78 schwarze 1225:
1226: /* If it is escaped, skip it. */
1227:
1228: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1229: if (*cp != r->escape)
1.78 schwarze 1230: break;
1231:
1.110 schwarze 1232: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1233: while (stesc > cp)
1234: *stesc-- = '\\';
1.78 schwarze 1235: continue;
1.175 schwarze 1236: } else if (stesc[1] != '\0') {
1237: *stesc = '\\';
1238: } else {
1239: *stesc-- = '\0';
1240: if (done)
1241: continue;
1242: else
1243: return ROFF_APPEND;
1.78 schwarze 1244: }
1.23 schwarze 1245:
1.79 schwarze 1246: /* Decide whether to expand or to check only. */
1.23 schwarze 1247:
1.79 schwarze 1248: term = '\0';
1.78 schwarze 1249: cp = stesc + 1;
1.53 schwarze 1250: switch (*cp) {
1.80 schwarze 1251: case '*':
1.53 schwarze 1252: res = NULL;
1253: break;
1.80 schwarze 1254: case 'B':
1255: case 'w':
1.79 schwarze 1256: term = cp[1];
1257: /* FALLTHROUGH */
1.80 schwarze 1258: case 'n':
1.53 schwarze 1259: res = ubuf;
1260: break;
1261: default:
1.109 schwarze 1262: esc = mandoc_escape(&cp, &stnam, &inaml);
1263: if (esc == ESCAPE_ERROR ||
1264: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1265: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1266: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1267: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1268: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1269: stesc--;
1.78 schwarze 1270: continue;
1.42 schwarze 1271: }
1272:
1.78 schwarze 1273: if (EXPAND_LIMIT < ++expand_count) {
1274: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1275: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1276: return ROFF_IGN;
1.78 schwarze 1277: }
1.23 schwarze 1278:
1279: /*
1280: * The third character decides the length
1.53 schwarze 1281: * of the name of the string or register.
1.23 schwarze 1282: * Save a pointer to the name.
1283: */
1284:
1.110 schwarze 1285: if (term == '\0') {
1.79 schwarze 1286: switch (*++cp) {
1.80 schwarze 1287: case '\0':
1.79 schwarze 1288: maxl = 0;
1289: break;
1.80 schwarze 1290: case '(':
1.79 schwarze 1291: cp++;
1292: maxl = 2;
1293: break;
1.80 schwarze 1294: case '[':
1.79 schwarze 1295: cp++;
1296: term = ']';
1297: maxl = 0;
1298: break;
1299: default:
1300: maxl = 1;
1301: break;
1302: }
1303: } else {
1304: cp += 2;
1.8 schwarze 1305: maxl = 0;
1306: }
1.23 schwarze 1307: stnam = cp;
1.8 schwarze 1308:
1.23 schwarze 1309: /* Advance to the end of the name. */
1.8 schwarze 1310:
1.125 schwarze 1311: naml = 0;
1.91 schwarze 1312: arg_complete = 1;
1.125 schwarze 1313: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1314: if (*cp == '\0') {
1.92 schwarze 1315: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1316: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1317: arg_complete = 0;
1.79 schwarze 1318: break;
1.42 schwarze 1319: }
1.110 schwarze 1320: if (maxl == 0 && *cp == term) {
1.79 schwarze 1321: cp++;
1.125 schwarze 1322: break;
1323: }
1324: if (*cp++ != '\\' || stesc[1] != 'w') {
1325: naml++;
1326: continue;
1327: }
1328: switch (mandoc_escape(&cp, NULL, NULL)) {
1329: case ESCAPE_SPECIAL:
1330: case ESCAPE_UNICODE:
1331: case ESCAPE_NUMBERED:
1332: case ESCAPE_OVERSTRIKE:
1333: naml++;
1334: break;
1335: default:
1.8 schwarze 1336: break;
1.79 schwarze 1337: }
1.8 schwarze 1338: }
1339:
1.23 schwarze 1340: /*
1341: * Retrieve the replacement string; if it is
1342: * undefined, resume searching for escapes.
1343: */
1344:
1.79 schwarze 1345: switch (stesc[1]) {
1.80 schwarze 1346: case '*':
1.91 schwarze 1347: if (arg_complete)
1348: res = roff_getstrn(r, stnam, naml);
1.79 schwarze 1349: break;
1.80 schwarze 1350: case 'B':
1.79 schwarze 1351: npos = 0;
1.91 schwarze 1352: ubuf[0] = arg_complete &&
1.133 schwarze 1353: roff_evalnum(r, ln, stnam, &npos,
1354: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1355: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1356: ubuf[1] = '\0';
1357: break;
1.80 schwarze 1358: case 'n':
1.91 schwarze 1359: if (arg_complete)
1360: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1361: roff_getregn(r, stnam, naml));
1362: else
1363: ubuf[0] = '\0';
1.79 schwarze 1364: break;
1.80 schwarze 1365: case 'w':
1.91 schwarze 1366: /* use even incomplete args */
1.81 schwarze 1367: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1368: 24 * (int)naml);
1369: break;
1370: }
1.8 schwarze 1371:
1.110 schwarze 1372: if (res == NULL) {
1.92 schwarze 1373: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1374: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1375: "%.*s", (int)naml, stnam);
1.37 schwarze 1376: res = "";
1.118 schwarze 1377: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1378: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1379: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1380: return ROFF_IGN;
1.8 schwarze 1381: }
1382:
1.23 schwarze 1383: /* Replace the escape sequence by the string. */
1384:
1.82 schwarze 1385: *stesc = '\0';
1.110 schwarze 1386: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1387: buf->buf, res, cp) + 1;
1.8 schwarze 1388:
1.78 schwarze 1389: /* Prepare for the next replacement. */
1.8 schwarze 1390:
1.78 schwarze 1391: start = nbuf + pos;
1.110 schwarze 1392: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1393: free(buf->buf);
1394: buf->buf = nbuf;
1.42 schwarze 1395: }
1.149 schwarze 1396: return ROFF_CONT;
1.42 schwarze 1397: }
1398:
1399: /*
1.147 schwarze 1400: * Process text streams.
1.42 schwarze 1401: */
1402: static enum rofferr
1.177 schwarze 1403: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1404: {
1405: size_t sz;
1406: const char *start;
1.51 schwarze 1407: char *p;
1408: int isz;
1.42 schwarze 1409: enum mandoc_esc esc;
1410:
1.147 schwarze 1411: /* Spring the input line trap. */
1412:
1413: if (roffit_lines == 1) {
1414: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1415: free(buf->buf);
1416: buf->buf = p;
1417: buf->sz = isz + 1;
1418: *offs = 0;
1419: free(roffit_macro);
1420: roffit_lines = 0;
1.149 schwarze 1421: return ROFF_REPARSE;
1.147 schwarze 1422: } else if (roffit_lines > 1)
1423: --roffit_lines;
1424:
1.177 schwarze 1425: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1426: if (roffce_lines < 1) {
1427: r->man->last = roffce_node;
1428: r->man->next = ROFF_NEXT_SIBLING;
1429: roffce_lines = 0;
1430: roffce_node = NULL;
1431: } else
1432: roffce_lines--;
1433: }
1434:
1.147 schwarze 1435: /* Convert all breakable hyphens into ASCII_HYPH. */
1436:
1.110 schwarze 1437: start = p = buf->buf + pos;
1.42 schwarze 1438:
1.110 schwarze 1439: while (*p != '\0') {
1.42 schwarze 1440: sz = strcspn(p, "-\\");
1441: p += sz;
1442:
1.110 schwarze 1443: if (*p == '\0')
1.42 schwarze 1444: break;
1445:
1.110 schwarze 1446: if (*p == '\\') {
1.42 schwarze 1447: /* Skip over escapes. */
1448: p++;
1.62 schwarze 1449: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1450: if (esc == ESCAPE_ERROR)
1.42 schwarze 1451: break;
1.136 schwarze 1452: while (*p == '-')
1453: p++;
1.42 schwarze 1454: continue;
1455: } else if (p == start) {
1456: p++;
1457: continue;
1458: }
1459:
1.44 schwarze 1460: if (isalpha((unsigned char)p[-1]) &&
1461: isalpha((unsigned char)p[1]))
1.42 schwarze 1462: *p = ASCII_HYPH;
1463: p++;
1.8 schwarze 1464: }
1.149 schwarze 1465: return ROFF_CONT;
1.8 schwarze 1466: }
1467:
1.1 schwarze 1468: enum rofferr
1.110 schwarze 1469: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1470: {
1.166 schwarze 1471: enum roff_tok t;
1.27 schwarze 1472: enum rofferr e;
1.110 schwarze 1473: int pos; /* parse point */
1.115 schwarze 1474: int spos; /* saved parse point for messages */
1.110 schwarze 1475: int ppos; /* original offset in buf->buf */
1476: int ctl; /* macro line (boolean) */
1477:
1478: ppos = pos = *offs;
1.1 schwarze 1479:
1.102 schwarze 1480: /* Handle in-line equation delimiters. */
1481:
1.108 schwarze 1482: if (r->tbl == NULL &&
1483: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1484: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1485: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1486: if (e == ROFF_REPARSE)
1.149 schwarze 1487: return e;
1.102 schwarze 1488: assert(e == ROFF_CONT);
1489: }
1490:
1491: /* Expand some escape sequences. */
1.8 schwarze 1492:
1.110 schwarze 1493: e = roff_res(r, buf, ln, pos);
1.175 schwarze 1494: if (e == ROFF_IGN || e == ROFF_APPEND)
1.149 schwarze 1495: return e;
1.110 schwarze 1496: assert(e == ROFF_CONT);
1.8 schwarze 1497:
1.110 schwarze 1498: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1499:
1.8 schwarze 1500: /*
1.2 schwarze 1501: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1502: * text through the macro's filter.
1503: * Equations process all content themselves.
1504: * Tables process almost all content themselves, but we want
1505: * to warn about macros before passing it there.
1.2 schwarze 1506: */
1507:
1.124 schwarze 1508: if (r->last != NULL && ! ctl) {
1.2 schwarze 1509: t = r->last->tok;
1.110 schwarze 1510: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.166 schwarze 1511: if (e == ROFF_IGN)
1.149 schwarze 1512: return e;
1.166 schwarze 1513: assert(e == ROFF_CONT);
1.54 schwarze 1514: }
1.124 schwarze 1515: if (r->eqn != NULL)
1.149 schwarze 1516: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.124 schwarze 1517: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.149 schwarze 1518: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.124 schwarze 1519: if ( ! ctl)
1.177 schwarze 1520: return roff_parsetext(r, buf, pos, offs);
1.100 schwarze 1521:
1522: /* Skip empty request lines. */
1523:
1.110 schwarze 1524: if (buf->buf[pos] == '"') {
1.100 schwarze 1525: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1526: ln, pos, NULL);
1.149 schwarze 1527: return ROFF_IGN;
1.110 schwarze 1528: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1529: return ROFF_IGN;
1.2 schwarze 1530:
1531: /*
1532: * If a scope is open, go to the child handler for that macro,
1533: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1534: * Don't do so if an equation is open.
1.2 schwarze 1535: */
1536:
1537: if (r->last) {
1.1 schwarze 1538: t = r->last->tok;
1.149 schwarze 1539: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1540: }
1541:
1.115 schwarze 1542: /* No scope is open. This is a new request or macro. */
1543:
1544: spos = pos;
1545: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1546:
1547: /* Tables ignore most macros. */
1548:
1.166 schwarze 1549: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS)) {
1.115 schwarze 1550: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1551: ln, pos, buf->buf + spos);
1.129 schwarze 1552: if (t == ROFF_TS)
1.149 schwarze 1553: return ROFF_IGN;
1.129 schwarze 1554: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1555: pos++;
1.163 schwarze 1556: while (buf->buf[pos] == ' ')
1.129 schwarze 1557: pos++;
1.149 schwarze 1558: return tbl_read(r->tbl, ln, buf->buf, pos);
1.115 schwarze 1559: }
1560:
1.177 schwarze 1561: /* For now, let high level macros abort .ce mode. */
1562:
1563: if (ctl && roffce_node != NULL &&
1564: (t == TOKEN_NONE || t == ROFF_EQ || t == ROFF_TS)) {
1565: r->man->last = roffce_node;
1566: r->man->next = ROFF_NEXT_SIBLING;
1567: roffce_lines = 0;
1568: roffce_node = NULL;
1569: }
1570:
1.2 schwarze 1571: /*
1.115 schwarze 1572: * This is neither a roff request nor a user-defined macro.
1573: * Let the standard macro set parsers handle it.
1.2 schwarze 1574: */
1575:
1.166 schwarze 1576: if (t == TOKEN_NONE)
1.149 schwarze 1577: return ROFF_CONT;
1.115 schwarze 1578:
1579: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1580:
1.168 schwarze 1581: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1582: }
1583:
1.27 schwarze 1584: void
1.2 schwarze 1585: roff_endparse(struct roff *r)
1586: {
1.1 schwarze 1587:
1.27 schwarze 1588: if (r->last)
1.94 schwarze 1589: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1590: r->last->line, r->last->col,
1.167 schwarze 1591: roff_name[r->last->tok]);
1.27 schwarze 1592:
1.32 schwarze 1593: if (r->eqn) {
1.94 schwarze 1594: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1595: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1596: eqn_end(&r->eqn);
1.32 schwarze 1597: }
1598:
1.27 schwarze 1599: if (r->tbl) {
1.94 schwarze 1600: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1601: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1602: tbl_end(&r->tbl);
1.27 schwarze 1603: }
1.1 schwarze 1604: }
1605:
1606: /*
1607: * Parse a roff node's type from the input buffer. This must be in the
1608: * form of ".foo xxx" in the usual way.
1609: */
1.166 schwarze 1610: static enum roff_tok
1.87 schwarze 1611: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1612: {
1.87 schwarze 1613: char *cp;
1.16 schwarze 1614: const char *mac;
1615: size_t maclen;
1.166 schwarze 1616: enum roff_tok t;
1.1 schwarze 1617:
1.87 schwarze 1618: cp = buf + *pos;
1619:
1620: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1621: return TOKEN_NONE;
1.1 schwarze 1622:
1.87 schwarze 1623: mac = cp;
1624: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1625:
1.178 schwarze 1626: t = (r->current_string = roff_getstrn(r, mac, maclen)) ?
1627: ROFF_USERDEF :
1628: (r->current_string = roff_getrenn(r, mac, maclen)) ?
1629: ROFF_RENAMED : roffhash_find(r->reqtab, mac, maclen);
1.1 schwarze 1630:
1.166 schwarze 1631: if (t != TOKEN_NONE)
1.87 schwarze 1632: *pos = cp - buf;
1.1 schwarze 1633:
1.149 schwarze 1634: return t;
1.1 schwarze 1635: }
1636:
1.138 schwarze 1637: /* --- handling of request blocks ----------------------------------------- */
1638:
1.1 schwarze 1639: static enum rofferr
1.2 schwarze 1640: roff_cblock(ROFF_ARGS)
1.1 schwarze 1641: {
1642:
1.2 schwarze 1643: /*
1644: * A block-close `..' should only be invoked as a child of an
1645: * ignore macro, otherwise raise a warning and just ignore it.
1646: */
1647:
1.110 schwarze 1648: if (r->last == NULL) {
1.94 schwarze 1649: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1650: ln, ppos, "..");
1.149 schwarze 1651: return ROFF_IGN;
1.2 schwarze 1652: }
1.1 schwarze 1653:
1.2 schwarze 1654: switch (r->last->tok) {
1.80 schwarze 1655: case ROFF_am:
1.93 schwarze 1656: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1657: case ROFF_ami:
1658: case ROFF_de:
1.23 schwarze 1659: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1660: case ROFF_dei:
1661: case ROFF_ig:
1.2 schwarze 1662: break;
1663: default:
1.94 schwarze 1664: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1665: ln, ppos, "..");
1.149 schwarze 1666: return ROFF_IGN;
1.2 schwarze 1667: }
1668:
1.110 schwarze 1669: if (buf->buf[pos] != '\0')
1.90 schwarze 1670: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1671: ".. %s", buf->buf + pos);
1.2 schwarze 1672:
1673: roffnode_pop(r);
1674: roffnode_cleanscope(r);
1.149 schwarze 1675: return ROFF_IGN;
1.2 schwarze 1676:
1677: }
1.1 schwarze 1678:
1.2 schwarze 1679: static void
1680: roffnode_cleanscope(struct roff *r)
1681: {
1.1 schwarze 1682:
1.2 schwarze 1683: while (r->last) {
1.46 schwarze 1684: if (--r->last->endspan != 0)
1.2 schwarze 1685: break;
1686: roffnode_pop(r);
1687: }
1688: }
1.1 schwarze 1689:
1.68 schwarze 1690: static void
1691: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1692: {
1.1 schwarze 1693:
1.2 schwarze 1694: if (NULL == r->last) {
1.94 schwarze 1695: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1696: ln, ppos, "\\}");
1.68 schwarze 1697: return;
1.2 schwarze 1698: }
1.1 schwarze 1699:
1.2 schwarze 1700: switch (r->last->tok) {
1.80 schwarze 1701: case ROFF_el:
1702: case ROFF_ie:
1703: case ROFF_if:
1.2 schwarze 1704: break;
1705: default:
1.94 schwarze 1706: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1707: ln, ppos, "\\}");
1.68 schwarze 1708: return;
1.2 schwarze 1709: }
1.1 schwarze 1710:
1.2 schwarze 1711: if (r->last->endspan > -1) {
1.94 schwarze 1712: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1713: ln, ppos, "\\}");
1.68 schwarze 1714: return;
1.2 schwarze 1715: }
1716:
1717: roffnode_pop(r);
1718: roffnode_cleanscope(r);
1.68 schwarze 1719: return;
1.1 schwarze 1720: }
1721:
1722: static enum rofferr
1.2 schwarze 1723: roff_block(ROFF_ARGS)
1.1 schwarze 1724: {
1.93 schwarze 1725: const char *name;
1726: char *iname, *cp;
1.86 schwarze 1727: size_t namesz;
1.16 schwarze 1728:
1.93 schwarze 1729: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1730:
1.110 schwarze 1731: if (tok == ROFF_de1)
1.93 schwarze 1732: tok = ROFF_de;
1.123 schwarze 1733: else if (tok == ROFF_dei1)
1734: tok = ROFF_dei;
1.110 schwarze 1735: else if (tok == ROFF_am1)
1.93 schwarze 1736: tok = ROFF_am;
1.123 schwarze 1737: else if (tok == ROFF_ami1)
1738: tok = ROFF_ami;
1.93 schwarze 1739:
1740: /* Parse the macro name argument. */
1741:
1.110 schwarze 1742: cp = buf->buf + pos;
1743: if (tok == ROFF_ig) {
1.93 schwarze 1744: iname = NULL;
1745: namesz = 0;
1746: } else {
1747: iname = cp;
1748: namesz = roff_getname(r, &cp, ln, ppos);
1749: iname[namesz] = '\0';
1750: }
1.22 schwarze 1751:
1.93 schwarze 1752: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1753:
1.110 schwarze 1754: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1755: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1756: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1757: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1758: "%.*s", (int)namesz, iname);
1759: namesz = 0;
1760: } else
1761: namesz = strlen(name);
1762: } else
1763: name = iname;
1.22 schwarze 1764:
1.110 schwarze 1765: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1766: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1767: ln, ppos, roff_name[tok]);
1.149 schwarze 1768: return ROFF_IGN;
1.93 schwarze 1769: }
1.2 schwarze 1770:
1.16 schwarze 1771: roffnode_push(r, tok, name, ln, ppos);
1772:
1773: /*
1774: * At the beginning of a `de' macro, clear the existing string
1775: * with the same name, if there is one. New content will be
1.66 schwarze 1776: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1777: */
1.22 schwarze 1778:
1.110 schwarze 1779: if (tok == ROFF_de || tok == ROFF_dei)
1.86 schwarze 1780: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.2 schwarze 1781:
1.110 schwarze 1782: if (*cp == '\0')
1.149 schwarze 1783: return ROFF_IGN;
1.1 schwarze 1784:
1.93 schwarze 1785: /* Get the custom end marker. */
1.22 schwarze 1786:
1.93 schwarze 1787: iname = cp;
1.86 schwarze 1788: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1789:
1790: /* Resolve the end marker if it is indirect. */
1791:
1.110 schwarze 1792: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1793: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1794: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1795: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1796: "%.*s", (int)namesz, iname);
1797: namesz = 0;
1798: } else
1799: namesz = strlen(name);
1800: } else
1801: name = iname;
1802:
1.86 schwarze 1803: if (namesz)
1804: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1805:
1.110 schwarze 1806: if (*cp != '\0')
1.90 schwarze 1807: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 1808: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 1809:
1.149 schwarze 1810: return ROFF_IGN;
1.1 schwarze 1811: }
1812:
1813: static enum rofferr
1.2 schwarze 1814: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1815: {
1.166 schwarze 1816: enum roff_tok t;
1.2 schwarze 1817: int i, j;
1818:
1819: /*
1820: * First check whether a custom macro exists at this level. If
1821: * it does, then check against it. This is some of groff's
1822: * stranger behaviours. If we encountered a custom end-scope
1823: * tag and that tag also happens to be a "real" macro, then we
1824: * need to try interpreting it again as a real macro. If it's
1825: * not, then return ignore. Else continue.
1826: */
1827:
1828: if (r->last->end) {
1.35 schwarze 1829: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1830: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1831: break;
1.1 schwarze 1832:
1.110 schwarze 1833: if (r->last->end[j] == '\0' &&
1834: (buf->buf[i] == '\0' ||
1835: buf->buf[i] == ' ' ||
1836: buf->buf[i] == '\t')) {
1.2 schwarze 1837: roffnode_pop(r);
1838: roffnode_cleanscope(r);
1.1 schwarze 1839:
1.110 schwarze 1840: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1841: i++;
1842:
1843: pos = i;
1.110 schwarze 1844: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 1845: TOKEN_NONE)
1.149 schwarze 1846: return ROFF_RERUN;
1847: return ROFF_IGN;
1.2 schwarze 1848: }
1.1 schwarze 1849: }
1850:
1.2 schwarze 1851: /*
1852: * If we have no custom end-query or lookup failed, then try
1853: * pulling it out of the hashtable.
1854: */
1.1 schwarze 1855:
1.110 schwarze 1856: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1857:
1.110 schwarze 1858: if (t != ROFF_cblock) {
1859: if (tok != ROFF_ig)
1860: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1861: return ROFF_IGN;
1.16 schwarze 1862: }
1.1 schwarze 1863:
1.149 schwarze 1864: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1865: }
1866:
1867: static enum rofferr
1868: roff_block_text(ROFF_ARGS)
1869: {
1870:
1.110 schwarze 1871: if (tok != ROFF_ig)
1872: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1873:
1.149 schwarze 1874: return ROFF_IGN;
1.2 schwarze 1875: }
1876:
1877: static enum rofferr
1878: roff_cond_sub(ROFF_ARGS)
1879: {
1.166 schwarze 1880: enum roff_tok t;
1.37 schwarze 1881: char *ep;
1.71 schwarze 1882: int rr;
1.2 schwarze 1883:
1884: rr = r->last->rule;
1.37 schwarze 1885: roffnode_cleanscope(r);
1.110 schwarze 1886: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1887:
1.37 schwarze 1888: /*
1.50 schwarze 1889: * Fully handle known macros when they are structurally
1890: * required or when the conditional evaluated to true.
1.5 schwarze 1891: */
1892:
1.166 schwarze 1893: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.149 schwarze 1894: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.39 schwarze 1895:
1.69 schwarze 1896: /*
1897: * If `\}' occurs on a macro line without a preceding macro,
1898: * drop the line completely.
1899: */
1900:
1.110 schwarze 1901: ep = buf->buf + pos;
1902: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1903: rr = 0;
1.69 schwarze 1904:
1.50 schwarze 1905: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1906:
1.110 schwarze 1907: while ((ep = strchr(ep, '\\')) != NULL) {
1908: if (*(++ep) == '}') {
1.70 schwarze 1909: *ep = '&';
1.110 schwarze 1910: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1911: }
1.119 schwarze 1912: if (*ep != '\0')
1913: ++ep;
1.50 schwarze 1914: }
1.149 schwarze 1915: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1916: }
1917:
1918: static enum rofferr
1919: roff_cond_text(ROFF_ARGS)
1920: {
1.37 schwarze 1921: char *ep;
1.71 schwarze 1922: int rr;
1.2 schwarze 1923:
1924: rr = r->last->rule;
1.37 schwarze 1925: roffnode_cleanscope(r);
1.1 schwarze 1926:
1.110 schwarze 1927: ep = buf->buf + pos;
1928: while ((ep = strchr(ep, '\\')) != NULL) {
1929: if (*(++ep) == '}') {
1.70 schwarze 1930: *ep = '&';
1.110 schwarze 1931: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1932: }
1.119 schwarze 1933: if (*ep != '\0')
1934: ++ep;
1.2 schwarze 1935: }
1.149 schwarze 1936: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1937: }
1938:
1.138 schwarze 1939: /* --- handling of numeric and conditional expressions -------------------- */
1940:
1.77 schwarze 1941: /*
1942: * Parse a single signed integer number. Stop at the first non-digit.
1943: * If there is at least one digit, return success and advance the
1944: * parse point, else return failure and let the parse point unchanged.
1945: * Ignore overflows, treat them just like the C language.
1946: */
1.56 schwarze 1947: static int
1.133 schwarze 1948: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 1949: {
1.133 schwarze 1950: int myres, scaled, n, p;
1.79 schwarze 1951:
1952: if (NULL == res)
1953: res = &myres;
1.56 schwarze 1954:
1955: p = *pos;
1956: n = v[p] == '-';
1.133 schwarze 1957: if (n || v[p] == '+')
1.56 schwarze 1958: p++;
1959:
1.133 schwarze 1960: if (flags & ROFFNUM_WHITE)
1961: while (isspace((unsigned char)v[p]))
1962: p++;
1963:
1.56 schwarze 1964: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 1965: *res = 10 * *res + v[p] - '0';
1.56 schwarze 1966: if (p == *pos + n)
1967: return 0;
1968:
1969: if (n)
1970: *res = -*res;
1971:
1.126 schwarze 1972: /* Each number may be followed by one optional scaling unit. */
1973:
1974: switch (v[p]) {
1975: case 'f':
1.133 schwarze 1976: scaled = *res * 65536;
1.126 schwarze 1977: break;
1978: case 'i':
1.133 schwarze 1979: scaled = *res * 240;
1.126 schwarze 1980: break;
1981: case 'c':
1.133 schwarze 1982: scaled = *res * 240 / 2.54;
1.126 schwarze 1983: break;
1984: case 'v':
1985: case 'P':
1.133 schwarze 1986: scaled = *res * 40;
1.126 schwarze 1987: break;
1988: case 'm':
1989: case 'n':
1.133 schwarze 1990: scaled = *res * 24;
1.126 schwarze 1991: break;
1992: case 'p':
1.133 schwarze 1993: scaled = *res * 10 / 3;
1.126 schwarze 1994: break;
1995: case 'u':
1.133 schwarze 1996: scaled = *res;
1.126 schwarze 1997: break;
1998: case 'M':
1.133 schwarze 1999: scaled = *res * 6 / 25;
1.126 schwarze 2000: break;
2001: default:
1.133 schwarze 2002: scaled = *res;
1.126 schwarze 2003: p--;
2004: break;
2005: }
1.133 schwarze 2006: if (flags & ROFFNUM_SCALE)
2007: *res = scaled;
1.126 schwarze 2008:
2009: *pos = p + 1;
1.149 schwarze 2010: return 1;
1.56 schwarze 2011: }
2012:
1.71 schwarze 2013: /*
2014: * Evaluate a string comparison condition.
2015: * The first character is the delimiter.
2016: * Succeed if the string up to its second occurrence
2017: * matches the string up to its third occurence.
2018: * Advance the cursor after the third occurrence
2019: * or lacking that, to the end of the line.
2020: */
2021: static int
2022: roff_evalstrcond(const char *v, int *pos)
2023: {
2024: const char *s1, *s2, *s3;
2025: int match;
2026:
2027: match = 0;
2028: s1 = v + *pos; /* initial delimiter */
2029: s2 = s1 + 1; /* for scanning the first string */
2030: s3 = strchr(s2, *s1); /* for scanning the second string */
2031:
2032: if (NULL == s3) /* found no middle delimiter */
2033: goto out;
2034:
2035: while ('\0' != *++s3) {
2036: if (*s2 != *s3) { /* mismatch */
2037: s3 = strchr(s3, *s1);
2038: break;
2039: }
2040: if (*s3 == *s1) { /* found the final delimiter */
2041: match = 1;
2042: break;
2043: }
2044: s2++;
2045: }
2046:
2047: out:
2048: if (NULL == s3)
2049: s3 = strchr(s2, '\0');
1.114 schwarze 2050: else if (*s3 != '\0')
1.71 schwarze 2051: s3++;
2052: *pos = s3 - v;
1.149 schwarze 2053: return match;
1.71 schwarze 2054: }
2055:
1.77 schwarze 2056: /*
2057: * Evaluate an optionally negated single character, numerical,
2058: * or string condition.
2059: */
1.71 schwarze 2060: static int
1.143 schwarze 2061: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2062: {
1.143 schwarze 2063: char *cp, *name;
2064: size_t sz;
1.113 schwarze 2065: int number, savepos, wanttrue;
1.5 schwarze 2066:
1.71 schwarze 2067: if ('!' == v[*pos]) {
2068: wanttrue = 0;
2069: (*pos)++;
2070: } else
2071: wanttrue = 1;
2072:
1.5 schwarze 2073: switch (v[*pos]) {
1.112 schwarze 2074: case '\0':
1.149 schwarze 2075: return 0;
1.80 schwarze 2076: case 'n':
2077: case 'o':
1.5 schwarze 2078: (*pos)++;
1.149 schwarze 2079: return wanttrue;
1.80 schwarze 2080: case 'c':
2081: case 'd':
2082: case 'e':
2083: case 't':
1.111 schwarze 2084: case 'v':
1.5 schwarze 2085: (*pos)++;
1.149 schwarze 2086: return !wanttrue;
1.143 schwarze 2087: case 'r':
2088: cp = name = v + ++*pos;
2089: sz = roff_getname(r, &cp, ln, *pos);
2090: *pos = cp - v;
1.149 schwarze 2091: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.5 schwarze 2092: default:
2093: break;
2094: }
2095:
1.113 schwarze 2096: savepos = *pos;
1.133 schwarze 2097: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2098: return (number > 0) == wanttrue;
1.113 schwarze 2099: else if (*pos == savepos)
1.149 schwarze 2100: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2101: else
1.149 schwarze 2102: return 0;
1.5 schwarze 2103: }
2104:
1.2 schwarze 2105: static enum rofferr
1.21 schwarze 2106: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2107: {
1.30 schwarze 2108:
1.149 schwarze 2109: return ROFF_IGN;
1.21 schwarze 2110: }
2111:
2112: static enum rofferr
1.123 schwarze 2113: roff_insec(ROFF_ARGS)
2114: {
2115:
2116: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2117: ln, ppos, roff_name[tok]);
1.149 schwarze 2118: return ROFF_IGN;
1.123 schwarze 2119: }
2120:
2121: static enum rofferr
2122: roff_unsupp(ROFF_ARGS)
2123: {
2124:
2125: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2126: ln, ppos, roff_name[tok]);
1.149 schwarze 2127: return ROFF_IGN;
1.123 schwarze 2128: }
2129:
2130: static enum rofferr
1.2 schwarze 2131: roff_cond(ROFF_ARGS)
2132: {
1.46 schwarze 2133:
2134: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2135:
1.80 schwarze 2136: /*
1.35 schwarze 2137: * An `.el' has no conditional body: it will consume the value
2138: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2139: * defaults to DENY.
1.35 schwarze 2140: *
2141: * If we're not an `el', however, then evaluate the conditional.
2142: */
1.1 schwarze 2143:
1.110 schwarze 2144: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2145: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2146: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2147:
1.35 schwarze 2148: /*
2149: * An if-else will put the NEGATION of the current evaluated
2150: * conditional into the stack of rules.
2151: */
2152:
1.110 schwarze 2153: if (tok == ROFF_ie) {
1.96 schwarze 2154: if (r->rstackpos + 1 == r->rstacksz) {
2155: r->rstacksz += 16;
2156: r->rstack = mandoc_reallocarray(r->rstack,
2157: r->rstacksz, sizeof(int));
1.35 schwarze 2158: }
1.71 schwarze 2159: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2160: }
1.5 schwarze 2161:
2162: /* If the parent has false as its rule, then so do we. */
2163:
1.71 schwarze 2164: if (r->last->parent && !r->last->parent->rule)
2165: r->last->rule = 0;
1.5 schwarze 2166:
2167: /*
1.46 schwarze 2168: * Determine scope.
2169: * If there is nothing on the line after the conditional,
2170: * not even whitespace, use next-line scope.
1.5 schwarze 2171: */
1.2 schwarze 2172:
1.110 schwarze 2173: if (buf->buf[pos] == '\0') {
1.46 schwarze 2174: r->last->endspan = 2;
2175: goto out;
2176: }
2177:
1.110 schwarze 2178: while (buf->buf[pos] == ' ')
1.46 schwarze 2179: pos++;
2180:
2181: /* An opening brace requests multiline scope. */
1.2 schwarze 2182:
1.110 schwarze 2183: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2184: r->last->endspan = -1;
2185: pos += 2;
1.144 schwarze 2186: while (buf->buf[pos] == ' ')
2187: pos++;
1.46 schwarze 2188: goto out;
1.80 schwarze 2189: }
1.2 schwarze 2190:
2191: /*
1.46 schwarze 2192: * Anything else following the conditional causes
2193: * single-line scope. Warn if the scope contains
2194: * nothing but trailing whitespace.
1.2 schwarze 2195: */
2196:
1.110 schwarze 2197: if (buf->buf[pos] == '\0')
1.89 schwarze 2198: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2199: ln, ppos, roff_name[tok]);
1.2 schwarze 2200:
1.46 schwarze 2201: r->last->endspan = 1;
1.1 schwarze 2202:
1.46 schwarze 2203: out:
1.2 schwarze 2204: *offs = pos;
1.149 schwarze 2205: return ROFF_RERUN;
1.1 schwarze 2206: }
2207:
1.2 schwarze 2208: static enum rofferr
1.7 schwarze 2209: roff_ds(ROFF_ARGS)
2210: {
1.85 schwarze 2211: char *string;
2212: const char *name;
2213: size_t namesz;
1.10 schwarze 2214:
1.123 schwarze 2215: /* Ignore groff compatibility mode for now. */
2216:
2217: if (tok == ROFF_ds1)
2218: tok = ROFF_ds;
2219: else if (tok == ROFF_as1)
2220: tok = ROFF_as;
2221:
1.10 schwarze 2222: /*
1.85 schwarze 2223: * The first word is the name of the string.
2224: * If it is empty or terminated by an escape sequence,
2225: * abort the `ds' request without defining anything.
1.10 schwarze 2226: */
1.7 schwarze 2227:
1.110 schwarze 2228: name = string = buf->buf + pos;
2229: if (*name == '\0')
1.149 schwarze 2230: return ROFF_IGN;
1.7 schwarze 2231:
1.85 schwarze 2232: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2233: if (name[namesz] == '\\')
1.149 schwarze 2234: return ROFF_IGN;
1.85 schwarze 2235:
2236: /* Read past the initial double-quote, if any. */
1.110 schwarze 2237: if (*string == '"')
1.7 schwarze 2238: string++;
2239:
1.10 schwarze 2240: /* The rest is the value. */
1.85 schwarze 2241: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2242: ROFF_as == tok);
1.149 schwarze 2243: return ROFF_IGN;
1.7 schwarze 2244: }
2245:
1.77 schwarze 2246: /*
2247: * Parse a single operator, one or two characters long.
2248: * If the operator is recognized, return success and advance the
2249: * parse point, else return failure and let the parse point unchanged.
2250: */
2251: static int
2252: roff_getop(const char *v, int *pos, char *res)
2253: {
2254:
2255: *res = v[*pos];
2256:
2257: switch (*res) {
1.80 schwarze 2258: case '+':
2259: case '-':
2260: case '*':
2261: case '/':
2262: case '%':
2263: case '&':
2264: case ':':
1.77 schwarze 2265: break;
2266: case '<':
2267: switch (v[*pos + 1]) {
1.80 schwarze 2268: case '=':
1.77 schwarze 2269: *res = 'l';
2270: (*pos)++;
2271: break;
1.80 schwarze 2272: case '>':
1.77 schwarze 2273: *res = '!';
2274: (*pos)++;
2275: break;
1.80 schwarze 2276: case '?':
1.77 schwarze 2277: *res = 'i';
2278: (*pos)++;
2279: break;
2280: default:
2281: break;
2282: }
2283: break;
2284: case '>':
2285: switch (v[*pos + 1]) {
1.80 schwarze 2286: case '=':
1.77 schwarze 2287: *res = 'g';
2288: (*pos)++;
2289: break;
1.80 schwarze 2290: case '?':
1.77 schwarze 2291: *res = 'a';
2292: (*pos)++;
2293: break;
2294: default:
2295: break;
2296: }
2297: break;
2298: case '=':
2299: if ('=' == v[*pos + 1])
2300: (*pos)++;
2301: break;
2302: default:
1.149 schwarze 2303: return 0;
1.77 schwarze 2304: }
2305: (*pos)++;
2306:
1.149 schwarze 2307: return *res;
1.77 schwarze 2308: }
2309:
2310: /*
2311: * Evaluate either a parenthesized numeric expression
2312: * or a single signed integer number.
2313: */
2314: static int
1.106 schwarze 2315: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2316: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2317: {
2318:
2319: if ('(' != v[*pos])
1.149 schwarze 2320: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2321:
2322: (*pos)++;
1.133 schwarze 2323: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2324: return 0;
1.77 schwarze 2325:
1.79 schwarze 2326: /*
2327: * Omission of the closing parenthesis
2328: * is an error in validation mode,
2329: * but ignored in evaluation mode.
2330: */
2331:
1.77 schwarze 2332: if (')' == v[*pos])
2333: (*pos)++;
1.79 schwarze 2334: else if (NULL == res)
1.149 schwarze 2335: return 0;
1.77 schwarze 2336:
1.149 schwarze 2337: return 1;
1.77 schwarze 2338: }
2339:
2340: /*
2341: * Evaluate a complete numeric expression.
2342: * Proceed left to right, there is no concept of precedence.
2343: */
2344: static int
1.106 schwarze 2345: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2346: int *pos, int *res, int flags)
1.77 schwarze 2347: {
2348: int mypos, operand2;
2349: char operator;
2350:
2351: if (NULL == pos) {
2352: mypos = 0;
2353: pos = &mypos;
2354: }
2355:
1.133 schwarze 2356: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2357: while (isspace((unsigned char)v[*pos]))
2358: (*pos)++;
2359:
1.133 schwarze 2360: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2361: return 0;
1.77 schwarze 2362:
2363: while (1) {
1.133 schwarze 2364: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2365: while (isspace((unsigned char)v[*pos]))
2366: (*pos)++;
2367:
2368: if ( ! roff_getop(v, pos, &operator))
2369: break;
2370:
1.133 schwarze 2371: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2372: while (isspace((unsigned char)v[*pos]))
2373: (*pos)++;
2374:
1.133 schwarze 2375: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2376: return 0;
1.77 schwarze 2377:
1.133 schwarze 2378: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2379: while (isspace((unsigned char)v[*pos]))
2380: (*pos)++;
1.79 schwarze 2381:
2382: if (NULL == res)
2383: continue;
1.77 schwarze 2384:
2385: switch (operator) {
1.80 schwarze 2386: case '+':
1.77 schwarze 2387: *res += operand2;
2388: break;
1.80 schwarze 2389: case '-':
1.77 schwarze 2390: *res -= operand2;
2391: break;
1.80 schwarze 2392: case '*':
1.77 schwarze 2393: *res *= operand2;
2394: break;
1.80 schwarze 2395: case '/':
1.116 schwarze 2396: if (operand2 == 0) {
1.106 schwarze 2397: mandoc_msg(MANDOCERR_DIVZERO,
2398: r->parse, ln, *pos, v);
2399: *res = 0;
2400: break;
2401: }
1.77 schwarze 2402: *res /= operand2;
2403: break;
1.80 schwarze 2404: case '%':
1.116 schwarze 2405: if (operand2 == 0) {
2406: mandoc_msg(MANDOCERR_DIVZERO,
2407: r->parse, ln, *pos, v);
2408: *res = 0;
2409: break;
2410: }
1.77 schwarze 2411: *res %= operand2;
2412: break;
1.80 schwarze 2413: case '<':
1.77 schwarze 2414: *res = *res < operand2;
2415: break;
1.80 schwarze 2416: case '>':
1.77 schwarze 2417: *res = *res > operand2;
2418: break;
1.80 schwarze 2419: case 'l':
1.77 schwarze 2420: *res = *res <= operand2;
2421: break;
1.80 schwarze 2422: case 'g':
1.77 schwarze 2423: *res = *res >= operand2;
2424: break;
1.80 schwarze 2425: case '=':
1.77 schwarze 2426: *res = *res == operand2;
2427: break;
1.80 schwarze 2428: case '!':
1.77 schwarze 2429: *res = *res != operand2;
2430: break;
1.80 schwarze 2431: case '&':
1.77 schwarze 2432: *res = *res && operand2;
2433: break;
1.80 schwarze 2434: case ':':
1.77 schwarze 2435: *res = *res || operand2;
2436: break;
1.80 schwarze 2437: case 'i':
1.77 schwarze 2438: if (operand2 < *res)
2439: *res = operand2;
2440: break;
1.80 schwarze 2441: case 'a':
1.77 schwarze 2442: if (operand2 > *res)
2443: *res = operand2;
2444: break;
2445: default:
2446: abort();
2447: }
2448: }
1.149 schwarze 2449: return 1;
1.77 schwarze 2450: }
2451:
1.138 schwarze 2452: /* --- register management ------------------------------------------------ */
2453:
1.52 schwarze 2454: void
1.60 schwarze 2455: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2456: {
1.52 schwarze 2457: struct roffreg *reg;
2458:
2459: /* Search for an existing register with the same name. */
2460: reg = r->regtab;
2461:
2462: while (reg && strcmp(name, reg->key.p))
2463: reg = reg->next;
1.41 schwarze 2464:
1.52 schwarze 2465: if (NULL == reg) {
2466: /* Create a new register. */
2467: reg = mandoc_malloc(sizeof(struct roffreg));
2468: reg->key.p = mandoc_strdup(name);
2469: reg->key.sz = strlen(name);
1.60 schwarze 2470: reg->val = 0;
1.52 schwarze 2471: reg->next = r->regtab;
2472: r->regtab = reg;
2473: }
2474:
1.60 schwarze 2475: if ('+' == sign)
2476: reg->val += val;
2477: else if ('-' == sign)
2478: reg->val -= val;
2479: else
2480: reg->val = val;
1.41 schwarze 2481: }
2482:
1.65 schwarze 2483: /*
2484: * Handle some predefined read-only number registers.
2485: * For now, return -1 if the requested register is not predefined;
2486: * in case a predefined read-only register having the value -1
2487: * were to turn up, another special value would have to be chosen.
2488: */
2489: static int
1.145 schwarze 2490: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2491: {
2492:
2493: switch (*name) {
1.145 schwarze 2494: case '$': /* Number of arguments of the last macro evaluated. */
1.149 schwarze 2495: return r->argc;
1.80 schwarze 2496: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2497: return 0;
1.80 schwarze 2498: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2499: return 1;
1.80 schwarze 2500: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2501: return 24;
1.80 schwarze 2502: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2503: return 0;
1.80 schwarze 2504: case 'T': /* Some output device is always defined. */
1.149 schwarze 2505: return 1;
1.80 schwarze 2506: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2507: return 40;
1.65 schwarze 2508: default:
1.149 schwarze 2509: return -1;
1.65 schwarze 2510: }
2511: }
2512:
1.53 schwarze 2513: int
1.52 schwarze 2514: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2515: {
1.52 schwarze 2516: struct roffreg *reg;
1.65 schwarze 2517: int val;
2518:
2519: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.145 schwarze 2520: val = roff_getregro(r, name + 1);
1.65 schwarze 2521: if (-1 != val)
1.149 schwarze 2522: return val;
1.65 schwarze 2523: }
1.52 schwarze 2524:
2525: for (reg = r->regtab; reg; reg = reg->next)
2526: if (0 == strcmp(name, reg->key.p))
1.149 schwarze 2527: return reg->val;
1.53 schwarze 2528:
1.149 schwarze 2529: return 0;
1.53 schwarze 2530: }
2531:
2532: static int
2533: roff_getregn(const struct roff *r, const char *name, size_t len)
2534: {
2535: struct roffreg *reg;
1.65 schwarze 2536: int val;
2537:
2538: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2539: val = roff_getregro(r, name + 1);
1.65 schwarze 2540: if (-1 != val)
1.149 schwarze 2541: return val;
1.65 schwarze 2542: }
1.53 schwarze 2543:
2544: for (reg = r->regtab; reg; reg = reg->next)
2545: if (len == reg->key.sz &&
2546: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2547: return reg->val;
1.143 schwarze 2548:
1.149 schwarze 2549: return 0;
1.143 schwarze 2550: }
2551:
2552: static int
2553: roff_hasregn(const struct roff *r, const char *name, size_t len)
2554: {
2555: struct roffreg *reg;
2556: int val;
2557:
2558: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2559: val = roff_getregro(r, name + 1);
1.143 schwarze 2560: if (-1 != val)
1.149 schwarze 2561: return 1;
1.143 schwarze 2562: }
2563:
2564: for (reg = r->regtab; reg; reg = reg->next)
2565: if (len == reg->key.sz &&
2566: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2567: return 1;
1.41 schwarze 2568:
1.149 schwarze 2569: return 0;
1.41 schwarze 2570: }
2571:
1.52 schwarze 2572: static void
2573: roff_freereg(struct roffreg *reg)
1.41 schwarze 2574: {
1.52 schwarze 2575: struct roffreg *old_reg;
1.41 schwarze 2576:
1.52 schwarze 2577: while (NULL != reg) {
2578: free(reg->key.p);
2579: old_reg = reg;
2580: reg = reg->next;
2581: free(old_reg);
2582: }
1.41 schwarze 2583: }
1.7 schwarze 2584:
2585: static enum rofferr
1.6 schwarze 2586: roff_nr(ROFF_ARGS)
1.1 schwarze 2587: {
1.85 schwarze 2588: char *key, *val;
2589: size_t keysz;
1.37 schwarze 2590: int iv;
1.60 schwarze 2591: char sign;
1.6 schwarze 2592:
1.110 schwarze 2593: key = val = buf->buf + pos;
2594: if (*key == '\0')
1.149 schwarze 2595: return ROFF_IGN;
1.85 schwarze 2596:
2597: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2598: if (key[keysz] == '\\')
1.149 schwarze 2599: return ROFF_IGN;
1.85 schwarze 2600: key[keysz] = '\0';
1.6 schwarze 2601:
1.60 schwarze 2602: sign = *val;
1.110 schwarze 2603: if (sign == '+' || sign == '-')
1.60 schwarze 2604: val++;
2605:
1.133 schwarze 2606: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2607: roff_setreg(r, key, iv, sign);
1.1 schwarze 2608:
1.149 schwarze 2609: return ROFF_IGN;
1.76 schwarze 2610: }
2611:
2612: static enum rofferr
2613: roff_rr(ROFF_ARGS)
2614: {
2615: struct roffreg *reg, **prev;
1.85 schwarze 2616: char *name, *cp;
2617: size_t namesz;
1.76 schwarze 2618:
1.110 schwarze 2619: name = cp = buf->buf + pos;
2620: if (*name == '\0')
1.149 schwarze 2621: return ROFF_IGN;
1.85 schwarze 2622: namesz = roff_getname(r, &cp, ln, pos);
2623: name[namesz] = '\0';
1.76 schwarze 2624:
2625: prev = &r->regtab;
2626: while (1) {
2627: reg = *prev;
1.110 schwarze 2628: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2629: break;
2630: prev = ®->next;
2631: }
1.110 schwarze 2632: if (reg != NULL) {
1.76 schwarze 2633: *prev = reg->next;
2634: free(reg->key.p);
2635: free(reg);
2636: }
1.149 schwarze 2637: return ROFF_IGN;
1.29 schwarze 2638: }
2639:
1.138 schwarze 2640: /* --- handler functions for roff requests -------------------------------- */
2641:
1.29 schwarze 2642: static enum rofferr
2643: roff_rm(ROFF_ARGS)
2644: {
2645: const char *name;
2646: char *cp;
1.85 schwarze 2647: size_t namesz;
1.29 schwarze 2648:
1.110 schwarze 2649: cp = buf->buf + pos;
2650: while (*cp != '\0') {
1.85 schwarze 2651: name = cp;
1.110 schwarze 2652: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2653: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.110 schwarze 2654: if (name[namesz] == '\\')
1.85 schwarze 2655: break;
1.29 schwarze 2656: }
1.149 schwarze 2657: return ROFF_IGN;
1.51 schwarze 2658: }
2659:
2660: static enum rofferr
2661: roff_it(ROFF_ARGS)
2662: {
2663: int iv;
2664:
2665: /* Parse the number of lines. */
1.133 schwarze 2666:
2667: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2668: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2669: ln, ppos, buf->buf + 1);
1.149 schwarze 2670: return ROFF_IGN;
1.51 schwarze 2671: }
2672:
1.134 schwarze 2673: while (isspace((unsigned char)buf->buf[pos]))
2674: pos++;
2675:
2676: /*
2677: * Arm the input line trap.
2678: * Special-casing "an-trap" is an ugly workaround to cope
2679: * with DocBook stupidly fiddling with man(7) internals.
2680: */
1.133 schwarze 2681:
1.51 schwarze 2682: roffit_lines = iv;
1.134 schwarze 2683: roffit_macro = mandoc_strdup(iv != 1 ||
2684: strcmp(buf->buf + pos, "an-trap") ?
2685: buf->buf + pos : "br");
1.149 schwarze 2686: return ROFF_IGN;
1.47 schwarze 2687: }
2688:
2689: static enum rofferr
2690: roff_Dd(ROFF_ARGS)
2691: {
2692: const char *const *cp;
2693:
1.99 schwarze 2694: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.47 schwarze 2695: for (cp = __mdoc_reserved; *cp; cp++)
2696: roff_setstr(r, *cp, NULL, 0);
2697:
1.99 schwarze 2698: if (r->format == 0)
2699: r->format = MPARSE_MDOC;
2700:
1.149 schwarze 2701: return ROFF_CONT;
1.47 schwarze 2702: }
2703:
2704: static enum rofferr
2705: roff_TH(ROFF_ARGS)
2706: {
2707: const char *const *cp;
2708:
1.99 schwarze 2709: if ((r->options & MPARSE_QUICK) == 0)
1.47 schwarze 2710: for (cp = __man_reserved; *cp; cp++)
2711: roff_setstr(r, *cp, NULL, 0);
2712:
1.99 schwarze 2713: if (r->format == 0)
2714: r->format = MPARSE_MAN;
2715:
1.149 schwarze 2716: return ROFF_CONT;
1.14 schwarze 2717: }
2718:
2719: static enum rofferr
1.27 schwarze 2720: roff_TE(ROFF_ARGS)
2721: {
2722:
2723: if (NULL == r->tbl)
1.94 schwarze 2724: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2725: ln, ppos, "TE");
1.130 schwarze 2726: else if ( ! tbl_end(&r->tbl)) {
2727: free(buf->buf);
2728: buf->buf = mandoc_strdup(".sp");
2729: buf->sz = 4;
1.149 schwarze 2730: return ROFF_REPARSE;
1.130 schwarze 2731: }
1.149 schwarze 2732: return ROFF_IGN;
1.27 schwarze 2733: }
2734:
2735: static enum rofferr
2736: roff_T_(ROFF_ARGS)
2737: {
2738:
2739: if (NULL == r->tbl)
1.94 schwarze 2740: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2741: ln, ppos, "T&");
1.27 schwarze 2742: else
1.168 schwarze 2743: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 2744:
1.149 schwarze 2745: return ROFF_IGN;
1.27 schwarze 2746: }
2747:
1.102 schwarze 2748: /*
2749: * Handle in-line equation delimiters.
2750: */
2751: static enum rofferr
1.110 schwarze 2752: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2753: {
1.105 schwarze 2754: char *cp1, *cp2;
2755: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2756:
1.102 schwarze 2757: /*
2758: * Outside equations, look for an opening delimiter.
2759: * If we are inside an equation, we already know it is
2760: * in-line, or this function wouldn't have been called;
2761: * so look for a closing delimiter.
2762: */
2763:
1.110 schwarze 2764: cp1 = buf->buf + pos;
1.102 schwarze 2765: cp2 = strchr(cp1, r->eqn == NULL ?
2766: r->last_eqn->odelim : r->last_eqn->cdelim);
2767: if (cp2 == NULL)
1.149 schwarze 2768: return ROFF_CONT;
1.102 schwarze 2769:
1.105 schwarze 2770: *cp2++ = '\0';
2771: bef_pr = bef_nl = aft_nl = aft_pr = "";
2772:
2773: /* Handle preceding text, protecting whitespace. */
2774:
1.110 schwarze 2775: if (*buf->buf != '\0') {
1.105 schwarze 2776: if (r->eqn == NULL)
2777: bef_pr = "\\&";
2778: bef_nl = "\n";
2779: }
2780:
2781: /*
2782: * Prepare replacing the delimiter with an equation macro
2783: * and drop leading white space from the equation.
2784: */
1.102 schwarze 2785:
1.105 schwarze 2786: if (r->eqn == NULL) {
2787: while (*cp2 == ' ')
2788: cp2++;
2789: mac = ".EQ";
2790: } else
2791: mac = ".EN";
2792:
2793: /* Handle following text, protecting whitespace. */
2794:
2795: if (*cp2 != '\0') {
2796: aft_nl = "\n";
2797: if (r->eqn != NULL)
2798: aft_pr = "\\&";
2799: }
2800:
2801: /* Do the actual replacement. */
2802:
1.110 schwarze 2803: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2804: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2805: free(buf->buf);
2806: buf->buf = cp1;
1.102 schwarze 2807:
2808: /* Toggle the in-line state of the eqn subsystem. */
2809:
2810: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2811: return ROFF_REPARSE;
1.41 schwarze 2812: }
2813:
1.107 schwarze 2814: static enum rofferr
2815: roff_EQ(ROFF_ARGS)
1.32 schwarze 2816: {
1.41 schwarze 2817: struct eqn_node *e;
1.32 schwarze 2818:
1.110 schwarze 2819: assert(r->eqn == NULL);
1.107 schwarze 2820: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2821:
1.102 schwarze 2822: if (r->last_eqn) {
1.32 schwarze 2823: r->last_eqn->next = e;
1.102 schwarze 2824: e->delim = r->last_eqn->delim;
2825: e->odelim = r->last_eqn->odelim;
2826: e->cdelim = r->last_eqn->cdelim;
2827: } else
1.32 schwarze 2828: r->first_eqn = r->last_eqn = e;
2829:
2830: r->eqn = r->last_eqn = e;
1.41 schwarze 2831:
1.110 schwarze 2832: if (buf->buf[pos] != '\0')
1.107 schwarze 2833: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2834: ".EQ %s", buf->buf + pos);
1.41 schwarze 2835:
1.149 schwarze 2836: return ROFF_IGN;
1.32 schwarze 2837: }
2838:
2839: static enum rofferr
2840: roff_EN(ROFF_ARGS)
2841: {
2842:
1.94 schwarze 2843: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.149 schwarze 2844: return ROFF_IGN;
1.32 schwarze 2845: }
2846:
2847: static enum rofferr
1.27 schwarze 2848: roff_TS(ROFF_ARGS)
2849: {
1.49 schwarze 2850: struct tbl_node *tbl;
1.27 schwarze 2851:
2852: if (r->tbl) {
1.94 schwarze 2853: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2854: ln, ppos, "TS breaks TS");
1.41 schwarze 2855: tbl_end(&r->tbl);
1.27 schwarze 2856: }
2857:
1.49 schwarze 2858: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2859:
2860: if (r->last_tbl)
1.49 schwarze 2861: r->last_tbl->next = tbl;
1.27 schwarze 2862: else
1.49 schwarze 2863: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2864:
1.49 schwarze 2865: r->tbl = r->last_tbl = tbl;
1.169 schwarze 2866: return ROFF_IGN;
2867: }
2868:
2869: static enum rofferr
2870: roff_onearg(ROFF_ARGS)
2871: {
2872: struct roff_node *n;
2873: char *cp;
1.177 schwarze 2874: int npos;
1.169 schwarze 2875:
1.174 schwarze 2876: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
2877: (tok == ROFF_sp || tok == ROFF_ti))
2878: man_breakscope(r->man, tok);
2879:
1.177 schwarze 2880: if (tok == ROFF_ce && roffce_node != NULL) {
2881: r->man->last = roffce_node;
2882: r->man->next = ROFF_NEXT_SIBLING;
2883: }
2884:
1.169 schwarze 2885: roff_elem_alloc(r->man, ln, ppos, tok);
2886: n = r->man->last;
2887:
2888: cp = buf->buf + pos;
2889: if (*cp != '\0') {
2890: while (*cp != '\0' && *cp != ' ')
2891: cp++;
2892: while (*cp == ' ')
2893: *cp++ = '\0';
2894: if (*cp != '\0')
2895: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2896: r->parse, ln, cp - buf->buf,
2897: "%s ... %s", roff_name[tok], cp);
2898: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 2899: }
2900:
1.177 schwarze 2901: if (tok == ROFF_ce) {
2902: if (r->man->last->tok == ROFF_ce) {
2903: roff_word_alloc(r->man, ln, pos, "1");
2904: r->man->last->flags |= NODE_NOSRC;
2905: }
2906: npos = 0;
2907: if (roff_evalnum(r, ln, r->man->last->string, &npos,
2908: &roffce_lines, 0) == 0) {
2909: mandoc_vmsg(MANDOCERR_CE_NONUM,
2910: r->parse, ln, pos, "ce %s", buf->buf + pos);
2911: roffce_lines = 1;
2912: }
2913: if (roffce_lines < 1) {
2914: r->man->last = r->man->last->parent;
2915: roffce_node = NULL;
2916: roffce_lines = 0;
2917: } else
2918: roffce_node = r->man->last->parent;
2919: } else {
2920: n->flags |= NODE_VALID | NODE_ENDED;
2921: r->man->last = n;
2922: }
2923: n->flags |= NODE_LINE;
1.172 schwarze 2924: r->man->next = ROFF_NEXT_SIBLING;
2925: return ROFF_IGN;
2926: }
2927:
2928: static enum rofferr
2929: roff_manyarg(ROFF_ARGS)
2930: {
2931: struct roff_node *n;
2932: char *sp, *ep;
2933:
2934: roff_elem_alloc(r->man, ln, ppos, tok);
2935: n = r->man->last;
2936:
2937: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
2938: while (*ep != '\0' && *ep != ' ')
2939: ep++;
2940: while (*ep == ' ')
2941: *ep++ = '\0';
2942: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 2943: }
2944:
2945: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2946: r->man->last = n;
2947: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 2948: return ROFF_IGN;
1.123 schwarze 2949: }
2950:
2951: static enum rofferr
1.168 schwarze 2952: roff_br(ROFF_ARGS)
1.123 schwarze 2953: {
1.174 schwarze 2954: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
2955: man_breakscope(r->man, ROFF_br);
1.168 schwarze 2956: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
2957: if (buf->buf[pos] != '\0')
2958: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2959: "%s %s", roff_name[tok], buf->buf + pos);
2960: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2961: r->man->next = ROFF_NEXT_SIBLING;
2962: return ROFF_IGN;
1.27 schwarze 2963: }
2964:
2965: static enum rofferr
1.48 schwarze 2966: roff_cc(ROFF_ARGS)
2967: {
2968: const char *p;
2969:
1.110 schwarze 2970: p = buf->buf + pos;
1.48 schwarze 2971:
1.110 schwarze 2972: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 2973: r->control = '\0';
1.48 schwarze 2974:
1.110 schwarze 2975: if (*p != '\0')
1.132 schwarze 2976: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2977: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 2978:
1.149 schwarze 2979: return ROFF_IGN;
1.48 schwarze 2980: }
2981:
2982: static enum rofferr
1.175 schwarze 2983: roff_ec(ROFF_ARGS)
2984: {
2985: const char *p;
2986:
2987: p = buf->buf + pos;
2988: if (*p == '\0')
2989: r->escape = '\\';
2990: else {
2991: r->escape = *p;
2992: if (*++p != '\0')
2993: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2994: ln, p - buf->buf, "ec ... %s", p);
2995: }
2996: return ROFF_IGN;
2997: }
2998:
2999: static enum rofferr
3000: roff_eo(ROFF_ARGS)
3001: {
3002: r->escape = '\0';
3003: if (buf->buf[pos] != '\0')
3004: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3005: ln, pos, "eo %s", buf->buf + pos);
3006: return ROFF_IGN;
3007: }
3008:
3009: static enum rofferr
1.42 schwarze 3010: roff_tr(ROFF_ARGS)
3011: {
3012: const char *p, *first, *second;
3013: size_t fsz, ssz;
3014: enum mandoc_esc esc;
3015:
1.110 schwarze 3016: p = buf->buf + pos;
1.42 schwarze 3017:
1.110 schwarze 3018: if (*p == '\0') {
1.132 schwarze 3019: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 3020: return ROFF_IGN;
1.42 schwarze 3021: }
3022:
1.110 schwarze 3023: while (*p != '\0') {
1.42 schwarze 3024: fsz = ssz = 1;
3025:
3026: first = p++;
1.110 schwarze 3027: if (*first == '\\') {
1.42 schwarze 3028: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3029: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3030: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3031: ln, (int)(p - buf->buf), first);
1.149 schwarze 3032: return ROFF_IGN;
1.42 schwarze 3033: }
3034: fsz = (size_t)(p - first);
3035: }
3036:
3037: second = p++;
1.110 schwarze 3038: if (*second == '\\') {
1.42 schwarze 3039: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3040: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3041: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3042: ln, (int)(p - buf->buf), second);
1.149 schwarze 3043: return ROFF_IGN;
1.42 schwarze 3044: }
3045: ssz = (size_t)(p - second);
1.110 schwarze 3046: } else if (*second == '\0') {
1.132 schwarze 3047: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3048: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3049: second = " ";
3050: p--;
3051: }
3052:
3053: if (fsz > 1) {
1.80 schwarze 3054: roff_setstrn(&r->xmbtab, first, fsz,
3055: second, ssz, 0);
1.42 schwarze 3056: continue;
3057: }
3058:
1.110 schwarze 3059: if (r->xtab == NULL)
1.80 schwarze 3060: r->xtab = mandoc_calloc(128,
3061: sizeof(struct roffstr));
1.42 schwarze 3062:
3063: free(r->xtab[(int)*first].p);
3064: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3065: r->xtab[(int)*first].sz = ssz;
3066: }
3067:
1.149 schwarze 3068: return ROFF_IGN;
1.42 schwarze 3069: }
3070:
3071: static enum rofferr
1.178 schwarze 3072: roff_rn(ROFF_ARGS)
3073: {
3074: const char *value;
3075: char *oldn, *newn, *end;
3076: size_t oldsz, newsz;
3077:
3078: oldn = newn = buf->buf + pos;
3079: if (*oldn == '\0')
3080: return ROFF_IGN;
3081:
3082: oldsz = roff_getname(r, &newn, ln, pos);
3083: if (oldn[oldsz] == '\\' || *newn == '\0')
3084: return ROFF_IGN;
3085:
3086: end = newn;
3087: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3088: if (newsz == 0)
3089: return ROFF_IGN;
3090:
3091: /*
3092: * Rename a user-defined macro bearing the old name,
3093: * overriding an existing renamed high-level macro
3094: * bearing the new name, if that exists.
3095: */
3096:
3097: if ((value = roff_getstrn(r, oldn, oldsz)) != NULL) {
3098: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3099: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3100: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3101: return ROFF_IGN;
3102: }
3103:
3104: /*
3105: * Rename a high-level macro bearing the old name,
3106: * either renaming it a second time if it was already
3107: * renamed before, or renaming it for the first time.
3108: * In both cases, override an existing user-defined
3109: * macro bearing the new name, if that exists.
3110: */
3111:
3112: if ((value = roff_getrenn(r, oldn, oldsz)) != NULL) {
3113: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3114: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
3115: } else
3116: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
3117: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3118: return ROFF_IGN;
3119: }
3120:
3121: static enum rofferr
1.14 schwarze 3122: roff_so(ROFF_ARGS)
3123: {
1.121 schwarze 3124: char *name, *cp;
1.15 schwarze 3125:
1.110 schwarze 3126: name = buf->buf + pos;
1.97 schwarze 3127: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3128:
1.22 schwarze 3129: /*
3130: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3131: * opening anything that's not in our cwd or anything beneath
3132: * it. Thus, explicitly disallow traversing up the file-system
3133: * or using absolute paths.
3134: */
3135:
1.110 schwarze 3136: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3137: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3138: ".so %s", name);
1.121 schwarze 3139: buf->sz = mandoc_asprintf(&cp,
3140: ".sp\nSee the file %s.\n.sp", name) + 1;
3141: free(buf->buf);
3142: buf->buf = cp;
3143: *offs = 0;
1.149 schwarze 3144: return ROFF_REPARSE;
1.14 schwarze 3145: }
3146:
3147: *offs = pos;
1.149 schwarze 3148: return ROFF_SO;
1.7 schwarze 3149: }
3150:
1.138 schwarze 3151: /* --- user defined strings and macros ------------------------------------ */
3152:
1.16 schwarze 3153: static enum rofferr
3154: roff_userdef(ROFF_ARGS)
1.12 schwarze 3155: {
1.135 schwarze 3156: const char *arg[9], *ap;
1.16 schwarze 3157: char *cp, *n1, *n2;
1.164 schwarze 3158: int expand_count, i, ib, ie;
1.135 schwarze 3159: size_t asz, rsz;
1.12 schwarze 3160:
1.16 schwarze 3161: /*
3162: * Collect pointers to macro argument strings
1.61 schwarze 3163: * and NUL-terminate them.
1.16 schwarze 3164: */
1.135 schwarze 3165:
1.145 schwarze 3166: r->argc = 0;
1.110 schwarze 3167: cp = buf->buf + pos;
1.145 schwarze 3168: for (i = 0; i < 9; i++) {
3169: if (*cp == '\0')
3170: arg[i] = "";
3171: else {
3172: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3173: r->argc = i + 1;
3174: }
3175: }
1.16 schwarze 3176:
3177: /*
3178: * Expand macro arguments.
1.12 schwarze 3179: */
1.135 schwarze 3180:
3181: buf->sz = strlen(r->current_string) + 1;
1.164 schwarze 3182: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.135 schwarze 3183: memcpy(n1, r->current_string, buf->sz);
1.164 schwarze 3184: expand_count = 0;
1.135 schwarze 3185: while (*cp != '\0') {
3186:
3187: /* Scan ahead for the next argument invocation. */
3188:
3189: if (*cp++ != '\\')
3190: continue;
3191: if (*cp++ != '$')
3192: continue;
1.146 schwarze 3193: if (*cp == '*') { /* \\$* inserts all arguments */
3194: ib = 0;
3195: ie = r->argc - 1;
3196: } else { /* \\$1 .. \\$9 insert one argument */
3197: ib = ie = *cp - '1';
3198: if (ib < 0 || ib > 8)
3199: continue;
3200: }
1.135 schwarze 3201: cp -= 2;
1.164 schwarze 3202:
3203: /*
3204: * Prevent infinite recursion.
3205: */
3206:
3207: if (cp >= n2)
3208: expand_count = 1;
3209: else if (++expand_count > EXPAND_LIMIT) {
3210: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3211: ln, (int)(cp - n1), NULL);
1.165 schwarze 3212: free(buf->buf);
3213: buf->buf = n1;
1.164 schwarze 3214: return ROFF_IGN;
3215: }
1.135 schwarze 3216:
3217: /*
3218: * Determine the size of the expanded argument,
3219: * taking escaping of quotes into account.
3220: */
3221:
1.146 schwarze 3222: asz = ie > ib ? ie - ib : 0; /* for blanks */
3223: for (i = ib; i <= ie; i++) {
3224: for (ap = arg[i]; *ap != '\0'; ap++) {
3225: asz++;
3226: if (*ap == '"')
3227: asz += 3;
3228: }
1.135 schwarze 3229: }
3230: if (asz != 3) {
3231:
3232: /*
3233: * Determine the size of the rest of the
3234: * unexpanded macro, including the NUL.
3235: */
3236:
3237: rsz = buf->sz - (cp - n1) - 3;
3238:
3239: /*
3240: * When shrinking, move before
3241: * releasing the storage.
3242: */
3243:
3244: if (asz < 3)
3245: memmove(cp + asz, cp + 3, rsz);
3246:
3247: /*
3248: * Resize the storage for the macro
3249: * and readjust the parse pointer.
3250: */
3251:
3252: buf->sz += asz - 3;
3253: n2 = mandoc_realloc(n1, buf->sz);
3254: cp = n2 + (cp - n1);
3255: n1 = n2;
3256:
3257: /*
3258: * When growing, make room
3259: * for the expanded argument.
3260: */
3261:
3262: if (asz > 3)
3263: memmove(cp + asz, cp + 3, rsz);
3264: }
3265:
3266: /* Copy the expanded argument, escaping quotes. */
3267:
3268: n2 = cp;
1.146 schwarze 3269: for (i = ib; i <= ie; i++) {
3270: for (ap = arg[i]; *ap != '\0'; ap++) {
3271: if (*ap == '"') {
3272: memcpy(n2, "\\(dq", 4);
3273: n2 += 4;
3274: } else
3275: *n2++ = *ap;
3276: }
3277: if (i < ie)
3278: *n2++ = ' ';
1.16 schwarze 3279: }
1.12 schwarze 3280: }
3281:
1.16 schwarze 3282: /*
3283: * Replace the macro invocation
3284: * by the expanded macro.
3285: */
1.135 schwarze 3286:
1.110 schwarze 3287: free(buf->buf);
3288: buf->buf = n1;
1.120 schwarze 3289: *offs = 0;
1.16 schwarze 3290:
1.149 schwarze 3291: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3292: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3293: }
1.28 schwarze 3294:
1.178 schwarze 3295: /*
3296: * Calling a high-level macro that was renamed with .rn.
3297: * r->current_string has already been set up by roff_parse().
3298: */
3299: static enum rofferr
3300: roff_renamed(ROFF_ARGS)
3301: {
3302: char *nbuf;
3303:
3304: buf->sz = mandoc_asprintf(&nbuf, ".%s %s", r->current_string,
3305: buf->buf + pos) + 1;
3306: free(buf->buf);
3307: buf->buf = nbuf;
3308: return ROFF_CONT;
3309: }
3310:
1.85 schwarze 3311: static size_t
1.28 schwarze 3312: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3313: {
3314: char *name, *cp;
1.85 schwarze 3315: size_t namesz;
1.28 schwarze 3316:
3317: name = *cpp;
3318: if ('\0' == *name)
1.149 schwarze 3319: return 0;
1.28 schwarze 3320:
1.85 schwarze 3321: /* Read until end of name and terminate it with NUL. */
3322: for (cp = name; 1; cp++) {
3323: if ('\0' == *cp || ' ' == *cp) {
3324: namesz = cp - name;
3325: break;
3326: }
1.28 schwarze 3327: if ('\\' != *cp)
3328: continue;
1.88 schwarze 3329: namesz = cp - name;
3330: if ('{' == cp[1] || '}' == cp[1])
3331: break;
1.28 schwarze 3332: cp++;
3333: if ('\\' == *cp)
3334: continue;
1.97 schwarze 3335: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3336: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3337: mandoc_escape((const char **)&cp, NULL, NULL);
3338: break;
1.28 schwarze 3339: }
3340:
3341: /* Read past spaces. */
3342: while (' ' == *cp)
3343: cp++;
3344:
3345: *cpp = cp;
1.149 schwarze 3346: return namesz;
1.28 schwarze 3347: }
3348:
1.16 schwarze 3349: /*
3350: * Store *string into the user-defined string called *name.
3351: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3352: * append == 0: replace mode
3353: * append == 1: single-line append mode
3354: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3355: */
1.8 schwarze 3356: static void
1.16 schwarze 3357: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3358: int append)
1.7 schwarze 3359: {
1.42 schwarze 3360:
3361: roff_setstrn(&r->strtab, name, strlen(name), string,
1.80 schwarze 3362: string ? strlen(string) : 0, append);
1.42 schwarze 3363: }
3364:
3365: static void
3366: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3367: const char *string, size_t stringsz, int append)
1.42 schwarze 3368: {
3369: struct roffkv *n;
3370: char *c;
3371: int i;
3372: size_t oldch, newch;
1.7 schwarze 3373:
1.16 schwarze 3374: /* Search for an existing string with the same name. */
1.42 schwarze 3375: n = *r;
3376:
1.84 schwarze 3377: while (n && (namesz != n->key.sz ||
3378: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3379: n = n->next;
1.8 schwarze 3380:
3381: if (NULL == n) {
1.16 schwarze 3382: /* Create a new string table entry. */
1.42 schwarze 3383: n = mandoc_malloc(sizeof(struct roffkv));
3384: n->key.p = mandoc_strndup(name, namesz);
3385: n->key.sz = namesz;
3386: n->val.p = NULL;
3387: n->val.sz = 0;
3388: n->next = *r;
3389: *r = n;
1.66 schwarze 3390: } else if (0 == append) {
1.42 schwarze 3391: free(n->val.p);
3392: n->val.p = NULL;
3393: n->val.sz = 0;
1.16 schwarze 3394: }
3395:
3396: if (NULL == string)
3397: return;
3398:
3399: /*
3400: * One additional byte for the '\n' in multiline mode,
3401: * and one for the terminating '\0'.
3402: */
1.66 schwarze 3403: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3404:
3405: if (NULL == n->val.p) {
3406: n->val.p = mandoc_malloc(newch);
3407: *n->val.p = '\0';
1.16 schwarze 3408: oldch = 0;
3409: } else {
1.42 schwarze 3410: oldch = n->val.sz;
3411: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3412: }
3413:
3414: /* Skip existing content in the destination buffer. */
1.42 schwarze 3415: c = n->val.p + (int)oldch;
1.16 schwarze 3416:
3417: /* Append new content to the destination buffer. */
1.42 schwarze 3418: i = 0;
3419: while (i < (int)stringsz) {
1.16 schwarze 3420: /*
3421: * Rudimentary roff copy mode:
3422: * Handle escaped backslashes.
3423: */
1.42 schwarze 3424: if ('\\' == string[i] && '\\' == string[i + 1])
3425: i++;
3426: *c++ = string[i++];
1.16 schwarze 3427: }
1.8 schwarze 3428:
1.16 schwarze 3429: /* Append terminating bytes. */
1.66 schwarze 3430: if (1 < append)
1.16 schwarze 3431: *c++ = '\n';
1.42 schwarze 3432:
1.16 schwarze 3433: *c = '\0';
1.42 schwarze 3434: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3435: }
3436:
1.8 schwarze 3437: static const char *
3438: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.7 schwarze 3439: {
1.42 schwarze 3440: const struct roffkv *n;
1.64 schwarze 3441: int i;
1.7 schwarze 3442:
1.42 schwarze 3443: for (n = r->strtab; n; n = n->next)
1.80 schwarze 3444: if (0 == strncmp(name, n->key.p, len) &&
3445: '\0' == n->key.p[(int)len])
1.149 schwarze 3446: return n->val.p;
1.64 schwarze 3447:
3448: for (i = 0; i < PREDEFS_MAX; i++)
3449: if (0 == strncmp(name, predefs[i].name, len) &&
3450: '\0' == predefs[i].name[(int)len])
1.149 schwarze 3451: return predefs[i].str;
1.178 schwarze 3452:
3453: return NULL;
3454: }
3455:
3456: /*
3457: * Check whether *name is the renamed name of a high-level macro.
3458: * Return the standard name, or NULL if it is not.
3459: */
3460: static const char *
3461: roff_getrenn(const struct roff *r, const char *name, size_t len)
3462: {
3463: const struct roffkv *n;
3464:
3465: for (n = r->rentab; n; n = n->next)
3466: if (0 == strncmp(name, n->key.p, len) &&
3467: '\0' == n->key.p[(int)len])
3468: return n->val.p;
1.8 schwarze 3469:
1.149 schwarze 3470: return NULL;
1.7 schwarze 3471: }
3472:
1.8 schwarze 3473: static void
1.42 schwarze 3474: roff_freestr(struct roffkv *r)
1.7 schwarze 3475: {
1.42 schwarze 3476: struct roffkv *n, *nn;
1.7 schwarze 3477:
1.42 schwarze 3478: for (n = r; n; n = nn) {
3479: free(n->key.p);
3480: free(n->val.p);
1.7 schwarze 3481: nn = n->next;
3482: free(n);
3483: }
1.27 schwarze 3484: }
1.138 schwarze 3485:
3486: /* --- accessors and utility functions ------------------------------------ */
1.27 schwarze 3487:
3488: const struct tbl_span *
3489: roff_span(const struct roff *r)
3490: {
1.80 schwarze 3491:
1.149 schwarze 3492: return r->tbl ? tbl_span(r->tbl) : NULL;
1.32 schwarze 3493: }
3494:
3495: const struct eqn *
3496: roff_eqn(const struct roff *r)
3497: {
1.80 schwarze 3498:
1.149 schwarze 3499: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.42 schwarze 3500: }
3501:
3502: /*
3503: * Duplicate an input string, making the appropriate character
3504: * conversations (as stipulated by `tr') along the way.
3505: * Returns a heap-allocated string with all the replacements made.
3506: */
3507: char *
3508: roff_strdup(const struct roff *r, const char *p)
3509: {
3510: const struct roffkv *cp;
3511: char *res;
3512: const char *pp;
3513: size_t ssz, sz;
3514: enum mandoc_esc esc;
3515:
3516: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3517: return mandoc_strdup(p);
1.42 schwarze 3518: else if ('\0' == *p)
1.149 schwarze 3519: return mandoc_strdup("");
1.42 schwarze 3520:
3521: /*
3522: * Step through each character looking for term matches
3523: * (remember that a `tr' can be invoked with an escape, which is
3524: * a glyph but the escape is multi-character).
3525: * We only do this if the character hash has been initialised
3526: * and the string is >0 length.
3527: */
3528:
3529: res = NULL;
3530: ssz = 0;
3531:
3532: while ('\0' != *p) {
1.161 schwarze 3533: assert((unsigned int)*p < 128);
3534: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3535: sz = r->xtab[(int)*p].sz;
3536: res = mandoc_realloc(res, ssz + sz + 1);
3537: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3538: ssz += sz;
3539: p++;
3540: continue;
3541: } else if ('\\' != *p) {
3542: res = mandoc_realloc(res, ssz + 2);
3543: res[ssz++] = *p++;
3544: continue;
3545: }
3546:
3547: /* Search for term matches. */
3548: for (cp = r->xmbtab; cp; cp = cp->next)
3549: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3550: break;
3551:
3552: if (NULL != cp) {
3553: /*
3554: * A match has been found.
3555: * Append the match to the array and move
3556: * forward by its keysize.
3557: */
1.80 schwarze 3558: res = mandoc_realloc(res,
3559: ssz + cp->val.sz + 1);
1.42 schwarze 3560: memcpy(res + ssz, cp->val.p, cp->val.sz);
3561: ssz += cp->val.sz;
3562: p += (int)cp->key.sz;
3563: continue;
3564: }
3565:
3566: /*
3567: * Handle escapes carefully: we need to copy
3568: * over just the escape itself, or else we might
3569: * do replacements within the escape itself.
3570: * Make sure to pass along the bogus string.
3571: */
3572: pp = p++;
3573: esc = mandoc_escape(&p, NULL, NULL);
3574: if (ESCAPE_ERROR == esc) {
3575: sz = strlen(pp);
3576: res = mandoc_realloc(res, ssz + sz + 1);
3577: memcpy(res + ssz, pp, sz);
3578: break;
3579: }
1.80 schwarze 3580: /*
3581: * We bail out on bad escapes.
1.42 schwarze 3582: * No need to warn: we already did so when
3583: * roff_res() was called.
3584: */
3585: sz = (int)(p - pp);
3586: res = mandoc_realloc(res, ssz + sz + 1);
3587: memcpy(res + ssz, pp, sz);
3588: ssz += sz;
3589: }
3590:
3591: res[(int)ssz] = '\0';
1.149 schwarze 3592: return res;
1.99 schwarze 3593: }
3594:
3595: int
3596: roff_getformat(const struct roff *r)
3597: {
3598:
1.149 schwarze 3599: return r->format;
1.48 schwarze 3600: }
3601:
3602: /*
1.80 schwarze 3603: * Find out whether a line is a macro line or not.
1.48 schwarze 3604: * If it is, adjust the current position and return one; if it isn't,
3605: * return zero and don't change the current position.
3606: * If the control character has been set with `.cc', then let that grain
3607: * precedence.
3608: * This is slighly contrary to groff, where using the non-breaking
3609: * control character when `cc' has been invoked will cause the
3610: * non-breaking macro contents to be printed verbatim.
3611: */
3612: int
3613: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3614: {
3615: int pos;
3616:
3617: pos = *ppos;
3618:
1.175 schwarze 3619: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 3620: pos++;
1.175 schwarze 3621: else if (r->control != '\0')
1.149 schwarze 3622: return 0;
1.48 schwarze 3623: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3624: pos += 2;
3625: else if ('.' == cp[pos] || '\'' == cp[pos])
3626: pos++;
3627: else
1.149 schwarze 3628: return 0;
1.48 schwarze 3629:
3630: while (' ' == cp[pos] || '\t' == cp[pos])
3631: pos++;
3632:
3633: *ppos = pos;
1.149 schwarze 3634: return 1;
1.1 schwarze 3635: }
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