Annotation of src/usr.bin/mandoc/roff.c, Revision 1.178
1.178 ! schwarze 1: /* $OpenBSD: roff.c,v 1.177 2017/06/06 15:00:56 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 = '\\';
1.1 schwarze 768: }
769:
770: void
771: roff_free(struct roff *r)
772: {
773: roff_free1(r);
1.167 schwarze 774: roffhash_free(r->reqtab);
1.1 schwarze 775: free(r);
776: }
777:
778: struct roff *
1.151 schwarze 779: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 780: {
781: struct roff *r;
782:
1.11 schwarze 783: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 784: r->parse = parse;
1.167 schwarze 785: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.72 schwarze 786: r->options = options;
1.99 schwarze 787: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 788: r->rstackpos = -1;
1.175 schwarze 789: r->escape = '\\';
1.149 schwarze 790: return r;
1.137 schwarze 791: }
792:
1.138 schwarze 793: /* --- syntax tree state data management ---------------------------------- */
794:
1.137 schwarze 795: static void
796: roff_man_free1(struct roff_man *man)
797: {
798:
1.138 schwarze 799: if (man->first != NULL)
800: roff_node_delete(man, man->first);
1.137 schwarze 801: free(man->meta.msec);
802: free(man->meta.vol);
803: free(man->meta.os);
804: free(man->meta.arch);
805: free(man->meta.title);
806: free(man->meta.name);
807: free(man->meta.date);
808: }
809:
810: static void
811: roff_man_alloc1(struct roff_man *man)
812: {
813:
814: memset(&man->meta, 0, sizeof(man->meta));
815: man->first = mandoc_calloc(1, sizeof(*man->first));
816: man->first->type = ROFFT_ROOT;
817: man->last = man->first;
818: man->last_es = NULL;
819: man->flags = 0;
820: man->macroset = MACROSET_NONE;
821: man->lastsec = man->lastnamed = SEC_NONE;
822: man->next = ROFF_NEXT_CHILD;
823: }
824:
825: void
826: roff_man_reset(struct roff_man *man)
827: {
828:
829: roff_man_free1(man);
830: roff_man_alloc1(man);
831: }
832:
833: void
834: roff_man_free(struct roff_man *man)
835: {
836:
837: roff_man_free1(man);
838: free(man);
839: }
840:
841: struct roff_man *
842: roff_man_alloc(struct roff *roff, struct mparse *parse,
843: const char *defos, int quick)
844: {
845: struct roff_man *man;
846:
847: man = mandoc_calloc(1, sizeof(*man));
848: man->parse = parse;
849: man->roff = roff;
850: man->defos = defos;
851: man->quick = quick;
852: roff_man_alloc1(man);
1.168 schwarze 853: roff->man = man;
1.149 schwarze 854: return man;
1.1 schwarze 855: }
856:
1.138 schwarze 857: /* --- syntax tree handling ----------------------------------------------- */
858:
859: struct roff_node *
860: roff_node_alloc(struct roff_man *man, int line, int pos,
861: enum roff_type type, int tok)
862: {
863: struct roff_node *n;
864:
865: n = mandoc_calloc(1, sizeof(*n));
866: n->line = line;
867: n->pos = pos;
868: n->tok = tok;
869: n->type = type;
870: n->sec = man->lastsec;
871:
872: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 873: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 874: else
1.157 schwarze 875: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 876: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 877: n->flags |= NODE_LINE;
1.138 schwarze 878: man->flags &= ~MDOC_NEWLINE;
879:
1.149 schwarze 880: return n;
1.138 schwarze 881: }
882:
883: void
884: roff_node_append(struct roff_man *man, struct roff_node *n)
885: {
886:
887: switch (man->next) {
888: case ROFF_NEXT_SIBLING:
1.153 schwarze 889: if (man->last->next != NULL) {
890: n->next = man->last->next;
891: man->last->next->prev = n;
892: } else
893: man->last->parent->last = n;
1.138 schwarze 894: man->last->next = n;
895: n->prev = man->last;
896: n->parent = man->last->parent;
897: break;
898: case ROFF_NEXT_CHILD:
1.159 schwarze 899: if (man->last->child != NULL) {
900: n->next = man->last->child;
901: man->last->child->prev = n;
902: } else
903: man->last->last = n;
1.138 schwarze 904: man->last->child = n;
905: n->parent = man->last;
906: break;
907: default:
908: abort();
909: }
1.154 schwarze 910: man->last = n;
1.138 schwarze 911:
912: switch (n->type) {
913: case ROFFT_HEAD:
914: n->parent->head = n;
915: break;
916: case ROFFT_BODY:
1.154 schwarze 917: if (n->end != ENDBODY_NOT)
918: return;
1.138 schwarze 919: n->parent->body = n;
920: break;
921: case ROFFT_TAIL:
922: n->parent->tail = n;
923: break;
924: default:
1.154 schwarze 925: return;
1.138 schwarze 926: }
1.154 schwarze 927:
928: /*
929: * Copy over the normalised-data pointer of our parent. Not
930: * everybody has one, but copying a null pointer is fine.
931: */
932:
933: n->norm = n->parent->norm;
934: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 935: }
936:
1.139 schwarze 937: void
938: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
939: {
940: struct roff_node *n;
941:
942: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
943: n->string = roff_strdup(man->roff, word);
944: roff_node_append(man, n);
1.158 schwarze 945: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 946: man->next = ROFF_NEXT_SIBLING;
947: }
948:
949: void
950: roff_word_append(struct roff_man *man, const char *word)
951: {
952: struct roff_node *n;
953: char *addstr, *newstr;
954:
955: n = man->last;
956: addstr = roff_strdup(man->roff, word);
957: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
958: free(addstr);
959: free(n->string);
960: n->string = newstr;
961: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 962: }
963:
964: void
965: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
966: {
967: struct roff_node *n;
968:
969: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
970: roff_node_append(man, n);
971: man->next = ROFF_NEXT_CHILD;
972: }
973:
974: struct roff_node *
975: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
976: {
977: struct roff_node *n;
978:
979: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
980: roff_node_append(man, n);
981: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 982: return n;
1.139 schwarze 983: }
984:
1.138 schwarze 985: struct roff_node *
986: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
987: {
988: struct roff_node *n;
989:
990: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
991: roff_node_append(man, n);
992: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 993: return n;
1.138 schwarze 994: }
995:
996: struct roff_node *
997: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
998: {
999: struct roff_node *n;
1000:
1001: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1002: roff_node_append(man, n);
1003: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1004: return n;
1.139 schwarze 1005: }
1006:
1007: void
1008: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1009: {
1010: struct roff_node *n;
1011:
1012: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1013: n->eqn = eqn;
1014: if (eqn->ln > man->last->line)
1.157 schwarze 1015: n->flags |= NODE_LINE;
1.139 schwarze 1016: roff_node_append(man, n);
1017: man->next = ROFF_NEXT_SIBLING;
1018: }
1019:
1020: void
1021: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1022: {
1023: struct roff_node *n;
1024:
1025: if (man->macroset == MACROSET_MAN)
1.174 schwarze 1026: man_breakscope(man, ROFF_TS);
1.139 schwarze 1027: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1028: n->span = tbl;
1029: roff_node_append(man, n);
1.158 schwarze 1030: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 1031: man->next = ROFF_NEXT_SIBLING;
1.138 schwarze 1032: }
1033:
1034: void
1035: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1036: {
1037:
1038: /* Adjust siblings. */
1039:
1040: if (n->prev)
1041: n->prev->next = n->next;
1042: if (n->next)
1043: n->next->prev = n->prev;
1044:
1045: /* Adjust parent. */
1046:
1047: if (n->parent != NULL) {
1048: if (n->parent->child == n)
1049: n->parent->child = n->next;
1050: if (n->parent->last == n)
1051: n->parent->last = n->prev;
1052: }
1053:
1054: /* Adjust parse point. */
1055:
1056: if (man == NULL)
1057: return;
1058: if (man->last == n) {
1059: if (n->prev == NULL) {
1060: man->last = n->parent;
1061: man->next = ROFF_NEXT_CHILD;
1062: } else {
1063: man->last = n->prev;
1064: man->next = ROFF_NEXT_SIBLING;
1065: }
1066: }
1067: if (man->first == n)
1068: man->first = NULL;
1069: }
1070:
1071: void
1072: roff_node_free(struct roff_node *n)
1073: {
1074:
1075: if (n->args != NULL)
1076: mdoc_argv_free(n->args);
1077: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1078: free(n->norm);
1079: free(n->string);
1080: free(n);
1081: }
1082:
1083: void
1084: roff_node_delete(struct roff_man *man, struct roff_node *n)
1085: {
1086:
1087: while (n->child != NULL)
1088: roff_node_delete(man, n->child);
1089: roff_node_unlink(man, n);
1090: roff_node_free(n);
1.141 schwarze 1091: }
1092:
1093: void
1094: deroff(char **dest, const struct roff_node *n)
1095: {
1096: char *cp;
1097: size_t sz;
1098:
1099: if (n->type != ROFFT_TEXT) {
1100: for (n = n->child; n != NULL; n = n->next)
1101: deroff(dest, n);
1102: return;
1103: }
1104:
1.160 schwarze 1105: /* Skip leading whitespace. */
1.141 schwarze 1106:
1.160 schwarze 1107: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1108: if (cp[0] == '\\' && cp[1] != '\0' &&
1109: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1110: cp++;
1.160 schwarze 1111: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1112: break;
1113: }
1114:
1.161 schwarze 1115: /* Skip trailing backslash. */
1116:
1117: sz = strlen(cp);
1.162 schwarze 1118: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1119: sz--;
1120:
1.141 schwarze 1121: /* Skip trailing whitespace. */
1122:
1.161 schwarze 1123: for (; sz; sz--)
1.141 schwarze 1124: if ( ! isspace((unsigned char)cp[sz-1]))
1125: break;
1126:
1127: /* Skip empty strings. */
1128:
1129: if (sz == 0)
1130: return;
1131:
1132: if (*dest == NULL) {
1133: *dest = mandoc_strndup(cp, sz);
1134: return;
1135: }
1136:
1137: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1138: free(*dest);
1139: *dest = cp;
1.138 schwarze 1140: }
1141:
1142: /* --- main functions of the roff parser ---------------------------------- */
1143:
1.8 schwarze 1144: /*
1.79 schwarze 1145: * In the current line, expand escape sequences that tend to get
1146: * used in numerical expressions and conditional requests.
1147: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1148: */
1.45 schwarze 1149: static enum rofferr
1.110 schwarze 1150: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1151: {
1.81 schwarze 1152: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1153: const char *start; /* start of the string to process */
1.82 schwarze 1154: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1155: const char *stnam; /* start of the name, after "[(*" */
1156: const char *cp; /* end of the name, e.g. before ']' */
1157: const char *res; /* the string to be substituted */
1.110 schwarze 1158: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1159: size_t maxl; /* expected length of the escape name */
1160: size_t naml; /* actual length of the escape name */
1.109 schwarze 1161: enum mandoc_esc esc; /* type of the escape sequence */
1162: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1163: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1164: int npos; /* position in numeric expression */
1.91 schwarze 1165: int arg_complete; /* argument not interrupted by eol */
1.175 schwarze 1166: int done; /* no more input available */
1.79 schwarze 1167: char term; /* character terminating the escape */
1.8 schwarze 1168:
1.175 schwarze 1169: /* Search forward for comments. */
1170:
1171: done = 0;
1172: start = buf->buf + pos;
1173: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1174: if (stesc[0] != r->escape || stesc[1] == '\0')
1175: continue;
1176: stesc++;
1177: if (*stesc != '"' && *stesc != '#')
1178: continue;
1179: cp = strchr(stesc--, '\0') - 1;
1180: if (*cp == '\n') {
1181: done = 1;
1182: cp--;
1183: }
1184: if (*cp == ' ' || *cp == '\t')
1185: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1186: ln, cp - buf->buf, NULL);
1187: while (stesc > start && stesc[-1] == ' ')
1188: stesc--;
1189: *stesc = '\0';
1190: break;
1191: }
1192: if (stesc == start)
1193: return ROFF_CONT;
1194: stesc--;
1195:
1196: /* Notice the end of the input. */
1197:
1198: if (*stesc == '\n') {
1199: *stesc-- = '\0';
1200: done = 1;
1201: }
1202:
1.43 schwarze 1203: expand_count = 0;
1.175 schwarze 1204: while (stesc >= start) {
1.43 schwarze 1205:
1.78 schwarze 1206: /* Search backwards for the next backslash. */
1207:
1.175 schwarze 1208: if (*stesc != r->escape) {
1209: if (*stesc == '\\') {
1210: *stesc = '\0';
1211: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1212: buf->buf, stesc + 1) + 1;
1213: start = nbuf + pos;
1214: stesc = nbuf + (stesc - buf->buf);
1215: free(buf->buf);
1216: buf->buf = nbuf;
1217: }
1218: stesc--;
1.78 schwarze 1219: continue;
1.175 schwarze 1220: }
1.78 schwarze 1221:
1222: /* If it is escaped, skip it. */
1223:
1224: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1225: if (*cp != r->escape)
1.78 schwarze 1226: break;
1227:
1.110 schwarze 1228: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1229: while (stesc > cp)
1230: *stesc-- = '\\';
1.78 schwarze 1231: continue;
1.175 schwarze 1232: } else if (stesc[1] != '\0') {
1233: *stesc = '\\';
1234: } else {
1235: *stesc-- = '\0';
1236: if (done)
1237: continue;
1238: else
1239: return ROFF_APPEND;
1.78 schwarze 1240: }
1.23 schwarze 1241:
1.79 schwarze 1242: /* Decide whether to expand or to check only. */
1.23 schwarze 1243:
1.79 schwarze 1244: term = '\0';
1.78 schwarze 1245: cp = stesc + 1;
1.53 schwarze 1246: switch (*cp) {
1.80 schwarze 1247: case '*':
1.53 schwarze 1248: res = NULL;
1249: break;
1.80 schwarze 1250: case 'B':
1251: case 'w':
1.79 schwarze 1252: term = cp[1];
1253: /* FALLTHROUGH */
1.80 schwarze 1254: case 'n':
1.53 schwarze 1255: res = ubuf;
1256: break;
1257: default:
1.109 schwarze 1258: esc = mandoc_escape(&cp, &stnam, &inaml);
1259: if (esc == ESCAPE_ERROR ||
1260: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1261: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1262: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1263: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1264: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1265: stesc--;
1.78 schwarze 1266: continue;
1.42 schwarze 1267: }
1268:
1.78 schwarze 1269: if (EXPAND_LIMIT < ++expand_count) {
1270: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1271: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1272: return ROFF_IGN;
1.78 schwarze 1273: }
1.23 schwarze 1274:
1275: /*
1276: * The third character decides the length
1.53 schwarze 1277: * of the name of the string or register.
1.23 schwarze 1278: * Save a pointer to the name.
1279: */
1280:
1.110 schwarze 1281: if (term == '\0') {
1.79 schwarze 1282: switch (*++cp) {
1.80 schwarze 1283: case '\0':
1.79 schwarze 1284: maxl = 0;
1285: break;
1.80 schwarze 1286: case '(':
1.79 schwarze 1287: cp++;
1288: maxl = 2;
1289: break;
1.80 schwarze 1290: case '[':
1.79 schwarze 1291: cp++;
1292: term = ']';
1293: maxl = 0;
1294: break;
1295: default:
1296: maxl = 1;
1297: break;
1298: }
1299: } else {
1300: cp += 2;
1.8 schwarze 1301: maxl = 0;
1302: }
1.23 schwarze 1303: stnam = cp;
1.8 schwarze 1304:
1.23 schwarze 1305: /* Advance to the end of the name. */
1.8 schwarze 1306:
1.125 schwarze 1307: naml = 0;
1.91 schwarze 1308: arg_complete = 1;
1.125 schwarze 1309: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1310: if (*cp == '\0') {
1.92 schwarze 1311: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1312: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1313: arg_complete = 0;
1.79 schwarze 1314: break;
1.42 schwarze 1315: }
1.110 schwarze 1316: if (maxl == 0 && *cp == term) {
1.79 schwarze 1317: cp++;
1.125 schwarze 1318: break;
1319: }
1320: if (*cp++ != '\\' || stesc[1] != 'w') {
1321: naml++;
1322: continue;
1323: }
1324: switch (mandoc_escape(&cp, NULL, NULL)) {
1325: case ESCAPE_SPECIAL:
1326: case ESCAPE_UNICODE:
1327: case ESCAPE_NUMBERED:
1328: case ESCAPE_OVERSTRIKE:
1329: naml++;
1330: break;
1331: default:
1.8 schwarze 1332: break;
1.79 schwarze 1333: }
1.8 schwarze 1334: }
1335:
1.23 schwarze 1336: /*
1337: * Retrieve the replacement string; if it is
1338: * undefined, resume searching for escapes.
1339: */
1340:
1.79 schwarze 1341: switch (stesc[1]) {
1.80 schwarze 1342: case '*':
1.91 schwarze 1343: if (arg_complete)
1344: res = roff_getstrn(r, stnam, naml);
1.79 schwarze 1345: break;
1.80 schwarze 1346: case 'B':
1.79 schwarze 1347: npos = 0;
1.91 schwarze 1348: ubuf[0] = arg_complete &&
1.133 schwarze 1349: roff_evalnum(r, ln, stnam, &npos,
1350: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1351: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1352: ubuf[1] = '\0';
1353: break;
1.80 schwarze 1354: case 'n':
1.91 schwarze 1355: if (arg_complete)
1356: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1357: roff_getregn(r, stnam, naml));
1358: else
1359: ubuf[0] = '\0';
1.79 schwarze 1360: break;
1.80 schwarze 1361: case 'w':
1.91 schwarze 1362: /* use even incomplete args */
1.81 schwarze 1363: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1364: 24 * (int)naml);
1365: break;
1366: }
1.8 schwarze 1367:
1.110 schwarze 1368: if (res == NULL) {
1.92 schwarze 1369: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1370: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1371: "%.*s", (int)naml, stnam);
1.37 schwarze 1372: res = "";
1.118 schwarze 1373: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1374: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1375: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1376: return ROFF_IGN;
1.8 schwarze 1377: }
1378:
1.23 schwarze 1379: /* Replace the escape sequence by the string. */
1380:
1.82 schwarze 1381: *stesc = '\0';
1.110 schwarze 1382: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1383: buf->buf, res, cp) + 1;
1.8 schwarze 1384:
1.78 schwarze 1385: /* Prepare for the next replacement. */
1.8 schwarze 1386:
1.78 schwarze 1387: start = nbuf + pos;
1.110 schwarze 1388: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1389: free(buf->buf);
1390: buf->buf = nbuf;
1.42 schwarze 1391: }
1.149 schwarze 1392: return ROFF_CONT;
1.42 schwarze 1393: }
1394:
1395: /*
1.147 schwarze 1396: * Process text streams.
1.42 schwarze 1397: */
1398: static enum rofferr
1.177 schwarze 1399: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1400: {
1401: size_t sz;
1402: const char *start;
1.51 schwarze 1403: char *p;
1404: int isz;
1.42 schwarze 1405: enum mandoc_esc esc;
1406:
1.147 schwarze 1407: /* Spring the input line trap. */
1408:
1409: if (roffit_lines == 1) {
1410: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1411: free(buf->buf);
1412: buf->buf = p;
1413: buf->sz = isz + 1;
1414: *offs = 0;
1415: free(roffit_macro);
1416: roffit_lines = 0;
1.149 schwarze 1417: return ROFF_REPARSE;
1.147 schwarze 1418: } else if (roffit_lines > 1)
1419: --roffit_lines;
1420:
1.177 schwarze 1421: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1422: if (roffce_lines < 1) {
1423: r->man->last = roffce_node;
1424: r->man->next = ROFF_NEXT_SIBLING;
1425: roffce_lines = 0;
1426: roffce_node = NULL;
1427: } else
1428: roffce_lines--;
1429: }
1430:
1.147 schwarze 1431: /* Convert all breakable hyphens into ASCII_HYPH. */
1432:
1.110 schwarze 1433: start = p = buf->buf + pos;
1.42 schwarze 1434:
1.110 schwarze 1435: while (*p != '\0') {
1.42 schwarze 1436: sz = strcspn(p, "-\\");
1437: p += sz;
1438:
1.110 schwarze 1439: if (*p == '\0')
1.42 schwarze 1440: break;
1441:
1.110 schwarze 1442: if (*p == '\\') {
1.42 schwarze 1443: /* Skip over escapes. */
1444: p++;
1.62 schwarze 1445: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1446: if (esc == ESCAPE_ERROR)
1.42 schwarze 1447: break;
1.136 schwarze 1448: while (*p == '-')
1449: p++;
1.42 schwarze 1450: continue;
1451: } else if (p == start) {
1452: p++;
1453: continue;
1454: }
1455:
1.44 schwarze 1456: if (isalpha((unsigned char)p[-1]) &&
1457: isalpha((unsigned char)p[1]))
1.42 schwarze 1458: *p = ASCII_HYPH;
1459: p++;
1.8 schwarze 1460: }
1.149 schwarze 1461: return ROFF_CONT;
1.8 schwarze 1462: }
1463:
1.1 schwarze 1464: enum rofferr
1.110 schwarze 1465: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1466: {
1.166 schwarze 1467: enum roff_tok t;
1.27 schwarze 1468: enum rofferr e;
1.110 schwarze 1469: int pos; /* parse point */
1.115 schwarze 1470: int spos; /* saved parse point for messages */
1.110 schwarze 1471: int ppos; /* original offset in buf->buf */
1472: int ctl; /* macro line (boolean) */
1473:
1474: ppos = pos = *offs;
1.1 schwarze 1475:
1.102 schwarze 1476: /* Handle in-line equation delimiters. */
1477:
1.108 schwarze 1478: if (r->tbl == NULL &&
1479: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1480: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1481: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1482: if (e == ROFF_REPARSE)
1.149 schwarze 1483: return e;
1.102 schwarze 1484: assert(e == ROFF_CONT);
1485: }
1486:
1487: /* Expand some escape sequences. */
1.8 schwarze 1488:
1.110 schwarze 1489: e = roff_res(r, buf, ln, pos);
1.175 schwarze 1490: if (e == ROFF_IGN || e == ROFF_APPEND)
1.149 schwarze 1491: return e;
1.110 schwarze 1492: assert(e == ROFF_CONT);
1.8 schwarze 1493:
1.110 schwarze 1494: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1495:
1.8 schwarze 1496: /*
1.2 schwarze 1497: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1498: * text through the macro's filter.
1499: * Equations process all content themselves.
1500: * Tables process almost all content themselves, but we want
1501: * to warn about macros before passing it there.
1.2 schwarze 1502: */
1503:
1.124 schwarze 1504: if (r->last != NULL && ! ctl) {
1.2 schwarze 1505: t = r->last->tok;
1.110 schwarze 1506: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.166 schwarze 1507: if (e == ROFF_IGN)
1.149 schwarze 1508: return e;
1.166 schwarze 1509: assert(e == ROFF_CONT);
1.54 schwarze 1510: }
1.124 schwarze 1511: if (r->eqn != NULL)
1.149 schwarze 1512: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.124 schwarze 1513: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.149 schwarze 1514: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.124 schwarze 1515: if ( ! ctl)
1.177 schwarze 1516: return roff_parsetext(r, buf, pos, offs);
1.100 schwarze 1517:
1518: /* Skip empty request lines. */
1519:
1.110 schwarze 1520: if (buf->buf[pos] == '"') {
1.100 schwarze 1521: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1522: ln, pos, NULL);
1.149 schwarze 1523: return ROFF_IGN;
1.110 schwarze 1524: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1525: return ROFF_IGN;
1.2 schwarze 1526:
1527: /*
1528: * If a scope is open, go to the child handler for that macro,
1529: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1530: * Don't do so if an equation is open.
1.2 schwarze 1531: */
1532:
1533: if (r->last) {
1.1 schwarze 1534: t = r->last->tok;
1.149 schwarze 1535: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1536: }
1537:
1.115 schwarze 1538: /* No scope is open. This is a new request or macro. */
1539:
1540: spos = pos;
1541: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1542:
1543: /* Tables ignore most macros. */
1544:
1.166 schwarze 1545: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS)) {
1.115 schwarze 1546: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1547: ln, pos, buf->buf + spos);
1.129 schwarze 1548: if (t == ROFF_TS)
1.149 schwarze 1549: return ROFF_IGN;
1.129 schwarze 1550: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1551: pos++;
1.163 schwarze 1552: while (buf->buf[pos] == ' ')
1.129 schwarze 1553: pos++;
1.149 schwarze 1554: return tbl_read(r->tbl, ln, buf->buf, pos);
1.115 schwarze 1555: }
1556:
1.177 schwarze 1557: /* For now, let high level macros abort .ce mode. */
1558:
1559: if (ctl && roffce_node != NULL &&
1560: (t == TOKEN_NONE || t == ROFF_EQ || t == ROFF_TS)) {
1561: r->man->last = roffce_node;
1562: r->man->next = ROFF_NEXT_SIBLING;
1563: roffce_lines = 0;
1564: roffce_node = NULL;
1565: }
1566:
1.2 schwarze 1567: /*
1.115 schwarze 1568: * This is neither a roff request nor a user-defined macro.
1569: * Let the standard macro set parsers handle it.
1.2 schwarze 1570: */
1571:
1.166 schwarze 1572: if (t == TOKEN_NONE)
1.149 schwarze 1573: return ROFF_CONT;
1.115 schwarze 1574:
1575: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1576:
1.168 schwarze 1577: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1578: }
1579:
1.27 schwarze 1580: void
1.2 schwarze 1581: roff_endparse(struct roff *r)
1582: {
1.1 schwarze 1583:
1.27 schwarze 1584: if (r->last)
1.94 schwarze 1585: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1586: r->last->line, r->last->col,
1.167 schwarze 1587: roff_name[r->last->tok]);
1.27 schwarze 1588:
1.32 schwarze 1589: if (r->eqn) {
1.94 schwarze 1590: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1591: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1592: eqn_end(&r->eqn);
1.32 schwarze 1593: }
1594:
1.27 schwarze 1595: if (r->tbl) {
1.94 schwarze 1596: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1597: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1598: tbl_end(&r->tbl);
1.27 schwarze 1599: }
1.1 schwarze 1600: }
1601:
1602: /*
1603: * Parse a roff node's type from the input buffer. This must be in the
1604: * form of ".foo xxx" in the usual way.
1605: */
1.166 schwarze 1606: static enum roff_tok
1.87 schwarze 1607: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1608: {
1.87 schwarze 1609: char *cp;
1.16 schwarze 1610: const char *mac;
1611: size_t maclen;
1.166 schwarze 1612: enum roff_tok t;
1.1 schwarze 1613:
1.87 schwarze 1614: cp = buf + *pos;
1615:
1616: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1617: return TOKEN_NONE;
1.1 schwarze 1618:
1.87 schwarze 1619: mac = cp;
1620: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1621:
1.178 ! schwarze 1622: t = (r->current_string = roff_getstrn(r, mac, maclen)) ?
! 1623: ROFF_USERDEF :
! 1624: (r->current_string = roff_getrenn(r, mac, maclen)) ?
! 1625: ROFF_RENAMED : roffhash_find(r->reqtab, mac, maclen);
1.1 schwarze 1626:
1.166 schwarze 1627: if (t != TOKEN_NONE)
1.87 schwarze 1628: *pos = cp - buf;
1.1 schwarze 1629:
1.149 schwarze 1630: return t;
1.1 schwarze 1631: }
1632:
1.138 schwarze 1633: /* --- handling of request blocks ----------------------------------------- */
1634:
1.1 schwarze 1635: static enum rofferr
1.2 schwarze 1636: roff_cblock(ROFF_ARGS)
1.1 schwarze 1637: {
1638:
1.2 schwarze 1639: /*
1640: * A block-close `..' should only be invoked as a child of an
1641: * ignore macro, otherwise raise a warning and just ignore it.
1642: */
1643:
1.110 schwarze 1644: if (r->last == NULL) {
1.94 schwarze 1645: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1646: ln, ppos, "..");
1.149 schwarze 1647: return ROFF_IGN;
1.2 schwarze 1648: }
1.1 schwarze 1649:
1.2 schwarze 1650: switch (r->last->tok) {
1.80 schwarze 1651: case ROFF_am:
1.93 schwarze 1652: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1653: case ROFF_ami:
1654: case ROFF_de:
1.23 schwarze 1655: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1656: case ROFF_dei:
1657: case ROFF_ig:
1.2 schwarze 1658: break;
1659: default:
1.94 schwarze 1660: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1661: ln, ppos, "..");
1.149 schwarze 1662: return ROFF_IGN;
1.2 schwarze 1663: }
1664:
1.110 schwarze 1665: if (buf->buf[pos] != '\0')
1.90 schwarze 1666: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1667: ".. %s", buf->buf + pos);
1.2 schwarze 1668:
1669: roffnode_pop(r);
1670: roffnode_cleanscope(r);
1.149 schwarze 1671: return ROFF_IGN;
1.2 schwarze 1672:
1673: }
1.1 schwarze 1674:
1.2 schwarze 1675: static void
1676: roffnode_cleanscope(struct roff *r)
1677: {
1.1 schwarze 1678:
1.2 schwarze 1679: while (r->last) {
1.46 schwarze 1680: if (--r->last->endspan != 0)
1.2 schwarze 1681: break;
1682: roffnode_pop(r);
1683: }
1684: }
1.1 schwarze 1685:
1.68 schwarze 1686: static void
1687: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1688: {
1.1 schwarze 1689:
1.2 schwarze 1690: if (NULL == r->last) {
1.94 schwarze 1691: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1692: ln, ppos, "\\}");
1.68 schwarze 1693: return;
1.2 schwarze 1694: }
1.1 schwarze 1695:
1.2 schwarze 1696: switch (r->last->tok) {
1.80 schwarze 1697: case ROFF_el:
1698: case ROFF_ie:
1699: case ROFF_if:
1.2 schwarze 1700: break;
1701: default:
1.94 schwarze 1702: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1703: ln, ppos, "\\}");
1.68 schwarze 1704: return;
1.2 schwarze 1705: }
1.1 schwarze 1706:
1.2 schwarze 1707: if (r->last->endspan > -1) {
1.94 schwarze 1708: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1709: ln, ppos, "\\}");
1.68 schwarze 1710: return;
1.2 schwarze 1711: }
1712:
1713: roffnode_pop(r);
1714: roffnode_cleanscope(r);
1.68 schwarze 1715: return;
1.1 schwarze 1716: }
1717:
1718: static enum rofferr
1.2 schwarze 1719: roff_block(ROFF_ARGS)
1.1 schwarze 1720: {
1.93 schwarze 1721: const char *name;
1722: char *iname, *cp;
1.86 schwarze 1723: size_t namesz;
1.16 schwarze 1724:
1.93 schwarze 1725: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1726:
1.110 schwarze 1727: if (tok == ROFF_de1)
1.93 schwarze 1728: tok = ROFF_de;
1.123 schwarze 1729: else if (tok == ROFF_dei1)
1730: tok = ROFF_dei;
1.110 schwarze 1731: else if (tok == ROFF_am1)
1.93 schwarze 1732: tok = ROFF_am;
1.123 schwarze 1733: else if (tok == ROFF_ami1)
1734: tok = ROFF_ami;
1.93 schwarze 1735:
1736: /* Parse the macro name argument. */
1737:
1.110 schwarze 1738: cp = buf->buf + pos;
1739: if (tok == ROFF_ig) {
1.93 schwarze 1740: iname = NULL;
1741: namesz = 0;
1742: } else {
1743: iname = cp;
1744: namesz = roff_getname(r, &cp, ln, ppos);
1745: iname[namesz] = '\0';
1746: }
1.22 schwarze 1747:
1.93 schwarze 1748: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1749:
1.110 schwarze 1750: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1751: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1752: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1753: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1754: "%.*s", (int)namesz, iname);
1755: namesz = 0;
1756: } else
1757: namesz = strlen(name);
1758: } else
1759: name = iname;
1.22 schwarze 1760:
1.110 schwarze 1761: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1762: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1763: ln, ppos, roff_name[tok]);
1.149 schwarze 1764: return ROFF_IGN;
1.93 schwarze 1765: }
1.2 schwarze 1766:
1.16 schwarze 1767: roffnode_push(r, tok, name, ln, ppos);
1768:
1769: /*
1770: * At the beginning of a `de' macro, clear the existing string
1771: * with the same name, if there is one. New content will be
1.66 schwarze 1772: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1773: */
1.22 schwarze 1774:
1.110 schwarze 1775: if (tok == ROFF_de || tok == ROFF_dei)
1.86 schwarze 1776: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.2 schwarze 1777:
1.110 schwarze 1778: if (*cp == '\0')
1.149 schwarze 1779: return ROFF_IGN;
1.1 schwarze 1780:
1.93 schwarze 1781: /* Get the custom end marker. */
1.22 schwarze 1782:
1.93 schwarze 1783: iname = cp;
1.86 schwarze 1784: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1785:
1786: /* Resolve the end marker if it is indirect. */
1787:
1.110 schwarze 1788: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1789: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1790: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1791: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1792: "%.*s", (int)namesz, iname);
1793: namesz = 0;
1794: } else
1795: namesz = strlen(name);
1796: } else
1797: name = iname;
1798:
1.86 schwarze 1799: if (namesz)
1800: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1801:
1.110 schwarze 1802: if (*cp != '\0')
1.90 schwarze 1803: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 1804: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 1805:
1.149 schwarze 1806: return ROFF_IGN;
1.1 schwarze 1807: }
1808:
1809: static enum rofferr
1.2 schwarze 1810: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1811: {
1.166 schwarze 1812: enum roff_tok t;
1.2 schwarze 1813: int i, j;
1814:
1815: /*
1816: * First check whether a custom macro exists at this level. If
1817: * it does, then check against it. This is some of groff's
1818: * stranger behaviours. If we encountered a custom end-scope
1819: * tag and that tag also happens to be a "real" macro, then we
1820: * need to try interpreting it again as a real macro. If it's
1821: * not, then return ignore. Else continue.
1822: */
1823:
1824: if (r->last->end) {
1.35 schwarze 1825: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1826: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1827: break;
1.1 schwarze 1828:
1.110 schwarze 1829: if (r->last->end[j] == '\0' &&
1830: (buf->buf[i] == '\0' ||
1831: buf->buf[i] == ' ' ||
1832: buf->buf[i] == '\t')) {
1.2 schwarze 1833: roffnode_pop(r);
1834: roffnode_cleanscope(r);
1.1 schwarze 1835:
1.110 schwarze 1836: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1837: i++;
1838:
1839: pos = i;
1.110 schwarze 1840: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 1841: TOKEN_NONE)
1.149 schwarze 1842: return ROFF_RERUN;
1843: return ROFF_IGN;
1.2 schwarze 1844: }
1.1 schwarze 1845: }
1846:
1.2 schwarze 1847: /*
1848: * If we have no custom end-query or lookup failed, then try
1849: * pulling it out of the hashtable.
1850: */
1.1 schwarze 1851:
1.110 schwarze 1852: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1853:
1.110 schwarze 1854: if (t != ROFF_cblock) {
1855: if (tok != ROFF_ig)
1856: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1857: return ROFF_IGN;
1.16 schwarze 1858: }
1.1 schwarze 1859:
1.149 schwarze 1860: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1861: }
1862:
1863: static enum rofferr
1864: roff_block_text(ROFF_ARGS)
1865: {
1866:
1.110 schwarze 1867: if (tok != ROFF_ig)
1868: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1869:
1.149 schwarze 1870: return ROFF_IGN;
1.2 schwarze 1871: }
1872:
1873: static enum rofferr
1874: roff_cond_sub(ROFF_ARGS)
1875: {
1.166 schwarze 1876: enum roff_tok t;
1.37 schwarze 1877: char *ep;
1.71 schwarze 1878: int rr;
1.2 schwarze 1879:
1880: rr = r->last->rule;
1.37 schwarze 1881: roffnode_cleanscope(r);
1.110 schwarze 1882: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1883:
1.37 schwarze 1884: /*
1.50 schwarze 1885: * Fully handle known macros when they are structurally
1886: * required or when the conditional evaluated to true.
1.5 schwarze 1887: */
1888:
1.166 schwarze 1889: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.149 schwarze 1890: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.39 schwarze 1891:
1.69 schwarze 1892: /*
1893: * If `\}' occurs on a macro line without a preceding macro,
1894: * drop the line completely.
1895: */
1896:
1.110 schwarze 1897: ep = buf->buf + pos;
1898: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1899: rr = 0;
1.69 schwarze 1900:
1.50 schwarze 1901: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1902:
1.110 schwarze 1903: while ((ep = strchr(ep, '\\')) != NULL) {
1904: if (*(++ep) == '}') {
1.70 schwarze 1905: *ep = '&';
1.110 schwarze 1906: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1907: }
1.119 schwarze 1908: if (*ep != '\0')
1909: ++ep;
1.50 schwarze 1910: }
1.149 schwarze 1911: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1912: }
1913:
1914: static enum rofferr
1915: roff_cond_text(ROFF_ARGS)
1916: {
1.37 schwarze 1917: char *ep;
1.71 schwarze 1918: int rr;
1.2 schwarze 1919:
1920: rr = r->last->rule;
1.37 schwarze 1921: roffnode_cleanscope(r);
1.1 schwarze 1922:
1.110 schwarze 1923: ep = buf->buf + pos;
1924: while ((ep = strchr(ep, '\\')) != NULL) {
1925: if (*(++ep) == '}') {
1.70 schwarze 1926: *ep = '&';
1.110 schwarze 1927: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1928: }
1.119 schwarze 1929: if (*ep != '\0')
1930: ++ep;
1.2 schwarze 1931: }
1.149 schwarze 1932: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1933: }
1934:
1.138 schwarze 1935: /* --- handling of numeric and conditional expressions -------------------- */
1936:
1.77 schwarze 1937: /*
1938: * Parse a single signed integer number. Stop at the first non-digit.
1939: * If there is at least one digit, return success and advance the
1940: * parse point, else return failure and let the parse point unchanged.
1941: * Ignore overflows, treat them just like the C language.
1942: */
1.56 schwarze 1943: static int
1.133 schwarze 1944: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 1945: {
1.133 schwarze 1946: int myres, scaled, n, p;
1.79 schwarze 1947:
1948: if (NULL == res)
1949: res = &myres;
1.56 schwarze 1950:
1951: p = *pos;
1952: n = v[p] == '-';
1.133 schwarze 1953: if (n || v[p] == '+')
1.56 schwarze 1954: p++;
1955:
1.133 schwarze 1956: if (flags & ROFFNUM_WHITE)
1957: while (isspace((unsigned char)v[p]))
1958: p++;
1959:
1.56 schwarze 1960: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 1961: *res = 10 * *res + v[p] - '0';
1.56 schwarze 1962: if (p == *pos + n)
1963: return 0;
1964:
1965: if (n)
1966: *res = -*res;
1967:
1.126 schwarze 1968: /* Each number may be followed by one optional scaling unit. */
1969:
1970: switch (v[p]) {
1971: case 'f':
1.133 schwarze 1972: scaled = *res * 65536;
1.126 schwarze 1973: break;
1974: case 'i':
1.133 schwarze 1975: scaled = *res * 240;
1.126 schwarze 1976: break;
1977: case 'c':
1.133 schwarze 1978: scaled = *res * 240 / 2.54;
1.126 schwarze 1979: break;
1980: case 'v':
1981: case 'P':
1.133 schwarze 1982: scaled = *res * 40;
1.126 schwarze 1983: break;
1984: case 'm':
1985: case 'n':
1.133 schwarze 1986: scaled = *res * 24;
1.126 schwarze 1987: break;
1988: case 'p':
1.133 schwarze 1989: scaled = *res * 10 / 3;
1.126 schwarze 1990: break;
1991: case 'u':
1.133 schwarze 1992: scaled = *res;
1.126 schwarze 1993: break;
1994: case 'M':
1.133 schwarze 1995: scaled = *res * 6 / 25;
1.126 schwarze 1996: break;
1997: default:
1.133 schwarze 1998: scaled = *res;
1.126 schwarze 1999: p--;
2000: break;
2001: }
1.133 schwarze 2002: if (flags & ROFFNUM_SCALE)
2003: *res = scaled;
1.126 schwarze 2004:
2005: *pos = p + 1;
1.149 schwarze 2006: return 1;
1.56 schwarze 2007: }
2008:
1.71 schwarze 2009: /*
2010: * Evaluate a string comparison condition.
2011: * The first character is the delimiter.
2012: * Succeed if the string up to its second occurrence
2013: * matches the string up to its third occurence.
2014: * Advance the cursor after the third occurrence
2015: * or lacking that, to the end of the line.
2016: */
2017: static int
2018: roff_evalstrcond(const char *v, int *pos)
2019: {
2020: const char *s1, *s2, *s3;
2021: int match;
2022:
2023: match = 0;
2024: s1 = v + *pos; /* initial delimiter */
2025: s2 = s1 + 1; /* for scanning the first string */
2026: s3 = strchr(s2, *s1); /* for scanning the second string */
2027:
2028: if (NULL == s3) /* found no middle delimiter */
2029: goto out;
2030:
2031: while ('\0' != *++s3) {
2032: if (*s2 != *s3) { /* mismatch */
2033: s3 = strchr(s3, *s1);
2034: break;
2035: }
2036: if (*s3 == *s1) { /* found the final delimiter */
2037: match = 1;
2038: break;
2039: }
2040: s2++;
2041: }
2042:
2043: out:
2044: if (NULL == s3)
2045: s3 = strchr(s2, '\0');
1.114 schwarze 2046: else if (*s3 != '\0')
1.71 schwarze 2047: s3++;
2048: *pos = s3 - v;
1.149 schwarze 2049: return match;
1.71 schwarze 2050: }
2051:
1.77 schwarze 2052: /*
2053: * Evaluate an optionally negated single character, numerical,
2054: * or string condition.
2055: */
1.71 schwarze 2056: static int
1.143 schwarze 2057: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2058: {
1.143 schwarze 2059: char *cp, *name;
2060: size_t sz;
1.113 schwarze 2061: int number, savepos, wanttrue;
1.5 schwarze 2062:
1.71 schwarze 2063: if ('!' == v[*pos]) {
2064: wanttrue = 0;
2065: (*pos)++;
2066: } else
2067: wanttrue = 1;
2068:
1.5 schwarze 2069: switch (v[*pos]) {
1.112 schwarze 2070: case '\0':
1.149 schwarze 2071: return 0;
1.80 schwarze 2072: case 'n':
2073: case 'o':
1.5 schwarze 2074: (*pos)++;
1.149 schwarze 2075: return wanttrue;
1.80 schwarze 2076: case 'c':
2077: case 'd':
2078: case 'e':
2079: case 't':
1.111 schwarze 2080: case 'v':
1.5 schwarze 2081: (*pos)++;
1.149 schwarze 2082: return !wanttrue;
1.143 schwarze 2083: case 'r':
2084: cp = name = v + ++*pos;
2085: sz = roff_getname(r, &cp, ln, *pos);
2086: *pos = cp - v;
1.149 schwarze 2087: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.5 schwarze 2088: default:
2089: break;
2090: }
2091:
1.113 schwarze 2092: savepos = *pos;
1.133 schwarze 2093: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2094: return (number > 0) == wanttrue;
1.113 schwarze 2095: else if (*pos == savepos)
1.149 schwarze 2096: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2097: else
1.149 schwarze 2098: return 0;
1.5 schwarze 2099: }
2100:
1.2 schwarze 2101: static enum rofferr
1.21 schwarze 2102: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2103: {
1.30 schwarze 2104:
1.149 schwarze 2105: return ROFF_IGN;
1.21 schwarze 2106: }
2107:
2108: static enum rofferr
1.123 schwarze 2109: roff_insec(ROFF_ARGS)
2110: {
2111:
2112: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2113: ln, ppos, roff_name[tok]);
1.149 schwarze 2114: return ROFF_IGN;
1.123 schwarze 2115: }
2116:
2117: static enum rofferr
2118: roff_unsupp(ROFF_ARGS)
2119: {
2120:
2121: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2122: ln, ppos, roff_name[tok]);
1.149 schwarze 2123: return ROFF_IGN;
1.123 schwarze 2124: }
2125:
2126: static enum rofferr
1.2 schwarze 2127: roff_cond(ROFF_ARGS)
2128: {
1.46 schwarze 2129:
2130: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2131:
1.80 schwarze 2132: /*
1.35 schwarze 2133: * An `.el' has no conditional body: it will consume the value
2134: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2135: * defaults to DENY.
1.35 schwarze 2136: *
2137: * If we're not an `el', however, then evaluate the conditional.
2138: */
1.1 schwarze 2139:
1.110 schwarze 2140: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2141: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2142: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2143:
1.35 schwarze 2144: /*
2145: * An if-else will put the NEGATION of the current evaluated
2146: * conditional into the stack of rules.
2147: */
2148:
1.110 schwarze 2149: if (tok == ROFF_ie) {
1.96 schwarze 2150: if (r->rstackpos + 1 == r->rstacksz) {
2151: r->rstacksz += 16;
2152: r->rstack = mandoc_reallocarray(r->rstack,
2153: r->rstacksz, sizeof(int));
1.35 schwarze 2154: }
1.71 schwarze 2155: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2156: }
1.5 schwarze 2157:
2158: /* If the parent has false as its rule, then so do we. */
2159:
1.71 schwarze 2160: if (r->last->parent && !r->last->parent->rule)
2161: r->last->rule = 0;
1.5 schwarze 2162:
2163: /*
1.46 schwarze 2164: * Determine scope.
2165: * If there is nothing on the line after the conditional,
2166: * not even whitespace, use next-line scope.
1.5 schwarze 2167: */
1.2 schwarze 2168:
1.110 schwarze 2169: if (buf->buf[pos] == '\0') {
1.46 schwarze 2170: r->last->endspan = 2;
2171: goto out;
2172: }
2173:
1.110 schwarze 2174: while (buf->buf[pos] == ' ')
1.46 schwarze 2175: pos++;
2176:
2177: /* An opening brace requests multiline scope. */
1.2 schwarze 2178:
1.110 schwarze 2179: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2180: r->last->endspan = -1;
2181: pos += 2;
1.144 schwarze 2182: while (buf->buf[pos] == ' ')
2183: pos++;
1.46 schwarze 2184: goto out;
1.80 schwarze 2185: }
1.2 schwarze 2186:
2187: /*
1.46 schwarze 2188: * Anything else following the conditional causes
2189: * single-line scope. Warn if the scope contains
2190: * nothing but trailing whitespace.
1.2 schwarze 2191: */
2192:
1.110 schwarze 2193: if (buf->buf[pos] == '\0')
1.89 schwarze 2194: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2195: ln, ppos, roff_name[tok]);
1.2 schwarze 2196:
1.46 schwarze 2197: r->last->endspan = 1;
1.1 schwarze 2198:
1.46 schwarze 2199: out:
1.2 schwarze 2200: *offs = pos;
1.149 schwarze 2201: return ROFF_RERUN;
1.1 schwarze 2202: }
2203:
1.2 schwarze 2204: static enum rofferr
1.7 schwarze 2205: roff_ds(ROFF_ARGS)
2206: {
1.85 schwarze 2207: char *string;
2208: const char *name;
2209: size_t namesz;
1.10 schwarze 2210:
1.123 schwarze 2211: /* Ignore groff compatibility mode for now. */
2212:
2213: if (tok == ROFF_ds1)
2214: tok = ROFF_ds;
2215: else if (tok == ROFF_as1)
2216: tok = ROFF_as;
2217:
1.10 schwarze 2218: /*
1.85 schwarze 2219: * The first word is the name of the string.
2220: * If it is empty or terminated by an escape sequence,
2221: * abort the `ds' request without defining anything.
1.10 schwarze 2222: */
1.7 schwarze 2223:
1.110 schwarze 2224: name = string = buf->buf + pos;
2225: if (*name == '\0')
1.149 schwarze 2226: return ROFF_IGN;
1.7 schwarze 2227:
1.85 schwarze 2228: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2229: if (name[namesz] == '\\')
1.149 schwarze 2230: return ROFF_IGN;
1.85 schwarze 2231:
2232: /* Read past the initial double-quote, if any. */
1.110 schwarze 2233: if (*string == '"')
1.7 schwarze 2234: string++;
2235:
1.10 schwarze 2236: /* The rest is the value. */
1.85 schwarze 2237: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2238: ROFF_as == tok);
1.149 schwarze 2239: return ROFF_IGN;
1.7 schwarze 2240: }
2241:
1.77 schwarze 2242: /*
2243: * Parse a single operator, one or two characters long.
2244: * If the operator is recognized, return success and advance the
2245: * parse point, else return failure and let the parse point unchanged.
2246: */
2247: static int
2248: roff_getop(const char *v, int *pos, char *res)
2249: {
2250:
2251: *res = v[*pos];
2252:
2253: switch (*res) {
1.80 schwarze 2254: case '+':
2255: case '-':
2256: case '*':
2257: case '/':
2258: case '%':
2259: case '&':
2260: case ':':
1.77 schwarze 2261: break;
2262: case '<':
2263: switch (v[*pos + 1]) {
1.80 schwarze 2264: case '=':
1.77 schwarze 2265: *res = 'l';
2266: (*pos)++;
2267: break;
1.80 schwarze 2268: case '>':
1.77 schwarze 2269: *res = '!';
2270: (*pos)++;
2271: break;
1.80 schwarze 2272: case '?':
1.77 schwarze 2273: *res = 'i';
2274: (*pos)++;
2275: break;
2276: default:
2277: break;
2278: }
2279: break;
2280: case '>':
2281: switch (v[*pos + 1]) {
1.80 schwarze 2282: case '=':
1.77 schwarze 2283: *res = 'g';
2284: (*pos)++;
2285: break;
1.80 schwarze 2286: case '?':
1.77 schwarze 2287: *res = 'a';
2288: (*pos)++;
2289: break;
2290: default:
2291: break;
2292: }
2293: break;
2294: case '=':
2295: if ('=' == v[*pos + 1])
2296: (*pos)++;
2297: break;
2298: default:
1.149 schwarze 2299: return 0;
1.77 schwarze 2300: }
2301: (*pos)++;
2302:
1.149 schwarze 2303: return *res;
1.77 schwarze 2304: }
2305:
2306: /*
2307: * Evaluate either a parenthesized numeric expression
2308: * or a single signed integer number.
2309: */
2310: static int
1.106 schwarze 2311: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2312: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2313: {
2314:
2315: if ('(' != v[*pos])
1.149 schwarze 2316: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2317:
2318: (*pos)++;
1.133 schwarze 2319: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2320: return 0;
1.77 schwarze 2321:
1.79 schwarze 2322: /*
2323: * Omission of the closing parenthesis
2324: * is an error in validation mode,
2325: * but ignored in evaluation mode.
2326: */
2327:
1.77 schwarze 2328: if (')' == v[*pos])
2329: (*pos)++;
1.79 schwarze 2330: else if (NULL == res)
1.149 schwarze 2331: return 0;
1.77 schwarze 2332:
1.149 schwarze 2333: return 1;
1.77 schwarze 2334: }
2335:
2336: /*
2337: * Evaluate a complete numeric expression.
2338: * Proceed left to right, there is no concept of precedence.
2339: */
2340: static int
1.106 schwarze 2341: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2342: int *pos, int *res, int flags)
1.77 schwarze 2343: {
2344: int mypos, operand2;
2345: char operator;
2346:
2347: if (NULL == pos) {
2348: mypos = 0;
2349: pos = &mypos;
2350: }
2351:
1.133 schwarze 2352: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2353: while (isspace((unsigned char)v[*pos]))
2354: (*pos)++;
2355:
1.133 schwarze 2356: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2357: return 0;
1.77 schwarze 2358:
2359: while (1) {
1.133 schwarze 2360: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2361: while (isspace((unsigned char)v[*pos]))
2362: (*pos)++;
2363:
2364: if ( ! roff_getop(v, pos, &operator))
2365: break;
2366:
1.133 schwarze 2367: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2368: while (isspace((unsigned char)v[*pos]))
2369: (*pos)++;
2370:
1.133 schwarze 2371: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2372: return 0;
1.77 schwarze 2373:
1.133 schwarze 2374: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2375: while (isspace((unsigned char)v[*pos]))
2376: (*pos)++;
1.79 schwarze 2377:
2378: if (NULL == res)
2379: continue;
1.77 schwarze 2380:
2381: switch (operator) {
1.80 schwarze 2382: case '+':
1.77 schwarze 2383: *res += operand2;
2384: break;
1.80 schwarze 2385: case '-':
1.77 schwarze 2386: *res -= operand2;
2387: break;
1.80 schwarze 2388: case '*':
1.77 schwarze 2389: *res *= operand2;
2390: break;
1.80 schwarze 2391: case '/':
1.116 schwarze 2392: if (operand2 == 0) {
1.106 schwarze 2393: mandoc_msg(MANDOCERR_DIVZERO,
2394: r->parse, ln, *pos, v);
2395: *res = 0;
2396: break;
2397: }
1.77 schwarze 2398: *res /= operand2;
2399: break;
1.80 schwarze 2400: case '%':
1.116 schwarze 2401: if (operand2 == 0) {
2402: mandoc_msg(MANDOCERR_DIVZERO,
2403: r->parse, ln, *pos, v);
2404: *res = 0;
2405: break;
2406: }
1.77 schwarze 2407: *res %= operand2;
2408: break;
1.80 schwarze 2409: case '<':
1.77 schwarze 2410: *res = *res < operand2;
2411: break;
1.80 schwarze 2412: case '>':
1.77 schwarze 2413: *res = *res > operand2;
2414: break;
1.80 schwarze 2415: case 'l':
1.77 schwarze 2416: *res = *res <= operand2;
2417: break;
1.80 schwarze 2418: case 'g':
1.77 schwarze 2419: *res = *res >= operand2;
2420: break;
1.80 schwarze 2421: case '=':
1.77 schwarze 2422: *res = *res == operand2;
2423: break;
1.80 schwarze 2424: case '!':
1.77 schwarze 2425: *res = *res != operand2;
2426: break;
1.80 schwarze 2427: case '&':
1.77 schwarze 2428: *res = *res && operand2;
2429: break;
1.80 schwarze 2430: case ':':
1.77 schwarze 2431: *res = *res || operand2;
2432: break;
1.80 schwarze 2433: case 'i':
1.77 schwarze 2434: if (operand2 < *res)
2435: *res = operand2;
2436: break;
1.80 schwarze 2437: case 'a':
1.77 schwarze 2438: if (operand2 > *res)
2439: *res = operand2;
2440: break;
2441: default:
2442: abort();
2443: }
2444: }
1.149 schwarze 2445: return 1;
1.77 schwarze 2446: }
2447:
1.138 schwarze 2448: /* --- register management ------------------------------------------------ */
2449:
1.52 schwarze 2450: void
1.60 schwarze 2451: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2452: {
1.52 schwarze 2453: struct roffreg *reg;
2454:
2455: /* Search for an existing register with the same name. */
2456: reg = r->regtab;
2457:
2458: while (reg && strcmp(name, reg->key.p))
2459: reg = reg->next;
1.41 schwarze 2460:
1.52 schwarze 2461: if (NULL == reg) {
2462: /* Create a new register. */
2463: reg = mandoc_malloc(sizeof(struct roffreg));
2464: reg->key.p = mandoc_strdup(name);
2465: reg->key.sz = strlen(name);
1.60 schwarze 2466: reg->val = 0;
1.52 schwarze 2467: reg->next = r->regtab;
2468: r->regtab = reg;
2469: }
2470:
1.60 schwarze 2471: if ('+' == sign)
2472: reg->val += val;
2473: else if ('-' == sign)
2474: reg->val -= val;
2475: else
2476: reg->val = val;
1.41 schwarze 2477: }
2478:
1.65 schwarze 2479: /*
2480: * Handle some predefined read-only number registers.
2481: * For now, return -1 if the requested register is not predefined;
2482: * in case a predefined read-only register having the value -1
2483: * were to turn up, another special value would have to be chosen.
2484: */
2485: static int
1.145 schwarze 2486: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2487: {
2488:
2489: switch (*name) {
1.145 schwarze 2490: case '$': /* Number of arguments of the last macro evaluated. */
1.149 schwarze 2491: return r->argc;
1.80 schwarze 2492: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2493: return 0;
1.80 schwarze 2494: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2495: return 1;
1.80 schwarze 2496: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2497: return 24;
1.80 schwarze 2498: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2499: return 0;
1.80 schwarze 2500: case 'T': /* Some output device is always defined. */
1.149 schwarze 2501: return 1;
1.80 schwarze 2502: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2503: return 40;
1.65 schwarze 2504: default:
1.149 schwarze 2505: return -1;
1.65 schwarze 2506: }
2507: }
2508:
1.53 schwarze 2509: int
1.52 schwarze 2510: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2511: {
1.52 schwarze 2512: struct roffreg *reg;
1.65 schwarze 2513: int val;
2514:
2515: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.145 schwarze 2516: val = roff_getregro(r, name + 1);
1.65 schwarze 2517: if (-1 != val)
1.149 schwarze 2518: return val;
1.65 schwarze 2519: }
1.52 schwarze 2520:
2521: for (reg = r->regtab; reg; reg = reg->next)
2522: if (0 == strcmp(name, reg->key.p))
1.149 schwarze 2523: return reg->val;
1.53 schwarze 2524:
1.149 schwarze 2525: return 0;
1.53 schwarze 2526: }
2527:
2528: static int
2529: roff_getregn(const struct roff *r, const char *name, size_t len)
2530: {
2531: struct roffreg *reg;
1.65 schwarze 2532: int val;
2533:
2534: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2535: val = roff_getregro(r, name + 1);
1.65 schwarze 2536: if (-1 != val)
1.149 schwarze 2537: return val;
1.65 schwarze 2538: }
1.53 schwarze 2539:
2540: for (reg = r->regtab; reg; reg = reg->next)
2541: if (len == reg->key.sz &&
2542: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2543: return reg->val;
1.143 schwarze 2544:
1.149 schwarze 2545: return 0;
1.143 schwarze 2546: }
2547:
2548: static int
2549: roff_hasregn(const struct roff *r, const char *name, size_t len)
2550: {
2551: struct roffreg *reg;
2552: int val;
2553:
2554: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2555: val = roff_getregro(r, name + 1);
1.143 schwarze 2556: if (-1 != val)
1.149 schwarze 2557: return 1;
1.143 schwarze 2558: }
2559:
2560: for (reg = r->regtab; reg; reg = reg->next)
2561: if (len == reg->key.sz &&
2562: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2563: return 1;
1.41 schwarze 2564:
1.149 schwarze 2565: return 0;
1.41 schwarze 2566: }
2567:
1.52 schwarze 2568: static void
2569: roff_freereg(struct roffreg *reg)
1.41 schwarze 2570: {
1.52 schwarze 2571: struct roffreg *old_reg;
1.41 schwarze 2572:
1.52 schwarze 2573: while (NULL != reg) {
2574: free(reg->key.p);
2575: old_reg = reg;
2576: reg = reg->next;
2577: free(old_reg);
2578: }
1.41 schwarze 2579: }
1.7 schwarze 2580:
2581: static enum rofferr
1.6 schwarze 2582: roff_nr(ROFF_ARGS)
1.1 schwarze 2583: {
1.85 schwarze 2584: char *key, *val;
2585: size_t keysz;
1.37 schwarze 2586: int iv;
1.60 schwarze 2587: char sign;
1.6 schwarze 2588:
1.110 schwarze 2589: key = val = buf->buf + pos;
2590: if (*key == '\0')
1.149 schwarze 2591: return ROFF_IGN;
1.85 schwarze 2592:
2593: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2594: if (key[keysz] == '\\')
1.149 schwarze 2595: return ROFF_IGN;
1.85 schwarze 2596: key[keysz] = '\0';
1.6 schwarze 2597:
1.60 schwarze 2598: sign = *val;
1.110 schwarze 2599: if (sign == '+' || sign == '-')
1.60 schwarze 2600: val++;
2601:
1.133 schwarze 2602: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2603: roff_setreg(r, key, iv, sign);
1.1 schwarze 2604:
1.149 schwarze 2605: return ROFF_IGN;
1.76 schwarze 2606: }
2607:
2608: static enum rofferr
2609: roff_rr(ROFF_ARGS)
2610: {
2611: struct roffreg *reg, **prev;
1.85 schwarze 2612: char *name, *cp;
2613: size_t namesz;
1.76 schwarze 2614:
1.110 schwarze 2615: name = cp = buf->buf + pos;
2616: if (*name == '\0')
1.149 schwarze 2617: return ROFF_IGN;
1.85 schwarze 2618: namesz = roff_getname(r, &cp, ln, pos);
2619: name[namesz] = '\0';
1.76 schwarze 2620:
2621: prev = &r->regtab;
2622: while (1) {
2623: reg = *prev;
1.110 schwarze 2624: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2625: break;
2626: prev = ®->next;
2627: }
1.110 schwarze 2628: if (reg != NULL) {
1.76 schwarze 2629: *prev = reg->next;
2630: free(reg->key.p);
2631: free(reg);
2632: }
1.149 schwarze 2633: return ROFF_IGN;
1.29 schwarze 2634: }
2635:
1.138 schwarze 2636: /* --- handler functions for roff requests -------------------------------- */
2637:
1.29 schwarze 2638: static enum rofferr
2639: roff_rm(ROFF_ARGS)
2640: {
2641: const char *name;
2642: char *cp;
1.85 schwarze 2643: size_t namesz;
1.29 schwarze 2644:
1.110 schwarze 2645: cp = buf->buf + pos;
2646: while (*cp != '\0') {
1.85 schwarze 2647: name = cp;
1.110 schwarze 2648: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2649: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.110 schwarze 2650: if (name[namesz] == '\\')
1.85 schwarze 2651: break;
1.29 schwarze 2652: }
1.149 schwarze 2653: return ROFF_IGN;
1.51 schwarze 2654: }
2655:
2656: static enum rofferr
2657: roff_it(ROFF_ARGS)
2658: {
2659: int iv;
2660:
2661: /* Parse the number of lines. */
1.133 schwarze 2662:
2663: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2664: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2665: ln, ppos, buf->buf + 1);
1.149 schwarze 2666: return ROFF_IGN;
1.51 schwarze 2667: }
2668:
1.134 schwarze 2669: while (isspace((unsigned char)buf->buf[pos]))
2670: pos++;
2671:
2672: /*
2673: * Arm the input line trap.
2674: * Special-casing "an-trap" is an ugly workaround to cope
2675: * with DocBook stupidly fiddling with man(7) internals.
2676: */
1.133 schwarze 2677:
1.51 schwarze 2678: roffit_lines = iv;
1.134 schwarze 2679: roffit_macro = mandoc_strdup(iv != 1 ||
2680: strcmp(buf->buf + pos, "an-trap") ?
2681: buf->buf + pos : "br");
1.149 schwarze 2682: return ROFF_IGN;
1.47 schwarze 2683: }
2684:
2685: static enum rofferr
2686: roff_Dd(ROFF_ARGS)
2687: {
2688: const char *const *cp;
2689:
1.99 schwarze 2690: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.47 schwarze 2691: for (cp = __mdoc_reserved; *cp; cp++)
2692: roff_setstr(r, *cp, NULL, 0);
2693:
1.99 schwarze 2694: if (r->format == 0)
2695: r->format = MPARSE_MDOC;
2696:
1.149 schwarze 2697: return ROFF_CONT;
1.47 schwarze 2698: }
2699:
2700: static enum rofferr
2701: roff_TH(ROFF_ARGS)
2702: {
2703: const char *const *cp;
2704:
1.99 schwarze 2705: if ((r->options & MPARSE_QUICK) == 0)
1.47 schwarze 2706: for (cp = __man_reserved; *cp; cp++)
2707: roff_setstr(r, *cp, NULL, 0);
2708:
1.99 schwarze 2709: if (r->format == 0)
2710: r->format = MPARSE_MAN;
2711:
1.149 schwarze 2712: return ROFF_CONT;
1.14 schwarze 2713: }
2714:
2715: static enum rofferr
1.27 schwarze 2716: roff_TE(ROFF_ARGS)
2717: {
2718:
2719: if (NULL == r->tbl)
1.94 schwarze 2720: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2721: ln, ppos, "TE");
1.130 schwarze 2722: else if ( ! tbl_end(&r->tbl)) {
2723: free(buf->buf);
2724: buf->buf = mandoc_strdup(".sp");
2725: buf->sz = 4;
1.149 schwarze 2726: return ROFF_REPARSE;
1.130 schwarze 2727: }
1.149 schwarze 2728: return ROFF_IGN;
1.27 schwarze 2729: }
2730:
2731: static enum rofferr
2732: roff_T_(ROFF_ARGS)
2733: {
2734:
2735: if (NULL == r->tbl)
1.94 schwarze 2736: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2737: ln, ppos, "T&");
1.27 schwarze 2738: else
1.168 schwarze 2739: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 2740:
1.149 schwarze 2741: return ROFF_IGN;
1.27 schwarze 2742: }
2743:
1.102 schwarze 2744: /*
2745: * Handle in-line equation delimiters.
2746: */
2747: static enum rofferr
1.110 schwarze 2748: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2749: {
1.105 schwarze 2750: char *cp1, *cp2;
2751: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2752:
1.102 schwarze 2753: /*
2754: * Outside equations, look for an opening delimiter.
2755: * If we are inside an equation, we already know it is
2756: * in-line, or this function wouldn't have been called;
2757: * so look for a closing delimiter.
2758: */
2759:
1.110 schwarze 2760: cp1 = buf->buf + pos;
1.102 schwarze 2761: cp2 = strchr(cp1, r->eqn == NULL ?
2762: r->last_eqn->odelim : r->last_eqn->cdelim);
2763: if (cp2 == NULL)
1.149 schwarze 2764: return ROFF_CONT;
1.102 schwarze 2765:
1.105 schwarze 2766: *cp2++ = '\0';
2767: bef_pr = bef_nl = aft_nl = aft_pr = "";
2768:
2769: /* Handle preceding text, protecting whitespace. */
2770:
1.110 schwarze 2771: if (*buf->buf != '\0') {
1.105 schwarze 2772: if (r->eqn == NULL)
2773: bef_pr = "\\&";
2774: bef_nl = "\n";
2775: }
2776:
2777: /*
2778: * Prepare replacing the delimiter with an equation macro
2779: * and drop leading white space from the equation.
2780: */
1.102 schwarze 2781:
1.105 schwarze 2782: if (r->eqn == NULL) {
2783: while (*cp2 == ' ')
2784: cp2++;
2785: mac = ".EQ";
2786: } else
2787: mac = ".EN";
2788:
2789: /* Handle following text, protecting whitespace. */
2790:
2791: if (*cp2 != '\0') {
2792: aft_nl = "\n";
2793: if (r->eqn != NULL)
2794: aft_pr = "\\&";
2795: }
2796:
2797: /* Do the actual replacement. */
2798:
1.110 schwarze 2799: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2800: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2801: free(buf->buf);
2802: buf->buf = cp1;
1.102 schwarze 2803:
2804: /* Toggle the in-line state of the eqn subsystem. */
2805:
2806: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2807: return ROFF_REPARSE;
1.41 schwarze 2808: }
2809:
1.107 schwarze 2810: static enum rofferr
2811: roff_EQ(ROFF_ARGS)
1.32 schwarze 2812: {
1.41 schwarze 2813: struct eqn_node *e;
1.32 schwarze 2814:
1.110 schwarze 2815: assert(r->eqn == NULL);
1.107 schwarze 2816: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2817:
1.102 schwarze 2818: if (r->last_eqn) {
1.32 schwarze 2819: r->last_eqn->next = e;
1.102 schwarze 2820: e->delim = r->last_eqn->delim;
2821: e->odelim = r->last_eqn->odelim;
2822: e->cdelim = r->last_eqn->cdelim;
2823: } else
1.32 schwarze 2824: r->first_eqn = r->last_eqn = e;
2825:
2826: r->eqn = r->last_eqn = e;
1.41 schwarze 2827:
1.110 schwarze 2828: if (buf->buf[pos] != '\0')
1.107 schwarze 2829: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2830: ".EQ %s", buf->buf + pos);
1.41 schwarze 2831:
1.149 schwarze 2832: return ROFF_IGN;
1.32 schwarze 2833: }
2834:
2835: static enum rofferr
2836: roff_EN(ROFF_ARGS)
2837: {
2838:
1.94 schwarze 2839: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.149 schwarze 2840: return ROFF_IGN;
1.32 schwarze 2841: }
2842:
2843: static enum rofferr
1.27 schwarze 2844: roff_TS(ROFF_ARGS)
2845: {
1.49 schwarze 2846: struct tbl_node *tbl;
1.27 schwarze 2847:
2848: if (r->tbl) {
1.94 schwarze 2849: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2850: ln, ppos, "TS breaks TS");
1.41 schwarze 2851: tbl_end(&r->tbl);
1.27 schwarze 2852: }
2853:
1.49 schwarze 2854: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2855:
2856: if (r->last_tbl)
1.49 schwarze 2857: r->last_tbl->next = tbl;
1.27 schwarze 2858: else
1.49 schwarze 2859: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2860:
1.49 schwarze 2861: r->tbl = r->last_tbl = tbl;
1.169 schwarze 2862: return ROFF_IGN;
2863: }
2864:
2865: static enum rofferr
2866: roff_onearg(ROFF_ARGS)
2867: {
2868: struct roff_node *n;
2869: char *cp;
1.177 schwarze 2870: int npos;
1.169 schwarze 2871:
1.174 schwarze 2872: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
2873: (tok == ROFF_sp || tok == ROFF_ti))
2874: man_breakscope(r->man, tok);
2875:
1.177 schwarze 2876: if (tok == ROFF_ce && roffce_node != NULL) {
2877: r->man->last = roffce_node;
2878: r->man->next = ROFF_NEXT_SIBLING;
2879: }
2880:
1.169 schwarze 2881: roff_elem_alloc(r->man, ln, ppos, tok);
2882: n = r->man->last;
2883:
2884: cp = buf->buf + pos;
2885: if (*cp != '\0') {
2886: while (*cp != '\0' && *cp != ' ')
2887: cp++;
2888: while (*cp == ' ')
2889: *cp++ = '\0';
2890: if (*cp != '\0')
2891: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2892: r->parse, ln, cp - buf->buf,
2893: "%s ... %s", roff_name[tok], cp);
2894: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 2895: }
2896:
1.177 schwarze 2897: if (tok == ROFF_ce) {
2898: if (r->man->last->tok == ROFF_ce) {
2899: roff_word_alloc(r->man, ln, pos, "1");
2900: r->man->last->flags |= NODE_NOSRC;
2901: }
2902: npos = 0;
2903: if (roff_evalnum(r, ln, r->man->last->string, &npos,
2904: &roffce_lines, 0) == 0) {
2905: mandoc_vmsg(MANDOCERR_CE_NONUM,
2906: r->parse, ln, pos, "ce %s", buf->buf + pos);
2907: roffce_lines = 1;
2908: }
2909: if (roffce_lines < 1) {
2910: r->man->last = r->man->last->parent;
2911: roffce_node = NULL;
2912: roffce_lines = 0;
2913: } else
2914: roffce_node = r->man->last->parent;
2915: } else {
2916: n->flags |= NODE_VALID | NODE_ENDED;
2917: r->man->last = n;
2918: }
2919: n->flags |= NODE_LINE;
1.172 schwarze 2920: r->man->next = ROFF_NEXT_SIBLING;
2921: return ROFF_IGN;
2922: }
2923:
2924: static enum rofferr
2925: roff_manyarg(ROFF_ARGS)
2926: {
2927: struct roff_node *n;
2928: char *sp, *ep;
2929:
2930: roff_elem_alloc(r->man, ln, ppos, tok);
2931: n = r->man->last;
2932:
2933: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
2934: while (*ep != '\0' && *ep != ' ')
2935: ep++;
2936: while (*ep == ' ')
2937: *ep++ = '\0';
2938: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 2939: }
2940:
2941: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2942: r->man->last = n;
2943: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 2944: return ROFF_IGN;
1.123 schwarze 2945: }
2946:
2947: static enum rofferr
1.168 schwarze 2948: roff_br(ROFF_ARGS)
1.123 schwarze 2949: {
1.174 schwarze 2950: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
2951: man_breakscope(r->man, ROFF_br);
1.168 schwarze 2952: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
2953: if (buf->buf[pos] != '\0')
2954: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2955: "%s %s", roff_name[tok], buf->buf + pos);
2956: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2957: r->man->next = ROFF_NEXT_SIBLING;
2958: return ROFF_IGN;
1.27 schwarze 2959: }
2960:
2961: static enum rofferr
1.48 schwarze 2962: roff_cc(ROFF_ARGS)
2963: {
2964: const char *p;
2965:
1.110 schwarze 2966: p = buf->buf + pos;
1.48 schwarze 2967:
1.110 schwarze 2968: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 2969: r->control = '\0';
1.48 schwarze 2970:
1.110 schwarze 2971: if (*p != '\0')
1.132 schwarze 2972: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2973: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 2974:
1.149 schwarze 2975: return ROFF_IGN;
1.48 schwarze 2976: }
2977:
2978: static enum rofferr
1.175 schwarze 2979: roff_ec(ROFF_ARGS)
2980: {
2981: const char *p;
2982:
2983: p = buf->buf + pos;
2984: if (*p == '\0')
2985: r->escape = '\\';
2986: else {
2987: r->escape = *p;
2988: if (*++p != '\0')
2989: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2990: ln, p - buf->buf, "ec ... %s", p);
2991: }
2992: return ROFF_IGN;
2993: }
2994:
2995: static enum rofferr
2996: roff_eo(ROFF_ARGS)
2997: {
2998: r->escape = '\0';
2999: if (buf->buf[pos] != '\0')
3000: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3001: ln, pos, "eo %s", buf->buf + pos);
3002: return ROFF_IGN;
3003: }
3004:
3005: static enum rofferr
1.42 schwarze 3006: roff_tr(ROFF_ARGS)
3007: {
3008: const char *p, *first, *second;
3009: size_t fsz, ssz;
3010: enum mandoc_esc esc;
3011:
1.110 schwarze 3012: p = buf->buf + pos;
1.42 schwarze 3013:
1.110 schwarze 3014: if (*p == '\0') {
1.132 schwarze 3015: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 3016: return ROFF_IGN;
1.42 schwarze 3017: }
3018:
1.110 schwarze 3019: while (*p != '\0') {
1.42 schwarze 3020: fsz = ssz = 1;
3021:
3022: first = p++;
1.110 schwarze 3023: if (*first == '\\') {
1.42 schwarze 3024: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3025: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3026: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3027: ln, (int)(p - buf->buf), first);
1.149 schwarze 3028: return ROFF_IGN;
1.42 schwarze 3029: }
3030: fsz = (size_t)(p - first);
3031: }
3032:
3033: second = p++;
1.110 schwarze 3034: if (*second == '\\') {
1.42 schwarze 3035: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3036: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3037: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3038: ln, (int)(p - buf->buf), second);
1.149 schwarze 3039: return ROFF_IGN;
1.42 schwarze 3040: }
3041: ssz = (size_t)(p - second);
1.110 schwarze 3042: } else if (*second == '\0') {
1.132 schwarze 3043: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3044: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3045: second = " ";
3046: p--;
3047: }
3048:
3049: if (fsz > 1) {
1.80 schwarze 3050: roff_setstrn(&r->xmbtab, first, fsz,
3051: second, ssz, 0);
1.42 schwarze 3052: continue;
3053: }
3054:
1.110 schwarze 3055: if (r->xtab == NULL)
1.80 schwarze 3056: r->xtab = mandoc_calloc(128,
3057: sizeof(struct roffstr));
1.42 schwarze 3058:
3059: free(r->xtab[(int)*first].p);
3060: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3061: r->xtab[(int)*first].sz = ssz;
3062: }
3063:
1.149 schwarze 3064: return ROFF_IGN;
1.42 schwarze 3065: }
3066:
3067: static enum rofferr
1.178 ! schwarze 3068: roff_rn(ROFF_ARGS)
! 3069: {
! 3070: const char *value;
! 3071: char *oldn, *newn, *end;
! 3072: size_t oldsz, newsz;
! 3073:
! 3074: oldn = newn = buf->buf + pos;
! 3075: if (*oldn == '\0')
! 3076: return ROFF_IGN;
! 3077:
! 3078: oldsz = roff_getname(r, &newn, ln, pos);
! 3079: if (oldn[oldsz] == '\\' || *newn == '\0')
! 3080: return ROFF_IGN;
! 3081:
! 3082: end = newn;
! 3083: newsz = roff_getname(r, &end, ln, newn - buf->buf);
! 3084: if (newsz == 0)
! 3085: return ROFF_IGN;
! 3086:
! 3087: /*
! 3088: * Rename a user-defined macro bearing the old name,
! 3089: * overriding an existing renamed high-level macro
! 3090: * bearing the new name, if that exists.
! 3091: */
! 3092:
! 3093: if ((value = roff_getstrn(r, oldn, oldsz)) != NULL) {
! 3094: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
! 3095: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
! 3096: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
! 3097: return ROFF_IGN;
! 3098: }
! 3099:
! 3100: /*
! 3101: * Rename a high-level macro bearing the old name,
! 3102: * either renaming it a second time if it was already
! 3103: * renamed before, or renaming it for the first time.
! 3104: * In both cases, override an existing user-defined
! 3105: * macro bearing the new name, if that exists.
! 3106: */
! 3107:
! 3108: if ((value = roff_getrenn(r, oldn, oldsz)) != NULL) {
! 3109: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
! 3110: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
! 3111: } else
! 3112: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
! 3113: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
! 3114: return ROFF_IGN;
! 3115: }
! 3116:
! 3117: static enum rofferr
1.14 schwarze 3118: roff_so(ROFF_ARGS)
3119: {
1.121 schwarze 3120: char *name, *cp;
1.15 schwarze 3121:
1.110 schwarze 3122: name = buf->buf + pos;
1.97 schwarze 3123: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3124:
1.22 schwarze 3125: /*
3126: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3127: * opening anything that's not in our cwd or anything beneath
3128: * it. Thus, explicitly disallow traversing up the file-system
3129: * or using absolute paths.
3130: */
3131:
1.110 schwarze 3132: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3133: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3134: ".so %s", name);
1.121 schwarze 3135: buf->sz = mandoc_asprintf(&cp,
3136: ".sp\nSee the file %s.\n.sp", name) + 1;
3137: free(buf->buf);
3138: buf->buf = cp;
3139: *offs = 0;
1.149 schwarze 3140: return ROFF_REPARSE;
1.14 schwarze 3141: }
3142:
3143: *offs = pos;
1.149 schwarze 3144: return ROFF_SO;
1.7 schwarze 3145: }
3146:
1.138 schwarze 3147: /* --- user defined strings and macros ------------------------------------ */
3148:
1.16 schwarze 3149: static enum rofferr
3150: roff_userdef(ROFF_ARGS)
1.12 schwarze 3151: {
1.135 schwarze 3152: const char *arg[9], *ap;
1.16 schwarze 3153: char *cp, *n1, *n2;
1.164 schwarze 3154: int expand_count, i, ib, ie;
1.135 schwarze 3155: size_t asz, rsz;
1.12 schwarze 3156:
1.16 schwarze 3157: /*
3158: * Collect pointers to macro argument strings
1.61 schwarze 3159: * and NUL-terminate them.
1.16 schwarze 3160: */
1.135 schwarze 3161:
1.145 schwarze 3162: r->argc = 0;
1.110 schwarze 3163: cp = buf->buf + pos;
1.145 schwarze 3164: for (i = 0; i < 9; i++) {
3165: if (*cp == '\0')
3166: arg[i] = "";
3167: else {
3168: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3169: r->argc = i + 1;
3170: }
3171: }
1.16 schwarze 3172:
3173: /*
3174: * Expand macro arguments.
1.12 schwarze 3175: */
1.135 schwarze 3176:
3177: buf->sz = strlen(r->current_string) + 1;
1.164 schwarze 3178: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.135 schwarze 3179: memcpy(n1, r->current_string, buf->sz);
1.164 schwarze 3180: expand_count = 0;
1.135 schwarze 3181: while (*cp != '\0') {
3182:
3183: /* Scan ahead for the next argument invocation. */
3184:
3185: if (*cp++ != '\\')
3186: continue;
3187: if (*cp++ != '$')
3188: continue;
1.146 schwarze 3189: if (*cp == '*') { /* \\$* inserts all arguments */
3190: ib = 0;
3191: ie = r->argc - 1;
3192: } else { /* \\$1 .. \\$9 insert one argument */
3193: ib = ie = *cp - '1';
3194: if (ib < 0 || ib > 8)
3195: continue;
3196: }
1.135 schwarze 3197: cp -= 2;
1.164 schwarze 3198:
3199: /*
3200: * Prevent infinite recursion.
3201: */
3202:
3203: if (cp >= n2)
3204: expand_count = 1;
3205: else if (++expand_count > EXPAND_LIMIT) {
3206: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3207: ln, (int)(cp - n1), NULL);
1.165 schwarze 3208: free(buf->buf);
3209: buf->buf = n1;
1.164 schwarze 3210: return ROFF_IGN;
3211: }
1.135 schwarze 3212:
3213: /*
3214: * Determine the size of the expanded argument,
3215: * taking escaping of quotes into account.
3216: */
3217:
1.146 schwarze 3218: asz = ie > ib ? ie - ib : 0; /* for blanks */
3219: for (i = ib; i <= ie; i++) {
3220: for (ap = arg[i]; *ap != '\0'; ap++) {
3221: asz++;
3222: if (*ap == '"')
3223: asz += 3;
3224: }
1.135 schwarze 3225: }
3226: if (asz != 3) {
3227:
3228: /*
3229: * Determine the size of the rest of the
3230: * unexpanded macro, including the NUL.
3231: */
3232:
3233: rsz = buf->sz - (cp - n1) - 3;
3234:
3235: /*
3236: * When shrinking, move before
3237: * releasing the storage.
3238: */
3239:
3240: if (asz < 3)
3241: memmove(cp + asz, cp + 3, rsz);
3242:
3243: /*
3244: * Resize the storage for the macro
3245: * and readjust the parse pointer.
3246: */
3247:
3248: buf->sz += asz - 3;
3249: n2 = mandoc_realloc(n1, buf->sz);
3250: cp = n2 + (cp - n1);
3251: n1 = n2;
3252:
3253: /*
3254: * When growing, make room
3255: * for the expanded argument.
3256: */
3257:
3258: if (asz > 3)
3259: memmove(cp + asz, cp + 3, rsz);
3260: }
3261:
3262: /* Copy the expanded argument, escaping quotes. */
3263:
3264: n2 = cp;
1.146 schwarze 3265: for (i = ib; i <= ie; i++) {
3266: for (ap = arg[i]; *ap != '\0'; ap++) {
3267: if (*ap == '"') {
3268: memcpy(n2, "\\(dq", 4);
3269: n2 += 4;
3270: } else
3271: *n2++ = *ap;
3272: }
3273: if (i < ie)
3274: *n2++ = ' ';
1.16 schwarze 3275: }
1.12 schwarze 3276: }
3277:
1.16 schwarze 3278: /*
3279: * Replace the macro invocation
3280: * by the expanded macro.
3281: */
1.135 schwarze 3282:
1.110 schwarze 3283: free(buf->buf);
3284: buf->buf = n1;
1.120 schwarze 3285: *offs = 0;
1.16 schwarze 3286:
1.149 schwarze 3287: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3288: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3289: }
1.28 schwarze 3290:
1.178 ! schwarze 3291: /*
! 3292: * Calling a high-level macro that was renamed with .rn.
! 3293: * r->current_string has already been set up by roff_parse().
! 3294: */
! 3295: static enum rofferr
! 3296: roff_renamed(ROFF_ARGS)
! 3297: {
! 3298: char *nbuf;
! 3299:
! 3300: buf->sz = mandoc_asprintf(&nbuf, ".%s %s", r->current_string,
! 3301: buf->buf + pos) + 1;
! 3302: free(buf->buf);
! 3303: buf->buf = nbuf;
! 3304: return ROFF_CONT;
! 3305: }
! 3306:
1.85 schwarze 3307: static size_t
1.28 schwarze 3308: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3309: {
3310: char *name, *cp;
1.85 schwarze 3311: size_t namesz;
1.28 schwarze 3312:
3313: name = *cpp;
3314: if ('\0' == *name)
1.149 schwarze 3315: return 0;
1.28 schwarze 3316:
1.85 schwarze 3317: /* Read until end of name and terminate it with NUL. */
3318: for (cp = name; 1; cp++) {
3319: if ('\0' == *cp || ' ' == *cp) {
3320: namesz = cp - name;
3321: break;
3322: }
1.28 schwarze 3323: if ('\\' != *cp)
3324: continue;
1.88 schwarze 3325: namesz = cp - name;
3326: if ('{' == cp[1] || '}' == cp[1])
3327: break;
1.28 schwarze 3328: cp++;
3329: if ('\\' == *cp)
3330: continue;
1.97 schwarze 3331: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3332: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3333: mandoc_escape((const char **)&cp, NULL, NULL);
3334: break;
1.28 schwarze 3335: }
3336:
3337: /* Read past spaces. */
3338: while (' ' == *cp)
3339: cp++;
3340:
3341: *cpp = cp;
1.149 schwarze 3342: return namesz;
1.28 schwarze 3343: }
3344:
1.16 schwarze 3345: /*
3346: * Store *string into the user-defined string called *name.
3347: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3348: * append == 0: replace mode
3349: * append == 1: single-line append mode
3350: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3351: */
1.8 schwarze 3352: static void
1.16 schwarze 3353: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3354: int append)
1.7 schwarze 3355: {
1.42 schwarze 3356:
3357: roff_setstrn(&r->strtab, name, strlen(name), string,
1.80 schwarze 3358: string ? strlen(string) : 0, append);
1.42 schwarze 3359: }
3360:
3361: static void
3362: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3363: const char *string, size_t stringsz, int append)
1.42 schwarze 3364: {
3365: struct roffkv *n;
3366: char *c;
3367: int i;
3368: size_t oldch, newch;
1.7 schwarze 3369:
1.16 schwarze 3370: /* Search for an existing string with the same name. */
1.42 schwarze 3371: n = *r;
3372:
1.84 schwarze 3373: while (n && (namesz != n->key.sz ||
3374: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3375: n = n->next;
1.8 schwarze 3376:
3377: if (NULL == n) {
1.16 schwarze 3378: /* Create a new string table entry. */
1.42 schwarze 3379: n = mandoc_malloc(sizeof(struct roffkv));
3380: n->key.p = mandoc_strndup(name, namesz);
3381: n->key.sz = namesz;
3382: n->val.p = NULL;
3383: n->val.sz = 0;
3384: n->next = *r;
3385: *r = n;
1.66 schwarze 3386: } else if (0 == append) {
1.42 schwarze 3387: free(n->val.p);
3388: n->val.p = NULL;
3389: n->val.sz = 0;
1.16 schwarze 3390: }
3391:
3392: if (NULL == string)
3393: return;
3394:
3395: /*
3396: * One additional byte for the '\n' in multiline mode,
3397: * and one for the terminating '\0'.
3398: */
1.66 schwarze 3399: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3400:
3401: if (NULL == n->val.p) {
3402: n->val.p = mandoc_malloc(newch);
3403: *n->val.p = '\0';
1.16 schwarze 3404: oldch = 0;
3405: } else {
1.42 schwarze 3406: oldch = n->val.sz;
3407: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3408: }
3409:
3410: /* Skip existing content in the destination buffer. */
1.42 schwarze 3411: c = n->val.p + (int)oldch;
1.16 schwarze 3412:
3413: /* Append new content to the destination buffer. */
1.42 schwarze 3414: i = 0;
3415: while (i < (int)stringsz) {
1.16 schwarze 3416: /*
3417: * Rudimentary roff copy mode:
3418: * Handle escaped backslashes.
3419: */
1.42 schwarze 3420: if ('\\' == string[i] && '\\' == string[i + 1])
3421: i++;
3422: *c++ = string[i++];
1.16 schwarze 3423: }
1.8 schwarze 3424:
1.16 schwarze 3425: /* Append terminating bytes. */
1.66 schwarze 3426: if (1 < append)
1.16 schwarze 3427: *c++ = '\n';
1.42 schwarze 3428:
1.16 schwarze 3429: *c = '\0';
1.42 schwarze 3430: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3431: }
3432:
1.8 schwarze 3433: static const char *
3434: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.7 schwarze 3435: {
1.42 schwarze 3436: const struct roffkv *n;
1.64 schwarze 3437: int i;
1.7 schwarze 3438:
1.42 schwarze 3439: for (n = r->strtab; n; n = n->next)
1.80 schwarze 3440: if (0 == strncmp(name, n->key.p, len) &&
3441: '\0' == n->key.p[(int)len])
1.149 schwarze 3442: return n->val.p;
1.64 schwarze 3443:
3444: for (i = 0; i < PREDEFS_MAX; i++)
3445: if (0 == strncmp(name, predefs[i].name, len) &&
3446: '\0' == predefs[i].name[(int)len])
1.149 schwarze 3447: return predefs[i].str;
1.178 ! schwarze 3448:
! 3449: return NULL;
! 3450: }
! 3451:
! 3452: /*
! 3453: * Check whether *name is the renamed name of a high-level macro.
! 3454: * Return the standard name, or NULL if it is not.
! 3455: */
! 3456: static const char *
! 3457: roff_getrenn(const struct roff *r, const char *name, size_t len)
! 3458: {
! 3459: const struct roffkv *n;
! 3460:
! 3461: for (n = r->rentab; n; n = n->next)
! 3462: if (0 == strncmp(name, n->key.p, len) &&
! 3463: '\0' == n->key.p[(int)len])
! 3464: return n->val.p;
1.8 schwarze 3465:
1.149 schwarze 3466: return NULL;
1.7 schwarze 3467: }
3468:
1.8 schwarze 3469: static void
1.42 schwarze 3470: roff_freestr(struct roffkv *r)
1.7 schwarze 3471: {
1.42 schwarze 3472: struct roffkv *n, *nn;
1.7 schwarze 3473:
1.42 schwarze 3474: for (n = r; n; n = nn) {
3475: free(n->key.p);
3476: free(n->val.p);
1.7 schwarze 3477: nn = n->next;
3478: free(n);
3479: }
1.27 schwarze 3480: }
1.138 schwarze 3481:
3482: /* --- accessors and utility functions ------------------------------------ */
1.27 schwarze 3483:
3484: const struct tbl_span *
3485: roff_span(const struct roff *r)
3486: {
1.80 schwarze 3487:
1.149 schwarze 3488: return r->tbl ? tbl_span(r->tbl) : NULL;
1.32 schwarze 3489: }
3490:
3491: const struct eqn *
3492: roff_eqn(const struct roff *r)
3493: {
1.80 schwarze 3494:
1.149 schwarze 3495: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.42 schwarze 3496: }
3497:
3498: /*
3499: * Duplicate an input string, making the appropriate character
3500: * conversations (as stipulated by `tr') along the way.
3501: * Returns a heap-allocated string with all the replacements made.
3502: */
3503: char *
3504: roff_strdup(const struct roff *r, const char *p)
3505: {
3506: const struct roffkv *cp;
3507: char *res;
3508: const char *pp;
3509: size_t ssz, sz;
3510: enum mandoc_esc esc;
3511:
3512: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3513: return mandoc_strdup(p);
1.42 schwarze 3514: else if ('\0' == *p)
1.149 schwarze 3515: return mandoc_strdup("");
1.42 schwarze 3516:
3517: /*
3518: * Step through each character looking for term matches
3519: * (remember that a `tr' can be invoked with an escape, which is
3520: * a glyph but the escape is multi-character).
3521: * We only do this if the character hash has been initialised
3522: * and the string is >0 length.
3523: */
3524:
3525: res = NULL;
3526: ssz = 0;
3527:
3528: while ('\0' != *p) {
1.161 schwarze 3529: assert((unsigned int)*p < 128);
3530: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3531: sz = r->xtab[(int)*p].sz;
3532: res = mandoc_realloc(res, ssz + sz + 1);
3533: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3534: ssz += sz;
3535: p++;
3536: continue;
3537: } else if ('\\' != *p) {
3538: res = mandoc_realloc(res, ssz + 2);
3539: res[ssz++] = *p++;
3540: continue;
3541: }
3542:
3543: /* Search for term matches. */
3544: for (cp = r->xmbtab; cp; cp = cp->next)
3545: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3546: break;
3547:
3548: if (NULL != cp) {
3549: /*
3550: * A match has been found.
3551: * Append the match to the array and move
3552: * forward by its keysize.
3553: */
1.80 schwarze 3554: res = mandoc_realloc(res,
3555: ssz + cp->val.sz + 1);
1.42 schwarze 3556: memcpy(res + ssz, cp->val.p, cp->val.sz);
3557: ssz += cp->val.sz;
3558: p += (int)cp->key.sz;
3559: continue;
3560: }
3561:
3562: /*
3563: * Handle escapes carefully: we need to copy
3564: * over just the escape itself, or else we might
3565: * do replacements within the escape itself.
3566: * Make sure to pass along the bogus string.
3567: */
3568: pp = p++;
3569: esc = mandoc_escape(&p, NULL, NULL);
3570: if (ESCAPE_ERROR == esc) {
3571: sz = strlen(pp);
3572: res = mandoc_realloc(res, ssz + sz + 1);
3573: memcpy(res + ssz, pp, sz);
3574: break;
3575: }
1.80 schwarze 3576: /*
3577: * We bail out on bad escapes.
1.42 schwarze 3578: * No need to warn: we already did so when
3579: * roff_res() was called.
3580: */
3581: sz = (int)(p - pp);
3582: res = mandoc_realloc(res, ssz + sz + 1);
3583: memcpy(res + ssz, pp, sz);
3584: ssz += sz;
3585: }
3586:
3587: res[(int)ssz] = '\0';
1.149 schwarze 3588: return res;
1.99 schwarze 3589: }
3590:
3591: int
3592: roff_getformat(const struct roff *r)
3593: {
3594:
1.149 schwarze 3595: return r->format;
1.48 schwarze 3596: }
3597:
3598: /*
1.80 schwarze 3599: * Find out whether a line is a macro line or not.
1.48 schwarze 3600: * If it is, adjust the current position and return one; if it isn't,
3601: * return zero and don't change the current position.
3602: * If the control character has been set with `.cc', then let that grain
3603: * precedence.
3604: * This is slighly contrary to groff, where using the non-breaking
3605: * control character when `cc' has been invoked will cause the
3606: * non-breaking macro contents to be printed verbatim.
3607: */
3608: int
3609: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3610: {
3611: int pos;
3612:
3613: pos = *ppos;
3614:
1.175 schwarze 3615: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 3616: pos++;
1.175 schwarze 3617: else if (r->control != '\0')
1.149 schwarze 3618: return 0;
1.48 schwarze 3619: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3620: pos += 2;
3621: else if ('.' == cp[pos] || '\'' == cp[pos])
3622: pos++;
3623: else
1.149 schwarze 3624: return 0;
1.48 schwarze 3625:
3626: while (' ' == cp[pos] || '\t' == cp[pos])
3627: pos++;
3628:
3629: *ppos = pos;
1.149 schwarze 3630: return 1;
1.1 schwarze 3631: }
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