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