Annotation of src/usr.bin/mandoc/roff.c, Revision 1.198
1.198 ! schwarze 1: /* $OpenBSD: roff.c,v 1.197 2018/04/09 02:31:37 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.197 schwarze 4: * Copyright (c) 2010-2015, 2017, 2018 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:
1.187 schwarze 40: /* Types of definitions of macros and strings. */
41: #define ROFFDEF_USER (1 << 1) /* User-defined. */
42: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
43: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
44: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
45: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
46: ROFFDEF_REN | ROFFDEF_STD)
1.197 schwarze 47: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.187 schwarze 48:
1.138 schwarze 49: /* --- data types --------------------------------------------------------- */
50:
1.41 schwarze 51: /*
1.42 schwarze 52: * An incredibly-simple string buffer.
53: */
1.8 schwarze 54: struct roffstr {
1.42 schwarze 55: char *p; /* nil-terminated buffer */
56: size_t sz; /* saved strlen(p) */
57: };
58:
59: /*
60: * A key-value roffstr pair as part of a singly-linked list.
61: */
62: struct roffkv {
63: struct roffstr key;
64: struct roffstr val;
65: struct roffkv *next; /* next in list */
1.8 schwarze 66: };
67:
1.52 schwarze 68: /*
69: * A single number register as part of a singly-linked list.
70: */
71: struct roffreg {
72: struct roffstr key;
1.53 schwarze 73: int val;
1.52 schwarze 74: struct roffreg *next;
75: };
76:
1.167 schwarze 77: /*
78: * Association of request and macro names with token IDs.
79: */
80: struct roffreq {
81: enum roff_tok tok;
82: char name[];
83: };
84:
1.1 schwarze 85: struct roff {
1.35 schwarze 86: struct mparse *parse; /* parse point */
1.168 schwarze 87: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 88: struct roffnode *last; /* leaf of stack */
1.96 schwarze 89: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 90: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 91: struct roffreg *regtab; /* number registers */
1.42 schwarze 92: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 93: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 94: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
95: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 96: const char *current_string; /* value of last called user macro */
1.27 schwarze 97: struct tbl_node *first_tbl; /* first table parsed */
98: struct tbl_node *last_tbl; /* last table parsed */
99: struct tbl_node *tbl; /* current table being parsed */
1.191 schwarze 100: struct eqn_node *last_eqn; /* equation parser */
101: struct eqn_node *eqn; /* active equation parser */
1.102 schwarze 102: int eqn_inline; /* current equation is inline */
1.96 schwarze 103: int options; /* parse options */
104: int rstacksz; /* current size limit of rstack */
105: int rstackpos; /* position in rstack */
1.99 schwarze 106: int format; /* current file in mdoc or man format */
1.145 schwarze 107: int argc; /* number of args of the last macro */
1.96 schwarze 108: char control; /* control character */
1.175 schwarze 109: char escape; /* escape character */
1.1 schwarze 110: };
111:
112: struct roffnode {
1.166 schwarze 113: enum roff_tok tok; /* type of node */
1.1 schwarze 114: struct roffnode *parent; /* up one in stack */
115: int line; /* parse line */
116: int col; /* parse col */
1.16 schwarze 117: char *name; /* node name, e.g. macro name */
1.2 schwarze 118: char *end; /* end-rules: custom token */
119: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 120: int rule; /* current evaluation rule */
1.1 schwarze 121: };
122:
123: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 124: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 125: struct buf *buf, /* input buffer */ \
1.1 schwarze 126: int ln, /* parse line */ \
1.2 schwarze 127: int ppos, /* original pos in buffer */ \
128: int pos, /* current pos in buffer */ \
129: int *offs /* reset offset of buffer data */
1.1 schwarze 130:
131: typedef enum rofferr (*roffproc)(ROFF_ARGS);
132:
133: struct roffmac {
1.2 schwarze 134: roffproc proc; /* process new macro */
135: roffproc text; /* process as child text of macro */
136: roffproc sub; /* process as child of macro */
137: int flags;
138: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 139: };
140:
1.37 schwarze 141: struct predef {
142: const char *name; /* predefined input name */
143: const char *str; /* replacement symbol */
144: };
145:
146: #define PREDEF(__name, __str) \
147: { (__name), (__str) },
148:
1.138 schwarze 149: /* --- function prototypes ------------------------------------------------ */
150:
1.42 schwarze 151: static void roffnode_cleanscope(struct roff *);
152: static void roffnode_pop(struct roff *);
1.166 schwarze 153: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 154: const char *, int, int);
1.193 schwarze 155: static void roff_addtbl(struct roff_man *, struct tbl_node *);
1.183 schwarze 156: static enum rofferr roff_als(ROFF_ARGS);
1.2 schwarze 157: static enum rofferr roff_block(ROFF_ARGS);
158: static enum rofferr roff_block_text(ROFF_ARGS);
159: static enum rofferr roff_block_sub(ROFF_ARGS);
1.168 schwarze 160: static enum rofferr roff_br(ROFF_ARGS);
1.2 schwarze 161: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 162: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 163: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 164: static enum rofferr roff_cond(ROFF_ARGS);
165: static enum rofferr roff_cond_text(ROFF_ARGS);
166: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 167: static enum rofferr roff_ds(ROFF_ARGS);
1.175 schwarze 168: static enum rofferr roff_ec(ROFF_ARGS);
169: static enum rofferr roff_eo(ROFF_ARGS);
1.110 schwarze 170: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 171: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 172: static int roff_evalnum(struct roff *, int,
173: const char *, int *, int *, int);
174: static int roff_evalpar(struct roff *, int,
1.133 schwarze 175: const char *, int *, int *, int);
1.71 schwarze 176: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 177: static void roff_free1(struct roff *);
1.52 schwarze 178: static void roff_freereg(struct roffreg *);
1.42 schwarze 179: static void roff_freestr(struct roffkv *);
1.85 schwarze 180: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 181: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 182: static int roff_getop(const char *, int *, char *);
1.198 ! schwarze 183: static int roff_getregn(struct roff *, const char *, size_t);
1.145 schwarze 184: static int roff_getregro(const struct roff *,
185: const char *name);
1.197 schwarze 186: static const char *roff_getstrn(struct roff *,
1.187 schwarze 187: const char *, size_t, int *);
1.143 schwarze 188: static int roff_hasregn(const struct roff *,
189: const char *, size_t);
1.123 schwarze 190: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 191: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 192: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 193: static void roff_man_alloc1(struct roff_man *);
194: static void roff_man_free1(struct roff_man *);
1.172 schwarze 195: static enum rofferr roff_manyarg(ROFF_ARGS);
1.6 schwarze 196: static enum rofferr roff_nr(ROFF_ARGS);
1.169 schwarze 197: static enum rofferr roff_onearg(ROFF_ARGS);
1.166 schwarze 198: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 199: int, int);
1.177 schwarze 200: static enum rofferr roff_parsetext(struct roff *, struct buf *,
201: int, int *);
1.178 schwarze 202: static enum rofferr roff_renamed(ROFF_ARGS);
1.110 schwarze 203: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 204: static enum rofferr roff_rm(ROFF_ARGS);
1.178 schwarze 205: static enum rofferr roff_rn(ROFF_ARGS);
1.76 schwarze 206: static enum rofferr roff_rr(ROFF_ARGS);
1.198 ! schwarze 207: static void roff_setregn(struct roff *, const char *,
! 208: size_t, int, char);
1.8 schwarze 209: static void roff_setstr(struct roff *,
1.16 schwarze 210: const char *, const char *, int);
1.80 schwarze 211: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 212: size_t, const char *, size_t, int);
1.14 schwarze 213: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 214: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 215: static enum rofferr roff_Dd(ROFF_ARGS);
1.27 schwarze 216: static enum rofferr roff_TE(ROFF_ARGS);
217: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 218: static enum rofferr roff_EQ(ROFF_ARGS);
219: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 220: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 221: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 222: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 223:
1.138 schwarze 224: /* --- constant data ------------------------------------------------------ */
225:
1.133 schwarze 226: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
227: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
228:
1.166 schwarze 229: const char *__roff_name[MAN_MAX + 1] = {
1.177 schwarze 230: "br", "ce", "ft", "ll",
1.184 schwarze 231: "mc", "po", "rj", "sp",
232: "ta", "ti", NULL,
1.166 schwarze 233: "ab", "ad", "af", "aln",
234: "als", "am", "am1", "ami",
235: "ami1", "as", "as1", "asciify",
236: "backtrace", "bd", "bleedat", "blm",
237: "box", "boxa", "bp", "BP",
238: "break", "breakchar", "brnl", "brp",
1.177 schwarze 239: "brpnl", "c2", "cc",
1.166 schwarze 240: "cf", "cflags", "ch", "char",
241: "chop", "class", "close", "CL",
242: "color", "composite", "continue", "cp",
243: "cropat", "cs", "cu", "da",
244: "dch", "Dd", "de", "de1",
245: "defcolor", "dei", "dei1", "device",
246: "devicem", "di", "do", "ds",
247: "ds1", "dwh", "dt", "ec",
248: "ecr", "ecs", "el", "em",
249: "EN", "eo", "EP", "EQ",
250: "errprint", "ev", "evc", "ex",
251: "fallback", "fam", "fc", "fchar",
252: "fcolor", "fdeferlig", "feature", "fkern",
253: "fl", "flig", "fp", "fps",
254: "fschar", "fspacewidth", "fspecial", "ftr",
255: "fzoom", "gcolor", "hc", "hcode",
256: "hidechar", "hla", "hlm", "hpf",
257: "hpfa", "hpfcode", "hw", "hy",
258: "hylang", "hylen", "hym", "hypp",
259: "hys", "ie", "if", "ig",
260: "index", "it", "itc", "IX",
261: "kern", "kernafter", "kernbefore", "kernpair",
262: "lc", "lc_ctype", "lds", "length",
263: "letadj", "lf", "lg", "lhang",
264: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 265: "ls", "lsm", "lt",
1.166 schwarze 266: "mediasize", "minss", "mk", "mso",
267: "na", "ne", "nh", "nhychar",
268: "nm", "nn", "nop", "nr",
269: "nrf", "nroff", "ns", "nx",
270: "open", "opena", "os", "output",
271: "padj", "papersize", "pc", "pev",
272: "pi", "PI", "pl", "pm",
1.184 schwarze 273: "pn", "pnr", "ps",
1.166 schwarze 274: "psbb", "pshape", "pso", "ptr",
275: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 276: "return", "rfschar", "rhang",
1.166 schwarze 277: "rm", "rn", "rnn", "rr",
278: "rs", "rt", "schar", "sentchar",
279: "shc", "shift", "sizes", "so",
280: "spacewidth", "special", "spreadwarn", "ss",
281: "sty", "substring", "sv", "sy",
1.172 schwarze 282: "T&", "tc", "TE",
1.173 schwarze 283: "TH", "tkf", "tl",
1.166 schwarze 284: "tm", "tm1", "tmc", "tr",
285: "track", "transchar", "trf", "trimat",
286: "trin", "trnt", "troff", "TS",
287: "uf", "ul", "unformat", "unwatch",
288: "unwatchn", "vpt", "vs", "warn",
289: "warnscale", "watch", "watchlength", "watchn",
290: "wh", "while", "write", "writec",
291: "writem", "xflag", ".", NULL,
1.178 schwarze 292: NULL, "text",
1.166 schwarze 293: "Dd", "Dt", "Os", "Sh",
294: "Ss", "Pp", "D1", "Dl",
295: "Bd", "Ed", "Bl", "El",
296: "It", "Ad", "An", "Ap",
297: "Ar", "Cd", "Cm", "Dv",
298: "Er", "Ev", "Ex", "Fa",
299: "Fd", "Fl", "Fn", "Ft",
300: "Ic", "In", "Li", "Nd",
301: "Nm", "Op", "Ot", "Pa",
302: "Rv", "St", "Va", "Vt",
303: "Xr", "%A", "%B", "%D",
304: "%I", "%J", "%N", "%O",
305: "%P", "%R", "%T", "%V",
306: "Ac", "Ao", "Aq", "At",
307: "Bc", "Bf", "Bo", "Bq",
308: "Bsx", "Bx", "Db", "Dc",
309: "Do", "Dq", "Ec", "Ef",
310: "Em", "Eo", "Fx", "Ms",
311: "No", "Ns", "Nx", "Ox",
312: "Pc", "Pf", "Po", "Pq",
313: "Qc", "Ql", "Qo", "Qq",
314: "Re", "Rs", "Sc", "So",
315: "Sq", "Sm", "Sx", "Sy",
316: "Tn", "Ux", "Xc", "Xo",
317: "Fo", "Fc", "Oo", "Oc",
318: "Bk", "Ek", "Bt", "Hf",
319: "Fr", "Ud", "Lb", "Lp",
320: "Lk", "Mt", "Brq", "Bro",
321: "Brc", "%C", "Es", "En",
1.171 schwarze 322: "Dx", "%Q", "%U", "Ta",
323: NULL,
1.166 schwarze 324: "TH", "SH", "SS", "TP",
325: "LP", "PP", "P", "IP",
326: "HP", "SM", "SB", "BI",
327: "IB", "BR", "RB", "R",
328: "B", "I", "IR", "RI",
1.171 schwarze 329: "nf", "fi",
1.166 schwarze 330: "RE", "RS", "DT", "UC",
1.169 schwarze 331: "PD", "AT", "in",
1.166 schwarze 332: "OP", "EX", "EE", "UR",
1.189 bentley 333: "UE", "MT", "ME", NULL
1.166 schwarze 334: };
335: const char *const *roff_name = __roff_name;
336:
337: static struct roffmac roffs[TOKEN_NONE] = {
1.168 schwarze 338: { roff_br, NULL, NULL, 0 }, /* br */
1.177 schwarze 339: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.169 schwarze 340: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 341: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 342: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.184 schwarze 343: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 344: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 345: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 346: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 347: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 348: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 349: { roff_unsupp, NULL, NULL, 0 }, /* ab */
350: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
351: { roff_line_ignore, NULL, NULL, 0 }, /* af */
352: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 353: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 354: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
355: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
356: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
357: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
358: { roff_ds, NULL, NULL, 0 }, /* as */
359: { roff_ds, NULL, NULL, 0 }, /* as1 */
360: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
361: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
362: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
363: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
364: { roff_unsupp, NULL, NULL, 0 }, /* blm */
365: { roff_unsupp, NULL, NULL, 0 }, /* box */
366: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
367: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
368: { roff_unsupp, NULL, NULL, 0 }, /* BP */
369: { roff_unsupp, NULL, NULL, 0 }, /* break */
370: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
371: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 schwarze 372: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 373: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
374: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
375: { roff_cc, NULL, NULL, 0 }, /* cc */
376: { roff_insec, NULL, NULL, 0 }, /* cf */
377: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
378: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
379: { roff_unsupp, NULL, NULL, 0 }, /* char */
380: { roff_unsupp, NULL, NULL, 0 }, /* chop */
381: { roff_line_ignore, NULL, NULL, 0 }, /* class */
382: { roff_insec, NULL, NULL, 0 }, /* close */
383: { roff_unsupp, NULL, NULL, 0 }, /* CL */
384: { roff_line_ignore, NULL, NULL, 0 }, /* color */
385: { roff_unsupp, NULL, NULL, 0 }, /* composite */
386: { roff_unsupp, NULL, NULL, 0 }, /* continue */
387: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
388: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
389: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
390: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
391: { roff_unsupp, NULL, NULL, 0 }, /* da */
392: { roff_unsupp, NULL, NULL, 0 }, /* dch */
393: { roff_Dd, NULL, NULL, 0 }, /* Dd */
394: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
395: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
396: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
397: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
398: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
399: { roff_unsupp, NULL, NULL, 0 }, /* device */
400: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
401: { roff_unsupp, NULL, NULL, 0 }, /* di */
402: { roff_unsupp, NULL, NULL, 0 }, /* do */
403: { roff_ds, NULL, NULL, 0 }, /* ds */
404: { roff_ds, NULL, NULL, 0 }, /* ds1 */
405: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
406: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 407: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 408: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
409: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
410: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
411: { roff_unsupp, NULL, NULL, 0 }, /* em */
412: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 413: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 414: { roff_unsupp, NULL, NULL, 0 }, /* EP */
415: { roff_EQ, NULL, NULL, 0 }, /* EQ */
416: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
417: { roff_unsupp, NULL, NULL, 0 }, /* ev */
418: { roff_unsupp, NULL, NULL, 0 }, /* evc */
419: { roff_unsupp, NULL, NULL, 0 }, /* ex */
420: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
421: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
422: { roff_unsupp, NULL, NULL, 0 }, /* fc */
423: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
424: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
425: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
426: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
427: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
428: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
429: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
430: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
431: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
432: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
433: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
434: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
435: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
436: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
437: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
438: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
439: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
440: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
441: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
442: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
443: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
444: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
445: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
446: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
447: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
448: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
449: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
450: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
451: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
452: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
453: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
454: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
455: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
456: { roff_unsupp, NULL, NULL, 0 }, /* index */
457: { roff_it, NULL, NULL, 0 }, /* it */
458: { roff_unsupp, NULL, NULL, 0 }, /* itc */
459: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
460: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
461: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
462: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
463: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
464: { roff_unsupp, NULL, NULL, 0 }, /* lc */
465: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
466: { roff_unsupp, NULL, NULL, 0 }, /* lds */
467: { roff_unsupp, NULL, NULL, 0 }, /* length */
468: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
469: { roff_insec, NULL, NULL, 0 }, /* lf */
470: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
471: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
472: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
473: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
474: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
475: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
476: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
477: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
478: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
479: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
480: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
481: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
482: { roff_insec, NULL, NULL, 0 }, /* mso */
483: { roff_line_ignore, NULL, NULL, 0 }, /* na */
484: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
485: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
486: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
487: { roff_unsupp, NULL, NULL, 0 }, /* nm */
488: { roff_unsupp, NULL, NULL, 0 }, /* nn */
489: { roff_unsupp, NULL, NULL, 0 }, /* nop */
490: { roff_nr, NULL, NULL, 0 }, /* nr */
491: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
492: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
493: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
494: { roff_insec, NULL, NULL, 0 }, /* nx */
495: { roff_insec, NULL, NULL, 0 }, /* open */
496: { roff_insec, NULL, NULL, 0 }, /* opena */
497: { roff_line_ignore, NULL, NULL, 0 }, /* os */
498: { roff_unsupp, NULL, NULL, 0 }, /* output */
499: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
500: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
501: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
502: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
503: { roff_insec, NULL, NULL, 0 }, /* pi */
504: { roff_unsupp, NULL, NULL, 0 }, /* PI */
505: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
506: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
507: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
508: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
509: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
510: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
511: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
512: { roff_insec, NULL, NULL, 0 }, /* pso */
513: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
514: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
515: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
516: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
517: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
518: { roff_unsupp, NULL, NULL, 0 }, /* return */
519: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
520: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
521: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 522: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 523: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
524: { roff_rr, NULL, NULL, 0 }, /* rr */
525: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
526: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
527: { roff_unsupp, NULL, NULL, 0 }, /* schar */
528: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
529: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
530: { roff_unsupp, NULL, NULL, 0 }, /* shift */
531: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
532: { roff_so, NULL, NULL, 0 }, /* so */
533: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
534: { roff_line_ignore, NULL, NULL, 0 }, /* special */
535: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
536: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
537: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
538: { roff_unsupp, NULL, NULL, 0 }, /* substring */
539: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
540: { roff_insec, NULL, NULL, 0 }, /* sy */
541: { roff_T_, NULL, NULL, 0 }, /* T& */
542: { roff_unsupp, NULL, NULL, 0 }, /* tc */
543: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 544: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 545: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
546: { roff_unsupp, NULL, NULL, 0 }, /* tl */
547: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
548: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
549: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
550: { roff_tr, NULL, NULL, 0 }, /* tr */
551: { roff_line_ignore, NULL, NULL, 0 }, /* track */
552: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
553: { roff_insec, NULL, NULL, 0 }, /* trf */
554: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
555: { roff_unsupp, NULL, NULL, 0 }, /* trin */
556: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
557: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
558: { roff_TS, NULL, NULL, 0 }, /* TS */
559: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
560: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
561: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
562: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
563: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
564: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
565: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
566: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
567: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
568: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
569: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
570: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
571: { roff_unsupp, NULL, NULL, 0 }, /* wh */
572: { roff_unsupp, NULL, NULL, 0 }, /* while */
573: { roff_insec, NULL, NULL, 0 }, /* write */
574: { roff_insec, NULL, NULL, 0 }, /* writec */
575: { roff_insec, NULL, NULL, 0 }, /* writem */
576: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
577: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 578: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 579: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 580: };
581:
1.37 schwarze 582: /* Array of injected predefined strings. */
583: #define PREDEFS_MAX 38
584: static const struct predef predefs[PREDEFS_MAX] = {
585: #include "predefs.in"
586: };
587:
1.177 schwarze 588: static int roffce_lines; /* number of input lines to center */
589: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 590: static int roffit_lines; /* number of lines to delay */
591: static char *roffit_macro; /* nil-terminated macro line */
592:
1.80 schwarze 593:
1.138 schwarze 594: /* --- request table ------------------------------------------------------ */
595:
1.167 schwarze 596: struct ohash *
597: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 598: {
1.167 schwarze 599: struct ohash *htab;
600: struct roffreq *req;
601: enum roff_tok tok;
602: size_t sz;
603: unsigned int slot;
1.3 schwarze 604:
1.167 schwarze 605: htab = mandoc_malloc(sizeof(*htab));
606: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 607:
1.167 schwarze 608: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 609: if (roff_name[tok] == NULL)
610: continue;
1.167 schwarze 611: sz = strlen(roff_name[tok]);
612: req = mandoc_malloc(sizeof(*req) + sz + 1);
613: req->tok = tok;
614: memcpy(req->name, roff_name[tok], sz + 1);
615: slot = ohash_qlookup(htab, req->name);
616: ohash_insert(htab, slot, req);
1.3 schwarze 617: }
1.167 schwarze 618: return htab;
1.3 schwarze 619: }
620:
1.167 schwarze 621: void
622: roffhash_free(struct ohash *htab)
1.1 schwarze 623: {
1.167 schwarze 624: struct roffreq *req;
625: unsigned int slot;
1.1 schwarze 626:
1.167 schwarze 627: if (htab == NULL)
628: return;
629: for (req = ohash_first(htab, &slot); req != NULL;
630: req = ohash_next(htab, &slot))
631: free(req);
632: ohash_delete(htab);
633: free(htab);
634: }
635:
636: enum roff_tok
637: roffhash_find(struct ohash *htab, const char *name, size_t sz)
638: {
639: struct roffreq *req;
640: const char *end;
641:
642: if (sz) {
643: end = name + sz;
644: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
645: } else
646: req = ohash_find(htab, ohash_qlookup(htab, name));
647: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 648: }
649:
1.138 schwarze 650: /* --- stack of request blocks -------------------------------------------- */
651:
1.1 schwarze 652: /*
653: * Pop the current node off of the stack of roff instructions currently
654: * pending.
655: */
656: static void
657: roffnode_pop(struct roff *r)
658: {
659: struct roffnode *p;
660:
1.2 schwarze 661: assert(r->last);
1.80 schwarze 662: p = r->last;
1.2 schwarze 663:
664: r->last = r->last->parent;
1.16 schwarze 665: free(p->name);
666: free(p->end);
1.1 schwarze 667: free(p);
668: }
669:
670: /*
671: * Push a roff node onto the instruction stack. This must later be
672: * removed with roffnode_pop().
673: */
1.11 schwarze 674: static void
1.166 schwarze 675: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 676: int line, int col)
1.1 schwarze 677: {
678: struct roffnode *p;
679:
1.11 schwarze 680: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 681: p->tok = tok;
1.16 schwarze 682: if (name)
683: p->name = mandoc_strdup(name);
1.1 schwarze 684: p->parent = r->last;
685: p->line = line;
686: p->col = col;
1.71 schwarze 687: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 688:
689: r->last = p;
690: }
691:
1.138 schwarze 692: /* --- roff parser state data management ---------------------------------- */
693:
1.1 schwarze 694: static void
695: roff_free1(struct roff *r)
696: {
1.49 schwarze 697: struct tbl_node *tbl;
1.42 schwarze 698: int i;
1.27 schwarze 699:
1.49 schwarze 700: while (NULL != (tbl = r->first_tbl)) {
701: r->first_tbl = tbl->next;
702: tbl_free(tbl);
1.27 schwarze 703: }
704: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 705:
1.191 schwarze 706: if (r->last_eqn != NULL)
707: eqn_free(r->last_eqn);
708: r->last_eqn = r->eqn = NULL;
1.32 schwarze 709:
1.1 schwarze 710: while (r->last)
711: roffnode_pop(r);
1.27 schwarze 712:
1.96 schwarze 713: free (r->rstack);
714: r->rstack = NULL;
715: r->rstacksz = 0;
716: r->rstackpos = -1;
717:
718: roff_freereg(r->regtab);
719: r->regtab = NULL;
720:
1.42 schwarze 721: roff_freestr(r->strtab);
1.178 schwarze 722: roff_freestr(r->rentab);
1.42 schwarze 723: roff_freestr(r->xmbtab);
1.178 schwarze 724: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 725:
726: if (r->xtab)
727: for (i = 0; i < 128; i++)
728: free(r->xtab[i].p);
729: free(r->xtab);
730: r->xtab = NULL;
1.1 schwarze 731: }
732:
733: void
734: roff_reset(struct roff *r)
735: {
736: roff_free1(r);
1.99 schwarze 737: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 738: r->control = '\0';
739: r->escape = '\\';
1.179 schwarze 740: roffce_lines = 0;
741: roffce_node = NULL;
742: roffit_lines = 0;
743: roffit_macro = NULL;
1.1 schwarze 744: }
745:
746: void
747: roff_free(struct roff *r)
748: {
749: roff_free1(r);
1.167 schwarze 750: roffhash_free(r->reqtab);
1.1 schwarze 751: free(r);
752: }
753:
754: struct roff *
1.151 schwarze 755: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 756: {
757: struct roff *r;
758:
1.11 schwarze 759: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 760: r->parse = parse;
1.167 schwarze 761: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.72 schwarze 762: r->options = options;
1.99 schwarze 763: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 764: r->rstackpos = -1;
1.175 schwarze 765: r->escape = '\\';
1.149 schwarze 766: return r;
1.137 schwarze 767: }
768:
1.138 schwarze 769: /* --- syntax tree state data management ---------------------------------- */
770:
1.137 schwarze 771: static void
772: roff_man_free1(struct roff_man *man)
773: {
774:
1.138 schwarze 775: if (man->first != NULL)
776: roff_node_delete(man, man->first);
1.137 schwarze 777: free(man->meta.msec);
778: free(man->meta.vol);
779: free(man->meta.os);
780: free(man->meta.arch);
781: free(man->meta.title);
782: free(man->meta.name);
783: free(man->meta.date);
784: }
785:
786: static void
787: roff_man_alloc1(struct roff_man *man)
788: {
789:
790: memset(&man->meta, 0, sizeof(man->meta));
791: man->first = mandoc_calloc(1, sizeof(*man->first));
792: man->first->type = ROFFT_ROOT;
793: man->last = man->first;
794: man->last_es = NULL;
795: man->flags = 0;
796: man->macroset = MACROSET_NONE;
797: man->lastsec = man->lastnamed = SEC_NONE;
798: man->next = ROFF_NEXT_CHILD;
799: }
800:
801: void
802: roff_man_reset(struct roff_man *man)
803: {
804:
805: roff_man_free1(man);
806: roff_man_alloc1(man);
807: }
808:
809: void
810: roff_man_free(struct roff_man *man)
811: {
812:
813: roff_man_free1(man);
814: free(man);
815: }
816:
817: struct roff_man *
818: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.188 schwarze 819: const char *os_s, int quick)
1.137 schwarze 820: {
821: struct roff_man *man;
822:
823: man = mandoc_calloc(1, sizeof(*man));
824: man->parse = parse;
825: man->roff = roff;
1.188 schwarze 826: man->os_s = os_s;
1.137 schwarze 827: man->quick = quick;
828: roff_man_alloc1(man);
1.168 schwarze 829: roff->man = man;
1.149 schwarze 830: return man;
1.1 schwarze 831: }
832:
1.138 schwarze 833: /* --- syntax tree handling ----------------------------------------------- */
834:
835: struct roff_node *
836: roff_node_alloc(struct roff_man *man, int line, int pos,
837: enum roff_type type, int tok)
838: {
839: struct roff_node *n;
840:
841: n = mandoc_calloc(1, sizeof(*n));
842: n->line = line;
843: n->pos = pos;
844: n->tok = tok;
845: n->type = type;
846: n->sec = man->lastsec;
847:
848: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 849: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 850: else
1.157 schwarze 851: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 852: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 853: n->flags |= NODE_LINE;
1.138 schwarze 854: man->flags &= ~MDOC_NEWLINE;
855:
1.149 schwarze 856: return n;
1.138 schwarze 857: }
858:
859: void
860: roff_node_append(struct roff_man *man, struct roff_node *n)
861: {
862:
863: switch (man->next) {
864: case ROFF_NEXT_SIBLING:
1.153 schwarze 865: if (man->last->next != NULL) {
866: n->next = man->last->next;
867: man->last->next->prev = n;
868: } else
869: man->last->parent->last = n;
1.138 schwarze 870: man->last->next = n;
871: n->prev = man->last;
872: n->parent = man->last->parent;
873: break;
874: case ROFF_NEXT_CHILD:
1.159 schwarze 875: if (man->last->child != NULL) {
876: n->next = man->last->child;
877: man->last->child->prev = n;
878: } else
879: man->last->last = n;
1.138 schwarze 880: man->last->child = n;
881: n->parent = man->last;
882: break;
883: default:
884: abort();
885: }
1.154 schwarze 886: man->last = n;
1.138 schwarze 887:
888: switch (n->type) {
889: case ROFFT_HEAD:
890: n->parent->head = n;
891: break;
892: case ROFFT_BODY:
1.154 schwarze 893: if (n->end != ENDBODY_NOT)
894: return;
1.138 schwarze 895: n->parent->body = n;
896: break;
897: case ROFFT_TAIL:
898: n->parent->tail = n;
899: break;
900: default:
1.154 schwarze 901: return;
1.138 schwarze 902: }
1.154 schwarze 903:
904: /*
905: * Copy over the normalised-data pointer of our parent. Not
906: * everybody has one, but copying a null pointer is fine.
907: */
908:
909: n->norm = n->parent->norm;
910: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 911: }
912:
1.139 schwarze 913: void
914: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
915: {
916: struct roff_node *n;
917:
918: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
919: n->string = roff_strdup(man->roff, word);
920: roff_node_append(man, n);
1.158 schwarze 921: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 922: man->next = ROFF_NEXT_SIBLING;
923: }
924:
925: void
926: roff_word_append(struct roff_man *man, const char *word)
927: {
928: struct roff_node *n;
929: char *addstr, *newstr;
930:
931: n = man->last;
932: addstr = roff_strdup(man->roff, word);
933: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
934: free(addstr);
935: free(n->string);
936: n->string = newstr;
937: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 938: }
939:
940: void
941: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
942: {
943: struct roff_node *n;
944:
945: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
946: roff_node_append(man, n);
947: man->next = ROFF_NEXT_CHILD;
948: }
949:
950: struct roff_node *
951: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
952: {
953: struct roff_node *n;
954:
955: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
956: roff_node_append(man, n);
957: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 958: return n;
1.139 schwarze 959: }
960:
1.138 schwarze 961: struct roff_node *
962: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
963: {
964: struct roff_node *n;
965:
966: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
967: roff_node_append(man, n);
968: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 969: return n;
1.138 schwarze 970: }
971:
972: struct roff_node *
973: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
974: {
975: struct roff_node *n;
976:
977: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
978: roff_node_append(man, n);
979: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 980: return n;
1.139 schwarze 981: }
982:
1.193 schwarze 983: static void
984: roff_addtbl(struct roff_man *man, struct tbl_node *tbl)
1.139 schwarze 985: {
986: struct roff_node *n;
1.193 schwarze 987: const struct tbl_span *span;
1.139 schwarze 988:
989: if (man->macroset == MACROSET_MAN)
1.174 schwarze 990: man_breakscope(man, ROFF_TS);
1.193 schwarze 991: while ((span = tbl_span(tbl)) != NULL) {
992: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
993: n->span = span;
994: roff_node_append(man, n);
995: n->flags |= NODE_VALID | NODE_ENDED;
996: man->next = ROFF_NEXT_SIBLING;
997: }
1.138 schwarze 998: }
999:
1000: void
1001: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1002: {
1003:
1004: /* Adjust siblings. */
1005:
1006: if (n->prev)
1007: n->prev->next = n->next;
1008: if (n->next)
1009: n->next->prev = n->prev;
1010:
1011: /* Adjust parent. */
1012:
1013: if (n->parent != NULL) {
1014: if (n->parent->child == n)
1015: n->parent->child = n->next;
1016: if (n->parent->last == n)
1017: n->parent->last = n->prev;
1018: }
1019:
1020: /* Adjust parse point. */
1021:
1022: if (man == NULL)
1023: return;
1024: if (man->last == n) {
1025: if (n->prev == NULL) {
1026: man->last = n->parent;
1027: man->next = ROFF_NEXT_CHILD;
1028: } else {
1029: man->last = n->prev;
1030: man->next = ROFF_NEXT_SIBLING;
1031: }
1032: }
1033: if (man->first == n)
1034: man->first = NULL;
1035: }
1036:
1037: void
1038: roff_node_free(struct roff_node *n)
1039: {
1040:
1041: if (n->args != NULL)
1042: mdoc_argv_free(n->args);
1043: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1044: free(n->norm);
1.191 schwarze 1045: if (n->eqn != NULL)
1046: eqn_box_free(n->eqn);
1.138 schwarze 1047: free(n->string);
1048: free(n);
1049: }
1050:
1051: void
1052: roff_node_delete(struct roff_man *man, struct roff_node *n)
1053: {
1054:
1055: while (n->child != NULL)
1056: roff_node_delete(man, n->child);
1057: roff_node_unlink(man, n);
1058: roff_node_free(n);
1.141 schwarze 1059: }
1060:
1061: void
1062: deroff(char **dest, const struct roff_node *n)
1063: {
1064: char *cp;
1065: size_t sz;
1066:
1067: if (n->type != ROFFT_TEXT) {
1068: for (n = n->child; n != NULL; n = n->next)
1069: deroff(dest, n);
1070: return;
1071: }
1072:
1.160 schwarze 1073: /* Skip leading whitespace. */
1.141 schwarze 1074:
1.160 schwarze 1075: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1076: if (cp[0] == '\\' && cp[1] != '\0' &&
1077: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1078: cp++;
1.160 schwarze 1079: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1080: break;
1081: }
1082:
1.161 schwarze 1083: /* Skip trailing backslash. */
1084:
1085: sz = strlen(cp);
1.162 schwarze 1086: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1087: sz--;
1088:
1.141 schwarze 1089: /* Skip trailing whitespace. */
1090:
1.161 schwarze 1091: for (; sz; sz--)
1.141 schwarze 1092: if ( ! isspace((unsigned char)cp[sz-1]))
1093: break;
1094:
1095: /* Skip empty strings. */
1096:
1097: if (sz == 0)
1098: return;
1099:
1100: if (*dest == NULL) {
1101: *dest = mandoc_strndup(cp, sz);
1102: return;
1103: }
1104:
1105: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1106: free(*dest);
1107: *dest = cp;
1.138 schwarze 1108: }
1109:
1110: /* --- main functions of the roff parser ---------------------------------- */
1111:
1.8 schwarze 1112: /*
1.79 schwarze 1113: * In the current line, expand escape sequences that tend to get
1114: * used in numerical expressions and conditional requests.
1115: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1116: */
1.45 schwarze 1117: static enum rofferr
1.110 schwarze 1118: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1119: {
1.81 schwarze 1120: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1121: const char *start; /* start of the string to process */
1.82 schwarze 1122: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1123: const char *stnam; /* start of the name, after "[(*" */
1124: const char *cp; /* end of the name, e.g. before ']' */
1125: const char *res; /* the string to be substituted */
1.110 schwarze 1126: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1127: size_t maxl; /* expected length of the escape name */
1128: size_t naml; /* actual length of the escape name */
1.109 schwarze 1129: enum mandoc_esc esc; /* type of the escape sequence */
1130: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1131: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1132: int npos; /* position in numeric expression */
1.91 schwarze 1133: int arg_complete; /* argument not interrupted by eol */
1.175 schwarze 1134: int done; /* no more input available */
1.187 schwarze 1135: int deftype; /* type of definition to paste */
1.195 schwarze 1136: int rcsid; /* kind of RCS id seen */
1.79 schwarze 1137: char term; /* character terminating the escape */
1.8 schwarze 1138:
1.175 schwarze 1139: /* Search forward for comments. */
1140:
1141: done = 0;
1142: start = buf->buf + pos;
1143: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1144: if (stesc[0] != r->escape || stesc[1] == '\0')
1145: continue;
1146: stesc++;
1147: if (*stesc != '"' && *stesc != '#')
1148: continue;
1.185 schwarze 1149:
1150: /* Comment found, look for RCS id. */
1151:
1.195 schwarze 1152: rcsid = 0;
1.185 schwarze 1153: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.195 schwarze 1154: rcsid = 1 << MANDOC_OS_OPENBSD;
1.185 schwarze 1155: cp += 8;
1156: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.195 schwarze 1157: rcsid = 1 << MANDOC_OS_NETBSD;
1.185 schwarze 1158: cp += 7;
1159: }
1160: if (cp != NULL &&
1161: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1162: strchr(cp, '$') != NULL) {
1.195 schwarze 1163: if (r->man->meta.rcsids & rcsid)
1.186 schwarze 1164: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1165: ln, stesc + 1 - buf->buf, stesc + 1);
1.195 schwarze 1166: r->man->meta.rcsids |= rcsid;
1.186 schwarze 1167: }
1.185 schwarze 1168:
1169: /* Handle trailing whitespace. */
1170:
1.175 schwarze 1171: cp = strchr(stesc--, '\0') - 1;
1172: if (*cp == '\n') {
1173: done = 1;
1174: cp--;
1175: }
1176: if (*cp == ' ' || *cp == '\t')
1177: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1178: ln, cp - buf->buf, NULL);
1179: while (stesc > start && stesc[-1] == ' ')
1180: stesc--;
1181: *stesc = '\0';
1182: break;
1183: }
1184: if (stesc == start)
1185: return ROFF_CONT;
1186: stesc--;
1187:
1188: /* Notice the end of the input. */
1189:
1190: if (*stesc == '\n') {
1191: *stesc-- = '\0';
1192: done = 1;
1193: }
1194:
1.43 schwarze 1195: expand_count = 0;
1.175 schwarze 1196: while (stesc >= start) {
1.43 schwarze 1197:
1.78 schwarze 1198: /* Search backwards for the next backslash. */
1199:
1.175 schwarze 1200: if (*stesc != r->escape) {
1201: if (*stesc == '\\') {
1202: *stesc = '\0';
1203: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1204: buf->buf, stesc + 1) + 1;
1205: start = nbuf + pos;
1206: stesc = nbuf + (stesc - buf->buf);
1207: free(buf->buf);
1208: buf->buf = nbuf;
1209: }
1210: stesc--;
1.78 schwarze 1211: continue;
1.175 schwarze 1212: }
1.78 schwarze 1213:
1214: /* If it is escaped, skip it. */
1215:
1216: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1217: if (*cp != r->escape)
1.78 schwarze 1218: break;
1219:
1.110 schwarze 1220: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1221: while (stesc > cp)
1222: *stesc-- = '\\';
1.78 schwarze 1223: continue;
1.175 schwarze 1224: } else if (stesc[1] != '\0') {
1225: *stesc = '\\';
1226: } else {
1227: *stesc-- = '\0';
1228: if (done)
1229: continue;
1230: else
1231: return ROFF_APPEND;
1.78 schwarze 1232: }
1.23 schwarze 1233:
1.79 schwarze 1234: /* Decide whether to expand or to check only. */
1.23 schwarze 1235:
1.79 schwarze 1236: term = '\0';
1.78 schwarze 1237: cp = stesc + 1;
1.53 schwarze 1238: switch (*cp) {
1.80 schwarze 1239: case '*':
1.53 schwarze 1240: res = NULL;
1241: break;
1.80 schwarze 1242: case 'B':
1243: case 'w':
1.79 schwarze 1244: term = cp[1];
1245: /* FALLTHROUGH */
1.80 schwarze 1246: case 'n':
1.53 schwarze 1247: res = ubuf;
1248: break;
1249: default:
1.109 schwarze 1250: esc = mandoc_escape(&cp, &stnam, &inaml);
1251: if (esc == ESCAPE_ERROR ||
1252: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1253: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1254: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1255: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1256: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1257: stesc--;
1.78 schwarze 1258: continue;
1.42 schwarze 1259: }
1260:
1.78 schwarze 1261: if (EXPAND_LIMIT < ++expand_count) {
1262: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1263: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1264: return ROFF_IGN;
1.78 schwarze 1265: }
1.23 schwarze 1266:
1267: /*
1268: * The third character decides the length
1.53 schwarze 1269: * of the name of the string or register.
1.23 schwarze 1270: * Save a pointer to the name.
1271: */
1272:
1.110 schwarze 1273: if (term == '\0') {
1.79 schwarze 1274: switch (*++cp) {
1.80 schwarze 1275: case '\0':
1.79 schwarze 1276: maxl = 0;
1277: break;
1.80 schwarze 1278: case '(':
1.79 schwarze 1279: cp++;
1280: maxl = 2;
1281: break;
1.80 schwarze 1282: case '[':
1.79 schwarze 1283: cp++;
1284: term = ']';
1285: maxl = 0;
1286: break;
1287: default:
1288: maxl = 1;
1289: break;
1290: }
1291: } else {
1292: cp += 2;
1.8 schwarze 1293: maxl = 0;
1294: }
1.23 schwarze 1295: stnam = cp;
1.8 schwarze 1296:
1.23 schwarze 1297: /* Advance to the end of the name. */
1.8 schwarze 1298:
1.125 schwarze 1299: naml = 0;
1.91 schwarze 1300: arg_complete = 1;
1.125 schwarze 1301: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1302: if (*cp == '\0') {
1.92 schwarze 1303: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1304: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1305: arg_complete = 0;
1.79 schwarze 1306: break;
1.42 schwarze 1307: }
1.110 schwarze 1308: if (maxl == 0 && *cp == term) {
1.79 schwarze 1309: cp++;
1.125 schwarze 1310: break;
1311: }
1312: if (*cp++ != '\\' || stesc[1] != 'w') {
1313: naml++;
1314: continue;
1315: }
1316: switch (mandoc_escape(&cp, NULL, NULL)) {
1317: case ESCAPE_SPECIAL:
1318: case ESCAPE_UNICODE:
1319: case ESCAPE_NUMBERED:
1320: case ESCAPE_OVERSTRIKE:
1321: naml++;
1322: break;
1323: default:
1.8 schwarze 1324: break;
1.79 schwarze 1325: }
1.8 schwarze 1326: }
1327:
1.23 schwarze 1328: /*
1329: * Retrieve the replacement string; if it is
1330: * undefined, resume searching for escapes.
1331: */
1332:
1.79 schwarze 1333: switch (stesc[1]) {
1.80 schwarze 1334: case '*':
1.187 schwarze 1335: if (arg_complete) {
1336: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1337: res = roff_getstrn(r, stnam, naml, &deftype);
1338: }
1.79 schwarze 1339: break;
1.80 schwarze 1340: case 'B':
1.79 schwarze 1341: npos = 0;
1.91 schwarze 1342: ubuf[0] = arg_complete &&
1.133 schwarze 1343: roff_evalnum(r, ln, stnam, &npos,
1344: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1345: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1346: ubuf[1] = '\0';
1347: break;
1.80 schwarze 1348: case 'n':
1.91 schwarze 1349: if (arg_complete)
1350: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1351: roff_getregn(r, stnam, naml));
1352: else
1353: ubuf[0] = '\0';
1.79 schwarze 1354: break;
1.80 schwarze 1355: case 'w':
1.91 schwarze 1356: /* use even incomplete args */
1.81 schwarze 1357: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1358: 24 * (int)naml);
1359: break;
1360: }
1.8 schwarze 1361:
1.110 schwarze 1362: if (res == NULL) {
1.92 schwarze 1363: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1364: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1365: "%.*s", (int)naml, stnam);
1.37 schwarze 1366: res = "";
1.118 schwarze 1367: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1368: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1369: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1370: return ROFF_IGN;
1.8 schwarze 1371: }
1372:
1.23 schwarze 1373: /* Replace the escape sequence by the string. */
1374:
1.82 schwarze 1375: *stesc = '\0';
1.110 schwarze 1376: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1377: buf->buf, res, cp) + 1;
1.8 schwarze 1378:
1.78 schwarze 1379: /* Prepare for the next replacement. */
1.8 schwarze 1380:
1.78 schwarze 1381: start = nbuf + pos;
1.110 schwarze 1382: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1383: free(buf->buf);
1384: buf->buf = nbuf;
1.42 schwarze 1385: }
1.149 schwarze 1386: return ROFF_CONT;
1.42 schwarze 1387: }
1388:
1389: /*
1.147 schwarze 1390: * Process text streams.
1.42 schwarze 1391: */
1392: static enum rofferr
1.177 schwarze 1393: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1394: {
1395: size_t sz;
1396: const char *start;
1.51 schwarze 1397: char *p;
1398: int isz;
1.42 schwarze 1399: enum mandoc_esc esc;
1400:
1.147 schwarze 1401: /* Spring the input line trap. */
1402:
1403: if (roffit_lines == 1) {
1404: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1405: free(buf->buf);
1406: buf->buf = p;
1407: buf->sz = isz + 1;
1408: *offs = 0;
1409: free(roffit_macro);
1410: roffit_lines = 0;
1.149 schwarze 1411: return ROFF_REPARSE;
1.147 schwarze 1412: } else if (roffit_lines > 1)
1413: --roffit_lines;
1414:
1.177 schwarze 1415: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1416: if (roffce_lines < 1) {
1417: r->man->last = roffce_node;
1418: r->man->next = ROFF_NEXT_SIBLING;
1419: roffce_lines = 0;
1420: roffce_node = NULL;
1421: } else
1422: roffce_lines--;
1423: }
1424:
1.147 schwarze 1425: /* Convert all breakable hyphens into ASCII_HYPH. */
1426:
1.110 schwarze 1427: start = p = buf->buf + pos;
1.42 schwarze 1428:
1.110 schwarze 1429: while (*p != '\0') {
1.42 schwarze 1430: sz = strcspn(p, "-\\");
1431: p += sz;
1432:
1.110 schwarze 1433: if (*p == '\0')
1.42 schwarze 1434: break;
1435:
1.110 schwarze 1436: if (*p == '\\') {
1.42 schwarze 1437: /* Skip over escapes. */
1438: p++;
1.62 schwarze 1439: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1440: if (esc == ESCAPE_ERROR)
1.42 schwarze 1441: break;
1.136 schwarze 1442: while (*p == '-')
1443: p++;
1.42 schwarze 1444: continue;
1445: } else if (p == start) {
1446: p++;
1447: continue;
1448: }
1449:
1.44 schwarze 1450: if (isalpha((unsigned char)p[-1]) &&
1451: isalpha((unsigned char)p[1]))
1.42 schwarze 1452: *p = ASCII_HYPH;
1453: p++;
1.8 schwarze 1454: }
1.149 schwarze 1455: return ROFF_CONT;
1.8 schwarze 1456: }
1457:
1.1 schwarze 1458: enum rofferr
1.110 schwarze 1459: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1460: {
1.166 schwarze 1461: enum roff_tok t;
1.27 schwarze 1462: enum rofferr e;
1.110 schwarze 1463: int pos; /* parse point */
1.115 schwarze 1464: int spos; /* saved parse point for messages */
1.110 schwarze 1465: int ppos; /* original offset in buf->buf */
1466: int ctl; /* macro line (boolean) */
1467:
1468: ppos = pos = *offs;
1.1 schwarze 1469:
1.102 schwarze 1470: /* Handle in-line equation delimiters. */
1471:
1.108 schwarze 1472: if (r->tbl == NULL &&
1473: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1474: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1475: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1476: if (e == ROFF_REPARSE)
1.149 schwarze 1477: return e;
1.102 schwarze 1478: assert(e == ROFF_CONT);
1479: }
1480:
1481: /* Expand some escape sequences. */
1.8 schwarze 1482:
1.110 schwarze 1483: e = roff_res(r, buf, ln, pos);
1.175 schwarze 1484: if (e == ROFF_IGN || e == ROFF_APPEND)
1.149 schwarze 1485: return e;
1.110 schwarze 1486: assert(e == ROFF_CONT);
1.8 schwarze 1487:
1.110 schwarze 1488: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1489:
1.8 schwarze 1490: /*
1.2 schwarze 1491: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1492: * text through the macro's filter.
1493: * Equations process all content themselves.
1494: * Tables process almost all content themselves, but we want
1495: * to warn about macros before passing it there.
1.2 schwarze 1496: */
1497:
1.124 schwarze 1498: if (r->last != NULL && ! ctl) {
1.2 schwarze 1499: t = r->last->tok;
1.110 schwarze 1500: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.166 schwarze 1501: if (e == ROFF_IGN)
1.149 schwarze 1502: return e;
1.166 schwarze 1503: assert(e == ROFF_CONT);
1.54 schwarze 1504: }
1.191 schwarze 1505: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1506: eqn_read(r->eqn, buf->buf + ppos);
1507: return ROFF_IGN;
1508: }
1.193 schwarze 1509: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1510: tbl_read(r->tbl, ln, buf->buf, ppos);
1511: roff_addtbl(r->man, r->tbl);
1512: return ROFF_IGN;
1513: }
1.124 schwarze 1514: if ( ! ctl)
1.177 schwarze 1515: return roff_parsetext(r, buf, pos, offs);
1.100 schwarze 1516:
1517: /* Skip empty request lines. */
1518:
1.110 schwarze 1519: if (buf->buf[pos] == '"') {
1.100 schwarze 1520: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1521: ln, pos, NULL);
1.149 schwarze 1522: return ROFF_IGN;
1.110 schwarze 1523: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1524: return ROFF_IGN;
1.2 schwarze 1525:
1526: /*
1527: * If a scope is open, go to the child handler for that macro,
1528: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1529: * Don't do so if an equation is open.
1.2 schwarze 1530: */
1531:
1532: if (r->last) {
1.1 schwarze 1533: t = r->last->tok;
1.149 schwarze 1534: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1535: }
1536:
1.115 schwarze 1537: /* No scope is open. This is a new request or macro. */
1538:
1539: spos = pos;
1540: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1541:
1542: /* Tables ignore most macros. */
1543:
1.180 schwarze 1544: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1545: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.115 schwarze 1546: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1547: ln, pos, buf->buf + spos);
1.180 schwarze 1548: if (t != TOKEN_NONE)
1.149 schwarze 1549: return ROFF_IGN;
1.129 schwarze 1550: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1551: pos++;
1.163 schwarze 1552: while (buf->buf[pos] == ' ')
1.129 schwarze 1553: pos++;
1.193 schwarze 1554: tbl_read(r->tbl, ln, buf->buf, pos);
1555: roff_addtbl(r->man, r->tbl);
1556: return ROFF_IGN;
1.115 schwarze 1557: }
1558:
1.177 schwarze 1559: /* For now, let high level macros abort .ce mode. */
1560:
1561: if (ctl && roffce_node != NULL &&
1.196 schwarze 1562: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1563: t == ROFF_TH || t == ROFF_TS)) {
1.177 schwarze 1564: r->man->last = roffce_node;
1565: r->man->next = ROFF_NEXT_SIBLING;
1566: roffce_lines = 0;
1567: roffce_node = NULL;
1568: }
1569:
1.2 schwarze 1570: /*
1.115 schwarze 1571: * This is neither a roff request nor a user-defined macro.
1572: * Let the standard macro set parsers handle it.
1.2 schwarze 1573: */
1574:
1.166 schwarze 1575: if (t == TOKEN_NONE)
1.149 schwarze 1576: return ROFF_CONT;
1.115 schwarze 1577:
1578: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1579:
1.168 schwarze 1580: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1581: }
1582:
1.27 schwarze 1583: void
1.2 schwarze 1584: roff_endparse(struct roff *r)
1585: {
1.193 schwarze 1586: if (r->last != NULL)
1.94 schwarze 1587: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1588: r->last->line, r->last->col,
1.167 schwarze 1589: roff_name[r->last->tok]);
1.27 schwarze 1590:
1.193 schwarze 1591: if (r->eqn != NULL) {
1.94 schwarze 1592: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.191 schwarze 1593: r->eqn->node->line, r->eqn->node->pos, "EQ");
1594: eqn_parse(r->eqn);
1595: r->eqn = NULL;
1.32 schwarze 1596: }
1597:
1.193 schwarze 1598: if (r->tbl != NULL) {
1.94 schwarze 1599: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1600: r->tbl->line, r->tbl->pos, "TS");
1.193 schwarze 1601: tbl_end(r->tbl);
1602: r->tbl = NULL;
1.27 schwarze 1603: }
1.1 schwarze 1604: }
1605:
1606: /*
1607: * Parse a roff node's type from the input buffer. This must be in the
1608: * form of ".foo xxx" in the usual way.
1609: */
1.166 schwarze 1610: static enum roff_tok
1.87 schwarze 1611: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1612: {
1.87 schwarze 1613: char *cp;
1.16 schwarze 1614: const char *mac;
1615: size_t maclen;
1.187 schwarze 1616: int deftype;
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:
1.187 schwarze 1627: deftype = ROFFDEF_USER | ROFFDEF_REN;
1628: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1629: switch (deftype) {
1630: case ROFFDEF_USER:
1631: t = ROFF_USERDEF;
1632: break;
1633: case ROFFDEF_REN:
1634: t = ROFF_RENAMED;
1635: break;
1636: default:
1637: t = roffhash_find(r->reqtab, mac, maclen);
1638: break;
1639: }
1.166 schwarze 1640: if (t != TOKEN_NONE)
1.87 schwarze 1641: *pos = cp - buf;
1.197 schwarze 1642: else if (deftype == ROFFDEF_UNDEF) {
1643: /* Using an undefined macro defines it to be empty. */
1644: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1645: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1646: }
1.149 schwarze 1647: return t;
1.1 schwarze 1648: }
1649:
1.138 schwarze 1650: /* --- handling of request blocks ----------------------------------------- */
1651:
1.1 schwarze 1652: static enum rofferr
1.2 schwarze 1653: roff_cblock(ROFF_ARGS)
1.1 schwarze 1654: {
1655:
1.2 schwarze 1656: /*
1657: * A block-close `..' should only be invoked as a child of an
1658: * ignore macro, otherwise raise a warning and just ignore it.
1659: */
1660:
1.110 schwarze 1661: if (r->last == NULL) {
1.94 schwarze 1662: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1663: ln, ppos, "..");
1.149 schwarze 1664: return ROFF_IGN;
1.2 schwarze 1665: }
1.1 schwarze 1666:
1.2 schwarze 1667: switch (r->last->tok) {
1.80 schwarze 1668: case ROFF_am:
1.93 schwarze 1669: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1670: case ROFF_ami:
1671: case ROFF_de:
1.23 schwarze 1672: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1673: case ROFF_dei:
1674: case ROFF_ig:
1.2 schwarze 1675: break;
1676: default:
1.94 schwarze 1677: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1678: ln, ppos, "..");
1.149 schwarze 1679: return ROFF_IGN;
1.2 schwarze 1680: }
1681:
1.110 schwarze 1682: if (buf->buf[pos] != '\0')
1.90 schwarze 1683: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1684: ".. %s", buf->buf + pos);
1.2 schwarze 1685:
1686: roffnode_pop(r);
1687: roffnode_cleanscope(r);
1.149 schwarze 1688: return ROFF_IGN;
1.2 schwarze 1689:
1690: }
1.1 schwarze 1691:
1.2 schwarze 1692: static void
1693: roffnode_cleanscope(struct roff *r)
1694: {
1.1 schwarze 1695:
1.2 schwarze 1696: while (r->last) {
1.46 schwarze 1697: if (--r->last->endspan != 0)
1.2 schwarze 1698: break;
1699: roffnode_pop(r);
1700: }
1701: }
1.1 schwarze 1702:
1.68 schwarze 1703: static void
1704: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1705: {
1.1 schwarze 1706:
1.2 schwarze 1707: if (NULL == r->last) {
1.94 schwarze 1708: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1709: ln, ppos, "\\}");
1.68 schwarze 1710: return;
1.2 schwarze 1711: }
1.1 schwarze 1712:
1.2 schwarze 1713: switch (r->last->tok) {
1.80 schwarze 1714: case ROFF_el:
1715: case ROFF_ie:
1716: case ROFF_if:
1.2 schwarze 1717: break;
1718: default:
1.94 schwarze 1719: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1720: ln, ppos, "\\}");
1.68 schwarze 1721: return;
1.2 schwarze 1722: }
1.1 schwarze 1723:
1.2 schwarze 1724: if (r->last->endspan > -1) {
1.94 schwarze 1725: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1726: ln, ppos, "\\}");
1.68 schwarze 1727: return;
1.2 schwarze 1728: }
1729:
1730: roffnode_pop(r);
1731: roffnode_cleanscope(r);
1.68 schwarze 1732: return;
1.1 schwarze 1733: }
1734:
1735: static enum rofferr
1.2 schwarze 1736: roff_block(ROFF_ARGS)
1.1 schwarze 1737: {
1.187 schwarze 1738: const char *name, *value;
1739: char *call, *cp, *iname, *rname;
1740: size_t csz, namesz, rsz;
1741: int deftype;
1.16 schwarze 1742:
1.93 schwarze 1743: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1744:
1.110 schwarze 1745: if (tok == ROFF_de1)
1.93 schwarze 1746: tok = ROFF_de;
1.123 schwarze 1747: else if (tok == ROFF_dei1)
1748: tok = ROFF_dei;
1.110 schwarze 1749: else if (tok == ROFF_am1)
1.93 schwarze 1750: tok = ROFF_am;
1.123 schwarze 1751: else if (tok == ROFF_ami1)
1752: tok = ROFF_ami;
1.93 schwarze 1753:
1754: /* Parse the macro name argument. */
1755:
1.110 schwarze 1756: cp = buf->buf + pos;
1757: if (tok == ROFF_ig) {
1.93 schwarze 1758: iname = NULL;
1759: namesz = 0;
1760: } else {
1761: iname = cp;
1762: namesz = roff_getname(r, &cp, ln, ppos);
1763: iname[namesz] = '\0';
1764: }
1.22 schwarze 1765:
1.93 schwarze 1766: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1767:
1.110 schwarze 1768: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1769: deftype = ROFFDEF_USER;
1770: name = roff_getstrn(r, iname, namesz, &deftype);
1771: if (name == NULL) {
1.93 schwarze 1772: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1773: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1774: "%.*s", (int)namesz, iname);
1775: namesz = 0;
1776: } else
1777: namesz = strlen(name);
1778: } else
1779: name = iname;
1.22 schwarze 1780:
1.110 schwarze 1781: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1782: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1783: ln, ppos, roff_name[tok]);
1.149 schwarze 1784: return ROFF_IGN;
1.93 schwarze 1785: }
1.2 schwarze 1786:
1.16 schwarze 1787: roffnode_push(r, tok, name, ln, ppos);
1788:
1789: /*
1790: * At the beginning of a `de' macro, clear the existing string
1791: * with the same name, if there is one. New content will be
1.66 schwarze 1792: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1793: */
1.22 schwarze 1794:
1.183 schwarze 1795: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 1796: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 1797: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 1798: } else if (tok == ROFF_am || tok == ROFF_ami) {
1799: deftype = ROFFDEF_ANY;
1800: value = roff_getstrn(r, iname, namesz, &deftype);
1801: switch (deftype) { /* Before appending, ... */
1802: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1803: roff_setstrn(&r->strtab, name, namesz,
1804: value, strlen(value), 0);
1805: break;
1806: case ROFFDEF_REN: /* call original standard macro. */
1807: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1808: (int)strlen(value), value);
1809: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1810: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1811: free(call);
1812: break;
1813: case ROFFDEF_STD: /* rename and call standard macro. */
1814: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1815: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1816: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1817: (int)rsz, rname);
1818: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1819: free(call);
1820: free(rname);
1821: break;
1822: default:
1823: break;
1824: }
1.183 schwarze 1825: }
1.2 schwarze 1826:
1.110 schwarze 1827: if (*cp == '\0')
1.149 schwarze 1828: return ROFF_IGN;
1.1 schwarze 1829:
1.93 schwarze 1830: /* Get the custom end marker. */
1.22 schwarze 1831:
1.93 schwarze 1832: iname = cp;
1.86 schwarze 1833: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1834:
1835: /* Resolve the end marker if it is indirect. */
1836:
1.110 schwarze 1837: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1838: deftype = ROFFDEF_USER;
1839: name = roff_getstrn(r, iname, namesz, &deftype);
1840: if (name == NULL) {
1.93 schwarze 1841: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1842: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1843: "%.*s", (int)namesz, iname);
1844: namesz = 0;
1845: } else
1846: namesz = strlen(name);
1847: } else
1848: name = iname;
1849:
1.86 schwarze 1850: if (namesz)
1851: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1852:
1.110 schwarze 1853: if (*cp != '\0')
1.90 schwarze 1854: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 1855: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 1856:
1.149 schwarze 1857: return ROFF_IGN;
1.1 schwarze 1858: }
1859:
1860: static enum rofferr
1.2 schwarze 1861: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1862: {
1.166 schwarze 1863: enum roff_tok t;
1.2 schwarze 1864: int i, j;
1865:
1866: /*
1867: * First check whether a custom macro exists at this level. If
1868: * it does, then check against it. This is some of groff's
1869: * stranger behaviours. If we encountered a custom end-scope
1870: * tag and that tag also happens to be a "real" macro, then we
1871: * need to try interpreting it again as a real macro. If it's
1872: * not, then return ignore. Else continue.
1873: */
1874:
1875: if (r->last->end) {
1.35 schwarze 1876: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1877: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1878: break;
1.1 schwarze 1879:
1.110 schwarze 1880: if (r->last->end[j] == '\0' &&
1881: (buf->buf[i] == '\0' ||
1882: buf->buf[i] == ' ' ||
1883: buf->buf[i] == '\t')) {
1.2 schwarze 1884: roffnode_pop(r);
1885: roffnode_cleanscope(r);
1.1 schwarze 1886:
1.110 schwarze 1887: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1888: i++;
1889:
1890: pos = i;
1.110 schwarze 1891: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 1892: TOKEN_NONE)
1.149 schwarze 1893: return ROFF_RERUN;
1894: return ROFF_IGN;
1.2 schwarze 1895: }
1.1 schwarze 1896: }
1897:
1.2 schwarze 1898: /*
1899: * If we have no custom end-query or lookup failed, then try
1900: * pulling it out of the hashtable.
1901: */
1.1 schwarze 1902:
1.110 schwarze 1903: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1904:
1.110 schwarze 1905: if (t != ROFF_cblock) {
1906: if (tok != ROFF_ig)
1907: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1908: return ROFF_IGN;
1.16 schwarze 1909: }
1.1 schwarze 1910:
1.149 schwarze 1911: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1912: }
1913:
1914: static enum rofferr
1915: roff_block_text(ROFF_ARGS)
1916: {
1917:
1.110 schwarze 1918: if (tok != ROFF_ig)
1919: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1920:
1.149 schwarze 1921: return ROFF_IGN;
1.2 schwarze 1922: }
1923:
1924: static enum rofferr
1925: roff_cond_sub(ROFF_ARGS)
1926: {
1.166 schwarze 1927: enum roff_tok t;
1.37 schwarze 1928: char *ep;
1.71 schwarze 1929: int rr;
1.2 schwarze 1930:
1931: rr = r->last->rule;
1.37 schwarze 1932: roffnode_cleanscope(r);
1.39 schwarze 1933:
1.69 schwarze 1934: /*
1935: * If `\}' occurs on a macro line without a preceding macro,
1936: * drop the line completely.
1937: */
1938:
1.110 schwarze 1939: ep = buf->buf + pos;
1940: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1941: rr = 0;
1.69 schwarze 1942:
1.50 schwarze 1943: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1944:
1.110 schwarze 1945: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 1946: switch (ep[1]) {
1947: case '}':
1948: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1949: roff_ccond(r, ln, ep - buf->buf);
1950: break;
1951: case '\0':
1952: ++ep;
1953: break;
1954: default:
1955: ep += 2;
1956: break;
1.70 schwarze 1957: }
1.50 schwarze 1958: }
1.190 schwarze 1959:
1960: /*
1961: * Fully handle known macros when they are structurally
1962: * required or when the conditional evaluated to true.
1963: */
1964:
1965: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1966: return t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT)
1967: ? (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) : rr
1968: ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1969: }
1970:
1971: static enum rofferr
1972: roff_cond_text(ROFF_ARGS)
1973: {
1.37 schwarze 1974: char *ep;
1.71 schwarze 1975: int rr;
1.2 schwarze 1976:
1977: rr = r->last->rule;
1.37 schwarze 1978: roffnode_cleanscope(r);
1.1 schwarze 1979:
1.110 schwarze 1980: ep = buf->buf + pos;
1981: while ((ep = strchr(ep, '\\')) != NULL) {
1982: if (*(++ep) == '}') {
1.70 schwarze 1983: *ep = '&';
1.110 schwarze 1984: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1985: }
1.119 schwarze 1986: if (*ep != '\0')
1987: ++ep;
1.2 schwarze 1988: }
1.149 schwarze 1989: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1990: }
1991:
1.138 schwarze 1992: /* --- handling of numeric and conditional expressions -------------------- */
1993:
1.77 schwarze 1994: /*
1995: * Parse a single signed integer number. Stop at the first non-digit.
1996: * If there is at least one digit, return success and advance the
1997: * parse point, else return failure and let the parse point unchanged.
1998: * Ignore overflows, treat them just like the C language.
1999: */
1.56 schwarze 2000: static int
1.133 schwarze 2001: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2002: {
1.133 schwarze 2003: int myres, scaled, n, p;
1.79 schwarze 2004:
2005: if (NULL == res)
2006: res = &myres;
1.56 schwarze 2007:
2008: p = *pos;
2009: n = v[p] == '-';
1.133 schwarze 2010: if (n || v[p] == '+')
1.56 schwarze 2011: p++;
2012:
1.133 schwarze 2013: if (flags & ROFFNUM_WHITE)
2014: while (isspace((unsigned char)v[p]))
2015: p++;
2016:
1.56 schwarze 2017: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2018: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2019: if (p == *pos + n)
2020: return 0;
2021:
2022: if (n)
2023: *res = -*res;
2024:
1.126 schwarze 2025: /* Each number may be followed by one optional scaling unit. */
2026:
2027: switch (v[p]) {
2028: case 'f':
1.133 schwarze 2029: scaled = *res * 65536;
1.126 schwarze 2030: break;
2031: case 'i':
1.133 schwarze 2032: scaled = *res * 240;
1.126 schwarze 2033: break;
2034: case 'c':
1.133 schwarze 2035: scaled = *res * 240 / 2.54;
1.126 schwarze 2036: break;
2037: case 'v':
2038: case 'P':
1.133 schwarze 2039: scaled = *res * 40;
1.126 schwarze 2040: break;
2041: case 'm':
2042: case 'n':
1.133 schwarze 2043: scaled = *res * 24;
1.126 schwarze 2044: break;
2045: case 'p':
1.133 schwarze 2046: scaled = *res * 10 / 3;
1.126 schwarze 2047: break;
2048: case 'u':
1.133 schwarze 2049: scaled = *res;
1.126 schwarze 2050: break;
2051: case 'M':
1.133 schwarze 2052: scaled = *res * 6 / 25;
1.126 schwarze 2053: break;
2054: default:
1.133 schwarze 2055: scaled = *res;
1.126 schwarze 2056: p--;
2057: break;
2058: }
1.133 schwarze 2059: if (flags & ROFFNUM_SCALE)
2060: *res = scaled;
1.126 schwarze 2061:
2062: *pos = p + 1;
1.149 schwarze 2063: return 1;
1.56 schwarze 2064: }
2065:
1.71 schwarze 2066: /*
2067: * Evaluate a string comparison condition.
2068: * The first character is the delimiter.
2069: * Succeed if the string up to its second occurrence
2070: * matches the string up to its third occurence.
2071: * Advance the cursor after the third occurrence
2072: * or lacking that, to the end of the line.
2073: */
2074: static int
2075: roff_evalstrcond(const char *v, int *pos)
2076: {
2077: const char *s1, *s2, *s3;
2078: int match;
2079:
2080: match = 0;
2081: s1 = v + *pos; /* initial delimiter */
2082: s2 = s1 + 1; /* for scanning the first string */
2083: s3 = strchr(s2, *s1); /* for scanning the second string */
2084:
2085: if (NULL == s3) /* found no middle delimiter */
2086: goto out;
2087:
2088: while ('\0' != *++s3) {
2089: if (*s2 != *s3) { /* mismatch */
2090: s3 = strchr(s3, *s1);
2091: break;
2092: }
2093: if (*s3 == *s1) { /* found the final delimiter */
2094: match = 1;
2095: break;
2096: }
2097: s2++;
2098: }
2099:
2100: out:
2101: if (NULL == s3)
2102: s3 = strchr(s2, '\0');
1.114 schwarze 2103: else if (*s3 != '\0')
1.71 schwarze 2104: s3++;
2105: *pos = s3 - v;
1.149 schwarze 2106: return match;
1.71 schwarze 2107: }
2108:
1.77 schwarze 2109: /*
2110: * Evaluate an optionally negated single character, numerical,
2111: * or string condition.
2112: */
1.71 schwarze 2113: static int
1.143 schwarze 2114: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2115: {
1.143 schwarze 2116: char *cp, *name;
2117: size_t sz;
1.187 schwarze 2118: int deftype, number, savepos, istrue, wanttrue;
1.5 schwarze 2119:
1.71 schwarze 2120: if ('!' == v[*pos]) {
2121: wanttrue = 0;
2122: (*pos)++;
2123: } else
2124: wanttrue = 1;
2125:
1.5 schwarze 2126: switch (v[*pos]) {
1.112 schwarze 2127: case '\0':
1.149 schwarze 2128: return 0;
1.80 schwarze 2129: case 'n':
2130: case 'o':
1.5 schwarze 2131: (*pos)++;
1.149 schwarze 2132: return wanttrue;
1.80 schwarze 2133: case 'c':
2134: case 'e':
2135: case 't':
1.111 schwarze 2136: case 'v':
1.5 schwarze 2137: (*pos)++;
1.149 schwarze 2138: return !wanttrue;
1.182 schwarze 2139: case 'd':
1.143 schwarze 2140: case 'r':
1.182 schwarze 2141: cp = v + *pos + 1;
2142: while (*cp == ' ')
2143: cp++;
2144: name = cp;
2145: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2146: if (sz == 0)
2147: istrue = 0;
2148: else if (v[*pos] == 'r')
2149: istrue = roff_hasregn(r, name, sz);
2150: else {
2151: deftype = ROFFDEF_ANY;
2152: roff_getstrn(r, name, sz, &deftype);
2153: istrue = !!deftype;
2154: }
1.143 schwarze 2155: *pos = cp - v;
1.182 schwarze 2156: return istrue == wanttrue;
1.5 schwarze 2157: default:
2158: break;
2159: }
2160:
1.113 schwarze 2161: savepos = *pos;
1.133 schwarze 2162: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2163: return (number > 0) == wanttrue;
1.113 schwarze 2164: else if (*pos == savepos)
1.149 schwarze 2165: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2166: else
1.149 schwarze 2167: return 0;
1.5 schwarze 2168: }
2169:
1.2 schwarze 2170: static enum rofferr
1.21 schwarze 2171: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2172: {
1.30 schwarze 2173:
1.149 schwarze 2174: return ROFF_IGN;
1.21 schwarze 2175: }
2176:
2177: static enum rofferr
1.123 schwarze 2178: roff_insec(ROFF_ARGS)
2179: {
2180:
2181: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2182: ln, ppos, roff_name[tok]);
1.149 schwarze 2183: return ROFF_IGN;
1.123 schwarze 2184: }
2185:
2186: static enum rofferr
2187: roff_unsupp(ROFF_ARGS)
2188: {
2189:
2190: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2191: ln, ppos, roff_name[tok]);
1.149 schwarze 2192: return ROFF_IGN;
1.123 schwarze 2193: }
2194:
2195: static enum rofferr
1.2 schwarze 2196: roff_cond(ROFF_ARGS)
2197: {
1.46 schwarze 2198:
2199: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2200:
1.80 schwarze 2201: /*
1.35 schwarze 2202: * An `.el' has no conditional body: it will consume the value
2203: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2204: * defaults to DENY.
1.35 schwarze 2205: *
2206: * If we're not an `el', however, then evaluate the conditional.
2207: */
1.1 schwarze 2208:
1.110 schwarze 2209: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2210: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2211: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2212:
1.35 schwarze 2213: /*
2214: * An if-else will put the NEGATION of the current evaluated
2215: * conditional into the stack of rules.
2216: */
2217:
1.110 schwarze 2218: if (tok == ROFF_ie) {
1.96 schwarze 2219: if (r->rstackpos + 1 == r->rstacksz) {
2220: r->rstacksz += 16;
2221: r->rstack = mandoc_reallocarray(r->rstack,
2222: r->rstacksz, sizeof(int));
1.35 schwarze 2223: }
1.71 schwarze 2224: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2225: }
1.5 schwarze 2226:
2227: /* If the parent has false as its rule, then so do we. */
2228:
1.71 schwarze 2229: if (r->last->parent && !r->last->parent->rule)
2230: r->last->rule = 0;
1.5 schwarze 2231:
2232: /*
1.46 schwarze 2233: * Determine scope.
2234: * If there is nothing on the line after the conditional,
2235: * not even whitespace, use next-line scope.
1.5 schwarze 2236: */
1.2 schwarze 2237:
1.110 schwarze 2238: if (buf->buf[pos] == '\0') {
1.46 schwarze 2239: r->last->endspan = 2;
2240: goto out;
2241: }
2242:
1.110 schwarze 2243: while (buf->buf[pos] == ' ')
1.46 schwarze 2244: pos++;
2245:
2246: /* An opening brace requests multiline scope. */
1.2 schwarze 2247:
1.110 schwarze 2248: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2249: r->last->endspan = -1;
2250: pos += 2;
1.144 schwarze 2251: while (buf->buf[pos] == ' ')
2252: pos++;
1.46 schwarze 2253: goto out;
1.80 schwarze 2254: }
1.2 schwarze 2255:
2256: /*
1.46 schwarze 2257: * Anything else following the conditional causes
2258: * single-line scope. Warn if the scope contains
2259: * nothing but trailing whitespace.
1.2 schwarze 2260: */
2261:
1.110 schwarze 2262: if (buf->buf[pos] == '\0')
1.89 schwarze 2263: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2264: ln, ppos, roff_name[tok]);
1.2 schwarze 2265:
1.46 schwarze 2266: r->last->endspan = 1;
1.1 schwarze 2267:
1.46 schwarze 2268: out:
1.2 schwarze 2269: *offs = pos;
1.149 schwarze 2270: return ROFF_RERUN;
1.1 schwarze 2271: }
2272:
1.2 schwarze 2273: static enum rofferr
1.7 schwarze 2274: roff_ds(ROFF_ARGS)
2275: {
1.85 schwarze 2276: char *string;
2277: const char *name;
2278: size_t namesz;
1.10 schwarze 2279:
1.123 schwarze 2280: /* Ignore groff compatibility mode for now. */
2281:
2282: if (tok == ROFF_ds1)
2283: tok = ROFF_ds;
2284: else if (tok == ROFF_as1)
2285: tok = ROFF_as;
2286:
1.10 schwarze 2287: /*
1.85 schwarze 2288: * The first word is the name of the string.
2289: * If it is empty or terminated by an escape sequence,
2290: * abort the `ds' request without defining anything.
1.10 schwarze 2291: */
1.7 schwarze 2292:
1.110 schwarze 2293: name = string = buf->buf + pos;
2294: if (*name == '\0')
1.149 schwarze 2295: return ROFF_IGN;
1.7 schwarze 2296:
1.85 schwarze 2297: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2298: if (name[namesz] == '\\')
1.149 schwarze 2299: return ROFF_IGN;
1.85 schwarze 2300:
2301: /* Read past the initial double-quote, if any. */
1.110 schwarze 2302: if (*string == '"')
1.7 schwarze 2303: string++;
2304:
1.10 schwarze 2305: /* The rest is the value. */
1.85 schwarze 2306: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2307: ROFF_as == tok);
1.183 schwarze 2308: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2309: return ROFF_IGN;
1.7 schwarze 2310: }
2311:
1.77 schwarze 2312: /*
2313: * Parse a single operator, one or two characters long.
2314: * If the operator is recognized, return success and advance the
2315: * parse point, else return failure and let the parse point unchanged.
2316: */
2317: static int
2318: roff_getop(const char *v, int *pos, char *res)
2319: {
2320:
2321: *res = v[*pos];
2322:
2323: switch (*res) {
1.80 schwarze 2324: case '+':
2325: case '-':
2326: case '*':
2327: case '/':
2328: case '%':
2329: case '&':
2330: case ':':
1.77 schwarze 2331: break;
2332: case '<':
2333: switch (v[*pos + 1]) {
1.80 schwarze 2334: case '=':
1.77 schwarze 2335: *res = 'l';
2336: (*pos)++;
2337: break;
1.80 schwarze 2338: case '>':
1.77 schwarze 2339: *res = '!';
2340: (*pos)++;
2341: break;
1.80 schwarze 2342: case '?':
1.77 schwarze 2343: *res = 'i';
2344: (*pos)++;
2345: break;
2346: default:
2347: break;
2348: }
2349: break;
2350: case '>':
2351: switch (v[*pos + 1]) {
1.80 schwarze 2352: case '=':
1.77 schwarze 2353: *res = 'g';
2354: (*pos)++;
2355: break;
1.80 schwarze 2356: case '?':
1.77 schwarze 2357: *res = 'a';
2358: (*pos)++;
2359: break;
2360: default:
2361: break;
2362: }
2363: break;
2364: case '=':
2365: if ('=' == v[*pos + 1])
2366: (*pos)++;
2367: break;
2368: default:
1.149 schwarze 2369: return 0;
1.77 schwarze 2370: }
2371: (*pos)++;
2372:
1.149 schwarze 2373: return *res;
1.77 schwarze 2374: }
2375:
2376: /*
2377: * Evaluate either a parenthesized numeric expression
2378: * or a single signed integer number.
2379: */
2380: static int
1.106 schwarze 2381: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2382: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2383: {
2384:
2385: if ('(' != v[*pos])
1.149 schwarze 2386: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2387:
2388: (*pos)++;
1.133 schwarze 2389: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2390: return 0;
1.77 schwarze 2391:
1.79 schwarze 2392: /*
2393: * Omission of the closing parenthesis
2394: * is an error in validation mode,
2395: * but ignored in evaluation mode.
2396: */
2397:
1.77 schwarze 2398: if (')' == v[*pos])
2399: (*pos)++;
1.79 schwarze 2400: else if (NULL == res)
1.149 schwarze 2401: return 0;
1.77 schwarze 2402:
1.149 schwarze 2403: return 1;
1.77 schwarze 2404: }
2405:
2406: /*
2407: * Evaluate a complete numeric expression.
2408: * Proceed left to right, there is no concept of precedence.
2409: */
2410: static int
1.106 schwarze 2411: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2412: int *pos, int *res, int flags)
1.77 schwarze 2413: {
2414: int mypos, operand2;
2415: char operator;
2416:
2417: if (NULL == pos) {
2418: mypos = 0;
2419: pos = &mypos;
2420: }
2421:
1.133 schwarze 2422: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2423: while (isspace((unsigned char)v[*pos]))
2424: (*pos)++;
2425:
1.133 schwarze 2426: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2427: return 0;
1.77 schwarze 2428:
2429: while (1) {
1.133 schwarze 2430: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2431: while (isspace((unsigned char)v[*pos]))
2432: (*pos)++;
2433:
2434: if ( ! roff_getop(v, pos, &operator))
2435: break;
2436:
1.133 schwarze 2437: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2438: while (isspace((unsigned char)v[*pos]))
2439: (*pos)++;
2440:
1.133 schwarze 2441: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2442: return 0;
1.77 schwarze 2443:
1.133 schwarze 2444: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2445: while (isspace((unsigned char)v[*pos]))
2446: (*pos)++;
1.79 schwarze 2447:
2448: if (NULL == res)
2449: continue;
1.77 schwarze 2450:
2451: switch (operator) {
1.80 schwarze 2452: case '+':
1.77 schwarze 2453: *res += operand2;
2454: break;
1.80 schwarze 2455: case '-':
1.77 schwarze 2456: *res -= operand2;
2457: break;
1.80 schwarze 2458: case '*':
1.77 schwarze 2459: *res *= operand2;
2460: break;
1.80 schwarze 2461: case '/':
1.116 schwarze 2462: if (operand2 == 0) {
1.106 schwarze 2463: mandoc_msg(MANDOCERR_DIVZERO,
2464: r->parse, ln, *pos, v);
2465: *res = 0;
2466: break;
2467: }
1.77 schwarze 2468: *res /= operand2;
2469: break;
1.80 schwarze 2470: case '%':
1.116 schwarze 2471: if (operand2 == 0) {
2472: mandoc_msg(MANDOCERR_DIVZERO,
2473: r->parse, ln, *pos, v);
2474: *res = 0;
2475: break;
2476: }
1.77 schwarze 2477: *res %= operand2;
2478: break;
1.80 schwarze 2479: case '<':
1.77 schwarze 2480: *res = *res < operand2;
2481: break;
1.80 schwarze 2482: case '>':
1.77 schwarze 2483: *res = *res > operand2;
2484: break;
1.80 schwarze 2485: case 'l':
1.77 schwarze 2486: *res = *res <= operand2;
2487: break;
1.80 schwarze 2488: case 'g':
1.77 schwarze 2489: *res = *res >= operand2;
2490: break;
1.80 schwarze 2491: case '=':
1.77 schwarze 2492: *res = *res == operand2;
2493: break;
1.80 schwarze 2494: case '!':
1.77 schwarze 2495: *res = *res != operand2;
2496: break;
1.80 schwarze 2497: case '&':
1.77 schwarze 2498: *res = *res && operand2;
2499: break;
1.80 schwarze 2500: case ':':
1.77 schwarze 2501: *res = *res || operand2;
2502: break;
1.80 schwarze 2503: case 'i':
1.77 schwarze 2504: if (operand2 < *res)
2505: *res = operand2;
2506: break;
1.80 schwarze 2507: case 'a':
1.77 schwarze 2508: if (operand2 > *res)
2509: *res = operand2;
2510: break;
2511: default:
2512: abort();
2513: }
2514: }
1.149 schwarze 2515: return 1;
1.77 schwarze 2516: }
2517:
1.138 schwarze 2518: /* --- register management ------------------------------------------------ */
2519:
1.52 schwarze 2520: void
1.60 schwarze 2521: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2522: {
1.198 ! schwarze 2523: roff_setregn(r, name, strlen(name), val, sign);
! 2524: }
! 2525:
! 2526: static void
! 2527: roff_setregn(struct roff *r, const char *name, size_t len,
! 2528: int val, char sign)
! 2529: {
1.52 schwarze 2530: struct roffreg *reg;
2531:
2532: /* Search for an existing register with the same name. */
2533: reg = r->regtab;
2534:
1.198 ! schwarze 2535: while (reg != NULL && (reg->key.sz != len ||
! 2536: strncmp(reg->key.p, name, len) != 0))
1.52 schwarze 2537: reg = reg->next;
1.41 schwarze 2538:
1.52 schwarze 2539: if (NULL == reg) {
2540: /* Create a new register. */
2541: reg = mandoc_malloc(sizeof(struct roffreg));
1.198 ! schwarze 2542: reg->key.p = mandoc_strndup(name, len);
! 2543: reg->key.sz = len;
1.60 schwarze 2544: reg->val = 0;
1.52 schwarze 2545: reg->next = r->regtab;
2546: r->regtab = reg;
2547: }
2548:
1.60 schwarze 2549: if ('+' == sign)
2550: reg->val += val;
2551: else if ('-' == sign)
2552: reg->val -= val;
2553: else
2554: reg->val = val;
1.41 schwarze 2555: }
2556:
1.65 schwarze 2557: /*
2558: * Handle some predefined read-only number registers.
2559: * For now, return -1 if the requested register is not predefined;
2560: * in case a predefined read-only register having the value -1
2561: * were to turn up, another special value would have to be chosen.
2562: */
2563: static int
1.145 schwarze 2564: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2565: {
2566:
2567: switch (*name) {
1.145 schwarze 2568: case '$': /* Number of arguments of the last macro evaluated. */
1.149 schwarze 2569: return r->argc;
1.80 schwarze 2570: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2571: return 0;
1.80 schwarze 2572: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2573: return 1;
1.80 schwarze 2574: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2575: return 24;
1.80 schwarze 2576: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2577: return 0;
1.80 schwarze 2578: case 'T': /* Some output device is always defined. */
1.149 schwarze 2579: return 1;
1.80 schwarze 2580: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2581: return 40;
1.65 schwarze 2582: default:
1.149 schwarze 2583: return -1;
1.65 schwarze 2584: }
2585: }
2586:
1.53 schwarze 2587: int
1.198 ! schwarze 2588: roff_getreg(struct roff *r, const char *name)
1.41 schwarze 2589: {
1.198 ! schwarze 2590: return roff_getregn(r, name, strlen(name));
1.53 schwarze 2591: }
2592:
2593: static int
1.198 ! schwarze 2594: roff_getregn(struct roff *r, const char *name, size_t len)
1.53 schwarze 2595: {
2596: struct roffreg *reg;
1.65 schwarze 2597: int val;
2598:
2599: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2600: val = roff_getregro(r, name + 1);
1.65 schwarze 2601: if (-1 != val)
1.149 schwarze 2602: return val;
1.65 schwarze 2603: }
1.53 schwarze 2604:
2605: for (reg = r->regtab; reg; reg = reg->next)
2606: if (len == reg->key.sz &&
2607: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2608: return reg->val;
1.143 schwarze 2609:
1.198 ! schwarze 2610: roff_setregn(r, name, len, 0, '\0');
1.149 schwarze 2611: return 0;
1.143 schwarze 2612: }
2613:
2614: static int
2615: roff_hasregn(const struct roff *r, const char *name, size_t len)
2616: {
2617: struct roffreg *reg;
2618: int val;
2619:
2620: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2621: val = roff_getregro(r, name + 1);
1.143 schwarze 2622: if (-1 != val)
1.149 schwarze 2623: return 1;
1.143 schwarze 2624: }
2625:
2626: for (reg = r->regtab; reg; reg = reg->next)
2627: if (len == reg->key.sz &&
2628: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2629: return 1;
1.41 schwarze 2630:
1.149 schwarze 2631: return 0;
1.41 schwarze 2632: }
2633:
1.52 schwarze 2634: static void
2635: roff_freereg(struct roffreg *reg)
1.41 schwarze 2636: {
1.52 schwarze 2637: struct roffreg *old_reg;
1.41 schwarze 2638:
1.52 schwarze 2639: while (NULL != reg) {
2640: free(reg->key.p);
2641: old_reg = reg;
2642: reg = reg->next;
2643: free(old_reg);
2644: }
1.41 schwarze 2645: }
1.7 schwarze 2646:
2647: static enum rofferr
1.6 schwarze 2648: roff_nr(ROFF_ARGS)
1.1 schwarze 2649: {
1.85 schwarze 2650: char *key, *val;
2651: size_t keysz;
1.37 schwarze 2652: int iv;
1.60 schwarze 2653: char sign;
1.6 schwarze 2654:
1.110 schwarze 2655: key = val = buf->buf + pos;
2656: if (*key == '\0')
1.149 schwarze 2657: return ROFF_IGN;
1.85 schwarze 2658:
2659: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2660: if (key[keysz] == '\\')
1.149 schwarze 2661: return ROFF_IGN;
1.6 schwarze 2662:
1.60 schwarze 2663: sign = *val;
1.110 schwarze 2664: if (sign == '+' || sign == '-')
1.60 schwarze 2665: val++;
2666:
1.133 schwarze 2667: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.198 ! schwarze 2668: roff_setregn(r, key, keysz, iv, sign);
1.1 schwarze 2669:
1.149 schwarze 2670: return ROFF_IGN;
1.76 schwarze 2671: }
2672:
2673: static enum rofferr
2674: roff_rr(ROFF_ARGS)
2675: {
2676: struct roffreg *reg, **prev;
1.85 schwarze 2677: char *name, *cp;
2678: size_t namesz;
1.76 schwarze 2679:
1.110 schwarze 2680: name = cp = buf->buf + pos;
2681: if (*name == '\0')
1.149 schwarze 2682: return ROFF_IGN;
1.85 schwarze 2683: namesz = roff_getname(r, &cp, ln, pos);
2684: name[namesz] = '\0';
1.76 schwarze 2685:
2686: prev = &r->regtab;
2687: while (1) {
2688: reg = *prev;
1.110 schwarze 2689: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2690: break;
2691: prev = ®->next;
2692: }
1.110 schwarze 2693: if (reg != NULL) {
1.76 schwarze 2694: *prev = reg->next;
2695: free(reg->key.p);
2696: free(reg);
2697: }
1.149 schwarze 2698: return ROFF_IGN;
1.29 schwarze 2699: }
2700:
1.138 schwarze 2701: /* --- handler functions for roff requests -------------------------------- */
2702:
1.29 schwarze 2703: static enum rofferr
2704: roff_rm(ROFF_ARGS)
2705: {
2706: const char *name;
2707: char *cp;
1.85 schwarze 2708: size_t namesz;
1.29 schwarze 2709:
1.110 schwarze 2710: cp = buf->buf + pos;
2711: while (*cp != '\0') {
1.85 schwarze 2712: name = cp;
1.110 schwarze 2713: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2714: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 2715: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 2716: if (name[namesz] == '\\')
1.85 schwarze 2717: break;
1.29 schwarze 2718: }
1.149 schwarze 2719: return ROFF_IGN;
1.51 schwarze 2720: }
2721:
2722: static enum rofferr
2723: roff_it(ROFF_ARGS)
2724: {
2725: int iv;
2726:
2727: /* Parse the number of lines. */
1.133 schwarze 2728:
2729: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2730: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2731: ln, ppos, buf->buf + 1);
1.149 schwarze 2732: return ROFF_IGN;
1.51 schwarze 2733: }
2734:
1.134 schwarze 2735: while (isspace((unsigned char)buf->buf[pos]))
2736: pos++;
2737:
2738: /*
2739: * Arm the input line trap.
2740: * Special-casing "an-trap" is an ugly workaround to cope
2741: * with DocBook stupidly fiddling with man(7) internals.
2742: */
1.133 schwarze 2743:
1.51 schwarze 2744: roffit_lines = iv;
1.134 schwarze 2745: roffit_macro = mandoc_strdup(iv != 1 ||
2746: strcmp(buf->buf + pos, "an-trap") ?
2747: buf->buf + pos : "br");
1.149 schwarze 2748: return ROFF_IGN;
1.47 schwarze 2749: }
2750:
2751: static enum rofferr
2752: roff_Dd(ROFF_ARGS)
2753: {
1.187 schwarze 2754: int mask;
2755: enum roff_tok t, te;
1.99 schwarze 2756:
1.187 schwarze 2757: switch (tok) {
2758: case ROFF_Dd:
2759: tok = MDOC_Dd;
2760: te = MDOC_MAX;
2761: if (r->format == 0)
2762: r->format = MPARSE_MDOC;
2763: mask = MPARSE_MDOC | MPARSE_QUICK;
2764: break;
2765: case ROFF_TH:
2766: tok = MAN_TH;
2767: te = MAN_MAX;
2768: if (r->format == 0)
2769: r->format = MPARSE_MAN;
2770: mask = MPARSE_QUICK;
2771: break;
2772: default:
2773: abort();
2774: }
2775: if ((r->options & mask) == 0)
2776: for (t = tok; t < te; t++)
2777: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 2778: return ROFF_CONT;
1.14 schwarze 2779: }
2780:
2781: static enum rofferr
1.27 schwarze 2782: roff_TE(ROFF_ARGS)
2783: {
1.193 schwarze 2784: if (r->tbl == NULL) {
1.94 schwarze 2785: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2786: ln, ppos, "TE");
1.193 schwarze 2787: return ROFF_IGN;
2788: }
2789: if (tbl_end(r->tbl) == 0) {
2790: r->tbl = NULL;
1.130 schwarze 2791: free(buf->buf);
2792: buf->buf = mandoc_strdup(".sp");
2793: buf->sz = 4;
1.149 schwarze 2794: return ROFF_REPARSE;
1.130 schwarze 2795: }
1.193 schwarze 2796: r->tbl = NULL;
1.149 schwarze 2797: return ROFF_IGN;
1.27 schwarze 2798: }
2799:
2800: static enum rofferr
2801: roff_T_(ROFF_ARGS)
2802: {
2803:
2804: if (NULL == r->tbl)
1.94 schwarze 2805: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2806: ln, ppos, "T&");
1.27 schwarze 2807: else
1.168 schwarze 2808: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 2809:
1.149 schwarze 2810: return ROFF_IGN;
1.27 schwarze 2811: }
2812:
1.102 schwarze 2813: /*
2814: * Handle in-line equation delimiters.
2815: */
2816: static enum rofferr
1.110 schwarze 2817: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2818: {
1.105 schwarze 2819: char *cp1, *cp2;
2820: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2821:
1.102 schwarze 2822: /*
2823: * Outside equations, look for an opening delimiter.
2824: * If we are inside an equation, we already know it is
2825: * in-line, or this function wouldn't have been called;
2826: * so look for a closing delimiter.
2827: */
2828:
1.110 schwarze 2829: cp1 = buf->buf + pos;
1.102 schwarze 2830: cp2 = strchr(cp1, r->eqn == NULL ?
2831: r->last_eqn->odelim : r->last_eqn->cdelim);
2832: if (cp2 == NULL)
1.149 schwarze 2833: return ROFF_CONT;
1.102 schwarze 2834:
1.105 schwarze 2835: *cp2++ = '\0';
2836: bef_pr = bef_nl = aft_nl = aft_pr = "";
2837:
2838: /* Handle preceding text, protecting whitespace. */
2839:
1.110 schwarze 2840: if (*buf->buf != '\0') {
1.105 schwarze 2841: if (r->eqn == NULL)
2842: bef_pr = "\\&";
2843: bef_nl = "\n";
2844: }
2845:
2846: /*
2847: * Prepare replacing the delimiter with an equation macro
2848: * and drop leading white space from the equation.
2849: */
1.102 schwarze 2850:
1.105 schwarze 2851: if (r->eqn == NULL) {
2852: while (*cp2 == ' ')
2853: cp2++;
2854: mac = ".EQ";
2855: } else
2856: mac = ".EN";
2857:
2858: /* Handle following text, protecting whitespace. */
2859:
2860: if (*cp2 != '\0') {
2861: aft_nl = "\n";
2862: if (r->eqn != NULL)
2863: aft_pr = "\\&";
2864: }
2865:
2866: /* Do the actual replacement. */
2867:
1.110 schwarze 2868: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2869: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2870: free(buf->buf);
2871: buf->buf = cp1;
1.102 schwarze 2872:
2873: /* Toggle the in-line state of the eqn subsystem. */
2874:
2875: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2876: return ROFF_REPARSE;
1.41 schwarze 2877: }
2878:
1.107 schwarze 2879: static enum rofferr
2880: roff_EQ(ROFF_ARGS)
1.32 schwarze 2881: {
1.191 schwarze 2882: struct roff_node *n;
2883:
1.194 schwarze 2884: if (r->man->macroset == MACROSET_MAN)
2885: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 2886: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
2887: if (ln > r->man->last->line)
2888: n->flags |= NODE_LINE;
2889: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
2890: n->eqn->expectargs = UINT_MAX;
2891: roff_node_append(r->man, n);
2892: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 2893:
1.110 schwarze 2894: assert(r->eqn == NULL);
1.191 schwarze 2895: if (r->last_eqn == NULL)
2896: r->last_eqn = eqn_alloc(r->parse);
2897: else
2898: eqn_reset(r->last_eqn);
2899: r->eqn = r->last_eqn;
2900: r->eqn->node = n;
1.41 schwarze 2901:
1.110 schwarze 2902: if (buf->buf[pos] != '\0')
1.107 schwarze 2903: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2904: ".EQ %s", buf->buf + pos);
1.41 schwarze 2905:
1.149 schwarze 2906: return ROFF_IGN;
1.32 schwarze 2907: }
2908:
2909: static enum rofferr
2910: roff_EN(ROFF_ARGS)
2911: {
1.191 schwarze 2912: if (r->eqn != NULL) {
2913: eqn_parse(r->eqn);
2914: r->eqn = NULL;
2915: } else
2916: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
2917: if (buf->buf[pos] != '\0')
2918: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2919: "EN %s", buf->buf + pos);
1.149 schwarze 2920: return ROFF_IGN;
1.32 schwarze 2921: }
2922:
2923: static enum rofferr
1.27 schwarze 2924: roff_TS(ROFF_ARGS)
2925: {
1.193 schwarze 2926: if (r->tbl != NULL) {
1.94 schwarze 2927: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2928: ln, ppos, "TS breaks TS");
1.193 schwarze 2929: tbl_end(r->tbl);
1.27 schwarze 2930: }
1.193 schwarze 2931: r->tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2932: if (r->last_tbl)
1.193 schwarze 2933: r->last_tbl->next = r->tbl;
1.27 schwarze 2934: else
1.193 schwarze 2935: r->first_tbl = r->tbl;
2936: r->last_tbl = r->tbl;
1.169 schwarze 2937: return ROFF_IGN;
2938: }
2939:
2940: static enum rofferr
2941: roff_onearg(ROFF_ARGS)
2942: {
2943: struct roff_node *n;
2944: char *cp;
1.177 schwarze 2945: int npos;
1.169 schwarze 2946:
1.174 schwarze 2947: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 2948: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
2949: tok == ROFF_ti))
1.174 schwarze 2950: man_breakscope(r->man, tok);
2951:
1.181 schwarze 2952: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 2953: r->man->last = roffce_node;
2954: r->man->next = ROFF_NEXT_SIBLING;
2955: }
2956:
1.169 schwarze 2957: roff_elem_alloc(r->man, ln, ppos, tok);
2958: n = r->man->last;
2959:
2960: cp = buf->buf + pos;
2961: if (*cp != '\0') {
2962: while (*cp != '\0' && *cp != ' ')
2963: cp++;
2964: while (*cp == ' ')
2965: *cp++ = '\0';
2966: if (*cp != '\0')
2967: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2968: r->parse, ln, cp - buf->buf,
2969: "%s ... %s", roff_name[tok], cp);
2970: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 2971: }
2972:
1.181 schwarze 2973: if (tok == ROFF_ce || tok == ROFF_rj) {
2974: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 2975: roff_word_alloc(r->man, ln, pos, "1");
2976: r->man->last->flags |= NODE_NOSRC;
2977: }
2978: npos = 0;
2979: if (roff_evalnum(r, ln, r->man->last->string, &npos,
2980: &roffce_lines, 0) == 0) {
2981: mandoc_vmsg(MANDOCERR_CE_NONUM,
2982: r->parse, ln, pos, "ce %s", buf->buf + pos);
2983: roffce_lines = 1;
2984: }
2985: if (roffce_lines < 1) {
2986: r->man->last = r->man->last->parent;
2987: roffce_node = NULL;
2988: roffce_lines = 0;
2989: } else
2990: roffce_node = r->man->last->parent;
2991: } else {
2992: n->flags |= NODE_VALID | NODE_ENDED;
2993: r->man->last = n;
2994: }
2995: n->flags |= NODE_LINE;
1.172 schwarze 2996: r->man->next = ROFF_NEXT_SIBLING;
2997: return ROFF_IGN;
2998: }
2999:
3000: static enum rofferr
3001: roff_manyarg(ROFF_ARGS)
3002: {
3003: struct roff_node *n;
3004: char *sp, *ep;
3005:
3006: roff_elem_alloc(r->man, ln, ppos, tok);
3007: n = r->man->last;
3008:
3009: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3010: while (*ep != '\0' && *ep != ' ')
3011: ep++;
3012: while (*ep == ' ')
3013: *ep++ = '\0';
3014: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3015: }
3016:
3017: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3018: r->man->last = n;
3019: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3020: return ROFF_IGN;
1.123 schwarze 3021: }
3022:
3023: static enum rofferr
1.183 schwarze 3024: roff_als(ROFF_ARGS)
3025: {
3026: char *oldn, *newn, *end, *value;
3027: size_t oldsz, newsz, valsz;
3028:
3029: newn = oldn = buf->buf + pos;
3030: if (*newn == '\0')
3031: return ROFF_IGN;
3032:
3033: newsz = roff_getname(r, &oldn, ln, pos);
3034: if (newn[newsz] == '\\' || *oldn == '\0')
3035: return ROFF_IGN;
3036:
3037: end = oldn;
3038: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3039: if (oldsz == 0)
3040: return ROFF_IGN;
3041:
1.187 schwarze 3042: valsz = mandoc_asprintf(&value, ".%.*s \\$*\\\"\n",
3043: (int)oldsz, oldn);
1.183 schwarze 3044: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3045: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3046: free(value);
3047: return ROFF_IGN;
3048: }
3049:
3050: static enum rofferr
1.168 schwarze 3051: roff_br(ROFF_ARGS)
1.123 schwarze 3052: {
1.174 schwarze 3053: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3054: man_breakscope(r->man, ROFF_br);
1.168 schwarze 3055: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3056: if (buf->buf[pos] != '\0')
3057: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3058: "%s %s", roff_name[tok], buf->buf + pos);
3059: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3060: r->man->next = ROFF_NEXT_SIBLING;
3061: return ROFF_IGN;
1.27 schwarze 3062: }
3063:
3064: static enum rofferr
1.48 schwarze 3065: roff_cc(ROFF_ARGS)
3066: {
3067: const char *p;
3068:
1.110 schwarze 3069: p = buf->buf + pos;
1.48 schwarze 3070:
1.110 schwarze 3071: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3072: r->control = '\0';
1.48 schwarze 3073:
1.110 schwarze 3074: if (*p != '\0')
1.132 schwarze 3075: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3076: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3077:
1.149 schwarze 3078: return ROFF_IGN;
1.48 schwarze 3079: }
3080:
3081: static enum rofferr
1.175 schwarze 3082: roff_ec(ROFF_ARGS)
3083: {
3084: const char *p;
3085:
3086: p = buf->buf + pos;
3087: if (*p == '\0')
3088: r->escape = '\\';
3089: else {
3090: r->escape = *p;
3091: if (*++p != '\0')
3092: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3093: ln, p - buf->buf, "ec ... %s", p);
3094: }
3095: return ROFF_IGN;
3096: }
3097:
3098: static enum rofferr
3099: roff_eo(ROFF_ARGS)
3100: {
3101: r->escape = '\0';
3102: if (buf->buf[pos] != '\0')
3103: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3104: ln, pos, "eo %s", buf->buf + pos);
3105: return ROFF_IGN;
3106: }
3107:
3108: static enum rofferr
1.42 schwarze 3109: roff_tr(ROFF_ARGS)
3110: {
3111: const char *p, *first, *second;
3112: size_t fsz, ssz;
3113: enum mandoc_esc esc;
3114:
1.110 schwarze 3115: p = buf->buf + pos;
1.42 schwarze 3116:
1.110 schwarze 3117: if (*p == '\0') {
1.132 schwarze 3118: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 3119: return ROFF_IGN;
1.42 schwarze 3120: }
3121:
1.110 schwarze 3122: while (*p != '\0') {
1.42 schwarze 3123: fsz = ssz = 1;
3124:
3125: first = p++;
1.110 schwarze 3126: if (*first == '\\') {
1.42 schwarze 3127: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3128: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3129: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3130: ln, (int)(p - buf->buf), first);
1.149 schwarze 3131: return ROFF_IGN;
1.42 schwarze 3132: }
3133: fsz = (size_t)(p - first);
3134: }
3135:
3136: second = p++;
1.110 schwarze 3137: if (*second == '\\') {
1.42 schwarze 3138: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3139: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3140: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3141: ln, (int)(p - buf->buf), second);
1.149 schwarze 3142: return ROFF_IGN;
1.42 schwarze 3143: }
3144: ssz = (size_t)(p - second);
1.110 schwarze 3145: } else if (*second == '\0') {
1.132 schwarze 3146: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3147: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3148: second = " ";
3149: p--;
3150: }
3151:
3152: if (fsz > 1) {
1.80 schwarze 3153: roff_setstrn(&r->xmbtab, first, fsz,
3154: second, ssz, 0);
1.42 schwarze 3155: continue;
3156: }
3157:
1.110 schwarze 3158: if (r->xtab == NULL)
1.80 schwarze 3159: r->xtab = mandoc_calloc(128,
3160: sizeof(struct roffstr));
1.42 schwarze 3161:
3162: free(r->xtab[(int)*first].p);
3163: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3164: r->xtab[(int)*first].sz = ssz;
3165: }
3166:
1.149 schwarze 3167: return ROFF_IGN;
1.42 schwarze 3168: }
3169:
3170: static enum rofferr
1.178 schwarze 3171: roff_rn(ROFF_ARGS)
3172: {
3173: const char *value;
3174: char *oldn, *newn, *end;
3175: size_t oldsz, newsz;
1.187 schwarze 3176: int deftype;
1.178 schwarze 3177:
3178: oldn = newn = buf->buf + pos;
3179: if (*oldn == '\0')
3180: return ROFF_IGN;
3181:
3182: oldsz = roff_getname(r, &newn, ln, pos);
3183: if (oldn[oldsz] == '\\' || *newn == '\0')
3184: return ROFF_IGN;
3185:
3186: end = newn;
3187: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3188: if (newsz == 0)
3189: return ROFF_IGN;
3190:
1.187 schwarze 3191: deftype = ROFFDEF_ANY;
3192: value = roff_getstrn(r, oldn, oldsz, &deftype);
3193: switch (deftype) {
3194: case ROFFDEF_USER:
1.178 schwarze 3195: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3196: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3197: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3198: break;
3199: case ROFFDEF_PRE:
3200: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3201: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3202: break;
3203: case ROFFDEF_REN:
1.178 schwarze 3204: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3205: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3206: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3207: break;
3208: case ROFFDEF_STD:
1.178 schwarze 3209: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3210: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3211: break;
3212: default:
3213: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3214: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3215: break;
3216: }
1.178 schwarze 3217: return ROFF_IGN;
3218: }
3219:
3220: static enum rofferr
1.14 schwarze 3221: roff_so(ROFF_ARGS)
3222: {
1.121 schwarze 3223: char *name, *cp;
1.15 schwarze 3224:
1.110 schwarze 3225: name = buf->buf + pos;
1.97 schwarze 3226: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3227:
1.22 schwarze 3228: /*
3229: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3230: * opening anything that's not in our cwd or anything beneath
3231: * it. Thus, explicitly disallow traversing up the file-system
3232: * or using absolute paths.
3233: */
3234:
1.110 schwarze 3235: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3236: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3237: ".so %s", name);
1.121 schwarze 3238: buf->sz = mandoc_asprintf(&cp,
3239: ".sp\nSee the file %s.\n.sp", name) + 1;
3240: free(buf->buf);
3241: buf->buf = cp;
3242: *offs = 0;
1.149 schwarze 3243: return ROFF_REPARSE;
1.14 schwarze 3244: }
3245:
3246: *offs = pos;
1.149 schwarze 3247: return ROFF_SO;
1.7 schwarze 3248: }
3249:
1.138 schwarze 3250: /* --- user defined strings and macros ------------------------------------ */
3251:
1.16 schwarze 3252: static enum rofferr
3253: roff_userdef(ROFF_ARGS)
1.12 schwarze 3254: {
1.183 schwarze 3255: const char *arg[16], *ap;
1.16 schwarze 3256: char *cp, *n1, *n2;
1.164 schwarze 3257: int expand_count, i, ib, ie;
1.135 schwarze 3258: size_t asz, rsz;
1.12 schwarze 3259:
1.16 schwarze 3260: /*
3261: * Collect pointers to macro argument strings
1.61 schwarze 3262: * and NUL-terminate them.
1.16 schwarze 3263: */
1.135 schwarze 3264:
1.145 schwarze 3265: r->argc = 0;
1.110 schwarze 3266: cp = buf->buf + pos;
1.183 schwarze 3267: for (i = 0; i < 16; i++) {
1.145 schwarze 3268: if (*cp == '\0')
3269: arg[i] = "";
3270: else {
3271: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3272: r->argc = i + 1;
3273: }
3274: }
1.16 schwarze 3275:
3276: /*
3277: * Expand macro arguments.
1.12 schwarze 3278: */
1.135 schwarze 3279:
3280: buf->sz = strlen(r->current_string) + 1;
1.164 schwarze 3281: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.135 schwarze 3282: memcpy(n1, r->current_string, buf->sz);
1.164 schwarze 3283: expand_count = 0;
1.135 schwarze 3284: while (*cp != '\0') {
3285:
3286: /* Scan ahead for the next argument invocation. */
3287:
3288: if (*cp++ != '\\')
3289: continue;
3290: if (*cp++ != '$')
3291: continue;
1.146 schwarze 3292: if (*cp == '*') { /* \\$* inserts all arguments */
3293: ib = 0;
3294: ie = r->argc - 1;
3295: } else { /* \\$1 .. \\$9 insert one argument */
3296: ib = ie = *cp - '1';
3297: if (ib < 0 || ib > 8)
3298: continue;
3299: }
1.135 schwarze 3300: cp -= 2;
1.164 schwarze 3301:
3302: /*
3303: * Prevent infinite recursion.
3304: */
3305:
3306: if (cp >= n2)
3307: expand_count = 1;
3308: else if (++expand_count > EXPAND_LIMIT) {
3309: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3310: ln, (int)(cp - n1), NULL);
1.165 schwarze 3311: free(buf->buf);
3312: buf->buf = n1;
1.164 schwarze 3313: return ROFF_IGN;
3314: }
1.135 schwarze 3315:
3316: /*
3317: * Determine the size of the expanded argument,
3318: * taking escaping of quotes into account.
3319: */
3320:
1.146 schwarze 3321: asz = ie > ib ? ie - ib : 0; /* for blanks */
3322: for (i = ib; i <= ie; i++) {
3323: for (ap = arg[i]; *ap != '\0'; ap++) {
3324: asz++;
3325: if (*ap == '"')
3326: asz += 3;
3327: }
1.135 schwarze 3328: }
3329: if (asz != 3) {
3330:
3331: /*
3332: * Determine the size of the rest of the
3333: * unexpanded macro, including the NUL.
3334: */
3335:
3336: rsz = buf->sz - (cp - n1) - 3;
3337:
3338: /*
3339: * When shrinking, move before
3340: * releasing the storage.
3341: */
3342:
3343: if (asz < 3)
3344: memmove(cp + asz, cp + 3, rsz);
3345:
3346: /*
3347: * Resize the storage for the macro
3348: * and readjust the parse pointer.
3349: */
3350:
3351: buf->sz += asz - 3;
3352: n2 = mandoc_realloc(n1, buf->sz);
3353: cp = n2 + (cp - n1);
3354: n1 = n2;
3355:
3356: /*
3357: * When growing, make room
3358: * for the expanded argument.
3359: */
3360:
3361: if (asz > 3)
3362: memmove(cp + asz, cp + 3, rsz);
3363: }
3364:
3365: /* Copy the expanded argument, escaping quotes. */
3366:
3367: n2 = cp;
1.146 schwarze 3368: for (i = ib; i <= ie; i++) {
3369: for (ap = arg[i]; *ap != '\0'; ap++) {
3370: if (*ap == '"') {
3371: memcpy(n2, "\\(dq", 4);
3372: n2 += 4;
3373: } else
3374: *n2++ = *ap;
3375: }
3376: if (i < ie)
3377: *n2++ = ' ';
1.16 schwarze 3378: }
1.12 schwarze 3379: }
3380:
1.16 schwarze 3381: /*
3382: * Replace the macro invocation
3383: * by the expanded macro.
3384: */
1.135 schwarze 3385:
1.110 schwarze 3386: free(buf->buf);
3387: buf->buf = n1;
1.120 schwarze 3388: *offs = 0;
1.16 schwarze 3389:
1.149 schwarze 3390: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3391: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3392: }
1.28 schwarze 3393:
1.178 schwarze 3394: /*
3395: * Calling a high-level macro that was renamed with .rn.
3396: * r->current_string has already been set up by roff_parse().
3397: */
3398: static enum rofferr
3399: roff_renamed(ROFF_ARGS)
3400: {
3401: char *nbuf;
3402:
1.187 schwarze 3403: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3404: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3405: free(buf->buf);
3406: buf->buf = nbuf;
3407: return ROFF_CONT;
3408: }
3409:
1.85 schwarze 3410: static size_t
1.28 schwarze 3411: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3412: {
3413: char *name, *cp;
1.85 schwarze 3414: size_t namesz;
1.28 schwarze 3415:
3416: name = *cpp;
3417: if ('\0' == *name)
1.149 schwarze 3418: return 0;
1.28 schwarze 3419:
1.85 schwarze 3420: /* Read until end of name and terminate it with NUL. */
3421: for (cp = name; 1; cp++) {
3422: if ('\0' == *cp || ' ' == *cp) {
3423: namesz = cp - name;
3424: break;
3425: }
1.28 schwarze 3426: if ('\\' != *cp)
3427: continue;
1.88 schwarze 3428: namesz = cp - name;
3429: if ('{' == cp[1] || '}' == cp[1])
3430: break;
1.28 schwarze 3431: cp++;
3432: if ('\\' == *cp)
3433: continue;
1.97 schwarze 3434: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3435: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3436: mandoc_escape((const char **)&cp, NULL, NULL);
3437: break;
1.28 schwarze 3438: }
3439:
3440: /* Read past spaces. */
3441: while (' ' == *cp)
3442: cp++;
3443:
3444: *cpp = cp;
1.149 schwarze 3445: return namesz;
1.28 schwarze 3446: }
3447:
1.16 schwarze 3448: /*
3449: * Store *string into the user-defined string called *name.
3450: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3451: * append == 0: replace mode
3452: * append == 1: single-line append mode
3453: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3454: */
1.8 schwarze 3455: static void
1.16 schwarze 3456: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3457: int append)
1.7 schwarze 3458: {
1.187 schwarze 3459: size_t namesz;
1.42 schwarze 3460:
1.187 schwarze 3461: namesz = strlen(name);
3462: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3463: string ? strlen(string) : 0, append);
1.187 schwarze 3464: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3465: }
3466:
3467: static void
3468: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3469: const char *string, size_t stringsz, int append)
1.42 schwarze 3470: {
3471: struct roffkv *n;
3472: char *c;
3473: int i;
3474: size_t oldch, newch;
1.7 schwarze 3475:
1.16 schwarze 3476: /* Search for an existing string with the same name. */
1.42 schwarze 3477: n = *r;
3478:
1.84 schwarze 3479: while (n && (namesz != n->key.sz ||
3480: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3481: n = n->next;
1.8 schwarze 3482:
3483: if (NULL == n) {
1.16 schwarze 3484: /* Create a new string table entry. */
1.42 schwarze 3485: n = mandoc_malloc(sizeof(struct roffkv));
3486: n->key.p = mandoc_strndup(name, namesz);
3487: n->key.sz = namesz;
3488: n->val.p = NULL;
3489: n->val.sz = 0;
3490: n->next = *r;
3491: *r = n;
1.66 schwarze 3492: } else if (0 == append) {
1.42 schwarze 3493: free(n->val.p);
3494: n->val.p = NULL;
3495: n->val.sz = 0;
1.16 schwarze 3496: }
3497:
3498: if (NULL == string)
3499: return;
3500:
3501: /*
3502: * One additional byte for the '\n' in multiline mode,
3503: * and one for the terminating '\0'.
3504: */
1.66 schwarze 3505: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3506:
3507: if (NULL == n->val.p) {
3508: n->val.p = mandoc_malloc(newch);
3509: *n->val.p = '\0';
1.16 schwarze 3510: oldch = 0;
3511: } else {
1.42 schwarze 3512: oldch = n->val.sz;
3513: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3514: }
3515:
3516: /* Skip existing content in the destination buffer. */
1.42 schwarze 3517: c = n->val.p + (int)oldch;
1.16 schwarze 3518:
3519: /* Append new content to the destination buffer. */
1.42 schwarze 3520: i = 0;
3521: while (i < (int)stringsz) {
1.16 schwarze 3522: /*
3523: * Rudimentary roff copy mode:
3524: * Handle escaped backslashes.
3525: */
1.42 schwarze 3526: if ('\\' == string[i] && '\\' == string[i + 1])
3527: i++;
3528: *c++ = string[i++];
1.16 schwarze 3529: }
1.8 schwarze 3530:
1.16 schwarze 3531: /* Append terminating bytes. */
1.66 schwarze 3532: if (1 < append)
1.16 schwarze 3533: *c++ = '\n';
1.42 schwarze 3534:
1.16 schwarze 3535: *c = '\0';
1.42 schwarze 3536: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3537: }
3538:
1.8 schwarze 3539: static const char *
1.197 schwarze 3540: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 3541: int *deftype)
1.7 schwarze 3542: {
1.187 schwarze 3543: const struct roffkv *n;
1.197 schwarze 3544: int found, i;
1.187 schwarze 3545: enum roff_tok tok;
3546:
1.197 schwarze 3547: found = 0;
3548: for (n = r->strtab; n != NULL; n = n->next) {
3549: if (strncmp(name, n->key.p, len) != 0 ||
3550: n->key.p[len] != '\0' || n->val.p == NULL)
3551: continue;
3552: if (*deftype & ROFFDEF_USER) {
3553: *deftype = ROFFDEF_USER;
3554: return n->val.p;
3555: } else {
3556: found = 1;
3557: break;
3558: }
3559: }
3560: for (n = r->rentab; n != NULL; n = n->next) {
3561: if (strncmp(name, n->key.p, len) != 0 ||
3562: n->key.p[len] != '\0' || n->val.p == NULL)
3563: continue;
3564: if (*deftype & ROFFDEF_REN) {
3565: *deftype = ROFFDEF_REN;
3566: return n->val.p;
3567: } else {
3568: found = 1;
3569: break;
1.187 schwarze 3570: }
3571: }
1.197 schwarze 3572: for (i = 0; i < PREDEFS_MAX; i++) {
3573: if (strncmp(name, predefs[i].name, len) != 0 ||
3574: predefs[i].name[len] != '\0')
3575: continue;
3576: if (*deftype & ROFFDEF_PRE) {
3577: *deftype = ROFFDEF_PRE;
3578: return predefs[i].str;
3579: } else {
3580: found = 1;
3581: break;
1.187 schwarze 3582: }
3583: }
1.197 schwarze 3584: if (r->man->macroset != MACROSET_MAN) {
3585: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3586: if (strncmp(name, roff_name[tok], len) != 0 ||
3587: roff_name[tok][len] != '\0')
3588: continue;
3589: if (*deftype & ROFFDEF_STD) {
3590: *deftype = ROFFDEF_STD;
3591: return NULL;
3592: } else {
3593: found = 1;
3594: break;
1.187 schwarze 3595: }
3596: }
3597: }
1.197 schwarze 3598: if (r->man->macroset != MACROSET_MDOC) {
3599: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3600: if (strncmp(name, roff_name[tok], len) != 0 ||
3601: roff_name[tok][len] != '\0')
3602: continue;
3603: if (*deftype & ROFFDEF_STD) {
3604: *deftype = ROFFDEF_STD;
3605: return NULL;
3606: } else {
3607: found = 1;
3608: break;
1.187 schwarze 3609: }
3610: }
1.197 schwarze 3611: }
3612:
3613: if (found == 0 && *deftype != ROFFDEF_ANY) {
3614: if (*deftype & ROFFDEF_REN) {
3615: /*
3616: * This might still be a request,
3617: * so do not treat it as undefined yet.
3618: */
3619: *deftype = ROFFDEF_UNDEF;
3620: return NULL;
1.187 schwarze 3621: }
1.197 schwarze 3622:
3623: /* Using an undefined string defines it to be empty. */
3624:
3625: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3626: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 3627: }
1.197 schwarze 3628:
1.187 schwarze 3629: *deftype = 0;
1.149 schwarze 3630: return NULL;
1.7 schwarze 3631: }
3632:
1.8 schwarze 3633: static void
1.42 schwarze 3634: roff_freestr(struct roffkv *r)
1.7 schwarze 3635: {
1.42 schwarze 3636: struct roffkv *n, *nn;
1.7 schwarze 3637:
1.42 schwarze 3638: for (n = r; n; n = nn) {
3639: free(n->key.p);
3640: free(n->val.p);
1.7 schwarze 3641: nn = n->next;
3642: free(n);
3643: }
1.27 schwarze 3644: }
1.138 schwarze 3645:
3646: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 3647:
3648: /*
3649: * Duplicate an input string, making the appropriate character
3650: * conversations (as stipulated by `tr') along the way.
3651: * Returns a heap-allocated string with all the replacements made.
3652: */
3653: char *
3654: roff_strdup(const struct roff *r, const char *p)
3655: {
3656: const struct roffkv *cp;
3657: char *res;
3658: const char *pp;
3659: size_t ssz, sz;
3660: enum mandoc_esc esc;
3661:
3662: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3663: return mandoc_strdup(p);
1.42 schwarze 3664: else if ('\0' == *p)
1.149 schwarze 3665: return mandoc_strdup("");
1.42 schwarze 3666:
3667: /*
3668: * Step through each character looking for term matches
3669: * (remember that a `tr' can be invoked with an escape, which is
3670: * a glyph but the escape is multi-character).
3671: * We only do this if the character hash has been initialised
3672: * and the string is >0 length.
3673: */
3674:
3675: res = NULL;
3676: ssz = 0;
3677:
3678: while ('\0' != *p) {
1.161 schwarze 3679: assert((unsigned int)*p < 128);
3680: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3681: sz = r->xtab[(int)*p].sz;
3682: res = mandoc_realloc(res, ssz + sz + 1);
3683: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3684: ssz += sz;
3685: p++;
3686: continue;
3687: } else if ('\\' != *p) {
3688: res = mandoc_realloc(res, ssz + 2);
3689: res[ssz++] = *p++;
3690: continue;
3691: }
3692:
3693: /* Search for term matches. */
3694: for (cp = r->xmbtab; cp; cp = cp->next)
3695: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3696: break;
3697:
3698: if (NULL != cp) {
3699: /*
3700: * A match has been found.
3701: * Append the match to the array and move
3702: * forward by its keysize.
3703: */
1.80 schwarze 3704: res = mandoc_realloc(res,
3705: ssz + cp->val.sz + 1);
1.42 schwarze 3706: memcpy(res + ssz, cp->val.p, cp->val.sz);
3707: ssz += cp->val.sz;
3708: p += (int)cp->key.sz;
3709: continue;
3710: }
3711:
3712: /*
3713: * Handle escapes carefully: we need to copy
3714: * over just the escape itself, or else we might
3715: * do replacements within the escape itself.
3716: * Make sure to pass along the bogus string.
3717: */
3718: pp = p++;
3719: esc = mandoc_escape(&p, NULL, NULL);
3720: if (ESCAPE_ERROR == esc) {
3721: sz = strlen(pp);
3722: res = mandoc_realloc(res, ssz + sz + 1);
3723: memcpy(res + ssz, pp, sz);
3724: break;
3725: }
1.80 schwarze 3726: /*
3727: * We bail out on bad escapes.
1.42 schwarze 3728: * No need to warn: we already did so when
3729: * roff_res() was called.
3730: */
3731: sz = (int)(p - pp);
3732: res = mandoc_realloc(res, ssz + sz + 1);
3733: memcpy(res + ssz, pp, sz);
3734: ssz += sz;
3735: }
3736:
3737: res[(int)ssz] = '\0';
1.149 schwarze 3738: return res;
1.99 schwarze 3739: }
3740:
3741: int
3742: roff_getformat(const struct roff *r)
3743: {
3744:
1.149 schwarze 3745: return r->format;
1.48 schwarze 3746: }
3747:
3748: /*
1.80 schwarze 3749: * Find out whether a line is a macro line or not.
1.48 schwarze 3750: * If it is, adjust the current position and return one; if it isn't,
3751: * return zero and don't change the current position.
3752: * If the control character has been set with `.cc', then let that grain
3753: * precedence.
3754: * This is slighly contrary to groff, where using the non-breaking
3755: * control character when `cc' has been invoked will cause the
3756: * non-breaking macro contents to be printed verbatim.
3757: */
3758: int
3759: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3760: {
3761: int pos;
3762:
3763: pos = *ppos;
3764:
1.175 schwarze 3765: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 3766: pos++;
1.175 schwarze 3767: else if (r->control != '\0')
1.149 schwarze 3768: return 0;
1.48 schwarze 3769: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3770: pos += 2;
3771: else if ('.' == cp[pos] || '\'' == cp[pos])
3772: pos++;
3773: else
1.149 schwarze 3774: return 0;
1.48 schwarze 3775:
3776: while (' ' == cp[pos] || '\t' == cp[pos])
3777: pos++;
3778:
3779: *ppos = pos;
1.149 schwarze 3780: return 1;
1.1 schwarze 3781: }
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