Annotation of src/usr.bin/mandoc/roff.c, Revision 1.211
1.211 ! schwarze 1: /* $OpenBSD: roff.c,v 1.210 2018/08/21 18:15:16 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;
1.199 schwarze 74: int step;
1.52 schwarze 75: struct roffreg *next;
76: };
77:
1.167 schwarze 78: /*
79: * Association of request and macro names with token IDs.
80: */
81: struct roffreq {
82: enum roff_tok tok;
83: char name[];
84: };
85:
1.211 ! schwarze 86: /*
! 87: * A macro processing context.
! 88: * More than one is needed when macro calls are nested.
! 89: */
! 90: struct mctx {
! 91: char **argv;
! 92: int argc;
! 93: int argsz;
! 94: };
! 95:
1.1 schwarze 96: struct roff {
1.35 schwarze 97: struct mparse *parse; /* parse point */
1.168 schwarze 98: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 99: struct roffnode *last; /* leaf of stack */
1.211 ! schwarze 100: struct mctx *mstack; /* stack of macro contexts */
1.96 schwarze 101: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 102: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 103: struct roffreg *regtab; /* number registers */
1.42 schwarze 104: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 105: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 106: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
107: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 108: const char *current_string; /* value of last called user macro */
1.27 schwarze 109: struct tbl_node *first_tbl; /* first table parsed */
110: struct tbl_node *last_tbl; /* last table parsed */
111: struct tbl_node *tbl; /* current table being parsed */
1.191 schwarze 112: struct eqn_node *last_eqn; /* equation parser */
113: struct eqn_node *eqn; /* active equation parser */
1.102 schwarze 114: int eqn_inline; /* current equation is inline */
1.96 schwarze 115: int options; /* parse options */
1.211 ! schwarze 116: int mstacksz; /* current size of mstack */
! 117: int mstackpos; /* position in mstack */
1.96 schwarze 118: int rstacksz; /* current size limit of rstack */
119: int rstackpos; /* position in rstack */
1.99 schwarze 120: int format; /* current file in mdoc or man format */
1.96 schwarze 121: char control; /* control character */
1.175 schwarze 122: char escape; /* escape character */
1.1 schwarze 123: };
124:
125: struct roffnode {
1.166 schwarze 126: enum roff_tok tok; /* type of node */
1.1 schwarze 127: struct roffnode *parent; /* up one in stack */
128: int line; /* parse line */
129: int col; /* parse col */
1.16 schwarze 130: char *name; /* node name, e.g. macro name */
1.2 schwarze 131: char *end; /* end-rules: custom token */
132: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 133: int rule; /* current evaluation rule */
1.1 schwarze 134: };
135:
136: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 137: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 138: struct buf *buf, /* input buffer */ \
1.1 schwarze 139: int ln, /* parse line */ \
1.2 schwarze 140: int ppos, /* original pos in buffer */ \
141: int pos, /* current pos in buffer */ \
142: int *offs /* reset offset of buffer data */
1.1 schwarze 143:
144: typedef enum rofferr (*roffproc)(ROFF_ARGS);
145:
146: struct roffmac {
1.2 schwarze 147: roffproc proc; /* process new macro */
148: roffproc text; /* process as child text of macro */
149: roffproc sub; /* process as child of macro */
150: int flags;
151: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 152: };
153:
1.37 schwarze 154: struct predef {
155: const char *name; /* predefined input name */
156: const char *str; /* replacement symbol */
157: };
158:
159: #define PREDEF(__name, __str) \
160: { (__name), (__str) },
161:
1.138 schwarze 162: /* --- function prototypes ------------------------------------------------ */
163:
1.42 schwarze 164: static void roffnode_cleanscope(struct roff *);
165: static void roffnode_pop(struct roff *);
1.166 schwarze 166: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 167: const char *, int, int);
1.193 schwarze 168: static void roff_addtbl(struct roff_man *, struct tbl_node *);
1.183 schwarze 169: static enum rofferr roff_als(ROFF_ARGS);
1.2 schwarze 170: static enum rofferr roff_block(ROFF_ARGS);
171: static enum rofferr roff_block_text(ROFF_ARGS);
172: static enum rofferr roff_block_sub(ROFF_ARGS);
1.168 schwarze 173: static enum rofferr roff_br(ROFF_ARGS);
1.2 schwarze 174: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 175: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 176: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 177: static enum rofferr roff_cond(ROFF_ARGS);
178: static enum rofferr roff_cond_text(ROFF_ARGS);
179: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 180: static enum rofferr roff_ds(ROFF_ARGS);
1.175 schwarze 181: static enum rofferr roff_ec(ROFF_ARGS);
182: static enum rofferr roff_eo(ROFF_ARGS);
1.110 schwarze 183: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 184: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 185: static int roff_evalnum(struct roff *, int,
186: const char *, int *, int *, int);
187: static int roff_evalpar(struct roff *, int,
1.133 schwarze 188: const char *, int *, int *, int);
1.71 schwarze 189: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 190: static void roff_free1(struct roff *);
1.52 schwarze 191: static void roff_freereg(struct roffreg *);
1.42 schwarze 192: static void roff_freestr(struct roffkv *);
1.85 schwarze 193: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 194: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 195: static int roff_getop(const char *, int *, char *);
1.199 schwarze 196: static int roff_getregn(struct roff *,
197: const char *, size_t, char);
1.145 schwarze 198: static int roff_getregro(const struct roff *,
199: const char *name);
1.197 schwarze 200: static const char *roff_getstrn(struct roff *,
1.187 schwarze 201: const char *, size_t, int *);
1.143 schwarze 202: static int roff_hasregn(const struct roff *,
203: const char *, size_t);
1.123 schwarze 204: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 205: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 206: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 207: static void roff_man_alloc1(struct roff_man *);
208: static void roff_man_free1(struct roff_man *);
1.172 schwarze 209: static enum rofferr roff_manyarg(ROFF_ARGS);
1.202 schwarze 210: static enum rofferr roff_nop(ROFF_ARGS);
1.6 schwarze 211: static enum rofferr roff_nr(ROFF_ARGS);
1.169 schwarze 212: static enum rofferr roff_onearg(ROFF_ARGS);
1.166 schwarze 213: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 214: int, int);
1.177 schwarze 215: static enum rofferr roff_parsetext(struct roff *, struct buf *,
216: int, int *);
1.178 schwarze 217: static enum rofferr roff_renamed(ROFF_ARGS);
1.110 schwarze 218: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.211 ! schwarze 219: static enum rofferr roff_return(ROFF_ARGS);
1.29 schwarze 220: static enum rofferr roff_rm(ROFF_ARGS);
1.178 schwarze 221: static enum rofferr roff_rn(ROFF_ARGS);
1.76 schwarze 222: static enum rofferr roff_rr(ROFF_ARGS);
1.198 schwarze 223: static void roff_setregn(struct roff *, const char *,
1.199 schwarze 224: size_t, int, char, int);
1.8 schwarze 225: static void roff_setstr(struct roff *,
1.16 schwarze 226: const char *, const char *, int);
1.80 schwarze 227: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 228: size_t, const char *, size_t, int);
1.211 ! schwarze 229: static enum rofferr roff_shift(ROFF_ARGS);
1.14 schwarze 230: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 231: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 232: static enum rofferr roff_Dd(ROFF_ARGS);
1.27 schwarze 233: static enum rofferr roff_TE(ROFF_ARGS);
234: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 235: static enum rofferr roff_EQ(ROFF_ARGS);
236: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 237: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 238: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 239: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 240:
1.138 schwarze 241: /* --- constant data ------------------------------------------------------ */
242:
1.133 schwarze 243: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
244: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
245:
1.166 schwarze 246: const char *__roff_name[MAN_MAX + 1] = {
1.177 schwarze 247: "br", "ce", "ft", "ll",
1.184 schwarze 248: "mc", "po", "rj", "sp",
249: "ta", "ti", NULL,
1.166 schwarze 250: "ab", "ad", "af", "aln",
251: "als", "am", "am1", "ami",
252: "ami1", "as", "as1", "asciify",
253: "backtrace", "bd", "bleedat", "blm",
254: "box", "boxa", "bp", "BP",
255: "break", "breakchar", "brnl", "brp",
1.177 schwarze 256: "brpnl", "c2", "cc",
1.166 schwarze 257: "cf", "cflags", "ch", "char",
258: "chop", "class", "close", "CL",
259: "color", "composite", "continue", "cp",
260: "cropat", "cs", "cu", "da",
261: "dch", "Dd", "de", "de1",
262: "defcolor", "dei", "dei1", "device",
263: "devicem", "di", "do", "ds",
264: "ds1", "dwh", "dt", "ec",
265: "ecr", "ecs", "el", "em",
266: "EN", "eo", "EP", "EQ",
267: "errprint", "ev", "evc", "ex",
268: "fallback", "fam", "fc", "fchar",
269: "fcolor", "fdeferlig", "feature", "fkern",
270: "fl", "flig", "fp", "fps",
271: "fschar", "fspacewidth", "fspecial", "ftr",
272: "fzoom", "gcolor", "hc", "hcode",
273: "hidechar", "hla", "hlm", "hpf",
274: "hpfa", "hpfcode", "hw", "hy",
275: "hylang", "hylen", "hym", "hypp",
276: "hys", "ie", "if", "ig",
277: "index", "it", "itc", "IX",
278: "kern", "kernafter", "kernbefore", "kernpair",
279: "lc", "lc_ctype", "lds", "length",
280: "letadj", "lf", "lg", "lhang",
281: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 282: "ls", "lsm", "lt",
1.166 schwarze 283: "mediasize", "minss", "mk", "mso",
284: "na", "ne", "nh", "nhychar",
285: "nm", "nn", "nop", "nr",
286: "nrf", "nroff", "ns", "nx",
287: "open", "opena", "os", "output",
288: "padj", "papersize", "pc", "pev",
289: "pi", "PI", "pl", "pm",
1.184 schwarze 290: "pn", "pnr", "ps",
1.166 schwarze 291: "psbb", "pshape", "pso", "ptr",
292: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 293: "return", "rfschar", "rhang",
1.166 schwarze 294: "rm", "rn", "rnn", "rr",
295: "rs", "rt", "schar", "sentchar",
296: "shc", "shift", "sizes", "so",
297: "spacewidth", "special", "spreadwarn", "ss",
298: "sty", "substring", "sv", "sy",
1.172 schwarze 299: "T&", "tc", "TE",
1.173 schwarze 300: "TH", "tkf", "tl",
1.166 schwarze 301: "tm", "tm1", "tmc", "tr",
302: "track", "transchar", "trf", "trimat",
303: "trin", "trnt", "troff", "TS",
304: "uf", "ul", "unformat", "unwatch",
305: "unwatchn", "vpt", "vs", "warn",
306: "warnscale", "watch", "watchlength", "watchn",
307: "wh", "while", "write", "writec",
308: "writem", "xflag", ".", NULL,
1.178 schwarze 309: NULL, "text",
1.166 schwarze 310: "Dd", "Dt", "Os", "Sh",
311: "Ss", "Pp", "D1", "Dl",
312: "Bd", "Ed", "Bl", "El",
313: "It", "Ad", "An", "Ap",
314: "Ar", "Cd", "Cm", "Dv",
315: "Er", "Ev", "Ex", "Fa",
316: "Fd", "Fl", "Fn", "Ft",
317: "Ic", "In", "Li", "Nd",
318: "Nm", "Op", "Ot", "Pa",
319: "Rv", "St", "Va", "Vt",
320: "Xr", "%A", "%B", "%D",
321: "%I", "%J", "%N", "%O",
322: "%P", "%R", "%T", "%V",
323: "Ac", "Ao", "Aq", "At",
324: "Bc", "Bf", "Bo", "Bq",
325: "Bsx", "Bx", "Db", "Dc",
326: "Do", "Dq", "Ec", "Ef",
327: "Em", "Eo", "Fx", "Ms",
328: "No", "Ns", "Nx", "Ox",
329: "Pc", "Pf", "Po", "Pq",
330: "Qc", "Ql", "Qo", "Qq",
331: "Re", "Rs", "Sc", "So",
332: "Sq", "Sm", "Sx", "Sy",
333: "Tn", "Ux", "Xc", "Xo",
334: "Fo", "Fc", "Oo", "Oc",
335: "Bk", "Ek", "Bt", "Hf",
336: "Fr", "Ud", "Lb", "Lp",
337: "Lk", "Mt", "Brq", "Bro",
338: "Brc", "%C", "Es", "En",
1.171 schwarze 339: "Dx", "%Q", "%U", "Ta",
340: NULL,
1.166 schwarze 341: "TH", "SH", "SS", "TP",
1.204 schwarze 342: "TQ",
1.166 schwarze 343: "LP", "PP", "P", "IP",
344: "HP", "SM", "SB", "BI",
345: "IB", "BR", "RB", "R",
346: "B", "I", "IR", "RI",
1.171 schwarze 347: "nf", "fi",
1.166 schwarze 348: "RE", "RS", "DT", "UC",
1.169 schwarze 349: "PD", "AT", "in",
1.205 schwarze 350: "SY", "YS", "OP",
351: "EX", "EE", "UR",
1.189 bentley 352: "UE", "MT", "ME", NULL
1.166 schwarze 353: };
354: const char *const *roff_name = __roff_name;
355:
356: static struct roffmac roffs[TOKEN_NONE] = {
1.168 schwarze 357: { roff_br, NULL, NULL, 0 }, /* br */
1.177 schwarze 358: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.169 schwarze 359: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 360: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 361: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.184 schwarze 362: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 363: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 364: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 365: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 366: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 367: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 368: { roff_unsupp, NULL, NULL, 0 }, /* ab */
369: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
370: { roff_line_ignore, NULL, NULL, 0 }, /* af */
371: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 372: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 373: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
374: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
375: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
376: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
377: { roff_ds, NULL, NULL, 0 }, /* as */
378: { roff_ds, NULL, NULL, 0 }, /* as1 */
379: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
380: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
381: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
382: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
383: { roff_unsupp, NULL, NULL, 0 }, /* blm */
384: { roff_unsupp, NULL, NULL, 0 }, /* box */
385: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
386: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
387: { roff_unsupp, NULL, NULL, 0 }, /* BP */
388: { roff_unsupp, NULL, NULL, 0 }, /* break */
389: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
390: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 schwarze 391: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 392: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
393: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
394: { roff_cc, NULL, NULL, 0 }, /* cc */
395: { roff_insec, NULL, NULL, 0 }, /* cf */
396: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
397: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
398: { roff_unsupp, NULL, NULL, 0 }, /* char */
399: { roff_unsupp, NULL, NULL, 0 }, /* chop */
400: { roff_line_ignore, NULL, NULL, 0 }, /* class */
401: { roff_insec, NULL, NULL, 0 }, /* close */
402: { roff_unsupp, NULL, NULL, 0 }, /* CL */
403: { roff_line_ignore, NULL, NULL, 0 }, /* color */
404: { roff_unsupp, NULL, NULL, 0 }, /* composite */
405: { roff_unsupp, NULL, NULL, 0 }, /* continue */
406: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
407: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
408: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
409: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
410: { roff_unsupp, NULL, NULL, 0 }, /* da */
411: { roff_unsupp, NULL, NULL, 0 }, /* dch */
412: { roff_Dd, NULL, NULL, 0 }, /* Dd */
413: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
414: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
415: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
416: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
417: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
418: { roff_unsupp, NULL, NULL, 0 }, /* device */
419: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
420: { roff_unsupp, NULL, NULL, 0 }, /* di */
421: { roff_unsupp, NULL, NULL, 0 }, /* do */
422: { roff_ds, NULL, NULL, 0 }, /* ds */
423: { roff_ds, NULL, NULL, 0 }, /* ds1 */
424: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
425: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 426: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 427: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
428: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
429: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
430: { roff_unsupp, NULL, NULL, 0 }, /* em */
431: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 432: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 433: { roff_unsupp, NULL, NULL, 0 }, /* EP */
434: { roff_EQ, NULL, NULL, 0 }, /* EQ */
435: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
436: { roff_unsupp, NULL, NULL, 0 }, /* ev */
437: { roff_unsupp, NULL, NULL, 0 }, /* evc */
438: { roff_unsupp, NULL, NULL, 0 }, /* ex */
439: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
440: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
441: { roff_unsupp, NULL, NULL, 0 }, /* fc */
442: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
443: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
444: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
445: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
446: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
447: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
448: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
449: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
450: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
451: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
452: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
453: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
454: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
455: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
456: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
457: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
458: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
459: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
460: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
461: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
462: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
463: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
464: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
465: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
466: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
467: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
468: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
469: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
470: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
471: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
472: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
473: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
474: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
475: { roff_unsupp, NULL, NULL, 0 }, /* index */
476: { roff_it, NULL, NULL, 0 }, /* it */
477: { roff_unsupp, NULL, NULL, 0 }, /* itc */
478: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
479: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
480: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
481: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
482: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
483: { roff_unsupp, NULL, NULL, 0 }, /* lc */
484: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
485: { roff_unsupp, NULL, NULL, 0 }, /* lds */
486: { roff_unsupp, NULL, NULL, 0 }, /* length */
487: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
488: { roff_insec, NULL, NULL, 0 }, /* lf */
489: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
490: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
491: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
492: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
493: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
494: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
495: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
496: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
497: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
498: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
499: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
500: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
501: { roff_insec, NULL, NULL, 0 }, /* mso */
502: { roff_line_ignore, NULL, NULL, 0 }, /* na */
503: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
504: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
505: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
506: { roff_unsupp, NULL, NULL, 0 }, /* nm */
507: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.202 schwarze 508: { roff_nop, NULL, NULL, 0 }, /* nop */
1.167 schwarze 509: { roff_nr, NULL, NULL, 0 }, /* nr */
510: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
511: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
512: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
513: { roff_insec, NULL, NULL, 0 }, /* nx */
514: { roff_insec, NULL, NULL, 0 }, /* open */
515: { roff_insec, NULL, NULL, 0 }, /* opena */
516: { roff_line_ignore, NULL, NULL, 0 }, /* os */
517: { roff_unsupp, NULL, NULL, 0 }, /* output */
518: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
519: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
520: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
521: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
522: { roff_insec, NULL, NULL, 0 }, /* pi */
523: { roff_unsupp, NULL, NULL, 0 }, /* PI */
524: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
525: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
526: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
527: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
528: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
529: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
530: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
531: { roff_insec, NULL, NULL, 0 }, /* pso */
532: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
533: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
534: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
535: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
536: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.211 ! schwarze 537: { roff_return, NULL, NULL, 0 }, /* return */
1.167 schwarze 538: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
539: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
540: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 541: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 542: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
543: { roff_rr, NULL, NULL, 0 }, /* rr */
544: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
545: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
546: { roff_unsupp, NULL, NULL, 0 }, /* schar */
547: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
548: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.211 ! schwarze 549: { roff_shift, NULL, NULL, 0 }, /* shift */
1.167 schwarze 550: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
551: { roff_so, NULL, NULL, 0 }, /* so */
552: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
553: { roff_line_ignore, NULL, NULL, 0 }, /* special */
554: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
555: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
556: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
557: { roff_unsupp, NULL, NULL, 0 }, /* substring */
558: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
559: { roff_insec, NULL, NULL, 0 }, /* sy */
560: { roff_T_, NULL, NULL, 0 }, /* T& */
561: { roff_unsupp, NULL, NULL, 0 }, /* tc */
562: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 563: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 564: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
565: { roff_unsupp, NULL, NULL, 0 }, /* tl */
566: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
567: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
568: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
569: { roff_tr, NULL, NULL, 0 }, /* tr */
570: { roff_line_ignore, NULL, NULL, 0 }, /* track */
571: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
572: { roff_insec, NULL, NULL, 0 }, /* trf */
573: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
574: { roff_unsupp, NULL, NULL, 0 }, /* trin */
575: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
576: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
577: { roff_TS, NULL, NULL, 0 }, /* TS */
578: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
579: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
580: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
581: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
582: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
583: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
584: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
585: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
586: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
587: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
588: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
589: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
590: { roff_unsupp, NULL, NULL, 0 }, /* wh */
591: { roff_unsupp, NULL, NULL, 0 }, /* while */
592: { roff_insec, NULL, NULL, 0 }, /* write */
593: { roff_insec, NULL, NULL, 0 }, /* writec */
594: { roff_insec, NULL, NULL, 0 }, /* writem */
595: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
596: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 597: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 598: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 599: };
600:
1.37 schwarze 601: /* Array of injected predefined strings. */
602: #define PREDEFS_MAX 38
603: static const struct predef predefs[PREDEFS_MAX] = {
604: #include "predefs.in"
605: };
606:
1.177 schwarze 607: static int roffce_lines; /* number of input lines to center */
608: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 609: static int roffit_lines; /* number of lines to delay */
610: static char *roffit_macro; /* nil-terminated macro line */
611:
1.80 schwarze 612:
1.138 schwarze 613: /* --- request table ------------------------------------------------------ */
614:
1.167 schwarze 615: struct ohash *
616: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 617: {
1.167 schwarze 618: struct ohash *htab;
619: struct roffreq *req;
620: enum roff_tok tok;
621: size_t sz;
622: unsigned int slot;
1.3 schwarze 623:
1.167 schwarze 624: htab = mandoc_malloc(sizeof(*htab));
625: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 626:
1.167 schwarze 627: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 628: if (roff_name[tok] == NULL)
629: continue;
1.167 schwarze 630: sz = strlen(roff_name[tok]);
631: req = mandoc_malloc(sizeof(*req) + sz + 1);
632: req->tok = tok;
633: memcpy(req->name, roff_name[tok], sz + 1);
634: slot = ohash_qlookup(htab, req->name);
635: ohash_insert(htab, slot, req);
1.3 schwarze 636: }
1.167 schwarze 637: return htab;
1.3 schwarze 638: }
639:
1.167 schwarze 640: void
641: roffhash_free(struct ohash *htab)
1.1 schwarze 642: {
1.167 schwarze 643: struct roffreq *req;
644: unsigned int slot;
1.1 schwarze 645:
1.167 schwarze 646: if (htab == NULL)
647: return;
648: for (req = ohash_first(htab, &slot); req != NULL;
649: req = ohash_next(htab, &slot))
650: free(req);
651: ohash_delete(htab);
652: free(htab);
653: }
654:
655: enum roff_tok
656: roffhash_find(struct ohash *htab, const char *name, size_t sz)
657: {
658: struct roffreq *req;
659: const char *end;
660:
661: if (sz) {
662: end = name + sz;
663: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
664: } else
665: req = ohash_find(htab, ohash_qlookup(htab, name));
666: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 667: }
668:
1.138 schwarze 669: /* --- stack of request blocks -------------------------------------------- */
670:
1.1 schwarze 671: /*
672: * Pop the current node off of the stack of roff instructions currently
673: * pending.
674: */
675: static void
676: roffnode_pop(struct roff *r)
677: {
678: struct roffnode *p;
679:
1.2 schwarze 680: assert(r->last);
1.80 schwarze 681: p = r->last;
1.2 schwarze 682:
683: r->last = r->last->parent;
1.16 schwarze 684: free(p->name);
685: free(p->end);
1.1 schwarze 686: free(p);
687: }
688:
689: /*
690: * Push a roff node onto the instruction stack. This must later be
691: * removed with roffnode_pop().
692: */
1.11 schwarze 693: static void
1.166 schwarze 694: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 695: int line, int col)
1.1 schwarze 696: {
697: struct roffnode *p;
698:
1.11 schwarze 699: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 700: p->tok = tok;
1.16 schwarze 701: if (name)
702: p->name = mandoc_strdup(name);
1.1 schwarze 703: p->parent = r->last;
704: p->line = line;
705: p->col = col;
1.71 schwarze 706: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 707:
708: r->last = p;
709: }
710:
1.138 schwarze 711: /* --- roff parser state data management ---------------------------------- */
712:
1.1 schwarze 713: static void
714: roff_free1(struct roff *r)
715: {
1.49 schwarze 716: struct tbl_node *tbl;
1.42 schwarze 717: int i;
1.27 schwarze 718:
1.49 schwarze 719: while (NULL != (tbl = r->first_tbl)) {
720: r->first_tbl = tbl->next;
721: tbl_free(tbl);
1.27 schwarze 722: }
723: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 724:
1.191 schwarze 725: if (r->last_eqn != NULL)
726: eqn_free(r->last_eqn);
727: r->last_eqn = r->eqn = NULL;
1.32 schwarze 728:
1.211 ! schwarze 729: while (r->mstackpos >= 0)
! 730: roff_userret(r);
! 731:
1.1 schwarze 732: while (r->last)
733: roffnode_pop(r);
1.27 schwarze 734:
1.96 schwarze 735: free (r->rstack);
736: r->rstack = NULL;
737: r->rstacksz = 0;
738: r->rstackpos = -1;
739:
740: roff_freereg(r->regtab);
741: r->regtab = NULL;
742:
1.42 schwarze 743: roff_freestr(r->strtab);
1.178 schwarze 744: roff_freestr(r->rentab);
1.42 schwarze 745: roff_freestr(r->xmbtab);
1.178 schwarze 746: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 747:
748: if (r->xtab)
749: for (i = 0; i < 128; i++)
750: free(r->xtab[i].p);
751: free(r->xtab);
752: r->xtab = NULL;
1.1 schwarze 753: }
754:
755: void
756: roff_reset(struct roff *r)
757: {
758: roff_free1(r);
1.99 schwarze 759: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 760: r->control = '\0';
761: r->escape = '\\';
1.179 schwarze 762: roffce_lines = 0;
763: roffce_node = NULL;
764: roffit_lines = 0;
765: roffit_macro = NULL;
1.1 schwarze 766: }
767:
768: void
769: roff_free(struct roff *r)
770: {
1.211 ! schwarze 771: int i;
! 772:
1.1 schwarze 773: roff_free1(r);
1.211 ! schwarze 774: for (i = 0; i < r->mstacksz; i++)
! 775: free(r->mstack[i].argv);
! 776: free(r->mstack);
1.167 schwarze 777: roffhash_free(r->reqtab);
1.1 schwarze 778: free(r);
779: }
780:
781: struct roff *
1.151 schwarze 782: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 783: {
784: struct roff *r;
785:
1.11 schwarze 786: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 787: r->parse = parse;
1.200 schwarze 788: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.72 schwarze 789: r->options = options;
1.99 schwarze 790: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.211 ! schwarze 791: r->mstackpos = -1;
1.2 schwarze 792: r->rstackpos = -1;
1.175 schwarze 793: r->escape = '\\';
1.149 schwarze 794: return r;
1.137 schwarze 795: }
796:
1.138 schwarze 797: /* --- syntax tree state data management ---------------------------------- */
798:
1.137 schwarze 799: static void
800: roff_man_free1(struct roff_man *man)
801: {
802:
1.138 schwarze 803: if (man->first != NULL)
804: roff_node_delete(man, man->first);
1.137 schwarze 805: free(man->meta.msec);
806: free(man->meta.vol);
807: free(man->meta.os);
808: free(man->meta.arch);
809: free(man->meta.title);
810: free(man->meta.name);
811: free(man->meta.date);
812: }
813:
814: static void
815: roff_man_alloc1(struct roff_man *man)
816: {
817:
818: memset(&man->meta, 0, sizeof(man->meta));
819: man->first = mandoc_calloc(1, sizeof(*man->first));
820: man->first->type = ROFFT_ROOT;
821: man->last = man->first;
822: man->last_es = NULL;
823: man->flags = 0;
824: man->macroset = MACROSET_NONE;
825: man->lastsec = man->lastnamed = SEC_NONE;
826: man->next = ROFF_NEXT_CHILD;
827: }
828:
829: void
830: roff_man_reset(struct roff_man *man)
831: {
832:
833: roff_man_free1(man);
834: roff_man_alloc1(man);
835: }
836:
837: void
838: roff_man_free(struct roff_man *man)
839: {
840:
841: roff_man_free1(man);
842: free(man);
843: }
844:
845: struct roff_man *
846: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.188 schwarze 847: const char *os_s, int quick)
1.137 schwarze 848: {
849: struct roff_man *man;
850:
851: man = mandoc_calloc(1, sizeof(*man));
852: man->parse = parse;
853: man->roff = roff;
1.188 schwarze 854: man->os_s = os_s;
1.137 schwarze 855: man->quick = quick;
856: roff_man_alloc1(man);
1.168 schwarze 857: roff->man = man;
1.149 schwarze 858: return man;
1.1 schwarze 859: }
860:
1.138 schwarze 861: /* --- syntax tree handling ----------------------------------------------- */
862:
863: struct roff_node *
864: roff_node_alloc(struct roff_man *man, int line, int pos,
865: enum roff_type type, int tok)
866: {
867: struct roff_node *n;
868:
869: n = mandoc_calloc(1, sizeof(*n));
870: n->line = line;
871: n->pos = pos;
872: n->tok = tok;
873: n->type = type;
874: n->sec = man->lastsec;
875:
876: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 877: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 878: else
1.157 schwarze 879: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 880: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 881: n->flags |= NODE_LINE;
1.138 schwarze 882: man->flags &= ~MDOC_NEWLINE;
883:
1.149 schwarze 884: return n;
1.138 schwarze 885: }
886:
887: void
888: roff_node_append(struct roff_man *man, struct roff_node *n)
889: {
890:
891: switch (man->next) {
892: case ROFF_NEXT_SIBLING:
1.153 schwarze 893: if (man->last->next != NULL) {
894: n->next = man->last->next;
895: man->last->next->prev = n;
896: } else
897: man->last->parent->last = n;
1.138 schwarze 898: man->last->next = n;
899: n->prev = man->last;
900: n->parent = man->last->parent;
901: break;
902: case ROFF_NEXT_CHILD:
1.159 schwarze 903: if (man->last->child != NULL) {
904: n->next = man->last->child;
905: man->last->child->prev = n;
906: } else
907: man->last->last = n;
1.138 schwarze 908: man->last->child = n;
909: n->parent = man->last;
910: break;
911: default:
912: abort();
913: }
1.154 schwarze 914: man->last = n;
1.138 schwarze 915:
916: switch (n->type) {
917: case ROFFT_HEAD:
918: n->parent->head = n;
919: break;
920: case ROFFT_BODY:
1.154 schwarze 921: if (n->end != ENDBODY_NOT)
922: return;
1.138 schwarze 923: n->parent->body = n;
924: break;
925: case ROFFT_TAIL:
926: n->parent->tail = n;
927: break;
928: default:
1.154 schwarze 929: return;
1.138 schwarze 930: }
1.154 schwarze 931:
932: /*
933: * Copy over the normalised-data pointer of our parent. Not
934: * everybody has one, but copying a null pointer is fine.
935: */
936:
937: n->norm = n->parent->norm;
938: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 939: }
940:
1.139 schwarze 941: void
942: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
943: {
944: struct roff_node *n;
945:
946: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
947: n->string = roff_strdup(man->roff, word);
948: roff_node_append(man, n);
1.158 schwarze 949: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 950: man->next = ROFF_NEXT_SIBLING;
951: }
952:
953: void
954: roff_word_append(struct roff_man *man, const char *word)
955: {
956: struct roff_node *n;
957: char *addstr, *newstr;
958:
959: n = man->last;
960: addstr = roff_strdup(man->roff, word);
961: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
962: free(addstr);
963: free(n->string);
964: n->string = newstr;
965: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 966: }
967:
968: void
969: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
970: {
971: struct roff_node *n;
972:
973: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
974: roff_node_append(man, n);
975: man->next = ROFF_NEXT_CHILD;
976: }
977:
978: struct roff_node *
979: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
980: {
981: struct roff_node *n;
982:
983: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
984: roff_node_append(man, n);
985: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 986: return n;
1.139 schwarze 987: }
988:
1.138 schwarze 989: struct roff_node *
990: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
991: {
992: struct roff_node *n;
993:
994: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
995: roff_node_append(man, n);
996: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 997: return n;
1.138 schwarze 998: }
999:
1000: struct roff_node *
1001: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1002: {
1003: struct roff_node *n;
1004:
1005: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1006: roff_node_append(man, n);
1007: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1008: return n;
1.139 schwarze 1009: }
1010:
1.193 schwarze 1011: static void
1012: roff_addtbl(struct roff_man *man, struct tbl_node *tbl)
1.139 schwarze 1013: {
1014: struct roff_node *n;
1.193 schwarze 1015: const struct tbl_span *span;
1.139 schwarze 1016:
1017: if (man->macroset == MACROSET_MAN)
1.174 schwarze 1018: man_breakscope(man, ROFF_TS);
1.193 schwarze 1019: while ((span = tbl_span(tbl)) != NULL) {
1020: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1021: n->span = span;
1022: roff_node_append(man, n);
1023: n->flags |= NODE_VALID | NODE_ENDED;
1024: man->next = ROFF_NEXT_SIBLING;
1025: }
1.138 schwarze 1026: }
1027:
1028: void
1029: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1030: {
1031:
1032: /* Adjust siblings. */
1033:
1034: if (n->prev)
1035: n->prev->next = n->next;
1036: if (n->next)
1037: n->next->prev = n->prev;
1038:
1039: /* Adjust parent. */
1040:
1041: if (n->parent != NULL) {
1042: if (n->parent->child == n)
1043: n->parent->child = n->next;
1044: if (n->parent->last == n)
1045: n->parent->last = n->prev;
1046: }
1047:
1048: /* Adjust parse point. */
1049:
1050: if (man == NULL)
1051: return;
1052: if (man->last == n) {
1053: if (n->prev == NULL) {
1054: man->last = n->parent;
1055: man->next = ROFF_NEXT_CHILD;
1056: } else {
1057: man->last = n->prev;
1058: man->next = ROFF_NEXT_SIBLING;
1059: }
1060: }
1061: if (man->first == n)
1062: man->first = NULL;
1063: }
1064:
1065: void
1066: roff_node_free(struct roff_node *n)
1067: {
1068:
1069: if (n->args != NULL)
1070: mdoc_argv_free(n->args);
1071: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1072: free(n->norm);
1.191 schwarze 1073: if (n->eqn != NULL)
1074: eqn_box_free(n->eqn);
1.138 schwarze 1075: free(n->string);
1076: free(n);
1077: }
1078:
1079: void
1080: roff_node_delete(struct roff_man *man, struct roff_node *n)
1081: {
1082:
1083: while (n->child != NULL)
1084: roff_node_delete(man, n->child);
1085: roff_node_unlink(man, n);
1086: roff_node_free(n);
1.141 schwarze 1087: }
1088:
1089: void
1090: deroff(char **dest, const struct roff_node *n)
1091: {
1092: char *cp;
1093: size_t sz;
1094:
1095: if (n->type != ROFFT_TEXT) {
1096: for (n = n->child; n != NULL; n = n->next)
1097: deroff(dest, n);
1098: return;
1099: }
1100:
1.160 schwarze 1101: /* Skip leading whitespace. */
1.141 schwarze 1102:
1.160 schwarze 1103: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1104: if (cp[0] == '\\' && cp[1] != '\0' &&
1105: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1106: cp++;
1.160 schwarze 1107: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1108: break;
1109: }
1110:
1.161 schwarze 1111: /* Skip trailing backslash. */
1112:
1113: sz = strlen(cp);
1.162 schwarze 1114: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1115: sz--;
1116:
1.141 schwarze 1117: /* Skip trailing whitespace. */
1118:
1.161 schwarze 1119: for (; sz; sz--)
1.141 schwarze 1120: if ( ! isspace((unsigned char)cp[sz-1]))
1121: break;
1122:
1123: /* Skip empty strings. */
1124:
1125: if (sz == 0)
1126: return;
1127:
1128: if (*dest == NULL) {
1129: *dest = mandoc_strndup(cp, sz);
1130: return;
1131: }
1132:
1133: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1134: free(*dest);
1135: *dest = cp;
1.138 schwarze 1136: }
1137:
1138: /* --- main functions of the roff parser ---------------------------------- */
1139:
1.8 schwarze 1140: /*
1.79 schwarze 1141: * In the current line, expand escape sequences that tend to get
1142: * used in numerical expressions and conditional requests.
1143: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1144: */
1.45 schwarze 1145: static enum rofferr
1.110 schwarze 1146: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1147: {
1.211 ! schwarze 1148: struct mctx *ctx; /* current macro call context */
1.81 schwarze 1149: char ubuf[24]; /* buffer to print the number */
1.200 schwarze 1150: struct roff_node *n; /* used for header comments */
1.78 schwarze 1151: const char *start; /* start of the string to process */
1.82 schwarze 1152: char *stesc; /* start of an escape sequence ('\\') */
1.200 schwarze 1153: char *ep; /* end of comment string */
1.23 schwarze 1154: const char *stnam; /* start of the name, after "[(*" */
1155: const char *cp; /* end of the name, e.g. before ']' */
1156: const char *res; /* the string to be substituted */
1.110 schwarze 1157: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1158: size_t maxl; /* expected length of the escape name */
1159: size_t naml; /* actual length of the escape name */
1.211 ! schwarze 1160: size_t asz; /* length of the replacement */
! 1161: size_t rsz; /* length of the rest of the string */
1.109 schwarze 1162: enum mandoc_esc esc; /* type of the escape sequence */
1163: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1164: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1165: int npos; /* position in numeric expression */
1.91 schwarze 1166: int arg_complete; /* argument not interrupted by eol */
1.211 ! schwarze 1167: int quote_args; /* true for \\$@, false for \\$* */
1.175 schwarze 1168: int done; /* no more input available */
1.187 schwarze 1169: int deftype; /* type of definition to paste */
1.195 schwarze 1170: int rcsid; /* kind of RCS id seen */
1.199 schwarze 1171: char sign; /* increment number register */
1.79 schwarze 1172: char term; /* character terminating the escape */
1.8 schwarze 1173:
1.175 schwarze 1174: /* Search forward for comments. */
1175:
1176: done = 0;
1177: start = buf->buf + pos;
1178: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1179: if (stesc[0] != r->escape || stesc[1] == '\0')
1180: continue;
1181: stesc++;
1182: if (*stesc != '"' && *stesc != '#')
1183: continue;
1.185 schwarze 1184:
1185: /* Comment found, look for RCS id. */
1186:
1.195 schwarze 1187: rcsid = 0;
1.185 schwarze 1188: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.195 schwarze 1189: rcsid = 1 << MANDOC_OS_OPENBSD;
1.185 schwarze 1190: cp += 8;
1191: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.195 schwarze 1192: rcsid = 1 << MANDOC_OS_NETBSD;
1.185 schwarze 1193: cp += 7;
1194: }
1195: if (cp != NULL &&
1196: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1197: strchr(cp, '$') != NULL) {
1.195 schwarze 1198: if (r->man->meta.rcsids & rcsid)
1.186 schwarze 1199: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1200: ln, stesc + 1 - buf->buf, stesc + 1);
1.195 schwarze 1201: r->man->meta.rcsids |= rcsid;
1.186 schwarze 1202: }
1.185 schwarze 1203:
1204: /* Handle trailing whitespace. */
1205:
1.200 schwarze 1206: ep = strchr(stesc--, '\0') - 1;
1207: if (*ep == '\n') {
1.175 schwarze 1208: done = 1;
1.200 schwarze 1209: ep--;
1.175 schwarze 1210: }
1.200 schwarze 1211: if (*ep == ' ' || *ep == '\t')
1.175 schwarze 1212: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1.200 schwarze 1213: ln, ep - buf->buf, NULL);
1214:
1215: /*
1216: * Save comments preceding the title macro
1217: * in the syntax tree.
1218: */
1219:
1220: if (r->format == 0) {
1221: while (*ep == ' ' || *ep == '\t')
1222: ep--;
1223: ep[1] = '\0';
1224: n = roff_node_alloc(r->man,
1225: ln, stesc + 1 - buf->buf,
1226: ROFFT_COMMENT, TOKEN_NONE);
1227: n->string = mandoc_strdup(stesc + 2);
1228: roff_node_append(r->man, n);
1229: n->flags |= NODE_VALID | NODE_ENDED;
1230: r->man->next = ROFF_NEXT_SIBLING;
1231: }
1232:
1.206 schwarze 1233: /* Line continuation with comment. */
1234:
1235: if (stesc[1] == '#') {
1236: *stesc = '\0';
1237: return ROFF_APPEND;
1238: }
1239:
1240: /* Discard normal comments. */
1.200 schwarze 1241:
1.207 schwarze 1242: while (stesc > start && stesc[-1] == ' ' &&
1243: (stesc == start + 1 || stesc[-2] != '\\'))
1.175 schwarze 1244: stesc--;
1245: *stesc = '\0';
1246: break;
1247: }
1248: if (stesc == start)
1249: return ROFF_CONT;
1250: stesc--;
1251:
1252: /* Notice the end of the input. */
1253:
1254: if (*stesc == '\n') {
1255: *stesc-- = '\0';
1256: done = 1;
1257: }
1258:
1.43 schwarze 1259: expand_count = 0;
1.175 schwarze 1260: while (stesc >= start) {
1.43 schwarze 1261:
1.78 schwarze 1262: /* Search backwards for the next backslash. */
1263:
1.175 schwarze 1264: if (*stesc != r->escape) {
1265: if (*stesc == '\\') {
1266: *stesc = '\0';
1267: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1268: buf->buf, stesc + 1) + 1;
1269: start = nbuf + pos;
1270: stesc = nbuf + (stesc - buf->buf);
1271: free(buf->buf);
1272: buf->buf = nbuf;
1273: }
1274: stesc--;
1.78 schwarze 1275: continue;
1.175 schwarze 1276: }
1.78 schwarze 1277:
1278: /* If it is escaped, skip it. */
1279:
1280: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1281: if (*cp != r->escape)
1.78 schwarze 1282: break;
1283:
1.110 schwarze 1284: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1285: while (stesc > cp)
1286: *stesc-- = '\\';
1.78 schwarze 1287: continue;
1.175 schwarze 1288: } else if (stesc[1] != '\0') {
1289: *stesc = '\\';
1290: } else {
1291: *stesc-- = '\0';
1292: if (done)
1293: continue;
1294: else
1295: return ROFF_APPEND;
1.78 schwarze 1296: }
1.23 schwarze 1297:
1.79 schwarze 1298: /* Decide whether to expand or to check only. */
1.23 schwarze 1299:
1.79 schwarze 1300: term = '\0';
1.78 schwarze 1301: cp = stesc + 1;
1.53 schwarze 1302: switch (*cp) {
1.80 schwarze 1303: case '*':
1.211 ! schwarze 1304: case '$':
1.53 schwarze 1305: res = NULL;
1306: break;
1.80 schwarze 1307: case 'B':
1308: case 'w':
1.79 schwarze 1309: term = cp[1];
1310: /* FALLTHROUGH */
1.80 schwarze 1311: case 'n':
1.199 schwarze 1312: sign = cp[1];
1313: if (sign == '+' || sign == '-')
1314: cp++;
1.53 schwarze 1315: res = ubuf;
1316: break;
1317: default:
1.109 schwarze 1318: esc = mandoc_escape(&cp, &stnam, &inaml);
1319: if (esc == ESCAPE_ERROR ||
1320: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1321: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1322: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1323: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1324: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1325: stesc--;
1.78 schwarze 1326: continue;
1.42 schwarze 1327: }
1328:
1.78 schwarze 1329: if (EXPAND_LIMIT < ++expand_count) {
1330: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1331: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1332: return ROFF_IGN;
1.78 schwarze 1333: }
1.23 schwarze 1334:
1335: /*
1336: * The third character decides the length
1.53 schwarze 1337: * of the name of the string or register.
1.23 schwarze 1338: * Save a pointer to the name.
1339: */
1340:
1.110 schwarze 1341: if (term == '\0') {
1.79 schwarze 1342: switch (*++cp) {
1.80 schwarze 1343: case '\0':
1.79 schwarze 1344: maxl = 0;
1345: break;
1.80 schwarze 1346: case '(':
1.79 schwarze 1347: cp++;
1348: maxl = 2;
1349: break;
1.80 schwarze 1350: case '[':
1.79 schwarze 1351: cp++;
1352: term = ']';
1353: maxl = 0;
1354: break;
1355: default:
1356: maxl = 1;
1357: break;
1358: }
1359: } else {
1360: cp += 2;
1.8 schwarze 1361: maxl = 0;
1362: }
1.23 schwarze 1363: stnam = cp;
1.8 schwarze 1364:
1.23 schwarze 1365: /* Advance to the end of the name. */
1.8 schwarze 1366:
1.125 schwarze 1367: naml = 0;
1.91 schwarze 1368: arg_complete = 1;
1.125 schwarze 1369: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1370: if (*cp == '\0') {
1.92 schwarze 1371: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1372: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1373: arg_complete = 0;
1.79 schwarze 1374: break;
1.42 schwarze 1375: }
1.110 schwarze 1376: if (maxl == 0 && *cp == term) {
1.79 schwarze 1377: cp++;
1.125 schwarze 1378: break;
1379: }
1380: if (*cp++ != '\\' || stesc[1] != 'w') {
1381: naml++;
1382: continue;
1383: }
1384: switch (mandoc_escape(&cp, NULL, NULL)) {
1385: case ESCAPE_SPECIAL:
1386: case ESCAPE_UNICODE:
1387: case ESCAPE_NUMBERED:
1388: case ESCAPE_OVERSTRIKE:
1389: naml++;
1390: break;
1391: default:
1.8 schwarze 1392: break;
1.79 schwarze 1393: }
1.8 schwarze 1394: }
1395:
1.23 schwarze 1396: /*
1397: * Retrieve the replacement string; if it is
1398: * undefined, resume searching for escapes.
1399: */
1400:
1.79 schwarze 1401: switch (stesc[1]) {
1.80 schwarze 1402: case '*':
1.187 schwarze 1403: if (arg_complete) {
1404: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1405: res = roff_getstrn(r, stnam, naml, &deftype);
1.203 schwarze 1406:
1407: /*
1408: * If not overriden, let \*(.T
1409: * through to the formatters.
1410: */
1411:
1412: if (res == NULL && naml == 2 &&
1413: stnam[0] == '.' && stnam[1] == 'T') {
1414: roff_setstrn(&r->strtab,
1415: ".T", 2, NULL, 0, 0);
1416: stesc--;
1417: continue;
1418: }
1.187 schwarze 1419: }
1.79 schwarze 1420: break;
1.211 ! schwarze 1421: case '$':
! 1422: if (r->mstackpos < 0) {
! 1423: mandoc_vmsg(MANDOCERR_ARG_UNDEF,
! 1424: r->parse, ln, (int)(stesc - buf->buf),
! 1425: "%.3s", stesc);
! 1426: break;
! 1427: }
! 1428: ctx = r->mstack + r->mstackpos;
! 1429: npos = stesc[2] - '1';
! 1430: if (npos >= 0 && npos <= 8) {
! 1431: res = npos < ctx->argc ?
! 1432: ctx->argv[npos] : "";
! 1433: break;
! 1434: }
! 1435: if (stesc[2] == '*')
! 1436: quote_args = 0;
! 1437: else if (stesc[2] == '@')
! 1438: quote_args = 1;
! 1439: else {
! 1440: mandoc_vmsg(MANDOCERR_ARG_NONUM,
! 1441: r->parse, ln, (int)(stesc - buf->buf),
! 1442: "%.3s", stesc);
! 1443: break;
! 1444: }
! 1445: asz = 0;
! 1446: for (npos = 0; npos < ctx->argc; npos++) {
! 1447: if (npos)
! 1448: asz++; /* blank */
! 1449: if (quote_args)
! 1450: asz += 2; /* quotes */
! 1451: asz += strlen(ctx->argv[npos]);
! 1452: }
! 1453: if (asz != 3) {
! 1454: rsz = buf->sz - (stesc - buf->buf) - 3;
! 1455: if (asz < 3)
! 1456: memmove(stesc + asz, stesc + 3, rsz);
! 1457: buf->sz += asz - 3;
! 1458: nbuf = mandoc_realloc(buf->buf, buf->sz);
! 1459: start = nbuf + pos;
! 1460: stesc = nbuf + (stesc - buf->buf);
! 1461: buf->buf = nbuf;
! 1462: if (asz > 3)
! 1463: memmove(stesc + asz, stesc + 3, rsz);
! 1464: }
! 1465: for (npos = 0; npos < ctx->argc; npos++) {
! 1466: if (npos)
! 1467: *stesc++ = ' ';
! 1468: if (quote_args)
! 1469: *stesc++ = '"';
! 1470: cp = ctx->argv[npos];
! 1471: while (*cp != '\0')
! 1472: *stesc++ = *cp++;
! 1473: if (quote_args)
! 1474: *stesc++ = '"';
! 1475: }
! 1476: continue;
1.80 schwarze 1477: case 'B':
1.79 schwarze 1478: npos = 0;
1.91 schwarze 1479: ubuf[0] = arg_complete &&
1.133 schwarze 1480: roff_evalnum(r, ln, stnam, &npos,
1481: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1482: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1483: ubuf[1] = '\0';
1484: break;
1.80 schwarze 1485: case 'n':
1.91 schwarze 1486: if (arg_complete)
1487: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.199 schwarze 1488: roff_getregn(r, stnam, naml, sign));
1.91 schwarze 1489: else
1490: ubuf[0] = '\0';
1.79 schwarze 1491: break;
1.80 schwarze 1492: case 'w':
1.91 schwarze 1493: /* use even incomplete args */
1.81 schwarze 1494: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1495: 24 * (int)naml);
1496: break;
1497: }
1.8 schwarze 1498:
1.110 schwarze 1499: if (res == NULL) {
1.211 ! schwarze 1500: if (stesc[1] == '*')
! 1501: mandoc_vmsg(MANDOCERR_STR_UNDEF,
! 1502: r->parse, ln, (int)(stesc - buf->buf),
! 1503: "%.*s", (int)naml, stnam);
1.37 schwarze 1504: res = "";
1.118 schwarze 1505: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1506: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1507: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1508: return ROFF_IGN;
1.8 schwarze 1509: }
1510:
1.23 schwarze 1511: /* Replace the escape sequence by the string. */
1512:
1.82 schwarze 1513: *stesc = '\0';
1.110 schwarze 1514: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1515: buf->buf, res, cp) + 1;
1.8 schwarze 1516:
1.78 schwarze 1517: /* Prepare for the next replacement. */
1.8 schwarze 1518:
1.78 schwarze 1519: start = nbuf + pos;
1.110 schwarze 1520: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1521: free(buf->buf);
1522: buf->buf = nbuf;
1.42 schwarze 1523: }
1.149 schwarze 1524: return ROFF_CONT;
1.42 schwarze 1525: }
1526:
1527: /*
1.147 schwarze 1528: * Process text streams.
1.42 schwarze 1529: */
1530: static enum rofferr
1.177 schwarze 1531: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1532: {
1533: size_t sz;
1534: const char *start;
1.51 schwarze 1535: char *p;
1536: int isz;
1.42 schwarze 1537: enum mandoc_esc esc;
1538:
1.147 schwarze 1539: /* Spring the input line trap. */
1540:
1541: if (roffit_lines == 1) {
1542: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1543: free(buf->buf);
1544: buf->buf = p;
1545: buf->sz = isz + 1;
1546: *offs = 0;
1547: free(roffit_macro);
1548: roffit_lines = 0;
1.149 schwarze 1549: return ROFF_REPARSE;
1.147 schwarze 1550: } else if (roffit_lines > 1)
1551: --roffit_lines;
1552:
1.177 schwarze 1553: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1554: if (roffce_lines < 1) {
1555: r->man->last = roffce_node;
1556: r->man->next = ROFF_NEXT_SIBLING;
1557: roffce_lines = 0;
1558: roffce_node = NULL;
1559: } else
1560: roffce_lines--;
1561: }
1562:
1.147 schwarze 1563: /* Convert all breakable hyphens into ASCII_HYPH. */
1564:
1.110 schwarze 1565: start = p = buf->buf + pos;
1.42 schwarze 1566:
1.110 schwarze 1567: while (*p != '\0') {
1.42 schwarze 1568: sz = strcspn(p, "-\\");
1569: p += sz;
1570:
1.110 schwarze 1571: if (*p == '\0')
1.42 schwarze 1572: break;
1573:
1.110 schwarze 1574: if (*p == '\\') {
1.42 schwarze 1575: /* Skip over escapes. */
1576: p++;
1.62 schwarze 1577: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1578: if (esc == ESCAPE_ERROR)
1.42 schwarze 1579: break;
1.136 schwarze 1580: while (*p == '-')
1581: p++;
1.42 schwarze 1582: continue;
1583: } else if (p == start) {
1584: p++;
1585: continue;
1586: }
1587:
1.44 schwarze 1588: if (isalpha((unsigned char)p[-1]) &&
1589: isalpha((unsigned char)p[1]))
1.42 schwarze 1590: *p = ASCII_HYPH;
1591: p++;
1.8 schwarze 1592: }
1.149 schwarze 1593: return ROFF_CONT;
1.8 schwarze 1594: }
1595:
1.1 schwarze 1596: enum rofferr
1.110 schwarze 1597: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1598: {
1.166 schwarze 1599: enum roff_tok t;
1.27 schwarze 1600: enum rofferr e;
1.110 schwarze 1601: int pos; /* parse point */
1.115 schwarze 1602: int spos; /* saved parse point for messages */
1.110 schwarze 1603: int ppos; /* original offset in buf->buf */
1604: int ctl; /* macro line (boolean) */
1605:
1606: ppos = pos = *offs;
1.1 schwarze 1607:
1.102 schwarze 1608: /* Handle in-line equation delimiters. */
1609:
1.108 schwarze 1610: if (r->tbl == NULL &&
1611: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1612: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1613: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1614: if (e == ROFF_REPARSE)
1.149 schwarze 1615: return e;
1.102 schwarze 1616: assert(e == ROFF_CONT);
1617: }
1618:
1619: /* Expand some escape sequences. */
1.8 schwarze 1620:
1.110 schwarze 1621: e = roff_res(r, buf, ln, pos);
1.175 schwarze 1622: if (e == ROFF_IGN || e == ROFF_APPEND)
1.149 schwarze 1623: return e;
1.110 schwarze 1624: assert(e == ROFF_CONT);
1.8 schwarze 1625:
1.110 schwarze 1626: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1627:
1.8 schwarze 1628: /*
1.2 schwarze 1629: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1630: * text through the macro's filter.
1631: * Equations process all content themselves.
1632: * Tables process almost all content themselves, but we want
1633: * to warn about macros before passing it there.
1.2 schwarze 1634: */
1635:
1.124 schwarze 1636: if (r->last != NULL && ! ctl) {
1.2 schwarze 1637: t = r->last->tok;
1.110 schwarze 1638: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.166 schwarze 1639: if (e == ROFF_IGN)
1.149 schwarze 1640: return e;
1.166 schwarze 1641: assert(e == ROFF_CONT);
1.54 schwarze 1642: }
1.191 schwarze 1643: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1644: eqn_read(r->eqn, buf->buf + ppos);
1645: return ROFF_IGN;
1646: }
1.193 schwarze 1647: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1648: tbl_read(r->tbl, ln, buf->buf, ppos);
1649: roff_addtbl(r->man, r->tbl);
1650: return ROFF_IGN;
1651: }
1.124 schwarze 1652: if ( ! ctl)
1.177 schwarze 1653: return roff_parsetext(r, buf, pos, offs);
1.100 schwarze 1654:
1655: /* Skip empty request lines. */
1656:
1.110 schwarze 1657: if (buf->buf[pos] == '"') {
1.100 schwarze 1658: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1659: ln, pos, NULL);
1.149 schwarze 1660: return ROFF_IGN;
1.110 schwarze 1661: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1662: return ROFF_IGN;
1.2 schwarze 1663:
1664: /*
1665: * If a scope is open, go to the child handler for that macro,
1666: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1667: * Don't do so if an equation is open.
1.2 schwarze 1668: */
1669:
1670: if (r->last) {
1.1 schwarze 1671: t = r->last->tok;
1.149 schwarze 1672: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1673: }
1674:
1.115 schwarze 1675: /* No scope is open. This is a new request or macro. */
1676:
1677: spos = pos;
1678: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1679:
1680: /* Tables ignore most macros. */
1681:
1.180 schwarze 1682: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1683: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.115 schwarze 1684: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1685: ln, pos, buf->buf + spos);
1.180 schwarze 1686: if (t != TOKEN_NONE)
1.149 schwarze 1687: return ROFF_IGN;
1.129 schwarze 1688: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1689: pos++;
1.163 schwarze 1690: while (buf->buf[pos] == ' ')
1.129 schwarze 1691: pos++;
1.193 schwarze 1692: tbl_read(r->tbl, ln, buf->buf, pos);
1693: roff_addtbl(r->man, r->tbl);
1694: return ROFF_IGN;
1.115 schwarze 1695: }
1696:
1.177 schwarze 1697: /* For now, let high level macros abort .ce mode. */
1698:
1699: if (ctl && roffce_node != NULL &&
1.196 schwarze 1700: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1701: t == ROFF_TH || t == ROFF_TS)) {
1.177 schwarze 1702: r->man->last = roffce_node;
1703: r->man->next = ROFF_NEXT_SIBLING;
1704: roffce_lines = 0;
1705: roffce_node = NULL;
1706: }
1707:
1.2 schwarze 1708: /*
1.115 schwarze 1709: * This is neither a roff request nor a user-defined macro.
1710: * Let the standard macro set parsers handle it.
1.2 schwarze 1711: */
1712:
1.166 schwarze 1713: if (t == TOKEN_NONE)
1.149 schwarze 1714: return ROFF_CONT;
1.115 schwarze 1715:
1716: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1717:
1.168 schwarze 1718: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1719: }
1720:
1.211 ! schwarze 1721: /*
! 1722: * Internal interface function to tell the roff parser that execution
! 1723: * of the current macro ended. This is required because macro
! 1724: * definitions usually do not end with a .return request.
! 1725: */
! 1726: void
! 1727: roff_userret(struct roff *r)
! 1728: {
! 1729: struct mctx *ctx;
! 1730: int i;
! 1731:
! 1732: assert(r->mstackpos >= 0);
! 1733: ctx = r->mstack + r->mstackpos;
! 1734: for (i = 0; i < ctx->argc; i++)
! 1735: free(ctx->argv[i]);
! 1736: ctx->argc = 0;
! 1737: r->mstackpos--;
! 1738: }
! 1739:
1.27 schwarze 1740: void
1.2 schwarze 1741: roff_endparse(struct roff *r)
1742: {
1.193 schwarze 1743: if (r->last != NULL)
1.94 schwarze 1744: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1745: r->last->line, r->last->col,
1.167 schwarze 1746: roff_name[r->last->tok]);
1.27 schwarze 1747:
1.193 schwarze 1748: if (r->eqn != NULL) {
1.94 schwarze 1749: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.191 schwarze 1750: r->eqn->node->line, r->eqn->node->pos, "EQ");
1751: eqn_parse(r->eqn);
1752: r->eqn = NULL;
1.32 schwarze 1753: }
1754:
1.193 schwarze 1755: if (r->tbl != NULL) {
1.94 schwarze 1756: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1757: r->tbl->line, r->tbl->pos, "TS");
1.193 schwarze 1758: tbl_end(r->tbl);
1759: r->tbl = NULL;
1.27 schwarze 1760: }
1.1 schwarze 1761: }
1762:
1763: /*
1764: * Parse a roff node's type from the input buffer. This must be in the
1765: * form of ".foo xxx" in the usual way.
1766: */
1.166 schwarze 1767: static enum roff_tok
1.87 schwarze 1768: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1769: {
1.87 schwarze 1770: char *cp;
1.16 schwarze 1771: const char *mac;
1772: size_t maclen;
1.187 schwarze 1773: int deftype;
1.166 schwarze 1774: enum roff_tok t;
1.1 schwarze 1775:
1.87 schwarze 1776: cp = buf + *pos;
1777:
1778: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1779: return TOKEN_NONE;
1.1 schwarze 1780:
1.87 schwarze 1781: mac = cp;
1782: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1783:
1.187 schwarze 1784: deftype = ROFFDEF_USER | ROFFDEF_REN;
1785: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1786: switch (deftype) {
1787: case ROFFDEF_USER:
1788: t = ROFF_USERDEF;
1789: break;
1790: case ROFFDEF_REN:
1791: t = ROFF_RENAMED;
1792: break;
1793: default:
1794: t = roffhash_find(r->reqtab, mac, maclen);
1795: break;
1796: }
1.166 schwarze 1797: if (t != TOKEN_NONE)
1.87 schwarze 1798: *pos = cp - buf;
1.197 schwarze 1799: else if (deftype == ROFFDEF_UNDEF) {
1800: /* Using an undefined macro defines it to be empty. */
1801: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1802: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1803: }
1.149 schwarze 1804: return t;
1.1 schwarze 1805: }
1806:
1.138 schwarze 1807: /* --- handling of request blocks ----------------------------------------- */
1808:
1.1 schwarze 1809: static enum rofferr
1.2 schwarze 1810: roff_cblock(ROFF_ARGS)
1.1 schwarze 1811: {
1812:
1.2 schwarze 1813: /*
1814: * A block-close `..' should only be invoked as a child of an
1815: * ignore macro, otherwise raise a warning and just ignore it.
1816: */
1817:
1.110 schwarze 1818: if (r->last == NULL) {
1.94 schwarze 1819: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1820: ln, ppos, "..");
1.149 schwarze 1821: return ROFF_IGN;
1.2 schwarze 1822: }
1.1 schwarze 1823:
1.2 schwarze 1824: switch (r->last->tok) {
1.80 schwarze 1825: case ROFF_am:
1.93 schwarze 1826: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1827: case ROFF_ami:
1828: case ROFF_de:
1.23 schwarze 1829: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1830: case ROFF_dei:
1831: case ROFF_ig:
1.2 schwarze 1832: break;
1833: default:
1.94 schwarze 1834: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1835: ln, ppos, "..");
1.149 schwarze 1836: return ROFF_IGN;
1.2 schwarze 1837: }
1838:
1.110 schwarze 1839: if (buf->buf[pos] != '\0')
1.90 schwarze 1840: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1841: ".. %s", buf->buf + pos);
1.2 schwarze 1842:
1843: roffnode_pop(r);
1844: roffnode_cleanscope(r);
1.149 schwarze 1845: return ROFF_IGN;
1.2 schwarze 1846:
1847: }
1.1 schwarze 1848:
1.2 schwarze 1849: static void
1850: roffnode_cleanscope(struct roff *r)
1851: {
1.1 schwarze 1852:
1.2 schwarze 1853: while (r->last) {
1.46 schwarze 1854: if (--r->last->endspan != 0)
1.2 schwarze 1855: break;
1856: roffnode_pop(r);
1857: }
1858: }
1.1 schwarze 1859:
1.68 schwarze 1860: static void
1861: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1862: {
1.1 schwarze 1863:
1.2 schwarze 1864: if (NULL == r->last) {
1.94 schwarze 1865: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1866: ln, ppos, "\\}");
1.68 schwarze 1867: return;
1.2 schwarze 1868: }
1.1 schwarze 1869:
1.2 schwarze 1870: switch (r->last->tok) {
1.80 schwarze 1871: case ROFF_el:
1872: case ROFF_ie:
1873: case ROFF_if:
1.2 schwarze 1874: break;
1875: default:
1.94 schwarze 1876: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1877: ln, ppos, "\\}");
1.68 schwarze 1878: return;
1.2 schwarze 1879: }
1.1 schwarze 1880:
1.2 schwarze 1881: if (r->last->endspan > -1) {
1.94 schwarze 1882: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1883: ln, ppos, "\\}");
1.68 schwarze 1884: return;
1.2 schwarze 1885: }
1886:
1887: roffnode_pop(r);
1888: roffnode_cleanscope(r);
1.68 schwarze 1889: return;
1.1 schwarze 1890: }
1891:
1892: static enum rofferr
1.2 schwarze 1893: roff_block(ROFF_ARGS)
1.1 schwarze 1894: {
1.187 schwarze 1895: const char *name, *value;
1896: char *call, *cp, *iname, *rname;
1897: size_t csz, namesz, rsz;
1898: int deftype;
1.16 schwarze 1899:
1.93 schwarze 1900: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1901:
1.110 schwarze 1902: if (tok == ROFF_de1)
1.93 schwarze 1903: tok = ROFF_de;
1.123 schwarze 1904: else if (tok == ROFF_dei1)
1905: tok = ROFF_dei;
1.110 schwarze 1906: else if (tok == ROFF_am1)
1.93 schwarze 1907: tok = ROFF_am;
1.123 schwarze 1908: else if (tok == ROFF_ami1)
1909: tok = ROFF_ami;
1.93 schwarze 1910:
1911: /* Parse the macro name argument. */
1912:
1.110 schwarze 1913: cp = buf->buf + pos;
1914: if (tok == ROFF_ig) {
1.93 schwarze 1915: iname = NULL;
1916: namesz = 0;
1917: } else {
1918: iname = cp;
1919: namesz = roff_getname(r, &cp, ln, ppos);
1920: iname[namesz] = '\0';
1921: }
1.22 schwarze 1922:
1.93 schwarze 1923: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1924:
1.110 schwarze 1925: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1926: deftype = ROFFDEF_USER;
1927: name = roff_getstrn(r, iname, namesz, &deftype);
1928: if (name == NULL) {
1.93 schwarze 1929: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1930: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1931: "%.*s", (int)namesz, iname);
1932: namesz = 0;
1933: } else
1934: namesz = strlen(name);
1935: } else
1936: name = iname;
1.22 schwarze 1937:
1.110 schwarze 1938: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1939: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1940: ln, ppos, roff_name[tok]);
1.149 schwarze 1941: return ROFF_IGN;
1.93 schwarze 1942: }
1.2 schwarze 1943:
1.16 schwarze 1944: roffnode_push(r, tok, name, ln, ppos);
1945:
1946: /*
1947: * At the beginning of a `de' macro, clear the existing string
1948: * with the same name, if there is one. New content will be
1.66 schwarze 1949: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1950: */
1.22 schwarze 1951:
1.183 schwarze 1952: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 1953: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 1954: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 1955: } else if (tok == ROFF_am || tok == ROFF_ami) {
1956: deftype = ROFFDEF_ANY;
1957: value = roff_getstrn(r, iname, namesz, &deftype);
1958: switch (deftype) { /* Before appending, ... */
1959: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1960: roff_setstrn(&r->strtab, name, namesz,
1961: value, strlen(value), 0);
1962: break;
1963: case ROFFDEF_REN: /* call original standard macro. */
1964: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1965: (int)strlen(value), value);
1966: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1967: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1968: free(call);
1969: break;
1970: case ROFFDEF_STD: /* rename and call standard macro. */
1971: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1972: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1973: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1974: (int)rsz, rname);
1975: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1976: free(call);
1977: free(rname);
1978: break;
1979: default:
1980: break;
1981: }
1.183 schwarze 1982: }
1.2 schwarze 1983:
1.110 schwarze 1984: if (*cp == '\0')
1.149 schwarze 1985: return ROFF_IGN;
1.1 schwarze 1986:
1.93 schwarze 1987: /* Get the custom end marker. */
1.22 schwarze 1988:
1.93 schwarze 1989: iname = cp;
1.86 schwarze 1990: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1991:
1992: /* Resolve the end marker if it is indirect. */
1993:
1.110 schwarze 1994: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1995: deftype = ROFFDEF_USER;
1996: name = roff_getstrn(r, iname, namesz, &deftype);
1997: if (name == NULL) {
1.93 schwarze 1998: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1999: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 2000: "%.*s", (int)namesz, iname);
2001: namesz = 0;
2002: } else
2003: namesz = strlen(name);
2004: } else
2005: name = iname;
2006:
1.86 schwarze 2007: if (namesz)
2008: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 2009:
1.110 schwarze 2010: if (*cp != '\0')
1.90 schwarze 2011: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 2012: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 2013:
1.149 schwarze 2014: return ROFF_IGN;
1.1 schwarze 2015: }
2016:
2017: static enum rofferr
1.2 schwarze 2018: roff_block_sub(ROFF_ARGS)
1.1 schwarze 2019: {
1.166 schwarze 2020: enum roff_tok t;
1.2 schwarze 2021: int i, j;
2022:
2023: /*
2024: * First check whether a custom macro exists at this level. If
2025: * it does, then check against it. This is some of groff's
2026: * stranger behaviours. If we encountered a custom end-scope
2027: * tag and that tag also happens to be a "real" macro, then we
2028: * need to try interpreting it again as a real macro. If it's
2029: * not, then return ignore. Else continue.
2030: */
2031:
2032: if (r->last->end) {
1.35 schwarze 2033: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 2034: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 2035: break;
1.1 schwarze 2036:
1.110 schwarze 2037: if (r->last->end[j] == '\0' &&
2038: (buf->buf[i] == '\0' ||
2039: buf->buf[i] == ' ' ||
2040: buf->buf[i] == '\t')) {
1.2 schwarze 2041: roffnode_pop(r);
2042: roffnode_cleanscope(r);
1.1 schwarze 2043:
1.110 schwarze 2044: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 2045: i++;
2046:
2047: pos = i;
1.110 schwarze 2048: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 2049: TOKEN_NONE)
1.149 schwarze 2050: return ROFF_RERUN;
2051: return ROFF_IGN;
1.2 schwarze 2052: }
1.1 schwarze 2053: }
2054:
1.2 schwarze 2055: /*
2056: * If we have no custom end-query or lookup failed, then try
2057: * pulling it out of the hashtable.
2058: */
1.1 schwarze 2059:
1.110 schwarze 2060: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 2061:
1.110 schwarze 2062: if (t != ROFF_cblock) {
2063: if (tok != ROFF_ig)
2064: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 2065: return ROFF_IGN;
1.16 schwarze 2066: }
1.1 schwarze 2067:
1.149 schwarze 2068: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 2069: }
2070:
2071: static enum rofferr
2072: roff_block_text(ROFF_ARGS)
2073: {
2074:
1.110 schwarze 2075: if (tok != ROFF_ig)
2076: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 2077:
1.149 schwarze 2078: return ROFF_IGN;
1.2 schwarze 2079: }
2080:
2081: static enum rofferr
2082: roff_cond_sub(ROFF_ARGS)
2083: {
1.166 schwarze 2084: enum roff_tok t;
1.37 schwarze 2085: char *ep;
1.71 schwarze 2086: int rr;
1.2 schwarze 2087:
2088: rr = r->last->rule;
1.37 schwarze 2089: roffnode_cleanscope(r);
1.39 schwarze 2090:
1.69 schwarze 2091: /*
2092: * If `\}' occurs on a macro line without a preceding macro,
2093: * drop the line completely.
2094: */
2095:
1.110 schwarze 2096: ep = buf->buf + pos;
2097: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 2098: rr = 0;
1.69 schwarze 2099:
1.50 schwarze 2100: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 2101:
1.110 schwarze 2102: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 2103: switch (ep[1]) {
2104: case '}':
2105: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2106: roff_ccond(r, ln, ep - buf->buf);
2107: break;
2108: case '\0':
2109: ++ep;
2110: break;
2111: default:
2112: ep += 2;
2113: break;
1.70 schwarze 2114: }
1.50 schwarze 2115: }
1.190 schwarze 2116:
2117: /*
2118: * Fully handle known macros when they are structurally
2119: * required or when the conditional evaluated to true.
2120: */
2121:
2122: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2123: return t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT)
2124: ? (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) : rr
2125: ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 2126: }
2127:
2128: static enum rofferr
2129: roff_cond_text(ROFF_ARGS)
2130: {
1.37 schwarze 2131: char *ep;
1.71 schwarze 2132: int rr;
1.2 schwarze 2133:
2134: rr = r->last->rule;
1.37 schwarze 2135: roffnode_cleanscope(r);
1.1 schwarze 2136:
1.110 schwarze 2137: ep = buf->buf + pos;
2138: while ((ep = strchr(ep, '\\')) != NULL) {
2139: if (*(++ep) == '}') {
1.70 schwarze 2140: *ep = '&';
1.110 schwarze 2141: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 2142: }
1.119 schwarze 2143: if (*ep != '\0')
2144: ++ep;
1.2 schwarze 2145: }
1.149 schwarze 2146: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 2147: }
2148:
1.138 schwarze 2149: /* --- handling of numeric and conditional expressions -------------------- */
2150:
1.77 schwarze 2151: /*
2152: * Parse a single signed integer number. Stop at the first non-digit.
2153: * If there is at least one digit, return success and advance the
2154: * parse point, else return failure and let the parse point unchanged.
2155: * Ignore overflows, treat them just like the C language.
2156: */
1.56 schwarze 2157: static int
1.133 schwarze 2158: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2159: {
1.133 schwarze 2160: int myres, scaled, n, p;
1.79 schwarze 2161:
2162: if (NULL == res)
2163: res = &myres;
1.56 schwarze 2164:
2165: p = *pos;
2166: n = v[p] == '-';
1.133 schwarze 2167: if (n || v[p] == '+')
1.56 schwarze 2168: p++;
2169:
1.133 schwarze 2170: if (flags & ROFFNUM_WHITE)
2171: while (isspace((unsigned char)v[p]))
2172: p++;
2173:
1.56 schwarze 2174: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2175: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2176: if (p == *pos + n)
2177: return 0;
2178:
2179: if (n)
2180: *res = -*res;
2181:
1.126 schwarze 2182: /* Each number may be followed by one optional scaling unit. */
2183:
2184: switch (v[p]) {
2185: case 'f':
1.133 schwarze 2186: scaled = *res * 65536;
1.126 schwarze 2187: break;
2188: case 'i':
1.133 schwarze 2189: scaled = *res * 240;
1.126 schwarze 2190: break;
2191: case 'c':
1.133 schwarze 2192: scaled = *res * 240 / 2.54;
1.126 schwarze 2193: break;
2194: case 'v':
2195: case 'P':
1.133 schwarze 2196: scaled = *res * 40;
1.126 schwarze 2197: break;
2198: case 'm':
2199: case 'n':
1.133 schwarze 2200: scaled = *res * 24;
1.126 schwarze 2201: break;
2202: case 'p':
1.133 schwarze 2203: scaled = *res * 10 / 3;
1.126 schwarze 2204: break;
2205: case 'u':
1.133 schwarze 2206: scaled = *res;
1.126 schwarze 2207: break;
2208: case 'M':
1.133 schwarze 2209: scaled = *res * 6 / 25;
1.126 schwarze 2210: break;
2211: default:
1.133 schwarze 2212: scaled = *res;
1.126 schwarze 2213: p--;
2214: break;
2215: }
1.133 schwarze 2216: if (flags & ROFFNUM_SCALE)
2217: *res = scaled;
1.126 schwarze 2218:
2219: *pos = p + 1;
1.149 schwarze 2220: return 1;
1.56 schwarze 2221: }
2222:
1.71 schwarze 2223: /*
2224: * Evaluate a string comparison condition.
2225: * The first character is the delimiter.
2226: * Succeed if the string up to its second occurrence
2227: * matches the string up to its third occurence.
2228: * Advance the cursor after the third occurrence
2229: * or lacking that, to the end of the line.
2230: */
2231: static int
2232: roff_evalstrcond(const char *v, int *pos)
2233: {
2234: const char *s1, *s2, *s3;
2235: int match;
2236:
2237: match = 0;
2238: s1 = v + *pos; /* initial delimiter */
2239: s2 = s1 + 1; /* for scanning the first string */
2240: s3 = strchr(s2, *s1); /* for scanning the second string */
2241:
2242: if (NULL == s3) /* found no middle delimiter */
2243: goto out;
2244:
2245: while ('\0' != *++s3) {
2246: if (*s2 != *s3) { /* mismatch */
2247: s3 = strchr(s3, *s1);
2248: break;
2249: }
2250: if (*s3 == *s1) { /* found the final delimiter */
2251: match = 1;
2252: break;
2253: }
2254: s2++;
2255: }
2256:
2257: out:
2258: if (NULL == s3)
2259: s3 = strchr(s2, '\0');
1.114 schwarze 2260: else if (*s3 != '\0')
1.71 schwarze 2261: s3++;
2262: *pos = s3 - v;
1.149 schwarze 2263: return match;
1.71 schwarze 2264: }
2265:
1.77 schwarze 2266: /*
2267: * Evaluate an optionally negated single character, numerical,
2268: * or string condition.
2269: */
1.71 schwarze 2270: static int
1.143 schwarze 2271: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2272: {
1.208 schwarze 2273: const char *start, *end;
2274: char *cp, *name;
2275: size_t sz;
2276: int deftype, len, number, savepos, istrue, wanttrue;
1.5 schwarze 2277:
1.71 schwarze 2278: if ('!' == v[*pos]) {
2279: wanttrue = 0;
2280: (*pos)++;
2281: } else
2282: wanttrue = 1;
2283:
1.5 schwarze 2284: switch (v[*pos]) {
1.112 schwarze 2285: case '\0':
1.149 schwarze 2286: return 0;
1.80 schwarze 2287: case 'n':
2288: case 'o':
1.5 schwarze 2289: (*pos)++;
1.149 schwarze 2290: return wanttrue;
1.80 schwarze 2291: case 'e':
2292: case 't':
1.111 schwarze 2293: case 'v':
1.5 schwarze 2294: (*pos)++;
1.149 schwarze 2295: return !wanttrue;
1.208 schwarze 2296: case 'c':
2297: do {
2298: (*pos)++;
2299: } while (v[*pos] == ' ');
2300:
2301: /*
2302: * Quirk for groff compatibility:
2303: * The horizontal tab is neither available nor unavailable.
2304: */
2305:
2306: if (v[*pos] == '\t') {
2307: (*pos)++;
2308: return 0;
2309: }
2310:
2311: /* Printable ASCII characters are available. */
2312:
2313: if (v[*pos] != '\\') {
2314: (*pos)++;
2315: return wanttrue;
2316: }
2317:
2318: end = v + ++*pos;
2319: switch (mandoc_escape(&end, &start, &len)) {
2320: case ESCAPE_SPECIAL:
2321: istrue = mchars_spec2cp(start, len) != -1;
2322: break;
2323: case ESCAPE_UNICODE:
2324: istrue = 1;
2325: break;
2326: case ESCAPE_NUMBERED:
2327: istrue = mchars_num2char(start, len) != -1;
2328: break;
2329: default:
2330: istrue = !wanttrue;
2331: break;
2332: }
2333: *pos = end - v;
2334: return istrue == wanttrue;
1.182 schwarze 2335: case 'd':
1.143 schwarze 2336: case 'r':
1.182 schwarze 2337: cp = v + *pos + 1;
2338: while (*cp == ' ')
2339: cp++;
2340: name = cp;
2341: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2342: if (sz == 0)
2343: istrue = 0;
2344: else if (v[*pos] == 'r')
2345: istrue = roff_hasregn(r, name, sz);
2346: else {
2347: deftype = ROFFDEF_ANY;
2348: roff_getstrn(r, name, sz, &deftype);
2349: istrue = !!deftype;
2350: }
1.143 schwarze 2351: *pos = cp - v;
1.182 schwarze 2352: return istrue == wanttrue;
1.5 schwarze 2353: default:
2354: break;
2355: }
2356:
1.113 schwarze 2357: savepos = *pos;
1.133 schwarze 2358: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2359: return (number > 0) == wanttrue;
1.113 schwarze 2360: else if (*pos == savepos)
1.149 schwarze 2361: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2362: else
1.149 schwarze 2363: return 0;
1.5 schwarze 2364: }
2365:
1.2 schwarze 2366: static enum rofferr
1.21 schwarze 2367: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2368: {
1.30 schwarze 2369:
1.149 schwarze 2370: return ROFF_IGN;
1.21 schwarze 2371: }
2372:
2373: static enum rofferr
1.123 schwarze 2374: roff_insec(ROFF_ARGS)
2375: {
2376:
2377: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2378: ln, ppos, roff_name[tok]);
1.149 schwarze 2379: return ROFF_IGN;
1.123 schwarze 2380: }
2381:
2382: static enum rofferr
2383: roff_unsupp(ROFF_ARGS)
2384: {
2385:
2386: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2387: ln, ppos, roff_name[tok]);
1.149 schwarze 2388: return ROFF_IGN;
1.123 schwarze 2389: }
2390:
2391: static enum rofferr
1.2 schwarze 2392: roff_cond(ROFF_ARGS)
2393: {
1.46 schwarze 2394:
2395: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2396:
1.80 schwarze 2397: /*
1.35 schwarze 2398: * An `.el' has no conditional body: it will consume the value
2399: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2400: * defaults to DENY.
1.35 schwarze 2401: *
2402: * If we're not an `el', however, then evaluate the conditional.
2403: */
1.1 schwarze 2404:
1.110 schwarze 2405: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2406: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2407: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2408:
1.35 schwarze 2409: /*
2410: * An if-else will put the NEGATION of the current evaluated
2411: * conditional into the stack of rules.
2412: */
2413:
1.110 schwarze 2414: if (tok == ROFF_ie) {
1.96 schwarze 2415: if (r->rstackpos + 1 == r->rstacksz) {
2416: r->rstacksz += 16;
2417: r->rstack = mandoc_reallocarray(r->rstack,
2418: r->rstacksz, sizeof(int));
1.35 schwarze 2419: }
1.71 schwarze 2420: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2421: }
1.5 schwarze 2422:
2423: /* If the parent has false as its rule, then so do we. */
2424:
1.71 schwarze 2425: if (r->last->parent && !r->last->parent->rule)
2426: r->last->rule = 0;
1.5 schwarze 2427:
2428: /*
1.46 schwarze 2429: * Determine scope.
2430: * If there is nothing on the line after the conditional,
2431: * not even whitespace, use next-line scope.
1.5 schwarze 2432: */
1.2 schwarze 2433:
1.110 schwarze 2434: if (buf->buf[pos] == '\0') {
1.46 schwarze 2435: r->last->endspan = 2;
2436: goto out;
2437: }
2438:
1.110 schwarze 2439: while (buf->buf[pos] == ' ')
1.46 schwarze 2440: pos++;
2441:
2442: /* An opening brace requests multiline scope. */
1.2 schwarze 2443:
1.110 schwarze 2444: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2445: r->last->endspan = -1;
2446: pos += 2;
1.144 schwarze 2447: while (buf->buf[pos] == ' ')
2448: pos++;
1.46 schwarze 2449: goto out;
1.80 schwarze 2450: }
1.2 schwarze 2451:
2452: /*
1.46 schwarze 2453: * Anything else following the conditional causes
2454: * single-line scope. Warn if the scope contains
2455: * nothing but trailing whitespace.
1.2 schwarze 2456: */
2457:
1.110 schwarze 2458: if (buf->buf[pos] == '\0')
1.89 schwarze 2459: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2460: ln, ppos, roff_name[tok]);
1.2 schwarze 2461:
1.46 schwarze 2462: r->last->endspan = 1;
1.1 schwarze 2463:
1.46 schwarze 2464: out:
1.2 schwarze 2465: *offs = pos;
1.149 schwarze 2466: return ROFF_RERUN;
1.1 schwarze 2467: }
2468:
1.2 schwarze 2469: static enum rofferr
1.7 schwarze 2470: roff_ds(ROFF_ARGS)
2471: {
1.85 schwarze 2472: char *string;
2473: const char *name;
2474: size_t namesz;
1.10 schwarze 2475:
1.123 schwarze 2476: /* Ignore groff compatibility mode for now. */
2477:
2478: if (tok == ROFF_ds1)
2479: tok = ROFF_ds;
2480: else if (tok == ROFF_as1)
2481: tok = ROFF_as;
2482:
1.10 schwarze 2483: /*
1.85 schwarze 2484: * The first word is the name of the string.
2485: * If it is empty or terminated by an escape sequence,
2486: * abort the `ds' request without defining anything.
1.10 schwarze 2487: */
1.7 schwarze 2488:
1.110 schwarze 2489: name = string = buf->buf + pos;
2490: if (*name == '\0')
1.149 schwarze 2491: return ROFF_IGN;
1.7 schwarze 2492:
1.85 schwarze 2493: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2494: if (name[namesz] == '\\')
1.149 schwarze 2495: return ROFF_IGN;
1.85 schwarze 2496:
2497: /* Read past the initial double-quote, if any. */
1.110 schwarze 2498: if (*string == '"')
1.7 schwarze 2499: string++;
2500:
1.10 schwarze 2501: /* The rest is the value. */
1.85 schwarze 2502: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2503: ROFF_as == tok);
1.183 schwarze 2504: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2505: return ROFF_IGN;
1.7 schwarze 2506: }
2507:
1.77 schwarze 2508: /*
2509: * Parse a single operator, one or two characters long.
2510: * If the operator is recognized, return success and advance the
2511: * parse point, else return failure and let the parse point unchanged.
2512: */
2513: static int
2514: roff_getop(const char *v, int *pos, char *res)
2515: {
2516:
2517: *res = v[*pos];
2518:
2519: switch (*res) {
1.80 schwarze 2520: case '+':
2521: case '-':
2522: case '*':
2523: case '/':
2524: case '%':
2525: case '&':
2526: case ':':
1.77 schwarze 2527: break;
2528: case '<':
2529: switch (v[*pos + 1]) {
1.80 schwarze 2530: case '=':
1.77 schwarze 2531: *res = 'l';
2532: (*pos)++;
2533: break;
1.80 schwarze 2534: case '>':
1.77 schwarze 2535: *res = '!';
2536: (*pos)++;
2537: break;
1.80 schwarze 2538: case '?':
1.77 schwarze 2539: *res = 'i';
2540: (*pos)++;
2541: break;
2542: default:
2543: break;
2544: }
2545: break;
2546: case '>':
2547: switch (v[*pos + 1]) {
1.80 schwarze 2548: case '=':
1.77 schwarze 2549: *res = 'g';
2550: (*pos)++;
2551: break;
1.80 schwarze 2552: case '?':
1.77 schwarze 2553: *res = 'a';
2554: (*pos)++;
2555: break;
2556: default:
2557: break;
2558: }
2559: break;
2560: case '=':
2561: if ('=' == v[*pos + 1])
2562: (*pos)++;
2563: break;
2564: default:
1.149 schwarze 2565: return 0;
1.77 schwarze 2566: }
2567: (*pos)++;
2568:
1.149 schwarze 2569: return *res;
1.77 schwarze 2570: }
2571:
2572: /*
2573: * Evaluate either a parenthesized numeric expression
2574: * or a single signed integer number.
2575: */
2576: static int
1.106 schwarze 2577: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2578: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2579: {
2580:
2581: if ('(' != v[*pos])
1.149 schwarze 2582: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2583:
2584: (*pos)++;
1.133 schwarze 2585: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2586: return 0;
1.77 schwarze 2587:
1.79 schwarze 2588: /*
2589: * Omission of the closing parenthesis
2590: * is an error in validation mode,
2591: * but ignored in evaluation mode.
2592: */
2593:
1.77 schwarze 2594: if (')' == v[*pos])
2595: (*pos)++;
1.79 schwarze 2596: else if (NULL == res)
1.149 schwarze 2597: return 0;
1.77 schwarze 2598:
1.149 schwarze 2599: return 1;
1.77 schwarze 2600: }
2601:
2602: /*
2603: * Evaluate a complete numeric expression.
2604: * Proceed left to right, there is no concept of precedence.
2605: */
2606: static int
1.106 schwarze 2607: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2608: int *pos, int *res, int flags)
1.77 schwarze 2609: {
2610: int mypos, operand2;
2611: char operator;
2612:
2613: if (NULL == pos) {
2614: mypos = 0;
2615: pos = &mypos;
2616: }
2617:
1.133 schwarze 2618: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2619: while (isspace((unsigned char)v[*pos]))
2620: (*pos)++;
2621:
1.133 schwarze 2622: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2623: return 0;
1.77 schwarze 2624:
2625: while (1) {
1.133 schwarze 2626: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2627: while (isspace((unsigned char)v[*pos]))
2628: (*pos)++;
2629:
2630: if ( ! roff_getop(v, pos, &operator))
2631: break;
2632:
1.133 schwarze 2633: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2634: while (isspace((unsigned char)v[*pos]))
2635: (*pos)++;
2636:
1.133 schwarze 2637: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2638: return 0;
1.77 schwarze 2639:
1.133 schwarze 2640: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2641: while (isspace((unsigned char)v[*pos]))
2642: (*pos)++;
1.79 schwarze 2643:
2644: if (NULL == res)
2645: continue;
1.77 schwarze 2646:
2647: switch (operator) {
1.80 schwarze 2648: case '+':
1.77 schwarze 2649: *res += operand2;
2650: break;
1.80 schwarze 2651: case '-':
1.77 schwarze 2652: *res -= operand2;
2653: break;
1.80 schwarze 2654: case '*':
1.77 schwarze 2655: *res *= operand2;
2656: break;
1.80 schwarze 2657: case '/':
1.116 schwarze 2658: if (operand2 == 0) {
1.106 schwarze 2659: mandoc_msg(MANDOCERR_DIVZERO,
2660: r->parse, ln, *pos, v);
2661: *res = 0;
2662: break;
2663: }
1.77 schwarze 2664: *res /= operand2;
2665: break;
1.80 schwarze 2666: case '%':
1.116 schwarze 2667: if (operand2 == 0) {
2668: mandoc_msg(MANDOCERR_DIVZERO,
2669: r->parse, ln, *pos, v);
2670: *res = 0;
2671: break;
2672: }
1.77 schwarze 2673: *res %= operand2;
2674: break;
1.80 schwarze 2675: case '<':
1.77 schwarze 2676: *res = *res < operand2;
2677: break;
1.80 schwarze 2678: case '>':
1.77 schwarze 2679: *res = *res > operand2;
2680: break;
1.80 schwarze 2681: case 'l':
1.77 schwarze 2682: *res = *res <= operand2;
2683: break;
1.80 schwarze 2684: case 'g':
1.77 schwarze 2685: *res = *res >= operand2;
2686: break;
1.80 schwarze 2687: case '=':
1.77 schwarze 2688: *res = *res == operand2;
2689: break;
1.80 schwarze 2690: case '!':
1.77 schwarze 2691: *res = *res != operand2;
2692: break;
1.80 schwarze 2693: case '&':
1.77 schwarze 2694: *res = *res && operand2;
2695: break;
1.80 schwarze 2696: case ':':
1.77 schwarze 2697: *res = *res || operand2;
2698: break;
1.80 schwarze 2699: case 'i':
1.77 schwarze 2700: if (operand2 < *res)
2701: *res = operand2;
2702: break;
1.80 schwarze 2703: case 'a':
1.77 schwarze 2704: if (operand2 > *res)
2705: *res = operand2;
2706: break;
2707: default:
2708: abort();
2709: }
2710: }
1.149 schwarze 2711: return 1;
1.77 schwarze 2712: }
2713:
1.138 schwarze 2714: /* --- register management ------------------------------------------------ */
2715:
1.52 schwarze 2716: void
1.60 schwarze 2717: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2718: {
1.199 schwarze 2719: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.198 schwarze 2720: }
2721:
2722: static void
2723: roff_setregn(struct roff *r, const char *name, size_t len,
1.199 schwarze 2724: int val, char sign, int step)
1.198 schwarze 2725: {
1.52 schwarze 2726: struct roffreg *reg;
2727:
2728: /* Search for an existing register with the same name. */
2729: reg = r->regtab;
2730:
1.198 schwarze 2731: while (reg != NULL && (reg->key.sz != len ||
2732: strncmp(reg->key.p, name, len) != 0))
1.52 schwarze 2733: reg = reg->next;
1.41 schwarze 2734:
1.52 schwarze 2735: if (NULL == reg) {
2736: /* Create a new register. */
2737: reg = mandoc_malloc(sizeof(struct roffreg));
1.198 schwarze 2738: reg->key.p = mandoc_strndup(name, len);
2739: reg->key.sz = len;
1.60 schwarze 2740: reg->val = 0;
1.199 schwarze 2741: reg->step = 0;
1.52 schwarze 2742: reg->next = r->regtab;
2743: r->regtab = reg;
2744: }
2745:
1.60 schwarze 2746: if ('+' == sign)
2747: reg->val += val;
2748: else if ('-' == sign)
2749: reg->val -= val;
2750: else
2751: reg->val = val;
1.199 schwarze 2752: if (step != INT_MIN)
2753: reg->step = step;
1.41 schwarze 2754: }
2755:
1.65 schwarze 2756: /*
2757: * Handle some predefined read-only number registers.
2758: * For now, return -1 if the requested register is not predefined;
2759: * in case a predefined read-only register having the value -1
2760: * were to turn up, another special value would have to be chosen.
2761: */
2762: static int
1.145 schwarze 2763: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2764: {
2765:
2766: switch (*name) {
1.145 schwarze 2767: case '$': /* Number of arguments of the last macro evaluated. */
1.211 ! schwarze 2768: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.80 schwarze 2769: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2770: return 0;
1.80 schwarze 2771: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2772: return 1;
1.80 schwarze 2773: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2774: return 24;
1.80 schwarze 2775: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2776: return 0;
1.80 schwarze 2777: case 'T': /* Some output device is always defined. */
1.149 schwarze 2778: return 1;
1.80 schwarze 2779: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2780: return 40;
1.65 schwarze 2781: default:
1.149 schwarze 2782: return -1;
1.65 schwarze 2783: }
2784: }
2785:
1.53 schwarze 2786: int
1.198 schwarze 2787: roff_getreg(struct roff *r, const char *name)
1.41 schwarze 2788: {
1.199 schwarze 2789: return roff_getregn(r, name, strlen(name), '\0');
1.53 schwarze 2790: }
2791:
2792: static int
1.199 schwarze 2793: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.53 schwarze 2794: {
2795: struct roffreg *reg;
1.65 schwarze 2796: int val;
2797:
2798: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2799: val = roff_getregro(r, name + 1);
1.65 schwarze 2800: if (-1 != val)
1.149 schwarze 2801: return val;
1.65 schwarze 2802: }
1.53 schwarze 2803:
1.199 schwarze 2804: for (reg = r->regtab; reg; reg = reg->next) {
1.53 schwarze 2805: if (len == reg->key.sz &&
1.199 schwarze 2806: 0 == strncmp(name, reg->key.p, len)) {
2807: switch (sign) {
2808: case '+':
2809: reg->val += reg->step;
2810: break;
2811: case '-':
2812: reg->val -= reg->step;
2813: break;
2814: default:
2815: break;
2816: }
1.149 schwarze 2817: return reg->val;
1.199 schwarze 2818: }
2819: }
1.143 schwarze 2820:
1.199 schwarze 2821: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.149 schwarze 2822: return 0;
1.143 schwarze 2823: }
2824:
2825: static int
2826: roff_hasregn(const struct roff *r, const char *name, size_t len)
2827: {
2828: struct roffreg *reg;
2829: int val;
2830:
2831: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2832: val = roff_getregro(r, name + 1);
1.143 schwarze 2833: if (-1 != val)
1.149 schwarze 2834: return 1;
1.143 schwarze 2835: }
2836:
2837: for (reg = r->regtab; reg; reg = reg->next)
2838: if (len == reg->key.sz &&
2839: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2840: return 1;
1.41 schwarze 2841:
1.149 schwarze 2842: return 0;
1.41 schwarze 2843: }
2844:
1.52 schwarze 2845: static void
2846: roff_freereg(struct roffreg *reg)
1.41 schwarze 2847: {
1.52 schwarze 2848: struct roffreg *old_reg;
1.41 schwarze 2849:
1.52 schwarze 2850: while (NULL != reg) {
2851: free(reg->key.p);
2852: old_reg = reg;
2853: reg = reg->next;
2854: free(old_reg);
2855: }
1.41 schwarze 2856: }
1.7 schwarze 2857:
2858: static enum rofferr
1.6 schwarze 2859: roff_nr(ROFF_ARGS)
1.1 schwarze 2860: {
1.199 schwarze 2861: char *key, *val, *step;
1.85 schwarze 2862: size_t keysz;
1.199 schwarze 2863: int iv, is, len;
1.60 schwarze 2864: char sign;
1.6 schwarze 2865:
1.110 schwarze 2866: key = val = buf->buf + pos;
2867: if (*key == '\0')
1.149 schwarze 2868: return ROFF_IGN;
1.85 schwarze 2869:
2870: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2871: if (key[keysz] == '\\')
1.149 schwarze 2872: return ROFF_IGN;
1.6 schwarze 2873:
1.60 schwarze 2874: sign = *val;
1.110 schwarze 2875: if (sign == '+' || sign == '-')
1.60 schwarze 2876: val++;
2877:
1.199 schwarze 2878: len = 0;
2879: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2880: return ROFF_IGN;
2881:
2882: step = val + len;
2883: while (isspace((unsigned char)*step))
2884: step++;
2885: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2886: is = INT_MIN;
1.1 schwarze 2887:
1.199 schwarze 2888: roff_setregn(r, key, keysz, iv, sign, is);
1.149 schwarze 2889: return ROFF_IGN;
1.76 schwarze 2890: }
2891:
2892: static enum rofferr
2893: roff_rr(ROFF_ARGS)
2894: {
2895: struct roffreg *reg, **prev;
1.85 schwarze 2896: char *name, *cp;
2897: size_t namesz;
1.76 schwarze 2898:
1.110 schwarze 2899: name = cp = buf->buf + pos;
2900: if (*name == '\0')
1.149 schwarze 2901: return ROFF_IGN;
1.85 schwarze 2902: namesz = roff_getname(r, &cp, ln, pos);
2903: name[namesz] = '\0';
1.76 schwarze 2904:
2905: prev = &r->regtab;
2906: while (1) {
2907: reg = *prev;
1.110 schwarze 2908: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2909: break;
2910: prev = ®->next;
2911: }
1.110 schwarze 2912: if (reg != NULL) {
1.76 schwarze 2913: *prev = reg->next;
2914: free(reg->key.p);
2915: free(reg);
2916: }
1.149 schwarze 2917: return ROFF_IGN;
1.29 schwarze 2918: }
2919:
1.138 schwarze 2920: /* --- handler functions for roff requests -------------------------------- */
2921:
1.29 schwarze 2922: static enum rofferr
2923: roff_rm(ROFF_ARGS)
2924: {
2925: const char *name;
2926: char *cp;
1.85 schwarze 2927: size_t namesz;
1.29 schwarze 2928:
1.110 schwarze 2929: cp = buf->buf + pos;
2930: while (*cp != '\0') {
1.85 schwarze 2931: name = cp;
1.110 schwarze 2932: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2933: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 2934: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 2935: if (name[namesz] == '\\')
1.85 schwarze 2936: break;
1.29 schwarze 2937: }
1.149 schwarze 2938: return ROFF_IGN;
1.51 schwarze 2939: }
2940:
2941: static enum rofferr
2942: roff_it(ROFF_ARGS)
2943: {
2944: int iv;
2945:
2946: /* Parse the number of lines. */
1.133 schwarze 2947:
2948: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2949: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2950: ln, ppos, buf->buf + 1);
1.149 schwarze 2951: return ROFF_IGN;
1.51 schwarze 2952: }
2953:
1.134 schwarze 2954: while (isspace((unsigned char)buf->buf[pos]))
2955: pos++;
2956:
2957: /*
2958: * Arm the input line trap.
2959: * Special-casing "an-trap" is an ugly workaround to cope
2960: * with DocBook stupidly fiddling with man(7) internals.
2961: */
1.133 schwarze 2962:
1.51 schwarze 2963: roffit_lines = iv;
1.134 schwarze 2964: roffit_macro = mandoc_strdup(iv != 1 ||
2965: strcmp(buf->buf + pos, "an-trap") ?
2966: buf->buf + pos : "br");
1.149 schwarze 2967: return ROFF_IGN;
1.47 schwarze 2968: }
2969:
2970: static enum rofferr
2971: roff_Dd(ROFF_ARGS)
2972: {
1.187 schwarze 2973: int mask;
2974: enum roff_tok t, te;
1.99 schwarze 2975:
1.187 schwarze 2976: switch (tok) {
2977: case ROFF_Dd:
2978: tok = MDOC_Dd;
2979: te = MDOC_MAX;
2980: if (r->format == 0)
2981: r->format = MPARSE_MDOC;
2982: mask = MPARSE_MDOC | MPARSE_QUICK;
2983: break;
2984: case ROFF_TH:
2985: tok = MAN_TH;
2986: te = MAN_MAX;
2987: if (r->format == 0)
2988: r->format = MPARSE_MAN;
2989: mask = MPARSE_QUICK;
2990: break;
2991: default:
2992: abort();
2993: }
2994: if ((r->options & mask) == 0)
2995: for (t = tok; t < te; t++)
2996: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 2997: return ROFF_CONT;
1.14 schwarze 2998: }
2999:
3000: static enum rofferr
1.27 schwarze 3001: roff_TE(ROFF_ARGS)
3002: {
1.193 schwarze 3003: if (r->tbl == NULL) {
1.94 schwarze 3004: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3005: ln, ppos, "TE");
1.193 schwarze 3006: return ROFF_IGN;
3007: }
3008: if (tbl_end(r->tbl) == 0) {
3009: r->tbl = NULL;
1.130 schwarze 3010: free(buf->buf);
3011: buf->buf = mandoc_strdup(".sp");
3012: buf->sz = 4;
1.201 schwarze 3013: *offs = 0;
1.149 schwarze 3014: return ROFF_REPARSE;
1.130 schwarze 3015: }
1.193 schwarze 3016: r->tbl = NULL;
1.149 schwarze 3017: return ROFF_IGN;
1.27 schwarze 3018: }
3019:
3020: static enum rofferr
3021: roff_T_(ROFF_ARGS)
3022: {
3023:
3024: if (NULL == r->tbl)
1.94 schwarze 3025: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3026: ln, ppos, "T&");
1.27 schwarze 3027: else
1.168 schwarze 3028: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 3029:
1.149 schwarze 3030: return ROFF_IGN;
1.27 schwarze 3031: }
3032:
1.102 schwarze 3033: /*
3034: * Handle in-line equation delimiters.
3035: */
3036: static enum rofferr
1.110 schwarze 3037: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 3038: {
1.105 schwarze 3039: char *cp1, *cp2;
3040: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 3041:
1.102 schwarze 3042: /*
3043: * Outside equations, look for an opening delimiter.
3044: * If we are inside an equation, we already know it is
3045: * in-line, or this function wouldn't have been called;
3046: * so look for a closing delimiter.
3047: */
3048:
1.110 schwarze 3049: cp1 = buf->buf + pos;
1.102 schwarze 3050: cp2 = strchr(cp1, r->eqn == NULL ?
3051: r->last_eqn->odelim : r->last_eqn->cdelim);
3052: if (cp2 == NULL)
1.149 schwarze 3053: return ROFF_CONT;
1.102 schwarze 3054:
1.105 schwarze 3055: *cp2++ = '\0';
3056: bef_pr = bef_nl = aft_nl = aft_pr = "";
3057:
3058: /* Handle preceding text, protecting whitespace. */
3059:
1.110 schwarze 3060: if (*buf->buf != '\0') {
1.105 schwarze 3061: if (r->eqn == NULL)
3062: bef_pr = "\\&";
3063: bef_nl = "\n";
3064: }
3065:
3066: /*
3067: * Prepare replacing the delimiter with an equation macro
3068: * and drop leading white space from the equation.
3069: */
1.102 schwarze 3070:
1.105 schwarze 3071: if (r->eqn == NULL) {
3072: while (*cp2 == ' ')
3073: cp2++;
3074: mac = ".EQ";
3075: } else
3076: mac = ".EN";
3077:
3078: /* Handle following text, protecting whitespace. */
3079:
3080: if (*cp2 != '\0') {
3081: aft_nl = "\n";
3082: if (r->eqn != NULL)
3083: aft_pr = "\\&";
3084: }
3085:
3086: /* Do the actual replacement. */
3087:
1.110 schwarze 3088: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 3089: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 3090: free(buf->buf);
3091: buf->buf = cp1;
1.102 schwarze 3092:
3093: /* Toggle the in-line state of the eqn subsystem. */
3094:
3095: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 3096: return ROFF_REPARSE;
1.41 schwarze 3097: }
3098:
1.107 schwarze 3099: static enum rofferr
3100: roff_EQ(ROFF_ARGS)
1.32 schwarze 3101: {
1.191 schwarze 3102: struct roff_node *n;
3103:
1.194 schwarze 3104: if (r->man->macroset == MACROSET_MAN)
3105: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 3106: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3107: if (ln > r->man->last->line)
3108: n->flags |= NODE_LINE;
3109: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
3110: n->eqn->expectargs = UINT_MAX;
3111: roff_node_append(r->man, n);
3112: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 3113:
1.110 schwarze 3114: assert(r->eqn == NULL);
1.191 schwarze 3115: if (r->last_eqn == NULL)
3116: r->last_eqn = eqn_alloc(r->parse);
3117: else
3118: eqn_reset(r->last_eqn);
3119: r->eqn = r->last_eqn;
3120: r->eqn->node = n;
1.41 schwarze 3121:
1.110 schwarze 3122: if (buf->buf[pos] != '\0')
1.107 schwarze 3123: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 3124: ".EQ %s", buf->buf + pos);
1.41 schwarze 3125:
1.149 schwarze 3126: return ROFF_IGN;
1.32 schwarze 3127: }
3128:
3129: static enum rofferr
3130: roff_EN(ROFF_ARGS)
3131: {
1.191 schwarze 3132: if (r->eqn != NULL) {
3133: eqn_parse(r->eqn);
3134: r->eqn = NULL;
3135: } else
3136: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
3137: if (buf->buf[pos] != '\0')
3138: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3139: "EN %s", buf->buf + pos);
1.149 schwarze 3140: return ROFF_IGN;
1.32 schwarze 3141: }
3142:
3143: static enum rofferr
1.27 schwarze 3144: roff_TS(ROFF_ARGS)
3145: {
1.193 schwarze 3146: if (r->tbl != NULL) {
1.94 schwarze 3147: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
3148: ln, ppos, "TS breaks TS");
1.193 schwarze 3149: tbl_end(r->tbl);
1.27 schwarze 3150: }
1.193 schwarze 3151: r->tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 3152: if (r->last_tbl)
1.193 schwarze 3153: r->last_tbl->next = r->tbl;
1.27 schwarze 3154: else
1.193 schwarze 3155: r->first_tbl = r->tbl;
3156: r->last_tbl = r->tbl;
1.169 schwarze 3157: return ROFF_IGN;
3158: }
3159:
3160: static enum rofferr
3161: roff_onearg(ROFF_ARGS)
3162: {
3163: struct roff_node *n;
3164: char *cp;
1.177 schwarze 3165: int npos;
1.169 schwarze 3166:
1.174 schwarze 3167: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 3168: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3169: tok == ROFF_ti))
1.174 schwarze 3170: man_breakscope(r->man, tok);
3171:
1.181 schwarze 3172: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 3173: r->man->last = roffce_node;
3174: r->man->next = ROFF_NEXT_SIBLING;
3175: }
3176:
1.169 schwarze 3177: roff_elem_alloc(r->man, ln, ppos, tok);
3178: n = r->man->last;
3179:
3180: cp = buf->buf + pos;
3181: if (*cp != '\0') {
3182: while (*cp != '\0' && *cp != ' ')
3183: cp++;
3184: while (*cp == ' ')
3185: *cp++ = '\0';
3186: if (*cp != '\0')
3187: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
3188: r->parse, ln, cp - buf->buf,
3189: "%s ... %s", roff_name[tok], cp);
3190: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 3191: }
3192:
1.181 schwarze 3193: if (tok == ROFF_ce || tok == ROFF_rj) {
3194: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 3195: roff_word_alloc(r->man, ln, pos, "1");
3196: r->man->last->flags |= NODE_NOSRC;
3197: }
3198: npos = 0;
3199: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3200: &roffce_lines, 0) == 0) {
3201: mandoc_vmsg(MANDOCERR_CE_NONUM,
3202: r->parse, ln, pos, "ce %s", buf->buf + pos);
3203: roffce_lines = 1;
3204: }
3205: if (roffce_lines < 1) {
3206: r->man->last = r->man->last->parent;
3207: roffce_node = NULL;
3208: roffce_lines = 0;
3209: } else
3210: roffce_node = r->man->last->parent;
3211: } else {
3212: n->flags |= NODE_VALID | NODE_ENDED;
3213: r->man->last = n;
3214: }
3215: n->flags |= NODE_LINE;
1.172 schwarze 3216: r->man->next = ROFF_NEXT_SIBLING;
3217: return ROFF_IGN;
3218: }
3219:
3220: static enum rofferr
3221: roff_manyarg(ROFF_ARGS)
3222: {
3223: struct roff_node *n;
3224: char *sp, *ep;
3225:
3226: roff_elem_alloc(r->man, ln, ppos, tok);
3227: n = r->man->last;
3228:
3229: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3230: while (*ep != '\0' && *ep != ' ')
3231: ep++;
3232: while (*ep == ' ')
3233: *ep++ = '\0';
3234: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3235: }
3236:
3237: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3238: r->man->last = n;
3239: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3240: return ROFF_IGN;
1.123 schwarze 3241: }
3242:
3243: static enum rofferr
1.183 schwarze 3244: roff_als(ROFF_ARGS)
3245: {
3246: char *oldn, *newn, *end, *value;
3247: size_t oldsz, newsz, valsz;
3248:
3249: newn = oldn = buf->buf + pos;
3250: if (*newn == '\0')
3251: return ROFF_IGN;
3252:
3253: newsz = roff_getname(r, &oldn, ln, pos);
3254: if (newn[newsz] == '\\' || *oldn == '\0')
3255: return ROFF_IGN;
3256:
3257: end = oldn;
3258: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3259: if (oldsz == 0)
3260: return ROFF_IGN;
3261:
1.210 schwarze 3262: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.187 schwarze 3263: (int)oldsz, oldn);
1.183 schwarze 3264: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3265: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3266: free(value);
3267: return ROFF_IGN;
3268: }
3269:
3270: static enum rofferr
1.168 schwarze 3271: roff_br(ROFF_ARGS)
1.123 schwarze 3272: {
1.174 schwarze 3273: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3274: man_breakscope(r->man, ROFF_br);
1.168 schwarze 3275: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3276: if (buf->buf[pos] != '\0')
3277: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3278: "%s %s", roff_name[tok], buf->buf + pos);
3279: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3280: r->man->next = ROFF_NEXT_SIBLING;
3281: return ROFF_IGN;
1.27 schwarze 3282: }
3283:
3284: static enum rofferr
1.48 schwarze 3285: roff_cc(ROFF_ARGS)
3286: {
3287: const char *p;
3288:
1.110 schwarze 3289: p = buf->buf + pos;
1.48 schwarze 3290:
1.110 schwarze 3291: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3292: r->control = '\0';
1.48 schwarze 3293:
1.110 schwarze 3294: if (*p != '\0')
1.132 schwarze 3295: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3296: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3297:
1.149 schwarze 3298: return ROFF_IGN;
1.48 schwarze 3299: }
3300:
3301: static enum rofferr
1.175 schwarze 3302: roff_ec(ROFF_ARGS)
3303: {
3304: const char *p;
3305:
3306: p = buf->buf + pos;
3307: if (*p == '\0')
3308: r->escape = '\\';
3309: else {
3310: r->escape = *p;
3311: if (*++p != '\0')
3312: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3313: ln, p - buf->buf, "ec ... %s", p);
3314: }
3315: return ROFF_IGN;
3316: }
3317:
3318: static enum rofferr
3319: roff_eo(ROFF_ARGS)
3320: {
3321: r->escape = '\0';
3322: if (buf->buf[pos] != '\0')
3323: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3324: ln, pos, "eo %s", buf->buf + pos);
3325: return ROFF_IGN;
1.202 schwarze 3326: }
3327:
3328: static enum rofferr
3329: roff_nop(ROFF_ARGS)
3330: {
3331: while (buf->buf[pos] == ' ')
3332: pos++;
3333: *offs = pos;
3334: return ROFF_RERUN;
1.175 schwarze 3335: }
3336:
3337: static enum rofferr
1.42 schwarze 3338: roff_tr(ROFF_ARGS)
3339: {
3340: const char *p, *first, *second;
3341: size_t fsz, ssz;
3342: enum mandoc_esc esc;
3343:
1.110 schwarze 3344: p = buf->buf + pos;
1.42 schwarze 3345:
1.110 schwarze 3346: if (*p == '\0') {
1.132 schwarze 3347: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 3348: return ROFF_IGN;
1.42 schwarze 3349: }
3350:
1.110 schwarze 3351: while (*p != '\0') {
1.42 schwarze 3352: fsz = ssz = 1;
3353:
3354: first = p++;
1.110 schwarze 3355: if (*first == '\\') {
1.42 schwarze 3356: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3357: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3358: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3359: ln, (int)(p - buf->buf), first);
1.149 schwarze 3360: return ROFF_IGN;
1.42 schwarze 3361: }
3362: fsz = (size_t)(p - first);
3363: }
3364:
3365: second = p++;
1.110 schwarze 3366: if (*second == '\\') {
1.42 schwarze 3367: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3368: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3369: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3370: ln, (int)(p - buf->buf), second);
1.149 schwarze 3371: return ROFF_IGN;
1.42 schwarze 3372: }
3373: ssz = (size_t)(p - second);
1.110 schwarze 3374: } else if (*second == '\0') {
1.132 schwarze 3375: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3376: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3377: second = " ";
3378: p--;
3379: }
3380:
3381: if (fsz > 1) {
1.80 schwarze 3382: roff_setstrn(&r->xmbtab, first, fsz,
3383: second, ssz, 0);
1.42 schwarze 3384: continue;
3385: }
3386:
1.110 schwarze 3387: if (r->xtab == NULL)
1.80 schwarze 3388: r->xtab = mandoc_calloc(128,
3389: sizeof(struct roffstr));
1.42 schwarze 3390:
3391: free(r->xtab[(int)*first].p);
3392: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3393: r->xtab[(int)*first].sz = ssz;
3394: }
3395:
1.149 schwarze 3396: return ROFF_IGN;
1.42 schwarze 3397: }
3398:
1.211 ! schwarze 3399: /*
! 3400: * Implementation of the .return request.
! 3401: * There is no need to call roff_userret() from here.
! 3402: * The read module will call that after rewinding the reader stack
! 3403: * to the place from where the current macro was called.
! 3404: */
! 3405: static enum rofferr
! 3406: roff_return(ROFF_ARGS)
! 3407: {
! 3408: if (r->mstackpos >= 0)
! 3409: return ROFF_USERRET;
! 3410:
! 3411: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "return");
! 3412: return ROFF_IGN;
! 3413: }
! 3414:
1.42 schwarze 3415: static enum rofferr
1.178 schwarze 3416: roff_rn(ROFF_ARGS)
3417: {
3418: const char *value;
3419: char *oldn, *newn, *end;
3420: size_t oldsz, newsz;
1.187 schwarze 3421: int deftype;
1.178 schwarze 3422:
3423: oldn = newn = buf->buf + pos;
3424: if (*oldn == '\0')
3425: return ROFF_IGN;
3426:
3427: oldsz = roff_getname(r, &newn, ln, pos);
3428: if (oldn[oldsz] == '\\' || *newn == '\0')
3429: return ROFF_IGN;
3430:
3431: end = newn;
3432: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3433: if (newsz == 0)
3434: return ROFF_IGN;
3435:
1.187 schwarze 3436: deftype = ROFFDEF_ANY;
3437: value = roff_getstrn(r, oldn, oldsz, &deftype);
3438: switch (deftype) {
3439: case ROFFDEF_USER:
1.178 schwarze 3440: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3441: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3442: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3443: break;
3444: case ROFFDEF_PRE:
3445: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3446: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3447: break;
3448: case ROFFDEF_REN:
1.178 schwarze 3449: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3450: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3451: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3452: break;
3453: case ROFFDEF_STD:
1.178 schwarze 3454: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3455: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3456: break;
3457: default:
3458: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3459: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3460: break;
3461: }
1.178 schwarze 3462: return ROFF_IGN;
3463: }
3464:
3465: static enum rofferr
1.211 ! schwarze 3466: roff_shift(ROFF_ARGS)
! 3467: {
! 3468: struct mctx *ctx;
! 3469: int levels, i;
! 3470:
! 3471: levels = 1;
! 3472: if (buf->buf[pos] != '\0' &&
! 3473: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
! 3474: mandoc_vmsg(MANDOCERR_CE_NONUM, r->parse,
! 3475: ln, pos, "shift %s", buf->buf + pos);
! 3476: levels = 1;
! 3477: }
! 3478: if (r->mstackpos < 0) {
! 3479: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "shift");
! 3480: return ROFF_IGN;
! 3481: }
! 3482: ctx = r->mstack + r->mstackpos;
! 3483: if (levels > ctx->argc) {
! 3484: mandoc_vmsg(MANDOCERR_SHIFT, r->parse,
! 3485: ln, pos, "%d, but max is %d", levels, ctx->argc);
! 3486: levels = ctx->argc;
! 3487: }
! 3488: if (levels == 0)
! 3489: return ROFF_IGN;
! 3490: for (i = 0; i < levels; i++)
! 3491: free(ctx->argv[i]);
! 3492: ctx->argc -= levels;
! 3493: for (i = 0; i < ctx->argc; i++)
! 3494: ctx->argv[i] = ctx->argv[i + levels];
! 3495: return ROFF_IGN;
! 3496: }
! 3497:
! 3498: static enum rofferr
1.14 schwarze 3499: roff_so(ROFF_ARGS)
3500: {
1.121 schwarze 3501: char *name, *cp;
1.15 schwarze 3502:
1.110 schwarze 3503: name = buf->buf + pos;
1.97 schwarze 3504: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3505:
1.22 schwarze 3506: /*
3507: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3508: * opening anything that's not in our cwd or anything beneath
3509: * it. Thus, explicitly disallow traversing up the file-system
3510: * or using absolute paths.
3511: */
3512:
1.110 schwarze 3513: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3514: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3515: ".so %s", name);
1.121 schwarze 3516: buf->sz = mandoc_asprintf(&cp,
3517: ".sp\nSee the file %s.\n.sp", name) + 1;
3518: free(buf->buf);
3519: buf->buf = cp;
3520: *offs = 0;
1.149 schwarze 3521: return ROFF_REPARSE;
1.14 schwarze 3522: }
3523:
3524: *offs = pos;
1.149 schwarze 3525: return ROFF_SO;
1.7 schwarze 3526: }
3527:
1.138 schwarze 3528: /* --- user defined strings and macros ------------------------------------ */
3529:
1.16 schwarze 3530: static enum rofferr
3531: roff_userdef(ROFF_ARGS)
1.12 schwarze 3532: {
1.211 ! schwarze 3533: struct mctx *ctx;
! 3534: char *arg, *ap, *dst, *src;
! 3535: size_t sz;
! 3536:
! 3537: /* Initialize a new macro stack context. */
! 3538:
! 3539: if (++r->mstackpos == r->mstacksz) {
! 3540: r->mstack = mandoc_recallocarray(r->mstack,
! 3541: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
! 3542: r->mstacksz += 8;
! 3543: }
! 3544: ctx = r->mstack + r->mstackpos;
! 3545: ctx->argsz = 0;
! 3546: ctx->argc = 0;
! 3547: ctx->argv = NULL;
! 3548:
! 3549: /*
! 3550: * Collect pointers to macro argument strings,
! 3551: * NUL-terminating them and escaping quotes.
! 3552: */
! 3553:
! 3554: src = buf->buf + pos;
! 3555: while (*src != '\0') {
! 3556: if (ctx->argc == ctx->argsz) {
! 3557: ctx->argsz += 8;
! 3558: ctx->argv = mandoc_reallocarray(ctx->argv,
! 3559: ctx->argsz, sizeof(*ctx->argv));
! 3560: }
! 3561: arg = mandoc_getarg(r->parse, &src, ln, &pos);
! 3562: sz = 1; /* For the terminating NUL. */
! 3563: for (ap = arg; *ap != '\0'; ap++)
! 3564: sz += *ap == '"' ? 4 : 1;
! 3565: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
! 3566: for (ap = arg; *ap != '\0'; ap++) {
! 3567: if (*ap == '"') {
! 3568: memcpy(dst, "\\(dq", 4);
! 3569: dst += 4;
! 3570: } else
! 3571: *dst++ = *ap;
1.16 schwarze 3572: }
1.211 ! schwarze 3573: *dst = '\0';
1.209 schwarze 3574: }
3575:
1.211 ! schwarze 3576: /* Replace the macro invocation by the macro definition. */
1.135 schwarze 3577:
1.110 schwarze 3578: free(buf->buf);
1.211 ! schwarze 3579: buf->buf = mandoc_strdup(r->current_string);
! 3580: buf->sz = strlen(buf->buf) + 1;
1.120 schwarze 3581: *offs = 0;
1.16 schwarze 3582:
1.149 schwarze 3583: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.211 ! schwarze 3584: ROFF_USERCALL : ROFF_APPEND;
1.12 schwarze 3585: }
1.28 schwarze 3586:
1.178 schwarze 3587: /*
3588: * Calling a high-level macro that was renamed with .rn.
3589: * r->current_string has already been set up by roff_parse().
3590: */
3591: static enum rofferr
3592: roff_renamed(ROFF_ARGS)
3593: {
3594: char *nbuf;
3595:
1.187 schwarze 3596: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3597: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3598: free(buf->buf);
3599: buf->buf = nbuf;
1.201 schwarze 3600: *offs = 0;
1.178 schwarze 3601: return ROFF_CONT;
3602: }
3603:
1.85 schwarze 3604: static size_t
1.28 schwarze 3605: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3606: {
3607: char *name, *cp;
1.85 schwarze 3608: size_t namesz;
1.28 schwarze 3609:
3610: name = *cpp;
3611: if ('\0' == *name)
1.149 schwarze 3612: return 0;
1.28 schwarze 3613:
1.85 schwarze 3614: /* Read until end of name and terminate it with NUL. */
3615: for (cp = name; 1; cp++) {
3616: if ('\0' == *cp || ' ' == *cp) {
3617: namesz = cp - name;
3618: break;
3619: }
1.28 schwarze 3620: if ('\\' != *cp)
3621: continue;
1.88 schwarze 3622: namesz = cp - name;
3623: if ('{' == cp[1] || '}' == cp[1])
3624: break;
1.28 schwarze 3625: cp++;
3626: if ('\\' == *cp)
3627: continue;
1.97 schwarze 3628: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3629: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3630: mandoc_escape((const char **)&cp, NULL, NULL);
3631: break;
1.28 schwarze 3632: }
3633:
3634: /* Read past spaces. */
3635: while (' ' == *cp)
3636: cp++;
3637:
3638: *cpp = cp;
1.149 schwarze 3639: return namesz;
1.28 schwarze 3640: }
3641:
1.16 schwarze 3642: /*
3643: * Store *string into the user-defined string called *name.
3644: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3645: * append == 0: replace mode
3646: * append == 1: single-line append mode
3647: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3648: */
1.8 schwarze 3649: static void
1.16 schwarze 3650: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3651: int append)
1.7 schwarze 3652: {
1.187 schwarze 3653: size_t namesz;
1.42 schwarze 3654:
1.187 schwarze 3655: namesz = strlen(name);
3656: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3657: string ? strlen(string) : 0, append);
1.187 schwarze 3658: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3659: }
3660:
3661: static void
3662: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3663: const char *string, size_t stringsz, int append)
1.42 schwarze 3664: {
3665: struct roffkv *n;
3666: char *c;
3667: int i;
3668: size_t oldch, newch;
1.7 schwarze 3669:
1.16 schwarze 3670: /* Search for an existing string with the same name. */
1.42 schwarze 3671: n = *r;
3672:
1.84 schwarze 3673: while (n && (namesz != n->key.sz ||
3674: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3675: n = n->next;
1.8 schwarze 3676:
3677: if (NULL == n) {
1.16 schwarze 3678: /* Create a new string table entry. */
1.42 schwarze 3679: n = mandoc_malloc(sizeof(struct roffkv));
3680: n->key.p = mandoc_strndup(name, namesz);
3681: n->key.sz = namesz;
3682: n->val.p = NULL;
3683: n->val.sz = 0;
3684: n->next = *r;
3685: *r = n;
1.66 schwarze 3686: } else if (0 == append) {
1.42 schwarze 3687: free(n->val.p);
3688: n->val.p = NULL;
3689: n->val.sz = 0;
1.16 schwarze 3690: }
3691:
3692: if (NULL == string)
3693: return;
3694:
3695: /*
3696: * One additional byte for the '\n' in multiline mode,
3697: * and one for the terminating '\0'.
3698: */
1.66 schwarze 3699: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3700:
3701: if (NULL == n->val.p) {
3702: n->val.p = mandoc_malloc(newch);
3703: *n->val.p = '\0';
1.16 schwarze 3704: oldch = 0;
3705: } else {
1.42 schwarze 3706: oldch = n->val.sz;
3707: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3708: }
3709:
3710: /* Skip existing content in the destination buffer. */
1.42 schwarze 3711: c = n->val.p + (int)oldch;
1.16 schwarze 3712:
3713: /* Append new content to the destination buffer. */
1.42 schwarze 3714: i = 0;
3715: while (i < (int)stringsz) {
1.16 schwarze 3716: /*
3717: * Rudimentary roff copy mode:
3718: * Handle escaped backslashes.
3719: */
1.42 schwarze 3720: if ('\\' == string[i] && '\\' == string[i + 1])
3721: i++;
3722: *c++ = string[i++];
1.16 schwarze 3723: }
1.8 schwarze 3724:
1.16 schwarze 3725: /* Append terminating bytes. */
1.66 schwarze 3726: if (1 < append)
1.16 schwarze 3727: *c++ = '\n';
1.42 schwarze 3728:
1.16 schwarze 3729: *c = '\0';
1.42 schwarze 3730: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3731: }
3732:
1.8 schwarze 3733: static const char *
1.197 schwarze 3734: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 3735: int *deftype)
1.7 schwarze 3736: {
1.187 schwarze 3737: const struct roffkv *n;
1.197 schwarze 3738: int found, i;
1.187 schwarze 3739: enum roff_tok tok;
3740:
1.197 schwarze 3741: found = 0;
3742: for (n = r->strtab; n != NULL; n = n->next) {
3743: if (strncmp(name, n->key.p, len) != 0 ||
3744: n->key.p[len] != '\0' || n->val.p == NULL)
3745: continue;
3746: if (*deftype & ROFFDEF_USER) {
3747: *deftype = ROFFDEF_USER;
3748: return n->val.p;
3749: } else {
3750: found = 1;
3751: break;
3752: }
3753: }
3754: for (n = r->rentab; n != NULL; n = n->next) {
3755: if (strncmp(name, n->key.p, len) != 0 ||
3756: n->key.p[len] != '\0' || n->val.p == NULL)
3757: continue;
3758: if (*deftype & ROFFDEF_REN) {
3759: *deftype = ROFFDEF_REN;
3760: return n->val.p;
3761: } else {
3762: found = 1;
3763: break;
1.187 schwarze 3764: }
3765: }
1.197 schwarze 3766: for (i = 0; i < PREDEFS_MAX; i++) {
3767: if (strncmp(name, predefs[i].name, len) != 0 ||
3768: predefs[i].name[len] != '\0')
3769: continue;
3770: if (*deftype & ROFFDEF_PRE) {
3771: *deftype = ROFFDEF_PRE;
3772: return predefs[i].str;
3773: } else {
3774: found = 1;
3775: break;
1.187 schwarze 3776: }
3777: }
1.197 schwarze 3778: if (r->man->macroset != MACROSET_MAN) {
3779: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3780: if (strncmp(name, roff_name[tok], len) != 0 ||
3781: roff_name[tok][len] != '\0')
3782: continue;
3783: if (*deftype & ROFFDEF_STD) {
3784: *deftype = ROFFDEF_STD;
3785: return NULL;
3786: } else {
3787: found = 1;
3788: break;
1.187 schwarze 3789: }
3790: }
3791: }
1.197 schwarze 3792: if (r->man->macroset != MACROSET_MDOC) {
3793: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3794: if (strncmp(name, roff_name[tok], len) != 0 ||
3795: roff_name[tok][len] != '\0')
3796: continue;
3797: if (*deftype & ROFFDEF_STD) {
3798: *deftype = ROFFDEF_STD;
3799: return NULL;
3800: } else {
3801: found = 1;
3802: break;
1.187 schwarze 3803: }
3804: }
1.197 schwarze 3805: }
3806:
3807: if (found == 0 && *deftype != ROFFDEF_ANY) {
3808: if (*deftype & ROFFDEF_REN) {
3809: /*
3810: * This might still be a request,
3811: * so do not treat it as undefined yet.
3812: */
3813: *deftype = ROFFDEF_UNDEF;
3814: return NULL;
1.187 schwarze 3815: }
1.197 schwarze 3816:
3817: /* Using an undefined string defines it to be empty. */
3818:
3819: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3820: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 3821: }
1.197 schwarze 3822:
1.187 schwarze 3823: *deftype = 0;
1.149 schwarze 3824: return NULL;
1.7 schwarze 3825: }
3826:
1.8 schwarze 3827: static void
1.42 schwarze 3828: roff_freestr(struct roffkv *r)
1.7 schwarze 3829: {
1.42 schwarze 3830: struct roffkv *n, *nn;
1.7 schwarze 3831:
1.42 schwarze 3832: for (n = r; n; n = nn) {
3833: free(n->key.p);
3834: free(n->val.p);
1.7 schwarze 3835: nn = n->next;
3836: free(n);
3837: }
1.27 schwarze 3838: }
1.138 schwarze 3839:
3840: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 3841:
3842: /*
3843: * Duplicate an input string, making the appropriate character
3844: * conversations (as stipulated by `tr') along the way.
3845: * Returns a heap-allocated string with all the replacements made.
3846: */
3847: char *
3848: roff_strdup(const struct roff *r, const char *p)
3849: {
3850: const struct roffkv *cp;
3851: char *res;
3852: const char *pp;
3853: size_t ssz, sz;
3854: enum mandoc_esc esc;
3855:
3856: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3857: return mandoc_strdup(p);
1.42 schwarze 3858: else if ('\0' == *p)
1.149 schwarze 3859: return mandoc_strdup("");
1.42 schwarze 3860:
3861: /*
3862: * Step through each character looking for term matches
3863: * (remember that a `tr' can be invoked with an escape, which is
3864: * a glyph but the escape is multi-character).
3865: * We only do this if the character hash has been initialised
3866: * and the string is >0 length.
3867: */
3868:
3869: res = NULL;
3870: ssz = 0;
3871:
3872: while ('\0' != *p) {
1.161 schwarze 3873: assert((unsigned int)*p < 128);
3874: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3875: sz = r->xtab[(int)*p].sz;
3876: res = mandoc_realloc(res, ssz + sz + 1);
3877: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3878: ssz += sz;
3879: p++;
3880: continue;
3881: } else if ('\\' != *p) {
3882: res = mandoc_realloc(res, ssz + 2);
3883: res[ssz++] = *p++;
3884: continue;
3885: }
3886:
3887: /* Search for term matches. */
3888: for (cp = r->xmbtab; cp; cp = cp->next)
3889: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3890: break;
3891:
3892: if (NULL != cp) {
3893: /*
3894: * A match has been found.
3895: * Append the match to the array and move
3896: * forward by its keysize.
3897: */
1.80 schwarze 3898: res = mandoc_realloc(res,
3899: ssz + cp->val.sz + 1);
1.42 schwarze 3900: memcpy(res + ssz, cp->val.p, cp->val.sz);
3901: ssz += cp->val.sz;
3902: p += (int)cp->key.sz;
3903: continue;
3904: }
3905:
3906: /*
3907: * Handle escapes carefully: we need to copy
3908: * over just the escape itself, or else we might
3909: * do replacements within the escape itself.
3910: * Make sure to pass along the bogus string.
3911: */
3912: pp = p++;
3913: esc = mandoc_escape(&p, NULL, NULL);
3914: if (ESCAPE_ERROR == esc) {
3915: sz = strlen(pp);
3916: res = mandoc_realloc(res, ssz + sz + 1);
3917: memcpy(res + ssz, pp, sz);
3918: break;
3919: }
1.80 schwarze 3920: /*
3921: * We bail out on bad escapes.
1.42 schwarze 3922: * No need to warn: we already did so when
3923: * roff_res() was called.
3924: */
3925: sz = (int)(p - pp);
3926: res = mandoc_realloc(res, ssz + sz + 1);
3927: memcpy(res + ssz, pp, sz);
3928: ssz += sz;
3929: }
3930:
3931: res[(int)ssz] = '\0';
1.149 schwarze 3932: return res;
1.99 schwarze 3933: }
3934:
3935: int
3936: roff_getformat(const struct roff *r)
3937: {
3938:
1.149 schwarze 3939: return r->format;
1.48 schwarze 3940: }
3941:
3942: /*
1.80 schwarze 3943: * Find out whether a line is a macro line or not.
1.48 schwarze 3944: * If it is, adjust the current position and return one; if it isn't,
3945: * return zero and don't change the current position.
3946: * If the control character has been set with `.cc', then let that grain
3947: * precedence.
3948: * This is slighly contrary to groff, where using the non-breaking
3949: * control character when `cc' has been invoked will cause the
3950: * non-breaking macro contents to be printed verbatim.
3951: */
3952: int
3953: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3954: {
3955: int pos;
3956:
3957: pos = *ppos;
3958:
1.175 schwarze 3959: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 3960: pos++;
1.175 schwarze 3961: else if (r->control != '\0')
1.149 schwarze 3962: return 0;
1.48 schwarze 3963: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3964: pos += 2;
3965: else if ('.' == cp[pos] || '\'' == cp[pos])
3966: pos++;
3967: else
1.149 schwarze 3968: return 0;
1.48 schwarze 3969:
3970: while (' ' == cp[pos] || '\t' == cp[pos])
3971: pos++;
3972:
3973: *ppos = pos;
1.149 schwarze 3974: return 1;
1.1 schwarze 3975: }
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