Annotation of src/usr.bin/mandoc/roff.c, Revision 1.166
1.166 ! schwarze 1: /* $OpenBSD: roff.c,v 1.165 2017/03/09 15:27:52 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.159 schwarze 4: * Copyright (c) 2010-2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.51 schwarze 23: #include <stdio.h>
1.1 schwarze 24: #include <stdlib.h>
25: #include <string.h>
26:
27: #include "mandoc.h"
1.74 schwarze 28: #include "mandoc_aux.h"
1.137 schwarze 29: #include "roff.h"
1.98 daniel 30: #include "libmandoc.h"
1.138 schwarze 31: #include "roff_int.h"
1.27 schwarze 32: #include "libroff.h"
1.2 schwarze 33:
1.43 schwarze 34: /* Maximum number of string expansions per line, to break infinite loops. */
35: #define EXPAND_LIMIT 1000
36:
1.138 schwarze 37: /* --- data types --------------------------------------------------------- */
38:
1.41 schwarze 39: /*
1.42 schwarze 40: * An incredibly-simple string buffer.
41: */
1.8 schwarze 42: struct roffstr {
1.42 schwarze 43: char *p; /* nil-terminated buffer */
44: size_t sz; /* saved strlen(p) */
45: };
46:
47: /*
48: * A key-value roffstr pair as part of a singly-linked list.
49: */
50: struct roffkv {
51: struct roffstr key;
52: struct roffstr val;
53: struct roffkv *next; /* next in list */
1.8 schwarze 54: };
55:
1.52 schwarze 56: /*
57: * A single number register as part of a singly-linked list.
58: */
59: struct roffreg {
60: struct roffstr key;
1.53 schwarze 61: int val;
1.52 schwarze 62: struct roffreg *next;
63: };
64:
1.1 schwarze 65: struct roff {
1.35 schwarze 66: struct mparse *parse; /* parse point */
1.1 schwarze 67: struct roffnode *last; /* leaf of stack */
1.96 schwarze 68: int *rstack; /* stack of inverted `ie' values */
1.52 schwarze 69: struct roffreg *regtab; /* number registers */
1.42 schwarze 70: struct roffkv *strtab; /* user-defined strings & macros */
71: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
72: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 73: const char *current_string; /* value of last called user macro */
1.27 schwarze 74: struct tbl_node *first_tbl; /* first table parsed */
75: struct tbl_node *last_tbl; /* last table parsed */
76: struct tbl_node *tbl; /* current table being parsed */
1.32 schwarze 77: struct eqn_node *last_eqn; /* last equation parsed */
78: struct eqn_node *first_eqn; /* first equation parsed */
79: struct eqn_node *eqn; /* current equation being parsed */
1.102 schwarze 80: int eqn_inline; /* current equation is inline */
1.96 schwarze 81: int options; /* parse options */
82: int rstacksz; /* current size limit of rstack */
83: int rstackpos; /* position in rstack */
1.99 schwarze 84: int format; /* current file in mdoc or man format */
1.145 schwarze 85: int argc; /* number of args of the last macro */
1.96 schwarze 86: char control; /* control character */
1.1 schwarze 87: };
88:
89: struct roffnode {
1.166 ! schwarze 90: enum roff_tok tok; /* type of node */
1.1 schwarze 91: struct roffnode *parent; /* up one in stack */
92: int line; /* parse line */
93: int col; /* parse col */
1.16 schwarze 94: char *name; /* node name, e.g. macro name */
1.2 schwarze 95: char *end; /* end-rules: custom token */
96: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 97: int rule; /* current evaluation rule */
1.1 schwarze 98: };
99:
100: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 ! schwarze 101: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 102: struct buf *buf, /* input buffer */ \
1.1 schwarze 103: int ln, /* parse line */ \
1.2 schwarze 104: int ppos, /* original pos in buffer */ \
105: int pos, /* current pos in buffer */ \
106: int *offs /* reset offset of buffer data */
1.1 schwarze 107:
108: typedef enum rofferr (*roffproc)(ROFF_ARGS);
109:
110: struct roffmac {
111: const char *name; /* macro name */
1.2 schwarze 112: roffproc proc; /* process new macro */
113: roffproc text; /* process as child text of macro */
114: roffproc sub; /* process as child of macro */
115: int flags;
116: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.3 schwarze 117: struct roffmac *next;
1.1 schwarze 118: };
119:
1.37 schwarze 120: struct predef {
121: const char *name; /* predefined input name */
122: const char *str; /* replacement symbol */
123: };
124:
125: #define PREDEF(__name, __str) \
126: { (__name), (__str) },
127:
1.138 schwarze 128: /* --- function prototypes ------------------------------------------------ */
129:
1.166 ! schwarze 130: static enum roff_tok roffhash_find(const char *, size_t);
1.42 schwarze 131: static void roffhash_init(void);
132: static void roffnode_cleanscope(struct roff *);
133: static void roffnode_pop(struct roff *);
1.166 ! schwarze 134: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 135: const char *, int, int);
1.2 schwarze 136: static enum rofferr roff_block(ROFF_ARGS);
137: static enum rofferr roff_block_text(ROFF_ARGS);
138: static enum rofferr roff_block_sub(ROFF_ARGS);
1.123 schwarze 139: static enum rofferr roff_brp(ROFF_ARGS);
1.2 schwarze 140: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 141: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 142: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 143: static enum rofferr roff_cond(ROFF_ARGS);
144: static enum rofferr roff_cond_text(ROFF_ARGS);
145: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 146: static enum rofferr roff_ds(ROFF_ARGS);
1.110 schwarze 147: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 148: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 149: static int roff_evalnum(struct roff *, int,
150: const char *, int *, int *, int);
151: static int roff_evalpar(struct roff *, int,
1.133 schwarze 152: const char *, int *, int *, int);
1.71 schwarze 153: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 154: static void roff_free1(struct roff *);
1.52 schwarze 155: static void roff_freereg(struct roffreg *);
1.42 schwarze 156: static void roff_freestr(struct roffkv *);
1.85 schwarze 157: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 158: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 159: static int roff_getop(const char *, int *, char *);
1.53 schwarze 160: static int roff_getregn(const struct roff *,
161: const char *, size_t);
1.145 schwarze 162: static int roff_getregro(const struct roff *,
163: const char *name);
1.80 schwarze 164: static const char *roff_getstrn(const struct roff *,
1.8 schwarze 165: const char *, size_t);
1.143 schwarze 166: static int roff_hasregn(const struct roff *,
167: const char *, size_t);
1.123 schwarze 168: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 169: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 170: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 171: static void roff_man_alloc1(struct roff_man *);
172: static void roff_man_free1(struct roff_man *);
1.6 schwarze 173: static enum rofferr roff_nr(ROFF_ARGS);
1.166 ! schwarze 174: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 175: int, int);
1.110 schwarze 176: static enum rofferr roff_parsetext(struct buf *, int, int *);
177: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 178: static enum rofferr roff_rm(ROFF_ARGS);
1.76 schwarze 179: static enum rofferr roff_rr(ROFF_ARGS);
1.8 schwarze 180: static void roff_setstr(struct roff *,
1.16 schwarze 181: const char *, const char *, int);
1.80 schwarze 182: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 183: size_t, const char *, size_t, int);
1.14 schwarze 184: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 185: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 186: static enum rofferr roff_Dd(ROFF_ARGS);
187: static enum rofferr roff_TH(ROFF_ARGS);
1.27 schwarze 188: static enum rofferr roff_TE(ROFF_ARGS);
189: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 190: static enum rofferr roff_EQ(ROFF_ARGS);
191: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 192: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 193: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 194: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 195:
1.138 schwarze 196: /* --- constant data ------------------------------------------------------ */
197:
1.42 schwarze 198: /* See roffhash_find() */
1.3 schwarze 199:
200: #define ASCII_HI 126
201: #define ASCII_LO 33
202: #define HASHWIDTH (ASCII_HI - ASCII_LO + 1)
203:
1.133 schwarze 204: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
205: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
206:
1.166 ! schwarze 207: const char *__roff_name[MAN_MAX + 1] = {
! 208: "ab", "ad", "af", "aln",
! 209: "als", "am", "am1", "ami",
! 210: "ami1", "as", "as1", "asciify",
! 211: "backtrace", "bd", "bleedat", "blm",
! 212: "box", "boxa", "bp", "BP",
! 213: "break", "breakchar", "brnl", "brp",
! 214: "brpnl", "c2", "cc", "ce",
! 215: "cf", "cflags", "ch", "char",
! 216: "chop", "class", "close", "CL",
! 217: "color", "composite", "continue", "cp",
! 218: "cropat", "cs", "cu", "da",
! 219: "dch", "Dd", "de", "de1",
! 220: "defcolor", "dei", "dei1", "device",
! 221: "devicem", "di", "do", "ds",
! 222: "ds1", "dwh", "dt", "ec",
! 223: "ecr", "ecs", "el", "em",
! 224: "EN", "eo", "EP", "EQ",
! 225: "errprint", "ev", "evc", "ex",
! 226: "fallback", "fam", "fc", "fchar",
! 227: "fcolor", "fdeferlig", "feature", "fkern",
! 228: "fl", "flig", "fp", "fps",
! 229: "fschar", "fspacewidth", "fspecial", "ftr",
! 230: "fzoom", "gcolor", "hc", "hcode",
! 231: "hidechar", "hla", "hlm", "hpf",
! 232: "hpfa", "hpfcode", "hw", "hy",
! 233: "hylang", "hylen", "hym", "hypp",
! 234: "hys", "ie", "if", "ig",
! 235: "index", "it", "itc", "IX",
! 236: "kern", "kernafter", "kernbefore", "kernpair",
! 237: "lc", "lc_ctype", "lds", "length",
! 238: "letadj", "lf", "lg", "lhang",
! 239: "linetabs", "lnr", "lnrf", "lpfx",
! 240: "ls", "lsm", "lt", "mc",
! 241: "mediasize", "minss", "mk", "mso",
! 242: "na", "ne", "nh", "nhychar",
! 243: "nm", "nn", "nop", "nr",
! 244: "nrf", "nroff", "ns", "nx",
! 245: "open", "opena", "os", "output",
! 246: "padj", "papersize", "pc", "pev",
! 247: "pi", "PI", "pl", "pm",
! 248: "pn", "pnr", "po", "ps",
! 249: "psbb", "pshape", "pso", "ptr",
! 250: "pvs", "rchar", "rd", "recursionlimit",
! 251: "return", "rfschar", "rhang", "rj",
! 252: "rm", "rn", "rnn", "rr",
! 253: "rs", "rt", "schar", "sentchar",
! 254: "shc", "shift", "sizes", "so",
! 255: "spacewidth", "special", "spreadwarn", "ss",
! 256: "sty", "substring", "sv", "sy",
! 257: "T&", "ta", "tc", "TE",
! 258: "TH", "ti", "tkf", "tl",
! 259: "tm", "tm1", "tmc", "tr",
! 260: "track", "transchar", "trf", "trimat",
! 261: "trin", "trnt", "troff", "TS",
! 262: "uf", "ul", "unformat", "unwatch",
! 263: "unwatchn", "vpt", "vs", "warn",
! 264: "warnscale", "watch", "watchlength", "watchn",
! 265: "wh", "while", "write", "writec",
! 266: "writem", "xflag", ".", NULL,
! 267: "text",
! 268: "Dd", "Dt", "Os", "Sh",
! 269: "Ss", "Pp", "D1", "Dl",
! 270: "Bd", "Ed", "Bl", "El",
! 271: "It", "Ad", "An", "Ap",
! 272: "Ar", "Cd", "Cm", "Dv",
! 273: "Er", "Ev", "Ex", "Fa",
! 274: "Fd", "Fl", "Fn", "Ft",
! 275: "Ic", "In", "Li", "Nd",
! 276: "Nm", "Op", "Ot", "Pa",
! 277: "Rv", "St", "Va", "Vt",
! 278: "Xr", "%A", "%B", "%D",
! 279: "%I", "%J", "%N", "%O",
! 280: "%P", "%R", "%T", "%V",
! 281: "Ac", "Ao", "Aq", "At",
! 282: "Bc", "Bf", "Bo", "Bq",
! 283: "Bsx", "Bx", "Db", "Dc",
! 284: "Do", "Dq", "Ec", "Ef",
! 285: "Em", "Eo", "Fx", "Ms",
! 286: "No", "Ns", "Nx", "Ox",
! 287: "Pc", "Pf", "Po", "Pq",
! 288: "Qc", "Ql", "Qo", "Qq",
! 289: "Re", "Rs", "Sc", "So",
! 290: "Sq", "Sm", "Sx", "Sy",
! 291: "Tn", "Ux", "Xc", "Xo",
! 292: "Fo", "Fc", "Oo", "Oc",
! 293: "Bk", "Ek", "Bt", "Hf",
! 294: "Fr", "Ud", "Lb", "Lp",
! 295: "Lk", "Mt", "Brq", "Bro",
! 296: "Brc", "%C", "Es", "En",
! 297: "Dx", "%Q", "br", "sp",
! 298: "%U", "Ta", "ll", NULL,
! 299: "TH", "SH", "SS", "TP",
! 300: "LP", "PP", "P", "IP",
! 301: "HP", "SM", "SB", "BI",
! 302: "IB", "BR", "RB", "R",
! 303: "B", "I", "IR", "RI",
! 304: "br", "sp", "nf", "fi",
! 305: "RE", "RS", "DT", "UC",
! 306: "PD", "AT", "in", "ft",
! 307: "OP", "EX", "EE", "UR",
! 308: "UE", "ll", NULL
! 309: };
! 310: const char *const *roff_name = __roff_name;
! 311:
1.3 schwarze 312: static struct roffmac *hash[HASHWIDTH];
313:
1.166 ! schwarze 314: static struct roffmac roffs[TOKEN_NONE] = {
1.123 schwarze 315: { "ab", roff_unsupp, NULL, NULL, 0, NULL },
1.21 schwarze 316: { "ad", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 317: { "af", roff_line_ignore, NULL, NULL, 0, NULL },
318: { "aln", roff_unsupp, NULL, NULL, 0, NULL },
319: { "als", roff_unsupp, NULL, NULL, 0, NULL },
1.3 schwarze 320: { "am", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 321: { "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.3 schwarze 322: { "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 323: { "ami1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.66 schwarze 324: { "as", roff_ds, NULL, NULL, 0, NULL },
1.123 schwarze 325: { "as1", roff_ds, NULL, NULL, 0, NULL },
326: { "asciify", roff_unsupp, NULL, NULL, 0, NULL },
327: { "backtrace", roff_line_ignore, NULL, NULL, 0, NULL },
328: { "bd", roff_line_ignore, NULL, NULL, 0, NULL },
329: { "bleedat", roff_line_ignore, NULL, NULL, 0, NULL },
330: { "blm", roff_unsupp, NULL, NULL, 0, NULL },
331: { "box", roff_unsupp, NULL, NULL, 0, NULL },
332: { "boxa", roff_unsupp, NULL, NULL, 0, NULL },
333: { "bp", roff_line_ignore, NULL, NULL, 0, NULL },
334: { "BP", roff_unsupp, NULL, NULL, 0, NULL },
335: { "break", roff_unsupp, NULL, NULL, 0, NULL },
336: { "breakchar", roff_line_ignore, NULL, NULL, 0, NULL },
337: { "brnl", roff_line_ignore, NULL, NULL, 0, NULL },
338: { "brp", roff_brp, NULL, NULL, 0, NULL },
339: { "brpnl", roff_line_ignore, NULL, NULL, 0, NULL },
340: { "c2", roff_unsupp, NULL, NULL, 0, NULL },
1.48 schwarze 341: { "cc", roff_cc, NULL, NULL, 0, NULL },
1.67 schwarze 342: { "ce", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 343: { "cf", roff_insec, NULL, NULL, 0, NULL },
344: { "cflags", roff_line_ignore, NULL, NULL, 0, NULL },
345: { "ch", roff_line_ignore, NULL, NULL, 0, NULL },
346: { "char", roff_unsupp, NULL, NULL, 0, NULL },
347: { "chop", roff_unsupp, NULL, NULL, 0, NULL },
348: { "class", roff_line_ignore, NULL, NULL, 0, NULL },
349: { "close", roff_insec, NULL, NULL, 0, NULL },
350: { "CL", roff_unsupp, NULL, NULL, 0, NULL },
351: { "color", roff_line_ignore, NULL, NULL, 0, NULL },
352: { "composite", roff_unsupp, NULL, NULL, 0, NULL },
353: { "continue", roff_unsupp, NULL, NULL, 0, NULL },
354: { "cp", roff_line_ignore, NULL, NULL, 0, NULL },
355: { "cropat", roff_line_ignore, NULL, NULL, 0, NULL },
356: { "cs", roff_line_ignore, NULL, NULL, 0, NULL },
357: { "cu", roff_line_ignore, NULL, NULL, 0, NULL },
358: { "da", roff_unsupp, NULL, NULL, 0, NULL },
359: { "dch", roff_unsupp, NULL, NULL, 0, NULL },
360: { "Dd", roff_Dd, NULL, NULL, 0, NULL },
1.3 schwarze 361: { "de", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 362: { "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
363: { "defcolor", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 364: { "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 365: { "dei1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
366: { "device", roff_unsupp, NULL, NULL, 0, NULL },
367: { "devicem", roff_unsupp, NULL, NULL, 0, NULL },
368: { "di", roff_unsupp, NULL, NULL, 0, NULL },
369: { "do", roff_unsupp, NULL, NULL, 0, NULL },
1.7 schwarze 370: { "ds", roff_ds, NULL, NULL, 0, NULL },
1.123 schwarze 371: { "ds1", roff_ds, NULL, NULL, 0, NULL },
372: { "dwh", roff_unsupp, NULL, NULL, 0, NULL },
373: { "dt", roff_unsupp, NULL, NULL, 0, NULL },
374: { "ec", roff_unsupp, NULL, NULL, 0, NULL },
375: { "ecr", roff_unsupp, NULL, NULL, 0, NULL },
376: { "ecs", roff_unsupp, NULL, NULL, 0, NULL },
1.3 schwarze 377: { "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
1.123 schwarze 378: { "em", roff_unsupp, NULL, NULL, 0, NULL },
379: { "EN", roff_EN, NULL, NULL, 0, NULL },
380: { "eo", roff_unsupp, NULL, NULL, 0, NULL },
381: { "EP", roff_unsupp, NULL, NULL, 0, NULL },
382: { "EQ", roff_EQ, NULL, NULL, 0, NULL },
383: { "errprint", roff_line_ignore, NULL, NULL, 0, NULL },
384: { "ev", roff_unsupp, NULL, NULL, 0, NULL },
385: { "evc", roff_unsupp, NULL, NULL, 0, NULL },
386: { "ex", roff_unsupp, NULL, NULL, 0, NULL },
387: { "fallback", roff_line_ignore, NULL, NULL, 0, NULL },
1.58 schwarze 388: { "fam", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 389: { "fc", roff_unsupp, NULL, NULL, 0, NULL },
390: { "fchar", roff_unsupp, NULL, NULL, 0, NULL },
391: { "fcolor", roff_line_ignore, NULL, NULL, 0, NULL },
392: { "fdeferlig", roff_line_ignore, NULL, NULL, 0, NULL },
393: { "feature", roff_line_ignore, NULL, NULL, 0, NULL },
394: { "fkern", roff_line_ignore, NULL, NULL, 0, NULL },
395: { "fl", roff_line_ignore, NULL, NULL, 0, NULL },
396: { "flig", roff_line_ignore, NULL, NULL, 0, NULL },
397: { "fp", roff_line_ignore, NULL, NULL, 0, NULL },
398: { "fps", roff_line_ignore, NULL, NULL, 0, NULL },
399: { "fschar", roff_unsupp, NULL, NULL, 0, NULL },
400: { "fspacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
401: { "fspecial", roff_line_ignore, NULL, NULL, 0, NULL },
402: { "ftr", roff_line_ignore, NULL, NULL, 0, NULL },
403: { "fzoom", roff_line_ignore, NULL, NULL, 0, NULL },
404: { "gcolor", roff_line_ignore, NULL, NULL, 0, NULL },
405: { "hc", roff_line_ignore, NULL, NULL, 0, NULL },
406: { "hcode", roff_line_ignore, NULL, NULL, 0, NULL },
407: { "hidechar", roff_line_ignore, NULL, NULL, 0, NULL },
408: { "hla", roff_line_ignore, NULL, NULL, 0, NULL },
409: { "hlm", roff_line_ignore, NULL, NULL, 0, NULL },
410: { "hpf", roff_line_ignore, NULL, NULL, 0, NULL },
411: { "hpfa", roff_line_ignore, NULL, NULL, 0, NULL },
412: { "hpfcode", roff_line_ignore, NULL, NULL, 0, NULL },
1.59 schwarze 413: { "hw", roff_line_ignore, NULL, NULL, 0, NULL },
1.21 schwarze 414: { "hy", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 415: { "hylang", roff_line_ignore, NULL, NULL, 0, NULL },
416: { "hylen", roff_line_ignore, NULL, NULL, 0, NULL },
417: { "hym", roff_line_ignore, NULL, NULL, 0, NULL },
418: { "hypp", roff_line_ignore, NULL, NULL, 0, NULL },
419: { "hys", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 420: { "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
421: { "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
422: { "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 423: { "index", roff_unsupp, NULL, NULL, 0, NULL },
1.51 schwarze 424: { "it", roff_it, NULL, NULL, 0, NULL },
1.123 schwarze 425: { "itc", roff_unsupp, NULL, NULL, 0, NULL },
426: { "IX", roff_line_ignore, NULL, NULL, 0, NULL },
427: { "kern", roff_line_ignore, NULL, NULL, 0, NULL },
428: { "kernafter", roff_line_ignore, NULL, NULL, 0, NULL },
429: { "kernbefore", roff_line_ignore, NULL, NULL, 0, NULL },
430: { "kernpair", roff_line_ignore, NULL, NULL, 0, NULL },
431: { "lc", roff_unsupp, NULL, NULL, 0, NULL },
432: { "lc_ctype", roff_unsupp, NULL, NULL, 0, NULL },
433: { "lds", roff_unsupp, NULL, NULL, 0, NULL },
434: { "length", roff_unsupp, NULL, NULL, 0, NULL },
435: { "letadj", roff_line_ignore, NULL, NULL, 0, NULL },
436: { "lf", roff_insec, NULL, NULL, 0, NULL },
437: { "lg", roff_line_ignore, NULL, NULL, 0, NULL },
438: { "lhang", roff_line_ignore, NULL, NULL, 0, NULL },
439: { "linetabs", roff_unsupp, NULL, NULL, 0, NULL },
440: { "lnr", roff_unsupp, NULL, NULL, 0, NULL },
441: { "lnrf", roff_unsupp, NULL, NULL, 0, NULL },
442: { "lpfx", roff_unsupp, NULL, NULL, 0, NULL },
443: { "ls", roff_line_ignore, NULL, NULL, 0, NULL },
444: { "lsm", roff_unsupp, NULL, NULL, 0, NULL },
445: { "lt", roff_line_ignore, NULL, NULL, 0, NULL },
446: { "mc", roff_line_ignore, NULL, NULL, 0, NULL },
447: { "mediasize", roff_line_ignore, NULL, NULL, 0, NULL },
448: { "minss", roff_line_ignore, NULL, NULL, 0, NULL },
449: { "mk", roff_line_ignore, NULL, NULL, 0, NULL },
450: { "mso", roff_insec, NULL, NULL, 0, NULL },
1.128 schwarze 451: { "na", roff_line_ignore, NULL, NULL, 0, NULL },
1.21 schwarze 452: { "ne", roff_line_ignore, NULL, NULL, 0, NULL },
453: { "nh", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 454: { "nhychar", roff_line_ignore, NULL, NULL, 0, NULL },
455: { "nm", roff_unsupp, NULL, NULL, 0, NULL },
456: { "nn", roff_unsupp, NULL, NULL, 0, NULL },
457: { "nop", roff_unsupp, NULL, NULL, 0, NULL },
1.14 schwarze 458: { "nr", roff_nr, NULL, NULL, 0, NULL },
1.123 schwarze 459: { "nrf", roff_unsupp, NULL, NULL, 0, NULL },
460: { "nroff", roff_line_ignore, NULL, NULL, 0, NULL },
1.31 schwarze 461: { "ns", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 462: { "nx", roff_insec, NULL, NULL, 0, NULL },
463: { "open", roff_insec, NULL, NULL, 0, NULL },
464: { "opena", roff_insec, NULL, NULL, 0, NULL },
465: { "os", roff_line_ignore, NULL, NULL, 0, NULL },
466: { "output", roff_unsupp, NULL, NULL, 0, NULL },
467: { "padj", roff_line_ignore, NULL, NULL, 0, NULL },
468: { "papersize", roff_line_ignore, NULL, NULL, 0, NULL },
469: { "pc", roff_line_ignore, NULL, NULL, 0, NULL },
470: { "pev", roff_line_ignore, NULL, NULL, 0, NULL },
471: { "pi", roff_insec, NULL, NULL, 0, NULL },
472: { "PI", roff_unsupp, NULL, NULL, 0, NULL },
1.101 schwarze 473: { "pl", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 474: { "pm", roff_line_ignore, NULL, NULL, 0, NULL },
475: { "pn", roff_line_ignore, NULL, NULL, 0, NULL },
476: { "pnr", roff_line_ignore, NULL, NULL, 0, NULL },
477: { "po", roff_line_ignore, NULL, NULL, 0, NULL },
1.31 schwarze 478: { "ps", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 479: { "psbb", roff_unsupp, NULL, NULL, 0, NULL },
1.127 schwarze 480: { "pshape", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 481: { "pso", roff_insec, NULL, NULL, 0, NULL },
482: { "ptr", roff_line_ignore, NULL, NULL, 0, NULL },
483: { "pvs", roff_line_ignore, NULL, NULL, 0, NULL },
484: { "rchar", roff_unsupp, NULL, NULL, 0, NULL },
485: { "rd", roff_line_ignore, NULL, NULL, 0, NULL },
486: { "recursionlimit", roff_line_ignore, NULL, NULL, 0, NULL },
487: { "return", roff_unsupp, NULL, NULL, 0, NULL },
488: { "rfschar", roff_unsupp, NULL, NULL, 0, NULL },
489: { "rhang", roff_line_ignore, NULL, NULL, 0, NULL },
490: { "rj", roff_line_ignore, NULL, NULL, 0, NULL },
1.29 schwarze 491: { "rm", roff_rm, NULL, NULL, 0, NULL },
1.123 schwarze 492: { "rn", roff_unsupp, NULL, NULL, 0, NULL },
493: { "rnn", roff_unsupp, NULL, NULL, 0, NULL },
1.76 schwarze 494: { "rr", roff_rr, NULL, NULL, 0, NULL },
1.123 schwarze 495: { "rs", roff_line_ignore, NULL, NULL, 0, NULL },
496: { "rt", roff_line_ignore, NULL, NULL, 0, NULL },
497: { "schar", roff_unsupp, NULL, NULL, 0, NULL },
498: { "sentchar", roff_line_ignore, NULL, NULL, 0, NULL },
499: { "shc", roff_line_ignore, NULL, NULL, 0, NULL },
500: { "shift", roff_unsupp, NULL, NULL, 0, NULL },
501: { "sizes", roff_line_ignore, NULL, NULL, 0, NULL },
1.14 schwarze 502: { "so", roff_so, NULL, NULL, 0, NULL },
1.123 schwarze 503: { "spacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
504: { "special", roff_line_ignore, NULL, NULL, 0, NULL },
505: { "spreadwarn", roff_line_ignore, NULL, NULL, 0, NULL },
506: { "ss", roff_line_ignore, NULL, NULL, 0, NULL },
507: { "sty", roff_line_ignore, NULL, NULL, 0, NULL },
508: { "substring", roff_unsupp, NULL, NULL, 0, NULL },
509: { "sv", roff_line_ignore, NULL, NULL, 0, NULL },
510: { "sy", roff_insec, NULL, NULL, 0, NULL },
511: { "T&", roff_T_, NULL, NULL, 0, NULL },
1.127 schwarze 512: { "ta", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 513: { "tc", roff_unsupp, NULL, NULL, 0, NULL },
514: { "TE", roff_TE, NULL, NULL, 0, NULL },
515: { "TH", roff_TH, NULL, NULL, 0, NULL },
1.127 schwarze 516: { "ti", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 517: { "tkf", roff_line_ignore, NULL, NULL, 0, NULL },
518: { "tl", roff_unsupp, NULL, NULL, 0, NULL },
519: { "tm", roff_line_ignore, NULL, NULL, 0, NULL },
520: { "tm1", roff_line_ignore, NULL, NULL, 0, NULL },
521: { "tmc", roff_line_ignore, NULL, NULL, 0, NULL },
1.42 schwarze 522: { "tr", roff_tr, NULL, NULL, 0, NULL },
1.123 schwarze 523: { "track", roff_line_ignore, NULL, NULL, 0, NULL },
524: { "transchar", roff_line_ignore, NULL, NULL, 0, NULL },
525: { "trf", roff_insec, NULL, NULL, 0, NULL },
526: { "trimat", roff_line_ignore, NULL, NULL, 0, NULL },
527: { "trin", roff_unsupp, NULL, NULL, 0, NULL },
528: { "trnt", roff_unsupp, NULL, NULL, 0, NULL },
529: { "troff", roff_line_ignore, NULL, NULL, 0, NULL },
1.27 schwarze 530: { "TS", roff_TS, NULL, NULL, 0, NULL },
1.123 schwarze 531: { "uf", roff_line_ignore, NULL, NULL, 0, NULL },
532: { "ul", roff_line_ignore, NULL, NULL, 0, NULL },
533: { "unformat", roff_unsupp, NULL, NULL, 0, NULL },
534: { "unwatch", roff_line_ignore, NULL, NULL, 0, NULL },
535: { "unwatchn", roff_line_ignore, NULL, NULL, 0, NULL },
536: { "vpt", roff_line_ignore, NULL, NULL, 0, NULL },
537: { "vs", roff_line_ignore, NULL, NULL, 0, NULL },
538: { "warn", roff_line_ignore, NULL, NULL, 0, NULL },
539: { "warnscale", roff_line_ignore, NULL, NULL, 0, NULL },
540: { "watch", roff_line_ignore, NULL, NULL, 0, NULL },
541: { "watchlength", roff_line_ignore, NULL, NULL, 0, NULL },
542: { "watchn", roff_line_ignore, NULL, NULL, 0, NULL },
543: { "wh", roff_unsupp, NULL, NULL, 0, NULL },
544: { "while", roff_unsupp, NULL, NULL, 0, NULL },
545: { "write", roff_insec, NULL, NULL, 0, NULL },
546: { "writec", roff_insec, NULL, NULL, 0, NULL },
547: { "writem", roff_insec, NULL, NULL, 0, NULL },
548: { "xflag", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 549: { ".", roff_cblock, NULL, NULL, 0, NULL },
1.16 schwarze 550: { NULL, roff_userdef, NULL, NULL, 0, NULL },
1.1 schwarze 551: };
552:
1.73 schwarze 553: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.47 schwarze 554: const char *const __mdoc_reserved[] = {
555: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
556: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
557: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
558: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.73 schwarze 559: "Dt", "Dv", "Dx", "D1",
560: "Ec", "Ed", "Ef", "Ek", "El", "Em",
561: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.47 schwarze 562: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.73 schwarze 563: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
564: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.47 schwarze 565: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.73 schwarze 566: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
567: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
568: "Sc", "Sh", "Sm", "So", "Sq",
1.47 schwarze 569: "Ss", "St", "Sx", "Sy",
570: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.73 schwarze 571: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.47 schwarze 572: "%P", "%Q", "%R", "%T", "%U", "%V",
573: NULL
574: };
575:
1.73 schwarze 576: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.47 schwarze 577: const char *const __man_reserved[] = {
1.73 schwarze 578: "AT", "B", "BI", "BR", "DT",
579: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
580: "LP", "OP", "P", "PD", "PP",
581: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
582: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.47 schwarze 583: NULL
584: };
585:
1.37 schwarze 586: /* Array of injected predefined strings. */
587: #define PREDEFS_MAX 38
588: static const struct predef predefs[PREDEFS_MAX] = {
589: #include "predefs.in"
590: };
591:
1.42 schwarze 592: /* See roffhash_find() */
1.3 schwarze 593: #define ROFF_HASH(p) (p[0] - ASCII_LO)
594:
1.51 schwarze 595: static int roffit_lines; /* number of lines to delay */
596: static char *roffit_macro; /* nil-terminated macro line */
597:
1.80 schwarze 598:
1.138 schwarze 599: /* --- request table ------------------------------------------------------ */
600:
1.3 schwarze 601: static void
1.42 schwarze 602: roffhash_init(void)
1.3 schwarze 603: {
604: struct roffmac *n;
605: int buc, i;
606:
1.16 schwarze 607: for (i = 0; i < (int)ROFF_USERDEF; i++) {
1.3 schwarze 608: assert(roffs[i].name[0] >= ASCII_LO);
609: assert(roffs[i].name[0] <= ASCII_HI);
610:
611: buc = ROFF_HASH(roffs[i].name);
612:
613: if (NULL != (n = hash[buc])) {
614: for ( ; n->next; n = n->next)
615: /* Do nothing. */ ;
616: n->next = &roffs[i];
617: } else
618: hash[buc] = &roffs[i];
619: }
620: }
621:
1.1 schwarze 622: /*
1.166 ! schwarze 623: * Look up a roff token by its name. Returns TOKEN_NONE if no macro by
1.1 schwarze 624: * the nil-terminated string name could be found.
625: */
1.166 ! schwarze 626: static enum roff_tok
1.42 schwarze 627: roffhash_find(const char *p, size_t s)
1.1 schwarze 628: {
1.3 schwarze 629: int buc;
630: struct roffmac *n;
1.1 schwarze 631:
1.3 schwarze 632: /*
633: * libroff has an extremely simple hashtable, for the time
634: * being, which simply keys on the first character, which must
635: * be printable, then walks a chain. It works well enough until
636: * optimised.
637: */
638:
639: if (p[0] < ASCII_LO || p[0] > ASCII_HI)
1.166 ! schwarze 640: return TOKEN_NONE;
1.3 schwarze 641:
642: buc = ROFF_HASH(p);
643:
644: if (NULL == (n = hash[buc]))
1.166 ! schwarze 645: return TOKEN_NONE;
1.3 schwarze 646: for ( ; n; n = n->next)
1.16 schwarze 647: if (0 == strncmp(n->name, p, s) && '\0' == n->name[(int)s])
1.166 ! schwarze 648: return (enum roff_tok)(n - roffs);
1.1 schwarze 649:
1.166 ! schwarze 650: return TOKEN_NONE;
1.1 schwarze 651: }
652:
1.138 schwarze 653: /* --- stack of request blocks -------------------------------------------- */
654:
1.1 schwarze 655: /*
656: * Pop the current node off of the stack of roff instructions currently
657: * pending.
658: */
659: static void
660: roffnode_pop(struct roff *r)
661: {
662: struct roffnode *p;
663:
1.2 schwarze 664: assert(r->last);
1.80 schwarze 665: p = r->last;
1.2 schwarze 666:
667: r->last = r->last->parent;
1.16 schwarze 668: free(p->name);
669: free(p->end);
1.1 schwarze 670: free(p);
671: }
672:
673: /*
674: * Push a roff node onto the instruction stack. This must later be
675: * removed with roffnode_pop().
676: */
1.11 schwarze 677: static void
1.166 ! schwarze 678: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 679: int line, int col)
1.1 schwarze 680: {
681: struct roffnode *p;
682:
1.11 schwarze 683: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 684: p->tok = tok;
1.16 schwarze 685: if (name)
686: p->name = mandoc_strdup(name);
1.1 schwarze 687: p->parent = r->last;
688: p->line = line;
689: p->col = col;
1.71 schwarze 690: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 691:
692: r->last = p;
693: }
694:
1.138 schwarze 695: /* --- roff parser state data management ---------------------------------- */
696:
1.1 schwarze 697: static void
698: roff_free1(struct roff *r)
699: {
1.49 schwarze 700: struct tbl_node *tbl;
1.32 schwarze 701: struct eqn_node *e;
1.42 schwarze 702: int i;
1.27 schwarze 703:
1.49 schwarze 704: while (NULL != (tbl = r->first_tbl)) {
705: r->first_tbl = tbl->next;
706: tbl_free(tbl);
1.27 schwarze 707: }
708: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 709:
1.32 schwarze 710: while (NULL != (e = r->first_eqn)) {
711: r->first_eqn = e->next;
712: eqn_free(e);
713: }
714: r->first_eqn = r->last_eqn = r->eqn = NULL;
715:
1.1 schwarze 716: while (r->last)
717: roffnode_pop(r);
1.27 schwarze 718:
1.96 schwarze 719: free (r->rstack);
720: r->rstack = NULL;
721: r->rstacksz = 0;
722: r->rstackpos = -1;
723:
724: roff_freereg(r->regtab);
725: r->regtab = NULL;
726:
1.42 schwarze 727: roff_freestr(r->strtab);
728: roff_freestr(r->xmbtab);
729: r->strtab = r->xmbtab = NULL;
730:
731: if (r->xtab)
732: for (i = 0; i < 128; i++)
733: free(r->xtab[i].p);
734: free(r->xtab);
735: r->xtab = NULL;
1.1 schwarze 736: }
737:
738: void
739: roff_reset(struct roff *r)
740: {
741:
742: roff_free1(r);
1.99 schwarze 743: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.48 schwarze 744: r->control = 0;
1.1 schwarze 745: }
746:
747: void
748: roff_free(struct roff *r)
749: {
750:
751: roff_free1(r);
752: free(r);
753: }
754:
755: struct roff *
1.151 schwarze 756: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 757: {
758: struct roff *r;
759:
1.11 schwarze 760: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 761: r->parse = parse;
1.72 schwarze 762: r->options = options;
1.99 schwarze 763: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 764: r->rstackpos = -1;
1.80 schwarze 765:
1.42 schwarze 766: roffhash_init();
1.37 schwarze 767:
1.149 schwarze 768: return r;
1.137 schwarze 769: }
770:
1.138 schwarze 771: /* --- syntax tree state data management ---------------------------------- */
772:
1.137 schwarze 773: static void
774: roff_man_free1(struct roff_man *man)
775: {
776:
1.138 schwarze 777: if (man->first != NULL)
778: roff_node_delete(man, man->first);
1.137 schwarze 779: free(man->meta.msec);
780: free(man->meta.vol);
781: free(man->meta.os);
782: free(man->meta.arch);
783: free(man->meta.title);
784: free(man->meta.name);
785: free(man->meta.date);
786: }
787:
788: static void
789: roff_man_alloc1(struct roff_man *man)
790: {
791:
792: memset(&man->meta, 0, sizeof(man->meta));
793: man->first = mandoc_calloc(1, sizeof(*man->first));
794: man->first->type = ROFFT_ROOT;
795: man->last = man->first;
796: man->last_es = NULL;
797: man->flags = 0;
798: man->macroset = MACROSET_NONE;
799: man->lastsec = man->lastnamed = SEC_NONE;
800: man->next = ROFF_NEXT_CHILD;
801: }
802:
803: void
804: roff_man_reset(struct roff_man *man)
805: {
806:
807: roff_man_free1(man);
808: roff_man_alloc1(man);
809: }
810:
811: void
812: roff_man_free(struct roff_man *man)
813: {
814:
815: roff_man_free1(man);
816: free(man);
817: }
818:
819: struct roff_man *
820: roff_man_alloc(struct roff *roff, struct mparse *parse,
821: const char *defos, int quick)
822: {
823: struct roff_man *man;
824:
825: man = mandoc_calloc(1, sizeof(*man));
826: man->parse = parse;
827: man->roff = roff;
828: man->defos = defos;
829: man->quick = quick;
830: roff_man_alloc1(man);
1.149 schwarze 831: return man;
1.1 schwarze 832: }
833:
1.138 schwarze 834: /* --- syntax tree handling ----------------------------------------------- */
835:
836: struct roff_node *
837: roff_node_alloc(struct roff_man *man, int line, int pos,
838: enum roff_type type, int tok)
839: {
840: struct roff_node *n;
841:
842: n = mandoc_calloc(1, sizeof(*n));
843: n->line = line;
844: n->pos = pos;
845: n->tok = tok;
846: n->type = type;
847: n->sec = man->lastsec;
848:
849: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 850: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 851: else
1.157 schwarze 852: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 853: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 854: n->flags |= NODE_LINE;
1.138 schwarze 855: man->flags &= ~MDOC_NEWLINE;
856:
1.149 schwarze 857: return n;
1.138 schwarze 858: }
859:
860: void
861: roff_node_append(struct roff_man *man, struct roff_node *n)
862: {
863:
864: switch (man->next) {
865: case ROFF_NEXT_SIBLING:
1.153 schwarze 866: if (man->last->next != NULL) {
867: n->next = man->last->next;
868: man->last->next->prev = n;
869: } else
870: man->last->parent->last = n;
1.138 schwarze 871: man->last->next = n;
872: n->prev = man->last;
873: n->parent = man->last->parent;
874: break;
875: case ROFF_NEXT_CHILD:
1.159 schwarze 876: if (man->last->child != NULL) {
877: n->next = man->last->child;
878: man->last->child->prev = n;
879: } else
880: man->last->last = n;
1.138 schwarze 881: man->last->child = n;
882: n->parent = man->last;
883: break;
884: default:
885: abort();
886: }
1.154 schwarze 887: man->last = n;
1.138 schwarze 888:
889: switch (n->type) {
890: case ROFFT_HEAD:
891: n->parent->head = n;
892: break;
893: case ROFFT_BODY:
1.154 schwarze 894: if (n->end != ENDBODY_NOT)
895: return;
1.138 schwarze 896: n->parent->body = n;
897: break;
898: case ROFFT_TAIL:
899: n->parent->tail = n;
900: break;
901: default:
1.154 schwarze 902: return;
1.138 schwarze 903: }
1.154 schwarze 904:
905: /*
906: * Copy over the normalised-data pointer of our parent. Not
907: * everybody has one, but copying a null pointer is fine.
908: */
909:
910: n->norm = n->parent->norm;
911: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 912: }
913:
1.139 schwarze 914: void
915: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
916: {
917: struct roff_node *n;
918:
919: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
920: n->string = roff_strdup(man->roff, word);
921: roff_node_append(man, n);
1.158 schwarze 922: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 923: man->next = ROFF_NEXT_SIBLING;
924: }
925:
926: void
927: roff_word_append(struct roff_man *man, const char *word)
928: {
929: struct roff_node *n;
930: char *addstr, *newstr;
931:
932: n = man->last;
933: addstr = roff_strdup(man->roff, word);
934: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
935: free(addstr);
936: free(n->string);
937: n->string = newstr;
938: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 939: }
940:
941: void
942: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
943: {
944: struct roff_node *n;
945:
946: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
947: roff_node_append(man, n);
948: man->next = ROFF_NEXT_CHILD;
949: }
950:
951: struct roff_node *
952: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
953: {
954: struct roff_node *n;
955:
956: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
957: roff_node_append(man, n);
958: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 959: return n;
1.139 schwarze 960: }
961:
1.138 schwarze 962: struct roff_node *
963: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
964: {
965: struct roff_node *n;
966:
967: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
968: roff_node_append(man, n);
969: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 970: return n;
1.138 schwarze 971: }
972:
973: struct roff_node *
974: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
975: {
976: struct roff_node *n;
977:
978: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
979: roff_node_append(man, n);
980: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 981: return n;
1.139 schwarze 982: }
983:
984: void
985: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
986: {
987: struct roff_node *n;
988:
989: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
990: n->eqn = eqn;
991: if (eqn->ln > man->last->line)
1.157 schwarze 992: n->flags |= NODE_LINE;
1.139 schwarze 993: roff_node_append(man, n);
994: man->next = ROFF_NEXT_SIBLING;
995: }
996:
997: void
998: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
999: {
1000: struct roff_node *n;
1001:
1002: if (man->macroset == MACROSET_MAN)
1003: man_breakscope(man, TOKEN_NONE);
1004: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1005: n->span = tbl;
1006: roff_node_append(man, n);
1.158 schwarze 1007: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 1008: man->next = ROFF_NEXT_SIBLING;
1.138 schwarze 1009: }
1010:
1011: void
1012: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1013: {
1014:
1015: /* Adjust siblings. */
1016:
1017: if (n->prev)
1018: n->prev->next = n->next;
1019: if (n->next)
1020: n->next->prev = n->prev;
1021:
1022: /* Adjust parent. */
1023:
1024: if (n->parent != NULL) {
1025: if (n->parent->child == n)
1026: n->parent->child = n->next;
1027: if (n->parent->last == n)
1028: n->parent->last = n->prev;
1029: }
1030:
1031: /* Adjust parse point. */
1032:
1033: if (man == NULL)
1034: return;
1035: if (man->last == n) {
1036: if (n->prev == NULL) {
1037: man->last = n->parent;
1038: man->next = ROFF_NEXT_CHILD;
1039: } else {
1040: man->last = n->prev;
1041: man->next = ROFF_NEXT_SIBLING;
1042: }
1043: }
1044: if (man->first == n)
1045: man->first = NULL;
1046: }
1047:
1048: void
1049: roff_node_free(struct roff_node *n)
1050: {
1051:
1052: if (n->args != NULL)
1053: mdoc_argv_free(n->args);
1054: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1055: free(n->norm);
1056: free(n->string);
1057: free(n);
1058: }
1059:
1060: void
1061: roff_node_delete(struct roff_man *man, struct roff_node *n)
1062: {
1063:
1064: while (n->child != NULL)
1065: roff_node_delete(man, n->child);
1066: roff_node_unlink(man, n);
1067: roff_node_free(n);
1.141 schwarze 1068: }
1069:
1070: void
1071: deroff(char **dest, const struct roff_node *n)
1072: {
1073: char *cp;
1074: size_t sz;
1075:
1076: if (n->type != ROFFT_TEXT) {
1077: for (n = n->child; n != NULL; n = n->next)
1078: deroff(dest, n);
1079: return;
1080: }
1081:
1.160 schwarze 1082: /* Skip leading whitespace. */
1.141 schwarze 1083:
1.160 schwarze 1084: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1085: if (cp[0] == '\\' && cp[1] != '\0' &&
1086: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1087: cp++;
1.160 schwarze 1088: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1089: break;
1090: }
1091:
1.161 schwarze 1092: /* Skip trailing backslash. */
1093:
1094: sz = strlen(cp);
1.162 schwarze 1095: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1096: sz--;
1097:
1.141 schwarze 1098: /* Skip trailing whitespace. */
1099:
1.161 schwarze 1100: for (; sz; sz--)
1.141 schwarze 1101: if ( ! isspace((unsigned char)cp[sz-1]))
1102: break;
1103:
1104: /* Skip empty strings. */
1105:
1106: if (sz == 0)
1107: return;
1108:
1109: if (*dest == NULL) {
1110: *dest = mandoc_strndup(cp, sz);
1111: return;
1112: }
1113:
1114: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1115: free(*dest);
1116: *dest = cp;
1.138 schwarze 1117: }
1118:
1119: /* --- main functions of the roff parser ---------------------------------- */
1120:
1.8 schwarze 1121: /*
1.79 schwarze 1122: * In the current line, expand escape sequences that tend to get
1123: * used in numerical expressions and conditional requests.
1124: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1125: */
1.45 schwarze 1126: static enum rofferr
1.110 schwarze 1127: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1128: {
1.81 schwarze 1129: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1130: const char *start; /* start of the string to process */
1.82 schwarze 1131: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1132: const char *stnam; /* start of the name, after "[(*" */
1133: const char *cp; /* end of the name, e.g. before ']' */
1134: const char *res; /* the string to be substituted */
1.110 schwarze 1135: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1136: size_t maxl; /* expected length of the escape name */
1137: size_t naml; /* actual length of the escape name */
1.109 schwarze 1138: enum mandoc_esc esc; /* type of the escape sequence */
1139: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1140: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1141: int npos; /* position in numeric expression */
1.91 schwarze 1142: int arg_complete; /* argument not interrupted by eol */
1.79 schwarze 1143: char term; /* character terminating the escape */
1.8 schwarze 1144:
1.43 schwarze 1145: expand_count = 0;
1.110 schwarze 1146: start = buf->buf + pos;
1.78 schwarze 1147: stesc = strchr(start, '\0') - 1;
1148: while (stesc-- > start) {
1.43 schwarze 1149:
1.78 schwarze 1150: /* Search backwards for the next backslash. */
1151:
1.110 schwarze 1152: if (*stesc != '\\')
1.78 schwarze 1153: continue;
1154:
1155: /* If it is escaped, skip it. */
1156:
1157: for (cp = stesc - 1; cp >= start; cp--)
1.110 schwarze 1158: if (*cp != '\\')
1.78 schwarze 1159: break;
1160:
1.110 schwarze 1161: if ((stesc - cp) % 2 == 0) {
1.82 schwarze 1162: stesc = (char *)cp;
1.78 schwarze 1163: continue;
1164: }
1.23 schwarze 1165:
1.79 schwarze 1166: /* Decide whether to expand or to check only. */
1.23 schwarze 1167:
1.79 schwarze 1168: term = '\0';
1.78 schwarze 1169: cp = stesc + 1;
1.53 schwarze 1170: switch (*cp) {
1.80 schwarze 1171: case '*':
1.53 schwarze 1172: res = NULL;
1173: break;
1.80 schwarze 1174: case 'B':
1175: case 'w':
1.79 schwarze 1176: term = cp[1];
1177: /* FALLTHROUGH */
1.80 schwarze 1178: case 'n':
1.53 schwarze 1179: res = ubuf;
1180: break;
1181: default:
1.109 schwarze 1182: esc = mandoc_escape(&cp, &stnam, &inaml);
1183: if (esc == ESCAPE_ERROR ||
1184: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1185: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1186: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1187: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1188: "%.*s", (int)(cp - stesc), stesc);
1.78 schwarze 1189: continue;
1.42 schwarze 1190: }
1191:
1.78 schwarze 1192: if (EXPAND_LIMIT < ++expand_count) {
1193: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1194: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1195: return ROFF_IGN;
1.78 schwarze 1196: }
1.23 schwarze 1197:
1198: /*
1199: * The third character decides the length
1.53 schwarze 1200: * of the name of the string or register.
1.23 schwarze 1201: * Save a pointer to the name.
1202: */
1203:
1.110 schwarze 1204: if (term == '\0') {
1.79 schwarze 1205: switch (*++cp) {
1.80 schwarze 1206: case '\0':
1.79 schwarze 1207: maxl = 0;
1208: break;
1.80 schwarze 1209: case '(':
1.79 schwarze 1210: cp++;
1211: maxl = 2;
1212: break;
1.80 schwarze 1213: case '[':
1.79 schwarze 1214: cp++;
1215: term = ']';
1216: maxl = 0;
1217: break;
1218: default:
1219: maxl = 1;
1220: break;
1221: }
1222: } else {
1223: cp += 2;
1.8 schwarze 1224: maxl = 0;
1225: }
1.23 schwarze 1226: stnam = cp;
1.8 schwarze 1227:
1.23 schwarze 1228: /* Advance to the end of the name. */
1.8 schwarze 1229:
1.125 schwarze 1230: naml = 0;
1.91 schwarze 1231: arg_complete = 1;
1.125 schwarze 1232: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1233: if (*cp == '\0') {
1.92 schwarze 1234: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1235: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1236: arg_complete = 0;
1.79 schwarze 1237: break;
1.42 schwarze 1238: }
1.110 schwarze 1239: if (maxl == 0 && *cp == term) {
1.79 schwarze 1240: cp++;
1.125 schwarze 1241: break;
1242: }
1243: if (*cp++ != '\\' || stesc[1] != 'w') {
1244: naml++;
1245: continue;
1246: }
1247: switch (mandoc_escape(&cp, NULL, NULL)) {
1248: case ESCAPE_SPECIAL:
1249: case ESCAPE_UNICODE:
1250: case ESCAPE_NUMBERED:
1251: case ESCAPE_OVERSTRIKE:
1252: naml++;
1253: break;
1254: default:
1.8 schwarze 1255: break;
1.79 schwarze 1256: }
1.8 schwarze 1257: }
1258:
1.23 schwarze 1259: /*
1260: * Retrieve the replacement string; if it is
1261: * undefined, resume searching for escapes.
1262: */
1263:
1.79 schwarze 1264: switch (stesc[1]) {
1.80 schwarze 1265: case '*':
1.91 schwarze 1266: if (arg_complete)
1267: res = roff_getstrn(r, stnam, naml);
1.79 schwarze 1268: break;
1.80 schwarze 1269: case 'B':
1.79 schwarze 1270: npos = 0;
1.91 schwarze 1271: ubuf[0] = arg_complete &&
1.133 schwarze 1272: roff_evalnum(r, ln, stnam, &npos,
1273: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1274: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1275: ubuf[1] = '\0';
1276: break;
1.80 schwarze 1277: case 'n':
1.91 schwarze 1278: if (arg_complete)
1279: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1280: roff_getregn(r, stnam, naml));
1281: else
1282: ubuf[0] = '\0';
1.79 schwarze 1283: break;
1.80 schwarze 1284: case 'w':
1.91 schwarze 1285: /* use even incomplete args */
1.81 schwarze 1286: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1287: 24 * (int)naml);
1288: break;
1289: }
1.8 schwarze 1290:
1.110 schwarze 1291: if (res == NULL) {
1.92 schwarze 1292: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1293: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1294: "%.*s", (int)naml, stnam);
1.37 schwarze 1295: res = "";
1.118 schwarze 1296: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1297: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1298: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1299: return ROFF_IGN;
1.8 schwarze 1300: }
1301:
1.23 schwarze 1302: /* Replace the escape sequence by the string. */
1303:
1.82 schwarze 1304: *stesc = '\0';
1.110 schwarze 1305: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1306: buf->buf, res, cp) + 1;
1.8 schwarze 1307:
1.78 schwarze 1308: /* Prepare for the next replacement. */
1.8 schwarze 1309:
1.78 schwarze 1310: start = nbuf + pos;
1.110 schwarze 1311: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1312: free(buf->buf);
1313: buf->buf = nbuf;
1.42 schwarze 1314: }
1.149 schwarze 1315: return ROFF_CONT;
1.42 schwarze 1316: }
1317:
1318: /*
1.147 schwarze 1319: * Process text streams.
1.42 schwarze 1320: */
1321: static enum rofferr
1.110 schwarze 1322: roff_parsetext(struct buf *buf, int pos, int *offs)
1.42 schwarze 1323: {
1324: size_t sz;
1325: const char *start;
1.51 schwarze 1326: char *p;
1327: int isz;
1.42 schwarze 1328: enum mandoc_esc esc;
1329:
1.147 schwarze 1330: /* Spring the input line trap. */
1331:
1332: if (roffit_lines == 1) {
1333: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1334: free(buf->buf);
1335: buf->buf = p;
1336: buf->sz = isz + 1;
1337: *offs = 0;
1338: free(roffit_macro);
1339: roffit_lines = 0;
1.149 schwarze 1340: return ROFF_REPARSE;
1.147 schwarze 1341: } else if (roffit_lines > 1)
1342: --roffit_lines;
1343:
1344: /* Convert all breakable hyphens into ASCII_HYPH. */
1345:
1.110 schwarze 1346: start = p = buf->buf + pos;
1.42 schwarze 1347:
1.110 schwarze 1348: while (*p != '\0') {
1.42 schwarze 1349: sz = strcspn(p, "-\\");
1350: p += sz;
1351:
1.110 schwarze 1352: if (*p == '\0')
1.42 schwarze 1353: break;
1354:
1.110 schwarze 1355: if (*p == '\\') {
1.42 schwarze 1356: /* Skip over escapes. */
1357: p++;
1.62 schwarze 1358: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1359: if (esc == ESCAPE_ERROR)
1.42 schwarze 1360: break;
1.136 schwarze 1361: while (*p == '-')
1362: p++;
1.42 schwarze 1363: continue;
1364: } else if (p == start) {
1365: p++;
1366: continue;
1367: }
1368:
1.44 schwarze 1369: if (isalpha((unsigned char)p[-1]) &&
1370: isalpha((unsigned char)p[1]))
1.42 schwarze 1371: *p = ASCII_HYPH;
1372: p++;
1.8 schwarze 1373: }
1.149 schwarze 1374: return ROFF_CONT;
1.8 schwarze 1375: }
1376:
1.1 schwarze 1377: enum rofferr
1.110 schwarze 1378: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1379: {
1.166 ! schwarze 1380: enum roff_tok t;
1.27 schwarze 1381: enum rofferr e;
1.110 schwarze 1382: int pos; /* parse point */
1.115 schwarze 1383: int spos; /* saved parse point for messages */
1.110 schwarze 1384: int ppos; /* original offset in buf->buf */
1385: int ctl; /* macro line (boolean) */
1386:
1387: ppos = pos = *offs;
1.1 schwarze 1388:
1.102 schwarze 1389: /* Handle in-line equation delimiters. */
1390:
1.108 schwarze 1391: if (r->tbl == NULL &&
1392: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1393: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1394: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1395: if (e == ROFF_REPARSE)
1.149 schwarze 1396: return e;
1.102 schwarze 1397: assert(e == ROFF_CONT);
1398: }
1399:
1400: /* Expand some escape sequences. */
1.8 schwarze 1401:
1.110 schwarze 1402: e = roff_res(r, buf, ln, pos);
1403: if (e == ROFF_IGN)
1.149 schwarze 1404: return e;
1.110 schwarze 1405: assert(e == ROFF_CONT);
1.8 schwarze 1406:
1.110 schwarze 1407: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1408:
1.8 schwarze 1409: /*
1.2 schwarze 1410: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1411: * text through the macro's filter.
1412: * Equations process all content themselves.
1413: * Tables process almost all content themselves, but we want
1414: * to warn about macros before passing it there.
1.2 schwarze 1415: */
1416:
1.124 schwarze 1417: if (r->last != NULL && ! ctl) {
1.2 schwarze 1418: t = r->last->tok;
1.110 schwarze 1419: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.166 ! schwarze 1420: if (e == ROFF_IGN)
1.149 schwarze 1421: return e;
1.166 ! schwarze 1422: assert(e == ROFF_CONT);
1.54 schwarze 1423: }
1.124 schwarze 1424: if (r->eqn != NULL)
1.149 schwarze 1425: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.124 schwarze 1426: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.149 schwarze 1427: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.124 schwarze 1428: if ( ! ctl)
1.149 schwarze 1429: return roff_parsetext(buf, pos, offs);
1.100 schwarze 1430:
1431: /* Skip empty request lines. */
1432:
1.110 schwarze 1433: if (buf->buf[pos] == '"') {
1.100 schwarze 1434: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1435: ln, pos, NULL);
1.149 schwarze 1436: return ROFF_IGN;
1.110 schwarze 1437: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1438: return ROFF_IGN;
1.2 schwarze 1439:
1440: /*
1441: * If a scope is open, go to the child handler for that macro,
1442: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1443: * Don't do so if an equation is open.
1.2 schwarze 1444: */
1445:
1446: if (r->last) {
1.1 schwarze 1447: t = r->last->tok;
1.149 schwarze 1448: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1449: }
1450:
1.115 schwarze 1451: /* No scope is open. This is a new request or macro. */
1452:
1453: spos = pos;
1454: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1455:
1456: /* Tables ignore most macros. */
1457:
1.166 ! schwarze 1458: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS)) {
1.115 schwarze 1459: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1460: ln, pos, buf->buf + spos);
1.129 schwarze 1461: if (t == ROFF_TS)
1.149 schwarze 1462: return ROFF_IGN;
1.129 schwarze 1463: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1464: pos++;
1.163 schwarze 1465: while (buf->buf[pos] == ' ')
1.129 schwarze 1466: pos++;
1.149 schwarze 1467: return tbl_read(r->tbl, ln, buf->buf, pos);
1.115 schwarze 1468: }
1469:
1.2 schwarze 1470: /*
1.115 schwarze 1471: * This is neither a roff request nor a user-defined macro.
1472: * Let the standard macro set parsers handle it.
1.2 schwarze 1473: */
1474:
1.166 ! schwarze 1475: if (t == TOKEN_NONE)
1.149 schwarze 1476: return ROFF_CONT;
1.115 schwarze 1477:
1478: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1479:
1.149 schwarze 1480: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1481: }
1482:
1.27 schwarze 1483: void
1.2 schwarze 1484: roff_endparse(struct roff *r)
1485: {
1.1 schwarze 1486:
1.27 schwarze 1487: if (r->last)
1.94 schwarze 1488: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1489: r->last->line, r->last->col,
1490: roffs[r->last->tok].name);
1.27 schwarze 1491:
1.32 schwarze 1492: if (r->eqn) {
1.94 schwarze 1493: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1494: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1495: eqn_end(&r->eqn);
1.32 schwarze 1496: }
1497:
1.27 schwarze 1498: if (r->tbl) {
1.94 schwarze 1499: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1500: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1501: tbl_end(&r->tbl);
1.27 schwarze 1502: }
1.1 schwarze 1503: }
1504:
1505: /*
1506: * Parse a roff node's type from the input buffer. This must be in the
1507: * form of ".foo xxx" in the usual way.
1508: */
1.166 ! schwarze 1509: static enum roff_tok
1.87 schwarze 1510: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1511: {
1.87 schwarze 1512: char *cp;
1.16 schwarze 1513: const char *mac;
1514: size_t maclen;
1.166 ! schwarze 1515: enum roff_tok t;
1.1 schwarze 1516:
1.87 schwarze 1517: cp = buf + *pos;
1518:
1519: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 ! schwarze 1520: return TOKEN_NONE;
1.1 schwarze 1521:
1.87 schwarze 1522: mac = cp;
1523: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1524:
1.16 schwarze 1525: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.42 schwarze 1526: ? ROFF_USERDEF : roffhash_find(mac, maclen);
1.1 schwarze 1527:
1.166 ! schwarze 1528: if (t != TOKEN_NONE)
1.87 schwarze 1529: *pos = cp - buf;
1.1 schwarze 1530:
1.149 schwarze 1531: return t;
1.1 schwarze 1532: }
1533:
1.138 schwarze 1534: /* --- handling of request blocks ----------------------------------------- */
1535:
1.1 schwarze 1536: static enum rofferr
1.2 schwarze 1537: roff_cblock(ROFF_ARGS)
1.1 schwarze 1538: {
1539:
1.2 schwarze 1540: /*
1541: * A block-close `..' should only be invoked as a child of an
1542: * ignore macro, otherwise raise a warning and just ignore it.
1543: */
1544:
1.110 schwarze 1545: if (r->last == NULL) {
1.94 schwarze 1546: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1547: ln, ppos, "..");
1.149 schwarze 1548: return ROFF_IGN;
1.2 schwarze 1549: }
1.1 schwarze 1550:
1.2 schwarze 1551: switch (r->last->tok) {
1.80 schwarze 1552: case ROFF_am:
1.93 schwarze 1553: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1554: case ROFF_ami:
1555: case ROFF_de:
1.23 schwarze 1556: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1557: case ROFF_dei:
1558: case ROFF_ig:
1.2 schwarze 1559: break;
1560: default:
1.94 schwarze 1561: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1562: ln, ppos, "..");
1.149 schwarze 1563: return ROFF_IGN;
1.2 schwarze 1564: }
1565:
1.110 schwarze 1566: if (buf->buf[pos] != '\0')
1.90 schwarze 1567: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1568: ".. %s", buf->buf + pos);
1.2 schwarze 1569:
1570: roffnode_pop(r);
1571: roffnode_cleanscope(r);
1.149 schwarze 1572: return ROFF_IGN;
1.2 schwarze 1573:
1574: }
1.1 schwarze 1575:
1.2 schwarze 1576: static void
1577: roffnode_cleanscope(struct roff *r)
1578: {
1.1 schwarze 1579:
1.2 schwarze 1580: while (r->last) {
1.46 schwarze 1581: if (--r->last->endspan != 0)
1.2 schwarze 1582: break;
1583: roffnode_pop(r);
1584: }
1585: }
1.1 schwarze 1586:
1.68 schwarze 1587: static void
1588: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1589: {
1.1 schwarze 1590:
1.2 schwarze 1591: if (NULL == r->last) {
1.94 schwarze 1592: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1593: ln, ppos, "\\}");
1.68 schwarze 1594: return;
1.2 schwarze 1595: }
1.1 schwarze 1596:
1.2 schwarze 1597: switch (r->last->tok) {
1.80 schwarze 1598: case ROFF_el:
1599: case ROFF_ie:
1600: case ROFF_if:
1.2 schwarze 1601: break;
1602: default:
1.94 schwarze 1603: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1604: ln, ppos, "\\}");
1.68 schwarze 1605: return;
1.2 schwarze 1606: }
1.1 schwarze 1607:
1.2 schwarze 1608: if (r->last->endspan > -1) {
1.94 schwarze 1609: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1610: ln, ppos, "\\}");
1.68 schwarze 1611: return;
1.2 schwarze 1612: }
1613:
1614: roffnode_pop(r);
1615: roffnode_cleanscope(r);
1.68 schwarze 1616: return;
1.1 schwarze 1617: }
1618:
1619: static enum rofferr
1.2 schwarze 1620: roff_block(ROFF_ARGS)
1.1 schwarze 1621: {
1.93 schwarze 1622: const char *name;
1623: char *iname, *cp;
1.86 schwarze 1624: size_t namesz;
1.16 schwarze 1625:
1.93 schwarze 1626: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1627:
1.110 schwarze 1628: if (tok == ROFF_de1)
1.93 schwarze 1629: tok = ROFF_de;
1.123 schwarze 1630: else if (tok == ROFF_dei1)
1631: tok = ROFF_dei;
1.110 schwarze 1632: else if (tok == ROFF_am1)
1.93 schwarze 1633: tok = ROFF_am;
1.123 schwarze 1634: else if (tok == ROFF_ami1)
1635: tok = ROFF_ami;
1.93 schwarze 1636:
1637: /* Parse the macro name argument. */
1638:
1.110 schwarze 1639: cp = buf->buf + pos;
1640: if (tok == ROFF_ig) {
1.93 schwarze 1641: iname = NULL;
1642: namesz = 0;
1643: } else {
1644: iname = cp;
1645: namesz = roff_getname(r, &cp, ln, ppos);
1646: iname[namesz] = '\0';
1647: }
1.22 schwarze 1648:
1.93 schwarze 1649: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1650:
1.110 schwarze 1651: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1652: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1653: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1654: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1655: "%.*s", (int)namesz, iname);
1656: namesz = 0;
1657: } else
1658: namesz = strlen(name);
1659: } else
1660: name = iname;
1.22 schwarze 1661:
1.110 schwarze 1662: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1663: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1664: ln, ppos, roffs[tok].name);
1.149 schwarze 1665: return ROFF_IGN;
1.93 schwarze 1666: }
1.2 schwarze 1667:
1.16 schwarze 1668: roffnode_push(r, tok, name, ln, ppos);
1669:
1670: /*
1671: * At the beginning of a `de' macro, clear the existing string
1672: * with the same name, if there is one. New content will be
1.66 schwarze 1673: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1674: */
1.22 schwarze 1675:
1.110 schwarze 1676: if (tok == ROFF_de || tok == ROFF_dei)
1.86 schwarze 1677: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.2 schwarze 1678:
1.110 schwarze 1679: if (*cp == '\0')
1.149 schwarze 1680: return ROFF_IGN;
1.1 schwarze 1681:
1.93 schwarze 1682: /* Get the custom end marker. */
1.22 schwarze 1683:
1.93 schwarze 1684: iname = cp;
1.86 schwarze 1685: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1686:
1687: /* Resolve the end marker if it is indirect. */
1688:
1.110 schwarze 1689: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1690: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1691: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1692: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1693: "%.*s", (int)namesz, iname);
1694: namesz = 0;
1695: } else
1696: namesz = strlen(name);
1697: } else
1698: name = iname;
1699:
1.86 schwarze 1700: if (namesz)
1701: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1702:
1.110 schwarze 1703: if (*cp != '\0')
1.90 schwarze 1704: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1705: ln, pos, ".%s ... %s", roffs[tok].name, cp);
1.1 schwarze 1706:
1.149 schwarze 1707: return ROFF_IGN;
1.1 schwarze 1708: }
1709:
1710: static enum rofferr
1.2 schwarze 1711: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1712: {
1.166 ! schwarze 1713: enum roff_tok t;
1.2 schwarze 1714: int i, j;
1715:
1716: /*
1717: * First check whether a custom macro exists at this level. If
1718: * it does, then check against it. This is some of groff's
1719: * stranger behaviours. If we encountered a custom end-scope
1720: * tag and that tag also happens to be a "real" macro, then we
1721: * need to try interpreting it again as a real macro. If it's
1722: * not, then return ignore. Else continue.
1723: */
1724:
1725: if (r->last->end) {
1.35 schwarze 1726: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1727: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1728: break;
1.1 schwarze 1729:
1.110 schwarze 1730: if (r->last->end[j] == '\0' &&
1731: (buf->buf[i] == '\0' ||
1732: buf->buf[i] == ' ' ||
1733: buf->buf[i] == '\t')) {
1.2 schwarze 1734: roffnode_pop(r);
1735: roffnode_cleanscope(r);
1.1 schwarze 1736:
1.110 schwarze 1737: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1738: i++;
1739:
1740: pos = i;
1.110 schwarze 1741: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 ! schwarze 1742: TOKEN_NONE)
1.149 schwarze 1743: return ROFF_RERUN;
1744: return ROFF_IGN;
1.2 schwarze 1745: }
1.1 schwarze 1746: }
1747:
1.2 schwarze 1748: /*
1749: * If we have no custom end-query or lookup failed, then try
1750: * pulling it out of the hashtable.
1751: */
1.1 schwarze 1752:
1.110 schwarze 1753: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1754:
1.110 schwarze 1755: if (t != ROFF_cblock) {
1756: if (tok != ROFF_ig)
1757: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1758: return ROFF_IGN;
1.16 schwarze 1759: }
1.1 schwarze 1760:
1.149 schwarze 1761: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1762: }
1763:
1764: static enum rofferr
1765: roff_block_text(ROFF_ARGS)
1766: {
1767:
1.110 schwarze 1768: if (tok != ROFF_ig)
1769: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1770:
1.149 schwarze 1771: return ROFF_IGN;
1.2 schwarze 1772: }
1773:
1774: static enum rofferr
1775: roff_cond_sub(ROFF_ARGS)
1776: {
1.166 ! schwarze 1777: enum roff_tok t;
1.37 schwarze 1778: char *ep;
1.71 schwarze 1779: int rr;
1.2 schwarze 1780:
1781: rr = r->last->rule;
1.37 schwarze 1782: roffnode_cleanscope(r);
1.110 schwarze 1783: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1784:
1.37 schwarze 1785: /*
1.50 schwarze 1786: * Fully handle known macros when they are structurally
1787: * required or when the conditional evaluated to true.
1.5 schwarze 1788: */
1789:
1.166 ! schwarze 1790: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.149 schwarze 1791: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.39 schwarze 1792:
1.69 schwarze 1793: /*
1794: * If `\}' occurs on a macro line without a preceding macro,
1795: * drop the line completely.
1796: */
1797:
1.110 schwarze 1798: ep = buf->buf + pos;
1799: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1800: rr = 0;
1.69 schwarze 1801:
1.50 schwarze 1802: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1803:
1.110 schwarze 1804: while ((ep = strchr(ep, '\\')) != NULL) {
1805: if (*(++ep) == '}') {
1.70 schwarze 1806: *ep = '&';
1.110 schwarze 1807: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1808: }
1.119 schwarze 1809: if (*ep != '\0')
1810: ++ep;
1.50 schwarze 1811: }
1.149 schwarze 1812: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1813: }
1814:
1815: static enum rofferr
1816: roff_cond_text(ROFF_ARGS)
1817: {
1.37 schwarze 1818: char *ep;
1.71 schwarze 1819: int rr;
1.2 schwarze 1820:
1821: rr = r->last->rule;
1.37 schwarze 1822: roffnode_cleanscope(r);
1.1 schwarze 1823:
1.110 schwarze 1824: ep = buf->buf + pos;
1825: while ((ep = strchr(ep, '\\')) != NULL) {
1826: if (*(++ep) == '}') {
1.70 schwarze 1827: *ep = '&';
1.110 schwarze 1828: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1829: }
1.119 schwarze 1830: if (*ep != '\0')
1831: ++ep;
1.2 schwarze 1832: }
1.149 schwarze 1833: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1834: }
1835:
1.138 schwarze 1836: /* --- handling of numeric and conditional expressions -------------------- */
1837:
1.77 schwarze 1838: /*
1839: * Parse a single signed integer number. Stop at the first non-digit.
1840: * If there is at least one digit, return success and advance the
1841: * parse point, else return failure and let the parse point unchanged.
1842: * Ignore overflows, treat them just like the C language.
1843: */
1.56 schwarze 1844: static int
1.133 schwarze 1845: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 1846: {
1.133 schwarze 1847: int myres, scaled, n, p;
1.79 schwarze 1848:
1849: if (NULL == res)
1850: res = &myres;
1.56 schwarze 1851:
1852: p = *pos;
1853: n = v[p] == '-';
1.133 schwarze 1854: if (n || v[p] == '+')
1.56 schwarze 1855: p++;
1856:
1.133 schwarze 1857: if (flags & ROFFNUM_WHITE)
1858: while (isspace((unsigned char)v[p]))
1859: p++;
1860:
1.56 schwarze 1861: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 1862: *res = 10 * *res + v[p] - '0';
1.56 schwarze 1863: if (p == *pos + n)
1864: return 0;
1865:
1866: if (n)
1867: *res = -*res;
1868:
1.126 schwarze 1869: /* Each number may be followed by one optional scaling unit. */
1870:
1871: switch (v[p]) {
1872: case 'f':
1.133 schwarze 1873: scaled = *res * 65536;
1.126 schwarze 1874: break;
1875: case 'i':
1.133 schwarze 1876: scaled = *res * 240;
1.126 schwarze 1877: break;
1878: case 'c':
1.133 schwarze 1879: scaled = *res * 240 / 2.54;
1.126 schwarze 1880: break;
1881: case 'v':
1882: case 'P':
1.133 schwarze 1883: scaled = *res * 40;
1.126 schwarze 1884: break;
1885: case 'm':
1886: case 'n':
1.133 schwarze 1887: scaled = *res * 24;
1.126 schwarze 1888: break;
1889: case 'p':
1.133 schwarze 1890: scaled = *res * 10 / 3;
1.126 schwarze 1891: break;
1892: case 'u':
1.133 schwarze 1893: scaled = *res;
1.126 schwarze 1894: break;
1895: case 'M':
1.133 schwarze 1896: scaled = *res * 6 / 25;
1.126 schwarze 1897: break;
1898: default:
1.133 schwarze 1899: scaled = *res;
1.126 schwarze 1900: p--;
1901: break;
1902: }
1.133 schwarze 1903: if (flags & ROFFNUM_SCALE)
1904: *res = scaled;
1.126 schwarze 1905:
1906: *pos = p + 1;
1.149 schwarze 1907: return 1;
1.56 schwarze 1908: }
1909:
1.71 schwarze 1910: /*
1911: * Evaluate a string comparison condition.
1912: * The first character is the delimiter.
1913: * Succeed if the string up to its second occurrence
1914: * matches the string up to its third occurence.
1915: * Advance the cursor after the third occurrence
1916: * or lacking that, to the end of the line.
1917: */
1918: static int
1919: roff_evalstrcond(const char *v, int *pos)
1920: {
1921: const char *s1, *s2, *s3;
1922: int match;
1923:
1924: match = 0;
1925: s1 = v + *pos; /* initial delimiter */
1926: s2 = s1 + 1; /* for scanning the first string */
1927: s3 = strchr(s2, *s1); /* for scanning the second string */
1928:
1929: if (NULL == s3) /* found no middle delimiter */
1930: goto out;
1931:
1932: while ('\0' != *++s3) {
1933: if (*s2 != *s3) { /* mismatch */
1934: s3 = strchr(s3, *s1);
1935: break;
1936: }
1937: if (*s3 == *s1) { /* found the final delimiter */
1938: match = 1;
1939: break;
1940: }
1941: s2++;
1942: }
1943:
1944: out:
1945: if (NULL == s3)
1946: s3 = strchr(s2, '\0');
1.114 schwarze 1947: else if (*s3 != '\0')
1.71 schwarze 1948: s3++;
1949: *pos = s3 - v;
1.149 schwarze 1950: return match;
1.71 schwarze 1951: }
1952:
1.77 schwarze 1953: /*
1954: * Evaluate an optionally negated single character, numerical,
1955: * or string condition.
1956: */
1.71 schwarze 1957: static int
1.143 schwarze 1958: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 1959: {
1.143 schwarze 1960: char *cp, *name;
1961: size_t sz;
1.113 schwarze 1962: int number, savepos, wanttrue;
1.5 schwarze 1963:
1.71 schwarze 1964: if ('!' == v[*pos]) {
1965: wanttrue = 0;
1966: (*pos)++;
1967: } else
1968: wanttrue = 1;
1969:
1.5 schwarze 1970: switch (v[*pos]) {
1.112 schwarze 1971: case '\0':
1.149 schwarze 1972: return 0;
1.80 schwarze 1973: case 'n':
1974: case 'o':
1.5 schwarze 1975: (*pos)++;
1.149 schwarze 1976: return wanttrue;
1.80 schwarze 1977: case 'c':
1978: case 'd':
1979: case 'e':
1980: case 't':
1.111 schwarze 1981: case 'v':
1.5 schwarze 1982: (*pos)++;
1.149 schwarze 1983: return !wanttrue;
1.143 schwarze 1984: case 'r':
1985: cp = name = v + ++*pos;
1986: sz = roff_getname(r, &cp, ln, *pos);
1987: *pos = cp - v;
1.149 schwarze 1988: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.5 schwarze 1989: default:
1990: break;
1991: }
1992:
1.113 schwarze 1993: savepos = *pos;
1.133 schwarze 1994: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 1995: return (number > 0) == wanttrue;
1.113 schwarze 1996: else if (*pos == savepos)
1.149 schwarze 1997: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 1998: else
1.149 schwarze 1999: return 0;
1.5 schwarze 2000: }
2001:
1.2 schwarze 2002: static enum rofferr
1.21 schwarze 2003: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2004: {
1.30 schwarze 2005:
1.149 schwarze 2006: return ROFF_IGN;
1.21 schwarze 2007: }
2008:
2009: static enum rofferr
1.123 schwarze 2010: roff_insec(ROFF_ARGS)
2011: {
2012:
2013: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
2014: ln, ppos, roffs[tok].name);
1.149 schwarze 2015: return ROFF_IGN;
1.123 schwarze 2016: }
2017:
2018: static enum rofferr
2019: roff_unsupp(ROFF_ARGS)
2020: {
2021:
2022: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
2023: ln, ppos, roffs[tok].name);
1.149 schwarze 2024: return ROFF_IGN;
1.123 schwarze 2025: }
2026:
2027: static enum rofferr
1.2 schwarze 2028: roff_cond(ROFF_ARGS)
2029: {
1.46 schwarze 2030:
2031: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2032:
1.80 schwarze 2033: /*
1.35 schwarze 2034: * An `.el' has no conditional body: it will consume the value
2035: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2036: * defaults to DENY.
1.35 schwarze 2037: *
2038: * If we're not an `el', however, then evaluate the conditional.
2039: */
1.1 schwarze 2040:
1.110 schwarze 2041: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2042: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2043: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2044:
1.35 schwarze 2045: /*
2046: * An if-else will put the NEGATION of the current evaluated
2047: * conditional into the stack of rules.
2048: */
2049:
1.110 schwarze 2050: if (tok == ROFF_ie) {
1.96 schwarze 2051: if (r->rstackpos + 1 == r->rstacksz) {
2052: r->rstacksz += 16;
2053: r->rstack = mandoc_reallocarray(r->rstack,
2054: r->rstacksz, sizeof(int));
1.35 schwarze 2055: }
1.71 schwarze 2056: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2057: }
1.5 schwarze 2058:
2059: /* If the parent has false as its rule, then so do we. */
2060:
1.71 schwarze 2061: if (r->last->parent && !r->last->parent->rule)
2062: r->last->rule = 0;
1.5 schwarze 2063:
2064: /*
1.46 schwarze 2065: * Determine scope.
2066: * If there is nothing on the line after the conditional,
2067: * not even whitespace, use next-line scope.
1.5 schwarze 2068: */
1.2 schwarze 2069:
1.110 schwarze 2070: if (buf->buf[pos] == '\0') {
1.46 schwarze 2071: r->last->endspan = 2;
2072: goto out;
2073: }
2074:
1.110 schwarze 2075: while (buf->buf[pos] == ' ')
1.46 schwarze 2076: pos++;
2077:
2078: /* An opening brace requests multiline scope. */
1.2 schwarze 2079:
1.110 schwarze 2080: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2081: r->last->endspan = -1;
2082: pos += 2;
1.144 schwarze 2083: while (buf->buf[pos] == ' ')
2084: pos++;
1.46 schwarze 2085: goto out;
1.80 schwarze 2086: }
1.2 schwarze 2087:
2088: /*
1.46 schwarze 2089: * Anything else following the conditional causes
2090: * single-line scope. Warn if the scope contains
2091: * nothing but trailing whitespace.
1.2 schwarze 2092: */
2093:
1.110 schwarze 2094: if (buf->buf[pos] == '\0')
1.89 schwarze 2095: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
2096: ln, ppos, roffs[tok].name);
1.2 schwarze 2097:
1.46 schwarze 2098: r->last->endspan = 1;
1.1 schwarze 2099:
1.46 schwarze 2100: out:
1.2 schwarze 2101: *offs = pos;
1.149 schwarze 2102: return ROFF_RERUN;
1.1 schwarze 2103: }
2104:
1.2 schwarze 2105: static enum rofferr
1.7 schwarze 2106: roff_ds(ROFF_ARGS)
2107: {
1.85 schwarze 2108: char *string;
2109: const char *name;
2110: size_t namesz;
1.10 schwarze 2111:
1.123 schwarze 2112: /* Ignore groff compatibility mode for now. */
2113:
2114: if (tok == ROFF_ds1)
2115: tok = ROFF_ds;
2116: else if (tok == ROFF_as1)
2117: tok = ROFF_as;
2118:
1.10 schwarze 2119: /*
1.85 schwarze 2120: * The first word is the name of the string.
2121: * If it is empty or terminated by an escape sequence,
2122: * abort the `ds' request without defining anything.
1.10 schwarze 2123: */
1.7 schwarze 2124:
1.110 schwarze 2125: name = string = buf->buf + pos;
2126: if (*name == '\0')
1.149 schwarze 2127: return ROFF_IGN;
1.7 schwarze 2128:
1.85 schwarze 2129: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2130: if (name[namesz] == '\\')
1.149 schwarze 2131: return ROFF_IGN;
1.85 schwarze 2132:
2133: /* Read past the initial double-quote, if any. */
1.110 schwarze 2134: if (*string == '"')
1.7 schwarze 2135: string++;
2136:
1.10 schwarze 2137: /* The rest is the value. */
1.85 schwarze 2138: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2139: ROFF_as == tok);
1.149 schwarze 2140: return ROFF_IGN;
1.7 schwarze 2141: }
2142:
1.77 schwarze 2143: /*
2144: * Parse a single operator, one or two characters long.
2145: * If the operator is recognized, return success and advance the
2146: * parse point, else return failure and let the parse point unchanged.
2147: */
2148: static int
2149: roff_getop(const char *v, int *pos, char *res)
2150: {
2151:
2152: *res = v[*pos];
2153:
2154: switch (*res) {
1.80 schwarze 2155: case '+':
2156: case '-':
2157: case '*':
2158: case '/':
2159: case '%':
2160: case '&':
2161: case ':':
1.77 schwarze 2162: break;
2163: case '<':
2164: switch (v[*pos + 1]) {
1.80 schwarze 2165: case '=':
1.77 schwarze 2166: *res = 'l';
2167: (*pos)++;
2168: break;
1.80 schwarze 2169: case '>':
1.77 schwarze 2170: *res = '!';
2171: (*pos)++;
2172: break;
1.80 schwarze 2173: case '?':
1.77 schwarze 2174: *res = 'i';
2175: (*pos)++;
2176: break;
2177: default:
2178: break;
2179: }
2180: break;
2181: case '>':
2182: switch (v[*pos + 1]) {
1.80 schwarze 2183: case '=':
1.77 schwarze 2184: *res = 'g';
2185: (*pos)++;
2186: break;
1.80 schwarze 2187: case '?':
1.77 schwarze 2188: *res = 'a';
2189: (*pos)++;
2190: break;
2191: default:
2192: break;
2193: }
2194: break;
2195: case '=':
2196: if ('=' == v[*pos + 1])
2197: (*pos)++;
2198: break;
2199: default:
1.149 schwarze 2200: return 0;
1.77 schwarze 2201: }
2202: (*pos)++;
2203:
1.149 schwarze 2204: return *res;
1.77 schwarze 2205: }
2206:
2207: /*
2208: * Evaluate either a parenthesized numeric expression
2209: * or a single signed integer number.
2210: */
2211: static int
1.106 schwarze 2212: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2213: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2214: {
2215:
2216: if ('(' != v[*pos])
1.149 schwarze 2217: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2218:
2219: (*pos)++;
1.133 schwarze 2220: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2221: return 0;
1.77 schwarze 2222:
1.79 schwarze 2223: /*
2224: * Omission of the closing parenthesis
2225: * is an error in validation mode,
2226: * but ignored in evaluation mode.
2227: */
2228:
1.77 schwarze 2229: if (')' == v[*pos])
2230: (*pos)++;
1.79 schwarze 2231: else if (NULL == res)
1.149 schwarze 2232: return 0;
1.77 schwarze 2233:
1.149 schwarze 2234: return 1;
1.77 schwarze 2235: }
2236:
2237: /*
2238: * Evaluate a complete numeric expression.
2239: * Proceed left to right, there is no concept of precedence.
2240: */
2241: static int
1.106 schwarze 2242: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2243: int *pos, int *res, int flags)
1.77 schwarze 2244: {
2245: int mypos, operand2;
2246: char operator;
2247:
2248: if (NULL == pos) {
2249: mypos = 0;
2250: pos = &mypos;
2251: }
2252:
1.133 schwarze 2253: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2254: while (isspace((unsigned char)v[*pos]))
2255: (*pos)++;
2256:
1.133 schwarze 2257: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2258: return 0;
1.77 schwarze 2259:
2260: while (1) {
1.133 schwarze 2261: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2262: while (isspace((unsigned char)v[*pos]))
2263: (*pos)++;
2264:
2265: if ( ! roff_getop(v, pos, &operator))
2266: break;
2267:
1.133 schwarze 2268: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2269: while (isspace((unsigned char)v[*pos]))
2270: (*pos)++;
2271:
1.133 schwarze 2272: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2273: return 0;
1.77 schwarze 2274:
1.133 schwarze 2275: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2276: while (isspace((unsigned char)v[*pos]))
2277: (*pos)++;
1.79 schwarze 2278:
2279: if (NULL == res)
2280: continue;
1.77 schwarze 2281:
2282: switch (operator) {
1.80 schwarze 2283: case '+':
1.77 schwarze 2284: *res += operand2;
2285: break;
1.80 schwarze 2286: case '-':
1.77 schwarze 2287: *res -= operand2;
2288: break;
1.80 schwarze 2289: case '*':
1.77 schwarze 2290: *res *= operand2;
2291: break;
1.80 schwarze 2292: case '/':
1.116 schwarze 2293: if (operand2 == 0) {
1.106 schwarze 2294: mandoc_msg(MANDOCERR_DIVZERO,
2295: r->parse, ln, *pos, v);
2296: *res = 0;
2297: break;
2298: }
1.77 schwarze 2299: *res /= operand2;
2300: break;
1.80 schwarze 2301: case '%':
1.116 schwarze 2302: if (operand2 == 0) {
2303: mandoc_msg(MANDOCERR_DIVZERO,
2304: r->parse, ln, *pos, v);
2305: *res = 0;
2306: break;
2307: }
1.77 schwarze 2308: *res %= operand2;
2309: break;
1.80 schwarze 2310: case '<':
1.77 schwarze 2311: *res = *res < operand2;
2312: break;
1.80 schwarze 2313: case '>':
1.77 schwarze 2314: *res = *res > operand2;
2315: break;
1.80 schwarze 2316: case 'l':
1.77 schwarze 2317: *res = *res <= operand2;
2318: break;
1.80 schwarze 2319: case 'g':
1.77 schwarze 2320: *res = *res >= operand2;
2321: break;
1.80 schwarze 2322: case '=':
1.77 schwarze 2323: *res = *res == operand2;
2324: break;
1.80 schwarze 2325: case '!':
1.77 schwarze 2326: *res = *res != operand2;
2327: break;
1.80 schwarze 2328: case '&':
1.77 schwarze 2329: *res = *res && operand2;
2330: break;
1.80 schwarze 2331: case ':':
1.77 schwarze 2332: *res = *res || operand2;
2333: break;
1.80 schwarze 2334: case 'i':
1.77 schwarze 2335: if (operand2 < *res)
2336: *res = operand2;
2337: break;
1.80 schwarze 2338: case 'a':
1.77 schwarze 2339: if (operand2 > *res)
2340: *res = operand2;
2341: break;
2342: default:
2343: abort();
2344: }
2345: }
1.149 schwarze 2346: return 1;
1.77 schwarze 2347: }
2348:
1.138 schwarze 2349: /* --- register management ------------------------------------------------ */
2350:
1.52 schwarze 2351: void
1.60 schwarze 2352: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2353: {
1.52 schwarze 2354: struct roffreg *reg;
2355:
2356: /* Search for an existing register with the same name. */
2357: reg = r->regtab;
2358:
2359: while (reg && strcmp(name, reg->key.p))
2360: reg = reg->next;
1.41 schwarze 2361:
1.52 schwarze 2362: if (NULL == reg) {
2363: /* Create a new register. */
2364: reg = mandoc_malloc(sizeof(struct roffreg));
2365: reg->key.p = mandoc_strdup(name);
2366: reg->key.sz = strlen(name);
1.60 schwarze 2367: reg->val = 0;
1.52 schwarze 2368: reg->next = r->regtab;
2369: r->regtab = reg;
2370: }
2371:
1.60 schwarze 2372: if ('+' == sign)
2373: reg->val += val;
2374: else if ('-' == sign)
2375: reg->val -= val;
2376: else
2377: reg->val = val;
1.41 schwarze 2378: }
2379:
1.65 schwarze 2380: /*
2381: * Handle some predefined read-only number registers.
2382: * For now, return -1 if the requested register is not predefined;
2383: * in case a predefined read-only register having the value -1
2384: * were to turn up, another special value would have to be chosen.
2385: */
2386: static int
1.145 schwarze 2387: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2388: {
2389:
2390: switch (*name) {
1.145 schwarze 2391: case '$': /* Number of arguments of the last macro evaluated. */
1.149 schwarze 2392: return r->argc;
1.80 schwarze 2393: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2394: return 0;
1.80 schwarze 2395: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2396: return 1;
1.80 schwarze 2397: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2398: return 24;
1.80 schwarze 2399: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2400: return 0;
1.80 schwarze 2401: case 'T': /* Some output device is always defined. */
1.149 schwarze 2402: return 1;
1.80 schwarze 2403: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2404: return 40;
1.65 schwarze 2405: default:
1.149 schwarze 2406: return -1;
1.65 schwarze 2407: }
2408: }
2409:
1.53 schwarze 2410: int
1.52 schwarze 2411: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2412: {
1.52 schwarze 2413: struct roffreg *reg;
1.65 schwarze 2414: int val;
2415:
2416: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.145 schwarze 2417: val = roff_getregro(r, name + 1);
1.65 schwarze 2418: if (-1 != val)
1.149 schwarze 2419: return val;
1.65 schwarze 2420: }
1.52 schwarze 2421:
2422: for (reg = r->regtab; reg; reg = reg->next)
2423: if (0 == strcmp(name, reg->key.p))
1.149 schwarze 2424: return reg->val;
1.53 schwarze 2425:
1.149 schwarze 2426: return 0;
1.53 schwarze 2427: }
2428:
2429: static int
2430: roff_getregn(const struct roff *r, const char *name, size_t len)
2431: {
2432: struct roffreg *reg;
1.65 schwarze 2433: int val;
2434:
2435: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2436: val = roff_getregro(r, name + 1);
1.65 schwarze 2437: if (-1 != val)
1.149 schwarze 2438: return val;
1.65 schwarze 2439: }
1.53 schwarze 2440:
2441: for (reg = r->regtab; reg; reg = reg->next)
2442: if (len == reg->key.sz &&
2443: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2444: return reg->val;
1.143 schwarze 2445:
1.149 schwarze 2446: return 0;
1.143 schwarze 2447: }
2448:
2449: static int
2450: roff_hasregn(const struct roff *r, const char *name, size_t len)
2451: {
2452: struct roffreg *reg;
2453: int val;
2454:
2455: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2456: val = roff_getregro(r, name + 1);
1.143 schwarze 2457: if (-1 != val)
1.149 schwarze 2458: return 1;
1.143 schwarze 2459: }
2460:
2461: for (reg = r->regtab; reg; reg = reg->next)
2462: if (len == reg->key.sz &&
2463: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2464: return 1;
1.41 schwarze 2465:
1.149 schwarze 2466: return 0;
1.41 schwarze 2467: }
2468:
1.52 schwarze 2469: static void
2470: roff_freereg(struct roffreg *reg)
1.41 schwarze 2471: {
1.52 schwarze 2472: struct roffreg *old_reg;
1.41 schwarze 2473:
1.52 schwarze 2474: while (NULL != reg) {
2475: free(reg->key.p);
2476: old_reg = reg;
2477: reg = reg->next;
2478: free(old_reg);
2479: }
1.41 schwarze 2480: }
1.7 schwarze 2481:
2482: static enum rofferr
1.6 schwarze 2483: roff_nr(ROFF_ARGS)
1.1 schwarze 2484: {
1.85 schwarze 2485: char *key, *val;
2486: size_t keysz;
1.37 schwarze 2487: int iv;
1.60 schwarze 2488: char sign;
1.6 schwarze 2489:
1.110 schwarze 2490: key = val = buf->buf + pos;
2491: if (*key == '\0')
1.149 schwarze 2492: return ROFF_IGN;
1.85 schwarze 2493:
2494: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2495: if (key[keysz] == '\\')
1.149 schwarze 2496: return ROFF_IGN;
1.85 schwarze 2497: key[keysz] = '\0';
1.6 schwarze 2498:
1.60 schwarze 2499: sign = *val;
1.110 schwarze 2500: if (sign == '+' || sign == '-')
1.60 schwarze 2501: val++;
2502:
1.133 schwarze 2503: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2504: roff_setreg(r, key, iv, sign);
1.1 schwarze 2505:
1.149 schwarze 2506: return ROFF_IGN;
1.76 schwarze 2507: }
2508:
2509: static enum rofferr
2510: roff_rr(ROFF_ARGS)
2511: {
2512: struct roffreg *reg, **prev;
1.85 schwarze 2513: char *name, *cp;
2514: size_t namesz;
1.76 schwarze 2515:
1.110 schwarze 2516: name = cp = buf->buf + pos;
2517: if (*name == '\0')
1.149 schwarze 2518: return ROFF_IGN;
1.85 schwarze 2519: namesz = roff_getname(r, &cp, ln, pos);
2520: name[namesz] = '\0';
1.76 schwarze 2521:
2522: prev = &r->regtab;
2523: while (1) {
2524: reg = *prev;
1.110 schwarze 2525: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2526: break;
2527: prev = ®->next;
2528: }
1.110 schwarze 2529: if (reg != NULL) {
1.76 schwarze 2530: *prev = reg->next;
2531: free(reg->key.p);
2532: free(reg);
2533: }
1.149 schwarze 2534: return ROFF_IGN;
1.29 schwarze 2535: }
2536:
1.138 schwarze 2537: /* --- handler functions for roff requests -------------------------------- */
2538:
1.29 schwarze 2539: static enum rofferr
2540: roff_rm(ROFF_ARGS)
2541: {
2542: const char *name;
2543: char *cp;
1.85 schwarze 2544: size_t namesz;
1.29 schwarze 2545:
1.110 schwarze 2546: cp = buf->buf + pos;
2547: while (*cp != '\0') {
1.85 schwarze 2548: name = cp;
1.110 schwarze 2549: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2550: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.110 schwarze 2551: if (name[namesz] == '\\')
1.85 schwarze 2552: break;
1.29 schwarze 2553: }
1.149 schwarze 2554: return ROFF_IGN;
1.51 schwarze 2555: }
2556:
2557: static enum rofferr
2558: roff_it(ROFF_ARGS)
2559: {
2560: int iv;
2561:
2562: /* Parse the number of lines. */
1.133 schwarze 2563:
2564: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2565: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2566: ln, ppos, buf->buf + 1);
1.149 schwarze 2567: return ROFF_IGN;
1.51 schwarze 2568: }
2569:
1.134 schwarze 2570: while (isspace((unsigned char)buf->buf[pos]))
2571: pos++;
2572:
2573: /*
2574: * Arm the input line trap.
2575: * Special-casing "an-trap" is an ugly workaround to cope
2576: * with DocBook stupidly fiddling with man(7) internals.
2577: */
1.133 schwarze 2578:
1.51 schwarze 2579: roffit_lines = iv;
1.134 schwarze 2580: roffit_macro = mandoc_strdup(iv != 1 ||
2581: strcmp(buf->buf + pos, "an-trap") ?
2582: buf->buf + pos : "br");
1.149 schwarze 2583: return ROFF_IGN;
1.47 schwarze 2584: }
2585:
2586: static enum rofferr
2587: roff_Dd(ROFF_ARGS)
2588: {
2589: const char *const *cp;
2590:
1.99 schwarze 2591: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.47 schwarze 2592: for (cp = __mdoc_reserved; *cp; cp++)
2593: roff_setstr(r, *cp, NULL, 0);
2594:
1.99 schwarze 2595: if (r->format == 0)
2596: r->format = MPARSE_MDOC;
2597:
1.149 schwarze 2598: return ROFF_CONT;
1.47 schwarze 2599: }
2600:
2601: static enum rofferr
2602: roff_TH(ROFF_ARGS)
2603: {
2604: const char *const *cp;
2605:
1.99 schwarze 2606: if ((r->options & MPARSE_QUICK) == 0)
1.47 schwarze 2607: for (cp = __man_reserved; *cp; cp++)
2608: roff_setstr(r, *cp, NULL, 0);
2609:
1.99 schwarze 2610: if (r->format == 0)
2611: r->format = MPARSE_MAN;
2612:
1.149 schwarze 2613: return ROFF_CONT;
1.14 schwarze 2614: }
2615:
2616: static enum rofferr
1.27 schwarze 2617: roff_TE(ROFF_ARGS)
2618: {
2619:
2620: if (NULL == r->tbl)
1.94 schwarze 2621: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2622: ln, ppos, "TE");
1.130 schwarze 2623: else if ( ! tbl_end(&r->tbl)) {
2624: free(buf->buf);
2625: buf->buf = mandoc_strdup(".sp");
2626: buf->sz = 4;
1.149 schwarze 2627: return ROFF_REPARSE;
1.130 schwarze 2628: }
1.149 schwarze 2629: return ROFF_IGN;
1.27 schwarze 2630: }
2631:
2632: static enum rofferr
2633: roff_T_(ROFF_ARGS)
2634: {
2635:
2636: if (NULL == r->tbl)
1.94 schwarze 2637: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2638: ln, ppos, "T&");
1.27 schwarze 2639: else
2640: tbl_restart(ppos, ln, r->tbl);
2641:
1.149 schwarze 2642: return ROFF_IGN;
1.27 schwarze 2643: }
2644:
1.102 schwarze 2645: /*
2646: * Handle in-line equation delimiters.
2647: */
2648: static enum rofferr
1.110 schwarze 2649: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2650: {
1.105 schwarze 2651: char *cp1, *cp2;
2652: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2653:
1.102 schwarze 2654: /*
2655: * Outside equations, look for an opening delimiter.
2656: * If we are inside an equation, we already know it is
2657: * in-line, or this function wouldn't have been called;
2658: * so look for a closing delimiter.
2659: */
2660:
1.110 schwarze 2661: cp1 = buf->buf + pos;
1.102 schwarze 2662: cp2 = strchr(cp1, r->eqn == NULL ?
2663: r->last_eqn->odelim : r->last_eqn->cdelim);
2664: if (cp2 == NULL)
1.149 schwarze 2665: return ROFF_CONT;
1.102 schwarze 2666:
1.105 schwarze 2667: *cp2++ = '\0';
2668: bef_pr = bef_nl = aft_nl = aft_pr = "";
2669:
2670: /* Handle preceding text, protecting whitespace. */
2671:
1.110 schwarze 2672: if (*buf->buf != '\0') {
1.105 schwarze 2673: if (r->eqn == NULL)
2674: bef_pr = "\\&";
2675: bef_nl = "\n";
2676: }
2677:
2678: /*
2679: * Prepare replacing the delimiter with an equation macro
2680: * and drop leading white space from the equation.
2681: */
1.102 schwarze 2682:
1.105 schwarze 2683: if (r->eqn == NULL) {
2684: while (*cp2 == ' ')
2685: cp2++;
2686: mac = ".EQ";
2687: } else
2688: mac = ".EN";
2689:
2690: /* Handle following text, protecting whitespace. */
2691:
2692: if (*cp2 != '\0') {
2693: aft_nl = "\n";
2694: if (r->eqn != NULL)
2695: aft_pr = "\\&";
2696: }
2697:
2698: /* Do the actual replacement. */
2699:
1.110 schwarze 2700: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2701: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2702: free(buf->buf);
2703: buf->buf = cp1;
1.102 schwarze 2704:
2705: /* Toggle the in-line state of the eqn subsystem. */
2706:
2707: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2708: return ROFF_REPARSE;
1.41 schwarze 2709: }
2710:
1.107 schwarze 2711: static enum rofferr
2712: roff_EQ(ROFF_ARGS)
1.32 schwarze 2713: {
1.41 schwarze 2714: struct eqn_node *e;
1.32 schwarze 2715:
1.110 schwarze 2716: assert(r->eqn == NULL);
1.107 schwarze 2717: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2718:
1.102 schwarze 2719: if (r->last_eqn) {
1.32 schwarze 2720: r->last_eqn->next = e;
1.102 schwarze 2721: e->delim = r->last_eqn->delim;
2722: e->odelim = r->last_eqn->odelim;
2723: e->cdelim = r->last_eqn->cdelim;
2724: } else
1.32 schwarze 2725: r->first_eqn = r->last_eqn = e;
2726:
2727: r->eqn = r->last_eqn = e;
1.41 schwarze 2728:
1.110 schwarze 2729: if (buf->buf[pos] != '\0')
1.107 schwarze 2730: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2731: ".EQ %s", buf->buf + pos);
1.41 schwarze 2732:
1.149 schwarze 2733: return ROFF_IGN;
1.32 schwarze 2734: }
2735:
2736: static enum rofferr
2737: roff_EN(ROFF_ARGS)
2738: {
2739:
1.94 schwarze 2740: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.149 schwarze 2741: return ROFF_IGN;
1.32 schwarze 2742: }
2743:
2744: static enum rofferr
1.27 schwarze 2745: roff_TS(ROFF_ARGS)
2746: {
1.49 schwarze 2747: struct tbl_node *tbl;
1.27 schwarze 2748:
2749: if (r->tbl) {
1.94 schwarze 2750: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2751: ln, ppos, "TS breaks TS");
1.41 schwarze 2752: tbl_end(&r->tbl);
1.27 schwarze 2753: }
2754:
1.49 schwarze 2755: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2756:
2757: if (r->last_tbl)
1.49 schwarze 2758: r->last_tbl->next = tbl;
1.27 schwarze 2759: else
1.49 schwarze 2760: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2761:
1.49 schwarze 2762: r->tbl = r->last_tbl = tbl;
1.149 schwarze 2763: return ROFF_IGN;
1.123 schwarze 2764: }
2765:
2766: static enum rofferr
2767: roff_brp(ROFF_ARGS)
2768: {
2769:
2770: buf->buf[pos - 1] = '\0';
1.149 schwarze 2771: return ROFF_CONT;
1.27 schwarze 2772: }
2773:
2774: static enum rofferr
1.48 schwarze 2775: roff_cc(ROFF_ARGS)
2776: {
2777: const char *p;
2778:
1.110 schwarze 2779: p = buf->buf + pos;
1.48 schwarze 2780:
1.110 schwarze 2781: if (*p == '\0' || (r->control = *p++) == '.')
1.48 schwarze 2782: r->control = 0;
2783:
1.110 schwarze 2784: if (*p != '\0')
1.132 schwarze 2785: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2786: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 2787:
1.149 schwarze 2788: return ROFF_IGN;
1.48 schwarze 2789: }
2790:
2791: static enum rofferr
1.42 schwarze 2792: roff_tr(ROFF_ARGS)
2793: {
2794: const char *p, *first, *second;
2795: size_t fsz, ssz;
2796: enum mandoc_esc esc;
2797:
1.110 schwarze 2798: p = buf->buf + pos;
1.42 schwarze 2799:
1.110 schwarze 2800: if (*p == '\0') {
1.132 schwarze 2801: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 2802: return ROFF_IGN;
1.42 schwarze 2803: }
2804:
1.110 schwarze 2805: while (*p != '\0') {
1.42 schwarze 2806: fsz = ssz = 1;
2807:
2808: first = p++;
1.110 schwarze 2809: if (*first == '\\') {
1.42 schwarze 2810: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2811: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2812: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2813: ln, (int)(p - buf->buf), first);
1.149 schwarze 2814: return ROFF_IGN;
1.42 schwarze 2815: }
2816: fsz = (size_t)(p - first);
2817: }
2818:
2819: second = p++;
1.110 schwarze 2820: if (*second == '\\') {
1.42 schwarze 2821: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2822: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2823: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2824: ln, (int)(p - buf->buf), second);
1.149 schwarze 2825: return ROFF_IGN;
1.42 schwarze 2826: }
2827: ssz = (size_t)(p - second);
1.110 schwarze 2828: } else if (*second == '\0') {
1.132 schwarze 2829: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2830: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 2831: second = " ";
2832: p--;
2833: }
2834:
2835: if (fsz > 1) {
1.80 schwarze 2836: roff_setstrn(&r->xmbtab, first, fsz,
2837: second, ssz, 0);
1.42 schwarze 2838: continue;
2839: }
2840:
1.110 schwarze 2841: if (r->xtab == NULL)
1.80 schwarze 2842: r->xtab = mandoc_calloc(128,
2843: sizeof(struct roffstr));
1.42 schwarze 2844:
2845: free(r->xtab[(int)*first].p);
2846: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
2847: r->xtab[(int)*first].sz = ssz;
2848: }
2849:
1.149 schwarze 2850: return ROFF_IGN;
1.42 schwarze 2851: }
2852:
2853: static enum rofferr
1.14 schwarze 2854: roff_so(ROFF_ARGS)
2855: {
1.121 schwarze 2856: char *name, *cp;
1.15 schwarze 2857:
1.110 schwarze 2858: name = buf->buf + pos;
1.97 schwarze 2859: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 2860:
1.22 schwarze 2861: /*
2862: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
2863: * opening anything that's not in our cwd or anything beneath
2864: * it. Thus, explicitly disallow traversing up the file-system
2865: * or using absolute paths.
2866: */
2867:
1.110 schwarze 2868: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 2869: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
2870: ".so %s", name);
1.121 schwarze 2871: buf->sz = mandoc_asprintf(&cp,
2872: ".sp\nSee the file %s.\n.sp", name) + 1;
2873: free(buf->buf);
2874: buf->buf = cp;
2875: *offs = 0;
1.149 schwarze 2876: return ROFF_REPARSE;
1.14 schwarze 2877: }
2878:
2879: *offs = pos;
1.149 schwarze 2880: return ROFF_SO;
1.7 schwarze 2881: }
2882:
1.138 schwarze 2883: /* --- user defined strings and macros ------------------------------------ */
2884:
1.16 schwarze 2885: static enum rofferr
2886: roff_userdef(ROFF_ARGS)
1.12 schwarze 2887: {
1.135 schwarze 2888: const char *arg[9], *ap;
1.16 schwarze 2889: char *cp, *n1, *n2;
1.164 schwarze 2890: int expand_count, i, ib, ie;
1.135 schwarze 2891: size_t asz, rsz;
1.12 schwarze 2892:
1.16 schwarze 2893: /*
2894: * Collect pointers to macro argument strings
1.61 schwarze 2895: * and NUL-terminate them.
1.16 schwarze 2896: */
1.135 schwarze 2897:
1.145 schwarze 2898: r->argc = 0;
1.110 schwarze 2899: cp = buf->buf + pos;
1.145 schwarze 2900: for (i = 0; i < 9; i++) {
2901: if (*cp == '\0')
2902: arg[i] = "";
2903: else {
2904: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
2905: r->argc = i + 1;
2906: }
2907: }
1.16 schwarze 2908:
2909: /*
2910: * Expand macro arguments.
1.12 schwarze 2911: */
1.135 schwarze 2912:
2913: buf->sz = strlen(r->current_string) + 1;
1.164 schwarze 2914: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.135 schwarze 2915: memcpy(n1, r->current_string, buf->sz);
1.164 schwarze 2916: expand_count = 0;
1.135 schwarze 2917: while (*cp != '\0') {
2918:
2919: /* Scan ahead for the next argument invocation. */
2920:
2921: if (*cp++ != '\\')
2922: continue;
2923: if (*cp++ != '$')
2924: continue;
1.146 schwarze 2925: if (*cp == '*') { /* \\$* inserts all arguments */
2926: ib = 0;
2927: ie = r->argc - 1;
2928: } else { /* \\$1 .. \\$9 insert one argument */
2929: ib = ie = *cp - '1';
2930: if (ib < 0 || ib > 8)
2931: continue;
2932: }
1.135 schwarze 2933: cp -= 2;
1.164 schwarze 2934:
2935: /*
2936: * Prevent infinite recursion.
2937: */
2938:
2939: if (cp >= n2)
2940: expand_count = 1;
2941: else if (++expand_count > EXPAND_LIMIT) {
2942: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
2943: ln, (int)(cp - n1), NULL);
1.165 schwarze 2944: free(buf->buf);
2945: buf->buf = n1;
1.164 schwarze 2946: return ROFF_IGN;
2947: }
1.135 schwarze 2948:
2949: /*
2950: * Determine the size of the expanded argument,
2951: * taking escaping of quotes into account.
2952: */
2953:
1.146 schwarze 2954: asz = ie > ib ? ie - ib : 0; /* for blanks */
2955: for (i = ib; i <= ie; i++) {
2956: for (ap = arg[i]; *ap != '\0'; ap++) {
2957: asz++;
2958: if (*ap == '"')
2959: asz += 3;
2960: }
1.135 schwarze 2961: }
2962: if (asz != 3) {
2963:
2964: /*
2965: * Determine the size of the rest of the
2966: * unexpanded macro, including the NUL.
2967: */
2968:
2969: rsz = buf->sz - (cp - n1) - 3;
2970:
2971: /*
2972: * When shrinking, move before
2973: * releasing the storage.
2974: */
2975:
2976: if (asz < 3)
2977: memmove(cp + asz, cp + 3, rsz);
2978:
2979: /*
2980: * Resize the storage for the macro
2981: * and readjust the parse pointer.
2982: */
2983:
2984: buf->sz += asz - 3;
2985: n2 = mandoc_realloc(n1, buf->sz);
2986: cp = n2 + (cp - n1);
2987: n1 = n2;
2988:
2989: /*
2990: * When growing, make room
2991: * for the expanded argument.
2992: */
2993:
2994: if (asz > 3)
2995: memmove(cp + asz, cp + 3, rsz);
2996: }
2997:
2998: /* Copy the expanded argument, escaping quotes. */
2999:
3000: n2 = cp;
1.146 schwarze 3001: for (i = ib; i <= ie; i++) {
3002: for (ap = arg[i]; *ap != '\0'; ap++) {
3003: if (*ap == '"') {
3004: memcpy(n2, "\\(dq", 4);
3005: n2 += 4;
3006: } else
3007: *n2++ = *ap;
3008: }
3009: if (i < ie)
3010: *n2++ = ' ';
1.16 schwarze 3011: }
1.12 schwarze 3012: }
3013:
1.16 schwarze 3014: /*
3015: * Replace the macro invocation
3016: * by the expanded macro.
3017: */
1.135 schwarze 3018:
1.110 schwarze 3019: free(buf->buf);
3020: buf->buf = n1;
1.120 schwarze 3021: *offs = 0;
1.16 schwarze 3022:
1.149 schwarze 3023: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3024: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3025: }
1.28 schwarze 3026:
1.85 schwarze 3027: static size_t
1.28 schwarze 3028: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3029: {
3030: char *name, *cp;
1.85 schwarze 3031: size_t namesz;
1.28 schwarze 3032:
3033: name = *cpp;
3034: if ('\0' == *name)
1.149 schwarze 3035: return 0;
1.28 schwarze 3036:
1.85 schwarze 3037: /* Read until end of name and terminate it with NUL. */
3038: for (cp = name; 1; cp++) {
3039: if ('\0' == *cp || ' ' == *cp) {
3040: namesz = cp - name;
3041: break;
3042: }
1.28 schwarze 3043: if ('\\' != *cp)
3044: continue;
1.88 schwarze 3045: namesz = cp - name;
3046: if ('{' == cp[1] || '}' == cp[1])
3047: break;
1.28 schwarze 3048: cp++;
3049: if ('\\' == *cp)
3050: continue;
1.97 schwarze 3051: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3052: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3053: mandoc_escape((const char **)&cp, NULL, NULL);
3054: break;
1.28 schwarze 3055: }
3056:
3057: /* Read past spaces. */
3058: while (' ' == *cp)
3059: cp++;
3060:
3061: *cpp = cp;
1.149 schwarze 3062: return namesz;
1.28 schwarze 3063: }
3064:
1.16 schwarze 3065: /*
3066: * Store *string into the user-defined string called *name.
3067: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3068: * append == 0: replace mode
3069: * append == 1: single-line append mode
3070: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3071: */
1.8 schwarze 3072: static void
1.16 schwarze 3073: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3074: int append)
1.7 schwarze 3075: {
1.42 schwarze 3076:
3077: roff_setstrn(&r->strtab, name, strlen(name), string,
1.80 schwarze 3078: string ? strlen(string) : 0, append);
1.42 schwarze 3079: }
3080:
3081: static void
3082: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3083: const char *string, size_t stringsz, int append)
1.42 schwarze 3084: {
3085: struct roffkv *n;
3086: char *c;
3087: int i;
3088: size_t oldch, newch;
1.7 schwarze 3089:
1.16 schwarze 3090: /* Search for an existing string with the same name. */
1.42 schwarze 3091: n = *r;
3092:
1.84 schwarze 3093: while (n && (namesz != n->key.sz ||
3094: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3095: n = n->next;
1.8 schwarze 3096:
3097: if (NULL == n) {
1.16 schwarze 3098: /* Create a new string table entry. */
1.42 schwarze 3099: n = mandoc_malloc(sizeof(struct roffkv));
3100: n->key.p = mandoc_strndup(name, namesz);
3101: n->key.sz = namesz;
3102: n->val.p = NULL;
3103: n->val.sz = 0;
3104: n->next = *r;
3105: *r = n;
1.66 schwarze 3106: } else if (0 == append) {
1.42 schwarze 3107: free(n->val.p);
3108: n->val.p = NULL;
3109: n->val.sz = 0;
1.16 schwarze 3110: }
3111:
3112: if (NULL == string)
3113: return;
3114:
3115: /*
3116: * One additional byte for the '\n' in multiline mode,
3117: * and one for the terminating '\0'.
3118: */
1.66 schwarze 3119: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3120:
3121: if (NULL == n->val.p) {
3122: n->val.p = mandoc_malloc(newch);
3123: *n->val.p = '\0';
1.16 schwarze 3124: oldch = 0;
3125: } else {
1.42 schwarze 3126: oldch = n->val.sz;
3127: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3128: }
3129:
3130: /* Skip existing content in the destination buffer. */
1.42 schwarze 3131: c = n->val.p + (int)oldch;
1.16 schwarze 3132:
3133: /* Append new content to the destination buffer. */
1.42 schwarze 3134: i = 0;
3135: while (i < (int)stringsz) {
1.16 schwarze 3136: /*
3137: * Rudimentary roff copy mode:
3138: * Handle escaped backslashes.
3139: */
1.42 schwarze 3140: if ('\\' == string[i] && '\\' == string[i + 1])
3141: i++;
3142: *c++ = string[i++];
1.16 schwarze 3143: }
1.8 schwarze 3144:
1.16 schwarze 3145: /* Append terminating bytes. */
1.66 schwarze 3146: if (1 < append)
1.16 schwarze 3147: *c++ = '\n';
1.42 schwarze 3148:
1.16 schwarze 3149: *c = '\0';
1.42 schwarze 3150: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3151: }
3152:
1.8 schwarze 3153: static const char *
3154: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.7 schwarze 3155: {
1.42 schwarze 3156: const struct roffkv *n;
1.64 schwarze 3157: int i;
1.7 schwarze 3158:
1.42 schwarze 3159: for (n = r->strtab; n; n = n->next)
1.80 schwarze 3160: if (0 == strncmp(name, n->key.p, len) &&
3161: '\0' == n->key.p[(int)len])
1.149 schwarze 3162: return n->val.p;
1.64 schwarze 3163:
3164: for (i = 0; i < PREDEFS_MAX; i++)
3165: if (0 == strncmp(name, predefs[i].name, len) &&
3166: '\0' == predefs[i].name[(int)len])
1.149 schwarze 3167: return predefs[i].str;
1.8 schwarze 3168:
1.149 schwarze 3169: return NULL;
1.7 schwarze 3170: }
3171:
1.8 schwarze 3172: static void
1.42 schwarze 3173: roff_freestr(struct roffkv *r)
1.7 schwarze 3174: {
1.42 schwarze 3175: struct roffkv *n, *nn;
1.7 schwarze 3176:
1.42 schwarze 3177: for (n = r; n; n = nn) {
3178: free(n->key.p);
3179: free(n->val.p);
1.7 schwarze 3180: nn = n->next;
3181: free(n);
3182: }
1.27 schwarze 3183: }
1.138 schwarze 3184:
3185: /* --- accessors and utility functions ------------------------------------ */
1.27 schwarze 3186:
3187: const struct tbl_span *
3188: roff_span(const struct roff *r)
3189: {
1.80 schwarze 3190:
1.149 schwarze 3191: return r->tbl ? tbl_span(r->tbl) : NULL;
1.32 schwarze 3192: }
3193:
3194: const struct eqn *
3195: roff_eqn(const struct roff *r)
3196: {
1.80 schwarze 3197:
1.149 schwarze 3198: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.42 schwarze 3199: }
3200:
3201: /*
3202: * Duplicate an input string, making the appropriate character
3203: * conversations (as stipulated by `tr') along the way.
3204: * Returns a heap-allocated string with all the replacements made.
3205: */
3206: char *
3207: roff_strdup(const struct roff *r, const char *p)
3208: {
3209: const struct roffkv *cp;
3210: char *res;
3211: const char *pp;
3212: size_t ssz, sz;
3213: enum mandoc_esc esc;
3214:
3215: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3216: return mandoc_strdup(p);
1.42 schwarze 3217: else if ('\0' == *p)
1.149 schwarze 3218: return mandoc_strdup("");
1.42 schwarze 3219:
3220: /*
3221: * Step through each character looking for term matches
3222: * (remember that a `tr' can be invoked with an escape, which is
3223: * a glyph but the escape is multi-character).
3224: * We only do this if the character hash has been initialised
3225: * and the string is >0 length.
3226: */
3227:
3228: res = NULL;
3229: ssz = 0;
3230:
3231: while ('\0' != *p) {
1.161 schwarze 3232: assert((unsigned int)*p < 128);
3233: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3234: sz = r->xtab[(int)*p].sz;
3235: res = mandoc_realloc(res, ssz + sz + 1);
3236: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3237: ssz += sz;
3238: p++;
3239: continue;
3240: } else if ('\\' != *p) {
3241: res = mandoc_realloc(res, ssz + 2);
3242: res[ssz++] = *p++;
3243: continue;
3244: }
3245:
3246: /* Search for term matches. */
3247: for (cp = r->xmbtab; cp; cp = cp->next)
3248: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3249: break;
3250:
3251: if (NULL != cp) {
3252: /*
3253: * A match has been found.
3254: * Append the match to the array and move
3255: * forward by its keysize.
3256: */
1.80 schwarze 3257: res = mandoc_realloc(res,
3258: ssz + cp->val.sz + 1);
1.42 schwarze 3259: memcpy(res + ssz, cp->val.p, cp->val.sz);
3260: ssz += cp->val.sz;
3261: p += (int)cp->key.sz;
3262: continue;
3263: }
3264:
3265: /*
3266: * Handle escapes carefully: we need to copy
3267: * over just the escape itself, or else we might
3268: * do replacements within the escape itself.
3269: * Make sure to pass along the bogus string.
3270: */
3271: pp = p++;
3272: esc = mandoc_escape(&p, NULL, NULL);
3273: if (ESCAPE_ERROR == esc) {
3274: sz = strlen(pp);
3275: res = mandoc_realloc(res, ssz + sz + 1);
3276: memcpy(res + ssz, pp, sz);
3277: break;
3278: }
1.80 schwarze 3279: /*
3280: * We bail out on bad escapes.
1.42 schwarze 3281: * No need to warn: we already did so when
3282: * roff_res() was called.
3283: */
3284: sz = (int)(p - pp);
3285: res = mandoc_realloc(res, ssz + sz + 1);
3286: memcpy(res + ssz, pp, sz);
3287: ssz += sz;
3288: }
3289:
3290: res[(int)ssz] = '\0';
1.149 schwarze 3291: return res;
1.99 schwarze 3292: }
3293:
3294: int
3295: roff_getformat(const struct roff *r)
3296: {
3297:
1.149 schwarze 3298: return r->format;
1.48 schwarze 3299: }
3300:
3301: /*
1.80 schwarze 3302: * Find out whether a line is a macro line or not.
1.48 schwarze 3303: * If it is, adjust the current position and return one; if it isn't,
3304: * return zero and don't change the current position.
3305: * If the control character has been set with `.cc', then let that grain
3306: * precedence.
3307: * This is slighly contrary to groff, where using the non-breaking
3308: * control character when `cc' has been invoked will cause the
3309: * non-breaking macro contents to be printed verbatim.
3310: */
3311: int
3312: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3313: {
3314: int pos;
3315:
3316: pos = *ppos;
3317:
3318: if (0 != r->control && cp[pos] == r->control)
3319: pos++;
3320: else if (0 != r->control)
1.149 schwarze 3321: return 0;
1.48 schwarze 3322: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3323: pos += 2;
3324: else if ('.' == cp[pos] || '\'' == cp[pos])
3325: pos++;
3326: else
1.149 schwarze 3327: return 0;
1.48 schwarze 3328:
3329: while (' ' == cp[pos] || '\t' == cp[pos])
3330: pos++;
3331:
3332: *ppos = pos;
1.149 schwarze 3333: return 1;
1.1 schwarze 3334: }
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