Annotation of mandoc/roff.c, Revision 1.294
1.294 ! schwarze 1: /* $Id: roff.c,v 1.293 2017/03/09 15:29:35 schwarze Exp $ */
1.1 kristaps 2: /*
1.267 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.287 schwarze 4: * Copyright (c) 2010-2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.66 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.106 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.66 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.106 kristaps 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.66 kristaps 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.
1.1 kristaps 17: */
1.66 kristaps 18: #include "config.h"
1.225 schwarze 19:
20: #include <sys/types.h>
1.30 kristaps 21:
1.67 kristaps 22: #include <assert.h>
1.85 kristaps 23: #include <ctype.h>
1.245 schwarze 24: #include <limits.h>
1.178 schwarze 25: #include <stdio.h>
1.1 kristaps 26: #include <stdlib.h>
1.67 kristaps 27: #include <string.h>
1.1 kristaps 28:
1.67 kristaps 29: #include "mandoc.h"
1.201 schwarze 30: #include "mandoc_aux.h"
1.265 schwarze 31: #include "roff.h"
1.226 schwarze 32: #include "libmandoc.h"
1.266 schwarze 33: #include "roff_int.h"
1.109 kristaps 34: #include "libroff.h"
1.82 kristaps 35:
1.170 schwarze 36: /* Maximum number of string expansions per line, to break infinite loops. */
37: #define EXPAND_LIMIT 1000
38:
1.266 schwarze 39: /* --- data types --------------------------------------------------------- */
40:
1.147 kristaps 41: /*
1.167 kristaps 42: * An incredibly-simple string buffer.
43: */
1.94 kristaps 44: struct roffstr {
1.167 kristaps 45: char *p; /* nil-terminated buffer */
46: size_t sz; /* saved strlen(p) */
1.166 kristaps 47: };
48:
49: /*
1.167 kristaps 50: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 51: */
52: struct roffkv {
53: struct roffstr key;
54: struct roffstr val;
55: struct roffkv *next; /* next in list */
1.94 kristaps 56: };
57:
1.180 schwarze 58: /*
59: * A single number register as part of a singly-linked list.
60: */
61: struct roffreg {
62: struct roffstr key;
1.181 schwarze 63: int val;
1.180 schwarze 64: struct roffreg *next;
65: };
66:
1.67 kristaps 67: struct roff {
1.128 kristaps 68: struct mparse *parse; /* parse point */
1.67 kristaps 69: struct roffnode *last; /* leaf of stack */
1.223 schwarze 70: int *rstack; /* stack of inverted `ie' values */
1.180 schwarze 71: struct roffreg *regtab; /* number registers */
1.166 kristaps 72: struct roffkv *strtab; /* user-defined strings & macros */
1.167 kristaps 73: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
74: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 75: const char *current_string; /* value of last called user macro */
1.118 kristaps 76: struct tbl_node *first_tbl; /* first table parsed */
77: struct tbl_node *last_tbl; /* last table parsed */
78: struct tbl_node *tbl; /* current table being parsed */
1.125 kristaps 79: struct eqn_node *last_eqn; /* last equation parsed */
80: struct eqn_node *first_eqn; /* first equation parsed */
81: struct eqn_node *eqn; /* current equation being parsed */
1.230 schwarze 82: int eqn_inline; /* current equation is inline */
1.223 schwarze 83: int options; /* parse options */
84: int rstacksz; /* current size limit of rstack */
85: int rstackpos; /* position in rstack */
1.227 schwarze 86: int format; /* current file in mdoc or man format */
1.273 schwarze 87: int argc; /* number of args of the last macro */
1.223 schwarze 88: char control; /* control character */
1.79 kristaps 89: };
90:
1.67 kristaps 91: struct roffnode {
1.294 ! schwarze 92: enum roff_tok tok; /* type of node */
1.67 kristaps 93: struct roffnode *parent; /* up one in stack */
94: int line; /* parse line */
95: int col; /* parse col */
1.106 kristaps 96: char *name; /* node name, e.g. macro name */
1.79 kristaps 97: char *end; /* end-rules: custom token */
98: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 99: int rule; /* current evaluation rule */
1.67 kristaps 100: };
101:
102: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 ! schwarze 103: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 104: struct buf *buf, /* input buffer */ \
1.67 kristaps 105: int ln, /* parse line */ \
1.75 kristaps 106: int ppos, /* original pos in buffer */ \
107: int pos, /* current pos in buffer */ \
1.74 kristaps 108: int *offs /* reset offset of buffer data */
1.67 kristaps 109:
110: typedef enum rofferr (*roffproc)(ROFF_ARGS);
111:
112: struct roffmac {
113: const char *name; /* macro name */
1.79 kristaps 114: roffproc proc; /* process new macro */
115: roffproc text; /* process as child text of macro */
116: roffproc sub; /* process as child of macro */
117: int flags;
118: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.85 kristaps 119: struct roffmac *next;
1.67 kristaps 120: };
121:
1.141 kristaps 122: struct predef {
123: const char *name; /* predefined input name */
124: const char *str; /* replacement symbol */
125: };
126:
127: #define PREDEF(__name, __str) \
128: { (__name), (__str) },
129:
1.266 schwarze 130: /* --- function prototypes ------------------------------------------------ */
131:
1.294 ! schwarze 132: static enum roff_tok roffhash_find(const char *, size_t);
1.155 kristaps 133: static void roffhash_init(void);
134: static void roffnode_cleanscope(struct roff *);
135: static void roffnode_pop(struct roff *);
1.294 ! schwarze 136: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 137: const char *, int, int);
1.80 kristaps 138: static enum rofferr roff_block(ROFF_ARGS);
139: static enum rofferr roff_block_text(ROFF_ARGS);
140: static enum rofferr roff_block_sub(ROFF_ARGS);
1.251 schwarze 141: static enum rofferr roff_brp(ROFF_ARGS);
1.80 kristaps 142: static enum rofferr roff_cblock(ROFF_ARGS);
1.174 kristaps 143: static enum rofferr roff_cc(ROFF_ARGS);
1.195 schwarze 144: static void roff_ccond(struct roff *, int, int);
1.82 kristaps 145: static enum rofferr roff_cond(ROFF_ARGS);
146: static enum rofferr roff_cond_text(ROFF_ARGS);
147: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.92 schwarze 148: static enum rofferr roff_ds(ROFF_ARGS);
1.238 schwarze 149: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 150: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 151: static int roff_evalnum(struct roff *, int,
152: const char *, int *, int *, int);
153: static int roff_evalpar(struct roff *, int,
1.261 schwarze 154: const char *, int *, int *, int);
1.198 schwarze 155: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 156: static void roff_free1(struct roff *);
1.180 schwarze 157: static void roff_freereg(struct roffreg *);
1.167 kristaps 158: static void roff_freestr(struct roffkv *);
1.212 schwarze 159: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 160: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 161: static int roff_getop(const char *, int *, char *);
1.181 schwarze 162: static int roff_getregn(const struct roff *,
163: const char *, size_t);
1.273 schwarze 164: static int roff_getregro(const struct roff *,
165: const char *name);
1.207 schwarze 166: static const char *roff_getstrn(const struct roff *,
1.94 kristaps 167: const char *, size_t);
1.271 schwarze 168: static int roff_hasregn(const struct roff *,
169: const char *, size_t);
1.251 schwarze 170: static enum rofferr roff_insec(ROFF_ARGS);
1.178 schwarze 171: static enum rofferr roff_it(ROFF_ARGS);
1.103 kristaps 172: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.265 schwarze 173: static void roff_man_alloc1(struct roff_man *);
174: static void roff_man_free1(struct roff_man *);
1.89 kristaps 175: static enum rofferr roff_nr(ROFF_ARGS);
1.294 ! schwarze 176: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 177: int, int);
1.238 schwarze 178: static enum rofferr roff_parsetext(struct buf *, int, int *);
179: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.122 schwarze 180: static enum rofferr roff_rm(ROFF_ARGS);
1.203 schwarze 181: static enum rofferr roff_rr(ROFF_ARGS);
1.94 kristaps 182: static void roff_setstr(struct roff *,
1.106 kristaps 183: const char *, const char *, int);
1.207 schwarze 184: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 185: size_t, const char *, size_t, int);
1.105 kristaps 186: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 187: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 188: static enum rofferr roff_Dd(ROFF_ARGS);
189: static enum rofferr roff_TH(ROFF_ARGS);
1.109 kristaps 190: static enum rofferr roff_TE(ROFF_ARGS);
191: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 192: static enum rofferr roff_EQ(ROFF_ARGS);
193: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 194: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 195: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 196: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 197:
1.266 schwarze 198: /* --- constant data ------------------------------------------------------ */
199:
1.155 kristaps 200: /* See roffhash_find() */
1.85 kristaps 201:
202: #define ASCII_HI 126
203: #define ASCII_LO 33
204: #define HASHWIDTH (ASCII_HI - ASCII_LO + 1)
205:
1.261 schwarze 206: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
207: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
208:
1.294 ! schwarze 209: const char *__roff_name[MAN_MAX + 1] = {
! 210: "ab", "ad", "af", "aln",
! 211: "als", "am", "am1", "ami",
! 212: "ami1", "as", "as1", "asciify",
! 213: "backtrace", "bd", "bleedat", "blm",
! 214: "box", "boxa", "bp", "BP",
! 215: "break", "breakchar", "brnl", "brp",
! 216: "brpnl", "c2", "cc", "ce",
! 217: "cf", "cflags", "ch", "char",
! 218: "chop", "class", "close", "CL",
! 219: "color", "composite", "continue", "cp",
! 220: "cropat", "cs", "cu", "da",
! 221: "dch", "Dd", "de", "de1",
! 222: "defcolor", "dei", "dei1", "device",
! 223: "devicem", "di", "do", "ds",
! 224: "ds1", "dwh", "dt", "ec",
! 225: "ecr", "ecs", "el", "em",
! 226: "EN", "eo", "EP", "EQ",
! 227: "errprint", "ev", "evc", "ex",
! 228: "fallback", "fam", "fc", "fchar",
! 229: "fcolor", "fdeferlig", "feature", "fkern",
! 230: "fl", "flig", "fp", "fps",
! 231: "fschar", "fspacewidth", "fspecial", "ftr",
! 232: "fzoom", "gcolor", "hc", "hcode",
! 233: "hidechar", "hla", "hlm", "hpf",
! 234: "hpfa", "hpfcode", "hw", "hy",
! 235: "hylang", "hylen", "hym", "hypp",
! 236: "hys", "ie", "if", "ig",
! 237: "index", "it", "itc", "IX",
! 238: "kern", "kernafter", "kernbefore", "kernpair",
! 239: "lc", "lc_ctype", "lds", "length",
! 240: "letadj", "lf", "lg", "lhang",
! 241: "linetabs", "lnr", "lnrf", "lpfx",
! 242: "ls", "lsm", "lt", "mc",
! 243: "mediasize", "minss", "mk", "mso",
! 244: "na", "ne", "nh", "nhychar",
! 245: "nm", "nn", "nop", "nr",
! 246: "nrf", "nroff", "ns", "nx",
! 247: "open", "opena", "os", "output",
! 248: "padj", "papersize", "pc", "pev",
! 249: "pi", "PI", "pl", "pm",
! 250: "pn", "pnr", "po", "ps",
! 251: "psbb", "pshape", "pso", "ptr",
! 252: "pvs", "rchar", "rd", "recursionlimit",
! 253: "return", "rfschar", "rhang", "rj",
! 254: "rm", "rn", "rnn", "rr",
! 255: "rs", "rt", "schar", "sentchar",
! 256: "shc", "shift", "sizes", "so",
! 257: "spacewidth", "special", "spreadwarn", "ss",
! 258: "sty", "substring", "sv", "sy",
! 259: "T&", "ta", "tc", "TE",
! 260: "TH", "ti", "tkf", "tl",
! 261: "tm", "tm1", "tmc", "tr",
! 262: "track", "transchar", "trf", "trimat",
! 263: "trin", "trnt", "troff", "TS",
! 264: "uf", "ul", "unformat", "unwatch",
! 265: "unwatchn", "vpt", "vs", "warn",
! 266: "warnscale", "watch", "watchlength", "watchn",
! 267: "wh", "while", "write", "writec",
! 268: "writem", "xflag", ".", NULL,
! 269: "text",
! 270: "Dd", "Dt", "Os", "Sh",
! 271: "Ss", "Pp", "D1", "Dl",
! 272: "Bd", "Ed", "Bl", "El",
! 273: "It", "Ad", "An", "Ap",
! 274: "Ar", "Cd", "Cm", "Dv",
! 275: "Er", "Ev", "Ex", "Fa",
! 276: "Fd", "Fl", "Fn", "Ft",
! 277: "Ic", "In", "Li", "Nd",
! 278: "Nm", "Op", "Ot", "Pa",
! 279: "Rv", "St", "Va", "Vt",
! 280: "Xr", "%A", "%B", "%D",
! 281: "%I", "%J", "%N", "%O",
! 282: "%P", "%R", "%T", "%V",
! 283: "Ac", "Ao", "Aq", "At",
! 284: "Bc", "Bf", "Bo", "Bq",
! 285: "Bsx", "Bx", "Db", "Dc",
! 286: "Do", "Dq", "Ec", "Ef",
! 287: "Em", "Eo", "Fx", "Ms",
! 288: "No", "Ns", "Nx", "Ox",
! 289: "Pc", "Pf", "Po", "Pq",
! 290: "Qc", "Ql", "Qo", "Qq",
! 291: "Re", "Rs", "Sc", "So",
! 292: "Sq", "Sm", "Sx", "Sy",
! 293: "Tn", "Ux", "Xc", "Xo",
! 294: "Fo", "Fc", "Oo", "Oc",
! 295: "Bk", "Ek", "Bt", "Hf",
! 296: "Fr", "Ud", "Lb", "Lp",
! 297: "Lk", "Mt", "Brq", "Bro",
! 298: "Brc", "%C", "Es", "En",
! 299: "Dx", "%Q", "br", "sp",
! 300: "%U", "Ta", "ll", NULL,
! 301: "TH", "SH", "SS", "TP",
! 302: "LP", "PP", "P", "IP",
! 303: "HP", "SM", "SB", "BI",
! 304: "IB", "BR", "RB", "R",
! 305: "B", "I", "IR", "RI",
! 306: "br", "sp", "nf", "fi",
! 307: "RE", "RS", "DT", "UC",
! 308: "PD", "AT", "in", "ft",
! 309: "OP", "EX", "EE", "UR",
! 310: "UE", "ll", NULL
! 311: };
! 312: const char *const *roff_name = __roff_name;
! 313:
1.85 kristaps 314: static struct roffmac *hash[HASHWIDTH];
315:
1.294 ! schwarze 316: static struct roffmac roffs[TOKEN_NONE] = {
1.251 schwarze 317: { "ab", roff_unsupp, NULL, NULL, 0, NULL },
1.103 kristaps 318: { "ad", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 319: { "af", roff_line_ignore, NULL, NULL, 0, NULL },
320: { "aln", roff_unsupp, NULL, NULL, 0, NULL },
321: { "als", roff_unsupp, NULL, NULL, 0, NULL },
1.85 kristaps 322: { "am", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 323: { "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.85 kristaps 324: { "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 325: { "ami1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.193 schwarze 326: { "as", roff_ds, NULL, NULL, 0, NULL },
1.251 schwarze 327: { "as1", roff_ds, NULL, NULL, 0, NULL },
328: { "asciify", roff_unsupp, NULL, NULL, 0, NULL },
329: { "backtrace", roff_line_ignore, NULL, NULL, 0, NULL },
330: { "bd", roff_line_ignore, NULL, NULL, 0, NULL },
331: { "bleedat", roff_line_ignore, NULL, NULL, 0, NULL },
332: { "blm", roff_unsupp, NULL, NULL, 0, NULL },
333: { "box", roff_unsupp, NULL, NULL, 0, NULL },
334: { "boxa", roff_unsupp, NULL, NULL, 0, NULL },
335: { "bp", roff_line_ignore, NULL, NULL, 0, NULL },
336: { "BP", roff_unsupp, NULL, NULL, 0, NULL },
337: { "break", roff_unsupp, NULL, NULL, 0, NULL },
338: { "breakchar", roff_line_ignore, NULL, NULL, 0, NULL },
339: { "brnl", roff_line_ignore, NULL, NULL, 0, NULL },
340: { "brp", roff_brp, NULL, NULL, 0, NULL },
341: { "brpnl", roff_line_ignore, NULL, NULL, 0, NULL },
342: { "c2", roff_unsupp, NULL, NULL, 0, NULL },
1.174 kristaps 343: { "cc", roff_cc, NULL, NULL, 0, NULL },
1.194 schwarze 344: { "ce", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 345: { "cf", roff_insec, NULL, NULL, 0, NULL },
346: { "cflags", roff_line_ignore, NULL, NULL, 0, NULL },
347: { "ch", roff_line_ignore, NULL, NULL, 0, NULL },
348: { "char", roff_unsupp, NULL, NULL, 0, NULL },
349: { "chop", roff_unsupp, NULL, NULL, 0, NULL },
350: { "class", roff_line_ignore, NULL, NULL, 0, NULL },
351: { "close", roff_insec, NULL, NULL, 0, NULL },
352: { "CL", roff_unsupp, NULL, NULL, 0, NULL },
353: { "color", roff_line_ignore, NULL, NULL, 0, NULL },
354: { "composite", roff_unsupp, NULL, NULL, 0, NULL },
355: { "continue", roff_unsupp, NULL, NULL, 0, NULL },
356: { "cp", roff_line_ignore, NULL, NULL, 0, NULL },
357: { "cropat", roff_line_ignore, NULL, NULL, 0, NULL },
358: { "cs", roff_line_ignore, NULL, NULL, 0, NULL },
359: { "cu", roff_line_ignore, NULL, NULL, 0, NULL },
360: { "da", roff_unsupp, NULL, NULL, 0, NULL },
361: { "dch", roff_unsupp, NULL, NULL, 0, NULL },
362: { "Dd", roff_Dd, NULL, NULL, 0, NULL },
1.85 kristaps 363: { "de", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 364: { "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
365: { "defcolor", roff_line_ignore, NULL, NULL, 0, NULL },
1.85 kristaps 366: { "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 367: { "dei1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
368: { "device", roff_unsupp, NULL, NULL, 0, NULL },
369: { "devicem", roff_unsupp, NULL, NULL, 0, NULL },
370: { "di", roff_unsupp, NULL, NULL, 0, NULL },
371: { "do", roff_unsupp, NULL, NULL, 0, NULL },
1.92 schwarze 372: { "ds", roff_ds, NULL, NULL, 0, NULL },
1.251 schwarze 373: { "ds1", roff_ds, NULL, NULL, 0, NULL },
374: { "dwh", roff_unsupp, NULL, NULL, 0, NULL },
375: { "dt", roff_unsupp, NULL, NULL, 0, NULL },
376: { "ec", roff_unsupp, NULL, NULL, 0, NULL },
377: { "ecr", roff_unsupp, NULL, NULL, 0, NULL },
378: { "ecs", roff_unsupp, NULL, NULL, 0, NULL },
1.85 kristaps 379: { "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
1.251 schwarze 380: { "em", roff_unsupp, NULL, NULL, 0, NULL },
381: { "EN", roff_EN, NULL, NULL, 0, NULL },
382: { "eo", roff_unsupp, NULL, NULL, 0, NULL },
383: { "EP", roff_unsupp, NULL, NULL, 0, NULL },
384: { "EQ", roff_EQ, NULL, NULL, 0, NULL },
385: { "errprint", roff_line_ignore, NULL, NULL, 0, NULL },
386: { "ev", roff_unsupp, NULL, NULL, 0, NULL },
387: { "evc", roff_unsupp, NULL, NULL, 0, NULL },
388: { "ex", roff_unsupp, NULL, NULL, 0, NULL },
389: { "fallback", roff_line_ignore, NULL, NULL, 0, NULL },
1.185 schwarze 390: { "fam", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 391: { "fc", roff_unsupp, NULL, NULL, 0, NULL },
392: { "fchar", roff_unsupp, NULL, NULL, 0, NULL },
393: { "fcolor", roff_line_ignore, NULL, NULL, 0, NULL },
394: { "fdeferlig", roff_line_ignore, NULL, NULL, 0, NULL },
395: { "feature", roff_line_ignore, NULL, NULL, 0, NULL },
396: { "fkern", roff_line_ignore, NULL, NULL, 0, NULL },
397: { "fl", roff_line_ignore, NULL, NULL, 0, NULL },
398: { "flig", roff_line_ignore, NULL, NULL, 0, NULL },
399: { "fp", roff_line_ignore, NULL, NULL, 0, NULL },
400: { "fps", roff_line_ignore, NULL, NULL, 0, NULL },
401: { "fschar", roff_unsupp, NULL, NULL, 0, NULL },
402: { "fspacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
403: { "fspecial", roff_line_ignore, NULL, NULL, 0, NULL },
404: { "ftr", roff_line_ignore, NULL, NULL, 0, NULL },
405: { "fzoom", roff_line_ignore, NULL, NULL, 0, NULL },
406: { "gcolor", roff_line_ignore, NULL, NULL, 0, NULL },
407: { "hc", roff_line_ignore, NULL, NULL, 0, NULL },
408: { "hcode", roff_line_ignore, NULL, NULL, 0, NULL },
409: { "hidechar", roff_line_ignore, NULL, NULL, 0, NULL },
410: { "hla", roff_line_ignore, NULL, NULL, 0, NULL },
411: { "hlm", roff_line_ignore, NULL, NULL, 0, NULL },
412: { "hpf", roff_line_ignore, NULL, NULL, 0, NULL },
413: { "hpfa", roff_line_ignore, NULL, NULL, 0, NULL },
414: { "hpfcode", roff_line_ignore, NULL, NULL, 0, NULL },
1.186 schwarze 415: { "hw", roff_line_ignore, NULL, NULL, 0, NULL },
1.103 kristaps 416: { "hy", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 417: { "hylang", roff_line_ignore, NULL, NULL, 0, NULL },
418: { "hylen", roff_line_ignore, NULL, NULL, 0, NULL },
419: { "hym", roff_line_ignore, NULL, NULL, 0, NULL },
420: { "hypp", roff_line_ignore, NULL, NULL, 0, NULL },
421: { "hys", roff_line_ignore, NULL, NULL, 0, NULL },
1.85 kristaps 422: { "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
423: { "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
424: { "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 425: { "index", roff_unsupp, NULL, NULL, 0, NULL },
1.178 schwarze 426: { "it", roff_it, NULL, NULL, 0, NULL },
1.251 schwarze 427: { "itc", roff_unsupp, NULL, NULL, 0, NULL },
428: { "IX", roff_line_ignore, NULL, NULL, 0, NULL },
429: { "kern", roff_line_ignore, NULL, NULL, 0, NULL },
430: { "kernafter", roff_line_ignore, NULL, NULL, 0, NULL },
431: { "kernbefore", roff_line_ignore, NULL, NULL, 0, NULL },
432: { "kernpair", roff_line_ignore, NULL, NULL, 0, NULL },
433: { "lc", roff_unsupp, NULL, NULL, 0, NULL },
434: { "lc_ctype", roff_unsupp, NULL, NULL, 0, NULL },
435: { "lds", roff_unsupp, NULL, NULL, 0, NULL },
436: { "length", roff_unsupp, NULL, NULL, 0, NULL },
437: { "letadj", roff_line_ignore, NULL, NULL, 0, NULL },
438: { "lf", roff_insec, NULL, NULL, 0, NULL },
439: { "lg", roff_line_ignore, NULL, NULL, 0, NULL },
440: { "lhang", roff_line_ignore, NULL, NULL, 0, NULL },
441: { "linetabs", roff_unsupp, NULL, NULL, 0, NULL },
442: { "lnr", roff_unsupp, NULL, NULL, 0, NULL },
443: { "lnrf", roff_unsupp, NULL, NULL, 0, NULL },
444: { "lpfx", roff_unsupp, NULL, NULL, 0, NULL },
445: { "ls", roff_line_ignore, NULL, NULL, 0, NULL },
446: { "lsm", roff_unsupp, NULL, NULL, 0, NULL },
447: { "lt", roff_line_ignore, NULL, NULL, 0, NULL },
448: { "mc", roff_line_ignore, NULL, NULL, 0, NULL },
449: { "mediasize", roff_line_ignore, NULL, NULL, 0, NULL },
450: { "minss", roff_line_ignore, NULL, NULL, 0, NULL },
451: { "mk", roff_line_ignore, NULL, NULL, 0, NULL },
452: { "mso", roff_insec, NULL, NULL, 0, NULL },
1.256 schwarze 453: { "na", roff_line_ignore, NULL, NULL, 0, NULL },
1.103 kristaps 454: { "ne", roff_line_ignore, NULL, NULL, 0, NULL },
455: { "nh", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 456: { "nhychar", roff_line_ignore, NULL, NULL, 0, NULL },
457: { "nm", roff_unsupp, NULL, NULL, 0, NULL },
458: { "nn", roff_unsupp, NULL, NULL, 0, NULL },
459: { "nop", roff_unsupp, NULL, NULL, 0, NULL },
1.104 kristaps 460: { "nr", roff_nr, NULL, NULL, 0, NULL },
1.251 schwarze 461: { "nrf", roff_unsupp, NULL, NULL, 0, NULL },
462: { "nroff", roff_line_ignore, NULL, NULL, 0, NULL },
1.124 schwarze 463: { "ns", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 464: { "nx", roff_insec, NULL, NULL, 0, NULL },
465: { "open", roff_insec, NULL, NULL, 0, NULL },
466: { "opena", roff_insec, NULL, NULL, 0, NULL },
467: { "os", roff_line_ignore, NULL, NULL, 0, NULL },
468: { "output", roff_unsupp, NULL, NULL, 0, NULL },
469: { "padj", roff_line_ignore, NULL, NULL, 0, NULL },
470: { "papersize", roff_line_ignore, NULL, NULL, 0, NULL },
471: { "pc", roff_line_ignore, NULL, NULL, 0, NULL },
472: { "pev", roff_line_ignore, NULL, NULL, 0, NULL },
473: { "pi", roff_insec, NULL, NULL, 0, NULL },
474: { "PI", roff_unsupp, NULL, NULL, 0, NULL },
1.229 schwarze 475: { "pl", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 476: { "pm", roff_line_ignore, NULL, NULL, 0, NULL },
477: { "pn", roff_line_ignore, NULL, NULL, 0, NULL },
478: { "pnr", roff_line_ignore, NULL, NULL, 0, NULL },
479: { "po", roff_line_ignore, NULL, NULL, 0, NULL },
1.124 schwarze 480: { "ps", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 481: { "psbb", roff_unsupp, NULL, NULL, 0, NULL },
1.255 schwarze 482: { "pshape", roff_unsupp, NULL, NULL, 0, NULL },
1.251 schwarze 483: { "pso", roff_insec, NULL, NULL, 0, NULL },
484: { "ptr", roff_line_ignore, NULL, NULL, 0, NULL },
485: { "pvs", roff_line_ignore, NULL, NULL, 0, NULL },
486: { "rchar", roff_unsupp, NULL, NULL, 0, NULL },
487: { "rd", roff_line_ignore, NULL, NULL, 0, NULL },
488: { "recursionlimit", roff_line_ignore, NULL, NULL, 0, NULL },
489: { "return", roff_unsupp, NULL, NULL, 0, NULL },
490: { "rfschar", roff_unsupp, NULL, NULL, 0, NULL },
491: { "rhang", roff_line_ignore, NULL, NULL, 0, NULL },
492: { "rj", roff_line_ignore, NULL, NULL, 0, NULL },
1.122 schwarze 493: { "rm", roff_rm, NULL, NULL, 0, NULL },
1.251 schwarze 494: { "rn", roff_unsupp, NULL, NULL, 0, NULL },
495: { "rnn", roff_unsupp, NULL, NULL, 0, NULL },
1.203 schwarze 496: { "rr", roff_rr, NULL, NULL, 0, NULL },
1.251 schwarze 497: { "rs", roff_line_ignore, NULL, NULL, 0, NULL },
498: { "rt", roff_line_ignore, NULL, NULL, 0, NULL },
499: { "schar", roff_unsupp, NULL, NULL, 0, NULL },
500: { "sentchar", roff_line_ignore, NULL, NULL, 0, NULL },
501: { "shc", roff_line_ignore, NULL, NULL, 0, NULL },
502: { "shift", roff_unsupp, NULL, NULL, 0, NULL },
503: { "sizes", roff_line_ignore, NULL, NULL, 0, NULL },
1.105 kristaps 504: { "so", roff_so, NULL, NULL, 0, NULL },
1.251 schwarze 505: { "spacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
506: { "special", roff_line_ignore, NULL, NULL, 0, NULL },
507: { "spreadwarn", roff_line_ignore, NULL, NULL, 0, NULL },
508: { "ss", roff_line_ignore, NULL, NULL, 0, NULL },
509: { "sty", roff_line_ignore, NULL, NULL, 0, NULL },
510: { "substring", roff_unsupp, NULL, NULL, 0, NULL },
511: { "sv", roff_line_ignore, NULL, NULL, 0, NULL },
512: { "sy", roff_insec, NULL, NULL, 0, NULL },
513: { "T&", roff_T_, NULL, NULL, 0, NULL },
1.255 schwarze 514: { "ta", roff_unsupp, NULL, NULL, 0, NULL },
1.251 schwarze 515: { "tc", roff_unsupp, NULL, NULL, 0, NULL },
516: { "TE", roff_TE, NULL, NULL, 0, NULL },
517: { "TH", roff_TH, NULL, NULL, 0, NULL },
1.255 schwarze 518: { "ti", roff_unsupp, NULL, NULL, 0, NULL },
1.251 schwarze 519: { "tkf", roff_line_ignore, NULL, NULL, 0, NULL },
520: { "tl", roff_unsupp, NULL, NULL, 0, NULL },
521: { "tm", roff_line_ignore, NULL, NULL, 0, NULL },
522: { "tm1", roff_line_ignore, NULL, NULL, 0, NULL },
523: { "tmc", roff_line_ignore, NULL, NULL, 0, NULL },
1.164 kristaps 524: { "tr", roff_tr, NULL, NULL, 0, NULL },
1.251 schwarze 525: { "track", roff_line_ignore, NULL, NULL, 0, NULL },
526: { "transchar", roff_line_ignore, NULL, NULL, 0, NULL },
527: { "trf", roff_insec, NULL, NULL, 0, NULL },
528: { "trimat", roff_line_ignore, NULL, NULL, 0, NULL },
529: { "trin", roff_unsupp, NULL, NULL, 0, NULL },
530: { "trnt", roff_unsupp, NULL, NULL, 0, NULL },
531: { "troff", roff_line_ignore, NULL, NULL, 0, NULL },
1.109 kristaps 532: { "TS", roff_TS, NULL, NULL, 0, NULL },
1.251 schwarze 533: { "uf", roff_line_ignore, NULL, NULL, 0, NULL },
534: { "ul", roff_line_ignore, NULL, NULL, 0, NULL },
535: { "unformat", roff_unsupp, NULL, NULL, 0, NULL },
536: { "unwatch", roff_line_ignore, NULL, NULL, 0, NULL },
537: { "unwatchn", roff_line_ignore, NULL, NULL, 0, NULL },
538: { "vpt", roff_line_ignore, NULL, NULL, 0, NULL },
539: { "vs", roff_line_ignore, NULL, NULL, 0, NULL },
540: { "warn", roff_line_ignore, NULL, NULL, 0, NULL },
541: { "warnscale", roff_line_ignore, NULL, NULL, 0, NULL },
542: { "watch", roff_line_ignore, NULL, NULL, 0, NULL },
543: { "watchlength", roff_line_ignore, NULL, NULL, 0, NULL },
544: { "watchn", roff_line_ignore, NULL, NULL, 0, NULL },
545: { "wh", roff_unsupp, NULL, NULL, 0, NULL },
546: { "while", roff_unsupp, NULL, NULL, 0, NULL },
547: { "write", roff_insec, NULL, NULL, 0, NULL },
548: { "writec", roff_insec, NULL, NULL, 0, NULL },
549: { "writem", roff_insec, NULL, NULL, 0, NULL },
550: { "xflag", roff_line_ignore, NULL, NULL, 0, NULL },
1.85 kristaps 551: { ".", roff_cblock, NULL, NULL, 0, NULL },
1.106 kristaps 552: { NULL, roff_userdef, NULL, NULL, 0, NULL },
1.67 kristaps 553: };
554:
1.200 schwarze 555: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.175 schwarze 556: const char *const __mdoc_reserved[] = {
557: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
558: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
559: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
560: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.200 schwarze 561: "Dt", "Dv", "Dx", "D1",
562: "Ec", "Ed", "Ef", "Ek", "El", "Em",
563: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.175 schwarze 564: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.200 schwarze 565: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
566: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.175 schwarze 567: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.200 schwarze 568: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
569: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
570: "Sc", "Sh", "Sm", "So", "Sq",
1.175 schwarze 571: "Ss", "St", "Sx", "Sy",
572: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.200 schwarze 573: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.175 schwarze 574: "%P", "%Q", "%R", "%T", "%U", "%V",
575: NULL
576: };
577:
1.200 schwarze 578: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.175 schwarze 579: const char *const __man_reserved[] = {
1.200 schwarze 580: "AT", "B", "BI", "BR", "DT",
581: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
582: "LP", "OP", "P", "PD", "PP",
583: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
584: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.175 schwarze 585: NULL
586: };
587:
1.141 kristaps 588: /* Array of injected predefined strings. */
589: #define PREDEFS_MAX 38
590: static const struct predef predefs[PREDEFS_MAX] = {
591: #include "predefs.in"
592: };
593:
1.155 kristaps 594: /* See roffhash_find() */
1.85 kristaps 595: #define ROFF_HASH(p) (p[0] - ASCII_LO)
596:
1.178 schwarze 597: static int roffit_lines; /* number of lines to delay */
598: static char *roffit_macro; /* nil-terminated macro line */
599:
1.207 schwarze 600:
1.266 schwarze 601: /* --- request table ------------------------------------------------------ */
602:
1.85 kristaps 603: static void
1.155 kristaps 604: roffhash_init(void)
1.85 kristaps 605: {
606: struct roffmac *n;
607: int buc, i;
608:
1.106 kristaps 609: for (i = 0; i < (int)ROFF_USERDEF; i++) {
1.85 kristaps 610: assert(roffs[i].name[0] >= ASCII_LO);
611: assert(roffs[i].name[0] <= ASCII_HI);
612:
613: buc = ROFF_HASH(roffs[i].name);
614:
615: if (NULL != (n = hash[buc])) {
616: for ( ; n->next; n = n->next)
617: /* Do nothing. */ ;
618: n->next = &roffs[i];
619: } else
620: hash[buc] = &roffs[i];
621: }
622: }
623:
1.67 kristaps 624: /*
1.294 ! schwarze 625: * Look up a roff token by its name. Returns TOKEN_NONE if no macro by
1.67 kristaps 626: * the nil-terminated string name could be found.
627: */
1.294 ! schwarze 628: static enum roff_tok
1.155 kristaps 629: roffhash_find(const char *p, size_t s)
1.67 kristaps 630: {
1.85 kristaps 631: int buc;
632: struct roffmac *n;
1.67 kristaps 633:
1.85 kristaps 634: /*
635: * libroff has an extremely simple hashtable, for the time
636: * being, which simply keys on the first character, which must
637: * be printable, then walks a chain. It works well enough until
638: * optimised.
639: */
640:
641: if (p[0] < ASCII_LO || p[0] > ASCII_HI)
1.294 ! schwarze 642: return TOKEN_NONE;
1.85 kristaps 643:
644: buc = ROFF_HASH(p);
645:
646: if (NULL == (n = hash[buc]))
1.294 ! schwarze 647: return TOKEN_NONE;
1.85 kristaps 648: for ( ; n; n = n->next)
1.106 kristaps 649: if (0 == strncmp(n->name, p, s) && '\0' == n->name[(int)s])
1.294 ! schwarze 650: return (enum roff_tok)(n - roffs);
1.67 kristaps 651:
1.294 ! schwarze 652: return TOKEN_NONE;
1.67 kristaps 653: }
654:
1.266 schwarze 655: /* --- stack of request blocks -------------------------------------------- */
656:
1.67 kristaps 657: /*
658: * Pop the current node off of the stack of roff instructions currently
659: * pending.
660: */
661: static void
662: roffnode_pop(struct roff *r)
663: {
664: struct roffnode *p;
665:
1.75 kristaps 666: assert(r->last);
1.207 schwarze 667: p = r->last;
1.82 kristaps 668:
1.75 kristaps 669: r->last = r->last->parent;
1.106 kristaps 670: free(p->name);
671: free(p->end);
1.67 kristaps 672: free(p);
673: }
674:
675: /*
676: * Push a roff node onto the instruction stack. This must later be
677: * removed with roffnode_pop().
678: */
1.98 schwarze 679: static void
1.294 ! schwarze 680: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 681: int line, int col)
1.67 kristaps 682: {
683: struct roffnode *p;
684:
1.98 schwarze 685: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 686: p->tok = tok;
1.106 kristaps 687: if (name)
688: p->name = mandoc_strdup(name);
1.67 kristaps 689: p->parent = r->last;
690: p->line = line;
691: p->col = col;
1.198 schwarze 692: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 693:
694: r->last = p;
695: }
696:
1.266 schwarze 697: /* --- roff parser state data management ---------------------------------- */
698:
1.67 kristaps 699: static void
700: roff_free1(struct roff *r)
701: {
1.176 schwarze 702: struct tbl_node *tbl;
1.125 kristaps 703: struct eqn_node *e;
1.167 kristaps 704: int i;
1.67 kristaps 705:
1.176 schwarze 706: while (NULL != (tbl = r->first_tbl)) {
707: r->first_tbl = tbl->next;
708: tbl_free(tbl);
1.109 kristaps 709: }
1.113 kristaps 710: r->first_tbl = r->last_tbl = r->tbl = NULL;
711:
1.125 kristaps 712: while (NULL != (e = r->first_eqn)) {
713: r->first_eqn = e->next;
714: eqn_free(e);
715: }
716: r->first_eqn = r->last_eqn = r->eqn = NULL;
717:
1.67 kristaps 718: while (r->last)
719: roffnode_pop(r);
1.109 kristaps 720:
1.223 schwarze 721: free (r->rstack);
722: r->rstack = NULL;
723: r->rstacksz = 0;
724: r->rstackpos = -1;
725:
726: roff_freereg(r->regtab);
727: r->regtab = NULL;
728:
1.167 kristaps 729: roff_freestr(r->strtab);
730: roff_freestr(r->xmbtab);
731: r->strtab = r->xmbtab = NULL;
732:
733: if (r->xtab)
734: for (i = 0; i < 128; i++)
735: free(r->xtab[i].p);
736: free(r->xtab);
737: r->xtab = NULL;
1.67 kristaps 738: }
739:
740: void
741: roff_reset(struct roff *r)
742: {
743:
744: roff_free1(r);
1.227 schwarze 745: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.174 kristaps 746: r->control = 0;
1.67 kristaps 747: }
748:
749: void
750: roff_free(struct roff *r)
751: {
752:
753: roff_free1(r);
754: free(r);
755: }
756:
757: struct roff *
1.279 schwarze 758: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 759: {
760: struct roff *r;
761:
1.98 schwarze 762: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 763: r->parse = parse;
1.199 schwarze 764: r->options = options;
1.227 schwarze 765: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 766: r->rstackpos = -1;
1.207 schwarze 767:
1.155 kristaps 768: roffhash_init();
1.141 kristaps 769:
1.277 schwarze 770: return r;
1.265 schwarze 771: }
772:
1.266 schwarze 773: /* --- syntax tree state data management ---------------------------------- */
774:
1.265 schwarze 775: static void
776: roff_man_free1(struct roff_man *man)
777: {
778:
1.266 schwarze 779: if (man->first != NULL)
780: roff_node_delete(man, man->first);
1.265 schwarze 781: free(man->meta.msec);
782: free(man->meta.vol);
783: free(man->meta.os);
784: free(man->meta.arch);
785: free(man->meta.title);
786: free(man->meta.name);
787: free(man->meta.date);
788: }
789:
790: static void
791: roff_man_alloc1(struct roff_man *man)
792: {
793:
794: memset(&man->meta, 0, sizeof(man->meta));
795: man->first = mandoc_calloc(1, sizeof(*man->first));
796: man->first->type = ROFFT_ROOT;
797: man->last = man->first;
798: man->last_es = NULL;
799: man->flags = 0;
800: man->macroset = MACROSET_NONE;
801: man->lastsec = man->lastnamed = SEC_NONE;
802: man->next = ROFF_NEXT_CHILD;
803: }
804:
805: void
806: roff_man_reset(struct roff_man *man)
807: {
808:
809: roff_man_free1(man);
810: roff_man_alloc1(man);
811: }
812:
813: void
814: roff_man_free(struct roff_man *man)
815: {
816:
817: roff_man_free1(man);
818: free(man);
819: }
820:
821: struct roff_man *
822: roff_man_alloc(struct roff *roff, struct mparse *parse,
823: const char *defos, int quick)
824: {
825: struct roff_man *man;
826:
827: man = mandoc_calloc(1, sizeof(*man));
828: man->parse = parse;
829: man->roff = roff;
830: man->defos = defos;
831: man->quick = quick;
832: roff_man_alloc1(man);
1.277 schwarze 833: return man;
1.67 kristaps 834: }
835:
1.266 schwarze 836: /* --- syntax tree handling ----------------------------------------------- */
837:
838: struct roff_node *
839: roff_node_alloc(struct roff_man *man, int line, int pos,
840: enum roff_type type, int tok)
841: {
842: struct roff_node *n;
843:
844: n = mandoc_calloc(1, sizeof(*n));
845: n->line = line;
846: n->pos = pos;
847: n->tok = tok;
848: n->type = type;
849: n->sec = man->lastsec;
850:
851: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 852: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 853: else
1.285 schwarze 854: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 855: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 856: n->flags |= NODE_LINE;
1.266 schwarze 857: man->flags &= ~MDOC_NEWLINE;
858:
1.277 schwarze 859: return n;
1.266 schwarze 860: }
861:
862: void
863: roff_node_append(struct roff_man *man, struct roff_node *n)
864: {
865:
866: switch (man->next) {
867: case ROFF_NEXT_SIBLING:
1.281 schwarze 868: if (man->last->next != NULL) {
869: n->next = man->last->next;
870: man->last->next->prev = n;
871: } else
872: man->last->parent->last = n;
1.266 schwarze 873: man->last->next = n;
874: n->prev = man->last;
875: n->parent = man->last->parent;
876: break;
877: case ROFF_NEXT_CHILD:
1.287 schwarze 878: if (man->last->child != NULL) {
879: n->next = man->last->child;
880: man->last->child->prev = n;
881: } else
882: man->last->last = n;
1.266 schwarze 883: man->last->child = n;
884: n->parent = man->last;
885: break;
886: default:
887: abort();
888: }
1.282 schwarze 889: man->last = n;
1.266 schwarze 890:
891: switch (n->type) {
892: case ROFFT_HEAD:
893: n->parent->head = n;
894: break;
895: case ROFFT_BODY:
1.282 schwarze 896: if (n->end != ENDBODY_NOT)
897: return;
1.266 schwarze 898: n->parent->body = n;
899: break;
900: case ROFFT_TAIL:
901: n->parent->tail = n;
902: break;
903: default:
1.282 schwarze 904: return;
1.266 schwarze 905: }
1.282 schwarze 906:
907: /*
908: * Copy over the normalised-data pointer of our parent. Not
909: * everybody has one, but copying a null pointer is fine.
910: */
911:
912: n->norm = n->parent->norm;
913: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 914: }
915:
1.267 schwarze 916: void
917: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
918: {
919: struct roff_node *n;
920:
921: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
922: n->string = roff_strdup(man->roff, word);
923: roff_node_append(man, n);
1.286 schwarze 924: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 925: man->next = ROFF_NEXT_SIBLING;
926: }
927:
928: void
929: roff_word_append(struct roff_man *man, const char *word)
930: {
931: struct roff_node *n;
932: char *addstr, *newstr;
933:
934: n = man->last;
935: addstr = roff_strdup(man->roff, word);
936: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
937: free(addstr);
938: free(n->string);
939: n->string = newstr;
940: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 941: }
942:
943: void
944: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
945: {
946: struct roff_node *n;
947:
948: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
949: roff_node_append(man, n);
950: man->next = ROFF_NEXT_CHILD;
951: }
952:
953: struct roff_node *
954: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
955: {
956: struct roff_node *n;
957:
958: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
959: roff_node_append(man, n);
960: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 961: return n;
1.267 schwarze 962: }
963:
1.266 schwarze 964: struct roff_node *
965: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
966: {
967: struct roff_node *n;
968:
969: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
970: roff_node_append(man, n);
971: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 972: return n;
1.266 schwarze 973: }
974:
975: struct roff_node *
976: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
977: {
978: struct roff_node *n;
979:
980: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
981: roff_node_append(man, n);
982: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 983: return n;
1.267 schwarze 984: }
985:
986: void
987: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
988: {
989: struct roff_node *n;
990:
991: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
992: n->eqn = eqn;
993: if (eqn->ln > man->last->line)
1.285 schwarze 994: n->flags |= NODE_LINE;
1.267 schwarze 995: roff_node_append(man, n);
996: man->next = ROFF_NEXT_SIBLING;
997: }
998:
999: void
1000: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1001: {
1002: struct roff_node *n;
1003:
1004: if (man->macroset == MACROSET_MAN)
1005: man_breakscope(man, TOKEN_NONE);
1006: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1007: n->span = tbl;
1008: roff_node_append(man, n);
1.286 schwarze 1009: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 1010: man->next = ROFF_NEXT_SIBLING;
1.266 schwarze 1011: }
1012:
1013: void
1014: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1015: {
1016:
1017: /* Adjust siblings. */
1018:
1019: if (n->prev)
1020: n->prev->next = n->next;
1021: if (n->next)
1022: n->next->prev = n->prev;
1023:
1024: /* Adjust parent. */
1025:
1026: if (n->parent != NULL) {
1027: if (n->parent->child == n)
1028: n->parent->child = n->next;
1029: if (n->parent->last == n)
1030: n->parent->last = n->prev;
1031: }
1032:
1033: /* Adjust parse point. */
1034:
1035: if (man == NULL)
1036: return;
1037: if (man->last == n) {
1038: if (n->prev == NULL) {
1039: man->last = n->parent;
1040: man->next = ROFF_NEXT_CHILD;
1041: } else {
1042: man->last = n->prev;
1043: man->next = ROFF_NEXT_SIBLING;
1044: }
1045: }
1046: if (man->first == n)
1047: man->first = NULL;
1048: }
1049:
1050: void
1051: roff_node_free(struct roff_node *n)
1052: {
1053:
1054: if (n->args != NULL)
1055: mdoc_argv_free(n->args);
1056: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1057: free(n->norm);
1058: free(n->string);
1059: free(n);
1060: }
1061:
1062: void
1063: roff_node_delete(struct roff_man *man, struct roff_node *n)
1064: {
1065:
1066: while (n->child != NULL)
1067: roff_node_delete(man, n->child);
1068: roff_node_unlink(man, n);
1069: roff_node_free(n);
1.269 schwarze 1070: }
1071:
1072: void
1073: deroff(char **dest, const struct roff_node *n)
1074: {
1075: char *cp;
1076: size_t sz;
1077:
1078: if (n->type != ROFFT_TEXT) {
1079: for (n = n->child; n != NULL; n = n->next)
1080: deroff(dest, n);
1081: return;
1082: }
1083:
1.288 schwarze 1084: /* Skip leading whitespace. */
1.269 schwarze 1085:
1.288 schwarze 1086: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1087: if (cp[0] == '\\' && cp[1] != '\0' &&
1088: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1089: cp++;
1.288 schwarze 1090: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1091: break;
1092: }
1093:
1.289 schwarze 1094: /* Skip trailing backslash. */
1095:
1096: sz = strlen(cp);
1.290 schwarze 1097: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1098: sz--;
1099:
1.269 schwarze 1100: /* Skip trailing whitespace. */
1101:
1.289 schwarze 1102: for (; sz; sz--)
1.269 schwarze 1103: if ( ! isspace((unsigned char)cp[sz-1]))
1104: break;
1105:
1106: /* Skip empty strings. */
1107:
1108: if (sz == 0)
1109: return;
1110:
1111: if (*dest == NULL) {
1112: *dest = mandoc_strndup(cp, sz);
1113: return;
1114: }
1115:
1116: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1117: free(*dest);
1118: *dest = cp;
1.266 schwarze 1119: }
1120:
1121: /* --- main functions of the roff parser ---------------------------------- */
1122:
1.94 kristaps 1123: /*
1.206 schwarze 1124: * In the current line, expand escape sequences that tend to get
1125: * used in numerical expressions and conditional requests.
1126: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1127: */
1.172 schwarze 1128: static enum rofferr
1.238 schwarze 1129: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1130: {
1.208 schwarze 1131: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1132: const char *start; /* start of the string to process */
1.209 schwarze 1133: char *stesc; /* start of an escape sequence ('\\') */
1.108 schwarze 1134: const char *stnam; /* start of the name, after "[(*" */
1135: const char *cp; /* end of the name, e.g. before ']' */
1136: const char *res; /* the string to be substituted */
1.238 schwarze 1137: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1138: size_t maxl; /* expected length of the escape name */
1139: size_t naml; /* actual length of the escape name */
1.237 schwarze 1140: enum mandoc_esc esc; /* type of the escape sequence */
1141: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1142: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1143: int npos; /* position in numeric expression */
1.218 schwarze 1144: int arg_complete; /* argument not interrupted by eol */
1.206 schwarze 1145: char term; /* character terminating the escape */
1.94 kristaps 1146:
1.170 schwarze 1147: expand_count = 0;
1.238 schwarze 1148: start = buf->buf + pos;
1.205 schwarze 1149: stesc = strchr(start, '\0') - 1;
1150: while (stesc-- > start) {
1.170 schwarze 1151:
1.205 schwarze 1152: /* Search backwards for the next backslash. */
1153:
1.238 schwarze 1154: if (*stesc != '\\')
1.205 schwarze 1155: continue;
1156:
1157: /* If it is escaped, skip it. */
1158:
1159: for (cp = stesc - 1; cp >= start; cp--)
1.238 schwarze 1160: if (*cp != '\\')
1.205 schwarze 1161: break;
1162:
1.238 schwarze 1163: if ((stesc - cp) % 2 == 0) {
1.209 schwarze 1164: stesc = (char *)cp;
1.205 schwarze 1165: continue;
1166: }
1.108 schwarze 1167:
1.206 schwarze 1168: /* Decide whether to expand or to check only. */
1.108 schwarze 1169:
1.206 schwarze 1170: term = '\0';
1.205 schwarze 1171: cp = stesc + 1;
1.181 schwarze 1172: switch (*cp) {
1.207 schwarze 1173: case '*':
1.181 schwarze 1174: res = NULL;
1175: break;
1.207 schwarze 1176: case 'B':
1177: case 'w':
1.206 schwarze 1178: term = cp[1];
1179: /* FALLTHROUGH */
1.207 schwarze 1180: case 'n':
1.181 schwarze 1181: res = ubuf;
1182: break;
1183: default:
1.237 schwarze 1184: esc = mandoc_escape(&cp, &stnam, &inaml);
1185: if (esc == ESCAPE_ERROR ||
1186: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1187: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1188: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1189: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1190: "%.*s", (int)(cp - stesc), stesc);
1.205 schwarze 1191: continue;
1.152 kristaps 1192: }
1193:
1.205 schwarze 1194: if (EXPAND_LIMIT < ++expand_count) {
1195: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1196: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1197: return ROFF_IGN;
1.205 schwarze 1198: }
1.108 schwarze 1199:
1200: /*
1201: * The third character decides the length
1.181 schwarze 1202: * of the name of the string or register.
1.108 schwarze 1203: * Save a pointer to the name.
1204: */
1205:
1.238 schwarze 1206: if (term == '\0') {
1.206 schwarze 1207: switch (*++cp) {
1.207 schwarze 1208: case '\0':
1.206 schwarze 1209: maxl = 0;
1210: break;
1.207 schwarze 1211: case '(':
1.206 schwarze 1212: cp++;
1213: maxl = 2;
1214: break;
1.207 schwarze 1215: case '[':
1.206 schwarze 1216: cp++;
1217: term = ']';
1218: maxl = 0;
1219: break;
1220: default:
1221: maxl = 1;
1222: break;
1223: }
1224: } else {
1225: cp += 2;
1.94 kristaps 1226: maxl = 0;
1227: }
1.108 schwarze 1228: stnam = cp;
1.94 kristaps 1229:
1.108 schwarze 1230: /* Advance to the end of the name. */
1.94 kristaps 1231:
1.253 schwarze 1232: naml = 0;
1.218 schwarze 1233: arg_complete = 1;
1.253 schwarze 1234: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1235: if (*cp == '\0') {
1.219 schwarze 1236: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1237: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1238: arg_complete = 0;
1.206 schwarze 1239: break;
1.153 kristaps 1240: }
1.238 schwarze 1241: if (maxl == 0 && *cp == term) {
1.206 schwarze 1242: cp++;
1.253 schwarze 1243: break;
1244: }
1245: if (*cp++ != '\\' || stesc[1] != 'w') {
1246: naml++;
1247: continue;
1248: }
1249: switch (mandoc_escape(&cp, NULL, NULL)) {
1250: case ESCAPE_SPECIAL:
1251: case ESCAPE_UNICODE:
1252: case ESCAPE_NUMBERED:
1253: case ESCAPE_OVERSTRIKE:
1254: naml++;
1255: break;
1256: default:
1.94 kristaps 1257: break;
1.206 schwarze 1258: }
1.94 kristaps 1259: }
1260:
1.108 schwarze 1261: /*
1262: * Retrieve the replacement string; if it is
1263: * undefined, resume searching for escapes.
1264: */
1265:
1.206 schwarze 1266: switch (stesc[1]) {
1.207 schwarze 1267: case '*':
1.218 schwarze 1268: if (arg_complete)
1269: res = roff_getstrn(r, stnam, naml);
1.206 schwarze 1270: break;
1.207 schwarze 1271: case 'B':
1.206 schwarze 1272: npos = 0;
1.218 schwarze 1273: ubuf[0] = arg_complete &&
1.261 schwarze 1274: roff_evalnum(r, ln, stnam, &npos,
1275: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1276: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1277: ubuf[1] = '\0';
1278: break;
1.207 schwarze 1279: case 'n':
1.218 schwarze 1280: if (arg_complete)
1281: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1282: roff_getregn(r, stnam, naml));
1283: else
1284: ubuf[0] = '\0';
1.206 schwarze 1285: break;
1.207 schwarze 1286: case 'w':
1.218 schwarze 1287: /* use even incomplete args */
1.208 schwarze 1288: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1289: 24 * (int)naml);
1290: break;
1291: }
1.94 kristaps 1292:
1.238 schwarze 1293: if (res == NULL) {
1.219 schwarze 1294: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1295: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1296: "%.*s", (int)naml, stnam);
1.142 kristaps 1297: res = "";
1.246 schwarze 1298: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1299: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1300: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1301: return ROFF_IGN;
1.94 kristaps 1302: }
1303:
1.108 schwarze 1304: /* Replace the escape sequence by the string. */
1305:
1.209 schwarze 1306: *stesc = '\0';
1.238 schwarze 1307: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1308: buf->buf, res, cp) + 1;
1.94 kristaps 1309:
1.205 schwarze 1310: /* Prepare for the next replacement. */
1.94 kristaps 1311:
1.205 schwarze 1312: start = nbuf + pos;
1.238 schwarze 1313: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1314: free(buf->buf);
1315: buf->buf = nbuf;
1.154 kristaps 1316: }
1.277 schwarze 1317: return ROFF_CONT;
1.154 kristaps 1318: }
1319:
1320: /*
1.275 schwarze 1321: * Process text streams.
1.154 kristaps 1322: */
1323: static enum rofferr
1.238 schwarze 1324: roff_parsetext(struct buf *buf, int pos, int *offs)
1.154 kristaps 1325: {
1326: size_t sz;
1327: const char *start;
1.178 schwarze 1328: char *p;
1329: int isz;
1.154 kristaps 1330: enum mandoc_esc esc;
1331:
1.275 schwarze 1332: /* Spring the input line trap. */
1333:
1334: if (roffit_lines == 1) {
1335: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1336: free(buf->buf);
1337: buf->buf = p;
1338: buf->sz = isz + 1;
1339: *offs = 0;
1340: free(roffit_macro);
1341: roffit_lines = 0;
1.277 schwarze 1342: return ROFF_REPARSE;
1.275 schwarze 1343: } else if (roffit_lines > 1)
1344: --roffit_lines;
1345:
1346: /* Convert all breakable hyphens into ASCII_HYPH. */
1347:
1.238 schwarze 1348: start = p = buf->buf + pos;
1.154 kristaps 1349:
1.238 schwarze 1350: while (*p != '\0') {
1.154 kristaps 1351: sz = strcspn(p, "-\\");
1352: p += sz;
1353:
1.238 schwarze 1354: if (*p == '\0')
1.159 kristaps 1355: break;
1356:
1.238 schwarze 1357: if (*p == '\\') {
1.154 kristaps 1358: /* Skip over escapes. */
1359: p++;
1.189 schwarze 1360: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1361: if (esc == ESCAPE_ERROR)
1.154 kristaps 1362: break;
1.264 schwarze 1363: while (*p == '-')
1364: p++;
1.155 kristaps 1365: continue;
1.159 kristaps 1366: } else if (p == start) {
1.158 kristaps 1367: p++;
1.155 kristaps 1368: continue;
1.158 kristaps 1369: }
1.155 kristaps 1370:
1.171 schwarze 1371: if (isalpha((unsigned char)p[-1]) &&
1372: isalpha((unsigned char)p[1]))
1.155 kristaps 1373: *p = ASCII_HYPH;
1374: p++;
1.94 kristaps 1375: }
1.277 schwarze 1376: return ROFF_CONT;
1.94 kristaps 1377: }
1378:
1.67 kristaps 1379: enum rofferr
1.238 schwarze 1380: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1381: {
1.294 ! schwarze 1382: enum roff_tok t;
1.109 kristaps 1383: enum rofferr e;
1.238 schwarze 1384: int pos; /* parse point */
1.243 schwarze 1385: int spos; /* saved parse point for messages */
1.238 schwarze 1386: int ppos; /* original offset in buf->buf */
1387: int ctl; /* macro line (boolean) */
1388:
1389: ppos = pos = *offs;
1.79 kristaps 1390:
1.230 schwarze 1391: /* Handle in-line equation delimiters. */
1392:
1.236 schwarze 1393: if (r->tbl == NULL &&
1394: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1395: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1396: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1397: if (e == ROFF_REPARSE)
1.277 schwarze 1398: return e;
1.230 schwarze 1399: assert(e == ROFF_CONT);
1400: }
1401:
1402: /* Expand some escape sequences. */
1.94 kristaps 1403:
1.238 schwarze 1404: e = roff_res(r, buf, ln, pos);
1405: if (e == ROFF_IGN)
1.277 schwarze 1406: return e;
1.238 schwarze 1407: assert(e == ROFF_CONT);
1.94 kristaps 1408:
1.238 schwarze 1409: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1410:
1.94 kristaps 1411: /*
1.79 kristaps 1412: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1413: * text through the macro's filter.
1414: * Equations process all content themselves.
1415: * Tables process almost all content themselves, but we want
1416: * to warn about macros before passing it there.
1.79 kristaps 1417: */
1.74 kristaps 1418:
1.252 schwarze 1419: if (r->last != NULL && ! ctl) {
1.78 kristaps 1420: t = r->last->tok;
1.238 schwarze 1421: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 ! schwarze 1422: if (e == ROFF_IGN)
1.277 schwarze 1423: return e;
1.294 ! schwarze 1424: assert(e == ROFF_CONT);
1.182 schwarze 1425: }
1.252 schwarze 1426: if (r->eqn != NULL)
1.277 schwarze 1427: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.252 schwarze 1428: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.277 schwarze 1429: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.252 schwarze 1430: if ( ! ctl)
1.277 schwarze 1431: return roff_parsetext(buf, pos, offs);
1.228 schwarze 1432:
1433: /* Skip empty request lines. */
1434:
1.238 schwarze 1435: if (buf->buf[pos] == '"') {
1.228 schwarze 1436: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1437: ln, pos, NULL);
1.277 schwarze 1438: return ROFF_IGN;
1.238 schwarze 1439: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1440: return ROFF_IGN;
1.67 kristaps 1441:
1.79 kristaps 1442: /*
1443: * If a scope is open, go to the child handler for that macro,
1444: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1445: * Don't do so if an equation is open.
1.79 kristaps 1446: */
1.78 kristaps 1447:
1.79 kristaps 1448: if (r->last) {
1449: t = r->last->tok;
1.277 schwarze 1450: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1451: }
1.78 kristaps 1452:
1.243 schwarze 1453: /* No scope is open. This is a new request or macro. */
1454:
1455: spos = pos;
1456: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1457:
1458: /* Tables ignore most macros. */
1459:
1.294 ! schwarze 1460: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS)) {
1.243 schwarze 1461: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1462: ln, pos, buf->buf + spos);
1.257 schwarze 1463: if (t == ROFF_TS)
1.277 schwarze 1464: return ROFF_IGN;
1.257 schwarze 1465: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1466: pos++;
1.291 schwarze 1467: while (buf->buf[pos] == ' ')
1.257 schwarze 1468: pos++;
1.277 schwarze 1469: return tbl_read(r->tbl, ln, buf->buf, pos);
1.243 schwarze 1470: }
1471:
1.79 kristaps 1472: /*
1.243 schwarze 1473: * This is neither a roff request nor a user-defined macro.
1474: * Let the standard macro set parsers handle it.
1.79 kristaps 1475: */
1.67 kristaps 1476:
1.294 ! schwarze 1477: if (t == TOKEN_NONE)
1.277 schwarze 1478: return ROFF_CONT;
1.243 schwarze 1479:
1480: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1481:
1.277 schwarze 1482: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.74 kristaps 1483: }
1484:
1.117 kristaps 1485: void
1.74 kristaps 1486: roff_endparse(struct roff *r)
1487: {
1488:
1.110 kristaps 1489: if (r->last)
1.221 schwarze 1490: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1491: r->last->line, r->last->col,
1492: roffs[r->last->tok].name);
1.117 kristaps 1493:
1.125 kristaps 1494: if (r->eqn) {
1.221 schwarze 1495: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1496: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.151 kristaps 1497: eqn_end(&r->eqn);
1.125 kristaps 1498: }
1499:
1.117 kristaps 1500: if (r->tbl) {
1.221 schwarze 1501: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1502: r->tbl->line, r->tbl->pos, "TS");
1.151 kristaps 1503: tbl_end(&r->tbl);
1.117 kristaps 1504: }
1.67 kristaps 1505: }
1506:
1507: /*
1508: * Parse a roff node's type from the input buffer. This must be in the
1509: * form of ".foo xxx" in the usual way.
1510: */
1.294 ! schwarze 1511: static enum roff_tok
1.214 schwarze 1512: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1513: {
1.214 schwarze 1514: char *cp;
1.106 kristaps 1515: const char *mac;
1516: size_t maclen;
1.294 ! schwarze 1517: enum roff_tok t;
1.67 kristaps 1518:
1.214 schwarze 1519: cp = buf + *pos;
1520:
1521: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 ! schwarze 1522: return TOKEN_NONE;
1.67 kristaps 1523:
1.214 schwarze 1524: mac = cp;
1525: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1526:
1.106 kristaps 1527: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.155 kristaps 1528: ? ROFF_USERDEF : roffhash_find(mac, maclen);
1.67 kristaps 1529:
1.294 ! schwarze 1530: if (t != TOKEN_NONE)
1.214 schwarze 1531: *pos = cp - buf;
1.67 kristaps 1532:
1.277 schwarze 1533: return t;
1.67 kristaps 1534: }
1535:
1.266 schwarze 1536: /* --- handling of request blocks ----------------------------------------- */
1537:
1.67 kristaps 1538: static enum rofferr
1.76 kristaps 1539: roff_cblock(ROFF_ARGS)
1.67 kristaps 1540: {
1541:
1.79 kristaps 1542: /*
1543: * A block-close `..' should only be invoked as a child of an
1544: * ignore macro, otherwise raise a warning and just ignore it.
1545: */
1546:
1.238 schwarze 1547: if (r->last == NULL) {
1.221 schwarze 1548: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1549: ln, ppos, "..");
1.277 schwarze 1550: return ROFF_IGN;
1.76 kristaps 1551: }
1.67 kristaps 1552:
1.81 kristaps 1553: switch (r->last->tok) {
1.207 schwarze 1554: case ROFF_am:
1.220 schwarze 1555: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1556: case ROFF_ami:
1557: case ROFF_de:
1.108 schwarze 1558: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1559: case ROFF_dei:
1560: case ROFF_ig:
1.81 kristaps 1561: break;
1562: default:
1.221 schwarze 1563: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1564: ln, ppos, "..");
1.277 schwarze 1565: return ROFF_IGN;
1.76 kristaps 1566: }
1.67 kristaps 1567:
1.238 schwarze 1568: if (buf->buf[pos] != '\0')
1.217 schwarze 1569: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1570: ".. %s", buf->buf + pos);
1.71 kristaps 1571:
1572: roffnode_pop(r);
1.76 kristaps 1573: roffnode_cleanscope(r);
1.277 schwarze 1574: return ROFF_IGN;
1.71 kristaps 1575:
1.67 kristaps 1576: }
1577:
1.76 kristaps 1578: static void
1579: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1580: {
1581:
1.76 kristaps 1582: while (r->last) {
1.173 schwarze 1583: if (--r->last->endspan != 0)
1.76 kristaps 1584: break;
1585: roffnode_pop(r);
1586: }
1.67 kristaps 1587: }
1588:
1.195 schwarze 1589: static void
1590: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1591: {
1592:
1.76 kristaps 1593: if (NULL == r->last) {
1.221 schwarze 1594: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1595: ln, ppos, "\\}");
1.195 schwarze 1596: return;
1.76 kristaps 1597: }
1598:
1.82 kristaps 1599: switch (r->last->tok) {
1.207 schwarze 1600: case ROFF_el:
1601: case ROFF_ie:
1602: case ROFF_if:
1.82 kristaps 1603: break;
1604: default:
1.221 schwarze 1605: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1606: ln, ppos, "\\}");
1.195 schwarze 1607: return;
1.75 kristaps 1608: }
1609:
1.76 kristaps 1610: if (r->last->endspan > -1) {
1.221 schwarze 1611: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1612: ln, ppos, "\\}");
1.195 schwarze 1613: return;
1.76 kristaps 1614: }
1615:
1.75 kristaps 1616: roffnode_pop(r);
1.76 kristaps 1617: roffnode_cleanscope(r);
1.195 schwarze 1618: return;
1.76 kristaps 1619: }
1620:
1621: static enum rofferr
1.80 kristaps 1622: roff_block(ROFF_ARGS)
1.76 kristaps 1623: {
1.220 schwarze 1624: const char *name;
1625: char *iname, *cp;
1.213 schwarze 1626: size_t namesz;
1.106 kristaps 1627:
1.220 schwarze 1628: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1629:
1.238 schwarze 1630: if (tok == ROFF_de1)
1.220 schwarze 1631: tok = ROFF_de;
1.251 schwarze 1632: else if (tok == ROFF_dei1)
1633: tok = ROFF_dei;
1.238 schwarze 1634: else if (tok == ROFF_am1)
1.220 schwarze 1635: tok = ROFF_am;
1.251 schwarze 1636: else if (tok == ROFF_ami1)
1637: tok = ROFF_ami;
1.220 schwarze 1638:
1639: /* Parse the macro name argument. */
1640:
1.238 schwarze 1641: cp = buf->buf + pos;
1642: if (tok == ROFF_ig) {
1.220 schwarze 1643: iname = NULL;
1644: namesz = 0;
1645: } else {
1646: iname = cp;
1647: namesz = roff_getname(r, &cp, ln, ppos);
1648: iname[namesz] = '\0';
1649: }
1.107 kristaps 1650:
1.220 schwarze 1651: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1652:
1.238 schwarze 1653: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1654: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1655: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1656: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1657: "%.*s", (int)namesz, iname);
1658: namesz = 0;
1659: } else
1660: namesz = strlen(name);
1661: } else
1662: name = iname;
1.107 kristaps 1663:
1.238 schwarze 1664: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1665: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1666: ln, ppos, roffs[tok].name);
1.277 schwarze 1667: return ROFF_IGN;
1.220 schwarze 1668: }
1.80 kristaps 1669:
1.106 kristaps 1670: roffnode_push(r, tok, name, ln, ppos);
1671:
1672: /*
1673: * At the beginning of a `de' macro, clear the existing string
1674: * with the same name, if there is one. New content will be
1.193 schwarze 1675: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1676: */
1.107 kristaps 1677:
1.238 schwarze 1678: if (tok == ROFF_de || tok == ROFF_dei)
1.213 schwarze 1679: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.76 kristaps 1680:
1.238 schwarze 1681: if (*cp == '\0')
1.277 schwarze 1682: return ROFF_IGN;
1.78 kristaps 1683:
1.220 schwarze 1684: /* Get the custom end marker. */
1.107 kristaps 1685:
1.220 schwarze 1686: iname = cp;
1.213 schwarze 1687: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1688:
1689: /* Resolve the end marker if it is indirect. */
1690:
1.238 schwarze 1691: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1692: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1693: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1694: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1695: "%.*s", (int)namesz, iname);
1696: namesz = 0;
1697: } else
1698: namesz = strlen(name);
1699: } else
1700: name = iname;
1701:
1.213 schwarze 1702: if (namesz)
1703: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1704:
1.238 schwarze 1705: if (*cp != '\0')
1.217 schwarze 1706: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1707: ln, pos, ".%s ... %s", roffs[tok].name, cp);
1.74 kristaps 1708:
1.277 schwarze 1709: return ROFF_IGN;
1.78 kristaps 1710: }
1711:
1712: static enum rofferr
1.80 kristaps 1713: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1714: {
1.294 ! schwarze 1715: enum roff_tok t;
1.79 kristaps 1716: int i, j;
1717:
1718: /*
1719: * First check whether a custom macro exists at this level. If
1720: * it does, then check against it. This is some of groff's
1721: * stranger behaviours. If we encountered a custom end-scope
1722: * tag and that tag also happens to be a "real" macro, then we
1723: * need to try interpreting it again as a real macro. If it's
1724: * not, then return ignore. Else continue.
1725: */
1726:
1727: if (r->last->end) {
1.130 kristaps 1728: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1729: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1730: break;
1731:
1.238 schwarze 1732: if (r->last->end[j] == '\0' &&
1733: (buf->buf[i] == '\0' ||
1734: buf->buf[i] == ' ' ||
1735: buf->buf[i] == '\t')) {
1.79 kristaps 1736: roffnode_pop(r);
1737: roffnode_cleanscope(r);
1738:
1.238 schwarze 1739: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1740: i++;
1741:
1742: pos = i;
1.238 schwarze 1743: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 ! schwarze 1744: TOKEN_NONE)
1.277 schwarze 1745: return ROFF_RERUN;
1746: return ROFF_IGN;
1.79 kristaps 1747: }
1748: }
1749:
1750: /*
1751: * If we have no custom end-query or lookup failed, then try
1752: * pulling it out of the hashtable.
1753: */
1754:
1.238 schwarze 1755: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1756:
1.238 schwarze 1757: if (t != ROFF_cblock) {
1758: if (tok != ROFF_ig)
1759: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1760: return ROFF_IGN;
1.106 kristaps 1761: }
1.79 kristaps 1762:
1.277 schwarze 1763: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1764: }
1765:
1766: static enum rofferr
1.80 kristaps 1767: roff_block_text(ROFF_ARGS)
1.78 kristaps 1768: {
1769:
1.238 schwarze 1770: if (tok != ROFF_ig)
1771: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1772:
1.277 schwarze 1773: return ROFF_IGN;
1.78 kristaps 1774: }
1775:
1776: static enum rofferr
1.82 kristaps 1777: roff_cond_sub(ROFF_ARGS)
1778: {
1.294 ! schwarze 1779: enum roff_tok t;
1.139 kristaps 1780: char *ep;
1.198 schwarze 1781: int rr;
1.82 kristaps 1782:
1783: rr = r->last->rule;
1.139 kristaps 1784: roffnode_cleanscope(r);
1.238 schwarze 1785: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.82 kristaps 1786:
1.139 kristaps 1787: /*
1.177 schwarze 1788: * Fully handle known macros when they are structurally
1789: * required or when the conditional evaluated to true.
1.87 kristaps 1790: */
1791:
1.294 ! schwarze 1792: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.277 schwarze 1793: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.144 kristaps 1794:
1.196 schwarze 1795: /*
1796: * If `\}' occurs on a macro line without a preceding macro,
1797: * drop the line completely.
1798: */
1799:
1.238 schwarze 1800: ep = buf->buf + pos;
1801: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1802: rr = 0;
1.196 schwarze 1803:
1.177 schwarze 1804: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1805:
1.238 schwarze 1806: while ((ep = strchr(ep, '\\')) != NULL) {
1807: if (*(++ep) == '}') {
1.197 schwarze 1808: *ep = '&';
1.238 schwarze 1809: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1810: }
1.247 schwarze 1811: if (*ep != '\0')
1812: ++ep;
1.177 schwarze 1813: }
1.277 schwarze 1814: return rr ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 1815: }
1816:
1817: static enum rofferr
1818: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1819: {
1.140 kristaps 1820: char *ep;
1.198 schwarze 1821: int rr;
1.82 kristaps 1822:
1823: rr = r->last->rule;
1.140 kristaps 1824: roffnode_cleanscope(r);
1.82 kristaps 1825:
1.238 schwarze 1826: ep = buf->buf + pos;
1827: while ((ep = strchr(ep, '\\')) != NULL) {
1828: if (*(++ep) == '}') {
1.197 schwarze 1829: *ep = '&';
1.238 schwarze 1830: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1831: }
1.247 schwarze 1832: if (*ep != '\0')
1833: ++ep;
1.78 kristaps 1834: }
1.277 schwarze 1835: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 1836: }
1837:
1.266 schwarze 1838: /* --- handling of numeric and conditional expressions -------------------- */
1839:
1.204 schwarze 1840: /*
1841: * Parse a single signed integer number. Stop at the first non-digit.
1842: * If there is at least one digit, return success and advance the
1843: * parse point, else return failure and let the parse point unchanged.
1844: * Ignore overflows, treat them just like the C language.
1845: */
1.184 schwarze 1846: static int
1.261 schwarze 1847: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 1848: {
1.261 schwarze 1849: int myres, scaled, n, p;
1.206 schwarze 1850:
1851: if (NULL == res)
1852: res = &myres;
1.184 schwarze 1853:
1854: p = *pos;
1855: n = v[p] == '-';
1.261 schwarze 1856: if (n || v[p] == '+')
1.184 schwarze 1857: p++;
1858:
1.261 schwarze 1859: if (flags & ROFFNUM_WHITE)
1860: while (isspace((unsigned char)v[p]))
1861: p++;
1862:
1.184 schwarze 1863: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 1864: *res = 10 * *res + v[p] - '0';
1.184 schwarze 1865: if (p == *pos + n)
1866: return 0;
1867:
1868: if (n)
1869: *res = -*res;
1870:
1.254 schwarze 1871: /* Each number may be followed by one optional scaling unit. */
1872:
1873: switch (v[p]) {
1874: case 'f':
1.261 schwarze 1875: scaled = *res * 65536;
1.254 schwarze 1876: break;
1877: case 'i':
1.261 schwarze 1878: scaled = *res * 240;
1.254 schwarze 1879: break;
1880: case 'c':
1.261 schwarze 1881: scaled = *res * 240 / 2.54;
1.254 schwarze 1882: break;
1883: case 'v':
1884: case 'P':
1.261 schwarze 1885: scaled = *res * 40;
1.254 schwarze 1886: break;
1887: case 'm':
1888: case 'n':
1.261 schwarze 1889: scaled = *res * 24;
1.254 schwarze 1890: break;
1891: case 'p':
1.261 schwarze 1892: scaled = *res * 10 / 3;
1.254 schwarze 1893: break;
1894: case 'u':
1.261 schwarze 1895: scaled = *res;
1.254 schwarze 1896: break;
1897: case 'M':
1.261 schwarze 1898: scaled = *res * 6 / 25;
1.254 schwarze 1899: break;
1900: default:
1.261 schwarze 1901: scaled = *res;
1.254 schwarze 1902: p--;
1903: break;
1904: }
1.261 schwarze 1905: if (flags & ROFFNUM_SCALE)
1906: *res = scaled;
1.254 schwarze 1907:
1908: *pos = p + 1;
1.277 schwarze 1909: return 1;
1.184 schwarze 1910: }
1911:
1.198 schwarze 1912: /*
1913: * Evaluate a string comparison condition.
1914: * The first character is the delimiter.
1915: * Succeed if the string up to its second occurrence
1916: * matches the string up to its third occurence.
1917: * Advance the cursor after the third occurrence
1918: * or lacking that, to the end of the line.
1919: */
1920: static int
1921: roff_evalstrcond(const char *v, int *pos)
1922: {
1923: const char *s1, *s2, *s3;
1924: int match;
1925:
1926: match = 0;
1927: s1 = v + *pos; /* initial delimiter */
1928: s2 = s1 + 1; /* for scanning the first string */
1929: s3 = strchr(s2, *s1); /* for scanning the second string */
1930:
1931: if (NULL == s3) /* found no middle delimiter */
1932: goto out;
1933:
1934: while ('\0' != *++s3) {
1935: if (*s2 != *s3) { /* mismatch */
1936: s3 = strchr(s3, *s1);
1937: break;
1938: }
1939: if (*s3 == *s1) { /* found the final delimiter */
1940: match = 1;
1941: break;
1942: }
1943: s2++;
1944: }
1945:
1946: out:
1947: if (NULL == s3)
1948: s3 = strchr(s2, '\0');
1.242 schwarze 1949: else if (*s3 != '\0')
1.198 schwarze 1950: s3++;
1951: *pos = s3 - v;
1.277 schwarze 1952: return match;
1.198 schwarze 1953: }
1954:
1.204 schwarze 1955: /*
1956: * Evaluate an optionally negated single character, numerical,
1957: * or string condition.
1958: */
1.198 schwarze 1959: static int
1.271 schwarze 1960: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 1961: {
1.271 schwarze 1962: char *cp, *name;
1963: size_t sz;
1.241 schwarze 1964: int number, savepos, wanttrue;
1.88 kristaps 1965:
1.198 schwarze 1966: if ('!' == v[*pos]) {
1967: wanttrue = 0;
1968: (*pos)++;
1969: } else
1970: wanttrue = 1;
1971:
1.88 kristaps 1972: switch (v[*pos]) {
1.240 schwarze 1973: case '\0':
1.277 schwarze 1974: return 0;
1.207 schwarze 1975: case 'n':
1976: case 'o':
1.88 kristaps 1977: (*pos)++;
1.277 schwarze 1978: return wanttrue;
1.207 schwarze 1979: case 'c':
1980: case 'd':
1981: case 'e':
1982: case 't':
1.239 schwarze 1983: case 'v':
1.88 kristaps 1984: (*pos)++;
1.277 schwarze 1985: return !wanttrue;
1.271 schwarze 1986: case 'r':
1987: cp = name = v + ++*pos;
1988: sz = roff_getname(r, &cp, ln, *pos);
1989: *pos = cp - v;
1.277 schwarze 1990: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.88 kristaps 1991: default:
1992: break;
1993: }
1994:
1.241 schwarze 1995: savepos = *pos;
1.261 schwarze 1996: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 1997: return (number > 0) == wanttrue;
1.241 schwarze 1998: else if (*pos == savepos)
1.277 schwarze 1999: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2000: else
1.277 schwarze 2001: return 0;
1.88 kristaps 2002: }
2003:
1.74 kristaps 2004: static enum rofferr
1.103 kristaps 2005: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2006: {
1.123 schwarze 2007:
1.277 schwarze 2008: return ROFF_IGN;
1.89 kristaps 2009: }
2010:
1.104 kristaps 2011: static enum rofferr
1.251 schwarze 2012: roff_insec(ROFF_ARGS)
2013: {
2014:
2015: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
2016: ln, ppos, roffs[tok].name);
1.277 schwarze 2017: return ROFF_IGN;
1.251 schwarze 2018: }
2019:
2020: static enum rofferr
2021: roff_unsupp(ROFF_ARGS)
2022: {
2023:
2024: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
2025: ln, ppos, roffs[tok].name);
1.277 schwarze 2026: return ROFF_IGN;
1.251 schwarze 2027: }
2028:
2029: static enum rofferr
1.82 kristaps 2030: roff_cond(ROFF_ARGS)
1.74 kristaps 2031: {
1.173 schwarze 2032:
2033: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2034:
1.207 schwarze 2035: /*
1.134 kristaps 2036: * An `.el' has no conditional body: it will consume the value
2037: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2038: * defaults to DENY.
1.134 kristaps 2039: *
2040: * If we're not an `el', however, then evaluate the conditional.
2041: */
1.133 kristaps 2042:
1.238 schwarze 2043: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2044: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2045: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2046:
1.134 kristaps 2047: /*
2048: * An if-else will put the NEGATION of the current evaluated
2049: * conditional into the stack of rules.
2050: */
2051:
1.238 schwarze 2052: if (tok == ROFF_ie) {
1.223 schwarze 2053: if (r->rstackpos + 1 == r->rstacksz) {
2054: r->rstacksz += 16;
2055: r->rstack = mandoc_reallocarray(r->rstack,
2056: r->rstacksz, sizeof(int));
1.134 kristaps 2057: }
1.198 schwarze 2058: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2059: }
1.88 kristaps 2060:
2061: /* If the parent has false as its rule, then so do we. */
2062:
1.198 schwarze 2063: if (r->last->parent && !r->last->parent->rule)
2064: r->last->rule = 0;
1.88 kristaps 2065:
2066: /*
1.173 schwarze 2067: * Determine scope.
2068: * If there is nothing on the line after the conditional,
2069: * not even whitespace, use next-line scope.
1.88 kristaps 2070: */
1.74 kristaps 2071:
1.238 schwarze 2072: if (buf->buf[pos] == '\0') {
1.173 schwarze 2073: r->last->endspan = 2;
2074: goto out;
2075: }
2076:
1.238 schwarze 2077: while (buf->buf[pos] == ' ')
1.173 schwarze 2078: pos++;
2079:
2080: /* An opening brace requests multiline scope. */
1.75 kristaps 2081:
1.238 schwarze 2082: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2083: r->last->endspan = -1;
2084: pos += 2;
1.272 schwarze 2085: while (buf->buf[pos] == ' ')
2086: pos++;
1.173 schwarze 2087: goto out;
1.207 schwarze 2088: }
1.74 kristaps 2089:
1.77 kristaps 2090: /*
1.173 schwarze 2091: * Anything else following the conditional causes
2092: * single-line scope. Warn if the scope contains
2093: * nothing but trailing whitespace.
1.77 kristaps 2094: */
2095:
1.238 schwarze 2096: if (buf->buf[pos] == '\0')
1.216 schwarze 2097: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
2098: ln, ppos, roffs[tok].name);
1.77 kristaps 2099:
1.173 schwarze 2100: r->last->endspan = 1;
1.74 kristaps 2101:
1.173 schwarze 2102: out:
1.75 kristaps 2103: *offs = pos;
1.277 schwarze 2104: return ROFF_RERUN;
1.83 schwarze 2105: }
2106:
2107: static enum rofferr
1.92 schwarze 2108: roff_ds(ROFF_ARGS)
2109: {
1.212 schwarze 2110: char *string;
2111: const char *name;
2112: size_t namesz;
1.96 kristaps 2113:
1.251 schwarze 2114: /* Ignore groff compatibility mode for now. */
2115:
2116: if (tok == ROFF_ds1)
2117: tok = ROFF_ds;
2118: else if (tok == ROFF_as1)
2119: tok = ROFF_as;
2120:
1.96 kristaps 2121: /*
1.212 schwarze 2122: * The first word is the name of the string.
2123: * If it is empty or terminated by an escape sequence,
2124: * abort the `ds' request without defining anything.
1.96 kristaps 2125: */
1.92 schwarze 2126:
1.238 schwarze 2127: name = string = buf->buf + pos;
2128: if (*name == '\0')
1.277 schwarze 2129: return ROFF_IGN;
1.92 schwarze 2130:
1.212 schwarze 2131: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2132: if (name[namesz] == '\\')
1.277 schwarze 2133: return ROFF_IGN;
1.212 schwarze 2134:
2135: /* Read past the initial double-quote, if any. */
1.238 schwarze 2136: if (*string == '"')
1.92 schwarze 2137: string++;
2138:
1.96 kristaps 2139: /* The rest is the value. */
1.212 schwarze 2140: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2141: ROFF_as == tok);
1.277 schwarze 2142: return ROFF_IGN;
1.92 schwarze 2143: }
2144:
1.204 schwarze 2145: /*
2146: * Parse a single operator, one or two characters long.
2147: * If the operator is recognized, return success and advance the
2148: * parse point, else return failure and let the parse point unchanged.
2149: */
2150: static int
2151: roff_getop(const char *v, int *pos, char *res)
2152: {
2153:
2154: *res = v[*pos];
2155:
2156: switch (*res) {
1.207 schwarze 2157: case '+':
2158: case '-':
2159: case '*':
2160: case '/':
2161: case '%':
2162: case '&':
2163: case ':':
1.204 schwarze 2164: break;
2165: case '<':
2166: switch (v[*pos + 1]) {
1.207 schwarze 2167: case '=':
1.204 schwarze 2168: *res = 'l';
2169: (*pos)++;
2170: break;
1.207 schwarze 2171: case '>':
1.204 schwarze 2172: *res = '!';
2173: (*pos)++;
2174: break;
1.207 schwarze 2175: case '?':
1.204 schwarze 2176: *res = 'i';
2177: (*pos)++;
2178: break;
2179: default:
2180: break;
2181: }
2182: break;
2183: case '>':
2184: switch (v[*pos + 1]) {
1.207 schwarze 2185: case '=':
1.204 schwarze 2186: *res = 'g';
2187: (*pos)++;
2188: break;
1.207 schwarze 2189: case '?':
1.204 schwarze 2190: *res = 'a';
2191: (*pos)++;
2192: break;
2193: default:
2194: break;
2195: }
2196: break;
2197: case '=':
2198: if ('=' == v[*pos + 1])
2199: (*pos)++;
2200: break;
2201: default:
1.277 schwarze 2202: return 0;
1.204 schwarze 2203: }
2204: (*pos)++;
2205:
1.277 schwarze 2206: return *res;
1.204 schwarze 2207: }
2208:
2209: /*
2210: * Evaluate either a parenthesized numeric expression
2211: * or a single signed integer number.
2212: */
2213: static int
1.235 schwarze 2214: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2215: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2216: {
2217:
2218: if ('(' != v[*pos])
1.277 schwarze 2219: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2220:
2221: (*pos)++;
1.261 schwarze 2222: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2223: return 0;
1.204 schwarze 2224:
1.206 schwarze 2225: /*
2226: * Omission of the closing parenthesis
2227: * is an error in validation mode,
2228: * but ignored in evaluation mode.
2229: */
2230:
1.204 schwarze 2231: if (')' == v[*pos])
2232: (*pos)++;
1.206 schwarze 2233: else if (NULL == res)
1.277 schwarze 2234: return 0;
1.204 schwarze 2235:
1.277 schwarze 2236: return 1;
1.204 schwarze 2237: }
2238:
2239: /*
2240: * Evaluate a complete numeric expression.
2241: * Proceed left to right, there is no concept of precedence.
2242: */
2243: static int
1.235 schwarze 2244: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2245: int *pos, int *res, int flags)
1.204 schwarze 2246: {
2247: int mypos, operand2;
2248: char operator;
2249:
2250: if (NULL == pos) {
2251: mypos = 0;
2252: pos = &mypos;
2253: }
2254:
1.261 schwarze 2255: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2256: while (isspace((unsigned char)v[*pos]))
2257: (*pos)++;
2258:
1.261 schwarze 2259: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2260: return 0;
1.204 schwarze 2261:
2262: while (1) {
1.261 schwarze 2263: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2264: while (isspace((unsigned char)v[*pos]))
2265: (*pos)++;
2266:
2267: if ( ! roff_getop(v, pos, &operator))
2268: break;
2269:
1.261 schwarze 2270: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2271: while (isspace((unsigned char)v[*pos]))
2272: (*pos)++;
2273:
1.261 schwarze 2274: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2275: return 0;
1.204 schwarze 2276:
1.261 schwarze 2277: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2278: while (isspace((unsigned char)v[*pos]))
2279: (*pos)++;
1.206 schwarze 2280:
2281: if (NULL == res)
2282: continue;
1.204 schwarze 2283:
2284: switch (operator) {
1.207 schwarze 2285: case '+':
1.204 schwarze 2286: *res += operand2;
2287: break;
1.207 schwarze 2288: case '-':
1.204 schwarze 2289: *res -= operand2;
2290: break;
1.207 schwarze 2291: case '*':
1.204 schwarze 2292: *res *= operand2;
2293: break;
1.207 schwarze 2294: case '/':
1.244 schwarze 2295: if (operand2 == 0) {
1.235 schwarze 2296: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2297: r->parse, ln, *pos, v);
2298: *res = 0;
2299: break;
2300: }
1.204 schwarze 2301: *res /= operand2;
2302: break;
1.207 schwarze 2303: case '%':
1.244 schwarze 2304: if (operand2 == 0) {
2305: mandoc_msg(MANDOCERR_DIVZERO,
2306: r->parse, ln, *pos, v);
2307: *res = 0;
2308: break;
2309: }
1.204 schwarze 2310: *res %= operand2;
2311: break;
1.207 schwarze 2312: case '<':
1.204 schwarze 2313: *res = *res < operand2;
2314: break;
1.207 schwarze 2315: case '>':
1.204 schwarze 2316: *res = *res > operand2;
2317: break;
1.207 schwarze 2318: case 'l':
1.204 schwarze 2319: *res = *res <= operand2;
2320: break;
1.207 schwarze 2321: case 'g':
1.204 schwarze 2322: *res = *res >= operand2;
2323: break;
1.207 schwarze 2324: case '=':
1.204 schwarze 2325: *res = *res == operand2;
2326: break;
1.207 schwarze 2327: case '!':
1.204 schwarze 2328: *res = *res != operand2;
2329: break;
1.207 schwarze 2330: case '&':
1.204 schwarze 2331: *res = *res && operand2;
2332: break;
1.207 schwarze 2333: case ':':
1.204 schwarze 2334: *res = *res || operand2;
2335: break;
1.207 schwarze 2336: case 'i':
1.204 schwarze 2337: if (operand2 < *res)
2338: *res = operand2;
2339: break;
1.207 schwarze 2340: case 'a':
1.204 schwarze 2341: if (operand2 > *res)
2342: *res = operand2;
2343: break;
2344: default:
2345: abort();
2346: }
2347: }
1.277 schwarze 2348: return 1;
1.204 schwarze 2349: }
2350:
1.266 schwarze 2351: /* --- register management ------------------------------------------------ */
2352:
1.180 schwarze 2353: void
1.187 schwarze 2354: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2355: {
1.180 schwarze 2356: struct roffreg *reg;
2357:
2358: /* Search for an existing register with the same name. */
2359: reg = r->regtab;
2360:
2361: while (reg && strcmp(name, reg->key.p))
2362: reg = reg->next;
1.147 kristaps 2363:
1.180 schwarze 2364: if (NULL == reg) {
2365: /* Create a new register. */
2366: reg = mandoc_malloc(sizeof(struct roffreg));
2367: reg->key.p = mandoc_strdup(name);
2368: reg->key.sz = strlen(name);
1.187 schwarze 2369: reg->val = 0;
1.180 schwarze 2370: reg->next = r->regtab;
2371: r->regtab = reg;
2372: }
2373:
1.187 schwarze 2374: if ('+' == sign)
2375: reg->val += val;
2376: else if ('-' == sign)
2377: reg->val -= val;
2378: else
2379: reg->val = val;
1.147 kristaps 2380: }
2381:
1.192 schwarze 2382: /*
2383: * Handle some predefined read-only number registers.
2384: * For now, return -1 if the requested register is not predefined;
2385: * in case a predefined read-only register having the value -1
2386: * were to turn up, another special value would have to be chosen.
2387: */
2388: static int
1.273 schwarze 2389: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2390: {
2391:
2392: switch (*name) {
1.273 schwarze 2393: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2394: return r->argc;
1.207 schwarze 2395: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2396: return 0;
1.207 schwarze 2397: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2398: return 1;
1.207 schwarze 2399: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2400: return 24;
1.207 schwarze 2401: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2402: return 0;
1.207 schwarze 2403: case 'T': /* Some output device is always defined. */
1.277 schwarze 2404: return 1;
1.207 schwarze 2405: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2406: return 40;
1.192 schwarze 2407: default:
1.277 schwarze 2408: return -1;
1.192 schwarze 2409: }
2410: }
2411:
1.181 schwarze 2412: int
1.180 schwarze 2413: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2414: {
1.180 schwarze 2415: struct roffreg *reg;
1.192 schwarze 2416: int val;
2417:
2418: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2419: val = roff_getregro(r, name + 1);
1.192 schwarze 2420: if (-1 != val)
1.277 schwarze 2421: return val;
1.192 schwarze 2422: }
1.180 schwarze 2423:
2424: for (reg = r->regtab; reg; reg = reg->next)
2425: if (0 == strcmp(name, reg->key.p))
1.277 schwarze 2426: return reg->val;
1.181 schwarze 2427:
1.277 schwarze 2428: return 0;
1.181 schwarze 2429: }
2430:
2431: static int
2432: roff_getregn(const struct roff *r, const char *name, size_t len)
2433: {
2434: struct roffreg *reg;
1.192 schwarze 2435: int val;
2436:
2437: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2438: val = roff_getregro(r, name + 1);
1.192 schwarze 2439: if (-1 != val)
1.277 schwarze 2440: return val;
1.192 schwarze 2441: }
1.181 schwarze 2442:
2443: for (reg = r->regtab; reg; reg = reg->next)
2444: if (len == reg->key.sz &&
2445: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2446: return reg->val;
1.271 schwarze 2447:
1.277 schwarze 2448: return 0;
1.271 schwarze 2449: }
2450:
2451: static int
2452: roff_hasregn(const struct roff *r, const char *name, size_t len)
2453: {
2454: struct roffreg *reg;
2455: int val;
2456:
2457: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2458: val = roff_getregro(r, name + 1);
1.271 schwarze 2459: if (-1 != val)
1.277 schwarze 2460: return 1;
1.271 schwarze 2461: }
2462:
2463: for (reg = r->regtab; reg; reg = reg->next)
2464: if (len == reg->key.sz &&
2465: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2466: return 1;
1.147 kristaps 2467:
1.277 schwarze 2468: return 0;
1.147 kristaps 2469: }
2470:
1.180 schwarze 2471: static void
2472: roff_freereg(struct roffreg *reg)
1.147 kristaps 2473: {
1.180 schwarze 2474: struct roffreg *old_reg;
1.147 kristaps 2475:
1.180 schwarze 2476: while (NULL != reg) {
2477: free(reg->key.p);
2478: old_reg = reg;
2479: reg = reg->next;
2480: free(old_reg);
2481: }
1.147 kristaps 2482: }
1.92 schwarze 2483:
2484: static enum rofferr
1.89 kristaps 2485: roff_nr(ROFF_ARGS)
1.83 schwarze 2486: {
1.212 schwarze 2487: char *key, *val;
2488: size_t keysz;
1.138 kristaps 2489: int iv;
1.187 schwarze 2490: char sign;
1.89 kristaps 2491:
1.238 schwarze 2492: key = val = buf->buf + pos;
2493: if (*key == '\0')
1.277 schwarze 2494: return ROFF_IGN;
1.212 schwarze 2495:
2496: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2497: if (key[keysz] == '\\')
1.277 schwarze 2498: return ROFF_IGN;
1.212 schwarze 2499: key[keysz] = '\0';
1.89 kristaps 2500:
1.187 schwarze 2501: sign = *val;
1.238 schwarze 2502: if (sign == '+' || sign == '-')
1.187 schwarze 2503: val++;
2504:
1.261 schwarze 2505: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2506: roff_setreg(r, key, iv, sign);
1.109 kristaps 2507:
1.277 schwarze 2508: return ROFF_IGN;
1.203 schwarze 2509: }
2510:
2511: static enum rofferr
2512: roff_rr(ROFF_ARGS)
2513: {
2514: struct roffreg *reg, **prev;
1.212 schwarze 2515: char *name, *cp;
2516: size_t namesz;
1.203 schwarze 2517:
1.238 schwarze 2518: name = cp = buf->buf + pos;
2519: if (*name == '\0')
1.277 schwarze 2520: return ROFF_IGN;
1.212 schwarze 2521: namesz = roff_getname(r, &cp, ln, pos);
2522: name[namesz] = '\0';
1.203 schwarze 2523:
2524: prev = &r->regtab;
2525: while (1) {
2526: reg = *prev;
1.238 schwarze 2527: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2528: break;
2529: prev = ®->next;
2530: }
1.238 schwarze 2531: if (reg != NULL) {
1.203 schwarze 2532: *prev = reg->next;
2533: free(reg->key.p);
2534: free(reg);
2535: }
1.277 schwarze 2536: return ROFF_IGN;
1.122 schwarze 2537: }
2538:
1.266 schwarze 2539: /* --- handler functions for roff requests -------------------------------- */
2540:
1.122 schwarze 2541: static enum rofferr
2542: roff_rm(ROFF_ARGS)
2543: {
2544: const char *name;
2545: char *cp;
1.212 schwarze 2546: size_t namesz;
1.122 schwarze 2547:
1.238 schwarze 2548: cp = buf->buf + pos;
2549: while (*cp != '\0') {
1.212 schwarze 2550: name = cp;
1.238 schwarze 2551: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2552: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.238 schwarze 2553: if (name[namesz] == '\\')
1.212 schwarze 2554: break;
1.122 schwarze 2555: }
1.277 schwarze 2556: return ROFF_IGN;
1.178 schwarze 2557: }
2558:
2559: static enum rofferr
2560: roff_it(ROFF_ARGS)
2561: {
2562: int iv;
2563:
2564: /* Parse the number of lines. */
1.261 schwarze 2565:
2566: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2567: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2568: ln, ppos, buf->buf + 1);
1.277 schwarze 2569: return ROFF_IGN;
1.178 schwarze 2570: }
2571:
1.262 schwarze 2572: while (isspace((unsigned char)buf->buf[pos]))
2573: pos++;
2574:
2575: /*
2576: * Arm the input line trap.
2577: * Special-casing "an-trap" is an ugly workaround to cope
2578: * with DocBook stupidly fiddling with man(7) internals.
2579: */
1.261 schwarze 2580:
1.178 schwarze 2581: roffit_lines = iv;
1.262 schwarze 2582: roffit_macro = mandoc_strdup(iv != 1 ||
2583: strcmp(buf->buf + pos, "an-trap") ?
2584: buf->buf + pos : "br");
1.277 schwarze 2585: return ROFF_IGN;
1.175 schwarze 2586: }
2587:
2588: static enum rofferr
2589: roff_Dd(ROFF_ARGS)
2590: {
2591: const char *const *cp;
2592:
1.227 schwarze 2593: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.175 schwarze 2594: for (cp = __mdoc_reserved; *cp; cp++)
2595: roff_setstr(r, *cp, NULL, 0);
2596:
1.227 schwarze 2597: if (r->format == 0)
2598: r->format = MPARSE_MDOC;
2599:
1.277 schwarze 2600: return ROFF_CONT;
1.175 schwarze 2601: }
2602:
2603: static enum rofferr
2604: roff_TH(ROFF_ARGS)
2605: {
2606: const char *const *cp;
2607:
1.227 schwarze 2608: if ((r->options & MPARSE_QUICK) == 0)
1.175 schwarze 2609: for (cp = __man_reserved; *cp; cp++)
2610: roff_setstr(r, *cp, NULL, 0);
2611:
1.227 schwarze 2612: if (r->format == 0)
2613: r->format = MPARSE_MAN;
2614:
1.277 schwarze 2615: return ROFF_CONT;
1.109 kristaps 2616: }
2617:
2618: static enum rofferr
2619: roff_TE(ROFF_ARGS)
2620: {
2621:
2622: if (NULL == r->tbl)
1.221 schwarze 2623: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2624: ln, ppos, "TE");
1.258 schwarze 2625: else if ( ! tbl_end(&r->tbl)) {
2626: free(buf->buf);
2627: buf->buf = mandoc_strdup(".sp");
2628: buf->sz = 4;
1.277 schwarze 2629: return ROFF_REPARSE;
1.258 schwarze 2630: }
1.277 schwarze 2631: return ROFF_IGN;
1.112 kristaps 2632: }
2633:
2634: static enum rofferr
2635: roff_T_(ROFF_ARGS)
2636: {
2637:
2638: if (NULL == r->tbl)
1.221 schwarze 2639: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2640: ln, ppos, "T&");
1.112 kristaps 2641: else
1.116 kristaps 2642: tbl_restart(ppos, ln, r->tbl);
1.112 kristaps 2643:
1.277 schwarze 2644: return ROFF_IGN;
1.109 kristaps 2645: }
2646:
1.230 schwarze 2647: /*
2648: * Handle in-line equation delimiters.
2649: */
2650: static enum rofferr
1.238 schwarze 2651: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2652: {
1.233 schwarze 2653: char *cp1, *cp2;
2654: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2655:
1.230 schwarze 2656: /*
2657: * Outside equations, look for an opening delimiter.
2658: * If we are inside an equation, we already know it is
2659: * in-line, or this function wouldn't have been called;
2660: * so look for a closing delimiter.
2661: */
2662:
1.238 schwarze 2663: cp1 = buf->buf + pos;
1.230 schwarze 2664: cp2 = strchr(cp1, r->eqn == NULL ?
2665: r->last_eqn->odelim : r->last_eqn->cdelim);
2666: if (cp2 == NULL)
1.277 schwarze 2667: return ROFF_CONT;
1.230 schwarze 2668:
1.233 schwarze 2669: *cp2++ = '\0';
2670: bef_pr = bef_nl = aft_nl = aft_pr = "";
2671:
2672: /* Handle preceding text, protecting whitespace. */
2673:
1.238 schwarze 2674: if (*buf->buf != '\0') {
1.233 schwarze 2675: if (r->eqn == NULL)
2676: bef_pr = "\\&";
2677: bef_nl = "\n";
2678: }
2679:
2680: /*
2681: * Prepare replacing the delimiter with an equation macro
2682: * and drop leading white space from the equation.
2683: */
1.230 schwarze 2684:
1.233 schwarze 2685: if (r->eqn == NULL) {
2686: while (*cp2 == ' ')
2687: cp2++;
2688: mac = ".EQ";
2689: } else
2690: mac = ".EN";
2691:
2692: /* Handle following text, protecting whitespace. */
2693:
2694: if (*cp2 != '\0') {
2695: aft_nl = "\n";
2696: if (r->eqn != NULL)
2697: aft_pr = "\\&";
2698: }
2699:
2700: /* Do the actual replacement. */
2701:
1.238 schwarze 2702: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2703: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2704: free(buf->buf);
2705: buf->buf = cp1;
1.230 schwarze 2706:
2707: /* Toggle the in-line state of the eqn subsystem. */
2708:
2709: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2710: return ROFF_REPARSE;
1.151 kristaps 2711: }
2712:
1.235 schwarze 2713: static enum rofferr
2714: roff_EQ(ROFF_ARGS)
1.125 kristaps 2715: {
1.151 kristaps 2716: struct eqn_node *e;
1.125 kristaps 2717:
1.238 schwarze 2718: assert(r->eqn == NULL);
1.235 schwarze 2719: e = eqn_alloc(ppos, ln, r->parse);
1.125 kristaps 2720:
1.230 schwarze 2721: if (r->last_eqn) {
1.125 kristaps 2722: r->last_eqn->next = e;
1.230 schwarze 2723: e->delim = r->last_eqn->delim;
2724: e->odelim = r->last_eqn->odelim;
2725: e->cdelim = r->last_eqn->cdelim;
2726: } else
1.125 kristaps 2727: r->first_eqn = r->last_eqn = e;
2728:
2729: r->eqn = r->last_eqn = e;
1.151 kristaps 2730:
1.238 schwarze 2731: if (buf->buf[pos] != '\0')
1.235 schwarze 2732: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2733: ".EQ %s", buf->buf + pos);
1.151 kristaps 2734:
1.277 schwarze 2735: return ROFF_IGN;
1.125 kristaps 2736: }
2737:
2738: static enum rofferr
2739: roff_EN(ROFF_ARGS)
2740: {
2741:
1.221 schwarze 2742: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.277 schwarze 2743: return ROFF_IGN;
1.125 kristaps 2744: }
2745:
2746: static enum rofferr
1.109 kristaps 2747: roff_TS(ROFF_ARGS)
2748: {
1.176 schwarze 2749: struct tbl_node *tbl;
1.89 kristaps 2750:
1.115 kristaps 2751: if (r->tbl) {
1.221 schwarze 2752: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2753: ln, ppos, "TS breaks TS");
1.151 kristaps 2754: tbl_end(&r->tbl);
1.115 kristaps 2755: }
1.83 schwarze 2756:
1.176 schwarze 2757: tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2758:
2759: if (r->last_tbl)
1.176 schwarze 2760: r->last_tbl->next = tbl;
1.113 kristaps 2761: else
1.176 schwarze 2762: r->first_tbl = r->last_tbl = tbl;
1.113 kristaps 2763:
1.176 schwarze 2764: r->tbl = r->last_tbl = tbl;
1.277 schwarze 2765: return ROFF_IGN;
1.251 schwarze 2766: }
2767:
2768: static enum rofferr
2769: roff_brp(ROFF_ARGS)
2770: {
2771:
2772: buf->buf[pos - 1] = '\0';
1.277 schwarze 2773: return ROFF_CONT;
1.92 schwarze 2774: }
2775:
1.105 kristaps 2776: static enum rofferr
1.174 kristaps 2777: roff_cc(ROFF_ARGS)
2778: {
2779: const char *p;
2780:
1.238 schwarze 2781: p = buf->buf + pos;
1.174 kristaps 2782:
1.238 schwarze 2783: if (*p == '\0' || (r->control = *p++) == '.')
1.174 kristaps 2784: r->control = 0;
2785:
1.238 schwarze 2786: if (*p != '\0')
1.260 schwarze 2787: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2788: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 2789:
1.277 schwarze 2790: return ROFF_IGN;
1.174 kristaps 2791: }
2792:
2793: static enum rofferr
1.164 kristaps 2794: roff_tr(ROFF_ARGS)
2795: {
2796: const char *p, *first, *second;
2797: size_t fsz, ssz;
2798: enum mandoc_esc esc;
2799:
1.238 schwarze 2800: p = buf->buf + pos;
1.164 kristaps 2801:
1.238 schwarze 2802: if (*p == '\0') {
1.260 schwarze 2803: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 2804: return ROFF_IGN;
1.164 kristaps 2805: }
2806:
1.238 schwarze 2807: while (*p != '\0') {
1.164 kristaps 2808: fsz = ssz = 1;
2809:
2810: first = p++;
1.238 schwarze 2811: if (*first == '\\') {
1.164 kristaps 2812: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2813: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2814: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2815: ln, (int)(p - buf->buf), first);
1.277 schwarze 2816: return ROFF_IGN;
1.164 kristaps 2817: }
2818: fsz = (size_t)(p - first);
2819: }
2820:
2821: second = p++;
1.238 schwarze 2822: if (*second == '\\') {
1.164 kristaps 2823: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2824: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2825: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2826: ln, (int)(p - buf->buf), second);
1.277 schwarze 2827: return ROFF_IGN;
1.164 kristaps 2828: }
2829: ssz = (size_t)(p - second);
1.238 schwarze 2830: } else if (*second == '\0') {
1.260 schwarze 2831: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2832: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 2833: second = " ";
1.165 kristaps 2834: p--;
1.164 kristaps 2835: }
2836:
1.167 kristaps 2837: if (fsz > 1) {
1.207 schwarze 2838: roff_setstrn(&r->xmbtab, first, fsz,
2839: second, ssz, 0);
1.167 kristaps 2840: continue;
2841: }
2842:
1.238 schwarze 2843: if (r->xtab == NULL)
1.207 schwarze 2844: r->xtab = mandoc_calloc(128,
2845: sizeof(struct roffstr));
1.167 kristaps 2846:
2847: free(r->xtab[(int)*first].p);
2848: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
2849: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 2850: }
2851:
1.277 schwarze 2852: return ROFF_IGN;
1.164 kristaps 2853: }
2854:
2855: static enum rofferr
1.105 kristaps 2856: roff_so(ROFF_ARGS)
2857: {
1.249 schwarze 2858: char *name, *cp;
1.105 kristaps 2859:
1.238 schwarze 2860: name = buf->buf + pos;
1.224 schwarze 2861: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 2862:
2863: /*
2864: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
2865: * opening anything that's not in our cwd or anything beneath
2866: * it. Thus, explicitly disallow traversing up the file-system
2867: * or using absolute paths.
2868: */
2869:
1.238 schwarze 2870: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 2871: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
2872: ".so %s", name);
1.249 schwarze 2873: buf->sz = mandoc_asprintf(&cp,
2874: ".sp\nSee the file %s.\n.sp", name) + 1;
2875: free(buf->buf);
2876: buf->buf = cp;
2877: *offs = 0;
1.277 schwarze 2878: return ROFF_REPARSE;
1.105 kristaps 2879: }
2880:
2881: *offs = pos;
1.277 schwarze 2882: return ROFF_SO;
1.105 kristaps 2883: }
1.92 schwarze 2884:
1.266 schwarze 2885: /* --- user defined strings and macros ------------------------------------ */
2886:
1.106 kristaps 2887: static enum rofferr
2888: roff_userdef(ROFF_ARGS)
1.99 kristaps 2889: {
1.263 schwarze 2890: const char *arg[9], *ap;
1.106 kristaps 2891: char *cp, *n1, *n2;
1.292 schwarze 2892: int expand_count, i, ib, ie;
1.263 schwarze 2893: size_t asz, rsz;
1.106 kristaps 2894:
2895: /*
2896: * Collect pointers to macro argument strings
1.188 schwarze 2897: * and NUL-terminate them.
1.106 kristaps 2898: */
1.263 schwarze 2899:
1.273 schwarze 2900: r->argc = 0;
1.238 schwarze 2901: cp = buf->buf + pos;
1.273 schwarze 2902: for (i = 0; i < 9; i++) {
2903: if (*cp == '\0')
2904: arg[i] = "";
2905: else {
2906: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
2907: r->argc = i + 1;
2908: }
2909: }
1.99 kristaps 2910:
1.106 kristaps 2911: /*
2912: * Expand macro arguments.
1.99 kristaps 2913: */
1.263 schwarze 2914:
2915: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 2916: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 2917: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 2918: expand_count = 0;
1.263 schwarze 2919: while (*cp != '\0') {
2920:
2921: /* Scan ahead for the next argument invocation. */
2922:
2923: if (*cp++ != '\\')
2924: continue;
2925: if (*cp++ != '$')
2926: continue;
1.274 schwarze 2927: if (*cp == '*') { /* \\$* inserts all arguments */
2928: ib = 0;
2929: ie = r->argc - 1;
2930: } else { /* \\$1 .. \\$9 insert one argument */
2931: ib = ie = *cp - '1';
2932: if (ib < 0 || ib > 8)
2933: continue;
2934: }
1.263 schwarze 2935: cp -= 2;
1.292 schwarze 2936:
2937: /*
2938: * Prevent infinite recursion.
2939: */
2940:
2941: if (cp >= n2)
2942: expand_count = 1;
2943: else if (++expand_count > EXPAND_LIMIT) {
2944: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
2945: ln, (int)(cp - n1), NULL);
1.293 schwarze 2946: free(buf->buf);
2947: buf->buf = n1;
1.292 schwarze 2948: return ROFF_IGN;
2949: }
1.263 schwarze 2950:
2951: /*
2952: * Determine the size of the expanded argument,
2953: * taking escaping of quotes into account.
2954: */
2955:
1.274 schwarze 2956: asz = ie > ib ? ie - ib : 0; /* for blanks */
2957: for (i = ib; i <= ie; i++) {
2958: for (ap = arg[i]; *ap != '\0'; ap++) {
2959: asz++;
2960: if (*ap == '"')
2961: asz += 3;
2962: }
1.263 schwarze 2963: }
2964: if (asz != 3) {
2965:
2966: /*
2967: * Determine the size of the rest of the
2968: * unexpanded macro, including the NUL.
2969: */
2970:
2971: rsz = buf->sz - (cp - n1) - 3;
2972:
2973: /*
2974: * When shrinking, move before
2975: * releasing the storage.
2976: */
2977:
2978: if (asz < 3)
2979: memmove(cp + asz, cp + 3, rsz);
2980:
2981: /*
2982: * Resize the storage for the macro
2983: * and readjust the parse pointer.
2984: */
2985:
2986: buf->sz += asz - 3;
2987: n2 = mandoc_realloc(n1, buf->sz);
2988: cp = n2 + (cp - n1);
2989: n1 = n2;
2990:
2991: /*
2992: * When growing, make room
2993: * for the expanded argument.
2994: */
2995:
2996: if (asz > 3)
2997: memmove(cp + asz, cp + 3, rsz);
2998: }
2999:
3000: /* Copy the expanded argument, escaping quotes. */
3001:
3002: n2 = cp;
1.274 schwarze 3003: for (i = ib; i <= ie; i++) {
3004: for (ap = arg[i]; *ap != '\0'; ap++) {
3005: if (*ap == '"') {
3006: memcpy(n2, "\\(dq", 4);
3007: n2 += 4;
3008: } else
3009: *n2++ = *ap;
3010: }
3011: if (i < ie)
3012: *n2++ = ' ';
1.106 kristaps 3013: }
1.99 kristaps 3014: }
3015:
1.106 kristaps 3016: /*
3017: * Replace the macro invocation
3018: * by the expanded macro.
3019: */
1.263 schwarze 3020:
1.238 schwarze 3021: free(buf->buf);
3022: buf->buf = n1;
1.248 schwarze 3023: *offs = 0;
1.106 kristaps 3024:
1.277 schwarze 3025: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3026: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3027: }
1.121 schwarze 3028:
1.212 schwarze 3029: static size_t
1.121 schwarze 3030: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3031: {
3032: char *name, *cp;
1.212 schwarze 3033: size_t namesz;
1.121 schwarze 3034:
3035: name = *cpp;
3036: if ('\0' == *name)
1.277 schwarze 3037: return 0;
1.121 schwarze 3038:
1.212 schwarze 3039: /* Read until end of name and terminate it with NUL. */
3040: for (cp = name; 1; cp++) {
3041: if ('\0' == *cp || ' ' == *cp) {
3042: namesz = cp - name;
3043: break;
3044: }
1.121 schwarze 3045: if ('\\' != *cp)
3046: continue;
1.215 schwarze 3047: namesz = cp - name;
3048: if ('{' == cp[1] || '}' == cp[1])
3049: break;
1.121 schwarze 3050: cp++;
3051: if ('\\' == *cp)
3052: continue;
1.224 schwarze 3053: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3054: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3055: mandoc_escape((const char **)&cp, NULL, NULL);
3056: break;
1.121 schwarze 3057: }
3058:
3059: /* Read past spaces. */
3060: while (' ' == *cp)
3061: cp++;
3062:
3063: *cpp = cp;
1.277 schwarze 3064: return namesz;
1.121 schwarze 3065: }
3066:
1.106 kristaps 3067: /*
3068: * Store *string into the user-defined string called *name.
3069: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3070: * append == 0: replace mode
3071: * append == 1: single-line append mode
3072: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3073: */
1.94 kristaps 3074: static void
1.106 kristaps 3075: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3076: int append)
1.92 schwarze 3077: {
1.164 kristaps 3078:
3079: roff_setstrn(&r->strtab, name, strlen(name), string,
1.207 schwarze 3080: string ? strlen(string) : 0, append);
1.164 kristaps 3081: }
3082:
3083: static void
1.166 kristaps 3084: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3085: const char *string, size_t stringsz, int append)
1.164 kristaps 3086: {
1.166 kristaps 3087: struct roffkv *n;
1.164 kristaps 3088: char *c;
3089: int i;
3090: size_t oldch, newch;
1.92 schwarze 3091:
1.106 kristaps 3092: /* Search for an existing string with the same name. */
1.164 kristaps 3093: n = *r;
3094:
1.211 schwarze 3095: while (n && (namesz != n->key.sz ||
3096: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3097: n = n->next;
1.94 kristaps 3098:
3099: if (NULL == n) {
1.106 kristaps 3100: /* Create a new string table entry. */
1.166 kristaps 3101: n = mandoc_malloc(sizeof(struct roffkv));
3102: n->key.p = mandoc_strndup(name, namesz);
3103: n->key.sz = namesz;
3104: n->val.p = NULL;
3105: n->val.sz = 0;
1.164 kristaps 3106: n->next = *r;
3107: *r = n;
1.193 schwarze 3108: } else if (0 == append) {
1.166 kristaps 3109: free(n->val.p);
3110: n->val.p = NULL;
3111: n->val.sz = 0;
1.106 kristaps 3112: }
3113:
3114: if (NULL == string)
3115: return;
3116:
3117: /*
3118: * One additional byte for the '\n' in multiline mode,
3119: * and one for the terminating '\0'.
3120: */
1.193 schwarze 3121: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3122:
1.166 kristaps 3123: if (NULL == n->val.p) {
3124: n->val.p = mandoc_malloc(newch);
3125: *n->val.p = '\0';
1.106 kristaps 3126: oldch = 0;
3127: } else {
1.166 kristaps 3128: oldch = n->val.sz;
3129: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3130: }
3131:
3132: /* Skip existing content in the destination buffer. */
1.166 kristaps 3133: c = n->val.p + (int)oldch;
1.106 kristaps 3134:
3135: /* Append new content to the destination buffer. */
1.164 kristaps 3136: i = 0;
3137: while (i < (int)stringsz) {
1.106 kristaps 3138: /*
3139: * Rudimentary roff copy mode:
3140: * Handle escaped backslashes.
3141: */
1.164 kristaps 3142: if ('\\' == string[i] && '\\' == string[i + 1])
3143: i++;
3144: *c++ = string[i++];
1.106 kristaps 3145: }
1.94 kristaps 3146:
1.106 kristaps 3147: /* Append terminating bytes. */
1.193 schwarze 3148: if (1 < append)
1.106 kristaps 3149: *c++ = '\n';
1.163 kristaps 3150:
1.106 kristaps 3151: *c = '\0';
1.166 kristaps 3152: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3153: }
3154:
1.94 kristaps 3155: static const char *
3156: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.92 schwarze 3157: {
1.166 kristaps 3158: const struct roffkv *n;
1.191 schwarze 3159: int i;
1.92 schwarze 3160:
1.164 kristaps 3161: for (n = r->strtab; n; n = n->next)
1.207 schwarze 3162: if (0 == strncmp(name, n->key.p, len) &&
3163: '\0' == n->key.p[(int)len])
1.277 schwarze 3164: return n->val.p;
1.191 schwarze 3165:
3166: for (i = 0; i < PREDEFS_MAX; i++)
3167: if (0 == strncmp(name, predefs[i].name, len) &&
3168: '\0' == predefs[i].name[(int)len])
1.277 schwarze 3169: return predefs[i].str;
1.94 kristaps 3170:
1.277 schwarze 3171: return NULL;
1.92 schwarze 3172: }
3173:
1.94 kristaps 3174: static void
1.167 kristaps 3175: roff_freestr(struct roffkv *r)
1.92 schwarze 3176: {
1.166 kristaps 3177: struct roffkv *n, *nn;
1.92 schwarze 3178:
1.167 kristaps 3179: for (n = r; n; n = nn) {
1.166 kristaps 3180: free(n->key.p);
3181: free(n->val.p);
1.92 schwarze 3182: nn = n->next;
3183: free(n);
3184: }
1.114 kristaps 3185: }
1.266 schwarze 3186:
3187: /* --- accessors and utility functions ------------------------------------ */
1.114 kristaps 3188:
3189: const struct tbl_span *
3190: roff_span(const struct roff *r)
3191: {
1.207 schwarze 3192:
1.277 schwarze 3193: return r->tbl ? tbl_span(r->tbl) : NULL;
1.125 kristaps 3194: }
3195:
3196: const struct eqn *
3197: roff_eqn(const struct roff *r)
3198: {
1.207 schwarze 3199:
1.277 schwarze 3200: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.164 kristaps 3201: }
3202:
3203: /*
3204: * Duplicate an input string, making the appropriate character
3205: * conversations (as stipulated by `tr') along the way.
3206: * Returns a heap-allocated string with all the replacements made.
3207: */
3208: char *
3209: roff_strdup(const struct roff *r, const char *p)
3210: {
1.166 kristaps 3211: const struct roffkv *cp;
1.164 kristaps 3212: char *res;
3213: const char *pp;
3214: size_t ssz, sz;
3215: enum mandoc_esc esc;
3216:
1.167 kristaps 3217: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3218: return mandoc_strdup(p);
1.164 kristaps 3219: else if ('\0' == *p)
1.277 schwarze 3220: return mandoc_strdup("");
1.164 kristaps 3221:
3222: /*
3223: * Step through each character looking for term matches
3224: * (remember that a `tr' can be invoked with an escape, which is
3225: * a glyph but the escape is multi-character).
3226: * We only do this if the character hash has been initialised
3227: * and the string is >0 length.
3228: */
3229:
3230: res = NULL;
3231: ssz = 0;
3232:
3233: while ('\0' != *p) {
1.289 schwarze 3234: assert((unsigned int)*p < 128);
3235: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3236: sz = r->xtab[(int)*p].sz;
3237: res = mandoc_realloc(res, ssz + sz + 1);
3238: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3239: ssz += sz;
3240: p++;
3241: continue;
3242: } else if ('\\' != *p) {
3243: res = mandoc_realloc(res, ssz + 2);
3244: res[ssz++] = *p++;
3245: continue;
3246: }
3247:
1.164 kristaps 3248: /* Search for term matches. */
1.167 kristaps 3249: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3250: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3251: break;
3252:
3253: if (NULL != cp) {
3254: /*
3255: * A match has been found.
3256: * Append the match to the array and move
3257: * forward by its keysize.
3258: */
1.207 schwarze 3259: res = mandoc_realloc(res,
3260: ssz + cp->val.sz + 1);
1.166 kristaps 3261: memcpy(res + ssz, cp->val.p, cp->val.sz);
3262: ssz += cp->val.sz;
3263: p += (int)cp->key.sz;
1.164 kristaps 3264: continue;
3265: }
3266:
1.167 kristaps 3267: /*
3268: * Handle escapes carefully: we need to copy
3269: * over just the escape itself, or else we might
3270: * do replacements within the escape itself.
3271: * Make sure to pass along the bogus string.
3272: */
3273: pp = p++;
3274: esc = mandoc_escape(&p, NULL, NULL);
3275: if (ESCAPE_ERROR == esc) {
3276: sz = strlen(pp);
1.164 kristaps 3277: res = mandoc_realloc(res, ssz + sz + 1);
3278: memcpy(res + ssz, pp, sz);
1.167 kristaps 3279: break;
1.164 kristaps 3280: }
1.207 schwarze 3281: /*
3282: * We bail out on bad escapes.
1.167 kristaps 3283: * No need to warn: we already did so when
3284: * roff_res() was called.
3285: */
3286: sz = (int)(p - pp);
3287: res = mandoc_realloc(res, ssz + sz + 1);
3288: memcpy(res + ssz, pp, sz);
3289: ssz += sz;
1.164 kristaps 3290: }
3291:
3292: res[(int)ssz] = '\0';
1.277 schwarze 3293: return res;
1.227 schwarze 3294: }
3295:
3296: int
3297: roff_getformat(const struct roff *r)
3298: {
3299:
1.277 schwarze 3300: return r->format;
1.174 kristaps 3301: }
3302:
3303: /*
1.207 schwarze 3304: * Find out whether a line is a macro line or not.
1.174 kristaps 3305: * If it is, adjust the current position and return one; if it isn't,
3306: * return zero and don't change the current position.
3307: * If the control character has been set with `.cc', then let that grain
3308: * precedence.
3309: * This is slighly contrary to groff, where using the non-breaking
3310: * control character when `cc' has been invoked will cause the
3311: * non-breaking macro contents to be printed verbatim.
3312: */
3313: int
3314: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3315: {
3316: int pos;
3317:
3318: pos = *ppos;
3319:
3320: if (0 != r->control && cp[pos] == r->control)
3321: pos++;
3322: else if (0 != r->control)
1.277 schwarze 3323: return 0;
1.174 kristaps 3324: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3325: pos += 2;
3326: else if ('.' == cp[pos] || '\'' == cp[pos])
3327: pos++;
3328: else
1.277 schwarze 3329: return 0;
1.174 kristaps 3330:
3331: while (' ' == cp[pos] || '\t' == cp[pos])
3332: pos++;
3333:
3334: *ppos = pos;
1.277 schwarze 3335: return 1;
1.74 kristaps 3336: }
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