Annotation of mandoc/roff.c, Revision 1.295
1.295 ! schwarze 1: /* $Id: roff.c,v 1.294 2017/04/24 23:06:18 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>
1.295 ! schwarze 25: #include <stddef.h>
! 26: #include <stdint.h>
1.178 schwarze 27: #include <stdio.h>
1.1 kristaps 28: #include <stdlib.h>
1.67 kristaps 29: #include <string.h>
1.1 kristaps 30:
1.67 kristaps 31: #include "mandoc.h"
1.201 schwarze 32: #include "mandoc_aux.h"
1.295 ! schwarze 33: #include "mandoc_ohash.h"
1.265 schwarze 34: #include "roff.h"
1.226 schwarze 35: #include "libmandoc.h"
1.266 schwarze 36: #include "roff_int.h"
1.109 kristaps 37: #include "libroff.h"
1.82 kristaps 38:
1.170 schwarze 39: /* Maximum number of string expansions per line, to break infinite loops. */
40: #define EXPAND_LIMIT 1000
41:
1.266 schwarze 42: /* --- data types --------------------------------------------------------- */
43:
1.147 kristaps 44: /*
1.167 kristaps 45: * An incredibly-simple string buffer.
46: */
1.94 kristaps 47: struct roffstr {
1.167 kristaps 48: char *p; /* nil-terminated buffer */
49: size_t sz; /* saved strlen(p) */
1.166 kristaps 50: };
51:
52: /*
1.167 kristaps 53: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 54: */
55: struct roffkv {
56: struct roffstr key;
57: struct roffstr val;
58: struct roffkv *next; /* next in list */
1.94 kristaps 59: };
60:
1.180 schwarze 61: /*
62: * A single number register as part of a singly-linked list.
63: */
64: struct roffreg {
65: struct roffstr key;
1.181 schwarze 66: int val;
1.180 schwarze 67: struct roffreg *next;
68: };
69:
1.295 ! schwarze 70: /*
! 71: * Association of request and macro names with token IDs.
! 72: */
! 73: struct roffreq {
! 74: enum roff_tok tok;
! 75: char name[];
! 76: };
! 77:
1.67 kristaps 78: struct roff {
1.128 kristaps 79: struct mparse *parse; /* parse point */
1.67 kristaps 80: struct roffnode *last; /* leaf of stack */
1.223 schwarze 81: int *rstack; /* stack of inverted `ie' values */
1.295 ! schwarze 82: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 83: struct roffreg *regtab; /* number registers */
1.166 kristaps 84: struct roffkv *strtab; /* user-defined strings & macros */
1.167 kristaps 85: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
86: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 87: const char *current_string; /* value of last called user macro */
1.118 kristaps 88: struct tbl_node *first_tbl; /* first table parsed */
89: struct tbl_node *last_tbl; /* last table parsed */
90: struct tbl_node *tbl; /* current table being parsed */
1.125 kristaps 91: struct eqn_node *last_eqn; /* last equation parsed */
92: struct eqn_node *first_eqn; /* first equation parsed */
93: struct eqn_node *eqn; /* current equation being parsed */
1.230 schwarze 94: int eqn_inline; /* current equation is inline */
1.223 schwarze 95: int options; /* parse options */
96: int rstacksz; /* current size limit of rstack */
97: int rstackpos; /* position in rstack */
1.227 schwarze 98: int format; /* current file in mdoc or man format */
1.273 schwarze 99: int argc; /* number of args of the last macro */
1.223 schwarze 100: char control; /* control character */
1.79 kristaps 101: };
102:
1.67 kristaps 103: struct roffnode {
1.294 schwarze 104: enum roff_tok tok; /* type of node */
1.67 kristaps 105: struct roffnode *parent; /* up one in stack */
106: int line; /* parse line */
107: int col; /* parse col */
1.106 kristaps 108: char *name; /* node name, e.g. macro name */
1.79 kristaps 109: char *end; /* end-rules: custom token */
110: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 111: int rule; /* current evaluation rule */
1.67 kristaps 112: };
113:
114: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 115: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 116: struct buf *buf, /* input buffer */ \
1.67 kristaps 117: int ln, /* parse line */ \
1.75 kristaps 118: int ppos, /* original pos in buffer */ \
119: int pos, /* current pos in buffer */ \
1.74 kristaps 120: int *offs /* reset offset of buffer data */
1.67 kristaps 121:
122: typedef enum rofferr (*roffproc)(ROFF_ARGS);
123:
124: struct roffmac {
1.79 kristaps 125: roffproc proc; /* process new macro */
126: roffproc text; /* process as child text of macro */
127: roffproc sub; /* process as child of macro */
128: int flags;
129: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 130: };
131:
1.141 kristaps 132: struct predef {
133: const char *name; /* predefined input name */
134: const char *str; /* replacement symbol */
135: };
136:
137: #define PREDEF(__name, __str) \
138: { (__name), (__str) },
139:
1.266 schwarze 140: /* --- function prototypes ------------------------------------------------ */
141:
1.155 kristaps 142: static void roffnode_cleanscope(struct roff *);
143: static void roffnode_pop(struct roff *);
1.294 schwarze 144: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 145: const char *, int, int);
1.80 kristaps 146: static enum rofferr roff_block(ROFF_ARGS);
147: static enum rofferr roff_block_text(ROFF_ARGS);
148: static enum rofferr roff_block_sub(ROFF_ARGS);
1.251 schwarze 149: static enum rofferr roff_brp(ROFF_ARGS);
1.80 kristaps 150: static enum rofferr roff_cblock(ROFF_ARGS);
1.174 kristaps 151: static enum rofferr roff_cc(ROFF_ARGS);
1.195 schwarze 152: static void roff_ccond(struct roff *, int, int);
1.82 kristaps 153: static enum rofferr roff_cond(ROFF_ARGS);
154: static enum rofferr roff_cond_text(ROFF_ARGS);
155: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.92 schwarze 156: static enum rofferr roff_ds(ROFF_ARGS);
1.238 schwarze 157: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 158: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 159: static int roff_evalnum(struct roff *, int,
160: const char *, int *, int *, int);
161: static int roff_evalpar(struct roff *, int,
1.261 schwarze 162: const char *, int *, int *, int);
1.198 schwarze 163: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 164: static void roff_free1(struct roff *);
1.180 schwarze 165: static void roff_freereg(struct roffreg *);
1.167 kristaps 166: static void roff_freestr(struct roffkv *);
1.212 schwarze 167: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 168: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 169: static int roff_getop(const char *, int *, char *);
1.181 schwarze 170: static int roff_getregn(const struct roff *,
171: const char *, size_t);
1.273 schwarze 172: static int roff_getregro(const struct roff *,
173: const char *name);
1.207 schwarze 174: static const char *roff_getstrn(const struct roff *,
1.94 kristaps 175: const char *, size_t);
1.271 schwarze 176: static int roff_hasregn(const struct roff *,
177: const char *, size_t);
1.251 schwarze 178: static enum rofferr roff_insec(ROFF_ARGS);
1.178 schwarze 179: static enum rofferr roff_it(ROFF_ARGS);
1.103 kristaps 180: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.265 schwarze 181: static void roff_man_alloc1(struct roff_man *);
182: static void roff_man_free1(struct roff_man *);
1.89 kristaps 183: static enum rofferr roff_nr(ROFF_ARGS);
1.294 schwarze 184: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 185: int, int);
1.238 schwarze 186: static enum rofferr roff_parsetext(struct buf *, int, int *);
187: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.122 schwarze 188: static enum rofferr roff_rm(ROFF_ARGS);
1.203 schwarze 189: static enum rofferr roff_rr(ROFF_ARGS);
1.94 kristaps 190: static void roff_setstr(struct roff *,
1.106 kristaps 191: const char *, const char *, int);
1.207 schwarze 192: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 193: size_t, const char *, size_t, int);
1.105 kristaps 194: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 195: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 196: static enum rofferr roff_Dd(ROFF_ARGS);
197: static enum rofferr roff_TH(ROFF_ARGS);
1.109 kristaps 198: static enum rofferr roff_TE(ROFF_ARGS);
199: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 200: static enum rofferr roff_EQ(ROFF_ARGS);
201: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 202: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 203: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 204: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 205:
1.266 schwarze 206: /* --- constant data ------------------------------------------------------ */
207:
1.261 schwarze 208: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
209: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
210:
1.294 schwarze 211: const char *__roff_name[MAN_MAX + 1] = {
212: "ab", "ad", "af", "aln",
213: "als", "am", "am1", "ami",
214: "ami1", "as", "as1", "asciify",
215: "backtrace", "bd", "bleedat", "blm",
216: "box", "boxa", "bp", "BP",
217: "break", "breakchar", "brnl", "brp",
218: "brpnl", "c2", "cc", "ce",
219: "cf", "cflags", "ch", "char",
220: "chop", "class", "close", "CL",
221: "color", "composite", "continue", "cp",
222: "cropat", "cs", "cu", "da",
223: "dch", "Dd", "de", "de1",
224: "defcolor", "dei", "dei1", "device",
225: "devicem", "di", "do", "ds",
226: "ds1", "dwh", "dt", "ec",
227: "ecr", "ecs", "el", "em",
228: "EN", "eo", "EP", "EQ",
229: "errprint", "ev", "evc", "ex",
230: "fallback", "fam", "fc", "fchar",
231: "fcolor", "fdeferlig", "feature", "fkern",
232: "fl", "flig", "fp", "fps",
233: "fschar", "fspacewidth", "fspecial", "ftr",
234: "fzoom", "gcolor", "hc", "hcode",
235: "hidechar", "hla", "hlm", "hpf",
236: "hpfa", "hpfcode", "hw", "hy",
237: "hylang", "hylen", "hym", "hypp",
238: "hys", "ie", "if", "ig",
239: "index", "it", "itc", "IX",
240: "kern", "kernafter", "kernbefore", "kernpair",
241: "lc", "lc_ctype", "lds", "length",
242: "letadj", "lf", "lg", "lhang",
243: "linetabs", "lnr", "lnrf", "lpfx",
244: "ls", "lsm", "lt", "mc",
245: "mediasize", "minss", "mk", "mso",
246: "na", "ne", "nh", "nhychar",
247: "nm", "nn", "nop", "nr",
248: "nrf", "nroff", "ns", "nx",
249: "open", "opena", "os", "output",
250: "padj", "papersize", "pc", "pev",
251: "pi", "PI", "pl", "pm",
252: "pn", "pnr", "po", "ps",
253: "psbb", "pshape", "pso", "ptr",
254: "pvs", "rchar", "rd", "recursionlimit",
255: "return", "rfschar", "rhang", "rj",
256: "rm", "rn", "rnn", "rr",
257: "rs", "rt", "schar", "sentchar",
258: "shc", "shift", "sizes", "so",
259: "spacewidth", "special", "spreadwarn", "ss",
260: "sty", "substring", "sv", "sy",
261: "T&", "ta", "tc", "TE",
262: "TH", "ti", "tkf", "tl",
263: "tm", "tm1", "tmc", "tr",
264: "track", "transchar", "trf", "trimat",
265: "trin", "trnt", "troff", "TS",
266: "uf", "ul", "unformat", "unwatch",
267: "unwatchn", "vpt", "vs", "warn",
268: "warnscale", "watch", "watchlength", "watchn",
269: "wh", "while", "write", "writec",
270: "writem", "xflag", ".", NULL,
271: "text",
272: "Dd", "Dt", "Os", "Sh",
273: "Ss", "Pp", "D1", "Dl",
274: "Bd", "Ed", "Bl", "El",
275: "It", "Ad", "An", "Ap",
276: "Ar", "Cd", "Cm", "Dv",
277: "Er", "Ev", "Ex", "Fa",
278: "Fd", "Fl", "Fn", "Ft",
279: "Ic", "In", "Li", "Nd",
280: "Nm", "Op", "Ot", "Pa",
281: "Rv", "St", "Va", "Vt",
282: "Xr", "%A", "%B", "%D",
283: "%I", "%J", "%N", "%O",
284: "%P", "%R", "%T", "%V",
285: "Ac", "Ao", "Aq", "At",
286: "Bc", "Bf", "Bo", "Bq",
287: "Bsx", "Bx", "Db", "Dc",
288: "Do", "Dq", "Ec", "Ef",
289: "Em", "Eo", "Fx", "Ms",
290: "No", "Ns", "Nx", "Ox",
291: "Pc", "Pf", "Po", "Pq",
292: "Qc", "Ql", "Qo", "Qq",
293: "Re", "Rs", "Sc", "So",
294: "Sq", "Sm", "Sx", "Sy",
295: "Tn", "Ux", "Xc", "Xo",
296: "Fo", "Fc", "Oo", "Oc",
297: "Bk", "Ek", "Bt", "Hf",
298: "Fr", "Ud", "Lb", "Lp",
299: "Lk", "Mt", "Brq", "Bro",
300: "Brc", "%C", "Es", "En",
301: "Dx", "%Q", "br", "sp",
302: "%U", "Ta", "ll", NULL,
303: "TH", "SH", "SS", "TP",
304: "LP", "PP", "P", "IP",
305: "HP", "SM", "SB", "BI",
306: "IB", "BR", "RB", "R",
307: "B", "I", "IR", "RI",
308: "br", "sp", "nf", "fi",
309: "RE", "RS", "DT", "UC",
310: "PD", "AT", "in", "ft",
311: "OP", "EX", "EE", "UR",
312: "UE", "ll", NULL
313: };
314: const char *const *roff_name = __roff_name;
315:
316: static struct roffmac roffs[TOKEN_NONE] = {
1.295 ! schwarze 317: { roff_unsupp, NULL, NULL, 0 }, /* ab */
! 318: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
! 319: { roff_line_ignore, NULL, NULL, 0 }, /* af */
! 320: { roff_unsupp, NULL, NULL, 0 }, /* aln */
! 321: { roff_unsupp, NULL, NULL, 0 }, /* als */
! 322: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
! 323: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
! 324: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
! 325: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
! 326: { roff_ds, NULL, NULL, 0 }, /* as */
! 327: { roff_ds, NULL, NULL, 0 }, /* as1 */
! 328: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
! 329: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
! 330: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
! 331: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
! 332: { roff_unsupp, NULL, NULL, 0 }, /* blm */
! 333: { roff_unsupp, NULL, NULL, 0 }, /* box */
! 334: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
! 335: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
! 336: { roff_unsupp, NULL, NULL, 0 }, /* BP */
! 337: { roff_unsupp, NULL, NULL, 0 }, /* break */
! 338: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
! 339: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
! 340: { roff_brp, NULL, NULL, 0 }, /* brp */
! 341: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
! 342: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
! 343: { roff_cc, NULL, NULL, 0 }, /* cc */
! 344: { roff_line_ignore, NULL, NULL, 0 }, /* ce */
! 345: { roff_insec, NULL, NULL, 0 }, /* cf */
! 346: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
! 347: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
! 348: { roff_unsupp, NULL, NULL, 0 }, /* char */
! 349: { roff_unsupp, NULL, NULL, 0 }, /* chop */
! 350: { roff_line_ignore, NULL, NULL, 0 }, /* class */
! 351: { roff_insec, NULL, NULL, 0 }, /* close */
! 352: { roff_unsupp, NULL, NULL, 0 }, /* CL */
! 353: { roff_line_ignore, NULL, NULL, 0 }, /* color */
! 354: { roff_unsupp, NULL, NULL, 0 }, /* composite */
! 355: { roff_unsupp, NULL, NULL, 0 }, /* continue */
! 356: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
! 357: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
! 358: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
! 359: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
! 360: { roff_unsupp, NULL, NULL, 0 }, /* da */
! 361: { roff_unsupp, NULL, NULL, 0 }, /* dch */
! 362: { roff_Dd, NULL, NULL, 0 }, /* Dd */
! 363: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
! 364: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
! 365: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
! 366: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
! 367: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
! 368: { roff_unsupp, NULL, NULL, 0 }, /* device */
! 369: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
! 370: { roff_unsupp, NULL, NULL, 0 }, /* di */
! 371: { roff_unsupp, NULL, NULL, 0 }, /* do */
! 372: { roff_ds, NULL, NULL, 0 }, /* ds */
! 373: { roff_ds, NULL, NULL, 0 }, /* ds1 */
! 374: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
! 375: { roff_unsupp, NULL, NULL, 0 }, /* dt */
! 376: { roff_unsupp, NULL, NULL, 0 }, /* ec */
! 377: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
! 378: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
! 379: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
! 380: { roff_unsupp, NULL, NULL, 0 }, /* em */
! 381: { roff_EN, NULL, NULL, 0 }, /* EN */
! 382: { roff_unsupp, NULL, NULL, 0 }, /* eo */
! 383: { roff_unsupp, NULL, NULL, 0 }, /* EP */
! 384: { roff_EQ, NULL, NULL, 0 }, /* EQ */
! 385: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
! 386: { roff_unsupp, NULL, NULL, 0 }, /* ev */
! 387: { roff_unsupp, NULL, NULL, 0 }, /* evc */
! 388: { roff_unsupp, NULL, NULL, 0 }, /* ex */
! 389: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
! 390: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
! 391: { roff_unsupp, NULL, NULL, 0 }, /* fc */
! 392: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
! 393: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
! 394: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
! 395: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
! 396: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
! 397: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
! 398: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
! 399: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
! 400: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
! 401: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
! 402: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
! 403: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
! 404: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
! 405: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
! 406: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
! 407: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
! 408: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
! 409: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
! 410: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
! 411: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
! 412: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
! 413: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
! 414: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
! 415: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
! 416: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
! 417: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
! 418: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
! 419: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
! 420: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
! 421: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
! 422: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
! 423: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
! 424: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
! 425: { roff_unsupp, NULL, NULL, 0 }, /* index */
! 426: { roff_it, NULL, NULL, 0 }, /* it */
! 427: { roff_unsupp, NULL, NULL, 0 }, /* itc */
! 428: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
! 429: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
! 430: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
! 431: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
! 432: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
! 433: { roff_unsupp, NULL, NULL, 0 }, /* lc */
! 434: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
! 435: { roff_unsupp, NULL, NULL, 0 }, /* lds */
! 436: { roff_unsupp, NULL, NULL, 0 }, /* length */
! 437: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
! 438: { roff_insec, NULL, NULL, 0 }, /* lf */
! 439: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
! 440: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
! 441: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
! 442: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
! 443: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
! 444: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
! 445: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
! 446: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
! 447: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
! 448: { roff_line_ignore, NULL, NULL, 0 }, /* mc */
! 449: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
! 450: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
! 451: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
! 452: { roff_insec, NULL, NULL, 0 }, /* mso */
! 453: { roff_line_ignore, NULL, NULL, 0 }, /* na */
! 454: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
! 455: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
! 456: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
! 457: { roff_unsupp, NULL, NULL, 0 }, /* nm */
! 458: { roff_unsupp, NULL, NULL, 0 }, /* nn */
! 459: { roff_unsupp, NULL, NULL, 0 }, /* nop */
! 460: { roff_nr, NULL, NULL, 0 }, /* nr */
! 461: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
! 462: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
! 463: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
! 464: { roff_insec, NULL, NULL, 0 }, /* nx */
! 465: { roff_insec, NULL, NULL, 0 }, /* open */
! 466: { roff_insec, NULL, NULL, 0 }, /* opena */
! 467: { roff_line_ignore, NULL, NULL, 0 }, /* os */
! 468: { roff_unsupp, NULL, NULL, 0 }, /* output */
! 469: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
! 470: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
! 471: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
! 472: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
! 473: { roff_insec, NULL, NULL, 0 }, /* pi */
! 474: { roff_unsupp, NULL, NULL, 0 }, /* PI */
! 475: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
! 476: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
! 477: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
! 478: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
! 479: { roff_line_ignore, NULL, NULL, 0 }, /* po */
! 480: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
! 481: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
! 482: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
! 483: { roff_insec, NULL, NULL, 0 }, /* pso */
! 484: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
! 485: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
! 486: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
! 487: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
! 488: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
! 489: { roff_unsupp, NULL, NULL, 0 }, /* return */
! 490: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
! 491: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
! 492: { roff_line_ignore, NULL, NULL, 0 }, /* rj */
! 493: { roff_rm, NULL, NULL, 0 }, /* rm */
! 494: { roff_unsupp, NULL, NULL, 0 }, /* rn */
! 495: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
! 496: { roff_rr, NULL, NULL, 0 }, /* rr */
! 497: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
! 498: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
! 499: { roff_unsupp, NULL, NULL, 0 }, /* schar */
! 500: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
! 501: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
! 502: { roff_unsupp, NULL, NULL, 0 }, /* shift */
! 503: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
! 504: { roff_so, NULL, NULL, 0 }, /* so */
! 505: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
! 506: { roff_line_ignore, NULL, NULL, 0 }, /* special */
! 507: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
! 508: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
! 509: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
! 510: { roff_unsupp, NULL, NULL, 0 }, /* substring */
! 511: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
! 512: { roff_insec, NULL, NULL, 0 }, /* sy */
! 513: { roff_T_, NULL, NULL, 0 }, /* T& */
! 514: { roff_unsupp, NULL, NULL, 0 }, /* ta */
! 515: { roff_unsupp, NULL, NULL, 0 }, /* tc */
! 516: { roff_TE, NULL, NULL, 0 }, /* TE */
! 517: { roff_TH, NULL, NULL, 0 }, /* TH */
! 518: { roff_unsupp, NULL, NULL, 0 }, /* ti */
! 519: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
! 520: { roff_unsupp, NULL, NULL, 0 }, /* tl */
! 521: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
! 522: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
! 523: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
! 524: { roff_tr, NULL, NULL, 0 }, /* tr */
! 525: { roff_line_ignore, NULL, NULL, 0 }, /* track */
! 526: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
! 527: { roff_insec, NULL, NULL, 0 }, /* trf */
! 528: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
! 529: { roff_unsupp, NULL, NULL, 0 }, /* trin */
! 530: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
! 531: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
! 532: { roff_TS, NULL, NULL, 0 }, /* TS */
! 533: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
! 534: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
! 535: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
! 536: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
! 537: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
! 538: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
! 539: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
! 540: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
! 541: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
! 542: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
! 543: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
! 544: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
! 545: { roff_unsupp, NULL, NULL, 0 }, /* wh */
! 546: { roff_unsupp, NULL, NULL, 0 }, /* while */
! 547: { roff_insec, NULL, NULL, 0 }, /* write */
! 548: { roff_insec, NULL, NULL, 0 }, /* writec */
! 549: { roff_insec, NULL, NULL, 0 }, /* writem */
! 550: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
! 551: { roff_cblock, NULL, NULL, 0 }, /* . */
! 552: { roff_userdef, NULL, NULL, 0 }
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:
1.178 schwarze 594: static int roffit_lines; /* number of lines to delay */
595: static char *roffit_macro; /* nil-terminated macro line */
596:
1.207 schwarze 597:
1.266 schwarze 598: /* --- request table ------------------------------------------------------ */
599:
1.295 ! schwarze 600: struct ohash *
! 601: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 602: {
1.295 ! schwarze 603: struct ohash *htab;
! 604: struct roffreq *req;
! 605: enum roff_tok tok;
! 606: size_t sz;
! 607: unsigned int slot;
1.85 kristaps 608:
1.295 ! schwarze 609: htab = mandoc_malloc(sizeof(*htab));
! 610: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 611:
1.295 ! schwarze 612: for (tok = mintok; tok < maxtok; tok++) {
! 613: sz = strlen(roff_name[tok]);
! 614: req = mandoc_malloc(sizeof(*req) + sz + 1);
! 615: req->tok = tok;
! 616: memcpy(req->name, roff_name[tok], sz + 1);
! 617: slot = ohash_qlookup(htab, req->name);
! 618: ohash_insert(htab, slot, req);
1.85 kristaps 619: }
1.295 ! schwarze 620: return htab;
1.85 kristaps 621: }
622:
1.295 ! schwarze 623: void
! 624: roffhash_free(struct ohash *htab)
1.67 kristaps 625: {
1.295 ! schwarze 626: struct roffreq *req;
! 627: unsigned int slot;
1.67 kristaps 628:
1.295 ! schwarze 629: if (htab == NULL)
! 630: return;
! 631: for (req = ohash_first(htab, &slot); req != NULL;
! 632: req = ohash_next(htab, &slot))
! 633: free(req);
! 634: ohash_delete(htab);
! 635: free(htab);
! 636: }
! 637:
! 638: enum roff_tok
! 639: roffhash_find(struct ohash *htab, const char *name, size_t sz)
! 640: {
! 641: struct roffreq *req;
! 642: const char *end;
! 643:
! 644: if (sz) {
! 645: end = name + sz;
! 646: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
! 647: } else
! 648: req = ohash_find(htab, ohash_qlookup(htab, name));
! 649: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 650: }
651:
1.266 schwarze 652: /* --- stack of request blocks -------------------------------------------- */
653:
1.67 kristaps 654: /*
655: * Pop the current node off of the stack of roff instructions currently
656: * pending.
657: */
658: static void
659: roffnode_pop(struct roff *r)
660: {
661: struct roffnode *p;
662:
1.75 kristaps 663: assert(r->last);
1.207 schwarze 664: p = r->last;
1.82 kristaps 665:
1.75 kristaps 666: r->last = r->last->parent;
1.106 kristaps 667: free(p->name);
668: free(p->end);
1.67 kristaps 669: free(p);
670: }
671:
672: /*
673: * Push a roff node onto the instruction stack. This must later be
674: * removed with roffnode_pop().
675: */
1.98 schwarze 676: static void
1.294 schwarze 677: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 678: int line, int col)
1.67 kristaps 679: {
680: struct roffnode *p;
681:
1.98 schwarze 682: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 683: p->tok = tok;
1.106 kristaps 684: if (name)
685: p->name = mandoc_strdup(name);
1.67 kristaps 686: p->parent = r->last;
687: p->line = line;
688: p->col = col;
1.198 schwarze 689: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 690:
691: r->last = p;
692: }
693:
1.266 schwarze 694: /* --- roff parser state data management ---------------------------------- */
695:
1.67 kristaps 696: static void
697: roff_free1(struct roff *r)
698: {
1.176 schwarze 699: struct tbl_node *tbl;
1.125 kristaps 700: struct eqn_node *e;
1.167 kristaps 701: int i;
1.67 kristaps 702:
1.176 schwarze 703: while (NULL != (tbl = r->first_tbl)) {
704: r->first_tbl = tbl->next;
705: tbl_free(tbl);
1.109 kristaps 706: }
1.113 kristaps 707: r->first_tbl = r->last_tbl = r->tbl = NULL;
708:
1.125 kristaps 709: while (NULL != (e = r->first_eqn)) {
710: r->first_eqn = e->next;
711: eqn_free(e);
712: }
713: r->first_eqn = r->last_eqn = r->eqn = NULL;
714:
1.67 kristaps 715: while (r->last)
716: roffnode_pop(r);
1.109 kristaps 717:
1.223 schwarze 718: free (r->rstack);
719: r->rstack = NULL;
720: r->rstacksz = 0;
721: r->rstackpos = -1;
722:
723: roff_freereg(r->regtab);
724: r->regtab = NULL;
725:
1.167 kristaps 726: roff_freestr(r->strtab);
727: roff_freestr(r->xmbtab);
728: r->strtab = r->xmbtab = NULL;
729:
730: if (r->xtab)
731: for (i = 0; i < 128; i++)
732: free(r->xtab[i].p);
733: free(r->xtab);
734: r->xtab = NULL;
1.67 kristaps 735: }
736:
737: void
738: roff_reset(struct roff *r)
739: {
740: roff_free1(r);
1.227 schwarze 741: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.174 kristaps 742: r->control = 0;
1.67 kristaps 743: }
744:
745: void
746: roff_free(struct roff *r)
747: {
748: roff_free1(r);
1.295 ! schwarze 749: roffhash_free(r->reqtab);
1.67 kristaps 750: free(r);
751: }
752:
753: struct roff *
1.279 schwarze 754: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 755: {
756: struct roff *r;
757:
1.98 schwarze 758: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 759: r->parse = parse;
1.295 ! schwarze 760: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.199 schwarze 761: r->options = options;
1.227 schwarze 762: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 763: r->rstackpos = -1;
1.277 schwarze 764: return r;
1.265 schwarze 765: }
766:
1.266 schwarze 767: /* --- syntax tree state data management ---------------------------------- */
768:
1.265 schwarze 769: static void
770: roff_man_free1(struct roff_man *man)
771: {
772:
1.266 schwarze 773: if (man->first != NULL)
774: roff_node_delete(man, man->first);
1.265 schwarze 775: free(man->meta.msec);
776: free(man->meta.vol);
777: free(man->meta.os);
778: free(man->meta.arch);
779: free(man->meta.title);
780: free(man->meta.name);
781: free(man->meta.date);
782: }
783:
784: static void
785: roff_man_alloc1(struct roff_man *man)
786: {
787:
788: memset(&man->meta, 0, sizeof(man->meta));
789: man->first = mandoc_calloc(1, sizeof(*man->first));
790: man->first->type = ROFFT_ROOT;
791: man->last = man->first;
792: man->last_es = NULL;
793: man->flags = 0;
794: man->macroset = MACROSET_NONE;
795: man->lastsec = man->lastnamed = SEC_NONE;
796: man->next = ROFF_NEXT_CHILD;
797: }
798:
799: void
800: roff_man_reset(struct roff_man *man)
801: {
802:
803: roff_man_free1(man);
804: roff_man_alloc1(man);
805: }
806:
807: void
808: roff_man_free(struct roff_man *man)
809: {
810:
811: roff_man_free1(man);
812: free(man);
813: }
814:
815: struct roff_man *
816: roff_man_alloc(struct roff *roff, struct mparse *parse,
817: const char *defos, int quick)
818: {
819: struct roff_man *man;
820:
821: man = mandoc_calloc(1, sizeof(*man));
822: man->parse = parse;
823: man->roff = roff;
824: man->defos = defos;
825: man->quick = quick;
826: roff_man_alloc1(man);
1.277 schwarze 827: return man;
1.67 kristaps 828: }
829:
1.266 schwarze 830: /* --- syntax tree handling ----------------------------------------------- */
831:
832: struct roff_node *
833: roff_node_alloc(struct roff_man *man, int line, int pos,
834: enum roff_type type, int tok)
835: {
836: struct roff_node *n;
837:
838: n = mandoc_calloc(1, sizeof(*n));
839: n->line = line;
840: n->pos = pos;
841: n->tok = tok;
842: n->type = type;
843: n->sec = man->lastsec;
844:
845: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 846: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 847: else
1.285 schwarze 848: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 849: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 850: n->flags |= NODE_LINE;
1.266 schwarze 851: man->flags &= ~MDOC_NEWLINE;
852:
1.277 schwarze 853: return n;
1.266 schwarze 854: }
855:
856: void
857: roff_node_append(struct roff_man *man, struct roff_node *n)
858: {
859:
860: switch (man->next) {
861: case ROFF_NEXT_SIBLING:
1.281 schwarze 862: if (man->last->next != NULL) {
863: n->next = man->last->next;
864: man->last->next->prev = n;
865: } else
866: man->last->parent->last = n;
1.266 schwarze 867: man->last->next = n;
868: n->prev = man->last;
869: n->parent = man->last->parent;
870: break;
871: case ROFF_NEXT_CHILD:
1.287 schwarze 872: if (man->last->child != NULL) {
873: n->next = man->last->child;
874: man->last->child->prev = n;
875: } else
876: man->last->last = n;
1.266 schwarze 877: man->last->child = n;
878: n->parent = man->last;
879: break;
880: default:
881: abort();
882: }
1.282 schwarze 883: man->last = n;
1.266 schwarze 884:
885: switch (n->type) {
886: case ROFFT_HEAD:
887: n->parent->head = n;
888: break;
889: case ROFFT_BODY:
1.282 schwarze 890: if (n->end != ENDBODY_NOT)
891: return;
1.266 schwarze 892: n->parent->body = n;
893: break;
894: case ROFFT_TAIL:
895: n->parent->tail = n;
896: break;
897: default:
1.282 schwarze 898: return;
1.266 schwarze 899: }
1.282 schwarze 900:
901: /*
902: * Copy over the normalised-data pointer of our parent. Not
903: * everybody has one, but copying a null pointer is fine.
904: */
905:
906: n->norm = n->parent->norm;
907: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 908: }
909:
1.267 schwarze 910: void
911: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
912: {
913: struct roff_node *n;
914:
915: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
916: n->string = roff_strdup(man->roff, word);
917: roff_node_append(man, n);
1.286 schwarze 918: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 919: man->next = ROFF_NEXT_SIBLING;
920: }
921:
922: void
923: roff_word_append(struct roff_man *man, const char *word)
924: {
925: struct roff_node *n;
926: char *addstr, *newstr;
927:
928: n = man->last;
929: addstr = roff_strdup(man->roff, word);
930: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
931: free(addstr);
932: free(n->string);
933: n->string = newstr;
934: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 935: }
936:
937: void
938: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
939: {
940: struct roff_node *n;
941:
942: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
943: roff_node_append(man, n);
944: man->next = ROFF_NEXT_CHILD;
945: }
946:
947: struct roff_node *
948: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
949: {
950: struct roff_node *n;
951:
952: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
953: roff_node_append(man, n);
954: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 955: return n;
1.267 schwarze 956: }
957:
1.266 schwarze 958: struct roff_node *
959: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
960: {
961: struct roff_node *n;
962:
963: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
964: roff_node_append(man, n);
965: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 966: return n;
1.266 schwarze 967: }
968:
969: struct roff_node *
970: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
971: {
972: struct roff_node *n;
973:
974: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
975: roff_node_append(man, n);
976: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 977: return n;
1.267 schwarze 978: }
979:
980: void
981: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
982: {
983: struct roff_node *n;
984:
985: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
986: n->eqn = eqn;
987: if (eqn->ln > man->last->line)
1.285 schwarze 988: n->flags |= NODE_LINE;
1.267 schwarze 989: roff_node_append(man, n);
990: man->next = ROFF_NEXT_SIBLING;
991: }
992:
993: void
994: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
995: {
996: struct roff_node *n;
997:
998: if (man->macroset == MACROSET_MAN)
999: man_breakscope(man, TOKEN_NONE);
1000: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1001: n->span = tbl;
1002: roff_node_append(man, n);
1.286 schwarze 1003: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 1004: man->next = ROFF_NEXT_SIBLING;
1.266 schwarze 1005: }
1006:
1007: void
1008: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1009: {
1010:
1011: /* Adjust siblings. */
1012:
1013: if (n->prev)
1014: n->prev->next = n->next;
1015: if (n->next)
1016: n->next->prev = n->prev;
1017:
1018: /* Adjust parent. */
1019:
1020: if (n->parent != NULL) {
1021: if (n->parent->child == n)
1022: n->parent->child = n->next;
1023: if (n->parent->last == n)
1024: n->parent->last = n->prev;
1025: }
1026:
1027: /* Adjust parse point. */
1028:
1029: if (man == NULL)
1030: return;
1031: if (man->last == n) {
1032: if (n->prev == NULL) {
1033: man->last = n->parent;
1034: man->next = ROFF_NEXT_CHILD;
1035: } else {
1036: man->last = n->prev;
1037: man->next = ROFF_NEXT_SIBLING;
1038: }
1039: }
1040: if (man->first == n)
1041: man->first = NULL;
1042: }
1043:
1044: void
1045: roff_node_free(struct roff_node *n)
1046: {
1047:
1048: if (n->args != NULL)
1049: mdoc_argv_free(n->args);
1050: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1051: free(n->norm);
1052: free(n->string);
1053: free(n);
1054: }
1055:
1056: void
1057: roff_node_delete(struct roff_man *man, struct roff_node *n)
1058: {
1059:
1060: while (n->child != NULL)
1061: roff_node_delete(man, n->child);
1062: roff_node_unlink(man, n);
1063: roff_node_free(n);
1.269 schwarze 1064: }
1065:
1066: void
1067: deroff(char **dest, const struct roff_node *n)
1068: {
1069: char *cp;
1070: size_t sz;
1071:
1072: if (n->type != ROFFT_TEXT) {
1073: for (n = n->child; n != NULL; n = n->next)
1074: deroff(dest, n);
1075: return;
1076: }
1077:
1.288 schwarze 1078: /* Skip leading whitespace. */
1.269 schwarze 1079:
1.288 schwarze 1080: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1081: if (cp[0] == '\\' && cp[1] != '\0' &&
1082: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1083: cp++;
1.288 schwarze 1084: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1085: break;
1086: }
1087:
1.289 schwarze 1088: /* Skip trailing backslash. */
1089:
1090: sz = strlen(cp);
1.290 schwarze 1091: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1092: sz--;
1093:
1.269 schwarze 1094: /* Skip trailing whitespace. */
1095:
1.289 schwarze 1096: for (; sz; sz--)
1.269 schwarze 1097: if ( ! isspace((unsigned char)cp[sz-1]))
1098: break;
1099:
1100: /* Skip empty strings. */
1101:
1102: if (sz == 0)
1103: return;
1104:
1105: if (*dest == NULL) {
1106: *dest = mandoc_strndup(cp, sz);
1107: return;
1108: }
1109:
1110: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1111: free(*dest);
1112: *dest = cp;
1.266 schwarze 1113: }
1114:
1115: /* --- main functions of the roff parser ---------------------------------- */
1116:
1.94 kristaps 1117: /*
1.206 schwarze 1118: * In the current line, expand escape sequences that tend to get
1119: * used in numerical expressions and conditional requests.
1120: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1121: */
1.172 schwarze 1122: static enum rofferr
1.238 schwarze 1123: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1124: {
1.208 schwarze 1125: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1126: const char *start; /* start of the string to process */
1.209 schwarze 1127: char *stesc; /* start of an escape sequence ('\\') */
1.108 schwarze 1128: const char *stnam; /* start of the name, after "[(*" */
1129: const char *cp; /* end of the name, e.g. before ']' */
1130: const char *res; /* the string to be substituted */
1.238 schwarze 1131: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1132: size_t maxl; /* expected length of the escape name */
1133: size_t naml; /* actual length of the escape name */
1.237 schwarze 1134: enum mandoc_esc esc; /* type of the escape sequence */
1135: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1136: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1137: int npos; /* position in numeric expression */
1.218 schwarze 1138: int arg_complete; /* argument not interrupted by eol */
1.206 schwarze 1139: char term; /* character terminating the escape */
1.94 kristaps 1140:
1.170 schwarze 1141: expand_count = 0;
1.238 schwarze 1142: start = buf->buf + pos;
1.205 schwarze 1143: stesc = strchr(start, '\0') - 1;
1144: while (stesc-- > start) {
1.170 schwarze 1145:
1.205 schwarze 1146: /* Search backwards for the next backslash. */
1147:
1.238 schwarze 1148: if (*stesc != '\\')
1.205 schwarze 1149: continue;
1150:
1151: /* If it is escaped, skip it. */
1152:
1153: for (cp = stesc - 1; cp >= start; cp--)
1.238 schwarze 1154: if (*cp != '\\')
1.205 schwarze 1155: break;
1156:
1.238 schwarze 1157: if ((stesc - cp) % 2 == 0) {
1.209 schwarze 1158: stesc = (char *)cp;
1.205 schwarze 1159: continue;
1160: }
1.108 schwarze 1161:
1.206 schwarze 1162: /* Decide whether to expand or to check only. */
1.108 schwarze 1163:
1.206 schwarze 1164: term = '\0';
1.205 schwarze 1165: cp = stesc + 1;
1.181 schwarze 1166: switch (*cp) {
1.207 schwarze 1167: case '*':
1.181 schwarze 1168: res = NULL;
1169: break;
1.207 schwarze 1170: case 'B':
1171: case 'w':
1.206 schwarze 1172: term = cp[1];
1173: /* FALLTHROUGH */
1.207 schwarze 1174: case 'n':
1.181 schwarze 1175: res = ubuf;
1176: break;
1177: default:
1.237 schwarze 1178: esc = mandoc_escape(&cp, &stnam, &inaml);
1179: if (esc == ESCAPE_ERROR ||
1180: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1181: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1182: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1183: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1184: "%.*s", (int)(cp - stesc), stesc);
1.205 schwarze 1185: continue;
1.152 kristaps 1186: }
1187:
1.205 schwarze 1188: if (EXPAND_LIMIT < ++expand_count) {
1189: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1190: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1191: return ROFF_IGN;
1.205 schwarze 1192: }
1.108 schwarze 1193:
1194: /*
1195: * The third character decides the length
1.181 schwarze 1196: * of the name of the string or register.
1.108 schwarze 1197: * Save a pointer to the name.
1198: */
1199:
1.238 schwarze 1200: if (term == '\0') {
1.206 schwarze 1201: switch (*++cp) {
1.207 schwarze 1202: case '\0':
1.206 schwarze 1203: maxl = 0;
1204: break;
1.207 schwarze 1205: case '(':
1.206 schwarze 1206: cp++;
1207: maxl = 2;
1208: break;
1.207 schwarze 1209: case '[':
1.206 schwarze 1210: cp++;
1211: term = ']';
1212: maxl = 0;
1213: break;
1214: default:
1215: maxl = 1;
1216: break;
1217: }
1218: } else {
1219: cp += 2;
1.94 kristaps 1220: maxl = 0;
1221: }
1.108 schwarze 1222: stnam = cp;
1.94 kristaps 1223:
1.108 schwarze 1224: /* Advance to the end of the name. */
1.94 kristaps 1225:
1.253 schwarze 1226: naml = 0;
1.218 schwarze 1227: arg_complete = 1;
1.253 schwarze 1228: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1229: if (*cp == '\0') {
1.219 schwarze 1230: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1231: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1232: arg_complete = 0;
1.206 schwarze 1233: break;
1.153 kristaps 1234: }
1.238 schwarze 1235: if (maxl == 0 && *cp == term) {
1.206 schwarze 1236: cp++;
1.253 schwarze 1237: break;
1238: }
1239: if (*cp++ != '\\' || stesc[1] != 'w') {
1240: naml++;
1241: continue;
1242: }
1243: switch (mandoc_escape(&cp, NULL, NULL)) {
1244: case ESCAPE_SPECIAL:
1245: case ESCAPE_UNICODE:
1246: case ESCAPE_NUMBERED:
1247: case ESCAPE_OVERSTRIKE:
1248: naml++;
1249: break;
1250: default:
1.94 kristaps 1251: break;
1.206 schwarze 1252: }
1.94 kristaps 1253: }
1254:
1.108 schwarze 1255: /*
1256: * Retrieve the replacement string; if it is
1257: * undefined, resume searching for escapes.
1258: */
1259:
1.206 schwarze 1260: switch (stesc[1]) {
1.207 schwarze 1261: case '*':
1.218 schwarze 1262: if (arg_complete)
1263: res = roff_getstrn(r, stnam, naml);
1.206 schwarze 1264: break;
1.207 schwarze 1265: case 'B':
1.206 schwarze 1266: npos = 0;
1.218 schwarze 1267: ubuf[0] = arg_complete &&
1.261 schwarze 1268: roff_evalnum(r, ln, stnam, &npos,
1269: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1270: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1271: ubuf[1] = '\0';
1272: break;
1.207 schwarze 1273: case 'n':
1.218 schwarze 1274: if (arg_complete)
1275: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1276: roff_getregn(r, stnam, naml));
1277: else
1278: ubuf[0] = '\0';
1.206 schwarze 1279: break;
1.207 schwarze 1280: case 'w':
1.218 schwarze 1281: /* use even incomplete args */
1.208 schwarze 1282: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1283: 24 * (int)naml);
1284: break;
1285: }
1.94 kristaps 1286:
1.238 schwarze 1287: if (res == NULL) {
1.219 schwarze 1288: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1289: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1290: "%.*s", (int)naml, stnam);
1.142 kristaps 1291: res = "";
1.246 schwarze 1292: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1293: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1294: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1295: return ROFF_IGN;
1.94 kristaps 1296: }
1297:
1.108 schwarze 1298: /* Replace the escape sequence by the string. */
1299:
1.209 schwarze 1300: *stesc = '\0';
1.238 schwarze 1301: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1302: buf->buf, res, cp) + 1;
1.94 kristaps 1303:
1.205 schwarze 1304: /* Prepare for the next replacement. */
1.94 kristaps 1305:
1.205 schwarze 1306: start = nbuf + pos;
1.238 schwarze 1307: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1308: free(buf->buf);
1309: buf->buf = nbuf;
1.154 kristaps 1310: }
1.277 schwarze 1311: return ROFF_CONT;
1.154 kristaps 1312: }
1313:
1314: /*
1.275 schwarze 1315: * Process text streams.
1.154 kristaps 1316: */
1317: static enum rofferr
1.238 schwarze 1318: roff_parsetext(struct buf *buf, int pos, int *offs)
1.154 kristaps 1319: {
1320: size_t sz;
1321: const char *start;
1.178 schwarze 1322: char *p;
1323: int isz;
1.154 kristaps 1324: enum mandoc_esc esc;
1325:
1.275 schwarze 1326: /* Spring the input line trap. */
1327:
1328: if (roffit_lines == 1) {
1329: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1330: free(buf->buf);
1331: buf->buf = p;
1332: buf->sz = isz + 1;
1333: *offs = 0;
1334: free(roffit_macro);
1335: roffit_lines = 0;
1.277 schwarze 1336: return ROFF_REPARSE;
1.275 schwarze 1337: } else if (roffit_lines > 1)
1338: --roffit_lines;
1339:
1340: /* Convert all breakable hyphens into ASCII_HYPH. */
1341:
1.238 schwarze 1342: start = p = buf->buf + pos;
1.154 kristaps 1343:
1.238 schwarze 1344: while (*p != '\0') {
1.154 kristaps 1345: sz = strcspn(p, "-\\");
1346: p += sz;
1347:
1.238 schwarze 1348: if (*p == '\0')
1.159 kristaps 1349: break;
1350:
1.238 schwarze 1351: if (*p == '\\') {
1.154 kristaps 1352: /* Skip over escapes. */
1353: p++;
1.189 schwarze 1354: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1355: if (esc == ESCAPE_ERROR)
1.154 kristaps 1356: break;
1.264 schwarze 1357: while (*p == '-')
1358: p++;
1.155 kristaps 1359: continue;
1.159 kristaps 1360: } else if (p == start) {
1.158 kristaps 1361: p++;
1.155 kristaps 1362: continue;
1.158 kristaps 1363: }
1.155 kristaps 1364:
1.171 schwarze 1365: if (isalpha((unsigned char)p[-1]) &&
1366: isalpha((unsigned char)p[1]))
1.155 kristaps 1367: *p = ASCII_HYPH;
1368: p++;
1.94 kristaps 1369: }
1.277 schwarze 1370: return ROFF_CONT;
1.94 kristaps 1371: }
1372:
1.67 kristaps 1373: enum rofferr
1.238 schwarze 1374: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1375: {
1.294 schwarze 1376: enum roff_tok t;
1.109 kristaps 1377: enum rofferr e;
1.238 schwarze 1378: int pos; /* parse point */
1.243 schwarze 1379: int spos; /* saved parse point for messages */
1.238 schwarze 1380: int ppos; /* original offset in buf->buf */
1381: int ctl; /* macro line (boolean) */
1382:
1383: ppos = pos = *offs;
1.79 kristaps 1384:
1.230 schwarze 1385: /* Handle in-line equation delimiters. */
1386:
1.236 schwarze 1387: if (r->tbl == NULL &&
1388: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1389: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1390: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1391: if (e == ROFF_REPARSE)
1.277 schwarze 1392: return e;
1.230 schwarze 1393: assert(e == ROFF_CONT);
1394: }
1395:
1396: /* Expand some escape sequences. */
1.94 kristaps 1397:
1.238 schwarze 1398: e = roff_res(r, buf, ln, pos);
1399: if (e == ROFF_IGN)
1.277 schwarze 1400: return e;
1.238 schwarze 1401: assert(e == ROFF_CONT);
1.94 kristaps 1402:
1.238 schwarze 1403: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1404:
1.94 kristaps 1405: /*
1.79 kristaps 1406: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1407: * text through the macro's filter.
1408: * Equations process all content themselves.
1409: * Tables process almost all content themselves, but we want
1410: * to warn about macros before passing it there.
1.79 kristaps 1411: */
1.74 kristaps 1412:
1.252 schwarze 1413: if (r->last != NULL && ! ctl) {
1.78 kristaps 1414: t = r->last->tok;
1.238 schwarze 1415: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1416: if (e == ROFF_IGN)
1.277 schwarze 1417: return e;
1.294 schwarze 1418: assert(e == ROFF_CONT);
1.182 schwarze 1419: }
1.252 schwarze 1420: if (r->eqn != NULL)
1.277 schwarze 1421: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.252 schwarze 1422: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.277 schwarze 1423: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.252 schwarze 1424: if ( ! ctl)
1.277 schwarze 1425: return roff_parsetext(buf, pos, offs);
1.228 schwarze 1426:
1427: /* Skip empty request lines. */
1428:
1.238 schwarze 1429: if (buf->buf[pos] == '"') {
1.228 schwarze 1430: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1431: ln, pos, NULL);
1.277 schwarze 1432: return ROFF_IGN;
1.238 schwarze 1433: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1434: return ROFF_IGN;
1.67 kristaps 1435:
1.79 kristaps 1436: /*
1437: * If a scope is open, go to the child handler for that macro,
1438: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1439: * Don't do so if an equation is open.
1.79 kristaps 1440: */
1.78 kristaps 1441:
1.79 kristaps 1442: if (r->last) {
1443: t = r->last->tok;
1.277 schwarze 1444: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1445: }
1.78 kristaps 1446:
1.243 schwarze 1447: /* No scope is open. This is a new request or macro. */
1448:
1449: spos = pos;
1450: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1451:
1452: /* Tables ignore most macros. */
1453:
1.294 schwarze 1454: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS)) {
1.243 schwarze 1455: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1456: ln, pos, buf->buf + spos);
1.257 schwarze 1457: if (t == ROFF_TS)
1.277 schwarze 1458: return ROFF_IGN;
1.257 schwarze 1459: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1460: pos++;
1.291 schwarze 1461: while (buf->buf[pos] == ' ')
1.257 schwarze 1462: pos++;
1.277 schwarze 1463: return tbl_read(r->tbl, ln, buf->buf, pos);
1.243 schwarze 1464: }
1465:
1.79 kristaps 1466: /*
1.243 schwarze 1467: * This is neither a roff request nor a user-defined macro.
1468: * Let the standard macro set parsers handle it.
1.79 kristaps 1469: */
1.67 kristaps 1470:
1.294 schwarze 1471: if (t == TOKEN_NONE)
1.277 schwarze 1472: return ROFF_CONT;
1.243 schwarze 1473:
1474: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1475:
1.277 schwarze 1476: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.74 kristaps 1477: }
1478:
1.117 kristaps 1479: void
1.74 kristaps 1480: roff_endparse(struct roff *r)
1481: {
1482:
1.110 kristaps 1483: if (r->last)
1.221 schwarze 1484: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1485: r->last->line, r->last->col,
1.295 ! schwarze 1486: roff_name[r->last->tok]);
1.117 kristaps 1487:
1.125 kristaps 1488: if (r->eqn) {
1.221 schwarze 1489: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1490: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.151 kristaps 1491: eqn_end(&r->eqn);
1.125 kristaps 1492: }
1493:
1.117 kristaps 1494: if (r->tbl) {
1.221 schwarze 1495: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1496: r->tbl->line, r->tbl->pos, "TS");
1.151 kristaps 1497: tbl_end(&r->tbl);
1.117 kristaps 1498: }
1.67 kristaps 1499: }
1500:
1501: /*
1502: * Parse a roff node's type from the input buffer. This must be in the
1503: * form of ".foo xxx" in the usual way.
1504: */
1.294 schwarze 1505: static enum roff_tok
1.214 schwarze 1506: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1507: {
1.214 schwarze 1508: char *cp;
1.106 kristaps 1509: const char *mac;
1510: size_t maclen;
1.294 schwarze 1511: enum roff_tok t;
1.67 kristaps 1512:
1.214 schwarze 1513: cp = buf + *pos;
1514:
1515: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1516: return TOKEN_NONE;
1.67 kristaps 1517:
1.214 schwarze 1518: mac = cp;
1519: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1520:
1.106 kristaps 1521: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.295 ! schwarze 1522: ? ROFF_USERDEF : roffhash_find(r->reqtab, mac, maclen);
1.67 kristaps 1523:
1.294 schwarze 1524: if (t != TOKEN_NONE)
1.214 schwarze 1525: *pos = cp - buf;
1.67 kristaps 1526:
1.277 schwarze 1527: return t;
1.67 kristaps 1528: }
1529:
1.266 schwarze 1530: /* --- handling of request blocks ----------------------------------------- */
1531:
1.67 kristaps 1532: static enum rofferr
1.76 kristaps 1533: roff_cblock(ROFF_ARGS)
1.67 kristaps 1534: {
1535:
1.79 kristaps 1536: /*
1537: * A block-close `..' should only be invoked as a child of an
1538: * ignore macro, otherwise raise a warning and just ignore it.
1539: */
1540:
1.238 schwarze 1541: if (r->last == NULL) {
1.221 schwarze 1542: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1543: ln, ppos, "..");
1.277 schwarze 1544: return ROFF_IGN;
1.76 kristaps 1545: }
1.67 kristaps 1546:
1.81 kristaps 1547: switch (r->last->tok) {
1.207 schwarze 1548: case ROFF_am:
1.220 schwarze 1549: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1550: case ROFF_ami:
1551: case ROFF_de:
1.108 schwarze 1552: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1553: case ROFF_dei:
1554: case ROFF_ig:
1.81 kristaps 1555: break;
1556: default:
1.221 schwarze 1557: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1558: ln, ppos, "..");
1.277 schwarze 1559: return ROFF_IGN;
1.76 kristaps 1560: }
1.67 kristaps 1561:
1.238 schwarze 1562: if (buf->buf[pos] != '\0')
1.217 schwarze 1563: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1564: ".. %s", buf->buf + pos);
1.71 kristaps 1565:
1566: roffnode_pop(r);
1.76 kristaps 1567: roffnode_cleanscope(r);
1.277 schwarze 1568: return ROFF_IGN;
1.71 kristaps 1569:
1.67 kristaps 1570: }
1571:
1.76 kristaps 1572: static void
1573: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1574: {
1575:
1.76 kristaps 1576: while (r->last) {
1.173 schwarze 1577: if (--r->last->endspan != 0)
1.76 kristaps 1578: break;
1579: roffnode_pop(r);
1580: }
1.67 kristaps 1581: }
1582:
1.195 schwarze 1583: static void
1584: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1585: {
1586:
1.76 kristaps 1587: if (NULL == r->last) {
1.221 schwarze 1588: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1589: ln, ppos, "\\}");
1.195 schwarze 1590: return;
1.76 kristaps 1591: }
1592:
1.82 kristaps 1593: switch (r->last->tok) {
1.207 schwarze 1594: case ROFF_el:
1595: case ROFF_ie:
1596: case ROFF_if:
1.82 kristaps 1597: break;
1598: default:
1.221 schwarze 1599: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1600: ln, ppos, "\\}");
1.195 schwarze 1601: return;
1.75 kristaps 1602: }
1603:
1.76 kristaps 1604: if (r->last->endspan > -1) {
1.221 schwarze 1605: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1606: ln, ppos, "\\}");
1.195 schwarze 1607: return;
1.76 kristaps 1608: }
1609:
1.75 kristaps 1610: roffnode_pop(r);
1.76 kristaps 1611: roffnode_cleanscope(r);
1.195 schwarze 1612: return;
1.76 kristaps 1613: }
1614:
1615: static enum rofferr
1.80 kristaps 1616: roff_block(ROFF_ARGS)
1.76 kristaps 1617: {
1.220 schwarze 1618: const char *name;
1619: char *iname, *cp;
1.213 schwarze 1620: size_t namesz;
1.106 kristaps 1621:
1.220 schwarze 1622: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1623:
1.238 schwarze 1624: if (tok == ROFF_de1)
1.220 schwarze 1625: tok = ROFF_de;
1.251 schwarze 1626: else if (tok == ROFF_dei1)
1627: tok = ROFF_dei;
1.238 schwarze 1628: else if (tok == ROFF_am1)
1.220 schwarze 1629: tok = ROFF_am;
1.251 schwarze 1630: else if (tok == ROFF_ami1)
1631: tok = ROFF_ami;
1.220 schwarze 1632:
1633: /* Parse the macro name argument. */
1634:
1.238 schwarze 1635: cp = buf->buf + pos;
1636: if (tok == ROFF_ig) {
1.220 schwarze 1637: iname = NULL;
1638: namesz = 0;
1639: } else {
1640: iname = cp;
1641: namesz = roff_getname(r, &cp, ln, ppos);
1642: iname[namesz] = '\0';
1643: }
1.107 kristaps 1644:
1.220 schwarze 1645: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1646:
1.238 schwarze 1647: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1648: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1649: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1650: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1651: "%.*s", (int)namesz, iname);
1652: namesz = 0;
1653: } else
1654: namesz = strlen(name);
1655: } else
1656: name = iname;
1.107 kristaps 1657:
1.238 schwarze 1658: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1659: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 ! schwarze 1660: ln, ppos, roff_name[tok]);
1.277 schwarze 1661: return ROFF_IGN;
1.220 schwarze 1662: }
1.80 kristaps 1663:
1.106 kristaps 1664: roffnode_push(r, tok, name, ln, ppos);
1665:
1666: /*
1667: * At the beginning of a `de' macro, clear the existing string
1668: * with the same name, if there is one. New content will be
1.193 schwarze 1669: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1670: */
1.107 kristaps 1671:
1.238 schwarze 1672: if (tok == ROFF_de || tok == ROFF_dei)
1.213 schwarze 1673: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.76 kristaps 1674:
1.238 schwarze 1675: if (*cp == '\0')
1.277 schwarze 1676: return ROFF_IGN;
1.78 kristaps 1677:
1.220 schwarze 1678: /* Get the custom end marker. */
1.107 kristaps 1679:
1.220 schwarze 1680: iname = cp;
1.213 schwarze 1681: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1682:
1683: /* Resolve the end marker if it is indirect. */
1684:
1.238 schwarze 1685: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1686: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1687: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1688: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1689: "%.*s", (int)namesz, iname);
1690: namesz = 0;
1691: } else
1692: namesz = strlen(name);
1693: } else
1694: name = iname;
1695:
1.213 schwarze 1696: if (namesz)
1697: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1698:
1.238 schwarze 1699: if (*cp != '\0')
1.217 schwarze 1700: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 ! schwarze 1701: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 1702:
1.277 schwarze 1703: return ROFF_IGN;
1.78 kristaps 1704: }
1705:
1706: static enum rofferr
1.80 kristaps 1707: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1708: {
1.294 schwarze 1709: enum roff_tok t;
1.79 kristaps 1710: int i, j;
1711:
1712: /*
1713: * First check whether a custom macro exists at this level. If
1714: * it does, then check against it. This is some of groff's
1715: * stranger behaviours. If we encountered a custom end-scope
1716: * tag and that tag also happens to be a "real" macro, then we
1717: * need to try interpreting it again as a real macro. If it's
1718: * not, then return ignore. Else continue.
1719: */
1720:
1721: if (r->last->end) {
1.130 kristaps 1722: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1723: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1724: break;
1725:
1.238 schwarze 1726: if (r->last->end[j] == '\0' &&
1727: (buf->buf[i] == '\0' ||
1728: buf->buf[i] == ' ' ||
1729: buf->buf[i] == '\t')) {
1.79 kristaps 1730: roffnode_pop(r);
1731: roffnode_cleanscope(r);
1732:
1.238 schwarze 1733: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1734: i++;
1735:
1736: pos = i;
1.238 schwarze 1737: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 1738: TOKEN_NONE)
1.277 schwarze 1739: return ROFF_RERUN;
1740: return ROFF_IGN;
1.79 kristaps 1741: }
1742: }
1743:
1744: /*
1745: * If we have no custom end-query or lookup failed, then try
1746: * pulling it out of the hashtable.
1747: */
1748:
1.238 schwarze 1749: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1750:
1.238 schwarze 1751: if (t != ROFF_cblock) {
1752: if (tok != ROFF_ig)
1753: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1754: return ROFF_IGN;
1.106 kristaps 1755: }
1.79 kristaps 1756:
1.277 schwarze 1757: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1758: }
1759:
1760: static enum rofferr
1.80 kristaps 1761: roff_block_text(ROFF_ARGS)
1.78 kristaps 1762: {
1763:
1.238 schwarze 1764: if (tok != ROFF_ig)
1765: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1766:
1.277 schwarze 1767: return ROFF_IGN;
1.78 kristaps 1768: }
1769:
1770: static enum rofferr
1.82 kristaps 1771: roff_cond_sub(ROFF_ARGS)
1772: {
1.294 schwarze 1773: enum roff_tok t;
1.139 kristaps 1774: char *ep;
1.198 schwarze 1775: int rr;
1.82 kristaps 1776:
1777: rr = r->last->rule;
1.139 kristaps 1778: roffnode_cleanscope(r);
1.238 schwarze 1779: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.82 kristaps 1780:
1.139 kristaps 1781: /*
1.177 schwarze 1782: * Fully handle known macros when they are structurally
1783: * required or when the conditional evaluated to true.
1.87 kristaps 1784: */
1785:
1.294 schwarze 1786: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.277 schwarze 1787: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.144 kristaps 1788:
1.196 schwarze 1789: /*
1790: * If `\}' occurs on a macro line without a preceding macro,
1791: * drop the line completely.
1792: */
1793:
1.238 schwarze 1794: ep = buf->buf + pos;
1795: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1796: rr = 0;
1.196 schwarze 1797:
1.177 schwarze 1798: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1799:
1.238 schwarze 1800: while ((ep = strchr(ep, '\\')) != NULL) {
1801: if (*(++ep) == '}') {
1.197 schwarze 1802: *ep = '&';
1.238 schwarze 1803: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1804: }
1.247 schwarze 1805: if (*ep != '\0')
1806: ++ep;
1.177 schwarze 1807: }
1.277 schwarze 1808: return rr ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 1809: }
1810:
1811: static enum rofferr
1812: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1813: {
1.140 kristaps 1814: char *ep;
1.198 schwarze 1815: int rr;
1.82 kristaps 1816:
1817: rr = r->last->rule;
1.140 kristaps 1818: roffnode_cleanscope(r);
1.82 kristaps 1819:
1.238 schwarze 1820: ep = buf->buf + pos;
1821: while ((ep = strchr(ep, '\\')) != NULL) {
1822: if (*(++ep) == '}') {
1.197 schwarze 1823: *ep = '&';
1.238 schwarze 1824: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1825: }
1.247 schwarze 1826: if (*ep != '\0')
1827: ++ep;
1.78 kristaps 1828: }
1.277 schwarze 1829: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 1830: }
1831:
1.266 schwarze 1832: /* --- handling of numeric and conditional expressions -------------------- */
1833:
1.204 schwarze 1834: /*
1835: * Parse a single signed integer number. Stop at the first non-digit.
1836: * If there is at least one digit, return success and advance the
1837: * parse point, else return failure and let the parse point unchanged.
1838: * Ignore overflows, treat them just like the C language.
1839: */
1.184 schwarze 1840: static int
1.261 schwarze 1841: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 1842: {
1.261 schwarze 1843: int myres, scaled, n, p;
1.206 schwarze 1844:
1845: if (NULL == res)
1846: res = &myres;
1.184 schwarze 1847:
1848: p = *pos;
1849: n = v[p] == '-';
1.261 schwarze 1850: if (n || v[p] == '+')
1.184 schwarze 1851: p++;
1852:
1.261 schwarze 1853: if (flags & ROFFNUM_WHITE)
1854: while (isspace((unsigned char)v[p]))
1855: p++;
1856:
1.184 schwarze 1857: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 1858: *res = 10 * *res + v[p] - '0';
1.184 schwarze 1859: if (p == *pos + n)
1860: return 0;
1861:
1862: if (n)
1863: *res = -*res;
1864:
1.254 schwarze 1865: /* Each number may be followed by one optional scaling unit. */
1866:
1867: switch (v[p]) {
1868: case 'f':
1.261 schwarze 1869: scaled = *res * 65536;
1.254 schwarze 1870: break;
1871: case 'i':
1.261 schwarze 1872: scaled = *res * 240;
1.254 schwarze 1873: break;
1874: case 'c':
1.261 schwarze 1875: scaled = *res * 240 / 2.54;
1.254 schwarze 1876: break;
1877: case 'v':
1878: case 'P':
1.261 schwarze 1879: scaled = *res * 40;
1.254 schwarze 1880: break;
1881: case 'm':
1882: case 'n':
1.261 schwarze 1883: scaled = *res * 24;
1.254 schwarze 1884: break;
1885: case 'p':
1.261 schwarze 1886: scaled = *res * 10 / 3;
1.254 schwarze 1887: break;
1888: case 'u':
1.261 schwarze 1889: scaled = *res;
1.254 schwarze 1890: break;
1891: case 'M':
1.261 schwarze 1892: scaled = *res * 6 / 25;
1.254 schwarze 1893: break;
1894: default:
1.261 schwarze 1895: scaled = *res;
1.254 schwarze 1896: p--;
1897: break;
1898: }
1.261 schwarze 1899: if (flags & ROFFNUM_SCALE)
1900: *res = scaled;
1.254 schwarze 1901:
1902: *pos = p + 1;
1.277 schwarze 1903: return 1;
1.184 schwarze 1904: }
1905:
1.198 schwarze 1906: /*
1907: * Evaluate a string comparison condition.
1908: * The first character is the delimiter.
1909: * Succeed if the string up to its second occurrence
1910: * matches the string up to its third occurence.
1911: * Advance the cursor after the third occurrence
1912: * or lacking that, to the end of the line.
1913: */
1914: static int
1915: roff_evalstrcond(const char *v, int *pos)
1916: {
1917: const char *s1, *s2, *s3;
1918: int match;
1919:
1920: match = 0;
1921: s1 = v + *pos; /* initial delimiter */
1922: s2 = s1 + 1; /* for scanning the first string */
1923: s3 = strchr(s2, *s1); /* for scanning the second string */
1924:
1925: if (NULL == s3) /* found no middle delimiter */
1926: goto out;
1927:
1928: while ('\0' != *++s3) {
1929: if (*s2 != *s3) { /* mismatch */
1930: s3 = strchr(s3, *s1);
1931: break;
1932: }
1933: if (*s3 == *s1) { /* found the final delimiter */
1934: match = 1;
1935: break;
1936: }
1937: s2++;
1938: }
1939:
1940: out:
1941: if (NULL == s3)
1942: s3 = strchr(s2, '\0');
1.242 schwarze 1943: else if (*s3 != '\0')
1.198 schwarze 1944: s3++;
1945: *pos = s3 - v;
1.277 schwarze 1946: return match;
1.198 schwarze 1947: }
1948:
1.204 schwarze 1949: /*
1950: * Evaluate an optionally negated single character, numerical,
1951: * or string condition.
1952: */
1.198 schwarze 1953: static int
1.271 schwarze 1954: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 1955: {
1.271 schwarze 1956: char *cp, *name;
1957: size_t sz;
1.241 schwarze 1958: int number, savepos, wanttrue;
1.88 kristaps 1959:
1.198 schwarze 1960: if ('!' == v[*pos]) {
1961: wanttrue = 0;
1962: (*pos)++;
1963: } else
1964: wanttrue = 1;
1965:
1.88 kristaps 1966: switch (v[*pos]) {
1.240 schwarze 1967: case '\0':
1.277 schwarze 1968: return 0;
1.207 schwarze 1969: case 'n':
1970: case 'o':
1.88 kristaps 1971: (*pos)++;
1.277 schwarze 1972: return wanttrue;
1.207 schwarze 1973: case 'c':
1974: case 'd':
1975: case 'e':
1976: case 't':
1.239 schwarze 1977: case 'v':
1.88 kristaps 1978: (*pos)++;
1.277 schwarze 1979: return !wanttrue;
1.271 schwarze 1980: case 'r':
1981: cp = name = v + ++*pos;
1982: sz = roff_getname(r, &cp, ln, *pos);
1983: *pos = cp - v;
1.277 schwarze 1984: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.88 kristaps 1985: default:
1986: break;
1987: }
1988:
1.241 schwarze 1989: savepos = *pos;
1.261 schwarze 1990: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 1991: return (number > 0) == wanttrue;
1.241 schwarze 1992: else if (*pos == savepos)
1.277 schwarze 1993: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 1994: else
1.277 schwarze 1995: return 0;
1.88 kristaps 1996: }
1997:
1.74 kristaps 1998: static enum rofferr
1.103 kristaps 1999: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2000: {
1.123 schwarze 2001:
1.277 schwarze 2002: return ROFF_IGN;
1.89 kristaps 2003: }
2004:
1.104 kristaps 2005: static enum rofferr
1.251 schwarze 2006: roff_insec(ROFF_ARGS)
2007: {
2008:
2009: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 ! schwarze 2010: ln, ppos, roff_name[tok]);
1.277 schwarze 2011: return ROFF_IGN;
1.251 schwarze 2012: }
2013:
2014: static enum rofferr
2015: roff_unsupp(ROFF_ARGS)
2016: {
2017:
2018: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 ! schwarze 2019: ln, ppos, roff_name[tok]);
1.277 schwarze 2020: return ROFF_IGN;
1.251 schwarze 2021: }
2022:
2023: static enum rofferr
1.82 kristaps 2024: roff_cond(ROFF_ARGS)
1.74 kristaps 2025: {
1.173 schwarze 2026:
2027: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2028:
1.207 schwarze 2029: /*
1.134 kristaps 2030: * An `.el' has no conditional body: it will consume the value
2031: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2032: * defaults to DENY.
1.134 kristaps 2033: *
2034: * If we're not an `el', however, then evaluate the conditional.
2035: */
1.133 kristaps 2036:
1.238 schwarze 2037: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2038: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2039: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2040:
1.134 kristaps 2041: /*
2042: * An if-else will put the NEGATION of the current evaluated
2043: * conditional into the stack of rules.
2044: */
2045:
1.238 schwarze 2046: if (tok == ROFF_ie) {
1.223 schwarze 2047: if (r->rstackpos + 1 == r->rstacksz) {
2048: r->rstacksz += 16;
2049: r->rstack = mandoc_reallocarray(r->rstack,
2050: r->rstacksz, sizeof(int));
1.134 kristaps 2051: }
1.198 schwarze 2052: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2053: }
1.88 kristaps 2054:
2055: /* If the parent has false as its rule, then so do we. */
2056:
1.198 schwarze 2057: if (r->last->parent && !r->last->parent->rule)
2058: r->last->rule = 0;
1.88 kristaps 2059:
2060: /*
1.173 schwarze 2061: * Determine scope.
2062: * If there is nothing on the line after the conditional,
2063: * not even whitespace, use next-line scope.
1.88 kristaps 2064: */
1.74 kristaps 2065:
1.238 schwarze 2066: if (buf->buf[pos] == '\0') {
1.173 schwarze 2067: r->last->endspan = 2;
2068: goto out;
2069: }
2070:
1.238 schwarze 2071: while (buf->buf[pos] == ' ')
1.173 schwarze 2072: pos++;
2073:
2074: /* An opening brace requests multiline scope. */
1.75 kristaps 2075:
1.238 schwarze 2076: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2077: r->last->endspan = -1;
2078: pos += 2;
1.272 schwarze 2079: while (buf->buf[pos] == ' ')
2080: pos++;
1.173 schwarze 2081: goto out;
1.207 schwarze 2082: }
1.74 kristaps 2083:
1.77 kristaps 2084: /*
1.173 schwarze 2085: * Anything else following the conditional causes
2086: * single-line scope. Warn if the scope contains
2087: * nothing but trailing whitespace.
1.77 kristaps 2088: */
2089:
1.238 schwarze 2090: if (buf->buf[pos] == '\0')
1.216 schwarze 2091: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 ! schwarze 2092: ln, ppos, roff_name[tok]);
1.77 kristaps 2093:
1.173 schwarze 2094: r->last->endspan = 1;
1.74 kristaps 2095:
1.173 schwarze 2096: out:
1.75 kristaps 2097: *offs = pos;
1.277 schwarze 2098: return ROFF_RERUN;
1.83 schwarze 2099: }
2100:
2101: static enum rofferr
1.92 schwarze 2102: roff_ds(ROFF_ARGS)
2103: {
1.212 schwarze 2104: char *string;
2105: const char *name;
2106: size_t namesz;
1.96 kristaps 2107:
1.251 schwarze 2108: /* Ignore groff compatibility mode for now. */
2109:
2110: if (tok == ROFF_ds1)
2111: tok = ROFF_ds;
2112: else if (tok == ROFF_as1)
2113: tok = ROFF_as;
2114:
1.96 kristaps 2115: /*
1.212 schwarze 2116: * The first word is the name of the string.
2117: * If it is empty or terminated by an escape sequence,
2118: * abort the `ds' request without defining anything.
1.96 kristaps 2119: */
1.92 schwarze 2120:
1.238 schwarze 2121: name = string = buf->buf + pos;
2122: if (*name == '\0')
1.277 schwarze 2123: return ROFF_IGN;
1.92 schwarze 2124:
1.212 schwarze 2125: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2126: if (name[namesz] == '\\')
1.277 schwarze 2127: return ROFF_IGN;
1.212 schwarze 2128:
2129: /* Read past the initial double-quote, if any. */
1.238 schwarze 2130: if (*string == '"')
1.92 schwarze 2131: string++;
2132:
1.96 kristaps 2133: /* The rest is the value. */
1.212 schwarze 2134: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2135: ROFF_as == tok);
1.277 schwarze 2136: return ROFF_IGN;
1.92 schwarze 2137: }
2138:
1.204 schwarze 2139: /*
2140: * Parse a single operator, one or two characters long.
2141: * If the operator is recognized, return success and advance the
2142: * parse point, else return failure and let the parse point unchanged.
2143: */
2144: static int
2145: roff_getop(const char *v, int *pos, char *res)
2146: {
2147:
2148: *res = v[*pos];
2149:
2150: switch (*res) {
1.207 schwarze 2151: case '+':
2152: case '-':
2153: case '*':
2154: case '/':
2155: case '%':
2156: case '&':
2157: case ':':
1.204 schwarze 2158: break;
2159: case '<':
2160: switch (v[*pos + 1]) {
1.207 schwarze 2161: case '=':
1.204 schwarze 2162: *res = 'l';
2163: (*pos)++;
2164: break;
1.207 schwarze 2165: case '>':
1.204 schwarze 2166: *res = '!';
2167: (*pos)++;
2168: break;
1.207 schwarze 2169: case '?':
1.204 schwarze 2170: *res = 'i';
2171: (*pos)++;
2172: break;
2173: default:
2174: break;
2175: }
2176: break;
2177: case '>':
2178: switch (v[*pos + 1]) {
1.207 schwarze 2179: case '=':
1.204 schwarze 2180: *res = 'g';
2181: (*pos)++;
2182: break;
1.207 schwarze 2183: case '?':
1.204 schwarze 2184: *res = 'a';
2185: (*pos)++;
2186: break;
2187: default:
2188: break;
2189: }
2190: break;
2191: case '=':
2192: if ('=' == v[*pos + 1])
2193: (*pos)++;
2194: break;
2195: default:
1.277 schwarze 2196: return 0;
1.204 schwarze 2197: }
2198: (*pos)++;
2199:
1.277 schwarze 2200: return *res;
1.204 schwarze 2201: }
2202:
2203: /*
2204: * Evaluate either a parenthesized numeric expression
2205: * or a single signed integer number.
2206: */
2207: static int
1.235 schwarze 2208: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2209: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2210: {
2211:
2212: if ('(' != v[*pos])
1.277 schwarze 2213: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2214:
2215: (*pos)++;
1.261 schwarze 2216: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2217: return 0;
1.204 schwarze 2218:
1.206 schwarze 2219: /*
2220: * Omission of the closing parenthesis
2221: * is an error in validation mode,
2222: * but ignored in evaluation mode.
2223: */
2224:
1.204 schwarze 2225: if (')' == v[*pos])
2226: (*pos)++;
1.206 schwarze 2227: else if (NULL == res)
1.277 schwarze 2228: return 0;
1.204 schwarze 2229:
1.277 schwarze 2230: return 1;
1.204 schwarze 2231: }
2232:
2233: /*
2234: * Evaluate a complete numeric expression.
2235: * Proceed left to right, there is no concept of precedence.
2236: */
2237: static int
1.235 schwarze 2238: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2239: int *pos, int *res, int flags)
1.204 schwarze 2240: {
2241: int mypos, operand2;
2242: char operator;
2243:
2244: if (NULL == pos) {
2245: mypos = 0;
2246: pos = &mypos;
2247: }
2248:
1.261 schwarze 2249: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2250: while (isspace((unsigned char)v[*pos]))
2251: (*pos)++;
2252:
1.261 schwarze 2253: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2254: return 0;
1.204 schwarze 2255:
2256: while (1) {
1.261 schwarze 2257: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2258: while (isspace((unsigned char)v[*pos]))
2259: (*pos)++;
2260:
2261: if ( ! roff_getop(v, pos, &operator))
2262: break;
2263:
1.261 schwarze 2264: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2265: while (isspace((unsigned char)v[*pos]))
2266: (*pos)++;
2267:
1.261 schwarze 2268: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2269: return 0;
1.204 schwarze 2270:
1.261 schwarze 2271: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2272: while (isspace((unsigned char)v[*pos]))
2273: (*pos)++;
1.206 schwarze 2274:
2275: if (NULL == res)
2276: continue;
1.204 schwarze 2277:
2278: switch (operator) {
1.207 schwarze 2279: case '+':
1.204 schwarze 2280: *res += operand2;
2281: break;
1.207 schwarze 2282: case '-':
1.204 schwarze 2283: *res -= operand2;
2284: break;
1.207 schwarze 2285: case '*':
1.204 schwarze 2286: *res *= operand2;
2287: break;
1.207 schwarze 2288: case '/':
1.244 schwarze 2289: if (operand2 == 0) {
1.235 schwarze 2290: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2291: r->parse, ln, *pos, v);
2292: *res = 0;
2293: break;
2294: }
1.204 schwarze 2295: *res /= operand2;
2296: break;
1.207 schwarze 2297: case '%':
1.244 schwarze 2298: if (operand2 == 0) {
2299: mandoc_msg(MANDOCERR_DIVZERO,
2300: r->parse, ln, *pos, v);
2301: *res = 0;
2302: break;
2303: }
1.204 schwarze 2304: *res %= operand2;
2305: break;
1.207 schwarze 2306: case '<':
1.204 schwarze 2307: *res = *res < operand2;
2308: break;
1.207 schwarze 2309: case '>':
1.204 schwarze 2310: *res = *res > operand2;
2311: break;
1.207 schwarze 2312: case 'l':
1.204 schwarze 2313: *res = *res <= operand2;
2314: break;
1.207 schwarze 2315: case 'g':
1.204 schwarze 2316: *res = *res >= operand2;
2317: break;
1.207 schwarze 2318: case '=':
1.204 schwarze 2319: *res = *res == operand2;
2320: break;
1.207 schwarze 2321: case '!':
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 'i':
1.204 schwarze 2331: if (operand2 < *res)
2332: *res = operand2;
2333: break;
1.207 schwarze 2334: case 'a':
1.204 schwarze 2335: if (operand2 > *res)
2336: *res = operand2;
2337: break;
2338: default:
2339: abort();
2340: }
2341: }
1.277 schwarze 2342: return 1;
1.204 schwarze 2343: }
2344:
1.266 schwarze 2345: /* --- register management ------------------------------------------------ */
2346:
1.180 schwarze 2347: void
1.187 schwarze 2348: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2349: {
1.180 schwarze 2350: struct roffreg *reg;
2351:
2352: /* Search for an existing register with the same name. */
2353: reg = r->regtab;
2354:
2355: while (reg && strcmp(name, reg->key.p))
2356: reg = reg->next;
1.147 kristaps 2357:
1.180 schwarze 2358: if (NULL == reg) {
2359: /* Create a new register. */
2360: reg = mandoc_malloc(sizeof(struct roffreg));
2361: reg->key.p = mandoc_strdup(name);
2362: reg->key.sz = strlen(name);
1.187 schwarze 2363: reg->val = 0;
1.180 schwarze 2364: reg->next = r->regtab;
2365: r->regtab = reg;
2366: }
2367:
1.187 schwarze 2368: if ('+' == sign)
2369: reg->val += val;
2370: else if ('-' == sign)
2371: reg->val -= val;
2372: else
2373: reg->val = val;
1.147 kristaps 2374: }
2375:
1.192 schwarze 2376: /*
2377: * Handle some predefined read-only number registers.
2378: * For now, return -1 if the requested register is not predefined;
2379: * in case a predefined read-only register having the value -1
2380: * were to turn up, another special value would have to be chosen.
2381: */
2382: static int
1.273 schwarze 2383: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2384: {
2385:
2386: switch (*name) {
1.273 schwarze 2387: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2388: return r->argc;
1.207 schwarze 2389: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2390: return 0;
1.207 schwarze 2391: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2392: return 1;
1.207 schwarze 2393: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2394: return 24;
1.207 schwarze 2395: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2396: return 0;
1.207 schwarze 2397: case 'T': /* Some output device is always defined. */
1.277 schwarze 2398: return 1;
1.207 schwarze 2399: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2400: return 40;
1.192 schwarze 2401: default:
1.277 schwarze 2402: return -1;
1.192 schwarze 2403: }
2404: }
2405:
1.181 schwarze 2406: int
1.180 schwarze 2407: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2408: {
1.180 schwarze 2409: struct roffreg *reg;
1.192 schwarze 2410: int val;
2411:
2412: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2413: val = roff_getregro(r, name + 1);
1.192 schwarze 2414: if (-1 != val)
1.277 schwarze 2415: return val;
1.192 schwarze 2416: }
1.180 schwarze 2417:
2418: for (reg = r->regtab; reg; reg = reg->next)
2419: if (0 == strcmp(name, reg->key.p))
1.277 schwarze 2420: return reg->val;
1.181 schwarze 2421:
1.277 schwarze 2422: return 0;
1.181 schwarze 2423: }
2424:
2425: static int
2426: roff_getregn(const struct roff *r, const char *name, size_t len)
2427: {
2428: struct roffreg *reg;
1.192 schwarze 2429: int val;
2430:
2431: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2432: val = roff_getregro(r, name + 1);
1.192 schwarze 2433: if (-1 != val)
1.277 schwarze 2434: return val;
1.192 schwarze 2435: }
1.181 schwarze 2436:
2437: for (reg = r->regtab; reg; reg = reg->next)
2438: if (len == reg->key.sz &&
2439: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2440: return reg->val;
1.271 schwarze 2441:
1.277 schwarze 2442: return 0;
1.271 schwarze 2443: }
2444:
2445: static int
2446: roff_hasregn(const struct roff *r, const char *name, size_t len)
2447: {
2448: struct roffreg *reg;
2449: int val;
2450:
2451: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2452: val = roff_getregro(r, name + 1);
1.271 schwarze 2453: if (-1 != val)
1.277 schwarze 2454: return 1;
1.271 schwarze 2455: }
2456:
2457: for (reg = r->regtab; reg; reg = reg->next)
2458: if (len == reg->key.sz &&
2459: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2460: return 1;
1.147 kristaps 2461:
1.277 schwarze 2462: return 0;
1.147 kristaps 2463: }
2464:
1.180 schwarze 2465: static void
2466: roff_freereg(struct roffreg *reg)
1.147 kristaps 2467: {
1.180 schwarze 2468: struct roffreg *old_reg;
1.147 kristaps 2469:
1.180 schwarze 2470: while (NULL != reg) {
2471: free(reg->key.p);
2472: old_reg = reg;
2473: reg = reg->next;
2474: free(old_reg);
2475: }
1.147 kristaps 2476: }
1.92 schwarze 2477:
2478: static enum rofferr
1.89 kristaps 2479: roff_nr(ROFF_ARGS)
1.83 schwarze 2480: {
1.212 schwarze 2481: char *key, *val;
2482: size_t keysz;
1.138 kristaps 2483: int iv;
1.187 schwarze 2484: char sign;
1.89 kristaps 2485:
1.238 schwarze 2486: key = val = buf->buf + pos;
2487: if (*key == '\0')
1.277 schwarze 2488: return ROFF_IGN;
1.212 schwarze 2489:
2490: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2491: if (key[keysz] == '\\')
1.277 schwarze 2492: return ROFF_IGN;
1.212 schwarze 2493: key[keysz] = '\0';
1.89 kristaps 2494:
1.187 schwarze 2495: sign = *val;
1.238 schwarze 2496: if (sign == '+' || sign == '-')
1.187 schwarze 2497: val++;
2498:
1.261 schwarze 2499: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2500: roff_setreg(r, key, iv, sign);
1.109 kristaps 2501:
1.277 schwarze 2502: return ROFF_IGN;
1.203 schwarze 2503: }
2504:
2505: static enum rofferr
2506: roff_rr(ROFF_ARGS)
2507: {
2508: struct roffreg *reg, **prev;
1.212 schwarze 2509: char *name, *cp;
2510: size_t namesz;
1.203 schwarze 2511:
1.238 schwarze 2512: name = cp = buf->buf + pos;
2513: if (*name == '\0')
1.277 schwarze 2514: return ROFF_IGN;
1.212 schwarze 2515: namesz = roff_getname(r, &cp, ln, pos);
2516: name[namesz] = '\0';
1.203 schwarze 2517:
2518: prev = &r->regtab;
2519: while (1) {
2520: reg = *prev;
1.238 schwarze 2521: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2522: break;
2523: prev = ®->next;
2524: }
1.238 schwarze 2525: if (reg != NULL) {
1.203 schwarze 2526: *prev = reg->next;
2527: free(reg->key.p);
2528: free(reg);
2529: }
1.277 schwarze 2530: return ROFF_IGN;
1.122 schwarze 2531: }
2532:
1.266 schwarze 2533: /* --- handler functions for roff requests -------------------------------- */
2534:
1.122 schwarze 2535: static enum rofferr
2536: roff_rm(ROFF_ARGS)
2537: {
2538: const char *name;
2539: char *cp;
1.212 schwarze 2540: size_t namesz;
1.122 schwarze 2541:
1.238 schwarze 2542: cp = buf->buf + pos;
2543: while (*cp != '\0') {
1.212 schwarze 2544: name = cp;
1.238 schwarze 2545: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2546: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.238 schwarze 2547: if (name[namesz] == '\\')
1.212 schwarze 2548: break;
1.122 schwarze 2549: }
1.277 schwarze 2550: return ROFF_IGN;
1.178 schwarze 2551: }
2552:
2553: static enum rofferr
2554: roff_it(ROFF_ARGS)
2555: {
2556: int iv;
2557:
2558: /* Parse the number of lines. */
1.261 schwarze 2559:
2560: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2561: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2562: ln, ppos, buf->buf + 1);
1.277 schwarze 2563: return ROFF_IGN;
1.178 schwarze 2564: }
2565:
1.262 schwarze 2566: while (isspace((unsigned char)buf->buf[pos]))
2567: pos++;
2568:
2569: /*
2570: * Arm the input line trap.
2571: * Special-casing "an-trap" is an ugly workaround to cope
2572: * with DocBook stupidly fiddling with man(7) internals.
2573: */
1.261 schwarze 2574:
1.178 schwarze 2575: roffit_lines = iv;
1.262 schwarze 2576: roffit_macro = mandoc_strdup(iv != 1 ||
2577: strcmp(buf->buf + pos, "an-trap") ?
2578: buf->buf + pos : "br");
1.277 schwarze 2579: return ROFF_IGN;
1.175 schwarze 2580: }
2581:
2582: static enum rofferr
2583: roff_Dd(ROFF_ARGS)
2584: {
2585: const char *const *cp;
2586:
1.227 schwarze 2587: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.175 schwarze 2588: for (cp = __mdoc_reserved; *cp; cp++)
2589: roff_setstr(r, *cp, NULL, 0);
2590:
1.227 schwarze 2591: if (r->format == 0)
2592: r->format = MPARSE_MDOC;
2593:
1.277 schwarze 2594: return ROFF_CONT;
1.175 schwarze 2595: }
2596:
2597: static enum rofferr
2598: roff_TH(ROFF_ARGS)
2599: {
2600: const char *const *cp;
2601:
1.227 schwarze 2602: if ((r->options & MPARSE_QUICK) == 0)
1.175 schwarze 2603: for (cp = __man_reserved; *cp; cp++)
2604: roff_setstr(r, *cp, NULL, 0);
2605:
1.227 schwarze 2606: if (r->format == 0)
2607: r->format = MPARSE_MAN;
2608:
1.277 schwarze 2609: return ROFF_CONT;
1.109 kristaps 2610: }
2611:
2612: static enum rofferr
2613: roff_TE(ROFF_ARGS)
2614: {
2615:
2616: if (NULL == r->tbl)
1.221 schwarze 2617: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2618: ln, ppos, "TE");
1.258 schwarze 2619: else if ( ! tbl_end(&r->tbl)) {
2620: free(buf->buf);
2621: buf->buf = mandoc_strdup(".sp");
2622: buf->sz = 4;
1.277 schwarze 2623: return ROFF_REPARSE;
1.258 schwarze 2624: }
1.277 schwarze 2625: return ROFF_IGN;
1.112 kristaps 2626: }
2627:
2628: static enum rofferr
2629: roff_T_(ROFF_ARGS)
2630: {
2631:
2632: if (NULL == r->tbl)
1.221 schwarze 2633: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2634: ln, ppos, "T&");
1.112 kristaps 2635: else
1.116 kristaps 2636: tbl_restart(ppos, ln, r->tbl);
1.112 kristaps 2637:
1.277 schwarze 2638: return ROFF_IGN;
1.109 kristaps 2639: }
2640:
1.230 schwarze 2641: /*
2642: * Handle in-line equation delimiters.
2643: */
2644: static enum rofferr
1.238 schwarze 2645: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2646: {
1.233 schwarze 2647: char *cp1, *cp2;
2648: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2649:
1.230 schwarze 2650: /*
2651: * Outside equations, look for an opening delimiter.
2652: * If we are inside an equation, we already know it is
2653: * in-line, or this function wouldn't have been called;
2654: * so look for a closing delimiter.
2655: */
2656:
1.238 schwarze 2657: cp1 = buf->buf + pos;
1.230 schwarze 2658: cp2 = strchr(cp1, r->eqn == NULL ?
2659: r->last_eqn->odelim : r->last_eqn->cdelim);
2660: if (cp2 == NULL)
1.277 schwarze 2661: return ROFF_CONT;
1.230 schwarze 2662:
1.233 schwarze 2663: *cp2++ = '\0';
2664: bef_pr = bef_nl = aft_nl = aft_pr = "";
2665:
2666: /* Handle preceding text, protecting whitespace. */
2667:
1.238 schwarze 2668: if (*buf->buf != '\0') {
1.233 schwarze 2669: if (r->eqn == NULL)
2670: bef_pr = "\\&";
2671: bef_nl = "\n";
2672: }
2673:
2674: /*
2675: * Prepare replacing the delimiter with an equation macro
2676: * and drop leading white space from the equation.
2677: */
1.230 schwarze 2678:
1.233 schwarze 2679: if (r->eqn == NULL) {
2680: while (*cp2 == ' ')
2681: cp2++;
2682: mac = ".EQ";
2683: } else
2684: mac = ".EN";
2685:
2686: /* Handle following text, protecting whitespace. */
2687:
2688: if (*cp2 != '\0') {
2689: aft_nl = "\n";
2690: if (r->eqn != NULL)
2691: aft_pr = "\\&";
2692: }
2693:
2694: /* Do the actual replacement. */
2695:
1.238 schwarze 2696: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2697: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2698: free(buf->buf);
2699: buf->buf = cp1;
1.230 schwarze 2700:
2701: /* Toggle the in-line state of the eqn subsystem. */
2702:
2703: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2704: return ROFF_REPARSE;
1.151 kristaps 2705: }
2706:
1.235 schwarze 2707: static enum rofferr
2708: roff_EQ(ROFF_ARGS)
1.125 kristaps 2709: {
1.151 kristaps 2710: struct eqn_node *e;
1.125 kristaps 2711:
1.238 schwarze 2712: assert(r->eqn == NULL);
1.235 schwarze 2713: e = eqn_alloc(ppos, ln, r->parse);
1.125 kristaps 2714:
1.230 schwarze 2715: if (r->last_eqn) {
1.125 kristaps 2716: r->last_eqn->next = e;
1.230 schwarze 2717: e->delim = r->last_eqn->delim;
2718: e->odelim = r->last_eqn->odelim;
2719: e->cdelim = r->last_eqn->cdelim;
2720: } else
1.125 kristaps 2721: r->first_eqn = r->last_eqn = e;
2722:
2723: r->eqn = r->last_eqn = e;
1.151 kristaps 2724:
1.238 schwarze 2725: if (buf->buf[pos] != '\0')
1.235 schwarze 2726: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2727: ".EQ %s", buf->buf + pos);
1.151 kristaps 2728:
1.277 schwarze 2729: return ROFF_IGN;
1.125 kristaps 2730: }
2731:
2732: static enum rofferr
2733: roff_EN(ROFF_ARGS)
2734: {
2735:
1.221 schwarze 2736: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.277 schwarze 2737: return ROFF_IGN;
1.125 kristaps 2738: }
2739:
2740: static enum rofferr
1.109 kristaps 2741: roff_TS(ROFF_ARGS)
2742: {
1.176 schwarze 2743: struct tbl_node *tbl;
1.89 kristaps 2744:
1.115 kristaps 2745: if (r->tbl) {
1.221 schwarze 2746: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2747: ln, ppos, "TS breaks TS");
1.151 kristaps 2748: tbl_end(&r->tbl);
1.115 kristaps 2749: }
1.83 schwarze 2750:
1.176 schwarze 2751: tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2752:
2753: if (r->last_tbl)
1.176 schwarze 2754: r->last_tbl->next = tbl;
1.113 kristaps 2755: else
1.176 schwarze 2756: r->first_tbl = r->last_tbl = tbl;
1.113 kristaps 2757:
1.176 schwarze 2758: r->tbl = r->last_tbl = tbl;
1.277 schwarze 2759: return ROFF_IGN;
1.251 schwarze 2760: }
2761:
2762: static enum rofferr
2763: roff_brp(ROFF_ARGS)
2764: {
2765:
2766: buf->buf[pos - 1] = '\0';
1.277 schwarze 2767: return ROFF_CONT;
1.92 schwarze 2768: }
2769:
1.105 kristaps 2770: static enum rofferr
1.174 kristaps 2771: roff_cc(ROFF_ARGS)
2772: {
2773: const char *p;
2774:
1.238 schwarze 2775: p = buf->buf + pos;
1.174 kristaps 2776:
1.238 schwarze 2777: if (*p == '\0' || (r->control = *p++) == '.')
1.174 kristaps 2778: r->control = 0;
2779:
1.238 schwarze 2780: if (*p != '\0')
1.260 schwarze 2781: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2782: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 2783:
1.277 schwarze 2784: return ROFF_IGN;
1.174 kristaps 2785: }
2786:
2787: static enum rofferr
1.164 kristaps 2788: roff_tr(ROFF_ARGS)
2789: {
2790: const char *p, *first, *second;
2791: size_t fsz, ssz;
2792: enum mandoc_esc esc;
2793:
1.238 schwarze 2794: p = buf->buf + pos;
1.164 kristaps 2795:
1.238 schwarze 2796: if (*p == '\0') {
1.260 schwarze 2797: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 2798: return ROFF_IGN;
1.164 kristaps 2799: }
2800:
1.238 schwarze 2801: while (*p != '\0') {
1.164 kristaps 2802: fsz = ssz = 1;
2803:
2804: first = p++;
1.238 schwarze 2805: if (*first == '\\') {
1.164 kristaps 2806: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2807: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2808: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2809: ln, (int)(p - buf->buf), first);
1.277 schwarze 2810: return ROFF_IGN;
1.164 kristaps 2811: }
2812: fsz = (size_t)(p - first);
2813: }
2814:
2815: second = p++;
1.238 schwarze 2816: if (*second == '\\') {
1.164 kristaps 2817: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2818: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2819: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2820: ln, (int)(p - buf->buf), second);
1.277 schwarze 2821: return ROFF_IGN;
1.164 kristaps 2822: }
2823: ssz = (size_t)(p - second);
1.238 schwarze 2824: } else if (*second == '\0') {
1.260 schwarze 2825: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2826: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 2827: second = " ";
1.165 kristaps 2828: p--;
1.164 kristaps 2829: }
2830:
1.167 kristaps 2831: if (fsz > 1) {
1.207 schwarze 2832: roff_setstrn(&r->xmbtab, first, fsz,
2833: second, ssz, 0);
1.167 kristaps 2834: continue;
2835: }
2836:
1.238 schwarze 2837: if (r->xtab == NULL)
1.207 schwarze 2838: r->xtab = mandoc_calloc(128,
2839: sizeof(struct roffstr));
1.167 kristaps 2840:
2841: free(r->xtab[(int)*first].p);
2842: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
2843: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 2844: }
2845:
1.277 schwarze 2846: return ROFF_IGN;
1.164 kristaps 2847: }
2848:
2849: static enum rofferr
1.105 kristaps 2850: roff_so(ROFF_ARGS)
2851: {
1.249 schwarze 2852: char *name, *cp;
1.105 kristaps 2853:
1.238 schwarze 2854: name = buf->buf + pos;
1.224 schwarze 2855: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 2856:
2857: /*
2858: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
2859: * opening anything that's not in our cwd or anything beneath
2860: * it. Thus, explicitly disallow traversing up the file-system
2861: * or using absolute paths.
2862: */
2863:
1.238 schwarze 2864: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 2865: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
2866: ".so %s", name);
1.249 schwarze 2867: buf->sz = mandoc_asprintf(&cp,
2868: ".sp\nSee the file %s.\n.sp", name) + 1;
2869: free(buf->buf);
2870: buf->buf = cp;
2871: *offs = 0;
1.277 schwarze 2872: return ROFF_REPARSE;
1.105 kristaps 2873: }
2874:
2875: *offs = pos;
1.277 schwarze 2876: return ROFF_SO;
1.105 kristaps 2877: }
1.92 schwarze 2878:
1.266 schwarze 2879: /* --- user defined strings and macros ------------------------------------ */
2880:
1.106 kristaps 2881: static enum rofferr
2882: roff_userdef(ROFF_ARGS)
1.99 kristaps 2883: {
1.263 schwarze 2884: const char *arg[9], *ap;
1.106 kristaps 2885: char *cp, *n1, *n2;
1.292 schwarze 2886: int expand_count, i, ib, ie;
1.263 schwarze 2887: size_t asz, rsz;
1.106 kristaps 2888:
2889: /*
2890: * Collect pointers to macro argument strings
1.188 schwarze 2891: * and NUL-terminate them.
1.106 kristaps 2892: */
1.263 schwarze 2893:
1.273 schwarze 2894: r->argc = 0;
1.238 schwarze 2895: cp = buf->buf + pos;
1.273 schwarze 2896: for (i = 0; i < 9; i++) {
2897: if (*cp == '\0')
2898: arg[i] = "";
2899: else {
2900: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
2901: r->argc = i + 1;
2902: }
2903: }
1.99 kristaps 2904:
1.106 kristaps 2905: /*
2906: * Expand macro arguments.
1.99 kristaps 2907: */
1.263 schwarze 2908:
2909: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 2910: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 2911: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 2912: expand_count = 0;
1.263 schwarze 2913: while (*cp != '\0') {
2914:
2915: /* Scan ahead for the next argument invocation. */
2916:
2917: if (*cp++ != '\\')
2918: continue;
2919: if (*cp++ != '$')
2920: continue;
1.274 schwarze 2921: if (*cp == '*') { /* \\$* inserts all arguments */
2922: ib = 0;
2923: ie = r->argc - 1;
2924: } else { /* \\$1 .. \\$9 insert one argument */
2925: ib = ie = *cp - '1';
2926: if (ib < 0 || ib > 8)
2927: continue;
2928: }
1.263 schwarze 2929: cp -= 2;
1.292 schwarze 2930:
2931: /*
2932: * Prevent infinite recursion.
2933: */
2934:
2935: if (cp >= n2)
2936: expand_count = 1;
2937: else if (++expand_count > EXPAND_LIMIT) {
2938: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
2939: ln, (int)(cp - n1), NULL);
1.293 schwarze 2940: free(buf->buf);
2941: buf->buf = n1;
1.292 schwarze 2942: return ROFF_IGN;
2943: }
1.263 schwarze 2944:
2945: /*
2946: * Determine the size of the expanded argument,
2947: * taking escaping of quotes into account.
2948: */
2949:
1.274 schwarze 2950: asz = ie > ib ? ie - ib : 0; /* for blanks */
2951: for (i = ib; i <= ie; i++) {
2952: for (ap = arg[i]; *ap != '\0'; ap++) {
2953: asz++;
2954: if (*ap == '"')
2955: asz += 3;
2956: }
1.263 schwarze 2957: }
2958: if (asz != 3) {
2959:
2960: /*
2961: * Determine the size of the rest of the
2962: * unexpanded macro, including the NUL.
2963: */
2964:
2965: rsz = buf->sz - (cp - n1) - 3;
2966:
2967: /*
2968: * When shrinking, move before
2969: * releasing the storage.
2970: */
2971:
2972: if (asz < 3)
2973: memmove(cp + asz, cp + 3, rsz);
2974:
2975: /*
2976: * Resize the storage for the macro
2977: * and readjust the parse pointer.
2978: */
2979:
2980: buf->sz += asz - 3;
2981: n2 = mandoc_realloc(n1, buf->sz);
2982: cp = n2 + (cp - n1);
2983: n1 = n2;
2984:
2985: /*
2986: * When growing, make room
2987: * for the expanded argument.
2988: */
2989:
2990: if (asz > 3)
2991: memmove(cp + asz, cp + 3, rsz);
2992: }
2993:
2994: /* Copy the expanded argument, escaping quotes. */
2995:
2996: n2 = cp;
1.274 schwarze 2997: for (i = ib; i <= ie; i++) {
2998: for (ap = arg[i]; *ap != '\0'; ap++) {
2999: if (*ap == '"') {
3000: memcpy(n2, "\\(dq", 4);
3001: n2 += 4;
3002: } else
3003: *n2++ = *ap;
3004: }
3005: if (i < ie)
3006: *n2++ = ' ';
1.106 kristaps 3007: }
1.99 kristaps 3008: }
3009:
1.106 kristaps 3010: /*
3011: * Replace the macro invocation
3012: * by the expanded macro.
3013: */
1.263 schwarze 3014:
1.238 schwarze 3015: free(buf->buf);
3016: buf->buf = n1;
1.248 schwarze 3017: *offs = 0;
1.106 kristaps 3018:
1.277 schwarze 3019: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3020: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3021: }
1.121 schwarze 3022:
1.212 schwarze 3023: static size_t
1.121 schwarze 3024: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3025: {
3026: char *name, *cp;
1.212 schwarze 3027: size_t namesz;
1.121 schwarze 3028:
3029: name = *cpp;
3030: if ('\0' == *name)
1.277 schwarze 3031: return 0;
1.121 schwarze 3032:
1.212 schwarze 3033: /* Read until end of name and terminate it with NUL. */
3034: for (cp = name; 1; cp++) {
3035: if ('\0' == *cp || ' ' == *cp) {
3036: namesz = cp - name;
3037: break;
3038: }
1.121 schwarze 3039: if ('\\' != *cp)
3040: continue;
1.215 schwarze 3041: namesz = cp - name;
3042: if ('{' == cp[1] || '}' == cp[1])
3043: break;
1.121 schwarze 3044: cp++;
3045: if ('\\' == *cp)
3046: continue;
1.224 schwarze 3047: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3048: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3049: mandoc_escape((const char **)&cp, NULL, NULL);
3050: break;
1.121 schwarze 3051: }
3052:
3053: /* Read past spaces. */
3054: while (' ' == *cp)
3055: cp++;
3056:
3057: *cpp = cp;
1.277 schwarze 3058: return namesz;
1.121 schwarze 3059: }
3060:
1.106 kristaps 3061: /*
3062: * Store *string into the user-defined string called *name.
3063: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3064: * append == 0: replace mode
3065: * append == 1: single-line append mode
3066: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3067: */
1.94 kristaps 3068: static void
1.106 kristaps 3069: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3070: int append)
1.92 schwarze 3071: {
1.164 kristaps 3072:
3073: roff_setstrn(&r->strtab, name, strlen(name), string,
1.207 schwarze 3074: string ? strlen(string) : 0, append);
1.164 kristaps 3075: }
3076:
3077: static void
1.166 kristaps 3078: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3079: const char *string, size_t stringsz, int append)
1.164 kristaps 3080: {
1.166 kristaps 3081: struct roffkv *n;
1.164 kristaps 3082: char *c;
3083: int i;
3084: size_t oldch, newch;
1.92 schwarze 3085:
1.106 kristaps 3086: /* Search for an existing string with the same name. */
1.164 kristaps 3087: n = *r;
3088:
1.211 schwarze 3089: while (n && (namesz != n->key.sz ||
3090: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3091: n = n->next;
1.94 kristaps 3092:
3093: if (NULL == n) {
1.106 kristaps 3094: /* Create a new string table entry. */
1.166 kristaps 3095: n = mandoc_malloc(sizeof(struct roffkv));
3096: n->key.p = mandoc_strndup(name, namesz);
3097: n->key.sz = namesz;
3098: n->val.p = NULL;
3099: n->val.sz = 0;
1.164 kristaps 3100: n->next = *r;
3101: *r = n;
1.193 schwarze 3102: } else if (0 == append) {
1.166 kristaps 3103: free(n->val.p);
3104: n->val.p = NULL;
3105: n->val.sz = 0;
1.106 kristaps 3106: }
3107:
3108: if (NULL == string)
3109: return;
3110:
3111: /*
3112: * One additional byte for the '\n' in multiline mode,
3113: * and one for the terminating '\0'.
3114: */
1.193 schwarze 3115: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3116:
1.166 kristaps 3117: if (NULL == n->val.p) {
3118: n->val.p = mandoc_malloc(newch);
3119: *n->val.p = '\0';
1.106 kristaps 3120: oldch = 0;
3121: } else {
1.166 kristaps 3122: oldch = n->val.sz;
3123: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3124: }
3125:
3126: /* Skip existing content in the destination buffer. */
1.166 kristaps 3127: c = n->val.p + (int)oldch;
1.106 kristaps 3128:
3129: /* Append new content to the destination buffer. */
1.164 kristaps 3130: i = 0;
3131: while (i < (int)stringsz) {
1.106 kristaps 3132: /*
3133: * Rudimentary roff copy mode:
3134: * Handle escaped backslashes.
3135: */
1.164 kristaps 3136: if ('\\' == string[i] && '\\' == string[i + 1])
3137: i++;
3138: *c++ = string[i++];
1.106 kristaps 3139: }
1.94 kristaps 3140:
1.106 kristaps 3141: /* Append terminating bytes. */
1.193 schwarze 3142: if (1 < append)
1.106 kristaps 3143: *c++ = '\n';
1.163 kristaps 3144:
1.106 kristaps 3145: *c = '\0';
1.166 kristaps 3146: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3147: }
3148:
1.94 kristaps 3149: static const char *
3150: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.92 schwarze 3151: {
1.166 kristaps 3152: const struct roffkv *n;
1.191 schwarze 3153: int i;
1.92 schwarze 3154:
1.164 kristaps 3155: for (n = r->strtab; n; n = n->next)
1.207 schwarze 3156: if (0 == strncmp(name, n->key.p, len) &&
3157: '\0' == n->key.p[(int)len])
1.277 schwarze 3158: return n->val.p;
1.191 schwarze 3159:
3160: for (i = 0; i < PREDEFS_MAX; i++)
3161: if (0 == strncmp(name, predefs[i].name, len) &&
3162: '\0' == predefs[i].name[(int)len])
1.277 schwarze 3163: return predefs[i].str;
1.94 kristaps 3164:
1.277 schwarze 3165: return NULL;
1.92 schwarze 3166: }
3167:
1.94 kristaps 3168: static void
1.167 kristaps 3169: roff_freestr(struct roffkv *r)
1.92 schwarze 3170: {
1.166 kristaps 3171: struct roffkv *n, *nn;
1.92 schwarze 3172:
1.167 kristaps 3173: for (n = r; n; n = nn) {
1.166 kristaps 3174: free(n->key.p);
3175: free(n->val.p);
1.92 schwarze 3176: nn = n->next;
3177: free(n);
3178: }
1.114 kristaps 3179: }
1.266 schwarze 3180:
3181: /* --- accessors and utility functions ------------------------------------ */
1.114 kristaps 3182:
3183: const struct tbl_span *
3184: roff_span(const struct roff *r)
3185: {
1.207 schwarze 3186:
1.277 schwarze 3187: return r->tbl ? tbl_span(r->tbl) : NULL;
1.125 kristaps 3188: }
3189:
3190: const struct eqn *
3191: roff_eqn(const struct roff *r)
3192: {
1.207 schwarze 3193:
1.277 schwarze 3194: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.164 kristaps 3195: }
3196:
3197: /*
3198: * Duplicate an input string, making the appropriate character
3199: * conversations (as stipulated by `tr') along the way.
3200: * Returns a heap-allocated string with all the replacements made.
3201: */
3202: char *
3203: roff_strdup(const struct roff *r, const char *p)
3204: {
1.166 kristaps 3205: const struct roffkv *cp;
1.164 kristaps 3206: char *res;
3207: const char *pp;
3208: size_t ssz, sz;
3209: enum mandoc_esc esc;
3210:
1.167 kristaps 3211: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3212: return mandoc_strdup(p);
1.164 kristaps 3213: else if ('\0' == *p)
1.277 schwarze 3214: return mandoc_strdup("");
1.164 kristaps 3215:
3216: /*
3217: * Step through each character looking for term matches
3218: * (remember that a `tr' can be invoked with an escape, which is
3219: * a glyph but the escape is multi-character).
3220: * We only do this if the character hash has been initialised
3221: * and the string is >0 length.
3222: */
3223:
3224: res = NULL;
3225: ssz = 0;
3226:
3227: while ('\0' != *p) {
1.289 schwarze 3228: assert((unsigned int)*p < 128);
3229: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3230: sz = r->xtab[(int)*p].sz;
3231: res = mandoc_realloc(res, ssz + sz + 1);
3232: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3233: ssz += sz;
3234: p++;
3235: continue;
3236: } else if ('\\' != *p) {
3237: res = mandoc_realloc(res, ssz + 2);
3238: res[ssz++] = *p++;
3239: continue;
3240: }
3241:
1.164 kristaps 3242: /* Search for term matches. */
1.167 kristaps 3243: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3244: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3245: break;
3246:
3247: if (NULL != cp) {
3248: /*
3249: * A match has been found.
3250: * Append the match to the array and move
3251: * forward by its keysize.
3252: */
1.207 schwarze 3253: res = mandoc_realloc(res,
3254: ssz + cp->val.sz + 1);
1.166 kristaps 3255: memcpy(res + ssz, cp->val.p, cp->val.sz);
3256: ssz += cp->val.sz;
3257: p += (int)cp->key.sz;
1.164 kristaps 3258: continue;
3259: }
3260:
1.167 kristaps 3261: /*
3262: * Handle escapes carefully: we need to copy
3263: * over just the escape itself, or else we might
3264: * do replacements within the escape itself.
3265: * Make sure to pass along the bogus string.
3266: */
3267: pp = p++;
3268: esc = mandoc_escape(&p, NULL, NULL);
3269: if (ESCAPE_ERROR == esc) {
3270: sz = strlen(pp);
1.164 kristaps 3271: res = mandoc_realloc(res, ssz + sz + 1);
3272: memcpy(res + ssz, pp, sz);
1.167 kristaps 3273: break;
1.164 kristaps 3274: }
1.207 schwarze 3275: /*
3276: * We bail out on bad escapes.
1.167 kristaps 3277: * No need to warn: we already did so when
3278: * roff_res() was called.
3279: */
3280: sz = (int)(p - pp);
3281: res = mandoc_realloc(res, ssz + sz + 1);
3282: memcpy(res + ssz, pp, sz);
3283: ssz += sz;
1.164 kristaps 3284: }
3285:
3286: res[(int)ssz] = '\0';
1.277 schwarze 3287: return res;
1.227 schwarze 3288: }
3289:
3290: int
3291: roff_getformat(const struct roff *r)
3292: {
3293:
1.277 schwarze 3294: return r->format;
1.174 kristaps 3295: }
3296:
3297: /*
1.207 schwarze 3298: * Find out whether a line is a macro line or not.
1.174 kristaps 3299: * If it is, adjust the current position and return one; if it isn't,
3300: * return zero and don't change the current position.
3301: * If the control character has been set with `.cc', then let that grain
3302: * precedence.
3303: * This is slighly contrary to groff, where using the non-breaking
3304: * control character when `cc' has been invoked will cause the
3305: * non-breaking macro contents to be printed verbatim.
3306: */
3307: int
3308: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3309: {
3310: int pos;
3311:
3312: pos = *ppos;
3313:
3314: if (0 != r->control && cp[pos] == r->control)
3315: pos++;
3316: else if (0 != r->control)
1.277 schwarze 3317: return 0;
1.174 kristaps 3318: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3319: pos += 2;
3320: else if ('.' == cp[pos] || '\'' == cp[pos])
3321: pos++;
3322: else
1.277 schwarze 3323: return 0;
1.174 kristaps 3324:
3325: while (' ' == cp[pos] || '\t' == cp[pos])
3326: pos++;
3327:
3328: *ppos = pos;
1.277 schwarze 3329: return 1;
1.74 kristaps 3330: }
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