Annotation of mandoc/roff.c, Revision 1.402
1.402 ! schwarze 1: /* $Id: roff.c,v 1.401 2025/01/03 16:34:12 schwarze Exp $ */
1.1 kristaps 2: /*
1.401 schwarze 3: * Copyright (c) 2010-2015, 2017-2024 Ingo Schwarze <schwarze@openbsd.org>
1.267 schwarze 4: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
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.
1.372 schwarze 17: *
18: * Implementation of the roff(7) parser for mandoc(1).
1.1 kristaps 19: */
1.66 kristaps 20: #include "config.h"
1.225 schwarze 21:
22: #include <sys/types.h>
1.30 kristaps 23:
1.67 kristaps 24: #include <assert.h>
1.85 kristaps 25: #include <ctype.h>
1.245 schwarze 26: #include <limits.h>
1.295 schwarze 27: #include <stddef.h>
28: #include <stdint.h>
1.178 schwarze 29: #include <stdio.h>
1.1 kristaps 30: #include <stdlib.h>
1.67 kristaps 31: #include <string.h>
1.1 kristaps 32:
1.201 schwarze 33: #include "mandoc_aux.h"
1.295 schwarze 34: #include "mandoc_ohash.h"
1.345 schwarze 35: #include "mandoc.h"
1.265 schwarze 36: #include "roff.h"
1.349 schwarze 37: #include "mandoc_parse.h"
1.226 schwarze 38: #include "libmandoc.h"
1.266 schwarze 39: #include "roff_int.h"
1.346 schwarze 40: #include "tbl_parse.h"
1.347 schwarze 41: #include "eqn_parse.h"
1.82 kristaps 42:
1.170 schwarze 43: /* Maximum number of string expansions per line, to break infinite loops. */
44: #define EXPAND_LIMIT 1000
45:
1.315 schwarze 46: /* Types of definitions of macros and strings. */
47: #define ROFFDEF_USER (1 << 1) /* User-defined. */
48: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
49: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
50: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
51: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
52: ROFFDEF_REN | ROFFDEF_STD)
1.325 schwarze 53: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 54:
1.266 schwarze 55: /* --- data types --------------------------------------------------------- */
56:
1.147 kristaps 57: /*
1.167 kristaps 58: * An incredibly-simple string buffer.
59: */
1.94 kristaps 60: struct roffstr {
1.167 kristaps 61: char *p; /* nil-terminated buffer */
62: size_t sz; /* saved strlen(p) */
1.166 kristaps 63: };
64:
65: /*
1.167 kristaps 66: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 67: */
68: struct roffkv {
69: struct roffstr key;
70: struct roffstr val;
71: struct roffkv *next; /* next in list */
1.94 kristaps 72: };
73:
1.180 schwarze 74: /*
75: * A single number register as part of a singly-linked list.
76: */
77: struct roffreg {
78: struct roffstr key;
1.181 schwarze 79: int val;
1.327 schwarze 80: int step;
1.180 schwarze 81: struct roffreg *next;
82: };
83:
1.295 schwarze 84: /*
85: * Association of request and macro names with token IDs.
86: */
87: struct roffreq {
88: enum roff_tok tok;
89: char name[];
90: };
91:
1.339 schwarze 92: /*
93: * A macro processing context.
94: * More than one is needed when macro calls are nested.
95: */
96: struct mctx {
97: char **argv;
98: int argc;
99: int argsz;
100: };
101:
1.67 kristaps 102: struct roff {
1.296 schwarze 103: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 104: struct roffnode *last; /* leaf of stack */
1.339 schwarze 105: struct mctx *mstack; /* stack of macro contexts */
1.223 schwarze 106: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 107: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 108: struct roffreg *regtab; /* number registers */
1.166 kristaps 109: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 110: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 111: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
112: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 113: const char *current_string; /* value of last called user macro */
1.118 kristaps 114: struct tbl_node *first_tbl; /* first table parsed */
115: struct tbl_node *last_tbl; /* last table parsed */
116: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 117: struct eqn_node *last_eqn; /* equation parser */
118: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 119: int eqn_inline; /* current equation is inline */
1.223 schwarze 120: int options; /* parse options */
1.339 schwarze 121: int mstacksz; /* current size of mstack */
122: int mstackpos; /* position in mstack */
1.223 schwarze 123: int rstacksz; /* current size limit of rstack */
124: int rstackpos; /* position in rstack */
1.227 schwarze 125: int format; /* current file in mdoc or man format */
1.223 schwarze 126: char control; /* control character */
1.303 schwarze 127: char escape; /* escape character */
1.79 kristaps 128: };
129:
1.364 schwarze 130: /*
131: * A macro definition, condition, or ignored block.
132: */
1.67 kristaps 133: struct roffnode {
1.294 schwarze 134: enum roff_tok tok; /* type of node */
1.67 kristaps 135: struct roffnode *parent; /* up one in stack */
136: int line; /* parse line */
137: int col; /* parse col */
1.106 kristaps 138: char *name; /* node name, e.g. macro name */
1.364 schwarze 139: char *end; /* custom end macro of the block */
140: int endspan; /* scope to: 1=eol 2=next line -1=\} */
141: int rule; /* content is: 1=evaluated 0=skipped */
1.67 kristaps 142: };
143:
144: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 145: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 146: struct buf *buf, /* input buffer */ \
1.67 kristaps 147: int ln, /* parse line */ \
1.75 kristaps 148: int ppos, /* original pos in buffer */ \
149: int pos, /* current pos in buffer */ \
1.74 kristaps 150: int *offs /* reset offset of buffer data */
1.67 kristaps 151:
1.340 schwarze 152: typedef int (*roffproc)(ROFF_ARGS);
1.67 kristaps 153:
154: struct roffmac {
1.79 kristaps 155: roffproc proc; /* process new macro */
156: roffproc text; /* process as child text of macro */
157: roffproc sub; /* process as child of macro */
158: int flags;
159: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 160: };
161:
1.141 kristaps 162: struct predef {
163: const char *name; /* predefined input name */
164: const char *str; /* replacement symbol */
165: };
166:
167: #define PREDEF(__name, __str) \
168: { (__name), (__str) },
169:
1.266 schwarze 170: /* --- function prototypes ------------------------------------------------ */
171:
1.340 schwarze 172: static int roffnode_cleanscope(struct roff *);
173: static int roffnode_pop(struct roff *);
1.294 schwarze 174: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 175: const char *, int, int);
1.346 schwarze 176: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.340 schwarze 177: static int roff_als(ROFF_ARGS);
178: static int roff_block(ROFF_ARGS);
179: static int roff_block_text(ROFF_ARGS);
180: static int roff_block_sub(ROFF_ARGS);
1.364 schwarze 181: static int roff_break(ROFF_ARGS);
1.340 schwarze 182: static int roff_cblock(ROFF_ARGS);
183: static int roff_cc(ROFF_ARGS);
184: static int roff_ccond(struct roff *, int, int);
1.341 schwarze 185: static int roff_char(ROFF_ARGS);
1.340 schwarze 186: static int roff_cond(ROFF_ARGS);
1.375 schwarze 187: static int roff_cond_checkend(ROFF_ARGS);
1.340 schwarze 188: static int roff_cond_text(ROFF_ARGS);
189: static int roff_cond_sub(ROFF_ARGS);
190: static int roff_ds(ROFF_ARGS);
191: static int roff_ec(ROFF_ARGS);
192: static int roff_eo(ROFF_ARGS);
193: static int roff_eqndelim(struct roff *, struct buf *, int);
1.372 schwarze 194: static int roff_evalcond(struct roff *, int, char *, int *);
1.402 ! schwarze 195: static int roff_evalnum(int, const char *, int *, int *, int);
! 196: static int roff_evalpar(int, const char *, int *, int *, int);
1.198 schwarze 197: static int roff_evalstrcond(const char *, int *);
1.355 schwarze 198: static int roff_expand(struct roff *, struct buf *,
199: int, int, char);
1.388 schwarze 200: static void roff_expand_patch(struct buf *, int,
201: const char *, int);
1.155 kristaps 202: static void roff_free1(struct roff *);
1.180 schwarze 203: static void roff_freereg(struct roffreg *);
1.167 kristaps 204: static void roff_freestr(struct roffkv *);
1.402 ! schwarze 205: static size_t roff_getname(char **, int, int);
1.261 schwarze 206: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 207: static int roff_getop(const char *, int *, char *);
1.327 schwarze 208: static int roff_getregn(struct roff *,
209: const char *, size_t, char);
1.273 schwarze 210: static int roff_getregro(const struct roff *,
211: const char *name);
1.325 schwarze 212: static const char *roff_getstrn(struct roff *,
1.315 schwarze 213: const char *, size_t, int *);
1.271 schwarze 214: static int roff_hasregn(const struct roff *,
215: const char *, size_t);
1.340 schwarze 216: static int roff_insec(ROFF_ARGS);
217: static int roff_it(ROFF_ARGS);
218: static int roff_line_ignore(ROFF_ARGS);
1.265 schwarze 219: static void roff_man_alloc1(struct roff_man *);
220: static void roff_man_free1(struct roff_man *);
1.340 schwarze 221: static int roff_manyarg(ROFF_ARGS);
1.384 schwarze 222: static int roff_mc(ROFF_ARGS);
1.358 schwarze 223: static int roff_noarg(ROFF_ARGS);
1.340 schwarze 224: static int roff_nop(ROFF_ARGS);
225: static int roff_nr(ROFF_ARGS);
226: static int roff_onearg(ROFF_ARGS);
1.294 schwarze 227: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 228: int, int);
1.387 schwarze 229: static int roff_parse_comment(struct roff *, struct buf *,
230: int, int, char);
1.340 schwarze 231: static int roff_parsetext(struct roff *, struct buf *,
1.305 schwarze 232: int, int *);
1.340 schwarze 233: static int roff_renamed(ROFF_ARGS);
1.386 schwarze 234: static int roff_req_or_macro(ROFF_ARGS);
1.340 schwarze 235: static int roff_return(ROFF_ARGS);
236: static int roff_rm(ROFF_ARGS);
237: static int roff_rn(ROFF_ARGS);
238: static int roff_rr(ROFF_ARGS);
1.326 schwarze 239: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 240: size_t, int, char, int);
1.94 kristaps 241: static void roff_setstr(struct roff *,
1.106 kristaps 242: const char *, const char *, int);
1.207 schwarze 243: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 244: size_t, const char *, size_t, int);
1.340 schwarze 245: static int roff_shift(ROFF_ARGS);
246: static int roff_so(ROFF_ARGS);
247: static int roff_tr(ROFF_ARGS);
248: static int roff_Dd(ROFF_ARGS);
249: static int roff_TE(ROFF_ARGS);
250: static int roff_TS(ROFF_ARGS);
251: static int roff_EQ(ROFF_ARGS);
252: static int roff_EN(ROFF_ARGS);
253: static int roff_T_(ROFF_ARGS);
254: static int roff_unsupp(ROFF_ARGS);
255: static int roff_userdef(ROFF_ARGS);
1.67 kristaps 256:
1.266 schwarze 257: /* --- constant data ------------------------------------------------------ */
258:
1.261 schwarze 259: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
260: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
261:
1.294 schwarze 262: const char *__roff_name[MAN_MAX + 1] = {
1.358 schwarze 263: "br", "ce", "fi", "ft",
264: "ll", "mc", "nf",
265: "po", "rj", "sp",
1.312 schwarze 266: "ta", "ti", NULL,
1.294 schwarze 267: "ab", "ad", "af", "aln",
268: "als", "am", "am1", "ami",
269: "ami1", "as", "as1", "asciify",
270: "backtrace", "bd", "bleedat", "blm",
271: "box", "boxa", "bp", "BP",
272: "break", "breakchar", "brnl", "brp",
1.305 schwarze 273: "brpnl", "c2", "cc",
1.294 schwarze 274: "cf", "cflags", "ch", "char",
275: "chop", "class", "close", "CL",
276: "color", "composite", "continue", "cp",
277: "cropat", "cs", "cu", "da",
278: "dch", "Dd", "de", "de1",
279: "defcolor", "dei", "dei1", "device",
280: "devicem", "di", "do", "ds",
281: "ds1", "dwh", "dt", "ec",
282: "ecr", "ecs", "el", "em",
283: "EN", "eo", "EP", "EQ",
284: "errprint", "ev", "evc", "ex",
285: "fallback", "fam", "fc", "fchar",
286: "fcolor", "fdeferlig", "feature", "fkern",
287: "fl", "flig", "fp", "fps",
288: "fschar", "fspacewidth", "fspecial", "ftr",
289: "fzoom", "gcolor", "hc", "hcode",
290: "hidechar", "hla", "hlm", "hpf",
291: "hpfa", "hpfcode", "hw", "hy",
292: "hylang", "hylen", "hym", "hypp",
293: "hys", "ie", "if", "ig",
294: "index", "it", "itc", "IX",
295: "kern", "kernafter", "kernbefore", "kernpair",
296: "lc", "lc_ctype", "lds", "length",
297: "letadj", "lf", "lg", "lhang",
298: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 299: "ls", "lsm", "lt",
1.294 schwarze 300: "mediasize", "minss", "mk", "mso",
301: "na", "ne", "nh", "nhychar",
302: "nm", "nn", "nop", "nr",
303: "nrf", "nroff", "ns", "nx",
304: "open", "opena", "os", "output",
305: "padj", "papersize", "pc", "pev",
306: "pi", "PI", "pl", "pm",
1.312 schwarze 307: "pn", "pnr", "ps",
1.294 schwarze 308: "psbb", "pshape", "pso", "ptr",
309: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 310: "return", "rfschar", "rhang",
1.294 schwarze 311: "rm", "rn", "rnn", "rr",
312: "rs", "rt", "schar", "sentchar",
313: "shc", "shift", "sizes", "so",
314: "spacewidth", "special", "spreadwarn", "ss",
315: "sty", "substring", "sv", "sy",
1.300 schwarze 316: "T&", "tc", "TE",
1.301 schwarze 317: "TH", "tkf", "tl",
1.294 schwarze 318: "tm", "tm1", "tmc", "tr",
319: "track", "transchar", "trf", "trimat",
320: "trin", "trnt", "troff", "TS",
321: "uf", "ul", "unformat", "unwatch",
322: "unwatchn", "vpt", "vs", "warn",
323: "warnscale", "watch", "watchlength", "watchn",
324: "wh", "while", "write", "writec",
325: "writem", "xflag", ".", NULL,
1.306 schwarze 326: NULL, "text",
1.294 schwarze 327: "Dd", "Dt", "Os", "Sh",
328: "Ss", "Pp", "D1", "Dl",
329: "Bd", "Ed", "Bl", "El",
330: "It", "Ad", "An", "Ap",
331: "Ar", "Cd", "Cm", "Dv",
332: "Er", "Ev", "Ex", "Fa",
333: "Fd", "Fl", "Fn", "Ft",
334: "Ic", "In", "Li", "Nd",
335: "Nm", "Op", "Ot", "Pa",
336: "Rv", "St", "Va", "Vt",
337: "Xr", "%A", "%B", "%D",
338: "%I", "%J", "%N", "%O",
339: "%P", "%R", "%T", "%V",
340: "Ac", "Ao", "Aq", "At",
341: "Bc", "Bf", "Bo", "Bq",
342: "Bsx", "Bx", "Db", "Dc",
343: "Do", "Dq", "Ec", "Ef",
344: "Em", "Eo", "Fx", "Ms",
345: "No", "Ns", "Nx", "Ox",
346: "Pc", "Pf", "Po", "Pq",
347: "Qc", "Ql", "Qo", "Qq",
348: "Re", "Rs", "Sc", "So",
349: "Sq", "Sm", "Sx", "Sy",
350: "Tn", "Ux", "Xc", "Xo",
351: "Fo", "Fc", "Oo", "Oc",
352: "Bk", "Ek", "Bt", "Hf",
353: "Fr", "Ud", "Lb", "Lp",
354: "Lk", "Mt", "Brq", "Bro",
355: "Brc", "%C", "Es", "En",
1.299 schwarze 356: "Dx", "%Q", "%U", "Ta",
1.369 schwarze 357: "Tg", NULL,
1.294 schwarze 358: "TH", "SH", "SS", "TP",
1.332 schwarze 359: "TQ",
1.294 schwarze 360: "LP", "PP", "P", "IP",
361: "HP", "SM", "SB", "BI",
362: "IB", "BR", "RB", "R",
363: "B", "I", "IR", "RI",
364: "RE", "RS", "DT", "UC",
1.297 schwarze 365: "PD", "AT", "in",
1.333 schwarze 366: "SY", "YS", "OP",
367: "EX", "EE", "UR",
1.400 schwarze 368: "UE", "MT", "ME", "MR",
369: NULL
1.294 schwarze 370: };
371: const char *const *roff_name = __roff_name;
372:
373: static struct roffmac roffs[TOKEN_NONE] = {
1.358 schwarze 374: { roff_noarg, NULL, NULL, 0 }, /* br */
1.305 schwarze 375: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.358 schwarze 376: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.297 schwarze 377: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 378: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.384 schwarze 379: { roff_mc, NULL, NULL, 0 }, /* mc */
1.358 schwarze 380: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.312 schwarze 381: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 382: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 383: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 384: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 385: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 386: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 387: { roff_unsupp, NULL, NULL, 0 }, /* ab */
388: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
389: { roff_line_ignore, NULL, NULL, 0 }, /* af */
390: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 391: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 392: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
393: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
394: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
395: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
396: { roff_ds, NULL, NULL, 0 }, /* as */
397: { roff_ds, NULL, NULL, 0 }, /* as1 */
398: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
399: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
400: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
401: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
402: { roff_unsupp, NULL, NULL, 0 }, /* blm */
403: { roff_unsupp, NULL, NULL, 0 }, /* box */
404: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
405: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
406: { roff_unsupp, NULL, NULL, 0 }, /* BP */
1.364 schwarze 407: { roff_break, NULL, NULL, 0 }, /* break */
1.295 schwarze 408: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
409: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.358 schwarze 410: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.295 schwarze 411: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
412: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
413: { roff_cc, NULL, NULL, 0 }, /* cc */
414: { roff_insec, NULL, NULL, 0 }, /* cf */
415: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
416: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.341 schwarze 417: { roff_char, NULL, NULL, 0 }, /* char */
1.295 schwarze 418: { roff_unsupp, NULL, NULL, 0 }, /* chop */
419: { roff_line_ignore, NULL, NULL, 0 }, /* class */
420: { roff_insec, NULL, NULL, 0 }, /* close */
421: { roff_unsupp, NULL, NULL, 0 }, /* CL */
422: { roff_line_ignore, NULL, NULL, 0 }, /* color */
423: { roff_unsupp, NULL, NULL, 0 }, /* composite */
424: { roff_unsupp, NULL, NULL, 0 }, /* continue */
425: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
426: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
427: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
428: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
429: { roff_unsupp, NULL, NULL, 0 }, /* da */
430: { roff_unsupp, NULL, NULL, 0 }, /* dch */
431: { roff_Dd, NULL, NULL, 0 }, /* Dd */
432: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
433: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
434: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
435: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
436: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
437: { roff_unsupp, NULL, NULL, 0 }, /* device */
438: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
439: { roff_unsupp, NULL, NULL, 0 }, /* di */
440: { roff_unsupp, NULL, NULL, 0 }, /* do */
441: { roff_ds, NULL, NULL, 0 }, /* ds */
442: { roff_ds, NULL, NULL, 0 }, /* ds1 */
443: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
444: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 445: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 446: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
447: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
448: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
449: { roff_unsupp, NULL, NULL, 0 }, /* em */
450: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 451: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 452: { roff_unsupp, NULL, NULL, 0 }, /* EP */
453: { roff_EQ, NULL, NULL, 0 }, /* EQ */
454: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
455: { roff_unsupp, NULL, NULL, 0 }, /* ev */
456: { roff_unsupp, NULL, NULL, 0 }, /* evc */
457: { roff_unsupp, NULL, NULL, 0 }, /* ex */
458: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
459: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
460: { roff_unsupp, NULL, NULL, 0 }, /* fc */
461: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
462: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
463: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
464: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
465: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
466: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
467: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
468: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
469: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
470: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
471: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
472: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
473: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
474: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
475: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
476: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
477: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
478: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
479: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
480: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
481: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
482: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
483: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
484: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
485: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
486: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
487: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
488: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
489: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
490: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
491: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
492: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
493: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
494: { roff_unsupp, NULL, NULL, 0 }, /* index */
495: { roff_it, NULL, NULL, 0 }, /* it */
496: { roff_unsupp, NULL, NULL, 0 }, /* itc */
497: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
498: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
499: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
500: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
501: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
502: { roff_unsupp, NULL, NULL, 0 }, /* lc */
503: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
504: { roff_unsupp, NULL, NULL, 0 }, /* lds */
505: { roff_unsupp, NULL, NULL, 0 }, /* length */
506: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
507: { roff_insec, NULL, NULL, 0 }, /* lf */
508: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
509: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
510: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
511: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
512: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
513: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
514: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
515: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
516: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
517: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
518: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
519: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
520: { roff_insec, NULL, NULL, 0 }, /* mso */
521: { roff_line_ignore, NULL, NULL, 0 }, /* na */
522: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
523: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
524: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
525: { roff_unsupp, NULL, NULL, 0 }, /* nm */
526: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 527: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 528: { roff_nr, NULL, NULL, 0 }, /* nr */
529: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
530: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
531: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
532: { roff_insec, NULL, NULL, 0 }, /* nx */
533: { roff_insec, NULL, NULL, 0 }, /* open */
534: { roff_insec, NULL, NULL, 0 }, /* opena */
535: { roff_line_ignore, NULL, NULL, 0 }, /* os */
536: { roff_unsupp, NULL, NULL, 0 }, /* output */
537: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
538: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
539: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
540: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
541: { roff_insec, NULL, NULL, 0 }, /* pi */
542: { roff_unsupp, NULL, NULL, 0 }, /* PI */
543: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
544: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
545: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
546: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
547: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
548: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
549: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
550: { roff_insec, NULL, NULL, 0 }, /* pso */
551: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
552: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
553: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
554: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
555: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 schwarze 556: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 557: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
558: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
559: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 560: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 561: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
562: { roff_rr, NULL, NULL, 0 }, /* rr */
563: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
564: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
565: { roff_unsupp, NULL, NULL, 0 }, /* schar */
566: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
567: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 schwarze 568: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 569: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
570: { roff_so, NULL, NULL, 0 }, /* so */
571: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
572: { roff_line_ignore, NULL, NULL, 0 }, /* special */
573: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
574: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
575: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
576: { roff_unsupp, NULL, NULL, 0 }, /* substring */
577: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
578: { roff_insec, NULL, NULL, 0 }, /* sy */
579: { roff_T_, NULL, NULL, 0 }, /* T& */
580: { roff_unsupp, NULL, NULL, 0 }, /* tc */
581: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 582: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 583: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
584: { roff_unsupp, NULL, NULL, 0 }, /* tl */
585: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
586: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
587: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
588: { roff_tr, NULL, NULL, 0 }, /* tr */
589: { roff_line_ignore, NULL, NULL, 0 }, /* track */
590: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
591: { roff_insec, NULL, NULL, 0 }, /* trf */
592: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
593: { roff_unsupp, NULL, NULL, 0 }, /* trin */
594: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
595: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
596: { roff_TS, NULL, NULL, 0 }, /* TS */
597: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
598: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
599: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
600: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
601: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
602: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
603: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
604: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
605: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
606: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
607: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
608: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
609: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.340 schwarze 610: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.295 schwarze 611: { roff_insec, NULL, NULL, 0 }, /* write */
612: { roff_insec, NULL, NULL, 0 }, /* writec */
613: { roff_insec, NULL, NULL, 0 }, /* writem */
614: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
615: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 616: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 617: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 618: };
619:
1.141 kristaps 620: /* Array of injected predefined strings. */
621: #define PREDEFS_MAX 38
622: static const struct predef predefs[PREDEFS_MAX] = {
623: #include "predefs.in"
624: };
625:
1.305 schwarze 626: static int roffce_lines; /* number of input lines to center */
627: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 628: static int roffit_lines; /* number of lines to delay */
629: static char *roffit_macro; /* nil-terminated macro line */
630:
1.207 schwarze 631:
1.266 schwarze 632: /* --- request table ------------------------------------------------------ */
633:
1.295 schwarze 634: struct ohash *
635: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 636: {
1.295 schwarze 637: struct ohash *htab;
638: struct roffreq *req;
639: enum roff_tok tok;
640: size_t sz;
641: unsigned int slot;
1.85 kristaps 642:
1.295 schwarze 643: htab = mandoc_malloc(sizeof(*htab));
644: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 645:
1.295 schwarze 646: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 647: if (roff_name[tok] == NULL)
648: continue;
1.295 schwarze 649: sz = strlen(roff_name[tok]);
650: req = mandoc_malloc(sizeof(*req) + sz + 1);
651: req->tok = tok;
652: memcpy(req->name, roff_name[tok], sz + 1);
653: slot = ohash_qlookup(htab, req->name);
654: ohash_insert(htab, slot, req);
1.85 kristaps 655: }
1.295 schwarze 656: return htab;
1.85 kristaps 657: }
658:
1.295 schwarze 659: void
660: roffhash_free(struct ohash *htab)
1.67 kristaps 661: {
1.295 schwarze 662: struct roffreq *req;
663: unsigned int slot;
1.67 kristaps 664:
1.295 schwarze 665: if (htab == NULL)
666: return;
667: for (req = ohash_first(htab, &slot); req != NULL;
668: req = ohash_next(htab, &slot))
669: free(req);
670: ohash_delete(htab);
671: free(htab);
672: }
673:
674: enum roff_tok
675: roffhash_find(struct ohash *htab, const char *name, size_t sz)
676: {
677: struct roffreq *req;
678: const char *end;
679:
680: if (sz) {
681: end = name + sz;
682: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
683: } else
684: req = ohash_find(htab, ohash_qlookup(htab, name));
685: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 686: }
687:
1.266 schwarze 688: /* --- stack of request blocks -------------------------------------------- */
689:
1.67 kristaps 690: /*
691: * Pop the current node off of the stack of roff instructions currently
1.364 schwarze 692: * pending. Return 1 if it is a loop or 0 otherwise.
1.67 kristaps 693: */
1.340 schwarze 694: static int
1.67 kristaps 695: roffnode_pop(struct roff *r)
696: {
697: struct roffnode *p;
1.340 schwarze 698: int inloop;
1.67 kristaps 699:
1.207 schwarze 700: p = r->last;
1.340 schwarze 701: inloop = p->tok == ROFF_while;
702: r->last = p->parent;
1.106 kristaps 703: free(p->name);
704: free(p->end);
1.67 kristaps 705: free(p);
1.340 schwarze 706: return inloop;
1.67 kristaps 707: }
708:
709: /*
710: * Push a roff node onto the instruction stack. This must later be
711: * removed with roffnode_pop().
712: */
1.98 schwarze 713: static void
1.294 schwarze 714: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 715: int line, int col)
1.67 kristaps 716: {
717: struct roffnode *p;
718:
1.98 schwarze 719: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 720: p->tok = tok;
1.106 kristaps 721: if (name)
722: p->name = mandoc_strdup(name);
1.67 kristaps 723: p->parent = r->last;
724: p->line = line;
725: p->col = col;
1.198 schwarze 726: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 727:
728: r->last = p;
729: }
730:
1.266 schwarze 731: /* --- roff parser state data management ---------------------------------- */
732:
1.67 kristaps 733: static void
734: roff_free1(struct roff *r)
735: {
1.167 kristaps 736: int i;
1.67 kristaps 737:
1.346 schwarze 738: tbl_free(r->first_tbl);
1.113 kristaps 739: r->first_tbl = r->last_tbl = r->tbl = NULL;
740:
1.347 schwarze 741: eqn_free(r->last_eqn);
1.319 schwarze 742: r->last_eqn = r->eqn = NULL;
1.125 kristaps 743:
1.339 schwarze 744: while (r->mstackpos >= 0)
745: roff_userret(r);
746:
1.67 kristaps 747: while (r->last)
748: roffnode_pop(r);
1.109 kristaps 749:
1.223 schwarze 750: free (r->rstack);
751: r->rstack = NULL;
752: r->rstacksz = 0;
753: r->rstackpos = -1;
754:
755: roff_freereg(r->regtab);
756: r->regtab = NULL;
757:
1.167 kristaps 758: roff_freestr(r->strtab);
1.306 schwarze 759: roff_freestr(r->rentab);
1.167 kristaps 760: roff_freestr(r->xmbtab);
1.306 schwarze 761: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 762:
763: if (r->xtab)
764: for (i = 0; i < 128; i++)
765: free(r->xtab[i].p);
766: free(r->xtab);
767: r->xtab = NULL;
1.67 kristaps 768: }
769:
770: void
771: roff_reset(struct roff *r)
772: {
773: roff_free1(r);
1.367 schwarze 774: r->options |= MPARSE_COMMENT;
1.227 schwarze 775: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 776: r->control = '\0';
777: r->escape = '\\';
1.307 schwarze 778: roffce_lines = 0;
779: roffce_node = NULL;
780: roffit_lines = 0;
781: roffit_macro = NULL;
1.67 kristaps 782: }
783:
784: void
785: roff_free(struct roff *r)
786: {
1.366 schwarze 787: int i;
1.339 schwarze 788:
1.67 kristaps 789: roff_free1(r);
1.339 schwarze 790: for (i = 0; i < r->mstacksz; i++)
791: free(r->mstack[i].argv);
792: free(r->mstack);
1.295 schwarze 793: roffhash_free(r->reqtab);
1.67 kristaps 794: free(r);
795: }
796:
797: struct roff *
1.351 schwarze 798: roff_alloc(int options)
1.67 kristaps 799: {
800: struct roff *r;
801:
1.98 schwarze 802: r = mandoc_calloc(1, sizeof(struct roff));
1.328 schwarze 803: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.367 schwarze 804: r->options = options | MPARSE_COMMENT;
1.227 schwarze 805: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 806: r->mstackpos = -1;
1.82 kristaps 807: r->rstackpos = -1;
1.303 schwarze 808: r->escape = '\\';
1.277 schwarze 809: return r;
1.265 schwarze 810: }
811:
1.266 schwarze 812: /* --- syntax tree state data management ---------------------------------- */
813:
1.265 schwarze 814: static void
815: roff_man_free1(struct roff_man *man)
816: {
1.356 schwarze 817: if (man->meta.first != NULL)
818: roff_node_delete(man, man->meta.first);
1.265 schwarze 819: free(man->meta.msec);
820: free(man->meta.vol);
821: free(man->meta.os);
822: free(man->meta.arch);
823: free(man->meta.title);
824: free(man->meta.name);
825: free(man->meta.date);
1.356 schwarze 826: free(man->meta.sodest);
1.265 schwarze 827: }
828:
1.357 schwarze 829: void
830: roff_state_reset(struct roff_man *man)
831: {
832: man->last = man->meta.first;
833: man->last_es = NULL;
834: man->flags = 0;
835: man->lastsec = man->lastnamed = SEC_NONE;
836: man->next = ROFF_NEXT_CHILD;
837: roff_setreg(man->roff, "nS", 0, '=');
838: }
839:
1.265 schwarze 840: static void
841: roff_man_alloc1(struct roff_man *man)
842: {
843: memset(&man->meta, 0, sizeof(man->meta));
1.356 schwarze 844: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
845: man->meta.first->type = ROFFT_ROOT;
846: man->meta.macroset = MACROSET_NONE;
1.357 schwarze 847: roff_state_reset(man);
1.265 schwarze 848: }
849:
850: void
851: roff_man_reset(struct roff_man *man)
852: {
853: roff_man_free1(man);
854: roff_man_alloc1(man);
855: }
856:
857: void
858: roff_man_free(struct roff_man *man)
859: {
860: roff_man_free1(man);
1.380 schwarze 861: free(man->os_r);
1.265 schwarze 862: free(man);
863: }
864:
865: struct roff_man *
1.351 schwarze 866: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.265 schwarze 867: {
868: struct roff_man *man;
869:
870: man = mandoc_calloc(1, sizeof(*man));
871: man->roff = roff;
1.316 schwarze 872: man->os_s = os_s;
1.265 schwarze 873: man->quick = quick;
874: roff_man_alloc1(man);
1.296 schwarze 875: roff->man = man;
1.277 schwarze 876: return man;
1.67 kristaps 877: }
878:
1.266 schwarze 879: /* --- syntax tree handling ----------------------------------------------- */
880:
881: struct roff_node *
882: roff_node_alloc(struct roff_man *man, int line, int pos,
883: enum roff_type type, int tok)
884: {
885: struct roff_node *n;
886:
887: n = mandoc_calloc(1, sizeof(*n));
888: n->line = line;
889: n->pos = pos;
890: n->tok = tok;
891: n->type = type;
892: n->sec = man->lastsec;
893:
894: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 895: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 896: else
1.285 schwarze 897: n->flags &= ~NODE_SYNPRETTY;
1.360 schwarze 898: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.359 schwarze 899: n->flags |= NODE_NOFILL;
900: else
901: n->flags &= ~NODE_NOFILL;
1.266 schwarze 902: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 903: n->flags |= NODE_LINE;
1.266 schwarze 904: man->flags &= ~MDOC_NEWLINE;
905:
1.277 schwarze 906: return n;
1.266 schwarze 907: }
908:
909: void
910: roff_node_append(struct roff_man *man, struct roff_node *n)
911: {
912:
913: switch (man->next) {
914: case ROFF_NEXT_SIBLING:
1.281 schwarze 915: if (man->last->next != NULL) {
916: n->next = man->last->next;
917: man->last->next->prev = n;
918: } else
919: man->last->parent->last = n;
1.266 schwarze 920: man->last->next = n;
921: n->prev = man->last;
922: n->parent = man->last->parent;
923: break;
924: case ROFF_NEXT_CHILD:
1.287 schwarze 925: if (man->last->child != NULL) {
926: n->next = man->last->child;
927: man->last->child->prev = n;
928: } else
929: man->last->last = n;
1.266 schwarze 930: man->last->child = n;
931: n->parent = man->last;
932: break;
933: default:
934: abort();
935: }
1.282 schwarze 936: man->last = n;
1.266 schwarze 937:
938: switch (n->type) {
939: case ROFFT_HEAD:
940: n->parent->head = n;
941: break;
942: case ROFFT_BODY:
1.282 schwarze 943: if (n->end != ENDBODY_NOT)
944: return;
1.266 schwarze 945: n->parent->body = n;
946: break;
947: case ROFFT_TAIL:
948: n->parent->tail = n;
949: break;
950: default:
1.282 schwarze 951: return;
1.266 schwarze 952: }
1.282 schwarze 953:
954: /*
955: * Copy over the normalised-data pointer of our parent. Not
956: * everybody has one, but copying a null pointer is fine.
957: */
958:
959: n->norm = n->parent->norm;
960: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 961: }
962:
1.267 schwarze 963: void
964: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
965: {
966: struct roff_node *n;
967:
968: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
969: n->string = roff_strdup(man->roff, word);
970: roff_node_append(man, n);
1.286 schwarze 971: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 972: man->next = ROFF_NEXT_SIBLING;
973: }
974:
975: void
976: roff_word_append(struct roff_man *man, const char *word)
977: {
978: struct roff_node *n;
979: char *addstr, *newstr;
980:
981: n = man->last;
982: addstr = roff_strdup(man->roff, word);
983: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
984: free(addstr);
985: free(n->string);
986: n->string = newstr;
987: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 988: }
989:
990: void
991: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
992: {
993: struct roff_node *n;
994:
995: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
996: roff_node_append(man, n);
997: man->next = ROFF_NEXT_CHILD;
998: }
999:
1000: struct roff_node *
1001: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1002: {
1003: struct roff_node *n;
1004:
1005: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1006: roff_node_append(man, n);
1007: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1008: return n;
1.267 schwarze 1009: }
1010:
1.266 schwarze 1011: struct roff_node *
1012: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1013: {
1014: struct roff_node *n;
1015:
1016: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1017: roff_node_append(man, n);
1018: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1019: return n;
1.266 schwarze 1020: }
1021:
1022: struct roff_node *
1023: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1024: {
1025: struct roff_node *n;
1026:
1027: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1028: roff_node_append(man, n);
1029: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1030: return n;
1.267 schwarze 1031: }
1032:
1.321 schwarze 1033: static void
1.346 schwarze 1034: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1035: {
1036: struct roff_node *n;
1.346 schwarze 1037: struct tbl_span *span;
1.267 schwarze 1038:
1.356 schwarze 1039: if (man->meta.macroset == MACROSET_MAN)
1.302 schwarze 1040: man_breakscope(man, ROFF_TS);
1.321 schwarze 1041: while ((span = tbl_span(tbl)) != NULL) {
1.346 schwarze 1042: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1043: n->span = span;
1044: roff_node_append(man, n);
1045: n->flags |= NODE_VALID | NODE_ENDED;
1046: man->next = ROFF_NEXT_SIBLING;
1047: }
1.266 schwarze 1048: }
1049:
1050: void
1051: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1052: {
1053:
1054: /* Adjust siblings. */
1055:
1056: if (n->prev)
1057: n->prev->next = n->next;
1058: if (n->next)
1059: n->next->prev = n->prev;
1060:
1061: /* Adjust parent. */
1062:
1063: if (n->parent != NULL) {
1064: if (n->parent->child == n)
1065: n->parent->child = n->next;
1066: if (n->parent->last == n)
1067: n->parent->last = n->prev;
1068: }
1069:
1070: /* Adjust parse point. */
1071:
1072: if (man == NULL)
1073: return;
1074: if (man->last == n) {
1075: if (n->prev == NULL) {
1076: man->last = n->parent;
1077: man->next = ROFF_NEXT_CHILD;
1078: } else {
1079: man->last = n->prev;
1080: man->next = ROFF_NEXT_SIBLING;
1081: }
1082: }
1.356 schwarze 1083: if (man->meta.first == n)
1084: man->meta.first = NULL;
1.344 schwarze 1085: }
1086:
1087: void
1088: roff_node_relink(struct roff_man *man, struct roff_node *n)
1089: {
1090: roff_node_unlink(man, n);
1091: n->prev = n->next = NULL;
1092: roff_node_append(man, n);
1.266 schwarze 1093: }
1094:
1095: void
1096: roff_node_free(struct roff_node *n)
1097: {
1098:
1099: if (n->args != NULL)
1100: mdoc_argv_free(n->args);
1101: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1102: free(n->norm);
1.347 schwarze 1103: eqn_box_free(n->eqn);
1.266 schwarze 1104: free(n->string);
1.374 schwarze 1105: free(n->tag);
1.266 schwarze 1106: free(n);
1107: }
1108:
1109: void
1110: roff_node_delete(struct roff_man *man, struct roff_node *n)
1111: {
1112:
1113: while (n->child != NULL)
1114: roff_node_delete(man, n->child);
1115: roff_node_unlink(man, n);
1116: roff_node_free(n);
1.370 schwarze 1117: }
1118:
1119: int
1120: roff_node_transparent(struct roff_node *n)
1121: {
1122: if (n == NULL)
1123: return 0;
1124: if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
1125: return 1;
1.373 schwarze 1126: return roff_tok_transparent(n->tok);
1127: }
1128:
1129: int
1130: roff_tok_transparent(enum roff_tok tok)
1131: {
1132: switch (tok) {
1.370 schwarze 1133: case ROFF_ft:
1134: case ROFF_ll:
1135: case ROFF_mc:
1136: case ROFF_po:
1137: case ROFF_ta:
1138: case MDOC_Db:
1139: case MDOC_Es:
1140: case MDOC_Sm:
1141: case MDOC_Tg:
1142: case MAN_DT:
1143: case MAN_UC:
1144: case MAN_PD:
1145: case MAN_AT:
1146: return 1;
1147: default:
1148: return 0;
1149: }
1150: }
1151:
1152: struct roff_node *
1153: roff_node_child(struct roff_node *n)
1154: {
1155: for (n = n->child; roff_node_transparent(n); n = n->next)
1156: continue;
1157: return n;
1158: }
1159:
1160: struct roff_node *
1161: roff_node_prev(struct roff_node *n)
1162: {
1163: do {
1164: n = n->prev;
1165: } while (roff_node_transparent(n));
1166: return n;
1167: }
1168:
1169: struct roff_node *
1170: roff_node_next(struct roff_node *n)
1171: {
1172: do {
1173: n = n->next;
1174: } while (roff_node_transparent(n));
1175: return n;
1.269 schwarze 1176: }
1177:
1178: void
1179: deroff(char **dest, const struct roff_node *n)
1180: {
1181: char *cp;
1182: size_t sz;
1183:
1.371 schwarze 1184: if (n->string == NULL) {
1.269 schwarze 1185: for (n = n->child; n != NULL; n = n->next)
1186: deroff(dest, n);
1187: return;
1188: }
1189:
1.288 schwarze 1190: /* Skip leading whitespace. */
1.269 schwarze 1191:
1.288 schwarze 1192: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1193: if (cp[0] == '\\' && cp[1] != '\0' &&
1194: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1195: cp++;
1.288 schwarze 1196: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1197: break;
1198: }
1199:
1.289 schwarze 1200: /* Skip trailing backslash. */
1201:
1202: sz = strlen(cp);
1.290 schwarze 1203: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1204: sz--;
1205:
1.269 schwarze 1206: /* Skip trailing whitespace. */
1207:
1.289 schwarze 1208: for (; sz; sz--)
1.269 schwarze 1209: if ( ! isspace((unsigned char)cp[sz-1]))
1210: break;
1211:
1212: /* Skip empty strings. */
1213:
1214: if (sz == 0)
1215: return;
1216:
1217: if (*dest == NULL) {
1218: *dest = mandoc_strndup(cp, sz);
1219: return;
1220: }
1221:
1222: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1223: free(*dest);
1224: *dest = cp;
1.266 schwarze 1225: }
1226:
1227: /* --- main functions of the roff parser ---------------------------------- */
1228:
1.388 schwarze 1229: /*
1230: * Save comments preceding the title macro, for example in order to
1231: * preserve Copyright and license headers in HTML output,
1232: * provide diagnostics about RCS ids and trailing whitespace in comments,
1233: * then discard comments including preceding whitespace.
1234: * This function also handles input line continuation.
1235: */
1.387 schwarze 1236: static int
1.388 schwarze 1237: roff_parse_comment(struct roff *r, struct buf *buf, int ln, int pos, char ec)
1.387 schwarze 1238: {
1239: struct roff_node *n; /* used for header comments */
1240: const char *start; /* start of the string to process */
1241: const char *cp; /* for RCS id parsing */
1242: char *stesc; /* start of an escape sequence ('\\') */
1243: char *ep; /* end of comment string */
1244: int rcsid; /* kind of RCS id seen */
1245:
1246: for (start = stesc = buf->buf + pos;; stesc++) {
1.388 schwarze 1247: /*
1248: * XXX Ugly hack: Remove the newline character that
1249: * mparse_buf_r() appended to mark the end of input
1250: * if it is not preceded by an escape character.
1251: */
1252: if (stesc[0] == '\n') {
1253: assert(stesc[1] == '\0');
1254: stesc[0] = '\0';
1255: }
1256:
1.387 schwarze 1257: /* The line ends without continuation or comment. */
1258: if (stesc[0] == '\0')
1259: return ROFF_CONT;
1260:
1261: /* Unescaped byte: skip it. */
1.388 schwarze 1262: if (stesc[0] != ec)
1.387 schwarze 1263: continue;
1264:
1.388 schwarze 1265: /*
1266: * XXX Ugly hack: Do not attempt to append another line
1267: * if the function mparse_buf_r() appended a newline
1268: * character to indicate the end of input.
1269: */
1270: if (stesc[1] == '\n') {
1271: assert(stesc[2] == '\0');
1272: stesc[0] = '\0';
1273: return ROFF_CONT;
1274: }
1275:
1276: /*
1277: * An escape character at the end of an input line
1278: * requests line continuation.
1279: */
1.387 schwarze 1280: if (stesc[1] == '\0') {
1281: stesc[0] = '\0';
1282: return ROFF_IGN | ROFF_APPEND;
1283: }
1284:
1285: /* Found a comment: process it. */
1286: if (stesc[1] == '"' || stesc[1] == '#')
1287: break;
1288:
1289: /* Escaped escape character: skip them both. */
1.388 schwarze 1290: if (stesc[1] == ec)
1.387 schwarze 1291: stesc++;
1292: }
1293:
1294: /* Look for an RCS id in the comment. */
1295:
1296: rcsid = 0;
1297: if ((cp = strstr(stesc + 2, "$" "OpenBSD")) != NULL) {
1298: rcsid = 1 << MANDOC_OS_OPENBSD;
1299: cp += 8;
1300: } else if ((cp = strstr(stesc + 2, "$" "NetBSD")) != NULL) {
1301: rcsid = 1 << MANDOC_OS_NETBSD;
1302: cp += 7;
1303: }
1304: if (cp != NULL && isalnum((unsigned char)*cp) == 0 &&
1305: strchr(cp, '$') != NULL) {
1306: if (r->man->meta.rcsids & rcsid)
1307: mandoc_msg(MANDOCERR_RCS_REP, ln,
1308: (int)(stesc - buf->buf) + 2, "%s", stesc + 1);
1309: r->man->meta.rcsids |= rcsid;
1310: }
1311:
1312: /* Warn about trailing whitespace at the end of the comment. */
1313:
1314: ep = strchr(stesc + 2, '\0') - 1;
1315: if (*ep == '\n')
1316: *ep-- = '\0';
1317: if (*ep == ' ' || *ep == '\t')
1318: mandoc_msg(MANDOCERR_SPACE_EOL,
1319: ln, (int)(ep - buf->buf), NULL);
1320:
1321: /* Save comments preceding the title macro in the syntax tree. */
1322:
1323: if (r->options & MPARSE_COMMENT) {
1324: while (*ep == ' ' || *ep == '\t')
1325: ep--;
1326: ep[1] = '\0';
1327: n = roff_node_alloc(r->man, ln, stesc + 1 - buf->buf,
1328: ROFFT_COMMENT, TOKEN_NONE);
1329: n->string = mandoc_strdup(stesc + 2);
1330: roff_node_append(r->man, n);
1331: n->flags |= NODE_VALID | NODE_ENDED;
1332: r->man->next = ROFF_NEXT_SIBLING;
1333: }
1334:
1335: /* The comment requests line continuation. */
1336:
1337: if (stesc[1] == '#') {
1338: *stesc = '\0';
1339: return ROFF_IGN | ROFF_APPEND;
1340: }
1341:
1342: /* Discard the comment including preceding whitespace. */
1343:
1344: while (stesc > start && stesc[-1] == ' ' &&
1345: (stesc == start + 1 || stesc[-2] != '\\'))
1346: stesc--;
1347: *stesc = '\0';
1348: return ROFF_CONT;
1349: }
1350:
1.94 kristaps 1351: /*
1.355 schwarze 1352: * In the current line, expand escape sequences that produce parsable
1353: * input text. Also check the syntax of the remaining escape sequences,
1354: * which typically produce output glyphs or change formatter state.
1.154 kristaps 1355: */
1.340 schwarze 1356: static int
1.388 schwarze 1357: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char ec)
1.94 kristaps 1358: {
1.388 schwarze 1359: char ubuf[24]; /* buffer to print a number */
1360: struct mctx *ctx; /* current macro call context */
1361: const char *res; /* the string to be pasted */
1362: const char *src; /* source for copying */
1363: char *dst; /* destination for copying */
1.399 schwarze 1364: enum mandoc_esc subtype; /* return value from roff_escape */
1.388 schwarze 1365: int iesc; /* index of leading escape char */
1366: int inam; /* index of the escape name */
1367: int iarg; /* index beginning the argument */
1368: int iendarg; /* index right after the argument */
1369: int iend; /* index right after the sequence */
1.393 schwarze 1370: int isrc, idst; /* to reduce \\ and \. in names */
1.388 schwarze 1371: int deftype; /* type of definition to paste */
1372: int argi; /* macro argument index */
1373: int quote_args; /* true for \\$@, false for \\$* */
1374: int asz; /* length of the replacement */
1375: int rsz; /* length of the rest of the string */
1376: int npos; /* position in numeric expression */
1.181 schwarze 1377: int expand_count; /* to avoid infinite loops */
1.303 schwarze 1378:
1.170 schwarze 1379: expand_count = 0;
1.388 schwarze 1380: while (buf->buf[pos] != '\0') {
1.170 schwarze 1381:
1.388 schwarze 1382: /*
1383: * Skip plain ASCII characters.
1384: * If we have a non-standard escape character,
1385: * escape literal backslashes because all processing in
1386: * subsequent functions uses the standard escaping rules.
1387: */
1.205 schwarze 1388:
1.388 schwarze 1389: if (buf->buf[pos] != ec) {
1.397 schwarze 1390: if (buf->buf[pos] == '\\') {
1.388 schwarze 1391: roff_expand_patch(buf, pos, "\\e", pos + 1);
1392: pos++;
1.303 schwarze 1393: }
1.388 schwarze 1394: pos++;
1.205 schwarze 1395: continue;
1.303 schwarze 1396: }
1.205 schwarze 1397:
1.388 schwarze 1398: /*
1399: * Parse escape sequences,
1400: * issue diagnostic messages when appropriate,
1401: * and skip sequences that do not need expansion.
1402: * If we have a non-standard escape character, translate
1403: * it to backslashes and translate backslashes to \e.
1404: */
1.205 schwarze 1405:
1.392 schwarze 1406: if (roff_escape(buf->buf, ln, pos, &iesc, &inam,
1407: &iarg, &iendarg, &iend) != ESCAPE_EXPAND) {
1.388 schwarze 1408: while (pos < iend) {
1409: if (buf->buf[pos] == ec) {
1410: buf->buf[pos] = '\\';
1411: if (pos + 1 < iend)
1412: pos++;
1413: } else if (buf->buf[pos] == '\\') {
1414: roff_expand_patch(buf,
1415: pos, "\\e", pos + 1);
1416: pos++;
1417: iend++;
1418: }
1419: pos++;
1.352 schwarze 1420: }
1.205 schwarze 1421: continue;
1.152 kristaps 1422: }
1.388 schwarze 1423:
1.393 schwarze 1424: /* Reduce \\ and \. in names. */
1425:
1426: if (buf->buf[inam] == '*' || buf->buf[inam] == 'n') {
1427: isrc = idst = iarg;
1428: while (isrc < iendarg) {
1429: if (isrc + 1 < iendarg &&
1430: buf->buf[isrc] == '\\' &&
1431: (buf->buf[isrc + 1] == '\\' ||
1432: buf->buf[isrc + 1] == '.'))
1433: isrc++;
1434: buf->buf[idst++] = buf->buf[isrc++];
1435: }
1436: iendarg -= isrc - idst;
1437: }
1438:
1.388 schwarze 1439: /* Handle expansion. */
1440:
1441: res = NULL;
1442: switch (buf->buf[inam]) {
1443: case '*':
1444: if (iendarg == iarg)
1.206 schwarze 1445: break;
1.388 schwarze 1446: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1447: if ((res = roff_getstrn(r, buf->buf + iarg,
1448: iendarg - iarg, &deftype)) != NULL)
1.206 schwarze 1449: break;
1.94 kristaps 1450:
1.388 schwarze 1451: /*
1.396 schwarze 1452: * If not overridden,
1.388 schwarze 1453: * let \*(.T through to the formatters.
1454: */
1.94 kristaps 1455:
1.388 schwarze 1456: if (iendarg - iarg == 2 &&
1457: buf->buf[iarg] == '.' &&
1458: buf->buf[iarg + 1] == 'T') {
1459: roff_setstrn(&r->strtab, ".T", 2, NULL, 0, 0);
1460: pos = iend;
1.253 schwarze 1461: continue;
1462: }
1.94 kristaps 1463:
1.388 schwarze 1464: mandoc_msg(MANDOCERR_STR_UNDEF, ln, iesc,
1465: "%.*s", iendarg - iarg, buf->buf + iarg);
1466: break;
1.108 schwarze 1467:
1.339 schwarze 1468: case '$':
1469: if (r->mstackpos < 0) {
1.388 schwarze 1470: mandoc_msg(MANDOCERR_ARG_UNDEF, ln, iesc,
1471: "%.*s", iend - iesc, buf->buf + iesc);
1.339 schwarze 1472: break;
1473: }
1474: ctx = r->mstack + r->mstackpos;
1.388 schwarze 1475: argi = buf->buf[iarg] - '1';
1476: if (argi >= 0 && argi <= 8) {
1477: if (argi < ctx->argc)
1478: res = ctx->argv[argi];
1.339 schwarze 1479: break;
1480: }
1.388 schwarze 1481: if (buf->buf[iarg] == '*')
1.339 schwarze 1482: quote_args = 0;
1.388 schwarze 1483: else if (buf->buf[iarg] == '@')
1.339 schwarze 1484: quote_args = 1;
1485: else {
1.388 schwarze 1486: mandoc_msg(MANDOCERR_ARG_NONUM, ln, iesc,
1487: "%.*s", iend - iesc, buf->buf + iesc);
1.339 schwarze 1488: break;
1489: }
1490: asz = 0;
1.388 schwarze 1491: for (argi = 0; argi < ctx->argc; argi++) {
1492: if (argi)
1.339 schwarze 1493: asz++; /* blank */
1494: if (quote_args)
1495: asz += 2; /* quotes */
1.388 schwarze 1496: asz += strlen(ctx->argv[argi]);
1.339 schwarze 1497: }
1.388 schwarze 1498: if (asz != iend - iesc) {
1499: rsz = buf->sz - iend;
1500: if (asz < iend - iesc)
1501: memmove(buf->buf + iesc + asz,
1502: buf->buf + iend, rsz);
1503: buf->sz = iesc + asz + rsz;
1504: buf->buf = mandoc_realloc(buf->buf, buf->sz);
1505: if (asz > iend - iesc)
1506: memmove(buf->buf + iesc + asz,
1507: buf->buf + iend, rsz);
1.339 schwarze 1508: }
1.388 schwarze 1509: dst = buf->buf + iesc;
1510: for (argi = 0; argi < ctx->argc; argi++) {
1511: if (argi)
1512: *dst++ = ' ';
1.339 schwarze 1513: if (quote_args)
1.388 schwarze 1514: *dst++ = '"';
1515: src = ctx->argv[argi];
1516: while (*src != '\0')
1517: *dst++ = *src++;
1.339 schwarze 1518: if (quote_args)
1.388 schwarze 1519: *dst++ = '"';
1.339 schwarze 1520: }
1521: continue;
1.391 schwarze 1522: case 'A':
1523: ubuf[0] = iendarg > iarg ? '1' : '0';
1524: ubuf[1] = '\0';
1525: res = ubuf;
1526: break;
1.207 schwarze 1527: case 'B':
1.206 schwarze 1528: npos = 0;
1.388 schwarze 1529: ubuf[0] = iendarg > iarg && iend > iendarg &&
1.402 ! schwarze 1530: roff_evalnum(ln, buf->buf + iarg, &npos,
1.388 schwarze 1531: NULL, ROFFNUM_SCALE) &&
1532: npos == iendarg - iarg ? '1' : '0';
1.206 schwarze 1533: ubuf[1] = '\0';
1.388 schwarze 1534: res = ubuf;
1.206 schwarze 1535: break;
1.389 schwarze 1536: case 'V':
1537: mandoc_msg(MANDOCERR_UNSUPP, ln, iesc,
1538: "%.*s", iend - iesc, buf->buf + iesc);
1539: roff_expand_patch(buf, iendarg, "}", iend);
1540: roff_expand_patch(buf, iesc, "${", iarg);
1541: continue;
1.390 schwarze 1542: case 'g':
1543: break;
1.207 schwarze 1544: case 'n':
1.388 schwarze 1545: if (iendarg > iarg)
1.218 schwarze 1546: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.388 schwarze 1547: roff_getregn(r, buf->buf + iarg,
1548: iendarg - iarg, buf->buf[inam + 1]));
1.218 schwarze 1549: else
1550: ubuf[0] = '\0';
1.388 schwarze 1551: res = ubuf;
1.206 schwarze 1552: break;
1.207 schwarze 1553: case 'w':
1.399 schwarze 1554: rsz = 0;
1555: subtype = ESCAPE_UNDEF;
1556: while (iarg < iendarg) {
1557: asz = subtype == ESCAPE_SKIPCHAR ? 0 : 1;
1558: if (buf->buf[iarg] != '\\') {
1559: rsz += asz;
1560: iarg++;
1561: continue;
1562: }
1563: switch ((subtype = roff_escape(buf->buf, 0,
1564: iarg, NULL, NULL, NULL, NULL, &iarg))) {
1565: case ESCAPE_SPECIAL:
1566: case ESCAPE_NUMBERED:
1567: case ESCAPE_UNICODE:
1568: case ESCAPE_OVERSTRIKE:
1569: case ESCAPE_UNDEF:
1570: break;
1571: case ESCAPE_DEVICE:
1572: asz *= 8;
1573: break;
1574: case ESCAPE_EXPAND:
1575: abort();
1576: default:
1577: continue;
1578: }
1579: rsz += asz;
1580: }
1581: (void)snprintf(ubuf, sizeof(ubuf), "%d", rsz * 24);
1.388 schwarze 1582: res = ubuf;
1583: break;
1584: default:
1.206 schwarze 1585: break;
1586: }
1.388 schwarze 1587: if (res == NULL)
1.142 kristaps 1588: res = "";
1.388 schwarze 1589: if (++expand_count > EXPAND_LIMIT ||
1590: buf->sz + strlen(res) > SHRT_MAX) {
1591: mandoc_msg(MANDOCERR_ROFFLOOP, ln, iesc, NULL);
1.277 schwarze 1592: return ROFF_IGN;
1.94 kristaps 1593: }
1.388 schwarze 1594: roff_expand_patch(buf, iesc, res, iend);
1595: }
1596: return ROFF_CONT;
1597: }
1.94 kristaps 1598:
1.388 schwarze 1599: /*
1600: * Replace the substring from the start position (inclusive)
1601: * to end position (exclusive) with the repl(acement) string.
1602: */
1603: static void
1604: roff_expand_patch(struct buf *buf, int start, const char *repl, int end)
1605: {
1606: char *nbuf;
1.108 schwarze 1607:
1.389 schwarze 1608: buf->sz = mandoc_asprintf(&nbuf, "%.*s%s%s", start, buf->buf,
1609: repl, buf->buf + end) + 1;
1.388 schwarze 1610: free(buf->buf);
1611: buf->buf = nbuf;
1.154 kristaps 1612: }
1.353 schwarze 1613:
1614: /*
1615: * Parse a quoted or unquoted roff-style request or macro argument.
1616: * Return a pointer to the parsed argument, which is either the original
1617: * pointer or advanced by one byte in case the argument is quoted.
1618: * NUL-terminate the argument in place.
1619: * Collapse pairs of quotes inside quoted arguments.
1620: * Advance the argument pointer to the next argument,
1621: * or to the NUL byte terminating the argument line.
1622: */
1623: char *
1.355 schwarze 1624: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.353 schwarze 1625: {
1.355 schwarze 1626: struct buf buf;
1.366 schwarze 1627: char *cp, *start;
1.355 schwarze 1628: int newesc, pairs, quoted, white;
1.353 schwarze 1629:
1630: /* Quoting can only start with a new word. */
1631: start = *cpp;
1632: quoted = 0;
1633: if ('"' == *start) {
1634: quoted = 1;
1635: start++;
1636: }
1637:
1.355 schwarze 1638: newesc = pairs = white = 0;
1.353 schwarze 1639: for (cp = start; '\0' != *cp; cp++) {
1640:
1641: /*
1642: * Move the following text left
1643: * after quoted quotes and after "\\" and "\t".
1644: */
1645: if (pairs)
1646: cp[-pairs] = cp[0];
1647:
1648: if ('\\' == cp[0]) {
1649: /*
1650: * In copy mode, translate double to single
1651: * backslashes and backslash-t to literal tabs.
1652: */
1653: switch (cp[1]) {
1654: case 'a':
1655: case 't':
1.354 schwarze 1656: cp[-pairs] = '\t';
1.355 schwarze 1657: pairs++;
1658: cp++;
1659: break;
1.353 schwarze 1660: case '\\':
1.397 schwarze 1661: cp[-pairs] = '\\';
1.355 schwarze 1662: newesc = 1;
1.353 schwarze 1663: pairs++;
1664: cp++;
1665: break;
1666: case ' ':
1667: /* Skip escaped blanks. */
1668: if (0 == quoted)
1669: cp++;
1670: break;
1671: default:
1672: break;
1673: }
1674: } else if (0 == quoted) {
1675: if (' ' == cp[0]) {
1676: /* Unescaped blanks end unquoted args. */
1677: white = 1;
1678: break;
1679: }
1680: } else if ('"' == cp[0]) {
1681: if ('"' == cp[1]) {
1682: /* Quoted quotes collapse. */
1683: pairs++;
1684: cp++;
1685: } else {
1686: /* Unquoted quotes end quoted args. */
1687: quoted = 2;
1688: break;
1689: }
1690: }
1691: }
1692:
1693: /* Quoted argument without a closing quote. */
1694: if (1 == quoted)
1695: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1696:
1697: /* NUL-terminate this argument and move to the next one. */
1698: if (pairs)
1699: cp[-pairs] = '\0';
1700: if ('\0' != *cp) {
1701: *cp++ = '\0';
1702: while (' ' == *cp)
1703: cp++;
1704: }
1705: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1706: *cpp = cp;
1707:
1708: if ('\0' == *cp && (white || ' ' == cp[-1]))
1709: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1710:
1.355 schwarze 1711: start = mandoc_strdup(start);
1712: if (newesc == 0)
1713: return start;
1714:
1715: buf.buf = start;
1716: buf.sz = strlen(start) + 1;
1717: buf.next = NULL;
1.398 schwarze 1718: if (roff_expand(r, &buf, ln, 0, '\\') == ROFF_IGN) {
1.355 schwarze 1719: free(buf.buf);
1720: buf.buf = mandoc_strdup("");
1721: }
1722: return buf.buf;
1.353 schwarze 1723: }
1724:
1.154 kristaps 1725:
1726: /*
1.275 schwarze 1727: * Process text streams.
1.154 kristaps 1728: */
1.340 schwarze 1729: static int
1.305 schwarze 1730: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1731: {
1732: size_t sz;
1733: const char *start;
1.178 schwarze 1734: char *p;
1735: int isz;
1.154 kristaps 1736: enum mandoc_esc esc;
1737:
1.275 schwarze 1738: /* Spring the input line trap. */
1739:
1740: if (roffit_lines == 1) {
1741: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1742: free(buf->buf);
1743: buf->buf = p;
1744: buf->sz = isz + 1;
1745: *offs = 0;
1746: free(roffit_macro);
1747: roffit_lines = 0;
1.277 schwarze 1748: return ROFF_REPARSE;
1.275 schwarze 1749: } else if (roffit_lines > 1)
1750: --roffit_lines;
1751:
1.305 schwarze 1752: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1753: if (roffce_lines < 1) {
1754: r->man->last = roffce_node;
1755: r->man->next = ROFF_NEXT_SIBLING;
1756: roffce_lines = 0;
1757: roffce_node = NULL;
1758: } else
1759: roffce_lines--;
1760: }
1761:
1.275 schwarze 1762: /* Convert all breakable hyphens into ASCII_HYPH. */
1763:
1.238 schwarze 1764: start = p = buf->buf + pos;
1.154 kristaps 1765:
1.238 schwarze 1766: while (*p != '\0') {
1.154 kristaps 1767: sz = strcspn(p, "-\\");
1768: p += sz;
1769:
1.238 schwarze 1770: if (*p == '\0')
1.159 kristaps 1771: break;
1772:
1.238 schwarze 1773: if (*p == '\\') {
1.154 kristaps 1774: /* Skip over escapes. */
1775: p++;
1.189 schwarze 1776: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1777: if (esc == ESCAPE_ERROR)
1.154 kristaps 1778: break;
1.264 schwarze 1779: while (*p == '-')
1780: p++;
1.155 kristaps 1781: continue;
1.159 kristaps 1782: } else if (p == start) {
1.158 kristaps 1783: p++;
1.155 kristaps 1784: continue;
1.158 kristaps 1785: }
1.155 kristaps 1786:
1.171 schwarze 1787: if (isalpha((unsigned char)p[-1]) &&
1788: isalpha((unsigned char)p[1]))
1.155 kristaps 1789: *p = ASCII_HYPH;
1790: p++;
1.94 kristaps 1791: }
1.277 schwarze 1792: return ROFF_CONT;
1.94 kristaps 1793: }
1794:
1.340 schwarze 1795: int
1.377 schwarze 1796: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs, size_t len)
1.67 kristaps 1797: {
1.294 schwarze 1798: enum roff_tok t;
1.340 schwarze 1799: int e;
1.238 schwarze 1800: int pos; /* parse point */
1.243 schwarze 1801: int spos; /* saved parse point for messages */
1.238 schwarze 1802: int ppos; /* original offset in buf->buf */
1803: int ctl; /* macro line (boolean) */
1804:
1805: ppos = pos = *offs;
1.377 schwarze 1806:
1807: if (len > 80 && r->tbl == NULL && r->eqn == NULL &&
1808: (r->man->flags & ROFF_NOFILL) == 0 &&
1809: strchr(" .\\", buf->buf[pos]) == NULL &&
1810: buf->buf[pos] != r->control &&
1811: strcspn(buf->buf, " ") < 80)
1812: mandoc_msg(MANDOCERR_TEXT_LONG, ln, (int)len - 1,
1813: "%.20s...", buf->buf + pos);
1.79 kristaps 1814:
1.230 schwarze 1815: /* Handle in-line equation delimiters. */
1816:
1.236 schwarze 1817: if (r->tbl == NULL &&
1818: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1819: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1820: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1821: if (e == ROFF_REPARSE)
1.277 schwarze 1822: return e;
1.230 schwarze 1823: assert(e == ROFF_CONT);
1824: }
1825:
1.387 schwarze 1826: /* Handle comments and escape sequences. */
1827:
1828: e = roff_parse_comment(r, buf, ln, pos, r->escape);
1829: if ((e & ROFF_MASK) == ROFF_IGN)
1830: return e;
1831: assert(e == ROFF_CONT);
1.94 kristaps 1832:
1.355 schwarze 1833: e = roff_expand(r, buf, ln, pos, r->escape);
1.340 schwarze 1834: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1835: return e;
1.238 schwarze 1836: assert(e == ROFF_CONT);
1.94 kristaps 1837:
1.238 schwarze 1838: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1839:
1.94 kristaps 1840: /*
1.79 kristaps 1841: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1842: * text through the macro's filter.
1843: * Equations process all content themselves.
1844: * Tables process almost all content themselves, but we want
1845: * to warn about macros before passing it there.
1.79 kristaps 1846: */
1.74 kristaps 1847:
1.252 schwarze 1848: if (r->last != NULL && ! ctl) {
1.78 kristaps 1849: t = r->last->tok;
1.238 schwarze 1850: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1851: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1852: return e;
1.340 schwarze 1853: e &= ~ROFF_MASK;
1854: } else
1855: e = ROFF_IGN;
1.319 schwarze 1856: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1857: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1858: return e;
1.319 schwarze 1859: }
1.321 schwarze 1860: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1861: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1862: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1863: return e;
1.321 schwarze 1864: }
1.367 schwarze 1865: if ( ! ctl) {
1866: r->options &= ~MPARSE_COMMENT;
1.340 schwarze 1867: return roff_parsetext(r, buf, pos, offs) | e;
1.367 schwarze 1868: }
1.228 schwarze 1869:
1870: /* Skip empty request lines. */
1871:
1.238 schwarze 1872: if (buf->buf[pos] == '"') {
1.350 schwarze 1873: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1874: return ROFF_IGN;
1.238 schwarze 1875: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1876: return ROFF_IGN;
1.67 kristaps 1877:
1.79 kristaps 1878: /*
1879: * If a scope is open, go to the child handler for that macro,
1880: * as it may want to preprocess before doing anything with it.
1881: */
1.78 kristaps 1882:
1.79 kristaps 1883: if (r->last) {
1884: t = r->last->tok;
1.277 schwarze 1885: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1886: }
1.78 kristaps 1887:
1.367 schwarze 1888: r->options &= ~MPARSE_COMMENT;
1.243 schwarze 1889: spos = pos;
1890: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.386 schwarze 1891: return roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1892: }
1893:
1894: /*
1895: * Handle a new request or macro.
1896: * May be called outside any scope or from inside a conditional scope.
1897: */
1898: static int
1899: roff_req_or_macro(ROFF_ARGS) {
1.243 schwarze 1900:
1.386 schwarze 1901: /* For now, tables ignore most macros and some request. */
1.243 schwarze 1902:
1.386 schwarze 1903: if (r->tbl != NULL && (tok == TOKEN_NONE || tok == ROFF_TS ||
1904: tok == ROFF_br || tok == ROFF_ce || tok == ROFF_rj ||
1905: tok == ROFF_sp)) {
1.350 schwarze 1906: mandoc_msg(MANDOCERR_TBLMACRO,
1.386 schwarze 1907: ln, ppos, "%s", buf->buf + ppos);
1908: if (tok != TOKEN_NONE)
1.277 schwarze 1909: return ROFF_IGN;
1.257 schwarze 1910: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1911: pos++;
1.291 schwarze 1912: while (buf->buf[pos] == ' ')
1.257 schwarze 1913: pos++;
1.321 schwarze 1914: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1915: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1916: return ROFF_IGN;
1.243 schwarze 1917: }
1918:
1.305 schwarze 1919: /* For now, let high level macros abort .ce mode. */
1920:
1.386 schwarze 1921: if (roffce_node != NULL &&
1922: (tok == TOKEN_NONE || tok == ROFF_Dd || tok == ROFF_EQ ||
1923: tok == ROFF_TH || tok == ROFF_TS)) {
1.305 schwarze 1924: r->man->last = roffce_node;
1925: r->man->next = ROFF_NEXT_SIBLING;
1926: roffce_lines = 0;
1927: roffce_node = NULL;
1928: }
1929:
1.79 kristaps 1930: /*
1.243 schwarze 1931: * This is neither a roff request nor a user-defined macro.
1932: * Let the standard macro set parsers handle it.
1.79 kristaps 1933: */
1.67 kristaps 1934:
1.386 schwarze 1935: if (tok == TOKEN_NONE)
1.277 schwarze 1936: return ROFF_CONT;
1.243 schwarze 1937:
1.386 schwarze 1938: /* Execute a roff request or a user-defined macro. */
1.67 kristaps 1939:
1.386 schwarze 1940: return (*roffs[tok].proc)(r, tok, buf, ln, ppos, pos, offs);
1.74 kristaps 1941: }
1942:
1.339 schwarze 1943: /*
1944: * Internal interface function to tell the roff parser that execution
1945: * of the current macro ended. This is required because macro
1946: * definitions usually do not end with a .return request.
1947: */
1948: void
1949: roff_userret(struct roff *r)
1950: {
1951: struct mctx *ctx;
1952: int i;
1953:
1954: assert(r->mstackpos >= 0);
1955: ctx = r->mstack + r->mstackpos;
1956: for (i = 0; i < ctx->argc; i++)
1957: free(ctx->argv[i]);
1958: ctx->argc = 0;
1959: r->mstackpos--;
1960: }
1961:
1.117 kristaps 1962: void
1.74 kristaps 1963: roff_endparse(struct roff *r)
1964: {
1.321 schwarze 1965: if (r->last != NULL)
1.350 schwarze 1966: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1967: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 1968:
1.321 schwarze 1969: if (r->eqn != NULL) {
1.350 schwarze 1970: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 1971: r->eqn->node->line, r->eqn->node->pos, "EQ");
1972: eqn_parse(r->eqn);
1973: r->eqn = NULL;
1.125 kristaps 1974: }
1975:
1.321 schwarze 1976: if (r->tbl != NULL) {
1.346 schwarze 1977: tbl_end(r->tbl, 1);
1.321 schwarze 1978: r->tbl = NULL;
1.117 kristaps 1979: }
1.67 kristaps 1980: }
1981:
1982: /*
1.386 schwarze 1983: * Parse the request or macro name at buf[*pos].
1984: * Return ROFF_RENAMED, ROFF_USERDEF, or a ROFF_* token value.
1985: * For empty, undefined, mdoc(7), and man(7) macros, return TOKEN_NONE.
1986: * As a side effect, set r->current_string to the definition or to NULL.
1.67 kristaps 1987: */
1.294 schwarze 1988: static enum roff_tok
1.214 schwarze 1989: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1990: {
1.214 schwarze 1991: char *cp;
1.106 kristaps 1992: const char *mac;
1993: size_t maclen;
1.315 schwarze 1994: int deftype;
1.294 schwarze 1995: enum roff_tok t;
1.67 kristaps 1996:
1.214 schwarze 1997: cp = buf + *pos;
1998:
1999: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 2000: return TOKEN_NONE;
1.67 kristaps 2001:
1.214 schwarze 2002: mac = cp;
1.402 ! schwarze 2003: maclen = roff_getname(&cp, ln, ppos);
1.67 kristaps 2004:
1.315 schwarze 2005: deftype = ROFFDEF_USER | ROFFDEF_REN;
2006: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
2007: switch (deftype) {
2008: case ROFFDEF_USER:
2009: t = ROFF_USERDEF;
2010: break;
2011: case ROFFDEF_REN:
2012: t = ROFF_RENAMED;
2013: break;
2014: default:
2015: t = roffhash_find(r->reqtab, mac, maclen);
2016: break;
2017: }
1.294 schwarze 2018: if (t != TOKEN_NONE)
1.214 schwarze 2019: *pos = cp - buf;
1.325 schwarze 2020: else if (deftype == ROFFDEF_UNDEF) {
2021: /* Using an undefined macro defines it to be empty. */
2022: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
2023: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
2024: }
1.277 schwarze 2025: return t;
1.67 kristaps 2026: }
2027:
1.266 schwarze 2028: /* --- handling of request blocks ----------------------------------------- */
2029:
1.375 schwarze 2030: /*
2031: * Close a macro definition block or an "ignore" block.
2032: */
1.340 schwarze 2033: static int
1.76 kristaps 2034: roff_cblock(ROFF_ARGS)
1.67 kristaps 2035: {
1.375 schwarze 2036: int rr;
1.79 kristaps 2037:
1.238 schwarze 2038: if (r->last == NULL) {
1.350 schwarze 2039: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2040: return ROFF_IGN;
1.76 kristaps 2041: }
1.67 kristaps 2042:
1.81 kristaps 2043: switch (r->last->tok) {
1.207 schwarze 2044: case ROFF_am:
2045: case ROFF_ami:
2046: case ROFF_de:
2047: case ROFF_dei:
2048: case ROFF_ig:
1.81 kristaps 2049: break;
1.375 schwarze 2050: case ROFF_am1:
2051: case ROFF_de1:
2052: /* Remapped in roff_block(). */
2053: abort();
1.81 kristaps 2054: default:
1.350 schwarze 2055: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2056: return ROFF_IGN;
1.76 kristaps 2057: }
1.67 kristaps 2058:
1.375 schwarze 2059: roffnode_pop(r);
2060: roffnode_cleanscope(r);
2061:
2062: /*
2063: * If a conditional block with braces is still open,
2064: * check for "\}" block end markers.
2065: */
2066:
2067: if (r->last != NULL && r->last->endspan < 0) {
2068: rr = 1; /* If arguments follow "\}", warn about them. */
2069: roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
2070: }
2071:
1.238 schwarze 2072: if (buf->buf[pos] != '\0')
1.350 schwarze 2073: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 2074: ".. %s", buf->buf + pos);
1.71 kristaps 2075:
1.277 schwarze 2076: return ROFF_IGN;
1.67 kristaps 2077: }
2078:
1.364 schwarze 2079: /*
2080: * Pop all nodes ending at the end of the current input line.
2081: * Return the number of loops ended.
2082: */
1.340 schwarze 2083: static int
1.76 kristaps 2084: roffnode_cleanscope(struct roff *r)
1.67 kristaps 2085: {
1.340 schwarze 2086: int inloop;
1.67 kristaps 2087:
1.340 schwarze 2088: inloop = 0;
1.375 schwarze 2089: while (r->last != NULL && r->last->endspan > 0) {
1.173 schwarze 2090: if (--r->last->endspan != 0)
1.76 kristaps 2091: break;
1.340 schwarze 2092: inloop += roffnode_pop(r);
1.76 kristaps 2093: }
1.340 schwarze 2094: return inloop;
1.67 kristaps 2095: }
2096:
1.364 schwarze 2097: /*
1.375 schwarze 2098: * Handle the closing "\}" of a conditional block.
1.364 schwarze 2099: * Apart from generating warnings, this only pops nodes.
2100: * Return the number of loops ended.
2101: */
1.340 schwarze 2102: static int
1.195 schwarze 2103: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 2104: {
1.76 kristaps 2105: if (NULL == r->last) {
1.350 schwarze 2106: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2107: return 0;
1.76 kristaps 2108: }
2109:
1.82 kristaps 2110: switch (r->last->tok) {
1.207 schwarze 2111: case ROFF_el:
2112: case ROFF_ie:
2113: case ROFF_if:
1.340 schwarze 2114: case ROFF_while:
1.82 kristaps 2115: break;
2116: default:
1.350 schwarze 2117: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2118: return 0;
1.75 kristaps 2119: }
2120:
1.76 kristaps 2121: if (r->last->endspan > -1) {
1.350 schwarze 2122: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2123: return 0;
1.76 kristaps 2124: }
2125:
1.340 schwarze 2126: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 2127: }
2128:
1.340 schwarze 2129: static int
1.80 kristaps 2130: roff_block(ROFF_ARGS)
1.76 kristaps 2131: {
1.315 schwarze 2132: const char *name, *value;
2133: char *call, *cp, *iname, *rname;
2134: size_t csz, namesz, rsz;
2135: int deftype;
1.106 kristaps 2136:
1.220 schwarze 2137: /* Ignore groff compatibility mode for now. */
1.76 kristaps 2138:
1.238 schwarze 2139: if (tok == ROFF_de1)
1.220 schwarze 2140: tok = ROFF_de;
1.251 schwarze 2141: else if (tok == ROFF_dei1)
2142: tok = ROFF_dei;
1.238 schwarze 2143: else if (tok == ROFF_am1)
1.220 schwarze 2144: tok = ROFF_am;
1.251 schwarze 2145: else if (tok == ROFF_ami1)
2146: tok = ROFF_ami;
1.220 schwarze 2147:
2148: /* Parse the macro name argument. */
2149:
1.238 schwarze 2150: cp = buf->buf + pos;
2151: if (tok == ROFF_ig) {
1.220 schwarze 2152: iname = NULL;
2153: namesz = 0;
2154: } else {
2155: iname = cp;
1.402 ! schwarze 2156: namesz = roff_getname(&cp, ln, ppos);
1.220 schwarze 2157: iname[namesz] = '\0';
2158: }
1.107 kristaps 2159:
1.220 schwarze 2160: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 2161:
1.238 schwarze 2162: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2163: deftype = ROFFDEF_USER;
2164: name = roff_getstrn(r, iname, namesz, &deftype);
2165: if (name == NULL) {
1.350 schwarze 2166: mandoc_msg(MANDOCERR_STR_UNDEF,
2167: ln, (int)(iname - buf->buf),
1.220 schwarze 2168: "%.*s", (int)namesz, iname);
2169: namesz = 0;
2170: } else
2171: namesz = strlen(name);
2172: } else
2173: name = iname;
1.107 kristaps 2174:
1.238 schwarze 2175: if (namesz == 0 && tok != ROFF_ig) {
1.350 schwarze 2176: mandoc_msg(MANDOCERR_REQ_EMPTY,
2177: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2178: return ROFF_IGN;
1.220 schwarze 2179: }
1.80 kristaps 2180:
1.106 kristaps 2181: roffnode_push(r, tok, name, ln, ppos);
2182:
2183: /*
2184: * At the beginning of a `de' macro, clear the existing string
2185: * with the same name, if there is one. New content will be
1.193 schwarze 2186: * appended from roff_block_text() in multiline mode.
1.106 kristaps 2187: */
1.107 kristaps 2188:
1.311 schwarze 2189: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 2190: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 2191: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 2192: } else if (tok == ROFF_am || tok == ROFF_ami) {
2193: deftype = ROFFDEF_ANY;
2194: value = roff_getstrn(r, iname, namesz, &deftype);
2195: switch (deftype) { /* Before appending, ... */
2196: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2197: roff_setstrn(&r->strtab, name, namesz,
2198: value, strlen(value), 0);
2199: break;
2200: case ROFFDEF_REN: /* call original standard macro. */
2201: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2202: (int)strlen(value), value);
2203: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2204: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2205: free(call);
2206: break;
2207: case ROFFDEF_STD: /* rename and call standard macro. */
2208: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2209: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2210: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2211: (int)rsz, rname);
2212: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2213: free(call);
2214: free(rname);
2215: break;
2216: default:
2217: break;
2218: }
1.311 schwarze 2219: }
1.76 kristaps 2220:
1.238 schwarze 2221: if (*cp == '\0')
1.277 schwarze 2222: return ROFF_IGN;
1.78 kristaps 2223:
1.220 schwarze 2224: /* Get the custom end marker. */
1.107 kristaps 2225:
1.220 schwarze 2226: iname = cp;
1.402 ! schwarze 2227: namesz = roff_getname(&cp, ln, ppos);
1.220 schwarze 2228:
2229: /* Resolve the end marker if it is indirect. */
2230:
1.238 schwarze 2231: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2232: deftype = ROFFDEF_USER;
2233: name = roff_getstrn(r, iname, namesz, &deftype);
2234: if (name == NULL) {
1.350 schwarze 2235: mandoc_msg(MANDOCERR_STR_UNDEF,
2236: ln, (int)(iname - buf->buf),
1.220 schwarze 2237: "%.*s", (int)namesz, iname);
2238: namesz = 0;
2239: } else
2240: namesz = strlen(name);
2241: } else
2242: name = iname;
2243:
1.213 schwarze 2244: if (namesz)
2245: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2246:
1.238 schwarze 2247: if (*cp != '\0')
1.350 schwarze 2248: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2249: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2250:
1.277 schwarze 2251: return ROFF_IGN;
1.78 kristaps 2252: }
2253:
1.340 schwarze 2254: static int
1.80 kristaps 2255: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2256: {
1.294 schwarze 2257: enum roff_tok t;
1.79 kristaps 2258: int i, j;
2259:
2260: /*
1.385 schwarze 2261: * If a custom end marker is a user-defined or predefined macro
2262: * or a request, interpret it.
1.79 kristaps 2263: */
2264:
2265: if (r->last->end) {
1.130 kristaps 2266: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2267: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2268: break;
2269:
1.238 schwarze 2270: if (r->last->end[j] == '\0' &&
2271: (buf->buf[i] == '\0' ||
2272: buf->buf[i] == ' ' ||
2273: buf->buf[i] == '\t')) {
1.79 kristaps 2274: roffnode_pop(r);
2275: roffnode_cleanscope(r);
2276:
1.238 schwarze 2277: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2278: i++;
2279:
2280: pos = i;
1.238 schwarze 2281: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2282: TOKEN_NONE)
1.277 schwarze 2283: return ROFF_RERUN;
2284: return ROFF_IGN;
1.79 kristaps 2285: }
2286: }
2287:
1.385 schwarze 2288: /* Handle the standard end marker. */
1.79 kristaps 2289:
1.238 schwarze 2290: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.385 schwarze 2291: if (t == ROFF_cblock)
2292: return roff_cblock(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2293:
1.385 schwarze 2294: /* Not an end marker, so append the line to the block. */
1.79 kristaps 2295:
1.385 schwarze 2296: if (tok != ROFF_ig)
2297: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
2298: return ROFF_IGN;
1.79 kristaps 2299: }
2300:
1.340 schwarze 2301: static int
1.80 kristaps 2302: roff_block_text(ROFF_ARGS)
1.78 kristaps 2303: {
2304:
1.238 schwarze 2305: if (tok != ROFF_ig)
2306: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2307:
1.277 schwarze 2308: return ROFF_IGN;
1.78 kristaps 2309: }
2310:
1.375 schwarze 2311: /*
2312: * Check for a closing "\}" and handle it.
2313: * In this function, the final "int *offs" argument is used for
2314: * different purposes than elsewhere:
2315: * Input: *offs == 0: caller wants to discard arguments following \}
2316: * *offs == 1: caller wants to preserve text following \}
2317: * Output: *offs = 0: tell caller to discard input line
2318: * *offs = 1: tell caller to use input line
2319: */
1.340 schwarze 2320: static int
1.375 schwarze 2321: roff_cond_checkend(ROFF_ARGS)
1.82 kristaps 2322: {
1.340 schwarze 2323: char *ep;
2324: int endloop, irc, rr;
1.82 kristaps 2325:
1.340 schwarze 2326: irc = ROFF_IGN;
1.82 kristaps 2327: rr = r->last->rule;
1.340 schwarze 2328: endloop = tok != ROFF_while ? ROFF_IGN :
2329: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2330: if (roffnode_cleanscope(r))
2331: irc |= endloop;
1.144 kristaps 2332:
1.196 schwarze 2333: /*
1.375 schwarze 2334: * If "\}" occurs on a macro line without a preceding macro or
2335: * a text line contains nothing else, drop the line completely.
1.196 schwarze 2336: */
2337:
1.238 schwarze 2338: ep = buf->buf + pos;
1.375 schwarze 2339: if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))
1.198 schwarze 2340: rr = 0;
1.196 schwarze 2341:
1.343 schwarze 2342: /*
1.375 schwarze 2343: * The closing delimiter "\}" rewinds the conditional scope
1.343 schwarze 2344: * but is otherwise ignored when interpreting the line.
2345: */
1.144 kristaps 2346:
1.238 schwarze 2347: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2348: switch (ep[1]) {
2349: case '}':
1.376 schwarze 2350: if (ep[2] == '\0')
2351: ep[0] = '\0';
2352: else if (rr)
1.375 schwarze 2353: ep[1] = '&';
2354: else
2355: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2356: if (roff_ccond(r, ln, ep - buf->buf))
2357: irc |= endloop;
1.318 schwarze 2358: break;
2359: case '\0':
2360: ++ep;
2361: break;
2362: default:
2363: ep += 2;
2364: break;
1.197 schwarze 2365: }
1.177 schwarze 2366: }
1.375 schwarze 2367: *offs = rr;
2368: return irc;
2369: }
1.318 schwarze 2370:
1.375 schwarze 2371: /*
2372: * Parse and process a request or macro line in conditional scope.
2373: */
2374: static int
2375: roff_cond_sub(ROFF_ARGS)
2376: {
2377: struct roffnode *bl;
1.386 schwarze 2378: int irc, rr, spos;
1.375 schwarze 2379: enum roff_tok t;
2380:
2381: rr = 0; /* If arguments follow "\}", skip them. */
2382: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.386 schwarze 2383: spos = pos;
1.368 schwarze 2384: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2385:
1.318 schwarze 2386: /*
1.386 schwarze 2387: * Handle requests and macros if the conditional evaluated
2388: * to true or if they are structurally required.
2389: * The .break request is always handled specially.
1.318 schwarze 2390: */
2391:
1.364 schwarze 2392: if (t == ROFF_break) {
2393: if (irc & ROFF_LOOPMASK)
2394: irc = ROFF_IGN | ROFF_LOOPEXIT;
2395: else if (rr) {
2396: for (bl = r->last; bl != NULL; bl = bl->parent) {
2397: bl->rule = 0;
2398: if (bl->tok == ROFF_while)
2399: break;
2400: }
2401: }
1.386 schwarze 2402: } else if (rr || (t < TOKEN_NONE && roffs[t].flags & ROFFMAC_STRUCT)) {
2403: irc |= roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1.383 schwarze 2404: if (irc & ROFF_WHILE)
2405: irc &= ~(ROFF_LOOPCONT | ROFF_LOOPEXIT);
1.386 schwarze 2406: }
1.340 schwarze 2407: return irc;
1.82 kristaps 2408: }
2409:
1.375 schwarze 2410: /*
2411: * Parse and process a text line in conditional scope.
2412: */
1.340 schwarze 2413: static int
1.82 kristaps 2414: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2415: {
1.375 schwarze 2416: int irc, rr;
1.343 schwarze 2417:
1.375 schwarze 2418: rr = 1; /* If arguments follow "\}", preserve them. */
2419: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.340 schwarze 2420: if (rr)
2421: irc |= ROFF_CONT;
2422: return irc;
1.74 kristaps 2423: }
2424:
1.266 schwarze 2425: /* --- handling of numeric and conditional expressions -------------------- */
2426:
1.204 schwarze 2427: /*
2428: * Parse a single signed integer number. Stop at the first non-digit.
2429: * If there is at least one digit, return success and advance the
2430: * parse point, else return failure and let the parse point unchanged.
2431: * Ignore overflows, treat them just like the C language.
2432: */
1.184 schwarze 2433: static int
1.261 schwarze 2434: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2435: {
1.261 schwarze 2436: int myres, scaled, n, p;
1.206 schwarze 2437:
2438: if (NULL == res)
2439: res = &myres;
1.184 schwarze 2440:
2441: p = *pos;
2442: n = v[p] == '-';
1.261 schwarze 2443: if (n || v[p] == '+')
1.184 schwarze 2444: p++;
2445:
1.261 schwarze 2446: if (flags & ROFFNUM_WHITE)
2447: while (isspace((unsigned char)v[p]))
2448: p++;
2449:
1.184 schwarze 2450: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2451: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2452: if (p == *pos + n)
2453: return 0;
2454:
2455: if (n)
2456: *res = -*res;
2457:
1.254 schwarze 2458: /* Each number may be followed by one optional scaling unit. */
2459:
2460: switch (v[p]) {
2461: case 'f':
1.261 schwarze 2462: scaled = *res * 65536;
1.254 schwarze 2463: break;
2464: case 'i':
1.261 schwarze 2465: scaled = *res * 240;
1.254 schwarze 2466: break;
2467: case 'c':
1.261 schwarze 2468: scaled = *res * 240 / 2.54;
1.254 schwarze 2469: break;
2470: case 'v':
2471: case 'P':
1.261 schwarze 2472: scaled = *res * 40;
1.254 schwarze 2473: break;
2474: case 'm':
2475: case 'n':
1.261 schwarze 2476: scaled = *res * 24;
1.254 schwarze 2477: break;
2478: case 'p':
1.261 schwarze 2479: scaled = *res * 10 / 3;
1.254 schwarze 2480: break;
2481: case 'u':
1.261 schwarze 2482: scaled = *res;
1.254 schwarze 2483: break;
2484: case 'M':
1.261 schwarze 2485: scaled = *res * 6 / 25;
1.254 schwarze 2486: break;
2487: default:
1.261 schwarze 2488: scaled = *res;
1.254 schwarze 2489: p--;
2490: break;
2491: }
1.261 schwarze 2492: if (flags & ROFFNUM_SCALE)
2493: *res = scaled;
1.254 schwarze 2494:
2495: *pos = p + 1;
1.277 schwarze 2496: return 1;
1.184 schwarze 2497: }
2498:
1.198 schwarze 2499: /*
2500: * Evaluate a string comparison condition.
2501: * The first character is the delimiter.
2502: * Succeed if the string up to its second occurrence
1.396 schwarze 2503: * matches the string up to its third occurrence.
1.198 schwarze 2504: * Advance the cursor after the third occurrence
2505: * or lacking that, to the end of the line.
2506: */
2507: static int
2508: roff_evalstrcond(const char *v, int *pos)
2509: {
2510: const char *s1, *s2, *s3;
2511: int match;
2512:
2513: match = 0;
2514: s1 = v + *pos; /* initial delimiter */
2515: s2 = s1 + 1; /* for scanning the first string */
2516: s3 = strchr(s2, *s1); /* for scanning the second string */
2517:
2518: if (NULL == s3) /* found no middle delimiter */
2519: goto out;
2520:
2521: while ('\0' != *++s3) {
2522: if (*s2 != *s3) { /* mismatch */
2523: s3 = strchr(s3, *s1);
2524: break;
2525: }
2526: if (*s3 == *s1) { /* found the final delimiter */
2527: match = 1;
2528: break;
2529: }
2530: s2++;
2531: }
2532:
2533: out:
2534: if (NULL == s3)
2535: s3 = strchr(s2, '\0');
1.242 schwarze 2536: else if (*s3 != '\0')
1.198 schwarze 2537: s3++;
2538: *pos = s3 - v;
1.277 schwarze 2539: return match;
1.198 schwarze 2540: }
2541:
1.204 schwarze 2542: /*
2543: * Evaluate an optionally negated single character, numerical,
2544: * or string condition.
2545: */
1.198 schwarze 2546: static int
1.271 schwarze 2547: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2548: {
1.336 schwarze 2549: const char *start, *end;
2550: char *cp, *name;
2551: size_t sz;
2552: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2553:
1.198 schwarze 2554: if ('!' == v[*pos]) {
2555: wanttrue = 0;
2556: (*pos)++;
2557: } else
2558: wanttrue = 1;
2559:
1.88 kristaps 2560: switch (v[*pos]) {
1.240 schwarze 2561: case '\0':
1.277 schwarze 2562: return 0;
1.207 schwarze 2563: case 'n':
2564: case 'o':
1.88 kristaps 2565: (*pos)++;
1.277 schwarze 2566: return wanttrue;
1.207 schwarze 2567: case 'e':
2568: case 't':
1.239 schwarze 2569: case 'v':
1.88 kristaps 2570: (*pos)++;
1.277 schwarze 2571: return !wanttrue;
1.336 schwarze 2572: case 'c':
2573: do {
2574: (*pos)++;
2575: } while (v[*pos] == ' ');
2576:
2577: /*
2578: * Quirk for groff compatibility:
2579: * The horizontal tab is neither available nor unavailable.
2580: */
2581:
2582: if (v[*pos] == '\t') {
2583: (*pos)++;
2584: return 0;
2585: }
2586:
2587: /* Printable ASCII characters are available. */
2588:
2589: if (v[*pos] != '\\') {
2590: (*pos)++;
2591: return wanttrue;
2592: }
2593:
2594: end = v + ++*pos;
2595: switch (mandoc_escape(&end, &start, &len)) {
2596: case ESCAPE_SPECIAL:
2597: istrue = mchars_spec2cp(start, len) != -1;
2598: break;
2599: case ESCAPE_UNICODE:
2600: istrue = 1;
2601: break;
2602: case ESCAPE_NUMBERED:
2603: istrue = mchars_num2char(start, len) != -1;
2604: break;
2605: default:
2606: istrue = !wanttrue;
2607: break;
2608: }
2609: *pos = end - v;
2610: return istrue == wanttrue;
1.310 schwarze 2611: case 'd':
1.271 schwarze 2612: case 'r':
1.310 schwarze 2613: cp = v + *pos + 1;
2614: while (*cp == ' ')
2615: cp++;
2616: name = cp;
1.402 ! schwarze 2617: sz = roff_getname(&cp, ln, cp - v);
1.315 schwarze 2618: if (sz == 0)
2619: istrue = 0;
2620: else if (v[*pos] == 'r')
2621: istrue = roff_hasregn(r, name, sz);
2622: else {
2623: deftype = ROFFDEF_ANY;
2624: roff_getstrn(r, name, sz, &deftype);
2625: istrue = !!deftype;
2626: }
1.363 schwarze 2627: *pos = (name + sz) - v;
1.310 schwarze 2628: return istrue == wanttrue;
1.88 kristaps 2629: default:
2630: break;
2631: }
2632:
1.241 schwarze 2633: savepos = *pos;
1.402 ! schwarze 2634: if (roff_evalnum(ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2635: return (number > 0) == wanttrue;
1.241 schwarze 2636: else if (*pos == savepos)
1.277 schwarze 2637: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2638: else
1.277 schwarze 2639: return 0;
1.88 kristaps 2640: }
2641:
1.340 schwarze 2642: static int
1.103 kristaps 2643: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2644: {
1.123 schwarze 2645:
1.277 schwarze 2646: return ROFF_IGN;
1.89 kristaps 2647: }
2648:
1.340 schwarze 2649: static int
1.251 schwarze 2650: roff_insec(ROFF_ARGS)
2651: {
2652:
1.350 schwarze 2653: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2654: return ROFF_IGN;
1.251 schwarze 2655: }
2656:
1.340 schwarze 2657: static int
1.251 schwarze 2658: roff_unsupp(ROFF_ARGS)
2659: {
2660:
1.350 schwarze 2661: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2662: return ROFF_IGN;
1.251 schwarze 2663: }
2664:
1.340 schwarze 2665: static int
1.82 kristaps 2666: roff_cond(ROFF_ARGS)
1.74 kristaps 2667: {
1.340 schwarze 2668: int irc;
1.173 schwarze 2669:
2670: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2671:
1.207 schwarze 2672: /*
1.134 kristaps 2673: * An `.el' has no conditional body: it will consume the value
2674: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2675: * defaults to DENY.
1.134 kristaps 2676: *
2677: * If we're not an `el', however, then evaluate the conditional.
2678: */
1.133 kristaps 2679:
1.238 schwarze 2680: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2681: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2682: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2683:
1.134 kristaps 2684: /*
2685: * An if-else will put the NEGATION of the current evaluated
2686: * conditional into the stack of rules.
2687: */
2688:
1.238 schwarze 2689: if (tok == ROFF_ie) {
1.223 schwarze 2690: if (r->rstackpos + 1 == r->rstacksz) {
2691: r->rstacksz += 16;
2692: r->rstack = mandoc_reallocarray(r->rstack,
2693: r->rstacksz, sizeof(int));
1.134 kristaps 2694: }
1.198 schwarze 2695: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2696: }
1.88 kristaps 2697:
2698: /* If the parent has false as its rule, then so do we. */
2699:
1.198 schwarze 2700: if (r->last->parent && !r->last->parent->rule)
2701: r->last->rule = 0;
1.88 kristaps 2702:
2703: /*
1.173 schwarze 2704: * Determine scope.
2705: * If there is nothing on the line after the conditional,
2706: * not even whitespace, use next-line scope.
1.340 schwarze 2707: * Except that .while does not support next-line scope.
1.88 kristaps 2708: */
1.74 kristaps 2709:
1.340 schwarze 2710: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2711: r->last->endspan = 2;
2712: goto out;
2713: }
2714:
1.238 schwarze 2715: while (buf->buf[pos] == ' ')
1.173 schwarze 2716: pos++;
2717:
2718: /* An opening brace requests multiline scope. */
1.75 kristaps 2719:
1.238 schwarze 2720: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2721: r->last->endspan = -1;
2722: pos += 2;
1.272 schwarze 2723: while (buf->buf[pos] == ' ')
2724: pos++;
1.173 schwarze 2725: goto out;
1.207 schwarze 2726: }
1.74 kristaps 2727:
1.77 kristaps 2728: /*
1.173 schwarze 2729: * Anything else following the conditional causes
2730: * single-line scope. Warn if the scope contains
2731: * nothing but trailing whitespace.
1.77 kristaps 2732: */
2733:
1.238 schwarze 2734: if (buf->buf[pos] == '\0')
1.350 schwarze 2735: mandoc_msg(MANDOCERR_COND_EMPTY,
2736: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2737:
1.173 schwarze 2738: r->last->endspan = 1;
1.74 kristaps 2739:
1.173 schwarze 2740: out:
1.75 kristaps 2741: *offs = pos;
1.340 schwarze 2742: irc = ROFF_RERUN;
2743: if (tok == ROFF_while)
2744: irc |= ROFF_WHILE;
2745: return irc;
1.83 schwarze 2746: }
2747:
1.340 schwarze 2748: static int
1.92 schwarze 2749: roff_ds(ROFF_ARGS)
2750: {
1.212 schwarze 2751: char *string;
2752: const char *name;
2753: size_t namesz;
1.96 kristaps 2754:
1.251 schwarze 2755: /* Ignore groff compatibility mode for now. */
2756:
2757: if (tok == ROFF_ds1)
2758: tok = ROFF_ds;
2759: else if (tok == ROFF_as1)
2760: tok = ROFF_as;
2761:
1.96 kristaps 2762: /*
1.212 schwarze 2763: * The first word is the name of the string.
2764: * If it is empty or terminated by an escape sequence,
2765: * abort the `ds' request without defining anything.
1.96 kristaps 2766: */
1.92 schwarze 2767:
1.238 schwarze 2768: name = string = buf->buf + pos;
2769: if (*name == '\0')
1.277 schwarze 2770: return ROFF_IGN;
1.92 schwarze 2771:
1.402 ! schwarze 2772: namesz = roff_getname(&string, ln, pos);
1.363 schwarze 2773: switch (name[namesz]) {
2774: case '\\':
1.277 schwarze 2775: return ROFF_IGN;
1.363 schwarze 2776: case '\t':
2777: string = buf->buf + pos + namesz;
2778: break;
2779: default:
2780: break;
2781: }
1.212 schwarze 2782:
2783: /* Read past the initial double-quote, if any. */
1.238 schwarze 2784: if (*string == '"')
1.92 schwarze 2785: string++;
2786:
1.96 kristaps 2787: /* The rest is the value. */
1.212 schwarze 2788: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2789: ROFF_as == tok);
1.311 schwarze 2790: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2791: return ROFF_IGN;
1.92 schwarze 2792: }
2793:
1.204 schwarze 2794: /*
2795: * Parse a single operator, one or two characters long.
2796: * If the operator is recognized, return success and advance the
2797: * parse point, else return failure and let the parse point unchanged.
2798: */
2799: static int
2800: roff_getop(const char *v, int *pos, char *res)
2801: {
2802:
2803: *res = v[*pos];
2804:
2805: switch (*res) {
1.207 schwarze 2806: case '+':
2807: case '-':
2808: case '*':
2809: case '/':
2810: case '%':
2811: case '&':
2812: case ':':
1.204 schwarze 2813: break;
2814: case '<':
2815: switch (v[*pos + 1]) {
1.207 schwarze 2816: case '=':
1.204 schwarze 2817: *res = 'l';
2818: (*pos)++;
2819: break;
1.207 schwarze 2820: case '>':
1.204 schwarze 2821: *res = '!';
2822: (*pos)++;
2823: break;
1.207 schwarze 2824: case '?':
1.204 schwarze 2825: *res = 'i';
2826: (*pos)++;
2827: break;
2828: default:
2829: break;
2830: }
2831: break;
2832: case '>':
2833: switch (v[*pos + 1]) {
1.207 schwarze 2834: case '=':
1.204 schwarze 2835: *res = 'g';
2836: (*pos)++;
2837: break;
1.207 schwarze 2838: case '?':
1.204 schwarze 2839: *res = 'a';
2840: (*pos)++;
2841: break;
2842: default:
2843: break;
2844: }
2845: break;
2846: case '=':
2847: if ('=' == v[*pos + 1])
2848: (*pos)++;
2849: break;
2850: default:
1.277 schwarze 2851: return 0;
1.204 schwarze 2852: }
2853: (*pos)++;
2854:
1.277 schwarze 2855: return *res;
1.204 schwarze 2856: }
2857:
2858: /*
2859: * Evaluate either a parenthesized numeric expression
2860: * or a single signed integer number.
2861: */
2862: static int
1.402 ! schwarze 2863: roff_evalpar(int ln, const char *v, int *pos, int *res, int flags)
1.204 schwarze 2864: {
2865:
2866: if ('(' != v[*pos])
1.277 schwarze 2867: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2868:
2869: (*pos)++;
1.402 ! schwarze 2870: if ( ! roff_evalnum(ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2871: return 0;
1.204 schwarze 2872:
1.206 schwarze 2873: /*
2874: * Omission of the closing parenthesis
2875: * is an error in validation mode,
2876: * but ignored in evaluation mode.
2877: */
2878:
1.204 schwarze 2879: if (')' == v[*pos])
2880: (*pos)++;
1.206 schwarze 2881: else if (NULL == res)
1.277 schwarze 2882: return 0;
1.204 schwarze 2883:
1.277 schwarze 2884: return 1;
1.204 schwarze 2885: }
2886:
2887: /*
2888: * Evaluate a complete numeric expression.
2889: * Proceed left to right, there is no concept of precedence.
2890: */
2891: static int
1.402 ! schwarze 2892: roff_evalnum(int ln, const char *v, int *pos, int *res, int flags)
1.204 schwarze 2893: {
2894: int mypos, operand2;
2895: char operator;
2896:
2897: if (NULL == pos) {
2898: mypos = 0;
2899: pos = &mypos;
2900: }
2901:
1.261 schwarze 2902: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2903: while (isspace((unsigned char)v[*pos]))
2904: (*pos)++;
2905:
1.402 ! schwarze 2906: if ( ! roff_evalpar(ln, v, pos, res, flags))
1.277 schwarze 2907: return 0;
1.204 schwarze 2908:
2909: while (1) {
1.261 schwarze 2910: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2911: while (isspace((unsigned char)v[*pos]))
2912: (*pos)++;
2913:
2914: if ( ! roff_getop(v, pos, &operator))
2915: break;
2916:
1.261 schwarze 2917: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2918: while (isspace((unsigned char)v[*pos]))
2919: (*pos)++;
2920:
1.402 ! schwarze 2921: if ( ! roff_evalpar(ln, v, pos, &operand2, flags))
1.277 schwarze 2922: return 0;
1.204 schwarze 2923:
1.261 schwarze 2924: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2925: while (isspace((unsigned char)v[*pos]))
2926: (*pos)++;
1.206 schwarze 2927:
2928: if (NULL == res)
2929: continue;
1.204 schwarze 2930:
2931: switch (operator) {
1.207 schwarze 2932: case '+':
1.204 schwarze 2933: *res += operand2;
2934: break;
1.207 schwarze 2935: case '-':
1.204 schwarze 2936: *res -= operand2;
2937: break;
1.207 schwarze 2938: case '*':
1.204 schwarze 2939: *res *= operand2;
2940: break;
1.207 schwarze 2941: case '/':
1.244 schwarze 2942: if (operand2 == 0) {
1.235 schwarze 2943: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2944: ln, *pos, "%s", v);
1.234 kristaps 2945: *res = 0;
2946: break;
2947: }
1.204 schwarze 2948: *res /= operand2;
2949: break;
1.207 schwarze 2950: case '%':
1.244 schwarze 2951: if (operand2 == 0) {
2952: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2953: ln, *pos, "%s", v);
1.244 schwarze 2954: *res = 0;
2955: break;
2956: }
1.204 schwarze 2957: *res %= operand2;
2958: break;
1.207 schwarze 2959: case '<':
1.204 schwarze 2960: *res = *res < operand2;
2961: break;
1.207 schwarze 2962: case '>':
1.204 schwarze 2963: *res = *res > operand2;
2964: break;
1.207 schwarze 2965: case 'l':
1.204 schwarze 2966: *res = *res <= operand2;
2967: break;
1.207 schwarze 2968: case 'g':
1.204 schwarze 2969: *res = *res >= operand2;
2970: break;
1.207 schwarze 2971: case '=':
1.204 schwarze 2972: *res = *res == operand2;
2973: break;
1.207 schwarze 2974: case '!':
1.204 schwarze 2975: *res = *res != operand2;
2976: break;
1.207 schwarze 2977: case '&':
1.204 schwarze 2978: *res = *res && operand2;
2979: break;
1.207 schwarze 2980: case ':':
1.204 schwarze 2981: *res = *res || operand2;
2982: break;
1.207 schwarze 2983: case 'i':
1.204 schwarze 2984: if (operand2 < *res)
2985: *res = operand2;
2986: break;
1.207 schwarze 2987: case 'a':
1.204 schwarze 2988: if (operand2 > *res)
2989: *res = operand2;
2990: break;
2991: default:
2992: abort();
2993: }
2994: }
1.277 schwarze 2995: return 1;
1.204 schwarze 2996: }
2997:
1.266 schwarze 2998: /* --- register management ------------------------------------------------ */
2999:
1.180 schwarze 3000: void
1.187 schwarze 3001: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 3002: {
1.327 schwarze 3003: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 3004: }
3005:
3006: static void
3007: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 3008: int val, char sign, int step)
1.326 schwarze 3009: {
1.180 schwarze 3010: struct roffreg *reg;
3011:
3012: /* Search for an existing register with the same name. */
3013: reg = r->regtab;
3014:
1.326 schwarze 3015: while (reg != NULL && (reg->key.sz != len ||
3016: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 3017: reg = reg->next;
1.147 kristaps 3018:
1.180 schwarze 3019: if (NULL == reg) {
3020: /* Create a new register. */
3021: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 3022: reg->key.p = mandoc_strndup(name, len);
3023: reg->key.sz = len;
1.187 schwarze 3024: reg->val = 0;
1.327 schwarze 3025: reg->step = 0;
1.180 schwarze 3026: reg->next = r->regtab;
3027: r->regtab = reg;
3028: }
3029:
1.187 schwarze 3030: if ('+' == sign)
3031: reg->val += val;
3032: else if ('-' == sign)
3033: reg->val -= val;
3034: else
3035: reg->val = val;
1.327 schwarze 3036: if (step != INT_MIN)
3037: reg->step = step;
1.147 kristaps 3038: }
3039:
1.192 schwarze 3040: /*
3041: * Handle some predefined read-only number registers.
3042: * For now, return -1 if the requested register is not predefined;
3043: * in case a predefined read-only register having the value -1
3044: * were to turn up, another special value would have to be chosen.
3045: */
3046: static int
1.273 schwarze 3047: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 3048: {
3049:
3050: switch (*name) {
1.273 schwarze 3051: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 3052: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 3053: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 3054: return 0;
1.207 schwarze 3055: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 3056: return 1;
1.207 schwarze 3057: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 3058: return 24;
1.207 schwarze 3059: case 'j': /* Always adjust left margin only. */
1.277 schwarze 3060: return 0;
1.401 schwarze 3061: case 'l': /* Fixed line width for DocBook. */
3062: return 78 * 24;
1.207 schwarze 3063: case 'T': /* Some output device is always defined. */
1.277 schwarze 3064: return 1;
1.207 schwarze 3065: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 3066: return 40;
1.192 schwarze 3067: default:
1.277 schwarze 3068: return -1;
1.192 schwarze 3069: }
3070: }
3071:
1.181 schwarze 3072: int
1.326 schwarze 3073: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 3074: {
1.327 schwarze 3075: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 3076: }
3077:
3078: static int
1.327 schwarze 3079: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 3080: {
3081: struct roffreg *reg;
1.192 schwarze 3082: int val;
3083:
3084: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3085: val = roff_getregro(r, name + 1);
1.192 schwarze 3086: if (-1 != val)
1.277 schwarze 3087: return val;
1.192 schwarze 3088: }
1.181 schwarze 3089:
1.327 schwarze 3090: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 3091: if (len == reg->key.sz &&
1.327 schwarze 3092: 0 == strncmp(name, reg->key.p, len)) {
3093: switch (sign) {
3094: case '+':
3095: reg->val += reg->step;
3096: break;
3097: case '-':
3098: reg->val -= reg->step;
3099: break;
3100: default:
3101: break;
3102: }
1.277 schwarze 3103: return reg->val;
1.327 schwarze 3104: }
3105: }
1.271 schwarze 3106:
1.327 schwarze 3107: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 3108: return 0;
1.271 schwarze 3109: }
3110:
3111: static int
3112: roff_hasregn(const struct roff *r, const char *name, size_t len)
3113: {
3114: struct roffreg *reg;
3115: int val;
3116:
3117: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3118: val = roff_getregro(r, name + 1);
1.271 schwarze 3119: if (-1 != val)
1.277 schwarze 3120: return 1;
1.271 schwarze 3121: }
3122:
3123: for (reg = r->regtab; reg; reg = reg->next)
3124: if (len == reg->key.sz &&
3125: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 3126: return 1;
1.147 kristaps 3127:
1.277 schwarze 3128: return 0;
1.147 kristaps 3129: }
3130:
1.180 schwarze 3131: static void
3132: roff_freereg(struct roffreg *reg)
1.147 kristaps 3133: {
1.180 schwarze 3134: struct roffreg *old_reg;
1.147 kristaps 3135:
1.180 schwarze 3136: while (NULL != reg) {
3137: free(reg->key.p);
3138: old_reg = reg;
3139: reg = reg->next;
3140: free(old_reg);
3141: }
1.147 kristaps 3142: }
1.92 schwarze 3143:
1.340 schwarze 3144: static int
1.89 kristaps 3145: roff_nr(ROFF_ARGS)
1.83 schwarze 3146: {
1.327 schwarze 3147: char *key, *val, *step;
1.212 schwarze 3148: size_t keysz;
1.327 schwarze 3149: int iv, is, len;
1.187 schwarze 3150: char sign;
1.89 kristaps 3151:
1.238 schwarze 3152: key = val = buf->buf + pos;
3153: if (*key == '\0')
1.277 schwarze 3154: return ROFF_IGN;
1.212 schwarze 3155:
1.402 ! schwarze 3156: keysz = roff_getname(&val, ln, pos);
1.363 schwarze 3157: if (key[keysz] == '\\' || key[keysz] == '\t')
1.277 schwarze 3158: return ROFF_IGN;
1.89 kristaps 3159:
1.187 schwarze 3160: sign = *val;
1.238 schwarze 3161: if (sign == '+' || sign == '-')
1.187 schwarze 3162: val++;
3163:
1.327 schwarze 3164: len = 0;
1.402 ! schwarze 3165: if (roff_evalnum(ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
1.327 schwarze 3166: return ROFF_IGN;
3167:
3168: step = val + len;
3169: while (isspace((unsigned char)*step))
3170: step++;
1.402 ! schwarze 3171: if (roff_evalnum(ln, step, NULL, &is, 0) == 0)
1.327 schwarze 3172: is = INT_MIN;
1.109 kristaps 3173:
1.327 schwarze 3174: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 3175: return ROFF_IGN;
1.203 schwarze 3176: }
3177:
1.340 schwarze 3178: static int
1.203 schwarze 3179: roff_rr(ROFF_ARGS)
3180: {
3181: struct roffreg *reg, **prev;
1.212 schwarze 3182: char *name, *cp;
3183: size_t namesz;
1.203 schwarze 3184:
1.238 schwarze 3185: name = cp = buf->buf + pos;
3186: if (*name == '\0')
1.277 schwarze 3187: return ROFF_IGN;
1.402 ! schwarze 3188: namesz = roff_getname(&cp, ln, pos);
1.212 schwarze 3189: name[namesz] = '\0';
1.203 schwarze 3190:
3191: prev = &r->regtab;
3192: while (1) {
3193: reg = *prev;
1.238 schwarze 3194: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 3195: break;
3196: prev = ®->next;
3197: }
1.238 schwarze 3198: if (reg != NULL) {
1.203 schwarze 3199: *prev = reg->next;
3200: free(reg->key.p);
3201: free(reg);
3202: }
1.277 schwarze 3203: return ROFF_IGN;
1.122 schwarze 3204: }
3205:
1.266 schwarze 3206: /* --- handler functions for roff requests -------------------------------- */
3207:
1.340 schwarze 3208: static int
1.122 schwarze 3209: roff_rm(ROFF_ARGS)
3210: {
3211: const char *name;
3212: char *cp;
1.212 schwarze 3213: size_t namesz;
1.122 schwarze 3214:
1.238 schwarze 3215: cp = buf->buf + pos;
3216: while (*cp != '\0') {
1.212 schwarze 3217: name = cp;
1.402 ! schwarze 3218: namesz = roff_getname(&cp, ln, (int)(cp - buf->buf));
1.212 schwarze 3219: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 3220: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.363 schwarze 3221: if (name[namesz] == '\\' || name[namesz] == '\t')
1.212 schwarze 3222: break;
1.122 schwarze 3223: }
1.277 schwarze 3224: return ROFF_IGN;
1.178 schwarze 3225: }
3226:
1.340 schwarze 3227: static int
1.178 schwarze 3228: roff_it(ROFF_ARGS)
3229: {
3230: int iv;
3231:
3232: /* Parse the number of lines. */
1.261 schwarze 3233:
1.402 ! schwarze 3234: if ( ! roff_evalnum(ln, buf->buf, &pos, &iv, 0)) {
1.350 schwarze 3235: mandoc_msg(MANDOCERR_IT_NONUM,
3236: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 3237: return ROFF_IGN;
1.178 schwarze 3238: }
3239:
1.262 schwarze 3240: while (isspace((unsigned char)buf->buf[pos]))
3241: pos++;
3242:
3243: /*
3244: * Arm the input line trap.
3245: * Special-casing "an-trap" is an ugly workaround to cope
3246: * with DocBook stupidly fiddling with man(7) internals.
3247: */
1.261 schwarze 3248:
1.178 schwarze 3249: roffit_lines = iv;
1.262 schwarze 3250: roffit_macro = mandoc_strdup(iv != 1 ||
3251: strcmp(buf->buf + pos, "an-trap") ?
3252: buf->buf + pos : "br");
1.277 schwarze 3253: return ROFF_IGN;
1.175 schwarze 3254: }
3255:
1.340 schwarze 3256: static int
1.175 schwarze 3257: roff_Dd(ROFF_ARGS)
3258: {
1.315 schwarze 3259: int mask;
3260: enum roff_tok t, te;
1.227 schwarze 3261:
1.315 schwarze 3262: switch (tok) {
3263: case ROFF_Dd:
3264: tok = MDOC_Dd;
3265: te = MDOC_MAX;
3266: if (r->format == 0)
3267: r->format = MPARSE_MDOC;
3268: mask = MPARSE_MDOC | MPARSE_QUICK;
3269: break;
3270: case ROFF_TH:
3271: tok = MAN_TH;
3272: te = MAN_MAX;
3273: if (r->format == 0)
3274: r->format = MPARSE_MAN;
3275: mask = MPARSE_QUICK;
3276: break;
3277: default:
3278: abort();
3279: }
3280: if ((r->options & mask) == 0)
3281: for (t = tok; t < te; t++)
3282: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3283: return ROFF_CONT;
1.109 kristaps 3284: }
3285:
1.340 schwarze 3286: static int
1.109 kristaps 3287: roff_TE(ROFF_ARGS)
3288: {
1.361 schwarze 3289: r->man->flags &= ~ROFF_NONOFILL;
1.321 schwarze 3290: if (r->tbl == NULL) {
1.350 schwarze 3291: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3292: return ROFF_IGN;
3293: }
1.346 schwarze 3294: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3295: r->tbl = NULL;
1.258 schwarze 3296: free(buf->buf);
3297: buf->buf = mandoc_strdup(".sp");
3298: buf->sz = 4;
1.329 schwarze 3299: *offs = 0;
1.277 schwarze 3300: return ROFF_REPARSE;
1.258 schwarze 3301: }
1.321 schwarze 3302: r->tbl = NULL;
1.277 schwarze 3303: return ROFF_IGN;
1.112 kristaps 3304: }
3305:
1.340 schwarze 3306: static int
1.112 kristaps 3307: roff_T_(ROFF_ARGS)
3308: {
3309:
3310: if (NULL == r->tbl)
1.350 schwarze 3311: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3312: else
1.296 schwarze 3313: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3314:
1.277 schwarze 3315: return ROFF_IGN;
1.109 kristaps 3316: }
3317:
1.230 schwarze 3318: /*
3319: * Handle in-line equation delimiters.
3320: */
1.340 schwarze 3321: static int
1.238 schwarze 3322: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3323: {
1.233 schwarze 3324: char *cp1, *cp2;
3325: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3326:
1.230 schwarze 3327: /*
3328: * Outside equations, look for an opening delimiter.
3329: * If we are inside an equation, we already know it is
3330: * in-line, or this function wouldn't have been called;
3331: * so look for a closing delimiter.
3332: */
3333:
1.238 schwarze 3334: cp1 = buf->buf + pos;
1.230 schwarze 3335: cp2 = strchr(cp1, r->eqn == NULL ?
3336: r->last_eqn->odelim : r->last_eqn->cdelim);
3337: if (cp2 == NULL)
1.277 schwarze 3338: return ROFF_CONT;
1.230 schwarze 3339:
1.233 schwarze 3340: *cp2++ = '\0';
3341: bef_pr = bef_nl = aft_nl = aft_pr = "";
3342:
3343: /* Handle preceding text, protecting whitespace. */
3344:
1.238 schwarze 3345: if (*buf->buf != '\0') {
1.233 schwarze 3346: if (r->eqn == NULL)
3347: bef_pr = "\\&";
3348: bef_nl = "\n";
3349: }
3350:
3351: /*
3352: * Prepare replacing the delimiter with an equation macro
3353: * and drop leading white space from the equation.
3354: */
1.230 schwarze 3355:
1.233 schwarze 3356: if (r->eqn == NULL) {
3357: while (*cp2 == ' ')
3358: cp2++;
3359: mac = ".EQ";
3360: } else
3361: mac = ".EN";
3362:
3363: /* Handle following text, protecting whitespace. */
3364:
3365: if (*cp2 != '\0') {
3366: aft_nl = "\n";
3367: if (r->eqn != NULL)
3368: aft_pr = "\\&";
3369: }
3370:
3371: /* Do the actual replacement. */
3372:
1.238 schwarze 3373: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3374: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3375: free(buf->buf);
3376: buf->buf = cp1;
1.230 schwarze 3377:
3378: /* Toggle the in-line state of the eqn subsystem. */
3379:
3380: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3381: return ROFF_REPARSE;
1.151 kristaps 3382: }
3383:
1.340 schwarze 3384: static int
1.235 schwarze 3385: roff_EQ(ROFF_ARGS)
1.125 kristaps 3386: {
1.319 schwarze 3387: struct roff_node *n;
3388:
1.356 schwarze 3389: if (r->man->meta.macroset == MACROSET_MAN)
1.322 schwarze 3390: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3391: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3392: if (ln > r->man->last->line)
3393: n->flags |= NODE_LINE;
1.348 schwarze 3394: n->eqn = eqn_box_new();
1.319 schwarze 3395: roff_node_append(r->man, n);
3396: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3397:
1.238 schwarze 3398: assert(r->eqn == NULL);
1.319 schwarze 3399: if (r->last_eqn == NULL)
1.351 schwarze 3400: r->last_eqn = eqn_alloc();
1.319 schwarze 3401: else
3402: eqn_reset(r->last_eqn);
3403: r->eqn = r->last_eqn;
3404: r->eqn->node = n;
1.151 kristaps 3405:
1.238 schwarze 3406: if (buf->buf[pos] != '\0')
1.350 schwarze 3407: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3408: ".EQ %s", buf->buf + pos);
1.151 kristaps 3409:
1.277 schwarze 3410: return ROFF_IGN;
1.125 kristaps 3411: }
3412:
1.340 schwarze 3413: static int
1.125 kristaps 3414: roff_EN(ROFF_ARGS)
3415: {
1.319 schwarze 3416: if (r->eqn != NULL) {
3417: eqn_parse(r->eqn);
3418: r->eqn = NULL;
3419: } else
1.350 schwarze 3420: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3421: if (buf->buf[pos] != '\0')
1.350 schwarze 3422: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3423: "EN %s", buf->buf + pos);
1.277 schwarze 3424: return ROFF_IGN;
1.125 kristaps 3425: }
3426:
1.340 schwarze 3427: static int
1.109 kristaps 3428: roff_TS(ROFF_ARGS)
3429: {
1.321 schwarze 3430: if (r->tbl != NULL) {
1.350 schwarze 3431: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3432: tbl_end(r->tbl, 0);
1.115 kristaps 3433: }
1.361 schwarze 3434: r->man->flags |= ROFF_NONOFILL;
1.351 schwarze 3435: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.346 schwarze 3436: if (r->last_tbl == NULL)
1.321 schwarze 3437: r->first_tbl = r->tbl;
3438: r->last_tbl = r->tbl;
1.297 schwarze 3439: return ROFF_IGN;
3440: }
3441:
1.340 schwarze 3442: static int
1.358 schwarze 3443: roff_noarg(ROFF_ARGS)
3444: {
3445: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3446: man_breakscope(r->man, tok);
3447: if (tok == ROFF_brp)
3448: tok = ROFF_br;
3449: roff_elem_alloc(r->man, ln, ppos, tok);
3450: if (buf->buf[pos] != '\0')
3451: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3452: "%s %s", roff_name[tok], buf->buf + pos);
3453: if (tok == ROFF_nf)
3454: r->man->flags |= ROFF_NOFILL;
3455: else if (tok == ROFF_fi)
3456: r->man->flags &= ~ROFF_NOFILL;
3457: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3458: r->man->next = ROFF_NEXT_SIBLING;
3459: return ROFF_IGN;
3460: }
3461:
3462: static int
1.297 schwarze 3463: roff_onearg(ROFF_ARGS)
3464: {
3465: struct roff_node *n;
3466: char *cp;
1.305 schwarze 3467: int npos;
1.297 schwarze 3468:
1.302 schwarze 3469: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3470: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3471: tok == ROFF_ti))
1.302 schwarze 3472: man_breakscope(r->man, tok);
3473:
1.309 schwarze 3474: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3475: r->man->last = roffce_node;
3476: r->man->next = ROFF_NEXT_SIBLING;
3477: }
3478:
1.297 schwarze 3479: roff_elem_alloc(r->man, ln, ppos, tok);
3480: n = r->man->last;
3481:
3482: cp = buf->buf + pos;
3483: if (*cp != '\0') {
3484: while (*cp != '\0' && *cp != ' ')
3485: cp++;
3486: while (*cp == ' ')
3487: *cp++ = '\0';
3488: if (*cp != '\0')
1.350 schwarze 3489: mandoc_msg(MANDOCERR_ARG_EXCESS,
3490: ln, (int)(cp - buf->buf),
1.297 schwarze 3491: "%s ... %s", roff_name[tok], cp);
3492: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3493: }
3494:
1.309 schwarze 3495: if (tok == ROFF_ce || tok == ROFF_rj) {
3496: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3497: roff_word_alloc(r->man, ln, pos, "1");
3498: r->man->last->flags |= NODE_NOSRC;
3499: }
3500: npos = 0;
1.402 ! schwarze 3501: if (roff_evalnum(ln, r->man->last->string, &npos,
1.305 schwarze 3502: &roffce_lines, 0) == 0) {
1.350 schwarze 3503: mandoc_msg(MANDOCERR_CE_NONUM,
3504: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3505: roffce_lines = 1;
3506: }
3507: if (roffce_lines < 1) {
3508: r->man->last = r->man->last->parent;
3509: roffce_node = NULL;
3510: roffce_lines = 0;
3511: } else
3512: roffce_node = r->man->last->parent;
3513: } else {
3514: n->flags |= NODE_VALID | NODE_ENDED;
3515: r->man->last = n;
3516: }
3517: n->flags |= NODE_LINE;
1.300 schwarze 3518: r->man->next = ROFF_NEXT_SIBLING;
3519: return ROFF_IGN;
3520: }
3521:
1.340 schwarze 3522: static int
1.300 schwarze 3523: roff_manyarg(ROFF_ARGS)
3524: {
3525: struct roff_node *n;
3526: char *sp, *ep;
3527:
3528: roff_elem_alloc(r->man, ln, ppos, tok);
3529: n = r->man->last;
3530:
3531: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3532: while (*ep != '\0' && *ep != ' ')
3533: ep++;
3534: while (*ep == ' ')
3535: *ep++ = '\0';
3536: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3537: }
3538:
3539: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3540: r->man->last = n;
3541: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3542: return ROFF_IGN;
1.251 schwarze 3543: }
3544:
1.340 schwarze 3545: static int
1.311 schwarze 3546: roff_als(ROFF_ARGS)
3547: {
3548: char *oldn, *newn, *end, *value;
3549: size_t oldsz, newsz, valsz;
3550:
3551: newn = oldn = buf->buf + pos;
3552: if (*newn == '\0')
3553: return ROFF_IGN;
3554:
1.402 ! schwarze 3555: newsz = roff_getname(&oldn, ln, pos);
1.363 schwarze 3556: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.311 schwarze 3557: return ROFF_IGN;
3558:
3559: end = oldn;
1.402 ! schwarze 3560: oldsz = roff_getname(&end, ln, oldn - buf->buf);
1.311 schwarze 3561: if (oldsz == 0)
3562: return ROFF_IGN;
3563:
1.338 schwarze 3564: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3565: (int)oldsz, oldn);
1.311 schwarze 3566: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3567: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3568: free(value);
1.364 schwarze 3569: return ROFF_IGN;
3570: }
3571:
3572: /*
3573: * The .break request only makes sense inside conditionals,
3574: * and that case is already handled in roff_cond_sub().
3575: */
3576: static int
3577: roff_break(ROFF_ARGS)
3578: {
3579: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.296 schwarze 3580: return ROFF_IGN;
1.92 schwarze 3581: }
3582:
1.340 schwarze 3583: static int
1.174 kristaps 3584: roff_cc(ROFF_ARGS)
3585: {
3586: const char *p;
3587:
1.238 schwarze 3588: p = buf->buf + pos;
1.174 kristaps 3589:
1.238 schwarze 3590: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3591: r->control = '\0';
1.174 kristaps 3592:
1.238 schwarze 3593: if (*p != '\0')
1.350 schwarze 3594: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3595: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3596:
1.341 schwarze 3597: return ROFF_IGN;
3598: }
3599:
3600: static int
3601: roff_char(ROFF_ARGS)
3602: {
3603: const char *p, *kp, *vp;
3604: size_t ksz, vsz;
3605: int font;
3606:
3607: /* Parse the character to be replaced. */
3608:
3609: kp = buf->buf + pos;
3610: p = kp + 1;
3611: if (*kp == '\0' || (*kp == '\\' &&
3612: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3613: (*p != ' ' && *p != '\0')) {
1.350 schwarze 3614: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3615: return ROFF_IGN;
3616: }
3617: ksz = p - kp;
3618: while (*p == ' ')
3619: p++;
3620:
3621: /*
3622: * If the replacement string contains a font escape sequence,
3623: * we have to restore the font at the end.
3624: */
3625:
3626: vp = p;
3627: vsz = strlen(p);
3628: font = 0;
3629: while (*p != '\0') {
3630: if (*p++ != '\\')
3631: continue;
3632: switch (mandoc_escape(&p, NULL, NULL)) {
3633: case ESCAPE_FONT:
3634: case ESCAPE_FONTROMAN:
3635: case ESCAPE_FONTITALIC:
3636: case ESCAPE_FONTBOLD:
3637: case ESCAPE_FONTBI:
1.378 schwarze 3638: case ESCAPE_FONTCR:
3639: case ESCAPE_FONTCB:
3640: case ESCAPE_FONTCI:
1.341 schwarze 3641: case ESCAPE_FONTPREV:
3642: font++;
3643: break;
3644: default:
3645: break;
3646: }
3647: }
3648: if (font > 1)
1.350 schwarze 3649: mandoc_msg(MANDOCERR_CHAR_FONT,
3650: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3651:
3652: /*
3653: * Approximate the effect of .char using the .tr tables.
3654: * XXX In groff, .char and .tr interact differently.
3655: */
3656:
3657: if (ksz == 1) {
3658: if (r->xtab == NULL)
3659: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3660: assert((unsigned int)*kp < 128);
3661: free(r->xtab[(int)*kp].p);
3662: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3663: "%s%s", vp, font ? "\fP" : "");
3664: } else {
3665: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3666: if (font)
3667: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3668: }
1.277 schwarze 3669: return ROFF_IGN;
1.174 kristaps 3670: }
3671:
1.340 schwarze 3672: static int
1.303 schwarze 3673: roff_ec(ROFF_ARGS)
3674: {
3675: const char *p;
3676:
3677: p = buf->buf + pos;
3678: if (*p == '\0')
3679: r->escape = '\\';
3680: else {
3681: r->escape = *p;
3682: if (*++p != '\0')
1.350 schwarze 3683: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3684: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3685: }
3686: return ROFF_IGN;
3687: }
3688:
1.340 schwarze 3689: static int
1.303 schwarze 3690: roff_eo(ROFF_ARGS)
3691: {
3692: r->escape = '\0';
3693: if (buf->buf[pos] != '\0')
1.350 schwarze 3694: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3695: ln, pos, "eo %s", buf->buf + pos);
1.384 schwarze 3696: return ROFF_IGN;
3697: }
3698:
3699: static int
3700: roff_mc(ROFF_ARGS)
3701: {
3702: struct roff_node *n;
3703: char *cp;
3704:
3705: /* Parse the first argument. */
3706:
3707: cp = buf->buf + pos;
3708: if (*cp != '\0')
3709: cp++;
3710: if (buf->buf[pos] == '\\') {
3711: switch (mandoc_escape((const char **)&cp, NULL, NULL)) {
3712: case ESCAPE_SPECIAL:
3713: case ESCAPE_UNICODE:
3714: case ESCAPE_NUMBERED:
3715: break;
3716: default:
3717: *cp = '\0';
3718: mandoc_msg(MANDOCERR_MC_ESC, ln, pos,
3719: "mc %s", buf->buf + pos);
3720: buf->buf[pos] = '\0';
3721: break;
3722: }
3723: }
3724:
3725: /* Ignore additional arguments. */
3726:
3727: while (*cp == ' ')
3728: *cp++ = '\0';
3729: if (*cp != '\0') {
3730: mandoc_msg(MANDOCERR_MC_DIST, ln, (int)(cp - buf->buf),
3731: "mc ... %s", cp);
3732: *cp = '\0';
3733: }
3734:
3735: /* Create the .mc node. */
3736:
3737: roff_elem_alloc(r->man, ln, ppos, tok);
3738: n = r->man->last;
3739: if (buf->buf[pos] != '\0')
3740: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
3741: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3742: r->man->last = n;
3743: r->man->next = ROFF_NEXT_SIBLING;
1.303 schwarze 3744: return ROFF_IGN;
1.330 schwarze 3745: }
3746:
1.340 schwarze 3747: static int
1.330 schwarze 3748: roff_nop(ROFF_ARGS)
3749: {
3750: while (buf->buf[pos] == ' ')
3751: pos++;
3752: *offs = pos;
3753: return ROFF_RERUN;
1.303 schwarze 3754: }
3755:
1.340 schwarze 3756: static int
1.164 kristaps 3757: roff_tr(ROFF_ARGS)
3758: {
3759: const char *p, *first, *second;
3760: size_t fsz, ssz;
3761:
1.238 schwarze 3762: p = buf->buf + pos;
1.164 kristaps 3763:
1.238 schwarze 3764: if (*p == '\0') {
1.350 schwarze 3765: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3766: return ROFF_IGN;
1.164 kristaps 3767: }
3768:
1.238 schwarze 3769: while (*p != '\0') {
1.164 kristaps 3770: fsz = ssz = 1;
3771:
3772: first = p++;
1.238 schwarze 3773: if (*first == '\\') {
1.394 schwarze 3774: if (mandoc_escape(&p, NULL, NULL) == ESCAPE_ERROR)
1.277 schwarze 3775: return ROFF_IGN;
1.164 kristaps 3776: fsz = (size_t)(p - first);
3777: }
3778:
3779: second = p++;
1.238 schwarze 3780: if (*second == '\\') {
1.394 schwarze 3781: if (mandoc_escape(&p, NULL, NULL) == ESCAPE_ERROR)
1.277 schwarze 3782: return ROFF_IGN;
1.164 kristaps 3783: ssz = (size_t)(p - second);
1.238 schwarze 3784: } else if (*second == '\0') {
1.350 schwarze 3785: mandoc_msg(MANDOCERR_TR_ODD, ln,
3786: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3787: second = " ";
1.165 kristaps 3788: p--;
1.164 kristaps 3789: }
3790:
1.167 kristaps 3791: if (fsz > 1) {
1.207 schwarze 3792: roff_setstrn(&r->xmbtab, first, fsz,
3793: second, ssz, 0);
1.167 kristaps 3794: continue;
3795: }
3796:
1.238 schwarze 3797: if (r->xtab == NULL)
1.207 schwarze 3798: r->xtab = mandoc_calloc(128,
3799: sizeof(struct roffstr));
1.167 kristaps 3800:
3801: free(r->xtab[(int)*first].p);
3802: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3803: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3804: }
3805:
1.277 schwarze 3806: return ROFF_IGN;
1.164 kristaps 3807: }
3808:
1.339 schwarze 3809: /*
3810: * Implementation of the .return request.
3811: * There is no need to call roff_userret() from here.
3812: * The read module will call that after rewinding the reader stack
3813: * to the place from where the current macro was called.
3814: */
1.340 schwarze 3815: static int
1.339 schwarze 3816: roff_return(ROFF_ARGS)
3817: {
3818: if (r->mstackpos >= 0)
1.340 schwarze 3819: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3820:
1.350 schwarze 3821: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3822: return ROFF_IGN;
3823: }
3824:
1.340 schwarze 3825: static int
1.306 schwarze 3826: roff_rn(ROFF_ARGS)
3827: {
3828: const char *value;
3829: char *oldn, *newn, *end;
3830: size_t oldsz, newsz;
1.315 schwarze 3831: int deftype;
1.306 schwarze 3832:
3833: oldn = newn = buf->buf + pos;
3834: if (*oldn == '\0')
3835: return ROFF_IGN;
3836:
1.402 ! schwarze 3837: oldsz = roff_getname(&newn, ln, pos);
1.363 schwarze 3838: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.306 schwarze 3839: return ROFF_IGN;
3840:
3841: end = newn;
1.402 ! schwarze 3842: newsz = roff_getname(&end, ln, newn - buf->buf);
1.306 schwarze 3843: if (newsz == 0)
3844: return ROFF_IGN;
3845:
1.315 schwarze 3846: deftype = ROFFDEF_ANY;
3847: value = roff_getstrn(r, oldn, oldsz, &deftype);
3848: switch (deftype) {
3849: case ROFFDEF_USER:
1.306 schwarze 3850: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3851: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3852: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3853: break;
3854: case ROFFDEF_PRE:
3855: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3856: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3857: break;
3858: case ROFFDEF_REN:
1.306 schwarze 3859: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3860: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3861: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3862: break;
3863: case ROFFDEF_STD:
1.306 schwarze 3864: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3865: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3866: break;
3867: default:
3868: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3869: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3870: break;
3871: }
1.306 schwarze 3872: return ROFF_IGN;
3873: }
3874:
1.340 schwarze 3875: static int
1.339 schwarze 3876: roff_shift(ROFF_ARGS)
3877: {
3878: struct mctx *ctx;
1.382 schwarze 3879: int argpos, levels, i;
1.339 schwarze 3880:
1.382 schwarze 3881: argpos = pos;
1.339 schwarze 3882: levels = 1;
3883: if (buf->buf[pos] != '\0' &&
1.402 ! schwarze 3884: roff_evalnum(ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 schwarze 3885: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3886: ln, pos, "shift %s", buf->buf + pos);
3887: levels = 1;
3888: }
3889: if (r->mstackpos < 0) {
1.350 schwarze 3890: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3891: return ROFF_IGN;
3892: }
3893: ctx = r->mstack + r->mstackpos;
3894: if (levels > ctx->argc) {
1.350 schwarze 3895: mandoc_msg(MANDOCERR_SHIFT,
1.382 schwarze 3896: ln, argpos, "%d, but max is %d", levels, ctx->argc);
1.339 schwarze 3897: levels = ctx->argc;
1.382 schwarze 3898: }
3899: if (levels < 0) {
3900: mandoc_msg(MANDOCERR_ARG_NEG, ln, argpos, "shift %d", levels);
3901: levels = 0;
1.339 schwarze 3902: }
3903: if (levels == 0)
3904: return ROFF_IGN;
3905: for (i = 0; i < levels; i++)
3906: free(ctx->argv[i]);
3907: ctx->argc -= levels;
3908: for (i = 0; i < ctx->argc; i++)
3909: ctx->argv[i] = ctx->argv[i + levels];
3910: return ROFF_IGN;
3911: }
3912:
1.340 schwarze 3913: static int
1.105 kristaps 3914: roff_so(ROFF_ARGS)
3915: {
1.249 schwarze 3916: char *name, *cp;
1.105 kristaps 3917:
1.238 schwarze 3918: name = buf->buf + pos;
1.350 schwarze 3919: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3920:
3921: /*
3922: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3923: * opening anything that's not in our cwd or anything beneath
3924: * it. Thus, explicitly disallow traversing up the file-system
3925: * or using absolute paths.
3926: */
3927:
1.238 schwarze 3928: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 schwarze 3929: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3930: buf->sz = mandoc_asprintf(&cp,
3931: ".sp\nSee the file %s.\n.sp", name) + 1;
3932: free(buf->buf);
3933: buf->buf = cp;
3934: *offs = 0;
1.277 schwarze 3935: return ROFF_REPARSE;
1.105 kristaps 3936: }
3937:
3938: *offs = pos;
1.277 schwarze 3939: return ROFF_SO;
1.105 kristaps 3940: }
1.92 schwarze 3941:
1.266 schwarze 3942: /* --- user defined strings and macros ------------------------------------ */
3943:
1.340 schwarze 3944: static int
1.106 kristaps 3945: roff_userdef(ROFF_ARGS)
1.99 kristaps 3946: {
1.339 schwarze 3947: struct mctx *ctx;
3948: char *arg, *ap, *dst, *src;
3949: size_t sz;
3950:
1.365 schwarze 3951: /* If the macro is empty, ignore it altogether. */
3952:
3953: if (*r->current_string == '\0')
3954: return ROFF_IGN;
3955:
1.339 schwarze 3956: /* Initialize a new macro stack context. */
3957:
3958: if (++r->mstackpos == r->mstacksz) {
3959: r->mstack = mandoc_recallocarray(r->mstack,
3960: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3961: r->mstacksz += 8;
3962: }
3963: ctx = r->mstack + r->mstackpos;
3964: ctx->argc = 0;
3965:
3966: /*
3967: * Collect pointers to macro argument strings,
3968: * NUL-terminating them and escaping quotes.
3969: */
3970:
3971: src = buf->buf + pos;
3972: while (*src != '\0') {
3973: if (ctx->argc == ctx->argsz) {
3974: ctx->argsz += 8;
3975: ctx->argv = mandoc_reallocarray(ctx->argv,
3976: ctx->argsz, sizeof(*ctx->argv));
3977: }
1.355 schwarze 3978: arg = roff_getarg(r, &src, ln, &pos);
1.339 schwarze 3979: sz = 1; /* For the terminating NUL. */
3980: for (ap = arg; *ap != '\0'; ap++)
3981: sz += *ap == '"' ? 4 : 1;
3982: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3983: for (ap = arg; *ap != '\0'; ap++) {
3984: if (*ap == '"') {
3985: memcpy(dst, "\\(dq", 4);
3986: dst += 4;
3987: } else
3988: *dst++ = *ap;
1.106 kristaps 3989: }
1.339 schwarze 3990: *dst = '\0';
1.355 schwarze 3991: free(arg);
1.337 schwarze 3992: }
3993:
1.339 schwarze 3994: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3995:
1.238 schwarze 3996: free(buf->buf);
1.339 schwarze 3997: buf->buf = mandoc_strdup(r->current_string);
3998: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3999: *offs = 0;
1.106 kristaps 4000:
1.365 schwarze 4001: return buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 4002: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 4003: }
1.121 schwarze 4004:
1.306 schwarze 4005: /*
4006: * Calling a high-level macro that was renamed with .rn.
4007: * r->current_string has already been set up by roff_parse().
4008: */
1.340 schwarze 4009: static int
1.306 schwarze 4010: roff_renamed(ROFF_ARGS)
4011: {
4012: char *nbuf;
4013:
1.315 schwarze 4014: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
4015: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 4016: free(buf->buf);
4017: buf->buf = nbuf;
1.329 schwarze 4018: *offs = 0;
1.306 schwarze 4019: return ROFF_CONT;
4020: }
4021:
1.362 schwarze 4022: /*
4023: * Measure the length in bytes of the roff identifier at *cpp
4024: * and advance the pointer to the next word.
4025: */
1.212 schwarze 4026: static size_t
1.402 ! schwarze 4027: roff_getname(char **cpp, int ln, int pos)
1.121 schwarze 4028: {
4029: char *name, *cp;
1.393 schwarze 4030: int namesz, inam, iend;
1.121 schwarze 4031:
4032: name = *cpp;
1.362 schwarze 4033: if (*name == '\0')
1.277 schwarze 4034: return 0;
1.121 schwarze 4035:
1.362 schwarze 4036: /* Advance cp to the byte after the end of the name. */
4037:
1.393 schwarze 4038: cp = name;
4039: namesz = 0;
4040: for (;;) {
1.363 schwarze 4041: if (*cp == '\0')
1.212 schwarze 4042: break;
1.363 schwarze 4043: if (*cp == ' ' || *cp == '\t') {
4044: cp++;
4045: break;
4046: }
1.393 schwarze 4047: if (*cp != '\\') {
4048: if (name + namesz < cp) {
4049: name[namesz] = *cp;
4050: *cp = ' ';
4051: }
4052: namesz++;
4053: cp++;
1.121 schwarze 4054: continue;
1.393 schwarze 4055: }
1.362 schwarze 4056: if (cp[1] == '{' || cp[1] == '}')
1.215 schwarze 4057: break;
1.393 schwarze 4058: if (roff_escape(cp, 0, 0, NULL, &inam,
4059: NULL, NULL, &iend) != ESCAPE_UNDEF) {
4060: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
4061: "%.*s%.*s", namesz, name, iend, cp);
4062: cp += iend;
4063: break;
4064: }
4065:
4066: /*
4067: * In an identifier, \\, \., \G and so on
4068: * are reduced to \, ., G and so on,
4069: * vaguely similar to copy mode.
4070: */
4071:
4072: name[namesz++] = cp[inam];
4073: while (iend--) {
4074: if (cp >= name + namesz)
4075: *cp = ' ';
4076: cp++;
4077: }
1.121 schwarze 4078: }
4079:
4080: /* Read past spaces. */
1.362 schwarze 4081:
4082: while (*cp == ' ')
1.121 schwarze 4083: cp++;
4084:
4085: *cpp = cp;
1.277 schwarze 4086: return namesz;
1.121 schwarze 4087: }
4088:
1.106 kristaps 4089: /*
4090: * Store *string into the user-defined string called *name.
4091: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 4092: * append == 0: replace mode
4093: * append == 1: single-line append mode
4094: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 4095: */
1.94 kristaps 4096: static void
1.106 kristaps 4097: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 4098: int append)
1.92 schwarze 4099: {
1.315 schwarze 4100: size_t namesz;
1.164 kristaps 4101:
1.315 schwarze 4102: namesz = strlen(name);
4103: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 4104: string ? strlen(string) : 0, append);
1.315 schwarze 4105: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 4106: }
4107:
4108: static void
1.166 kristaps 4109: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 4110: const char *string, size_t stringsz, int append)
1.164 kristaps 4111: {
1.166 kristaps 4112: struct roffkv *n;
1.164 kristaps 4113: char *c;
4114: int i;
4115: size_t oldch, newch;
1.92 schwarze 4116:
1.106 kristaps 4117: /* Search for an existing string with the same name. */
1.164 kristaps 4118: n = *r;
4119:
1.211 schwarze 4120: while (n && (namesz != n->key.sz ||
4121: strncmp(n->key.p, name, namesz)))
1.92 schwarze 4122: n = n->next;
1.94 kristaps 4123:
4124: if (NULL == n) {
1.106 kristaps 4125: /* Create a new string table entry. */
1.166 kristaps 4126: n = mandoc_malloc(sizeof(struct roffkv));
4127: n->key.p = mandoc_strndup(name, namesz);
4128: n->key.sz = namesz;
4129: n->val.p = NULL;
4130: n->val.sz = 0;
1.164 kristaps 4131: n->next = *r;
4132: *r = n;
1.193 schwarze 4133: } else if (0 == append) {
1.166 kristaps 4134: free(n->val.p);
4135: n->val.p = NULL;
4136: n->val.sz = 0;
1.106 kristaps 4137: }
4138:
4139: if (NULL == string)
4140: return;
4141:
4142: /*
4143: * One additional byte for the '\n' in multiline mode,
4144: * and one for the terminating '\0'.
4145: */
1.193 schwarze 4146: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 4147:
1.166 kristaps 4148: if (NULL == n->val.p) {
4149: n->val.p = mandoc_malloc(newch);
4150: *n->val.p = '\0';
1.106 kristaps 4151: oldch = 0;
4152: } else {
1.166 kristaps 4153: oldch = n->val.sz;
4154: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 4155: }
4156:
4157: /* Skip existing content in the destination buffer. */
1.166 kristaps 4158: c = n->val.p + (int)oldch;
1.106 kristaps 4159:
4160: /* Append new content to the destination buffer. */
1.164 kristaps 4161: i = 0;
4162: while (i < (int)stringsz) {
1.106 kristaps 4163: /*
4164: * Rudimentary roff copy mode:
4165: * Handle escaped backslashes.
4166: */
1.164 kristaps 4167: if ('\\' == string[i] && '\\' == string[i + 1])
4168: i++;
4169: *c++ = string[i++];
1.106 kristaps 4170: }
1.94 kristaps 4171:
1.106 kristaps 4172: /* Append terminating bytes. */
1.193 schwarze 4173: if (1 < append)
1.106 kristaps 4174: *c++ = '\n';
1.163 kristaps 4175:
1.106 kristaps 4176: *c = '\0';
1.166 kristaps 4177: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 4178: }
4179:
1.94 kristaps 4180: static const char *
1.325 schwarze 4181: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 4182: int *deftype)
1.92 schwarze 4183: {
1.315 schwarze 4184: const struct roffkv *n;
1.325 schwarze 4185: int found, i;
1.315 schwarze 4186: enum roff_tok tok;
4187:
1.325 schwarze 4188: found = 0;
4189: for (n = r->strtab; n != NULL; n = n->next) {
4190: if (strncmp(name, n->key.p, len) != 0 ||
4191: n->key.p[len] != '\0' || n->val.p == NULL)
4192: continue;
4193: if (*deftype & ROFFDEF_USER) {
4194: *deftype = ROFFDEF_USER;
4195: return n->val.p;
4196: } else {
4197: found = 1;
4198: break;
4199: }
4200: }
4201: for (n = r->rentab; n != NULL; n = n->next) {
4202: if (strncmp(name, n->key.p, len) != 0 ||
4203: n->key.p[len] != '\0' || n->val.p == NULL)
4204: continue;
4205: if (*deftype & ROFFDEF_REN) {
4206: *deftype = ROFFDEF_REN;
4207: return n->val.p;
4208: } else {
4209: found = 1;
4210: break;
1.315 schwarze 4211: }
4212: }
1.325 schwarze 4213: for (i = 0; i < PREDEFS_MAX; i++) {
4214: if (strncmp(name, predefs[i].name, len) != 0 ||
4215: predefs[i].name[len] != '\0')
4216: continue;
4217: if (*deftype & ROFFDEF_PRE) {
4218: *deftype = ROFFDEF_PRE;
4219: return predefs[i].str;
4220: } else {
4221: found = 1;
4222: break;
1.315 schwarze 4223: }
4224: }
1.356 schwarze 4225: if (r->man->meta.macroset != MACROSET_MAN) {
1.325 schwarze 4226: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4227: if (strncmp(name, roff_name[tok], len) != 0 ||
4228: roff_name[tok][len] != '\0')
4229: continue;
4230: if (*deftype & ROFFDEF_STD) {
4231: *deftype = ROFFDEF_STD;
4232: return NULL;
4233: } else {
4234: found = 1;
4235: break;
1.315 schwarze 4236: }
4237: }
4238: }
1.356 schwarze 4239: if (r->man->meta.macroset != MACROSET_MDOC) {
1.325 schwarze 4240: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4241: if (strncmp(name, roff_name[tok], len) != 0 ||
4242: roff_name[tok][len] != '\0')
4243: continue;
4244: if (*deftype & ROFFDEF_STD) {
4245: *deftype = ROFFDEF_STD;
4246: return NULL;
4247: } else {
4248: found = 1;
4249: break;
1.315 schwarze 4250: }
4251: }
1.325 schwarze 4252: }
4253:
4254: if (found == 0 && *deftype != ROFFDEF_ANY) {
4255: if (*deftype & ROFFDEF_REN) {
4256: /*
4257: * This might still be a request,
4258: * so do not treat it as undefined yet.
4259: */
4260: *deftype = ROFFDEF_UNDEF;
4261: return NULL;
1.315 schwarze 4262: }
1.325 schwarze 4263:
4264: /* Using an undefined string defines it to be empty. */
4265:
4266: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4267: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 4268: }
1.325 schwarze 4269:
1.315 schwarze 4270: *deftype = 0;
1.277 schwarze 4271: return NULL;
1.92 schwarze 4272: }
4273:
1.94 kristaps 4274: static void
1.167 kristaps 4275: roff_freestr(struct roffkv *r)
1.92 schwarze 4276: {
1.166 kristaps 4277: struct roffkv *n, *nn;
1.92 schwarze 4278:
1.167 kristaps 4279: for (n = r; n; n = nn) {
1.166 kristaps 4280: free(n->key.p);
4281: free(n->val.p);
1.92 schwarze 4282: nn = n->next;
4283: free(n);
4284: }
1.114 kristaps 4285: }
1.266 schwarze 4286:
4287: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 4288:
4289: /*
4290: * Duplicate an input string, making the appropriate character
4291: * conversations (as stipulated by `tr') along the way.
4292: * Returns a heap-allocated string with all the replacements made.
4293: */
4294: char *
4295: roff_strdup(const struct roff *r, const char *p)
4296: {
1.166 kristaps 4297: const struct roffkv *cp;
1.164 kristaps 4298: char *res;
4299: const char *pp;
4300: size_t ssz, sz;
4301: enum mandoc_esc esc;
4302:
1.167 kristaps 4303: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 4304: return mandoc_strdup(p);
1.164 kristaps 4305: else if ('\0' == *p)
1.277 schwarze 4306: return mandoc_strdup("");
1.164 kristaps 4307:
4308: /*
4309: * Step through each character looking for term matches
4310: * (remember that a `tr' can be invoked with an escape, which is
4311: * a glyph but the escape is multi-character).
4312: * We only do this if the character hash has been initialised
4313: * and the string is >0 length.
4314: */
4315:
4316: res = NULL;
4317: ssz = 0;
4318:
4319: while ('\0' != *p) {
1.289 schwarze 4320: assert((unsigned int)*p < 128);
4321: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 4322: sz = r->xtab[(int)*p].sz;
4323: res = mandoc_realloc(res, ssz + sz + 1);
4324: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4325: ssz += sz;
4326: p++;
4327: continue;
4328: } else if ('\\' != *p) {
4329: res = mandoc_realloc(res, ssz + 2);
4330: res[ssz++] = *p++;
4331: continue;
4332: }
4333:
1.164 kristaps 4334: /* Search for term matches. */
1.167 kristaps 4335: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4336: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4337: break;
4338:
4339: if (NULL != cp) {
4340: /*
4341: * A match has been found.
4342: * Append the match to the array and move
4343: * forward by its keysize.
4344: */
1.207 schwarze 4345: res = mandoc_realloc(res,
4346: ssz + cp->val.sz + 1);
1.166 kristaps 4347: memcpy(res + ssz, cp->val.p, cp->val.sz);
4348: ssz += cp->val.sz;
4349: p += (int)cp->key.sz;
1.164 kristaps 4350: continue;
4351: }
4352:
1.167 kristaps 4353: /*
4354: * Handle escapes carefully: we need to copy
4355: * over just the escape itself, or else we might
4356: * do replacements within the escape itself.
4357: * Make sure to pass along the bogus string.
4358: */
4359: pp = p++;
4360: esc = mandoc_escape(&p, NULL, NULL);
4361: if (ESCAPE_ERROR == esc) {
4362: sz = strlen(pp);
1.164 kristaps 4363: res = mandoc_realloc(res, ssz + sz + 1);
4364: memcpy(res + ssz, pp, sz);
1.167 kristaps 4365: break;
1.164 kristaps 4366: }
1.207 schwarze 4367: /*
4368: * We bail out on bad escapes.
1.167 kristaps 4369: * No need to warn: we already did so when
1.355 schwarze 4370: * roff_expand() was called.
1.167 kristaps 4371: */
4372: sz = (int)(p - pp);
4373: res = mandoc_realloc(res, ssz + sz + 1);
4374: memcpy(res + ssz, pp, sz);
4375: ssz += sz;
1.164 kristaps 4376: }
4377:
4378: res[(int)ssz] = '\0';
1.277 schwarze 4379: return res;
1.227 schwarze 4380: }
4381:
4382: int
4383: roff_getformat(const struct roff *r)
4384: {
4385:
1.277 schwarze 4386: return r->format;
1.174 kristaps 4387: }
4388:
4389: /*
1.207 schwarze 4390: * Find out whether a line is a macro line or not.
1.174 kristaps 4391: * If it is, adjust the current position and return one; if it isn't,
4392: * return zero and don't change the current position.
4393: * If the control character has been set with `.cc', then let that grain
4394: * precedence.
1.396 schwarze 4395: * This is slightly contrary to groff, where using the non-breaking
1.174 kristaps 4396: * control character when `cc' has been invoked will cause the
4397: * non-breaking macro contents to be printed verbatim.
4398: */
4399: int
4400: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4401: {
4402: int pos;
4403:
4404: pos = *ppos;
4405:
1.303 schwarze 4406: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4407: pos++;
1.303 schwarze 4408: else if (r->control != '\0')
1.277 schwarze 4409: return 0;
1.174 kristaps 4410: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4411: pos += 2;
4412: else if ('.' == cp[pos] || '\'' == cp[pos])
4413: pos++;
4414: else
1.277 schwarze 4415: return 0;
1.174 kristaps 4416:
4417: while (' ' == cp[pos] || '\t' == cp[pos])
4418: pos++;
4419:
4420: *ppos = pos;
1.277 schwarze 4421: return 1;
1.74 kristaps 4422: }
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