Annotation of mandoc/roff.c, Revision 1.333
1.333 ! schwarze 1: /* $Id: roff.c,v 1.332 2018/08/16 23:43:37 schwarze Exp $ */
1.1 kristaps 2: /*
1.267 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.325 schwarze 4: * Copyright (c) 2010-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.66 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.106 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.66 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.106 kristaps 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.66 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 17: */
1.66 kristaps 18: #include "config.h"
1.225 schwarze 19:
20: #include <sys/types.h>
1.30 kristaps 21:
1.67 kristaps 22: #include <assert.h>
1.85 kristaps 23: #include <ctype.h>
1.245 schwarze 24: #include <limits.h>
1.295 schwarze 25: #include <stddef.h>
26: #include <stdint.h>
1.178 schwarze 27: #include <stdio.h>
1.1 kristaps 28: #include <stdlib.h>
1.67 kristaps 29: #include <string.h>
1.1 kristaps 30:
1.67 kristaps 31: #include "mandoc.h"
1.201 schwarze 32: #include "mandoc_aux.h"
1.295 schwarze 33: #include "mandoc_ohash.h"
1.265 schwarze 34: #include "roff.h"
1.226 schwarze 35: #include "libmandoc.h"
1.266 schwarze 36: #include "roff_int.h"
1.109 kristaps 37: #include "libroff.h"
1.82 kristaps 38:
1.170 schwarze 39: /* Maximum number of string expansions per line, to break infinite loops. */
40: #define EXPAND_LIMIT 1000
41:
1.315 schwarze 42: /* Types of definitions of macros and strings. */
43: #define ROFFDEF_USER (1 << 1) /* User-defined. */
44: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
45: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
46: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
47: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
48: ROFFDEF_REN | ROFFDEF_STD)
1.325 schwarze 49: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 50:
1.266 schwarze 51: /* --- data types --------------------------------------------------------- */
52:
1.147 kristaps 53: /*
1.167 kristaps 54: * An incredibly-simple string buffer.
55: */
1.94 kristaps 56: struct roffstr {
1.167 kristaps 57: char *p; /* nil-terminated buffer */
58: size_t sz; /* saved strlen(p) */
1.166 kristaps 59: };
60:
61: /*
1.167 kristaps 62: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 63: */
64: struct roffkv {
65: struct roffstr key;
66: struct roffstr val;
67: struct roffkv *next; /* next in list */
1.94 kristaps 68: };
69:
1.180 schwarze 70: /*
71: * A single number register as part of a singly-linked list.
72: */
73: struct roffreg {
74: struct roffstr key;
1.181 schwarze 75: int val;
1.327 schwarze 76: int step;
1.180 schwarze 77: struct roffreg *next;
78: };
79:
1.295 schwarze 80: /*
81: * Association of request and macro names with token IDs.
82: */
83: struct roffreq {
84: enum roff_tok tok;
85: char name[];
86: };
87:
1.67 kristaps 88: struct roff {
1.128 kristaps 89: struct mparse *parse; /* parse point */
1.296 schwarze 90: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 91: struct roffnode *last; /* leaf of stack */
1.223 schwarze 92: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 93: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 94: struct roffreg *regtab; /* number registers */
1.166 kristaps 95: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 96: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 97: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
98: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 99: const char *current_string; /* value of last called user macro */
1.118 kristaps 100: struct tbl_node *first_tbl; /* first table parsed */
101: struct tbl_node *last_tbl; /* last table parsed */
102: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 103: struct eqn_node *last_eqn; /* equation parser */
104: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 105: int eqn_inline; /* current equation is inline */
1.223 schwarze 106: int options; /* parse options */
107: int rstacksz; /* current size limit of rstack */
108: int rstackpos; /* position in rstack */
1.227 schwarze 109: int format; /* current file in mdoc or man format */
1.273 schwarze 110: int argc; /* number of args of the last macro */
1.223 schwarze 111: char control; /* control character */
1.303 schwarze 112: char escape; /* escape character */
1.79 kristaps 113: };
114:
1.67 kristaps 115: struct roffnode {
1.294 schwarze 116: enum roff_tok tok; /* type of node */
1.67 kristaps 117: struct roffnode *parent; /* up one in stack */
118: int line; /* parse line */
119: int col; /* parse col */
1.106 kristaps 120: char *name; /* node name, e.g. macro name */
1.79 kristaps 121: char *end; /* end-rules: custom token */
122: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 123: int rule; /* current evaluation rule */
1.67 kristaps 124: };
125:
126: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 127: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 128: struct buf *buf, /* input buffer */ \
1.67 kristaps 129: int ln, /* parse line */ \
1.75 kristaps 130: int ppos, /* original pos in buffer */ \
131: int pos, /* current pos in buffer */ \
1.74 kristaps 132: int *offs /* reset offset of buffer data */
1.67 kristaps 133:
134: typedef enum rofferr (*roffproc)(ROFF_ARGS);
135:
136: struct roffmac {
1.79 kristaps 137: roffproc proc; /* process new macro */
138: roffproc text; /* process as child text of macro */
139: roffproc sub; /* process as child of macro */
140: int flags;
141: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 142: };
143:
1.141 kristaps 144: struct predef {
145: const char *name; /* predefined input name */
146: const char *str; /* replacement symbol */
147: };
148:
149: #define PREDEF(__name, __str) \
150: { (__name), (__str) },
151:
1.266 schwarze 152: /* --- function prototypes ------------------------------------------------ */
153:
1.155 kristaps 154: static void roffnode_cleanscope(struct roff *);
155: static void roffnode_pop(struct roff *);
1.294 schwarze 156: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 157: const char *, int, int);
1.321 schwarze 158: static void roff_addtbl(struct roff_man *, struct tbl_node *);
1.311 schwarze 159: static enum rofferr roff_als(ROFF_ARGS);
1.80 kristaps 160: static enum rofferr roff_block(ROFF_ARGS);
161: static enum rofferr roff_block_text(ROFF_ARGS);
162: static enum rofferr roff_block_sub(ROFF_ARGS);
1.296 schwarze 163: static enum rofferr roff_br(ROFF_ARGS);
1.80 kristaps 164: static enum rofferr roff_cblock(ROFF_ARGS);
1.174 kristaps 165: static enum rofferr roff_cc(ROFF_ARGS);
1.195 schwarze 166: static void roff_ccond(struct roff *, int, int);
1.82 kristaps 167: static enum rofferr roff_cond(ROFF_ARGS);
168: static enum rofferr roff_cond_text(ROFF_ARGS);
169: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.92 schwarze 170: static enum rofferr roff_ds(ROFF_ARGS);
1.303 schwarze 171: static enum rofferr roff_ec(ROFF_ARGS);
172: static enum rofferr roff_eo(ROFF_ARGS);
1.238 schwarze 173: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 174: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 175: static int roff_evalnum(struct roff *, int,
176: const char *, int *, int *, int);
177: static int roff_evalpar(struct roff *, int,
1.261 schwarze 178: const char *, int *, int *, int);
1.198 schwarze 179: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 180: static void roff_free1(struct roff *);
1.180 schwarze 181: static void roff_freereg(struct roffreg *);
1.167 kristaps 182: static void roff_freestr(struct roffkv *);
1.212 schwarze 183: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 184: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 185: static int roff_getop(const char *, int *, char *);
1.327 schwarze 186: static int roff_getregn(struct roff *,
187: const char *, size_t, char);
1.273 schwarze 188: static int roff_getregro(const struct roff *,
189: const char *name);
1.325 schwarze 190: static const char *roff_getstrn(struct roff *,
1.315 schwarze 191: const char *, size_t, int *);
1.271 schwarze 192: static int roff_hasregn(const struct roff *,
193: const char *, size_t);
1.251 schwarze 194: static enum rofferr roff_insec(ROFF_ARGS);
1.178 schwarze 195: static enum rofferr roff_it(ROFF_ARGS);
1.103 kristaps 196: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.265 schwarze 197: static void roff_man_alloc1(struct roff_man *);
198: static void roff_man_free1(struct roff_man *);
1.300 schwarze 199: static enum rofferr roff_manyarg(ROFF_ARGS);
1.330 schwarze 200: static enum rofferr roff_nop(ROFF_ARGS);
1.89 kristaps 201: static enum rofferr roff_nr(ROFF_ARGS);
1.297 schwarze 202: static enum rofferr roff_onearg(ROFF_ARGS);
1.294 schwarze 203: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 204: int, int);
1.305 schwarze 205: static enum rofferr roff_parsetext(struct roff *, struct buf *,
206: int, int *);
1.306 schwarze 207: static enum rofferr roff_renamed(ROFF_ARGS);
1.238 schwarze 208: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.122 schwarze 209: static enum rofferr roff_rm(ROFF_ARGS);
1.306 schwarze 210: static enum rofferr roff_rn(ROFF_ARGS);
1.203 schwarze 211: static enum rofferr roff_rr(ROFF_ARGS);
1.326 schwarze 212: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 213: size_t, int, char, int);
1.94 kristaps 214: static void roff_setstr(struct roff *,
1.106 kristaps 215: const char *, const char *, int);
1.207 schwarze 216: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 217: size_t, const char *, size_t, int);
1.105 kristaps 218: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 219: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 220: static enum rofferr roff_Dd(ROFF_ARGS);
1.109 kristaps 221: static enum rofferr roff_TE(ROFF_ARGS);
222: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 223: static enum rofferr roff_EQ(ROFF_ARGS);
224: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 225: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 226: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 227: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 228:
1.266 schwarze 229: /* --- constant data ------------------------------------------------------ */
230:
1.261 schwarze 231: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
232: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
233:
1.294 schwarze 234: const char *__roff_name[MAN_MAX + 1] = {
1.305 schwarze 235: "br", "ce", "ft", "ll",
1.312 schwarze 236: "mc", "po", "rj", "sp",
237: "ta", "ti", NULL,
1.294 schwarze 238: "ab", "ad", "af", "aln",
239: "als", "am", "am1", "ami",
240: "ami1", "as", "as1", "asciify",
241: "backtrace", "bd", "bleedat", "blm",
242: "box", "boxa", "bp", "BP",
243: "break", "breakchar", "brnl", "brp",
1.305 schwarze 244: "brpnl", "c2", "cc",
1.294 schwarze 245: "cf", "cflags", "ch", "char",
246: "chop", "class", "close", "CL",
247: "color", "composite", "continue", "cp",
248: "cropat", "cs", "cu", "da",
249: "dch", "Dd", "de", "de1",
250: "defcolor", "dei", "dei1", "device",
251: "devicem", "di", "do", "ds",
252: "ds1", "dwh", "dt", "ec",
253: "ecr", "ecs", "el", "em",
254: "EN", "eo", "EP", "EQ",
255: "errprint", "ev", "evc", "ex",
256: "fallback", "fam", "fc", "fchar",
257: "fcolor", "fdeferlig", "feature", "fkern",
258: "fl", "flig", "fp", "fps",
259: "fschar", "fspacewidth", "fspecial", "ftr",
260: "fzoom", "gcolor", "hc", "hcode",
261: "hidechar", "hla", "hlm", "hpf",
262: "hpfa", "hpfcode", "hw", "hy",
263: "hylang", "hylen", "hym", "hypp",
264: "hys", "ie", "if", "ig",
265: "index", "it", "itc", "IX",
266: "kern", "kernafter", "kernbefore", "kernpair",
267: "lc", "lc_ctype", "lds", "length",
268: "letadj", "lf", "lg", "lhang",
269: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 270: "ls", "lsm", "lt",
1.294 schwarze 271: "mediasize", "minss", "mk", "mso",
272: "na", "ne", "nh", "nhychar",
273: "nm", "nn", "nop", "nr",
274: "nrf", "nroff", "ns", "nx",
275: "open", "opena", "os", "output",
276: "padj", "papersize", "pc", "pev",
277: "pi", "PI", "pl", "pm",
1.312 schwarze 278: "pn", "pnr", "ps",
1.294 schwarze 279: "psbb", "pshape", "pso", "ptr",
280: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 281: "return", "rfschar", "rhang",
1.294 schwarze 282: "rm", "rn", "rnn", "rr",
283: "rs", "rt", "schar", "sentchar",
284: "shc", "shift", "sizes", "so",
285: "spacewidth", "special", "spreadwarn", "ss",
286: "sty", "substring", "sv", "sy",
1.300 schwarze 287: "T&", "tc", "TE",
1.301 schwarze 288: "TH", "tkf", "tl",
1.294 schwarze 289: "tm", "tm1", "tmc", "tr",
290: "track", "transchar", "trf", "trimat",
291: "trin", "trnt", "troff", "TS",
292: "uf", "ul", "unformat", "unwatch",
293: "unwatchn", "vpt", "vs", "warn",
294: "warnscale", "watch", "watchlength", "watchn",
295: "wh", "while", "write", "writec",
296: "writem", "xflag", ".", NULL,
1.306 schwarze 297: NULL, "text",
1.294 schwarze 298: "Dd", "Dt", "Os", "Sh",
299: "Ss", "Pp", "D1", "Dl",
300: "Bd", "Ed", "Bl", "El",
301: "It", "Ad", "An", "Ap",
302: "Ar", "Cd", "Cm", "Dv",
303: "Er", "Ev", "Ex", "Fa",
304: "Fd", "Fl", "Fn", "Ft",
305: "Ic", "In", "Li", "Nd",
306: "Nm", "Op", "Ot", "Pa",
307: "Rv", "St", "Va", "Vt",
308: "Xr", "%A", "%B", "%D",
309: "%I", "%J", "%N", "%O",
310: "%P", "%R", "%T", "%V",
311: "Ac", "Ao", "Aq", "At",
312: "Bc", "Bf", "Bo", "Bq",
313: "Bsx", "Bx", "Db", "Dc",
314: "Do", "Dq", "Ec", "Ef",
315: "Em", "Eo", "Fx", "Ms",
316: "No", "Ns", "Nx", "Ox",
317: "Pc", "Pf", "Po", "Pq",
318: "Qc", "Ql", "Qo", "Qq",
319: "Re", "Rs", "Sc", "So",
320: "Sq", "Sm", "Sx", "Sy",
321: "Tn", "Ux", "Xc", "Xo",
322: "Fo", "Fc", "Oo", "Oc",
323: "Bk", "Ek", "Bt", "Hf",
324: "Fr", "Ud", "Lb", "Lp",
325: "Lk", "Mt", "Brq", "Bro",
326: "Brc", "%C", "Es", "En",
1.299 schwarze 327: "Dx", "%Q", "%U", "Ta",
328: NULL,
1.294 schwarze 329: "TH", "SH", "SS", "TP",
1.332 schwarze 330: "TQ",
1.294 schwarze 331: "LP", "PP", "P", "IP",
332: "HP", "SM", "SB", "BI",
333: "IB", "BR", "RB", "R",
334: "B", "I", "IR", "RI",
1.299 schwarze 335: "nf", "fi",
1.294 schwarze 336: "RE", "RS", "DT", "UC",
1.297 schwarze 337: "PD", "AT", "in",
1.333 ! schwarze 338: "SY", "YS", "OP",
! 339: "EX", "EE", "UR",
1.317 schwarze 340: "UE", "MT", "ME", NULL
1.294 schwarze 341: };
342: const char *const *roff_name = __roff_name;
343:
344: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 345: { roff_br, NULL, NULL, 0 }, /* br */
1.305 schwarze 346: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.297 schwarze 347: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 348: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 349: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.312 schwarze 350: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 351: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 352: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 353: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 354: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 355: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 356: { roff_unsupp, NULL, NULL, 0 }, /* ab */
357: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
358: { roff_line_ignore, NULL, NULL, 0 }, /* af */
359: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 360: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 361: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
362: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
363: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
364: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
365: { roff_ds, NULL, NULL, 0 }, /* as */
366: { roff_ds, NULL, NULL, 0 }, /* as1 */
367: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
368: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
369: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
370: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
371: { roff_unsupp, NULL, NULL, 0 }, /* blm */
372: { roff_unsupp, NULL, NULL, 0 }, /* box */
373: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
374: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
375: { roff_unsupp, NULL, NULL, 0 }, /* BP */
376: { roff_unsupp, NULL, NULL, 0 }, /* break */
377: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
378: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 379: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 380: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
381: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
382: { roff_cc, NULL, NULL, 0 }, /* cc */
383: { roff_insec, NULL, NULL, 0 }, /* cf */
384: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
385: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
386: { roff_unsupp, NULL, NULL, 0 }, /* char */
387: { roff_unsupp, NULL, NULL, 0 }, /* chop */
388: { roff_line_ignore, NULL, NULL, 0 }, /* class */
389: { roff_insec, NULL, NULL, 0 }, /* close */
390: { roff_unsupp, NULL, NULL, 0 }, /* CL */
391: { roff_line_ignore, NULL, NULL, 0 }, /* color */
392: { roff_unsupp, NULL, NULL, 0 }, /* composite */
393: { roff_unsupp, NULL, NULL, 0 }, /* continue */
394: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
395: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
396: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
397: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
398: { roff_unsupp, NULL, NULL, 0 }, /* da */
399: { roff_unsupp, NULL, NULL, 0 }, /* dch */
400: { roff_Dd, NULL, NULL, 0 }, /* Dd */
401: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
402: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
403: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
404: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
405: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
406: { roff_unsupp, NULL, NULL, 0 }, /* device */
407: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
408: { roff_unsupp, NULL, NULL, 0 }, /* di */
409: { roff_unsupp, NULL, NULL, 0 }, /* do */
410: { roff_ds, NULL, NULL, 0 }, /* ds */
411: { roff_ds, NULL, NULL, 0 }, /* ds1 */
412: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
413: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 414: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 415: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
416: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
417: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
418: { roff_unsupp, NULL, NULL, 0 }, /* em */
419: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 420: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 421: { roff_unsupp, NULL, NULL, 0 }, /* EP */
422: { roff_EQ, NULL, NULL, 0 }, /* EQ */
423: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
424: { roff_unsupp, NULL, NULL, 0 }, /* ev */
425: { roff_unsupp, NULL, NULL, 0 }, /* evc */
426: { roff_unsupp, NULL, NULL, 0 }, /* ex */
427: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
428: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
429: { roff_unsupp, NULL, NULL, 0 }, /* fc */
430: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
431: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
432: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
433: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
434: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
435: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
436: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
437: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
438: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
439: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
440: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
441: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
442: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
443: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
444: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
445: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
446: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
447: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
448: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
449: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
450: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
451: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
452: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
453: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
454: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
455: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
456: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
457: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
458: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
459: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
460: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
461: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
462: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
463: { roff_unsupp, NULL, NULL, 0 }, /* index */
464: { roff_it, NULL, NULL, 0 }, /* it */
465: { roff_unsupp, NULL, NULL, 0 }, /* itc */
466: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
467: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
468: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
469: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
470: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
471: { roff_unsupp, NULL, NULL, 0 }, /* lc */
472: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
473: { roff_unsupp, NULL, NULL, 0 }, /* lds */
474: { roff_unsupp, NULL, NULL, 0 }, /* length */
475: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
476: { roff_insec, NULL, NULL, 0 }, /* lf */
477: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
478: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
479: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
480: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
481: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
482: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
483: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
484: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
485: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
486: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
487: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
488: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
489: { roff_insec, NULL, NULL, 0 }, /* mso */
490: { roff_line_ignore, NULL, NULL, 0 }, /* na */
491: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
492: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
493: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
494: { roff_unsupp, NULL, NULL, 0 }, /* nm */
495: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 496: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 497: { roff_nr, NULL, NULL, 0 }, /* nr */
498: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
499: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
500: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
501: { roff_insec, NULL, NULL, 0 }, /* nx */
502: { roff_insec, NULL, NULL, 0 }, /* open */
503: { roff_insec, NULL, NULL, 0 }, /* opena */
504: { roff_line_ignore, NULL, NULL, 0 }, /* os */
505: { roff_unsupp, NULL, NULL, 0 }, /* output */
506: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
507: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
508: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
509: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
510: { roff_insec, NULL, NULL, 0 }, /* pi */
511: { roff_unsupp, NULL, NULL, 0 }, /* PI */
512: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
513: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
514: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
515: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
516: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
517: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
518: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
519: { roff_insec, NULL, NULL, 0 }, /* pso */
520: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
521: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
522: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
523: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
524: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
525: { roff_unsupp, NULL, NULL, 0 }, /* return */
526: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
527: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
528: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 529: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 530: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
531: { roff_rr, NULL, NULL, 0 }, /* rr */
532: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
533: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
534: { roff_unsupp, NULL, NULL, 0 }, /* schar */
535: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
536: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
537: { roff_unsupp, NULL, NULL, 0 }, /* shift */
538: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
539: { roff_so, NULL, NULL, 0 }, /* so */
540: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
541: { roff_line_ignore, NULL, NULL, 0 }, /* special */
542: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
543: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
544: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
545: { roff_unsupp, NULL, NULL, 0 }, /* substring */
546: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
547: { roff_insec, NULL, NULL, 0 }, /* sy */
548: { roff_T_, NULL, NULL, 0 }, /* T& */
549: { roff_unsupp, NULL, NULL, 0 }, /* tc */
550: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 551: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 552: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
553: { roff_unsupp, NULL, NULL, 0 }, /* tl */
554: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
555: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
556: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
557: { roff_tr, NULL, NULL, 0 }, /* tr */
558: { roff_line_ignore, NULL, NULL, 0 }, /* track */
559: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
560: { roff_insec, NULL, NULL, 0 }, /* trf */
561: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
562: { roff_unsupp, NULL, NULL, 0 }, /* trin */
563: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
564: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
565: { roff_TS, NULL, NULL, 0 }, /* TS */
566: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
567: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
568: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
569: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
570: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
571: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
572: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
573: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
574: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
575: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
576: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
577: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
578: { roff_unsupp, NULL, NULL, 0 }, /* wh */
579: { roff_unsupp, NULL, NULL, 0 }, /* while */
580: { roff_insec, NULL, NULL, 0 }, /* write */
581: { roff_insec, NULL, NULL, 0 }, /* writec */
582: { roff_insec, NULL, NULL, 0 }, /* writem */
583: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
584: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 585: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 586: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 587: };
588:
1.141 kristaps 589: /* Array of injected predefined strings. */
590: #define PREDEFS_MAX 38
591: static const struct predef predefs[PREDEFS_MAX] = {
592: #include "predefs.in"
593: };
594:
1.305 schwarze 595: static int roffce_lines; /* number of input lines to center */
596: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 597: static int roffit_lines; /* number of lines to delay */
598: static char *roffit_macro; /* nil-terminated macro line */
599:
1.207 schwarze 600:
1.266 schwarze 601: /* --- request table ------------------------------------------------------ */
602:
1.295 schwarze 603: struct ohash *
604: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 605: {
1.295 schwarze 606: struct ohash *htab;
607: struct roffreq *req;
608: enum roff_tok tok;
609: size_t sz;
610: unsigned int slot;
1.85 kristaps 611:
1.295 schwarze 612: htab = mandoc_malloc(sizeof(*htab));
613: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 614:
1.295 schwarze 615: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 616: if (roff_name[tok] == NULL)
617: continue;
1.295 schwarze 618: sz = strlen(roff_name[tok]);
619: req = mandoc_malloc(sizeof(*req) + sz + 1);
620: req->tok = tok;
621: memcpy(req->name, roff_name[tok], sz + 1);
622: slot = ohash_qlookup(htab, req->name);
623: ohash_insert(htab, slot, req);
1.85 kristaps 624: }
1.295 schwarze 625: return htab;
1.85 kristaps 626: }
627:
1.295 schwarze 628: void
629: roffhash_free(struct ohash *htab)
1.67 kristaps 630: {
1.295 schwarze 631: struct roffreq *req;
632: unsigned int slot;
1.67 kristaps 633:
1.295 schwarze 634: if (htab == NULL)
635: return;
636: for (req = ohash_first(htab, &slot); req != NULL;
637: req = ohash_next(htab, &slot))
638: free(req);
639: ohash_delete(htab);
640: free(htab);
641: }
642:
643: enum roff_tok
644: roffhash_find(struct ohash *htab, const char *name, size_t sz)
645: {
646: struct roffreq *req;
647: const char *end;
648:
649: if (sz) {
650: end = name + sz;
651: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
652: } else
653: req = ohash_find(htab, ohash_qlookup(htab, name));
654: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 655: }
656:
1.266 schwarze 657: /* --- stack of request blocks -------------------------------------------- */
658:
1.67 kristaps 659: /*
660: * Pop the current node off of the stack of roff instructions currently
661: * pending.
662: */
663: static void
664: roffnode_pop(struct roff *r)
665: {
666: struct roffnode *p;
667:
1.75 kristaps 668: assert(r->last);
1.207 schwarze 669: p = r->last;
1.82 kristaps 670:
1.75 kristaps 671: r->last = r->last->parent;
1.106 kristaps 672: free(p->name);
673: free(p->end);
1.67 kristaps 674: free(p);
675: }
676:
677: /*
678: * Push a roff node onto the instruction stack. This must later be
679: * removed with roffnode_pop().
680: */
1.98 schwarze 681: static void
1.294 schwarze 682: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 683: int line, int col)
1.67 kristaps 684: {
685: struct roffnode *p;
686:
1.98 schwarze 687: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 688: p->tok = tok;
1.106 kristaps 689: if (name)
690: p->name = mandoc_strdup(name);
1.67 kristaps 691: p->parent = r->last;
692: p->line = line;
693: p->col = col;
1.198 schwarze 694: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 695:
696: r->last = p;
697: }
698:
1.266 schwarze 699: /* --- roff parser state data management ---------------------------------- */
700:
1.67 kristaps 701: static void
702: roff_free1(struct roff *r)
703: {
1.176 schwarze 704: struct tbl_node *tbl;
1.167 kristaps 705: int i;
1.67 kristaps 706:
1.176 schwarze 707: while (NULL != (tbl = r->first_tbl)) {
708: r->first_tbl = tbl->next;
709: tbl_free(tbl);
1.109 kristaps 710: }
1.113 kristaps 711: r->first_tbl = r->last_tbl = r->tbl = NULL;
712:
1.319 schwarze 713: if (r->last_eqn != NULL)
714: eqn_free(r->last_eqn);
715: r->last_eqn = r->eqn = NULL;
1.125 kristaps 716:
1.67 kristaps 717: while (r->last)
718: roffnode_pop(r);
1.109 kristaps 719:
1.223 schwarze 720: free (r->rstack);
721: r->rstack = NULL;
722: r->rstacksz = 0;
723: r->rstackpos = -1;
724:
725: roff_freereg(r->regtab);
726: r->regtab = NULL;
727:
1.167 kristaps 728: roff_freestr(r->strtab);
1.306 schwarze 729: roff_freestr(r->rentab);
1.167 kristaps 730: roff_freestr(r->xmbtab);
1.306 schwarze 731: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 732:
733: if (r->xtab)
734: for (i = 0; i < 128; i++)
735: free(r->xtab[i].p);
736: free(r->xtab);
737: r->xtab = NULL;
1.67 kristaps 738: }
739:
740: void
741: roff_reset(struct roff *r)
742: {
743: roff_free1(r);
1.227 schwarze 744: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 745: r->control = '\0';
746: r->escape = '\\';
1.307 schwarze 747: roffce_lines = 0;
748: roffce_node = NULL;
749: roffit_lines = 0;
750: roffit_macro = NULL;
1.67 kristaps 751: }
752:
753: void
754: roff_free(struct roff *r)
755: {
756: roff_free1(r);
1.295 schwarze 757: roffhash_free(r->reqtab);
1.67 kristaps 758: free(r);
759: }
760:
761: struct roff *
1.279 schwarze 762: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 763: {
764: struct roff *r;
765:
1.98 schwarze 766: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 767: r->parse = parse;
1.328 schwarze 768: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.199 schwarze 769: r->options = options;
1.227 schwarze 770: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 771: r->rstackpos = -1;
1.303 schwarze 772: r->escape = '\\';
1.277 schwarze 773: return r;
1.265 schwarze 774: }
775:
1.266 schwarze 776: /* --- syntax tree state data management ---------------------------------- */
777:
1.265 schwarze 778: static void
779: roff_man_free1(struct roff_man *man)
780: {
781:
1.266 schwarze 782: if (man->first != NULL)
783: roff_node_delete(man, man->first);
1.265 schwarze 784: free(man->meta.msec);
785: free(man->meta.vol);
786: free(man->meta.os);
787: free(man->meta.arch);
788: free(man->meta.title);
789: free(man->meta.name);
790: free(man->meta.date);
791: }
792:
793: static void
794: roff_man_alloc1(struct roff_man *man)
795: {
796:
797: memset(&man->meta, 0, sizeof(man->meta));
798: man->first = mandoc_calloc(1, sizeof(*man->first));
799: man->first->type = ROFFT_ROOT;
800: man->last = man->first;
801: man->last_es = NULL;
802: man->flags = 0;
803: man->macroset = MACROSET_NONE;
804: man->lastsec = man->lastnamed = SEC_NONE;
805: man->next = ROFF_NEXT_CHILD;
806: }
807:
808: void
809: roff_man_reset(struct roff_man *man)
810: {
811:
812: roff_man_free1(man);
813: roff_man_alloc1(man);
814: }
815:
816: void
817: roff_man_free(struct roff_man *man)
818: {
819:
820: roff_man_free1(man);
821: free(man);
822: }
823:
824: struct roff_man *
825: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.316 schwarze 826: const char *os_s, int quick)
1.265 schwarze 827: {
828: struct roff_man *man;
829:
830: man = mandoc_calloc(1, sizeof(*man));
831: man->parse = parse;
832: man->roff = roff;
1.316 schwarze 833: man->os_s = os_s;
1.265 schwarze 834: man->quick = quick;
835: roff_man_alloc1(man);
1.296 schwarze 836: roff->man = man;
1.277 schwarze 837: return man;
1.67 kristaps 838: }
839:
1.266 schwarze 840: /* --- syntax tree handling ----------------------------------------------- */
841:
842: struct roff_node *
843: roff_node_alloc(struct roff_man *man, int line, int pos,
844: enum roff_type type, int tok)
845: {
846: struct roff_node *n;
847:
848: n = mandoc_calloc(1, sizeof(*n));
849: n->line = line;
850: n->pos = pos;
851: n->tok = tok;
852: n->type = type;
853: n->sec = man->lastsec;
854:
855: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 856: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 857: else
1.285 schwarze 858: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 859: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 860: n->flags |= NODE_LINE;
1.266 schwarze 861: man->flags &= ~MDOC_NEWLINE;
862:
1.277 schwarze 863: return n;
1.266 schwarze 864: }
865:
866: void
867: roff_node_append(struct roff_man *man, struct roff_node *n)
868: {
869:
870: switch (man->next) {
871: case ROFF_NEXT_SIBLING:
1.281 schwarze 872: if (man->last->next != NULL) {
873: n->next = man->last->next;
874: man->last->next->prev = n;
875: } else
876: man->last->parent->last = n;
1.266 schwarze 877: man->last->next = n;
878: n->prev = man->last;
879: n->parent = man->last->parent;
880: break;
881: case ROFF_NEXT_CHILD:
1.287 schwarze 882: if (man->last->child != NULL) {
883: n->next = man->last->child;
884: man->last->child->prev = n;
885: } else
886: man->last->last = n;
1.266 schwarze 887: man->last->child = n;
888: n->parent = man->last;
889: break;
890: default:
891: abort();
892: }
1.282 schwarze 893: man->last = n;
1.266 schwarze 894:
895: switch (n->type) {
896: case ROFFT_HEAD:
897: n->parent->head = n;
898: break;
899: case ROFFT_BODY:
1.282 schwarze 900: if (n->end != ENDBODY_NOT)
901: return;
1.266 schwarze 902: n->parent->body = n;
903: break;
904: case ROFFT_TAIL:
905: n->parent->tail = n;
906: break;
907: default:
1.282 schwarze 908: return;
1.266 schwarze 909: }
1.282 schwarze 910:
911: /*
912: * Copy over the normalised-data pointer of our parent. Not
913: * everybody has one, but copying a null pointer is fine.
914: */
915:
916: n->norm = n->parent->norm;
917: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 918: }
919:
1.267 schwarze 920: void
921: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
922: {
923: struct roff_node *n;
924:
925: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
926: n->string = roff_strdup(man->roff, word);
927: roff_node_append(man, n);
1.286 schwarze 928: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 929: man->next = ROFF_NEXT_SIBLING;
930: }
931:
932: void
933: roff_word_append(struct roff_man *man, const char *word)
934: {
935: struct roff_node *n;
936: char *addstr, *newstr;
937:
938: n = man->last;
939: addstr = roff_strdup(man->roff, word);
940: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
941: free(addstr);
942: free(n->string);
943: n->string = newstr;
944: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 945: }
946:
947: void
948: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
949: {
950: struct roff_node *n;
951:
952: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
953: roff_node_append(man, n);
954: man->next = ROFF_NEXT_CHILD;
955: }
956:
957: struct roff_node *
958: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
959: {
960: struct roff_node *n;
961:
962: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
963: roff_node_append(man, n);
964: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 965: return n;
1.267 schwarze 966: }
967:
1.266 schwarze 968: struct roff_node *
969: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
970: {
971: struct roff_node *n;
972:
973: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
974: roff_node_append(man, n);
975: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 976: return n;
1.266 schwarze 977: }
978:
979: struct roff_node *
980: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
981: {
982: struct roff_node *n;
983:
984: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
985: roff_node_append(man, n);
986: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 987: return n;
1.267 schwarze 988: }
989:
1.321 schwarze 990: static void
991: roff_addtbl(struct roff_man *man, struct tbl_node *tbl)
1.267 schwarze 992: {
993: struct roff_node *n;
1.321 schwarze 994: const struct tbl_span *span;
1.267 schwarze 995:
996: if (man->macroset == MACROSET_MAN)
1.302 schwarze 997: man_breakscope(man, ROFF_TS);
1.321 schwarze 998: while ((span = tbl_span(tbl)) != NULL) {
999: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1000: n->span = span;
1001: roff_node_append(man, n);
1002: n->flags |= NODE_VALID | NODE_ENDED;
1003: man->next = ROFF_NEXT_SIBLING;
1004: }
1.266 schwarze 1005: }
1006:
1007: void
1008: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1009: {
1010:
1011: /* Adjust siblings. */
1012:
1013: if (n->prev)
1014: n->prev->next = n->next;
1015: if (n->next)
1016: n->next->prev = n->prev;
1017:
1018: /* Adjust parent. */
1019:
1020: if (n->parent != NULL) {
1021: if (n->parent->child == n)
1022: n->parent->child = n->next;
1023: if (n->parent->last == n)
1024: n->parent->last = n->prev;
1025: }
1026:
1027: /* Adjust parse point. */
1028:
1029: if (man == NULL)
1030: return;
1031: if (man->last == n) {
1032: if (n->prev == NULL) {
1033: man->last = n->parent;
1034: man->next = ROFF_NEXT_CHILD;
1035: } else {
1036: man->last = n->prev;
1037: man->next = ROFF_NEXT_SIBLING;
1038: }
1039: }
1040: if (man->first == n)
1041: man->first = NULL;
1042: }
1043:
1044: void
1045: roff_node_free(struct roff_node *n)
1046: {
1047:
1048: if (n->args != NULL)
1049: mdoc_argv_free(n->args);
1050: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1051: free(n->norm);
1.319 schwarze 1052: if (n->eqn != NULL)
1053: eqn_box_free(n->eqn);
1.266 schwarze 1054: free(n->string);
1055: free(n);
1056: }
1057:
1058: void
1059: roff_node_delete(struct roff_man *man, struct roff_node *n)
1060: {
1061:
1062: while (n->child != NULL)
1063: roff_node_delete(man, n->child);
1064: roff_node_unlink(man, n);
1065: roff_node_free(n);
1.269 schwarze 1066: }
1067:
1068: void
1069: deroff(char **dest, const struct roff_node *n)
1070: {
1071: char *cp;
1072: size_t sz;
1073:
1074: if (n->type != ROFFT_TEXT) {
1075: for (n = n->child; n != NULL; n = n->next)
1076: deroff(dest, n);
1077: return;
1078: }
1079:
1.288 schwarze 1080: /* Skip leading whitespace. */
1.269 schwarze 1081:
1.288 schwarze 1082: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1083: if (cp[0] == '\\' && cp[1] != '\0' &&
1084: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1085: cp++;
1.288 schwarze 1086: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1087: break;
1088: }
1089:
1.289 schwarze 1090: /* Skip trailing backslash. */
1091:
1092: sz = strlen(cp);
1.290 schwarze 1093: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1094: sz--;
1095:
1.269 schwarze 1096: /* Skip trailing whitespace. */
1097:
1.289 schwarze 1098: for (; sz; sz--)
1.269 schwarze 1099: if ( ! isspace((unsigned char)cp[sz-1]))
1100: break;
1101:
1102: /* Skip empty strings. */
1103:
1104: if (sz == 0)
1105: return;
1106:
1107: if (*dest == NULL) {
1108: *dest = mandoc_strndup(cp, sz);
1109: return;
1110: }
1111:
1112: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1113: free(*dest);
1114: *dest = cp;
1.266 schwarze 1115: }
1116:
1117: /* --- main functions of the roff parser ---------------------------------- */
1118:
1.94 kristaps 1119: /*
1.206 schwarze 1120: * In the current line, expand escape sequences that tend to get
1121: * used in numerical expressions and conditional requests.
1122: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1123: */
1.172 schwarze 1124: static enum rofferr
1.238 schwarze 1125: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1126: {
1.208 schwarze 1127: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1128: struct roff_node *n; /* used for header comments */
1.205 schwarze 1129: const char *start; /* start of the string to process */
1.209 schwarze 1130: char *stesc; /* start of an escape sequence ('\\') */
1.328 schwarze 1131: char *ep; /* end of comment string */
1.108 schwarze 1132: const char *stnam; /* start of the name, after "[(*" */
1133: const char *cp; /* end of the name, e.g. before ']' */
1134: const char *res; /* the string to be substituted */
1.238 schwarze 1135: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1136: size_t maxl; /* expected length of the escape name */
1137: size_t naml; /* actual length of the escape name */
1.237 schwarze 1138: enum mandoc_esc esc; /* type of the escape sequence */
1139: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1140: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1141: int npos; /* position in numeric expression */
1.218 schwarze 1142: int arg_complete; /* argument not interrupted by eol */
1.303 schwarze 1143: int done; /* no more input available */
1.315 schwarze 1144: int deftype; /* type of definition to paste */
1.323 schwarze 1145: int rcsid; /* kind of RCS id seen */
1.327 schwarze 1146: char sign; /* increment number register */
1.206 schwarze 1147: char term; /* character terminating the escape */
1.94 kristaps 1148:
1.303 schwarze 1149: /* Search forward for comments. */
1150:
1151: done = 0;
1152: start = buf->buf + pos;
1153: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1154: if (stesc[0] != r->escape || stesc[1] == '\0')
1155: continue;
1156: stesc++;
1157: if (*stesc != '"' && *stesc != '#')
1158: continue;
1.313 schwarze 1159:
1160: /* Comment found, look for RCS id. */
1161:
1.323 schwarze 1162: rcsid = 0;
1.313 schwarze 1163: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1164: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1165: cp += 8;
1166: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1167: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1168: cp += 7;
1169: }
1170: if (cp != NULL &&
1171: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1172: strchr(cp, '$') != NULL) {
1.323 schwarze 1173: if (r->man->meta.rcsids & rcsid)
1.314 schwarze 1174: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1175: ln, stesc + 1 - buf->buf, stesc + 1);
1.323 schwarze 1176: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1177: }
1.313 schwarze 1178:
1179: /* Handle trailing whitespace. */
1180:
1.328 schwarze 1181: ep = strchr(stesc--, '\0') - 1;
1182: if (*ep == '\n') {
1.303 schwarze 1183: done = 1;
1.328 schwarze 1184: ep--;
1.303 schwarze 1185: }
1.328 schwarze 1186: if (*ep == ' ' || *ep == '\t')
1.303 schwarze 1187: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1.328 schwarze 1188: ln, ep - buf->buf, NULL);
1189:
1190: /*
1191: * Save comments preceding the title macro
1192: * in the syntax tree.
1193: */
1194:
1195: if (r->format == 0) {
1196: while (*ep == ' ' || *ep == '\t')
1197: ep--;
1198: ep[1] = '\0';
1199: n = roff_node_alloc(r->man,
1200: ln, stesc + 1 - buf->buf,
1201: ROFFT_COMMENT, TOKEN_NONE);
1202: n->string = mandoc_strdup(stesc + 2);
1203: roff_node_append(r->man, n);
1204: n->flags |= NODE_VALID | NODE_ENDED;
1205: r->man->next = ROFF_NEXT_SIBLING;
1206: }
1207:
1208: /* Discard comments. */
1209:
1.303 schwarze 1210: while (stesc > start && stesc[-1] == ' ')
1211: stesc--;
1212: *stesc = '\0';
1213: break;
1214: }
1215: if (stesc == start)
1216: return ROFF_CONT;
1217: stesc--;
1218:
1219: /* Notice the end of the input. */
1220:
1221: if (*stesc == '\n') {
1222: *stesc-- = '\0';
1223: done = 1;
1224: }
1225:
1.170 schwarze 1226: expand_count = 0;
1.303 schwarze 1227: while (stesc >= start) {
1.170 schwarze 1228:
1.205 schwarze 1229: /* Search backwards for the next backslash. */
1230:
1.303 schwarze 1231: if (*stesc != r->escape) {
1232: if (*stesc == '\\') {
1233: *stesc = '\0';
1234: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1235: buf->buf, stesc + 1) + 1;
1236: start = nbuf + pos;
1237: stesc = nbuf + (stesc - buf->buf);
1238: free(buf->buf);
1239: buf->buf = nbuf;
1240: }
1241: stesc--;
1.205 schwarze 1242: continue;
1.303 schwarze 1243: }
1.205 schwarze 1244:
1245: /* If it is escaped, skip it. */
1246:
1247: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1248: if (*cp != r->escape)
1.205 schwarze 1249: break;
1250:
1.238 schwarze 1251: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1252: while (stesc > cp)
1253: *stesc-- = '\\';
1.205 schwarze 1254: continue;
1.303 schwarze 1255: } else if (stesc[1] != '\0') {
1256: *stesc = '\\';
1257: } else {
1258: *stesc-- = '\0';
1259: if (done)
1260: continue;
1261: else
1262: return ROFF_APPEND;
1.205 schwarze 1263: }
1.108 schwarze 1264:
1.206 schwarze 1265: /* Decide whether to expand or to check only. */
1.108 schwarze 1266:
1.206 schwarze 1267: term = '\0';
1.205 schwarze 1268: cp = stesc + 1;
1.181 schwarze 1269: switch (*cp) {
1.207 schwarze 1270: case '*':
1.181 schwarze 1271: res = NULL;
1272: break;
1.207 schwarze 1273: case 'B':
1274: case 'w':
1.206 schwarze 1275: term = cp[1];
1276: /* FALLTHROUGH */
1.207 schwarze 1277: case 'n':
1.327 schwarze 1278: sign = cp[1];
1279: if (sign == '+' || sign == '-')
1280: cp++;
1.181 schwarze 1281: res = ubuf;
1282: break;
1283: default:
1.237 schwarze 1284: esc = mandoc_escape(&cp, &stnam, &inaml);
1285: if (esc == ESCAPE_ERROR ||
1286: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1287: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1288: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1289: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1290: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1291: stesc--;
1.205 schwarze 1292: continue;
1.152 kristaps 1293: }
1294:
1.205 schwarze 1295: if (EXPAND_LIMIT < ++expand_count) {
1296: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1297: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1298: return ROFF_IGN;
1.205 schwarze 1299: }
1.108 schwarze 1300:
1301: /*
1302: * The third character decides the length
1.181 schwarze 1303: * of the name of the string or register.
1.108 schwarze 1304: * Save a pointer to the name.
1305: */
1306:
1.238 schwarze 1307: if (term == '\0') {
1.206 schwarze 1308: switch (*++cp) {
1.207 schwarze 1309: case '\0':
1.206 schwarze 1310: maxl = 0;
1311: break;
1.207 schwarze 1312: case '(':
1.206 schwarze 1313: cp++;
1314: maxl = 2;
1315: break;
1.207 schwarze 1316: case '[':
1.206 schwarze 1317: cp++;
1318: term = ']';
1319: maxl = 0;
1320: break;
1321: default:
1322: maxl = 1;
1323: break;
1324: }
1325: } else {
1326: cp += 2;
1.94 kristaps 1327: maxl = 0;
1328: }
1.108 schwarze 1329: stnam = cp;
1.94 kristaps 1330:
1.108 schwarze 1331: /* Advance to the end of the name. */
1.94 kristaps 1332:
1.253 schwarze 1333: naml = 0;
1.218 schwarze 1334: arg_complete = 1;
1.253 schwarze 1335: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1336: if (*cp == '\0') {
1.219 schwarze 1337: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1338: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1339: arg_complete = 0;
1.206 schwarze 1340: break;
1.153 kristaps 1341: }
1.238 schwarze 1342: if (maxl == 0 && *cp == term) {
1.206 schwarze 1343: cp++;
1.253 schwarze 1344: break;
1345: }
1346: if (*cp++ != '\\' || stesc[1] != 'w') {
1347: naml++;
1348: continue;
1349: }
1350: switch (mandoc_escape(&cp, NULL, NULL)) {
1351: case ESCAPE_SPECIAL:
1352: case ESCAPE_UNICODE:
1353: case ESCAPE_NUMBERED:
1354: case ESCAPE_OVERSTRIKE:
1355: naml++;
1356: break;
1357: default:
1.94 kristaps 1358: break;
1.206 schwarze 1359: }
1.94 kristaps 1360: }
1361:
1.108 schwarze 1362: /*
1363: * Retrieve the replacement string; if it is
1364: * undefined, resume searching for escapes.
1365: */
1366:
1.206 schwarze 1367: switch (stesc[1]) {
1.207 schwarze 1368: case '*':
1.315 schwarze 1369: if (arg_complete) {
1370: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1371: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1372:
1373: /*
1374: * If not overriden, let \*(.T
1375: * through to the formatters.
1376: */
1377:
1378: if (res == NULL && naml == 2 &&
1379: stnam[0] == '.' && stnam[1] == 'T') {
1380: roff_setstrn(&r->strtab,
1381: ".T", 2, NULL, 0, 0);
1382: stesc--;
1383: continue;
1384: }
1.315 schwarze 1385: }
1.206 schwarze 1386: break;
1.207 schwarze 1387: case 'B':
1.206 schwarze 1388: npos = 0;
1.218 schwarze 1389: ubuf[0] = arg_complete &&
1.261 schwarze 1390: roff_evalnum(r, ln, stnam, &npos,
1391: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1392: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1393: ubuf[1] = '\0';
1394: break;
1.207 schwarze 1395: case 'n':
1.218 schwarze 1396: if (arg_complete)
1397: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1398: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1399: else
1400: ubuf[0] = '\0';
1.206 schwarze 1401: break;
1.207 schwarze 1402: case 'w':
1.218 schwarze 1403: /* use even incomplete args */
1.208 schwarze 1404: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1405: 24 * (int)naml);
1406: break;
1407: }
1.94 kristaps 1408:
1.238 schwarze 1409: if (res == NULL) {
1.219 schwarze 1410: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1411: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1412: "%.*s", (int)naml, stnam);
1.142 kristaps 1413: res = "";
1.246 schwarze 1414: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1415: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1416: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1417: return ROFF_IGN;
1.94 kristaps 1418: }
1419:
1.108 schwarze 1420: /* Replace the escape sequence by the string. */
1421:
1.209 schwarze 1422: *stesc = '\0';
1.238 schwarze 1423: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1424: buf->buf, res, cp) + 1;
1.94 kristaps 1425:
1.205 schwarze 1426: /* Prepare for the next replacement. */
1.94 kristaps 1427:
1.205 schwarze 1428: start = nbuf + pos;
1.238 schwarze 1429: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1430: free(buf->buf);
1431: buf->buf = nbuf;
1.154 kristaps 1432: }
1.277 schwarze 1433: return ROFF_CONT;
1.154 kristaps 1434: }
1435:
1436: /*
1.275 schwarze 1437: * Process text streams.
1.154 kristaps 1438: */
1439: static enum rofferr
1.305 schwarze 1440: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1441: {
1442: size_t sz;
1443: const char *start;
1.178 schwarze 1444: char *p;
1445: int isz;
1.154 kristaps 1446: enum mandoc_esc esc;
1447:
1.275 schwarze 1448: /* Spring the input line trap. */
1449:
1450: if (roffit_lines == 1) {
1451: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1452: free(buf->buf);
1453: buf->buf = p;
1454: buf->sz = isz + 1;
1455: *offs = 0;
1456: free(roffit_macro);
1457: roffit_lines = 0;
1.277 schwarze 1458: return ROFF_REPARSE;
1.275 schwarze 1459: } else if (roffit_lines > 1)
1460: --roffit_lines;
1461:
1.305 schwarze 1462: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1463: if (roffce_lines < 1) {
1464: r->man->last = roffce_node;
1465: r->man->next = ROFF_NEXT_SIBLING;
1466: roffce_lines = 0;
1467: roffce_node = NULL;
1468: } else
1469: roffce_lines--;
1470: }
1471:
1.275 schwarze 1472: /* Convert all breakable hyphens into ASCII_HYPH. */
1473:
1.238 schwarze 1474: start = p = buf->buf + pos;
1.154 kristaps 1475:
1.238 schwarze 1476: while (*p != '\0') {
1.154 kristaps 1477: sz = strcspn(p, "-\\");
1478: p += sz;
1479:
1.238 schwarze 1480: if (*p == '\0')
1.159 kristaps 1481: break;
1482:
1.238 schwarze 1483: if (*p == '\\') {
1.154 kristaps 1484: /* Skip over escapes. */
1485: p++;
1.189 schwarze 1486: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1487: if (esc == ESCAPE_ERROR)
1.154 kristaps 1488: break;
1.264 schwarze 1489: while (*p == '-')
1490: p++;
1.155 kristaps 1491: continue;
1.159 kristaps 1492: } else if (p == start) {
1.158 kristaps 1493: p++;
1.155 kristaps 1494: continue;
1.158 kristaps 1495: }
1.155 kristaps 1496:
1.171 schwarze 1497: if (isalpha((unsigned char)p[-1]) &&
1498: isalpha((unsigned char)p[1]))
1.155 kristaps 1499: *p = ASCII_HYPH;
1500: p++;
1.94 kristaps 1501: }
1.277 schwarze 1502: return ROFF_CONT;
1.94 kristaps 1503: }
1504:
1.67 kristaps 1505: enum rofferr
1.238 schwarze 1506: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1507: {
1.294 schwarze 1508: enum roff_tok t;
1.109 kristaps 1509: enum rofferr e;
1.238 schwarze 1510: int pos; /* parse point */
1.243 schwarze 1511: int spos; /* saved parse point for messages */
1.238 schwarze 1512: int ppos; /* original offset in buf->buf */
1513: int ctl; /* macro line (boolean) */
1514:
1515: ppos = pos = *offs;
1.79 kristaps 1516:
1.230 schwarze 1517: /* Handle in-line equation delimiters. */
1518:
1.236 schwarze 1519: if (r->tbl == NULL &&
1520: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1521: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1522: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1523: if (e == ROFF_REPARSE)
1.277 schwarze 1524: return e;
1.230 schwarze 1525: assert(e == ROFF_CONT);
1526: }
1527:
1528: /* Expand some escape sequences. */
1.94 kristaps 1529:
1.238 schwarze 1530: e = roff_res(r, buf, ln, pos);
1.303 schwarze 1531: if (e == ROFF_IGN || e == ROFF_APPEND)
1.277 schwarze 1532: return e;
1.238 schwarze 1533: assert(e == ROFF_CONT);
1.94 kristaps 1534:
1.238 schwarze 1535: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1536:
1.94 kristaps 1537: /*
1.79 kristaps 1538: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1539: * text through the macro's filter.
1540: * Equations process all content themselves.
1541: * Tables process almost all content themselves, but we want
1542: * to warn about macros before passing it there.
1.79 kristaps 1543: */
1.74 kristaps 1544:
1.252 schwarze 1545: if (r->last != NULL && ! ctl) {
1.78 kristaps 1546: t = r->last->tok;
1.238 schwarze 1547: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1548: if (e == ROFF_IGN)
1.277 schwarze 1549: return e;
1.294 schwarze 1550: assert(e == ROFF_CONT);
1.182 schwarze 1551: }
1.319 schwarze 1552: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1553: eqn_read(r->eqn, buf->buf + ppos);
1554: return ROFF_IGN;
1555: }
1.321 schwarze 1556: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1557: tbl_read(r->tbl, ln, buf->buf, ppos);
1558: roff_addtbl(r->man, r->tbl);
1559: return ROFF_IGN;
1560: }
1.252 schwarze 1561: if ( ! ctl)
1.305 schwarze 1562: return roff_parsetext(r, buf, pos, offs);
1.228 schwarze 1563:
1564: /* Skip empty request lines. */
1565:
1.238 schwarze 1566: if (buf->buf[pos] == '"') {
1.228 schwarze 1567: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1568: ln, pos, NULL);
1.277 schwarze 1569: return ROFF_IGN;
1.238 schwarze 1570: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1571: return ROFF_IGN;
1.67 kristaps 1572:
1.79 kristaps 1573: /*
1574: * If a scope is open, go to the child handler for that macro,
1575: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1576: * Don't do so if an equation is open.
1.79 kristaps 1577: */
1.78 kristaps 1578:
1.79 kristaps 1579: if (r->last) {
1580: t = r->last->tok;
1.277 schwarze 1581: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1582: }
1.78 kristaps 1583:
1.243 schwarze 1584: /* No scope is open. This is a new request or macro. */
1585:
1586: spos = pos;
1587: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1588:
1589: /* Tables ignore most macros. */
1590:
1.308 schwarze 1591: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1592: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.243 schwarze 1593: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1594: ln, pos, buf->buf + spos);
1.308 schwarze 1595: if (t != TOKEN_NONE)
1.277 schwarze 1596: return ROFF_IGN;
1.257 schwarze 1597: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1598: pos++;
1.291 schwarze 1599: while (buf->buf[pos] == ' ')
1.257 schwarze 1600: pos++;
1.321 schwarze 1601: tbl_read(r->tbl, ln, buf->buf, pos);
1602: roff_addtbl(r->man, r->tbl);
1603: return ROFF_IGN;
1.243 schwarze 1604: }
1605:
1.305 schwarze 1606: /* For now, let high level macros abort .ce mode. */
1607:
1608: if (ctl && roffce_node != NULL &&
1.324 schwarze 1609: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1610: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1611: r->man->last = roffce_node;
1612: r->man->next = ROFF_NEXT_SIBLING;
1613: roffce_lines = 0;
1614: roffce_node = NULL;
1615: }
1616:
1.79 kristaps 1617: /*
1.243 schwarze 1618: * This is neither a roff request nor a user-defined macro.
1619: * Let the standard macro set parsers handle it.
1.79 kristaps 1620: */
1.67 kristaps 1621:
1.294 schwarze 1622: if (t == TOKEN_NONE)
1.277 schwarze 1623: return ROFF_CONT;
1.243 schwarze 1624:
1625: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1626:
1.296 schwarze 1627: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1628: }
1629:
1.117 kristaps 1630: void
1.74 kristaps 1631: roff_endparse(struct roff *r)
1632: {
1.321 schwarze 1633: if (r->last != NULL)
1.221 schwarze 1634: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1635: r->last->line, r->last->col,
1.295 schwarze 1636: roff_name[r->last->tok]);
1.117 kristaps 1637:
1.321 schwarze 1638: if (r->eqn != NULL) {
1.221 schwarze 1639: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.319 schwarze 1640: r->eqn->node->line, r->eqn->node->pos, "EQ");
1641: eqn_parse(r->eqn);
1642: r->eqn = NULL;
1.125 kristaps 1643: }
1644:
1.321 schwarze 1645: if (r->tbl != NULL) {
1.221 schwarze 1646: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1647: r->tbl->line, r->tbl->pos, "TS");
1.321 schwarze 1648: tbl_end(r->tbl);
1649: r->tbl = NULL;
1.117 kristaps 1650: }
1.67 kristaps 1651: }
1652:
1653: /*
1654: * Parse a roff node's type from the input buffer. This must be in the
1655: * form of ".foo xxx" in the usual way.
1656: */
1.294 schwarze 1657: static enum roff_tok
1.214 schwarze 1658: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1659: {
1.214 schwarze 1660: char *cp;
1.106 kristaps 1661: const char *mac;
1662: size_t maclen;
1.315 schwarze 1663: int deftype;
1.294 schwarze 1664: enum roff_tok t;
1.67 kristaps 1665:
1.214 schwarze 1666: cp = buf + *pos;
1667:
1668: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1669: return TOKEN_NONE;
1.67 kristaps 1670:
1.214 schwarze 1671: mac = cp;
1672: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1673:
1.315 schwarze 1674: deftype = ROFFDEF_USER | ROFFDEF_REN;
1675: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1676: switch (deftype) {
1677: case ROFFDEF_USER:
1678: t = ROFF_USERDEF;
1679: break;
1680: case ROFFDEF_REN:
1681: t = ROFF_RENAMED;
1682: break;
1683: default:
1684: t = roffhash_find(r->reqtab, mac, maclen);
1685: break;
1686: }
1.294 schwarze 1687: if (t != TOKEN_NONE)
1.214 schwarze 1688: *pos = cp - buf;
1.325 schwarze 1689: else if (deftype == ROFFDEF_UNDEF) {
1690: /* Using an undefined macro defines it to be empty. */
1691: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1692: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1693: }
1.277 schwarze 1694: return t;
1.67 kristaps 1695: }
1696:
1.266 schwarze 1697: /* --- handling of request blocks ----------------------------------------- */
1698:
1.67 kristaps 1699: static enum rofferr
1.76 kristaps 1700: roff_cblock(ROFF_ARGS)
1.67 kristaps 1701: {
1702:
1.79 kristaps 1703: /*
1704: * A block-close `..' should only be invoked as a child of an
1705: * ignore macro, otherwise raise a warning and just ignore it.
1706: */
1707:
1.238 schwarze 1708: if (r->last == NULL) {
1.221 schwarze 1709: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1710: ln, ppos, "..");
1.277 schwarze 1711: return ROFF_IGN;
1.76 kristaps 1712: }
1.67 kristaps 1713:
1.81 kristaps 1714: switch (r->last->tok) {
1.207 schwarze 1715: case ROFF_am:
1.220 schwarze 1716: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1717: case ROFF_ami:
1718: case ROFF_de:
1.108 schwarze 1719: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1720: case ROFF_dei:
1721: case ROFF_ig:
1.81 kristaps 1722: break;
1723: default:
1.221 schwarze 1724: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1725: ln, ppos, "..");
1.277 schwarze 1726: return ROFF_IGN;
1.76 kristaps 1727: }
1.67 kristaps 1728:
1.238 schwarze 1729: if (buf->buf[pos] != '\0')
1.217 schwarze 1730: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1731: ".. %s", buf->buf + pos);
1.71 kristaps 1732:
1733: roffnode_pop(r);
1.76 kristaps 1734: roffnode_cleanscope(r);
1.277 schwarze 1735: return ROFF_IGN;
1.71 kristaps 1736:
1.67 kristaps 1737: }
1738:
1.76 kristaps 1739: static void
1740: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1741: {
1742:
1.76 kristaps 1743: while (r->last) {
1.173 schwarze 1744: if (--r->last->endspan != 0)
1.76 kristaps 1745: break;
1746: roffnode_pop(r);
1747: }
1.67 kristaps 1748: }
1749:
1.195 schwarze 1750: static void
1751: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1752: {
1753:
1.76 kristaps 1754: if (NULL == r->last) {
1.221 schwarze 1755: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1756: ln, ppos, "\\}");
1.195 schwarze 1757: return;
1.76 kristaps 1758: }
1759:
1.82 kristaps 1760: switch (r->last->tok) {
1.207 schwarze 1761: case ROFF_el:
1762: case ROFF_ie:
1763: case ROFF_if:
1.82 kristaps 1764: break;
1765: default:
1.221 schwarze 1766: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1767: ln, ppos, "\\}");
1.195 schwarze 1768: return;
1.75 kristaps 1769: }
1770:
1.76 kristaps 1771: if (r->last->endspan > -1) {
1.221 schwarze 1772: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1773: ln, ppos, "\\}");
1.195 schwarze 1774: return;
1.76 kristaps 1775: }
1776:
1.75 kristaps 1777: roffnode_pop(r);
1.76 kristaps 1778: roffnode_cleanscope(r);
1.195 schwarze 1779: return;
1.76 kristaps 1780: }
1781:
1782: static enum rofferr
1.80 kristaps 1783: roff_block(ROFF_ARGS)
1.76 kristaps 1784: {
1.315 schwarze 1785: const char *name, *value;
1786: char *call, *cp, *iname, *rname;
1787: size_t csz, namesz, rsz;
1788: int deftype;
1.106 kristaps 1789:
1.220 schwarze 1790: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1791:
1.238 schwarze 1792: if (tok == ROFF_de1)
1.220 schwarze 1793: tok = ROFF_de;
1.251 schwarze 1794: else if (tok == ROFF_dei1)
1795: tok = ROFF_dei;
1.238 schwarze 1796: else if (tok == ROFF_am1)
1.220 schwarze 1797: tok = ROFF_am;
1.251 schwarze 1798: else if (tok == ROFF_ami1)
1799: tok = ROFF_ami;
1.220 schwarze 1800:
1801: /* Parse the macro name argument. */
1802:
1.238 schwarze 1803: cp = buf->buf + pos;
1804: if (tok == ROFF_ig) {
1.220 schwarze 1805: iname = NULL;
1806: namesz = 0;
1807: } else {
1808: iname = cp;
1809: namesz = roff_getname(r, &cp, ln, ppos);
1810: iname[namesz] = '\0';
1811: }
1.107 kristaps 1812:
1.220 schwarze 1813: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1814:
1.238 schwarze 1815: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1816: deftype = ROFFDEF_USER;
1817: name = roff_getstrn(r, iname, namesz, &deftype);
1818: if (name == NULL) {
1.220 schwarze 1819: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1820: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1821: "%.*s", (int)namesz, iname);
1822: namesz = 0;
1823: } else
1824: namesz = strlen(name);
1825: } else
1826: name = iname;
1.107 kristaps 1827:
1.238 schwarze 1828: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1829: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1830: ln, ppos, roff_name[tok]);
1.277 schwarze 1831: return ROFF_IGN;
1.220 schwarze 1832: }
1.80 kristaps 1833:
1.106 kristaps 1834: roffnode_push(r, tok, name, ln, ppos);
1835:
1836: /*
1837: * At the beginning of a `de' macro, clear the existing string
1838: * with the same name, if there is one. New content will be
1.193 schwarze 1839: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1840: */
1.107 kristaps 1841:
1.311 schwarze 1842: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 1843: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 1844: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 1845: } else if (tok == ROFF_am || tok == ROFF_ami) {
1846: deftype = ROFFDEF_ANY;
1847: value = roff_getstrn(r, iname, namesz, &deftype);
1848: switch (deftype) { /* Before appending, ... */
1849: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1850: roff_setstrn(&r->strtab, name, namesz,
1851: value, strlen(value), 0);
1852: break;
1853: case ROFFDEF_REN: /* call original standard macro. */
1854: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1855: (int)strlen(value), value);
1856: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1857: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1858: free(call);
1859: break;
1860: case ROFFDEF_STD: /* rename and call standard macro. */
1861: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1862: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1863: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1864: (int)rsz, rname);
1865: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1866: free(call);
1867: free(rname);
1868: break;
1869: default:
1870: break;
1871: }
1.311 schwarze 1872: }
1.76 kristaps 1873:
1.238 schwarze 1874: if (*cp == '\0')
1.277 schwarze 1875: return ROFF_IGN;
1.78 kristaps 1876:
1.220 schwarze 1877: /* Get the custom end marker. */
1.107 kristaps 1878:
1.220 schwarze 1879: iname = cp;
1.213 schwarze 1880: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1881:
1882: /* Resolve the end marker if it is indirect. */
1883:
1.238 schwarze 1884: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1885: deftype = ROFFDEF_USER;
1886: name = roff_getstrn(r, iname, namesz, &deftype);
1887: if (name == NULL) {
1.220 schwarze 1888: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1889: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1890: "%.*s", (int)namesz, iname);
1891: namesz = 0;
1892: } else
1893: namesz = strlen(name);
1894: } else
1895: name = iname;
1896:
1.213 schwarze 1897: if (namesz)
1898: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1899:
1.238 schwarze 1900: if (*cp != '\0')
1.217 schwarze 1901: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 1902: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 1903:
1.277 schwarze 1904: return ROFF_IGN;
1.78 kristaps 1905: }
1906:
1907: static enum rofferr
1.80 kristaps 1908: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1909: {
1.294 schwarze 1910: enum roff_tok t;
1.79 kristaps 1911: int i, j;
1912:
1913: /*
1914: * First check whether a custom macro exists at this level. If
1915: * it does, then check against it. This is some of groff's
1916: * stranger behaviours. If we encountered a custom end-scope
1917: * tag and that tag also happens to be a "real" macro, then we
1918: * need to try interpreting it again as a real macro. If it's
1919: * not, then return ignore. Else continue.
1920: */
1921:
1922: if (r->last->end) {
1.130 kristaps 1923: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1924: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1925: break;
1926:
1.238 schwarze 1927: if (r->last->end[j] == '\0' &&
1928: (buf->buf[i] == '\0' ||
1929: buf->buf[i] == ' ' ||
1930: buf->buf[i] == '\t')) {
1.79 kristaps 1931: roffnode_pop(r);
1932: roffnode_cleanscope(r);
1933:
1.238 schwarze 1934: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1935: i++;
1936:
1937: pos = i;
1.238 schwarze 1938: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 1939: TOKEN_NONE)
1.277 schwarze 1940: return ROFF_RERUN;
1941: return ROFF_IGN;
1.79 kristaps 1942: }
1943: }
1944:
1945: /*
1946: * If we have no custom end-query or lookup failed, then try
1947: * pulling it out of the hashtable.
1948: */
1949:
1.238 schwarze 1950: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1951:
1.238 schwarze 1952: if (t != ROFF_cblock) {
1953: if (tok != ROFF_ig)
1954: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1955: return ROFF_IGN;
1.106 kristaps 1956: }
1.79 kristaps 1957:
1.277 schwarze 1958: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1959: }
1960:
1961: static enum rofferr
1.80 kristaps 1962: roff_block_text(ROFF_ARGS)
1.78 kristaps 1963: {
1964:
1.238 schwarze 1965: if (tok != ROFF_ig)
1966: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1967:
1.277 schwarze 1968: return ROFF_IGN;
1.78 kristaps 1969: }
1970:
1971: static enum rofferr
1.82 kristaps 1972: roff_cond_sub(ROFF_ARGS)
1973: {
1.294 schwarze 1974: enum roff_tok t;
1.139 kristaps 1975: char *ep;
1.198 schwarze 1976: int rr;
1.82 kristaps 1977:
1978: rr = r->last->rule;
1.139 kristaps 1979: roffnode_cleanscope(r);
1.144 kristaps 1980:
1.196 schwarze 1981: /*
1982: * If `\}' occurs on a macro line without a preceding macro,
1983: * drop the line completely.
1984: */
1985:
1.238 schwarze 1986: ep = buf->buf + pos;
1987: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1988: rr = 0;
1.196 schwarze 1989:
1.177 schwarze 1990: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1991:
1.238 schwarze 1992: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 1993: switch (ep[1]) {
1994: case '}':
1995: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1996: roff_ccond(r, ln, ep - buf->buf);
1997: break;
1998: case '\0':
1999: ++ep;
2000: break;
2001: default:
2002: ep += 2;
2003: break;
1.197 schwarze 2004: }
1.177 schwarze 2005: }
1.318 schwarze 2006:
2007: /*
2008: * Fully handle known macros when they are structurally
2009: * required or when the conditional evaluated to true.
2010: */
2011:
2012: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2013: return t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT)
2014: ? (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) : rr
2015: ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 2016: }
2017:
2018: static enum rofferr
2019: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2020: {
1.140 kristaps 2021: char *ep;
1.198 schwarze 2022: int rr;
1.82 kristaps 2023:
2024: rr = r->last->rule;
1.140 kristaps 2025: roffnode_cleanscope(r);
1.82 kristaps 2026:
1.238 schwarze 2027: ep = buf->buf + pos;
2028: while ((ep = strchr(ep, '\\')) != NULL) {
2029: if (*(++ep) == '}') {
1.197 schwarze 2030: *ep = '&';
1.238 schwarze 2031: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 2032: }
1.247 schwarze 2033: if (*ep != '\0')
2034: ++ep;
1.78 kristaps 2035: }
1.277 schwarze 2036: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 2037: }
2038:
1.266 schwarze 2039: /* --- handling of numeric and conditional expressions -------------------- */
2040:
1.204 schwarze 2041: /*
2042: * Parse a single signed integer number. Stop at the first non-digit.
2043: * If there is at least one digit, return success and advance the
2044: * parse point, else return failure and let the parse point unchanged.
2045: * Ignore overflows, treat them just like the C language.
2046: */
1.184 schwarze 2047: static int
1.261 schwarze 2048: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2049: {
1.261 schwarze 2050: int myres, scaled, n, p;
1.206 schwarze 2051:
2052: if (NULL == res)
2053: res = &myres;
1.184 schwarze 2054:
2055: p = *pos;
2056: n = v[p] == '-';
1.261 schwarze 2057: if (n || v[p] == '+')
1.184 schwarze 2058: p++;
2059:
1.261 schwarze 2060: if (flags & ROFFNUM_WHITE)
2061: while (isspace((unsigned char)v[p]))
2062: p++;
2063:
1.184 schwarze 2064: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2065: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2066: if (p == *pos + n)
2067: return 0;
2068:
2069: if (n)
2070: *res = -*res;
2071:
1.254 schwarze 2072: /* Each number may be followed by one optional scaling unit. */
2073:
2074: switch (v[p]) {
2075: case 'f':
1.261 schwarze 2076: scaled = *res * 65536;
1.254 schwarze 2077: break;
2078: case 'i':
1.261 schwarze 2079: scaled = *res * 240;
1.254 schwarze 2080: break;
2081: case 'c':
1.261 schwarze 2082: scaled = *res * 240 / 2.54;
1.254 schwarze 2083: break;
2084: case 'v':
2085: case 'P':
1.261 schwarze 2086: scaled = *res * 40;
1.254 schwarze 2087: break;
2088: case 'm':
2089: case 'n':
1.261 schwarze 2090: scaled = *res * 24;
1.254 schwarze 2091: break;
2092: case 'p':
1.261 schwarze 2093: scaled = *res * 10 / 3;
1.254 schwarze 2094: break;
2095: case 'u':
1.261 schwarze 2096: scaled = *res;
1.254 schwarze 2097: break;
2098: case 'M':
1.261 schwarze 2099: scaled = *res * 6 / 25;
1.254 schwarze 2100: break;
2101: default:
1.261 schwarze 2102: scaled = *res;
1.254 schwarze 2103: p--;
2104: break;
2105: }
1.261 schwarze 2106: if (flags & ROFFNUM_SCALE)
2107: *res = scaled;
1.254 schwarze 2108:
2109: *pos = p + 1;
1.277 schwarze 2110: return 1;
1.184 schwarze 2111: }
2112:
1.198 schwarze 2113: /*
2114: * Evaluate a string comparison condition.
2115: * The first character is the delimiter.
2116: * Succeed if the string up to its second occurrence
2117: * matches the string up to its third occurence.
2118: * Advance the cursor after the third occurrence
2119: * or lacking that, to the end of the line.
2120: */
2121: static int
2122: roff_evalstrcond(const char *v, int *pos)
2123: {
2124: const char *s1, *s2, *s3;
2125: int match;
2126:
2127: match = 0;
2128: s1 = v + *pos; /* initial delimiter */
2129: s2 = s1 + 1; /* for scanning the first string */
2130: s3 = strchr(s2, *s1); /* for scanning the second string */
2131:
2132: if (NULL == s3) /* found no middle delimiter */
2133: goto out;
2134:
2135: while ('\0' != *++s3) {
2136: if (*s2 != *s3) { /* mismatch */
2137: s3 = strchr(s3, *s1);
2138: break;
2139: }
2140: if (*s3 == *s1) { /* found the final delimiter */
2141: match = 1;
2142: break;
2143: }
2144: s2++;
2145: }
2146:
2147: out:
2148: if (NULL == s3)
2149: s3 = strchr(s2, '\0');
1.242 schwarze 2150: else if (*s3 != '\0')
1.198 schwarze 2151: s3++;
2152: *pos = s3 - v;
1.277 schwarze 2153: return match;
1.198 schwarze 2154: }
2155:
1.204 schwarze 2156: /*
2157: * Evaluate an optionally negated single character, numerical,
2158: * or string condition.
2159: */
1.198 schwarze 2160: static int
1.271 schwarze 2161: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2162: {
1.271 schwarze 2163: char *cp, *name;
2164: size_t sz;
1.315 schwarze 2165: int deftype, number, savepos, istrue, wanttrue;
1.88 kristaps 2166:
1.198 schwarze 2167: if ('!' == v[*pos]) {
2168: wanttrue = 0;
2169: (*pos)++;
2170: } else
2171: wanttrue = 1;
2172:
1.88 kristaps 2173: switch (v[*pos]) {
1.240 schwarze 2174: case '\0':
1.277 schwarze 2175: return 0;
1.207 schwarze 2176: case 'n':
2177: case 'o':
1.88 kristaps 2178: (*pos)++;
1.277 schwarze 2179: return wanttrue;
1.207 schwarze 2180: case 'c':
2181: case 'e':
2182: case 't':
1.239 schwarze 2183: case 'v':
1.88 kristaps 2184: (*pos)++;
1.277 schwarze 2185: return !wanttrue;
1.310 schwarze 2186: case 'd':
1.271 schwarze 2187: case 'r':
1.310 schwarze 2188: cp = v + *pos + 1;
2189: while (*cp == ' ')
2190: cp++;
2191: name = cp;
2192: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2193: if (sz == 0)
2194: istrue = 0;
2195: else if (v[*pos] == 'r')
2196: istrue = roff_hasregn(r, name, sz);
2197: else {
2198: deftype = ROFFDEF_ANY;
2199: roff_getstrn(r, name, sz, &deftype);
2200: istrue = !!deftype;
2201: }
1.271 schwarze 2202: *pos = cp - v;
1.310 schwarze 2203: return istrue == wanttrue;
1.88 kristaps 2204: default:
2205: break;
2206: }
2207:
1.241 schwarze 2208: savepos = *pos;
1.261 schwarze 2209: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2210: return (number > 0) == wanttrue;
1.241 schwarze 2211: else if (*pos == savepos)
1.277 schwarze 2212: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2213: else
1.277 schwarze 2214: return 0;
1.88 kristaps 2215: }
2216:
1.74 kristaps 2217: static enum rofferr
1.103 kristaps 2218: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2219: {
1.123 schwarze 2220:
1.277 schwarze 2221: return ROFF_IGN;
1.89 kristaps 2222: }
2223:
1.104 kristaps 2224: static enum rofferr
1.251 schwarze 2225: roff_insec(ROFF_ARGS)
2226: {
2227:
2228: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2229: ln, ppos, roff_name[tok]);
1.277 schwarze 2230: return ROFF_IGN;
1.251 schwarze 2231: }
2232:
2233: static enum rofferr
2234: roff_unsupp(ROFF_ARGS)
2235: {
2236:
2237: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2238: ln, ppos, roff_name[tok]);
1.277 schwarze 2239: return ROFF_IGN;
1.251 schwarze 2240: }
2241:
2242: static enum rofferr
1.82 kristaps 2243: roff_cond(ROFF_ARGS)
1.74 kristaps 2244: {
1.173 schwarze 2245:
2246: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2247:
1.207 schwarze 2248: /*
1.134 kristaps 2249: * An `.el' has no conditional body: it will consume the value
2250: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2251: * defaults to DENY.
1.134 kristaps 2252: *
2253: * If we're not an `el', however, then evaluate the conditional.
2254: */
1.133 kristaps 2255:
1.238 schwarze 2256: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2257: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2258: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2259:
1.134 kristaps 2260: /*
2261: * An if-else will put the NEGATION of the current evaluated
2262: * conditional into the stack of rules.
2263: */
2264:
1.238 schwarze 2265: if (tok == ROFF_ie) {
1.223 schwarze 2266: if (r->rstackpos + 1 == r->rstacksz) {
2267: r->rstacksz += 16;
2268: r->rstack = mandoc_reallocarray(r->rstack,
2269: r->rstacksz, sizeof(int));
1.134 kristaps 2270: }
1.198 schwarze 2271: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2272: }
1.88 kristaps 2273:
2274: /* If the parent has false as its rule, then so do we. */
2275:
1.198 schwarze 2276: if (r->last->parent && !r->last->parent->rule)
2277: r->last->rule = 0;
1.88 kristaps 2278:
2279: /*
1.173 schwarze 2280: * Determine scope.
2281: * If there is nothing on the line after the conditional,
2282: * not even whitespace, use next-line scope.
1.88 kristaps 2283: */
1.74 kristaps 2284:
1.238 schwarze 2285: if (buf->buf[pos] == '\0') {
1.173 schwarze 2286: r->last->endspan = 2;
2287: goto out;
2288: }
2289:
1.238 schwarze 2290: while (buf->buf[pos] == ' ')
1.173 schwarze 2291: pos++;
2292:
2293: /* An opening brace requests multiline scope. */
1.75 kristaps 2294:
1.238 schwarze 2295: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2296: r->last->endspan = -1;
2297: pos += 2;
1.272 schwarze 2298: while (buf->buf[pos] == ' ')
2299: pos++;
1.173 schwarze 2300: goto out;
1.207 schwarze 2301: }
1.74 kristaps 2302:
1.77 kristaps 2303: /*
1.173 schwarze 2304: * Anything else following the conditional causes
2305: * single-line scope. Warn if the scope contains
2306: * nothing but trailing whitespace.
1.77 kristaps 2307: */
2308:
1.238 schwarze 2309: if (buf->buf[pos] == '\0')
1.216 schwarze 2310: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2311: ln, ppos, roff_name[tok]);
1.77 kristaps 2312:
1.173 schwarze 2313: r->last->endspan = 1;
1.74 kristaps 2314:
1.173 schwarze 2315: out:
1.75 kristaps 2316: *offs = pos;
1.277 schwarze 2317: return ROFF_RERUN;
1.83 schwarze 2318: }
2319:
2320: static enum rofferr
1.92 schwarze 2321: roff_ds(ROFF_ARGS)
2322: {
1.212 schwarze 2323: char *string;
2324: const char *name;
2325: size_t namesz;
1.96 kristaps 2326:
1.251 schwarze 2327: /* Ignore groff compatibility mode for now. */
2328:
2329: if (tok == ROFF_ds1)
2330: tok = ROFF_ds;
2331: else if (tok == ROFF_as1)
2332: tok = ROFF_as;
2333:
1.96 kristaps 2334: /*
1.212 schwarze 2335: * The first word is the name of the string.
2336: * If it is empty or terminated by an escape sequence,
2337: * abort the `ds' request without defining anything.
1.96 kristaps 2338: */
1.92 schwarze 2339:
1.238 schwarze 2340: name = string = buf->buf + pos;
2341: if (*name == '\0')
1.277 schwarze 2342: return ROFF_IGN;
1.92 schwarze 2343:
1.212 schwarze 2344: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2345: if (name[namesz] == '\\')
1.277 schwarze 2346: return ROFF_IGN;
1.212 schwarze 2347:
2348: /* Read past the initial double-quote, if any. */
1.238 schwarze 2349: if (*string == '"')
1.92 schwarze 2350: string++;
2351:
1.96 kristaps 2352: /* The rest is the value. */
1.212 schwarze 2353: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2354: ROFF_as == tok);
1.311 schwarze 2355: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2356: return ROFF_IGN;
1.92 schwarze 2357: }
2358:
1.204 schwarze 2359: /*
2360: * Parse a single operator, one or two characters long.
2361: * If the operator is recognized, return success and advance the
2362: * parse point, else return failure and let the parse point unchanged.
2363: */
2364: static int
2365: roff_getop(const char *v, int *pos, char *res)
2366: {
2367:
2368: *res = v[*pos];
2369:
2370: switch (*res) {
1.207 schwarze 2371: case '+':
2372: case '-':
2373: case '*':
2374: case '/':
2375: case '%':
2376: case '&':
2377: case ':':
1.204 schwarze 2378: break;
2379: case '<':
2380: switch (v[*pos + 1]) {
1.207 schwarze 2381: case '=':
1.204 schwarze 2382: *res = 'l';
2383: (*pos)++;
2384: break;
1.207 schwarze 2385: case '>':
1.204 schwarze 2386: *res = '!';
2387: (*pos)++;
2388: break;
1.207 schwarze 2389: case '?':
1.204 schwarze 2390: *res = 'i';
2391: (*pos)++;
2392: break;
2393: default:
2394: break;
2395: }
2396: break;
2397: case '>':
2398: switch (v[*pos + 1]) {
1.207 schwarze 2399: case '=':
1.204 schwarze 2400: *res = 'g';
2401: (*pos)++;
2402: break;
1.207 schwarze 2403: case '?':
1.204 schwarze 2404: *res = 'a';
2405: (*pos)++;
2406: break;
2407: default:
2408: break;
2409: }
2410: break;
2411: case '=':
2412: if ('=' == v[*pos + 1])
2413: (*pos)++;
2414: break;
2415: default:
1.277 schwarze 2416: return 0;
1.204 schwarze 2417: }
2418: (*pos)++;
2419:
1.277 schwarze 2420: return *res;
1.204 schwarze 2421: }
2422:
2423: /*
2424: * Evaluate either a parenthesized numeric expression
2425: * or a single signed integer number.
2426: */
2427: static int
1.235 schwarze 2428: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2429: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2430: {
2431:
2432: if ('(' != v[*pos])
1.277 schwarze 2433: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2434:
2435: (*pos)++;
1.261 schwarze 2436: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2437: return 0;
1.204 schwarze 2438:
1.206 schwarze 2439: /*
2440: * Omission of the closing parenthesis
2441: * is an error in validation mode,
2442: * but ignored in evaluation mode.
2443: */
2444:
1.204 schwarze 2445: if (')' == v[*pos])
2446: (*pos)++;
1.206 schwarze 2447: else if (NULL == res)
1.277 schwarze 2448: return 0;
1.204 schwarze 2449:
1.277 schwarze 2450: return 1;
1.204 schwarze 2451: }
2452:
2453: /*
2454: * Evaluate a complete numeric expression.
2455: * Proceed left to right, there is no concept of precedence.
2456: */
2457: static int
1.235 schwarze 2458: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2459: int *pos, int *res, int flags)
1.204 schwarze 2460: {
2461: int mypos, operand2;
2462: char operator;
2463:
2464: if (NULL == pos) {
2465: mypos = 0;
2466: pos = &mypos;
2467: }
2468:
1.261 schwarze 2469: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2470: while (isspace((unsigned char)v[*pos]))
2471: (*pos)++;
2472:
1.261 schwarze 2473: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2474: return 0;
1.204 schwarze 2475:
2476: while (1) {
1.261 schwarze 2477: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2478: while (isspace((unsigned char)v[*pos]))
2479: (*pos)++;
2480:
2481: if ( ! roff_getop(v, pos, &operator))
2482: break;
2483:
1.261 schwarze 2484: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2485: while (isspace((unsigned char)v[*pos]))
2486: (*pos)++;
2487:
1.261 schwarze 2488: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2489: return 0;
1.204 schwarze 2490:
1.261 schwarze 2491: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2492: while (isspace((unsigned char)v[*pos]))
2493: (*pos)++;
1.206 schwarze 2494:
2495: if (NULL == res)
2496: continue;
1.204 schwarze 2497:
2498: switch (operator) {
1.207 schwarze 2499: case '+':
1.204 schwarze 2500: *res += operand2;
2501: break;
1.207 schwarze 2502: case '-':
1.204 schwarze 2503: *res -= operand2;
2504: break;
1.207 schwarze 2505: case '*':
1.204 schwarze 2506: *res *= operand2;
2507: break;
1.207 schwarze 2508: case '/':
1.244 schwarze 2509: if (operand2 == 0) {
1.235 schwarze 2510: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2511: r->parse, ln, *pos, v);
2512: *res = 0;
2513: break;
2514: }
1.204 schwarze 2515: *res /= operand2;
2516: break;
1.207 schwarze 2517: case '%':
1.244 schwarze 2518: if (operand2 == 0) {
2519: mandoc_msg(MANDOCERR_DIVZERO,
2520: r->parse, ln, *pos, v);
2521: *res = 0;
2522: break;
2523: }
1.204 schwarze 2524: *res %= operand2;
2525: break;
1.207 schwarze 2526: case '<':
1.204 schwarze 2527: *res = *res < operand2;
2528: break;
1.207 schwarze 2529: case '>':
1.204 schwarze 2530: *res = *res > operand2;
2531: break;
1.207 schwarze 2532: case 'l':
1.204 schwarze 2533: *res = *res <= operand2;
2534: break;
1.207 schwarze 2535: case 'g':
1.204 schwarze 2536: *res = *res >= operand2;
2537: break;
1.207 schwarze 2538: case '=':
1.204 schwarze 2539: *res = *res == operand2;
2540: break;
1.207 schwarze 2541: case '!':
1.204 schwarze 2542: *res = *res != operand2;
2543: break;
1.207 schwarze 2544: case '&':
1.204 schwarze 2545: *res = *res && operand2;
2546: break;
1.207 schwarze 2547: case ':':
1.204 schwarze 2548: *res = *res || operand2;
2549: break;
1.207 schwarze 2550: case 'i':
1.204 schwarze 2551: if (operand2 < *res)
2552: *res = operand2;
2553: break;
1.207 schwarze 2554: case 'a':
1.204 schwarze 2555: if (operand2 > *res)
2556: *res = operand2;
2557: break;
2558: default:
2559: abort();
2560: }
2561: }
1.277 schwarze 2562: return 1;
1.204 schwarze 2563: }
2564:
1.266 schwarze 2565: /* --- register management ------------------------------------------------ */
2566:
1.180 schwarze 2567: void
1.187 schwarze 2568: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2569: {
1.327 schwarze 2570: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2571: }
2572:
2573: static void
2574: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2575: int val, char sign, int step)
1.326 schwarze 2576: {
1.180 schwarze 2577: struct roffreg *reg;
2578:
2579: /* Search for an existing register with the same name. */
2580: reg = r->regtab;
2581:
1.326 schwarze 2582: while (reg != NULL && (reg->key.sz != len ||
2583: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 2584: reg = reg->next;
1.147 kristaps 2585:
1.180 schwarze 2586: if (NULL == reg) {
2587: /* Create a new register. */
2588: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 2589: reg->key.p = mandoc_strndup(name, len);
2590: reg->key.sz = len;
1.187 schwarze 2591: reg->val = 0;
1.327 schwarze 2592: reg->step = 0;
1.180 schwarze 2593: reg->next = r->regtab;
2594: r->regtab = reg;
2595: }
2596:
1.187 schwarze 2597: if ('+' == sign)
2598: reg->val += val;
2599: else if ('-' == sign)
2600: reg->val -= val;
2601: else
2602: reg->val = val;
1.327 schwarze 2603: if (step != INT_MIN)
2604: reg->step = step;
1.147 kristaps 2605: }
2606:
1.192 schwarze 2607: /*
2608: * Handle some predefined read-only number registers.
2609: * For now, return -1 if the requested register is not predefined;
2610: * in case a predefined read-only register having the value -1
2611: * were to turn up, another special value would have to be chosen.
2612: */
2613: static int
1.273 schwarze 2614: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2615: {
2616:
2617: switch (*name) {
1.273 schwarze 2618: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2619: return r->argc;
1.207 schwarze 2620: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2621: return 0;
1.207 schwarze 2622: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2623: return 1;
1.207 schwarze 2624: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2625: return 24;
1.207 schwarze 2626: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2627: return 0;
1.207 schwarze 2628: case 'T': /* Some output device is always defined. */
1.277 schwarze 2629: return 1;
1.207 schwarze 2630: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2631: return 40;
1.192 schwarze 2632: default:
1.277 schwarze 2633: return -1;
1.192 schwarze 2634: }
2635: }
2636:
1.181 schwarze 2637: int
1.326 schwarze 2638: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 2639: {
1.327 schwarze 2640: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 2641: }
2642:
2643: static int
1.327 schwarze 2644: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 2645: {
2646: struct roffreg *reg;
1.192 schwarze 2647: int val;
2648:
2649: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2650: val = roff_getregro(r, name + 1);
1.192 schwarze 2651: if (-1 != val)
1.277 schwarze 2652: return val;
1.192 schwarze 2653: }
1.181 schwarze 2654:
1.327 schwarze 2655: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 2656: if (len == reg->key.sz &&
1.327 schwarze 2657: 0 == strncmp(name, reg->key.p, len)) {
2658: switch (sign) {
2659: case '+':
2660: reg->val += reg->step;
2661: break;
2662: case '-':
2663: reg->val -= reg->step;
2664: break;
2665: default:
2666: break;
2667: }
1.277 schwarze 2668: return reg->val;
1.327 schwarze 2669: }
2670: }
1.271 schwarze 2671:
1.327 schwarze 2672: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 2673: return 0;
1.271 schwarze 2674: }
2675:
2676: static int
2677: roff_hasregn(const struct roff *r, const char *name, size_t len)
2678: {
2679: struct roffreg *reg;
2680: int val;
2681:
2682: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2683: val = roff_getregro(r, name + 1);
1.271 schwarze 2684: if (-1 != val)
1.277 schwarze 2685: return 1;
1.271 schwarze 2686: }
2687:
2688: for (reg = r->regtab; reg; reg = reg->next)
2689: if (len == reg->key.sz &&
2690: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2691: return 1;
1.147 kristaps 2692:
1.277 schwarze 2693: return 0;
1.147 kristaps 2694: }
2695:
1.180 schwarze 2696: static void
2697: roff_freereg(struct roffreg *reg)
1.147 kristaps 2698: {
1.180 schwarze 2699: struct roffreg *old_reg;
1.147 kristaps 2700:
1.180 schwarze 2701: while (NULL != reg) {
2702: free(reg->key.p);
2703: old_reg = reg;
2704: reg = reg->next;
2705: free(old_reg);
2706: }
1.147 kristaps 2707: }
1.92 schwarze 2708:
2709: static enum rofferr
1.89 kristaps 2710: roff_nr(ROFF_ARGS)
1.83 schwarze 2711: {
1.327 schwarze 2712: char *key, *val, *step;
1.212 schwarze 2713: size_t keysz;
1.327 schwarze 2714: int iv, is, len;
1.187 schwarze 2715: char sign;
1.89 kristaps 2716:
1.238 schwarze 2717: key = val = buf->buf + pos;
2718: if (*key == '\0')
1.277 schwarze 2719: return ROFF_IGN;
1.212 schwarze 2720:
2721: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2722: if (key[keysz] == '\\')
1.277 schwarze 2723: return ROFF_IGN;
1.89 kristaps 2724:
1.187 schwarze 2725: sign = *val;
1.238 schwarze 2726: if (sign == '+' || sign == '-')
1.187 schwarze 2727: val++;
2728:
1.327 schwarze 2729: len = 0;
2730: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2731: return ROFF_IGN;
2732:
2733: step = val + len;
2734: while (isspace((unsigned char)*step))
2735: step++;
2736: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2737: is = INT_MIN;
1.109 kristaps 2738:
1.327 schwarze 2739: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 2740: return ROFF_IGN;
1.203 schwarze 2741: }
2742:
2743: static enum rofferr
2744: roff_rr(ROFF_ARGS)
2745: {
2746: struct roffreg *reg, **prev;
1.212 schwarze 2747: char *name, *cp;
2748: size_t namesz;
1.203 schwarze 2749:
1.238 schwarze 2750: name = cp = buf->buf + pos;
2751: if (*name == '\0')
1.277 schwarze 2752: return ROFF_IGN;
1.212 schwarze 2753: namesz = roff_getname(r, &cp, ln, pos);
2754: name[namesz] = '\0';
1.203 schwarze 2755:
2756: prev = &r->regtab;
2757: while (1) {
2758: reg = *prev;
1.238 schwarze 2759: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2760: break;
2761: prev = ®->next;
2762: }
1.238 schwarze 2763: if (reg != NULL) {
1.203 schwarze 2764: *prev = reg->next;
2765: free(reg->key.p);
2766: free(reg);
2767: }
1.277 schwarze 2768: return ROFF_IGN;
1.122 schwarze 2769: }
2770:
1.266 schwarze 2771: /* --- handler functions for roff requests -------------------------------- */
2772:
1.122 schwarze 2773: static enum rofferr
2774: roff_rm(ROFF_ARGS)
2775: {
2776: const char *name;
2777: char *cp;
1.212 schwarze 2778: size_t namesz;
1.122 schwarze 2779:
1.238 schwarze 2780: cp = buf->buf + pos;
2781: while (*cp != '\0') {
1.212 schwarze 2782: name = cp;
1.238 schwarze 2783: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2784: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 2785: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 2786: if (name[namesz] == '\\')
1.212 schwarze 2787: break;
1.122 schwarze 2788: }
1.277 schwarze 2789: return ROFF_IGN;
1.178 schwarze 2790: }
2791:
2792: static enum rofferr
2793: roff_it(ROFF_ARGS)
2794: {
2795: int iv;
2796:
2797: /* Parse the number of lines. */
1.261 schwarze 2798:
2799: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2800: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2801: ln, ppos, buf->buf + 1);
1.277 schwarze 2802: return ROFF_IGN;
1.178 schwarze 2803: }
2804:
1.262 schwarze 2805: while (isspace((unsigned char)buf->buf[pos]))
2806: pos++;
2807:
2808: /*
2809: * Arm the input line trap.
2810: * Special-casing "an-trap" is an ugly workaround to cope
2811: * with DocBook stupidly fiddling with man(7) internals.
2812: */
1.261 schwarze 2813:
1.178 schwarze 2814: roffit_lines = iv;
1.262 schwarze 2815: roffit_macro = mandoc_strdup(iv != 1 ||
2816: strcmp(buf->buf + pos, "an-trap") ?
2817: buf->buf + pos : "br");
1.277 schwarze 2818: return ROFF_IGN;
1.175 schwarze 2819: }
2820:
2821: static enum rofferr
2822: roff_Dd(ROFF_ARGS)
2823: {
1.315 schwarze 2824: int mask;
2825: enum roff_tok t, te;
1.227 schwarze 2826:
1.315 schwarze 2827: switch (tok) {
2828: case ROFF_Dd:
2829: tok = MDOC_Dd;
2830: te = MDOC_MAX;
2831: if (r->format == 0)
2832: r->format = MPARSE_MDOC;
2833: mask = MPARSE_MDOC | MPARSE_QUICK;
2834: break;
2835: case ROFF_TH:
2836: tok = MAN_TH;
2837: te = MAN_MAX;
2838: if (r->format == 0)
2839: r->format = MPARSE_MAN;
2840: mask = MPARSE_QUICK;
2841: break;
2842: default:
2843: abort();
2844: }
2845: if ((r->options & mask) == 0)
2846: for (t = tok; t < te; t++)
2847: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 2848: return ROFF_CONT;
1.109 kristaps 2849: }
2850:
2851: static enum rofferr
2852: roff_TE(ROFF_ARGS)
2853: {
1.321 schwarze 2854: if (r->tbl == NULL) {
1.221 schwarze 2855: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2856: ln, ppos, "TE");
1.321 schwarze 2857: return ROFF_IGN;
2858: }
2859: if (tbl_end(r->tbl) == 0) {
2860: r->tbl = NULL;
1.258 schwarze 2861: free(buf->buf);
2862: buf->buf = mandoc_strdup(".sp");
2863: buf->sz = 4;
1.329 schwarze 2864: *offs = 0;
1.277 schwarze 2865: return ROFF_REPARSE;
1.258 schwarze 2866: }
1.321 schwarze 2867: r->tbl = NULL;
1.277 schwarze 2868: return ROFF_IGN;
1.112 kristaps 2869: }
2870:
2871: static enum rofferr
2872: roff_T_(ROFF_ARGS)
2873: {
2874:
2875: if (NULL == r->tbl)
1.221 schwarze 2876: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2877: ln, ppos, "T&");
1.112 kristaps 2878: else
1.296 schwarze 2879: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 2880:
1.277 schwarze 2881: return ROFF_IGN;
1.109 kristaps 2882: }
2883:
1.230 schwarze 2884: /*
2885: * Handle in-line equation delimiters.
2886: */
2887: static enum rofferr
1.238 schwarze 2888: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2889: {
1.233 schwarze 2890: char *cp1, *cp2;
2891: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2892:
1.230 schwarze 2893: /*
2894: * Outside equations, look for an opening delimiter.
2895: * If we are inside an equation, we already know it is
2896: * in-line, or this function wouldn't have been called;
2897: * so look for a closing delimiter.
2898: */
2899:
1.238 schwarze 2900: cp1 = buf->buf + pos;
1.230 schwarze 2901: cp2 = strchr(cp1, r->eqn == NULL ?
2902: r->last_eqn->odelim : r->last_eqn->cdelim);
2903: if (cp2 == NULL)
1.277 schwarze 2904: return ROFF_CONT;
1.230 schwarze 2905:
1.233 schwarze 2906: *cp2++ = '\0';
2907: bef_pr = bef_nl = aft_nl = aft_pr = "";
2908:
2909: /* Handle preceding text, protecting whitespace. */
2910:
1.238 schwarze 2911: if (*buf->buf != '\0') {
1.233 schwarze 2912: if (r->eqn == NULL)
2913: bef_pr = "\\&";
2914: bef_nl = "\n";
2915: }
2916:
2917: /*
2918: * Prepare replacing the delimiter with an equation macro
2919: * and drop leading white space from the equation.
2920: */
1.230 schwarze 2921:
1.233 schwarze 2922: if (r->eqn == NULL) {
2923: while (*cp2 == ' ')
2924: cp2++;
2925: mac = ".EQ";
2926: } else
2927: mac = ".EN";
2928:
2929: /* Handle following text, protecting whitespace. */
2930:
2931: if (*cp2 != '\0') {
2932: aft_nl = "\n";
2933: if (r->eqn != NULL)
2934: aft_pr = "\\&";
2935: }
2936:
2937: /* Do the actual replacement. */
2938:
1.238 schwarze 2939: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2940: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2941: free(buf->buf);
2942: buf->buf = cp1;
1.230 schwarze 2943:
2944: /* Toggle the in-line state of the eqn subsystem. */
2945:
2946: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2947: return ROFF_REPARSE;
1.151 kristaps 2948: }
2949:
1.235 schwarze 2950: static enum rofferr
2951: roff_EQ(ROFF_ARGS)
1.125 kristaps 2952: {
1.319 schwarze 2953: struct roff_node *n;
2954:
1.322 schwarze 2955: if (r->man->macroset == MACROSET_MAN)
2956: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 2957: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
2958: if (ln > r->man->last->line)
2959: n->flags |= NODE_LINE;
2960: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
2961: n->eqn->expectargs = UINT_MAX;
2962: roff_node_append(r->man, n);
2963: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 2964:
1.238 schwarze 2965: assert(r->eqn == NULL);
1.319 schwarze 2966: if (r->last_eqn == NULL)
2967: r->last_eqn = eqn_alloc(r->parse);
2968: else
2969: eqn_reset(r->last_eqn);
2970: r->eqn = r->last_eqn;
2971: r->eqn->node = n;
1.151 kristaps 2972:
1.238 schwarze 2973: if (buf->buf[pos] != '\0')
1.235 schwarze 2974: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2975: ".EQ %s", buf->buf + pos);
1.151 kristaps 2976:
1.277 schwarze 2977: return ROFF_IGN;
1.125 kristaps 2978: }
2979:
2980: static enum rofferr
2981: roff_EN(ROFF_ARGS)
2982: {
1.319 schwarze 2983: if (r->eqn != NULL) {
2984: eqn_parse(r->eqn);
2985: r->eqn = NULL;
2986: } else
2987: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
2988: if (buf->buf[pos] != '\0')
2989: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2990: "EN %s", buf->buf + pos);
1.277 schwarze 2991: return ROFF_IGN;
1.125 kristaps 2992: }
2993:
2994: static enum rofferr
1.109 kristaps 2995: roff_TS(ROFF_ARGS)
2996: {
1.321 schwarze 2997: if (r->tbl != NULL) {
1.221 schwarze 2998: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2999: ln, ppos, "TS breaks TS");
1.321 schwarze 3000: tbl_end(r->tbl);
1.115 kristaps 3001: }
1.321 schwarze 3002: r->tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 3003: if (r->last_tbl)
1.321 schwarze 3004: r->last_tbl->next = r->tbl;
1.113 kristaps 3005: else
1.321 schwarze 3006: r->first_tbl = r->tbl;
3007: r->last_tbl = r->tbl;
1.297 schwarze 3008: return ROFF_IGN;
3009: }
3010:
3011: static enum rofferr
3012: roff_onearg(ROFF_ARGS)
3013: {
3014: struct roff_node *n;
3015: char *cp;
1.305 schwarze 3016: int npos;
1.297 schwarze 3017:
1.302 schwarze 3018: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3019: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3020: tok == ROFF_ti))
1.302 schwarze 3021: man_breakscope(r->man, tok);
3022:
1.309 schwarze 3023: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3024: r->man->last = roffce_node;
3025: r->man->next = ROFF_NEXT_SIBLING;
3026: }
3027:
1.297 schwarze 3028: roff_elem_alloc(r->man, ln, ppos, tok);
3029: n = r->man->last;
3030:
3031: cp = buf->buf + pos;
3032: if (*cp != '\0') {
3033: while (*cp != '\0' && *cp != ' ')
3034: cp++;
3035: while (*cp == ' ')
3036: *cp++ = '\0';
3037: if (*cp != '\0')
3038: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
3039: r->parse, ln, cp - buf->buf,
3040: "%s ... %s", roff_name[tok], cp);
3041: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3042: }
3043:
1.309 schwarze 3044: if (tok == ROFF_ce || tok == ROFF_rj) {
3045: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3046: roff_word_alloc(r->man, ln, pos, "1");
3047: r->man->last->flags |= NODE_NOSRC;
3048: }
3049: npos = 0;
3050: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3051: &roffce_lines, 0) == 0) {
3052: mandoc_vmsg(MANDOCERR_CE_NONUM,
3053: r->parse, ln, pos, "ce %s", buf->buf + pos);
3054: roffce_lines = 1;
3055: }
3056: if (roffce_lines < 1) {
3057: r->man->last = r->man->last->parent;
3058: roffce_node = NULL;
3059: roffce_lines = 0;
3060: } else
3061: roffce_node = r->man->last->parent;
3062: } else {
3063: n->flags |= NODE_VALID | NODE_ENDED;
3064: r->man->last = n;
3065: }
3066: n->flags |= NODE_LINE;
1.300 schwarze 3067: r->man->next = ROFF_NEXT_SIBLING;
3068: return ROFF_IGN;
3069: }
3070:
3071: static enum rofferr
3072: roff_manyarg(ROFF_ARGS)
3073: {
3074: struct roff_node *n;
3075: char *sp, *ep;
3076:
3077: roff_elem_alloc(r->man, ln, ppos, tok);
3078: n = r->man->last;
3079:
3080: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3081: while (*ep != '\0' && *ep != ' ')
3082: ep++;
3083: while (*ep == ' ')
3084: *ep++ = '\0';
3085: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3086: }
3087:
3088: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3089: r->man->last = n;
3090: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3091: return ROFF_IGN;
1.251 schwarze 3092: }
3093:
3094: static enum rofferr
1.311 schwarze 3095: roff_als(ROFF_ARGS)
3096: {
3097: char *oldn, *newn, *end, *value;
3098: size_t oldsz, newsz, valsz;
3099:
3100: newn = oldn = buf->buf + pos;
3101: if (*newn == '\0')
3102: return ROFF_IGN;
3103:
3104: newsz = roff_getname(r, &oldn, ln, pos);
3105: if (newn[newsz] == '\\' || *oldn == '\0')
3106: return ROFF_IGN;
3107:
3108: end = oldn;
3109: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3110: if (oldsz == 0)
3111: return ROFF_IGN;
3112:
1.315 schwarze 3113: valsz = mandoc_asprintf(&value, ".%.*s \\$*\\\"\n",
3114: (int)oldsz, oldn);
1.311 schwarze 3115: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3116: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3117: free(value);
3118: return ROFF_IGN;
3119: }
3120:
3121: static enum rofferr
1.296 schwarze 3122: roff_br(ROFF_ARGS)
1.251 schwarze 3123: {
1.302 schwarze 3124: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3125: man_breakscope(r->man, ROFF_br);
1.296 schwarze 3126: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3127: if (buf->buf[pos] != '\0')
3128: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3129: "%s %s", roff_name[tok], buf->buf + pos);
3130: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3131: r->man->next = ROFF_NEXT_SIBLING;
3132: return ROFF_IGN;
1.92 schwarze 3133: }
3134:
1.105 kristaps 3135: static enum rofferr
1.174 kristaps 3136: roff_cc(ROFF_ARGS)
3137: {
3138: const char *p;
3139:
1.238 schwarze 3140: p = buf->buf + pos;
1.174 kristaps 3141:
1.238 schwarze 3142: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3143: r->control = '\0';
1.174 kristaps 3144:
1.238 schwarze 3145: if (*p != '\0')
1.260 schwarze 3146: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3147: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3148:
1.277 schwarze 3149: return ROFF_IGN;
1.174 kristaps 3150: }
3151:
3152: static enum rofferr
1.303 schwarze 3153: roff_ec(ROFF_ARGS)
3154: {
3155: const char *p;
3156:
3157: p = buf->buf + pos;
3158: if (*p == '\0')
3159: r->escape = '\\';
3160: else {
3161: r->escape = *p;
3162: if (*++p != '\0')
3163: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3164: ln, p - buf->buf, "ec ... %s", p);
3165: }
3166: return ROFF_IGN;
3167: }
3168:
3169: static enum rofferr
3170: roff_eo(ROFF_ARGS)
3171: {
3172: r->escape = '\0';
3173: if (buf->buf[pos] != '\0')
3174: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3175: ln, pos, "eo %s", buf->buf + pos);
3176: return ROFF_IGN;
1.330 schwarze 3177: }
3178:
3179: static enum rofferr
3180: roff_nop(ROFF_ARGS)
3181: {
3182: while (buf->buf[pos] == ' ')
3183: pos++;
3184: *offs = pos;
3185: return ROFF_RERUN;
1.303 schwarze 3186: }
3187:
3188: static enum rofferr
1.164 kristaps 3189: roff_tr(ROFF_ARGS)
3190: {
3191: const char *p, *first, *second;
3192: size_t fsz, ssz;
3193: enum mandoc_esc esc;
3194:
1.238 schwarze 3195: p = buf->buf + pos;
1.164 kristaps 3196:
1.238 schwarze 3197: if (*p == '\0') {
1.260 schwarze 3198: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 3199: return ROFF_IGN;
1.164 kristaps 3200: }
3201:
1.238 schwarze 3202: while (*p != '\0') {
1.164 kristaps 3203: fsz = ssz = 1;
3204:
3205: first = p++;
1.238 schwarze 3206: if (*first == '\\') {
1.164 kristaps 3207: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3208: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3209: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3210: ln, (int)(p - buf->buf), first);
1.277 schwarze 3211: return ROFF_IGN;
1.164 kristaps 3212: }
3213: fsz = (size_t)(p - first);
3214: }
3215:
3216: second = p++;
1.238 schwarze 3217: if (*second == '\\') {
1.164 kristaps 3218: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3219: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3220: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3221: ln, (int)(p - buf->buf), second);
1.277 schwarze 3222: return ROFF_IGN;
1.164 kristaps 3223: }
3224: ssz = (size_t)(p - second);
1.238 schwarze 3225: } else if (*second == '\0') {
1.260 schwarze 3226: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3227: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3228: second = " ";
1.165 kristaps 3229: p--;
1.164 kristaps 3230: }
3231:
1.167 kristaps 3232: if (fsz > 1) {
1.207 schwarze 3233: roff_setstrn(&r->xmbtab, first, fsz,
3234: second, ssz, 0);
1.167 kristaps 3235: continue;
3236: }
3237:
1.238 schwarze 3238: if (r->xtab == NULL)
1.207 schwarze 3239: r->xtab = mandoc_calloc(128,
3240: sizeof(struct roffstr));
1.167 kristaps 3241:
3242: free(r->xtab[(int)*first].p);
3243: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3244: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3245: }
3246:
1.277 schwarze 3247: return ROFF_IGN;
1.164 kristaps 3248: }
3249:
3250: static enum rofferr
1.306 schwarze 3251: roff_rn(ROFF_ARGS)
3252: {
3253: const char *value;
3254: char *oldn, *newn, *end;
3255: size_t oldsz, newsz;
1.315 schwarze 3256: int deftype;
1.306 schwarze 3257:
3258: oldn = newn = buf->buf + pos;
3259: if (*oldn == '\0')
3260: return ROFF_IGN;
3261:
3262: oldsz = roff_getname(r, &newn, ln, pos);
3263: if (oldn[oldsz] == '\\' || *newn == '\0')
3264: return ROFF_IGN;
3265:
3266: end = newn;
3267: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3268: if (newsz == 0)
3269: return ROFF_IGN;
3270:
1.315 schwarze 3271: deftype = ROFFDEF_ANY;
3272: value = roff_getstrn(r, oldn, oldsz, &deftype);
3273: switch (deftype) {
3274: case ROFFDEF_USER:
1.306 schwarze 3275: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3276: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3277: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3278: break;
3279: case ROFFDEF_PRE:
3280: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3281: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3282: break;
3283: case ROFFDEF_REN:
1.306 schwarze 3284: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3285: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3286: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3287: break;
3288: case ROFFDEF_STD:
1.306 schwarze 3289: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3290: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3291: break;
3292: default:
3293: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3294: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3295: break;
3296: }
1.306 schwarze 3297: return ROFF_IGN;
3298: }
3299:
3300: static enum rofferr
1.105 kristaps 3301: roff_so(ROFF_ARGS)
3302: {
1.249 schwarze 3303: char *name, *cp;
1.105 kristaps 3304:
1.238 schwarze 3305: name = buf->buf + pos;
1.224 schwarze 3306: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3307:
3308: /*
3309: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3310: * opening anything that's not in our cwd or anything beneath
3311: * it. Thus, explicitly disallow traversing up the file-system
3312: * or using absolute paths.
3313: */
3314:
1.238 schwarze 3315: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3316: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3317: ".so %s", name);
1.249 schwarze 3318: buf->sz = mandoc_asprintf(&cp,
3319: ".sp\nSee the file %s.\n.sp", name) + 1;
3320: free(buf->buf);
3321: buf->buf = cp;
3322: *offs = 0;
1.277 schwarze 3323: return ROFF_REPARSE;
1.105 kristaps 3324: }
3325:
3326: *offs = pos;
1.277 schwarze 3327: return ROFF_SO;
1.105 kristaps 3328: }
1.92 schwarze 3329:
1.266 schwarze 3330: /* --- user defined strings and macros ------------------------------------ */
3331:
1.106 kristaps 3332: static enum rofferr
3333: roff_userdef(ROFF_ARGS)
1.99 kristaps 3334: {
1.311 schwarze 3335: const char *arg[16], *ap;
1.106 kristaps 3336: char *cp, *n1, *n2;
1.292 schwarze 3337: int expand_count, i, ib, ie;
1.263 schwarze 3338: size_t asz, rsz;
1.106 kristaps 3339:
3340: /*
3341: * Collect pointers to macro argument strings
1.188 schwarze 3342: * and NUL-terminate them.
1.106 kristaps 3343: */
1.263 schwarze 3344:
1.273 schwarze 3345: r->argc = 0;
1.238 schwarze 3346: cp = buf->buf + pos;
1.311 schwarze 3347: for (i = 0; i < 16; i++) {
1.273 schwarze 3348: if (*cp == '\0')
3349: arg[i] = "";
3350: else {
3351: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3352: r->argc = i + 1;
3353: }
3354: }
1.99 kristaps 3355:
1.106 kristaps 3356: /*
3357: * Expand macro arguments.
1.99 kristaps 3358: */
1.263 schwarze 3359:
3360: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 3361: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 3362: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 3363: expand_count = 0;
1.263 schwarze 3364: while (*cp != '\0') {
3365:
3366: /* Scan ahead for the next argument invocation. */
3367:
3368: if (*cp++ != '\\')
3369: continue;
3370: if (*cp++ != '$')
3371: continue;
1.274 schwarze 3372: if (*cp == '*') { /* \\$* inserts all arguments */
3373: ib = 0;
3374: ie = r->argc - 1;
3375: } else { /* \\$1 .. \\$9 insert one argument */
3376: ib = ie = *cp - '1';
3377: if (ib < 0 || ib > 8)
3378: continue;
3379: }
1.263 schwarze 3380: cp -= 2;
1.292 schwarze 3381:
3382: /*
3383: * Prevent infinite recursion.
3384: */
3385:
3386: if (cp >= n2)
3387: expand_count = 1;
3388: else if (++expand_count > EXPAND_LIMIT) {
3389: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3390: ln, (int)(cp - n1), NULL);
1.293 schwarze 3391: free(buf->buf);
3392: buf->buf = n1;
1.329 schwarze 3393: *offs = 0;
1.292 schwarze 3394: return ROFF_IGN;
3395: }
1.263 schwarze 3396:
3397: /*
3398: * Determine the size of the expanded argument,
3399: * taking escaping of quotes into account.
3400: */
3401:
1.274 schwarze 3402: asz = ie > ib ? ie - ib : 0; /* for blanks */
3403: for (i = ib; i <= ie; i++) {
3404: for (ap = arg[i]; *ap != '\0'; ap++) {
3405: asz++;
3406: if (*ap == '"')
3407: asz += 3;
3408: }
1.263 schwarze 3409: }
3410: if (asz != 3) {
3411:
3412: /*
3413: * Determine the size of the rest of the
3414: * unexpanded macro, including the NUL.
3415: */
3416:
3417: rsz = buf->sz - (cp - n1) - 3;
3418:
3419: /*
3420: * When shrinking, move before
3421: * releasing the storage.
3422: */
3423:
3424: if (asz < 3)
3425: memmove(cp + asz, cp + 3, rsz);
3426:
3427: /*
3428: * Resize the storage for the macro
3429: * and readjust the parse pointer.
3430: */
3431:
3432: buf->sz += asz - 3;
3433: n2 = mandoc_realloc(n1, buf->sz);
3434: cp = n2 + (cp - n1);
3435: n1 = n2;
3436:
3437: /*
3438: * When growing, make room
3439: * for the expanded argument.
3440: */
3441:
3442: if (asz > 3)
3443: memmove(cp + asz, cp + 3, rsz);
3444: }
3445:
3446: /* Copy the expanded argument, escaping quotes. */
3447:
3448: n2 = cp;
1.274 schwarze 3449: for (i = ib; i <= ie; i++) {
3450: for (ap = arg[i]; *ap != '\0'; ap++) {
3451: if (*ap == '"') {
3452: memcpy(n2, "\\(dq", 4);
3453: n2 += 4;
3454: } else
3455: *n2++ = *ap;
3456: }
3457: if (i < ie)
3458: *n2++ = ' ';
1.106 kristaps 3459: }
1.99 kristaps 3460: }
3461:
1.106 kristaps 3462: /*
3463: * Replace the macro invocation
3464: * by the expanded macro.
3465: */
1.263 schwarze 3466:
1.238 schwarze 3467: free(buf->buf);
3468: buf->buf = n1;
1.248 schwarze 3469: *offs = 0;
1.106 kristaps 3470:
1.277 schwarze 3471: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3472: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3473: }
1.121 schwarze 3474:
1.306 schwarze 3475: /*
3476: * Calling a high-level macro that was renamed with .rn.
3477: * r->current_string has already been set up by roff_parse().
3478: */
3479: static enum rofferr
3480: roff_renamed(ROFF_ARGS)
3481: {
3482: char *nbuf;
3483:
1.315 schwarze 3484: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3485: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3486: free(buf->buf);
3487: buf->buf = nbuf;
1.329 schwarze 3488: *offs = 0;
1.306 schwarze 3489: return ROFF_CONT;
3490: }
3491:
1.212 schwarze 3492: static size_t
1.121 schwarze 3493: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3494: {
3495: char *name, *cp;
1.212 schwarze 3496: size_t namesz;
1.121 schwarze 3497:
3498: name = *cpp;
3499: if ('\0' == *name)
1.277 schwarze 3500: return 0;
1.121 schwarze 3501:
1.212 schwarze 3502: /* Read until end of name and terminate it with NUL. */
3503: for (cp = name; 1; cp++) {
3504: if ('\0' == *cp || ' ' == *cp) {
3505: namesz = cp - name;
3506: break;
3507: }
1.121 schwarze 3508: if ('\\' != *cp)
3509: continue;
1.215 schwarze 3510: namesz = cp - name;
3511: if ('{' == cp[1] || '}' == cp[1])
3512: break;
1.121 schwarze 3513: cp++;
3514: if ('\\' == *cp)
3515: continue;
1.224 schwarze 3516: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3517: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3518: mandoc_escape((const char **)&cp, NULL, NULL);
3519: break;
1.121 schwarze 3520: }
3521:
3522: /* Read past spaces. */
3523: while (' ' == *cp)
3524: cp++;
3525:
3526: *cpp = cp;
1.277 schwarze 3527: return namesz;
1.121 schwarze 3528: }
3529:
1.106 kristaps 3530: /*
3531: * Store *string into the user-defined string called *name.
3532: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3533: * append == 0: replace mode
3534: * append == 1: single-line append mode
3535: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3536: */
1.94 kristaps 3537: static void
1.106 kristaps 3538: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3539: int append)
1.92 schwarze 3540: {
1.315 schwarze 3541: size_t namesz;
1.164 kristaps 3542:
1.315 schwarze 3543: namesz = strlen(name);
3544: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 3545: string ? strlen(string) : 0, append);
1.315 schwarze 3546: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 3547: }
3548:
3549: static void
1.166 kristaps 3550: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3551: const char *string, size_t stringsz, int append)
1.164 kristaps 3552: {
1.166 kristaps 3553: struct roffkv *n;
1.164 kristaps 3554: char *c;
3555: int i;
3556: size_t oldch, newch;
1.92 schwarze 3557:
1.106 kristaps 3558: /* Search for an existing string with the same name. */
1.164 kristaps 3559: n = *r;
3560:
1.211 schwarze 3561: while (n && (namesz != n->key.sz ||
3562: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3563: n = n->next;
1.94 kristaps 3564:
3565: if (NULL == n) {
1.106 kristaps 3566: /* Create a new string table entry. */
1.166 kristaps 3567: n = mandoc_malloc(sizeof(struct roffkv));
3568: n->key.p = mandoc_strndup(name, namesz);
3569: n->key.sz = namesz;
3570: n->val.p = NULL;
3571: n->val.sz = 0;
1.164 kristaps 3572: n->next = *r;
3573: *r = n;
1.193 schwarze 3574: } else if (0 == append) {
1.166 kristaps 3575: free(n->val.p);
3576: n->val.p = NULL;
3577: n->val.sz = 0;
1.106 kristaps 3578: }
3579:
3580: if (NULL == string)
3581: return;
3582:
3583: /*
3584: * One additional byte for the '\n' in multiline mode,
3585: * and one for the terminating '\0'.
3586: */
1.193 schwarze 3587: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3588:
1.166 kristaps 3589: if (NULL == n->val.p) {
3590: n->val.p = mandoc_malloc(newch);
3591: *n->val.p = '\0';
1.106 kristaps 3592: oldch = 0;
3593: } else {
1.166 kristaps 3594: oldch = n->val.sz;
3595: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3596: }
3597:
3598: /* Skip existing content in the destination buffer. */
1.166 kristaps 3599: c = n->val.p + (int)oldch;
1.106 kristaps 3600:
3601: /* Append new content to the destination buffer. */
1.164 kristaps 3602: i = 0;
3603: while (i < (int)stringsz) {
1.106 kristaps 3604: /*
3605: * Rudimentary roff copy mode:
3606: * Handle escaped backslashes.
3607: */
1.164 kristaps 3608: if ('\\' == string[i] && '\\' == string[i + 1])
3609: i++;
3610: *c++ = string[i++];
1.106 kristaps 3611: }
1.94 kristaps 3612:
1.106 kristaps 3613: /* Append terminating bytes. */
1.193 schwarze 3614: if (1 < append)
1.106 kristaps 3615: *c++ = '\n';
1.163 kristaps 3616:
1.106 kristaps 3617: *c = '\0';
1.166 kristaps 3618: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3619: }
3620:
1.94 kristaps 3621: static const char *
1.325 schwarze 3622: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 3623: int *deftype)
1.92 schwarze 3624: {
1.315 schwarze 3625: const struct roffkv *n;
1.325 schwarze 3626: int found, i;
1.315 schwarze 3627: enum roff_tok tok;
3628:
1.325 schwarze 3629: found = 0;
3630: for (n = r->strtab; n != NULL; n = n->next) {
3631: if (strncmp(name, n->key.p, len) != 0 ||
3632: n->key.p[len] != '\0' || n->val.p == NULL)
3633: continue;
3634: if (*deftype & ROFFDEF_USER) {
3635: *deftype = ROFFDEF_USER;
3636: return n->val.p;
3637: } else {
3638: found = 1;
3639: break;
3640: }
3641: }
3642: for (n = r->rentab; n != NULL; n = n->next) {
3643: if (strncmp(name, n->key.p, len) != 0 ||
3644: n->key.p[len] != '\0' || n->val.p == NULL)
3645: continue;
3646: if (*deftype & ROFFDEF_REN) {
3647: *deftype = ROFFDEF_REN;
3648: return n->val.p;
3649: } else {
3650: found = 1;
3651: break;
1.315 schwarze 3652: }
3653: }
1.325 schwarze 3654: for (i = 0; i < PREDEFS_MAX; i++) {
3655: if (strncmp(name, predefs[i].name, len) != 0 ||
3656: predefs[i].name[len] != '\0')
3657: continue;
3658: if (*deftype & ROFFDEF_PRE) {
3659: *deftype = ROFFDEF_PRE;
3660: return predefs[i].str;
3661: } else {
3662: found = 1;
3663: break;
1.315 schwarze 3664: }
3665: }
1.325 schwarze 3666: if (r->man->macroset != MACROSET_MAN) {
3667: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3668: if (strncmp(name, roff_name[tok], len) != 0 ||
3669: roff_name[tok][len] != '\0')
3670: continue;
3671: if (*deftype & ROFFDEF_STD) {
3672: *deftype = ROFFDEF_STD;
3673: return NULL;
3674: } else {
3675: found = 1;
3676: break;
1.315 schwarze 3677: }
3678: }
3679: }
1.325 schwarze 3680: if (r->man->macroset != MACROSET_MDOC) {
3681: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3682: if (strncmp(name, roff_name[tok], len) != 0 ||
3683: roff_name[tok][len] != '\0')
3684: continue;
3685: if (*deftype & ROFFDEF_STD) {
3686: *deftype = ROFFDEF_STD;
3687: return NULL;
3688: } else {
3689: found = 1;
3690: break;
1.315 schwarze 3691: }
3692: }
1.325 schwarze 3693: }
3694:
3695: if (found == 0 && *deftype != ROFFDEF_ANY) {
3696: if (*deftype & ROFFDEF_REN) {
3697: /*
3698: * This might still be a request,
3699: * so do not treat it as undefined yet.
3700: */
3701: *deftype = ROFFDEF_UNDEF;
3702: return NULL;
1.315 schwarze 3703: }
1.325 schwarze 3704:
3705: /* Using an undefined string defines it to be empty. */
3706:
3707: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3708: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 3709: }
1.325 schwarze 3710:
1.315 schwarze 3711: *deftype = 0;
1.277 schwarze 3712: return NULL;
1.92 schwarze 3713: }
3714:
1.94 kristaps 3715: static void
1.167 kristaps 3716: roff_freestr(struct roffkv *r)
1.92 schwarze 3717: {
1.166 kristaps 3718: struct roffkv *n, *nn;
1.92 schwarze 3719:
1.167 kristaps 3720: for (n = r; n; n = nn) {
1.166 kristaps 3721: free(n->key.p);
3722: free(n->val.p);
1.92 schwarze 3723: nn = n->next;
3724: free(n);
3725: }
1.114 kristaps 3726: }
1.266 schwarze 3727:
3728: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 3729:
3730: /*
3731: * Duplicate an input string, making the appropriate character
3732: * conversations (as stipulated by `tr') along the way.
3733: * Returns a heap-allocated string with all the replacements made.
3734: */
3735: char *
3736: roff_strdup(const struct roff *r, const char *p)
3737: {
1.166 kristaps 3738: const struct roffkv *cp;
1.164 kristaps 3739: char *res;
3740: const char *pp;
3741: size_t ssz, sz;
3742: enum mandoc_esc esc;
3743:
1.167 kristaps 3744: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3745: return mandoc_strdup(p);
1.164 kristaps 3746: else if ('\0' == *p)
1.277 schwarze 3747: return mandoc_strdup("");
1.164 kristaps 3748:
3749: /*
3750: * Step through each character looking for term matches
3751: * (remember that a `tr' can be invoked with an escape, which is
3752: * a glyph but the escape is multi-character).
3753: * We only do this if the character hash has been initialised
3754: * and the string is >0 length.
3755: */
3756:
3757: res = NULL;
3758: ssz = 0;
3759:
3760: while ('\0' != *p) {
1.289 schwarze 3761: assert((unsigned int)*p < 128);
3762: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3763: sz = r->xtab[(int)*p].sz;
3764: res = mandoc_realloc(res, ssz + sz + 1);
3765: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3766: ssz += sz;
3767: p++;
3768: continue;
3769: } else if ('\\' != *p) {
3770: res = mandoc_realloc(res, ssz + 2);
3771: res[ssz++] = *p++;
3772: continue;
3773: }
3774:
1.164 kristaps 3775: /* Search for term matches. */
1.167 kristaps 3776: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3777: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3778: break;
3779:
3780: if (NULL != cp) {
3781: /*
3782: * A match has been found.
3783: * Append the match to the array and move
3784: * forward by its keysize.
3785: */
1.207 schwarze 3786: res = mandoc_realloc(res,
3787: ssz + cp->val.sz + 1);
1.166 kristaps 3788: memcpy(res + ssz, cp->val.p, cp->val.sz);
3789: ssz += cp->val.sz;
3790: p += (int)cp->key.sz;
1.164 kristaps 3791: continue;
3792: }
3793:
1.167 kristaps 3794: /*
3795: * Handle escapes carefully: we need to copy
3796: * over just the escape itself, or else we might
3797: * do replacements within the escape itself.
3798: * Make sure to pass along the bogus string.
3799: */
3800: pp = p++;
3801: esc = mandoc_escape(&p, NULL, NULL);
3802: if (ESCAPE_ERROR == esc) {
3803: sz = strlen(pp);
1.164 kristaps 3804: res = mandoc_realloc(res, ssz + sz + 1);
3805: memcpy(res + ssz, pp, sz);
1.167 kristaps 3806: break;
1.164 kristaps 3807: }
1.207 schwarze 3808: /*
3809: * We bail out on bad escapes.
1.167 kristaps 3810: * No need to warn: we already did so when
3811: * roff_res() was called.
3812: */
3813: sz = (int)(p - pp);
3814: res = mandoc_realloc(res, ssz + sz + 1);
3815: memcpy(res + ssz, pp, sz);
3816: ssz += sz;
1.164 kristaps 3817: }
3818:
3819: res[(int)ssz] = '\0';
1.277 schwarze 3820: return res;
1.227 schwarze 3821: }
3822:
3823: int
3824: roff_getformat(const struct roff *r)
3825: {
3826:
1.277 schwarze 3827: return r->format;
1.174 kristaps 3828: }
3829:
3830: /*
1.207 schwarze 3831: * Find out whether a line is a macro line or not.
1.174 kristaps 3832: * If it is, adjust the current position and return one; if it isn't,
3833: * return zero and don't change the current position.
3834: * If the control character has been set with `.cc', then let that grain
3835: * precedence.
3836: * This is slighly contrary to groff, where using the non-breaking
3837: * control character when `cc' has been invoked will cause the
3838: * non-breaking macro contents to be printed verbatim.
3839: */
3840: int
3841: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3842: {
3843: int pos;
3844:
3845: pos = *ppos;
3846:
1.303 schwarze 3847: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 3848: pos++;
1.303 schwarze 3849: else if (r->control != '\0')
1.277 schwarze 3850: return 0;
1.174 kristaps 3851: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3852: pos += 2;
3853: else if ('.' == cp[pos] || '\'' == cp[pos])
3854: pos++;
3855: else
1.277 schwarze 3856: return 0;
1.174 kristaps 3857:
3858: while (' ' == cp[pos] || '\t' == cp[pos])
3859: pos++;
3860:
3861: *ppos = pos;
1.277 schwarze 3862: return 1;
1.74 kristaps 3863: }
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