Annotation of src/usr.bin/mandoc/roff.c, Revision 1.213
1.213 ! schwarze 1: /* $OpenBSD: roff.c,v 1.212 2018/08/24 22:56:37 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.197 schwarze 4: * Copyright (c) 2010-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.167 schwarze 23: #include <stddef.h>
24: #include <stdint.h>
1.51 schwarze 25: #include <stdio.h>
1.1 schwarze 26: #include <stdlib.h>
27: #include <string.h>
28:
29: #include "mandoc.h"
1.74 schwarze 30: #include "mandoc_aux.h"
1.167 schwarze 31: #include "mandoc_ohash.h"
1.137 schwarze 32: #include "roff.h"
1.98 daniel 33: #include "libmandoc.h"
1.138 schwarze 34: #include "roff_int.h"
1.27 schwarze 35: #include "libroff.h"
1.2 schwarze 36:
1.43 schwarze 37: /* Maximum number of string expansions per line, to break infinite loops. */
38: #define EXPAND_LIMIT 1000
39:
1.187 schwarze 40: /* Types of definitions of macros and strings. */
41: #define ROFFDEF_USER (1 << 1) /* User-defined. */
42: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
43: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
44: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
45: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
46: ROFFDEF_REN | ROFFDEF_STD)
1.197 schwarze 47: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.187 schwarze 48:
1.138 schwarze 49: /* --- data types --------------------------------------------------------- */
50:
1.41 schwarze 51: /*
1.42 schwarze 52: * An incredibly-simple string buffer.
53: */
1.8 schwarze 54: struct roffstr {
1.42 schwarze 55: char *p; /* nil-terminated buffer */
56: size_t sz; /* saved strlen(p) */
57: };
58:
59: /*
60: * A key-value roffstr pair as part of a singly-linked list.
61: */
62: struct roffkv {
63: struct roffstr key;
64: struct roffstr val;
65: struct roffkv *next; /* next in list */
1.8 schwarze 66: };
67:
1.52 schwarze 68: /*
69: * A single number register as part of a singly-linked list.
70: */
71: struct roffreg {
72: struct roffstr key;
1.53 schwarze 73: int val;
1.199 schwarze 74: int step;
1.52 schwarze 75: struct roffreg *next;
76: };
77:
1.167 schwarze 78: /*
79: * Association of request and macro names with token IDs.
80: */
81: struct roffreq {
82: enum roff_tok tok;
83: char name[];
84: };
85:
1.211 schwarze 86: /*
87: * A macro processing context.
88: * More than one is needed when macro calls are nested.
89: */
90: struct mctx {
91: char **argv;
92: int argc;
93: int argsz;
94: };
95:
1.1 schwarze 96: struct roff {
1.35 schwarze 97: struct mparse *parse; /* parse point */
1.168 schwarze 98: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 99: struct roffnode *last; /* leaf of stack */
1.211 schwarze 100: struct mctx *mstack; /* stack of macro contexts */
1.96 schwarze 101: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 102: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 103: struct roffreg *regtab; /* number registers */
1.42 schwarze 104: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 105: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 106: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
107: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 108: const char *current_string; /* value of last called user macro */
1.27 schwarze 109: struct tbl_node *first_tbl; /* first table parsed */
110: struct tbl_node *last_tbl; /* last table parsed */
111: struct tbl_node *tbl; /* current table being parsed */
1.191 schwarze 112: struct eqn_node *last_eqn; /* equation parser */
113: struct eqn_node *eqn; /* active equation parser */
1.102 schwarze 114: int eqn_inline; /* current equation is inline */
1.96 schwarze 115: int options; /* parse options */
1.211 schwarze 116: int mstacksz; /* current size of mstack */
117: int mstackpos; /* position in mstack */
1.96 schwarze 118: int rstacksz; /* current size limit of rstack */
119: int rstackpos; /* position in rstack */
1.99 schwarze 120: int format; /* current file in mdoc or man format */
1.96 schwarze 121: char control; /* control character */
1.175 schwarze 122: char escape; /* escape character */
1.1 schwarze 123: };
124:
125: struct roffnode {
1.166 schwarze 126: enum roff_tok tok; /* type of node */
1.1 schwarze 127: struct roffnode *parent; /* up one in stack */
128: int line; /* parse line */
129: int col; /* parse col */
1.16 schwarze 130: char *name; /* node name, e.g. macro name */
1.2 schwarze 131: char *end; /* end-rules: custom token */
132: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 133: int rule; /* current evaluation rule */
1.1 schwarze 134: };
135:
136: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 137: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 138: struct buf *buf, /* input buffer */ \
1.1 schwarze 139: int ln, /* parse line */ \
1.2 schwarze 140: int ppos, /* original pos in buffer */ \
141: int pos, /* current pos in buffer */ \
142: int *offs /* reset offset of buffer data */
1.1 schwarze 143:
1.212 schwarze 144: typedef int (*roffproc)(ROFF_ARGS);
1.1 schwarze 145:
146: struct roffmac {
1.2 schwarze 147: roffproc proc; /* process new macro */
148: roffproc text; /* process as child text of macro */
149: roffproc sub; /* process as child of macro */
150: int flags;
151: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 152: };
153:
1.37 schwarze 154: struct predef {
155: const char *name; /* predefined input name */
156: const char *str; /* replacement symbol */
157: };
158:
159: #define PREDEF(__name, __str) \
160: { (__name), (__str) },
161:
1.138 schwarze 162: /* --- function prototypes ------------------------------------------------ */
163:
1.212 schwarze 164: static int roffnode_cleanscope(struct roff *);
165: static int roffnode_pop(struct roff *);
1.166 schwarze 166: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 167: const char *, int, int);
1.193 schwarze 168: static void roff_addtbl(struct roff_man *, struct tbl_node *);
1.212 schwarze 169: static int roff_als(ROFF_ARGS);
170: static int roff_block(ROFF_ARGS);
171: static int roff_block_text(ROFF_ARGS);
172: static int roff_block_sub(ROFF_ARGS);
173: static int roff_br(ROFF_ARGS);
174: static int roff_cblock(ROFF_ARGS);
175: static int roff_cc(ROFF_ARGS);
176: static int roff_ccond(struct roff *, int, int);
1.213 ! schwarze 177: static int roff_char(ROFF_ARGS);
1.212 schwarze 178: static int roff_cond(ROFF_ARGS);
179: static int roff_cond_text(ROFF_ARGS);
180: static int roff_cond_sub(ROFF_ARGS);
181: static int roff_ds(ROFF_ARGS);
182: static int roff_ec(ROFF_ARGS);
183: static int roff_eo(ROFF_ARGS);
184: static int roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 185: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 186: static int roff_evalnum(struct roff *, int,
187: const char *, int *, int *, int);
188: static int roff_evalpar(struct roff *, int,
1.133 schwarze 189: const char *, int *, int *, int);
1.71 schwarze 190: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 191: static void roff_free1(struct roff *);
1.52 schwarze 192: static void roff_freereg(struct roffreg *);
1.42 schwarze 193: static void roff_freestr(struct roffkv *);
1.85 schwarze 194: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 195: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 196: static int roff_getop(const char *, int *, char *);
1.199 schwarze 197: static int roff_getregn(struct roff *,
198: const char *, size_t, char);
1.145 schwarze 199: static int roff_getregro(const struct roff *,
200: const char *name);
1.197 schwarze 201: static const char *roff_getstrn(struct roff *,
1.187 schwarze 202: const char *, size_t, int *);
1.143 schwarze 203: static int roff_hasregn(const struct roff *,
204: const char *, size_t);
1.212 schwarze 205: static int roff_insec(ROFF_ARGS);
206: static int roff_it(ROFF_ARGS);
207: static int roff_line_ignore(ROFF_ARGS);
1.137 schwarze 208: static void roff_man_alloc1(struct roff_man *);
209: static void roff_man_free1(struct roff_man *);
1.212 schwarze 210: static int roff_manyarg(ROFF_ARGS);
211: static int roff_nop(ROFF_ARGS);
212: static int roff_nr(ROFF_ARGS);
213: static int roff_onearg(ROFF_ARGS);
1.166 schwarze 214: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 215: int, int);
1.212 schwarze 216: static int roff_parsetext(struct roff *, struct buf *,
1.177 schwarze 217: int, int *);
1.212 schwarze 218: static int roff_renamed(ROFF_ARGS);
219: static int roff_res(struct roff *, struct buf *, int, int);
220: static int roff_return(ROFF_ARGS);
221: static int roff_rm(ROFF_ARGS);
222: static int roff_rn(ROFF_ARGS);
223: static int roff_rr(ROFF_ARGS);
1.198 schwarze 224: static void roff_setregn(struct roff *, const char *,
1.199 schwarze 225: size_t, int, char, int);
1.8 schwarze 226: static void roff_setstr(struct roff *,
1.16 schwarze 227: const char *, const char *, int);
1.80 schwarze 228: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 229: size_t, const char *, size_t, int);
1.212 schwarze 230: static int roff_shift(ROFF_ARGS);
231: static int roff_so(ROFF_ARGS);
232: static int roff_tr(ROFF_ARGS);
233: static int roff_Dd(ROFF_ARGS);
234: static int roff_TE(ROFF_ARGS);
235: static int roff_TS(ROFF_ARGS);
236: static int roff_EQ(ROFF_ARGS);
237: static int roff_EN(ROFF_ARGS);
238: static int roff_T_(ROFF_ARGS);
239: static int roff_unsupp(ROFF_ARGS);
240: static int roff_userdef(ROFF_ARGS);
1.1 schwarze 241:
1.138 schwarze 242: /* --- constant data ------------------------------------------------------ */
243:
1.133 schwarze 244: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
245: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
246:
1.166 schwarze 247: const char *__roff_name[MAN_MAX + 1] = {
1.177 schwarze 248: "br", "ce", "ft", "ll",
1.184 schwarze 249: "mc", "po", "rj", "sp",
250: "ta", "ti", NULL,
1.166 schwarze 251: "ab", "ad", "af", "aln",
252: "als", "am", "am1", "ami",
253: "ami1", "as", "as1", "asciify",
254: "backtrace", "bd", "bleedat", "blm",
255: "box", "boxa", "bp", "BP",
256: "break", "breakchar", "brnl", "brp",
1.177 schwarze 257: "brpnl", "c2", "cc",
1.166 schwarze 258: "cf", "cflags", "ch", "char",
259: "chop", "class", "close", "CL",
260: "color", "composite", "continue", "cp",
261: "cropat", "cs", "cu", "da",
262: "dch", "Dd", "de", "de1",
263: "defcolor", "dei", "dei1", "device",
264: "devicem", "di", "do", "ds",
265: "ds1", "dwh", "dt", "ec",
266: "ecr", "ecs", "el", "em",
267: "EN", "eo", "EP", "EQ",
268: "errprint", "ev", "evc", "ex",
269: "fallback", "fam", "fc", "fchar",
270: "fcolor", "fdeferlig", "feature", "fkern",
271: "fl", "flig", "fp", "fps",
272: "fschar", "fspacewidth", "fspecial", "ftr",
273: "fzoom", "gcolor", "hc", "hcode",
274: "hidechar", "hla", "hlm", "hpf",
275: "hpfa", "hpfcode", "hw", "hy",
276: "hylang", "hylen", "hym", "hypp",
277: "hys", "ie", "if", "ig",
278: "index", "it", "itc", "IX",
279: "kern", "kernafter", "kernbefore", "kernpair",
280: "lc", "lc_ctype", "lds", "length",
281: "letadj", "lf", "lg", "lhang",
282: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 283: "ls", "lsm", "lt",
1.166 schwarze 284: "mediasize", "minss", "mk", "mso",
285: "na", "ne", "nh", "nhychar",
286: "nm", "nn", "nop", "nr",
287: "nrf", "nroff", "ns", "nx",
288: "open", "opena", "os", "output",
289: "padj", "papersize", "pc", "pev",
290: "pi", "PI", "pl", "pm",
1.184 schwarze 291: "pn", "pnr", "ps",
1.166 schwarze 292: "psbb", "pshape", "pso", "ptr",
293: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 294: "return", "rfschar", "rhang",
1.166 schwarze 295: "rm", "rn", "rnn", "rr",
296: "rs", "rt", "schar", "sentchar",
297: "shc", "shift", "sizes", "so",
298: "spacewidth", "special", "spreadwarn", "ss",
299: "sty", "substring", "sv", "sy",
1.172 schwarze 300: "T&", "tc", "TE",
1.173 schwarze 301: "TH", "tkf", "tl",
1.166 schwarze 302: "tm", "tm1", "tmc", "tr",
303: "track", "transchar", "trf", "trimat",
304: "trin", "trnt", "troff", "TS",
305: "uf", "ul", "unformat", "unwatch",
306: "unwatchn", "vpt", "vs", "warn",
307: "warnscale", "watch", "watchlength", "watchn",
308: "wh", "while", "write", "writec",
309: "writem", "xflag", ".", NULL,
1.178 schwarze 310: NULL, "text",
1.166 schwarze 311: "Dd", "Dt", "Os", "Sh",
312: "Ss", "Pp", "D1", "Dl",
313: "Bd", "Ed", "Bl", "El",
314: "It", "Ad", "An", "Ap",
315: "Ar", "Cd", "Cm", "Dv",
316: "Er", "Ev", "Ex", "Fa",
317: "Fd", "Fl", "Fn", "Ft",
318: "Ic", "In", "Li", "Nd",
319: "Nm", "Op", "Ot", "Pa",
320: "Rv", "St", "Va", "Vt",
321: "Xr", "%A", "%B", "%D",
322: "%I", "%J", "%N", "%O",
323: "%P", "%R", "%T", "%V",
324: "Ac", "Ao", "Aq", "At",
325: "Bc", "Bf", "Bo", "Bq",
326: "Bsx", "Bx", "Db", "Dc",
327: "Do", "Dq", "Ec", "Ef",
328: "Em", "Eo", "Fx", "Ms",
329: "No", "Ns", "Nx", "Ox",
330: "Pc", "Pf", "Po", "Pq",
331: "Qc", "Ql", "Qo", "Qq",
332: "Re", "Rs", "Sc", "So",
333: "Sq", "Sm", "Sx", "Sy",
334: "Tn", "Ux", "Xc", "Xo",
335: "Fo", "Fc", "Oo", "Oc",
336: "Bk", "Ek", "Bt", "Hf",
337: "Fr", "Ud", "Lb", "Lp",
338: "Lk", "Mt", "Brq", "Bro",
339: "Brc", "%C", "Es", "En",
1.171 schwarze 340: "Dx", "%Q", "%U", "Ta",
341: NULL,
1.166 schwarze 342: "TH", "SH", "SS", "TP",
1.204 schwarze 343: "TQ",
1.166 schwarze 344: "LP", "PP", "P", "IP",
345: "HP", "SM", "SB", "BI",
346: "IB", "BR", "RB", "R",
347: "B", "I", "IR", "RI",
1.171 schwarze 348: "nf", "fi",
1.166 schwarze 349: "RE", "RS", "DT", "UC",
1.169 schwarze 350: "PD", "AT", "in",
1.205 schwarze 351: "SY", "YS", "OP",
352: "EX", "EE", "UR",
1.189 bentley 353: "UE", "MT", "ME", NULL
1.166 schwarze 354: };
355: const char *const *roff_name = __roff_name;
356:
357: static struct roffmac roffs[TOKEN_NONE] = {
1.168 schwarze 358: { roff_br, NULL, NULL, 0 }, /* br */
1.177 schwarze 359: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.169 schwarze 360: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 361: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 362: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.184 schwarze 363: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 364: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 365: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 366: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 367: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 368: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 369: { roff_unsupp, NULL, NULL, 0 }, /* ab */
370: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
371: { roff_line_ignore, NULL, NULL, 0 }, /* af */
372: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 373: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 374: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
375: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
376: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
377: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
378: { roff_ds, NULL, NULL, 0 }, /* as */
379: { roff_ds, NULL, NULL, 0 }, /* as1 */
380: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
381: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
382: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
383: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
384: { roff_unsupp, NULL, NULL, 0 }, /* blm */
385: { roff_unsupp, NULL, NULL, 0 }, /* box */
386: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
387: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
388: { roff_unsupp, NULL, NULL, 0 }, /* BP */
389: { roff_unsupp, NULL, NULL, 0 }, /* break */
390: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
391: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 schwarze 392: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 393: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
394: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
395: { roff_cc, NULL, NULL, 0 }, /* cc */
396: { roff_insec, NULL, NULL, 0 }, /* cf */
397: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
398: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.213 ! schwarze 399: { roff_char, NULL, NULL, 0 }, /* char */
1.167 schwarze 400: { roff_unsupp, NULL, NULL, 0 }, /* chop */
401: { roff_line_ignore, NULL, NULL, 0 }, /* class */
402: { roff_insec, NULL, NULL, 0 }, /* close */
403: { roff_unsupp, NULL, NULL, 0 }, /* CL */
404: { roff_line_ignore, NULL, NULL, 0 }, /* color */
405: { roff_unsupp, NULL, NULL, 0 }, /* composite */
406: { roff_unsupp, NULL, NULL, 0 }, /* continue */
407: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
408: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
409: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
410: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
411: { roff_unsupp, NULL, NULL, 0 }, /* da */
412: { roff_unsupp, NULL, NULL, 0 }, /* dch */
413: { roff_Dd, NULL, NULL, 0 }, /* Dd */
414: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
415: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
416: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
417: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
418: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
419: { roff_unsupp, NULL, NULL, 0 }, /* device */
420: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
421: { roff_unsupp, NULL, NULL, 0 }, /* di */
422: { roff_unsupp, NULL, NULL, 0 }, /* do */
423: { roff_ds, NULL, NULL, 0 }, /* ds */
424: { roff_ds, NULL, NULL, 0 }, /* ds1 */
425: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
426: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 427: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 428: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
429: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
430: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
431: { roff_unsupp, NULL, NULL, 0 }, /* em */
432: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 433: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 434: { roff_unsupp, NULL, NULL, 0 }, /* EP */
435: { roff_EQ, NULL, NULL, 0 }, /* EQ */
436: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
437: { roff_unsupp, NULL, NULL, 0 }, /* ev */
438: { roff_unsupp, NULL, NULL, 0 }, /* evc */
439: { roff_unsupp, NULL, NULL, 0 }, /* ex */
440: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
441: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
442: { roff_unsupp, NULL, NULL, 0 }, /* fc */
443: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
444: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
445: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
446: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
447: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
448: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
449: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
450: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
451: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
452: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
453: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
454: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
455: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
456: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
457: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
458: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
459: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
460: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
461: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
462: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
463: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
464: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
465: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
466: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
467: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
468: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
469: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
470: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
471: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
472: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
473: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
474: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
475: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
476: { roff_unsupp, NULL, NULL, 0 }, /* index */
477: { roff_it, NULL, NULL, 0 }, /* it */
478: { roff_unsupp, NULL, NULL, 0 }, /* itc */
479: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
480: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
481: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
482: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
483: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
484: { roff_unsupp, NULL, NULL, 0 }, /* lc */
485: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
486: { roff_unsupp, NULL, NULL, 0 }, /* lds */
487: { roff_unsupp, NULL, NULL, 0 }, /* length */
488: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
489: { roff_insec, NULL, NULL, 0 }, /* lf */
490: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
491: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
492: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
493: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
494: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
495: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
496: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
497: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
498: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
499: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
500: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
501: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
502: { roff_insec, NULL, NULL, 0 }, /* mso */
503: { roff_line_ignore, NULL, NULL, 0 }, /* na */
504: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
505: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
506: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
507: { roff_unsupp, NULL, NULL, 0 }, /* nm */
508: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.202 schwarze 509: { roff_nop, NULL, NULL, 0 }, /* nop */
1.167 schwarze 510: { roff_nr, NULL, NULL, 0 }, /* nr */
511: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
512: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
513: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
514: { roff_insec, NULL, NULL, 0 }, /* nx */
515: { roff_insec, NULL, NULL, 0 }, /* open */
516: { roff_insec, NULL, NULL, 0 }, /* opena */
517: { roff_line_ignore, NULL, NULL, 0 }, /* os */
518: { roff_unsupp, NULL, NULL, 0 }, /* output */
519: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
520: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
521: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
522: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
523: { roff_insec, NULL, NULL, 0 }, /* pi */
524: { roff_unsupp, NULL, NULL, 0 }, /* PI */
525: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
526: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
527: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
528: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
529: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
530: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
531: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
532: { roff_insec, NULL, NULL, 0 }, /* pso */
533: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
534: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
535: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
536: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
537: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.211 schwarze 538: { roff_return, NULL, NULL, 0 }, /* return */
1.167 schwarze 539: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
540: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
541: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 542: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 543: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
544: { roff_rr, NULL, NULL, 0 }, /* rr */
545: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
546: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
547: { roff_unsupp, NULL, NULL, 0 }, /* schar */
548: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
549: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.211 schwarze 550: { roff_shift, NULL, NULL, 0 }, /* shift */
1.167 schwarze 551: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
552: { roff_so, NULL, NULL, 0 }, /* so */
553: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
554: { roff_line_ignore, NULL, NULL, 0 }, /* special */
555: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
556: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
557: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
558: { roff_unsupp, NULL, NULL, 0 }, /* substring */
559: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
560: { roff_insec, NULL, NULL, 0 }, /* sy */
561: { roff_T_, NULL, NULL, 0 }, /* T& */
562: { roff_unsupp, NULL, NULL, 0 }, /* tc */
563: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 564: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 565: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
566: { roff_unsupp, NULL, NULL, 0 }, /* tl */
567: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
568: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
569: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
570: { roff_tr, NULL, NULL, 0 }, /* tr */
571: { roff_line_ignore, NULL, NULL, 0 }, /* track */
572: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
573: { roff_insec, NULL, NULL, 0 }, /* trf */
574: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
575: { roff_unsupp, NULL, NULL, 0 }, /* trin */
576: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
577: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
578: { roff_TS, NULL, NULL, 0 }, /* TS */
579: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
580: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
581: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
582: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
583: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
584: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
585: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
586: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
587: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
588: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
589: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
590: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
591: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.212 schwarze 592: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.167 schwarze 593: { roff_insec, NULL, NULL, 0 }, /* write */
594: { roff_insec, NULL, NULL, 0 }, /* writec */
595: { roff_insec, NULL, NULL, 0 }, /* writem */
596: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
597: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 598: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 599: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 600: };
601:
1.37 schwarze 602: /* Array of injected predefined strings. */
603: #define PREDEFS_MAX 38
604: static const struct predef predefs[PREDEFS_MAX] = {
605: #include "predefs.in"
606: };
607:
1.177 schwarze 608: static int roffce_lines; /* number of input lines to center */
609: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 610: static int roffit_lines; /* number of lines to delay */
611: static char *roffit_macro; /* nil-terminated macro line */
612:
1.80 schwarze 613:
1.138 schwarze 614: /* --- request table ------------------------------------------------------ */
615:
1.167 schwarze 616: struct ohash *
617: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 618: {
1.167 schwarze 619: struct ohash *htab;
620: struct roffreq *req;
621: enum roff_tok tok;
622: size_t sz;
623: unsigned int slot;
1.3 schwarze 624:
1.167 schwarze 625: htab = mandoc_malloc(sizeof(*htab));
626: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 627:
1.167 schwarze 628: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 629: if (roff_name[tok] == NULL)
630: continue;
1.167 schwarze 631: sz = strlen(roff_name[tok]);
632: req = mandoc_malloc(sizeof(*req) + sz + 1);
633: req->tok = tok;
634: memcpy(req->name, roff_name[tok], sz + 1);
635: slot = ohash_qlookup(htab, req->name);
636: ohash_insert(htab, slot, req);
1.3 schwarze 637: }
1.167 schwarze 638: return htab;
1.3 schwarze 639: }
640:
1.167 schwarze 641: void
642: roffhash_free(struct ohash *htab)
1.1 schwarze 643: {
1.167 schwarze 644: struct roffreq *req;
645: unsigned int slot;
1.1 schwarze 646:
1.167 schwarze 647: if (htab == NULL)
648: return;
649: for (req = ohash_first(htab, &slot); req != NULL;
650: req = ohash_next(htab, &slot))
651: free(req);
652: ohash_delete(htab);
653: free(htab);
654: }
655:
656: enum roff_tok
657: roffhash_find(struct ohash *htab, const char *name, size_t sz)
658: {
659: struct roffreq *req;
660: const char *end;
661:
662: if (sz) {
663: end = name + sz;
664: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
665: } else
666: req = ohash_find(htab, ohash_qlookup(htab, name));
667: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 668: }
669:
1.138 schwarze 670: /* --- stack of request blocks -------------------------------------------- */
671:
1.1 schwarze 672: /*
673: * Pop the current node off of the stack of roff instructions currently
674: * pending.
675: */
1.212 schwarze 676: static int
1.1 schwarze 677: roffnode_pop(struct roff *r)
678: {
679: struct roffnode *p;
1.212 schwarze 680: int inloop;
1.1 schwarze 681:
1.80 schwarze 682: p = r->last;
1.212 schwarze 683: inloop = p->tok == ROFF_while;
684: r->last = p->parent;
1.16 schwarze 685: free(p->name);
686: free(p->end);
1.1 schwarze 687: free(p);
1.212 schwarze 688: return inloop;
1.1 schwarze 689: }
690:
691: /*
692: * Push a roff node onto the instruction stack. This must later be
693: * removed with roffnode_pop().
694: */
1.11 schwarze 695: static void
1.166 schwarze 696: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 697: int line, int col)
1.1 schwarze 698: {
699: struct roffnode *p;
700:
1.11 schwarze 701: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 702: p->tok = tok;
1.16 schwarze 703: if (name)
704: p->name = mandoc_strdup(name);
1.1 schwarze 705: p->parent = r->last;
706: p->line = line;
707: p->col = col;
1.71 schwarze 708: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 709:
710: r->last = p;
711: }
712:
1.138 schwarze 713: /* --- roff parser state data management ---------------------------------- */
714:
1.1 schwarze 715: static void
716: roff_free1(struct roff *r)
717: {
1.49 schwarze 718: struct tbl_node *tbl;
1.42 schwarze 719: int i;
1.27 schwarze 720:
1.49 schwarze 721: while (NULL != (tbl = r->first_tbl)) {
722: r->first_tbl = tbl->next;
723: tbl_free(tbl);
1.27 schwarze 724: }
725: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 726:
1.191 schwarze 727: if (r->last_eqn != NULL)
728: eqn_free(r->last_eqn);
729: r->last_eqn = r->eqn = NULL;
1.32 schwarze 730:
1.211 schwarze 731: while (r->mstackpos >= 0)
732: roff_userret(r);
733:
1.1 schwarze 734: while (r->last)
735: roffnode_pop(r);
1.27 schwarze 736:
1.96 schwarze 737: free (r->rstack);
738: r->rstack = NULL;
739: r->rstacksz = 0;
740: r->rstackpos = -1;
741:
742: roff_freereg(r->regtab);
743: r->regtab = NULL;
744:
1.42 schwarze 745: roff_freestr(r->strtab);
1.178 schwarze 746: roff_freestr(r->rentab);
1.42 schwarze 747: roff_freestr(r->xmbtab);
1.178 schwarze 748: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 749:
750: if (r->xtab)
751: for (i = 0; i < 128; i++)
752: free(r->xtab[i].p);
753: free(r->xtab);
754: r->xtab = NULL;
1.1 schwarze 755: }
756:
757: void
758: roff_reset(struct roff *r)
759: {
760: roff_free1(r);
1.99 schwarze 761: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 762: r->control = '\0';
763: r->escape = '\\';
1.179 schwarze 764: roffce_lines = 0;
765: roffce_node = NULL;
766: roffit_lines = 0;
767: roffit_macro = NULL;
1.1 schwarze 768: }
769:
770: void
771: roff_free(struct roff *r)
772: {
1.211 schwarze 773: int i;
774:
1.1 schwarze 775: roff_free1(r);
1.211 schwarze 776: for (i = 0; i < r->mstacksz; i++)
777: free(r->mstack[i].argv);
778: free(r->mstack);
1.167 schwarze 779: roffhash_free(r->reqtab);
1.1 schwarze 780: free(r);
781: }
782:
783: struct roff *
1.151 schwarze 784: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 785: {
786: struct roff *r;
787:
1.11 schwarze 788: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 789: r->parse = parse;
1.200 schwarze 790: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.72 schwarze 791: r->options = options;
1.99 schwarze 792: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.211 schwarze 793: r->mstackpos = -1;
1.2 schwarze 794: r->rstackpos = -1;
1.175 schwarze 795: r->escape = '\\';
1.149 schwarze 796: return r;
1.137 schwarze 797: }
798:
1.138 schwarze 799: /* --- syntax tree state data management ---------------------------------- */
800:
1.137 schwarze 801: static void
802: roff_man_free1(struct roff_man *man)
803: {
804:
1.138 schwarze 805: if (man->first != NULL)
806: roff_node_delete(man, man->first);
1.137 schwarze 807: free(man->meta.msec);
808: free(man->meta.vol);
809: free(man->meta.os);
810: free(man->meta.arch);
811: free(man->meta.title);
812: free(man->meta.name);
813: free(man->meta.date);
814: }
815:
816: static void
817: roff_man_alloc1(struct roff_man *man)
818: {
819:
820: memset(&man->meta, 0, sizeof(man->meta));
821: man->first = mandoc_calloc(1, sizeof(*man->first));
822: man->first->type = ROFFT_ROOT;
823: man->last = man->first;
824: man->last_es = NULL;
825: man->flags = 0;
826: man->macroset = MACROSET_NONE;
827: man->lastsec = man->lastnamed = SEC_NONE;
828: man->next = ROFF_NEXT_CHILD;
829: }
830:
831: void
832: roff_man_reset(struct roff_man *man)
833: {
834:
835: roff_man_free1(man);
836: roff_man_alloc1(man);
837: }
838:
839: void
840: roff_man_free(struct roff_man *man)
841: {
842:
843: roff_man_free1(man);
844: free(man);
845: }
846:
847: struct roff_man *
848: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.188 schwarze 849: const char *os_s, int quick)
1.137 schwarze 850: {
851: struct roff_man *man;
852:
853: man = mandoc_calloc(1, sizeof(*man));
854: man->parse = parse;
855: man->roff = roff;
1.188 schwarze 856: man->os_s = os_s;
1.137 schwarze 857: man->quick = quick;
858: roff_man_alloc1(man);
1.168 schwarze 859: roff->man = man;
1.149 schwarze 860: return man;
1.1 schwarze 861: }
862:
1.138 schwarze 863: /* --- syntax tree handling ----------------------------------------------- */
864:
865: struct roff_node *
866: roff_node_alloc(struct roff_man *man, int line, int pos,
867: enum roff_type type, int tok)
868: {
869: struct roff_node *n;
870:
871: n = mandoc_calloc(1, sizeof(*n));
872: n->line = line;
873: n->pos = pos;
874: n->tok = tok;
875: n->type = type;
876: n->sec = man->lastsec;
877:
878: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 879: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 880: else
1.157 schwarze 881: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 882: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 883: n->flags |= NODE_LINE;
1.138 schwarze 884: man->flags &= ~MDOC_NEWLINE;
885:
1.149 schwarze 886: return n;
1.138 schwarze 887: }
888:
889: void
890: roff_node_append(struct roff_man *man, struct roff_node *n)
891: {
892:
893: switch (man->next) {
894: case ROFF_NEXT_SIBLING:
1.153 schwarze 895: if (man->last->next != NULL) {
896: n->next = man->last->next;
897: man->last->next->prev = n;
898: } else
899: man->last->parent->last = n;
1.138 schwarze 900: man->last->next = n;
901: n->prev = man->last;
902: n->parent = man->last->parent;
903: break;
904: case ROFF_NEXT_CHILD:
1.159 schwarze 905: if (man->last->child != NULL) {
906: n->next = man->last->child;
907: man->last->child->prev = n;
908: } else
909: man->last->last = n;
1.138 schwarze 910: man->last->child = n;
911: n->parent = man->last;
912: break;
913: default:
914: abort();
915: }
1.154 schwarze 916: man->last = n;
1.138 schwarze 917:
918: switch (n->type) {
919: case ROFFT_HEAD:
920: n->parent->head = n;
921: break;
922: case ROFFT_BODY:
1.154 schwarze 923: if (n->end != ENDBODY_NOT)
924: return;
1.138 schwarze 925: n->parent->body = n;
926: break;
927: case ROFFT_TAIL:
928: n->parent->tail = n;
929: break;
930: default:
1.154 schwarze 931: return;
1.138 schwarze 932: }
1.154 schwarze 933:
934: /*
935: * Copy over the normalised-data pointer of our parent. Not
936: * everybody has one, but copying a null pointer is fine.
937: */
938:
939: n->norm = n->parent->norm;
940: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 941: }
942:
1.139 schwarze 943: void
944: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
945: {
946: struct roff_node *n;
947:
948: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
949: n->string = roff_strdup(man->roff, word);
950: roff_node_append(man, n);
1.158 schwarze 951: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 952: man->next = ROFF_NEXT_SIBLING;
953: }
954:
955: void
956: roff_word_append(struct roff_man *man, const char *word)
957: {
958: struct roff_node *n;
959: char *addstr, *newstr;
960:
961: n = man->last;
962: addstr = roff_strdup(man->roff, word);
963: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
964: free(addstr);
965: free(n->string);
966: n->string = newstr;
967: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 968: }
969:
970: void
971: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
972: {
973: struct roff_node *n;
974:
975: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
976: roff_node_append(man, n);
977: man->next = ROFF_NEXT_CHILD;
978: }
979:
980: struct roff_node *
981: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
982: {
983: struct roff_node *n;
984:
985: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
986: roff_node_append(man, n);
987: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 988: return n;
1.139 schwarze 989: }
990:
1.138 schwarze 991: struct roff_node *
992: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
993: {
994: struct roff_node *n;
995:
996: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
997: roff_node_append(man, n);
998: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 999: return n;
1.138 schwarze 1000: }
1001:
1002: struct roff_node *
1003: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1004: {
1005: struct roff_node *n;
1006:
1007: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1008: roff_node_append(man, n);
1009: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1010: return n;
1.139 schwarze 1011: }
1012:
1.193 schwarze 1013: static void
1014: roff_addtbl(struct roff_man *man, struct tbl_node *tbl)
1.139 schwarze 1015: {
1016: struct roff_node *n;
1.193 schwarze 1017: const struct tbl_span *span;
1.139 schwarze 1018:
1019: if (man->macroset == MACROSET_MAN)
1.174 schwarze 1020: man_breakscope(man, ROFF_TS);
1.193 schwarze 1021: while ((span = tbl_span(tbl)) != NULL) {
1022: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1023: n->span = span;
1024: roff_node_append(man, n);
1025: n->flags |= NODE_VALID | NODE_ENDED;
1026: man->next = ROFF_NEXT_SIBLING;
1027: }
1.138 schwarze 1028: }
1029:
1030: void
1031: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1032: {
1033:
1034: /* Adjust siblings. */
1035:
1036: if (n->prev)
1037: n->prev->next = n->next;
1038: if (n->next)
1039: n->next->prev = n->prev;
1040:
1041: /* Adjust parent. */
1042:
1043: if (n->parent != NULL) {
1044: if (n->parent->child == n)
1045: n->parent->child = n->next;
1046: if (n->parent->last == n)
1047: n->parent->last = n->prev;
1048: }
1049:
1050: /* Adjust parse point. */
1051:
1052: if (man == NULL)
1053: return;
1054: if (man->last == n) {
1055: if (n->prev == NULL) {
1056: man->last = n->parent;
1057: man->next = ROFF_NEXT_CHILD;
1058: } else {
1059: man->last = n->prev;
1060: man->next = ROFF_NEXT_SIBLING;
1061: }
1062: }
1063: if (man->first == n)
1064: man->first = NULL;
1065: }
1066:
1067: void
1068: roff_node_free(struct roff_node *n)
1069: {
1070:
1071: if (n->args != NULL)
1072: mdoc_argv_free(n->args);
1073: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1074: free(n->norm);
1.191 schwarze 1075: if (n->eqn != NULL)
1076: eqn_box_free(n->eqn);
1.138 schwarze 1077: free(n->string);
1078: free(n);
1079: }
1080:
1081: void
1082: roff_node_delete(struct roff_man *man, struct roff_node *n)
1083: {
1084:
1085: while (n->child != NULL)
1086: roff_node_delete(man, n->child);
1087: roff_node_unlink(man, n);
1088: roff_node_free(n);
1.141 schwarze 1089: }
1090:
1091: void
1092: deroff(char **dest, const struct roff_node *n)
1093: {
1094: char *cp;
1095: size_t sz;
1096:
1097: if (n->type != ROFFT_TEXT) {
1098: for (n = n->child; n != NULL; n = n->next)
1099: deroff(dest, n);
1100: return;
1101: }
1102:
1.160 schwarze 1103: /* Skip leading whitespace. */
1.141 schwarze 1104:
1.160 schwarze 1105: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1106: if (cp[0] == '\\' && cp[1] != '\0' &&
1107: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1108: cp++;
1.160 schwarze 1109: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1110: break;
1111: }
1112:
1.161 schwarze 1113: /* Skip trailing backslash. */
1114:
1115: sz = strlen(cp);
1.162 schwarze 1116: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1117: sz--;
1118:
1.141 schwarze 1119: /* Skip trailing whitespace. */
1120:
1.161 schwarze 1121: for (; sz; sz--)
1.141 schwarze 1122: if ( ! isspace((unsigned char)cp[sz-1]))
1123: break;
1124:
1125: /* Skip empty strings. */
1126:
1127: if (sz == 0)
1128: return;
1129:
1130: if (*dest == NULL) {
1131: *dest = mandoc_strndup(cp, sz);
1132: return;
1133: }
1134:
1135: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1136: free(*dest);
1137: *dest = cp;
1.138 schwarze 1138: }
1139:
1140: /* --- main functions of the roff parser ---------------------------------- */
1141:
1.8 schwarze 1142: /*
1.79 schwarze 1143: * In the current line, expand escape sequences that tend to get
1144: * used in numerical expressions and conditional requests.
1145: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1146: */
1.212 schwarze 1147: static int
1.110 schwarze 1148: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1149: {
1.211 schwarze 1150: struct mctx *ctx; /* current macro call context */
1.81 schwarze 1151: char ubuf[24]; /* buffer to print the number */
1.200 schwarze 1152: struct roff_node *n; /* used for header comments */
1.78 schwarze 1153: const char *start; /* start of the string to process */
1.82 schwarze 1154: char *stesc; /* start of an escape sequence ('\\') */
1.200 schwarze 1155: char *ep; /* end of comment string */
1.23 schwarze 1156: const char *stnam; /* start of the name, after "[(*" */
1157: const char *cp; /* end of the name, e.g. before ']' */
1158: const char *res; /* the string to be substituted */
1.110 schwarze 1159: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1160: size_t maxl; /* expected length of the escape name */
1161: size_t naml; /* actual length of the escape name */
1.211 schwarze 1162: size_t asz; /* length of the replacement */
1163: size_t rsz; /* length of the rest of the string */
1.109 schwarze 1164: enum mandoc_esc esc; /* type of the escape sequence */
1165: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1166: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1167: int npos; /* position in numeric expression */
1.91 schwarze 1168: int arg_complete; /* argument not interrupted by eol */
1.211 schwarze 1169: int quote_args; /* true for \\$@, false for \\$* */
1.175 schwarze 1170: int done; /* no more input available */
1.187 schwarze 1171: int deftype; /* type of definition to paste */
1.195 schwarze 1172: int rcsid; /* kind of RCS id seen */
1.199 schwarze 1173: char sign; /* increment number register */
1.79 schwarze 1174: char term; /* character terminating the escape */
1.8 schwarze 1175:
1.175 schwarze 1176: /* Search forward for comments. */
1177:
1178: done = 0;
1179: start = buf->buf + pos;
1180: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1181: if (stesc[0] != r->escape || stesc[1] == '\0')
1182: continue;
1183: stesc++;
1184: if (*stesc != '"' && *stesc != '#')
1185: continue;
1.185 schwarze 1186:
1187: /* Comment found, look for RCS id. */
1188:
1.195 schwarze 1189: rcsid = 0;
1.185 schwarze 1190: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.195 schwarze 1191: rcsid = 1 << MANDOC_OS_OPENBSD;
1.185 schwarze 1192: cp += 8;
1193: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.195 schwarze 1194: rcsid = 1 << MANDOC_OS_NETBSD;
1.185 schwarze 1195: cp += 7;
1196: }
1197: if (cp != NULL &&
1198: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1199: strchr(cp, '$') != NULL) {
1.195 schwarze 1200: if (r->man->meta.rcsids & rcsid)
1.186 schwarze 1201: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1202: ln, stesc + 1 - buf->buf, stesc + 1);
1.195 schwarze 1203: r->man->meta.rcsids |= rcsid;
1.186 schwarze 1204: }
1.185 schwarze 1205:
1206: /* Handle trailing whitespace. */
1207:
1.200 schwarze 1208: ep = strchr(stesc--, '\0') - 1;
1209: if (*ep == '\n') {
1.175 schwarze 1210: done = 1;
1.200 schwarze 1211: ep--;
1.175 schwarze 1212: }
1.200 schwarze 1213: if (*ep == ' ' || *ep == '\t')
1.175 schwarze 1214: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1.200 schwarze 1215: ln, ep - buf->buf, NULL);
1216:
1217: /*
1218: * Save comments preceding the title macro
1219: * in the syntax tree.
1220: */
1221:
1222: if (r->format == 0) {
1223: while (*ep == ' ' || *ep == '\t')
1224: ep--;
1225: ep[1] = '\0';
1226: n = roff_node_alloc(r->man,
1227: ln, stesc + 1 - buf->buf,
1228: ROFFT_COMMENT, TOKEN_NONE);
1229: n->string = mandoc_strdup(stesc + 2);
1230: roff_node_append(r->man, n);
1231: n->flags |= NODE_VALID | NODE_ENDED;
1232: r->man->next = ROFF_NEXT_SIBLING;
1233: }
1234:
1.206 schwarze 1235: /* Line continuation with comment. */
1236:
1237: if (stesc[1] == '#') {
1238: *stesc = '\0';
1.212 schwarze 1239: return ROFF_IGN | ROFF_APPEND;
1.206 schwarze 1240: }
1241:
1242: /* Discard normal comments. */
1.200 schwarze 1243:
1.207 schwarze 1244: while (stesc > start && stesc[-1] == ' ' &&
1245: (stesc == start + 1 || stesc[-2] != '\\'))
1.175 schwarze 1246: stesc--;
1247: *stesc = '\0';
1248: break;
1249: }
1250: if (stesc == start)
1251: return ROFF_CONT;
1252: stesc--;
1253:
1254: /* Notice the end of the input. */
1255:
1256: if (*stesc == '\n') {
1257: *stesc-- = '\0';
1258: done = 1;
1259: }
1260:
1.43 schwarze 1261: expand_count = 0;
1.175 schwarze 1262: while (stesc >= start) {
1.43 schwarze 1263:
1.78 schwarze 1264: /* Search backwards for the next backslash. */
1265:
1.175 schwarze 1266: if (*stesc != r->escape) {
1267: if (*stesc == '\\') {
1268: *stesc = '\0';
1269: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1270: buf->buf, stesc + 1) + 1;
1271: start = nbuf + pos;
1272: stesc = nbuf + (stesc - buf->buf);
1273: free(buf->buf);
1274: buf->buf = nbuf;
1275: }
1276: stesc--;
1.78 schwarze 1277: continue;
1.175 schwarze 1278: }
1.78 schwarze 1279:
1280: /* If it is escaped, skip it. */
1281:
1282: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1283: if (*cp != r->escape)
1.78 schwarze 1284: break;
1285:
1.110 schwarze 1286: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1287: while (stesc > cp)
1288: *stesc-- = '\\';
1.78 schwarze 1289: continue;
1.175 schwarze 1290: } else if (stesc[1] != '\0') {
1291: *stesc = '\\';
1292: } else {
1293: *stesc-- = '\0';
1294: if (done)
1295: continue;
1296: else
1.212 schwarze 1297: return ROFF_IGN | ROFF_APPEND;
1.78 schwarze 1298: }
1.23 schwarze 1299:
1.79 schwarze 1300: /* Decide whether to expand or to check only. */
1.23 schwarze 1301:
1.79 schwarze 1302: term = '\0';
1.78 schwarze 1303: cp = stesc + 1;
1.53 schwarze 1304: switch (*cp) {
1.80 schwarze 1305: case '*':
1.211 schwarze 1306: case '$':
1.53 schwarze 1307: res = NULL;
1308: break;
1.80 schwarze 1309: case 'B':
1310: case 'w':
1.79 schwarze 1311: term = cp[1];
1312: /* FALLTHROUGH */
1.80 schwarze 1313: case 'n':
1.199 schwarze 1314: sign = cp[1];
1315: if (sign == '+' || sign == '-')
1316: cp++;
1.53 schwarze 1317: res = ubuf;
1318: break;
1319: default:
1.109 schwarze 1320: esc = mandoc_escape(&cp, &stnam, &inaml);
1321: if (esc == ESCAPE_ERROR ||
1322: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1323: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1324: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1325: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1326: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1327: stesc--;
1.78 schwarze 1328: continue;
1.42 schwarze 1329: }
1330:
1.78 schwarze 1331: if (EXPAND_LIMIT < ++expand_count) {
1332: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1333: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1334: return ROFF_IGN;
1.78 schwarze 1335: }
1.23 schwarze 1336:
1337: /*
1338: * The third character decides the length
1.53 schwarze 1339: * of the name of the string or register.
1.23 schwarze 1340: * Save a pointer to the name.
1341: */
1342:
1.110 schwarze 1343: if (term == '\0') {
1.79 schwarze 1344: switch (*++cp) {
1.80 schwarze 1345: case '\0':
1.79 schwarze 1346: maxl = 0;
1347: break;
1.80 schwarze 1348: case '(':
1.79 schwarze 1349: cp++;
1350: maxl = 2;
1351: break;
1.80 schwarze 1352: case '[':
1.79 schwarze 1353: cp++;
1354: term = ']';
1355: maxl = 0;
1356: break;
1357: default:
1358: maxl = 1;
1359: break;
1360: }
1361: } else {
1362: cp += 2;
1.8 schwarze 1363: maxl = 0;
1364: }
1.23 schwarze 1365: stnam = cp;
1.8 schwarze 1366:
1.23 schwarze 1367: /* Advance to the end of the name. */
1.8 schwarze 1368:
1.125 schwarze 1369: naml = 0;
1.91 schwarze 1370: arg_complete = 1;
1.125 schwarze 1371: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1372: if (*cp == '\0') {
1.92 schwarze 1373: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1374: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1375: arg_complete = 0;
1.79 schwarze 1376: break;
1.42 schwarze 1377: }
1.110 schwarze 1378: if (maxl == 0 && *cp == term) {
1.79 schwarze 1379: cp++;
1.125 schwarze 1380: break;
1381: }
1382: if (*cp++ != '\\' || stesc[1] != 'w') {
1383: naml++;
1384: continue;
1385: }
1386: switch (mandoc_escape(&cp, NULL, NULL)) {
1387: case ESCAPE_SPECIAL:
1388: case ESCAPE_UNICODE:
1389: case ESCAPE_NUMBERED:
1390: case ESCAPE_OVERSTRIKE:
1391: naml++;
1392: break;
1393: default:
1.8 schwarze 1394: break;
1.79 schwarze 1395: }
1.8 schwarze 1396: }
1397:
1.23 schwarze 1398: /*
1399: * Retrieve the replacement string; if it is
1400: * undefined, resume searching for escapes.
1401: */
1402:
1.79 schwarze 1403: switch (stesc[1]) {
1.80 schwarze 1404: case '*':
1.187 schwarze 1405: if (arg_complete) {
1406: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1407: res = roff_getstrn(r, stnam, naml, &deftype);
1.203 schwarze 1408:
1409: /*
1410: * If not overriden, let \*(.T
1411: * through to the formatters.
1412: */
1413:
1414: if (res == NULL && naml == 2 &&
1415: stnam[0] == '.' && stnam[1] == 'T') {
1416: roff_setstrn(&r->strtab,
1417: ".T", 2, NULL, 0, 0);
1418: stesc--;
1419: continue;
1420: }
1.187 schwarze 1421: }
1.79 schwarze 1422: break;
1.211 schwarze 1423: case '$':
1424: if (r->mstackpos < 0) {
1425: mandoc_vmsg(MANDOCERR_ARG_UNDEF,
1426: r->parse, ln, (int)(stesc - buf->buf),
1427: "%.3s", stesc);
1428: break;
1429: }
1430: ctx = r->mstack + r->mstackpos;
1431: npos = stesc[2] - '1';
1432: if (npos >= 0 && npos <= 8) {
1433: res = npos < ctx->argc ?
1434: ctx->argv[npos] : "";
1435: break;
1436: }
1437: if (stesc[2] == '*')
1438: quote_args = 0;
1439: else if (stesc[2] == '@')
1440: quote_args = 1;
1441: else {
1442: mandoc_vmsg(MANDOCERR_ARG_NONUM,
1443: r->parse, ln, (int)(stesc - buf->buf),
1444: "%.3s", stesc);
1445: break;
1446: }
1447: asz = 0;
1448: for (npos = 0; npos < ctx->argc; npos++) {
1449: if (npos)
1450: asz++; /* blank */
1451: if (quote_args)
1452: asz += 2; /* quotes */
1453: asz += strlen(ctx->argv[npos]);
1454: }
1455: if (asz != 3) {
1456: rsz = buf->sz - (stesc - buf->buf) - 3;
1457: if (asz < 3)
1458: memmove(stesc + asz, stesc + 3, rsz);
1459: buf->sz += asz - 3;
1460: nbuf = mandoc_realloc(buf->buf, buf->sz);
1461: start = nbuf + pos;
1462: stesc = nbuf + (stesc - buf->buf);
1463: buf->buf = nbuf;
1464: if (asz > 3)
1465: memmove(stesc + asz, stesc + 3, rsz);
1466: }
1467: for (npos = 0; npos < ctx->argc; npos++) {
1468: if (npos)
1469: *stesc++ = ' ';
1470: if (quote_args)
1471: *stesc++ = '"';
1472: cp = ctx->argv[npos];
1473: while (*cp != '\0')
1474: *stesc++ = *cp++;
1475: if (quote_args)
1476: *stesc++ = '"';
1477: }
1478: continue;
1.80 schwarze 1479: case 'B':
1.79 schwarze 1480: npos = 0;
1.91 schwarze 1481: ubuf[0] = arg_complete &&
1.133 schwarze 1482: roff_evalnum(r, ln, stnam, &npos,
1483: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1484: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1485: ubuf[1] = '\0';
1486: break;
1.80 schwarze 1487: case 'n':
1.91 schwarze 1488: if (arg_complete)
1489: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.199 schwarze 1490: roff_getregn(r, stnam, naml, sign));
1.91 schwarze 1491: else
1492: ubuf[0] = '\0';
1.79 schwarze 1493: break;
1.80 schwarze 1494: case 'w':
1.91 schwarze 1495: /* use even incomplete args */
1.81 schwarze 1496: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1497: 24 * (int)naml);
1498: break;
1499: }
1.8 schwarze 1500:
1.110 schwarze 1501: if (res == NULL) {
1.211 schwarze 1502: if (stesc[1] == '*')
1503: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1504: r->parse, ln, (int)(stesc - buf->buf),
1505: "%.*s", (int)naml, stnam);
1.37 schwarze 1506: res = "";
1.118 schwarze 1507: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1508: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1509: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1510: return ROFF_IGN;
1.8 schwarze 1511: }
1512:
1.23 schwarze 1513: /* Replace the escape sequence by the string. */
1514:
1.82 schwarze 1515: *stesc = '\0';
1.110 schwarze 1516: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1517: buf->buf, res, cp) + 1;
1.8 schwarze 1518:
1.78 schwarze 1519: /* Prepare for the next replacement. */
1.8 schwarze 1520:
1.78 schwarze 1521: start = nbuf + pos;
1.110 schwarze 1522: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1523: free(buf->buf);
1524: buf->buf = nbuf;
1.42 schwarze 1525: }
1.149 schwarze 1526: return ROFF_CONT;
1.42 schwarze 1527: }
1528:
1529: /*
1.147 schwarze 1530: * Process text streams.
1.42 schwarze 1531: */
1.212 schwarze 1532: static int
1.177 schwarze 1533: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1534: {
1535: size_t sz;
1536: const char *start;
1.51 schwarze 1537: char *p;
1538: int isz;
1.42 schwarze 1539: enum mandoc_esc esc;
1540:
1.147 schwarze 1541: /* Spring the input line trap. */
1542:
1543: if (roffit_lines == 1) {
1544: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1545: free(buf->buf);
1546: buf->buf = p;
1547: buf->sz = isz + 1;
1548: *offs = 0;
1549: free(roffit_macro);
1550: roffit_lines = 0;
1.149 schwarze 1551: return ROFF_REPARSE;
1.147 schwarze 1552: } else if (roffit_lines > 1)
1553: --roffit_lines;
1554:
1.177 schwarze 1555: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1556: if (roffce_lines < 1) {
1557: r->man->last = roffce_node;
1558: r->man->next = ROFF_NEXT_SIBLING;
1559: roffce_lines = 0;
1560: roffce_node = NULL;
1561: } else
1562: roffce_lines--;
1563: }
1564:
1.147 schwarze 1565: /* Convert all breakable hyphens into ASCII_HYPH. */
1566:
1.110 schwarze 1567: start = p = buf->buf + pos;
1.42 schwarze 1568:
1.110 schwarze 1569: while (*p != '\0') {
1.42 schwarze 1570: sz = strcspn(p, "-\\");
1571: p += sz;
1572:
1.110 schwarze 1573: if (*p == '\0')
1.42 schwarze 1574: break;
1575:
1.110 schwarze 1576: if (*p == '\\') {
1.42 schwarze 1577: /* Skip over escapes. */
1578: p++;
1.62 schwarze 1579: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1580: if (esc == ESCAPE_ERROR)
1.42 schwarze 1581: break;
1.136 schwarze 1582: while (*p == '-')
1583: p++;
1.42 schwarze 1584: continue;
1585: } else if (p == start) {
1586: p++;
1587: continue;
1588: }
1589:
1.44 schwarze 1590: if (isalpha((unsigned char)p[-1]) &&
1591: isalpha((unsigned char)p[1]))
1.42 schwarze 1592: *p = ASCII_HYPH;
1593: p++;
1.8 schwarze 1594: }
1.149 schwarze 1595: return ROFF_CONT;
1.8 schwarze 1596: }
1597:
1.212 schwarze 1598: int
1.110 schwarze 1599: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1600: {
1.166 schwarze 1601: enum roff_tok t;
1.212 schwarze 1602: int e;
1.110 schwarze 1603: int pos; /* parse point */
1.115 schwarze 1604: int spos; /* saved parse point for messages */
1.110 schwarze 1605: int ppos; /* original offset in buf->buf */
1606: int ctl; /* macro line (boolean) */
1607:
1608: ppos = pos = *offs;
1.1 schwarze 1609:
1.102 schwarze 1610: /* Handle in-line equation delimiters. */
1611:
1.108 schwarze 1612: if (r->tbl == NULL &&
1613: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1614: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1615: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1616: if (e == ROFF_REPARSE)
1.149 schwarze 1617: return e;
1.102 schwarze 1618: assert(e == ROFF_CONT);
1619: }
1620:
1621: /* Expand some escape sequences. */
1.8 schwarze 1622:
1.110 schwarze 1623: e = roff_res(r, buf, ln, pos);
1.212 schwarze 1624: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1625: return e;
1.110 schwarze 1626: assert(e == ROFF_CONT);
1.8 schwarze 1627:
1.110 schwarze 1628: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1629:
1.8 schwarze 1630: /*
1.2 schwarze 1631: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1632: * text through the macro's filter.
1633: * Equations process all content themselves.
1634: * Tables process almost all content themselves, but we want
1635: * to warn about macros before passing it there.
1.2 schwarze 1636: */
1637:
1.124 schwarze 1638: if (r->last != NULL && ! ctl) {
1.2 schwarze 1639: t = r->last->tok;
1.110 schwarze 1640: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.212 schwarze 1641: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1642: return e;
1.212 schwarze 1643: e &= ~ROFF_MASK;
1644: } else
1645: e = ROFF_IGN;
1.191 schwarze 1646: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1647: eqn_read(r->eqn, buf->buf + ppos);
1.212 schwarze 1648: return e;
1.191 schwarze 1649: }
1.193 schwarze 1650: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1651: tbl_read(r->tbl, ln, buf->buf, ppos);
1652: roff_addtbl(r->man, r->tbl);
1.212 schwarze 1653: return e;
1.193 schwarze 1654: }
1.124 schwarze 1655: if ( ! ctl)
1.212 schwarze 1656: return roff_parsetext(r, buf, pos, offs) | e;
1.100 schwarze 1657:
1658: /* Skip empty request lines. */
1659:
1.110 schwarze 1660: if (buf->buf[pos] == '"') {
1.100 schwarze 1661: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1662: ln, pos, NULL);
1.149 schwarze 1663: return ROFF_IGN;
1.110 schwarze 1664: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1665: return ROFF_IGN;
1.2 schwarze 1666:
1667: /*
1668: * If a scope is open, go to the child handler for that macro,
1669: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1670: * Don't do so if an equation is open.
1.2 schwarze 1671: */
1672:
1673: if (r->last) {
1.1 schwarze 1674: t = r->last->tok;
1.149 schwarze 1675: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1676: }
1677:
1.115 schwarze 1678: /* No scope is open. This is a new request or macro. */
1679:
1680: spos = pos;
1681: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1682:
1683: /* Tables ignore most macros. */
1684:
1.180 schwarze 1685: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1686: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.115 schwarze 1687: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1688: ln, pos, buf->buf + spos);
1.180 schwarze 1689: if (t != TOKEN_NONE)
1.149 schwarze 1690: return ROFF_IGN;
1.129 schwarze 1691: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1692: pos++;
1.163 schwarze 1693: while (buf->buf[pos] == ' ')
1.129 schwarze 1694: pos++;
1.193 schwarze 1695: tbl_read(r->tbl, ln, buf->buf, pos);
1696: roff_addtbl(r->man, r->tbl);
1697: return ROFF_IGN;
1.115 schwarze 1698: }
1699:
1.177 schwarze 1700: /* For now, let high level macros abort .ce mode. */
1701:
1702: if (ctl && roffce_node != NULL &&
1.196 schwarze 1703: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1704: t == ROFF_TH || t == ROFF_TS)) {
1.177 schwarze 1705: r->man->last = roffce_node;
1706: r->man->next = ROFF_NEXT_SIBLING;
1707: roffce_lines = 0;
1708: roffce_node = NULL;
1709: }
1710:
1.2 schwarze 1711: /*
1.115 schwarze 1712: * This is neither a roff request nor a user-defined macro.
1713: * Let the standard macro set parsers handle it.
1.2 schwarze 1714: */
1715:
1.166 schwarze 1716: if (t == TOKEN_NONE)
1.149 schwarze 1717: return ROFF_CONT;
1.115 schwarze 1718:
1719: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1720:
1.168 schwarze 1721: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1722: }
1723:
1.211 schwarze 1724: /*
1725: * Internal interface function to tell the roff parser that execution
1726: * of the current macro ended. This is required because macro
1727: * definitions usually do not end with a .return request.
1728: */
1729: void
1730: roff_userret(struct roff *r)
1731: {
1732: struct mctx *ctx;
1733: int i;
1734:
1735: assert(r->mstackpos >= 0);
1736: ctx = r->mstack + r->mstackpos;
1737: for (i = 0; i < ctx->argc; i++)
1738: free(ctx->argv[i]);
1739: ctx->argc = 0;
1740: r->mstackpos--;
1741: }
1742:
1.27 schwarze 1743: void
1.2 schwarze 1744: roff_endparse(struct roff *r)
1745: {
1.193 schwarze 1746: if (r->last != NULL)
1.94 schwarze 1747: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1748: r->last->line, r->last->col,
1.167 schwarze 1749: roff_name[r->last->tok]);
1.27 schwarze 1750:
1.193 schwarze 1751: if (r->eqn != NULL) {
1.94 schwarze 1752: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.191 schwarze 1753: r->eqn->node->line, r->eqn->node->pos, "EQ");
1754: eqn_parse(r->eqn);
1755: r->eqn = NULL;
1.32 schwarze 1756: }
1757:
1.193 schwarze 1758: if (r->tbl != NULL) {
1.94 schwarze 1759: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1760: r->tbl->line, r->tbl->pos, "TS");
1.193 schwarze 1761: tbl_end(r->tbl);
1762: r->tbl = NULL;
1.27 schwarze 1763: }
1.1 schwarze 1764: }
1765:
1766: /*
1767: * Parse a roff node's type from the input buffer. This must be in the
1768: * form of ".foo xxx" in the usual way.
1769: */
1.166 schwarze 1770: static enum roff_tok
1.87 schwarze 1771: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1772: {
1.87 schwarze 1773: char *cp;
1.16 schwarze 1774: const char *mac;
1775: size_t maclen;
1.187 schwarze 1776: int deftype;
1.166 schwarze 1777: enum roff_tok t;
1.1 schwarze 1778:
1.87 schwarze 1779: cp = buf + *pos;
1780:
1781: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1782: return TOKEN_NONE;
1.1 schwarze 1783:
1.87 schwarze 1784: mac = cp;
1785: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1786:
1.187 schwarze 1787: deftype = ROFFDEF_USER | ROFFDEF_REN;
1788: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1789: switch (deftype) {
1790: case ROFFDEF_USER:
1791: t = ROFF_USERDEF;
1792: break;
1793: case ROFFDEF_REN:
1794: t = ROFF_RENAMED;
1795: break;
1796: default:
1797: t = roffhash_find(r->reqtab, mac, maclen);
1798: break;
1799: }
1.166 schwarze 1800: if (t != TOKEN_NONE)
1.87 schwarze 1801: *pos = cp - buf;
1.197 schwarze 1802: else if (deftype == ROFFDEF_UNDEF) {
1803: /* Using an undefined macro defines it to be empty. */
1804: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1805: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1806: }
1.149 schwarze 1807: return t;
1.1 schwarze 1808: }
1809:
1.138 schwarze 1810: /* --- handling of request blocks ----------------------------------------- */
1811:
1.212 schwarze 1812: static int
1.2 schwarze 1813: roff_cblock(ROFF_ARGS)
1.1 schwarze 1814: {
1815:
1.2 schwarze 1816: /*
1817: * A block-close `..' should only be invoked as a child of an
1818: * ignore macro, otherwise raise a warning and just ignore it.
1819: */
1820:
1.110 schwarze 1821: if (r->last == NULL) {
1.94 schwarze 1822: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1823: ln, ppos, "..");
1.149 schwarze 1824: return ROFF_IGN;
1.2 schwarze 1825: }
1.1 schwarze 1826:
1.2 schwarze 1827: switch (r->last->tok) {
1.80 schwarze 1828: case ROFF_am:
1.93 schwarze 1829: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1830: case ROFF_ami:
1831: case ROFF_de:
1.23 schwarze 1832: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1833: case ROFF_dei:
1834: case ROFF_ig:
1.2 schwarze 1835: break;
1836: default:
1.94 schwarze 1837: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1838: ln, ppos, "..");
1.149 schwarze 1839: return ROFF_IGN;
1.2 schwarze 1840: }
1841:
1.110 schwarze 1842: if (buf->buf[pos] != '\0')
1.90 schwarze 1843: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1844: ".. %s", buf->buf + pos);
1.2 schwarze 1845:
1846: roffnode_pop(r);
1847: roffnode_cleanscope(r);
1.149 schwarze 1848: return ROFF_IGN;
1.2 schwarze 1849:
1850: }
1.1 schwarze 1851:
1.212 schwarze 1852: static int
1.2 schwarze 1853: roffnode_cleanscope(struct roff *r)
1854: {
1.212 schwarze 1855: int inloop;
1.1 schwarze 1856:
1.212 schwarze 1857: inloop = 0;
1858: while (r->last != NULL) {
1.46 schwarze 1859: if (--r->last->endspan != 0)
1.2 schwarze 1860: break;
1.212 schwarze 1861: inloop += roffnode_pop(r);
1.2 schwarze 1862: }
1.212 schwarze 1863: return inloop;
1.2 schwarze 1864: }
1.1 schwarze 1865:
1.212 schwarze 1866: static int
1.68 schwarze 1867: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1868: {
1869: if (NULL == r->last) {
1.94 schwarze 1870: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1871: ln, ppos, "\\}");
1.212 schwarze 1872: return 0;
1.2 schwarze 1873: }
1.1 schwarze 1874:
1.2 schwarze 1875: switch (r->last->tok) {
1.80 schwarze 1876: case ROFF_el:
1877: case ROFF_ie:
1878: case ROFF_if:
1.212 schwarze 1879: case ROFF_while:
1.2 schwarze 1880: break;
1881: default:
1.94 schwarze 1882: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1883: ln, ppos, "\\}");
1.212 schwarze 1884: return 0;
1.2 schwarze 1885: }
1.1 schwarze 1886:
1.2 schwarze 1887: if (r->last->endspan > -1) {
1.94 schwarze 1888: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1889: ln, ppos, "\\}");
1.212 schwarze 1890: return 0;
1.2 schwarze 1891: }
1892:
1.212 schwarze 1893: return roffnode_pop(r) + roffnode_cleanscope(r);
1.1 schwarze 1894: }
1895:
1.212 schwarze 1896: static int
1.2 schwarze 1897: roff_block(ROFF_ARGS)
1.1 schwarze 1898: {
1.187 schwarze 1899: const char *name, *value;
1900: char *call, *cp, *iname, *rname;
1901: size_t csz, namesz, rsz;
1902: int deftype;
1.16 schwarze 1903:
1.93 schwarze 1904: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1905:
1.110 schwarze 1906: if (tok == ROFF_de1)
1.93 schwarze 1907: tok = ROFF_de;
1.123 schwarze 1908: else if (tok == ROFF_dei1)
1909: tok = ROFF_dei;
1.110 schwarze 1910: else if (tok == ROFF_am1)
1.93 schwarze 1911: tok = ROFF_am;
1.123 schwarze 1912: else if (tok == ROFF_ami1)
1913: tok = ROFF_ami;
1.93 schwarze 1914:
1915: /* Parse the macro name argument. */
1916:
1.110 schwarze 1917: cp = buf->buf + pos;
1918: if (tok == ROFF_ig) {
1.93 schwarze 1919: iname = NULL;
1920: namesz = 0;
1921: } else {
1922: iname = cp;
1923: namesz = roff_getname(r, &cp, ln, ppos);
1924: iname[namesz] = '\0';
1925: }
1.22 schwarze 1926:
1.93 schwarze 1927: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1928:
1.110 schwarze 1929: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1930: deftype = ROFFDEF_USER;
1931: name = roff_getstrn(r, iname, namesz, &deftype);
1932: if (name == NULL) {
1.93 schwarze 1933: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1934: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1935: "%.*s", (int)namesz, iname);
1936: namesz = 0;
1937: } else
1938: namesz = strlen(name);
1939: } else
1940: name = iname;
1.22 schwarze 1941:
1.110 schwarze 1942: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1943: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1944: ln, ppos, roff_name[tok]);
1.149 schwarze 1945: return ROFF_IGN;
1.93 schwarze 1946: }
1.2 schwarze 1947:
1.16 schwarze 1948: roffnode_push(r, tok, name, ln, ppos);
1949:
1950: /*
1951: * At the beginning of a `de' macro, clear the existing string
1952: * with the same name, if there is one. New content will be
1.66 schwarze 1953: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1954: */
1.22 schwarze 1955:
1.183 schwarze 1956: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 1957: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 1958: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 1959: } else if (tok == ROFF_am || tok == ROFF_ami) {
1960: deftype = ROFFDEF_ANY;
1961: value = roff_getstrn(r, iname, namesz, &deftype);
1962: switch (deftype) { /* Before appending, ... */
1963: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1964: roff_setstrn(&r->strtab, name, namesz,
1965: value, strlen(value), 0);
1966: break;
1967: case ROFFDEF_REN: /* call original standard macro. */
1968: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1969: (int)strlen(value), value);
1970: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1971: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1972: free(call);
1973: break;
1974: case ROFFDEF_STD: /* rename and call standard macro. */
1975: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1976: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1977: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1978: (int)rsz, rname);
1979: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1980: free(call);
1981: free(rname);
1982: break;
1983: default:
1984: break;
1985: }
1.183 schwarze 1986: }
1.2 schwarze 1987:
1.110 schwarze 1988: if (*cp == '\0')
1.149 schwarze 1989: return ROFF_IGN;
1.1 schwarze 1990:
1.93 schwarze 1991: /* Get the custom end marker. */
1.22 schwarze 1992:
1.93 schwarze 1993: iname = cp;
1.86 schwarze 1994: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1995:
1996: /* Resolve the end marker if it is indirect. */
1997:
1.110 schwarze 1998: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1999: deftype = ROFFDEF_USER;
2000: name = roff_getstrn(r, iname, namesz, &deftype);
2001: if (name == NULL) {
1.93 schwarze 2002: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 2003: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 2004: "%.*s", (int)namesz, iname);
2005: namesz = 0;
2006: } else
2007: namesz = strlen(name);
2008: } else
2009: name = iname;
2010:
1.86 schwarze 2011: if (namesz)
2012: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 2013:
1.110 schwarze 2014: if (*cp != '\0')
1.90 schwarze 2015: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 2016: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 2017:
1.149 schwarze 2018: return ROFF_IGN;
1.1 schwarze 2019: }
2020:
1.212 schwarze 2021: static int
1.2 schwarze 2022: roff_block_sub(ROFF_ARGS)
1.1 schwarze 2023: {
1.166 schwarze 2024: enum roff_tok t;
1.2 schwarze 2025: int i, j;
2026:
2027: /*
2028: * First check whether a custom macro exists at this level. If
2029: * it does, then check against it. This is some of groff's
2030: * stranger behaviours. If we encountered a custom end-scope
2031: * tag and that tag also happens to be a "real" macro, then we
2032: * need to try interpreting it again as a real macro. If it's
2033: * not, then return ignore. Else continue.
2034: */
2035:
2036: if (r->last->end) {
1.35 schwarze 2037: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 2038: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 2039: break;
1.1 schwarze 2040:
1.110 schwarze 2041: if (r->last->end[j] == '\0' &&
2042: (buf->buf[i] == '\0' ||
2043: buf->buf[i] == ' ' ||
2044: buf->buf[i] == '\t')) {
1.2 schwarze 2045: roffnode_pop(r);
2046: roffnode_cleanscope(r);
1.1 schwarze 2047:
1.110 schwarze 2048: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 2049: i++;
2050:
2051: pos = i;
1.110 schwarze 2052: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 2053: TOKEN_NONE)
1.149 schwarze 2054: return ROFF_RERUN;
2055: return ROFF_IGN;
1.2 schwarze 2056: }
1.1 schwarze 2057: }
2058:
1.2 schwarze 2059: /*
2060: * If we have no custom end-query or lookup failed, then try
2061: * pulling it out of the hashtable.
2062: */
1.1 schwarze 2063:
1.110 schwarze 2064: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 2065:
1.110 schwarze 2066: if (t != ROFF_cblock) {
2067: if (tok != ROFF_ig)
2068: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 2069: return ROFF_IGN;
1.16 schwarze 2070: }
1.1 schwarze 2071:
1.149 schwarze 2072: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 2073: }
2074:
1.212 schwarze 2075: static int
1.2 schwarze 2076: roff_block_text(ROFF_ARGS)
2077: {
2078:
1.110 schwarze 2079: if (tok != ROFF_ig)
2080: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 2081:
1.149 schwarze 2082: return ROFF_IGN;
1.2 schwarze 2083: }
2084:
1.212 schwarze 2085: static int
1.2 schwarze 2086: roff_cond_sub(ROFF_ARGS)
2087: {
1.212 schwarze 2088: char *ep;
2089: int endloop, irc, rr;
1.166 schwarze 2090: enum roff_tok t;
1.2 schwarze 2091:
1.212 schwarze 2092: irc = ROFF_IGN;
1.2 schwarze 2093: rr = r->last->rule;
1.212 schwarze 2094: endloop = tok != ROFF_while ? ROFF_IGN :
2095: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2096: if (roffnode_cleanscope(r))
2097: irc |= endloop;
1.39 schwarze 2098:
1.69 schwarze 2099: /*
2100: * If `\}' occurs on a macro line without a preceding macro,
2101: * drop the line completely.
2102: */
2103:
1.110 schwarze 2104: ep = buf->buf + pos;
2105: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 2106: rr = 0;
1.69 schwarze 2107:
1.50 schwarze 2108: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 2109:
1.110 schwarze 2110: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 2111: switch (ep[1]) {
2112: case '}':
2113: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.212 schwarze 2114: if (roff_ccond(r, ln, ep - buf->buf))
2115: irc |= endloop;
1.190 schwarze 2116: break;
2117: case '\0':
2118: ++ep;
2119: break;
2120: default:
2121: ep += 2;
2122: break;
1.70 schwarze 2123: }
1.50 schwarze 2124: }
1.190 schwarze 2125:
2126: /*
2127: * Fully handle known macros when they are structurally
2128: * required or when the conditional evaluated to true.
2129: */
2130:
2131: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.212 schwarze 2132: irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
2133: (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
2134: rr ? ROFF_CONT : ROFF_IGN;
2135: return irc;
1.2 schwarze 2136: }
2137:
1.212 schwarze 2138: static int
1.2 schwarze 2139: roff_cond_text(ROFF_ARGS)
2140: {
1.37 schwarze 2141: char *ep;
1.212 schwarze 2142: int endloop, irc, rr;
1.2 schwarze 2143:
1.212 schwarze 2144: irc = ROFF_IGN;
1.2 schwarze 2145: rr = r->last->rule;
1.212 schwarze 2146: endloop = tok != ROFF_while ? ROFF_IGN :
2147: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2148: if (roffnode_cleanscope(r))
2149: irc |= endloop;
1.1 schwarze 2150:
1.110 schwarze 2151: ep = buf->buf + pos;
2152: while ((ep = strchr(ep, '\\')) != NULL) {
2153: if (*(++ep) == '}') {
1.70 schwarze 2154: *ep = '&';
1.212 schwarze 2155: if (roff_ccond(r, ln, ep - buf->buf - 1))
2156: irc |= endloop;
1.70 schwarze 2157: }
1.119 schwarze 2158: if (*ep != '\0')
2159: ++ep;
1.2 schwarze 2160: }
1.212 schwarze 2161: if (rr)
2162: irc |= ROFF_CONT;
2163: return irc;
1.2 schwarze 2164: }
2165:
1.138 schwarze 2166: /* --- handling of numeric and conditional expressions -------------------- */
2167:
1.77 schwarze 2168: /*
2169: * Parse a single signed integer number. Stop at the first non-digit.
2170: * If there is at least one digit, return success and advance the
2171: * parse point, else return failure and let the parse point unchanged.
2172: * Ignore overflows, treat them just like the C language.
2173: */
1.56 schwarze 2174: static int
1.133 schwarze 2175: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2176: {
1.133 schwarze 2177: int myres, scaled, n, p;
1.79 schwarze 2178:
2179: if (NULL == res)
2180: res = &myres;
1.56 schwarze 2181:
2182: p = *pos;
2183: n = v[p] == '-';
1.133 schwarze 2184: if (n || v[p] == '+')
1.56 schwarze 2185: p++;
2186:
1.133 schwarze 2187: if (flags & ROFFNUM_WHITE)
2188: while (isspace((unsigned char)v[p]))
2189: p++;
2190:
1.56 schwarze 2191: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2192: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2193: if (p == *pos + n)
2194: return 0;
2195:
2196: if (n)
2197: *res = -*res;
2198:
1.126 schwarze 2199: /* Each number may be followed by one optional scaling unit. */
2200:
2201: switch (v[p]) {
2202: case 'f':
1.133 schwarze 2203: scaled = *res * 65536;
1.126 schwarze 2204: break;
2205: case 'i':
1.133 schwarze 2206: scaled = *res * 240;
1.126 schwarze 2207: break;
2208: case 'c':
1.133 schwarze 2209: scaled = *res * 240 / 2.54;
1.126 schwarze 2210: break;
2211: case 'v':
2212: case 'P':
1.133 schwarze 2213: scaled = *res * 40;
1.126 schwarze 2214: break;
2215: case 'm':
2216: case 'n':
1.133 schwarze 2217: scaled = *res * 24;
1.126 schwarze 2218: break;
2219: case 'p':
1.133 schwarze 2220: scaled = *res * 10 / 3;
1.126 schwarze 2221: break;
2222: case 'u':
1.133 schwarze 2223: scaled = *res;
1.126 schwarze 2224: break;
2225: case 'M':
1.133 schwarze 2226: scaled = *res * 6 / 25;
1.126 schwarze 2227: break;
2228: default:
1.133 schwarze 2229: scaled = *res;
1.126 schwarze 2230: p--;
2231: break;
2232: }
1.133 schwarze 2233: if (flags & ROFFNUM_SCALE)
2234: *res = scaled;
1.126 schwarze 2235:
2236: *pos = p + 1;
1.149 schwarze 2237: return 1;
1.56 schwarze 2238: }
2239:
1.71 schwarze 2240: /*
2241: * Evaluate a string comparison condition.
2242: * The first character is the delimiter.
2243: * Succeed if the string up to its second occurrence
2244: * matches the string up to its third occurence.
2245: * Advance the cursor after the third occurrence
2246: * or lacking that, to the end of the line.
2247: */
2248: static int
2249: roff_evalstrcond(const char *v, int *pos)
2250: {
2251: const char *s1, *s2, *s3;
2252: int match;
2253:
2254: match = 0;
2255: s1 = v + *pos; /* initial delimiter */
2256: s2 = s1 + 1; /* for scanning the first string */
2257: s3 = strchr(s2, *s1); /* for scanning the second string */
2258:
2259: if (NULL == s3) /* found no middle delimiter */
2260: goto out;
2261:
2262: while ('\0' != *++s3) {
2263: if (*s2 != *s3) { /* mismatch */
2264: s3 = strchr(s3, *s1);
2265: break;
2266: }
2267: if (*s3 == *s1) { /* found the final delimiter */
2268: match = 1;
2269: break;
2270: }
2271: s2++;
2272: }
2273:
2274: out:
2275: if (NULL == s3)
2276: s3 = strchr(s2, '\0');
1.114 schwarze 2277: else if (*s3 != '\0')
1.71 schwarze 2278: s3++;
2279: *pos = s3 - v;
1.149 schwarze 2280: return match;
1.71 schwarze 2281: }
2282:
1.77 schwarze 2283: /*
2284: * Evaluate an optionally negated single character, numerical,
2285: * or string condition.
2286: */
1.71 schwarze 2287: static int
1.143 schwarze 2288: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2289: {
1.208 schwarze 2290: const char *start, *end;
2291: char *cp, *name;
2292: size_t sz;
2293: int deftype, len, number, savepos, istrue, wanttrue;
1.5 schwarze 2294:
1.71 schwarze 2295: if ('!' == v[*pos]) {
2296: wanttrue = 0;
2297: (*pos)++;
2298: } else
2299: wanttrue = 1;
2300:
1.5 schwarze 2301: switch (v[*pos]) {
1.112 schwarze 2302: case '\0':
1.149 schwarze 2303: return 0;
1.80 schwarze 2304: case 'n':
2305: case 'o':
1.5 schwarze 2306: (*pos)++;
1.149 schwarze 2307: return wanttrue;
1.80 schwarze 2308: case 'e':
2309: case 't':
1.111 schwarze 2310: case 'v':
1.5 schwarze 2311: (*pos)++;
1.149 schwarze 2312: return !wanttrue;
1.208 schwarze 2313: case 'c':
2314: do {
2315: (*pos)++;
2316: } while (v[*pos] == ' ');
2317:
2318: /*
2319: * Quirk for groff compatibility:
2320: * The horizontal tab is neither available nor unavailable.
2321: */
2322:
2323: if (v[*pos] == '\t') {
2324: (*pos)++;
2325: return 0;
2326: }
2327:
2328: /* Printable ASCII characters are available. */
2329:
2330: if (v[*pos] != '\\') {
2331: (*pos)++;
2332: return wanttrue;
2333: }
2334:
2335: end = v + ++*pos;
2336: switch (mandoc_escape(&end, &start, &len)) {
2337: case ESCAPE_SPECIAL:
2338: istrue = mchars_spec2cp(start, len) != -1;
2339: break;
2340: case ESCAPE_UNICODE:
2341: istrue = 1;
2342: break;
2343: case ESCAPE_NUMBERED:
2344: istrue = mchars_num2char(start, len) != -1;
2345: break;
2346: default:
2347: istrue = !wanttrue;
2348: break;
2349: }
2350: *pos = end - v;
2351: return istrue == wanttrue;
1.182 schwarze 2352: case 'd':
1.143 schwarze 2353: case 'r':
1.182 schwarze 2354: cp = v + *pos + 1;
2355: while (*cp == ' ')
2356: cp++;
2357: name = cp;
2358: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2359: if (sz == 0)
2360: istrue = 0;
2361: else if (v[*pos] == 'r')
2362: istrue = roff_hasregn(r, name, sz);
2363: else {
2364: deftype = ROFFDEF_ANY;
2365: roff_getstrn(r, name, sz, &deftype);
2366: istrue = !!deftype;
2367: }
1.143 schwarze 2368: *pos = cp - v;
1.182 schwarze 2369: return istrue == wanttrue;
1.5 schwarze 2370: default:
2371: break;
2372: }
2373:
1.113 schwarze 2374: savepos = *pos;
1.133 schwarze 2375: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2376: return (number > 0) == wanttrue;
1.113 schwarze 2377: else if (*pos == savepos)
1.149 schwarze 2378: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2379: else
1.149 schwarze 2380: return 0;
1.5 schwarze 2381: }
2382:
1.212 schwarze 2383: static int
1.21 schwarze 2384: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2385: {
1.30 schwarze 2386:
1.149 schwarze 2387: return ROFF_IGN;
1.21 schwarze 2388: }
2389:
1.212 schwarze 2390: static int
1.123 schwarze 2391: roff_insec(ROFF_ARGS)
2392: {
2393:
2394: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2395: ln, ppos, roff_name[tok]);
1.149 schwarze 2396: return ROFF_IGN;
1.123 schwarze 2397: }
2398:
1.212 schwarze 2399: static int
1.123 schwarze 2400: roff_unsupp(ROFF_ARGS)
2401: {
2402:
2403: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2404: ln, ppos, roff_name[tok]);
1.149 schwarze 2405: return ROFF_IGN;
1.123 schwarze 2406: }
2407:
1.212 schwarze 2408: static int
1.2 schwarze 2409: roff_cond(ROFF_ARGS)
2410: {
1.212 schwarze 2411: int irc;
1.46 schwarze 2412:
2413: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2414:
1.80 schwarze 2415: /*
1.35 schwarze 2416: * An `.el' has no conditional body: it will consume the value
2417: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2418: * defaults to DENY.
1.35 schwarze 2419: *
2420: * If we're not an `el', however, then evaluate the conditional.
2421: */
1.1 schwarze 2422:
1.110 schwarze 2423: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2424: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2425: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2426:
1.35 schwarze 2427: /*
2428: * An if-else will put the NEGATION of the current evaluated
2429: * conditional into the stack of rules.
2430: */
2431:
1.110 schwarze 2432: if (tok == ROFF_ie) {
1.96 schwarze 2433: if (r->rstackpos + 1 == r->rstacksz) {
2434: r->rstacksz += 16;
2435: r->rstack = mandoc_reallocarray(r->rstack,
2436: r->rstacksz, sizeof(int));
1.35 schwarze 2437: }
1.71 schwarze 2438: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2439: }
1.5 schwarze 2440:
2441: /* If the parent has false as its rule, then so do we. */
2442:
1.71 schwarze 2443: if (r->last->parent && !r->last->parent->rule)
2444: r->last->rule = 0;
1.5 schwarze 2445:
2446: /*
1.46 schwarze 2447: * Determine scope.
2448: * If there is nothing on the line after the conditional,
2449: * not even whitespace, use next-line scope.
1.212 schwarze 2450: * Except that .while does not support next-line scope.
1.5 schwarze 2451: */
1.2 schwarze 2452:
1.212 schwarze 2453: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.46 schwarze 2454: r->last->endspan = 2;
2455: goto out;
2456: }
2457:
1.110 schwarze 2458: while (buf->buf[pos] == ' ')
1.46 schwarze 2459: pos++;
2460:
2461: /* An opening brace requests multiline scope. */
1.2 schwarze 2462:
1.110 schwarze 2463: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2464: r->last->endspan = -1;
2465: pos += 2;
1.144 schwarze 2466: while (buf->buf[pos] == ' ')
2467: pos++;
1.46 schwarze 2468: goto out;
1.80 schwarze 2469: }
1.2 schwarze 2470:
2471: /*
1.46 schwarze 2472: * Anything else following the conditional causes
2473: * single-line scope. Warn if the scope contains
2474: * nothing but trailing whitespace.
1.2 schwarze 2475: */
2476:
1.110 schwarze 2477: if (buf->buf[pos] == '\0')
1.89 schwarze 2478: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2479: ln, ppos, roff_name[tok]);
1.2 schwarze 2480:
1.46 schwarze 2481: r->last->endspan = 1;
1.1 schwarze 2482:
1.46 schwarze 2483: out:
1.2 schwarze 2484: *offs = pos;
1.212 schwarze 2485: irc = ROFF_RERUN;
2486: if (tok == ROFF_while)
2487: irc |= ROFF_WHILE;
2488: return irc;
1.1 schwarze 2489: }
2490:
1.212 schwarze 2491: static int
1.7 schwarze 2492: roff_ds(ROFF_ARGS)
2493: {
1.85 schwarze 2494: char *string;
2495: const char *name;
2496: size_t namesz;
1.10 schwarze 2497:
1.123 schwarze 2498: /* Ignore groff compatibility mode for now. */
2499:
2500: if (tok == ROFF_ds1)
2501: tok = ROFF_ds;
2502: else if (tok == ROFF_as1)
2503: tok = ROFF_as;
2504:
1.10 schwarze 2505: /*
1.85 schwarze 2506: * The first word is the name of the string.
2507: * If it is empty or terminated by an escape sequence,
2508: * abort the `ds' request without defining anything.
1.10 schwarze 2509: */
1.7 schwarze 2510:
1.110 schwarze 2511: name = string = buf->buf + pos;
2512: if (*name == '\0')
1.149 schwarze 2513: return ROFF_IGN;
1.7 schwarze 2514:
1.85 schwarze 2515: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2516: if (name[namesz] == '\\')
1.149 schwarze 2517: return ROFF_IGN;
1.85 schwarze 2518:
2519: /* Read past the initial double-quote, if any. */
1.110 schwarze 2520: if (*string == '"')
1.7 schwarze 2521: string++;
2522:
1.10 schwarze 2523: /* The rest is the value. */
1.85 schwarze 2524: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2525: ROFF_as == tok);
1.183 schwarze 2526: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2527: return ROFF_IGN;
1.7 schwarze 2528: }
2529:
1.77 schwarze 2530: /*
2531: * Parse a single operator, one or two characters long.
2532: * If the operator is recognized, return success and advance the
2533: * parse point, else return failure and let the parse point unchanged.
2534: */
2535: static int
2536: roff_getop(const char *v, int *pos, char *res)
2537: {
2538:
2539: *res = v[*pos];
2540:
2541: switch (*res) {
1.80 schwarze 2542: case '+':
2543: case '-':
2544: case '*':
2545: case '/':
2546: case '%':
2547: case '&':
2548: case ':':
1.77 schwarze 2549: break;
2550: case '<':
2551: switch (v[*pos + 1]) {
1.80 schwarze 2552: case '=':
1.77 schwarze 2553: *res = 'l';
2554: (*pos)++;
2555: break;
1.80 schwarze 2556: case '>':
1.77 schwarze 2557: *res = '!';
2558: (*pos)++;
2559: break;
1.80 schwarze 2560: case '?':
1.77 schwarze 2561: *res = 'i';
2562: (*pos)++;
2563: break;
2564: default:
2565: break;
2566: }
2567: break;
2568: case '>':
2569: switch (v[*pos + 1]) {
1.80 schwarze 2570: case '=':
1.77 schwarze 2571: *res = 'g';
2572: (*pos)++;
2573: break;
1.80 schwarze 2574: case '?':
1.77 schwarze 2575: *res = 'a';
2576: (*pos)++;
2577: break;
2578: default:
2579: break;
2580: }
2581: break;
2582: case '=':
2583: if ('=' == v[*pos + 1])
2584: (*pos)++;
2585: break;
2586: default:
1.149 schwarze 2587: return 0;
1.77 schwarze 2588: }
2589: (*pos)++;
2590:
1.149 schwarze 2591: return *res;
1.77 schwarze 2592: }
2593:
2594: /*
2595: * Evaluate either a parenthesized numeric expression
2596: * or a single signed integer number.
2597: */
2598: static int
1.106 schwarze 2599: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2600: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2601: {
2602:
2603: if ('(' != v[*pos])
1.149 schwarze 2604: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2605:
2606: (*pos)++;
1.133 schwarze 2607: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2608: return 0;
1.77 schwarze 2609:
1.79 schwarze 2610: /*
2611: * Omission of the closing parenthesis
2612: * is an error in validation mode,
2613: * but ignored in evaluation mode.
2614: */
2615:
1.77 schwarze 2616: if (')' == v[*pos])
2617: (*pos)++;
1.79 schwarze 2618: else if (NULL == res)
1.149 schwarze 2619: return 0;
1.77 schwarze 2620:
1.149 schwarze 2621: return 1;
1.77 schwarze 2622: }
2623:
2624: /*
2625: * Evaluate a complete numeric expression.
2626: * Proceed left to right, there is no concept of precedence.
2627: */
2628: static int
1.106 schwarze 2629: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2630: int *pos, int *res, int flags)
1.77 schwarze 2631: {
2632: int mypos, operand2;
2633: char operator;
2634:
2635: if (NULL == pos) {
2636: mypos = 0;
2637: pos = &mypos;
2638: }
2639:
1.133 schwarze 2640: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2641: while (isspace((unsigned char)v[*pos]))
2642: (*pos)++;
2643:
1.133 schwarze 2644: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2645: return 0;
1.77 schwarze 2646:
2647: while (1) {
1.133 schwarze 2648: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2649: while (isspace((unsigned char)v[*pos]))
2650: (*pos)++;
2651:
2652: if ( ! roff_getop(v, pos, &operator))
2653: break;
2654:
1.133 schwarze 2655: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2656: while (isspace((unsigned char)v[*pos]))
2657: (*pos)++;
2658:
1.133 schwarze 2659: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2660: return 0;
1.77 schwarze 2661:
1.133 schwarze 2662: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2663: while (isspace((unsigned char)v[*pos]))
2664: (*pos)++;
1.79 schwarze 2665:
2666: if (NULL == res)
2667: continue;
1.77 schwarze 2668:
2669: switch (operator) {
1.80 schwarze 2670: case '+':
1.77 schwarze 2671: *res += operand2;
2672: break;
1.80 schwarze 2673: case '-':
1.77 schwarze 2674: *res -= operand2;
2675: break;
1.80 schwarze 2676: case '*':
1.77 schwarze 2677: *res *= operand2;
2678: break;
1.80 schwarze 2679: case '/':
1.116 schwarze 2680: if (operand2 == 0) {
1.106 schwarze 2681: mandoc_msg(MANDOCERR_DIVZERO,
2682: r->parse, ln, *pos, v);
2683: *res = 0;
2684: break;
2685: }
1.77 schwarze 2686: *res /= operand2;
2687: break;
1.80 schwarze 2688: case '%':
1.116 schwarze 2689: if (operand2 == 0) {
2690: mandoc_msg(MANDOCERR_DIVZERO,
2691: r->parse, ln, *pos, v);
2692: *res = 0;
2693: break;
2694: }
1.77 schwarze 2695: *res %= operand2;
2696: break;
1.80 schwarze 2697: case '<':
1.77 schwarze 2698: *res = *res < operand2;
2699: break;
1.80 schwarze 2700: case '>':
1.77 schwarze 2701: *res = *res > operand2;
2702: break;
1.80 schwarze 2703: case 'l':
1.77 schwarze 2704: *res = *res <= operand2;
2705: break;
1.80 schwarze 2706: case 'g':
1.77 schwarze 2707: *res = *res >= operand2;
2708: break;
1.80 schwarze 2709: case '=':
1.77 schwarze 2710: *res = *res == operand2;
2711: break;
1.80 schwarze 2712: case '!':
1.77 schwarze 2713: *res = *res != operand2;
2714: break;
1.80 schwarze 2715: case '&':
1.77 schwarze 2716: *res = *res && operand2;
2717: break;
1.80 schwarze 2718: case ':':
1.77 schwarze 2719: *res = *res || operand2;
2720: break;
1.80 schwarze 2721: case 'i':
1.77 schwarze 2722: if (operand2 < *res)
2723: *res = operand2;
2724: break;
1.80 schwarze 2725: case 'a':
1.77 schwarze 2726: if (operand2 > *res)
2727: *res = operand2;
2728: break;
2729: default:
2730: abort();
2731: }
2732: }
1.149 schwarze 2733: return 1;
1.77 schwarze 2734: }
2735:
1.138 schwarze 2736: /* --- register management ------------------------------------------------ */
2737:
1.52 schwarze 2738: void
1.60 schwarze 2739: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2740: {
1.199 schwarze 2741: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.198 schwarze 2742: }
2743:
2744: static void
2745: roff_setregn(struct roff *r, const char *name, size_t len,
1.199 schwarze 2746: int val, char sign, int step)
1.198 schwarze 2747: {
1.52 schwarze 2748: struct roffreg *reg;
2749:
2750: /* Search for an existing register with the same name. */
2751: reg = r->regtab;
2752:
1.198 schwarze 2753: while (reg != NULL && (reg->key.sz != len ||
2754: strncmp(reg->key.p, name, len) != 0))
1.52 schwarze 2755: reg = reg->next;
1.41 schwarze 2756:
1.52 schwarze 2757: if (NULL == reg) {
2758: /* Create a new register. */
2759: reg = mandoc_malloc(sizeof(struct roffreg));
1.198 schwarze 2760: reg->key.p = mandoc_strndup(name, len);
2761: reg->key.sz = len;
1.60 schwarze 2762: reg->val = 0;
1.199 schwarze 2763: reg->step = 0;
1.52 schwarze 2764: reg->next = r->regtab;
2765: r->regtab = reg;
2766: }
2767:
1.60 schwarze 2768: if ('+' == sign)
2769: reg->val += val;
2770: else if ('-' == sign)
2771: reg->val -= val;
2772: else
2773: reg->val = val;
1.199 schwarze 2774: if (step != INT_MIN)
2775: reg->step = step;
1.41 schwarze 2776: }
2777:
1.65 schwarze 2778: /*
2779: * Handle some predefined read-only number registers.
2780: * For now, return -1 if the requested register is not predefined;
2781: * in case a predefined read-only register having the value -1
2782: * were to turn up, another special value would have to be chosen.
2783: */
2784: static int
1.145 schwarze 2785: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2786: {
2787:
2788: switch (*name) {
1.145 schwarze 2789: case '$': /* Number of arguments of the last macro evaluated. */
1.211 schwarze 2790: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.80 schwarze 2791: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2792: return 0;
1.80 schwarze 2793: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2794: return 1;
1.80 schwarze 2795: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2796: return 24;
1.80 schwarze 2797: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2798: return 0;
1.80 schwarze 2799: case 'T': /* Some output device is always defined. */
1.149 schwarze 2800: return 1;
1.80 schwarze 2801: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2802: return 40;
1.65 schwarze 2803: default:
1.149 schwarze 2804: return -1;
1.65 schwarze 2805: }
2806: }
2807:
1.53 schwarze 2808: int
1.198 schwarze 2809: roff_getreg(struct roff *r, const char *name)
1.41 schwarze 2810: {
1.199 schwarze 2811: return roff_getregn(r, name, strlen(name), '\0');
1.53 schwarze 2812: }
2813:
2814: static int
1.199 schwarze 2815: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.53 schwarze 2816: {
2817: struct roffreg *reg;
1.65 schwarze 2818: int val;
2819:
2820: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2821: val = roff_getregro(r, name + 1);
1.65 schwarze 2822: if (-1 != val)
1.149 schwarze 2823: return val;
1.65 schwarze 2824: }
1.53 schwarze 2825:
1.199 schwarze 2826: for (reg = r->regtab; reg; reg = reg->next) {
1.53 schwarze 2827: if (len == reg->key.sz &&
1.199 schwarze 2828: 0 == strncmp(name, reg->key.p, len)) {
2829: switch (sign) {
2830: case '+':
2831: reg->val += reg->step;
2832: break;
2833: case '-':
2834: reg->val -= reg->step;
2835: break;
2836: default:
2837: break;
2838: }
1.149 schwarze 2839: return reg->val;
1.199 schwarze 2840: }
2841: }
1.143 schwarze 2842:
1.199 schwarze 2843: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.149 schwarze 2844: return 0;
1.143 schwarze 2845: }
2846:
2847: static int
2848: roff_hasregn(const struct roff *r, const char *name, size_t len)
2849: {
2850: struct roffreg *reg;
2851: int val;
2852:
2853: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2854: val = roff_getregro(r, name + 1);
1.143 schwarze 2855: if (-1 != val)
1.149 schwarze 2856: return 1;
1.143 schwarze 2857: }
2858:
2859: for (reg = r->regtab; reg; reg = reg->next)
2860: if (len == reg->key.sz &&
2861: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2862: return 1;
1.41 schwarze 2863:
1.149 schwarze 2864: return 0;
1.41 schwarze 2865: }
2866:
1.52 schwarze 2867: static void
2868: roff_freereg(struct roffreg *reg)
1.41 schwarze 2869: {
1.52 schwarze 2870: struct roffreg *old_reg;
1.41 schwarze 2871:
1.52 schwarze 2872: while (NULL != reg) {
2873: free(reg->key.p);
2874: old_reg = reg;
2875: reg = reg->next;
2876: free(old_reg);
2877: }
1.41 schwarze 2878: }
1.7 schwarze 2879:
1.212 schwarze 2880: static int
1.6 schwarze 2881: roff_nr(ROFF_ARGS)
1.1 schwarze 2882: {
1.199 schwarze 2883: char *key, *val, *step;
1.85 schwarze 2884: size_t keysz;
1.199 schwarze 2885: int iv, is, len;
1.60 schwarze 2886: char sign;
1.6 schwarze 2887:
1.110 schwarze 2888: key = val = buf->buf + pos;
2889: if (*key == '\0')
1.149 schwarze 2890: return ROFF_IGN;
1.85 schwarze 2891:
2892: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2893: if (key[keysz] == '\\')
1.149 schwarze 2894: return ROFF_IGN;
1.6 schwarze 2895:
1.60 schwarze 2896: sign = *val;
1.110 schwarze 2897: if (sign == '+' || sign == '-')
1.60 schwarze 2898: val++;
2899:
1.199 schwarze 2900: len = 0;
2901: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2902: return ROFF_IGN;
2903:
2904: step = val + len;
2905: while (isspace((unsigned char)*step))
2906: step++;
2907: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2908: is = INT_MIN;
1.1 schwarze 2909:
1.199 schwarze 2910: roff_setregn(r, key, keysz, iv, sign, is);
1.149 schwarze 2911: return ROFF_IGN;
1.76 schwarze 2912: }
2913:
1.212 schwarze 2914: static int
1.76 schwarze 2915: roff_rr(ROFF_ARGS)
2916: {
2917: struct roffreg *reg, **prev;
1.85 schwarze 2918: char *name, *cp;
2919: size_t namesz;
1.76 schwarze 2920:
1.110 schwarze 2921: name = cp = buf->buf + pos;
2922: if (*name == '\0')
1.149 schwarze 2923: return ROFF_IGN;
1.85 schwarze 2924: namesz = roff_getname(r, &cp, ln, pos);
2925: name[namesz] = '\0';
1.76 schwarze 2926:
2927: prev = &r->regtab;
2928: while (1) {
2929: reg = *prev;
1.110 schwarze 2930: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2931: break;
2932: prev = ®->next;
2933: }
1.110 schwarze 2934: if (reg != NULL) {
1.76 schwarze 2935: *prev = reg->next;
2936: free(reg->key.p);
2937: free(reg);
2938: }
1.149 schwarze 2939: return ROFF_IGN;
1.29 schwarze 2940: }
2941:
1.138 schwarze 2942: /* --- handler functions for roff requests -------------------------------- */
2943:
1.212 schwarze 2944: static int
1.29 schwarze 2945: roff_rm(ROFF_ARGS)
2946: {
2947: const char *name;
2948: char *cp;
1.85 schwarze 2949: size_t namesz;
1.29 schwarze 2950:
1.110 schwarze 2951: cp = buf->buf + pos;
2952: while (*cp != '\0') {
1.85 schwarze 2953: name = cp;
1.110 schwarze 2954: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2955: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 2956: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 2957: if (name[namesz] == '\\')
1.85 schwarze 2958: break;
1.29 schwarze 2959: }
1.149 schwarze 2960: return ROFF_IGN;
1.51 schwarze 2961: }
2962:
1.212 schwarze 2963: static int
1.51 schwarze 2964: roff_it(ROFF_ARGS)
2965: {
2966: int iv;
2967:
2968: /* Parse the number of lines. */
1.133 schwarze 2969:
2970: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2971: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2972: ln, ppos, buf->buf + 1);
1.149 schwarze 2973: return ROFF_IGN;
1.51 schwarze 2974: }
2975:
1.134 schwarze 2976: while (isspace((unsigned char)buf->buf[pos]))
2977: pos++;
2978:
2979: /*
2980: * Arm the input line trap.
2981: * Special-casing "an-trap" is an ugly workaround to cope
2982: * with DocBook stupidly fiddling with man(7) internals.
2983: */
1.133 schwarze 2984:
1.51 schwarze 2985: roffit_lines = iv;
1.134 schwarze 2986: roffit_macro = mandoc_strdup(iv != 1 ||
2987: strcmp(buf->buf + pos, "an-trap") ?
2988: buf->buf + pos : "br");
1.149 schwarze 2989: return ROFF_IGN;
1.47 schwarze 2990: }
2991:
1.212 schwarze 2992: static int
1.47 schwarze 2993: roff_Dd(ROFF_ARGS)
2994: {
1.187 schwarze 2995: int mask;
2996: enum roff_tok t, te;
1.99 schwarze 2997:
1.187 schwarze 2998: switch (tok) {
2999: case ROFF_Dd:
3000: tok = MDOC_Dd;
3001: te = MDOC_MAX;
3002: if (r->format == 0)
3003: r->format = MPARSE_MDOC;
3004: mask = MPARSE_MDOC | MPARSE_QUICK;
3005: break;
3006: case ROFF_TH:
3007: tok = MAN_TH;
3008: te = MAN_MAX;
3009: if (r->format == 0)
3010: r->format = MPARSE_MAN;
3011: mask = MPARSE_QUICK;
3012: break;
3013: default:
3014: abort();
3015: }
3016: if ((r->options & mask) == 0)
3017: for (t = tok; t < te; t++)
3018: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 3019: return ROFF_CONT;
1.14 schwarze 3020: }
3021:
1.212 schwarze 3022: static int
1.27 schwarze 3023: roff_TE(ROFF_ARGS)
3024: {
1.193 schwarze 3025: if (r->tbl == NULL) {
1.94 schwarze 3026: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3027: ln, ppos, "TE");
1.193 schwarze 3028: return ROFF_IGN;
3029: }
3030: if (tbl_end(r->tbl) == 0) {
3031: r->tbl = NULL;
1.130 schwarze 3032: free(buf->buf);
3033: buf->buf = mandoc_strdup(".sp");
3034: buf->sz = 4;
1.201 schwarze 3035: *offs = 0;
1.149 schwarze 3036: return ROFF_REPARSE;
1.130 schwarze 3037: }
1.193 schwarze 3038: r->tbl = NULL;
1.149 schwarze 3039: return ROFF_IGN;
1.27 schwarze 3040: }
3041:
1.212 schwarze 3042: static int
1.27 schwarze 3043: roff_T_(ROFF_ARGS)
3044: {
3045:
3046: if (NULL == r->tbl)
1.94 schwarze 3047: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3048: ln, ppos, "T&");
1.27 schwarze 3049: else
1.168 schwarze 3050: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 3051:
1.149 schwarze 3052: return ROFF_IGN;
1.27 schwarze 3053: }
3054:
1.102 schwarze 3055: /*
3056: * Handle in-line equation delimiters.
3057: */
1.212 schwarze 3058: static int
1.110 schwarze 3059: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 3060: {
1.105 schwarze 3061: char *cp1, *cp2;
3062: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 3063:
1.102 schwarze 3064: /*
3065: * Outside equations, look for an opening delimiter.
3066: * If we are inside an equation, we already know it is
3067: * in-line, or this function wouldn't have been called;
3068: * so look for a closing delimiter.
3069: */
3070:
1.110 schwarze 3071: cp1 = buf->buf + pos;
1.102 schwarze 3072: cp2 = strchr(cp1, r->eqn == NULL ?
3073: r->last_eqn->odelim : r->last_eqn->cdelim);
3074: if (cp2 == NULL)
1.149 schwarze 3075: return ROFF_CONT;
1.102 schwarze 3076:
1.105 schwarze 3077: *cp2++ = '\0';
3078: bef_pr = bef_nl = aft_nl = aft_pr = "";
3079:
3080: /* Handle preceding text, protecting whitespace. */
3081:
1.110 schwarze 3082: if (*buf->buf != '\0') {
1.105 schwarze 3083: if (r->eqn == NULL)
3084: bef_pr = "\\&";
3085: bef_nl = "\n";
3086: }
3087:
3088: /*
3089: * Prepare replacing the delimiter with an equation macro
3090: * and drop leading white space from the equation.
3091: */
1.102 schwarze 3092:
1.105 schwarze 3093: if (r->eqn == NULL) {
3094: while (*cp2 == ' ')
3095: cp2++;
3096: mac = ".EQ";
3097: } else
3098: mac = ".EN";
3099:
3100: /* Handle following text, protecting whitespace. */
3101:
3102: if (*cp2 != '\0') {
3103: aft_nl = "\n";
3104: if (r->eqn != NULL)
3105: aft_pr = "\\&";
3106: }
3107:
3108: /* Do the actual replacement. */
3109:
1.110 schwarze 3110: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 3111: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 3112: free(buf->buf);
3113: buf->buf = cp1;
1.102 schwarze 3114:
3115: /* Toggle the in-line state of the eqn subsystem. */
3116:
3117: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 3118: return ROFF_REPARSE;
1.41 schwarze 3119: }
3120:
1.212 schwarze 3121: static int
1.107 schwarze 3122: roff_EQ(ROFF_ARGS)
1.32 schwarze 3123: {
1.191 schwarze 3124: struct roff_node *n;
3125:
1.194 schwarze 3126: if (r->man->macroset == MACROSET_MAN)
3127: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 3128: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3129: if (ln > r->man->last->line)
3130: n->flags |= NODE_LINE;
3131: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
3132: n->eqn->expectargs = UINT_MAX;
3133: roff_node_append(r->man, n);
3134: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 3135:
1.110 schwarze 3136: assert(r->eqn == NULL);
1.191 schwarze 3137: if (r->last_eqn == NULL)
3138: r->last_eqn = eqn_alloc(r->parse);
3139: else
3140: eqn_reset(r->last_eqn);
3141: r->eqn = r->last_eqn;
3142: r->eqn->node = n;
1.41 schwarze 3143:
1.110 schwarze 3144: if (buf->buf[pos] != '\0')
1.107 schwarze 3145: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 3146: ".EQ %s", buf->buf + pos);
1.41 schwarze 3147:
1.149 schwarze 3148: return ROFF_IGN;
1.32 schwarze 3149: }
3150:
1.212 schwarze 3151: static int
1.32 schwarze 3152: roff_EN(ROFF_ARGS)
3153: {
1.191 schwarze 3154: if (r->eqn != NULL) {
3155: eqn_parse(r->eqn);
3156: r->eqn = NULL;
3157: } else
3158: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
3159: if (buf->buf[pos] != '\0')
3160: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3161: "EN %s", buf->buf + pos);
1.149 schwarze 3162: return ROFF_IGN;
1.32 schwarze 3163: }
3164:
1.212 schwarze 3165: static int
1.27 schwarze 3166: roff_TS(ROFF_ARGS)
3167: {
1.193 schwarze 3168: if (r->tbl != NULL) {
1.94 schwarze 3169: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
3170: ln, ppos, "TS breaks TS");
1.193 schwarze 3171: tbl_end(r->tbl);
1.27 schwarze 3172: }
1.193 schwarze 3173: r->tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 3174: if (r->last_tbl)
1.193 schwarze 3175: r->last_tbl->next = r->tbl;
1.27 schwarze 3176: else
1.193 schwarze 3177: r->first_tbl = r->tbl;
3178: r->last_tbl = r->tbl;
1.169 schwarze 3179: return ROFF_IGN;
3180: }
3181:
1.212 schwarze 3182: static int
1.169 schwarze 3183: roff_onearg(ROFF_ARGS)
3184: {
3185: struct roff_node *n;
3186: char *cp;
1.177 schwarze 3187: int npos;
1.169 schwarze 3188:
1.174 schwarze 3189: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 3190: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3191: tok == ROFF_ti))
1.174 schwarze 3192: man_breakscope(r->man, tok);
3193:
1.181 schwarze 3194: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 3195: r->man->last = roffce_node;
3196: r->man->next = ROFF_NEXT_SIBLING;
3197: }
3198:
1.169 schwarze 3199: roff_elem_alloc(r->man, ln, ppos, tok);
3200: n = r->man->last;
3201:
3202: cp = buf->buf + pos;
3203: if (*cp != '\0') {
3204: while (*cp != '\0' && *cp != ' ')
3205: cp++;
3206: while (*cp == ' ')
3207: *cp++ = '\0';
3208: if (*cp != '\0')
3209: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
3210: r->parse, ln, cp - buf->buf,
3211: "%s ... %s", roff_name[tok], cp);
3212: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 3213: }
3214:
1.181 schwarze 3215: if (tok == ROFF_ce || tok == ROFF_rj) {
3216: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 3217: roff_word_alloc(r->man, ln, pos, "1");
3218: r->man->last->flags |= NODE_NOSRC;
3219: }
3220: npos = 0;
3221: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3222: &roffce_lines, 0) == 0) {
3223: mandoc_vmsg(MANDOCERR_CE_NONUM,
3224: r->parse, ln, pos, "ce %s", buf->buf + pos);
3225: roffce_lines = 1;
3226: }
3227: if (roffce_lines < 1) {
3228: r->man->last = r->man->last->parent;
3229: roffce_node = NULL;
3230: roffce_lines = 0;
3231: } else
3232: roffce_node = r->man->last->parent;
3233: } else {
3234: n->flags |= NODE_VALID | NODE_ENDED;
3235: r->man->last = n;
3236: }
3237: n->flags |= NODE_LINE;
1.172 schwarze 3238: r->man->next = ROFF_NEXT_SIBLING;
3239: return ROFF_IGN;
3240: }
3241:
1.212 schwarze 3242: static int
1.172 schwarze 3243: roff_manyarg(ROFF_ARGS)
3244: {
3245: struct roff_node *n;
3246: char *sp, *ep;
3247:
3248: roff_elem_alloc(r->man, ln, ppos, tok);
3249: n = r->man->last;
3250:
3251: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3252: while (*ep != '\0' && *ep != ' ')
3253: ep++;
3254: while (*ep == ' ')
3255: *ep++ = '\0';
3256: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3257: }
3258:
3259: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3260: r->man->last = n;
3261: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3262: return ROFF_IGN;
1.123 schwarze 3263: }
3264:
1.212 schwarze 3265: static int
1.183 schwarze 3266: roff_als(ROFF_ARGS)
3267: {
3268: char *oldn, *newn, *end, *value;
3269: size_t oldsz, newsz, valsz;
3270:
3271: newn = oldn = buf->buf + pos;
3272: if (*newn == '\0')
3273: return ROFF_IGN;
3274:
3275: newsz = roff_getname(r, &oldn, ln, pos);
3276: if (newn[newsz] == '\\' || *oldn == '\0')
3277: return ROFF_IGN;
3278:
3279: end = oldn;
3280: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3281: if (oldsz == 0)
3282: return ROFF_IGN;
3283:
1.210 schwarze 3284: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.187 schwarze 3285: (int)oldsz, oldn);
1.183 schwarze 3286: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3287: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3288: free(value);
3289: return ROFF_IGN;
3290: }
3291:
1.212 schwarze 3292: static int
1.168 schwarze 3293: roff_br(ROFF_ARGS)
1.123 schwarze 3294: {
1.174 schwarze 3295: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3296: man_breakscope(r->man, ROFF_br);
1.168 schwarze 3297: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3298: if (buf->buf[pos] != '\0')
3299: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3300: "%s %s", roff_name[tok], buf->buf + pos);
3301: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3302: r->man->next = ROFF_NEXT_SIBLING;
3303: return ROFF_IGN;
1.27 schwarze 3304: }
3305:
1.212 schwarze 3306: static int
1.48 schwarze 3307: roff_cc(ROFF_ARGS)
3308: {
3309: const char *p;
3310:
1.110 schwarze 3311: p = buf->buf + pos;
1.48 schwarze 3312:
1.110 schwarze 3313: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3314: r->control = '\0';
1.48 schwarze 3315:
1.110 schwarze 3316: if (*p != '\0')
1.132 schwarze 3317: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3318: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3319:
1.213 ! schwarze 3320: return ROFF_IGN;
! 3321: }
! 3322:
! 3323: static int
! 3324: roff_char(ROFF_ARGS)
! 3325: {
! 3326: const char *p, *kp, *vp;
! 3327: size_t ksz, vsz;
! 3328: int font;
! 3329:
! 3330: /* Parse the character to be replaced. */
! 3331:
! 3332: kp = buf->buf + pos;
! 3333: p = kp + 1;
! 3334: if (*kp == '\0' || (*kp == '\\' &&
! 3335: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
! 3336: (*p != ' ' && *p != '\0')) {
! 3337: mandoc_vmsg(MANDOCERR_CHAR_ARG, r->parse,
! 3338: ln, pos, "char %s", kp);
! 3339: return ROFF_IGN;
! 3340: }
! 3341: ksz = p - kp;
! 3342: while (*p == ' ')
! 3343: p++;
! 3344:
! 3345: /*
! 3346: * If the replacement string contains a font escape sequence,
! 3347: * we have to restore the font at the end.
! 3348: */
! 3349:
! 3350: vp = p;
! 3351: vsz = strlen(p);
! 3352: font = 0;
! 3353: while (*p != '\0') {
! 3354: if (*p++ != '\\')
! 3355: continue;
! 3356: switch (mandoc_escape(&p, NULL, NULL)) {
! 3357: case ESCAPE_FONT:
! 3358: case ESCAPE_FONTROMAN:
! 3359: case ESCAPE_FONTITALIC:
! 3360: case ESCAPE_FONTBOLD:
! 3361: case ESCAPE_FONTBI:
! 3362: case ESCAPE_FONTPREV:
! 3363: font++;
! 3364: break;
! 3365: default:
! 3366: break;
! 3367: }
! 3368: }
! 3369: if (font > 1)
! 3370: mandoc_msg(MANDOCERR_CHAR_FONT, r->parse,
! 3371: ln, vp - buf->buf, vp);
! 3372:
! 3373: /*
! 3374: * Approximate the effect of .char using the .tr tables.
! 3375: * XXX In groff, .char and .tr interact differently.
! 3376: */
! 3377:
! 3378: if (ksz == 1) {
! 3379: if (r->xtab == NULL)
! 3380: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
! 3381: assert((unsigned int)*kp < 128);
! 3382: free(r->xtab[(int)*kp].p);
! 3383: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
! 3384: "%s%s", vp, font ? "\fP" : "");
! 3385: } else {
! 3386: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
! 3387: if (font)
! 3388: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
! 3389: }
1.149 schwarze 3390: return ROFF_IGN;
1.48 schwarze 3391: }
3392:
1.212 schwarze 3393: static int
1.175 schwarze 3394: roff_ec(ROFF_ARGS)
3395: {
3396: const char *p;
3397:
3398: p = buf->buf + pos;
3399: if (*p == '\0')
3400: r->escape = '\\';
3401: else {
3402: r->escape = *p;
3403: if (*++p != '\0')
3404: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3405: ln, p - buf->buf, "ec ... %s", p);
3406: }
3407: return ROFF_IGN;
3408: }
3409:
1.212 schwarze 3410: static int
1.175 schwarze 3411: roff_eo(ROFF_ARGS)
3412: {
3413: r->escape = '\0';
3414: if (buf->buf[pos] != '\0')
3415: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3416: ln, pos, "eo %s", buf->buf + pos);
3417: return ROFF_IGN;
1.202 schwarze 3418: }
3419:
1.212 schwarze 3420: static int
1.202 schwarze 3421: roff_nop(ROFF_ARGS)
3422: {
3423: while (buf->buf[pos] == ' ')
3424: pos++;
3425: *offs = pos;
3426: return ROFF_RERUN;
1.175 schwarze 3427: }
3428:
1.212 schwarze 3429: static int
1.42 schwarze 3430: roff_tr(ROFF_ARGS)
3431: {
3432: const char *p, *first, *second;
3433: size_t fsz, ssz;
3434: enum mandoc_esc esc;
3435:
1.110 schwarze 3436: p = buf->buf + pos;
1.42 schwarze 3437:
1.110 schwarze 3438: if (*p == '\0') {
1.132 schwarze 3439: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 3440: return ROFF_IGN;
1.42 schwarze 3441: }
3442:
1.110 schwarze 3443: while (*p != '\0') {
1.42 schwarze 3444: fsz = ssz = 1;
3445:
3446: first = p++;
1.110 schwarze 3447: if (*first == '\\') {
1.42 schwarze 3448: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3449: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3450: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3451: ln, (int)(p - buf->buf), first);
1.149 schwarze 3452: return ROFF_IGN;
1.42 schwarze 3453: }
3454: fsz = (size_t)(p - first);
3455: }
3456:
3457: second = p++;
1.110 schwarze 3458: if (*second == '\\') {
1.42 schwarze 3459: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3460: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3461: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3462: ln, (int)(p - buf->buf), second);
1.149 schwarze 3463: return ROFF_IGN;
1.42 schwarze 3464: }
3465: ssz = (size_t)(p - second);
1.110 schwarze 3466: } else if (*second == '\0') {
1.132 schwarze 3467: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3468: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3469: second = " ";
3470: p--;
3471: }
3472:
3473: if (fsz > 1) {
1.80 schwarze 3474: roff_setstrn(&r->xmbtab, first, fsz,
3475: second, ssz, 0);
1.42 schwarze 3476: continue;
3477: }
3478:
1.110 schwarze 3479: if (r->xtab == NULL)
1.80 schwarze 3480: r->xtab = mandoc_calloc(128,
3481: sizeof(struct roffstr));
1.42 schwarze 3482:
3483: free(r->xtab[(int)*first].p);
3484: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3485: r->xtab[(int)*first].sz = ssz;
3486: }
3487:
1.149 schwarze 3488: return ROFF_IGN;
1.42 schwarze 3489: }
3490:
1.211 schwarze 3491: /*
3492: * Implementation of the .return request.
3493: * There is no need to call roff_userret() from here.
3494: * The read module will call that after rewinding the reader stack
3495: * to the place from where the current macro was called.
3496: */
1.212 schwarze 3497: static int
1.211 schwarze 3498: roff_return(ROFF_ARGS)
3499: {
3500: if (r->mstackpos >= 0)
1.212 schwarze 3501: return ROFF_IGN | ROFF_USERRET;
1.211 schwarze 3502:
3503: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "return");
3504: return ROFF_IGN;
3505: }
3506:
1.212 schwarze 3507: static int
1.178 schwarze 3508: roff_rn(ROFF_ARGS)
3509: {
3510: const char *value;
3511: char *oldn, *newn, *end;
3512: size_t oldsz, newsz;
1.187 schwarze 3513: int deftype;
1.178 schwarze 3514:
3515: oldn = newn = buf->buf + pos;
3516: if (*oldn == '\0')
3517: return ROFF_IGN;
3518:
3519: oldsz = roff_getname(r, &newn, ln, pos);
3520: if (oldn[oldsz] == '\\' || *newn == '\0')
3521: return ROFF_IGN;
3522:
3523: end = newn;
3524: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3525: if (newsz == 0)
3526: return ROFF_IGN;
3527:
1.187 schwarze 3528: deftype = ROFFDEF_ANY;
3529: value = roff_getstrn(r, oldn, oldsz, &deftype);
3530: switch (deftype) {
3531: case ROFFDEF_USER:
1.178 schwarze 3532: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3533: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3534: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3535: break;
3536: case ROFFDEF_PRE:
3537: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3538: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3539: break;
3540: case ROFFDEF_REN:
1.178 schwarze 3541: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3542: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3543: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3544: break;
3545: case ROFFDEF_STD:
1.178 schwarze 3546: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3547: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3548: break;
3549: default:
3550: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3551: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3552: break;
3553: }
1.178 schwarze 3554: return ROFF_IGN;
3555: }
3556:
1.212 schwarze 3557: static int
1.211 schwarze 3558: roff_shift(ROFF_ARGS)
3559: {
3560: struct mctx *ctx;
3561: int levels, i;
3562:
3563: levels = 1;
3564: if (buf->buf[pos] != '\0' &&
3565: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
3566: mandoc_vmsg(MANDOCERR_CE_NONUM, r->parse,
3567: ln, pos, "shift %s", buf->buf + pos);
3568: levels = 1;
3569: }
3570: if (r->mstackpos < 0) {
3571: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "shift");
3572: return ROFF_IGN;
3573: }
3574: ctx = r->mstack + r->mstackpos;
3575: if (levels > ctx->argc) {
3576: mandoc_vmsg(MANDOCERR_SHIFT, r->parse,
3577: ln, pos, "%d, but max is %d", levels, ctx->argc);
3578: levels = ctx->argc;
3579: }
3580: if (levels == 0)
3581: return ROFF_IGN;
3582: for (i = 0; i < levels; i++)
3583: free(ctx->argv[i]);
3584: ctx->argc -= levels;
3585: for (i = 0; i < ctx->argc; i++)
3586: ctx->argv[i] = ctx->argv[i + levels];
3587: return ROFF_IGN;
3588: }
3589:
1.212 schwarze 3590: static int
1.14 schwarze 3591: roff_so(ROFF_ARGS)
3592: {
1.121 schwarze 3593: char *name, *cp;
1.15 schwarze 3594:
1.110 schwarze 3595: name = buf->buf + pos;
1.97 schwarze 3596: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3597:
1.22 schwarze 3598: /*
3599: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3600: * opening anything that's not in our cwd or anything beneath
3601: * it. Thus, explicitly disallow traversing up the file-system
3602: * or using absolute paths.
3603: */
3604:
1.110 schwarze 3605: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3606: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3607: ".so %s", name);
1.121 schwarze 3608: buf->sz = mandoc_asprintf(&cp,
3609: ".sp\nSee the file %s.\n.sp", name) + 1;
3610: free(buf->buf);
3611: buf->buf = cp;
3612: *offs = 0;
1.149 schwarze 3613: return ROFF_REPARSE;
1.14 schwarze 3614: }
3615:
3616: *offs = pos;
1.149 schwarze 3617: return ROFF_SO;
1.7 schwarze 3618: }
3619:
1.138 schwarze 3620: /* --- user defined strings and macros ------------------------------------ */
3621:
1.212 schwarze 3622: static int
1.16 schwarze 3623: roff_userdef(ROFF_ARGS)
1.12 schwarze 3624: {
1.211 schwarze 3625: struct mctx *ctx;
3626: char *arg, *ap, *dst, *src;
3627: size_t sz;
3628:
3629: /* Initialize a new macro stack context. */
3630:
3631: if (++r->mstackpos == r->mstacksz) {
3632: r->mstack = mandoc_recallocarray(r->mstack,
3633: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3634: r->mstacksz += 8;
3635: }
3636: ctx = r->mstack + r->mstackpos;
3637: ctx->argsz = 0;
3638: ctx->argc = 0;
3639: ctx->argv = NULL;
3640:
3641: /*
3642: * Collect pointers to macro argument strings,
3643: * NUL-terminating them and escaping quotes.
3644: */
3645:
3646: src = buf->buf + pos;
3647: while (*src != '\0') {
3648: if (ctx->argc == ctx->argsz) {
3649: ctx->argsz += 8;
3650: ctx->argv = mandoc_reallocarray(ctx->argv,
3651: ctx->argsz, sizeof(*ctx->argv));
3652: }
3653: arg = mandoc_getarg(r->parse, &src, ln, &pos);
3654: sz = 1; /* For the terminating NUL. */
3655: for (ap = arg; *ap != '\0'; ap++)
3656: sz += *ap == '"' ? 4 : 1;
3657: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3658: for (ap = arg; *ap != '\0'; ap++) {
3659: if (*ap == '"') {
3660: memcpy(dst, "\\(dq", 4);
3661: dst += 4;
3662: } else
3663: *dst++ = *ap;
1.16 schwarze 3664: }
1.211 schwarze 3665: *dst = '\0';
1.209 schwarze 3666: }
3667:
1.211 schwarze 3668: /* Replace the macro invocation by the macro definition. */
1.135 schwarze 3669:
1.110 schwarze 3670: free(buf->buf);
1.211 schwarze 3671: buf->buf = mandoc_strdup(r->current_string);
3672: buf->sz = strlen(buf->buf) + 1;
1.120 schwarze 3673: *offs = 0;
1.16 schwarze 3674:
1.149 schwarze 3675: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.212 schwarze 3676: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.12 schwarze 3677: }
1.28 schwarze 3678:
1.178 schwarze 3679: /*
3680: * Calling a high-level macro that was renamed with .rn.
3681: * r->current_string has already been set up by roff_parse().
3682: */
1.212 schwarze 3683: static int
1.178 schwarze 3684: roff_renamed(ROFF_ARGS)
3685: {
3686: char *nbuf;
3687:
1.187 schwarze 3688: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3689: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3690: free(buf->buf);
3691: buf->buf = nbuf;
1.201 schwarze 3692: *offs = 0;
1.178 schwarze 3693: return ROFF_CONT;
3694: }
3695:
1.85 schwarze 3696: static size_t
1.28 schwarze 3697: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3698: {
3699: char *name, *cp;
1.85 schwarze 3700: size_t namesz;
1.28 schwarze 3701:
3702: name = *cpp;
3703: if ('\0' == *name)
1.149 schwarze 3704: return 0;
1.28 schwarze 3705:
1.85 schwarze 3706: /* Read until end of name and terminate it with NUL. */
3707: for (cp = name; 1; cp++) {
3708: if ('\0' == *cp || ' ' == *cp) {
3709: namesz = cp - name;
3710: break;
3711: }
1.28 schwarze 3712: if ('\\' != *cp)
3713: continue;
1.88 schwarze 3714: namesz = cp - name;
3715: if ('{' == cp[1] || '}' == cp[1])
3716: break;
1.28 schwarze 3717: cp++;
3718: if ('\\' == *cp)
3719: continue;
1.97 schwarze 3720: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3721: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3722: mandoc_escape((const char **)&cp, NULL, NULL);
3723: break;
1.28 schwarze 3724: }
3725:
3726: /* Read past spaces. */
3727: while (' ' == *cp)
3728: cp++;
3729:
3730: *cpp = cp;
1.149 schwarze 3731: return namesz;
1.28 schwarze 3732: }
3733:
1.16 schwarze 3734: /*
3735: * Store *string into the user-defined string called *name.
3736: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3737: * append == 0: replace mode
3738: * append == 1: single-line append mode
3739: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3740: */
1.8 schwarze 3741: static void
1.16 schwarze 3742: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3743: int append)
1.7 schwarze 3744: {
1.187 schwarze 3745: size_t namesz;
1.42 schwarze 3746:
1.187 schwarze 3747: namesz = strlen(name);
3748: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3749: string ? strlen(string) : 0, append);
1.187 schwarze 3750: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3751: }
3752:
3753: static void
3754: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3755: const char *string, size_t stringsz, int append)
1.42 schwarze 3756: {
3757: struct roffkv *n;
3758: char *c;
3759: int i;
3760: size_t oldch, newch;
1.7 schwarze 3761:
1.16 schwarze 3762: /* Search for an existing string with the same name. */
1.42 schwarze 3763: n = *r;
3764:
1.84 schwarze 3765: while (n && (namesz != n->key.sz ||
3766: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3767: n = n->next;
1.8 schwarze 3768:
3769: if (NULL == n) {
1.16 schwarze 3770: /* Create a new string table entry. */
1.42 schwarze 3771: n = mandoc_malloc(sizeof(struct roffkv));
3772: n->key.p = mandoc_strndup(name, namesz);
3773: n->key.sz = namesz;
3774: n->val.p = NULL;
3775: n->val.sz = 0;
3776: n->next = *r;
3777: *r = n;
1.66 schwarze 3778: } else if (0 == append) {
1.42 schwarze 3779: free(n->val.p);
3780: n->val.p = NULL;
3781: n->val.sz = 0;
1.16 schwarze 3782: }
3783:
3784: if (NULL == string)
3785: return;
3786:
3787: /*
3788: * One additional byte for the '\n' in multiline mode,
3789: * and one for the terminating '\0'.
3790: */
1.66 schwarze 3791: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3792:
3793: if (NULL == n->val.p) {
3794: n->val.p = mandoc_malloc(newch);
3795: *n->val.p = '\0';
1.16 schwarze 3796: oldch = 0;
3797: } else {
1.42 schwarze 3798: oldch = n->val.sz;
3799: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3800: }
3801:
3802: /* Skip existing content in the destination buffer. */
1.42 schwarze 3803: c = n->val.p + (int)oldch;
1.16 schwarze 3804:
3805: /* Append new content to the destination buffer. */
1.42 schwarze 3806: i = 0;
3807: while (i < (int)stringsz) {
1.16 schwarze 3808: /*
3809: * Rudimentary roff copy mode:
3810: * Handle escaped backslashes.
3811: */
1.42 schwarze 3812: if ('\\' == string[i] && '\\' == string[i + 1])
3813: i++;
3814: *c++ = string[i++];
1.16 schwarze 3815: }
1.8 schwarze 3816:
1.16 schwarze 3817: /* Append terminating bytes. */
1.66 schwarze 3818: if (1 < append)
1.16 schwarze 3819: *c++ = '\n';
1.42 schwarze 3820:
1.16 schwarze 3821: *c = '\0';
1.42 schwarze 3822: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3823: }
3824:
1.8 schwarze 3825: static const char *
1.197 schwarze 3826: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 3827: int *deftype)
1.7 schwarze 3828: {
1.187 schwarze 3829: const struct roffkv *n;
1.197 schwarze 3830: int found, i;
1.187 schwarze 3831: enum roff_tok tok;
3832:
1.197 schwarze 3833: found = 0;
3834: for (n = r->strtab; n != NULL; n = n->next) {
3835: if (strncmp(name, n->key.p, len) != 0 ||
3836: n->key.p[len] != '\0' || n->val.p == NULL)
3837: continue;
3838: if (*deftype & ROFFDEF_USER) {
3839: *deftype = ROFFDEF_USER;
3840: return n->val.p;
3841: } else {
3842: found = 1;
3843: break;
3844: }
3845: }
3846: for (n = r->rentab; n != NULL; n = n->next) {
3847: if (strncmp(name, n->key.p, len) != 0 ||
3848: n->key.p[len] != '\0' || n->val.p == NULL)
3849: continue;
3850: if (*deftype & ROFFDEF_REN) {
3851: *deftype = ROFFDEF_REN;
3852: return n->val.p;
3853: } else {
3854: found = 1;
3855: break;
1.187 schwarze 3856: }
3857: }
1.197 schwarze 3858: for (i = 0; i < PREDEFS_MAX; i++) {
3859: if (strncmp(name, predefs[i].name, len) != 0 ||
3860: predefs[i].name[len] != '\0')
3861: continue;
3862: if (*deftype & ROFFDEF_PRE) {
3863: *deftype = ROFFDEF_PRE;
3864: return predefs[i].str;
3865: } else {
3866: found = 1;
3867: break;
1.187 schwarze 3868: }
3869: }
1.197 schwarze 3870: if (r->man->macroset != MACROSET_MAN) {
3871: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3872: if (strncmp(name, roff_name[tok], len) != 0 ||
3873: roff_name[tok][len] != '\0')
3874: continue;
3875: if (*deftype & ROFFDEF_STD) {
3876: *deftype = ROFFDEF_STD;
3877: return NULL;
3878: } else {
3879: found = 1;
3880: break;
1.187 schwarze 3881: }
3882: }
3883: }
1.197 schwarze 3884: if (r->man->macroset != MACROSET_MDOC) {
3885: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3886: if (strncmp(name, roff_name[tok], len) != 0 ||
3887: roff_name[tok][len] != '\0')
3888: continue;
3889: if (*deftype & ROFFDEF_STD) {
3890: *deftype = ROFFDEF_STD;
3891: return NULL;
3892: } else {
3893: found = 1;
3894: break;
1.187 schwarze 3895: }
3896: }
1.197 schwarze 3897: }
3898:
3899: if (found == 0 && *deftype != ROFFDEF_ANY) {
3900: if (*deftype & ROFFDEF_REN) {
3901: /*
3902: * This might still be a request,
3903: * so do not treat it as undefined yet.
3904: */
3905: *deftype = ROFFDEF_UNDEF;
3906: return NULL;
1.187 schwarze 3907: }
1.197 schwarze 3908:
3909: /* Using an undefined string defines it to be empty. */
3910:
3911: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3912: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 3913: }
1.197 schwarze 3914:
1.187 schwarze 3915: *deftype = 0;
1.149 schwarze 3916: return NULL;
1.7 schwarze 3917: }
3918:
1.8 schwarze 3919: static void
1.42 schwarze 3920: roff_freestr(struct roffkv *r)
1.7 schwarze 3921: {
1.42 schwarze 3922: struct roffkv *n, *nn;
1.7 schwarze 3923:
1.42 schwarze 3924: for (n = r; n; n = nn) {
3925: free(n->key.p);
3926: free(n->val.p);
1.7 schwarze 3927: nn = n->next;
3928: free(n);
3929: }
1.27 schwarze 3930: }
1.138 schwarze 3931:
3932: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 3933:
3934: /*
3935: * Duplicate an input string, making the appropriate character
3936: * conversations (as stipulated by `tr') along the way.
3937: * Returns a heap-allocated string with all the replacements made.
3938: */
3939: char *
3940: roff_strdup(const struct roff *r, const char *p)
3941: {
3942: const struct roffkv *cp;
3943: char *res;
3944: const char *pp;
3945: size_t ssz, sz;
3946: enum mandoc_esc esc;
3947:
3948: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3949: return mandoc_strdup(p);
1.42 schwarze 3950: else if ('\0' == *p)
1.149 schwarze 3951: return mandoc_strdup("");
1.42 schwarze 3952:
3953: /*
3954: * Step through each character looking for term matches
3955: * (remember that a `tr' can be invoked with an escape, which is
3956: * a glyph but the escape is multi-character).
3957: * We only do this if the character hash has been initialised
3958: * and the string is >0 length.
3959: */
3960:
3961: res = NULL;
3962: ssz = 0;
3963:
3964: while ('\0' != *p) {
1.161 schwarze 3965: assert((unsigned int)*p < 128);
3966: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3967: sz = r->xtab[(int)*p].sz;
3968: res = mandoc_realloc(res, ssz + sz + 1);
3969: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3970: ssz += sz;
3971: p++;
3972: continue;
3973: } else if ('\\' != *p) {
3974: res = mandoc_realloc(res, ssz + 2);
3975: res[ssz++] = *p++;
3976: continue;
3977: }
3978:
3979: /* Search for term matches. */
3980: for (cp = r->xmbtab; cp; cp = cp->next)
3981: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3982: break;
3983:
3984: if (NULL != cp) {
3985: /*
3986: * A match has been found.
3987: * Append the match to the array and move
3988: * forward by its keysize.
3989: */
1.80 schwarze 3990: res = mandoc_realloc(res,
3991: ssz + cp->val.sz + 1);
1.42 schwarze 3992: memcpy(res + ssz, cp->val.p, cp->val.sz);
3993: ssz += cp->val.sz;
3994: p += (int)cp->key.sz;
3995: continue;
3996: }
3997:
3998: /*
3999: * Handle escapes carefully: we need to copy
4000: * over just the escape itself, or else we might
4001: * do replacements within the escape itself.
4002: * Make sure to pass along the bogus string.
4003: */
4004: pp = p++;
4005: esc = mandoc_escape(&p, NULL, NULL);
4006: if (ESCAPE_ERROR == esc) {
4007: sz = strlen(pp);
4008: res = mandoc_realloc(res, ssz + sz + 1);
4009: memcpy(res + ssz, pp, sz);
4010: break;
4011: }
1.80 schwarze 4012: /*
4013: * We bail out on bad escapes.
1.42 schwarze 4014: * No need to warn: we already did so when
4015: * roff_res() was called.
4016: */
4017: sz = (int)(p - pp);
4018: res = mandoc_realloc(res, ssz + sz + 1);
4019: memcpy(res + ssz, pp, sz);
4020: ssz += sz;
4021: }
4022:
4023: res[(int)ssz] = '\0';
1.149 schwarze 4024: return res;
1.99 schwarze 4025: }
4026:
4027: int
4028: roff_getformat(const struct roff *r)
4029: {
4030:
1.149 schwarze 4031: return r->format;
1.48 schwarze 4032: }
4033:
4034: /*
1.80 schwarze 4035: * Find out whether a line is a macro line or not.
1.48 schwarze 4036: * If it is, adjust the current position and return one; if it isn't,
4037: * return zero and don't change the current position.
4038: * If the control character has been set with `.cc', then let that grain
4039: * precedence.
4040: * This is slighly contrary to groff, where using the non-breaking
4041: * control character when `cc' has been invoked will cause the
4042: * non-breaking macro contents to be printed verbatim.
4043: */
4044: int
4045: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4046: {
4047: int pos;
4048:
4049: pos = *ppos;
4050:
1.175 schwarze 4051: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 4052: pos++;
1.175 schwarze 4053: else if (r->control != '\0')
1.149 schwarze 4054: return 0;
1.48 schwarze 4055: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4056: pos += 2;
4057: else if ('.' == cp[pos] || '\'' == cp[pos])
4058: pos++;
4059: else
1.149 schwarze 4060: return 0;
1.48 schwarze 4061:
4062: while (' ' == cp[pos] || '\t' == cp[pos])
4063: pos++;
4064:
4065: *ppos = pos;
1.149 schwarze 4066: return 1;
1.1 schwarze 4067: }
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