Annotation of src/usr.bin/mandoc/roff.c, Revision 1.216
1.216 ! schwarze 1: /* $OpenBSD: roff.c,v 1.215 2018/11/26 17:44:29 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;
1.216 ! schwarze 1065: }
! 1066:
! 1067: void
! 1068: roff_node_relink(struct roff_man *man, struct roff_node *n)
! 1069: {
! 1070: roff_node_unlink(man, n);
! 1071: n->prev = n->next = NULL;
! 1072: roff_node_append(man, n);
1.138 schwarze 1073: }
1074:
1075: void
1076: roff_node_free(struct roff_node *n)
1077: {
1078:
1079: if (n->args != NULL)
1080: mdoc_argv_free(n->args);
1081: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1082: free(n->norm);
1.191 schwarze 1083: if (n->eqn != NULL)
1084: eqn_box_free(n->eqn);
1.138 schwarze 1085: free(n->string);
1086: free(n);
1087: }
1088:
1089: void
1090: roff_node_delete(struct roff_man *man, struct roff_node *n)
1091: {
1092:
1093: while (n->child != NULL)
1094: roff_node_delete(man, n->child);
1095: roff_node_unlink(man, n);
1096: roff_node_free(n);
1.141 schwarze 1097: }
1098:
1099: void
1100: deroff(char **dest, const struct roff_node *n)
1101: {
1102: char *cp;
1103: size_t sz;
1104:
1105: if (n->type != ROFFT_TEXT) {
1106: for (n = n->child; n != NULL; n = n->next)
1107: deroff(dest, n);
1108: return;
1109: }
1110:
1.160 schwarze 1111: /* Skip leading whitespace. */
1.141 schwarze 1112:
1.160 schwarze 1113: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1114: if (cp[0] == '\\' && cp[1] != '\0' &&
1115: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1116: cp++;
1.160 schwarze 1117: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1118: break;
1119: }
1120:
1.161 schwarze 1121: /* Skip trailing backslash. */
1122:
1123: sz = strlen(cp);
1.162 schwarze 1124: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1125: sz--;
1126:
1.141 schwarze 1127: /* Skip trailing whitespace. */
1128:
1.161 schwarze 1129: for (; sz; sz--)
1.141 schwarze 1130: if ( ! isspace((unsigned char)cp[sz-1]))
1131: break;
1132:
1133: /* Skip empty strings. */
1134:
1135: if (sz == 0)
1136: return;
1137:
1138: if (*dest == NULL) {
1139: *dest = mandoc_strndup(cp, sz);
1140: return;
1141: }
1142:
1143: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1144: free(*dest);
1145: *dest = cp;
1.138 schwarze 1146: }
1147:
1148: /* --- main functions of the roff parser ---------------------------------- */
1149:
1.8 schwarze 1150: /*
1.79 schwarze 1151: * In the current line, expand escape sequences that tend to get
1152: * used in numerical expressions and conditional requests.
1153: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1154: */
1.212 schwarze 1155: static int
1.110 schwarze 1156: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1157: {
1.211 schwarze 1158: struct mctx *ctx; /* current macro call context */
1.81 schwarze 1159: char ubuf[24]; /* buffer to print the number */
1.200 schwarze 1160: struct roff_node *n; /* used for header comments */
1.78 schwarze 1161: const char *start; /* start of the string to process */
1.82 schwarze 1162: char *stesc; /* start of an escape sequence ('\\') */
1.200 schwarze 1163: char *ep; /* end of comment string */
1.23 schwarze 1164: const char *stnam; /* start of the name, after "[(*" */
1165: const char *cp; /* end of the name, e.g. before ']' */
1166: const char *res; /* the string to be substituted */
1.110 schwarze 1167: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1168: size_t maxl; /* expected length of the escape name */
1169: size_t naml; /* actual length of the escape name */
1.211 schwarze 1170: size_t asz; /* length of the replacement */
1171: size_t rsz; /* length of the rest of the string */
1.109 schwarze 1172: enum mandoc_esc esc; /* type of the escape sequence */
1173: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1174: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1175: int npos; /* position in numeric expression */
1.91 schwarze 1176: int arg_complete; /* argument not interrupted by eol */
1.211 schwarze 1177: int quote_args; /* true for \\$@, false for \\$* */
1.175 schwarze 1178: int done; /* no more input available */
1.187 schwarze 1179: int deftype; /* type of definition to paste */
1.195 schwarze 1180: int rcsid; /* kind of RCS id seen */
1.199 schwarze 1181: char sign; /* increment number register */
1.79 schwarze 1182: char term; /* character terminating the escape */
1.8 schwarze 1183:
1.175 schwarze 1184: /* Search forward for comments. */
1185:
1186: done = 0;
1187: start = buf->buf + pos;
1188: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1189: if (stesc[0] != r->escape || stesc[1] == '\0')
1190: continue;
1191: stesc++;
1192: if (*stesc != '"' && *stesc != '#')
1193: continue;
1.185 schwarze 1194:
1195: /* Comment found, look for RCS id. */
1196:
1.195 schwarze 1197: rcsid = 0;
1.185 schwarze 1198: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.195 schwarze 1199: rcsid = 1 << MANDOC_OS_OPENBSD;
1.185 schwarze 1200: cp += 8;
1201: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.195 schwarze 1202: rcsid = 1 << MANDOC_OS_NETBSD;
1.185 schwarze 1203: cp += 7;
1204: }
1205: if (cp != NULL &&
1206: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1207: strchr(cp, '$') != NULL) {
1.195 schwarze 1208: if (r->man->meta.rcsids & rcsid)
1.186 schwarze 1209: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1210: ln, stesc + 1 - buf->buf, stesc + 1);
1.195 schwarze 1211: r->man->meta.rcsids |= rcsid;
1.186 schwarze 1212: }
1.185 schwarze 1213:
1214: /* Handle trailing whitespace. */
1215:
1.200 schwarze 1216: ep = strchr(stesc--, '\0') - 1;
1217: if (*ep == '\n') {
1.175 schwarze 1218: done = 1;
1.200 schwarze 1219: ep--;
1.175 schwarze 1220: }
1.200 schwarze 1221: if (*ep == ' ' || *ep == '\t')
1.175 schwarze 1222: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1.200 schwarze 1223: ln, ep - buf->buf, NULL);
1224:
1225: /*
1226: * Save comments preceding the title macro
1227: * in the syntax tree.
1228: */
1229:
1230: if (r->format == 0) {
1231: while (*ep == ' ' || *ep == '\t')
1232: ep--;
1233: ep[1] = '\0';
1234: n = roff_node_alloc(r->man,
1235: ln, stesc + 1 - buf->buf,
1236: ROFFT_COMMENT, TOKEN_NONE);
1237: n->string = mandoc_strdup(stesc + 2);
1238: roff_node_append(r->man, n);
1239: n->flags |= NODE_VALID | NODE_ENDED;
1240: r->man->next = ROFF_NEXT_SIBLING;
1241: }
1242:
1.206 schwarze 1243: /* Line continuation with comment. */
1244:
1245: if (stesc[1] == '#') {
1246: *stesc = '\0';
1.212 schwarze 1247: return ROFF_IGN | ROFF_APPEND;
1.206 schwarze 1248: }
1249:
1250: /* Discard normal comments. */
1.200 schwarze 1251:
1.207 schwarze 1252: while (stesc > start && stesc[-1] == ' ' &&
1253: (stesc == start + 1 || stesc[-2] != '\\'))
1.175 schwarze 1254: stesc--;
1255: *stesc = '\0';
1256: break;
1257: }
1258: if (stesc == start)
1259: return ROFF_CONT;
1260: stesc--;
1261:
1262: /* Notice the end of the input. */
1263:
1264: if (*stesc == '\n') {
1265: *stesc-- = '\0';
1266: done = 1;
1267: }
1268:
1.43 schwarze 1269: expand_count = 0;
1.175 schwarze 1270: while (stesc >= start) {
1.43 schwarze 1271:
1.78 schwarze 1272: /* Search backwards for the next backslash. */
1273:
1.175 schwarze 1274: if (*stesc != r->escape) {
1275: if (*stesc == '\\') {
1276: *stesc = '\0';
1277: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1278: buf->buf, stesc + 1) + 1;
1279: start = nbuf + pos;
1280: stesc = nbuf + (stesc - buf->buf);
1281: free(buf->buf);
1282: buf->buf = nbuf;
1283: }
1284: stesc--;
1.78 schwarze 1285: continue;
1.175 schwarze 1286: }
1.78 schwarze 1287:
1288: /* If it is escaped, skip it. */
1289:
1290: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1291: if (*cp != r->escape)
1.78 schwarze 1292: break;
1293:
1.110 schwarze 1294: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1295: while (stesc > cp)
1296: *stesc-- = '\\';
1.78 schwarze 1297: continue;
1.175 schwarze 1298: } else if (stesc[1] != '\0') {
1299: *stesc = '\\';
1300: } else {
1301: *stesc-- = '\0';
1302: if (done)
1303: continue;
1304: else
1.212 schwarze 1305: return ROFF_IGN | ROFF_APPEND;
1.78 schwarze 1306: }
1.23 schwarze 1307:
1.79 schwarze 1308: /* Decide whether to expand or to check only. */
1.23 schwarze 1309:
1.79 schwarze 1310: term = '\0';
1.78 schwarze 1311: cp = stesc + 1;
1.53 schwarze 1312: switch (*cp) {
1.80 schwarze 1313: case '*':
1.211 schwarze 1314: case '$':
1.53 schwarze 1315: res = NULL;
1316: break;
1.80 schwarze 1317: case 'B':
1318: case 'w':
1.79 schwarze 1319: term = cp[1];
1320: /* FALLTHROUGH */
1.80 schwarze 1321: case 'n':
1.199 schwarze 1322: sign = cp[1];
1323: if (sign == '+' || sign == '-')
1324: cp++;
1.53 schwarze 1325: res = ubuf;
1326: break;
1327: default:
1.109 schwarze 1328: esc = mandoc_escape(&cp, &stnam, &inaml);
1329: if (esc == ESCAPE_ERROR ||
1330: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1331: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1332: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1333: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1334: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1335: stesc--;
1.78 schwarze 1336: continue;
1.42 schwarze 1337: }
1338:
1.78 schwarze 1339: if (EXPAND_LIMIT < ++expand_count) {
1340: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1341: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1342: return ROFF_IGN;
1.78 schwarze 1343: }
1.23 schwarze 1344:
1345: /*
1346: * The third character decides the length
1.53 schwarze 1347: * of the name of the string or register.
1.23 schwarze 1348: * Save a pointer to the name.
1349: */
1350:
1.110 schwarze 1351: if (term == '\0') {
1.79 schwarze 1352: switch (*++cp) {
1.80 schwarze 1353: case '\0':
1.79 schwarze 1354: maxl = 0;
1355: break;
1.80 schwarze 1356: case '(':
1.79 schwarze 1357: cp++;
1358: maxl = 2;
1359: break;
1.80 schwarze 1360: case '[':
1.79 schwarze 1361: cp++;
1362: term = ']';
1363: maxl = 0;
1364: break;
1365: default:
1366: maxl = 1;
1367: break;
1368: }
1369: } else {
1370: cp += 2;
1.8 schwarze 1371: maxl = 0;
1372: }
1.23 schwarze 1373: stnam = cp;
1.8 schwarze 1374:
1.23 schwarze 1375: /* Advance to the end of the name. */
1.8 schwarze 1376:
1.125 schwarze 1377: naml = 0;
1.91 schwarze 1378: arg_complete = 1;
1.125 schwarze 1379: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1380: if (*cp == '\0') {
1.92 schwarze 1381: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1382: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1383: arg_complete = 0;
1.79 schwarze 1384: break;
1.42 schwarze 1385: }
1.110 schwarze 1386: if (maxl == 0 && *cp == term) {
1.79 schwarze 1387: cp++;
1.125 schwarze 1388: break;
1389: }
1390: if (*cp++ != '\\' || stesc[1] != 'w') {
1391: naml++;
1392: continue;
1393: }
1394: switch (mandoc_escape(&cp, NULL, NULL)) {
1395: case ESCAPE_SPECIAL:
1396: case ESCAPE_UNICODE:
1397: case ESCAPE_NUMBERED:
1398: case ESCAPE_OVERSTRIKE:
1399: naml++;
1400: break;
1401: default:
1.8 schwarze 1402: break;
1.79 schwarze 1403: }
1.8 schwarze 1404: }
1405:
1.23 schwarze 1406: /*
1407: * Retrieve the replacement string; if it is
1408: * undefined, resume searching for escapes.
1409: */
1410:
1.79 schwarze 1411: switch (stesc[1]) {
1.80 schwarze 1412: case '*':
1.187 schwarze 1413: if (arg_complete) {
1414: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1415: res = roff_getstrn(r, stnam, naml, &deftype);
1.203 schwarze 1416:
1417: /*
1418: * If not overriden, let \*(.T
1419: * through to the formatters.
1420: */
1421:
1422: if (res == NULL && naml == 2 &&
1423: stnam[0] == '.' && stnam[1] == 'T') {
1424: roff_setstrn(&r->strtab,
1425: ".T", 2, NULL, 0, 0);
1426: stesc--;
1427: continue;
1428: }
1.187 schwarze 1429: }
1.79 schwarze 1430: break;
1.211 schwarze 1431: case '$':
1432: if (r->mstackpos < 0) {
1433: mandoc_vmsg(MANDOCERR_ARG_UNDEF,
1434: r->parse, ln, (int)(stesc - buf->buf),
1435: "%.3s", stesc);
1436: break;
1437: }
1438: ctx = r->mstack + r->mstackpos;
1439: npos = stesc[2] - '1';
1440: if (npos >= 0 && npos <= 8) {
1441: res = npos < ctx->argc ?
1442: ctx->argv[npos] : "";
1443: break;
1444: }
1445: if (stesc[2] == '*')
1446: quote_args = 0;
1447: else if (stesc[2] == '@')
1448: quote_args = 1;
1449: else {
1450: mandoc_vmsg(MANDOCERR_ARG_NONUM,
1451: r->parse, ln, (int)(stesc - buf->buf),
1452: "%.3s", stesc);
1453: break;
1454: }
1455: asz = 0;
1456: for (npos = 0; npos < ctx->argc; npos++) {
1457: if (npos)
1458: asz++; /* blank */
1459: if (quote_args)
1460: asz += 2; /* quotes */
1461: asz += strlen(ctx->argv[npos]);
1462: }
1463: if (asz != 3) {
1464: rsz = buf->sz - (stesc - buf->buf) - 3;
1465: if (asz < 3)
1466: memmove(stesc + asz, stesc + 3, rsz);
1467: buf->sz += asz - 3;
1468: nbuf = mandoc_realloc(buf->buf, buf->sz);
1469: start = nbuf + pos;
1470: stesc = nbuf + (stesc - buf->buf);
1471: buf->buf = nbuf;
1472: if (asz > 3)
1473: memmove(stesc + asz, stesc + 3, rsz);
1474: }
1475: for (npos = 0; npos < ctx->argc; npos++) {
1476: if (npos)
1477: *stesc++ = ' ';
1478: if (quote_args)
1479: *stesc++ = '"';
1480: cp = ctx->argv[npos];
1481: while (*cp != '\0')
1482: *stesc++ = *cp++;
1483: if (quote_args)
1484: *stesc++ = '"';
1485: }
1486: continue;
1.80 schwarze 1487: case 'B':
1.79 schwarze 1488: npos = 0;
1.91 schwarze 1489: ubuf[0] = arg_complete &&
1.133 schwarze 1490: roff_evalnum(r, ln, stnam, &npos,
1491: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1492: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1493: ubuf[1] = '\0';
1494: break;
1.80 schwarze 1495: case 'n':
1.91 schwarze 1496: if (arg_complete)
1497: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.199 schwarze 1498: roff_getregn(r, stnam, naml, sign));
1.91 schwarze 1499: else
1500: ubuf[0] = '\0';
1.79 schwarze 1501: break;
1.80 schwarze 1502: case 'w':
1.91 schwarze 1503: /* use even incomplete args */
1.81 schwarze 1504: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1505: 24 * (int)naml);
1506: break;
1507: }
1.8 schwarze 1508:
1.110 schwarze 1509: if (res == NULL) {
1.211 schwarze 1510: if (stesc[1] == '*')
1511: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1512: r->parse, ln, (int)(stesc - buf->buf),
1513: "%.*s", (int)naml, stnam);
1.37 schwarze 1514: res = "";
1.118 schwarze 1515: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1516: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1517: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1518: return ROFF_IGN;
1.8 schwarze 1519: }
1520:
1.23 schwarze 1521: /* Replace the escape sequence by the string. */
1522:
1.82 schwarze 1523: *stesc = '\0';
1.110 schwarze 1524: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1525: buf->buf, res, cp) + 1;
1.8 schwarze 1526:
1.78 schwarze 1527: /* Prepare for the next replacement. */
1.8 schwarze 1528:
1.78 schwarze 1529: start = nbuf + pos;
1.110 schwarze 1530: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1531: free(buf->buf);
1532: buf->buf = nbuf;
1.42 schwarze 1533: }
1.149 schwarze 1534: return ROFF_CONT;
1.42 schwarze 1535: }
1536:
1537: /*
1.147 schwarze 1538: * Process text streams.
1.42 schwarze 1539: */
1.212 schwarze 1540: static int
1.177 schwarze 1541: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1542: {
1543: size_t sz;
1544: const char *start;
1.51 schwarze 1545: char *p;
1546: int isz;
1.42 schwarze 1547: enum mandoc_esc esc;
1548:
1.147 schwarze 1549: /* Spring the input line trap. */
1550:
1551: if (roffit_lines == 1) {
1552: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1553: free(buf->buf);
1554: buf->buf = p;
1555: buf->sz = isz + 1;
1556: *offs = 0;
1557: free(roffit_macro);
1558: roffit_lines = 0;
1.149 schwarze 1559: return ROFF_REPARSE;
1.147 schwarze 1560: } else if (roffit_lines > 1)
1561: --roffit_lines;
1562:
1.177 schwarze 1563: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1564: if (roffce_lines < 1) {
1565: r->man->last = roffce_node;
1566: r->man->next = ROFF_NEXT_SIBLING;
1567: roffce_lines = 0;
1568: roffce_node = NULL;
1569: } else
1570: roffce_lines--;
1571: }
1572:
1.147 schwarze 1573: /* Convert all breakable hyphens into ASCII_HYPH. */
1574:
1.110 schwarze 1575: start = p = buf->buf + pos;
1.42 schwarze 1576:
1.110 schwarze 1577: while (*p != '\0') {
1.42 schwarze 1578: sz = strcspn(p, "-\\");
1579: p += sz;
1580:
1.110 schwarze 1581: if (*p == '\0')
1.42 schwarze 1582: break;
1583:
1.110 schwarze 1584: if (*p == '\\') {
1.42 schwarze 1585: /* Skip over escapes. */
1586: p++;
1.62 schwarze 1587: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1588: if (esc == ESCAPE_ERROR)
1.42 schwarze 1589: break;
1.136 schwarze 1590: while (*p == '-')
1591: p++;
1.42 schwarze 1592: continue;
1593: } else if (p == start) {
1594: p++;
1595: continue;
1596: }
1597:
1.44 schwarze 1598: if (isalpha((unsigned char)p[-1]) &&
1599: isalpha((unsigned char)p[1]))
1.42 schwarze 1600: *p = ASCII_HYPH;
1601: p++;
1.8 schwarze 1602: }
1.149 schwarze 1603: return ROFF_CONT;
1.8 schwarze 1604: }
1605:
1.212 schwarze 1606: int
1.110 schwarze 1607: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1608: {
1.166 schwarze 1609: enum roff_tok t;
1.212 schwarze 1610: int e;
1.110 schwarze 1611: int pos; /* parse point */
1.115 schwarze 1612: int spos; /* saved parse point for messages */
1.110 schwarze 1613: int ppos; /* original offset in buf->buf */
1614: int ctl; /* macro line (boolean) */
1615:
1616: ppos = pos = *offs;
1.1 schwarze 1617:
1.102 schwarze 1618: /* Handle in-line equation delimiters. */
1619:
1.108 schwarze 1620: if (r->tbl == NULL &&
1621: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1622: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1623: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1624: if (e == ROFF_REPARSE)
1.149 schwarze 1625: return e;
1.102 schwarze 1626: assert(e == ROFF_CONT);
1627: }
1628:
1629: /* Expand some escape sequences. */
1.8 schwarze 1630:
1.110 schwarze 1631: e = roff_res(r, buf, ln, pos);
1.212 schwarze 1632: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1633: return e;
1.110 schwarze 1634: assert(e == ROFF_CONT);
1.8 schwarze 1635:
1.110 schwarze 1636: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1637:
1.8 schwarze 1638: /*
1.2 schwarze 1639: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1640: * text through the macro's filter.
1641: * Equations process all content themselves.
1642: * Tables process almost all content themselves, but we want
1643: * to warn about macros before passing it there.
1.2 schwarze 1644: */
1645:
1.124 schwarze 1646: if (r->last != NULL && ! ctl) {
1.2 schwarze 1647: t = r->last->tok;
1.110 schwarze 1648: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.212 schwarze 1649: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1650: return e;
1.212 schwarze 1651: e &= ~ROFF_MASK;
1652: } else
1653: e = ROFF_IGN;
1.191 schwarze 1654: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1655: eqn_read(r->eqn, buf->buf + ppos);
1.212 schwarze 1656: return e;
1.191 schwarze 1657: }
1.193 schwarze 1658: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1659: tbl_read(r->tbl, ln, buf->buf, ppos);
1660: roff_addtbl(r->man, r->tbl);
1.212 schwarze 1661: return e;
1.193 schwarze 1662: }
1.124 schwarze 1663: if ( ! ctl)
1.212 schwarze 1664: return roff_parsetext(r, buf, pos, offs) | e;
1.100 schwarze 1665:
1666: /* Skip empty request lines. */
1667:
1.110 schwarze 1668: if (buf->buf[pos] == '"') {
1.100 schwarze 1669: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1670: ln, pos, NULL);
1.149 schwarze 1671: return ROFF_IGN;
1.110 schwarze 1672: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1673: return ROFF_IGN;
1.2 schwarze 1674:
1675: /*
1676: * If a scope is open, go to the child handler for that macro,
1677: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1678: * Don't do so if an equation is open.
1.2 schwarze 1679: */
1680:
1681: if (r->last) {
1.1 schwarze 1682: t = r->last->tok;
1.149 schwarze 1683: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1684: }
1685:
1.115 schwarze 1686: /* No scope is open. This is a new request or macro. */
1687:
1688: spos = pos;
1689: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1690:
1691: /* Tables ignore most macros. */
1692:
1.180 schwarze 1693: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1694: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.115 schwarze 1695: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1696: ln, pos, buf->buf + spos);
1.180 schwarze 1697: if (t != TOKEN_NONE)
1.149 schwarze 1698: return ROFF_IGN;
1.129 schwarze 1699: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1700: pos++;
1.163 schwarze 1701: while (buf->buf[pos] == ' ')
1.129 schwarze 1702: pos++;
1.193 schwarze 1703: tbl_read(r->tbl, ln, buf->buf, pos);
1704: roff_addtbl(r->man, r->tbl);
1705: return ROFF_IGN;
1.115 schwarze 1706: }
1707:
1.177 schwarze 1708: /* For now, let high level macros abort .ce mode. */
1709:
1710: if (ctl && roffce_node != NULL &&
1.196 schwarze 1711: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1712: t == ROFF_TH || t == ROFF_TS)) {
1.177 schwarze 1713: r->man->last = roffce_node;
1714: r->man->next = ROFF_NEXT_SIBLING;
1715: roffce_lines = 0;
1716: roffce_node = NULL;
1717: }
1718:
1.2 schwarze 1719: /*
1.115 schwarze 1720: * This is neither a roff request nor a user-defined macro.
1721: * Let the standard macro set parsers handle it.
1.2 schwarze 1722: */
1723:
1.166 schwarze 1724: if (t == TOKEN_NONE)
1.149 schwarze 1725: return ROFF_CONT;
1.115 schwarze 1726:
1727: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1728:
1.168 schwarze 1729: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1730: }
1731:
1.211 schwarze 1732: /*
1733: * Internal interface function to tell the roff parser that execution
1734: * of the current macro ended. This is required because macro
1735: * definitions usually do not end with a .return request.
1736: */
1737: void
1738: roff_userret(struct roff *r)
1739: {
1740: struct mctx *ctx;
1741: int i;
1742:
1743: assert(r->mstackpos >= 0);
1744: ctx = r->mstack + r->mstackpos;
1745: for (i = 0; i < ctx->argc; i++)
1746: free(ctx->argv[i]);
1747: ctx->argc = 0;
1748: r->mstackpos--;
1749: }
1750:
1.27 schwarze 1751: void
1.2 schwarze 1752: roff_endparse(struct roff *r)
1753: {
1.193 schwarze 1754: if (r->last != NULL)
1.94 schwarze 1755: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1756: r->last->line, r->last->col,
1.167 schwarze 1757: roff_name[r->last->tok]);
1.27 schwarze 1758:
1.193 schwarze 1759: if (r->eqn != NULL) {
1.94 schwarze 1760: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.191 schwarze 1761: r->eqn->node->line, r->eqn->node->pos, "EQ");
1762: eqn_parse(r->eqn);
1763: r->eqn = NULL;
1.32 schwarze 1764: }
1765:
1.193 schwarze 1766: if (r->tbl != NULL) {
1.94 schwarze 1767: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1768: r->tbl->line, r->tbl->pos, "TS");
1.193 schwarze 1769: tbl_end(r->tbl);
1770: r->tbl = NULL;
1.27 schwarze 1771: }
1.1 schwarze 1772: }
1773:
1774: /*
1775: * Parse a roff node's type from the input buffer. This must be in the
1776: * form of ".foo xxx" in the usual way.
1777: */
1.166 schwarze 1778: static enum roff_tok
1.87 schwarze 1779: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1780: {
1.87 schwarze 1781: char *cp;
1.16 schwarze 1782: const char *mac;
1783: size_t maclen;
1.187 schwarze 1784: int deftype;
1.166 schwarze 1785: enum roff_tok t;
1.1 schwarze 1786:
1.87 schwarze 1787: cp = buf + *pos;
1788:
1789: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1790: return TOKEN_NONE;
1.1 schwarze 1791:
1.87 schwarze 1792: mac = cp;
1793: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1794:
1.187 schwarze 1795: deftype = ROFFDEF_USER | ROFFDEF_REN;
1796: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1797: switch (deftype) {
1798: case ROFFDEF_USER:
1799: t = ROFF_USERDEF;
1800: break;
1801: case ROFFDEF_REN:
1802: t = ROFF_RENAMED;
1803: break;
1804: default:
1805: t = roffhash_find(r->reqtab, mac, maclen);
1806: break;
1807: }
1.166 schwarze 1808: if (t != TOKEN_NONE)
1.87 schwarze 1809: *pos = cp - buf;
1.197 schwarze 1810: else if (deftype == ROFFDEF_UNDEF) {
1811: /* Using an undefined macro defines it to be empty. */
1812: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1813: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1814: }
1.149 schwarze 1815: return t;
1.1 schwarze 1816: }
1817:
1.138 schwarze 1818: /* --- handling of request blocks ----------------------------------------- */
1819:
1.212 schwarze 1820: static int
1.2 schwarze 1821: roff_cblock(ROFF_ARGS)
1.1 schwarze 1822: {
1823:
1.2 schwarze 1824: /*
1825: * A block-close `..' should only be invoked as a child of an
1826: * ignore macro, otherwise raise a warning and just ignore it.
1827: */
1828:
1.110 schwarze 1829: if (r->last == NULL) {
1.94 schwarze 1830: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1831: ln, ppos, "..");
1.149 schwarze 1832: return ROFF_IGN;
1.2 schwarze 1833: }
1.1 schwarze 1834:
1.2 schwarze 1835: switch (r->last->tok) {
1.80 schwarze 1836: case ROFF_am:
1.93 schwarze 1837: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1838: case ROFF_ami:
1839: case ROFF_de:
1.23 schwarze 1840: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1841: case ROFF_dei:
1842: case ROFF_ig:
1.2 schwarze 1843: break;
1844: default:
1.94 schwarze 1845: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1846: ln, ppos, "..");
1.149 schwarze 1847: return ROFF_IGN;
1.2 schwarze 1848: }
1849:
1.110 schwarze 1850: if (buf->buf[pos] != '\0')
1.90 schwarze 1851: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1852: ".. %s", buf->buf + pos);
1.2 schwarze 1853:
1854: roffnode_pop(r);
1855: roffnode_cleanscope(r);
1.149 schwarze 1856: return ROFF_IGN;
1.2 schwarze 1857:
1858: }
1.1 schwarze 1859:
1.212 schwarze 1860: static int
1.2 schwarze 1861: roffnode_cleanscope(struct roff *r)
1862: {
1.212 schwarze 1863: int inloop;
1.1 schwarze 1864:
1.212 schwarze 1865: inloop = 0;
1866: while (r->last != NULL) {
1.46 schwarze 1867: if (--r->last->endspan != 0)
1.2 schwarze 1868: break;
1.212 schwarze 1869: inloop += roffnode_pop(r);
1.2 schwarze 1870: }
1.212 schwarze 1871: return inloop;
1.2 schwarze 1872: }
1.1 schwarze 1873:
1.212 schwarze 1874: static int
1.68 schwarze 1875: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1876: {
1877: if (NULL == r->last) {
1.94 schwarze 1878: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1879: ln, ppos, "\\}");
1.212 schwarze 1880: return 0;
1.2 schwarze 1881: }
1.1 schwarze 1882:
1.2 schwarze 1883: switch (r->last->tok) {
1.80 schwarze 1884: case ROFF_el:
1885: case ROFF_ie:
1886: case ROFF_if:
1.212 schwarze 1887: case ROFF_while:
1.2 schwarze 1888: break;
1889: default:
1.94 schwarze 1890: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1891: ln, ppos, "\\}");
1.212 schwarze 1892: return 0;
1.2 schwarze 1893: }
1.1 schwarze 1894:
1.2 schwarze 1895: if (r->last->endspan > -1) {
1.94 schwarze 1896: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1897: ln, ppos, "\\}");
1.212 schwarze 1898: return 0;
1.2 schwarze 1899: }
1900:
1.212 schwarze 1901: return roffnode_pop(r) + roffnode_cleanscope(r);
1.1 schwarze 1902: }
1903:
1.212 schwarze 1904: static int
1.2 schwarze 1905: roff_block(ROFF_ARGS)
1.1 schwarze 1906: {
1.187 schwarze 1907: const char *name, *value;
1908: char *call, *cp, *iname, *rname;
1909: size_t csz, namesz, rsz;
1910: int deftype;
1.16 schwarze 1911:
1.93 schwarze 1912: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1913:
1.110 schwarze 1914: if (tok == ROFF_de1)
1.93 schwarze 1915: tok = ROFF_de;
1.123 schwarze 1916: else if (tok == ROFF_dei1)
1917: tok = ROFF_dei;
1.110 schwarze 1918: else if (tok == ROFF_am1)
1.93 schwarze 1919: tok = ROFF_am;
1.123 schwarze 1920: else if (tok == ROFF_ami1)
1921: tok = ROFF_ami;
1.93 schwarze 1922:
1923: /* Parse the macro name argument. */
1924:
1.110 schwarze 1925: cp = buf->buf + pos;
1926: if (tok == ROFF_ig) {
1.93 schwarze 1927: iname = NULL;
1928: namesz = 0;
1929: } else {
1930: iname = cp;
1931: namesz = roff_getname(r, &cp, ln, ppos);
1932: iname[namesz] = '\0';
1933: }
1.22 schwarze 1934:
1.93 schwarze 1935: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1936:
1.110 schwarze 1937: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1938: deftype = ROFFDEF_USER;
1939: name = roff_getstrn(r, iname, namesz, &deftype);
1940: if (name == NULL) {
1.93 schwarze 1941: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1942: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1943: "%.*s", (int)namesz, iname);
1944: namesz = 0;
1945: } else
1946: namesz = strlen(name);
1947: } else
1948: name = iname;
1.22 schwarze 1949:
1.110 schwarze 1950: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1951: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1952: ln, ppos, roff_name[tok]);
1.149 schwarze 1953: return ROFF_IGN;
1.93 schwarze 1954: }
1.2 schwarze 1955:
1.16 schwarze 1956: roffnode_push(r, tok, name, ln, ppos);
1957:
1958: /*
1959: * At the beginning of a `de' macro, clear the existing string
1960: * with the same name, if there is one. New content will be
1.66 schwarze 1961: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1962: */
1.22 schwarze 1963:
1.183 schwarze 1964: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 1965: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 1966: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 1967: } else if (tok == ROFF_am || tok == ROFF_ami) {
1968: deftype = ROFFDEF_ANY;
1969: value = roff_getstrn(r, iname, namesz, &deftype);
1970: switch (deftype) { /* Before appending, ... */
1971: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1972: roff_setstrn(&r->strtab, name, namesz,
1973: value, strlen(value), 0);
1974: break;
1975: case ROFFDEF_REN: /* call original standard macro. */
1976: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1977: (int)strlen(value), value);
1978: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1979: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1980: free(call);
1981: break;
1982: case ROFFDEF_STD: /* rename and call standard macro. */
1983: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1984: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1985: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1986: (int)rsz, rname);
1987: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1988: free(call);
1989: free(rname);
1990: break;
1991: default:
1992: break;
1993: }
1.183 schwarze 1994: }
1.2 schwarze 1995:
1.110 schwarze 1996: if (*cp == '\0')
1.149 schwarze 1997: return ROFF_IGN;
1.1 schwarze 1998:
1.93 schwarze 1999: /* Get the custom end marker. */
1.22 schwarze 2000:
1.93 schwarze 2001: iname = cp;
1.86 schwarze 2002: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 2003:
2004: /* Resolve the end marker if it is indirect. */
2005:
1.110 schwarze 2006: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2007: deftype = ROFFDEF_USER;
2008: name = roff_getstrn(r, iname, namesz, &deftype);
2009: if (name == NULL) {
1.93 schwarze 2010: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 2011: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 2012: "%.*s", (int)namesz, iname);
2013: namesz = 0;
2014: } else
2015: namesz = strlen(name);
2016: } else
2017: name = iname;
2018:
1.86 schwarze 2019: if (namesz)
2020: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 2021:
1.110 schwarze 2022: if (*cp != '\0')
1.90 schwarze 2023: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 2024: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 2025:
1.149 schwarze 2026: return ROFF_IGN;
1.1 schwarze 2027: }
2028:
1.212 schwarze 2029: static int
1.2 schwarze 2030: roff_block_sub(ROFF_ARGS)
1.1 schwarze 2031: {
1.166 schwarze 2032: enum roff_tok t;
1.2 schwarze 2033: int i, j;
2034:
2035: /*
2036: * First check whether a custom macro exists at this level. If
2037: * it does, then check against it. This is some of groff's
2038: * stranger behaviours. If we encountered a custom end-scope
2039: * tag and that tag also happens to be a "real" macro, then we
2040: * need to try interpreting it again as a real macro. If it's
2041: * not, then return ignore. Else continue.
2042: */
2043:
2044: if (r->last->end) {
1.35 schwarze 2045: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 2046: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 2047: break;
1.1 schwarze 2048:
1.110 schwarze 2049: if (r->last->end[j] == '\0' &&
2050: (buf->buf[i] == '\0' ||
2051: buf->buf[i] == ' ' ||
2052: buf->buf[i] == '\t')) {
1.2 schwarze 2053: roffnode_pop(r);
2054: roffnode_cleanscope(r);
1.1 schwarze 2055:
1.110 schwarze 2056: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 2057: i++;
2058:
2059: pos = i;
1.110 schwarze 2060: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 2061: TOKEN_NONE)
1.149 schwarze 2062: return ROFF_RERUN;
2063: return ROFF_IGN;
1.2 schwarze 2064: }
1.1 schwarze 2065: }
2066:
1.2 schwarze 2067: /*
2068: * If we have no custom end-query or lookup failed, then try
2069: * pulling it out of the hashtable.
2070: */
1.1 schwarze 2071:
1.110 schwarze 2072: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 2073:
1.110 schwarze 2074: if (t != ROFF_cblock) {
2075: if (tok != ROFF_ig)
2076: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 2077: return ROFF_IGN;
1.16 schwarze 2078: }
1.1 schwarze 2079:
1.149 schwarze 2080: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 2081: }
2082:
1.212 schwarze 2083: static int
1.2 schwarze 2084: roff_block_text(ROFF_ARGS)
2085: {
2086:
1.110 schwarze 2087: if (tok != ROFF_ig)
2088: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 2089:
1.149 schwarze 2090: return ROFF_IGN;
1.2 schwarze 2091: }
2092:
1.212 schwarze 2093: static int
1.2 schwarze 2094: roff_cond_sub(ROFF_ARGS)
2095: {
1.212 schwarze 2096: char *ep;
2097: int endloop, irc, rr;
1.166 schwarze 2098: enum roff_tok t;
1.2 schwarze 2099:
1.212 schwarze 2100: irc = ROFF_IGN;
1.2 schwarze 2101: rr = r->last->rule;
1.212 schwarze 2102: endloop = tok != ROFF_while ? ROFF_IGN :
2103: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2104: if (roffnode_cleanscope(r))
2105: irc |= endloop;
1.39 schwarze 2106:
1.69 schwarze 2107: /*
2108: * If `\}' occurs on a macro line without a preceding macro,
2109: * drop the line completely.
2110: */
2111:
1.110 schwarze 2112: ep = buf->buf + pos;
2113: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 2114: rr = 0;
1.69 schwarze 2115:
1.215 schwarze 2116: /*
2117: * The closing delimiter `\}' rewinds the conditional scope
2118: * but is otherwise ignored when interpreting the line.
2119: */
1.39 schwarze 2120:
1.110 schwarze 2121: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 2122: switch (ep[1]) {
2123: case '}':
2124: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.212 schwarze 2125: if (roff_ccond(r, ln, ep - buf->buf))
2126: irc |= endloop;
1.190 schwarze 2127: break;
2128: case '\0':
2129: ++ep;
2130: break;
2131: default:
2132: ep += 2;
2133: break;
1.70 schwarze 2134: }
1.50 schwarze 2135: }
1.190 schwarze 2136:
2137: /*
2138: * Fully handle known macros when they are structurally
2139: * required or when the conditional evaluated to true.
2140: */
2141:
2142: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.212 schwarze 2143: irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
2144: (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
2145: rr ? ROFF_CONT : ROFF_IGN;
2146: return irc;
1.2 schwarze 2147: }
2148:
1.212 schwarze 2149: static int
1.2 schwarze 2150: roff_cond_text(ROFF_ARGS)
2151: {
1.37 schwarze 2152: char *ep;
1.212 schwarze 2153: int endloop, irc, rr;
1.2 schwarze 2154:
1.212 schwarze 2155: irc = ROFF_IGN;
1.2 schwarze 2156: rr = r->last->rule;
1.212 schwarze 2157: endloop = tok != ROFF_while ? ROFF_IGN :
2158: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2159: if (roffnode_cleanscope(r))
2160: irc |= endloop;
1.1 schwarze 2161:
1.215 schwarze 2162: /*
2163: * If `\}' occurs on a text line with neither preceding
2164: * nor following characters, drop the line completely.
2165: */
2166:
1.110 schwarze 2167: ep = buf->buf + pos;
1.215 schwarze 2168: if (strcmp(ep, "\\}") == 0)
2169: rr = 0;
2170:
2171: /*
2172: * The closing delimiter `\}' rewinds the conditional scope
2173: * but is otherwise ignored when interpreting the line.
2174: */
2175:
1.110 schwarze 2176: while ((ep = strchr(ep, '\\')) != NULL) {
1.215 schwarze 2177: switch (ep[1]) {
2178: case '}':
2179: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2180: if (roff_ccond(r, ln, ep - buf->buf))
1.212 schwarze 2181: irc |= endloop;
1.215 schwarze 2182: break;
2183: case '\0':
2184: ++ep;
2185: break;
2186: default:
2187: ep += 2;
2188: break;
1.70 schwarze 2189: }
1.2 schwarze 2190: }
1.212 schwarze 2191: if (rr)
2192: irc |= ROFF_CONT;
2193: return irc;
1.2 schwarze 2194: }
2195:
1.138 schwarze 2196: /* --- handling of numeric and conditional expressions -------------------- */
2197:
1.77 schwarze 2198: /*
2199: * Parse a single signed integer number. Stop at the first non-digit.
2200: * If there is at least one digit, return success and advance the
2201: * parse point, else return failure and let the parse point unchanged.
2202: * Ignore overflows, treat them just like the C language.
2203: */
1.56 schwarze 2204: static int
1.133 schwarze 2205: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2206: {
1.133 schwarze 2207: int myres, scaled, n, p;
1.79 schwarze 2208:
2209: if (NULL == res)
2210: res = &myres;
1.56 schwarze 2211:
2212: p = *pos;
2213: n = v[p] == '-';
1.133 schwarze 2214: if (n || v[p] == '+')
1.56 schwarze 2215: p++;
2216:
1.133 schwarze 2217: if (flags & ROFFNUM_WHITE)
2218: while (isspace((unsigned char)v[p]))
2219: p++;
2220:
1.56 schwarze 2221: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2222: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2223: if (p == *pos + n)
2224: return 0;
2225:
2226: if (n)
2227: *res = -*res;
2228:
1.126 schwarze 2229: /* Each number may be followed by one optional scaling unit. */
2230:
2231: switch (v[p]) {
2232: case 'f':
1.133 schwarze 2233: scaled = *res * 65536;
1.126 schwarze 2234: break;
2235: case 'i':
1.133 schwarze 2236: scaled = *res * 240;
1.126 schwarze 2237: break;
2238: case 'c':
1.133 schwarze 2239: scaled = *res * 240 / 2.54;
1.126 schwarze 2240: break;
2241: case 'v':
2242: case 'P':
1.133 schwarze 2243: scaled = *res * 40;
1.126 schwarze 2244: break;
2245: case 'm':
2246: case 'n':
1.133 schwarze 2247: scaled = *res * 24;
1.126 schwarze 2248: break;
2249: case 'p':
1.133 schwarze 2250: scaled = *res * 10 / 3;
1.126 schwarze 2251: break;
2252: case 'u':
1.133 schwarze 2253: scaled = *res;
1.126 schwarze 2254: break;
2255: case 'M':
1.133 schwarze 2256: scaled = *res * 6 / 25;
1.126 schwarze 2257: break;
2258: default:
1.133 schwarze 2259: scaled = *res;
1.126 schwarze 2260: p--;
2261: break;
2262: }
1.133 schwarze 2263: if (flags & ROFFNUM_SCALE)
2264: *res = scaled;
1.126 schwarze 2265:
2266: *pos = p + 1;
1.149 schwarze 2267: return 1;
1.56 schwarze 2268: }
2269:
1.71 schwarze 2270: /*
2271: * Evaluate a string comparison condition.
2272: * The first character is the delimiter.
2273: * Succeed if the string up to its second occurrence
2274: * matches the string up to its third occurence.
2275: * Advance the cursor after the third occurrence
2276: * or lacking that, to the end of the line.
2277: */
2278: static int
2279: roff_evalstrcond(const char *v, int *pos)
2280: {
2281: const char *s1, *s2, *s3;
2282: int match;
2283:
2284: match = 0;
2285: s1 = v + *pos; /* initial delimiter */
2286: s2 = s1 + 1; /* for scanning the first string */
2287: s3 = strchr(s2, *s1); /* for scanning the second string */
2288:
2289: if (NULL == s3) /* found no middle delimiter */
2290: goto out;
2291:
2292: while ('\0' != *++s3) {
2293: if (*s2 != *s3) { /* mismatch */
2294: s3 = strchr(s3, *s1);
2295: break;
2296: }
2297: if (*s3 == *s1) { /* found the final delimiter */
2298: match = 1;
2299: break;
2300: }
2301: s2++;
2302: }
2303:
2304: out:
2305: if (NULL == s3)
2306: s3 = strchr(s2, '\0');
1.114 schwarze 2307: else if (*s3 != '\0')
1.71 schwarze 2308: s3++;
2309: *pos = s3 - v;
1.149 schwarze 2310: return match;
1.71 schwarze 2311: }
2312:
1.77 schwarze 2313: /*
2314: * Evaluate an optionally negated single character, numerical,
2315: * or string condition.
2316: */
1.71 schwarze 2317: static int
1.143 schwarze 2318: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2319: {
1.208 schwarze 2320: const char *start, *end;
2321: char *cp, *name;
2322: size_t sz;
2323: int deftype, len, number, savepos, istrue, wanttrue;
1.5 schwarze 2324:
1.71 schwarze 2325: if ('!' == v[*pos]) {
2326: wanttrue = 0;
2327: (*pos)++;
2328: } else
2329: wanttrue = 1;
2330:
1.5 schwarze 2331: switch (v[*pos]) {
1.112 schwarze 2332: case '\0':
1.149 schwarze 2333: return 0;
1.80 schwarze 2334: case 'n':
2335: case 'o':
1.5 schwarze 2336: (*pos)++;
1.149 schwarze 2337: return wanttrue;
1.80 schwarze 2338: case 'e':
2339: case 't':
1.111 schwarze 2340: case 'v':
1.5 schwarze 2341: (*pos)++;
1.149 schwarze 2342: return !wanttrue;
1.208 schwarze 2343: case 'c':
2344: do {
2345: (*pos)++;
2346: } while (v[*pos] == ' ');
2347:
2348: /*
2349: * Quirk for groff compatibility:
2350: * The horizontal tab is neither available nor unavailable.
2351: */
2352:
2353: if (v[*pos] == '\t') {
2354: (*pos)++;
2355: return 0;
2356: }
2357:
2358: /* Printable ASCII characters are available. */
2359:
2360: if (v[*pos] != '\\') {
2361: (*pos)++;
2362: return wanttrue;
2363: }
2364:
2365: end = v + ++*pos;
2366: switch (mandoc_escape(&end, &start, &len)) {
2367: case ESCAPE_SPECIAL:
2368: istrue = mchars_spec2cp(start, len) != -1;
2369: break;
2370: case ESCAPE_UNICODE:
2371: istrue = 1;
2372: break;
2373: case ESCAPE_NUMBERED:
2374: istrue = mchars_num2char(start, len) != -1;
2375: break;
2376: default:
2377: istrue = !wanttrue;
2378: break;
2379: }
2380: *pos = end - v;
2381: return istrue == wanttrue;
1.182 schwarze 2382: case 'd':
1.143 schwarze 2383: case 'r':
1.182 schwarze 2384: cp = v + *pos + 1;
2385: while (*cp == ' ')
2386: cp++;
2387: name = cp;
2388: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2389: if (sz == 0)
2390: istrue = 0;
2391: else if (v[*pos] == 'r')
2392: istrue = roff_hasregn(r, name, sz);
2393: else {
2394: deftype = ROFFDEF_ANY;
2395: roff_getstrn(r, name, sz, &deftype);
2396: istrue = !!deftype;
2397: }
1.143 schwarze 2398: *pos = cp - v;
1.182 schwarze 2399: return istrue == wanttrue;
1.5 schwarze 2400: default:
2401: break;
2402: }
2403:
1.113 schwarze 2404: savepos = *pos;
1.133 schwarze 2405: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2406: return (number > 0) == wanttrue;
1.113 schwarze 2407: else if (*pos == savepos)
1.149 schwarze 2408: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2409: else
1.149 schwarze 2410: return 0;
1.5 schwarze 2411: }
2412:
1.212 schwarze 2413: static int
1.21 schwarze 2414: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2415: {
1.30 schwarze 2416:
1.149 schwarze 2417: return ROFF_IGN;
1.21 schwarze 2418: }
2419:
1.212 schwarze 2420: static int
1.123 schwarze 2421: roff_insec(ROFF_ARGS)
2422: {
2423:
2424: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2425: ln, ppos, roff_name[tok]);
1.149 schwarze 2426: return ROFF_IGN;
1.123 schwarze 2427: }
2428:
1.212 schwarze 2429: static int
1.123 schwarze 2430: roff_unsupp(ROFF_ARGS)
2431: {
2432:
2433: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2434: ln, ppos, roff_name[tok]);
1.149 schwarze 2435: return ROFF_IGN;
1.123 schwarze 2436: }
2437:
1.212 schwarze 2438: static int
1.2 schwarze 2439: roff_cond(ROFF_ARGS)
2440: {
1.212 schwarze 2441: int irc;
1.46 schwarze 2442:
2443: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2444:
1.80 schwarze 2445: /*
1.35 schwarze 2446: * An `.el' has no conditional body: it will consume the value
2447: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2448: * defaults to DENY.
1.35 schwarze 2449: *
2450: * If we're not an `el', however, then evaluate the conditional.
2451: */
1.1 schwarze 2452:
1.110 schwarze 2453: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2454: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2455: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2456:
1.35 schwarze 2457: /*
2458: * An if-else will put the NEGATION of the current evaluated
2459: * conditional into the stack of rules.
2460: */
2461:
1.110 schwarze 2462: if (tok == ROFF_ie) {
1.96 schwarze 2463: if (r->rstackpos + 1 == r->rstacksz) {
2464: r->rstacksz += 16;
2465: r->rstack = mandoc_reallocarray(r->rstack,
2466: r->rstacksz, sizeof(int));
1.35 schwarze 2467: }
1.71 schwarze 2468: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2469: }
1.5 schwarze 2470:
2471: /* If the parent has false as its rule, then so do we. */
2472:
1.71 schwarze 2473: if (r->last->parent && !r->last->parent->rule)
2474: r->last->rule = 0;
1.5 schwarze 2475:
2476: /*
1.46 schwarze 2477: * Determine scope.
2478: * If there is nothing on the line after the conditional,
2479: * not even whitespace, use next-line scope.
1.212 schwarze 2480: * Except that .while does not support next-line scope.
1.5 schwarze 2481: */
1.2 schwarze 2482:
1.212 schwarze 2483: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.46 schwarze 2484: r->last->endspan = 2;
2485: goto out;
2486: }
2487:
1.110 schwarze 2488: while (buf->buf[pos] == ' ')
1.46 schwarze 2489: pos++;
2490:
2491: /* An opening brace requests multiline scope. */
1.2 schwarze 2492:
1.110 schwarze 2493: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2494: r->last->endspan = -1;
2495: pos += 2;
1.144 schwarze 2496: while (buf->buf[pos] == ' ')
2497: pos++;
1.46 schwarze 2498: goto out;
1.80 schwarze 2499: }
1.2 schwarze 2500:
2501: /*
1.46 schwarze 2502: * Anything else following the conditional causes
2503: * single-line scope. Warn if the scope contains
2504: * nothing but trailing whitespace.
1.2 schwarze 2505: */
2506:
1.110 schwarze 2507: if (buf->buf[pos] == '\0')
1.89 schwarze 2508: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2509: ln, ppos, roff_name[tok]);
1.2 schwarze 2510:
1.46 schwarze 2511: r->last->endspan = 1;
1.1 schwarze 2512:
1.46 schwarze 2513: out:
1.2 schwarze 2514: *offs = pos;
1.212 schwarze 2515: irc = ROFF_RERUN;
2516: if (tok == ROFF_while)
2517: irc |= ROFF_WHILE;
2518: return irc;
1.1 schwarze 2519: }
2520:
1.212 schwarze 2521: static int
1.7 schwarze 2522: roff_ds(ROFF_ARGS)
2523: {
1.85 schwarze 2524: char *string;
2525: const char *name;
2526: size_t namesz;
1.10 schwarze 2527:
1.123 schwarze 2528: /* Ignore groff compatibility mode for now. */
2529:
2530: if (tok == ROFF_ds1)
2531: tok = ROFF_ds;
2532: else if (tok == ROFF_as1)
2533: tok = ROFF_as;
2534:
1.10 schwarze 2535: /*
1.85 schwarze 2536: * The first word is the name of the string.
2537: * If it is empty or terminated by an escape sequence,
2538: * abort the `ds' request without defining anything.
1.10 schwarze 2539: */
1.7 schwarze 2540:
1.110 schwarze 2541: name = string = buf->buf + pos;
2542: if (*name == '\0')
1.149 schwarze 2543: return ROFF_IGN;
1.7 schwarze 2544:
1.85 schwarze 2545: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2546: if (name[namesz] == '\\')
1.149 schwarze 2547: return ROFF_IGN;
1.85 schwarze 2548:
2549: /* Read past the initial double-quote, if any. */
1.110 schwarze 2550: if (*string == '"')
1.7 schwarze 2551: string++;
2552:
1.10 schwarze 2553: /* The rest is the value. */
1.85 schwarze 2554: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2555: ROFF_as == tok);
1.183 schwarze 2556: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2557: return ROFF_IGN;
1.7 schwarze 2558: }
2559:
1.77 schwarze 2560: /*
2561: * Parse a single operator, one or two characters long.
2562: * If the operator is recognized, return success and advance the
2563: * parse point, else return failure and let the parse point unchanged.
2564: */
2565: static int
2566: roff_getop(const char *v, int *pos, char *res)
2567: {
2568:
2569: *res = v[*pos];
2570:
2571: switch (*res) {
1.80 schwarze 2572: case '+':
2573: case '-':
2574: case '*':
2575: case '/':
2576: case '%':
2577: case '&':
2578: case ':':
1.77 schwarze 2579: break;
2580: case '<':
2581: switch (v[*pos + 1]) {
1.80 schwarze 2582: case '=':
1.77 schwarze 2583: *res = 'l';
2584: (*pos)++;
2585: break;
1.80 schwarze 2586: case '>':
1.77 schwarze 2587: *res = '!';
2588: (*pos)++;
2589: break;
1.80 schwarze 2590: case '?':
1.77 schwarze 2591: *res = 'i';
2592: (*pos)++;
2593: break;
2594: default:
2595: break;
2596: }
2597: break;
2598: case '>':
2599: switch (v[*pos + 1]) {
1.80 schwarze 2600: case '=':
1.77 schwarze 2601: *res = 'g';
2602: (*pos)++;
2603: break;
1.80 schwarze 2604: case '?':
1.77 schwarze 2605: *res = 'a';
2606: (*pos)++;
2607: break;
2608: default:
2609: break;
2610: }
2611: break;
2612: case '=':
2613: if ('=' == v[*pos + 1])
2614: (*pos)++;
2615: break;
2616: default:
1.149 schwarze 2617: return 0;
1.77 schwarze 2618: }
2619: (*pos)++;
2620:
1.149 schwarze 2621: return *res;
1.77 schwarze 2622: }
2623:
2624: /*
2625: * Evaluate either a parenthesized numeric expression
2626: * or a single signed integer number.
2627: */
2628: static int
1.106 schwarze 2629: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2630: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2631: {
2632:
2633: if ('(' != v[*pos])
1.149 schwarze 2634: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2635:
2636: (*pos)++;
1.133 schwarze 2637: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2638: return 0;
1.77 schwarze 2639:
1.79 schwarze 2640: /*
2641: * Omission of the closing parenthesis
2642: * is an error in validation mode,
2643: * but ignored in evaluation mode.
2644: */
2645:
1.77 schwarze 2646: if (')' == v[*pos])
2647: (*pos)++;
1.79 schwarze 2648: else if (NULL == res)
1.149 schwarze 2649: return 0;
1.77 schwarze 2650:
1.149 schwarze 2651: return 1;
1.77 schwarze 2652: }
2653:
2654: /*
2655: * Evaluate a complete numeric expression.
2656: * Proceed left to right, there is no concept of precedence.
2657: */
2658: static int
1.106 schwarze 2659: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2660: int *pos, int *res, int flags)
1.77 schwarze 2661: {
2662: int mypos, operand2;
2663: char operator;
2664:
2665: if (NULL == pos) {
2666: mypos = 0;
2667: pos = &mypos;
2668: }
2669:
1.133 schwarze 2670: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2671: while (isspace((unsigned char)v[*pos]))
2672: (*pos)++;
2673:
1.133 schwarze 2674: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2675: return 0;
1.77 schwarze 2676:
2677: while (1) {
1.133 schwarze 2678: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2679: while (isspace((unsigned char)v[*pos]))
2680: (*pos)++;
2681:
2682: if ( ! roff_getop(v, pos, &operator))
2683: break;
2684:
1.133 schwarze 2685: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2686: while (isspace((unsigned char)v[*pos]))
2687: (*pos)++;
2688:
1.133 schwarze 2689: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2690: return 0;
1.77 schwarze 2691:
1.133 schwarze 2692: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2693: while (isspace((unsigned char)v[*pos]))
2694: (*pos)++;
1.79 schwarze 2695:
2696: if (NULL == res)
2697: continue;
1.77 schwarze 2698:
2699: switch (operator) {
1.80 schwarze 2700: case '+':
1.77 schwarze 2701: *res += operand2;
2702: break;
1.80 schwarze 2703: case '-':
1.77 schwarze 2704: *res -= operand2;
2705: break;
1.80 schwarze 2706: case '*':
1.77 schwarze 2707: *res *= operand2;
2708: break;
1.80 schwarze 2709: case '/':
1.116 schwarze 2710: if (operand2 == 0) {
1.106 schwarze 2711: mandoc_msg(MANDOCERR_DIVZERO,
2712: r->parse, ln, *pos, v);
2713: *res = 0;
2714: break;
2715: }
1.77 schwarze 2716: *res /= operand2;
2717: break;
1.80 schwarze 2718: case '%':
1.116 schwarze 2719: if (operand2 == 0) {
2720: mandoc_msg(MANDOCERR_DIVZERO,
2721: r->parse, ln, *pos, v);
2722: *res = 0;
2723: break;
2724: }
1.77 schwarze 2725: *res %= operand2;
2726: break;
1.80 schwarze 2727: case '<':
1.77 schwarze 2728: *res = *res < operand2;
2729: break;
1.80 schwarze 2730: case '>':
1.77 schwarze 2731: *res = *res > operand2;
2732: break;
1.80 schwarze 2733: case 'l':
1.77 schwarze 2734: *res = *res <= operand2;
2735: break;
1.80 schwarze 2736: case 'g':
1.77 schwarze 2737: *res = *res >= operand2;
2738: break;
1.80 schwarze 2739: case '=':
1.77 schwarze 2740: *res = *res == operand2;
2741: break;
1.80 schwarze 2742: case '!':
1.77 schwarze 2743: *res = *res != operand2;
2744: break;
1.80 schwarze 2745: case '&':
1.77 schwarze 2746: *res = *res && operand2;
2747: break;
1.80 schwarze 2748: case ':':
1.77 schwarze 2749: *res = *res || operand2;
2750: break;
1.80 schwarze 2751: case 'i':
1.77 schwarze 2752: if (operand2 < *res)
2753: *res = operand2;
2754: break;
1.80 schwarze 2755: case 'a':
1.77 schwarze 2756: if (operand2 > *res)
2757: *res = operand2;
2758: break;
2759: default:
2760: abort();
2761: }
2762: }
1.149 schwarze 2763: return 1;
1.77 schwarze 2764: }
2765:
1.138 schwarze 2766: /* --- register management ------------------------------------------------ */
2767:
1.52 schwarze 2768: void
1.60 schwarze 2769: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2770: {
1.199 schwarze 2771: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.198 schwarze 2772: }
2773:
2774: static void
2775: roff_setregn(struct roff *r, const char *name, size_t len,
1.199 schwarze 2776: int val, char sign, int step)
1.198 schwarze 2777: {
1.52 schwarze 2778: struct roffreg *reg;
2779:
2780: /* Search for an existing register with the same name. */
2781: reg = r->regtab;
2782:
1.198 schwarze 2783: while (reg != NULL && (reg->key.sz != len ||
2784: strncmp(reg->key.p, name, len) != 0))
1.52 schwarze 2785: reg = reg->next;
1.41 schwarze 2786:
1.52 schwarze 2787: if (NULL == reg) {
2788: /* Create a new register. */
2789: reg = mandoc_malloc(sizeof(struct roffreg));
1.198 schwarze 2790: reg->key.p = mandoc_strndup(name, len);
2791: reg->key.sz = len;
1.60 schwarze 2792: reg->val = 0;
1.199 schwarze 2793: reg->step = 0;
1.52 schwarze 2794: reg->next = r->regtab;
2795: r->regtab = reg;
2796: }
2797:
1.60 schwarze 2798: if ('+' == sign)
2799: reg->val += val;
2800: else if ('-' == sign)
2801: reg->val -= val;
2802: else
2803: reg->val = val;
1.199 schwarze 2804: if (step != INT_MIN)
2805: reg->step = step;
1.41 schwarze 2806: }
2807:
1.65 schwarze 2808: /*
2809: * Handle some predefined read-only number registers.
2810: * For now, return -1 if the requested register is not predefined;
2811: * in case a predefined read-only register having the value -1
2812: * were to turn up, another special value would have to be chosen.
2813: */
2814: static int
1.145 schwarze 2815: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2816: {
2817:
2818: switch (*name) {
1.145 schwarze 2819: case '$': /* Number of arguments of the last macro evaluated. */
1.211 schwarze 2820: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.80 schwarze 2821: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2822: return 0;
1.80 schwarze 2823: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2824: return 1;
1.80 schwarze 2825: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2826: return 24;
1.80 schwarze 2827: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2828: return 0;
1.80 schwarze 2829: case 'T': /* Some output device is always defined. */
1.149 schwarze 2830: return 1;
1.80 schwarze 2831: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2832: return 40;
1.65 schwarze 2833: default:
1.149 schwarze 2834: return -1;
1.65 schwarze 2835: }
2836: }
2837:
1.53 schwarze 2838: int
1.198 schwarze 2839: roff_getreg(struct roff *r, const char *name)
1.41 schwarze 2840: {
1.199 schwarze 2841: return roff_getregn(r, name, strlen(name), '\0');
1.53 schwarze 2842: }
2843:
2844: static int
1.199 schwarze 2845: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.53 schwarze 2846: {
2847: struct roffreg *reg;
1.65 schwarze 2848: int val;
2849:
2850: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2851: val = roff_getregro(r, name + 1);
1.65 schwarze 2852: if (-1 != val)
1.149 schwarze 2853: return val;
1.65 schwarze 2854: }
1.53 schwarze 2855:
1.199 schwarze 2856: for (reg = r->regtab; reg; reg = reg->next) {
1.53 schwarze 2857: if (len == reg->key.sz &&
1.199 schwarze 2858: 0 == strncmp(name, reg->key.p, len)) {
2859: switch (sign) {
2860: case '+':
2861: reg->val += reg->step;
2862: break;
2863: case '-':
2864: reg->val -= reg->step;
2865: break;
2866: default:
2867: break;
2868: }
1.149 schwarze 2869: return reg->val;
1.199 schwarze 2870: }
2871: }
1.143 schwarze 2872:
1.199 schwarze 2873: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.149 schwarze 2874: return 0;
1.143 schwarze 2875: }
2876:
2877: static int
2878: roff_hasregn(const struct roff *r, const char *name, size_t len)
2879: {
2880: struct roffreg *reg;
2881: int val;
2882:
2883: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2884: val = roff_getregro(r, name + 1);
1.143 schwarze 2885: if (-1 != val)
1.149 schwarze 2886: return 1;
1.143 schwarze 2887: }
2888:
2889: for (reg = r->regtab; reg; reg = reg->next)
2890: if (len == reg->key.sz &&
2891: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2892: return 1;
1.41 schwarze 2893:
1.149 schwarze 2894: return 0;
1.41 schwarze 2895: }
2896:
1.52 schwarze 2897: static void
2898: roff_freereg(struct roffreg *reg)
1.41 schwarze 2899: {
1.52 schwarze 2900: struct roffreg *old_reg;
1.41 schwarze 2901:
1.52 schwarze 2902: while (NULL != reg) {
2903: free(reg->key.p);
2904: old_reg = reg;
2905: reg = reg->next;
2906: free(old_reg);
2907: }
1.41 schwarze 2908: }
1.7 schwarze 2909:
1.212 schwarze 2910: static int
1.6 schwarze 2911: roff_nr(ROFF_ARGS)
1.1 schwarze 2912: {
1.199 schwarze 2913: char *key, *val, *step;
1.85 schwarze 2914: size_t keysz;
1.199 schwarze 2915: int iv, is, len;
1.60 schwarze 2916: char sign;
1.6 schwarze 2917:
1.110 schwarze 2918: key = val = buf->buf + pos;
2919: if (*key == '\0')
1.149 schwarze 2920: return ROFF_IGN;
1.85 schwarze 2921:
2922: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2923: if (key[keysz] == '\\')
1.149 schwarze 2924: return ROFF_IGN;
1.6 schwarze 2925:
1.60 schwarze 2926: sign = *val;
1.110 schwarze 2927: if (sign == '+' || sign == '-')
1.60 schwarze 2928: val++;
2929:
1.199 schwarze 2930: len = 0;
2931: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2932: return ROFF_IGN;
2933:
2934: step = val + len;
2935: while (isspace((unsigned char)*step))
2936: step++;
2937: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2938: is = INT_MIN;
1.1 schwarze 2939:
1.199 schwarze 2940: roff_setregn(r, key, keysz, iv, sign, is);
1.149 schwarze 2941: return ROFF_IGN;
1.76 schwarze 2942: }
2943:
1.212 schwarze 2944: static int
1.76 schwarze 2945: roff_rr(ROFF_ARGS)
2946: {
2947: struct roffreg *reg, **prev;
1.85 schwarze 2948: char *name, *cp;
2949: size_t namesz;
1.76 schwarze 2950:
1.110 schwarze 2951: name = cp = buf->buf + pos;
2952: if (*name == '\0')
1.149 schwarze 2953: return ROFF_IGN;
1.85 schwarze 2954: namesz = roff_getname(r, &cp, ln, pos);
2955: name[namesz] = '\0';
1.76 schwarze 2956:
2957: prev = &r->regtab;
2958: while (1) {
2959: reg = *prev;
1.110 schwarze 2960: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2961: break;
2962: prev = ®->next;
2963: }
1.110 schwarze 2964: if (reg != NULL) {
1.76 schwarze 2965: *prev = reg->next;
2966: free(reg->key.p);
2967: free(reg);
2968: }
1.149 schwarze 2969: return ROFF_IGN;
1.29 schwarze 2970: }
2971:
1.138 schwarze 2972: /* --- handler functions for roff requests -------------------------------- */
2973:
1.212 schwarze 2974: static int
1.29 schwarze 2975: roff_rm(ROFF_ARGS)
2976: {
2977: const char *name;
2978: char *cp;
1.85 schwarze 2979: size_t namesz;
1.29 schwarze 2980:
1.110 schwarze 2981: cp = buf->buf + pos;
2982: while (*cp != '\0') {
1.85 schwarze 2983: name = cp;
1.110 schwarze 2984: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2985: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 2986: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 2987: if (name[namesz] == '\\')
1.85 schwarze 2988: break;
1.29 schwarze 2989: }
1.149 schwarze 2990: return ROFF_IGN;
1.51 schwarze 2991: }
2992:
1.212 schwarze 2993: static int
1.51 schwarze 2994: roff_it(ROFF_ARGS)
2995: {
2996: int iv;
2997:
2998: /* Parse the number of lines. */
1.133 schwarze 2999:
3000: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 3001: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 3002: ln, ppos, buf->buf + 1);
1.149 schwarze 3003: return ROFF_IGN;
1.51 schwarze 3004: }
3005:
1.134 schwarze 3006: while (isspace((unsigned char)buf->buf[pos]))
3007: pos++;
3008:
3009: /*
3010: * Arm the input line trap.
3011: * Special-casing "an-trap" is an ugly workaround to cope
3012: * with DocBook stupidly fiddling with man(7) internals.
3013: */
1.133 schwarze 3014:
1.51 schwarze 3015: roffit_lines = iv;
1.134 schwarze 3016: roffit_macro = mandoc_strdup(iv != 1 ||
3017: strcmp(buf->buf + pos, "an-trap") ?
3018: buf->buf + pos : "br");
1.149 schwarze 3019: return ROFF_IGN;
1.47 schwarze 3020: }
3021:
1.212 schwarze 3022: static int
1.47 schwarze 3023: roff_Dd(ROFF_ARGS)
3024: {
1.187 schwarze 3025: int mask;
3026: enum roff_tok t, te;
1.99 schwarze 3027:
1.187 schwarze 3028: switch (tok) {
3029: case ROFF_Dd:
3030: tok = MDOC_Dd;
3031: te = MDOC_MAX;
3032: if (r->format == 0)
3033: r->format = MPARSE_MDOC;
3034: mask = MPARSE_MDOC | MPARSE_QUICK;
3035: break;
3036: case ROFF_TH:
3037: tok = MAN_TH;
3038: te = MAN_MAX;
3039: if (r->format == 0)
3040: r->format = MPARSE_MAN;
3041: mask = MPARSE_QUICK;
3042: break;
3043: default:
3044: abort();
3045: }
3046: if ((r->options & mask) == 0)
3047: for (t = tok; t < te; t++)
3048: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 3049: return ROFF_CONT;
1.14 schwarze 3050: }
3051:
1.212 schwarze 3052: static int
1.27 schwarze 3053: roff_TE(ROFF_ARGS)
3054: {
1.193 schwarze 3055: if (r->tbl == NULL) {
1.94 schwarze 3056: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3057: ln, ppos, "TE");
1.193 schwarze 3058: return ROFF_IGN;
3059: }
3060: if (tbl_end(r->tbl) == 0) {
3061: r->tbl = NULL;
1.130 schwarze 3062: free(buf->buf);
3063: buf->buf = mandoc_strdup(".sp");
3064: buf->sz = 4;
1.201 schwarze 3065: *offs = 0;
1.149 schwarze 3066: return ROFF_REPARSE;
1.130 schwarze 3067: }
1.193 schwarze 3068: r->tbl = NULL;
1.149 schwarze 3069: return ROFF_IGN;
1.27 schwarze 3070: }
3071:
1.212 schwarze 3072: static int
1.27 schwarze 3073: roff_T_(ROFF_ARGS)
3074: {
3075:
3076: if (NULL == r->tbl)
1.94 schwarze 3077: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3078: ln, ppos, "T&");
1.27 schwarze 3079: else
1.168 schwarze 3080: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 3081:
1.149 schwarze 3082: return ROFF_IGN;
1.27 schwarze 3083: }
3084:
1.102 schwarze 3085: /*
3086: * Handle in-line equation delimiters.
3087: */
1.212 schwarze 3088: static int
1.110 schwarze 3089: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 3090: {
1.105 schwarze 3091: char *cp1, *cp2;
3092: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 3093:
1.102 schwarze 3094: /*
3095: * Outside equations, look for an opening delimiter.
3096: * If we are inside an equation, we already know it is
3097: * in-line, or this function wouldn't have been called;
3098: * so look for a closing delimiter.
3099: */
3100:
1.110 schwarze 3101: cp1 = buf->buf + pos;
1.102 schwarze 3102: cp2 = strchr(cp1, r->eqn == NULL ?
3103: r->last_eqn->odelim : r->last_eqn->cdelim);
3104: if (cp2 == NULL)
1.149 schwarze 3105: return ROFF_CONT;
1.102 schwarze 3106:
1.105 schwarze 3107: *cp2++ = '\0';
3108: bef_pr = bef_nl = aft_nl = aft_pr = "";
3109:
3110: /* Handle preceding text, protecting whitespace. */
3111:
1.110 schwarze 3112: if (*buf->buf != '\0') {
1.105 schwarze 3113: if (r->eqn == NULL)
3114: bef_pr = "\\&";
3115: bef_nl = "\n";
3116: }
3117:
3118: /*
3119: * Prepare replacing the delimiter with an equation macro
3120: * and drop leading white space from the equation.
3121: */
1.102 schwarze 3122:
1.105 schwarze 3123: if (r->eqn == NULL) {
3124: while (*cp2 == ' ')
3125: cp2++;
3126: mac = ".EQ";
3127: } else
3128: mac = ".EN";
3129:
3130: /* Handle following text, protecting whitespace. */
3131:
3132: if (*cp2 != '\0') {
3133: aft_nl = "\n";
3134: if (r->eqn != NULL)
3135: aft_pr = "\\&";
3136: }
3137:
3138: /* Do the actual replacement. */
3139:
1.110 schwarze 3140: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 3141: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 3142: free(buf->buf);
3143: buf->buf = cp1;
1.102 schwarze 3144:
3145: /* Toggle the in-line state of the eqn subsystem. */
3146:
3147: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 3148: return ROFF_REPARSE;
1.41 schwarze 3149: }
3150:
1.212 schwarze 3151: static int
1.107 schwarze 3152: roff_EQ(ROFF_ARGS)
1.32 schwarze 3153: {
1.191 schwarze 3154: struct roff_node *n;
3155:
1.194 schwarze 3156: if (r->man->macroset == MACROSET_MAN)
3157: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 3158: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3159: if (ln > r->man->last->line)
3160: n->flags |= NODE_LINE;
3161: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
3162: n->eqn->expectargs = UINT_MAX;
3163: roff_node_append(r->man, n);
3164: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 3165:
1.110 schwarze 3166: assert(r->eqn == NULL);
1.191 schwarze 3167: if (r->last_eqn == NULL)
3168: r->last_eqn = eqn_alloc(r->parse);
3169: else
3170: eqn_reset(r->last_eqn);
3171: r->eqn = r->last_eqn;
3172: r->eqn->node = n;
1.41 schwarze 3173:
1.110 schwarze 3174: if (buf->buf[pos] != '\0')
1.107 schwarze 3175: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 3176: ".EQ %s", buf->buf + pos);
1.41 schwarze 3177:
1.149 schwarze 3178: return ROFF_IGN;
1.32 schwarze 3179: }
3180:
1.212 schwarze 3181: static int
1.32 schwarze 3182: roff_EN(ROFF_ARGS)
3183: {
1.191 schwarze 3184: if (r->eqn != NULL) {
3185: eqn_parse(r->eqn);
3186: r->eqn = NULL;
3187: } else
3188: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
3189: if (buf->buf[pos] != '\0')
3190: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3191: "EN %s", buf->buf + pos);
1.149 schwarze 3192: return ROFF_IGN;
1.32 schwarze 3193: }
3194:
1.212 schwarze 3195: static int
1.27 schwarze 3196: roff_TS(ROFF_ARGS)
3197: {
1.193 schwarze 3198: if (r->tbl != NULL) {
1.94 schwarze 3199: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
3200: ln, ppos, "TS breaks TS");
1.193 schwarze 3201: tbl_end(r->tbl);
1.27 schwarze 3202: }
1.193 schwarze 3203: r->tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 3204: if (r->last_tbl)
1.193 schwarze 3205: r->last_tbl->next = r->tbl;
1.27 schwarze 3206: else
1.193 schwarze 3207: r->first_tbl = r->tbl;
3208: r->last_tbl = r->tbl;
1.169 schwarze 3209: return ROFF_IGN;
3210: }
3211:
1.212 schwarze 3212: static int
1.169 schwarze 3213: roff_onearg(ROFF_ARGS)
3214: {
3215: struct roff_node *n;
3216: char *cp;
1.177 schwarze 3217: int npos;
1.169 schwarze 3218:
1.174 schwarze 3219: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 3220: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3221: tok == ROFF_ti))
1.174 schwarze 3222: man_breakscope(r->man, tok);
3223:
1.181 schwarze 3224: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 3225: r->man->last = roffce_node;
3226: r->man->next = ROFF_NEXT_SIBLING;
3227: }
3228:
1.169 schwarze 3229: roff_elem_alloc(r->man, ln, ppos, tok);
3230: n = r->man->last;
3231:
3232: cp = buf->buf + pos;
3233: if (*cp != '\0') {
3234: while (*cp != '\0' && *cp != ' ')
3235: cp++;
3236: while (*cp == ' ')
3237: *cp++ = '\0';
3238: if (*cp != '\0')
3239: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
3240: r->parse, ln, cp - buf->buf,
3241: "%s ... %s", roff_name[tok], cp);
3242: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 3243: }
3244:
1.181 schwarze 3245: if (tok == ROFF_ce || tok == ROFF_rj) {
3246: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 3247: roff_word_alloc(r->man, ln, pos, "1");
3248: r->man->last->flags |= NODE_NOSRC;
3249: }
3250: npos = 0;
3251: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3252: &roffce_lines, 0) == 0) {
3253: mandoc_vmsg(MANDOCERR_CE_NONUM,
3254: r->parse, ln, pos, "ce %s", buf->buf + pos);
3255: roffce_lines = 1;
3256: }
3257: if (roffce_lines < 1) {
3258: r->man->last = r->man->last->parent;
3259: roffce_node = NULL;
3260: roffce_lines = 0;
3261: } else
3262: roffce_node = r->man->last->parent;
3263: } else {
3264: n->flags |= NODE_VALID | NODE_ENDED;
3265: r->man->last = n;
3266: }
3267: n->flags |= NODE_LINE;
1.172 schwarze 3268: r->man->next = ROFF_NEXT_SIBLING;
3269: return ROFF_IGN;
3270: }
3271:
1.212 schwarze 3272: static int
1.172 schwarze 3273: roff_manyarg(ROFF_ARGS)
3274: {
3275: struct roff_node *n;
3276: char *sp, *ep;
3277:
3278: roff_elem_alloc(r->man, ln, ppos, tok);
3279: n = r->man->last;
3280:
3281: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3282: while (*ep != '\0' && *ep != ' ')
3283: ep++;
3284: while (*ep == ' ')
3285: *ep++ = '\0';
3286: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3287: }
3288:
3289: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3290: r->man->last = n;
3291: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3292: return ROFF_IGN;
1.123 schwarze 3293: }
3294:
1.212 schwarze 3295: static int
1.183 schwarze 3296: roff_als(ROFF_ARGS)
3297: {
3298: char *oldn, *newn, *end, *value;
3299: size_t oldsz, newsz, valsz;
3300:
3301: newn = oldn = buf->buf + pos;
3302: if (*newn == '\0')
3303: return ROFF_IGN;
3304:
3305: newsz = roff_getname(r, &oldn, ln, pos);
3306: if (newn[newsz] == '\\' || *oldn == '\0')
3307: return ROFF_IGN;
3308:
3309: end = oldn;
3310: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3311: if (oldsz == 0)
3312: return ROFF_IGN;
3313:
1.210 schwarze 3314: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.187 schwarze 3315: (int)oldsz, oldn);
1.183 schwarze 3316: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3317: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3318: free(value);
3319: return ROFF_IGN;
3320: }
3321:
1.212 schwarze 3322: static int
1.168 schwarze 3323: roff_br(ROFF_ARGS)
1.123 schwarze 3324: {
1.174 schwarze 3325: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3326: man_breakscope(r->man, ROFF_br);
1.168 schwarze 3327: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3328: if (buf->buf[pos] != '\0')
3329: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3330: "%s %s", roff_name[tok], buf->buf + pos);
3331: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3332: r->man->next = ROFF_NEXT_SIBLING;
3333: return ROFF_IGN;
1.27 schwarze 3334: }
3335:
1.212 schwarze 3336: static int
1.48 schwarze 3337: roff_cc(ROFF_ARGS)
3338: {
3339: const char *p;
3340:
1.110 schwarze 3341: p = buf->buf + pos;
1.48 schwarze 3342:
1.110 schwarze 3343: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3344: r->control = '\0';
1.48 schwarze 3345:
1.110 schwarze 3346: if (*p != '\0')
1.132 schwarze 3347: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3348: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3349:
1.213 schwarze 3350: return ROFF_IGN;
3351: }
3352:
3353: static int
3354: roff_char(ROFF_ARGS)
3355: {
3356: const char *p, *kp, *vp;
3357: size_t ksz, vsz;
3358: int font;
3359:
3360: /* Parse the character to be replaced. */
3361:
3362: kp = buf->buf + pos;
3363: p = kp + 1;
3364: if (*kp == '\0' || (*kp == '\\' &&
3365: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3366: (*p != ' ' && *p != '\0')) {
3367: mandoc_vmsg(MANDOCERR_CHAR_ARG, r->parse,
3368: ln, pos, "char %s", kp);
3369: return ROFF_IGN;
3370: }
3371: ksz = p - kp;
3372: while (*p == ' ')
3373: p++;
3374:
3375: /*
3376: * If the replacement string contains a font escape sequence,
3377: * we have to restore the font at the end.
3378: */
3379:
3380: vp = p;
3381: vsz = strlen(p);
3382: font = 0;
3383: while (*p != '\0') {
3384: if (*p++ != '\\')
3385: continue;
3386: switch (mandoc_escape(&p, NULL, NULL)) {
3387: case ESCAPE_FONT:
3388: case ESCAPE_FONTROMAN:
3389: case ESCAPE_FONTITALIC:
3390: case ESCAPE_FONTBOLD:
3391: case ESCAPE_FONTBI:
1.214 schwarze 3392: case ESCAPE_FONTCW:
1.213 schwarze 3393: case ESCAPE_FONTPREV:
3394: font++;
3395: break;
3396: default:
3397: break;
3398: }
3399: }
3400: if (font > 1)
3401: mandoc_msg(MANDOCERR_CHAR_FONT, r->parse,
3402: ln, vp - buf->buf, vp);
3403:
3404: /*
3405: * Approximate the effect of .char using the .tr tables.
3406: * XXX In groff, .char and .tr interact differently.
3407: */
3408:
3409: if (ksz == 1) {
3410: if (r->xtab == NULL)
3411: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3412: assert((unsigned int)*kp < 128);
3413: free(r->xtab[(int)*kp].p);
3414: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3415: "%s%s", vp, font ? "\fP" : "");
3416: } else {
3417: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3418: if (font)
3419: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3420: }
1.149 schwarze 3421: return ROFF_IGN;
1.48 schwarze 3422: }
3423:
1.212 schwarze 3424: static int
1.175 schwarze 3425: roff_ec(ROFF_ARGS)
3426: {
3427: const char *p;
3428:
3429: p = buf->buf + pos;
3430: if (*p == '\0')
3431: r->escape = '\\';
3432: else {
3433: r->escape = *p;
3434: if (*++p != '\0')
3435: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3436: ln, p - buf->buf, "ec ... %s", p);
3437: }
3438: return ROFF_IGN;
3439: }
3440:
1.212 schwarze 3441: static int
1.175 schwarze 3442: roff_eo(ROFF_ARGS)
3443: {
3444: r->escape = '\0';
3445: if (buf->buf[pos] != '\0')
3446: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3447: ln, pos, "eo %s", buf->buf + pos);
3448: return ROFF_IGN;
1.202 schwarze 3449: }
3450:
1.212 schwarze 3451: static int
1.202 schwarze 3452: roff_nop(ROFF_ARGS)
3453: {
3454: while (buf->buf[pos] == ' ')
3455: pos++;
3456: *offs = pos;
3457: return ROFF_RERUN;
1.175 schwarze 3458: }
3459:
1.212 schwarze 3460: static int
1.42 schwarze 3461: roff_tr(ROFF_ARGS)
3462: {
3463: const char *p, *first, *second;
3464: size_t fsz, ssz;
3465: enum mandoc_esc esc;
3466:
1.110 schwarze 3467: p = buf->buf + pos;
1.42 schwarze 3468:
1.110 schwarze 3469: if (*p == '\0') {
1.132 schwarze 3470: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 3471: return ROFF_IGN;
1.42 schwarze 3472: }
3473:
1.110 schwarze 3474: while (*p != '\0') {
1.42 schwarze 3475: fsz = ssz = 1;
3476:
3477: first = p++;
1.110 schwarze 3478: if (*first == '\\') {
1.42 schwarze 3479: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3480: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3481: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3482: ln, (int)(p - buf->buf), first);
1.149 schwarze 3483: return ROFF_IGN;
1.42 schwarze 3484: }
3485: fsz = (size_t)(p - first);
3486: }
3487:
3488: second = p++;
1.110 schwarze 3489: if (*second == '\\') {
1.42 schwarze 3490: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3491: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3492: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3493: ln, (int)(p - buf->buf), second);
1.149 schwarze 3494: return ROFF_IGN;
1.42 schwarze 3495: }
3496: ssz = (size_t)(p - second);
1.110 schwarze 3497: } else if (*second == '\0') {
1.132 schwarze 3498: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3499: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3500: second = " ";
3501: p--;
3502: }
3503:
3504: if (fsz > 1) {
1.80 schwarze 3505: roff_setstrn(&r->xmbtab, first, fsz,
3506: second, ssz, 0);
1.42 schwarze 3507: continue;
3508: }
3509:
1.110 schwarze 3510: if (r->xtab == NULL)
1.80 schwarze 3511: r->xtab = mandoc_calloc(128,
3512: sizeof(struct roffstr));
1.42 schwarze 3513:
3514: free(r->xtab[(int)*first].p);
3515: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3516: r->xtab[(int)*first].sz = ssz;
3517: }
3518:
1.149 schwarze 3519: return ROFF_IGN;
1.42 schwarze 3520: }
3521:
1.211 schwarze 3522: /*
3523: * Implementation of the .return request.
3524: * There is no need to call roff_userret() from here.
3525: * The read module will call that after rewinding the reader stack
3526: * to the place from where the current macro was called.
3527: */
1.212 schwarze 3528: static int
1.211 schwarze 3529: roff_return(ROFF_ARGS)
3530: {
3531: if (r->mstackpos >= 0)
1.212 schwarze 3532: return ROFF_IGN | ROFF_USERRET;
1.211 schwarze 3533:
3534: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "return");
3535: return ROFF_IGN;
3536: }
3537:
1.212 schwarze 3538: static int
1.178 schwarze 3539: roff_rn(ROFF_ARGS)
3540: {
3541: const char *value;
3542: char *oldn, *newn, *end;
3543: size_t oldsz, newsz;
1.187 schwarze 3544: int deftype;
1.178 schwarze 3545:
3546: oldn = newn = buf->buf + pos;
3547: if (*oldn == '\0')
3548: return ROFF_IGN;
3549:
3550: oldsz = roff_getname(r, &newn, ln, pos);
3551: if (oldn[oldsz] == '\\' || *newn == '\0')
3552: return ROFF_IGN;
3553:
3554: end = newn;
3555: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3556: if (newsz == 0)
3557: return ROFF_IGN;
3558:
1.187 schwarze 3559: deftype = ROFFDEF_ANY;
3560: value = roff_getstrn(r, oldn, oldsz, &deftype);
3561: switch (deftype) {
3562: case ROFFDEF_USER:
1.178 schwarze 3563: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3564: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3565: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3566: break;
3567: case ROFFDEF_PRE:
3568: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3569: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3570: break;
3571: case ROFFDEF_REN:
1.178 schwarze 3572: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3573: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3574: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3575: break;
3576: case ROFFDEF_STD:
1.178 schwarze 3577: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3578: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3579: break;
3580: default:
3581: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3582: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3583: break;
3584: }
1.178 schwarze 3585: return ROFF_IGN;
3586: }
3587:
1.212 schwarze 3588: static int
1.211 schwarze 3589: roff_shift(ROFF_ARGS)
3590: {
3591: struct mctx *ctx;
3592: int levels, i;
3593:
3594: levels = 1;
3595: if (buf->buf[pos] != '\0' &&
3596: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
3597: mandoc_vmsg(MANDOCERR_CE_NONUM, r->parse,
3598: ln, pos, "shift %s", buf->buf + pos);
3599: levels = 1;
3600: }
3601: if (r->mstackpos < 0) {
3602: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "shift");
3603: return ROFF_IGN;
3604: }
3605: ctx = r->mstack + r->mstackpos;
3606: if (levels > ctx->argc) {
3607: mandoc_vmsg(MANDOCERR_SHIFT, r->parse,
3608: ln, pos, "%d, but max is %d", levels, ctx->argc);
3609: levels = ctx->argc;
3610: }
3611: if (levels == 0)
3612: return ROFF_IGN;
3613: for (i = 0; i < levels; i++)
3614: free(ctx->argv[i]);
3615: ctx->argc -= levels;
3616: for (i = 0; i < ctx->argc; i++)
3617: ctx->argv[i] = ctx->argv[i + levels];
3618: return ROFF_IGN;
3619: }
3620:
1.212 schwarze 3621: static int
1.14 schwarze 3622: roff_so(ROFF_ARGS)
3623: {
1.121 schwarze 3624: char *name, *cp;
1.15 schwarze 3625:
1.110 schwarze 3626: name = buf->buf + pos;
1.97 schwarze 3627: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3628:
1.22 schwarze 3629: /*
3630: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3631: * opening anything that's not in our cwd or anything beneath
3632: * it. Thus, explicitly disallow traversing up the file-system
3633: * or using absolute paths.
3634: */
3635:
1.110 schwarze 3636: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3637: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3638: ".so %s", name);
1.121 schwarze 3639: buf->sz = mandoc_asprintf(&cp,
3640: ".sp\nSee the file %s.\n.sp", name) + 1;
3641: free(buf->buf);
3642: buf->buf = cp;
3643: *offs = 0;
1.149 schwarze 3644: return ROFF_REPARSE;
1.14 schwarze 3645: }
3646:
3647: *offs = pos;
1.149 schwarze 3648: return ROFF_SO;
1.7 schwarze 3649: }
3650:
1.138 schwarze 3651: /* --- user defined strings and macros ------------------------------------ */
3652:
1.212 schwarze 3653: static int
1.16 schwarze 3654: roff_userdef(ROFF_ARGS)
1.12 schwarze 3655: {
1.211 schwarze 3656: struct mctx *ctx;
3657: char *arg, *ap, *dst, *src;
3658: size_t sz;
3659:
3660: /* Initialize a new macro stack context. */
3661:
3662: if (++r->mstackpos == r->mstacksz) {
3663: r->mstack = mandoc_recallocarray(r->mstack,
3664: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3665: r->mstacksz += 8;
3666: }
3667: ctx = r->mstack + r->mstackpos;
3668: ctx->argsz = 0;
3669: ctx->argc = 0;
3670: ctx->argv = NULL;
3671:
3672: /*
3673: * Collect pointers to macro argument strings,
3674: * NUL-terminating them and escaping quotes.
3675: */
3676:
3677: src = buf->buf + pos;
3678: while (*src != '\0') {
3679: if (ctx->argc == ctx->argsz) {
3680: ctx->argsz += 8;
3681: ctx->argv = mandoc_reallocarray(ctx->argv,
3682: ctx->argsz, sizeof(*ctx->argv));
3683: }
3684: arg = mandoc_getarg(r->parse, &src, ln, &pos);
3685: sz = 1; /* For the terminating NUL. */
3686: for (ap = arg; *ap != '\0'; ap++)
3687: sz += *ap == '"' ? 4 : 1;
3688: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3689: for (ap = arg; *ap != '\0'; ap++) {
3690: if (*ap == '"') {
3691: memcpy(dst, "\\(dq", 4);
3692: dst += 4;
3693: } else
3694: *dst++ = *ap;
1.16 schwarze 3695: }
1.211 schwarze 3696: *dst = '\0';
1.209 schwarze 3697: }
3698:
1.211 schwarze 3699: /* Replace the macro invocation by the macro definition. */
1.135 schwarze 3700:
1.110 schwarze 3701: free(buf->buf);
1.211 schwarze 3702: buf->buf = mandoc_strdup(r->current_string);
3703: buf->sz = strlen(buf->buf) + 1;
1.120 schwarze 3704: *offs = 0;
1.16 schwarze 3705:
1.149 schwarze 3706: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.212 schwarze 3707: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.12 schwarze 3708: }
1.28 schwarze 3709:
1.178 schwarze 3710: /*
3711: * Calling a high-level macro that was renamed with .rn.
3712: * r->current_string has already been set up by roff_parse().
3713: */
1.212 schwarze 3714: static int
1.178 schwarze 3715: roff_renamed(ROFF_ARGS)
3716: {
3717: char *nbuf;
3718:
1.187 schwarze 3719: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3720: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3721: free(buf->buf);
3722: buf->buf = nbuf;
1.201 schwarze 3723: *offs = 0;
1.178 schwarze 3724: return ROFF_CONT;
3725: }
3726:
1.85 schwarze 3727: static size_t
1.28 schwarze 3728: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3729: {
3730: char *name, *cp;
1.85 schwarze 3731: size_t namesz;
1.28 schwarze 3732:
3733: name = *cpp;
3734: if ('\0' == *name)
1.149 schwarze 3735: return 0;
1.28 schwarze 3736:
1.85 schwarze 3737: /* Read until end of name and terminate it with NUL. */
3738: for (cp = name; 1; cp++) {
3739: if ('\0' == *cp || ' ' == *cp) {
3740: namesz = cp - name;
3741: break;
3742: }
1.28 schwarze 3743: if ('\\' != *cp)
3744: continue;
1.88 schwarze 3745: namesz = cp - name;
3746: if ('{' == cp[1] || '}' == cp[1])
3747: break;
1.28 schwarze 3748: cp++;
3749: if ('\\' == *cp)
3750: continue;
1.97 schwarze 3751: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3752: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3753: mandoc_escape((const char **)&cp, NULL, NULL);
3754: break;
1.28 schwarze 3755: }
3756:
3757: /* Read past spaces. */
3758: while (' ' == *cp)
3759: cp++;
3760:
3761: *cpp = cp;
1.149 schwarze 3762: return namesz;
1.28 schwarze 3763: }
3764:
1.16 schwarze 3765: /*
3766: * Store *string into the user-defined string called *name.
3767: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3768: * append == 0: replace mode
3769: * append == 1: single-line append mode
3770: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3771: */
1.8 schwarze 3772: static void
1.16 schwarze 3773: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3774: int append)
1.7 schwarze 3775: {
1.187 schwarze 3776: size_t namesz;
1.42 schwarze 3777:
1.187 schwarze 3778: namesz = strlen(name);
3779: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3780: string ? strlen(string) : 0, append);
1.187 schwarze 3781: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3782: }
3783:
3784: static void
3785: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3786: const char *string, size_t stringsz, int append)
1.42 schwarze 3787: {
3788: struct roffkv *n;
3789: char *c;
3790: int i;
3791: size_t oldch, newch;
1.7 schwarze 3792:
1.16 schwarze 3793: /* Search for an existing string with the same name. */
1.42 schwarze 3794: n = *r;
3795:
1.84 schwarze 3796: while (n && (namesz != n->key.sz ||
3797: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3798: n = n->next;
1.8 schwarze 3799:
3800: if (NULL == n) {
1.16 schwarze 3801: /* Create a new string table entry. */
1.42 schwarze 3802: n = mandoc_malloc(sizeof(struct roffkv));
3803: n->key.p = mandoc_strndup(name, namesz);
3804: n->key.sz = namesz;
3805: n->val.p = NULL;
3806: n->val.sz = 0;
3807: n->next = *r;
3808: *r = n;
1.66 schwarze 3809: } else if (0 == append) {
1.42 schwarze 3810: free(n->val.p);
3811: n->val.p = NULL;
3812: n->val.sz = 0;
1.16 schwarze 3813: }
3814:
3815: if (NULL == string)
3816: return;
3817:
3818: /*
3819: * One additional byte for the '\n' in multiline mode,
3820: * and one for the terminating '\0'.
3821: */
1.66 schwarze 3822: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3823:
3824: if (NULL == n->val.p) {
3825: n->val.p = mandoc_malloc(newch);
3826: *n->val.p = '\0';
1.16 schwarze 3827: oldch = 0;
3828: } else {
1.42 schwarze 3829: oldch = n->val.sz;
3830: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3831: }
3832:
3833: /* Skip existing content in the destination buffer. */
1.42 schwarze 3834: c = n->val.p + (int)oldch;
1.16 schwarze 3835:
3836: /* Append new content to the destination buffer. */
1.42 schwarze 3837: i = 0;
3838: while (i < (int)stringsz) {
1.16 schwarze 3839: /*
3840: * Rudimentary roff copy mode:
3841: * Handle escaped backslashes.
3842: */
1.42 schwarze 3843: if ('\\' == string[i] && '\\' == string[i + 1])
3844: i++;
3845: *c++ = string[i++];
1.16 schwarze 3846: }
1.8 schwarze 3847:
1.16 schwarze 3848: /* Append terminating bytes. */
1.66 schwarze 3849: if (1 < append)
1.16 schwarze 3850: *c++ = '\n';
1.42 schwarze 3851:
1.16 schwarze 3852: *c = '\0';
1.42 schwarze 3853: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3854: }
3855:
1.8 schwarze 3856: static const char *
1.197 schwarze 3857: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 3858: int *deftype)
1.7 schwarze 3859: {
1.187 schwarze 3860: const struct roffkv *n;
1.197 schwarze 3861: int found, i;
1.187 schwarze 3862: enum roff_tok tok;
3863:
1.197 schwarze 3864: found = 0;
3865: for (n = r->strtab; n != NULL; n = n->next) {
3866: if (strncmp(name, n->key.p, len) != 0 ||
3867: n->key.p[len] != '\0' || n->val.p == NULL)
3868: continue;
3869: if (*deftype & ROFFDEF_USER) {
3870: *deftype = ROFFDEF_USER;
3871: return n->val.p;
3872: } else {
3873: found = 1;
3874: break;
3875: }
3876: }
3877: for (n = r->rentab; n != NULL; n = n->next) {
3878: if (strncmp(name, n->key.p, len) != 0 ||
3879: n->key.p[len] != '\0' || n->val.p == NULL)
3880: continue;
3881: if (*deftype & ROFFDEF_REN) {
3882: *deftype = ROFFDEF_REN;
3883: return n->val.p;
3884: } else {
3885: found = 1;
3886: break;
1.187 schwarze 3887: }
3888: }
1.197 schwarze 3889: for (i = 0; i < PREDEFS_MAX; i++) {
3890: if (strncmp(name, predefs[i].name, len) != 0 ||
3891: predefs[i].name[len] != '\0')
3892: continue;
3893: if (*deftype & ROFFDEF_PRE) {
3894: *deftype = ROFFDEF_PRE;
3895: return predefs[i].str;
3896: } else {
3897: found = 1;
3898: break;
1.187 schwarze 3899: }
3900: }
1.197 schwarze 3901: if (r->man->macroset != MACROSET_MAN) {
3902: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3903: if (strncmp(name, roff_name[tok], len) != 0 ||
3904: roff_name[tok][len] != '\0')
3905: continue;
3906: if (*deftype & ROFFDEF_STD) {
3907: *deftype = ROFFDEF_STD;
3908: return NULL;
3909: } else {
3910: found = 1;
3911: break;
1.187 schwarze 3912: }
3913: }
3914: }
1.197 schwarze 3915: if (r->man->macroset != MACROSET_MDOC) {
3916: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3917: if (strncmp(name, roff_name[tok], len) != 0 ||
3918: roff_name[tok][len] != '\0')
3919: continue;
3920: if (*deftype & ROFFDEF_STD) {
3921: *deftype = ROFFDEF_STD;
3922: return NULL;
3923: } else {
3924: found = 1;
3925: break;
1.187 schwarze 3926: }
3927: }
1.197 schwarze 3928: }
3929:
3930: if (found == 0 && *deftype != ROFFDEF_ANY) {
3931: if (*deftype & ROFFDEF_REN) {
3932: /*
3933: * This might still be a request,
3934: * so do not treat it as undefined yet.
3935: */
3936: *deftype = ROFFDEF_UNDEF;
3937: return NULL;
1.187 schwarze 3938: }
1.197 schwarze 3939:
3940: /* Using an undefined string defines it to be empty. */
3941:
3942: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3943: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 3944: }
1.197 schwarze 3945:
1.187 schwarze 3946: *deftype = 0;
1.149 schwarze 3947: return NULL;
1.7 schwarze 3948: }
3949:
1.8 schwarze 3950: static void
1.42 schwarze 3951: roff_freestr(struct roffkv *r)
1.7 schwarze 3952: {
1.42 schwarze 3953: struct roffkv *n, *nn;
1.7 schwarze 3954:
1.42 schwarze 3955: for (n = r; n; n = nn) {
3956: free(n->key.p);
3957: free(n->val.p);
1.7 schwarze 3958: nn = n->next;
3959: free(n);
3960: }
1.27 schwarze 3961: }
1.138 schwarze 3962:
3963: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 3964:
3965: /*
3966: * Duplicate an input string, making the appropriate character
3967: * conversations (as stipulated by `tr') along the way.
3968: * Returns a heap-allocated string with all the replacements made.
3969: */
3970: char *
3971: roff_strdup(const struct roff *r, const char *p)
3972: {
3973: const struct roffkv *cp;
3974: char *res;
3975: const char *pp;
3976: size_t ssz, sz;
3977: enum mandoc_esc esc;
3978:
3979: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3980: return mandoc_strdup(p);
1.42 schwarze 3981: else if ('\0' == *p)
1.149 schwarze 3982: return mandoc_strdup("");
1.42 schwarze 3983:
3984: /*
3985: * Step through each character looking for term matches
3986: * (remember that a `tr' can be invoked with an escape, which is
3987: * a glyph but the escape is multi-character).
3988: * We only do this if the character hash has been initialised
3989: * and the string is >0 length.
3990: */
3991:
3992: res = NULL;
3993: ssz = 0;
3994:
3995: while ('\0' != *p) {
1.161 schwarze 3996: assert((unsigned int)*p < 128);
3997: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3998: sz = r->xtab[(int)*p].sz;
3999: res = mandoc_realloc(res, ssz + sz + 1);
4000: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4001: ssz += sz;
4002: p++;
4003: continue;
4004: } else if ('\\' != *p) {
4005: res = mandoc_realloc(res, ssz + 2);
4006: res[ssz++] = *p++;
4007: continue;
4008: }
4009:
4010: /* Search for term matches. */
4011: for (cp = r->xmbtab; cp; cp = cp->next)
4012: if (0 == strncmp(p, cp->key.p, cp->key.sz))
4013: break;
4014:
4015: if (NULL != cp) {
4016: /*
4017: * A match has been found.
4018: * Append the match to the array and move
4019: * forward by its keysize.
4020: */
1.80 schwarze 4021: res = mandoc_realloc(res,
4022: ssz + cp->val.sz + 1);
1.42 schwarze 4023: memcpy(res + ssz, cp->val.p, cp->val.sz);
4024: ssz += cp->val.sz;
4025: p += (int)cp->key.sz;
4026: continue;
4027: }
4028:
4029: /*
4030: * Handle escapes carefully: we need to copy
4031: * over just the escape itself, or else we might
4032: * do replacements within the escape itself.
4033: * Make sure to pass along the bogus string.
4034: */
4035: pp = p++;
4036: esc = mandoc_escape(&p, NULL, NULL);
4037: if (ESCAPE_ERROR == esc) {
4038: sz = strlen(pp);
4039: res = mandoc_realloc(res, ssz + sz + 1);
4040: memcpy(res + ssz, pp, sz);
4041: break;
4042: }
1.80 schwarze 4043: /*
4044: * We bail out on bad escapes.
1.42 schwarze 4045: * No need to warn: we already did so when
4046: * roff_res() was called.
4047: */
4048: sz = (int)(p - pp);
4049: res = mandoc_realloc(res, ssz + sz + 1);
4050: memcpy(res + ssz, pp, sz);
4051: ssz += sz;
4052: }
4053:
4054: res[(int)ssz] = '\0';
1.149 schwarze 4055: return res;
1.99 schwarze 4056: }
4057:
4058: int
4059: roff_getformat(const struct roff *r)
4060: {
4061:
1.149 schwarze 4062: return r->format;
1.48 schwarze 4063: }
4064:
4065: /*
1.80 schwarze 4066: * Find out whether a line is a macro line or not.
1.48 schwarze 4067: * If it is, adjust the current position and return one; if it isn't,
4068: * return zero and don't change the current position.
4069: * If the control character has been set with `.cc', then let that grain
4070: * precedence.
4071: * This is slighly contrary to groff, where using the non-breaking
4072: * control character when `cc' has been invoked will cause the
4073: * non-breaking macro contents to be printed verbatim.
4074: */
4075: int
4076: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4077: {
4078: int pos;
4079:
4080: pos = *ppos;
4081:
1.175 schwarze 4082: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 4083: pos++;
1.175 schwarze 4084: else if (r->control != '\0')
1.149 schwarze 4085: return 0;
1.48 schwarze 4086: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4087: pos += 2;
4088: else if ('.' == cp[pos] || '\'' == cp[pos])
4089: pos++;
4090: else
1.149 schwarze 4091: return 0;
1.48 schwarze 4092:
4093: while (' ' == cp[pos] || '\t' == cp[pos])
4094: pos++;
4095:
4096: *ppos = pos;
1.149 schwarze 4097: return 1;
1.1 schwarze 4098: }
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