Annotation of src/usr.bin/mandoc/roff.c, Revision 1.187
1.187 ! schwarze 1: /* $OpenBSD: roff.c,v 1.186 2017/06/17 23:06:43 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.159 schwarze 4: * Copyright (c) 2010-2015, 2017 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)
! 47:
1.138 schwarze 48: /* --- data types --------------------------------------------------------- */
49:
1.41 schwarze 50: /*
1.42 schwarze 51: * An incredibly-simple string buffer.
52: */
1.8 schwarze 53: struct roffstr {
1.42 schwarze 54: char *p; /* nil-terminated buffer */
55: size_t sz; /* saved strlen(p) */
56: };
57:
58: /*
59: * A key-value roffstr pair as part of a singly-linked list.
60: */
61: struct roffkv {
62: struct roffstr key;
63: struct roffstr val;
64: struct roffkv *next; /* next in list */
1.8 schwarze 65: };
66:
1.52 schwarze 67: /*
68: * A single number register as part of a singly-linked list.
69: */
70: struct roffreg {
71: struct roffstr key;
1.53 schwarze 72: int val;
1.52 schwarze 73: struct roffreg *next;
74: };
75:
1.167 schwarze 76: /*
77: * Association of request and macro names with token IDs.
78: */
79: struct roffreq {
80: enum roff_tok tok;
81: char name[];
82: };
83:
1.1 schwarze 84: struct roff {
1.35 schwarze 85: struct mparse *parse; /* parse point */
1.168 schwarze 86: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 87: struct roffnode *last; /* leaf of stack */
1.96 schwarze 88: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 89: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 90: struct roffreg *regtab; /* number registers */
1.42 schwarze 91: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 92: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 93: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
94: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 95: const char *current_string; /* value of last called user macro */
1.27 schwarze 96: struct tbl_node *first_tbl; /* first table parsed */
97: struct tbl_node *last_tbl; /* last table parsed */
98: struct tbl_node *tbl; /* current table being parsed */
1.32 schwarze 99: struct eqn_node *last_eqn; /* last equation parsed */
100: struct eqn_node *first_eqn; /* first equation parsed */
101: struct eqn_node *eqn; /* current equation being parsed */
1.102 schwarze 102: int eqn_inline; /* current equation is inline */
1.96 schwarze 103: int options; /* parse options */
104: int rstacksz; /* current size limit of rstack */
105: int rstackpos; /* position in rstack */
1.99 schwarze 106: int format; /* current file in mdoc or man format */
1.145 schwarze 107: int argc; /* number of args of the last macro */
1.96 schwarze 108: char control; /* control character */
1.175 schwarze 109: char escape; /* escape character */
1.1 schwarze 110: };
111:
112: struct roffnode {
1.166 schwarze 113: enum roff_tok tok; /* type of node */
1.1 schwarze 114: struct roffnode *parent; /* up one in stack */
115: int line; /* parse line */
116: int col; /* parse col */
1.16 schwarze 117: char *name; /* node name, e.g. macro name */
1.2 schwarze 118: char *end; /* end-rules: custom token */
119: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 120: int rule; /* current evaluation rule */
1.1 schwarze 121: };
122:
123: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 124: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 125: struct buf *buf, /* input buffer */ \
1.1 schwarze 126: int ln, /* parse line */ \
1.2 schwarze 127: int ppos, /* original pos in buffer */ \
128: int pos, /* current pos in buffer */ \
129: int *offs /* reset offset of buffer data */
1.1 schwarze 130:
131: typedef enum rofferr (*roffproc)(ROFF_ARGS);
132:
133: struct roffmac {
1.2 schwarze 134: roffproc proc; /* process new macro */
135: roffproc text; /* process as child text of macro */
136: roffproc sub; /* process as child of macro */
137: int flags;
138: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 139: };
140:
1.37 schwarze 141: struct predef {
142: const char *name; /* predefined input name */
143: const char *str; /* replacement symbol */
144: };
145:
146: #define PREDEF(__name, __str) \
147: { (__name), (__str) },
148:
1.138 schwarze 149: /* --- function prototypes ------------------------------------------------ */
150:
1.42 schwarze 151: static void roffnode_cleanscope(struct roff *);
152: static void roffnode_pop(struct roff *);
1.166 schwarze 153: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 154: const char *, int, int);
1.183 schwarze 155: static enum rofferr roff_als(ROFF_ARGS);
1.2 schwarze 156: static enum rofferr roff_block(ROFF_ARGS);
157: static enum rofferr roff_block_text(ROFF_ARGS);
158: static enum rofferr roff_block_sub(ROFF_ARGS);
1.168 schwarze 159: static enum rofferr roff_br(ROFF_ARGS);
1.2 schwarze 160: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 161: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 162: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 163: static enum rofferr roff_cond(ROFF_ARGS);
164: static enum rofferr roff_cond_text(ROFF_ARGS);
165: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 166: static enum rofferr roff_ds(ROFF_ARGS);
1.175 schwarze 167: static enum rofferr roff_ec(ROFF_ARGS);
168: static enum rofferr roff_eo(ROFF_ARGS);
1.110 schwarze 169: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 170: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 171: static int roff_evalnum(struct roff *, int,
172: const char *, int *, int *, int);
173: static int roff_evalpar(struct roff *, int,
1.133 schwarze 174: const char *, int *, int *, int);
1.71 schwarze 175: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 176: static void roff_free1(struct roff *);
1.52 schwarze 177: static void roff_freereg(struct roffreg *);
1.42 schwarze 178: static void roff_freestr(struct roffkv *);
1.85 schwarze 179: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 180: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 181: static int roff_getop(const char *, int *, char *);
1.53 schwarze 182: static int roff_getregn(const struct roff *,
183: const char *, size_t);
1.145 schwarze 184: static int roff_getregro(const struct roff *,
185: const char *name);
1.80 schwarze 186: static const char *roff_getstrn(const struct roff *,
1.187 ! schwarze 187: const char *, size_t, int *);
1.143 schwarze 188: static int roff_hasregn(const struct roff *,
189: const char *, size_t);
1.123 schwarze 190: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 191: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 192: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 193: static void roff_man_alloc1(struct roff_man *);
194: static void roff_man_free1(struct roff_man *);
1.172 schwarze 195: static enum rofferr roff_manyarg(ROFF_ARGS);
1.6 schwarze 196: static enum rofferr roff_nr(ROFF_ARGS);
1.169 schwarze 197: static enum rofferr roff_onearg(ROFF_ARGS);
1.166 schwarze 198: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 199: int, int);
1.177 schwarze 200: static enum rofferr roff_parsetext(struct roff *, struct buf *,
201: int, int *);
1.178 schwarze 202: static enum rofferr roff_renamed(ROFF_ARGS);
1.110 schwarze 203: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 204: static enum rofferr roff_rm(ROFF_ARGS);
1.178 schwarze 205: static enum rofferr roff_rn(ROFF_ARGS);
1.76 schwarze 206: static enum rofferr roff_rr(ROFF_ARGS);
1.8 schwarze 207: static void roff_setstr(struct roff *,
1.16 schwarze 208: const char *, const char *, int);
1.80 schwarze 209: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 210: size_t, const char *, size_t, int);
1.14 schwarze 211: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 212: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 213: static enum rofferr roff_Dd(ROFF_ARGS);
1.27 schwarze 214: static enum rofferr roff_TE(ROFF_ARGS);
215: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 216: static enum rofferr roff_EQ(ROFF_ARGS);
217: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 218: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 219: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 220: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 221:
1.138 schwarze 222: /* --- constant data ------------------------------------------------------ */
223:
1.133 schwarze 224: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
225: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
226:
1.166 schwarze 227: const char *__roff_name[MAN_MAX + 1] = {
1.177 schwarze 228: "br", "ce", "ft", "ll",
1.184 schwarze 229: "mc", "po", "rj", "sp",
230: "ta", "ti", NULL,
1.166 schwarze 231: "ab", "ad", "af", "aln",
232: "als", "am", "am1", "ami",
233: "ami1", "as", "as1", "asciify",
234: "backtrace", "bd", "bleedat", "blm",
235: "box", "boxa", "bp", "BP",
236: "break", "breakchar", "brnl", "brp",
1.177 schwarze 237: "brpnl", "c2", "cc",
1.166 schwarze 238: "cf", "cflags", "ch", "char",
239: "chop", "class", "close", "CL",
240: "color", "composite", "continue", "cp",
241: "cropat", "cs", "cu", "da",
242: "dch", "Dd", "de", "de1",
243: "defcolor", "dei", "dei1", "device",
244: "devicem", "di", "do", "ds",
245: "ds1", "dwh", "dt", "ec",
246: "ecr", "ecs", "el", "em",
247: "EN", "eo", "EP", "EQ",
248: "errprint", "ev", "evc", "ex",
249: "fallback", "fam", "fc", "fchar",
250: "fcolor", "fdeferlig", "feature", "fkern",
251: "fl", "flig", "fp", "fps",
252: "fschar", "fspacewidth", "fspecial", "ftr",
253: "fzoom", "gcolor", "hc", "hcode",
254: "hidechar", "hla", "hlm", "hpf",
255: "hpfa", "hpfcode", "hw", "hy",
256: "hylang", "hylen", "hym", "hypp",
257: "hys", "ie", "if", "ig",
258: "index", "it", "itc", "IX",
259: "kern", "kernafter", "kernbefore", "kernpair",
260: "lc", "lc_ctype", "lds", "length",
261: "letadj", "lf", "lg", "lhang",
262: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 263: "ls", "lsm", "lt",
1.166 schwarze 264: "mediasize", "minss", "mk", "mso",
265: "na", "ne", "nh", "nhychar",
266: "nm", "nn", "nop", "nr",
267: "nrf", "nroff", "ns", "nx",
268: "open", "opena", "os", "output",
269: "padj", "papersize", "pc", "pev",
270: "pi", "PI", "pl", "pm",
1.184 schwarze 271: "pn", "pnr", "ps",
1.166 schwarze 272: "psbb", "pshape", "pso", "ptr",
273: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 274: "return", "rfschar", "rhang",
1.166 schwarze 275: "rm", "rn", "rnn", "rr",
276: "rs", "rt", "schar", "sentchar",
277: "shc", "shift", "sizes", "so",
278: "spacewidth", "special", "spreadwarn", "ss",
279: "sty", "substring", "sv", "sy",
1.172 schwarze 280: "T&", "tc", "TE",
1.173 schwarze 281: "TH", "tkf", "tl",
1.166 schwarze 282: "tm", "tm1", "tmc", "tr",
283: "track", "transchar", "trf", "trimat",
284: "trin", "trnt", "troff", "TS",
285: "uf", "ul", "unformat", "unwatch",
286: "unwatchn", "vpt", "vs", "warn",
287: "warnscale", "watch", "watchlength", "watchn",
288: "wh", "while", "write", "writec",
289: "writem", "xflag", ".", NULL,
1.178 schwarze 290: NULL, "text",
1.166 schwarze 291: "Dd", "Dt", "Os", "Sh",
292: "Ss", "Pp", "D1", "Dl",
293: "Bd", "Ed", "Bl", "El",
294: "It", "Ad", "An", "Ap",
295: "Ar", "Cd", "Cm", "Dv",
296: "Er", "Ev", "Ex", "Fa",
297: "Fd", "Fl", "Fn", "Ft",
298: "Ic", "In", "Li", "Nd",
299: "Nm", "Op", "Ot", "Pa",
300: "Rv", "St", "Va", "Vt",
301: "Xr", "%A", "%B", "%D",
302: "%I", "%J", "%N", "%O",
303: "%P", "%R", "%T", "%V",
304: "Ac", "Ao", "Aq", "At",
305: "Bc", "Bf", "Bo", "Bq",
306: "Bsx", "Bx", "Db", "Dc",
307: "Do", "Dq", "Ec", "Ef",
308: "Em", "Eo", "Fx", "Ms",
309: "No", "Ns", "Nx", "Ox",
310: "Pc", "Pf", "Po", "Pq",
311: "Qc", "Ql", "Qo", "Qq",
312: "Re", "Rs", "Sc", "So",
313: "Sq", "Sm", "Sx", "Sy",
314: "Tn", "Ux", "Xc", "Xo",
315: "Fo", "Fc", "Oo", "Oc",
316: "Bk", "Ek", "Bt", "Hf",
317: "Fr", "Ud", "Lb", "Lp",
318: "Lk", "Mt", "Brq", "Bro",
319: "Brc", "%C", "Es", "En",
1.171 schwarze 320: "Dx", "%Q", "%U", "Ta",
321: NULL,
1.166 schwarze 322: "TH", "SH", "SS", "TP",
323: "LP", "PP", "P", "IP",
324: "HP", "SM", "SB", "BI",
325: "IB", "BR", "RB", "R",
326: "B", "I", "IR", "RI",
1.171 schwarze 327: "nf", "fi",
1.166 schwarze 328: "RE", "RS", "DT", "UC",
1.169 schwarze 329: "PD", "AT", "in",
1.166 schwarze 330: "OP", "EX", "EE", "UR",
1.170 schwarze 331: "UE", NULL
1.166 schwarze 332: };
333: const char *const *roff_name = __roff_name;
334:
335: static struct roffmac roffs[TOKEN_NONE] = {
1.168 schwarze 336: { roff_br, NULL, NULL, 0 }, /* br */
1.177 schwarze 337: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.169 schwarze 338: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 339: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 340: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.184 schwarze 341: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 342: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 343: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 344: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 345: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 346: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 347: { roff_unsupp, NULL, NULL, 0 }, /* ab */
348: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
349: { roff_line_ignore, NULL, NULL, 0 }, /* af */
350: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 351: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 352: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
353: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
354: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
355: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
356: { roff_ds, NULL, NULL, 0 }, /* as */
357: { roff_ds, NULL, NULL, 0 }, /* as1 */
358: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
359: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
360: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
361: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
362: { roff_unsupp, NULL, NULL, 0 }, /* blm */
363: { roff_unsupp, NULL, NULL, 0 }, /* box */
364: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
365: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
366: { roff_unsupp, NULL, NULL, 0 }, /* BP */
367: { roff_unsupp, NULL, NULL, 0 }, /* break */
368: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
369: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 schwarze 370: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 371: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
372: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
373: { roff_cc, NULL, NULL, 0 }, /* cc */
374: { roff_insec, NULL, NULL, 0 }, /* cf */
375: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
376: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
377: { roff_unsupp, NULL, NULL, 0 }, /* char */
378: { roff_unsupp, NULL, NULL, 0 }, /* chop */
379: { roff_line_ignore, NULL, NULL, 0 }, /* class */
380: { roff_insec, NULL, NULL, 0 }, /* close */
381: { roff_unsupp, NULL, NULL, 0 }, /* CL */
382: { roff_line_ignore, NULL, NULL, 0 }, /* color */
383: { roff_unsupp, NULL, NULL, 0 }, /* composite */
384: { roff_unsupp, NULL, NULL, 0 }, /* continue */
385: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
386: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
387: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
388: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
389: { roff_unsupp, NULL, NULL, 0 }, /* da */
390: { roff_unsupp, NULL, NULL, 0 }, /* dch */
391: { roff_Dd, NULL, NULL, 0 }, /* Dd */
392: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
393: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
394: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
395: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
396: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
397: { roff_unsupp, NULL, NULL, 0 }, /* device */
398: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
399: { roff_unsupp, NULL, NULL, 0 }, /* di */
400: { roff_unsupp, NULL, NULL, 0 }, /* do */
401: { roff_ds, NULL, NULL, 0 }, /* ds */
402: { roff_ds, NULL, NULL, 0 }, /* ds1 */
403: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
404: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 405: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 406: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
407: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
408: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
409: { roff_unsupp, NULL, NULL, 0 }, /* em */
410: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 411: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 412: { roff_unsupp, NULL, NULL, 0 }, /* EP */
413: { roff_EQ, NULL, NULL, 0 }, /* EQ */
414: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
415: { roff_unsupp, NULL, NULL, 0 }, /* ev */
416: { roff_unsupp, NULL, NULL, 0 }, /* evc */
417: { roff_unsupp, NULL, NULL, 0 }, /* ex */
418: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
419: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
420: { roff_unsupp, NULL, NULL, 0 }, /* fc */
421: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
422: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
423: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
424: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
425: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
426: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
427: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
428: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
429: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
430: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
431: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
432: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
433: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
434: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
435: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
436: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
437: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
438: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
439: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
440: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
441: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
442: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
443: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
444: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
445: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
446: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
447: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
448: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
449: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
450: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
451: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
452: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
453: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
454: { roff_unsupp, NULL, NULL, 0 }, /* index */
455: { roff_it, NULL, NULL, 0 }, /* it */
456: { roff_unsupp, NULL, NULL, 0 }, /* itc */
457: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
458: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
459: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
460: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
461: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
462: { roff_unsupp, NULL, NULL, 0 }, /* lc */
463: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
464: { roff_unsupp, NULL, NULL, 0 }, /* lds */
465: { roff_unsupp, NULL, NULL, 0 }, /* length */
466: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
467: { roff_insec, NULL, NULL, 0 }, /* lf */
468: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
469: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
470: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
471: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
472: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
473: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
474: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
475: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
476: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
477: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
478: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
479: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
480: { roff_insec, NULL, NULL, 0 }, /* mso */
481: { roff_line_ignore, NULL, NULL, 0 }, /* na */
482: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
483: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
484: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
485: { roff_unsupp, NULL, NULL, 0 }, /* nm */
486: { roff_unsupp, NULL, NULL, 0 }, /* nn */
487: { roff_unsupp, NULL, NULL, 0 }, /* nop */
488: { roff_nr, NULL, NULL, 0 }, /* nr */
489: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
490: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
491: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
492: { roff_insec, NULL, NULL, 0 }, /* nx */
493: { roff_insec, NULL, NULL, 0 }, /* open */
494: { roff_insec, NULL, NULL, 0 }, /* opena */
495: { roff_line_ignore, NULL, NULL, 0 }, /* os */
496: { roff_unsupp, NULL, NULL, 0 }, /* output */
497: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
498: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
499: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
500: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
501: { roff_insec, NULL, NULL, 0 }, /* pi */
502: { roff_unsupp, NULL, NULL, 0 }, /* PI */
503: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
504: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
505: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
506: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
507: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
508: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
509: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
510: { roff_insec, NULL, NULL, 0 }, /* pso */
511: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
512: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
513: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
514: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
515: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
516: { roff_unsupp, NULL, NULL, 0 }, /* return */
517: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
518: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
519: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 520: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 521: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
522: { roff_rr, NULL, NULL, 0 }, /* rr */
523: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
524: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
525: { roff_unsupp, NULL, NULL, 0 }, /* schar */
526: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
527: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
528: { roff_unsupp, NULL, NULL, 0 }, /* shift */
529: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
530: { roff_so, NULL, NULL, 0 }, /* so */
531: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
532: { roff_line_ignore, NULL, NULL, 0 }, /* special */
533: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
534: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
535: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
536: { roff_unsupp, NULL, NULL, 0 }, /* substring */
537: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
538: { roff_insec, NULL, NULL, 0 }, /* sy */
539: { roff_T_, NULL, NULL, 0 }, /* T& */
540: { roff_unsupp, NULL, NULL, 0 }, /* tc */
541: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 ! schwarze 542: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 543: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
544: { roff_unsupp, NULL, NULL, 0 }, /* tl */
545: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
546: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
547: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
548: { roff_tr, NULL, NULL, 0 }, /* tr */
549: { roff_line_ignore, NULL, NULL, 0 }, /* track */
550: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
551: { roff_insec, NULL, NULL, 0 }, /* trf */
552: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
553: { roff_unsupp, NULL, NULL, 0 }, /* trin */
554: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
555: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
556: { roff_TS, NULL, NULL, 0 }, /* TS */
557: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
558: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
559: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
560: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
561: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
562: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
563: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
564: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
565: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
566: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
567: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
568: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
569: { roff_unsupp, NULL, NULL, 0 }, /* wh */
570: { roff_unsupp, NULL, NULL, 0 }, /* while */
571: { roff_insec, NULL, NULL, 0 }, /* write */
572: { roff_insec, NULL, NULL, 0 }, /* writec */
573: { roff_insec, NULL, NULL, 0 }, /* writem */
574: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
575: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 576: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 577: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 578: };
579:
1.37 schwarze 580: /* Array of injected predefined strings. */
581: #define PREDEFS_MAX 38
582: static const struct predef predefs[PREDEFS_MAX] = {
583: #include "predefs.in"
584: };
585:
1.177 schwarze 586: static int roffce_lines; /* number of input lines to center */
587: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 588: static int roffit_lines; /* number of lines to delay */
589: static char *roffit_macro; /* nil-terminated macro line */
590:
1.80 schwarze 591:
1.138 schwarze 592: /* --- request table ------------------------------------------------------ */
593:
1.167 schwarze 594: struct ohash *
595: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 596: {
1.167 schwarze 597: struct ohash *htab;
598: struct roffreq *req;
599: enum roff_tok tok;
600: size_t sz;
601: unsigned int slot;
1.3 schwarze 602:
1.167 schwarze 603: htab = mandoc_malloc(sizeof(*htab));
604: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 605:
1.167 schwarze 606: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 607: if (roff_name[tok] == NULL)
608: continue;
1.167 schwarze 609: sz = strlen(roff_name[tok]);
610: req = mandoc_malloc(sizeof(*req) + sz + 1);
611: req->tok = tok;
612: memcpy(req->name, roff_name[tok], sz + 1);
613: slot = ohash_qlookup(htab, req->name);
614: ohash_insert(htab, slot, req);
1.3 schwarze 615: }
1.167 schwarze 616: return htab;
1.3 schwarze 617: }
618:
1.167 schwarze 619: void
620: roffhash_free(struct ohash *htab)
1.1 schwarze 621: {
1.167 schwarze 622: struct roffreq *req;
623: unsigned int slot;
1.1 schwarze 624:
1.167 schwarze 625: if (htab == NULL)
626: return;
627: for (req = ohash_first(htab, &slot); req != NULL;
628: req = ohash_next(htab, &slot))
629: free(req);
630: ohash_delete(htab);
631: free(htab);
632: }
633:
634: enum roff_tok
635: roffhash_find(struct ohash *htab, const char *name, size_t sz)
636: {
637: struct roffreq *req;
638: const char *end;
639:
640: if (sz) {
641: end = name + sz;
642: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
643: } else
644: req = ohash_find(htab, ohash_qlookup(htab, name));
645: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 646: }
647:
1.138 schwarze 648: /* --- stack of request blocks -------------------------------------------- */
649:
1.1 schwarze 650: /*
651: * Pop the current node off of the stack of roff instructions currently
652: * pending.
653: */
654: static void
655: roffnode_pop(struct roff *r)
656: {
657: struct roffnode *p;
658:
1.2 schwarze 659: assert(r->last);
1.80 schwarze 660: p = r->last;
1.2 schwarze 661:
662: r->last = r->last->parent;
1.16 schwarze 663: free(p->name);
664: free(p->end);
1.1 schwarze 665: free(p);
666: }
667:
668: /*
669: * Push a roff node onto the instruction stack. This must later be
670: * removed with roffnode_pop().
671: */
1.11 schwarze 672: static void
1.166 schwarze 673: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 674: int line, int col)
1.1 schwarze 675: {
676: struct roffnode *p;
677:
1.11 schwarze 678: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 679: p->tok = tok;
1.16 schwarze 680: if (name)
681: p->name = mandoc_strdup(name);
1.1 schwarze 682: p->parent = r->last;
683: p->line = line;
684: p->col = col;
1.71 schwarze 685: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 686:
687: r->last = p;
688: }
689:
1.138 schwarze 690: /* --- roff parser state data management ---------------------------------- */
691:
1.1 schwarze 692: static void
693: roff_free1(struct roff *r)
694: {
1.49 schwarze 695: struct tbl_node *tbl;
1.32 schwarze 696: struct eqn_node *e;
1.42 schwarze 697: int i;
1.27 schwarze 698:
1.49 schwarze 699: while (NULL != (tbl = r->first_tbl)) {
700: r->first_tbl = tbl->next;
701: tbl_free(tbl);
1.27 schwarze 702: }
703: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 704:
1.32 schwarze 705: while (NULL != (e = r->first_eqn)) {
706: r->first_eqn = e->next;
707: eqn_free(e);
708: }
709: r->first_eqn = r->last_eqn = r->eqn = NULL;
710:
1.1 schwarze 711: while (r->last)
712: roffnode_pop(r);
1.27 schwarze 713:
1.96 schwarze 714: free (r->rstack);
715: r->rstack = NULL;
716: r->rstacksz = 0;
717: r->rstackpos = -1;
718:
719: roff_freereg(r->regtab);
720: r->regtab = NULL;
721:
1.42 schwarze 722: roff_freestr(r->strtab);
1.178 schwarze 723: roff_freestr(r->rentab);
1.42 schwarze 724: roff_freestr(r->xmbtab);
1.178 schwarze 725: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 726:
727: if (r->xtab)
728: for (i = 0; i < 128; i++)
729: free(r->xtab[i].p);
730: free(r->xtab);
731: r->xtab = NULL;
1.1 schwarze 732: }
733:
734: void
735: roff_reset(struct roff *r)
736: {
737: roff_free1(r);
1.99 schwarze 738: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 739: r->control = '\0';
740: r->escape = '\\';
1.179 schwarze 741: roffce_lines = 0;
742: roffce_node = NULL;
743: roffit_lines = 0;
744: roffit_macro = NULL;
1.1 schwarze 745: }
746:
747: void
748: roff_free(struct roff *r)
749: {
750: roff_free1(r);
1.167 schwarze 751: roffhash_free(r->reqtab);
1.1 schwarze 752: free(r);
753: }
754:
755: struct roff *
1.151 schwarze 756: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 757: {
758: struct roff *r;
759:
1.11 schwarze 760: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 761: r->parse = parse;
1.167 schwarze 762: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.72 schwarze 763: r->options = options;
1.99 schwarze 764: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 765: r->rstackpos = -1;
1.175 schwarze 766: r->escape = '\\';
1.149 schwarze 767: return r;
1.137 schwarze 768: }
769:
1.138 schwarze 770: /* --- syntax tree state data management ---------------------------------- */
771:
1.137 schwarze 772: static void
773: roff_man_free1(struct roff_man *man)
774: {
775:
1.138 schwarze 776: if (man->first != NULL)
777: roff_node_delete(man, man->first);
1.137 schwarze 778: free(man->meta.msec);
779: free(man->meta.vol);
780: free(man->meta.os);
781: free(man->meta.arch);
782: free(man->meta.title);
783: free(man->meta.name);
784: free(man->meta.date);
785: }
786:
787: static void
788: roff_man_alloc1(struct roff_man *man)
789: {
790:
791: memset(&man->meta, 0, sizeof(man->meta));
792: man->first = mandoc_calloc(1, sizeof(*man->first));
793: man->first->type = ROFFT_ROOT;
794: man->last = man->first;
795: man->last_es = NULL;
796: man->flags = 0;
797: man->macroset = MACROSET_NONE;
798: man->lastsec = man->lastnamed = SEC_NONE;
799: man->next = ROFF_NEXT_CHILD;
800: }
801:
802: void
803: roff_man_reset(struct roff_man *man)
804: {
805:
806: roff_man_free1(man);
807: roff_man_alloc1(man);
808: }
809:
810: void
811: roff_man_free(struct roff_man *man)
812: {
813:
814: roff_man_free1(man);
815: free(man);
816: }
817:
818: struct roff_man *
819: roff_man_alloc(struct roff *roff, struct mparse *parse,
820: const char *defos, int quick)
821: {
822: struct roff_man *man;
823:
824: man = mandoc_calloc(1, sizeof(*man));
825: man->parse = parse;
826: man->roff = roff;
827: man->defos = defos;
828: man->quick = quick;
829: roff_man_alloc1(man);
1.168 schwarze 830: roff->man = man;
1.149 schwarze 831: return man;
1.1 schwarze 832: }
833:
1.138 schwarze 834: /* --- syntax tree handling ----------------------------------------------- */
835:
836: struct roff_node *
837: roff_node_alloc(struct roff_man *man, int line, int pos,
838: enum roff_type type, int tok)
839: {
840: struct roff_node *n;
841:
842: n = mandoc_calloc(1, sizeof(*n));
843: n->line = line;
844: n->pos = pos;
845: n->tok = tok;
846: n->type = type;
847: n->sec = man->lastsec;
848:
849: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 850: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 851: else
1.157 schwarze 852: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 853: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 854: n->flags |= NODE_LINE;
1.138 schwarze 855: man->flags &= ~MDOC_NEWLINE;
856:
1.149 schwarze 857: return n;
1.138 schwarze 858: }
859:
860: void
861: roff_node_append(struct roff_man *man, struct roff_node *n)
862: {
863:
864: switch (man->next) {
865: case ROFF_NEXT_SIBLING:
1.153 schwarze 866: if (man->last->next != NULL) {
867: n->next = man->last->next;
868: man->last->next->prev = n;
869: } else
870: man->last->parent->last = n;
1.138 schwarze 871: man->last->next = n;
872: n->prev = man->last;
873: n->parent = man->last->parent;
874: break;
875: case ROFF_NEXT_CHILD:
1.159 schwarze 876: if (man->last->child != NULL) {
877: n->next = man->last->child;
878: man->last->child->prev = n;
879: } else
880: man->last->last = n;
1.138 schwarze 881: man->last->child = n;
882: n->parent = man->last;
883: break;
884: default:
885: abort();
886: }
1.154 schwarze 887: man->last = n;
1.138 schwarze 888:
889: switch (n->type) {
890: case ROFFT_HEAD:
891: n->parent->head = n;
892: break;
893: case ROFFT_BODY:
1.154 schwarze 894: if (n->end != ENDBODY_NOT)
895: return;
1.138 schwarze 896: n->parent->body = n;
897: break;
898: case ROFFT_TAIL:
899: n->parent->tail = n;
900: break;
901: default:
1.154 schwarze 902: return;
1.138 schwarze 903: }
1.154 schwarze 904:
905: /*
906: * Copy over the normalised-data pointer of our parent. Not
907: * everybody has one, but copying a null pointer is fine.
908: */
909:
910: n->norm = n->parent->norm;
911: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 912: }
913:
1.139 schwarze 914: void
915: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
916: {
917: struct roff_node *n;
918:
919: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
920: n->string = roff_strdup(man->roff, word);
921: roff_node_append(man, n);
1.158 schwarze 922: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 923: man->next = ROFF_NEXT_SIBLING;
924: }
925:
926: void
927: roff_word_append(struct roff_man *man, const char *word)
928: {
929: struct roff_node *n;
930: char *addstr, *newstr;
931:
932: n = man->last;
933: addstr = roff_strdup(man->roff, word);
934: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
935: free(addstr);
936: free(n->string);
937: n->string = newstr;
938: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 939: }
940:
941: void
942: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
943: {
944: struct roff_node *n;
945:
946: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
947: roff_node_append(man, n);
948: man->next = ROFF_NEXT_CHILD;
949: }
950:
951: struct roff_node *
952: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
953: {
954: struct roff_node *n;
955:
956: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
957: roff_node_append(man, n);
958: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 959: return n;
1.139 schwarze 960: }
961:
1.138 schwarze 962: struct roff_node *
963: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
964: {
965: struct roff_node *n;
966:
967: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
968: roff_node_append(man, n);
969: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 970: return n;
1.138 schwarze 971: }
972:
973: struct roff_node *
974: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
975: {
976: struct roff_node *n;
977:
978: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
979: roff_node_append(man, n);
980: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 981: return n;
1.139 schwarze 982: }
983:
984: void
985: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
986: {
987: struct roff_node *n;
988:
989: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
990: n->eqn = eqn;
991: if (eqn->ln > man->last->line)
1.157 schwarze 992: n->flags |= NODE_LINE;
1.139 schwarze 993: roff_node_append(man, n);
994: man->next = ROFF_NEXT_SIBLING;
995: }
996:
997: void
998: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
999: {
1000: struct roff_node *n;
1001:
1002: if (man->macroset == MACROSET_MAN)
1.174 schwarze 1003: man_breakscope(man, ROFF_TS);
1.139 schwarze 1004: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1005: n->span = tbl;
1006: roff_node_append(man, n);
1.158 schwarze 1007: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 1008: man->next = ROFF_NEXT_SIBLING;
1.138 schwarze 1009: }
1010:
1011: void
1012: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1013: {
1014:
1015: /* Adjust siblings. */
1016:
1017: if (n->prev)
1018: n->prev->next = n->next;
1019: if (n->next)
1020: n->next->prev = n->prev;
1021:
1022: /* Adjust parent. */
1023:
1024: if (n->parent != NULL) {
1025: if (n->parent->child == n)
1026: n->parent->child = n->next;
1027: if (n->parent->last == n)
1028: n->parent->last = n->prev;
1029: }
1030:
1031: /* Adjust parse point. */
1032:
1033: if (man == NULL)
1034: return;
1035: if (man->last == n) {
1036: if (n->prev == NULL) {
1037: man->last = n->parent;
1038: man->next = ROFF_NEXT_CHILD;
1039: } else {
1040: man->last = n->prev;
1041: man->next = ROFF_NEXT_SIBLING;
1042: }
1043: }
1044: if (man->first == n)
1045: man->first = NULL;
1046: }
1047:
1048: void
1049: roff_node_free(struct roff_node *n)
1050: {
1051:
1052: if (n->args != NULL)
1053: mdoc_argv_free(n->args);
1054: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1055: free(n->norm);
1056: free(n->string);
1057: free(n);
1058: }
1059:
1060: void
1061: roff_node_delete(struct roff_man *man, struct roff_node *n)
1062: {
1063:
1064: while (n->child != NULL)
1065: roff_node_delete(man, n->child);
1066: roff_node_unlink(man, n);
1067: roff_node_free(n);
1.141 schwarze 1068: }
1069:
1070: void
1071: deroff(char **dest, const struct roff_node *n)
1072: {
1073: char *cp;
1074: size_t sz;
1075:
1076: if (n->type != ROFFT_TEXT) {
1077: for (n = n->child; n != NULL; n = n->next)
1078: deroff(dest, n);
1079: return;
1080: }
1081:
1.160 schwarze 1082: /* Skip leading whitespace. */
1.141 schwarze 1083:
1.160 schwarze 1084: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1085: if (cp[0] == '\\' && cp[1] != '\0' &&
1086: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1087: cp++;
1.160 schwarze 1088: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1089: break;
1090: }
1091:
1.161 schwarze 1092: /* Skip trailing backslash. */
1093:
1094: sz = strlen(cp);
1.162 schwarze 1095: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1096: sz--;
1097:
1.141 schwarze 1098: /* Skip trailing whitespace. */
1099:
1.161 schwarze 1100: for (; sz; sz--)
1.141 schwarze 1101: if ( ! isspace((unsigned char)cp[sz-1]))
1102: break;
1103:
1104: /* Skip empty strings. */
1105:
1106: if (sz == 0)
1107: return;
1108:
1109: if (*dest == NULL) {
1110: *dest = mandoc_strndup(cp, sz);
1111: return;
1112: }
1113:
1114: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1115: free(*dest);
1116: *dest = cp;
1.138 schwarze 1117: }
1118:
1119: /* --- main functions of the roff parser ---------------------------------- */
1120:
1.8 schwarze 1121: /*
1.79 schwarze 1122: * In the current line, expand escape sequences that tend to get
1123: * used in numerical expressions and conditional requests.
1124: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1125: */
1.45 schwarze 1126: static enum rofferr
1.110 schwarze 1127: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1128: {
1.81 schwarze 1129: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1130: const char *start; /* start of the string to process */
1.82 schwarze 1131: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1132: const char *stnam; /* start of the name, after "[(*" */
1133: const char *cp; /* end of the name, e.g. before ']' */
1134: const char *res; /* the string to be substituted */
1.110 schwarze 1135: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1136: size_t maxl; /* expected length of the escape name */
1137: size_t naml; /* actual length of the escape name */
1.109 schwarze 1138: enum mandoc_esc esc; /* type of the escape sequence */
1.185 schwarze 1139: enum mdoc_os os_e; /* kind of RCS id seen */
1.109 schwarze 1140: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1141: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1142: int npos; /* position in numeric expression */
1.91 schwarze 1143: int arg_complete; /* argument not interrupted by eol */
1.175 schwarze 1144: int done; /* no more input available */
1.187 ! schwarze 1145: int deftype; /* type of definition to paste */
1.79 schwarze 1146: char term; /* character terminating the escape */
1.8 schwarze 1147:
1.175 schwarze 1148: /* Search forward for comments. */
1149:
1150: done = 0;
1151: start = buf->buf + pos;
1152: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1153: if (stesc[0] != r->escape || stesc[1] == '\0')
1154: continue;
1155: stesc++;
1156: if (*stesc != '"' && *stesc != '#')
1157: continue;
1.185 schwarze 1158:
1159: /* Comment found, look for RCS id. */
1160:
1161: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1162: os_e = MDOC_OS_OPENBSD;
1163: cp += 8;
1164: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1165: os_e = MDOC_OS_NETBSD;
1166: cp += 7;
1167: }
1168: if (cp != NULL &&
1169: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1170: strchr(cp, '$') != NULL) {
1171: if (r->man->meta.rcsids & (1 << os_e))
1172: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1173: ln, stesc + 1 - buf->buf, stesc + 1);
1.185 schwarze 1174: r->man->meta.rcsids |= 1 << os_e;
1.186 schwarze 1175: }
1.185 schwarze 1176:
1177: /* Handle trailing whitespace. */
1178:
1.175 schwarze 1179: cp = strchr(stesc--, '\0') - 1;
1180: if (*cp == '\n') {
1181: done = 1;
1182: cp--;
1183: }
1184: if (*cp == ' ' || *cp == '\t')
1185: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1186: ln, cp - buf->buf, NULL);
1187: while (stesc > start && stesc[-1] == ' ')
1188: stesc--;
1189: *stesc = '\0';
1190: break;
1191: }
1192: if (stesc == start)
1193: return ROFF_CONT;
1194: stesc--;
1195:
1196: /* Notice the end of the input. */
1197:
1198: if (*stesc == '\n') {
1199: *stesc-- = '\0';
1200: done = 1;
1201: }
1202:
1.43 schwarze 1203: expand_count = 0;
1.175 schwarze 1204: while (stesc >= start) {
1.43 schwarze 1205:
1.78 schwarze 1206: /* Search backwards for the next backslash. */
1207:
1.175 schwarze 1208: if (*stesc != r->escape) {
1209: if (*stesc == '\\') {
1210: *stesc = '\0';
1211: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1212: buf->buf, stesc + 1) + 1;
1213: start = nbuf + pos;
1214: stesc = nbuf + (stesc - buf->buf);
1215: free(buf->buf);
1216: buf->buf = nbuf;
1217: }
1218: stesc--;
1.78 schwarze 1219: continue;
1.175 schwarze 1220: }
1.78 schwarze 1221:
1222: /* If it is escaped, skip it. */
1223:
1224: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1225: if (*cp != r->escape)
1.78 schwarze 1226: break;
1227:
1.110 schwarze 1228: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1229: while (stesc > cp)
1230: *stesc-- = '\\';
1.78 schwarze 1231: continue;
1.175 schwarze 1232: } else if (stesc[1] != '\0') {
1233: *stesc = '\\';
1234: } else {
1235: *stesc-- = '\0';
1236: if (done)
1237: continue;
1238: else
1239: return ROFF_APPEND;
1.78 schwarze 1240: }
1.23 schwarze 1241:
1.79 schwarze 1242: /* Decide whether to expand or to check only. */
1.23 schwarze 1243:
1.79 schwarze 1244: term = '\0';
1.78 schwarze 1245: cp = stesc + 1;
1.53 schwarze 1246: switch (*cp) {
1.80 schwarze 1247: case '*':
1.53 schwarze 1248: res = NULL;
1249: break;
1.80 schwarze 1250: case 'B':
1251: case 'w':
1.79 schwarze 1252: term = cp[1];
1253: /* FALLTHROUGH */
1.80 schwarze 1254: case 'n':
1.53 schwarze 1255: res = ubuf;
1256: break;
1257: default:
1.109 schwarze 1258: esc = mandoc_escape(&cp, &stnam, &inaml);
1259: if (esc == ESCAPE_ERROR ||
1260: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1261: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1262: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1263: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1264: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1265: stesc--;
1.78 schwarze 1266: continue;
1.42 schwarze 1267: }
1268:
1.78 schwarze 1269: if (EXPAND_LIMIT < ++expand_count) {
1270: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1271: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1272: return ROFF_IGN;
1.78 schwarze 1273: }
1.23 schwarze 1274:
1275: /*
1276: * The third character decides the length
1.53 schwarze 1277: * of the name of the string or register.
1.23 schwarze 1278: * Save a pointer to the name.
1279: */
1280:
1.110 schwarze 1281: if (term == '\0') {
1.79 schwarze 1282: switch (*++cp) {
1.80 schwarze 1283: case '\0':
1.79 schwarze 1284: maxl = 0;
1285: break;
1.80 schwarze 1286: case '(':
1.79 schwarze 1287: cp++;
1288: maxl = 2;
1289: break;
1.80 schwarze 1290: case '[':
1.79 schwarze 1291: cp++;
1292: term = ']';
1293: maxl = 0;
1294: break;
1295: default:
1296: maxl = 1;
1297: break;
1298: }
1299: } else {
1300: cp += 2;
1.8 schwarze 1301: maxl = 0;
1302: }
1.23 schwarze 1303: stnam = cp;
1.8 schwarze 1304:
1.23 schwarze 1305: /* Advance to the end of the name. */
1.8 schwarze 1306:
1.125 schwarze 1307: naml = 0;
1.91 schwarze 1308: arg_complete = 1;
1.125 schwarze 1309: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1310: if (*cp == '\0') {
1.92 schwarze 1311: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1312: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1313: arg_complete = 0;
1.79 schwarze 1314: break;
1.42 schwarze 1315: }
1.110 schwarze 1316: if (maxl == 0 && *cp == term) {
1.79 schwarze 1317: cp++;
1.125 schwarze 1318: break;
1319: }
1320: if (*cp++ != '\\' || stesc[1] != 'w') {
1321: naml++;
1322: continue;
1323: }
1324: switch (mandoc_escape(&cp, NULL, NULL)) {
1325: case ESCAPE_SPECIAL:
1326: case ESCAPE_UNICODE:
1327: case ESCAPE_NUMBERED:
1328: case ESCAPE_OVERSTRIKE:
1329: naml++;
1330: break;
1331: default:
1.8 schwarze 1332: break;
1.79 schwarze 1333: }
1.8 schwarze 1334: }
1335:
1.23 schwarze 1336: /*
1337: * Retrieve the replacement string; if it is
1338: * undefined, resume searching for escapes.
1339: */
1340:
1.79 schwarze 1341: switch (stesc[1]) {
1.80 schwarze 1342: case '*':
1.187 ! schwarze 1343: if (arg_complete) {
! 1344: deftype = ROFFDEF_USER | ROFFDEF_PRE;
! 1345: res = roff_getstrn(r, stnam, naml, &deftype);
! 1346: }
1.79 schwarze 1347: break;
1.80 schwarze 1348: case 'B':
1.79 schwarze 1349: npos = 0;
1.91 schwarze 1350: ubuf[0] = arg_complete &&
1.133 schwarze 1351: roff_evalnum(r, ln, stnam, &npos,
1352: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1353: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1354: ubuf[1] = '\0';
1355: break;
1.80 schwarze 1356: case 'n':
1.91 schwarze 1357: if (arg_complete)
1358: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1359: roff_getregn(r, stnam, naml));
1360: else
1361: ubuf[0] = '\0';
1.79 schwarze 1362: break;
1.80 schwarze 1363: case 'w':
1.91 schwarze 1364: /* use even incomplete args */
1.81 schwarze 1365: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1366: 24 * (int)naml);
1367: break;
1368: }
1.8 schwarze 1369:
1.110 schwarze 1370: if (res == NULL) {
1.92 schwarze 1371: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1372: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1373: "%.*s", (int)naml, stnam);
1.37 schwarze 1374: res = "";
1.118 schwarze 1375: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1376: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1377: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1378: return ROFF_IGN;
1.8 schwarze 1379: }
1380:
1.23 schwarze 1381: /* Replace the escape sequence by the string. */
1382:
1.82 schwarze 1383: *stesc = '\0';
1.110 schwarze 1384: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1385: buf->buf, res, cp) + 1;
1.8 schwarze 1386:
1.78 schwarze 1387: /* Prepare for the next replacement. */
1.8 schwarze 1388:
1.78 schwarze 1389: start = nbuf + pos;
1.110 schwarze 1390: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1391: free(buf->buf);
1392: buf->buf = nbuf;
1.42 schwarze 1393: }
1.149 schwarze 1394: return ROFF_CONT;
1.42 schwarze 1395: }
1396:
1397: /*
1.147 schwarze 1398: * Process text streams.
1.42 schwarze 1399: */
1400: static enum rofferr
1.177 schwarze 1401: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1402: {
1403: size_t sz;
1404: const char *start;
1.51 schwarze 1405: char *p;
1406: int isz;
1.42 schwarze 1407: enum mandoc_esc esc;
1408:
1.147 schwarze 1409: /* Spring the input line trap. */
1410:
1411: if (roffit_lines == 1) {
1412: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1413: free(buf->buf);
1414: buf->buf = p;
1415: buf->sz = isz + 1;
1416: *offs = 0;
1417: free(roffit_macro);
1418: roffit_lines = 0;
1.149 schwarze 1419: return ROFF_REPARSE;
1.147 schwarze 1420: } else if (roffit_lines > 1)
1421: --roffit_lines;
1422:
1.177 schwarze 1423: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1424: if (roffce_lines < 1) {
1425: r->man->last = roffce_node;
1426: r->man->next = ROFF_NEXT_SIBLING;
1427: roffce_lines = 0;
1428: roffce_node = NULL;
1429: } else
1430: roffce_lines--;
1431: }
1432:
1.147 schwarze 1433: /* Convert all breakable hyphens into ASCII_HYPH. */
1434:
1.110 schwarze 1435: start = p = buf->buf + pos;
1.42 schwarze 1436:
1.110 schwarze 1437: while (*p != '\0') {
1.42 schwarze 1438: sz = strcspn(p, "-\\");
1439: p += sz;
1440:
1.110 schwarze 1441: if (*p == '\0')
1.42 schwarze 1442: break;
1443:
1.110 schwarze 1444: if (*p == '\\') {
1.42 schwarze 1445: /* Skip over escapes. */
1446: p++;
1.62 schwarze 1447: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1448: if (esc == ESCAPE_ERROR)
1.42 schwarze 1449: break;
1.136 schwarze 1450: while (*p == '-')
1451: p++;
1.42 schwarze 1452: continue;
1453: } else if (p == start) {
1454: p++;
1455: continue;
1456: }
1457:
1.44 schwarze 1458: if (isalpha((unsigned char)p[-1]) &&
1459: isalpha((unsigned char)p[1]))
1.42 schwarze 1460: *p = ASCII_HYPH;
1461: p++;
1.8 schwarze 1462: }
1.149 schwarze 1463: return ROFF_CONT;
1.8 schwarze 1464: }
1465:
1.1 schwarze 1466: enum rofferr
1.110 schwarze 1467: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1468: {
1.166 schwarze 1469: enum roff_tok t;
1.27 schwarze 1470: enum rofferr e;
1.110 schwarze 1471: int pos; /* parse point */
1.115 schwarze 1472: int spos; /* saved parse point for messages */
1.110 schwarze 1473: int ppos; /* original offset in buf->buf */
1474: int ctl; /* macro line (boolean) */
1475:
1476: ppos = pos = *offs;
1.1 schwarze 1477:
1.102 schwarze 1478: /* Handle in-line equation delimiters. */
1479:
1.108 schwarze 1480: if (r->tbl == NULL &&
1481: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1482: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1483: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1484: if (e == ROFF_REPARSE)
1.149 schwarze 1485: return e;
1.102 schwarze 1486: assert(e == ROFF_CONT);
1487: }
1488:
1489: /* Expand some escape sequences. */
1.8 schwarze 1490:
1.110 schwarze 1491: e = roff_res(r, buf, ln, pos);
1.175 schwarze 1492: if (e == ROFF_IGN || e == ROFF_APPEND)
1.149 schwarze 1493: return e;
1.110 schwarze 1494: assert(e == ROFF_CONT);
1.8 schwarze 1495:
1.110 schwarze 1496: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1497:
1.8 schwarze 1498: /*
1.2 schwarze 1499: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1500: * text through the macro's filter.
1501: * Equations process all content themselves.
1502: * Tables process almost all content themselves, but we want
1503: * to warn about macros before passing it there.
1.2 schwarze 1504: */
1505:
1.124 schwarze 1506: if (r->last != NULL && ! ctl) {
1.2 schwarze 1507: t = r->last->tok;
1.110 schwarze 1508: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.166 schwarze 1509: if (e == ROFF_IGN)
1.149 schwarze 1510: return e;
1.166 schwarze 1511: assert(e == ROFF_CONT);
1.54 schwarze 1512: }
1.124 schwarze 1513: if (r->eqn != NULL)
1.149 schwarze 1514: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.124 schwarze 1515: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.149 schwarze 1516: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.124 schwarze 1517: if ( ! ctl)
1.177 schwarze 1518: return roff_parsetext(r, buf, pos, offs);
1.100 schwarze 1519:
1520: /* Skip empty request lines. */
1521:
1.110 schwarze 1522: if (buf->buf[pos] == '"') {
1.100 schwarze 1523: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1524: ln, pos, NULL);
1.149 schwarze 1525: return ROFF_IGN;
1.110 schwarze 1526: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1527: return ROFF_IGN;
1.2 schwarze 1528:
1529: /*
1530: * If a scope is open, go to the child handler for that macro,
1531: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1532: * Don't do so if an equation is open.
1.2 schwarze 1533: */
1534:
1535: if (r->last) {
1.1 schwarze 1536: t = r->last->tok;
1.149 schwarze 1537: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1538: }
1539:
1.115 schwarze 1540: /* No scope is open. This is a new request or macro. */
1541:
1542: spos = pos;
1543: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1544:
1545: /* Tables ignore most macros. */
1546:
1.180 schwarze 1547: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1548: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.115 schwarze 1549: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1550: ln, pos, buf->buf + spos);
1.180 schwarze 1551: if (t != TOKEN_NONE)
1.149 schwarze 1552: return ROFF_IGN;
1.129 schwarze 1553: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1554: pos++;
1.163 schwarze 1555: while (buf->buf[pos] == ' ')
1.129 schwarze 1556: pos++;
1.149 schwarze 1557: return tbl_read(r->tbl, ln, buf->buf, pos);
1.115 schwarze 1558: }
1559:
1.177 schwarze 1560: /* For now, let high level macros abort .ce mode. */
1561:
1562: if (ctl && roffce_node != NULL &&
1563: (t == TOKEN_NONE || t == ROFF_EQ || t == ROFF_TS)) {
1564: r->man->last = roffce_node;
1565: r->man->next = ROFF_NEXT_SIBLING;
1566: roffce_lines = 0;
1567: roffce_node = NULL;
1568: }
1569:
1.2 schwarze 1570: /*
1.115 schwarze 1571: * This is neither a roff request nor a user-defined macro.
1572: * Let the standard macro set parsers handle it.
1.2 schwarze 1573: */
1574:
1.166 schwarze 1575: if (t == TOKEN_NONE)
1.149 schwarze 1576: return ROFF_CONT;
1.115 schwarze 1577:
1578: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1579:
1.168 schwarze 1580: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1581: }
1582:
1.27 schwarze 1583: void
1.2 schwarze 1584: roff_endparse(struct roff *r)
1585: {
1.1 schwarze 1586:
1.27 schwarze 1587: if (r->last)
1.94 schwarze 1588: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1589: r->last->line, r->last->col,
1.167 schwarze 1590: roff_name[r->last->tok]);
1.27 schwarze 1591:
1.32 schwarze 1592: if (r->eqn) {
1.94 schwarze 1593: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1594: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1595: eqn_end(&r->eqn);
1.32 schwarze 1596: }
1597:
1.27 schwarze 1598: if (r->tbl) {
1.94 schwarze 1599: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1600: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1601: tbl_end(&r->tbl);
1.27 schwarze 1602: }
1.1 schwarze 1603: }
1604:
1605: /*
1606: * Parse a roff node's type from the input buffer. This must be in the
1607: * form of ".foo xxx" in the usual way.
1608: */
1.166 schwarze 1609: static enum roff_tok
1.87 schwarze 1610: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1611: {
1.87 schwarze 1612: char *cp;
1.16 schwarze 1613: const char *mac;
1614: size_t maclen;
1.187 ! schwarze 1615: int deftype;
1.166 schwarze 1616: enum roff_tok t;
1.1 schwarze 1617:
1.87 schwarze 1618: cp = buf + *pos;
1619:
1620: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1621: return TOKEN_NONE;
1.1 schwarze 1622:
1.87 schwarze 1623: mac = cp;
1624: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1625:
1.187 ! schwarze 1626: deftype = ROFFDEF_USER | ROFFDEF_REN;
! 1627: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
! 1628: switch (deftype) {
! 1629: case ROFFDEF_USER:
! 1630: t = ROFF_USERDEF;
! 1631: break;
! 1632: case ROFFDEF_REN:
! 1633: t = ROFF_RENAMED;
! 1634: break;
! 1635: default:
! 1636: t = roffhash_find(r->reqtab, mac, maclen);
! 1637: break;
! 1638: }
1.166 schwarze 1639: if (t != TOKEN_NONE)
1.87 schwarze 1640: *pos = cp - buf;
1.149 schwarze 1641: return t;
1.1 schwarze 1642: }
1643:
1.138 schwarze 1644: /* --- handling of request blocks ----------------------------------------- */
1645:
1.1 schwarze 1646: static enum rofferr
1.2 schwarze 1647: roff_cblock(ROFF_ARGS)
1.1 schwarze 1648: {
1649:
1.2 schwarze 1650: /*
1651: * A block-close `..' should only be invoked as a child of an
1652: * ignore macro, otherwise raise a warning and just ignore it.
1653: */
1654:
1.110 schwarze 1655: if (r->last == NULL) {
1.94 schwarze 1656: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1657: ln, ppos, "..");
1.149 schwarze 1658: return ROFF_IGN;
1.2 schwarze 1659: }
1.1 schwarze 1660:
1.2 schwarze 1661: switch (r->last->tok) {
1.80 schwarze 1662: case ROFF_am:
1.93 schwarze 1663: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1664: case ROFF_ami:
1665: case ROFF_de:
1.23 schwarze 1666: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1667: case ROFF_dei:
1668: case ROFF_ig:
1.2 schwarze 1669: break;
1670: default:
1.94 schwarze 1671: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1672: ln, ppos, "..");
1.149 schwarze 1673: return ROFF_IGN;
1.2 schwarze 1674: }
1675:
1.110 schwarze 1676: if (buf->buf[pos] != '\0')
1.90 schwarze 1677: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1678: ".. %s", buf->buf + pos);
1.2 schwarze 1679:
1680: roffnode_pop(r);
1681: roffnode_cleanscope(r);
1.149 schwarze 1682: return ROFF_IGN;
1.2 schwarze 1683:
1684: }
1.1 schwarze 1685:
1.2 schwarze 1686: static void
1687: roffnode_cleanscope(struct roff *r)
1688: {
1.1 schwarze 1689:
1.2 schwarze 1690: while (r->last) {
1.46 schwarze 1691: if (--r->last->endspan != 0)
1.2 schwarze 1692: break;
1693: roffnode_pop(r);
1694: }
1695: }
1.1 schwarze 1696:
1.68 schwarze 1697: static void
1698: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1699: {
1.1 schwarze 1700:
1.2 schwarze 1701: if (NULL == r->last) {
1.94 schwarze 1702: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1703: ln, ppos, "\\}");
1.68 schwarze 1704: return;
1.2 schwarze 1705: }
1.1 schwarze 1706:
1.2 schwarze 1707: switch (r->last->tok) {
1.80 schwarze 1708: case ROFF_el:
1709: case ROFF_ie:
1710: case ROFF_if:
1.2 schwarze 1711: break;
1712: default:
1.94 schwarze 1713: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1714: ln, ppos, "\\}");
1.68 schwarze 1715: return;
1.2 schwarze 1716: }
1.1 schwarze 1717:
1.2 schwarze 1718: if (r->last->endspan > -1) {
1.94 schwarze 1719: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1720: ln, ppos, "\\}");
1.68 schwarze 1721: return;
1.2 schwarze 1722: }
1723:
1724: roffnode_pop(r);
1725: roffnode_cleanscope(r);
1.68 schwarze 1726: return;
1.1 schwarze 1727: }
1728:
1729: static enum rofferr
1.2 schwarze 1730: roff_block(ROFF_ARGS)
1.1 schwarze 1731: {
1.187 ! schwarze 1732: const char *name, *value;
! 1733: char *call, *cp, *iname, *rname;
! 1734: size_t csz, namesz, rsz;
! 1735: int deftype;
1.16 schwarze 1736:
1.93 schwarze 1737: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1738:
1.110 schwarze 1739: if (tok == ROFF_de1)
1.93 schwarze 1740: tok = ROFF_de;
1.123 schwarze 1741: else if (tok == ROFF_dei1)
1742: tok = ROFF_dei;
1.110 schwarze 1743: else if (tok == ROFF_am1)
1.93 schwarze 1744: tok = ROFF_am;
1.123 schwarze 1745: else if (tok == ROFF_ami1)
1746: tok = ROFF_ami;
1.93 schwarze 1747:
1748: /* Parse the macro name argument. */
1749:
1.110 schwarze 1750: cp = buf->buf + pos;
1751: if (tok == ROFF_ig) {
1.93 schwarze 1752: iname = NULL;
1753: namesz = 0;
1754: } else {
1755: iname = cp;
1756: namesz = roff_getname(r, &cp, ln, ppos);
1757: iname[namesz] = '\0';
1758: }
1.22 schwarze 1759:
1.93 schwarze 1760: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1761:
1.110 schwarze 1762: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 ! schwarze 1763: deftype = ROFFDEF_USER;
! 1764: name = roff_getstrn(r, iname, namesz, &deftype);
! 1765: if (name == NULL) {
1.93 schwarze 1766: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1767: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1768: "%.*s", (int)namesz, iname);
1769: namesz = 0;
1770: } else
1771: namesz = strlen(name);
1772: } else
1773: name = iname;
1.22 schwarze 1774:
1.110 schwarze 1775: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1776: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1777: ln, ppos, roff_name[tok]);
1.149 schwarze 1778: return ROFF_IGN;
1.93 schwarze 1779: }
1.2 schwarze 1780:
1.16 schwarze 1781: roffnode_push(r, tok, name, ln, ppos);
1782:
1783: /*
1784: * At the beginning of a `de' macro, clear the existing string
1785: * with the same name, if there is one. New content will be
1.66 schwarze 1786: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1787: */
1.22 schwarze 1788:
1.183 schwarze 1789: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 1790: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 1791: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 ! schwarze 1792: } else if (tok == ROFF_am || tok == ROFF_ami) {
! 1793: deftype = ROFFDEF_ANY;
! 1794: value = roff_getstrn(r, iname, namesz, &deftype);
! 1795: switch (deftype) { /* Before appending, ... */
! 1796: case ROFFDEF_PRE: /* copy predefined to user-defined. */
! 1797: roff_setstrn(&r->strtab, name, namesz,
! 1798: value, strlen(value), 0);
! 1799: break;
! 1800: case ROFFDEF_REN: /* call original standard macro. */
! 1801: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
! 1802: (int)strlen(value), value);
! 1803: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
! 1804: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
! 1805: free(call);
! 1806: break;
! 1807: case ROFFDEF_STD: /* rename and call standard macro. */
! 1808: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
! 1809: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
! 1810: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
! 1811: (int)rsz, rname);
! 1812: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
! 1813: free(call);
! 1814: free(rname);
! 1815: break;
! 1816: default:
! 1817: break;
! 1818: }
1.183 schwarze 1819: }
1.2 schwarze 1820:
1.110 schwarze 1821: if (*cp == '\0')
1.149 schwarze 1822: return ROFF_IGN;
1.1 schwarze 1823:
1.93 schwarze 1824: /* Get the custom end marker. */
1.22 schwarze 1825:
1.93 schwarze 1826: iname = cp;
1.86 schwarze 1827: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1828:
1829: /* Resolve the end marker if it is indirect. */
1830:
1.110 schwarze 1831: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 ! schwarze 1832: deftype = ROFFDEF_USER;
! 1833: name = roff_getstrn(r, iname, namesz, &deftype);
! 1834: if (name == NULL) {
1.93 schwarze 1835: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1836: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1837: "%.*s", (int)namesz, iname);
1838: namesz = 0;
1839: } else
1840: namesz = strlen(name);
1841: } else
1842: name = iname;
1843:
1.86 schwarze 1844: if (namesz)
1845: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1846:
1.110 schwarze 1847: if (*cp != '\0')
1.90 schwarze 1848: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 1849: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 1850:
1.149 schwarze 1851: return ROFF_IGN;
1.1 schwarze 1852: }
1853:
1854: static enum rofferr
1.2 schwarze 1855: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1856: {
1.166 schwarze 1857: enum roff_tok t;
1.2 schwarze 1858: int i, j;
1859:
1860: /*
1861: * First check whether a custom macro exists at this level. If
1862: * it does, then check against it. This is some of groff's
1863: * stranger behaviours. If we encountered a custom end-scope
1864: * tag and that tag also happens to be a "real" macro, then we
1865: * need to try interpreting it again as a real macro. If it's
1866: * not, then return ignore. Else continue.
1867: */
1868:
1869: if (r->last->end) {
1.35 schwarze 1870: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1871: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1872: break;
1.1 schwarze 1873:
1.110 schwarze 1874: if (r->last->end[j] == '\0' &&
1875: (buf->buf[i] == '\0' ||
1876: buf->buf[i] == ' ' ||
1877: buf->buf[i] == '\t')) {
1.2 schwarze 1878: roffnode_pop(r);
1879: roffnode_cleanscope(r);
1.1 schwarze 1880:
1.110 schwarze 1881: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1882: i++;
1883:
1884: pos = i;
1.110 schwarze 1885: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 1886: TOKEN_NONE)
1.149 schwarze 1887: return ROFF_RERUN;
1888: return ROFF_IGN;
1.2 schwarze 1889: }
1.1 schwarze 1890: }
1891:
1.2 schwarze 1892: /*
1893: * If we have no custom end-query or lookup failed, then try
1894: * pulling it out of the hashtable.
1895: */
1.1 schwarze 1896:
1.110 schwarze 1897: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1898:
1.110 schwarze 1899: if (t != ROFF_cblock) {
1900: if (tok != ROFF_ig)
1901: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1902: return ROFF_IGN;
1.16 schwarze 1903: }
1.1 schwarze 1904:
1.149 schwarze 1905: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1906: }
1907:
1908: static enum rofferr
1909: roff_block_text(ROFF_ARGS)
1910: {
1911:
1.110 schwarze 1912: if (tok != ROFF_ig)
1913: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1914:
1.149 schwarze 1915: return ROFF_IGN;
1.2 schwarze 1916: }
1917:
1918: static enum rofferr
1919: roff_cond_sub(ROFF_ARGS)
1920: {
1.166 schwarze 1921: enum roff_tok t;
1.37 schwarze 1922: char *ep;
1.71 schwarze 1923: int rr;
1.2 schwarze 1924:
1925: rr = r->last->rule;
1.37 schwarze 1926: roffnode_cleanscope(r);
1.110 schwarze 1927: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1928:
1.37 schwarze 1929: /*
1.50 schwarze 1930: * Fully handle known macros when they are structurally
1931: * required or when the conditional evaluated to true.
1.5 schwarze 1932: */
1933:
1.166 schwarze 1934: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.149 schwarze 1935: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.39 schwarze 1936:
1.69 schwarze 1937: /*
1938: * If `\}' occurs on a macro line without a preceding macro,
1939: * drop the line completely.
1940: */
1941:
1.110 schwarze 1942: ep = buf->buf + pos;
1943: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1944: rr = 0;
1.69 schwarze 1945:
1.50 schwarze 1946: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1947:
1.110 schwarze 1948: while ((ep = strchr(ep, '\\')) != NULL) {
1949: if (*(++ep) == '}') {
1.70 schwarze 1950: *ep = '&';
1.110 schwarze 1951: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1952: }
1.119 schwarze 1953: if (*ep != '\0')
1954: ++ep;
1.50 schwarze 1955: }
1.149 schwarze 1956: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1957: }
1958:
1959: static enum rofferr
1960: roff_cond_text(ROFF_ARGS)
1961: {
1.37 schwarze 1962: char *ep;
1.71 schwarze 1963: int rr;
1.2 schwarze 1964:
1965: rr = r->last->rule;
1.37 schwarze 1966: roffnode_cleanscope(r);
1.1 schwarze 1967:
1.110 schwarze 1968: ep = buf->buf + pos;
1969: while ((ep = strchr(ep, '\\')) != NULL) {
1970: if (*(++ep) == '}') {
1.70 schwarze 1971: *ep = '&';
1.110 schwarze 1972: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1973: }
1.119 schwarze 1974: if (*ep != '\0')
1975: ++ep;
1.2 schwarze 1976: }
1.149 schwarze 1977: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1978: }
1979:
1.138 schwarze 1980: /* --- handling of numeric and conditional expressions -------------------- */
1981:
1.77 schwarze 1982: /*
1983: * Parse a single signed integer number. Stop at the first non-digit.
1984: * If there is at least one digit, return success and advance the
1985: * parse point, else return failure and let the parse point unchanged.
1986: * Ignore overflows, treat them just like the C language.
1987: */
1.56 schwarze 1988: static int
1.133 schwarze 1989: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 1990: {
1.133 schwarze 1991: int myres, scaled, n, p;
1.79 schwarze 1992:
1993: if (NULL == res)
1994: res = &myres;
1.56 schwarze 1995:
1996: p = *pos;
1997: n = v[p] == '-';
1.133 schwarze 1998: if (n || v[p] == '+')
1.56 schwarze 1999: p++;
2000:
1.133 schwarze 2001: if (flags & ROFFNUM_WHITE)
2002: while (isspace((unsigned char)v[p]))
2003: p++;
2004:
1.56 schwarze 2005: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2006: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2007: if (p == *pos + n)
2008: return 0;
2009:
2010: if (n)
2011: *res = -*res;
2012:
1.126 schwarze 2013: /* Each number may be followed by one optional scaling unit. */
2014:
2015: switch (v[p]) {
2016: case 'f':
1.133 schwarze 2017: scaled = *res * 65536;
1.126 schwarze 2018: break;
2019: case 'i':
1.133 schwarze 2020: scaled = *res * 240;
1.126 schwarze 2021: break;
2022: case 'c':
1.133 schwarze 2023: scaled = *res * 240 / 2.54;
1.126 schwarze 2024: break;
2025: case 'v':
2026: case 'P':
1.133 schwarze 2027: scaled = *res * 40;
1.126 schwarze 2028: break;
2029: case 'm':
2030: case 'n':
1.133 schwarze 2031: scaled = *res * 24;
1.126 schwarze 2032: break;
2033: case 'p':
1.133 schwarze 2034: scaled = *res * 10 / 3;
1.126 schwarze 2035: break;
2036: case 'u':
1.133 schwarze 2037: scaled = *res;
1.126 schwarze 2038: break;
2039: case 'M':
1.133 schwarze 2040: scaled = *res * 6 / 25;
1.126 schwarze 2041: break;
2042: default:
1.133 schwarze 2043: scaled = *res;
1.126 schwarze 2044: p--;
2045: break;
2046: }
1.133 schwarze 2047: if (flags & ROFFNUM_SCALE)
2048: *res = scaled;
1.126 schwarze 2049:
2050: *pos = p + 1;
1.149 schwarze 2051: return 1;
1.56 schwarze 2052: }
2053:
1.71 schwarze 2054: /*
2055: * Evaluate a string comparison condition.
2056: * The first character is the delimiter.
2057: * Succeed if the string up to its second occurrence
2058: * matches the string up to its third occurence.
2059: * Advance the cursor after the third occurrence
2060: * or lacking that, to the end of the line.
2061: */
2062: static int
2063: roff_evalstrcond(const char *v, int *pos)
2064: {
2065: const char *s1, *s2, *s3;
2066: int match;
2067:
2068: match = 0;
2069: s1 = v + *pos; /* initial delimiter */
2070: s2 = s1 + 1; /* for scanning the first string */
2071: s3 = strchr(s2, *s1); /* for scanning the second string */
2072:
2073: if (NULL == s3) /* found no middle delimiter */
2074: goto out;
2075:
2076: while ('\0' != *++s3) {
2077: if (*s2 != *s3) { /* mismatch */
2078: s3 = strchr(s3, *s1);
2079: break;
2080: }
2081: if (*s3 == *s1) { /* found the final delimiter */
2082: match = 1;
2083: break;
2084: }
2085: s2++;
2086: }
2087:
2088: out:
2089: if (NULL == s3)
2090: s3 = strchr(s2, '\0');
1.114 schwarze 2091: else if (*s3 != '\0')
1.71 schwarze 2092: s3++;
2093: *pos = s3 - v;
1.149 schwarze 2094: return match;
1.71 schwarze 2095: }
2096:
1.77 schwarze 2097: /*
2098: * Evaluate an optionally negated single character, numerical,
2099: * or string condition.
2100: */
1.71 schwarze 2101: static int
1.143 schwarze 2102: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2103: {
1.143 schwarze 2104: char *cp, *name;
2105: size_t sz;
1.187 ! schwarze 2106: int deftype, number, savepos, istrue, wanttrue;
1.5 schwarze 2107:
1.71 schwarze 2108: if ('!' == v[*pos]) {
2109: wanttrue = 0;
2110: (*pos)++;
2111: } else
2112: wanttrue = 1;
2113:
1.5 schwarze 2114: switch (v[*pos]) {
1.112 schwarze 2115: case '\0':
1.149 schwarze 2116: return 0;
1.80 schwarze 2117: case 'n':
2118: case 'o':
1.5 schwarze 2119: (*pos)++;
1.149 schwarze 2120: return wanttrue;
1.80 schwarze 2121: case 'c':
2122: case 'e':
2123: case 't':
1.111 schwarze 2124: case 'v':
1.5 schwarze 2125: (*pos)++;
1.149 schwarze 2126: return !wanttrue;
1.182 schwarze 2127: case 'd':
1.143 schwarze 2128: case 'r':
1.182 schwarze 2129: cp = v + *pos + 1;
2130: while (*cp == ' ')
2131: cp++;
2132: name = cp;
2133: sz = roff_getname(r, &cp, ln, cp - v);
1.187 ! schwarze 2134: if (sz == 0)
! 2135: istrue = 0;
! 2136: else if (v[*pos] == 'r')
! 2137: istrue = roff_hasregn(r, name, sz);
! 2138: else {
! 2139: deftype = ROFFDEF_ANY;
! 2140: roff_getstrn(r, name, sz, &deftype);
! 2141: istrue = !!deftype;
! 2142: }
1.143 schwarze 2143: *pos = cp - v;
1.182 schwarze 2144: return istrue == wanttrue;
1.5 schwarze 2145: default:
2146: break;
2147: }
2148:
1.113 schwarze 2149: savepos = *pos;
1.133 schwarze 2150: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2151: return (number > 0) == wanttrue;
1.113 schwarze 2152: else if (*pos == savepos)
1.149 schwarze 2153: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2154: else
1.149 schwarze 2155: return 0;
1.5 schwarze 2156: }
2157:
1.2 schwarze 2158: static enum rofferr
1.21 schwarze 2159: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2160: {
1.30 schwarze 2161:
1.149 schwarze 2162: return ROFF_IGN;
1.21 schwarze 2163: }
2164:
2165: static enum rofferr
1.123 schwarze 2166: roff_insec(ROFF_ARGS)
2167: {
2168:
2169: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2170: ln, ppos, roff_name[tok]);
1.149 schwarze 2171: return ROFF_IGN;
1.123 schwarze 2172: }
2173:
2174: static enum rofferr
2175: roff_unsupp(ROFF_ARGS)
2176: {
2177:
2178: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2179: ln, ppos, roff_name[tok]);
1.149 schwarze 2180: return ROFF_IGN;
1.123 schwarze 2181: }
2182:
2183: static enum rofferr
1.2 schwarze 2184: roff_cond(ROFF_ARGS)
2185: {
1.46 schwarze 2186:
2187: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2188:
1.80 schwarze 2189: /*
1.35 schwarze 2190: * An `.el' has no conditional body: it will consume the value
2191: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2192: * defaults to DENY.
1.35 schwarze 2193: *
2194: * If we're not an `el', however, then evaluate the conditional.
2195: */
1.1 schwarze 2196:
1.110 schwarze 2197: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2198: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2199: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2200:
1.35 schwarze 2201: /*
2202: * An if-else will put the NEGATION of the current evaluated
2203: * conditional into the stack of rules.
2204: */
2205:
1.110 schwarze 2206: if (tok == ROFF_ie) {
1.96 schwarze 2207: if (r->rstackpos + 1 == r->rstacksz) {
2208: r->rstacksz += 16;
2209: r->rstack = mandoc_reallocarray(r->rstack,
2210: r->rstacksz, sizeof(int));
1.35 schwarze 2211: }
1.71 schwarze 2212: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2213: }
1.5 schwarze 2214:
2215: /* If the parent has false as its rule, then so do we. */
2216:
1.71 schwarze 2217: if (r->last->parent && !r->last->parent->rule)
2218: r->last->rule = 0;
1.5 schwarze 2219:
2220: /*
1.46 schwarze 2221: * Determine scope.
2222: * If there is nothing on the line after the conditional,
2223: * not even whitespace, use next-line scope.
1.5 schwarze 2224: */
1.2 schwarze 2225:
1.110 schwarze 2226: if (buf->buf[pos] == '\0') {
1.46 schwarze 2227: r->last->endspan = 2;
2228: goto out;
2229: }
2230:
1.110 schwarze 2231: while (buf->buf[pos] == ' ')
1.46 schwarze 2232: pos++;
2233:
2234: /* An opening brace requests multiline scope. */
1.2 schwarze 2235:
1.110 schwarze 2236: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2237: r->last->endspan = -1;
2238: pos += 2;
1.144 schwarze 2239: while (buf->buf[pos] == ' ')
2240: pos++;
1.46 schwarze 2241: goto out;
1.80 schwarze 2242: }
1.2 schwarze 2243:
2244: /*
1.46 schwarze 2245: * Anything else following the conditional causes
2246: * single-line scope. Warn if the scope contains
2247: * nothing but trailing whitespace.
1.2 schwarze 2248: */
2249:
1.110 schwarze 2250: if (buf->buf[pos] == '\0')
1.89 schwarze 2251: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2252: ln, ppos, roff_name[tok]);
1.2 schwarze 2253:
1.46 schwarze 2254: r->last->endspan = 1;
1.1 schwarze 2255:
1.46 schwarze 2256: out:
1.2 schwarze 2257: *offs = pos;
1.149 schwarze 2258: return ROFF_RERUN;
1.1 schwarze 2259: }
2260:
1.2 schwarze 2261: static enum rofferr
1.7 schwarze 2262: roff_ds(ROFF_ARGS)
2263: {
1.85 schwarze 2264: char *string;
2265: const char *name;
2266: size_t namesz;
1.10 schwarze 2267:
1.123 schwarze 2268: /* Ignore groff compatibility mode for now. */
2269:
2270: if (tok == ROFF_ds1)
2271: tok = ROFF_ds;
2272: else if (tok == ROFF_as1)
2273: tok = ROFF_as;
2274:
1.10 schwarze 2275: /*
1.85 schwarze 2276: * The first word is the name of the string.
2277: * If it is empty or terminated by an escape sequence,
2278: * abort the `ds' request without defining anything.
1.10 schwarze 2279: */
1.7 schwarze 2280:
1.110 schwarze 2281: name = string = buf->buf + pos;
2282: if (*name == '\0')
1.149 schwarze 2283: return ROFF_IGN;
1.7 schwarze 2284:
1.85 schwarze 2285: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2286: if (name[namesz] == '\\')
1.149 schwarze 2287: return ROFF_IGN;
1.85 schwarze 2288:
2289: /* Read past the initial double-quote, if any. */
1.110 schwarze 2290: if (*string == '"')
1.7 schwarze 2291: string++;
2292:
1.10 schwarze 2293: /* The rest is the value. */
1.85 schwarze 2294: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2295: ROFF_as == tok);
1.183 schwarze 2296: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2297: return ROFF_IGN;
1.7 schwarze 2298: }
2299:
1.77 schwarze 2300: /*
2301: * Parse a single operator, one or two characters long.
2302: * If the operator is recognized, return success and advance the
2303: * parse point, else return failure and let the parse point unchanged.
2304: */
2305: static int
2306: roff_getop(const char *v, int *pos, char *res)
2307: {
2308:
2309: *res = v[*pos];
2310:
2311: switch (*res) {
1.80 schwarze 2312: case '+':
2313: case '-':
2314: case '*':
2315: case '/':
2316: case '%':
2317: case '&':
2318: case ':':
1.77 schwarze 2319: break;
2320: case '<':
2321: switch (v[*pos + 1]) {
1.80 schwarze 2322: case '=':
1.77 schwarze 2323: *res = 'l';
2324: (*pos)++;
2325: break;
1.80 schwarze 2326: case '>':
1.77 schwarze 2327: *res = '!';
2328: (*pos)++;
2329: break;
1.80 schwarze 2330: case '?':
1.77 schwarze 2331: *res = 'i';
2332: (*pos)++;
2333: break;
2334: default:
2335: break;
2336: }
2337: break;
2338: case '>':
2339: switch (v[*pos + 1]) {
1.80 schwarze 2340: case '=':
1.77 schwarze 2341: *res = 'g';
2342: (*pos)++;
2343: break;
1.80 schwarze 2344: case '?':
1.77 schwarze 2345: *res = 'a';
2346: (*pos)++;
2347: break;
2348: default:
2349: break;
2350: }
2351: break;
2352: case '=':
2353: if ('=' == v[*pos + 1])
2354: (*pos)++;
2355: break;
2356: default:
1.149 schwarze 2357: return 0;
1.77 schwarze 2358: }
2359: (*pos)++;
2360:
1.149 schwarze 2361: return *res;
1.77 schwarze 2362: }
2363:
2364: /*
2365: * Evaluate either a parenthesized numeric expression
2366: * or a single signed integer number.
2367: */
2368: static int
1.106 schwarze 2369: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2370: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2371: {
2372:
2373: if ('(' != v[*pos])
1.149 schwarze 2374: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2375:
2376: (*pos)++;
1.133 schwarze 2377: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2378: return 0;
1.77 schwarze 2379:
1.79 schwarze 2380: /*
2381: * Omission of the closing parenthesis
2382: * is an error in validation mode,
2383: * but ignored in evaluation mode.
2384: */
2385:
1.77 schwarze 2386: if (')' == v[*pos])
2387: (*pos)++;
1.79 schwarze 2388: else if (NULL == res)
1.149 schwarze 2389: return 0;
1.77 schwarze 2390:
1.149 schwarze 2391: return 1;
1.77 schwarze 2392: }
2393:
2394: /*
2395: * Evaluate a complete numeric expression.
2396: * Proceed left to right, there is no concept of precedence.
2397: */
2398: static int
1.106 schwarze 2399: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2400: int *pos, int *res, int flags)
1.77 schwarze 2401: {
2402: int mypos, operand2;
2403: char operator;
2404:
2405: if (NULL == pos) {
2406: mypos = 0;
2407: pos = &mypos;
2408: }
2409:
1.133 schwarze 2410: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2411: while (isspace((unsigned char)v[*pos]))
2412: (*pos)++;
2413:
1.133 schwarze 2414: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2415: return 0;
1.77 schwarze 2416:
2417: while (1) {
1.133 schwarze 2418: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2419: while (isspace((unsigned char)v[*pos]))
2420: (*pos)++;
2421:
2422: if ( ! roff_getop(v, pos, &operator))
2423: break;
2424:
1.133 schwarze 2425: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2426: while (isspace((unsigned char)v[*pos]))
2427: (*pos)++;
2428:
1.133 schwarze 2429: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2430: return 0;
1.77 schwarze 2431:
1.133 schwarze 2432: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2433: while (isspace((unsigned char)v[*pos]))
2434: (*pos)++;
1.79 schwarze 2435:
2436: if (NULL == res)
2437: continue;
1.77 schwarze 2438:
2439: switch (operator) {
1.80 schwarze 2440: case '+':
1.77 schwarze 2441: *res += operand2;
2442: break;
1.80 schwarze 2443: case '-':
1.77 schwarze 2444: *res -= operand2;
2445: break;
1.80 schwarze 2446: case '*':
1.77 schwarze 2447: *res *= operand2;
2448: break;
1.80 schwarze 2449: case '/':
1.116 schwarze 2450: if (operand2 == 0) {
1.106 schwarze 2451: mandoc_msg(MANDOCERR_DIVZERO,
2452: r->parse, ln, *pos, v);
2453: *res = 0;
2454: break;
2455: }
1.77 schwarze 2456: *res /= operand2;
2457: break;
1.80 schwarze 2458: case '%':
1.116 schwarze 2459: if (operand2 == 0) {
2460: mandoc_msg(MANDOCERR_DIVZERO,
2461: r->parse, ln, *pos, v);
2462: *res = 0;
2463: break;
2464: }
1.77 schwarze 2465: *res %= operand2;
2466: break;
1.80 schwarze 2467: case '<':
1.77 schwarze 2468: *res = *res < operand2;
2469: break;
1.80 schwarze 2470: case '>':
1.77 schwarze 2471: *res = *res > operand2;
2472: break;
1.80 schwarze 2473: case 'l':
1.77 schwarze 2474: *res = *res <= operand2;
2475: break;
1.80 schwarze 2476: case 'g':
1.77 schwarze 2477: *res = *res >= operand2;
2478: break;
1.80 schwarze 2479: case '=':
1.77 schwarze 2480: *res = *res == operand2;
2481: break;
1.80 schwarze 2482: case '!':
1.77 schwarze 2483: *res = *res != operand2;
2484: break;
1.80 schwarze 2485: case '&':
1.77 schwarze 2486: *res = *res && operand2;
2487: break;
1.80 schwarze 2488: case ':':
1.77 schwarze 2489: *res = *res || operand2;
2490: break;
1.80 schwarze 2491: case 'i':
1.77 schwarze 2492: if (operand2 < *res)
2493: *res = operand2;
2494: break;
1.80 schwarze 2495: case 'a':
1.77 schwarze 2496: if (operand2 > *res)
2497: *res = operand2;
2498: break;
2499: default:
2500: abort();
2501: }
2502: }
1.149 schwarze 2503: return 1;
1.77 schwarze 2504: }
2505:
1.138 schwarze 2506: /* --- register management ------------------------------------------------ */
2507:
1.52 schwarze 2508: void
1.60 schwarze 2509: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2510: {
1.52 schwarze 2511: struct roffreg *reg;
2512:
2513: /* Search for an existing register with the same name. */
2514: reg = r->regtab;
2515:
2516: while (reg && strcmp(name, reg->key.p))
2517: reg = reg->next;
1.41 schwarze 2518:
1.52 schwarze 2519: if (NULL == reg) {
2520: /* Create a new register. */
2521: reg = mandoc_malloc(sizeof(struct roffreg));
2522: reg->key.p = mandoc_strdup(name);
2523: reg->key.sz = strlen(name);
1.60 schwarze 2524: reg->val = 0;
1.52 schwarze 2525: reg->next = r->regtab;
2526: r->regtab = reg;
2527: }
2528:
1.60 schwarze 2529: if ('+' == sign)
2530: reg->val += val;
2531: else if ('-' == sign)
2532: reg->val -= val;
2533: else
2534: reg->val = val;
1.41 schwarze 2535: }
2536:
1.65 schwarze 2537: /*
2538: * Handle some predefined read-only number registers.
2539: * For now, return -1 if the requested register is not predefined;
2540: * in case a predefined read-only register having the value -1
2541: * were to turn up, another special value would have to be chosen.
2542: */
2543: static int
1.145 schwarze 2544: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2545: {
2546:
2547: switch (*name) {
1.145 schwarze 2548: case '$': /* Number of arguments of the last macro evaluated. */
1.149 schwarze 2549: return r->argc;
1.80 schwarze 2550: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2551: return 0;
1.80 schwarze 2552: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2553: return 1;
1.80 schwarze 2554: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2555: return 24;
1.80 schwarze 2556: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2557: return 0;
1.80 schwarze 2558: case 'T': /* Some output device is always defined. */
1.149 schwarze 2559: return 1;
1.80 schwarze 2560: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2561: return 40;
1.65 schwarze 2562: default:
1.149 schwarze 2563: return -1;
1.65 schwarze 2564: }
2565: }
2566:
1.53 schwarze 2567: int
1.52 schwarze 2568: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2569: {
1.52 schwarze 2570: struct roffreg *reg;
1.65 schwarze 2571: int val;
2572:
2573: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.145 schwarze 2574: val = roff_getregro(r, name + 1);
1.65 schwarze 2575: if (-1 != val)
1.149 schwarze 2576: return val;
1.65 schwarze 2577: }
1.52 schwarze 2578:
2579: for (reg = r->regtab; reg; reg = reg->next)
2580: if (0 == strcmp(name, reg->key.p))
1.149 schwarze 2581: return reg->val;
1.53 schwarze 2582:
1.149 schwarze 2583: return 0;
1.53 schwarze 2584: }
2585:
2586: static int
2587: roff_getregn(const struct roff *r, const char *name, size_t len)
2588: {
2589: struct roffreg *reg;
1.65 schwarze 2590: int val;
2591:
2592: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2593: val = roff_getregro(r, name + 1);
1.65 schwarze 2594: if (-1 != val)
1.149 schwarze 2595: return val;
1.65 schwarze 2596: }
1.53 schwarze 2597:
2598: for (reg = r->regtab; reg; reg = reg->next)
2599: if (len == reg->key.sz &&
2600: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2601: return reg->val;
1.143 schwarze 2602:
1.149 schwarze 2603: return 0;
1.143 schwarze 2604: }
2605:
2606: static int
2607: roff_hasregn(const struct roff *r, const char *name, size_t len)
2608: {
2609: struct roffreg *reg;
2610: int val;
2611:
2612: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2613: val = roff_getregro(r, name + 1);
1.143 schwarze 2614: if (-1 != val)
1.149 schwarze 2615: return 1;
1.143 schwarze 2616: }
2617:
2618: for (reg = r->regtab; reg; reg = reg->next)
2619: if (len == reg->key.sz &&
2620: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2621: return 1;
1.41 schwarze 2622:
1.149 schwarze 2623: return 0;
1.41 schwarze 2624: }
2625:
1.52 schwarze 2626: static void
2627: roff_freereg(struct roffreg *reg)
1.41 schwarze 2628: {
1.52 schwarze 2629: struct roffreg *old_reg;
1.41 schwarze 2630:
1.52 schwarze 2631: while (NULL != reg) {
2632: free(reg->key.p);
2633: old_reg = reg;
2634: reg = reg->next;
2635: free(old_reg);
2636: }
1.41 schwarze 2637: }
1.7 schwarze 2638:
2639: static enum rofferr
1.6 schwarze 2640: roff_nr(ROFF_ARGS)
1.1 schwarze 2641: {
1.85 schwarze 2642: char *key, *val;
2643: size_t keysz;
1.37 schwarze 2644: int iv;
1.60 schwarze 2645: char sign;
1.6 schwarze 2646:
1.110 schwarze 2647: key = val = buf->buf + pos;
2648: if (*key == '\0')
1.149 schwarze 2649: return ROFF_IGN;
1.85 schwarze 2650:
2651: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2652: if (key[keysz] == '\\')
1.149 schwarze 2653: return ROFF_IGN;
1.85 schwarze 2654: key[keysz] = '\0';
1.6 schwarze 2655:
1.60 schwarze 2656: sign = *val;
1.110 schwarze 2657: if (sign == '+' || sign == '-')
1.60 schwarze 2658: val++;
2659:
1.133 schwarze 2660: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2661: roff_setreg(r, key, iv, sign);
1.1 schwarze 2662:
1.149 schwarze 2663: return ROFF_IGN;
1.76 schwarze 2664: }
2665:
2666: static enum rofferr
2667: roff_rr(ROFF_ARGS)
2668: {
2669: struct roffreg *reg, **prev;
1.85 schwarze 2670: char *name, *cp;
2671: size_t namesz;
1.76 schwarze 2672:
1.110 schwarze 2673: name = cp = buf->buf + pos;
2674: if (*name == '\0')
1.149 schwarze 2675: return ROFF_IGN;
1.85 schwarze 2676: namesz = roff_getname(r, &cp, ln, pos);
2677: name[namesz] = '\0';
1.76 schwarze 2678:
2679: prev = &r->regtab;
2680: while (1) {
2681: reg = *prev;
1.110 schwarze 2682: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2683: break;
2684: prev = ®->next;
2685: }
1.110 schwarze 2686: if (reg != NULL) {
1.76 schwarze 2687: *prev = reg->next;
2688: free(reg->key.p);
2689: free(reg);
2690: }
1.149 schwarze 2691: return ROFF_IGN;
1.29 schwarze 2692: }
2693:
1.138 schwarze 2694: /* --- handler functions for roff requests -------------------------------- */
2695:
1.29 schwarze 2696: static enum rofferr
2697: roff_rm(ROFF_ARGS)
2698: {
2699: const char *name;
2700: char *cp;
1.85 schwarze 2701: size_t namesz;
1.29 schwarze 2702:
1.110 schwarze 2703: cp = buf->buf + pos;
2704: while (*cp != '\0') {
1.85 schwarze 2705: name = cp;
1.110 schwarze 2706: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2707: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 2708: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 2709: if (name[namesz] == '\\')
1.85 schwarze 2710: break;
1.29 schwarze 2711: }
1.149 schwarze 2712: return ROFF_IGN;
1.51 schwarze 2713: }
2714:
2715: static enum rofferr
2716: roff_it(ROFF_ARGS)
2717: {
2718: int iv;
2719:
2720: /* Parse the number of lines. */
1.133 schwarze 2721:
2722: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2723: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2724: ln, ppos, buf->buf + 1);
1.149 schwarze 2725: return ROFF_IGN;
1.51 schwarze 2726: }
2727:
1.134 schwarze 2728: while (isspace((unsigned char)buf->buf[pos]))
2729: pos++;
2730:
2731: /*
2732: * Arm the input line trap.
2733: * Special-casing "an-trap" is an ugly workaround to cope
2734: * with DocBook stupidly fiddling with man(7) internals.
2735: */
1.133 schwarze 2736:
1.51 schwarze 2737: roffit_lines = iv;
1.134 schwarze 2738: roffit_macro = mandoc_strdup(iv != 1 ||
2739: strcmp(buf->buf + pos, "an-trap") ?
2740: buf->buf + pos : "br");
1.149 schwarze 2741: return ROFF_IGN;
1.47 schwarze 2742: }
2743:
2744: static enum rofferr
2745: roff_Dd(ROFF_ARGS)
2746: {
1.187 ! schwarze 2747: int mask;
! 2748: enum roff_tok t, te;
1.99 schwarze 2749:
1.187 ! schwarze 2750: switch (tok) {
! 2751: case ROFF_Dd:
! 2752: tok = MDOC_Dd;
! 2753: te = MDOC_MAX;
! 2754: if (r->format == 0)
! 2755: r->format = MPARSE_MDOC;
! 2756: mask = MPARSE_MDOC | MPARSE_QUICK;
! 2757: break;
! 2758: case ROFF_TH:
! 2759: tok = MAN_TH;
! 2760: te = MAN_MAX;
! 2761: if (r->format == 0)
! 2762: r->format = MPARSE_MAN;
! 2763: mask = MPARSE_QUICK;
! 2764: break;
! 2765: default:
! 2766: abort();
! 2767: }
! 2768: if ((r->options & mask) == 0)
! 2769: for (t = tok; t < te; t++)
! 2770: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 2771: return ROFF_CONT;
1.14 schwarze 2772: }
2773:
2774: static enum rofferr
1.27 schwarze 2775: roff_TE(ROFF_ARGS)
2776: {
2777:
2778: if (NULL == r->tbl)
1.94 schwarze 2779: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2780: ln, ppos, "TE");
1.130 schwarze 2781: else if ( ! tbl_end(&r->tbl)) {
2782: free(buf->buf);
2783: buf->buf = mandoc_strdup(".sp");
2784: buf->sz = 4;
1.149 schwarze 2785: return ROFF_REPARSE;
1.130 schwarze 2786: }
1.149 schwarze 2787: return ROFF_IGN;
1.27 schwarze 2788: }
2789:
2790: static enum rofferr
2791: roff_T_(ROFF_ARGS)
2792: {
2793:
2794: if (NULL == r->tbl)
1.94 schwarze 2795: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2796: ln, ppos, "T&");
1.27 schwarze 2797: else
1.168 schwarze 2798: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 2799:
1.149 schwarze 2800: return ROFF_IGN;
1.27 schwarze 2801: }
2802:
1.102 schwarze 2803: /*
2804: * Handle in-line equation delimiters.
2805: */
2806: static enum rofferr
1.110 schwarze 2807: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2808: {
1.105 schwarze 2809: char *cp1, *cp2;
2810: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2811:
1.102 schwarze 2812: /*
2813: * Outside equations, look for an opening delimiter.
2814: * If we are inside an equation, we already know it is
2815: * in-line, or this function wouldn't have been called;
2816: * so look for a closing delimiter.
2817: */
2818:
1.110 schwarze 2819: cp1 = buf->buf + pos;
1.102 schwarze 2820: cp2 = strchr(cp1, r->eqn == NULL ?
2821: r->last_eqn->odelim : r->last_eqn->cdelim);
2822: if (cp2 == NULL)
1.149 schwarze 2823: return ROFF_CONT;
1.102 schwarze 2824:
1.105 schwarze 2825: *cp2++ = '\0';
2826: bef_pr = bef_nl = aft_nl = aft_pr = "";
2827:
2828: /* Handle preceding text, protecting whitespace. */
2829:
1.110 schwarze 2830: if (*buf->buf != '\0') {
1.105 schwarze 2831: if (r->eqn == NULL)
2832: bef_pr = "\\&";
2833: bef_nl = "\n";
2834: }
2835:
2836: /*
2837: * Prepare replacing the delimiter with an equation macro
2838: * and drop leading white space from the equation.
2839: */
1.102 schwarze 2840:
1.105 schwarze 2841: if (r->eqn == NULL) {
2842: while (*cp2 == ' ')
2843: cp2++;
2844: mac = ".EQ";
2845: } else
2846: mac = ".EN";
2847:
2848: /* Handle following text, protecting whitespace. */
2849:
2850: if (*cp2 != '\0') {
2851: aft_nl = "\n";
2852: if (r->eqn != NULL)
2853: aft_pr = "\\&";
2854: }
2855:
2856: /* Do the actual replacement. */
2857:
1.110 schwarze 2858: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2859: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2860: free(buf->buf);
2861: buf->buf = cp1;
1.102 schwarze 2862:
2863: /* Toggle the in-line state of the eqn subsystem. */
2864:
2865: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2866: return ROFF_REPARSE;
1.41 schwarze 2867: }
2868:
1.107 schwarze 2869: static enum rofferr
2870: roff_EQ(ROFF_ARGS)
1.32 schwarze 2871: {
1.41 schwarze 2872: struct eqn_node *e;
1.32 schwarze 2873:
1.110 schwarze 2874: assert(r->eqn == NULL);
1.107 schwarze 2875: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2876:
1.102 schwarze 2877: if (r->last_eqn) {
1.32 schwarze 2878: r->last_eqn->next = e;
1.102 schwarze 2879: e->delim = r->last_eqn->delim;
2880: e->odelim = r->last_eqn->odelim;
2881: e->cdelim = r->last_eqn->cdelim;
2882: } else
1.32 schwarze 2883: r->first_eqn = r->last_eqn = e;
2884:
2885: r->eqn = r->last_eqn = e;
1.41 schwarze 2886:
1.110 schwarze 2887: if (buf->buf[pos] != '\0')
1.107 schwarze 2888: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2889: ".EQ %s", buf->buf + pos);
1.41 schwarze 2890:
1.149 schwarze 2891: return ROFF_IGN;
1.32 schwarze 2892: }
2893:
2894: static enum rofferr
2895: roff_EN(ROFF_ARGS)
2896: {
2897:
1.94 schwarze 2898: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.149 schwarze 2899: return ROFF_IGN;
1.32 schwarze 2900: }
2901:
2902: static enum rofferr
1.27 schwarze 2903: roff_TS(ROFF_ARGS)
2904: {
1.49 schwarze 2905: struct tbl_node *tbl;
1.27 schwarze 2906:
2907: if (r->tbl) {
1.94 schwarze 2908: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2909: ln, ppos, "TS breaks TS");
1.41 schwarze 2910: tbl_end(&r->tbl);
1.27 schwarze 2911: }
2912:
1.49 schwarze 2913: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2914:
2915: if (r->last_tbl)
1.49 schwarze 2916: r->last_tbl->next = tbl;
1.27 schwarze 2917: else
1.49 schwarze 2918: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2919:
1.49 schwarze 2920: r->tbl = r->last_tbl = tbl;
1.169 schwarze 2921: return ROFF_IGN;
2922: }
2923:
2924: static enum rofferr
2925: roff_onearg(ROFF_ARGS)
2926: {
2927: struct roff_node *n;
2928: char *cp;
1.177 schwarze 2929: int npos;
1.169 schwarze 2930:
1.174 schwarze 2931: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
2932: (tok == ROFF_sp || tok == ROFF_ti))
2933: man_breakscope(r->man, tok);
2934:
1.181 schwarze 2935: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 2936: r->man->last = roffce_node;
2937: r->man->next = ROFF_NEXT_SIBLING;
2938: }
2939:
1.169 schwarze 2940: roff_elem_alloc(r->man, ln, ppos, tok);
2941: n = r->man->last;
2942:
2943: cp = buf->buf + pos;
2944: if (*cp != '\0') {
2945: while (*cp != '\0' && *cp != ' ')
2946: cp++;
2947: while (*cp == ' ')
2948: *cp++ = '\0';
2949: if (*cp != '\0')
2950: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2951: r->parse, ln, cp - buf->buf,
2952: "%s ... %s", roff_name[tok], cp);
2953: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 2954: }
2955:
1.181 schwarze 2956: if (tok == ROFF_ce || tok == ROFF_rj) {
2957: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 2958: roff_word_alloc(r->man, ln, pos, "1");
2959: r->man->last->flags |= NODE_NOSRC;
2960: }
2961: npos = 0;
2962: if (roff_evalnum(r, ln, r->man->last->string, &npos,
2963: &roffce_lines, 0) == 0) {
2964: mandoc_vmsg(MANDOCERR_CE_NONUM,
2965: r->parse, ln, pos, "ce %s", buf->buf + pos);
2966: roffce_lines = 1;
2967: }
2968: if (roffce_lines < 1) {
2969: r->man->last = r->man->last->parent;
2970: roffce_node = NULL;
2971: roffce_lines = 0;
2972: } else
2973: roffce_node = r->man->last->parent;
2974: } else {
2975: n->flags |= NODE_VALID | NODE_ENDED;
2976: r->man->last = n;
2977: }
2978: n->flags |= NODE_LINE;
1.172 schwarze 2979: r->man->next = ROFF_NEXT_SIBLING;
2980: return ROFF_IGN;
2981: }
2982:
2983: static enum rofferr
2984: roff_manyarg(ROFF_ARGS)
2985: {
2986: struct roff_node *n;
2987: char *sp, *ep;
2988:
2989: roff_elem_alloc(r->man, ln, ppos, tok);
2990: n = r->man->last;
2991:
2992: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
2993: while (*ep != '\0' && *ep != ' ')
2994: ep++;
2995: while (*ep == ' ')
2996: *ep++ = '\0';
2997: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 2998: }
2999:
3000: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3001: r->man->last = n;
3002: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3003: return ROFF_IGN;
1.123 schwarze 3004: }
3005:
3006: static enum rofferr
1.183 schwarze 3007: roff_als(ROFF_ARGS)
3008: {
3009: char *oldn, *newn, *end, *value;
3010: size_t oldsz, newsz, valsz;
3011:
3012: newn = oldn = buf->buf + pos;
3013: if (*newn == '\0')
3014: return ROFF_IGN;
3015:
3016: newsz = roff_getname(r, &oldn, ln, pos);
3017: if (newn[newsz] == '\\' || *oldn == '\0')
3018: return ROFF_IGN;
3019:
3020: end = oldn;
3021: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3022: if (oldsz == 0)
3023: return ROFF_IGN;
3024:
1.187 ! schwarze 3025: valsz = mandoc_asprintf(&value, ".%.*s \\$*\\\"\n",
! 3026: (int)oldsz, oldn);
1.183 schwarze 3027: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3028: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3029: free(value);
3030: return ROFF_IGN;
3031: }
3032:
3033: static enum rofferr
1.168 schwarze 3034: roff_br(ROFF_ARGS)
1.123 schwarze 3035: {
1.174 schwarze 3036: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3037: man_breakscope(r->man, ROFF_br);
1.168 schwarze 3038: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3039: if (buf->buf[pos] != '\0')
3040: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3041: "%s %s", roff_name[tok], buf->buf + pos);
3042: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3043: r->man->next = ROFF_NEXT_SIBLING;
3044: return ROFF_IGN;
1.27 schwarze 3045: }
3046:
3047: static enum rofferr
1.48 schwarze 3048: roff_cc(ROFF_ARGS)
3049: {
3050: const char *p;
3051:
1.110 schwarze 3052: p = buf->buf + pos;
1.48 schwarze 3053:
1.110 schwarze 3054: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3055: r->control = '\0';
1.48 schwarze 3056:
1.110 schwarze 3057: if (*p != '\0')
1.132 schwarze 3058: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3059: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3060:
1.149 schwarze 3061: return ROFF_IGN;
1.48 schwarze 3062: }
3063:
3064: static enum rofferr
1.175 schwarze 3065: roff_ec(ROFF_ARGS)
3066: {
3067: const char *p;
3068:
3069: p = buf->buf + pos;
3070: if (*p == '\0')
3071: r->escape = '\\';
3072: else {
3073: r->escape = *p;
3074: if (*++p != '\0')
3075: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3076: ln, p - buf->buf, "ec ... %s", p);
3077: }
3078: return ROFF_IGN;
3079: }
3080:
3081: static enum rofferr
3082: roff_eo(ROFF_ARGS)
3083: {
3084: r->escape = '\0';
3085: if (buf->buf[pos] != '\0')
3086: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3087: ln, pos, "eo %s", buf->buf + pos);
3088: return ROFF_IGN;
3089: }
3090:
3091: static enum rofferr
1.42 schwarze 3092: roff_tr(ROFF_ARGS)
3093: {
3094: const char *p, *first, *second;
3095: size_t fsz, ssz;
3096: enum mandoc_esc esc;
3097:
1.110 schwarze 3098: p = buf->buf + pos;
1.42 schwarze 3099:
1.110 schwarze 3100: if (*p == '\0') {
1.132 schwarze 3101: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 3102: return ROFF_IGN;
1.42 schwarze 3103: }
3104:
1.110 schwarze 3105: while (*p != '\0') {
1.42 schwarze 3106: fsz = ssz = 1;
3107:
3108: first = p++;
1.110 schwarze 3109: if (*first == '\\') {
1.42 schwarze 3110: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3111: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3112: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3113: ln, (int)(p - buf->buf), first);
1.149 schwarze 3114: return ROFF_IGN;
1.42 schwarze 3115: }
3116: fsz = (size_t)(p - first);
3117: }
3118:
3119: second = p++;
1.110 schwarze 3120: if (*second == '\\') {
1.42 schwarze 3121: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3122: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3123: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3124: ln, (int)(p - buf->buf), second);
1.149 schwarze 3125: return ROFF_IGN;
1.42 schwarze 3126: }
3127: ssz = (size_t)(p - second);
1.110 schwarze 3128: } else if (*second == '\0') {
1.132 schwarze 3129: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3130: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3131: second = " ";
3132: p--;
3133: }
3134:
3135: if (fsz > 1) {
1.80 schwarze 3136: roff_setstrn(&r->xmbtab, first, fsz,
3137: second, ssz, 0);
1.42 schwarze 3138: continue;
3139: }
3140:
1.110 schwarze 3141: if (r->xtab == NULL)
1.80 schwarze 3142: r->xtab = mandoc_calloc(128,
3143: sizeof(struct roffstr));
1.42 schwarze 3144:
3145: free(r->xtab[(int)*first].p);
3146: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3147: r->xtab[(int)*first].sz = ssz;
3148: }
3149:
1.149 schwarze 3150: return ROFF_IGN;
1.42 schwarze 3151: }
3152:
3153: static enum rofferr
1.178 schwarze 3154: roff_rn(ROFF_ARGS)
3155: {
3156: const char *value;
3157: char *oldn, *newn, *end;
3158: size_t oldsz, newsz;
1.187 ! schwarze 3159: int deftype;
1.178 schwarze 3160:
3161: oldn = newn = buf->buf + pos;
3162: if (*oldn == '\0')
3163: return ROFF_IGN;
3164:
3165: oldsz = roff_getname(r, &newn, ln, pos);
3166: if (oldn[oldsz] == '\\' || *newn == '\0')
3167: return ROFF_IGN;
3168:
3169: end = newn;
3170: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3171: if (newsz == 0)
3172: return ROFF_IGN;
3173:
1.187 ! schwarze 3174: deftype = ROFFDEF_ANY;
! 3175: value = roff_getstrn(r, oldn, oldsz, &deftype);
! 3176: switch (deftype) {
! 3177: case ROFFDEF_USER:
1.178 schwarze 3178: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3179: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3180: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 ! schwarze 3181: break;
! 3182: case ROFFDEF_PRE:
! 3183: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
! 3184: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
! 3185: break;
! 3186: case ROFFDEF_REN:
1.178 schwarze 3187: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3188: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 ! schwarze 3189: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
! 3190: break;
! 3191: case ROFFDEF_STD:
1.178 schwarze 3192: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 ! schwarze 3193: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
! 3194: break;
! 3195: default:
! 3196: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
! 3197: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
! 3198: break;
! 3199: }
1.178 schwarze 3200: return ROFF_IGN;
3201: }
3202:
3203: static enum rofferr
1.14 schwarze 3204: roff_so(ROFF_ARGS)
3205: {
1.121 schwarze 3206: char *name, *cp;
1.15 schwarze 3207:
1.110 schwarze 3208: name = buf->buf + pos;
1.97 schwarze 3209: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3210:
1.22 schwarze 3211: /*
3212: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3213: * opening anything that's not in our cwd or anything beneath
3214: * it. Thus, explicitly disallow traversing up the file-system
3215: * or using absolute paths.
3216: */
3217:
1.110 schwarze 3218: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3219: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3220: ".so %s", name);
1.121 schwarze 3221: buf->sz = mandoc_asprintf(&cp,
3222: ".sp\nSee the file %s.\n.sp", name) + 1;
3223: free(buf->buf);
3224: buf->buf = cp;
3225: *offs = 0;
1.149 schwarze 3226: return ROFF_REPARSE;
1.14 schwarze 3227: }
3228:
3229: *offs = pos;
1.149 schwarze 3230: return ROFF_SO;
1.7 schwarze 3231: }
3232:
1.138 schwarze 3233: /* --- user defined strings and macros ------------------------------------ */
3234:
1.16 schwarze 3235: static enum rofferr
3236: roff_userdef(ROFF_ARGS)
1.12 schwarze 3237: {
1.183 schwarze 3238: const char *arg[16], *ap;
1.16 schwarze 3239: char *cp, *n1, *n2;
1.164 schwarze 3240: int expand_count, i, ib, ie;
1.135 schwarze 3241: size_t asz, rsz;
1.12 schwarze 3242:
1.16 schwarze 3243: /*
3244: * Collect pointers to macro argument strings
1.61 schwarze 3245: * and NUL-terminate them.
1.16 schwarze 3246: */
1.135 schwarze 3247:
1.145 schwarze 3248: r->argc = 0;
1.110 schwarze 3249: cp = buf->buf + pos;
1.183 schwarze 3250: for (i = 0; i < 16; i++) {
1.145 schwarze 3251: if (*cp == '\0')
3252: arg[i] = "";
3253: else {
3254: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3255: r->argc = i + 1;
3256: }
3257: }
1.16 schwarze 3258:
3259: /*
3260: * Expand macro arguments.
1.12 schwarze 3261: */
1.135 schwarze 3262:
3263: buf->sz = strlen(r->current_string) + 1;
1.164 schwarze 3264: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.135 schwarze 3265: memcpy(n1, r->current_string, buf->sz);
1.164 schwarze 3266: expand_count = 0;
1.135 schwarze 3267: while (*cp != '\0') {
3268:
3269: /* Scan ahead for the next argument invocation. */
3270:
3271: if (*cp++ != '\\')
3272: continue;
3273: if (*cp++ != '$')
3274: continue;
1.146 schwarze 3275: if (*cp == '*') { /* \\$* inserts all arguments */
3276: ib = 0;
3277: ie = r->argc - 1;
3278: } else { /* \\$1 .. \\$9 insert one argument */
3279: ib = ie = *cp - '1';
3280: if (ib < 0 || ib > 8)
3281: continue;
3282: }
1.135 schwarze 3283: cp -= 2;
1.164 schwarze 3284:
3285: /*
3286: * Prevent infinite recursion.
3287: */
3288:
3289: if (cp >= n2)
3290: expand_count = 1;
3291: else if (++expand_count > EXPAND_LIMIT) {
3292: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3293: ln, (int)(cp - n1), NULL);
1.165 schwarze 3294: free(buf->buf);
3295: buf->buf = n1;
1.164 schwarze 3296: return ROFF_IGN;
3297: }
1.135 schwarze 3298:
3299: /*
3300: * Determine the size of the expanded argument,
3301: * taking escaping of quotes into account.
3302: */
3303:
1.146 schwarze 3304: asz = ie > ib ? ie - ib : 0; /* for blanks */
3305: for (i = ib; i <= ie; i++) {
3306: for (ap = arg[i]; *ap != '\0'; ap++) {
3307: asz++;
3308: if (*ap == '"')
3309: asz += 3;
3310: }
1.135 schwarze 3311: }
3312: if (asz != 3) {
3313:
3314: /*
3315: * Determine the size of the rest of the
3316: * unexpanded macro, including the NUL.
3317: */
3318:
3319: rsz = buf->sz - (cp - n1) - 3;
3320:
3321: /*
3322: * When shrinking, move before
3323: * releasing the storage.
3324: */
3325:
3326: if (asz < 3)
3327: memmove(cp + asz, cp + 3, rsz);
3328:
3329: /*
3330: * Resize the storage for the macro
3331: * and readjust the parse pointer.
3332: */
3333:
3334: buf->sz += asz - 3;
3335: n2 = mandoc_realloc(n1, buf->sz);
3336: cp = n2 + (cp - n1);
3337: n1 = n2;
3338:
3339: /*
3340: * When growing, make room
3341: * for the expanded argument.
3342: */
3343:
3344: if (asz > 3)
3345: memmove(cp + asz, cp + 3, rsz);
3346: }
3347:
3348: /* Copy the expanded argument, escaping quotes. */
3349:
3350: n2 = cp;
1.146 schwarze 3351: for (i = ib; i <= ie; i++) {
3352: for (ap = arg[i]; *ap != '\0'; ap++) {
3353: if (*ap == '"') {
3354: memcpy(n2, "\\(dq", 4);
3355: n2 += 4;
3356: } else
3357: *n2++ = *ap;
3358: }
3359: if (i < ie)
3360: *n2++ = ' ';
1.16 schwarze 3361: }
1.12 schwarze 3362: }
3363:
1.16 schwarze 3364: /*
3365: * Replace the macro invocation
3366: * by the expanded macro.
3367: */
1.135 schwarze 3368:
1.110 schwarze 3369: free(buf->buf);
3370: buf->buf = n1;
1.120 schwarze 3371: *offs = 0;
1.16 schwarze 3372:
1.149 schwarze 3373: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3374: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3375: }
1.28 schwarze 3376:
1.178 schwarze 3377: /*
3378: * Calling a high-level macro that was renamed with .rn.
3379: * r->current_string has already been set up by roff_parse().
3380: */
3381: static enum rofferr
3382: roff_renamed(ROFF_ARGS)
3383: {
3384: char *nbuf;
3385:
1.187 ! schwarze 3386: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
! 3387: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3388: free(buf->buf);
3389: buf->buf = nbuf;
3390: return ROFF_CONT;
3391: }
3392:
1.85 schwarze 3393: static size_t
1.28 schwarze 3394: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3395: {
3396: char *name, *cp;
1.85 schwarze 3397: size_t namesz;
1.28 schwarze 3398:
3399: name = *cpp;
3400: if ('\0' == *name)
1.149 schwarze 3401: return 0;
1.28 schwarze 3402:
1.85 schwarze 3403: /* Read until end of name and terminate it with NUL. */
3404: for (cp = name; 1; cp++) {
3405: if ('\0' == *cp || ' ' == *cp) {
3406: namesz = cp - name;
3407: break;
3408: }
1.28 schwarze 3409: if ('\\' != *cp)
3410: continue;
1.88 schwarze 3411: namesz = cp - name;
3412: if ('{' == cp[1] || '}' == cp[1])
3413: break;
1.28 schwarze 3414: cp++;
3415: if ('\\' == *cp)
3416: continue;
1.97 schwarze 3417: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3418: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3419: mandoc_escape((const char **)&cp, NULL, NULL);
3420: break;
1.28 schwarze 3421: }
3422:
3423: /* Read past spaces. */
3424: while (' ' == *cp)
3425: cp++;
3426:
3427: *cpp = cp;
1.149 schwarze 3428: return namesz;
1.28 schwarze 3429: }
3430:
1.16 schwarze 3431: /*
3432: * Store *string into the user-defined string called *name.
3433: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3434: * append == 0: replace mode
3435: * append == 1: single-line append mode
3436: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3437: */
1.8 schwarze 3438: static void
1.16 schwarze 3439: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3440: int append)
1.7 schwarze 3441: {
1.187 ! schwarze 3442: size_t namesz;
1.42 schwarze 3443:
1.187 ! schwarze 3444: namesz = strlen(name);
! 3445: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3446: string ? strlen(string) : 0, append);
1.187 ! schwarze 3447: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3448: }
3449:
3450: static void
3451: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3452: const char *string, size_t stringsz, int append)
1.42 schwarze 3453: {
3454: struct roffkv *n;
3455: char *c;
3456: int i;
3457: size_t oldch, newch;
1.7 schwarze 3458:
1.16 schwarze 3459: /* Search for an existing string with the same name. */
1.42 schwarze 3460: n = *r;
3461:
1.84 schwarze 3462: while (n && (namesz != n->key.sz ||
3463: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3464: n = n->next;
1.8 schwarze 3465:
3466: if (NULL == n) {
1.16 schwarze 3467: /* Create a new string table entry. */
1.42 schwarze 3468: n = mandoc_malloc(sizeof(struct roffkv));
3469: n->key.p = mandoc_strndup(name, namesz);
3470: n->key.sz = namesz;
3471: n->val.p = NULL;
3472: n->val.sz = 0;
3473: n->next = *r;
3474: *r = n;
1.66 schwarze 3475: } else if (0 == append) {
1.42 schwarze 3476: free(n->val.p);
3477: n->val.p = NULL;
3478: n->val.sz = 0;
1.16 schwarze 3479: }
3480:
3481: if (NULL == string)
3482: return;
3483:
3484: /*
3485: * One additional byte for the '\n' in multiline mode,
3486: * and one for the terminating '\0'.
3487: */
1.66 schwarze 3488: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3489:
3490: if (NULL == n->val.p) {
3491: n->val.p = mandoc_malloc(newch);
3492: *n->val.p = '\0';
1.16 schwarze 3493: oldch = 0;
3494: } else {
1.42 schwarze 3495: oldch = n->val.sz;
3496: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3497: }
3498:
3499: /* Skip existing content in the destination buffer. */
1.42 schwarze 3500: c = n->val.p + (int)oldch;
1.16 schwarze 3501:
3502: /* Append new content to the destination buffer. */
1.42 schwarze 3503: i = 0;
3504: while (i < (int)stringsz) {
1.16 schwarze 3505: /*
3506: * Rudimentary roff copy mode:
3507: * Handle escaped backslashes.
3508: */
1.42 schwarze 3509: if ('\\' == string[i] && '\\' == string[i + 1])
3510: i++;
3511: *c++ = string[i++];
1.16 schwarze 3512: }
1.8 schwarze 3513:
1.16 schwarze 3514: /* Append terminating bytes. */
1.66 schwarze 3515: if (1 < append)
1.16 schwarze 3516: *c++ = '\n';
1.42 schwarze 3517:
1.16 schwarze 3518: *c = '\0';
1.42 schwarze 3519: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3520: }
3521:
1.8 schwarze 3522: static const char *
1.187 ! schwarze 3523: roff_getstrn(const struct roff *r, const char *name, size_t len,
! 3524: int *deftype)
1.7 schwarze 3525: {
1.187 ! schwarze 3526: const struct roffkv *n;
! 3527: int i;
! 3528: enum roff_tok tok;
! 3529:
! 3530: if (*deftype & ROFFDEF_USER) {
! 3531: for (n = r->strtab; n != NULL; n = n->next) {
! 3532: if (strncmp(name, n->key.p, len) == 0 &&
! 3533: n->key.p[len] == '\0' &&
! 3534: n->val.p != NULL) {
! 3535: *deftype = ROFFDEF_USER;
! 3536: return n->val.p;
! 3537: }
! 3538: }
! 3539: }
! 3540: if (*deftype & ROFFDEF_PRE) {
! 3541: for (i = 0; i < PREDEFS_MAX; i++) {
! 3542: if (strncmp(name, predefs[i].name, len) == 0 &&
! 3543: predefs[i].name[len] == '\0') {
! 3544: *deftype = ROFFDEF_PRE;
! 3545: return predefs[i].str;
! 3546: }
! 3547: }
! 3548: }
! 3549: if (*deftype & ROFFDEF_REN) {
! 3550: for (n = r->rentab; n != NULL; n = n->next) {
! 3551: if (strncmp(name, n->key.p, len) == 0 &&
! 3552: n->key.p[len] == '\0' &&
! 3553: n->val.p != NULL) {
! 3554: *deftype = ROFFDEF_REN;
! 3555: return n->val.p;
! 3556: }
! 3557: }
! 3558: }
! 3559: if (*deftype & ROFFDEF_STD) {
! 3560: if (r->man->macroset != MACROSET_MAN) {
! 3561: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
! 3562: if (strncmp(name, roff_name[tok], len) == 0 &&
! 3563: roff_name[tok][len] == '\0') {
! 3564: *deftype = ROFFDEF_STD;
! 3565: return NULL;
! 3566: }
! 3567: }
! 3568: }
! 3569: if (r->man->macroset != MACROSET_MDOC) {
! 3570: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
! 3571: if (strncmp(name, roff_name[tok], len) == 0 &&
! 3572: roff_name[tok][len] == '\0') {
! 3573: *deftype = ROFFDEF_STD;
! 3574: return NULL;
! 3575: }
! 3576: }
! 3577: }
! 3578: }
! 3579: *deftype = 0;
1.149 schwarze 3580: return NULL;
1.7 schwarze 3581: }
3582:
1.8 schwarze 3583: static void
1.42 schwarze 3584: roff_freestr(struct roffkv *r)
1.7 schwarze 3585: {
1.42 schwarze 3586: struct roffkv *n, *nn;
1.7 schwarze 3587:
1.42 schwarze 3588: for (n = r; n; n = nn) {
3589: free(n->key.p);
3590: free(n->val.p);
1.7 schwarze 3591: nn = n->next;
3592: free(n);
3593: }
1.27 schwarze 3594: }
1.138 schwarze 3595:
3596: /* --- accessors and utility functions ------------------------------------ */
1.27 schwarze 3597:
3598: const struct tbl_span *
3599: roff_span(const struct roff *r)
3600: {
1.80 schwarze 3601:
1.149 schwarze 3602: return r->tbl ? tbl_span(r->tbl) : NULL;
1.32 schwarze 3603: }
3604:
3605: const struct eqn *
3606: roff_eqn(const struct roff *r)
3607: {
1.80 schwarze 3608:
1.149 schwarze 3609: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.42 schwarze 3610: }
3611:
3612: /*
3613: * Duplicate an input string, making the appropriate character
3614: * conversations (as stipulated by `tr') along the way.
3615: * Returns a heap-allocated string with all the replacements made.
3616: */
3617: char *
3618: roff_strdup(const struct roff *r, const char *p)
3619: {
3620: const struct roffkv *cp;
3621: char *res;
3622: const char *pp;
3623: size_t ssz, sz;
3624: enum mandoc_esc esc;
3625:
3626: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3627: return mandoc_strdup(p);
1.42 schwarze 3628: else if ('\0' == *p)
1.149 schwarze 3629: return mandoc_strdup("");
1.42 schwarze 3630:
3631: /*
3632: * Step through each character looking for term matches
3633: * (remember that a `tr' can be invoked with an escape, which is
3634: * a glyph but the escape is multi-character).
3635: * We only do this if the character hash has been initialised
3636: * and the string is >0 length.
3637: */
3638:
3639: res = NULL;
3640: ssz = 0;
3641:
3642: while ('\0' != *p) {
1.161 schwarze 3643: assert((unsigned int)*p < 128);
3644: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3645: sz = r->xtab[(int)*p].sz;
3646: res = mandoc_realloc(res, ssz + sz + 1);
3647: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3648: ssz += sz;
3649: p++;
3650: continue;
3651: } else if ('\\' != *p) {
3652: res = mandoc_realloc(res, ssz + 2);
3653: res[ssz++] = *p++;
3654: continue;
3655: }
3656:
3657: /* Search for term matches. */
3658: for (cp = r->xmbtab; cp; cp = cp->next)
3659: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3660: break;
3661:
3662: if (NULL != cp) {
3663: /*
3664: * A match has been found.
3665: * Append the match to the array and move
3666: * forward by its keysize.
3667: */
1.80 schwarze 3668: res = mandoc_realloc(res,
3669: ssz + cp->val.sz + 1);
1.42 schwarze 3670: memcpy(res + ssz, cp->val.p, cp->val.sz);
3671: ssz += cp->val.sz;
3672: p += (int)cp->key.sz;
3673: continue;
3674: }
3675:
3676: /*
3677: * Handle escapes carefully: we need to copy
3678: * over just the escape itself, or else we might
3679: * do replacements within the escape itself.
3680: * Make sure to pass along the bogus string.
3681: */
3682: pp = p++;
3683: esc = mandoc_escape(&p, NULL, NULL);
3684: if (ESCAPE_ERROR == esc) {
3685: sz = strlen(pp);
3686: res = mandoc_realloc(res, ssz + sz + 1);
3687: memcpy(res + ssz, pp, sz);
3688: break;
3689: }
1.80 schwarze 3690: /*
3691: * We bail out on bad escapes.
1.42 schwarze 3692: * No need to warn: we already did so when
3693: * roff_res() was called.
3694: */
3695: sz = (int)(p - pp);
3696: res = mandoc_realloc(res, ssz + sz + 1);
3697: memcpy(res + ssz, pp, sz);
3698: ssz += sz;
3699: }
3700:
3701: res[(int)ssz] = '\0';
1.149 schwarze 3702: return res;
1.99 schwarze 3703: }
3704:
3705: int
3706: roff_getformat(const struct roff *r)
3707: {
3708:
1.149 schwarze 3709: return r->format;
1.48 schwarze 3710: }
3711:
3712: /*
1.80 schwarze 3713: * Find out whether a line is a macro line or not.
1.48 schwarze 3714: * If it is, adjust the current position and return one; if it isn't,
3715: * return zero and don't change the current position.
3716: * If the control character has been set with `.cc', then let that grain
3717: * precedence.
3718: * This is slighly contrary to groff, where using the non-breaking
3719: * control character when `cc' has been invoked will cause the
3720: * non-breaking macro contents to be printed verbatim.
3721: */
3722: int
3723: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3724: {
3725: int pos;
3726:
3727: pos = *ppos;
3728:
1.175 schwarze 3729: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 3730: pos++;
1.175 schwarze 3731: else if (r->control != '\0')
1.149 schwarze 3732: return 0;
1.48 schwarze 3733: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3734: pos += 2;
3735: else if ('.' == cp[pos] || '\'' == cp[pos])
3736: pos++;
3737: else
1.149 schwarze 3738: return 0;
1.48 schwarze 3739:
3740: while (' ' == cp[pos] || '\t' == cp[pos])
3741: pos++;
3742:
3743: *ppos = pos;
1.149 schwarze 3744: return 1;
1.1 schwarze 3745: }
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