Annotation of src/usr.bin/mandoc/roff.c, Revision 1.195
1.195 ! schwarze 1: /* $OpenBSD: roff.c,v 1.194 2017/07/13 15:12:47 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 */
1.191 schwarze 99: struct eqn_node *last_eqn; /* equation parser */
100: struct eqn_node *eqn; /* active equation parser */
1.102 schwarze 101: int eqn_inline; /* current equation is inline */
1.96 schwarze 102: int options; /* parse options */
103: int rstacksz; /* current size limit of rstack */
104: int rstackpos; /* position in rstack */
1.99 schwarze 105: int format; /* current file in mdoc or man format */
1.145 schwarze 106: int argc; /* number of args of the last macro */
1.96 schwarze 107: char control; /* control character */
1.175 schwarze 108: char escape; /* escape character */
1.1 schwarze 109: };
110:
111: struct roffnode {
1.166 schwarze 112: enum roff_tok tok; /* type of node */
1.1 schwarze 113: struct roffnode *parent; /* up one in stack */
114: int line; /* parse line */
115: int col; /* parse col */
1.16 schwarze 116: char *name; /* node name, e.g. macro name */
1.2 schwarze 117: char *end; /* end-rules: custom token */
118: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 119: int rule; /* current evaluation rule */
1.1 schwarze 120: };
121:
122: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 123: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 124: struct buf *buf, /* input buffer */ \
1.1 schwarze 125: int ln, /* parse line */ \
1.2 schwarze 126: int ppos, /* original pos in buffer */ \
127: int pos, /* current pos in buffer */ \
128: int *offs /* reset offset of buffer data */
1.1 schwarze 129:
130: typedef enum rofferr (*roffproc)(ROFF_ARGS);
131:
132: struct roffmac {
1.2 schwarze 133: roffproc proc; /* process new macro */
134: roffproc text; /* process as child text of macro */
135: roffproc sub; /* process as child of macro */
136: int flags;
137: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 138: };
139:
1.37 schwarze 140: struct predef {
141: const char *name; /* predefined input name */
142: const char *str; /* replacement symbol */
143: };
144:
145: #define PREDEF(__name, __str) \
146: { (__name), (__str) },
147:
1.138 schwarze 148: /* --- function prototypes ------------------------------------------------ */
149:
1.42 schwarze 150: static void roffnode_cleanscope(struct roff *);
151: static void roffnode_pop(struct roff *);
1.166 schwarze 152: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 153: const char *, int, int);
1.193 schwarze 154: static void roff_addtbl(struct roff_man *, struct tbl_node *);
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",
1.189 bentley 331: "UE", "MT", "ME", 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;
1.42 schwarze 696: int i;
1.27 schwarze 697:
1.49 schwarze 698: while (NULL != (tbl = r->first_tbl)) {
699: r->first_tbl = tbl->next;
700: tbl_free(tbl);
1.27 schwarze 701: }
702: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 703:
1.191 schwarze 704: if (r->last_eqn != NULL)
705: eqn_free(r->last_eqn);
706: r->last_eqn = r->eqn = NULL;
1.32 schwarze 707:
1.1 schwarze 708: while (r->last)
709: roffnode_pop(r);
1.27 schwarze 710:
1.96 schwarze 711: free (r->rstack);
712: r->rstack = NULL;
713: r->rstacksz = 0;
714: r->rstackpos = -1;
715:
716: roff_freereg(r->regtab);
717: r->regtab = NULL;
718:
1.42 schwarze 719: roff_freestr(r->strtab);
1.178 schwarze 720: roff_freestr(r->rentab);
1.42 schwarze 721: roff_freestr(r->xmbtab);
1.178 schwarze 722: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 723:
724: if (r->xtab)
725: for (i = 0; i < 128; i++)
726: free(r->xtab[i].p);
727: free(r->xtab);
728: r->xtab = NULL;
1.1 schwarze 729: }
730:
731: void
732: roff_reset(struct roff *r)
733: {
734: roff_free1(r);
1.99 schwarze 735: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 736: r->control = '\0';
737: r->escape = '\\';
1.179 schwarze 738: roffce_lines = 0;
739: roffce_node = NULL;
740: roffit_lines = 0;
741: roffit_macro = NULL;
1.1 schwarze 742: }
743:
744: void
745: roff_free(struct roff *r)
746: {
747: roff_free1(r);
1.167 schwarze 748: roffhash_free(r->reqtab);
1.1 schwarze 749: free(r);
750: }
751:
752: struct roff *
1.151 schwarze 753: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 754: {
755: struct roff *r;
756:
1.11 schwarze 757: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 758: r->parse = parse;
1.167 schwarze 759: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.72 schwarze 760: r->options = options;
1.99 schwarze 761: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 762: r->rstackpos = -1;
1.175 schwarze 763: r->escape = '\\';
1.149 schwarze 764: return r;
1.137 schwarze 765: }
766:
1.138 schwarze 767: /* --- syntax tree state data management ---------------------------------- */
768:
1.137 schwarze 769: static void
770: roff_man_free1(struct roff_man *man)
771: {
772:
1.138 schwarze 773: if (man->first != NULL)
774: roff_node_delete(man, man->first);
1.137 schwarze 775: free(man->meta.msec);
776: free(man->meta.vol);
777: free(man->meta.os);
778: free(man->meta.arch);
779: free(man->meta.title);
780: free(man->meta.name);
781: free(man->meta.date);
782: }
783:
784: static void
785: roff_man_alloc1(struct roff_man *man)
786: {
787:
788: memset(&man->meta, 0, sizeof(man->meta));
789: man->first = mandoc_calloc(1, sizeof(*man->first));
790: man->first->type = ROFFT_ROOT;
791: man->last = man->first;
792: man->last_es = NULL;
793: man->flags = 0;
794: man->macroset = MACROSET_NONE;
795: man->lastsec = man->lastnamed = SEC_NONE;
796: man->next = ROFF_NEXT_CHILD;
797: }
798:
799: void
800: roff_man_reset(struct roff_man *man)
801: {
802:
803: roff_man_free1(man);
804: roff_man_alloc1(man);
805: }
806:
807: void
808: roff_man_free(struct roff_man *man)
809: {
810:
811: roff_man_free1(man);
812: free(man);
813: }
814:
815: struct roff_man *
816: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.188 schwarze 817: const char *os_s, int quick)
1.137 schwarze 818: {
819: struct roff_man *man;
820:
821: man = mandoc_calloc(1, sizeof(*man));
822: man->parse = parse;
823: man->roff = roff;
1.188 schwarze 824: man->os_s = os_s;
1.137 schwarze 825: man->quick = quick;
826: roff_man_alloc1(man);
1.168 schwarze 827: roff->man = man;
1.149 schwarze 828: return man;
1.1 schwarze 829: }
830:
1.138 schwarze 831: /* --- syntax tree handling ----------------------------------------------- */
832:
833: struct roff_node *
834: roff_node_alloc(struct roff_man *man, int line, int pos,
835: enum roff_type type, int tok)
836: {
837: struct roff_node *n;
838:
839: n = mandoc_calloc(1, sizeof(*n));
840: n->line = line;
841: n->pos = pos;
842: n->tok = tok;
843: n->type = type;
844: n->sec = man->lastsec;
845:
846: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 847: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 848: else
1.157 schwarze 849: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 850: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 851: n->flags |= NODE_LINE;
1.138 schwarze 852: man->flags &= ~MDOC_NEWLINE;
853:
1.149 schwarze 854: return n;
1.138 schwarze 855: }
856:
857: void
858: roff_node_append(struct roff_man *man, struct roff_node *n)
859: {
860:
861: switch (man->next) {
862: case ROFF_NEXT_SIBLING:
1.153 schwarze 863: if (man->last->next != NULL) {
864: n->next = man->last->next;
865: man->last->next->prev = n;
866: } else
867: man->last->parent->last = n;
1.138 schwarze 868: man->last->next = n;
869: n->prev = man->last;
870: n->parent = man->last->parent;
871: break;
872: case ROFF_NEXT_CHILD:
1.159 schwarze 873: if (man->last->child != NULL) {
874: n->next = man->last->child;
875: man->last->child->prev = n;
876: } else
877: man->last->last = n;
1.138 schwarze 878: man->last->child = n;
879: n->parent = man->last;
880: break;
881: default:
882: abort();
883: }
1.154 schwarze 884: man->last = n;
1.138 schwarze 885:
886: switch (n->type) {
887: case ROFFT_HEAD:
888: n->parent->head = n;
889: break;
890: case ROFFT_BODY:
1.154 schwarze 891: if (n->end != ENDBODY_NOT)
892: return;
1.138 schwarze 893: n->parent->body = n;
894: break;
895: case ROFFT_TAIL:
896: n->parent->tail = n;
897: break;
898: default:
1.154 schwarze 899: return;
1.138 schwarze 900: }
1.154 schwarze 901:
902: /*
903: * Copy over the normalised-data pointer of our parent. Not
904: * everybody has one, but copying a null pointer is fine.
905: */
906:
907: n->norm = n->parent->norm;
908: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 909: }
910:
1.139 schwarze 911: void
912: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
913: {
914: struct roff_node *n;
915:
916: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
917: n->string = roff_strdup(man->roff, word);
918: roff_node_append(man, n);
1.158 schwarze 919: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 920: man->next = ROFF_NEXT_SIBLING;
921: }
922:
923: void
924: roff_word_append(struct roff_man *man, const char *word)
925: {
926: struct roff_node *n;
927: char *addstr, *newstr;
928:
929: n = man->last;
930: addstr = roff_strdup(man->roff, word);
931: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
932: free(addstr);
933: free(n->string);
934: n->string = newstr;
935: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 936: }
937:
938: void
939: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
940: {
941: struct roff_node *n;
942:
943: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
944: roff_node_append(man, n);
945: man->next = ROFF_NEXT_CHILD;
946: }
947:
948: struct roff_node *
949: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
950: {
951: struct roff_node *n;
952:
953: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
954: roff_node_append(man, n);
955: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 956: return n;
1.139 schwarze 957: }
958:
1.138 schwarze 959: struct roff_node *
960: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
961: {
962: struct roff_node *n;
963:
964: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
965: roff_node_append(man, n);
966: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 967: return n;
1.138 schwarze 968: }
969:
970: struct roff_node *
971: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
972: {
973: struct roff_node *n;
974:
975: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
976: roff_node_append(man, n);
977: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 978: return n;
1.139 schwarze 979: }
980:
1.193 schwarze 981: static void
982: roff_addtbl(struct roff_man *man, struct tbl_node *tbl)
1.139 schwarze 983: {
984: struct roff_node *n;
1.193 schwarze 985: const struct tbl_span *span;
1.139 schwarze 986:
987: if (man->macroset == MACROSET_MAN)
1.174 schwarze 988: man_breakscope(man, ROFF_TS);
1.193 schwarze 989: while ((span = tbl_span(tbl)) != NULL) {
990: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
991: n->span = span;
992: roff_node_append(man, n);
993: n->flags |= NODE_VALID | NODE_ENDED;
994: man->next = ROFF_NEXT_SIBLING;
995: }
1.138 schwarze 996: }
997:
998: void
999: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1000: {
1001:
1002: /* Adjust siblings. */
1003:
1004: if (n->prev)
1005: n->prev->next = n->next;
1006: if (n->next)
1007: n->next->prev = n->prev;
1008:
1009: /* Adjust parent. */
1010:
1011: if (n->parent != NULL) {
1012: if (n->parent->child == n)
1013: n->parent->child = n->next;
1014: if (n->parent->last == n)
1015: n->parent->last = n->prev;
1016: }
1017:
1018: /* Adjust parse point. */
1019:
1020: if (man == NULL)
1021: return;
1022: if (man->last == n) {
1023: if (n->prev == NULL) {
1024: man->last = n->parent;
1025: man->next = ROFF_NEXT_CHILD;
1026: } else {
1027: man->last = n->prev;
1028: man->next = ROFF_NEXT_SIBLING;
1029: }
1030: }
1031: if (man->first == n)
1032: man->first = NULL;
1033: }
1034:
1035: void
1036: roff_node_free(struct roff_node *n)
1037: {
1038:
1039: if (n->args != NULL)
1040: mdoc_argv_free(n->args);
1041: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1042: free(n->norm);
1.191 schwarze 1043: if (n->eqn != NULL)
1044: eqn_box_free(n->eqn);
1.138 schwarze 1045: free(n->string);
1046: free(n);
1047: }
1048:
1049: void
1050: roff_node_delete(struct roff_man *man, struct roff_node *n)
1051: {
1052:
1053: while (n->child != NULL)
1054: roff_node_delete(man, n->child);
1055: roff_node_unlink(man, n);
1056: roff_node_free(n);
1.141 schwarze 1057: }
1058:
1059: void
1060: deroff(char **dest, const struct roff_node *n)
1061: {
1062: char *cp;
1063: size_t sz;
1064:
1065: if (n->type != ROFFT_TEXT) {
1066: for (n = n->child; n != NULL; n = n->next)
1067: deroff(dest, n);
1068: return;
1069: }
1070:
1.160 schwarze 1071: /* Skip leading whitespace. */
1.141 schwarze 1072:
1.160 schwarze 1073: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1074: if (cp[0] == '\\' && cp[1] != '\0' &&
1075: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1076: cp++;
1.160 schwarze 1077: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1078: break;
1079: }
1080:
1.161 schwarze 1081: /* Skip trailing backslash. */
1082:
1083: sz = strlen(cp);
1.162 schwarze 1084: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1085: sz--;
1086:
1.141 schwarze 1087: /* Skip trailing whitespace. */
1088:
1.161 schwarze 1089: for (; sz; sz--)
1.141 schwarze 1090: if ( ! isspace((unsigned char)cp[sz-1]))
1091: break;
1092:
1093: /* Skip empty strings. */
1094:
1095: if (sz == 0)
1096: return;
1097:
1098: if (*dest == NULL) {
1099: *dest = mandoc_strndup(cp, sz);
1100: return;
1101: }
1102:
1103: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1104: free(*dest);
1105: *dest = cp;
1.138 schwarze 1106: }
1107:
1108: /* --- main functions of the roff parser ---------------------------------- */
1109:
1.8 schwarze 1110: /*
1.79 schwarze 1111: * In the current line, expand escape sequences that tend to get
1112: * used in numerical expressions and conditional requests.
1113: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1114: */
1.45 schwarze 1115: static enum rofferr
1.110 schwarze 1116: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1117: {
1.81 schwarze 1118: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1119: const char *start; /* start of the string to process */
1.82 schwarze 1120: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1121: const char *stnam; /* start of the name, after "[(*" */
1122: const char *cp; /* end of the name, e.g. before ']' */
1123: const char *res; /* the string to be substituted */
1.110 schwarze 1124: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1125: size_t maxl; /* expected length of the escape name */
1126: size_t naml; /* actual length of the escape name */
1.109 schwarze 1127: enum mandoc_esc esc; /* type of the escape sequence */
1128: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1129: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1130: int npos; /* position in numeric expression */
1.91 schwarze 1131: int arg_complete; /* argument not interrupted by eol */
1.175 schwarze 1132: int done; /* no more input available */
1.187 schwarze 1133: int deftype; /* type of definition to paste */
1.195 ! schwarze 1134: int rcsid; /* kind of RCS id seen */
1.79 schwarze 1135: char term; /* character terminating the escape */
1.8 schwarze 1136:
1.175 schwarze 1137: /* Search forward for comments. */
1138:
1139: done = 0;
1140: start = buf->buf + pos;
1141: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1142: if (stesc[0] != r->escape || stesc[1] == '\0')
1143: continue;
1144: stesc++;
1145: if (*stesc != '"' && *stesc != '#')
1146: continue;
1.185 schwarze 1147:
1148: /* Comment found, look for RCS id. */
1149:
1.195 ! schwarze 1150: rcsid = 0;
1.185 schwarze 1151: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.195 ! schwarze 1152: rcsid = 1 << MANDOC_OS_OPENBSD;
1.185 schwarze 1153: cp += 8;
1154: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.195 ! schwarze 1155: rcsid = 1 << MANDOC_OS_NETBSD;
1.185 schwarze 1156: cp += 7;
1157: }
1158: if (cp != NULL &&
1159: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1160: strchr(cp, '$') != NULL) {
1.195 ! schwarze 1161: if (r->man->meta.rcsids & rcsid)
1.186 schwarze 1162: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1163: ln, stesc + 1 - buf->buf, stesc + 1);
1.195 ! schwarze 1164: r->man->meta.rcsids |= rcsid;
1.186 schwarze 1165: }
1.185 schwarze 1166:
1167: /* Handle trailing whitespace. */
1168:
1.175 schwarze 1169: cp = strchr(stesc--, '\0') - 1;
1170: if (*cp == '\n') {
1171: done = 1;
1172: cp--;
1173: }
1174: if (*cp == ' ' || *cp == '\t')
1175: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1176: ln, cp - buf->buf, NULL);
1177: while (stesc > start && stesc[-1] == ' ')
1178: stesc--;
1179: *stesc = '\0';
1180: break;
1181: }
1182: if (stesc == start)
1183: return ROFF_CONT;
1184: stesc--;
1185:
1186: /* Notice the end of the input. */
1187:
1188: if (*stesc == '\n') {
1189: *stesc-- = '\0';
1190: done = 1;
1191: }
1192:
1.43 schwarze 1193: expand_count = 0;
1.175 schwarze 1194: while (stesc >= start) {
1.43 schwarze 1195:
1.78 schwarze 1196: /* Search backwards for the next backslash. */
1197:
1.175 schwarze 1198: if (*stesc != r->escape) {
1199: if (*stesc == '\\') {
1200: *stesc = '\0';
1201: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1202: buf->buf, stesc + 1) + 1;
1203: start = nbuf + pos;
1204: stesc = nbuf + (stesc - buf->buf);
1205: free(buf->buf);
1206: buf->buf = nbuf;
1207: }
1208: stesc--;
1.78 schwarze 1209: continue;
1.175 schwarze 1210: }
1.78 schwarze 1211:
1212: /* If it is escaped, skip it. */
1213:
1214: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1215: if (*cp != r->escape)
1.78 schwarze 1216: break;
1217:
1.110 schwarze 1218: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1219: while (stesc > cp)
1220: *stesc-- = '\\';
1.78 schwarze 1221: continue;
1.175 schwarze 1222: } else if (stesc[1] != '\0') {
1223: *stesc = '\\';
1224: } else {
1225: *stesc-- = '\0';
1226: if (done)
1227: continue;
1228: else
1229: return ROFF_APPEND;
1.78 schwarze 1230: }
1.23 schwarze 1231:
1.79 schwarze 1232: /* Decide whether to expand or to check only. */
1.23 schwarze 1233:
1.79 schwarze 1234: term = '\0';
1.78 schwarze 1235: cp = stesc + 1;
1.53 schwarze 1236: switch (*cp) {
1.80 schwarze 1237: case '*':
1.53 schwarze 1238: res = NULL;
1239: break;
1.80 schwarze 1240: case 'B':
1241: case 'w':
1.79 schwarze 1242: term = cp[1];
1243: /* FALLTHROUGH */
1.80 schwarze 1244: case 'n':
1.53 schwarze 1245: res = ubuf;
1246: break;
1247: default:
1.109 schwarze 1248: esc = mandoc_escape(&cp, &stnam, &inaml);
1249: if (esc == ESCAPE_ERROR ||
1250: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1251: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1252: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1253: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1254: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1255: stesc--;
1.78 schwarze 1256: continue;
1.42 schwarze 1257: }
1258:
1.78 schwarze 1259: if (EXPAND_LIMIT < ++expand_count) {
1260: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1261: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1262: return ROFF_IGN;
1.78 schwarze 1263: }
1.23 schwarze 1264:
1265: /*
1266: * The third character decides the length
1.53 schwarze 1267: * of the name of the string or register.
1.23 schwarze 1268: * Save a pointer to the name.
1269: */
1270:
1.110 schwarze 1271: if (term == '\0') {
1.79 schwarze 1272: switch (*++cp) {
1.80 schwarze 1273: case '\0':
1.79 schwarze 1274: maxl = 0;
1275: break;
1.80 schwarze 1276: case '(':
1.79 schwarze 1277: cp++;
1278: maxl = 2;
1279: break;
1.80 schwarze 1280: case '[':
1.79 schwarze 1281: cp++;
1282: term = ']';
1283: maxl = 0;
1284: break;
1285: default:
1286: maxl = 1;
1287: break;
1288: }
1289: } else {
1290: cp += 2;
1.8 schwarze 1291: maxl = 0;
1292: }
1.23 schwarze 1293: stnam = cp;
1.8 schwarze 1294:
1.23 schwarze 1295: /* Advance to the end of the name. */
1.8 schwarze 1296:
1.125 schwarze 1297: naml = 0;
1.91 schwarze 1298: arg_complete = 1;
1.125 schwarze 1299: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1300: if (*cp == '\0') {
1.92 schwarze 1301: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1302: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1303: arg_complete = 0;
1.79 schwarze 1304: break;
1.42 schwarze 1305: }
1.110 schwarze 1306: if (maxl == 0 && *cp == term) {
1.79 schwarze 1307: cp++;
1.125 schwarze 1308: break;
1309: }
1310: if (*cp++ != '\\' || stesc[1] != 'w') {
1311: naml++;
1312: continue;
1313: }
1314: switch (mandoc_escape(&cp, NULL, NULL)) {
1315: case ESCAPE_SPECIAL:
1316: case ESCAPE_UNICODE:
1317: case ESCAPE_NUMBERED:
1318: case ESCAPE_OVERSTRIKE:
1319: naml++;
1320: break;
1321: default:
1.8 schwarze 1322: break;
1.79 schwarze 1323: }
1.8 schwarze 1324: }
1325:
1.23 schwarze 1326: /*
1327: * Retrieve the replacement string; if it is
1328: * undefined, resume searching for escapes.
1329: */
1330:
1.79 schwarze 1331: switch (stesc[1]) {
1.80 schwarze 1332: case '*':
1.187 schwarze 1333: if (arg_complete) {
1334: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1335: res = roff_getstrn(r, stnam, naml, &deftype);
1336: }
1.79 schwarze 1337: break;
1.80 schwarze 1338: case 'B':
1.79 schwarze 1339: npos = 0;
1.91 schwarze 1340: ubuf[0] = arg_complete &&
1.133 schwarze 1341: roff_evalnum(r, ln, stnam, &npos,
1342: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1343: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1344: ubuf[1] = '\0';
1345: break;
1.80 schwarze 1346: case 'n':
1.91 schwarze 1347: if (arg_complete)
1348: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1349: roff_getregn(r, stnam, naml));
1350: else
1351: ubuf[0] = '\0';
1.79 schwarze 1352: break;
1.80 schwarze 1353: case 'w':
1.91 schwarze 1354: /* use even incomplete args */
1.81 schwarze 1355: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1356: 24 * (int)naml);
1357: break;
1358: }
1.8 schwarze 1359:
1.110 schwarze 1360: if (res == NULL) {
1.92 schwarze 1361: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1362: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1363: "%.*s", (int)naml, stnam);
1.37 schwarze 1364: res = "";
1.118 schwarze 1365: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1366: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1367: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1368: return ROFF_IGN;
1.8 schwarze 1369: }
1370:
1.23 schwarze 1371: /* Replace the escape sequence by the string. */
1372:
1.82 schwarze 1373: *stesc = '\0';
1.110 schwarze 1374: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1375: buf->buf, res, cp) + 1;
1.8 schwarze 1376:
1.78 schwarze 1377: /* Prepare for the next replacement. */
1.8 schwarze 1378:
1.78 schwarze 1379: start = nbuf + pos;
1.110 schwarze 1380: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1381: free(buf->buf);
1382: buf->buf = nbuf;
1.42 schwarze 1383: }
1.149 schwarze 1384: return ROFF_CONT;
1.42 schwarze 1385: }
1386:
1387: /*
1.147 schwarze 1388: * Process text streams.
1.42 schwarze 1389: */
1390: static enum rofferr
1.177 schwarze 1391: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1392: {
1393: size_t sz;
1394: const char *start;
1.51 schwarze 1395: char *p;
1396: int isz;
1.42 schwarze 1397: enum mandoc_esc esc;
1398:
1.147 schwarze 1399: /* Spring the input line trap. */
1400:
1401: if (roffit_lines == 1) {
1402: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1403: free(buf->buf);
1404: buf->buf = p;
1405: buf->sz = isz + 1;
1406: *offs = 0;
1407: free(roffit_macro);
1408: roffit_lines = 0;
1.149 schwarze 1409: return ROFF_REPARSE;
1.147 schwarze 1410: } else if (roffit_lines > 1)
1411: --roffit_lines;
1412:
1.177 schwarze 1413: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1414: if (roffce_lines < 1) {
1415: r->man->last = roffce_node;
1416: r->man->next = ROFF_NEXT_SIBLING;
1417: roffce_lines = 0;
1418: roffce_node = NULL;
1419: } else
1420: roffce_lines--;
1421: }
1422:
1.147 schwarze 1423: /* Convert all breakable hyphens into ASCII_HYPH. */
1424:
1.110 schwarze 1425: start = p = buf->buf + pos;
1.42 schwarze 1426:
1.110 schwarze 1427: while (*p != '\0') {
1.42 schwarze 1428: sz = strcspn(p, "-\\");
1429: p += sz;
1430:
1.110 schwarze 1431: if (*p == '\0')
1.42 schwarze 1432: break;
1433:
1.110 schwarze 1434: if (*p == '\\') {
1.42 schwarze 1435: /* Skip over escapes. */
1436: p++;
1.62 schwarze 1437: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1438: if (esc == ESCAPE_ERROR)
1.42 schwarze 1439: break;
1.136 schwarze 1440: while (*p == '-')
1441: p++;
1.42 schwarze 1442: continue;
1443: } else if (p == start) {
1444: p++;
1445: continue;
1446: }
1447:
1.44 schwarze 1448: if (isalpha((unsigned char)p[-1]) &&
1449: isalpha((unsigned char)p[1]))
1.42 schwarze 1450: *p = ASCII_HYPH;
1451: p++;
1.8 schwarze 1452: }
1.149 schwarze 1453: return ROFF_CONT;
1.8 schwarze 1454: }
1455:
1.1 schwarze 1456: enum rofferr
1.110 schwarze 1457: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1458: {
1.166 schwarze 1459: enum roff_tok t;
1.27 schwarze 1460: enum rofferr e;
1.110 schwarze 1461: int pos; /* parse point */
1.115 schwarze 1462: int spos; /* saved parse point for messages */
1.110 schwarze 1463: int ppos; /* original offset in buf->buf */
1464: int ctl; /* macro line (boolean) */
1465:
1466: ppos = pos = *offs;
1.1 schwarze 1467:
1.102 schwarze 1468: /* Handle in-line equation delimiters. */
1469:
1.108 schwarze 1470: if (r->tbl == NULL &&
1471: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1472: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1473: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1474: if (e == ROFF_REPARSE)
1.149 schwarze 1475: return e;
1.102 schwarze 1476: assert(e == ROFF_CONT);
1477: }
1478:
1479: /* Expand some escape sequences. */
1.8 schwarze 1480:
1.110 schwarze 1481: e = roff_res(r, buf, ln, pos);
1.175 schwarze 1482: if (e == ROFF_IGN || e == ROFF_APPEND)
1.149 schwarze 1483: return e;
1.110 schwarze 1484: assert(e == ROFF_CONT);
1.8 schwarze 1485:
1.110 schwarze 1486: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1487:
1.8 schwarze 1488: /*
1.2 schwarze 1489: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1490: * text through the macro's filter.
1491: * Equations process all content themselves.
1492: * Tables process almost all content themselves, but we want
1493: * to warn about macros before passing it there.
1.2 schwarze 1494: */
1495:
1.124 schwarze 1496: if (r->last != NULL && ! ctl) {
1.2 schwarze 1497: t = r->last->tok;
1.110 schwarze 1498: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.166 schwarze 1499: if (e == ROFF_IGN)
1.149 schwarze 1500: return e;
1.166 schwarze 1501: assert(e == ROFF_CONT);
1.54 schwarze 1502: }
1.191 schwarze 1503: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1504: eqn_read(r->eqn, buf->buf + ppos);
1505: return ROFF_IGN;
1506: }
1.193 schwarze 1507: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1508: tbl_read(r->tbl, ln, buf->buf, ppos);
1509: roff_addtbl(r->man, r->tbl);
1510: return ROFF_IGN;
1511: }
1.124 schwarze 1512: if ( ! ctl)
1.177 schwarze 1513: return roff_parsetext(r, buf, pos, offs);
1.100 schwarze 1514:
1515: /* Skip empty request lines. */
1516:
1.110 schwarze 1517: if (buf->buf[pos] == '"') {
1.100 schwarze 1518: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1519: ln, pos, NULL);
1.149 schwarze 1520: return ROFF_IGN;
1.110 schwarze 1521: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1522: return ROFF_IGN;
1.2 schwarze 1523:
1524: /*
1525: * If a scope is open, go to the child handler for that macro,
1526: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1527: * Don't do so if an equation is open.
1.2 schwarze 1528: */
1529:
1530: if (r->last) {
1.1 schwarze 1531: t = r->last->tok;
1.149 schwarze 1532: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1533: }
1534:
1.115 schwarze 1535: /* No scope is open. This is a new request or macro. */
1536:
1537: spos = pos;
1538: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1539:
1540: /* Tables ignore most macros. */
1541:
1.180 schwarze 1542: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1543: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.115 schwarze 1544: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1545: ln, pos, buf->buf + spos);
1.180 schwarze 1546: if (t != TOKEN_NONE)
1.149 schwarze 1547: return ROFF_IGN;
1.129 schwarze 1548: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1549: pos++;
1.163 schwarze 1550: while (buf->buf[pos] == ' ')
1.129 schwarze 1551: pos++;
1.193 schwarze 1552: tbl_read(r->tbl, ln, buf->buf, pos);
1553: roff_addtbl(r->man, r->tbl);
1554: return ROFF_IGN;
1.115 schwarze 1555: }
1556:
1.177 schwarze 1557: /* For now, let high level macros abort .ce mode. */
1558:
1559: if (ctl && roffce_node != NULL &&
1560: (t == TOKEN_NONE || t == ROFF_EQ || t == ROFF_TS)) {
1561: r->man->last = roffce_node;
1562: r->man->next = ROFF_NEXT_SIBLING;
1563: roffce_lines = 0;
1564: roffce_node = NULL;
1565: }
1566:
1.2 schwarze 1567: /*
1.115 schwarze 1568: * This is neither a roff request nor a user-defined macro.
1569: * Let the standard macro set parsers handle it.
1.2 schwarze 1570: */
1571:
1.166 schwarze 1572: if (t == TOKEN_NONE)
1.149 schwarze 1573: return ROFF_CONT;
1.115 schwarze 1574:
1575: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1576:
1.168 schwarze 1577: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1578: }
1579:
1.27 schwarze 1580: void
1.2 schwarze 1581: roff_endparse(struct roff *r)
1582: {
1.193 schwarze 1583: if (r->last != NULL)
1.94 schwarze 1584: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1585: r->last->line, r->last->col,
1.167 schwarze 1586: roff_name[r->last->tok]);
1.27 schwarze 1587:
1.193 schwarze 1588: if (r->eqn != NULL) {
1.94 schwarze 1589: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.191 schwarze 1590: r->eqn->node->line, r->eqn->node->pos, "EQ");
1591: eqn_parse(r->eqn);
1592: r->eqn = NULL;
1.32 schwarze 1593: }
1594:
1.193 schwarze 1595: if (r->tbl != NULL) {
1.94 schwarze 1596: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1597: r->tbl->line, r->tbl->pos, "TS");
1.193 schwarze 1598: tbl_end(r->tbl);
1599: r->tbl = NULL;
1.27 schwarze 1600: }
1.1 schwarze 1601: }
1602:
1603: /*
1604: * Parse a roff node's type from the input buffer. This must be in the
1605: * form of ".foo xxx" in the usual way.
1606: */
1.166 schwarze 1607: static enum roff_tok
1.87 schwarze 1608: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1609: {
1.87 schwarze 1610: char *cp;
1.16 schwarze 1611: const char *mac;
1612: size_t maclen;
1.187 schwarze 1613: int deftype;
1.166 schwarze 1614: enum roff_tok t;
1.1 schwarze 1615:
1.87 schwarze 1616: cp = buf + *pos;
1617:
1618: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1619: return TOKEN_NONE;
1.1 schwarze 1620:
1.87 schwarze 1621: mac = cp;
1622: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1623:
1.187 schwarze 1624: deftype = ROFFDEF_USER | ROFFDEF_REN;
1625: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1626: switch (deftype) {
1627: case ROFFDEF_USER:
1628: t = ROFF_USERDEF;
1629: break;
1630: case ROFFDEF_REN:
1631: t = ROFF_RENAMED;
1632: break;
1633: default:
1634: t = roffhash_find(r->reqtab, mac, maclen);
1635: break;
1636: }
1.166 schwarze 1637: if (t != TOKEN_NONE)
1.87 schwarze 1638: *pos = cp - buf;
1.149 schwarze 1639: return t;
1.1 schwarze 1640: }
1641:
1.138 schwarze 1642: /* --- handling of request blocks ----------------------------------------- */
1643:
1.1 schwarze 1644: static enum rofferr
1.2 schwarze 1645: roff_cblock(ROFF_ARGS)
1.1 schwarze 1646: {
1647:
1.2 schwarze 1648: /*
1649: * A block-close `..' should only be invoked as a child of an
1650: * ignore macro, otherwise raise a warning and just ignore it.
1651: */
1652:
1.110 schwarze 1653: if (r->last == NULL) {
1.94 schwarze 1654: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1655: ln, ppos, "..");
1.149 schwarze 1656: return ROFF_IGN;
1.2 schwarze 1657: }
1.1 schwarze 1658:
1.2 schwarze 1659: switch (r->last->tok) {
1.80 schwarze 1660: case ROFF_am:
1.93 schwarze 1661: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1662: case ROFF_ami:
1663: case ROFF_de:
1.23 schwarze 1664: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1665: case ROFF_dei:
1666: case ROFF_ig:
1.2 schwarze 1667: break;
1668: default:
1.94 schwarze 1669: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1670: ln, ppos, "..");
1.149 schwarze 1671: return ROFF_IGN;
1.2 schwarze 1672: }
1673:
1.110 schwarze 1674: if (buf->buf[pos] != '\0')
1.90 schwarze 1675: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1676: ".. %s", buf->buf + pos);
1.2 schwarze 1677:
1678: roffnode_pop(r);
1679: roffnode_cleanscope(r);
1.149 schwarze 1680: return ROFF_IGN;
1.2 schwarze 1681:
1682: }
1.1 schwarze 1683:
1.2 schwarze 1684: static void
1685: roffnode_cleanscope(struct roff *r)
1686: {
1.1 schwarze 1687:
1.2 schwarze 1688: while (r->last) {
1.46 schwarze 1689: if (--r->last->endspan != 0)
1.2 schwarze 1690: break;
1691: roffnode_pop(r);
1692: }
1693: }
1.1 schwarze 1694:
1.68 schwarze 1695: static void
1696: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1697: {
1.1 schwarze 1698:
1.2 schwarze 1699: if (NULL == r->last) {
1.94 schwarze 1700: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1701: ln, ppos, "\\}");
1.68 schwarze 1702: return;
1.2 schwarze 1703: }
1.1 schwarze 1704:
1.2 schwarze 1705: switch (r->last->tok) {
1.80 schwarze 1706: case ROFF_el:
1707: case ROFF_ie:
1708: case ROFF_if:
1.2 schwarze 1709: break;
1710: default:
1.94 schwarze 1711: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1712: ln, ppos, "\\}");
1.68 schwarze 1713: return;
1.2 schwarze 1714: }
1.1 schwarze 1715:
1.2 schwarze 1716: if (r->last->endspan > -1) {
1.94 schwarze 1717: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1718: ln, ppos, "\\}");
1.68 schwarze 1719: return;
1.2 schwarze 1720: }
1721:
1722: roffnode_pop(r);
1723: roffnode_cleanscope(r);
1.68 schwarze 1724: return;
1.1 schwarze 1725: }
1726:
1727: static enum rofferr
1.2 schwarze 1728: roff_block(ROFF_ARGS)
1.1 schwarze 1729: {
1.187 schwarze 1730: const char *name, *value;
1731: char *call, *cp, *iname, *rname;
1732: size_t csz, namesz, rsz;
1733: int deftype;
1.16 schwarze 1734:
1.93 schwarze 1735: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1736:
1.110 schwarze 1737: if (tok == ROFF_de1)
1.93 schwarze 1738: tok = ROFF_de;
1.123 schwarze 1739: else if (tok == ROFF_dei1)
1740: tok = ROFF_dei;
1.110 schwarze 1741: else if (tok == ROFF_am1)
1.93 schwarze 1742: tok = ROFF_am;
1.123 schwarze 1743: else if (tok == ROFF_ami1)
1744: tok = ROFF_ami;
1.93 schwarze 1745:
1746: /* Parse the macro name argument. */
1747:
1.110 schwarze 1748: cp = buf->buf + pos;
1749: if (tok == ROFF_ig) {
1.93 schwarze 1750: iname = NULL;
1751: namesz = 0;
1752: } else {
1753: iname = cp;
1754: namesz = roff_getname(r, &cp, ln, ppos);
1755: iname[namesz] = '\0';
1756: }
1.22 schwarze 1757:
1.93 schwarze 1758: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1759:
1.110 schwarze 1760: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1761: deftype = ROFFDEF_USER;
1762: name = roff_getstrn(r, iname, namesz, &deftype);
1763: if (name == NULL) {
1.93 schwarze 1764: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1765: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1766: "%.*s", (int)namesz, iname);
1767: namesz = 0;
1768: } else
1769: namesz = strlen(name);
1770: } else
1771: name = iname;
1.22 schwarze 1772:
1.110 schwarze 1773: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1774: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1775: ln, ppos, roff_name[tok]);
1.149 schwarze 1776: return ROFF_IGN;
1.93 schwarze 1777: }
1.2 schwarze 1778:
1.16 schwarze 1779: roffnode_push(r, tok, name, ln, ppos);
1780:
1781: /*
1782: * At the beginning of a `de' macro, clear the existing string
1783: * with the same name, if there is one. New content will be
1.66 schwarze 1784: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1785: */
1.22 schwarze 1786:
1.183 schwarze 1787: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 1788: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 1789: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 1790: } else if (tok == ROFF_am || tok == ROFF_ami) {
1791: deftype = ROFFDEF_ANY;
1792: value = roff_getstrn(r, iname, namesz, &deftype);
1793: switch (deftype) { /* Before appending, ... */
1794: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1795: roff_setstrn(&r->strtab, name, namesz,
1796: value, strlen(value), 0);
1797: break;
1798: case ROFFDEF_REN: /* call original standard macro. */
1799: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1800: (int)strlen(value), value);
1801: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1802: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1803: free(call);
1804: break;
1805: case ROFFDEF_STD: /* rename and call standard macro. */
1806: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1807: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1808: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1809: (int)rsz, rname);
1810: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1811: free(call);
1812: free(rname);
1813: break;
1814: default:
1815: break;
1816: }
1.183 schwarze 1817: }
1.2 schwarze 1818:
1.110 schwarze 1819: if (*cp == '\0')
1.149 schwarze 1820: return ROFF_IGN;
1.1 schwarze 1821:
1.93 schwarze 1822: /* Get the custom end marker. */
1.22 schwarze 1823:
1.93 schwarze 1824: iname = cp;
1.86 schwarze 1825: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1826:
1827: /* Resolve the end marker if it is indirect. */
1828:
1.110 schwarze 1829: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1830: deftype = ROFFDEF_USER;
1831: name = roff_getstrn(r, iname, namesz, &deftype);
1832: if (name == NULL) {
1.93 schwarze 1833: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1834: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1835: "%.*s", (int)namesz, iname);
1836: namesz = 0;
1837: } else
1838: namesz = strlen(name);
1839: } else
1840: name = iname;
1841:
1.86 schwarze 1842: if (namesz)
1843: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1844:
1.110 schwarze 1845: if (*cp != '\0')
1.90 schwarze 1846: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 1847: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 1848:
1.149 schwarze 1849: return ROFF_IGN;
1.1 schwarze 1850: }
1851:
1852: static enum rofferr
1.2 schwarze 1853: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1854: {
1.166 schwarze 1855: enum roff_tok t;
1.2 schwarze 1856: int i, j;
1857:
1858: /*
1859: * First check whether a custom macro exists at this level. If
1860: * it does, then check against it. This is some of groff's
1861: * stranger behaviours. If we encountered a custom end-scope
1862: * tag and that tag also happens to be a "real" macro, then we
1863: * need to try interpreting it again as a real macro. If it's
1864: * not, then return ignore. Else continue.
1865: */
1866:
1867: if (r->last->end) {
1.35 schwarze 1868: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1869: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1870: break;
1.1 schwarze 1871:
1.110 schwarze 1872: if (r->last->end[j] == '\0' &&
1873: (buf->buf[i] == '\0' ||
1874: buf->buf[i] == ' ' ||
1875: buf->buf[i] == '\t')) {
1.2 schwarze 1876: roffnode_pop(r);
1877: roffnode_cleanscope(r);
1.1 schwarze 1878:
1.110 schwarze 1879: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1880: i++;
1881:
1882: pos = i;
1.110 schwarze 1883: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 1884: TOKEN_NONE)
1.149 schwarze 1885: return ROFF_RERUN;
1886: return ROFF_IGN;
1.2 schwarze 1887: }
1.1 schwarze 1888: }
1889:
1.2 schwarze 1890: /*
1891: * If we have no custom end-query or lookup failed, then try
1892: * pulling it out of the hashtable.
1893: */
1.1 schwarze 1894:
1.110 schwarze 1895: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1896:
1.110 schwarze 1897: if (t != ROFF_cblock) {
1898: if (tok != ROFF_ig)
1899: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1900: return ROFF_IGN;
1.16 schwarze 1901: }
1.1 schwarze 1902:
1.149 schwarze 1903: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1904: }
1905:
1906: static enum rofferr
1907: roff_block_text(ROFF_ARGS)
1908: {
1909:
1.110 schwarze 1910: if (tok != ROFF_ig)
1911: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1912:
1.149 schwarze 1913: return ROFF_IGN;
1.2 schwarze 1914: }
1915:
1916: static enum rofferr
1917: roff_cond_sub(ROFF_ARGS)
1918: {
1.166 schwarze 1919: enum roff_tok t;
1.37 schwarze 1920: char *ep;
1.71 schwarze 1921: int rr;
1.2 schwarze 1922:
1923: rr = r->last->rule;
1.37 schwarze 1924: roffnode_cleanscope(r);
1.39 schwarze 1925:
1.69 schwarze 1926: /*
1927: * If `\}' occurs on a macro line without a preceding macro,
1928: * drop the line completely.
1929: */
1930:
1.110 schwarze 1931: ep = buf->buf + pos;
1932: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1933: rr = 0;
1.69 schwarze 1934:
1.50 schwarze 1935: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1936:
1.110 schwarze 1937: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 1938: switch (ep[1]) {
1939: case '}':
1940: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1941: roff_ccond(r, ln, ep - buf->buf);
1942: break;
1943: case '\0':
1944: ++ep;
1945: break;
1946: default:
1947: ep += 2;
1948: break;
1.70 schwarze 1949: }
1.50 schwarze 1950: }
1.190 schwarze 1951:
1952: /*
1953: * Fully handle known macros when they are structurally
1954: * required or when the conditional evaluated to true.
1955: */
1956:
1957: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1958: return t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT)
1959: ? (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) : rr
1960: ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1961: }
1962:
1963: static enum rofferr
1964: roff_cond_text(ROFF_ARGS)
1965: {
1.37 schwarze 1966: char *ep;
1.71 schwarze 1967: int rr;
1.2 schwarze 1968:
1969: rr = r->last->rule;
1.37 schwarze 1970: roffnode_cleanscope(r);
1.1 schwarze 1971:
1.110 schwarze 1972: ep = buf->buf + pos;
1973: while ((ep = strchr(ep, '\\')) != NULL) {
1974: if (*(++ep) == '}') {
1.70 schwarze 1975: *ep = '&';
1.110 schwarze 1976: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1977: }
1.119 schwarze 1978: if (*ep != '\0')
1979: ++ep;
1.2 schwarze 1980: }
1.149 schwarze 1981: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1982: }
1983:
1.138 schwarze 1984: /* --- handling of numeric and conditional expressions -------------------- */
1985:
1.77 schwarze 1986: /*
1987: * Parse a single signed integer number. Stop at the first non-digit.
1988: * If there is at least one digit, return success and advance the
1989: * parse point, else return failure and let the parse point unchanged.
1990: * Ignore overflows, treat them just like the C language.
1991: */
1.56 schwarze 1992: static int
1.133 schwarze 1993: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 1994: {
1.133 schwarze 1995: int myres, scaled, n, p;
1.79 schwarze 1996:
1997: if (NULL == res)
1998: res = &myres;
1.56 schwarze 1999:
2000: p = *pos;
2001: n = v[p] == '-';
1.133 schwarze 2002: if (n || v[p] == '+')
1.56 schwarze 2003: p++;
2004:
1.133 schwarze 2005: if (flags & ROFFNUM_WHITE)
2006: while (isspace((unsigned char)v[p]))
2007: p++;
2008:
1.56 schwarze 2009: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2010: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2011: if (p == *pos + n)
2012: return 0;
2013:
2014: if (n)
2015: *res = -*res;
2016:
1.126 schwarze 2017: /* Each number may be followed by one optional scaling unit. */
2018:
2019: switch (v[p]) {
2020: case 'f':
1.133 schwarze 2021: scaled = *res * 65536;
1.126 schwarze 2022: break;
2023: case 'i':
1.133 schwarze 2024: scaled = *res * 240;
1.126 schwarze 2025: break;
2026: case 'c':
1.133 schwarze 2027: scaled = *res * 240 / 2.54;
1.126 schwarze 2028: break;
2029: case 'v':
2030: case 'P':
1.133 schwarze 2031: scaled = *res * 40;
1.126 schwarze 2032: break;
2033: case 'm':
2034: case 'n':
1.133 schwarze 2035: scaled = *res * 24;
1.126 schwarze 2036: break;
2037: case 'p':
1.133 schwarze 2038: scaled = *res * 10 / 3;
1.126 schwarze 2039: break;
2040: case 'u':
1.133 schwarze 2041: scaled = *res;
1.126 schwarze 2042: break;
2043: case 'M':
1.133 schwarze 2044: scaled = *res * 6 / 25;
1.126 schwarze 2045: break;
2046: default:
1.133 schwarze 2047: scaled = *res;
1.126 schwarze 2048: p--;
2049: break;
2050: }
1.133 schwarze 2051: if (flags & ROFFNUM_SCALE)
2052: *res = scaled;
1.126 schwarze 2053:
2054: *pos = p + 1;
1.149 schwarze 2055: return 1;
1.56 schwarze 2056: }
2057:
1.71 schwarze 2058: /*
2059: * Evaluate a string comparison condition.
2060: * The first character is the delimiter.
2061: * Succeed if the string up to its second occurrence
2062: * matches the string up to its third occurence.
2063: * Advance the cursor after the third occurrence
2064: * or lacking that, to the end of the line.
2065: */
2066: static int
2067: roff_evalstrcond(const char *v, int *pos)
2068: {
2069: const char *s1, *s2, *s3;
2070: int match;
2071:
2072: match = 0;
2073: s1 = v + *pos; /* initial delimiter */
2074: s2 = s1 + 1; /* for scanning the first string */
2075: s3 = strchr(s2, *s1); /* for scanning the second string */
2076:
2077: if (NULL == s3) /* found no middle delimiter */
2078: goto out;
2079:
2080: while ('\0' != *++s3) {
2081: if (*s2 != *s3) { /* mismatch */
2082: s3 = strchr(s3, *s1);
2083: break;
2084: }
2085: if (*s3 == *s1) { /* found the final delimiter */
2086: match = 1;
2087: break;
2088: }
2089: s2++;
2090: }
2091:
2092: out:
2093: if (NULL == s3)
2094: s3 = strchr(s2, '\0');
1.114 schwarze 2095: else if (*s3 != '\0')
1.71 schwarze 2096: s3++;
2097: *pos = s3 - v;
1.149 schwarze 2098: return match;
1.71 schwarze 2099: }
2100:
1.77 schwarze 2101: /*
2102: * Evaluate an optionally negated single character, numerical,
2103: * or string condition.
2104: */
1.71 schwarze 2105: static int
1.143 schwarze 2106: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2107: {
1.143 schwarze 2108: char *cp, *name;
2109: size_t sz;
1.187 schwarze 2110: int deftype, number, savepos, istrue, wanttrue;
1.5 schwarze 2111:
1.71 schwarze 2112: if ('!' == v[*pos]) {
2113: wanttrue = 0;
2114: (*pos)++;
2115: } else
2116: wanttrue = 1;
2117:
1.5 schwarze 2118: switch (v[*pos]) {
1.112 schwarze 2119: case '\0':
1.149 schwarze 2120: return 0;
1.80 schwarze 2121: case 'n':
2122: case 'o':
1.5 schwarze 2123: (*pos)++;
1.149 schwarze 2124: return wanttrue;
1.80 schwarze 2125: case 'c':
2126: case 'e':
2127: case 't':
1.111 schwarze 2128: case 'v':
1.5 schwarze 2129: (*pos)++;
1.149 schwarze 2130: return !wanttrue;
1.182 schwarze 2131: case 'd':
1.143 schwarze 2132: case 'r':
1.182 schwarze 2133: cp = v + *pos + 1;
2134: while (*cp == ' ')
2135: cp++;
2136: name = cp;
2137: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2138: if (sz == 0)
2139: istrue = 0;
2140: else if (v[*pos] == 'r')
2141: istrue = roff_hasregn(r, name, sz);
2142: else {
2143: deftype = ROFFDEF_ANY;
2144: roff_getstrn(r, name, sz, &deftype);
2145: istrue = !!deftype;
2146: }
1.143 schwarze 2147: *pos = cp - v;
1.182 schwarze 2148: return istrue == wanttrue;
1.5 schwarze 2149: default:
2150: break;
2151: }
2152:
1.113 schwarze 2153: savepos = *pos;
1.133 schwarze 2154: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2155: return (number > 0) == wanttrue;
1.113 schwarze 2156: else if (*pos == savepos)
1.149 schwarze 2157: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2158: else
1.149 schwarze 2159: return 0;
1.5 schwarze 2160: }
2161:
1.2 schwarze 2162: static enum rofferr
1.21 schwarze 2163: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2164: {
1.30 schwarze 2165:
1.149 schwarze 2166: return ROFF_IGN;
1.21 schwarze 2167: }
2168:
2169: static enum rofferr
1.123 schwarze 2170: roff_insec(ROFF_ARGS)
2171: {
2172:
2173: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2174: ln, ppos, roff_name[tok]);
1.149 schwarze 2175: return ROFF_IGN;
1.123 schwarze 2176: }
2177:
2178: static enum rofferr
2179: roff_unsupp(ROFF_ARGS)
2180: {
2181:
2182: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2183: ln, ppos, roff_name[tok]);
1.149 schwarze 2184: return ROFF_IGN;
1.123 schwarze 2185: }
2186:
2187: static enum rofferr
1.2 schwarze 2188: roff_cond(ROFF_ARGS)
2189: {
1.46 schwarze 2190:
2191: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2192:
1.80 schwarze 2193: /*
1.35 schwarze 2194: * An `.el' has no conditional body: it will consume the value
2195: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2196: * defaults to DENY.
1.35 schwarze 2197: *
2198: * If we're not an `el', however, then evaluate the conditional.
2199: */
1.1 schwarze 2200:
1.110 schwarze 2201: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2202: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2203: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2204:
1.35 schwarze 2205: /*
2206: * An if-else will put the NEGATION of the current evaluated
2207: * conditional into the stack of rules.
2208: */
2209:
1.110 schwarze 2210: if (tok == ROFF_ie) {
1.96 schwarze 2211: if (r->rstackpos + 1 == r->rstacksz) {
2212: r->rstacksz += 16;
2213: r->rstack = mandoc_reallocarray(r->rstack,
2214: r->rstacksz, sizeof(int));
1.35 schwarze 2215: }
1.71 schwarze 2216: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2217: }
1.5 schwarze 2218:
2219: /* If the parent has false as its rule, then so do we. */
2220:
1.71 schwarze 2221: if (r->last->parent && !r->last->parent->rule)
2222: r->last->rule = 0;
1.5 schwarze 2223:
2224: /*
1.46 schwarze 2225: * Determine scope.
2226: * If there is nothing on the line after the conditional,
2227: * not even whitespace, use next-line scope.
1.5 schwarze 2228: */
1.2 schwarze 2229:
1.110 schwarze 2230: if (buf->buf[pos] == '\0') {
1.46 schwarze 2231: r->last->endspan = 2;
2232: goto out;
2233: }
2234:
1.110 schwarze 2235: while (buf->buf[pos] == ' ')
1.46 schwarze 2236: pos++;
2237:
2238: /* An opening brace requests multiline scope. */
1.2 schwarze 2239:
1.110 schwarze 2240: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2241: r->last->endspan = -1;
2242: pos += 2;
1.144 schwarze 2243: while (buf->buf[pos] == ' ')
2244: pos++;
1.46 schwarze 2245: goto out;
1.80 schwarze 2246: }
1.2 schwarze 2247:
2248: /*
1.46 schwarze 2249: * Anything else following the conditional causes
2250: * single-line scope. Warn if the scope contains
2251: * nothing but trailing whitespace.
1.2 schwarze 2252: */
2253:
1.110 schwarze 2254: if (buf->buf[pos] == '\0')
1.89 schwarze 2255: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2256: ln, ppos, roff_name[tok]);
1.2 schwarze 2257:
1.46 schwarze 2258: r->last->endspan = 1;
1.1 schwarze 2259:
1.46 schwarze 2260: out:
1.2 schwarze 2261: *offs = pos;
1.149 schwarze 2262: return ROFF_RERUN;
1.1 schwarze 2263: }
2264:
1.2 schwarze 2265: static enum rofferr
1.7 schwarze 2266: roff_ds(ROFF_ARGS)
2267: {
1.85 schwarze 2268: char *string;
2269: const char *name;
2270: size_t namesz;
1.10 schwarze 2271:
1.123 schwarze 2272: /* Ignore groff compatibility mode for now. */
2273:
2274: if (tok == ROFF_ds1)
2275: tok = ROFF_ds;
2276: else if (tok == ROFF_as1)
2277: tok = ROFF_as;
2278:
1.10 schwarze 2279: /*
1.85 schwarze 2280: * The first word is the name of the string.
2281: * If it is empty or terminated by an escape sequence,
2282: * abort the `ds' request without defining anything.
1.10 schwarze 2283: */
1.7 schwarze 2284:
1.110 schwarze 2285: name = string = buf->buf + pos;
2286: if (*name == '\0')
1.149 schwarze 2287: return ROFF_IGN;
1.7 schwarze 2288:
1.85 schwarze 2289: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2290: if (name[namesz] == '\\')
1.149 schwarze 2291: return ROFF_IGN;
1.85 schwarze 2292:
2293: /* Read past the initial double-quote, if any. */
1.110 schwarze 2294: if (*string == '"')
1.7 schwarze 2295: string++;
2296:
1.10 schwarze 2297: /* The rest is the value. */
1.85 schwarze 2298: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2299: ROFF_as == tok);
1.183 schwarze 2300: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2301: return ROFF_IGN;
1.7 schwarze 2302: }
2303:
1.77 schwarze 2304: /*
2305: * Parse a single operator, one or two characters long.
2306: * If the operator is recognized, return success and advance the
2307: * parse point, else return failure and let the parse point unchanged.
2308: */
2309: static int
2310: roff_getop(const char *v, int *pos, char *res)
2311: {
2312:
2313: *res = v[*pos];
2314:
2315: switch (*res) {
1.80 schwarze 2316: case '+':
2317: case '-':
2318: case '*':
2319: case '/':
2320: case '%':
2321: case '&':
2322: case ':':
1.77 schwarze 2323: break;
2324: case '<':
2325: switch (v[*pos + 1]) {
1.80 schwarze 2326: case '=':
1.77 schwarze 2327: *res = 'l';
2328: (*pos)++;
2329: break;
1.80 schwarze 2330: case '>':
1.77 schwarze 2331: *res = '!';
2332: (*pos)++;
2333: break;
1.80 schwarze 2334: case '?':
1.77 schwarze 2335: *res = 'i';
2336: (*pos)++;
2337: break;
2338: default:
2339: break;
2340: }
2341: break;
2342: case '>':
2343: switch (v[*pos + 1]) {
1.80 schwarze 2344: case '=':
1.77 schwarze 2345: *res = 'g';
2346: (*pos)++;
2347: break;
1.80 schwarze 2348: case '?':
1.77 schwarze 2349: *res = 'a';
2350: (*pos)++;
2351: break;
2352: default:
2353: break;
2354: }
2355: break;
2356: case '=':
2357: if ('=' == v[*pos + 1])
2358: (*pos)++;
2359: break;
2360: default:
1.149 schwarze 2361: return 0;
1.77 schwarze 2362: }
2363: (*pos)++;
2364:
1.149 schwarze 2365: return *res;
1.77 schwarze 2366: }
2367:
2368: /*
2369: * Evaluate either a parenthesized numeric expression
2370: * or a single signed integer number.
2371: */
2372: static int
1.106 schwarze 2373: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2374: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2375: {
2376:
2377: if ('(' != v[*pos])
1.149 schwarze 2378: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2379:
2380: (*pos)++;
1.133 schwarze 2381: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2382: return 0;
1.77 schwarze 2383:
1.79 schwarze 2384: /*
2385: * Omission of the closing parenthesis
2386: * is an error in validation mode,
2387: * but ignored in evaluation mode.
2388: */
2389:
1.77 schwarze 2390: if (')' == v[*pos])
2391: (*pos)++;
1.79 schwarze 2392: else if (NULL == res)
1.149 schwarze 2393: return 0;
1.77 schwarze 2394:
1.149 schwarze 2395: return 1;
1.77 schwarze 2396: }
2397:
2398: /*
2399: * Evaluate a complete numeric expression.
2400: * Proceed left to right, there is no concept of precedence.
2401: */
2402: static int
1.106 schwarze 2403: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2404: int *pos, int *res, int flags)
1.77 schwarze 2405: {
2406: int mypos, operand2;
2407: char operator;
2408:
2409: if (NULL == pos) {
2410: mypos = 0;
2411: pos = &mypos;
2412: }
2413:
1.133 schwarze 2414: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2415: while (isspace((unsigned char)v[*pos]))
2416: (*pos)++;
2417:
1.133 schwarze 2418: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2419: return 0;
1.77 schwarze 2420:
2421: while (1) {
1.133 schwarze 2422: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2423: while (isspace((unsigned char)v[*pos]))
2424: (*pos)++;
2425:
2426: if ( ! roff_getop(v, pos, &operator))
2427: break;
2428:
1.133 schwarze 2429: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2430: while (isspace((unsigned char)v[*pos]))
2431: (*pos)++;
2432:
1.133 schwarze 2433: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2434: return 0;
1.77 schwarze 2435:
1.133 schwarze 2436: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2437: while (isspace((unsigned char)v[*pos]))
2438: (*pos)++;
1.79 schwarze 2439:
2440: if (NULL == res)
2441: continue;
1.77 schwarze 2442:
2443: switch (operator) {
1.80 schwarze 2444: case '+':
1.77 schwarze 2445: *res += operand2;
2446: break;
1.80 schwarze 2447: case '-':
1.77 schwarze 2448: *res -= operand2;
2449: break;
1.80 schwarze 2450: case '*':
1.77 schwarze 2451: *res *= operand2;
2452: break;
1.80 schwarze 2453: case '/':
1.116 schwarze 2454: if (operand2 == 0) {
1.106 schwarze 2455: mandoc_msg(MANDOCERR_DIVZERO,
2456: r->parse, ln, *pos, v);
2457: *res = 0;
2458: break;
2459: }
1.77 schwarze 2460: *res /= operand2;
2461: break;
1.80 schwarze 2462: case '%':
1.116 schwarze 2463: if (operand2 == 0) {
2464: mandoc_msg(MANDOCERR_DIVZERO,
2465: r->parse, ln, *pos, v);
2466: *res = 0;
2467: break;
2468: }
1.77 schwarze 2469: *res %= operand2;
2470: break;
1.80 schwarze 2471: case '<':
1.77 schwarze 2472: *res = *res < operand2;
2473: break;
1.80 schwarze 2474: case '>':
1.77 schwarze 2475: *res = *res > operand2;
2476: break;
1.80 schwarze 2477: case 'l':
1.77 schwarze 2478: *res = *res <= operand2;
2479: break;
1.80 schwarze 2480: case 'g':
1.77 schwarze 2481: *res = *res >= operand2;
2482: break;
1.80 schwarze 2483: case '=':
1.77 schwarze 2484: *res = *res == operand2;
2485: break;
1.80 schwarze 2486: case '!':
1.77 schwarze 2487: *res = *res != operand2;
2488: break;
1.80 schwarze 2489: case '&':
1.77 schwarze 2490: *res = *res && operand2;
2491: break;
1.80 schwarze 2492: case ':':
1.77 schwarze 2493: *res = *res || operand2;
2494: break;
1.80 schwarze 2495: case 'i':
1.77 schwarze 2496: if (operand2 < *res)
2497: *res = operand2;
2498: break;
1.80 schwarze 2499: case 'a':
1.77 schwarze 2500: if (operand2 > *res)
2501: *res = operand2;
2502: break;
2503: default:
2504: abort();
2505: }
2506: }
1.149 schwarze 2507: return 1;
1.77 schwarze 2508: }
2509:
1.138 schwarze 2510: /* --- register management ------------------------------------------------ */
2511:
1.52 schwarze 2512: void
1.60 schwarze 2513: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2514: {
1.52 schwarze 2515: struct roffreg *reg;
2516:
2517: /* Search for an existing register with the same name. */
2518: reg = r->regtab;
2519:
2520: while (reg && strcmp(name, reg->key.p))
2521: reg = reg->next;
1.41 schwarze 2522:
1.52 schwarze 2523: if (NULL == reg) {
2524: /* Create a new register. */
2525: reg = mandoc_malloc(sizeof(struct roffreg));
2526: reg->key.p = mandoc_strdup(name);
2527: reg->key.sz = strlen(name);
1.60 schwarze 2528: reg->val = 0;
1.52 schwarze 2529: reg->next = r->regtab;
2530: r->regtab = reg;
2531: }
2532:
1.60 schwarze 2533: if ('+' == sign)
2534: reg->val += val;
2535: else if ('-' == sign)
2536: reg->val -= val;
2537: else
2538: reg->val = val;
1.41 schwarze 2539: }
2540:
1.65 schwarze 2541: /*
2542: * Handle some predefined read-only number registers.
2543: * For now, return -1 if the requested register is not predefined;
2544: * in case a predefined read-only register having the value -1
2545: * were to turn up, another special value would have to be chosen.
2546: */
2547: static int
1.145 schwarze 2548: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2549: {
2550:
2551: switch (*name) {
1.145 schwarze 2552: case '$': /* Number of arguments of the last macro evaluated. */
1.149 schwarze 2553: return r->argc;
1.80 schwarze 2554: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2555: return 0;
1.80 schwarze 2556: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2557: return 1;
1.80 schwarze 2558: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2559: return 24;
1.80 schwarze 2560: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2561: return 0;
1.80 schwarze 2562: case 'T': /* Some output device is always defined. */
1.149 schwarze 2563: return 1;
1.80 schwarze 2564: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2565: return 40;
1.65 schwarze 2566: default:
1.149 schwarze 2567: return -1;
1.65 schwarze 2568: }
2569: }
2570:
1.53 schwarze 2571: int
1.52 schwarze 2572: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2573: {
1.52 schwarze 2574: struct roffreg *reg;
1.65 schwarze 2575: int val;
2576:
2577: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.145 schwarze 2578: val = roff_getregro(r, name + 1);
1.65 schwarze 2579: if (-1 != val)
1.149 schwarze 2580: return val;
1.65 schwarze 2581: }
1.52 schwarze 2582:
2583: for (reg = r->regtab; reg; reg = reg->next)
2584: if (0 == strcmp(name, reg->key.p))
1.149 schwarze 2585: return reg->val;
1.53 schwarze 2586:
1.149 schwarze 2587: return 0;
1.53 schwarze 2588: }
2589:
2590: static int
2591: roff_getregn(const struct roff *r, const char *name, size_t len)
2592: {
2593: struct roffreg *reg;
1.65 schwarze 2594: int val;
2595:
2596: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2597: val = roff_getregro(r, name + 1);
1.65 schwarze 2598: if (-1 != val)
1.149 schwarze 2599: return val;
1.65 schwarze 2600: }
1.53 schwarze 2601:
2602: for (reg = r->regtab; reg; reg = reg->next)
2603: if (len == reg->key.sz &&
2604: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2605: return reg->val;
1.143 schwarze 2606:
1.149 schwarze 2607: return 0;
1.143 schwarze 2608: }
2609:
2610: static int
2611: roff_hasregn(const struct roff *r, const char *name, size_t len)
2612: {
2613: struct roffreg *reg;
2614: int val;
2615:
2616: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2617: val = roff_getregro(r, name + 1);
1.143 schwarze 2618: if (-1 != val)
1.149 schwarze 2619: return 1;
1.143 schwarze 2620: }
2621:
2622: for (reg = r->regtab; reg; reg = reg->next)
2623: if (len == reg->key.sz &&
2624: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2625: return 1;
1.41 schwarze 2626:
1.149 schwarze 2627: return 0;
1.41 schwarze 2628: }
2629:
1.52 schwarze 2630: static void
2631: roff_freereg(struct roffreg *reg)
1.41 schwarze 2632: {
1.52 schwarze 2633: struct roffreg *old_reg;
1.41 schwarze 2634:
1.52 schwarze 2635: while (NULL != reg) {
2636: free(reg->key.p);
2637: old_reg = reg;
2638: reg = reg->next;
2639: free(old_reg);
2640: }
1.41 schwarze 2641: }
1.7 schwarze 2642:
2643: static enum rofferr
1.6 schwarze 2644: roff_nr(ROFF_ARGS)
1.1 schwarze 2645: {
1.85 schwarze 2646: char *key, *val;
2647: size_t keysz;
1.37 schwarze 2648: int iv;
1.60 schwarze 2649: char sign;
1.6 schwarze 2650:
1.110 schwarze 2651: key = val = buf->buf + pos;
2652: if (*key == '\0')
1.149 schwarze 2653: return ROFF_IGN;
1.85 schwarze 2654:
2655: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2656: if (key[keysz] == '\\')
1.149 schwarze 2657: return ROFF_IGN;
1.85 schwarze 2658: key[keysz] = '\0';
1.6 schwarze 2659:
1.60 schwarze 2660: sign = *val;
1.110 schwarze 2661: if (sign == '+' || sign == '-')
1.60 schwarze 2662: val++;
2663:
1.133 schwarze 2664: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2665: roff_setreg(r, key, iv, sign);
1.1 schwarze 2666:
1.149 schwarze 2667: return ROFF_IGN;
1.76 schwarze 2668: }
2669:
2670: static enum rofferr
2671: roff_rr(ROFF_ARGS)
2672: {
2673: struct roffreg *reg, **prev;
1.85 schwarze 2674: char *name, *cp;
2675: size_t namesz;
1.76 schwarze 2676:
1.110 schwarze 2677: name = cp = buf->buf + pos;
2678: if (*name == '\0')
1.149 schwarze 2679: return ROFF_IGN;
1.85 schwarze 2680: namesz = roff_getname(r, &cp, ln, pos);
2681: name[namesz] = '\0';
1.76 schwarze 2682:
2683: prev = &r->regtab;
2684: while (1) {
2685: reg = *prev;
1.110 schwarze 2686: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2687: break;
2688: prev = ®->next;
2689: }
1.110 schwarze 2690: if (reg != NULL) {
1.76 schwarze 2691: *prev = reg->next;
2692: free(reg->key.p);
2693: free(reg);
2694: }
1.149 schwarze 2695: return ROFF_IGN;
1.29 schwarze 2696: }
2697:
1.138 schwarze 2698: /* --- handler functions for roff requests -------------------------------- */
2699:
1.29 schwarze 2700: static enum rofferr
2701: roff_rm(ROFF_ARGS)
2702: {
2703: const char *name;
2704: char *cp;
1.85 schwarze 2705: size_t namesz;
1.29 schwarze 2706:
1.110 schwarze 2707: cp = buf->buf + pos;
2708: while (*cp != '\0') {
1.85 schwarze 2709: name = cp;
1.110 schwarze 2710: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2711: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 2712: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 2713: if (name[namesz] == '\\')
1.85 schwarze 2714: break;
1.29 schwarze 2715: }
1.149 schwarze 2716: return ROFF_IGN;
1.51 schwarze 2717: }
2718:
2719: static enum rofferr
2720: roff_it(ROFF_ARGS)
2721: {
2722: int iv;
2723:
2724: /* Parse the number of lines. */
1.133 schwarze 2725:
2726: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2727: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2728: ln, ppos, buf->buf + 1);
1.149 schwarze 2729: return ROFF_IGN;
1.51 schwarze 2730: }
2731:
1.134 schwarze 2732: while (isspace((unsigned char)buf->buf[pos]))
2733: pos++;
2734:
2735: /*
2736: * Arm the input line trap.
2737: * Special-casing "an-trap" is an ugly workaround to cope
2738: * with DocBook stupidly fiddling with man(7) internals.
2739: */
1.133 schwarze 2740:
1.51 schwarze 2741: roffit_lines = iv;
1.134 schwarze 2742: roffit_macro = mandoc_strdup(iv != 1 ||
2743: strcmp(buf->buf + pos, "an-trap") ?
2744: buf->buf + pos : "br");
1.149 schwarze 2745: return ROFF_IGN;
1.47 schwarze 2746: }
2747:
2748: static enum rofferr
2749: roff_Dd(ROFF_ARGS)
2750: {
1.187 schwarze 2751: int mask;
2752: enum roff_tok t, te;
1.99 schwarze 2753:
1.187 schwarze 2754: switch (tok) {
2755: case ROFF_Dd:
2756: tok = MDOC_Dd;
2757: te = MDOC_MAX;
2758: if (r->format == 0)
2759: r->format = MPARSE_MDOC;
2760: mask = MPARSE_MDOC | MPARSE_QUICK;
2761: break;
2762: case ROFF_TH:
2763: tok = MAN_TH;
2764: te = MAN_MAX;
2765: if (r->format == 0)
2766: r->format = MPARSE_MAN;
2767: mask = MPARSE_QUICK;
2768: break;
2769: default:
2770: abort();
2771: }
2772: if ((r->options & mask) == 0)
2773: for (t = tok; t < te; t++)
2774: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 2775: return ROFF_CONT;
1.14 schwarze 2776: }
2777:
2778: static enum rofferr
1.27 schwarze 2779: roff_TE(ROFF_ARGS)
2780: {
1.193 schwarze 2781: if (r->tbl == NULL) {
1.94 schwarze 2782: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2783: ln, ppos, "TE");
1.193 schwarze 2784: return ROFF_IGN;
2785: }
2786: if (tbl_end(r->tbl) == 0) {
2787: r->tbl = NULL;
1.130 schwarze 2788: free(buf->buf);
2789: buf->buf = mandoc_strdup(".sp");
2790: buf->sz = 4;
1.149 schwarze 2791: return ROFF_REPARSE;
1.130 schwarze 2792: }
1.193 schwarze 2793: r->tbl = NULL;
1.149 schwarze 2794: return ROFF_IGN;
1.27 schwarze 2795: }
2796:
2797: static enum rofferr
2798: roff_T_(ROFF_ARGS)
2799: {
2800:
2801: if (NULL == r->tbl)
1.94 schwarze 2802: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2803: ln, ppos, "T&");
1.27 schwarze 2804: else
1.168 schwarze 2805: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 2806:
1.149 schwarze 2807: return ROFF_IGN;
1.27 schwarze 2808: }
2809:
1.102 schwarze 2810: /*
2811: * Handle in-line equation delimiters.
2812: */
2813: static enum rofferr
1.110 schwarze 2814: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2815: {
1.105 schwarze 2816: char *cp1, *cp2;
2817: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2818:
1.102 schwarze 2819: /*
2820: * Outside equations, look for an opening delimiter.
2821: * If we are inside an equation, we already know it is
2822: * in-line, or this function wouldn't have been called;
2823: * so look for a closing delimiter.
2824: */
2825:
1.110 schwarze 2826: cp1 = buf->buf + pos;
1.102 schwarze 2827: cp2 = strchr(cp1, r->eqn == NULL ?
2828: r->last_eqn->odelim : r->last_eqn->cdelim);
2829: if (cp2 == NULL)
1.149 schwarze 2830: return ROFF_CONT;
1.102 schwarze 2831:
1.105 schwarze 2832: *cp2++ = '\0';
2833: bef_pr = bef_nl = aft_nl = aft_pr = "";
2834:
2835: /* Handle preceding text, protecting whitespace. */
2836:
1.110 schwarze 2837: if (*buf->buf != '\0') {
1.105 schwarze 2838: if (r->eqn == NULL)
2839: bef_pr = "\\&";
2840: bef_nl = "\n";
2841: }
2842:
2843: /*
2844: * Prepare replacing the delimiter with an equation macro
2845: * and drop leading white space from the equation.
2846: */
1.102 schwarze 2847:
1.105 schwarze 2848: if (r->eqn == NULL) {
2849: while (*cp2 == ' ')
2850: cp2++;
2851: mac = ".EQ";
2852: } else
2853: mac = ".EN";
2854:
2855: /* Handle following text, protecting whitespace. */
2856:
2857: if (*cp2 != '\0') {
2858: aft_nl = "\n";
2859: if (r->eqn != NULL)
2860: aft_pr = "\\&";
2861: }
2862:
2863: /* Do the actual replacement. */
2864:
1.110 schwarze 2865: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2866: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2867: free(buf->buf);
2868: buf->buf = cp1;
1.102 schwarze 2869:
2870: /* Toggle the in-line state of the eqn subsystem. */
2871:
2872: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2873: return ROFF_REPARSE;
1.41 schwarze 2874: }
2875:
1.107 schwarze 2876: static enum rofferr
2877: roff_EQ(ROFF_ARGS)
1.32 schwarze 2878: {
1.191 schwarze 2879: struct roff_node *n;
2880:
1.194 schwarze 2881: if (r->man->macroset == MACROSET_MAN)
2882: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 2883: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
2884: if (ln > r->man->last->line)
2885: n->flags |= NODE_LINE;
2886: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
2887: n->eqn->expectargs = UINT_MAX;
2888: roff_node_append(r->man, n);
2889: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 2890:
1.110 schwarze 2891: assert(r->eqn == NULL);
1.191 schwarze 2892: if (r->last_eqn == NULL)
2893: r->last_eqn = eqn_alloc(r->parse);
2894: else
2895: eqn_reset(r->last_eqn);
2896: r->eqn = r->last_eqn;
2897: r->eqn->node = n;
1.41 schwarze 2898:
1.110 schwarze 2899: if (buf->buf[pos] != '\0')
1.107 schwarze 2900: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2901: ".EQ %s", buf->buf + pos);
1.41 schwarze 2902:
1.149 schwarze 2903: return ROFF_IGN;
1.32 schwarze 2904: }
2905:
2906: static enum rofferr
2907: roff_EN(ROFF_ARGS)
2908: {
1.191 schwarze 2909: if (r->eqn != NULL) {
2910: eqn_parse(r->eqn);
2911: r->eqn = NULL;
2912: } else
2913: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
2914: if (buf->buf[pos] != '\0')
2915: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2916: "EN %s", buf->buf + pos);
1.149 schwarze 2917: return ROFF_IGN;
1.32 schwarze 2918: }
2919:
2920: static enum rofferr
1.27 schwarze 2921: roff_TS(ROFF_ARGS)
2922: {
1.193 schwarze 2923: if (r->tbl != NULL) {
1.94 schwarze 2924: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2925: ln, ppos, "TS breaks TS");
1.193 schwarze 2926: tbl_end(r->tbl);
1.27 schwarze 2927: }
1.193 schwarze 2928: r->tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2929: if (r->last_tbl)
1.193 schwarze 2930: r->last_tbl->next = r->tbl;
1.27 schwarze 2931: else
1.193 schwarze 2932: r->first_tbl = r->tbl;
2933: r->last_tbl = r->tbl;
1.169 schwarze 2934: return ROFF_IGN;
2935: }
2936:
2937: static enum rofferr
2938: roff_onearg(ROFF_ARGS)
2939: {
2940: struct roff_node *n;
2941: char *cp;
1.177 schwarze 2942: int npos;
1.169 schwarze 2943:
1.174 schwarze 2944: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 2945: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
2946: tok == ROFF_ti))
1.174 schwarze 2947: man_breakscope(r->man, tok);
2948:
1.181 schwarze 2949: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 2950: r->man->last = roffce_node;
2951: r->man->next = ROFF_NEXT_SIBLING;
2952: }
2953:
1.169 schwarze 2954: roff_elem_alloc(r->man, ln, ppos, tok);
2955: n = r->man->last;
2956:
2957: cp = buf->buf + pos;
2958: if (*cp != '\0') {
2959: while (*cp != '\0' && *cp != ' ')
2960: cp++;
2961: while (*cp == ' ')
2962: *cp++ = '\0';
2963: if (*cp != '\0')
2964: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2965: r->parse, ln, cp - buf->buf,
2966: "%s ... %s", roff_name[tok], cp);
2967: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 2968: }
2969:
1.181 schwarze 2970: if (tok == ROFF_ce || tok == ROFF_rj) {
2971: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 2972: roff_word_alloc(r->man, ln, pos, "1");
2973: r->man->last->flags |= NODE_NOSRC;
2974: }
2975: npos = 0;
2976: if (roff_evalnum(r, ln, r->man->last->string, &npos,
2977: &roffce_lines, 0) == 0) {
2978: mandoc_vmsg(MANDOCERR_CE_NONUM,
2979: r->parse, ln, pos, "ce %s", buf->buf + pos);
2980: roffce_lines = 1;
2981: }
2982: if (roffce_lines < 1) {
2983: r->man->last = r->man->last->parent;
2984: roffce_node = NULL;
2985: roffce_lines = 0;
2986: } else
2987: roffce_node = r->man->last->parent;
2988: } else {
2989: n->flags |= NODE_VALID | NODE_ENDED;
2990: r->man->last = n;
2991: }
2992: n->flags |= NODE_LINE;
1.172 schwarze 2993: r->man->next = ROFF_NEXT_SIBLING;
2994: return ROFF_IGN;
2995: }
2996:
2997: static enum rofferr
2998: roff_manyarg(ROFF_ARGS)
2999: {
3000: struct roff_node *n;
3001: char *sp, *ep;
3002:
3003: roff_elem_alloc(r->man, ln, ppos, tok);
3004: n = r->man->last;
3005:
3006: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3007: while (*ep != '\0' && *ep != ' ')
3008: ep++;
3009: while (*ep == ' ')
3010: *ep++ = '\0';
3011: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3012: }
3013:
3014: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3015: r->man->last = n;
3016: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3017: return ROFF_IGN;
1.123 schwarze 3018: }
3019:
3020: static enum rofferr
1.183 schwarze 3021: roff_als(ROFF_ARGS)
3022: {
3023: char *oldn, *newn, *end, *value;
3024: size_t oldsz, newsz, valsz;
3025:
3026: newn = oldn = buf->buf + pos;
3027: if (*newn == '\0')
3028: return ROFF_IGN;
3029:
3030: newsz = roff_getname(r, &oldn, ln, pos);
3031: if (newn[newsz] == '\\' || *oldn == '\0')
3032: return ROFF_IGN;
3033:
3034: end = oldn;
3035: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3036: if (oldsz == 0)
3037: return ROFF_IGN;
3038:
1.187 schwarze 3039: valsz = mandoc_asprintf(&value, ".%.*s \\$*\\\"\n",
3040: (int)oldsz, oldn);
1.183 schwarze 3041: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3042: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3043: free(value);
3044: return ROFF_IGN;
3045: }
3046:
3047: static enum rofferr
1.168 schwarze 3048: roff_br(ROFF_ARGS)
1.123 schwarze 3049: {
1.174 schwarze 3050: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3051: man_breakscope(r->man, ROFF_br);
1.168 schwarze 3052: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3053: if (buf->buf[pos] != '\0')
3054: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3055: "%s %s", roff_name[tok], buf->buf + pos);
3056: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3057: r->man->next = ROFF_NEXT_SIBLING;
3058: return ROFF_IGN;
1.27 schwarze 3059: }
3060:
3061: static enum rofferr
1.48 schwarze 3062: roff_cc(ROFF_ARGS)
3063: {
3064: const char *p;
3065:
1.110 schwarze 3066: p = buf->buf + pos;
1.48 schwarze 3067:
1.110 schwarze 3068: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3069: r->control = '\0';
1.48 schwarze 3070:
1.110 schwarze 3071: if (*p != '\0')
1.132 schwarze 3072: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3073: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3074:
1.149 schwarze 3075: return ROFF_IGN;
1.48 schwarze 3076: }
3077:
3078: static enum rofferr
1.175 schwarze 3079: roff_ec(ROFF_ARGS)
3080: {
3081: const char *p;
3082:
3083: p = buf->buf + pos;
3084: if (*p == '\0')
3085: r->escape = '\\';
3086: else {
3087: r->escape = *p;
3088: if (*++p != '\0')
3089: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3090: ln, p - buf->buf, "ec ... %s", p);
3091: }
3092: return ROFF_IGN;
3093: }
3094:
3095: static enum rofferr
3096: roff_eo(ROFF_ARGS)
3097: {
3098: r->escape = '\0';
3099: if (buf->buf[pos] != '\0')
3100: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3101: ln, pos, "eo %s", buf->buf + pos);
3102: return ROFF_IGN;
3103: }
3104:
3105: static enum rofferr
1.42 schwarze 3106: roff_tr(ROFF_ARGS)
3107: {
3108: const char *p, *first, *second;
3109: size_t fsz, ssz;
3110: enum mandoc_esc esc;
3111:
1.110 schwarze 3112: p = buf->buf + pos;
1.42 schwarze 3113:
1.110 schwarze 3114: if (*p == '\0') {
1.132 schwarze 3115: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 3116: return ROFF_IGN;
1.42 schwarze 3117: }
3118:
1.110 schwarze 3119: while (*p != '\0') {
1.42 schwarze 3120: fsz = ssz = 1;
3121:
3122: first = p++;
1.110 schwarze 3123: if (*first == '\\') {
1.42 schwarze 3124: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3125: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3126: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3127: ln, (int)(p - buf->buf), first);
1.149 schwarze 3128: return ROFF_IGN;
1.42 schwarze 3129: }
3130: fsz = (size_t)(p - first);
3131: }
3132:
3133: second = p++;
1.110 schwarze 3134: if (*second == '\\') {
1.42 schwarze 3135: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3136: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3137: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3138: ln, (int)(p - buf->buf), second);
1.149 schwarze 3139: return ROFF_IGN;
1.42 schwarze 3140: }
3141: ssz = (size_t)(p - second);
1.110 schwarze 3142: } else if (*second == '\0') {
1.132 schwarze 3143: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3144: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3145: second = " ";
3146: p--;
3147: }
3148:
3149: if (fsz > 1) {
1.80 schwarze 3150: roff_setstrn(&r->xmbtab, first, fsz,
3151: second, ssz, 0);
1.42 schwarze 3152: continue;
3153: }
3154:
1.110 schwarze 3155: if (r->xtab == NULL)
1.80 schwarze 3156: r->xtab = mandoc_calloc(128,
3157: sizeof(struct roffstr));
1.42 schwarze 3158:
3159: free(r->xtab[(int)*first].p);
3160: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3161: r->xtab[(int)*first].sz = ssz;
3162: }
3163:
1.149 schwarze 3164: return ROFF_IGN;
1.42 schwarze 3165: }
3166:
3167: static enum rofferr
1.178 schwarze 3168: roff_rn(ROFF_ARGS)
3169: {
3170: const char *value;
3171: char *oldn, *newn, *end;
3172: size_t oldsz, newsz;
1.187 schwarze 3173: int deftype;
1.178 schwarze 3174:
3175: oldn = newn = buf->buf + pos;
3176: if (*oldn == '\0')
3177: return ROFF_IGN;
3178:
3179: oldsz = roff_getname(r, &newn, ln, pos);
3180: if (oldn[oldsz] == '\\' || *newn == '\0')
3181: return ROFF_IGN;
3182:
3183: end = newn;
3184: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3185: if (newsz == 0)
3186: return ROFF_IGN;
3187:
1.187 schwarze 3188: deftype = ROFFDEF_ANY;
3189: value = roff_getstrn(r, oldn, oldsz, &deftype);
3190: switch (deftype) {
3191: case ROFFDEF_USER:
1.178 schwarze 3192: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3193: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3194: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3195: break;
3196: case ROFFDEF_PRE:
3197: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3198: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3199: break;
3200: case ROFFDEF_REN:
1.178 schwarze 3201: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3202: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3203: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3204: break;
3205: case ROFFDEF_STD:
1.178 schwarze 3206: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3207: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3208: break;
3209: default:
3210: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3211: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3212: break;
3213: }
1.178 schwarze 3214: return ROFF_IGN;
3215: }
3216:
3217: static enum rofferr
1.14 schwarze 3218: roff_so(ROFF_ARGS)
3219: {
1.121 schwarze 3220: char *name, *cp;
1.15 schwarze 3221:
1.110 schwarze 3222: name = buf->buf + pos;
1.97 schwarze 3223: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3224:
1.22 schwarze 3225: /*
3226: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3227: * opening anything that's not in our cwd or anything beneath
3228: * it. Thus, explicitly disallow traversing up the file-system
3229: * or using absolute paths.
3230: */
3231:
1.110 schwarze 3232: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3233: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3234: ".so %s", name);
1.121 schwarze 3235: buf->sz = mandoc_asprintf(&cp,
3236: ".sp\nSee the file %s.\n.sp", name) + 1;
3237: free(buf->buf);
3238: buf->buf = cp;
3239: *offs = 0;
1.149 schwarze 3240: return ROFF_REPARSE;
1.14 schwarze 3241: }
3242:
3243: *offs = pos;
1.149 schwarze 3244: return ROFF_SO;
1.7 schwarze 3245: }
3246:
1.138 schwarze 3247: /* --- user defined strings and macros ------------------------------------ */
3248:
1.16 schwarze 3249: static enum rofferr
3250: roff_userdef(ROFF_ARGS)
1.12 schwarze 3251: {
1.183 schwarze 3252: const char *arg[16], *ap;
1.16 schwarze 3253: char *cp, *n1, *n2;
1.164 schwarze 3254: int expand_count, i, ib, ie;
1.135 schwarze 3255: size_t asz, rsz;
1.12 schwarze 3256:
1.16 schwarze 3257: /*
3258: * Collect pointers to macro argument strings
1.61 schwarze 3259: * and NUL-terminate them.
1.16 schwarze 3260: */
1.135 schwarze 3261:
1.145 schwarze 3262: r->argc = 0;
1.110 schwarze 3263: cp = buf->buf + pos;
1.183 schwarze 3264: for (i = 0; i < 16; i++) {
1.145 schwarze 3265: if (*cp == '\0')
3266: arg[i] = "";
3267: else {
3268: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3269: r->argc = i + 1;
3270: }
3271: }
1.16 schwarze 3272:
3273: /*
3274: * Expand macro arguments.
1.12 schwarze 3275: */
1.135 schwarze 3276:
3277: buf->sz = strlen(r->current_string) + 1;
1.164 schwarze 3278: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.135 schwarze 3279: memcpy(n1, r->current_string, buf->sz);
1.164 schwarze 3280: expand_count = 0;
1.135 schwarze 3281: while (*cp != '\0') {
3282:
3283: /* Scan ahead for the next argument invocation. */
3284:
3285: if (*cp++ != '\\')
3286: continue;
3287: if (*cp++ != '$')
3288: continue;
1.146 schwarze 3289: if (*cp == '*') { /* \\$* inserts all arguments */
3290: ib = 0;
3291: ie = r->argc - 1;
3292: } else { /* \\$1 .. \\$9 insert one argument */
3293: ib = ie = *cp - '1';
3294: if (ib < 0 || ib > 8)
3295: continue;
3296: }
1.135 schwarze 3297: cp -= 2;
1.164 schwarze 3298:
3299: /*
3300: * Prevent infinite recursion.
3301: */
3302:
3303: if (cp >= n2)
3304: expand_count = 1;
3305: else if (++expand_count > EXPAND_LIMIT) {
3306: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3307: ln, (int)(cp - n1), NULL);
1.165 schwarze 3308: free(buf->buf);
3309: buf->buf = n1;
1.164 schwarze 3310: return ROFF_IGN;
3311: }
1.135 schwarze 3312:
3313: /*
3314: * Determine the size of the expanded argument,
3315: * taking escaping of quotes into account.
3316: */
3317:
1.146 schwarze 3318: asz = ie > ib ? ie - ib : 0; /* for blanks */
3319: for (i = ib; i <= ie; i++) {
3320: for (ap = arg[i]; *ap != '\0'; ap++) {
3321: asz++;
3322: if (*ap == '"')
3323: asz += 3;
3324: }
1.135 schwarze 3325: }
3326: if (asz != 3) {
3327:
3328: /*
3329: * Determine the size of the rest of the
3330: * unexpanded macro, including the NUL.
3331: */
3332:
3333: rsz = buf->sz - (cp - n1) - 3;
3334:
3335: /*
3336: * When shrinking, move before
3337: * releasing the storage.
3338: */
3339:
3340: if (asz < 3)
3341: memmove(cp + asz, cp + 3, rsz);
3342:
3343: /*
3344: * Resize the storage for the macro
3345: * and readjust the parse pointer.
3346: */
3347:
3348: buf->sz += asz - 3;
3349: n2 = mandoc_realloc(n1, buf->sz);
3350: cp = n2 + (cp - n1);
3351: n1 = n2;
3352:
3353: /*
3354: * When growing, make room
3355: * for the expanded argument.
3356: */
3357:
3358: if (asz > 3)
3359: memmove(cp + asz, cp + 3, rsz);
3360: }
3361:
3362: /* Copy the expanded argument, escaping quotes. */
3363:
3364: n2 = cp;
1.146 schwarze 3365: for (i = ib; i <= ie; i++) {
3366: for (ap = arg[i]; *ap != '\0'; ap++) {
3367: if (*ap == '"') {
3368: memcpy(n2, "\\(dq", 4);
3369: n2 += 4;
3370: } else
3371: *n2++ = *ap;
3372: }
3373: if (i < ie)
3374: *n2++ = ' ';
1.16 schwarze 3375: }
1.12 schwarze 3376: }
3377:
1.16 schwarze 3378: /*
3379: * Replace the macro invocation
3380: * by the expanded macro.
3381: */
1.135 schwarze 3382:
1.110 schwarze 3383: free(buf->buf);
3384: buf->buf = n1;
1.120 schwarze 3385: *offs = 0;
1.16 schwarze 3386:
1.149 schwarze 3387: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3388: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3389: }
1.28 schwarze 3390:
1.178 schwarze 3391: /*
3392: * Calling a high-level macro that was renamed with .rn.
3393: * r->current_string has already been set up by roff_parse().
3394: */
3395: static enum rofferr
3396: roff_renamed(ROFF_ARGS)
3397: {
3398: char *nbuf;
3399:
1.187 schwarze 3400: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3401: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3402: free(buf->buf);
3403: buf->buf = nbuf;
3404: return ROFF_CONT;
3405: }
3406:
1.85 schwarze 3407: static size_t
1.28 schwarze 3408: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3409: {
3410: char *name, *cp;
1.85 schwarze 3411: size_t namesz;
1.28 schwarze 3412:
3413: name = *cpp;
3414: if ('\0' == *name)
1.149 schwarze 3415: return 0;
1.28 schwarze 3416:
1.85 schwarze 3417: /* Read until end of name and terminate it with NUL. */
3418: for (cp = name; 1; cp++) {
3419: if ('\0' == *cp || ' ' == *cp) {
3420: namesz = cp - name;
3421: break;
3422: }
1.28 schwarze 3423: if ('\\' != *cp)
3424: continue;
1.88 schwarze 3425: namesz = cp - name;
3426: if ('{' == cp[1] || '}' == cp[1])
3427: break;
1.28 schwarze 3428: cp++;
3429: if ('\\' == *cp)
3430: continue;
1.97 schwarze 3431: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3432: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3433: mandoc_escape((const char **)&cp, NULL, NULL);
3434: break;
1.28 schwarze 3435: }
3436:
3437: /* Read past spaces. */
3438: while (' ' == *cp)
3439: cp++;
3440:
3441: *cpp = cp;
1.149 schwarze 3442: return namesz;
1.28 schwarze 3443: }
3444:
1.16 schwarze 3445: /*
3446: * Store *string into the user-defined string called *name.
3447: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3448: * append == 0: replace mode
3449: * append == 1: single-line append mode
3450: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3451: */
1.8 schwarze 3452: static void
1.16 schwarze 3453: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3454: int append)
1.7 schwarze 3455: {
1.187 schwarze 3456: size_t namesz;
1.42 schwarze 3457:
1.187 schwarze 3458: namesz = strlen(name);
3459: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3460: string ? strlen(string) : 0, append);
1.187 schwarze 3461: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3462: }
3463:
3464: static void
3465: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3466: const char *string, size_t stringsz, int append)
1.42 schwarze 3467: {
3468: struct roffkv *n;
3469: char *c;
3470: int i;
3471: size_t oldch, newch;
1.7 schwarze 3472:
1.16 schwarze 3473: /* Search for an existing string with the same name. */
1.42 schwarze 3474: n = *r;
3475:
1.84 schwarze 3476: while (n && (namesz != n->key.sz ||
3477: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3478: n = n->next;
1.8 schwarze 3479:
3480: if (NULL == n) {
1.16 schwarze 3481: /* Create a new string table entry. */
1.42 schwarze 3482: n = mandoc_malloc(sizeof(struct roffkv));
3483: n->key.p = mandoc_strndup(name, namesz);
3484: n->key.sz = namesz;
3485: n->val.p = NULL;
3486: n->val.sz = 0;
3487: n->next = *r;
3488: *r = n;
1.66 schwarze 3489: } else if (0 == append) {
1.42 schwarze 3490: free(n->val.p);
3491: n->val.p = NULL;
3492: n->val.sz = 0;
1.16 schwarze 3493: }
3494:
3495: if (NULL == string)
3496: return;
3497:
3498: /*
3499: * One additional byte for the '\n' in multiline mode,
3500: * and one for the terminating '\0'.
3501: */
1.66 schwarze 3502: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3503:
3504: if (NULL == n->val.p) {
3505: n->val.p = mandoc_malloc(newch);
3506: *n->val.p = '\0';
1.16 schwarze 3507: oldch = 0;
3508: } else {
1.42 schwarze 3509: oldch = n->val.sz;
3510: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3511: }
3512:
3513: /* Skip existing content in the destination buffer. */
1.42 schwarze 3514: c = n->val.p + (int)oldch;
1.16 schwarze 3515:
3516: /* Append new content to the destination buffer. */
1.42 schwarze 3517: i = 0;
3518: while (i < (int)stringsz) {
1.16 schwarze 3519: /*
3520: * Rudimentary roff copy mode:
3521: * Handle escaped backslashes.
3522: */
1.42 schwarze 3523: if ('\\' == string[i] && '\\' == string[i + 1])
3524: i++;
3525: *c++ = string[i++];
1.16 schwarze 3526: }
1.8 schwarze 3527:
1.16 schwarze 3528: /* Append terminating bytes. */
1.66 schwarze 3529: if (1 < append)
1.16 schwarze 3530: *c++ = '\n';
1.42 schwarze 3531:
1.16 schwarze 3532: *c = '\0';
1.42 schwarze 3533: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3534: }
3535:
1.8 schwarze 3536: static const char *
1.187 schwarze 3537: roff_getstrn(const struct roff *r, const char *name, size_t len,
3538: int *deftype)
1.7 schwarze 3539: {
1.187 schwarze 3540: const struct roffkv *n;
3541: int i;
3542: enum roff_tok tok;
3543:
3544: if (*deftype & ROFFDEF_USER) {
3545: for (n = r->strtab; n != NULL; n = n->next) {
3546: if (strncmp(name, n->key.p, len) == 0 &&
3547: n->key.p[len] == '\0' &&
3548: n->val.p != NULL) {
3549: *deftype = ROFFDEF_USER;
3550: return n->val.p;
3551: }
3552: }
3553: }
3554: if (*deftype & ROFFDEF_PRE) {
3555: for (i = 0; i < PREDEFS_MAX; i++) {
3556: if (strncmp(name, predefs[i].name, len) == 0 &&
3557: predefs[i].name[len] == '\0') {
3558: *deftype = ROFFDEF_PRE;
3559: return predefs[i].str;
3560: }
3561: }
3562: }
3563: if (*deftype & ROFFDEF_REN) {
3564: for (n = r->rentab; n != NULL; n = n->next) {
3565: if (strncmp(name, n->key.p, len) == 0 &&
3566: n->key.p[len] == '\0' &&
3567: n->val.p != NULL) {
3568: *deftype = ROFFDEF_REN;
3569: return n->val.p;
3570: }
3571: }
3572: }
3573: if (*deftype & ROFFDEF_STD) {
3574: if (r->man->macroset != MACROSET_MAN) {
3575: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3576: if (strncmp(name, roff_name[tok], len) == 0 &&
3577: roff_name[tok][len] == '\0') {
3578: *deftype = ROFFDEF_STD;
3579: return NULL;
3580: }
3581: }
3582: }
3583: if (r->man->macroset != MACROSET_MDOC) {
3584: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3585: if (strncmp(name, roff_name[tok], len) == 0 &&
3586: roff_name[tok][len] == '\0') {
3587: *deftype = ROFFDEF_STD;
3588: return NULL;
3589: }
3590: }
3591: }
3592: }
3593: *deftype = 0;
1.149 schwarze 3594: return NULL;
1.7 schwarze 3595: }
3596:
1.8 schwarze 3597: static void
1.42 schwarze 3598: roff_freestr(struct roffkv *r)
1.7 schwarze 3599: {
1.42 schwarze 3600: struct roffkv *n, *nn;
1.7 schwarze 3601:
1.42 schwarze 3602: for (n = r; n; n = nn) {
3603: free(n->key.p);
3604: free(n->val.p);
1.7 schwarze 3605: nn = n->next;
3606: free(n);
3607: }
1.27 schwarze 3608: }
1.138 schwarze 3609:
3610: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 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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