Annotation of src/usr.bin/mandoc/roff.c, Revision 1.221
1.221 ! schwarze 1: /* $OpenBSD: roff.c,v 1.220 2018/12/13 05:13:15 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.197 schwarze 4: * Copyright (c) 2010-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.167 schwarze 23: #include <stddef.h>
24: #include <stdint.h>
1.51 schwarze 25: #include <stdio.h>
1.1 schwarze 26: #include <stdlib.h>
27: #include <string.h>
28:
1.74 schwarze 29: #include "mandoc_aux.h"
1.167 schwarze 30: #include "mandoc_ohash.h"
1.217 schwarze 31: #include "mandoc.h"
1.137 schwarze 32: #include "roff.h"
1.221 ! schwarze 33: #include "mandoc_parse.h"
1.98 daniel 34: #include "libmandoc.h"
1.138 schwarze 35: #include "roff_int.h"
1.218 schwarze 36: #include "tbl_parse.h"
1.219 schwarze 37: #include "eqn_parse.h"
1.2 schwarze 38:
1.43 schwarze 39: /* Maximum number of string expansions per line, to break infinite loops. */
40: #define EXPAND_LIMIT 1000
41:
1.187 schwarze 42: /* Types of definitions of macros and strings. */
43: #define ROFFDEF_USER (1 << 1) /* User-defined. */
44: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
45: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
46: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
47: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
48: ROFFDEF_REN | ROFFDEF_STD)
1.197 schwarze 49: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.187 schwarze 50:
1.138 schwarze 51: /* --- data types --------------------------------------------------------- */
52:
1.41 schwarze 53: /*
1.42 schwarze 54: * An incredibly-simple string buffer.
55: */
1.8 schwarze 56: struct roffstr {
1.42 schwarze 57: char *p; /* nil-terminated buffer */
58: size_t sz; /* saved strlen(p) */
59: };
60:
61: /*
62: * A key-value roffstr pair as part of a singly-linked list.
63: */
64: struct roffkv {
65: struct roffstr key;
66: struct roffstr val;
67: struct roffkv *next; /* next in list */
1.8 schwarze 68: };
69:
1.52 schwarze 70: /*
71: * A single number register as part of a singly-linked list.
72: */
73: struct roffreg {
74: struct roffstr key;
1.53 schwarze 75: int val;
1.199 schwarze 76: int step;
1.52 schwarze 77: struct roffreg *next;
78: };
79:
1.167 schwarze 80: /*
81: * Association of request and macro names with token IDs.
82: */
83: struct roffreq {
84: enum roff_tok tok;
85: char name[];
86: };
87:
1.211 schwarze 88: /*
89: * A macro processing context.
90: * More than one is needed when macro calls are nested.
91: */
92: struct mctx {
93: char **argv;
94: int argc;
95: int argsz;
96: };
97:
1.1 schwarze 98: struct roff {
1.35 schwarze 99: struct mparse *parse; /* parse point */
1.168 schwarze 100: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 101: struct roffnode *last; /* leaf of stack */
1.211 schwarze 102: struct mctx *mstack; /* stack of macro contexts */
1.96 schwarze 103: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 104: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 105: struct roffreg *regtab; /* number registers */
1.42 schwarze 106: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 107: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 108: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
109: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 110: const char *current_string; /* value of last called user macro */
1.27 schwarze 111: struct tbl_node *first_tbl; /* first table parsed */
112: struct tbl_node *last_tbl; /* last table parsed */
113: struct tbl_node *tbl; /* current table being parsed */
1.191 schwarze 114: struct eqn_node *last_eqn; /* equation parser */
115: struct eqn_node *eqn; /* active equation parser */
1.102 schwarze 116: int eqn_inline; /* current equation is inline */
1.96 schwarze 117: int options; /* parse options */
1.211 schwarze 118: int mstacksz; /* current size of mstack */
119: int mstackpos; /* position in mstack */
1.96 schwarze 120: int rstacksz; /* current size limit of rstack */
121: int rstackpos; /* position in rstack */
1.99 schwarze 122: int format; /* current file in mdoc or man format */
1.96 schwarze 123: char control; /* control character */
1.175 schwarze 124: char escape; /* escape character */
1.1 schwarze 125: };
126:
127: struct roffnode {
1.166 schwarze 128: enum roff_tok tok; /* type of node */
1.1 schwarze 129: struct roffnode *parent; /* up one in stack */
130: int line; /* parse line */
131: int col; /* parse col */
1.16 schwarze 132: char *name; /* node name, e.g. macro name */
1.2 schwarze 133: char *end; /* end-rules: custom token */
134: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 135: int rule; /* current evaluation rule */
1.1 schwarze 136: };
137:
138: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 139: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 140: struct buf *buf, /* input buffer */ \
1.1 schwarze 141: int ln, /* parse line */ \
1.2 schwarze 142: int ppos, /* original pos in buffer */ \
143: int pos, /* current pos in buffer */ \
144: int *offs /* reset offset of buffer data */
1.1 schwarze 145:
1.212 schwarze 146: typedef int (*roffproc)(ROFF_ARGS);
1.1 schwarze 147:
148: struct roffmac {
1.2 schwarze 149: roffproc proc; /* process new macro */
150: roffproc text; /* process as child text of macro */
151: roffproc sub; /* process as child of macro */
152: int flags;
153: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 154: };
155:
1.37 schwarze 156: struct predef {
157: const char *name; /* predefined input name */
158: const char *str; /* replacement symbol */
159: };
160:
161: #define PREDEF(__name, __str) \
162: { (__name), (__str) },
163:
1.138 schwarze 164: /* --- function prototypes ------------------------------------------------ */
165:
1.212 schwarze 166: static int roffnode_cleanscope(struct roff *);
167: static int roffnode_pop(struct roff *);
1.166 schwarze 168: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 169: const char *, int, int);
1.218 schwarze 170: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.212 schwarze 171: static int roff_als(ROFF_ARGS);
172: static int roff_block(ROFF_ARGS);
173: static int roff_block_text(ROFF_ARGS);
174: static int roff_block_sub(ROFF_ARGS);
175: static int roff_br(ROFF_ARGS);
176: static int roff_cblock(ROFF_ARGS);
177: static int roff_cc(ROFF_ARGS);
178: static int roff_ccond(struct roff *, int, int);
1.213 schwarze 179: static int roff_char(ROFF_ARGS);
1.212 schwarze 180: static int roff_cond(ROFF_ARGS);
181: static int roff_cond_text(ROFF_ARGS);
182: static int roff_cond_sub(ROFF_ARGS);
183: static int roff_ds(ROFF_ARGS);
184: static int roff_ec(ROFF_ARGS);
185: static int roff_eo(ROFF_ARGS);
186: static int roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 187: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 188: static int roff_evalnum(struct roff *, int,
189: const char *, int *, int *, int);
190: static int roff_evalpar(struct roff *, int,
1.133 schwarze 191: const char *, int *, int *, int);
1.71 schwarze 192: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 193: static void roff_free1(struct roff *);
1.52 schwarze 194: static void roff_freereg(struct roffreg *);
1.42 schwarze 195: static void roff_freestr(struct roffkv *);
1.85 schwarze 196: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 197: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 198: static int roff_getop(const char *, int *, char *);
1.199 schwarze 199: static int roff_getregn(struct roff *,
200: const char *, size_t, char);
1.145 schwarze 201: static int roff_getregro(const struct roff *,
202: const char *name);
1.197 schwarze 203: static const char *roff_getstrn(struct roff *,
1.187 schwarze 204: const char *, size_t, int *);
1.143 schwarze 205: static int roff_hasregn(const struct roff *,
206: const char *, size_t);
1.212 schwarze 207: static int roff_insec(ROFF_ARGS);
208: static int roff_it(ROFF_ARGS);
209: static int roff_line_ignore(ROFF_ARGS);
1.137 schwarze 210: static void roff_man_alloc1(struct roff_man *);
211: static void roff_man_free1(struct roff_man *);
1.212 schwarze 212: static int roff_manyarg(ROFF_ARGS);
213: static int roff_nop(ROFF_ARGS);
214: static int roff_nr(ROFF_ARGS);
215: static int roff_onearg(ROFF_ARGS);
1.166 schwarze 216: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 217: int, int);
1.212 schwarze 218: static int roff_parsetext(struct roff *, struct buf *,
1.177 schwarze 219: int, int *);
1.212 schwarze 220: static int roff_renamed(ROFF_ARGS);
221: static int roff_res(struct roff *, struct buf *, int, int);
222: static int roff_return(ROFF_ARGS);
223: static int roff_rm(ROFF_ARGS);
224: static int roff_rn(ROFF_ARGS);
225: static int roff_rr(ROFF_ARGS);
1.198 schwarze 226: static void roff_setregn(struct roff *, const char *,
1.199 schwarze 227: size_t, int, char, int);
1.8 schwarze 228: static void roff_setstr(struct roff *,
1.16 schwarze 229: const char *, const char *, int);
1.80 schwarze 230: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 231: size_t, const char *, size_t, int);
1.212 schwarze 232: static int roff_shift(ROFF_ARGS);
233: static int roff_so(ROFF_ARGS);
234: static int roff_tr(ROFF_ARGS);
235: static int roff_Dd(ROFF_ARGS);
236: static int roff_TE(ROFF_ARGS);
237: static int roff_TS(ROFF_ARGS);
238: static int roff_EQ(ROFF_ARGS);
239: static int roff_EN(ROFF_ARGS);
240: static int roff_T_(ROFF_ARGS);
241: static int roff_unsupp(ROFF_ARGS);
242: static int roff_userdef(ROFF_ARGS);
1.1 schwarze 243:
1.138 schwarze 244: /* --- constant data ------------------------------------------------------ */
245:
1.133 schwarze 246: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
247: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
248:
1.166 schwarze 249: const char *__roff_name[MAN_MAX + 1] = {
1.177 schwarze 250: "br", "ce", "ft", "ll",
1.184 schwarze 251: "mc", "po", "rj", "sp",
252: "ta", "ti", NULL,
1.166 schwarze 253: "ab", "ad", "af", "aln",
254: "als", "am", "am1", "ami",
255: "ami1", "as", "as1", "asciify",
256: "backtrace", "bd", "bleedat", "blm",
257: "box", "boxa", "bp", "BP",
258: "break", "breakchar", "brnl", "brp",
1.177 schwarze 259: "brpnl", "c2", "cc",
1.166 schwarze 260: "cf", "cflags", "ch", "char",
261: "chop", "class", "close", "CL",
262: "color", "composite", "continue", "cp",
263: "cropat", "cs", "cu", "da",
264: "dch", "Dd", "de", "de1",
265: "defcolor", "dei", "dei1", "device",
266: "devicem", "di", "do", "ds",
267: "ds1", "dwh", "dt", "ec",
268: "ecr", "ecs", "el", "em",
269: "EN", "eo", "EP", "EQ",
270: "errprint", "ev", "evc", "ex",
271: "fallback", "fam", "fc", "fchar",
272: "fcolor", "fdeferlig", "feature", "fkern",
273: "fl", "flig", "fp", "fps",
274: "fschar", "fspacewidth", "fspecial", "ftr",
275: "fzoom", "gcolor", "hc", "hcode",
276: "hidechar", "hla", "hlm", "hpf",
277: "hpfa", "hpfcode", "hw", "hy",
278: "hylang", "hylen", "hym", "hypp",
279: "hys", "ie", "if", "ig",
280: "index", "it", "itc", "IX",
281: "kern", "kernafter", "kernbefore", "kernpair",
282: "lc", "lc_ctype", "lds", "length",
283: "letadj", "lf", "lg", "lhang",
284: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 285: "ls", "lsm", "lt",
1.166 schwarze 286: "mediasize", "minss", "mk", "mso",
287: "na", "ne", "nh", "nhychar",
288: "nm", "nn", "nop", "nr",
289: "nrf", "nroff", "ns", "nx",
290: "open", "opena", "os", "output",
291: "padj", "papersize", "pc", "pev",
292: "pi", "PI", "pl", "pm",
1.184 schwarze 293: "pn", "pnr", "ps",
1.166 schwarze 294: "psbb", "pshape", "pso", "ptr",
295: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 296: "return", "rfschar", "rhang",
1.166 schwarze 297: "rm", "rn", "rnn", "rr",
298: "rs", "rt", "schar", "sentchar",
299: "shc", "shift", "sizes", "so",
300: "spacewidth", "special", "spreadwarn", "ss",
301: "sty", "substring", "sv", "sy",
1.172 schwarze 302: "T&", "tc", "TE",
1.173 schwarze 303: "TH", "tkf", "tl",
1.166 schwarze 304: "tm", "tm1", "tmc", "tr",
305: "track", "transchar", "trf", "trimat",
306: "trin", "trnt", "troff", "TS",
307: "uf", "ul", "unformat", "unwatch",
308: "unwatchn", "vpt", "vs", "warn",
309: "warnscale", "watch", "watchlength", "watchn",
310: "wh", "while", "write", "writec",
311: "writem", "xflag", ".", NULL,
1.178 schwarze 312: NULL, "text",
1.166 schwarze 313: "Dd", "Dt", "Os", "Sh",
314: "Ss", "Pp", "D1", "Dl",
315: "Bd", "Ed", "Bl", "El",
316: "It", "Ad", "An", "Ap",
317: "Ar", "Cd", "Cm", "Dv",
318: "Er", "Ev", "Ex", "Fa",
319: "Fd", "Fl", "Fn", "Ft",
320: "Ic", "In", "Li", "Nd",
321: "Nm", "Op", "Ot", "Pa",
322: "Rv", "St", "Va", "Vt",
323: "Xr", "%A", "%B", "%D",
324: "%I", "%J", "%N", "%O",
325: "%P", "%R", "%T", "%V",
326: "Ac", "Ao", "Aq", "At",
327: "Bc", "Bf", "Bo", "Bq",
328: "Bsx", "Bx", "Db", "Dc",
329: "Do", "Dq", "Ec", "Ef",
330: "Em", "Eo", "Fx", "Ms",
331: "No", "Ns", "Nx", "Ox",
332: "Pc", "Pf", "Po", "Pq",
333: "Qc", "Ql", "Qo", "Qq",
334: "Re", "Rs", "Sc", "So",
335: "Sq", "Sm", "Sx", "Sy",
336: "Tn", "Ux", "Xc", "Xo",
337: "Fo", "Fc", "Oo", "Oc",
338: "Bk", "Ek", "Bt", "Hf",
339: "Fr", "Ud", "Lb", "Lp",
340: "Lk", "Mt", "Brq", "Bro",
341: "Brc", "%C", "Es", "En",
1.171 schwarze 342: "Dx", "%Q", "%U", "Ta",
343: NULL,
1.166 schwarze 344: "TH", "SH", "SS", "TP",
1.204 schwarze 345: "TQ",
1.166 schwarze 346: "LP", "PP", "P", "IP",
347: "HP", "SM", "SB", "BI",
348: "IB", "BR", "RB", "R",
349: "B", "I", "IR", "RI",
1.171 schwarze 350: "nf", "fi",
1.166 schwarze 351: "RE", "RS", "DT", "UC",
1.169 schwarze 352: "PD", "AT", "in",
1.205 schwarze 353: "SY", "YS", "OP",
354: "EX", "EE", "UR",
1.189 bentley 355: "UE", "MT", "ME", NULL
1.166 schwarze 356: };
357: const char *const *roff_name = __roff_name;
358:
359: static struct roffmac roffs[TOKEN_NONE] = {
1.168 schwarze 360: { roff_br, NULL, NULL, 0 }, /* br */
1.177 schwarze 361: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.169 schwarze 362: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 363: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 364: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.184 schwarze 365: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 366: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 367: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 368: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 369: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 370: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 371: { roff_unsupp, NULL, NULL, 0 }, /* ab */
372: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
373: { roff_line_ignore, NULL, NULL, 0 }, /* af */
374: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 375: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 376: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
377: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
378: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
379: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
380: { roff_ds, NULL, NULL, 0 }, /* as */
381: { roff_ds, NULL, NULL, 0 }, /* as1 */
382: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
383: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
384: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
385: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
386: { roff_unsupp, NULL, NULL, 0 }, /* blm */
387: { roff_unsupp, NULL, NULL, 0 }, /* box */
388: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
389: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
390: { roff_unsupp, NULL, NULL, 0 }, /* BP */
391: { roff_unsupp, NULL, NULL, 0 }, /* break */
392: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
393: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 schwarze 394: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 395: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
396: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
397: { roff_cc, NULL, NULL, 0 }, /* cc */
398: { roff_insec, NULL, NULL, 0 }, /* cf */
399: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
400: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.213 schwarze 401: { roff_char, NULL, NULL, 0 }, /* char */
1.167 schwarze 402: { roff_unsupp, NULL, NULL, 0 }, /* chop */
403: { roff_line_ignore, NULL, NULL, 0 }, /* class */
404: { roff_insec, NULL, NULL, 0 }, /* close */
405: { roff_unsupp, NULL, NULL, 0 }, /* CL */
406: { roff_line_ignore, NULL, NULL, 0 }, /* color */
407: { roff_unsupp, NULL, NULL, 0 }, /* composite */
408: { roff_unsupp, NULL, NULL, 0 }, /* continue */
409: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
410: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
411: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
412: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
413: { roff_unsupp, NULL, NULL, 0 }, /* da */
414: { roff_unsupp, NULL, NULL, 0 }, /* dch */
415: { roff_Dd, NULL, NULL, 0 }, /* Dd */
416: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
417: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
418: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
419: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
420: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
421: { roff_unsupp, NULL, NULL, 0 }, /* device */
422: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
423: { roff_unsupp, NULL, NULL, 0 }, /* di */
424: { roff_unsupp, NULL, NULL, 0 }, /* do */
425: { roff_ds, NULL, NULL, 0 }, /* ds */
426: { roff_ds, NULL, NULL, 0 }, /* ds1 */
427: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
428: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 429: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 430: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
431: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
432: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
433: { roff_unsupp, NULL, NULL, 0 }, /* em */
434: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 435: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 436: { roff_unsupp, NULL, NULL, 0 }, /* EP */
437: { roff_EQ, NULL, NULL, 0 }, /* EQ */
438: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
439: { roff_unsupp, NULL, NULL, 0 }, /* ev */
440: { roff_unsupp, NULL, NULL, 0 }, /* evc */
441: { roff_unsupp, NULL, NULL, 0 }, /* ex */
442: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
443: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
444: { roff_unsupp, NULL, NULL, 0 }, /* fc */
445: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
446: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
447: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
448: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
449: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
450: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
451: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
452: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
453: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
454: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
455: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
456: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
457: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
458: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
459: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
460: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
461: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
462: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
463: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
464: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
465: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
466: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
467: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
468: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
469: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
470: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
471: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
472: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
473: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
474: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
475: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
476: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
477: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
478: { roff_unsupp, NULL, NULL, 0 }, /* index */
479: { roff_it, NULL, NULL, 0 }, /* it */
480: { roff_unsupp, NULL, NULL, 0 }, /* itc */
481: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
482: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
483: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
484: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
485: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
486: { roff_unsupp, NULL, NULL, 0 }, /* lc */
487: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
488: { roff_unsupp, NULL, NULL, 0 }, /* lds */
489: { roff_unsupp, NULL, NULL, 0 }, /* length */
490: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
491: { roff_insec, NULL, NULL, 0 }, /* lf */
492: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
493: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
494: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
495: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
496: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
497: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
498: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
499: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
500: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
501: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
502: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
503: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
504: { roff_insec, NULL, NULL, 0 }, /* mso */
505: { roff_line_ignore, NULL, NULL, 0 }, /* na */
506: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
507: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
508: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
509: { roff_unsupp, NULL, NULL, 0 }, /* nm */
510: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.202 schwarze 511: { roff_nop, NULL, NULL, 0 }, /* nop */
1.167 schwarze 512: { roff_nr, NULL, NULL, 0 }, /* nr */
513: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
514: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
515: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
516: { roff_insec, NULL, NULL, 0 }, /* nx */
517: { roff_insec, NULL, NULL, 0 }, /* open */
518: { roff_insec, NULL, NULL, 0 }, /* opena */
519: { roff_line_ignore, NULL, NULL, 0 }, /* os */
520: { roff_unsupp, NULL, NULL, 0 }, /* output */
521: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
522: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
523: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
524: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
525: { roff_insec, NULL, NULL, 0 }, /* pi */
526: { roff_unsupp, NULL, NULL, 0 }, /* PI */
527: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
528: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
529: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
530: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
531: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
532: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
533: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
534: { roff_insec, NULL, NULL, 0 }, /* pso */
535: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
536: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
537: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
538: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
539: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.211 schwarze 540: { roff_return, NULL, NULL, 0 }, /* return */
1.167 schwarze 541: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
542: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
543: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 544: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 545: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
546: { roff_rr, NULL, NULL, 0 }, /* rr */
547: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
548: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
549: { roff_unsupp, NULL, NULL, 0 }, /* schar */
550: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
551: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.211 schwarze 552: { roff_shift, NULL, NULL, 0 }, /* shift */
1.167 schwarze 553: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
554: { roff_so, NULL, NULL, 0 }, /* so */
555: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
556: { roff_line_ignore, NULL, NULL, 0 }, /* special */
557: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
558: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
559: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
560: { roff_unsupp, NULL, NULL, 0 }, /* substring */
561: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
562: { roff_insec, NULL, NULL, 0 }, /* sy */
563: { roff_T_, NULL, NULL, 0 }, /* T& */
564: { roff_unsupp, NULL, NULL, 0 }, /* tc */
565: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 566: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 567: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
568: { roff_unsupp, NULL, NULL, 0 }, /* tl */
569: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
570: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
571: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
572: { roff_tr, NULL, NULL, 0 }, /* tr */
573: { roff_line_ignore, NULL, NULL, 0 }, /* track */
574: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
575: { roff_insec, NULL, NULL, 0 }, /* trf */
576: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
577: { roff_unsupp, NULL, NULL, 0 }, /* trin */
578: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
579: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
580: { roff_TS, NULL, NULL, 0 }, /* TS */
581: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
582: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
583: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
584: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
585: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
586: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
587: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
588: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
589: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
590: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
591: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
592: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
593: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.212 schwarze 594: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.167 schwarze 595: { roff_insec, NULL, NULL, 0 }, /* write */
596: { roff_insec, NULL, NULL, 0 }, /* writec */
597: { roff_insec, NULL, NULL, 0 }, /* writem */
598: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
599: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 600: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 601: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 602: };
603:
1.37 schwarze 604: /* Array of injected predefined strings. */
605: #define PREDEFS_MAX 38
606: static const struct predef predefs[PREDEFS_MAX] = {
607: #include "predefs.in"
608: };
609:
1.177 schwarze 610: static int roffce_lines; /* number of input lines to center */
611: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 612: static int roffit_lines; /* number of lines to delay */
613: static char *roffit_macro; /* nil-terminated macro line */
614:
1.80 schwarze 615:
1.138 schwarze 616: /* --- request table ------------------------------------------------------ */
617:
1.167 schwarze 618: struct ohash *
619: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 620: {
1.167 schwarze 621: struct ohash *htab;
622: struct roffreq *req;
623: enum roff_tok tok;
624: size_t sz;
625: unsigned int slot;
1.3 schwarze 626:
1.167 schwarze 627: htab = mandoc_malloc(sizeof(*htab));
628: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 629:
1.167 schwarze 630: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 631: if (roff_name[tok] == NULL)
632: continue;
1.167 schwarze 633: sz = strlen(roff_name[tok]);
634: req = mandoc_malloc(sizeof(*req) + sz + 1);
635: req->tok = tok;
636: memcpy(req->name, roff_name[tok], sz + 1);
637: slot = ohash_qlookup(htab, req->name);
638: ohash_insert(htab, slot, req);
1.3 schwarze 639: }
1.167 schwarze 640: return htab;
1.3 schwarze 641: }
642:
1.167 schwarze 643: void
644: roffhash_free(struct ohash *htab)
1.1 schwarze 645: {
1.167 schwarze 646: struct roffreq *req;
647: unsigned int slot;
1.1 schwarze 648:
1.167 schwarze 649: if (htab == NULL)
650: return;
651: for (req = ohash_first(htab, &slot); req != NULL;
652: req = ohash_next(htab, &slot))
653: free(req);
654: ohash_delete(htab);
655: free(htab);
656: }
657:
658: enum roff_tok
659: roffhash_find(struct ohash *htab, const char *name, size_t sz)
660: {
661: struct roffreq *req;
662: const char *end;
663:
664: if (sz) {
665: end = name + sz;
666: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
667: } else
668: req = ohash_find(htab, ohash_qlookup(htab, name));
669: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 670: }
671:
1.138 schwarze 672: /* --- stack of request blocks -------------------------------------------- */
673:
1.1 schwarze 674: /*
675: * Pop the current node off of the stack of roff instructions currently
676: * pending.
677: */
1.212 schwarze 678: static int
1.1 schwarze 679: roffnode_pop(struct roff *r)
680: {
681: struct roffnode *p;
1.212 schwarze 682: int inloop;
1.1 schwarze 683:
1.80 schwarze 684: p = r->last;
1.212 schwarze 685: inloop = p->tok == ROFF_while;
686: r->last = p->parent;
1.16 schwarze 687: free(p->name);
688: free(p->end);
1.1 schwarze 689: free(p);
1.212 schwarze 690: return inloop;
1.1 schwarze 691: }
692:
693: /*
694: * Push a roff node onto the instruction stack. This must later be
695: * removed with roffnode_pop().
696: */
1.11 schwarze 697: static void
1.166 schwarze 698: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 699: int line, int col)
1.1 schwarze 700: {
701: struct roffnode *p;
702:
1.11 schwarze 703: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 704: p->tok = tok;
1.16 schwarze 705: if (name)
706: p->name = mandoc_strdup(name);
1.1 schwarze 707: p->parent = r->last;
708: p->line = line;
709: p->col = col;
1.71 schwarze 710: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 711:
712: r->last = p;
713: }
714:
1.138 schwarze 715: /* --- roff parser state data management ---------------------------------- */
716:
1.1 schwarze 717: static void
718: roff_free1(struct roff *r)
719: {
1.42 schwarze 720: int i;
1.27 schwarze 721:
1.218 schwarze 722: tbl_free(r->first_tbl);
1.27 schwarze 723: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 724:
1.219 schwarze 725: eqn_free(r->last_eqn);
1.191 schwarze 726: r->last_eqn = r->eqn = NULL;
1.32 schwarze 727:
1.211 schwarze 728: while (r->mstackpos >= 0)
729: roff_userret(r);
730:
1.1 schwarze 731: while (r->last)
732: roffnode_pop(r);
1.27 schwarze 733:
1.96 schwarze 734: free (r->rstack);
735: r->rstack = NULL;
736: r->rstacksz = 0;
737: r->rstackpos = -1;
738:
739: roff_freereg(r->regtab);
740: r->regtab = NULL;
741:
1.42 schwarze 742: roff_freestr(r->strtab);
1.178 schwarze 743: roff_freestr(r->rentab);
1.42 schwarze 744: roff_freestr(r->xmbtab);
1.178 schwarze 745: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 746:
747: if (r->xtab)
748: for (i = 0; i < 128; i++)
749: free(r->xtab[i].p);
750: free(r->xtab);
751: r->xtab = NULL;
1.1 schwarze 752: }
753:
754: void
755: roff_reset(struct roff *r)
756: {
757: roff_free1(r);
1.99 schwarze 758: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 759: r->control = '\0';
760: r->escape = '\\';
1.179 schwarze 761: roffce_lines = 0;
762: roffce_node = NULL;
763: roffit_lines = 0;
764: roffit_macro = NULL;
1.1 schwarze 765: }
766:
767: void
768: roff_free(struct roff *r)
769: {
1.211 schwarze 770: int i;
771:
1.1 schwarze 772: roff_free1(r);
1.211 schwarze 773: for (i = 0; i < r->mstacksz; i++)
774: free(r->mstack[i].argv);
775: free(r->mstack);
1.167 schwarze 776: roffhash_free(r->reqtab);
1.1 schwarze 777: free(r);
778: }
779:
780: struct roff *
1.151 schwarze 781: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 782: {
783: struct roff *r;
784:
1.11 schwarze 785: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 786: r->parse = parse;
1.200 schwarze 787: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.72 schwarze 788: r->options = options;
1.99 schwarze 789: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.211 schwarze 790: r->mstackpos = -1;
1.2 schwarze 791: r->rstackpos = -1;
1.175 schwarze 792: r->escape = '\\';
1.149 schwarze 793: return r;
1.137 schwarze 794: }
795:
1.138 schwarze 796: /* --- syntax tree state data management ---------------------------------- */
797:
1.137 schwarze 798: static void
799: roff_man_free1(struct roff_man *man)
800: {
801:
1.138 schwarze 802: if (man->first != NULL)
803: roff_node_delete(man, man->first);
1.137 schwarze 804: free(man->meta.msec);
805: free(man->meta.vol);
806: free(man->meta.os);
807: free(man->meta.arch);
808: free(man->meta.title);
809: free(man->meta.name);
810: free(man->meta.date);
811: }
812:
813: static void
814: roff_man_alloc1(struct roff_man *man)
815: {
816:
817: memset(&man->meta, 0, sizeof(man->meta));
818: man->first = mandoc_calloc(1, sizeof(*man->first));
819: man->first->type = ROFFT_ROOT;
820: man->last = man->first;
821: man->last_es = NULL;
822: man->flags = 0;
823: man->macroset = MACROSET_NONE;
824: man->lastsec = man->lastnamed = SEC_NONE;
825: man->next = ROFF_NEXT_CHILD;
826: }
827:
828: void
829: roff_man_reset(struct roff_man *man)
830: {
831:
832: roff_man_free1(man);
833: roff_man_alloc1(man);
834: }
835:
836: void
837: roff_man_free(struct roff_man *man)
838: {
839:
840: roff_man_free1(man);
841: free(man);
842: }
843:
844: struct roff_man *
845: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.188 schwarze 846: const char *os_s, int quick)
1.137 schwarze 847: {
848: struct roff_man *man;
849:
850: man = mandoc_calloc(1, sizeof(*man));
851: man->parse = parse;
852: man->roff = roff;
1.188 schwarze 853: man->os_s = os_s;
1.137 schwarze 854: man->quick = quick;
855: roff_man_alloc1(man);
1.168 schwarze 856: roff->man = man;
1.149 schwarze 857: return man;
1.1 schwarze 858: }
859:
1.138 schwarze 860: /* --- syntax tree handling ----------------------------------------------- */
861:
862: struct roff_node *
863: roff_node_alloc(struct roff_man *man, int line, int pos,
864: enum roff_type type, int tok)
865: {
866: struct roff_node *n;
867:
868: n = mandoc_calloc(1, sizeof(*n));
869: n->line = line;
870: n->pos = pos;
871: n->tok = tok;
872: n->type = type;
873: n->sec = man->lastsec;
874:
875: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 876: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 877: else
1.157 schwarze 878: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 879: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 880: n->flags |= NODE_LINE;
1.138 schwarze 881: man->flags &= ~MDOC_NEWLINE;
882:
1.149 schwarze 883: return n;
1.138 schwarze 884: }
885:
886: void
887: roff_node_append(struct roff_man *man, struct roff_node *n)
888: {
889:
890: switch (man->next) {
891: case ROFF_NEXT_SIBLING:
1.153 schwarze 892: if (man->last->next != NULL) {
893: n->next = man->last->next;
894: man->last->next->prev = n;
895: } else
896: man->last->parent->last = n;
1.138 schwarze 897: man->last->next = n;
898: n->prev = man->last;
899: n->parent = man->last->parent;
900: break;
901: case ROFF_NEXT_CHILD:
1.159 schwarze 902: if (man->last->child != NULL) {
903: n->next = man->last->child;
904: man->last->child->prev = n;
905: } else
906: man->last->last = n;
1.138 schwarze 907: man->last->child = n;
908: n->parent = man->last;
909: break;
910: default:
911: abort();
912: }
1.154 schwarze 913: man->last = n;
1.138 schwarze 914:
915: switch (n->type) {
916: case ROFFT_HEAD:
917: n->parent->head = n;
918: break;
919: case ROFFT_BODY:
1.154 schwarze 920: if (n->end != ENDBODY_NOT)
921: return;
1.138 schwarze 922: n->parent->body = n;
923: break;
924: case ROFFT_TAIL:
925: n->parent->tail = n;
926: break;
927: default:
1.154 schwarze 928: return;
1.138 schwarze 929: }
1.154 schwarze 930:
931: /*
932: * Copy over the normalised-data pointer of our parent. Not
933: * everybody has one, but copying a null pointer is fine.
934: */
935:
936: n->norm = n->parent->norm;
937: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 938: }
939:
1.139 schwarze 940: void
941: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
942: {
943: struct roff_node *n;
944:
945: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
946: n->string = roff_strdup(man->roff, word);
947: roff_node_append(man, n);
1.158 schwarze 948: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 949: man->next = ROFF_NEXT_SIBLING;
950: }
951:
952: void
953: roff_word_append(struct roff_man *man, const char *word)
954: {
955: struct roff_node *n;
956: char *addstr, *newstr;
957:
958: n = man->last;
959: addstr = roff_strdup(man->roff, word);
960: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
961: free(addstr);
962: free(n->string);
963: n->string = newstr;
964: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 965: }
966:
967: void
968: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
969: {
970: struct roff_node *n;
971:
972: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
973: roff_node_append(man, n);
974: man->next = ROFF_NEXT_CHILD;
975: }
976:
977: struct roff_node *
978: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
979: {
980: struct roff_node *n;
981:
982: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
983: roff_node_append(man, n);
984: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 985: return n;
1.139 schwarze 986: }
987:
1.138 schwarze 988: struct roff_node *
989: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
990: {
991: struct roff_node *n;
992:
993: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
994: roff_node_append(man, n);
995: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 996: return n;
1.138 schwarze 997: }
998:
999: struct roff_node *
1000: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1001: {
1002: struct roff_node *n;
1003:
1004: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1005: roff_node_append(man, n);
1006: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1007: return n;
1.139 schwarze 1008: }
1009:
1.193 schwarze 1010: static void
1.218 schwarze 1011: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.139 schwarze 1012: {
1013: struct roff_node *n;
1.218 schwarze 1014: struct tbl_span *span;
1.139 schwarze 1015:
1016: if (man->macroset == MACROSET_MAN)
1.174 schwarze 1017: man_breakscope(man, ROFF_TS);
1.193 schwarze 1018: while ((span = tbl_span(tbl)) != NULL) {
1.218 schwarze 1019: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.193 schwarze 1020: n->span = span;
1021: roff_node_append(man, n);
1022: n->flags |= NODE_VALID | NODE_ENDED;
1023: man->next = ROFF_NEXT_SIBLING;
1024: }
1.138 schwarze 1025: }
1026:
1027: void
1028: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1029: {
1030:
1031: /* Adjust siblings. */
1032:
1033: if (n->prev)
1034: n->prev->next = n->next;
1035: if (n->next)
1036: n->next->prev = n->prev;
1037:
1038: /* Adjust parent. */
1039:
1040: if (n->parent != NULL) {
1041: if (n->parent->child == n)
1042: n->parent->child = n->next;
1043: if (n->parent->last == n)
1044: n->parent->last = n->prev;
1045: }
1046:
1047: /* Adjust parse point. */
1048:
1049: if (man == NULL)
1050: return;
1051: if (man->last == n) {
1052: if (n->prev == NULL) {
1053: man->last = n->parent;
1054: man->next = ROFF_NEXT_CHILD;
1055: } else {
1056: man->last = n->prev;
1057: man->next = ROFF_NEXT_SIBLING;
1058: }
1059: }
1060: if (man->first == n)
1061: man->first = NULL;
1.216 schwarze 1062: }
1063:
1064: void
1065: roff_node_relink(struct roff_man *man, struct roff_node *n)
1066: {
1067: roff_node_unlink(man, n);
1068: n->prev = n->next = NULL;
1069: roff_node_append(man, n);
1.138 schwarze 1070: }
1071:
1072: void
1073: roff_node_free(struct roff_node *n)
1074: {
1075:
1076: if (n->args != NULL)
1077: mdoc_argv_free(n->args);
1078: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1079: free(n->norm);
1.219 schwarze 1080: eqn_box_free(n->eqn);
1.138 schwarze 1081: free(n->string);
1082: free(n);
1083: }
1084:
1085: void
1086: roff_node_delete(struct roff_man *man, struct roff_node *n)
1087: {
1088:
1089: while (n->child != NULL)
1090: roff_node_delete(man, n->child);
1091: roff_node_unlink(man, n);
1092: roff_node_free(n);
1.141 schwarze 1093: }
1094:
1095: void
1096: deroff(char **dest, const struct roff_node *n)
1097: {
1098: char *cp;
1099: size_t sz;
1100:
1101: if (n->type != ROFFT_TEXT) {
1102: for (n = n->child; n != NULL; n = n->next)
1103: deroff(dest, n);
1104: return;
1105: }
1106:
1.160 schwarze 1107: /* Skip leading whitespace. */
1.141 schwarze 1108:
1.160 schwarze 1109: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1110: if (cp[0] == '\\' && cp[1] != '\0' &&
1111: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1112: cp++;
1.160 schwarze 1113: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1114: break;
1115: }
1116:
1.161 schwarze 1117: /* Skip trailing backslash. */
1118:
1119: sz = strlen(cp);
1.162 schwarze 1120: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1121: sz--;
1122:
1.141 schwarze 1123: /* Skip trailing whitespace. */
1124:
1.161 schwarze 1125: for (; sz; sz--)
1.141 schwarze 1126: if ( ! isspace((unsigned char)cp[sz-1]))
1127: break;
1128:
1129: /* Skip empty strings. */
1130:
1131: if (sz == 0)
1132: return;
1133:
1134: if (*dest == NULL) {
1135: *dest = mandoc_strndup(cp, sz);
1136: return;
1137: }
1138:
1139: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1140: free(*dest);
1141: *dest = cp;
1.138 schwarze 1142: }
1143:
1144: /* --- main functions of the roff parser ---------------------------------- */
1145:
1.8 schwarze 1146: /*
1.79 schwarze 1147: * In the current line, expand escape sequences that tend to get
1148: * used in numerical expressions and conditional requests.
1149: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1150: */
1.212 schwarze 1151: static int
1.110 schwarze 1152: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1153: {
1.211 schwarze 1154: struct mctx *ctx; /* current macro call context */
1.81 schwarze 1155: char ubuf[24]; /* buffer to print the number */
1.200 schwarze 1156: struct roff_node *n; /* used for header comments */
1.78 schwarze 1157: const char *start; /* start of the string to process */
1.82 schwarze 1158: char *stesc; /* start of an escape sequence ('\\') */
1.200 schwarze 1159: char *ep; /* end of comment string */
1.23 schwarze 1160: const char *stnam; /* start of the name, after "[(*" */
1161: const char *cp; /* end of the name, e.g. before ']' */
1162: const char *res; /* the string to be substituted */
1.110 schwarze 1163: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1164: size_t maxl; /* expected length of the escape name */
1165: size_t naml; /* actual length of the escape name */
1.211 schwarze 1166: size_t asz; /* length of the replacement */
1167: size_t rsz; /* length of the rest of the string */
1.109 schwarze 1168: enum mandoc_esc esc; /* type of the escape sequence */
1169: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1170: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1171: int npos; /* position in numeric expression */
1.91 schwarze 1172: int arg_complete; /* argument not interrupted by eol */
1.211 schwarze 1173: int quote_args; /* true for \\$@, false for \\$* */
1.175 schwarze 1174: int done; /* no more input available */
1.187 schwarze 1175: int deftype; /* type of definition to paste */
1.195 schwarze 1176: int rcsid; /* kind of RCS id seen */
1.199 schwarze 1177: char sign; /* increment number register */
1.79 schwarze 1178: char term; /* character terminating the escape */
1.8 schwarze 1179:
1.175 schwarze 1180: /* Search forward for comments. */
1181:
1182: done = 0;
1183: start = buf->buf + pos;
1184: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1185: if (stesc[0] != r->escape || stesc[1] == '\0')
1186: continue;
1187: stesc++;
1188: if (*stesc != '"' && *stesc != '#')
1189: continue;
1.185 schwarze 1190:
1191: /* Comment found, look for RCS id. */
1192:
1.195 schwarze 1193: rcsid = 0;
1.185 schwarze 1194: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.195 schwarze 1195: rcsid = 1 << MANDOC_OS_OPENBSD;
1.185 schwarze 1196: cp += 8;
1197: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.195 schwarze 1198: rcsid = 1 << MANDOC_OS_NETBSD;
1.185 schwarze 1199: cp += 7;
1200: }
1201: if (cp != NULL &&
1202: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1203: strchr(cp, '$') != NULL) {
1.195 schwarze 1204: if (r->man->meta.rcsids & rcsid)
1.186 schwarze 1205: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1206: ln, stesc + 1 - buf->buf, stesc + 1);
1.195 schwarze 1207: r->man->meta.rcsids |= rcsid;
1.186 schwarze 1208: }
1.185 schwarze 1209:
1210: /* Handle trailing whitespace. */
1211:
1.200 schwarze 1212: ep = strchr(stesc--, '\0') - 1;
1213: if (*ep == '\n') {
1.175 schwarze 1214: done = 1;
1.200 schwarze 1215: ep--;
1.175 schwarze 1216: }
1.200 schwarze 1217: if (*ep == ' ' || *ep == '\t')
1.175 schwarze 1218: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1.200 schwarze 1219: ln, ep - buf->buf, NULL);
1220:
1221: /*
1222: * Save comments preceding the title macro
1223: * in the syntax tree.
1224: */
1225:
1226: if (r->format == 0) {
1227: while (*ep == ' ' || *ep == '\t')
1228: ep--;
1229: ep[1] = '\0';
1230: n = roff_node_alloc(r->man,
1231: ln, stesc + 1 - buf->buf,
1232: ROFFT_COMMENT, TOKEN_NONE);
1233: n->string = mandoc_strdup(stesc + 2);
1234: roff_node_append(r->man, n);
1235: n->flags |= NODE_VALID | NODE_ENDED;
1236: r->man->next = ROFF_NEXT_SIBLING;
1237: }
1238:
1.206 schwarze 1239: /* Line continuation with comment. */
1240:
1241: if (stesc[1] == '#') {
1242: *stesc = '\0';
1.212 schwarze 1243: return ROFF_IGN | ROFF_APPEND;
1.206 schwarze 1244: }
1245:
1246: /* Discard normal comments. */
1.200 schwarze 1247:
1.207 schwarze 1248: while (stesc > start && stesc[-1] == ' ' &&
1249: (stesc == start + 1 || stesc[-2] != '\\'))
1.175 schwarze 1250: stesc--;
1251: *stesc = '\0';
1252: break;
1253: }
1254: if (stesc == start)
1255: return ROFF_CONT;
1256: stesc--;
1257:
1258: /* Notice the end of the input. */
1259:
1260: if (*stesc == '\n') {
1261: *stesc-- = '\0';
1262: done = 1;
1263: }
1264:
1.43 schwarze 1265: expand_count = 0;
1.175 schwarze 1266: while (stesc >= start) {
1.43 schwarze 1267:
1.78 schwarze 1268: /* Search backwards for the next backslash. */
1269:
1.175 schwarze 1270: if (*stesc != r->escape) {
1271: if (*stesc == '\\') {
1272: *stesc = '\0';
1273: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1274: buf->buf, stesc + 1) + 1;
1275: start = nbuf + pos;
1276: stesc = nbuf + (stesc - buf->buf);
1277: free(buf->buf);
1278: buf->buf = nbuf;
1279: }
1280: stesc--;
1.78 schwarze 1281: continue;
1.175 schwarze 1282: }
1.78 schwarze 1283:
1284: /* If it is escaped, skip it. */
1285:
1286: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1287: if (*cp != r->escape)
1.78 schwarze 1288: break;
1289:
1.110 schwarze 1290: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1291: while (stesc > cp)
1292: *stesc-- = '\\';
1.78 schwarze 1293: continue;
1.175 schwarze 1294: } else if (stesc[1] != '\0') {
1295: *stesc = '\\';
1296: } else {
1297: *stesc-- = '\0';
1298: if (done)
1299: continue;
1300: else
1.212 schwarze 1301: return ROFF_IGN | ROFF_APPEND;
1.78 schwarze 1302: }
1.23 schwarze 1303:
1.79 schwarze 1304: /* Decide whether to expand or to check only. */
1.23 schwarze 1305:
1.79 schwarze 1306: term = '\0';
1.78 schwarze 1307: cp = stesc + 1;
1.53 schwarze 1308: switch (*cp) {
1.80 schwarze 1309: case '*':
1.211 schwarze 1310: case '$':
1.53 schwarze 1311: res = NULL;
1312: break;
1.80 schwarze 1313: case 'B':
1314: case 'w':
1.79 schwarze 1315: term = cp[1];
1316: /* FALLTHROUGH */
1.80 schwarze 1317: case 'n':
1.199 schwarze 1318: sign = cp[1];
1319: if (sign == '+' || sign == '-')
1320: cp++;
1.53 schwarze 1321: res = ubuf;
1322: break;
1323: default:
1.109 schwarze 1324: esc = mandoc_escape(&cp, &stnam, &inaml);
1325: if (esc == ESCAPE_ERROR ||
1326: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1327: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1328: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1329: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1330: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1331: stesc--;
1.78 schwarze 1332: continue;
1.42 schwarze 1333: }
1334:
1.78 schwarze 1335: if (EXPAND_LIMIT < ++expand_count) {
1336: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1337: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1338: return ROFF_IGN;
1.78 schwarze 1339: }
1.23 schwarze 1340:
1341: /*
1342: * The third character decides the length
1.53 schwarze 1343: * of the name of the string or register.
1.23 schwarze 1344: * Save a pointer to the name.
1345: */
1346:
1.110 schwarze 1347: if (term == '\0') {
1.79 schwarze 1348: switch (*++cp) {
1.80 schwarze 1349: case '\0':
1.79 schwarze 1350: maxl = 0;
1351: break;
1.80 schwarze 1352: case '(':
1.79 schwarze 1353: cp++;
1354: maxl = 2;
1355: break;
1.80 schwarze 1356: case '[':
1.79 schwarze 1357: cp++;
1358: term = ']';
1359: maxl = 0;
1360: break;
1361: default:
1362: maxl = 1;
1363: break;
1364: }
1365: } else {
1366: cp += 2;
1.8 schwarze 1367: maxl = 0;
1368: }
1.23 schwarze 1369: stnam = cp;
1.8 schwarze 1370:
1.23 schwarze 1371: /* Advance to the end of the name. */
1.8 schwarze 1372:
1.125 schwarze 1373: naml = 0;
1.91 schwarze 1374: arg_complete = 1;
1.125 schwarze 1375: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1376: if (*cp == '\0') {
1.92 schwarze 1377: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1378: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1379: arg_complete = 0;
1.79 schwarze 1380: break;
1.42 schwarze 1381: }
1.110 schwarze 1382: if (maxl == 0 && *cp == term) {
1.79 schwarze 1383: cp++;
1.125 schwarze 1384: break;
1385: }
1386: if (*cp++ != '\\' || stesc[1] != 'w') {
1387: naml++;
1388: continue;
1389: }
1390: switch (mandoc_escape(&cp, NULL, NULL)) {
1391: case ESCAPE_SPECIAL:
1392: case ESCAPE_UNICODE:
1393: case ESCAPE_NUMBERED:
1394: case ESCAPE_OVERSTRIKE:
1395: naml++;
1396: break;
1397: default:
1.8 schwarze 1398: break;
1.79 schwarze 1399: }
1.8 schwarze 1400: }
1401:
1.23 schwarze 1402: /*
1403: * Retrieve the replacement string; if it is
1404: * undefined, resume searching for escapes.
1405: */
1406:
1.79 schwarze 1407: switch (stesc[1]) {
1.80 schwarze 1408: case '*':
1.187 schwarze 1409: if (arg_complete) {
1410: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1411: res = roff_getstrn(r, stnam, naml, &deftype);
1.203 schwarze 1412:
1413: /*
1414: * If not overriden, let \*(.T
1415: * through to the formatters.
1416: */
1417:
1418: if (res == NULL && naml == 2 &&
1419: stnam[0] == '.' && stnam[1] == 'T') {
1420: roff_setstrn(&r->strtab,
1421: ".T", 2, NULL, 0, 0);
1422: stesc--;
1423: continue;
1424: }
1.187 schwarze 1425: }
1.79 schwarze 1426: break;
1.211 schwarze 1427: case '$':
1428: if (r->mstackpos < 0) {
1429: mandoc_vmsg(MANDOCERR_ARG_UNDEF,
1430: r->parse, ln, (int)(stesc - buf->buf),
1431: "%.3s", stesc);
1432: break;
1433: }
1434: ctx = r->mstack + r->mstackpos;
1435: npos = stesc[2] - '1';
1436: if (npos >= 0 && npos <= 8) {
1437: res = npos < ctx->argc ?
1438: ctx->argv[npos] : "";
1439: break;
1440: }
1441: if (stesc[2] == '*')
1442: quote_args = 0;
1443: else if (stesc[2] == '@')
1444: quote_args = 1;
1445: else {
1446: mandoc_vmsg(MANDOCERR_ARG_NONUM,
1447: r->parse, ln, (int)(stesc - buf->buf),
1448: "%.3s", stesc);
1449: break;
1450: }
1451: asz = 0;
1452: for (npos = 0; npos < ctx->argc; npos++) {
1453: if (npos)
1454: asz++; /* blank */
1455: if (quote_args)
1456: asz += 2; /* quotes */
1457: asz += strlen(ctx->argv[npos]);
1458: }
1459: if (asz != 3) {
1460: rsz = buf->sz - (stesc - buf->buf) - 3;
1461: if (asz < 3)
1462: memmove(stesc + asz, stesc + 3, rsz);
1463: buf->sz += asz - 3;
1464: nbuf = mandoc_realloc(buf->buf, buf->sz);
1465: start = nbuf + pos;
1466: stesc = nbuf + (stesc - buf->buf);
1467: buf->buf = nbuf;
1468: if (asz > 3)
1469: memmove(stesc + asz, stesc + 3, rsz);
1470: }
1471: for (npos = 0; npos < ctx->argc; npos++) {
1472: if (npos)
1473: *stesc++ = ' ';
1474: if (quote_args)
1475: *stesc++ = '"';
1476: cp = ctx->argv[npos];
1477: while (*cp != '\0')
1478: *stesc++ = *cp++;
1479: if (quote_args)
1480: *stesc++ = '"';
1481: }
1482: continue;
1.80 schwarze 1483: case 'B':
1.79 schwarze 1484: npos = 0;
1.91 schwarze 1485: ubuf[0] = arg_complete &&
1.133 schwarze 1486: roff_evalnum(r, ln, stnam, &npos,
1487: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1488: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1489: ubuf[1] = '\0';
1490: break;
1.80 schwarze 1491: case 'n':
1.91 schwarze 1492: if (arg_complete)
1493: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.199 schwarze 1494: roff_getregn(r, stnam, naml, sign));
1.91 schwarze 1495: else
1496: ubuf[0] = '\0';
1.79 schwarze 1497: break;
1.80 schwarze 1498: case 'w':
1.91 schwarze 1499: /* use even incomplete args */
1.81 schwarze 1500: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1501: 24 * (int)naml);
1502: break;
1503: }
1.8 schwarze 1504:
1.110 schwarze 1505: if (res == NULL) {
1.211 schwarze 1506: if (stesc[1] == '*')
1507: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1508: r->parse, ln, (int)(stesc - buf->buf),
1509: "%.*s", (int)naml, stnam);
1.37 schwarze 1510: res = "";
1.118 schwarze 1511: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1512: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1513: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1514: return ROFF_IGN;
1.8 schwarze 1515: }
1516:
1.23 schwarze 1517: /* Replace the escape sequence by the string. */
1518:
1.82 schwarze 1519: *stesc = '\0';
1.110 schwarze 1520: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1521: buf->buf, res, cp) + 1;
1.8 schwarze 1522:
1.78 schwarze 1523: /* Prepare for the next replacement. */
1.8 schwarze 1524:
1.78 schwarze 1525: start = nbuf + pos;
1.110 schwarze 1526: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1527: free(buf->buf);
1528: buf->buf = nbuf;
1.42 schwarze 1529: }
1.149 schwarze 1530: return ROFF_CONT;
1.42 schwarze 1531: }
1532:
1533: /*
1.147 schwarze 1534: * Process text streams.
1.42 schwarze 1535: */
1.212 schwarze 1536: static int
1.177 schwarze 1537: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1538: {
1539: size_t sz;
1540: const char *start;
1.51 schwarze 1541: char *p;
1542: int isz;
1.42 schwarze 1543: enum mandoc_esc esc;
1544:
1.147 schwarze 1545: /* Spring the input line trap. */
1546:
1547: if (roffit_lines == 1) {
1548: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1549: free(buf->buf);
1550: buf->buf = p;
1551: buf->sz = isz + 1;
1552: *offs = 0;
1553: free(roffit_macro);
1554: roffit_lines = 0;
1.149 schwarze 1555: return ROFF_REPARSE;
1.147 schwarze 1556: } else if (roffit_lines > 1)
1557: --roffit_lines;
1558:
1.177 schwarze 1559: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1560: if (roffce_lines < 1) {
1561: r->man->last = roffce_node;
1562: r->man->next = ROFF_NEXT_SIBLING;
1563: roffce_lines = 0;
1564: roffce_node = NULL;
1565: } else
1566: roffce_lines--;
1567: }
1568:
1.147 schwarze 1569: /* Convert all breakable hyphens into ASCII_HYPH. */
1570:
1.110 schwarze 1571: start = p = buf->buf + pos;
1.42 schwarze 1572:
1.110 schwarze 1573: while (*p != '\0') {
1.42 schwarze 1574: sz = strcspn(p, "-\\");
1575: p += sz;
1576:
1.110 schwarze 1577: if (*p == '\0')
1.42 schwarze 1578: break;
1579:
1.110 schwarze 1580: if (*p == '\\') {
1.42 schwarze 1581: /* Skip over escapes. */
1582: p++;
1.62 schwarze 1583: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1584: if (esc == ESCAPE_ERROR)
1.42 schwarze 1585: break;
1.136 schwarze 1586: while (*p == '-')
1587: p++;
1.42 schwarze 1588: continue;
1589: } else if (p == start) {
1590: p++;
1591: continue;
1592: }
1593:
1.44 schwarze 1594: if (isalpha((unsigned char)p[-1]) &&
1595: isalpha((unsigned char)p[1]))
1.42 schwarze 1596: *p = ASCII_HYPH;
1597: p++;
1.8 schwarze 1598: }
1.149 schwarze 1599: return ROFF_CONT;
1.8 schwarze 1600: }
1601:
1.212 schwarze 1602: int
1.110 schwarze 1603: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1604: {
1.166 schwarze 1605: enum roff_tok t;
1.212 schwarze 1606: int e;
1.110 schwarze 1607: int pos; /* parse point */
1.115 schwarze 1608: int spos; /* saved parse point for messages */
1.110 schwarze 1609: int ppos; /* original offset in buf->buf */
1610: int ctl; /* macro line (boolean) */
1611:
1612: ppos = pos = *offs;
1.1 schwarze 1613:
1.102 schwarze 1614: /* Handle in-line equation delimiters. */
1615:
1.108 schwarze 1616: if (r->tbl == NULL &&
1617: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1618: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1619: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1620: if (e == ROFF_REPARSE)
1.149 schwarze 1621: return e;
1.102 schwarze 1622: assert(e == ROFF_CONT);
1623: }
1624:
1625: /* Expand some escape sequences. */
1.8 schwarze 1626:
1.110 schwarze 1627: e = roff_res(r, buf, ln, pos);
1.212 schwarze 1628: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1629: return e;
1.110 schwarze 1630: assert(e == ROFF_CONT);
1.8 schwarze 1631:
1.110 schwarze 1632: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1633:
1.8 schwarze 1634: /*
1.2 schwarze 1635: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1636: * text through the macro's filter.
1637: * Equations process all content themselves.
1638: * Tables process almost all content themselves, but we want
1639: * to warn about macros before passing it there.
1.2 schwarze 1640: */
1641:
1.124 schwarze 1642: if (r->last != NULL && ! ctl) {
1.2 schwarze 1643: t = r->last->tok;
1.110 schwarze 1644: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.212 schwarze 1645: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1646: return e;
1.212 schwarze 1647: e &= ~ROFF_MASK;
1648: } else
1649: e = ROFF_IGN;
1.191 schwarze 1650: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1651: eqn_read(r->eqn, buf->buf + ppos);
1.212 schwarze 1652: return e;
1.191 schwarze 1653: }
1.193 schwarze 1654: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1655: tbl_read(r->tbl, ln, buf->buf, ppos);
1.218 schwarze 1656: roff_addtbl(r->man, ln, r->tbl);
1.212 schwarze 1657: return e;
1.193 schwarze 1658: }
1.124 schwarze 1659: if ( ! ctl)
1.212 schwarze 1660: return roff_parsetext(r, buf, pos, offs) | e;
1.100 schwarze 1661:
1662: /* Skip empty request lines. */
1663:
1.110 schwarze 1664: if (buf->buf[pos] == '"') {
1.100 schwarze 1665: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1666: ln, pos, NULL);
1.149 schwarze 1667: return ROFF_IGN;
1.110 schwarze 1668: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1669: return ROFF_IGN;
1.2 schwarze 1670:
1671: /*
1672: * If a scope is open, go to the child handler for that macro,
1673: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1674: * Don't do so if an equation is open.
1.2 schwarze 1675: */
1676:
1677: if (r->last) {
1.1 schwarze 1678: t = r->last->tok;
1.149 schwarze 1679: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1680: }
1681:
1.115 schwarze 1682: /* No scope is open. This is a new request or macro. */
1683:
1684: spos = pos;
1685: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1686:
1687: /* Tables ignore most macros. */
1688:
1.180 schwarze 1689: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1690: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.115 schwarze 1691: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1692: ln, pos, buf->buf + spos);
1.180 schwarze 1693: if (t != TOKEN_NONE)
1.149 schwarze 1694: return ROFF_IGN;
1.129 schwarze 1695: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1696: pos++;
1.163 schwarze 1697: while (buf->buf[pos] == ' ')
1.129 schwarze 1698: pos++;
1.193 schwarze 1699: tbl_read(r->tbl, ln, buf->buf, pos);
1.218 schwarze 1700: roff_addtbl(r->man, ln, r->tbl);
1.193 schwarze 1701: return ROFF_IGN;
1.115 schwarze 1702: }
1703:
1.177 schwarze 1704: /* For now, let high level macros abort .ce mode. */
1705:
1706: if (ctl && roffce_node != NULL &&
1.196 schwarze 1707: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1708: t == ROFF_TH || t == ROFF_TS)) {
1.177 schwarze 1709: r->man->last = roffce_node;
1710: r->man->next = ROFF_NEXT_SIBLING;
1711: roffce_lines = 0;
1712: roffce_node = NULL;
1713: }
1714:
1.2 schwarze 1715: /*
1.115 schwarze 1716: * This is neither a roff request nor a user-defined macro.
1717: * Let the standard macro set parsers handle it.
1.2 schwarze 1718: */
1719:
1.166 schwarze 1720: if (t == TOKEN_NONE)
1.149 schwarze 1721: return ROFF_CONT;
1.115 schwarze 1722:
1723: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1724:
1.168 schwarze 1725: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1726: }
1727:
1.211 schwarze 1728: /*
1729: * Internal interface function to tell the roff parser that execution
1730: * of the current macro ended. This is required because macro
1731: * definitions usually do not end with a .return request.
1732: */
1733: void
1734: roff_userret(struct roff *r)
1735: {
1736: struct mctx *ctx;
1737: int i;
1738:
1739: assert(r->mstackpos >= 0);
1740: ctx = r->mstack + r->mstackpos;
1741: for (i = 0; i < ctx->argc; i++)
1742: free(ctx->argv[i]);
1743: ctx->argc = 0;
1744: r->mstackpos--;
1745: }
1746:
1.27 schwarze 1747: void
1.2 schwarze 1748: roff_endparse(struct roff *r)
1749: {
1.193 schwarze 1750: if (r->last != NULL)
1.94 schwarze 1751: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1752: r->last->line, r->last->col,
1.167 schwarze 1753: roff_name[r->last->tok]);
1.27 schwarze 1754:
1.193 schwarze 1755: if (r->eqn != NULL) {
1.94 schwarze 1756: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.191 schwarze 1757: r->eqn->node->line, r->eqn->node->pos, "EQ");
1758: eqn_parse(r->eqn);
1759: r->eqn = NULL;
1.32 schwarze 1760: }
1761:
1.193 schwarze 1762: if (r->tbl != NULL) {
1.218 schwarze 1763: tbl_end(r->tbl, 1);
1.193 schwarze 1764: r->tbl = NULL;
1.27 schwarze 1765: }
1.1 schwarze 1766: }
1767:
1768: /*
1769: * Parse a roff node's type from the input buffer. This must be in the
1770: * form of ".foo xxx" in the usual way.
1771: */
1.166 schwarze 1772: static enum roff_tok
1.87 schwarze 1773: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1774: {
1.87 schwarze 1775: char *cp;
1.16 schwarze 1776: const char *mac;
1777: size_t maclen;
1.187 schwarze 1778: int deftype;
1.166 schwarze 1779: enum roff_tok t;
1.1 schwarze 1780:
1.87 schwarze 1781: cp = buf + *pos;
1782:
1783: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1784: return TOKEN_NONE;
1.1 schwarze 1785:
1.87 schwarze 1786: mac = cp;
1787: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1788:
1.187 schwarze 1789: deftype = ROFFDEF_USER | ROFFDEF_REN;
1790: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1791: switch (deftype) {
1792: case ROFFDEF_USER:
1793: t = ROFF_USERDEF;
1794: break;
1795: case ROFFDEF_REN:
1796: t = ROFF_RENAMED;
1797: break;
1798: default:
1799: t = roffhash_find(r->reqtab, mac, maclen);
1800: break;
1801: }
1.166 schwarze 1802: if (t != TOKEN_NONE)
1.87 schwarze 1803: *pos = cp - buf;
1.197 schwarze 1804: else if (deftype == ROFFDEF_UNDEF) {
1805: /* Using an undefined macro defines it to be empty. */
1806: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1807: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1808: }
1.149 schwarze 1809: return t;
1.1 schwarze 1810: }
1811:
1.138 schwarze 1812: /* --- handling of request blocks ----------------------------------------- */
1813:
1.212 schwarze 1814: static int
1.2 schwarze 1815: roff_cblock(ROFF_ARGS)
1.1 schwarze 1816: {
1817:
1.2 schwarze 1818: /*
1819: * A block-close `..' should only be invoked as a child of an
1820: * ignore macro, otherwise raise a warning and just ignore it.
1821: */
1822:
1.110 schwarze 1823: if (r->last == NULL) {
1.94 schwarze 1824: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1825: ln, ppos, "..");
1.149 schwarze 1826: return ROFF_IGN;
1.2 schwarze 1827: }
1.1 schwarze 1828:
1.2 schwarze 1829: switch (r->last->tok) {
1.80 schwarze 1830: case ROFF_am:
1.93 schwarze 1831: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1832: case ROFF_ami:
1833: case ROFF_de:
1.23 schwarze 1834: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1835: case ROFF_dei:
1836: case ROFF_ig:
1.2 schwarze 1837: break;
1838: default:
1.94 schwarze 1839: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1840: ln, ppos, "..");
1.149 schwarze 1841: return ROFF_IGN;
1.2 schwarze 1842: }
1843:
1.110 schwarze 1844: if (buf->buf[pos] != '\0')
1.90 schwarze 1845: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1846: ".. %s", buf->buf + pos);
1.2 schwarze 1847:
1848: roffnode_pop(r);
1849: roffnode_cleanscope(r);
1.149 schwarze 1850: return ROFF_IGN;
1.2 schwarze 1851:
1852: }
1.1 schwarze 1853:
1.212 schwarze 1854: static int
1.2 schwarze 1855: roffnode_cleanscope(struct roff *r)
1856: {
1.212 schwarze 1857: int inloop;
1.1 schwarze 1858:
1.212 schwarze 1859: inloop = 0;
1860: while (r->last != NULL) {
1.46 schwarze 1861: if (--r->last->endspan != 0)
1.2 schwarze 1862: break;
1.212 schwarze 1863: inloop += roffnode_pop(r);
1.2 schwarze 1864: }
1.212 schwarze 1865: return inloop;
1.2 schwarze 1866: }
1.1 schwarze 1867:
1.212 schwarze 1868: static int
1.68 schwarze 1869: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1870: {
1871: if (NULL == r->last) {
1.94 schwarze 1872: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1873: ln, ppos, "\\}");
1.212 schwarze 1874: return 0;
1.2 schwarze 1875: }
1.1 schwarze 1876:
1.2 schwarze 1877: switch (r->last->tok) {
1.80 schwarze 1878: case ROFF_el:
1879: case ROFF_ie:
1880: case ROFF_if:
1.212 schwarze 1881: case ROFF_while:
1.2 schwarze 1882: break;
1883: default:
1.94 schwarze 1884: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1885: ln, ppos, "\\}");
1.212 schwarze 1886: return 0;
1.2 schwarze 1887: }
1.1 schwarze 1888:
1.2 schwarze 1889: if (r->last->endspan > -1) {
1.94 schwarze 1890: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1891: ln, ppos, "\\}");
1.212 schwarze 1892: return 0;
1.2 schwarze 1893: }
1894:
1.212 schwarze 1895: return roffnode_pop(r) + roffnode_cleanscope(r);
1.1 schwarze 1896: }
1897:
1.212 schwarze 1898: static int
1.2 schwarze 1899: roff_block(ROFF_ARGS)
1.1 schwarze 1900: {
1.187 schwarze 1901: const char *name, *value;
1902: char *call, *cp, *iname, *rname;
1903: size_t csz, namesz, rsz;
1904: int deftype;
1.16 schwarze 1905:
1.93 schwarze 1906: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1907:
1.110 schwarze 1908: if (tok == ROFF_de1)
1.93 schwarze 1909: tok = ROFF_de;
1.123 schwarze 1910: else if (tok == ROFF_dei1)
1911: tok = ROFF_dei;
1.110 schwarze 1912: else if (tok == ROFF_am1)
1.93 schwarze 1913: tok = ROFF_am;
1.123 schwarze 1914: else if (tok == ROFF_ami1)
1915: tok = ROFF_ami;
1.93 schwarze 1916:
1917: /* Parse the macro name argument. */
1918:
1.110 schwarze 1919: cp = buf->buf + pos;
1920: if (tok == ROFF_ig) {
1.93 schwarze 1921: iname = NULL;
1922: namesz = 0;
1923: } else {
1924: iname = cp;
1925: namesz = roff_getname(r, &cp, ln, ppos);
1926: iname[namesz] = '\0';
1927: }
1.22 schwarze 1928:
1.93 schwarze 1929: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1930:
1.110 schwarze 1931: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1932: deftype = ROFFDEF_USER;
1933: name = roff_getstrn(r, iname, namesz, &deftype);
1934: if (name == NULL) {
1.93 schwarze 1935: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1936: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1937: "%.*s", (int)namesz, iname);
1938: namesz = 0;
1939: } else
1940: namesz = strlen(name);
1941: } else
1942: name = iname;
1.22 schwarze 1943:
1.110 schwarze 1944: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1945: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1946: ln, ppos, roff_name[tok]);
1.149 schwarze 1947: return ROFF_IGN;
1.93 schwarze 1948: }
1.2 schwarze 1949:
1.16 schwarze 1950: roffnode_push(r, tok, name, ln, ppos);
1951:
1952: /*
1953: * At the beginning of a `de' macro, clear the existing string
1954: * with the same name, if there is one. New content will be
1.66 schwarze 1955: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1956: */
1.22 schwarze 1957:
1.183 schwarze 1958: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 1959: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 1960: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 1961: } else if (tok == ROFF_am || tok == ROFF_ami) {
1962: deftype = ROFFDEF_ANY;
1963: value = roff_getstrn(r, iname, namesz, &deftype);
1964: switch (deftype) { /* Before appending, ... */
1965: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1966: roff_setstrn(&r->strtab, name, namesz,
1967: value, strlen(value), 0);
1968: break;
1969: case ROFFDEF_REN: /* call original standard macro. */
1970: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1971: (int)strlen(value), value);
1972: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1973: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1974: free(call);
1975: break;
1976: case ROFFDEF_STD: /* rename and call standard macro. */
1977: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1978: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1979: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1980: (int)rsz, rname);
1981: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1982: free(call);
1983: free(rname);
1984: break;
1985: default:
1986: break;
1987: }
1.183 schwarze 1988: }
1.2 schwarze 1989:
1.110 schwarze 1990: if (*cp == '\0')
1.149 schwarze 1991: return ROFF_IGN;
1.1 schwarze 1992:
1.93 schwarze 1993: /* Get the custom end marker. */
1.22 schwarze 1994:
1.93 schwarze 1995: iname = cp;
1.86 schwarze 1996: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1997:
1998: /* Resolve the end marker if it is indirect. */
1999:
1.110 schwarze 2000: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2001: deftype = ROFFDEF_USER;
2002: name = roff_getstrn(r, iname, namesz, &deftype);
2003: if (name == NULL) {
1.93 schwarze 2004: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 2005: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 2006: "%.*s", (int)namesz, iname);
2007: namesz = 0;
2008: } else
2009: namesz = strlen(name);
2010: } else
2011: name = iname;
2012:
1.86 schwarze 2013: if (namesz)
2014: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 2015:
1.110 schwarze 2016: if (*cp != '\0')
1.90 schwarze 2017: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 2018: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 2019:
1.149 schwarze 2020: return ROFF_IGN;
1.1 schwarze 2021: }
2022:
1.212 schwarze 2023: static int
1.2 schwarze 2024: roff_block_sub(ROFF_ARGS)
1.1 schwarze 2025: {
1.166 schwarze 2026: enum roff_tok t;
1.2 schwarze 2027: int i, j;
2028:
2029: /*
2030: * First check whether a custom macro exists at this level. If
2031: * it does, then check against it. This is some of groff's
2032: * stranger behaviours. If we encountered a custom end-scope
2033: * tag and that tag also happens to be a "real" macro, then we
2034: * need to try interpreting it again as a real macro. If it's
2035: * not, then return ignore. Else continue.
2036: */
2037:
2038: if (r->last->end) {
1.35 schwarze 2039: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 2040: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 2041: break;
1.1 schwarze 2042:
1.110 schwarze 2043: if (r->last->end[j] == '\0' &&
2044: (buf->buf[i] == '\0' ||
2045: buf->buf[i] == ' ' ||
2046: buf->buf[i] == '\t')) {
1.2 schwarze 2047: roffnode_pop(r);
2048: roffnode_cleanscope(r);
1.1 schwarze 2049:
1.110 schwarze 2050: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 2051: i++;
2052:
2053: pos = i;
1.110 schwarze 2054: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 2055: TOKEN_NONE)
1.149 schwarze 2056: return ROFF_RERUN;
2057: return ROFF_IGN;
1.2 schwarze 2058: }
1.1 schwarze 2059: }
2060:
1.2 schwarze 2061: /*
2062: * If we have no custom end-query or lookup failed, then try
2063: * pulling it out of the hashtable.
2064: */
1.1 schwarze 2065:
1.110 schwarze 2066: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 2067:
1.110 schwarze 2068: if (t != ROFF_cblock) {
2069: if (tok != ROFF_ig)
2070: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 2071: return ROFF_IGN;
1.16 schwarze 2072: }
1.1 schwarze 2073:
1.149 schwarze 2074: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 2075: }
2076:
1.212 schwarze 2077: static int
1.2 schwarze 2078: roff_block_text(ROFF_ARGS)
2079: {
2080:
1.110 schwarze 2081: if (tok != ROFF_ig)
2082: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 2083:
1.149 schwarze 2084: return ROFF_IGN;
1.2 schwarze 2085: }
2086:
1.212 schwarze 2087: static int
1.2 schwarze 2088: roff_cond_sub(ROFF_ARGS)
2089: {
1.212 schwarze 2090: char *ep;
2091: int endloop, irc, rr;
1.166 schwarze 2092: enum roff_tok t;
1.2 schwarze 2093:
1.212 schwarze 2094: irc = ROFF_IGN;
1.2 schwarze 2095: rr = r->last->rule;
1.212 schwarze 2096: endloop = tok != ROFF_while ? ROFF_IGN :
2097: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2098: if (roffnode_cleanscope(r))
2099: irc |= endloop;
1.39 schwarze 2100:
1.69 schwarze 2101: /*
2102: * If `\}' occurs on a macro line without a preceding macro,
2103: * drop the line completely.
2104: */
2105:
1.110 schwarze 2106: ep = buf->buf + pos;
2107: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 2108: rr = 0;
1.69 schwarze 2109:
1.215 schwarze 2110: /*
2111: * The closing delimiter `\}' rewinds the conditional scope
2112: * but is otherwise ignored when interpreting the line.
2113: */
1.39 schwarze 2114:
1.110 schwarze 2115: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 2116: switch (ep[1]) {
2117: case '}':
2118: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.212 schwarze 2119: if (roff_ccond(r, ln, ep - buf->buf))
2120: irc |= endloop;
1.190 schwarze 2121: break;
2122: case '\0':
2123: ++ep;
2124: break;
2125: default:
2126: ep += 2;
2127: break;
1.70 schwarze 2128: }
1.50 schwarze 2129: }
1.190 schwarze 2130:
2131: /*
2132: * Fully handle known macros when they are structurally
2133: * required or when the conditional evaluated to true.
2134: */
2135:
2136: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.212 schwarze 2137: irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
2138: (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
2139: rr ? ROFF_CONT : ROFF_IGN;
2140: return irc;
1.2 schwarze 2141: }
2142:
1.212 schwarze 2143: static int
1.2 schwarze 2144: roff_cond_text(ROFF_ARGS)
2145: {
1.37 schwarze 2146: char *ep;
1.212 schwarze 2147: int endloop, irc, rr;
1.2 schwarze 2148:
1.212 schwarze 2149: irc = ROFF_IGN;
1.2 schwarze 2150: rr = r->last->rule;
1.212 schwarze 2151: endloop = tok != ROFF_while ? ROFF_IGN :
2152: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2153: if (roffnode_cleanscope(r))
2154: irc |= endloop;
1.1 schwarze 2155:
1.215 schwarze 2156: /*
2157: * If `\}' occurs on a text line with neither preceding
2158: * nor following characters, drop the line completely.
2159: */
2160:
1.110 schwarze 2161: ep = buf->buf + pos;
1.215 schwarze 2162: if (strcmp(ep, "\\}") == 0)
2163: rr = 0;
2164:
2165: /*
2166: * The closing delimiter `\}' rewinds the conditional scope
2167: * but is otherwise ignored when interpreting the line.
2168: */
2169:
1.110 schwarze 2170: while ((ep = strchr(ep, '\\')) != NULL) {
1.215 schwarze 2171: switch (ep[1]) {
2172: case '}':
2173: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2174: if (roff_ccond(r, ln, ep - buf->buf))
1.212 schwarze 2175: irc |= endloop;
1.215 schwarze 2176: break;
2177: case '\0':
2178: ++ep;
2179: break;
2180: default:
2181: ep += 2;
2182: break;
1.70 schwarze 2183: }
1.2 schwarze 2184: }
1.212 schwarze 2185: if (rr)
2186: irc |= ROFF_CONT;
2187: return irc;
1.2 schwarze 2188: }
2189:
1.138 schwarze 2190: /* --- handling of numeric and conditional expressions -------------------- */
2191:
1.77 schwarze 2192: /*
2193: * Parse a single signed integer number. Stop at the first non-digit.
2194: * If there is at least one digit, return success and advance the
2195: * parse point, else return failure and let the parse point unchanged.
2196: * Ignore overflows, treat them just like the C language.
2197: */
1.56 schwarze 2198: static int
1.133 schwarze 2199: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2200: {
1.133 schwarze 2201: int myres, scaled, n, p;
1.79 schwarze 2202:
2203: if (NULL == res)
2204: res = &myres;
1.56 schwarze 2205:
2206: p = *pos;
2207: n = v[p] == '-';
1.133 schwarze 2208: if (n || v[p] == '+')
1.56 schwarze 2209: p++;
2210:
1.133 schwarze 2211: if (flags & ROFFNUM_WHITE)
2212: while (isspace((unsigned char)v[p]))
2213: p++;
2214:
1.56 schwarze 2215: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2216: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2217: if (p == *pos + n)
2218: return 0;
2219:
2220: if (n)
2221: *res = -*res;
2222:
1.126 schwarze 2223: /* Each number may be followed by one optional scaling unit. */
2224:
2225: switch (v[p]) {
2226: case 'f':
1.133 schwarze 2227: scaled = *res * 65536;
1.126 schwarze 2228: break;
2229: case 'i':
1.133 schwarze 2230: scaled = *res * 240;
1.126 schwarze 2231: break;
2232: case 'c':
1.133 schwarze 2233: scaled = *res * 240 / 2.54;
1.126 schwarze 2234: break;
2235: case 'v':
2236: case 'P':
1.133 schwarze 2237: scaled = *res * 40;
1.126 schwarze 2238: break;
2239: case 'm':
2240: case 'n':
1.133 schwarze 2241: scaled = *res * 24;
1.126 schwarze 2242: break;
2243: case 'p':
1.133 schwarze 2244: scaled = *res * 10 / 3;
1.126 schwarze 2245: break;
2246: case 'u':
1.133 schwarze 2247: scaled = *res;
1.126 schwarze 2248: break;
2249: case 'M':
1.133 schwarze 2250: scaled = *res * 6 / 25;
1.126 schwarze 2251: break;
2252: default:
1.133 schwarze 2253: scaled = *res;
1.126 schwarze 2254: p--;
2255: break;
2256: }
1.133 schwarze 2257: if (flags & ROFFNUM_SCALE)
2258: *res = scaled;
1.126 schwarze 2259:
2260: *pos = p + 1;
1.149 schwarze 2261: return 1;
1.56 schwarze 2262: }
2263:
1.71 schwarze 2264: /*
2265: * Evaluate a string comparison condition.
2266: * The first character is the delimiter.
2267: * Succeed if the string up to its second occurrence
2268: * matches the string up to its third occurence.
2269: * Advance the cursor after the third occurrence
2270: * or lacking that, to the end of the line.
2271: */
2272: static int
2273: roff_evalstrcond(const char *v, int *pos)
2274: {
2275: const char *s1, *s2, *s3;
2276: int match;
2277:
2278: match = 0;
2279: s1 = v + *pos; /* initial delimiter */
2280: s2 = s1 + 1; /* for scanning the first string */
2281: s3 = strchr(s2, *s1); /* for scanning the second string */
2282:
2283: if (NULL == s3) /* found no middle delimiter */
2284: goto out;
2285:
2286: while ('\0' != *++s3) {
2287: if (*s2 != *s3) { /* mismatch */
2288: s3 = strchr(s3, *s1);
2289: break;
2290: }
2291: if (*s3 == *s1) { /* found the final delimiter */
2292: match = 1;
2293: break;
2294: }
2295: s2++;
2296: }
2297:
2298: out:
2299: if (NULL == s3)
2300: s3 = strchr(s2, '\0');
1.114 schwarze 2301: else if (*s3 != '\0')
1.71 schwarze 2302: s3++;
2303: *pos = s3 - v;
1.149 schwarze 2304: return match;
1.71 schwarze 2305: }
2306:
1.77 schwarze 2307: /*
2308: * Evaluate an optionally negated single character, numerical,
2309: * or string condition.
2310: */
1.71 schwarze 2311: static int
1.143 schwarze 2312: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2313: {
1.208 schwarze 2314: const char *start, *end;
2315: char *cp, *name;
2316: size_t sz;
2317: int deftype, len, number, savepos, istrue, wanttrue;
1.5 schwarze 2318:
1.71 schwarze 2319: if ('!' == v[*pos]) {
2320: wanttrue = 0;
2321: (*pos)++;
2322: } else
2323: wanttrue = 1;
2324:
1.5 schwarze 2325: switch (v[*pos]) {
1.112 schwarze 2326: case '\0':
1.149 schwarze 2327: return 0;
1.80 schwarze 2328: case 'n':
2329: case 'o':
1.5 schwarze 2330: (*pos)++;
1.149 schwarze 2331: return wanttrue;
1.80 schwarze 2332: case 'e':
2333: case 't':
1.111 schwarze 2334: case 'v':
1.5 schwarze 2335: (*pos)++;
1.149 schwarze 2336: return !wanttrue;
1.208 schwarze 2337: case 'c':
2338: do {
2339: (*pos)++;
2340: } while (v[*pos] == ' ');
2341:
2342: /*
2343: * Quirk for groff compatibility:
2344: * The horizontal tab is neither available nor unavailable.
2345: */
2346:
2347: if (v[*pos] == '\t') {
2348: (*pos)++;
2349: return 0;
2350: }
2351:
2352: /* Printable ASCII characters are available. */
2353:
2354: if (v[*pos] != '\\') {
2355: (*pos)++;
2356: return wanttrue;
2357: }
2358:
2359: end = v + ++*pos;
2360: switch (mandoc_escape(&end, &start, &len)) {
2361: case ESCAPE_SPECIAL:
2362: istrue = mchars_spec2cp(start, len) != -1;
2363: break;
2364: case ESCAPE_UNICODE:
2365: istrue = 1;
2366: break;
2367: case ESCAPE_NUMBERED:
2368: istrue = mchars_num2char(start, len) != -1;
2369: break;
2370: default:
2371: istrue = !wanttrue;
2372: break;
2373: }
2374: *pos = end - v;
2375: return istrue == wanttrue;
1.182 schwarze 2376: case 'd':
1.143 schwarze 2377: case 'r':
1.182 schwarze 2378: cp = v + *pos + 1;
2379: while (*cp == ' ')
2380: cp++;
2381: name = cp;
2382: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2383: if (sz == 0)
2384: istrue = 0;
2385: else if (v[*pos] == 'r')
2386: istrue = roff_hasregn(r, name, sz);
2387: else {
2388: deftype = ROFFDEF_ANY;
2389: roff_getstrn(r, name, sz, &deftype);
2390: istrue = !!deftype;
2391: }
1.143 schwarze 2392: *pos = cp - v;
1.182 schwarze 2393: return istrue == wanttrue;
1.5 schwarze 2394: default:
2395: break;
2396: }
2397:
1.113 schwarze 2398: savepos = *pos;
1.133 schwarze 2399: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2400: return (number > 0) == wanttrue;
1.113 schwarze 2401: else if (*pos == savepos)
1.149 schwarze 2402: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2403: else
1.149 schwarze 2404: return 0;
1.5 schwarze 2405: }
2406:
1.212 schwarze 2407: static int
1.21 schwarze 2408: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2409: {
1.30 schwarze 2410:
1.149 schwarze 2411: return ROFF_IGN;
1.21 schwarze 2412: }
2413:
1.212 schwarze 2414: static int
1.123 schwarze 2415: roff_insec(ROFF_ARGS)
2416: {
2417:
2418: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2419: ln, ppos, roff_name[tok]);
1.149 schwarze 2420: return ROFF_IGN;
1.123 schwarze 2421: }
2422:
1.212 schwarze 2423: static int
1.123 schwarze 2424: roff_unsupp(ROFF_ARGS)
2425: {
2426:
2427: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2428: ln, ppos, roff_name[tok]);
1.149 schwarze 2429: return ROFF_IGN;
1.123 schwarze 2430: }
2431:
1.212 schwarze 2432: static int
1.2 schwarze 2433: roff_cond(ROFF_ARGS)
2434: {
1.212 schwarze 2435: int irc;
1.46 schwarze 2436:
2437: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2438:
1.80 schwarze 2439: /*
1.35 schwarze 2440: * An `.el' has no conditional body: it will consume the value
2441: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2442: * defaults to DENY.
1.35 schwarze 2443: *
2444: * If we're not an `el', however, then evaluate the conditional.
2445: */
1.1 schwarze 2446:
1.110 schwarze 2447: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2448: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2449: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2450:
1.35 schwarze 2451: /*
2452: * An if-else will put the NEGATION of the current evaluated
2453: * conditional into the stack of rules.
2454: */
2455:
1.110 schwarze 2456: if (tok == ROFF_ie) {
1.96 schwarze 2457: if (r->rstackpos + 1 == r->rstacksz) {
2458: r->rstacksz += 16;
2459: r->rstack = mandoc_reallocarray(r->rstack,
2460: r->rstacksz, sizeof(int));
1.35 schwarze 2461: }
1.71 schwarze 2462: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2463: }
1.5 schwarze 2464:
2465: /* If the parent has false as its rule, then so do we. */
2466:
1.71 schwarze 2467: if (r->last->parent && !r->last->parent->rule)
2468: r->last->rule = 0;
1.5 schwarze 2469:
2470: /*
1.46 schwarze 2471: * Determine scope.
2472: * If there is nothing on the line after the conditional,
2473: * not even whitespace, use next-line scope.
1.212 schwarze 2474: * Except that .while does not support next-line scope.
1.5 schwarze 2475: */
1.2 schwarze 2476:
1.212 schwarze 2477: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.46 schwarze 2478: r->last->endspan = 2;
2479: goto out;
2480: }
2481:
1.110 schwarze 2482: while (buf->buf[pos] == ' ')
1.46 schwarze 2483: pos++;
2484:
2485: /* An opening brace requests multiline scope. */
1.2 schwarze 2486:
1.110 schwarze 2487: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2488: r->last->endspan = -1;
2489: pos += 2;
1.144 schwarze 2490: while (buf->buf[pos] == ' ')
2491: pos++;
1.46 schwarze 2492: goto out;
1.80 schwarze 2493: }
1.2 schwarze 2494:
2495: /*
1.46 schwarze 2496: * Anything else following the conditional causes
2497: * single-line scope. Warn if the scope contains
2498: * nothing but trailing whitespace.
1.2 schwarze 2499: */
2500:
1.110 schwarze 2501: if (buf->buf[pos] == '\0')
1.89 schwarze 2502: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2503: ln, ppos, roff_name[tok]);
1.2 schwarze 2504:
1.46 schwarze 2505: r->last->endspan = 1;
1.1 schwarze 2506:
1.46 schwarze 2507: out:
1.2 schwarze 2508: *offs = pos;
1.212 schwarze 2509: irc = ROFF_RERUN;
2510: if (tok == ROFF_while)
2511: irc |= ROFF_WHILE;
2512: return irc;
1.1 schwarze 2513: }
2514:
1.212 schwarze 2515: static int
1.7 schwarze 2516: roff_ds(ROFF_ARGS)
2517: {
1.85 schwarze 2518: char *string;
2519: const char *name;
2520: size_t namesz;
1.10 schwarze 2521:
1.123 schwarze 2522: /* Ignore groff compatibility mode for now. */
2523:
2524: if (tok == ROFF_ds1)
2525: tok = ROFF_ds;
2526: else if (tok == ROFF_as1)
2527: tok = ROFF_as;
2528:
1.10 schwarze 2529: /*
1.85 schwarze 2530: * The first word is the name of the string.
2531: * If it is empty or terminated by an escape sequence,
2532: * abort the `ds' request without defining anything.
1.10 schwarze 2533: */
1.7 schwarze 2534:
1.110 schwarze 2535: name = string = buf->buf + pos;
2536: if (*name == '\0')
1.149 schwarze 2537: return ROFF_IGN;
1.7 schwarze 2538:
1.85 schwarze 2539: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2540: if (name[namesz] == '\\')
1.149 schwarze 2541: return ROFF_IGN;
1.85 schwarze 2542:
2543: /* Read past the initial double-quote, if any. */
1.110 schwarze 2544: if (*string == '"')
1.7 schwarze 2545: string++;
2546:
1.10 schwarze 2547: /* The rest is the value. */
1.85 schwarze 2548: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2549: ROFF_as == tok);
1.183 schwarze 2550: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2551: return ROFF_IGN;
1.7 schwarze 2552: }
2553:
1.77 schwarze 2554: /*
2555: * Parse a single operator, one or two characters long.
2556: * If the operator is recognized, return success and advance the
2557: * parse point, else return failure and let the parse point unchanged.
2558: */
2559: static int
2560: roff_getop(const char *v, int *pos, char *res)
2561: {
2562:
2563: *res = v[*pos];
2564:
2565: switch (*res) {
1.80 schwarze 2566: case '+':
2567: case '-':
2568: case '*':
2569: case '/':
2570: case '%':
2571: case '&':
2572: case ':':
1.77 schwarze 2573: break;
2574: case '<':
2575: switch (v[*pos + 1]) {
1.80 schwarze 2576: case '=':
1.77 schwarze 2577: *res = 'l';
2578: (*pos)++;
2579: break;
1.80 schwarze 2580: case '>':
1.77 schwarze 2581: *res = '!';
2582: (*pos)++;
2583: break;
1.80 schwarze 2584: case '?':
1.77 schwarze 2585: *res = 'i';
2586: (*pos)++;
2587: break;
2588: default:
2589: break;
2590: }
2591: break;
2592: case '>':
2593: switch (v[*pos + 1]) {
1.80 schwarze 2594: case '=':
1.77 schwarze 2595: *res = 'g';
2596: (*pos)++;
2597: break;
1.80 schwarze 2598: case '?':
1.77 schwarze 2599: *res = 'a';
2600: (*pos)++;
2601: break;
2602: default:
2603: break;
2604: }
2605: break;
2606: case '=':
2607: if ('=' == v[*pos + 1])
2608: (*pos)++;
2609: break;
2610: default:
1.149 schwarze 2611: return 0;
1.77 schwarze 2612: }
2613: (*pos)++;
2614:
1.149 schwarze 2615: return *res;
1.77 schwarze 2616: }
2617:
2618: /*
2619: * Evaluate either a parenthesized numeric expression
2620: * or a single signed integer number.
2621: */
2622: static int
1.106 schwarze 2623: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2624: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2625: {
2626:
2627: if ('(' != v[*pos])
1.149 schwarze 2628: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2629:
2630: (*pos)++;
1.133 schwarze 2631: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2632: return 0;
1.77 schwarze 2633:
1.79 schwarze 2634: /*
2635: * Omission of the closing parenthesis
2636: * is an error in validation mode,
2637: * but ignored in evaluation mode.
2638: */
2639:
1.77 schwarze 2640: if (')' == v[*pos])
2641: (*pos)++;
1.79 schwarze 2642: else if (NULL == res)
1.149 schwarze 2643: return 0;
1.77 schwarze 2644:
1.149 schwarze 2645: return 1;
1.77 schwarze 2646: }
2647:
2648: /*
2649: * Evaluate a complete numeric expression.
2650: * Proceed left to right, there is no concept of precedence.
2651: */
2652: static int
1.106 schwarze 2653: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2654: int *pos, int *res, int flags)
1.77 schwarze 2655: {
2656: int mypos, operand2;
2657: char operator;
2658:
2659: if (NULL == pos) {
2660: mypos = 0;
2661: pos = &mypos;
2662: }
2663:
1.133 schwarze 2664: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2665: while (isspace((unsigned char)v[*pos]))
2666: (*pos)++;
2667:
1.133 schwarze 2668: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2669: return 0;
1.77 schwarze 2670:
2671: while (1) {
1.133 schwarze 2672: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2673: while (isspace((unsigned char)v[*pos]))
2674: (*pos)++;
2675:
2676: if ( ! roff_getop(v, pos, &operator))
2677: break;
2678:
1.133 schwarze 2679: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2680: while (isspace((unsigned char)v[*pos]))
2681: (*pos)++;
2682:
1.133 schwarze 2683: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2684: return 0;
1.77 schwarze 2685:
1.133 schwarze 2686: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2687: while (isspace((unsigned char)v[*pos]))
2688: (*pos)++;
1.79 schwarze 2689:
2690: if (NULL == res)
2691: continue;
1.77 schwarze 2692:
2693: switch (operator) {
1.80 schwarze 2694: case '+':
1.77 schwarze 2695: *res += operand2;
2696: break;
1.80 schwarze 2697: case '-':
1.77 schwarze 2698: *res -= operand2;
2699: break;
1.80 schwarze 2700: case '*':
1.77 schwarze 2701: *res *= operand2;
2702: break;
1.80 schwarze 2703: case '/':
1.116 schwarze 2704: if (operand2 == 0) {
1.106 schwarze 2705: mandoc_msg(MANDOCERR_DIVZERO,
2706: r->parse, ln, *pos, v);
2707: *res = 0;
2708: break;
2709: }
1.77 schwarze 2710: *res /= operand2;
2711: break;
1.80 schwarze 2712: case '%':
1.116 schwarze 2713: if (operand2 == 0) {
2714: mandoc_msg(MANDOCERR_DIVZERO,
2715: r->parse, ln, *pos, v);
2716: *res = 0;
2717: break;
2718: }
1.77 schwarze 2719: *res %= operand2;
2720: break;
1.80 schwarze 2721: case '<':
1.77 schwarze 2722: *res = *res < operand2;
2723: break;
1.80 schwarze 2724: case '>':
1.77 schwarze 2725: *res = *res > operand2;
2726: break;
1.80 schwarze 2727: case 'l':
1.77 schwarze 2728: *res = *res <= operand2;
2729: break;
1.80 schwarze 2730: case 'g':
1.77 schwarze 2731: *res = *res >= operand2;
2732: break;
1.80 schwarze 2733: case '=':
1.77 schwarze 2734: *res = *res == operand2;
2735: break;
1.80 schwarze 2736: case '!':
1.77 schwarze 2737: *res = *res != operand2;
2738: break;
1.80 schwarze 2739: case '&':
1.77 schwarze 2740: *res = *res && operand2;
2741: break;
1.80 schwarze 2742: case ':':
1.77 schwarze 2743: *res = *res || operand2;
2744: break;
1.80 schwarze 2745: case 'i':
1.77 schwarze 2746: if (operand2 < *res)
2747: *res = operand2;
2748: break;
1.80 schwarze 2749: case 'a':
1.77 schwarze 2750: if (operand2 > *res)
2751: *res = operand2;
2752: break;
2753: default:
2754: abort();
2755: }
2756: }
1.149 schwarze 2757: return 1;
1.77 schwarze 2758: }
2759:
1.138 schwarze 2760: /* --- register management ------------------------------------------------ */
2761:
1.52 schwarze 2762: void
1.60 schwarze 2763: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2764: {
1.199 schwarze 2765: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.198 schwarze 2766: }
2767:
2768: static void
2769: roff_setregn(struct roff *r, const char *name, size_t len,
1.199 schwarze 2770: int val, char sign, int step)
1.198 schwarze 2771: {
1.52 schwarze 2772: struct roffreg *reg;
2773:
2774: /* Search for an existing register with the same name. */
2775: reg = r->regtab;
2776:
1.198 schwarze 2777: while (reg != NULL && (reg->key.sz != len ||
2778: strncmp(reg->key.p, name, len) != 0))
1.52 schwarze 2779: reg = reg->next;
1.41 schwarze 2780:
1.52 schwarze 2781: if (NULL == reg) {
2782: /* Create a new register. */
2783: reg = mandoc_malloc(sizeof(struct roffreg));
1.198 schwarze 2784: reg->key.p = mandoc_strndup(name, len);
2785: reg->key.sz = len;
1.60 schwarze 2786: reg->val = 0;
1.199 schwarze 2787: reg->step = 0;
1.52 schwarze 2788: reg->next = r->regtab;
2789: r->regtab = reg;
2790: }
2791:
1.60 schwarze 2792: if ('+' == sign)
2793: reg->val += val;
2794: else if ('-' == sign)
2795: reg->val -= val;
2796: else
2797: reg->val = val;
1.199 schwarze 2798: if (step != INT_MIN)
2799: reg->step = step;
1.41 schwarze 2800: }
2801:
1.65 schwarze 2802: /*
2803: * Handle some predefined read-only number registers.
2804: * For now, return -1 if the requested register is not predefined;
2805: * in case a predefined read-only register having the value -1
2806: * were to turn up, another special value would have to be chosen.
2807: */
2808: static int
1.145 schwarze 2809: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2810: {
2811:
2812: switch (*name) {
1.145 schwarze 2813: case '$': /* Number of arguments of the last macro evaluated. */
1.211 schwarze 2814: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.80 schwarze 2815: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2816: return 0;
1.80 schwarze 2817: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2818: return 1;
1.80 schwarze 2819: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2820: return 24;
1.80 schwarze 2821: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2822: return 0;
1.80 schwarze 2823: case 'T': /* Some output device is always defined. */
1.149 schwarze 2824: return 1;
1.80 schwarze 2825: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2826: return 40;
1.65 schwarze 2827: default:
1.149 schwarze 2828: return -1;
1.65 schwarze 2829: }
2830: }
2831:
1.53 schwarze 2832: int
1.198 schwarze 2833: roff_getreg(struct roff *r, const char *name)
1.41 schwarze 2834: {
1.199 schwarze 2835: return roff_getregn(r, name, strlen(name), '\0');
1.53 schwarze 2836: }
2837:
2838: static int
1.199 schwarze 2839: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.53 schwarze 2840: {
2841: struct roffreg *reg;
1.65 schwarze 2842: int val;
2843:
2844: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2845: val = roff_getregro(r, name + 1);
1.65 schwarze 2846: if (-1 != val)
1.149 schwarze 2847: return val;
1.65 schwarze 2848: }
1.53 schwarze 2849:
1.199 schwarze 2850: for (reg = r->regtab; reg; reg = reg->next) {
1.53 schwarze 2851: if (len == reg->key.sz &&
1.199 schwarze 2852: 0 == strncmp(name, reg->key.p, len)) {
2853: switch (sign) {
2854: case '+':
2855: reg->val += reg->step;
2856: break;
2857: case '-':
2858: reg->val -= reg->step;
2859: break;
2860: default:
2861: break;
2862: }
1.149 schwarze 2863: return reg->val;
1.199 schwarze 2864: }
2865: }
1.143 schwarze 2866:
1.199 schwarze 2867: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.149 schwarze 2868: return 0;
1.143 schwarze 2869: }
2870:
2871: static int
2872: roff_hasregn(const struct roff *r, const char *name, size_t len)
2873: {
2874: struct roffreg *reg;
2875: int val;
2876:
2877: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2878: val = roff_getregro(r, name + 1);
1.143 schwarze 2879: if (-1 != val)
1.149 schwarze 2880: return 1;
1.143 schwarze 2881: }
2882:
2883: for (reg = r->regtab; reg; reg = reg->next)
2884: if (len == reg->key.sz &&
2885: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2886: return 1;
1.41 schwarze 2887:
1.149 schwarze 2888: return 0;
1.41 schwarze 2889: }
2890:
1.52 schwarze 2891: static void
2892: roff_freereg(struct roffreg *reg)
1.41 schwarze 2893: {
1.52 schwarze 2894: struct roffreg *old_reg;
1.41 schwarze 2895:
1.52 schwarze 2896: while (NULL != reg) {
2897: free(reg->key.p);
2898: old_reg = reg;
2899: reg = reg->next;
2900: free(old_reg);
2901: }
1.41 schwarze 2902: }
1.7 schwarze 2903:
1.212 schwarze 2904: static int
1.6 schwarze 2905: roff_nr(ROFF_ARGS)
1.1 schwarze 2906: {
1.199 schwarze 2907: char *key, *val, *step;
1.85 schwarze 2908: size_t keysz;
1.199 schwarze 2909: int iv, is, len;
1.60 schwarze 2910: char sign;
1.6 schwarze 2911:
1.110 schwarze 2912: key = val = buf->buf + pos;
2913: if (*key == '\0')
1.149 schwarze 2914: return ROFF_IGN;
1.85 schwarze 2915:
2916: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2917: if (key[keysz] == '\\')
1.149 schwarze 2918: return ROFF_IGN;
1.6 schwarze 2919:
1.60 schwarze 2920: sign = *val;
1.110 schwarze 2921: if (sign == '+' || sign == '-')
1.60 schwarze 2922: val++;
2923:
1.199 schwarze 2924: len = 0;
2925: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2926: return ROFF_IGN;
2927:
2928: step = val + len;
2929: while (isspace((unsigned char)*step))
2930: step++;
2931: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2932: is = INT_MIN;
1.1 schwarze 2933:
1.199 schwarze 2934: roff_setregn(r, key, keysz, iv, sign, is);
1.149 schwarze 2935: return ROFF_IGN;
1.76 schwarze 2936: }
2937:
1.212 schwarze 2938: static int
1.76 schwarze 2939: roff_rr(ROFF_ARGS)
2940: {
2941: struct roffreg *reg, **prev;
1.85 schwarze 2942: char *name, *cp;
2943: size_t namesz;
1.76 schwarze 2944:
1.110 schwarze 2945: name = cp = buf->buf + pos;
2946: if (*name == '\0')
1.149 schwarze 2947: return ROFF_IGN;
1.85 schwarze 2948: namesz = roff_getname(r, &cp, ln, pos);
2949: name[namesz] = '\0';
1.76 schwarze 2950:
2951: prev = &r->regtab;
2952: while (1) {
2953: reg = *prev;
1.110 schwarze 2954: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2955: break;
2956: prev = ®->next;
2957: }
1.110 schwarze 2958: if (reg != NULL) {
1.76 schwarze 2959: *prev = reg->next;
2960: free(reg->key.p);
2961: free(reg);
2962: }
1.149 schwarze 2963: return ROFF_IGN;
1.29 schwarze 2964: }
2965:
1.138 schwarze 2966: /* --- handler functions for roff requests -------------------------------- */
2967:
1.212 schwarze 2968: static int
1.29 schwarze 2969: roff_rm(ROFF_ARGS)
2970: {
2971: const char *name;
2972: char *cp;
1.85 schwarze 2973: size_t namesz;
1.29 schwarze 2974:
1.110 schwarze 2975: cp = buf->buf + pos;
2976: while (*cp != '\0') {
1.85 schwarze 2977: name = cp;
1.110 schwarze 2978: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2979: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 2980: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 2981: if (name[namesz] == '\\')
1.85 schwarze 2982: break;
1.29 schwarze 2983: }
1.149 schwarze 2984: return ROFF_IGN;
1.51 schwarze 2985: }
2986:
1.212 schwarze 2987: static int
1.51 schwarze 2988: roff_it(ROFF_ARGS)
2989: {
2990: int iv;
2991:
2992: /* Parse the number of lines. */
1.133 schwarze 2993:
2994: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2995: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2996: ln, ppos, buf->buf + 1);
1.149 schwarze 2997: return ROFF_IGN;
1.51 schwarze 2998: }
2999:
1.134 schwarze 3000: while (isspace((unsigned char)buf->buf[pos]))
3001: pos++;
3002:
3003: /*
3004: * Arm the input line trap.
3005: * Special-casing "an-trap" is an ugly workaround to cope
3006: * with DocBook stupidly fiddling with man(7) internals.
3007: */
1.133 schwarze 3008:
1.51 schwarze 3009: roffit_lines = iv;
1.134 schwarze 3010: roffit_macro = mandoc_strdup(iv != 1 ||
3011: strcmp(buf->buf + pos, "an-trap") ?
3012: buf->buf + pos : "br");
1.149 schwarze 3013: return ROFF_IGN;
1.47 schwarze 3014: }
3015:
1.212 schwarze 3016: static int
1.47 schwarze 3017: roff_Dd(ROFF_ARGS)
3018: {
1.187 schwarze 3019: int mask;
3020: enum roff_tok t, te;
1.99 schwarze 3021:
1.187 schwarze 3022: switch (tok) {
3023: case ROFF_Dd:
3024: tok = MDOC_Dd;
3025: te = MDOC_MAX;
3026: if (r->format == 0)
3027: r->format = MPARSE_MDOC;
3028: mask = MPARSE_MDOC | MPARSE_QUICK;
3029: break;
3030: case ROFF_TH:
3031: tok = MAN_TH;
3032: te = MAN_MAX;
3033: if (r->format == 0)
3034: r->format = MPARSE_MAN;
3035: mask = MPARSE_QUICK;
3036: break;
3037: default:
3038: abort();
3039: }
3040: if ((r->options & mask) == 0)
3041: for (t = tok; t < te; t++)
3042: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 3043: return ROFF_CONT;
1.14 schwarze 3044: }
3045:
1.212 schwarze 3046: static int
1.27 schwarze 3047: roff_TE(ROFF_ARGS)
3048: {
1.193 schwarze 3049: if (r->tbl == NULL) {
1.94 schwarze 3050: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3051: ln, ppos, "TE");
1.193 schwarze 3052: return ROFF_IGN;
3053: }
1.218 schwarze 3054: if (tbl_end(r->tbl, 0) == 0) {
1.193 schwarze 3055: r->tbl = NULL;
1.130 schwarze 3056: free(buf->buf);
3057: buf->buf = mandoc_strdup(".sp");
3058: buf->sz = 4;
1.201 schwarze 3059: *offs = 0;
1.149 schwarze 3060: return ROFF_REPARSE;
1.130 schwarze 3061: }
1.193 schwarze 3062: r->tbl = NULL;
1.149 schwarze 3063: return ROFF_IGN;
1.27 schwarze 3064: }
3065:
1.212 schwarze 3066: static int
1.27 schwarze 3067: roff_T_(ROFF_ARGS)
3068: {
3069:
3070: if (NULL == r->tbl)
1.94 schwarze 3071: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3072: ln, ppos, "T&");
1.27 schwarze 3073: else
1.168 schwarze 3074: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 3075:
1.149 schwarze 3076: return ROFF_IGN;
1.27 schwarze 3077: }
3078:
1.102 schwarze 3079: /*
3080: * Handle in-line equation delimiters.
3081: */
1.212 schwarze 3082: static int
1.110 schwarze 3083: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 3084: {
1.105 schwarze 3085: char *cp1, *cp2;
3086: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 3087:
1.102 schwarze 3088: /*
3089: * Outside equations, look for an opening delimiter.
3090: * If we are inside an equation, we already know it is
3091: * in-line, or this function wouldn't have been called;
3092: * so look for a closing delimiter.
3093: */
3094:
1.110 schwarze 3095: cp1 = buf->buf + pos;
1.102 schwarze 3096: cp2 = strchr(cp1, r->eqn == NULL ?
3097: r->last_eqn->odelim : r->last_eqn->cdelim);
3098: if (cp2 == NULL)
1.149 schwarze 3099: return ROFF_CONT;
1.102 schwarze 3100:
1.105 schwarze 3101: *cp2++ = '\0';
3102: bef_pr = bef_nl = aft_nl = aft_pr = "";
3103:
3104: /* Handle preceding text, protecting whitespace. */
3105:
1.110 schwarze 3106: if (*buf->buf != '\0') {
1.105 schwarze 3107: if (r->eqn == NULL)
3108: bef_pr = "\\&";
3109: bef_nl = "\n";
3110: }
3111:
3112: /*
3113: * Prepare replacing the delimiter with an equation macro
3114: * and drop leading white space from the equation.
3115: */
1.102 schwarze 3116:
1.105 schwarze 3117: if (r->eqn == NULL) {
3118: while (*cp2 == ' ')
3119: cp2++;
3120: mac = ".EQ";
3121: } else
3122: mac = ".EN";
3123:
3124: /* Handle following text, protecting whitespace. */
3125:
3126: if (*cp2 != '\0') {
3127: aft_nl = "\n";
3128: if (r->eqn != NULL)
3129: aft_pr = "\\&";
3130: }
3131:
3132: /* Do the actual replacement. */
3133:
1.110 schwarze 3134: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 3135: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 3136: free(buf->buf);
3137: buf->buf = cp1;
1.102 schwarze 3138:
3139: /* Toggle the in-line state of the eqn subsystem. */
3140:
3141: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 3142: return ROFF_REPARSE;
1.41 schwarze 3143: }
3144:
1.212 schwarze 3145: static int
1.107 schwarze 3146: roff_EQ(ROFF_ARGS)
1.32 schwarze 3147: {
1.191 schwarze 3148: struct roff_node *n;
3149:
1.194 schwarze 3150: if (r->man->macroset == MACROSET_MAN)
3151: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 3152: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3153: if (ln > r->man->last->line)
3154: n->flags |= NODE_LINE;
1.220 schwarze 3155: n->eqn = eqn_box_new();
1.191 schwarze 3156: roff_node_append(r->man, n);
3157: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 3158:
1.110 schwarze 3159: assert(r->eqn == NULL);
1.191 schwarze 3160: if (r->last_eqn == NULL)
3161: r->last_eqn = eqn_alloc(r->parse);
3162: else
3163: eqn_reset(r->last_eqn);
3164: r->eqn = r->last_eqn;
3165: r->eqn->node = n;
1.41 schwarze 3166:
1.110 schwarze 3167: if (buf->buf[pos] != '\0')
1.107 schwarze 3168: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 3169: ".EQ %s", buf->buf + pos);
1.41 schwarze 3170:
1.149 schwarze 3171: return ROFF_IGN;
1.32 schwarze 3172: }
3173:
1.212 schwarze 3174: static int
1.32 schwarze 3175: roff_EN(ROFF_ARGS)
3176: {
1.191 schwarze 3177: if (r->eqn != NULL) {
3178: eqn_parse(r->eqn);
3179: r->eqn = NULL;
3180: } else
3181: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
3182: if (buf->buf[pos] != '\0')
3183: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3184: "EN %s", buf->buf + pos);
1.149 schwarze 3185: return ROFF_IGN;
1.32 schwarze 3186: }
3187:
1.212 schwarze 3188: static int
1.27 schwarze 3189: roff_TS(ROFF_ARGS)
3190: {
1.193 schwarze 3191: if (r->tbl != NULL) {
1.94 schwarze 3192: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
3193: ln, ppos, "TS breaks TS");
1.218 schwarze 3194: tbl_end(r->tbl, 0);
1.27 schwarze 3195: }
1.218 schwarze 3196: r->tbl = tbl_alloc(ppos, ln, r->parse, r->last_tbl);
3197: if (r->last_tbl == NULL)
1.193 schwarze 3198: r->first_tbl = r->tbl;
3199: r->last_tbl = r->tbl;
1.169 schwarze 3200: return ROFF_IGN;
3201: }
3202:
1.212 schwarze 3203: static int
1.169 schwarze 3204: roff_onearg(ROFF_ARGS)
3205: {
3206: struct roff_node *n;
3207: char *cp;
1.177 schwarze 3208: int npos;
1.169 schwarze 3209:
1.174 schwarze 3210: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 3211: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3212: tok == ROFF_ti))
1.174 schwarze 3213: man_breakscope(r->man, tok);
3214:
1.181 schwarze 3215: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 3216: r->man->last = roffce_node;
3217: r->man->next = ROFF_NEXT_SIBLING;
3218: }
3219:
1.169 schwarze 3220: roff_elem_alloc(r->man, ln, ppos, tok);
3221: n = r->man->last;
3222:
3223: cp = buf->buf + pos;
3224: if (*cp != '\0') {
3225: while (*cp != '\0' && *cp != ' ')
3226: cp++;
3227: while (*cp == ' ')
3228: *cp++ = '\0';
3229: if (*cp != '\0')
3230: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
3231: r->parse, ln, cp - buf->buf,
3232: "%s ... %s", roff_name[tok], cp);
3233: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 3234: }
3235:
1.181 schwarze 3236: if (tok == ROFF_ce || tok == ROFF_rj) {
3237: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 3238: roff_word_alloc(r->man, ln, pos, "1");
3239: r->man->last->flags |= NODE_NOSRC;
3240: }
3241: npos = 0;
3242: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3243: &roffce_lines, 0) == 0) {
3244: mandoc_vmsg(MANDOCERR_CE_NONUM,
3245: r->parse, ln, pos, "ce %s", buf->buf + pos);
3246: roffce_lines = 1;
3247: }
3248: if (roffce_lines < 1) {
3249: r->man->last = r->man->last->parent;
3250: roffce_node = NULL;
3251: roffce_lines = 0;
3252: } else
3253: roffce_node = r->man->last->parent;
3254: } else {
3255: n->flags |= NODE_VALID | NODE_ENDED;
3256: r->man->last = n;
3257: }
3258: n->flags |= NODE_LINE;
1.172 schwarze 3259: r->man->next = ROFF_NEXT_SIBLING;
3260: return ROFF_IGN;
3261: }
3262:
1.212 schwarze 3263: static int
1.172 schwarze 3264: roff_manyarg(ROFF_ARGS)
3265: {
3266: struct roff_node *n;
3267: char *sp, *ep;
3268:
3269: roff_elem_alloc(r->man, ln, ppos, tok);
3270: n = r->man->last;
3271:
3272: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3273: while (*ep != '\0' && *ep != ' ')
3274: ep++;
3275: while (*ep == ' ')
3276: *ep++ = '\0';
3277: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3278: }
3279:
3280: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3281: r->man->last = n;
3282: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3283: return ROFF_IGN;
1.123 schwarze 3284: }
3285:
1.212 schwarze 3286: static int
1.183 schwarze 3287: roff_als(ROFF_ARGS)
3288: {
3289: char *oldn, *newn, *end, *value;
3290: size_t oldsz, newsz, valsz;
3291:
3292: newn = oldn = buf->buf + pos;
3293: if (*newn == '\0')
3294: return ROFF_IGN;
3295:
3296: newsz = roff_getname(r, &oldn, ln, pos);
3297: if (newn[newsz] == '\\' || *oldn == '\0')
3298: return ROFF_IGN;
3299:
3300: end = oldn;
3301: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3302: if (oldsz == 0)
3303: return ROFF_IGN;
3304:
1.210 schwarze 3305: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.187 schwarze 3306: (int)oldsz, oldn);
1.183 schwarze 3307: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3308: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3309: free(value);
3310: return ROFF_IGN;
3311: }
3312:
1.212 schwarze 3313: static int
1.168 schwarze 3314: roff_br(ROFF_ARGS)
1.123 schwarze 3315: {
1.174 schwarze 3316: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3317: man_breakscope(r->man, ROFF_br);
1.168 schwarze 3318: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3319: if (buf->buf[pos] != '\0')
3320: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3321: "%s %s", roff_name[tok], buf->buf + pos);
3322: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3323: r->man->next = ROFF_NEXT_SIBLING;
3324: return ROFF_IGN;
1.27 schwarze 3325: }
3326:
1.212 schwarze 3327: static int
1.48 schwarze 3328: roff_cc(ROFF_ARGS)
3329: {
3330: const char *p;
3331:
1.110 schwarze 3332: p = buf->buf + pos;
1.48 schwarze 3333:
1.110 schwarze 3334: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3335: r->control = '\0';
1.48 schwarze 3336:
1.110 schwarze 3337: if (*p != '\0')
1.132 schwarze 3338: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3339: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3340:
1.213 schwarze 3341: return ROFF_IGN;
3342: }
3343:
3344: static int
3345: roff_char(ROFF_ARGS)
3346: {
3347: const char *p, *kp, *vp;
3348: size_t ksz, vsz;
3349: int font;
3350:
3351: /* Parse the character to be replaced. */
3352:
3353: kp = buf->buf + pos;
3354: p = kp + 1;
3355: if (*kp == '\0' || (*kp == '\\' &&
3356: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3357: (*p != ' ' && *p != '\0')) {
3358: mandoc_vmsg(MANDOCERR_CHAR_ARG, r->parse,
3359: ln, pos, "char %s", kp);
3360: return ROFF_IGN;
3361: }
3362: ksz = p - kp;
3363: while (*p == ' ')
3364: p++;
3365:
3366: /*
3367: * If the replacement string contains a font escape sequence,
3368: * we have to restore the font at the end.
3369: */
3370:
3371: vp = p;
3372: vsz = strlen(p);
3373: font = 0;
3374: while (*p != '\0') {
3375: if (*p++ != '\\')
3376: continue;
3377: switch (mandoc_escape(&p, NULL, NULL)) {
3378: case ESCAPE_FONT:
3379: case ESCAPE_FONTROMAN:
3380: case ESCAPE_FONTITALIC:
3381: case ESCAPE_FONTBOLD:
3382: case ESCAPE_FONTBI:
1.214 schwarze 3383: case ESCAPE_FONTCW:
1.213 schwarze 3384: case ESCAPE_FONTPREV:
3385: font++;
3386: break;
3387: default:
3388: break;
3389: }
3390: }
3391: if (font > 1)
3392: mandoc_msg(MANDOCERR_CHAR_FONT, r->parse,
3393: ln, vp - buf->buf, vp);
3394:
3395: /*
3396: * Approximate the effect of .char using the .tr tables.
3397: * XXX In groff, .char and .tr interact differently.
3398: */
3399:
3400: if (ksz == 1) {
3401: if (r->xtab == NULL)
3402: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3403: assert((unsigned int)*kp < 128);
3404: free(r->xtab[(int)*kp].p);
3405: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3406: "%s%s", vp, font ? "\fP" : "");
3407: } else {
3408: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3409: if (font)
3410: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3411: }
1.149 schwarze 3412: return ROFF_IGN;
1.48 schwarze 3413: }
3414:
1.212 schwarze 3415: static int
1.175 schwarze 3416: roff_ec(ROFF_ARGS)
3417: {
3418: const char *p;
3419:
3420: p = buf->buf + pos;
3421: if (*p == '\0')
3422: r->escape = '\\';
3423: else {
3424: r->escape = *p;
3425: if (*++p != '\0')
3426: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3427: ln, p - buf->buf, "ec ... %s", p);
3428: }
3429: return ROFF_IGN;
3430: }
3431:
1.212 schwarze 3432: static int
1.175 schwarze 3433: roff_eo(ROFF_ARGS)
3434: {
3435: r->escape = '\0';
3436: if (buf->buf[pos] != '\0')
3437: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3438: ln, pos, "eo %s", buf->buf + pos);
3439: return ROFF_IGN;
1.202 schwarze 3440: }
3441:
1.212 schwarze 3442: static int
1.202 schwarze 3443: roff_nop(ROFF_ARGS)
3444: {
3445: while (buf->buf[pos] == ' ')
3446: pos++;
3447: *offs = pos;
3448: return ROFF_RERUN;
1.175 schwarze 3449: }
3450:
1.212 schwarze 3451: static int
1.42 schwarze 3452: roff_tr(ROFF_ARGS)
3453: {
3454: const char *p, *first, *second;
3455: size_t fsz, ssz;
3456: enum mandoc_esc esc;
3457:
1.110 schwarze 3458: p = buf->buf + pos;
1.42 schwarze 3459:
1.110 schwarze 3460: if (*p == '\0') {
1.132 schwarze 3461: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 3462: return ROFF_IGN;
1.42 schwarze 3463: }
3464:
1.110 schwarze 3465: while (*p != '\0') {
1.42 schwarze 3466: fsz = ssz = 1;
3467:
3468: first = p++;
1.110 schwarze 3469: if (*first == '\\') {
1.42 schwarze 3470: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3471: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3472: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3473: ln, (int)(p - buf->buf), first);
1.149 schwarze 3474: return ROFF_IGN;
1.42 schwarze 3475: }
3476: fsz = (size_t)(p - first);
3477: }
3478:
3479: second = p++;
1.110 schwarze 3480: if (*second == '\\') {
1.42 schwarze 3481: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3482: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3483: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3484: ln, (int)(p - buf->buf), second);
1.149 schwarze 3485: return ROFF_IGN;
1.42 schwarze 3486: }
3487: ssz = (size_t)(p - second);
1.110 schwarze 3488: } else if (*second == '\0') {
1.132 schwarze 3489: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3490: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3491: second = " ";
3492: p--;
3493: }
3494:
3495: if (fsz > 1) {
1.80 schwarze 3496: roff_setstrn(&r->xmbtab, first, fsz,
3497: second, ssz, 0);
1.42 schwarze 3498: continue;
3499: }
3500:
1.110 schwarze 3501: if (r->xtab == NULL)
1.80 schwarze 3502: r->xtab = mandoc_calloc(128,
3503: sizeof(struct roffstr));
1.42 schwarze 3504:
3505: free(r->xtab[(int)*first].p);
3506: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3507: r->xtab[(int)*first].sz = ssz;
3508: }
3509:
1.149 schwarze 3510: return ROFF_IGN;
1.42 schwarze 3511: }
3512:
1.211 schwarze 3513: /*
3514: * Implementation of the .return request.
3515: * There is no need to call roff_userret() from here.
3516: * The read module will call that after rewinding the reader stack
3517: * to the place from where the current macro was called.
3518: */
1.212 schwarze 3519: static int
1.211 schwarze 3520: roff_return(ROFF_ARGS)
3521: {
3522: if (r->mstackpos >= 0)
1.212 schwarze 3523: return ROFF_IGN | ROFF_USERRET;
1.211 schwarze 3524:
3525: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "return");
3526: return ROFF_IGN;
3527: }
3528:
1.212 schwarze 3529: static int
1.178 schwarze 3530: roff_rn(ROFF_ARGS)
3531: {
3532: const char *value;
3533: char *oldn, *newn, *end;
3534: size_t oldsz, newsz;
1.187 schwarze 3535: int deftype;
1.178 schwarze 3536:
3537: oldn = newn = buf->buf + pos;
3538: if (*oldn == '\0')
3539: return ROFF_IGN;
3540:
3541: oldsz = roff_getname(r, &newn, ln, pos);
3542: if (oldn[oldsz] == '\\' || *newn == '\0')
3543: return ROFF_IGN;
3544:
3545: end = newn;
3546: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3547: if (newsz == 0)
3548: return ROFF_IGN;
3549:
1.187 schwarze 3550: deftype = ROFFDEF_ANY;
3551: value = roff_getstrn(r, oldn, oldsz, &deftype);
3552: switch (deftype) {
3553: case ROFFDEF_USER:
1.178 schwarze 3554: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3555: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3556: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3557: break;
3558: case ROFFDEF_PRE:
3559: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3560: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3561: break;
3562: case ROFFDEF_REN:
1.178 schwarze 3563: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3564: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3565: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3566: break;
3567: case ROFFDEF_STD:
1.178 schwarze 3568: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3569: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3570: break;
3571: default:
3572: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3573: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3574: break;
3575: }
1.178 schwarze 3576: return ROFF_IGN;
3577: }
3578:
1.212 schwarze 3579: static int
1.211 schwarze 3580: roff_shift(ROFF_ARGS)
3581: {
3582: struct mctx *ctx;
3583: int levels, i;
3584:
3585: levels = 1;
3586: if (buf->buf[pos] != '\0' &&
3587: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
3588: mandoc_vmsg(MANDOCERR_CE_NONUM, r->parse,
3589: ln, pos, "shift %s", buf->buf + pos);
3590: levels = 1;
3591: }
3592: if (r->mstackpos < 0) {
3593: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "shift");
3594: return ROFF_IGN;
3595: }
3596: ctx = r->mstack + r->mstackpos;
3597: if (levels > ctx->argc) {
3598: mandoc_vmsg(MANDOCERR_SHIFT, r->parse,
3599: ln, pos, "%d, but max is %d", levels, ctx->argc);
3600: levels = ctx->argc;
3601: }
3602: if (levels == 0)
3603: return ROFF_IGN;
3604: for (i = 0; i < levels; i++)
3605: free(ctx->argv[i]);
3606: ctx->argc -= levels;
3607: for (i = 0; i < ctx->argc; i++)
3608: ctx->argv[i] = ctx->argv[i + levels];
3609: return ROFF_IGN;
3610: }
3611:
1.212 schwarze 3612: static int
1.14 schwarze 3613: roff_so(ROFF_ARGS)
3614: {
1.121 schwarze 3615: char *name, *cp;
1.15 schwarze 3616:
1.110 schwarze 3617: name = buf->buf + pos;
1.97 schwarze 3618: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3619:
1.22 schwarze 3620: /*
3621: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3622: * opening anything that's not in our cwd or anything beneath
3623: * it. Thus, explicitly disallow traversing up the file-system
3624: * or using absolute paths.
3625: */
3626:
1.110 schwarze 3627: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3628: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3629: ".so %s", name);
1.121 schwarze 3630: buf->sz = mandoc_asprintf(&cp,
3631: ".sp\nSee the file %s.\n.sp", name) + 1;
3632: free(buf->buf);
3633: buf->buf = cp;
3634: *offs = 0;
1.149 schwarze 3635: return ROFF_REPARSE;
1.14 schwarze 3636: }
3637:
3638: *offs = pos;
1.149 schwarze 3639: return ROFF_SO;
1.7 schwarze 3640: }
3641:
1.138 schwarze 3642: /* --- user defined strings and macros ------------------------------------ */
3643:
1.212 schwarze 3644: static int
1.16 schwarze 3645: roff_userdef(ROFF_ARGS)
1.12 schwarze 3646: {
1.211 schwarze 3647: struct mctx *ctx;
3648: char *arg, *ap, *dst, *src;
3649: size_t sz;
3650:
3651: /* Initialize a new macro stack context. */
3652:
3653: if (++r->mstackpos == r->mstacksz) {
3654: r->mstack = mandoc_recallocarray(r->mstack,
3655: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3656: r->mstacksz += 8;
3657: }
3658: ctx = r->mstack + r->mstackpos;
3659: ctx->argsz = 0;
3660: ctx->argc = 0;
3661: ctx->argv = NULL;
3662:
3663: /*
3664: * Collect pointers to macro argument strings,
3665: * NUL-terminating them and escaping quotes.
3666: */
3667:
3668: src = buf->buf + pos;
3669: while (*src != '\0') {
3670: if (ctx->argc == ctx->argsz) {
3671: ctx->argsz += 8;
3672: ctx->argv = mandoc_reallocarray(ctx->argv,
3673: ctx->argsz, sizeof(*ctx->argv));
3674: }
3675: arg = mandoc_getarg(r->parse, &src, ln, &pos);
3676: sz = 1; /* For the terminating NUL. */
3677: for (ap = arg; *ap != '\0'; ap++)
3678: sz += *ap == '"' ? 4 : 1;
3679: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3680: for (ap = arg; *ap != '\0'; ap++) {
3681: if (*ap == '"') {
3682: memcpy(dst, "\\(dq", 4);
3683: dst += 4;
3684: } else
3685: *dst++ = *ap;
1.16 schwarze 3686: }
1.211 schwarze 3687: *dst = '\0';
1.209 schwarze 3688: }
3689:
1.211 schwarze 3690: /* Replace the macro invocation by the macro definition. */
1.135 schwarze 3691:
1.110 schwarze 3692: free(buf->buf);
1.211 schwarze 3693: buf->buf = mandoc_strdup(r->current_string);
3694: buf->sz = strlen(buf->buf) + 1;
1.120 schwarze 3695: *offs = 0;
1.16 schwarze 3696:
1.149 schwarze 3697: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.212 schwarze 3698: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.12 schwarze 3699: }
1.28 schwarze 3700:
1.178 schwarze 3701: /*
3702: * Calling a high-level macro that was renamed with .rn.
3703: * r->current_string has already been set up by roff_parse().
3704: */
1.212 schwarze 3705: static int
1.178 schwarze 3706: roff_renamed(ROFF_ARGS)
3707: {
3708: char *nbuf;
3709:
1.187 schwarze 3710: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3711: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3712: free(buf->buf);
3713: buf->buf = nbuf;
1.201 schwarze 3714: *offs = 0;
1.178 schwarze 3715: return ROFF_CONT;
3716: }
3717:
1.85 schwarze 3718: static size_t
1.28 schwarze 3719: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3720: {
3721: char *name, *cp;
1.85 schwarze 3722: size_t namesz;
1.28 schwarze 3723:
3724: name = *cpp;
3725: if ('\0' == *name)
1.149 schwarze 3726: return 0;
1.28 schwarze 3727:
1.85 schwarze 3728: /* Read until end of name and terminate it with NUL. */
3729: for (cp = name; 1; cp++) {
3730: if ('\0' == *cp || ' ' == *cp) {
3731: namesz = cp - name;
3732: break;
3733: }
1.28 schwarze 3734: if ('\\' != *cp)
3735: continue;
1.88 schwarze 3736: namesz = cp - name;
3737: if ('{' == cp[1] || '}' == cp[1])
3738: break;
1.28 schwarze 3739: cp++;
3740: if ('\\' == *cp)
3741: continue;
1.97 schwarze 3742: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3743: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3744: mandoc_escape((const char **)&cp, NULL, NULL);
3745: break;
1.28 schwarze 3746: }
3747:
3748: /* Read past spaces. */
3749: while (' ' == *cp)
3750: cp++;
3751:
3752: *cpp = cp;
1.149 schwarze 3753: return namesz;
1.28 schwarze 3754: }
3755:
1.16 schwarze 3756: /*
3757: * Store *string into the user-defined string called *name.
3758: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3759: * append == 0: replace mode
3760: * append == 1: single-line append mode
3761: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3762: */
1.8 schwarze 3763: static void
1.16 schwarze 3764: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3765: int append)
1.7 schwarze 3766: {
1.187 schwarze 3767: size_t namesz;
1.42 schwarze 3768:
1.187 schwarze 3769: namesz = strlen(name);
3770: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3771: string ? strlen(string) : 0, append);
1.187 schwarze 3772: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3773: }
3774:
3775: static void
3776: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3777: const char *string, size_t stringsz, int append)
1.42 schwarze 3778: {
3779: struct roffkv *n;
3780: char *c;
3781: int i;
3782: size_t oldch, newch;
1.7 schwarze 3783:
1.16 schwarze 3784: /* Search for an existing string with the same name. */
1.42 schwarze 3785: n = *r;
3786:
1.84 schwarze 3787: while (n && (namesz != n->key.sz ||
3788: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3789: n = n->next;
1.8 schwarze 3790:
3791: if (NULL == n) {
1.16 schwarze 3792: /* Create a new string table entry. */
1.42 schwarze 3793: n = mandoc_malloc(sizeof(struct roffkv));
3794: n->key.p = mandoc_strndup(name, namesz);
3795: n->key.sz = namesz;
3796: n->val.p = NULL;
3797: n->val.sz = 0;
3798: n->next = *r;
3799: *r = n;
1.66 schwarze 3800: } else if (0 == append) {
1.42 schwarze 3801: free(n->val.p);
3802: n->val.p = NULL;
3803: n->val.sz = 0;
1.16 schwarze 3804: }
3805:
3806: if (NULL == string)
3807: return;
3808:
3809: /*
3810: * One additional byte for the '\n' in multiline mode,
3811: * and one for the terminating '\0'.
3812: */
1.66 schwarze 3813: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3814:
3815: if (NULL == n->val.p) {
3816: n->val.p = mandoc_malloc(newch);
3817: *n->val.p = '\0';
1.16 schwarze 3818: oldch = 0;
3819: } else {
1.42 schwarze 3820: oldch = n->val.sz;
3821: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3822: }
3823:
3824: /* Skip existing content in the destination buffer. */
1.42 schwarze 3825: c = n->val.p + (int)oldch;
1.16 schwarze 3826:
3827: /* Append new content to the destination buffer. */
1.42 schwarze 3828: i = 0;
3829: while (i < (int)stringsz) {
1.16 schwarze 3830: /*
3831: * Rudimentary roff copy mode:
3832: * Handle escaped backslashes.
3833: */
1.42 schwarze 3834: if ('\\' == string[i] && '\\' == string[i + 1])
3835: i++;
3836: *c++ = string[i++];
1.16 schwarze 3837: }
1.8 schwarze 3838:
1.16 schwarze 3839: /* Append terminating bytes. */
1.66 schwarze 3840: if (1 < append)
1.16 schwarze 3841: *c++ = '\n';
1.42 schwarze 3842:
1.16 schwarze 3843: *c = '\0';
1.42 schwarze 3844: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3845: }
3846:
1.8 schwarze 3847: static const char *
1.197 schwarze 3848: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 3849: int *deftype)
1.7 schwarze 3850: {
1.187 schwarze 3851: const struct roffkv *n;
1.197 schwarze 3852: int found, i;
1.187 schwarze 3853: enum roff_tok tok;
3854:
1.197 schwarze 3855: found = 0;
3856: for (n = r->strtab; n != NULL; n = n->next) {
3857: if (strncmp(name, n->key.p, len) != 0 ||
3858: n->key.p[len] != '\0' || n->val.p == NULL)
3859: continue;
3860: if (*deftype & ROFFDEF_USER) {
3861: *deftype = ROFFDEF_USER;
3862: return n->val.p;
3863: } else {
3864: found = 1;
3865: break;
3866: }
3867: }
3868: for (n = r->rentab; n != NULL; n = n->next) {
3869: if (strncmp(name, n->key.p, len) != 0 ||
3870: n->key.p[len] != '\0' || n->val.p == NULL)
3871: continue;
3872: if (*deftype & ROFFDEF_REN) {
3873: *deftype = ROFFDEF_REN;
3874: return n->val.p;
3875: } else {
3876: found = 1;
3877: break;
1.187 schwarze 3878: }
3879: }
1.197 schwarze 3880: for (i = 0; i < PREDEFS_MAX; i++) {
3881: if (strncmp(name, predefs[i].name, len) != 0 ||
3882: predefs[i].name[len] != '\0')
3883: continue;
3884: if (*deftype & ROFFDEF_PRE) {
3885: *deftype = ROFFDEF_PRE;
3886: return predefs[i].str;
3887: } else {
3888: found = 1;
3889: break;
1.187 schwarze 3890: }
3891: }
1.197 schwarze 3892: if (r->man->macroset != MACROSET_MAN) {
3893: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3894: if (strncmp(name, roff_name[tok], len) != 0 ||
3895: roff_name[tok][len] != '\0')
3896: continue;
3897: if (*deftype & ROFFDEF_STD) {
3898: *deftype = ROFFDEF_STD;
3899: return NULL;
3900: } else {
3901: found = 1;
3902: break;
1.187 schwarze 3903: }
3904: }
3905: }
1.197 schwarze 3906: if (r->man->macroset != MACROSET_MDOC) {
3907: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3908: if (strncmp(name, roff_name[tok], len) != 0 ||
3909: roff_name[tok][len] != '\0')
3910: continue;
3911: if (*deftype & ROFFDEF_STD) {
3912: *deftype = ROFFDEF_STD;
3913: return NULL;
3914: } else {
3915: found = 1;
3916: break;
1.187 schwarze 3917: }
3918: }
1.197 schwarze 3919: }
3920:
3921: if (found == 0 && *deftype != ROFFDEF_ANY) {
3922: if (*deftype & ROFFDEF_REN) {
3923: /*
3924: * This might still be a request,
3925: * so do not treat it as undefined yet.
3926: */
3927: *deftype = ROFFDEF_UNDEF;
3928: return NULL;
1.187 schwarze 3929: }
1.197 schwarze 3930:
3931: /* Using an undefined string defines it to be empty. */
3932:
3933: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3934: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 3935: }
1.197 schwarze 3936:
1.187 schwarze 3937: *deftype = 0;
1.149 schwarze 3938: return NULL;
1.7 schwarze 3939: }
3940:
1.8 schwarze 3941: static void
1.42 schwarze 3942: roff_freestr(struct roffkv *r)
1.7 schwarze 3943: {
1.42 schwarze 3944: struct roffkv *n, *nn;
1.7 schwarze 3945:
1.42 schwarze 3946: for (n = r; n; n = nn) {
3947: free(n->key.p);
3948: free(n->val.p);
1.7 schwarze 3949: nn = n->next;
3950: free(n);
3951: }
1.27 schwarze 3952: }
1.138 schwarze 3953:
3954: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 3955:
3956: /*
3957: * Duplicate an input string, making the appropriate character
3958: * conversations (as stipulated by `tr') along the way.
3959: * Returns a heap-allocated string with all the replacements made.
3960: */
3961: char *
3962: roff_strdup(const struct roff *r, const char *p)
3963: {
3964: const struct roffkv *cp;
3965: char *res;
3966: const char *pp;
3967: size_t ssz, sz;
3968: enum mandoc_esc esc;
3969:
3970: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3971: return mandoc_strdup(p);
1.42 schwarze 3972: else if ('\0' == *p)
1.149 schwarze 3973: return mandoc_strdup("");
1.42 schwarze 3974:
3975: /*
3976: * Step through each character looking for term matches
3977: * (remember that a `tr' can be invoked with an escape, which is
3978: * a glyph but the escape is multi-character).
3979: * We only do this if the character hash has been initialised
3980: * and the string is >0 length.
3981: */
3982:
3983: res = NULL;
3984: ssz = 0;
3985:
3986: while ('\0' != *p) {
1.161 schwarze 3987: assert((unsigned int)*p < 128);
3988: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3989: sz = r->xtab[(int)*p].sz;
3990: res = mandoc_realloc(res, ssz + sz + 1);
3991: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3992: ssz += sz;
3993: p++;
3994: continue;
3995: } else if ('\\' != *p) {
3996: res = mandoc_realloc(res, ssz + 2);
3997: res[ssz++] = *p++;
3998: continue;
3999: }
4000:
4001: /* Search for term matches. */
4002: for (cp = r->xmbtab; cp; cp = cp->next)
4003: if (0 == strncmp(p, cp->key.p, cp->key.sz))
4004: break;
4005:
4006: if (NULL != cp) {
4007: /*
4008: * A match has been found.
4009: * Append the match to the array and move
4010: * forward by its keysize.
4011: */
1.80 schwarze 4012: res = mandoc_realloc(res,
4013: ssz + cp->val.sz + 1);
1.42 schwarze 4014: memcpy(res + ssz, cp->val.p, cp->val.sz);
4015: ssz += cp->val.sz;
4016: p += (int)cp->key.sz;
4017: continue;
4018: }
4019:
4020: /*
4021: * Handle escapes carefully: we need to copy
4022: * over just the escape itself, or else we might
4023: * do replacements within the escape itself.
4024: * Make sure to pass along the bogus string.
4025: */
4026: pp = p++;
4027: esc = mandoc_escape(&p, NULL, NULL);
4028: if (ESCAPE_ERROR == esc) {
4029: sz = strlen(pp);
4030: res = mandoc_realloc(res, ssz + sz + 1);
4031: memcpy(res + ssz, pp, sz);
4032: break;
4033: }
1.80 schwarze 4034: /*
4035: * We bail out on bad escapes.
1.42 schwarze 4036: * No need to warn: we already did so when
4037: * roff_res() was called.
4038: */
4039: sz = (int)(p - pp);
4040: res = mandoc_realloc(res, ssz + sz + 1);
4041: memcpy(res + ssz, pp, sz);
4042: ssz += sz;
4043: }
4044:
4045: res[(int)ssz] = '\0';
1.149 schwarze 4046: return res;
1.99 schwarze 4047: }
4048:
4049: int
4050: roff_getformat(const struct roff *r)
4051: {
4052:
1.149 schwarze 4053: return r->format;
1.48 schwarze 4054: }
4055:
4056: /*
1.80 schwarze 4057: * Find out whether a line is a macro line or not.
1.48 schwarze 4058: * If it is, adjust the current position and return one; if it isn't,
4059: * return zero and don't change the current position.
4060: * If the control character has been set with `.cc', then let that grain
4061: * precedence.
4062: * This is slighly contrary to groff, where using the non-breaking
4063: * control character when `cc' has been invoked will cause the
4064: * non-breaking macro contents to be printed verbatim.
4065: */
4066: int
4067: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4068: {
4069: int pos;
4070:
4071: pos = *ppos;
4072:
1.175 schwarze 4073: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 4074: pos++;
1.175 schwarze 4075: else if (r->control != '\0')
1.149 schwarze 4076: return 0;
1.48 schwarze 4077: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4078: pos += 2;
4079: else if ('.' == cp[pos] || '\'' == cp[pos])
4080: pos++;
4081: else
1.149 schwarze 4082: return 0;
1.48 schwarze 4083:
4084: while (' ' == cp[pos] || '\t' == cp[pos])
4085: pos++;
4086:
4087: *ppos = pos;
1.149 schwarze 4088: return 1;
1.1 schwarze 4089: }
![[BACK]](/icons/back.gif){kind=icon}
Return to roff.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / mandoc