Annotation of mandoc/roff.c, Revision 1.365
1.365 ! schwarze 1: /* $Id: roff.c,v 1.364 2019/04/21 22:48:58 schwarze Exp $ */
1.1 kristaps 2: /*
1.267 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.360 schwarze 4: * Copyright (c) 2010-2015, 2017-2019 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.66 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.106 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.66 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.106 kristaps 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.66 kristaps 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.
1.1 kristaps 17: */
1.66 kristaps 18: #include "config.h"
1.225 schwarze 19:
20: #include <sys/types.h>
1.30 kristaps 21:
1.67 kristaps 22: #include <assert.h>
1.85 kristaps 23: #include <ctype.h>
1.245 schwarze 24: #include <limits.h>
1.295 schwarze 25: #include <stddef.h>
26: #include <stdint.h>
1.178 schwarze 27: #include <stdio.h>
1.1 kristaps 28: #include <stdlib.h>
1.67 kristaps 29: #include <string.h>
1.1 kristaps 30:
1.201 schwarze 31: #include "mandoc_aux.h"
1.295 schwarze 32: #include "mandoc_ohash.h"
1.345 schwarze 33: #include "mandoc.h"
1.265 schwarze 34: #include "roff.h"
1.349 schwarze 35: #include "mandoc_parse.h"
1.226 schwarze 36: #include "libmandoc.h"
1.266 schwarze 37: #include "roff_int.h"
1.346 schwarze 38: #include "tbl_parse.h"
1.347 schwarze 39: #include "eqn_parse.h"
1.82 kristaps 40:
1.355 schwarze 41: /*
42: * ASCII_ESC is used to signal from roff_getarg() to roff_expand()
43: * that an escape sequence resulted from copy-in processing and
44: * needs to be checked or interpolated. As it is used nowhere
45: * else, it is defined here rather than in a header file.
46: */
47: #define ASCII_ESC 27
48:
1.170 schwarze 49: /* Maximum number of string expansions per line, to break infinite loops. */
50: #define EXPAND_LIMIT 1000
51:
1.315 schwarze 52: /* Types of definitions of macros and strings. */
53: #define ROFFDEF_USER (1 << 1) /* User-defined. */
54: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
55: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
56: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
57: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
58: ROFFDEF_REN | ROFFDEF_STD)
1.325 schwarze 59: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 60:
1.266 schwarze 61: /* --- data types --------------------------------------------------------- */
62:
1.147 kristaps 63: /*
1.167 kristaps 64: * An incredibly-simple string buffer.
65: */
1.94 kristaps 66: struct roffstr {
1.167 kristaps 67: char *p; /* nil-terminated buffer */
68: size_t sz; /* saved strlen(p) */
1.166 kristaps 69: };
70:
71: /*
1.167 kristaps 72: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 73: */
74: struct roffkv {
75: struct roffstr key;
76: struct roffstr val;
77: struct roffkv *next; /* next in list */
1.94 kristaps 78: };
79:
1.180 schwarze 80: /*
81: * A single number register as part of a singly-linked list.
82: */
83: struct roffreg {
84: struct roffstr key;
1.181 schwarze 85: int val;
1.327 schwarze 86: int step;
1.180 schwarze 87: struct roffreg *next;
88: };
89:
1.295 schwarze 90: /*
91: * Association of request and macro names with token IDs.
92: */
93: struct roffreq {
94: enum roff_tok tok;
95: char name[];
96: };
97:
1.339 schwarze 98: /*
99: * A macro processing context.
100: * More than one is needed when macro calls are nested.
101: */
102: struct mctx {
103: char **argv;
104: int argc;
105: int argsz;
106: };
107:
1.67 kristaps 108: struct roff {
1.296 schwarze 109: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 110: struct roffnode *last; /* leaf of stack */
1.339 schwarze 111: struct mctx *mstack; /* stack of macro contexts */
1.223 schwarze 112: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 113: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 114: struct roffreg *regtab; /* number registers */
1.166 kristaps 115: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 116: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 117: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
118: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 119: const char *current_string; /* value of last called user macro */
1.118 kristaps 120: struct tbl_node *first_tbl; /* first table parsed */
121: struct tbl_node *last_tbl; /* last table parsed */
122: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 123: struct eqn_node *last_eqn; /* equation parser */
124: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 125: int eqn_inline; /* current equation is inline */
1.223 schwarze 126: int options; /* parse options */
1.339 schwarze 127: int mstacksz; /* current size of mstack */
128: int mstackpos; /* position in mstack */
1.223 schwarze 129: int rstacksz; /* current size limit of rstack */
130: int rstackpos; /* position in rstack */
1.227 schwarze 131: int format; /* current file in mdoc or man format */
1.223 schwarze 132: char control; /* control character */
1.303 schwarze 133: char escape; /* escape character */
1.79 kristaps 134: };
135:
1.364 schwarze 136: /*
137: * A macro definition, condition, or ignored block.
138: */
1.67 kristaps 139: struct roffnode {
1.294 schwarze 140: enum roff_tok tok; /* type of node */
1.67 kristaps 141: struct roffnode *parent; /* up one in stack */
142: int line; /* parse line */
143: int col; /* parse col */
1.106 kristaps 144: char *name; /* node name, e.g. macro name */
1.364 schwarze 145: char *end; /* custom end macro of the block */
146: int endspan; /* scope to: 1=eol 2=next line -1=\} */
147: int rule; /* content is: 1=evaluated 0=skipped */
1.67 kristaps 148: };
149:
150: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 151: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 152: struct buf *buf, /* input buffer */ \
1.67 kristaps 153: int ln, /* parse line */ \
1.75 kristaps 154: int ppos, /* original pos in buffer */ \
155: int pos, /* current pos in buffer */ \
1.74 kristaps 156: int *offs /* reset offset of buffer data */
1.67 kristaps 157:
1.340 schwarze 158: typedef int (*roffproc)(ROFF_ARGS);
1.67 kristaps 159:
160: struct roffmac {
1.79 kristaps 161: roffproc proc; /* process new macro */
162: roffproc text; /* process as child text of macro */
163: roffproc sub; /* process as child of macro */
164: int flags;
165: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 166: };
167:
1.141 kristaps 168: struct predef {
169: const char *name; /* predefined input name */
170: const char *str; /* replacement symbol */
171: };
172:
173: #define PREDEF(__name, __str) \
174: { (__name), (__str) },
175:
1.266 schwarze 176: /* --- function prototypes ------------------------------------------------ */
177:
1.340 schwarze 178: static int roffnode_cleanscope(struct roff *);
179: static int roffnode_pop(struct roff *);
1.294 schwarze 180: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 181: const char *, int, int);
1.346 schwarze 182: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.340 schwarze 183: static int roff_als(ROFF_ARGS);
184: static int roff_block(ROFF_ARGS);
185: static int roff_block_text(ROFF_ARGS);
186: static int roff_block_sub(ROFF_ARGS);
1.364 schwarze 187: static int roff_break(ROFF_ARGS);
1.340 schwarze 188: static int roff_cblock(ROFF_ARGS);
189: static int roff_cc(ROFF_ARGS);
190: static int roff_ccond(struct roff *, int, int);
1.341 schwarze 191: static int roff_char(ROFF_ARGS);
1.340 schwarze 192: static int roff_cond(ROFF_ARGS);
193: static int roff_cond_text(ROFF_ARGS);
194: static int roff_cond_sub(ROFF_ARGS);
195: static int roff_ds(ROFF_ARGS);
196: static int roff_ec(ROFF_ARGS);
197: static int roff_eo(ROFF_ARGS);
198: static int roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 199: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 200: static int roff_evalnum(struct roff *, int,
201: const char *, int *, int *, int);
202: static int roff_evalpar(struct roff *, int,
1.261 schwarze 203: const char *, int *, int *, int);
1.198 schwarze 204: static int roff_evalstrcond(const char *, int *);
1.355 schwarze 205: static int roff_expand(struct roff *, struct buf *,
206: int, int, char);
1.155 kristaps 207: static void roff_free1(struct roff *);
1.180 schwarze 208: static void roff_freereg(struct roffreg *);
1.167 kristaps 209: static void roff_freestr(struct roffkv *);
1.212 schwarze 210: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 211: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 212: static int roff_getop(const char *, int *, char *);
1.327 schwarze 213: static int roff_getregn(struct roff *,
214: const char *, size_t, char);
1.273 schwarze 215: static int roff_getregro(const struct roff *,
216: const char *name);
1.325 schwarze 217: static const char *roff_getstrn(struct roff *,
1.315 schwarze 218: const char *, size_t, int *);
1.271 schwarze 219: static int roff_hasregn(const struct roff *,
220: const char *, size_t);
1.340 schwarze 221: static int roff_insec(ROFF_ARGS);
222: static int roff_it(ROFF_ARGS);
223: static int roff_line_ignore(ROFF_ARGS);
1.265 schwarze 224: static void roff_man_alloc1(struct roff_man *);
225: static void roff_man_free1(struct roff_man *);
1.340 schwarze 226: static int roff_manyarg(ROFF_ARGS);
1.358 schwarze 227: static int roff_noarg(ROFF_ARGS);
1.340 schwarze 228: static int roff_nop(ROFF_ARGS);
229: static int roff_nr(ROFF_ARGS);
230: static int roff_onearg(ROFF_ARGS);
1.294 schwarze 231: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 232: int, int);
1.340 schwarze 233: static int roff_parsetext(struct roff *, struct buf *,
1.305 schwarze 234: int, int *);
1.340 schwarze 235: static int roff_renamed(ROFF_ARGS);
236: static int roff_return(ROFF_ARGS);
237: static int roff_rm(ROFF_ARGS);
238: static int roff_rn(ROFF_ARGS);
239: static int roff_rr(ROFF_ARGS);
1.326 schwarze 240: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 241: size_t, int, char, int);
1.94 kristaps 242: static void roff_setstr(struct roff *,
1.106 kristaps 243: const char *, const char *, int);
1.207 schwarze 244: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 245: size_t, const char *, size_t, int);
1.340 schwarze 246: static int roff_shift(ROFF_ARGS);
247: static int roff_so(ROFF_ARGS);
248: static int roff_tr(ROFF_ARGS);
249: static int roff_Dd(ROFF_ARGS);
250: static int roff_TE(ROFF_ARGS);
251: static int roff_TS(ROFF_ARGS);
252: static int roff_EQ(ROFF_ARGS);
253: static int roff_EN(ROFF_ARGS);
254: static int roff_T_(ROFF_ARGS);
255: static int roff_unsupp(ROFF_ARGS);
256: static int roff_userdef(ROFF_ARGS);
1.67 kristaps 257:
1.266 schwarze 258: /* --- constant data ------------------------------------------------------ */
259:
1.261 schwarze 260: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
261: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
262:
1.294 schwarze 263: const char *__roff_name[MAN_MAX + 1] = {
1.358 schwarze 264: "br", "ce", "fi", "ft",
265: "ll", "mc", "nf",
266: "po", "rj", "sp",
1.312 schwarze 267: "ta", "ti", NULL,
1.294 schwarze 268: "ab", "ad", "af", "aln",
269: "als", "am", "am1", "ami",
270: "ami1", "as", "as1", "asciify",
271: "backtrace", "bd", "bleedat", "blm",
272: "box", "boxa", "bp", "BP",
273: "break", "breakchar", "brnl", "brp",
1.305 schwarze 274: "brpnl", "c2", "cc",
1.294 schwarze 275: "cf", "cflags", "ch", "char",
276: "chop", "class", "close", "CL",
277: "color", "composite", "continue", "cp",
278: "cropat", "cs", "cu", "da",
279: "dch", "Dd", "de", "de1",
280: "defcolor", "dei", "dei1", "device",
281: "devicem", "di", "do", "ds",
282: "ds1", "dwh", "dt", "ec",
283: "ecr", "ecs", "el", "em",
284: "EN", "eo", "EP", "EQ",
285: "errprint", "ev", "evc", "ex",
286: "fallback", "fam", "fc", "fchar",
287: "fcolor", "fdeferlig", "feature", "fkern",
288: "fl", "flig", "fp", "fps",
289: "fschar", "fspacewidth", "fspecial", "ftr",
290: "fzoom", "gcolor", "hc", "hcode",
291: "hidechar", "hla", "hlm", "hpf",
292: "hpfa", "hpfcode", "hw", "hy",
293: "hylang", "hylen", "hym", "hypp",
294: "hys", "ie", "if", "ig",
295: "index", "it", "itc", "IX",
296: "kern", "kernafter", "kernbefore", "kernpair",
297: "lc", "lc_ctype", "lds", "length",
298: "letadj", "lf", "lg", "lhang",
299: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 300: "ls", "lsm", "lt",
1.294 schwarze 301: "mediasize", "minss", "mk", "mso",
302: "na", "ne", "nh", "nhychar",
303: "nm", "nn", "nop", "nr",
304: "nrf", "nroff", "ns", "nx",
305: "open", "opena", "os", "output",
306: "padj", "papersize", "pc", "pev",
307: "pi", "PI", "pl", "pm",
1.312 schwarze 308: "pn", "pnr", "ps",
1.294 schwarze 309: "psbb", "pshape", "pso", "ptr",
310: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 311: "return", "rfschar", "rhang",
1.294 schwarze 312: "rm", "rn", "rnn", "rr",
313: "rs", "rt", "schar", "sentchar",
314: "shc", "shift", "sizes", "so",
315: "spacewidth", "special", "spreadwarn", "ss",
316: "sty", "substring", "sv", "sy",
1.300 schwarze 317: "T&", "tc", "TE",
1.301 schwarze 318: "TH", "tkf", "tl",
1.294 schwarze 319: "tm", "tm1", "tmc", "tr",
320: "track", "transchar", "trf", "trimat",
321: "trin", "trnt", "troff", "TS",
322: "uf", "ul", "unformat", "unwatch",
323: "unwatchn", "vpt", "vs", "warn",
324: "warnscale", "watch", "watchlength", "watchn",
325: "wh", "while", "write", "writec",
326: "writem", "xflag", ".", NULL,
1.306 schwarze 327: NULL, "text",
1.294 schwarze 328: "Dd", "Dt", "Os", "Sh",
329: "Ss", "Pp", "D1", "Dl",
330: "Bd", "Ed", "Bl", "El",
331: "It", "Ad", "An", "Ap",
332: "Ar", "Cd", "Cm", "Dv",
333: "Er", "Ev", "Ex", "Fa",
334: "Fd", "Fl", "Fn", "Ft",
335: "Ic", "In", "Li", "Nd",
336: "Nm", "Op", "Ot", "Pa",
337: "Rv", "St", "Va", "Vt",
338: "Xr", "%A", "%B", "%D",
339: "%I", "%J", "%N", "%O",
340: "%P", "%R", "%T", "%V",
341: "Ac", "Ao", "Aq", "At",
342: "Bc", "Bf", "Bo", "Bq",
343: "Bsx", "Bx", "Db", "Dc",
344: "Do", "Dq", "Ec", "Ef",
345: "Em", "Eo", "Fx", "Ms",
346: "No", "Ns", "Nx", "Ox",
347: "Pc", "Pf", "Po", "Pq",
348: "Qc", "Ql", "Qo", "Qq",
349: "Re", "Rs", "Sc", "So",
350: "Sq", "Sm", "Sx", "Sy",
351: "Tn", "Ux", "Xc", "Xo",
352: "Fo", "Fc", "Oo", "Oc",
353: "Bk", "Ek", "Bt", "Hf",
354: "Fr", "Ud", "Lb", "Lp",
355: "Lk", "Mt", "Brq", "Bro",
356: "Brc", "%C", "Es", "En",
1.299 schwarze 357: "Dx", "%Q", "%U", "Ta",
358: NULL,
1.294 schwarze 359: "TH", "SH", "SS", "TP",
1.332 schwarze 360: "TQ",
1.294 schwarze 361: "LP", "PP", "P", "IP",
362: "HP", "SM", "SB", "BI",
363: "IB", "BR", "RB", "R",
364: "B", "I", "IR", "RI",
365: "RE", "RS", "DT", "UC",
1.297 schwarze 366: "PD", "AT", "in",
1.333 schwarze 367: "SY", "YS", "OP",
368: "EX", "EE", "UR",
1.317 schwarze 369: "UE", "MT", "ME", NULL
1.294 schwarze 370: };
371: const char *const *roff_name = __roff_name;
372:
373: static struct roffmac roffs[TOKEN_NONE] = {
1.358 schwarze 374: { roff_noarg, NULL, NULL, 0 }, /* br */
1.305 schwarze 375: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.358 schwarze 376: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.297 schwarze 377: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 378: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 379: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.358 schwarze 380: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.312 schwarze 381: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 382: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 383: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 384: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 385: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 386: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 387: { roff_unsupp, NULL, NULL, 0 }, /* ab */
388: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
389: { roff_line_ignore, NULL, NULL, 0 }, /* af */
390: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 391: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 392: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
393: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
394: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
395: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
396: { roff_ds, NULL, NULL, 0 }, /* as */
397: { roff_ds, NULL, NULL, 0 }, /* as1 */
398: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
399: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
400: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
401: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
402: { roff_unsupp, NULL, NULL, 0 }, /* blm */
403: { roff_unsupp, NULL, NULL, 0 }, /* box */
404: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
405: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
406: { roff_unsupp, NULL, NULL, 0 }, /* BP */
1.364 schwarze 407: { roff_break, NULL, NULL, 0 }, /* break */
1.295 schwarze 408: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
409: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.358 schwarze 410: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.295 schwarze 411: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
412: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
413: { roff_cc, NULL, NULL, 0 }, /* cc */
414: { roff_insec, NULL, NULL, 0 }, /* cf */
415: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
416: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.341 schwarze 417: { roff_char, NULL, NULL, 0 }, /* char */
1.295 schwarze 418: { roff_unsupp, NULL, NULL, 0 }, /* chop */
419: { roff_line_ignore, NULL, NULL, 0 }, /* class */
420: { roff_insec, NULL, NULL, 0 }, /* close */
421: { roff_unsupp, NULL, NULL, 0 }, /* CL */
422: { roff_line_ignore, NULL, NULL, 0 }, /* color */
423: { roff_unsupp, NULL, NULL, 0 }, /* composite */
424: { roff_unsupp, NULL, NULL, 0 }, /* continue */
425: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
426: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
427: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
428: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
429: { roff_unsupp, NULL, NULL, 0 }, /* da */
430: { roff_unsupp, NULL, NULL, 0 }, /* dch */
431: { roff_Dd, NULL, NULL, 0 }, /* Dd */
432: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
433: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
434: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
435: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
436: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
437: { roff_unsupp, NULL, NULL, 0 }, /* device */
438: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
439: { roff_unsupp, NULL, NULL, 0 }, /* di */
440: { roff_unsupp, NULL, NULL, 0 }, /* do */
441: { roff_ds, NULL, NULL, 0 }, /* ds */
442: { roff_ds, NULL, NULL, 0 }, /* ds1 */
443: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
444: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 445: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 446: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
447: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
448: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
449: { roff_unsupp, NULL, NULL, 0 }, /* em */
450: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 451: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 452: { roff_unsupp, NULL, NULL, 0 }, /* EP */
453: { roff_EQ, NULL, NULL, 0 }, /* EQ */
454: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
455: { roff_unsupp, NULL, NULL, 0 }, /* ev */
456: { roff_unsupp, NULL, NULL, 0 }, /* evc */
457: { roff_unsupp, NULL, NULL, 0 }, /* ex */
458: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
459: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
460: { roff_unsupp, NULL, NULL, 0 }, /* fc */
461: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
462: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
463: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
464: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
465: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
466: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
467: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
468: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
469: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
470: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
471: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
472: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
473: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
474: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
475: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
476: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
477: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
478: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
479: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
480: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
481: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
482: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
483: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
484: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
485: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
486: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
487: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
488: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
489: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
490: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
491: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
492: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
493: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
494: { roff_unsupp, NULL, NULL, 0 }, /* index */
495: { roff_it, NULL, NULL, 0 }, /* it */
496: { roff_unsupp, NULL, NULL, 0 }, /* itc */
497: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
498: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
499: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
500: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
501: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
502: { roff_unsupp, NULL, NULL, 0 }, /* lc */
503: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
504: { roff_unsupp, NULL, NULL, 0 }, /* lds */
505: { roff_unsupp, NULL, NULL, 0 }, /* length */
506: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
507: { roff_insec, NULL, NULL, 0 }, /* lf */
508: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
509: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
510: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
511: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
512: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
513: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
514: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
515: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
516: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
517: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
518: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
519: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
520: { roff_insec, NULL, NULL, 0 }, /* mso */
521: { roff_line_ignore, NULL, NULL, 0 }, /* na */
522: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
523: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
524: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
525: { roff_unsupp, NULL, NULL, 0 }, /* nm */
526: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 527: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 528: { roff_nr, NULL, NULL, 0 }, /* nr */
529: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
530: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
531: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
532: { roff_insec, NULL, NULL, 0 }, /* nx */
533: { roff_insec, NULL, NULL, 0 }, /* open */
534: { roff_insec, NULL, NULL, 0 }, /* opena */
535: { roff_line_ignore, NULL, NULL, 0 }, /* os */
536: { roff_unsupp, NULL, NULL, 0 }, /* output */
537: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
538: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
539: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
540: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
541: { roff_insec, NULL, NULL, 0 }, /* pi */
542: { roff_unsupp, NULL, NULL, 0 }, /* PI */
543: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
544: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
545: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
546: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
547: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
548: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
549: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
550: { roff_insec, NULL, NULL, 0 }, /* pso */
551: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
552: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
553: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
554: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
555: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 schwarze 556: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 557: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
558: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
559: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 560: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 561: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
562: { roff_rr, NULL, NULL, 0 }, /* rr */
563: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
564: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
565: { roff_unsupp, NULL, NULL, 0 }, /* schar */
566: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
567: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 schwarze 568: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 569: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
570: { roff_so, NULL, NULL, 0 }, /* so */
571: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
572: { roff_line_ignore, NULL, NULL, 0 }, /* special */
573: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
574: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
575: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
576: { roff_unsupp, NULL, NULL, 0 }, /* substring */
577: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
578: { roff_insec, NULL, NULL, 0 }, /* sy */
579: { roff_T_, NULL, NULL, 0 }, /* T& */
580: { roff_unsupp, NULL, NULL, 0 }, /* tc */
581: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 582: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 583: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
584: { roff_unsupp, NULL, NULL, 0 }, /* tl */
585: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
586: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
587: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
588: { roff_tr, NULL, NULL, 0 }, /* tr */
589: { roff_line_ignore, NULL, NULL, 0 }, /* track */
590: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
591: { roff_insec, NULL, NULL, 0 }, /* trf */
592: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
593: { roff_unsupp, NULL, NULL, 0 }, /* trin */
594: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
595: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
596: { roff_TS, NULL, NULL, 0 }, /* TS */
597: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
598: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
599: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
600: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
601: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
602: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
603: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
604: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
605: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
606: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
607: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
608: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
609: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.340 schwarze 610: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.295 schwarze 611: { roff_insec, NULL, NULL, 0 }, /* write */
612: { roff_insec, NULL, NULL, 0 }, /* writec */
613: { roff_insec, NULL, NULL, 0 }, /* writem */
614: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
615: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 616: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 617: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 618: };
619:
1.141 kristaps 620: /* Array of injected predefined strings. */
621: #define PREDEFS_MAX 38
622: static const struct predef predefs[PREDEFS_MAX] = {
623: #include "predefs.in"
624: };
625:
1.305 schwarze 626: static int roffce_lines; /* number of input lines to center */
627: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 628: static int roffit_lines; /* number of lines to delay */
629: static char *roffit_macro; /* nil-terminated macro line */
630:
1.207 schwarze 631:
1.266 schwarze 632: /* --- request table ------------------------------------------------------ */
633:
1.295 schwarze 634: struct ohash *
635: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 636: {
1.295 schwarze 637: struct ohash *htab;
638: struct roffreq *req;
639: enum roff_tok tok;
640: size_t sz;
641: unsigned int slot;
1.85 kristaps 642:
1.295 schwarze 643: htab = mandoc_malloc(sizeof(*htab));
644: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 645:
1.295 schwarze 646: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 647: if (roff_name[tok] == NULL)
648: continue;
1.295 schwarze 649: sz = strlen(roff_name[tok]);
650: req = mandoc_malloc(sizeof(*req) + sz + 1);
651: req->tok = tok;
652: memcpy(req->name, roff_name[tok], sz + 1);
653: slot = ohash_qlookup(htab, req->name);
654: ohash_insert(htab, slot, req);
1.85 kristaps 655: }
1.295 schwarze 656: return htab;
1.85 kristaps 657: }
658:
1.295 schwarze 659: void
660: roffhash_free(struct ohash *htab)
1.67 kristaps 661: {
1.295 schwarze 662: struct roffreq *req;
663: unsigned int slot;
1.67 kristaps 664:
1.295 schwarze 665: if (htab == NULL)
666: return;
667: for (req = ohash_first(htab, &slot); req != NULL;
668: req = ohash_next(htab, &slot))
669: free(req);
670: ohash_delete(htab);
671: free(htab);
672: }
673:
674: enum roff_tok
675: roffhash_find(struct ohash *htab, const char *name, size_t sz)
676: {
677: struct roffreq *req;
678: const char *end;
679:
680: if (sz) {
681: end = name + sz;
682: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
683: } else
684: req = ohash_find(htab, ohash_qlookup(htab, name));
685: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 686: }
687:
1.266 schwarze 688: /* --- stack of request blocks -------------------------------------------- */
689:
1.67 kristaps 690: /*
691: * Pop the current node off of the stack of roff instructions currently
1.364 schwarze 692: * pending. Return 1 if it is a loop or 0 otherwise.
1.67 kristaps 693: */
1.340 schwarze 694: static int
1.67 kristaps 695: roffnode_pop(struct roff *r)
696: {
697: struct roffnode *p;
1.340 schwarze 698: int inloop;
1.67 kristaps 699:
1.207 schwarze 700: p = r->last;
1.340 schwarze 701: inloop = p->tok == ROFF_while;
702: r->last = p->parent;
1.106 kristaps 703: free(p->name);
704: free(p->end);
1.67 kristaps 705: free(p);
1.340 schwarze 706: return inloop;
1.67 kristaps 707: }
708:
709: /*
710: * Push a roff node onto the instruction stack. This must later be
711: * removed with roffnode_pop().
712: */
1.98 schwarze 713: static void
1.294 schwarze 714: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 715: int line, int col)
1.67 kristaps 716: {
717: struct roffnode *p;
718:
1.98 schwarze 719: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 720: p->tok = tok;
1.106 kristaps 721: if (name)
722: p->name = mandoc_strdup(name);
1.67 kristaps 723: p->parent = r->last;
724: p->line = line;
725: p->col = col;
1.198 schwarze 726: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 727:
728: r->last = p;
729: }
730:
1.266 schwarze 731: /* --- roff parser state data management ---------------------------------- */
732:
1.67 kristaps 733: static void
734: roff_free1(struct roff *r)
735: {
1.167 kristaps 736: int i;
1.67 kristaps 737:
1.346 schwarze 738: tbl_free(r->first_tbl);
1.113 kristaps 739: r->first_tbl = r->last_tbl = r->tbl = NULL;
740:
1.347 schwarze 741: eqn_free(r->last_eqn);
1.319 schwarze 742: r->last_eqn = r->eqn = NULL;
1.125 kristaps 743:
1.339 schwarze 744: while (r->mstackpos >= 0)
745: roff_userret(r);
746:
1.67 kristaps 747: while (r->last)
748: roffnode_pop(r);
1.109 kristaps 749:
1.223 schwarze 750: free (r->rstack);
751: r->rstack = NULL;
752: r->rstacksz = 0;
753: r->rstackpos = -1;
754:
755: roff_freereg(r->regtab);
756: r->regtab = NULL;
757:
1.167 kristaps 758: roff_freestr(r->strtab);
1.306 schwarze 759: roff_freestr(r->rentab);
1.167 kristaps 760: roff_freestr(r->xmbtab);
1.306 schwarze 761: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 762:
763: if (r->xtab)
764: for (i = 0; i < 128; i++)
765: free(r->xtab[i].p);
766: free(r->xtab);
767: r->xtab = NULL;
1.67 kristaps 768: }
769:
770: void
771: roff_reset(struct roff *r)
772: {
773: roff_free1(r);
1.227 schwarze 774: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 775: r->control = '\0';
776: r->escape = '\\';
1.307 schwarze 777: roffce_lines = 0;
778: roffce_node = NULL;
779: roffit_lines = 0;
780: roffit_macro = NULL;
1.67 kristaps 781: }
782:
783: void
784: roff_free(struct roff *r)
785: {
1.339 schwarze 786: int i;
787:
1.67 kristaps 788: roff_free1(r);
1.339 schwarze 789: for (i = 0; i < r->mstacksz; i++)
790: free(r->mstack[i].argv);
791: free(r->mstack);
1.295 schwarze 792: roffhash_free(r->reqtab);
1.67 kristaps 793: free(r);
794: }
795:
796: struct roff *
1.351 schwarze 797: roff_alloc(int options)
1.67 kristaps 798: {
799: struct roff *r;
800:
1.98 schwarze 801: r = mandoc_calloc(1, sizeof(struct roff));
1.328 schwarze 802: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.199 schwarze 803: r->options = options;
1.227 schwarze 804: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 805: r->mstackpos = -1;
1.82 kristaps 806: r->rstackpos = -1;
1.303 schwarze 807: r->escape = '\\';
1.277 schwarze 808: return r;
1.265 schwarze 809: }
810:
1.266 schwarze 811: /* --- syntax tree state data management ---------------------------------- */
812:
1.265 schwarze 813: static void
814: roff_man_free1(struct roff_man *man)
815: {
1.356 schwarze 816: if (man->meta.first != NULL)
817: roff_node_delete(man, man->meta.first);
1.265 schwarze 818: free(man->meta.msec);
819: free(man->meta.vol);
820: free(man->meta.os);
821: free(man->meta.arch);
822: free(man->meta.title);
823: free(man->meta.name);
824: free(man->meta.date);
1.356 schwarze 825: free(man->meta.sodest);
1.265 schwarze 826: }
827:
1.357 schwarze 828: void
829: roff_state_reset(struct roff_man *man)
830: {
831: man->last = man->meta.first;
832: man->last_es = NULL;
833: man->flags = 0;
834: man->lastsec = man->lastnamed = SEC_NONE;
835: man->next = ROFF_NEXT_CHILD;
836: roff_setreg(man->roff, "nS", 0, '=');
837: }
838:
1.265 schwarze 839: static void
840: roff_man_alloc1(struct roff_man *man)
841: {
842: memset(&man->meta, 0, sizeof(man->meta));
1.356 schwarze 843: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
844: man->meta.first->type = ROFFT_ROOT;
845: man->meta.macroset = MACROSET_NONE;
1.357 schwarze 846: roff_state_reset(man);
1.265 schwarze 847: }
848:
849: void
850: roff_man_reset(struct roff_man *man)
851: {
852: roff_man_free1(man);
853: roff_man_alloc1(man);
854: }
855:
856: void
857: roff_man_free(struct roff_man *man)
858: {
859: roff_man_free1(man);
860: free(man);
861: }
862:
863: struct roff_man *
1.351 schwarze 864: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.265 schwarze 865: {
866: struct roff_man *man;
867:
868: man = mandoc_calloc(1, sizeof(*man));
869: man->roff = roff;
1.316 schwarze 870: man->os_s = os_s;
1.265 schwarze 871: man->quick = quick;
872: roff_man_alloc1(man);
1.296 schwarze 873: roff->man = man;
1.277 schwarze 874: return man;
1.67 kristaps 875: }
876:
1.266 schwarze 877: /* --- syntax tree handling ----------------------------------------------- */
878:
879: struct roff_node *
880: roff_node_alloc(struct roff_man *man, int line, int pos,
881: enum roff_type type, int tok)
882: {
883: struct roff_node *n;
884:
885: n = mandoc_calloc(1, sizeof(*n));
886: n->line = line;
887: n->pos = pos;
888: n->tok = tok;
889: n->type = type;
890: n->sec = man->lastsec;
891:
892: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 893: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 894: else
1.285 schwarze 895: n->flags &= ~NODE_SYNPRETTY;
1.360 schwarze 896: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.359 schwarze 897: n->flags |= NODE_NOFILL;
898: else
899: n->flags &= ~NODE_NOFILL;
1.266 schwarze 900: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 901: n->flags |= NODE_LINE;
1.266 schwarze 902: man->flags &= ~MDOC_NEWLINE;
903:
1.277 schwarze 904: return n;
1.266 schwarze 905: }
906:
907: void
908: roff_node_append(struct roff_man *man, struct roff_node *n)
909: {
910:
911: switch (man->next) {
912: case ROFF_NEXT_SIBLING:
1.281 schwarze 913: if (man->last->next != NULL) {
914: n->next = man->last->next;
915: man->last->next->prev = n;
916: } else
917: man->last->parent->last = n;
1.266 schwarze 918: man->last->next = n;
919: n->prev = man->last;
920: n->parent = man->last->parent;
921: break;
922: case ROFF_NEXT_CHILD:
1.287 schwarze 923: if (man->last->child != NULL) {
924: n->next = man->last->child;
925: man->last->child->prev = n;
926: } else
927: man->last->last = n;
1.266 schwarze 928: man->last->child = n;
929: n->parent = man->last;
930: break;
931: default:
932: abort();
933: }
1.282 schwarze 934: man->last = n;
1.266 schwarze 935:
936: switch (n->type) {
937: case ROFFT_HEAD:
938: n->parent->head = n;
939: break;
940: case ROFFT_BODY:
1.282 schwarze 941: if (n->end != ENDBODY_NOT)
942: return;
1.266 schwarze 943: n->parent->body = n;
944: break;
945: case ROFFT_TAIL:
946: n->parent->tail = n;
947: break;
948: default:
1.282 schwarze 949: return;
1.266 schwarze 950: }
1.282 schwarze 951:
952: /*
953: * Copy over the normalised-data pointer of our parent. Not
954: * everybody has one, but copying a null pointer is fine.
955: */
956:
957: n->norm = n->parent->norm;
958: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 959: }
960:
1.267 schwarze 961: void
962: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
963: {
964: struct roff_node *n;
965:
966: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
967: n->string = roff_strdup(man->roff, word);
968: roff_node_append(man, n);
1.286 schwarze 969: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 970: man->next = ROFF_NEXT_SIBLING;
971: }
972:
973: void
974: roff_word_append(struct roff_man *man, const char *word)
975: {
976: struct roff_node *n;
977: char *addstr, *newstr;
978:
979: n = man->last;
980: addstr = roff_strdup(man->roff, word);
981: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
982: free(addstr);
983: free(n->string);
984: n->string = newstr;
985: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 986: }
987:
988: void
989: roff_elem_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_ELEM, tok);
994: roff_node_append(man, n);
995: man->next = ROFF_NEXT_CHILD;
996: }
997:
998: struct roff_node *
999: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1000: {
1001: struct roff_node *n;
1002:
1003: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1004: roff_node_append(man, n);
1005: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1006: return n;
1.267 schwarze 1007: }
1008:
1.266 schwarze 1009: struct roff_node *
1010: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1011: {
1012: struct roff_node *n;
1013:
1014: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1015: roff_node_append(man, n);
1016: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1017: return n;
1.266 schwarze 1018: }
1019:
1020: struct roff_node *
1021: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1022: {
1023: struct roff_node *n;
1024:
1025: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1026: roff_node_append(man, n);
1027: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1028: return n;
1.267 schwarze 1029: }
1030:
1.321 schwarze 1031: static void
1.346 schwarze 1032: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1033: {
1034: struct roff_node *n;
1.346 schwarze 1035: struct tbl_span *span;
1.267 schwarze 1036:
1.356 schwarze 1037: if (man->meta.macroset == MACROSET_MAN)
1.302 schwarze 1038: man_breakscope(man, ROFF_TS);
1.321 schwarze 1039: while ((span = tbl_span(tbl)) != NULL) {
1.346 schwarze 1040: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1041: n->span = span;
1042: roff_node_append(man, n);
1043: n->flags |= NODE_VALID | NODE_ENDED;
1044: man->next = ROFF_NEXT_SIBLING;
1045: }
1.266 schwarze 1046: }
1047:
1048: void
1049: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1050: {
1051:
1052: /* Adjust siblings. */
1053:
1054: if (n->prev)
1055: n->prev->next = n->next;
1056: if (n->next)
1057: n->next->prev = n->prev;
1058:
1059: /* Adjust parent. */
1060:
1061: if (n->parent != NULL) {
1062: if (n->parent->child == n)
1063: n->parent->child = n->next;
1064: if (n->parent->last == n)
1065: n->parent->last = n->prev;
1066: }
1067:
1068: /* Adjust parse point. */
1069:
1070: if (man == NULL)
1071: return;
1072: if (man->last == n) {
1073: if (n->prev == NULL) {
1074: man->last = n->parent;
1075: man->next = ROFF_NEXT_CHILD;
1076: } else {
1077: man->last = n->prev;
1078: man->next = ROFF_NEXT_SIBLING;
1079: }
1080: }
1.356 schwarze 1081: if (man->meta.first == n)
1082: man->meta.first = NULL;
1.344 schwarze 1083: }
1084:
1085: void
1086: roff_node_relink(struct roff_man *man, struct roff_node *n)
1087: {
1088: roff_node_unlink(man, n);
1089: n->prev = n->next = NULL;
1090: roff_node_append(man, n);
1.266 schwarze 1091: }
1092:
1093: void
1094: roff_node_free(struct roff_node *n)
1095: {
1096:
1097: if (n->args != NULL)
1098: mdoc_argv_free(n->args);
1099: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1100: free(n->norm);
1.347 schwarze 1101: eqn_box_free(n->eqn);
1.266 schwarze 1102: free(n->string);
1103: free(n);
1104: }
1105:
1106: void
1107: roff_node_delete(struct roff_man *man, struct roff_node *n)
1108: {
1109:
1110: while (n->child != NULL)
1111: roff_node_delete(man, n->child);
1112: roff_node_unlink(man, n);
1113: roff_node_free(n);
1.269 schwarze 1114: }
1115:
1116: void
1117: deroff(char **dest, const struct roff_node *n)
1118: {
1119: char *cp;
1120: size_t sz;
1121:
1122: if (n->type != ROFFT_TEXT) {
1123: for (n = n->child; n != NULL; n = n->next)
1124: deroff(dest, n);
1125: return;
1126: }
1127:
1.288 schwarze 1128: /* Skip leading whitespace. */
1.269 schwarze 1129:
1.288 schwarze 1130: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1131: if (cp[0] == '\\' && cp[1] != '\0' &&
1132: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1133: cp++;
1.288 schwarze 1134: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1135: break;
1136: }
1137:
1.289 schwarze 1138: /* Skip trailing backslash. */
1139:
1140: sz = strlen(cp);
1.290 schwarze 1141: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1142: sz--;
1143:
1.269 schwarze 1144: /* Skip trailing whitespace. */
1145:
1.289 schwarze 1146: for (; sz; sz--)
1.269 schwarze 1147: if ( ! isspace((unsigned char)cp[sz-1]))
1148: break;
1149:
1150: /* Skip empty strings. */
1151:
1152: if (sz == 0)
1153: return;
1154:
1155: if (*dest == NULL) {
1156: *dest = mandoc_strndup(cp, sz);
1157: return;
1158: }
1159:
1160: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1161: free(*dest);
1162: *dest = cp;
1.266 schwarze 1163: }
1164:
1165: /* --- main functions of the roff parser ---------------------------------- */
1166:
1.94 kristaps 1167: /*
1.355 schwarze 1168: * In the current line, expand escape sequences that produce parsable
1169: * input text. Also check the syntax of the remaining escape sequences,
1170: * which typically produce output glyphs or change formatter state.
1.154 kristaps 1171: */
1.340 schwarze 1172: static int
1.355 schwarze 1173: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char newesc)
1.94 kristaps 1174: {
1.339 schwarze 1175: struct mctx *ctx; /* current macro call context */
1.208 schwarze 1176: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1177: struct roff_node *n; /* used for header comments */
1.205 schwarze 1178: const char *start; /* start of the string to process */
1.209 schwarze 1179: char *stesc; /* start of an escape sequence ('\\') */
1.352 schwarze 1180: const char *esct; /* type of esccape sequence */
1.328 schwarze 1181: char *ep; /* end of comment string */
1.108 schwarze 1182: const char *stnam; /* start of the name, after "[(*" */
1183: const char *cp; /* end of the name, e.g. before ']' */
1184: const char *res; /* the string to be substituted */
1.238 schwarze 1185: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1186: size_t maxl; /* expected length of the escape name */
1187: size_t naml; /* actual length of the escape name */
1.339 schwarze 1188: size_t asz; /* length of the replacement */
1189: size_t rsz; /* length of the rest of the string */
1.237 schwarze 1190: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1191: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1192: int npos; /* position in numeric expression */
1.218 schwarze 1193: int arg_complete; /* argument not interrupted by eol */
1.339 schwarze 1194: int quote_args; /* true for \\$@, false for \\$* */
1.303 schwarze 1195: int done; /* no more input available */
1.315 schwarze 1196: int deftype; /* type of definition to paste */
1.323 schwarze 1197: int rcsid; /* kind of RCS id seen */
1.352 schwarze 1198: enum mandocerr err; /* for escape sequence problems */
1.327 schwarze 1199: char sign; /* increment number register */
1.206 schwarze 1200: char term; /* character terminating the escape */
1.94 kristaps 1201:
1.303 schwarze 1202: /* Search forward for comments. */
1203:
1204: done = 0;
1205: start = buf->buf + pos;
1206: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1.355 schwarze 1207: if (stesc[0] != newesc || stesc[1] == '\0')
1.303 schwarze 1208: continue;
1209: stesc++;
1210: if (*stesc != '"' && *stesc != '#')
1211: continue;
1.313 schwarze 1212:
1213: /* Comment found, look for RCS id. */
1214:
1.323 schwarze 1215: rcsid = 0;
1.313 schwarze 1216: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1217: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1218: cp += 8;
1219: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1220: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1221: cp += 7;
1222: }
1223: if (cp != NULL &&
1224: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1225: strchr(cp, '$') != NULL) {
1.323 schwarze 1226: if (r->man->meta.rcsids & rcsid)
1.350 schwarze 1227: mandoc_msg(MANDOCERR_RCS_REP, ln,
1228: (int)(stesc - buf->buf) + 1,
1229: "%s", stesc + 1);
1.323 schwarze 1230: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1231: }
1.313 schwarze 1232:
1233: /* Handle trailing whitespace. */
1234:
1.328 schwarze 1235: ep = strchr(stesc--, '\0') - 1;
1236: if (*ep == '\n') {
1.303 schwarze 1237: done = 1;
1.328 schwarze 1238: ep--;
1.303 schwarze 1239: }
1.328 schwarze 1240: if (*ep == ' ' || *ep == '\t')
1.350 schwarze 1241: mandoc_msg(MANDOCERR_SPACE_EOL,
1242: ln, (int)(ep - buf->buf), NULL);
1.328 schwarze 1243:
1244: /*
1245: * Save comments preceding the title macro
1246: * in the syntax tree.
1247: */
1248:
1.355 schwarze 1249: if (newesc != ASCII_ESC && r->format == 0) {
1.328 schwarze 1250: while (*ep == ' ' || *ep == '\t')
1251: ep--;
1252: ep[1] = '\0';
1253: n = roff_node_alloc(r->man,
1254: ln, stesc + 1 - buf->buf,
1255: ROFFT_COMMENT, TOKEN_NONE);
1256: n->string = mandoc_strdup(stesc + 2);
1257: roff_node_append(r->man, n);
1258: n->flags |= NODE_VALID | NODE_ENDED;
1259: r->man->next = ROFF_NEXT_SIBLING;
1260: }
1261:
1.334 schwarze 1262: /* Line continuation with comment. */
1263:
1264: if (stesc[1] == '#') {
1265: *stesc = '\0';
1.340 schwarze 1266: return ROFF_IGN | ROFF_APPEND;
1.334 schwarze 1267: }
1268:
1269: /* Discard normal comments. */
1.328 schwarze 1270:
1.335 schwarze 1271: while (stesc > start && stesc[-1] == ' ' &&
1272: (stesc == start + 1 || stesc[-2] != '\\'))
1.303 schwarze 1273: stesc--;
1274: *stesc = '\0';
1275: break;
1276: }
1277: if (stesc == start)
1278: return ROFF_CONT;
1279: stesc--;
1280:
1281: /* Notice the end of the input. */
1282:
1283: if (*stesc == '\n') {
1284: *stesc-- = '\0';
1285: done = 1;
1286: }
1287:
1.170 schwarze 1288: expand_count = 0;
1.303 schwarze 1289: while (stesc >= start) {
1.355 schwarze 1290: if (*stesc != newesc) {
1.170 schwarze 1291:
1.355 schwarze 1292: /*
1293: * If we have a non-standard escape character,
1294: * escape literal backslashes because all
1295: * processing in subsequent functions uses
1296: * the standard escaping rules.
1297: */
1.205 schwarze 1298:
1.355 schwarze 1299: if (newesc != ASCII_ESC && *stesc == '\\') {
1.303 schwarze 1300: *stesc = '\0';
1301: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1302: buf->buf, stesc + 1) + 1;
1303: start = nbuf + pos;
1304: stesc = nbuf + (stesc - buf->buf);
1305: free(buf->buf);
1306: buf->buf = nbuf;
1307: }
1.355 schwarze 1308:
1309: /* Search backwards for the next escape. */
1310:
1.303 schwarze 1311: stesc--;
1.205 schwarze 1312: continue;
1.303 schwarze 1313: }
1.205 schwarze 1314:
1315: /* If it is escaped, skip it. */
1316:
1317: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1318: if (*cp != r->escape)
1.205 schwarze 1319: break;
1320:
1.238 schwarze 1321: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1322: while (stesc > cp)
1323: *stesc-- = '\\';
1.205 schwarze 1324: continue;
1.303 schwarze 1325: } else if (stesc[1] != '\0') {
1326: *stesc = '\\';
1327: } else {
1328: *stesc-- = '\0';
1329: if (done)
1330: continue;
1331: else
1.340 schwarze 1332: return ROFF_IGN | ROFF_APPEND;
1.205 schwarze 1333: }
1.108 schwarze 1334:
1.206 schwarze 1335: /* Decide whether to expand or to check only. */
1.108 schwarze 1336:
1.206 schwarze 1337: term = '\0';
1.205 schwarze 1338: cp = stesc + 1;
1.352 schwarze 1339: if (*cp == 'E')
1340: cp++;
1341: esct = cp;
1342: switch (*esct) {
1.207 schwarze 1343: case '*':
1.339 schwarze 1344: case '$':
1.181 schwarze 1345: res = NULL;
1346: break;
1.207 schwarze 1347: case 'B':
1348: case 'w':
1.206 schwarze 1349: term = cp[1];
1350: /* FALLTHROUGH */
1.207 schwarze 1351: case 'n':
1.327 schwarze 1352: sign = cp[1];
1353: if (sign == '+' || sign == '-')
1354: cp++;
1.181 schwarze 1355: res = ubuf;
1356: break;
1357: default:
1.352 schwarze 1358: err = MANDOCERR_OK;
1359: switch(mandoc_escape(&cp, &stnam, &inaml)) {
1360: case ESCAPE_SPECIAL:
1361: if (mchars_spec2cp(stnam, inaml) >= 0)
1362: break;
1363: /* FALLTHROUGH */
1364: case ESCAPE_ERROR:
1365: err = MANDOCERR_ESC_BAD;
1366: break;
1367: case ESCAPE_UNDEF:
1368: err = MANDOCERR_ESC_UNDEF;
1369: break;
1370: case ESCAPE_UNSUPP:
1371: err = MANDOCERR_ESC_UNSUPP;
1372: break;
1373: default:
1374: break;
1375: }
1376: if (err != MANDOCERR_OK)
1377: mandoc_msg(err, ln, (int)(stesc - buf->buf),
1.219 schwarze 1378: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1379: stesc--;
1.205 schwarze 1380: continue;
1.152 kristaps 1381: }
1382:
1.205 schwarze 1383: if (EXPAND_LIMIT < ++expand_count) {
1.350 schwarze 1384: mandoc_msg(MANDOCERR_ROFFLOOP,
1.238 schwarze 1385: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1386: return ROFF_IGN;
1.205 schwarze 1387: }
1.108 schwarze 1388:
1389: /*
1390: * The third character decides the length
1.181 schwarze 1391: * of the name of the string or register.
1.108 schwarze 1392: * Save a pointer to the name.
1393: */
1394:
1.238 schwarze 1395: if (term == '\0') {
1.206 schwarze 1396: switch (*++cp) {
1.207 schwarze 1397: case '\0':
1.206 schwarze 1398: maxl = 0;
1399: break;
1.207 schwarze 1400: case '(':
1.206 schwarze 1401: cp++;
1402: maxl = 2;
1403: break;
1.207 schwarze 1404: case '[':
1.206 schwarze 1405: cp++;
1406: term = ']';
1407: maxl = 0;
1408: break;
1409: default:
1410: maxl = 1;
1411: break;
1412: }
1413: } else {
1414: cp += 2;
1.94 kristaps 1415: maxl = 0;
1416: }
1.108 schwarze 1417: stnam = cp;
1.94 kristaps 1418:
1.108 schwarze 1419: /* Advance to the end of the name. */
1.94 kristaps 1420:
1.253 schwarze 1421: naml = 0;
1.218 schwarze 1422: arg_complete = 1;
1.253 schwarze 1423: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1424: if (*cp == '\0') {
1.350 schwarze 1425: mandoc_msg(MANDOCERR_ESC_BAD, ln,
1426: (int)(stesc - buf->buf), "%s", stesc);
1.218 schwarze 1427: arg_complete = 0;
1.206 schwarze 1428: break;
1.153 kristaps 1429: }
1.238 schwarze 1430: if (maxl == 0 && *cp == term) {
1.206 schwarze 1431: cp++;
1.253 schwarze 1432: break;
1433: }
1.352 schwarze 1434: if (*cp++ != '\\' || *esct != 'w') {
1.253 schwarze 1435: naml++;
1436: continue;
1437: }
1438: switch (mandoc_escape(&cp, NULL, NULL)) {
1439: case ESCAPE_SPECIAL:
1440: case ESCAPE_UNICODE:
1441: case ESCAPE_NUMBERED:
1.352 schwarze 1442: case ESCAPE_UNDEF:
1.253 schwarze 1443: case ESCAPE_OVERSTRIKE:
1444: naml++;
1445: break;
1446: default:
1.94 kristaps 1447: break;
1.206 schwarze 1448: }
1.94 kristaps 1449: }
1450:
1.108 schwarze 1451: /*
1452: * Retrieve the replacement string; if it is
1453: * undefined, resume searching for escapes.
1454: */
1455:
1.352 schwarze 1456: switch (*esct) {
1.207 schwarze 1457: case '*':
1.315 schwarze 1458: if (arg_complete) {
1459: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1460: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1461:
1462: /*
1463: * If not overriden, let \*(.T
1464: * through to the formatters.
1465: */
1466:
1467: if (res == NULL && naml == 2 &&
1468: stnam[0] == '.' && stnam[1] == 'T') {
1469: roff_setstrn(&r->strtab,
1470: ".T", 2, NULL, 0, 0);
1471: stesc--;
1472: continue;
1473: }
1.315 schwarze 1474: }
1.206 schwarze 1475: break;
1.339 schwarze 1476: case '$':
1477: if (r->mstackpos < 0) {
1.350 schwarze 1478: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
1479: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1480: break;
1481: }
1482: ctx = r->mstack + r->mstackpos;
1.352 schwarze 1483: npos = esct[1] - '1';
1.339 schwarze 1484: if (npos >= 0 && npos <= 8) {
1485: res = npos < ctx->argc ?
1486: ctx->argv[npos] : "";
1487: break;
1488: }
1.352 schwarze 1489: if (esct[1] == '*')
1.339 schwarze 1490: quote_args = 0;
1.352 schwarze 1491: else if (esct[1] == '@')
1.339 schwarze 1492: quote_args = 1;
1493: else {
1.350 schwarze 1494: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
1495: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1496: break;
1497: }
1498: asz = 0;
1499: for (npos = 0; npos < ctx->argc; npos++) {
1500: if (npos)
1501: asz++; /* blank */
1502: if (quote_args)
1503: asz += 2; /* quotes */
1504: asz += strlen(ctx->argv[npos]);
1505: }
1506: if (asz != 3) {
1507: rsz = buf->sz - (stesc - buf->buf) - 3;
1508: if (asz < 3)
1509: memmove(stesc + asz, stesc + 3, rsz);
1510: buf->sz += asz - 3;
1511: nbuf = mandoc_realloc(buf->buf, buf->sz);
1512: start = nbuf + pos;
1513: stesc = nbuf + (stesc - buf->buf);
1514: buf->buf = nbuf;
1515: if (asz > 3)
1516: memmove(stesc + asz, stesc + 3, rsz);
1517: }
1518: for (npos = 0; npos < ctx->argc; npos++) {
1519: if (npos)
1520: *stesc++ = ' ';
1521: if (quote_args)
1522: *stesc++ = '"';
1523: cp = ctx->argv[npos];
1524: while (*cp != '\0')
1525: *stesc++ = *cp++;
1526: if (quote_args)
1527: *stesc++ = '"';
1528: }
1529: continue;
1.207 schwarze 1530: case 'B':
1.206 schwarze 1531: npos = 0;
1.218 schwarze 1532: ubuf[0] = arg_complete &&
1.261 schwarze 1533: roff_evalnum(r, ln, stnam, &npos,
1534: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1535: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1536: ubuf[1] = '\0';
1537: break;
1.207 schwarze 1538: case 'n':
1.218 schwarze 1539: if (arg_complete)
1540: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1541: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1542: else
1543: ubuf[0] = '\0';
1.206 schwarze 1544: break;
1.207 schwarze 1545: case 'w':
1.218 schwarze 1546: /* use even incomplete args */
1.208 schwarze 1547: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1548: 24 * (int)naml);
1549: break;
1550: }
1.94 kristaps 1551:
1.238 schwarze 1552: if (res == NULL) {
1.352 schwarze 1553: if (*esct == '*')
1.350 schwarze 1554: mandoc_msg(MANDOCERR_STR_UNDEF,
1555: ln, (int)(stesc - buf->buf),
1.339 schwarze 1556: "%.*s", (int)naml, stnam);
1.142 kristaps 1557: res = "";
1.246 schwarze 1558: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.350 schwarze 1559: mandoc_msg(MANDOCERR_ROFFLOOP,
1.246 schwarze 1560: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1561: return ROFF_IGN;
1.94 kristaps 1562: }
1563:
1.108 schwarze 1564: /* Replace the escape sequence by the string. */
1565:
1.209 schwarze 1566: *stesc = '\0';
1.238 schwarze 1567: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1568: buf->buf, res, cp) + 1;
1.94 kristaps 1569:
1.205 schwarze 1570: /* Prepare for the next replacement. */
1.94 kristaps 1571:
1.205 schwarze 1572: start = nbuf + pos;
1.238 schwarze 1573: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1574: free(buf->buf);
1575: buf->buf = nbuf;
1.154 kristaps 1576: }
1.277 schwarze 1577: return ROFF_CONT;
1.154 kristaps 1578: }
1.353 schwarze 1579:
1580: /*
1581: * Parse a quoted or unquoted roff-style request or macro argument.
1582: * Return a pointer to the parsed argument, which is either the original
1583: * pointer or advanced by one byte in case the argument is quoted.
1584: * NUL-terminate the argument in place.
1585: * Collapse pairs of quotes inside quoted arguments.
1586: * Advance the argument pointer to the next argument,
1587: * or to the NUL byte terminating the argument line.
1588: */
1589: char *
1.355 schwarze 1590: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.353 schwarze 1591: {
1.355 schwarze 1592: struct buf buf;
1593: char *cp, *start;
1594: int newesc, pairs, quoted, white;
1.353 schwarze 1595:
1596: /* Quoting can only start with a new word. */
1597: start = *cpp;
1598: quoted = 0;
1599: if ('"' == *start) {
1600: quoted = 1;
1601: start++;
1602: }
1603:
1.355 schwarze 1604: newesc = pairs = white = 0;
1.353 schwarze 1605: for (cp = start; '\0' != *cp; cp++) {
1606:
1607: /*
1608: * Move the following text left
1609: * after quoted quotes and after "\\" and "\t".
1610: */
1611: if (pairs)
1612: cp[-pairs] = cp[0];
1613:
1614: if ('\\' == cp[0]) {
1615: /*
1616: * In copy mode, translate double to single
1617: * backslashes and backslash-t to literal tabs.
1618: */
1619: switch (cp[1]) {
1620: case 'a':
1621: case 't':
1.354 schwarze 1622: cp[-pairs] = '\t';
1.355 schwarze 1623: pairs++;
1624: cp++;
1625: break;
1.353 schwarze 1626: case '\\':
1.355 schwarze 1627: newesc = 1;
1628: cp[-pairs] = ASCII_ESC;
1.353 schwarze 1629: pairs++;
1630: cp++;
1631: break;
1632: case ' ':
1633: /* Skip escaped blanks. */
1634: if (0 == quoted)
1635: cp++;
1636: break;
1637: default:
1638: break;
1639: }
1640: } else if (0 == quoted) {
1641: if (' ' == cp[0]) {
1642: /* Unescaped blanks end unquoted args. */
1643: white = 1;
1644: break;
1645: }
1646: } else if ('"' == cp[0]) {
1647: if ('"' == cp[1]) {
1648: /* Quoted quotes collapse. */
1649: pairs++;
1650: cp++;
1651: } else {
1652: /* Unquoted quotes end quoted args. */
1653: quoted = 2;
1654: break;
1655: }
1656: }
1657: }
1658:
1659: /* Quoted argument without a closing quote. */
1660: if (1 == quoted)
1661: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1662:
1663: /* NUL-terminate this argument and move to the next one. */
1664: if (pairs)
1665: cp[-pairs] = '\0';
1666: if ('\0' != *cp) {
1667: *cp++ = '\0';
1668: while (' ' == *cp)
1669: cp++;
1670: }
1671: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1672: *cpp = cp;
1673:
1674: if ('\0' == *cp && (white || ' ' == cp[-1]))
1675: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1676:
1.355 schwarze 1677: start = mandoc_strdup(start);
1678: if (newesc == 0)
1679: return start;
1680:
1681: buf.buf = start;
1682: buf.sz = strlen(start) + 1;
1683: buf.next = NULL;
1684: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1685: free(buf.buf);
1686: buf.buf = mandoc_strdup("");
1687: }
1688: return buf.buf;
1.353 schwarze 1689: }
1690:
1.154 kristaps 1691:
1692: /*
1.275 schwarze 1693: * Process text streams.
1.154 kristaps 1694: */
1.340 schwarze 1695: static int
1.305 schwarze 1696: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1697: {
1698: size_t sz;
1699: const char *start;
1.178 schwarze 1700: char *p;
1701: int isz;
1.154 kristaps 1702: enum mandoc_esc esc;
1703:
1.275 schwarze 1704: /* Spring the input line trap. */
1705:
1706: if (roffit_lines == 1) {
1707: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1708: free(buf->buf);
1709: buf->buf = p;
1710: buf->sz = isz + 1;
1711: *offs = 0;
1712: free(roffit_macro);
1713: roffit_lines = 0;
1.277 schwarze 1714: return ROFF_REPARSE;
1.275 schwarze 1715: } else if (roffit_lines > 1)
1716: --roffit_lines;
1717:
1.305 schwarze 1718: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1719: if (roffce_lines < 1) {
1720: r->man->last = roffce_node;
1721: r->man->next = ROFF_NEXT_SIBLING;
1722: roffce_lines = 0;
1723: roffce_node = NULL;
1724: } else
1725: roffce_lines--;
1726: }
1727:
1.275 schwarze 1728: /* Convert all breakable hyphens into ASCII_HYPH. */
1729:
1.238 schwarze 1730: start = p = buf->buf + pos;
1.154 kristaps 1731:
1.238 schwarze 1732: while (*p != '\0') {
1.154 kristaps 1733: sz = strcspn(p, "-\\");
1734: p += sz;
1735:
1.238 schwarze 1736: if (*p == '\0')
1.159 kristaps 1737: break;
1738:
1.238 schwarze 1739: if (*p == '\\') {
1.154 kristaps 1740: /* Skip over escapes. */
1741: p++;
1.189 schwarze 1742: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1743: if (esc == ESCAPE_ERROR)
1.154 kristaps 1744: break;
1.264 schwarze 1745: while (*p == '-')
1746: p++;
1.155 kristaps 1747: continue;
1.159 kristaps 1748: } else if (p == start) {
1.158 kristaps 1749: p++;
1.155 kristaps 1750: continue;
1.158 kristaps 1751: }
1.155 kristaps 1752:
1.171 schwarze 1753: if (isalpha((unsigned char)p[-1]) &&
1754: isalpha((unsigned char)p[1]))
1.155 kristaps 1755: *p = ASCII_HYPH;
1756: p++;
1.94 kristaps 1757: }
1.277 schwarze 1758: return ROFF_CONT;
1.94 kristaps 1759: }
1760:
1.340 schwarze 1761: int
1.238 schwarze 1762: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1763: {
1.294 schwarze 1764: enum roff_tok t;
1.340 schwarze 1765: int e;
1.238 schwarze 1766: int pos; /* parse point */
1.243 schwarze 1767: int spos; /* saved parse point for messages */
1.238 schwarze 1768: int ppos; /* original offset in buf->buf */
1769: int ctl; /* macro line (boolean) */
1770:
1771: ppos = pos = *offs;
1.79 kristaps 1772:
1.230 schwarze 1773: /* Handle in-line equation delimiters. */
1774:
1.236 schwarze 1775: if (r->tbl == NULL &&
1776: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1777: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1778: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1779: if (e == ROFF_REPARSE)
1.277 schwarze 1780: return e;
1.230 schwarze 1781: assert(e == ROFF_CONT);
1782: }
1783:
1784: /* Expand some escape sequences. */
1.94 kristaps 1785:
1.355 schwarze 1786: e = roff_expand(r, buf, ln, pos, r->escape);
1.340 schwarze 1787: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1788: return e;
1.238 schwarze 1789: assert(e == ROFF_CONT);
1.94 kristaps 1790:
1.238 schwarze 1791: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1792:
1.94 kristaps 1793: /*
1.79 kristaps 1794: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1795: * text through the macro's filter.
1796: * Equations process all content themselves.
1797: * Tables process almost all content themselves, but we want
1798: * to warn about macros before passing it there.
1.79 kristaps 1799: */
1.74 kristaps 1800:
1.252 schwarze 1801: if (r->last != NULL && ! ctl) {
1.78 kristaps 1802: t = r->last->tok;
1.238 schwarze 1803: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1804: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1805: return e;
1.340 schwarze 1806: e &= ~ROFF_MASK;
1807: } else
1808: e = ROFF_IGN;
1.319 schwarze 1809: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1810: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1811: return e;
1.319 schwarze 1812: }
1.321 schwarze 1813: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1814: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1815: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1816: return e;
1.321 schwarze 1817: }
1.252 schwarze 1818: if ( ! ctl)
1.340 schwarze 1819: return roff_parsetext(r, buf, pos, offs) | e;
1.228 schwarze 1820:
1821: /* Skip empty request lines. */
1822:
1.238 schwarze 1823: if (buf->buf[pos] == '"') {
1.350 schwarze 1824: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1825: return ROFF_IGN;
1.238 schwarze 1826: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1827: return ROFF_IGN;
1.67 kristaps 1828:
1.79 kristaps 1829: /*
1830: * If a scope is open, go to the child handler for that macro,
1831: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1832: * Don't do so if an equation is open.
1.79 kristaps 1833: */
1.78 kristaps 1834:
1.79 kristaps 1835: if (r->last) {
1836: t = r->last->tok;
1.277 schwarze 1837: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1838: }
1.78 kristaps 1839:
1.243 schwarze 1840: /* No scope is open. This is a new request or macro. */
1841:
1842: spos = pos;
1843: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1844:
1845: /* Tables ignore most macros. */
1846:
1.308 schwarze 1847: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1848: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.350 schwarze 1849: mandoc_msg(MANDOCERR_TBLMACRO,
1850: ln, pos, "%s", buf->buf + spos);
1.308 schwarze 1851: if (t != TOKEN_NONE)
1.277 schwarze 1852: return ROFF_IGN;
1.257 schwarze 1853: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1854: pos++;
1.291 schwarze 1855: while (buf->buf[pos] == ' ')
1.257 schwarze 1856: pos++;
1.321 schwarze 1857: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1858: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1859: return ROFF_IGN;
1.243 schwarze 1860: }
1861:
1.305 schwarze 1862: /* For now, let high level macros abort .ce mode. */
1863:
1864: if (ctl && roffce_node != NULL &&
1.324 schwarze 1865: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1866: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1867: r->man->last = roffce_node;
1868: r->man->next = ROFF_NEXT_SIBLING;
1869: roffce_lines = 0;
1870: roffce_node = NULL;
1871: }
1872:
1.79 kristaps 1873: /*
1.243 schwarze 1874: * This is neither a roff request nor a user-defined macro.
1875: * Let the standard macro set parsers handle it.
1.79 kristaps 1876: */
1.67 kristaps 1877:
1.294 schwarze 1878: if (t == TOKEN_NONE)
1.277 schwarze 1879: return ROFF_CONT;
1.243 schwarze 1880:
1881: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1882:
1.296 schwarze 1883: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1884: }
1885:
1.339 schwarze 1886: /*
1887: * Internal interface function to tell the roff parser that execution
1888: * of the current macro ended. This is required because macro
1889: * definitions usually do not end with a .return request.
1890: */
1891: void
1892: roff_userret(struct roff *r)
1893: {
1894: struct mctx *ctx;
1895: int i;
1896:
1897: assert(r->mstackpos >= 0);
1898: ctx = r->mstack + r->mstackpos;
1899: for (i = 0; i < ctx->argc; i++)
1900: free(ctx->argv[i]);
1901: ctx->argc = 0;
1902: r->mstackpos--;
1903: }
1904:
1.117 kristaps 1905: void
1.74 kristaps 1906: roff_endparse(struct roff *r)
1907: {
1.321 schwarze 1908: if (r->last != NULL)
1.350 schwarze 1909: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1910: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 1911:
1.321 schwarze 1912: if (r->eqn != NULL) {
1.350 schwarze 1913: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 1914: r->eqn->node->line, r->eqn->node->pos, "EQ");
1915: eqn_parse(r->eqn);
1916: r->eqn = NULL;
1.125 kristaps 1917: }
1918:
1.321 schwarze 1919: if (r->tbl != NULL) {
1.346 schwarze 1920: tbl_end(r->tbl, 1);
1.321 schwarze 1921: r->tbl = NULL;
1.117 kristaps 1922: }
1.67 kristaps 1923: }
1924:
1925: /*
1926: * Parse a roff node's type from the input buffer. This must be in the
1927: * form of ".foo xxx" in the usual way.
1928: */
1.294 schwarze 1929: static enum roff_tok
1.214 schwarze 1930: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1931: {
1.214 schwarze 1932: char *cp;
1.106 kristaps 1933: const char *mac;
1934: size_t maclen;
1.315 schwarze 1935: int deftype;
1.294 schwarze 1936: enum roff_tok t;
1.67 kristaps 1937:
1.214 schwarze 1938: cp = buf + *pos;
1939:
1940: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1941: return TOKEN_NONE;
1.67 kristaps 1942:
1.214 schwarze 1943: mac = cp;
1944: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1945:
1.315 schwarze 1946: deftype = ROFFDEF_USER | ROFFDEF_REN;
1947: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1948: switch (deftype) {
1949: case ROFFDEF_USER:
1950: t = ROFF_USERDEF;
1951: break;
1952: case ROFFDEF_REN:
1953: t = ROFF_RENAMED;
1954: break;
1955: default:
1956: t = roffhash_find(r->reqtab, mac, maclen);
1957: break;
1958: }
1.294 schwarze 1959: if (t != TOKEN_NONE)
1.214 schwarze 1960: *pos = cp - buf;
1.325 schwarze 1961: else if (deftype == ROFFDEF_UNDEF) {
1962: /* Using an undefined macro defines it to be empty. */
1963: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1964: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1965: }
1.277 schwarze 1966: return t;
1.67 kristaps 1967: }
1968:
1.266 schwarze 1969: /* --- handling of request blocks ----------------------------------------- */
1970:
1.340 schwarze 1971: static int
1.76 kristaps 1972: roff_cblock(ROFF_ARGS)
1.67 kristaps 1973: {
1974:
1.79 kristaps 1975: /*
1976: * A block-close `..' should only be invoked as a child of an
1977: * ignore macro, otherwise raise a warning and just ignore it.
1978: */
1979:
1.238 schwarze 1980: if (r->last == NULL) {
1.350 schwarze 1981: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 1982: return ROFF_IGN;
1.76 kristaps 1983: }
1.67 kristaps 1984:
1.81 kristaps 1985: switch (r->last->tok) {
1.207 schwarze 1986: case ROFF_am:
1.220 schwarze 1987: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1988: case ROFF_ami:
1989: case ROFF_de:
1.108 schwarze 1990: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1991: case ROFF_dei:
1992: case ROFF_ig:
1.81 kristaps 1993: break;
1994: default:
1.350 schwarze 1995: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 1996: return ROFF_IGN;
1.76 kristaps 1997: }
1.67 kristaps 1998:
1.238 schwarze 1999: if (buf->buf[pos] != '\0')
1.350 schwarze 2000: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 2001: ".. %s", buf->buf + pos);
1.71 kristaps 2002:
2003: roffnode_pop(r);
1.76 kristaps 2004: roffnode_cleanscope(r);
1.277 schwarze 2005: return ROFF_IGN;
1.71 kristaps 2006:
1.67 kristaps 2007: }
2008:
1.364 schwarze 2009: /*
2010: * Pop all nodes ending at the end of the current input line.
2011: * Return the number of loops ended.
2012: */
1.340 schwarze 2013: static int
1.76 kristaps 2014: roffnode_cleanscope(struct roff *r)
1.67 kristaps 2015: {
1.340 schwarze 2016: int inloop;
1.67 kristaps 2017:
1.340 schwarze 2018: inloop = 0;
2019: while (r->last != NULL) {
1.173 schwarze 2020: if (--r->last->endspan != 0)
1.76 kristaps 2021: break;
1.340 schwarze 2022: inloop += roffnode_pop(r);
1.76 kristaps 2023: }
1.340 schwarze 2024: return inloop;
1.67 kristaps 2025: }
2026:
1.364 schwarze 2027: /*
2028: * Handle the closing \} of a conditional block.
2029: * Apart from generating warnings, this only pops nodes.
2030: * Return the number of loops ended.
2031: */
1.340 schwarze 2032: static int
1.195 schwarze 2033: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 2034: {
1.76 kristaps 2035: if (NULL == r->last) {
1.350 schwarze 2036: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2037: return 0;
1.76 kristaps 2038: }
2039:
1.82 kristaps 2040: switch (r->last->tok) {
1.207 schwarze 2041: case ROFF_el:
2042: case ROFF_ie:
2043: case ROFF_if:
1.340 schwarze 2044: case ROFF_while:
1.82 kristaps 2045: break;
2046: default:
1.350 schwarze 2047: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2048: return 0;
1.75 kristaps 2049: }
2050:
1.76 kristaps 2051: if (r->last->endspan > -1) {
1.350 schwarze 2052: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2053: return 0;
1.76 kristaps 2054: }
2055:
1.340 schwarze 2056: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 2057: }
2058:
1.340 schwarze 2059: static int
1.80 kristaps 2060: roff_block(ROFF_ARGS)
1.76 kristaps 2061: {
1.315 schwarze 2062: const char *name, *value;
2063: char *call, *cp, *iname, *rname;
2064: size_t csz, namesz, rsz;
2065: int deftype;
1.106 kristaps 2066:
1.220 schwarze 2067: /* Ignore groff compatibility mode for now. */
1.76 kristaps 2068:
1.238 schwarze 2069: if (tok == ROFF_de1)
1.220 schwarze 2070: tok = ROFF_de;
1.251 schwarze 2071: else if (tok == ROFF_dei1)
2072: tok = ROFF_dei;
1.238 schwarze 2073: else if (tok == ROFF_am1)
1.220 schwarze 2074: tok = ROFF_am;
1.251 schwarze 2075: else if (tok == ROFF_ami1)
2076: tok = ROFF_ami;
1.220 schwarze 2077:
2078: /* Parse the macro name argument. */
2079:
1.238 schwarze 2080: cp = buf->buf + pos;
2081: if (tok == ROFF_ig) {
1.220 schwarze 2082: iname = NULL;
2083: namesz = 0;
2084: } else {
2085: iname = cp;
2086: namesz = roff_getname(r, &cp, ln, ppos);
2087: iname[namesz] = '\0';
2088: }
1.107 kristaps 2089:
1.220 schwarze 2090: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 2091:
1.238 schwarze 2092: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2093: deftype = ROFFDEF_USER;
2094: name = roff_getstrn(r, iname, namesz, &deftype);
2095: if (name == NULL) {
1.350 schwarze 2096: mandoc_msg(MANDOCERR_STR_UNDEF,
2097: ln, (int)(iname - buf->buf),
1.220 schwarze 2098: "%.*s", (int)namesz, iname);
2099: namesz = 0;
2100: } else
2101: namesz = strlen(name);
2102: } else
2103: name = iname;
1.107 kristaps 2104:
1.238 schwarze 2105: if (namesz == 0 && tok != ROFF_ig) {
1.350 schwarze 2106: mandoc_msg(MANDOCERR_REQ_EMPTY,
2107: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2108: return ROFF_IGN;
1.220 schwarze 2109: }
1.80 kristaps 2110:
1.106 kristaps 2111: roffnode_push(r, tok, name, ln, ppos);
2112:
2113: /*
2114: * At the beginning of a `de' macro, clear the existing string
2115: * with the same name, if there is one. New content will be
1.193 schwarze 2116: * appended from roff_block_text() in multiline mode.
1.106 kristaps 2117: */
1.107 kristaps 2118:
1.311 schwarze 2119: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 2120: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 2121: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 2122: } else if (tok == ROFF_am || tok == ROFF_ami) {
2123: deftype = ROFFDEF_ANY;
2124: value = roff_getstrn(r, iname, namesz, &deftype);
2125: switch (deftype) { /* Before appending, ... */
2126: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2127: roff_setstrn(&r->strtab, name, namesz,
2128: value, strlen(value), 0);
2129: break;
2130: case ROFFDEF_REN: /* call original standard macro. */
2131: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2132: (int)strlen(value), value);
2133: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2134: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2135: free(call);
2136: break;
2137: case ROFFDEF_STD: /* rename and call standard macro. */
2138: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2139: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2140: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2141: (int)rsz, rname);
2142: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2143: free(call);
2144: free(rname);
2145: break;
2146: default:
2147: break;
2148: }
1.311 schwarze 2149: }
1.76 kristaps 2150:
1.238 schwarze 2151: if (*cp == '\0')
1.277 schwarze 2152: return ROFF_IGN;
1.78 kristaps 2153:
1.220 schwarze 2154: /* Get the custom end marker. */
1.107 kristaps 2155:
1.220 schwarze 2156: iname = cp;
1.213 schwarze 2157: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 2158:
2159: /* Resolve the end marker if it is indirect. */
2160:
1.238 schwarze 2161: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2162: deftype = ROFFDEF_USER;
2163: name = roff_getstrn(r, iname, namesz, &deftype);
2164: if (name == NULL) {
1.350 schwarze 2165: mandoc_msg(MANDOCERR_STR_UNDEF,
2166: ln, (int)(iname - buf->buf),
1.220 schwarze 2167: "%.*s", (int)namesz, iname);
2168: namesz = 0;
2169: } else
2170: namesz = strlen(name);
2171: } else
2172: name = iname;
2173:
1.213 schwarze 2174: if (namesz)
2175: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2176:
1.238 schwarze 2177: if (*cp != '\0')
1.350 schwarze 2178: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2179: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2180:
1.277 schwarze 2181: return ROFF_IGN;
1.78 kristaps 2182: }
2183:
1.340 schwarze 2184: static int
1.80 kristaps 2185: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2186: {
1.294 schwarze 2187: enum roff_tok t;
1.79 kristaps 2188: int i, j;
2189:
2190: /*
2191: * First check whether a custom macro exists at this level. If
2192: * it does, then check against it. This is some of groff's
2193: * stranger behaviours. If we encountered a custom end-scope
2194: * tag and that tag also happens to be a "real" macro, then we
2195: * need to try interpreting it again as a real macro. If it's
2196: * not, then return ignore. Else continue.
2197: */
2198:
2199: if (r->last->end) {
1.130 kristaps 2200: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2201: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2202: break;
2203:
1.238 schwarze 2204: if (r->last->end[j] == '\0' &&
2205: (buf->buf[i] == '\0' ||
2206: buf->buf[i] == ' ' ||
2207: buf->buf[i] == '\t')) {
1.79 kristaps 2208: roffnode_pop(r);
2209: roffnode_cleanscope(r);
2210:
1.238 schwarze 2211: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2212: i++;
2213:
2214: pos = i;
1.238 schwarze 2215: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2216: TOKEN_NONE)
1.277 schwarze 2217: return ROFF_RERUN;
2218: return ROFF_IGN;
1.79 kristaps 2219: }
2220: }
2221:
2222: /*
2223: * If we have no custom end-query or lookup failed, then try
2224: * pulling it out of the hashtable.
2225: */
2226:
1.238 schwarze 2227: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 2228:
1.238 schwarze 2229: if (t != ROFF_cblock) {
2230: if (tok != ROFF_ig)
2231: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 2232: return ROFF_IGN;
1.106 kristaps 2233: }
1.79 kristaps 2234:
1.277 schwarze 2235: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2236: }
2237:
1.340 schwarze 2238: static int
1.80 kristaps 2239: roff_block_text(ROFF_ARGS)
1.78 kristaps 2240: {
2241:
1.238 schwarze 2242: if (tok != ROFF_ig)
2243: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2244:
1.277 schwarze 2245: return ROFF_IGN;
1.78 kristaps 2246: }
2247:
1.340 schwarze 2248: static int
1.82 kristaps 2249: roff_cond_sub(ROFF_ARGS)
2250: {
1.364 schwarze 2251: struct roffnode *bl;
1.340 schwarze 2252: char *ep;
2253: int endloop, irc, rr;
1.294 schwarze 2254: enum roff_tok t;
1.82 kristaps 2255:
1.340 schwarze 2256: irc = ROFF_IGN;
1.82 kristaps 2257: rr = r->last->rule;
1.340 schwarze 2258: endloop = tok != ROFF_while ? ROFF_IGN :
2259: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2260: if (roffnode_cleanscope(r))
2261: irc |= endloop;
1.144 kristaps 2262:
1.196 schwarze 2263: /*
2264: * If `\}' occurs on a macro line without a preceding macro,
2265: * drop the line completely.
2266: */
2267:
1.238 schwarze 2268: ep = buf->buf + pos;
2269: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 2270: rr = 0;
1.196 schwarze 2271:
1.343 schwarze 2272: /*
2273: * The closing delimiter `\}' rewinds the conditional scope
2274: * but is otherwise ignored when interpreting the line.
2275: */
1.144 kristaps 2276:
1.238 schwarze 2277: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2278: switch (ep[1]) {
2279: case '}':
2280: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2281: if (roff_ccond(r, ln, ep - buf->buf))
2282: irc |= endloop;
1.318 schwarze 2283: break;
2284: case '\0':
2285: ++ep;
2286: break;
2287: default:
2288: ep += 2;
2289: break;
1.197 schwarze 2290: }
1.177 schwarze 2291: }
1.318 schwarze 2292:
2293: /*
2294: * Fully handle known macros when they are structurally
2295: * required or when the conditional evaluated to true.
2296: */
2297:
2298: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.364 schwarze 2299: if (t == ROFF_break) {
2300: if (irc & ROFF_LOOPMASK)
2301: irc = ROFF_IGN | ROFF_LOOPEXIT;
2302: else if (rr) {
2303: for (bl = r->last; bl != NULL; bl = bl->parent) {
2304: bl->rule = 0;
2305: if (bl->tok == ROFF_while)
2306: break;
2307: }
2308: }
2309: } else if (t != TOKEN_NONE &&
2310: (rr || roffs[t].flags & ROFFMAC_STRUCT))
2311: irc |= (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
2312: else
2313: irc |= rr ? ROFF_CONT : ROFF_IGN;
1.340 schwarze 2314: return irc;
1.82 kristaps 2315: }
2316:
1.340 schwarze 2317: static int
1.82 kristaps 2318: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2319: {
1.140 kristaps 2320: char *ep;
1.340 schwarze 2321: int endloop, irc, rr;
1.82 kristaps 2322:
1.340 schwarze 2323: irc = ROFF_IGN;
1.82 kristaps 2324: rr = r->last->rule;
1.340 schwarze 2325: endloop = tok != ROFF_while ? ROFF_IGN :
2326: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2327: if (roffnode_cleanscope(r))
2328: irc |= endloop;
1.82 kristaps 2329:
1.343 schwarze 2330: /*
2331: * If `\}' occurs on a text line with neither preceding
2332: * nor following characters, drop the line completely.
2333: */
2334:
1.238 schwarze 2335: ep = buf->buf + pos;
1.343 schwarze 2336: if (strcmp(ep, "\\}") == 0)
2337: rr = 0;
2338:
2339: /*
2340: * The closing delimiter `\}' rewinds the conditional scope
2341: * but is otherwise ignored when interpreting the line.
2342: */
2343:
1.238 schwarze 2344: while ((ep = strchr(ep, '\\')) != NULL) {
1.343 schwarze 2345: switch (ep[1]) {
2346: case '}':
2347: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2348: if (roff_ccond(r, ln, ep - buf->buf))
1.340 schwarze 2349: irc |= endloop;
1.343 schwarze 2350: break;
2351: case '\0':
2352: ++ep;
2353: break;
2354: default:
2355: ep += 2;
2356: break;
1.197 schwarze 2357: }
1.78 kristaps 2358: }
1.340 schwarze 2359: if (rr)
2360: irc |= ROFF_CONT;
2361: return irc;
1.74 kristaps 2362: }
2363:
1.266 schwarze 2364: /* --- handling of numeric and conditional expressions -------------------- */
2365:
1.204 schwarze 2366: /*
2367: * Parse a single signed integer number. Stop at the first non-digit.
2368: * If there is at least one digit, return success and advance the
2369: * parse point, else return failure and let the parse point unchanged.
2370: * Ignore overflows, treat them just like the C language.
2371: */
1.184 schwarze 2372: static int
1.261 schwarze 2373: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2374: {
1.261 schwarze 2375: int myres, scaled, n, p;
1.206 schwarze 2376:
2377: if (NULL == res)
2378: res = &myres;
1.184 schwarze 2379:
2380: p = *pos;
2381: n = v[p] == '-';
1.261 schwarze 2382: if (n || v[p] == '+')
1.184 schwarze 2383: p++;
2384:
1.261 schwarze 2385: if (flags & ROFFNUM_WHITE)
2386: while (isspace((unsigned char)v[p]))
2387: p++;
2388:
1.184 schwarze 2389: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2390: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2391: if (p == *pos + n)
2392: return 0;
2393:
2394: if (n)
2395: *res = -*res;
2396:
1.254 schwarze 2397: /* Each number may be followed by one optional scaling unit. */
2398:
2399: switch (v[p]) {
2400: case 'f':
1.261 schwarze 2401: scaled = *res * 65536;
1.254 schwarze 2402: break;
2403: case 'i':
1.261 schwarze 2404: scaled = *res * 240;
1.254 schwarze 2405: break;
2406: case 'c':
1.261 schwarze 2407: scaled = *res * 240 / 2.54;
1.254 schwarze 2408: break;
2409: case 'v':
2410: case 'P':
1.261 schwarze 2411: scaled = *res * 40;
1.254 schwarze 2412: break;
2413: case 'm':
2414: case 'n':
1.261 schwarze 2415: scaled = *res * 24;
1.254 schwarze 2416: break;
2417: case 'p':
1.261 schwarze 2418: scaled = *res * 10 / 3;
1.254 schwarze 2419: break;
2420: case 'u':
1.261 schwarze 2421: scaled = *res;
1.254 schwarze 2422: break;
2423: case 'M':
1.261 schwarze 2424: scaled = *res * 6 / 25;
1.254 schwarze 2425: break;
2426: default:
1.261 schwarze 2427: scaled = *res;
1.254 schwarze 2428: p--;
2429: break;
2430: }
1.261 schwarze 2431: if (flags & ROFFNUM_SCALE)
2432: *res = scaled;
1.254 schwarze 2433:
2434: *pos = p + 1;
1.277 schwarze 2435: return 1;
1.184 schwarze 2436: }
2437:
1.198 schwarze 2438: /*
2439: * Evaluate a string comparison condition.
2440: * The first character is the delimiter.
2441: * Succeed if the string up to its second occurrence
2442: * matches the string up to its third occurence.
2443: * Advance the cursor after the third occurrence
2444: * or lacking that, to the end of the line.
2445: */
2446: static int
2447: roff_evalstrcond(const char *v, int *pos)
2448: {
2449: const char *s1, *s2, *s3;
2450: int match;
2451:
2452: match = 0;
2453: s1 = v + *pos; /* initial delimiter */
2454: s2 = s1 + 1; /* for scanning the first string */
2455: s3 = strchr(s2, *s1); /* for scanning the second string */
2456:
2457: if (NULL == s3) /* found no middle delimiter */
2458: goto out;
2459:
2460: while ('\0' != *++s3) {
2461: if (*s2 != *s3) { /* mismatch */
2462: s3 = strchr(s3, *s1);
2463: break;
2464: }
2465: if (*s3 == *s1) { /* found the final delimiter */
2466: match = 1;
2467: break;
2468: }
2469: s2++;
2470: }
2471:
2472: out:
2473: if (NULL == s3)
2474: s3 = strchr(s2, '\0');
1.242 schwarze 2475: else if (*s3 != '\0')
1.198 schwarze 2476: s3++;
2477: *pos = s3 - v;
1.277 schwarze 2478: return match;
1.198 schwarze 2479: }
2480:
1.204 schwarze 2481: /*
2482: * Evaluate an optionally negated single character, numerical,
2483: * or string condition.
2484: */
1.198 schwarze 2485: static int
1.271 schwarze 2486: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2487: {
1.336 schwarze 2488: const char *start, *end;
2489: char *cp, *name;
2490: size_t sz;
2491: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2492:
1.198 schwarze 2493: if ('!' == v[*pos]) {
2494: wanttrue = 0;
2495: (*pos)++;
2496: } else
2497: wanttrue = 1;
2498:
1.88 kristaps 2499: switch (v[*pos]) {
1.240 schwarze 2500: case '\0':
1.277 schwarze 2501: return 0;
1.207 schwarze 2502: case 'n':
2503: case 'o':
1.88 kristaps 2504: (*pos)++;
1.277 schwarze 2505: return wanttrue;
1.207 schwarze 2506: case 'e':
2507: case 't':
1.239 schwarze 2508: case 'v':
1.88 kristaps 2509: (*pos)++;
1.277 schwarze 2510: return !wanttrue;
1.336 schwarze 2511: case 'c':
2512: do {
2513: (*pos)++;
2514: } while (v[*pos] == ' ');
2515:
2516: /*
2517: * Quirk for groff compatibility:
2518: * The horizontal tab is neither available nor unavailable.
2519: */
2520:
2521: if (v[*pos] == '\t') {
2522: (*pos)++;
2523: return 0;
2524: }
2525:
2526: /* Printable ASCII characters are available. */
2527:
2528: if (v[*pos] != '\\') {
2529: (*pos)++;
2530: return wanttrue;
2531: }
2532:
2533: end = v + ++*pos;
2534: switch (mandoc_escape(&end, &start, &len)) {
2535: case ESCAPE_SPECIAL:
2536: istrue = mchars_spec2cp(start, len) != -1;
2537: break;
2538: case ESCAPE_UNICODE:
2539: istrue = 1;
2540: break;
2541: case ESCAPE_NUMBERED:
2542: istrue = mchars_num2char(start, len) != -1;
2543: break;
2544: default:
2545: istrue = !wanttrue;
2546: break;
2547: }
2548: *pos = end - v;
2549: return istrue == wanttrue;
1.310 schwarze 2550: case 'd':
1.271 schwarze 2551: case 'r':
1.310 schwarze 2552: cp = v + *pos + 1;
2553: while (*cp == ' ')
2554: cp++;
2555: name = cp;
2556: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2557: if (sz == 0)
2558: istrue = 0;
2559: else if (v[*pos] == 'r')
2560: istrue = roff_hasregn(r, name, sz);
2561: else {
2562: deftype = ROFFDEF_ANY;
2563: roff_getstrn(r, name, sz, &deftype);
2564: istrue = !!deftype;
2565: }
1.363 schwarze 2566: *pos = (name + sz) - v;
1.310 schwarze 2567: return istrue == wanttrue;
1.88 kristaps 2568: default:
2569: break;
2570: }
2571:
1.241 schwarze 2572: savepos = *pos;
1.261 schwarze 2573: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2574: return (number > 0) == wanttrue;
1.241 schwarze 2575: else if (*pos == savepos)
1.277 schwarze 2576: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2577: else
1.277 schwarze 2578: return 0;
1.88 kristaps 2579: }
2580:
1.340 schwarze 2581: static int
1.103 kristaps 2582: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2583: {
1.123 schwarze 2584:
1.277 schwarze 2585: return ROFF_IGN;
1.89 kristaps 2586: }
2587:
1.340 schwarze 2588: static int
1.251 schwarze 2589: roff_insec(ROFF_ARGS)
2590: {
2591:
1.350 schwarze 2592: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2593: return ROFF_IGN;
1.251 schwarze 2594: }
2595:
1.340 schwarze 2596: static int
1.251 schwarze 2597: roff_unsupp(ROFF_ARGS)
2598: {
2599:
1.350 schwarze 2600: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2601: return ROFF_IGN;
1.251 schwarze 2602: }
2603:
1.340 schwarze 2604: static int
1.82 kristaps 2605: roff_cond(ROFF_ARGS)
1.74 kristaps 2606: {
1.340 schwarze 2607: int irc;
1.173 schwarze 2608:
2609: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2610:
1.207 schwarze 2611: /*
1.134 kristaps 2612: * An `.el' has no conditional body: it will consume the value
2613: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2614: * defaults to DENY.
1.134 kristaps 2615: *
2616: * If we're not an `el', however, then evaluate the conditional.
2617: */
1.133 kristaps 2618:
1.238 schwarze 2619: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2620: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2621: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2622:
1.134 kristaps 2623: /*
2624: * An if-else will put the NEGATION of the current evaluated
2625: * conditional into the stack of rules.
2626: */
2627:
1.238 schwarze 2628: if (tok == ROFF_ie) {
1.223 schwarze 2629: if (r->rstackpos + 1 == r->rstacksz) {
2630: r->rstacksz += 16;
2631: r->rstack = mandoc_reallocarray(r->rstack,
2632: r->rstacksz, sizeof(int));
1.134 kristaps 2633: }
1.198 schwarze 2634: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2635: }
1.88 kristaps 2636:
2637: /* If the parent has false as its rule, then so do we. */
2638:
1.198 schwarze 2639: if (r->last->parent && !r->last->parent->rule)
2640: r->last->rule = 0;
1.88 kristaps 2641:
2642: /*
1.173 schwarze 2643: * Determine scope.
2644: * If there is nothing on the line after the conditional,
2645: * not even whitespace, use next-line scope.
1.340 schwarze 2646: * Except that .while does not support next-line scope.
1.88 kristaps 2647: */
1.74 kristaps 2648:
1.340 schwarze 2649: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2650: r->last->endspan = 2;
2651: goto out;
2652: }
2653:
1.238 schwarze 2654: while (buf->buf[pos] == ' ')
1.173 schwarze 2655: pos++;
2656:
2657: /* An opening brace requests multiline scope. */
1.75 kristaps 2658:
1.238 schwarze 2659: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2660: r->last->endspan = -1;
2661: pos += 2;
1.272 schwarze 2662: while (buf->buf[pos] == ' ')
2663: pos++;
1.173 schwarze 2664: goto out;
1.207 schwarze 2665: }
1.74 kristaps 2666:
1.77 kristaps 2667: /*
1.173 schwarze 2668: * Anything else following the conditional causes
2669: * single-line scope. Warn if the scope contains
2670: * nothing but trailing whitespace.
1.77 kristaps 2671: */
2672:
1.238 schwarze 2673: if (buf->buf[pos] == '\0')
1.350 schwarze 2674: mandoc_msg(MANDOCERR_COND_EMPTY,
2675: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2676:
1.173 schwarze 2677: r->last->endspan = 1;
1.74 kristaps 2678:
1.173 schwarze 2679: out:
1.75 kristaps 2680: *offs = pos;
1.340 schwarze 2681: irc = ROFF_RERUN;
2682: if (tok == ROFF_while)
2683: irc |= ROFF_WHILE;
2684: return irc;
1.83 schwarze 2685: }
2686:
1.340 schwarze 2687: static int
1.92 schwarze 2688: roff_ds(ROFF_ARGS)
2689: {
1.212 schwarze 2690: char *string;
2691: const char *name;
2692: size_t namesz;
1.96 kristaps 2693:
1.251 schwarze 2694: /* Ignore groff compatibility mode for now. */
2695:
2696: if (tok == ROFF_ds1)
2697: tok = ROFF_ds;
2698: else if (tok == ROFF_as1)
2699: tok = ROFF_as;
2700:
1.96 kristaps 2701: /*
1.212 schwarze 2702: * The first word is the name of the string.
2703: * If it is empty or terminated by an escape sequence,
2704: * abort the `ds' request without defining anything.
1.96 kristaps 2705: */
1.92 schwarze 2706:
1.238 schwarze 2707: name = string = buf->buf + pos;
2708: if (*name == '\0')
1.277 schwarze 2709: return ROFF_IGN;
1.92 schwarze 2710:
1.212 schwarze 2711: namesz = roff_getname(r, &string, ln, pos);
1.363 schwarze 2712: switch (name[namesz]) {
2713: case '\\':
1.277 schwarze 2714: return ROFF_IGN;
1.363 schwarze 2715: case '\t':
2716: string = buf->buf + pos + namesz;
2717: break;
2718: default:
2719: break;
2720: }
1.212 schwarze 2721:
2722: /* Read past the initial double-quote, if any. */
1.238 schwarze 2723: if (*string == '"')
1.92 schwarze 2724: string++;
2725:
1.96 kristaps 2726: /* The rest is the value. */
1.212 schwarze 2727: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2728: ROFF_as == tok);
1.311 schwarze 2729: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2730: return ROFF_IGN;
1.92 schwarze 2731: }
2732:
1.204 schwarze 2733: /*
2734: * Parse a single operator, one or two characters long.
2735: * If the operator is recognized, return success and advance the
2736: * parse point, else return failure and let the parse point unchanged.
2737: */
2738: static int
2739: roff_getop(const char *v, int *pos, char *res)
2740: {
2741:
2742: *res = v[*pos];
2743:
2744: switch (*res) {
1.207 schwarze 2745: case '+':
2746: case '-':
2747: case '*':
2748: case '/':
2749: case '%':
2750: case '&':
2751: case ':':
1.204 schwarze 2752: break;
2753: case '<':
2754: switch (v[*pos + 1]) {
1.207 schwarze 2755: case '=':
1.204 schwarze 2756: *res = 'l';
2757: (*pos)++;
2758: break;
1.207 schwarze 2759: case '>':
1.204 schwarze 2760: *res = '!';
2761: (*pos)++;
2762: break;
1.207 schwarze 2763: case '?':
1.204 schwarze 2764: *res = 'i';
2765: (*pos)++;
2766: break;
2767: default:
2768: break;
2769: }
2770: break;
2771: case '>':
2772: switch (v[*pos + 1]) {
1.207 schwarze 2773: case '=':
1.204 schwarze 2774: *res = 'g';
2775: (*pos)++;
2776: break;
1.207 schwarze 2777: case '?':
1.204 schwarze 2778: *res = 'a';
2779: (*pos)++;
2780: break;
2781: default:
2782: break;
2783: }
2784: break;
2785: case '=':
2786: if ('=' == v[*pos + 1])
2787: (*pos)++;
2788: break;
2789: default:
1.277 schwarze 2790: return 0;
1.204 schwarze 2791: }
2792: (*pos)++;
2793:
1.277 schwarze 2794: return *res;
1.204 schwarze 2795: }
2796:
2797: /*
2798: * Evaluate either a parenthesized numeric expression
2799: * or a single signed integer number.
2800: */
2801: static int
1.235 schwarze 2802: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2803: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2804: {
2805:
2806: if ('(' != v[*pos])
1.277 schwarze 2807: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2808:
2809: (*pos)++;
1.261 schwarze 2810: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2811: return 0;
1.204 schwarze 2812:
1.206 schwarze 2813: /*
2814: * Omission of the closing parenthesis
2815: * is an error in validation mode,
2816: * but ignored in evaluation mode.
2817: */
2818:
1.204 schwarze 2819: if (')' == v[*pos])
2820: (*pos)++;
1.206 schwarze 2821: else if (NULL == res)
1.277 schwarze 2822: return 0;
1.204 schwarze 2823:
1.277 schwarze 2824: return 1;
1.204 schwarze 2825: }
2826:
2827: /*
2828: * Evaluate a complete numeric expression.
2829: * Proceed left to right, there is no concept of precedence.
2830: */
2831: static int
1.235 schwarze 2832: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2833: int *pos, int *res, int flags)
1.204 schwarze 2834: {
2835: int mypos, operand2;
2836: char operator;
2837:
2838: if (NULL == pos) {
2839: mypos = 0;
2840: pos = &mypos;
2841: }
2842:
1.261 schwarze 2843: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2844: while (isspace((unsigned char)v[*pos]))
2845: (*pos)++;
2846:
1.261 schwarze 2847: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2848: return 0;
1.204 schwarze 2849:
2850: while (1) {
1.261 schwarze 2851: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2852: while (isspace((unsigned char)v[*pos]))
2853: (*pos)++;
2854:
2855: if ( ! roff_getop(v, pos, &operator))
2856: break;
2857:
1.261 schwarze 2858: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2859: while (isspace((unsigned char)v[*pos]))
2860: (*pos)++;
2861:
1.261 schwarze 2862: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2863: return 0;
1.204 schwarze 2864:
1.261 schwarze 2865: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2866: while (isspace((unsigned char)v[*pos]))
2867: (*pos)++;
1.206 schwarze 2868:
2869: if (NULL == res)
2870: continue;
1.204 schwarze 2871:
2872: switch (operator) {
1.207 schwarze 2873: case '+':
1.204 schwarze 2874: *res += operand2;
2875: break;
1.207 schwarze 2876: case '-':
1.204 schwarze 2877: *res -= operand2;
2878: break;
1.207 schwarze 2879: case '*':
1.204 schwarze 2880: *res *= operand2;
2881: break;
1.207 schwarze 2882: case '/':
1.244 schwarze 2883: if (operand2 == 0) {
1.235 schwarze 2884: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2885: ln, *pos, "%s", v);
1.234 kristaps 2886: *res = 0;
2887: break;
2888: }
1.204 schwarze 2889: *res /= operand2;
2890: break;
1.207 schwarze 2891: case '%':
1.244 schwarze 2892: if (operand2 == 0) {
2893: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2894: ln, *pos, "%s", v);
1.244 schwarze 2895: *res = 0;
2896: break;
2897: }
1.204 schwarze 2898: *res %= operand2;
2899: break;
1.207 schwarze 2900: case '<':
1.204 schwarze 2901: *res = *res < operand2;
2902: break;
1.207 schwarze 2903: case '>':
1.204 schwarze 2904: *res = *res > operand2;
2905: break;
1.207 schwarze 2906: case 'l':
1.204 schwarze 2907: *res = *res <= operand2;
2908: break;
1.207 schwarze 2909: case 'g':
1.204 schwarze 2910: *res = *res >= operand2;
2911: break;
1.207 schwarze 2912: case '=':
1.204 schwarze 2913: *res = *res == operand2;
2914: break;
1.207 schwarze 2915: case '!':
1.204 schwarze 2916: *res = *res != operand2;
2917: break;
1.207 schwarze 2918: case '&':
1.204 schwarze 2919: *res = *res && operand2;
2920: break;
1.207 schwarze 2921: case ':':
1.204 schwarze 2922: *res = *res || operand2;
2923: break;
1.207 schwarze 2924: case 'i':
1.204 schwarze 2925: if (operand2 < *res)
2926: *res = operand2;
2927: break;
1.207 schwarze 2928: case 'a':
1.204 schwarze 2929: if (operand2 > *res)
2930: *res = operand2;
2931: break;
2932: default:
2933: abort();
2934: }
2935: }
1.277 schwarze 2936: return 1;
1.204 schwarze 2937: }
2938:
1.266 schwarze 2939: /* --- register management ------------------------------------------------ */
2940:
1.180 schwarze 2941: void
1.187 schwarze 2942: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2943: {
1.327 schwarze 2944: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2945: }
2946:
2947: static void
2948: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2949: int val, char sign, int step)
1.326 schwarze 2950: {
1.180 schwarze 2951: struct roffreg *reg;
2952:
2953: /* Search for an existing register with the same name. */
2954: reg = r->regtab;
2955:
1.326 schwarze 2956: while (reg != NULL && (reg->key.sz != len ||
2957: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 2958: reg = reg->next;
1.147 kristaps 2959:
1.180 schwarze 2960: if (NULL == reg) {
2961: /* Create a new register. */
2962: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 2963: reg->key.p = mandoc_strndup(name, len);
2964: reg->key.sz = len;
1.187 schwarze 2965: reg->val = 0;
1.327 schwarze 2966: reg->step = 0;
1.180 schwarze 2967: reg->next = r->regtab;
2968: r->regtab = reg;
2969: }
2970:
1.187 schwarze 2971: if ('+' == sign)
2972: reg->val += val;
2973: else if ('-' == sign)
2974: reg->val -= val;
2975: else
2976: reg->val = val;
1.327 schwarze 2977: if (step != INT_MIN)
2978: reg->step = step;
1.147 kristaps 2979: }
2980:
1.192 schwarze 2981: /*
2982: * Handle some predefined read-only number registers.
2983: * For now, return -1 if the requested register is not predefined;
2984: * in case a predefined read-only register having the value -1
2985: * were to turn up, another special value would have to be chosen.
2986: */
2987: static int
1.273 schwarze 2988: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2989: {
2990:
2991: switch (*name) {
1.273 schwarze 2992: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 2993: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 2994: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2995: return 0;
1.207 schwarze 2996: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2997: return 1;
1.207 schwarze 2998: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2999: return 24;
1.207 schwarze 3000: case 'j': /* Always adjust left margin only. */
1.277 schwarze 3001: return 0;
1.207 schwarze 3002: case 'T': /* Some output device is always defined. */
1.277 schwarze 3003: return 1;
1.207 schwarze 3004: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 3005: return 40;
1.192 schwarze 3006: default:
1.277 schwarze 3007: return -1;
1.192 schwarze 3008: }
3009: }
3010:
1.181 schwarze 3011: int
1.326 schwarze 3012: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 3013: {
1.327 schwarze 3014: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 3015: }
3016:
3017: static int
1.327 schwarze 3018: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 3019: {
3020: struct roffreg *reg;
1.192 schwarze 3021: int val;
3022:
3023: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3024: val = roff_getregro(r, name + 1);
1.192 schwarze 3025: if (-1 != val)
1.277 schwarze 3026: return val;
1.192 schwarze 3027: }
1.181 schwarze 3028:
1.327 schwarze 3029: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 3030: if (len == reg->key.sz &&
1.327 schwarze 3031: 0 == strncmp(name, reg->key.p, len)) {
3032: switch (sign) {
3033: case '+':
3034: reg->val += reg->step;
3035: break;
3036: case '-':
3037: reg->val -= reg->step;
3038: break;
3039: default:
3040: break;
3041: }
1.277 schwarze 3042: return reg->val;
1.327 schwarze 3043: }
3044: }
1.271 schwarze 3045:
1.327 schwarze 3046: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 3047: return 0;
1.271 schwarze 3048: }
3049:
3050: static int
3051: roff_hasregn(const struct roff *r, const char *name, size_t len)
3052: {
3053: struct roffreg *reg;
3054: int val;
3055:
3056: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3057: val = roff_getregro(r, name + 1);
1.271 schwarze 3058: if (-1 != val)
1.277 schwarze 3059: return 1;
1.271 schwarze 3060: }
3061:
3062: for (reg = r->regtab; reg; reg = reg->next)
3063: if (len == reg->key.sz &&
3064: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 3065: return 1;
1.147 kristaps 3066:
1.277 schwarze 3067: return 0;
1.147 kristaps 3068: }
3069:
1.180 schwarze 3070: static void
3071: roff_freereg(struct roffreg *reg)
1.147 kristaps 3072: {
1.180 schwarze 3073: struct roffreg *old_reg;
1.147 kristaps 3074:
1.180 schwarze 3075: while (NULL != reg) {
3076: free(reg->key.p);
3077: old_reg = reg;
3078: reg = reg->next;
3079: free(old_reg);
3080: }
1.147 kristaps 3081: }
1.92 schwarze 3082:
1.340 schwarze 3083: static int
1.89 kristaps 3084: roff_nr(ROFF_ARGS)
1.83 schwarze 3085: {
1.327 schwarze 3086: char *key, *val, *step;
1.212 schwarze 3087: size_t keysz;
1.327 schwarze 3088: int iv, is, len;
1.187 schwarze 3089: char sign;
1.89 kristaps 3090:
1.238 schwarze 3091: key = val = buf->buf + pos;
3092: if (*key == '\0')
1.277 schwarze 3093: return ROFF_IGN;
1.212 schwarze 3094:
3095: keysz = roff_getname(r, &val, ln, pos);
1.363 schwarze 3096: if (key[keysz] == '\\' || key[keysz] == '\t')
1.277 schwarze 3097: return ROFF_IGN;
1.89 kristaps 3098:
1.187 schwarze 3099: sign = *val;
1.238 schwarze 3100: if (sign == '+' || sign == '-')
1.187 schwarze 3101: val++;
3102:
1.327 schwarze 3103: len = 0;
3104: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3105: return ROFF_IGN;
3106:
3107: step = val + len;
3108: while (isspace((unsigned char)*step))
3109: step++;
3110: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3111: is = INT_MIN;
1.109 kristaps 3112:
1.327 schwarze 3113: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 3114: return ROFF_IGN;
1.203 schwarze 3115: }
3116:
1.340 schwarze 3117: static int
1.203 schwarze 3118: roff_rr(ROFF_ARGS)
3119: {
3120: struct roffreg *reg, **prev;
1.212 schwarze 3121: char *name, *cp;
3122: size_t namesz;
1.203 schwarze 3123:
1.238 schwarze 3124: name = cp = buf->buf + pos;
3125: if (*name == '\0')
1.277 schwarze 3126: return ROFF_IGN;
1.212 schwarze 3127: namesz = roff_getname(r, &cp, ln, pos);
3128: name[namesz] = '\0';
1.203 schwarze 3129:
3130: prev = &r->regtab;
3131: while (1) {
3132: reg = *prev;
1.238 schwarze 3133: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 3134: break;
3135: prev = ®->next;
3136: }
1.238 schwarze 3137: if (reg != NULL) {
1.203 schwarze 3138: *prev = reg->next;
3139: free(reg->key.p);
3140: free(reg);
3141: }
1.277 schwarze 3142: return ROFF_IGN;
1.122 schwarze 3143: }
3144:
1.266 schwarze 3145: /* --- handler functions for roff requests -------------------------------- */
3146:
1.340 schwarze 3147: static int
1.122 schwarze 3148: roff_rm(ROFF_ARGS)
3149: {
3150: const char *name;
3151: char *cp;
1.212 schwarze 3152: size_t namesz;
1.122 schwarze 3153:
1.238 schwarze 3154: cp = buf->buf + pos;
3155: while (*cp != '\0') {
1.212 schwarze 3156: name = cp;
1.238 schwarze 3157: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 3158: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 3159: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.363 schwarze 3160: if (name[namesz] == '\\' || name[namesz] == '\t')
1.212 schwarze 3161: break;
1.122 schwarze 3162: }
1.277 schwarze 3163: return ROFF_IGN;
1.178 schwarze 3164: }
3165:
1.340 schwarze 3166: static int
1.178 schwarze 3167: roff_it(ROFF_ARGS)
3168: {
3169: int iv;
3170:
3171: /* Parse the number of lines. */
1.261 schwarze 3172:
3173: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.350 schwarze 3174: mandoc_msg(MANDOCERR_IT_NONUM,
3175: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 3176: return ROFF_IGN;
1.178 schwarze 3177: }
3178:
1.262 schwarze 3179: while (isspace((unsigned char)buf->buf[pos]))
3180: pos++;
3181:
3182: /*
3183: * Arm the input line trap.
3184: * Special-casing "an-trap" is an ugly workaround to cope
3185: * with DocBook stupidly fiddling with man(7) internals.
3186: */
1.261 schwarze 3187:
1.178 schwarze 3188: roffit_lines = iv;
1.262 schwarze 3189: roffit_macro = mandoc_strdup(iv != 1 ||
3190: strcmp(buf->buf + pos, "an-trap") ?
3191: buf->buf + pos : "br");
1.277 schwarze 3192: return ROFF_IGN;
1.175 schwarze 3193: }
3194:
1.340 schwarze 3195: static int
1.175 schwarze 3196: roff_Dd(ROFF_ARGS)
3197: {
1.315 schwarze 3198: int mask;
3199: enum roff_tok t, te;
1.227 schwarze 3200:
1.315 schwarze 3201: switch (tok) {
3202: case ROFF_Dd:
3203: tok = MDOC_Dd;
3204: te = MDOC_MAX;
3205: if (r->format == 0)
3206: r->format = MPARSE_MDOC;
3207: mask = MPARSE_MDOC | MPARSE_QUICK;
3208: break;
3209: case ROFF_TH:
3210: tok = MAN_TH;
3211: te = MAN_MAX;
3212: if (r->format == 0)
3213: r->format = MPARSE_MAN;
3214: mask = MPARSE_QUICK;
3215: break;
3216: default:
3217: abort();
3218: }
3219: if ((r->options & mask) == 0)
3220: for (t = tok; t < te; t++)
3221: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3222: return ROFF_CONT;
1.109 kristaps 3223: }
3224:
1.340 schwarze 3225: static int
1.109 kristaps 3226: roff_TE(ROFF_ARGS)
3227: {
1.361 schwarze 3228: r->man->flags &= ~ROFF_NONOFILL;
1.321 schwarze 3229: if (r->tbl == NULL) {
1.350 schwarze 3230: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3231: return ROFF_IGN;
3232: }
1.346 schwarze 3233: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3234: r->tbl = NULL;
1.258 schwarze 3235: free(buf->buf);
3236: buf->buf = mandoc_strdup(".sp");
3237: buf->sz = 4;
1.329 schwarze 3238: *offs = 0;
1.277 schwarze 3239: return ROFF_REPARSE;
1.258 schwarze 3240: }
1.321 schwarze 3241: r->tbl = NULL;
1.277 schwarze 3242: return ROFF_IGN;
1.112 kristaps 3243: }
3244:
1.340 schwarze 3245: static int
1.112 kristaps 3246: roff_T_(ROFF_ARGS)
3247: {
3248:
3249: if (NULL == r->tbl)
1.350 schwarze 3250: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3251: else
1.296 schwarze 3252: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3253:
1.277 schwarze 3254: return ROFF_IGN;
1.109 kristaps 3255: }
3256:
1.230 schwarze 3257: /*
3258: * Handle in-line equation delimiters.
3259: */
1.340 schwarze 3260: static int
1.238 schwarze 3261: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3262: {
1.233 schwarze 3263: char *cp1, *cp2;
3264: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3265:
1.230 schwarze 3266: /*
3267: * Outside equations, look for an opening delimiter.
3268: * If we are inside an equation, we already know it is
3269: * in-line, or this function wouldn't have been called;
3270: * so look for a closing delimiter.
3271: */
3272:
1.238 schwarze 3273: cp1 = buf->buf + pos;
1.230 schwarze 3274: cp2 = strchr(cp1, r->eqn == NULL ?
3275: r->last_eqn->odelim : r->last_eqn->cdelim);
3276: if (cp2 == NULL)
1.277 schwarze 3277: return ROFF_CONT;
1.230 schwarze 3278:
1.233 schwarze 3279: *cp2++ = '\0';
3280: bef_pr = bef_nl = aft_nl = aft_pr = "";
3281:
3282: /* Handle preceding text, protecting whitespace. */
3283:
1.238 schwarze 3284: if (*buf->buf != '\0') {
1.233 schwarze 3285: if (r->eqn == NULL)
3286: bef_pr = "\\&";
3287: bef_nl = "\n";
3288: }
3289:
3290: /*
3291: * Prepare replacing the delimiter with an equation macro
3292: * and drop leading white space from the equation.
3293: */
1.230 schwarze 3294:
1.233 schwarze 3295: if (r->eqn == NULL) {
3296: while (*cp2 == ' ')
3297: cp2++;
3298: mac = ".EQ";
3299: } else
3300: mac = ".EN";
3301:
3302: /* Handle following text, protecting whitespace. */
3303:
3304: if (*cp2 != '\0') {
3305: aft_nl = "\n";
3306: if (r->eqn != NULL)
3307: aft_pr = "\\&";
3308: }
3309:
3310: /* Do the actual replacement. */
3311:
1.238 schwarze 3312: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3313: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3314: free(buf->buf);
3315: buf->buf = cp1;
1.230 schwarze 3316:
3317: /* Toggle the in-line state of the eqn subsystem. */
3318:
3319: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3320: return ROFF_REPARSE;
1.151 kristaps 3321: }
3322:
1.340 schwarze 3323: static int
1.235 schwarze 3324: roff_EQ(ROFF_ARGS)
1.125 kristaps 3325: {
1.319 schwarze 3326: struct roff_node *n;
3327:
1.356 schwarze 3328: if (r->man->meta.macroset == MACROSET_MAN)
1.322 schwarze 3329: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3330: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3331: if (ln > r->man->last->line)
3332: n->flags |= NODE_LINE;
1.348 schwarze 3333: n->eqn = eqn_box_new();
1.319 schwarze 3334: roff_node_append(r->man, n);
3335: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3336:
1.238 schwarze 3337: assert(r->eqn == NULL);
1.319 schwarze 3338: if (r->last_eqn == NULL)
1.351 schwarze 3339: r->last_eqn = eqn_alloc();
1.319 schwarze 3340: else
3341: eqn_reset(r->last_eqn);
3342: r->eqn = r->last_eqn;
3343: r->eqn->node = n;
1.151 kristaps 3344:
1.238 schwarze 3345: if (buf->buf[pos] != '\0')
1.350 schwarze 3346: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3347: ".EQ %s", buf->buf + pos);
1.151 kristaps 3348:
1.277 schwarze 3349: return ROFF_IGN;
1.125 kristaps 3350: }
3351:
1.340 schwarze 3352: static int
1.125 kristaps 3353: roff_EN(ROFF_ARGS)
3354: {
1.319 schwarze 3355: if (r->eqn != NULL) {
3356: eqn_parse(r->eqn);
3357: r->eqn = NULL;
3358: } else
1.350 schwarze 3359: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3360: if (buf->buf[pos] != '\0')
1.350 schwarze 3361: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3362: "EN %s", buf->buf + pos);
1.277 schwarze 3363: return ROFF_IGN;
1.125 kristaps 3364: }
3365:
1.340 schwarze 3366: static int
1.109 kristaps 3367: roff_TS(ROFF_ARGS)
3368: {
1.321 schwarze 3369: if (r->tbl != NULL) {
1.350 schwarze 3370: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3371: tbl_end(r->tbl, 0);
1.115 kristaps 3372: }
1.361 schwarze 3373: r->man->flags |= ROFF_NONOFILL;
1.351 schwarze 3374: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.346 schwarze 3375: if (r->last_tbl == NULL)
1.321 schwarze 3376: r->first_tbl = r->tbl;
3377: r->last_tbl = r->tbl;
1.297 schwarze 3378: return ROFF_IGN;
3379: }
3380:
1.340 schwarze 3381: static int
1.358 schwarze 3382: roff_noarg(ROFF_ARGS)
3383: {
3384: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3385: man_breakscope(r->man, tok);
3386: if (tok == ROFF_brp)
3387: tok = ROFF_br;
3388: roff_elem_alloc(r->man, ln, ppos, tok);
3389: if (buf->buf[pos] != '\0')
3390: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3391: "%s %s", roff_name[tok], buf->buf + pos);
3392: if (tok == ROFF_nf)
3393: r->man->flags |= ROFF_NOFILL;
3394: else if (tok == ROFF_fi)
3395: r->man->flags &= ~ROFF_NOFILL;
3396: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3397: r->man->next = ROFF_NEXT_SIBLING;
3398: return ROFF_IGN;
3399: }
3400:
3401: static int
1.297 schwarze 3402: roff_onearg(ROFF_ARGS)
3403: {
3404: struct roff_node *n;
3405: char *cp;
1.305 schwarze 3406: int npos;
1.297 schwarze 3407:
1.302 schwarze 3408: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3409: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3410: tok == ROFF_ti))
1.302 schwarze 3411: man_breakscope(r->man, tok);
3412:
1.309 schwarze 3413: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3414: r->man->last = roffce_node;
3415: r->man->next = ROFF_NEXT_SIBLING;
3416: }
3417:
1.297 schwarze 3418: roff_elem_alloc(r->man, ln, ppos, tok);
3419: n = r->man->last;
3420:
3421: cp = buf->buf + pos;
3422: if (*cp != '\0') {
3423: while (*cp != '\0' && *cp != ' ')
3424: cp++;
3425: while (*cp == ' ')
3426: *cp++ = '\0';
3427: if (*cp != '\0')
1.350 schwarze 3428: mandoc_msg(MANDOCERR_ARG_EXCESS,
3429: ln, (int)(cp - buf->buf),
1.297 schwarze 3430: "%s ... %s", roff_name[tok], cp);
3431: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3432: }
3433:
1.309 schwarze 3434: if (tok == ROFF_ce || tok == ROFF_rj) {
3435: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3436: roff_word_alloc(r->man, ln, pos, "1");
3437: r->man->last->flags |= NODE_NOSRC;
3438: }
3439: npos = 0;
3440: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3441: &roffce_lines, 0) == 0) {
1.350 schwarze 3442: mandoc_msg(MANDOCERR_CE_NONUM,
3443: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3444: roffce_lines = 1;
3445: }
3446: if (roffce_lines < 1) {
3447: r->man->last = r->man->last->parent;
3448: roffce_node = NULL;
3449: roffce_lines = 0;
3450: } else
3451: roffce_node = r->man->last->parent;
3452: } else {
3453: n->flags |= NODE_VALID | NODE_ENDED;
3454: r->man->last = n;
3455: }
3456: n->flags |= NODE_LINE;
1.300 schwarze 3457: r->man->next = ROFF_NEXT_SIBLING;
3458: return ROFF_IGN;
3459: }
3460:
1.340 schwarze 3461: static int
1.300 schwarze 3462: roff_manyarg(ROFF_ARGS)
3463: {
3464: struct roff_node *n;
3465: char *sp, *ep;
3466:
3467: roff_elem_alloc(r->man, ln, ppos, tok);
3468: n = r->man->last;
3469:
3470: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3471: while (*ep != '\0' && *ep != ' ')
3472: ep++;
3473: while (*ep == ' ')
3474: *ep++ = '\0';
3475: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3476: }
3477:
3478: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3479: r->man->last = n;
3480: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3481: return ROFF_IGN;
1.251 schwarze 3482: }
3483:
1.340 schwarze 3484: static int
1.311 schwarze 3485: roff_als(ROFF_ARGS)
3486: {
3487: char *oldn, *newn, *end, *value;
3488: size_t oldsz, newsz, valsz;
3489:
3490: newn = oldn = buf->buf + pos;
3491: if (*newn == '\0')
3492: return ROFF_IGN;
3493:
3494: newsz = roff_getname(r, &oldn, ln, pos);
1.363 schwarze 3495: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.311 schwarze 3496: return ROFF_IGN;
3497:
3498: end = oldn;
3499: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3500: if (oldsz == 0)
3501: return ROFF_IGN;
3502:
1.338 schwarze 3503: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3504: (int)oldsz, oldn);
1.311 schwarze 3505: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3506: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3507: free(value);
1.364 schwarze 3508: return ROFF_IGN;
3509: }
3510:
3511: /*
3512: * The .break request only makes sense inside conditionals,
3513: * and that case is already handled in roff_cond_sub().
3514: */
3515: static int
3516: roff_break(ROFF_ARGS)
3517: {
3518: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.296 schwarze 3519: return ROFF_IGN;
1.92 schwarze 3520: }
3521:
1.340 schwarze 3522: static int
1.174 kristaps 3523: roff_cc(ROFF_ARGS)
3524: {
3525: const char *p;
3526:
1.238 schwarze 3527: p = buf->buf + pos;
1.174 kristaps 3528:
1.238 schwarze 3529: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3530: r->control = '\0';
1.174 kristaps 3531:
1.238 schwarze 3532: if (*p != '\0')
1.350 schwarze 3533: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3534: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3535:
1.341 schwarze 3536: return ROFF_IGN;
3537: }
3538:
3539: static int
3540: roff_char(ROFF_ARGS)
3541: {
3542: const char *p, *kp, *vp;
3543: size_t ksz, vsz;
3544: int font;
3545:
3546: /* Parse the character to be replaced. */
3547:
3548: kp = buf->buf + pos;
3549: p = kp + 1;
3550: if (*kp == '\0' || (*kp == '\\' &&
3551: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3552: (*p != ' ' && *p != '\0')) {
1.350 schwarze 3553: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3554: return ROFF_IGN;
3555: }
3556: ksz = p - kp;
3557: while (*p == ' ')
3558: p++;
3559:
3560: /*
3561: * If the replacement string contains a font escape sequence,
3562: * we have to restore the font at the end.
3563: */
3564:
3565: vp = p;
3566: vsz = strlen(p);
3567: font = 0;
3568: while (*p != '\0') {
3569: if (*p++ != '\\')
3570: continue;
3571: switch (mandoc_escape(&p, NULL, NULL)) {
3572: case ESCAPE_FONT:
3573: case ESCAPE_FONTROMAN:
3574: case ESCAPE_FONTITALIC:
3575: case ESCAPE_FONTBOLD:
3576: case ESCAPE_FONTBI:
1.342 schwarze 3577: case ESCAPE_FONTCW:
1.341 schwarze 3578: case ESCAPE_FONTPREV:
3579: font++;
3580: break;
3581: default:
3582: break;
3583: }
3584: }
3585: if (font > 1)
1.350 schwarze 3586: mandoc_msg(MANDOCERR_CHAR_FONT,
3587: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3588:
3589: /*
3590: * Approximate the effect of .char using the .tr tables.
3591: * XXX In groff, .char and .tr interact differently.
3592: */
3593:
3594: if (ksz == 1) {
3595: if (r->xtab == NULL)
3596: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3597: assert((unsigned int)*kp < 128);
3598: free(r->xtab[(int)*kp].p);
3599: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3600: "%s%s", vp, font ? "\fP" : "");
3601: } else {
3602: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3603: if (font)
3604: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3605: }
1.277 schwarze 3606: return ROFF_IGN;
1.174 kristaps 3607: }
3608:
1.340 schwarze 3609: static int
1.303 schwarze 3610: roff_ec(ROFF_ARGS)
3611: {
3612: const char *p;
3613:
3614: p = buf->buf + pos;
3615: if (*p == '\0')
3616: r->escape = '\\';
3617: else {
3618: r->escape = *p;
3619: if (*++p != '\0')
1.350 schwarze 3620: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3621: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3622: }
3623: return ROFF_IGN;
3624: }
3625:
1.340 schwarze 3626: static int
1.303 schwarze 3627: roff_eo(ROFF_ARGS)
3628: {
3629: r->escape = '\0';
3630: if (buf->buf[pos] != '\0')
1.350 schwarze 3631: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3632: ln, pos, "eo %s", buf->buf + pos);
3633: return ROFF_IGN;
1.330 schwarze 3634: }
3635:
1.340 schwarze 3636: static int
1.330 schwarze 3637: roff_nop(ROFF_ARGS)
3638: {
3639: while (buf->buf[pos] == ' ')
3640: pos++;
3641: *offs = pos;
3642: return ROFF_RERUN;
1.303 schwarze 3643: }
3644:
1.340 schwarze 3645: static int
1.164 kristaps 3646: roff_tr(ROFF_ARGS)
3647: {
3648: const char *p, *first, *second;
3649: size_t fsz, ssz;
3650: enum mandoc_esc esc;
3651:
1.238 schwarze 3652: p = buf->buf + pos;
1.164 kristaps 3653:
1.238 schwarze 3654: if (*p == '\0') {
1.350 schwarze 3655: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3656: return ROFF_IGN;
1.164 kristaps 3657: }
3658:
1.238 schwarze 3659: while (*p != '\0') {
1.164 kristaps 3660: fsz = ssz = 1;
3661:
3662: first = p++;
1.238 schwarze 3663: if (*first == '\\') {
1.164 kristaps 3664: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3665: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3666: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3667: (int)(p - buf->buf), "%s", first);
1.277 schwarze 3668: return ROFF_IGN;
1.164 kristaps 3669: }
3670: fsz = (size_t)(p - first);
3671: }
3672:
3673: second = p++;
1.238 schwarze 3674: if (*second == '\\') {
1.164 kristaps 3675: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3676: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3677: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3678: (int)(p - buf->buf), "%s", second);
1.277 schwarze 3679: return ROFF_IGN;
1.164 kristaps 3680: }
3681: ssz = (size_t)(p - second);
1.238 schwarze 3682: } else if (*second == '\0') {
1.350 schwarze 3683: mandoc_msg(MANDOCERR_TR_ODD, ln,
3684: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3685: second = " ";
1.165 kristaps 3686: p--;
1.164 kristaps 3687: }
3688:
1.167 kristaps 3689: if (fsz > 1) {
1.207 schwarze 3690: roff_setstrn(&r->xmbtab, first, fsz,
3691: second, ssz, 0);
1.167 kristaps 3692: continue;
3693: }
3694:
1.238 schwarze 3695: if (r->xtab == NULL)
1.207 schwarze 3696: r->xtab = mandoc_calloc(128,
3697: sizeof(struct roffstr));
1.167 kristaps 3698:
3699: free(r->xtab[(int)*first].p);
3700: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3701: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3702: }
3703:
1.277 schwarze 3704: return ROFF_IGN;
1.164 kristaps 3705: }
3706:
1.339 schwarze 3707: /*
3708: * Implementation of the .return request.
3709: * There is no need to call roff_userret() from here.
3710: * The read module will call that after rewinding the reader stack
3711: * to the place from where the current macro was called.
3712: */
1.340 schwarze 3713: static int
1.339 schwarze 3714: roff_return(ROFF_ARGS)
3715: {
3716: if (r->mstackpos >= 0)
1.340 schwarze 3717: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3718:
1.350 schwarze 3719: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3720: return ROFF_IGN;
3721: }
3722:
1.340 schwarze 3723: static int
1.306 schwarze 3724: roff_rn(ROFF_ARGS)
3725: {
3726: const char *value;
3727: char *oldn, *newn, *end;
3728: size_t oldsz, newsz;
1.315 schwarze 3729: int deftype;
1.306 schwarze 3730:
3731: oldn = newn = buf->buf + pos;
3732: if (*oldn == '\0')
3733: return ROFF_IGN;
3734:
3735: oldsz = roff_getname(r, &newn, ln, pos);
1.363 schwarze 3736: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.306 schwarze 3737: return ROFF_IGN;
3738:
3739: end = newn;
3740: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3741: if (newsz == 0)
3742: return ROFF_IGN;
3743:
1.315 schwarze 3744: deftype = ROFFDEF_ANY;
3745: value = roff_getstrn(r, oldn, oldsz, &deftype);
3746: switch (deftype) {
3747: case ROFFDEF_USER:
1.306 schwarze 3748: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3749: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3750: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3751: break;
3752: case ROFFDEF_PRE:
3753: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3754: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3755: break;
3756: case ROFFDEF_REN:
1.306 schwarze 3757: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3758: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3759: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3760: break;
3761: case ROFFDEF_STD:
1.306 schwarze 3762: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3763: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3764: break;
3765: default:
3766: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3767: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3768: break;
3769: }
1.306 schwarze 3770: return ROFF_IGN;
3771: }
3772:
1.340 schwarze 3773: static int
1.339 schwarze 3774: roff_shift(ROFF_ARGS)
3775: {
3776: struct mctx *ctx;
3777: int levels, i;
3778:
3779: levels = 1;
3780: if (buf->buf[pos] != '\0' &&
3781: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 schwarze 3782: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3783: ln, pos, "shift %s", buf->buf + pos);
3784: levels = 1;
3785: }
3786: if (r->mstackpos < 0) {
1.350 schwarze 3787: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3788: return ROFF_IGN;
3789: }
3790: ctx = r->mstack + r->mstackpos;
3791: if (levels > ctx->argc) {
1.350 schwarze 3792: mandoc_msg(MANDOCERR_SHIFT,
1.339 schwarze 3793: ln, pos, "%d, but max is %d", levels, ctx->argc);
3794: levels = ctx->argc;
3795: }
3796: if (levels == 0)
3797: return ROFF_IGN;
3798: for (i = 0; i < levels; i++)
3799: free(ctx->argv[i]);
3800: ctx->argc -= levels;
3801: for (i = 0; i < ctx->argc; i++)
3802: ctx->argv[i] = ctx->argv[i + levels];
3803: return ROFF_IGN;
3804: }
3805:
1.340 schwarze 3806: static int
1.105 kristaps 3807: roff_so(ROFF_ARGS)
3808: {
1.249 schwarze 3809: char *name, *cp;
1.105 kristaps 3810:
1.238 schwarze 3811: name = buf->buf + pos;
1.350 schwarze 3812: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3813:
3814: /*
3815: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3816: * opening anything that's not in our cwd or anything beneath
3817: * it. Thus, explicitly disallow traversing up the file-system
3818: * or using absolute paths.
3819: */
3820:
1.238 schwarze 3821: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 schwarze 3822: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3823: buf->sz = mandoc_asprintf(&cp,
3824: ".sp\nSee the file %s.\n.sp", name) + 1;
3825: free(buf->buf);
3826: buf->buf = cp;
3827: *offs = 0;
1.277 schwarze 3828: return ROFF_REPARSE;
1.105 kristaps 3829: }
3830:
3831: *offs = pos;
1.277 schwarze 3832: return ROFF_SO;
1.105 kristaps 3833: }
1.92 schwarze 3834:
1.266 schwarze 3835: /* --- user defined strings and macros ------------------------------------ */
3836:
1.340 schwarze 3837: static int
1.106 kristaps 3838: roff_userdef(ROFF_ARGS)
1.99 kristaps 3839: {
1.339 schwarze 3840: struct mctx *ctx;
3841: char *arg, *ap, *dst, *src;
3842: size_t sz;
3843:
1.365 ! schwarze 3844: /* If the macro is empty, ignore it altogether. */
! 3845:
! 3846: if (*r->current_string == '\0')
! 3847: return ROFF_IGN;
! 3848:
1.339 schwarze 3849: /* Initialize a new macro stack context. */
3850:
3851: if (++r->mstackpos == r->mstacksz) {
3852: r->mstack = mandoc_recallocarray(r->mstack,
3853: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3854: r->mstacksz += 8;
3855: }
3856: ctx = r->mstack + r->mstackpos;
3857: ctx->argsz = 0;
3858: ctx->argc = 0;
3859: ctx->argv = NULL;
3860:
3861: /*
3862: * Collect pointers to macro argument strings,
3863: * NUL-terminating them and escaping quotes.
3864: */
3865:
3866: src = buf->buf + pos;
3867: while (*src != '\0') {
3868: if (ctx->argc == ctx->argsz) {
3869: ctx->argsz += 8;
3870: ctx->argv = mandoc_reallocarray(ctx->argv,
3871: ctx->argsz, sizeof(*ctx->argv));
3872: }
1.355 schwarze 3873: arg = roff_getarg(r, &src, ln, &pos);
1.339 schwarze 3874: sz = 1; /* For the terminating NUL. */
3875: for (ap = arg; *ap != '\0'; ap++)
3876: sz += *ap == '"' ? 4 : 1;
3877: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3878: for (ap = arg; *ap != '\0'; ap++) {
3879: if (*ap == '"') {
3880: memcpy(dst, "\\(dq", 4);
3881: dst += 4;
3882: } else
3883: *dst++ = *ap;
1.106 kristaps 3884: }
1.339 schwarze 3885: *dst = '\0';
1.355 schwarze 3886: free(arg);
1.337 schwarze 3887: }
3888:
1.339 schwarze 3889: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3890:
1.238 schwarze 3891: free(buf->buf);
1.339 schwarze 3892: buf->buf = mandoc_strdup(r->current_string);
3893: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3894: *offs = 0;
1.106 kristaps 3895:
1.365 ! schwarze 3896: return buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3897: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3898: }
1.121 schwarze 3899:
1.306 schwarze 3900: /*
3901: * Calling a high-level macro that was renamed with .rn.
3902: * r->current_string has already been set up by roff_parse().
3903: */
1.340 schwarze 3904: static int
1.306 schwarze 3905: roff_renamed(ROFF_ARGS)
3906: {
3907: char *nbuf;
3908:
1.315 schwarze 3909: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3910: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3911: free(buf->buf);
3912: buf->buf = nbuf;
1.329 schwarze 3913: *offs = 0;
1.306 schwarze 3914: return ROFF_CONT;
3915: }
3916:
1.362 schwarze 3917: /*
3918: * Measure the length in bytes of the roff identifier at *cpp
3919: * and advance the pointer to the next word.
3920: */
1.212 schwarze 3921: static size_t
1.121 schwarze 3922: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3923: {
3924: char *name, *cp;
1.212 schwarze 3925: size_t namesz;
1.121 schwarze 3926:
3927: name = *cpp;
1.362 schwarze 3928: if (*name == '\0')
1.277 schwarze 3929: return 0;
1.121 schwarze 3930:
1.362 schwarze 3931: /* Advance cp to the byte after the end of the name. */
3932:
1.212 schwarze 3933: for (cp = name; 1; cp++) {
1.362 schwarze 3934: namesz = cp - name;
1.363 schwarze 3935: if (*cp == '\0')
1.212 schwarze 3936: break;
1.363 schwarze 3937: if (*cp == ' ' || *cp == '\t') {
3938: cp++;
3939: break;
3940: }
1.362 schwarze 3941: if (*cp != '\\')
1.121 schwarze 3942: continue;
1.362 schwarze 3943: if (cp[1] == '{' || cp[1] == '}')
1.215 schwarze 3944: break;
1.362 schwarze 3945: if (*++cp == '\\')
1.121 schwarze 3946: continue;
1.350 schwarze 3947: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.224 schwarze 3948: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3949: mandoc_escape((const char **)&cp, NULL, NULL);
3950: break;
1.121 schwarze 3951: }
3952:
3953: /* Read past spaces. */
1.362 schwarze 3954:
3955: while (*cp == ' ')
1.121 schwarze 3956: cp++;
3957:
3958: *cpp = cp;
1.277 schwarze 3959: return namesz;
1.121 schwarze 3960: }
3961:
1.106 kristaps 3962: /*
3963: * Store *string into the user-defined string called *name.
3964: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3965: * append == 0: replace mode
3966: * append == 1: single-line append mode
3967: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3968: */
1.94 kristaps 3969: static void
1.106 kristaps 3970: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3971: int append)
1.92 schwarze 3972: {
1.315 schwarze 3973: size_t namesz;
1.164 kristaps 3974:
1.315 schwarze 3975: namesz = strlen(name);
3976: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 3977: string ? strlen(string) : 0, append);
1.315 schwarze 3978: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 3979: }
3980:
3981: static void
1.166 kristaps 3982: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3983: const char *string, size_t stringsz, int append)
1.164 kristaps 3984: {
1.166 kristaps 3985: struct roffkv *n;
1.164 kristaps 3986: char *c;
3987: int i;
3988: size_t oldch, newch;
1.92 schwarze 3989:
1.106 kristaps 3990: /* Search for an existing string with the same name. */
1.164 kristaps 3991: n = *r;
3992:
1.211 schwarze 3993: while (n && (namesz != n->key.sz ||
3994: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3995: n = n->next;
1.94 kristaps 3996:
3997: if (NULL == n) {
1.106 kristaps 3998: /* Create a new string table entry. */
1.166 kristaps 3999: n = mandoc_malloc(sizeof(struct roffkv));
4000: n->key.p = mandoc_strndup(name, namesz);
4001: n->key.sz = namesz;
4002: n->val.p = NULL;
4003: n->val.sz = 0;
1.164 kristaps 4004: n->next = *r;
4005: *r = n;
1.193 schwarze 4006: } else if (0 == append) {
1.166 kristaps 4007: free(n->val.p);
4008: n->val.p = NULL;
4009: n->val.sz = 0;
1.106 kristaps 4010: }
4011:
4012: if (NULL == string)
4013: return;
4014:
4015: /*
4016: * One additional byte for the '\n' in multiline mode,
4017: * and one for the terminating '\0'.
4018: */
1.193 schwarze 4019: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 4020:
1.166 kristaps 4021: if (NULL == n->val.p) {
4022: n->val.p = mandoc_malloc(newch);
4023: *n->val.p = '\0';
1.106 kristaps 4024: oldch = 0;
4025: } else {
1.166 kristaps 4026: oldch = n->val.sz;
4027: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 4028: }
4029:
4030: /* Skip existing content in the destination buffer. */
1.166 kristaps 4031: c = n->val.p + (int)oldch;
1.106 kristaps 4032:
4033: /* Append new content to the destination buffer. */
1.164 kristaps 4034: i = 0;
4035: while (i < (int)stringsz) {
1.106 kristaps 4036: /*
4037: * Rudimentary roff copy mode:
4038: * Handle escaped backslashes.
4039: */
1.164 kristaps 4040: if ('\\' == string[i] && '\\' == string[i + 1])
4041: i++;
4042: *c++ = string[i++];
1.106 kristaps 4043: }
1.94 kristaps 4044:
1.106 kristaps 4045: /* Append terminating bytes. */
1.193 schwarze 4046: if (1 < append)
1.106 kristaps 4047: *c++ = '\n';
1.163 kristaps 4048:
1.106 kristaps 4049: *c = '\0';
1.166 kristaps 4050: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 4051: }
4052:
1.94 kristaps 4053: static const char *
1.325 schwarze 4054: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 4055: int *deftype)
1.92 schwarze 4056: {
1.315 schwarze 4057: const struct roffkv *n;
1.325 schwarze 4058: int found, i;
1.315 schwarze 4059: enum roff_tok tok;
4060:
1.325 schwarze 4061: found = 0;
4062: for (n = r->strtab; n != NULL; n = n->next) {
4063: if (strncmp(name, n->key.p, len) != 0 ||
4064: n->key.p[len] != '\0' || n->val.p == NULL)
4065: continue;
4066: if (*deftype & ROFFDEF_USER) {
4067: *deftype = ROFFDEF_USER;
4068: return n->val.p;
4069: } else {
4070: found = 1;
4071: break;
4072: }
4073: }
4074: for (n = r->rentab; n != NULL; n = n->next) {
4075: if (strncmp(name, n->key.p, len) != 0 ||
4076: n->key.p[len] != '\0' || n->val.p == NULL)
4077: continue;
4078: if (*deftype & ROFFDEF_REN) {
4079: *deftype = ROFFDEF_REN;
4080: return n->val.p;
4081: } else {
4082: found = 1;
4083: break;
1.315 schwarze 4084: }
4085: }
1.325 schwarze 4086: for (i = 0; i < PREDEFS_MAX; i++) {
4087: if (strncmp(name, predefs[i].name, len) != 0 ||
4088: predefs[i].name[len] != '\0')
4089: continue;
4090: if (*deftype & ROFFDEF_PRE) {
4091: *deftype = ROFFDEF_PRE;
4092: return predefs[i].str;
4093: } else {
4094: found = 1;
4095: break;
1.315 schwarze 4096: }
4097: }
1.356 schwarze 4098: if (r->man->meta.macroset != MACROSET_MAN) {
1.325 schwarze 4099: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4100: if (strncmp(name, roff_name[tok], len) != 0 ||
4101: roff_name[tok][len] != '\0')
4102: continue;
4103: if (*deftype & ROFFDEF_STD) {
4104: *deftype = ROFFDEF_STD;
4105: return NULL;
4106: } else {
4107: found = 1;
4108: break;
1.315 schwarze 4109: }
4110: }
4111: }
1.356 schwarze 4112: if (r->man->meta.macroset != MACROSET_MDOC) {
1.325 schwarze 4113: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4114: if (strncmp(name, roff_name[tok], len) != 0 ||
4115: roff_name[tok][len] != '\0')
4116: continue;
4117: if (*deftype & ROFFDEF_STD) {
4118: *deftype = ROFFDEF_STD;
4119: return NULL;
4120: } else {
4121: found = 1;
4122: break;
1.315 schwarze 4123: }
4124: }
1.325 schwarze 4125: }
4126:
4127: if (found == 0 && *deftype != ROFFDEF_ANY) {
4128: if (*deftype & ROFFDEF_REN) {
4129: /*
4130: * This might still be a request,
4131: * so do not treat it as undefined yet.
4132: */
4133: *deftype = ROFFDEF_UNDEF;
4134: return NULL;
1.315 schwarze 4135: }
1.325 schwarze 4136:
4137: /* Using an undefined string defines it to be empty. */
4138:
4139: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4140: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 4141: }
1.325 schwarze 4142:
1.315 schwarze 4143: *deftype = 0;
1.277 schwarze 4144: return NULL;
1.92 schwarze 4145: }
4146:
1.94 kristaps 4147: static void
1.167 kristaps 4148: roff_freestr(struct roffkv *r)
1.92 schwarze 4149: {
1.166 kristaps 4150: struct roffkv *n, *nn;
1.92 schwarze 4151:
1.167 kristaps 4152: for (n = r; n; n = nn) {
1.166 kristaps 4153: free(n->key.p);
4154: free(n->val.p);
1.92 schwarze 4155: nn = n->next;
4156: free(n);
4157: }
1.114 kristaps 4158: }
1.266 schwarze 4159:
4160: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 4161:
4162: /*
4163: * Duplicate an input string, making the appropriate character
4164: * conversations (as stipulated by `tr') along the way.
4165: * Returns a heap-allocated string with all the replacements made.
4166: */
4167: char *
4168: roff_strdup(const struct roff *r, const char *p)
4169: {
1.166 kristaps 4170: const struct roffkv *cp;
1.164 kristaps 4171: char *res;
4172: const char *pp;
4173: size_t ssz, sz;
4174: enum mandoc_esc esc;
4175:
1.167 kristaps 4176: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 4177: return mandoc_strdup(p);
1.164 kristaps 4178: else if ('\0' == *p)
1.277 schwarze 4179: return mandoc_strdup("");
1.164 kristaps 4180:
4181: /*
4182: * Step through each character looking for term matches
4183: * (remember that a `tr' can be invoked with an escape, which is
4184: * a glyph but the escape is multi-character).
4185: * We only do this if the character hash has been initialised
4186: * and the string is >0 length.
4187: */
4188:
4189: res = NULL;
4190: ssz = 0;
4191:
4192: while ('\0' != *p) {
1.289 schwarze 4193: assert((unsigned int)*p < 128);
4194: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 4195: sz = r->xtab[(int)*p].sz;
4196: res = mandoc_realloc(res, ssz + sz + 1);
4197: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4198: ssz += sz;
4199: p++;
4200: continue;
4201: } else if ('\\' != *p) {
4202: res = mandoc_realloc(res, ssz + 2);
4203: res[ssz++] = *p++;
4204: continue;
4205: }
4206:
1.164 kristaps 4207: /* Search for term matches. */
1.167 kristaps 4208: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4209: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4210: break;
4211:
4212: if (NULL != cp) {
4213: /*
4214: * A match has been found.
4215: * Append the match to the array and move
4216: * forward by its keysize.
4217: */
1.207 schwarze 4218: res = mandoc_realloc(res,
4219: ssz + cp->val.sz + 1);
1.166 kristaps 4220: memcpy(res + ssz, cp->val.p, cp->val.sz);
4221: ssz += cp->val.sz;
4222: p += (int)cp->key.sz;
1.164 kristaps 4223: continue;
4224: }
4225:
1.167 kristaps 4226: /*
4227: * Handle escapes carefully: we need to copy
4228: * over just the escape itself, or else we might
4229: * do replacements within the escape itself.
4230: * Make sure to pass along the bogus string.
4231: */
4232: pp = p++;
4233: esc = mandoc_escape(&p, NULL, NULL);
4234: if (ESCAPE_ERROR == esc) {
4235: sz = strlen(pp);
1.164 kristaps 4236: res = mandoc_realloc(res, ssz + sz + 1);
4237: memcpy(res + ssz, pp, sz);
1.167 kristaps 4238: break;
1.164 kristaps 4239: }
1.207 schwarze 4240: /*
4241: * We bail out on bad escapes.
1.167 kristaps 4242: * No need to warn: we already did so when
1.355 schwarze 4243: * roff_expand() was called.
1.167 kristaps 4244: */
4245: sz = (int)(p - pp);
4246: res = mandoc_realloc(res, ssz + sz + 1);
4247: memcpy(res + ssz, pp, sz);
4248: ssz += sz;
1.164 kristaps 4249: }
4250:
4251: res[(int)ssz] = '\0';
1.277 schwarze 4252: return res;
1.227 schwarze 4253: }
4254:
4255: int
4256: roff_getformat(const struct roff *r)
4257: {
4258:
1.277 schwarze 4259: return r->format;
1.174 kristaps 4260: }
4261:
4262: /*
1.207 schwarze 4263: * Find out whether a line is a macro line or not.
1.174 kristaps 4264: * If it is, adjust the current position and return one; if it isn't,
4265: * return zero and don't change the current position.
4266: * If the control character has been set with `.cc', then let that grain
4267: * precedence.
4268: * This is slighly contrary to groff, where using the non-breaking
4269: * control character when `cc' has been invoked will cause the
4270: * non-breaking macro contents to be printed verbatim.
4271: */
4272: int
4273: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4274: {
4275: int pos;
4276:
4277: pos = *ppos;
4278:
1.303 schwarze 4279: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4280: pos++;
1.303 schwarze 4281: else if (r->control != '\0')
1.277 schwarze 4282: return 0;
1.174 kristaps 4283: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4284: pos += 2;
4285: else if ('.' == cp[pos] || '\'' == cp[pos])
4286: pos++;
4287: else
1.277 schwarze 4288: return 0;
1.174 kristaps 4289:
4290: while (' ' == cp[pos] || '\t' == cp[pos])
4291: pos++;
4292:
4293: *ppos = pos;
1.277 schwarze 4294: return 1;
1.74 kristaps 4295: }
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