Annotation of mandoc/roff.c, Revision 1.319
1.319 ! schwarze 1: /* $Id: roff.c,v 1.318 2017/07/04 22:52:00 schwarze Exp $ */
1.1 kristaps 2: /*
1.267 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.287 schwarze 4: * Copyright (c) 2010-2015, 2017 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:
1.67 kristaps 31: #include "mandoc.h"
1.201 schwarze 32: #include "mandoc_aux.h"
1.295 schwarze 33: #include "mandoc_ohash.h"
1.265 schwarze 34: #include "roff.h"
1.226 schwarze 35: #include "libmandoc.h"
1.266 schwarze 36: #include "roff_int.h"
1.109 kristaps 37: #include "libroff.h"
1.82 kristaps 38:
1.170 schwarze 39: /* Maximum number of string expansions per line, to break infinite loops. */
40: #define EXPAND_LIMIT 1000
41:
1.315 schwarze 42: /* Types of definitions of macros and strings. */
43: #define ROFFDEF_USER (1 << 1) /* User-defined. */
44: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
45: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
46: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
47: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
48: ROFFDEF_REN | ROFFDEF_STD)
49:
1.266 schwarze 50: /* --- data types --------------------------------------------------------- */
51:
1.147 kristaps 52: /*
1.167 kristaps 53: * An incredibly-simple string buffer.
54: */
1.94 kristaps 55: struct roffstr {
1.167 kristaps 56: char *p; /* nil-terminated buffer */
57: size_t sz; /* saved strlen(p) */
1.166 kristaps 58: };
59:
60: /*
1.167 kristaps 61: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 62: */
63: struct roffkv {
64: struct roffstr key;
65: struct roffstr val;
66: struct roffkv *next; /* next in list */
1.94 kristaps 67: };
68:
1.180 schwarze 69: /*
70: * A single number register as part of a singly-linked list.
71: */
72: struct roffreg {
73: struct roffstr key;
1.181 schwarze 74: int val;
1.180 schwarze 75: struct roffreg *next;
76: };
77:
1.295 schwarze 78: /*
79: * Association of request and macro names with token IDs.
80: */
81: struct roffreq {
82: enum roff_tok tok;
83: char name[];
84: };
85:
1.67 kristaps 86: struct roff {
1.128 kristaps 87: struct mparse *parse; /* parse point */
1.296 schwarze 88: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 89: struct roffnode *last; /* leaf of stack */
1.223 schwarze 90: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 91: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 92: struct roffreg *regtab; /* number registers */
1.166 kristaps 93: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 94: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 95: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
96: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 97: const char *current_string; /* value of last called user macro */
1.118 kristaps 98: struct tbl_node *first_tbl; /* first table parsed */
99: struct tbl_node *last_tbl; /* last table parsed */
100: struct tbl_node *tbl; /* current table being parsed */
1.319 ! schwarze 101: struct eqn_node *last_eqn; /* equation parser */
! 102: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 103: int eqn_inline; /* current equation is inline */
1.223 schwarze 104: int options; /* parse options */
105: int rstacksz; /* current size limit of rstack */
106: int rstackpos; /* position in rstack */
1.227 schwarze 107: int format; /* current file in mdoc or man format */
1.273 schwarze 108: int argc; /* number of args of the last macro */
1.223 schwarze 109: char control; /* control character */
1.303 schwarze 110: char escape; /* escape character */
1.79 kristaps 111: };
112:
1.67 kristaps 113: struct roffnode {
1.294 schwarze 114: enum roff_tok tok; /* type of node */
1.67 kristaps 115: struct roffnode *parent; /* up one in stack */
116: int line; /* parse line */
117: int col; /* parse col */
1.106 kristaps 118: char *name; /* node name, e.g. macro name */
1.79 kristaps 119: char *end; /* end-rules: custom token */
120: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 121: int rule; /* current evaluation rule */
1.67 kristaps 122: };
123:
124: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 125: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 126: struct buf *buf, /* input buffer */ \
1.67 kristaps 127: int ln, /* parse line */ \
1.75 kristaps 128: int ppos, /* original pos in buffer */ \
129: int pos, /* current pos in buffer */ \
1.74 kristaps 130: int *offs /* reset offset of buffer data */
1.67 kristaps 131:
132: typedef enum rofferr (*roffproc)(ROFF_ARGS);
133:
134: struct roffmac {
1.79 kristaps 135: roffproc proc; /* process new macro */
136: roffproc text; /* process as child text of macro */
137: roffproc sub; /* process as child of macro */
138: int flags;
139: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 140: };
141:
1.141 kristaps 142: struct predef {
143: const char *name; /* predefined input name */
144: const char *str; /* replacement symbol */
145: };
146:
147: #define PREDEF(__name, __str) \
148: { (__name), (__str) },
149:
1.266 schwarze 150: /* --- function prototypes ------------------------------------------------ */
151:
1.155 kristaps 152: static void roffnode_cleanscope(struct roff *);
153: static void roffnode_pop(struct roff *);
1.294 schwarze 154: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 155: const char *, int, int);
1.311 schwarze 156: static enum rofferr roff_als(ROFF_ARGS);
1.80 kristaps 157: static enum rofferr roff_block(ROFF_ARGS);
158: static enum rofferr roff_block_text(ROFF_ARGS);
159: static enum rofferr roff_block_sub(ROFF_ARGS);
1.296 schwarze 160: static enum rofferr roff_br(ROFF_ARGS);
1.80 kristaps 161: static enum rofferr roff_cblock(ROFF_ARGS);
1.174 kristaps 162: static enum rofferr roff_cc(ROFF_ARGS);
1.195 schwarze 163: static void roff_ccond(struct roff *, int, int);
1.82 kristaps 164: static enum rofferr roff_cond(ROFF_ARGS);
165: static enum rofferr roff_cond_text(ROFF_ARGS);
166: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.92 schwarze 167: static enum rofferr roff_ds(ROFF_ARGS);
1.303 schwarze 168: static enum rofferr roff_ec(ROFF_ARGS);
169: static enum rofferr roff_eo(ROFF_ARGS);
1.238 schwarze 170: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 171: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 172: static int roff_evalnum(struct roff *, int,
173: const char *, int *, int *, int);
174: static int roff_evalpar(struct roff *, int,
1.261 schwarze 175: const char *, int *, int *, int);
1.198 schwarze 176: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 177: static void roff_free1(struct roff *);
1.180 schwarze 178: static void roff_freereg(struct roffreg *);
1.167 kristaps 179: static void roff_freestr(struct roffkv *);
1.212 schwarze 180: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 181: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 182: static int roff_getop(const char *, int *, char *);
1.181 schwarze 183: static int roff_getregn(const struct roff *,
184: const char *, size_t);
1.273 schwarze 185: static int roff_getregro(const struct roff *,
186: const char *name);
1.207 schwarze 187: static const char *roff_getstrn(const struct roff *,
1.315 schwarze 188: const char *, size_t, int *);
1.271 schwarze 189: static int roff_hasregn(const struct roff *,
190: const char *, size_t);
1.251 schwarze 191: static enum rofferr roff_insec(ROFF_ARGS);
1.178 schwarze 192: static enum rofferr roff_it(ROFF_ARGS);
1.103 kristaps 193: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.265 schwarze 194: static void roff_man_alloc1(struct roff_man *);
195: static void roff_man_free1(struct roff_man *);
1.300 schwarze 196: static enum rofferr roff_manyarg(ROFF_ARGS);
1.89 kristaps 197: static enum rofferr roff_nr(ROFF_ARGS);
1.297 schwarze 198: static enum rofferr roff_onearg(ROFF_ARGS);
1.294 schwarze 199: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 200: int, int);
1.305 schwarze 201: static enum rofferr roff_parsetext(struct roff *, struct buf *,
202: int, int *);
1.306 schwarze 203: static enum rofferr roff_renamed(ROFF_ARGS);
1.238 schwarze 204: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.122 schwarze 205: static enum rofferr roff_rm(ROFF_ARGS);
1.306 schwarze 206: static enum rofferr roff_rn(ROFF_ARGS);
1.203 schwarze 207: static enum rofferr roff_rr(ROFF_ARGS);
1.94 kristaps 208: static void roff_setstr(struct roff *,
1.106 kristaps 209: const char *, const char *, int);
1.207 schwarze 210: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 211: size_t, const char *, size_t, int);
1.105 kristaps 212: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 213: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 214: static enum rofferr roff_Dd(ROFF_ARGS);
1.109 kristaps 215: static enum rofferr roff_TE(ROFF_ARGS);
216: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 217: static enum rofferr roff_EQ(ROFF_ARGS);
218: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 219: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 220: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 221: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 222:
1.266 schwarze 223: /* --- constant data ------------------------------------------------------ */
224:
1.261 schwarze 225: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
226: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
227:
1.294 schwarze 228: const char *__roff_name[MAN_MAX + 1] = {
1.305 schwarze 229: "br", "ce", "ft", "ll",
1.312 schwarze 230: "mc", "po", "rj", "sp",
231: "ta", "ti", NULL,
1.294 schwarze 232: "ab", "ad", "af", "aln",
233: "als", "am", "am1", "ami",
234: "ami1", "as", "as1", "asciify",
235: "backtrace", "bd", "bleedat", "blm",
236: "box", "boxa", "bp", "BP",
237: "break", "breakchar", "brnl", "brp",
1.305 schwarze 238: "brpnl", "c2", "cc",
1.294 schwarze 239: "cf", "cflags", "ch", "char",
240: "chop", "class", "close", "CL",
241: "color", "composite", "continue", "cp",
242: "cropat", "cs", "cu", "da",
243: "dch", "Dd", "de", "de1",
244: "defcolor", "dei", "dei1", "device",
245: "devicem", "di", "do", "ds",
246: "ds1", "dwh", "dt", "ec",
247: "ecr", "ecs", "el", "em",
248: "EN", "eo", "EP", "EQ",
249: "errprint", "ev", "evc", "ex",
250: "fallback", "fam", "fc", "fchar",
251: "fcolor", "fdeferlig", "feature", "fkern",
252: "fl", "flig", "fp", "fps",
253: "fschar", "fspacewidth", "fspecial", "ftr",
254: "fzoom", "gcolor", "hc", "hcode",
255: "hidechar", "hla", "hlm", "hpf",
256: "hpfa", "hpfcode", "hw", "hy",
257: "hylang", "hylen", "hym", "hypp",
258: "hys", "ie", "if", "ig",
259: "index", "it", "itc", "IX",
260: "kern", "kernafter", "kernbefore", "kernpair",
261: "lc", "lc_ctype", "lds", "length",
262: "letadj", "lf", "lg", "lhang",
263: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 264: "ls", "lsm", "lt",
1.294 schwarze 265: "mediasize", "minss", "mk", "mso",
266: "na", "ne", "nh", "nhychar",
267: "nm", "nn", "nop", "nr",
268: "nrf", "nroff", "ns", "nx",
269: "open", "opena", "os", "output",
270: "padj", "papersize", "pc", "pev",
271: "pi", "PI", "pl", "pm",
1.312 schwarze 272: "pn", "pnr", "ps",
1.294 schwarze 273: "psbb", "pshape", "pso", "ptr",
274: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 275: "return", "rfschar", "rhang",
1.294 schwarze 276: "rm", "rn", "rnn", "rr",
277: "rs", "rt", "schar", "sentchar",
278: "shc", "shift", "sizes", "so",
279: "spacewidth", "special", "spreadwarn", "ss",
280: "sty", "substring", "sv", "sy",
1.300 schwarze 281: "T&", "tc", "TE",
1.301 schwarze 282: "TH", "tkf", "tl",
1.294 schwarze 283: "tm", "tm1", "tmc", "tr",
284: "track", "transchar", "trf", "trimat",
285: "trin", "trnt", "troff", "TS",
286: "uf", "ul", "unformat", "unwatch",
287: "unwatchn", "vpt", "vs", "warn",
288: "warnscale", "watch", "watchlength", "watchn",
289: "wh", "while", "write", "writec",
290: "writem", "xflag", ".", NULL,
1.306 schwarze 291: NULL, "text",
1.294 schwarze 292: "Dd", "Dt", "Os", "Sh",
293: "Ss", "Pp", "D1", "Dl",
294: "Bd", "Ed", "Bl", "El",
295: "It", "Ad", "An", "Ap",
296: "Ar", "Cd", "Cm", "Dv",
297: "Er", "Ev", "Ex", "Fa",
298: "Fd", "Fl", "Fn", "Ft",
299: "Ic", "In", "Li", "Nd",
300: "Nm", "Op", "Ot", "Pa",
301: "Rv", "St", "Va", "Vt",
302: "Xr", "%A", "%B", "%D",
303: "%I", "%J", "%N", "%O",
304: "%P", "%R", "%T", "%V",
305: "Ac", "Ao", "Aq", "At",
306: "Bc", "Bf", "Bo", "Bq",
307: "Bsx", "Bx", "Db", "Dc",
308: "Do", "Dq", "Ec", "Ef",
309: "Em", "Eo", "Fx", "Ms",
310: "No", "Ns", "Nx", "Ox",
311: "Pc", "Pf", "Po", "Pq",
312: "Qc", "Ql", "Qo", "Qq",
313: "Re", "Rs", "Sc", "So",
314: "Sq", "Sm", "Sx", "Sy",
315: "Tn", "Ux", "Xc", "Xo",
316: "Fo", "Fc", "Oo", "Oc",
317: "Bk", "Ek", "Bt", "Hf",
318: "Fr", "Ud", "Lb", "Lp",
319: "Lk", "Mt", "Brq", "Bro",
320: "Brc", "%C", "Es", "En",
1.299 schwarze 321: "Dx", "%Q", "%U", "Ta",
322: NULL,
1.294 schwarze 323: "TH", "SH", "SS", "TP",
324: "LP", "PP", "P", "IP",
325: "HP", "SM", "SB", "BI",
326: "IB", "BR", "RB", "R",
327: "B", "I", "IR", "RI",
1.299 schwarze 328: "nf", "fi",
1.294 schwarze 329: "RE", "RS", "DT", "UC",
1.297 schwarze 330: "PD", "AT", "in",
1.294 schwarze 331: "OP", "EX", "EE", "UR",
1.317 schwarze 332: "UE", "MT", "ME", NULL
1.294 schwarze 333: };
334: const char *const *roff_name = __roff_name;
335:
336: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 337: { roff_br, NULL, NULL, 0 }, /* br */
1.305 schwarze 338: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.297 schwarze 339: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 340: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 341: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.312 schwarze 342: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 343: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 344: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 345: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 346: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 347: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 348: { roff_unsupp, NULL, NULL, 0 }, /* ab */
349: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
350: { roff_line_ignore, NULL, NULL, 0 }, /* af */
351: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 352: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 353: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
354: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
355: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
356: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
357: { roff_ds, NULL, NULL, 0 }, /* as */
358: { roff_ds, NULL, NULL, 0 }, /* as1 */
359: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
360: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
361: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
362: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
363: { roff_unsupp, NULL, NULL, 0 }, /* blm */
364: { roff_unsupp, NULL, NULL, 0 }, /* box */
365: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
366: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
367: { roff_unsupp, NULL, NULL, 0 }, /* BP */
368: { roff_unsupp, NULL, NULL, 0 }, /* break */
369: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
370: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 371: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 372: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
373: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
374: { roff_cc, NULL, NULL, 0 }, /* cc */
375: { roff_insec, NULL, NULL, 0 }, /* cf */
376: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
377: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
378: { roff_unsupp, NULL, NULL, 0 }, /* char */
379: { roff_unsupp, NULL, NULL, 0 }, /* chop */
380: { roff_line_ignore, NULL, NULL, 0 }, /* class */
381: { roff_insec, NULL, NULL, 0 }, /* close */
382: { roff_unsupp, NULL, NULL, 0 }, /* CL */
383: { roff_line_ignore, NULL, NULL, 0 }, /* color */
384: { roff_unsupp, NULL, NULL, 0 }, /* composite */
385: { roff_unsupp, NULL, NULL, 0 }, /* continue */
386: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
387: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
388: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
389: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
390: { roff_unsupp, NULL, NULL, 0 }, /* da */
391: { roff_unsupp, NULL, NULL, 0 }, /* dch */
392: { roff_Dd, NULL, NULL, 0 }, /* Dd */
393: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
394: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
395: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
396: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
397: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
398: { roff_unsupp, NULL, NULL, 0 }, /* device */
399: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
400: { roff_unsupp, NULL, NULL, 0 }, /* di */
401: { roff_unsupp, NULL, NULL, 0 }, /* do */
402: { roff_ds, NULL, NULL, 0 }, /* ds */
403: { roff_ds, NULL, NULL, 0 }, /* ds1 */
404: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
405: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 406: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 407: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
408: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
409: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
410: { roff_unsupp, NULL, NULL, 0 }, /* em */
411: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 412: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 413: { roff_unsupp, NULL, NULL, 0 }, /* EP */
414: { roff_EQ, NULL, NULL, 0 }, /* EQ */
415: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
416: { roff_unsupp, NULL, NULL, 0 }, /* ev */
417: { roff_unsupp, NULL, NULL, 0 }, /* evc */
418: { roff_unsupp, NULL, NULL, 0 }, /* ex */
419: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
420: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
421: { roff_unsupp, NULL, NULL, 0 }, /* fc */
422: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
423: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
424: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
425: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
426: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
427: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
428: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
429: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
430: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
431: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
432: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
433: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
434: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
435: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
436: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
437: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
438: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
439: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
440: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
441: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
442: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
443: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
444: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
445: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
446: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
447: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
448: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
449: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
450: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
451: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
452: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
453: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
454: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
455: { roff_unsupp, NULL, NULL, 0 }, /* index */
456: { roff_it, NULL, NULL, 0 }, /* it */
457: { roff_unsupp, NULL, NULL, 0 }, /* itc */
458: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
459: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
460: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
461: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
462: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
463: { roff_unsupp, NULL, NULL, 0 }, /* lc */
464: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
465: { roff_unsupp, NULL, NULL, 0 }, /* lds */
466: { roff_unsupp, NULL, NULL, 0 }, /* length */
467: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
468: { roff_insec, NULL, NULL, 0 }, /* lf */
469: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
470: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
471: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
472: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
473: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
474: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
475: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
476: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
477: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
478: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
479: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
480: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
481: { roff_insec, NULL, NULL, 0 }, /* mso */
482: { roff_line_ignore, NULL, NULL, 0 }, /* na */
483: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
484: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
485: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
486: { roff_unsupp, NULL, NULL, 0 }, /* nm */
487: { roff_unsupp, NULL, NULL, 0 }, /* nn */
488: { roff_unsupp, NULL, NULL, 0 }, /* nop */
489: { roff_nr, NULL, NULL, 0 }, /* nr */
490: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
491: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
492: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
493: { roff_insec, NULL, NULL, 0 }, /* nx */
494: { roff_insec, NULL, NULL, 0 }, /* open */
495: { roff_insec, NULL, NULL, 0 }, /* opena */
496: { roff_line_ignore, NULL, NULL, 0 }, /* os */
497: { roff_unsupp, NULL, NULL, 0 }, /* output */
498: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
499: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
500: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
501: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
502: { roff_insec, NULL, NULL, 0 }, /* pi */
503: { roff_unsupp, NULL, NULL, 0 }, /* PI */
504: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
505: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
506: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
507: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
508: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
509: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
510: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
511: { roff_insec, NULL, NULL, 0 }, /* pso */
512: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
513: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
514: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
515: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
516: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
517: { roff_unsupp, NULL, NULL, 0 }, /* return */
518: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
519: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
520: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 521: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 522: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
523: { roff_rr, NULL, NULL, 0 }, /* rr */
524: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
525: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
526: { roff_unsupp, NULL, NULL, 0 }, /* schar */
527: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
528: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
529: { roff_unsupp, NULL, NULL, 0 }, /* shift */
530: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
531: { roff_so, NULL, NULL, 0 }, /* so */
532: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
533: { roff_line_ignore, NULL, NULL, 0 }, /* special */
534: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
535: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
536: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
537: { roff_unsupp, NULL, NULL, 0 }, /* substring */
538: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
539: { roff_insec, NULL, NULL, 0 }, /* sy */
540: { roff_T_, NULL, NULL, 0 }, /* T& */
541: { roff_unsupp, NULL, NULL, 0 }, /* tc */
542: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 543: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 544: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
545: { roff_unsupp, NULL, NULL, 0 }, /* tl */
546: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
547: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
548: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
549: { roff_tr, NULL, NULL, 0 }, /* tr */
550: { roff_line_ignore, NULL, NULL, 0 }, /* track */
551: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
552: { roff_insec, NULL, NULL, 0 }, /* trf */
553: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
554: { roff_unsupp, NULL, NULL, 0 }, /* trin */
555: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
556: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
557: { roff_TS, NULL, NULL, 0 }, /* TS */
558: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
559: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
560: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
561: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
562: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
563: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
564: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
565: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
566: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
567: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
568: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
569: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
570: { roff_unsupp, NULL, NULL, 0 }, /* wh */
571: { roff_unsupp, NULL, NULL, 0 }, /* while */
572: { roff_insec, NULL, NULL, 0 }, /* write */
573: { roff_insec, NULL, NULL, 0 }, /* writec */
574: { roff_insec, NULL, NULL, 0 }, /* writem */
575: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
576: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 577: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 578: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 579: };
580:
1.141 kristaps 581: /* Array of injected predefined strings. */
582: #define PREDEFS_MAX 38
583: static const struct predef predefs[PREDEFS_MAX] = {
584: #include "predefs.in"
585: };
586:
1.305 schwarze 587: static int roffce_lines; /* number of input lines to center */
588: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 589: static int roffit_lines; /* number of lines to delay */
590: static char *roffit_macro; /* nil-terminated macro line */
591:
1.207 schwarze 592:
1.266 schwarze 593: /* --- request table ------------------------------------------------------ */
594:
1.295 schwarze 595: struct ohash *
596: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 597: {
1.295 schwarze 598: struct ohash *htab;
599: struct roffreq *req;
600: enum roff_tok tok;
601: size_t sz;
602: unsigned int slot;
1.85 kristaps 603:
1.295 schwarze 604: htab = mandoc_malloc(sizeof(*htab));
605: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 606:
1.295 schwarze 607: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 608: if (roff_name[tok] == NULL)
609: continue;
1.295 schwarze 610: sz = strlen(roff_name[tok]);
611: req = mandoc_malloc(sizeof(*req) + sz + 1);
612: req->tok = tok;
613: memcpy(req->name, roff_name[tok], sz + 1);
614: slot = ohash_qlookup(htab, req->name);
615: ohash_insert(htab, slot, req);
1.85 kristaps 616: }
1.295 schwarze 617: return htab;
1.85 kristaps 618: }
619:
1.295 schwarze 620: void
621: roffhash_free(struct ohash *htab)
1.67 kristaps 622: {
1.295 schwarze 623: struct roffreq *req;
624: unsigned int slot;
1.67 kristaps 625:
1.295 schwarze 626: if (htab == NULL)
627: return;
628: for (req = ohash_first(htab, &slot); req != NULL;
629: req = ohash_next(htab, &slot))
630: free(req);
631: ohash_delete(htab);
632: free(htab);
633: }
634:
635: enum roff_tok
636: roffhash_find(struct ohash *htab, const char *name, size_t sz)
637: {
638: struct roffreq *req;
639: const char *end;
640:
641: if (sz) {
642: end = name + sz;
643: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
644: } else
645: req = ohash_find(htab, ohash_qlookup(htab, name));
646: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 647: }
648:
1.266 schwarze 649: /* --- stack of request blocks -------------------------------------------- */
650:
1.67 kristaps 651: /*
652: * Pop the current node off of the stack of roff instructions currently
653: * pending.
654: */
655: static void
656: roffnode_pop(struct roff *r)
657: {
658: struct roffnode *p;
659:
1.75 kristaps 660: assert(r->last);
1.207 schwarze 661: p = r->last;
1.82 kristaps 662:
1.75 kristaps 663: r->last = r->last->parent;
1.106 kristaps 664: free(p->name);
665: free(p->end);
1.67 kristaps 666: free(p);
667: }
668:
669: /*
670: * Push a roff node onto the instruction stack. This must later be
671: * removed with roffnode_pop().
672: */
1.98 schwarze 673: static void
1.294 schwarze 674: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 675: int line, int col)
1.67 kristaps 676: {
677: struct roffnode *p;
678:
1.98 schwarze 679: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 680: p->tok = tok;
1.106 kristaps 681: if (name)
682: p->name = mandoc_strdup(name);
1.67 kristaps 683: p->parent = r->last;
684: p->line = line;
685: p->col = col;
1.198 schwarze 686: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 687:
688: r->last = p;
689: }
690:
1.266 schwarze 691: /* --- roff parser state data management ---------------------------------- */
692:
1.67 kristaps 693: static void
694: roff_free1(struct roff *r)
695: {
1.176 schwarze 696: struct tbl_node *tbl;
1.167 kristaps 697: int i;
1.67 kristaps 698:
1.176 schwarze 699: while (NULL != (tbl = r->first_tbl)) {
700: r->first_tbl = tbl->next;
701: tbl_free(tbl);
1.109 kristaps 702: }
1.113 kristaps 703: r->first_tbl = r->last_tbl = r->tbl = NULL;
704:
1.319 ! schwarze 705: if (r->last_eqn != NULL)
! 706: eqn_free(r->last_eqn);
! 707: r->last_eqn = r->eqn = NULL;
1.125 kristaps 708:
1.67 kristaps 709: while (r->last)
710: roffnode_pop(r);
1.109 kristaps 711:
1.223 schwarze 712: free (r->rstack);
713: r->rstack = NULL;
714: r->rstacksz = 0;
715: r->rstackpos = -1;
716:
717: roff_freereg(r->regtab);
718: r->regtab = NULL;
719:
1.167 kristaps 720: roff_freestr(r->strtab);
1.306 schwarze 721: roff_freestr(r->rentab);
1.167 kristaps 722: roff_freestr(r->xmbtab);
1.306 schwarze 723: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 724:
725: if (r->xtab)
726: for (i = 0; i < 128; i++)
727: free(r->xtab[i].p);
728: free(r->xtab);
729: r->xtab = NULL;
1.67 kristaps 730: }
731:
732: void
733: roff_reset(struct roff *r)
734: {
735: roff_free1(r);
1.227 schwarze 736: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 737: r->control = '\0';
738: r->escape = '\\';
1.307 schwarze 739: roffce_lines = 0;
740: roffce_node = NULL;
741: roffit_lines = 0;
742: roffit_macro = NULL;
1.67 kristaps 743: }
744:
745: void
746: roff_free(struct roff *r)
747: {
748: roff_free1(r);
1.295 schwarze 749: roffhash_free(r->reqtab);
1.67 kristaps 750: free(r);
751: }
752:
753: struct roff *
1.279 schwarze 754: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 755: {
756: struct roff *r;
757:
1.98 schwarze 758: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 759: r->parse = parse;
1.295 schwarze 760: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.199 schwarze 761: r->options = options;
1.227 schwarze 762: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 763: r->rstackpos = -1;
1.303 schwarze 764: r->escape = '\\';
1.277 schwarze 765: return r;
1.265 schwarze 766: }
767:
1.266 schwarze 768: /* --- syntax tree state data management ---------------------------------- */
769:
1.265 schwarze 770: static void
771: roff_man_free1(struct roff_man *man)
772: {
773:
1.266 schwarze 774: if (man->first != NULL)
775: roff_node_delete(man, man->first);
1.265 schwarze 776: free(man->meta.msec);
777: free(man->meta.vol);
778: free(man->meta.os);
779: free(man->meta.arch);
780: free(man->meta.title);
781: free(man->meta.name);
782: free(man->meta.date);
783: }
784:
785: static void
786: roff_man_alloc1(struct roff_man *man)
787: {
788:
789: memset(&man->meta, 0, sizeof(man->meta));
790: man->first = mandoc_calloc(1, sizeof(*man->first));
791: man->first->type = ROFFT_ROOT;
792: man->last = man->first;
793: man->last_es = NULL;
794: man->flags = 0;
795: man->macroset = MACROSET_NONE;
796: man->lastsec = man->lastnamed = SEC_NONE;
797: man->next = ROFF_NEXT_CHILD;
798: }
799:
800: void
801: roff_man_reset(struct roff_man *man)
802: {
803:
804: roff_man_free1(man);
805: roff_man_alloc1(man);
806: }
807:
808: void
809: roff_man_free(struct roff_man *man)
810: {
811:
812: roff_man_free1(man);
813: free(man);
814: }
815:
816: struct roff_man *
817: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.316 schwarze 818: const char *os_s, int quick)
1.265 schwarze 819: {
820: struct roff_man *man;
821:
822: man = mandoc_calloc(1, sizeof(*man));
823: man->parse = parse;
824: man->roff = roff;
1.316 schwarze 825: man->os_s = os_s;
1.265 schwarze 826: man->quick = quick;
827: roff_man_alloc1(man);
1.296 schwarze 828: roff->man = man;
1.277 schwarze 829: return man;
1.67 kristaps 830: }
831:
1.266 schwarze 832: /* --- syntax tree handling ----------------------------------------------- */
833:
834: struct roff_node *
835: roff_node_alloc(struct roff_man *man, int line, int pos,
836: enum roff_type type, int tok)
837: {
838: struct roff_node *n;
839:
840: n = mandoc_calloc(1, sizeof(*n));
841: n->line = line;
842: n->pos = pos;
843: n->tok = tok;
844: n->type = type;
845: n->sec = man->lastsec;
846:
847: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 848: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 849: else
1.285 schwarze 850: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 851: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 852: n->flags |= NODE_LINE;
1.266 schwarze 853: man->flags &= ~MDOC_NEWLINE;
854:
1.277 schwarze 855: return n;
1.266 schwarze 856: }
857:
858: void
859: roff_node_append(struct roff_man *man, struct roff_node *n)
860: {
861:
862: switch (man->next) {
863: case ROFF_NEXT_SIBLING:
1.281 schwarze 864: if (man->last->next != NULL) {
865: n->next = man->last->next;
866: man->last->next->prev = n;
867: } else
868: man->last->parent->last = n;
1.266 schwarze 869: man->last->next = n;
870: n->prev = man->last;
871: n->parent = man->last->parent;
872: break;
873: case ROFF_NEXT_CHILD:
1.287 schwarze 874: if (man->last->child != NULL) {
875: n->next = man->last->child;
876: man->last->child->prev = n;
877: } else
878: man->last->last = n;
1.266 schwarze 879: man->last->child = n;
880: n->parent = man->last;
881: break;
882: default:
883: abort();
884: }
1.282 schwarze 885: man->last = n;
1.266 schwarze 886:
887: switch (n->type) {
888: case ROFFT_HEAD:
889: n->parent->head = n;
890: break;
891: case ROFFT_BODY:
1.282 schwarze 892: if (n->end != ENDBODY_NOT)
893: return;
1.266 schwarze 894: n->parent->body = n;
895: break;
896: case ROFFT_TAIL:
897: n->parent->tail = n;
898: break;
899: default:
1.282 schwarze 900: return;
1.266 schwarze 901: }
1.282 schwarze 902:
903: /*
904: * Copy over the normalised-data pointer of our parent. Not
905: * everybody has one, but copying a null pointer is fine.
906: */
907:
908: n->norm = n->parent->norm;
909: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 910: }
911:
1.267 schwarze 912: void
913: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
914: {
915: struct roff_node *n;
916:
917: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
918: n->string = roff_strdup(man->roff, word);
919: roff_node_append(man, n);
1.286 schwarze 920: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 921: man->next = ROFF_NEXT_SIBLING;
922: }
923:
924: void
925: roff_word_append(struct roff_man *man, const char *word)
926: {
927: struct roff_node *n;
928: char *addstr, *newstr;
929:
930: n = man->last;
931: addstr = roff_strdup(man->roff, word);
932: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
933: free(addstr);
934: free(n->string);
935: n->string = newstr;
936: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 937: }
938:
939: void
940: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
941: {
942: struct roff_node *n;
943:
944: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
945: roff_node_append(man, n);
946: man->next = ROFF_NEXT_CHILD;
947: }
948:
949: struct roff_node *
950: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
951: {
952: struct roff_node *n;
953:
954: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
955: roff_node_append(man, n);
956: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 957: return n;
1.267 schwarze 958: }
959:
1.266 schwarze 960: struct roff_node *
961: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
962: {
963: struct roff_node *n;
964:
965: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
966: roff_node_append(man, n);
967: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 968: return n;
1.266 schwarze 969: }
970:
971: struct roff_node *
972: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
973: {
974: struct roff_node *n;
975:
976: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
977: roff_node_append(man, n);
978: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 979: return n;
1.267 schwarze 980: }
981:
982: void
983: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
984: {
985: struct roff_node *n;
986:
987: if (man->macroset == MACROSET_MAN)
1.302 schwarze 988: man_breakscope(man, ROFF_TS);
1.267 schwarze 989: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
990: n->span = tbl;
991: roff_node_append(man, n);
1.286 schwarze 992: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 993: man->next = ROFF_NEXT_SIBLING;
1.266 schwarze 994: }
995:
996: void
997: roff_node_unlink(struct roff_man *man, struct roff_node *n)
998: {
999:
1000: /* Adjust siblings. */
1001:
1002: if (n->prev)
1003: n->prev->next = n->next;
1004: if (n->next)
1005: n->next->prev = n->prev;
1006:
1007: /* Adjust parent. */
1008:
1009: if (n->parent != NULL) {
1010: if (n->parent->child == n)
1011: n->parent->child = n->next;
1012: if (n->parent->last == n)
1013: n->parent->last = n->prev;
1014: }
1015:
1016: /* Adjust parse point. */
1017:
1018: if (man == NULL)
1019: return;
1020: if (man->last == n) {
1021: if (n->prev == NULL) {
1022: man->last = n->parent;
1023: man->next = ROFF_NEXT_CHILD;
1024: } else {
1025: man->last = n->prev;
1026: man->next = ROFF_NEXT_SIBLING;
1027: }
1028: }
1029: if (man->first == n)
1030: man->first = NULL;
1031: }
1032:
1033: void
1034: roff_node_free(struct roff_node *n)
1035: {
1036:
1037: if (n->args != NULL)
1038: mdoc_argv_free(n->args);
1039: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1040: free(n->norm);
1.319 ! schwarze 1041: if (n->eqn != NULL)
! 1042: eqn_box_free(n->eqn);
1.266 schwarze 1043: free(n->string);
1044: free(n);
1045: }
1046:
1047: void
1048: roff_node_delete(struct roff_man *man, struct roff_node *n)
1049: {
1050:
1051: while (n->child != NULL)
1052: roff_node_delete(man, n->child);
1053: roff_node_unlink(man, n);
1054: roff_node_free(n);
1.269 schwarze 1055: }
1056:
1057: void
1058: deroff(char **dest, const struct roff_node *n)
1059: {
1060: char *cp;
1061: size_t sz;
1062:
1063: if (n->type != ROFFT_TEXT) {
1064: for (n = n->child; n != NULL; n = n->next)
1065: deroff(dest, n);
1066: return;
1067: }
1068:
1.288 schwarze 1069: /* Skip leading whitespace. */
1.269 schwarze 1070:
1.288 schwarze 1071: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1072: if (cp[0] == '\\' && cp[1] != '\0' &&
1073: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1074: cp++;
1.288 schwarze 1075: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1076: break;
1077: }
1078:
1.289 schwarze 1079: /* Skip trailing backslash. */
1080:
1081: sz = strlen(cp);
1.290 schwarze 1082: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1083: sz--;
1084:
1.269 schwarze 1085: /* Skip trailing whitespace. */
1086:
1.289 schwarze 1087: for (; sz; sz--)
1.269 schwarze 1088: if ( ! isspace((unsigned char)cp[sz-1]))
1089: break;
1090:
1091: /* Skip empty strings. */
1092:
1093: if (sz == 0)
1094: return;
1095:
1096: if (*dest == NULL) {
1097: *dest = mandoc_strndup(cp, sz);
1098: return;
1099: }
1100:
1101: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1102: free(*dest);
1103: *dest = cp;
1.266 schwarze 1104: }
1105:
1106: /* --- main functions of the roff parser ---------------------------------- */
1107:
1.94 kristaps 1108: /*
1.206 schwarze 1109: * In the current line, expand escape sequences that tend to get
1110: * used in numerical expressions and conditional requests.
1111: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1112: */
1.172 schwarze 1113: static enum rofferr
1.238 schwarze 1114: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1115: {
1.208 schwarze 1116: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1117: const char *start; /* start of the string to process */
1.209 schwarze 1118: char *stesc; /* start of an escape sequence ('\\') */
1.108 schwarze 1119: const char *stnam; /* start of the name, after "[(*" */
1120: const char *cp; /* end of the name, e.g. before ']' */
1121: const char *res; /* the string to be substituted */
1.238 schwarze 1122: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1123: size_t maxl; /* expected length of the escape name */
1124: size_t naml; /* actual length of the escape name */
1.237 schwarze 1125: enum mandoc_esc esc; /* type of the escape sequence */
1.316 schwarze 1126: enum mandoc_os os_e; /* kind of RCS id seen */
1.237 schwarze 1127: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1128: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1129: int npos; /* position in numeric expression */
1.218 schwarze 1130: int arg_complete; /* argument not interrupted by eol */
1.303 schwarze 1131: int done; /* no more input available */
1.315 schwarze 1132: int deftype; /* type of definition to paste */
1.206 schwarze 1133: char term; /* character terminating the escape */
1.94 kristaps 1134:
1.303 schwarze 1135: /* Search forward for comments. */
1136:
1137: done = 0;
1138: start = buf->buf + pos;
1139: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1140: if (stesc[0] != r->escape || stesc[1] == '\0')
1141: continue;
1142: stesc++;
1143: if (*stesc != '"' && *stesc != '#')
1144: continue;
1.313 schwarze 1145:
1146: /* Comment found, look for RCS id. */
1147:
1148: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.316 schwarze 1149: os_e = MANDOC_OS_OPENBSD;
1.313 schwarze 1150: cp += 8;
1151: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.316 schwarze 1152: os_e = MANDOC_OS_NETBSD;
1.313 schwarze 1153: cp += 7;
1154: }
1155: if (cp != NULL &&
1156: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1157: strchr(cp, '$') != NULL) {
1158: if (r->man->meta.rcsids & (1 << os_e))
1159: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1160: ln, stesc + 1 - buf->buf, stesc + 1);
1.313 schwarze 1161: r->man->meta.rcsids |= 1 << os_e;
1.314 schwarze 1162: }
1.313 schwarze 1163:
1164: /* Handle trailing whitespace. */
1165:
1.303 schwarze 1166: cp = strchr(stesc--, '\0') - 1;
1167: if (*cp == '\n') {
1168: done = 1;
1169: cp--;
1170: }
1171: if (*cp == ' ' || *cp == '\t')
1172: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1173: ln, cp - buf->buf, NULL);
1174: while (stesc > start && stesc[-1] == ' ')
1175: stesc--;
1176: *stesc = '\0';
1177: break;
1178: }
1179: if (stesc == start)
1180: return ROFF_CONT;
1181: stesc--;
1182:
1183: /* Notice the end of the input. */
1184:
1185: if (*stesc == '\n') {
1186: *stesc-- = '\0';
1187: done = 1;
1188: }
1189:
1.170 schwarze 1190: expand_count = 0;
1.303 schwarze 1191: while (stesc >= start) {
1.170 schwarze 1192:
1.205 schwarze 1193: /* Search backwards for the next backslash. */
1194:
1.303 schwarze 1195: if (*stesc != r->escape) {
1196: if (*stesc == '\\') {
1197: *stesc = '\0';
1198: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1199: buf->buf, stesc + 1) + 1;
1200: start = nbuf + pos;
1201: stesc = nbuf + (stesc - buf->buf);
1202: free(buf->buf);
1203: buf->buf = nbuf;
1204: }
1205: stesc--;
1.205 schwarze 1206: continue;
1.303 schwarze 1207: }
1.205 schwarze 1208:
1209: /* If it is escaped, skip it. */
1210:
1211: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1212: if (*cp != r->escape)
1.205 schwarze 1213: break;
1214:
1.238 schwarze 1215: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1216: while (stesc > cp)
1217: *stesc-- = '\\';
1.205 schwarze 1218: continue;
1.303 schwarze 1219: } else if (stesc[1] != '\0') {
1220: *stesc = '\\';
1221: } else {
1222: *stesc-- = '\0';
1223: if (done)
1224: continue;
1225: else
1226: return ROFF_APPEND;
1.205 schwarze 1227: }
1.108 schwarze 1228:
1.206 schwarze 1229: /* Decide whether to expand or to check only. */
1.108 schwarze 1230:
1.206 schwarze 1231: term = '\0';
1.205 schwarze 1232: cp = stesc + 1;
1.181 schwarze 1233: switch (*cp) {
1.207 schwarze 1234: case '*':
1.181 schwarze 1235: res = NULL;
1236: break;
1.207 schwarze 1237: case 'B':
1238: case 'w':
1.206 schwarze 1239: term = cp[1];
1240: /* FALLTHROUGH */
1.207 schwarze 1241: case 'n':
1.181 schwarze 1242: res = ubuf;
1243: break;
1244: default:
1.237 schwarze 1245: esc = mandoc_escape(&cp, &stnam, &inaml);
1246: if (esc == ESCAPE_ERROR ||
1247: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1248: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1249: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1250: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1251: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1252: stesc--;
1.205 schwarze 1253: continue;
1.152 kristaps 1254: }
1255:
1.205 schwarze 1256: if (EXPAND_LIMIT < ++expand_count) {
1257: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1258: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1259: return ROFF_IGN;
1.205 schwarze 1260: }
1.108 schwarze 1261:
1262: /*
1263: * The third character decides the length
1.181 schwarze 1264: * of the name of the string or register.
1.108 schwarze 1265: * Save a pointer to the name.
1266: */
1267:
1.238 schwarze 1268: if (term == '\0') {
1.206 schwarze 1269: switch (*++cp) {
1.207 schwarze 1270: case '\0':
1.206 schwarze 1271: maxl = 0;
1272: break;
1.207 schwarze 1273: case '(':
1.206 schwarze 1274: cp++;
1275: maxl = 2;
1276: break;
1.207 schwarze 1277: case '[':
1.206 schwarze 1278: cp++;
1279: term = ']';
1280: maxl = 0;
1281: break;
1282: default:
1283: maxl = 1;
1284: break;
1285: }
1286: } else {
1287: cp += 2;
1.94 kristaps 1288: maxl = 0;
1289: }
1.108 schwarze 1290: stnam = cp;
1.94 kristaps 1291:
1.108 schwarze 1292: /* Advance to the end of the name. */
1.94 kristaps 1293:
1.253 schwarze 1294: naml = 0;
1.218 schwarze 1295: arg_complete = 1;
1.253 schwarze 1296: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1297: if (*cp == '\0') {
1.219 schwarze 1298: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1299: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1300: arg_complete = 0;
1.206 schwarze 1301: break;
1.153 kristaps 1302: }
1.238 schwarze 1303: if (maxl == 0 && *cp == term) {
1.206 schwarze 1304: cp++;
1.253 schwarze 1305: break;
1306: }
1307: if (*cp++ != '\\' || stesc[1] != 'w') {
1308: naml++;
1309: continue;
1310: }
1311: switch (mandoc_escape(&cp, NULL, NULL)) {
1312: case ESCAPE_SPECIAL:
1313: case ESCAPE_UNICODE:
1314: case ESCAPE_NUMBERED:
1315: case ESCAPE_OVERSTRIKE:
1316: naml++;
1317: break;
1318: default:
1.94 kristaps 1319: break;
1.206 schwarze 1320: }
1.94 kristaps 1321: }
1322:
1.108 schwarze 1323: /*
1324: * Retrieve the replacement string; if it is
1325: * undefined, resume searching for escapes.
1326: */
1327:
1.206 schwarze 1328: switch (stesc[1]) {
1.207 schwarze 1329: case '*':
1.315 schwarze 1330: if (arg_complete) {
1331: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1332: res = roff_getstrn(r, stnam, naml, &deftype);
1333: }
1.206 schwarze 1334: break;
1.207 schwarze 1335: case 'B':
1.206 schwarze 1336: npos = 0;
1.218 schwarze 1337: ubuf[0] = arg_complete &&
1.261 schwarze 1338: roff_evalnum(r, ln, stnam, &npos,
1339: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1340: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1341: ubuf[1] = '\0';
1342: break;
1.207 schwarze 1343: case 'n':
1.218 schwarze 1344: if (arg_complete)
1345: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1346: roff_getregn(r, stnam, naml));
1347: else
1348: ubuf[0] = '\0';
1.206 schwarze 1349: break;
1.207 schwarze 1350: case 'w':
1.218 schwarze 1351: /* use even incomplete args */
1.208 schwarze 1352: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1353: 24 * (int)naml);
1354: break;
1355: }
1.94 kristaps 1356:
1.238 schwarze 1357: if (res == NULL) {
1.219 schwarze 1358: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1359: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1360: "%.*s", (int)naml, stnam);
1.142 kristaps 1361: res = "";
1.246 schwarze 1362: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1363: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1364: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1365: return ROFF_IGN;
1.94 kristaps 1366: }
1367:
1.108 schwarze 1368: /* Replace the escape sequence by the string. */
1369:
1.209 schwarze 1370: *stesc = '\0';
1.238 schwarze 1371: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1372: buf->buf, res, cp) + 1;
1.94 kristaps 1373:
1.205 schwarze 1374: /* Prepare for the next replacement. */
1.94 kristaps 1375:
1.205 schwarze 1376: start = nbuf + pos;
1.238 schwarze 1377: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1378: free(buf->buf);
1379: buf->buf = nbuf;
1.154 kristaps 1380: }
1.277 schwarze 1381: return ROFF_CONT;
1.154 kristaps 1382: }
1383:
1384: /*
1.275 schwarze 1385: * Process text streams.
1.154 kristaps 1386: */
1387: static enum rofferr
1.305 schwarze 1388: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1389: {
1390: size_t sz;
1391: const char *start;
1.178 schwarze 1392: char *p;
1393: int isz;
1.154 kristaps 1394: enum mandoc_esc esc;
1395:
1.275 schwarze 1396: /* Spring the input line trap. */
1397:
1398: if (roffit_lines == 1) {
1399: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1400: free(buf->buf);
1401: buf->buf = p;
1402: buf->sz = isz + 1;
1403: *offs = 0;
1404: free(roffit_macro);
1405: roffit_lines = 0;
1.277 schwarze 1406: return ROFF_REPARSE;
1.275 schwarze 1407: } else if (roffit_lines > 1)
1408: --roffit_lines;
1409:
1.305 schwarze 1410: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1411: if (roffce_lines < 1) {
1412: r->man->last = roffce_node;
1413: r->man->next = ROFF_NEXT_SIBLING;
1414: roffce_lines = 0;
1415: roffce_node = NULL;
1416: } else
1417: roffce_lines--;
1418: }
1419:
1.275 schwarze 1420: /* Convert all breakable hyphens into ASCII_HYPH. */
1421:
1.238 schwarze 1422: start = p = buf->buf + pos;
1.154 kristaps 1423:
1.238 schwarze 1424: while (*p != '\0') {
1.154 kristaps 1425: sz = strcspn(p, "-\\");
1426: p += sz;
1427:
1.238 schwarze 1428: if (*p == '\0')
1.159 kristaps 1429: break;
1430:
1.238 schwarze 1431: if (*p == '\\') {
1.154 kristaps 1432: /* Skip over escapes. */
1433: p++;
1.189 schwarze 1434: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1435: if (esc == ESCAPE_ERROR)
1.154 kristaps 1436: break;
1.264 schwarze 1437: while (*p == '-')
1438: p++;
1.155 kristaps 1439: continue;
1.159 kristaps 1440: } else if (p == start) {
1.158 kristaps 1441: p++;
1.155 kristaps 1442: continue;
1.158 kristaps 1443: }
1.155 kristaps 1444:
1.171 schwarze 1445: if (isalpha((unsigned char)p[-1]) &&
1446: isalpha((unsigned char)p[1]))
1.155 kristaps 1447: *p = ASCII_HYPH;
1448: p++;
1.94 kristaps 1449: }
1.277 schwarze 1450: return ROFF_CONT;
1.94 kristaps 1451: }
1452:
1.67 kristaps 1453: enum rofferr
1.238 schwarze 1454: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1455: {
1.294 schwarze 1456: enum roff_tok t;
1.109 kristaps 1457: enum rofferr e;
1.238 schwarze 1458: int pos; /* parse point */
1.243 schwarze 1459: int spos; /* saved parse point for messages */
1.238 schwarze 1460: int ppos; /* original offset in buf->buf */
1461: int ctl; /* macro line (boolean) */
1462:
1463: ppos = pos = *offs;
1.79 kristaps 1464:
1.230 schwarze 1465: /* Handle in-line equation delimiters. */
1466:
1.236 schwarze 1467: if (r->tbl == NULL &&
1468: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1469: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1470: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1471: if (e == ROFF_REPARSE)
1.277 schwarze 1472: return e;
1.230 schwarze 1473: assert(e == ROFF_CONT);
1474: }
1475:
1476: /* Expand some escape sequences. */
1.94 kristaps 1477:
1.238 schwarze 1478: e = roff_res(r, buf, ln, pos);
1.303 schwarze 1479: if (e == ROFF_IGN || e == ROFF_APPEND)
1.277 schwarze 1480: return e;
1.238 schwarze 1481: assert(e == ROFF_CONT);
1.94 kristaps 1482:
1.238 schwarze 1483: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1484:
1.94 kristaps 1485: /*
1.79 kristaps 1486: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1487: * text through the macro's filter.
1488: * Equations process all content themselves.
1489: * Tables process almost all content themselves, but we want
1490: * to warn about macros before passing it there.
1.79 kristaps 1491: */
1.74 kristaps 1492:
1.252 schwarze 1493: if (r->last != NULL && ! ctl) {
1.78 kristaps 1494: t = r->last->tok;
1.238 schwarze 1495: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1496: if (e == ROFF_IGN)
1.277 schwarze 1497: return e;
1.294 schwarze 1498: assert(e == ROFF_CONT);
1.182 schwarze 1499: }
1.319 ! schwarze 1500: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
! 1501: eqn_read(r->eqn, buf->buf + ppos);
! 1502: return ROFF_IGN;
! 1503: }
1.252 schwarze 1504: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.277 schwarze 1505: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.252 schwarze 1506: if ( ! ctl)
1.305 schwarze 1507: return roff_parsetext(r, buf, pos, offs);
1.228 schwarze 1508:
1509: /* Skip empty request lines. */
1510:
1.238 schwarze 1511: if (buf->buf[pos] == '"') {
1.228 schwarze 1512: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1513: ln, pos, NULL);
1.277 schwarze 1514: return ROFF_IGN;
1.238 schwarze 1515: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1516: return ROFF_IGN;
1.67 kristaps 1517:
1.79 kristaps 1518: /*
1519: * If a scope is open, go to the child handler for that macro,
1520: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1521: * Don't do so if an equation is open.
1.79 kristaps 1522: */
1.78 kristaps 1523:
1.79 kristaps 1524: if (r->last) {
1525: t = r->last->tok;
1.277 schwarze 1526: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1527: }
1.78 kristaps 1528:
1.243 schwarze 1529: /* No scope is open. This is a new request or macro. */
1530:
1531: spos = pos;
1532: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1533:
1534: /* Tables ignore most macros. */
1535:
1.308 schwarze 1536: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1537: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.243 schwarze 1538: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1539: ln, pos, buf->buf + spos);
1.308 schwarze 1540: if (t != TOKEN_NONE)
1.277 schwarze 1541: return ROFF_IGN;
1.257 schwarze 1542: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1543: pos++;
1.291 schwarze 1544: while (buf->buf[pos] == ' ')
1.257 schwarze 1545: pos++;
1.277 schwarze 1546: return tbl_read(r->tbl, ln, buf->buf, pos);
1.243 schwarze 1547: }
1548:
1.305 schwarze 1549: /* For now, let high level macros abort .ce mode. */
1550:
1551: if (ctl && roffce_node != NULL &&
1552: (t == TOKEN_NONE || t == ROFF_EQ || t == ROFF_TS)) {
1553: r->man->last = roffce_node;
1554: r->man->next = ROFF_NEXT_SIBLING;
1555: roffce_lines = 0;
1556: roffce_node = NULL;
1557: }
1558:
1.79 kristaps 1559: /*
1.243 schwarze 1560: * This is neither a roff request nor a user-defined macro.
1561: * Let the standard macro set parsers handle it.
1.79 kristaps 1562: */
1.67 kristaps 1563:
1.294 schwarze 1564: if (t == TOKEN_NONE)
1.277 schwarze 1565: return ROFF_CONT;
1.243 schwarze 1566:
1567: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1568:
1.296 schwarze 1569: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1570: }
1571:
1.117 kristaps 1572: void
1.74 kristaps 1573: roff_endparse(struct roff *r)
1574: {
1575:
1.110 kristaps 1576: if (r->last)
1.221 schwarze 1577: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1578: r->last->line, r->last->col,
1.295 schwarze 1579: roff_name[r->last->tok]);
1.117 kristaps 1580:
1.125 kristaps 1581: if (r->eqn) {
1.221 schwarze 1582: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.319 ! schwarze 1583: r->eqn->node->line, r->eqn->node->pos, "EQ");
! 1584: eqn_parse(r->eqn);
! 1585: r->eqn = NULL;
1.125 kristaps 1586: }
1587:
1.117 kristaps 1588: if (r->tbl) {
1.221 schwarze 1589: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1590: r->tbl->line, r->tbl->pos, "TS");
1.151 kristaps 1591: tbl_end(&r->tbl);
1.117 kristaps 1592: }
1.67 kristaps 1593: }
1594:
1595: /*
1596: * Parse a roff node's type from the input buffer. This must be in the
1597: * form of ".foo xxx" in the usual way.
1598: */
1.294 schwarze 1599: static enum roff_tok
1.214 schwarze 1600: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1601: {
1.214 schwarze 1602: char *cp;
1.106 kristaps 1603: const char *mac;
1604: size_t maclen;
1.315 schwarze 1605: int deftype;
1.294 schwarze 1606: enum roff_tok t;
1.67 kristaps 1607:
1.214 schwarze 1608: cp = buf + *pos;
1609:
1610: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1611: return TOKEN_NONE;
1.67 kristaps 1612:
1.214 schwarze 1613: mac = cp;
1614: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1615:
1.315 schwarze 1616: deftype = ROFFDEF_USER | ROFFDEF_REN;
1617: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1618: switch (deftype) {
1619: case ROFFDEF_USER:
1620: t = ROFF_USERDEF;
1621: break;
1622: case ROFFDEF_REN:
1623: t = ROFF_RENAMED;
1624: break;
1625: default:
1626: t = roffhash_find(r->reqtab, mac, maclen);
1627: break;
1628: }
1.294 schwarze 1629: if (t != TOKEN_NONE)
1.214 schwarze 1630: *pos = cp - buf;
1.277 schwarze 1631: return t;
1.67 kristaps 1632: }
1633:
1.266 schwarze 1634: /* --- handling of request blocks ----------------------------------------- */
1635:
1.67 kristaps 1636: static enum rofferr
1.76 kristaps 1637: roff_cblock(ROFF_ARGS)
1.67 kristaps 1638: {
1639:
1.79 kristaps 1640: /*
1641: * A block-close `..' should only be invoked as a child of an
1642: * ignore macro, otherwise raise a warning and just ignore it.
1643: */
1644:
1.238 schwarze 1645: if (r->last == NULL) {
1.221 schwarze 1646: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1647: ln, ppos, "..");
1.277 schwarze 1648: return ROFF_IGN;
1.76 kristaps 1649: }
1.67 kristaps 1650:
1.81 kristaps 1651: switch (r->last->tok) {
1.207 schwarze 1652: case ROFF_am:
1.220 schwarze 1653: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1654: case ROFF_ami:
1655: case ROFF_de:
1.108 schwarze 1656: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1657: case ROFF_dei:
1658: case ROFF_ig:
1.81 kristaps 1659: break;
1660: default:
1.221 schwarze 1661: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1662: ln, ppos, "..");
1.277 schwarze 1663: return ROFF_IGN;
1.76 kristaps 1664: }
1.67 kristaps 1665:
1.238 schwarze 1666: if (buf->buf[pos] != '\0')
1.217 schwarze 1667: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1668: ".. %s", buf->buf + pos);
1.71 kristaps 1669:
1670: roffnode_pop(r);
1.76 kristaps 1671: roffnode_cleanscope(r);
1.277 schwarze 1672: return ROFF_IGN;
1.71 kristaps 1673:
1.67 kristaps 1674: }
1675:
1.76 kristaps 1676: static void
1677: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1678: {
1679:
1.76 kristaps 1680: while (r->last) {
1.173 schwarze 1681: if (--r->last->endspan != 0)
1.76 kristaps 1682: break;
1683: roffnode_pop(r);
1684: }
1.67 kristaps 1685: }
1686:
1.195 schwarze 1687: static void
1688: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1689: {
1690:
1.76 kristaps 1691: if (NULL == r->last) {
1.221 schwarze 1692: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1693: ln, ppos, "\\}");
1.195 schwarze 1694: return;
1.76 kristaps 1695: }
1696:
1.82 kristaps 1697: switch (r->last->tok) {
1.207 schwarze 1698: case ROFF_el:
1699: case ROFF_ie:
1700: case ROFF_if:
1.82 kristaps 1701: break;
1702: default:
1.221 schwarze 1703: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1704: ln, ppos, "\\}");
1.195 schwarze 1705: return;
1.75 kristaps 1706: }
1707:
1.76 kristaps 1708: if (r->last->endspan > -1) {
1.221 schwarze 1709: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1710: ln, ppos, "\\}");
1.195 schwarze 1711: return;
1.76 kristaps 1712: }
1713:
1.75 kristaps 1714: roffnode_pop(r);
1.76 kristaps 1715: roffnode_cleanscope(r);
1.195 schwarze 1716: return;
1.76 kristaps 1717: }
1718:
1719: static enum rofferr
1.80 kristaps 1720: roff_block(ROFF_ARGS)
1.76 kristaps 1721: {
1.315 schwarze 1722: const char *name, *value;
1723: char *call, *cp, *iname, *rname;
1724: size_t csz, namesz, rsz;
1725: int deftype;
1.106 kristaps 1726:
1.220 schwarze 1727: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1728:
1.238 schwarze 1729: if (tok == ROFF_de1)
1.220 schwarze 1730: tok = ROFF_de;
1.251 schwarze 1731: else if (tok == ROFF_dei1)
1732: tok = ROFF_dei;
1.238 schwarze 1733: else if (tok == ROFF_am1)
1.220 schwarze 1734: tok = ROFF_am;
1.251 schwarze 1735: else if (tok == ROFF_ami1)
1736: tok = ROFF_ami;
1.220 schwarze 1737:
1738: /* Parse the macro name argument. */
1739:
1.238 schwarze 1740: cp = buf->buf + pos;
1741: if (tok == ROFF_ig) {
1.220 schwarze 1742: iname = NULL;
1743: namesz = 0;
1744: } else {
1745: iname = cp;
1746: namesz = roff_getname(r, &cp, ln, ppos);
1747: iname[namesz] = '\0';
1748: }
1.107 kristaps 1749:
1.220 schwarze 1750: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1751:
1.238 schwarze 1752: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1753: deftype = ROFFDEF_USER;
1754: name = roff_getstrn(r, iname, namesz, &deftype);
1755: if (name == NULL) {
1.220 schwarze 1756: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1757: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1758: "%.*s", (int)namesz, iname);
1759: namesz = 0;
1760: } else
1761: namesz = strlen(name);
1762: } else
1763: name = iname;
1.107 kristaps 1764:
1.238 schwarze 1765: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1766: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1767: ln, ppos, roff_name[tok]);
1.277 schwarze 1768: return ROFF_IGN;
1.220 schwarze 1769: }
1.80 kristaps 1770:
1.106 kristaps 1771: roffnode_push(r, tok, name, ln, ppos);
1772:
1773: /*
1774: * At the beginning of a `de' macro, clear the existing string
1775: * with the same name, if there is one. New content will be
1.193 schwarze 1776: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1777: */
1.107 kristaps 1778:
1.311 schwarze 1779: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 1780: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 1781: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 1782: } else if (tok == ROFF_am || tok == ROFF_ami) {
1783: deftype = ROFFDEF_ANY;
1784: value = roff_getstrn(r, iname, namesz, &deftype);
1785: switch (deftype) { /* Before appending, ... */
1786: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1787: roff_setstrn(&r->strtab, name, namesz,
1788: value, strlen(value), 0);
1789: break;
1790: case ROFFDEF_REN: /* call original standard macro. */
1791: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1792: (int)strlen(value), value);
1793: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1794: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1795: free(call);
1796: break;
1797: case ROFFDEF_STD: /* rename and call standard macro. */
1798: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1799: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1800: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1801: (int)rsz, rname);
1802: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1803: free(call);
1804: free(rname);
1805: break;
1806: default:
1807: break;
1808: }
1.311 schwarze 1809: }
1.76 kristaps 1810:
1.238 schwarze 1811: if (*cp == '\0')
1.277 schwarze 1812: return ROFF_IGN;
1.78 kristaps 1813:
1.220 schwarze 1814: /* Get the custom end marker. */
1.107 kristaps 1815:
1.220 schwarze 1816: iname = cp;
1.213 schwarze 1817: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1818:
1819: /* Resolve the end marker if it is indirect. */
1820:
1.238 schwarze 1821: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1822: deftype = ROFFDEF_USER;
1823: name = roff_getstrn(r, iname, namesz, &deftype);
1824: if (name == NULL) {
1.220 schwarze 1825: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1826: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1827: "%.*s", (int)namesz, iname);
1828: namesz = 0;
1829: } else
1830: namesz = strlen(name);
1831: } else
1832: name = iname;
1833:
1.213 schwarze 1834: if (namesz)
1835: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1836:
1.238 schwarze 1837: if (*cp != '\0')
1.217 schwarze 1838: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 1839: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 1840:
1.277 schwarze 1841: return ROFF_IGN;
1.78 kristaps 1842: }
1843:
1844: static enum rofferr
1.80 kristaps 1845: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1846: {
1.294 schwarze 1847: enum roff_tok t;
1.79 kristaps 1848: int i, j;
1849:
1850: /*
1851: * First check whether a custom macro exists at this level. If
1852: * it does, then check against it. This is some of groff's
1853: * stranger behaviours. If we encountered a custom end-scope
1854: * tag and that tag also happens to be a "real" macro, then we
1855: * need to try interpreting it again as a real macro. If it's
1856: * not, then return ignore. Else continue.
1857: */
1858:
1859: if (r->last->end) {
1.130 kristaps 1860: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1861: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1862: break;
1863:
1.238 schwarze 1864: if (r->last->end[j] == '\0' &&
1865: (buf->buf[i] == '\0' ||
1866: buf->buf[i] == ' ' ||
1867: buf->buf[i] == '\t')) {
1.79 kristaps 1868: roffnode_pop(r);
1869: roffnode_cleanscope(r);
1870:
1.238 schwarze 1871: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1872: i++;
1873:
1874: pos = i;
1.238 schwarze 1875: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 1876: TOKEN_NONE)
1.277 schwarze 1877: return ROFF_RERUN;
1878: return ROFF_IGN;
1.79 kristaps 1879: }
1880: }
1881:
1882: /*
1883: * If we have no custom end-query or lookup failed, then try
1884: * pulling it out of the hashtable.
1885: */
1886:
1.238 schwarze 1887: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1888:
1.238 schwarze 1889: if (t != ROFF_cblock) {
1890: if (tok != ROFF_ig)
1891: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1892: return ROFF_IGN;
1.106 kristaps 1893: }
1.79 kristaps 1894:
1.277 schwarze 1895: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1896: }
1897:
1898: static enum rofferr
1.80 kristaps 1899: roff_block_text(ROFF_ARGS)
1.78 kristaps 1900: {
1901:
1.238 schwarze 1902: if (tok != ROFF_ig)
1903: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1904:
1.277 schwarze 1905: return ROFF_IGN;
1.78 kristaps 1906: }
1907:
1908: static enum rofferr
1.82 kristaps 1909: roff_cond_sub(ROFF_ARGS)
1910: {
1.294 schwarze 1911: enum roff_tok t;
1.139 kristaps 1912: char *ep;
1.198 schwarze 1913: int rr;
1.82 kristaps 1914:
1915: rr = r->last->rule;
1.139 kristaps 1916: roffnode_cleanscope(r);
1.144 kristaps 1917:
1.196 schwarze 1918: /*
1919: * If `\}' occurs on a macro line without a preceding macro,
1920: * drop the line completely.
1921: */
1922:
1.238 schwarze 1923: ep = buf->buf + pos;
1924: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1925: rr = 0;
1.196 schwarze 1926:
1.177 schwarze 1927: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1928:
1.238 schwarze 1929: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 1930: switch (ep[1]) {
1931: case '}':
1932: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1933: roff_ccond(r, ln, ep - buf->buf);
1934: break;
1935: case '\0':
1936: ++ep;
1937: break;
1938: default:
1939: ep += 2;
1940: break;
1.197 schwarze 1941: }
1.177 schwarze 1942: }
1.318 schwarze 1943:
1944: /*
1945: * Fully handle known macros when they are structurally
1946: * required or when the conditional evaluated to true.
1947: */
1948:
1949: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1950: return t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT)
1951: ? (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) : rr
1952: ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 1953: }
1954:
1955: static enum rofferr
1956: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1957: {
1.140 kristaps 1958: char *ep;
1.198 schwarze 1959: int rr;
1.82 kristaps 1960:
1961: rr = r->last->rule;
1.140 kristaps 1962: roffnode_cleanscope(r);
1.82 kristaps 1963:
1.238 schwarze 1964: ep = buf->buf + pos;
1965: while ((ep = strchr(ep, '\\')) != NULL) {
1966: if (*(++ep) == '}') {
1.197 schwarze 1967: *ep = '&';
1.238 schwarze 1968: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1969: }
1.247 schwarze 1970: if (*ep != '\0')
1971: ++ep;
1.78 kristaps 1972: }
1.277 schwarze 1973: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 1974: }
1975:
1.266 schwarze 1976: /* --- handling of numeric and conditional expressions -------------------- */
1977:
1.204 schwarze 1978: /*
1979: * Parse a single signed integer number. Stop at the first non-digit.
1980: * If there is at least one digit, return success and advance the
1981: * parse point, else return failure and let the parse point unchanged.
1982: * Ignore overflows, treat them just like the C language.
1983: */
1.184 schwarze 1984: static int
1.261 schwarze 1985: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 1986: {
1.261 schwarze 1987: int myres, scaled, n, p;
1.206 schwarze 1988:
1989: if (NULL == res)
1990: res = &myres;
1.184 schwarze 1991:
1992: p = *pos;
1993: n = v[p] == '-';
1.261 schwarze 1994: if (n || v[p] == '+')
1.184 schwarze 1995: p++;
1996:
1.261 schwarze 1997: if (flags & ROFFNUM_WHITE)
1998: while (isspace((unsigned char)v[p]))
1999: p++;
2000:
1.184 schwarze 2001: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2002: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2003: if (p == *pos + n)
2004: return 0;
2005:
2006: if (n)
2007: *res = -*res;
2008:
1.254 schwarze 2009: /* Each number may be followed by one optional scaling unit. */
2010:
2011: switch (v[p]) {
2012: case 'f':
1.261 schwarze 2013: scaled = *res * 65536;
1.254 schwarze 2014: break;
2015: case 'i':
1.261 schwarze 2016: scaled = *res * 240;
1.254 schwarze 2017: break;
2018: case 'c':
1.261 schwarze 2019: scaled = *res * 240 / 2.54;
1.254 schwarze 2020: break;
2021: case 'v':
2022: case 'P':
1.261 schwarze 2023: scaled = *res * 40;
1.254 schwarze 2024: break;
2025: case 'm':
2026: case 'n':
1.261 schwarze 2027: scaled = *res * 24;
1.254 schwarze 2028: break;
2029: case 'p':
1.261 schwarze 2030: scaled = *res * 10 / 3;
1.254 schwarze 2031: break;
2032: case 'u':
1.261 schwarze 2033: scaled = *res;
1.254 schwarze 2034: break;
2035: case 'M':
1.261 schwarze 2036: scaled = *res * 6 / 25;
1.254 schwarze 2037: break;
2038: default:
1.261 schwarze 2039: scaled = *res;
1.254 schwarze 2040: p--;
2041: break;
2042: }
1.261 schwarze 2043: if (flags & ROFFNUM_SCALE)
2044: *res = scaled;
1.254 schwarze 2045:
2046: *pos = p + 1;
1.277 schwarze 2047: return 1;
1.184 schwarze 2048: }
2049:
1.198 schwarze 2050: /*
2051: * Evaluate a string comparison condition.
2052: * The first character is the delimiter.
2053: * Succeed if the string up to its second occurrence
2054: * matches the string up to its third occurence.
2055: * Advance the cursor after the third occurrence
2056: * or lacking that, to the end of the line.
2057: */
2058: static int
2059: roff_evalstrcond(const char *v, int *pos)
2060: {
2061: const char *s1, *s2, *s3;
2062: int match;
2063:
2064: match = 0;
2065: s1 = v + *pos; /* initial delimiter */
2066: s2 = s1 + 1; /* for scanning the first string */
2067: s3 = strchr(s2, *s1); /* for scanning the second string */
2068:
2069: if (NULL == s3) /* found no middle delimiter */
2070: goto out;
2071:
2072: while ('\0' != *++s3) {
2073: if (*s2 != *s3) { /* mismatch */
2074: s3 = strchr(s3, *s1);
2075: break;
2076: }
2077: if (*s3 == *s1) { /* found the final delimiter */
2078: match = 1;
2079: break;
2080: }
2081: s2++;
2082: }
2083:
2084: out:
2085: if (NULL == s3)
2086: s3 = strchr(s2, '\0');
1.242 schwarze 2087: else if (*s3 != '\0')
1.198 schwarze 2088: s3++;
2089: *pos = s3 - v;
1.277 schwarze 2090: return match;
1.198 schwarze 2091: }
2092:
1.204 schwarze 2093: /*
2094: * Evaluate an optionally negated single character, numerical,
2095: * or string condition.
2096: */
1.198 schwarze 2097: static int
1.271 schwarze 2098: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2099: {
1.271 schwarze 2100: char *cp, *name;
2101: size_t sz;
1.315 schwarze 2102: int deftype, number, savepos, istrue, wanttrue;
1.88 kristaps 2103:
1.198 schwarze 2104: if ('!' == v[*pos]) {
2105: wanttrue = 0;
2106: (*pos)++;
2107: } else
2108: wanttrue = 1;
2109:
1.88 kristaps 2110: switch (v[*pos]) {
1.240 schwarze 2111: case '\0':
1.277 schwarze 2112: return 0;
1.207 schwarze 2113: case 'n':
2114: case 'o':
1.88 kristaps 2115: (*pos)++;
1.277 schwarze 2116: return wanttrue;
1.207 schwarze 2117: case 'c':
2118: case 'e':
2119: case 't':
1.239 schwarze 2120: case 'v':
1.88 kristaps 2121: (*pos)++;
1.277 schwarze 2122: return !wanttrue;
1.310 schwarze 2123: case 'd':
1.271 schwarze 2124: case 'r':
1.310 schwarze 2125: cp = v + *pos + 1;
2126: while (*cp == ' ')
2127: cp++;
2128: name = cp;
2129: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2130: if (sz == 0)
2131: istrue = 0;
2132: else if (v[*pos] == 'r')
2133: istrue = roff_hasregn(r, name, sz);
2134: else {
2135: deftype = ROFFDEF_ANY;
2136: roff_getstrn(r, name, sz, &deftype);
2137: istrue = !!deftype;
2138: }
1.271 schwarze 2139: *pos = cp - v;
1.310 schwarze 2140: return istrue == wanttrue;
1.88 kristaps 2141: default:
2142: break;
2143: }
2144:
1.241 schwarze 2145: savepos = *pos;
1.261 schwarze 2146: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2147: return (number > 0) == wanttrue;
1.241 schwarze 2148: else if (*pos == savepos)
1.277 schwarze 2149: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2150: else
1.277 schwarze 2151: return 0;
1.88 kristaps 2152: }
2153:
1.74 kristaps 2154: static enum rofferr
1.103 kristaps 2155: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2156: {
1.123 schwarze 2157:
1.277 schwarze 2158: return ROFF_IGN;
1.89 kristaps 2159: }
2160:
1.104 kristaps 2161: static enum rofferr
1.251 schwarze 2162: roff_insec(ROFF_ARGS)
2163: {
2164:
2165: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2166: ln, ppos, roff_name[tok]);
1.277 schwarze 2167: return ROFF_IGN;
1.251 schwarze 2168: }
2169:
2170: static enum rofferr
2171: roff_unsupp(ROFF_ARGS)
2172: {
2173:
2174: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2175: ln, ppos, roff_name[tok]);
1.277 schwarze 2176: return ROFF_IGN;
1.251 schwarze 2177: }
2178:
2179: static enum rofferr
1.82 kristaps 2180: roff_cond(ROFF_ARGS)
1.74 kristaps 2181: {
1.173 schwarze 2182:
2183: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2184:
1.207 schwarze 2185: /*
1.134 kristaps 2186: * An `.el' has no conditional body: it will consume the value
2187: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2188: * defaults to DENY.
1.134 kristaps 2189: *
2190: * If we're not an `el', however, then evaluate the conditional.
2191: */
1.133 kristaps 2192:
1.238 schwarze 2193: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2194: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2195: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2196:
1.134 kristaps 2197: /*
2198: * An if-else will put the NEGATION of the current evaluated
2199: * conditional into the stack of rules.
2200: */
2201:
1.238 schwarze 2202: if (tok == ROFF_ie) {
1.223 schwarze 2203: if (r->rstackpos + 1 == r->rstacksz) {
2204: r->rstacksz += 16;
2205: r->rstack = mandoc_reallocarray(r->rstack,
2206: r->rstacksz, sizeof(int));
1.134 kristaps 2207: }
1.198 schwarze 2208: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2209: }
1.88 kristaps 2210:
2211: /* If the parent has false as its rule, then so do we. */
2212:
1.198 schwarze 2213: if (r->last->parent && !r->last->parent->rule)
2214: r->last->rule = 0;
1.88 kristaps 2215:
2216: /*
1.173 schwarze 2217: * Determine scope.
2218: * If there is nothing on the line after the conditional,
2219: * not even whitespace, use next-line scope.
1.88 kristaps 2220: */
1.74 kristaps 2221:
1.238 schwarze 2222: if (buf->buf[pos] == '\0') {
1.173 schwarze 2223: r->last->endspan = 2;
2224: goto out;
2225: }
2226:
1.238 schwarze 2227: while (buf->buf[pos] == ' ')
1.173 schwarze 2228: pos++;
2229:
2230: /* An opening brace requests multiline scope. */
1.75 kristaps 2231:
1.238 schwarze 2232: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2233: r->last->endspan = -1;
2234: pos += 2;
1.272 schwarze 2235: while (buf->buf[pos] == ' ')
2236: pos++;
1.173 schwarze 2237: goto out;
1.207 schwarze 2238: }
1.74 kristaps 2239:
1.77 kristaps 2240: /*
1.173 schwarze 2241: * Anything else following the conditional causes
2242: * single-line scope. Warn if the scope contains
2243: * nothing but trailing whitespace.
1.77 kristaps 2244: */
2245:
1.238 schwarze 2246: if (buf->buf[pos] == '\0')
1.216 schwarze 2247: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2248: ln, ppos, roff_name[tok]);
1.77 kristaps 2249:
1.173 schwarze 2250: r->last->endspan = 1;
1.74 kristaps 2251:
1.173 schwarze 2252: out:
1.75 kristaps 2253: *offs = pos;
1.277 schwarze 2254: return ROFF_RERUN;
1.83 schwarze 2255: }
2256:
2257: static enum rofferr
1.92 schwarze 2258: roff_ds(ROFF_ARGS)
2259: {
1.212 schwarze 2260: char *string;
2261: const char *name;
2262: size_t namesz;
1.96 kristaps 2263:
1.251 schwarze 2264: /* Ignore groff compatibility mode for now. */
2265:
2266: if (tok == ROFF_ds1)
2267: tok = ROFF_ds;
2268: else if (tok == ROFF_as1)
2269: tok = ROFF_as;
2270:
1.96 kristaps 2271: /*
1.212 schwarze 2272: * The first word is the name of the string.
2273: * If it is empty or terminated by an escape sequence,
2274: * abort the `ds' request without defining anything.
1.96 kristaps 2275: */
1.92 schwarze 2276:
1.238 schwarze 2277: name = string = buf->buf + pos;
2278: if (*name == '\0')
1.277 schwarze 2279: return ROFF_IGN;
1.92 schwarze 2280:
1.212 schwarze 2281: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2282: if (name[namesz] == '\\')
1.277 schwarze 2283: return ROFF_IGN;
1.212 schwarze 2284:
2285: /* Read past the initial double-quote, if any. */
1.238 schwarze 2286: if (*string == '"')
1.92 schwarze 2287: string++;
2288:
1.96 kristaps 2289: /* The rest is the value. */
1.212 schwarze 2290: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2291: ROFF_as == tok);
1.311 schwarze 2292: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2293: return ROFF_IGN;
1.92 schwarze 2294: }
2295:
1.204 schwarze 2296: /*
2297: * Parse a single operator, one or two characters long.
2298: * If the operator is recognized, return success and advance the
2299: * parse point, else return failure and let the parse point unchanged.
2300: */
2301: static int
2302: roff_getop(const char *v, int *pos, char *res)
2303: {
2304:
2305: *res = v[*pos];
2306:
2307: switch (*res) {
1.207 schwarze 2308: case '+':
2309: case '-':
2310: case '*':
2311: case '/':
2312: case '%':
2313: case '&':
2314: case ':':
1.204 schwarze 2315: break;
2316: case '<':
2317: switch (v[*pos + 1]) {
1.207 schwarze 2318: case '=':
1.204 schwarze 2319: *res = 'l';
2320: (*pos)++;
2321: break;
1.207 schwarze 2322: case '>':
1.204 schwarze 2323: *res = '!';
2324: (*pos)++;
2325: break;
1.207 schwarze 2326: case '?':
1.204 schwarze 2327: *res = 'i';
2328: (*pos)++;
2329: break;
2330: default:
2331: break;
2332: }
2333: break;
2334: case '>':
2335: switch (v[*pos + 1]) {
1.207 schwarze 2336: case '=':
1.204 schwarze 2337: *res = 'g';
2338: (*pos)++;
2339: break;
1.207 schwarze 2340: case '?':
1.204 schwarze 2341: *res = 'a';
2342: (*pos)++;
2343: break;
2344: default:
2345: break;
2346: }
2347: break;
2348: case '=':
2349: if ('=' == v[*pos + 1])
2350: (*pos)++;
2351: break;
2352: default:
1.277 schwarze 2353: return 0;
1.204 schwarze 2354: }
2355: (*pos)++;
2356:
1.277 schwarze 2357: return *res;
1.204 schwarze 2358: }
2359:
2360: /*
2361: * Evaluate either a parenthesized numeric expression
2362: * or a single signed integer number.
2363: */
2364: static int
1.235 schwarze 2365: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2366: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2367: {
2368:
2369: if ('(' != v[*pos])
1.277 schwarze 2370: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2371:
2372: (*pos)++;
1.261 schwarze 2373: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2374: return 0;
1.204 schwarze 2375:
1.206 schwarze 2376: /*
2377: * Omission of the closing parenthesis
2378: * is an error in validation mode,
2379: * but ignored in evaluation mode.
2380: */
2381:
1.204 schwarze 2382: if (')' == v[*pos])
2383: (*pos)++;
1.206 schwarze 2384: else if (NULL == res)
1.277 schwarze 2385: return 0;
1.204 schwarze 2386:
1.277 schwarze 2387: return 1;
1.204 schwarze 2388: }
2389:
2390: /*
2391: * Evaluate a complete numeric expression.
2392: * Proceed left to right, there is no concept of precedence.
2393: */
2394: static int
1.235 schwarze 2395: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2396: int *pos, int *res, int flags)
1.204 schwarze 2397: {
2398: int mypos, operand2;
2399: char operator;
2400:
2401: if (NULL == pos) {
2402: mypos = 0;
2403: pos = &mypos;
2404: }
2405:
1.261 schwarze 2406: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2407: while (isspace((unsigned char)v[*pos]))
2408: (*pos)++;
2409:
1.261 schwarze 2410: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2411: return 0;
1.204 schwarze 2412:
2413: while (1) {
1.261 schwarze 2414: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2415: while (isspace((unsigned char)v[*pos]))
2416: (*pos)++;
2417:
2418: if ( ! roff_getop(v, pos, &operator))
2419: break;
2420:
1.261 schwarze 2421: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2422: while (isspace((unsigned char)v[*pos]))
2423: (*pos)++;
2424:
1.261 schwarze 2425: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2426: return 0;
1.204 schwarze 2427:
1.261 schwarze 2428: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2429: while (isspace((unsigned char)v[*pos]))
2430: (*pos)++;
1.206 schwarze 2431:
2432: if (NULL == res)
2433: continue;
1.204 schwarze 2434:
2435: switch (operator) {
1.207 schwarze 2436: case '+':
1.204 schwarze 2437: *res += operand2;
2438: break;
1.207 schwarze 2439: case '-':
1.204 schwarze 2440: *res -= operand2;
2441: break;
1.207 schwarze 2442: case '*':
1.204 schwarze 2443: *res *= operand2;
2444: break;
1.207 schwarze 2445: case '/':
1.244 schwarze 2446: if (operand2 == 0) {
1.235 schwarze 2447: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2448: r->parse, ln, *pos, v);
2449: *res = 0;
2450: break;
2451: }
1.204 schwarze 2452: *res /= operand2;
2453: break;
1.207 schwarze 2454: case '%':
1.244 schwarze 2455: if (operand2 == 0) {
2456: mandoc_msg(MANDOCERR_DIVZERO,
2457: r->parse, ln, *pos, v);
2458: *res = 0;
2459: break;
2460: }
1.204 schwarze 2461: *res %= operand2;
2462: break;
1.207 schwarze 2463: case '<':
1.204 schwarze 2464: *res = *res < operand2;
2465: break;
1.207 schwarze 2466: case '>':
1.204 schwarze 2467: *res = *res > operand2;
2468: break;
1.207 schwarze 2469: case 'l':
1.204 schwarze 2470: *res = *res <= operand2;
2471: break;
1.207 schwarze 2472: case 'g':
1.204 schwarze 2473: *res = *res >= operand2;
2474: break;
1.207 schwarze 2475: case '=':
1.204 schwarze 2476: *res = *res == operand2;
2477: break;
1.207 schwarze 2478: case '!':
1.204 schwarze 2479: *res = *res != operand2;
2480: break;
1.207 schwarze 2481: case '&':
1.204 schwarze 2482: *res = *res && operand2;
2483: break;
1.207 schwarze 2484: case ':':
1.204 schwarze 2485: *res = *res || operand2;
2486: break;
1.207 schwarze 2487: case 'i':
1.204 schwarze 2488: if (operand2 < *res)
2489: *res = operand2;
2490: break;
1.207 schwarze 2491: case 'a':
1.204 schwarze 2492: if (operand2 > *res)
2493: *res = operand2;
2494: break;
2495: default:
2496: abort();
2497: }
2498: }
1.277 schwarze 2499: return 1;
1.204 schwarze 2500: }
2501:
1.266 schwarze 2502: /* --- register management ------------------------------------------------ */
2503:
1.180 schwarze 2504: void
1.187 schwarze 2505: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2506: {
1.180 schwarze 2507: struct roffreg *reg;
2508:
2509: /* Search for an existing register with the same name. */
2510: reg = r->regtab;
2511:
2512: while (reg && strcmp(name, reg->key.p))
2513: reg = reg->next;
1.147 kristaps 2514:
1.180 schwarze 2515: if (NULL == reg) {
2516: /* Create a new register. */
2517: reg = mandoc_malloc(sizeof(struct roffreg));
2518: reg->key.p = mandoc_strdup(name);
2519: reg->key.sz = strlen(name);
1.187 schwarze 2520: reg->val = 0;
1.180 schwarze 2521: reg->next = r->regtab;
2522: r->regtab = reg;
2523: }
2524:
1.187 schwarze 2525: if ('+' == sign)
2526: reg->val += val;
2527: else if ('-' == sign)
2528: reg->val -= val;
2529: else
2530: reg->val = val;
1.147 kristaps 2531: }
2532:
1.192 schwarze 2533: /*
2534: * Handle some predefined read-only number registers.
2535: * For now, return -1 if the requested register is not predefined;
2536: * in case a predefined read-only register having the value -1
2537: * were to turn up, another special value would have to be chosen.
2538: */
2539: static int
1.273 schwarze 2540: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2541: {
2542:
2543: switch (*name) {
1.273 schwarze 2544: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2545: return r->argc;
1.207 schwarze 2546: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2547: return 0;
1.207 schwarze 2548: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2549: return 1;
1.207 schwarze 2550: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2551: return 24;
1.207 schwarze 2552: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2553: return 0;
1.207 schwarze 2554: case 'T': /* Some output device is always defined. */
1.277 schwarze 2555: return 1;
1.207 schwarze 2556: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2557: return 40;
1.192 schwarze 2558: default:
1.277 schwarze 2559: return -1;
1.192 schwarze 2560: }
2561: }
2562:
1.181 schwarze 2563: int
1.180 schwarze 2564: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2565: {
1.180 schwarze 2566: struct roffreg *reg;
1.192 schwarze 2567: int val;
2568:
2569: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2570: val = roff_getregro(r, name + 1);
1.192 schwarze 2571: if (-1 != val)
1.277 schwarze 2572: return val;
1.192 schwarze 2573: }
1.180 schwarze 2574:
2575: for (reg = r->regtab; reg; reg = reg->next)
2576: if (0 == strcmp(name, reg->key.p))
1.277 schwarze 2577: return reg->val;
1.181 schwarze 2578:
1.277 schwarze 2579: return 0;
1.181 schwarze 2580: }
2581:
2582: static int
2583: roff_getregn(const struct roff *r, const char *name, size_t len)
2584: {
2585: struct roffreg *reg;
1.192 schwarze 2586: int val;
2587:
2588: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2589: val = roff_getregro(r, name + 1);
1.192 schwarze 2590: if (-1 != val)
1.277 schwarze 2591: return val;
1.192 schwarze 2592: }
1.181 schwarze 2593:
2594: for (reg = r->regtab; reg; reg = reg->next)
2595: if (len == reg->key.sz &&
2596: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2597: return reg->val;
1.271 schwarze 2598:
1.277 schwarze 2599: return 0;
1.271 schwarze 2600: }
2601:
2602: static int
2603: roff_hasregn(const struct roff *r, const char *name, size_t len)
2604: {
2605: struct roffreg *reg;
2606: int val;
2607:
2608: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2609: val = roff_getregro(r, name + 1);
1.271 schwarze 2610: if (-1 != val)
1.277 schwarze 2611: return 1;
1.271 schwarze 2612: }
2613:
2614: for (reg = r->regtab; reg; reg = reg->next)
2615: if (len == reg->key.sz &&
2616: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2617: return 1;
1.147 kristaps 2618:
1.277 schwarze 2619: return 0;
1.147 kristaps 2620: }
2621:
1.180 schwarze 2622: static void
2623: roff_freereg(struct roffreg *reg)
1.147 kristaps 2624: {
1.180 schwarze 2625: struct roffreg *old_reg;
1.147 kristaps 2626:
1.180 schwarze 2627: while (NULL != reg) {
2628: free(reg->key.p);
2629: old_reg = reg;
2630: reg = reg->next;
2631: free(old_reg);
2632: }
1.147 kristaps 2633: }
1.92 schwarze 2634:
2635: static enum rofferr
1.89 kristaps 2636: roff_nr(ROFF_ARGS)
1.83 schwarze 2637: {
1.212 schwarze 2638: char *key, *val;
2639: size_t keysz;
1.138 kristaps 2640: int iv;
1.187 schwarze 2641: char sign;
1.89 kristaps 2642:
1.238 schwarze 2643: key = val = buf->buf + pos;
2644: if (*key == '\0')
1.277 schwarze 2645: return ROFF_IGN;
1.212 schwarze 2646:
2647: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2648: if (key[keysz] == '\\')
1.277 schwarze 2649: return ROFF_IGN;
1.212 schwarze 2650: key[keysz] = '\0';
1.89 kristaps 2651:
1.187 schwarze 2652: sign = *val;
1.238 schwarze 2653: if (sign == '+' || sign == '-')
1.187 schwarze 2654: val++;
2655:
1.261 schwarze 2656: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2657: roff_setreg(r, key, iv, sign);
1.109 kristaps 2658:
1.277 schwarze 2659: return ROFF_IGN;
1.203 schwarze 2660: }
2661:
2662: static enum rofferr
2663: roff_rr(ROFF_ARGS)
2664: {
2665: struct roffreg *reg, **prev;
1.212 schwarze 2666: char *name, *cp;
2667: size_t namesz;
1.203 schwarze 2668:
1.238 schwarze 2669: name = cp = buf->buf + pos;
2670: if (*name == '\0')
1.277 schwarze 2671: return ROFF_IGN;
1.212 schwarze 2672: namesz = roff_getname(r, &cp, ln, pos);
2673: name[namesz] = '\0';
1.203 schwarze 2674:
2675: prev = &r->regtab;
2676: while (1) {
2677: reg = *prev;
1.238 schwarze 2678: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2679: break;
2680: prev = ®->next;
2681: }
1.238 schwarze 2682: if (reg != NULL) {
1.203 schwarze 2683: *prev = reg->next;
2684: free(reg->key.p);
2685: free(reg);
2686: }
1.277 schwarze 2687: return ROFF_IGN;
1.122 schwarze 2688: }
2689:
1.266 schwarze 2690: /* --- handler functions for roff requests -------------------------------- */
2691:
1.122 schwarze 2692: static enum rofferr
2693: roff_rm(ROFF_ARGS)
2694: {
2695: const char *name;
2696: char *cp;
1.212 schwarze 2697: size_t namesz;
1.122 schwarze 2698:
1.238 schwarze 2699: cp = buf->buf + pos;
2700: while (*cp != '\0') {
1.212 schwarze 2701: name = cp;
1.238 schwarze 2702: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2703: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 2704: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 2705: if (name[namesz] == '\\')
1.212 schwarze 2706: break;
1.122 schwarze 2707: }
1.277 schwarze 2708: return ROFF_IGN;
1.178 schwarze 2709: }
2710:
2711: static enum rofferr
2712: roff_it(ROFF_ARGS)
2713: {
2714: int iv;
2715:
2716: /* Parse the number of lines. */
1.261 schwarze 2717:
2718: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2719: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2720: ln, ppos, buf->buf + 1);
1.277 schwarze 2721: return ROFF_IGN;
1.178 schwarze 2722: }
2723:
1.262 schwarze 2724: while (isspace((unsigned char)buf->buf[pos]))
2725: pos++;
2726:
2727: /*
2728: * Arm the input line trap.
2729: * Special-casing "an-trap" is an ugly workaround to cope
2730: * with DocBook stupidly fiddling with man(7) internals.
2731: */
1.261 schwarze 2732:
1.178 schwarze 2733: roffit_lines = iv;
1.262 schwarze 2734: roffit_macro = mandoc_strdup(iv != 1 ||
2735: strcmp(buf->buf + pos, "an-trap") ?
2736: buf->buf + pos : "br");
1.277 schwarze 2737: return ROFF_IGN;
1.175 schwarze 2738: }
2739:
2740: static enum rofferr
2741: roff_Dd(ROFF_ARGS)
2742: {
1.315 schwarze 2743: int mask;
2744: enum roff_tok t, te;
1.227 schwarze 2745:
1.315 schwarze 2746: switch (tok) {
2747: case ROFF_Dd:
2748: tok = MDOC_Dd;
2749: te = MDOC_MAX;
2750: if (r->format == 0)
2751: r->format = MPARSE_MDOC;
2752: mask = MPARSE_MDOC | MPARSE_QUICK;
2753: break;
2754: case ROFF_TH:
2755: tok = MAN_TH;
2756: te = MAN_MAX;
2757: if (r->format == 0)
2758: r->format = MPARSE_MAN;
2759: mask = MPARSE_QUICK;
2760: break;
2761: default:
2762: abort();
2763: }
2764: if ((r->options & mask) == 0)
2765: for (t = tok; t < te; t++)
2766: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 2767: return ROFF_CONT;
1.109 kristaps 2768: }
2769:
2770: static enum rofferr
2771: roff_TE(ROFF_ARGS)
2772: {
2773:
2774: if (NULL == r->tbl)
1.221 schwarze 2775: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2776: ln, ppos, "TE");
1.258 schwarze 2777: else if ( ! tbl_end(&r->tbl)) {
2778: free(buf->buf);
2779: buf->buf = mandoc_strdup(".sp");
2780: buf->sz = 4;
1.277 schwarze 2781: return ROFF_REPARSE;
1.258 schwarze 2782: }
1.277 schwarze 2783: return ROFF_IGN;
1.112 kristaps 2784: }
2785:
2786: static enum rofferr
2787: roff_T_(ROFF_ARGS)
2788: {
2789:
2790: if (NULL == r->tbl)
1.221 schwarze 2791: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2792: ln, ppos, "T&");
1.112 kristaps 2793: else
1.296 schwarze 2794: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 2795:
1.277 schwarze 2796: return ROFF_IGN;
1.109 kristaps 2797: }
2798:
1.230 schwarze 2799: /*
2800: * Handle in-line equation delimiters.
2801: */
2802: static enum rofferr
1.238 schwarze 2803: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2804: {
1.233 schwarze 2805: char *cp1, *cp2;
2806: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2807:
1.230 schwarze 2808: /*
2809: * Outside equations, look for an opening delimiter.
2810: * If we are inside an equation, we already know it is
2811: * in-line, or this function wouldn't have been called;
2812: * so look for a closing delimiter.
2813: */
2814:
1.238 schwarze 2815: cp1 = buf->buf + pos;
1.230 schwarze 2816: cp2 = strchr(cp1, r->eqn == NULL ?
2817: r->last_eqn->odelim : r->last_eqn->cdelim);
2818: if (cp2 == NULL)
1.277 schwarze 2819: return ROFF_CONT;
1.230 schwarze 2820:
1.233 schwarze 2821: *cp2++ = '\0';
2822: bef_pr = bef_nl = aft_nl = aft_pr = "";
2823:
2824: /* Handle preceding text, protecting whitespace. */
2825:
1.238 schwarze 2826: if (*buf->buf != '\0') {
1.233 schwarze 2827: if (r->eqn == NULL)
2828: bef_pr = "\\&";
2829: bef_nl = "\n";
2830: }
2831:
2832: /*
2833: * Prepare replacing the delimiter with an equation macro
2834: * and drop leading white space from the equation.
2835: */
1.230 schwarze 2836:
1.233 schwarze 2837: if (r->eqn == NULL) {
2838: while (*cp2 == ' ')
2839: cp2++;
2840: mac = ".EQ";
2841: } else
2842: mac = ".EN";
2843:
2844: /* Handle following text, protecting whitespace. */
2845:
2846: if (*cp2 != '\0') {
2847: aft_nl = "\n";
2848: if (r->eqn != NULL)
2849: aft_pr = "\\&";
2850: }
2851:
2852: /* Do the actual replacement. */
2853:
1.238 schwarze 2854: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2855: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2856: free(buf->buf);
2857: buf->buf = cp1;
1.230 schwarze 2858:
2859: /* Toggle the in-line state of the eqn subsystem. */
2860:
2861: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2862: return ROFF_REPARSE;
1.151 kristaps 2863: }
2864:
1.235 schwarze 2865: static enum rofferr
2866: roff_EQ(ROFF_ARGS)
1.125 kristaps 2867: {
1.319 ! schwarze 2868: struct roff_node *n;
! 2869:
! 2870: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
! 2871: if (ln > r->man->last->line)
! 2872: n->flags |= NODE_LINE;
! 2873: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
! 2874: n->eqn->expectargs = UINT_MAX;
! 2875: roff_node_append(r->man, n);
! 2876: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 2877:
1.238 schwarze 2878: assert(r->eqn == NULL);
1.319 ! schwarze 2879: if (r->last_eqn == NULL)
! 2880: r->last_eqn = eqn_alloc(r->parse);
! 2881: else
! 2882: eqn_reset(r->last_eqn);
! 2883: r->eqn = r->last_eqn;
! 2884: r->eqn->node = n;
1.151 kristaps 2885:
1.238 schwarze 2886: if (buf->buf[pos] != '\0')
1.235 schwarze 2887: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2888: ".EQ %s", buf->buf + pos);
1.151 kristaps 2889:
1.277 schwarze 2890: return ROFF_IGN;
1.125 kristaps 2891: }
2892:
2893: static enum rofferr
2894: roff_EN(ROFF_ARGS)
2895: {
1.319 ! schwarze 2896: if (r->eqn != NULL) {
! 2897: eqn_parse(r->eqn);
! 2898: r->eqn = NULL;
! 2899: } else
! 2900: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
! 2901: if (buf->buf[pos] != '\0')
! 2902: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
! 2903: "EN %s", buf->buf + pos);
1.277 schwarze 2904: return ROFF_IGN;
1.125 kristaps 2905: }
2906:
2907: static enum rofferr
1.109 kristaps 2908: roff_TS(ROFF_ARGS)
2909: {
1.176 schwarze 2910: struct tbl_node *tbl;
1.89 kristaps 2911:
1.115 kristaps 2912: if (r->tbl) {
1.221 schwarze 2913: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2914: ln, ppos, "TS breaks TS");
1.151 kristaps 2915: tbl_end(&r->tbl);
1.115 kristaps 2916: }
1.83 schwarze 2917:
1.176 schwarze 2918: tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2919:
2920: if (r->last_tbl)
1.176 schwarze 2921: r->last_tbl->next = tbl;
1.113 kristaps 2922: else
1.176 schwarze 2923: r->first_tbl = r->last_tbl = tbl;
1.113 kristaps 2924:
1.176 schwarze 2925: r->tbl = r->last_tbl = tbl;
1.297 schwarze 2926: return ROFF_IGN;
2927: }
2928:
2929: static enum rofferr
2930: roff_onearg(ROFF_ARGS)
2931: {
2932: struct roff_node *n;
2933: char *cp;
1.305 schwarze 2934: int npos;
1.297 schwarze 2935:
1.302 schwarze 2936: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
2937: (tok == ROFF_sp || tok == ROFF_ti))
2938: man_breakscope(r->man, tok);
2939:
1.309 schwarze 2940: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 2941: r->man->last = roffce_node;
2942: r->man->next = ROFF_NEXT_SIBLING;
2943: }
2944:
1.297 schwarze 2945: roff_elem_alloc(r->man, ln, ppos, tok);
2946: n = r->man->last;
2947:
2948: cp = buf->buf + pos;
2949: if (*cp != '\0') {
2950: while (*cp != '\0' && *cp != ' ')
2951: cp++;
2952: while (*cp == ' ')
2953: *cp++ = '\0';
2954: if (*cp != '\0')
2955: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2956: r->parse, ln, cp - buf->buf,
2957: "%s ... %s", roff_name[tok], cp);
2958: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 2959: }
2960:
1.309 schwarze 2961: if (tok == ROFF_ce || tok == ROFF_rj) {
2962: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 2963: roff_word_alloc(r->man, ln, pos, "1");
2964: r->man->last->flags |= NODE_NOSRC;
2965: }
2966: npos = 0;
2967: if (roff_evalnum(r, ln, r->man->last->string, &npos,
2968: &roffce_lines, 0) == 0) {
2969: mandoc_vmsg(MANDOCERR_CE_NONUM,
2970: r->parse, ln, pos, "ce %s", buf->buf + pos);
2971: roffce_lines = 1;
2972: }
2973: if (roffce_lines < 1) {
2974: r->man->last = r->man->last->parent;
2975: roffce_node = NULL;
2976: roffce_lines = 0;
2977: } else
2978: roffce_node = r->man->last->parent;
2979: } else {
2980: n->flags |= NODE_VALID | NODE_ENDED;
2981: r->man->last = n;
2982: }
2983: n->flags |= NODE_LINE;
1.300 schwarze 2984: r->man->next = ROFF_NEXT_SIBLING;
2985: return ROFF_IGN;
2986: }
2987:
2988: static enum rofferr
2989: roff_manyarg(ROFF_ARGS)
2990: {
2991: struct roff_node *n;
2992: char *sp, *ep;
2993:
2994: roff_elem_alloc(r->man, ln, ppos, tok);
2995: n = r->man->last;
2996:
2997: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
2998: while (*ep != '\0' && *ep != ' ')
2999: ep++;
3000: while (*ep == ' ')
3001: *ep++ = '\0';
3002: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3003: }
3004:
3005: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3006: r->man->last = n;
3007: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3008: return ROFF_IGN;
1.251 schwarze 3009: }
3010:
3011: static enum rofferr
1.311 schwarze 3012: roff_als(ROFF_ARGS)
3013: {
3014: char *oldn, *newn, *end, *value;
3015: size_t oldsz, newsz, valsz;
3016:
3017: newn = oldn = buf->buf + pos;
3018: if (*newn == '\0')
3019: return ROFF_IGN;
3020:
3021: newsz = roff_getname(r, &oldn, ln, pos);
3022: if (newn[newsz] == '\\' || *oldn == '\0')
3023: return ROFF_IGN;
3024:
3025: end = oldn;
3026: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3027: if (oldsz == 0)
3028: return ROFF_IGN;
3029:
1.315 schwarze 3030: valsz = mandoc_asprintf(&value, ".%.*s \\$*\\\"\n",
3031: (int)oldsz, oldn);
1.311 schwarze 3032: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3033: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3034: free(value);
3035: return ROFF_IGN;
3036: }
3037:
3038: static enum rofferr
1.296 schwarze 3039: roff_br(ROFF_ARGS)
1.251 schwarze 3040: {
1.302 schwarze 3041: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3042: man_breakscope(r->man, ROFF_br);
1.296 schwarze 3043: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3044: if (buf->buf[pos] != '\0')
3045: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3046: "%s %s", roff_name[tok], buf->buf + pos);
3047: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3048: r->man->next = ROFF_NEXT_SIBLING;
3049: return ROFF_IGN;
1.92 schwarze 3050: }
3051:
1.105 kristaps 3052: static enum rofferr
1.174 kristaps 3053: roff_cc(ROFF_ARGS)
3054: {
3055: const char *p;
3056:
1.238 schwarze 3057: p = buf->buf + pos;
1.174 kristaps 3058:
1.238 schwarze 3059: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3060: r->control = '\0';
1.174 kristaps 3061:
1.238 schwarze 3062: if (*p != '\0')
1.260 schwarze 3063: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3064: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3065:
1.277 schwarze 3066: return ROFF_IGN;
1.174 kristaps 3067: }
3068:
3069: static enum rofferr
1.303 schwarze 3070: roff_ec(ROFF_ARGS)
3071: {
3072: const char *p;
3073:
3074: p = buf->buf + pos;
3075: if (*p == '\0')
3076: r->escape = '\\';
3077: else {
3078: r->escape = *p;
3079: if (*++p != '\0')
3080: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3081: ln, p - buf->buf, "ec ... %s", p);
3082: }
3083: return ROFF_IGN;
3084: }
3085:
3086: static enum rofferr
3087: roff_eo(ROFF_ARGS)
3088: {
3089: r->escape = '\0';
3090: if (buf->buf[pos] != '\0')
3091: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3092: ln, pos, "eo %s", buf->buf + pos);
3093: return ROFF_IGN;
3094: }
3095:
3096: static enum rofferr
1.164 kristaps 3097: roff_tr(ROFF_ARGS)
3098: {
3099: const char *p, *first, *second;
3100: size_t fsz, ssz;
3101: enum mandoc_esc esc;
3102:
1.238 schwarze 3103: p = buf->buf + pos;
1.164 kristaps 3104:
1.238 schwarze 3105: if (*p == '\0') {
1.260 schwarze 3106: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 3107: return ROFF_IGN;
1.164 kristaps 3108: }
3109:
1.238 schwarze 3110: while (*p != '\0') {
1.164 kristaps 3111: fsz = ssz = 1;
3112:
3113: first = p++;
1.238 schwarze 3114: if (*first == '\\') {
1.164 kristaps 3115: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3116: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3117: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3118: ln, (int)(p - buf->buf), first);
1.277 schwarze 3119: return ROFF_IGN;
1.164 kristaps 3120: }
3121: fsz = (size_t)(p - first);
3122: }
3123:
3124: second = p++;
1.238 schwarze 3125: if (*second == '\\') {
1.164 kristaps 3126: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3127: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3128: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3129: ln, (int)(p - buf->buf), second);
1.277 schwarze 3130: return ROFF_IGN;
1.164 kristaps 3131: }
3132: ssz = (size_t)(p - second);
1.238 schwarze 3133: } else if (*second == '\0') {
1.260 schwarze 3134: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3135: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3136: second = " ";
1.165 kristaps 3137: p--;
1.164 kristaps 3138: }
3139:
1.167 kristaps 3140: if (fsz > 1) {
1.207 schwarze 3141: roff_setstrn(&r->xmbtab, first, fsz,
3142: second, ssz, 0);
1.167 kristaps 3143: continue;
3144: }
3145:
1.238 schwarze 3146: if (r->xtab == NULL)
1.207 schwarze 3147: r->xtab = mandoc_calloc(128,
3148: sizeof(struct roffstr));
1.167 kristaps 3149:
3150: free(r->xtab[(int)*first].p);
3151: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3152: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3153: }
3154:
1.277 schwarze 3155: return ROFF_IGN;
1.164 kristaps 3156: }
3157:
3158: static enum rofferr
1.306 schwarze 3159: roff_rn(ROFF_ARGS)
3160: {
3161: const char *value;
3162: char *oldn, *newn, *end;
3163: size_t oldsz, newsz;
1.315 schwarze 3164: int deftype;
1.306 schwarze 3165:
3166: oldn = newn = buf->buf + pos;
3167: if (*oldn == '\0')
3168: return ROFF_IGN;
3169:
3170: oldsz = roff_getname(r, &newn, ln, pos);
3171: if (oldn[oldsz] == '\\' || *newn == '\0')
3172: return ROFF_IGN;
3173:
3174: end = newn;
3175: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3176: if (newsz == 0)
3177: return ROFF_IGN;
3178:
1.315 schwarze 3179: deftype = ROFFDEF_ANY;
3180: value = roff_getstrn(r, oldn, oldsz, &deftype);
3181: switch (deftype) {
3182: case ROFFDEF_USER:
1.306 schwarze 3183: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3184: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3185: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3186: break;
3187: case ROFFDEF_PRE:
3188: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3189: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3190: break;
3191: case ROFFDEF_REN:
1.306 schwarze 3192: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3193: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3194: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3195: break;
3196: case ROFFDEF_STD:
1.306 schwarze 3197: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3198: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3199: break;
3200: default:
3201: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3202: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3203: break;
3204: }
1.306 schwarze 3205: return ROFF_IGN;
3206: }
3207:
3208: static enum rofferr
1.105 kristaps 3209: roff_so(ROFF_ARGS)
3210: {
1.249 schwarze 3211: char *name, *cp;
1.105 kristaps 3212:
1.238 schwarze 3213: name = buf->buf + pos;
1.224 schwarze 3214: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3215:
3216: /*
3217: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3218: * opening anything that's not in our cwd or anything beneath
3219: * it. Thus, explicitly disallow traversing up the file-system
3220: * or using absolute paths.
3221: */
3222:
1.238 schwarze 3223: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3224: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3225: ".so %s", name);
1.249 schwarze 3226: buf->sz = mandoc_asprintf(&cp,
3227: ".sp\nSee the file %s.\n.sp", name) + 1;
3228: free(buf->buf);
3229: buf->buf = cp;
3230: *offs = 0;
1.277 schwarze 3231: return ROFF_REPARSE;
1.105 kristaps 3232: }
3233:
3234: *offs = pos;
1.277 schwarze 3235: return ROFF_SO;
1.105 kristaps 3236: }
1.92 schwarze 3237:
1.266 schwarze 3238: /* --- user defined strings and macros ------------------------------------ */
3239:
1.106 kristaps 3240: static enum rofferr
3241: roff_userdef(ROFF_ARGS)
1.99 kristaps 3242: {
1.311 schwarze 3243: const char *arg[16], *ap;
1.106 kristaps 3244: char *cp, *n1, *n2;
1.292 schwarze 3245: int expand_count, i, ib, ie;
1.263 schwarze 3246: size_t asz, rsz;
1.106 kristaps 3247:
3248: /*
3249: * Collect pointers to macro argument strings
1.188 schwarze 3250: * and NUL-terminate them.
1.106 kristaps 3251: */
1.263 schwarze 3252:
1.273 schwarze 3253: r->argc = 0;
1.238 schwarze 3254: cp = buf->buf + pos;
1.311 schwarze 3255: for (i = 0; i < 16; i++) {
1.273 schwarze 3256: if (*cp == '\0')
3257: arg[i] = "";
3258: else {
3259: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3260: r->argc = i + 1;
3261: }
3262: }
1.99 kristaps 3263:
1.106 kristaps 3264: /*
3265: * Expand macro arguments.
1.99 kristaps 3266: */
1.263 schwarze 3267:
3268: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 3269: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 3270: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 3271: expand_count = 0;
1.263 schwarze 3272: while (*cp != '\0') {
3273:
3274: /* Scan ahead for the next argument invocation. */
3275:
3276: if (*cp++ != '\\')
3277: continue;
3278: if (*cp++ != '$')
3279: continue;
1.274 schwarze 3280: if (*cp == '*') { /* \\$* inserts all arguments */
3281: ib = 0;
3282: ie = r->argc - 1;
3283: } else { /* \\$1 .. \\$9 insert one argument */
3284: ib = ie = *cp - '1';
3285: if (ib < 0 || ib > 8)
3286: continue;
3287: }
1.263 schwarze 3288: cp -= 2;
1.292 schwarze 3289:
3290: /*
3291: * Prevent infinite recursion.
3292: */
3293:
3294: if (cp >= n2)
3295: expand_count = 1;
3296: else if (++expand_count > EXPAND_LIMIT) {
3297: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3298: ln, (int)(cp - n1), NULL);
1.293 schwarze 3299: free(buf->buf);
3300: buf->buf = n1;
1.292 schwarze 3301: return ROFF_IGN;
3302: }
1.263 schwarze 3303:
3304: /*
3305: * Determine the size of the expanded argument,
3306: * taking escaping of quotes into account.
3307: */
3308:
1.274 schwarze 3309: asz = ie > ib ? ie - ib : 0; /* for blanks */
3310: for (i = ib; i <= ie; i++) {
3311: for (ap = arg[i]; *ap != '\0'; ap++) {
3312: asz++;
3313: if (*ap == '"')
3314: asz += 3;
3315: }
1.263 schwarze 3316: }
3317: if (asz != 3) {
3318:
3319: /*
3320: * Determine the size of the rest of the
3321: * unexpanded macro, including the NUL.
3322: */
3323:
3324: rsz = buf->sz - (cp - n1) - 3;
3325:
3326: /*
3327: * When shrinking, move before
3328: * releasing the storage.
3329: */
3330:
3331: if (asz < 3)
3332: memmove(cp + asz, cp + 3, rsz);
3333:
3334: /*
3335: * Resize the storage for the macro
3336: * and readjust the parse pointer.
3337: */
3338:
3339: buf->sz += asz - 3;
3340: n2 = mandoc_realloc(n1, buf->sz);
3341: cp = n2 + (cp - n1);
3342: n1 = n2;
3343:
3344: /*
3345: * When growing, make room
3346: * for the expanded argument.
3347: */
3348:
3349: if (asz > 3)
3350: memmove(cp + asz, cp + 3, rsz);
3351: }
3352:
3353: /* Copy the expanded argument, escaping quotes. */
3354:
3355: n2 = cp;
1.274 schwarze 3356: for (i = ib; i <= ie; i++) {
3357: for (ap = arg[i]; *ap != '\0'; ap++) {
3358: if (*ap == '"') {
3359: memcpy(n2, "\\(dq", 4);
3360: n2 += 4;
3361: } else
3362: *n2++ = *ap;
3363: }
3364: if (i < ie)
3365: *n2++ = ' ';
1.106 kristaps 3366: }
1.99 kristaps 3367: }
3368:
1.106 kristaps 3369: /*
3370: * Replace the macro invocation
3371: * by the expanded macro.
3372: */
1.263 schwarze 3373:
1.238 schwarze 3374: free(buf->buf);
3375: buf->buf = n1;
1.248 schwarze 3376: *offs = 0;
1.106 kristaps 3377:
1.277 schwarze 3378: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3379: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3380: }
1.121 schwarze 3381:
1.306 schwarze 3382: /*
3383: * Calling a high-level macro that was renamed with .rn.
3384: * r->current_string has already been set up by roff_parse().
3385: */
3386: static enum rofferr
3387: roff_renamed(ROFF_ARGS)
3388: {
3389: char *nbuf;
3390:
1.315 schwarze 3391: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3392: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3393: free(buf->buf);
3394: buf->buf = nbuf;
3395: return ROFF_CONT;
3396: }
3397:
1.212 schwarze 3398: static size_t
1.121 schwarze 3399: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3400: {
3401: char *name, *cp;
1.212 schwarze 3402: size_t namesz;
1.121 schwarze 3403:
3404: name = *cpp;
3405: if ('\0' == *name)
1.277 schwarze 3406: return 0;
1.121 schwarze 3407:
1.212 schwarze 3408: /* Read until end of name and terminate it with NUL. */
3409: for (cp = name; 1; cp++) {
3410: if ('\0' == *cp || ' ' == *cp) {
3411: namesz = cp - name;
3412: break;
3413: }
1.121 schwarze 3414: if ('\\' != *cp)
3415: continue;
1.215 schwarze 3416: namesz = cp - name;
3417: if ('{' == cp[1] || '}' == cp[1])
3418: break;
1.121 schwarze 3419: cp++;
3420: if ('\\' == *cp)
3421: continue;
1.224 schwarze 3422: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3423: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3424: mandoc_escape((const char **)&cp, NULL, NULL);
3425: break;
1.121 schwarze 3426: }
3427:
3428: /* Read past spaces. */
3429: while (' ' == *cp)
3430: cp++;
3431:
3432: *cpp = cp;
1.277 schwarze 3433: return namesz;
1.121 schwarze 3434: }
3435:
1.106 kristaps 3436: /*
3437: * Store *string into the user-defined string called *name.
3438: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3439: * append == 0: replace mode
3440: * append == 1: single-line append mode
3441: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3442: */
1.94 kristaps 3443: static void
1.106 kristaps 3444: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3445: int append)
1.92 schwarze 3446: {
1.315 schwarze 3447: size_t namesz;
1.164 kristaps 3448:
1.315 schwarze 3449: namesz = strlen(name);
3450: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 3451: string ? strlen(string) : 0, append);
1.315 schwarze 3452: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 3453: }
3454:
3455: static void
1.166 kristaps 3456: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3457: const char *string, size_t stringsz, int append)
1.164 kristaps 3458: {
1.166 kristaps 3459: struct roffkv *n;
1.164 kristaps 3460: char *c;
3461: int i;
3462: size_t oldch, newch;
1.92 schwarze 3463:
1.106 kristaps 3464: /* Search for an existing string with the same name. */
1.164 kristaps 3465: n = *r;
3466:
1.211 schwarze 3467: while (n && (namesz != n->key.sz ||
3468: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3469: n = n->next;
1.94 kristaps 3470:
3471: if (NULL == n) {
1.106 kristaps 3472: /* Create a new string table entry. */
1.166 kristaps 3473: n = mandoc_malloc(sizeof(struct roffkv));
3474: n->key.p = mandoc_strndup(name, namesz);
3475: n->key.sz = namesz;
3476: n->val.p = NULL;
3477: n->val.sz = 0;
1.164 kristaps 3478: n->next = *r;
3479: *r = n;
1.193 schwarze 3480: } else if (0 == append) {
1.166 kristaps 3481: free(n->val.p);
3482: n->val.p = NULL;
3483: n->val.sz = 0;
1.106 kristaps 3484: }
3485:
3486: if (NULL == string)
3487: return;
3488:
3489: /*
3490: * One additional byte for the '\n' in multiline mode,
3491: * and one for the terminating '\0'.
3492: */
1.193 schwarze 3493: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3494:
1.166 kristaps 3495: if (NULL == n->val.p) {
3496: n->val.p = mandoc_malloc(newch);
3497: *n->val.p = '\0';
1.106 kristaps 3498: oldch = 0;
3499: } else {
1.166 kristaps 3500: oldch = n->val.sz;
3501: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3502: }
3503:
3504: /* Skip existing content in the destination buffer. */
1.166 kristaps 3505: c = n->val.p + (int)oldch;
1.106 kristaps 3506:
3507: /* Append new content to the destination buffer. */
1.164 kristaps 3508: i = 0;
3509: while (i < (int)stringsz) {
1.106 kristaps 3510: /*
3511: * Rudimentary roff copy mode:
3512: * Handle escaped backslashes.
3513: */
1.164 kristaps 3514: if ('\\' == string[i] && '\\' == string[i + 1])
3515: i++;
3516: *c++ = string[i++];
1.106 kristaps 3517: }
1.94 kristaps 3518:
1.106 kristaps 3519: /* Append terminating bytes. */
1.193 schwarze 3520: if (1 < append)
1.106 kristaps 3521: *c++ = '\n';
1.163 kristaps 3522:
1.106 kristaps 3523: *c = '\0';
1.166 kristaps 3524: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3525: }
3526:
1.94 kristaps 3527: static const char *
1.315 schwarze 3528: roff_getstrn(const struct roff *r, const char *name, size_t len,
3529: int *deftype)
1.92 schwarze 3530: {
1.315 schwarze 3531: const struct roffkv *n;
3532: int i;
3533: enum roff_tok tok;
3534:
3535: if (*deftype & ROFFDEF_USER) {
3536: for (n = r->strtab; n != NULL; n = n->next) {
3537: if (strncmp(name, n->key.p, len) == 0 &&
3538: n->key.p[len] == '\0' &&
3539: n->val.p != NULL) {
3540: *deftype = ROFFDEF_USER;
3541: return n->val.p;
3542: }
3543: }
3544: }
3545: if (*deftype & ROFFDEF_PRE) {
3546: for (i = 0; i < PREDEFS_MAX; i++) {
3547: if (strncmp(name, predefs[i].name, len) == 0 &&
3548: predefs[i].name[len] == '\0') {
3549: *deftype = ROFFDEF_PRE;
3550: return predefs[i].str;
3551: }
3552: }
3553: }
3554: if (*deftype & ROFFDEF_REN) {
3555: for (n = r->rentab; n != NULL; n = n->next) {
3556: if (strncmp(name, n->key.p, len) == 0 &&
3557: n->key.p[len] == '\0' &&
3558: n->val.p != NULL) {
3559: *deftype = ROFFDEF_REN;
3560: return n->val.p;
3561: }
3562: }
3563: }
3564: if (*deftype & ROFFDEF_STD) {
3565: if (r->man->macroset != MACROSET_MAN) {
3566: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3567: if (strncmp(name, roff_name[tok], len) == 0 &&
3568: roff_name[tok][len] == '\0') {
3569: *deftype = ROFFDEF_STD;
3570: return NULL;
3571: }
3572: }
3573: }
3574: if (r->man->macroset != MACROSET_MDOC) {
3575: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3576: if (strncmp(name, roff_name[tok], len) == 0 &&
3577: roff_name[tok][len] == '\0') {
3578: *deftype = ROFFDEF_STD;
3579: return NULL;
3580: }
3581: }
3582: }
3583: }
3584: *deftype = 0;
1.277 schwarze 3585: return NULL;
1.92 schwarze 3586: }
3587:
1.94 kristaps 3588: static void
1.167 kristaps 3589: roff_freestr(struct roffkv *r)
1.92 schwarze 3590: {
1.166 kristaps 3591: struct roffkv *n, *nn;
1.92 schwarze 3592:
1.167 kristaps 3593: for (n = r; n; n = nn) {
1.166 kristaps 3594: free(n->key.p);
3595: free(n->val.p);
1.92 schwarze 3596: nn = n->next;
3597: free(n);
3598: }
1.114 kristaps 3599: }
1.266 schwarze 3600:
3601: /* --- accessors and utility functions ------------------------------------ */
1.114 kristaps 3602:
3603: const struct tbl_span *
3604: roff_span(const struct roff *r)
3605: {
1.207 schwarze 3606:
1.277 schwarze 3607: return r->tbl ? tbl_span(r->tbl) : NULL;
1.164 kristaps 3608: }
3609:
3610: /*
3611: * Duplicate an input string, making the appropriate character
3612: * conversations (as stipulated by `tr') along the way.
3613: * Returns a heap-allocated string with all the replacements made.
3614: */
3615: char *
3616: roff_strdup(const struct roff *r, const char *p)
3617: {
1.166 kristaps 3618: const struct roffkv *cp;
1.164 kristaps 3619: char *res;
3620: const char *pp;
3621: size_t ssz, sz;
3622: enum mandoc_esc esc;
3623:
1.167 kristaps 3624: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3625: return mandoc_strdup(p);
1.164 kristaps 3626: else if ('\0' == *p)
1.277 schwarze 3627: return mandoc_strdup("");
1.164 kristaps 3628:
3629: /*
3630: * Step through each character looking for term matches
3631: * (remember that a `tr' can be invoked with an escape, which is
3632: * a glyph but the escape is multi-character).
3633: * We only do this if the character hash has been initialised
3634: * and the string is >0 length.
3635: */
3636:
3637: res = NULL;
3638: ssz = 0;
3639:
3640: while ('\0' != *p) {
1.289 schwarze 3641: assert((unsigned int)*p < 128);
3642: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3643: sz = r->xtab[(int)*p].sz;
3644: res = mandoc_realloc(res, ssz + sz + 1);
3645: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3646: ssz += sz;
3647: p++;
3648: continue;
3649: } else if ('\\' != *p) {
3650: res = mandoc_realloc(res, ssz + 2);
3651: res[ssz++] = *p++;
3652: continue;
3653: }
3654:
1.164 kristaps 3655: /* Search for term matches. */
1.167 kristaps 3656: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3657: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3658: break;
3659:
3660: if (NULL != cp) {
3661: /*
3662: * A match has been found.
3663: * Append the match to the array and move
3664: * forward by its keysize.
3665: */
1.207 schwarze 3666: res = mandoc_realloc(res,
3667: ssz + cp->val.sz + 1);
1.166 kristaps 3668: memcpy(res + ssz, cp->val.p, cp->val.sz);
3669: ssz += cp->val.sz;
3670: p += (int)cp->key.sz;
1.164 kristaps 3671: continue;
3672: }
3673:
1.167 kristaps 3674: /*
3675: * Handle escapes carefully: we need to copy
3676: * over just the escape itself, or else we might
3677: * do replacements within the escape itself.
3678: * Make sure to pass along the bogus string.
3679: */
3680: pp = p++;
3681: esc = mandoc_escape(&p, NULL, NULL);
3682: if (ESCAPE_ERROR == esc) {
3683: sz = strlen(pp);
1.164 kristaps 3684: res = mandoc_realloc(res, ssz + sz + 1);
3685: memcpy(res + ssz, pp, sz);
1.167 kristaps 3686: break;
1.164 kristaps 3687: }
1.207 schwarze 3688: /*
3689: * We bail out on bad escapes.
1.167 kristaps 3690: * No need to warn: we already did so when
3691: * roff_res() was called.
3692: */
3693: sz = (int)(p - pp);
3694: res = mandoc_realloc(res, ssz + sz + 1);
3695: memcpy(res + ssz, pp, sz);
3696: ssz += sz;
1.164 kristaps 3697: }
3698:
3699: res[(int)ssz] = '\0';
1.277 schwarze 3700: return res;
1.227 schwarze 3701: }
3702:
3703: int
3704: roff_getformat(const struct roff *r)
3705: {
3706:
1.277 schwarze 3707: return r->format;
1.174 kristaps 3708: }
3709:
3710: /*
1.207 schwarze 3711: * Find out whether a line is a macro line or not.
1.174 kristaps 3712: * If it is, adjust the current position and return one; if it isn't,
3713: * return zero and don't change the current position.
3714: * If the control character has been set with `.cc', then let that grain
3715: * precedence.
3716: * This is slighly contrary to groff, where using the non-breaking
3717: * control character when `cc' has been invoked will cause the
3718: * non-breaking macro contents to be printed verbatim.
3719: */
3720: int
3721: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3722: {
3723: int pos;
3724:
3725: pos = *ppos;
3726:
1.303 schwarze 3727: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 3728: pos++;
1.303 schwarze 3729: else if (r->control != '\0')
1.277 schwarze 3730: return 0;
1.174 kristaps 3731: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3732: pos += 2;
3733: else if ('.' == cp[pos] || '\'' == cp[pos])
3734: pos++;
3735: else
1.277 schwarze 3736: return 0;
1.174 kristaps 3737:
3738: while (' ' == cp[pos] || '\t' == cp[pos])
3739: pos++;
3740:
3741: *ppos = pos;
1.277 schwarze 3742: return 1;
1.74 kristaps 3743: }
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