Annotation of mandoc/roff.c, Revision 1.349
1.349 ! schwarze 1: /* $Id: roff.c,v 1.348 2018/12/13 05:23:38 schwarze Exp $ */
1.1 kristaps 2: /*
1.267 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.325 schwarze 4: * Copyright (c) 2010-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.66 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.106 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.66 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.106 kristaps 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.66 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 17: */
1.66 kristaps 18: #include "config.h"
1.225 schwarze 19:
20: #include <sys/types.h>
1.30 kristaps 21:
1.67 kristaps 22: #include <assert.h>
1.85 kristaps 23: #include <ctype.h>
1.245 schwarze 24: #include <limits.h>
1.295 schwarze 25: #include <stddef.h>
26: #include <stdint.h>
1.178 schwarze 27: #include <stdio.h>
1.1 kristaps 28: #include <stdlib.h>
1.67 kristaps 29: #include <string.h>
1.1 kristaps 30:
1.201 schwarze 31: #include "mandoc_aux.h"
1.295 schwarze 32: #include "mandoc_ohash.h"
1.345 schwarze 33: #include "mandoc.h"
1.265 schwarze 34: #include "roff.h"
1.349 ! schwarze 35: #include "mandoc_parse.h"
1.226 schwarze 36: #include "libmandoc.h"
1.266 schwarze 37: #include "roff_int.h"
1.346 schwarze 38: #include "tbl_parse.h"
1.347 schwarze 39: #include "eqn_parse.h"
1.82 kristaps 40:
1.170 schwarze 41: /* Maximum number of string expansions per line, to break infinite loops. */
42: #define EXPAND_LIMIT 1000
43:
1.315 schwarze 44: /* Types of definitions of macros and strings. */
45: #define ROFFDEF_USER (1 << 1) /* User-defined. */
46: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
47: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
48: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
49: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
50: ROFFDEF_REN | ROFFDEF_STD)
1.325 schwarze 51: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 52:
1.266 schwarze 53: /* --- data types --------------------------------------------------------- */
54:
1.147 kristaps 55: /*
1.167 kristaps 56: * An incredibly-simple string buffer.
57: */
1.94 kristaps 58: struct roffstr {
1.167 kristaps 59: char *p; /* nil-terminated buffer */
60: size_t sz; /* saved strlen(p) */
1.166 kristaps 61: };
62:
63: /*
1.167 kristaps 64: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 65: */
66: struct roffkv {
67: struct roffstr key;
68: struct roffstr val;
69: struct roffkv *next; /* next in list */
1.94 kristaps 70: };
71:
1.180 schwarze 72: /*
73: * A single number register as part of a singly-linked list.
74: */
75: struct roffreg {
76: struct roffstr key;
1.181 schwarze 77: int val;
1.327 schwarze 78: int step;
1.180 schwarze 79: struct roffreg *next;
80: };
81:
1.295 schwarze 82: /*
83: * Association of request and macro names with token IDs.
84: */
85: struct roffreq {
86: enum roff_tok tok;
87: char name[];
88: };
89:
1.339 schwarze 90: /*
91: * A macro processing context.
92: * More than one is needed when macro calls are nested.
93: */
94: struct mctx {
95: char **argv;
96: int argc;
97: int argsz;
98: };
99:
1.67 kristaps 100: struct roff {
1.128 kristaps 101: struct mparse *parse; /* parse point */
1.296 schwarze 102: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 103: struct roffnode *last; /* leaf of stack */
1.339 schwarze 104: struct mctx *mstack; /* stack of macro contexts */
1.223 schwarze 105: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 106: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 107: struct roffreg *regtab; /* number registers */
1.166 kristaps 108: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 109: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 110: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
111: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 112: const char *current_string; /* value of last called user macro */
1.118 kristaps 113: struct tbl_node *first_tbl; /* first table parsed */
114: struct tbl_node *last_tbl; /* last table parsed */
115: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 116: struct eqn_node *last_eqn; /* equation parser */
117: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 118: int eqn_inline; /* current equation is inline */
1.223 schwarze 119: int options; /* parse options */
1.339 schwarze 120: int mstacksz; /* current size of mstack */
121: int mstackpos; /* position in mstack */
1.223 schwarze 122: int rstacksz; /* current size limit of rstack */
123: int rstackpos; /* position in rstack */
1.227 schwarze 124: int format; /* current file in mdoc or man format */
1.223 schwarze 125: char control; /* control character */
1.303 schwarze 126: char escape; /* escape character */
1.79 kristaps 127: };
128:
1.67 kristaps 129: struct roffnode {
1.294 schwarze 130: enum roff_tok tok; /* type of node */
1.67 kristaps 131: struct roffnode *parent; /* up one in stack */
132: int line; /* parse line */
133: int col; /* parse col */
1.106 kristaps 134: char *name; /* node name, e.g. macro name */
1.79 kristaps 135: char *end; /* end-rules: custom token */
136: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 137: int rule; /* current evaluation rule */
1.67 kristaps 138: };
139:
140: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 141: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 142: struct buf *buf, /* input buffer */ \
1.67 kristaps 143: int ln, /* parse line */ \
1.75 kristaps 144: int ppos, /* original pos in buffer */ \
145: int pos, /* current pos in buffer */ \
1.74 kristaps 146: int *offs /* reset offset of buffer data */
1.67 kristaps 147:
1.340 schwarze 148: typedef int (*roffproc)(ROFF_ARGS);
1.67 kristaps 149:
150: struct roffmac {
1.79 kristaps 151: roffproc proc; /* process new macro */
152: roffproc text; /* process as child text of macro */
153: roffproc sub; /* process as child of macro */
154: int flags;
155: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 156: };
157:
1.141 kristaps 158: struct predef {
159: const char *name; /* predefined input name */
160: const char *str; /* replacement symbol */
161: };
162:
163: #define PREDEF(__name, __str) \
164: { (__name), (__str) },
165:
1.266 schwarze 166: /* --- function prototypes ------------------------------------------------ */
167:
1.340 schwarze 168: static int roffnode_cleanscope(struct roff *);
169: static int roffnode_pop(struct roff *);
1.294 schwarze 170: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 171: const char *, int, int);
1.346 schwarze 172: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.340 schwarze 173: static int roff_als(ROFF_ARGS);
174: static int roff_block(ROFF_ARGS);
175: static int roff_block_text(ROFF_ARGS);
176: static int roff_block_sub(ROFF_ARGS);
177: static int roff_br(ROFF_ARGS);
178: static int roff_cblock(ROFF_ARGS);
179: static int roff_cc(ROFF_ARGS);
180: static int roff_ccond(struct roff *, int, int);
1.341 schwarze 181: static int roff_char(ROFF_ARGS);
1.340 schwarze 182: static int roff_cond(ROFF_ARGS);
183: static int roff_cond_text(ROFF_ARGS);
184: static int roff_cond_sub(ROFF_ARGS);
185: static int roff_ds(ROFF_ARGS);
186: static int roff_ec(ROFF_ARGS);
187: static int roff_eo(ROFF_ARGS);
188: static int roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 189: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 190: static int roff_evalnum(struct roff *, int,
191: const char *, int *, int *, int);
192: static int roff_evalpar(struct roff *, int,
1.261 schwarze 193: const char *, int *, int *, int);
1.198 schwarze 194: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 195: static void roff_free1(struct roff *);
1.180 schwarze 196: static void roff_freereg(struct roffreg *);
1.167 kristaps 197: static void roff_freestr(struct roffkv *);
1.212 schwarze 198: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 199: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 200: static int roff_getop(const char *, int *, char *);
1.327 schwarze 201: static int roff_getregn(struct roff *,
202: const char *, size_t, char);
1.273 schwarze 203: static int roff_getregro(const struct roff *,
204: const char *name);
1.325 schwarze 205: static const char *roff_getstrn(struct roff *,
1.315 schwarze 206: const char *, size_t, int *);
1.271 schwarze 207: static int roff_hasregn(const struct roff *,
208: const char *, size_t);
1.340 schwarze 209: static int roff_insec(ROFF_ARGS);
210: static int roff_it(ROFF_ARGS);
211: static int roff_line_ignore(ROFF_ARGS);
1.265 schwarze 212: static void roff_man_alloc1(struct roff_man *);
213: static void roff_man_free1(struct roff_man *);
1.340 schwarze 214: static int roff_manyarg(ROFF_ARGS);
215: static int roff_nop(ROFF_ARGS);
216: static int roff_nr(ROFF_ARGS);
217: static int roff_onearg(ROFF_ARGS);
1.294 schwarze 218: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 219: int, int);
1.340 schwarze 220: static int roff_parsetext(struct roff *, struct buf *,
1.305 schwarze 221: int, int *);
1.340 schwarze 222: static int roff_renamed(ROFF_ARGS);
223: static int roff_res(struct roff *, struct buf *, int, int);
224: static int roff_return(ROFF_ARGS);
225: static int roff_rm(ROFF_ARGS);
226: static int roff_rn(ROFF_ARGS);
227: static int roff_rr(ROFF_ARGS);
1.326 schwarze 228: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 229: size_t, int, char, int);
1.94 kristaps 230: static void roff_setstr(struct roff *,
1.106 kristaps 231: const char *, const char *, int);
1.207 schwarze 232: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 233: size_t, const char *, size_t, int);
1.340 schwarze 234: static int roff_shift(ROFF_ARGS);
235: static int roff_so(ROFF_ARGS);
236: static int roff_tr(ROFF_ARGS);
237: static int roff_Dd(ROFF_ARGS);
238: static int roff_TE(ROFF_ARGS);
239: static int roff_TS(ROFF_ARGS);
240: static int roff_EQ(ROFF_ARGS);
241: static int roff_EN(ROFF_ARGS);
242: static int roff_T_(ROFF_ARGS);
243: static int roff_unsupp(ROFF_ARGS);
244: static int roff_userdef(ROFF_ARGS);
1.67 kristaps 245:
1.266 schwarze 246: /* --- constant data ------------------------------------------------------ */
247:
1.261 schwarze 248: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
249: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
250:
1.294 schwarze 251: const char *__roff_name[MAN_MAX + 1] = {
1.305 schwarze 252: "br", "ce", "ft", "ll",
1.312 schwarze 253: "mc", "po", "rj", "sp",
254: "ta", "ti", NULL,
1.294 schwarze 255: "ab", "ad", "af", "aln",
256: "als", "am", "am1", "ami",
257: "ami1", "as", "as1", "asciify",
258: "backtrace", "bd", "bleedat", "blm",
259: "box", "boxa", "bp", "BP",
260: "break", "breakchar", "brnl", "brp",
1.305 schwarze 261: "brpnl", "c2", "cc",
1.294 schwarze 262: "cf", "cflags", "ch", "char",
263: "chop", "class", "close", "CL",
264: "color", "composite", "continue", "cp",
265: "cropat", "cs", "cu", "da",
266: "dch", "Dd", "de", "de1",
267: "defcolor", "dei", "dei1", "device",
268: "devicem", "di", "do", "ds",
269: "ds1", "dwh", "dt", "ec",
270: "ecr", "ecs", "el", "em",
271: "EN", "eo", "EP", "EQ",
272: "errprint", "ev", "evc", "ex",
273: "fallback", "fam", "fc", "fchar",
274: "fcolor", "fdeferlig", "feature", "fkern",
275: "fl", "flig", "fp", "fps",
276: "fschar", "fspacewidth", "fspecial", "ftr",
277: "fzoom", "gcolor", "hc", "hcode",
278: "hidechar", "hla", "hlm", "hpf",
279: "hpfa", "hpfcode", "hw", "hy",
280: "hylang", "hylen", "hym", "hypp",
281: "hys", "ie", "if", "ig",
282: "index", "it", "itc", "IX",
283: "kern", "kernafter", "kernbefore", "kernpair",
284: "lc", "lc_ctype", "lds", "length",
285: "letadj", "lf", "lg", "lhang",
286: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 287: "ls", "lsm", "lt",
1.294 schwarze 288: "mediasize", "minss", "mk", "mso",
289: "na", "ne", "nh", "nhychar",
290: "nm", "nn", "nop", "nr",
291: "nrf", "nroff", "ns", "nx",
292: "open", "opena", "os", "output",
293: "padj", "papersize", "pc", "pev",
294: "pi", "PI", "pl", "pm",
1.312 schwarze 295: "pn", "pnr", "ps",
1.294 schwarze 296: "psbb", "pshape", "pso", "ptr",
297: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 298: "return", "rfschar", "rhang",
1.294 schwarze 299: "rm", "rn", "rnn", "rr",
300: "rs", "rt", "schar", "sentchar",
301: "shc", "shift", "sizes", "so",
302: "spacewidth", "special", "spreadwarn", "ss",
303: "sty", "substring", "sv", "sy",
1.300 schwarze 304: "T&", "tc", "TE",
1.301 schwarze 305: "TH", "tkf", "tl",
1.294 schwarze 306: "tm", "tm1", "tmc", "tr",
307: "track", "transchar", "trf", "trimat",
308: "trin", "trnt", "troff", "TS",
309: "uf", "ul", "unformat", "unwatch",
310: "unwatchn", "vpt", "vs", "warn",
311: "warnscale", "watch", "watchlength", "watchn",
312: "wh", "while", "write", "writec",
313: "writem", "xflag", ".", NULL,
1.306 schwarze 314: NULL, "text",
1.294 schwarze 315: "Dd", "Dt", "Os", "Sh",
316: "Ss", "Pp", "D1", "Dl",
317: "Bd", "Ed", "Bl", "El",
318: "It", "Ad", "An", "Ap",
319: "Ar", "Cd", "Cm", "Dv",
320: "Er", "Ev", "Ex", "Fa",
321: "Fd", "Fl", "Fn", "Ft",
322: "Ic", "In", "Li", "Nd",
323: "Nm", "Op", "Ot", "Pa",
324: "Rv", "St", "Va", "Vt",
325: "Xr", "%A", "%B", "%D",
326: "%I", "%J", "%N", "%O",
327: "%P", "%R", "%T", "%V",
328: "Ac", "Ao", "Aq", "At",
329: "Bc", "Bf", "Bo", "Bq",
330: "Bsx", "Bx", "Db", "Dc",
331: "Do", "Dq", "Ec", "Ef",
332: "Em", "Eo", "Fx", "Ms",
333: "No", "Ns", "Nx", "Ox",
334: "Pc", "Pf", "Po", "Pq",
335: "Qc", "Ql", "Qo", "Qq",
336: "Re", "Rs", "Sc", "So",
337: "Sq", "Sm", "Sx", "Sy",
338: "Tn", "Ux", "Xc", "Xo",
339: "Fo", "Fc", "Oo", "Oc",
340: "Bk", "Ek", "Bt", "Hf",
341: "Fr", "Ud", "Lb", "Lp",
342: "Lk", "Mt", "Brq", "Bro",
343: "Brc", "%C", "Es", "En",
1.299 schwarze 344: "Dx", "%Q", "%U", "Ta",
345: NULL,
1.294 schwarze 346: "TH", "SH", "SS", "TP",
1.332 schwarze 347: "TQ",
1.294 schwarze 348: "LP", "PP", "P", "IP",
349: "HP", "SM", "SB", "BI",
350: "IB", "BR", "RB", "R",
351: "B", "I", "IR", "RI",
1.299 schwarze 352: "nf", "fi",
1.294 schwarze 353: "RE", "RS", "DT", "UC",
1.297 schwarze 354: "PD", "AT", "in",
1.333 schwarze 355: "SY", "YS", "OP",
356: "EX", "EE", "UR",
1.317 schwarze 357: "UE", "MT", "ME", NULL
1.294 schwarze 358: };
359: const char *const *roff_name = __roff_name;
360:
361: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 362: { roff_br, NULL, NULL, 0 }, /* br */
1.305 schwarze 363: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.297 schwarze 364: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 365: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 366: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.312 schwarze 367: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 368: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 369: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 370: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 371: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 372: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 373: { roff_unsupp, NULL, NULL, 0 }, /* ab */
374: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
375: { roff_line_ignore, NULL, NULL, 0 }, /* af */
376: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 377: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 378: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
379: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
380: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
381: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
382: { roff_ds, NULL, NULL, 0 }, /* as */
383: { roff_ds, NULL, NULL, 0 }, /* as1 */
384: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
385: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
386: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
387: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
388: { roff_unsupp, NULL, NULL, 0 }, /* blm */
389: { roff_unsupp, NULL, NULL, 0 }, /* box */
390: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
391: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
392: { roff_unsupp, NULL, NULL, 0 }, /* BP */
393: { roff_unsupp, NULL, NULL, 0 }, /* break */
394: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
395: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 396: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 397: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
398: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
399: { roff_cc, NULL, NULL, 0 }, /* cc */
400: { roff_insec, NULL, NULL, 0 }, /* cf */
401: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
402: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.341 schwarze 403: { roff_char, NULL, NULL, 0 }, /* char */
1.295 schwarze 404: { roff_unsupp, NULL, NULL, 0 }, /* chop */
405: { roff_line_ignore, NULL, NULL, 0 }, /* class */
406: { roff_insec, NULL, NULL, 0 }, /* close */
407: { roff_unsupp, NULL, NULL, 0 }, /* CL */
408: { roff_line_ignore, NULL, NULL, 0 }, /* color */
409: { roff_unsupp, NULL, NULL, 0 }, /* composite */
410: { roff_unsupp, NULL, NULL, 0 }, /* continue */
411: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
412: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
413: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
414: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
415: { roff_unsupp, NULL, NULL, 0 }, /* da */
416: { roff_unsupp, NULL, NULL, 0 }, /* dch */
417: { roff_Dd, NULL, NULL, 0 }, /* Dd */
418: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
419: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
420: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
421: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
422: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
423: { roff_unsupp, NULL, NULL, 0 }, /* device */
424: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
425: { roff_unsupp, NULL, NULL, 0 }, /* di */
426: { roff_unsupp, NULL, NULL, 0 }, /* do */
427: { roff_ds, NULL, NULL, 0 }, /* ds */
428: { roff_ds, NULL, NULL, 0 }, /* ds1 */
429: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
430: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 431: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 432: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
433: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
434: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
435: { roff_unsupp, NULL, NULL, 0 }, /* em */
436: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 437: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 438: { roff_unsupp, NULL, NULL, 0 }, /* EP */
439: { roff_EQ, NULL, NULL, 0 }, /* EQ */
440: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
441: { roff_unsupp, NULL, NULL, 0 }, /* ev */
442: { roff_unsupp, NULL, NULL, 0 }, /* evc */
443: { roff_unsupp, NULL, NULL, 0 }, /* ex */
444: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
445: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
446: { roff_unsupp, NULL, NULL, 0 }, /* fc */
447: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
448: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
449: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
450: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
451: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
452: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
453: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
454: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
455: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
456: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
457: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
458: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
459: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
460: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
461: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
462: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
463: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
464: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
465: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
466: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
467: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
468: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
469: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
470: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
471: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
472: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
473: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
474: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
475: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
476: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
477: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
478: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
479: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
480: { roff_unsupp, NULL, NULL, 0 }, /* index */
481: { roff_it, NULL, NULL, 0 }, /* it */
482: { roff_unsupp, NULL, NULL, 0 }, /* itc */
483: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
484: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
485: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
486: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
487: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
488: { roff_unsupp, NULL, NULL, 0 }, /* lc */
489: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
490: { roff_unsupp, NULL, NULL, 0 }, /* lds */
491: { roff_unsupp, NULL, NULL, 0 }, /* length */
492: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
493: { roff_insec, NULL, NULL, 0 }, /* lf */
494: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
495: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
496: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
497: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
498: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
499: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
500: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
501: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
502: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
503: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
504: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
505: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
506: { roff_insec, NULL, NULL, 0 }, /* mso */
507: { roff_line_ignore, NULL, NULL, 0 }, /* na */
508: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
509: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
510: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
511: { roff_unsupp, NULL, NULL, 0 }, /* nm */
512: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 513: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 514: { roff_nr, NULL, NULL, 0 }, /* nr */
515: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
516: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
517: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
518: { roff_insec, NULL, NULL, 0 }, /* nx */
519: { roff_insec, NULL, NULL, 0 }, /* open */
520: { roff_insec, NULL, NULL, 0 }, /* opena */
521: { roff_line_ignore, NULL, NULL, 0 }, /* os */
522: { roff_unsupp, NULL, NULL, 0 }, /* output */
523: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
524: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
525: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
526: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
527: { roff_insec, NULL, NULL, 0 }, /* pi */
528: { roff_unsupp, NULL, NULL, 0 }, /* PI */
529: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
530: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
531: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
532: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
533: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
534: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
535: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
536: { roff_insec, NULL, NULL, 0 }, /* pso */
537: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
538: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
539: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
540: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
541: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 schwarze 542: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 543: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
544: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
545: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 546: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 547: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
548: { roff_rr, NULL, NULL, 0 }, /* rr */
549: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
550: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
551: { roff_unsupp, NULL, NULL, 0 }, /* schar */
552: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
553: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 schwarze 554: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 555: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
556: { roff_so, NULL, NULL, 0 }, /* so */
557: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
558: { roff_line_ignore, NULL, NULL, 0 }, /* special */
559: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
560: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
561: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
562: { roff_unsupp, NULL, NULL, 0 }, /* substring */
563: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
564: { roff_insec, NULL, NULL, 0 }, /* sy */
565: { roff_T_, NULL, NULL, 0 }, /* T& */
566: { roff_unsupp, NULL, NULL, 0 }, /* tc */
567: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 568: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 569: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
570: { roff_unsupp, NULL, NULL, 0 }, /* tl */
571: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
572: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
573: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
574: { roff_tr, NULL, NULL, 0 }, /* tr */
575: { roff_line_ignore, NULL, NULL, 0 }, /* track */
576: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
577: { roff_insec, NULL, NULL, 0 }, /* trf */
578: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
579: { roff_unsupp, NULL, NULL, 0 }, /* trin */
580: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
581: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
582: { roff_TS, NULL, NULL, 0 }, /* TS */
583: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
584: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
585: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
586: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
587: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
588: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
589: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
590: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
591: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
592: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
593: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
594: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
595: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.340 schwarze 596: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.295 schwarze 597: { roff_insec, NULL, NULL, 0 }, /* write */
598: { roff_insec, NULL, NULL, 0 }, /* writec */
599: { roff_insec, NULL, NULL, 0 }, /* writem */
600: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
601: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 602: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 603: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 604: };
605:
1.141 kristaps 606: /* Array of injected predefined strings. */
607: #define PREDEFS_MAX 38
608: static const struct predef predefs[PREDEFS_MAX] = {
609: #include "predefs.in"
610: };
611:
1.305 schwarze 612: static int roffce_lines; /* number of input lines to center */
613: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 614: static int roffit_lines; /* number of lines to delay */
615: static char *roffit_macro; /* nil-terminated macro line */
616:
1.207 schwarze 617:
1.266 schwarze 618: /* --- request table ------------------------------------------------------ */
619:
1.295 schwarze 620: struct ohash *
621: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 622: {
1.295 schwarze 623: struct ohash *htab;
624: struct roffreq *req;
625: enum roff_tok tok;
626: size_t sz;
627: unsigned int slot;
1.85 kristaps 628:
1.295 schwarze 629: htab = mandoc_malloc(sizeof(*htab));
630: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 631:
1.295 schwarze 632: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 633: if (roff_name[tok] == NULL)
634: continue;
1.295 schwarze 635: sz = strlen(roff_name[tok]);
636: req = mandoc_malloc(sizeof(*req) + sz + 1);
637: req->tok = tok;
638: memcpy(req->name, roff_name[tok], sz + 1);
639: slot = ohash_qlookup(htab, req->name);
640: ohash_insert(htab, slot, req);
1.85 kristaps 641: }
1.295 schwarze 642: return htab;
1.85 kristaps 643: }
644:
1.295 schwarze 645: void
646: roffhash_free(struct ohash *htab)
1.67 kristaps 647: {
1.295 schwarze 648: struct roffreq *req;
649: unsigned int slot;
1.67 kristaps 650:
1.295 schwarze 651: if (htab == NULL)
652: return;
653: for (req = ohash_first(htab, &slot); req != NULL;
654: req = ohash_next(htab, &slot))
655: free(req);
656: ohash_delete(htab);
657: free(htab);
658: }
659:
660: enum roff_tok
661: roffhash_find(struct ohash *htab, const char *name, size_t sz)
662: {
663: struct roffreq *req;
664: const char *end;
665:
666: if (sz) {
667: end = name + sz;
668: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
669: } else
670: req = ohash_find(htab, ohash_qlookup(htab, name));
671: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 672: }
673:
1.266 schwarze 674: /* --- stack of request blocks -------------------------------------------- */
675:
1.67 kristaps 676: /*
677: * Pop the current node off of the stack of roff instructions currently
678: * pending.
679: */
1.340 schwarze 680: static int
1.67 kristaps 681: roffnode_pop(struct roff *r)
682: {
683: struct roffnode *p;
1.340 schwarze 684: int inloop;
1.67 kristaps 685:
1.207 schwarze 686: p = r->last;
1.340 schwarze 687: inloop = p->tok == ROFF_while;
688: r->last = p->parent;
1.106 kristaps 689: free(p->name);
690: free(p->end);
1.67 kristaps 691: free(p);
1.340 schwarze 692: return inloop;
1.67 kristaps 693: }
694:
695: /*
696: * Push a roff node onto the instruction stack. This must later be
697: * removed with roffnode_pop().
698: */
1.98 schwarze 699: static void
1.294 schwarze 700: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 701: int line, int col)
1.67 kristaps 702: {
703: struct roffnode *p;
704:
1.98 schwarze 705: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 706: p->tok = tok;
1.106 kristaps 707: if (name)
708: p->name = mandoc_strdup(name);
1.67 kristaps 709: p->parent = r->last;
710: p->line = line;
711: p->col = col;
1.198 schwarze 712: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 713:
714: r->last = p;
715: }
716:
1.266 schwarze 717: /* --- roff parser state data management ---------------------------------- */
718:
1.67 kristaps 719: static void
720: roff_free1(struct roff *r)
721: {
1.167 kristaps 722: int i;
1.67 kristaps 723:
1.346 schwarze 724: tbl_free(r->first_tbl);
1.113 kristaps 725: r->first_tbl = r->last_tbl = r->tbl = NULL;
726:
1.347 schwarze 727: eqn_free(r->last_eqn);
1.319 schwarze 728: r->last_eqn = r->eqn = NULL;
1.125 kristaps 729:
1.339 schwarze 730: while (r->mstackpos >= 0)
731: roff_userret(r);
732:
1.67 kristaps 733: while (r->last)
734: roffnode_pop(r);
1.109 kristaps 735:
1.223 schwarze 736: free (r->rstack);
737: r->rstack = NULL;
738: r->rstacksz = 0;
739: r->rstackpos = -1;
740:
741: roff_freereg(r->regtab);
742: r->regtab = NULL;
743:
1.167 kristaps 744: roff_freestr(r->strtab);
1.306 schwarze 745: roff_freestr(r->rentab);
1.167 kristaps 746: roff_freestr(r->xmbtab);
1.306 schwarze 747: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 748:
749: if (r->xtab)
750: for (i = 0; i < 128; i++)
751: free(r->xtab[i].p);
752: free(r->xtab);
753: r->xtab = NULL;
1.67 kristaps 754: }
755:
756: void
757: roff_reset(struct roff *r)
758: {
759: roff_free1(r);
1.227 schwarze 760: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 761: r->control = '\0';
762: r->escape = '\\';
1.307 schwarze 763: roffce_lines = 0;
764: roffce_node = NULL;
765: roffit_lines = 0;
766: roffit_macro = NULL;
1.67 kristaps 767: }
768:
769: void
770: roff_free(struct roff *r)
771: {
1.339 schwarze 772: int i;
773:
1.67 kristaps 774: roff_free1(r);
1.339 schwarze 775: for (i = 0; i < r->mstacksz; i++)
776: free(r->mstack[i].argv);
777: free(r->mstack);
1.295 schwarze 778: roffhash_free(r->reqtab);
1.67 kristaps 779: free(r);
780: }
781:
782: struct roff *
1.279 schwarze 783: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 784: {
785: struct roff *r;
786:
1.98 schwarze 787: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 788: r->parse = parse;
1.328 schwarze 789: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.199 schwarze 790: r->options = options;
1.227 schwarze 791: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 792: r->mstackpos = -1;
1.82 kristaps 793: r->rstackpos = -1;
1.303 schwarze 794: r->escape = '\\';
1.277 schwarze 795: return r;
1.265 schwarze 796: }
797:
1.266 schwarze 798: /* --- syntax tree state data management ---------------------------------- */
799:
1.265 schwarze 800: static void
801: roff_man_free1(struct roff_man *man)
802: {
803:
1.266 schwarze 804: if (man->first != NULL)
805: roff_node_delete(man, man->first);
1.265 schwarze 806: free(man->meta.msec);
807: free(man->meta.vol);
808: free(man->meta.os);
809: free(man->meta.arch);
810: free(man->meta.title);
811: free(man->meta.name);
812: free(man->meta.date);
813: }
814:
815: static void
816: roff_man_alloc1(struct roff_man *man)
817: {
818:
819: memset(&man->meta, 0, sizeof(man->meta));
820: man->first = mandoc_calloc(1, sizeof(*man->first));
821: man->first->type = ROFFT_ROOT;
822: man->last = man->first;
823: man->last_es = NULL;
824: man->flags = 0;
825: man->macroset = MACROSET_NONE;
826: man->lastsec = man->lastnamed = SEC_NONE;
827: man->next = ROFF_NEXT_CHILD;
828: }
829:
830: void
831: roff_man_reset(struct roff_man *man)
832: {
833:
834: roff_man_free1(man);
835: roff_man_alloc1(man);
836: }
837:
838: void
839: roff_man_free(struct roff_man *man)
840: {
841:
842: roff_man_free1(man);
843: free(man);
844: }
845:
846: struct roff_man *
847: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.316 schwarze 848: const char *os_s, int quick)
1.265 schwarze 849: {
850: struct roff_man *man;
851:
852: man = mandoc_calloc(1, sizeof(*man));
853: man->parse = parse;
854: man->roff = roff;
1.316 schwarze 855: man->os_s = os_s;
1.265 schwarze 856: man->quick = quick;
857: roff_man_alloc1(man);
1.296 schwarze 858: roff->man = man;
1.277 schwarze 859: return man;
1.67 kristaps 860: }
861:
1.266 schwarze 862: /* --- syntax tree handling ----------------------------------------------- */
863:
864: struct roff_node *
865: roff_node_alloc(struct roff_man *man, int line, int pos,
866: enum roff_type type, int tok)
867: {
868: struct roff_node *n;
869:
870: n = mandoc_calloc(1, sizeof(*n));
871: n->line = line;
872: n->pos = pos;
873: n->tok = tok;
874: n->type = type;
875: n->sec = man->lastsec;
876:
877: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 878: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 879: else
1.285 schwarze 880: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 881: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 882: n->flags |= NODE_LINE;
1.266 schwarze 883: man->flags &= ~MDOC_NEWLINE;
884:
1.277 schwarze 885: return n;
1.266 schwarze 886: }
887:
888: void
889: roff_node_append(struct roff_man *man, struct roff_node *n)
890: {
891:
892: switch (man->next) {
893: case ROFF_NEXT_SIBLING:
1.281 schwarze 894: if (man->last->next != NULL) {
895: n->next = man->last->next;
896: man->last->next->prev = n;
897: } else
898: man->last->parent->last = n;
1.266 schwarze 899: man->last->next = n;
900: n->prev = man->last;
901: n->parent = man->last->parent;
902: break;
903: case ROFF_NEXT_CHILD:
1.287 schwarze 904: if (man->last->child != NULL) {
905: n->next = man->last->child;
906: man->last->child->prev = n;
907: } else
908: man->last->last = n;
1.266 schwarze 909: man->last->child = n;
910: n->parent = man->last;
911: break;
912: default:
913: abort();
914: }
1.282 schwarze 915: man->last = n;
1.266 schwarze 916:
917: switch (n->type) {
918: case ROFFT_HEAD:
919: n->parent->head = n;
920: break;
921: case ROFFT_BODY:
1.282 schwarze 922: if (n->end != ENDBODY_NOT)
923: return;
1.266 schwarze 924: n->parent->body = n;
925: break;
926: case ROFFT_TAIL:
927: n->parent->tail = n;
928: break;
929: default:
1.282 schwarze 930: return;
1.266 schwarze 931: }
1.282 schwarze 932:
933: /*
934: * Copy over the normalised-data pointer of our parent. Not
935: * everybody has one, but copying a null pointer is fine.
936: */
937:
938: n->norm = n->parent->norm;
939: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 940: }
941:
1.267 schwarze 942: void
943: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
944: {
945: struct roff_node *n;
946:
947: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
948: n->string = roff_strdup(man->roff, word);
949: roff_node_append(man, n);
1.286 schwarze 950: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 951: man->next = ROFF_NEXT_SIBLING;
952: }
953:
954: void
955: roff_word_append(struct roff_man *man, const char *word)
956: {
957: struct roff_node *n;
958: char *addstr, *newstr;
959:
960: n = man->last;
961: addstr = roff_strdup(man->roff, word);
962: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
963: free(addstr);
964: free(n->string);
965: n->string = newstr;
966: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 967: }
968:
969: void
970: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
971: {
972: struct roff_node *n;
973:
974: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
975: roff_node_append(man, n);
976: man->next = ROFF_NEXT_CHILD;
977: }
978:
979: struct roff_node *
980: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
981: {
982: struct roff_node *n;
983:
984: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
985: roff_node_append(man, n);
986: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 987: return n;
1.267 schwarze 988: }
989:
1.266 schwarze 990: struct roff_node *
991: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
992: {
993: struct roff_node *n;
994:
995: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
996: roff_node_append(man, n);
997: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 998: return n;
1.266 schwarze 999: }
1000:
1001: struct roff_node *
1002: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1003: {
1004: struct roff_node *n;
1005:
1006: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1007: roff_node_append(man, n);
1008: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1009: return n;
1.267 schwarze 1010: }
1011:
1.321 schwarze 1012: static void
1.346 schwarze 1013: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1014: {
1015: struct roff_node *n;
1.346 schwarze 1016: struct tbl_span *span;
1.267 schwarze 1017:
1018: if (man->macroset == MACROSET_MAN)
1.302 schwarze 1019: man_breakscope(man, ROFF_TS);
1.321 schwarze 1020: while ((span = tbl_span(tbl)) != NULL) {
1.346 schwarze 1021: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1022: n->span = span;
1023: roff_node_append(man, n);
1024: n->flags |= NODE_VALID | NODE_ENDED;
1025: man->next = ROFF_NEXT_SIBLING;
1026: }
1.266 schwarze 1027: }
1028:
1029: void
1030: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1031: {
1032:
1033: /* Adjust siblings. */
1034:
1035: if (n->prev)
1036: n->prev->next = n->next;
1037: if (n->next)
1038: n->next->prev = n->prev;
1039:
1040: /* Adjust parent. */
1041:
1042: if (n->parent != NULL) {
1043: if (n->parent->child == n)
1044: n->parent->child = n->next;
1045: if (n->parent->last == n)
1046: n->parent->last = n->prev;
1047: }
1048:
1049: /* Adjust parse point. */
1050:
1051: if (man == NULL)
1052: return;
1053: if (man->last == n) {
1054: if (n->prev == NULL) {
1055: man->last = n->parent;
1056: man->next = ROFF_NEXT_CHILD;
1057: } else {
1058: man->last = n->prev;
1059: man->next = ROFF_NEXT_SIBLING;
1060: }
1061: }
1062: if (man->first == n)
1063: man->first = NULL;
1.344 schwarze 1064: }
1065:
1066: void
1067: roff_node_relink(struct roff_man *man, struct roff_node *n)
1068: {
1069: roff_node_unlink(man, n);
1070: n->prev = n->next = NULL;
1071: roff_node_append(man, n);
1.266 schwarze 1072: }
1073:
1074: void
1075: roff_node_free(struct roff_node *n)
1076: {
1077:
1078: if (n->args != NULL)
1079: mdoc_argv_free(n->args);
1080: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1081: free(n->norm);
1.347 schwarze 1082: eqn_box_free(n->eqn);
1.266 schwarze 1083: free(n->string);
1084: free(n);
1085: }
1086:
1087: void
1088: roff_node_delete(struct roff_man *man, struct roff_node *n)
1089: {
1090:
1091: while (n->child != NULL)
1092: roff_node_delete(man, n->child);
1093: roff_node_unlink(man, n);
1094: roff_node_free(n);
1.269 schwarze 1095: }
1096:
1097: void
1098: deroff(char **dest, const struct roff_node *n)
1099: {
1100: char *cp;
1101: size_t sz;
1102:
1103: if (n->type != ROFFT_TEXT) {
1104: for (n = n->child; n != NULL; n = n->next)
1105: deroff(dest, n);
1106: return;
1107: }
1108:
1.288 schwarze 1109: /* Skip leading whitespace. */
1.269 schwarze 1110:
1.288 schwarze 1111: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1112: if (cp[0] == '\\' && cp[1] != '\0' &&
1113: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1114: cp++;
1.288 schwarze 1115: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1116: break;
1117: }
1118:
1.289 schwarze 1119: /* Skip trailing backslash. */
1120:
1121: sz = strlen(cp);
1.290 schwarze 1122: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1123: sz--;
1124:
1.269 schwarze 1125: /* Skip trailing whitespace. */
1126:
1.289 schwarze 1127: for (; sz; sz--)
1.269 schwarze 1128: if ( ! isspace((unsigned char)cp[sz-1]))
1129: break;
1130:
1131: /* Skip empty strings. */
1132:
1133: if (sz == 0)
1134: return;
1135:
1136: if (*dest == NULL) {
1137: *dest = mandoc_strndup(cp, sz);
1138: return;
1139: }
1140:
1141: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1142: free(*dest);
1143: *dest = cp;
1.266 schwarze 1144: }
1145:
1146: /* --- main functions of the roff parser ---------------------------------- */
1147:
1.94 kristaps 1148: /*
1.206 schwarze 1149: * In the current line, expand escape sequences that tend to get
1150: * used in numerical expressions and conditional requests.
1151: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1152: */
1.340 schwarze 1153: static int
1.238 schwarze 1154: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1155: {
1.339 schwarze 1156: struct mctx *ctx; /* current macro call context */
1.208 schwarze 1157: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1158: struct roff_node *n; /* used for header comments */
1.205 schwarze 1159: const char *start; /* start of the string to process */
1.209 schwarze 1160: char *stesc; /* start of an escape sequence ('\\') */
1.328 schwarze 1161: char *ep; /* end of comment string */
1.108 schwarze 1162: const char *stnam; /* start of the name, after "[(*" */
1163: const char *cp; /* end of the name, e.g. before ']' */
1164: const char *res; /* the string to be substituted */
1.238 schwarze 1165: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1166: size_t maxl; /* expected length of the escape name */
1167: size_t naml; /* actual length of the escape name */
1.339 schwarze 1168: size_t asz; /* length of the replacement */
1169: size_t rsz; /* length of the rest of the string */
1.237 schwarze 1170: enum mandoc_esc esc; /* type of the escape sequence */
1171: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1172: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1173: int npos; /* position in numeric expression */
1.218 schwarze 1174: int arg_complete; /* argument not interrupted by eol */
1.339 schwarze 1175: int quote_args; /* true for \\$@, false for \\$* */
1.303 schwarze 1176: int done; /* no more input available */
1.315 schwarze 1177: int deftype; /* type of definition to paste */
1.323 schwarze 1178: int rcsid; /* kind of RCS id seen */
1.327 schwarze 1179: char sign; /* increment number register */
1.206 schwarze 1180: char term; /* character terminating the escape */
1.94 kristaps 1181:
1.303 schwarze 1182: /* Search forward for comments. */
1183:
1184: done = 0;
1185: start = buf->buf + pos;
1186: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1187: if (stesc[0] != r->escape || stesc[1] == '\0')
1188: continue;
1189: stesc++;
1190: if (*stesc != '"' && *stesc != '#')
1191: continue;
1.313 schwarze 1192:
1193: /* Comment found, look for RCS id. */
1194:
1.323 schwarze 1195: rcsid = 0;
1.313 schwarze 1196: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1197: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1198: cp += 8;
1199: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1200: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1201: cp += 7;
1202: }
1203: if (cp != NULL &&
1204: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1205: strchr(cp, '$') != NULL) {
1.323 schwarze 1206: if (r->man->meta.rcsids & rcsid)
1.314 schwarze 1207: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1208: ln, stesc + 1 - buf->buf, stesc + 1);
1.323 schwarze 1209: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1210: }
1.313 schwarze 1211:
1212: /* Handle trailing whitespace. */
1213:
1.328 schwarze 1214: ep = strchr(stesc--, '\0') - 1;
1215: if (*ep == '\n') {
1.303 schwarze 1216: done = 1;
1.328 schwarze 1217: ep--;
1.303 schwarze 1218: }
1.328 schwarze 1219: if (*ep == ' ' || *ep == '\t')
1.303 schwarze 1220: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1.328 schwarze 1221: ln, ep - buf->buf, NULL);
1222:
1223: /*
1224: * Save comments preceding the title macro
1225: * in the syntax tree.
1226: */
1227:
1228: if (r->format == 0) {
1229: while (*ep == ' ' || *ep == '\t')
1230: ep--;
1231: ep[1] = '\0';
1232: n = roff_node_alloc(r->man,
1233: ln, stesc + 1 - buf->buf,
1234: ROFFT_COMMENT, TOKEN_NONE);
1235: n->string = mandoc_strdup(stesc + 2);
1236: roff_node_append(r->man, n);
1237: n->flags |= NODE_VALID | NODE_ENDED;
1238: r->man->next = ROFF_NEXT_SIBLING;
1239: }
1240:
1.334 schwarze 1241: /* Line continuation with comment. */
1242:
1243: if (stesc[1] == '#') {
1244: *stesc = '\0';
1.340 schwarze 1245: return ROFF_IGN | ROFF_APPEND;
1.334 schwarze 1246: }
1247:
1248: /* Discard normal comments. */
1.328 schwarze 1249:
1.335 schwarze 1250: while (stesc > start && stesc[-1] == ' ' &&
1251: (stesc == start + 1 || stesc[-2] != '\\'))
1.303 schwarze 1252: stesc--;
1253: *stesc = '\0';
1254: break;
1255: }
1256: if (stesc == start)
1257: return ROFF_CONT;
1258: stesc--;
1259:
1260: /* Notice the end of the input. */
1261:
1262: if (*stesc == '\n') {
1263: *stesc-- = '\0';
1264: done = 1;
1265: }
1266:
1.170 schwarze 1267: expand_count = 0;
1.303 schwarze 1268: while (stesc >= start) {
1.170 schwarze 1269:
1.205 schwarze 1270: /* Search backwards for the next backslash. */
1271:
1.303 schwarze 1272: if (*stesc != r->escape) {
1273: if (*stesc == '\\') {
1274: *stesc = '\0';
1275: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1276: buf->buf, stesc + 1) + 1;
1277: start = nbuf + pos;
1278: stesc = nbuf + (stesc - buf->buf);
1279: free(buf->buf);
1280: buf->buf = nbuf;
1281: }
1282: stesc--;
1.205 schwarze 1283: continue;
1.303 schwarze 1284: }
1.205 schwarze 1285:
1286: /* If it is escaped, skip it. */
1287:
1288: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1289: if (*cp != r->escape)
1.205 schwarze 1290: break;
1291:
1.238 schwarze 1292: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1293: while (stesc > cp)
1294: *stesc-- = '\\';
1.205 schwarze 1295: continue;
1.303 schwarze 1296: } else if (stesc[1] != '\0') {
1297: *stesc = '\\';
1298: } else {
1299: *stesc-- = '\0';
1300: if (done)
1301: continue;
1302: else
1.340 schwarze 1303: return ROFF_IGN | ROFF_APPEND;
1.205 schwarze 1304: }
1.108 schwarze 1305:
1.206 schwarze 1306: /* Decide whether to expand or to check only. */
1.108 schwarze 1307:
1.206 schwarze 1308: term = '\0';
1.205 schwarze 1309: cp = stesc + 1;
1.181 schwarze 1310: switch (*cp) {
1.207 schwarze 1311: case '*':
1.339 schwarze 1312: case '$':
1.181 schwarze 1313: res = NULL;
1314: break;
1.207 schwarze 1315: case 'B':
1316: case 'w':
1.206 schwarze 1317: term = cp[1];
1318: /* FALLTHROUGH */
1.207 schwarze 1319: case 'n':
1.327 schwarze 1320: sign = cp[1];
1321: if (sign == '+' || sign == '-')
1322: cp++;
1.181 schwarze 1323: res = ubuf;
1324: break;
1325: default:
1.237 schwarze 1326: esc = mandoc_escape(&cp, &stnam, &inaml);
1327: if (esc == ESCAPE_ERROR ||
1328: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1329: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1330: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1331: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1332: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1333: stesc--;
1.205 schwarze 1334: continue;
1.152 kristaps 1335: }
1336:
1.205 schwarze 1337: if (EXPAND_LIMIT < ++expand_count) {
1338: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1339: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1340: return ROFF_IGN;
1.205 schwarze 1341: }
1.108 schwarze 1342:
1343: /*
1344: * The third character decides the length
1.181 schwarze 1345: * of the name of the string or register.
1.108 schwarze 1346: * Save a pointer to the name.
1347: */
1348:
1.238 schwarze 1349: if (term == '\0') {
1.206 schwarze 1350: switch (*++cp) {
1.207 schwarze 1351: case '\0':
1.206 schwarze 1352: maxl = 0;
1353: break;
1.207 schwarze 1354: case '(':
1.206 schwarze 1355: cp++;
1356: maxl = 2;
1357: break;
1.207 schwarze 1358: case '[':
1.206 schwarze 1359: cp++;
1360: term = ']';
1361: maxl = 0;
1362: break;
1363: default:
1364: maxl = 1;
1365: break;
1366: }
1367: } else {
1368: cp += 2;
1.94 kristaps 1369: maxl = 0;
1370: }
1.108 schwarze 1371: stnam = cp;
1.94 kristaps 1372:
1.108 schwarze 1373: /* Advance to the end of the name. */
1.94 kristaps 1374:
1.253 schwarze 1375: naml = 0;
1.218 schwarze 1376: arg_complete = 1;
1.253 schwarze 1377: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1378: if (*cp == '\0') {
1.219 schwarze 1379: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1380: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1381: arg_complete = 0;
1.206 schwarze 1382: break;
1.153 kristaps 1383: }
1.238 schwarze 1384: if (maxl == 0 && *cp == term) {
1.206 schwarze 1385: cp++;
1.253 schwarze 1386: break;
1387: }
1388: if (*cp++ != '\\' || stesc[1] != 'w') {
1389: naml++;
1390: continue;
1391: }
1392: switch (mandoc_escape(&cp, NULL, NULL)) {
1393: case ESCAPE_SPECIAL:
1394: case ESCAPE_UNICODE:
1395: case ESCAPE_NUMBERED:
1396: case ESCAPE_OVERSTRIKE:
1397: naml++;
1398: break;
1399: default:
1.94 kristaps 1400: break;
1.206 schwarze 1401: }
1.94 kristaps 1402: }
1403:
1.108 schwarze 1404: /*
1405: * Retrieve the replacement string; if it is
1406: * undefined, resume searching for escapes.
1407: */
1408:
1.206 schwarze 1409: switch (stesc[1]) {
1.207 schwarze 1410: case '*':
1.315 schwarze 1411: if (arg_complete) {
1412: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1413: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1414:
1415: /*
1416: * If not overriden, let \*(.T
1417: * through to the formatters.
1418: */
1419:
1420: if (res == NULL && naml == 2 &&
1421: stnam[0] == '.' && stnam[1] == 'T') {
1422: roff_setstrn(&r->strtab,
1423: ".T", 2, NULL, 0, 0);
1424: stesc--;
1425: continue;
1426: }
1.315 schwarze 1427: }
1.206 schwarze 1428: break;
1.339 schwarze 1429: case '$':
1430: if (r->mstackpos < 0) {
1431: mandoc_vmsg(MANDOCERR_ARG_UNDEF,
1432: r->parse, ln, (int)(stesc - buf->buf),
1433: "%.3s", stesc);
1434: break;
1435: }
1436: ctx = r->mstack + r->mstackpos;
1437: npos = stesc[2] - '1';
1438: if (npos >= 0 && npos <= 8) {
1439: res = npos < ctx->argc ?
1440: ctx->argv[npos] : "";
1441: break;
1442: }
1443: if (stesc[2] == '*')
1444: quote_args = 0;
1445: else if (stesc[2] == '@')
1446: quote_args = 1;
1447: else {
1448: mandoc_vmsg(MANDOCERR_ARG_NONUM,
1449: r->parse, ln, (int)(stesc - buf->buf),
1450: "%.3s", stesc);
1451: break;
1452: }
1453: asz = 0;
1454: for (npos = 0; npos < ctx->argc; npos++) {
1455: if (npos)
1456: asz++; /* blank */
1457: if (quote_args)
1458: asz += 2; /* quotes */
1459: asz += strlen(ctx->argv[npos]);
1460: }
1461: if (asz != 3) {
1462: rsz = buf->sz - (stesc - buf->buf) - 3;
1463: if (asz < 3)
1464: memmove(stesc + asz, stesc + 3, rsz);
1465: buf->sz += asz - 3;
1466: nbuf = mandoc_realloc(buf->buf, buf->sz);
1467: start = nbuf + pos;
1468: stesc = nbuf + (stesc - buf->buf);
1469: buf->buf = nbuf;
1470: if (asz > 3)
1471: memmove(stesc + asz, stesc + 3, rsz);
1472: }
1473: for (npos = 0; npos < ctx->argc; npos++) {
1474: if (npos)
1475: *stesc++ = ' ';
1476: if (quote_args)
1477: *stesc++ = '"';
1478: cp = ctx->argv[npos];
1479: while (*cp != '\0')
1480: *stesc++ = *cp++;
1481: if (quote_args)
1482: *stesc++ = '"';
1483: }
1484: continue;
1.207 schwarze 1485: case 'B':
1.206 schwarze 1486: npos = 0;
1.218 schwarze 1487: ubuf[0] = arg_complete &&
1.261 schwarze 1488: roff_evalnum(r, ln, stnam, &npos,
1489: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1490: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1491: ubuf[1] = '\0';
1492: break;
1.207 schwarze 1493: case 'n':
1.218 schwarze 1494: if (arg_complete)
1495: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1496: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1497: else
1498: ubuf[0] = '\0';
1.206 schwarze 1499: break;
1.207 schwarze 1500: case 'w':
1.218 schwarze 1501: /* use even incomplete args */
1.208 schwarze 1502: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1503: 24 * (int)naml);
1504: break;
1505: }
1.94 kristaps 1506:
1.238 schwarze 1507: if (res == NULL) {
1.339 schwarze 1508: if (stesc[1] == '*')
1509: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1510: r->parse, ln, (int)(stesc - buf->buf),
1511: "%.*s", (int)naml, stnam);
1.142 kristaps 1512: res = "";
1.246 schwarze 1513: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1514: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1515: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1516: return ROFF_IGN;
1.94 kristaps 1517: }
1518:
1.108 schwarze 1519: /* Replace the escape sequence by the string. */
1520:
1.209 schwarze 1521: *stesc = '\0';
1.238 schwarze 1522: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1523: buf->buf, res, cp) + 1;
1.94 kristaps 1524:
1.205 schwarze 1525: /* Prepare for the next replacement. */
1.94 kristaps 1526:
1.205 schwarze 1527: start = nbuf + pos;
1.238 schwarze 1528: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1529: free(buf->buf);
1530: buf->buf = nbuf;
1.154 kristaps 1531: }
1.277 schwarze 1532: return ROFF_CONT;
1.154 kristaps 1533: }
1534:
1535: /*
1.275 schwarze 1536: * Process text streams.
1.154 kristaps 1537: */
1.340 schwarze 1538: static int
1.305 schwarze 1539: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1540: {
1541: size_t sz;
1542: const char *start;
1.178 schwarze 1543: char *p;
1544: int isz;
1.154 kristaps 1545: enum mandoc_esc esc;
1546:
1.275 schwarze 1547: /* Spring the input line trap. */
1548:
1549: if (roffit_lines == 1) {
1550: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1551: free(buf->buf);
1552: buf->buf = p;
1553: buf->sz = isz + 1;
1554: *offs = 0;
1555: free(roffit_macro);
1556: roffit_lines = 0;
1.277 schwarze 1557: return ROFF_REPARSE;
1.275 schwarze 1558: } else if (roffit_lines > 1)
1559: --roffit_lines;
1560:
1.305 schwarze 1561: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1562: if (roffce_lines < 1) {
1563: r->man->last = roffce_node;
1564: r->man->next = ROFF_NEXT_SIBLING;
1565: roffce_lines = 0;
1566: roffce_node = NULL;
1567: } else
1568: roffce_lines--;
1569: }
1570:
1.275 schwarze 1571: /* Convert all breakable hyphens into ASCII_HYPH. */
1572:
1.238 schwarze 1573: start = p = buf->buf + pos;
1.154 kristaps 1574:
1.238 schwarze 1575: while (*p != '\0') {
1.154 kristaps 1576: sz = strcspn(p, "-\\");
1577: p += sz;
1578:
1.238 schwarze 1579: if (*p == '\0')
1.159 kristaps 1580: break;
1581:
1.238 schwarze 1582: if (*p == '\\') {
1.154 kristaps 1583: /* Skip over escapes. */
1584: p++;
1.189 schwarze 1585: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1586: if (esc == ESCAPE_ERROR)
1.154 kristaps 1587: break;
1.264 schwarze 1588: while (*p == '-')
1589: p++;
1.155 kristaps 1590: continue;
1.159 kristaps 1591: } else if (p == start) {
1.158 kristaps 1592: p++;
1.155 kristaps 1593: continue;
1.158 kristaps 1594: }
1.155 kristaps 1595:
1.171 schwarze 1596: if (isalpha((unsigned char)p[-1]) &&
1597: isalpha((unsigned char)p[1]))
1.155 kristaps 1598: *p = ASCII_HYPH;
1599: p++;
1.94 kristaps 1600: }
1.277 schwarze 1601: return ROFF_CONT;
1.94 kristaps 1602: }
1603:
1.340 schwarze 1604: int
1.238 schwarze 1605: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1606: {
1.294 schwarze 1607: enum roff_tok t;
1.340 schwarze 1608: int e;
1.238 schwarze 1609: int pos; /* parse point */
1.243 schwarze 1610: int spos; /* saved parse point for messages */
1.238 schwarze 1611: int ppos; /* original offset in buf->buf */
1612: int ctl; /* macro line (boolean) */
1613:
1614: ppos = pos = *offs;
1.79 kristaps 1615:
1.230 schwarze 1616: /* Handle in-line equation delimiters. */
1617:
1.236 schwarze 1618: if (r->tbl == NULL &&
1619: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1620: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1621: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1622: if (e == ROFF_REPARSE)
1.277 schwarze 1623: return e;
1.230 schwarze 1624: assert(e == ROFF_CONT);
1625: }
1626:
1627: /* Expand some escape sequences. */
1.94 kristaps 1628:
1.238 schwarze 1629: e = roff_res(r, buf, ln, pos);
1.340 schwarze 1630: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1631: return e;
1.238 schwarze 1632: assert(e == ROFF_CONT);
1.94 kristaps 1633:
1.238 schwarze 1634: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1635:
1.94 kristaps 1636: /*
1.79 kristaps 1637: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1638: * text through the macro's filter.
1639: * Equations process all content themselves.
1640: * Tables process almost all content themselves, but we want
1641: * to warn about macros before passing it there.
1.79 kristaps 1642: */
1.74 kristaps 1643:
1.252 schwarze 1644: if (r->last != NULL && ! ctl) {
1.78 kristaps 1645: t = r->last->tok;
1.238 schwarze 1646: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1647: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1648: return e;
1.340 schwarze 1649: e &= ~ROFF_MASK;
1650: } else
1651: e = ROFF_IGN;
1.319 schwarze 1652: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1653: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1654: return e;
1.319 schwarze 1655: }
1.321 schwarze 1656: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1657: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1658: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1659: return e;
1.321 schwarze 1660: }
1.252 schwarze 1661: if ( ! ctl)
1.340 schwarze 1662: return roff_parsetext(r, buf, pos, offs) | e;
1.228 schwarze 1663:
1664: /* Skip empty request lines. */
1665:
1.238 schwarze 1666: if (buf->buf[pos] == '"') {
1.228 schwarze 1667: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1668: ln, pos, NULL);
1.277 schwarze 1669: return ROFF_IGN;
1.238 schwarze 1670: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1671: return ROFF_IGN;
1.67 kristaps 1672:
1.79 kristaps 1673: /*
1674: * If a scope is open, go to the child handler for that macro,
1675: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1676: * Don't do so if an equation is open.
1.79 kristaps 1677: */
1.78 kristaps 1678:
1.79 kristaps 1679: if (r->last) {
1680: t = r->last->tok;
1.277 schwarze 1681: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1682: }
1.78 kristaps 1683:
1.243 schwarze 1684: /* No scope is open. This is a new request or macro. */
1685:
1686: spos = pos;
1687: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1688:
1689: /* Tables ignore most macros. */
1690:
1.308 schwarze 1691: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1692: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.243 schwarze 1693: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1694: ln, pos, buf->buf + spos);
1.308 schwarze 1695: if (t != TOKEN_NONE)
1.277 schwarze 1696: return ROFF_IGN;
1.257 schwarze 1697: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1698: pos++;
1.291 schwarze 1699: while (buf->buf[pos] == ' ')
1.257 schwarze 1700: pos++;
1.321 schwarze 1701: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1702: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1703: return ROFF_IGN;
1.243 schwarze 1704: }
1705:
1.305 schwarze 1706: /* For now, let high level macros abort .ce mode. */
1707:
1708: if (ctl && roffce_node != NULL &&
1.324 schwarze 1709: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1710: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1711: r->man->last = roffce_node;
1712: r->man->next = ROFF_NEXT_SIBLING;
1713: roffce_lines = 0;
1714: roffce_node = NULL;
1715: }
1716:
1.79 kristaps 1717: /*
1.243 schwarze 1718: * This is neither a roff request nor a user-defined macro.
1719: * Let the standard macro set parsers handle it.
1.79 kristaps 1720: */
1.67 kristaps 1721:
1.294 schwarze 1722: if (t == TOKEN_NONE)
1.277 schwarze 1723: return ROFF_CONT;
1.243 schwarze 1724:
1725: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1726:
1.296 schwarze 1727: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1728: }
1729:
1.339 schwarze 1730: /*
1731: * Internal interface function to tell the roff parser that execution
1732: * of the current macro ended. This is required because macro
1733: * definitions usually do not end with a .return request.
1734: */
1735: void
1736: roff_userret(struct roff *r)
1737: {
1738: struct mctx *ctx;
1739: int i;
1740:
1741: assert(r->mstackpos >= 0);
1742: ctx = r->mstack + r->mstackpos;
1743: for (i = 0; i < ctx->argc; i++)
1744: free(ctx->argv[i]);
1745: ctx->argc = 0;
1746: r->mstackpos--;
1747: }
1748:
1.117 kristaps 1749: void
1.74 kristaps 1750: roff_endparse(struct roff *r)
1751: {
1.321 schwarze 1752: if (r->last != NULL)
1.221 schwarze 1753: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1754: r->last->line, r->last->col,
1.295 schwarze 1755: roff_name[r->last->tok]);
1.117 kristaps 1756:
1.321 schwarze 1757: if (r->eqn != NULL) {
1.221 schwarze 1758: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.319 schwarze 1759: r->eqn->node->line, r->eqn->node->pos, "EQ");
1760: eqn_parse(r->eqn);
1761: r->eqn = NULL;
1.125 kristaps 1762: }
1763:
1.321 schwarze 1764: if (r->tbl != NULL) {
1.346 schwarze 1765: tbl_end(r->tbl, 1);
1.321 schwarze 1766: r->tbl = NULL;
1.117 kristaps 1767: }
1.67 kristaps 1768: }
1769:
1770: /*
1771: * Parse a roff node's type from the input buffer. This must be in the
1772: * form of ".foo xxx" in the usual way.
1773: */
1.294 schwarze 1774: static enum roff_tok
1.214 schwarze 1775: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1776: {
1.214 schwarze 1777: char *cp;
1.106 kristaps 1778: const char *mac;
1779: size_t maclen;
1.315 schwarze 1780: int deftype;
1.294 schwarze 1781: enum roff_tok t;
1.67 kristaps 1782:
1.214 schwarze 1783: cp = buf + *pos;
1784:
1785: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1786: return TOKEN_NONE;
1.67 kristaps 1787:
1.214 schwarze 1788: mac = cp;
1789: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1790:
1.315 schwarze 1791: deftype = ROFFDEF_USER | ROFFDEF_REN;
1792: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1793: switch (deftype) {
1794: case ROFFDEF_USER:
1795: t = ROFF_USERDEF;
1796: break;
1797: case ROFFDEF_REN:
1798: t = ROFF_RENAMED;
1799: break;
1800: default:
1801: t = roffhash_find(r->reqtab, mac, maclen);
1802: break;
1803: }
1.294 schwarze 1804: if (t != TOKEN_NONE)
1.214 schwarze 1805: *pos = cp - buf;
1.325 schwarze 1806: else if (deftype == ROFFDEF_UNDEF) {
1807: /* Using an undefined macro defines it to be empty. */
1808: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1809: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1810: }
1.277 schwarze 1811: return t;
1.67 kristaps 1812: }
1813:
1.266 schwarze 1814: /* --- handling of request blocks ----------------------------------------- */
1815:
1.340 schwarze 1816: static int
1.76 kristaps 1817: roff_cblock(ROFF_ARGS)
1.67 kristaps 1818: {
1819:
1.79 kristaps 1820: /*
1821: * A block-close `..' should only be invoked as a child of an
1822: * ignore macro, otherwise raise a warning and just ignore it.
1823: */
1824:
1.238 schwarze 1825: if (r->last == NULL) {
1.221 schwarze 1826: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1827: ln, ppos, "..");
1.277 schwarze 1828: return ROFF_IGN;
1.76 kristaps 1829: }
1.67 kristaps 1830:
1.81 kristaps 1831: switch (r->last->tok) {
1.207 schwarze 1832: case ROFF_am:
1.220 schwarze 1833: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1834: case ROFF_ami:
1835: case ROFF_de:
1.108 schwarze 1836: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1837: case ROFF_dei:
1838: case ROFF_ig:
1.81 kristaps 1839: break;
1840: default:
1.221 schwarze 1841: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1842: ln, ppos, "..");
1.277 schwarze 1843: return ROFF_IGN;
1.76 kristaps 1844: }
1.67 kristaps 1845:
1.238 schwarze 1846: if (buf->buf[pos] != '\0')
1.217 schwarze 1847: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1848: ".. %s", buf->buf + pos);
1.71 kristaps 1849:
1850: roffnode_pop(r);
1.76 kristaps 1851: roffnode_cleanscope(r);
1.277 schwarze 1852: return ROFF_IGN;
1.71 kristaps 1853:
1.67 kristaps 1854: }
1855:
1.340 schwarze 1856: static int
1.76 kristaps 1857: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1858: {
1.340 schwarze 1859: int inloop;
1.67 kristaps 1860:
1.340 schwarze 1861: inloop = 0;
1862: while (r->last != NULL) {
1.173 schwarze 1863: if (--r->last->endspan != 0)
1.76 kristaps 1864: break;
1.340 schwarze 1865: inloop += roffnode_pop(r);
1.76 kristaps 1866: }
1.340 schwarze 1867: return inloop;
1.67 kristaps 1868: }
1869:
1.340 schwarze 1870: static int
1.195 schwarze 1871: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1872: {
1.76 kristaps 1873: if (NULL == r->last) {
1.221 schwarze 1874: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1875: ln, ppos, "\\}");
1.340 schwarze 1876: return 0;
1.76 kristaps 1877: }
1878:
1.82 kristaps 1879: switch (r->last->tok) {
1.207 schwarze 1880: case ROFF_el:
1881: case ROFF_ie:
1882: case ROFF_if:
1.340 schwarze 1883: case ROFF_while:
1.82 kristaps 1884: break;
1885: default:
1.221 schwarze 1886: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1887: ln, ppos, "\\}");
1.340 schwarze 1888: return 0;
1.75 kristaps 1889: }
1890:
1.76 kristaps 1891: if (r->last->endspan > -1) {
1.221 schwarze 1892: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1893: ln, ppos, "\\}");
1.340 schwarze 1894: return 0;
1.76 kristaps 1895: }
1896:
1.340 schwarze 1897: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 1898: }
1899:
1.340 schwarze 1900: static int
1.80 kristaps 1901: roff_block(ROFF_ARGS)
1.76 kristaps 1902: {
1.315 schwarze 1903: const char *name, *value;
1904: char *call, *cp, *iname, *rname;
1905: size_t csz, namesz, rsz;
1906: int deftype;
1.106 kristaps 1907:
1.220 schwarze 1908: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1909:
1.238 schwarze 1910: if (tok == ROFF_de1)
1.220 schwarze 1911: tok = ROFF_de;
1.251 schwarze 1912: else if (tok == ROFF_dei1)
1913: tok = ROFF_dei;
1.238 schwarze 1914: else if (tok == ROFF_am1)
1.220 schwarze 1915: tok = ROFF_am;
1.251 schwarze 1916: else if (tok == ROFF_ami1)
1917: tok = ROFF_ami;
1.220 schwarze 1918:
1919: /* Parse the macro name argument. */
1920:
1.238 schwarze 1921: cp = buf->buf + pos;
1922: if (tok == ROFF_ig) {
1.220 schwarze 1923: iname = NULL;
1924: namesz = 0;
1925: } else {
1926: iname = cp;
1927: namesz = roff_getname(r, &cp, ln, ppos);
1928: iname[namesz] = '\0';
1929: }
1.107 kristaps 1930:
1.220 schwarze 1931: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1932:
1.238 schwarze 1933: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1934: deftype = ROFFDEF_USER;
1935: name = roff_getstrn(r, iname, namesz, &deftype);
1936: if (name == NULL) {
1.220 schwarze 1937: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1938: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1939: "%.*s", (int)namesz, iname);
1940: namesz = 0;
1941: } else
1942: namesz = strlen(name);
1943: } else
1944: name = iname;
1.107 kristaps 1945:
1.238 schwarze 1946: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1947: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1948: ln, ppos, roff_name[tok]);
1.277 schwarze 1949: return ROFF_IGN;
1.220 schwarze 1950: }
1.80 kristaps 1951:
1.106 kristaps 1952: roffnode_push(r, tok, name, ln, ppos);
1953:
1954: /*
1955: * At the beginning of a `de' macro, clear the existing string
1956: * with the same name, if there is one. New content will be
1.193 schwarze 1957: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1958: */
1.107 kristaps 1959:
1.311 schwarze 1960: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 1961: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 1962: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 1963: } else if (tok == ROFF_am || tok == ROFF_ami) {
1964: deftype = ROFFDEF_ANY;
1965: value = roff_getstrn(r, iname, namesz, &deftype);
1966: switch (deftype) { /* Before appending, ... */
1967: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1968: roff_setstrn(&r->strtab, name, namesz,
1969: value, strlen(value), 0);
1970: break;
1971: case ROFFDEF_REN: /* call original standard macro. */
1972: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1973: (int)strlen(value), value);
1974: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1975: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1976: free(call);
1977: break;
1978: case ROFFDEF_STD: /* rename and call standard macro. */
1979: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1980: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1981: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1982: (int)rsz, rname);
1983: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1984: free(call);
1985: free(rname);
1986: break;
1987: default:
1988: break;
1989: }
1.311 schwarze 1990: }
1.76 kristaps 1991:
1.238 schwarze 1992: if (*cp == '\0')
1.277 schwarze 1993: return ROFF_IGN;
1.78 kristaps 1994:
1.220 schwarze 1995: /* Get the custom end marker. */
1.107 kristaps 1996:
1.220 schwarze 1997: iname = cp;
1.213 schwarze 1998: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1999:
2000: /* Resolve the end marker if it is indirect. */
2001:
1.238 schwarze 2002: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2003: deftype = ROFFDEF_USER;
2004: name = roff_getstrn(r, iname, namesz, &deftype);
2005: if (name == NULL) {
1.220 schwarze 2006: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 2007: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 2008: "%.*s", (int)namesz, iname);
2009: namesz = 0;
2010: } else
2011: namesz = strlen(name);
2012: } else
2013: name = iname;
2014:
1.213 schwarze 2015: if (namesz)
2016: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2017:
1.238 schwarze 2018: if (*cp != '\0')
1.217 schwarze 2019: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 2020: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2021:
1.277 schwarze 2022: return ROFF_IGN;
1.78 kristaps 2023: }
2024:
1.340 schwarze 2025: static int
1.80 kristaps 2026: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2027: {
1.294 schwarze 2028: enum roff_tok t;
1.79 kristaps 2029: int i, j;
2030:
2031: /*
2032: * First check whether a custom macro exists at this level. If
2033: * it does, then check against it. This is some of groff's
2034: * stranger behaviours. If we encountered a custom end-scope
2035: * tag and that tag also happens to be a "real" macro, then we
2036: * need to try interpreting it again as a real macro. If it's
2037: * not, then return ignore. Else continue.
2038: */
2039:
2040: if (r->last->end) {
1.130 kristaps 2041: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2042: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2043: break;
2044:
1.238 schwarze 2045: if (r->last->end[j] == '\0' &&
2046: (buf->buf[i] == '\0' ||
2047: buf->buf[i] == ' ' ||
2048: buf->buf[i] == '\t')) {
1.79 kristaps 2049: roffnode_pop(r);
2050: roffnode_cleanscope(r);
2051:
1.238 schwarze 2052: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2053: i++;
2054:
2055: pos = i;
1.238 schwarze 2056: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2057: TOKEN_NONE)
1.277 schwarze 2058: return ROFF_RERUN;
2059: return ROFF_IGN;
1.79 kristaps 2060: }
2061: }
2062:
2063: /*
2064: * If we have no custom end-query or lookup failed, then try
2065: * pulling it out of the hashtable.
2066: */
2067:
1.238 schwarze 2068: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 2069:
1.238 schwarze 2070: if (t != ROFF_cblock) {
2071: if (tok != ROFF_ig)
2072: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 2073: return ROFF_IGN;
1.106 kristaps 2074: }
1.79 kristaps 2075:
1.277 schwarze 2076: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2077: }
2078:
1.340 schwarze 2079: static int
1.80 kristaps 2080: roff_block_text(ROFF_ARGS)
1.78 kristaps 2081: {
2082:
1.238 schwarze 2083: if (tok != ROFF_ig)
2084: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2085:
1.277 schwarze 2086: return ROFF_IGN;
1.78 kristaps 2087: }
2088:
1.340 schwarze 2089: static int
1.82 kristaps 2090: roff_cond_sub(ROFF_ARGS)
2091: {
1.340 schwarze 2092: char *ep;
2093: int endloop, irc, rr;
1.294 schwarze 2094: enum roff_tok t;
1.82 kristaps 2095:
1.340 schwarze 2096: irc = ROFF_IGN;
1.82 kristaps 2097: rr = r->last->rule;
1.340 schwarze 2098: endloop = tok != ROFF_while ? ROFF_IGN :
2099: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2100: if (roffnode_cleanscope(r))
2101: irc |= endloop;
1.144 kristaps 2102:
1.196 schwarze 2103: /*
2104: * If `\}' occurs on a macro line without a preceding macro,
2105: * drop the line completely.
2106: */
2107:
1.238 schwarze 2108: ep = buf->buf + pos;
2109: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 2110: rr = 0;
1.196 schwarze 2111:
1.343 schwarze 2112: /*
2113: * The closing delimiter `\}' rewinds the conditional scope
2114: * but is otherwise ignored when interpreting the line.
2115: */
1.144 kristaps 2116:
1.238 schwarze 2117: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2118: switch (ep[1]) {
2119: case '}':
2120: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2121: if (roff_ccond(r, ln, ep - buf->buf))
2122: irc |= endloop;
1.318 schwarze 2123: break;
2124: case '\0':
2125: ++ep;
2126: break;
2127: default:
2128: ep += 2;
2129: break;
1.197 schwarze 2130: }
1.177 schwarze 2131: }
1.318 schwarze 2132:
2133: /*
2134: * Fully handle known macros when they are structurally
2135: * required or when the conditional evaluated to true.
2136: */
2137:
2138: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.340 schwarze 2139: irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
2140: (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
2141: rr ? ROFF_CONT : ROFF_IGN;
2142: return irc;
1.82 kristaps 2143: }
2144:
1.340 schwarze 2145: static int
1.82 kristaps 2146: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2147: {
1.140 kristaps 2148: char *ep;
1.340 schwarze 2149: int endloop, irc, rr;
1.82 kristaps 2150:
1.340 schwarze 2151: irc = ROFF_IGN;
1.82 kristaps 2152: rr = r->last->rule;
1.340 schwarze 2153: endloop = tok != ROFF_while ? ROFF_IGN :
2154: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2155: if (roffnode_cleanscope(r))
2156: irc |= endloop;
1.82 kristaps 2157:
1.343 schwarze 2158: /*
2159: * If `\}' occurs on a text line with neither preceding
2160: * nor following characters, drop the line completely.
2161: */
2162:
1.238 schwarze 2163: ep = buf->buf + pos;
1.343 schwarze 2164: if (strcmp(ep, "\\}") == 0)
2165: rr = 0;
2166:
2167: /*
2168: * The closing delimiter `\}' rewinds the conditional scope
2169: * but is otherwise ignored when interpreting the line.
2170: */
2171:
1.238 schwarze 2172: while ((ep = strchr(ep, '\\')) != NULL) {
1.343 schwarze 2173: switch (ep[1]) {
2174: case '}':
2175: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2176: if (roff_ccond(r, ln, ep - buf->buf))
1.340 schwarze 2177: irc |= endloop;
1.343 schwarze 2178: break;
2179: case '\0':
2180: ++ep;
2181: break;
2182: default:
2183: ep += 2;
2184: break;
1.197 schwarze 2185: }
1.78 kristaps 2186: }
1.340 schwarze 2187: if (rr)
2188: irc |= ROFF_CONT;
2189: return irc;
1.74 kristaps 2190: }
2191:
1.266 schwarze 2192: /* --- handling of numeric and conditional expressions -------------------- */
2193:
1.204 schwarze 2194: /*
2195: * Parse a single signed integer number. Stop at the first non-digit.
2196: * If there is at least one digit, return success and advance the
2197: * parse point, else return failure and let the parse point unchanged.
2198: * Ignore overflows, treat them just like the C language.
2199: */
1.184 schwarze 2200: static int
1.261 schwarze 2201: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2202: {
1.261 schwarze 2203: int myres, scaled, n, p;
1.206 schwarze 2204:
2205: if (NULL == res)
2206: res = &myres;
1.184 schwarze 2207:
2208: p = *pos;
2209: n = v[p] == '-';
1.261 schwarze 2210: if (n || v[p] == '+')
1.184 schwarze 2211: p++;
2212:
1.261 schwarze 2213: if (flags & ROFFNUM_WHITE)
2214: while (isspace((unsigned char)v[p]))
2215: p++;
2216:
1.184 schwarze 2217: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2218: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2219: if (p == *pos + n)
2220: return 0;
2221:
2222: if (n)
2223: *res = -*res;
2224:
1.254 schwarze 2225: /* Each number may be followed by one optional scaling unit. */
2226:
2227: switch (v[p]) {
2228: case 'f':
1.261 schwarze 2229: scaled = *res * 65536;
1.254 schwarze 2230: break;
2231: case 'i':
1.261 schwarze 2232: scaled = *res * 240;
1.254 schwarze 2233: break;
2234: case 'c':
1.261 schwarze 2235: scaled = *res * 240 / 2.54;
1.254 schwarze 2236: break;
2237: case 'v':
2238: case 'P':
1.261 schwarze 2239: scaled = *res * 40;
1.254 schwarze 2240: break;
2241: case 'm':
2242: case 'n':
1.261 schwarze 2243: scaled = *res * 24;
1.254 schwarze 2244: break;
2245: case 'p':
1.261 schwarze 2246: scaled = *res * 10 / 3;
1.254 schwarze 2247: break;
2248: case 'u':
1.261 schwarze 2249: scaled = *res;
1.254 schwarze 2250: break;
2251: case 'M':
1.261 schwarze 2252: scaled = *res * 6 / 25;
1.254 schwarze 2253: break;
2254: default:
1.261 schwarze 2255: scaled = *res;
1.254 schwarze 2256: p--;
2257: break;
2258: }
1.261 schwarze 2259: if (flags & ROFFNUM_SCALE)
2260: *res = scaled;
1.254 schwarze 2261:
2262: *pos = p + 1;
1.277 schwarze 2263: return 1;
1.184 schwarze 2264: }
2265:
1.198 schwarze 2266: /*
2267: * Evaluate a string comparison condition.
2268: * The first character is the delimiter.
2269: * Succeed if the string up to its second occurrence
2270: * matches the string up to its third occurence.
2271: * Advance the cursor after the third occurrence
2272: * or lacking that, to the end of the line.
2273: */
2274: static int
2275: roff_evalstrcond(const char *v, int *pos)
2276: {
2277: const char *s1, *s2, *s3;
2278: int match;
2279:
2280: match = 0;
2281: s1 = v + *pos; /* initial delimiter */
2282: s2 = s1 + 1; /* for scanning the first string */
2283: s3 = strchr(s2, *s1); /* for scanning the second string */
2284:
2285: if (NULL == s3) /* found no middle delimiter */
2286: goto out;
2287:
2288: while ('\0' != *++s3) {
2289: if (*s2 != *s3) { /* mismatch */
2290: s3 = strchr(s3, *s1);
2291: break;
2292: }
2293: if (*s3 == *s1) { /* found the final delimiter */
2294: match = 1;
2295: break;
2296: }
2297: s2++;
2298: }
2299:
2300: out:
2301: if (NULL == s3)
2302: s3 = strchr(s2, '\0');
1.242 schwarze 2303: else if (*s3 != '\0')
1.198 schwarze 2304: s3++;
2305: *pos = s3 - v;
1.277 schwarze 2306: return match;
1.198 schwarze 2307: }
2308:
1.204 schwarze 2309: /*
2310: * Evaluate an optionally negated single character, numerical,
2311: * or string condition.
2312: */
1.198 schwarze 2313: static int
1.271 schwarze 2314: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2315: {
1.336 schwarze 2316: const char *start, *end;
2317: char *cp, *name;
2318: size_t sz;
2319: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2320:
1.198 schwarze 2321: if ('!' == v[*pos]) {
2322: wanttrue = 0;
2323: (*pos)++;
2324: } else
2325: wanttrue = 1;
2326:
1.88 kristaps 2327: switch (v[*pos]) {
1.240 schwarze 2328: case '\0':
1.277 schwarze 2329: return 0;
1.207 schwarze 2330: case 'n':
2331: case 'o':
1.88 kristaps 2332: (*pos)++;
1.277 schwarze 2333: return wanttrue;
1.207 schwarze 2334: case 'e':
2335: case 't':
1.239 schwarze 2336: case 'v':
1.88 kristaps 2337: (*pos)++;
1.277 schwarze 2338: return !wanttrue;
1.336 schwarze 2339: case 'c':
2340: do {
2341: (*pos)++;
2342: } while (v[*pos] == ' ');
2343:
2344: /*
2345: * Quirk for groff compatibility:
2346: * The horizontal tab is neither available nor unavailable.
2347: */
2348:
2349: if (v[*pos] == '\t') {
2350: (*pos)++;
2351: return 0;
2352: }
2353:
2354: /* Printable ASCII characters are available. */
2355:
2356: if (v[*pos] != '\\') {
2357: (*pos)++;
2358: return wanttrue;
2359: }
2360:
2361: end = v + ++*pos;
2362: switch (mandoc_escape(&end, &start, &len)) {
2363: case ESCAPE_SPECIAL:
2364: istrue = mchars_spec2cp(start, len) != -1;
2365: break;
2366: case ESCAPE_UNICODE:
2367: istrue = 1;
2368: break;
2369: case ESCAPE_NUMBERED:
2370: istrue = mchars_num2char(start, len) != -1;
2371: break;
2372: default:
2373: istrue = !wanttrue;
2374: break;
2375: }
2376: *pos = end - v;
2377: return istrue == wanttrue;
1.310 schwarze 2378: case 'd':
1.271 schwarze 2379: case 'r':
1.310 schwarze 2380: cp = v + *pos + 1;
2381: while (*cp == ' ')
2382: cp++;
2383: name = cp;
2384: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2385: if (sz == 0)
2386: istrue = 0;
2387: else if (v[*pos] == 'r')
2388: istrue = roff_hasregn(r, name, sz);
2389: else {
2390: deftype = ROFFDEF_ANY;
2391: roff_getstrn(r, name, sz, &deftype);
2392: istrue = !!deftype;
2393: }
1.271 schwarze 2394: *pos = cp - v;
1.310 schwarze 2395: return istrue == wanttrue;
1.88 kristaps 2396: default:
2397: break;
2398: }
2399:
1.241 schwarze 2400: savepos = *pos;
1.261 schwarze 2401: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2402: return (number > 0) == wanttrue;
1.241 schwarze 2403: else if (*pos == savepos)
1.277 schwarze 2404: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2405: else
1.277 schwarze 2406: return 0;
1.88 kristaps 2407: }
2408:
1.340 schwarze 2409: static int
1.103 kristaps 2410: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2411: {
1.123 schwarze 2412:
1.277 schwarze 2413: return ROFF_IGN;
1.89 kristaps 2414: }
2415:
1.340 schwarze 2416: static int
1.251 schwarze 2417: roff_insec(ROFF_ARGS)
2418: {
2419:
2420: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2421: ln, ppos, roff_name[tok]);
1.277 schwarze 2422: return ROFF_IGN;
1.251 schwarze 2423: }
2424:
1.340 schwarze 2425: static int
1.251 schwarze 2426: roff_unsupp(ROFF_ARGS)
2427: {
2428:
2429: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2430: ln, ppos, roff_name[tok]);
1.277 schwarze 2431: return ROFF_IGN;
1.251 schwarze 2432: }
2433:
1.340 schwarze 2434: static int
1.82 kristaps 2435: roff_cond(ROFF_ARGS)
1.74 kristaps 2436: {
1.340 schwarze 2437: int irc;
1.173 schwarze 2438:
2439: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2440:
1.207 schwarze 2441: /*
1.134 kristaps 2442: * An `.el' has no conditional body: it will consume the value
2443: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2444: * defaults to DENY.
1.134 kristaps 2445: *
2446: * If we're not an `el', however, then evaluate the conditional.
2447: */
1.133 kristaps 2448:
1.238 schwarze 2449: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2450: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2451: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2452:
1.134 kristaps 2453: /*
2454: * An if-else will put the NEGATION of the current evaluated
2455: * conditional into the stack of rules.
2456: */
2457:
1.238 schwarze 2458: if (tok == ROFF_ie) {
1.223 schwarze 2459: if (r->rstackpos + 1 == r->rstacksz) {
2460: r->rstacksz += 16;
2461: r->rstack = mandoc_reallocarray(r->rstack,
2462: r->rstacksz, sizeof(int));
1.134 kristaps 2463: }
1.198 schwarze 2464: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2465: }
1.88 kristaps 2466:
2467: /* If the parent has false as its rule, then so do we. */
2468:
1.198 schwarze 2469: if (r->last->parent && !r->last->parent->rule)
2470: r->last->rule = 0;
1.88 kristaps 2471:
2472: /*
1.173 schwarze 2473: * Determine scope.
2474: * If there is nothing on the line after the conditional,
2475: * not even whitespace, use next-line scope.
1.340 schwarze 2476: * Except that .while does not support next-line scope.
1.88 kristaps 2477: */
1.74 kristaps 2478:
1.340 schwarze 2479: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2480: r->last->endspan = 2;
2481: goto out;
2482: }
2483:
1.238 schwarze 2484: while (buf->buf[pos] == ' ')
1.173 schwarze 2485: pos++;
2486:
2487: /* An opening brace requests multiline scope. */
1.75 kristaps 2488:
1.238 schwarze 2489: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2490: r->last->endspan = -1;
2491: pos += 2;
1.272 schwarze 2492: while (buf->buf[pos] == ' ')
2493: pos++;
1.173 schwarze 2494: goto out;
1.207 schwarze 2495: }
1.74 kristaps 2496:
1.77 kristaps 2497: /*
1.173 schwarze 2498: * Anything else following the conditional causes
2499: * single-line scope. Warn if the scope contains
2500: * nothing but trailing whitespace.
1.77 kristaps 2501: */
2502:
1.238 schwarze 2503: if (buf->buf[pos] == '\0')
1.216 schwarze 2504: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2505: ln, ppos, roff_name[tok]);
1.77 kristaps 2506:
1.173 schwarze 2507: r->last->endspan = 1;
1.74 kristaps 2508:
1.173 schwarze 2509: out:
1.75 kristaps 2510: *offs = pos;
1.340 schwarze 2511: irc = ROFF_RERUN;
2512: if (tok == ROFF_while)
2513: irc |= ROFF_WHILE;
2514: return irc;
1.83 schwarze 2515: }
2516:
1.340 schwarze 2517: static int
1.92 schwarze 2518: roff_ds(ROFF_ARGS)
2519: {
1.212 schwarze 2520: char *string;
2521: const char *name;
2522: size_t namesz;
1.96 kristaps 2523:
1.251 schwarze 2524: /* Ignore groff compatibility mode for now. */
2525:
2526: if (tok == ROFF_ds1)
2527: tok = ROFF_ds;
2528: else if (tok == ROFF_as1)
2529: tok = ROFF_as;
2530:
1.96 kristaps 2531: /*
1.212 schwarze 2532: * The first word is the name of the string.
2533: * If it is empty or terminated by an escape sequence,
2534: * abort the `ds' request without defining anything.
1.96 kristaps 2535: */
1.92 schwarze 2536:
1.238 schwarze 2537: name = string = buf->buf + pos;
2538: if (*name == '\0')
1.277 schwarze 2539: return ROFF_IGN;
1.92 schwarze 2540:
1.212 schwarze 2541: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2542: if (name[namesz] == '\\')
1.277 schwarze 2543: return ROFF_IGN;
1.212 schwarze 2544:
2545: /* Read past the initial double-quote, if any. */
1.238 schwarze 2546: if (*string == '"')
1.92 schwarze 2547: string++;
2548:
1.96 kristaps 2549: /* The rest is the value. */
1.212 schwarze 2550: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2551: ROFF_as == tok);
1.311 schwarze 2552: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2553: return ROFF_IGN;
1.92 schwarze 2554: }
2555:
1.204 schwarze 2556: /*
2557: * Parse a single operator, one or two characters long.
2558: * If the operator is recognized, return success and advance the
2559: * parse point, else return failure and let the parse point unchanged.
2560: */
2561: static int
2562: roff_getop(const char *v, int *pos, char *res)
2563: {
2564:
2565: *res = v[*pos];
2566:
2567: switch (*res) {
1.207 schwarze 2568: case '+':
2569: case '-':
2570: case '*':
2571: case '/':
2572: case '%':
2573: case '&':
2574: case ':':
1.204 schwarze 2575: break;
2576: case '<':
2577: switch (v[*pos + 1]) {
1.207 schwarze 2578: case '=':
1.204 schwarze 2579: *res = 'l';
2580: (*pos)++;
2581: break;
1.207 schwarze 2582: case '>':
1.204 schwarze 2583: *res = '!';
2584: (*pos)++;
2585: break;
1.207 schwarze 2586: case '?':
1.204 schwarze 2587: *res = 'i';
2588: (*pos)++;
2589: break;
2590: default:
2591: break;
2592: }
2593: break;
2594: case '>':
2595: switch (v[*pos + 1]) {
1.207 schwarze 2596: case '=':
1.204 schwarze 2597: *res = 'g';
2598: (*pos)++;
2599: break;
1.207 schwarze 2600: case '?':
1.204 schwarze 2601: *res = 'a';
2602: (*pos)++;
2603: break;
2604: default:
2605: break;
2606: }
2607: break;
2608: case '=':
2609: if ('=' == v[*pos + 1])
2610: (*pos)++;
2611: break;
2612: default:
1.277 schwarze 2613: return 0;
1.204 schwarze 2614: }
2615: (*pos)++;
2616:
1.277 schwarze 2617: return *res;
1.204 schwarze 2618: }
2619:
2620: /*
2621: * Evaluate either a parenthesized numeric expression
2622: * or a single signed integer number.
2623: */
2624: static int
1.235 schwarze 2625: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2626: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2627: {
2628:
2629: if ('(' != v[*pos])
1.277 schwarze 2630: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2631:
2632: (*pos)++;
1.261 schwarze 2633: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2634: return 0;
1.204 schwarze 2635:
1.206 schwarze 2636: /*
2637: * Omission of the closing parenthesis
2638: * is an error in validation mode,
2639: * but ignored in evaluation mode.
2640: */
2641:
1.204 schwarze 2642: if (')' == v[*pos])
2643: (*pos)++;
1.206 schwarze 2644: else if (NULL == res)
1.277 schwarze 2645: return 0;
1.204 schwarze 2646:
1.277 schwarze 2647: return 1;
1.204 schwarze 2648: }
2649:
2650: /*
2651: * Evaluate a complete numeric expression.
2652: * Proceed left to right, there is no concept of precedence.
2653: */
2654: static int
1.235 schwarze 2655: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2656: int *pos, int *res, int flags)
1.204 schwarze 2657: {
2658: int mypos, operand2;
2659: char operator;
2660:
2661: if (NULL == pos) {
2662: mypos = 0;
2663: pos = &mypos;
2664: }
2665:
1.261 schwarze 2666: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2667: while (isspace((unsigned char)v[*pos]))
2668: (*pos)++;
2669:
1.261 schwarze 2670: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2671: return 0;
1.204 schwarze 2672:
2673: while (1) {
1.261 schwarze 2674: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2675: while (isspace((unsigned char)v[*pos]))
2676: (*pos)++;
2677:
2678: if ( ! roff_getop(v, pos, &operator))
2679: break;
2680:
1.261 schwarze 2681: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2682: while (isspace((unsigned char)v[*pos]))
2683: (*pos)++;
2684:
1.261 schwarze 2685: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2686: return 0;
1.204 schwarze 2687:
1.261 schwarze 2688: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2689: while (isspace((unsigned char)v[*pos]))
2690: (*pos)++;
1.206 schwarze 2691:
2692: if (NULL == res)
2693: continue;
1.204 schwarze 2694:
2695: switch (operator) {
1.207 schwarze 2696: case '+':
1.204 schwarze 2697: *res += operand2;
2698: break;
1.207 schwarze 2699: case '-':
1.204 schwarze 2700: *res -= operand2;
2701: break;
1.207 schwarze 2702: case '*':
1.204 schwarze 2703: *res *= operand2;
2704: break;
1.207 schwarze 2705: case '/':
1.244 schwarze 2706: if (operand2 == 0) {
1.235 schwarze 2707: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2708: r->parse, ln, *pos, v);
2709: *res = 0;
2710: break;
2711: }
1.204 schwarze 2712: *res /= operand2;
2713: break;
1.207 schwarze 2714: case '%':
1.244 schwarze 2715: if (operand2 == 0) {
2716: mandoc_msg(MANDOCERR_DIVZERO,
2717: r->parse, ln, *pos, v);
2718: *res = 0;
2719: break;
2720: }
1.204 schwarze 2721: *res %= operand2;
2722: break;
1.207 schwarze 2723: case '<':
1.204 schwarze 2724: *res = *res < operand2;
2725: break;
1.207 schwarze 2726: case '>':
1.204 schwarze 2727: *res = *res > operand2;
2728: break;
1.207 schwarze 2729: case 'l':
1.204 schwarze 2730: *res = *res <= operand2;
2731: break;
1.207 schwarze 2732: case 'g':
1.204 schwarze 2733: *res = *res >= operand2;
2734: break;
1.207 schwarze 2735: case '=':
1.204 schwarze 2736: *res = *res == operand2;
2737: break;
1.207 schwarze 2738: case '!':
1.204 schwarze 2739: *res = *res != operand2;
2740: break;
1.207 schwarze 2741: case '&':
1.204 schwarze 2742: *res = *res && operand2;
2743: break;
1.207 schwarze 2744: case ':':
1.204 schwarze 2745: *res = *res || operand2;
2746: break;
1.207 schwarze 2747: case 'i':
1.204 schwarze 2748: if (operand2 < *res)
2749: *res = operand2;
2750: break;
1.207 schwarze 2751: case 'a':
1.204 schwarze 2752: if (operand2 > *res)
2753: *res = operand2;
2754: break;
2755: default:
2756: abort();
2757: }
2758: }
1.277 schwarze 2759: return 1;
1.204 schwarze 2760: }
2761:
1.266 schwarze 2762: /* --- register management ------------------------------------------------ */
2763:
1.180 schwarze 2764: void
1.187 schwarze 2765: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2766: {
1.327 schwarze 2767: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2768: }
2769:
2770: static void
2771: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2772: int val, char sign, int step)
1.326 schwarze 2773: {
1.180 schwarze 2774: struct roffreg *reg;
2775:
2776: /* Search for an existing register with the same name. */
2777: reg = r->regtab;
2778:
1.326 schwarze 2779: while (reg != NULL && (reg->key.sz != len ||
2780: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 2781: reg = reg->next;
1.147 kristaps 2782:
1.180 schwarze 2783: if (NULL == reg) {
2784: /* Create a new register. */
2785: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 2786: reg->key.p = mandoc_strndup(name, len);
2787: reg->key.sz = len;
1.187 schwarze 2788: reg->val = 0;
1.327 schwarze 2789: reg->step = 0;
1.180 schwarze 2790: reg->next = r->regtab;
2791: r->regtab = reg;
2792: }
2793:
1.187 schwarze 2794: if ('+' == sign)
2795: reg->val += val;
2796: else if ('-' == sign)
2797: reg->val -= val;
2798: else
2799: reg->val = val;
1.327 schwarze 2800: if (step != INT_MIN)
2801: reg->step = step;
1.147 kristaps 2802: }
2803:
1.192 schwarze 2804: /*
2805: * Handle some predefined read-only number registers.
2806: * For now, return -1 if the requested register is not predefined;
2807: * in case a predefined read-only register having the value -1
2808: * were to turn up, another special value would have to be chosen.
2809: */
2810: static int
1.273 schwarze 2811: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2812: {
2813:
2814: switch (*name) {
1.273 schwarze 2815: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 2816: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 2817: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2818: return 0;
1.207 schwarze 2819: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2820: return 1;
1.207 schwarze 2821: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2822: return 24;
1.207 schwarze 2823: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2824: return 0;
1.207 schwarze 2825: case 'T': /* Some output device is always defined. */
1.277 schwarze 2826: return 1;
1.207 schwarze 2827: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2828: return 40;
1.192 schwarze 2829: default:
1.277 schwarze 2830: return -1;
1.192 schwarze 2831: }
2832: }
2833:
1.181 schwarze 2834: int
1.326 schwarze 2835: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 2836: {
1.327 schwarze 2837: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 2838: }
2839:
2840: static int
1.327 schwarze 2841: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 2842: {
2843: struct roffreg *reg;
1.192 schwarze 2844: int val;
2845:
2846: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2847: val = roff_getregro(r, name + 1);
1.192 schwarze 2848: if (-1 != val)
1.277 schwarze 2849: return val;
1.192 schwarze 2850: }
1.181 schwarze 2851:
1.327 schwarze 2852: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 2853: if (len == reg->key.sz &&
1.327 schwarze 2854: 0 == strncmp(name, reg->key.p, len)) {
2855: switch (sign) {
2856: case '+':
2857: reg->val += reg->step;
2858: break;
2859: case '-':
2860: reg->val -= reg->step;
2861: break;
2862: default:
2863: break;
2864: }
1.277 schwarze 2865: return reg->val;
1.327 schwarze 2866: }
2867: }
1.271 schwarze 2868:
1.327 schwarze 2869: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 2870: return 0;
1.271 schwarze 2871: }
2872:
2873: static int
2874: roff_hasregn(const struct roff *r, const char *name, size_t len)
2875: {
2876: struct roffreg *reg;
2877: int val;
2878:
2879: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2880: val = roff_getregro(r, name + 1);
1.271 schwarze 2881: if (-1 != val)
1.277 schwarze 2882: return 1;
1.271 schwarze 2883: }
2884:
2885: for (reg = r->regtab; reg; reg = reg->next)
2886: if (len == reg->key.sz &&
2887: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2888: return 1;
1.147 kristaps 2889:
1.277 schwarze 2890: return 0;
1.147 kristaps 2891: }
2892:
1.180 schwarze 2893: static void
2894: roff_freereg(struct roffreg *reg)
1.147 kristaps 2895: {
1.180 schwarze 2896: struct roffreg *old_reg;
1.147 kristaps 2897:
1.180 schwarze 2898: while (NULL != reg) {
2899: free(reg->key.p);
2900: old_reg = reg;
2901: reg = reg->next;
2902: free(old_reg);
2903: }
1.147 kristaps 2904: }
1.92 schwarze 2905:
1.340 schwarze 2906: static int
1.89 kristaps 2907: roff_nr(ROFF_ARGS)
1.83 schwarze 2908: {
1.327 schwarze 2909: char *key, *val, *step;
1.212 schwarze 2910: size_t keysz;
1.327 schwarze 2911: int iv, is, len;
1.187 schwarze 2912: char sign;
1.89 kristaps 2913:
1.238 schwarze 2914: key = val = buf->buf + pos;
2915: if (*key == '\0')
1.277 schwarze 2916: return ROFF_IGN;
1.212 schwarze 2917:
2918: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2919: if (key[keysz] == '\\')
1.277 schwarze 2920: return ROFF_IGN;
1.89 kristaps 2921:
1.187 schwarze 2922: sign = *val;
1.238 schwarze 2923: if (sign == '+' || sign == '-')
1.187 schwarze 2924: val++;
2925:
1.327 schwarze 2926: len = 0;
2927: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2928: return ROFF_IGN;
2929:
2930: step = val + len;
2931: while (isspace((unsigned char)*step))
2932: step++;
2933: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2934: is = INT_MIN;
1.109 kristaps 2935:
1.327 schwarze 2936: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 2937: return ROFF_IGN;
1.203 schwarze 2938: }
2939:
1.340 schwarze 2940: static int
1.203 schwarze 2941: roff_rr(ROFF_ARGS)
2942: {
2943: struct roffreg *reg, **prev;
1.212 schwarze 2944: char *name, *cp;
2945: size_t namesz;
1.203 schwarze 2946:
1.238 schwarze 2947: name = cp = buf->buf + pos;
2948: if (*name == '\0')
1.277 schwarze 2949: return ROFF_IGN;
1.212 schwarze 2950: namesz = roff_getname(r, &cp, ln, pos);
2951: name[namesz] = '\0';
1.203 schwarze 2952:
2953: prev = &r->regtab;
2954: while (1) {
2955: reg = *prev;
1.238 schwarze 2956: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2957: break;
2958: prev = ®->next;
2959: }
1.238 schwarze 2960: if (reg != NULL) {
1.203 schwarze 2961: *prev = reg->next;
2962: free(reg->key.p);
2963: free(reg);
2964: }
1.277 schwarze 2965: return ROFF_IGN;
1.122 schwarze 2966: }
2967:
1.266 schwarze 2968: /* --- handler functions for roff requests -------------------------------- */
2969:
1.340 schwarze 2970: static int
1.122 schwarze 2971: roff_rm(ROFF_ARGS)
2972: {
2973: const char *name;
2974: char *cp;
1.212 schwarze 2975: size_t namesz;
1.122 schwarze 2976:
1.238 schwarze 2977: cp = buf->buf + pos;
2978: while (*cp != '\0') {
1.212 schwarze 2979: name = cp;
1.238 schwarze 2980: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2981: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 2982: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 2983: if (name[namesz] == '\\')
1.212 schwarze 2984: break;
1.122 schwarze 2985: }
1.277 schwarze 2986: return ROFF_IGN;
1.178 schwarze 2987: }
2988:
1.340 schwarze 2989: static int
1.178 schwarze 2990: roff_it(ROFF_ARGS)
2991: {
2992: int iv;
2993:
2994: /* Parse the number of lines. */
1.261 schwarze 2995:
2996: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2997: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2998: ln, ppos, buf->buf + 1);
1.277 schwarze 2999: return ROFF_IGN;
1.178 schwarze 3000: }
3001:
1.262 schwarze 3002: while (isspace((unsigned char)buf->buf[pos]))
3003: pos++;
3004:
3005: /*
3006: * Arm the input line trap.
3007: * Special-casing "an-trap" is an ugly workaround to cope
3008: * with DocBook stupidly fiddling with man(7) internals.
3009: */
1.261 schwarze 3010:
1.178 schwarze 3011: roffit_lines = iv;
1.262 schwarze 3012: roffit_macro = mandoc_strdup(iv != 1 ||
3013: strcmp(buf->buf + pos, "an-trap") ?
3014: buf->buf + pos : "br");
1.277 schwarze 3015: return ROFF_IGN;
1.175 schwarze 3016: }
3017:
1.340 schwarze 3018: static int
1.175 schwarze 3019: roff_Dd(ROFF_ARGS)
3020: {
1.315 schwarze 3021: int mask;
3022: enum roff_tok t, te;
1.227 schwarze 3023:
1.315 schwarze 3024: switch (tok) {
3025: case ROFF_Dd:
3026: tok = MDOC_Dd;
3027: te = MDOC_MAX;
3028: if (r->format == 0)
3029: r->format = MPARSE_MDOC;
3030: mask = MPARSE_MDOC | MPARSE_QUICK;
3031: break;
3032: case ROFF_TH:
3033: tok = MAN_TH;
3034: te = MAN_MAX;
3035: if (r->format == 0)
3036: r->format = MPARSE_MAN;
3037: mask = MPARSE_QUICK;
3038: break;
3039: default:
3040: abort();
3041: }
3042: if ((r->options & mask) == 0)
3043: for (t = tok; t < te; t++)
3044: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3045: return ROFF_CONT;
1.109 kristaps 3046: }
3047:
1.340 schwarze 3048: static int
1.109 kristaps 3049: roff_TE(ROFF_ARGS)
3050: {
1.321 schwarze 3051: if (r->tbl == NULL) {
1.221 schwarze 3052: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3053: ln, ppos, "TE");
1.321 schwarze 3054: return ROFF_IGN;
3055: }
1.346 schwarze 3056: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3057: r->tbl = NULL;
1.258 schwarze 3058: free(buf->buf);
3059: buf->buf = mandoc_strdup(".sp");
3060: buf->sz = 4;
1.329 schwarze 3061: *offs = 0;
1.277 schwarze 3062: return ROFF_REPARSE;
1.258 schwarze 3063: }
1.321 schwarze 3064: r->tbl = NULL;
1.277 schwarze 3065: return ROFF_IGN;
1.112 kristaps 3066: }
3067:
1.340 schwarze 3068: static int
1.112 kristaps 3069: roff_T_(ROFF_ARGS)
3070: {
3071:
3072: if (NULL == r->tbl)
1.221 schwarze 3073: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3074: ln, ppos, "T&");
1.112 kristaps 3075: else
1.296 schwarze 3076: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3077:
1.277 schwarze 3078: return ROFF_IGN;
1.109 kristaps 3079: }
3080:
1.230 schwarze 3081: /*
3082: * Handle in-line equation delimiters.
3083: */
1.340 schwarze 3084: static int
1.238 schwarze 3085: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3086: {
1.233 schwarze 3087: char *cp1, *cp2;
3088: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3089:
1.230 schwarze 3090: /*
3091: * Outside equations, look for an opening delimiter.
3092: * If we are inside an equation, we already know it is
3093: * in-line, or this function wouldn't have been called;
3094: * so look for a closing delimiter.
3095: */
3096:
1.238 schwarze 3097: cp1 = buf->buf + pos;
1.230 schwarze 3098: cp2 = strchr(cp1, r->eqn == NULL ?
3099: r->last_eqn->odelim : r->last_eqn->cdelim);
3100: if (cp2 == NULL)
1.277 schwarze 3101: return ROFF_CONT;
1.230 schwarze 3102:
1.233 schwarze 3103: *cp2++ = '\0';
3104: bef_pr = bef_nl = aft_nl = aft_pr = "";
3105:
3106: /* Handle preceding text, protecting whitespace. */
3107:
1.238 schwarze 3108: if (*buf->buf != '\0') {
1.233 schwarze 3109: if (r->eqn == NULL)
3110: bef_pr = "\\&";
3111: bef_nl = "\n";
3112: }
3113:
3114: /*
3115: * Prepare replacing the delimiter with an equation macro
3116: * and drop leading white space from the equation.
3117: */
1.230 schwarze 3118:
1.233 schwarze 3119: if (r->eqn == NULL) {
3120: while (*cp2 == ' ')
3121: cp2++;
3122: mac = ".EQ";
3123: } else
3124: mac = ".EN";
3125:
3126: /* Handle following text, protecting whitespace. */
3127:
3128: if (*cp2 != '\0') {
3129: aft_nl = "\n";
3130: if (r->eqn != NULL)
3131: aft_pr = "\\&";
3132: }
3133:
3134: /* Do the actual replacement. */
3135:
1.238 schwarze 3136: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3137: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3138: free(buf->buf);
3139: buf->buf = cp1;
1.230 schwarze 3140:
3141: /* Toggle the in-line state of the eqn subsystem. */
3142:
3143: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3144: return ROFF_REPARSE;
1.151 kristaps 3145: }
3146:
1.340 schwarze 3147: static int
1.235 schwarze 3148: roff_EQ(ROFF_ARGS)
1.125 kristaps 3149: {
1.319 schwarze 3150: struct roff_node *n;
3151:
1.322 schwarze 3152: if (r->man->macroset == MACROSET_MAN)
3153: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3154: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3155: if (ln > r->man->last->line)
3156: n->flags |= NODE_LINE;
1.348 schwarze 3157: n->eqn = eqn_box_new();
1.319 schwarze 3158: roff_node_append(r->man, n);
3159: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3160:
1.238 schwarze 3161: assert(r->eqn == NULL);
1.319 schwarze 3162: if (r->last_eqn == NULL)
3163: r->last_eqn = eqn_alloc(r->parse);
3164: else
3165: eqn_reset(r->last_eqn);
3166: r->eqn = r->last_eqn;
3167: r->eqn->node = n;
1.151 kristaps 3168:
1.238 schwarze 3169: if (buf->buf[pos] != '\0')
1.235 schwarze 3170: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 3171: ".EQ %s", buf->buf + pos);
1.151 kristaps 3172:
1.277 schwarze 3173: return ROFF_IGN;
1.125 kristaps 3174: }
3175:
1.340 schwarze 3176: static int
1.125 kristaps 3177: roff_EN(ROFF_ARGS)
3178: {
1.319 schwarze 3179: if (r->eqn != NULL) {
3180: eqn_parse(r->eqn);
3181: r->eqn = NULL;
3182: } else
3183: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
3184: if (buf->buf[pos] != '\0')
3185: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3186: "EN %s", buf->buf + pos);
1.277 schwarze 3187: return ROFF_IGN;
1.125 kristaps 3188: }
3189:
1.340 schwarze 3190: static int
1.109 kristaps 3191: roff_TS(ROFF_ARGS)
3192: {
1.321 schwarze 3193: if (r->tbl != NULL) {
1.221 schwarze 3194: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
3195: ln, ppos, "TS breaks TS");
1.346 schwarze 3196: tbl_end(r->tbl, 0);
1.115 kristaps 3197: }
1.346 schwarze 3198: r->tbl = tbl_alloc(ppos, ln, r->parse, r->last_tbl);
3199: if (r->last_tbl == NULL)
1.321 schwarze 3200: r->first_tbl = r->tbl;
3201: r->last_tbl = r->tbl;
1.297 schwarze 3202: return ROFF_IGN;
3203: }
3204:
1.340 schwarze 3205: static int
1.297 schwarze 3206: roff_onearg(ROFF_ARGS)
3207: {
3208: struct roff_node *n;
3209: char *cp;
1.305 schwarze 3210: int npos;
1.297 schwarze 3211:
1.302 schwarze 3212: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3213: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3214: tok == ROFF_ti))
1.302 schwarze 3215: man_breakscope(r->man, tok);
3216:
1.309 schwarze 3217: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3218: r->man->last = roffce_node;
3219: r->man->next = ROFF_NEXT_SIBLING;
3220: }
3221:
1.297 schwarze 3222: roff_elem_alloc(r->man, ln, ppos, tok);
3223: n = r->man->last;
3224:
3225: cp = buf->buf + pos;
3226: if (*cp != '\0') {
3227: while (*cp != '\0' && *cp != ' ')
3228: cp++;
3229: while (*cp == ' ')
3230: *cp++ = '\0';
3231: if (*cp != '\0')
3232: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
3233: r->parse, ln, cp - buf->buf,
3234: "%s ... %s", roff_name[tok], cp);
3235: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3236: }
3237:
1.309 schwarze 3238: if (tok == ROFF_ce || tok == ROFF_rj) {
3239: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3240: roff_word_alloc(r->man, ln, pos, "1");
3241: r->man->last->flags |= NODE_NOSRC;
3242: }
3243: npos = 0;
3244: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3245: &roffce_lines, 0) == 0) {
3246: mandoc_vmsg(MANDOCERR_CE_NONUM,
3247: r->parse, ln, pos, "ce %s", buf->buf + pos);
3248: roffce_lines = 1;
3249: }
3250: if (roffce_lines < 1) {
3251: r->man->last = r->man->last->parent;
3252: roffce_node = NULL;
3253: roffce_lines = 0;
3254: } else
3255: roffce_node = r->man->last->parent;
3256: } else {
3257: n->flags |= NODE_VALID | NODE_ENDED;
3258: r->man->last = n;
3259: }
3260: n->flags |= NODE_LINE;
1.300 schwarze 3261: r->man->next = ROFF_NEXT_SIBLING;
3262: return ROFF_IGN;
3263: }
3264:
1.340 schwarze 3265: static int
1.300 schwarze 3266: roff_manyarg(ROFF_ARGS)
3267: {
3268: struct roff_node *n;
3269: char *sp, *ep;
3270:
3271: roff_elem_alloc(r->man, ln, ppos, tok);
3272: n = r->man->last;
3273:
3274: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3275: while (*ep != '\0' && *ep != ' ')
3276: ep++;
3277: while (*ep == ' ')
3278: *ep++ = '\0';
3279: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3280: }
3281:
3282: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3283: r->man->last = n;
3284: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3285: return ROFF_IGN;
1.251 schwarze 3286: }
3287:
1.340 schwarze 3288: static int
1.311 schwarze 3289: roff_als(ROFF_ARGS)
3290: {
3291: char *oldn, *newn, *end, *value;
3292: size_t oldsz, newsz, valsz;
3293:
3294: newn = oldn = buf->buf + pos;
3295: if (*newn == '\0')
3296: return ROFF_IGN;
3297:
3298: newsz = roff_getname(r, &oldn, ln, pos);
3299: if (newn[newsz] == '\\' || *oldn == '\0')
3300: return ROFF_IGN;
3301:
3302: end = oldn;
3303: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3304: if (oldsz == 0)
3305: return ROFF_IGN;
3306:
1.338 schwarze 3307: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3308: (int)oldsz, oldn);
1.311 schwarze 3309: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3310: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3311: free(value);
3312: return ROFF_IGN;
3313: }
3314:
1.340 schwarze 3315: static int
1.296 schwarze 3316: roff_br(ROFF_ARGS)
1.251 schwarze 3317: {
1.302 schwarze 3318: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3319: man_breakscope(r->man, ROFF_br);
1.296 schwarze 3320: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3321: if (buf->buf[pos] != '\0')
3322: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3323: "%s %s", roff_name[tok], buf->buf + pos);
3324: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3325: r->man->next = ROFF_NEXT_SIBLING;
3326: return ROFF_IGN;
1.92 schwarze 3327: }
3328:
1.340 schwarze 3329: static int
1.174 kristaps 3330: roff_cc(ROFF_ARGS)
3331: {
3332: const char *p;
3333:
1.238 schwarze 3334: p = buf->buf + pos;
1.174 kristaps 3335:
1.238 schwarze 3336: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3337: r->control = '\0';
1.174 kristaps 3338:
1.238 schwarze 3339: if (*p != '\0')
1.260 schwarze 3340: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3341: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3342:
1.341 schwarze 3343: return ROFF_IGN;
3344: }
3345:
3346: static int
3347: roff_char(ROFF_ARGS)
3348: {
3349: const char *p, *kp, *vp;
3350: size_t ksz, vsz;
3351: int font;
3352:
3353: /* Parse the character to be replaced. */
3354:
3355: kp = buf->buf + pos;
3356: p = kp + 1;
3357: if (*kp == '\0' || (*kp == '\\' &&
3358: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3359: (*p != ' ' && *p != '\0')) {
3360: mandoc_vmsg(MANDOCERR_CHAR_ARG, r->parse,
3361: ln, pos, "char %s", kp);
3362: return ROFF_IGN;
3363: }
3364: ksz = p - kp;
3365: while (*p == ' ')
3366: p++;
3367:
3368: /*
3369: * If the replacement string contains a font escape sequence,
3370: * we have to restore the font at the end.
3371: */
3372:
3373: vp = p;
3374: vsz = strlen(p);
3375: font = 0;
3376: while (*p != '\0') {
3377: if (*p++ != '\\')
3378: continue;
3379: switch (mandoc_escape(&p, NULL, NULL)) {
3380: case ESCAPE_FONT:
3381: case ESCAPE_FONTROMAN:
3382: case ESCAPE_FONTITALIC:
3383: case ESCAPE_FONTBOLD:
3384: case ESCAPE_FONTBI:
1.342 schwarze 3385: case ESCAPE_FONTCW:
1.341 schwarze 3386: case ESCAPE_FONTPREV:
3387: font++;
3388: break;
3389: default:
3390: break;
3391: }
3392: }
3393: if (font > 1)
3394: mandoc_msg(MANDOCERR_CHAR_FONT, r->parse,
3395: ln, vp - buf->buf, vp);
3396:
3397: /*
3398: * Approximate the effect of .char using the .tr tables.
3399: * XXX In groff, .char and .tr interact differently.
3400: */
3401:
3402: if (ksz == 1) {
3403: if (r->xtab == NULL)
3404: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3405: assert((unsigned int)*kp < 128);
3406: free(r->xtab[(int)*kp].p);
3407: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3408: "%s%s", vp, font ? "\fP" : "");
3409: } else {
3410: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3411: if (font)
3412: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3413: }
1.277 schwarze 3414: return ROFF_IGN;
1.174 kristaps 3415: }
3416:
1.340 schwarze 3417: static int
1.303 schwarze 3418: roff_ec(ROFF_ARGS)
3419: {
3420: const char *p;
3421:
3422: p = buf->buf + pos;
3423: if (*p == '\0')
3424: r->escape = '\\';
3425: else {
3426: r->escape = *p;
3427: if (*++p != '\0')
3428: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3429: ln, p - buf->buf, "ec ... %s", p);
3430: }
3431: return ROFF_IGN;
3432: }
3433:
1.340 schwarze 3434: static int
1.303 schwarze 3435: roff_eo(ROFF_ARGS)
3436: {
3437: r->escape = '\0';
3438: if (buf->buf[pos] != '\0')
3439: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3440: ln, pos, "eo %s", buf->buf + pos);
3441: return ROFF_IGN;
1.330 schwarze 3442: }
3443:
1.340 schwarze 3444: static int
1.330 schwarze 3445: roff_nop(ROFF_ARGS)
3446: {
3447: while (buf->buf[pos] == ' ')
3448: pos++;
3449: *offs = pos;
3450: return ROFF_RERUN;
1.303 schwarze 3451: }
3452:
1.340 schwarze 3453: static int
1.164 kristaps 3454: roff_tr(ROFF_ARGS)
3455: {
3456: const char *p, *first, *second;
3457: size_t fsz, ssz;
3458: enum mandoc_esc esc;
3459:
1.238 schwarze 3460: p = buf->buf + pos;
1.164 kristaps 3461:
1.238 schwarze 3462: if (*p == '\0') {
1.260 schwarze 3463: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 3464: return ROFF_IGN;
1.164 kristaps 3465: }
3466:
1.238 schwarze 3467: while (*p != '\0') {
1.164 kristaps 3468: fsz = ssz = 1;
3469:
3470: first = p++;
1.238 schwarze 3471: if (*first == '\\') {
1.164 kristaps 3472: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3473: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3474: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3475: ln, (int)(p - buf->buf), first);
1.277 schwarze 3476: return ROFF_IGN;
1.164 kristaps 3477: }
3478: fsz = (size_t)(p - first);
3479: }
3480:
3481: second = p++;
1.238 schwarze 3482: if (*second == '\\') {
1.164 kristaps 3483: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3484: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3485: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3486: ln, (int)(p - buf->buf), second);
1.277 schwarze 3487: return ROFF_IGN;
1.164 kristaps 3488: }
3489: ssz = (size_t)(p - second);
1.238 schwarze 3490: } else if (*second == '\0') {
1.260 schwarze 3491: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3492: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3493: second = " ";
1.165 kristaps 3494: p--;
1.164 kristaps 3495: }
3496:
1.167 kristaps 3497: if (fsz > 1) {
1.207 schwarze 3498: roff_setstrn(&r->xmbtab, first, fsz,
3499: second, ssz, 0);
1.167 kristaps 3500: continue;
3501: }
3502:
1.238 schwarze 3503: if (r->xtab == NULL)
1.207 schwarze 3504: r->xtab = mandoc_calloc(128,
3505: sizeof(struct roffstr));
1.167 kristaps 3506:
3507: free(r->xtab[(int)*first].p);
3508: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3509: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3510: }
3511:
1.277 schwarze 3512: return ROFF_IGN;
1.164 kristaps 3513: }
3514:
1.339 schwarze 3515: /*
3516: * Implementation of the .return request.
3517: * There is no need to call roff_userret() from here.
3518: * The read module will call that after rewinding the reader stack
3519: * to the place from where the current macro was called.
3520: */
1.340 schwarze 3521: static int
1.339 schwarze 3522: roff_return(ROFF_ARGS)
3523: {
3524: if (r->mstackpos >= 0)
1.340 schwarze 3525: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3526:
3527: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "return");
3528: return ROFF_IGN;
3529: }
3530:
1.340 schwarze 3531: static int
1.306 schwarze 3532: roff_rn(ROFF_ARGS)
3533: {
3534: const char *value;
3535: char *oldn, *newn, *end;
3536: size_t oldsz, newsz;
1.315 schwarze 3537: int deftype;
1.306 schwarze 3538:
3539: oldn = newn = buf->buf + pos;
3540: if (*oldn == '\0')
3541: return ROFF_IGN;
3542:
3543: oldsz = roff_getname(r, &newn, ln, pos);
3544: if (oldn[oldsz] == '\\' || *newn == '\0')
3545: return ROFF_IGN;
3546:
3547: end = newn;
3548: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3549: if (newsz == 0)
3550: return ROFF_IGN;
3551:
1.315 schwarze 3552: deftype = ROFFDEF_ANY;
3553: value = roff_getstrn(r, oldn, oldsz, &deftype);
3554: switch (deftype) {
3555: case ROFFDEF_USER:
1.306 schwarze 3556: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3557: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3558: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3559: break;
3560: case ROFFDEF_PRE:
3561: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3562: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3563: break;
3564: case ROFFDEF_REN:
1.306 schwarze 3565: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3566: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3567: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3568: break;
3569: case ROFFDEF_STD:
1.306 schwarze 3570: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3571: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3572: break;
3573: default:
3574: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3575: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3576: break;
3577: }
1.306 schwarze 3578: return ROFF_IGN;
3579: }
3580:
1.340 schwarze 3581: static int
1.339 schwarze 3582: roff_shift(ROFF_ARGS)
3583: {
3584: struct mctx *ctx;
3585: int levels, i;
3586:
3587: levels = 1;
3588: if (buf->buf[pos] != '\0' &&
3589: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
3590: mandoc_vmsg(MANDOCERR_CE_NONUM, r->parse,
3591: ln, pos, "shift %s", buf->buf + pos);
3592: levels = 1;
3593: }
3594: if (r->mstackpos < 0) {
3595: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "shift");
3596: return ROFF_IGN;
3597: }
3598: ctx = r->mstack + r->mstackpos;
3599: if (levels > ctx->argc) {
3600: mandoc_vmsg(MANDOCERR_SHIFT, r->parse,
3601: ln, pos, "%d, but max is %d", levels, ctx->argc);
3602: levels = ctx->argc;
3603: }
3604: if (levels == 0)
3605: return ROFF_IGN;
3606: for (i = 0; i < levels; i++)
3607: free(ctx->argv[i]);
3608: ctx->argc -= levels;
3609: for (i = 0; i < ctx->argc; i++)
3610: ctx->argv[i] = ctx->argv[i + levels];
3611: return ROFF_IGN;
3612: }
3613:
1.340 schwarze 3614: static int
1.105 kristaps 3615: roff_so(ROFF_ARGS)
3616: {
1.249 schwarze 3617: char *name, *cp;
1.105 kristaps 3618:
1.238 schwarze 3619: name = buf->buf + pos;
1.224 schwarze 3620: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3621:
3622: /*
3623: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3624: * opening anything that's not in our cwd or anything beneath
3625: * it. Thus, explicitly disallow traversing up the file-system
3626: * or using absolute paths.
3627: */
3628:
1.238 schwarze 3629: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3630: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3631: ".so %s", name);
1.249 schwarze 3632: buf->sz = mandoc_asprintf(&cp,
3633: ".sp\nSee the file %s.\n.sp", name) + 1;
3634: free(buf->buf);
3635: buf->buf = cp;
3636: *offs = 0;
1.277 schwarze 3637: return ROFF_REPARSE;
1.105 kristaps 3638: }
3639:
3640: *offs = pos;
1.277 schwarze 3641: return ROFF_SO;
1.105 kristaps 3642: }
1.92 schwarze 3643:
1.266 schwarze 3644: /* --- user defined strings and macros ------------------------------------ */
3645:
1.340 schwarze 3646: static int
1.106 kristaps 3647: roff_userdef(ROFF_ARGS)
1.99 kristaps 3648: {
1.339 schwarze 3649: struct mctx *ctx;
3650: char *arg, *ap, *dst, *src;
3651: size_t sz;
3652:
3653: /* Initialize a new macro stack context. */
3654:
3655: if (++r->mstackpos == r->mstacksz) {
3656: r->mstack = mandoc_recallocarray(r->mstack,
3657: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3658: r->mstacksz += 8;
3659: }
3660: ctx = r->mstack + r->mstackpos;
3661: ctx->argsz = 0;
3662: ctx->argc = 0;
3663: ctx->argv = NULL;
3664:
3665: /*
3666: * Collect pointers to macro argument strings,
3667: * NUL-terminating them and escaping quotes.
3668: */
3669:
3670: src = buf->buf + pos;
3671: while (*src != '\0') {
3672: if (ctx->argc == ctx->argsz) {
3673: ctx->argsz += 8;
3674: ctx->argv = mandoc_reallocarray(ctx->argv,
3675: ctx->argsz, sizeof(*ctx->argv));
3676: }
3677: arg = mandoc_getarg(r->parse, &src, ln, &pos);
3678: sz = 1; /* For the terminating NUL. */
3679: for (ap = arg; *ap != '\0'; ap++)
3680: sz += *ap == '"' ? 4 : 1;
3681: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3682: for (ap = arg; *ap != '\0'; ap++) {
3683: if (*ap == '"') {
3684: memcpy(dst, "\\(dq", 4);
3685: dst += 4;
3686: } else
3687: *dst++ = *ap;
1.106 kristaps 3688: }
1.339 schwarze 3689: *dst = '\0';
1.337 schwarze 3690: }
3691:
1.339 schwarze 3692: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3693:
1.238 schwarze 3694: free(buf->buf);
1.339 schwarze 3695: buf->buf = mandoc_strdup(r->current_string);
3696: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3697: *offs = 0;
1.106 kristaps 3698:
1.277 schwarze 3699: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3700: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3701: }
1.121 schwarze 3702:
1.306 schwarze 3703: /*
3704: * Calling a high-level macro that was renamed with .rn.
3705: * r->current_string has already been set up by roff_parse().
3706: */
1.340 schwarze 3707: static int
1.306 schwarze 3708: roff_renamed(ROFF_ARGS)
3709: {
3710: char *nbuf;
3711:
1.315 schwarze 3712: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3713: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3714: free(buf->buf);
3715: buf->buf = nbuf;
1.329 schwarze 3716: *offs = 0;
1.306 schwarze 3717: return ROFF_CONT;
3718: }
3719:
1.212 schwarze 3720: static size_t
1.121 schwarze 3721: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3722: {
3723: char *name, *cp;
1.212 schwarze 3724: size_t namesz;
1.121 schwarze 3725:
3726: name = *cpp;
3727: if ('\0' == *name)
1.277 schwarze 3728: return 0;
1.121 schwarze 3729:
1.212 schwarze 3730: /* Read until end of name and terminate it with NUL. */
3731: for (cp = name; 1; cp++) {
3732: if ('\0' == *cp || ' ' == *cp) {
3733: namesz = cp - name;
3734: break;
3735: }
1.121 schwarze 3736: if ('\\' != *cp)
3737: continue;
1.215 schwarze 3738: namesz = cp - name;
3739: if ('{' == cp[1] || '}' == cp[1])
3740: break;
1.121 schwarze 3741: cp++;
3742: if ('\\' == *cp)
3743: continue;
1.224 schwarze 3744: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3745: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3746: mandoc_escape((const char **)&cp, NULL, NULL);
3747: break;
1.121 schwarze 3748: }
3749:
3750: /* Read past spaces. */
3751: while (' ' == *cp)
3752: cp++;
3753:
3754: *cpp = cp;
1.277 schwarze 3755: return namesz;
1.121 schwarze 3756: }
3757:
1.106 kristaps 3758: /*
3759: * Store *string into the user-defined string called *name.
3760: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3761: * append == 0: replace mode
3762: * append == 1: single-line append mode
3763: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3764: */
1.94 kristaps 3765: static void
1.106 kristaps 3766: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3767: int append)
1.92 schwarze 3768: {
1.315 schwarze 3769: size_t namesz;
1.164 kristaps 3770:
1.315 schwarze 3771: namesz = strlen(name);
3772: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 3773: string ? strlen(string) : 0, append);
1.315 schwarze 3774: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 3775: }
3776:
3777: static void
1.166 kristaps 3778: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3779: const char *string, size_t stringsz, int append)
1.164 kristaps 3780: {
1.166 kristaps 3781: struct roffkv *n;
1.164 kristaps 3782: char *c;
3783: int i;
3784: size_t oldch, newch;
1.92 schwarze 3785:
1.106 kristaps 3786: /* Search for an existing string with the same name. */
1.164 kristaps 3787: n = *r;
3788:
1.211 schwarze 3789: while (n && (namesz != n->key.sz ||
3790: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3791: n = n->next;
1.94 kristaps 3792:
3793: if (NULL == n) {
1.106 kristaps 3794: /* Create a new string table entry. */
1.166 kristaps 3795: n = mandoc_malloc(sizeof(struct roffkv));
3796: n->key.p = mandoc_strndup(name, namesz);
3797: n->key.sz = namesz;
3798: n->val.p = NULL;
3799: n->val.sz = 0;
1.164 kristaps 3800: n->next = *r;
3801: *r = n;
1.193 schwarze 3802: } else if (0 == append) {
1.166 kristaps 3803: free(n->val.p);
3804: n->val.p = NULL;
3805: n->val.sz = 0;
1.106 kristaps 3806: }
3807:
3808: if (NULL == string)
3809: return;
3810:
3811: /*
3812: * One additional byte for the '\n' in multiline mode,
3813: * and one for the terminating '\0'.
3814: */
1.193 schwarze 3815: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3816:
1.166 kristaps 3817: if (NULL == n->val.p) {
3818: n->val.p = mandoc_malloc(newch);
3819: *n->val.p = '\0';
1.106 kristaps 3820: oldch = 0;
3821: } else {
1.166 kristaps 3822: oldch = n->val.sz;
3823: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3824: }
3825:
3826: /* Skip existing content in the destination buffer. */
1.166 kristaps 3827: c = n->val.p + (int)oldch;
1.106 kristaps 3828:
3829: /* Append new content to the destination buffer. */
1.164 kristaps 3830: i = 0;
3831: while (i < (int)stringsz) {
1.106 kristaps 3832: /*
3833: * Rudimentary roff copy mode:
3834: * Handle escaped backslashes.
3835: */
1.164 kristaps 3836: if ('\\' == string[i] && '\\' == string[i + 1])
3837: i++;
3838: *c++ = string[i++];
1.106 kristaps 3839: }
1.94 kristaps 3840:
1.106 kristaps 3841: /* Append terminating bytes. */
1.193 schwarze 3842: if (1 < append)
1.106 kristaps 3843: *c++ = '\n';
1.163 kristaps 3844:
1.106 kristaps 3845: *c = '\0';
1.166 kristaps 3846: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3847: }
3848:
1.94 kristaps 3849: static const char *
1.325 schwarze 3850: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 3851: int *deftype)
1.92 schwarze 3852: {
1.315 schwarze 3853: const struct roffkv *n;
1.325 schwarze 3854: int found, i;
1.315 schwarze 3855: enum roff_tok tok;
3856:
1.325 schwarze 3857: found = 0;
3858: for (n = r->strtab; n != NULL; n = n->next) {
3859: if (strncmp(name, n->key.p, len) != 0 ||
3860: n->key.p[len] != '\0' || n->val.p == NULL)
3861: continue;
3862: if (*deftype & ROFFDEF_USER) {
3863: *deftype = ROFFDEF_USER;
3864: return n->val.p;
3865: } else {
3866: found = 1;
3867: break;
3868: }
3869: }
3870: for (n = r->rentab; n != NULL; n = n->next) {
3871: if (strncmp(name, n->key.p, len) != 0 ||
3872: n->key.p[len] != '\0' || n->val.p == NULL)
3873: continue;
3874: if (*deftype & ROFFDEF_REN) {
3875: *deftype = ROFFDEF_REN;
3876: return n->val.p;
3877: } else {
3878: found = 1;
3879: break;
1.315 schwarze 3880: }
3881: }
1.325 schwarze 3882: for (i = 0; i < PREDEFS_MAX; i++) {
3883: if (strncmp(name, predefs[i].name, len) != 0 ||
3884: predefs[i].name[len] != '\0')
3885: continue;
3886: if (*deftype & ROFFDEF_PRE) {
3887: *deftype = ROFFDEF_PRE;
3888: return predefs[i].str;
3889: } else {
3890: found = 1;
3891: break;
1.315 schwarze 3892: }
3893: }
1.325 schwarze 3894: if (r->man->macroset != MACROSET_MAN) {
3895: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3896: if (strncmp(name, roff_name[tok], len) != 0 ||
3897: roff_name[tok][len] != '\0')
3898: continue;
3899: if (*deftype & ROFFDEF_STD) {
3900: *deftype = ROFFDEF_STD;
3901: return NULL;
3902: } else {
3903: found = 1;
3904: break;
1.315 schwarze 3905: }
3906: }
3907: }
1.325 schwarze 3908: if (r->man->macroset != MACROSET_MDOC) {
3909: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3910: if (strncmp(name, roff_name[tok], len) != 0 ||
3911: roff_name[tok][len] != '\0')
3912: continue;
3913: if (*deftype & ROFFDEF_STD) {
3914: *deftype = ROFFDEF_STD;
3915: return NULL;
3916: } else {
3917: found = 1;
3918: break;
1.315 schwarze 3919: }
3920: }
1.325 schwarze 3921: }
3922:
3923: if (found == 0 && *deftype != ROFFDEF_ANY) {
3924: if (*deftype & ROFFDEF_REN) {
3925: /*
3926: * This might still be a request,
3927: * so do not treat it as undefined yet.
3928: */
3929: *deftype = ROFFDEF_UNDEF;
3930: return NULL;
1.315 schwarze 3931: }
1.325 schwarze 3932:
3933: /* Using an undefined string defines it to be empty. */
3934:
3935: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3936: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 3937: }
1.325 schwarze 3938:
1.315 schwarze 3939: *deftype = 0;
1.277 schwarze 3940: return NULL;
1.92 schwarze 3941: }
3942:
1.94 kristaps 3943: static void
1.167 kristaps 3944: roff_freestr(struct roffkv *r)
1.92 schwarze 3945: {
1.166 kristaps 3946: struct roffkv *n, *nn;
1.92 schwarze 3947:
1.167 kristaps 3948: for (n = r; n; n = nn) {
1.166 kristaps 3949: free(n->key.p);
3950: free(n->val.p);
1.92 schwarze 3951: nn = n->next;
3952: free(n);
3953: }
1.114 kristaps 3954: }
1.266 schwarze 3955:
3956: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 3957:
3958: /*
3959: * Duplicate an input string, making the appropriate character
3960: * conversations (as stipulated by `tr') along the way.
3961: * Returns a heap-allocated string with all the replacements made.
3962: */
3963: char *
3964: roff_strdup(const struct roff *r, const char *p)
3965: {
1.166 kristaps 3966: const struct roffkv *cp;
1.164 kristaps 3967: char *res;
3968: const char *pp;
3969: size_t ssz, sz;
3970: enum mandoc_esc esc;
3971:
1.167 kristaps 3972: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3973: return mandoc_strdup(p);
1.164 kristaps 3974: else if ('\0' == *p)
1.277 schwarze 3975: return mandoc_strdup("");
1.164 kristaps 3976:
3977: /*
3978: * Step through each character looking for term matches
3979: * (remember that a `tr' can be invoked with an escape, which is
3980: * a glyph but the escape is multi-character).
3981: * We only do this if the character hash has been initialised
3982: * and the string is >0 length.
3983: */
3984:
3985: res = NULL;
3986: ssz = 0;
3987:
3988: while ('\0' != *p) {
1.289 schwarze 3989: assert((unsigned int)*p < 128);
3990: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3991: sz = r->xtab[(int)*p].sz;
3992: res = mandoc_realloc(res, ssz + sz + 1);
3993: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3994: ssz += sz;
3995: p++;
3996: continue;
3997: } else if ('\\' != *p) {
3998: res = mandoc_realloc(res, ssz + 2);
3999: res[ssz++] = *p++;
4000: continue;
4001: }
4002:
1.164 kristaps 4003: /* Search for term matches. */
1.167 kristaps 4004: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4005: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4006: break;
4007:
4008: if (NULL != cp) {
4009: /*
4010: * A match has been found.
4011: * Append the match to the array and move
4012: * forward by its keysize.
4013: */
1.207 schwarze 4014: res = mandoc_realloc(res,
4015: ssz + cp->val.sz + 1);
1.166 kristaps 4016: memcpy(res + ssz, cp->val.p, cp->val.sz);
4017: ssz += cp->val.sz;
4018: p += (int)cp->key.sz;
1.164 kristaps 4019: continue;
4020: }
4021:
1.167 kristaps 4022: /*
4023: * Handle escapes carefully: we need to copy
4024: * over just the escape itself, or else we might
4025: * do replacements within the escape itself.
4026: * Make sure to pass along the bogus string.
4027: */
4028: pp = p++;
4029: esc = mandoc_escape(&p, NULL, NULL);
4030: if (ESCAPE_ERROR == esc) {
4031: sz = strlen(pp);
1.164 kristaps 4032: res = mandoc_realloc(res, ssz + sz + 1);
4033: memcpy(res + ssz, pp, sz);
1.167 kristaps 4034: break;
1.164 kristaps 4035: }
1.207 schwarze 4036: /*
4037: * We bail out on bad escapes.
1.167 kristaps 4038: * No need to warn: we already did so when
4039: * roff_res() was called.
4040: */
4041: sz = (int)(p - pp);
4042: res = mandoc_realloc(res, ssz + sz + 1);
4043: memcpy(res + ssz, pp, sz);
4044: ssz += sz;
1.164 kristaps 4045: }
4046:
4047: res[(int)ssz] = '\0';
1.277 schwarze 4048: return res;
1.227 schwarze 4049: }
4050:
4051: int
4052: roff_getformat(const struct roff *r)
4053: {
4054:
1.277 schwarze 4055: return r->format;
1.174 kristaps 4056: }
4057:
4058: /*
1.207 schwarze 4059: * Find out whether a line is a macro line or not.
1.174 kristaps 4060: * If it is, adjust the current position and return one; if it isn't,
4061: * return zero and don't change the current position.
4062: * If the control character has been set with `.cc', then let that grain
4063: * precedence.
4064: * This is slighly contrary to groff, where using the non-breaking
4065: * control character when `cc' has been invoked will cause the
4066: * non-breaking macro contents to be printed verbatim.
4067: */
4068: int
4069: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4070: {
4071: int pos;
4072:
4073: pos = *ppos;
4074:
1.303 schwarze 4075: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4076: pos++;
1.303 schwarze 4077: else if (r->control != '\0')
1.277 schwarze 4078: return 0;
1.174 kristaps 4079: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4080: pos += 2;
4081: else if ('.' == cp[pos] || '\'' == cp[pos])
4082: pos++;
4083: else
1.277 schwarze 4084: return 0;
1.174 kristaps 4085:
4086: while (' ' == cp[pos] || '\t' == cp[pos])
4087: pos++;
4088:
4089: *ppos = pos;
1.277 schwarze 4090: return 1;
1.74 kristaps 4091: }
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