Annotation of mandoc/roff.c, Revision 1.348
1.348 ! schwarze 1: /* $Id: roff.c,v 1.347 2018/12/13 03:40:13 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"
1.226 schwarze 35: #include "libmandoc.h"
1.266 schwarze 36: #include "roff_int.h"
1.346 schwarze 37: #include "tbl_parse.h"
1.347 schwarze 38: #include "eqn_parse.h"
1.82 kristaps 39:
1.170 schwarze 40: /* Maximum number of string expansions per line, to break infinite loops. */
41: #define EXPAND_LIMIT 1000
42:
1.315 schwarze 43: /* Types of definitions of macros and strings. */
44: #define ROFFDEF_USER (1 << 1) /* User-defined. */
45: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
46: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
47: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
48: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
49: ROFFDEF_REN | ROFFDEF_STD)
1.325 schwarze 50: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 51:
1.266 schwarze 52: /* --- data types --------------------------------------------------------- */
53:
1.147 kristaps 54: /*
1.167 kristaps 55: * An incredibly-simple string buffer.
56: */
1.94 kristaps 57: struct roffstr {
1.167 kristaps 58: char *p; /* nil-terminated buffer */
59: size_t sz; /* saved strlen(p) */
1.166 kristaps 60: };
61:
62: /*
1.167 kristaps 63: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 64: */
65: struct roffkv {
66: struct roffstr key;
67: struct roffstr val;
68: struct roffkv *next; /* next in list */
1.94 kristaps 69: };
70:
1.180 schwarze 71: /*
72: * A single number register as part of a singly-linked list.
73: */
74: struct roffreg {
75: struct roffstr key;
1.181 schwarze 76: int val;
1.327 schwarze 77: int step;
1.180 schwarze 78: struct roffreg *next;
79: };
80:
1.295 schwarze 81: /*
82: * Association of request and macro names with token IDs.
83: */
84: struct roffreq {
85: enum roff_tok tok;
86: char name[];
87: };
88:
1.339 schwarze 89: /*
90: * A macro processing context.
91: * More than one is needed when macro calls are nested.
92: */
93: struct mctx {
94: char **argv;
95: int argc;
96: int argsz;
97: };
98:
1.67 kristaps 99: struct roff {
1.128 kristaps 100: struct mparse *parse; /* parse point */
1.296 schwarze 101: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 102: struct roffnode *last; /* leaf of stack */
1.339 schwarze 103: struct mctx *mstack; /* stack of macro contexts */
1.223 schwarze 104: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 105: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 106: struct roffreg *regtab; /* number registers */
1.166 kristaps 107: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 108: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 109: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
110: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 111: const char *current_string; /* value of last called user macro */
1.118 kristaps 112: struct tbl_node *first_tbl; /* first table parsed */
113: struct tbl_node *last_tbl; /* last table parsed */
114: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 115: struct eqn_node *last_eqn; /* equation parser */
116: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 117: int eqn_inline; /* current equation is inline */
1.223 schwarze 118: int options; /* parse options */
1.339 schwarze 119: int mstacksz; /* current size of mstack */
120: int mstackpos; /* position in mstack */
1.223 schwarze 121: int rstacksz; /* current size limit of rstack */
122: int rstackpos; /* position in rstack */
1.227 schwarze 123: int format; /* current file in mdoc or man format */
1.223 schwarze 124: char control; /* control character */
1.303 schwarze 125: char escape; /* escape character */
1.79 kristaps 126: };
127:
1.67 kristaps 128: struct roffnode {
1.294 schwarze 129: enum roff_tok tok; /* type of node */
1.67 kristaps 130: struct roffnode *parent; /* up one in stack */
131: int line; /* parse line */
132: int col; /* parse col */
1.106 kristaps 133: char *name; /* node name, e.g. macro name */
1.79 kristaps 134: char *end; /* end-rules: custom token */
135: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 136: int rule; /* current evaluation rule */
1.67 kristaps 137: };
138:
139: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 140: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 141: struct buf *buf, /* input buffer */ \
1.67 kristaps 142: int ln, /* parse line */ \
1.75 kristaps 143: int ppos, /* original pos in buffer */ \
144: int pos, /* current pos in buffer */ \
1.74 kristaps 145: int *offs /* reset offset of buffer data */
1.67 kristaps 146:
1.340 schwarze 147: typedef int (*roffproc)(ROFF_ARGS);
1.67 kristaps 148:
149: struct roffmac {
1.79 kristaps 150: roffproc proc; /* process new macro */
151: roffproc text; /* process as child text of macro */
152: roffproc sub; /* process as child of macro */
153: int flags;
154: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 155: };
156:
1.141 kristaps 157: struct predef {
158: const char *name; /* predefined input name */
159: const char *str; /* replacement symbol */
160: };
161:
162: #define PREDEF(__name, __str) \
163: { (__name), (__str) },
164:
1.266 schwarze 165: /* --- function prototypes ------------------------------------------------ */
166:
1.340 schwarze 167: static int roffnode_cleanscope(struct roff *);
168: static int roffnode_pop(struct roff *);
1.294 schwarze 169: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 170: const char *, int, int);
1.346 schwarze 171: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.340 schwarze 172: static int roff_als(ROFF_ARGS);
173: static int roff_block(ROFF_ARGS);
174: static int roff_block_text(ROFF_ARGS);
175: static int roff_block_sub(ROFF_ARGS);
176: static int roff_br(ROFF_ARGS);
177: static int roff_cblock(ROFF_ARGS);
178: static int roff_cc(ROFF_ARGS);
179: static int roff_ccond(struct roff *, int, int);
1.341 schwarze 180: static int roff_char(ROFF_ARGS);
1.340 schwarze 181: static int roff_cond(ROFF_ARGS);
182: static int roff_cond_text(ROFF_ARGS);
183: static int roff_cond_sub(ROFF_ARGS);
184: static int roff_ds(ROFF_ARGS);
185: static int roff_ec(ROFF_ARGS);
186: static int roff_eo(ROFF_ARGS);
187: static int roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 188: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 189: static int roff_evalnum(struct roff *, int,
190: const char *, int *, int *, int);
191: static int roff_evalpar(struct roff *, int,
1.261 schwarze 192: const char *, int *, int *, int);
1.198 schwarze 193: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 194: static void roff_free1(struct roff *);
1.180 schwarze 195: static void roff_freereg(struct roffreg *);
1.167 kristaps 196: static void roff_freestr(struct roffkv *);
1.212 schwarze 197: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 198: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 199: static int roff_getop(const char *, int *, char *);
1.327 schwarze 200: static int roff_getregn(struct roff *,
201: const char *, size_t, char);
1.273 schwarze 202: static int roff_getregro(const struct roff *,
203: const char *name);
1.325 schwarze 204: static const char *roff_getstrn(struct roff *,
1.315 schwarze 205: const char *, size_t, int *);
1.271 schwarze 206: static int roff_hasregn(const struct roff *,
207: const char *, size_t);
1.340 schwarze 208: static int roff_insec(ROFF_ARGS);
209: static int roff_it(ROFF_ARGS);
210: static int roff_line_ignore(ROFF_ARGS);
1.265 schwarze 211: static void roff_man_alloc1(struct roff_man *);
212: static void roff_man_free1(struct roff_man *);
1.340 schwarze 213: static int roff_manyarg(ROFF_ARGS);
214: static int roff_nop(ROFF_ARGS);
215: static int roff_nr(ROFF_ARGS);
216: static int roff_onearg(ROFF_ARGS);
1.294 schwarze 217: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 218: int, int);
1.340 schwarze 219: static int roff_parsetext(struct roff *, struct buf *,
1.305 schwarze 220: int, int *);
1.340 schwarze 221: static int roff_renamed(ROFF_ARGS);
222: static int roff_res(struct roff *, struct buf *, int, int);
223: static int roff_return(ROFF_ARGS);
224: static int roff_rm(ROFF_ARGS);
225: static int roff_rn(ROFF_ARGS);
226: static int roff_rr(ROFF_ARGS);
1.326 schwarze 227: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 228: size_t, int, char, int);
1.94 kristaps 229: static void roff_setstr(struct roff *,
1.106 kristaps 230: const char *, const char *, int);
1.207 schwarze 231: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 232: size_t, const char *, size_t, int);
1.340 schwarze 233: static int roff_shift(ROFF_ARGS);
234: static int roff_so(ROFF_ARGS);
235: static int roff_tr(ROFF_ARGS);
236: static int roff_Dd(ROFF_ARGS);
237: static int roff_TE(ROFF_ARGS);
238: static int roff_TS(ROFF_ARGS);
239: static int roff_EQ(ROFF_ARGS);
240: static int roff_EN(ROFF_ARGS);
241: static int roff_T_(ROFF_ARGS);
242: static int roff_unsupp(ROFF_ARGS);
243: static int roff_userdef(ROFF_ARGS);
1.67 kristaps 244:
1.266 schwarze 245: /* --- constant data ------------------------------------------------------ */
246:
1.261 schwarze 247: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
248: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
249:
1.294 schwarze 250: const char *__roff_name[MAN_MAX + 1] = {
1.305 schwarze 251: "br", "ce", "ft", "ll",
1.312 schwarze 252: "mc", "po", "rj", "sp",
253: "ta", "ti", NULL,
1.294 schwarze 254: "ab", "ad", "af", "aln",
255: "als", "am", "am1", "ami",
256: "ami1", "as", "as1", "asciify",
257: "backtrace", "bd", "bleedat", "blm",
258: "box", "boxa", "bp", "BP",
259: "break", "breakchar", "brnl", "brp",
1.305 schwarze 260: "brpnl", "c2", "cc",
1.294 schwarze 261: "cf", "cflags", "ch", "char",
262: "chop", "class", "close", "CL",
263: "color", "composite", "continue", "cp",
264: "cropat", "cs", "cu", "da",
265: "dch", "Dd", "de", "de1",
266: "defcolor", "dei", "dei1", "device",
267: "devicem", "di", "do", "ds",
268: "ds1", "dwh", "dt", "ec",
269: "ecr", "ecs", "el", "em",
270: "EN", "eo", "EP", "EQ",
271: "errprint", "ev", "evc", "ex",
272: "fallback", "fam", "fc", "fchar",
273: "fcolor", "fdeferlig", "feature", "fkern",
274: "fl", "flig", "fp", "fps",
275: "fschar", "fspacewidth", "fspecial", "ftr",
276: "fzoom", "gcolor", "hc", "hcode",
277: "hidechar", "hla", "hlm", "hpf",
278: "hpfa", "hpfcode", "hw", "hy",
279: "hylang", "hylen", "hym", "hypp",
280: "hys", "ie", "if", "ig",
281: "index", "it", "itc", "IX",
282: "kern", "kernafter", "kernbefore", "kernpair",
283: "lc", "lc_ctype", "lds", "length",
284: "letadj", "lf", "lg", "lhang",
285: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 286: "ls", "lsm", "lt",
1.294 schwarze 287: "mediasize", "minss", "mk", "mso",
288: "na", "ne", "nh", "nhychar",
289: "nm", "nn", "nop", "nr",
290: "nrf", "nroff", "ns", "nx",
291: "open", "opena", "os", "output",
292: "padj", "papersize", "pc", "pev",
293: "pi", "PI", "pl", "pm",
1.312 schwarze 294: "pn", "pnr", "ps",
1.294 schwarze 295: "psbb", "pshape", "pso", "ptr",
296: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 297: "return", "rfschar", "rhang",
1.294 schwarze 298: "rm", "rn", "rnn", "rr",
299: "rs", "rt", "schar", "sentchar",
300: "shc", "shift", "sizes", "so",
301: "spacewidth", "special", "spreadwarn", "ss",
302: "sty", "substring", "sv", "sy",
1.300 schwarze 303: "T&", "tc", "TE",
1.301 schwarze 304: "TH", "tkf", "tl",
1.294 schwarze 305: "tm", "tm1", "tmc", "tr",
306: "track", "transchar", "trf", "trimat",
307: "trin", "trnt", "troff", "TS",
308: "uf", "ul", "unformat", "unwatch",
309: "unwatchn", "vpt", "vs", "warn",
310: "warnscale", "watch", "watchlength", "watchn",
311: "wh", "while", "write", "writec",
312: "writem", "xflag", ".", NULL,
1.306 schwarze 313: NULL, "text",
1.294 schwarze 314: "Dd", "Dt", "Os", "Sh",
315: "Ss", "Pp", "D1", "Dl",
316: "Bd", "Ed", "Bl", "El",
317: "It", "Ad", "An", "Ap",
318: "Ar", "Cd", "Cm", "Dv",
319: "Er", "Ev", "Ex", "Fa",
320: "Fd", "Fl", "Fn", "Ft",
321: "Ic", "In", "Li", "Nd",
322: "Nm", "Op", "Ot", "Pa",
323: "Rv", "St", "Va", "Vt",
324: "Xr", "%A", "%B", "%D",
325: "%I", "%J", "%N", "%O",
326: "%P", "%R", "%T", "%V",
327: "Ac", "Ao", "Aq", "At",
328: "Bc", "Bf", "Bo", "Bq",
329: "Bsx", "Bx", "Db", "Dc",
330: "Do", "Dq", "Ec", "Ef",
331: "Em", "Eo", "Fx", "Ms",
332: "No", "Ns", "Nx", "Ox",
333: "Pc", "Pf", "Po", "Pq",
334: "Qc", "Ql", "Qo", "Qq",
335: "Re", "Rs", "Sc", "So",
336: "Sq", "Sm", "Sx", "Sy",
337: "Tn", "Ux", "Xc", "Xo",
338: "Fo", "Fc", "Oo", "Oc",
339: "Bk", "Ek", "Bt", "Hf",
340: "Fr", "Ud", "Lb", "Lp",
341: "Lk", "Mt", "Brq", "Bro",
342: "Brc", "%C", "Es", "En",
1.299 schwarze 343: "Dx", "%Q", "%U", "Ta",
344: NULL,
1.294 schwarze 345: "TH", "SH", "SS", "TP",
1.332 schwarze 346: "TQ",
1.294 schwarze 347: "LP", "PP", "P", "IP",
348: "HP", "SM", "SB", "BI",
349: "IB", "BR", "RB", "R",
350: "B", "I", "IR", "RI",
1.299 schwarze 351: "nf", "fi",
1.294 schwarze 352: "RE", "RS", "DT", "UC",
1.297 schwarze 353: "PD", "AT", "in",
1.333 schwarze 354: "SY", "YS", "OP",
355: "EX", "EE", "UR",
1.317 schwarze 356: "UE", "MT", "ME", NULL
1.294 schwarze 357: };
358: const char *const *roff_name = __roff_name;
359:
360: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 361: { roff_br, NULL, NULL, 0 }, /* br */
1.305 schwarze 362: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.297 schwarze 363: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 364: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 365: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.312 schwarze 366: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 367: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 368: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 369: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 370: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 371: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 372: { roff_unsupp, NULL, NULL, 0 }, /* ab */
373: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
374: { roff_line_ignore, NULL, NULL, 0 }, /* af */
375: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 376: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 377: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
378: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
379: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
380: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
381: { roff_ds, NULL, NULL, 0 }, /* as */
382: { roff_ds, NULL, NULL, 0 }, /* as1 */
383: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
384: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
385: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
386: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
387: { roff_unsupp, NULL, NULL, 0 }, /* blm */
388: { roff_unsupp, NULL, NULL, 0 }, /* box */
389: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
390: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
391: { roff_unsupp, NULL, NULL, 0 }, /* BP */
392: { roff_unsupp, NULL, NULL, 0 }, /* break */
393: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
394: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 395: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 396: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
397: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
398: { roff_cc, NULL, NULL, 0 }, /* cc */
399: { roff_insec, NULL, NULL, 0 }, /* cf */
400: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
401: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.341 schwarze 402: { roff_char, NULL, NULL, 0 }, /* char */
1.295 schwarze 403: { roff_unsupp, NULL, NULL, 0 }, /* chop */
404: { roff_line_ignore, NULL, NULL, 0 }, /* class */
405: { roff_insec, NULL, NULL, 0 }, /* close */
406: { roff_unsupp, NULL, NULL, 0 }, /* CL */
407: { roff_line_ignore, NULL, NULL, 0 }, /* color */
408: { roff_unsupp, NULL, NULL, 0 }, /* composite */
409: { roff_unsupp, NULL, NULL, 0 }, /* continue */
410: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
411: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
412: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
413: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
414: { roff_unsupp, NULL, NULL, 0 }, /* da */
415: { roff_unsupp, NULL, NULL, 0 }, /* dch */
416: { roff_Dd, NULL, NULL, 0 }, /* Dd */
417: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
418: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
419: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
420: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
421: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
422: { roff_unsupp, NULL, NULL, 0 }, /* device */
423: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
424: { roff_unsupp, NULL, NULL, 0 }, /* di */
425: { roff_unsupp, NULL, NULL, 0 }, /* do */
426: { roff_ds, NULL, NULL, 0 }, /* ds */
427: { roff_ds, NULL, NULL, 0 }, /* ds1 */
428: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
429: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 430: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 431: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
432: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
433: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
434: { roff_unsupp, NULL, NULL, 0 }, /* em */
435: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 436: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 437: { roff_unsupp, NULL, NULL, 0 }, /* EP */
438: { roff_EQ, NULL, NULL, 0 }, /* EQ */
439: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
440: { roff_unsupp, NULL, NULL, 0 }, /* ev */
441: { roff_unsupp, NULL, NULL, 0 }, /* evc */
442: { roff_unsupp, NULL, NULL, 0 }, /* ex */
443: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
444: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
445: { roff_unsupp, NULL, NULL, 0 }, /* fc */
446: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
447: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
448: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
449: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
450: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
451: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
452: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
453: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
454: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
455: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
456: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
457: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
458: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
459: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
460: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
461: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
462: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
463: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
464: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
465: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
466: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
467: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
468: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
469: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
470: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
471: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
472: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
473: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
474: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
475: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
476: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
477: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
478: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
479: { roff_unsupp, NULL, NULL, 0 }, /* index */
480: { roff_it, NULL, NULL, 0 }, /* it */
481: { roff_unsupp, NULL, NULL, 0 }, /* itc */
482: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
483: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
484: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
485: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
486: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
487: { roff_unsupp, NULL, NULL, 0 }, /* lc */
488: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
489: { roff_unsupp, NULL, NULL, 0 }, /* lds */
490: { roff_unsupp, NULL, NULL, 0 }, /* length */
491: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
492: { roff_insec, NULL, NULL, 0 }, /* lf */
493: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
494: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
495: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
496: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
497: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
498: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
499: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
500: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
501: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
502: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
503: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
504: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
505: { roff_insec, NULL, NULL, 0 }, /* mso */
506: { roff_line_ignore, NULL, NULL, 0 }, /* na */
507: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
508: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
509: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
510: { roff_unsupp, NULL, NULL, 0 }, /* nm */
511: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 512: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 513: { roff_nr, NULL, NULL, 0 }, /* nr */
514: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
515: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
516: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
517: { roff_insec, NULL, NULL, 0 }, /* nx */
518: { roff_insec, NULL, NULL, 0 }, /* open */
519: { roff_insec, NULL, NULL, 0 }, /* opena */
520: { roff_line_ignore, NULL, NULL, 0 }, /* os */
521: { roff_unsupp, NULL, NULL, 0 }, /* output */
522: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
523: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
524: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
525: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
526: { roff_insec, NULL, NULL, 0 }, /* pi */
527: { roff_unsupp, NULL, NULL, 0 }, /* PI */
528: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
529: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
530: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
531: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
532: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
533: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
534: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
535: { roff_insec, NULL, NULL, 0 }, /* pso */
536: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
537: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
538: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
539: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
540: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 schwarze 541: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 542: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
543: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
544: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 545: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 546: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
547: { roff_rr, NULL, NULL, 0 }, /* rr */
548: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
549: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
550: { roff_unsupp, NULL, NULL, 0 }, /* schar */
551: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
552: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 schwarze 553: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 554: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
555: { roff_so, NULL, NULL, 0 }, /* so */
556: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
557: { roff_line_ignore, NULL, NULL, 0 }, /* special */
558: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
559: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
560: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
561: { roff_unsupp, NULL, NULL, 0 }, /* substring */
562: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
563: { roff_insec, NULL, NULL, 0 }, /* sy */
564: { roff_T_, NULL, NULL, 0 }, /* T& */
565: { roff_unsupp, NULL, NULL, 0 }, /* tc */
566: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 567: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 568: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
569: { roff_unsupp, NULL, NULL, 0 }, /* tl */
570: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
571: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
572: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
573: { roff_tr, NULL, NULL, 0 }, /* tr */
574: { roff_line_ignore, NULL, NULL, 0 }, /* track */
575: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
576: { roff_insec, NULL, NULL, 0 }, /* trf */
577: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
578: { roff_unsupp, NULL, NULL, 0 }, /* trin */
579: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
580: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
581: { roff_TS, NULL, NULL, 0 }, /* TS */
582: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
583: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
584: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
585: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
586: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
587: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
588: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
589: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
590: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
591: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
592: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
593: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
594: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.340 schwarze 595: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.295 schwarze 596: { roff_insec, NULL, NULL, 0 }, /* write */
597: { roff_insec, NULL, NULL, 0 }, /* writec */
598: { roff_insec, NULL, NULL, 0 }, /* writem */
599: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
600: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 601: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 602: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 603: };
604:
1.141 kristaps 605: /* Array of injected predefined strings. */
606: #define PREDEFS_MAX 38
607: static const struct predef predefs[PREDEFS_MAX] = {
608: #include "predefs.in"
609: };
610:
1.305 schwarze 611: static int roffce_lines; /* number of input lines to center */
612: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 613: static int roffit_lines; /* number of lines to delay */
614: static char *roffit_macro; /* nil-terminated macro line */
615:
1.207 schwarze 616:
1.266 schwarze 617: /* --- request table ------------------------------------------------------ */
618:
1.295 schwarze 619: struct ohash *
620: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 621: {
1.295 schwarze 622: struct ohash *htab;
623: struct roffreq *req;
624: enum roff_tok tok;
625: size_t sz;
626: unsigned int slot;
1.85 kristaps 627:
1.295 schwarze 628: htab = mandoc_malloc(sizeof(*htab));
629: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 630:
1.295 schwarze 631: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 632: if (roff_name[tok] == NULL)
633: continue;
1.295 schwarze 634: sz = strlen(roff_name[tok]);
635: req = mandoc_malloc(sizeof(*req) + sz + 1);
636: req->tok = tok;
637: memcpy(req->name, roff_name[tok], sz + 1);
638: slot = ohash_qlookup(htab, req->name);
639: ohash_insert(htab, slot, req);
1.85 kristaps 640: }
1.295 schwarze 641: return htab;
1.85 kristaps 642: }
643:
1.295 schwarze 644: void
645: roffhash_free(struct ohash *htab)
1.67 kristaps 646: {
1.295 schwarze 647: struct roffreq *req;
648: unsigned int slot;
1.67 kristaps 649:
1.295 schwarze 650: if (htab == NULL)
651: return;
652: for (req = ohash_first(htab, &slot); req != NULL;
653: req = ohash_next(htab, &slot))
654: free(req);
655: ohash_delete(htab);
656: free(htab);
657: }
658:
659: enum roff_tok
660: roffhash_find(struct ohash *htab, const char *name, size_t sz)
661: {
662: struct roffreq *req;
663: const char *end;
664:
665: if (sz) {
666: end = name + sz;
667: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
668: } else
669: req = ohash_find(htab, ohash_qlookup(htab, name));
670: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 671: }
672:
1.266 schwarze 673: /* --- stack of request blocks -------------------------------------------- */
674:
1.67 kristaps 675: /*
676: * Pop the current node off of the stack of roff instructions currently
677: * pending.
678: */
1.340 schwarze 679: static int
1.67 kristaps 680: roffnode_pop(struct roff *r)
681: {
682: struct roffnode *p;
1.340 schwarze 683: int inloop;
1.67 kristaps 684:
1.207 schwarze 685: p = r->last;
1.340 schwarze 686: inloop = p->tok == ROFF_while;
687: r->last = p->parent;
1.106 kristaps 688: free(p->name);
689: free(p->end);
1.67 kristaps 690: free(p);
1.340 schwarze 691: return inloop;
1.67 kristaps 692: }
693:
694: /*
695: * Push a roff node onto the instruction stack. This must later be
696: * removed with roffnode_pop().
697: */
1.98 schwarze 698: static void
1.294 schwarze 699: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 700: int line, int col)
1.67 kristaps 701: {
702: struct roffnode *p;
703:
1.98 schwarze 704: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 705: p->tok = tok;
1.106 kristaps 706: if (name)
707: p->name = mandoc_strdup(name);
1.67 kristaps 708: p->parent = r->last;
709: p->line = line;
710: p->col = col;
1.198 schwarze 711: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 712:
713: r->last = p;
714: }
715:
1.266 schwarze 716: /* --- roff parser state data management ---------------------------------- */
717:
1.67 kristaps 718: static void
719: roff_free1(struct roff *r)
720: {
1.167 kristaps 721: int i;
1.67 kristaps 722:
1.346 schwarze 723: tbl_free(r->first_tbl);
1.113 kristaps 724: r->first_tbl = r->last_tbl = r->tbl = NULL;
725:
1.347 schwarze 726: eqn_free(r->last_eqn);
1.319 schwarze 727: r->last_eqn = r->eqn = NULL;
1.125 kristaps 728:
1.339 schwarze 729: while (r->mstackpos >= 0)
730: roff_userret(r);
731:
1.67 kristaps 732: while (r->last)
733: roffnode_pop(r);
1.109 kristaps 734:
1.223 schwarze 735: free (r->rstack);
736: r->rstack = NULL;
737: r->rstacksz = 0;
738: r->rstackpos = -1;
739:
740: roff_freereg(r->regtab);
741: r->regtab = NULL;
742:
1.167 kristaps 743: roff_freestr(r->strtab);
1.306 schwarze 744: roff_freestr(r->rentab);
1.167 kristaps 745: roff_freestr(r->xmbtab);
1.306 schwarze 746: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 747:
748: if (r->xtab)
749: for (i = 0; i < 128; i++)
750: free(r->xtab[i].p);
751: free(r->xtab);
752: r->xtab = NULL;
1.67 kristaps 753: }
754:
755: void
756: roff_reset(struct roff *r)
757: {
758: roff_free1(r);
1.227 schwarze 759: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 760: r->control = '\0';
761: r->escape = '\\';
1.307 schwarze 762: roffce_lines = 0;
763: roffce_node = NULL;
764: roffit_lines = 0;
765: roffit_macro = NULL;
1.67 kristaps 766: }
767:
768: void
769: roff_free(struct roff *r)
770: {
1.339 schwarze 771: int i;
772:
1.67 kristaps 773: roff_free1(r);
1.339 schwarze 774: for (i = 0; i < r->mstacksz; i++)
775: free(r->mstack[i].argv);
776: free(r->mstack);
1.295 schwarze 777: roffhash_free(r->reqtab);
1.67 kristaps 778: free(r);
779: }
780:
781: struct roff *
1.279 schwarze 782: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 783: {
784: struct roff *r;
785:
1.98 schwarze 786: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 787: r->parse = parse;
1.328 schwarze 788: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.199 schwarze 789: r->options = options;
1.227 schwarze 790: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 791: r->mstackpos = -1;
1.82 kristaps 792: r->rstackpos = -1;
1.303 schwarze 793: r->escape = '\\';
1.277 schwarze 794: return r;
1.265 schwarze 795: }
796:
1.266 schwarze 797: /* --- syntax tree state data management ---------------------------------- */
798:
1.265 schwarze 799: static void
800: roff_man_free1(struct roff_man *man)
801: {
802:
1.266 schwarze 803: if (man->first != NULL)
804: roff_node_delete(man, man->first);
1.265 schwarze 805: free(man->meta.msec);
806: free(man->meta.vol);
807: free(man->meta.os);
808: free(man->meta.arch);
809: free(man->meta.title);
810: free(man->meta.name);
811: free(man->meta.date);
812: }
813:
814: static void
815: roff_man_alloc1(struct roff_man *man)
816: {
817:
818: memset(&man->meta, 0, sizeof(man->meta));
819: man->first = mandoc_calloc(1, sizeof(*man->first));
820: man->first->type = ROFFT_ROOT;
821: man->last = man->first;
822: man->last_es = NULL;
823: man->flags = 0;
824: man->macroset = MACROSET_NONE;
825: man->lastsec = man->lastnamed = SEC_NONE;
826: man->next = ROFF_NEXT_CHILD;
827: }
828:
829: void
830: roff_man_reset(struct roff_man *man)
831: {
832:
833: roff_man_free1(man);
834: roff_man_alloc1(man);
835: }
836:
837: void
838: roff_man_free(struct roff_man *man)
839: {
840:
841: roff_man_free1(man);
842: free(man);
843: }
844:
845: struct roff_man *
846: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.316 schwarze 847: const char *os_s, int quick)
1.265 schwarze 848: {
849: struct roff_man *man;
850:
851: man = mandoc_calloc(1, sizeof(*man));
852: man->parse = parse;
853: man->roff = roff;
1.316 schwarze 854: man->os_s = os_s;
1.265 schwarze 855: man->quick = quick;
856: roff_man_alloc1(man);
1.296 schwarze 857: roff->man = man;
1.277 schwarze 858: return man;
1.67 kristaps 859: }
860:
1.266 schwarze 861: /* --- syntax tree handling ----------------------------------------------- */
862:
863: struct roff_node *
864: roff_node_alloc(struct roff_man *man, int line, int pos,
865: enum roff_type type, int tok)
866: {
867: struct roff_node *n;
868:
869: n = mandoc_calloc(1, sizeof(*n));
870: n->line = line;
871: n->pos = pos;
872: n->tok = tok;
873: n->type = type;
874: n->sec = man->lastsec;
875:
876: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 877: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 878: else
1.285 schwarze 879: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 880: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 881: n->flags |= NODE_LINE;
1.266 schwarze 882: man->flags &= ~MDOC_NEWLINE;
883:
1.277 schwarze 884: return n;
1.266 schwarze 885: }
886:
887: void
888: roff_node_append(struct roff_man *man, struct roff_node *n)
889: {
890:
891: switch (man->next) {
892: case ROFF_NEXT_SIBLING:
1.281 schwarze 893: if (man->last->next != NULL) {
894: n->next = man->last->next;
895: man->last->next->prev = n;
896: } else
897: man->last->parent->last = n;
1.266 schwarze 898: man->last->next = n;
899: n->prev = man->last;
900: n->parent = man->last->parent;
901: break;
902: case ROFF_NEXT_CHILD:
1.287 schwarze 903: if (man->last->child != NULL) {
904: n->next = man->last->child;
905: man->last->child->prev = n;
906: } else
907: man->last->last = n;
1.266 schwarze 908: man->last->child = n;
909: n->parent = man->last;
910: break;
911: default:
912: abort();
913: }
1.282 schwarze 914: man->last = n;
1.266 schwarze 915:
916: switch (n->type) {
917: case ROFFT_HEAD:
918: n->parent->head = n;
919: break;
920: case ROFFT_BODY:
1.282 schwarze 921: if (n->end != ENDBODY_NOT)
922: return;
1.266 schwarze 923: n->parent->body = n;
924: break;
925: case ROFFT_TAIL:
926: n->parent->tail = n;
927: break;
928: default:
1.282 schwarze 929: return;
1.266 schwarze 930: }
1.282 schwarze 931:
932: /*
933: * Copy over the normalised-data pointer of our parent. Not
934: * everybody has one, but copying a null pointer is fine.
935: */
936:
937: n->norm = n->parent->norm;
938: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 939: }
940:
1.267 schwarze 941: void
942: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
943: {
944: struct roff_node *n;
945:
946: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
947: n->string = roff_strdup(man->roff, word);
948: roff_node_append(man, n);
1.286 schwarze 949: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 950: man->next = ROFF_NEXT_SIBLING;
951: }
952:
953: void
954: roff_word_append(struct roff_man *man, const char *word)
955: {
956: struct roff_node *n;
957: char *addstr, *newstr;
958:
959: n = man->last;
960: addstr = roff_strdup(man->roff, word);
961: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
962: free(addstr);
963: free(n->string);
964: n->string = newstr;
965: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 966: }
967:
968: void
969: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
970: {
971: struct roff_node *n;
972:
973: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
974: roff_node_append(man, n);
975: man->next = ROFF_NEXT_CHILD;
976: }
977:
978: struct roff_node *
979: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
980: {
981: struct roff_node *n;
982:
983: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
984: roff_node_append(man, n);
985: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 986: return n;
1.267 schwarze 987: }
988:
1.266 schwarze 989: struct roff_node *
990: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
991: {
992: struct roff_node *n;
993:
994: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
995: roff_node_append(man, n);
996: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 997: return n;
1.266 schwarze 998: }
999:
1000: struct roff_node *
1001: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1002: {
1003: struct roff_node *n;
1004:
1005: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1006: roff_node_append(man, n);
1007: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1008: return n;
1.267 schwarze 1009: }
1010:
1.321 schwarze 1011: static void
1.346 schwarze 1012: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1013: {
1014: struct roff_node *n;
1.346 schwarze 1015: struct tbl_span *span;
1.267 schwarze 1016:
1017: if (man->macroset == MACROSET_MAN)
1.302 schwarze 1018: man_breakscope(man, ROFF_TS);
1.321 schwarze 1019: while ((span = tbl_span(tbl)) != NULL) {
1.346 schwarze 1020: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1021: n->span = span;
1022: roff_node_append(man, n);
1023: n->flags |= NODE_VALID | NODE_ENDED;
1024: man->next = ROFF_NEXT_SIBLING;
1025: }
1.266 schwarze 1026: }
1027:
1028: void
1029: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1030: {
1031:
1032: /* Adjust siblings. */
1033:
1034: if (n->prev)
1035: n->prev->next = n->next;
1036: if (n->next)
1037: n->next->prev = n->prev;
1038:
1039: /* Adjust parent. */
1040:
1041: if (n->parent != NULL) {
1042: if (n->parent->child == n)
1043: n->parent->child = n->next;
1044: if (n->parent->last == n)
1045: n->parent->last = n->prev;
1046: }
1047:
1048: /* Adjust parse point. */
1049:
1050: if (man == NULL)
1051: return;
1052: if (man->last == n) {
1053: if (n->prev == NULL) {
1054: man->last = n->parent;
1055: man->next = ROFF_NEXT_CHILD;
1056: } else {
1057: man->last = n->prev;
1058: man->next = ROFF_NEXT_SIBLING;
1059: }
1060: }
1061: if (man->first == n)
1062: man->first = NULL;
1.344 schwarze 1063: }
1064:
1065: void
1066: roff_node_relink(struct roff_man *man, struct roff_node *n)
1067: {
1068: roff_node_unlink(man, n);
1069: n->prev = n->next = NULL;
1070: roff_node_append(man, n);
1.266 schwarze 1071: }
1072:
1073: void
1074: roff_node_free(struct roff_node *n)
1075: {
1076:
1077: if (n->args != NULL)
1078: mdoc_argv_free(n->args);
1079: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1080: free(n->norm);
1.347 schwarze 1081: eqn_box_free(n->eqn);
1.266 schwarze 1082: free(n->string);
1083: free(n);
1084: }
1085:
1086: void
1087: roff_node_delete(struct roff_man *man, struct roff_node *n)
1088: {
1089:
1090: while (n->child != NULL)
1091: roff_node_delete(man, n->child);
1092: roff_node_unlink(man, n);
1093: roff_node_free(n);
1.269 schwarze 1094: }
1095:
1096: void
1097: deroff(char **dest, const struct roff_node *n)
1098: {
1099: char *cp;
1100: size_t sz;
1101:
1102: if (n->type != ROFFT_TEXT) {
1103: for (n = n->child; n != NULL; n = n->next)
1104: deroff(dest, n);
1105: return;
1106: }
1107:
1.288 schwarze 1108: /* Skip leading whitespace. */
1.269 schwarze 1109:
1.288 schwarze 1110: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1111: if (cp[0] == '\\' && cp[1] != '\0' &&
1112: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1113: cp++;
1.288 schwarze 1114: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1115: break;
1116: }
1117:
1.289 schwarze 1118: /* Skip trailing backslash. */
1119:
1120: sz = strlen(cp);
1.290 schwarze 1121: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1122: sz--;
1123:
1.269 schwarze 1124: /* Skip trailing whitespace. */
1125:
1.289 schwarze 1126: for (; sz; sz--)
1.269 schwarze 1127: if ( ! isspace((unsigned char)cp[sz-1]))
1128: break;
1129:
1130: /* Skip empty strings. */
1131:
1132: if (sz == 0)
1133: return;
1134:
1135: if (*dest == NULL) {
1136: *dest = mandoc_strndup(cp, sz);
1137: return;
1138: }
1139:
1140: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1141: free(*dest);
1142: *dest = cp;
1.266 schwarze 1143: }
1144:
1145: /* --- main functions of the roff parser ---------------------------------- */
1146:
1.94 kristaps 1147: /*
1.206 schwarze 1148: * In the current line, expand escape sequences that tend to get
1149: * used in numerical expressions and conditional requests.
1150: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1151: */
1.340 schwarze 1152: static int
1.238 schwarze 1153: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1154: {
1.339 schwarze 1155: struct mctx *ctx; /* current macro call context */
1.208 schwarze 1156: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1157: struct roff_node *n; /* used for header comments */
1.205 schwarze 1158: const char *start; /* start of the string to process */
1.209 schwarze 1159: char *stesc; /* start of an escape sequence ('\\') */
1.328 schwarze 1160: char *ep; /* end of comment string */
1.108 schwarze 1161: const char *stnam; /* start of the name, after "[(*" */
1162: const char *cp; /* end of the name, e.g. before ']' */
1163: const char *res; /* the string to be substituted */
1.238 schwarze 1164: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1165: size_t maxl; /* expected length of the escape name */
1166: size_t naml; /* actual length of the escape name */
1.339 schwarze 1167: size_t asz; /* length of the replacement */
1168: size_t rsz; /* length of the rest of the string */
1.237 schwarze 1169: enum mandoc_esc esc; /* type of the escape sequence */
1170: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1171: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1172: int npos; /* position in numeric expression */
1.218 schwarze 1173: int arg_complete; /* argument not interrupted by eol */
1.339 schwarze 1174: int quote_args; /* true for \\$@, false for \\$* */
1.303 schwarze 1175: int done; /* no more input available */
1.315 schwarze 1176: int deftype; /* type of definition to paste */
1.323 schwarze 1177: int rcsid; /* kind of RCS id seen */
1.327 schwarze 1178: char sign; /* increment number register */
1.206 schwarze 1179: char term; /* character terminating the escape */
1.94 kristaps 1180:
1.303 schwarze 1181: /* Search forward for comments. */
1182:
1183: done = 0;
1184: start = buf->buf + pos;
1185: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1186: if (stesc[0] != r->escape || stesc[1] == '\0')
1187: continue;
1188: stesc++;
1189: if (*stesc != '"' && *stesc != '#')
1190: continue;
1.313 schwarze 1191:
1192: /* Comment found, look for RCS id. */
1193:
1.323 schwarze 1194: rcsid = 0;
1.313 schwarze 1195: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1196: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1197: cp += 8;
1198: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1199: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1200: cp += 7;
1201: }
1202: if (cp != NULL &&
1203: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1204: strchr(cp, '$') != NULL) {
1.323 schwarze 1205: if (r->man->meta.rcsids & rcsid)
1.314 schwarze 1206: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1207: ln, stesc + 1 - buf->buf, stesc + 1);
1.323 schwarze 1208: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1209: }
1.313 schwarze 1210:
1211: /* Handle trailing whitespace. */
1212:
1.328 schwarze 1213: ep = strchr(stesc--, '\0') - 1;
1214: if (*ep == '\n') {
1.303 schwarze 1215: done = 1;
1.328 schwarze 1216: ep--;
1.303 schwarze 1217: }
1.328 schwarze 1218: if (*ep == ' ' || *ep == '\t')
1.303 schwarze 1219: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1.328 schwarze 1220: ln, ep - buf->buf, NULL);
1221:
1222: /*
1223: * Save comments preceding the title macro
1224: * in the syntax tree.
1225: */
1226:
1227: if (r->format == 0) {
1228: while (*ep == ' ' || *ep == '\t')
1229: ep--;
1230: ep[1] = '\0';
1231: n = roff_node_alloc(r->man,
1232: ln, stesc + 1 - buf->buf,
1233: ROFFT_COMMENT, TOKEN_NONE);
1234: n->string = mandoc_strdup(stesc + 2);
1235: roff_node_append(r->man, n);
1236: n->flags |= NODE_VALID | NODE_ENDED;
1237: r->man->next = ROFF_NEXT_SIBLING;
1238: }
1239:
1.334 schwarze 1240: /* Line continuation with comment. */
1241:
1242: if (stesc[1] == '#') {
1243: *stesc = '\0';
1.340 schwarze 1244: return ROFF_IGN | ROFF_APPEND;
1.334 schwarze 1245: }
1246:
1247: /* Discard normal comments. */
1.328 schwarze 1248:
1.335 schwarze 1249: while (stesc > start && stesc[-1] == ' ' &&
1250: (stesc == start + 1 || stesc[-2] != '\\'))
1.303 schwarze 1251: stesc--;
1252: *stesc = '\0';
1253: break;
1254: }
1255: if (stesc == start)
1256: return ROFF_CONT;
1257: stesc--;
1258:
1259: /* Notice the end of the input. */
1260:
1261: if (*stesc == '\n') {
1262: *stesc-- = '\0';
1263: done = 1;
1264: }
1265:
1.170 schwarze 1266: expand_count = 0;
1.303 schwarze 1267: while (stesc >= start) {
1.170 schwarze 1268:
1.205 schwarze 1269: /* Search backwards for the next backslash. */
1270:
1.303 schwarze 1271: if (*stesc != r->escape) {
1272: if (*stesc == '\\') {
1273: *stesc = '\0';
1274: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1275: buf->buf, stesc + 1) + 1;
1276: start = nbuf + pos;
1277: stesc = nbuf + (stesc - buf->buf);
1278: free(buf->buf);
1279: buf->buf = nbuf;
1280: }
1281: stesc--;
1.205 schwarze 1282: continue;
1.303 schwarze 1283: }
1.205 schwarze 1284:
1285: /* If it is escaped, skip it. */
1286:
1287: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1288: if (*cp != r->escape)
1.205 schwarze 1289: break;
1290:
1.238 schwarze 1291: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1292: while (stesc > cp)
1293: *stesc-- = '\\';
1.205 schwarze 1294: continue;
1.303 schwarze 1295: } else if (stesc[1] != '\0') {
1296: *stesc = '\\';
1297: } else {
1298: *stesc-- = '\0';
1299: if (done)
1300: continue;
1301: else
1.340 schwarze 1302: return ROFF_IGN | ROFF_APPEND;
1.205 schwarze 1303: }
1.108 schwarze 1304:
1.206 schwarze 1305: /* Decide whether to expand or to check only. */
1.108 schwarze 1306:
1.206 schwarze 1307: term = '\0';
1.205 schwarze 1308: cp = stesc + 1;
1.181 schwarze 1309: switch (*cp) {
1.207 schwarze 1310: case '*':
1.339 schwarze 1311: case '$':
1.181 schwarze 1312: res = NULL;
1313: break;
1.207 schwarze 1314: case 'B':
1315: case 'w':
1.206 schwarze 1316: term = cp[1];
1317: /* FALLTHROUGH */
1.207 schwarze 1318: case 'n':
1.327 schwarze 1319: sign = cp[1];
1320: if (sign == '+' || sign == '-')
1321: cp++;
1.181 schwarze 1322: res = ubuf;
1323: break;
1324: default:
1.237 schwarze 1325: esc = mandoc_escape(&cp, &stnam, &inaml);
1326: if (esc == ESCAPE_ERROR ||
1327: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1328: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1329: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1330: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1331: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1332: stesc--;
1.205 schwarze 1333: continue;
1.152 kristaps 1334: }
1335:
1.205 schwarze 1336: if (EXPAND_LIMIT < ++expand_count) {
1337: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1338: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1339: return ROFF_IGN;
1.205 schwarze 1340: }
1.108 schwarze 1341:
1342: /*
1343: * The third character decides the length
1.181 schwarze 1344: * of the name of the string or register.
1.108 schwarze 1345: * Save a pointer to the name.
1346: */
1347:
1.238 schwarze 1348: if (term == '\0') {
1.206 schwarze 1349: switch (*++cp) {
1.207 schwarze 1350: case '\0':
1.206 schwarze 1351: maxl = 0;
1352: break;
1.207 schwarze 1353: case '(':
1.206 schwarze 1354: cp++;
1355: maxl = 2;
1356: break;
1.207 schwarze 1357: case '[':
1.206 schwarze 1358: cp++;
1359: term = ']';
1360: maxl = 0;
1361: break;
1362: default:
1363: maxl = 1;
1364: break;
1365: }
1366: } else {
1367: cp += 2;
1.94 kristaps 1368: maxl = 0;
1369: }
1.108 schwarze 1370: stnam = cp;
1.94 kristaps 1371:
1.108 schwarze 1372: /* Advance to the end of the name. */
1.94 kristaps 1373:
1.253 schwarze 1374: naml = 0;
1.218 schwarze 1375: arg_complete = 1;
1.253 schwarze 1376: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1377: if (*cp == '\0') {
1.219 schwarze 1378: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1379: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1380: arg_complete = 0;
1.206 schwarze 1381: break;
1.153 kristaps 1382: }
1.238 schwarze 1383: if (maxl == 0 && *cp == term) {
1.206 schwarze 1384: cp++;
1.253 schwarze 1385: break;
1386: }
1387: if (*cp++ != '\\' || stesc[1] != 'w') {
1388: naml++;
1389: continue;
1390: }
1391: switch (mandoc_escape(&cp, NULL, NULL)) {
1392: case ESCAPE_SPECIAL:
1393: case ESCAPE_UNICODE:
1394: case ESCAPE_NUMBERED:
1395: case ESCAPE_OVERSTRIKE:
1396: naml++;
1397: break;
1398: default:
1.94 kristaps 1399: break;
1.206 schwarze 1400: }
1.94 kristaps 1401: }
1402:
1.108 schwarze 1403: /*
1404: * Retrieve the replacement string; if it is
1405: * undefined, resume searching for escapes.
1406: */
1407:
1.206 schwarze 1408: switch (stesc[1]) {
1.207 schwarze 1409: case '*':
1.315 schwarze 1410: if (arg_complete) {
1411: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1412: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1413:
1414: /*
1415: * If not overriden, let \*(.T
1416: * through to the formatters.
1417: */
1418:
1419: if (res == NULL && naml == 2 &&
1420: stnam[0] == '.' && stnam[1] == 'T') {
1421: roff_setstrn(&r->strtab,
1422: ".T", 2, NULL, 0, 0);
1423: stesc--;
1424: continue;
1425: }
1.315 schwarze 1426: }
1.206 schwarze 1427: break;
1.339 schwarze 1428: case '$':
1429: if (r->mstackpos < 0) {
1430: mandoc_vmsg(MANDOCERR_ARG_UNDEF,
1431: r->parse, ln, (int)(stesc - buf->buf),
1432: "%.3s", stesc);
1433: break;
1434: }
1435: ctx = r->mstack + r->mstackpos;
1436: npos = stesc[2] - '1';
1437: if (npos >= 0 && npos <= 8) {
1438: res = npos < ctx->argc ?
1439: ctx->argv[npos] : "";
1440: break;
1441: }
1442: if (stesc[2] == '*')
1443: quote_args = 0;
1444: else if (stesc[2] == '@')
1445: quote_args = 1;
1446: else {
1447: mandoc_vmsg(MANDOCERR_ARG_NONUM,
1448: r->parse, ln, (int)(stesc - buf->buf),
1449: "%.3s", stesc);
1450: break;
1451: }
1452: asz = 0;
1453: for (npos = 0; npos < ctx->argc; npos++) {
1454: if (npos)
1455: asz++; /* blank */
1456: if (quote_args)
1457: asz += 2; /* quotes */
1458: asz += strlen(ctx->argv[npos]);
1459: }
1460: if (asz != 3) {
1461: rsz = buf->sz - (stesc - buf->buf) - 3;
1462: if (asz < 3)
1463: memmove(stesc + asz, stesc + 3, rsz);
1464: buf->sz += asz - 3;
1465: nbuf = mandoc_realloc(buf->buf, buf->sz);
1466: start = nbuf + pos;
1467: stesc = nbuf + (stesc - buf->buf);
1468: buf->buf = nbuf;
1469: if (asz > 3)
1470: memmove(stesc + asz, stesc + 3, rsz);
1471: }
1472: for (npos = 0; npos < ctx->argc; npos++) {
1473: if (npos)
1474: *stesc++ = ' ';
1475: if (quote_args)
1476: *stesc++ = '"';
1477: cp = ctx->argv[npos];
1478: while (*cp != '\0')
1479: *stesc++ = *cp++;
1480: if (quote_args)
1481: *stesc++ = '"';
1482: }
1483: continue;
1.207 schwarze 1484: case 'B':
1.206 schwarze 1485: npos = 0;
1.218 schwarze 1486: ubuf[0] = arg_complete &&
1.261 schwarze 1487: roff_evalnum(r, ln, stnam, &npos,
1488: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1489: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1490: ubuf[1] = '\0';
1491: break;
1.207 schwarze 1492: case 'n':
1.218 schwarze 1493: if (arg_complete)
1494: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1495: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1496: else
1497: ubuf[0] = '\0';
1.206 schwarze 1498: break;
1.207 schwarze 1499: case 'w':
1.218 schwarze 1500: /* use even incomplete args */
1.208 schwarze 1501: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1502: 24 * (int)naml);
1503: break;
1504: }
1.94 kristaps 1505:
1.238 schwarze 1506: if (res == NULL) {
1.339 schwarze 1507: if (stesc[1] == '*')
1508: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1509: r->parse, ln, (int)(stesc - buf->buf),
1510: "%.*s", (int)naml, stnam);
1.142 kristaps 1511: res = "";
1.246 schwarze 1512: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1513: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1514: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1515: return ROFF_IGN;
1.94 kristaps 1516: }
1517:
1.108 schwarze 1518: /* Replace the escape sequence by the string. */
1519:
1.209 schwarze 1520: *stesc = '\0';
1.238 schwarze 1521: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1522: buf->buf, res, cp) + 1;
1.94 kristaps 1523:
1.205 schwarze 1524: /* Prepare for the next replacement. */
1.94 kristaps 1525:
1.205 schwarze 1526: start = nbuf + pos;
1.238 schwarze 1527: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1528: free(buf->buf);
1529: buf->buf = nbuf;
1.154 kristaps 1530: }
1.277 schwarze 1531: return ROFF_CONT;
1.154 kristaps 1532: }
1533:
1534: /*
1.275 schwarze 1535: * Process text streams.
1.154 kristaps 1536: */
1.340 schwarze 1537: static int
1.305 schwarze 1538: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1539: {
1540: size_t sz;
1541: const char *start;
1.178 schwarze 1542: char *p;
1543: int isz;
1.154 kristaps 1544: enum mandoc_esc esc;
1545:
1.275 schwarze 1546: /* Spring the input line trap. */
1547:
1548: if (roffit_lines == 1) {
1549: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1550: free(buf->buf);
1551: buf->buf = p;
1552: buf->sz = isz + 1;
1553: *offs = 0;
1554: free(roffit_macro);
1555: roffit_lines = 0;
1.277 schwarze 1556: return ROFF_REPARSE;
1.275 schwarze 1557: } else if (roffit_lines > 1)
1558: --roffit_lines;
1559:
1.305 schwarze 1560: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1561: if (roffce_lines < 1) {
1562: r->man->last = roffce_node;
1563: r->man->next = ROFF_NEXT_SIBLING;
1564: roffce_lines = 0;
1565: roffce_node = NULL;
1566: } else
1567: roffce_lines--;
1568: }
1569:
1.275 schwarze 1570: /* Convert all breakable hyphens into ASCII_HYPH. */
1571:
1.238 schwarze 1572: start = p = buf->buf + pos;
1.154 kristaps 1573:
1.238 schwarze 1574: while (*p != '\0') {
1.154 kristaps 1575: sz = strcspn(p, "-\\");
1576: p += sz;
1577:
1.238 schwarze 1578: if (*p == '\0')
1.159 kristaps 1579: break;
1580:
1.238 schwarze 1581: if (*p == '\\') {
1.154 kristaps 1582: /* Skip over escapes. */
1583: p++;
1.189 schwarze 1584: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1585: if (esc == ESCAPE_ERROR)
1.154 kristaps 1586: break;
1.264 schwarze 1587: while (*p == '-')
1588: p++;
1.155 kristaps 1589: continue;
1.159 kristaps 1590: } else if (p == start) {
1.158 kristaps 1591: p++;
1.155 kristaps 1592: continue;
1.158 kristaps 1593: }
1.155 kristaps 1594:
1.171 schwarze 1595: if (isalpha((unsigned char)p[-1]) &&
1596: isalpha((unsigned char)p[1]))
1.155 kristaps 1597: *p = ASCII_HYPH;
1598: p++;
1.94 kristaps 1599: }
1.277 schwarze 1600: return ROFF_CONT;
1.94 kristaps 1601: }
1602:
1.340 schwarze 1603: int
1.238 schwarze 1604: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1605: {
1.294 schwarze 1606: enum roff_tok t;
1.340 schwarze 1607: int e;
1.238 schwarze 1608: int pos; /* parse point */
1.243 schwarze 1609: int spos; /* saved parse point for messages */
1.238 schwarze 1610: int ppos; /* original offset in buf->buf */
1611: int ctl; /* macro line (boolean) */
1612:
1613: ppos = pos = *offs;
1.79 kristaps 1614:
1.230 schwarze 1615: /* Handle in-line equation delimiters. */
1616:
1.236 schwarze 1617: if (r->tbl == NULL &&
1618: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1619: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1620: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1621: if (e == ROFF_REPARSE)
1.277 schwarze 1622: return e;
1.230 schwarze 1623: assert(e == ROFF_CONT);
1624: }
1625:
1626: /* Expand some escape sequences. */
1.94 kristaps 1627:
1.238 schwarze 1628: e = roff_res(r, buf, ln, pos);
1.340 schwarze 1629: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1630: return e;
1.238 schwarze 1631: assert(e == ROFF_CONT);
1.94 kristaps 1632:
1.238 schwarze 1633: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1634:
1.94 kristaps 1635: /*
1.79 kristaps 1636: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1637: * text through the macro's filter.
1638: * Equations process all content themselves.
1639: * Tables process almost all content themselves, but we want
1640: * to warn about macros before passing it there.
1.79 kristaps 1641: */
1.74 kristaps 1642:
1.252 schwarze 1643: if (r->last != NULL && ! ctl) {
1.78 kristaps 1644: t = r->last->tok;
1.238 schwarze 1645: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1646: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1647: return e;
1.340 schwarze 1648: e &= ~ROFF_MASK;
1649: } else
1650: e = ROFF_IGN;
1.319 schwarze 1651: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1652: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1653: return e;
1.319 schwarze 1654: }
1.321 schwarze 1655: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1656: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1657: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1658: return e;
1.321 schwarze 1659: }
1.252 schwarze 1660: if ( ! ctl)
1.340 schwarze 1661: return roff_parsetext(r, buf, pos, offs) | e;
1.228 schwarze 1662:
1663: /* Skip empty request lines. */
1664:
1.238 schwarze 1665: if (buf->buf[pos] == '"') {
1.228 schwarze 1666: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1667: ln, pos, NULL);
1.277 schwarze 1668: return ROFF_IGN;
1.238 schwarze 1669: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1670: return ROFF_IGN;
1.67 kristaps 1671:
1.79 kristaps 1672: /*
1673: * If a scope is open, go to the child handler for that macro,
1674: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1675: * Don't do so if an equation is open.
1.79 kristaps 1676: */
1.78 kristaps 1677:
1.79 kristaps 1678: if (r->last) {
1679: t = r->last->tok;
1.277 schwarze 1680: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1681: }
1.78 kristaps 1682:
1.243 schwarze 1683: /* No scope is open. This is a new request or macro. */
1684:
1685: spos = pos;
1686: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1687:
1688: /* Tables ignore most macros. */
1689:
1.308 schwarze 1690: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1691: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.243 schwarze 1692: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1693: ln, pos, buf->buf + spos);
1.308 schwarze 1694: if (t != TOKEN_NONE)
1.277 schwarze 1695: return ROFF_IGN;
1.257 schwarze 1696: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1697: pos++;
1.291 schwarze 1698: while (buf->buf[pos] == ' ')
1.257 schwarze 1699: pos++;
1.321 schwarze 1700: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1701: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1702: return ROFF_IGN;
1.243 schwarze 1703: }
1704:
1.305 schwarze 1705: /* For now, let high level macros abort .ce mode. */
1706:
1707: if (ctl && roffce_node != NULL &&
1.324 schwarze 1708: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1709: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1710: r->man->last = roffce_node;
1711: r->man->next = ROFF_NEXT_SIBLING;
1712: roffce_lines = 0;
1713: roffce_node = NULL;
1714: }
1715:
1.79 kristaps 1716: /*
1.243 schwarze 1717: * This is neither a roff request nor a user-defined macro.
1718: * Let the standard macro set parsers handle it.
1.79 kristaps 1719: */
1.67 kristaps 1720:
1.294 schwarze 1721: if (t == TOKEN_NONE)
1.277 schwarze 1722: return ROFF_CONT;
1.243 schwarze 1723:
1724: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1725:
1.296 schwarze 1726: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1727: }
1728:
1.339 schwarze 1729: /*
1730: * Internal interface function to tell the roff parser that execution
1731: * of the current macro ended. This is required because macro
1732: * definitions usually do not end with a .return request.
1733: */
1734: void
1735: roff_userret(struct roff *r)
1736: {
1737: struct mctx *ctx;
1738: int i;
1739:
1740: assert(r->mstackpos >= 0);
1741: ctx = r->mstack + r->mstackpos;
1742: for (i = 0; i < ctx->argc; i++)
1743: free(ctx->argv[i]);
1744: ctx->argc = 0;
1745: r->mstackpos--;
1746: }
1747:
1.117 kristaps 1748: void
1.74 kristaps 1749: roff_endparse(struct roff *r)
1750: {
1.321 schwarze 1751: if (r->last != NULL)
1.221 schwarze 1752: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1753: r->last->line, r->last->col,
1.295 schwarze 1754: roff_name[r->last->tok]);
1.117 kristaps 1755:
1.321 schwarze 1756: if (r->eqn != NULL) {
1.221 schwarze 1757: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.319 schwarze 1758: r->eqn->node->line, r->eqn->node->pos, "EQ");
1759: eqn_parse(r->eqn);
1760: r->eqn = NULL;
1.125 kristaps 1761: }
1762:
1.321 schwarze 1763: if (r->tbl != NULL) {
1.346 schwarze 1764: tbl_end(r->tbl, 1);
1.321 schwarze 1765: r->tbl = NULL;
1.117 kristaps 1766: }
1.67 kristaps 1767: }
1768:
1769: /*
1770: * Parse a roff node's type from the input buffer. This must be in the
1771: * form of ".foo xxx" in the usual way.
1772: */
1.294 schwarze 1773: static enum roff_tok
1.214 schwarze 1774: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1775: {
1.214 schwarze 1776: char *cp;
1.106 kristaps 1777: const char *mac;
1778: size_t maclen;
1.315 schwarze 1779: int deftype;
1.294 schwarze 1780: enum roff_tok t;
1.67 kristaps 1781:
1.214 schwarze 1782: cp = buf + *pos;
1783:
1784: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1785: return TOKEN_NONE;
1.67 kristaps 1786:
1.214 schwarze 1787: mac = cp;
1788: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1789:
1.315 schwarze 1790: deftype = ROFFDEF_USER | ROFFDEF_REN;
1791: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1792: switch (deftype) {
1793: case ROFFDEF_USER:
1794: t = ROFF_USERDEF;
1795: break;
1796: case ROFFDEF_REN:
1797: t = ROFF_RENAMED;
1798: break;
1799: default:
1800: t = roffhash_find(r->reqtab, mac, maclen);
1801: break;
1802: }
1.294 schwarze 1803: if (t != TOKEN_NONE)
1.214 schwarze 1804: *pos = cp - buf;
1.325 schwarze 1805: else if (deftype == ROFFDEF_UNDEF) {
1806: /* Using an undefined macro defines it to be empty. */
1807: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1808: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1809: }
1.277 schwarze 1810: return t;
1.67 kristaps 1811: }
1812:
1.266 schwarze 1813: /* --- handling of request blocks ----------------------------------------- */
1814:
1.340 schwarze 1815: static int
1.76 kristaps 1816: roff_cblock(ROFF_ARGS)
1.67 kristaps 1817: {
1818:
1.79 kristaps 1819: /*
1820: * A block-close `..' should only be invoked as a child of an
1821: * ignore macro, otherwise raise a warning and just ignore it.
1822: */
1823:
1.238 schwarze 1824: if (r->last == NULL) {
1.221 schwarze 1825: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1826: ln, ppos, "..");
1.277 schwarze 1827: return ROFF_IGN;
1.76 kristaps 1828: }
1.67 kristaps 1829:
1.81 kristaps 1830: switch (r->last->tok) {
1.207 schwarze 1831: case ROFF_am:
1.220 schwarze 1832: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1833: case ROFF_ami:
1834: case ROFF_de:
1.108 schwarze 1835: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1836: case ROFF_dei:
1837: case ROFF_ig:
1.81 kristaps 1838: break;
1839: default:
1.221 schwarze 1840: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1841: ln, ppos, "..");
1.277 schwarze 1842: return ROFF_IGN;
1.76 kristaps 1843: }
1.67 kristaps 1844:
1.238 schwarze 1845: if (buf->buf[pos] != '\0')
1.217 schwarze 1846: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1847: ".. %s", buf->buf + pos);
1.71 kristaps 1848:
1849: roffnode_pop(r);
1.76 kristaps 1850: roffnode_cleanscope(r);
1.277 schwarze 1851: return ROFF_IGN;
1.71 kristaps 1852:
1.67 kristaps 1853: }
1854:
1.340 schwarze 1855: static int
1.76 kristaps 1856: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1857: {
1.340 schwarze 1858: int inloop;
1.67 kristaps 1859:
1.340 schwarze 1860: inloop = 0;
1861: while (r->last != NULL) {
1.173 schwarze 1862: if (--r->last->endspan != 0)
1.76 kristaps 1863: break;
1.340 schwarze 1864: inloop += roffnode_pop(r);
1.76 kristaps 1865: }
1.340 schwarze 1866: return inloop;
1.67 kristaps 1867: }
1868:
1.340 schwarze 1869: static int
1.195 schwarze 1870: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1871: {
1.76 kristaps 1872: if (NULL == r->last) {
1.221 schwarze 1873: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1874: ln, ppos, "\\}");
1.340 schwarze 1875: return 0;
1.76 kristaps 1876: }
1877:
1.82 kristaps 1878: switch (r->last->tok) {
1.207 schwarze 1879: case ROFF_el:
1880: case ROFF_ie:
1881: case ROFF_if:
1.340 schwarze 1882: case ROFF_while:
1.82 kristaps 1883: break;
1884: default:
1.221 schwarze 1885: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1886: ln, ppos, "\\}");
1.340 schwarze 1887: return 0;
1.75 kristaps 1888: }
1889:
1.76 kristaps 1890: if (r->last->endspan > -1) {
1.221 schwarze 1891: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1892: ln, ppos, "\\}");
1.340 schwarze 1893: return 0;
1.76 kristaps 1894: }
1895:
1.340 schwarze 1896: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 1897: }
1898:
1.340 schwarze 1899: static int
1.80 kristaps 1900: roff_block(ROFF_ARGS)
1.76 kristaps 1901: {
1.315 schwarze 1902: const char *name, *value;
1903: char *call, *cp, *iname, *rname;
1904: size_t csz, namesz, rsz;
1905: int deftype;
1.106 kristaps 1906:
1.220 schwarze 1907: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1908:
1.238 schwarze 1909: if (tok == ROFF_de1)
1.220 schwarze 1910: tok = ROFF_de;
1.251 schwarze 1911: else if (tok == ROFF_dei1)
1912: tok = ROFF_dei;
1.238 schwarze 1913: else if (tok == ROFF_am1)
1.220 schwarze 1914: tok = ROFF_am;
1.251 schwarze 1915: else if (tok == ROFF_ami1)
1916: tok = ROFF_ami;
1.220 schwarze 1917:
1918: /* Parse the macro name argument. */
1919:
1.238 schwarze 1920: cp = buf->buf + pos;
1921: if (tok == ROFF_ig) {
1.220 schwarze 1922: iname = NULL;
1923: namesz = 0;
1924: } else {
1925: iname = cp;
1926: namesz = roff_getname(r, &cp, ln, ppos);
1927: iname[namesz] = '\0';
1928: }
1.107 kristaps 1929:
1.220 schwarze 1930: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1931:
1.238 schwarze 1932: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1933: deftype = ROFFDEF_USER;
1934: name = roff_getstrn(r, iname, namesz, &deftype);
1935: if (name == NULL) {
1.220 schwarze 1936: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1937: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1938: "%.*s", (int)namesz, iname);
1939: namesz = 0;
1940: } else
1941: namesz = strlen(name);
1942: } else
1943: name = iname;
1.107 kristaps 1944:
1.238 schwarze 1945: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1946: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1947: ln, ppos, roff_name[tok]);
1.277 schwarze 1948: return ROFF_IGN;
1.220 schwarze 1949: }
1.80 kristaps 1950:
1.106 kristaps 1951: roffnode_push(r, tok, name, ln, ppos);
1952:
1953: /*
1954: * At the beginning of a `de' macro, clear the existing string
1955: * with the same name, if there is one. New content will be
1.193 schwarze 1956: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1957: */
1.107 kristaps 1958:
1.311 schwarze 1959: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 1960: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 1961: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 1962: } else if (tok == ROFF_am || tok == ROFF_ami) {
1963: deftype = ROFFDEF_ANY;
1964: value = roff_getstrn(r, iname, namesz, &deftype);
1965: switch (deftype) { /* Before appending, ... */
1966: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1967: roff_setstrn(&r->strtab, name, namesz,
1968: value, strlen(value), 0);
1969: break;
1970: case ROFFDEF_REN: /* call original standard macro. */
1971: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1972: (int)strlen(value), value);
1973: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1974: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1975: free(call);
1976: break;
1977: case ROFFDEF_STD: /* rename and call standard macro. */
1978: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1979: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1980: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1981: (int)rsz, rname);
1982: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1983: free(call);
1984: free(rname);
1985: break;
1986: default:
1987: break;
1988: }
1.311 schwarze 1989: }
1.76 kristaps 1990:
1.238 schwarze 1991: if (*cp == '\0')
1.277 schwarze 1992: return ROFF_IGN;
1.78 kristaps 1993:
1.220 schwarze 1994: /* Get the custom end marker. */
1.107 kristaps 1995:
1.220 schwarze 1996: iname = cp;
1.213 schwarze 1997: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1998:
1999: /* Resolve the end marker if it is indirect. */
2000:
1.238 schwarze 2001: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2002: deftype = ROFFDEF_USER;
2003: name = roff_getstrn(r, iname, namesz, &deftype);
2004: if (name == NULL) {
1.220 schwarze 2005: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 2006: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 2007: "%.*s", (int)namesz, iname);
2008: namesz = 0;
2009: } else
2010: namesz = strlen(name);
2011: } else
2012: name = iname;
2013:
1.213 schwarze 2014: if (namesz)
2015: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2016:
1.238 schwarze 2017: if (*cp != '\0')
1.217 schwarze 2018: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 2019: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2020:
1.277 schwarze 2021: return ROFF_IGN;
1.78 kristaps 2022: }
2023:
1.340 schwarze 2024: static int
1.80 kristaps 2025: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2026: {
1.294 schwarze 2027: enum roff_tok t;
1.79 kristaps 2028: int i, j;
2029:
2030: /*
2031: * First check whether a custom macro exists at this level. If
2032: * it does, then check against it. This is some of groff's
2033: * stranger behaviours. If we encountered a custom end-scope
2034: * tag and that tag also happens to be a "real" macro, then we
2035: * need to try interpreting it again as a real macro. If it's
2036: * not, then return ignore. Else continue.
2037: */
2038:
2039: if (r->last->end) {
1.130 kristaps 2040: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2041: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2042: break;
2043:
1.238 schwarze 2044: if (r->last->end[j] == '\0' &&
2045: (buf->buf[i] == '\0' ||
2046: buf->buf[i] == ' ' ||
2047: buf->buf[i] == '\t')) {
1.79 kristaps 2048: roffnode_pop(r);
2049: roffnode_cleanscope(r);
2050:
1.238 schwarze 2051: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2052: i++;
2053:
2054: pos = i;
1.238 schwarze 2055: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2056: TOKEN_NONE)
1.277 schwarze 2057: return ROFF_RERUN;
2058: return ROFF_IGN;
1.79 kristaps 2059: }
2060: }
2061:
2062: /*
2063: * If we have no custom end-query or lookup failed, then try
2064: * pulling it out of the hashtable.
2065: */
2066:
1.238 schwarze 2067: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 2068:
1.238 schwarze 2069: if (t != ROFF_cblock) {
2070: if (tok != ROFF_ig)
2071: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 2072: return ROFF_IGN;
1.106 kristaps 2073: }
1.79 kristaps 2074:
1.277 schwarze 2075: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2076: }
2077:
1.340 schwarze 2078: static int
1.80 kristaps 2079: roff_block_text(ROFF_ARGS)
1.78 kristaps 2080: {
2081:
1.238 schwarze 2082: if (tok != ROFF_ig)
2083: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2084:
1.277 schwarze 2085: return ROFF_IGN;
1.78 kristaps 2086: }
2087:
1.340 schwarze 2088: static int
1.82 kristaps 2089: roff_cond_sub(ROFF_ARGS)
2090: {
1.340 schwarze 2091: char *ep;
2092: int endloop, irc, rr;
1.294 schwarze 2093: enum roff_tok t;
1.82 kristaps 2094:
1.340 schwarze 2095: irc = ROFF_IGN;
1.82 kristaps 2096: rr = r->last->rule;
1.340 schwarze 2097: endloop = tok != ROFF_while ? ROFF_IGN :
2098: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2099: if (roffnode_cleanscope(r))
2100: irc |= endloop;
1.144 kristaps 2101:
1.196 schwarze 2102: /*
2103: * If `\}' occurs on a macro line without a preceding macro,
2104: * drop the line completely.
2105: */
2106:
1.238 schwarze 2107: ep = buf->buf + pos;
2108: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 2109: rr = 0;
1.196 schwarze 2110:
1.343 schwarze 2111: /*
2112: * The closing delimiter `\}' rewinds the conditional scope
2113: * but is otherwise ignored when interpreting the line.
2114: */
1.144 kristaps 2115:
1.238 schwarze 2116: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2117: switch (ep[1]) {
2118: case '}':
2119: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2120: if (roff_ccond(r, ln, ep - buf->buf))
2121: irc |= endloop;
1.318 schwarze 2122: break;
2123: case '\0':
2124: ++ep;
2125: break;
2126: default:
2127: ep += 2;
2128: break;
1.197 schwarze 2129: }
1.177 schwarze 2130: }
1.318 schwarze 2131:
2132: /*
2133: * Fully handle known macros when they are structurally
2134: * required or when the conditional evaluated to true.
2135: */
2136:
2137: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.340 schwarze 2138: irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
2139: (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
2140: rr ? ROFF_CONT : ROFF_IGN;
2141: return irc;
1.82 kristaps 2142: }
2143:
1.340 schwarze 2144: static int
1.82 kristaps 2145: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2146: {
1.140 kristaps 2147: char *ep;
1.340 schwarze 2148: int endloop, irc, rr;
1.82 kristaps 2149:
1.340 schwarze 2150: irc = ROFF_IGN;
1.82 kristaps 2151: rr = r->last->rule;
1.340 schwarze 2152: endloop = tok != ROFF_while ? ROFF_IGN :
2153: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2154: if (roffnode_cleanscope(r))
2155: irc |= endloop;
1.82 kristaps 2156:
1.343 schwarze 2157: /*
2158: * If `\}' occurs on a text line with neither preceding
2159: * nor following characters, drop the line completely.
2160: */
2161:
1.238 schwarze 2162: ep = buf->buf + pos;
1.343 schwarze 2163: if (strcmp(ep, "\\}") == 0)
2164: rr = 0;
2165:
2166: /*
2167: * The closing delimiter `\}' rewinds the conditional scope
2168: * but is otherwise ignored when interpreting the line.
2169: */
2170:
1.238 schwarze 2171: while ((ep = strchr(ep, '\\')) != NULL) {
1.343 schwarze 2172: switch (ep[1]) {
2173: case '}':
2174: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2175: if (roff_ccond(r, ln, ep - buf->buf))
1.340 schwarze 2176: irc |= endloop;
1.343 schwarze 2177: break;
2178: case '\0':
2179: ++ep;
2180: break;
2181: default:
2182: ep += 2;
2183: break;
1.197 schwarze 2184: }
1.78 kristaps 2185: }
1.340 schwarze 2186: if (rr)
2187: irc |= ROFF_CONT;
2188: return irc;
1.74 kristaps 2189: }
2190:
1.266 schwarze 2191: /* --- handling of numeric and conditional expressions -------------------- */
2192:
1.204 schwarze 2193: /*
2194: * Parse a single signed integer number. Stop at the first non-digit.
2195: * If there is at least one digit, return success and advance the
2196: * parse point, else return failure and let the parse point unchanged.
2197: * Ignore overflows, treat them just like the C language.
2198: */
1.184 schwarze 2199: static int
1.261 schwarze 2200: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2201: {
1.261 schwarze 2202: int myres, scaled, n, p;
1.206 schwarze 2203:
2204: if (NULL == res)
2205: res = &myres;
1.184 schwarze 2206:
2207: p = *pos;
2208: n = v[p] == '-';
1.261 schwarze 2209: if (n || v[p] == '+')
1.184 schwarze 2210: p++;
2211:
1.261 schwarze 2212: if (flags & ROFFNUM_WHITE)
2213: while (isspace((unsigned char)v[p]))
2214: p++;
2215:
1.184 schwarze 2216: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2217: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2218: if (p == *pos + n)
2219: return 0;
2220:
2221: if (n)
2222: *res = -*res;
2223:
1.254 schwarze 2224: /* Each number may be followed by one optional scaling unit. */
2225:
2226: switch (v[p]) {
2227: case 'f':
1.261 schwarze 2228: scaled = *res * 65536;
1.254 schwarze 2229: break;
2230: case 'i':
1.261 schwarze 2231: scaled = *res * 240;
1.254 schwarze 2232: break;
2233: case 'c':
1.261 schwarze 2234: scaled = *res * 240 / 2.54;
1.254 schwarze 2235: break;
2236: case 'v':
2237: case 'P':
1.261 schwarze 2238: scaled = *res * 40;
1.254 schwarze 2239: break;
2240: case 'm':
2241: case 'n':
1.261 schwarze 2242: scaled = *res * 24;
1.254 schwarze 2243: break;
2244: case 'p':
1.261 schwarze 2245: scaled = *res * 10 / 3;
1.254 schwarze 2246: break;
2247: case 'u':
1.261 schwarze 2248: scaled = *res;
1.254 schwarze 2249: break;
2250: case 'M':
1.261 schwarze 2251: scaled = *res * 6 / 25;
1.254 schwarze 2252: break;
2253: default:
1.261 schwarze 2254: scaled = *res;
1.254 schwarze 2255: p--;
2256: break;
2257: }
1.261 schwarze 2258: if (flags & ROFFNUM_SCALE)
2259: *res = scaled;
1.254 schwarze 2260:
2261: *pos = p + 1;
1.277 schwarze 2262: return 1;
1.184 schwarze 2263: }
2264:
1.198 schwarze 2265: /*
2266: * Evaluate a string comparison condition.
2267: * The first character is the delimiter.
2268: * Succeed if the string up to its second occurrence
2269: * matches the string up to its third occurence.
2270: * Advance the cursor after the third occurrence
2271: * or lacking that, to the end of the line.
2272: */
2273: static int
2274: roff_evalstrcond(const char *v, int *pos)
2275: {
2276: const char *s1, *s2, *s3;
2277: int match;
2278:
2279: match = 0;
2280: s1 = v + *pos; /* initial delimiter */
2281: s2 = s1 + 1; /* for scanning the first string */
2282: s3 = strchr(s2, *s1); /* for scanning the second string */
2283:
2284: if (NULL == s3) /* found no middle delimiter */
2285: goto out;
2286:
2287: while ('\0' != *++s3) {
2288: if (*s2 != *s3) { /* mismatch */
2289: s3 = strchr(s3, *s1);
2290: break;
2291: }
2292: if (*s3 == *s1) { /* found the final delimiter */
2293: match = 1;
2294: break;
2295: }
2296: s2++;
2297: }
2298:
2299: out:
2300: if (NULL == s3)
2301: s3 = strchr(s2, '\0');
1.242 schwarze 2302: else if (*s3 != '\0')
1.198 schwarze 2303: s3++;
2304: *pos = s3 - v;
1.277 schwarze 2305: return match;
1.198 schwarze 2306: }
2307:
1.204 schwarze 2308: /*
2309: * Evaluate an optionally negated single character, numerical,
2310: * or string condition.
2311: */
1.198 schwarze 2312: static int
1.271 schwarze 2313: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2314: {
1.336 schwarze 2315: const char *start, *end;
2316: char *cp, *name;
2317: size_t sz;
2318: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2319:
1.198 schwarze 2320: if ('!' == v[*pos]) {
2321: wanttrue = 0;
2322: (*pos)++;
2323: } else
2324: wanttrue = 1;
2325:
1.88 kristaps 2326: switch (v[*pos]) {
1.240 schwarze 2327: case '\0':
1.277 schwarze 2328: return 0;
1.207 schwarze 2329: case 'n':
2330: case 'o':
1.88 kristaps 2331: (*pos)++;
1.277 schwarze 2332: return wanttrue;
1.207 schwarze 2333: case 'e':
2334: case 't':
1.239 schwarze 2335: case 'v':
1.88 kristaps 2336: (*pos)++;
1.277 schwarze 2337: return !wanttrue;
1.336 schwarze 2338: case 'c':
2339: do {
2340: (*pos)++;
2341: } while (v[*pos] == ' ');
2342:
2343: /*
2344: * Quirk for groff compatibility:
2345: * The horizontal tab is neither available nor unavailable.
2346: */
2347:
2348: if (v[*pos] == '\t') {
2349: (*pos)++;
2350: return 0;
2351: }
2352:
2353: /* Printable ASCII characters are available. */
2354:
2355: if (v[*pos] != '\\') {
2356: (*pos)++;
2357: return wanttrue;
2358: }
2359:
2360: end = v + ++*pos;
2361: switch (mandoc_escape(&end, &start, &len)) {
2362: case ESCAPE_SPECIAL:
2363: istrue = mchars_spec2cp(start, len) != -1;
2364: break;
2365: case ESCAPE_UNICODE:
2366: istrue = 1;
2367: break;
2368: case ESCAPE_NUMBERED:
2369: istrue = mchars_num2char(start, len) != -1;
2370: break;
2371: default:
2372: istrue = !wanttrue;
2373: break;
2374: }
2375: *pos = end - v;
2376: return istrue == wanttrue;
1.310 schwarze 2377: case 'd':
1.271 schwarze 2378: case 'r':
1.310 schwarze 2379: cp = v + *pos + 1;
2380: while (*cp == ' ')
2381: cp++;
2382: name = cp;
2383: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2384: if (sz == 0)
2385: istrue = 0;
2386: else if (v[*pos] == 'r')
2387: istrue = roff_hasregn(r, name, sz);
2388: else {
2389: deftype = ROFFDEF_ANY;
2390: roff_getstrn(r, name, sz, &deftype);
2391: istrue = !!deftype;
2392: }
1.271 schwarze 2393: *pos = cp - v;
1.310 schwarze 2394: return istrue == wanttrue;
1.88 kristaps 2395: default:
2396: break;
2397: }
2398:
1.241 schwarze 2399: savepos = *pos;
1.261 schwarze 2400: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2401: return (number > 0) == wanttrue;
1.241 schwarze 2402: else if (*pos == savepos)
1.277 schwarze 2403: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2404: else
1.277 schwarze 2405: return 0;
1.88 kristaps 2406: }
2407:
1.340 schwarze 2408: static int
1.103 kristaps 2409: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2410: {
1.123 schwarze 2411:
1.277 schwarze 2412: return ROFF_IGN;
1.89 kristaps 2413: }
2414:
1.340 schwarze 2415: static int
1.251 schwarze 2416: roff_insec(ROFF_ARGS)
2417: {
2418:
2419: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2420: ln, ppos, roff_name[tok]);
1.277 schwarze 2421: return ROFF_IGN;
1.251 schwarze 2422: }
2423:
1.340 schwarze 2424: static int
1.251 schwarze 2425: roff_unsupp(ROFF_ARGS)
2426: {
2427:
2428: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2429: ln, ppos, roff_name[tok]);
1.277 schwarze 2430: return ROFF_IGN;
1.251 schwarze 2431: }
2432:
1.340 schwarze 2433: static int
1.82 kristaps 2434: roff_cond(ROFF_ARGS)
1.74 kristaps 2435: {
1.340 schwarze 2436: int irc;
1.173 schwarze 2437:
2438: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2439:
1.207 schwarze 2440: /*
1.134 kristaps 2441: * An `.el' has no conditional body: it will consume the value
2442: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2443: * defaults to DENY.
1.134 kristaps 2444: *
2445: * If we're not an `el', however, then evaluate the conditional.
2446: */
1.133 kristaps 2447:
1.238 schwarze 2448: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2449: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2450: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2451:
1.134 kristaps 2452: /*
2453: * An if-else will put the NEGATION of the current evaluated
2454: * conditional into the stack of rules.
2455: */
2456:
1.238 schwarze 2457: if (tok == ROFF_ie) {
1.223 schwarze 2458: if (r->rstackpos + 1 == r->rstacksz) {
2459: r->rstacksz += 16;
2460: r->rstack = mandoc_reallocarray(r->rstack,
2461: r->rstacksz, sizeof(int));
1.134 kristaps 2462: }
1.198 schwarze 2463: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2464: }
1.88 kristaps 2465:
2466: /* If the parent has false as its rule, then so do we. */
2467:
1.198 schwarze 2468: if (r->last->parent && !r->last->parent->rule)
2469: r->last->rule = 0;
1.88 kristaps 2470:
2471: /*
1.173 schwarze 2472: * Determine scope.
2473: * If there is nothing on the line after the conditional,
2474: * not even whitespace, use next-line scope.
1.340 schwarze 2475: * Except that .while does not support next-line scope.
1.88 kristaps 2476: */
1.74 kristaps 2477:
1.340 schwarze 2478: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2479: r->last->endspan = 2;
2480: goto out;
2481: }
2482:
1.238 schwarze 2483: while (buf->buf[pos] == ' ')
1.173 schwarze 2484: pos++;
2485:
2486: /* An opening brace requests multiline scope. */
1.75 kristaps 2487:
1.238 schwarze 2488: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2489: r->last->endspan = -1;
2490: pos += 2;
1.272 schwarze 2491: while (buf->buf[pos] == ' ')
2492: pos++;
1.173 schwarze 2493: goto out;
1.207 schwarze 2494: }
1.74 kristaps 2495:
1.77 kristaps 2496: /*
1.173 schwarze 2497: * Anything else following the conditional causes
2498: * single-line scope. Warn if the scope contains
2499: * nothing but trailing whitespace.
1.77 kristaps 2500: */
2501:
1.238 schwarze 2502: if (buf->buf[pos] == '\0')
1.216 schwarze 2503: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2504: ln, ppos, roff_name[tok]);
1.77 kristaps 2505:
1.173 schwarze 2506: r->last->endspan = 1;
1.74 kristaps 2507:
1.173 schwarze 2508: out:
1.75 kristaps 2509: *offs = pos;
1.340 schwarze 2510: irc = ROFF_RERUN;
2511: if (tok == ROFF_while)
2512: irc |= ROFF_WHILE;
2513: return irc;
1.83 schwarze 2514: }
2515:
1.340 schwarze 2516: static int
1.92 schwarze 2517: roff_ds(ROFF_ARGS)
2518: {
1.212 schwarze 2519: char *string;
2520: const char *name;
2521: size_t namesz;
1.96 kristaps 2522:
1.251 schwarze 2523: /* Ignore groff compatibility mode for now. */
2524:
2525: if (tok == ROFF_ds1)
2526: tok = ROFF_ds;
2527: else if (tok == ROFF_as1)
2528: tok = ROFF_as;
2529:
1.96 kristaps 2530: /*
1.212 schwarze 2531: * The first word is the name of the string.
2532: * If it is empty or terminated by an escape sequence,
2533: * abort the `ds' request without defining anything.
1.96 kristaps 2534: */
1.92 schwarze 2535:
1.238 schwarze 2536: name = string = buf->buf + pos;
2537: if (*name == '\0')
1.277 schwarze 2538: return ROFF_IGN;
1.92 schwarze 2539:
1.212 schwarze 2540: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2541: if (name[namesz] == '\\')
1.277 schwarze 2542: return ROFF_IGN;
1.212 schwarze 2543:
2544: /* Read past the initial double-quote, if any. */
1.238 schwarze 2545: if (*string == '"')
1.92 schwarze 2546: string++;
2547:
1.96 kristaps 2548: /* The rest is the value. */
1.212 schwarze 2549: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2550: ROFF_as == tok);
1.311 schwarze 2551: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2552: return ROFF_IGN;
1.92 schwarze 2553: }
2554:
1.204 schwarze 2555: /*
2556: * Parse a single operator, one or two characters long.
2557: * If the operator is recognized, return success and advance the
2558: * parse point, else return failure and let the parse point unchanged.
2559: */
2560: static int
2561: roff_getop(const char *v, int *pos, char *res)
2562: {
2563:
2564: *res = v[*pos];
2565:
2566: switch (*res) {
1.207 schwarze 2567: case '+':
2568: case '-':
2569: case '*':
2570: case '/':
2571: case '%':
2572: case '&':
2573: case ':':
1.204 schwarze 2574: break;
2575: case '<':
2576: switch (v[*pos + 1]) {
1.207 schwarze 2577: case '=':
1.204 schwarze 2578: *res = 'l';
2579: (*pos)++;
2580: break;
1.207 schwarze 2581: case '>':
1.204 schwarze 2582: *res = '!';
2583: (*pos)++;
2584: break;
1.207 schwarze 2585: case '?':
1.204 schwarze 2586: *res = 'i';
2587: (*pos)++;
2588: break;
2589: default:
2590: break;
2591: }
2592: break;
2593: case '>':
2594: switch (v[*pos + 1]) {
1.207 schwarze 2595: case '=':
1.204 schwarze 2596: *res = 'g';
2597: (*pos)++;
2598: break;
1.207 schwarze 2599: case '?':
1.204 schwarze 2600: *res = 'a';
2601: (*pos)++;
2602: break;
2603: default:
2604: break;
2605: }
2606: break;
2607: case '=':
2608: if ('=' == v[*pos + 1])
2609: (*pos)++;
2610: break;
2611: default:
1.277 schwarze 2612: return 0;
1.204 schwarze 2613: }
2614: (*pos)++;
2615:
1.277 schwarze 2616: return *res;
1.204 schwarze 2617: }
2618:
2619: /*
2620: * Evaluate either a parenthesized numeric expression
2621: * or a single signed integer number.
2622: */
2623: static int
1.235 schwarze 2624: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2625: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2626: {
2627:
2628: if ('(' != v[*pos])
1.277 schwarze 2629: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2630:
2631: (*pos)++;
1.261 schwarze 2632: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2633: return 0;
1.204 schwarze 2634:
1.206 schwarze 2635: /*
2636: * Omission of the closing parenthesis
2637: * is an error in validation mode,
2638: * but ignored in evaluation mode.
2639: */
2640:
1.204 schwarze 2641: if (')' == v[*pos])
2642: (*pos)++;
1.206 schwarze 2643: else if (NULL == res)
1.277 schwarze 2644: return 0;
1.204 schwarze 2645:
1.277 schwarze 2646: return 1;
1.204 schwarze 2647: }
2648:
2649: /*
2650: * Evaluate a complete numeric expression.
2651: * Proceed left to right, there is no concept of precedence.
2652: */
2653: static int
1.235 schwarze 2654: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2655: int *pos, int *res, int flags)
1.204 schwarze 2656: {
2657: int mypos, operand2;
2658: char operator;
2659:
2660: if (NULL == pos) {
2661: mypos = 0;
2662: pos = &mypos;
2663: }
2664:
1.261 schwarze 2665: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2666: while (isspace((unsigned char)v[*pos]))
2667: (*pos)++;
2668:
1.261 schwarze 2669: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2670: return 0;
1.204 schwarze 2671:
2672: while (1) {
1.261 schwarze 2673: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2674: while (isspace((unsigned char)v[*pos]))
2675: (*pos)++;
2676:
2677: if ( ! roff_getop(v, pos, &operator))
2678: break;
2679:
1.261 schwarze 2680: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2681: while (isspace((unsigned char)v[*pos]))
2682: (*pos)++;
2683:
1.261 schwarze 2684: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2685: return 0;
1.204 schwarze 2686:
1.261 schwarze 2687: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2688: while (isspace((unsigned char)v[*pos]))
2689: (*pos)++;
1.206 schwarze 2690:
2691: if (NULL == res)
2692: continue;
1.204 schwarze 2693:
2694: switch (operator) {
1.207 schwarze 2695: case '+':
1.204 schwarze 2696: *res += operand2;
2697: break;
1.207 schwarze 2698: case '-':
1.204 schwarze 2699: *res -= operand2;
2700: break;
1.207 schwarze 2701: case '*':
1.204 schwarze 2702: *res *= operand2;
2703: break;
1.207 schwarze 2704: case '/':
1.244 schwarze 2705: if (operand2 == 0) {
1.235 schwarze 2706: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2707: r->parse, ln, *pos, v);
2708: *res = 0;
2709: break;
2710: }
1.204 schwarze 2711: *res /= operand2;
2712: break;
1.207 schwarze 2713: case '%':
1.244 schwarze 2714: if (operand2 == 0) {
2715: mandoc_msg(MANDOCERR_DIVZERO,
2716: r->parse, ln, *pos, v);
2717: *res = 0;
2718: break;
2719: }
1.204 schwarze 2720: *res %= operand2;
2721: break;
1.207 schwarze 2722: case '<':
1.204 schwarze 2723: *res = *res < operand2;
2724: break;
1.207 schwarze 2725: case '>':
1.204 schwarze 2726: *res = *res > operand2;
2727: break;
1.207 schwarze 2728: case 'l':
1.204 schwarze 2729: *res = *res <= operand2;
2730: break;
1.207 schwarze 2731: case 'g':
1.204 schwarze 2732: *res = *res >= operand2;
2733: break;
1.207 schwarze 2734: case '=':
1.204 schwarze 2735: *res = *res == operand2;
2736: break;
1.207 schwarze 2737: case '!':
1.204 schwarze 2738: *res = *res != operand2;
2739: break;
1.207 schwarze 2740: case '&':
1.204 schwarze 2741: *res = *res && operand2;
2742: break;
1.207 schwarze 2743: case ':':
1.204 schwarze 2744: *res = *res || operand2;
2745: break;
1.207 schwarze 2746: case 'i':
1.204 schwarze 2747: if (operand2 < *res)
2748: *res = operand2;
2749: break;
1.207 schwarze 2750: case 'a':
1.204 schwarze 2751: if (operand2 > *res)
2752: *res = operand2;
2753: break;
2754: default:
2755: abort();
2756: }
2757: }
1.277 schwarze 2758: return 1;
1.204 schwarze 2759: }
2760:
1.266 schwarze 2761: /* --- register management ------------------------------------------------ */
2762:
1.180 schwarze 2763: void
1.187 schwarze 2764: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2765: {
1.327 schwarze 2766: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2767: }
2768:
2769: static void
2770: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2771: int val, char sign, int step)
1.326 schwarze 2772: {
1.180 schwarze 2773: struct roffreg *reg;
2774:
2775: /* Search for an existing register with the same name. */
2776: reg = r->regtab;
2777:
1.326 schwarze 2778: while (reg != NULL && (reg->key.sz != len ||
2779: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 2780: reg = reg->next;
1.147 kristaps 2781:
1.180 schwarze 2782: if (NULL == reg) {
2783: /* Create a new register. */
2784: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 2785: reg->key.p = mandoc_strndup(name, len);
2786: reg->key.sz = len;
1.187 schwarze 2787: reg->val = 0;
1.327 schwarze 2788: reg->step = 0;
1.180 schwarze 2789: reg->next = r->regtab;
2790: r->regtab = reg;
2791: }
2792:
1.187 schwarze 2793: if ('+' == sign)
2794: reg->val += val;
2795: else if ('-' == sign)
2796: reg->val -= val;
2797: else
2798: reg->val = val;
1.327 schwarze 2799: if (step != INT_MIN)
2800: reg->step = step;
1.147 kristaps 2801: }
2802:
1.192 schwarze 2803: /*
2804: * Handle some predefined read-only number registers.
2805: * For now, return -1 if the requested register is not predefined;
2806: * in case a predefined read-only register having the value -1
2807: * were to turn up, another special value would have to be chosen.
2808: */
2809: static int
1.273 schwarze 2810: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2811: {
2812:
2813: switch (*name) {
1.273 schwarze 2814: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 2815: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 2816: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2817: return 0;
1.207 schwarze 2818: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2819: return 1;
1.207 schwarze 2820: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2821: return 24;
1.207 schwarze 2822: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2823: return 0;
1.207 schwarze 2824: case 'T': /* Some output device is always defined. */
1.277 schwarze 2825: return 1;
1.207 schwarze 2826: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2827: return 40;
1.192 schwarze 2828: default:
1.277 schwarze 2829: return -1;
1.192 schwarze 2830: }
2831: }
2832:
1.181 schwarze 2833: int
1.326 schwarze 2834: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 2835: {
1.327 schwarze 2836: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 2837: }
2838:
2839: static int
1.327 schwarze 2840: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 2841: {
2842: struct roffreg *reg;
1.192 schwarze 2843: int val;
2844:
2845: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2846: val = roff_getregro(r, name + 1);
1.192 schwarze 2847: if (-1 != val)
1.277 schwarze 2848: return val;
1.192 schwarze 2849: }
1.181 schwarze 2850:
1.327 schwarze 2851: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 2852: if (len == reg->key.sz &&
1.327 schwarze 2853: 0 == strncmp(name, reg->key.p, len)) {
2854: switch (sign) {
2855: case '+':
2856: reg->val += reg->step;
2857: break;
2858: case '-':
2859: reg->val -= reg->step;
2860: break;
2861: default:
2862: break;
2863: }
1.277 schwarze 2864: return reg->val;
1.327 schwarze 2865: }
2866: }
1.271 schwarze 2867:
1.327 schwarze 2868: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 2869: return 0;
1.271 schwarze 2870: }
2871:
2872: static int
2873: roff_hasregn(const struct roff *r, const char *name, size_t len)
2874: {
2875: struct roffreg *reg;
2876: int val;
2877:
2878: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2879: val = roff_getregro(r, name + 1);
1.271 schwarze 2880: if (-1 != val)
1.277 schwarze 2881: return 1;
1.271 schwarze 2882: }
2883:
2884: for (reg = r->regtab; reg; reg = reg->next)
2885: if (len == reg->key.sz &&
2886: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2887: return 1;
1.147 kristaps 2888:
1.277 schwarze 2889: return 0;
1.147 kristaps 2890: }
2891:
1.180 schwarze 2892: static void
2893: roff_freereg(struct roffreg *reg)
1.147 kristaps 2894: {
1.180 schwarze 2895: struct roffreg *old_reg;
1.147 kristaps 2896:
1.180 schwarze 2897: while (NULL != reg) {
2898: free(reg->key.p);
2899: old_reg = reg;
2900: reg = reg->next;
2901: free(old_reg);
2902: }
1.147 kristaps 2903: }
1.92 schwarze 2904:
1.340 schwarze 2905: static int
1.89 kristaps 2906: roff_nr(ROFF_ARGS)
1.83 schwarze 2907: {
1.327 schwarze 2908: char *key, *val, *step;
1.212 schwarze 2909: size_t keysz;
1.327 schwarze 2910: int iv, is, len;
1.187 schwarze 2911: char sign;
1.89 kristaps 2912:
1.238 schwarze 2913: key = val = buf->buf + pos;
2914: if (*key == '\0')
1.277 schwarze 2915: return ROFF_IGN;
1.212 schwarze 2916:
2917: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2918: if (key[keysz] == '\\')
1.277 schwarze 2919: return ROFF_IGN;
1.89 kristaps 2920:
1.187 schwarze 2921: sign = *val;
1.238 schwarze 2922: if (sign == '+' || sign == '-')
1.187 schwarze 2923: val++;
2924:
1.327 schwarze 2925: len = 0;
2926: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2927: return ROFF_IGN;
2928:
2929: step = val + len;
2930: while (isspace((unsigned char)*step))
2931: step++;
2932: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2933: is = INT_MIN;
1.109 kristaps 2934:
1.327 schwarze 2935: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 2936: return ROFF_IGN;
1.203 schwarze 2937: }
2938:
1.340 schwarze 2939: static int
1.203 schwarze 2940: roff_rr(ROFF_ARGS)
2941: {
2942: struct roffreg *reg, **prev;
1.212 schwarze 2943: char *name, *cp;
2944: size_t namesz;
1.203 schwarze 2945:
1.238 schwarze 2946: name = cp = buf->buf + pos;
2947: if (*name == '\0')
1.277 schwarze 2948: return ROFF_IGN;
1.212 schwarze 2949: namesz = roff_getname(r, &cp, ln, pos);
2950: name[namesz] = '\0';
1.203 schwarze 2951:
2952: prev = &r->regtab;
2953: while (1) {
2954: reg = *prev;
1.238 schwarze 2955: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2956: break;
2957: prev = ®->next;
2958: }
1.238 schwarze 2959: if (reg != NULL) {
1.203 schwarze 2960: *prev = reg->next;
2961: free(reg->key.p);
2962: free(reg);
2963: }
1.277 schwarze 2964: return ROFF_IGN;
1.122 schwarze 2965: }
2966:
1.266 schwarze 2967: /* --- handler functions for roff requests -------------------------------- */
2968:
1.340 schwarze 2969: static int
1.122 schwarze 2970: roff_rm(ROFF_ARGS)
2971: {
2972: const char *name;
2973: char *cp;
1.212 schwarze 2974: size_t namesz;
1.122 schwarze 2975:
1.238 schwarze 2976: cp = buf->buf + pos;
2977: while (*cp != '\0') {
1.212 schwarze 2978: name = cp;
1.238 schwarze 2979: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2980: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 2981: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 2982: if (name[namesz] == '\\')
1.212 schwarze 2983: break;
1.122 schwarze 2984: }
1.277 schwarze 2985: return ROFF_IGN;
1.178 schwarze 2986: }
2987:
1.340 schwarze 2988: static int
1.178 schwarze 2989: roff_it(ROFF_ARGS)
2990: {
2991: int iv;
2992:
2993: /* Parse the number of lines. */
1.261 schwarze 2994:
2995: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2996: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2997: ln, ppos, buf->buf + 1);
1.277 schwarze 2998: return ROFF_IGN;
1.178 schwarze 2999: }
3000:
1.262 schwarze 3001: while (isspace((unsigned char)buf->buf[pos]))
3002: pos++;
3003:
3004: /*
3005: * Arm the input line trap.
3006: * Special-casing "an-trap" is an ugly workaround to cope
3007: * with DocBook stupidly fiddling with man(7) internals.
3008: */
1.261 schwarze 3009:
1.178 schwarze 3010: roffit_lines = iv;
1.262 schwarze 3011: roffit_macro = mandoc_strdup(iv != 1 ||
3012: strcmp(buf->buf + pos, "an-trap") ?
3013: buf->buf + pos : "br");
1.277 schwarze 3014: return ROFF_IGN;
1.175 schwarze 3015: }
3016:
1.340 schwarze 3017: static int
1.175 schwarze 3018: roff_Dd(ROFF_ARGS)
3019: {
1.315 schwarze 3020: int mask;
3021: enum roff_tok t, te;
1.227 schwarze 3022:
1.315 schwarze 3023: switch (tok) {
3024: case ROFF_Dd:
3025: tok = MDOC_Dd;
3026: te = MDOC_MAX;
3027: if (r->format == 0)
3028: r->format = MPARSE_MDOC;
3029: mask = MPARSE_MDOC | MPARSE_QUICK;
3030: break;
3031: case ROFF_TH:
3032: tok = MAN_TH;
3033: te = MAN_MAX;
3034: if (r->format == 0)
3035: r->format = MPARSE_MAN;
3036: mask = MPARSE_QUICK;
3037: break;
3038: default:
3039: abort();
3040: }
3041: if ((r->options & mask) == 0)
3042: for (t = tok; t < te; t++)
3043: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3044: return ROFF_CONT;
1.109 kristaps 3045: }
3046:
1.340 schwarze 3047: static int
1.109 kristaps 3048: roff_TE(ROFF_ARGS)
3049: {
1.321 schwarze 3050: if (r->tbl == NULL) {
1.221 schwarze 3051: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3052: ln, ppos, "TE");
1.321 schwarze 3053: return ROFF_IGN;
3054: }
1.346 schwarze 3055: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3056: r->tbl = NULL;
1.258 schwarze 3057: free(buf->buf);
3058: buf->buf = mandoc_strdup(".sp");
3059: buf->sz = 4;
1.329 schwarze 3060: *offs = 0;
1.277 schwarze 3061: return ROFF_REPARSE;
1.258 schwarze 3062: }
1.321 schwarze 3063: r->tbl = NULL;
1.277 schwarze 3064: return ROFF_IGN;
1.112 kristaps 3065: }
3066:
1.340 schwarze 3067: static int
1.112 kristaps 3068: roff_T_(ROFF_ARGS)
3069: {
3070:
3071: if (NULL == r->tbl)
1.221 schwarze 3072: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3073: ln, ppos, "T&");
1.112 kristaps 3074: else
1.296 schwarze 3075: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3076:
1.277 schwarze 3077: return ROFF_IGN;
1.109 kristaps 3078: }
3079:
1.230 schwarze 3080: /*
3081: * Handle in-line equation delimiters.
3082: */
1.340 schwarze 3083: static int
1.238 schwarze 3084: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3085: {
1.233 schwarze 3086: char *cp1, *cp2;
3087: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3088:
1.230 schwarze 3089: /*
3090: * Outside equations, look for an opening delimiter.
3091: * If we are inside an equation, we already know it is
3092: * in-line, or this function wouldn't have been called;
3093: * so look for a closing delimiter.
3094: */
3095:
1.238 schwarze 3096: cp1 = buf->buf + pos;
1.230 schwarze 3097: cp2 = strchr(cp1, r->eqn == NULL ?
3098: r->last_eqn->odelim : r->last_eqn->cdelim);
3099: if (cp2 == NULL)
1.277 schwarze 3100: return ROFF_CONT;
1.230 schwarze 3101:
1.233 schwarze 3102: *cp2++ = '\0';
3103: bef_pr = bef_nl = aft_nl = aft_pr = "";
3104:
3105: /* Handle preceding text, protecting whitespace. */
3106:
1.238 schwarze 3107: if (*buf->buf != '\0') {
1.233 schwarze 3108: if (r->eqn == NULL)
3109: bef_pr = "\\&";
3110: bef_nl = "\n";
3111: }
3112:
3113: /*
3114: * Prepare replacing the delimiter with an equation macro
3115: * and drop leading white space from the equation.
3116: */
1.230 schwarze 3117:
1.233 schwarze 3118: if (r->eqn == NULL) {
3119: while (*cp2 == ' ')
3120: cp2++;
3121: mac = ".EQ";
3122: } else
3123: mac = ".EN";
3124:
3125: /* Handle following text, protecting whitespace. */
3126:
3127: if (*cp2 != '\0') {
3128: aft_nl = "\n";
3129: if (r->eqn != NULL)
3130: aft_pr = "\\&";
3131: }
3132:
3133: /* Do the actual replacement. */
3134:
1.238 schwarze 3135: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3136: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3137: free(buf->buf);
3138: buf->buf = cp1;
1.230 schwarze 3139:
3140: /* Toggle the in-line state of the eqn subsystem. */
3141:
3142: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3143: return ROFF_REPARSE;
1.151 kristaps 3144: }
3145:
1.340 schwarze 3146: static int
1.235 schwarze 3147: roff_EQ(ROFF_ARGS)
1.125 kristaps 3148: {
1.319 schwarze 3149: struct roff_node *n;
3150:
1.322 schwarze 3151: if (r->man->macroset == MACROSET_MAN)
3152: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3153: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3154: if (ln > r->man->last->line)
3155: n->flags |= NODE_LINE;
1.348 ! schwarze 3156: n->eqn = eqn_box_new();
1.319 schwarze 3157: roff_node_append(r->man, n);
3158: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3159:
1.238 schwarze 3160: assert(r->eqn == NULL);
1.319 schwarze 3161: if (r->last_eqn == NULL)
3162: r->last_eqn = eqn_alloc(r->parse);
3163: else
3164: eqn_reset(r->last_eqn);
3165: r->eqn = r->last_eqn;
3166: r->eqn->node = n;
1.151 kristaps 3167:
1.238 schwarze 3168: if (buf->buf[pos] != '\0')
1.235 schwarze 3169: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 3170: ".EQ %s", buf->buf + pos);
1.151 kristaps 3171:
1.277 schwarze 3172: return ROFF_IGN;
1.125 kristaps 3173: }
3174:
1.340 schwarze 3175: static int
1.125 kristaps 3176: roff_EN(ROFF_ARGS)
3177: {
1.319 schwarze 3178: if (r->eqn != NULL) {
3179: eqn_parse(r->eqn);
3180: r->eqn = NULL;
3181: } else
3182: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
3183: if (buf->buf[pos] != '\0')
3184: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3185: "EN %s", buf->buf + pos);
1.277 schwarze 3186: return ROFF_IGN;
1.125 kristaps 3187: }
3188:
1.340 schwarze 3189: static int
1.109 kristaps 3190: roff_TS(ROFF_ARGS)
3191: {
1.321 schwarze 3192: if (r->tbl != NULL) {
1.221 schwarze 3193: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
3194: ln, ppos, "TS breaks TS");
1.346 schwarze 3195: tbl_end(r->tbl, 0);
1.115 kristaps 3196: }
1.346 schwarze 3197: r->tbl = tbl_alloc(ppos, ln, r->parse, r->last_tbl);
3198: if (r->last_tbl == NULL)
1.321 schwarze 3199: r->first_tbl = r->tbl;
3200: r->last_tbl = r->tbl;
1.297 schwarze 3201: return ROFF_IGN;
3202: }
3203:
1.340 schwarze 3204: static int
1.297 schwarze 3205: roff_onearg(ROFF_ARGS)
3206: {
3207: struct roff_node *n;
3208: char *cp;
1.305 schwarze 3209: int npos;
1.297 schwarze 3210:
1.302 schwarze 3211: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3212: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3213: tok == ROFF_ti))
1.302 schwarze 3214: man_breakscope(r->man, tok);
3215:
1.309 schwarze 3216: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3217: r->man->last = roffce_node;
3218: r->man->next = ROFF_NEXT_SIBLING;
3219: }
3220:
1.297 schwarze 3221: roff_elem_alloc(r->man, ln, ppos, tok);
3222: n = r->man->last;
3223:
3224: cp = buf->buf + pos;
3225: if (*cp != '\0') {
3226: while (*cp != '\0' && *cp != ' ')
3227: cp++;
3228: while (*cp == ' ')
3229: *cp++ = '\0';
3230: if (*cp != '\0')
3231: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
3232: r->parse, ln, cp - buf->buf,
3233: "%s ... %s", roff_name[tok], cp);
3234: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3235: }
3236:
1.309 schwarze 3237: if (tok == ROFF_ce || tok == ROFF_rj) {
3238: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3239: roff_word_alloc(r->man, ln, pos, "1");
3240: r->man->last->flags |= NODE_NOSRC;
3241: }
3242: npos = 0;
3243: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3244: &roffce_lines, 0) == 0) {
3245: mandoc_vmsg(MANDOCERR_CE_NONUM,
3246: r->parse, ln, pos, "ce %s", buf->buf + pos);
3247: roffce_lines = 1;
3248: }
3249: if (roffce_lines < 1) {
3250: r->man->last = r->man->last->parent;
3251: roffce_node = NULL;
3252: roffce_lines = 0;
3253: } else
3254: roffce_node = r->man->last->parent;
3255: } else {
3256: n->flags |= NODE_VALID | NODE_ENDED;
3257: r->man->last = n;
3258: }
3259: n->flags |= NODE_LINE;
1.300 schwarze 3260: r->man->next = ROFF_NEXT_SIBLING;
3261: return ROFF_IGN;
3262: }
3263:
1.340 schwarze 3264: static int
1.300 schwarze 3265: roff_manyarg(ROFF_ARGS)
3266: {
3267: struct roff_node *n;
3268: char *sp, *ep;
3269:
3270: roff_elem_alloc(r->man, ln, ppos, tok);
3271: n = r->man->last;
3272:
3273: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3274: while (*ep != '\0' && *ep != ' ')
3275: ep++;
3276: while (*ep == ' ')
3277: *ep++ = '\0';
3278: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3279: }
3280:
3281: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3282: r->man->last = n;
3283: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3284: return ROFF_IGN;
1.251 schwarze 3285: }
3286:
1.340 schwarze 3287: static int
1.311 schwarze 3288: roff_als(ROFF_ARGS)
3289: {
3290: char *oldn, *newn, *end, *value;
3291: size_t oldsz, newsz, valsz;
3292:
3293: newn = oldn = buf->buf + pos;
3294: if (*newn == '\0')
3295: return ROFF_IGN;
3296:
3297: newsz = roff_getname(r, &oldn, ln, pos);
3298: if (newn[newsz] == '\\' || *oldn == '\0')
3299: return ROFF_IGN;
3300:
3301: end = oldn;
3302: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3303: if (oldsz == 0)
3304: return ROFF_IGN;
3305:
1.338 schwarze 3306: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3307: (int)oldsz, oldn);
1.311 schwarze 3308: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3309: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3310: free(value);
3311: return ROFF_IGN;
3312: }
3313:
1.340 schwarze 3314: static int
1.296 schwarze 3315: roff_br(ROFF_ARGS)
1.251 schwarze 3316: {
1.302 schwarze 3317: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3318: man_breakscope(r->man, ROFF_br);
1.296 schwarze 3319: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3320: if (buf->buf[pos] != '\0')
3321: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3322: "%s %s", roff_name[tok], buf->buf + pos);
3323: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3324: r->man->next = ROFF_NEXT_SIBLING;
3325: return ROFF_IGN;
1.92 schwarze 3326: }
3327:
1.340 schwarze 3328: static int
1.174 kristaps 3329: roff_cc(ROFF_ARGS)
3330: {
3331: const char *p;
3332:
1.238 schwarze 3333: p = buf->buf + pos;
1.174 kristaps 3334:
1.238 schwarze 3335: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3336: r->control = '\0';
1.174 kristaps 3337:
1.238 schwarze 3338: if (*p != '\0')
1.260 schwarze 3339: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3340: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3341:
1.341 schwarze 3342: return ROFF_IGN;
3343: }
3344:
3345: static int
3346: roff_char(ROFF_ARGS)
3347: {
3348: const char *p, *kp, *vp;
3349: size_t ksz, vsz;
3350: int font;
3351:
3352: /* Parse the character to be replaced. */
3353:
3354: kp = buf->buf + pos;
3355: p = kp + 1;
3356: if (*kp == '\0' || (*kp == '\\' &&
3357: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3358: (*p != ' ' && *p != '\0')) {
3359: mandoc_vmsg(MANDOCERR_CHAR_ARG, r->parse,
3360: ln, pos, "char %s", kp);
3361: return ROFF_IGN;
3362: }
3363: ksz = p - kp;
3364: while (*p == ' ')
3365: p++;
3366:
3367: /*
3368: * If the replacement string contains a font escape sequence,
3369: * we have to restore the font at the end.
3370: */
3371:
3372: vp = p;
3373: vsz = strlen(p);
3374: font = 0;
3375: while (*p != '\0') {
3376: if (*p++ != '\\')
3377: continue;
3378: switch (mandoc_escape(&p, NULL, NULL)) {
3379: case ESCAPE_FONT:
3380: case ESCAPE_FONTROMAN:
3381: case ESCAPE_FONTITALIC:
3382: case ESCAPE_FONTBOLD:
3383: case ESCAPE_FONTBI:
1.342 schwarze 3384: case ESCAPE_FONTCW:
1.341 schwarze 3385: case ESCAPE_FONTPREV:
3386: font++;
3387: break;
3388: default:
3389: break;
3390: }
3391: }
3392: if (font > 1)
3393: mandoc_msg(MANDOCERR_CHAR_FONT, r->parse,
3394: ln, vp - buf->buf, vp);
3395:
3396: /*
3397: * Approximate the effect of .char using the .tr tables.
3398: * XXX In groff, .char and .tr interact differently.
3399: */
3400:
3401: if (ksz == 1) {
3402: if (r->xtab == NULL)
3403: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3404: assert((unsigned int)*kp < 128);
3405: free(r->xtab[(int)*kp].p);
3406: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3407: "%s%s", vp, font ? "\fP" : "");
3408: } else {
3409: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3410: if (font)
3411: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3412: }
1.277 schwarze 3413: return ROFF_IGN;
1.174 kristaps 3414: }
3415:
1.340 schwarze 3416: static int
1.303 schwarze 3417: roff_ec(ROFF_ARGS)
3418: {
3419: const char *p;
3420:
3421: p = buf->buf + pos;
3422: if (*p == '\0')
3423: r->escape = '\\';
3424: else {
3425: r->escape = *p;
3426: if (*++p != '\0')
3427: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3428: ln, p - buf->buf, "ec ... %s", p);
3429: }
3430: return ROFF_IGN;
3431: }
3432:
1.340 schwarze 3433: static int
1.303 schwarze 3434: roff_eo(ROFF_ARGS)
3435: {
3436: r->escape = '\0';
3437: if (buf->buf[pos] != '\0')
3438: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3439: ln, pos, "eo %s", buf->buf + pos);
3440: return ROFF_IGN;
1.330 schwarze 3441: }
3442:
1.340 schwarze 3443: static int
1.330 schwarze 3444: roff_nop(ROFF_ARGS)
3445: {
3446: while (buf->buf[pos] == ' ')
3447: pos++;
3448: *offs = pos;
3449: return ROFF_RERUN;
1.303 schwarze 3450: }
3451:
1.340 schwarze 3452: static int
1.164 kristaps 3453: roff_tr(ROFF_ARGS)
3454: {
3455: const char *p, *first, *second;
3456: size_t fsz, ssz;
3457: enum mandoc_esc esc;
3458:
1.238 schwarze 3459: p = buf->buf + pos;
1.164 kristaps 3460:
1.238 schwarze 3461: if (*p == '\0') {
1.260 schwarze 3462: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 3463: return ROFF_IGN;
1.164 kristaps 3464: }
3465:
1.238 schwarze 3466: while (*p != '\0') {
1.164 kristaps 3467: fsz = ssz = 1;
3468:
3469: first = p++;
1.238 schwarze 3470: if (*first == '\\') {
1.164 kristaps 3471: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3472: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3473: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3474: ln, (int)(p - buf->buf), first);
1.277 schwarze 3475: return ROFF_IGN;
1.164 kristaps 3476: }
3477: fsz = (size_t)(p - first);
3478: }
3479:
3480: second = p++;
1.238 schwarze 3481: if (*second == '\\') {
1.164 kristaps 3482: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3483: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3484: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3485: ln, (int)(p - buf->buf), second);
1.277 schwarze 3486: return ROFF_IGN;
1.164 kristaps 3487: }
3488: ssz = (size_t)(p - second);
1.238 schwarze 3489: } else if (*second == '\0') {
1.260 schwarze 3490: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3491: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3492: second = " ";
1.165 kristaps 3493: p--;
1.164 kristaps 3494: }
3495:
1.167 kristaps 3496: if (fsz > 1) {
1.207 schwarze 3497: roff_setstrn(&r->xmbtab, first, fsz,
3498: second, ssz, 0);
1.167 kristaps 3499: continue;
3500: }
3501:
1.238 schwarze 3502: if (r->xtab == NULL)
1.207 schwarze 3503: r->xtab = mandoc_calloc(128,
3504: sizeof(struct roffstr));
1.167 kristaps 3505:
3506: free(r->xtab[(int)*first].p);
3507: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3508: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3509: }
3510:
1.277 schwarze 3511: return ROFF_IGN;
1.164 kristaps 3512: }
3513:
1.339 schwarze 3514: /*
3515: * Implementation of the .return request.
3516: * There is no need to call roff_userret() from here.
3517: * The read module will call that after rewinding the reader stack
3518: * to the place from where the current macro was called.
3519: */
1.340 schwarze 3520: static int
1.339 schwarze 3521: roff_return(ROFF_ARGS)
3522: {
3523: if (r->mstackpos >= 0)
1.340 schwarze 3524: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3525:
3526: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "return");
3527: return ROFF_IGN;
3528: }
3529:
1.340 schwarze 3530: static int
1.306 schwarze 3531: roff_rn(ROFF_ARGS)
3532: {
3533: const char *value;
3534: char *oldn, *newn, *end;
3535: size_t oldsz, newsz;
1.315 schwarze 3536: int deftype;
1.306 schwarze 3537:
3538: oldn = newn = buf->buf + pos;
3539: if (*oldn == '\0')
3540: return ROFF_IGN;
3541:
3542: oldsz = roff_getname(r, &newn, ln, pos);
3543: if (oldn[oldsz] == '\\' || *newn == '\0')
3544: return ROFF_IGN;
3545:
3546: end = newn;
3547: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3548: if (newsz == 0)
3549: return ROFF_IGN;
3550:
1.315 schwarze 3551: deftype = ROFFDEF_ANY;
3552: value = roff_getstrn(r, oldn, oldsz, &deftype);
3553: switch (deftype) {
3554: case ROFFDEF_USER:
1.306 schwarze 3555: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3556: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3557: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3558: break;
3559: case ROFFDEF_PRE:
3560: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3561: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3562: break;
3563: case ROFFDEF_REN:
1.306 schwarze 3564: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3565: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3566: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3567: break;
3568: case ROFFDEF_STD:
1.306 schwarze 3569: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3570: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3571: break;
3572: default:
3573: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3574: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3575: break;
3576: }
1.306 schwarze 3577: return ROFF_IGN;
3578: }
3579:
1.340 schwarze 3580: static int
1.339 schwarze 3581: roff_shift(ROFF_ARGS)
3582: {
3583: struct mctx *ctx;
3584: int levels, i;
3585:
3586: levels = 1;
3587: if (buf->buf[pos] != '\0' &&
3588: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
3589: mandoc_vmsg(MANDOCERR_CE_NONUM, r->parse,
3590: ln, pos, "shift %s", buf->buf + pos);
3591: levels = 1;
3592: }
3593: if (r->mstackpos < 0) {
3594: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "shift");
3595: return ROFF_IGN;
3596: }
3597: ctx = r->mstack + r->mstackpos;
3598: if (levels > ctx->argc) {
3599: mandoc_vmsg(MANDOCERR_SHIFT, r->parse,
3600: ln, pos, "%d, but max is %d", levels, ctx->argc);
3601: levels = ctx->argc;
3602: }
3603: if (levels == 0)
3604: return ROFF_IGN;
3605: for (i = 0; i < levels; i++)
3606: free(ctx->argv[i]);
3607: ctx->argc -= levels;
3608: for (i = 0; i < ctx->argc; i++)
3609: ctx->argv[i] = ctx->argv[i + levels];
3610: return ROFF_IGN;
3611: }
3612:
1.340 schwarze 3613: static int
1.105 kristaps 3614: roff_so(ROFF_ARGS)
3615: {
1.249 schwarze 3616: char *name, *cp;
1.105 kristaps 3617:
1.238 schwarze 3618: name = buf->buf + pos;
1.224 schwarze 3619: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3620:
3621: /*
3622: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3623: * opening anything that's not in our cwd or anything beneath
3624: * it. Thus, explicitly disallow traversing up the file-system
3625: * or using absolute paths.
3626: */
3627:
1.238 schwarze 3628: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3629: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3630: ".so %s", name);
1.249 schwarze 3631: buf->sz = mandoc_asprintf(&cp,
3632: ".sp\nSee the file %s.\n.sp", name) + 1;
3633: free(buf->buf);
3634: buf->buf = cp;
3635: *offs = 0;
1.277 schwarze 3636: return ROFF_REPARSE;
1.105 kristaps 3637: }
3638:
3639: *offs = pos;
1.277 schwarze 3640: return ROFF_SO;
1.105 kristaps 3641: }
1.92 schwarze 3642:
1.266 schwarze 3643: /* --- user defined strings and macros ------------------------------------ */
3644:
1.340 schwarze 3645: static int
1.106 kristaps 3646: roff_userdef(ROFF_ARGS)
1.99 kristaps 3647: {
1.339 schwarze 3648: struct mctx *ctx;
3649: char *arg, *ap, *dst, *src;
3650: size_t sz;
3651:
3652: /* Initialize a new macro stack context. */
3653:
3654: if (++r->mstackpos == r->mstacksz) {
3655: r->mstack = mandoc_recallocarray(r->mstack,
3656: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3657: r->mstacksz += 8;
3658: }
3659: ctx = r->mstack + r->mstackpos;
3660: ctx->argsz = 0;
3661: ctx->argc = 0;
3662: ctx->argv = NULL;
3663:
3664: /*
3665: * Collect pointers to macro argument strings,
3666: * NUL-terminating them and escaping quotes.
3667: */
3668:
3669: src = buf->buf + pos;
3670: while (*src != '\0') {
3671: if (ctx->argc == ctx->argsz) {
3672: ctx->argsz += 8;
3673: ctx->argv = mandoc_reallocarray(ctx->argv,
3674: ctx->argsz, sizeof(*ctx->argv));
3675: }
3676: arg = mandoc_getarg(r->parse, &src, ln, &pos);
3677: sz = 1; /* For the terminating NUL. */
3678: for (ap = arg; *ap != '\0'; ap++)
3679: sz += *ap == '"' ? 4 : 1;
3680: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3681: for (ap = arg; *ap != '\0'; ap++) {
3682: if (*ap == '"') {
3683: memcpy(dst, "\\(dq", 4);
3684: dst += 4;
3685: } else
3686: *dst++ = *ap;
1.106 kristaps 3687: }
1.339 schwarze 3688: *dst = '\0';
1.337 schwarze 3689: }
3690:
1.339 schwarze 3691: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3692:
1.238 schwarze 3693: free(buf->buf);
1.339 schwarze 3694: buf->buf = mandoc_strdup(r->current_string);
3695: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3696: *offs = 0;
1.106 kristaps 3697:
1.277 schwarze 3698: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3699: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3700: }
1.121 schwarze 3701:
1.306 schwarze 3702: /*
3703: * Calling a high-level macro that was renamed with .rn.
3704: * r->current_string has already been set up by roff_parse().
3705: */
1.340 schwarze 3706: static int
1.306 schwarze 3707: roff_renamed(ROFF_ARGS)
3708: {
3709: char *nbuf;
3710:
1.315 schwarze 3711: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3712: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3713: free(buf->buf);
3714: buf->buf = nbuf;
1.329 schwarze 3715: *offs = 0;
1.306 schwarze 3716: return ROFF_CONT;
3717: }
3718:
1.212 schwarze 3719: static size_t
1.121 schwarze 3720: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3721: {
3722: char *name, *cp;
1.212 schwarze 3723: size_t namesz;
1.121 schwarze 3724:
3725: name = *cpp;
3726: if ('\0' == *name)
1.277 schwarze 3727: return 0;
1.121 schwarze 3728:
1.212 schwarze 3729: /* Read until end of name and terminate it with NUL. */
3730: for (cp = name; 1; cp++) {
3731: if ('\0' == *cp || ' ' == *cp) {
3732: namesz = cp - name;
3733: break;
3734: }
1.121 schwarze 3735: if ('\\' != *cp)
3736: continue;
1.215 schwarze 3737: namesz = cp - name;
3738: if ('{' == cp[1] || '}' == cp[1])
3739: break;
1.121 schwarze 3740: cp++;
3741: if ('\\' == *cp)
3742: continue;
1.224 schwarze 3743: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3744: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3745: mandoc_escape((const char **)&cp, NULL, NULL);
3746: break;
1.121 schwarze 3747: }
3748:
3749: /* Read past spaces. */
3750: while (' ' == *cp)
3751: cp++;
3752:
3753: *cpp = cp;
1.277 schwarze 3754: return namesz;
1.121 schwarze 3755: }
3756:
1.106 kristaps 3757: /*
3758: * Store *string into the user-defined string called *name.
3759: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3760: * append == 0: replace mode
3761: * append == 1: single-line append mode
3762: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3763: */
1.94 kristaps 3764: static void
1.106 kristaps 3765: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3766: int append)
1.92 schwarze 3767: {
1.315 schwarze 3768: size_t namesz;
1.164 kristaps 3769:
1.315 schwarze 3770: namesz = strlen(name);
3771: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 3772: string ? strlen(string) : 0, append);
1.315 schwarze 3773: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 3774: }
3775:
3776: static void
1.166 kristaps 3777: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3778: const char *string, size_t stringsz, int append)
1.164 kristaps 3779: {
1.166 kristaps 3780: struct roffkv *n;
1.164 kristaps 3781: char *c;
3782: int i;
3783: size_t oldch, newch;
1.92 schwarze 3784:
1.106 kristaps 3785: /* Search for an existing string with the same name. */
1.164 kristaps 3786: n = *r;
3787:
1.211 schwarze 3788: while (n && (namesz != n->key.sz ||
3789: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3790: n = n->next;
1.94 kristaps 3791:
3792: if (NULL == n) {
1.106 kristaps 3793: /* Create a new string table entry. */
1.166 kristaps 3794: n = mandoc_malloc(sizeof(struct roffkv));
3795: n->key.p = mandoc_strndup(name, namesz);
3796: n->key.sz = namesz;
3797: n->val.p = NULL;
3798: n->val.sz = 0;
1.164 kristaps 3799: n->next = *r;
3800: *r = n;
1.193 schwarze 3801: } else if (0 == append) {
1.166 kristaps 3802: free(n->val.p);
3803: n->val.p = NULL;
3804: n->val.sz = 0;
1.106 kristaps 3805: }
3806:
3807: if (NULL == string)
3808: return;
3809:
3810: /*
3811: * One additional byte for the '\n' in multiline mode,
3812: * and one for the terminating '\0'.
3813: */
1.193 schwarze 3814: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3815:
1.166 kristaps 3816: if (NULL == n->val.p) {
3817: n->val.p = mandoc_malloc(newch);
3818: *n->val.p = '\0';
1.106 kristaps 3819: oldch = 0;
3820: } else {
1.166 kristaps 3821: oldch = n->val.sz;
3822: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3823: }
3824:
3825: /* Skip existing content in the destination buffer. */
1.166 kristaps 3826: c = n->val.p + (int)oldch;
1.106 kristaps 3827:
3828: /* Append new content to the destination buffer. */
1.164 kristaps 3829: i = 0;
3830: while (i < (int)stringsz) {
1.106 kristaps 3831: /*
3832: * Rudimentary roff copy mode:
3833: * Handle escaped backslashes.
3834: */
1.164 kristaps 3835: if ('\\' == string[i] && '\\' == string[i + 1])
3836: i++;
3837: *c++ = string[i++];
1.106 kristaps 3838: }
1.94 kristaps 3839:
1.106 kristaps 3840: /* Append terminating bytes. */
1.193 schwarze 3841: if (1 < append)
1.106 kristaps 3842: *c++ = '\n';
1.163 kristaps 3843:
1.106 kristaps 3844: *c = '\0';
1.166 kristaps 3845: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3846: }
3847:
1.94 kristaps 3848: static const char *
1.325 schwarze 3849: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 3850: int *deftype)
1.92 schwarze 3851: {
1.315 schwarze 3852: const struct roffkv *n;
1.325 schwarze 3853: int found, i;
1.315 schwarze 3854: enum roff_tok tok;
3855:
1.325 schwarze 3856: found = 0;
3857: for (n = r->strtab; n != NULL; n = n->next) {
3858: if (strncmp(name, n->key.p, len) != 0 ||
3859: n->key.p[len] != '\0' || n->val.p == NULL)
3860: continue;
3861: if (*deftype & ROFFDEF_USER) {
3862: *deftype = ROFFDEF_USER;
3863: return n->val.p;
3864: } else {
3865: found = 1;
3866: break;
3867: }
3868: }
3869: for (n = r->rentab; n != NULL; n = n->next) {
3870: if (strncmp(name, n->key.p, len) != 0 ||
3871: n->key.p[len] != '\0' || n->val.p == NULL)
3872: continue;
3873: if (*deftype & ROFFDEF_REN) {
3874: *deftype = ROFFDEF_REN;
3875: return n->val.p;
3876: } else {
3877: found = 1;
3878: break;
1.315 schwarze 3879: }
3880: }
1.325 schwarze 3881: for (i = 0; i < PREDEFS_MAX; i++) {
3882: if (strncmp(name, predefs[i].name, len) != 0 ||
3883: predefs[i].name[len] != '\0')
3884: continue;
3885: if (*deftype & ROFFDEF_PRE) {
3886: *deftype = ROFFDEF_PRE;
3887: return predefs[i].str;
3888: } else {
3889: found = 1;
3890: break;
1.315 schwarze 3891: }
3892: }
1.325 schwarze 3893: if (r->man->macroset != MACROSET_MAN) {
3894: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3895: if (strncmp(name, roff_name[tok], len) != 0 ||
3896: roff_name[tok][len] != '\0')
3897: continue;
3898: if (*deftype & ROFFDEF_STD) {
3899: *deftype = ROFFDEF_STD;
3900: return NULL;
3901: } else {
3902: found = 1;
3903: break;
1.315 schwarze 3904: }
3905: }
3906: }
1.325 schwarze 3907: if (r->man->macroset != MACROSET_MDOC) {
3908: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3909: if (strncmp(name, roff_name[tok], len) != 0 ||
3910: roff_name[tok][len] != '\0')
3911: continue;
3912: if (*deftype & ROFFDEF_STD) {
3913: *deftype = ROFFDEF_STD;
3914: return NULL;
3915: } else {
3916: found = 1;
3917: break;
1.315 schwarze 3918: }
3919: }
1.325 schwarze 3920: }
3921:
3922: if (found == 0 && *deftype != ROFFDEF_ANY) {
3923: if (*deftype & ROFFDEF_REN) {
3924: /*
3925: * This might still be a request,
3926: * so do not treat it as undefined yet.
3927: */
3928: *deftype = ROFFDEF_UNDEF;
3929: return NULL;
1.315 schwarze 3930: }
1.325 schwarze 3931:
3932: /* Using an undefined string defines it to be empty. */
3933:
3934: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3935: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 3936: }
1.325 schwarze 3937:
1.315 schwarze 3938: *deftype = 0;
1.277 schwarze 3939: return NULL;
1.92 schwarze 3940: }
3941:
1.94 kristaps 3942: static void
1.167 kristaps 3943: roff_freestr(struct roffkv *r)
1.92 schwarze 3944: {
1.166 kristaps 3945: struct roffkv *n, *nn;
1.92 schwarze 3946:
1.167 kristaps 3947: for (n = r; n; n = nn) {
1.166 kristaps 3948: free(n->key.p);
3949: free(n->val.p);
1.92 schwarze 3950: nn = n->next;
3951: free(n);
3952: }
1.114 kristaps 3953: }
1.266 schwarze 3954:
3955: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 3956:
3957: /*
3958: * Duplicate an input string, making the appropriate character
3959: * conversations (as stipulated by `tr') along the way.
3960: * Returns a heap-allocated string with all the replacements made.
3961: */
3962: char *
3963: roff_strdup(const struct roff *r, const char *p)
3964: {
1.166 kristaps 3965: const struct roffkv *cp;
1.164 kristaps 3966: char *res;
3967: const char *pp;
3968: size_t ssz, sz;
3969: enum mandoc_esc esc;
3970:
1.167 kristaps 3971: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3972: return mandoc_strdup(p);
1.164 kristaps 3973: else if ('\0' == *p)
1.277 schwarze 3974: return mandoc_strdup("");
1.164 kristaps 3975:
3976: /*
3977: * Step through each character looking for term matches
3978: * (remember that a `tr' can be invoked with an escape, which is
3979: * a glyph but the escape is multi-character).
3980: * We only do this if the character hash has been initialised
3981: * and the string is >0 length.
3982: */
3983:
3984: res = NULL;
3985: ssz = 0;
3986:
3987: while ('\0' != *p) {
1.289 schwarze 3988: assert((unsigned int)*p < 128);
3989: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3990: sz = r->xtab[(int)*p].sz;
3991: res = mandoc_realloc(res, ssz + sz + 1);
3992: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3993: ssz += sz;
3994: p++;
3995: continue;
3996: } else if ('\\' != *p) {
3997: res = mandoc_realloc(res, ssz + 2);
3998: res[ssz++] = *p++;
3999: continue;
4000: }
4001:
1.164 kristaps 4002: /* Search for term matches. */
1.167 kristaps 4003: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4004: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4005: break;
4006:
4007: if (NULL != cp) {
4008: /*
4009: * A match has been found.
4010: * Append the match to the array and move
4011: * forward by its keysize.
4012: */
1.207 schwarze 4013: res = mandoc_realloc(res,
4014: ssz + cp->val.sz + 1);
1.166 kristaps 4015: memcpy(res + ssz, cp->val.p, cp->val.sz);
4016: ssz += cp->val.sz;
4017: p += (int)cp->key.sz;
1.164 kristaps 4018: continue;
4019: }
4020:
1.167 kristaps 4021: /*
4022: * Handle escapes carefully: we need to copy
4023: * over just the escape itself, or else we might
4024: * do replacements within the escape itself.
4025: * Make sure to pass along the bogus string.
4026: */
4027: pp = p++;
4028: esc = mandoc_escape(&p, NULL, NULL);
4029: if (ESCAPE_ERROR == esc) {
4030: sz = strlen(pp);
1.164 kristaps 4031: res = mandoc_realloc(res, ssz + sz + 1);
4032: memcpy(res + ssz, pp, sz);
1.167 kristaps 4033: break;
1.164 kristaps 4034: }
1.207 schwarze 4035: /*
4036: * We bail out on bad escapes.
1.167 kristaps 4037: * No need to warn: we already did so when
4038: * roff_res() was called.
4039: */
4040: sz = (int)(p - pp);
4041: res = mandoc_realloc(res, ssz + sz + 1);
4042: memcpy(res + ssz, pp, sz);
4043: ssz += sz;
1.164 kristaps 4044: }
4045:
4046: res[(int)ssz] = '\0';
1.277 schwarze 4047: return res;
1.227 schwarze 4048: }
4049:
4050: int
4051: roff_getformat(const struct roff *r)
4052: {
4053:
1.277 schwarze 4054: return r->format;
1.174 kristaps 4055: }
4056:
4057: /*
1.207 schwarze 4058: * Find out whether a line is a macro line or not.
1.174 kristaps 4059: * If it is, adjust the current position and return one; if it isn't,
4060: * return zero and don't change the current position.
4061: * If the control character has been set with `.cc', then let that grain
4062: * precedence.
4063: * This is slighly contrary to groff, where using the non-breaking
4064: * control character when `cc' has been invoked will cause the
4065: * non-breaking macro contents to be printed verbatim.
4066: */
4067: int
4068: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4069: {
4070: int pos;
4071:
4072: pos = *ppos;
4073:
1.303 schwarze 4074: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4075: pos++;
1.303 schwarze 4076: else if (r->control != '\0')
1.277 schwarze 4077: return 0;
1.174 kristaps 4078: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4079: pos += 2;
4080: else if ('.' == cp[pos] || '\'' == cp[pos])
4081: pos++;
4082: else
1.277 schwarze 4083: return 0;
1.174 kristaps 4084:
4085: while (' ' == cp[pos] || '\t' == cp[pos])
4086: pos++;
4087:
4088: *ppos = pos;
1.277 schwarze 4089: return 1;
1.74 kristaps 4090: }
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