Annotation of mandoc/roff.c, Revision 1.351
1.351 ! schwarze 1: /* $Id: roff.c,v 1.350 2018/12/14 05:18:03 schwarze Exp $ */
1.1 kristaps 2: /*
1.267 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.325 schwarze 4: * Copyright (c) 2010-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.66 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.106 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.66 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.106 kristaps 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.66 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 17: */
1.66 kristaps 18: #include "config.h"
1.225 schwarze 19:
20: #include <sys/types.h>
1.30 kristaps 21:
1.67 kristaps 22: #include <assert.h>
1.85 kristaps 23: #include <ctype.h>
1.245 schwarze 24: #include <limits.h>
1.295 schwarze 25: #include <stddef.h>
26: #include <stdint.h>
1.178 schwarze 27: #include <stdio.h>
1.1 kristaps 28: #include <stdlib.h>
1.67 kristaps 29: #include <string.h>
1.1 kristaps 30:
1.201 schwarze 31: #include "mandoc_aux.h"
1.295 schwarze 32: #include "mandoc_ohash.h"
1.345 schwarze 33: #include "mandoc.h"
1.265 schwarze 34: #include "roff.h"
1.349 schwarze 35: #include "mandoc_parse.h"
1.226 schwarze 36: #include "libmandoc.h"
1.266 schwarze 37: #include "roff_int.h"
1.346 schwarze 38: #include "tbl_parse.h"
1.347 schwarze 39: #include "eqn_parse.h"
1.82 kristaps 40:
1.170 schwarze 41: /* Maximum number of string expansions per line, to break infinite loops. */
42: #define EXPAND_LIMIT 1000
43:
1.315 schwarze 44: /* Types of definitions of macros and strings. */
45: #define ROFFDEF_USER (1 << 1) /* User-defined. */
46: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
47: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
48: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
49: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
50: ROFFDEF_REN | ROFFDEF_STD)
1.325 schwarze 51: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 52:
1.266 schwarze 53: /* --- data types --------------------------------------------------------- */
54:
1.147 kristaps 55: /*
1.167 kristaps 56: * An incredibly-simple string buffer.
57: */
1.94 kristaps 58: struct roffstr {
1.167 kristaps 59: char *p; /* nil-terminated buffer */
60: size_t sz; /* saved strlen(p) */
1.166 kristaps 61: };
62:
63: /*
1.167 kristaps 64: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 65: */
66: struct roffkv {
67: struct roffstr key;
68: struct roffstr val;
69: struct roffkv *next; /* next in list */
1.94 kristaps 70: };
71:
1.180 schwarze 72: /*
73: * A single number register as part of a singly-linked list.
74: */
75: struct roffreg {
76: struct roffstr key;
1.181 schwarze 77: int val;
1.327 schwarze 78: int step;
1.180 schwarze 79: struct roffreg *next;
80: };
81:
1.295 schwarze 82: /*
83: * Association of request and macro names with token IDs.
84: */
85: struct roffreq {
86: enum roff_tok tok;
87: char name[];
88: };
89:
1.339 schwarze 90: /*
91: * A macro processing context.
92: * More than one is needed when macro calls are nested.
93: */
94: struct mctx {
95: char **argv;
96: int argc;
97: int argsz;
98: };
99:
1.67 kristaps 100: struct roff {
1.296 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 *
1.351 ! schwarze 782: roff_alloc(int options)
1.67 kristaps 783: {
784: struct roff *r;
785:
1.98 schwarze 786: r = mandoc_calloc(1, sizeof(struct roff));
1.328 schwarze 787: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.199 schwarze 788: r->options = options;
1.227 schwarze 789: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 790: r->mstackpos = -1;
1.82 kristaps 791: r->rstackpos = -1;
1.303 schwarze 792: r->escape = '\\';
1.277 schwarze 793: return r;
1.265 schwarze 794: }
795:
1.266 schwarze 796: /* --- syntax tree state data management ---------------------------------- */
797:
1.265 schwarze 798: static void
799: roff_man_free1(struct roff_man *man)
800: {
801:
1.266 schwarze 802: if (man->first != NULL)
803: roff_node_delete(man, man->first);
1.265 schwarze 804: free(man->meta.msec);
805: free(man->meta.vol);
806: free(man->meta.os);
807: free(man->meta.arch);
808: free(man->meta.title);
809: free(man->meta.name);
810: free(man->meta.date);
811: }
812:
813: static void
814: roff_man_alloc1(struct roff_man *man)
815: {
816:
817: memset(&man->meta, 0, sizeof(man->meta));
818: man->first = mandoc_calloc(1, sizeof(*man->first));
819: man->first->type = ROFFT_ROOT;
820: man->last = man->first;
821: man->last_es = NULL;
822: man->flags = 0;
823: man->macroset = MACROSET_NONE;
824: man->lastsec = man->lastnamed = SEC_NONE;
825: man->next = ROFF_NEXT_CHILD;
826: }
827:
828: void
829: roff_man_reset(struct roff_man *man)
830: {
831:
832: roff_man_free1(man);
833: roff_man_alloc1(man);
834: }
835:
836: void
837: roff_man_free(struct roff_man *man)
838: {
839:
840: roff_man_free1(man);
841: free(man);
842: }
843:
844: struct roff_man *
1.351 ! schwarze 845: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.265 schwarze 846: {
847: struct roff_man *man;
848:
849: man = mandoc_calloc(1, sizeof(*man));
850: man->roff = roff;
1.316 schwarze 851: man->os_s = os_s;
1.265 schwarze 852: man->quick = quick;
853: roff_man_alloc1(man);
1.296 schwarze 854: roff->man = man;
1.277 schwarze 855: return man;
1.67 kristaps 856: }
857:
1.266 schwarze 858: /* --- syntax tree handling ----------------------------------------------- */
859:
860: struct roff_node *
861: roff_node_alloc(struct roff_man *man, int line, int pos,
862: enum roff_type type, int tok)
863: {
864: struct roff_node *n;
865:
866: n = mandoc_calloc(1, sizeof(*n));
867: n->line = line;
868: n->pos = pos;
869: n->tok = tok;
870: n->type = type;
871: n->sec = man->lastsec;
872:
873: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 874: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 875: else
1.285 schwarze 876: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 877: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 878: n->flags |= NODE_LINE;
1.266 schwarze 879: man->flags &= ~MDOC_NEWLINE;
880:
1.277 schwarze 881: return n;
1.266 schwarze 882: }
883:
884: void
885: roff_node_append(struct roff_man *man, struct roff_node *n)
886: {
887:
888: switch (man->next) {
889: case ROFF_NEXT_SIBLING:
1.281 schwarze 890: if (man->last->next != NULL) {
891: n->next = man->last->next;
892: man->last->next->prev = n;
893: } else
894: man->last->parent->last = n;
1.266 schwarze 895: man->last->next = n;
896: n->prev = man->last;
897: n->parent = man->last->parent;
898: break;
899: case ROFF_NEXT_CHILD:
1.287 schwarze 900: if (man->last->child != NULL) {
901: n->next = man->last->child;
902: man->last->child->prev = n;
903: } else
904: man->last->last = n;
1.266 schwarze 905: man->last->child = n;
906: n->parent = man->last;
907: break;
908: default:
909: abort();
910: }
1.282 schwarze 911: man->last = n;
1.266 schwarze 912:
913: switch (n->type) {
914: case ROFFT_HEAD:
915: n->parent->head = n;
916: break;
917: case ROFFT_BODY:
1.282 schwarze 918: if (n->end != ENDBODY_NOT)
919: return;
1.266 schwarze 920: n->parent->body = n;
921: break;
922: case ROFFT_TAIL:
923: n->parent->tail = n;
924: break;
925: default:
1.282 schwarze 926: return;
1.266 schwarze 927: }
1.282 schwarze 928:
929: /*
930: * Copy over the normalised-data pointer of our parent. Not
931: * everybody has one, but copying a null pointer is fine.
932: */
933:
934: n->norm = n->parent->norm;
935: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 936: }
937:
1.267 schwarze 938: void
939: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
940: {
941: struct roff_node *n;
942:
943: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
944: n->string = roff_strdup(man->roff, word);
945: roff_node_append(man, n);
1.286 schwarze 946: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 947: man->next = ROFF_NEXT_SIBLING;
948: }
949:
950: void
951: roff_word_append(struct roff_man *man, const char *word)
952: {
953: struct roff_node *n;
954: char *addstr, *newstr;
955:
956: n = man->last;
957: addstr = roff_strdup(man->roff, word);
958: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
959: free(addstr);
960: free(n->string);
961: n->string = newstr;
962: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 963: }
964:
965: void
966: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
967: {
968: struct roff_node *n;
969:
970: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
971: roff_node_append(man, n);
972: man->next = ROFF_NEXT_CHILD;
973: }
974:
975: struct roff_node *
976: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
977: {
978: struct roff_node *n;
979:
980: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
981: roff_node_append(man, n);
982: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 983: return n;
1.267 schwarze 984: }
985:
1.266 schwarze 986: struct roff_node *
987: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
988: {
989: struct roff_node *n;
990:
991: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
992: roff_node_append(man, n);
993: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 994: return n;
1.266 schwarze 995: }
996:
997: struct roff_node *
998: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
999: {
1000: struct roff_node *n;
1001:
1002: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1003: roff_node_append(man, n);
1004: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1005: return n;
1.267 schwarze 1006: }
1007:
1.321 schwarze 1008: static void
1.346 schwarze 1009: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1010: {
1011: struct roff_node *n;
1.346 schwarze 1012: struct tbl_span *span;
1.267 schwarze 1013:
1014: if (man->macroset == MACROSET_MAN)
1.302 schwarze 1015: man_breakscope(man, ROFF_TS);
1.321 schwarze 1016: while ((span = tbl_span(tbl)) != NULL) {
1.346 schwarze 1017: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1018: n->span = span;
1019: roff_node_append(man, n);
1020: n->flags |= NODE_VALID | NODE_ENDED;
1021: man->next = ROFF_NEXT_SIBLING;
1022: }
1.266 schwarze 1023: }
1024:
1025: void
1026: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1027: {
1028:
1029: /* Adjust siblings. */
1030:
1031: if (n->prev)
1032: n->prev->next = n->next;
1033: if (n->next)
1034: n->next->prev = n->prev;
1035:
1036: /* Adjust parent. */
1037:
1038: if (n->parent != NULL) {
1039: if (n->parent->child == n)
1040: n->parent->child = n->next;
1041: if (n->parent->last == n)
1042: n->parent->last = n->prev;
1043: }
1044:
1045: /* Adjust parse point. */
1046:
1047: if (man == NULL)
1048: return;
1049: if (man->last == n) {
1050: if (n->prev == NULL) {
1051: man->last = n->parent;
1052: man->next = ROFF_NEXT_CHILD;
1053: } else {
1054: man->last = n->prev;
1055: man->next = ROFF_NEXT_SIBLING;
1056: }
1057: }
1058: if (man->first == n)
1059: man->first = NULL;
1.344 schwarze 1060: }
1061:
1062: void
1063: roff_node_relink(struct roff_man *man, struct roff_node *n)
1064: {
1065: roff_node_unlink(man, n);
1066: n->prev = n->next = NULL;
1067: roff_node_append(man, n);
1.266 schwarze 1068: }
1069:
1070: void
1071: roff_node_free(struct roff_node *n)
1072: {
1073:
1074: if (n->args != NULL)
1075: mdoc_argv_free(n->args);
1076: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1077: free(n->norm);
1.347 schwarze 1078: eqn_box_free(n->eqn);
1.266 schwarze 1079: free(n->string);
1080: free(n);
1081: }
1082:
1083: void
1084: roff_node_delete(struct roff_man *man, struct roff_node *n)
1085: {
1086:
1087: while (n->child != NULL)
1088: roff_node_delete(man, n->child);
1089: roff_node_unlink(man, n);
1090: roff_node_free(n);
1.269 schwarze 1091: }
1092:
1093: void
1094: deroff(char **dest, const struct roff_node *n)
1095: {
1096: char *cp;
1097: size_t sz;
1098:
1099: if (n->type != ROFFT_TEXT) {
1100: for (n = n->child; n != NULL; n = n->next)
1101: deroff(dest, n);
1102: return;
1103: }
1104:
1.288 schwarze 1105: /* Skip leading whitespace. */
1.269 schwarze 1106:
1.288 schwarze 1107: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1108: if (cp[0] == '\\' && cp[1] != '\0' &&
1109: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1110: cp++;
1.288 schwarze 1111: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1112: break;
1113: }
1114:
1.289 schwarze 1115: /* Skip trailing backslash. */
1116:
1117: sz = strlen(cp);
1.290 schwarze 1118: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1119: sz--;
1120:
1.269 schwarze 1121: /* Skip trailing whitespace. */
1122:
1.289 schwarze 1123: for (; sz; sz--)
1.269 schwarze 1124: if ( ! isspace((unsigned char)cp[sz-1]))
1125: break;
1126:
1127: /* Skip empty strings. */
1128:
1129: if (sz == 0)
1130: return;
1131:
1132: if (*dest == NULL) {
1133: *dest = mandoc_strndup(cp, sz);
1134: return;
1135: }
1136:
1137: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1138: free(*dest);
1139: *dest = cp;
1.266 schwarze 1140: }
1141:
1142: /* --- main functions of the roff parser ---------------------------------- */
1143:
1.94 kristaps 1144: /*
1.206 schwarze 1145: * In the current line, expand escape sequences that tend to get
1146: * used in numerical expressions and conditional requests.
1147: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1148: */
1.340 schwarze 1149: static int
1.238 schwarze 1150: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1151: {
1.339 schwarze 1152: struct mctx *ctx; /* current macro call context */
1.208 schwarze 1153: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1154: struct roff_node *n; /* used for header comments */
1.205 schwarze 1155: const char *start; /* start of the string to process */
1.209 schwarze 1156: char *stesc; /* start of an escape sequence ('\\') */
1.328 schwarze 1157: char *ep; /* end of comment string */
1.108 schwarze 1158: const char *stnam; /* start of the name, after "[(*" */
1159: const char *cp; /* end of the name, e.g. before ']' */
1160: const char *res; /* the string to be substituted */
1.238 schwarze 1161: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1162: size_t maxl; /* expected length of the escape name */
1163: size_t naml; /* actual length of the escape name */
1.339 schwarze 1164: size_t asz; /* length of the replacement */
1165: size_t rsz; /* length of the rest of the string */
1.237 schwarze 1166: enum mandoc_esc esc; /* type of the escape sequence */
1167: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1168: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1169: int npos; /* position in numeric expression */
1.218 schwarze 1170: int arg_complete; /* argument not interrupted by eol */
1.339 schwarze 1171: int quote_args; /* true for \\$@, false for \\$* */
1.303 schwarze 1172: int done; /* no more input available */
1.315 schwarze 1173: int deftype; /* type of definition to paste */
1.323 schwarze 1174: int rcsid; /* kind of RCS id seen */
1.327 schwarze 1175: char sign; /* increment number register */
1.206 schwarze 1176: char term; /* character terminating the escape */
1.94 kristaps 1177:
1.303 schwarze 1178: /* Search forward for comments. */
1179:
1180: done = 0;
1181: start = buf->buf + pos;
1182: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1183: if (stesc[0] != r->escape || stesc[1] == '\0')
1184: continue;
1185: stesc++;
1186: if (*stesc != '"' && *stesc != '#')
1187: continue;
1.313 schwarze 1188:
1189: /* Comment found, look for RCS id. */
1190:
1.323 schwarze 1191: rcsid = 0;
1.313 schwarze 1192: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1193: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1194: cp += 8;
1195: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1196: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1197: cp += 7;
1198: }
1199: if (cp != NULL &&
1200: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1201: strchr(cp, '$') != NULL) {
1.323 schwarze 1202: if (r->man->meta.rcsids & rcsid)
1.350 schwarze 1203: mandoc_msg(MANDOCERR_RCS_REP, ln,
1204: (int)(stesc - buf->buf) + 1,
1205: "%s", stesc + 1);
1.323 schwarze 1206: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1207: }
1.313 schwarze 1208:
1209: /* Handle trailing whitespace. */
1210:
1.328 schwarze 1211: ep = strchr(stesc--, '\0') - 1;
1212: if (*ep == '\n') {
1.303 schwarze 1213: done = 1;
1.328 schwarze 1214: ep--;
1.303 schwarze 1215: }
1.328 schwarze 1216: if (*ep == ' ' || *ep == '\t')
1.350 schwarze 1217: mandoc_msg(MANDOCERR_SPACE_EOL,
1218: ln, (int)(ep - buf->buf), NULL);
1.328 schwarze 1219:
1220: /*
1221: * Save comments preceding the title macro
1222: * in the syntax tree.
1223: */
1224:
1225: if (r->format == 0) {
1226: while (*ep == ' ' || *ep == '\t')
1227: ep--;
1228: ep[1] = '\0';
1229: n = roff_node_alloc(r->man,
1230: ln, stesc + 1 - buf->buf,
1231: ROFFT_COMMENT, TOKEN_NONE);
1232: n->string = mandoc_strdup(stesc + 2);
1233: roff_node_append(r->man, n);
1234: n->flags |= NODE_VALID | NODE_ENDED;
1235: r->man->next = ROFF_NEXT_SIBLING;
1236: }
1237:
1.334 schwarze 1238: /* Line continuation with comment. */
1239:
1240: if (stesc[1] == '#') {
1241: *stesc = '\0';
1.340 schwarze 1242: return ROFF_IGN | ROFF_APPEND;
1.334 schwarze 1243: }
1244:
1245: /* Discard normal comments. */
1.328 schwarze 1246:
1.335 schwarze 1247: while (stesc > start && stesc[-1] == ' ' &&
1248: (stesc == start + 1 || stesc[-2] != '\\'))
1.303 schwarze 1249: stesc--;
1250: *stesc = '\0';
1251: break;
1252: }
1253: if (stesc == start)
1254: return ROFF_CONT;
1255: stesc--;
1256:
1257: /* Notice the end of the input. */
1258:
1259: if (*stesc == '\n') {
1260: *stesc-- = '\0';
1261: done = 1;
1262: }
1263:
1.170 schwarze 1264: expand_count = 0;
1.303 schwarze 1265: while (stesc >= start) {
1.170 schwarze 1266:
1.205 schwarze 1267: /* Search backwards for the next backslash. */
1268:
1.303 schwarze 1269: if (*stesc != r->escape) {
1270: if (*stesc == '\\') {
1271: *stesc = '\0';
1272: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1273: buf->buf, stesc + 1) + 1;
1274: start = nbuf + pos;
1275: stesc = nbuf + (stesc - buf->buf);
1276: free(buf->buf);
1277: buf->buf = nbuf;
1278: }
1279: stesc--;
1.205 schwarze 1280: continue;
1.303 schwarze 1281: }
1.205 schwarze 1282:
1283: /* If it is escaped, skip it. */
1284:
1285: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1286: if (*cp != r->escape)
1.205 schwarze 1287: break;
1288:
1.238 schwarze 1289: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1290: while (stesc > cp)
1291: *stesc-- = '\\';
1.205 schwarze 1292: continue;
1.303 schwarze 1293: } else if (stesc[1] != '\0') {
1294: *stesc = '\\';
1295: } else {
1296: *stesc-- = '\0';
1297: if (done)
1298: continue;
1299: else
1.340 schwarze 1300: return ROFF_IGN | ROFF_APPEND;
1.205 schwarze 1301: }
1.108 schwarze 1302:
1.206 schwarze 1303: /* Decide whether to expand or to check only. */
1.108 schwarze 1304:
1.206 schwarze 1305: term = '\0';
1.205 schwarze 1306: cp = stesc + 1;
1.181 schwarze 1307: switch (*cp) {
1.207 schwarze 1308: case '*':
1.339 schwarze 1309: case '$':
1.181 schwarze 1310: res = NULL;
1311: break;
1.207 schwarze 1312: case 'B':
1313: case 'w':
1.206 schwarze 1314: term = cp[1];
1315: /* FALLTHROUGH */
1.207 schwarze 1316: case 'n':
1.327 schwarze 1317: sign = cp[1];
1318: if (sign == '+' || sign == '-')
1319: cp++;
1.181 schwarze 1320: res = ubuf;
1321: break;
1322: default:
1.237 schwarze 1323: esc = mandoc_escape(&cp, &stnam, &inaml);
1324: if (esc == ESCAPE_ERROR ||
1325: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1326: mchars_spec2cp(stnam, inaml) < 0))
1.350 schwarze 1327: mandoc_msg(MANDOCERR_ESC_BAD,
1328: ln, (int)(stesc - buf->buf),
1.219 schwarze 1329: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1330: stesc--;
1.205 schwarze 1331: continue;
1.152 kristaps 1332: }
1333:
1.205 schwarze 1334: if (EXPAND_LIMIT < ++expand_count) {
1.350 schwarze 1335: mandoc_msg(MANDOCERR_ROFFLOOP,
1.238 schwarze 1336: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1337: return ROFF_IGN;
1.205 schwarze 1338: }
1.108 schwarze 1339:
1340: /*
1341: * The third character decides the length
1.181 schwarze 1342: * of the name of the string or register.
1.108 schwarze 1343: * Save a pointer to the name.
1344: */
1345:
1.238 schwarze 1346: if (term == '\0') {
1.206 schwarze 1347: switch (*++cp) {
1.207 schwarze 1348: case '\0':
1.206 schwarze 1349: maxl = 0;
1350: break;
1.207 schwarze 1351: case '(':
1.206 schwarze 1352: cp++;
1353: maxl = 2;
1354: break;
1.207 schwarze 1355: case '[':
1.206 schwarze 1356: cp++;
1357: term = ']';
1358: maxl = 0;
1359: break;
1360: default:
1361: maxl = 1;
1362: break;
1363: }
1364: } else {
1365: cp += 2;
1.94 kristaps 1366: maxl = 0;
1367: }
1.108 schwarze 1368: stnam = cp;
1.94 kristaps 1369:
1.108 schwarze 1370: /* Advance to the end of the name. */
1.94 kristaps 1371:
1.253 schwarze 1372: naml = 0;
1.218 schwarze 1373: arg_complete = 1;
1.253 schwarze 1374: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1375: if (*cp == '\0') {
1.350 schwarze 1376: mandoc_msg(MANDOCERR_ESC_BAD, ln,
1377: (int)(stesc - buf->buf), "%s", stesc);
1.218 schwarze 1378: arg_complete = 0;
1.206 schwarze 1379: break;
1.153 kristaps 1380: }
1.238 schwarze 1381: if (maxl == 0 && *cp == term) {
1.206 schwarze 1382: cp++;
1.253 schwarze 1383: break;
1384: }
1385: if (*cp++ != '\\' || stesc[1] != 'w') {
1386: naml++;
1387: continue;
1388: }
1389: switch (mandoc_escape(&cp, NULL, NULL)) {
1390: case ESCAPE_SPECIAL:
1391: case ESCAPE_UNICODE:
1392: case ESCAPE_NUMBERED:
1393: case ESCAPE_OVERSTRIKE:
1394: naml++;
1395: break;
1396: default:
1.94 kristaps 1397: break;
1.206 schwarze 1398: }
1.94 kristaps 1399: }
1400:
1.108 schwarze 1401: /*
1402: * Retrieve the replacement string; if it is
1403: * undefined, resume searching for escapes.
1404: */
1405:
1.206 schwarze 1406: switch (stesc[1]) {
1.207 schwarze 1407: case '*':
1.315 schwarze 1408: if (arg_complete) {
1409: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1410: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1411:
1412: /*
1413: * If not overriden, let \*(.T
1414: * through to the formatters.
1415: */
1416:
1417: if (res == NULL && naml == 2 &&
1418: stnam[0] == '.' && stnam[1] == 'T') {
1419: roff_setstrn(&r->strtab,
1420: ".T", 2, NULL, 0, 0);
1421: stesc--;
1422: continue;
1423: }
1.315 schwarze 1424: }
1.206 schwarze 1425: break;
1.339 schwarze 1426: case '$':
1427: if (r->mstackpos < 0) {
1.350 schwarze 1428: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
1429: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1430: break;
1431: }
1432: ctx = r->mstack + r->mstackpos;
1433: npos = stesc[2] - '1';
1434: if (npos >= 0 && npos <= 8) {
1435: res = npos < ctx->argc ?
1436: ctx->argv[npos] : "";
1437: break;
1438: }
1439: if (stesc[2] == '*')
1440: quote_args = 0;
1441: else if (stesc[2] == '@')
1442: quote_args = 1;
1443: else {
1.350 schwarze 1444: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
1445: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1446: break;
1447: }
1448: asz = 0;
1449: for (npos = 0; npos < ctx->argc; npos++) {
1450: if (npos)
1451: asz++; /* blank */
1452: if (quote_args)
1453: asz += 2; /* quotes */
1454: asz += strlen(ctx->argv[npos]);
1455: }
1456: if (asz != 3) {
1457: rsz = buf->sz - (stesc - buf->buf) - 3;
1458: if (asz < 3)
1459: memmove(stesc + asz, stesc + 3, rsz);
1460: buf->sz += asz - 3;
1461: nbuf = mandoc_realloc(buf->buf, buf->sz);
1462: start = nbuf + pos;
1463: stesc = nbuf + (stesc - buf->buf);
1464: buf->buf = nbuf;
1465: if (asz > 3)
1466: memmove(stesc + asz, stesc + 3, rsz);
1467: }
1468: for (npos = 0; npos < ctx->argc; npos++) {
1469: if (npos)
1470: *stesc++ = ' ';
1471: if (quote_args)
1472: *stesc++ = '"';
1473: cp = ctx->argv[npos];
1474: while (*cp != '\0')
1475: *stesc++ = *cp++;
1476: if (quote_args)
1477: *stesc++ = '"';
1478: }
1479: continue;
1.207 schwarze 1480: case 'B':
1.206 schwarze 1481: npos = 0;
1.218 schwarze 1482: ubuf[0] = arg_complete &&
1.261 schwarze 1483: roff_evalnum(r, ln, stnam, &npos,
1484: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1485: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1486: ubuf[1] = '\0';
1487: break;
1.207 schwarze 1488: case 'n':
1.218 schwarze 1489: if (arg_complete)
1490: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1491: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1492: else
1493: ubuf[0] = '\0';
1.206 schwarze 1494: break;
1.207 schwarze 1495: case 'w':
1.218 schwarze 1496: /* use even incomplete args */
1.208 schwarze 1497: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1498: 24 * (int)naml);
1499: break;
1500: }
1.94 kristaps 1501:
1.238 schwarze 1502: if (res == NULL) {
1.339 schwarze 1503: if (stesc[1] == '*')
1.350 schwarze 1504: mandoc_msg(MANDOCERR_STR_UNDEF,
1505: ln, (int)(stesc - buf->buf),
1.339 schwarze 1506: "%.*s", (int)naml, stnam);
1.142 kristaps 1507: res = "";
1.246 schwarze 1508: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.350 schwarze 1509: mandoc_msg(MANDOCERR_ROFFLOOP,
1.246 schwarze 1510: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1511: return ROFF_IGN;
1.94 kristaps 1512: }
1513:
1.108 schwarze 1514: /* Replace the escape sequence by the string. */
1515:
1.209 schwarze 1516: *stesc = '\0';
1.238 schwarze 1517: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1518: buf->buf, res, cp) + 1;
1.94 kristaps 1519:
1.205 schwarze 1520: /* Prepare for the next replacement. */
1.94 kristaps 1521:
1.205 schwarze 1522: start = nbuf + pos;
1.238 schwarze 1523: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1524: free(buf->buf);
1525: buf->buf = nbuf;
1.154 kristaps 1526: }
1.277 schwarze 1527: return ROFF_CONT;
1.154 kristaps 1528: }
1529:
1530: /*
1.275 schwarze 1531: * Process text streams.
1.154 kristaps 1532: */
1.340 schwarze 1533: static int
1.305 schwarze 1534: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1535: {
1536: size_t sz;
1537: const char *start;
1.178 schwarze 1538: char *p;
1539: int isz;
1.154 kristaps 1540: enum mandoc_esc esc;
1541:
1.275 schwarze 1542: /* Spring the input line trap. */
1543:
1544: if (roffit_lines == 1) {
1545: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1546: free(buf->buf);
1547: buf->buf = p;
1548: buf->sz = isz + 1;
1549: *offs = 0;
1550: free(roffit_macro);
1551: roffit_lines = 0;
1.277 schwarze 1552: return ROFF_REPARSE;
1.275 schwarze 1553: } else if (roffit_lines > 1)
1554: --roffit_lines;
1555:
1.305 schwarze 1556: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1557: if (roffce_lines < 1) {
1558: r->man->last = roffce_node;
1559: r->man->next = ROFF_NEXT_SIBLING;
1560: roffce_lines = 0;
1561: roffce_node = NULL;
1562: } else
1563: roffce_lines--;
1564: }
1565:
1.275 schwarze 1566: /* Convert all breakable hyphens into ASCII_HYPH. */
1567:
1.238 schwarze 1568: start = p = buf->buf + pos;
1.154 kristaps 1569:
1.238 schwarze 1570: while (*p != '\0') {
1.154 kristaps 1571: sz = strcspn(p, "-\\");
1572: p += sz;
1573:
1.238 schwarze 1574: if (*p == '\0')
1.159 kristaps 1575: break;
1576:
1.238 schwarze 1577: if (*p == '\\') {
1.154 kristaps 1578: /* Skip over escapes. */
1579: p++;
1.189 schwarze 1580: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1581: if (esc == ESCAPE_ERROR)
1.154 kristaps 1582: break;
1.264 schwarze 1583: while (*p == '-')
1584: p++;
1.155 kristaps 1585: continue;
1.159 kristaps 1586: } else if (p == start) {
1.158 kristaps 1587: p++;
1.155 kristaps 1588: continue;
1.158 kristaps 1589: }
1.155 kristaps 1590:
1.171 schwarze 1591: if (isalpha((unsigned char)p[-1]) &&
1592: isalpha((unsigned char)p[1]))
1.155 kristaps 1593: *p = ASCII_HYPH;
1594: p++;
1.94 kristaps 1595: }
1.277 schwarze 1596: return ROFF_CONT;
1.94 kristaps 1597: }
1598:
1.340 schwarze 1599: int
1.238 schwarze 1600: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1601: {
1.294 schwarze 1602: enum roff_tok t;
1.340 schwarze 1603: int e;
1.238 schwarze 1604: int pos; /* parse point */
1.243 schwarze 1605: int spos; /* saved parse point for messages */
1.238 schwarze 1606: int ppos; /* original offset in buf->buf */
1607: int ctl; /* macro line (boolean) */
1608:
1609: ppos = pos = *offs;
1.79 kristaps 1610:
1.230 schwarze 1611: /* Handle in-line equation delimiters. */
1612:
1.236 schwarze 1613: if (r->tbl == NULL &&
1614: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1615: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1616: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1617: if (e == ROFF_REPARSE)
1.277 schwarze 1618: return e;
1.230 schwarze 1619: assert(e == ROFF_CONT);
1620: }
1621:
1622: /* Expand some escape sequences. */
1.94 kristaps 1623:
1.238 schwarze 1624: e = roff_res(r, buf, ln, pos);
1.340 schwarze 1625: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1626: return e;
1.238 schwarze 1627: assert(e == ROFF_CONT);
1.94 kristaps 1628:
1.238 schwarze 1629: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1630:
1.94 kristaps 1631: /*
1.79 kristaps 1632: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1633: * text through the macro's filter.
1634: * Equations process all content themselves.
1635: * Tables process almost all content themselves, but we want
1636: * to warn about macros before passing it there.
1.79 kristaps 1637: */
1.74 kristaps 1638:
1.252 schwarze 1639: if (r->last != NULL && ! ctl) {
1.78 kristaps 1640: t = r->last->tok;
1.238 schwarze 1641: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1642: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1643: return e;
1.340 schwarze 1644: e &= ~ROFF_MASK;
1645: } else
1646: e = ROFF_IGN;
1.319 schwarze 1647: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1648: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1649: return e;
1.319 schwarze 1650: }
1.321 schwarze 1651: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1652: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1653: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1654: return e;
1.321 schwarze 1655: }
1.252 schwarze 1656: if ( ! ctl)
1.340 schwarze 1657: return roff_parsetext(r, buf, pos, offs) | e;
1.228 schwarze 1658:
1659: /* Skip empty request lines. */
1660:
1.238 schwarze 1661: if (buf->buf[pos] == '"') {
1.350 schwarze 1662: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1663: return ROFF_IGN;
1.238 schwarze 1664: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1665: return ROFF_IGN;
1.67 kristaps 1666:
1.79 kristaps 1667: /*
1668: * If a scope is open, go to the child handler for that macro,
1669: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1670: * Don't do so if an equation is open.
1.79 kristaps 1671: */
1.78 kristaps 1672:
1.79 kristaps 1673: if (r->last) {
1674: t = r->last->tok;
1.277 schwarze 1675: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1676: }
1.78 kristaps 1677:
1.243 schwarze 1678: /* No scope is open. This is a new request or macro. */
1679:
1680: spos = pos;
1681: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1682:
1683: /* Tables ignore most macros. */
1684:
1.308 schwarze 1685: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1686: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.350 schwarze 1687: mandoc_msg(MANDOCERR_TBLMACRO,
1688: ln, pos, "%s", buf->buf + spos);
1.308 schwarze 1689: if (t != TOKEN_NONE)
1.277 schwarze 1690: return ROFF_IGN;
1.257 schwarze 1691: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1692: pos++;
1.291 schwarze 1693: while (buf->buf[pos] == ' ')
1.257 schwarze 1694: pos++;
1.321 schwarze 1695: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1696: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1697: return ROFF_IGN;
1.243 schwarze 1698: }
1699:
1.305 schwarze 1700: /* For now, let high level macros abort .ce mode. */
1701:
1702: if (ctl && roffce_node != NULL &&
1.324 schwarze 1703: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1704: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1705: r->man->last = roffce_node;
1706: r->man->next = ROFF_NEXT_SIBLING;
1707: roffce_lines = 0;
1708: roffce_node = NULL;
1709: }
1710:
1.79 kristaps 1711: /*
1.243 schwarze 1712: * This is neither a roff request nor a user-defined macro.
1713: * Let the standard macro set parsers handle it.
1.79 kristaps 1714: */
1.67 kristaps 1715:
1.294 schwarze 1716: if (t == TOKEN_NONE)
1.277 schwarze 1717: return ROFF_CONT;
1.243 schwarze 1718:
1719: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1720:
1.296 schwarze 1721: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1722: }
1723:
1.339 schwarze 1724: /*
1725: * Internal interface function to tell the roff parser that execution
1726: * of the current macro ended. This is required because macro
1727: * definitions usually do not end with a .return request.
1728: */
1729: void
1730: roff_userret(struct roff *r)
1731: {
1732: struct mctx *ctx;
1733: int i;
1734:
1735: assert(r->mstackpos >= 0);
1736: ctx = r->mstack + r->mstackpos;
1737: for (i = 0; i < ctx->argc; i++)
1738: free(ctx->argv[i]);
1739: ctx->argc = 0;
1740: r->mstackpos--;
1741: }
1742:
1.117 kristaps 1743: void
1.74 kristaps 1744: roff_endparse(struct roff *r)
1745: {
1.321 schwarze 1746: if (r->last != NULL)
1.350 schwarze 1747: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1748: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 1749:
1.321 schwarze 1750: if (r->eqn != NULL) {
1.350 schwarze 1751: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 1752: r->eqn->node->line, r->eqn->node->pos, "EQ");
1753: eqn_parse(r->eqn);
1754: r->eqn = NULL;
1.125 kristaps 1755: }
1756:
1.321 schwarze 1757: if (r->tbl != NULL) {
1.346 schwarze 1758: tbl_end(r->tbl, 1);
1.321 schwarze 1759: r->tbl = NULL;
1.117 kristaps 1760: }
1.67 kristaps 1761: }
1762:
1763: /*
1764: * Parse a roff node's type from the input buffer. This must be in the
1765: * form of ".foo xxx" in the usual way.
1766: */
1.294 schwarze 1767: static enum roff_tok
1.214 schwarze 1768: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1769: {
1.214 schwarze 1770: char *cp;
1.106 kristaps 1771: const char *mac;
1772: size_t maclen;
1.315 schwarze 1773: int deftype;
1.294 schwarze 1774: enum roff_tok t;
1.67 kristaps 1775:
1.214 schwarze 1776: cp = buf + *pos;
1777:
1778: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1779: return TOKEN_NONE;
1.67 kristaps 1780:
1.214 schwarze 1781: mac = cp;
1782: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1783:
1.315 schwarze 1784: deftype = ROFFDEF_USER | ROFFDEF_REN;
1785: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1786: switch (deftype) {
1787: case ROFFDEF_USER:
1788: t = ROFF_USERDEF;
1789: break;
1790: case ROFFDEF_REN:
1791: t = ROFF_RENAMED;
1792: break;
1793: default:
1794: t = roffhash_find(r->reqtab, mac, maclen);
1795: break;
1796: }
1.294 schwarze 1797: if (t != TOKEN_NONE)
1.214 schwarze 1798: *pos = cp - buf;
1.325 schwarze 1799: else if (deftype == ROFFDEF_UNDEF) {
1800: /* Using an undefined macro defines it to be empty. */
1801: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1802: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1803: }
1.277 schwarze 1804: return t;
1.67 kristaps 1805: }
1806:
1.266 schwarze 1807: /* --- handling of request blocks ----------------------------------------- */
1808:
1.340 schwarze 1809: static int
1.76 kristaps 1810: roff_cblock(ROFF_ARGS)
1.67 kristaps 1811: {
1812:
1.79 kristaps 1813: /*
1814: * A block-close `..' should only be invoked as a child of an
1815: * ignore macro, otherwise raise a warning and just ignore it.
1816: */
1817:
1.238 schwarze 1818: if (r->last == NULL) {
1.350 schwarze 1819: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 1820: return ROFF_IGN;
1.76 kristaps 1821: }
1.67 kristaps 1822:
1.81 kristaps 1823: switch (r->last->tok) {
1.207 schwarze 1824: case ROFF_am:
1.220 schwarze 1825: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1826: case ROFF_ami:
1827: case ROFF_de:
1.108 schwarze 1828: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1829: case ROFF_dei:
1830: case ROFF_ig:
1.81 kristaps 1831: break;
1832: default:
1.350 schwarze 1833: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 1834: return ROFF_IGN;
1.76 kristaps 1835: }
1.67 kristaps 1836:
1.238 schwarze 1837: if (buf->buf[pos] != '\0')
1.350 schwarze 1838: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 1839: ".. %s", buf->buf + pos);
1.71 kristaps 1840:
1841: roffnode_pop(r);
1.76 kristaps 1842: roffnode_cleanscope(r);
1.277 schwarze 1843: return ROFF_IGN;
1.71 kristaps 1844:
1.67 kristaps 1845: }
1846:
1.340 schwarze 1847: static int
1.76 kristaps 1848: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1849: {
1.340 schwarze 1850: int inloop;
1.67 kristaps 1851:
1.340 schwarze 1852: inloop = 0;
1853: while (r->last != NULL) {
1.173 schwarze 1854: if (--r->last->endspan != 0)
1.76 kristaps 1855: break;
1.340 schwarze 1856: inloop += roffnode_pop(r);
1.76 kristaps 1857: }
1.340 schwarze 1858: return inloop;
1.67 kristaps 1859: }
1860:
1.340 schwarze 1861: static int
1.195 schwarze 1862: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1863: {
1.76 kristaps 1864: if (NULL == r->last) {
1.350 schwarze 1865: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 1866: return 0;
1.76 kristaps 1867: }
1868:
1.82 kristaps 1869: switch (r->last->tok) {
1.207 schwarze 1870: case ROFF_el:
1871: case ROFF_ie:
1872: case ROFF_if:
1.340 schwarze 1873: case ROFF_while:
1.82 kristaps 1874: break;
1875: default:
1.350 schwarze 1876: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 1877: return 0;
1.75 kristaps 1878: }
1879:
1.76 kristaps 1880: if (r->last->endspan > -1) {
1.350 schwarze 1881: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 1882: return 0;
1.76 kristaps 1883: }
1884:
1.340 schwarze 1885: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 1886: }
1887:
1.340 schwarze 1888: static int
1.80 kristaps 1889: roff_block(ROFF_ARGS)
1.76 kristaps 1890: {
1.315 schwarze 1891: const char *name, *value;
1892: char *call, *cp, *iname, *rname;
1893: size_t csz, namesz, rsz;
1894: int deftype;
1.106 kristaps 1895:
1.220 schwarze 1896: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1897:
1.238 schwarze 1898: if (tok == ROFF_de1)
1.220 schwarze 1899: tok = ROFF_de;
1.251 schwarze 1900: else if (tok == ROFF_dei1)
1901: tok = ROFF_dei;
1.238 schwarze 1902: else if (tok == ROFF_am1)
1.220 schwarze 1903: tok = ROFF_am;
1.251 schwarze 1904: else if (tok == ROFF_ami1)
1905: tok = ROFF_ami;
1.220 schwarze 1906:
1907: /* Parse the macro name argument. */
1908:
1.238 schwarze 1909: cp = buf->buf + pos;
1910: if (tok == ROFF_ig) {
1.220 schwarze 1911: iname = NULL;
1912: namesz = 0;
1913: } else {
1914: iname = cp;
1915: namesz = roff_getname(r, &cp, ln, ppos);
1916: iname[namesz] = '\0';
1917: }
1.107 kristaps 1918:
1.220 schwarze 1919: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1920:
1.238 schwarze 1921: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1922: deftype = ROFFDEF_USER;
1923: name = roff_getstrn(r, iname, namesz, &deftype);
1924: if (name == NULL) {
1.350 schwarze 1925: mandoc_msg(MANDOCERR_STR_UNDEF,
1926: ln, (int)(iname - buf->buf),
1.220 schwarze 1927: "%.*s", (int)namesz, iname);
1928: namesz = 0;
1929: } else
1930: namesz = strlen(name);
1931: } else
1932: name = iname;
1.107 kristaps 1933:
1.238 schwarze 1934: if (namesz == 0 && tok != ROFF_ig) {
1.350 schwarze 1935: mandoc_msg(MANDOCERR_REQ_EMPTY,
1936: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 1937: return ROFF_IGN;
1.220 schwarze 1938: }
1.80 kristaps 1939:
1.106 kristaps 1940: roffnode_push(r, tok, name, ln, ppos);
1941:
1942: /*
1943: * At the beginning of a `de' macro, clear the existing string
1944: * with the same name, if there is one. New content will be
1.193 schwarze 1945: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1946: */
1.107 kristaps 1947:
1.311 schwarze 1948: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 1949: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 1950: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 1951: } else if (tok == ROFF_am || tok == ROFF_ami) {
1952: deftype = ROFFDEF_ANY;
1953: value = roff_getstrn(r, iname, namesz, &deftype);
1954: switch (deftype) { /* Before appending, ... */
1955: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1956: roff_setstrn(&r->strtab, name, namesz,
1957: value, strlen(value), 0);
1958: break;
1959: case ROFFDEF_REN: /* call original standard macro. */
1960: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1961: (int)strlen(value), value);
1962: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1963: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1964: free(call);
1965: break;
1966: case ROFFDEF_STD: /* rename and call standard macro. */
1967: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1968: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1969: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1970: (int)rsz, rname);
1971: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1972: free(call);
1973: free(rname);
1974: break;
1975: default:
1976: break;
1977: }
1.311 schwarze 1978: }
1.76 kristaps 1979:
1.238 schwarze 1980: if (*cp == '\0')
1.277 schwarze 1981: return ROFF_IGN;
1.78 kristaps 1982:
1.220 schwarze 1983: /* Get the custom end marker. */
1.107 kristaps 1984:
1.220 schwarze 1985: iname = cp;
1.213 schwarze 1986: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1987:
1988: /* Resolve the end marker if it is indirect. */
1989:
1.238 schwarze 1990: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1991: deftype = ROFFDEF_USER;
1992: name = roff_getstrn(r, iname, namesz, &deftype);
1993: if (name == NULL) {
1.350 schwarze 1994: mandoc_msg(MANDOCERR_STR_UNDEF,
1995: ln, (int)(iname - buf->buf),
1.220 schwarze 1996: "%.*s", (int)namesz, iname);
1997: namesz = 0;
1998: } else
1999: namesz = strlen(name);
2000: } else
2001: name = iname;
2002:
1.213 schwarze 2003: if (namesz)
2004: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2005:
1.238 schwarze 2006: if (*cp != '\0')
1.350 schwarze 2007: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2008: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2009:
1.277 schwarze 2010: return ROFF_IGN;
1.78 kristaps 2011: }
2012:
1.340 schwarze 2013: static int
1.80 kristaps 2014: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2015: {
1.294 schwarze 2016: enum roff_tok t;
1.79 kristaps 2017: int i, j;
2018:
2019: /*
2020: * First check whether a custom macro exists at this level. If
2021: * it does, then check against it. This is some of groff's
2022: * stranger behaviours. If we encountered a custom end-scope
2023: * tag and that tag also happens to be a "real" macro, then we
2024: * need to try interpreting it again as a real macro. If it's
2025: * not, then return ignore. Else continue.
2026: */
2027:
2028: if (r->last->end) {
1.130 kristaps 2029: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2030: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2031: break;
2032:
1.238 schwarze 2033: if (r->last->end[j] == '\0' &&
2034: (buf->buf[i] == '\0' ||
2035: buf->buf[i] == ' ' ||
2036: buf->buf[i] == '\t')) {
1.79 kristaps 2037: roffnode_pop(r);
2038: roffnode_cleanscope(r);
2039:
1.238 schwarze 2040: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2041: i++;
2042:
2043: pos = i;
1.238 schwarze 2044: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2045: TOKEN_NONE)
1.277 schwarze 2046: return ROFF_RERUN;
2047: return ROFF_IGN;
1.79 kristaps 2048: }
2049: }
2050:
2051: /*
2052: * If we have no custom end-query or lookup failed, then try
2053: * pulling it out of the hashtable.
2054: */
2055:
1.238 schwarze 2056: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 2057:
1.238 schwarze 2058: if (t != ROFF_cblock) {
2059: if (tok != ROFF_ig)
2060: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 2061: return ROFF_IGN;
1.106 kristaps 2062: }
1.79 kristaps 2063:
1.277 schwarze 2064: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2065: }
2066:
1.340 schwarze 2067: static int
1.80 kristaps 2068: roff_block_text(ROFF_ARGS)
1.78 kristaps 2069: {
2070:
1.238 schwarze 2071: if (tok != ROFF_ig)
2072: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2073:
1.277 schwarze 2074: return ROFF_IGN;
1.78 kristaps 2075: }
2076:
1.340 schwarze 2077: static int
1.82 kristaps 2078: roff_cond_sub(ROFF_ARGS)
2079: {
1.340 schwarze 2080: char *ep;
2081: int endloop, irc, rr;
1.294 schwarze 2082: enum roff_tok t;
1.82 kristaps 2083:
1.340 schwarze 2084: irc = ROFF_IGN;
1.82 kristaps 2085: rr = r->last->rule;
1.340 schwarze 2086: endloop = tok != ROFF_while ? ROFF_IGN :
2087: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2088: if (roffnode_cleanscope(r))
2089: irc |= endloop;
1.144 kristaps 2090:
1.196 schwarze 2091: /*
2092: * If `\}' occurs on a macro line without a preceding macro,
2093: * drop the line completely.
2094: */
2095:
1.238 schwarze 2096: ep = buf->buf + pos;
2097: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 2098: rr = 0;
1.196 schwarze 2099:
1.343 schwarze 2100: /*
2101: * The closing delimiter `\}' rewinds the conditional scope
2102: * but is otherwise ignored when interpreting the line.
2103: */
1.144 kristaps 2104:
1.238 schwarze 2105: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2106: switch (ep[1]) {
2107: case '}':
2108: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2109: if (roff_ccond(r, ln, ep - buf->buf))
2110: irc |= endloop;
1.318 schwarze 2111: break;
2112: case '\0':
2113: ++ep;
2114: break;
2115: default:
2116: ep += 2;
2117: break;
1.197 schwarze 2118: }
1.177 schwarze 2119: }
1.318 schwarze 2120:
2121: /*
2122: * Fully handle known macros when they are structurally
2123: * required or when the conditional evaluated to true.
2124: */
2125:
2126: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.340 schwarze 2127: irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
2128: (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
2129: rr ? ROFF_CONT : ROFF_IGN;
2130: return irc;
1.82 kristaps 2131: }
2132:
1.340 schwarze 2133: static int
1.82 kristaps 2134: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2135: {
1.140 kristaps 2136: char *ep;
1.340 schwarze 2137: int endloop, irc, rr;
1.82 kristaps 2138:
1.340 schwarze 2139: irc = ROFF_IGN;
1.82 kristaps 2140: rr = r->last->rule;
1.340 schwarze 2141: endloop = tok != ROFF_while ? ROFF_IGN :
2142: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2143: if (roffnode_cleanscope(r))
2144: irc |= endloop;
1.82 kristaps 2145:
1.343 schwarze 2146: /*
2147: * If `\}' occurs on a text line with neither preceding
2148: * nor following characters, drop the line completely.
2149: */
2150:
1.238 schwarze 2151: ep = buf->buf + pos;
1.343 schwarze 2152: if (strcmp(ep, "\\}") == 0)
2153: rr = 0;
2154:
2155: /*
2156: * The closing delimiter `\}' rewinds the conditional scope
2157: * but is otherwise ignored when interpreting the line.
2158: */
2159:
1.238 schwarze 2160: while ((ep = strchr(ep, '\\')) != NULL) {
1.343 schwarze 2161: switch (ep[1]) {
2162: case '}':
2163: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2164: if (roff_ccond(r, ln, ep - buf->buf))
1.340 schwarze 2165: irc |= endloop;
1.343 schwarze 2166: break;
2167: case '\0':
2168: ++ep;
2169: break;
2170: default:
2171: ep += 2;
2172: break;
1.197 schwarze 2173: }
1.78 kristaps 2174: }
1.340 schwarze 2175: if (rr)
2176: irc |= ROFF_CONT;
2177: return irc;
1.74 kristaps 2178: }
2179:
1.266 schwarze 2180: /* --- handling of numeric and conditional expressions -------------------- */
2181:
1.204 schwarze 2182: /*
2183: * Parse a single signed integer number. Stop at the first non-digit.
2184: * If there is at least one digit, return success and advance the
2185: * parse point, else return failure and let the parse point unchanged.
2186: * Ignore overflows, treat them just like the C language.
2187: */
1.184 schwarze 2188: static int
1.261 schwarze 2189: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2190: {
1.261 schwarze 2191: int myres, scaled, n, p;
1.206 schwarze 2192:
2193: if (NULL == res)
2194: res = &myres;
1.184 schwarze 2195:
2196: p = *pos;
2197: n = v[p] == '-';
1.261 schwarze 2198: if (n || v[p] == '+')
1.184 schwarze 2199: p++;
2200:
1.261 schwarze 2201: if (flags & ROFFNUM_WHITE)
2202: while (isspace((unsigned char)v[p]))
2203: p++;
2204:
1.184 schwarze 2205: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2206: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2207: if (p == *pos + n)
2208: return 0;
2209:
2210: if (n)
2211: *res = -*res;
2212:
1.254 schwarze 2213: /* Each number may be followed by one optional scaling unit. */
2214:
2215: switch (v[p]) {
2216: case 'f':
1.261 schwarze 2217: scaled = *res * 65536;
1.254 schwarze 2218: break;
2219: case 'i':
1.261 schwarze 2220: scaled = *res * 240;
1.254 schwarze 2221: break;
2222: case 'c':
1.261 schwarze 2223: scaled = *res * 240 / 2.54;
1.254 schwarze 2224: break;
2225: case 'v':
2226: case 'P':
1.261 schwarze 2227: scaled = *res * 40;
1.254 schwarze 2228: break;
2229: case 'm':
2230: case 'n':
1.261 schwarze 2231: scaled = *res * 24;
1.254 schwarze 2232: break;
2233: case 'p':
1.261 schwarze 2234: scaled = *res * 10 / 3;
1.254 schwarze 2235: break;
2236: case 'u':
1.261 schwarze 2237: scaled = *res;
1.254 schwarze 2238: break;
2239: case 'M':
1.261 schwarze 2240: scaled = *res * 6 / 25;
1.254 schwarze 2241: break;
2242: default:
1.261 schwarze 2243: scaled = *res;
1.254 schwarze 2244: p--;
2245: break;
2246: }
1.261 schwarze 2247: if (flags & ROFFNUM_SCALE)
2248: *res = scaled;
1.254 schwarze 2249:
2250: *pos = p + 1;
1.277 schwarze 2251: return 1;
1.184 schwarze 2252: }
2253:
1.198 schwarze 2254: /*
2255: * Evaluate a string comparison condition.
2256: * The first character is the delimiter.
2257: * Succeed if the string up to its second occurrence
2258: * matches the string up to its third occurence.
2259: * Advance the cursor after the third occurrence
2260: * or lacking that, to the end of the line.
2261: */
2262: static int
2263: roff_evalstrcond(const char *v, int *pos)
2264: {
2265: const char *s1, *s2, *s3;
2266: int match;
2267:
2268: match = 0;
2269: s1 = v + *pos; /* initial delimiter */
2270: s2 = s1 + 1; /* for scanning the first string */
2271: s3 = strchr(s2, *s1); /* for scanning the second string */
2272:
2273: if (NULL == s3) /* found no middle delimiter */
2274: goto out;
2275:
2276: while ('\0' != *++s3) {
2277: if (*s2 != *s3) { /* mismatch */
2278: s3 = strchr(s3, *s1);
2279: break;
2280: }
2281: if (*s3 == *s1) { /* found the final delimiter */
2282: match = 1;
2283: break;
2284: }
2285: s2++;
2286: }
2287:
2288: out:
2289: if (NULL == s3)
2290: s3 = strchr(s2, '\0');
1.242 schwarze 2291: else if (*s3 != '\0')
1.198 schwarze 2292: s3++;
2293: *pos = s3 - v;
1.277 schwarze 2294: return match;
1.198 schwarze 2295: }
2296:
1.204 schwarze 2297: /*
2298: * Evaluate an optionally negated single character, numerical,
2299: * or string condition.
2300: */
1.198 schwarze 2301: static int
1.271 schwarze 2302: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2303: {
1.336 schwarze 2304: const char *start, *end;
2305: char *cp, *name;
2306: size_t sz;
2307: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2308:
1.198 schwarze 2309: if ('!' == v[*pos]) {
2310: wanttrue = 0;
2311: (*pos)++;
2312: } else
2313: wanttrue = 1;
2314:
1.88 kristaps 2315: switch (v[*pos]) {
1.240 schwarze 2316: case '\0':
1.277 schwarze 2317: return 0;
1.207 schwarze 2318: case 'n':
2319: case 'o':
1.88 kristaps 2320: (*pos)++;
1.277 schwarze 2321: return wanttrue;
1.207 schwarze 2322: case 'e':
2323: case 't':
1.239 schwarze 2324: case 'v':
1.88 kristaps 2325: (*pos)++;
1.277 schwarze 2326: return !wanttrue;
1.336 schwarze 2327: case 'c':
2328: do {
2329: (*pos)++;
2330: } while (v[*pos] == ' ');
2331:
2332: /*
2333: * Quirk for groff compatibility:
2334: * The horizontal tab is neither available nor unavailable.
2335: */
2336:
2337: if (v[*pos] == '\t') {
2338: (*pos)++;
2339: return 0;
2340: }
2341:
2342: /* Printable ASCII characters are available. */
2343:
2344: if (v[*pos] != '\\') {
2345: (*pos)++;
2346: return wanttrue;
2347: }
2348:
2349: end = v + ++*pos;
2350: switch (mandoc_escape(&end, &start, &len)) {
2351: case ESCAPE_SPECIAL:
2352: istrue = mchars_spec2cp(start, len) != -1;
2353: break;
2354: case ESCAPE_UNICODE:
2355: istrue = 1;
2356: break;
2357: case ESCAPE_NUMBERED:
2358: istrue = mchars_num2char(start, len) != -1;
2359: break;
2360: default:
2361: istrue = !wanttrue;
2362: break;
2363: }
2364: *pos = end - v;
2365: return istrue == wanttrue;
1.310 schwarze 2366: case 'd':
1.271 schwarze 2367: case 'r':
1.310 schwarze 2368: cp = v + *pos + 1;
2369: while (*cp == ' ')
2370: cp++;
2371: name = cp;
2372: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2373: if (sz == 0)
2374: istrue = 0;
2375: else if (v[*pos] == 'r')
2376: istrue = roff_hasregn(r, name, sz);
2377: else {
2378: deftype = ROFFDEF_ANY;
2379: roff_getstrn(r, name, sz, &deftype);
2380: istrue = !!deftype;
2381: }
1.271 schwarze 2382: *pos = cp - v;
1.310 schwarze 2383: return istrue == wanttrue;
1.88 kristaps 2384: default:
2385: break;
2386: }
2387:
1.241 schwarze 2388: savepos = *pos;
1.261 schwarze 2389: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2390: return (number > 0) == wanttrue;
1.241 schwarze 2391: else if (*pos == savepos)
1.277 schwarze 2392: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2393: else
1.277 schwarze 2394: return 0;
1.88 kristaps 2395: }
2396:
1.340 schwarze 2397: static int
1.103 kristaps 2398: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2399: {
1.123 schwarze 2400:
1.277 schwarze 2401: return ROFF_IGN;
1.89 kristaps 2402: }
2403:
1.340 schwarze 2404: static int
1.251 schwarze 2405: roff_insec(ROFF_ARGS)
2406: {
2407:
1.350 schwarze 2408: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2409: return ROFF_IGN;
1.251 schwarze 2410: }
2411:
1.340 schwarze 2412: static int
1.251 schwarze 2413: roff_unsupp(ROFF_ARGS)
2414: {
2415:
1.350 schwarze 2416: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2417: return ROFF_IGN;
1.251 schwarze 2418: }
2419:
1.340 schwarze 2420: static int
1.82 kristaps 2421: roff_cond(ROFF_ARGS)
1.74 kristaps 2422: {
1.340 schwarze 2423: int irc;
1.173 schwarze 2424:
2425: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2426:
1.207 schwarze 2427: /*
1.134 kristaps 2428: * An `.el' has no conditional body: it will consume the value
2429: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2430: * defaults to DENY.
1.134 kristaps 2431: *
2432: * If we're not an `el', however, then evaluate the conditional.
2433: */
1.133 kristaps 2434:
1.238 schwarze 2435: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2436: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2437: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2438:
1.134 kristaps 2439: /*
2440: * An if-else will put the NEGATION of the current evaluated
2441: * conditional into the stack of rules.
2442: */
2443:
1.238 schwarze 2444: if (tok == ROFF_ie) {
1.223 schwarze 2445: if (r->rstackpos + 1 == r->rstacksz) {
2446: r->rstacksz += 16;
2447: r->rstack = mandoc_reallocarray(r->rstack,
2448: r->rstacksz, sizeof(int));
1.134 kristaps 2449: }
1.198 schwarze 2450: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2451: }
1.88 kristaps 2452:
2453: /* If the parent has false as its rule, then so do we. */
2454:
1.198 schwarze 2455: if (r->last->parent && !r->last->parent->rule)
2456: r->last->rule = 0;
1.88 kristaps 2457:
2458: /*
1.173 schwarze 2459: * Determine scope.
2460: * If there is nothing on the line after the conditional,
2461: * not even whitespace, use next-line scope.
1.340 schwarze 2462: * Except that .while does not support next-line scope.
1.88 kristaps 2463: */
1.74 kristaps 2464:
1.340 schwarze 2465: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2466: r->last->endspan = 2;
2467: goto out;
2468: }
2469:
1.238 schwarze 2470: while (buf->buf[pos] == ' ')
1.173 schwarze 2471: pos++;
2472:
2473: /* An opening brace requests multiline scope. */
1.75 kristaps 2474:
1.238 schwarze 2475: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2476: r->last->endspan = -1;
2477: pos += 2;
1.272 schwarze 2478: while (buf->buf[pos] == ' ')
2479: pos++;
1.173 schwarze 2480: goto out;
1.207 schwarze 2481: }
1.74 kristaps 2482:
1.77 kristaps 2483: /*
1.173 schwarze 2484: * Anything else following the conditional causes
2485: * single-line scope. Warn if the scope contains
2486: * nothing but trailing whitespace.
1.77 kristaps 2487: */
2488:
1.238 schwarze 2489: if (buf->buf[pos] == '\0')
1.350 schwarze 2490: mandoc_msg(MANDOCERR_COND_EMPTY,
2491: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2492:
1.173 schwarze 2493: r->last->endspan = 1;
1.74 kristaps 2494:
1.173 schwarze 2495: out:
1.75 kristaps 2496: *offs = pos;
1.340 schwarze 2497: irc = ROFF_RERUN;
2498: if (tok == ROFF_while)
2499: irc |= ROFF_WHILE;
2500: return irc;
1.83 schwarze 2501: }
2502:
1.340 schwarze 2503: static int
1.92 schwarze 2504: roff_ds(ROFF_ARGS)
2505: {
1.212 schwarze 2506: char *string;
2507: const char *name;
2508: size_t namesz;
1.96 kristaps 2509:
1.251 schwarze 2510: /* Ignore groff compatibility mode for now. */
2511:
2512: if (tok == ROFF_ds1)
2513: tok = ROFF_ds;
2514: else if (tok == ROFF_as1)
2515: tok = ROFF_as;
2516:
1.96 kristaps 2517: /*
1.212 schwarze 2518: * The first word is the name of the string.
2519: * If it is empty or terminated by an escape sequence,
2520: * abort the `ds' request without defining anything.
1.96 kristaps 2521: */
1.92 schwarze 2522:
1.238 schwarze 2523: name = string = buf->buf + pos;
2524: if (*name == '\0')
1.277 schwarze 2525: return ROFF_IGN;
1.92 schwarze 2526:
1.212 schwarze 2527: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2528: if (name[namesz] == '\\')
1.277 schwarze 2529: return ROFF_IGN;
1.212 schwarze 2530:
2531: /* Read past the initial double-quote, if any. */
1.238 schwarze 2532: if (*string == '"')
1.92 schwarze 2533: string++;
2534:
1.96 kristaps 2535: /* The rest is the value. */
1.212 schwarze 2536: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2537: ROFF_as == tok);
1.311 schwarze 2538: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2539: return ROFF_IGN;
1.92 schwarze 2540: }
2541:
1.204 schwarze 2542: /*
2543: * Parse a single operator, one or two characters long.
2544: * If the operator is recognized, return success and advance the
2545: * parse point, else return failure and let the parse point unchanged.
2546: */
2547: static int
2548: roff_getop(const char *v, int *pos, char *res)
2549: {
2550:
2551: *res = v[*pos];
2552:
2553: switch (*res) {
1.207 schwarze 2554: case '+':
2555: case '-':
2556: case '*':
2557: case '/':
2558: case '%':
2559: case '&':
2560: case ':':
1.204 schwarze 2561: break;
2562: case '<':
2563: switch (v[*pos + 1]) {
1.207 schwarze 2564: case '=':
1.204 schwarze 2565: *res = 'l';
2566: (*pos)++;
2567: break;
1.207 schwarze 2568: case '>':
1.204 schwarze 2569: *res = '!';
2570: (*pos)++;
2571: break;
1.207 schwarze 2572: case '?':
1.204 schwarze 2573: *res = 'i';
2574: (*pos)++;
2575: break;
2576: default:
2577: break;
2578: }
2579: break;
2580: case '>':
2581: switch (v[*pos + 1]) {
1.207 schwarze 2582: case '=':
1.204 schwarze 2583: *res = 'g';
2584: (*pos)++;
2585: break;
1.207 schwarze 2586: case '?':
1.204 schwarze 2587: *res = 'a';
2588: (*pos)++;
2589: break;
2590: default:
2591: break;
2592: }
2593: break;
2594: case '=':
2595: if ('=' == v[*pos + 1])
2596: (*pos)++;
2597: break;
2598: default:
1.277 schwarze 2599: return 0;
1.204 schwarze 2600: }
2601: (*pos)++;
2602:
1.277 schwarze 2603: return *res;
1.204 schwarze 2604: }
2605:
2606: /*
2607: * Evaluate either a parenthesized numeric expression
2608: * or a single signed integer number.
2609: */
2610: static int
1.235 schwarze 2611: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2612: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2613: {
2614:
2615: if ('(' != v[*pos])
1.277 schwarze 2616: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2617:
2618: (*pos)++;
1.261 schwarze 2619: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2620: return 0;
1.204 schwarze 2621:
1.206 schwarze 2622: /*
2623: * Omission of the closing parenthesis
2624: * is an error in validation mode,
2625: * but ignored in evaluation mode.
2626: */
2627:
1.204 schwarze 2628: if (')' == v[*pos])
2629: (*pos)++;
1.206 schwarze 2630: else if (NULL == res)
1.277 schwarze 2631: return 0;
1.204 schwarze 2632:
1.277 schwarze 2633: return 1;
1.204 schwarze 2634: }
2635:
2636: /*
2637: * Evaluate a complete numeric expression.
2638: * Proceed left to right, there is no concept of precedence.
2639: */
2640: static int
1.235 schwarze 2641: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2642: int *pos, int *res, int flags)
1.204 schwarze 2643: {
2644: int mypos, operand2;
2645: char operator;
2646:
2647: if (NULL == pos) {
2648: mypos = 0;
2649: pos = &mypos;
2650: }
2651:
1.261 schwarze 2652: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2653: while (isspace((unsigned char)v[*pos]))
2654: (*pos)++;
2655:
1.261 schwarze 2656: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2657: return 0;
1.204 schwarze 2658:
2659: while (1) {
1.261 schwarze 2660: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2661: while (isspace((unsigned char)v[*pos]))
2662: (*pos)++;
2663:
2664: if ( ! roff_getop(v, pos, &operator))
2665: break;
2666:
1.261 schwarze 2667: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2668: while (isspace((unsigned char)v[*pos]))
2669: (*pos)++;
2670:
1.261 schwarze 2671: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2672: return 0;
1.204 schwarze 2673:
1.261 schwarze 2674: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2675: while (isspace((unsigned char)v[*pos]))
2676: (*pos)++;
1.206 schwarze 2677:
2678: if (NULL == res)
2679: continue;
1.204 schwarze 2680:
2681: switch (operator) {
1.207 schwarze 2682: case '+':
1.204 schwarze 2683: *res += operand2;
2684: break;
1.207 schwarze 2685: case '-':
1.204 schwarze 2686: *res -= operand2;
2687: break;
1.207 schwarze 2688: case '*':
1.204 schwarze 2689: *res *= operand2;
2690: break;
1.207 schwarze 2691: case '/':
1.244 schwarze 2692: if (operand2 == 0) {
1.235 schwarze 2693: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2694: ln, *pos, "%s", v);
1.234 kristaps 2695: *res = 0;
2696: break;
2697: }
1.204 schwarze 2698: *res /= operand2;
2699: break;
1.207 schwarze 2700: case '%':
1.244 schwarze 2701: if (operand2 == 0) {
2702: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2703: ln, *pos, "%s", v);
1.244 schwarze 2704: *res = 0;
2705: break;
2706: }
1.204 schwarze 2707: *res %= operand2;
2708: break;
1.207 schwarze 2709: case '<':
1.204 schwarze 2710: *res = *res < operand2;
2711: break;
1.207 schwarze 2712: case '>':
1.204 schwarze 2713: *res = *res > operand2;
2714: break;
1.207 schwarze 2715: case 'l':
1.204 schwarze 2716: *res = *res <= operand2;
2717: break;
1.207 schwarze 2718: case 'g':
1.204 schwarze 2719: *res = *res >= operand2;
2720: break;
1.207 schwarze 2721: case '=':
1.204 schwarze 2722: *res = *res == operand2;
2723: break;
1.207 schwarze 2724: case '!':
1.204 schwarze 2725: *res = *res != operand2;
2726: break;
1.207 schwarze 2727: case '&':
1.204 schwarze 2728: *res = *res && operand2;
2729: break;
1.207 schwarze 2730: case ':':
1.204 schwarze 2731: *res = *res || operand2;
2732: break;
1.207 schwarze 2733: case 'i':
1.204 schwarze 2734: if (operand2 < *res)
2735: *res = operand2;
2736: break;
1.207 schwarze 2737: case 'a':
1.204 schwarze 2738: if (operand2 > *res)
2739: *res = operand2;
2740: break;
2741: default:
2742: abort();
2743: }
2744: }
1.277 schwarze 2745: return 1;
1.204 schwarze 2746: }
2747:
1.266 schwarze 2748: /* --- register management ------------------------------------------------ */
2749:
1.180 schwarze 2750: void
1.187 schwarze 2751: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2752: {
1.327 schwarze 2753: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2754: }
2755:
2756: static void
2757: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2758: int val, char sign, int step)
1.326 schwarze 2759: {
1.180 schwarze 2760: struct roffreg *reg;
2761:
2762: /* Search for an existing register with the same name. */
2763: reg = r->regtab;
2764:
1.326 schwarze 2765: while (reg != NULL && (reg->key.sz != len ||
2766: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 2767: reg = reg->next;
1.147 kristaps 2768:
1.180 schwarze 2769: if (NULL == reg) {
2770: /* Create a new register. */
2771: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 2772: reg->key.p = mandoc_strndup(name, len);
2773: reg->key.sz = len;
1.187 schwarze 2774: reg->val = 0;
1.327 schwarze 2775: reg->step = 0;
1.180 schwarze 2776: reg->next = r->regtab;
2777: r->regtab = reg;
2778: }
2779:
1.187 schwarze 2780: if ('+' == sign)
2781: reg->val += val;
2782: else if ('-' == sign)
2783: reg->val -= val;
2784: else
2785: reg->val = val;
1.327 schwarze 2786: if (step != INT_MIN)
2787: reg->step = step;
1.147 kristaps 2788: }
2789:
1.192 schwarze 2790: /*
2791: * Handle some predefined read-only number registers.
2792: * For now, return -1 if the requested register is not predefined;
2793: * in case a predefined read-only register having the value -1
2794: * were to turn up, another special value would have to be chosen.
2795: */
2796: static int
1.273 schwarze 2797: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2798: {
2799:
2800: switch (*name) {
1.273 schwarze 2801: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 2802: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 2803: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2804: return 0;
1.207 schwarze 2805: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2806: return 1;
1.207 schwarze 2807: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2808: return 24;
1.207 schwarze 2809: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2810: return 0;
1.207 schwarze 2811: case 'T': /* Some output device is always defined. */
1.277 schwarze 2812: return 1;
1.207 schwarze 2813: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2814: return 40;
1.192 schwarze 2815: default:
1.277 schwarze 2816: return -1;
1.192 schwarze 2817: }
2818: }
2819:
1.181 schwarze 2820: int
1.326 schwarze 2821: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 2822: {
1.327 schwarze 2823: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 2824: }
2825:
2826: static int
1.327 schwarze 2827: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 2828: {
2829: struct roffreg *reg;
1.192 schwarze 2830: int val;
2831:
2832: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2833: val = roff_getregro(r, name + 1);
1.192 schwarze 2834: if (-1 != val)
1.277 schwarze 2835: return val;
1.192 schwarze 2836: }
1.181 schwarze 2837:
1.327 schwarze 2838: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 2839: if (len == reg->key.sz &&
1.327 schwarze 2840: 0 == strncmp(name, reg->key.p, len)) {
2841: switch (sign) {
2842: case '+':
2843: reg->val += reg->step;
2844: break;
2845: case '-':
2846: reg->val -= reg->step;
2847: break;
2848: default:
2849: break;
2850: }
1.277 schwarze 2851: return reg->val;
1.327 schwarze 2852: }
2853: }
1.271 schwarze 2854:
1.327 schwarze 2855: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 2856: return 0;
1.271 schwarze 2857: }
2858:
2859: static int
2860: roff_hasregn(const struct roff *r, const char *name, size_t len)
2861: {
2862: struct roffreg *reg;
2863: int val;
2864:
2865: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2866: val = roff_getregro(r, name + 1);
1.271 schwarze 2867: if (-1 != val)
1.277 schwarze 2868: return 1;
1.271 schwarze 2869: }
2870:
2871: for (reg = r->regtab; reg; reg = reg->next)
2872: if (len == reg->key.sz &&
2873: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2874: return 1;
1.147 kristaps 2875:
1.277 schwarze 2876: return 0;
1.147 kristaps 2877: }
2878:
1.180 schwarze 2879: static void
2880: roff_freereg(struct roffreg *reg)
1.147 kristaps 2881: {
1.180 schwarze 2882: struct roffreg *old_reg;
1.147 kristaps 2883:
1.180 schwarze 2884: while (NULL != reg) {
2885: free(reg->key.p);
2886: old_reg = reg;
2887: reg = reg->next;
2888: free(old_reg);
2889: }
1.147 kristaps 2890: }
1.92 schwarze 2891:
1.340 schwarze 2892: static int
1.89 kristaps 2893: roff_nr(ROFF_ARGS)
1.83 schwarze 2894: {
1.327 schwarze 2895: char *key, *val, *step;
1.212 schwarze 2896: size_t keysz;
1.327 schwarze 2897: int iv, is, len;
1.187 schwarze 2898: char sign;
1.89 kristaps 2899:
1.238 schwarze 2900: key = val = buf->buf + pos;
2901: if (*key == '\0')
1.277 schwarze 2902: return ROFF_IGN;
1.212 schwarze 2903:
2904: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2905: if (key[keysz] == '\\')
1.277 schwarze 2906: return ROFF_IGN;
1.89 kristaps 2907:
1.187 schwarze 2908: sign = *val;
1.238 schwarze 2909: if (sign == '+' || sign == '-')
1.187 schwarze 2910: val++;
2911:
1.327 schwarze 2912: len = 0;
2913: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2914: return ROFF_IGN;
2915:
2916: step = val + len;
2917: while (isspace((unsigned char)*step))
2918: step++;
2919: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2920: is = INT_MIN;
1.109 kristaps 2921:
1.327 schwarze 2922: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 2923: return ROFF_IGN;
1.203 schwarze 2924: }
2925:
1.340 schwarze 2926: static int
1.203 schwarze 2927: roff_rr(ROFF_ARGS)
2928: {
2929: struct roffreg *reg, **prev;
1.212 schwarze 2930: char *name, *cp;
2931: size_t namesz;
1.203 schwarze 2932:
1.238 schwarze 2933: name = cp = buf->buf + pos;
2934: if (*name == '\0')
1.277 schwarze 2935: return ROFF_IGN;
1.212 schwarze 2936: namesz = roff_getname(r, &cp, ln, pos);
2937: name[namesz] = '\0';
1.203 schwarze 2938:
2939: prev = &r->regtab;
2940: while (1) {
2941: reg = *prev;
1.238 schwarze 2942: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2943: break;
2944: prev = ®->next;
2945: }
1.238 schwarze 2946: if (reg != NULL) {
1.203 schwarze 2947: *prev = reg->next;
2948: free(reg->key.p);
2949: free(reg);
2950: }
1.277 schwarze 2951: return ROFF_IGN;
1.122 schwarze 2952: }
2953:
1.266 schwarze 2954: /* --- handler functions for roff requests -------------------------------- */
2955:
1.340 schwarze 2956: static int
1.122 schwarze 2957: roff_rm(ROFF_ARGS)
2958: {
2959: const char *name;
2960: char *cp;
1.212 schwarze 2961: size_t namesz;
1.122 schwarze 2962:
1.238 schwarze 2963: cp = buf->buf + pos;
2964: while (*cp != '\0') {
1.212 schwarze 2965: name = cp;
1.238 schwarze 2966: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2967: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 2968: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 2969: if (name[namesz] == '\\')
1.212 schwarze 2970: break;
1.122 schwarze 2971: }
1.277 schwarze 2972: return ROFF_IGN;
1.178 schwarze 2973: }
2974:
1.340 schwarze 2975: static int
1.178 schwarze 2976: roff_it(ROFF_ARGS)
2977: {
2978: int iv;
2979:
2980: /* Parse the number of lines. */
1.261 schwarze 2981:
2982: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.350 schwarze 2983: mandoc_msg(MANDOCERR_IT_NONUM,
2984: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 2985: return ROFF_IGN;
1.178 schwarze 2986: }
2987:
1.262 schwarze 2988: while (isspace((unsigned char)buf->buf[pos]))
2989: pos++;
2990:
2991: /*
2992: * Arm the input line trap.
2993: * Special-casing "an-trap" is an ugly workaround to cope
2994: * with DocBook stupidly fiddling with man(7) internals.
2995: */
1.261 schwarze 2996:
1.178 schwarze 2997: roffit_lines = iv;
1.262 schwarze 2998: roffit_macro = mandoc_strdup(iv != 1 ||
2999: strcmp(buf->buf + pos, "an-trap") ?
3000: buf->buf + pos : "br");
1.277 schwarze 3001: return ROFF_IGN;
1.175 schwarze 3002: }
3003:
1.340 schwarze 3004: static int
1.175 schwarze 3005: roff_Dd(ROFF_ARGS)
3006: {
1.315 schwarze 3007: int mask;
3008: enum roff_tok t, te;
1.227 schwarze 3009:
1.315 schwarze 3010: switch (tok) {
3011: case ROFF_Dd:
3012: tok = MDOC_Dd;
3013: te = MDOC_MAX;
3014: if (r->format == 0)
3015: r->format = MPARSE_MDOC;
3016: mask = MPARSE_MDOC | MPARSE_QUICK;
3017: break;
3018: case ROFF_TH:
3019: tok = MAN_TH;
3020: te = MAN_MAX;
3021: if (r->format == 0)
3022: r->format = MPARSE_MAN;
3023: mask = MPARSE_QUICK;
3024: break;
3025: default:
3026: abort();
3027: }
3028: if ((r->options & mask) == 0)
3029: for (t = tok; t < te; t++)
3030: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3031: return ROFF_CONT;
1.109 kristaps 3032: }
3033:
1.340 schwarze 3034: static int
1.109 kristaps 3035: roff_TE(ROFF_ARGS)
3036: {
1.321 schwarze 3037: if (r->tbl == NULL) {
1.350 schwarze 3038: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3039: return ROFF_IGN;
3040: }
1.346 schwarze 3041: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3042: r->tbl = NULL;
1.258 schwarze 3043: free(buf->buf);
3044: buf->buf = mandoc_strdup(".sp");
3045: buf->sz = 4;
1.329 schwarze 3046: *offs = 0;
1.277 schwarze 3047: return ROFF_REPARSE;
1.258 schwarze 3048: }
1.321 schwarze 3049: r->tbl = NULL;
1.277 schwarze 3050: return ROFF_IGN;
1.112 kristaps 3051: }
3052:
1.340 schwarze 3053: static int
1.112 kristaps 3054: roff_T_(ROFF_ARGS)
3055: {
3056:
3057: if (NULL == r->tbl)
1.350 schwarze 3058: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3059: else
1.296 schwarze 3060: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3061:
1.277 schwarze 3062: return ROFF_IGN;
1.109 kristaps 3063: }
3064:
1.230 schwarze 3065: /*
3066: * Handle in-line equation delimiters.
3067: */
1.340 schwarze 3068: static int
1.238 schwarze 3069: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3070: {
1.233 schwarze 3071: char *cp1, *cp2;
3072: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3073:
1.230 schwarze 3074: /*
3075: * Outside equations, look for an opening delimiter.
3076: * If we are inside an equation, we already know it is
3077: * in-line, or this function wouldn't have been called;
3078: * so look for a closing delimiter.
3079: */
3080:
1.238 schwarze 3081: cp1 = buf->buf + pos;
1.230 schwarze 3082: cp2 = strchr(cp1, r->eqn == NULL ?
3083: r->last_eqn->odelim : r->last_eqn->cdelim);
3084: if (cp2 == NULL)
1.277 schwarze 3085: return ROFF_CONT;
1.230 schwarze 3086:
1.233 schwarze 3087: *cp2++ = '\0';
3088: bef_pr = bef_nl = aft_nl = aft_pr = "";
3089:
3090: /* Handle preceding text, protecting whitespace. */
3091:
1.238 schwarze 3092: if (*buf->buf != '\0') {
1.233 schwarze 3093: if (r->eqn == NULL)
3094: bef_pr = "\\&";
3095: bef_nl = "\n";
3096: }
3097:
3098: /*
3099: * Prepare replacing the delimiter with an equation macro
3100: * and drop leading white space from the equation.
3101: */
1.230 schwarze 3102:
1.233 schwarze 3103: if (r->eqn == NULL) {
3104: while (*cp2 == ' ')
3105: cp2++;
3106: mac = ".EQ";
3107: } else
3108: mac = ".EN";
3109:
3110: /* Handle following text, protecting whitespace. */
3111:
3112: if (*cp2 != '\0') {
3113: aft_nl = "\n";
3114: if (r->eqn != NULL)
3115: aft_pr = "\\&";
3116: }
3117:
3118: /* Do the actual replacement. */
3119:
1.238 schwarze 3120: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3121: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3122: free(buf->buf);
3123: buf->buf = cp1;
1.230 schwarze 3124:
3125: /* Toggle the in-line state of the eqn subsystem. */
3126:
3127: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3128: return ROFF_REPARSE;
1.151 kristaps 3129: }
3130:
1.340 schwarze 3131: static int
1.235 schwarze 3132: roff_EQ(ROFF_ARGS)
1.125 kristaps 3133: {
1.319 schwarze 3134: struct roff_node *n;
3135:
1.322 schwarze 3136: if (r->man->macroset == MACROSET_MAN)
3137: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3138: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3139: if (ln > r->man->last->line)
3140: n->flags |= NODE_LINE;
1.348 schwarze 3141: n->eqn = eqn_box_new();
1.319 schwarze 3142: roff_node_append(r->man, n);
3143: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3144:
1.238 schwarze 3145: assert(r->eqn == NULL);
1.319 schwarze 3146: if (r->last_eqn == NULL)
1.351 ! schwarze 3147: r->last_eqn = eqn_alloc();
1.319 schwarze 3148: else
3149: eqn_reset(r->last_eqn);
3150: r->eqn = r->last_eqn;
3151: r->eqn->node = n;
1.151 kristaps 3152:
1.238 schwarze 3153: if (buf->buf[pos] != '\0')
1.350 schwarze 3154: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3155: ".EQ %s", buf->buf + pos);
1.151 kristaps 3156:
1.277 schwarze 3157: return ROFF_IGN;
1.125 kristaps 3158: }
3159:
1.340 schwarze 3160: static int
1.125 kristaps 3161: roff_EN(ROFF_ARGS)
3162: {
1.319 schwarze 3163: if (r->eqn != NULL) {
3164: eqn_parse(r->eqn);
3165: r->eqn = NULL;
3166: } else
1.350 schwarze 3167: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3168: if (buf->buf[pos] != '\0')
1.350 schwarze 3169: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3170: "EN %s", buf->buf + pos);
1.277 schwarze 3171: return ROFF_IGN;
1.125 kristaps 3172: }
3173:
1.340 schwarze 3174: static int
1.109 kristaps 3175: roff_TS(ROFF_ARGS)
3176: {
1.321 schwarze 3177: if (r->tbl != NULL) {
1.350 schwarze 3178: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3179: tbl_end(r->tbl, 0);
1.115 kristaps 3180: }
1.351 ! schwarze 3181: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.346 schwarze 3182: if (r->last_tbl == NULL)
1.321 schwarze 3183: r->first_tbl = r->tbl;
3184: r->last_tbl = r->tbl;
1.297 schwarze 3185: return ROFF_IGN;
3186: }
3187:
1.340 schwarze 3188: static int
1.297 schwarze 3189: roff_onearg(ROFF_ARGS)
3190: {
3191: struct roff_node *n;
3192: char *cp;
1.305 schwarze 3193: int npos;
1.297 schwarze 3194:
1.302 schwarze 3195: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3196: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3197: tok == ROFF_ti))
1.302 schwarze 3198: man_breakscope(r->man, tok);
3199:
1.309 schwarze 3200: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3201: r->man->last = roffce_node;
3202: r->man->next = ROFF_NEXT_SIBLING;
3203: }
3204:
1.297 schwarze 3205: roff_elem_alloc(r->man, ln, ppos, tok);
3206: n = r->man->last;
3207:
3208: cp = buf->buf + pos;
3209: if (*cp != '\0') {
3210: while (*cp != '\0' && *cp != ' ')
3211: cp++;
3212: while (*cp == ' ')
3213: *cp++ = '\0';
3214: if (*cp != '\0')
1.350 schwarze 3215: mandoc_msg(MANDOCERR_ARG_EXCESS,
3216: ln, (int)(cp - buf->buf),
1.297 schwarze 3217: "%s ... %s", roff_name[tok], cp);
3218: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3219: }
3220:
1.309 schwarze 3221: if (tok == ROFF_ce || tok == ROFF_rj) {
3222: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3223: roff_word_alloc(r->man, ln, pos, "1");
3224: r->man->last->flags |= NODE_NOSRC;
3225: }
3226: npos = 0;
3227: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3228: &roffce_lines, 0) == 0) {
1.350 schwarze 3229: mandoc_msg(MANDOCERR_CE_NONUM,
3230: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3231: roffce_lines = 1;
3232: }
3233: if (roffce_lines < 1) {
3234: r->man->last = r->man->last->parent;
3235: roffce_node = NULL;
3236: roffce_lines = 0;
3237: } else
3238: roffce_node = r->man->last->parent;
3239: } else {
3240: n->flags |= NODE_VALID | NODE_ENDED;
3241: r->man->last = n;
3242: }
3243: n->flags |= NODE_LINE;
1.300 schwarze 3244: r->man->next = ROFF_NEXT_SIBLING;
3245: return ROFF_IGN;
3246: }
3247:
1.340 schwarze 3248: static int
1.300 schwarze 3249: roff_manyarg(ROFF_ARGS)
3250: {
3251: struct roff_node *n;
3252: char *sp, *ep;
3253:
3254: roff_elem_alloc(r->man, ln, ppos, tok);
3255: n = r->man->last;
3256:
3257: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3258: while (*ep != '\0' && *ep != ' ')
3259: ep++;
3260: while (*ep == ' ')
3261: *ep++ = '\0';
3262: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3263: }
3264:
3265: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3266: r->man->last = n;
3267: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3268: return ROFF_IGN;
1.251 schwarze 3269: }
3270:
1.340 schwarze 3271: static int
1.311 schwarze 3272: roff_als(ROFF_ARGS)
3273: {
3274: char *oldn, *newn, *end, *value;
3275: size_t oldsz, newsz, valsz;
3276:
3277: newn = oldn = buf->buf + pos;
3278: if (*newn == '\0')
3279: return ROFF_IGN;
3280:
3281: newsz = roff_getname(r, &oldn, ln, pos);
3282: if (newn[newsz] == '\\' || *oldn == '\0')
3283: return ROFF_IGN;
3284:
3285: end = oldn;
3286: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3287: if (oldsz == 0)
3288: return ROFF_IGN;
3289:
1.338 schwarze 3290: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3291: (int)oldsz, oldn);
1.311 schwarze 3292: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3293: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3294: free(value);
3295: return ROFF_IGN;
3296: }
3297:
1.340 schwarze 3298: static int
1.296 schwarze 3299: roff_br(ROFF_ARGS)
1.251 schwarze 3300: {
1.302 schwarze 3301: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3302: man_breakscope(r->man, ROFF_br);
1.296 schwarze 3303: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3304: if (buf->buf[pos] != '\0')
1.350 schwarze 3305: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.296 schwarze 3306: "%s %s", roff_name[tok], buf->buf + pos);
3307: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3308: r->man->next = ROFF_NEXT_SIBLING;
3309: return ROFF_IGN;
1.92 schwarze 3310: }
3311:
1.340 schwarze 3312: static int
1.174 kristaps 3313: roff_cc(ROFF_ARGS)
3314: {
3315: const char *p;
3316:
1.238 schwarze 3317: p = buf->buf + pos;
1.174 kristaps 3318:
1.238 schwarze 3319: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3320: r->control = '\0';
1.174 kristaps 3321:
1.238 schwarze 3322: if (*p != '\0')
1.350 schwarze 3323: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3324: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3325:
1.341 schwarze 3326: return ROFF_IGN;
3327: }
3328:
3329: static int
3330: roff_char(ROFF_ARGS)
3331: {
3332: const char *p, *kp, *vp;
3333: size_t ksz, vsz;
3334: int font;
3335:
3336: /* Parse the character to be replaced. */
3337:
3338: kp = buf->buf + pos;
3339: p = kp + 1;
3340: if (*kp == '\0' || (*kp == '\\' &&
3341: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3342: (*p != ' ' && *p != '\0')) {
1.350 schwarze 3343: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3344: return ROFF_IGN;
3345: }
3346: ksz = p - kp;
3347: while (*p == ' ')
3348: p++;
3349:
3350: /*
3351: * If the replacement string contains a font escape sequence,
3352: * we have to restore the font at the end.
3353: */
3354:
3355: vp = p;
3356: vsz = strlen(p);
3357: font = 0;
3358: while (*p != '\0') {
3359: if (*p++ != '\\')
3360: continue;
3361: switch (mandoc_escape(&p, NULL, NULL)) {
3362: case ESCAPE_FONT:
3363: case ESCAPE_FONTROMAN:
3364: case ESCAPE_FONTITALIC:
3365: case ESCAPE_FONTBOLD:
3366: case ESCAPE_FONTBI:
1.342 schwarze 3367: case ESCAPE_FONTCW:
1.341 schwarze 3368: case ESCAPE_FONTPREV:
3369: font++;
3370: break;
3371: default:
3372: break;
3373: }
3374: }
3375: if (font > 1)
1.350 schwarze 3376: mandoc_msg(MANDOCERR_CHAR_FONT,
3377: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3378:
3379: /*
3380: * Approximate the effect of .char using the .tr tables.
3381: * XXX In groff, .char and .tr interact differently.
3382: */
3383:
3384: if (ksz == 1) {
3385: if (r->xtab == NULL)
3386: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3387: assert((unsigned int)*kp < 128);
3388: free(r->xtab[(int)*kp].p);
3389: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3390: "%s%s", vp, font ? "\fP" : "");
3391: } else {
3392: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3393: if (font)
3394: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3395: }
1.277 schwarze 3396: return ROFF_IGN;
1.174 kristaps 3397: }
3398:
1.340 schwarze 3399: static int
1.303 schwarze 3400: roff_ec(ROFF_ARGS)
3401: {
3402: const char *p;
3403:
3404: p = buf->buf + pos;
3405: if (*p == '\0')
3406: r->escape = '\\';
3407: else {
3408: r->escape = *p;
3409: if (*++p != '\0')
1.350 schwarze 3410: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3411: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3412: }
3413: return ROFF_IGN;
3414: }
3415:
1.340 schwarze 3416: static int
1.303 schwarze 3417: roff_eo(ROFF_ARGS)
3418: {
3419: r->escape = '\0';
3420: if (buf->buf[pos] != '\0')
1.350 schwarze 3421: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3422: ln, pos, "eo %s", buf->buf + pos);
3423: return ROFF_IGN;
1.330 schwarze 3424: }
3425:
1.340 schwarze 3426: static int
1.330 schwarze 3427: roff_nop(ROFF_ARGS)
3428: {
3429: while (buf->buf[pos] == ' ')
3430: pos++;
3431: *offs = pos;
3432: return ROFF_RERUN;
1.303 schwarze 3433: }
3434:
1.340 schwarze 3435: static int
1.164 kristaps 3436: roff_tr(ROFF_ARGS)
3437: {
3438: const char *p, *first, *second;
3439: size_t fsz, ssz;
3440: enum mandoc_esc esc;
3441:
1.238 schwarze 3442: p = buf->buf + pos;
1.164 kristaps 3443:
1.238 schwarze 3444: if (*p == '\0') {
1.350 schwarze 3445: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3446: return ROFF_IGN;
1.164 kristaps 3447: }
3448:
1.238 schwarze 3449: while (*p != '\0') {
1.164 kristaps 3450: fsz = ssz = 1;
3451:
3452: first = p++;
1.238 schwarze 3453: if (*first == '\\') {
1.164 kristaps 3454: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3455: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3456: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3457: (int)(p - buf->buf), "%s", first);
1.277 schwarze 3458: return ROFF_IGN;
1.164 kristaps 3459: }
3460: fsz = (size_t)(p - first);
3461: }
3462:
3463: second = p++;
1.238 schwarze 3464: if (*second == '\\') {
1.164 kristaps 3465: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3466: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3467: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3468: (int)(p - buf->buf), "%s", second);
1.277 schwarze 3469: return ROFF_IGN;
1.164 kristaps 3470: }
3471: ssz = (size_t)(p - second);
1.238 schwarze 3472: } else if (*second == '\0') {
1.350 schwarze 3473: mandoc_msg(MANDOCERR_TR_ODD, ln,
3474: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3475: second = " ";
1.165 kristaps 3476: p--;
1.164 kristaps 3477: }
3478:
1.167 kristaps 3479: if (fsz > 1) {
1.207 schwarze 3480: roff_setstrn(&r->xmbtab, first, fsz,
3481: second, ssz, 0);
1.167 kristaps 3482: continue;
3483: }
3484:
1.238 schwarze 3485: if (r->xtab == NULL)
1.207 schwarze 3486: r->xtab = mandoc_calloc(128,
3487: sizeof(struct roffstr));
1.167 kristaps 3488:
3489: free(r->xtab[(int)*first].p);
3490: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3491: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3492: }
3493:
1.277 schwarze 3494: return ROFF_IGN;
1.164 kristaps 3495: }
3496:
1.339 schwarze 3497: /*
3498: * Implementation of the .return request.
3499: * There is no need to call roff_userret() from here.
3500: * The read module will call that after rewinding the reader stack
3501: * to the place from where the current macro was called.
3502: */
1.340 schwarze 3503: static int
1.339 schwarze 3504: roff_return(ROFF_ARGS)
3505: {
3506: if (r->mstackpos >= 0)
1.340 schwarze 3507: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3508:
1.350 schwarze 3509: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3510: return ROFF_IGN;
3511: }
3512:
1.340 schwarze 3513: static int
1.306 schwarze 3514: roff_rn(ROFF_ARGS)
3515: {
3516: const char *value;
3517: char *oldn, *newn, *end;
3518: size_t oldsz, newsz;
1.315 schwarze 3519: int deftype;
1.306 schwarze 3520:
3521: oldn = newn = buf->buf + pos;
3522: if (*oldn == '\0')
3523: return ROFF_IGN;
3524:
3525: oldsz = roff_getname(r, &newn, ln, pos);
3526: if (oldn[oldsz] == '\\' || *newn == '\0')
3527: return ROFF_IGN;
3528:
3529: end = newn;
3530: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3531: if (newsz == 0)
3532: return ROFF_IGN;
3533:
1.315 schwarze 3534: deftype = ROFFDEF_ANY;
3535: value = roff_getstrn(r, oldn, oldsz, &deftype);
3536: switch (deftype) {
3537: case ROFFDEF_USER:
1.306 schwarze 3538: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3539: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3540: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3541: break;
3542: case ROFFDEF_PRE:
3543: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3544: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3545: break;
3546: case ROFFDEF_REN:
1.306 schwarze 3547: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3548: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3549: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3550: break;
3551: case ROFFDEF_STD:
1.306 schwarze 3552: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3553: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3554: break;
3555: default:
3556: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3557: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3558: break;
3559: }
1.306 schwarze 3560: return ROFF_IGN;
3561: }
3562:
1.340 schwarze 3563: static int
1.339 schwarze 3564: roff_shift(ROFF_ARGS)
3565: {
3566: struct mctx *ctx;
3567: int levels, i;
3568:
3569: levels = 1;
3570: if (buf->buf[pos] != '\0' &&
3571: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 schwarze 3572: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3573: ln, pos, "shift %s", buf->buf + pos);
3574: levels = 1;
3575: }
3576: if (r->mstackpos < 0) {
1.350 schwarze 3577: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3578: return ROFF_IGN;
3579: }
3580: ctx = r->mstack + r->mstackpos;
3581: if (levels > ctx->argc) {
1.350 schwarze 3582: mandoc_msg(MANDOCERR_SHIFT,
1.339 schwarze 3583: ln, pos, "%d, but max is %d", levels, ctx->argc);
3584: levels = ctx->argc;
3585: }
3586: if (levels == 0)
3587: return ROFF_IGN;
3588: for (i = 0; i < levels; i++)
3589: free(ctx->argv[i]);
3590: ctx->argc -= levels;
3591: for (i = 0; i < ctx->argc; i++)
3592: ctx->argv[i] = ctx->argv[i + levels];
3593: return ROFF_IGN;
3594: }
3595:
1.340 schwarze 3596: static int
1.105 kristaps 3597: roff_so(ROFF_ARGS)
3598: {
1.249 schwarze 3599: char *name, *cp;
1.105 kristaps 3600:
1.238 schwarze 3601: name = buf->buf + pos;
1.350 schwarze 3602: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3603:
3604: /*
3605: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3606: * opening anything that's not in our cwd or anything beneath
3607: * it. Thus, explicitly disallow traversing up the file-system
3608: * or using absolute paths.
3609: */
3610:
1.238 schwarze 3611: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 schwarze 3612: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3613: buf->sz = mandoc_asprintf(&cp,
3614: ".sp\nSee the file %s.\n.sp", name) + 1;
3615: free(buf->buf);
3616: buf->buf = cp;
3617: *offs = 0;
1.277 schwarze 3618: return ROFF_REPARSE;
1.105 kristaps 3619: }
3620:
3621: *offs = pos;
1.277 schwarze 3622: return ROFF_SO;
1.105 kristaps 3623: }
1.92 schwarze 3624:
1.266 schwarze 3625: /* --- user defined strings and macros ------------------------------------ */
3626:
1.340 schwarze 3627: static int
1.106 kristaps 3628: roff_userdef(ROFF_ARGS)
1.99 kristaps 3629: {
1.339 schwarze 3630: struct mctx *ctx;
3631: char *arg, *ap, *dst, *src;
3632: size_t sz;
3633:
3634: /* Initialize a new macro stack context. */
3635:
3636: if (++r->mstackpos == r->mstacksz) {
3637: r->mstack = mandoc_recallocarray(r->mstack,
3638: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3639: r->mstacksz += 8;
3640: }
3641: ctx = r->mstack + r->mstackpos;
3642: ctx->argsz = 0;
3643: ctx->argc = 0;
3644: ctx->argv = NULL;
3645:
3646: /*
3647: * Collect pointers to macro argument strings,
3648: * NUL-terminating them and escaping quotes.
3649: */
3650:
3651: src = buf->buf + pos;
3652: while (*src != '\0') {
3653: if (ctx->argc == ctx->argsz) {
3654: ctx->argsz += 8;
3655: ctx->argv = mandoc_reallocarray(ctx->argv,
3656: ctx->argsz, sizeof(*ctx->argv));
3657: }
1.351 ! schwarze 3658: arg = mandoc_getarg(&src, ln, &pos);
1.339 schwarze 3659: sz = 1; /* For the terminating NUL. */
3660: for (ap = arg; *ap != '\0'; ap++)
3661: sz += *ap == '"' ? 4 : 1;
3662: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3663: for (ap = arg; *ap != '\0'; ap++) {
3664: if (*ap == '"') {
3665: memcpy(dst, "\\(dq", 4);
3666: dst += 4;
3667: } else
3668: *dst++ = *ap;
1.106 kristaps 3669: }
1.339 schwarze 3670: *dst = '\0';
1.337 schwarze 3671: }
3672:
1.339 schwarze 3673: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3674:
1.238 schwarze 3675: free(buf->buf);
1.339 schwarze 3676: buf->buf = mandoc_strdup(r->current_string);
3677: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3678: *offs = 0;
1.106 kristaps 3679:
1.277 schwarze 3680: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3681: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3682: }
1.121 schwarze 3683:
1.306 schwarze 3684: /*
3685: * Calling a high-level macro that was renamed with .rn.
3686: * r->current_string has already been set up by roff_parse().
3687: */
1.340 schwarze 3688: static int
1.306 schwarze 3689: roff_renamed(ROFF_ARGS)
3690: {
3691: char *nbuf;
3692:
1.315 schwarze 3693: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3694: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3695: free(buf->buf);
3696: buf->buf = nbuf;
1.329 schwarze 3697: *offs = 0;
1.306 schwarze 3698: return ROFF_CONT;
3699: }
3700:
1.212 schwarze 3701: static size_t
1.121 schwarze 3702: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3703: {
3704: char *name, *cp;
1.212 schwarze 3705: size_t namesz;
1.121 schwarze 3706:
3707: name = *cpp;
3708: if ('\0' == *name)
1.277 schwarze 3709: return 0;
1.121 schwarze 3710:
1.212 schwarze 3711: /* Read until end of name and terminate it with NUL. */
3712: for (cp = name; 1; cp++) {
3713: if ('\0' == *cp || ' ' == *cp) {
3714: namesz = cp - name;
3715: break;
3716: }
1.121 schwarze 3717: if ('\\' != *cp)
3718: continue;
1.215 schwarze 3719: namesz = cp - name;
3720: if ('{' == cp[1] || '}' == cp[1])
3721: break;
1.121 schwarze 3722: cp++;
3723: if ('\\' == *cp)
3724: continue;
1.350 schwarze 3725: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.224 schwarze 3726: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3727: mandoc_escape((const char **)&cp, NULL, NULL);
3728: break;
1.121 schwarze 3729: }
3730:
3731: /* Read past spaces. */
3732: while (' ' == *cp)
3733: cp++;
3734:
3735: *cpp = cp;
1.277 schwarze 3736: return namesz;
1.121 schwarze 3737: }
3738:
1.106 kristaps 3739: /*
3740: * Store *string into the user-defined string called *name.
3741: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3742: * append == 0: replace mode
3743: * append == 1: single-line append mode
3744: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3745: */
1.94 kristaps 3746: static void
1.106 kristaps 3747: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3748: int append)
1.92 schwarze 3749: {
1.315 schwarze 3750: size_t namesz;
1.164 kristaps 3751:
1.315 schwarze 3752: namesz = strlen(name);
3753: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 3754: string ? strlen(string) : 0, append);
1.315 schwarze 3755: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 3756: }
3757:
3758: static void
1.166 kristaps 3759: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3760: const char *string, size_t stringsz, int append)
1.164 kristaps 3761: {
1.166 kristaps 3762: struct roffkv *n;
1.164 kristaps 3763: char *c;
3764: int i;
3765: size_t oldch, newch;
1.92 schwarze 3766:
1.106 kristaps 3767: /* Search for an existing string with the same name. */
1.164 kristaps 3768: n = *r;
3769:
1.211 schwarze 3770: while (n && (namesz != n->key.sz ||
3771: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3772: n = n->next;
1.94 kristaps 3773:
3774: if (NULL == n) {
1.106 kristaps 3775: /* Create a new string table entry. */
1.166 kristaps 3776: n = mandoc_malloc(sizeof(struct roffkv));
3777: n->key.p = mandoc_strndup(name, namesz);
3778: n->key.sz = namesz;
3779: n->val.p = NULL;
3780: n->val.sz = 0;
1.164 kristaps 3781: n->next = *r;
3782: *r = n;
1.193 schwarze 3783: } else if (0 == append) {
1.166 kristaps 3784: free(n->val.p);
3785: n->val.p = NULL;
3786: n->val.sz = 0;
1.106 kristaps 3787: }
3788:
3789: if (NULL == string)
3790: return;
3791:
3792: /*
3793: * One additional byte for the '\n' in multiline mode,
3794: * and one for the terminating '\0'.
3795: */
1.193 schwarze 3796: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3797:
1.166 kristaps 3798: if (NULL == n->val.p) {
3799: n->val.p = mandoc_malloc(newch);
3800: *n->val.p = '\0';
1.106 kristaps 3801: oldch = 0;
3802: } else {
1.166 kristaps 3803: oldch = n->val.sz;
3804: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3805: }
3806:
3807: /* Skip existing content in the destination buffer. */
1.166 kristaps 3808: c = n->val.p + (int)oldch;
1.106 kristaps 3809:
3810: /* Append new content to the destination buffer. */
1.164 kristaps 3811: i = 0;
3812: while (i < (int)stringsz) {
1.106 kristaps 3813: /*
3814: * Rudimentary roff copy mode:
3815: * Handle escaped backslashes.
3816: */
1.164 kristaps 3817: if ('\\' == string[i] && '\\' == string[i + 1])
3818: i++;
3819: *c++ = string[i++];
1.106 kristaps 3820: }
1.94 kristaps 3821:
1.106 kristaps 3822: /* Append terminating bytes. */
1.193 schwarze 3823: if (1 < append)
1.106 kristaps 3824: *c++ = '\n';
1.163 kristaps 3825:
1.106 kristaps 3826: *c = '\0';
1.166 kristaps 3827: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3828: }
3829:
1.94 kristaps 3830: static const char *
1.325 schwarze 3831: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 3832: int *deftype)
1.92 schwarze 3833: {
1.315 schwarze 3834: const struct roffkv *n;
1.325 schwarze 3835: int found, i;
1.315 schwarze 3836: enum roff_tok tok;
3837:
1.325 schwarze 3838: found = 0;
3839: for (n = r->strtab; n != NULL; n = n->next) {
3840: if (strncmp(name, n->key.p, len) != 0 ||
3841: n->key.p[len] != '\0' || n->val.p == NULL)
3842: continue;
3843: if (*deftype & ROFFDEF_USER) {
3844: *deftype = ROFFDEF_USER;
3845: return n->val.p;
3846: } else {
3847: found = 1;
3848: break;
3849: }
3850: }
3851: for (n = r->rentab; n != NULL; n = n->next) {
3852: if (strncmp(name, n->key.p, len) != 0 ||
3853: n->key.p[len] != '\0' || n->val.p == NULL)
3854: continue;
3855: if (*deftype & ROFFDEF_REN) {
3856: *deftype = ROFFDEF_REN;
3857: return n->val.p;
3858: } else {
3859: found = 1;
3860: break;
1.315 schwarze 3861: }
3862: }
1.325 schwarze 3863: for (i = 0; i < PREDEFS_MAX; i++) {
3864: if (strncmp(name, predefs[i].name, len) != 0 ||
3865: predefs[i].name[len] != '\0')
3866: continue;
3867: if (*deftype & ROFFDEF_PRE) {
3868: *deftype = ROFFDEF_PRE;
3869: return predefs[i].str;
3870: } else {
3871: found = 1;
3872: break;
1.315 schwarze 3873: }
3874: }
1.325 schwarze 3875: if (r->man->macroset != MACROSET_MAN) {
3876: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3877: if (strncmp(name, roff_name[tok], len) != 0 ||
3878: roff_name[tok][len] != '\0')
3879: continue;
3880: if (*deftype & ROFFDEF_STD) {
3881: *deftype = ROFFDEF_STD;
3882: return NULL;
3883: } else {
3884: found = 1;
3885: break;
1.315 schwarze 3886: }
3887: }
3888: }
1.325 schwarze 3889: if (r->man->macroset != MACROSET_MDOC) {
3890: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3891: if (strncmp(name, roff_name[tok], len) != 0 ||
3892: roff_name[tok][len] != '\0')
3893: continue;
3894: if (*deftype & ROFFDEF_STD) {
3895: *deftype = ROFFDEF_STD;
3896: return NULL;
3897: } else {
3898: found = 1;
3899: break;
1.315 schwarze 3900: }
3901: }
1.325 schwarze 3902: }
3903:
3904: if (found == 0 && *deftype != ROFFDEF_ANY) {
3905: if (*deftype & ROFFDEF_REN) {
3906: /*
3907: * This might still be a request,
3908: * so do not treat it as undefined yet.
3909: */
3910: *deftype = ROFFDEF_UNDEF;
3911: return NULL;
1.315 schwarze 3912: }
1.325 schwarze 3913:
3914: /* Using an undefined string defines it to be empty. */
3915:
3916: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3917: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 3918: }
1.325 schwarze 3919:
1.315 schwarze 3920: *deftype = 0;
1.277 schwarze 3921: return NULL;
1.92 schwarze 3922: }
3923:
1.94 kristaps 3924: static void
1.167 kristaps 3925: roff_freestr(struct roffkv *r)
1.92 schwarze 3926: {
1.166 kristaps 3927: struct roffkv *n, *nn;
1.92 schwarze 3928:
1.167 kristaps 3929: for (n = r; n; n = nn) {
1.166 kristaps 3930: free(n->key.p);
3931: free(n->val.p);
1.92 schwarze 3932: nn = n->next;
3933: free(n);
3934: }
1.114 kristaps 3935: }
1.266 schwarze 3936:
3937: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 3938:
3939: /*
3940: * Duplicate an input string, making the appropriate character
3941: * conversations (as stipulated by `tr') along the way.
3942: * Returns a heap-allocated string with all the replacements made.
3943: */
3944: char *
3945: roff_strdup(const struct roff *r, const char *p)
3946: {
1.166 kristaps 3947: const struct roffkv *cp;
1.164 kristaps 3948: char *res;
3949: const char *pp;
3950: size_t ssz, sz;
3951: enum mandoc_esc esc;
3952:
1.167 kristaps 3953: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3954: return mandoc_strdup(p);
1.164 kristaps 3955: else if ('\0' == *p)
1.277 schwarze 3956: return mandoc_strdup("");
1.164 kristaps 3957:
3958: /*
3959: * Step through each character looking for term matches
3960: * (remember that a `tr' can be invoked with an escape, which is
3961: * a glyph but the escape is multi-character).
3962: * We only do this if the character hash has been initialised
3963: * and the string is >0 length.
3964: */
3965:
3966: res = NULL;
3967: ssz = 0;
3968:
3969: while ('\0' != *p) {
1.289 schwarze 3970: assert((unsigned int)*p < 128);
3971: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3972: sz = r->xtab[(int)*p].sz;
3973: res = mandoc_realloc(res, ssz + sz + 1);
3974: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3975: ssz += sz;
3976: p++;
3977: continue;
3978: } else if ('\\' != *p) {
3979: res = mandoc_realloc(res, ssz + 2);
3980: res[ssz++] = *p++;
3981: continue;
3982: }
3983:
1.164 kristaps 3984: /* Search for term matches. */
1.167 kristaps 3985: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3986: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3987: break;
3988:
3989: if (NULL != cp) {
3990: /*
3991: * A match has been found.
3992: * Append the match to the array and move
3993: * forward by its keysize.
3994: */
1.207 schwarze 3995: res = mandoc_realloc(res,
3996: ssz + cp->val.sz + 1);
1.166 kristaps 3997: memcpy(res + ssz, cp->val.p, cp->val.sz);
3998: ssz += cp->val.sz;
3999: p += (int)cp->key.sz;
1.164 kristaps 4000: continue;
4001: }
4002:
1.167 kristaps 4003: /*
4004: * Handle escapes carefully: we need to copy
4005: * over just the escape itself, or else we might
4006: * do replacements within the escape itself.
4007: * Make sure to pass along the bogus string.
4008: */
4009: pp = p++;
4010: esc = mandoc_escape(&p, NULL, NULL);
4011: if (ESCAPE_ERROR == esc) {
4012: sz = strlen(pp);
1.164 kristaps 4013: res = mandoc_realloc(res, ssz + sz + 1);
4014: memcpy(res + ssz, pp, sz);
1.167 kristaps 4015: break;
1.164 kristaps 4016: }
1.207 schwarze 4017: /*
4018: * We bail out on bad escapes.
1.167 kristaps 4019: * No need to warn: we already did so when
4020: * roff_res() was called.
4021: */
4022: sz = (int)(p - pp);
4023: res = mandoc_realloc(res, ssz + sz + 1);
4024: memcpy(res + ssz, pp, sz);
4025: ssz += sz;
1.164 kristaps 4026: }
4027:
4028: res[(int)ssz] = '\0';
1.277 schwarze 4029: return res;
1.227 schwarze 4030: }
4031:
4032: int
4033: roff_getformat(const struct roff *r)
4034: {
4035:
1.277 schwarze 4036: return r->format;
1.174 kristaps 4037: }
4038:
4039: /*
1.207 schwarze 4040: * Find out whether a line is a macro line or not.
1.174 kristaps 4041: * If it is, adjust the current position and return one; if it isn't,
4042: * return zero and don't change the current position.
4043: * If the control character has been set with `.cc', then let that grain
4044: * precedence.
4045: * This is slighly contrary to groff, where using the non-breaking
4046: * control character when `cc' has been invoked will cause the
4047: * non-breaking macro contents to be printed verbatim.
4048: */
4049: int
4050: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4051: {
4052: int pos;
4053:
4054: pos = *ppos;
4055:
1.303 schwarze 4056: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4057: pos++;
1.303 schwarze 4058: else if (r->control != '\0')
1.277 schwarze 4059: return 0;
1.174 kristaps 4060: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4061: pos += 2;
4062: else if ('.' == cp[pos] || '\'' == cp[pos])
4063: pos++;
4064: else
1.277 schwarze 4065: return 0;
1.174 kristaps 4066:
4067: while (' ' == cp[pos] || '\t' == cp[pos])
4068: pos++;
4069:
4070: *ppos = pos;
1.277 schwarze 4071: return 1;
1.74 kristaps 4072: }
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