Annotation of mandoc/roff.c, Revision 1.345
1.345 ! schwarze 1: /* $Id: roff.c,v 1.344 2018/12/04 02:53:51 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"
1.345 ! schwarze 35: #include "tbl.h"
1.226 schwarze 36: #include "libmandoc.h"
1.266 schwarze 37: #include "roff_int.h"
1.109 kristaps 38: #include "libroff.h"
1.82 kristaps 39:
1.170 schwarze 40: /* Maximum number of string expansions per line, to break infinite loops. */
41: #define EXPAND_LIMIT 1000
42:
1.315 schwarze 43: /* Types of definitions of macros and strings. */
44: #define ROFFDEF_USER (1 << 1) /* User-defined. */
45: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
46: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
47: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
48: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
49: ROFFDEF_REN | ROFFDEF_STD)
1.325 schwarze 50: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 51:
1.266 schwarze 52: /* --- data types --------------------------------------------------------- */
53:
1.147 kristaps 54: /*
1.167 kristaps 55: * An incredibly-simple string buffer.
56: */
1.94 kristaps 57: struct roffstr {
1.167 kristaps 58: char *p; /* nil-terminated buffer */
59: size_t sz; /* saved strlen(p) */
1.166 kristaps 60: };
61:
62: /*
1.167 kristaps 63: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 64: */
65: struct roffkv {
66: struct roffstr key;
67: struct roffstr val;
68: struct roffkv *next; /* next in list */
1.94 kristaps 69: };
70:
1.180 schwarze 71: /*
72: * A single number register as part of a singly-linked list.
73: */
74: struct roffreg {
75: struct roffstr key;
1.181 schwarze 76: int val;
1.327 schwarze 77: int step;
1.180 schwarze 78: struct roffreg *next;
79: };
80:
1.295 schwarze 81: /*
82: * Association of request and macro names with token IDs.
83: */
84: struct roffreq {
85: enum roff_tok tok;
86: char name[];
87: };
88:
1.339 schwarze 89: /*
90: * A macro processing context.
91: * More than one is needed when macro calls are nested.
92: */
93: struct mctx {
94: char **argv;
95: int argc;
96: int argsz;
97: };
98:
1.67 kristaps 99: struct roff {
1.128 kristaps 100: struct mparse *parse; /* parse point */
1.296 schwarze 101: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 102: struct roffnode *last; /* leaf of stack */
1.339 schwarze 103: struct mctx *mstack; /* stack of macro contexts */
1.223 schwarze 104: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 105: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 106: struct roffreg *regtab; /* number registers */
1.166 kristaps 107: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 108: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 109: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
110: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 111: const char *current_string; /* value of last called user macro */
1.118 kristaps 112: struct tbl_node *first_tbl; /* first table parsed */
113: struct tbl_node *last_tbl; /* last table parsed */
114: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 115: struct eqn_node *last_eqn; /* equation parser */
116: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 117: int eqn_inline; /* current equation is inline */
1.223 schwarze 118: int options; /* parse options */
1.339 schwarze 119: int mstacksz; /* current size of mstack */
120: int mstackpos; /* position in mstack */
1.223 schwarze 121: int rstacksz; /* current size limit of rstack */
122: int rstackpos; /* position in rstack */
1.227 schwarze 123: int format; /* current file in mdoc or man format */
1.223 schwarze 124: char control; /* control character */
1.303 schwarze 125: char escape; /* escape character */
1.79 kristaps 126: };
127:
1.67 kristaps 128: struct roffnode {
1.294 schwarze 129: enum roff_tok tok; /* type of node */
1.67 kristaps 130: struct roffnode *parent; /* up one in stack */
131: int line; /* parse line */
132: int col; /* parse col */
1.106 kristaps 133: char *name; /* node name, e.g. macro name */
1.79 kristaps 134: char *end; /* end-rules: custom token */
135: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 136: int rule; /* current evaluation rule */
1.67 kristaps 137: };
138:
139: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 140: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 141: struct buf *buf, /* input buffer */ \
1.67 kristaps 142: int ln, /* parse line */ \
1.75 kristaps 143: int ppos, /* original pos in buffer */ \
144: int pos, /* current pos in buffer */ \
1.74 kristaps 145: int *offs /* reset offset of buffer data */
1.67 kristaps 146:
1.340 schwarze 147: typedef int (*roffproc)(ROFF_ARGS);
1.67 kristaps 148:
149: struct roffmac {
1.79 kristaps 150: roffproc proc; /* process new macro */
151: roffproc text; /* process as child text of macro */
152: roffproc sub; /* process as child of macro */
153: int flags;
154: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 155: };
156:
1.141 kristaps 157: struct predef {
158: const char *name; /* predefined input name */
159: const char *str; /* replacement symbol */
160: };
161:
162: #define PREDEF(__name, __str) \
163: { (__name), (__str) },
164:
1.266 schwarze 165: /* --- function prototypes ------------------------------------------------ */
166:
1.340 schwarze 167: static int roffnode_cleanscope(struct roff *);
168: static int roffnode_pop(struct roff *);
1.294 schwarze 169: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 170: const char *, int, int);
1.321 schwarze 171: static void roff_addtbl(struct roff_man *, 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: {
1.176 schwarze 721: struct tbl_node *tbl;
1.167 kristaps 722: int i;
1.67 kristaps 723:
1.176 schwarze 724: while (NULL != (tbl = r->first_tbl)) {
725: r->first_tbl = tbl->next;
726: tbl_free(tbl);
1.109 kristaps 727: }
1.113 kristaps 728: r->first_tbl = r->last_tbl = r->tbl = NULL;
729:
1.319 schwarze 730: if (r->last_eqn != NULL)
731: eqn_free(r->last_eqn);
732: r->last_eqn = r->eqn = NULL;
1.125 kristaps 733:
1.339 schwarze 734: while (r->mstackpos >= 0)
735: roff_userret(r);
736:
1.67 kristaps 737: while (r->last)
738: roffnode_pop(r);
1.109 kristaps 739:
1.223 schwarze 740: free (r->rstack);
741: r->rstack = NULL;
742: r->rstacksz = 0;
743: r->rstackpos = -1;
744:
745: roff_freereg(r->regtab);
746: r->regtab = NULL;
747:
1.167 kristaps 748: roff_freestr(r->strtab);
1.306 schwarze 749: roff_freestr(r->rentab);
1.167 kristaps 750: roff_freestr(r->xmbtab);
1.306 schwarze 751: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 752:
753: if (r->xtab)
754: for (i = 0; i < 128; i++)
755: free(r->xtab[i].p);
756: free(r->xtab);
757: r->xtab = NULL;
1.67 kristaps 758: }
759:
760: void
761: roff_reset(struct roff *r)
762: {
763: roff_free1(r);
1.227 schwarze 764: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 765: r->control = '\0';
766: r->escape = '\\';
1.307 schwarze 767: roffce_lines = 0;
768: roffce_node = NULL;
769: roffit_lines = 0;
770: roffit_macro = NULL;
1.67 kristaps 771: }
772:
773: void
774: roff_free(struct roff *r)
775: {
1.339 schwarze 776: int i;
777:
1.67 kristaps 778: roff_free1(r);
1.339 schwarze 779: for (i = 0; i < r->mstacksz; i++)
780: free(r->mstack[i].argv);
781: free(r->mstack);
1.295 schwarze 782: roffhash_free(r->reqtab);
1.67 kristaps 783: free(r);
784: }
785:
786: struct roff *
1.279 schwarze 787: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 788: {
789: struct roff *r;
790:
1.98 schwarze 791: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 792: r->parse = parse;
1.328 schwarze 793: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.199 schwarze 794: r->options = options;
1.227 schwarze 795: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 796: r->mstackpos = -1;
1.82 kristaps 797: r->rstackpos = -1;
1.303 schwarze 798: r->escape = '\\';
1.277 schwarze 799: return r;
1.265 schwarze 800: }
801:
1.266 schwarze 802: /* --- syntax tree state data management ---------------------------------- */
803:
1.265 schwarze 804: static void
805: roff_man_free1(struct roff_man *man)
806: {
807:
1.266 schwarze 808: if (man->first != NULL)
809: roff_node_delete(man, man->first);
1.265 schwarze 810: free(man->meta.msec);
811: free(man->meta.vol);
812: free(man->meta.os);
813: free(man->meta.arch);
814: free(man->meta.title);
815: free(man->meta.name);
816: free(man->meta.date);
817: }
818:
819: static void
820: roff_man_alloc1(struct roff_man *man)
821: {
822:
823: memset(&man->meta, 0, sizeof(man->meta));
824: man->first = mandoc_calloc(1, sizeof(*man->first));
825: man->first->type = ROFFT_ROOT;
826: man->last = man->first;
827: man->last_es = NULL;
828: man->flags = 0;
829: man->macroset = MACROSET_NONE;
830: man->lastsec = man->lastnamed = SEC_NONE;
831: man->next = ROFF_NEXT_CHILD;
832: }
833:
834: void
835: roff_man_reset(struct roff_man *man)
836: {
837:
838: roff_man_free1(man);
839: roff_man_alloc1(man);
840: }
841:
842: void
843: roff_man_free(struct roff_man *man)
844: {
845:
846: roff_man_free1(man);
847: free(man);
848: }
849:
850: struct roff_man *
851: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.316 schwarze 852: const char *os_s, int quick)
1.265 schwarze 853: {
854: struct roff_man *man;
855:
856: man = mandoc_calloc(1, sizeof(*man));
857: man->parse = parse;
858: man->roff = roff;
1.316 schwarze 859: man->os_s = os_s;
1.265 schwarze 860: man->quick = quick;
861: roff_man_alloc1(man);
1.296 schwarze 862: roff->man = man;
1.277 schwarze 863: return man;
1.67 kristaps 864: }
865:
1.266 schwarze 866: /* --- syntax tree handling ----------------------------------------------- */
867:
868: struct roff_node *
869: roff_node_alloc(struct roff_man *man, int line, int pos,
870: enum roff_type type, int tok)
871: {
872: struct roff_node *n;
873:
874: n = mandoc_calloc(1, sizeof(*n));
875: n->line = line;
876: n->pos = pos;
877: n->tok = tok;
878: n->type = type;
879: n->sec = man->lastsec;
880:
881: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 882: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 883: else
1.285 schwarze 884: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 885: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 886: n->flags |= NODE_LINE;
1.266 schwarze 887: man->flags &= ~MDOC_NEWLINE;
888:
1.277 schwarze 889: return n;
1.266 schwarze 890: }
891:
892: void
893: roff_node_append(struct roff_man *man, struct roff_node *n)
894: {
895:
896: switch (man->next) {
897: case ROFF_NEXT_SIBLING:
1.281 schwarze 898: if (man->last->next != NULL) {
899: n->next = man->last->next;
900: man->last->next->prev = n;
901: } else
902: man->last->parent->last = n;
1.266 schwarze 903: man->last->next = n;
904: n->prev = man->last;
905: n->parent = man->last->parent;
906: break;
907: case ROFF_NEXT_CHILD:
1.287 schwarze 908: if (man->last->child != NULL) {
909: n->next = man->last->child;
910: man->last->child->prev = n;
911: } else
912: man->last->last = n;
1.266 schwarze 913: man->last->child = n;
914: n->parent = man->last;
915: break;
916: default:
917: abort();
918: }
1.282 schwarze 919: man->last = n;
1.266 schwarze 920:
921: switch (n->type) {
922: case ROFFT_HEAD:
923: n->parent->head = n;
924: break;
925: case ROFFT_BODY:
1.282 schwarze 926: if (n->end != ENDBODY_NOT)
927: return;
1.266 schwarze 928: n->parent->body = n;
929: break;
930: case ROFFT_TAIL:
931: n->parent->tail = n;
932: break;
933: default:
1.282 schwarze 934: return;
1.266 schwarze 935: }
1.282 schwarze 936:
937: /*
938: * Copy over the normalised-data pointer of our parent. Not
939: * everybody has one, but copying a null pointer is fine.
940: */
941:
942: n->norm = n->parent->norm;
943: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 944: }
945:
1.267 schwarze 946: void
947: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
948: {
949: struct roff_node *n;
950:
951: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
952: n->string = roff_strdup(man->roff, word);
953: roff_node_append(man, n);
1.286 schwarze 954: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 955: man->next = ROFF_NEXT_SIBLING;
956: }
957:
958: void
959: roff_word_append(struct roff_man *man, const char *word)
960: {
961: struct roff_node *n;
962: char *addstr, *newstr;
963:
964: n = man->last;
965: addstr = roff_strdup(man->roff, word);
966: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
967: free(addstr);
968: free(n->string);
969: n->string = newstr;
970: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 971: }
972:
973: void
974: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
975: {
976: struct roff_node *n;
977:
978: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
979: roff_node_append(man, n);
980: man->next = ROFF_NEXT_CHILD;
981: }
982:
983: struct roff_node *
984: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
985: {
986: struct roff_node *n;
987:
988: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
989: roff_node_append(man, n);
990: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 991: return n;
1.267 schwarze 992: }
993:
1.266 schwarze 994: struct roff_node *
995: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
996: {
997: struct roff_node *n;
998:
999: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1000: roff_node_append(man, n);
1001: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1002: return n;
1.266 schwarze 1003: }
1004:
1005: struct roff_node *
1006: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1007: {
1008: struct roff_node *n;
1009:
1010: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1011: roff_node_append(man, n);
1012: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1013: return n;
1.267 schwarze 1014: }
1015:
1.321 schwarze 1016: static void
1017: roff_addtbl(struct roff_man *man, struct tbl_node *tbl)
1.267 schwarze 1018: {
1019: struct roff_node *n;
1.321 schwarze 1020: const struct tbl_span *span;
1.267 schwarze 1021:
1022: if (man->macroset == MACROSET_MAN)
1.302 schwarze 1023: man_breakscope(man, ROFF_TS);
1.321 schwarze 1024: while ((span = tbl_span(tbl)) != NULL) {
1025: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1026: n->span = span;
1027: roff_node_append(man, n);
1028: n->flags |= NODE_VALID | NODE_ENDED;
1029: man->next = ROFF_NEXT_SIBLING;
1030: }
1.266 schwarze 1031: }
1032:
1033: void
1034: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1035: {
1036:
1037: /* Adjust siblings. */
1038:
1039: if (n->prev)
1040: n->prev->next = n->next;
1041: if (n->next)
1042: n->next->prev = n->prev;
1043:
1044: /* Adjust parent. */
1045:
1046: if (n->parent != NULL) {
1047: if (n->parent->child == n)
1048: n->parent->child = n->next;
1049: if (n->parent->last == n)
1050: n->parent->last = n->prev;
1051: }
1052:
1053: /* Adjust parse point. */
1054:
1055: if (man == NULL)
1056: return;
1057: if (man->last == n) {
1058: if (n->prev == NULL) {
1059: man->last = n->parent;
1060: man->next = ROFF_NEXT_CHILD;
1061: } else {
1062: man->last = n->prev;
1063: man->next = ROFF_NEXT_SIBLING;
1064: }
1065: }
1066: if (man->first == n)
1067: man->first = NULL;
1.344 schwarze 1068: }
1069:
1070: void
1071: roff_node_relink(struct roff_man *man, struct roff_node *n)
1072: {
1073: roff_node_unlink(man, n);
1074: n->prev = n->next = NULL;
1075: roff_node_append(man, n);
1.266 schwarze 1076: }
1077:
1078: void
1079: roff_node_free(struct roff_node *n)
1080: {
1081:
1082: if (n->args != NULL)
1083: mdoc_argv_free(n->args);
1084: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1085: free(n->norm);
1.319 schwarze 1086: if (n->eqn != NULL)
1087: eqn_box_free(n->eqn);
1.266 schwarze 1088: free(n->string);
1089: free(n);
1090: }
1091:
1092: void
1093: roff_node_delete(struct roff_man *man, struct roff_node *n)
1094: {
1095:
1096: while (n->child != NULL)
1097: roff_node_delete(man, n->child);
1098: roff_node_unlink(man, n);
1099: roff_node_free(n);
1.269 schwarze 1100: }
1101:
1102: void
1103: deroff(char **dest, const struct roff_node *n)
1104: {
1105: char *cp;
1106: size_t sz;
1107:
1108: if (n->type != ROFFT_TEXT) {
1109: for (n = n->child; n != NULL; n = n->next)
1110: deroff(dest, n);
1111: return;
1112: }
1113:
1.288 schwarze 1114: /* Skip leading whitespace. */
1.269 schwarze 1115:
1.288 schwarze 1116: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1117: if (cp[0] == '\\' && cp[1] != '\0' &&
1118: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1119: cp++;
1.288 schwarze 1120: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1121: break;
1122: }
1123:
1.289 schwarze 1124: /* Skip trailing backslash. */
1125:
1126: sz = strlen(cp);
1.290 schwarze 1127: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1128: sz--;
1129:
1.269 schwarze 1130: /* Skip trailing whitespace. */
1131:
1.289 schwarze 1132: for (; sz; sz--)
1.269 schwarze 1133: if ( ! isspace((unsigned char)cp[sz-1]))
1134: break;
1135:
1136: /* Skip empty strings. */
1137:
1138: if (sz == 0)
1139: return;
1140:
1141: if (*dest == NULL) {
1142: *dest = mandoc_strndup(cp, sz);
1143: return;
1144: }
1145:
1146: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1147: free(*dest);
1148: *dest = cp;
1.266 schwarze 1149: }
1150:
1151: /* --- main functions of the roff parser ---------------------------------- */
1152:
1.94 kristaps 1153: /*
1.206 schwarze 1154: * In the current line, expand escape sequences that tend to get
1155: * used in numerical expressions and conditional requests.
1156: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1157: */
1.340 schwarze 1158: static int
1.238 schwarze 1159: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1160: {
1.339 schwarze 1161: struct mctx *ctx; /* current macro call context */
1.208 schwarze 1162: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1163: struct roff_node *n; /* used for header comments */
1.205 schwarze 1164: const char *start; /* start of the string to process */
1.209 schwarze 1165: char *stesc; /* start of an escape sequence ('\\') */
1.328 schwarze 1166: char *ep; /* end of comment string */
1.108 schwarze 1167: const char *stnam; /* start of the name, after "[(*" */
1168: const char *cp; /* end of the name, e.g. before ']' */
1169: const char *res; /* the string to be substituted */
1.238 schwarze 1170: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1171: size_t maxl; /* expected length of the escape name */
1172: size_t naml; /* actual length of the escape name */
1.339 schwarze 1173: size_t asz; /* length of the replacement */
1174: size_t rsz; /* length of the rest of the string */
1.237 schwarze 1175: enum mandoc_esc esc; /* type of the escape sequence */
1176: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1177: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1178: int npos; /* position in numeric expression */
1.218 schwarze 1179: int arg_complete; /* argument not interrupted by eol */
1.339 schwarze 1180: int quote_args; /* true for \\$@, false for \\$* */
1.303 schwarze 1181: int done; /* no more input available */
1.315 schwarze 1182: int deftype; /* type of definition to paste */
1.323 schwarze 1183: int rcsid; /* kind of RCS id seen */
1.327 schwarze 1184: char sign; /* increment number register */
1.206 schwarze 1185: char term; /* character terminating the escape */
1.94 kristaps 1186:
1.303 schwarze 1187: /* Search forward for comments. */
1188:
1189: done = 0;
1190: start = buf->buf + pos;
1191: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1192: if (stesc[0] != r->escape || stesc[1] == '\0')
1193: continue;
1194: stesc++;
1195: if (*stesc != '"' && *stesc != '#')
1196: continue;
1.313 schwarze 1197:
1198: /* Comment found, look for RCS id. */
1199:
1.323 schwarze 1200: rcsid = 0;
1.313 schwarze 1201: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1202: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1203: cp += 8;
1204: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1205: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1206: cp += 7;
1207: }
1208: if (cp != NULL &&
1209: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1210: strchr(cp, '$') != NULL) {
1.323 schwarze 1211: if (r->man->meta.rcsids & rcsid)
1.314 schwarze 1212: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1213: ln, stesc + 1 - buf->buf, stesc + 1);
1.323 schwarze 1214: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1215: }
1.313 schwarze 1216:
1217: /* Handle trailing whitespace. */
1218:
1.328 schwarze 1219: ep = strchr(stesc--, '\0') - 1;
1220: if (*ep == '\n') {
1.303 schwarze 1221: done = 1;
1.328 schwarze 1222: ep--;
1.303 schwarze 1223: }
1.328 schwarze 1224: if (*ep == ' ' || *ep == '\t')
1.303 schwarze 1225: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1.328 schwarze 1226: ln, ep - buf->buf, NULL);
1227:
1228: /*
1229: * Save comments preceding the title macro
1230: * in the syntax tree.
1231: */
1232:
1233: if (r->format == 0) {
1234: while (*ep == ' ' || *ep == '\t')
1235: ep--;
1236: ep[1] = '\0';
1237: n = roff_node_alloc(r->man,
1238: ln, stesc + 1 - buf->buf,
1239: ROFFT_COMMENT, TOKEN_NONE);
1240: n->string = mandoc_strdup(stesc + 2);
1241: roff_node_append(r->man, n);
1242: n->flags |= NODE_VALID | NODE_ENDED;
1243: r->man->next = ROFF_NEXT_SIBLING;
1244: }
1245:
1.334 schwarze 1246: /* Line continuation with comment. */
1247:
1248: if (stesc[1] == '#') {
1249: *stesc = '\0';
1.340 schwarze 1250: return ROFF_IGN | ROFF_APPEND;
1.334 schwarze 1251: }
1252:
1253: /* Discard normal comments. */
1.328 schwarze 1254:
1.335 schwarze 1255: while (stesc > start && stesc[-1] == ' ' &&
1256: (stesc == start + 1 || stesc[-2] != '\\'))
1.303 schwarze 1257: stesc--;
1258: *stesc = '\0';
1259: break;
1260: }
1261: if (stesc == start)
1262: return ROFF_CONT;
1263: stesc--;
1264:
1265: /* Notice the end of the input. */
1266:
1267: if (*stesc == '\n') {
1268: *stesc-- = '\0';
1269: done = 1;
1270: }
1271:
1.170 schwarze 1272: expand_count = 0;
1.303 schwarze 1273: while (stesc >= start) {
1.170 schwarze 1274:
1.205 schwarze 1275: /* Search backwards for the next backslash. */
1276:
1.303 schwarze 1277: if (*stesc != r->escape) {
1278: if (*stesc == '\\') {
1279: *stesc = '\0';
1280: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1281: buf->buf, stesc + 1) + 1;
1282: start = nbuf + pos;
1283: stesc = nbuf + (stesc - buf->buf);
1284: free(buf->buf);
1285: buf->buf = nbuf;
1286: }
1287: stesc--;
1.205 schwarze 1288: continue;
1.303 schwarze 1289: }
1.205 schwarze 1290:
1291: /* If it is escaped, skip it. */
1292:
1293: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1294: if (*cp != r->escape)
1.205 schwarze 1295: break;
1296:
1.238 schwarze 1297: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1298: while (stesc > cp)
1299: *stesc-- = '\\';
1.205 schwarze 1300: continue;
1.303 schwarze 1301: } else if (stesc[1] != '\0') {
1302: *stesc = '\\';
1303: } else {
1304: *stesc-- = '\0';
1305: if (done)
1306: continue;
1307: else
1.340 schwarze 1308: return ROFF_IGN | ROFF_APPEND;
1.205 schwarze 1309: }
1.108 schwarze 1310:
1.206 schwarze 1311: /* Decide whether to expand or to check only. */
1.108 schwarze 1312:
1.206 schwarze 1313: term = '\0';
1.205 schwarze 1314: cp = stesc + 1;
1.181 schwarze 1315: switch (*cp) {
1.207 schwarze 1316: case '*':
1.339 schwarze 1317: case '$':
1.181 schwarze 1318: res = NULL;
1319: break;
1.207 schwarze 1320: case 'B':
1321: case 'w':
1.206 schwarze 1322: term = cp[1];
1323: /* FALLTHROUGH */
1.207 schwarze 1324: case 'n':
1.327 schwarze 1325: sign = cp[1];
1326: if (sign == '+' || sign == '-')
1327: cp++;
1.181 schwarze 1328: res = ubuf;
1329: break;
1330: default:
1.237 schwarze 1331: esc = mandoc_escape(&cp, &stnam, &inaml);
1332: if (esc == ESCAPE_ERROR ||
1333: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1334: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1335: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1336: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1337: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1338: stesc--;
1.205 schwarze 1339: continue;
1.152 kristaps 1340: }
1341:
1.205 schwarze 1342: if (EXPAND_LIMIT < ++expand_count) {
1343: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1344: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1345: return ROFF_IGN;
1.205 schwarze 1346: }
1.108 schwarze 1347:
1348: /*
1349: * The third character decides the length
1.181 schwarze 1350: * of the name of the string or register.
1.108 schwarze 1351: * Save a pointer to the name.
1352: */
1353:
1.238 schwarze 1354: if (term == '\0') {
1.206 schwarze 1355: switch (*++cp) {
1.207 schwarze 1356: case '\0':
1.206 schwarze 1357: maxl = 0;
1358: break;
1.207 schwarze 1359: case '(':
1.206 schwarze 1360: cp++;
1361: maxl = 2;
1362: break;
1.207 schwarze 1363: case '[':
1.206 schwarze 1364: cp++;
1365: term = ']';
1366: maxl = 0;
1367: break;
1368: default:
1369: maxl = 1;
1370: break;
1371: }
1372: } else {
1373: cp += 2;
1.94 kristaps 1374: maxl = 0;
1375: }
1.108 schwarze 1376: stnam = cp;
1.94 kristaps 1377:
1.108 schwarze 1378: /* Advance to the end of the name. */
1.94 kristaps 1379:
1.253 schwarze 1380: naml = 0;
1.218 schwarze 1381: arg_complete = 1;
1.253 schwarze 1382: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1383: if (*cp == '\0') {
1.219 schwarze 1384: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1385: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1386: arg_complete = 0;
1.206 schwarze 1387: break;
1.153 kristaps 1388: }
1.238 schwarze 1389: if (maxl == 0 && *cp == term) {
1.206 schwarze 1390: cp++;
1.253 schwarze 1391: break;
1392: }
1393: if (*cp++ != '\\' || stesc[1] != 'w') {
1394: naml++;
1395: continue;
1396: }
1397: switch (mandoc_escape(&cp, NULL, NULL)) {
1398: case ESCAPE_SPECIAL:
1399: case ESCAPE_UNICODE:
1400: case ESCAPE_NUMBERED:
1401: case ESCAPE_OVERSTRIKE:
1402: naml++;
1403: break;
1404: default:
1.94 kristaps 1405: break;
1.206 schwarze 1406: }
1.94 kristaps 1407: }
1408:
1.108 schwarze 1409: /*
1410: * Retrieve the replacement string; if it is
1411: * undefined, resume searching for escapes.
1412: */
1413:
1.206 schwarze 1414: switch (stesc[1]) {
1.207 schwarze 1415: case '*':
1.315 schwarze 1416: if (arg_complete) {
1417: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1418: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1419:
1420: /*
1421: * If not overriden, let \*(.T
1422: * through to the formatters.
1423: */
1424:
1425: if (res == NULL && naml == 2 &&
1426: stnam[0] == '.' && stnam[1] == 'T') {
1427: roff_setstrn(&r->strtab,
1428: ".T", 2, NULL, 0, 0);
1429: stesc--;
1430: continue;
1431: }
1.315 schwarze 1432: }
1.206 schwarze 1433: break;
1.339 schwarze 1434: case '$':
1435: if (r->mstackpos < 0) {
1436: mandoc_vmsg(MANDOCERR_ARG_UNDEF,
1437: r->parse, ln, (int)(stesc - buf->buf),
1438: "%.3s", stesc);
1439: break;
1440: }
1441: ctx = r->mstack + r->mstackpos;
1442: npos = stesc[2] - '1';
1443: if (npos >= 0 && npos <= 8) {
1444: res = npos < ctx->argc ?
1445: ctx->argv[npos] : "";
1446: break;
1447: }
1448: if (stesc[2] == '*')
1449: quote_args = 0;
1450: else if (stesc[2] == '@')
1451: quote_args = 1;
1452: else {
1453: mandoc_vmsg(MANDOCERR_ARG_NONUM,
1454: r->parse, ln, (int)(stesc - buf->buf),
1455: "%.3s", stesc);
1456: break;
1457: }
1458: asz = 0;
1459: for (npos = 0; npos < ctx->argc; npos++) {
1460: if (npos)
1461: asz++; /* blank */
1462: if (quote_args)
1463: asz += 2; /* quotes */
1464: asz += strlen(ctx->argv[npos]);
1465: }
1466: if (asz != 3) {
1467: rsz = buf->sz - (stesc - buf->buf) - 3;
1468: if (asz < 3)
1469: memmove(stesc + asz, stesc + 3, rsz);
1470: buf->sz += asz - 3;
1471: nbuf = mandoc_realloc(buf->buf, buf->sz);
1472: start = nbuf + pos;
1473: stesc = nbuf + (stesc - buf->buf);
1474: buf->buf = nbuf;
1475: if (asz > 3)
1476: memmove(stesc + asz, stesc + 3, rsz);
1477: }
1478: for (npos = 0; npos < ctx->argc; npos++) {
1479: if (npos)
1480: *stesc++ = ' ';
1481: if (quote_args)
1482: *stesc++ = '"';
1483: cp = ctx->argv[npos];
1484: while (*cp != '\0')
1485: *stesc++ = *cp++;
1486: if (quote_args)
1487: *stesc++ = '"';
1488: }
1489: continue;
1.207 schwarze 1490: case 'B':
1.206 schwarze 1491: npos = 0;
1.218 schwarze 1492: ubuf[0] = arg_complete &&
1.261 schwarze 1493: roff_evalnum(r, ln, stnam, &npos,
1494: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1495: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1496: ubuf[1] = '\0';
1497: break;
1.207 schwarze 1498: case 'n':
1.218 schwarze 1499: if (arg_complete)
1500: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1501: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1502: else
1503: ubuf[0] = '\0';
1.206 schwarze 1504: break;
1.207 schwarze 1505: case 'w':
1.218 schwarze 1506: /* use even incomplete args */
1.208 schwarze 1507: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1508: 24 * (int)naml);
1509: break;
1510: }
1.94 kristaps 1511:
1.238 schwarze 1512: if (res == NULL) {
1.339 schwarze 1513: if (stesc[1] == '*')
1514: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1515: r->parse, ln, (int)(stesc - buf->buf),
1516: "%.*s", (int)naml, stnam);
1.142 kristaps 1517: res = "";
1.246 schwarze 1518: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1519: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1520: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1521: return ROFF_IGN;
1.94 kristaps 1522: }
1523:
1.108 schwarze 1524: /* Replace the escape sequence by the string. */
1525:
1.209 schwarze 1526: *stesc = '\0';
1.238 schwarze 1527: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1528: buf->buf, res, cp) + 1;
1.94 kristaps 1529:
1.205 schwarze 1530: /* Prepare for the next replacement. */
1.94 kristaps 1531:
1.205 schwarze 1532: start = nbuf + pos;
1.238 schwarze 1533: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1534: free(buf->buf);
1535: buf->buf = nbuf;
1.154 kristaps 1536: }
1.277 schwarze 1537: return ROFF_CONT;
1.154 kristaps 1538: }
1539:
1540: /*
1.275 schwarze 1541: * Process text streams.
1.154 kristaps 1542: */
1.340 schwarze 1543: static int
1.305 schwarze 1544: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1545: {
1546: size_t sz;
1547: const char *start;
1.178 schwarze 1548: char *p;
1549: int isz;
1.154 kristaps 1550: enum mandoc_esc esc;
1551:
1.275 schwarze 1552: /* Spring the input line trap. */
1553:
1554: if (roffit_lines == 1) {
1555: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1556: free(buf->buf);
1557: buf->buf = p;
1558: buf->sz = isz + 1;
1559: *offs = 0;
1560: free(roffit_macro);
1561: roffit_lines = 0;
1.277 schwarze 1562: return ROFF_REPARSE;
1.275 schwarze 1563: } else if (roffit_lines > 1)
1564: --roffit_lines;
1565:
1.305 schwarze 1566: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1567: if (roffce_lines < 1) {
1568: r->man->last = roffce_node;
1569: r->man->next = ROFF_NEXT_SIBLING;
1570: roffce_lines = 0;
1571: roffce_node = NULL;
1572: } else
1573: roffce_lines--;
1574: }
1575:
1.275 schwarze 1576: /* Convert all breakable hyphens into ASCII_HYPH. */
1577:
1.238 schwarze 1578: start = p = buf->buf + pos;
1.154 kristaps 1579:
1.238 schwarze 1580: while (*p != '\0') {
1.154 kristaps 1581: sz = strcspn(p, "-\\");
1582: p += sz;
1583:
1.238 schwarze 1584: if (*p == '\0')
1.159 kristaps 1585: break;
1586:
1.238 schwarze 1587: if (*p == '\\') {
1.154 kristaps 1588: /* Skip over escapes. */
1589: p++;
1.189 schwarze 1590: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1591: if (esc == ESCAPE_ERROR)
1.154 kristaps 1592: break;
1.264 schwarze 1593: while (*p == '-')
1594: p++;
1.155 kristaps 1595: continue;
1.159 kristaps 1596: } else if (p == start) {
1.158 kristaps 1597: p++;
1.155 kristaps 1598: continue;
1.158 kristaps 1599: }
1.155 kristaps 1600:
1.171 schwarze 1601: if (isalpha((unsigned char)p[-1]) &&
1602: isalpha((unsigned char)p[1]))
1.155 kristaps 1603: *p = ASCII_HYPH;
1604: p++;
1.94 kristaps 1605: }
1.277 schwarze 1606: return ROFF_CONT;
1.94 kristaps 1607: }
1608:
1.340 schwarze 1609: int
1.238 schwarze 1610: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1611: {
1.294 schwarze 1612: enum roff_tok t;
1.340 schwarze 1613: int e;
1.238 schwarze 1614: int pos; /* parse point */
1.243 schwarze 1615: int spos; /* saved parse point for messages */
1.238 schwarze 1616: int ppos; /* original offset in buf->buf */
1617: int ctl; /* macro line (boolean) */
1618:
1619: ppos = pos = *offs;
1.79 kristaps 1620:
1.230 schwarze 1621: /* Handle in-line equation delimiters. */
1622:
1.236 schwarze 1623: if (r->tbl == NULL &&
1624: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1625: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1626: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1627: if (e == ROFF_REPARSE)
1.277 schwarze 1628: return e;
1.230 schwarze 1629: assert(e == ROFF_CONT);
1630: }
1631:
1632: /* Expand some escape sequences. */
1.94 kristaps 1633:
1.238 schwarze 1634: e = roff_res(r, buf, ln, pos);
1.340 schwarze 1635: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1636: return e;
1.238 schwarze 1637: assert(e == ROFF_CONT);
1.94 kristaps 1638:
1.238 schwarze 1639: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1640:
1.94 kristaps 1641: /*
1.79 kristaps 1642: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1643: * text through the macro's filter.
1644: * Equations process all content themselves.
1645: * Tables process almost all content themselves, but we want
1646: * to warn about macros before passing it there.
1.79 kristaps 1647: */
1.74 kristaps 1648:
1.252 schwarze 1649: if (r->last != NULL && ! ctl) {
1.78 kristaps 1650: t = r->last->tok;
1.238 schwarze 1651: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1652: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1653: return e;
1.340 schwarze 1654: e &= ~ROFF_MASK;
1655: } else
1656: e = ROFF_IGN;
1.319 schwarze 1657: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1658: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1659: return e;
1.319 schwarze 1660: }
1.321 schwarze 1661: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1662: tbl_read(r->tbl, ln, buf->buf, ppos);
1663: roff_addtbl(r->man, r->tbl);
1.340 schwarze 1664: return e;
1.321 schwarze 1665: }
1.252 schwarze 1666: if ( ! ctl)
1.340 schwarze 1667: return roff_parsetext(r, buf, pos, offs) | e;
1.228 schwarze 1668:
1669: /* Skip empty request lines. */
1670:
1.238 schwarze 1671: if (buf->buf[pos] == '"') {
1.228 schwarze 1672: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1673: ln, pos, NULL);
1.277 schwarze 1674: return ROFF_IGN;
1.238 schwarze 1675: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1676: return ROFF_IGN;
1.67 kristaps 1677:
1.79 kristaps 1678: /*
1679: * If a scope is open, go to the child handler for that macro,
1680: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1681: * Don't do so if an equation is open.
1.79 kristaps 1682: */
1.78 kristaps 1683:
1.79 kristaps 1684: if (r->last) {
1685: t = r->last->tok;
1.277 schwarze 1686: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1687: }
1.78 kristaps 1688:
1.243 schwarze 1689: /* No scope is open. This is a new request or macro. */
1690:
1691: spos = pos;
1692: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1693:
1694: /* Tables ignore most macros. */
1695:
1.308 schwarze 1696: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1697: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.243 schwarze 1698: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1699: ln, pos, buf->buf + spos);
1.308 schwarze 1700: if (t != TOKEN_NONE)
1.277 schwarze 1701: return ROFF_IGN;
1.257 schwarze 1702: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1703: pos++;
1.291 schwarze 1704: while (buf->buf[pos] == ' ')
1.257 schwarze 1705: pos++;
1.321 schwarze 1706: tbl_read(r->tbl, ln, buf->buf, pos);
1707: roff_addtbl(r->man, r->tbl);
1708: return ROFF_IGN;
1.243 schwarze 1709: }
1710:
1.305 schwarze 1711: /* For now, let high level macros abort .ce mode. */
1712:
1713: if (ctl && roffce_node != NULL &&
1.324 schwarze 1714: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1715: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1716: r->man->last = roffce_node;
1717: r->man->next = ROFF_NEXT_SIBLING;
1718: roffce_lines = 0;
1719: roffce_node = NULL;
1720: }
1721:
1.79 kristaps 1722: /*
1.243 schwarze 1723: * This is neither a roff request nor a user-defined macro.
1724: * Let the standard macro set parsers handle it.
1.79 kristaps 1725: */
1.67 kristaps 1726:
1.294 schwarze 1727: if (t == TOKEN_NONE)
1.277 schwarze 1728: return ROFF_CONT;
1.243 schwarze 1729:
1730: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1731:
1.296 schwarze 1732: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1733: }
1734:
1.339 schwarze 1735: /*
1736: * Internal interface function to tell the roff parser that execution
1737: * of the current macro ended. This is required because macro
1738: * definitions usually do not end with a .return request.
1739: */
1740: void
1741: roff_userret(struct roff *r)
1742: {
1743: struct mctx *ctx;
1744: int i;
1745:
1746: assert(r->mstackpos >= 0);
1747: ctx = r->mstack + r->mstackpos;
1748: for (i = 0; i < ctx->argc; i++)
1749: free(ctx->argv[i]);
1750: ctx->argc = 0;
1751: r->mstackpos--;
1752: }
1753:
1.117 kristaps 1754: void
1.74 kristaps 1755: roff_endparse(struct roff *r)
1756: {
1.321 schwarze 1757: if (r->last != NULL)
1.221 schwarze 1758: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1759: r->last->line, r->last->col,
1.295 schwarze 1760: roff_name[r->last->tok]);
1.117 kristaps 1761:
1.321 schwarze 1762: if (r->eqn != NULL) {
1.221 schwarze 1763: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.319 schwarze 1764: r->eqn->node->line, r->eqn->node->pos, "EQ");
1765: eqn_parse(r->eqn);
1766: r->eqn = NULL;
1.125 kristaps 1767: }
1768:
1.321 schwarze 1769: if (r->tbl != NULL) {
1.221 schwarze 1770: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1771: r->tbl->line, r->tbl->pos, "TS");
1.321 schwarze 1772: tbl_end(r->tbl);
1773: r->tbl = NULL;
1.117 kristaps 1774: }
1.67 kristaps 1775: }
1776:
1777: /*
1778: * Parse a roff node's type from the input buffer. This must be in the
1779: * form of ".foo xxx" in the usual way.
1780: */
1.294 schwarze 1781: static enum roff_tok
1.214 schwarze 1782: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1783: {
1.214 schwarze 1784: char *cp;
1.106 kristaps 1785: const char *mac;
1786: size_t maclen;
1.315 schwarze 1787: int deftype;
1.294 schwarze 1788: enum roff_tok t;
1.67 kristaps 1789:
1.214 schwarze 1790: cp = buf + *pos;
1791:
1792: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1793: return TOKEN_NONE;
1.67 kristaps 1794:
1.214 schwarze 1795: mac = cp;
1796: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1797:
1.315 schwarze 1798: deftype = ROFFDEF_USER | ROFFDEF_REN;
1799: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1800: switch (deftype) {
1801: case ROFFDEF_USER:
1802: t = ROFF_USERDEF;
1803: break;
1804: case ROFFDEF_REN:
1805: t = ROFF_RENAMED;
1806: break;
1807: default:
1808: t = roffhash_find(r->reqtab, mac, maclen);
1809: break;
1810: }
1.294 schwarze 1811: if (t != TOKEN_NONE)
1.214 schwarze 1812: *pos = cp - buf;
1.325 schwarze 1813: else if (deftype == ROFFDEF_UNDEF) {
1814: /* Using an undefined macro defines it to be empty. */
1815: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1816: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1817: }
1.277 schwarze 1818: return t;
1.67 kristaps 1819: }
1820:
1.266 schwarze 1821: /* --- handling of request blocks ----------------------------------------- */
1822:
1.340 schwarze 1823: static int
1.76 kristaps 1824: roff_cblock(ROFF_ARGS)
1.67 kristaps 1825: {
1826:
1.79 kristaps 1827: /*
1828: * A block-close `..' should only be invoked as a child of an
1829: * ignore macro, otherwise raise a warning and just ignore it.
1830: */
1831:
1.238 schwarze 1832: if (r->last == NULL) {
1.221 schwarze 1833: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1834: ln, ppos, "..");
1.277 schwarze 1835: return ROFF_IGN;
1.76 kristaps 1836: }
1.67 kristaps 1837:
1.81 kristaps 1838: switch (r->last->tok) {
1.207 schwarze 1839: case ROFF_am:
1.220 schwarze 1840: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1841: case ROFF_ami:
1842: case ROFF_de:
1.108 schwarze 1843: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1844: case ROFF_dei:
1845: case ROFF_ig:
1.81 kristaps 1846: break;
1847: default:
1.221 schwarze 1848: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1849: ln, ppos, "..");
1.277 schwarze 1850: return ROFF_IGN;
1.76 kristaps 1851: }
1.67 kristaps 1852:
1.238 schwarze 1853: if (buf->buf[pos] != '\0')
1.217 schwarze 1854: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1855: ".. %s", buf->buf + pos);
1.71 kristaps 1856:
1857: roffnode_pop(r);
1.76 kristaps 1858: roffnode_cleanscope(r);
1.277 schwarze 1859: return ROFF_IGN;
1.71 kristaps 1860:
1.67 kristaps 1861: }
1862:
1.340 schwarze 1863: static int
1.76 kristaps 1864: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1865: {
1.340 schwarze 1866: int inloop;
1.67 kristaps 1867:
1.340 schwarze 1868: inloop = 0;
1869: while (r->last != NULL) {
1.173 schwarze 1870: if (--r->last->endspan != 0)
1.76 kristaps 1871: break;
1.340 schwarze 1872: inloop += roffnode_pop(r);
1.76 kristaps 1873: }
1.340 schwarze 1874: return inloop;
1.67 kristaps 1875: }
1876:
1.340 schwarze 1877: static int
1.195 schwarze 1878: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1879: {
1.76 kristaps 1880: if (NULL == r->last) {
1.221 schwarze 1881: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1882: ln, ppos, "\\}");
1.340 schwarze 1883: return 0;
1.76 kristaps 1884: }
1885:
1.82 kristaps 1886: switch (r->last->tok) {
1.207 schwarze 1887: case ROFF_el:
1888: case ROFF_ie:
1889: case ROFF_if:
1.340 schwarze 1890: case ROFF_while:
1.82 kristaps 1891: break;
1892: default:
1.221 schwarze 1893: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1894: ln, ppos, "\\}");
1.340 schwarze 1895: return 0;
1.75 kristaps 1896: }
1897:
1.76 kristaps 1898: if (r->last->endspan > -1) {
1.221 schwarze 1899: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1900: ln, ppos, "\\}");
1.340 schwarze 1901: return 0;
1.76 kristaps 1902: }
1903:
1.340 schwarze 1904: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 1905: }
1906:
1.340 schwarze 1907: static int
1.80 kristaps 1908: roff_block(ROFF_ARGS)
1.76 kristaps 1909: {
1.315 schwarze 1910: const char *name, *value;
1911: char *call, *cp, *iname, *rname;
1912: size_t csz, namesz, rsz;
1913: int deftype;
1.106 kristaps 1914:
1.220 schwarze 1915: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1916:
1.238 schwarze 1917: if (tok == ROFF_de1)
1.220 schwarze 1918: tok = ROFF_de;
1.251 schwarze 1919: else if (tok == ROFF_dei1)
1920: tok = ROFF_dei;
1.238 schwarze 1921: else if (tok == ROFF_am1)
1.220 schwarze 1922: tok = ROFF_am;
1.251 schwarze 1923: else if (tok == ROFF_ami1)
1924: tok = ROFF_ami;
1.220 schwarze 1925:
1926: /* Parse the macro name argument. */
1927:
1.238 schwarze 1928: cp = buf->buf + pos;
1929: if (tok == ROFF_ig) {
1.220 schwarze 1930: iname = NULL;
1931: namesz = 0;
1932: } else {
1933: iname = cp;
1934: namesz = roff_getname(r, &cp, ln, ppos);
1935: iname[namesz] = '\0';
1936: }
1.107 kristaps 1937:
1.220 schwarze 1938: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1939:
1.238 schwarze 1940: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1941: deftype = ROFFDEF_USER;
1942: name = roff_getstrn(r, iname, namesz, &deftype);
1943: if (name == NULL) {
1.220 schwarze 1944: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1945: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1946: "%.*s", (int)namesz, iname);
1947: namesz = 0;
1948: } else
1949: namesz = strlen(name);
1950: } else
1951: name = iname;
1.107 kristaps 1952:
1.238 schwarze 1953: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1954: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1955: ln, ppos, roff_name[tok]);
1.277 schwarze 1956: return ROFF_IGN;
1.220 schwarze 1957: }
1.80 kristaps 1958:
1.106 kristaps 1959: roffnode_push(r, tok, name, ln, ppos);
1960:
1961: /*
1962: * At the beginning of a `de' macro, clear the existing string
1963: * with the same name, if there is one. New content will be
1.193 schwarze 1964: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1965: */
1.107 kristaps 1966:
1.311 schwarze 1967: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 1968: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 1969: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 1970: } else if (tok == ROFF_am || tok == ROFF_ami) {
1971: deftype = ROFFDEF_ANY;
1972: value = roff_getstrn(r, iname, namesz, &deftype);
1973: switch (deftype) { /* Before appending, ... */
1974: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1975: roff_setstrn(&r->strtab, name, namesz,
1976: value, strlen(value), 0);
1977: break;
1978: case ROFFDEF_REN: /* call original standard macro. */
1979: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1980: (int)strlen(value), value);
1981: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1982: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1983: free(call);
1984: break;
1985: case ROFFDEF_STD: /* rename and call standard macro. */
1986: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1987: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1988: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1989: (int)rsz, rname);
1990: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1991: free(call);
1992: free(rname);
1993: break;
1994: default:
1995: break;
1996: }
1.311 schwarze 1997: }
1.76 kristaps 1998:
1.238 schwarze 1999: if (*cp == '\0')
1.277 schwarze 2000: return ROFF_IGN;
1.78 kristaps 2001:
1.220 schwarze 2002: /* Get the custom end marker. */
1.107 kristaps 2003:
1.220 schwarze 2004: iname = cp;
1.213 schwarze 2005: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 2006:
2007: /* Resolve the end marker if it is indirect. */
2008:
1.238 schwarze 2009: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2010: deftype = ROFFDEF_USER;
2011: name = roff_getstrn(r, iname, namesz, &deftype);
2012: if (name == NULL) {
1.220 schwarze 2013: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 2014: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 2015: "%.*s", (int)namesz, iname);
2016: namesz = 0;
2017: } else
2018: namesz = strlen(name);
2019: } else
2020: name = iname;
2021:
1.213 schwarze 2022: if (namesz)
2023: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2024:
1.238 schwarze 2025: if (*cp != '\0')
1.217 schwarze 2026: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 2027: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2028:
1.277 schwarze 2029: return ROFF_IGN;
1.78 kristaps 2030: }
2031:
1.340 schwarze 2032: static int
1.80 kristaps 2033: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2034: {
1.294 schwarze 2035: enum roff_tok t;
1.79 kristaps 2036: int i, j;
2037:
2038: /*
2039: * First check whether a custom macro exists at this level. If
2040: * it does, then check against it. This is some of groff's
2041: * stranger behaviours. If we encountered a custom end-scope
2042: * tag and that tag also happens to be a "real" macro, then we
2043: * need to try interpreting it again as a real macro. If it's
2044: * not, then return ignore. Else continue.
2045: */
2046:
2047: if (r->last->end) {
1.130 kristaps 2048: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2049: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2050: break;
2051:
1.238 schwarze 2052: if (r->last->end[j] == '\0' &&
2053: (buf->buf[i] == '\0' ||
2054: buf->buf[i] == ' ' ||
2055: buf->buf[i] == '\t')) {
1.79 kristaps 2056: roffnode_pop(r);
2057: roffnode_cleanscope(r);
2058:
1.238 schwarze 2059: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2060: i++;
2061:
2062: pos = i;
1.238 schwarze 2063: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2064: TOKEN_NONE)
1.277 schwarze 2065: return ROFF_RERUN;
2066: return ROFF_IGN;
1.79 kristaps 2067: }
2068: }
2069:
2070: /*
2071: * If we have no custom end-query or lookup failed, then try
2072: * pulling it out of the hashtable.
2073: */
2074:
1.238 schwarze 2075: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 2076:
1.238 schwarze 2077: if (t != ROFF_cblock) {
2078: if (tok != ROFF_ig)
2079: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 2080: return ROFF_IGN;
1.106 kristaps 2081: }
1.79 kristaps 2082:
1.277 schwarze 2083: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2084: }
2085:
1.340 schwarze 2086: static int
1.80 kristaps 2087: roff_block_text(ROFF_ARGS)
1.78 kristaps 2088: {
2089:
1.238 schwarze 2090: if (tok != ROFF_ig)
2091: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2092:
1.277 schwarze 2093: return ROFF_IGN;
1.78 kristaps 2094: }
2095:
1.340 schwarze 2096: static int
1.82 kristaps 2097: roff_cond_sub(ROFF_ARGS)
2098: {
1.340 schwarze 2099: char *ep;
2100: int endloop, irc, rr;
1.294 schwarze 2101: enum roff_tok t;
1.82 kristaps 2102:
1.340 schwarze 2103: irc = ROFF_IGN;
1.82 kristaps 2104: rr = r->last->rule;
1.340 schwarze 2105: endloop = tok != ROFF_while ? ROFF_IGN :
2106: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2107: if (roffnode_cleanscope(r))
2108: irc |= endloop;
1.144 kristaps 2109:
1.196 schwarze 2110: /*
2111: * If `\}' occurs on a macro line without a preceding macro,
2112: * drop the line completely.
2113: */
2114:
1.238 schwarze 2115: ep = buf->buf + pos;
2116: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 2117: rr = 0;
1.196 schwarze 2118:
1.343 schwarze 2119: /*
2120: * The closing delimiter `\}' rewinds the conditional scope
2121: * but is otherwise ignored when interpreting the line.
2122: */
1.144 kristaps 2123:
1.238 schwarze 2124: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2125: switch (ep[1]) {
2126: case '}':
2127: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2128: if (roff_ccond(r, ln, ep - buf->buf))
2129: irc |= endloop;
1.318 schwarze 2130: break;
2131: case '\0':
2132: ++ep;
2133: break;
2134: default:
2135: ep += 2;
2136: break;
1.197 schwarze 2137: }
1.177 schwarze 2138: }
1.318 schwarze 2139:
2140: /*
2141: * Fully handle known macros when they are structurally
2142: * required or when the conditional evaluated to true.
2143: */
2144:
2145: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.340 schwarze 2146: irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
2147: (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
2148: rr ? ROFF_CONT : ROFF_IGN;
2149: return irc;
1.82 kristaps 2150: }
2151:
1.340 schwarze 2152: static int
1.82 kristaps 2153: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2154: {
1.140 kristaps 2155: char *ep;
1.340 schwarze 2156: int endloop, irc, rr;
1.82 kristaps 2157:
1.340 schwarze 2158: irc = ROFF_IGN;
1.82 kristaps 2159: rr = r->last->rule;
1.340 schwarze 2160: endloop = tok != ROFF_while ? ROFF_IGN :
2161: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2162: if (roffnode_cleanscope(r))
2163: irc |= endloop;
1.82 kristaps 2164:
1.343 schwarze 2165: /*
2166: * If `\}' occurs on a text line with neither preceding
2167: * nor following characters, drop the line completely.
2168: */
2169:
1.238 schwarze 2170: ep = buf->buf + pos;
1.343 schwarze 2171: if (strcmp(ep, "\\}") == 0)
2172: rr = 0;
2173:
2174: /*
2175: * The closing delimiter `\}' rewinds the conditional scope
2176: * but is otherwise ignored when interpreting the line.
2177: */
2178:
1.238 schwarze 2179: while ((ep = strchr(ep, '\\')) != NULL) {
1.343 schwarze 2180: switch (ep[1]) {
2181: case '}':
2182: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2183: if (roff_ccond(r, ln, ep - buf->buf))
1.340 schwarze 2184: irc |= endloop;
1.343 schwarze 2185: break;
2186: case '\0':
2187: ++ep;
2188: break;
2189: default:
2190: ep += 2;
2191: break;
1.197 schwarze 2192: }
1.78 kristaps 2193: }
1.340 schwarze 2194: if (rr)
2195: irc |= ROFF_CONT;
2196: return irc;
1.74 kristaps 2197: }
2198:
1.266 schwarze 2199: /* --- handling of numeric and conditional expressions -------------------- */
2200:
1.204 schwarze 2201: /*
2202: * Parse a single signed integer number. Stop at the first non-digit.
2203: * If there is at least one digit, return success and advance the
2204: * parse point, else return failure and let the parse point unchanged.
2205: * Ignore overflows, treat them just like the C language.
2206: */
1.184 schwarze 2207: static int
1.261 schwarze 2208: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2209: {
1.261 schwarze 2210: int myres, scaled, n, p;
1.206 schwarze 2211:
2212: if (NULL == res)
2213: res = &myres;
1.184 schwarze 2214:
2215: p = *pos;
2216: n = v[p] == '-';
1.261 schwarze 2217: if (n || v[p] == '+')
1.184 schwarze 2218: p++;
2219:
1.261 schwarze 2220: if (flags & ROFFNUM_WHITE)
2221: while (isspace((unsigned char)v[p]))
2222: p++;
2223:
1.184 schwarze 2224: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2225: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2226: if (p == *pos + n)
2227: return 0;
2228:
2229: if (n)
2230: *res = -*res;
2231:
1.254 schwarze 2232: /* Each number may be followed by one optional scaling unit. */
2233:
2234: switch (v[p]) {
2235: case 'f':
1.261 schwarze 2236: scaled = *res * 65536;
1.254 schwarze 2237: break;
2238: case 'i':
1.261 schwarze 2239: scaled = *res * 240;
1.254 schwarze 2240: break;
2241: case 'c':
1.261 schwarze 2242: scaled = *res * 240 / 2.54;
1.254 schwarze 2243: break;
2244: case 'v':
2245: case 'P':
1.261 schwarze 2246: scaled = *res * 40;
1.254 schwarze 2247: break;
2248: case 'm':
2249: case 'n':
1.261 schwarze 2250: scaled = *res * 24;
1.254 schwarze 2251: break;
2252: case 'p':
1.261 schwarze 2253: scaled = *res * 10 / 3;
1.254 schwarze 2254: break;
2255: case 'u':
1.261 schwarze 2256: scaled = *res;
1.254 schwarze 2257: break;
2258: case 'M':
1.261 schwarze 2259: scaled = *res * 6 / 25;
1.254 schwarze 2260: break;
2261: default:
1.261 schwarze 2262: scaled = *res;
1.254 schwarze 2263: p--;
2264: break;
2265: }
1.261 schwarze 2266: if (flags & ROFFNUM_SCALE)
2267: *res = scaled;
1.254 schwarze 2268:
2269: *pos = p + 1;
1.277 schwarze 2270: return 1;
1.184 schwarze 2271: }
2272:
1.198 schwarze 2273: /*
2274: * Evaluate a string comparison condition.
2275: * The first character is the delimiter.
2276: * Succeed if the string up to its second occurrence
2277: * matches the string up to its third occurence.
2278: * Advance the cursor after the third occurrence
2279: * or lacking that, to the end of the line.
2280: */
2281: static int
2282: roff_evalstrcond(const char *v, int *pos)
2283: {
2284: const char *s1, *s2, *s3;
2285: int match;
2286:
2287: match = 0;
2288: s1 = v + *pos; /* initial delimiter */
2289: s2 = s1 + 1; /* for scanning the first string */
2290: s3 = strchr(s2, *s1); /* for scanning the second string */
2291:
2292: if (NULL == s3) /* found no middle delimiter */
2293: goto out;
2294:
2295: while ('\0' != *++s3) {
2296: if (*s2 != *s3) { /* mismatch */
2297: s3 = strchr(s3, *s1);
2298: break;
2299: }
2300: if (*s3 == *s1) { /* found the final delimiter */
2301: match = 1;
2302: break;
2303: }
2304: s2++;
2305: }
2306:
2307: out:
2308: if (NULL == s3)
2309: s3 = strchr(s2, '\0');
1.242 schwarze 2310: else if (*s3 != '\0')
1.198 schwarze 2311: s3++;
2312: *pos = s3 - v;
1.277 schwarze 2313: return match;
1.198 schwarze 2314: }
2315:
1.204 schwarze 2316: /*
2317: * Evaluate an optionally negated single character, numerical,
2318: * or string condition.
2319: */
1.198 schwarze 2320: static int
1.271 schwarze 2321: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2322: {
1.336 schwarze 2323: const char *start, *end;
2324: char *cp, *name;
2325: size_t sz;
2326: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2327:
1.198 schwarze 2328: if ('!' == v[*pos]) {
2329: wanttrue = 0;
2330: (*pos)++;
2331: } else
2332: wanttrue = 1;
2333:
1.88 kristaps 2334: switch (v[*pos]) {
1.240 schwarze 2335: case '\0':
1.277 schwarze 2336: return 0;
1.207 schwarze 2337: case 'n':
2338: case 'o':
1.88 kristaps 2339: (*pos)++;
1.277 schwarze 2340: return wanttrue;
1.207 schwarze 2341: case 'e':
2342: case 't':
1.239 schwarze 2343: case 'v':
1.88 kristaps 2344: (*pos)++;
1.277 schwarze 2345: return !wanttrue;
1.336 schwarze 2346: case 'c':
2347: do {
2348: (*pos)++;
2349: } while (v[*pos] == ' ');
2350:
2351: /*
2352: * Quirk for groff compatibility:
2353: * The horizontal tab is neither available nor unavailable.
2354: */
2355:
2356: if (v[*pos] == '\t') {
2357: (*pos)++;
2358: return 0;
2359: }
2360:
2361: /* Printable ASCII characters are available. */
2362:
2363: if (v[*pos] != '\\') {
2364: (*pos)++;
2365: return wanttrue;
2366: }
2367:
2368: end = v + ++*pos;
2369: switch (mandoc_escape(&end, &start, &len)) {
2370: case ESCAPE_SPECIAL:
2371: istrue = mchars_spec2cp(start, len) != -1;
2372: break;
2373: case ESCAPE_UNICODE:
2374: istrue = 1;
2375: break;
2376: case ESCAPE_NUMBERED:
2377: istrue = mchars_num2char(start, len) != -1;
2378: break;
2379: default:
2380: istrue = !wanttrue;
2381: break;
2382: }
2383: *pos = end - v;
2384: return istrue == wanttrue;
1.310 schwarze 2385: case 'd':
1.271 schwarze 2386: case 'r':
1.310 schwarze 2387: cp = v + *pos + 1;
2388: while (*cp == ' ')
2389: cp++;
2390: name = cp;
2391: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2392: if (sz == 0)
2393: istrue = 0;
2394: else if (v[*pos] == 'r')
2395: istrue = roff_hasregn(r, name, sz);
2396: else {
2397: deftype = ROFFDEF_ANY;
2398: roff_getstrn(r, name, sz, &deftype);
2399: istrue = !!deftype;
2400: }
1.271 schwarze 2401: *pos = cp - v;
1.310 schwarze 2402: return istrue == wanttrue;
1.88 kristaps 2403: default:
2404: break;
2405: }
2406:
1.241 schwarze 2407: savepos = *pos;
1.261 schwarze 2408: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2409: return (number > 0) == wanttrue;
1.241 schwarze 2410: else if (*pos == savepos)
1.277 schwarze 2411: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2412: else
1.277 schwarze 2413: return 0;
1.88 kristaps 2414: }
2415:
1.340 schwarze 2416: static int
1.103 kristaps 2417: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2418: {
1.123 schwarze 2419:
1.277 schwarze 2420: return ROFF_IGN;
1.89 kristaps 2421: }
2422:
1.340 schwarze 2423: static int
1.251 schwarze 2424: roff_insec(ROFF_ARGS)
2425: {
2426:
2427: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2428: ln, ppos, roff_name[tok]);
1.277 schwarze 2429: return ROFF_IGN;
1.251 schwarze 2430: }
2431:
1.340 schwarze 2432: static int
1.251 schwarze 2433: roff_unsupp(ROFF_ARGS)
2434: {
2435:
2436: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2437: ln, ppos, roff_name[tok]);
1.277 schwarze 2438: return ROFF_IGN;
1.251 schwarze 2439: }
2440:
1.340 schwarze 2441: static int
1.82 kristaps 2442: roff_cond(ROFF_ARGS)
1.74 kristaps 2443: {
1.340 schwarze 2444: int irc;
1.173 schwarze 2445:
2446: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2447:
1.207 schwarze 2448: /*
1.134 kristaps 2449: * An `.el' has no conditional body: it will consume the value
2450: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2451: * defaults to DENY.
1.134 kristaps 2452: *
2453: * If we're not an `el', however, then evaluate the conditional.
2454: */
1.133 kristaps 2455:
1.238 schwarze 2456: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2457: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2458: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2459:
1.134 kristaps 2460: /*
2461: * An if-else will put the NEGATION of the current evaluated
2462: * conditional into the stack of rules.
2463: */
2464:
1.238 schwarze 2465: if (tok == ROFF_ie) {
1.223 schwarze 2466: if (r->rstackpos + 1 == r->rstacksz) {
2467: r->rstacksz += 16;
2468: r->rstack = mandoc_reallocarray(r->rstack,
2469: r->rstacksz, sizeof(int));
1.134 kristaps 2470: }
1.198 schwarze 2471: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2472: }
1.88 kristaps 2473:
2474: /* If the parent has false as its rule, then so do we. */
2475:
1.198 schwarze 2476: if (r->last->parent && !r->last->parent->rule)
2477: r->last->rule = 0;
1.88 kristaps 2478:
2479: /*
1.173 schwarze 2480: * Determine scope.
2481: * If there is nothing on the line after the conditional,
2482: * not even whitespace, use next-line scope.
1.340 schwarze 2483: * Except that .while does not support next-line scope.
1.88 kristaps 2484: */
1.74 kristaps 2485:
1.340 schwarze 2486: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2487: r->last->endspan = 2;
2488: goto out;
2489: }
2490:
1.238 schwarze 2491: while (buf->buf[pos] == ' ')
1.173 schwarze 2492: pos++;
2493:
2494: /* An opening brace requests multiline scope. */
1.75 kristaps 2495:
1.238 schwarze 2496: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2497: r->last->endspan = -1;
2498: pos += 2;
1.272 schwarze 2499: while (buf->buf[pos] == ' ')
2500: pos++;
1.173 schwarze 2501: goto out;
1.207 schwarze 2502: }
1.74 kristaps 2503:
1.77 kristaps 2504: /*
1.173 schwarze 2505: * Anything else following the conditional causes
2506: * single-line scope. Warn if the scope contains
2507: * nothing but trailing whitespace.
1.77 kristaps 2508: */
2509:
1.238 schwarze 2510: if (buf->buf[pos] == '\0')
1.216 schwarze 2511: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2512: ln, ppos, roff_name[tok]);
1.77 kristaps 2513:
1.173 schwarze 2514: r->last->endspan = 1;
1.74 kristaps 2515:
1.173 schwarze 2516: out:
1.75 kristaps 2517: *offs = pos;
1.340 schwarze 2518: irc = ROFF_RERUN;
2519: if (tok == ROFF_while)
2520: irc |= ROFF_WHILE;
2521: return irc;
1.83 schwarze 2522: }
2523:
1.340 schwarze 2524: static int
1.92 schwarze 2525: roff_ds(ROFF_ARGS)
2526: {
1.212 schwarze 2527: char *string;
2528: const char *name;
2529: size_t namesz;
1.96 kristaps 2530:
1.251 schwarze 2531: /* Ignore groff compatibility mode for now. */
2532:
2533: if (tok == ROFF_ds1)
2534: tok = ROFF_ds;
2535: else if (tok == ROFF_as1)
2536: tok = ROFF_as;
2537:
1.96 kristaps 2538: /*
1.212 schwarze 2539: * The first word is the name of the string.
2540: * If it is empty or terminated by an escape sequence,
2541: * abort the `ds' request without defining anything.
1.96 kristaps 2542: */
1.92 schwarze 2543:
1.238 schwarze 2544: name = string = buf->buf + pos;
2545: if (*name == '\0')
1.277 schwarze 2546: return ROFF_IGN;
1.92 schwarze 2547:
1.212 schwarze 2548: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2549: if (name[namesz] == '\\')
1.277 schwarze 2550: return ROFF_IGN;
1.212 schwarze 2551:
2552: /* Read past the initial double-quote, if any. */
1.238 schwarze 2553: if (*string == '"')
1.92 schwarze 2554: string++;
2555:
1.96 kristaps 2556: /* The rest is the value. */
1.212 schwarze 2557: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2558: ROFF_as == tok);
1.311 schwarze 2559: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2560: return ROFF_IGN;
1.92 schwarze 2561: }
2562:
1.204 schwarze 2563: /*
2564: * Parse a single operator, one or two characters long.
2565: * If the operator is recognized, return success and advance the
2566: * parse point, else return failure and let the parse point unchanged.
2567: */
2568: static int
2569: roff_getop(const char *v, int *pos, char *res)
2570: {
2571:
2572: *res = v[*pos];
2573:
2574: switch (*res) {
1.207 schwarze 2575: case '+':
2576: case '-':
2577: case '*':
2578: case '/':
2579: case '%':
2580: case '&':
2581: case ':':
1.204 schwarze 2582: break;
2583: case '<':
2584: switch (v[*pos + 1]) {
1.207 schwarze 2585: case '=':
1.204 schwarze 2586: *res = 'l';
2587: (*pos)++;
2588: break;
1.207 schwarze 2589: case '>':
1.204 schwarze 2590: *res = '!';
2591: (*pos)++;
2592: break;
1.207 schwarze 2593: case '?':
1.204 schwarze 2594: *res = 'i';
2595: (*pos)++;
2596: break;
2597: default:
2598: break;
2599: }
2600: break;
2601: case '>':
2602: switch (v[*pos + 1]) {
1.207 schwarze 2603: case '=':
1.204 schwarze 2604: *res = 'g';
2605: (*pos)++;
2606: break;
1.207 schwarze 2607: case '?':
1.204 schwarze 2608: *res = 'a';
2609: (*pos)++;
2610: break;
2611: default:
2612: break;
2613: }
2614: break;
2615: case '=':
2616: if ('=' == v[*pos + 1])
2617: (*pos)++;
2618: break;
2619: default:
1.277 schwarze 2620: return 0;
1.204 schwarze 2621: }
2622: (*pos)++;
2623:
1.277 schwarze 2624: return *res;
1.204 schwarze 2625: }
2626:
2627: /*
2628: * Evaluate either a parenthesized numeric expression
2629: * or a single signed integer number.
2630: */
2631: static int
1.235 schwarze 2632: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2633: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2634: {
2635:
2636: if ('(' != v[*pos])
1.277 schwarze 2637: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2638:
2639: (*pos)++;
1.261 schwarze 2640: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2641: return 0;
1.204 schwarze 2642:
1.206 schwarze 2643: /*
2644: * Omission of the closing parenthesis
2645: * is an error in validation mode,
2646: * but ignored in evaluation mode.
2647: */
2648:
1.204 schwarze 2649: if (')' == v[*pos])
2650: (*pos)++;
1.206 schwarze 2651: else if (NULL == res)
1.277 schwarze 2652: return 0;
1.204 schwarze 2653:
1.277 schwarze 2654: return 1;
1.204 schwarze 2655: }
2656:
2657: /*
2658: * Evaluate a complete numeric expression.
2659: * Proceed left to right, there is no concept of precedence.
2660: */
2661: static int
1.235 schwarze 2662: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2663: int *pos, int *res, int flags)
1.204 schwarze 2664: {
2665: int mypos, operand2;
2666: char operator;
2667:
2668: if (NULL == pos) {
2669: mypos = 0;
2670: pos = &mypos;
2671: }
2672:
1.261 schwarze 2673: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2674: while (isspace((unsigned char)v[*pos]))
2675: (*pos)++;
2676:
1.261 schwarze 2677: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2678: return 0;
1.204 schwarze 2679:
2680: while (1) {
1.261 schwarze 2681: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2682: while (isspace((unsigned char)v[*pos]))
2683: (*pos)++;
2684:
2685: if ( ! roff_getop(v, pos, &operator))
2686: break;
2687:
1.261 schwarze 2688: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2689: while (isspace((unsigned char)v[*pos]))
2690: (*pos)++;
2691:
1.261 schwarze 2692: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2693: return 0;
1.204 schwarze 2694:
1.261 schwarze 2695: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2696: while (isspace((unsigned char)v[*pos]))
2697: (*pos)++;
1.206 schwarze 2698:
2699: if (NULL == res)
2700: continue;
1.204 schwarze 2701:
2702: switch (operator) {
1.207 schwarze 2703: case '+':
1.204 schwarze 2704: *res += operand2;
2705: break;
1.207 schwarze 2706: case '-':
1.204 schwarze 2707: *res -= operand2;
2708: break;
1.207 schwarze 2709: case '*':
1.204 schwarze 2710: *res *= operand2;
2711: break;
1.207 schwarze 2712: case '/':
1.244 schwarze 2713: if (operand2 == 0) {
1.235 schwarze 2714: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2715: r->parse, ln, *pos, v);
2716: *res = 0;
2717: break;
2718: }
1.204 schwarze 2719: *res /= operand2;
2720: break;
1.207 schwarze 2721: case '%':
1.244 schwarze 2722: if (operand2 == 0) {
2723: mandoc_msg(MANDOCERR_DIVZERO,
2724: r->parse, ln, *pos, v);
2725: *res = 0;
2726: break;
2727: }
1.204 schwarze 2728: *res %= operand2;
2729: break;
1.207 schwarze 2730: case '<':
1.204 schwarze 2731: *res = *res < operand2;
2732: break;
1.207 schwarze 2733: case '>':
1.204 schwarze 2734: *res = *res > operand2;
2735: break;
1.207 schwarze 2736: case 'l':
1.204 schwarze 2737: *res = *res <= operand2;
2738: break;
1.207 schwarze 2739: case 'g':
1.204 schwarze 2740: *res = *res >= operand2;
2741: break;
1.207 schwarze 2742: case '=':
1.204 schwarze 2743: *res = *res == operand2;
2744: break;
1.207 schwarze 2745: case '!':
1.204 schwarze 2746: *res = *res != operand2;
2747: break;
1.207 schwarze 2748: case '&':
1.204 schwarze 2749: *res = *res && operand2;
2750: break;
1.207 schwarze 2751: case ':':
1.204 schwarze 2752: *res = *res || operand2;
2753: break;
1.207 schwarze 2754: case 'i':
1.204 schwarze 2755: if (operand2 < *res)
2756: *res = operand2;
2757: break;
1.207 schwarze 2758: case 'a':
1.204 schwarze 2759: if (operand2 > *res)
2760: *res = operand2;
2761: break;
2762: default:
2763: abort();
2764: }
2765: }
1.277 schwarze 2766: return 1;
1.204 schwarze 2767: }
2768:
1.266 schwarze 2769: /* --- register management ------------------------------------------------ */
2770:
1.180 schwarze 2771: void
1.187 schwarze 2772: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2773: {
1.327 schwarze 2774: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2775: }
2776:
2777: static void
2778: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2779: int val, char sign, int step)
1.326 schwarze 2780: {
1.180 schwarze 2781: struct roffreg *reg;
2782:
2783: /* Search for an existing register with the same name. */
2784: reg = r->regtab;
2785:
1.326 schwarze 2786: while (reg != NULL && (reg->key.sz != len ||
2787: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 2788: reg = reg->next;
1.147 kristaps 2789:
1.180 schwarze 2790: if (NULL == reg) {
2791: /* Create a new register. */
2792: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 2793: reg->key.p = mandoc_strndup(name, len);
2794: reg->key.sz = len;
1.187 schwarze 2795: reg->val = 0;
1.327 schwarze 2796: reg->step = 0;
1.180 schwarze 2797: reg->next = r->regtab;
2798: r->regtab = reg;
2799: }
2800:
1.187 schwarze 2801: if ('+' == sign)
2802: reg->val += val;
2803: else if ('-' == sign)
2804: reg->val -= val;
2805: else
2806: reg->val = val;
1.327 schwarze 2807: if (step != INT_MIN)
2808: reg->step = step;
1.147 kristaps 2809: }
2810:
1.192 schwarze 2811: /*
2812: * Handle some predefined read-only number registers.
2813: * For now, return -1 if the requested register is not predefined;
2814: * in case a predefined read-only register having the value -1
2815: * were to turn up, another special value would have to be chosen.
2816: */
2817: static int
1.273 schwarze 2818: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2819: {
2820:
2821: switch (*name) {
1.273 schwarze 2822: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 2823: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 2824: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2825: return 0;
1.207 schwarze 2826: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2827: return 1;
1.207 schwarze 2828: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2829: return 24;
1.207 schwarze 2830: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2831: return 0;
1.207 schwarze 2832: case 'T': /* Some output device is always defined. */
1.277 schwarze 2833: return 1;
1.207 schwarze 2834: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2835: return 40;
1.192 schwarze 2836: default:
1.277 schwarze 2837: return -1;
1.192 schwarze 2838: }
2839: }
2840:
1.181 schwarze 2841: int
1.326 schwarze 2842: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 2843: {
1.327 schwarze 2844: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 2845: }
2846:
2847: static int
1.327 schwarze 2848: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 2849: {
2850: struct roffreg *reg;
1.192 schwarze 2851: int val;
2852:
2853: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2854: val = roff_getregro(r, name + 1);
1.192 schwarze 2855: if (-1 != val)
1.277 schwarze 2856: return val;
1.192 schwarze 2857: }
1.181 schwarze 2858:
1.327 schwarze 2859: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 2860: if (len == reg->key.sz &&
1.327 schwarze 2861: 0 == strncmp(name, reg->key.p, len)) {
2862: switch (sign) {
2863: case '+':
2864: reg->val += reg->step;
2865: break;
2866: case '-':
2867: reg->val -= reg->step;
2868: break;
2869: default:
2870: break;
2871: }
1.277 schwarze 2872: return reg->val;
1.327 schwarze 2873: }
2874: }
1.271 schwarze 2875:
1.327 schwarze 2876: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 2877: return 0;
1.271 schwarze 2878: }
2879:
2880: static int
2881: roff_hasregn(const struct roff *r, const char *name, size_t len)
2882: {
2883: struct roffreg *reg;
2884: int val;
2885:
2886: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2887: val = roff_getregro(r, name + 1);
1.271 schwarze 2888: if (-1 != val)
1.277 schwarze 2889: return 1;
1.271 schwarze 2890: }
2891:
2892: for (reg = r->regtab; reg; reg = reg->next)
2893: if (len == reg->key.sz &&
2894: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2895: return 1;
1.147 kristaps 2896:
1.277 schwarze 2897: return 0;
1.147 kristaps 2898: }
2899:
1.180 schwarze 2900: static void
2901: roff_freereg(struct roffreg *reg)
1.147 kristaps 2902: {
1.180 schwarze 2903: struct roffreg *old_reg;
1.147 kristaps 2904:
1.180 schwarze 2905: while (NULL != reg) {
2906: free(reg->key.p);
2907: old_reg = reg;
2908: reg = reg->next;
2909: free(old_reg);
2910: }
1.147 kristaps 2911: }
1.92 schwarze 2912:
1.340 schwarze 2913: static int
1.89 kristaps 2914: roff_nr(ROFF_ARGS)
1.83 schwarze 2915: {
1.327 schwarze 2916: char *key, *val, *step;
1.212 schwarze 2917: size_t keysz;
1.327 schwarze 2918: int iv, is, len;
1.187 schwarze 2919: char sign;
1.89 kristaps 2920:
1.238 schwarze 2921: key = val = buf->buf + pos;
2922: if (*key == '\0')
1.277 schwarze 2923: return ROFF_IGN;
1.212 schwarze 2924:
2925: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2926: if (key[keysz] == '\\')
1.277 schwarze 2927: return ROFF_IGN;
1.89 kristaps 2928:
1.187 schwarze 2929: sign = *val;
1.238 schwarze 2930: if (sign == '+' || sign == '-')
1.187 schwarze 2931: val++;
2932:
1.327 schwarze 2933: len = 0;
2934: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2935: return ROFF_IGN;
2936:
2937: step = val + len;
2938: while (isspace((unsigned char)*step))
2939: step++;
2940: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2941: is = INT_MIN;
1.109 kristaps 2942:
1.327 schwarze 2943: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 2944: return ROFF_IGN;
1.203 schwarze 2945: }
2946:
1.340 schwarze 2947: static int
1.203 schwarze 2948: roff_rr(ROFF_ARGS)
2949: {
2950: struct roffreg *reg, **prev;
1.212 schwarze 2951: char *name, *cp;
2952: size_t namesz;
1.203 schwarze 2953:
1.238 schwarze 2954: name = cp = buf->buf + pos;
2955: if (*name == '\0')
1.277 schwarze 2956: return ROFF_IGN;
1.212 schwarze 2957: namesz = roff_getname(r, &cp, ln, pos);
2958: name[namesz] = '\0';
1.203 schwarze 2959:
2960: prev = &r->regtab;
2961: while (1) {
2962: reg = *prev;
1.238 schwarze 2963: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2964: break;
2965: prev = ®->next;
2966: }
1.238 schwarze 2967: if (reg != NULL) {
1.203 schwarze 2968: *prev = reg->next;
2969: free(reg->key.p);
2970: free(reg);
2971: }
1.277 schwarze 2972: return ROFF_IGN;
1.122 schwarze 2973: }
2974:
1.266 schwarze 2975: /* --- handler functions for roff requests -------------------------------- */
2976:
1.340 schwarze 2977: static int
1.122 schwarze 2978: roff_rm(ROFF_ARGS)
2979: {
2980: const char *name;
2981: char *cp;
1.212 schwarze 2982: size_t namesz;
1.122 schwarze 2983:
1.238 schwarze 2984: cp = buf->buf + pos;
2985: while (*cp != '\0') {
1.212 schwarze 2986: name = cp;
1.238 schwarze 2987: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2988: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 2989: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 2990: if (name[namesz] == '\\')
1.212 schwarze 2991: break;
1.122 schwarze 2992: }
1.277 schwarze 2993: return ROFF_IGN;
1.178 schwarze 2994: }
2995:
1.340 schwarze 2996: static int
1.178 schwarze 2997: roff_it(ROFF_ARGS)
2998: {
2999: int iv;
3000:
3001: /* Parse the number of lines. */
1.261 schwarze 3002:
3003: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 3004: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 3005: ln, ppos, buf->buf + 1);
1.277 schwarze 3006: return ROFF_IGN;
1.178 schwarze 3007: }
3008:
1.262 schwarze 3009: while (isspace((unsigned char)buf->buf[pos]))
3010: pos++;
3011:
3012: /*
3013: * Arm the input line trap.
3014: * Special-casing "an-trap" is an ugly workaround to cope
3015: * with DocBook stupidly fiddling with man(7) internals.
3016: */
1.261 schwarze 3017:
1.178 schwarze 3018: roffit_lines = iv;
1.262 schwarze 3019: roffit_macro = mandoc_strdup(iv != 1 ||
3020: strcmp(buf->buf + pos, "an-trap") ?
3021: buf->buf + pos : "br");
1.277 schwarze 3022: return ROFF_IGN;
1.175 schwarze 3023: }
3024:
1.340 schwarze 3025: static int
1.175 schwarze 3026: roff_Dd(ROFF_ARGS)
3027: {
1.315 schwarze 3028: int mask;
3029: enum roff_tok t, te;
1.227 schwarze 3030:
1.315 schwarze 3031: switch (tok) {
3032: case ROFF_Dd:
3033: tok = MDOC_Dd;
3034: te = MDOC_MAX;
3035: if (r->format == 0)
3036: r->format = MPARSE_MDOC;
3037: mask = MPARSE_MDOC | MPARSE_QUICK;
3038: break;
3039: case ROFF_TH:
3040: tok = MAN_TH;
3041: te = MAN_MAX;
3042: if (r->format == 0)
3043: r->format = MPARSE_MAN;
3044: mask = MPARSE_QUICK;
3045: break;
3046: default:
3047: abort();
3048: }
3049: if ((r->options & mask) == 0)
3050: for (t = tok; t < te; t++)
3051: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3052: return ROFF_CONT;
1.109 kristaps 3053: }
3054:
1.340 schwarze 3055: static int
1.109 kristaps 3056: roff_TE(ROFF_ARGS)
3057: {
1.321 schwarze 3058: if (r->tbl == NULL) {
1.221 schwarze 3059: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3060: ln, ppos, "TE");
1.321 schwarze 3061: return ROFF_IGN;
3062: }
3063: if (tbl_end(r->tbl) == 0) {
3064: r->tbl = NULL;
1.258 schwarze 3065: free(buf->buf);
3066: buf->buf = mandoc_strdup(".sp");
3067: buf->sz = 4;
1.329 schwarze 3068: *offs = 0;
1.277 schwarze 3069: return ROFF_REPARSE;
1.258 schwarze 3070: }
1.321 schwarze 3071: r->tbl = NULL;
1.277 schwarze 3072: return ROFF_IGN;
1.112 kristaps 3073: }
3074:
1.340 schwarze 3075: static int
1.112 kristaps 3076: roff_T_(ROFF_ARGS)
3077: {
3078:
3079: if (NULL == r->tbl)
1.221 schwarze 3080: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3081: ln, ppos, "T&");
1.112 kristaps 3082: else
1.296 schwarze 3083: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3084:
1.277 schwarze 3085: return ROFF_IGN;
1.109 kristaps 3086: }
3087:
1.230 schwarze 3088: /*
3089: * Handle in-line equation delimiters.
3090: */
1.340 schwarze 3091: static int
1.238 schwarze 3092: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3093: {
1.233 schwarze 3094: char *cp1, *cp2;
3095: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3096:
1.230 schwarze 3097: /*
3098: * Outside equations, look for an opening delimiter.
3099: * If we are inside an equation, we already know it is
3100: * in-line, or this function wouldn't have been called;
3101: * so look for a closing delimiter.
3102: */
3103:
1.238 schwarze 3104: cp1 = buf->buf + pos;
1.230 schwarze 3105: cp2 = strchr(cp1, r->eqn == NULL ?
3106: r->last_eqn->odelim : r->last_eqn->cdelim);
3107: if (cp2 == NULL)
1.277 schwarze 3108: return ROFF_CONT;
1.230 schwarze 3109:
1.233 schwarze 3110: *cp2++ = '\0';
3111: bef_pr = bef_nl = aft_nl = aft_pr = "";
3112:
3113: /* Handle preceding text, protecting whitespace. */
3114:
1.238 schwarze 3115: if (*buf->buf != '\0') {
1.233 schwarze 3116: if (r->eqn == NULL)
3117: bef_pr = "\\&";
3118: bef_nl = "\n";
3119: }
3120:
3121: /*
3122: * Prepare replacing the delimiter with an equation macro
3123: * and drop leading white space from the equation.
3124: */
1.230 schwarze 3125:
1.233 schwarze 3126: if (r->eqn == NULL) {
3127: while (*cp2 == ' ')
3128: cp2++;
3129: mac = ".EQ";
3130: } else
3131: mac = ".EN";
3132:
3133: /* Handle following text, protecting whitespace. */
3134:
3135: if (*cp2 != '\0') {
3136: aft_nl = "\n";
3137: if (r->eqn != NULL)
3138: aft_pr = "\\&";
3139: }
3140:
3141: /* Do the actual replacement. */
3142:
1.238 schwarze 3143: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3144: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3145: free(buf->buf);
3146: buf->buf = cp1;
1.230 schwarze 3147:
3148: /* Toggle the in-line state of the eqn subsystem. */
3149:
3150: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3151: return ROFF_REPARSE;
1.151 kristaps 3152: }
3153:
1.340 schwarze 3154: static int
1.235 schwarze 3155: roff_EQ(ROFF_ARGS)
1.125 kristaps 3156: {
1.319 schwarze 3157: struct roff_node *n;
3158:
1.322 schwarze 3159: if (r->man->macroset == MACROSET_MAN)
3160: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3161: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3162: if (ln > r->man->last->line)
3163: n->flags |= NODE_LINE;
3164: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
3165: n->eqn->expectargs = UINT_MAX;
3166: roff_node_append(r->man, n);
3167: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3168:
1.238 schwarze 3169: assert(r->eqn == NULL);
1.319 schwarze 3170: if (r->last_eqn == NULL)
3171: r->last_eqn = eqn_alloc(r->parse);
3172: else
3173: eqn_reset(r->last_eqn);
3174: r->eqn = r->last_eqn;
3175: r->eqn->node = n;
1.151 kristaps 3176:
1.238 schwarze 3177: if (buf->buf[pos] != '\0')
1.235 schwarze 3178: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 3179: ".EQ %s", buf->buf + pos);
1.151 kristaps 3180:
1.277 schwarze 3181: return ROFF_IGN;
1.125 kristaps 3182: }
3183:
1.340 schwarze 3184: static int
1.125 kristaps 3185: roff_EN(ROFF_ARGS)
3186: {
1.319 schwarze 3187: if (r->eqn != NULL) {
3188: eqn_parse(r->eqn);
3189: r->eqn = NULL;
3190: } else
3191: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
3192: if (buf->buf[pos] != '\0')
3193: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3194: "EN %s", buf->buf + pos);
1.277 schwarze 3195: return ROFF_IGN;
1.125 kristaps 3196: }
3197:
1.340 schwarze 3198: static int
1.109 kristaps 3199: roff_TS(ROFF_ARGS)
3200: {
1.321 schwarze 3201: if (r->tbl != NULL) {
1.221 schwarze 3202: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
3203: ln, ppos, "TS breaks TS");
1.321 schwarze 3204: tbl_end(r->tbl);
1.115 kristaps 3205: }
1.321 schwarze 3206: r->tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 3207: if (r->last_tbl)
1.321 schwarze 3208: r->last_tbl->next = r->tbl;
1.113 kristaps 3209: else
1.321 schwarze 3210: r->first_tbl = r->tbl;
3211: r->last_tbl = r->tbl;
1.297 schwarze 3212: return ROFF_IGN;
3213: }
3214:
1.340 schwarze 3215: static int
1.297 schwarze 3216: roff_onearg(ROFF_ARGS)
3217: {
3218: struct roff_node *n;
3219: char *cp;
1.305 schwarze 3220: int npos;
1.297 schwarze 3221:
1.302 schwarze 3222: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3223: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3224: tok == ROFF_ti))
1.302 schwarze 3225: man_breakscope(r->man, tok);
3226:
1.309 schwarze 3227: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3228: r->man->last = roffce_node;
3229: r->man->next = ROFF_NEXT_SIBLING;
3230: }
3231:
1.297 schwarze 3232: roff_elem_alloc(r->man, ln, ppos, tok);
3233: n = r->man->last;
3234:
3235: cp = buf->buf + pos;
3236: if (*cp != '\0') {
3237: while (*cp != '\0' && *cp != ' ')
3238: cp++;
3239: while (*cp == ' ')
3240: *cp++ = '\0';
3241: if (*cp != '\0')
3242: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
3243: r->parse, ln, cp - buf->buf,
3244: "%s ... %s", roff_name[tok], cp);
3245: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3246: }
3247:
1.309 schwarze 3248: if (tok == ROFF_ce || tok == ROFF_rj) {
3249: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3250: roff_word_alloc(r->man, ln, pos, "1");
3251: r->man->last->flags |= NODE_NOSRC;
3252: }
3253: npos = 0;
3254: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3255: &roffce_lines, 0) == 0) {
3256: mandoc_vmsg(MANDOCERR_CE_NONUM,
3257: r->parse, ln, pos, "ce %s", buf->buf + pos);
3258: roffce_lines = 1;
3259: }
3260: if (roffce_lines < 1) {
3261: r->man->last = r->man->last->parent;
3262: roffce_node = NULL;
3263: roffce_lines = 0;
3264: } else
3265: roffce_node = r->man->last->parent;
3266: } else {
3267: n->flags |= NODE_VALID | NODE_ENDED;
3268: r->man->last = n;
3269: }
3270: n->flags |= NODE_LINE;
1.300 schwarze 3271: r->man->next = ROFF_NEXT_SIBLING;
3272: return ROFF_IGN;
3273: }
3274:
1.340 schwarze 3275: static int
1.300 schwarze 3276: roff_manyarg(ROFF_ARGS)
3277: {
3278: struct roff_node *n;
3279: char *sp, *ep;
3280:
3281: roff_elem_alloc(r->man, ln, ppos, tok);
3282: n = r->man->last;
3283:
3284: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3285: while (*ep != '\0' && *ep != ' ')
3286: ep++;
3287: while (*ep == ' ')
3288: *ep++ = '\0';
3289: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3290: }
3291:
3292: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3293: r->man->last = n;
3294: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3295: return ROFF_IGN;
1.251 schwarze 3296: }
3297:
1.340 schwarze 3298: static int
1.311 schwarze 3299: roff_als(ROFF_ARGS)
3300: {
3301: char *oldn, *newn, *end, *value;
3302: size_t oldsz, newsz, valsz;
3303:
3304: newn = oldn = buf->buf + pos;
3305: if (*newn == '\0')
3306: return ROFF_IGN;
3307:
3308: newsz = roff_getname(r, &oldn, ln, pos);
3309: if (newn[newsz] == '\\' || *oldn == '\0')
3310: return ROFF_IGN;
3311:
3312: end = oldn;
3313: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3314: if (oldsz == 0)
3315: return ROFF_IGN;
3316:
1.338 schwarze 3317: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3318: (int)oldsz, oldn);
1.311 schwarze 3319: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3320: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3321: free(value);
3322: return ROFF_IGN;
3323: }
3324:
1.340 schwarze 3325: static int
1.296 schwarze 3326: roff_br(ROFF_ARGS)
1.251 schwarze 3327: {
1.302 schwarze 3328: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3329: man_breakscope(r->man, ROFF_br);
1.296 schwarze 3330: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3331: if (buf->buf[pos] != '\0')
3332: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3333: "%s %s", roff_name[tok], buf->buf + pos);
3334: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3335: r->man->next = ROFF_NEXT_SIBLING;
3336: return ROFF_IGN;
1.92 schwarze 3337: }
3338:
1.340 schwarze 3339: static int
1.174 kristaps 3340: roff_cc(ROFF_ARGS)
3341: {
3342: const char *p;
3343:
1.238 schwarze 3344: p = buf->buf + pos;
1.174 kristaps 3345:
1.238 schwarze 3346: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3347: r->control = '\0';
1.174 kristaps 3348:
1.238 schwarze 3349: if (*p != '\0')
1.260 schwarze 3350: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3351: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3352:
1.341 schwarze 3353: return ROFF_IGN;
3354: }
3355:
3356: static int
3357: roff_char(ROFF_ARGS)
3358: {
3359: const char *p, *kp, *vp;
3360: size_t ksz, vsz;
3361: int font;
3362:
3363: /* Parse the character to be replaced. */
3364:
3365: kp = buf->buf + pos;
3366: p = kp + 1;
3367: if (*kp == '\0' || (*kp == '\\' &&
3368: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3369: (*p != ' ' && *p != '\0')) {
3370: mandoc_vmsg(MANDOCERR_CHAR_ARG, r->parse,
3371: ln, pos, "char %s", kp);
3372: return ROFF_IGN;
3373: }
3374: ksz = p - kp;
3375: while (*p == ' ')
3376: p++;
3377:
3378: /*
3379: * If the replacement string contains a font escape sequence,
3380: * we have to restore the font at the end.
3381: */
3382:
3383: vp = p;
3384: vsz = strlen(p);
3385: font = 0;
3386: while (*p != '\0') {
3387: if (*p++ != '\\')
3388: continue;
3389: switch (mandoc_escape(&p, NULL, NULL)) {
3390: case ESCAPE_FONT:
3391: case ESCAPE_FONTROMAN:
3392: case ESCAPE_FONTITALIC:
3393: case ESCAPE_FONTBOLD:
3394: case ESCAPE_FONTBI:
1.342 schwarze 3395: case ESCAPE_FONTCW:
1.341 schwarze 3396: case ESCAPE_FONTPREV:
3397: font++;
3398: break;
3399: default:
3400: break;
3401: }
3402: }
3403: if (font > 1)
3404: mandoc_msg(MANDOCERR_CHAR_FONT, r->parse,
3405: ln, vp - buf->buf, vp);
3406:
3407: /*
3408: * Approximate the effect of .char using the .tr tables.
3409: * XXX In groff, .char and .tr interact differently.
3410: */
3411:
3412: if (ksz == 1) {
3413: if (r->xtab == NULL)
3414: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3415: assert((unsigned int)*kp < 128);
3416: free(r->xtab[(int)*kp].p);
3417: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3418: "%s%s", vp, font ? "\fP" : "");
3419: } else {
3420: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3421: if (font)
3422: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3423: }
1.277 schwarze 3424: return ROFF_IGN;
1.174 kristaps 3425: }
3426:
1.340 schwarze 3427: static int
1.303 schwarze 3428: roff_ec(ROFF_ARGS)
3429: {
3430: const char *p;
3431:
3432: p = buf->buf + pos;
3433: if (*p == '\0')
3434: r->escape = '\\';
3435: else {
3436: r->escape = *p;
3437: if (*++p != '\0')
3438: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3439: ln, p - buf->buf, "ec ... %s", p);
3440: }
3441: return ROFF_IGN;
3442: }
3443:
1.340 schwarze 3444: static int
1.303 schwarze 3445: roff_eo(ROFF_ARGS)
3446: {
3447: r->escape = '\0';
3448: if (buf->buf[pos] != '\0')
3449: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3450: ln, pos, "eo %s", buf->buf + pos);
3451: return ROFF_IGN;
1.330 schwarze 3452: }
3453:
1.340 schwarze 3454: static int
1.330 schwarze 3455: roff_nop(ROFF_ARGS)
3456: {
3457: while (buf->buf[pos] == ' ')
3458: pos++;
3459: *offs = pos;
3460: return ROFF_RERUN;
1.303 schwarze 3461: }
3462:
1.340 schwarze 3463: static int
1.164 kristaps 3464: roff_tr(ROFF_ARGS)
3465: {
3466: const char *p, *first, *second;
3467: size_t fsz, ssz;
3468: enum mandoc_esc esc;
3469:
1.238 schwarze 3470: p = buf->buf + pos;
1.164 kristaps 3471:
1.238 schwarze 3472: if (*p == '\0') {
1.260 schwarze 3473: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 3474: return ROFF_IGN;
1.164 kristaps 3475: }
3476:
1.238 schwarze 3477: while (*p != '\0') {
1.164 kristaps 3478: fsz = ssz = 1;
3479:
3480: first = p++;
1.238 schwarze 3481: if (*first == '\\') {
1.164 kristaps 3482: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3483: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3484: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3485: ln, (int)(p - buf->buf), first);
1.277 schwarze 3486: return ROFF_IGN;
1.164 kristaps 3487: }
3488: fsz = (size_t)(p - first);
3489: }
3490:
3491: second = p++;
1.238 schwarze 3492: if (*second == '\\') {
1.164 kristaps 3493: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3494: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3495: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3496: ln, (int)(p - buf->buf), second);
1.277 schwarze 3497: return ROFF_IGN;
1.164 kristaps 3498: }
3499: ssz = (size_t)(p - second);
1.238 schwarze 3500: } else if (*second == '\0') {
1.260 schwarze 3501: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3502: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3503: second = " ";
1.165 kristaps 3504: p--;
1.164 kristaps 3505: }
3506:
1.167 kristaps 3507: if (fsz > 1) {
1.207 schwarze 3508: roff_setstrn(&r->xmbtab, first, fsz,
3509: second, ssz, 0);
1.167 kristaps 3510: continue;
3511: }
3512:
1.238 schwarze 3513: if (r->xtab == NULL)
1.207 schwarze 3514: r->xtab = mandoc_calloc(128,
3515: sizeof(struct roffstr));
1.167 kristaps 3516:
3517: free(r->xtab[(int)*first].p);
3518: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3519: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3520: }
3521:
1.277 schwarze 3522: return ROFF_IGN;
1.164 kristaps 3523: }
3524:
1.339 schwarze 3525: /*
3526: * Implementation of the .return request.
3527: * There is no need to call roff_userret() from here.
3528: * The read module will call that after rewinding the reader stack
3529: * to the place from where the current macro was called.
3530: */
1.340 schwarze 3531: static int
1.339 schwarze 3532: roff_return(ROFF_ARGS)
3533: {
3534: if (r->mstackpos >= 0)
1.340 schwarze 3535: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3536:
3537: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "return");
3538: return ROFF_IGN;
3539: }
3540:
1.340 schwarze 3541: static int
1.306 schwarze 3542: roff_rn(ROFF_ARGS)
3543: {
3544: const char *value;
3545: char *oldn, *newn, *end;
3546: size_t oldsz, newsz;
1.315 schwarze 3547: int deftype;
1.306 schwarze 3548:
3549: oldn = newn = buf->buf + pos;
3550: if (*oldn == '\0')
3551: return ROFF_IGN;
3552:
3553: oldsz = roff_getname(r, &newn, ln, pos);
3554: if (oldn[oldsz] == '\\' || *newn == '\0')
3555: return ROFF_IGN;
3556:
3557: end = newn;
3558: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3559: if (newsz == 0)
3560: return ROFF_IGN;
3561:
1.315 schwarze 3562: deftype = ROFFDEF_ANY;
3563: value = roff_getstrn(r, oldn, oldsz, &deftype);
3564: switch (deftype) {
3565: case ROFFDEF_USER:
1.306 schwarze 3566: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3567: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3568: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3569: break;
3570: case ROFFDEF_PRE:
3571: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3572: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3573: break;
3574: case ROFFDEF_REN:
1.306 schwarze 3575: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3576: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3577: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3578: break;
3579: case ROFFDEF_STD:
1.306 schwarze 3580: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3581: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3582: break;
3583: default:
3584: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3585: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3586: break;
3587: }
1.306 schwarze 3588: return ROFF_IGN;
3589: }
3590:
1.340 schwarze 3591: static int
1.339 schwarze 3592: roff_shift(ROFF_ARGS)
3593: {
3594: struct mctx *ctx;
3595: int levels, i;
3596:
3597: levels = 1;
3598: if (buf->buf[pos] != '\0' &&
3599: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
3600: mandoc_vmsg(MANDOCERR_CE_NONUM, r->parse,
3601: ln, pos, "shift %s", buf->buf + pos);
3602: levels = 1;
3603: }
3604: if (r->mstackpos < 0) {
3605: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "shift");
3606: return ROFF_IGN;
3607: }
3608: ctx = r->mstack + r->mstackpos;
3609: if (levels > ctx->argc) {
3610: mandoc_vmsg(MANDOCERR_SHIFT, r->parse,
3611: ln, pos, "%d, but max is %d", levels, ctx->argc);
3612: levels = ctx->argc;
3613: }
3614: if (levels == 0)
3615: return ROFF_IGN;
3616: for (i = 0; i < levels; i++)
3617: free(ctx->argv[i]);
3618: ctx->argc -= levels;
3619: for (i = 0; i < ctx->argc; i++)
3620: ctx->argv[i] = ctx->argv[i + levels];
3621: return ROFF_IGN;
3622: }
3623:
1.340 schwarze 3624: static int
1.105 kristaps 3625: roff_so(ROFF_ARGS)
3626: {
1.249 schwarze 3627: char *name, *cp;
1.105 kristaps 3628:
1.238 schwarze 3629: name = buf->buf + pos;
1.224 schwarze 3630: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3631:
3632: /*
3633: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3634: * opening anything that's not in our cwd or anything beneath
3635: * it. Thus, explicitly disallow traversing up the file-system
3636: * or using absolute paths.
3637: */
3638:
1.238 schwarze 3639: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3640: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3641: ".so %s", name);
1.249 schwarze 3642: buf->sz = mandoc_asprintf(&cp,
3643: ".sp\nSee the file %s.\n.sp", name) + 1;
3644: free(buf->buf);
3645: buf->buf = cp;
3646: *offs = 0;
1.277 schwarze 3647: return ROFF_REPARSE;
1.105 kristaps 3648: }
3649:
3650: *offs = pos;
1.277 schwarze 3651: return ROFF_SO;
1.105 kristaps 3652: }
1.92 schwarze 3653:
1.266 schwarze 3654: /* --- user defined strings and macros ------------------------------------ */
3655:
1.340 schwarze 3656: static int
1.106 kristaps 3657: roff_userdef(ROFF_ARGS)
1.99 kristaps 3658: {
1.339 schwarze 3659: struct mctx *ctx;
3660: char *arg, *ap, *dst, *src;
3661: size_t sz;
3662:
3663: /* Initialize a new macro stack context. */
3664:
3665: if (++r->mstackpos == r->mstacksz) {
3666: r->mstack = mandoc_recallocarray(r->mstack,
3667: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3668: r->mstacksz += 8;
3669: }
3670: ctx = r->mstack + r->mstackpos;
3671: ctx->argsz = 0;
3672: ctx->argc = 0;
3673: ctx->argv = NULL;
3674:
3675: /*
3676: * Collect pointers to macro argument strings,
3677: * NUL-terminating them and escaping quotes.
3678: */
3679:
3680: src = buf->buf + pos;
3681: while (*src != '\0') {
3682: if (ctx->argc == ctx->argsz) {
3683: ctx->argsz += 8;
3684: ctx->argv = mandoc_reallocarray(ctx->argv,
3685: ctx->argsz, sizeof(*ctx->argv));
3686: }
3687: arg = mandoc_getarg(r->parse, &src, ln, &pos);
3688: sz = 1; /* For the terminating NUL. */
3689: for (ap = arg; *ap != '\0'; ap++)
3690: sz += *ap == '"' ? 4 : 1;
3691: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3692: for (ap = arg; *ap != '\0'; ap++) {
3693: if (*ap == '"') {
3694: memcpy(dst, "\\(dq", 4);
3695: dst += 4;
3696: } else
3697: *dst++ = *ap;
1.106 kristaps 3698: }
1.339 schwarze 3699: *dst = '\0';
1.337 schwarze 3700: }
3701:
1.339 schwarze 3702: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3703:
1.238 schwarze 3704: free(buf->buf);
1.339 schwarze 3705: buf->buf = mandoc_strdup(r->current_string);
3706: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3707: *offs = 0;
1.106 kristaps 3708:
1.277 schwarze 3709: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3710: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3711: }
1.121 schwarze 3712:
1.306 schwarze 3713: /*
3714: * Calling a high-level macro that was renamed with .rn.
3715: * r->current_string has already been set up by roff_parse().
3716: */
1.340 schwarze 3717: static int
1.306 schwarze 3718: roff_renamed(ROFF_ARGS)
3719: {
3720: char *nbuf;
3721:
1.315 schwarze 3722: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3723: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3724: free(buf->buf);
3725: buf->buf = nbuf;
1.329 schwarze 3726: *offs = 0;
1.306 schwarze 3727: return ROFF_CONT;
3728: }
3729:
1.212 schwarze 3730: static size_t
1.121 schwarze 3731: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3732: {
3733: char *name, *cp;
1.212 schwarze 3734: size_t namesz;
1.121 schwarze 3735:
3736: name = *cpp;
3737: if ('\0' == *name)
1.277 schwarze 3738: return 0;
1.121 schwarze 3739:
1.212 schwarze 3740: /* Read until end of name and terminate it with NUL. */
3741: for (cp = name; 1; cp++) {
3742: if ('\0' == *cp || ' ' == *cp) {
3743: namesz = cp - name;
3744: break;
3745: }
1.121 schwarze 3746: if ('\\' != *cp)
3747: continue;
1.215 schwarze 3748: namesz = cp - name;
3749: if ('{' == cp[1] || '}' == cp[1])
3750: break;
1.121 schwarze 3751: cp++;
3752: if ('\\' == *cp)
3753: continue;
1.224 schwarze 3754: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3755: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3756: mandoc_escape((const char **)&cp, NULL, NULL);
3757: break;
1.121 schwarze 3758: }
3759:
3760: /* Read past spaces. */
3761: while (' ' == *cp)
3762: cp++;
3763:
3764: *cpp = cp;
1.277 schwarze 3765: return namesz;
1.121 schwarze 3766: }
3767:
1.106 kristaps 3768: /*
3769: * Store *string into the user-defined string called *name.
3770: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3771: * append == 0: replace mode
3772: * append == 1: single-line append mode
3773: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3774: */
1.94 kristaps 3775: static void
1.106 kristaps 3776: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3777: int append)
1.92 schwarze 3778: {
1.315 schwarze 3779: size_t namesz;
1.164 kristaps 3780:
1.315 schwarze 3781: namesz = strlen(name);
3782: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 3783: string ? strlen(string) : 0, append);
1.315 schwarze 3784: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 3785: }
3786:
3787: static void
1.166 kristaps 3788: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3789: const char *string, size_t stringsz, int append)
1.164 kristaps 3790: {
1.166 kristaps 3791: struct roffkv *n;
1.164 kristaps 3792: char *c;
3793: int i;
3794: size_t oldch, newch;
1.92 schwarze 3795:
1.106 kristaps 3796: /* Search for an existing string with the same name. */
1.164 kristaps 3797: n = *r;
3798:
1.211 schwarze 3799: while (n && (namesz != n->key.sz ||
3800: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3801: n = n->next;
1.94 kristaps 3802:
3803: if (NULL == n) {
1.106 kristaps 3804: /* Create a new string table entry. */
1.166 kristaps 3805: n = mandoc_malloc(sizeof(struct roffkv));
3806: n->key.p = mandoc_strndup(name, namesz);
3807: n->key.sz = namesz;
3808: n->val.p = NULL;
3809: n->val.sz = 0;
1.164 kristaps 3810: n->next = *r;
3811: *r = n;
1.193 schwarze 3812: } else if (0 == append) {
1.166 kristaps 3813: free(n->val.p);
3814: n->val.p = NULL;
3815: n->val.sz = 0;
1.106 kristaps 3816: }
3817:
3818: if (NULL == string)
3819: return;
3820:
3821: /*
3822: * One additional byte for the '\n' in multiline mode,
3823: * and one for the terminating '\0'.
3824: */
1.193 schwarze 3825: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3826:
1.166 kristaps 3827: if (NULL == n->val.p) {
3828: n->val.p = mandoc_malloc(newch);
3829: *n->val.p = '\0';
1.106 kristaps 3830: oldch = 0;
3831: } else {
1.166 kristaps 3832: oldch = n->val.sz;
3833: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3834: }
3835:
3836: /* Skip existing content in the destination buffer. */
1.166 kristaps 3837: c = n->val.p + (int)oldch;
1.106 kristaps 3838:
3839: /* Append new content to the destination buffer. */
1.164 kristaps 3840: i = 0;
3841: while (i < (int)stringsz) {
1.106 kristaps 3842: /*
3843: * Rudimentary roff copy mode:
3844: * Handle escaped backslashes.
3845: */
1.164 kristaps 3846: if ('\\' == string[i] && '\\' == string[i + 1])
3847: i++;
3848: *c++ = string[i++];
1.106 kristaps 3849: }
1.94 kristaps 3850:
1.106 kristaps 3851: /* Append terminating bytes. */
1.193 schwarze 3852: if (1 < append)
1.106 kristaps 3853: *c++ = '\n';
1.163 kristaps 3854:
1.106 kristaps 3855: *c = '\0';
1.166 kristaps 3856: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3857: }
3858:
1.94 kristaps 3859: static const char *
1.325 schwarze 3860: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 3861: int *deftype)
1.92 schwarze 3862: {
1.315 schwarze 3863: const struct roffkv *n;
1.325 schwarze 3864: int found, i;
1.315 schwarze 3865: enum roff_tok tok;
3866:
1.325 schwarze 3867: found = 0;
3868: for (n = r->strtab; n != NULL; n = n->next) {
3869: if (strncmp(name, n->key.p, len) != 0 ||
3870: n->key.p[len] != '\0' || n->val.p == NULL)
3871: continue;
3872: if (*deftype & ROFFDEF_USER) {
3873: *deftype = ROFFDEF_USER;
3874: return n->val.p;
3875: } else {
3876: found = 1;
3877: break;
3878: }
3879: }
3880: for (n = r->rentab; n != NULL; n = n->next) {
3881: if (strncmp(name, n->key.p, len) != 0 ||
3882: n->key.p[len] != '\0' || n->val.p == NULL)
3883: continue;
3884: if (*deftype & ROFFDEF_REN) {
3885: *deftype = ROFFDEF_REN;
3886: return n->val.p;
3887: } else {
3888: found = 1;
3889: break;
1.315 schwarze 3890: }
3891: }
1.325 schwarze 3892: for (i = 0; i < PREDEFS_MAX; i++) {
3893: if (strncmp(name, predefs[i].name, len) != 0 ||
3894: predefs[i].name[len] != '\0')
3895: continue;
3896: if (*deftype & ROFFDEF_PRE) {
3897: *deftype = ROFFDEF_PRE;
3898: return predefs[i].str;
3899: } else {
3900: found = 1;
3901: break;
1.315 schwarze 3902: }
3903: }
1.325 schwarze 3904: if (r->man->macroset != MACROSET_MAN) {
3905: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3906: if (strncmp(name, roff_name[tok], len) != 0 ||
3907: roff_name[tok][len] != '\0')
3908: continue;
3909: if (*deftype & ROFFDEF_STD) {
3910: *deftype = ROFFDEF_STD;
3911: return NULL;
3912: } else {
3913: found = 1;
3914: break;
1.315 schwarze 3915: }
3916: }
3917: }
1.325 schwarze 3918: if (r->man->macroset != MACROSET_MDOC) {
3919: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3920: if (strncmp(name, roff_name[tok], len) != 0 ||
3921: roff_name[tok][len] != '\0')
3922: continue;
3923: if (*deftype & ROFFDEF_STD) {
3924: *deftype = ROFFDEF_STD;
3925: return NULL;
3926: } else {
3927: found = 1;
3928: break;
1.315 schwarze 3929: }
3930: }
1.325 schwarze 3931: }
3932:
3933: if (found == 0 && *deftype != ROFFDEF_ANY) {
3934: if (*deftype & ROFFDEF_REN) {
3935: /*
3936: * This might still be a request,
3937: * so do not treat it as undefined yet.
3938: */
3939: *deftype = ROFFDEF_UNDEF;
3940: return NULL;
1.315 schwarze 3941: }
1.325 schwarze 3942:
3943: /* Using an undefined string defines it to be empty. */
3944:
3945: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3946: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 3947: }
1.325 schwarze 3948:
1.315 schwarze 3949: *deftype = 0;
1.277 schwarze 3950: return NULL;
1.92 schwarze 3951: }
3952:
1.94 kristaps 3953: static void
1.167 kristaps 3954: roff_freestr(struct roffkv *r)
1.92 schwarze 3955: {
1.166 kristaps 3956: struct roffkv *n, *nn;
1.92 schwarze 3957:
1.167 kristaps 3958: for (n = r; n; n = nn) {
1.166 kristaps 3959: free(n->key.p);
3960: free(n->val.p);
1.92 schwarze 3961: nn = n->next;
3962: free(n);
3963: }
1.114 kristaps 3964: }
1.266 schwarze 3965:
3966: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 3967:
3968: /*
3969: * Duplicate an input string, making the appropriate character
3970: * conversations (as stipulated by `tr') along the way.
3971: * Returns a heap-allocated string with all the replacements made.
3972: */
3973: char *
3974: roff_strdup(const struct roff *r, const char *p)
3975: {
1.166 kristaps 3976: const struct roffkv *cp;
1.164 kristaps 3977: char *res;
3978: const char *pp;
3979: size_t ssz, sz;
3980: enum mandoc_esc esc;
3981:
1.167 kristaps 3982: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3983: return mandoc_strdup(p);
1.164 kristaps 3984: else if ('\0' == *p)
1.277 schwarze 3985: return mandoc_strdup("");
1.164 kristaps 3986:
3987: /*
3988: * Step through each character looking for term matches
3989: * (remember that a `tr' can be invoked with an escape, which is
3990: * a glyph but the escape is multi-character).
3991: * We only do this if the character hash has been initialised
3992: * and the string is >0 length.
3993: */
3994:
3995: res = NULL;
3996: ssz = 0;
3997:
3998: while ('\0' != *p) {
1.289 schwarze 3999: assert((unsigned int)*p < 128);
4000: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 4001: sz = r->xtab[(int)*p].sz;
4002: res = mandoc_realloc(res, ssz + sz + 1);
4003: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4004: ssz += sz;
4005: p++;
4006: continue;
4007: } else if ('\\' != *p) {
4008: res = mandoc_realloc(res, ssz + 2);
4009: res[ssz++] = *p++;
4010: continue;
4011: }
4012:
1.164 kristaps 4013: /* Search for term matches. */
1.167 kristaps 4014: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4015: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4016: break;
4017:
4018: if (NULL != cp) {
4019: /*
4020: * A match has been found.
4021: * Append the match to the array and move
4022: * forward by its keysize.
4023: */
1.207 schwarze 4024: res = mandoc_realloc(res,
4025: ssz + cp->val.sz + 1);
1.166 kristaps 4026: memcpy(res + ssz, cp->val.p, cp->val.sz);
4027: ssz += cp->val.sz;
4028: p += (int)cp->key.sz;
1.164 kristaps 4029: continue;
4030: }
4031:
1.167 kristaps 4032: /*
4033: * Handle escapes carefully: we need to copy
4034: * over just the escape itself, or else we might
4035: * do replacements within the escape itself.
4036: * Make sure to pass along the bogus string.
4037: */
4038: pp = p++;
4039: esc = mandoc_escape(&p, NULL, NULL);
4040: if (ESCAPE_ERROR == esc) {
4041: sz = strlen(pp);
1.164 kristaps 4042: res = mandoc_realloc(res, ssz + sz + 1);
4043: memcpy(res + ssz, pp, sz);
1.167 kristaps 4044: break;
1.164 kristaps 4045: }
1.207 schwarze 4046: /*
4047: * We bail out on bad escapes.
1.167 kristaps 4048: * No need to warn: we already did so when
4049: * roff_res() was called.
4050: */
4051: sz = (int)(p - pp);
4052: res = mandoc_realloc(res, ssz + sz + 1);
4053: memcpy(res + ssz, pp, sz);
4054: ssz += sz;
1.164 kristaps 4055: }
4056:
4057: res[(int)ssz] = '\0';
1.277 schwarze 4058: return res;
1.227 schwarze 4059: }
4060:
4061: int
4062: roff_getformat(const struct roff *r)
4063: {
4064:
1.277 schwarze 4065: return r->format;
1.174 kristaps 4066: }
4067:
4068: /*
1.207 schwarze 4069: * Find out whether a line is a macro line or not.
1.174 kristaps 4070: * If it is, adjust the current position and return one; if it isn't,
4071: * return zero and don't change the current position.
4072: * If the control character has been set with `.cc', then let that grain
4073: * precedence.
4074: * This is slighly contrary to groff, where using the non-breaking
4075: * control character when `cc' has been invoked will cause the
4076: * non-breaking macro contents to be printed verbatim.
4077: */
4078: int
4079: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4080: {
4081: int pos;
4082:
4083: pos = *ppos;
4084:
1.303 schwarze 4085: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4086: pos++;
1.303 schwarze 4087: else if (r->control != '\0')
1.277 schwarze 4088: return 0;
1.174 kristaps 4089: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4090: pos += 2;
4091: else if ('.' == cp[pos] || '\'' == cp[pos])
4092: pos++;
4093: else
1.277 schwarze 4094: return 0;
1.174 kristaps 4095:
4096: while (' ' == cp[pos] || '\t' == cp[pos])
4097: pos++;
4098:
4099: *ppos = pos;
1.277 schwarze 4100: return 1;
1.74 kristaps 4101: }
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