Annotation of mandoc/roff.c, Revision 1.346
1.346 ! schwarze 1: /* $Id: roff.c,v 1.345 2018/12/12 21:54:35 schwarze Exp $ */
1.1 kristaps 2: /*
1.267 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.325 schwarze 4: * Copyright (c) 2010-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.66 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.106 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.66 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.106 kristaps 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.66 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 17: */
1.66 kristaps 18: #include "config.h"
1.225 schwarze 19:
20: #include <sys/types.h>
1.30 kristaps 21:
1.67 kristaps 22: #include <assert.h>
1.85 kristaps 23: #include <ctype.h>
1.245 schwarze 24: #include <limits.h>
1.295 schwarze 25: #include <stddef.h>
26: #include <stdint.h>
1.178 schwarze 27: #include <stdio.h>
1.1 kristaps 28: #include <stdlib.h>
1.67 kristaps 29: #include <string.h>
1.1 kristaps 30:
1.201 schwarze 31: #include "mandoc_aux.h"
1.295 schwarze 32: #include "mandoc_ohash.h"
1.345 schwarze 33: #include "mandoc.h"
1.265 schwarze 34: #include "roff.h"
1.226 schwarze 35: #include "libmandoc.h"
1.266 schwarze 36: #include "roff_int.h"
1.109 kristaps 37: #include "libroff.h"
1.346 ! schwarze 38: #include "tbl_parse.h"
1.82 kristaps 39:
1.170 schwarze 40: /* Maximum number of string expansions per line, to break infinite loops. */
41: #define EXPAND_LIMIT 1000
42:
1.315 schwarze 43: /* Types of definitions of macros and strings. */
44: #define ROFFDEF_USER (1 << 1) /* User-defined. */
45: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
46: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
47: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
48: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
49: ROFFDEF_REN | ROFFDEF_STD)
1.325 schwarze 50: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 51:
1.266 schwarze 52: /* --- data types --------------------------------------------------------- */
53:
1.147 kristaps 54: /*
1.167 kristaps 55: * An incredibly-simple string buffer.
56: */
1.94 kristaps 57: struct roffstr {
1.167 kristaps 58: char *p; /* nil-terminated buffer */
59: size_t sz; /* saved strlen(p) */
1.166 kristaps 60: };
61:
62: /*
1.167 kristaps 63: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 64: */
65: struct roffkv {
66: struct roffstr key;
67: struct roffstr val;
68: struct roffkv *next; /* next in list */
1.94 kristaps 69: };
70:
1.180 schwarze 71: /*
72: * A single number register as part of a singly-linked list.
73: */
74: struct roffreg {
75: struct roffstr key;
1.181 schwarze 76: int val;
1.327 schwarze 77: int step;
1.180 schwarze 78: struct roffreg *next;
79: };
80:
1.295 schwarze 81: /*
82: * Association of request and macro names with token IDs.
83: */
84: struct roffreq {
85: enum roff_tok tok;
86: char name[];
87: };
88:
1.339 schwarze 89: /*
90: * A macro processing context.
91: * More than one is needed when macro calls are nested.
92: */
93: struct mctx {
94: char **argv;
95: int argc;
96: int argsz;
97: };
98:
1.67 kristaps 99: struct roff {
1.128 kristaps 100: struct mparse *parse; /* parse point */
1.296 schwarze 101: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 102: struct roffnode *last; /* leaf of stack */
1.339 schwarze 103: struct mctx *mstack; /* stack of macro contexts */
1.223 schwarze 104: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 105: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 106: struct roffreg *regtab; /* number registers */
1.166 kristaps 107: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 108: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 109: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
110: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 111: const char *current_string; /* value of last called user macro */
1.118 kristaps 112: struct tbl_node *first_tbl; /* first table parsed */
113: struct tbl_node *last_tbl; /* last table parsed */
114: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 115: struct eqn_node *last_eqn; /* equation parser */
116: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 117: int eqn_inline; /* current equation is inline */
1.223 schwarze 118: int options; /* parse options */
1.339 schwarze 119: int mstacksz; /* current size of mstack */
120: int mstackpos; /* position in mstack */
1.223 schwarze 121: int rstacksz; /* current size limit of rstack */
122: int rstackpos; /* position in rstack */
1.227 schwarze 123: int format; /* current file in mdoc or man format */
1.223 schwarze 124: char control; /* control character */
1.303 schwarze 125: char escape; /* escape character */
1.79 kristaps 126: };
127:
1.67 kristaps 128: struct roffnode {
1.294 schwarze 129: enum roff_tok tok; /* type of node */
1.67 kristaps 130: struct roffnode *parent; /* up one in stack */
131: int line; /* parse line */
132: int col; /* parse col */
1.106 kristaps 133: char *name; /* node name, e.g. macro name */
1.79 kristaps 134: char *end; /* end-rules: custom token */
135: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 136: int rule; /* current evaluation rule */
1.67 kristaps 137: };
138:
139: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 140: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 141: struct buf *buf, /* input buffer */ \
1.67 kristaps 142: int ln, /* parse line */ \
1.75 kristaps 143: int ppos, /* original pos in buffer */ \
144: int pos, /* current pos in buffer */ \
1.74 kristaps 145: int *offs /* reset offset of buffer data */
1.67 kristaps 146:
1.340 schwarze 147: typedef int (*roffproc)(ROFF_ARGS);
1.67 kristaps 148:
149: struct roffmac {
1.79 kristaps 150: roffproc proc; /* process new macro */
151: roffproc text; /* process as child text of macro */
152: roffproc sub; /* process as child of macro */
153: int flags;
154: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 155: };
156:
1.141 kristaps 157: struct predef {
158: const char *name; /* predefined input name */
159: const char *str; /* replacement symbol */
160: };
161:
162: #define PREDEF(__name, __str) \
163: { (__name), (__str) },
164:
1.266 schwarze 165: /* --- function prototypes ------------------------------------------------ */
166:
1.340 schwarze 167: static int roffnode_cleanscope(struct roff *);
168: static int roffnode_pop(struct roff *);
1.294 schwarze 169: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 170: const char *, int, int);
1.346 ! schwarze 171: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.340 schwarze 172: static int roff_als(ROFF_ARGS);
173: static int roff_block(ROFF_ARGS);
174: static int roff_block_text(ROFF_ARGS);
175: static int roff_block_sub(ROFF_ARGS);
176: static int roff_br(ROFF_ARGS);
177: static int roff_cblock(ROFF_ARGS);
178: static int roff_cc(ROFF_ARGS);
179: static int roff_ccond(struct roff *, int, int);
1.341 schwarze 180: static int roff_char(ROFF_ARGS);
1.340 schwarze 181: static int roff_cond(ROFF_ARGS);
182: static int roff_cond_text(ROFF_ARGS);
183: static int roff_cond_sub(ROFF_ARGS);
184: static int roff_ds(ROFF_ARGS);
185: static int roff_ec(ROFF_ARGS);
186: static int roff_eo(ROFF_ARGS);
187: static int roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 188: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 189: static int roff_evalnum(struct roff *, int,
190: const char *, int *, int *, int);
191: static int roff_evalpar(struct roff *, int,
1.261 schwarze 192: const char *, int *, int *, int);
1.198 schwarze 193: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 194: static void roff_free1(struct roff *);
1.180 schwarze 195: static void roff_freereg(struct roffreg *);
1.167 kristaps 196: static void roff_freestr(struct roffkv *);
1.212 schwarze 197: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 198: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 199: static int roff_getop(const char *, int *, char *);
1.327 schwarze 200: static int roff_getregn(struct roff *,
201: const char *, size_t, char);
1.273 schwarze 202: static int roff_getregro(const struct roff *,
203: const char *name);
1.325 schwarze 204: static const char *roff_getstrn(struct roff *,
1.315 schwarze 205: const char *, size_t, int *);
1.271 schwarze 206: static int roff_hasregn(const struct roff *,
207: const char *, size_t);
1.340 schwarze 208: static int roff_insec(ROFF_ARGS);
209: static int roff_it(ROFF_ARGS);
210: static int roff_line_ignore(ROFF_ARGS);
1.265 schwarze 211: static void roff_man_alloc1(struct roff_man *);
212: static void roff_man_free1(struct roff_man *);
1.340 schwarze 213: static int roff_manyarg(ROFF_ARGS);
214: static int roff_nop(ROFF_ARGS);
215: static int roff_nr(ROFF_ARGS);
216: static int roff_onearg(ROFF_ARGS);
1.294 schwarze 217: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 218: int, int);
1.340 schwarze 219: static int roff_parsetext(struct roff *, struct buf *,
1.305 schwarze 220: int, int *);
1.340 schwarze 221: static int roff_renamed(ROFF_ARGS);
222: static int roff_res(struct roff *, struct buf *, int, int);
223: static int roff_return(ROFF_ARGS);
224: static int roff_rm(ROFF_ARGS);
225: static int roff_rn(ROFF_ARGS);
226: static int roff_rr(ROFF_ARGS);
1.326 schwarze 227: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 228: size_t, int, char, int);
1.94 kristaps 229: static void roff_setstr(struct roff *,
1.106 kristaps 230: const char *, const char *, int);
1.207 schwarze 231: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 232: size_t, const char *, size_t, int);
1.340 schwarze 233: static int roff_shift(ROFF_ARGS);
234: static int roff_so(ROFF_ARGS);
235: static int roff_tr(ROFF_ARGS);
236: static int roff_Dd(ROFF_ARGS);
237: static int roff_TE(ROFF_ARGS);
238: static int roff_TS(ROFF_ARGS);
239: static int roff_EQ(ROFF_ARGS);
240: static int roff_EN(ROFF_ARGS);
241: static int roff_T_(ROFF_ARGS);
242: static int roff_unsupp(ROFF_ARGS);
243: static int roff_userdef(ROFF_ARGS);
1.67 kristaps 244:
1.266 schwarze 245: /* --- constant data ------------------------------------------------------ */
246:
1.261 schwarze 247: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
248: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
249:
1.294 schwarze 250: const char *__roff_name[MAN_MAX + 1] = {
1.305 schwarze 251: "br", "ce", "ft", "ll",
1.312 schwarze 252: "mc", "po", "rj", "sp",
253: "ta", "ti", NULL,
1.294 schwarze 254: "ab", "ad", "af", "aln",
255: "als", "am", "am1", "ami",
256: "ami1", "as", "as1", "asciify",
257: "backtrace", "bd", "bleedat", "blm",
258: "box", "boxa", "bp", "BP",
259: "break", "breakchar", "brnl", "brp",
1.305 schwarze 260: "brpnl", "c2", "cc",
1.294 schwarze 261: "cf", "cflags", "ch", "char",
262: "chop", "class", "close", "CL",
263: "color", "composite", "continue", "cp",
264: "cropat", "cs", "cu", "da",
265: "dch", "Dd", "de", "de1",
266: "defcolor", "dei", "dei1", "device",
267: "devicem", "di", "do", "ds",
268: "ds1", "dwh", "dt", "ec",
269: "ecr", "ecs", "el", "em",
270: "EN", "eo", "EP", "EQ",
271: "errprint", "ev", "evc", "ex",
272: "fallback", "fam", "fc", "fchar",
273: "fcolor", "fdeferlig", "feature", "fkern",
274: "fl", "flig", "fp", "fps",
275: "fschar", "fspacewidth", "fspecial", "ftr",
276: "fzoom", "gcolor", "hc", "hcode",
277: "hidechar", "hla", "hlm", "hpf",
278: "hpfa", "hpfcode", "hw", "hy",
279: "hylang", "hylen", "hym", "hypp",
280: "hys", "ie", "if", "ig",
281: "index", "it", "itc", "IX",
282: "kern", "kernafter", "kernbefore", "kernpair",
283: "lc", "lc_ctype", "lds", "length",
284: "letadj", "lf", "lg", "lhang",
285: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 286: "ls", "lsm", "lt",
1.294 schwarze 287: "mediasize", "minss", "mk", "mso",
288: "na", "ne", "nh", "nhychar",
289: "nm", "nn", "nop", "nr",
290: "nrf", "nroff", "ns", "nx",
291: "open", "opena", "os", "output",
292: "padj", "papersize", "pc", "pev",
293: "pi", "PI", "pl", "pm",
1.312 schwarze 294: "pn", "pnr", "ps",
1.294 schwarze 295: "psbb", "pshape", "pso", "ptr",
296: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 297: "return", "rfschar", "rhang",
1.294 schwarze 298: "rm", "rn", "rnn", "rr",
299: "rs", "rt", "schar", "sentchar",
300: "shc", "shift", "sizes", "so",
301: "spacewidth", "special", "spreadwarn", "ss",
302: "sty", "substring", "sv", "sy",
1.300 schwarze 303: "T&", "tc", "TE",
1.301 schwarze 304: "TH", "tkf", "tl",
1.294 schwarze 305: "tm", "tm1", "tmc", "tr",
306: "track", "transchar", "trf", "trimat",
307: "trin", "trnt", "troff", "TS",
308: "uf", "ul", "unformat", "unwatch",
309: "unwatchn", "vpt", "vs", "warn",
310: "warnscale", "watch", "watchlength", "watchn",
311: "wh", "while", "write", "writec",
312: "writem", "xflag", ".", NULL,
1.306 schwarze 313: NULL, "text",
1.294 schwarze 314: "Dd", "Dt", "Os", "Sh",
315: "Ss", "Pp", "D1", "Dl",
316: "Bd", "Ed", "Bl", "El",
317: "It", "Ad", "An", "Ap",
318: "Ar", "Cd", "Cm", "Dv",
319: "Er", "Ev", "Ex", "Fa",
320: "Fd", "Fl", "Fn", "Ft",
321: "Ic", "In", "Li", "Nd",
322: "Nm", "Op", "Ot", "Pa",
323: "Rv", "St", "Va", "Vt",
324: "Xr", "%A", "%B", "%D",
325: "%I", "%J", "%N", "%O",
326: "%P", "%R", "%T", "%V",
327: "Ac", "Ao", "Aq", "At",
328: "Bc", "Bf", "Bo", "Bq",
329: "Bsx", "Bx", "Db", "Dc",
330: "Do", "Dq", "Ec", "Ef",
331: "Em", "Eo", "Fx", "Ms",
332: "No", "Ns", "Nx", "Ox",
333: "Pc", "Pf", "Po", "Pq",
334: "Qc", "Ql", "Qo", "Qq",
335: "Re", "Rs", "Sc", "So",
336: "Sq", "Sm", "Sx", "Sy",
337: "Tn", "Ux", "Xc", "Xo",
338: "Fo", "Fc", "Oo", "Oc",
339: "Bk", "Ek", "Bt", "Hf",
340: "Fr", "Ud", "Lb", "Lp",
341: "Lk", "Mt", "Brq", "Bro",
342: "Brc", "%C", "Es", "En",
1.299 schwarze 343: "Dx", "%Q", "%U", "Ta",
344: NULL,
1.294 schwarze 345: "TH", "SH", "SS", "TP",
1.332 schwarze 346: "TQ",
1.294 schwarze 347: "LP", "PP", "P", "IP",
348: "HP", "SM", "SB", "BI",
349: "IB", "BR", "RB", "R",
350: "B", "I", "IR", "RI",
1.299 schwarze 351: "nf", "fi",
1.294 schwarze 352: "RE", "RS", "DT", "UC",
1.297 schwarze 353: "PD", "AT", "in",
1.333 schwarze 354: "SY", "YS", "OP",
355: "EX", "EE", "UR",
1.317 schwarze 356: "UE", "MT", "ME", NULL
1.294 schwarze 357: };
358: const char *const *roff_name = __roff_name;
359:
360: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 361: { roff_br, NULL, NULL, 0 }, /* br */
1.305 schwarze 362: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.297 schwarze 363: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 364: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 365: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.312 schwarze 366: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 367: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 368: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 369: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 370: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 371: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 372: { roff_unsupp, NULL, NULL, 0 }, /* ab */
373: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
374: { roff_line_ignore, NULL, NULL, 0 }, /* af */
375: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 376: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 377: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
378: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
379: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
380: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
381: { roff_ds, NULL, NULL, 0 }, /* as */
382: { roff_ds, NULL, NULL, 0 }, /* as1 */
383: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
384: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
385: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
386: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
387: { roff_unsupp, NULL, NULL, 0 }, /* blm */
388: { roff_unsupp, NULL, NULL, 0 }, /* box */
389: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
390: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
391: { roff_unsupp, NULL, NULL, 0 }, /* BP */
392: { roff_unsupp, NULL, NULL, 0 }, /* break */
393: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
394: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 395: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 396: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
397: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
398: { roff_cc, NULL, NULL, 0 }, /* cc */
399: { roff_insec, NULL, NULL, 0 }, /* cf */
400: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
401: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.341 schwarze 402: { roff_char, NULL, NULL, 0 }, /* char */
1.295 schwarze 403: { roff_unsupp, NULL, NULL, 0 }, /* chop */
404: { roff_line_ignore, NULL, NULL, 0 }, /* class */
405: { roff_insec, NULL, NULL, 0 }, /* close */
406: { roff_unsupp, NULL, NULL, 0 }, /* CL */
407: { roff_line_ignore, NULL, NULL, 0 }, /* color */
408: { roff_unsupp, NULL, NULL, 0 }, /* composite */
409: { roff_unsupp, NULL, NULL, 0 }, /* continue */
410: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
411: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
412: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
413: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
414: { roff_unsupp, NULL, NULL, 0 }, /* da */
415: { roff_unsupp, NULL, NULL, 0 }, /* dch */
416: { roff_Dd, NULL, NULL, 0 }, /* Dd */
417: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
418: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
419: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
420: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
421: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
422: { roff_unsupp, NULL, NULL, 0 }, /* device */
423: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
424: { roff_unsupp, NULL, NULL, 0 }, /* di */
425: { roff_unsupp, NULL, NULL, 0 }, /* do */
426: { roff_ds, NULL, NULL, 0 }, /* ds */
427: { roff_ds, NULL, NULL, 0 }, /* ds1 */
428: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
429: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 430: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 431: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
432: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
433: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
434: { roff_unsupp, NULL, NULL, 0 }, /* em */
435: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 436: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 437: { roff_unsupp, NULL, NULL, 0 }, /* EP */
438: { roff_EQ, NULL, NULL, 0 }, /* EQ */
439: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
440: { roff_unsupp, NULL, NULL, 0 }, /* ev */
441: { roff_unsupp, NULL, NULL, 0 }, /* evc */
442: { roff_unsupp, NULL, NULL, 0 }, /* ex */
443: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
444: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
445: { roff_unsupp, NULL, NULL, 0 }, /* fc */
446: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
447: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
448: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
449: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
450: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
451: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
452: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
453: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
454: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
455: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
456: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
457: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
458: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
459: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
460: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
461: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
462: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
463: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
464: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
465: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
466: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
467: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
468: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
469: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
470: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
471: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
472: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
473: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
474: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
475: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
476: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
477: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
478: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
479: { roff_unsupp, NULL, NULL, 0 }, /* index */
480: { roff_it, NULL, NULL, 0 }, /* it */
481: { roff_unsupp, NULL, NULL, 0 }, /* itc */
482: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
483: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
484: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
485: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
486: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
487: { roff_unsupp, NULL, NULL, 0 }, /* lc */
488: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
489: { roff_unsupp, NULL, NULL, 0 }, /* lds */
490: { roff_unsupp, NULL, NULL, 0 }, /* length */
491: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
492: { roff_insec, NULL, NULL, 0 }, /* lf */
493: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
494: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
495: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
496: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
497: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
498: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
499: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
500: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
501: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
502: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
503: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
504: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
505: { roff_insec, NULL, NULL, 0 }, /* mso */
506: { roff_line_ignore, NULL, NULL, 0 }, /* na */
507: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
508: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
509: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
510: { roff_unsupp, NULL, NULL, 0 }, /* nm */
511: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 512: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 513: { roff_nr, NULL, NULL, 0 }, /* nr */
514: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
515: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
516: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
517: { roff_insec, NULL, NULL, 0 }, /* nx */
518: { roff_insec, NULL, NULL, 0 }, /* open */
519: { roff_insec, NULL, NULL, 0 }, /* opena */
520: { roff_line_ignore, NULL, NULL, 0 }, /* os */
521: { roff_unsupp, NULL, NULL, 0 }, /* output */
522: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
523: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
524: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
525: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
526: { roff_insec, NULL, NULL, 0 }, /* pi */
527: { roff_unsupp, NULL, NULL, 0 }, /* PI */
528: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
529: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
530: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
531: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
532: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
533: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
534: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
535: { roff_insec, NULL, NULL, 0 }, /* pso */
536: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
537: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
538: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
539: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
540: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 schwarze 541: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 542: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
543: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
544: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 545: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 546: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
547: { roff_rr, NULL, NULL, 0 }, /* rr */
548: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
549: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
550: { roff_unsupp, NULL, NULL, 0 }, /* schar */
551: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
552: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 schwarze 553: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 554: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
555: { roff_so, NULL, NULL, 0 }, /* so */
556: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
557: { roff_line_ignore, NULL, NULL, 0 }, /* special */
558: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
559: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
560: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
561: { roff_unsupp, NULL, NULL, 0 }, /* substring */
562: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
563: { roff_insec, NULL, NULL, 0 }, /* sy */
564: { roff_T_, NULL, NULL, 0 }, /* T& */
565: { roff_unsupp, NULL, NULL, 0 }, /* tc */
566: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 567: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 568: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
569: { roff_unsupp, NULL, NULL, 0 }, /* tl */
570: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
571: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
572: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
573: { roff_tr, NULL, NULL, 0 }, /* tr */
574: { roff_line_ignore, NULL, NULL, 0 }, /* track */
575: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
576: { roff_insec, NULL, NULL, 0 }, /* trf */
577: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
578: { roff_unsupp, NULL, NULL, 0 }, /* trin */
579: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
580: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
581: { roff_TS, NULL, NULL, 0 }, /* TS */
582: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
583: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
584: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
585: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
586: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
587: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
588: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
589: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
590: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
591: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
592: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
593: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
594: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.340 schwarze 595: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.295 schwarze 596: { roff_insec, NULL, NULL, 0 }, /* write */
597: { roff_insec, NULL, NULL, 0 }, /* writec */
598: { roff_insec, NULL, NULL, 0 }, /* writem */
599: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
600: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 601: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 602: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 603: };
604:
1.141 kristaps 605: /* Array of injected predefined strings. */
606: #define PREDEFS_MAX 38
607: static const struct predef predefs[PREDEFS_MAX] = {
608: #include "predefs.in"
609: };
610:
1.305 schwarze 611: static int roffce_lines; /* number of input lines to center */
612: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 613: static int roffit_lines; /* number of lines to delay */
614: static char *roffit_macro; /* nil-terminated macro line */
615:
1.207 schwarze 616:
1.266 schwarze 617: /* --- request table ------------------------------------------------------ */
618:
1.295 schwarze 619: struct ohash *
620: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 621: {
1.295 schwarze 622: struct ohash *htab;
623: struct roffreq *req;
624: enum roff_tok tok;
625: size_t sz;
626: unsigned int slot;
1.85 kristaps 627:
1.295 schwarze 628: htab = mandoc_malloc(sizeof(*htab));
629: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 630:
1.295 schwarze 631: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 632: if (roff_name[tok] == NULL)
633: continue;
1.295 schwarze 634: sz = strlen(roff_name[tok]);
635: req = mandoc_malloc(sizeof(*req) + sz + 1);
636: req->tok = tok;
637: memcpy(req->name, roff_name[tok], sz + 1);
638: slot = ohash_qlookup(htab, req->name);
639: ohash_insert(htab, slot, req);
1.85 kristaps 640: }
1.295 schwarze 641: return htab;
1.85 kristaps 642: }
643:
1.295 schwarze 644: void
645: roffhash_free(struct ohash *htab)
1.67 kristaps 646: {
1.295 schwarze 647: struct roffreq *req;
648: unsigned int slot;
1.67 kristaps 649:
1.295 schwarze 650: if (htab == NULL)
651: return;
652: for (req = ohash_first(htab, &slot); req != NULL;
653: req = ohash_next(htab, &slot))
654: free(req);
655: ohash_delete(htab);
656: free(htab);
657: }
658:
659: enum roff_tok
660: roffhash_find(struct ohash *htab, const char *name, size_t sz)
661: {
662: struct roffreq *req;
663: const char *end;
664:
665: if (sz) {
666: end = name + sz;
667: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
668: } else
669: req = ohash_find(htab, ohash_qlookup(htab, name));
670: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 671: }
672:
1.266 schwarze 673: /* --- stack of request blocks -------------------------------------------- */
674:
1.67 kristaps 675: /*
676: * Pop the current node off of the stack of roff instructions currently
677: * pending.
678: */
1.340 schwarze 679: static int
1.67 kristaps 680: roffnode_pop(struct roff *r)
681: {
682: struct roffnode *p;
1.340 schwarze 683: int inloop;
1.67 kristaps 684:
1.207 schwarze 685: p = r->last;
1.340 schwarze 686: inloop = p->tok == ROFF_while;
687: r->last = p->parent;
1.106 kristaps 688: free(p->name);
689: free(p->end);
1.67 kristaps 690: free(p);
1.340 schwarze 691: return inloop;
1.67 kristaps 692: }
693:
694: /*
695: * Push a roff node onto the instruction stack. This must later be
696: * removed with roffnode_pop().
697: */
1.98 schwarze 698: static void
1.294 schwarze 699: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 700: int line, int col)
1.67 kristaps 701: {
702: struct roffnode *p;
703:
1.98 schwarze 704: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 705: p->tok = tok;
1.106 kristaps 706: if (name)
707: p->name = mandoc_strdup(name);
1.67 kristaps 708: p->parent = r->last;
709: p->line = line;
710: p->col = col;
1.198 schwarze 711: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 712:
713: r->last = p;
714: }
715:
1.266 schwarze 716: /* --- roff parser state data management ---------------------------------- */
717:
1.67 kristaps 718: static void
719: roff_free1(struct roff *r)
720: {
1.167 kristaps 721: int i;
1.67 kristaps 722:
1.346 ! schwarze 723: tbl_free(r->first_tbl);
1.113 kristaps 724: r->first_tbl = r->last_tbl = r->tbl = NULL;
725:
1.319 schwarze 726: if (r->last_eqn != NULL)
727: eqn_free(r->last_eqn);
728: r->last_eqn = r->eqn = NULL;
1.125 kristaps 729:
1.339 schwarze 730: while (r->mstackpos >= 0)
731: roff_userret(r);
732:
1.67 kristaps 733: while (r->last)
734: roffnode_pop(r);
1.109 kristaps 735:
1.223 schwarze 736: free (r->rstack);
737: r->rstack = NULL;
738: r->rstacksz = 0;
739: r->rstackpos = -1;
740:
741: roff_freereg(r->regtab);
742: r->regtab = NULL;
743:
1.167 kristaps 744: roff_freestr(r->strtab);
1.306 schwarze 745: roff_freestr(r->rentab);
1.167 kristaps 746: roff_freestr(r->xmbtab);
1.306 schwarze 747: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 748:
749: if (r->xtab)
750: for (i = 0; i < 128; i++)
751: free(r->xtab[i].p);
752: free(r->xtab);
753: r->xtab = NULL;
1.67 kristaps 754: }
755:
756: void
757: roff_reset(struct roff *r)
758: {
759: roff_free1(r);
1.227 schwarze 760: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 761: r->control = '\0';
762: r->escape = '\\';
1.307 schwarze 763: roffce_lines = 0;
764: roffce_node = NULL;
765: roffit_lines = 0;
766: roffit_macro = NULL;
1.67 kristaps 767: }
768:
769: void
770: roff_free(struct roff *r)
771: {
1.339 schwarze 772: int i;
773:
1.67 kristaps 774: roff_free1(r);
1.339 schwarze 775: for (i = 0; i < r->mstacksz; i++)
776: free(r->mstack[i].argv);
777: free(r->mstack);
1.295 schwarze 778: roffhash_free(r->reqtab);
1.67 kristaps 779: free(r);
780: }
781:
782: struct roff *
1.279 schwarze 783: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 784: {
785: struct roff *r;
786:
1.98 schwarze 787: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 788: r->parse = parse;
1.328 schwarze 789: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.199 schwarze 790: r->options = options;
1.227 schwarze 791: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 792: r->mstackpos = -1;
1.82 kristaps 793: r->rstackpos = -1;
1.303 schwarze 794: r->escape = '\\';
1.277 schwarze 795: return r;
1.265 schwarze 796: }
797:
1.266 schwarze 798: /* --- syntax tree state data management ---------------------------------- */
799:
1.265 schwarze 800: static void
801: roff_man_free1(struct roff_man *man)
802: {
803:
1.266 schwarze 804: if (man->first != NULL)
805: roff_node_delete(man, man->first);
1.265 schwarze 806: free(man->meta.msec);
807: free(man->meta.vol);
808: free(man->meta.os);
809: free(man->meta.arch);
810: free(man->meta.title);
811: free(man->meta.name);
812: free(man->meta.date);
813: }
814:
815: static void
816: roff_man_alloc1(struct roff_man *man)
817: {
818:
819: memset(&man->meta, 0, sizeof(man->meta));
820: man->first = mandoc_calloc(1, sizeof(*man->first));
821: man->first->type = ROFFT_ROOT;
822: man->last = man->first;
823: man->last_es = NULL;
824: man->flags = 0;
825: man->macroset = MACROSET_NONE;
826: man->lastsec = man->lastnamed = SEC_NONE;
827: man->next = ROFF_NEXT_CHILD;
828: }
829:
830: void
831: roff_man_reset(struct roff_man *man)
832: {
833:
834: roff_man_free1(man);
835: roff_man_alloc1(man);
836: }
837:
838: void
839: roff_man_free(struct roff_man *man)
840: {
841:
842: roff_man_free1(man);
843: free(man);
844: }
845:
846: struct roff_man *
847: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.316 schwarze 848: const char *os_s, int quick)
1.265 schwarze 849: {
850: struct roff_man *man;
851:
852: man = mandoc_calloc(1, sizeof(*man));
853: man->parse = parse;
854: man->roff = roff;
1.316 schwarze 855: man->os_s = os_s;
1.265 schwarze 856: man->quick = quick;
857: roff_man_alloc1(man);
1.296 schwarze 858: roff->man = man;
1.277 schwarze 859: return man;
1.67 kristaps 860: }
861:
1.266 schwarze 862: /* --- syntax tree handling ----------------------------------------------- */
863:
864: struct roff_node *
865: roff_node_alloc(struct roff_man *man, int line, int pos,
866: enum roff_type type, int tok)
867: {
868: struct roff_node *n;
869:
870: n = mandoc_calloc(1, sizeof(*n));
871: n->line = line;
872: n->pos = pos;
873: n->tok = tok;
874: n->type = type;
875: n->sec = man->lastsec;
876:
877: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 878: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 879: else
1.285 schwarze 880: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 881: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 882: n->flags |= NODE_LINE;
1.266 schwarze 883: man->flags &= ~MDOC_NEWLINE;
884:
1.277 schwarze 885: return n;
1.266 schwarze 886: }
887:
888: void
889: roff_node_append(struct roff_man *man, struct roff_node *n)
890: {
891:
892: switch (man->next) {
893: case ROFF_NEXT_SIBLING:
1.281 schwarze 894: if (man->last->next != NULL) {
895: n->next = man->last->next;
896: man->last->next->prev = n;
897: } else
898: man->last->parent->last = n;
1.266 schwarze 899: man->last->next = n;
900: n->prev = man->last;
901: n->parent = man->last->parent;
902: break;
903: case ROFF_NEXT_CHILD:
1.287 schwarze 904: if (man->last->child != NULL) {
905: n->next = man->last->child;
906: man->last->child->prev = n;
907: } else
908: man->last->last = n;
1.266 schwarze 909: man->last->child = n;
910: n->parent = man->last;
911: break;
912: default:
913: abort();
914: }
1.282 schwarze 915: man->last = n;
1.266 schwarze 916:
917: switch (n->type) {
918: case ROFFT_HEAD:
919: n->parent->head = n;
920: break;
921: case ROFFT_BODY:
1.282 schwarze 922: if (n->end != ENDBODY_NOT)
923: return;
1.266 schwarze 924: n->parent->body = n;
925: break;
926: case ROFFT_TAIL:
927: n->parent->tail = n;
928: break;
929: default:
1.282 schwarze 930: return;
1.266 schwarze 931: }
1.282 schwarze 932:
933: /*
934: * Copy over the normalised-data pointer of our parent. Not
935: * everybody has one, but copying a null pointer is fine.
936: */
937:
938: n->norm = n->parent->norm;
939: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 940: }
941:
1.267 schwarze 942: void
943: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
944: {
945: struct roff_node *n;
946:
947: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
948: n->string = roff_strdup(man->roff, word);
949: roff_node_append(man, n);
1.286 schwarze 950: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 951: man->next = ROFF_NEXT_SIBLING;
952: }
953:
954: void
955: roff_word_append(struct roff_man *man, const char *word)
956: {
957: struct roff_node *n;
958: char *addstr, *newstr;
959:
960: n = man->last;
961: addstr = roff_strdup(man->roff, word);
962: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
963: free(addstr);
964: free(n->string);
965: n->string = newstr;
966: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 967: }
968:
969: void
970: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
971: {
972: struct roff_node *n;
973:
974: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
975: roff_node_append(man, n);
976: man->next = ROFF_NEXT_CHILD;
977: }
978:
979: struct roff_node *
980: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
981: {
982: struct roff_node *n;
983:
984: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
985: roff_node_append(man, n);
986: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 987: return n;
1.267 schwarze 988: }
989:
1.266 schwarze 990: struct roff_node *
991: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
992: {
993: struct roff_node *n;
994:
995: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
996: roff_node_append(man, n);
997: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 998: return n;
1.266 schwarze 999: }
1000:
1001: struct roff_node *
1002: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1003: {
1004: struct roff_node *n;
1005:
1006: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1007: roff_node_append(man, n);
1008: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1009: return n;
1.267 schwarze 1010: }
1011:
1.321 schwarze 1012: static void
1.346 ! schwarze 1013: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1014: {
1015: struct roff_node *n;
1.346 ! schwarze 1016: struct tbl_span *span;
1.267 schwarze 1017:
1018: if (man->macroset == MACROSET_MAN)
1.302 schwarze 1019: man_breakscope(man, ROFF_TS);
1.321 schwarze 1020: while ((span = tbl_span(tbl)) != NULL) {
1.346 ! schwarze 1021: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1022: n->span = span;
1023: roff_node_append(man, n);
1024: n->flags |= NODE_VALID | NODE_ENDED;
1025: man->next = ROFF_NEXT_SIBLING;
1026: }
1.266 schwarze 1027: }
1028:
1029: void
1030: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1031: {
1032:
1033: /* Adjust siblings. */
1034:
1035: if (n->prev)
1036: n->prev->next = n->next;
1037: if (n->next)
1038: n->next->prev = n->prev;
1039:
1040: /* Adjust parent. */
1041:
1042: if (n->parent != NULL) {
1043: if (n->parent->child == n)
1044: n->parent->child = n->next;
1045: if (n->parent->last == n)
1046: n->parent->last = n->prev;
1047: }
1048:
1049: /* Adjust parse point. */
1050:
1051: if (man == NULL)
1052: return;
1053: if (man->last == n) {
1054: if (n->prev == NULL) {
1055: man->last = n->parent;
1056: man->next = ROFF_NEXT_CHILD;
1057: } else {
1058: man->last = n->prev;
1059: man->next = ROFF_NEXT_SIBLING;
1060: }
1061: }
1062: if (man->first == n)
1063: man->first = NULL;
1.344 schwarze 1064: }
1065:
1066: void
1067: roff_node_relink(struct roff_man *man, struct roff_node *n)
1068: {
1069: roff_node_unlink(man, n);
1070: n->prev = n->next = NULL;
1071: roff_node_append(man, n);
1.266 schwarze 1072: }
1073:
1074: void
1075: roff_node_free(struct roff_node *n)
1076: {
1077:
1078: if (n->args != NULL)
1079: mdoc_argv_free(n->args);
1080: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1081: free(n->norm);
1.319 schwarze 1082: if (n->eqn != NULL)
1083: eqn_box_free(n->eqn);
1.266 schwarze 1084: free(n->string);
1085: free(n);
1086: }
1087:
1088: void
1089: roff_node_delete(struct roff_man *man, struct roff_node *n)
1090: {
1091:
1092: while (n->child != NULL)
1093: roff_node_delete(man, n->child);
1094: roff_node_unlink(man, n);
1095: roff_node_free(n);
1.269 schwarze 1096: }
1097:
1098: void
1099: deroff(char **dest, const struct roff_node *n)
1100: {
1101: char *cp;
1102: size_t sz;
1103:
1104: if (n->type != ROFFT_TEXT) {
1105: for (n = n->child; n != NULL; n = n->next)
1106: deroff(dest, n);
1107: return;
1108: }
1109:
1.288 schwarze 1110: /* Skip leading whitespace. */
1.269 schwarze 1111:
1.288 schwarze 1112: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1113: if (cp[0] == '\\' && cp[1] != '\0' &&
1114: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1115: cp++;
1.288 schwarze 1116: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1117: break;
1118: }
1119:
1.289 schwarze 1120: /* Skip trailing backslash. */
1121:
1122: sz = strlen(cp);
1.290 schwarze 1123: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1124: sz--;
1125:
1.269 schwarze 1126: /* Skip trailing whitespace. */
1127:
1.289 schwarze 1128: for (; sz; sz--)
1.269 schwarze 1129: if ( ! isspace((unsigned char)cp[sz-1]))
1130: break;
1131:
1132: /* Skip empty strings. */
1133:
1134: if (sz == 0)
1135: return;
1136:
1137: if (*dest == NULL) {
1138: *dest = mandoc_strndup(cp, sz);
1139: return;
1140: }
1141:
1142: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1143: free(*dest);
1144: *dest = cp;
1.266 schwarze 1145: }
1146:
1147: /* --- main functions of the roff parser ---------------------------------- */
1148:
1.94 kristaps 1149: /*
1.206 schwarze 1150: * In the current line, expand escape sequences that tend to get
1151: * used in numerical expressions and conditional requests.
1152: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1153: */
1.340 schwarze 1154: static int
1.238 schwarze 1155: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1156: {
1.339 schwarze 1157: struct mctx *ctx; /* current macro call context */
1.208 schwarze 1158: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1159: struct roff_node *n; /* used for header comments */
1.205 schwarze 1160: const char *start; /* start of the string to process */
1.209 schwarze 1161: char *stesc; /* start of an escape sequence ('\\') */
1.328 schwarze 1162: char *ep; /* end of comment string */
1.108 schwarze 1163: const char *stnam; /* start of the name, after "[(*" */
1164: const char *cp; /* end of the name, e.g. before ']' */
1165: const char *res; /* the string to be substituted */
1.238 schwarze 1166: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1167: size_t maxl; /* expected length of the escape name */
1168: size_t naml; /* actual length of the escape name */
1.339 schwarze 1169: size_t asz; /* length of the replacement */
1170: size_t rsz; /* length of the rest of the string */
1.237 schwarze 1171: enum mandoc_esc esc; /* type of the escape sequence */
1172: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1173: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1174: int npos; /* position in numeric expression */
1.218 schwarze 1175: int arg_complete; /* argument not interrupted by eol */
1.339 schwarze 1176: int quote_args; /* true for \\$@, false for \\$* */
1.303 schwarze 1177: int done; /* no more input available */
1.315 schwarze 1178: int deftype; /* type of definition to paste */
1.323 schwarze 1179: int rcsid; /* kind of RCS id seen */
1.327 schwarze 1180: char sign; /* increment number register */
1.206 schwarze 1181: char term; /* character terminating the escape */
1.94 kristaps 1182:
1.303 schwarze 1183: /* Search forward for comments. */
1184:
1185: done = 0;
1186: start = buf->buf + pos;
1187: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1188: if (stesc[0] != r->escape || stesc[1] == '\0')
1189: continue;
1190: stesc++;
1191: if (*stesc != '"' && *stesc != '#')
1192: continue;
1.313 schwarze 1193:
1194: /* Comment found, look for RCS id. */
1195:
1.323 schwarze 1196: rcsid = 0;
1.313 schwarze 1197: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1198: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1199: cp += 8;
1200: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1201: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1202: cp += 7;
1203: }
1204: if (cp != NULL &&
1205: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1206: strchr(cp, '$') != NULL) {
1.323 schwarze 1207: if (r->man->meta.rcsids & rcsid)
1.314 schwarze 1208: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1209: ln, stesc + 1 - buf->buf, stesc + 1);
1.323 schwarze 1210: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1211: }
1.313 schwarze 1212:
1213: /* Handle trailing whitespace. */
1214:
1.328 schwarze 1215: ep = strchr(stesc--, '\0') - 1;
1216: if (*ep == '\n') {
1.303 schwarze 1217: done = 1;
1.328 schwarze 1218: ep--;
1.303 schwarze 1219: }
1.328 schwarze 1220: if (*ep == ' ' || *ep == '\t')
1.303 schwarze 1221: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1.328 schwarze 1222: ln, ep - buf->buf, NULL);
1223:
1224: /*
1225: * Save comments preceding the title macro
1226: * in the syntax tree.
1227: */
1228:
1229: if (r->format == 0) {
1230: while (*ep == ' ' || *ep == '\t')
1231: ep--;
1232: ep[1] = '\0';
1233: n = roff_node_alloc(r->man,
1234: ln, stesc + 1 - buf->buf,
1235: ROFFT_COMMENT, TOKEN_NONE);
1236: n->string = mandoc_strdup(stesc + 2);
1237: roff_node_append(r->man, n);
1238: n->flags |= NODE_VALID | NODE_ENDED;
1239: r->man->next = ROFF_NEXT_SIBLING;
1240: }
1241:
1.334 schwarze 1242: /* Line continuation with comment. */
1243:
1244: if (stesc[1] == '#') {
1245: *stesc = '\0';
1.340 schwarze 1246: return ROFF_IGN | ROFF_APPEND;
1.334 schwarze 1247: }
1248:
1249: /* Discard normal comments. */
1.328 schwarze 1250:
1.335 schwarze 1251: while (stesc > start && stesc[-1] == ' ' &&
1252: (stesc == start + 1 || stesc[-2] != '\\'))
1.303 schwarze 1253: stesc--;
1254: *stesc = '\0';
1255: break;
1256: }
1257: if (stesc == start)
1258: return ROFF_CONT;
1259: stesc--;
1260:
1261: /* Notice the end of the input. */
1262:
1263: if (*stesc == '\n') {
1264: *stesc-- = '\0';
1265: done = 1;
1266: }
1267:
1.170 schwarze 1268: expand_count = 0;
1.303 schwarze 1269: while (stesc >= start) {
1.170 schwarze 1270:
1.205 schwarze 1271: /* Search backwards for the next backslash. */
1272:
1.303 schwarze 1273: if (*stesc != r->escape) {
1274: if (*stesc == '\\') {
1275: *stesc = '\0';
1276: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1277: buf->buf, stesc + 1) + 1;
1278: start = nbuf + pos;
1279: stesc = nbuf + (stesc - buf->buf);
1280: free(buf->buf);
1281: buf->buf = nbuf;
1282: }
1283: stesc--;
1.205 schwarze 1284: continue;
1.303 schwarze 1285: }
1.205 schwarze 1286:
1287: /* If it is escaped, skip it. */
1288:
1289: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1290: if (*cp != r->escape)
1.205 schwarze 1291: break;
1292:
1.238 schwarze 1293: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1294: while (stesc > cp)
1295: *stesc-- = '\\';
1.205 schwarze 1296: continue;
1.303 schwarze 1297: } else if (stesc[1] != '\0') {
1298: *stesc = '\\';
1299: } else {
1300: *stesc-- = '\0';
1301: if (done)
1302: continue;
1303: else
1.340 schwarze 1304: return ROFF_IGN | ROFF_APPEND;
1.205 schwarze 1305: }
1.108 schwarze 1306:
1.206 schwarze 1307: /* Decide whether to expand or to check only. */
1.108 schwarze 1308:
1.206 schwarze 1309: term = '\0';
1.205 schwarze 1310: cp = stesc + 1;
1.181 schwarze 1311: switch (*cp) {
1.207 schwarze 1312: case '*':
1.339 schwarze 1313: case '$':
1.181 schwarze 1314: res = NULL;
1315: break;
1.207 schwarze 1316: case 'B':
1317: case 'w':
1.206 schwarze 1318: term = cp[1];
1319: /* FALLTHROUGH */
1.207 schwarze 1320: case 'n':
1.327 schwarze 1321: sign = cp[1];
1322: if (sign == '+' || sign == '-')
1323: cp++;
1.181 schwarze 1324: res = ubuf;
1325: break;
1326: default:
1.237 schwarze 1327: esc = mandoc_escape(&cp, &stnam, &inaml);
1328: if (esc == ESCAPE_ERROR ||
1329: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1330: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1331: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1332: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1333: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1334: stesc--;
1.205 schwarze 1335: continue;
1.152 kristaps 1336: }
1337:
1.205 schwarze 1338: if (EXPAND_LIMIT < ++expand_count) {
1339: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1340: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1341: return ROFF_IGN;
1.205 schwarze 1342: }
1.108 schwarze 1343:
1344: /*
1345: * The third character decides the length
1.181 schwarze 1346: * of the name of the string or register.
1.108 schwarze 1347: * Save a pointer to the name.
1348: */
1349:
1.238 schwarze 1350: if (term == '\0') {
1.206 schwarze 1351: switch (*++cp) {
1.207 schwarze 1352: case '\0':
1.206 schwarze 1353: maxl = 0;
1354: break;
1.207 schwarze 1355: case '(':
1.206 schwarze 1356: cp++;
1357: maxl = 2;
1358: break;
1.207 schwarze 1359: case '[':
1.206 schwarze 1360: cp++;
1361: term = ']';
1362: maxl = 0;
1363: break;
1364: default:
1365: maxl = 1;
1366: break;
1367: }
1368: } else {
1369: cp += 2;
1.94 kristaps 1370: maxl = 0;
1371: }
1.108 schwarze 1372: stnam = cp;
1.94 kristaps 1373:
1.108 schwarze 1374: /* Advance to the end of the name. */
1.94 kristaps 1375:
1.253 schwarze 1376: naml = 0;
1.218 schwarze 1377: arg_complete = 1;
1.253 schwarze 1378: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1379: if (*cp == '\0') {
1.219 schwarze 1380: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1381: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1382: arg_complete = 0;
1.206 schwarze 1383: break;
1.153 kristaps 1384: }
1.238 schwarze 1385: if (maxl == 0 && *cp == term) {
1.206 schwarze 1386: cp++;
1.253 schwarze 1387: break;
1388: }
1389: if (*cp++ != '\\' || stesc[1] != 'w') {
1390: naml++;
1391: continue;
1392: }
1393: switch (mandoc_escape(&cp, NULL, NULL)) {
1394: case ESCAPE_SPECIAL:
1395: case ESCAPE_UNICODE:
1396: case ESCAPE_NUMBERED:
1397: case ESCAPE_OVERSTRIKE:
1398: naml++;
1399: break;
1400: default:
1.94 kristaps 1401: break;
1.206 schwarze 1402: }
1.94 kristaps 1403: }
1404:
1.108 schwarze 1405: /*
1406: * Retrieve the replacement string; if it is
1407: * undefined, resume searching for escapes.
1408: */
1409:
1.206 schwarze 1410: switch (stesc[1]) {
1.207 schwarze 1411: case '*':
1.315 schwarze 1412: if (arg_complete) {
1413: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1414: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1415:
1416: /*
1417: * If not overriden, let \*(.T
1418: * through to the formatters.
1419: */
1420:
1421: if (res == NULL && naml == 2 &&
1422: stnam[0] == '.' && stnam[1] == 'T') {
1423: roff_setstrn(&r->strtab,
1424: ".T", 2, NULL, 0, 0);
1425: stesc--;
1426: continue;
1427: }
1.315 schwarze 1428: }
1.206 schwarze 1429: break;
1.339 schwarze 1430: case '$':
1431: if (r->mstackpos < 0) {
1432: mandoc_vmsg(MANDOCERR_ARG_UNDEF,
1433: r->parse, ln, (int)(stesc - buf->buf),
1434: "%.3s", stesc);
1435: break;
1436: }
1437: ctx = r->mstack + r->mstackpos;
1438: npos = stesc[2] - '1';
1439: if (npos >= 0 && npos <= 8) {
1440: res = npos < ctx->argc ?
1441: ctx->argv[npos] : "";
1442: break;
1443: }
1444: if (stesc[2] == '*')
1445: quote_args = 0;
1446: else if (stesc[2] == '@')
1447: quote_args = 1;
1448: else {
1449: mandoc_vmsg(MANDOCERR_ARG_NONUM,
1450: r->parse, ln, (int)(stesc - buf->buf),
1451: "%.3s", stesc);
1452: break;
1453: }
1454: asz = 0;
1455: for (npos = 0; npos < ctx->argc; npos++) {
1456: if (npos)
1457: asz++; /* blank */
1458: if (quote_args)
1459: asz += 2; /* quotes */
1460: asz += strlen(ctx->argv[npos]);
1461: }
1462: if (asz != 3) {
1463: rsz = buf->sz - (stesc - buf->buf) - 3;
1464: if (asz < 3)
1465: memmove(stesc + asz, stesc + 3, rsz);
1466: buf->sz += asz - 3;
1467: nbuf = mandoc_realloc(buf->buf, buf->sz);
1468: start = nbuf + pos;
1469: stesc = nbuf + (stesc - buf->buf);
1470: buf->buf = nbuf;
1471: if (asz > 3)
1472: memmove(stesc + asz, stesc + 3, rsz);
1473: }
1474: for (npos = 0; npos < ctx->argc; npos++) {
1475: if (npos)
1476: *stesc++ = ' ';
1477: if (quote_args)
1478: *stesc++ = '"';
1479: cp = ctx->argv[npos];
1480: while (*cp != '\0')
1481: *stesc++ = *cp++;
1482: if (quote_args)
1483: *stesc++ = '"';
1484: }
1485: continue;
1.207 schwarze 1486: case 'B':
1.206 schwarze 1487: npos = 0;
1.218 schwarze 1488: ubuf[0] = arg_complete &&
1.261 schwarze 1489: roff_evalnum(r, ln, stnam, &npos,
1490: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1491: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1492: ubuf[1] = '\0';
1493: break;
1.207 schwarze 1494: case 'n':
1.218 schwarze 1495: if (arg_complete)
1496: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1497: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1498: else
1499: ubuf[0] = '\0';
1.206 schwarze 1500: break;
1.207 schwarze 1501: case 'w':
1.218 schwarze 1502: /* use even incomplete args */
1.208 schwarze 1503: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1504: 24 * (int)naml);
1505: break;
1506: }
1.94 kristaps 1507:
1.238 schwarze 1508: if (res == NULL) {
1.339 schwarze 1509: if (stesc[1] == '*')
1510: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1511: r->parse, ln, (int)(stesc - buf->buf),
1512: "%.*s", (int)naml, stnam);
1.142 kristaps 1513: res = "";
1.246 schwarze 1514: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1515: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1516: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1517: return ROFF_IGN;
1.94 kristaps 1518: }
1519:
1.108 schwarze 1520: /* Replace the escape sequence by the string. */
1521:
1.209 schwarze 1522: *stesc = '\0';
1.238 schwarze 1523: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1524: buf->buf, res, cp) + 1;
1.94 kristaps 1525:
1.205 schwarze 1526: /* Prepare for the next replacement. */
1.94 kristaps 1527:
1.205 schwarze 1528: start = nbuf + pos;
1.238 schwarze 1529: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1530: free(buf->buf);
1531: buf->buf = nbuf;
1.154 kristaps 1532: }
1.277 schwarze 1533: return ROFF_CONT;
1.154 kristaps 1534: }
1535:
1536: /*
1.275 schwarze 1537: * Process text streams.
1.154 kristaps 1538: */
1.340 schwarze 1539: static int
1.305 schwarze 1540: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1541: {
1542: size_t sz;
1543: const char *start;
1.178 schwarze 1544: char *p;
1545: int isz;
1.154 kristaps 1546: enum mandoc_esc esc;
1547:
1.275 schwarze 1548: /* Spring the input line trap. */
1549:
1550: if (roffit_lines == 1) {
1551: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1552: free(buf->buf);
1553: buf->buf = p;
1554: buf->sz = isz + 1;
1555: *offs = 0;
1556: free(roffit_macro);
1557: roffit_lines = 0;
1.277 schwarze 1558: return ROFF_REPARSE;
1.275 schwarze 1559: } else if (roffit_lines > 1)
1560: --roffit_lines;
1561:
1.305 schwarze 1562: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1563: if (roffce_lines < 1) {
1564: r->man->last = roffce_node;
1565: r->man->next = ROFF_NEXT_SIBLING;
1566: roffce_lines = 0;
1567: roffce_node = NULL;
1568: } else
1569: roffce_lines--;
1570: }
1571:
1.275 schwarze 1572: /* Convert all breakable hyphens into ASCII_HYPH. */
1573:
1.238 schwarze 1574: start = p = buf->buf + pos;
1.154 kristaps 1575:
1.238 schwarze 1576: while (*p != '\0') {
1.154 kristaps 1577: sz = strcspn(p, "-\\");
1578: p += sz;
1579:
1.238 schwarze 1580: if (*p == '\0')
1.159 kristaps 1581: break;
1582:
1.238 schwarze 1583: if (*p == '\\') {
1.154 kristaps 1584: /* Skip over escapes. */
1585: p++;
1.189 schwarze 1586: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1587: if (esc == ESCAPE_ERROR)
1.154 kristaps 1588: break;
1.264 schwarze 1589: while (*p == '-')
1590: p++;
1.155 kristaps 1591: continue;
1.159 kristaps 1592: } else if (p == start) {
1.158 kristaps 1593: p++;
1.155 kristaps 1594: continue;
1.158 kristaps 1595: }
1.155 kristaps 1596:
1.171 schwarze 1597: if (isalpha((unsigned char)p[-1]) &&
1598: isalpha((unsigned char)p[1]))
1.155 kristaps 1599: *p = ASCII_HYPH;
1600: p++;
1.94 kristaps 1601: }
1.277 schwarze 1602: return ROFF_CONT;
1.94 kristaps 1603: }
1604:
1.340 schwarze 1605: int
1.238 schwarze 1606: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1607: {
1.294 schwarze 1608: enum roff_tok t;
1.340 schwarze 1609: int e;
1.238 schwarze 1610: int pos; /* parse point */
1.243 schwarze 1611: int spos; /* saved parse point for messages */
1.238 schwarze 1612: int ppos; /* original offset in buf->buf */
1613: int ctl; /* macro line (boolean) */
1614:
1615: ppos = pos = *offs;
1.79 kristaps 1616:
1.230 schwarze 1617: /* Handle in-line equation delimiters. */
1618:
1.236 schwarze 1619: if (r->tbl == NULL &&
1620: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1621: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1622: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1623: if (e == ROFF_REPARSE)
1.277 schwarze 1624: return e;
1.230 schwarze 1625: assert(e == ROFF_CONT);
1626: }
1627:
1628: /* Expand some escape sequences. */
1.94 kristaps 1629:
1.238 schwarze 1630: e = roff_res(r, buf, ln, pos);
1.340 schwarze 1631: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1632: return e;
1.238 schwarze 1633: assert(e == ROFF_CONT);
1.94 kristaps 1634:
1.238 schwarze 1635: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1636:
1.94 kristaps 1637: /*
1.79 kristaps 1638: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1639: * text through the macro's filter.
1640: * Equations process all content themselves.
1641: * Tables process almost all content themselves, but we want
1642: * to warn about macros before passing it there.
1.79 kristaps 1643: */
1.74 kristaps 1644:
1.252 schwarze 1645: if (r->last != NULL && ! ctl) {
1.78 kristaps 1646: t = r->last->tok;
1.238 schwarze 1647: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1648: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1649: return e;
1.340 schwarze 1650: e &= ~ROFF_MASK;
1651: } else
1652: e = ROFF_IGN;
1.319 schwarze 1653: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1654: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1655: return e;
1.319 schwarze 1656: }
1.321 schwarze 1657: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1658: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 ! schwarze 1659: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1660: return e;
1.321 schwarze 1661: }
1.252 schwarze 1662: if ( ! ctl)
1.340 schwarze 1663: return roff_parsetext(r, buf, pos, offs) | e;
1.228 schwarze 1664:
1665: /* Skip empty request lines. */
1666:
1.238 schwarze 1667: if (buf->buf[pos] == '"') {
1.228 schwarze 1668: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1669: ln, pos, NULL);
1.277 schwarze 1670: return ROFF_IGN;
1.238 schwarze 1671: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1672: return ROFF_IGN;
1.67 kristaps 1673:
1.79 kristaps 1674: /*
1675: * If a scope is open, go to the child handler for that macro,
1676: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1677: * Don't do so if an equation is open.
1.79 kristaps 1678: */
1.78 kristaps 1679:
1.79 kristaps 1680: if (r->last) {
1681: t = r->last->tok;
1.277 schwarze 1682: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1683: }
1.78 kristaps 1684:
1.243 schwarze 1685: /* No scope is open. This is a new request or macro. */
1686:
1687: spos = pos;
1688: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1689:
1690: /* Tables ignore most macros. */
1691:
1.308 schwarze 1692: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1693: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.243 schwarze 1694: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1695: ln, pos, buf->buf + spos);
1.308 schwarze 1696: if (t != TOKEN_NONE)
1.277 schwarze 1697: return ROFF_IGN;
1.257 schwarze 1698: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1699: pos++;
1.291 schwarze 1700: while (buf->buf[pos] == ' ')
1.257 schwarze 1701: pos++;
1.321 schwarze 1702: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 ! schwarze 1703: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1704: return ROFF_IGN;
1.243 schwarze 1705: }
1706:
1.305 schwarze 1707: /* For now, let high level macros abort .ce mode. */
1708:
1709: if (ctl && roffce_node != NULL &&
1.324 schwarze 1710: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1711: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1712: r->man->last = roffce_node;
1713: r->man->next = ROFF_NEXT_SIBLING;
1714: roffce_lines = 0;
1715: roffce_node = NULL;
1716: }
1717:
1.79 kristaps 1718: /*
1.243 schwarze 1719: * This is neither a roff request nor a user-defined macro.
1720: * Let the standard macro set parsers handle it.
1.79 kristaps 1721: */
1.67 kristaps 1722:
1.294 schwarze 1723: if (t == TOKEN_NONE)
1.277 schwarze 1724: return ROFF_CONT;
1.243 schwarze 1725:
1726: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1727:
1.296 schwarze 1728: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1729: }
1730:
1.339 schwarze 1731: /*
1732: * Internal interface function to tell the roff parser that execution
1733: * of the current macro ended. This is required because macro
1734: * definitions usually do not end with a .return request.
1735: */
1736: void
1737: roff_userret(struct roff *r)
1738: {
1739: struct mctx *ctx;
1740: int i;
1741:
1742: assert(r->mstackpos >= 0);
1743: ctx = r->mstack + r->mstackpos;
1744: for (i = 0; i < ctx->argc; i++)
1745: free(ctx->argv[i]);
1746: ctx->argc = 0;
1747: r->mstackpos--;
1748: }
1749:
1.117 kristaps 1750: void
1.74 kristaps 1751: roff_endparse(struct roff *r)
1752: {
1.321 schwarze 1753: if (r->last != NULL)
1.221 schwarze 1754: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1755: r->last->line, r->last->col,
1.295 schwarze 1756: roff_name[r->last->tok]);
1.117 kristaps 1757:
1.321 schwarze 1758: if (r->eqn != NULL) {
1.221 schwarze 1759: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.319 schwarze 1760: r->eqn->node->line, r->eqn->node->pos, "EQ");
1761: eqn_parse(r->eqn);
1762: r->eqn = NULL;
1.125 kristaps 1763: }
1764:
1.321 schwarze 1765: if (r->tbl != NULL) {
1.346 ! schwarze 1766: tbl_end(r->tbl, 1);
1.321 schwarze 1767: r->tbl = NULL;
1.117 kristaps 1768: }
1.67 kristaps 1769: }
1770:
1771: /*
1772: * Parse a roff node's type from the input buffer. This must be in the
1773: * form of ".foo xxx" in the usual way.
1774: */
1.294 schwarze 1775: static enum roff_tok
1.214 schwarze 1776: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1777: {
1.214 schwarze 1778: char *cp;
1.106 kristaps 1779: const char *mac;
1780: size_t maclen;
1.315 schwarze 1781: int deftype;
1.294 schwarze 1782: enum roff_tok t;
1.67 kristaps 1783:
1.214 schwarze 1784: cp = buf + *pos;
1785:
1786: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1787: return TOKEN_NONE;
1.67 kristaps 1788:
1.214 schwarze 1789: mac = cp;
1790: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1791:
1.315 schwarze 1792: deftype = ROFFDEF_USER | ROFFDEF_REN;
1793: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1794: switch (deftype) {
1795: case ROFFDEF_USER:
1796: t = ROFF_USERDEF;
1797: break;
1798: case ROFFDEF_REN:
1799: t = ROFF_RENAMED;
1800: break;
1801: default:
1802: t = roffhash_find(r->reqtab, mac, maclen);
1803: break;
1804: }
1.294 schwarze 1805: if (t != TOKEN_NONE)
1.214 schwarze 1806: *pos = cp - buf;
1.325 schwarze 1807: else if (deftype == ROFFDEF_UNDEF) {
1808: /* Using an undefined macro defines it to be empty. */
1809: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1810: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1811: }
1.277 schwarze 1812: return t;
1.67 kristaps 1813: }
1814:
1.266 schwarze 1815: /* --- handling of request blocks ----------------------------------------- */
1816:
1.340 schwarze 1817: static int
1.76 kristaps 1818: roff_cblock(ROFF_ARGS)
1.67 kristaps 1819: {
1820:
1.79 kristaps 1821: /*
1822: * A block-close `..' should only be invoked as a child of an
1823: * ignore macro, otherwise raise a warning and just ignore it.
1824: */
1825:
1.238 schwarze 1826: if (r->last == NULL) {
1.221 schwarze 1827: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1828: ln, ppos, "..");
1.277 schwarze 1829: return ROFF_IGN;
1.76 kristaps 1830: }
1.67 kristaps 1831:
1.81 kristaps 1832: switch (r->last->tok) {
1.207 schwarze 1833: case ROFF_am:
1.220 schwarze 1834: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1835: case ROFF_ami:
1836: case ROFF_de:
1.108 schwarze 1837: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1838: case ROFF_dei:
1839: case ROFF_ig:
1.81 kristaps 1840: break;
1841: default:
1.221 schwarze 1842: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1843: ln, ppos, "..");
1.277 schwarze 1844: return ROFF_IGN;
1.76 kristaps 1845: }
1.67 kristaps 1846:
1.238 schwarze 1847: if (buf->buf[pos] != '\0')
1.217 schwarze 1848: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1849: ".. %s", buf->buf + pos);
1.71 kristaps 1850:
1851: roffnode_pop(r);
1.76 kristaps 1852: roffnode_cleanscope(r);
1.277 schwarze 1853: return ROFF_IGN;
1.71 kristaps 1854:
1.67 kristaps 1855: }
1856:
1.340 schwarze 1857: static int
1.76 kristaps 1858: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1859: {
1.340 schwarze 1860: int inloop;
1.67 kristaps 1861:
1.340 schwarze 1862: inloop = 0;
1863: while (r->last != NULL) {
1.173 schwarze 1864: if (--r->last->endspan != 0)
1.76 kristaps 1865: break;
1.340 schwarze 1866: inloop += roffnode_pop(r);
1.76 kristaps 1867: }
1.340 schwarze 1868: return inloop;
1.67 kristaps 1869: }
1870:
1.340 schwarze 1871: static int
1.195 schwarze 1872: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1873: {
1.76 kristaps 1874: if (NULL == r->last) {
1.221 schwarze 1875: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1876: ln, ppos, "\\}");
1.340 schwarze 1877: return 0;
1.76 kristaps 1878: }
1879:
1.82 kristaps 1880: switch (r->last->tok) {
1.207 schwarze 1881: case ROFF_el:
1882: case ROFF_ie:
1883: case ROFF_if:
1.340 schwarze 1884: case ROFF_while:
1.82 kristaps 1885: break;
1886: default:
1.221 schwarze 1887: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1888: ln, ppos, "\\}");
1.340 schwarze 1889: return 0;
1.75 kristaps 1890: }
1891:
1.76 kristaps 1892: if (r->last->endspan > -1) {
1.221 schwarze 1893: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1894: ln, ppos, "\\}");
1.340 schwarze 1895: return 0;
1.76 kristaps 1896: }
1897:
1.340 schwarze 1898: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 1899: }
1900:
1.340 schwarze 1901: static int
1.80 kristaps 1902: roff_block(ROFF_ARGS)
1.76 kristaps 1903: {
1.315 schwarze 1904: const char *name, *value;
1905: char *call, *cp, *iname, *rname;
1906: size_t csz, namesz, rsz;
1907: int deftype;
1.106 kristaps 1908:
1.220 schwarze 1909: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1910:
1.238 schwarze 1911: if (tok == ROFF_de1)
1.220 schwarze 1912: tok = ROFF_de;
1.251 schwarze 1913: else if (tok == ROFF_dei1)
1914: tok = ROFF_dei;
1.238 schwarze 1915: else if (tok == ROFF_am1)
1.220 schwarze 1916: tok = ROFF_am;
1.251 schwarze 1917: else if (tok == ROFF_ami1)
1918: tok = ROFF_ami;
1.220 schwarze 1919:
1920: /* Parse the macro name argument. */
1921:
1.238 schwarze 1922: cp = buf->buf + pos;
1923: if (tok == ROFF_ig) {
1.220 schwarze 1924: iname = NULL;
1925: namesz = 0;
1926: } else {
1927: iname = cp;
1928: namesz = roff_getname(r, &cp, ln, ppos);
1929: iname[namesz] = '\0';
1930: }
1.107 kristaps 1931:
1.220 schwarze 1932: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1933:
1.238 schwarze 1934: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1935: deftype = ROFFDEF_USER;
1936: name = roff_getstrn(r, iname, namesz, &deftype);
1937: if (name == NULL) {
1.220 schwarze 1938: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1939: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1940: "%.*s", (int)namesz, iname);
1941: namesz = 0;
1942: } else
1943: namesz = strlen(name);
1944: } else
1945: name = iname;
1.107 kristaps 1946:
1.238 schwarze 1947: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1948: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1949: ln, ppos, roff_name[tok]);
1.277 schwarze 1950: return ROFF_IGN;
1.220 schwarze 1951: }
1.80 kristaps 1952:
1.106 kristaps 1953: roffnode_push(r, tok, name, ln, ppos);
1954:
1955: /*
1956: * At the beginning of a `de' macro, clear the existing string
1957: * with the same name, if there is one. New content will be
1.193 schwarze 1958: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1959: */
1.107 kristaps 1960:
1.311 schwarze 1961: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 1962: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 1963: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 1964: } else if (tok == ROFF_am || tok == ROFF_ami) {
1965: deftype = ROFFDEF_ANY;
1966: value = roff_getstrn(r, iname, namesz, &deftype);
1967: switch (deftype) { /* Before appending, ... */
1968: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1969: roff_setstrn(&r->strtab, name, namesz,
1970: value, strlen(value), 0);
1971: break;
1972: case ROFFDEF_REN: /* call original standard macro. */
1973: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1974: (int)strlen(value), value);
1975: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1976: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1977: free(call);
1978: break;
1979: case ROFFDEF_STD: /* rename and call standard macro. */
1980: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1981: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1982: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1983: (int)rsz, rname);
1984: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1985: free(call);
1986: free(rname);
1987: break;
1988: default:
1989: break;
1990: }
1.311 schwarze 1991: }
1.76 kristaps 1992:
1.238 schwarze 1993: if (*cp == '\0')
1.277 schwarze 1994: return ROFF_IGN;
1.78 kristaps 1995:
1.220 schwarze 1996: /* Get the custom end marker. */
1.107 kristaps 1997:
1.220 schwarze 1998: iname = cp;
1.213 schwarze 1999: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 2000:
2001: /* Resolve the end marker if it is indirect. */
2002:
1.238 schwarze 2003: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2004: deftype = ROFFDEF_USER;
2005: name = roff_getstrn(r, iname, namesz, &deftype);
2006: if (name == NULL) {
1.220 schwarze 2007: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 2008: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 2009: "%.*s", (int)namesz, iname);
2010: namesz = 0;
2011: } else
2012: namesz = strlen(name);
2013: } else
2014: name = iname;
2015:
1.213 schwarze 2016: if (namesz)
2017: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2018:
1.238 schwarze 2019: if (*cp != '\0')
1.217 schwarze 2020: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 2021: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2022:
1.277 schwarze 2023: return ROFF_IGN;
1.78 kristaps 2024: }
2025:
1.340 schwarze 2026: static int
1.80 kristaps 2027: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2028: {
1.294 schwarze 2029: enum roff_tok t;
1.79 kristaps 2030: int i, j;
2031:
2032: /*
2033: * First check whether a custom macro exists at this level. If
2034: * it does, then check against it. This is some of groff's
2035: * stranger behaviours. If we encountered a custom end-scope
2036: * tag and that tag also happens to be a "real" macro, then we
2037: * need to try interpreting it again as a real macro. If it's
2038: * not, then return ignore. Else continue.
2039: */
2040:
2041: if (r->last->end) {
1.130 kristaps 2042: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2043: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2044: break;
2045:
1.238 schwarze 2046: if (r->last->end[j] == '\0' &&
2047: (buf->buf[i] == '\0' ||
2048: buf->buf[i] == ' ' ||
2049: buf->buf[i] == '\t')) {
1.79 kristaps 2050: roffnode_pop(r);
2051: roffnode_cleanscope(r);
2052:
1.238 schwarze 2053: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2054: i++;
2055:
2056: pos = i;
1.238 schwarze 2057: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2058: TOKEN_NONE)
1.277 schwarze 2059: return ROFF_RERUN;
2060: return ROFF_IGN;
1.79 kristaps 2061: }
2062: }
2063:
2064: /*
2065: * If we have no custom end-query or lookup failed, then try
2066: * pulling it out of the hashtable.
2067: */
2068:
1.238 schwarze 2069: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 2070:
1.238 schwarze 2071: if (t != ROFF_cblock) {
2072: if (tok != ROFF_ig)
2073: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 2074: return ROFF_IGN;
1.106 kristaps 2075: }
1.79 kristaps 2076:
1.277 schwarze 2077: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2078: }
2079:
1.340 schwarze 2080: static int
1.80 kristaps 2081: roff_block_text(ROFF_ARGS)
1.78 kristaps 2082: {
2083:
1.238 schwarze 2084: if (tok != ROFF_ig)
2085: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2086:
1.277 schwarze 2087: return ROFF_IGN;
1.78 kristaps 2088: }
2089:
1.340 schwarze 2090: static int
1.82 kristaps 2091: roff_cond_sub(ROFF_ARGS)
2092: {
1.340 schwarze 2093: char *ep;
2094: int endloop, irc, rr;
1.294 schwarze 2095: enum roff_tok t;
1.82 kristaps 2096:
1.340 schwarze 2097: irc = ROFF_IGN;
1.82 kristaps 2098: rr = r->last->rule;
1.340 schwarze 2099: endloop = tok != ROFF_while ? ROFF_IGN :
2100: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2101: if (roffnode_cleanscope(r))
2102: irc |= endloop;
1.144 kristaps 2103:
1.196 schwarze 2104: /*
2105: * If `\}' occurs on a macro line without a preceding macro,
2106: * drop the line completely.
2107: */
2108:
1.238 schwarze 2109: ep = buf->buf + pos;
2110: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 2111: rr = 0;
1.196 schwarze 2112:
1.343 schwarze 2113: /*
2114: * The closing delimiter `\}' rewinds the conditional scope
2115: * but is otherwise ignored when interpreting the line.
2116: */
1.144 kristaps 2117:
1.238 schwarze 2118: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2119: switch (ep[1]) {
2120: case '}':
2121: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2122: if (roff_ccond(r, ln, ep - buf->buf))
2123: irc |= endloop;
1.318 schwarze 2124: break;
2125: case '\0':
2126: ++ep;
2127: break;
2128: default:
2129: ep += 2;
2130: break;
1.197 schwarze 2131: }
1.177 schwarze 2132: }
1.318 schwarze 2133:
2134: /*
2135: * Fully handle known macros when they are structurally
2136: * required or when the conditional evaluated to true.
2137: */
2138:
2139: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.340 schwarze 2140: irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
2141: (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
2142: rr ? ROFF_CONT : ROFF_IGN;
2143: return irc;
1.82 kristaps 2144: }
2145:
1.340 schwarze 2146: static int
1.82 kristaps 2147: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2148: {
1.140 kristaps 2149: char *ep;
1.340 schwarze 2150: int endloop, irc, rr;
1.82 kristaps 2151:
1.340 schwarze 2152: irc = ROFF_IGN;
1.82 kristaps 2153: rr = r->last->rule;
1.340 schwarze 2154: endloop = tok != ROFF_while ? ROFF_IGN :
2155: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2156: if (roffnode_cleanscope(r))
2157: irc |= endloop;
1.82 kristaps 2158:
1.343 schwarze 2159: /*
2160: * If `\}' occurs on a text line with neither preceding
2161: * nor following characters, drop the line completely.
2162: */
2163:
1.238 schwarze 2164: ep = buf->buf + pos;
1.343 schwarze 2165: if (strcmp(ep, "\\}") == 0)
2166: rr = 0;
2167:
2168: /*
2169: * The closing delimiter `\}' rewinds the conditional scope
2170: * but is otherwise ignored when interpreting the line.
2171: */
2172:
1.238 schwarze 2173: while ((ep = strchr(ep, '\\')) != NULL) {
1.343 schwarze 2174: switch (ep[1]) {
2175: case '}':
2176: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2177: if (roff_ccond(r, ln, ep - buf->buf))
1.340 schwarze 2178: irc |= endloop;
1.343 schwarze 2179: break;
2180: case '\0':
2181: ++ep;
2182: break;
2183: default:
2184: ep += 2;
2185: break;
1.197 schwarze 2186: }
1.78 kristaps 2187: }
1.340 schwarze 2188: if (rr)
2189: irc |= ROFF_CONT;
2190: return irc;
1.74 kristaps 2191: }
2192:
1.266 schwarze 2193: /* --- handling of numeric and conditional expressions -------------------- */
2194:
1.204 schwarze 2195: /*
2196: * Parse a single signed integer number. Stop at the first non-digit.
2197: * If there is at least one digit, return success and advance the
2198: * parse point, else return failure and let the parse point unchanged.
2199: * Ignore overflows, treat them just like the C language.
2200: */
1.184 schwarze 2201: static int
1.261 schwarze 2202: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2203: {
1.261 schwarze 2204: int myres, scaled, n, p;
1.206 schwarze 2205:
2206: if (NULL == res)
2207: res = &myres;
1.184 schwarze 2208:
2209: p = *pos;
2210: n = v[p] == '-';
1.261 schwarze 2211: if (n || v[p] == '+')
1.184 schwarze 2212: p++;
2213:
1.261 schwarze 2214: if (flags & ROFFNUM_WHITE)
2215: while (isspace((unsigned char)v[p]))
2216: p++;
2217:
1.184 schwarze 2218: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2219: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2220: if (p == *pos + n)
2221: return 0;
2222:
2223: if (n)
2224: *res = -*res;
2225:
1.254 schwarze 2226: /* Each number may be followed by one optional scaling unit. */
2227:
2228: switch (v[p]) {
2229: case 'f':
1.261 schwarze 2230: scaled = *res * 65536;
1.254 schwarze 2231: break;
2232: case 'i':
1.261 schwarze 2233: scaled = *res * 240;
1.254 schwarze 2234: break;
2235: case 'c':
1.261 schwarze 2236: scaled = *res * 240 / 2.54;
1.254 schwarze 2237: break;
2238: case 'v':
2239: case 'P':
1.261 schwarze 2240: scaled = *res * 40;
1.254 schwarze 2241: break;
2242: case 'm':
2243: case 'n':
1.261 schwarze 2244: scaled = *res * 24;
1.254 schwarze 2245: break;
2246: case 'p':
1.261 schwarze 2247: scaled = *res * 10 / 3;
1.254 schwarze 2248: break;
2249: case 'u':
1.261 schwarze 2250: scaled = *res;
1.254 schwarze 2251: break;
2252: case 'M':
1.261 schwarze 2253: scaled = *res * 6 / 25;
1.254 schwarze 2254: break;
2255: default:
1.261 schwarze 2256: scaled = *res;
1.254 schwarze 2257: p--;
2258: break;
2259: }
1.261 schwarze 2260: if (flags & ROFFNUM_SCALE)
2261: *res = scaled;
1.254 schwarze 2262:
2263: *pos = p + 1;
1.277 schwarze 2264: return 1;
1.184 schwarze 2265: }
2266:
1.198 schwarze 2267: /*
2268: * Evaluate a string comparison condition.
2269: * The first character is the delimiter.
2270: * Succeed if the string up to its second occurrence
2271: * matches the string up to its third occurence.
2272: * Advance the cursor after the third occurrence
2273: * or lacking that, to the end of the line.
2274: */
2275: static int
2276: roff_evalstrcond(const char *v, int *pos)
2277: {
2278: const char *s1, *s2, *s3;
2279: int match;
2280:
2281: match = 0;
2282: s1 = v + *pos; /* initial delimiter */
2283: s2 = s1 + 1; /* for scanning the first string */
2284: s3 = strchr(s2, *s1); /* for scanning the second string */
2285:
2286: if (NULL == s3) /* found no middle delimiter */
2287: goto out;
2288:
2289: while ('\0' != *++s3) {
2290: if (*s2 != *s3) { /* mismatch */
2291: s3 = strchr(s3, *s1);
2292: break;
2293: }
2294: if (*s3 == *s1) { /* found the final delimiter */
2295: match = 1;
2296: break;
2297: }
2298: s2++;
2299: }
2300:
2301: out:
2302: if (NULL == s3)
2303: s3 = strchr(s2, '\0');
1.242 schwarze 2304: else if (*s3 != '\0')
1.198 schwarze 2305: s3++;
2306: *pos = s3 - v;
1.277 schwarze 2307: return match;
1.198 schwarze 2308: }
2309:
1.204 schwarze 2310: /*
2311: * Evaluate an optionally negated single character, numerical,
2312: * or string condition.
2313: */
1.198 schwarze 2314: static int
1.271 schwarze 2315: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2316: {
1.336 schwarze 2317: const char *start, *end;
2318: char *cp, *name;
2319: size_t sz;
2320: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2321:
1.198 schwarze 2322: if ('!' == v[*pos]) {
2323: wanttrue = 0;
2324: (*pos)++;
2325: } else
2326: wanttrue = 1;
2327:
1.88 kristaps 2328: switch (v[*pos]) {
1.240 schwarze 2329: case '\0':
1.277 schwarze 2330: return 0;
1.207 schwarze 2331: case 'n':
2332: case 'o':
1.88 kristaps 2333: (*pos)++;
1.277 schwarze 2334: return wanttrue;
1.207 schwarze 2335: case 'e':
2336: case 't':
1.239 schwarze 2337: case 'v':
1.88 kristaps 2338: (*pos)++;
1.277 schwarze 2339: return !wanttrue;
1.336 schwarze 2340: case 'c':
2341: do {
2342: (*pos)++;
2343: } while (v[*pos] == ' ');
2344:
2345: /*
2346: * Quirk for groff compatibility:
2347: * The horizontal tab is neither available nor unavailable.
2348: */
2349:
2350: if (v[*pos] == '\t') {
2351: (*pos)++;
2352: return 0;
2353: }
2354:
2355: /* Printable ASCII characters are available. */
2356:
2357: if (v[*pos] != '\\') {
2358: (*pos)++;
2359: return wanttrue;
2360: }
2361:
2362: end = v + ++*pos;
2363: switch (mandoc_escape(&end, &start, &len)) {
2364: case ESCAPE_SPECIAL:
2365: istrue = mchars_spec2cp(start, len) != -1;
2366: break;
2367: case ESCAPE_UNICODE:
2368: istrue = 1;
2369: break;
2370: case ESCAPE_NUMBERED:
2371: istrue = mchars_num2char(start, len) != -1;
2372: break;
2373: default:
2374: istrue = !wanttrue;
2375: break;
2376: }
2377: *pos = end - v;
2378: return istrue == wanttrue;
1.310 schwarze 2379: case 'd':
1.271 schwarze 2380: case 'r':
1.310 schwarze 2381: cp = v + *pos + 1;
2382: while (*cp == ' ')
2383: cp++;
2384: name = cp;
2385: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2386: if (sz == 0)
2387: istrue = 0;
2388: else if (v[*pos] == 'r')
2389: istrue = roff_hasregn(r, name, sz);
2390: else {
2391: deftype = ROFFDEF_ANY;
2392: roff_getstrn(r, name, sz, &deftype);
2393: istrue = !!deftype;
2394: }
1.271 schwarze 2395: *pos = cp - v;
1.310 schwarze 2396: return istrue == wanttrue;
1.88 kristaps 2397: default:
2398: break;
2399: }
2400:
1.241 schwarze 2401: savepos = *pos;
1.261 schwarze 2402: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2403: return (number > 0) == wanttrue;
1.241 schwarze 2404: else if (*pos == savepos)
1.277 schwarze 2405: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2406: else
1.277 schwarze 2407: return 0;
1.88 kristaps 2408: }
2409:
1.340 schwarze 2410: static int
1.103 kristaps 2411: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2412: {
1.123 schwarze 2413:
1.277 schwarze 2414: return ROFF_IGN;
1.89 kristaps 2415: }
2416:
1.340 schwarze 2417: static int
1.251 schwarze 2418: roff_insec(ROFF_ARGS)
2419: {
2420:
2421: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2422: ln, ppos, roff_name[tok]);
1.277 schwarze 2423: return ROFF_IGN;
1.251 schwarze 2424: }
2425:
1.340 schwarze 2426: static int
1.251 schwarze 2427: roff_unsupp(ROFF_ARGS)
2428: {
2429:
2430: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2431: ln, ppos, roff_name[tok]);
1.277 schwarze 2432: return ROFF_IGN;
1.251 schwarze 2433: }
2434:
1.340 schwarze 2435: static int
1.82 kristaps 2436: roff_cond(ROFF_ARGS)
1.74 kristaps 2437: {
1.340 schwarze 2438: int irc;
1.173 schwarze 2439:
2440: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2441:
1.207 schwarze 2442: /*
1.134 kristaps 2443: * An `.el' has no conditional body: it will consume the value
2444: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2445: * defaults to DENY.
1.134 kristaps 2446: *
2447: * If we're not an `el', however, then evaluate the conditional.
2448: */
1.133 kristaps 2449:
1.238 schwarze 2450: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2451: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2452: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2453:
1.134 kristaps 2454: /*
2455: * An if-else will put the NEGATION of the current evaluated
2456: * conditional into the stack of rules.
2457: */
2458:
1.238 schwarze 2459: if (tok == ROFF_ie) {
1.223 schwarze 2460: if (r->rstackpos + 1 == r->rstacksz) {
2461: r->rstacksz += 16;
2462: r->rstack = mandoc_reallocarray(r->rstack,
2463: r->rstacksz, sizeof(int));
1.134 kristaps 2464: }
1.198 schwarze 2465: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2466: }
1.88 kristaps 2467:
2468: /* If the parent has false as its rule, then so do we. */
2469:
1.198 schwarze 2470: if (r->last->parent && !r->last->parent->rule)
2471: r->last->rule = 0;
1.88 kristaps 2472:
2473: /*
1.173 schwarze 2474: * Determine scope.
2475: * If there is nothing on the line after the conditional,
2476: * not even whitespace, use next-line scope.
1.340 schwarze 2477: * Except that .while does not support next-line scope.
1.88 kristaps 2478: */
1.74 kristaps 2479:
1.340 schwarze 2480: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2481: r->last->endspan = 2;
2482: goto out;
2483: }
2484:
1.238 schwarze 2485: while (buf->buf[pos] == ' ')
1.173 schwarze 2486: pos++;
2487:
2488: /* An opening brace requests multiline scope. */
1.75 kristaps 2489:
1.238 schwarze 2490: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2491: r->last->endspan = -1;
2492: pos += 2;
1.272 schwarze 2493: while (buf->buf[pos] == ' ')
2494: pos++;
1.173 schwarze 2495: goto out;
1.207 schwarze 2496: }
1.74 kristaps 2497:
1.77 kristaps 2498: /*
1.173 schwarze 2499: * Anything else following the conditional causes
2500: * single-line scope. Warn if the scope contains
2501: * nothing but trailing whitespace.
1.77 kristaps 2502: */
2503:
1.238 schwarze 2504: if (buf->buf[pos] == '\0')
1.216 schwarze 2505: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2506: ln, ppos, roff_name[tok]);
1.77 kristaps 2507:
1.173 schwarze 2508: r->last->endspan = 1;
1.74 kristaps 2509:
1.173 schwarze 2510: out:
1.75 kristaps 2511: *offs = pos;
1.340 schwarze 2512: irc = ROFF_RERUN;
2513: if (tok == ROFF_while)
2514: irc |= ROFF_WHILE;
2515: return irc;
1.83 schwarze 2516: }
2517:
1.340 schwarze 2518: static int
1.92 schwarze 2519: roff_ds(ROFF_ARGS)
2520: {
1.212 schwarze 2521: char *string;
2522: const char *name;
2523: size_t namesz;
1.96 kristaps 2524:
1.251 schwarze 2525: /* Ignore groff compatibility mode for now. */
2526:
2527: if (tok == ROFF_ds1)
2528: tok = ROFF_ds;
2529: else if (tok == ROFF_as1)
2530: tok = ROFF_as;
2531:
1.96 kristaps 2532: /*
1.212 schwarze 2533: * The first word is the name of the string.
2534: * If it is empty or terminated by an escape sequence,
2535: * abort the `ds' request without defining anything.
1.96 kristaps 2536: */
1.92 schwarze 2537:
1.238 schwarze 2538: name = string = buf->buf + pos;
2539: if (*name == '\0')
1.277 schwarze 2540: return ROFF_IGN;
1.92 schwarze 2541:
1.212 schwarze 2542: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2543: if (name[namesz] == '\\')
1.277 schwarze 2544: return ROFF_IGN;
1.212 schwarze 2545:
2546: /* Read past the initial double-quote, if any. */
1.238 schwarze 2547: if (*string == '"')
1.92 schwarze 2548: string++;
2549:
1.96 kristaps 2550: /* The rest is the value. */
1.212 schwarze 2551: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2552: ROFF_as == tok);
1.311 schwarze 2553: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2554: return ROFF_IGN;
1.92 schwarze 2555: }
2556:
1.204 schwarze 2557: /*
2558: * Parse a single operator, one or two characters long.
2559: * If the operator is recognized, return success and advance the
2560: * parse point, else return failure and let the parse point unchanged.
2561: */
2562: static int
2563: roff_getop(const char *v, int *pos, char *res)
2564: {
2565:
2566: *res = v[*pos];
2567:
2568: switch (*res) {
1.207 schwarze 2569: case '+':
2570: case '-':
2571: case '*':
2572: case '/':
2573: case '%':
2574: case '&':
2575: case ':':
1.204 schwarze 2576: break;
2577: case '<':
2578: switch (v[*pos + 1]) {
1.207 schwarze 2579: case '=':
1.204 schwarze 2580: *res = 'l';
2581: (*pos)++;
2582: break;
1.207 schwarze 2583: case '>':
1.204 schwarze 2584: *res = '!';
2585: (*pos)++;
2586: break;
1.207 schwarze 2587: case '?':
1.204 schwarze 2588: *res = 'i';
2589: (*pos)++;
2590: break;
2591: default:
2592: break;
2593: }
2594: break;
2595: case '>':
2596: switch (v[*pos + 1]) {
1.207 schwarze 2597: case '=':
1.204 schwarze 2598: *res = 'g';
2599: (*pos)++;
2600: break;
1.207 schwarze 2601: case '?':
1.204 schwarze 2602: *res = 'a';
2603: (*pos)++;
2604: break;
2605: default:
2606: break;
2607: }
2608: break;
2609: case '=':
2610: if ('=' == v[*pos + 1])
2611: (*pos)++;
2612: break;
2613: default:
1.277 schwarze 2614: return 0;
1.204 schwarze 2615: }
2616: (*pos)++;
2617:
1.277 schwarze 2618: return *res;
1.204 schwarze 2619: }
2620:
2621: /*
2622: * Evaluate either a parenthesized numeric expression
2623: * or a single signed integer number.
2624: */
2625: static int
1.235 schwarze 2626: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2627: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2628: {
2629:
2630: if ('(' != v[*pos])
1.277 schwarze 2631: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2632:
2633: (*pos)++;
1.261 schwarze 2634: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2635: return 0;
1.204 schwarze 2636:
1.206 schwarze 2637: /*
2638: * Omission of the closing parenthesis
2639: * is an error in validation mode,
2640: * but ignored in evaluation mode.
2641: */
2642:
1.204 schwarze 2643: if (')' == v[*pos])
2644: (*pos)++;
1.206 schwarze 2645: else if (NULL == res)
1.277 schwarze 2646: return 0;
1.204 schwarze 2647:
1.277 schwarze 2648: return 1;
1.204 schwarze 2649: }
2650:
2651: /*
2652: * Evaluate a complete numeric expression.
2653: * Proceed left to right, there is no concept of precedence.
2654: */
2655: static int
1.235 schwarze 2656: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2657: int *pos, int *res, int flags)
1.204 schwarze 2658: {
2659: int mypos, operand2;
2660: char operator;
2661:
2662: if (NULL == pos) {
2663: mypos = 0;
2664: pos = &mypos;
2665: }
2666:
1.261 schwarze 2667: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2668: while (isspace((unsigned char)v[*pos]))
2669: (*pos)++;
2670:
1.261 schwarze 2671: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2672: return 0;
1.204 schwarze 2673:
2674: while (1) {
1.261 schwarze 2675: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2676: while (isspace((unsigned char)v[*pos]))
2677: (*pos)++;
2678:
2679: if ( ! roff_getop(v, pos, &operator))
2680: break;
2681:
1.261 schwarze 2682: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2683: while (isspace((unsigned char)v[*pos]))
2684: (*pos)++;
2685:
1.261 schwarze 2686: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2687: return 0;
1.204 schwarze 2688:
1.261 schwarze 2689: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2690: while (isspace((unsigned char)v[*pos]))
2691: (*pos)++;
1.206 schwarze 2692:
2693: if (NULL == res)
2694: continue;
1.204 schwarze 2695:
2696: switch (operator) {
1.207 schwarze 2697: case '+':
1.204 schwarze 2698: *res += operand2;
2699: break;
1.207 schwarze 2700: case '-':
1.204 schwarze 2701: *res -= operand2;
2702: break;
1.207 schwarze 2703: case '*':
1.204 schwarze 2704: *res *= operand2;
2705: break;
1.207 schwarze 2706: case '/':
1.244 schwarze 2707: if (operand2 == 0) {
1.235 schwarze 2708: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2709: r->parse, ln, *pos, v);
2710: *res = 0;
2711: break;
2712: }
1.204 schwarze 2713: *res /= operand2;
2714: break;
1.207 schwarze 2715: case '%':
1.244 schwarze 2716: if (operand2 == 0) {
2717: mandoc_msg(MANDOCERR_DIVZERO,
2718: r->parse, ln, *pos, v);
2719: *res = 0;
2720: break;
2721: }
1.204 schwarze 2722: *res %= operand2;
2723: break;
1.207 schwarze 2724: case '<':
1.204 schwarze 2725: *res = *res < operand2;
2726: break;
1.207 schwarze 2727: case '>':
1.204 schwarze 2728: *res = *res > operand2;
2729: break;
1.207 schwarze 2730: case 'l':
1.204 schwarze 2731: *res = *res <= operand2;
2732: break;
1.207 schwarze 2733: case 'g':
1.204 schwarze 2734: *res = *res >= operand2;
2735: break;
1.207 schwarze 2736: case '=':
1.204 schwarze 2737: *res = *res == operand2;
2738: break;
1.207 schwarze 2739: case '!':
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 'i':
1.204 schwarze 2749: if (operand2 < *res)
2750: *res = operand2;
2751: break;
1.207 schwarze 2752: case 'a':
1.204 schwarze 2753: if (operand2 > *res)
2754: *res = operand2;
2755: break;
2756: default:
2757: abort();
2758: }
2759: }
1.277 schwarze 2760: return 1;
1.204 schwarze 2761: }
2762:
1.266 schwarze 2763: /* --- register management ------------------------------------------------ */
2764:
1.180 schwarze 2765: void
1.187 schwarze 2766: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2767: {
1.327 schwarze 2768: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2769: }
2770:
2771: static void
2772: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2773: int val, char sign, int step)
1.326 schwarze 2774: {
1.180 schwarze 2775: struct roffreg *reg;
2776:
2777: /* Search for an existing register with the same name. */
2778: reg = r->regtab;
2779:
1.326 schwarze 2780: while (reg != NULL && (reg->key.sz != len ||
2781: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 2782: reg = reg->next;
1.147 kristaps 2783:
1.180 schwarze 2784: if (NULL == reg) {
2785: /* Create a new register. */
2786: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 2787: reg->key.p = mandoc_strndup(name, len);
2788: reg->key.sz = len;
1.187 schwarze 2789: reg->val = 0;
1.327 schwarze 2790: reg->step = 0;
1.180 schwarze 2791: reg->next = r->regtab;
2792: r->regtab = reg;
2793: }
2794:
1.187 schwarze 2795: if ('+' == sign)
2796: reg->val += val;
2797: else if ('-' == sign)
2798: reg->val -= val;
2799: else
2800: reg->val = val;
1.327 schwarze 2801: if (step != INT_MIN)
2802: reg->step = step;
1.147 kristaps 2803: }
2804:
1.192 schwarze 2805: /*
2806: * Handle some predefined read-only number registers.
2807: * For now, return -1 if the requested register is not predefined;
2808: * in case a predefined read-only register having the value -1
2809: * were to turn up, another special value would have to be chosen.
2810: */
2811: static int
1.273 schwarze 2812: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2813: {
2814:
2815: switch (*name) {
1.273 schwarze 2816: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 2817: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 2818: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2819: return 0;
1.207 schwarze 2820: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2821: return 1;
1.207 schwarze 2822: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2823: return 24;
1.207 schwarze 2824: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2825: return 0;
1.207 schwarze 2826: case 'T': /* Some output device is always defined. */
1.277 schwarze 2827: return 1;
1.207 schwarze 2828: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2829: return 40;
1.192 schwarze 2830: default:
1.277 schwarze 2831: return -1;
1.192 schwarze 2832: }
2833: }
2834:
1.181 schwarze 2835: int
1.326 schwarze 2836: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 2837: {
1.327 schwarze 2838: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 2839: }
2840:
2841: static int
1.327 schwarze 2842: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 2843: {
2844: struct roffreg *reg;
1.192 schwarze 2845: int val;
2846:
2847: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2848: val = roff_getregro(r, name + 1);
1.192 schwarze 2849: if (-1 != val)
1.277 schwarze 2850: return val;
1.192 schwarze 2851: }
1.181 schwarze 2852:
1.327 schwarze 2853: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 2854: if (len == reg->key.sz &&
1.327 schwarze 2855: 0 == strncmp(name, reg->key.p, len)) {
2856: switch (sign) {
2857: case '+':
2858: reg->val += reg->step;
2859: break;
2860: case '-':
2861: reg->val -= reg->step;
2862: break;
2863: default:
2864: break;
2865: }
1.277 schwarze 2866: return reg->val;
1.327 schwarze 2867: }
2868: }
1.271 schwarze 2869:
1.327 schwarze 2870: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 2871: return 0;
1.271 schwarze 2872: }
2873:
2874: static int
2875: roff_hasregn(const struct roff *r, const char *name, size_t len)
2876: {
2877: struct roffreg *reg;
2878: int val;
2879:
2880: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2881: val = roff_getregro(r, name + 1);
1.271 schwarze 2882: if (-1 != val)
1.277 schwarze 2883: return 1;
1.271 schwarze 2884: }
2885:
2886: for (reg = r->regtab; reg; reg = reg->next)
2887: if (len == reg->key.sz &&
2888: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2889: return 1;
1.147 kristaps 2890:
1.277 schwarze 2891: return 0;
1.147 kristaps 2892: }
2893:
1.180 schwarze 2894: static void
2895: roff_freereg(struct roffreg *reg)
1.147 kristaps 2896: {
1.180 schwarze 2897: struct roffreg *old_reg;
1.147 kristaps 2898:
1.180 schwarze 2899: while (NULL != reg) {
2900: free(reg->key.p);
2901: old_reg = reg;
2902: reg = reg->next;
2903: free(old_reg);
2904: }
1.147 kristaps 2905: }
1.92 schwarze 2906:
1.340 schwarze 2907: static int
1.89 kristaps 2908: roff_nr(ROFF_ARGS)
1.83 schwarze 2909: {
1.327 schwarze 2910: char *key, *val, *step;
1.212 schwarze 2911: size_t keysz;
1.327 schwarze 2912: int iv, is, len;
1.187 schwarze 2913: char sign;
1.89 kristaps 2914:
1.238 schwarze 2915: key = val = buf->buf + pos;
2916: if (*key == '\0')
1.277 schwarze 2917: return ROFF_IGN;
1.212 schwarze 2918:
2919: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2920: if (key[keysz] == '\\')
1.277 schwarze 2921: return ROFF_IGN;
1.89 kristaps 2922:
1.187 schwarze 2923: sign = *val;
1.238 schwarze 2924: if (sign == '+' || sign == '-')
1.187 schwarze 2925: val++;
2926:
1.327 schwarze 2927: len = 0;
2928: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2929: return ROFF_IGN;
2930:
2931: step = val + len;
2932: while (isspace((unsigned char)*step))
2933: step++;
2934: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2935: is = INT_MIN;
1.109 kristaps 2936:
1.327 schwarze 2937: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 2938: return ROFF_IGN;
1.203 schwarze 2939: }
2940:
1.340 schwarze 2941: static int
1.203 schwarze 2942: roff_rr(ROFF_ARGS)
2943: {
2944: struct roffreg *reg, **prev;
1.212 schwarze 2945: char *name, *cp;
2946: size_t namesz;
1.203 schwarze 2947:
1.238 schwarze 2948: name = cp = buf->buf + pos;
2949: if (*name == '\0')
1.277 schwarze 2950: return ROFF_IGN;
1.212 schwarze 2951: namesz = roff_getname(r, &cp, ln, pos);
2952: name[namesz] = '\0';
1.203 schwarze 2953:
2954: prev = &r->regtab;
2955: while (1) {
2956: reg = *prev;
1.238 schwarze 2957: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2958: break;
2959: prev = ®->next;
2960: }
1.238 schwarze 2961: if (reg != NULL) {
1.203 schwarze 2962: *prev = reg->next;
2963: free(reg->key.p);
2964: free(reg);
2965: }
1.277 schwarze 2966: return ROFF_IGN;
1.122 schwarze 2967: }
2968:
1.266 schwarze 2969: /* --- handler functions for roff requests -------------------------------- */
2970:
1.340 schwarze 2971: static int
1.122 schwarze 2972: roff_rm(ROFF_ARGS)
2973: {
2974: const char *name;
2975: char *cp;
1.212 schwarze 2976: size_t namesz;
1.122 schwarze 2977:
1.238 schwarze 2978: cp = buf->buf + pos;
2979: while (*cp != '\0') {
1.212 schwarze 2980: name = cp;
1.238 schwarze 2981: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2982: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 2983: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 2984: if (name[namesz] == '\\')
1.212 schwarze 2985: break;
1.122 schwarze 2986: }
1.277 schwarze 2987: return ROFF_IGN;
1.178 schwarze 2988: }
2989:
1.340 schwarze 2990: static int
1.178 schwarze 2991: roff_it(ROFF_ARGS)
2992: {
2993: int iv;
2994:
2995: /* Parse the number of lines. */
1.261 schwarze 2996:
2997: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2998: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2999: ln, ppos, buf->buf + 1);
1.277 schwarze 3000: return ROFF_IGN;
1.178 schwarze 3001: }
3002:
1.262 schwarze 3003: while (isspace((unsigned char)buf->buf[pos]))
3004: pos++;
3005:
3006: /*
3007: * Arm the input line trap.
3008: * Special-casing "an-trap" is an ugly workaround to cope
3009: * with DocBook stupidly fiddling with man(7) internals.
3010: */
1.261 schwarze 3011:
1.178 schwarze 3012: roffit_lines = iv;
1.262 schwarze 3013: roffit_macro = mandoc_strdup(iv != 1 ||
3014: strcmp(buf->buf + pos, "an-trap") ?
3015: buf->buf + pos : "br");
1.277 schwarze 3016: return ROFF_IGN;
1.175 schwarze 3017: }
3018:
1.340 schwarze 3019: static int
1.175 schwarze 3020: roff_Dd(ROFF_ARGS)
3021: {
1.315 schwarze 3022: int mask;
3023: enum roff_tok t, te;
1.227 schwarze 3024:
1.315 schwarze 3025: switch (tok) {
3026: case ROFF_Dd:
3027: tok = MDOC_Dd;
3028: te = MDOC_MAX;
3029: if (r->format == 0)
3030: r->format = MPARSE_MDOC;
3031: mask = MPARSE_MDOC | MPARSE_QUICK;
3032: break;
3033: case ROFF_TH:
3034: tok = MAN_TH;
3035: te = MAN_MAX;
3036: if (r->format == 0)
3037: r->format = MPARSE_MAN;
3038: mask = MPARSE_QUICK;
3039: break;
3040: default:
3041: abort();
3042: }
3043: if ((r->options & mask) == 0)
3044: for (t = tok; t < te; t++)
3045: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3046: return ROFF_CONT;
1.109 kristaps 3047: }
3048:
1.340 schwarze 3049: static int
1.109 kristaps 3050: roff_TE(ROFF_ARGS)
3051: {
1.321 schwarze 3052: if (r->tbl == NULL) {
1.221 schwarze 3053: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3054: ln, ppos, "TE");
1.321 schwarze 3055: return ROFF_IGN;
3056: }
1.346 ! schwarze 3057: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3058: r->tbl = NULL;
1.258 schwarze 3059: free(buf->buf);
3060: buf->buf = mandoc_strdup(".sp");
3061: buf->sz = 4;
1.329 schwarze 3062: *offs = 0;
1.277 schwarze 3063: return ROFF_REPARSE;
1.258 schwarze 3064: }
1.321 schwarze 3065: r->tbl = NULL;
1.277 schwarze 3066: return ROFF_IGN;
1.112 kristaps 3067: }
3068:
1.340 schwarze 3069: static int
1.112 kristaps 3070: roff_T_(ROFF_ARGS)
3071: {
3072:
3073: if (NULL == r->tbl)
1.221 schwarze 3074: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3075: ln, ppos, "T&");
1.112 kristaps 3076: else
1.296 schwarze 3077: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3078:
1.277 schwarze 3079: return ROFF_IGN;
1.109 kristaps 3080: }
3081:
1.230 schwarze 3082: /*
3083: * Handle in-line equation delimiters.
3084: */
1.340 schwarze 3085: static int
1.238 schwarze 3086: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3087: {
1.233 schwarze 3088: char *cp1, *cp2;
3089: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3090:
1.230 schwarze 3091: /*
3092: * Outside equations, look for an opening delimiter.
3093: * If we are inside an equation, we already know it is
3094: * in-line, or this function wouldn't have been called;
3095: * so look for a closing delimiter.
3096: */
3097:
1.238 schwarze 3098: cp1 = buf->buf + pos;
1.230 schwarze 3099: cp2 = strchr(cp1, r->eqn == NULL ?
3100: r->last_eqn->odelim : r->last_eqn->cdelim);
3101: if (cp2 == NULL)
1.277 schwarze 3102: return ROFF_CONT;
1.230 schwarze 3103:
1.233 schwarze 3104: *cp2++ = '\0';
3105: bef_pr = bef_nl = aft_nl = aft_pr = "";
3106:
3107: /* Handle preceding text, protecting whitespace. */
3108:
1.238 schwarze 3109: if (*buf->buf != '\0') {
1.233 schwarze 3110: if (r->eqn == NULL)
3111: bef_pr = "\\&";
3112: bef_nl = "\n";
3113: }
3114:
3115: /*
3116: * Prepare replacing the delimiter with an equation macro
3117: * and drop leading white space from the equation.
3118: */
1.230 schwarze 3119:
1.233 schwarze 3120: if (r->eqn == NULL) {
3121: while (*cp2 == ' ')
3122: cp2++;
3123: mac = ".EQ";
3124: } else
3125: mac = ".EN";
3126:
3127: /* Handle following text, protecting whitespace. */
3128:
3129: if (*cp2 != '\0') {
3130: aft_nl = "\n";
3131: if (r->eqn != NULL)
3132: aft_pr = "\\&";
3133: }
3134:
3135: /* Do the actual replacement. */
3136:
1.238 schwarze 3137: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3138: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3139: free(buf->buf);
3140: buf->buf = cp1;
1.230 schwarze 3141:
3142: /* Toggle the in-line state of the eqn subsystem. */
3143:
3144: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3145: return ROFF_REPARSE;
1.151 kristaps 3146: }
3147:
1.340 schwarze 3148: static int
1.235 schwarze 3149: roff_EQ(ROFF_ARGS)
1.125 kristaps 3150: {
1.319 schwarze 3151: struct roff_node *n;
3152:
1.322 schwarze 3153: if (r->man->macroset == MACROSET_MAN)
3154: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3155: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3156: if (ln > r->man->last->line)
3157: n->flags |= NODE_LINE;
3158: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
3159: n->eqn->expectargs = UINT_MAX;
3160: roff_node_append(r->man, n);
3161: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3162:
1.238 schwarze 3163: assert(r->eqn == NULL);
1.319 schwarze 3164: if (r->last_eqn == NULL)
3165: r->last_eqn = eqn_alloc(r->parse);
3166: else
3167: eqn_reset(r->last_eqn);
3168: r->eqn = r->last_eqn;
3169: r->eqn->node = n;
1.151 kristaps 3170:
1.238 schwarze 3171: if (buf->buf[pos] != '\0')
1.235 schwarze 3172: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 3173: ".EQ %s", buf->buf + pos);
1.151 kristaps 3174:
1.277 schwarze 3175: return ROFF_IGN;
1.125 kristaps 3176: }
3177:
1.340 schwarze 3178: static int
1.125 kristaps 3179: roff_EN(ROFF_ARGS)
3180: {
1.319 schwarze 3181: if (r->eqn != NULL) {
3182: eqn_parse(r->eqn);
3183: r->eqn = NULL;
3184: } else
3185: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
3186: if (buf->buf[pos] != '\0')
3187: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3188: "EN %s", buf->buf + pos);
1.277 schwarze 3189: return ROFF_IGN;
1.125 kristaps 3190: }
3191:
1.340 schwarze 3192: static int
1.109 kristaps 3193: roff_TS(ROFF_ARGS)
3194: {
1.321 schwarze 3195: if (r->tbl != NULL) {
1.221 schwarze 3196: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
3197: ln, ppos, "TS breaks TS");
1.346 ! schwarze 3198: tbl_end(r->tbl, 0);
1.115 kristaps 3199: }
1.346 ! schwarze 3200: r->tbl = tbl_alloc(ppos, ln, r->parse, r->last_tbl);
! 3201: if (r->last_tbl == NULL)
1.321 schwarze 3202: r->first_tbl = r->tbl;
3203: r->last_tbl = r->tbl;
1.297 schwarze 3204: return ROFF_IGN;
3205: }
3206:
1.340 schwarze 3207: static int
1.297 schwarze 3208: roff_onearg(ROFF_ARGS)
3209: {
3210: struct roff_node *n;
3211: char *cp;
1.305 schwarze 3212: int npos;
1.297 schwarze 3213:
1.302 schwarze 3214: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3215: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3216: tok == ROFF_ti))
1.302 schwarze 3217: man_breakscope(r->man, tok);
3218:
1.309 schwarze 3219: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3220: r->man->last = roffce_node;
3221: r->man->next = ROFF_NEXT_SIBLING;
3222: }
3223:
1.297 schwarze 3224: roff_elem_alloc(r->man, ln, ppos, tok);
3225: n = r->man->last;
3226:
3227: cp = buf->buf + pos;
3228: if (*cp != '\0') {
3229: while (*cp != '\0' && *cp != ' ')
3230: cp++;
3231: while (*cp == ' ')
3232: *cp++ = '\0';
3233: if (*cp != '\0')
3234: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
3235: r->parse, ln, cp - buf->buf,
3236: "%s ... %s", roff_name[tok], cp);
3237: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3238: }
3239:
1.309 schwarze 3240: if (tok == ROFF_ce || tok == ROFF_rj) {
3241: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3242: roff_word_alloc(r->man, ln, pos, "1");
3243: r->man->last->flags |= NODE_NOSRC;
3244: }
3245: npos = 0;
3246: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3247: &roffce_lines, 0) == 0) {
3248: mandoc_vmsg(MANDOCERR_CE_NONUM,
3249: r->parse, ln, pos, "ce %s", buf->buf + pos);
3250: roffce_lines = 1;
3251: }
3252: if (roffce_lines < 1) {
3253: r->man->last = r->man->last->parent;
3254: roffce_node = NULL;
3255: roffce_lines = 0;
3256: } else
3257: roffce_node = r->man->last->parent;
3258: } else {
3259: n->flags |= NODE_VALID | NODE_ENDED;
3260: r->man->last = n;
3261: }
3262: n->flags |= NODE_LINE;
1.300 schwarze 3263: r->man->next = ROFF_NEXT_SIBLING;
3264: return ROFF_IGN;
3265: }
3266:
1.340 schwarze 3267: static int
1.300 schwarze 3268: roff_manyarg(ROFF_ARGS)
3269: {
3270: struct roff_node *n;
3271: char *sp, *ep;
3272:
3273: roff_elem_alloc(r->man, ln, ppos, tok);
3274: n = r->man->last;
3275:
3276: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3277: while (*ep != '\0' && *ep != ' ')
3278: ep++;
3279: while (*ep == ' ')
3280: *ep++ = '\0';
3281: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3282: }
3283:
3284: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3285: r->man->last = n;
3286: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3287: return ROFF_IGN;
1.251 schwarze 3288: }
3289:
1.340 schwarze 3290: static int
1.311 schwarze 3291: roff_als(ROFF_ARGS)
3292: {
3293: char *oldn, *newn, *end, *value;
3294: size_t oldsz, newsz, valsz;
3295:
3296: newn = oldn = buf->buf + pos;
3297: if (*newn == '\0')
3298: return ROFF_IGN;
3299:
3300: newsz = roff_getname(r, &oldn, ln, pos);
3301: if (newn[newsz] == '\\' || *oldn == '\0')
3302: return ROFF_IGN;
3303:
3304: end = oldn;
3305: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3306: if (oldsz == 0)
3307: return ROFF_IGN;
3308:
1.338 schwarze 3309: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3310: (int)oldsz, oldn);
1.311 schwarze 3311: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3312: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3313: free(value);
3314: return ROFF_IGN;
3315: }
3316:
1.340 schwarze 3317: static int
1.296 schwarze 3318: roff_br(ROFF_ARGS)
1.251 schwarze 3319: {
1.302 schwarze 3320: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3321: man_breakscope(r->man, ROFF_br);
1.296 schwarze 3322: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3323: if (buf->buf[pos] != '\0')
3324: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3325: "%s %s", roff_name[tok], buf->buf + pos);
3326: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3327: r->man->next = ROFF_NEXT_SIBLING;
3328: return ROFF_IGN;
1.92 schwarze 3329: }
3330:
1.340 schwarze 3331: static int
1.174 kristaps 3332: roff_cc(ROFF_ARGS)
3333: {
3334: const char *p;
3335:
1.238 schwarze 3336: p = buf->buf + pos;
1.174 kristaps 3337:
1.238 schwarze 3338: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3339: r->control = '\0';
1.174 kristaps 3340:
1.238 schwarze 3341: if (*p != '\0')
1.260 schwarze 3342: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3343: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3344:
1.341 schwarze 3345: return ROFF_IGN;
3346: }
3347:
3348: static int
3349: roff_char(ROFF_ARGS)
3350: {
3351: const char *p, *kp, *vp;
3352: size_t ksz, vsz;
3353: int font;
3354:
3355: /* Parse the character to be replaced. */
3356:
3357: kp = buf->buf + pos;
3358: p = kp + 1;
3359: if (*kp == '\0' || (*kp == '\\' &&
3360: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3361: (*p != ' ' && *p != '\0')) {
3362: mandoc_vmsg(MANDOCERR_CHAR_ARG, r->parse,
3363: ln, pos, "char %s", kp);
3364: return ROFF_IGN;
3365: }
3366: ksz = p - kp;
3367: while (*p == ' ')
3368: p++;
3369:
3370: /*
3371: * If the replacement string contains a font escape sequence,
3372: * we have to restore the font at the end.
3373: */
3374:
3375: vp = p;
3376: vsz = strlen(p);
3377: font = 0;
3378: while (*p != '\0') {
3379: if (*p++ != '\\')
3380: continue;
3381: switch (mandoc_escape(&p, NULL, NULL)) {
3382: case ESCAPE_FONT:
3383: case ESCAPE_FONTROMAN:
3384: case ESCAPE_FONTITALIC:
3385: case ESCAPE_FONTBOLD:
3386: case ESCAPE_FONTBI:
1.342 schwarze 3387: case ESCAPE_FONTCW:
1.341 schwarze 3388: case ESCAPE_FONTPREV:
3389: font++;
3390: break;
3391: default:
3392: break;
3393: }
3394: }
3395: if (font > 1)
3396: mandoc_msg(MANDOCERR_CHAR_FONT, r->parse,
3397: ln, vp - buf->buf, vp);
3398:
3399: /*
3400: * Approximate the effect of .char using the .tr tables.
3401: * XXX In groff, .char and .tr interact differently.
3402: */
3403:
3404: if (ksz == 1) {
3405: if (r->xtab == NULL)
3406: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3407: assert((unsigned int)*kp < 128);
3408: free(r->xtab[(int)*kp].p);
3409: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3410: "%s%s", vp, font ? "\fP" : "");
3411: } else {
3412: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3413: if (font)
3414: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3415: }
1.277 schwarze 3416: return ROFF_IGN;
1.174 kristaps 3417: }
3418:
1.340 schwarze 3419: static int
1.303 schwarze 3420: roff_ec(ROFF_ARGS)
3421: {
3422: const char *p;
3423:
3424: p = buf->buf + pos;
3425: if (*p == '\0')
3426: r->escape = '\\';
3427: else {
3428: r->escape = *p;
3429: if (*++p != '\0')
3430: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3431: ln, p - buf->buf, "ec ... %s", p);
3432: }
3433: return ROFF_IGN;
3434: }
3435:
1.340 schwarze 3436: static int
1.303 schwarze 3437: roff_eo(ROFF_ARGS)
3438: {
3439: r->escape = '\0';
3440: if (buf->buf[pos] != '\0')
3441: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3442: ln, pos, "eo %s", buf->buf + pos);
3443: return ROFF_IGN;
1.330 schwarze 3444: }
3445:
1.340 schwarze 3446: static int
1.330 schwarze 3447: roff_nop(ROFF_ARGS)
3448: {
3449: while (buf->buf[pos] == ' ')
3450: pos++;
3451: *offs = pos;
3452: return ROFF_RERUN;
1.303 schwarze 3453: }
3454:
1.340 schwarze 3455: static int
1.164 kristaps 3456: roff_tr(ROFF_ARGS)
3457: {
3458: const char *p, *first, *second;
3459: size_t fsz, ssz;
3460: enum mandoc_esc esc;
3461:
1.238 schwarze 3462: p = buf->buf + pos;
1.164 kristaps 3463:
1.238 schwarze 3464: if (*p == '\0') {
1.260 schwarze 3465: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 3466: return ROFF_IGN;
1.164 kristaps 3467: }
3468:
1.238 schwarze 3469: while (*p != '\0') {
1.164 kristaps 3470: fsz = ssz = 1;
3471:
3472: first = p++;
1.238 schwarze 3473: if (*first == '\\') {
1.164 kristaps 3474: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3475: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3476: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3477: ln, (int)(p - buf->buf), first);
1.277 schwarze 3478: return ROFF_IGN;
1.164 kristaps 3479: }
3480: fsz = (size_t)(p - first);
3481: }
3482:
3483: second = p++;
1.238 schwarze 3484: if (*second == '\\') {
1.164 kristaps 3485: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3486: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3487: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3488: ln, (int)(p - buf->buf), second);
1.277 schwarze 3489: return ROFF_IGN;
1.164 kristaps 3490: }
3491: ssz = (size_t)(p - second);
1.238 schwarze 3492: } else if (*second == '\0') {
1.260 schwarze 3493: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3494: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3495: second = " ";
1.165 kristaps 3496: p--;
1.164 kristaps 3497: }
3498:
1.167 kristaps 3499: if (fsz > 1) {
1.207 schwarze 3500: roff_setstrn(&r->xmbtab, first, fsz,
3501: second, ssz, 0);
1.167 kristaps 3502: continue;
3503: }
3504:
1.238 schwarze 3505: if (r->xtab == NULL)
1.207 schwarze 3506: r->xtab = mandoc_calloc(128,
3507: sizeof(struct roffstr));
1.167 kristaps 3508:
3509: free(r->xtab[(int)*first].p);
3510: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3511: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3512: }
3513:
1.277 schwarze 3514: return ROFF_IGN;
1.164 kristaps 3515: }
3516:
1.339 schwarze 3517: /*
3518: * Implementation of the .return request.
3519: * There is no need to call roff_userret() from here.
3520: * The read module will call that after rewinding the reader stack
3521: * to the place from where the current macro was called.
3522: */
1.340 schwarze 3523: static int
1.339 schwarze 3524: roff_return(ROFF_ARGS)
3525: {
3526: if (r->mstackpos >= 0)
1.340 schwarze 3527: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3528:
3529: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "return");
3530: return ROFF_IGN;
3531: }
3532:
1.340 schwarze 3533: static int
1.306 schwarze 3534: roff_rn(ROFF_ARGS)
3535: {
3536: const char *value;
3537: char *oldn, *newn, *end;
3538: size_t oldsz, newsz;
1.315 schwarze 3539: int deftype;
1.306 schwarze 3540:
3541: oldn = newn = buf->buf + pos;
3542: if (*oldn == '\0')
3543: return ROFF_IGN;
3544:
3545: oldsz = roff_getname(r, &newn, ln, pos);
3546: if (oldn[oldsz] == '\\' || *newn == '\0')
3547: return ROFF_IGN;
3548:
3549: end = newn;
3550: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3551: if (newsz == 0)
3552: return ROFF_IGN;
3553:
1.315 schwarze 3554: deftype = ROFFDEF_ANY;
3555: value = roff_getstrn(r, oldn, oldsz, &deftype);
3556: switch (deftype) {
3557: case ROFFDEF_USER:
1.306 schwarze 3558: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3559: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3560: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3561: break;
3562: case ROFFDEF_PRE:
3563: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3564: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3565: break;
3566: case ROFFDEF_REN:
1.306 schwarze 3567: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3568: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3569: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3570: break;
3571: case ROFFDEF_STD:
1.306 schwarze 3572: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3573: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3574: break;
3575: default:
3576: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3577: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3578: break;
3579: }
1.306 schwarze 3580: return ROFF_IGN;
3581: }
3582:
1.340 schwarze 3583: static int
1.339 schwarze 3584: roff_shift(ROFF_ARGS)
3585: {
3586: struct mctx *ctx;
3587: int levels, i;
3588:
3589: levels = 1;
3590: if (buf->buf[pos] != '\0' &&
3591: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
3592: mandoc_vmsg(MANDOCERR_CE_NONUM, r->parse,
3593: ln, pos, "shift %s", buf->buf + pos);
3594: levels = 1;
3595: }
3596: if (r->mstackpos < 0) {
3597: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "shift");
3598: return ROFF_IGN;
3599: }
3600: ctx = r->mstack + r->mstackpos;
3601: if (levels > ctx->argc) {
3602: mandoc_vmsg(MANDOCERR_SHIFT, r->parse,
3603: ln, pos, "%d, but max is %d", levels, ctx->argc);
3604: levels = ctx->argc;
3605: }
3606: if (levels == 0)
3607: return ROFF_IGN;
3608: for (i = 0; i < levels; i++)
3609: free(ctx->argv[i]);
3610: ctx->argc -= levels;
3611: for (i = 0; i < ctx->argc; i++)
3612: ctx->argv[i] = ctx->argv[i + levels];
3613: return ROFF_IGN;
3614: }
3615:
1.340 schwarze 3616: static int
1.105 kristaps 3617: roff_so(ROFF_ARGS)
3618: {
1.249 schwarze 3619: char *name, *cp;
1.105 kristaps 3620:
1.238 schwarze 3621: name = buf->buf + pos;
1.224 schwarze 3622: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3623:
3624: /*
3625: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3626: * opening anything that's not in our cwd or anything beneath
3627: * it. Thus, explicitly disallow traversing up the file-system
3628: * or using absolute paths.
3629: */
3630:
1.238 schwarze 3631: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3632: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3633: ".so %s", name);
1.249 schwarze 3634: buf->sz = mandoc_asprintf(&cp,
3635: ".sp\nSee the file %s.\n.sp", name) + 1;
3636: free(buf->buf);
3637: buf->buf = cp;
3638: *offs = 0;
1.277 schwarze 3639: return ROFF_REPARSE;
1.105 kristaps 3640: }
3641:
3642: *offs = pos;
1.277 schwarze 3643: return ROFF_SO;
1.105 kristaps 3644: }
1.92 schwarze 3645:
1.266 schwarze 3646: /* --- user defined strings and macros ------------------------------------ */
3647:
1.340 schwarze 3648: static int
1.106 kristaps 3649: roff_userdef(ROFF_ARGS)
1.99 kristaps 3650: {
1.339 schwarze 3651: struct mctx *ctx;
3652: char *arg, *ap, *dst, *src;
3653: size_t sz;
3654:
3655: /* Initialize a new macro stack context. */
3656:
3657: if (++r->mstackpos == r->mstacksz) {
3658: r->mstack = mandoc_recallocarray(r->mstack,
3659: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3660: r->mstacksz += 8;
3661: }
3662: ctx = r->mstack + r->mstackpos;
3663: ctx->argsz = 0;
3664: ctx->argc = 0;
3665: ctx->argv = NULL;
3666:
3667: /*
3668: * Collect pointers to macro argument strings,
3669: * NUL-terminating them and escaping quotes.
3670: */
3671:
3672: src = buf->buf + pos;
3673: while (*src != '\0') {
3674: if (ctx->argc == ctx->argsz) {
3675: ctx->argsz += 8;
3676: ctx->argv = mandoc_reallocarray(ctx->argv,
3677: ctx->argsz, sizeof(*ctx->argv));
3678: }
3679: arg = mandoc_getarg(r->parse, &src, ln, &pos);
3680: sz = 1; /* For the terminating NUL. */
3681: for (ap = arg; *ap != '\0'; ap++)
3682: sz += *ap == '"' ? 4 : 1;
3683: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3684: for (ap = arg; *ap != '\0'; ap++) {
3685: if (*ap == '"') {
3686: memcpy(dst, "\\(dq", 4);
3687: dst += 4;
3688: } else
3689: *dst++ = *ap;
1.106 kristaps 3690: }
1.339 schwarze 3691: *dst = '\0';
1.337 schwarze 3692: }
3693:
1.339 schwarze 3694: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3695:
1.238 schwarze 3696: free(buf->buf);
1.339 schwarze 3697: buf->buf = mandoc_strdup(r->current_string);
3698: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3699: *offs = 0;
1.106 kristaps 3700:
1.277 schwarze 3701: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3702: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3703: }
1.121 schwarze 3704:
1.306 schwarze 3705: /*
3706: * Calling a high-level macro that was renamed with .rn.
3707: * r->current_string has already been set up by roff_parse().
3708: */
1.340 schwarze 3709: static int
1.306 schwarze 3710: roff_renamed(ROFF_ARGS)
3711: {
3712: char *nbuf;
3713:
1.315 schwarze 3714: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3715: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3716: free(buf->buf);
3717: buf->buf = nbuf;
1.329 schwarze 3718: *offs = 0;
1.306 schwarze 3719: return ROFF_CONT;
3720: }
3721:
1.212 schwarze 3722: static size_t
1.121 schwarze 3723: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3724: {
3725: char *name, *cp;
1.212 schwarze 3726: size_t namesz;
1.121 schwarze 3727:
3728: name = *cpp;
3729: if ('\0' == *name)
1.277 schwarze 3730: return 0;
1.121 schwarze 3731:
1.212 schwarze 3732: /* Read until end of name and terminate it with NUL. */
3733: for (cp = name; 1; cp++) {
3734: if ('\0' == *cp || ' ' == *cp) {
3735: namesz = cp - name;
3736: break;
3737: }
1.121 schwarze 3738: if ('\\' != *cp)
3739: continue;
1.215 schwarze 3740: namesz = cp - name;
3741: if ('{' == cp[1] || '}' == cp[1])
3742: break;
1.121 schwarze 3743: cp++;
3744: if ('\\' == *cp)
3745: continue;
1.224 schwarze 3746: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3747: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3748: mandoc_escape((const char **)&cp, NULL, NULL);
3749: break;
1.121 schwarze 3750: }
3751:
3752: /* Read past spaces. */
3753: while (' ' == *cp)
3754: cp++;
3755:
3756: *cpp = cp;
1.277 schwarze 3757: return namesz;
1.121 schwarze 3758: }
3759:
1.106 kristaps 3760: /*
3761: * Store *string into the user-defined string called *name.
3762: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3763: * append == 0: replace mode
3764: * append == 1: single-line append mode
3765: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3766: */
1.94 kristaps 3767: static void
1.106 kristaps 3768: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3769: int append)
1.92 schwarze 3770: {
1.315 schwarze 3771: size_t namesz;
1.164 kristaps 3772:
1.315 schwarze 3773: namesz = strlen(name);
3774: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 3775: string ? strlen(string) : 0, append);
1.315 schwarze 3776: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 3777: }
3778:
3779: static void
1.166 kristaps 3780: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3781: const char *string, size_t stringsz, int append)
1.164 kristaps 3782: {
1.166 kristaps 3783: struct roffkv *n;
1.164 kristaps 3784: char *c;
3785: int i;
3786: size_t oldch, newch;
1.92 schwarze 3787:
1.106 kristaps 3788: /* Search for an existing string with the same name. */
1.164 kristaps 3789: n = *r;
3790:
1.211 schwarze 3791: while (n && (namesz != n->key.sz ||
3792: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3793: n = n->next;
1.94 kristaps 3794:
3795: if (NULL == n) {
1.106 kristaps 3796: /* Create a new string table entry. */
1.166 kristaps 3797: n = mandoc_malloc(sizeof(struct roffkv));
3798: n->key.p = mandoc_strndup(name, namesz);
3799: n->key.sz = namesz;
3800: n->val.p = NULL;
3801: n->val.sz = 0;
1.164 kristaps 3802: n->next = *r;
3803: *r = n;
1.193 schwarze 3804: } else if (0 == append) {
1.166 kristaps 3805: free(n->val.p);
3806: n->val.p = NULL;
3807: n->val.sz = 0;
1.106 kristaps 3808: }
3809:
3810: if (NULL == string)
3811: return;
3812:
3813: /*
3814: * One additional byte for the '\n' in multiline mode,
3815: * and one for the terminating '\0'.
3816: */
1.193 schwarze 3817: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3818:
1.166 kristaps 3819: if (NULL == n->val.p) {
3820: n->val.p = mandoc_malloc(newch);
3821: *n->val.p = '\0';
1.106 kristaps 3822: oldch = 0;
3823: } else {
1.166 kristaps 3824: oldch = n->val.sz;
3825: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3826: }
3827:
3828: /* Skip existing content in the destination buffer. */
1.166 kristaps 3829: c = n->val.p + (int)oldch;
1.106 kristaps 3830:
3831: /* Append new content to the destination buffer. */
1.164 kristaps 3832: i = 0;
3833: while (i < (int)stringsz) {
1.106 kristaps 3834: /*
3835: * Rudimentary roff copy mode:
3836: * Handle escaped backslashes.
3837: */
1.164 kristaps 3838: if ('\\' == string[i] && '\\' == string[i + 1])
3839: i++;
3840: *c++ = string[i++];
1.106 kristaps 3841: }
1.94 kristaps 3842:
1.106 kristaps 3843: /* Append terminating bytes. */
1.193 schwarze 3844: if (1 < append)
1.106 kristaps 3845: *c++ = '\n';
1.163 kristaps 3846:
1.106 kristaps 3847: *c = '\0';
1.166 kristaps 3848: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3849: }
3850:
1.94 kristaps 3851: static const char *
1.325 schwarze 3852: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 3853: int *deftype)
1.92 schwarze 3854: {
1.315 schwarze 3855: const struct roffkv *n;
1.325 schwarze 3856: int found, i;
1.315 schwarze 3857: enum roff_tok tok;
3858:
1.325 schwarze 3859: found = 0;
3860: for (n = r->strtab; n != NULL; n = n->next) {
3861: if (strncmp(name, n->key.p, len) != 0 ||
3862: n->key.p[len] != '\0' || n->val.p == NULL)
3863: continue;
3864: if (*deftype & ROFFDEF_USER) {
3865: *deftype = ROFFDEF_USER;
3866: return n->val.p;
3867: } else {
3868: found = 1;
3869: break;
3870: }
3871: }
3872: for (n = r->rentab; n != NULL; n = n->next) {
3873: if (strncmp(name, n->key.p, len) != 0 ||
3874: n->key.p[len] != '\0' || n->val.p == NULL)
3875: continue;
3876: if (*deftype & ROFFDEF_REN) {
3877: *deftype = ROFFDEF_REN;
3878: return n->val.p;
3879: } else {
3880: found = 1;
3881: break;
1.315 schwarze 3882: }
3883: }
1.325 schwarze 3884: for (i = 0; i < PREDEFS_MAX; i++) {
3885: if (strncmp(name, predefs[i].name, len) != 0 ||
3886: predefs[i].name[len] != '\0')
3887: continue;
3888: if (*deftype & ROFFDEF_PRE) {
3889: *deftype = ROFFDEF_PRE;
3890: return predefs[i].str;
3891: } else {
3892: found = 1;
3893: break;
1.315 schwarze 3894: }
3895: }
1.325 schwarze 3896: if (r->man->macroset != MACROSET_MAN) {
3897: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3898: if (strncmp(name, roff_name[tok], len) != 0 ||
3899: roff_name[tok][len] != '\0')
3900: continue;
3901: if (*deftype & ROFFDEF_STD) {
3902: *deftype = ROFFDEF_STD;
3903: return NULL;
3904: } else {
3905: found = 1;
3906: break;
1.315 schwarze 3907: }
3908: }
3909: }
1.325 schwarze 3910: if (r->man->macroset != MACROSET_MDOC) {
3911: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3912: if (strncmp(name, roff_name[tok], len) != 0 ||
3913: roff_name[tok][len] != '\0')
3914: continue;
3915: if (*deftype & ROFFDEF_STD) {
3916: *deftype = ROFFDEF_STD;
3917: return NULL;
3918: } else {
3919: found = 1;
3920: break;
1.315 schwarze 3921: }
3922: }
1.325 schwarze 3923: }
3924:
3925: if (found == 0 && *deftype != ROFFDEF_ANY) {
3926: if (*deftype & ROFFDEF_REN) {
3927: /*
3928: * This might still be a request,
3929: * so do not treat it as undefined yet.
3930: */
3931: *deftype = ROFFDEF_UNDEF;
3932: return NULL;
1.315 schwarze 3933: }
1.325 schwarze 3934:
3935: /* Using an undefined string defines it to be empty. */
3936:
3937: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3938: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 3939: }
1.325 schwarze 3940:
1.315 schwarze 3941: *deftype = 0;
1.277 schwarze 3942: return NULL;
1.92 schwarze 3943: }
3944:
1.94 kristaps 3945: static void
1.167 kristaps 3946: roff_freestr(struct roffkv *r)
1.92 schwarze 3947: {
1.166 kristaps 3948: struct roffkv *n, *nn;
1.92 schwarze 3949:
1.167 kristaps 3950: for (n = r; n; n = nn) {
1.166 kristaps 3951: free(n->key.p);
3952: free(n->val.p);
1.92 schwarze 3953: nn = n->next;
3954: free(n);
3955: }
1.114 kristaps 3956: }
1.266 schwarze 3957:
3958: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 3959:
3960: /*
3961: * Duplicate an input string, making the appropriate character
3962: * conversations (as stipulated by `tr') along the way.
3963: * Returns a heap-allocated string with all the replacements made.
3964: */
3965: char *
3966: roff_strdup(const struct roff *r, const char *p)
3967: {
1.166 kristaps 3968: const struct roffkv *cp;
1.164 kristaps 3969: char *res;
3970: const char *pp;
3971: size_t ssz, sz;
3972: enum mandoc_esc esc;
3973:
1.167 kristaps 3974: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3975: return mandoc_strdup(p);
1.164 kristaps 3976: else if ('\0' == *p)
1.277 schwarze 3977: return mandoc_strdup("");
1.164 kristaps 3978:
3979: /*
3980: * Step through each character looking for term matches
3981: * (remember that a `tr' can be invoked with an escape, which is
3982: * a glyph but the escape is multi-character).
3983: * We only do this if the character hash has been initialised
3984: * and the string is >0 length.
3985: */
3986:
3987: res = NULL;
3988: ssz = 0;
3989:
3990: while ('\0' != *p) {
1.289 schwarze 3991: assert((unsigned int)*p < 128);
3992: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3993: sz = r->xtab[(int)*p].sz;
3994: res = mandoc_realloc(res, ssz + sz + 1);
3995: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3996: ssz += sz;
3997: p++;
3998: continue;
3999: } else if ('\\' != *p) {
4000: res = mandoc_realloc(res, ssz + 2);
4001: res[ssz++] = *p++;
4002: continue;
4003: }
4004:
1.164 kristaps 4005: /* Search for term matches. */
1.167 kristaps 4006: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4007: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4008: break;
4009:
4010: if (NULL != cp) {
4011: /*
4012: * A match has been found.
4013: * Append the match to the array and move
4014: * forward by its keysize.
4015: */
1.207 schwarze 4016: res = mandoc_realloc(res,
4017: ssz + cp->val.sz + 1);
1.166 kristaps 4018: memcpy(res + ssz, cp->val.p, cp->val.sz);
4019: ssz += cp->val.sz;
4020: p += (int)cp->key.sz;
1.164 kristaps 4021: continue;
4022: }
4023:
1.167 kristaps 4024: /*
4025: * Handle escapes carefully: we need to copy
4026: * over just the escape itself, or else we might
4027: * do replacements within the escape itself.
4028: * Make sure to pass along the bogus string.
4029: */
4030: pp = p++;
4031: esc = mandoc_escape(&p, NULL, NULL);
4032: if (ESCAPE_ERROR == esc) {
4033: sz = strlen(pp);
1.164 kristaps 4034: res = mandoc_realloc(res, ssz + sz + 1);
4035: memcpy(res + ssz, pp, sz);
1.167 kristaps 4036: break;
1.164 kristaps 4037: }
1.207 schwarze 4038: /*
4039: * We bail out on bad escapes.
1.167 kristaps 4040: * No need to warn: we already did so when
4041: * roff_res() was called.
4042: */
4043: sz = (int)(p - pp);
4044: res = mandoc_realloc(res, ssz + sz + 1);
4045: memcpy(res + ssz, pp, sz);
4046: ssz += sz;
1.164 kristaps 4047: }
4048:
4049: res[(int)ssz] = '\0';
1.277 schwarze 4050: return res;
1.227 schwarze 4051: }
4052:
4053: int
4054: roff_getformat(const struct roff *r)
4055: {
4056:
1.277 schwarze 4057: return r->format;
1.174 kristaps 4058: }
4059:
4060: /*
1.207 schwarze 4061: * Find out whether a line is a macro line or not.
1.174 kristaps 4062: * If it is, adjust the current position and return one; if it isn't,
4063: * return zero and don't change the current position.
4064: * If the control character has been set with `.cc', then let that grain
4065: * precedence.
4066: * This is slighly contrary to groff, where using the non-breaking
4067: * control character when `cc' has been invoked will cause the
4068: * non-breaking macro contents to be printed verbatim.
4069: */
4070: int
4071: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4072: {
4073: int pos;
4074:
4075: pos = *ppos;
4076:
1.303 schwarze 4077: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4078: pos++;
1.303 schwarze 4079: else if (r->control != '\0')
1.277 schwarze 4080: return 0;
1.174 kristaps 4081: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4082: pos += 2;
4083: else if ('.' == cp[pos] || '\'' == cp[pos])
4084: pos++;
4085: else
1.277 schwarze 4086: return 0;
1.174 kristaps 4087:
4088: while (' ' == cp[pos] || '\t' == cp[pos])
4089: pos++;
4090:
4091: *ppos = pos;
1.277 schwarze 4092: return 1;
1.74 kristaps 4093: }
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