Annotation of mandoc/roff.c, Revision 1.343
1.343 ! schwarze 1: /* $Id: roff.c,v 1.342 2018/10/25 01:32:40 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:
1.67 kristaps 31: #include "mandoc.h"
1.201 schwarze 32: #include "mandoc_aux.h"
1.295 schwarze 33: #include "mandoc_ohash.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"
1.82 kristaps 38:
1.170 schwarze 39: /* Maximum number of string expansions per line, to break infinite loops. */
40: #define EXPAND_LIMIT 1000
41:
1.315 schwarze 42: /* Types of definitions of macros and strings. */
43: #define ROFFDEF_USER (1 << 1) /* User-defined. */
44: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
45: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
46: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
47: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
48: ROFFDEF_REN | ROFFDEF_STD)
1.325 schwarze 49: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 50:
1.266 schwarze 51: /* --- data types --------------------------------------------------------- */
52:
1.147 kristaps 53: /*
1.167 kristaps 54: * An incredibly-simple string buffer.
55: */
1.94 kristaps 56: struct roffstr {
1.167 kristaps 57: char *p; /* nil-terminated buffer */
58: size_t sz; /* saved strlen(p) */
1.166 kristaps 59: };
60:
61: /*
1.167 kristaps 62: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 63: */
64: struct roffkv {
65: struct roffstr key;
66: struct roffstr val;
67: struct roffkv *next; /* next in list */
1.94 kristaps 68: };
69:
1.180 schwarze 70: /*
71: * A single number register as part of a singly-linked list.
72: */
73: struct roffreg {
74: struct roffstr key;
1.181 schwarze 75: int val;
1.327 schwarze 76: int step;
1.180 schwarze 77: struct roffreg *next;
78: };
79:
1.295 schwarze 80: /*
81: * Association of request and macro names with token IDs.
82: */
83: struct roffreq {
84: enum roff_tok tok;
85: char name[];
86: };
87:
1.339 schwarze 88: /*
89: * A macro processing context.
90: * More than one is needed when macro calls are nested.
91: */
92: struct mctx {
93: char **argv;
94: int argc;
95: int argsz;
96: };
97:
1.67 kristaps 98: struct roff {
1.128 kristaps 99: struct mparse *parse; /* parse point */
1.296 schwarze 100: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 101: struct roffnode *last; /* leaf of stack */
1.339 schwarze 102: struct mctx *mstack; /* stack of macro contexts */
1.223 schwarze 103: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 104: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 105: struct roffreg *regtab; /* number registers */
1.166 kristaps 106: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 107: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 108: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
109: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 110: const char *current_string; /* value of last called user macro */
1.118 kristaps 111: struct tbl_node *first_tbl; /* first table parsed */
112: struct tbl_node *last_tbl; /* last table parsed */
113: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 114: struct eqn_node *last_eqn; /* equation parser */
115: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 116: int eqn_inline; /* current equation is inline */
1.223 schwarze 117: int options; /* parse options */
1.339 schwarze 118: int mstacksz; /* current size of mstack */
119: int mstackpos; /* position in mstack */
1.223 schwarze 120: int rstacksz; /* current size limit of rstack */
121: int rstackpos; /* position in rstack */
1.227 schwarze 122: int format; /* current file in mdoc or man format */
1.223 schwarze 123: char control; /* control character */
1.303 schwarze 124: char escape; /* escape character */
1.79 kristaps 125: };
126:
1.67 kristaps 127: struct roffnode {
1.294 schwarze 128: enum roff_tok tok; /* type of node */
1.67 kristaps 129: struct roffnode *parent; /* up one in stack */
130: int line; /* parse line */
131: int col; /* parse col */
1.106 kristaps 132: char *name; /* node name, e.g. macro name */
1.79 kristaps 133: char *end; /* end-rules: custom token */
134: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 135: int rule; /* current evaluation rule */
1.67 kristaps 136: };
137:
138: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 139: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 140: struct buf *buf, /* input buffer */ \
1.67 kristaps 141: int ln, /* parse line */ \
1.75 kristaps 142: int ppos, /* original pos in buffer */ \
143: int pos, /* current pos in buffer */ \
1.74 kristaps 144: int *offs /* reset offset of buffer data */
1.67 kristaps 145:
1.340 schwarze 146: typedef int (*roffproc)(ROFF_ARGS);
1.67 kristaps 147:
148: struct roffmac {
1.79 kristaps 149: roffproc proc; /* process new macro */
150: roffproc text; /* process as child text of macro */
151: roffproc sub; /* process as child of macro */
152: int flags;
153: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 154: };
155:
1.141 kristaps 156: struct predef {
157: const char *name; /* predefined input name */
158: const char *str; /* replacement symbol */
159: };
160:
161: #define PREDEF(__name, __str) \
162: { (__name), (__str) },
163:
1.266 schwarze 164: /* --- function prototypes ------------------------------------------------ */
165:
1.340 schwarze 166: static int roffnode_cleanscope(struct roff *);
167: static int roffnode_pop(struct roff *);
1.294 schwarze 168: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 169: const char *, int, int);
1.321 schwarze 170: static void roff_addtbl(struct roff_man *, struct tbl_node *);
1.340 schwarze 171: static int roff_als(ROFF_ARGS);
172: static int roff_block(ROFF_ARGS);
173: static int roff_block_text(ROFF_ARGS);
174: static int roff_block_sub(ROFF_ARGS);
175: static int roff_br(ROFF_ARGS);
176: static int roff_cblock(ROFF_ARGS);
177: static int roff_cc(ROFF_ARGS);
178: static int roff_ccond(struct roff *, int, int);
1.341 schwarze 179: static int roff_char(ROFF_ARGS);
1.340 schwarze 180: static int roff_cond(ROFF_ARGS);
181: static int roff_cond_text(ROFF_ARGS);
182: static int roff_cond_sub(ROFF_ARGS);
183: static int roff_ds(ROFF_ARGS);
184: static int roff_ec(ROFF_ARGS);
185: static int roff_eo(ROFF_ARGS);
186: static int roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 187: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 188: static int roff_evalnum(struct roff *, int,
189: const char *, int *, int *, int);
190: static int roff_evalpar(struct roff *, int,
1.261 schwarze 191: const char *, int *, int *, int);
1.198 schwarze 192: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 193: static void roff_free1(struct roff *);
1.180 schwarze 194: static void roff_freereg(struct roffreg *);
1.167 kristaps 195: static void roff_freestr(struct roffkv *);
1.212 schwarze 196: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 197: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 198: static int roff_getop(const char *, int *, char *);
1.327 schwarze 199: static int roff_getregn(struct roff *,
200: const char *, size_t, char);
1.273 schwarze 201: static int roff_getregro(const struct roff *,
202: const char *name);
1.325 schwarze 203: static const char *roff_getstrn(struct roff *,
1.315 schwarze 204: const char *, size_t, int *);
1.271 schwarze 205: static int roff_hasregn(const struct roff *,
206: const char *, size_t);
1.340 schwarze 207: static int roff_insec(ROFF_ARGS);
208: static int roff_it(ROFF_ARGS);
209: static int roff_line_ignore(ROFF_ARGS);
1.265 schwarze 210: static void roff_man_alloc1(struct roff_man *);
211: static void roff_man_free1(struct roff_man *);
1.340 schwarze 212: static int roff_manyarg(ROFF_ARGS);
213: static int roff_nop(ROFF_ARGS);
214: static int roff_nr(ROFF_ARGS);
215: static int roff_onearg(ROFF_ARGS);
1.294 schwarze 216: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 217: int, int);
1.340 schwarze 218: static int roff_parsetext(struct roff *, struct buf *,
1.305 schwarze 219: int, int *);
1.340 schwarze 220: static int roff_renamed(ROFF_ARGS);
221: static int roff_res(struct roff *, struct buf *, int, int);
222: static int roff_return(ROFF_ARGS);
223: static int roff_rm(ROFF_ARGS);
224: static int roff_rn(ROFF_ARGS);
225: static int roff_rr(ROFF_ARGS);
1.326 schwarze 226: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 227: size_t, int, char, int);
1.94 kristaps 228: static void roff_setstr(struct roff *,
1.106 kristaps 229: const char *, const char *, int);
1.207 schwarze 230: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 231: size_t, const char *, size_t, int);
1.340 schwarze 232: static int roff_shift(ROFF_ARGS);
233: static int roff_so(ROFF_ARGS);
234: static int roff_tr(ROFF_ARGS);
235: static int roff_Dd(ROFF_ARGS);
236: static int roff_TE(ROFF_ARGS);
237: static int roff_TS(ROFF_ARGS);
238: static int roff_EQ(ROFF_ARGS);
239: static int roff_EN(ROFF_ARGS);
240: static int roff_T_(ROFF_ARGS);
241: static int roff_unsupp(ROFF_ARGS);
242: static int roff_userdef(ROFF_ARGS);
1.67 kristaps 243:
1.266 schwarze 244: /* --- constant data ------------------------------------------------------ */
245:
1.261 schwarze 246: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
247: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
248:
1.294 schwarze 249: const char *__roff_name[MAN_MAX + 1] = {
1.305 schwarze 250: "br", "ce", "ft", "ll",
1.312 schwarze 251: "mc", "po", "rj", "sp",
252: "ta", "ti", NULL,
1.294 schwarze 253: "ab", "ad", "af", "aln",
254: "als", "am", "am1", "ami",
255: "ami1", "as", "as1", "asciify",
256: "backtrace", "bd", "bleedat", "blm",
257: "box", "boxa", "bp", "BP",
258: "break", "breakchar", "brnl", "brp",
1.305 schwarze 259: "brpnl", "c2", "cc",
1.294 schwarze 260: "cf", "cflags", "ch", "char",
261: "chop", "class", "close", "CL",
262: "color", "composite", "continue", "cp",
263: "cropat", "cs", "cu", "da",
264: "dch", "Dd", "de", "de1",
265: "defcolor", "dei", "dei1", "device",
266: "devicem", "di", "do", "ds",
267: "ds1", "dwh", "dt", "ec",
268: "ecr", "ecs", "el", "em",
269: "EN", "eo", "EP", "EQ",
270: "errprint", "ev", "evc", "ex",
271: "fallback", "fam", "fc", "fchar",
272: "fcolor", "fdeferlig", "feature", "fkern",
273: "fl", "flig", "fp", "fps",
274: "fschar", "fspacewidth", "fspecial", "ftr",
275: "fzoom", "gcolor", "hc", "hcode",
276: "hidechar", "hla", "hlm", "hpf",
277: "hpfa", "hpfcode", "hw", "hy",
278: "hylang", "hylen", "hym", "hypp",
279: "hys", "ie", "if", "ig",
280: "index", "it", "itc", "IX",
281: "kern", "kernafter", "kernbefore", "kernpair",
282: "lc", "lc_ctype", "lds", "length",
283: "letadj", "lf", "lg", "lhang",
284: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 285: "ls", "lsm", "lt",
1.294 schwarze 286: "mediasize", "minss", "mk", "mso",
287: "na", "ne", "nh", "nhychar",
288: "nm", "nn", "nop", "nr",
289: "nrf", "nroff", "ns", "nx",
290: "open", "opena", "os", "output",
291: "padj", "papersize", "pc", "pev",
292: "pi", "PI", "pl", "pm",
1.312 schwarze 293: "pn", "pnr", "ps",
1.294 schwarze 294: "psbb", "pshape", "pso", "ptr",
295: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 296: "return", "rfschar", "rhang",
1.294 schwarze 297: "rm", "rn", "rnn", "rr",
298: "rs", "rt", "schar", "sentchar",
299: "shc", "shift", "sizes", "so",
300: "spacewidth", "special", "spreadwarn", "ss",
301: "sty", "substring", "sv", "sy",
1.300 schwarze 302: "T&", "tc", "TE",
1.301 schwarze 303: "TH", "tkf", "tl",
1.294 schwarze 304: "tm", "tm1", "tmc", "tr",
305: "track", "transchar", "trf", "trimat",
306: "trin", "trnt", "troff", "TS",
307: "uf", "ul", "unformat", "unwatch",
308: "unwatchn", "vpt", "vs", "warn",
309: "warnscale", "watch", "watchlength", "watchn",
310: "wh", "while", "write", "writec",
311: "writem", "xflag", ".", NULL,
1.306 schwarze 312: NULL, "text",
1.294 schwarze 313: "Dd", "Dt", "Os", "Sh",
314: "Ss", "Pp", "D1", "Dl",
315: "Bd", "Ed", "Bl", "El",
316: "It", "Ad", "An", "Ap",
317: "Ar", "Cd", "Cm", "Dv",
318: "Er", "Ev", "Ex", "Fa",
319: "Fd", "Fl", "Fn", "Ft",
320: "Ic", "In", "Li", "Nd",
321: "Nm", "Op", "Ot", "Pa",
322: "Rv", "St", "Va", "Vt",
323: "Xr", "%A", "%B", "%D",
324: "%I", "%J", "%N", "%O",
325: "%P", "%R", "%T", "%V",
326: "Ac", "Ao", "Aq", "At",
327: "Bc", "Bf", "Bo", "Bq",
328: "Bsx", "Bx", "Db", "Dc",
329: "Do", "Dq", "Ec", "Ef",
330: "Em", "Eo", "Fx", "Ms",
331: "No", "Ns", "Nx", "Ox",
332: "Pc", "Pf", "Po", "Pq",
333: "Qc", "Ql", "Qo", "Qq",
334: "Re", "Rs", "Sc", "So",
335: "Sq", "Sm", "Sx", "Sy",
336: "Tn", "Ux", "Xc", "Xo",
337: "Fo", "Fc", "Oo", "Oc",
338: "Bk", "Ek", "Bt", "Hf",
339: "Fr", "Ud", "Lb", "Lp",
340: "Lk", "Mt", "Brq", "Bro",
341: "Brc", "%C", "Es", "En",
1.299 schwarze 342: "Dx", "%Q", "%U", "Ta",
343: NULL,
1.294 schwarze 344: "TH", "SH", "SS", "TP",
1.332 schwarze 345: "TQ",
1.294 schwarze 346: "LP", "PP", "P", "IP",
347: "HP", "SM", "SB", "BI",
348: "IB", "BR", "RB", "R",
349: "B", "I", "IR", "RI",
1.299 schwarze 350: "nf", "fi",
1.294 schwarze 351: "RE", "RS", "DT", "UC",
1.297 schwarze 352: "PD", "AT", "in",
1.333 schwarze 353: "SY", "YS", "OP",
354: "EX", "EE", "UR",
1.317 schwarze 355: "UE", "MT", "ME", NULL
1.294 schwarze 356: };
357: const char *const *roff_name = __roff_name;
358:
359: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 360: { roff_br, NULL, NULL, 0 }, /* br */
1.305 schwarze 361: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.297 schwarze 362: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 363: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 364: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.312 schwarze 365: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 366: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 367: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 368: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 369: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 370: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 371: { roff_unsupp, NULL, NULL, 0 }, /* ab */
372: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
373: { roff_line_ignore, NULL, NULL, 0 }, /* af */
374: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 375: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 376: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
377: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
378: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
379: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
380: { roff_ds, NULL, NULL, 0 }, /* as */
381: { roff_ds, NULL, NULL, 0 }, /* as1 */
382: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
383: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
384: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
385: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
386: { roff_unsupp, NULL, NULL, 0 }, /* blm */
387: { roff_unsupp, NULL, NULL, 0 }, /* box */
388: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
389: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
390: { roff_unsupp, NULL, NULL, 0 }, /* BP */
391: { roff_unsupp, NULL, NULL, 0 }, /* break */
392: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
393: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 394: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 395: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
396: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
397: { roff_cc, NULL, NULL, 0 }, /* cc */
398: { roff_insec, NULL, NULL, 0 }, /* cf */
399: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
400: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.341 schwarze 401: { roff_char, NULL, NULL, 0 }, /* char */
1.295 schwarze 402: { roff_unsupp, NULL, NULL, 0 }, /* chop */
403: { roff_line_ignore, NULL, NULL, 0 }, /* class */
404: { roff_insec, NULL, NULL, 0 }, /* close */
405: { roff_unsupp, NULL, NULL, 0 }, /* CL */
406: { roff_line_ignore, NULL, NULL, 0 }, /* color */
407: { roff_unsupp, NULL, NULL, 0 }, /* composite */
408: { roff_unsupp, NULL, NULL, 0 }, /* continue */
409: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
410: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
411: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
412: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
413: { roff_unsupp, NULL, NULL, 0 }, /* da */
414: { roff_unsupp, NULL, NULL, 0 }, /* dch */
415: { roff_Dd, NULL, NULL, 0 }, /* Dd */
416: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
417: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
418: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
419: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
420: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
421: { roff_unsupp, NULL, NULL, 0 }, /* device */
422: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
423: { roff_unsupp, NULL, NULL, 0 }, /* di */
424: { roff_unsupp, NULL, NULL, 0 }, /* do */
425: { roff_ds, NULL, NULL, 0 }, /* ds */
426: { roff_ds, NULL, NULL, 0 }, /* ds1 */
427: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
428: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 429: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 430: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
431: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
432: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
433: { roff_unsupp, NULL, NULL, 0 }, /* em */
434: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 435: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 436: { roff_unsupp, NULL, NULL, 0 }, /* EP */
437: { roff_EQ, NULL, NULL, 0 }, /* EQ */
438: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
439: { roff_unsupp, NULL, NULL, 0 }, /* ev */
440: { roff_unsupp, NULL, NULL, 0 }, /* evc */
441: { roff_unsupp, NULL, NULL, 0 }, /* ex */
442: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
443: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
444: { roff_unsupp, NULL, NULL, 0 }, /* fc */
445: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
446: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
447: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
448: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
449: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
450: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
451: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
452: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
453: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
454: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
455: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
456: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
457: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
458: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
459: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
460: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
461: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
462: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
463: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
464: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
465: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
466: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
467: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
468: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
469: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
470: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
471: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
472: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
473: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
474: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
475: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
476: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
477: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
478: { roff_unsupp, NULL, NULL, 0 }, /* index */
479: { roff_it, NULL, NULL, 0 }, /* it */
480: { roff_unsupp, NULL, NULL, 0 }, /* itc */
481: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
482: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
483: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
484: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
485: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
486: { roff_unsupp, NULL, NULL, 0 }, /* lc */
487: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
488: { roff_unsupp, NULL, NULL, 0 }, /* lds */
489: { roff_unsupp, NULL, NULL, 0 }, /* length */
490: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
491: { roff_insec, NULL, NULL, 0 }, /* lf */
492: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
493: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
494: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
495: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
496: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
497: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
498: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
499: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
500: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
501: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
502: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
503: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
504: { roff_insec, NULL, NULL, 0 }, /* mso */
505: { roff_line_ignore, NULL, NULL, 0 }, /* na */
506: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
507: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
508: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
509: { roff_unsupp, NULL, NULL, 0 }, /* nm */
510: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 511: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 512: { roff_nr, NULL, NULL, 0 }, /* nr */
513: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
514: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
515: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
516: { roff_insec, NULL, NULL, 0 }, /* nx */
517: { roff_insec, NULL, NULL, 0 }, /* open */
518: { roff_insec, NULL, NULL, 0 }, /* opena */
519: { roff_line_ignore, NULL, NULL, 0 }, /* os */
520: { roff_unsupp, NULL, NULL, 0 }, /* output */
521: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
522: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
523: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
524: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
525: { roff_insec, NULL, NULL, 0 }, /* pi */
526: { roff_unsupp, NULL, NULL, 0 }, /* PI */
527: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
528: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
529: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
530: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
531: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
532: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
533: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
534: { roff_insec, NULL, NULL, 0 }, /* pso */
535: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
536: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
537: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
538: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
539: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 schwarze 540: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 541: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
542: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
543: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 544: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 545: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
546: { roff_rr, NULL, NULL, 0 }, /* rr */
547: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
548: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
549: { roff_unsupp, NULL, NULL, 0 }, /* schar */
550: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
551: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 schwarze 552: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 553: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
554: { roff_so, NULL, NULL, 0 }, /* so */
555: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
556: { roff_line_ignore, NULL, NULL, 0 }, /* special */
557: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
558: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
559: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
560: { roff_unsupp, NULL, NULL, 0 }, /* substring */
561: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
562: { roff_insec, NULL, NULL, 0 }, /* sy */
563: { roff_T_, NULL, NULL, 0 }, /* T& */
564: { roff_unsupp, NULL, NULL, 0 }, /* tc */
565: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 566: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 567: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
568: { roff_unsupp, NULL, NULL, 0 }, /* tl */
569: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
570: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
571: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
572: { roff_tr, NULL, NULL, 0 }, /* tr */
573: { roff_line_ignore, NULL, NULL, 0 }, /* track */
574: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
575: { roff_insec, NULL, NULL, 0 }, /* trf */
576: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
577: { roff_unsupp, NULL, NULL, 0 }, /* trin */
578: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
579: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
580: { roff_TS, NULL, NULL, 0 }, /* TS */
581: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
582: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
583: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
584: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
585: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
586: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
587: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
588: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
589: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
590: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
591: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
592: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
593: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.340 schwarze 594: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.295 schwarze 595: { roff_insec, NULL, NULL, 0 }, /* write */
596: { roff_insec, NULL, NULL, 0 }, /* writec */
597: { roff_insec, NULL, NULL, 0 }, /* writem */
598: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
599: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 600: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 601: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 602: };
603:
1.141 kristaps 604: /* Array of injected predefined strings. */
605: #define PREDEFS_MAX 38
606: static const struct predef predefs[PREDEFS_MAX] = {
607: #include "predefs.in"
608: };
609:
1.305 schwarze 610: static int roffce_lines; /* number of input lines to center */
611: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 612: static int roffit_lines; /* number of lines to delay */
613: static char *roffit_macro; /* nil-terminated macro line */
614:
1.207 schwarze 615:
1.266 schwarze 616: /* --- request table ------------------------------------------------------ */
617:
1.295 schwarze 618: struct ohash *
619: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 620: {
1.295 schwarze 621: struct ohash *htab;
622: struct roffreq *req;
623: enum roff_tok tok;
624: size_t sz;
625: unsigned int slot;
1.85 kristaps 626:
1.295 schwarze 627: htab = mandoc_malloc(sizeof(*htab));
628: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 629:
1.295 schwarze 630: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 631: if (roff_name[tok] == NULL)
632: continue;
1.295 schwarze 633: sz = strlen(roff_name[tok]);
634: req = mandoc_malloc(sizeof(*req) + sz + 1);
635: req->tok = tok;
636: memcpy(req->name, roff_name[tok], sz + 1);
637: slot = ohash_qlookup(htab, req->name);
638: ohash_insert(htab, slot, req);
1.85 kristaps 639: }
1.295 schwarze 640: return htab;
1.85 kristaps 641: }
642:
1.295 schwarze 643: void
644: roffhash_free(struct ohash *htab)
1.67 kristaps 645: {
1.295 schwarze 646: struct roffreq *req;
647: unsigned int slot;
1.67 kristaps 648:
1.295 schwarze 649: if (htab == NULL)
650: return;
651: for (req = ohash_first(htab, &slot); req != NULL;
652: req = ohash_next(htab, &slot))
653: free(req);
654: ohash_delete(htab);
655: free(htab);
656: }
657:
658: enum roff_tok
659: roffhash_find(struct ohash *htab, const char *name, size_t sz)
660: {
661: struct roffreq *req;
662: const char *end;
663:
664: if (sz) {
665: end = name + sz;
666: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
667: } else
668: req = ohash_find(htab, ohash_qlookup(htab, name));
669: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 670: }
671:
1.266 schwarze 672: /* --- stack of request blocks -------------------------------------------- */
673:
1.67 kristaps 674: /*
675: * Pop the current node off of the stack of roff instructions currently
676: * pending.
677: */
1.340 schwarze 678: static int
1.67 kristaps 679: roffnode_pop(struct roff *r)
680: {
681: struct roffnode *p;
1.340 schwarze 682: int inloop;
1.67 kristaps 683:
1.207 schwarze 684: p = r->last;
1.340 schwarze 685: inloop = p->tok == ROFF_while;
686: r->last = p->parent;
1.106 kristaps 687: free(p->name);
688: free(p->end);
1.67 kristaps 689: free(p);
1.340 schwarze 690: return inloop;
1.67 kristaps 691: }
692:
693: /*
694: * Push a roff node onto the instruction stack. This must later be
695: * removed with roffnode_pop().
696: */
1.98 schwarze 697: static void
1.294 schwarze 698: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 699: int line, int col)
1.67 kristaps 700: {
701: struct roffnode *p;
702:
1.98 schwarze 703: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 704: p->tok = tok;
1.106 kristaps 705: if (name)
706: p->name = mandoc_strdup(name);
1.67 kristaps 707: p->parent = r->last;
708: p->line = line;
709: p->col = col;
1.198 schwarze 710: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 711:
712: r->last = p;
713: }
714:
1.266 schwarze 715: /* --- roff parser state data management ---------------------------------- */
716:
1.67 kristaps 717: static void
718: roff_free1(struct roff *r)
719: {
1.176 schwarze 720: struct tbl_node *tbl;
1.167 kristaps 721: int i;
1.67 kristaps 722:
1.176 schwarze 723: while (NULL != (tbl = r->first_tbl)) {
724: r->first_tbl = tbl->next;
725: tbl_free(tbl);
1.109 kristaps 726: }
1.113 kristaps 727: r->first_tbl = r->last_tbl = r->tbl = NULL;
728:
1.319 schwarze 729: if (r->last_eqn != NULL)
730: eqn_free(r->last_eqn);
731: r->last_eqn = r->eqn = NULL;
1.125 kristaps 732:
1.339 schwarze 733: while (r->mstackpos >= 0)
734: roff_userret(r);
735:
1.67 kristaps 736: while (r->last)
737: roffnode_pop(r);
1.109 kristaps 738:
1.223 schwarze 739: free (r->rstack);
740: r->rstack = NULL;
741: r->rstacksz = 0;
742: r->rstackpos = -1;
743:
744: roff_freereg(r->regtab);
745: r->regtab = NULL;
746:
1.167 kristaps 747: roff_freestr(r->strtab);
1.306 schwarze 748: roff_freestr(r->rentab);
1.167 kristaps 749: roff_freestr(r->xmbtab);
1.306 schwarze 750: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 751:
752: if (r->xtab)
753: for (i = 0; i < 128; i++)
754: free(r->xtab[i].p);
755: free(r->xtab);
756: r->xtab = NULL;
1.67 kristaps 757: }
758:
759: void
760: roff_reset(struct roff *r)
761: {
762: roff_free1(r);
1.227 schwarze 763: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 764: r->control = '\0';
765: r->escape = '\\';
1.307 schwarze 766: roffce_lines = 0;
767: roffce_node = NULL;
768: roffit_lines = 0;
769: roffit_macro = NULL;
1.67 kristaps 770: }
771:
772: void
773: roff_free(struct roff *r)
774: {
1.339 schwarze 775: int i;
776:
1.67 kristaps 777: roff_free1(r);
1.339 schwarze 778: for (i = 0; i < r->mstacksz; i++)
779: free(r->mstack[i].argv);
780: free(r->mstack);
1.295 schwarze 781: roffhash_free(r->reqtab);
1.67 kristaps 782: free(r);
783: }
784:
785: struct roff *
1.279 schwarze 786: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 787: {
788: struct roff *r;
789:
1.98 schwarze 790: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 791: r->parse = parse;
1.328 schwarze 792: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.199 schwarze 793: r->options = options;
1.227 schwarze 794: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 795: r->mstackpos = -1;
1.82 kristaps 796: r->rstackpos = -1;
1.303 schwarze 797: r->escape = '\\';
1.277 schwarze 798: return r;
1.265 schwarze 799: }
800:
1.266 schwarze 801: /* --- syntax tree state data management ---------------------------------- */
802:
1.265 schwarze 803: static void
804: roff_man_free1(struct roff_man *man)
805: {
806:
1.266 schwarze 807: if (man->first != NULL)
808: roff_node_delete(man, man->first);
1.265 schwarze 809: free(man->meta.msec);
810: free(man->meta.vol);
811: free(man->meta.os);
812: free(man->meta.arch);
813: free(man->meta.title);
814: free(man->meta.name);
815: free(man->meta.date);
816: }
817:
818: static void
819: roff_man_alloc1(struct roff_man *man)
820: {
821:
822: memset(&man->meta, 0, sizeof(man->meta));
823: man->first = mandoc_calloc(1, sizeof(*man->first));
824: man->first->type = ROFFT_ROOT;
825: man->last = man->first;
826: man->last_es = NULL;
827: man->flags = 0;
828: man->macroset = MACROSET_NONE;
829: man->lastsec = man->lastnamed = SEC_NONE;
830: man->next = ROFF_NEXT_CHILD;
831: }
832:
833: void
834: roff_man_reset(struct roff_man *man)
835: {
836:
837: roff_man_free1(man);
838: roff_man_alloc1(man);
839: }
840:
841: void
842: roff_man_free(struct roff_man *man)
843: {
844:
845: roff_man_free1(man);
846: free(man);
847: }
848:
849: struct roff_man *
850: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.316 schwarze 851: const char *os_s, int quick)
1.265 schwarze 852: {
853: struct roff_man *man;
854:
855: man = mandoc_calloc(1, sizeof(*man));
856: man->parse = parse;
857: man->roff = roff;
1.316 schwarze 858: man->os_s = os_s;
1.265 schwarze 859: man->quick = quick;
860: roff_man_alloc1(man);
1.296 schwarze 861: roff->man = man;
1.277 schwarze 862: return man;
1.67 kristaps 863: }
864:
1.266 schwarze 865: /* --- syntax tree handling ----------------------------------------------- */
866:
867: struct roff_node *
868: roff_node_alloc(struct roff_man *man, int line, int pos,
869: enum roff_type type, int tok)
870: {
871: struct roff_node *n;
872:
873: n = mandoc_calloc(1, sizeof(*n));
874: n->line = line;
875: n->pos = pos;
876: n->tok = tok;
877: n->type = type;
878: n->sec = man->lastsec;
879:
880: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 881: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 882: else
1.285 schwarze 883: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 884: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 885: n->flags |= NODE_LINE;
1.266 schwarze 886: man->flags &= ~MDOC_NEWLINE;
887:
1.277 schwarze 888: return n;
1.266 schwarze 889: }
890:
891: void
892: roff_node_append(struct roff_man *man, struct roff_node *n)
893: {
894:
895: switch (man->next) {
896: case ROFF_NEXT_SIBLING:
1.281 schwarze 897: if (man->last->next != NULL) {
898: n->next = man->last->next;
899: man->last->next->prev = n;
900: } else
901: man->last->parent->last = n;
1.266 schwarze 902: man->last->next = n;
903: n->prev = man->last;
904: n->parent = man->last->parent;
905: break;
906: case ROFF_NEXT_CHILD:
1.287 schwarze 907: if (man->last->child != NULL) {
908: n->next = man->last->child;
909: man->last->child->prev = n;
910: } else
911: man->last->last = n;
1.266 schwarze 912: man->last->child = n;
913: n->parent = man->last;
914: break;
915: default:
916: abort();
917: }
1.282 schwarze 918: man->last = n;
1.266 schwarze 919:
920: switch (n->type) {
921: case ROFFT_HEAD:
922: n->parent->head = n;
923: break;
924: case ROFFT_BODY:
1.282 schwarze 925: if (n->end != ENDBODY_NOT)
926: return;
1.266 schwarze 927: n->parent->body = n;
928: break;
929: case ROFFT_TAIL:
930: n->parent->tail = n;
931: break;
932: default:
1.282 schwarze 933: return;
1.266 schwarze 934: }
1.282 schwarze 935:
936: /*
937: * Copy over the normalised-data pointer of our parent. Not
938: * everybody has one, but copying a null pointer is fine.
939: */
940:
941: n->norm = n->parent->norm;
942: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 943: }
944:
1.267 schwarze 945: void
946: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
947: {
948: struct roff_node *n;
949:
950: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
951: n->string = roff_strdup(man->roff, word);
952: roff_node_append(man, n);
1.286 schwarze 953: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 954: man->next = ROFF_NEXT_SIBLING;
955: }
956:
957: void
958: roff_word_append(struct roff_man *man, const char *word)
959: {
960: struct roff_node *n;
961: char *addstr, *newstr;
962:
963: n = man->last;
964: addstr = roff_strdup(man->roff, word);
965: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
966: free(addstr);
967: free(n->string);
968: n->string = newstr;
969: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 970: }
971:
972: void
973: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
974: {
975: struct roff_node *n;
976:
977: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
978: roff_node_append(man, n);
979: man->next = ROFF_NEXT_CHILD;
980: }
981:
982: struct roff_node *
983: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
984: {
985: struct roff_node *n;
986:
987: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
988: roff_node_append(man, n);
989: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 990: return n;
1.267 schwarze 991: }
992:
1.266 schwarze 993: struct roff_node *
994: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
995: {
996: struct roff_node *n;
997:
998: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
999: roff_node_append(man, n);
1000: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1001: return n;
1.266 schwarze 1002: }
1003:
1004: struct roff_node *
1005: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1006: {
1007: struct roff_node *n;
1008:
1009: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1010: roff_node_append(man, n);
1011: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1012: return n;
1.267 schwarze 1013: }
1014:
1.321 schwarze 1015: static void
1016: roff_addtbl(struct roff_man *man, struct tbl_node *tbl)
1.267 schwarze 1017: {
1018: struct roff_node *n;
1.321 schwarze 1019: const struct tbl_span *span;
1.267 schwarze 1020:
1021: if (man->macroset == MACROSET_MAN)
1.302 schwarze 1022: man_breakscope(man, ROFF_TS);
1.321 schwarze 1023: while ((span = tbl_span(tbl)) != NULL) {
1024: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1025: n->span = span;
1026: roff_node_append(man, n);
1027: n->flags |= NODE_VALID | NODE_ENDED;
1028: man->next = ROFF_NEXT_SIBLING;
1029: }
1.266 schwarze 1030: }
1031:
1032: void
1033: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1034: {
1035:
1036: /* Adjust siblings. */
1037:
1038: if (n->prev)
1039: n->prev->next = n->next;
1040: if (n->next)
1041: n->next->prev = n->prev;
1042:
1043: /* Adjust parent. */
1044:
1045: if (n->parent != NULL) {
1046: if (n->parent->child == n)
1047: n->parent->child = n->next;
1048: if (n->parent->last == n)
1049: n->parent->last = n->prev;
1050: }
1051:
1052: /* Adjust parse point. */
1053:
1054: if (man == NULL)
1055: return;
1056: if (man->last == n) {
1057: if (n->prev == NULL) {
1058: man->last = n->parent;
1059: man->next = ROFF_NEXT_CHILD;
1060: } else {
1061: man->last = n->prev;
1062: man->next = ROFF_NEXT_SIBLING;
1063: }
1064: }
1065: if (man->first == n)
1066: man->first = NULL;
1067: }
1068:
1069: void
1070: roff_node_free(struct roff_node *n)
1071: {
1072:
1073: if (n->args != NULL)
1074: mdoc_argv_free(n->args);
1075: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1076: free(n->norm);
1.319 schwarze 1077: if (n->eqn != NULL)
1078: eqn_box_free(n->eqn);
1.266 schwarze 1079: free(n->string);
1080: free(n);
1081: }
1082:
1083: void
1084: roff_node_delete(struct roff_man *man, struct roff_node *n)
1085: {
1086:
1087: while (n->child != NULL)
1088: roff_node_delete(man, n->child);
1089: roff_node_unlink(man, n);
1090: roff_node_free(n);
1.269 schwarze 1091: }
1092:
1093: void
1094: deroff(char **dest, const struct roff_node *n)
1095: {
1096: char *cp;
1097: size_t sz;
1098:
1099: if (n->type != ROFFT_TEXT) {
1100: for (n = n->child; n != NULL; n = n->next)
1101: deroff(dest, n);
1102: return;
1103: }
1104:
1.288 schwarze 1105: /* Skip leading whitespace. */
1.269 schwarze 1106:
1.288 schwarze 1107: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1108: if (cp[0] == '\\' && cp[1] != '\0' &&
1109: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1110: cp++;
1.288 schwarze 1111: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1112: break;
1113: }
1114:
1.289 schwarze 1115: /* Skip trailing backslash. */
1116:
1117: sz = strlen(cp);
1.290 schwarze 1118: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1119: sz--;
1120:
1.269 schwarze 1121: /* Skip trailing whitespace. */
1122:
1.289 schwarze 1123: for (; sz; sz--)
1.269 schwarze 1124: if ( ! isspace((unsigned char)cp[sz-1]))
1125: break;
1126:
1127: /* Skip empty strings. */
1128:
1129: if (sz == 0)
1130: return;
1131:
1132: if (*dest == NULL) {
1133: *dest = mandoc_strndup(cp, sz);
1134: return;
1135: }
1136:
1137: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1138: free(*dest);
1139: *dest = cp;
1.266 schwarze 1140: }
1141:
1142: /* --- main functions of the roff parser ---------------------------------- */
1143:
1.94 kristaps 1144: /*
1.206 schwarze 1145: * In the current line, expand escape sequences that tend to get
1146: * used in numerical expressions and conditional requests.
1147: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1148: */
1.340 schwarze 1149: static int
1.238 schwarze 1150: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1151: {
1.339 schwarze 1152: struct mctx *ctx; /* current macro call context */
1.208 schwarze 1153: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1154: struct roff_node *n; /* used for header comments */
1.205 schwarze 1155: const char *start; /* start of the string to process */
1.209 schwarze 1156: char *stesc; /* start of an escape sequence ('\\') */
1.328 schwarze 1157: char *ep; /* end of comment string */
1.108 schwarze 1158: const char *stnam; /* start of the name, after "[(*" */
1159: const char *cp; /* end of the name, e.g. before ']' */
1160: const char *res; /* the string to be substituted */
1.238 schwarze 1161: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1162: size_t maxl; /* expected length of the escape name */
1163: size_t naml; /* actual length of the escape name */
1.339 schwarze 1164: size_t asz; /* length of the replacement */
1165: size_t rsz; /* length of the rest of the string */
1.237 schwarze 1166: enum mandoc_esc esc; /* type of the escape sequence */
1167: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1168: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1169: int npos; /* position in numeric expression */
1.218 schwarze 1170: int arg_complete; /* argument not interrupted by eol */
1.339 schwarze 1171: int quote_args; /* true for \\$@, false for \\$* */
1.303 schwarze 1172: int done; /* no more input available */
1.315 schwarze 1173: int deftype; /* type of definition to paste */
1.323 schwarze 1174: int rcsid; /* kind of RCS id seen */
1.327 schwarze 1175: char sign; /* increment number register */
1.206 schwarze 1176: char term; /* character terminating the escape */
1.94 kristaps 1177:
1.303 schwarze 1178: /* Search forward for comments. */
1179:
1180: done = 0;
1181: start = buf->buf + pos;
1182: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1183: if (stesc[0] != r->escape || stesc[1] == '\0')
1184: continue;
1185: stesc++;
1186: if (*stesc != '"' && *stesc != '#')
1187: continue;
1.313 schwarze 1188:
1189: /* Comment found, look for RCS id. */
1190:
1.323 schwarze 1191: rcsid = 0;
1.313 schwarze 1192: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1193: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1194: cp += 8;
1195: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1196: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1197: cp += 7;
1198: }
1199: if (cp != NULL &&
1200: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1201: strchr(cp, '$') != NULL) {
1.323 schwarze 1202: if (r->man->meta.rcsids & rcsid)
1.314 schwarze 1203: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1204: ln, stesc + 1 - buf->buf, stesc + 1);
1.323 schwarze 1205: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1206: }
1.313 schwarze 1207:
1208: /* Handle trailing whitespace. */
1209:
1.328 schwarze 1210: ep = strchr(stesc--, '\0') - 1;
1211: if (*ep == '\n') {
1.303 schwarze 1212: done = 1;
1.328 schwarze 1213: ep--;
1.303 schwarze 1214: }
1.328 schwarze 1215: if (*ep == ' ' || *ep == '\t')
1.303 schwarze 1216: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1.328 schwarze 1217: ln, ep - buf->buf, NULL);
1218:
1219: /*
1220: * Save comments preceding the title macro
1221: * in the syntax tree.
1222: */
1223:
1224: if (r->format == 0) {
1225: while (*ep == ' ' || *ep == '\t')
1226: ep--;
1227: ep[1] = '\0';
1228: n = roff_node_alloc(r->man,
1229: ln, stesc + 1 - buf->buf,
1230: ROFFT_COMMENT, TOKEN_NONE);
1231: n->string = mandoc_strdup(stesc + 2);
1232: roff_node_append(r->man, n);
1233: n->flags |= NODE_VALID | NODE_ENDED;
1234: r->man->next = ROFF_NEXT_SIBLING;
1235: }
1236:
1.334 schwarze 1237: /* Line continuation with comment. */
1238:
1239: if (stesc[1] == '#') {
1240: *stesc = '\0';
1.340 schwarze 1241: return ROFF_IGN | ROFF_APPEND;
1.334 schwarze 1242: }
1243:
1244: /* Discard normal comments. */
1.328 schwarze 1245:
1.335 schwarze 1246: while (stesc > start && stesc[-1] == ' ' &&
1247: (stesc == start + 1 || stesc[-2] != '\\'))
1.303 schwarze 1248: stesc--;
1249: *stesc = '\0';
1250: break;
1251: }
1252: if (stesc == start)
1253: return ROFF_CONT;
1254: stesc--;
1255:
1256: /* Notice the end of the input. */
1257:
1258: if (*stesc == '\n') {
1259: *stesc-- = '\0';
1260: done = 1;
1261: }
1262:
1.170 schwarze 1263: expand_count = 0;
1.303 schwarze 1264: while (stesc >= start) {
1.170 schwarze 1265:
1.205 schwarze 1266: /* Search backwards for the next backslash. */
1267:
1.303 schwarze 1268: if (*stesc != r->escape) {
1269: if (*stesc == '\\') {
1270: *stesc = '\0';
1271: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1272: buf->buf, stesc + 1) + 1;
1273: start = nbuf + pos;
1274: stesc = nbuf + (stesc - buf->buf);
1275: free(buf->buf);
1276: buf->buf = nbuf;
1277: }
1278: stesc--;
1.205 schwarze 1279: continue;
1.303 schwarze 1280: }
1.205 schwarze 1281:
1282: /* If it is escaped, skip it. */
1283:
1284: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1285: if (*cp != r->escape)
1.205 schwarze 1286: break;
1287:
1.238 schwarze 1288: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1289: while (stesc > cp)
1290: *stesc-- = '\\';
1.205 schwarze 1291: continue;
1.303 schwarze 1292: } else if (stesc[1] != '\0') {
1293: *stesc = '\\';
1294: } else {
1295: *stesc-- = '\0';
1296: if (done)
1297: continue;
1298: else
1.340 schwarze 1299: return ROFF_IGN | ROFF_APPEND;
1.205 schwarze 1300: }
1.108 schwarze 1301:
1.206 schwarze 1302: /* Decide whether to expand or to check only. */
1.108 schwarze 1303:
1.206 schwarze 1304: term = '\0';
1.205 schwarze 1305: cp = stesc + 1;
1.181 schwarze 1306: switch (*cp) {
1.207 schwarze 1307: case '*':
1.339 schwarze 1308: case '$':
1.181 schwarze 1309: res = NULL;
1310: break;
1.207 schwarze 1311: case 'B':
1312: case 'w':
1.206 schwarze 1313: term = cp[1];
1314: /* FALLTHROUGH */
1.207 schwarze 1315: case 'n':
1.327 schwarze 1316: sign = cp[1];
1317: if (sign == '+' || sign == '-')
1318: cp++;
1.181 schwarze 1319: res = ubuf;
1320: break;
1321: default:
1.237 schwarze 1322: esc = mandoc_escape(&cp, &stnam, &inaml);
1323: if (esc == ESCAPE_ERROR ||
1324: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1325: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1326: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1327: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1328: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1329: stesc--;
1.205 schwarze 1330: continue;
1.152 kristaps 1331: }
1332:
1.205 schwarze 1333: if (EXPAND_LIMIT < ++expand_count) {
1334: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1335: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1336: return ROFF_IGN;
1.205 schwarze 1337: }
1.108 schwarze 1338:
1339: /*
1340: * The third character decides the length
1.181 schwarze 1341: * of the name of the string or register.
1.108 schwarze 1342: * Save a pointer to the name.
1343: */
1344:
1.238 schwarze 1345: if (term == '\0') {
1.206 schwarze 1346: switch (*++cp) {
1.207 schwarze 1347: case '\0':
1.206 schwarze 1348: maxl = 0;
1349: break;
1.207 schwarze 1350: case '(':
1.206 schwarze 1351: cp++;
1352: maxl = 2;
1353: break;
1.207 schwarze 1354: case '[':
1.206 schwarze 1355: cp++;
1356: term = ']';
1357: maxl = 0;
1358: break;
1359: default:
1360: maxl = 1;
1361: break;
1362: }
1363: } else {
1364: cp += 2;
1.94 kristaps 1365: maxl = 0;
1366: }
1.108 schwarze 1367: stnam = cp;
1.94 kristaps 1368:
1.108 schwarze 1369: /* Advance to the end of the name. */
1.94 kristaps 1370:
1.253 schwarze 1371: naml = 0;
1.218 schwarze 1372: arg_complete = 1;
1.253 schwarze 1373: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1374: if (*cp == '\0') {
1.219 schwarze 1375: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1376: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1377: arg_complete = 0;
1.206 schwarze 1378: break;
1.153 kristaps 1379: }
1.238 schwarze 1380: if (maxl == 0 && *cp == term) {
1.206 schwarze 1381: cp++;
1.253 schwarze 1382: break;
1383: }
1384: if (*cp++ != '\\' || stesc[1] != 'w') {
1385: naml++;
1386: continue;
1387: }
1388: switch (mandoc_escape(&cp, NULL, NULL)) {
1389: case ESCAPE_SPECIAL:
1390: case ESCAPE_UNICODE:
1391: case ESCAPE_NUMBERED:
1392: case ESCAPE_OVERSTRIKE:
1393: naml++;
1394: break;
1395: default:
1.94 kristaps 1396: break;
1.206 schwarze 1397: }
1.94 kristaps 1398: }
1399:
1.108 schwarze 1400: /*
1401: * Retrieve the replacement string; if it is
1402: * undefined, resume searching for escapes.
1403: */
1404:
1.206 schwarze 1405: switch (stesc[1]) {
1.207 schwarze 1406: case '*':
1.315 schwarze 1407: if (arg_complete) {
1408: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1409: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1410:
1411: /*
1412: * If not overriden, let \*(.T
1413: * through to the formatters.
1414: */
1415:
1416: if (res == NULL && naml == 2 &&
1417: stnam[0] == '.' && stnam[1] == 'T') {
1418: roff_setstrn(&r->strtab,
1419: ".T", 2, NULL, 0, 0);
1420: stesc--;
1421: continue;
1422: }
1.315 schwarze 1423: }
1.206 schwarze 1424: break;
1.339 schwarze 1425: case '$':
1426: if (r->mstackpos < 0) {
1427: mandoc_vmsg(MANDOCERR_ARG_UNDEF,
1428: r->parse, ln, (int)(stesc - buf->buf),
1429: "%.3s", stesc);
1430: break;
1431: }
1432: ctx = r->mstack + r->mstackpos;
1433: npos = stesc[2] - '1';
1434: if (npos >= 0 && npos <= 8) {
1435: res = npos < ctx->argc ?
1436: ctx->argv[npos] : "";
1437: break;
1438: }
1439: if (stesc[2] == '*')
1440: quote_args = 0;
1441: else if (stesc[2] == '@')
1442: quote_args = 1;
1443: else {
1444: mandoc_vmsg(MANDOCERR_ARG_NONUM,
1445: r->parse, ln, (int)(stesc - buf->buf),
1446: "%.3s", stesc);
1447: break;
1448: }
1449: asz = 0;
1450: for (npos = 0; npos < ctx->argc; npos++) {
1451: if (npos)
1452: asz++; /* blank */
1453: if (quote_args)
1454: asz += 2; /* quotes */
1455: asz += strlen(ctx->argv[npos]);
1456: }
1457: if (asz != 3) {
1458: rsz = buf->sz - (stesc - buf->buf) - 3;
1459: if (asz < 3)
1460: memmove(stesc + asz, stesc + 3, rsz);
1461: buf->sz += asz - 3;
1462: nbuf = mandoc_realloc(buf->buf, buf->sz);
1463: start = nbuf + pos;
1464: stesc = nbuf + (stesc - buf->buf);
1465: buf->buf = nbuf;
1466: if (asz > 3)
1467: memmove(stesc + asz, stesc + 3, rsz);
1468: }
1469: for (npos = 0; npos < ctx->argc; npos++) {
1470: if (npos)
1471: *stesc++ = ' ';
1472: if (quote_args)
1473: *stesc++ = '"';
1474: cp = ctx->argv[npos];
1475: while (*cp != '\0')
1476: *stesc++ = *cp++;
1477: if (quote_args)
1478: *stesc++ = '"';
1479: }
1480: continue;
1.207 schwarze 1481: case 'B':
1.206 schwarze 1482: npos = 0;
1.218 schwarze 1483: ubuf[0] = arg_complete &&
1.261 schwarze 1484: roff_evalnum(r, ln, stnam, &npos,
1485: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1486: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1487: ubuf[1] = '\0';
1488: break;
1.207 schwarze 1489: case 'n':
1.218 schwarze 1490: if (arg_complete)
1491: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1492: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1493: else
1494: ubuf[0] = '\0';
1.206 schwarze 1495: break;
1.207 schwarze 1496: case 'w':
1.218 schwarze 1497: /* use even incomplete args */
1.208 schwarze 1498: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1499: 24 * (int)naml);
1500: break;
1501: }
1.94 kristaps 1502:
1.238 schwarze 1503: if (res == NULL) {
1.339 schwarze 1504: if (stesc[1] == '*')
1505: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1506: r->parse, ln, (int)(stesc - buf->buf),
1507: "%.*s", (int)naml, stnam);
1.142 kristaps 1508: res = "";
1.246 schwarze 1509: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1510: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1511: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1512: return ROFF_IGN;
1.94 kristaps 1513: }
1514:
1.108 schwarze 1515: /* Replace the escape sequence by the string. */
1516:
1.209 schwarze 1517: *stesc = '\0';
1.238 schwarze 1518: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1519: buf->buf, res, cp) + 1;
1.94 kristaps 1520:
1.205 schwarze 1521: /* Prepare for the next replacement. */
1.94 kristaps 1522:
1.205 schwarze 1523: start = nbuf + pos;
1.238 schwarze 1524: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1525: free(buf->buf);
1526: buf->buf = nbuf;
1.154 kristaps 1527: }
1.277 schwarze 1528: return ROFF_CONT;
1.154 kristaps 1529: }
1530:
1531: /*
1.275 schwarze 1532: * Process text streams.
1.154 kristaps 1533: */
1.340 schwarze 1534: static int
1.305 schwarze 1535: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1536: {
1537: size_t sz;
1538: const char *start;
1.178 schwarze 1539: char *p;
1540: int isz;
1.154 kristaps 1541: enum mandoc_esc esc;
1542:
1.275 schwarze 1543: /* Spring the input line trap. */
1544:
1545: if (roffit_lines == 1) {
1546: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1547: free(buf->buf);
1548: buf->buf = p;
1549: buf->sz = isz + 1;
1550: *offs = 0;
1551: free(roffit_macro);
1552: roffit_lines = 0;
1.277 schwarze 1553: return ROFF_REPARSE;
1.275 schwarze 1554: } else if (roffit_lines > 1)
1555: --roffit_lines;
1556:
1.305 schwarze 1557: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1558: if (roffce_lines < 1) {
1559: r->man->last = roffce_node;
1560: r->man->next = ROFF_NEXT_SIBLING;
1561: roffce_lines = 0;
1562: roffce_node = NULL;
1563: } else
1564: roffce_lines--;
1565: }
1566:
1.275 schwarze 1567: /* Convert all breakable hyphens into ASCII_HYPH. */
1568:
1.238 schwarze 1569: start = p = buf->buf + pos;
1.154 kristaps 1570:
1.238 schwarze 1571: while (*p != '\0') {
1.154 kristaps 1572: sz = strcspn(p, "-\\");
1573: p += sz;
1574:
1.238 schwarze 1575: if (*p == '\0')
1.159 kristaps 1576: break;
1577:
1.238 schwarze 1578: if (*p == '\\') {
1.154 kristaps 1579: /* Skip over escapes. */
1580: p++;
1.189 schwarze 1581: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1582: if (esc == ESCAPE_ERROR)
1.154 kristaps 1583: break;
1.264 schwarze 1584: while (*p == '-')
1585: p++;
1.155 kristaps 1586: continue;
1.159 kristaps 1587: } else if (p == start) {
1.158 kristaps 1588: p++;
1.155 kristaps 1589: continue;
1.158 kristaps 1590: }
1.155 kristaps 1591:
1.171 schwarze 1592: if (isalpha((unsigned char)p[-1]) &&
1593: isalpha((unsigned char)p[1]))
1.155 kristaps 1594: *p = ASCII_HYPH;
1595: p++;
1.94 kristaps 1596: }
1.277 schwarze 1597: return ROFF_CONT;
1.94 kristaps 1598: }
1599:
1.340 schwarze 1600: int
1.238 schwarze 1601: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1602: {
1.294 schwarze 1603: enum roff_tok t;
1.340 schwarze 1604: int e;
1.238 schwarze 1605: int pos; /* parse point */
1.243 schwarze 1606: int spos; /* saved parse point for messages */
1.238 schwarze 1607: int ppos; /* original offset in buf->buf */
1608: int ctl; /* macro line (boolean) */
1609:
1610: ppos = pos = *offs;
1.79 kristaps 1611:
1.230 schwarze 1612: /* Handle in-line equation delimiters. */
1613:
1.236 schwarze 1614: if (r->tbl == NULL &&
1615: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1616: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1617: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1618: if (e == ROFF_REPARSE)
1.277 schwarze 1619: return e;
1.230 schwarze 1620: assert(e == ROFF_CONT);
1621: }
1622:
1623: /* Expand some escape sequences. */
1.94 kristaps 1624:
1.238 schwarze 1625: e = roff_res(r, buf, ln, pos);
1.340 schwarze 1626: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1627: return e;
1.238 schwarze 1628: assert(e == ROFF_CONT);
1.94 kristaps 1629:
1.238 schwarze 1630: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1631:
1.94 kristaps 1632: /*
1.79 kristaps 1633: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1634: * text through the macro's filter.
1635: * Equations process all content themselves.
1636: * Tables process almost all content themselves, but we want
1637: * to warn about macros before passing it there.
1.79 kristaps 1638: */
1.74 kristaps 1639:
1.252 schwarze 1640: if (r->last != NULL && ! ctl) {
1.78 kristaps 1641: t = r->last->tok;
1.238 schwarze 1642: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1643: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1644: return e;
1.340 schwarze 1645: e &= ~ROFF_MASK;
1646: } else
1647: e = ROFF_IGN;
1.319 schwarze 1648: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1649: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1650: return e;
1.319 schwarze 1651: }
1.321 schwarze 1652: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1653: tbl_read(r->tbl, ln, buf->buf, ppos);
1654: roff_addtbl(r->man, r->tbl);
1.340 schwarze 1655: return e;
1.321 schwarze 1656: }
1.252 schwarze 1657: if ( ! ctl)
1.340 schwarze 1658: return roff_parsetext(r, buf, pos, offs) | e;
1.228 schwarze 1659:
1660: /* Skip empty request lines. */
1661:
1.238 schwarze 1662: if (buf->buf[pos] == '"') {
1.228 schwarze 1663: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1664: ln, pos, NULL);
1.277 schwarze 1665: return ROFF_IGN;
1.238 schwarze 1666: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1667: return ROFF_IGN;
1.67 kristaps 1668:
1.79 kristaps 1669: /*
1670: * If a scope is open, go to the child handler for that macro,
1671: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1672: * Don't do so if an equation is open.
1.79 kristaps 1673: */
1.78 kristaps 1674:
1.79 kristaps 1675: if (r->last) {
1676: t = r->last->tok;
1.277 schwarze 1677: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1678: }
1.78 kristaps 1679:
1.243 schwarze 1680: /* No scope is open. This is a new request or macro. */
1681:
1682: spos = pos;
1683: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1684:
1685: /* Tables ignore most macros. */
1686:
1.308 schwarze 1687: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1688: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.243 schwarze 1689: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1690: ln, pos, buf->buf + spos);
1.308 schwarze 1691: if (t != TOKEN_NONE)
1.277 schwarze 1692: return ROFF_IGN;
1.257 schwarze 1693: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1694: pos++;
1.291 schwarze 1695: while (buf->buf[pos] == ' ')
1.257 schwarze 1696: pos++;
1.321 schwarze 1697: tbl_read(r->tbl, ln, buf->buf, pos);
1698: roff_addtbl(r->man, r->tbl);
1699: return ROFF_IGN;
1.243 schwarze 1700: }
1701:
1.305 schwarze 1702: /* For now, let high level macros abort .ce mode. */
1703:
1704: if (ctl && roffce_node != NULL &&
1.324 schwarze 1705: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1706: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1707: r->man->last = roffce_node;
1708: r->man->next = ROFF_NEXT_SIBLING;
1709: roffce_lines = 0;
1710: roffce_node = NULL;
1711: }
1712:
1.79 kristaps 1713: /*
1.243 schwarze 1714: * This is neither a roff request nor a user-defined macro.
1715: * Let the standard macro set parsers handle it.
1.79 kristaps 1716: */
1.67 kristaps 1717:
1.294 schwarze 1718: if (t == TOKEN_NONE)
1.277 schwarze 1719: return ROFF_CONT;
1.243 schwarze 1720:
1721: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1722:
1.296 schwarze 1723: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1724: }
1725:
1.339 schwarze 1726: /*
1727: * Internal interface function to tell the roff parser that execution
1728: * of the current macro ended. This is required because macro
1729: * definitions usually do not end with a .return request.
1730: */
1731: void
1732: roff_userret(struct roff *r)
1733: {
1734: struct mctx *ctx;
1735: int i;
1736:
1737: assert(r->mstackpos >= 0);
1738: ctx = r->mstack + r->mstackpos;
1739: for (i = 0; i < ctx->argc; i++)
1740: free(ctx->argv[i]);
1741: ctx->argc = 0;
1742: r->mstackpos--;
1743: }
1744:
1.117 kristaps 1745: void
1.74 kristaps 1746: roff_endparse(struct roff *r)
1747: {
1.321 schwarze 1748: if (r->last != NULL)
1.221 schwarze 1749: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1750: r->last->line, r->last->col,
1.295 schwarze 1751: roff_name[r->last->tok]);
1.117 kristaps 1752:
1.321 schwarze 1753: if (r->eqn != NULL) {
1.221 schwarze 1754: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.319 schwarze 1755: r->eqn->node->line, r->eqn->node->pos, "EQ");
1756: eqn_parse(r->eqn);
1757: r->eqn = NULL;
1.125 kristaps 1758: }
1759:
1.321 schwarze 1760: if (r->tbl != NULL) {
1.221 schwarze 1761: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1762: r->tbl->line, r->tbl->pos, "TS");
1.321 schwarze 1763: tbl_end(r->tbl);
1764: r->tbl = NULL;
1.117 kristaps 1765: }
1.67 kristaps 1766: }
1767:
1768: /*
1769: * Parse a roff node's type from the input buffer. This must be in the
1770: * form of ".foo xxx" in the usual way.
1771: */
1.294 schwarze 1772: static enum roff_tok
1.214 schwarze 1773: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1774: {
1.214 schwarze 1775: char *cp;
1.106 kristaps 1776: const char *mac;
1777: size_t maclen;
1.315 schwarze 1778: int deftype;
1.294 schwarze 1779: enum roff_tok t;
1.67 kristaps 1780:
1.214 schwarze 1781: cp = buf + *pos;
1782:
1783: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1784: return TOKEN_NONE;
1.67 kristaps 1785:
1.214 schwarze 1786: mac = cp;
1787: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1788:
1.315 schwarze 1789: deftype = ROFFDEF_USER | ROFFDEF_REN;
1790: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1791: switch (deftype) {
1792: case ROFFDEF_USER:
1793: t = ROFF_USERDEF;
1794: break;
1795: case ROFFDEF_REN:
1796: t = ROFF_RENAMED;
1797: break;
1798: default:
1799: t = roffhash_find(r->reqtab, mac, maclen);
1800: break;
1801: }
1.294 schwarze 1802: if (t != TOKEN_NONE)
1.214 schwarze 1803: *pos = cp - buf;
1.325 schwarze 1804: else if (deftype == ROFFDEF_UNDEF) {
1805: /* Using an undefined macro defines it to be empty. */
1806: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1807: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1808: }
1.277 schwarze 1809: return t;
1.67 kristaps 1810: }
1811:
1.266 schwarze 1812: /* --- handling of request blocks ----------------------------------------- */
1813:
1.340 schwarze 1814: static int
1.76 kristaps 1815: roff_cblock(ROFF_ARGS)
1.67 kristaps 1816: {
1817:
1.79 kristaps 1818: /*
1819: * A block-close `..' should only be invoked as a child of an
1820: * ignore macro, otherwise raise a warning and just ignore it.
1821: */
1822:
1.238 schwarze 1823: if (r->last == NULL) {
1.221 schwarze 1824: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1825: ln, ppos, "..");
1.277 schwarze 1826: return ROFF_IGN;
1.76 kristaps 1827: }
1.67 kristaps 1828:
1.81 kristaps 1829: switch (r->last->tok) {
1.207 schwarze 1830: case ROFF_am:
1.220 schwarze 1831: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1832: case ROFF_ami:
1833: case ROFF_de:
1.108 schwarze 1834: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1835: case ROFF_dei:
1836: case ROFF_ig:
1.81 kristaps 1837: break;
1838: default:
1.221 schwarze 1839: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1840: ln, ppos, "..");
1.277 schwarze 1841: return ROFF_IGN;
1.76 kristaps 1842: }
1.67 kristaps 1843:
1.238 schwarze 1844: if (buf->buf[pos] != '\0')
1.217 schwarze 1845: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1846: ".. %s", buf->buf + pos);
1.71 kristaps 1847:
1848: roffnode_pop(r);
1.76 kristaps 1849: roffnode_cleanscope(r);
1.277 schwarze 1850: return ROFF_IGN;
1.71 kristaps 1851:
1.67 kristaps 1852: }
1853:
1.340 schwarze 1854: static int
1.76 kristaps 1855: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1856: {
1.340 schwarze 1857: int inloop;
1.67 kristaps 1858:
1.340 schwarze 1859: inloop = 0;
1860: while (r->last != NULL) {
1.173 schwarze 1861: if (--r->last->endspan != 0)
1.76 kristaps 1862: break;
1.340 schwarze 1863: inloop += roffnode_pop(r);
1.76 kristaps 1864: }
1.340 schwarze 1865: return inloop;
1.67 kristaps 1866: }
1867:
1.340 schwarze 1868: static int
1.195 schwarze 1869: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1870: {
1.76 kristaps 1871: if (NULL == r->last) {
1.221 schwarze 1872: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1873: ln, ppos, "\\}");
1.340 schwarze 1874: return 0;
1.76 kristaps 1875: }
1876:
1.82 kristaps 1877: switch (r->last->tok) {
1.207 schwarze 1878: case ROFF_el:
1879: case ROFF_ie:
1880: case ROFF_if:
1.340 schwarze 1881: case ROFF_while:
1.82 kristaps 1882: break;
1883: default:
1.221 schwarze 1884: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1885: ln, ppos, "\\}");
1.340 schwarze 1886: return 0;
1.75 kristaps 1887: }
1888:
1.76 kristaps 1889: if (r->last->endspan > -1) {
1.221 schwarze 1890: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1891: ln, ppos, "\\}");
1.340 schwarze 1892: return 0;
1.76 kristaps 1893: }
1894:
1.340 schwarze 1895: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 1896: }
1897:
1.340 schwarze 1898: static int
1.80 kristaps 1899: roff_block(ROFF_ARGS)
1.76 kristaps 1900: {
1.315 schwarze 1901: const char *name, *value;
1902: char *call, *cp, *iname, *rname;
1903: size_t csz, namesz, rsz;
1904: int deftype;
1.106 kristaps 1905:
1.220 schwarze 1906: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1907:
1.238 schwarze 1908: if (tok == ROFF_de1)
1.220 schwarze 1909: tok = ROFF_de;
1.251 schwarze 1910: else if (tok == ROFF_dei1)
1911: tok = ROFF_dei;
1.238 schwarze 1912: else if (tok == ROFF_am1)
1.220 schwarze 1913: tok = ROFF_am;
1.251 schwarze 1914: else if (tok == ROFF_ami1)
1915: tok = ROFF_ami;
1.220 schwarze 1916:
1917: /* Parse the macro name argument. */
1918:
1.238 schwarze 1919: cp = buf->buf + pos;
1920: if (tok == ROFF_ig) {
1.220 schwarze 1921: iname = NULL;
1922: namesz = 0;
1923: } else {
1924: iname = cp;
1925: namesz = roff_getname(r, &cp, ln, ppos);
1926: iname[namesz] = '\0';
1927: }
1.107 kristaps 1928:
1.220 schwarze 1929: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1930:
1.238 schwarze 1931: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1932: deftype = ROFFDEF_USER;
1933: name = roff_getstrn(r, iname, namesz, &deftype);
1934: if (name == NULL) {
1.220 schwarze 1935: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1936: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1937: "%.*s", (int)namesz, iname);
1938: namesz = 0;
1939: } else
1940: namesz = strlen(name);
1941: } else
1942: name = iname;
1.107 kristaps 1943:
1.238 schwarze 1944: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1945: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1946: ln, ppos, roff_name[tok]);
1.277 schwarze 1947: return ROFF_IGN;
1.220 schwarze 1948: }
1.80 kristaps 1949:
1.106 kristaps 1950: roffnode_push(r, tok, name, ln, ppos);
1951:
1952: /*
1953: * At the beginning of a `de' macro, clear the existing string
1954: * with the same name, if there is one. New content will be
1.193 schwarze 1955: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1956: */
1.107 kristaps 1957:
1.311 schwarze 1958: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 1959: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 1960: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 1961: } else if (tok == ROFF_am || tok == ROFF_ami) {
1962: deftype = ROFFDEF_ANY;
1963: value = roff_getstrn(r, iname, namesz, &deftype);
1964: switch (deftype) { /* Before appending, ... */
1965: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1966: roff_setstrn(&r->strtab, name, namesz,
1967: value, strlen(value), 0);
1968: break;
1969: case ROFFDEF_REN: /* call original standard macro. */
1970: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1971: (int)strlen(value), value);
1972: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1973: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1974: free(call);
1975: break;
1976: case ROFFDEF_STD: /* rename and call standard macro. */
1977: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1978: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1979: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1980: (int)rsz, rname);
1981: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1982: free(call);
1983: free(rname);
1984: break;
1985: default:
1986: break;
1987: }
1.311 schwarze 1988: }
1.76 kristaps 1989:
1.238 schwarze 1990: if (*cp == '\0')
1.277 schwarze 1991: return ROFF_IGN;
1.78 kristaps 1992:
1.220 schwarze 1993: /* Get the custom end marker. */
1.107 kristaps 1994:
1.220 schwarze 1995: iname = cp;
1.213 schwarze 1996: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1997:
1998: /* Resolve the end marker if it is indirect. */
1999:
1.238 schwarze 2000: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2001: deftype = ROFFDEF_USER;
2002: name = roff_getstrn(r, iname, namesz, &deftype);
2003: if (name == NULL) {
1.220 schwarze 2004: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 2005: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 2006: "%.*s", (int)namesz, iname);
2007: namesz = 0;
2008: } else
2009: namesz = strlen(name);
2010: } else
2011: name = iname;
2012:
1.213 schwarze 2013: if (namesz)
2014: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2015:
1.238 schwarze 2016: if (*cp != '\0')
1.217 schwarze 2017: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 2018: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2019:
1.277 schwarze 2020: return ROFF_IGN;
1.78 kristaps 2021: }
2022:
1.340 schwarze 2023: static int
1.80 kristaps 2024: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2025: {
1.294 schwarze 2026: enum roff_tok t;
1.79 kristaps 2027: int i, j;
2028:
2029: /*
2030: * First check whether a custom macro exists at this level. If
2031: * it does, then check against it. This is some of groff's
2032: * stranger behaviours. If we encountered a custom end-scope
2033: * tag and that tag also happens to be a "real" macro, then we
2034: * need to try interpreting it again as a real macro. If it's
2035: * not, then return ignore. Else continue.
2036: */
2037:
2038: if (r->last->end) {
1.130 kristaps 2039: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2040: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2041: break;
2042:
1.238 schwarze 2043: if (r->last->end[j] == '\0' &&
2044: (buf->buf[i] == '\0' ||
2045: buf->buf[i] == ' ' ||
2046: buf->buf[i] == '\t')) {
1.79 kristaps 2047: roffnode_pop(r);
2048: roffnode_cleanscope(r);
2049:
1.238 schwarze 2050: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2051: i++;
2052:
2053: pos = i;
1.238 schwarze 2054: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2055: TOKEN_NONE)
1.277 schwarze 2056: return ROFF_RERUN;
2057: return ROFF_IGN;
1.79 kristaps 2058: }
2059: }
2060:
2061: /*
2062: * If we have no custom end-query or lookup failed, then try
2063: * pulling it out of the hashtable.
2064: */
2065:
1.238 schwarze 2066: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 2067:
1.238 schwarze 2068: if (t != ROFF_cblock) {
2069: if (tok != ROFF_ig)
2070: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 2071: return ROFF_IGN;
1.106 kristaps 2072: }
1.79 kristaps 2073:
1.277 schwarze 2074: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2075: }
2076:
1.340 schwarze 2077: static int
1.80 kristaps 2078: roff_block_text(ROFF_ARGS)
1.78 kristaps 2079: {
2080:
1.238 schwarze 2081: if (tok != ROFF_ig)
2082: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2083:
1.277 schwarze 2084: return ROFF_IGN;
1.78 kristaps 2085: }
2086:
1.340 schwarze 2087: static int
1.82 kristaps 2088: roff_cond_sub(ROFF_ARGS)
2089: {
1.340 schwarze 2090: char *ep;
2091: int endloop, irc, rr;
1.294 schwarze 2092: enum roff_tok t;
1.82 kristaps 2093:
1.340 schwarze 2094: irc = ROFF_IGN;
1.82 kristaps 2095: rr = r->last->rule;
1.340 schwarze 2096: endloop = tok != ROFF_while ? ROFF_IGN :
2097: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2098: if (roffnode_cleanscope(r))
2099: irc |= endloop;
1.144 kristaps 2100:
1.196 schwarze 2101: /*
2102: * If `\}' occurs on a macro line without a preceding macro,
2103: * drop the line completely.
2104: */
2105:
1.238 schwarze 2106: ep = buf->buf + pos;
2107: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 2108: rr = 0;
1.196 schwarze 2109:
1.343 ! schwarze 2110: /*
! 2111: * The closing delimiter `\}' rewinds the conditional scope
! 2112: * but is otherwise ignored when interpreting the line.
! 2113: */
1.144 kristaps 2114:
1.238 schwarze 2115: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2116: switch (ep[1]) {
2117: case '}':
2118: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2119: if (roff_ccond(r, ln, ep - buf->buf))
2120: irc |= endloop;
1.318 schwarze 2121: break;
2122: case '\0':
2123: ++ep;
2124: break;
2125: default:
2126: ep += 2;
2127: break;
1.197 schwarze 2128: }
1.177 schwarze 2129: }
1.318 schwarze 2130:
2131: /*
2132: * Fully handle known macros when they are structurally
2133: * required or when the conditional evaluated to true.
2134: */
2135:
2136: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.340 schwarze 2137: irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
2138: (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
2139: rr ? ROFF_CONT : ROFF_IGN;
2140: return irc;
1.82 kristaps 2141: }
2142:
1.340 schwarze 2143: static int
1.82 kristaps 2144: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2145: {
1.140 kristaps 2146: char *ep;
1.340 schwarze 2147: int endloop, irc, rr;
1.82 kristaps 2148:
1.340 schwarze 2149: irc = ROFF_IGN;
1.82 kristaps 2150: rr = r->last->rule;
1.340 schwarze 2151: endloop = tok != ROFF_while ? ROFF_IGN :
2152: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2153: if (roffnode_cleanscope(r))
2154: irc |= endloop;
1.82 kristaps 2155:
1.343 ! schwarze 2156: /*
! 2157: * If `\}' occurs on a text line with neither preceding
! 2158: * nor following characters, drop the line completely.
! 2159: */
! 2160:
1.238 schwarze 2161: ep = buf->buf + pos;
1.343 ! schwarze 2162: if (strcmp(ep, "\\}") == 0)
! 2163: rr = 0;
! 2164:
! 2165: /*
! 2166: * The closing delimiter `\}' rewinds the conditional scope
! 2167: * but is otherwise ignored when interpreting the line.
! 2168: */
! 2169:
1.238 schwarze 2170: while ((ep = strchr(ep, '\\')) != NULL) {
1.343 ! schwarze 2171: switch (ep[1]) {
! 2172: case '}':
! 2173: memmove(ep, ep + 2, strlen(ep + 2) + 1);
! 2174: if (roff_ccond(r, ln, ep - buf->buf))
1.340 schwarze 2175: irc |= endloop;
1.343 ! schwarze 2176: break;
! 2177: case '\0':
! 2178: ++ep;
! 2179: break;
! 2180: default:
! 2181: ep += 2;
! 2182: break;
1.197 schwarze 2183: }
1.78 kristaps 2184: }
1.340 schwarze 2185: if (rr)
2186: irc |= ROFF_CONT;
2187: return irc;
1.74 kristaps 2188: }
2189:
1.266 schwarze 2190: /* --- handling of numeric and conditional expressions -------------------- */
2191:
1.204 schwarze 2192: /*
2193: * Parse a single signed integer number. Stop at the first non-digit.
2194: * If there is at least one digit, return success and advance the
2195: * parse point, else return failure and let the parse point unchanged.
2196: * Ignore overflows, treat them just like the C language.
2197: */
1.184 schwarze 2198: static int
1.261 schwarze 2199: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2200: {
1.261 schwarze 2201: int myres, scaled, n, p;
1.206 schwarze 2202:
2203: if (NULL == res)
2204: res = &myres;
1.184 schwarze 2205:
2206: p = *pos;
2207: n = v[p] == '-';
1.261 schwarze 2208: if (n || v[p] == '+')
1.184 schwarze 2209: p++;
2210:
1.261 schwarze 2211: if (flags & ROFFNUM_WHITE)
2212: while (isspace((unsigned char)v[p]))
2213: p++;
2214:
1.184 schwarze 2215: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2216: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2217: if (p == *pos + n)
2218: return 0;
2219:
2220: if (n)
2221: *res = -*res;
2222:
1.254 schwarze 2223: /* Each number may be followed by one optional scaling unit. */
2224:
2225: switch (v[p]) {
2226: case 'f':
1.261 schwarze 2227: scaled = *res * 65536;
1.254 schwarze 2228: break;
2229: case 'i':
1.261 schwarze 2230: scaled = *res * 240;
1.254 schwarze 2231: break;
2232: case 'c':
1.261 schwarze 2233: scaled = *res * 240 / 2.54;
1.254 schwarze 2234: break;
2235: case 'v':
2236: case 'P':
1.261 schwarze 2237: scaled = *res * 40;
1.254 schwarze 2238: break;
2239: case 'm':
2240: case 'n':
1.261 schwarze 2241: scaled = *res * 24;
1.254 schwarze 2242: break;
2243: case 'p':
1.261 schwarze 2244: scaled = *res * 10 / 3;
1.254 schwarze 2245: break;
2246: case 'u':
1.261 schwarze 2247: scaled = *res;
1.254 schwarze 2248: break;
2249: case 'M':
1.261 schwarze 2250: scaled = *res * 6 / 25;
1.254 schwarze 2251: break;
2252: default:
1.261 schwarze 2253: scaled = *res;
1.254 schwarze 2254: p--;
2255: break;
2256: }
1.261 schwarze 2257: if (flags & ROFFNUM_SCALE)
2258: *res = scaled;
1.254 schwarze 2259:
2260: *pos = p + 1;
1.277 schwarze 2261: return 1;
1.184 schwarze 2262: }
2263:
1.198 schwarze 2264: /*
2265: * Evaluate a string comparison condition.
2266: * The first character is the delimiter.
2267: * Succeed if the string up to its second occurrence
2268: * matches the string up to its third occurence.
2269: * Advance the cursor after the third occurrence
2270: * or lacking that, to the end of the line.
2271: */
2272: static int
2273: roff_evalstrcond(const char *v, int *pos)
2274: {
2275: const char *s1, *s2, *s3;
2276: int match;
2277:
2278: match = 0;
2279: s1 = v + *pos; /* initial delimiter */
2280: s2 = s1 + 1; /* for scanning the first string */
2281: s3 = strchr(s2, *s1); /* for scanning the second string */
2282:
2283: if (NULL == s3) /* found no middle delimiter */
2284: goto out;
2285:
2286: while ('\0' != *++s3) {
2287: if (*s2 != *s3) { /* mismatch */
2288: s3 = strchr(s3, *s1);
2289: break;
2290: }
2291: if (*s3 == *s1) { /* found the final delimiter */
2292: match = 1;
2293: break;
2294: }
2295: s2++;
2296: }
2297:
2298: out:
2299: if (NULL == s3)
2300: s3 = strchr(s2, '\0');
1.242 schwarze 2301: else if (*s3 != '\0')
1.198 schwarze 2302: s3++;
2303: *pos = s3 - v;
1.277 schwarze 2304: return match;
1.198 schwarze 2305: }
2306:
1.204 schwarze 2307: /*
2308: * Evaluate an optionally negated single character, numerical,
2309: * or string condition.
2310: */
1.198 schwarze 2311: static int
1.271 schwarze 2312: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2313: {
1.336 schwarze 2314: const char *start, *end;
2315: char *cp, *name;
2316: size_t sz;
2317: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2318:
1.198 schwarze 2319: if ('!' == v[*pos]) {
2320: wanttrue = 0;
2321: (*pos)++;
2322: } else
2323: wanttrue = 1;
2324:
1.88 kristaps 2325: switch (v[*pos]) {
1.240 schwarze 2326: case '\0':
1.277 schwarze 2327: return 0;
1.207 schwarze 2328: case 'n':
2329: case 'o':
1.88 kristaps 2330: (*pos)++;
1.277 schwarze 2331: return wanttrue;
1.207 schwarze 2332: case 'e':
2333: case 't':
1.239 schwarze 2334: case 'v':
1.88 kristaps 2335: (*pos)++;
1.277 schwarze 2336: return !wanttrue;
1.336 schwarze 2337: case 'c':
2338: do {
2339: (*pos)++;
2340: } while (v[*pos] == ' ');
2341:
2342: /*
2343: * Quirk for groff compatibility:
2344: * The horizontal tab is neither available nor unavailable.
2345: */
2346:
2347: if (v[*pos] == '\t') {
2348: (*pos)++;
2349: return 0;
2350: }
2351:
2352: /* Printable ASCII characters are available. */
2353:
2354: if (v[*pos] != '\\') {
2355: (*pos)++;
2356: return wanttrue;
2357: }
2358:
2359: end = v + ++*pos;
2360: switch (mandoc_escape(&end, &start, &len)) {
2361: case ESCAPE_SPECIAL:
2362: istrue = mchars_spec2cp(start, len) != -1;
2363: break;
2364: case ESCAPE_UNICODE:
2365: istrue = 1;
2366: break;
2367: case ESCAPE_NUMBERED:
2368: istrue = mchars_num2char(start, len) != -1;
2369: break;
2370: default:
2371: istrue = !wanttrue;
2372: break;
2373: }
2374: *pos = end - v;
2375: return istrue == wanttrue;
1.310 schwarze 2376: case 'd':
1.271 schwarze 2377: case 'r':
1.310 schwarze 2378: cp = v + *pos + 1;
2379: while (*cp == ' ')
2380: cp++;
2381: name = cp;
2382: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2383: if (sz == 0)
2384: istrue = 0;
2385: else if (v[*pos] == 'r')
2386: istrue = roff_hasregn(r, name, sz);
2387: else {
2388: deftype = ROFFDEF_ANY;
2389: roff_getstrn(r, name, sz, &deftype);
2390: istrue = !!deftype;
2391: }
1.271 schwarze 2392: *pos = cp - v;
1.310 schwarze 2393: return istrue == wanttrue;
1.88 kristaps 2394: default:
2395: break;
2396: }
2397:
1.241 schwarze 2398: savepos = *pos;
1.261 schwarze 2399: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2400: return (number > 0) == wanttrue;
1.241 schwarze 2401: else if (*pos == savepos)
1.277 schwarze 2402: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2403: else
1.277 schwarze 2404: return 0;
1.88 kristaps 2405: }
2406:
1.340 schwarze 2407: static int
1.103 kristaps 2408: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2409: {
1.123 schwarze 2410:
1.277 schwarze 2411: return ROFF_IGN;
1.89 kristaps 2412: }
2413:
1.340 schwarze 2414: static int
1.251 schwarze 2415: roff_insec(ROFF_ARGS)
2416: {
2417:
2418: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2419: ln, ppos, roff_name[tok]);
1.277 schwarze 2420: return ROFF_IGN;
1.251 schwarze 2421: }
2422:
1.340 schwarze 2423: static int
1.251 schwarze 2424: roff_unsupp(ROFF_ARGS)
2425: {
2426:
2427: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2428: ln, ppos, roff_name[tok]);
1.277 schwarze 2429: return ROFF_IGN;
1.251 schwarze 2430: }
2431:
1.340 schwarze 2432: static int
1.82 kristaps 2433: roff_cond(ROFF_ARGS)
1.74 kristaps 2434: {
1.340 schwarze 2435: int irc;
1.173 schwarze 2436:
2437: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2438:
1.207 schwarze 2439: /*
1.134 kristaps 2440: * An `.el' has no conditional body: it will consume the value
2441: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2442: * defaults to DENY.
1.134 kristaps 2443: *
2444: * If we're not an `el', however, then evaluate the conditional.
2445: */
1.133 kristaps 2446:
1.238 schwarze 2447: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2448: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2449: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2450:
1.134 kristaps 2451: /*
2452: * An if-else will put the NEGATION of the current evaluated
2453: * conditional into the stack of rules.
2454: */
2455:
1.238 schwarze 2456: if (tok == ROFF_ie) {
1.223 schwarze 2457: if (r->rstackpos + 1 == r->rstacksz) {
2458: r->rstacksz += 16;
2459: r->rstack = mandoc_reallocarray(r->rstack,
2460: r->rstacksz, sizeof(int));
1.134 kristaps 2461: }
1.198 schwarze 2462: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2463: }
1.88 kristaps 2464:
2465: /* If the parent has false as its rule, then so do we. */
2466:
1.198 schwarze 2467: if (r->last->parent && !r->last->parent->rule)
2468: r->last->rule = 0;
1.88 kristaps 2469:
2470: /*
1.173 schwarze 2471: * Determine scope.
2472: * If there is nothing on the line after the conditional,
2473: * not even whitespace, use next-line scope.
1.340 schwarze 2474: * Except that .while does not support next-line scope.
1.88 kristaps 2475: */
1.74 kristaps 2476:
1.340 schwarze 2477: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2478: r->last->endspan = 2;
2479: goto out;
2480: }
2481:
1.238 schwarze 2482: while (buf->buf[pos] == ' ')
1.173 schwarze 2483: pos++;
2484:
2485: /* An opening brace requests multiline scope. */
1.75 kristaps 2486:
1.238 schwarze 2487: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2488: r->last->endspan = -1;
2489: pos += 2;
1.272 schwarze 2490: while (buf->buf[pos] == ' ')
2491: pos++;
1.173 schwarze 2492: goto out;
1.207 schwarze 2493: }
1.74 kristaps 2494:
1.77 kristaps 2495: /*
1.173 schwarze 2496: * Anything else following the conditional causes
2497: * single-line scope. Warn if the scope contains
2498: * nothing but trailing whitespace.
1.77 kristaps 2499: */
2500:
1.238 schwarze 2501: if (buf->buf[pos] == '\0')
1.216 schwarze 2502: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2503: ln, ppos, roff_name[tok]);
1.77 kristaps 2504:
1.173 schwarze 2505: r->last->endspan = 1;
1.74 kristaps 2506:
1.173 schwarze 2507: out:
1.75 kristaps 2508: *offs = pos;
1.340 schwarze 2509: irc = ROFF_RERUN;
2510: if (tok == ROFF_while)
2511: irc |= ROFF_WHILE;
2512: return irc;
1.83 schwarze 2513: }
2514:
1.340 schwarze 2515: static int
1.92 schwarze 2516: roff_ds(ROFF_ARGS)
2517: {
1.212 schwarze 2518: char *string;
2519: const char *name;
2520: size_t namesz;
1.96 kristaps 2521:
1.251 schwarze 2522: /* Ignore groff compatibility mode for now. */
2523:
2524: if (tok == ROFF_ds1)
2525: tok = ROFF_ds;
2526: else if (tok == ROFF_as1)
2527: tok = ROFF_as;
2528:
1.96 kristaps 2529: /*
1.212 schwarze 2530: * The first word is the name of the string.
2531: * If it is empty or terminated by an escape sequence,
2532: * abort the `ds' request without defining anything.
1.96 kristaps 2533: */
1.92 schwarze 2534:
1.238 schwarze 2535: name = string = buf->buf + pos;
2536: if (*name == '\0')
1.277 schwarze 2537: return ROFF_IGN;
1.92 schwarze 2538:
1.212 schwarze 2539: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2540: if (name[namesz] == '\\')
1.277 schwarze 2541: return ROFF_IGN;
1.212 schwarze 2542:
2543: /* Read past the initial double-quote, if any. */
1.238 schwarze 2544: if (*string == '"')
1.92 schwarze 2545: string++;
2546:
1.96 kristaps 2547: /* The rest is the value. */
1.212 schwarze 2548: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2549: ROFF_as == tok);
1.311 schwarze 2550: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2551: return ROFF_IGN;
1.92 schwarze 2552: }
2553:
1.204 schwarze 2554: /*
2555: * Parse a single operator, one or two characters long.
2556: * If the operator is recognized, return success and advance the
2557: * parse point, else return failure and let the parse point unchanged.
2558: */
2559: static int
2560: roff_getop(const char *v, int *pos, char *res)
2561: {
2562:
2563: *res = v[*pos];
2564:
2565: switch (*res) {
1.207 schwarze 2566: case '+':
2567: case '-':
2568: case '*':
2569: case '/':
2570: case '%':
2571: case '&':
2572: case ':':
1.204 schwarze 2573: break;
2574: case '<':
2575: switch (v[*pos + 1]) {
1.207 schwarze 2576: case '=':
1.204 schwarze 2577: *res = 'l';
2578: (*pos)++;
2579: break;
1.207 schwarze 2580: case '>':
1.204 schwarze 2581: *res = '!';
2582: (*pos)++;
2583: break;
1.207 schwarze 2584: case '?':
1.204 schwarze 2585: *res = 'i';
2586: (*pos)++;
2587: break;
2588: default:
2589: break;
2590: }
2591: break;
2592: case '>':
2593: switch (v[*pos + 1]) {
1.207 schwarze 2594: case '=':
1.204 schwarze 2595: *res = 'g';
2596: (*pos)++;
2597: break;
1.207 schwarze 2598: case '?':
1.204 schwarze 2599: *res = 'a';
2600: (*pos)++;
2601: break;
2602: default:
2603: break;
2604: }
2605: break;
2606: case '=':
2607: if ('=' == v[*pos + 1])
2608: (*pos)++;
2609: break;
2610: default:
1.277 schwarze 2611: return 0;
1.204 schwarze 2612: }
2613: (*pos)++;
2614:
1.277 schwarze 2615: return *res;
1.204 schwarze 2616: }
2617:
2618: /*
2619: * Evaluate either a parenthesized numeric expression
2620: * or a single signed integer number.
2621: */
2622: static int
1.235 schwarze 2623: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2624: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2625: {
2626:
2627: if ('(' != v[*pos])
1.277 schwarze 2628: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2629:
2630: (*pos)++;
1.261 schwarze 2631: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2632: return 0;
1.204 schwarze 2633:
1.206 schwarze 2634: /*
2635: * Omission of the closing parenthesis
2636: * is an error in validation mode,
2637: * but ignored in evaluation mode.
2638: */
2639:
1.204 schwarze 2640: if (')' == v[*pos])
2641: (*pos)++;
1.206 schwarze 2642: else if (NULL == res)
1.277 schwarze 2643: return 0;
1.204 schwarze 2644:
1.277 schwarze 2645: return 1;
1.204 schwarze 2646: }
2647:
2648: /*
2649: * Evaluate a complete numeric expression.
2650: * Proceed left to right, there is no concept of precedence.
2651: */
2652: static int
1.235 schwarze 2653: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2654: int *pos, int *res, int flags)
1.204 schwarze 2655: {
2656: int mypos, operand2;
2657: char operator;
2658:
2659: if (NULL == pos) {
2660: mypos = 0;
2661: pos = &mypos;
2662: }
2663:
1.261 schwarze 2664: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2665: while (isspace((unsigned char)v[*pos]))
2666: (*pos)++;
2667:
1.261 schwarze 2668: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2669: return 0;
1.204 schwarze 2670:
2671: while (1) {
1.261 schwarze 2672: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2673: while (isspace((unsigned char)v[*pos]))
2674: (*pos)++;
2675:
2676: if ( ! roff_getop(v, pos, &operator))
2677: break;
2678:
1.261 schwarze 2679: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2680: while (isspace((unsigned char)v[*pos]))
2681: (*pos)++;
2682:
1.261 schwarze 2683: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2684: return 0;
1.204 schwarze 2685:
1.261 schwarze 2686: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2687: while (isspace((unsigned char)v[*pos]))
2688: (*pos)++;
1.206 schwarze 2689:
2690: if (NULL == res)
2691: continue;
1.204 schwarze 2692:
2693: switch (operator) {
1.207 schwarze 2694: case '+':
1.204 schwarze 2695: *res += operand2;
2696: break;
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 '/':
1.244 schwarze 2704: if (operand2 == 0) {
1.235 schwarze 2705: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2706: r->parse, ln, *pos, v);
2707: *res = 0;
2708: break;
2709: }
1.204 schwarze 2710: *res /= operand2;
2711: break;
1.207 schwarze 2712: case '%':
1.244 schwarze 2713: if (operand2 == 0) {
2714: mandoc_msg(MANDOCERR_DIVZERO,
2715: r->parse, ln, *pos, v);
2716: *res = 0;
2717: break;
2718: }
1.204 schwarze 2719: *res %= operand2;
2720: break;
1.207 schwarze 2721: case '<':
1.204 schwarze 2722: *res = *res < operand2;
2723: break;
1.207 schwarze 2724: case '>':
1.204 schwarze 2725: *res = *res > operand2;
2726: break;
1.207 schwarze 2727: case 'l':
1.204 schwarze 2728: *res = *res <= operand2;
2729: break;
1.207 schwarze 2730: case 'g':
1.204 schwarze 2731: *res = *res >= operand2;
2732: break;
1.207 schwarze 2733: case '=':
1.204 schwarze 2734: *res = *res == operand2;
2735: break;
1.207 schwarze 2736: case '!':
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 'i':
1.204 schwarze 2746: if (operand2 < *res)
2747: *res = operand2;
2748: break;
1.207 schwarze 2749: case 'a':
1.204 schwarze 2750: if (operand2 > *res)
2751: *res = operand2;
2752: break;
2753: default:
2754: abort();
2755: }
2756: }
1.277 schwarze 2757: return 1;
1.204 schwarze 2758: }
2759:
1.266 schwarze 2760: /* --- register management ------------------------------------------------ */
2761:
1.180 schwarze 2762: void
1.187 schwarze 2763: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2764: {
1.327 schwarze 2765: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2766: }
2767:
2768: static void
2769: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2770: int val, char sign, int step)
1.326 schwarze 2771: {
1.180 schwarze 2772: struct roffreg *reg;
2773:
2774: /* Search for an existing register with the same name. */
2775: reg = r->regtab;
2776:
1.326 schwarze 2777: while (reg != NULL && (reg->key.sz != len ||
2778: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 2779: reg = reg->next;
1.147 kristaps 2780:
1.180 schwarze 2781: if (NULL == reg) {
2782: /* Create a new register. */
2783: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 2784: reg->key.p = mandoc_strndup(name, len);
2785: reg->key.sz = len;
1.187 schwarze 2786: reg->val = 0;
1.327 schwarze 2787: reg->step = 0;
1.180 schwarze 2788: reg->next = r->regtab;
2789: r->regtab = reg;
2790: }
2791:
1.187 schwarze 2792: if ('+' == sign)
2793: reg->val += val;
2794: else if ('-' == sign)
2795: reg->val -= val;
2796: else
2797: reg->val = val;
1.327 schwarze 2798: if (step != INT_MIN)
2799: reg->step = step;
1.147 kristaps 2800: }
2801:
1.192 schwarze 2802: /*
2803: * Handle some predefined read-only number registers.
2804: * For now, return -1 if the requested register is not predefined;
2805: * in case a predefined read-only register having the value -1
2806: * were to turn up, another special value would have to be chosen.
2807: */
2808: static int
1.273 schwarze 2809: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2810: {
2811:
2812: switch (*name) {
1.273 schwarze 2813: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 2814: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 2815: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2816: return 0;
1.207 schwarze 2817: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2818: return 1;
1.207 schwarze 2819: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2820: return 24;
1.207 schwarze 2821: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2822: return 0;
1.207 schwarze 2823: case 'T': /* Some output device is always defined. */
1.277 schwarze 2824: return 1;
1.207 schwarze 2825: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2826: return 40;
1.192 schwarze 2827: default:
1.277 schwarze 2828: return -1;
1.192 schwarze 2829: }
2830: }
2831:
1.181 schwarze 2832: int
1.326 schwarze 2833: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 2834: {
1.327 schwarze 2835: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 2836: }
2837:
2838: static int
1.327 schwarze 2839: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 2840: {
2841: struct roffreg *reg;
1.192 schwarze 2842: int val;
2843:
2844: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2845: val = roff_getregro(r, name + 1);
1.192 schwarze 2846: if (-1 != val)
1.277 schwarze 2847: return val;
1.192 schwarze 2848: }
1.181 schwarze 2849:
1.327 schwarze 2850: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 2851: if (len == reg->key.sz &&
1.327 schwarze 2852: 0 == strncmp(name, reg->key.p, len)) {
2853: switch (sign) {
2854: case '+':
2855: reg->val += reg->step;
2856: break;
2857: case '-':
2858: reg->val -= reg->step;
2859: break;
2860: default:
2861: break;
2862: }
1.277 schwarze 2863: return reg->val;
1.327 schwarze 2864: }
2865: }
1.271 schwarze 2866:
1.327 schwarze 2867: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 2868: return 0;
1.271 schwarze 2869: }
2870:
2871: static int
2872: roff_hasregn(const struct roff *r, const char *name, size_t len)
2873: {
2874: struct roffreg *reg;
2875: int val;
2876:
2877: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2878: val = roff_getregro(r, name + 1);
1.271 schwarze 2879: if (-1 != val)
1.277 schwarze 2880: return 1;
1.271 schwarze 2881: }
2882:
2883: for (reg = r->regtab; reg; reg = reg->next)
2884: if (len == reg->key.sz &&
2885: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2886: return 1;
1.147 kristaps 2887:
1.277 schwarze 2888: return 0;
1.147 kristaps 2889: }
2890:
1.180 schwarze 2891: static void
2892: roff_freereg(struct roffreg *reg)
1.147 kristaps 2893: {
1.180 schwarze 2894: struct roffreg *old_reg;
1.147 kristaps 2895:
1.180 schwarze 2896: while (NULL != reg) {
2897: free(reg->key.p);
2898: old_reg = reg;
2899: reg = reg->next;
2900: free(old_reg);
2901: }
1.147 kristaps 2902: }
1.92 schwarze 2903:
1.340 schwarze 2904: static int
1.89 kristaps 2905: roff_nr(ROFF_ARGS)
1.83 schwarze 2906: {
1.327 schwarze 2907: char *key, *val, *step;
1.212 schwarze 2908: size_t keysz;
1.327 schwarze 2909: int iv, is, len;
1.187 schwarze 2910: char sign;
1.89 kristaps 2911:
1.238 schwarze 2912: key = val = buf->buf + pos;
2913: if (*key == '\0')
1.277 schwarze 2914: return ROFF_IGN;
1.212 schwarze 2915:
2916: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2917: if (key[keysz] == '\\')
1.277 schwarze 2918: return ROFF_IGN;
1.89 kristaps 2919:
1.187 schwarze 2920: sign = *val;
1.238 schwarze 2921: if (sign == '+' || sign == '-')
1.187 schwarze 2922: val++;
2923:
1.327 schwarze 2924: len = 0;
2925: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2926: return ROFF_IGN;
2927:
2928: step = val + len;
2929: while (isspace((unsigned char)*step))
2930: step++;
2931: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2932: is = INT_MIN;
1.109 kristaps 2933:
1.327 schwarze 2934: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 2935: return ROFF_IGN;
1.203 schwarze 2936: }
2937:
1.340 schwarze 2938: static int
1.203 schwarze 2939: roff_rr(ROFF_ARGS)
2940: {
2941: struct roffreg *reg, **prev;
1.212 schwarze 2942: char *name, *cp;
2943: size_t namesz;
1.203 schwarze 2944:
1.238 schwarze 2945: name = cp = buf->buf + pos;
2946: if (*name == '\0')
1.277 schwarze 2947: return ROFF_IGN;
1.212 schwarze 2948: namesz = roff_getname(r, &cp, ln, pos);
2949: name[namesz] = '\0';
1.203 schwarze 2950:
2951: prev = &r->regtab;
2952: while (1) {
2953: reg = *prev;
1.238 schwarze 2954: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2955: break;
2956: prev = ®->next;
2957: }
1.238 schwarze 2958: if (reg != NULL) {
1.203 schwarze 2959: *prev = reg->next;
2960: free(reg->key.p);
2961: free(reg);
2962: }
1.277 schwarze 2963: return ROFF_IGN;
1.122 schwarze 2964: }
2965:
1.266 schwarze 2966: /* --- handler functions for roff requests -------------------------------- */
2967:
1.340 schwarze 2968: static int
1.122 schwarze 2969: roff_rm(ROFF_ARGS)
2970: {
2971: const char *name;
2972: char *cp;
1.212 schwarze 2973: size_t namesz;
1.122 schwarze 2974:
1.238 schwarze 2975: cp = buf->buf + pos;
2976: while (*cp != '\0') {
1.212 schwarze 2977: name = cp;
1.238 schwarze 2978: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2979: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 2980: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 2981: if (name[namesz] == '\\')
1.212 schwarze 2982: break;
1.122 schwarze 2983: }
1.277 schwarze 2984: return ROFF_IGN;
1.178 schwarze 2985: }
2986:
1.340 schwarze 2987: static int
1.178 schwarze 2988: roff_it(ROFF_ARGS)
2989: {
2990: int iv;
2991:
2992: /* Parse the number of lines. */
1.261 schwarze 2993:
2994: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2995: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2996: ln, ppos, buf->buf + 1);
1.277 schwarze 2997: return ROFF_IGN;
1.178 schwarze 2998: }
2999:
1.262 schwarze 3000: while (isspace((unsigned char)buf->buf[pos]))
3001: pos++;
3002:
3003: /*
3004: * Arm the input line trap.
3005: * Special-casing "an-trap" is an ugly workaround to cope
3006: * with DocBook stupidly fiddling with man(7) internals.
3007: */
1.261 schwarze 3008:
1.178 schwarze 3009: roffit_lines = iv;
1.262 schwarze 3010: roffit_macro = mandoc_strdup(iv != 1 ||
3011: strcmp(buf->buf + pos, "an-trap") ?
3012: buf->buf + pos : "br");
1.277 schwarze 3013: return ROFF_IGN;
1.175 schwarze 3014: }
3015:
1.340 schwarze 3016: static int
1.175 schwarze 3017: roff_Dd(ROFF_ARGS)
3018: {
1.315 schwarze 3019: int mask;
3020: enum roff_tok t, te;
1.227 schwarze 3021:
1.315 schwarze 3022: switch (tok) {
3023: case ROFF_Dd:
3024: tok = MDOC_Dd;
3025: te = MDOC_MAX;
3026: if (r->format == 0)
3027: r->format = MPARSE_MDOC;
3028: mask = MPARSE_MDOC | MPARSE_QUICK;
3029: break;
3030: case ROFF_TH:
3031: tok = MAN_TH;
3032: te = MAN_MAX;
3033: if (r->format == 0)
3034: r->format = MPARSE_MAN;
3035: mask = MPARSE_QUICK;
3036: break;
3037: default:
3038: abort();
3039: }
3040: if ((r->options & mask) == 0)
3041: for (t = tok; t < te; t++)
3042: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3043: return ROFF_CONT;
1.109 kristaps 3044: }
3045:
1.340 schwarze 3046: static int
1.109 kristaps 3047: roff_TE(ROFF_ARGS)
3048: {
1.321 schwarze 3049: if (r->tbl == NULL) {
1.221 schwarze 3050: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3051: ln, ppos, "TE");
1.321 schwarze 3052: return ROFF_IGN;
3053: }
3054: if (tbl_end(r->tbl) == 0) {
3055: r->tbl = NULL;
1.258 schwarze 3056: free(buf->buf);
3057: buf->buf = mandoc_strdup(".sp");
3058: buf->sz = 4;
1.329 schwarze 3059: *offs = 0;
1.277 schwarze 3060: return ROFF_REPARSE;
1.258 schwarze 3061: }
1.321 schwarze 3062: r->tbl = NULL;
1.277 schwarze 3063: return ROFF_IGN;
1.112 kristaps 3064: }
3065:
1.340 schwarze 3066: static int
1.112 kristaps 3067: roff_T_(ROFF_ARGS)
3068: {
3069:
3070: if (NULL == r->tbl)
1.221 schwarze 3071: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3072: ln, ppos, "T&");
1.112 kristaps 3073: else
1.296 schwarze 3074: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3075:
1.277 schwarze 3076: return ROFF_IGN;
1.109 kristaps 3077: }
3078:
1.230 schwarze 3079: /*
3080: * Handle in-line equation delimiters.
3081: */
1.340 schwarze 3082: static int
1.238 schwarze 3083: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3084: {
1.233 schwarze 3085: char *cp1, *cp2;
3086: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3087:
1.230 schwarze 3088: /*
3089: * Outside equations, look for an opening delimiter.
3090: * If we are inside an equation, we already know it is
3091: * in-line, or this function wouldn't have been called;
3092: * so look for a closing delimiter.
3093: */
3094:
1.238 schwarze 3095: cp1 = buf->buf + pos;
1.230 schwarze 3096: cp2 = strchr(cp1, r->eqn == NULL ?
3097: r->last_eqn->odelim : r->last_eqn->cdelim);
3098: if (cp2 == NULL)
1.277 schwarze 3099: return ROFF_CONT;
1.230 schwarze 3100:
1.233 schwarze 3101: *cp2++ = '\0';
3102: bef_pr = bef_nl = aft_nl = aft_pr = "";
3103:
3104: /* Handle preceding text, protecting whitespace. */
3105:
1.238 schwarze 3106: if (*buf->buf != '\0') {
1.233 schwarze 3107: if (r->eqn == NULL)
3108: bef_pr = "\\&";
3109: bef_nl = "\n";
3110: }
3111:
3112: /*
3113: * Prepare replacing the delimiter with an equation macro
3114: * and drop leading white space from the equation.
3115: */
1.230 schwarze 3116:
1.233 schwarze 3117: if (r->eqn == NULL) {
3118: while (*cp2 == ' ')
3119: cp2++;
3120: mac = ".EQ";
3121: } else
3122: mac = ".EN";
3123:
3124: /* Handle following text, protecting whitespace. */
3125:
3126: if (*cp2 != '\0') {
3127: aft_nl = "\n";
3128: if (r->eqn != NULL)
3129: aft_pr = "\\&";
3130: }
3131:
3132: /* Do the actual replacement. */
3133:
1.238 schwarze 3134: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3135: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3136: free(buf->buf);
3137: buf->buf = cp1;
1.230 schwarze 3138:
3139: /* Toggle the in-line state of the eqn subsystem. */
3140:
3141: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3142: return ROFF_REPARSE;
1.151 kristaps 3143: }
3144:
1.340 schwarze 3145: static int
1.235 schwarze 3146: roff_EQ(ROFF_ARGS)
1.125 kristaps 3147: {
1.319 schwarze 3148: struct roff_node *n;
3149:
1.322 schwarze 3150: if (r->man->macroset == MACROSET_MAN)
3151: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3152: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3153: if (ln > r->man->last->line)
3154: n->flags |= NODE_LINE;
3155: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
3156: n->eqn->expectargs = UINT_MAX;
3157: roff_node_append(r->man, n);
3158: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3159:
1.238 schwarze 3160: assert(r->eqn == NULL);
1.319 schwarze 3161: if (r->last_eqn == NULL)
3162: r->last_eqn = eqn_alloc(r->parse);
3163: else
3164: eqn_reset(r->last_eqn);
3165: r->eqn = r->last_eqn;
3166: r->eqn->node = n;
1.151 kristaps 3167:
1.238 schwarze 3168: if (buf->buf[pos] != '\0')
1.235 schwarze 3169: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 3170: ".EQ %s", buf->buf + pos);
1.151 kristaps 3171:
1.277 schwarze 3172: return ROFF_IGN;
1.125 kristaps 3173: }
3174:
1.340 schwarze 3175: static int
1.125 kristaps 3176: roff_EN(ROFF_ARGS)
3177: {
1.319 schwarze 3178: if (r->eqn != NULL) {
3179: eqn_parse(r->eqn);
3180: r->eqn = NULL;
3181: } else
3182: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
3183: if (buf->buf[pos] != '\0')
3184: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3185: "EN %s", buf->buf + pos);
1.277 schwarze 3186: return ROFF_IGN;
1.125 kristaps 3187: }
3188:
1.340 schwarze 3189: static int
1.109 kristaps 3190: roff_TS(ROFF_ARGS)
3191: {
1.321 schwarze 3192: if (r->tbl != NULL) {
1.221 schwarze 3193: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
3194: ln, ppos, "TS breaks TS");
1.321 schwarze 3195: tbl_end(r->tbl);
1.115 kristaps 3196: }
1.321 schwarze 3197: r->tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 3198: if (r->last_tbl)
1.321 schwarze 3199: r->last_tbl->next = r->tbl;
1.113 kristaps 3200: else
1.321 schwarze 3201: r->first_tbl = r->tbl;
3202: r->last_tbl = r->tbl;
1.297 schwarze 3203: return ROFF_IGN;
3204: }
3205:
1.340 schwarze 3206: static int
1.297 schwarze 3207: roff_onearg(ROFF_ARGS)
3208: {
3209: struct roff_node *n;
3210: char *cp;
1.305 schwarze 3211: int npos;
1.297 schwarze 3212:
1.302 schwarze 3213: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3214: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3215: tok == ROFF_ti))
1.302 schwarze 3216: man_breakscope(r->man, tok);
3217:
1.309 schwarze 3218: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3219: r->man->last = roffce_node;
3220: r->man->next = ROFF_NEXT_SIBLING;
3221: }
3222:
1.297 schwarze 3223: roff_elem_alloc(r->man, ln, ppos, tok);
3224: n = r->man->last;
3225:
3226: cp = buf->buf + pos;
3227: if (*cp != '\0') {
3228: while (*cp != '\0' && *cp != ' ')
3229: cp++;
3230: while (*cp == ' ')
3231: *cp++ = '\0';
3232: if (*cp != '\0')
3233: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
3234: r->parse, ln, cp - buf->buf,
3235: "%s ... %s", roff_name[tok], cp);
3236: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3237: }
3238:
1.309 schwarze 3239: if (tok == ROFF_ce || tok == ROFF_rj) {
3240: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3241: roff_word_alloc(r->man, ln, pos, "1");
3242: r->man->last->flags |= NODE_NOSRC;
3243: }
3244: npos = 0;
3245: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3246: &roffce_lines, 0) == 0) {
3247: mandoc_vmsg(MANDOCERR_CE_NONUM,
3248: r->parse, ln, pos, "ce %s", buf->buf + pos);
3249: roffce_lines = 1;
3250: }
3251: if (roffce_lines < 1) {
3252: r->man->last = r->man->last->parent;
3253: roffce_node = NULL;
3254: roffce_lines = 0;
3255: } else
3256: roffce_node = r->man->last->parent;
3257: } else {
3258: n->flags |= NODE_VALID | NODE_ENDED;
3259: r->man->last = n;
3260: }
3261: n->flags |= NODE_LINE;
1.300 schwarze 3262: r->man->next = ROFF_NEXT_SIBLING;
3263: return ROFF_IGN;
3264: }
3265:
1.340 schwarze 3266: static int
1.300 schwarze 3267: roff_manyarg(ROFF_ARGS)
3268: {
3269: struct roff_node *n;
3270: char *sp, *ep;
3271:
3272: roff_elem_alloc(r->man, ln, ppos, tok);
3273: n = r->man->last;
3274:
3275: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3276: while (*ep != '\0' && *ep != ' ')
3277: ep++;
3278: while (*ep == ' ')
3279: *ep++ = '\0';
3280: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3281: }
3282:
3283: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3284: r->man->last = n;
3285: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3286: return ROFF_IGN;
1.251 schwarze 3287: }
3288:
1.340 schwarze 3289: static int
1.311 schwarze 3290: roff_als(ROFF_ARGS)
3291: {
3292: char *oldn, *newn, *end, *value;
3293: size_t oldsz, newsz, valsz;
3294:
3295: newn = oldn = buf->buf + pos;
3296: if (*newn == '\0')
3297: return ROFF_IGN;
3298:
3299: newsz = roff_getname(r, &oldn, ln, pos);
3300: if (newn[newsz] == '\\' || *oldn == '\0')
3301: return ROFF_IGN;
3302:
3303: end = oldn;
3304: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3305: if (oldsz == 0)
3306: return ROFF_IGN;
3307:
1.338 schwarze 3308: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3309: (int)oldsz, oldn);
1.311 schwarze 3310: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3311: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3312: free(value);
3313: return ROFF_IGN;
3314: }
3315:
1.340 schwarze 3316: static int
1.296 schwarze 3317: roff_br(ROFF_ARGS)
1.251 schwarze 3318: {
1.302 schwarze 3319: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3320: man_breakscope(r->man, ROFF_br);
1.296 schwarze 3321: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3322: if (buf->buf[pos] != '\0')
3323: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3324: "%s %s", roff_name[tok], buf->buf + pos);
3325: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3326: r->man->next = ROFF_NEXT_SIBLING;
3327: return ROFF_IGN;
1.92 schwarze 3328: }
3329:
1.340 schwarze 3330: static int
1.174 kristaps 3331: roff_cc(ROFF_ARGS)
3332: {
3333: const char *p;
3334:
1.238 schwarze 3335: p = buf->buf + pos;
1.174 kristaps 3336:
1.238 schwarze 3337: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3338: r->control = '\0';
1.174 kristaps 3339:
1.238 schwarze 3340: if (*p != '\0')
1.260 schwarze 3341: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3342: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3343:
1.341 schwarze 3344: return ROFF_IGN;
3345: }
3346:
3347: static int
3348: roff_char(ROFF_ARGS)
3349: {
3350: const char *p, *kp, *vp;
3351: size_t ksz, vsz;
3352: int font;
3353:
3354: /* Parse the character to be replaced. */
3355:
3356: kp = buf->buf + pos;
3357: p = kp + 1;
3358: if (*kp == '\0' || (*kp == '\\' &&
3359: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3360: (*p != ' ' && *p != '\0')) {
3361: mandoc_vmsg(MANDOCERR_CHAR_ARG, r->parse,
3362: ln, pos, "char %s", kp);
3363: return ROFF_IGN;
3364: }
3365: ksz = p - kp;
3366: while (*p == ' ')
3367: p++;
3368:
3369: /*
3370: * If the replacement string contains a font escape sequence,
3371: * we have to restore the font at the end.
3372: */
3373:
3374: vp = p;
3375: vsz = strlen(p);
3376: font = 0;
3377: while (*p != '\0') {
3378: if (*p++ != '\\')
3379: continue;
3380: switch (mandoc_escape(&p, NULL, NULL)) {
3381: case ESCAPE_FONT:
3382: case ESCAPE_FONTROMAN:
3383: case ESCAPE_FONTITALIC:
3384: case ESCAPE_FONTBOLD:
3385: case ESCAPE_FONTBI:
1.342 schwarze 3386: case ESCAPE_FONTCW:
1.341 schwarze 3387: case ESCAPE_FONTPREV:
3388: font++;
3389: break;
3390: default:
3391: break;
3392: }
3393: }
3394: if (font > 1)
3395: mandoc_msg(MANDOCERR_CHAR_FONT, r->parse,
3396: ln, vp - buf->buf, vp);
3397:
3398: /*
3399: * Approximate the effect of .char using the .tr tables.
3400: * XXX In groff, .char and .tr interact differently.
3401: */
3402:
3403: if (ksz == 1) {
3404: if (r->xtab == NULL)
3405: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3406: assert((unsigned int)*kp < 128);
3407: free(r->xtab[(int)*kp].p);
3408: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3409: "%s%s", vp, font ? "\fP" : "");
3410: } else {
3411: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3412: if (font)
3413: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3414: }
1.277 schwarze 3415: return ROFF_IGN;
1.174 kristaps 3416: }
3417:
1.340 schwarze 3418: static int
1.303 schwarze 3419: roff_ec(ROFF_ARGS)
3420: {
3421: const char *p;
3422:
3423: p = buf->buf + pos;
3424: if (*p == '\0')
3425: r->escape = '\\';
3426: else {
3427: r->escape = *p;
3428: if (*++p != '\0')
3429: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3430: ln, p - buf->buf, "ec ... %s", p);
3431: }
3432: return ROFF_IGN;
3433: }
3434:
1.340 schwarze 3435: static int
1.303 schwarze 3436: roff_eo(ROFF_ARGS)
3437: {
3438: r->escape = '\0';
3439: if (buf->buf[pos] != '\0')
3440: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3441: ln, pos, "eo %s", buf->buf + pos);
3442: return ROFF_IGN;
1.330 schwarze 3443: }
3444:
1.340 schwarze 3445: static int
1.330 schwarze 3446: roff_nop(ROFF_ARGS)
3447: {
3448: while (buf->buf[pos] == ' ')
3449: pos++;
3450: *offs = pos;
3451: return ROFF_RERUN;
1.303 schwarze 3452: }
3453:
1.340 schwarze 3454: static int
1.164 kristaps 3455: roff_tr(ROFF_ARGS)
3456: {
3457: const char *p, *first, *second;
3458: size_t fsz, ssz;
3459: enum mandoc_esc esc;
3460:
1.238 schwarze 3461: p = buf->buf + pos;
1.164 kristaps 3462:
1.238 schwarze 3463: if (*p == '\0') {
1.260 schwarze 3464: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 3465: return ROFF_IGN;
1.164 kristaps 3466: }
3467:
1.238 schwarze 3468: while (*p != '\0') {
1.164 kristaps 3469: fsz = ssz = 1;
3470:
3471: first = p++;
1.238 schwarze 3472: if (*first == '\\') {
1.164 kristaps 3473: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3474: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3475: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3476: ln, (int)(p - buf->buf), first);
1.277 schwarze 3477: return ROFF_IGN;
1.164 kristaps 3478: }
3479: fsz = (size_t)(p - first);
3480: }
3481:
3482: second = p++;
1.238 schwarze 3483: if (*second == '\\') {
1.164 kristaps 3484: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3485: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3486: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3487: ln, (int)(p - buf->buf), second);
1.277 schwarze 3488: return ROFF_IGN;
1.164 kristaps 3489: }
3490: ssz = (size_t)(p - second);
1.238 schwarze 3491: } else if (*second == '\0') {
1.260 schwarze 3492: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3493: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3494: second = " ";
1.165 kristaps 3495: p--;
1.164 kristaps 3496: }
3497:
1.167 kristaps 3498: if (fsz > 1) {
1.207 schwarze 3499: roff_setstrn(&r->xmbtab, first, fsz,
3500: second, ssz, 0);
1.167 kristaps 3501: continue;
3502: }
3503:
1.238 schwarze 3504: if (r->xtab == NULL)
1.207 schwarze 3505: r->xtab = mandoc_calloc(128,
3506: sizeof(struct roffstr));
1.167 kristaps 3507:
3508: free(r->xtab[(int)*first].p);
3509: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3510: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3511: }
3512:
1.277 schwarze 3513: return ROFF_IGN;
1.164 kristaps 3514: }
3515:
1.339 schwarze 3516: /*
3517: * Implementation of the .return request.
3518: * There is no need to call roff_userret() from here.
3519: * The read module will call that after rewinding the reader stack
3520: * to the place from where the current macro was called.
3521: */
1.340 schwarze 3522: static int
1.339 schwarze 3523: roff_return(ROFF_ARGS)
3524: {
3525: if (r->mstackpos >= 0)
1.340 schwarze 3526: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3527:
3528: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "return");
3529: return ROFF_IGN;
3530: }
3531:
1.340 schwarze 3532: static int
1.306 schwarze 3533: roff_rn(ROFF_ARGS)
3534: {
3535: const char *value;
3536: char *oldn, *newn, *end;
3537: size_t oldsz, newsz;
1.315 schwarze 3538: int deftype;
1.306 schwarze 3539:
3540: oldn = newn = buf->buf + pos;
3541: if (*oldn == '\0')
3542: return ROFF_IGN;
3543:
3544: oldsz = roff_getname(r, &newn, ln, pos);
3545: if (oldn[oldsz] == '\\' || *newn == '\0')
3546: return ROFF_IGN;
3547:
3548: end = newn;
3549: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3550: if (newsz == 0)
3551: return ROFF_IGN;
3552:
1.315 schwarze 3553: deftype = ROFFDEF_ANY;
3554: value = roff_getstrn(r, oldn, oldsz, &deftype);
3555: switch (deftype) {
3556: case ROFFDEF_USER:
1.306 schwarze 3557: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3558: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3559: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3560: break;
3561: case ROFFDEF_PRE:
3562: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3563: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3564: break;
3565: case ROFFDEF_REN:
1.306 schwarze 3566: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3567: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3568: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3569: break;
3570: case ROFFDEF_STD:
1.306 schwarze 3571: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3572: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3573: break;
3574: default:
3575: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3576: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3577: break;
3578: }
1.306 schwarze 3579: return ROFF_IGN;
3580: }
3581:
1.340 schwarze 3582: static int
1.339 schwarze 3583: roff_shift(ROFF_ARGS)
3584: {
3585: struct mctx *ctx;
3586: int levels, i;
3587:
3588: levels = 1;
3589: if (buf->buf[pos] != '\0' &&
3590: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
3591: mandoc_vmsg(MANDOCERR_CE_NONUM, r->parse,
3592: ln, pos, "shift %s", buf->buf + pos);
3593: levels = 1;
3594: }
3595: if (r->mstackpos < 0) {
3596: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "shift");
3597: return ROFF_IGN;
3598: }
3599: ctx = r->mstack + r->mstackpos;
3600: if (levels > ctx->argc) {
3601: mandoc_vmsg(MANDOCERR_SHIFT, r->parse,
3602: ln, pos, "%d, but max is %d", levels, ctx->argc);
3603: levels = ctx->argc;
3604: }
3605: if (levels == 0)
3606: return ROFF_IGN;
3607: for (i = 0; i < levels; i++)
3608: free(ctx->argv[i]);
3609: ctx->argc -= levels;
3610: for (i = 0; i < ctx->argc; i++)
3611: ctx->argv[i] = ctx->argv[i + levels];
3612: return ROFF_IGN;
3613: }
3614:
1.340 schwarze 3615: static int
1.105 kristaps 3616: roff_so(ROFF_ARGS)
3617: {
1.249 schwarze 3618: char *name, *cp;
1.105 kristaps 3619:
1.238 schwarze 3620: name = buf->buf + pos;
1.224 schwarze 3621: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3622:
3623: /*
3624: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3625: * opening anything that's not in our cwd or anything beneath
3626: * it. Thus, explicitly disallow traversing up the file-system
3627: * or using absolute paths.
3628: */
3629:
1.238 schwarze 3630: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3631: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3632: ".so %s", name);
1.249 schwarze 3633: buf->sz = mandoc_asprintf(&cp,
3634: ".sp\nSee the file %s.\n.sp", name) + 1;
3635: free(buf->buf);
3636: buf->buf = cp;
3637: *offs = 0;
1.277 schwarze 3638: return ROFF_REPARSE;
1.105 kristaps 3639: }
3640:
3641: *offs = pos;
1.277 schwarze 3642: return ROFF_SO;
1.105 kristaps 3643: }
1.92 schwarze 3644:
1.266 schwarze 3645: /* --- user defined strings and macros ------------------------------------ */
3646:
1.340 schwarze 3647: static int
1.106 kristaps 3648: roff_userdef(ROFF_ARGS)
1.99 kristaps 3649: {
1.339 schwarze 3650: struct mctx *ctx;
3651: char *arg, *ap, *dst, *src;
3652: size_t sz;
3653:
3654: /* Initialize a new macro stack context. */
3655:
3656: if (++r->mstackpos == r->mstacksz) {
3657: r->mstack = mandoc_recallocarray(r->mstack,
3658: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3659: r->mstacksz += 8;
3660: }
3661: ctx = r->mstack + r->mstackpos;
3662: ctx->argsz = 0;
3663: ctx->argc = 0;
3664: ctx->argv = NULL;
3665:
3666: /*
3667: * Collect pointers to macro argument strings,
3668: * NUL-terminating them and escaping quotes.
3669: */
3670:
3671: src = buf->buf + pos;
3672: while (*src != '\0') {
3673: if (ctx->argc == ctx->argsz) {
3674: ctx->argsz += 8;
3675: ctx->argv = mandoc_reallocarray(ctx->argv,
3676: ctx->argsz, sizeof(*ctx->argv));
3677: }
3678: arg = mandoc_getarg(r->parse, &src, ln, &pos);
3679: sz = 1; /* For the terminating NUL. */
3680: for (ap = arg; *ap != '\0'; ap++)
3681: sz += *ap == '"' ? 4 : 1;
3682: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3683: for (ap = arg; *ap != '\0'; ap++) {
3684: if (*ap == '"') {
3685: memcpy(dst, "\\(dq", 4);
3686: dst += 4;
3687: } else
3688: *dst++ = *ap;
1.106 kristaps 3689: }
1.339 schwarze 3690: *dst = '\0';
1.337 schwarze 3691: }
3692:
1.339 schwarze 3693: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3694:
1.238 schwarze 3695: free(buf->buf);
1.339 schwarze 3696: buf->buf = mandoc_strdup(r->current_string);
3697: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3698: *offs = 0;
1.106 kristaps 3699:
1.277 schwarze 3700: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3701: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3702: }
1.121 schwarze 3703:
1.306 schwarze 3704: /*
3705: * Calling a high-level macro that was renamed with .rn.
3706: * r->current_string has already been set up by roff_parse().
3707: */
1.340 schwarze 3708: static int
1.306 schwarze 3709: roff_renamed(ROFF_ARGS)
3710: {
3711: char *nbuf;
3712:
1.315 schwarze 3713: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3714: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3715: free(buf->buf);
3716: buf->buf = nbuf;
1.329 schwarze 3717: *offs = 0;
1.306 schwarze 3718: return ROFF_CONT;
3719: }
3720:
1.212 schwarze 3721: static size_t
1.121 schwarze 3722: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3723: {
3724: char *name, *cp;
1.212 schwarze 3725: size_t namesz;
1.121 schwarze 3726:
3727: name = *cpp;
3728: if ('\0' == *name)
1.277 schwarze 3729: return 0;
1.121 schwarze 3730:
1.212 schwarze 3731: /* Read until end of name and terminate it with NUL. */
3732: for (cp = name; 1; cp++) {
3733: if ('\0' == *cp || ' ' == *cp) {
3734: namesz = cp - name;
3735: break;
3736: }
1.121 schwarze 3737: if ('\\' != *cp)
3738: continue;
1.215 schwarze 3739: namesz = cp - name;
3740: if ('{' == cp[1] || '}' == cp[1])
3741: break;
1.121 schwarze 3742: cp++;
3743: if ('\\' == *cp)
3744: continue;
1.224 schwarze 3745: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3746: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3747: mandoc_escape((const char **)&cp, NULL, NULL);
3748: break;
1.121 schwarze 3749: }
3750:
3751: /* Read past spaces. */
3752: while (' ' == *cp)
3753: cp++;
3754:
3755: *cpp = cp;
1.277 schwarze 3756: return namesz;
1.121 schwarze 3757: }
3758:
1.106 kristaps 3759: /*
3760: * Store *string into the user-defined string called *name.
3761: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3762: * append == 0: replace mode
3763: * append == 1: single-line append mode
3764: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3765: */
1.94 kristaps 3766: static void
1.106 kristaps 3767: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3768: int append)
1.92 schwarze 3769: {
1.315 schwarze 3770: size_t namesz;
1.164 kristaps 3771:
1.315 schwarze 3772: namesz = strlen(name);
3773: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 3774: string ? strlen(string) : 0, append);
1.315 schwarze 3775: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 3776: }
3777:
3778: static void
1.166 kristaps 3779: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3780: const char *string, size_t stringsz, int append)
1.164 kristaps 3781: {
1.166 kristaps 3782: struct roffkv *n;
1.164 kristaps 3783: char *c;
3784: int i;
3785: size_t oldch, newch;
1.92 schwarze 3786:
1.106 kristaps 3787: /* Search for an existing string with the same name. */
1.164 kristaps 3788: n = *r;
3789:
1.211 schwarze 3790: while (n && (namesz != n->key.sz ||
3791: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3792: n = n->next;
1.94 kristaps 3793:
3794: if (NULL == n) {
1.106 kristaps 3795: /* Create a new string table entry. */
1.166 kristaps 3796: n = mandoc_malloc(sizeof(struct roffkv));
3797: n->key.p = mandoc_strndup(name, namesz);
3798: n->key.sz = namesz;
3799: n->val.p = NULL;
3800: n->val.sz = 0;
1.164 kristaps 3801: n->next = *r;
3802: *r = n;
1.193 schwarze 3803: } else if (0 == append) {
1.166 kristaps 3804: free(n->val.p);
3805: n->val.p = NULL;
3806: n->val.sz = 0;
1.106 kristaps 3807: }
3808:
3809: if (NULL == string)
3810: return;
3811:
3812: /*
3813: * One additional byte for the '\n' in multiline mode,
3814: * and one for the terminating '\0'.
3815: */
1.193 schwarze 3816: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3817:
1.166 kristaps 3818: if (NULL == n->val.p) {
3819: n->val.p = mandoc_malloc(newch);
3820: *n->val.p = '\0';
1.106 kristaps 3821: oldch = 0;
3822: } else {
1.166 kristaps 3823: oldch = n->val.sz;
3824: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3825: }
3826:
3827: /* Skip existing content in the destination buffer. */
1.166 kristaps 3828: c = n->val.p + (int)oldch;
1.106 kristaps 3829:
3830: /* Append new content to the destination buffer. */
1.164 kristaps 3831: i = 0;
3832: while (i < (int)stringsz) {
1.106 kristaps 3833: /*
3834: * Rudimentary roff copy mode:
3835: * Handle escaped backslashes.
3836: */
1.164 kristaps 3837: if ('\\' == string[i] && '\\' == string[i + 1])
3838: i++;
3839: *c++ = string[i++];
1.106 kristaps 3840: }
1.94 kristaps 3841:
1.106 kristaps 3842: /* Append terminating bytes. */
1.193 schwarze 3843: if (1 < append)
1.106 kristaps 3844: *c++ = '\n';
1.163 kristaps 3845:
1.106 kristaps 3846: *c = '\0';
1.166 kristaps 3847: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3848: }
3849:
1.94 kristaps 3850: static const char *
1.325 schwarze 3851: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 3852: int *deftype)
1.92 schwarze 3853: {
1.315 schwarze 3854: const struct roffkv *n;
1.325 schwarze 3855: int found, i;
1.315 schwarze 3856: enum roff_tok tok;
3857:
1.325 schwarze 3858: found = 0;
3859: for (n = r->strtab; n != NULL; n = n->next) {
3860: if (strncmp(name, n->key.p, len) != 0 ||
3861: n->key.p[len] != '\0' || n->val.p == NULL)
3862: continue;
3863: if (*deftype & ROFFDEF_USER) {
3864: *deftype = ROFFDEF_USER;
3865: return n->val.p;
3866: } else {
3867: found = 1;
3868: break;
3869: }
3870: }
3871: for (n = r->rentab; n != NULL; n = n->next) {
3872: if (strncmp(name, n->key.p, len) != 0 ||
3873: n->key.p[len] != '\0' || n->val.p == NULL)
3874: continue;
3875: if (*deftype & ROFFDEF_REN) {
3876: *deftype = ROFFDEF_REN;
3877: return n->val.p;
3878: } else {
3879: found = 1;
3880: break;
1.315 schwarze 3881: }
3882: }
1.325 schwarze 3883: for (i = 0; i < PREDEFS_MAX; i++) {
3884: if (strncmp(name, predefs[i].name, len) != 0 ||
3885: predefs[i].name[len] != '\0')
3886: continue;
3887: if (*deftype & ROFFDEF_PRE) {
3888: *deftype = ROFFDEF_PRE;
3889: return predefs[i].str;
3890: } else {
3891: found = 1;
3892: break;
1.315 schwarze 3893: }
3894: }
1.325 schwarze 3895: if (r->man->macroset != MACROSET_MAN) {
3896: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3897: if (strncmp(name, roff_name[tok], len) != 0 ||
3898: roff_name[tok][len] != '\0')
3899: continue;
3900: if (*deftype & ROFFDEF_STD) {
3901: *deftype = ROFFDEF_STD;
3902: return NULL;
3903: } else {
3904: found = 1;
3905: break;
1.315 schwarze 3906: }
3907: }
3908: }
1.325 schwarze 3909: if (r->man->macroset != MACROSET_MDOC) {
3910: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3911: if (strncmp(name, roff_name[tok], len) != 0 ||
3912: roff_name[tok][len] != '\0')
3913: continue;
3914: if (*deftype & ROFFDEF_STD) {
3915: *deftype = ROFFDEF_STD;
3916: return NULL;
3917: } else {
3918: found = 1;
3919: break;
1.315 schwarze 3920: }
3921: }
1.325 schwarze 3922: }
3923:
3924: if (found == 0 && *deftype != ROFFDEF_ANY) {
3925: if (*deftype & ROFFDEF_REN) {
3926: /*
3927: * This might still be a request,
3928: * so do not treat it as undefined yet.
3929: */
3930: *deftype = ROFFDEF_UNDEF;
3931: return NULL;
1.315 schwarze 3932: }
1.325 schwarze 3933:
3934: /* Using an undefined string defines it to be empty. */
3935:
3936: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3937: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 3938: }
1.325 schwarze 3939:
1.315 schwarze 3940: *deftype = 0;
1.277 schwarze 3941: return NULL;
1.92 schwarze 3942: }
3943:
1.94 kristaps 3944: static void
1.167 kristaps 3945: roff_freestr(struct roffkv *r)
1.92 schwarze 3946: {
1.166 kristaps 3947: struct roffkv *n, *nn;
1.92 schwarze 3948:
1.167 kristaps 3949: for (n = r; n; n = nn) {
1.166 kristaps 3950: free(n->key.p);
3951: free(n->val.p);
1.92 schwarze 3952: nn = n->next;
3953: free(n);
3954: }
1.114 kristaps 3955: }
1.266 schwarze 3956:
3957: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 3958:
3959: /*
3960: * Duplicate an input string, making the appropriate character
3961: * conversations (as stipulated by `tr') along the way.
3962: * Returns a heap-allocated string with all the replacements made.
3963: */
3964: char *
3965: roff_strdup(const struct roff *r, const char *p)
3966: {
1.166 kristaps 3967: const struct roffkv *cp;
1.164 kristaps 3968: char *res;
3969: const char *pp;
3970: size_t ssz, sz;
3971: enum mandoc_esc esc;
3972:
1.167 kristaps 3973: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3974: return mandoc_strdup(p);
1.164 kristaps 3975: else if ('\0' == *p)
1.277 schwarze 3976: return mandoc_strdup("");
1.164 kristaps 3977:
3978: /*
3979: * Step through each character looking for term matches
3980: * (remember that a `tr' can be invoked with an escape, which is
3981: * a glyph but the escape is multi-character).
3982: * We only do this if the character hash has been initialised
3983: * and the string is >0 length.
3984: */
3985:
3986: res = NULL;
3987: ssz = 0;
3988:
3989: while ('\0' != *p) {
1.289 schwarze 3990: assert((unsigned int)*p < 128);
3991: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3992: sz = r->xtab[(int)*p].sz;
3993: res = mandoc_realloc(res, ssz + sz + 1);
3994: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3995: ssz += sz;
3996: p++;
3997: continue;
3998: } else if ('\\' != *p) {
3999: res = mandoc_realloc(res, ssz + 2);
4000: res[ssz++] = *p++;
4001: continue;
4002: }
4003:
1.164 kristaps 4004: /* Search for term matches. */
1.167 kristaps 4005: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4006: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4007: break;
4008:
4009: if (NULL != cp) {
4010: /*
4011: * A match has been found.
4012: * Append the match to the array and move
4013: * forward by its keysize.
4014: */
1.207 schwarze 4015: res = mandoc_realloc(res,
4016: ssz + cp->val.sz + 1);
1.166 kristaps 4017: memcpy(res + ssz, cp->val.p, cp->val.sz);
4018: ssz += cp->val.sz;
4019: p += (int)cp->key.sz;
1.164 kristaps 4020: continue;
4021: }
4022:
1.167 kristaps 4023: /*
4024: * Handle escapes carefully: we need to copy
4025: * over just the escape itself, or else we might
4026: * do replacements within the escape itself.
4027: * Make sure to pass along the bogus string.
4028: */
4029: pp = p++;
4030: esc = mandoc_escape(&p, NULL, NULL);
4031: if (ESCAPE_ERROR == esc) {
4032: sz = strlen(pp);
1.164 kristaps 4033: res = mandoc_realloc(res, ssz + sz + 1);
4034: memcpy(res + ssz, pp, sz);
1.167 kristaps 4035: break;
1.164 kristaps 4036: }
1.207 schwarze 4037: /*
4038: * We bail out on bad escapes.
1.167 kristaps 4039: * No need to warn: we already did so when
4040: * roff_res() was called.
4041: */
4042: sz = (int)(p - pp);
4043: res = mandoc_realloc(res, ssz + sz + 1);
4044: memcpy(res + ssz, pp, sz);
4045: ssz += sz;
1.164 kristaps 4046: }
4047:
4048: res[(int)ssz] = '\0';
1.277 schwarze 4049: return res;
1.227 schwarze 4050: }
4051:
4052: int
4053: roff_getformat(const struct roff *r)
4054: {
4055:
1.277 schwarze 4056: return r->format;
1.174 kristaps 4057: }
4058:
4059: /*
1.207 schwarze 4060: * Find out whether a line is a macro line or not.
1.174 kristaps 4061: * If it is, adjust the current position and return one; if it isn't,
4062: * return zero and don't change the current position.
4063: * If the control character has been set with `.cc', then let that grain
4064: * precedence.
4065: * This is slighly contrary to groff, where using the non-breaking
4066: * control character when `cc' has been invoked will cause the
4067: * non-breaking macro contents to be printed verbatim.
4068: */
4069: int
4070: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4071: {
4072: int pos;
4073:
4074: pos = *ppos;
4075:
1.303 schwarze 4076: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4077: pos++;
1.303 schwarze 4078: else if (r->control != '\0')
1.277 schwarze 4079: return 0;
1.174 kristaps 4080: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4081: pos += 2;
4082: else if ('.' == cp[pos] || '\'' == cp[pos])
4083: pos++;
4084: else
1.277 schwarze 4085: return 0;
1.174 kristaps 4086:
4087: while (' ' == cp[pos] || '\t' == cp[pos])
4088: pos++;
4089:
4090: *ppos = pos;
1.277 schwarze 4091: return 1;
1.74 kristaps 4092: }
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