Annotation of mandoc/roff.c, Revision 1.339
1.339 ! schwarze 1: /* $Id: roff.c,v 1.338 2018/08/21 18:15:22 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:
146: typedef enum rofferr (*roffproc)(ROFF_ARGS);
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:
1.155 kristaps 166: static void roffnode_cleanscope(struct roff *);
167: static void 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 *);
1.311 schwarze 171: static enum rofferr roff_als(ROFF_ARGS);
1.80 kristaps 172: static enum rofferr roff_block(ROFF_ARGS);
173: static enum rofferr roff_block_text(ROFF_ARGS);
174: static enum rofferr roff_block_sub(ROFF_ARGS);
1.296 schwarze 175: static enum rofferr roff_br(ROFF_ARGS);
1.80 kristaps 176: static enum rofferr roff_cblock(ROFF_ARGS);
1.174 kristaps 177: static enum rofferr roff_cc(ROFF_ARGS);
1.195 schwarze 178: static void roff_ccond(struct roff *, int, int);
1.82 kristaps 179: static enum rofferr roff_cond(ROFF_ARGS);
180: static enum rofferr roff_cond_text(ROFF_ARGS);
181: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.92 schwarze 182: static enum rofferr roff_ds(ROFF_ARGS);
1.303 schwarze 183: static enum rofferr roff_ec(ROFF_ARGS);
184: static enum rofferr roff_eo(ROFF_ARGS);
1.238 schwarze 185: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 186: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 187: static int roff_evalnum(struct roff *, int,
188: const char *, int *, int *, int);
189: static int roff_evalpar(struct roff *, int,
1.261 schwarze 190: const char *, int *, int *, int);
1.198 schwarze 191: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 192: static void roff_free1(struct roff *);
1.180 schwarze 193: static void roff_freereg(struct roffreg *);
1.167 kristaps 194: static void roff_freestr(struct roffkv *);
1.212 schwarze 195: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 196: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 197: static int roff_getop(const char *, int *, char *);
1.327 schwarze 198: static int roff_getregn(struct roff *,
199: const char *, size_t, char);
1.273 schwarze 200: static int roff_getregro(const struct roff *,
201: const char *name);
1.325 schwarze 202: static const char *roff_getstrn(struct roff *,
1.315 schwarze 203: const char *, size_t, int *);
1.271 schwarze 204: static int roff_hasregn(const struct roff *,
205: const char *, size_t);
1.251 schwarze 206: static enum rofferr roff_insec(ROFF_ARGS);
1.178 schwarze 207: static enum rofferr roff_it(ROFF_ARGS);
1.103 kristaps 208: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.265 schwarze 209: static void roff_man_alloc1(struct roff_man *);
210: static void roff_man_free1(struct roff_man *);
1.300 schwarze 211: static enum rofferr roff_manyarg(ROFF_ARGS);
1.330 schwarze 212: static enum rofferr roff_nop(ROFF_ARGS);
1.89 kristaps 213: static enum rofferr roff_nr(ROFF_ARGS);
1.297 schwarze 214: static enum rofferr roff_onearg(ROFF_ARGS);
1.294 schwarze 215: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 216: int, int);
1.305 schwarze 217: static enum rofferr roff_parsetext(struct roff *, struct buf *,
218: int, int *);
1.306 schwarze 219: static enum rofferr roff_renamed(ROFF_ARGS);
1.238 schwarze 220: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.339 ! schwarze 221: static enum rofferr roff_return(ROFF_ARGS);
1.122 schwarze 222: static enum rofferr roff_rm(ROFF_ARGS);
1.306 schwarze 223: static enum rofferr roff_rn(ROFF_ARGS);
1.203 schwarze 224: static enum rofferr roff_rr(ROFF_ARGS);
1.326 schwarze 225: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 226: size_t, int, char, int);
1.94 kristaps 227: static void roff_setstr(struct roff *,
1.106 kristaps 228: const char *, const char *, int);
1.207 schwarze 229: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 230: size_t, const char *, size_t, int);
1.339 ! schwarze 231: static enum rofferr roff_shift(ROFF_ARGS);
1.105 kristaps 232: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 233: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 234: static enum rofferr roff_Dd(ROFF_ARGS);
1.109 kristaps 235: static enum rofferr roff_TE(ROFF_ARGS);
236: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 237: static enum rofferr roff_EQ(ROFF_ARGS);
238: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 239: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 240: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 241: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 242:
1.266 schwarze 243: /* --- constant data ------------------------------------------------------ */
244:
1.261 schwarze 245: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
246: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
247:
1.294 schwarze 248: const char *__roff_name[MAN_MAX + 1] = {
1.305 schwarze 249: "br", "ce", "ft", "ll",
1.312 schwarze 250: "mc", "po", "rj", "sp",
251: "ta", "ti", NULL,
1.294 schwarze 252: "ab", "ad", "af", "aln",
253: "als", "am", "am1", "ami",
254: "ami1", "as", "as1", "asciify",
255: "backtrace", "bd", "bleedat", "blm",
256: "box", "boxa", "bp", "BP",
257: "break", "breakchar", "brnl", "brp",
1.305 schwarze 258: "brpnl", "c2", "cc",
1.294 schwarze 259: "cf", "cflags", "ch", "char",
260: "chop", "class", "close", "CL",
261: "color", "composite", "continue", "cp",
262: "cropat", "cs", "cu", "da",
263: "dch", "Dd", "de", "de1",
264: "defcolor", "dei", "dei1", "device",
265: "devicem", "di", "do", "ds",
266: "ds1", "dwh", "dt", "ec",
267: "ecr", "ecs", "el", "em",
268: "EN", "eo", "EP", "EQ",
269: "errprint", "ev", "evc", "ex",
270: "fallback", "fam", "fc", "fchar",
271: "fcolor", "fdeferlig", "feature", "fkern",
272: "fl", "flig", "fp", "fps",
273: "fschar", "fspacewidth", "fspecial", "ftr",
274: "fzoom", "gcolor", "hc", "hcode",
275: "hidechar", "hla", "hlm", "hpf",
276: "hpfa", "hpfcode", "hw", "hy",
277: "hylang", "hylen", "hym", "hypp",
278: "hys", "ie", "if", "ig",
279: "index", "it", "itc", "IX",
280: "kern", "kernafter", "kernbefore", "kernpair",
281: "lc", "lc_ctype", "lds", "length",
282: "letadj", "lf", "lg", "lhang",
283: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 284: "ls", "lsm", "lt",
1.294 schwarze 285: "mediasize", "minss", "mk", "mso",
286: "na", "ne", "nh", "nhychar",
287: "nm", "nn", "nop", "nr",
288: "nrf", "nroff", "ns", "nx",
289: "open", "opena", "os", "output",
290: "padj", "papersize", "pc", "pev",
291: "pi", "PI", "pl", "pm",
1.312 schwarze 292: "pn", "pnr", "ps",
1.294 schwarze 293: "psbb", "pshape", "pso", "ptr",
294: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 295: "return", "rfschar", "rhang",
1.294 schwarze 296: "rm", "rn", "rnn", "rr",
297: "rs", "rt", "schar", "sentchar",
298: "shc", "shift", "sizes", "so",
299: "spacewidth", "special", "spreadwarn", "ss",
300: "sty", "substring", "sv", "sy",
1.300 schwarze 301: "T&", "tc", "TE",
1.301 schwarze 302: "TH", "tkf", "tl",
1.294 schwarze 303: "tm", "tm1", "tmc", "tr",
304: "track", "transchar", "trf", "trimat",
305: "trin", "trnt", "troff", "TS",
306: "uf", "ul", "unformat", "unwatch",
307: "unwatchn", "vpt", "vs", "warn",
308: "warnscale", "watch", "watchlength", "watchn",
309: "wh", "while", "write", "writec",
310: "writem", "xflag", ".", NULL,
1.306 schwarze 311: NULL, "text",
1.294 schwarze 312: "Dd", "Dt", "Os", "Sh",
313: "Ss", "Pp", "D1", "Dl",
314: "Bd", "Ed", "Bl", "El",
315: "It", "Ad", "An", "Ap",
316: "Ar", "Cd", "Cm", "Dv",
317: "Er", "Ev", "Ex", "Fa",
318: "Fd", "Fl", "Fn", "Ft",
319: "Ic", "In", "Li", "Nd",
320: "Nm", "Op", "Ot", "Pa",
321: "Rv", "St", "Va", "Vt",
322: "Xr", "%A", "%B", "%D",
323: "%I", "%J", "%N", "%O",
324: "%P", "%R", "%T", "%V",
325: "Ac", "Ao", "Aq", "At",
326: "Bc", "Bf", "Bo", "Bq",
327: "Bsx", "Bx", "Db", "Dc",
328: "Do", "Dq", "Ec", "Ef",
329: "Em", "Eo", "Fx", "Ms",
330: "No", "Ns", "Nx", "Ox",
331: "Pc", "Pf", "Po", "Pq",
332: "Qc", "Ql", "Qo", "Qq",
333: "Re", "Rs", "Sc", "So",
334: "Sq", "Sm", "Sx", "Sy",
335: "Tn", "Ux", "Xc", "Xo",
336: "Fo", "Fc", "Oo", "Oc",
337: "Bk", "Ek", "Bt", "Hf",
338: "Fr", "Ud", "Lb", "Lp",
339: "Lk", "Mt", "Brq", "Bro",
340: "Brc", "%C", "Es", "En",
1.299 schwarze 341: "Dx", "%Q", "%U", "Ta",
342: NULL,
1.294 schwarze 343: "TH", "SH", "SS", "TP",
1.332 schwarze 344: "TQ",
1.294 schwarze 345: "LP", "PP", "P", "IP",
346: "HP", "SM", "SB", "BI",
347: "IB", "BR", "RB", "R",
348: "B", "I", "IR", "RI",
1.299 schwarze 349: "nf", "fi",
1.294 schwarze 350: "RE", "RS", "DT", "UC",
1.297 schwarze 351: "PD", "AT", "in",
1.333 schwarze 352: "SY", "YS", "OP",
353: "EX", "EE", "UR",
1.317 schwarze 354: "UE", "MT", "ME", NULL
1.294 schwarze 355: };
356: const char *const *roff_name = __roff_name;
357:
358: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 359: { roff_br, NULL, NULL, 0 }, /* br */
1.305 schwarze 360: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.297 schwarze 361: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 362: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 363: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.312 schwarze 364: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 365: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 366: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 367: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 368: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 369: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 370: { roff_unsupp, NULL, NULL, 0 }, /* ab */
371: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
372: { roff_line_ignore, NULL, NULL, 0 }, /* af */
373: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 374: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 375: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
376: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
377: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
378: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
379: { roff_ds, NULL, NULL, 0 }, /* as */
380: { roff_ds, NULL, NULL, 0 }, /* as1 */
381: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
382: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
383: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
384: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
385: { roff_unsupp, NULL, NULL, 0 }, /* blm */
386: { roff_unsupp, NULL, NULL, 0 }, /* box */
387: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
388: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
389: { roff_unsupp, NULL, NULL, 0 }, /* BP */
390: { roff_unsupp, NULL, NULL, 0 }, /* break */
391: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
392: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 393: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 394: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
395: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
396: { roff_cc, NULL, NULL, 0 }, /* cc */
397: { roff_insec, NULL, NULL, 0 }, /* cf */
398: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
399: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
400: { roff_unsupp, NULL, NULL, 0 }, /* char */
401: { roff_unsupp, NULL, NULL, 0 }, /* chop */
402: { roff_line_ignore, NULL, NULL, 0 }, /* class */
403: { roff_insec, NULL, NULL, 0 }, /* close */
404: { roff_unsupp, NULL, NULL, 0 }, /* CL */
405: { roff_line_ignore, NULL, NULL, 0 }, /* color */
406: { roff_unsupp, NULL, NULL, 0 }, /* composite */
407: { roff_unsupp, NULL, NULL, 0 }, /* continue */
408: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
409: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
410: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
411: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
412: { roff_unsupp, NULL, NULL, 0 }, /* da */
413: { roff_unsupp, NULL, NULL, 0 }, /* dch */
414: { roff_Dd, NULL, NULL, 0 }, /* Dd */
415: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
416: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
417: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
418: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
419: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
420: { roff_unsupp, NULL, NULL, 0 }, /* device */
421: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
422: { roff_unsupp, NULL, NULL, 0 }, /* di */
423: { roff_unsupp, NULL, NULL, 0 }, /* do */
424: { roff_ds, NULL, NULL, 0 }, /* ds */
425: { roff_ds, NULL, NULL, 0 }, /* ds1 */
426: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
427: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 428: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 429: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
430: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
431: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
432: { roff_unsupp, NULL, NULL, 0 }, /* em */
433: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 434: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 435: { roff_unsupp, NULL, NULL, 0 }, /* EP */
436: { roff_EQ, NULL, NULL, 0 }, /* EQ */
437: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
438: { roff_unsupp, NULL, NULL, 0 }, /* ev */
439: { roff_unsupp, NULL, NULL, 0 }, /* evc */
440: { roff_unsupp, NULL, NULL, 0 }, /* ex */
441: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
442: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
443: { roff_unsupp, NULL, NULL, 0 }, /* fc */
444: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
445: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
446: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
447: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
448: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
449: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
450: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
451: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
452: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
453: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
454: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
455: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
456: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
457: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
458: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
459: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
460: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
461: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
462: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
463: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
464: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
465: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
466: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
467: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
468: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
469: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
470: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
471: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
472: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
473: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
474: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
475: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
476: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
477: { roff_unsupp, NULL, NULL, 0 }, /* index */
478: { roff_it, NULL, NULL, 0 }, /* it */
479: { roff_unsupp, NULL, NULL, 0 }, /* itc */
480: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
481: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
482: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
483: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
484: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
485: { roff_unsupp, NULL, NULL, 0 }, /* lc */
486: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
487: { roff_unsupp, NULL, NULL, 0 }, /* lds */
488: { roff_unsupp, NULL, NULL, 0 }, /* length */
489: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
490: { roff_insec, NULL, NULL, 0 }, /* lf */
491: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
492: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
493: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
494: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
495: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
496: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
497: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
498: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
499: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
500: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
501: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
502: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
503: { roff_insec, NULL, NULL, 0 }, /* mso */
504: { roff_line_ignore, NULL, NULL, 0 }, /* na */
505: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
506: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
507: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
508: { roff_unsupp, NULL, NULL, 0 }, /* nm */
509: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 510: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 511: { roff_nr, NULL, NULL, 0 }, /* nr */
512: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
513: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
514: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
515: { roff_insec, NULL, NULL, 0 }, /* nx */
516: { roff_insec, NULL, NULL, 0 }, /* open */
517: { roff_insec, NULL, NULL, 0 }, /* opena */
518: { roff_line_ignore, NULL, NULL, 0 }, /* os */
519: { roff_unsupp, NULL, NULL, 0 }, /* output */
520: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
521: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
522: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
523: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
524: { roff_insec, NULL, NULL, 0 }, /* pi */
525: { roff_unsupp, NULL, NULL, 0 }, /* PI */
526: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
527: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
528: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
529: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
530: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
531: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
532: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
533: { roff_insec, NULL, NULL, 0 }, /* pso */
534: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
535: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
536: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
537: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
538: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 ! schwarze 539: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 540: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
541: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
542: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 543: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 544: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
545: { roff_rr, NULL, NULL, 0 }, /* rr */
546: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
547: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
548: { roff_unsupp, NULL, NULL, 0 }, /* schar */
549: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
550: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 ! schwarze 551: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 552: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
553: { roff_so, NULL, NULL, 0 }, /* so */
554: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
555: { roff_line_ignore, NULL, NULL, 0 }, /* special */
556: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
557: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
558: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
559: { roff_unsupp, NULL, NULL, 0 }, /* substring */
560: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
561: { roff_insec, NULL, NULL, 0 }, /* sy */
562: { roff_T_, NULL, NULL, 0 }, /* T& */
563: { roff_unsupp, NULL, NULL, 0 }, /* tc */
564: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 565: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 566: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
567: { roff_unsupp, NULL, NULL, 0 }, /* tl */
568: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
569: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
570: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
571: { roff_tr, NULL, NULL, 0 }, /* tr */
572: { roff_line_ignore, NULL, NULL, 0 }, /* track */
573: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
574: { roff_insec, NULL, NULL, 0 }, /* trf */
575: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
576: { roff_unsupp, NULL, NULL, 0 }, /* trin */
577: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
578: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
579: { roff_TS, NULL, NULL, 0 }, /* TS */
580: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
581: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
582: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
583: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
584: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
585: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
586: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
587: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
588: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
589: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
590: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
591: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
592: { roff_unsupp, NULL, NULL, 0 }, /* wh */
593: { roff_unsupp, NULL, NULL, 0 }, /* while */
594: { roff_insec, NULL, NULL, 0 }, /* write */
595: { roff_insec, NULL, NULL, 0 }, /* writec */
596: { roff_insec, NULL, NULL, 0 }, /* writem */
597: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
598: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 599: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 600: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 601: };
602:
1.141 kristaps 603: /* Array of injected predefined strings. */
604: #define PREDEFS_MAX 38
605: static const struct predef predefs[PREDEFS_MAX] = {
606: #include "predefs.in"
607: };
608:
1.305 schwarze 609: static int roffce_lines; /* number of input lines to center */
610: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 611: static int roffit_lines; /* number of lines to delay */
612: static char *roffit_macro; /* nil-terminated macro line */
613:
1.207 schwarze 614:
1.266 schwarze 615: /* --- request table ------------------------------------------------------ */
616:
1.295 schwarze 617: struct ohash *
618: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 619: {
1.295 schwarze 620: struct ohash *htab;
621: struct roffreq *req;
622: enum roff_tok tok;
623: size_t sz;
624: unsigned int slot;
1.85 kristaps 625:
1.295 schwarze 626: htab = mandoc_malloc(sizeof(*htab));
627: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 628:
1.295 schwarze 629: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 630: if (roff_name[tok] == NULL)
631: continue;
1.295 schwarze 632: sz = strlen(roff_name[tok]);
633: req = mandoc_malloc(sizeof(*req) + sz + 1);
634: req->tok = tok;
635: memcpy(req->name, roff_name[tok], sz + 1);
636: slot = ohash_qlookup(htab, req->name);
637: ohash_insert(htab, slot, req);
1.85 kristaps 638: }
1.295 schwarze 639: return htab;
1.85 kristaps 640: }
641:
1.295 schwarze 642: void
643: roffhash_free(struct ohash *htab)
1.67 kristaps 644: {
1.295 schwarze 645: struct roffreq *req;
646: unsigned int slot;
1.67 kristaps 647:
1.295 schwarze 648: if (htab == NULL)
649: return;
650: for (req = ohash_first(htab, &slot); req != NULL;
651: req = ohash_next(htab, &slot))
652: free(req);
653: ohash_delete(htab);
654: free(htab);
655: }
656:
657: enum roff_tok
658: roffhash_find(struct ohash *htab, const char *name, size_t sz)
659: {
660: struct roffreq *req;
661: const char *end;
662:
663: if (sz) {
664: end = name + sz;
665: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
666: } else
667: req = ohash_find(htab, ohash_qlookup(htab, name));
668: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 669: }
670:
1.266 schwarze 671: /* --- stack of request blocks -------------------------------------------- */
672:
1.67 kristaps 673: /*
674: * Pop the current node off of the stack of roff instructions currently
675: * pending.
676: */
677: static void
678: roffnode_pop(struct roff *r)
679: {
680: struct roffnode *p;
681:
1.75 kristaps 682: assert(r->last);
1.207 schwarze 683: p = r->last;
1.82 kristaps 684:
1.75 kristaps 685: r->last = r->last->parent;
1.106 kristaps 686: free(p->name);
687: free(p->end);
1.67 kristaps 688: free(p);
689: }
690:
691: /*
692: * Push a roff node onto the instruction stack. This must later be
693: * removed with roffnode_pop().
694: */
1.98 schwarze 695: static void
1.294 schwarze 696: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 697: int line, int col)
1.67 kristaps 698: {
699: struct roffnode *p;
700:
1.98 schwarze 701: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 702: p->tok = tok;
1.106 kristaps 703: if (name)
704: p->name = mandoc_strdup(name);
1.67 kristaps 705: p->parent = r->last;
706: p->line = line;
707: p->col = col;
1.198 schwarze 708: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 709:
710: r->last = p;
711: }
712:
1.266 schwarze 713: /* --- roff parser state data management ---------------------------------- */
714:
1.67 kristaps 715: static void
716: roff_free1(struct roff *r)
717: {
1.176 schwarze 718: struct tbl_node *tbl;
1.167 kristaps 719: int i;
1.67 kristaps 720:
1.176 schwarze 721: while (NULL != (tbl = r->first_tbl)) {
722: r->first_tbl = tbl->next;
723: tbl_free(tbl);
1.109 kristaps 724: }
1.113 kristaps 725: r->first_tbl = r->last_tbl = r->tbl = NULL;
726:
1.319 schwarze 727: if (r->last_eqn != NULL)
728: eqn_free(r->last_eqn);
729: r->last_eqn = r->eqn = NULL;
1.125 kristaps 730:
1.339 ! schwarze 731: while (r->mstackpos >= 0)
! 732: roff_userret(r);
! 733:
1.67 kristaps 734: while (r->last)
735: roffnode_pop(r);
1.109 kristaps 736:
1.223 schwarze 737: free (r->rstack);
738: r->rstack = NULL;
739: r->rstacksz = 0;
740: r->rstackpos = -1;
741:
742: roff_freereg(r->regtab);
743: r->regtab = NULL;
744:
1.167 kristaps 745: roff_freestr(r->strtab);
1.306 schwarze 746: roff_freestr(r->rentab);
1.167 kristaps 747: roff_freestr(r->xmbtab);
1.306 schwarze 748: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 749:
750: if (r->xtab)
751: for (i = 0; i < 128; i++)
752: free(r->xtab[i].p);
753: free(r->xtab);
754: r->xtab = NULL;
1.67 kristaps 755: }
756:
757: void
758: roff_reset(struct roff *r)
759: {
760: roff_free1(r);
1.227 schwarze 761: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 762: r->control = '\0';
763: r->escape = '\\';
1.307 schwarze 764: roffce_lines = 0;
765: roffce_node = NULL;
766: roffit_lines = 0;
767: roffit_macro = NULL;
1.67 kristaps 768: }
769:
770: void
771: roff_free(struct roff *r)
772: {
1.339 ! schwarze 773: int i;
! 774:
1.67 kristaps 775: roff_free1(r);
1.339 ! schwarze 776: for (i = 0; i < r->mstacksz; i++)
! 777: free(r->mstack[i].argv);
! 778: free(r->mstack);
1.295 schwarze 779: roffhash_free(r->reqtab);
1.67 kristaps 780: free(r);
781: }
782:
783: struct roff *
1.279 schwarze 784: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 785: {
786: struct roff *r;
787:
1.98 schwarze 788: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 789: r->parse = parse;
1.328 schwarze 790: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.199 schwarze 791: r->options = options;
1.227 schwarze 792: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 ! schwarze 793: r->mstackpos = -1;
1.82 kristaps 794: r->rstackpos = -1;
1.303 schwarze 795: r->escape = '\\';
1.277 schwarze 796: return r;
1.265 schwarze 797: }
798:
1.266 schwarze 799: /* --- syntax tree state data management ---------------------------------- */
800:
1.265 schwarze 801: static void
802: roff_man_free1(struct roff_man *man)
803: {
804:
1.266 schwarze 805: if (man->first != NULL)
806: roff_node_delete(man, man->first);
1.265 schwarze 807: free(man->meta.msec);
808: free(man->meta.vol);
809: free(man->meta.os);
810: free(man->meta.arch);
811: free(man->meta.title);
812: free(man->meta.name);
813: free(man->meta.date);
814: }
815:
816: static void
817: roff_man_alloc1(struct roff_man *man)
818: {
819:
820: memset(&man->meta, 0, sizeof(man->meta));
821: man->first = mandoc_calloc(1, sizeof(*man->first));
822: man->first->type = ROFFT_ROOT;
823: man->last = man->first;
824: man->last_es = NULL;
825: man->flags = 0;
826: man->macroset = MACROSET_NONE;
827: man->lastsec = man->lastnamed = SEC_NONE;
828: man->next = ROFF_NEXT_CHILD;
829: }
830:
831: void
832: roff_man_reset(struct roff_man *man)
833: {
834:
835: roff_man_free1(man);
836: roff_man_alloc1(man);
837: }
838:
839: void
840: roff_man_free(struct roff_man *man)
841: {
842:
843: roff_man_free1(man);
844: free(man);
845: }
846:
847: struct roff_man *
848: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.316 schwarze 849: const char *os_s, int quick)
1.265 schwarze 850: {
851: struct roff_man *man;
852:
853: man = mandoc_calloc(1, sizeof(*man));
854: man->parse = parse;
855: man->roff = roff;
1.316 schwarze 856: man->os_s = os_s;
1.265 schwarze 857: man->quick = quick;
858: roff_man_alloc1(man);
1.296 schwarze 859: roff->man = man;
1.277 schwarze 860: return man;
1.67 kristaps 861: }
862:
1.266 schwarze 863: /* --- syntax tree handling ----------------------------------------------- */
864:
865: struct roff_node *
866: roff_node_alloc(struct roff_man *man, int line, int pos,
867: enum roff_type type, int tok)
868: {
869: struct roff_node *n;
870:
871: n = mandoc_calloc(1, sizeof(*n));
872: n->line = line;
873: n->pos = pos;
874: n->tok = tok;
875: n->type = type;
876: n->sec = man->lastsec;
877:
878: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 879: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 880: else
1.285 schwarze 881: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 882: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 883: n->flags |= NODE_LINE;
1.266 schwarze 884: man->flags &= ~MDOC_NEWLINE;
885:
1.277 schwarze 886: return n;
1.266 schwarze 887: }
888:
889: void
890: roff_node_append(struct roff_man *man, struct roff_node *n)
891: {
892:
893: switch (man->next) {
894: case ROFF_NEXT_SIBLING:
1.281 schwarze 895: if (man->last->next != NULL) {
896: n->next = man->last->next;
897: man->last->next->prev = n;
898: } else
899: man->last->parent->last = n;
1.266 schwarze 900: man->last->next = n;
901: n->prev = man->last;
902: n->parent = man->last->parent;
903: break;
904: case ROFF_NEXT_CHILD:
1.287 schwarze 905: if (man->last->child != NULL) {
906: n->next = man->last->child;
907: man->last->child->prev = n;
908: } else
909: man->last->last = n;
1.266 schwarze 910: man->last->child = n;
911: n->parent = man->last;
912: break;
913: default:
914: abort();
915: }
1.282 schwarze 916: man->last = n;
1.266 schwarze 917:
918: switch (n->type) {
919: case ROFFT_HEAD:
920: n->parent->head = n;
921: break;
922: case ROFFT_BODY:
1.282 schwarze 923: if (n->end != ENDBODY_NOT)
924: return;
1.266 schwarze 925: n->parent->body = n;
926: break;
927: case ROFFT_TAIL:
928: n->parent->tail = n;
929: break;
930: default:
1.282 schwarze 931: return;
1.266 schwarze 932: }
1.282 schwarze 933:
934: /*
935: * Copy over the normalised-data pointer of our parent. Not
936: * everybody has one, but copying a null pointer is fine.
937: */
938:
939: n->norm = n->parent->norm;
940: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 941: }
942:
1.267 schwarze 943: void
944: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
945: {
946: struct roff_node *n;
947:
948: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
949: n->string = roff_strdup(man->roff, word);
950: roff_node_append(man, n);
1.286 schwarze 951: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 952: man->next = ROFF_NEXT_SIBLING;
953: }
954:
955: void
956: roff_word_append(struct roff_man *man, const char *word)
957: {
958: struct roff_node *n;
959: char *addstr, *newstr;
960:
961: n = man->last;
962: addstr = roff_strdup(man->roff, word);
963: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
964: free(addstr);
965: free(n->string);
966: n->string = newstr;
967: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 968: }
969:
970: void
971: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
972: {
973: struct roff_node *n;
974:
975: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
976: roff_node_append(man, n);
977: man->next = ROFF_NEXT_CHILD;
978: }
979:
980: struct roff_node *
981: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
982: {
983: struct roff_node *n;
984:
985: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
986: roff_node_append(man, n);
987: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 988: return n;
1.267 schwarze 989: }
990:
1.266 schwarze 991: struct roff_node *
992: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
993: {
994: struct roff_node *n;
995:
996: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
997: roff_node_append(man, n);
998: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 999: return n;
1.266 schwarze 1000: }
1001:
1002: struct roff_node *
1003: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1004: {
1005: struct roff_node *n;
1006:
1007: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1008: roff_node_append(man, n);
1009: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1010: return n;
1.267 schwarze 1011: }
1012:
1.321 schwarze 1013: static void
1014: roff_addtbl(struct roff_man *man, struct tbl_node *tbl)
1.267 schwarze 1015: {
1016: struct roff_node *n;
1.321 schwarze 1017: const struct tbl_span *span;
1.267 schwarze 1018:
1019: if (man->macroset == MACROSET_MAN)
1.302 schwarze 1020: man_breakscope(man, ROFF_TS);
1.321 schwarze 1021: while ((span = tbl_span(tbl)) != NULL) {
1022: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1023: n->span = span;
1024: roff_node_append(man, n);
1025: n->flags |= NODE_VALID | NODE_ENDED;
1026: man->next = ROFF_NEXT_SIBLING;
1027: }
1.266 schwarze 1028: }
1029:
1030: void
1031: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1032: {
1033:
1034: /* Adjust siblings. */
1035:
1036: if (n->prev)
1037: n->prev->next = n->next;
1038: if (n->next)
1039: n->next->prev = n->prev;
1040:
1041: /* Adjust parent. */
1042:
1043: if (n->parent != NULL) {
1044: if (n->parent->child == n)
1045: n->parent->child = n->next;
1046: if (n->parent->last == n)
1047: n->parent->last = n->prev;
1048: }
1049:
1050: /* Adjust parse point. */
1051:
1052: if (man == NULL)
1053: return;
1054: if (man->last == n) {
1055: if (n->prev == NULL) {
1056: man->last = n->parent;
1057: man->next = ROFF_NEXT_CHILD;
1058: } else {
1059: man->last = n->prev;
1060: man->next = ROFF_NEXT_SIBLING;
1061: }
1062: }
1063: if (man->first == n)
1064: man->first = NULL;
1065: }
1066:
1067: void
1068: roff_node_free(struct roff_node *n)
1069: {
1070:
1071: if (n->args != NULL)
1072: mdoc_argv_free(n->args);
1073: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1074: free(n->norm);
1.319 schwarze 1075: if (n->eqn != NULL)
1076: eqn_box_free(n->eqn);
1.266 schwarze 1077: free(n->string);
1078: free(n);
1079: }
1080:
1081: void
1082: roff_node_delete(struct roff_man *man, struct roff_node *n)
1083: {
1084:
1085: while (n->child != NULL)
1086: roff_node_delete(man, n->child);
1087: roff_node_unlink(man, n);
1088: roff_node_free(n);
1.269 schwarze 1089: }
1090:
1091: void
1092: deroff(char **dest, const struct roff_node *n)
1093: {
1094: char *cp;
1095: size_t sz;
1096:
1097: if (n->type != ROFFT_TEXT) {
1098: for (n = n->child; n != NULL; n = n->next)
1099: deroff(dest, n);
1100: return;
1101: }
1102:
1.288 schwarze 1103: /* Skip leading whitespace. */
1.269 schwarze 1104:
1.288 schwarze 1105: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1106: if (cp[0] == '\\' && cp[1] != '\0' &&
1107: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1108: cp++;
1.288 schwarze 1109: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1110: break;
1111: }
1112:
1.289 schwarze 1113: /* Skip trailing backslash. */
1114:
1115: sz = strlen(cp);
1.290 schwarze 1116: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1117: sz--;
1118:
1.269 schwarze 1119: /* Skip trailing whitespace. */
1120:
1.289 schwarze 1121: for (; sz; sz--)
1.269 schwarze 1122: if ( ! isspace((unsigned char)cp[sz-1]))
1123: break;
1124:
1125: /* Skip empty strings. */
1126:
1127: if (sz == 0)
1128: return;
1129:
1130: if (*dest == NULL) {
1131: *dest = mandoc_strndup(cp, sz);
1132: return;
1133: }
1134:
1135: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1136: free(*dest);
1137: *dest = cp;
1.266 schwarze 1138: }
1139:
1140: /* --- main functions of the roff parser ---------------------------------- */
1141:
1.94 kristaps 1142: /*
1.206 schwarze 1143: * In the current line, expand escape sequences that tend to get
1144: * used in numerical expressions and conditional requests.
1145: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1146: */
1.172 schwarze 1147: static enum rofferr
1.238 schwarze 1148: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1149: {
1.339 ! schwarze 1150: struct mctx *ctx; /* current macro call context */
1.208 schwarze 1151: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1152: struct roff_node *n; /* used for header comments */
1.205 schwarze 1153: const char *start; /* start of the string to process */
1.209 schwarze 1154: char *stesc; /* start of an escape sequence ('\\') */
1.328 schwarze 1155: char *ep; /* end of comment string */
1.108 schwarze 1156: const char *stnam; /* start of the name, after "[(*" */
1157: const char *cp; /* end of the name, e.g. before ']' */
1158: const char *res; /* the string to be substituted */
1.238 schwarze 1159: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1160: size_t maxl; /* expected length of the escape name */
1161: size_t naml; /* actual length of the escape name */
1.339 ! schwarze 1162: size_t asz; /* length of the replacement */
! 1163: size_t rsz; /* length of the rest of the string */
1.237 schwarze 1164: enum mandoc_esc esc; /* type of the escape sequence */
1165: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1166: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1167: int npos; /* position in numeric expression */
1.218 schwarze 1168: int arg_complete; /* argument not interrupted by eol */
1.339 ! schwarze 1169: int quote_args; /* true for \\$@, false for \\$* */
1.303 schwarze 1170: int done; /* no more input available */
1.315 schwarze 1171: int deftype; /* type of definition to paste */
1.323 schwarze 1172: int rcsid; /* kind of RCS id seen */
1.327 schwarze 1173: char sign; /* increment number register */
1.206 schwarze 1174: char term; /* character terminating the escape */
1.94 kristaps 1175:
1.303 schwarze 1176: /* Search forward for comments. */
1177:
1178: done = 0;
1179: start = buf->buf + pos;
1180: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1181: if (stesc[0] != r->escape || stesc[1] == '\0')
1182: continue;
1183: stesc++;
1184: if (*stesc != '"' && *stesc != '#')
1185: continue;
1.313 schwarze 1186:
1187: /* Comment found, look for RCS id. */
1188:
1.323 schwarze 1189: rcsid = 0;
1.313 schwarze 1190: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1191: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1192: cp += 8;
1193: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1194: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1195: cp += 7;
1196: }
1197: if (cp != NULL &&
1198: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1199: strchr(cp, '$') != NULL) {
1.323 schwarze 1200: if (r->man->meta.rcsids & rcsid)
1.314 schwarze 1201: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1202: ln, stesc + 1 - buf->buf, stesc + 1);
1.323 schwarze 1203: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1204: }
1.313 schwarze 1205:
1206: /* Handle trailing whitespace. */
1207:
1.328 schwarze 1208: ep = strchr(stesc--, '\0') - 1;
1209: if (*ep == '\n') {
1.303 schwarze 1210: done = 1;
1.328 schwarze 1211: ep--;
1.303 schwarze 1212: }
1.328 schwarze 1213: if (*ep == ' ' || *ep == '\t')
1.303 schwarze 1214: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1.328 schwarze 1215: ln, ep - buf->buf, NULL);
1216:
1217: /*
1218: * Save comments preceding the title macro
1219: * in the syntax tree.
1220: */
1221:
1222: if (r->format == 0) {
1223: while (*ep == ' ' || *ep == '\t')
1224: ep--;
1225: ep[1] = '\0';
1226: n = roff_node_alloc(r->man,
1227: ln, stesc + 1 - buf->buf,
1228: ROFFT_COMMENT, TOKEN_NONE);
1229: n->string = mandoc_strdup(stesc + 2);
1230: roff_node_append(r->man, n);
1231: n->flags |= NODE_VALID | NODE_ENDED;
1232: r->man->next = ROFF_NEXT_SIBLING;
1233: }
1234:
1.334 schwarze 1235: /* Line continuation with comment. */
1236:
1237: if (stesc[1] == '#') {
1238: *stesc = '\0';
1239: return ROFF_APPEND;
1240: }
1241:
1242: /* Discard normal comments. */
1.328 schwarze 1243:
1.335 schwarze 1244: while (stesc > start && stesc[-1] == ' ' &&
1245: (stesc == start + 1 || stesc[-2] != '\\'))
1.303 schwarze 1246: stesc--;
1247: *stesc = '\0';
1248: break;
1249: }
1250: if (stesc == start)
1251: return ROFF_CONT;
1252: stesc--;
1253:
1254: /* Notice the end of the input. */
1255:
1256: if (*stesc == '\n') {
1257: *stesc-- = '\0';
1258: done = 1;
1259: }
1260:
1.170 schwarze 1261: expand_count = 0;
1.303 schwarze 1262: while (stesc >= start) {
1.170 schwarze 1263:
1.205 schwarze 1264: /* Search backwards for the next backslash. */
1265:
1.303 schwarze 1266: if (*stesc != r->escape) {
1267: if (*stesc == '\\') {
1268: *stesc = '\0';
1269: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1270: buf->buf, stesc + 1) + 1;
1271: start = nbuf + pos;
1272: stesc = nbuf + (stesc - buf->buf);
1273: free(buf->buf);
1274: buf->buf = nbuf;
1275: }
1276: stesc--;
1.205 schwarze 1277: continue;
1.303 schwarze 1278: }
1.205 schwarze 1279:
1280: /* If it is escaped, skip it. */
1281:
1282: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1283: if (*cp != r->escape)
1.205 schwarze 1284: break;
1285:
1.238 schwarze 1286: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1287: while (stesc > cp)
1288: *stesc-- = '\\';
1.205 schwarze 1289: continue;
1.303 schwarze 1290: } else if (stesc[1] != '\0') {
1291: *stesc = '\\';
1292: } else {
1293: *stesc-- = '\0';
1294: if (done)
1295: continue;
1296: else
1297: return ROFF_APPEND;
1.205 schwarze 1298: }
1.108 schwarze 1299:
1.206 schwarze 1300: /* Decide whether to expand or to check only. */
1.108 schwarze 1301:
1.206 schwarze 1302: term = '\0';
1.205 schwarze 1303: cp = stesc + 1;
1.181 schwarze 1304: switch (*cp) {
1.207 schwarze 1305: case '*':
1.339 ! schwarze 1306: case '$':
1.181 schwarze 1307: res = NULL;
1308: break;
1.207 schwarze 1309: case 'B':
1310: case 'w':
1.206 schwarze 1311: term = cp[1];
1312: /* FALLTHROUGH */
1.207 schwarze 1313: case 'n':
1.327 schwarze 1314: sign = cp[1];
1315: if (sign == '+' || sign == '-')
1316: cp++;
1.181 schwarze 1317: res = ubuf;
1318: break;
1319: default:
1.237 schwarze 1320: esc = mandoc_escape(&cp, &stnam, &inaml);
1321: if (esc == ESCAPE_ERROR ||
1322: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1323: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1324: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1325: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1326: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1327: stesc--;
1.205 schwarze 1328: continue;
1.152 kristaps 1329: }
1330:
1.205 schwarze 1331: if (EXPAND_LIMIT < ++expand_count) {
1332: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1333: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1334: return ROFF_IGN;
1.205 schwarze 1335: }
1.108 schwarze 1336:
1337: /*
1338: * The third character decides the length
1.181 schwarze 1339: * of the name of the string or register.
1.108 schwarze 1340: * Save a pointer to the name.
1341: */
1342:
1.238 schwarze 1343: if (term == '\0') {
1.206 schwarze 1344: switch (*++cp) {
1.207 schwarze 1345: case '\0':
1.206 schwarze 1346: maxl = 0;
1347: break;
1.207 schwarze 1348: case '(':
1.206 schwarze 1349: cp++;
1350: maxl = 2;
1351: break;
1.207 schwarze 1352: case '[':
1.206 schwarze 1353: cp++;
1354: term = ']';
1355: maxl = 0;
1356: break;
1357: default:
1358: maxl = 1;
1359: break;
1360: }
1361: } else {
1362: cp += 2;
1.94 kristaps 1363: maxl = 0;
1364: }
1.108 schwarze 1365: stnam = cp;
1.94 kristaps 1366:
1.108 schwarze 1367: /* Advance to the end of the name. */
1.94 kristaps 1368:
1.253 schwarze 1369: naml = 0;
1.218 schwarze 1370: arg_complete = 1;
1.253 schwarze 1371: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1372: if (*cp == '\0') {
1.219 schwarze 1373: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1374: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1375: arg_complete = 0;
1.206 schwarze 1376: break;
1.153 kristaps 1377: }
1.238 schwarze 1378: if (maxl == 0 && *cp == term) {
1.206 schwarze 1379: cp++;
1.253 schwarze 1380: break;
1381: }
1382: if (*cp++ != '\\' || stesc[1] != 'w') {
1383: naml++;
1384: continue;
1385: }
1386: switch (mandoc_escape(&cp, NULL, NULL)) {
1387: case ESCAPE_SPECIAL:
1388: case ESCAPE_UNICODE:
1389: case ESCAPE_NUMBERED:
1390: case ESCAPE_OVERSTRIKE:
1391: naml++;
1392: break;
1393: default:
1.94 kristaps 1394: break;
1.206 schwarze 1395: }
1.94 kristaps 1396: }
1397:
1.108 schwarze 1398: /*
1399: * Retrieve the replacement string; if it is
1400: * undefined, resume searching for escapes.
1401: */
1402:
1.206 schwarze 1403: switch (stesc[1]) {
1.207 schwarze 1404: case '*':
1.315 schwarze 1405: if (arg_complete) {
1406: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1407: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1408:
1409: /*
1410: * If not overriden, let \*(.T
1411: * through to the formatters.
1412: */
1413:
1414: if (res == NULL && naml == 2 &&
1415: stnam[0] == '.' && stnam[1] == 'T') {
1416: roff_setstrn(&r->strtab,
1417: ".T", 2, NULL, 0, 0);
1418: stesc--;
1419: continue;
1420: }
1.315 schwarze 1421: }
1.206 schwarze 1422: break;
1.339 ! schwarze 1423: case '$':
! 1424: if (r->mstackpos < 0) {
! 1425: mandoc_vmsg(MANDOCERR_ARG_UNDEF,
! 1426: r->parse, ln, (int)(stesc - buf->buf),
! 1427: "%.3s", stesc);
! 1428: break;
! 1429: }
! 1430: ctx = r->mstack + r->mstackpos;
! 1431: npos = stesc[2] - '1';
! 1432: if (npos >= 0 && npos <= 8) {
! 1433: res = npos < ctx->argc ?
! 1434: ctx->argv[npos] : "";
! 1435: break;
! 1436: }
! 1437: if (stesc[2] == '*')
! 1438: quote_args = 0;
! 1439: else if (stesc[2] == '@')
! 1440: quote_args = 1;
! 1441: else {
! 1442: mandoc_vmsg(MANDOCERR_ARG_NONUM,
! 1443: r->parse, ln, (int)(stesc - buf->buf),
! 1444: "%.3s", stesc);
! 1445: break;
! 1446: }
! 1447: asz = 0;
! 1448: for (npos = 0; npos < ctx->argc; npos++) {
! 1449: if (npos)
! 1450: asz++; /* blank */
! 1451: if (quote_args)
! 1452: asz += 2; /* quotes */
! 1453: asz += strlen(ctx->argv[npos]);
! 1454: }
! 1455: if (asz != 3) {
! 1456: rsz = buf->sz - (stesc - buf->buf) - 3;
! 1457: if (asz < 3)
! 1458: memmove(stesc + asz, stesc + 3, rsz);
! 1459: buf->sz += asz - 3;
! 1460: nbuf = mandoc_realloc(buf->buf, buf->sz);
! 1461: start = nbuf + pos;
! 1462: stesc = nbuf + (stesc - buf->buf);
! 1463: buf->buf = nbuf;
! 1464: if (asz > 3)
! 1465: memmove(stesc + asz, stesc + 3, rsz);
! 1466: }
! 1467: for (npos = 0; npos < ctx->argc; npos++) {
! 1468: if (npos)
! 1469: *stesc++ = ' ';
! 1470: if (quote_args)
! 1471: *stesc++ = '"';
! 1472: cp = ctx->argv[npos];
! 1473: while (*cp != '\0')
! 1474: *stesc++ = *cp++;
! 1475: if (quote_args)
! 1476: *stesc++ = '"';
! 1477: }
! 1478: continue;
1.207 schwarze 1479: case 'B':
1.206 schwarze 1480: npos = 0;
1.218 schwarze 1481: ubuf[0] = arg_complete &&
1.261 schwarze 1482: roff_evalnum(r, ln, stnam, &npos,
1483: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1484: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1485: ubuf[1] = '\0';
1486: break;
1.207 schwarze 1487: case 'n':
1.218 schwarze 1488: if (arg_complete)
1489: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1490: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1491: else
1492: ubuf[0] = '\0';
1.206 schwarze 1493: break;
1.207 schwarze 1494: case 'w':
1.218 schwarze 1495: /* use even incomplete args */
1.208 schwarze 1496: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1497: 24 * (int)naml);
1498: break;
1499: }
1.94 kristaps 1500:
1.238 schwarze 1501: if (res == NULL) {
1.339 ! schwarze 1502: if (stesc[1] == '*')
! 1503: mandoc_vmsg(MANDOCERR_STR_UNDEF,
! 1504: r->parse, ln, (int)(stesc - buf->buf),
! 1505: "%.*s", (int)naml, stnam);
1.142 kristaps 1506: res = "";
1.246 schwarze 1507: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1508: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1509: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1510: return ROFF_IGN;
1.94 kristaps 1511: }
1512:
1.108 schwarze 1513: /* Replace the escape sequence by the string. */
1514:
1.209 schwarze 1515: *stesc = '\0';
1.238 schwarze 1516: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1517: buf->buf, res, cp) + 1;
1.94 kristaps 1518:
1.205 schwarze 1519: /* Prepare for the next replacement. */
1.94 kristaps 1520:
1.205 schwarze 1521: start = nbuf + pos;
1.238 schwarze 1522: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1523: free(buf->buf);
1524: buf->buf = nbuf;
1.154 kristaps 1525: }
1.277 schwarze 1526: return ROFF_CONT;
1.154 kristaps 1527: }
1528:
1529: /*
1.275 schwarze 1530: * Process text streams.
1.154 kristaps 1531: */
1532: static enum rofferr
1.305 schwarze 1533: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1534: {
1535: size_t sz;
1536: const char *start;
1.178 schwarze 1537: char *p;
1538: int isz;
1.154 kristaps 1539: enum mandoc_esc esc;
1540:
1.275 schwarze 1541: /* Spring the input line trap. */
1542:
1543: if (roffit_lines == 1) {
1544: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1545: free(buf->buf);
1546: buf->buf = p;
1547: buf->sz = isz + 1;
1548: *offs = 0;
1549: free(roffit_macro);
1550: roffit_lines = 0;
1.277 schwarze 1551: return ROFF_REPARSE;
1.275 schwarze 1552: } else if (roffit_lines > 1)
1553: --roffit_lines;
1554:
1.305 schwarze 1555: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1556: if (roffce_lines < 1) {
1557: r->man->last = roffce_node;
1558: r->man->next = ROFF_NEXT_SIBLING;
1559: roffce_lines = 0;
1560: roffce_node = NULL;
1561: } else
1562: roffce_lines--;
1563: }
1564:
1.275 schwarze 1565: /* Convert all breakable hyphens into ASCII_HYPH. */
1566:
1.238 schwarze 1567: start = p = buf->buf + pos;
1.154 kristaps 1568:
1.238 schwarze 1569: while (*p != '\0') {
1.154 kristaps 1570: sz = strcspn(p, "-\\");
1571: p += sz;
1572:
1.238 schwarze 1573: if (*p == '\0')
1.159 kristaps 1574: break;
1575:
1.238 schwarze 1576: if (*p == '\\') {
1.154 kristaps 1577: /* Skip over escapes. */
1578: p++;
1.189 schwarze 1579: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1580: if (esc == ESCAPE_ERROR)
1.154 kristaps 1581: break;
1.264 schwarze 1582: while (*p == '-')
1583: p++;
1.155 kristaps 1584: continue;
1.159 kristaps 1585: } else if (p == start) {
1.158 kristaps 1586: p++;
1.155 kristaps 1587: continue;
1.158 kristaps 1588: }
1.155 kristaps 1589:
1.171 schwarze 1590: if (isalpha((unsigned char)p[-1]) &&
1591: isalpha((unsigned char)p[1]))
1.155 kristaps 1592: *p = ASCII_HYPH;
1593: p++;
1.94 kristaps 1594: }
1.277 schwarze 1595: return ROFF_CONT;
1.94 kristaps 1596: }
1597:
1.67 kristaps 1598: enum rofferr
1.238 schwarze 1599: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1600: {
1.294 schwarze 1601: enum roff_tok t;
1.109 kristaps 1602: enum rofferr e;
1.238 schwarze 1603: int pos; /* parse point */
1.243 schwarze 1604: int spos; /* saved parse point for messages */
1.238 schwarze 1605: int ppos; /* original offset in buf->buf */
1606: int ctl; /* macro line (boolean) */
1607:
1608: ppos = pos = *offs;
1.79 kristaps 1609:
1.230 schwarze 1610: /* Handle in-line equation delimiters. */
1611:
1.236 schwarze 1612: if (r->tbl == NULL &&
1613: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1614: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1615: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1616: if (e == ROFF_REPARSE)
1.277 schwarze 1617: return e;
1.230 schwarze 1618: assert(e == ROFF_CONT);
1619: }
1620:
1621: /* Expand some escape sequences. */
1.94 kristaps 1622:
1.238 schwarze 1623: e = roff_res(r, buf, ln, pos);
1.303 schwarze 1624: if (e == ROFF_IGN || e == ROFF_APPEND)
1.277 schwarze 1625: return e;
1.238 schwarze 1626: assert(e == ROFF_CONT);
1.94 kristaps 1627:
1.238 schwarze 1628: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1629:
1.94 kristaps 1630: /*
1.79 kristaps 1631: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1632: * text through the macro's filter.
1633: * Equations process all content themselves.
1634: * Tables process almost all content themselves, but we want
1635: * to warn about macros before passing it there.
1.79 kristaps 1636: */
1.74 kristaps 1637:
1.252 schwarze 1638: if (r->last != NULL && ! ctl) {
1.78 kristaps 1639: t = r->last->tok;
1.238 schwarze 1640: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1641: if (e == ROFF_IGN)
1.277 schwarze 1642: return e;
1.294 schwarze 1643: assert(e == ROFF_CONT);
1.182 schwarze 1644: }
1.319 schwarze 1645: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1646: eqn_read(r->eqn, buf->buf + ppos);
1647: return ROFF_IGN;
1648: }
1.321 schwarze 1649: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1650: tbl_read(r->tbl, ln, buf->buf, ppos);
1651: roff_addtbl(r->man, r->tbl);
1652: return ROFF_IGN;
1653: }
1.252 schwarze 1654: if ( ! ctl)
1.305 schwarze 1655: return roff_parsetext(r, buf, pos, offs);
1.228 schwarze 1656:
1657: /* Skip empty request lines. */
1658:
1.238 schwarze 1659: if (buf->buf[pos] == '"') {
1.228 schwarze 1660: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1661: ln, pos, NULL);
1.277 schwarze 1662: return ROFF_IGN;
1.238 schwarze 1663: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1664: return ROFF_IGN;
1.67 kristaps 1665:
1.79 kristaps 1666: /*
1667: * If a scope is open, go to the child handler for that macro,
1668: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1669: * Don't do so if an equation is open.
1.79 kristaps 1670: */
1.78 kristaps 1671:
1.79 kristaps 1672: if (r->last) {
1673: t = r->last->tok;
1.277 schwarze 1674: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1675: }
1.78 kristaps 1676:
1.243 schwarze 1677: /* No scope is open. This is a new request or macro. */
1678:
1679: spos = pos;
1680: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1681:
1682: /* Tables ignore most macros. */
1683:
1.308 schwarze 1684: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1685: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.243 schwarze 1686: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1687: ln, pos, buf->buf + spos);
1.308 schwarze 1688: if (t != TOKEN_NONE)
1.277 schwarze 1689: return ROFF_IGN;
1.257 schwarze 1690: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1691: pos++;
1.291 schwarze 1692: while (buf->buf[pos] == ' ')
1.257 schwarze 1693: pos++;
1.321 schwarze 1694: tbl_read(r->tbl, ln, buf->buf, pos);
1695: roff_addtbl(r->man, r->tbl);
1696: return ROFF_IGN;
1.243 schwarze 1697: }
1698:
1.305 schwarze 1699: /* For now, let high level macros abort .ce mode. */
1700:
1701: if (ctl && roffce_node != NULL &&
1.324 schwarze 1702: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1703: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1704: r->man->last = roffce_node;
1705: r->man->next = ROFF_NEXT_SIBLING;
1706: roffce_lines = 0;
1707: roffce_node = NULL;
1708: }
1709:
1.79 kristaps 1710: /*
1.243 schwarze 1711: * This is neither a roff request nor a user-defined macro.
1712: * Let the standard macro set parsers handle it.
1.79 kristaps 1713: */
1.67 kristaps 1714:
1.294 schwarze 1715: if (t == TOKEN_NONE)
1.277 schwarze 1716: return ROFF_CONT;
1.243 schwarze 1717:
1718: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1719:
1.296 schwarze 1720: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1721: }
1722:
1.339 ! schwarze 1723: /*
! 1724: * Internal interface function to tell the roff parser that execution
! 1725: * of the current macro ended. This is required because macro
! 1726: * definitions usually do not end with a .return request.
! 1727: */
! 1728: void
! 1729: roff_userret(struct roff *r)
! 1730: {
! 1731: struct mctx *ctx;
! 1732: int i;
! 1733:
! 1734: assert(r->mstackpos >= 0);
! 1735: ctx = r->mstack + r->mstackpos;
! 1736: for (i = 0; i < ctx->argc; i++)
! 1737: free(ctx->argv[i]);
! 1738: ctx->argc = 0;
! 1739: r->mstackpos--;
! 1740: }
! 1741:
1.117 kristaps 1742: void
1.74 kristaps 1743: roff_endparse(struct roff *r)
1744: {
1.321 schwarze 1745: if (r->last != NULL)
1.221 schwarze 1746: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1747: r->last->line, r->last->col,
1.295 schwarze 1748: roff_name[r->last->tok]);
1.117 kristaps 1749:
1.321 schwarze 1750: if (r->eqn != NULL) {
1.221 schwarze 1751: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.319 schwarze 1752: r->eqn->node->line, r->eqn->node->pos, "EQ");
1753: eqn_parse(r->eqn);
1754: r->eqn = NULL;
1.125 kristaps 1755: }
1756:
1.321 schwarze 1757: if (r->tbl != NULL) {
1.221 schwarze 1758: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1759: r->tbl->line, r->tbl->pos, "TS");
1.321 schwarze 1760: tbl_end(r->tbl);
1761: r->tbl = NULL;
1.117 kristaps 1762: }
1.67 kristaps 1763: }
1764:
1765: /*
1766: * Parse a roff node's type from the input buffer. This must be in the
1767: * form of ".foo xxx" in the usual way.
1768: */
1.294 schwarze 1769: static enum roff_tok
1.214 schwarze 1770: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1771: {
1.214 schwarze 1772: char *cp;
1.106 kristaps 1773: const char *mac;
1774: size_t maclen;
1.315 schwarze 1775: int deftype;
1.294 schwarze 1776: enum roff_tok t;
1.67 kristaps 1777:
1.214 schwarze 1778: cp = buf + *pos;
1779:
1780: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1781: return TOKEN_NONE;
1.67 kristaps 1782:
1.214 schwarze 1783: mac = cp;
1784: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1785:
1.315 schwarze 1786: deftype = ROFFDEF_USER | ROFFDEF_REN;
1787: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1788: switch (deftype) {
1789: case ROFFDEF_USER:
1790: t = ROFF_USERDEF;
1791: break;
1792: case ROFFDEF_REN:
1793: t = ROFF_RENAMED;
1794: break;
1795: default:
1796: t = roffhash_find(r->reqtab, mac, maclen);
1797: break;
1798: }
1.294 schwarze 1799: if (t != TOKEN_NONE)
1.214 schwarze 1800: *pos = cp - buf;
1.325 schwarze 1801: else if (deftype == ROFFDEF_UNDEF) {
1802: /* Using an undefined macro defines it to be empty. */
1803: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1804: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1805: }
1.277 schwarze 1806: return t;
1.67 kristaps 1807: }
1808:
1.266 schwarze 1809: /* --- handling of request blocks ----------------------------------------- */
1810:
1.67 kristaps 1811: static enum rofferr
1.76 kristaps 1812: roff_cblock(ROFF_ARGS)
1.67 kristaps 1813: {
1814:
1.79 kristaps 1815: /*
1816: * A block-close `..' should only be invoked as a child of an
1817: * ignore macro, otherwise raise a warning and just ignore it.
1818: */
1819:
1.238 schwarze 1820: if (r->last == NULL) {
1.221 schwarze 1821: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1822: ln, ppos, "..");
1.277 schwarze 1823: return ROFF_IGN;
1.76 kristaps 1824: }
1.67 kristaps 1825:
1.81 kristaps 1826: switch (r->last->tok) {
1.207 schwarze 1827: case ROFF_am:
1.220 schwarze 1828: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1829: case ROFF_ami:
1830: case ROFF_de:
1.108 schwarze 1831: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1832: case ROFF_dei:
1833: case ROFF_ig:
1.81 kristaps 1834: break;
1835: default:
1.221 schwarze 1836: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1837: ln, ppos, "..");
1.277 schwarze 1838: return ROFF_IGN;
1.76 kristaps 1839: }
1.67 kristaps 1840:
1.238 schwarze 1841: if (buf->buf[pos] != '\0')
1.217 schwarze 1842: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1843: ".. %s", buf->buf + pos);
1.71 kristaps 1844:
1845: roffnode_pop(r);
1.76 kristaps 1846: roffnode_cleanscope(r);
1.277 schwarze 1847: return ROFF_IGN;
1.71 kristaps 1848:
1.67 kristaps 1849: }
1850:
1.76 kristaps 1851: static void
1852: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1853: {
1854:
1.76 kristaps 1855: while (r->last) {
1.173 schwarze 1856: if (--r->last->endspan != 0)
1.76 kristaps 1857: break;
1858: roffnode_pop(r);
1859: }
1.67 kristaps 1860: }
1861:
1.195 schwarze 1862: static void
1863: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1864: {
1865:
1.76 kristaps 1866: if (NULL == r->last) {
1.221 schwarze 1867: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1868: ln, ppos, "\\}");
1.195 schwarze 1869: return;
1.76 kristaps 1870: }
1871:
1.82 kristaps 1872: switch (r->last->tok) {
1.207 schwarze 1873: case ROFF_el:
1874: case ROFF_ie:
1875: case ROFF_if:
1.82 kristaps 1876: break;
1877: default:
1.221 schwarze 1878: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1879: ln, ppos, "\\}");
1.195 schwarze 1880: return;
1.75 kristaps 1881: }
1882:
1.76 kristaps 1883: if (r->last->endspan > -1) {
1.221 schwarze 1884: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1885: ln, ppos, "\\}");
1.195 schwarze 1886: return;
1.76 kristaps 1887: }
1888:
1.75 kristaps 1889: roffnode_pop(r);
1.76 kristaps 1890: roffnode_cleanscope(r);
1.195 schwarze 1891: return;
1.76 kristaps 1892: }
1893:
1894: static enum rofferr
1.80 kristaps 1895: roff_block(ROFF_ARGS)
1.76 kristaps 1896: {
1.315 schwarze 1897: const char *name, *value;
1898: char *call, *cp, *iname, *rname;
1899: size_t csz, namesz, rsz;
1900: int deftype;
1.106 kristaps 1901:
1.220 schwarze 1902: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1903:
1.238 schwarze 1904: if (tok == ROFF_de1)
1.220 schwarze 1905: tok = ROFF_de;
1.251 schwarze 1906: else if (tok == ROFF_dei1)
1907: tok = ROFF_dei;
1.238 schwarze 1908: else if (tok == ROFF_am1)
1.220 schwarze 1909: tok = ROFF_am;
1.251 schwarze 1910: else if (tok == ROFF_ami1)
1911: tok = ROFF_ami;
1.220 schwarze 1912:
1913: /* Parse the macro name argument. */
1914:
1.238 schwarze 1915: cp = buf->buf + pos;
1916: if (tok == ROFF_ig) {
1.220 schwarze 1917: iname = NULL;
1918: namesz = 0;
1919: } else {
1920: iname = cp;
1921: namesz = roff_getname(r, &cp, ln, ppos);
1922: iname[namesz] = '\0';
1923: }
1.107 kristaps 1924:
1.220 schwarze 1925: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1926:
1.238 schwarze 1927: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1928: deftype = ROFFDEF_USER;
1929: name = roff_getstrn(r, iname, namesz, &deftype);
1930: if (name == NULL) {
1.220 schwarze 1931: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1932: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1933: "%.*s", (int)namesz, iname);
1934: namesz = 0;
1935: } else
1936: namesz = strlen(name);
1937: } else
1938: name = iname;
1.107 kristaps 1939:
1.238 schwarze 1940: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1941: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1942: ln, ppos, roff_name[tok]);
1.277 schwarze 1943: return ROFF_IGN;
1.220 schwarze 1944: }
1.80 kristaps 1945:
1.106 kristaps 1946: roffnode_push(r, tok, name, ln, ppos);
1947:
1948: /*
1949: * At the beginning of a `de' macro, clear the existing string
1950: * with the same name, if there is one. New content will be
1.193 schwarze 1951: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1952: */
1.107 kristaps 1953:
1.311 schwarze 1954: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 1955: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 1956: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 1957: } else if (tok == ROFF_am || tok == ROFF_ami) {
1958: deftype = ROFFDEF_ANY;
1959: value = roff_getstrn(r, iname, namesz, &deftype);
1960: switch (deftype) { /* Before appending, ... */
1961: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1962: roff_setstrn(&r->strtab, name, namesz,
1963: value, strlen(value), 0);
1964: break;
1965: case ROFFDEF_REN: /* call original standard macro. */
1966: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1967: (int)strlen(value), value);
1968: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1969: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1970: free(call);
1971: break;
1972: case ROFFDEF_STD: /* rename and call standard macro. */
1973: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1974: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1975: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1976: (int)rsz, rname);
1977: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1978: free(call);
1979: free(rname);
1980: break;
1981: default:
1982: break;
1983: }
1.311 schwarze 1984: }
1.76 kristaps 1985:
1.238 schwarze 1986: if (*cp == '\0')
1.277 schwarze 1987: return ROFF_IGN;
1.78 kristaps 1988:
1.220 schwarze 1989: /* Get the custom end marker. */
1.107 kristaps 1990:
1.220 schwarze 1991: iname = cp;
1.213 schwarze 1992: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1993:
1994: /* Resolve the end marker if it is indirect. */
1995:
1.238 schwarze 1996: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1997: deftype = ROFFDEF_USER;
1998: name = roff_getstrn(r, iname, namesz, &deftype);
1999: if (name == NULL) {
1.220 schwarze 2000: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 2001: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 2002: "%.*s", (int)namesz, iname);
2003: namesz = 0;
2004: } else
2005: namesz = strlen(name);
2006: } else
2007: name = iname;
2008:
1.213 schwarze 2009: if (namesz)
2010: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2011:
1.238 schwarze 2012: if (*cp != '\0')
1.217 schwarze 2013: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 2014: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2015:
1.277 schwarze 2016: return ROFF_IGN;
1.78 kristaps 2017: }
2018:
2019: static enum rofferr
1.80 kristaps 2020: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2021: {
1.294 schwarze 2022: enum roff_tok t;
1.79 kristaps 2023: int i, j;
2024:
2025: /*
2026: * First check whether a custom macro exists at this level. If
2027: * it does, then check against it. This is some of groff's
2028: * stranger behaviours. If we encountered a custom end-scope
2029: * tag and that tag also happens to be a "real" macro, then we
2030: * need to try interpreting it again as a real macro. If it's
2031: * not, then return ignore. Else continue.
2032: */
2033:
2034: if (r->last->end) {
1.130 kristaps 2035: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2036: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2037: break;
2038:
1.238 schwarze 2039: if (r->last->end[j] == '\0' &&
2040: (buf->buf[i] == '\0' ||
2041: buf->buf[i] == ' ' ||
2042: buf->buf[i] == '\t')) {
1.79 kristaps 2043: roffnode_pop(r);
2044: roffnode_cleanscope(r);
2045:
1.238 schwarze 2046: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2047: i++;
2048:
2049: pos = i;
1.238 schwarze 2050: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2051: TOKEN_NONE)
1.277 schwarze 2052: return ROFF_RERUN;
2053: return ROFF_IGN;
1.79 kristaps 2054: }
2055: }
2056:
2057: /*
2058: * If we have no custom end-query or lookup failed, then try
2059: * pulling it out of the hashtable.
2060: */
2061:
1.238 schwarze 2062: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 2063:
1.238 schwarze 2064: if (t != ROFF_cblock) {
2065: if (tok != ROFF_ig)
2066: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 2067: return ROFF_IGN;
1.106 kristaps 2068: }
1.79 kristaps 2069:
1.277 schwarze 2070: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2071: }
2072:
2073: static enum rofferr
1.80 kristaps 2074: roff_block_text(ROFF_ARGS)
1.78 kristaps 2075: {
2076:
1.238 schwarze 2077: if (tok != ROFF_ig)
2078: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2079:
1.277 schwarze 2080: return ROFF_IGN;
1.78 kristaps 2081: }
2082:
2083: static enum rofferr
1.82 kristaps 2084: roff_cond_sub(ROFF_ARGS)
2085: {
1.294 schwarze 2086: enum roff_tok t;
1.139 kristaps 2087: char *ep;
1.198 schwarze 2088: int rr;
1.82 kristaps 2089:
2090: rr = r->last->rule;
1.139 kristaps 2091: roffnode_cleanscope(r);
1.144 kristaps 2092:
1.196 schwarze 2093: /*
2094: * If `\}' occurs on a macro line without a preceding macro,
2095: * drop the line completely.
2096: */
2097:
1.238 schwarze 2098: ep = buf->buf + pos;
2099: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 2100: rr = 0;
1.196 schwarze 2101:
1.177 schwarze 2102: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 2103:
1.238 schwarze 2104: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2105: switch (ep[1]) {
2106: case '}':
2107: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2108: roff_ccond(r, ln, ep - buf->buf);
2109: break;
2110: case '\0':
2111: ++ep;
2112: break;
2113: default:
2114: ep += 2;
2115: break;
1.197 schwarze 2116: }
1.177 schwarze 2117: }
1.318 schwarze 2118:
2119: /*
2120: * Fully handle known macros when they are structurally
2121: * required or when the conditional evaluated to true.
2122: */
2123:
2124: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2125: return t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT)
2126: ? (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) : rr
2127: ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 2128: }
2129:
2130: static enum rofferr
2131: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2132: {
1.140 kristaps 2133: char *ep;
1.198 schwarze 2134: int rr;
1.82 kristaps 2135:
2136: rr = r->last->rule;
1.140 kristaps 2137: roffnode_cleanscope(r);
1.82 kristaps 2138:
1.238 schwarze 2139: ep = buf->buf + pos;
2140: while ((ep = strchr(ep, '\\')) != NULL) {
2141: if (*(++ep) == '}') {
1.197 schwarze 2142: *ep = '&';
1.238 schwarze 2143: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 2144: }
1.247 schwarze 2145: if (*ep != '\0')
2146: ++ep;
1.78 kristaps 2147: }
1.277 schwarze 2148: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 2149: }
2150:
1.266 schwarze 2151: /* --- handling of numeric and conditional expressions -------------------- */
2152:
1.204 schwarze 2153: /*
2154: * Parse a single signed integer number. Stop at the first non-digit.
2155: * If there is at least one digit, return success and advance the
2156: * parse point, else return failure and let the parse point unchanged.
2157: * Ignore overflows, treat them just like the C language.
2158: */
1.184 schwarze 2159: static int
1.261 schwarze 2160: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2161: {
1.261 schwarze 2162: int myres, scaled, n, p;
1.206 schwarze 2163:
2164: if (NULL == res)
2165: res = &myres;
1.184 schwarze 2166:
2167: p = *pos;
2168: n = v[p] == '-';
1.261 schwarze 2169: if (n || v[p] == '+')
1.184 schwarze 2170: p++;
2171:
1.261 schwarze 2172: if (flags & ROFFNUM_WHITE)
2173: while (isspace((unsigned char)v[p]))
2174: p++;
2175:
1.184 schwarze 2176: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2177: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2178: if (p == *pos + n)
2179: return 0;
2180:
2181: if (n)
2182: *res = -*res;
2183:
1.254 schwarze 2184: /* Each number may be followed by one optional scaling unit. */
2185:
2186: switch (v[p]) {
2187: case 'f':
1.261 schwarze 2188: scaled = *res * 65536;
1.254 schwarze 2189: break;
2190: case 'i':
1.261 schwarze 2191: scaled = *res * 240;
1.254 schwarze 2192: break;
2193: case 'c':
1.261 schwarze 2194: scaled = *res * 240 / 2.54;
1.254 schwarze 2195: break;
2196: case 'v':
2197: case 'P':
1.261 schwarze 2198: scaled = *res * 40;
1.254 schwarze 2199: break;
2200: case 'm':
2201: case 'n':
1.261 schwarze 2202: scaled = *res * 24;
1.254 schwarze 2203: break;
2204: case 'p':
1.261 schwarze 2205: scaled = *res * 10 / 3;
1.254 schwarze 2206: break;
2207: case 'u':
1.261 schwarze 2208: scaled = *res;
1.254 schwarze 2209: break;
2210: case 'M':
1.261 schwarze 2211: scaled = *res * 6 / 25;
1.254 schwarze 2212: break;
2213: default:
1.261 schwarze 2214: scaled = *res;
1.254 schwarze 2215: p--;
2216: break;
2217: }
1.261 schwarze 2218: if (flags & ROFFNUM_SCALE)
2219: *res = scaled;
1.254 schwarze 2220:
2221: *pos = p + 1;
1.277 schwarze 2222: return 1;
1.184 schwarze 2223: }
2224:
1.198 schwarze 2225: /*
2226: * Evaluate a string comparison condition.
2227: * The first character is the delimiter.
2228: * Succeed if the string up to its second occurrence
2229: * matches the string up to its third occurence.
2230: * Advance the cursor after the third occurrence
2231: * or lacking that, to the end of the line.
2232: */
2233: static int
2234: roff_evalstrcond(const char *v, int *pos)
2235: {
2236: const char *s1, *s2, *s3;
2237: int match;
2238:
2239: match = 0;
2240: s1 = v + *pos; /* initial delimiter */
2241: s2 = s1 + 1; /* for scanning the first string */
2242: s3 = strchr(s2, *s1); /* for scanning the second string */
2243:
2244: if (NULL == s3) /* found no middle delimiter */
2245: goto out;
2246:
2247: while ('\0' != *++s3) {
2248: if (*s2 != *s3) { /* mismatch */
2249: s3 = strchr(s3, *s1);
2250: break;
2251: }
2252: if (*s3 == *s1) { /* found the final delimiter */
2253: match = 1;
2254: break;
2255: }
2256: s2++;
2257: }
2258:
2259: out:
2260: if (NULL == s3)
2261: s3 = strchr(s2, '\0');
1.242 schwarze 2262: else if (*s3 != '\0')
1.198 schwarze 2263: s3++;
2264: *pos = s3 - v;
1.277 schwarze 2265: return match;
1.198 schwarze 2266: }
2267:
1.204 schwarze 2268: /*
2269: * Evaluate an optionally negated single character, numerical,
2270: * or string condition.
2271: */
1.198 schwarze 2272: static int
1.271 schwarze 2273: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2274: {
1.336 schwarze 2275: const char *start, *end;
2276: char *cp, *name;
2277: size_t sz;
2278: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2279:
1.198 schwarze 2280: if ('!' == v[*pos]) {
2281: wanttrue = 0;
2282: (*pos)++;
2283: } else
2284: wanttrue = 1;
2285:
1.88 kristaps 2286: switch (v[*pos]) {
1.240 schwarze 2287: case '\0':
1.277 schwarze 2288: return 0;
1.207 schwarze 2289: case 'n':
2290: case 'o':
1.88 kristaps 2291: (*pos)++;
1.277 schwarze 2292: return wanttrue;
1.207 schwarze 2293: case 'e':
2294: case 't':
1.239 schwarze 2295: case 'v':
1.88 kristaps 2296: (*pos)++;
1.277 schwarze 2297: return !wanttrue;
1.336 schwarze 2298: case 'c':
2299: do {
2300: (*pos)++;
2301: } while (v[*pos] == ' ');
2302:
2303: /*
2304: * Quirk for groff compatibility:
2305: * The horizontal tab is neither available nor unavailable.
2306: */
2307:
2308: if (v[*pos] == '\t') {
2309: (*pos)++;
2310: return 0;
2311: }
2312:
2313: /* Printable ASCII characters are available. */
2314:
2315: if (v[*pos] != '\\') {
2316: (*pos)++;
2317: return wanttrue;
2318: }
2319:
2320: end = v + ++*pos;
2321: switch (mandoc_escape(&end, &start, &len)) {
2322: case ESCAPE_SPECIAL:
2323: istrue = mchars_spec2cp(start, len) != -1;
2324: break;
2325: case ESCAPE_UNICODE:
2326: istrue = 1;
2327: break;
2328: case ESCAPE_NUMBERED:
2329: istrue = mchars_num2char(start, len) != -1;
2330: break;
2331: default:
2332: istrue = !wanttrue;
2333: break;
2334: }
2335: *pos = end - v;
2336: return istrue == wanttrue;
1.310 schwarze 2337: case 'd':
1.271 schwarze 2338: case 'r':
1.310 schwarze 2339: cp = v + *pos + 1;
2340: while (*cp == ' ')
2341: cp++;
2342: name = cp;
2343: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2344: if (sz == 0)
2345: istrue = 0;
2346: else if (v[*pos] == 'r')
2347: istrue = roff_hasregn(r, name, sz);
2348: else {
2349: deftype = ROFFDEF_ANY;
2350: roff_getstrn(r, name, sz, &deftype);
2351: istrue = !!deftype;
2352: }
1.271 schwarze 2353: *pos = cp - v;
1.310 schwarze 2354: return istrue == wanttrue;
1.88 kristaps 2355: default:
2356: break;
2357: }
2358:
1.241 schwarze 2359: savepos = *pos;
1.261 schwarze 2360: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2361: return (number > 0) == wanttrue;
1.241 schwarze 2362: else if (*pos == savepos)
1.277 schwarze 2363: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2364: else
1.277 schwarze 2365: return 0;
1.88 kristaps 2366: }
2367:
1.74 kristaps 2368: static enum rofferr
1.103 kristaps 2369: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2370: {
1.123 schwarze 2371:
1.277 schwarze 2372: return ROFF_IGN;
1.89 kristaps 2373: }
2374:
1.104 kristaps 2375: static enum rofferr
1.251 schwarze 2376: roff_insec(ROFF_ARGS)
2377: {
2378:
2379: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2380: ln, ppos, roff_name[tok]);
1.277 schwarze 2381: return ROFF_IGN;
1.251 schwarze 2382: }
2383:
2384: static enum rofferr
2385: roff_unsupp(ROFF_ARGS)
2386: {
2387:
2388: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2389: ln, ppos, roff_name[tok]);
1.277 schwarze 2390: return ROFF_IGN;
1.251 schwarze 2391: }
2392:
2393: static enum rofferr
1.82 kristaps 2394: roff_cond(ROFF_ARGS)
1.74 kristaps 2395: {
1.173 schwarze 2396:
2397: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2398:
1.207 schwarze 2399: /*
1.134 kristaps 2400: * An `.el' has no conditional body: it will consume the value
2401: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2402: * defaults to DENY.
1.134 kristaps 2403: *
2404: * If we're not an `el', however, then evaluate the conditional.
2405: */
1.133 kristaps 2406:
1.238 schwarze 2407: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2408: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2409: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2410:
1.134 kristaps 2411: /*
2412: * An if-else will put the NEGATION of the current evaluated
2413: * conditional into the stack of rules.
2414: */
2415:
1.238 schwarze 2416: if (tok == ROFF_ie) {
1.223 schwarze 2417: if (r->rstackpos + 1 == r->rstacksz) {
2418: r->rstacksz += 16;
2419: r->rstack = mandoc_reallocarray(r->rstack,
2420: r->rstacksz, sizeof(int));
1.134 kristaps 2421: }
1.198 schwarze 2422: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2423: }
1.88 kristaps 2424:
2425: /* If the parent has false as its rule, then so do we. */
2426:
1.198 schwarze 2427: if (r->last->parent && !r->last->parent->rule)
2428: r->last->rule = 0;
1.88 kristaps 2429:
2430: /*
1.173 schwarze 2431: * Determine scope.
2432: * If there is nothing on the line after the conditional,
2433: * not even whitespace, use next-line scope.
1.88 kristaps 2434: */
1.74 kristaps 2435:
1.238 schwarze 2436: if (buf->buf[pos] == '\0') {
1.173 schwarze 2437: r->last->endspan = 2;
2438: goto out;
2439: }
2440:
1.238 schwarze 2441: while (buf->buf[pos] == ' ')
1.173 schwarze 2442: pos++;
2443:
2444: /* An opening brace requests multiline scope. */
1.75 kristaps 2445:
1.238 schwarze 2446: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2447: r->last->endspan = -1;
2448: pos += 2;
1.272 schwarze 2449: while (buf->buf[pos] == ' ')
2450: pos++;
1.173 schwarze 2451: goto out;
1.207 schwarze 2452: }
1.74 kristaps 2453:
1.77 kristaps 2454: /*
1.173 schwarze 2455: * Anything else following the conditional causes
2456: * single-line scope. Warn if the scope contains
2457: * nothing but trailing whitespace.
1.77 kristaps 2458: */
2459:
1.238 schwarze 2460: if (buf->buf[pos] == '\0')
1.216 schwarze 2461: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2462: ln, ppos, roff_name[tok]);
1.77 kristaps 2463:
1.173 schwarze 2464: r->last->endspan = 1;
1.74 kristaps 2465:
1.173 schwarze 2466: out:
1.75 kristaps 2467: *offs = pos;
1.277 schwarze 2468: return ROFF_RERUN;
1.83 schwarze 2469: }
2470:
2471: static enum rofferr
1.92 schwarze 2472: roff_ds(ROFF_ARGS)
2473: {
1.212 schwarze 2474: char *string;
2475: const char *name;
2476: size_t namesz;
1.96 kristaps 2477:
1.251 schwarze 2478: /* Ignore groff compatibility mode for now. */
2479:
2480: if (tok == ROFF_ds1)
2481: tok = ROFF_ds;
2482: else if (tok == ROFF_as1)
2483: tok = ROFF_as;
2484:
1.96 kristaps 2485: /*
1.212 schwarze 2486: * The first word is the name of the string.
2487: * If it is empty or terminated by an escape sequence,
2488: * abort the `ds' request without defining anything.
1.96 kristaps 2489: */
1.92 schwarze 2490:
1.238 schwarze 2491: name = string = buf->buf + pos;
2492: if (*name == '\0')
1.277 schwarze 2493: return ROFF_IGN;
1.92 schwarze 2494:
1.212 schwarze 2495: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2496: if (name[namesz] == '\\')
1.277 schwarze 2497: return ROFF_IGN;
1.212 schwarze 2498:
2499: /* Read past the initial double-quote, if any. */
1.238 schwarze 2500: if (*string == '"')
1.92 schwarze 2501: string++;
2502:
1.96 kristaps 2503: /* The rest is the value. */
1.212 schwarze 2504: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2505: ROFF_as == tok);
1.311 schwarze 2506: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2507: return ROFF_IGN;
1.92 schwarze 2508: }
2509:
1.204 schwarze 2510: /*
2511: * Parse a single operator, one or two characters long.
2512: * If the operator is recognized, return success and advance the
2513: * parse point, else return failure and let the parse point unchanged.
2514: */
2515: static int
2516: roff_getop(const char *v, int *pos, char *res)
2517: {
2518:
2519: *res = v[*pos];
2520:
2521: switch (*res) {
1.207 schwarze 2522: case '+':
2523: case '-':
2524: case '*':
2525: case '/':
2526: case '%':
2527: case '&':
2528: case ':':
1.204 schwarze 2529: break;
2530: case '<':
2531: switch (v[*pos + 1]) {
1.207 schwarze 2532: case '=':
1.204 schwarze 2533: *res = 'l';
2534: (*pos)++;
2535: break;
1.207 schwarze 2536: case '>':
1.204 schwarze 2537: *res = '!';
2538: (*pos)++;
2539: break;
1.207 schwarze 2540: case '?':
1.204 schwarze 2541: *res = 'i';
2542: (*pos)++;
2543: break;
2544: default:
2545: break;
2546: }
2547: break;
2548: case '>':
2549: switch (v[*pos + 1]) {
1.207 schwarze 2550: case '=':
1.204 schwarze 2551: *res = 'g';
2552: (*pos)++;
2553: break;
1.207 schwarze 2554: case '?':
1.204 schwarze 2555: *res = 'a';
2556: (*pos)++;
2557: break;
2558: default:
2559: break;
2560: }
2561: break;
2562: case '=':
2563: if ('=' == v[*pos + 1])
2564: (*pos)++;
2565: break;
2566: default:
1.277 schwarze 2567: return 0;
1.204 schwarze 2568: }
2569: (*pos)++;
2570:
1.277 schwarze 2571: return *res;
1.204 schwarze 2572: }
2573:
2574: /*
2575: * Evaluate either a parenthesized numeric expression
2576: * or a single signed integer number.
2577: */
2578: static int
1.235 schwarze 2579: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2580: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2581: {
2582:
2583: if ('(' != v[*pos])
1.277 schwarze 2584: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2585:
2586: (*pos)++;
1.261 schwarze 2587: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2588: return 0;
1.204 schwarze 2589:
1.206 schwarze 2590: /*
2591: * Omission of the closing parenthesis
2592: * is an error in validation mode,
2593: * but ignored in evaluation mode.
2594: */
2595:
1.204 schwarze 2596: if (')' == v[*pos])
2597: (*pos)++;
1.206 schwarze 2598: else if (NULL == res)
1.277 schwarze 2599: return 0;
1.204 schwarze 2600:
1.277 schwarze 2601: return 1;
1.204 schwarze 2602: }
2603:
2604: /*
2605: * Evaluate a complete numeric expression.
2606: * Proceed left to right, there is no concept of precedence.
2607: */
2608: static int
1.235 schwarze 2609: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2610: int *pos, int *res, int flags)
1.204 schwarze 2611: {
2612: int mypos, operand2;
2613: char operator;
2614:
2615: if (NULL == pos) {
2616: mypos = 0;
2617: pos = &mypos;
2618: }
2619:
1.261 schwarze 2620: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2621: while (isspace((unsigned char)v[*pos]))
2622: (*pos)++;
2623:
1.261 schwarze 2624: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2625: return 0;
1.204 schwarze 2626:
2627: while (1) {
1.261 schwarze 2628: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2629: while (isspace((unsigned char)v[*pos]))
2630: (*pos)++;
2631:
2632: if ( ! roff_getop(v, pos, &operator))
2633: break;
2634:
1.261 schwarze 2635: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2636: while (isspace((unsigned char)v[*pos]))
2637: (*pos)++;
2638:
1.261 schwarze 2639: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2640: return 0;
1.204 schwarze 2641:
1.261 schwarze 2642: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2643: while (isspace((unsigned char)v[*pos]))
2644: (*pos)++;
1.206 schwarze 2645:
2646: if (NULL == res)
2647: continue;
1.204 schwarze 2648:
2649: switch (operator) {
1.207 schwarze 2650: case '+':
1.204 schwarze 2651: *res += operand2;
2652: break;
1.207 schwarze 2653: case '-':
1.204 schwarze 2654: *res -= operand2;
2655: break;
1.207 schwarze 2656: case '*':
1.204 schwarze 2657: *res *= operand2;
2658: break;
1.207 schwarze 2659: case '/':
1.244 schwarze 2660: if (operand2 == 0) {
1.235 schwarze 2661: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2662: r->parse, ln, *pos, v);
2663: *res = 0;
2664: break;
2665: }
1.204 schwarze 2666: *res /= operand2;
2667: break;
1.207 schwarze 2668: case '%':
1.244 schwarze 2669: if (operand2 == 0) {
2670: mandoc_msg(MANDOCERR_DIVZERO,
2671: r->parse, ln, *pos, v);
2672: *res = 0;
2673: break;
2674: }
1.204 schwarze 2675: *res %= operand2;
2676: break;
1.207 schwarze 2677: case '<':
1.204 schwarze 2678: *res = *res < operand2;
2679: break;
1.207 schwarze 2680: case '>':
1.204 schwarze 2681: *res = *res > operand2;
2682: break;
1.207 schwarze 2683: case 'l':
1.204 schwarze 2684: *res = *res <= operand2;
2685: break;
1.207 schwarze 2686: case 'g':
1.204 schwarze 2687: *res = *res >= operand2;
2688: break;
1.207 schwarze 2689: case '=':
1.204 schwarze 2690: *res = *res == operand2;
2691: break;
1.207 schwarze 2692: case '!':
1.204 schwarze 2693: *res = *res != operand2;
2694: break;
1.207 schwarze 2695: case '&':
1.204 schwarze 2696: *res = *res && operand2;
2697: break;
1.207 schwarze 2698: case ':':
1.204 schwarze 2699: *res = *res || operand2;
2700: break;
1.207 schwarze 2701: case 'i':
1.204 schwarze 2702: if (operand2 < *res)
2703: *res = operand2;
2704: break;
1.207 schwarze 2705: case 'a':
1.204 schwarze 2706: if (operand2 > *res)
2707: *res = operand2;
2708: break;
2709: default:
2710: abort();
2711: }
2712: }
1.277 schwarze 2713: return 1;
1.204 schwarze 2714: }
2715:
1.266 schwarze 2716: /* --- register management ------------------------------------------------ */
2717:
1.180 schwarze 2718: void
1.187 schwarze 2719: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2720: {
1.327 schwarze 2721: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2722: }
2723:
2724: static void
2725: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2726: int val, char sign, int step)
1.326 schwarze 2727: {
1.180 schwarze 2728: struct roffreg *reg;
2729:
2730: /* Search for an existing register with the same name. */
2731: reg = r->regtab;
2732:
1.326 schwarze 2733: while (reg != NULL && (reg->key.sz != len ||
2734: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 2735: reg = reg->next;
1.147 kristaps 2736:
1.180 schwarze 2737: if (NULL == reg) {
2738: /* Create a new register. */
2739: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 2740: reg->key.p = mandoc_strndup(name, len);
2741: reg->key.sz = len;
1.187 schwarze 2742: reg->val = 0;
1.327 schwarze 2743: reg->step = 0;
1.180 schwarze 2744: reg->next = r->regtab;
2745: r->regtab = reg;
2746: }
2747:
1.187 schwarze 2748: if ('+' == sign)
2749: reg->val += val;
2750: else if ('-' == sign)
2751: reg->val -= val;
2752: else
2753: reg->val = val;
1.327 schwarze 2754: if (step != INT_MIN)
2755: reg->step = step;
1.147 kristaps 2756: }
2757:
1.192 schwarze 2758: /*
2759: * Handle some predefined read-only number registers.
2760: * For now, return -1 if the requested register is not predefined;
2761: * in case a predefined read-only register having the value -1
2762: * were to turn up, another special value would have to be chosen.
2763: */
2764: static int
1.273 schwarze 2765: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2766: {
2767:
2768: switch (*name) {
1.273 schwarze 2769: case '$': /* Number of arguments of the last macro evaluated. */
1.339 ! schwarze 2770: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 2771: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2772: return 0;
1.207 schwarze 2773: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2774: return 1;
1.207 schwarze 2775: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2776: return 24;
1.207 schwarze 2777: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2778: return 0;
1.207 schwarze 2779: case 'T': /* Some output device is always defined. */
1.277 schwarze 2780: return 1;
1.207 schwarze 2781: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2782: return 40;
1.192 schwarze 2783: default:
1.277 schwarze 2784: return -1;
1.192 schwarze 2785: }
2786: }
2787:
1.181 schwarze 2788: int
1.326 schwarze 2789: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 2790: {
1.327 schwarze 2791: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 2792: }
2793:
2794: static int
1.327 schwarze 2795: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 2796: {
2797: struct roffreg *reg;
1.192 schwarze 2798: int val;
2799:
2800: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2801: val = roff_getregro(r, name + 1);
1.192 schwarze 2802: if (-1 != val)
1.277 schwarze 2803: return val;
1.192 schwarze 2804: }
1.181 schwarze 2805:
1.327 schwarze 2806: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 2807: if (len == reg->key.sz &&
1.327 schwarze 2808: 0 == strncmp(name, reg->key.p, len)) {
2809: switch (sign) {
2810: case '+':
2811: reg->val += reg->step;
2812: break;
2813: case '-':
2814: reg->val -= reg->step;
2815: break;
2816: default:
2817: break;
2818: }
1.277 schwarze 2819: return reg->val;
1.327 schwarze 2820: }
2821: }
1.271 schwarze 2822:
1.327 schwarze 2823: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 2824: return 0;
1.271 schwarze 2825: }
2826:
2827: static int
2828: roff_hasregn(const struct roff *r, const char *name, size_t len)
2829: {
2830: struct roffreg *reg;
2831: int val;
2832:
2833: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2834: val = roff_getregro(r, name + 1);
1.271 schwarze 2835: if (-1 != val)
1.277 schwarze 2836: return 1;
1.271 schwarze 2837: }
2838:
2839: for (reg = r->regtab; reg; reg = reg->next)
2840: if (len == reg->key.sz &&
2841: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2842: return 1;
1.147 kristaps 2843:
1.277 schwarze 2844: return 0;
1.147 kristaps 2845: }
2846:
1.180 schwarze 2847: static void
2848: roff_freereg(struct roffreg *reg)
1.147 kristaps 2849: {
1.180 schwarze 2850: struct roffreg *old_reg;
1.147 kristaps 2851:
1.180 schwarze 2852: while (NULL != reg) {
2853: free(reg->key.p);
2854: old_reg = reg;
2855: reg = reg->next;
2856: free(old_reg);
2857: }
1.147 kristaps 2858: }
1.92 schwarze 2859:
2860: static enum rofferr
1.89 kristaps 2861: roff_nr(ROFF_ARGS)
1.83 schwarze 2862: {
1.327 schwarze 2863: char *key, *val, *step;
1.212 schwarze 2864: size_t keysz;
1.327 schwarze 2865: int iv, is, len;
1.187 schwarze 2866: char sign;
1.89 kristaps 2867:
1.238 schwarze 2868: key = val = buf->buf + pos;
2869: if (*key == '\0')
1.277 schwarze 2870: return ROFF_IGN;
1.212 schwarze 2871:
2872: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2873: if (key[keysz] == '\\')
1.277 schwarze 2874: return ROFF_IGN;
1.89 kristaps 2875:
1.187 schwarze 2876: sign = *val;
1.238 schwarze 2877: if (sign == '+' || sign == '-')
1.187 schwarze 2878: val++;
2879:
1.327 schwarze 2880: len = 0;
2881: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2882: return ROFF_IGN;
2883:
2884: step = val + len;
2885: while (isspace((unsigned char)*step))
2886: step++;
2887: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2888: is = INT_MIN;
1.109 kristaps 2889:
1.327 schwarze 2890: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 2891: return ROFF_IGN;
1.203 schwarze 2892: }
2893:
2894: static enum rofferr
2895: roff_rr(ROFF_ARGS)
2896: {
2897: struct roffreg *reg, **prev;
1.212 schwarze 2898: char *name, *cp;
2899: size_t namesz;
1.203 schwarze 2900:
1.238 schwarze 2901: name = cp = buf->buf + pos;
2902: if (*name == '\0')
1.277 schwarze 2903: return ROFF_IGN;
1.212 schwarze 2904: namesz = roff_getname(r, &cp, ln, pos);
2905: name[namesz] = '\0';
1.203 schwarze 2906:
2907: prev = &r->regtab;
2908: while (1) {
2909: reg = *prev;
1.238 schwarze 2910: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2911: break;
2912: prev = ®->next;
2913: }
1.238 schwarze 2914: if (reg != NULL) {
1.203 schwarze 2915: *prev = reg->next;
2916: free(reg->key.p);
2917: free(reg);
2918: }
1.277 schwarze 2919: return ROFF_IGN;
1.122 schwarze 2920: }
2921:
1.266 schwarze 2922: /* --- handler functions for roff requests -------------------------------- */
2923:
1.122 schwarze 2924: static enum rofferr
2925: roff_rm(ROFF_ARGS)
2926: {
2927: const char *name;
2928: char *cp;
1.212 schwarze 2929: size_t namesz;
1.122 schwarze 2930:
1.238 schwarze 2931: cp = buf->buf + pos;
2932: while (*cp != '\0') {
1.212 schwarze 2933: name = cp;
1.238 schwarze 2934: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2935: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 2936: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 2937: if (name[namesz] == '\\')
1.212 schwarze 2938: break;
1.122 schwarze 2939: }
1.277 schwarze 2940: return ROFF_IGN;
1.178 schwarze 2941: }
2942:
2943: static enum rofferr
2944: roff_it(ROFF_ARGS)
2945: {
2946: int iv;
2947:
2948: /* Parse the number of lines. */
1.261 schwarze 2949:
2950: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2951: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2952: ln, ppos, buf->buf + 1);
1.277 schwarze 2953: return ROFF_IGN;
1.178 schwarze 2954: }
2955:
1.262 schwarze 2956: while (isspace((unsigned char)buf->buf[pos]))
2957: pos++;
2958:
2959: /*
2960: * Arm the input line trap.
2961: * Special-casing "an-trap" is an ugly workaround to cope
2962: * with DocBook stupidly fiddling with man(7) internals.
2963: */
1.261 schwarze 2964:
1.178 schwarze 2965: roffit_lines = iv;
1.262 schwarze 2966: roffit_macro = mandoc_strdup(iv != 1 ||
2967: strcmp(buf->buf + pos, "an-trap") ?
2968: buf->buf + pos : "br");
1.277 schwarze 2969: return ROFF_IGN;
1.175 schwarze 2970: }
2971:
2972: static enum rofferr
2973: roff_Dd(ROFF_ARGS)
2974: {
1.315 schwarze 2975: int mask;
2976: enum roff_tok t, te;
1.227 schwarze 2977:
1.315 schwarze 2978: switch (tok) {
2979: case ROFF_Dd:
2980: tok = MDOC_Dd;
2981: te = MDOC_MAX;
2982: if (r->format == 0)
2983: r->format = MPARSE_MDOC;
2984: mask = MPARSE_MDOC | MPARSE_QUICK;
2985: break;
2986: case ROFF_TH:
2987: tok = MAN_TH;
2988: te = MAN_MAX;
2989: if (r->format == 0)
2990: r->format = MPARSE_MAN;
2991: mask = MPARSE_QUICK;
2992: break;
2993: default:
2994: abort();
2995: }
2996: if ((r->options & mask) == 0)
2997: for (t = tok; t < te; t++)
2998: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 2999: return ROFF_CONT;
1.109 kristaps 3000: }
3001:
3002: static enum rofferr
3003: roff_TE(ROFF_ARGS)
3004: {
1.321 schwarze 3005: if (r->tbl == NULL) {
1.221 schwarze 3006: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3007: ln, ppos, "TE");
1.321 schwarze 3008: return ROFF_IGN;
3009: }
3010: if (tbl_end(r->tbl) == 0) {
3011: r->tbl = NULL;
1.258 schwarze 3012: free(buf->buf);
3013: buf->buf = mandoc_strdup(".sp");
3014: buf->sz = 4;
1.329 schwarze 3015: *offs = 0;
1.277 schwarze 3016: return ROFF_REPARSE;
1.258 schwarze 3017: }
1.321 schwarze 3018: r->tbl = NULL;
1.277 schwarze 3019: return ROFF_IGN;
1.112 kristaps 3020: }
3021:
3022: static enum rofferr
3023: roff_T_(ROFF_ARGS)
3024: {
3025:
3026: if (NULL == r->tbl)
1.221 schwarze 3027: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3028: ln, ppos, "T&");
1.112 kristaps 3029: else
1.296 schwarze 3030: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3031:
1.277 schwarze 3032: return ROFF_IGN;
1.109 kristaps 3033: }
3034:
1.230 schwarze 3035: /*
3036: * Handle in-line equation delimiters.
3037: */
3038: static enum rofferr
1.238 schwarze 3039: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3040: {
1.233 schwarze 3041: char *cp1, *cp2;
3042: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3043:
1.230 schwarze 3044: /*
3045: * Outside equations, look for an opening delimiter.
3046: * If we are inside an equation, we already know it is
3047: * in-line, or this function wouldn't have been called;
3048: * so look for a closing delimiter.
3049: */
3050:
1.238 schwarze 3051: cp1 = buf->buf + pos;
1.230 schwarze 3052: cp2 = strchr(cp1, r->eqn == NULL ?
3053: r->last_eqn->odelim : r->last_eqn->cdelim);
3054: if (cp2 == NULL)
1.277 schwarze 3055: return ROFF_CONT;
1.230 schwarze 3056:
1.233 schwarze 3057: *cp2++ = '\0';
3058: bef_pr = bef_nl = aft_nl = aft_pr = "";
3059:
3060: /* Handle preceding text, protecting whitespace. */
3061:
1.238 schwarze 3062: if (*buf->buf != '\0') {
1.233 schwarze 3063: if (r->eqn == NULL)
3064: bef_pr = "\\&";
3065: bef_nl = "\n";
3066: }
3067:
3068: /*
3069: * Prepare replacing the delimiter with an equation macro
3070: * and drop leading white space from the equation.
3071: */
1.230 schwarze 3072:
1.233 schwarze 3073: if (r->eqn == NULL) {
3074: while (*cp2 == ' ')
3075: cp2++;
3076: mac = ".EQ";
3077: } else
3078: mac = ".EN";
3079:
3080: /* Handle following text, protecting whitespace. */
3081:
3082: if (*cp2 != '\0') {
3083: aft_nl = "\n";
3084: if (r->eqn != NULL)
3085: aft_pr = "\\&";
3086: }
3087:
3088: /* Do the actual replacement. */
3089:
1.238 schwarze 3090: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3091: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3092: free(buf->buf);
3093: buf->buf = cp1;
1.230 schwarze 3094:
3095: /* Toggle the in-line state of the eqn subsystem. */
3096:
3097: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3098: return ROFF_REPARSE;
1.151 kristaps 3099: }
3100:
1.235 schwarze 3101: static enum rofferr
3102: roff_EQ(ROFF_ARGS)
1.125 kristaps 3103: {
1.319 schwarze 3104: struct roff_node *n;
3105:
1.322 schwarze 3106: if (r->man->macroset == MACROSET_MAN)
3107: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3108: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3109: if (ln > r->man->last->line)
3110: n->flags |= NODE_LINE;
3111: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
3112: n->eqn->expectargs = UINT_MAX;
3113: roff_node_append(r->man, n);
3114: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3115:
1.238 schwarze 3116: assert(r->eqn == NULL);
1.319 schwarze 3117: if (r->last_eqn == NULL)
3118: r->last_eqn = eqn_alloc(r->parse);
3119: else
3120: eqn_reset(r->last_eqn);
3121: r->eqn = r->last_eqn;
3122: r->eqn->node = n;
1.151 kristaps 3123:
1.238 schwarze 3124: if (buf->buf[pos] != '\0')
1.235 schwarze 3125: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 3126: ".EQ %s", buf->buf + pos);
1.151 kristaps 3127:
1.277 schwarze 3128: return ROFF_IGN;
1.125 kristaps 3129: }
3130:
3131: static enum rofferr
3132: roff_EN(ROFF_ARGS)
3133: {
1.319 schwarze 3134: if (r->eqn != NULL) {
3135: eqn_parse(r->eqn);
3136: r->eqn = NULL;
3137: } else
3138: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
3139: if (buf->buf[pos] != '\0')
3140: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3141: "EN %s", buf->buf + pos);
1.277 schwarze 3142: return ROFF_IGN;
1.125 kristaps 3143: }
3144:
3145: static enum rofferr
1.109 kristaps 3146: roff_TS(ROFF_ARGS)
3147: {
1.321 schwarze 3148: if (r->tbl != NULL) {
1.221 schwarze 3149: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
3150: ln, ppos, "TS breaks TS");
1.321 schwarze 3151: tbl_end(r->tbl);
1.115 kristaps 3152: }
1.321 schwarze 3153: r->tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 3154: if (r->last_tbl)
1.321 schwarze 3155: r->last_tbl->next = r->tbl;
1.113 kristaps 3156: else
1.321 schwarze 3157: r->first_tbl = r->tbl;
3158: r->last_tbl = r->tbl;
1.297 schwarze 3159: return ROFF_IGN;
3160: }
3161:
3162: static enum rofferr
3163: roff_onearg(ROFF_ARGS)
3164: {
3165: struct roff_node *n;
3166: char *cp;
1.305 schwarze 3167: int npos;
1.297 schwarze 3168:
1.302 schwarze 3169: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3170: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3171: tok == ROFF_ti))
1.302 schwarze 3172: man_breakscope(r->man, tok);
3173:
1.309 schwarze 3174: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3175: r->man->last = roffce_node;
3176: r->man->next = ROFF_NEXT_SIBLING;
3177: }
3178:
1.297 schwarze 3179: roff_elem_alloc(r->man, ln, ppos, tok);
3180: n = r->man->last;
3181:
3182: cp = buf->buf + pos;
3183: if (*cp != '\0') {
3184: while (*cp != '\0' && *cp != ' ')
3185: cp++;
3186: while (*cp == ' ')
3187: *cp++ = '\0';
3188: if (*cp != '\0')
3189: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
3190: r->parse, ln, cp - buf->buf,
3191: "%s ... %s", roff_name[tok], cp);
3192: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3193: }
3194:
1.309 schwarze 3195: if (tok == ROFF_ce || tok == ROFF_rj) {
3196: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3197: roff_word_alloc(r->man, ln, pos, "1");
3198: r->man->last->flags |= NODE_NOSRC;
3199: }
3200: npos = 0;
3201: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3202: &roffce_lines, 0) == 0) {
3203: mandoc_vmsg(MANDOCERR_CE_NONUM,
3204: r->parse, ln, pos, "ce %s", buf->buf + pos);
3205: roffce_lines = 1;
3206: }
3207: if (roffce_lines < 1) {
3208: r->man->last = r->man->last->parent;
3209: roffce_node = NULL;
3210: roffce_lines = 0;
3211: } else
3212: roffce_node = r->man->last->parent;
3213: } else {
3214: n->flags |= NODE_VALID | NODE_ENDED;
3215: r->man->last = n;
3216: }
3217: n->flags |= NODE_LINE;
1.300 schwarze 3218: r->man->next = ROFF_NEXT_SIBLING;
3219: return ROFF_IGN;
3220: }
3221:
3222: static enum rofferr
3223: roff_manyarg(ROFF_ARGS)
3224: {
3225: struct roff_node *n;
3226: char *sp, *ep;
3227:
3228: roff_elem_alloc(r->man, ln, ppos, tok);
3229: n = r->man->last;
3230:
3231: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3232: while (*ep != '\0' && *ep != ' ')
3233: ep++;
3234: while (*ep == ' ')
3235: *ep++ = '\0';
3236: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3237: }
3238:
3239: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3240: r->man->last = n;
3241: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3242: return ROFF_IGN;
1.251 schwarze 3243: }
3244:
3245: static enum rofferr
1.311 schwarze 3246: roff_als(ROFF_ARGS)
3247: {
3248: char *oldn, *newn, *end, *value;
3249: size_t oldsz, newsz, valsz;
3250:
3251: newn = oldn = buf->buf + pos;
3252: if (*newn == '\0')
3253: return ROFF_IGN;
3254:
3255: newsz = roff_getname(r, &oldn, ln, pos);
3256: if (newn[newsz] == '\\' || *oldn == '\0')
3257: return ROFF_IGN;
3258:
3259: end = oldn;
3260: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3261: if (oldsz == 0)
3262: return ROFF_IGN;
3263:
1.338 schwarze 3264: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3265: (int)oldsz, oldn);
1.311 schwarze 3266: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3267: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3268: free(value);
3269: return ROFF_IGN;
3270: }
3271:
3272: static enum rofferr
1.296 schwarze 3273: roff_br(ROFF_ARGS)
1.251 schwarze 3274: {
1.302 schwarze 3275: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3276: man_breakscope(r->man, ROFF_br);
1.296 schwarze 3277: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3278: if (buf->buf[pos] != '\0')
3279: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3280: "%s %s", roff_name[tok], buf->buf + pos);
3281: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3282: r->man->next = ROFF_NEXT_SIBLING;
3283: return ROFF_IGN;
1.92 schwarze 3284: }
3285:
1.105 kristaps 3286: static enum rofferr
1.174 kristaps 3287: roff_cc(ROFF_ARGS)
3288: {
3289: const char *p;
3290:
1.238 schwarze 3291: p = buf->buf + pos;
1.174 kristaps 3292:
1.238 schwarze 3293: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3294: r->control = '\0';
1.174 kristaps 3295:
1.238 schwarze 3296: if (*p != '\0')
1.260 schwarze 3297: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3298: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3299:
1.277 schwarze 3300: return ROFF_IGN;
1.174 kristaps 3301: }
3302:
3303: static enum rofferr
1.303 schwarze 3304: roff_ec(ROFF_ARGS)
3305: {
3306: const char *p;
3307:
3308: p = buf->buf + pos;
3309: if (*p == '\0')
3310: r->escape = '\\';
3311: else {
3312: r->escape = *p;
3313: if (*++p != '\0')
3314: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3315: ln, p - buf->buf, "ec ... %s", p);
3316: }
3317: return ROFF_IGN;
3318: }
3319:
3320: static enum rofferr
3321: roff_eo(ROFF_ARGS)
3322: {
3323: r->escape = '\0';
3324: if (buf->buf[pos] != '\0')
3325: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3326: ln, pos, "eo %s", buf->buf + pos);
3327: return ROFF_IGN;
1.330 schwarze 3328: }
3329:
3330: static enum rofferr
3331: roff_nop(ROFF_ARGS)
3332: {
3333: while (buf->buf[pos] == ' ')
3334: pos++;
3335: *offs = pos;
3336: return ROFF_RERUN;
1.303 schwarze 3337: }
3338:
3339: static enum rofferr
1.164 kristaps 3340: roff_tr(ROFF_ARGS)
3341: {
3342: const char *p, *first, *second;
3343: size_t fsz, ssz;
3344: enum mandoc_esc esc;
3345:
1.238 schwarze 3346: p = buf->buf + pos;
1.164 kristaps 3347:
1.238 schwarze 3348: if (*p == '\0') {
1.260 schwarze 3349: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 3350: return ROFF_IGN;
1.164 kristaps 3351: }
3352:
1.238 schwarze 3353: while (*p != '\0') {
1.164 kristaps 3354: fsz = ssz = 1;
3355:
3356: first = p++;
1.238 schwarze 3357: if (*first == '\\') {
1.164 kristaps 3358: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3359: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3360: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3361: ln, (int)(p - buf->buf), first);
1.277 schwarze 3362: return ROFF_IGN;
1.164 kristaps 3363: }
3364: fsz = (size_t)(p - first);
3365: }
3366:
3367: second = p++;
1.238 schwarze 3368: if (*second == '\\') {
1.164 kristaps 3369: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3370: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3371: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3372: ln, (int)(p - buf->buf), second);
1.277 schwarze 3373: return ROFF_IGN;
1.164 kristaps 3374: }
3375: ssz = (size_t)(p - second);
1.238 schwarze 3376: } else if (*second == '\0') {
1.260 schwarze 3377: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3378: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3379: second = " ";
1.165 kristaps 3380: p--;
1.164 kristaps 3381: }
3382:
1.167 kristaps 3383: if (fsz > 1) {
1.207 schwarze 3384: roff_setstrn(&r->xmbtab, first, fsz,
3385: second, ssz, 0);
1.167 kristaps 3386: continue;
3387: }
3388:
1.238 schwarze 3389: if (r->xtab == NULL)
1.207 schwarze 3390: r->xtab = mandoc_calloc(128,
3391: sizeof(struct roffstr));
1.167 kristaps 3392:
3393: free(r->xtab[(int)*first].p);
3394: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3395: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3396: }
3397:
1.277 schwarze 3398: return ROFF_IGN;
1.164 kristaps 3399: }
3400:
1.339 ! schwarze 3401: /*
! 3402: * Implementation of the .return request.
! 3403: * There is no need to call roff_userret() from here.
! 3404: * The read module will call that after rewinding the reader stack
! 3405: * to the place from where the current macro was called.
! 3406: */
! 3407: static enum rofferr
! 3408: roff_return(ROFF_ARGS)
! 3409: {
! 3410: if (r->mstackpos >= 0)
! 3411: return ROFF_USERRET;
! 3412:
! 3413: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "return");
! 3414: return ROFF_IGN;
! 3415: }
! 3416:
1.164 kristaps 3417: static enum rofferr
1.306 schwarze 3418: roff_rn(ROFF_ARGS)
3419: {
3420: const char *value;
3421: char *oldn, *newn, *end;
3422: size_t oldsz, newsz;
1.315 schwarze 3423: int deftype;
1.306 schwarze 3424:
3425: oldn = newn = buf->buf + pos;
3426: if (*oldn == '\0')
3427: return ROFF_IGN;
3428:
3429: oldsz = roff_getname(r, &newn, ln, pos);
3430: if (oldn[oldsz] == '\\' || *newn == '\0')
3431: return ROFF_IGN;
3432:
3433: end = newn;
3434: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3435: if (newsz == 0)
3436: return ROFF_IGN;
3437:
1.315 schwarze 3438: deftype = ROFFDEF_ANY;
3439: value = roff_getstrn(r, oldn, oldsz, &deftype);
3440: switch (deftype) {
3441: case ROFFDEF_USER:
1.306 schwarze 3442: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3443: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3444: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3445: break;
3446: case ROFFDEF_PRE:
3447: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3448: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3449: break;
3450: case ROFFDEF_REN:
1.306 schwarze 3451: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3452: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3453: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3454: break;
3455: case ROFFDEF_STD:
1.306 schwarze 3456: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3457: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3458: break;
3459: default:
3460: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3461: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3462: break;
3463: }
1.306 schwarze 3464: return ROFF_IGN;
3465: }
3466:
3467: static enum rofferr
1.339 ! schwarze 3468: roff_shift(ROFF_ARGS)
! 3469: {
! 3470: struct mctx *ctx;
! 3471: int levels, i;
! 3472:
! 3473: levels = 1;
! 3474: if (buf->buf[pos] != '\0' &&
! 3475: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
! 3476: mandoc_vmsg(MANDOCERR_CE_NONUM, r->parse,
! 3477: ln, pos, "shift %s", buf->buf + pos);
! 3478: levels = 1;
! 3479: }
! 3480: if (r->mstackpos < 0) {
! 3481: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "shift");
! 3482: return ROFF_IGN;
! 3483: }
! 3484: ctx = r->mstack + r->mstackpos;
! 3485: if (levels > ctx->argc) {
! 3486: mandoc_vmsg(MANDOCERR_SHIFT, r->parse,
! 3487: ln, pos, "%d, but max is %d", levels, ctx->argc);
! 3488: levels = ctx->argc;
! 3489: }
! 3490: if (levels == 0)
! 3491: return ROFF_IGN;
! 3492: for (i = 0; i < levels; i++)
! 3493: free(ctx->argv[i]);
! 3494: ctx->argc -= levels;
! 3495: for (i = 0; i < ctx->argc; i++)
! 3496: ctx->argv[i] = ctx->argv[i + levels];
! 3497: return ROFF_IGN;
! 3498: }
! 3499:
! 3500: static enum rofferr
1.105 kristaps 3501: roff_so(ROFF_ARGS)
3502: {
1.249 schwarze 3503: char *name, *cp;
1.105 kristaps 3504:
1.238 schwarze 3505: name = buf->buf + pos;
1.224 schwarze 3506: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3507:
3508: /*
3509: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3510: * opening anything that's not in our cwd or anything beneath
3511: * it. Thus, explicitly disallow traversing up the file-system
3512: * or using absolute paths.
3513: */
3514:
1.238 schwarze 3515: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3516: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3517: ".so %s", name);
1.249 schwarze 3518: buf->sz = mandoc_asprintf(&cp,
3519: ".sp\nSee the file %s.\n.sp", name) + 1;
3520: free(buf->buf);
3521: buf->buf = cp;
3522: *offs = 0;
1.277 schwarze 3523: return ROFF_REPARSE;
1.105 kristaps 3524: }
3525:
3526: *offs = pos;
1.277 schwarze 3527: return ROFF_SO;
1.105 kristaps 3528: }
1.92 schwarze 3529:
1.266 schwarze 3530: /* --- user defined strings and macros ------------------------------------ */
3531:
1.106 kristaps 3532: static enum rofferr
3533: roff_userdef(ROFF_ARGS)
1.99 kristaps 3534: {
1.339 ! schwarze 3535: struct mctx *ctx;
! 3536: char *arg, *ap, *dst, *src;
! 3537: size_t sz;
! 3538:
! 3539: /* Initialize a new macro stack context. */
! 3540:
! 3541: if (++r->mstackpos == r->mstacksz) {
! 3542: r->mstack = mandoc_recallocarray(r->mstack,
! 3543: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
! 3544: r->mstacksz += 8;
! 3545: }
! 3546: ctx = r->mstack + r->mstackpos;
! 3547: ctx->argsz = 0;
! 3548: ctx->argc = 0;
! 3549: ctx->argv = NULL;
! 3550:
! 3551: /*
! 3552: * Collect pointers to macro argument strings,
! 3553: * NUL-terminating them and escaping quotes.
! 3554: */
! 3555:
! 3556: src = buf->buf + pos;
! 3557: while (*src != '\0') {
! 3558: if (ctx->argc == ctx->argsz) {
! 3559: ctx->argsz += 8;
! 3560: ctx->argv = mandoc_reallocarray(ctx->argv,
! 3561: ctx->argsz, sizeof(*ctx->argv));
! 3562: }
! 3563: arg = mandoc_getarg(r->parse, &src, ln, &pos);
! 3564: sz = 1; /* For the terminating NUL. */
! 3565: for (ap = arg; *ap != '\0'; ap++)
! 3566: sz += *ap == '"' ? 4 : 1;
! 3567: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
! 3568: for (ap = arg; *ap != '\0'; ap++) {
! 3569: if (*ap == '"') {
! 3570: memcpy(dst, "\\(dq", 4);
! 3571: dst += 4;
! 3572: } else
! 3573: *dst++ = *ap;
1.106 kristaps 3574: }
1.339 ! schwarze 3575: *dst = '\0';
1.337 schwarze 3576: }
3577:
1.339 ! schwarze 3578: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3579:
1.238 schwarze 3580: free(buf->buf);
1.339 ! schwarze 3581: buf->buf = mandoc_strdup(r->current_string);
! 3582: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3583: *offs = 0;
1.106 kristaps 3584:
1.277 schwarze 3585: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.339 ! schwarze 3586: ROFF_USERCALL : ROFF_APPEND;
1.99 kristaps 3587: }
1.121 schwarze 3588:
1.306 schwarze 3589: /*
3590: * Calling a high-level macro that was renamed with .rn.
3591: * r->current_string has already been set up by roff_parse().
3592: */
3593: static enum rofferr
3594: roff_renamed(ROFF_ARGS)
3595: {
3596: char *nbuf;
3597:
1.315 schwarze 3598: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3599: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3600: free(buf->buf);
3601: buf->buf = nbuf;
1.329 schwarze 3602: *offs = 0;
1.306 schwarze 3603: return ROFF_CONT;
3604: }
3605:
1.212 schwarze 3606: static size_t
1.121 schwarze 3607: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3608: {
3609: char *name, *cp;
1.212 schwarze 3610: size_t namesz;
1.121 schwarze 3611:
3612: name = *cpp;
3613: if ('\0' == *name)
1.277 schwarze 3614: return 0;
1.121 schwarze 3615:
1.212 schwarze 3616: /* Read until end of name and terminate it with NUL. */
3617: for (cp = name; 1; cp++) {
3618: if ('\0' == *cp || ' ' == *cp) {
3619: namesz = cp - name;
3620: break;
3621: }
1.121 schwarze 3622: if ('\\' != *cp)
3623: continue;
1.215 schwarze 3624: namesz = cp - name;
3625: if ('{' == cp[1] || '}' == cp[1])
3626: break;
1.121 schwarze 3627: cp++;
3628: if ('\\' == *cp)
3629: continue;
1.224 schwarze 3630: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3631: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3632: mandoc_escape((const char **)&cp, NULL, NULL);
3633: break;
1.121 schwarze 3634: }
3635:
3636: /* Read past spaces. */
3637: while (' ' == *cp)
3638: cp++;
3639:
3640: *cpp = cp;
1.277 schwarze 3641: return namesz;
1.121 schwarze 3642: }
3643:
1.106 kristaps 3644: /*
3645: * Store *string into the user-defined string called *name.
3646: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3647: * append == 0: replace mode
3648: * append == 1: single-line append mode
3649: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3650: */
1.94 kristaps 3651: static void
1.106 kristaps 3652: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3653: int append)
1.92 schwarze 3654: {
1.315 schwarze 3655: size_t namesz;
1.164 kristaps 3656:
1.315 schwarze 3657: namesz = strlen(name);
3658: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 3659: string ? strlen(string) : 0, append);
1.315 schwarze 3660: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 3661: }
3662:
3663: static void
1.166 kristaps 3664: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3665: const char *string, size_t stringsz, int append)
1.164 kristaps 3666: {
1.166 kristaps 3667: struct roffkv *n;
1.164 kristaps 3668: char *c;
3669: int i;
3670: size_t oldch, newch;
1.92 schwarze 3671:
1.106 kristaps 3672: /* Search for an existing string with the same name. */
1.164 kristaps 3673: n = *r;
3674:
1.211 schwarze 3675: while (n && (namesz != n->key.sz ||
3676: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3677: n = n->next;
1.94 kristaps 3678:
3679: if (NULL == n) {
1.106 kristaps 3680: /* Create a new string table entry. */
1.166 kristaps 3681: n = mandoc_malloc(sizeof(struct roffkv));
3682: n->key.p = mandoc_strndup(name, namesz);
3683: n->key.sz = namesz;
3684: n->val.p = NULL;
3685: n->val.sz = 0;
1.164 kristaps 3686: n->next = *r;
3687: *r = n;
1.193 schwarze 3688: } else if (0 == append) {
1.166 kristaps 3689: free(n->val.p);
3690: n->val.p = NULL;
3691: n->val.sz = 0;
1.106 kristaps 3692: }
3693:
3694: if (NULL == string)
3695: return;
3696:
3697: /*
3698: * One additional byte for the '\n' in multiline mode,
3699: * and one for the terminating '\0'.
3700: */
1.193 schwarze 3701: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3702:
1.166 kristaps 3703: if (NULL == n->val.p) {
3704: n->val.p = mandoc_malloc(newch);
3705: *n->val.p = '\0';
1.106 kristaps 3706: oldch = 0;
3707: } else {
1.166 kristaps 3708: oldch = n->val.sz;
3709: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3710: }
3711:
3712: /* Skip existing content in the destination buffer. */
1.166 kristaps 3713: c = n->val.p + (int)oldch;
1.106 kristaps 3714:
3715: /* Append new content to the destination buffer. */
1.164 kristaps 3716: i = 0;
3717: while (i < (int)stringsz) {
1.106 kristaps 3718: /*
3719: * Rudimentary roff copy mode:
3720: * Handle escaped backslashes.
3721: */
1.164 kristaps 3722: if ('\\' == string[i] && '\\' == string[i + 1])
3723: i++;
3724: *c++ = string[i++];
1.106 kristaps 3725: }
1.94 kristaps 3726:
1.106 kristaps 3727: /* Append terminating bytes. */
1.193 schwarze 3728: if (1 < append)
1.106 kristaps 3729: *c++ = '\n';
1.163 kristaps 3730:
1.106 kristaps 3731: *c = '\0';
1.166 kristaps 3732: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3733: }
3734:
1.94 kristaps 3735: static const char *
1.325 schwarze 3736: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 3737: int *deftype)
1.92 schwarze 3738: {
1.315 schwarze 3739: const struct roffkv *n;
1.325 schwarze 3740: int found, i;
1.315 schwarze 3741: enum roff_tok tok;
3742:
1.325 schwarze 3743: found = 0;
3744: for (n = r->strtab; n != NULL; n = n->next) {
3745: if (strncmp(name, n->key.p, len) != 0 ||
3746: n->key.p[len] != '\0' || n->val.p == NULL)
3747: continue;
3748: if (*deftype & ROFFDEF_USER) {
3749: *deftype = ROFFDEF_USER;
3750: return n->val.p;
3751: } else {
3752: found = 1;
3753: break;
3754: }
3755: }
3756: for (n = r->rentab; n != NULL; n = n->next) {
3757: if (strncmp(name, n->key.p, len) != 0 ||
3758: n->key.p[len] != '\0' || n->val.p == NULL)
3759: continue;
3760: if (*deftype & ROFFDEF_REN) {
3761: *deftype = ROFFDEF_REN;
3762: return n->val.p;
3763: } else {
3764: found = 1;
3765: break;
1.315 schwarze 3766: }
3767: }
1.325 schwarze 3768: for (i = 0; i < PREDEFS_MAX; i++) {
3769: if (strncmp(name, predefs[i].name, len) != 0 ||
3770: predefs[i].name[len] != '\0')
3771: continue;
3772: if (*deftype & ROFFDEF_PRE) {
3773: *deftype = ROFFDEF_PRE;
3774: return predefs[i].str;
3775: } else {
3776: found = 1;
3777: break;
1.315 schwarze 3778: }
3779: }
1.325 schwarze 3780: if (r->man->macroset != MACROSET_MAN) {
3781: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3782: if (strncmp(name, roff_name[tok], len) != 0 ||
3783: roff_name[tok][len] != '\0')
3784: continue;
3785: if (*deftype & ROFFDEF_STD) {
3786: *deftype = ROFFDEF_STD;
3787: return NULL;
3788: } else {
3789: found = 1;
3790: break;
1.315 schwarze 3791: }
3792: }
3793: }
1.325 schwarze 3794: if (r->man->macroset != MACROSET_MDOC) {
3795: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3796: if (strncmp(name, roff_name[tok], len) != 0 ||
3797: roff_name[tok][len] != '\0')
3798: continue;
3799: if (*deftype & ROFFDEF_STD) {
3800: *deftype = ROFFDEF_STD;
3801: return NULL;
3802: } else {
3803: found = 1;
3804: break;
1.315 schwarze 3805: }
3806: }
1.325 schwarze 3807: }
3808:
3809: if (found == 0 && *deftype != ROFFDEF_ANY) {
3810: if (*deftype & ROFFDEF_REN) {
3811: /*
3812: * This might still be a request,
3813: * so do not treat it as undefined yet.
3814: */
3815: *deftype = ROFFDEF_UNDEF;
3816: return NULL;
1.315 schwarze 3817: }
1.325 schwarze 3818:
3819: /* Using an undefined string defines it to be empty. */
3820:
3821: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3822: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 3823: }
1.325 schwarze 3824:
1.315 schwarze 3825: *deftype = 0;
1.277 schwarze 3826: return NULL;
1.92 schwarze 3827: }
3828:
1.94 kristaps 3829: static void
1.167 kristaps 3830: roff_freestr(struct roffkv *r)
1.92 schwarze 3831: {
1.166 kristaps 3832: struct roffkv *n, *nn;
1.92 schwarze 3833:
1.167 kristaps 3834: for (n = r; n; n = nn) {
1.166 kristaps 3835: free(n->key.p);
3836: free(n->val.p);
1.92 schwarze 3837: nn = n->next;
3838: free(n);
3839: }
1.114 kristaps 3840: }
1.266 schwarze 3841:
3842: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 3843:
3844: /*
3845: * Duplicate an input string, making the appropriate character
3846: * conversations (as stipulated by `tr') along the way.
3847: * Returns a heap-allocated string with all the replacements made.
3848: */
3849: char *
3850: roff_strdup(const struct roff *r, const char *p)
3851: {
1.166 kristaps 3852: const struct roffkv *cp;
1.164 kristaps 3853: char *res;
3854: const char *pp;
3855: size_t ssz, sz;
3856: enum mandoc_esc esc;
3857:
1.167 kristaps 3858: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3859: return mandoc_strdup(p);
1.164 kristaps 3860: else if ('\0' == *p)
1.277 schwarze 3861: return mandoc_strdup("");
1.164 kristaps 3862:
3863: /*
3864: * Step through each character looking for term matches
3865: * (remember that a `tr' can be invoked with an escape, which is
3866: * a glyph but the escape is multi-character).
3867: * We only do this if the character hash has been initialised
3868: * and the string is >0 length.
3869: */
3870:
3871: res = NULL;
3872: ssz = 0;
3873:
3874: while ('\0' != *p) {
1.289 schwarze 3875: assert((unsigned int)*p < 128);
3876: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3877: sz = r->xtab[(int)*p].sz;
3878: res = mandoc_realloc(res, ssz + sz + 1);
3879: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3880: ssz += sz;
3881: p++;
3882: continue;
3883: } else if ('\\' != *p) {
3884: res = mandoc_realloc(res, ssz + 2);
3885: res[ssz++] = *p++;
3886: continue;
3887: }
3888:
1.164 kristaps 3889: /* Search for term matches. */
1.167 kristaps 3890: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3891: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3892: break;
3893:
3894: if (NULL != cp) {
3895: /*
3896: * A match has been found.
3897: * Append the match to the array and move
3898: * forward by its keysize.
3899: */
1.207 schwarze 3900: res = mandoc_realloc(res,
3901: ssz + cp->val.sz + 1);
1.166 kristaps 3902: memcpy(res + ssz, cp->val.p, cp->val.sz);
3903: ssz += cp->val.sz;
3904: p += (int)cp->key.sz;
1.164 kristaps 3905: continue;
3906: }
3907:
1.167 kristaps 3908: /*
3909: * Handle escapes carefully: we need to copy
3910: * over just the escape itself, or else we might
3911: * do replacements within the escape itself.
3912: * Make sure to pass along the bogus string.
3913: */
3914: pp = p++;
3915: esc = mandoc_escape(&p, NULL, NULL);
3916: if (ESCAPE_ERROR == esc) {
3917: sz = strlen(pp);
1.164 kristaps 3918: res = mandoc_realloc(res, ssz + sz + 1);
3919: memcpy(res + ssz, pp, sz);
1.167 kristaps 3920: break;
1.164 kristaps 3921: }
1.207 schwarze 3922: /*
3923: * We bail out on bad escapes.
1.167 kristaps 3924: * No need to warn: we already did so when
3925: * roff_res() was called.
3926: */
3927: sz = (int)(p - pp);
3928: res = mandoc_realloc(res, ssz + sz + 1);
3929: memcpy(res + ssz, pp, sz);
3930: ssz += sz;
1.164 kristaps 3931: }
3932:
3933: res[(int)ssz] = '\0';
1.277 schwarze 3934: return res;
1.227 schwarze 3935: }
3936:
3937: int
3938: roff_getformat(const struct roff *r)
3939: {
3940:
1.277 schwarze 3941: return r->format;
1.174 kristaps 3942: }
3943:
3944: /*
1.207 schwarze 3945: * Find out whether a line is a macro line or not.
1.174 kristaps 3946: * If it is, adjust the current position and return one; if it isn't,
3947: * return zero and don't change the current position.
3948: * If the control character has been set with `.cc', then let that grain
3949: * precedence.
3950: * This is slighly contrary to groff, where using the non-breaking
3951: * control character when `cc' has been invoked will cause the
3952: * non-breaking macro contents to be printed verbatim.
3953: */
3954: int
3955: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3956: {
3957: int pos;
3958:
3959: pos = *ppos;
3960:
1.303 schwarze 3961: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 3962: pos++;
1.303 schwarze 3963: else if (r->control != '\0')
1.277 schwarze 3964: return 0;
1.174 kristaps 3965: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3966: pos += 2;
3967: else if ('.' == cp[pos] || '\'' == cp[pos])
3968: pos++;
3969: else
1.277 schwarze 3970: return 0;
1.174 kristaps 3971:
3972: while (' ' == cp[pos] || '\t' == cp[pos])
3973: pos++;
3974:
3975: *ppos = pos;
1.277 schwarze 3976: return 1;
1.74 kristaps 3977: }
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