| 1 | /* $Id: mdoc_macro.c,v 1.38 2009/10/26 17:05:44 kristaps Exp $ */ |
| 2 | /* |
| 3 | * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se> |
| 4 | * |
| 5 | * Permission to use, copy, modify, and distribute this software for any |
| 6 | * purpose with or without fee is hereby granted, provided that the above |
| 7 | * copyright notice and this permission notice appear in all copies. |
| 8 | * |
| 9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 16 | */ |
| 17 | #include <assert.h> |
| 18 | #include <ctype.h> |
| 19 | #include <stdlib.h> |
| 20 | #include <stdio.h> |
| 21 | #include <string.h> |
| 22 | #include <time.h> |
| 23 | |
| 24 | #include "libmdoc.h" |
| 25 | |
| 26 | #define REWIND_REWIND (1 << 0) |
| 27 | #define REWIND_NOHALT (1 << 1) |
| 28 | #define REWIND_HALT (1 << 2) |
| 29 | |
| 30 | static int obsolete(MACRO_PROT_ARGS); |
| 31 | static int blk_part_exp(MACRO_PROT_ARGS); |
| 32 | static int in_line_eoln(MACRO_PROT_ARGS); |
| 33 | static int in_line_argn(MACRO_PROT_ARGS); |
| 34 | static int in_line(MACRO_PROT_ARGS); |
| 35 | static int blk_full(MACRO_PROT_ARGS); |
| 36 | static int blk_exp_close(MACRO_PROT_ARGS); |
| 37 | static int blk_part_imp(MACRO_PROT_ARGS); |
| 38 | |
| 39 | static int phrase(struct mdoc *, int, int, char *); |
| 40 | static int rew_dohalt(int, enum mdoc_type, |
| 41 | const struct mdoc_node *); |
| 42 | static int rew_alt(int); |
| 43 | static int rew_dobreak(int, const struct mdoc_node *); |
| 44 | static int rew_elem(struct mdoc *, int); |
| 45 | static int rew_sub(enum mdoc_type, struct mdoc *, |
| 46 | int, int, int); |
| 47 | static int rew_last(struct mdoc *, |
| 48 | const struct mdoc_node *); |
| 49 | static int append_delims(struct mdoc *, int, int *, char *); |
| 50 | static int lookup(int, const char *); |
| 51 | static int lookup_raw(const char *); |
| 52 | static int swarn(struct mdoc *, enum mdoc_type, int, int, |
| 53 | const struct mdoc_node *); |
| 54 | |
| 55 | /* Central table of library: who gets parsed how. */ |
| 56 | |
| 57 | const struct mdoc_macro __mdoc_macros[MDOC_MAX] = { |
| 58 | { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ap */ |
| 59 | { in_line_eoln, MDOC_PROLOGUE }, /* Dd */ |
| 60 | { in_line_eoln, MDOC_PROLOGUE }, /* Dt */ |
| 61 | { in_line_eoln, MDOC_PROLOGUE }, /* Os */ |
| 62 | { blk_full, 0 }, /* Sh */ |
| 63 | { blk_full, 0 }, /* Ss */ |
| 64 | { in_line_eoln, 0 }, /* Pp */ |
| 65 | { blk_part_imp, MDOC_PARSED }, /* D1 */ |
| 66 | { blk_part_imp, MDOC_PARSED }, /* Dl */ |
| 67 | { blk_full, MDOC_EXPLICIT }, /* Bd */ |
| 68 | { blk_exp_close, MDOC_EXPLICIT }, /* Ed */ |
| 69 | { blk_full, MDOC_EXPLICIT }, /* Bl */ |
| 70 | { blk_exp_close, MDOC_EXPLICIT }, /* El */ |
| 71 | { blk_full, MDOC_PARSED }, /* It */ |
| 72 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */ |
| 73 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* An */ |
| 74 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */ |
| 75 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cd */ |
| 76 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */ |
| 77 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */ |
| 78 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */ |
| 79 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */ |
| 80 | { in_line_eoln, 0 }, /* Ex */ |
| 81 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */ |
| 82 | { in_line_eoln, 0 }, /* Fd */ |
| 83 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */ |
| 84 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */ |
| 85 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */ |
| 86 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ic */ |
| 87 | { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */ |
| 88 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Li */ |
| 89 | { blk_full, 0 }, /* Nd */ |
| 90 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */ |
| 91 | { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */ |
| 92 | { obsolete, 0 }, /* Ot */ |
| 93 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */ |
| 94 | { in_line_eoln, 0 }, /* Rv */ |
| 95 | { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */ |
| 96 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */ |
| 97 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */ |
| 98 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */ |
| 99 | { in_line_eoln, 0 }, /* %A */ |
| 100 | { in_line_eoln, 0 }, /* %B */ |
| 101 | { in_line_eoln, 0 }, /* %D */ |
| 102 | { in_line_eoln, 0 }, /* %I */ |
| 103 | { in_line_eoln, 0 }, /* %J */ |
| 104 | { in_line_eoln, 0 }, /* %N */ |
| 105 | { in_line_eoln, 0 }, /* %O */ |
| 106 | { in_line_eoln, 0 }, /* %P */ |
| 107 | { in_line_eoln, 0 }, /* %R */ |
| 108 | { in_line_eoln, 0 }, /* %T */ |
| 109 | { in_line_eoln, 0 }, /* %V */ |
| 110 | { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ac */ |
| 111 | { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ao */ |
| 112 | { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Aq */ |
| 113 | { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */ |
| 114 | { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Bc */ |
| 115 | { blk_full, MDOC_EXPLICIT }, /* Bf */ |
| 116 | { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bo */ |
| 117 | { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Bq */ |
| 118 | { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */ |
| 119 | { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */ |
| 120 | { in_line_eoln, 0 }, /* Db */ |
| 121 | { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Dc */ |
| 122 | { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Do */ |
| 123 | { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Dq */ |
| 124 | { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ec */ |
| 125 | { blk_exp_close, MDOC_EXPLICIT }, /* Ef */ |
| 126 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Em */ |
| 127 | { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */ |
| 128 | { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */ |
| 129 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */ |
| 130 | { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* No */ |
| 131 | { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ns */ |
| 132 | { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */ |
| 133 | { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */ |
| 134 | { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Pc */ |
| 135 | { in_line_argn, MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */ |
| 136 | { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Po */ |
| 137 | { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Pq */ |
| 138 | { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Qc */ |
| 139 | { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Ql */ |
| 140 | { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Qo */ |
| 141 | { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Qq */ |
| 142 | { blk_exp_close, MDOC_EXPLICIT }, /* Re */ |
| 143 | { blk_full, MDOC_EXPLICIT }, /* Rs */ |
| 144 | { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Sc */ |
| 145 | { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* So */ |
| 146 | { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Sq */ |
| 147 | { in_line_eoln, 0 }, /* Sm */ |
| 148 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sx */ |
| 149 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sy */ |
| 150 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */ |
| 151 | { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ux */ |
| 152 | { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */ |
| 153 | { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */ |
| 154 | { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */ |
| 155 | { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Fc */ |
| 156 | { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Oo */ |
| 157 | { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Oc */ |
| 158 | { blk_full, MDOC_EXPLICIT }, /* Bk */ |
| 159 | { blk_exp_close, MDOC_EXPLICIT }, /* Ek */ |
| 160 | { in_line_eoln, 0 }, /* Bt */ |
| 161 | { in_line_eoln, 0 }, /* Hf */ |
| 162 | { obsolete, 0 }, /* Fr */ |
| 163 | { in_line_eoln, 0 }, /* Ud */ |
| 164 | { in_line_eoln, 0 }, /* Lb */ |
| 165 | { in_line_eoln, 0 }, /* Lp */ |
| 166 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */ |
| 167 | { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */ |
| 168 | { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Brq */ |
| 169 | { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bro */ |
| 170 | { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Brc */ |
| 171 | { in_line_eoln, 0 }, /* %C */ |
| 172 | { obsolete, 0 }, /* Es */ |
| 173 | { obsolete, 0 }, /* En */ |
| 174 | { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */ |
| 175 | { in_line_eoln, 0 }, /* %Q */ |
| 176 | { in_line_eoln, 0 }, /* br */ |
| 177 | { in_line_eoln, 0 }, /* sp */ |
| 178 | { in_line_eoln, 0 }, /* %U */ |
| 179 | }; |
| 180 | |
| 181 | const struct mdoc_macro * const mdoc_macros = __mdoc_macros; |
| 182 | |
| 183 | |
| 184 | static int |
| 185 | swarn(struct mdoc *mdoc, enum mdoc_type type, |
| 186 | int line, int pos, const struct mdoc_node *p) |
| 187 | { |
| 188 | const char *n, *t, *tt; |
| 189 | |
| 190 | n = t = "<root>"; |
| 191 | tt = "block"; |
| 192 | |
| 193 | switch (type) { |
| 194 | case (MDOC_BODY): |
| 195 | tt = "multi-line"; |
| 196 | break; |
| 197 | case (MDOC_HEAD): |
| 198 | tt = "line"; |
| 199 | break; |
| 200 | default: |
| 201 | break; |
| 202 | } |
| 203 | |
| 204 | switch (p->type) { |
| 205 | case (MDOC_BLOCK): |
| 206 | n = mdoc_macronames[p->tok]; |
| 207 | t = "block"; |
| 208 | break; |
| 209 | case (MDOC_BODY): |
| 210 | n = mdoc_macronames[p->tok]; |
| 211 | t = "multi-line"; |
| 212 | break; |
| 213 | case (MDOC_HEAD): |
| 214 | n = mdoc_macronames[p->tok]; |
| 215 | t = "line"; |
| 216 | break; |
| 217 | default: |
| 218 | break; |
| 219 | } |
| 220 | |
| 221 | if ( ! (MDOC_IGN_SCOPE & mdoc->pflags)) |
| 222 | return(mdoc_verr(mdoc, line, pos, |
| 223 | "%s scope breaks %s scope of %s", |
| 224 | tt, t, n)); |
| 225 | return(mdoc_vwarn(mdoc, line, pos, |
| 226 | "%s scope breaks %s scope of %s", |
| 227 | tt, t, n)); |
| 228 | } |
| 229 | |
| 230 | |
| 231 | /* |
| 232 | * This is called at the end of parsing. It must traverse up the tree, |
| 233 | * closing out open [implicit] scopes. Obviously, open explicit scopes |
| 234 | * are errors. |
| 235 | */ |
| 236 | int |
| 237 | mdoc_macroend(struct mdoc *m) |
| 238 | { |
| 239 | struct mdoc_node *n; |
| 240 | |
| 241 | /* Scan for open explicit scopes. */ |
| 242 | |
| 243 | n = MDOC_VALID & m->last->flags ? m->last->parent : m->last; |
| 244 | |
| 245 | for ( ; n; n = n->parent) { |
| 246 | if (MDOC_BLOCK != n->type) |
| 247 | continue; |
| 248 | if ( ! (MDOC_EXPLICIT & mdoc_macros[n->tok].flags)) |
| 249 | continue; |
| 250 | return(mdoc_nerr(m, n, EOPEN)); |
| 251 | } |
| 252 | |
| 253 | /* Rewind to the first. */ |
| 254 | |
| 255 | return(rew_last(m, m->first)); |
| 256 | } |
| 257 | |
| 258 | |
| 259 | /* |
| 260 | * Look up a macro from within a subsequent context. |
| 261 | */ |
| 262 | static int |
| 263 | lookup(int from, const char *p) |
| 264 | { |
| 265 | /* FIXME: make -diag lists be un-PARSED. */ |
| 266 | |
| 267 | if ( ! (MDOC_PARSED & mdoc_macros[from].flags)) |
| 268 | return(MDOC_MAX); |
| 269 | return(lookup_raw(p)); |
| 270 | } |
| 271 | |
| 272 | |
| 273 | /* |
| 274 | * Lookup a macro following the initial line macro. |
| 275 | */ |
| 276 | static int |
| 277 | lookup_raw(const char *p) |
| 278 | { |
| 279 | int res; |
| 280 | |
| 281 | if (MDOC_MAX == (res = mdoc_hash_find(p))) |
| 282 | return(MDOC_MAX); |
| 283 | if (MDOC_CALLABLE & mdoc_macros[res].flags) |
| 284 | return(res); |
| 285 | return(MDOC_MAX); |
| 286 | } |
| 287 | |
| 288 | |
| 289 | static int |
| 290 | rew_last(struct mdoc *mdoc, const struct mdoc_node *to) |
| 291 | { |
| 292 | |
| 293 | assert(to); |
| 294 | mdoc->next = MDOC_NEXT_SIBLING; |
| 295 | |
| 296 | /* LINTED */ |
| 297 | while (mdoc->last != to) { |
| 298 | if ( ! mdoc_valid_post(mdoc)) |
| 299 | return(0); |
| 300 | if ( ! mdoc_action_post(mdoc)) |
| 301 | return(0); |
| 302 | mdoc->last = mdoc->last->parent; |
| 303 | assert(mdoc->last); |
| 304 | } |
| 305 | |
| 306 | if ( ! mdoc_valid_post(mdoc)) |
| 307 | return(0); |
| 308 | return(mdoc_action_post(mdoc)); |
| 309 | } |
| 310 | |
| 311 | |
| 312 | /* |
| 313 | * Return the opening macro of a closing one, e.g., `Ec' has `Eo' as its |
| 314 | * matching pair. |
| 315 | */ |
| 316 | static int |
| 317 | rew_alt(int tok) |
| 318 | { |
| 319 | switch (tok) { |
| 320 | case (MDOC_Ac): |
| 321 | return(MDOC_Ao); |
| 322 | case (MDOC_Bc): |
| 323 | return(MDOC_Bo); |
| 324 | case (MDOC_Brc): |
| 325 | return(MDOC_Bro); |
| 326 | case (MDOC_Dc): |
| 327 | return(MDOC_Do); |
| 328 | case (MDOC_Ec): |
| 329 | return(MDOC_Eo); |
| 330 | case (MDOC_Ed): |
| 331 | return(MDOC_Bd); |
| 332 | case (MDOC_Ef): |
| 333 | return(MDOC_Bf); |
| 334 | case (MDOC_Ek): |
| 335 | return(MDOC_Bk); |
| 336 | case (MDOC_El): |
| 337 | return(MDOC_Bl); |
| 338 | case (MDOC_Fc): |
| 339 | return(MDOC_Fo); |
| 340 | case (MDOC_Oc): |
| 341 | return(MDOC_Oo); |
| 342 | case (MDOC_Pc): |
| 343 | return(MDOC_Po); |
| 344 | case (MDOC_Qc): |
| 345 | return(MDOC_Qo); |
| 346 | case (MDOC_Re): |
| 347 | return(MDOC_Rs); |
| 348 | case (MDOC_Sc): |
| 349 | return(MDOC_So); |
| 350 | case (MDOC_Xc): |
| 351 | return(MDOC_Xo); |
| 352 | default: |
| 353 | break; |
| 354 | } |
| 355 | abort(); |
| 356 | /* NOTREACHED */ |
| 357 | } |
| 358 | |
| 359 | |
| 360 | /* |
| 361 | * Rewind rules. This indicates whether to stop rewinding |
| 362 | * (REWIND_HALT) without touching our current scope, stop rewinding and |
| 363 | * close our current scope (REWIND_REWIND), or continue (REWIND_NOHALT). |
| 364 | * The scope-closing and so on occurs in the various rew_* routines. |
| 365 | */ |
| 366 | static int |
| 367 | rew_dohalt(int tok, enum mdoc_type type, const struct mdoc_node *p) |
| 368 | { |
| 369 | |
| 370 | if (MDOC_ROOT == p->type) |
| 371 | return(REWIND_HALT); |
| 372 | if (MDOC_VALID & p->flags) |
| 373 | return(REWIND_NOHALT); |
| 374 | |
| 375 | switch (tok) { |
| 376 | case (MDOC_Aq): |
| 377 | /* FALLTHROUGH */ |
| 378 | case (MDOC_Bq): |
| 379 | /* FALLTHROUGH */ |
| 380 | case (MDOC_Brq): |
| 381 | /* FALLTHROUGH */ |
| 382 | case (MDOC_D1): |
| 383 | /* FALLTHROUGH */ |
| 384 | case (MDOC_Dl): |
| 385 | /* FALLTHROUGH */ |
| 386 | case (MDOC_Dq): |
| 387 | /* FALLTHROUGH */ |
| 388 | case (MDOC_Op): |
| 389 | /* FALLTHROUGH */ |
| 390 | case (MDOC_Pq): |
| 391 | /* FALLTHROUGH */ |
| 392 | case (MDOC_Ql): |
| 393 | /* FALLTHROUGH */ |
| 394 | case (MDOC_Qq): |
| 395 | /* FALLTHROUGH */ |
| 396 | case (MDOC_Sq): |
| 397 | assert(MDOC_TAIL != type); |
| 398 | if (type == p->type && tok == p->tok) |
| 399 | return(REWIND_REWIND); |
| 400 | break; |
| 401 | case (MDOC_It): |
| 402 | assert(MDOC_TAIL != type); |
| 403 | if (type == p->type && tok == p->tok) |
| 404 | return(REWIND_REWIND); |
| 405 | if (MDOC_BODY == p->type && MDOC_Bl == p->tok) |
| 406 | return(REWIND_HALT); |
| 407 | break; |
| 408 | case (MDOC_Sh): |
| 409 | if (type == p->type && tok == p->tok) |
| 410 | return(REWIND_REWIND); |
| 411 | break; |
| 412 | case (MDOC_Nd): |
| 413 | /* FALLTHROUGH */ |
| 414 | case (MDOC_Ss): |
| 415 | assert(MDOC_TAIL != type); |
| 416 | if (type == p->type && tok == p->tok) |
| 417 | return(REWIND_REWIND); |
| 418 | if (MDOC_BODY == p->type && MDOC_Sh == p->tok) |
| 419 | return(REWIND_HALT); |
| 420 | break; |
| 421 | case (MDOC_Ao): |
| 422 | /* FALLTHROUGH */ |
| 423 | case (MDOC_Bd): |
| 424 | /* FALLTHROUGH */ |
| 425 | case (MDOC_Bf): |
| 426 | /* FALLTHROUGH */ |
| 427 | case (MDOC_Bk): |
| 428 | /* FALLTHROUGH */ |
| 429 | case (MDOC_Bl): |
| 430 | /* FALLTHROUGH */ |
| 431 | case (MDOC_Bo): |
| 432 | /* FALLTHROUGH */ |
| 433 | case (MDOC_Bro): |
| 434 | /* FALLTHROUGH */ |
| 435 | case (MDOC_Do): |
| 436 | /* FALLTHROUGH */ |
| 437 | case (MDOC_Eo): |
| 438 | /* FALLTHROUGH */ |
| 439 | case (MDOC_Fo): |
| 440 | /* FALLTHROUGH */ |
| 441 | case (MDOC_Oo): |
| 442 | /* FALLTHROUGH */ |
| 443 | case (MDOC_Po): |
| 444 | /* FALLTHROUGH */ |
| 445 | case (MDOC_Qo): |
| 446 | /* FALLTHROUGH */ |
| 447 | case (MDOC_Rs): |
| 448 | /* FALLTHROUGH */ |
| 449 | case (MDOC_So): |
| 450 | /* FALLTHROUGH */ |
| 451 | case (MDOC_Xo): |
| 452 | if (type == p->type && tok == p->tok) |
| 453 | return(REWIND_REWIND); |
| 454 | break; |
| 455 | /* Multi-line explicit scope close. */ |
| 456 | case (MDOC_Ac): |
| 457 | /* FALLTHROUGH */ |
| 458 | case (MDOC_Bc): |
| 459 | /* FALLTHROUGH */ |
| 460 | case (MDOC_Brc): |
| 461 | /* FALLTHROUGH */ |
| 462 | case (MDOC_Dc): |
| 463 | /* FALLTHROUGH */ |
| 464 | case (MDOC_Ec): |
| 465 | /* FALLTHROUGH */ |
| 466 | case (MDOC_Ed): |
| 467 | /* FALLTHROUGH */ |
| 468 | case (MDOC_Ek): |
| 469 | /* FALLTHROUGH */ |
| 470 | case (MDOC_El): |
| 471 | /* FALLTHROUGH */ |
| 472 | case (MDOC_Fc): |
| 473 | /* FALLTHROUGH */ |
| 474 | case (MDOC_Ef): |
| 475 | /* FALLTHROUGH */ |
| 476 | case (MDOC_Oc): |
| 477 | /* FALLTHROUGH */ |
| 478 | case (MDOC_Pc): |
| 479 | /* FALLTHROUGH */ |
| 480 | case (MDOC_Qc): |
| 481 | /* FALLTHROUGH */ |
| 482 | case (MDOC_Re): |
| 483 | /* FALLTHROUGH */ |
| 484 | case (MDOC_Sc): |
| 485 | /* FALLTHROUGH */ |
| 486 | case (MDOC_Xc): |
| 487 | if (type == p->type && rew_alt(tok) == p->tok) |
| 488 | return(REWIND_REWIND); |
| 489 | break; |
| 490 | default: |
| 491 | abort(); |
| 492 | /* NOTREACHED */ |
| 493 | } |
| 494 | |
| 495 | return(REWIND_NOHALT); |
| 496 | } |
| 497 | |
| 498 | |
| 499 | /* |
| 500 | * See if we can break an encountered scope (the rew_dohalt has returned |
| 501 | * REWIND_NOHALT). |
| 502 | */ |
| 503 | static int |
| 504 | rew_dobreak(int tok, const struct mdoc_node *p) |
| 505 | { |
| 506 | |
| 507 | assert(MDOC_ROOT != p->type); |
| 508 | if (MDOC_ELEM == p->type) |
| 509 | return(1); |
| 510 | if (MDOC_TEXT == p->type) |
| 511 | return(1); |
| 512 | if (MDOC_VALID & p->flags) |
| 513 | return(1); |
| 514 | |
| 515 | switch (tok) { |
| 516 | case (MDOC_It): |
| 517 | return(MDOC_It == p->tok); |
| 518 | case (MDOC_Nd): |
| 519 | return(MDOC_Nd == p->tok); |
| 520 | case (MDOC_Ss): |
| 521 | return(MDOC_Ss == p->tok); |
| 522 | case (MDOC_Sh): |
| 523 | if (MDOC_Nd == p->tok) |
| 524 | return(1); |
| 525 | if (MDOC_Ss == p->tok) |
| 526 | return(1); |
| 527 | return(MDOC_Sh == p->tok); |
| 528 | case (MDOC_El): |
| 529 | if (MDOC_It == p->tok) |
| 530 | return(1); |
| 531 | break; |
| 532 | case (MDOC_Oc): |
| 533 | /* XXX - experimental! */ |
| 534 | if (MDOC_Op == p->tok) |
| 535 | return(1); |
| 536 | break; |
| 537 | default: |
| 538 | break; |
| 539 | } |
| 540 | |
| 541 | if (MDOC_EXPLICIT & mdoc_macros[tok].flags) |
| 542 | return(p->tok == rew_alt(tok)); |
| 543 | else if (MDOC_BLOCK == p->type) |
| 544 | return(1); |
| 545 | |
| 546 | return(tok == p->tok); |
| 547 | } |
| 548 | |
| 549 | |
| 550 | static int |
| 551 | rew_elem(struct mdoc *mdoc, int tok) |
| 552 | { |
| 553 | struct mdoc_node *n; |
| 554 | |
| 555 | n = mdoc->last; |
| 556 | if (MDOC_ELEM != n->type) |
| 557 | n = n->parent; |
| 558 | assert(MDOC_ELEM == n->type); |
| 559 | assert(tok == n->tok); |
| 560 | |
| 561 | return(rew_last(mdoc, n)); |
| 562 | } |
| 563 | |
| 564 | |
| 565 | static int |
| 566 | rew_sub(enum mdoc_type t, struct mdoc *m, |
| 567 | int tok, int line, int ppos) |
| 568 | { |
| 569 | struct mdoc_node *n; |
| 570 | int c; |
| 571 | |
| 572 | /* LINTED */ |
| 573 | for (n = m->last; n; n = n->parent) { |
| 574 | c = rew_dohalt(tok, t, n); |
| 575 | if (REWIND_HALT == c) { |
| 576 | if (MDOC_BLOCK != t) |
| 577 | return(1); |
| 578 | if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) |
| 579 | return(1); |
| 580 | return(mdoc_perr(m, line, ppos, ENOCTX)); |
| 581 | } |
| 582 | if (REWIND_REWIND == c) |
| 583 | break; |
| 584 | else if (rew_dobreak(tok, n)) |
| 585 | continue; |
| 586 | if ( ! swarn(m, t, line, ppos, n)) |
| 587 | return(0); |
| 588 | } |
| 589 | |
| 590 | assert(n); |
| 591 | return(rew_last(m, n)); |
| 592 | } |
| 593 | |
| 594 | |
| 595 | static int |
| 596 | append_delims(struct mdoc *mdoc, int line, int *pos, char *buf) |
| 597 | { |
| 598 | int c, lastarg; |
| 599 | char *p; |
| 600 | |
| 601 | if (0 == buf[*pos]) |
| 602 | return(1); |
| 603 | |
| 604 | for (;;) { |
| 605 | lastarg = *pos; |
| 606 | c = mdoc_zargs(mdoc, line, pos, buf, ARGS_NOWARN, &p); |
| 607 | assert(ARGS_PHRASE != c); |
| 608 | |
| 609 | if (ARGS_ERROR == c) |
| 610 | return(0); |
| 611 | else if (ARGS_EOLN == c) |
| 612 | break; |
| 613 | assert(mdoc_isdelim(p)); |
| 614 | if ( ! mdoc_word_alloc(mdoc, line, lastarg, p)) |
| 615 | return(0); |
| 616 | } |
| 617 | |
| 618 | return(1); |
| 619 | } |
| 620 | |
| 621 | |
| 622 | /* |
| 623 | * Close out block partial/full explicit. |
| 624 | */ |
| 625 | static int |
| 626 | blk_exp_close(MACRO_PROT_ARGS) |
| 627 | { |
| 628 | int j, c, lastarg, maxargs, flushed; |
| 629 | char *p; |
| 630 | |
| 631 | switch (tok) { |
| 632 | case (MDOC_Ec): |
| 633 | maxargs = 1; |
| 634 | break; |
| 635 | default: |
| 636 | maxargs = 0; |
| 637 | break; |
| 638 | } |
| 639 | |
| 640 | if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) { |
| 641 | if (buf[*pos]) |
| 642 | if ( ! mdoc_pwarn(m, line, ppos, ENOLINE)) |
| 643 | return(0); |
| 644 | |
| 645 | if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos)) |
| 646 | return(0); |
| 647 | return(rew_sub(MDOC_BLOCK, m, tok, line, ppos)); |
| 648 | } |
| 649 | |
| 650 | if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos)) |
| 651 | return(0); |
| 652 | |
| 653 | if (maxargs > 0) |
| 654 | if ( ! mdoc_tail_alloc(m, line, ppos, rew_alt(tok))) |
| 655 | return(0); |
| 656 | |
| 657 | for (flushed = j = 0; ; j++) { |
| 658 | lastarg = *pos; |
| 659 | |
| 660 | if (j == maxargs && ! flushed) { |
| 661 | if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos)) |
| 662 | return(0); |
| 663 | flushed = 1; |
| 664 | } |
| 665 | |
| 666 | c = mdoc_args(m, line, pos, buf, tok, &p); |
| 667 | |
| 668 | if (ARGS_ERROR == c) |
| 669 | return(0); |
| 670 | if (ARGS_PUNCT == c) |
| 671 | break; |
| 672 | if (ARGS_EOLN == c) |
| 673 | break; |
| 674 | |
| 675 | if (MDOC_MAX != (c = lookup(tok, p))) { |
| 676 | if ( ! flushed) { |
| 677 | if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos)) |
| 678 | return(0); |
| 679 | flushed = 1; |
| 680 | } |
| 681 | if ( ! mdoc_macro(m, c, line, lastarg, pos, buf)) |
| 682 | return(0); |
| 683 | break; |
| 684 | } |
| 685 | |
| 686 | if ( ! mdoc_word_alloc(m, line, lastarg, p)) |
| 687 | return(0); |
| 688 | } |
| 689 | |
| 690 | if ( ! flushed && ! rew_sub(MDOC_BLOCK, m, tok, line, ppos)) |
| 691 | return(0); |
| 692 | |
| 693 | if (ppos > 1) |
| 694 | return(1); |
| 695 | return(append_delims(m, line, pos, buf)); |
| 696 | } |
| 697 | |
| 698 | |
| 699 | static int |
| 700 | in_line(MACRO_PROT_ARGS) |
| 701 | { |
| 702 | int la, lastpunct, c, w, cnt, d, nc; |
| 703 | struct mdoc_arg *arg; |
| 704 | char *p; |
| 705 | |
| 706 | /* |
| 707 | * Whether we allow ignored elements (those without content, |
| 708 | * usually because of reserved words) to squeak by. |
| 709 | */ |
| 710 | switch (tok) { |
| 711 | case (MDOC_An): |
| 712 | /* FALLTHROUGH */ |
| 713 | case (MDOC_Ar): |
| 714 | /* FALLTHROUGH */ |
| 715 | case (MDOC_Fl): |
| 716 | /* FALLTHROUGH */ |
| 717 | case (MDOC_Lk): |
| 718 | /* FALLTHROUGH */ |
| 719 | case (MDOC_Nm): |
| 720 | /* FALLTHROUGH */ |
| 721 | case (MDOC_Pa): |
| 722 | nc = 1; |
| 723 | break; |
| 724 | default: |
| 725 | nc = 0; |
| 726 | break; |
| 727 | } |
| 728 | |
| 729 | for (arg = NULL;; ) { |
| 730 | la = *pos; |
| 731 | c = mdoc_argv(m, line, tok, &arg, pos, buf); |
| 732 | |
| 733 | if (ARGV_WORD == c) { |
| 734 | *pos = la; |
| 735 | break; |
| 736 | } |
| 737 | if (ARGV_EOLN == c) |
| 738 | break; |
| 739 | if (ARGV_ARG == c) |
| 740 | continue; |
| 741 | |
| 742 | mdoc_argv_free(arg); |
| 743 | return(0); |
| 744 | } |
| 745 | |
| 746 | for (cnt = 0, lastpunct = 1;; ) { |
| 747 | la = *pos; |
| 748 | w = mdoc_args(m, line, pos, buf, tok, &p); |
| 749 | |
| 750 | if (ARGS_ERROR == w) |
| 751 | return(0); |
| 752 | if (ARGS_EOLN == w) |
| 753 | break; |
| 754 | if (ARGS_PUNCT == w) |
| 755 | break; |
| 756 | |
| 757 | /* Quoted words shouldn't be looked-up. */ |
| 758 | |
| 759 | c = ARGS_QWORD == w ? MDOC_MAX : lookup(tok, p); |
| 760 | |
| 761 | /* |
| 762 | * In this case, we've located a submacro and must |
| 763 | * execute it. Close out scope, if open. If no |
| 764 | * elements have been generated, either create one (nc) |
| 765 | * or raise a warning. |
| 766 | */ |
| 767 | |
| 768 | if (MDOC_MAX != c) { |
| 769 | if (0 == lastpunct && ! rew_elem(m, tok)) |
| 770 | return(0); |
| 771 | if (nc && 0 == cnt) { |
| 772 | if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg)) |
| 773 | return(0); |
| 774 | if ( ! rew_last(m, m->last)) |
| 775 | return(0); |
| 776 | } else if ( ! nc && 0 == cnt) { |
| 777 | mdoc_argv_free(arg); |
| 778 | if ( ! mdoc_pwarn(m, line, ppos, EIGNE)) |
| 779 | return(0); |
| 780 | } |
| 781 | c = mdoc_macro(m, c, line, la, pos, buf); |
| 782 | if (0 == c) |
| 783 | return(0); |
| 784 | if (ppos > 1) |
| 785 | return(1); |
| 786 | return(append_delims(m, line, pos, buf)); |
| 787 | } |
| 788 | |
| 789 | /* |
| 790 | * Non-quote-enclosed punctuation. Set up our scope, if |
| 791 | * a word; rewind the scope, if a delimiter; then append |
| 792 | * the word. |
| 793 | */ |
| 794 | |
| 795 | d = mdoc_isdelim(p); |
| 796 | |
| 797 | if (ARGS_QWORD != w && d) { |
| 798 | if (0 == lastpunct && ! rew_elem(m, tok)) |
| 799 | return(0); |
| 800 | lastpunct = 1; |
| 801 | } else if (lastpunct) { |
| 802 | if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg)) |
| 803 | return(0); |
| 804 | lastpunct = 0; |
| 805 | } |
| 806 | |
| 807 | if ( ! d) |
| 808 | cnt++; |
| 809 | if ( ! mdoc_word_alloc(m, line, la, p)) |
| 810 | return(0); |
| 811 | } |
| 812 | |
| 813 | if (0 == lastpunct && ! rew_elem(m, tok)) |
| 814 | return(0); |
| 815 | |
| 816 | /* |
| 817 | * If no elements have been collected and we're allowed to have |
| 818 | * empties (nc), open a scope and close it out. Otherwise, |
| 819 | * raise a warning. |
| 820 | * |
| 821 | */ |
| 822 | if (nc && 0 == cnt) { |
| 823 | if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg)) |
| 824 | return(0); |
| 825 | if ( ! rew_last(m, m->last)) |
| 826 | return(0); |
| 827 | } else if ( ! nc && 0 == cnt) { |
| 828 | mdoc_argv_free(arg); |
| 829 | if ( ! mdoc_pwarn(m, line, ppos, EIGNE)) |
| 830 | return(0); |
| 831 | } |
| 832 | |
| 833 | if (ppos > 1) |
| 834 | return(1); |
| 835 | return(append_delims(m, line, pos, buf)); |
| 836 | } |
| 837 | |
| 838 | |
| 839 | static int |
| 840 | blk_full(MACRO_PROT_ARGS) |
| 841 | { |
| 842 | int c, lastarg, reopen, dohead; |
| 843 | struct mdoc_arg *arg; |
| 844 | char *p; |
| 845 | |
| 846 | /* |
| 847 | * Whether to process a block-head section. If this is |
| 848 | * non-zero, then a head will be opened for all line arguments. |
| 849 | * If not, then the head will always be empty and only a body |
| 850 | * will be opened, which will stay open at the eoln. |
| 851 | */ |
| 852 | |
| 853 | switch (tok) { |
| 854 | case (MDOC_Nd): |
| 855 | dohead = 0; |
| 856 | break; |
| 857 | default: |
| 858 | dohead = 1; |
| 859 | break; |
| 860 | } |
| 861 | |
| 862 | if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) { |
| 863 | if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos)) |
| 864 | return(0); |
| 865 | if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos)) |
| 866 | return(0); |
| 867 | } |
| 868 | |
| 869 | for (arg = NULL;; ) { |
| 870 | lastarg = *pos; |
| 871 | c = mdoc_argv(m, line, tok, &arg, pos, buf); |
| 872 | |
| 873 | if (ARGV_WORD == c) { |
| 874 | *pos = lastarg; |
| 875 | break; |
| 876 | } |
| 877 | |
| 878 | if (ARGV_EOLN == c) |
| 879 | break; |
| 880 | if (ARGV_ARG == c) |
| 881 | continue; |
| 882 | |
| 883 | mdoc_argv_free(arg); |
| 884 | return(0); |
| 885 | } |
| 886 | |
| 887 | if ( ! mdoc_block_alloc(m, line, ppos, tok, arg)) |
| 888 | return(0); |
| 889 | |
| 890 | if (0 == buf[*pos]) { |
| 891 | if ( ! mdoc_head_alloc(m, line, ppos, tok)) |
| 892 | return(0); |
| 893 | if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos)) |
| 894 | return(0); |
| 895 | if ( ! mdoc_body_alloc(m, line, ppos, tok)) |
| 896 | return(0); |
| 897 | return(1); |
| 898 | } |
| 899 | |
| 900 | if ( ! mdoc_head_alloc(m, line, ppos, tok)) |
| 901 | return(0); |
| 902 | |
| 903 | /* Immediately close out head and enter body, if applicable. */ |
| 904 | |
| 905 | if (0 == dohead) { |
| 906 | if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos)) |
| 907 | return(0); |
| 908 | if ( ! mdoc_body_alloc(m, line, ppos, tok)) |
| 909 | return(0); |
| 910 | } |
| 911 | |
| 912 | for (reopen = 0;; ) { |
| 913 | lastarg = *pos; |
| 914 | c = mdoc_args(m, line, pos, buf, tok, &p); |
| 915 | |
| 916 | if (ARGS_ERROR == c) |
| 917 | return(0); |
| 918 | if (ARGS_EOLN == c) |
| 919 | break; |
| 920 | if (ARGS_PHRASE == c) { |
| 921 | assert(dohead); |
| 922 | if (reopen && ! mdoc_head_alloc(m, line, ppos, tok)) |
| 923 | return(0); |
| 924 | /* |
| 925 | * Phrases are self-contained macro phrases used |
| 926 | * in the columnar output of a macro. They need |
| 927 | * special handling. |
| 928 | */ |
| 929 | if ( ! phrase(m, line, lastarg, buf)) |
| 930 | return(0); |
| 931 | if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos)) |
| 932 | return(0); |
| 933 | |
| 934 | reopen = 1; |
| 935 | continue; |
| 936 | } |
| 937 | |
| 938 | if (MDOC_MAX == (c = lookup(tok, p))) { |
| 939 | if ( ! mdoc_word_alloc(m, line, lastarg, p)) |
| 940 | return(0); |
| 941 | continue; |
| 942 | } |
| 943 | |
| 944 | if ( ! mdoc_macro(m, c, line, lastarg, pos, buf)) |
| 945 | return(0); |
| 946 | break; |
| 947 | } |
| 948 | |
| 949 | if (1 == ppos && ! append_delims(m, line, pos, buf)) |
| 950 | return(0); |
| 951 | |
| 952 | /* If the body's already open, then just return. */ |
| 953 | if (0 == dohead) |
| 954 | return(1); |
| 955 | |
| 956 | if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos)) |
| 957 | return(0); |
| 958 | if ( ! mdoc_body_alloc(m, line, ppos, tok)) |
| 959 | return(0); |
| 960 | |
| 961 | return(1); |
| 962 | } |
| 963 | |
| 964 | |
| 965 | static int |
| 966 | blk_part_imp(MACRO_PROT_ARGS) |
| 967 | { |
| 968 | int la, c; |
| 969 | char *p; |
| 970 | struct mdoc_node *blk, *body, *n; |
| 971 | |
| 972 | /* If applicable, close out prior scopes. */ |
| 973 | |
| 974 | if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL)) |
| 975 | return(0); |
| 976 | /* Saved for later close-out. */ |
| 977 | blk = m->last; |
| 978 | if ( ! mdoc_head_alloc(m, line, ppos, tok)) |
| 979 | return(0); |
| 980 | if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos)) |
| 981 | return(0); |
| 982 | if ( ! mdoc_body_alloc(m, line, ppos, tok)) |
| 983 | return(0); |
| 984 | /* Saved for later close-out. */ |
| 985 | body = m->last; |
| 986 | |
| 987 | /* Body argument processing. */ |
| 988 | |
| 989 | for (;;) { |
| 990 | la = *pos; |
| 991 | c = mdoc_args(m, line, pos, buf, tok, &p); |
| 992 | assert(ARGS_PHRASE != c); |
| 993 | |
| 994 | if (ARGS_ERROR == c) |
| 995 | return(0); |
| 996 | if (ARGS_PUNCT == c) |
| 997 | break; |
| 998 | if (ARGS_EOLN == c) |
| 999 | break; |
| 1000 | |
| 1001 | if (MDOC_MAX == (c = lookup(tok, p))) { |
| 1002 | if ( ! mdoc_word_alloc(m, line, la, p)) |
| 1003 | return(0); |
| 1004 | continue; |
| 1005 | } |
| 1006 | |
| 1007 | if ( ! mdoc_macro(m, c, line, la, pos, buf)) |
| 1008 | return(0); |
| 1009 | break; |
| 1010 | } |
| 1011 | |
| 1012 | /* |
| 1013 | * If we can't rewind to our body, then our scope has already |
| 1014 | * been closed by another macro (like `Oc' closing `Op'). This |
| 1015 | * is ugly behaviour nodding its head to OpenBSD's overwhelming |
| 1016 | * crufty use of `Op' breakage--XXX, deprecate in time. |
| 1017 | */ |
| 1018 | for (n = m->last; n; n = n->parent) |
| 1019 | if (body == n) |
| 1020 | break; |
| 1021 | if (NULL == n && ! mdoc_nwarn(m, body, EIMPBRK)) |
| 1022 | return(0); |
| 1023 | if (n && ! rew_last(m, body)) |
| 1024 | return(0); |
| 1025 | |
| 1026 | /* Standard appending of delimiters. */ |
| 1027 | |
| 1028 | if (1 == ppos && ! append_delims(m, line, pos, buf)) |
| 1029 | return(0); |
| 1030 | |
| 1031 | /* Rewind scope, if applicable. */ |
| 1032 | |
| 1033 | if (n && ! rew_last(m, blk)) |
| 1034 | return(0); |
| 1035 | |
| 1036 | return(1); |
| 1037 | } |
| 1038 | |
| 1039 | |
| 1040 | static int |
| 1041 | blk_part_exp(MACRO_PROT_ARGS) |
| 1042 | { |
| 1043 | int la, flushed, j, c, maxargs; |
| 1044 | char *p; |
| 1045 | |
| 1046 | /* Number of head arguments. Only `Eo' has these, */ |
| 1047 | |
| 1048 | switch (tok) { |
| 1049 | case (MDOC_Eo): |
| 1050 | maxargs = 1; |
| 1051 | break; |
| 1052 | default: |
| 1053 | maxargs = 0; |
| 1054 | break; |
| 1055 | } |
| 1056 | |
| 1057 | /* Begin the block scope. */ |
| 1058 | |
| 1059 | if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL)) |
| 1060 | return(0); |
| 1061 | |
| 1062 | /* |
| 1063 | * If no head arguments, open and then close out a head, noting |
| 1064 | * that we've flushed our terms. `flushed' means that we've |
| 1065 | * flushed out the head and the body is open. |
| 1066 | */ |
| 1067 | |
| 1068 | if (0 == maxargs) { |
| 1069 | if ( ! mdoc_head_alloc(m, line, ppos, tok)) |
| 1070 | return(0); |
| 1071 | if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos)) |
| 1072 | return(0); |
| 1073 | if ( ! mdoc_body_alloc(m, line, ppos, tok)) |
| 1074 | return(0); |
| 1075 | flushed = 1; |
| 1076 | } else { |
| 1077 | if ( ! mdoc_head_alloc(m, line, ppos, tok)) |
| 1078 | return(0); |
| 1079 | flushed = 0; |
| 1080 | } |
| 1081 | |
| 1082 | /* Process the head/head+body line arguments. */ |
| 1083 | |
| 1084 | for (j = 0; ; j++) { |
| 1085 | la = *pos; |
| 1086 | if (j == maxargs && ! flushed) { |
| 1087 | if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos)) |
| 1088 | return(0); |
| 1089 | flushed = 1; |
| 1090 | if ( ! mdoc_body_alloc(m, line, ppos, tok)) |
| 1091 | return(0); |
| 1092 | } |
| 1093 | |
| 1094 | c = mdoc_args(m, line, pos, buf, tok, &p); |
| 1095 | assert(ARGS_PHRASE != c); |
| 1096 | |
| 1097 | if (ARGS_ERROR == c) |
| 1098 | return(0); |
| 1099 | if (ARGS_PUNCT == c) |
| 1100 | break; |
| 1101 | if (ARGS_EOLN == c) |
| 1102 | break; |
| 1103 | |
| 1104 | if (MDOC_MAX != (c = lookup(tok, p))) { |
| 1105 | if ( ! flushed) { |
| 1106 | if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos)) |
| 1107 | return(0); |
| 1108 | flushed = 1; |
| 1109 | if ( ! mdoc_body_alloc(m, line, ppos, tok)) |
| 1110 | return(0); |
| 1111 | } |
| 1112 | if ( ! mdoc_macro(m, c, line, la, pos, buf)) |
| 1113 | return(0); |
| 1114 | break; |
| 1115 | } |
| 1116 | |
| 1117 | if ( ! flushed && mdoc_isdelim(p)) { |
| 1118 | if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos)) |
| 1119 | return(0); |
| 1120 | flushed = 1; |
| 1121 | if ( ! mdoc_body_alloc(m, line, ppos, tok)) |
| 1122 | return(0); |
| 1123 | } |
| 1124 | |
| 1125 | if ( ! mdoc_word_alloc(m, line, la, p)) |
| 1126 | return(0); |
| 1127 | } |
| 1128 | |
| 1129 | /* Close the head and open the body, if applicable. */ |
| 1130 | |
| 1131 | if ( ! flushed) { |
| 1132 | if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos)) |
| 1133 | return(0); |
| 1134 | if ( ! mdoc_body_alloc(m, line, ppos, tok)) |
| 1135 | return(0); |
| 1136 | } |
| 1137 | |
| 1138 | /* Standard appending of delimiters. */ |
| 1139 | |
| 1140 | if (ppos > 1) |
| 1141 | return(1); |
| 1142 | return(append_delims(m, line, pos, buf)); |
| 1143 | } |
| 1144 | |
| 1145 | |
| 1146 | static int |
| 1147 | in_line_argn(MACRO_PROT_ARGS) |
| 1148 | { |
| 1149 | int la, flushed, j, c, maxargs; |
| 1150 | struct mdoc_arg *arg; |
| 1151 | char *p; |
| 1152 | |
| 1153 | /* Fixed maximum arguments per macro, if applicable. */ |
| 1154 | |
| 1155 | switch (tok) { |
| 1156 | case (MDOC_Ap): |
| 1157 | /* FALLTHROUGH */ |
| 1158 | case (MDOC_No): |
| 1159 | /* FALLTHROUGH */ |
| 1160 | case (MDOC_Ns): |
| 1161 | /* FALLTHROUGH */ |
| 1162 | case (MDOC_Ux): |
| 1163 | maxargs = 0; |
| 1164 | break; |
| 1165 | default: |
| 1166 | maxargs = 1; |
| 1167 | break; |
| 1168 | } |
| 1169 | |
| 1170 | /* Macro argument processing. */ |
| 1171 | |
| 1172 | for (arg = NULL;; ) { |
| 1173 | la = *pos; |
| 1174 | c = mdoc_argv(m, line, tok, &arg, pos, buf); |
| 1175 | |
| 1176 | if (ARGV_WORD == c) { |
| 1177 | *pos = la; |
| 1178 | break; |
| 1179 | } |
| 1180 | |
| 1181 | if (ARGV_EOLN == c) |
| 1182 | break; |
| 1183 | if (ARGV_ARG == c) |
| 1184 | continue; |
| 1185 | |
| 1186 | mdoc_argv_free(arg); |
| 1187 | return(0); |
| 1188 | } |
| 1189 | |
| 1190 | /* Open the element scope. */ |
| 1191 | |
| 1192 | if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg)) |
| 1193 | return(0); |
| 1194 | |
| 1195 | /* Process element arguments. */ |
| 1196 | |
| 1197 | for (flushed = j = 0; ; j++) { |
| 1198 | la = *pos; |
| 1199 | |
| 1200 | if (j == maxargs && ! flushed) { |
| 1201 | if ( ! rew_elem(m, tok)) |
| 1202 | return(0); |
| 1203 | flushed = 1; |
| 1204 | } |
| 1205 | |
| 1206 | c = mdoc_args(m, line, pos, buf, tok, &p); |
| 1207 | |
| 1208 | if (ARGS_ERROR == c) |
| 1209 | return(0); |
| 1210 | if (ARGS_PUNCT == c) |
| 1211 | break; |
| 1212 | if (ARGS_EOLN == c) |
| 1213 | break; |
| 1214 | |
| 1215 | if (MDOC_MAX != (c = lookup(tok, p))) { |
| 1216 | if ( ! flushed && ! rew_elem(m, tok)) |
| 1217 | return(0); |
| 1218 | flushed = 1; |
| 1219 | if ( ! mdoc_macro(m, c, line, la, pos, buf)) |
| 1220 | return(0); |
| 1221 | break; |
| 1222 | } |
| 1223 | |
| 1224 | if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) && |
| 1225 | ! flushed && mdoc_isdelim(p)) { |
| 1226 | if ( ! rew_elem(m, tok)) |
| 1227 | return(0); |
| 1228 | flushed = 1; |
| 1229 | } |
| 1230 | |
| 1231 | if ( ! mdoc_word_alloc(m, line, la, p)) |
| 1232 | return(0); |
| 1233 | } |
| 1234 | |
| 1235 | /* Close out and append delimiters. */ |
| 1236 | |
| 1237 | if ( ! flushed && ! rew_elem(m, tok)) |
| 1238 | return(0); |
| 1239 | |
| 1240 | if (ppos > 1) |
| 1241 | return(1); |
| 1242 | return(append_delims(m, line, pos, buf)); |
| 1243 | } |
| 1244 | |
| 1245 | |
| 1246 | static int |
| 1247 | in_line_eoln(MACRO_PROT_ARGS) |
| 1248 | { |
| 1249 | int c, w, la; |
| 1250 | struct mdoc_arg *arg; |
| 1251 | char *p; |
| 1252 | |
| 1253 | assert( ! (MDOC_PARSED & mdoc_macros[tok].flags)); |
| 1254 | |
| 1255 | /* Parse macro arguments. */ |
| 1256 | |
| 1257 | for (arg = NULL; ; ) { |
| 1258 | la = *pos; |
| 1259 | c = mdoc_argv(m, line, tok, &arg, pos, buf); |
| 1260 | |
| 1261 | if (ARGV_WORD == c) { |
| 1262 | *pos = la; |
| 1263 | break; |
| 1264 | } |
| 1265 | if (ARGV_EOLN == c) |
| 1266 | break; |
| 1267 | if (ARGV_ARG == c) |
| 1268 | continue; |
| 1269 | |
| 1270 | mdoc_argv_free(arg); |
| 1271 | return(0); |
| 1272 | } |
| 1273 | |
| 1274 | /* Open element scope. */ |
| 1275 | |
| 1276 | if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg)) |
| 1277 | return(0); |
| 1278 | |
| 1279 | /* Parse argument terms. */ |
| 1280 | |
| 1281 | for (;;) { |
| 1282 | la = *pos; |
| 1283 | w = mdoc_args(m, line, pos, buf, tok, &p); |
| 1284 | |
| 1285 | if (ARGS_ERROR == w) |
| 1286 | return(0); |
| 1287 | if (ARGS_EOLN == w) |
| 1288 | break; |
| 1289 | |
| 1290 | c = ARGS_QWORD == w ? MDOC_MAX : lookup(tok, p); |
| 1291 | |
| 1292 | if (MDOC_MAX != c) { |
| 1293 | if ( ! rew_elem(m, tok)) |
| 1294 | return(0); |
| 1295 | return(mdoc_macro(m, c, line, la, pos, buf)); |
| 1296 | } |
| 1297 | |
| 1298 | if ( ! mdoc_word_alloc(m, line, la, p)) |
| 1299 | return(0); |
| 1300 | } |
| 1301 | |
| 1302 | /* Close out (no delimiters). */ |
| 1303 | |
| 1304 | return(rew_elem(m, tok)); |
| 1305 | } |
| 1306 | |
| 1307 | |
| 1308 | /* ARGSUSED */ |
| 1309 | static int |
| 1310 | obsolete(MACRO_PROT_ARGS) |
| 1311 | { |
| 1312 | |
| 1313 | return(mdoc_pwarn(m, line, ppos, EOBS)); |
| 1314 | } |
| 1315 | |
| 1316 | |
| 1317 | /* |
| 1318 | * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs. |
| 1319 | * They're unusual because they're basically free-form text until a |
| 1320 | * macro is encountered. |
| 1321 | */ |
| 1322 | static int |
| 1323 | phrase(struct mdoc *m, int line, int ppos, char *buf) |
| 1324 | { |
| 1325 | int c, w, la, pos; |
| 1326 | char *p; |
| 1327 | |
| 1328 | for (pos = ppos; ; ) { |
| 1329 | la = pos; |
| 1330 | |
| 1331 | /* Note: no calling context! */ |
| 1332 | w = mdoc_zargs(m, line, &pos, buf, 0, &p); |
| 1333 | |
| 1334 | if (ARGS_ERROR == w) |
| 1335 | return(0); |
| 1336 | if (ARGS_EOLN == w) |
| 1337 | break; |
| 1338 | |
| 1339 | c = ARGS_QWORD == w ? MDOC_MAX : lookup_raw(p); |
| 1340 | |
| 1341 | if (MDOC_MAX != c) { |
| 1342 | if ( ! mdoc_macro(m, c, line, la, &pos, buf)) |
| 1343 | return(0); |
| 1344 | return(append_delims(m, line, &pos, buf)); |
| 1345 | } |
| 1346 | |
| 1347 | if ( ! mdoc_word_alloc(m, line, la, p)) |
| 1348 | return(0); |
| 1349 | } |
| 1350 | |
| 1351 | return(1); |
| 1352 | } |