| 1 | /* |
| 2 | * Copyright (C) 1989-95 GROUPE BULL |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 5 | * of this software and associated documentation files (the "Software"), to |
| 6 | * deal in the Software without restriction, including without limitation the |
| 7 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| 8 | * sell copies of the Software, and to permit persons to whom the Software is |
| 9 | * furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice shall be included in |
| 12 | * all copies or substantial portions of the Software. |
| 13 | * |
| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 17 | * GROUPE BULL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
| 18 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 19 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 20 | * |
| 21 | * Except as contained in this notice, the name of GROUPE BULL shall not be |
| 22 | * used in advertising or otherwise to promote the sale, use or other dealings |
| 23 | * in this Software without prior written authorization from GROUPE BULL. |
| 24 | */ |
| 25 | |
| 26 | /*****************************************************************************\ |
| 27 | * data.c: * |
| 28 | * * |
| 29 | * XPM library * |
| 30 | * IO utilities * |
| 31 | * * |
| 32 | * Developed by Arnaud Le Hors * |
| 33 | \*****************************************************************************/ |
| 34 | |
| 35 | #ifndef CXPMPROG |
| 36 | /* Official version number */ |
| 37 | static char *RCS_Version = "$XpmVersion: 3.4k $"; |
| 38 | |
| 39 | /* Internal version number */ |
| 40 | static char *RCS_Id = "$Id$"; |
| 41 | |
| 42 | #include "XpmI.h" |
| 43 | #endif |
| 44 | #include <ctype.h> |
| 45 | |
| 46 | #ifndef CXPMPROG |
| 47 | #define Getc(data, file) getc(file) |
| 48 | #define Ungetc(data, c, file) ungetc(c, file) |
| 49 | #endif |
| 50 | |
| 51 | #ifdef __OS2__ |
| 52 | /* Visual Age cannot deal with old, non-ansi, code */ |
| 53 | static int |
| 54 | ParseComment(xpmData* data) |
| 55 | #else |
| 56 | static int |
| 57 | ParseComment(data) |
| 58 | xpmData *data; |
| 59 | #endif |
| 60 | { |
| 61 | if (data->type == XPMBUFFER) { |
| 62 | register char c; |
| 63 | register unsigned int n = 0; |
| 64 | unsigned int notend; |
| 65 | char *s, *s2; |
| 66 | |
| 67 | s = data->Comment; |
| 68 | *s = data->Bcmt[0]; |
| 69 | |
| 70 | /* skip the string beginning comment */ |
| 71 | s2 = data->Bcmt; |
| 72 | do { |
| 73 | c = *data->cptr++; |
| 74 | *++s = c; |
| 75 | n++; |
| 76 | s2++; |
| 77 | } while (c == *s2 && *s2 != '\0' && c); |
| 78 | |
| 79 | if (*s2 != '\0') { |
| 80 | /* this wasn't the beginning of a comment */ |
| 81 | data->cptr -= n; |
| 82 | return 0; |
| 83 | } |
| 84 | /* store comment */ |
| 85 | data->Comment[0] = *s; |
| 86 | s = data->Comment; |
| 87 | notend = 1; |
| 88 | n = 0; |
| 89 | while (notend) { |
| 90 | s2 = data->Ecmt; |
| 91 | while (*s != *s2 && c) { |
| 92 | c = *data->cptr++; |
| 93 | if (n == XPMMAXCMTLEN - 1) { /* forget it */ |
| 94 | s = data->Comment; |
| 95 | n = 0; |
| 96 | } |
| 97 | *++s = c; |
| 98 | n++; |
| 99 | } |
| 100 | data->CommentLength = n; |
| 101 | do { |
| 102 | c = *data->cptr++; |
| 103 | if (n == XPMMAXCMTLEN - 1) { /* forget it */ |
| 104 | s = data->Comment; |
| 105 | n = 0; |
| 106 | } |
| 107 | *++s = c; |
| 108 | n++; |
| 109 | s2++; |
| 110 | } while (c == *s2 && *s2 != '\0' && c); |
| 111 | if (*s2 == '\0') { |
| 112 | /* this is the end of the comment */ |
| 113 | notend = 0; |
| 114 | data->cptr--; |
| 115 | } |
| 116 | } |
| 117 | return 0; |
| 118 | } else { |
| 119 | FILE *file = data->stream.file; |
| 120 | register int c; |
| 121 | register unsigned int n = 0, a; |
| 122 | unsigned int notend; |
| 123 | char *s, *s2; |
| 124 | |
| 125 | s = data->Comment; |
| 126 | *s = data->Bcmt[0]; |
| 127 | |
| 128 | /* skip the string beginning comment */ |
| 129 | s2 = data->Bcmt; |
| 130 | do { |
| 131 | c = Getc(data, file); |
| 132 | *++s = c; |
| 133 | n++; |
| 134 | s2++; |
| 135 | } while (c == *s2 && *s2 != '\0' && c != EOF); |
| 136 | |
| 137 | if (*s2 != '\0') { |
| 138 | /* this wasn't the beginning of a comment */ |
| 139 | /* put characters back in the order that we got them */ |
| 140 | for (a = n; a > 0; a--, s--) |
| 141 | Ungetc(data, *s, file); |
| 142 | return 0; |
| 143 | } |
| 144 | /* store comment */ |
| 145 | data->Comment[0] = *s; |
| 146 | s = data->Comment; |
| 147 | notend = 1; |
| 148 | n = 0; |
| 149 | while (notend) { |
| 150 | s2 = data->Ecmt; |
| 151 | while (*s != *s2 && c != EOF) { |
| 152 | c = Getc(data, file); |
| 153 | if (n == XPMMAXCMTLEN - 1) { /* forget it */ |
| 154 | s = data->Comment; |
| 155 | n = 0; |
| 156 | } |
| 157 | *++s = c; |
| 158 | n++; |
| 159 | } |
| 160 | data->CommentLength = n; |
| 161 | do { |
| 162 | c = Getc(data, file); |
| 163 | if (n == XPMMAXCMTLEN - 1) { /* forget it */ |
| 164 | s = data->Comment; |
| 165 | n = 0; |
| 166 | } |
| 167 | *++s = c; |
| 168 | n++; |
| 169 | s2++; |
| 170 | } while (c == *s2 && *s2 != '\0' && c != EOF); |
| 171 | if (*s2 == '\0') { |
| 172 | /* this is the end of the comment */ |
| 173 | notend = 0; |
| 174 | Ungetc(data, *s, file); |
| 175 | } |
| 176 | } |
| 177 | return 0; |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | /* |
| 182 | * skip to the end of the current string and the beginning of the next one |
| 183 | */ |
| 184 | #ifdef __OS2__ |
| 185 | /* Visual Age cannot deal with old, non-ansi, code */ |
| 186 | int xpmNextString(xpmData* data) |
| 187 | #else |
| 188 | int |
| 189 | xpmNextString(data) |
| 190 | xpmData *data; |
| 191 | #endif |
| 192 | { |
| 193 | if (!data->type) |
| 194 | data->cptr = (data->stream.data)[++data->line]; |
| 195 | else if (data->type == XPMBUFFER) { |
| 196 | register char c; |
| 197 | |
| 198 | /* get to the end of the current string */ |
| 199 | if (data->Eos) |
| 200 | while ((c = *data->cptr++) && c != data->Eos); |
| 201 | |
| 202 | /* |
| 203 | * then get to the beginning of the next string looking for possible |
| 204 | * comment |
| 205 | */ |
| 206 | if (data->Bos) { |
| 207 | while ((c = *data->cptr++) && c != data->Bos) |
| 208 | if (data->Bcmt && c == data->Bcmt[0]) |
| 209 | ParseComment(data); |
| 210 | } else if (data->Bcmt) { /* XPM2 natural */ |
| 211 | while ((c = *data->cptr++) == data->Bcmt[0]) |
| 212 | ParseComment(data); |
| 213 | data->cptr--; |
| 214 | } |
| 215 | } else { |
| 216 | register int c; |
| 217 | FILE *file = data->stream.file; |
| 218 | |
| 219 | /* get to the end of the current string */ |
| 220 | if (data->Eos) |
| 221 | while ((c = Getc(data, file)) != data->Eos && c != EOF); |
| 222 | |
| 223 | /* |
| 224 | * then get to the beginning of the next string looking for possible |
| 225 | * comment |
| 226 | */ |
| 227 | if (data->Bos) { |
| 228 | while ((c = Getc(data, file)) != data->Bos && c != EOF) |
| 229 | if (data->Bcmt && c == data->Bcmt[0]) |
| 230 | ParseComment(data); |
| 231 | |
| 232 | } else if (data->Bcmt) { /* XPM2 natural */ |
| 233 | while ((c = Getc(data, file)) == data->Bcmt[0]) |
| 234 | ParseComment(data); |
| 235 | Ungetc(data, c, file); |
| 236 | } |
| 237 | } |
| 238 | return 0; |
| 239 | } |
| 240 | |
| 241 | |
| 242 | /* |
| 243 | * skip whitespace and return the following word |
| 244 | */ |
| 245 | #ifdef __OS2__ |
| 246 | /* Visual Age cannot deal with old, non-ansi, code */ |
| 247 | unsigned int xpmNextWord( |
| 248 | xpmData* data |
| 249 | , char* buf |
| 250 | , unsigned int buflen |
| 251 | ) |
| 252 | #else |
| 253 | unsigned int |
| 254 | xpmNextWord(data, buf, buflen) |
| 255 | xpmData *data; |
| 256 | char *buf; |
| 257 | unsigned int buflen; |
| 258 | #endif |
| 259 | { |
| 260 | register unsigned int n = 0; |
| 261 | int c; |
| 262 | |
| 263 | if (!data->type || data->type == XPMBUFFER) { |
| 264 | while (isspace(c = *data->cptr) && c != data->Eos) |
| 265 | data->cptr++; |
| 266 | do { |
| 267 | c = *data->cptr++; |
| 268 | *buf++ = c; |
| 269 | n++; |
| 270 | } while (!isspace(c) && c != data->Eos && n < buflen); |
| 271 | n--; |
| 272 | data->cptr--; |
| 273 | } else { |
| 274 | FILE *file = data->stream.file; |
| 275 | |
| 276 | while ((c = Getc(data, file)) != EOF && isspace(c) && c != data->Eos); |
| 277 | while (!isspace(c) && c != data->Eos && c != EOF && n < buflen) { |
| 278 | *buf++ = c; |
| 279 | n++; |
| 280 | c = Getc(data, file); |
| 281 | } |
| 282 | Ungetc(data, c, file); |
| 283 | } |
| 284 | return (n); |
| 285 | } |
| 286 | |
| 287 | /* |
| 288 | * skip whitespace and compute the following unsigned int, |
| 289 | * returns 1 if one is found and 0 if not |
| 290 | */ |
| 291 | #ifdef __OS2__ |
| 292 | /* Visual Age cannot deal with old, non-ansi, code */ |
| 293 | int |
| 294 | xpmNextUI(xpmData* data, unsigned int* ui_return) |
| 295 | #else |
| 296 | int |
| 297 | xpmNextUI(data, ui_return) |
| 298 | xpmData *data; |
| 299 | unsigned int *ui_return; |
| 300 | #endif |
| 301 | { |
| 302 | char buf[BUFSIZ]; |
| 303 | int l; |
| 304 | |
| 305 | l = xpmNextWord(data, buf, BUFSIZ); |
| 306 | return xpmatoui(buf, l, ui_return); |
| 307 | } |
| 308 | |
| 309 | /* |
| 310 | * return end of string - WARNING: malloc! |
| 311 | */ |
| 312 | #ifdef __OS2__ |
| 313 | /* Visual Age cannot deal with old, non-ansi, code */ |
| 314 | int xpmGetString(xpmData* data, char** sptr, unsigned int* l) |
| 315 | #else |
| 316 | int |
| 317 | xpmGetString(data, sptr, l) |
| 318 | xpmData *data; |
| 319 | char **sptr; |
| 320 | unsigned int *l; |
| 321 | #endif |
| 322 | { |
| 323 | unsigned int i, n = 0; |
| 324 | int c; |
| 325 | char *p = NULL, *q, buf[BUFSIZ]; |
| 326 | |
| 327 | if (!data->type || data->type == XPMBUFFER) { |
| 328 | if (data->cptr) { |
| 329 | char *start = data->cptr; |
| 330 | while ((c = *data->cptr) && c != data->Eos) |
| 331 | data->cptr++; |
| 332 | n = data->cptr - start + 1; |
| 333 | p = (char *) XpmMalloc(n); |
| 334 | if (!p) |
| 335 | return (XpmNoMemory); |
| 336 | strncpy(p, start, n); |
| 337 | if (data->type) /* XPMBUFFER */ |
| 338 | p[n - 1] = '\0'; |
| 339 | } |
| 340 | } else { |
| 341 | FILE *file = data->stream.file; |
| 342 | |
| 343 | if ((c = Getc(data, file)) == EOF) |
| 344 | return (XpmFileInvalid); |
| 345 | |
| 346 | i = 0; |
| 347 | q = buf; |
| 348 | p = (char *) XpmMalloc(1); |
| 349 | while (c != data->Eos && c != EOF) { |
| 350 | if (i == BUFSIZ) { |
| 351 | /* get to the end of the buffer */ |
| 352 | /* malloc needed memory */ |
| 353 | q = (char *) XpmRealloc(p, n + i); |
| 354 | if (!q) { |
| 355 | XpmFree(p); |
| 356 | return (XpmNoMemory); |
| 357 | } |
| 358 | p = q; |
| 359 | q += n; |
| 360 | /* and copy what we already have */ |
| 361 | strncpy(q, buf, i); |
| 362 | n += i; |
| 363 | i = 0; |
| 364 | q = buf; |
| 365 | } |
| 366 | *q++ = c; |
| 367 | i++; |
| 368 | c = Getc(data, file); |
| 369 | } |
| 370 | if (c == EOF) { |
| 371 | XpmFree(p); |
| 372 | return (XpmFileInvalid); |
| 373 | } |
| 374 | if (n + i != 0) { |
| 375 | /* malloc needed memory */ |
| 376 | q = (char *) XpmRealloc(p, n + i + 1); |
| 377 | if (!q) { |
| 378 | XpmFree(p); |
| 379 | return (XpmNoMemory); |
| 380 | } |
| 381 | p = q; |
| 382 | q += n; |
| 383 | /* and copy the buffer */ |
| 384 | strncpy(q, buf, i); |
| 385 | n += i; |
| 386 | p[n++] = '\0'; |
| 387 | } else { |
| 388 | *p = '\0'; |
| 389 | n = 1; |
| 390 | } |
| 391 | Ungetc(data, c, file); |
| 392 | } |
| 393 | *sptr = p; |
| 394 | *l = n; |
| 395 | return (XpmSuccess); |
| 396 | } |
| 397 | |
| 398 | /* |
| 399 | * get the current comment line |
| 400 | */ |
| 401 | #ifdef __OS2__ |
| 402 | /* Visual Age cannot deal with old, non-ansi, code */ |
| 403 | int xpmGetCmt(xpmData* data, char** cmt) |
| 404 | #else |
| 405 | int |
| 406 | xpmGetCmt(data, cmt) |
| 407 | xpmData *data; |
| 408 | char **cmt; |
| 409 | #endif |
| 410 | { |
| 411 | if (!data->type) |
| 412 | *cmt = NULL; |
| 413 | else if (data->CommentLength) { |
| 414 | *cmt = (char *) XpmMalloc(data->CommentLength + 1); |
| 415 | strncpy(*cmt, data->Comment, data->CommentLength); |
| 416 | (*cmt)[data->CommentLength] = '\0'; |
| 417 | data->CommentLength = 0; |
| 418 | } else |
| 419 | *cmt = NULL; |
| 420 | return 0; |
| 421 | } |
| 422 | |
| 423 | xpmDataType xpmDataTypes[] = |
| 424 | { |
| 425 | "", "!", "\n", '\0', '\n', "", "", "", "", /* Natural type */ |
| 426 | "C", "/*", "*/", '"', '"', ",\n", "static char *", "[] = {\n", "};\n", |
| 427 | "Lisp", ";", "\n", '"', '"', "\n", "(setq ", " '(\n", "))\n", |
| 428 | #ifdef VMS |
| 429 | NULL |
| 430 | #else |
| 431 | NULL, NULL, NULL, 0, 0, NULL, NULL, NULL, NULL |
| 432 | #endif |
| 433 | }; |
| 434 | |
| 435 | /* |
| 436 | * parse xpm header |
| 437 | */ |
| 438 | #ifdef __OS2__ |
| 439 | /* Visual Age cannot deal with old, non-ansi, code */ |
| 440 | int xpmParseHeader(xpmData* data) |
| 441 | #else |
| 442 | int |
| 443 | xpmParseHeader(data) |
| 444 | xpmData *data; |
| 445 | #endif |
| 446 | { |
| 447 | char buf[BUFSIZ]; |
| 448 | int l, n = 0; |
| 449 | |
| 450 | if (data->type) { |
| 451 | data->Bos = '\0'; |
| 452 | data->Eos = '\n'; |
| 453 | data->Bcmt = data->Ecmt = NULL; |
| 454 | l = xpmNextWord(data, buf, BUFSIZ); |
| 455 | if (l == 7 && !strncmp("#define", buf, 7)) { |
| 456 | /* this maybe an XPM 1 file */ |
| 457 | char *ptr; |
| 458 | |
| 459 | l = xpmNextWord(data, buf, BUFSIZ); |
| 460 | if (!l) |
| 461 | return (XpmFileInvalid); |
| 462 | buf[l] = '\0'; |
| 463 | ptr = rindex(buf, '_'); |
| 464 | if (!ptr || strncmp("_format", ptr, l - (ptr - buf))) |
| 465 | return XpmFileInvalid; |
| 466 | /* this is definitely an XPM 1 file */ |
| 467 | data->format = 1; |
| 468 | n = 1; /* handle XPM1 as mainly XPM2 C */ |
| 469 | } else { |
| 470 | |
| 471 | /* |
| 472 | * skip the first word, get the second one, and see if this is |
| 473 | * XPM 2 or 3 |
| 474 | */ |
| 475 | l = xpmNextWord(data, buf, BUFSIZ); |
| 476 | if ((l == 3 && !strncmp("XPM", buf, 3)) || |
| 477 | (l == 4 && !strncmp("XPM2", buf, 4))) { |
| 478 | if (l == 3) |
| 479 | n = 1; /* handle XPM as XPM2 C */ |
| 480 | else { |
| 481 | /* get the type key word */ |
| 482 | l = xpmNextWord(data, buf, BUFSIZ); |
| 483 | |
| 484 | /* |
| 485 | * get infos about this type |
| 486 | */ |
| 487 | while (xpmDataTypes[n].type |
| 488 | && strncmp(xpmDataTypes[n].type, buf, l)) |
| 489 | n++; |
| 490 | } |
| 491 | data->format = 0; |
| 492 | } else |
| 493 | /* nope this is not an XPM file */ |
| 494 | return XpmFileInvalid; |
| 495 | } |
| 496 | if (xpmDataTypes[n].type) { |
| 497 | if (n == 0) { /* natural type */ |
| 498 | data->Bcmt = xpmDataTypes[n].Bcmt; |
| 499 | data->Ecmt = xpmDataTypes[n].Ecmt; |
| 500 | xpmNextString(data); /* skip the end of the headerline */ |
| 501 | data->Bos = xpmDataTypes[n].Bos; |
| 502 | data->Eos = xpmDataTypes[n].Eos; |
| 503 | } else { |
| 504 | data->Bcmt = xpmDataTypes[n].Bcmt; |
| 505 | data->Ecmt = xpmDataTypes[n].Ecmt; |
| 506 | if (!data->format) { /* XPM 2 or 3 */ |
| 507 | data->Bos = xpmDataTypes[n].Bos; |
| 508 | data->Eos = '\0'; |
| 509 | /* get to the beginning of the first string */ |
| 510 | xpmNextString(data); |
| 511 | data->Eos = xpmDataTypes[n].Eos; |
| 512 | } else /* XPM 1 skip end of line */ |
| 513 | xpmNextString(data); |
| 514 | } |
| 515 | } else |
| 516 | /* we don't know about that type of XPM file... */ |
| 517 | return XpmFileInvalid; |
| 518 | } |
| 519 | return XpmSuccess; |
| 520 | } |