| 1 | /* $Id: html.c,v 1.91 2009/11/16 08:46:58 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 <sys/types.h> |
| 18 | |
| 19 | #include <assert.h> |
| 20 | #include <ctype.h> |
| 21 | #include <stdarg.h> |
| 22 | #include <stdio.h> |
| 23 | #include <stdint.h> |
| 24 | #include <stdlib.h> |
| 25 | #include <string.h> |
| 26 | #include <unistd.h> |
| 27 | |
| 28 | #include "out.h" |
| 29 | #include "chars.h" |
| 30 | #include "html.h" |
| 31 | #include "main.h" |
| 32 | |
| 33 | #define UNCONST(a) ((void *)(uintptr_t)(const void *)(a)) |
| 34 | |
| 35 | #define DOCTYPE "-//W3C//DTD HTML 4.01//EN" |
| 36 | #define DTD "http://www.w3.org/TR/html4/strict.dtd" |
| 37 | |
| 38 | struct htmldata { |
| 39 | const char *name; |
| 40 | int flags; |
| 41 | #define HTML_CLRLINE (1 << 0) |
| 42 | #define HTML_NOSTACK (1 << 1) |
| 43 | }; |
| 44 | |
| 45 | static const struct htmldata htmltags[TAG_MAX] = { |
| 46 | {"html", HTML_CLRLINE}, /* TAG_HTML */ |
| 47 | {"head", HTML_CLRLINE}, /* TAG_HEAD */ |
| 48 | {"body", HTML_CLRLINE}, /* TAG_BODY */ |
| 49 | {"meta", HTML_CLRLINE | HTML_NOSTACK}, /* TAG_META */ |
| 50 | {"title", HTML_CLRLINE}, /* TAG_TITLE */ |
| 51 | {"div", HTML_CLRLINE}, /* TAG_DIV */ |
| 52 | {"h1", 0}, /* TAG_H1 */ |
| 53 | {"h2", 0}, /* TAG_H2 */ |
| 54 | {"p", HTML_CLRLINE}, /* TAG_P */ |
| 55 | {"span", 0}, /* TAG_SPAN */ |
| 56 | {"link", HTML_CLRLINE | HTML_NOSTACK}, /* TAG_LINK */ |
| 57 | {"br", HTML_CLRLINE | HTML_NOSTACK}, /* TAG_LINK */ |
| 58 | {"a", 0}, /* TAG_A */ |
| 59 | {"table", HTML_CLRLINE}, /* TAG_TABLE */ |
| 60 | {"col", HTML_CLRLINE | HTML_NOSTACK}, /* TAG_COL */ |
| 61 | {"tr", HTML_CLRLINE}, /* TAG_TR */ |
| 62 | {"td", HTML_CLRLINE}, /* TAG_TD */ |
| 63 | {"li", HTML_CLRLINE}, /* TAG_LI */ |
| 64 | {"ul", HTML_CLRLINE}, /* TAG_UL */ |
| 65 | {"ol", HTML_CLRLINE}, /* TAG_OL */ |
| 66 | {"base", HTML_CLRLINE | HTML_NOSTACK}, /* TAG_BASE */ |
| 67 | }; |
| 68 | |
| 69 | static const char *const htmlfonts[HTMLFONT_MAX] = { |
| 70 | "roman", |
| 71 | "bold", |
| 72 | "italic" |
| 73 | }; |
| 74 | |
| 75 | static const char *const htmlattrs[ATTR_MAX] = { |
| 76 | "http-equiv", |
| 77 | "content", |
| 78 | "name", |
| 79 | "rel", |
| 80 | "href", |
| 81 | "type", |
| 82 | "media", |
| 83 | "class", |
| 84 | "style", |
| 85 | "width", |
| 86 | "valign", |
| 87 | "target", |
| 88 | "id", |
| 89 | "summary", |
| 90 | }; |
| 91 | |
| 92 | #ifdef __linux__ |
| 93 | extern int getsubopt(char **, char * const *, char **); |
| 94 | #endif |
| 95 | |
| 96 | |
| 97 | static void print_spec(struct html *, const char *, size_t); |
| 98 | static void print_res(struct html *, const char *, size_t); |
| 99 | static void print_ctag(struct html *, enum htmltag); |
| 100 | static int print_encode(struct html *, const char *, int); |
| 101 | static void print_metaf(struct html *, enum roffdeco); |
| 102 | |
| 103 | |
| 104 | void * |
| 105 | html_alloc(char *outopts) |
| 106 | { |
| 107 | struct html *h; |
| 108 | const char *toks[4]; |
| 109 | char *v; |
| 110 | |
| 111 | toks[0] = "style"; |
| 112 | toks[1] = "man"; |
| 113 | toks[2] = "includes"; |
| 114 | toks[3] = NULL; |
| 115 | |
| 116 | h = calloc(1, sizeof(struct html)); |
| 117 | if (NULL == h) { |
| 118 | perror(NULL); |
| 119 | exit(EXIT_FAILURE); |
| 120 | } |
| 121 | |
| 122 | h->tags.head = NULL; |
| 123 | h->ords.head = NULL; |
| 124 | h->symtab = chars_init(CHARS_HTML); |
| 125 | |
| 126 | while (outopts && *outopts) |
| 127 | switch (getsubopt(&outopts, UNCONST(toks), &v)) { |
| 128 | case (0): |
| 129 | h->style = v; |
| 130 | break; |
| 131 | case (1): |
| 132 | h->base_man = v; |
| 133 | break; |
| 134 | case (2): |
| 135 | h->base_includes = v; |
| 136 | break; |
| 137 | default: |
| 138 | break; |
| 139 | } |
| 140 | |
| 141 | return(h); |
| 142 | } |
| 143 | |
| 144 | |
| 145 | void |
| 146 | html_free(void *p) |
| 147 | { |
| 148 | struct tag *tag; |
| 149 | struct ord *ord; |
| 150 | struct html *h; |
| 151 | |
| 152 | h = (struct html *)p; |
| 153 | |
| 154 | while ((ord = h->ords.head) != NULL) { |
| 155 | h->ords.head = ord->next; |
| 156 | free(ord); |
| 157 | } |
| 158 | |
| 159 | while ((tag = h->tags.head) != NULL) { |
| 160 | h->tags.head = tag->next; |
| 161 | free(tag); |
| 162 | } |
| 163 | |
| 164 | if (h->symtab) |
| 165 | chars_free(h->symtab); |
| 166 | |
| 167 | free(h); |
| 168 | } |
| 169 | |
| 170 | |
| 171 | void |
| 172 | print_gen_head(struct html *h) |
| 173 | { |
| 174 | struct htmlpair tag[4]; |
| 175 | |
| 176 | tag[0].key = ATTR_HTTPEQUIV; |
| 177 | tag[0].val = "Content-Type"; |
| 178 | tag[1].key = ATTR_CONTENT; |
| 179 | tag[1].val = "text/html; charset=utf-8"; |
| 180 | print_otag(h, TAG_META, 2, tag); |
| 181 | |
| 182 | tag[0].key = ATTR_NAME; |
| 183 | tag[0].val = "resource-type"; |
| 184 | tag[1].key = ATTR_CONTENT; |
| 185 | tag[1].val = "document"; |
| 186 | print_otag(h, TAG_META, 2, tag); |
| 187 | |
| 188 | if (h->style) { |
| 189 | tag[0].key = ATTR_REL; |
| 190 | tag[0].val = "stylesheet"; |
| 191 | tag[1].key = ATTR_HREF; |
| 192 | tag[1].val = h->style; |
| 193 | tag[2].key = ATTR_TYPE; |
| 194 | tag[2].val = "text/css"; |
| 195 | tag[3].key = ATTR_MEDIA; |
| 196 | tag[3].val = "all"; |
| 197 | print_otag(h, TAG_LINK, 4, tag); |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | |
| 202 | static void |
| 203 | print_spec(struct html *h, const char *p, size_t len) |
| 204 | { |
| 205 | const char *rhs; |
| 206 | size_t sz; |
| 207 | |
| 208 | rhs = chars_a2ascii(h->symtab, p, len, &sz); |
| 209 | |
| 210 | if (NULL == rhs) |
| 211 | return; |
| 212 | fwrite(rhs, 1, sz, stdout); |
| 213 | } |
| 214 | |
| 215 | |
| 216 | static void |
| 217 | print_res(struct html *h, const char *p, size_t len) |
| 218 | { |
| 219 | const char *rhs; |
| 220 | size_t sz; |
| 221 | |
| 222 | rhs = chars_a2res(h->symtab, p, len, &sz); |
| 223 | |
| 224 | if (NULL == rhs) |
| 225 | return; |
| 226 | fwrite(rhs, 1, sz, stdout); |
| 227 | } |
| 228 | |
| 229 | |
| 230 | struct tag * |
| 231 | print_ofont(struct html *h, enum htmlfont font) |
| 232 | { |
| 233 | struct htmlpair tag; |
| 234 | |
| 235 | h->metal = h->metac; |
| 236 | h->metac = font; |
| 237 | |
| 238 | /* FIXME: DECO_ROMAN should just close out preexisting. */ |
| 239 | |
| 240 | if (h->metaf && h->tags.head == h->metaf) |
| 241 | print_tagq(h, h->metaf); |
| 242 | |
| 243 | PAIR_CLASS_INIT(&tag, htmlfonts[font]); |
| 244 | h->metaf = print_otag(h, TAG_SPAN, 1, &tag); |
| 245 | return(h->metaf); |
| 246 | } |
| 247 | |
| 248 | |
| 249 | static void |
| 250 | print_metaf(struct html *h, enum roffdeco deco) |
| 251 | { |
| 252 | enum htmlfont font; |
| 253 | |
| 254 | switch (deco) { |
| 255 | case (DECO_PREVIOUS): |
| 256 | font = h->metal; |
| 257 | break; |
| 258 | case (DECO_ITALIC): |
| 259 | font = HTMLFONT_ITALIC; |
| 260 | break; |
| 261 | case (DECO_BOLD): |
| 262 | font = HTMLFONT_BOLD; |
| 263 | break; |
| 264 | case (DECO_ROMAN): |
| 265 | font = HTMLFONT_NONE; |
| 266 | break; |
| 267 | default: |
| 268 | abort(); |
| 269 | /* NOTREACHED */ |
| 270 | } |
| 271 | |
| 272 | (void)print_ofont(h, font); |
| 273 | } |
| 274 | |
| 275 | |
| 276 | static int |
| 277 | print_encode(struct html *h, const char *p, int norecurse) |
| 278 | { |
| 279 | size_t sz; |
| 280 | int len, nospace; |
| 281 | const char *seq; |
| 282 | enum roffdeco deco; |
| 283 | |
| 284 | nospace = 0; |
| 285 | |
| 286 | for (; *p; p++) { |
| 287 | sz = strcspn(p, "\\<>&"); |
| 288 | |
| 289 | fwrite(p, 1, sz, stdout); |
| 290 | p += /* LINTED */ |
| 291 | sz; |
| 292 | |
| 293 | if ('<' == *p) { |
| 294 | printf("<"); |
| 295 | continue; |
| 296 | } else if ('>' == *p) { |
| 297 | printf(">"); |
| 298 | continue; |
| 299 | } else if ('&' == *p) { |
| 300 | printf("&"); |
| 301 | continue; |
| 302 | } else if ('\0' == *p) |
| 303 | break; |
| 304 | |
| 305 | seq = ++p; |
| 306 | len = a2roffdeco(&deco, &seq, &sz); |
| 307 | |
| 308 | switch (deco) { |
| 309 | case (DECO_RESERVED): |
| 310 | print_res(h, seq, sz); |
| 311 | break; |
| 312 | case (DECO_SPECIAL): |
| 313 | print_spec(h, seq, sz); |
| 314 | break; |
| 315 | case (DECO_PREVIOUS): |
| 316 | /* FALLTHROUGH */ |
| 317 | case (DECO_BOLD): |
| 318 | /* FALLTHROUGH */ |
| 319 | case (DECO_ITALIC): |
| 320 | /* FALLTHROUGH */ |
| 321 | case (DECO_ROMAN): |
| 322 | if (norecurse) |
| 323 | break; |
| 324 | print_metaf(h, deco); |
| 325 | break; |
| 326 | default: |
| 327 | break; |
| 328 | } |
| 329 | |
| 330 | p += len - 1; |
| 331 | |
| 332 | if (DECO_NOSPACE == deco && '\0' == *(p + 1)) |
| 333 | nospace = 1; |
| 334 | } |
| 335 | |
| 336 | return(nospace); |
| 337 | } |
| 338 | |
| 339 | |
| 340 | struct tag * |
| 341 | print_otag(struct html *h, enum htmltag tag, |
| 342 | int sz, const struct htmlpair *p) |
| 343 | { |
| 344 | int i; |
| 345 | struct tag *t; |
| 346 | |
| 347 | if ( ! (HTML_NOSTACK & htmltags[tag].flags)) { |
| 348 | t = malloc(sizeof(struct tag)); |
| 349 | if (NULL == t) { |
| 350 | perror(NULL); |
| 351 | exit(EXIT_FAILURE); |
| 352 | } |
| 353 | t->tag = tag; |
| 354 | t->next = h->tags.head; |
| 355 | h->tags.head = t; |
| 356 | } else |
| 357 | t = NULL; |
| 358 | |
| 359 | if ( ! (HTML_NOSPACE & h->flags)) |
| 360 | if ( ! (HTML_CLRLINE & htmltags[tag].flags)) |
| 361 | putchar(' '); |
| 362 | |
| 363 | printf("<%s", htmltags[tag].name); |
| 364 | for (i = 0; i < sz; i++) { |
| 365 | printf(" %s=\"", htmlattrs[p[i].key]); |
| 366 | assert(p->val); |
| 367 | (void)print_encode(h, p[i].val, 1); |
| 368 | putchar('\"'); |
| 369 | } |
| 370 | putchar('>'); |
| 371 | |
| 372 | h->flags |= HTML_NOSPACE; |
| 373 | return(t); |
| 374 | } |
| 375 | |
| 376 | |
| 377 | static void |
| 378 | print_ctag(struct html *h, enum htmltag tag) |
| 379 | { |
| 380 | |
| 381 | printf("</%s>", htmltags[tag].name); |
| 382 | if (HTML_CLRLINE & htmltags[tag].flags) { |
| 383 | h->flags |= HTML_NOSPACE; |
| 384 | putchar('\n'); |
| 385 | } |
| 386 | } |
| 387 | |
| 388 | |
| 389 | /* ARGSUSED */ |
| 390 | void |
| 391 | print_gen_doctype(struct html *h) |
| 392 | { |
| 393 | |
| 394 | printf("<!DOCTYPE HTML PUBLIC \"%s\" \"%s\">", DOCTYPE, DTD); |
| 395 | } |
| 396 | |
| 397 | |
| 398 | void |
| 399 | print_text(struct html *h, const char *p) |
| 400 | { |
| 401 | |
| 402 | if (*p && 0 == *(p + 1)) |
| 403 | switch (*p) { |
| 404 | case('.'): |
| 405 | /* FALLTHROUGH */ |
| 406 | case(','): |
| 407 | /* FALLTHROUGH */ |
| 408 | case(';'): |
| 409 | /* FALLTHROUGH */ |
| 410 | case(':'): |
| 411 | /* FALLTHROUGH */ |
| 412 | case('?'): |
| 413 | /* FALLTHROUGH */ |
| 414 | case('!'): |
| 415 | /* FALLTHROUGH */ |
| 416 | case(')'): |
| 417 | /* FALLTHROUGH */ |
| 418 | case(']'): |
| 419 | /* FALLTHROUGH */ |
| 420 | case('}'): |
| 421 | if ( ! (HTML_IGNDELIM & h->flags)) |
| 422 | h->flags |= HTML_NOSPACE; |
| 423 | break; |
| 424 | default: |
| 425 | break; |
| 426 | } |
| 427 | |
| 428 | if ( ! (h->flags & HTML_NOSPACE)) |
| 429 | putchar(' '); |
| 430 | |
| 431 | assert(p); |
| 432 | if ( ! print_encode(h, p, 0)) |
| 433 | h->flags &= ~HTML_NOSPACE; |
| 434 | |
| 435 | if (*p && 0 == *(p + 1)) |
| 436 | switch (*p) { |
| 437 | case('('): |
| 438 | /* FALLTHROUGH */ |
| 439 | case('['): |
| 440 | /* FALLTHROUGH */ |
| 441 | case('{'): |
| 442 | h->flags |= HTML_NOSPACE; |
| 443 | break; |
| 444 | default: |
| 445 | break; |
| 446 | } |
| 447 | } |
| 448 | |
| 449 | |
| 450 | void |
| 451 | print_tagq(struct html *h, const struct tag *until) |
| 452 | { |
| 453 | struct tag *tag; |
| 454 | |
| 455 | while ((tag = h->tags.head) != NULL) { |
| 456 | if (tag == h->metaf) |
| 457 | h->metaf = NULL; |
| 458 | print_ctag(h, tag->tag); |
| 459 | h->tags.head = tag->next; |
| 460 | free(tag); |
| 461 | if (until && tag == until) |
| 462 | return; |
| 463 | } |
| 464 | } |
| 465 | |
| 466 | |
| 467 | void |
| 468 | print_stagq(struct html *h, const struct tag *suntil) |
| 469 | { |
| 470 | struct tag *tag; |
| 471 | |
| 472 | while ((tag = h->tags.head) != NULL) { |
| 473 | if (suntil && tag == suntil) |
| 474 | return; |
| 475 | if (tag == h->metaf) |
| 476 | h->metaf = NULL; |
| 477 | print_ctag(h, tag->tag); |
| 478 | h->tags.head = tag->next; |
| 479 | free(tag); |
| 480 | } |
| 481 | } |
| 482 | |
| 483 | |
| 484 | void |
| 485 | bufinit(struct html *h) |
| 486 | { |
| 487 | |
| 488 | h->buf[0] = '\0'; |
| 489 | h->buflen = 0; |
| 490 | } |
| 491 | |
| 492 | |
| 493 | void |
| 494 | bufcat_style(struct html *h, const char *key, const char *val) |
| 495 | { |
| 496 | |
| 497 | bufcat(h, key); |
| 498 | bufncat(h, ":", 1); |
| 499 | bufcat(h, val); |
| 500 | bufncat(h, ";", 1); |
| 501 | } |
| 502 | |
| 503 | |
| 504 | void |
| 505 | bufcat(struct html *h, const char *p) |
| 506 | { |
| 507 | |
| 508 | bufncat(h, p, strlen(p)); |
| 509 | } |
| 510 | |
| 511 | |
| 512 | void |
| 513 | buffmt(struct html *h, const char *fmt, ...) |
| 514 | { |
| 515 | va_list ap; |
| 516 | |
| 517 | va_start(ap, fmt); |
| 518 | (void)vsnprintf(h->buf + (int)h->buflen, |
| 519 | BUFSIZ - h->buflen - 1, fmt, ap); |
| 520 | va_end(ap); |
| 521 | h->buflen = strlen(h->buf); |
| 522 | } |
| 523 | |
| 524 | |
| 525 | void |
| 526 | bufncat(struct html *h, const char *p, size_t sz) |
| 527 | { |
| 528 | |
| 529 | if (h->buflen + sz > BUFSIZ - 1) |
| 530 | sz = BUFSIZ - 1 - h->buflen; |
| 531 | |
| 532 | (void)strncat(h->buf, p, sz); |
| 533 | h->buflen += sz; |
| 534 | } |
| 535 | |
| 536 | |
| 537 | void |
| 538 | buffmt_includes(struct html *h, const char *name) |
| 539 | { |
| 540 | const char *p, *pp; |
| 541 | |
| 542 | pp = h->base_includes; |
| 543 | |
| 544 | while (NULL != (p = strchr(pp, '%'))) { |
| 545 | bufncat(h, pp, (size_t)(p - pp)); |
| 546 | switch (*(p + 1)) { |
| 547 | case('I'): |
| 548 | bufcat(h, name); |
| 549 | break; |
| 550 | default: |
| 551 | bufncat(h, p, 2); |
| 552 | break; |
| 553 | } |
| 554 | pp = p + 2; |
| 555 | } |
| 556 | if (pp) |
| 557 | bufcat(h, pp); |
| 558 | } |
| 559 | |
| 560 | |
| 561 | void |
| 562 | buffmt_man(struct html *h, |
| 563 | const char *name, const char *sec) |
| 564 | { |
| 565 | const char *p, *pp; |
| 566 | |
| 567 | pp = h->base_man; |
| 568 | |
| 569 | /* LINTED */ |
| 570 | while (NULL != (p = strchr(pp, '%'))) { |
| 571 | bufncat(h, pp, (size_t)(p - pp)); |
| 572 | switch (*(p + 1)) { |
| 573 | case('S'): |
| 574 | bufcat(h, sec ? sec : "1"); |
| 575 | break; |
| 576 | case('N'): |
| 577 | buffmt(h, name); |
| 578 | break; |
| 579 | default: |
| 580 | bufncat(h, p, 2); |
| 581 | break; |
| 582 | } |
| 583 | pp = p + 2; |
| 584 | } |
| 585 | if (pp) |
| 586 | bufcat(h, pp); |
| 587 | } |
| 588 | |
| 589 | |
| 590 | void |
| 591 | bufcat_su(struct html *h, const char *p, const struct roffsu *su) |
| 592 | { |
| 593 | double v; |
| 594 | const char *u; |
| 595 | |
| 596 | v = su->scale; |
| 597 | |
| 598 | switch (su->unit) { |
| 599 | case (SCALE_CM): |
| 600 | u = "cm"; |
| 601 | break; |
| 602 | case (SCALE_IN): |
| 603 | u = "in"; |
| 604 | break; |
| 605 | case (SCALE_PC): |
| 606 | u = "pc"; |
| 607 | break; |
| 608 | case (SCALE_PT): |
| 609 | u = "pt"; |
| 610 | break; |
| 611 | case (SCALE_EM): |
| 612 | u = "em"; |
| 613 | break; |
| 614 | case (SCALE_MM): |
| 615 | if (0 == (v /= 100)) |
| 616 | v = 1; |
| 617 | u = "em"; |
| 618 | break; |
| 619 | case (SCALE_EN): |
| 620 | u = "ex"; |
| 621 | break; |
| 622 | case (SCALE_BU): |
| 623 | u = "ex"; |
| 624 | break; |
| 625 | case (SCALE_VS): |
| 626 | u = "em"; |
| 627 | break; |
| 628 | default: |
| 629 | u = "ex"; |
| 630 | break; |
| 631 | } |
| 632 | |
| 633 | if (su->pt) |
| 634 | buffmt(h, "%s: %f%s;", p, v, u); |
| 635 | else |
| 636 | /* LINTED */ |
| 637 | buffmt(h, "%s: %d%s;", p, (int)v, u); |
| 638 | } |
| 639 | |
| 640 | |
| 641 | void |
| 642 | html_idcat(char *dst, const char *src, int sz) |
| 643 | { |
| 644 | int ssz; |
| 645 | |
| 646 | assert(sz); |
| 647 | |
| 648 | /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */ |
| 649 | |
| 650 | for ( ; *dst != '\0' && sz; dst++, sz--) |
| 651 | /* Jump to end. */ ; |
| 652 | |
| 653 | assert(sz > 2); |
| 654 | |
| 655 | /* We can't start with a number (bah). */ |
| 656 | |
| 657 | *dst++ = 'x'; |
| 658 | *dst = '\0'; |
| 659 | sz--; |
| 660 | |
| 661 | for ( ; *src != '\0' && sz > 1; src++) { |
| 662 | ssz = snprintf(dst, (size_t)sz, "%.2x", *src); |
| 663 | sz -= ssz; |
| 664 | dst += ssz; |
| 665 | } |
| 666 | } |