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Diffstat (limited to 'src/libid3tag/ucs4.c')
| -rw-r--r-- | src/libid3tag/ucs4.c | 224 |
1 files changed, 0 insertions, 224 deletions
diff --git a/src/libid3tag/ucs4.c b/src/libid3tag/ucs4.c index 15dace86..e69de29b 100644 --- a/src/libid3tag/ucs4.c +++ b/src/libid3tag/ucs4.c @@ -1,224 +0,0 @@ -/* - * libid3tag - ID3 tag manipulation library - * Copyright (C) 2000-2004 Underbit Technologies, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * $Id: ucs4.c,v 1.13 2004/01/23 09:41:32 rob Exp $ - */ - -# ifdef HAVE_CONFIG_H -# include "config.h" -# endif - -# include "global.h" - -# include <stdlib.h> - -# include "id3tag.h" -# include "ucs4.h" -# include "latin1.h" -# include "utf16.h" -# include "utf8.h" - -id3_ucs4_t const id3_ucs4_empty[] = { 0 }; - -/* - * NAME: ucs4->length() - * DESCRIPTION: return the number of ucs4 chars represented by a ucs4 string - */ -id3_length_t id3_ucs4_length(id3_ucs4_t const *ucs4) -{ - id3_ucs4_t const *ptr = ucs4; - - while (*ptr) - ++ptr; - - return ptr - ucs4; -} - -/* - * NAME: ucs4->size() - * DESCRIPTION: return the encoding size of a ucs4 string - */ -id3_length_t id3_ucs4_size(id3_ucs4_t const *ucs4) -{ - return id3_ucs4_length(ucs4) + 1; -} - -/* - * NAME: ucs4->latin1size() - * DESCRIPTION: return the encoding size of a latin1-encoded ucs4 string - */ -id3_length_t id3_ucs4_latin1size(id3_ucs4_t const *ucs4) -{ - return id3_ucs4_size(ucs4); -} - -/* - * NAME: ucs4->utf16size() - * DESCRIPTION: return the encoding size of a utf16-encoded ucs4 string - */ -id3_length_t id3_ucs4_utf16size(id3_ucs4_t const *ucs4) -{ - id3_length_t size = 0; - - while (*ucs4) { - ++size; - if (*ucs4 >= 0x00010000L && - *ucs4 <= 0x0010ffffL) - ++size; - - ++ucs4; - } - - return size + 1; -} - -/* - * NAME: ucs4->utf8size() - * DESCRIPTION: return the encoding size of a utf8-encoded ucs4 string - */ -id3_length_t id3_ucs4_utf8size(id3_ucs4_t const *ucs4) -{ - id3_length_t size = 0; - - while (*ucs4) { - if (*ucs4 <= 0x0000007fL) - size += 1; - else if (*ucs4 <= 0x000007ffL) - size += 2; - else if (*ucs4 <= 0x0000ffffL) - size += 3; - else if (*ucs4 <= 0x001fffffL) - size += 4; - else if (*ucs4 <= 0x03ffffffL) - size += 5; - else if (*ucs4 <= 0x7fffffffL) - size += 6; - else - size += 2; /* based on U+00B7 replacement char */ - - ++ucs4; - } - - return size + 1; -} - -/* - * NAME: ucs4->latin1duplicate() - * DESCRIPTION: duplicate and encode a ucs4 string into latin1 - */ -id3_latin1_t *id3_ucs4_latin1duplicate(id3_ucs4_t const *ucs4) -{ - id3_latin1_t *latin1; - - latin1 = malloc(id3_ucs4_latin1size(ucs4) * sizeof(*latin1)); - if (latin1) - id3_latin1_encode(latin1, ucs4); - - return release(latin1); -} - -/* - * NAME: ucs4->utf16duplicate() - * DESCRIPTION: duplicate and encode a ucs4 string into utf16 - */ -id3_utf16_t *id3_ucs4_utf16duplicate(id3_ucs4_t const *ucs4) -{ - id3_utf16_t *utf16; - - utf16 = malloc(id3_ucs4_utf16size(ucs4) * sizeof(*utf16)); - if (utf16) - id3_utf16_encode(utf16, ucs4); - - return release(utf16); -} - -/* - * NAME: ucs4->utf8duplicate() - * DESCRIPTION: duplicate and encode a ucs4 string into utf8 - */ -id3_utf8_t *id3_ucs4_utf8duplicate(id3_ucs4_t const *ucs4) -{ - id3_utf8_t *utf8; - - utf8 = malloc(id3_ucs4_utf8size(ucs4) * sizeof(*utf8)); - if (utf8) - id3_utf8_encode(utf8, ucs4); - - return release(utf8); -} - -/* - * NAME: ucs4->copy() - * DESCRIPTION: copy a ucs4 string - */ -void id3_ucs4_copy(id3_ucs4_t *dest, id3_ucs4_t const *src) -{ - while ((*dest++ = *src++)) - ; -} - -/* - * NAME: ucs4->duplicate() - * DESCRIPTION: duplicate a ucs4 string - */ -id3_ucs4_t *id3_ucs4_duplicate(id3_ucs4_t const *src) -{ - id3_ucs4_t *ucs4; - - ucs4 = malloc(id3_ucs4_size(src) * sizeof(*ucs4)); - if (ucs4) - id3_ucs4_copy(ucs4, src); - - return ucs4; -} - -/* - * NAME: ucs4->putnumber() - * DESCRIPTION: write a ucs4 string containing a (positive) decimal number - */ -void id3_ucs4_putnumber(id3_ucs4_t *ucs4, unsigned long number) -{ - int digits[10], *digit; - - digit = digits; - - do { - *digit++ = number % 10; - number /= 10; - } - while (number); - - while (digit != digits) - *ucs4++ = '0' + *--digit; - - *ucs4 = 0; -} - -/* - * NAME: ucs4->getnumber() - * DESCRIPTION: read a ucs4 string containing a (positive) decimal number - */ -unsigned long id3_ucs4_getnumber(id3_ucs4_t const *ucs4) -{ - unsigned long number = 0; - - while (*ucs4 >= '0' && *ucs4 <= '9') - number = 10 * number + (*ucs4++ - '0'); - - return number; -} |