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Diffstat (limited to 'src/libid3tag/utf8.c')
-rw-r--r--src/libid3tag/utf8.c365
1 files changed, 0 insertions, 365 deletions
diff --git a/src/libid3tag/utf8.c b/src/libid3tag/utf8.c
index 4d8649a3..e69de29b 100644
--- a/src/libid3tag/utf8.c
+++ b/src/libid3tag/utf8.c
@@ -1,365 +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: utf8.c,v 1.9 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 "utf8.h"
-# include "ucs4.h"
-
-/*
- * NAME: utf8->length()
- * DESCRIPTION: return the number of ucs4 chars represented by a utf8 string
- */
-id3_length_t id3_utf8_length(id3_utf8_t const *utf8)
-{
- id3_length_t length = 0;
-
- while (*utf8) {
- if ((utf8[0] & 0x80) == 0x00)
- ++length;
- else if ((utf8[0] & 0xe0) == 0xc0 &&
- (utf8[1] & 0xc0) == 0x80) {
- if (((utf8[0] & 0x1fL) << 6) >= 0x00000080L) {
- ++length;
- utf8 += 1;
- }
- }
- else if ((utf8[0] & 0xf0) == 0xe0 &&
- (utf8[1] & 0xc0) == 0x80 &&
- (utf8[2] & 0xc0) == 0x80) {
- if ((((utf8[0] & 0x0fL) << 12) |
- ((utf8[1] & 0x3fL) << 6)) >= 0x00000800L) {
- ++length;
- utf8 += 2;
- }
- }
- else if ((utf8[0] & 0xf8) == 0xf0 &&
- (utf8[1] & 0xc0) == 0x80 &&
- (utf8[2] & 0xc0) == 0x80 &&
- (utf8[3] & 0xc0) == 0x80) {
- if ((((utf8[0] & 0x07L) << 18) |
- ((utf8[1] & 0x3fL) << 12)) >= 0x00010000L) {
- ++length;
- utf8 += 3;
- }
- }
- else if ((utf8[0] & 0xfc) == 0xf8 &&
- (utf8[1] & 0xc0) == 0x80 &&
- (utf8[2] & 0xc0) == 0x80 &&
- (utf8[3] & 0xc0) == 0x80 &&
- (utf8[4] & 0xc0) == 0x80) {
- if ((((utf8[0] & 0x03L) << 24) |
- ((utf8[0] & 0x3fL) << 18)) >= 0x00200000L) {
- ++length;
- utf8 += 4;
- }
- }
- else if ((utf8[0] & 0xfe) == 0xfc &&
- (utf8[1] & 0xc0) == 0x80 &&
- (utf8[2] & 0xc0) == 0x80 &&
- (utf8[3] & 0xc0) == 0x80 &&
- (utf8[4] & 0xc0) == 0x80 &&
- (utf8[5] & 0xc0) == 0x80) {
- if ((((utf8[0] & 0x01L) << 30) |
- ((utf8[0] & 0x3fL) << 24)) >= 0x04000000L) {
- ++length;
- utf8 += 5;
- }
- }
-
- ++utf8;
- }
-
- return length;
-}
-
-/*
- * NAME: utf8->size()
- * DESCRIPTION: return the encoding size of a utf8 string
- */
-id3_length_t id3_utf8_size(id3_utf8_t const *utf8)
-{
- id3_utf8_t const *ptr = utf8;
-
- while (*ptr)
- ++ptr;
-
- return ptr - utf8 + 1;
-}
-
-/*
- * NAME: utf8->ucs4duplicate()
- * DESCRIPTION: duplicate and decode a utf8 string into ucs4
- */
-id3_ucs4_t *id3_utf8_ucs4duplicate(id3_utf8_t const *utf8)
-{
- id3_ucs4_t *ucs4;
-
- ucs4 = malloc((id3_utf8_length(utf8) + 1) * sizeof(*ucs4));
- if (ucs4)
- id3_utf8_decode(utf8, ucs4);
-
- return release(ucs4);
-}
-
-/*
- * NAME: utf8->decodechar()
- * DESCRIPTION: decode a series of utf8 chars into a single ucs4 char
- */
-id3_length_t id3_utf8_decodechar(id3_utf8_t const *utf8, id3_ucs4_t *ucs4)
-{
- id3_utf8_t const *start = utf8;
-
- while (1) {
- if ((utf8[0] & 0x80) == 0x00) {
- *ucs4 = utf8[0];
- return utf8 - start + 1;
- }
- else if ((utf8[0] & 0xe0) == 0xc0 &&
- (utf8[1] & 0xc0) == 0x80) {
- *ucs4 =
- ((utf8[0] & 0x1fL) << 6) |
- ((utf8[1] & 0x3fL) << 0);
- if (*ucs4 >= 0x00000080L)
- return utf8 - start + 2;
- }
- else if ((utf8[0] & 0xf0) == 0xe0 &&
- (utf8[1] & 0xc0) == 0x80 &&
- (utf8[2] & 0xc0) == 0x80) {
- *ucs4 =
- ((utf8[0] & 0x0fL) << 12) |
- ((utf8[1] & 0x3fL) << 6) |
- ((utf8[2] & 0x3fL) << 0);
- if (*ucs4 >= 0x00000800L)
- return utf8 - start + 3;
- }
- else if ((utf8[0] & 0xf8) == 0xf0 &&
- (utf8[1] & 0xc0) == 0x80 &&
- (utf8[2] & 0xc0) == 0x80 &&
- (utf8[3] & 0xc0) == 0x80) {
- *ucs4 =
- ((utf8[0] & 0x07L) << 18) |
- ((utf8[1] & 0x3fL) << 12) |
- ((utf8[2] & 0x3fL) << 6) |
- ((utf8[3] & 0x3fL) << 0);
- if (*ucs4 >= 0x00010000L)
- return utf8 - start + 4;
- }
- else if ((utf8[0] & 0xfc) == 0xf8 &&
- (utf8[1] & 0xc0) == 0x80 &&
- (utf8[2] & 0xc0) == 0x80 &&
- (utf8[3] & 0xc0) == 0x80 &&
- (utf8[4] & 0xc0) == 0x80) {
- *ucs4 =
- ((utf8[0] & 0x03L) << 24) |
- ((utf8[1] & 0x3fL) << 18) |
- ((utf8[2] & 0x3fL) << 12) |
- ((utf8[3] & 0x3fL) << 6) |
- ((utf8[4] & 0x3fL) << 0);
- if (*ucs4 >= 0x00200000L)
- return utf8 - start + 5;
- }
- else if ((utf8[0] & 0xfe) == 0xfc &&
- (utf8[1] & 0xc0) == 0x80 &&
- (utf8[2] & 0xc0) == 0x80 &&
- (utf8[3] & 0xc0) == 0x80 &&
- (utf8[4] & 0xc0) == 0x80 &&
- (utf8[5] & 0xc0) == 0x80) {
- *ucs4 =
- ((utf8[0] & 0x01L) << 30) |
- ((utf8[1] & 0x3fL) << 24) |
- ((utf8[2] & 0x3fL) << 18) |
- ((utf8[3] & 0x3fL) << 12) |
- ((utf8[4] & 0x3fL) << 6) |
- ((utf8[5] & 0x3fL) << 0);
- if (*ucs4 >= 0x04000000L)
- return utf8 - start + 6;
- }
-
- ++utf8;
- }
-}
-
-/*
- * NAME: utf8->encodechar()
- * DESCRIPTION: encode a single ucs4 char into a series of up to 6 utf8 chars
- */
-id3_length_t id3_utf8_encodechar(id3_utf8_t *utf8, id3_ucs4_t ucs4)
-{
- if (ucs4 <= 0x0000007fL) {
- utf8[0] = ucs4;
-
- return 1;
- }
- else if (ucs4 <= 0x000007ffL) {
- utf8[0] = 0xc0 | ((ucs4 >> 6) & 0x1f);
- utf8[1] = 0x80 | ((ucs4 >> 0) & 0x3f);
-
- return 2;
- }
- else if (ucs4 <= 0x0000ffffL) {
- utf8[0] = 0xe0 | ((ucs4 >> 12) & 0x0f);
- utf8[1] = 0x80 | ((ucs4 >> 6) & 0x3f);
- utf8[2] = 0x80 | ((ucs4 >> 0) & 0x3f);
-
- return 3;
- }
- else if (ucs4 <= 0x001fffffL) {
- utf8[0] = 0xf0 | ((ucs4 >> 18) & 0x07);
- utf8[1] = 0x80 | ((ucs4 >> 12) & 0x3f);
- utf8[2] = 0x80 | ((ucs4 >> 6) & 0x3f);
- utf8[3] = 0x80 | ((ucs4 >> 0) & 0x3f);
-
- return 4;
- }
- else if (ucs4 <= 0x03ffffffL) {
- utf8[0] = 0xf8 | ((ucs4 >> 24) & 0x03);
- utf8[1] = 0x80 | ((ucs4 >> 18) & 0x3f);
- utf8[2] = 0x80 | ((ucs4 >> 12) & 0x3f);
- utf8[3] = 0x80 | ((ucs4 >> 6) & 0x3f);
- utf8[4] = 0x80 | ((ucs4 >> 0) & 0x3f);
-
- return 5;
- }
- else if (ucs4 <= 0x7fffffffL) {
- utf8[0] = 0xfc | ((ucs4 >> 30) & 0x01);
- utf8[1] = 0x80 | ((ucs4 >> 24) & 0x3f);
- utf8[2] = 0x80 | ((ucs4 >> 18) & 0x3f);
- utf8[3] = 0x80 | ((ucs4 >> 12) & 0x3f);
- utf8[4] = 0x80 | ((ucs4 >> 6) & 0x3f);
- utf8[5] = 0x80 | ((ucs4 >> 0) & 0x3f);
-
- return 6;
- }
-
- /* default */
-
- return id3_utf8_encodechar(utf8, ID3_UCS4_REPLACEMENTCHAR);
-}
-
-/*
- * NAME: utf8->decode()
- * DESCRIPTION: decode a complete utf8 string into a ucs4 string
- */
-void id3_utf8_decode(id3_utf8_t const *utf8, id3_ucs4_t *ucs4)
-{
- do
- utf8 += id3_utf8_decodechar(utf8, ucs4);
- while (*ucs4++);
-}
-
-/*
- * NAME: utf8->encode()
- * DESCRIPTION: encode a complete ucs4 string into a utf8 string
- */
-void id3_utf8_encode(id3_utf8_t *utf8, id3_ucs4_t const *ucs4)
-{
- do
- utf8 += id3_utf8_encodechar(utf8, *ucs4);
- while (*ucs4++);
-}
-
-/*
- * NAME: utf8->put()
- * DESCRIPTION: serialize a single utf8 character
- */
-id3_length_t id3_utf8_put(id3_byte_t **ptr, id3_utf8_t utf8)
-{
- if (ptr)
- *(*ptr)++ = utf8;
-
- return 1;
-}
-
-/*
- * NAME: utf8->get()
- * DESCRIPTION: deserialize a single utf8 character
- */
-id3_utf8_t id3_utf8_get(id3_byte_t const **ptr)
-{
- return *(*ptr)++;
-}
-
-/*
- * NAME: utf8->serialize()
- * DESCRIPTION: serialize a ucs4 string using utf8 encoding
- */
-id3_length_t id3_utf8_serialize(id3_byte_t **ptr, id3_ucs4_t const *ucs4,
- int terminate)
-{
- id3_length_t size = 0;
- id3_utf8_t utf8[6], *out;
-
- while (*ucs4) {
- switch (id3_utf8_encodechar(out = utf8, *ucs4++)) {
- case 6: size += id3_utf8_put(ptr, *out++);
- case 5: size += id3_utf8_put(ptr, *out++);
- case 4: size += id3_utf8_put(ptr, *out++);
- case 3: size += id3_utf8_put(ptr, *out++);
- case 2: size += id3_utf8_put(ptr, *out++);
- case 1: size += id3_utf8_put(ptr, *out++);
- case 0: break;
- }
- }
-
- if (terminate)
- size += id3_utf8_put(ptr, 0);
-
- return size;
-}
-
-/*
- * NAME: utf8->deserialize()
- * DESCRIPTION: deserialize a ucs4 string using utf8 encoding
- */
-id3_ucs4_t *id3_utf8_deserialize(id3_byte_t const **ptr, id3_length_t length)
-{
- id3_byte_t const *end;
- id3_utf8_t *utf8ptr, *utf8;
- id3_ucs4_t *ucs4;
-
- end = *ptr + length;
-
- utf8 = malloc((length + 1) * sizeof(*utf8));
- if (utf8 == 0)
- return 0;
-
- utf8ptr = utf8;
- while (end - *ptr > 0 && (*utf8ptr = id3_utf8_get(ptr)))
- ++utf8ptr;
-
- *utf8ptr = 0;
-
- ucs4 = malloc((id3_utf8_length(utf8) + 1) * sizeof(*ucs4));
- if (ucs4)
- id3_utf8_decode(utf8, ucs4);
-
- free(utf8);
-
- return ucs4;
-}
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