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Diffstat (limited to 'src/libid3tag/utf16.c')
-rw-r--r--src/libid3tag/utf16.c286
1 files changed, 0 insertions, 286 deletions
diff --git a/src/libid3tag/utf16.c b/src/libid3tag/utf16.c
index 70ee9d5a..e69de29b 100644
--- a/src/libid3tag/utf16.c
+++ b/src/libid3tag/utf16.c
@@ -1,286 +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: utf16.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 "utf16.h"
-# include "ucs4.h"
-
-/*
- * NAME: utf16->length()
- * DESCRIPTION: return the number of ucs4 chars represented by a utf16 string
- */
-id3_length_t id3_utf16_length(id3_utf16_t const *utf16)
-{
- id3_length_t length = 0;
-
- while (*utf16) {
- if (utf16[0] < 0xd800 || utf16[0] > 0xdfff)
- ++length;
- else if (utf16[0] >= 0xd800 && utf16[0] <= 0xdbff &&
- utf16[1] >= 0xdc00 && utf16[1] <= 0xdfff) {
- ++length;
- ++utf16;
- }
-
- ++utf16;
- }
-
- return length;
-}
-
-/*
- * NAME: utf16->size()
- * DESCRIPTION: return the encoding size of a utf16 string
- */
-id3_length_t id3_utf16_size(id3_utf16_t const *utf16)
-{
- id3_utf16_t const *ptr = utf16;
-
- while (*ptr)
- ++ptr;
-
- return ptr - utf16 + 1;
-}
-
-/*
- * NAME: utf16->ucs4duplicate()
- * DESCRIPTION: duplicate and decode a utf16 string into ucs4
- */
-id3_ucs4_t *id3_utf16_ucs4duplicate(id3_utf16_t const *utf16)
-{
- id3_ucs4_t *ucs4;
-
- ucs4 = malloc((id3_utf16_length(utf16) + 1) * sizeof(*ucs4));
- if (ucs4)
- id3_utf16_decode(utf16, ucs4);
-
- return release(ucs4);
-}
-
-/*
- * NAME: utf16->decodechar()
- * DESCRIPTION: decode a series of utf16 chars into a single ucs4 char
- */
-id3_length_t id3_utf16_decodechar(id3_utf16_t const *utf16, id3_ucs4_t *ucs4)
-{
- id3_utf16_t const *start = utf16;
-
- while (1) {
- if (utf16[0] < 0xd800 || utf16[0] > 0xdfff) {
- *ucs4 = utf16[0];
- return utf16 - start + 1;
- }
- else if (utf16[0] >= 0xd800 && utf16[0] <= 0xdbff &&
- utf16[1] >= 0xdc00 && utf16[1] <= 0xdfff) {
- *ucs4 = (((utf16[0] & 0x03ffL) << 10) |
- ((utf16[1] & 0x03ffL) << 0)) + 0x00010000L;
- return utf16 - start + 2;
- }
-
- ++utf16;
- }
-}
-
-/*
- * NAME: utf16->encodechar()
- * DESCRIPTION: encode a single ucs4 char into a series of up to 2 utf16 chars
- */
-id3_length_t id3_utf16_encodechar(id3_utf16_t *utf16, id3_ucs4_t ucs4)
-{
- if (ucs4 < 0x00010000L) {
- utf16[0] = ucs4;
-
- return 1;
- }
- else if (ucs4 < 0x00110000L) {
- ucs4 -= 0x00010000L;
-
- utf16[0] = ((ucs4 >> 10) & 0x3ff) | 0xd800;
- utf16[1] = ((ucs4 >> 0) & 0x3ff) | 0xdc00;
-
- return 2;
- }
-
- /* default */
-
- return id3_utf16_encodechar(utf16, ID3_UCS4_REPLACEMENTCHAR);
-}
-
-/*
- * NAME: utf16->decode()
- * DESCRIPTION: decode a complete utf16 string into a ucs4 string
- */
-void id3_utf16_decode(id3_utf16_t const *utf16, id3_ucs4_t *ucs4)
-{
- do
- utf16 += id3_utf16_decodechar(utf16, ucs4);
- while (*ucs4++);
-}
-
-/*
- * NAME: utf16->encode()
- * DESCRIPTION: encode a complete ucs4 string into a utf16 string
- */
-void id3_utf16_encode(id3_utf16_t *utf16, id3_ucs4_t const *ucs4)
-{
- do
- utf16 += id3_utf16_encodechar(utf16, *ucs4);
- while (*ucs4++);
-}
-
-/*
- * NAME: utf16->put()
- * DESCRIPTION: serialize a single utf16 character
- */
-id3_length_t id3_utf16_put(id3_byte_t **ptr, id3_utf16_t utf16,
- enum id3_utf16_byteorder byteorder)
-{
- if (ptr) {
- switch (byteorder) {
- default:
- case ID3_UTF16_BYTEORDER_BE:
- (*ptr)[0] = (utf16 >> 8) & 0xff;
- (*ptr)[1] = (utf16 >> 0) & 0xff;
- break;
-
- case ID3_UTF16_BYTEORDER_LE:
- (*ptr)[0] = (utf16 >> 0) & 0xff;
- (*ptr)[1] = (utf16 >> 8) & 0xff;
- break;
- }
-
- *ptr += 2;
- }
-
- return 2;
-}
-
-/*
- * NAME: utf16->get()
- * DESCRIPTION: deserialize a single utf16 character
- */
-id3_utf16_t id3_utf16_get(id3_byte_t const **ptr,
- enum id3_utf16_byteorder byteorder)
-{
- id3_utf16_t utf16;
-
- switch (byteorder) {
- default:
- case ID3_UTF16_BYTEORDER_BE:
- utf16 =
- ((*ptr)[0] << 8) |
- ((*ptr)[1] << 0);
- break;
-
- case ID3_UTF16_BYTEORDER_LE:
- utf16 =
- ((*ptr)[0] << 0) |
- ((*ptr)[1] << 8);
- break;
- }
-
- *ptr += 2;
-
- return utf16;
-}
-
-/*
- * NAME: utf16->serialize()
- * DESCRIPTION: serialize a ucs4 string using utf16 encoding
- */
-id3_length_t id3_utf16_serialize(id3_byte_t **ptr, id3_ucs4_t const *ucs4,
- enum id3_utf16_byteorder byteorder,
- int terminate)
-{
- id3_length_t size = 0;
- id3_utf16_t utf16[2], *out;
-
- if (byteorder == ID3_UTF16_BYTEORDER_ANY)
- size += id3_utf16_put(ptr, 0xfeff, byteorder);
-
- while (*ucs4) {
- switch (id3_utf16_encodechar(out = utf16, *ucs4++)) {
- case 2: size += id3_utf16_put(ptr, *out++, byteorder);
- case 1: size += id3_utf16_put(ptr, *out++, byteorder);
- case 0: break;
- }
- }
-
- if (terminate)
- size += id3_utf16_put(ptr, 0, byteorder);
-
- return size;
-}
-
-/*
- * NAME: utf16->deserialize()
- * DESCRIPTION: deserialize a ucs4 string using utf16 encoding
- */
-id3_ucs4_t *id3_utf16_deserialize(id3_byte_t const **ptr, id3_length_t length,
- enum id3_utf16_byteorder byteorder)
-{
- id3_byte_t const *end;
- id3_utf16_t *utf16ptr, *utf16;
- id3_ucs4_t *ucs4;
-
- end = *ptr + (length & ~1);
-
- utf16 = malloc((length / 2 + 1) * sizeof(*utf16));
- if (utf16 == 0)
- return 0;
-
- if (byteorder == ID3_UTF16_BYTEORDER_ANY && end - *ptr > 0) {
- switch (((*ptr)[0] << 8) |
- ((*ptr)[1] << 0)) {
- case 0xfeff:
- byteorder = ID3_UTF16_BYTEORDER_BE;
- *ptr += 2;
- break;
-
- case 0xfffe:
- byteorder = ID3_UTF16_BYTEORDER_LE;
- *ptr += 2;
- break;
- }
- }
-
- utf16ptr = utf16;
- while (end - *ptr > 0 && (*utf16ptr = id3_utf16_get(ptr, byteorder)))
- ++utf16ptr;
-
- *utf16ptr = 0;
-
- ucs4 = malloc((id3_utf16_length(utf16) + 1) * sizeof(*ucs4));
- if (ucs4)
- id3_utf16_decode(utf16, ucs4);
-
- free(utf16);
-
- return ucs4;
-}
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