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Diffstat (limited to 'libid3tag/utf16.c')
-rw-r--r--libid3tag/utf16.c383
1 files changed, 197 insertions, 186 deletions
diff --git a/libid3tag/utf16.c b/libid3tag/utf16.c
index 70ee9d5..f30ebc5 100644
--- a/libid3tag/utf16.c
+++ b/libid3tag/utf16.c
@@ -19,268 +19,279 @@
* $Id: utf16.c,v 1.9 2004/01/23 09:41:32 rob Exp $
*/
-# ifdef HAVE_CONFIG_H
-# include "config.h"
-# endif
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
-# include "global.h"
+#include "global.h"
-# include <stdlib.h>
+#include <stdlib.h>
-# include "id3tag.h"
-# include "utf16.h"
-# include "ucs4.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
+ * 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
+id3_utf16_length(id3_utf16_t const *utf16)
{
- id3_length_t length = 0;
+ 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;
- }
+ 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;
- }
+ ++utf16;
+ }
- return length;
+ return length;
}
/*
- * NAME: utf16->size()
- * DESCRIPTION: return the encoding size of a utf16 string
+ * NAME: utf16->size()
+ * DESCRIPTION: return the encoding size of a utf16 string
*/
-id3_length_t id3_utf16_size(id3_utf16_t const *utf16)
+id3_length_t
+id3_utf16_size(id3_utf16_t const *utf16)
{
- id3_utf16_t const *ptr = utf16;
+ id3_utf16_t const *ptr = utf16;
- while (*ptr)
- ++ptr;
+ while (*ptr)
+ ++ptr;
- return ptr - utf16 + 1;
+ return ptr - utf16 + 1;
}
/*
- * NAME: utf16->ucs4duplicate()
- * DESCRIPTION: duplicate and decode a utf16 string into ucs4
+ * 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 *
+id3_utf16_ucs4duplicate(id3_utf16_t const *utf16)
{
- id3_ucs4_t *ucs4;
+ id3_ucs4_t *ucs4;
- ucs4 = malloc((id3_utf16_length(utf16) + 1) * sizeof(*ucs4));
- if (ucs4)
- id3_utf16_decode(utf16, ucs4);
+ ucs4 = malloc((id3_utf16_length(utf16) + 1) * sizeof(*ucs4));
+ if (ucs4)
+ id3_utf16_decode(utf16, ucs4);
- return release(ucs4);
+ return release(ucs4);
}
/*
- * NAME: utf16->decodechar()
- * DESCRIPTION: decode a series of utf16 chars into a single ucs4 char
+ * 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_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;
- }
+ 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
+ * 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)
+id3_length_t
+id3_utf16_encodechar(id3_utf16_t * utf16, id3_ucs4_t ucs4)
{
- if (ucs4 < 0x00010000L) {
- utf16[0] = ucs4;
+ if (ucs4 < 0x00010000L) {
+ utf16[0] = ucs4;
- return 1;
- }
- else if (ucs4 < 0x00110000L) {
- ucs4 -= 0x00010000L;
+ return 1;
+ } else if (ucs4 < 0x00110000L) {
+ ucs4 -= 0x00010000L;
- utf16[0] = ((ucs4 >> 10) & 0x3ff) | 0xd800;
- utf16[1] = ((ucs4 >> 0) & 0x3ff) | 0xdc00;
+ utf16[0] = ((ucs4 >> 10) & 0x3ff) | 0xd800;
+ utf16[1] = ((ucs4 >> 0) & 0x3ff) | 0xdc00;
- return 2;
- }
+ return 2;
+ }
- /* default */
+ /*
+ * default
+ */
- return id3_utf16_encodechar(utf16, ID3_UCS4_REPLACEMENTCHAR);
+ return id3_utf16_encodechar(utf16, ID3_UCS4_REPLACEMENTCHAR);
}
/*
- * NAME: utf16->decode()
- * DESCRIPTION: decode a complete utf16 string into a ucs4 string
+ * 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)
+void
+id3_utf16_decode(id3_utf16_t const *utf16, id3_ucs4_t * ucs4)
{
- do
- utf16 += id3_utf16_decodechar(utf16, ucs4);
- while (*ucs4++);
+ do
+ utf16 += id3_utf16_decodechar(utf16, ucs4);
+ while (*ucs4++);
}
/*
- * NAME: utf16->encode()
- * DESCRIPTION: encode a complete ucs4 string into a utf16 string
+ * 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)
+void
+id3_utf16_encode(id3_utf16_t * utf16, id3_ucs4_t const *ucs4)
{
- do
- utf16 += id3_utf16_encodechar(utf16, *ucs4);
- while (*ucs4++);
+ do
+ utf16 += id3_utf16_encodechar(utf16, *ucs4);
+ while (*ucs4++);
}
/*
- * NAME: utf16->put()
- * DESCRIPTION: serialize a single utf16 character
+ * 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)
+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;
+ 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
+ * 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
+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;
-}
+ id3_utf16_t 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;
+ switch (byteorder) {
+ default:
+ case ID3_UTF16_BYTEORDER_BE:
+ utf16 = ((*ptr)[0] << 8) | ((*ptr)[1] << 0);
+ break;
- if (byteorder == ID3_UTF16_BYTEORDER_ANY)
- size += id3_utf16_put(ptr, 0xfeff, byteorder);
+ case ID3_UTF16_BYTEORDER_LE:
+ utf16 = ((*ptr)[0] << 0) | ((*ptr)[1] << 8);
+ break;
+ }
- 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;
- }
- }
+ *ptr += 2;
- if (terminate)
- size += id3_utf16_put(ptr, 0, byteorder);
+ return utf16;
+}
- return size;
+/*
+ * 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
+ * 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_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;
+ id3_byte_t const *end;
+ id3_utf16_t *utf16ptr,
+ *utf16;
+ id3_ucs4_t *ucs4;
- end = *ptr + (length & ~1);
+ end = *ptr + (length & ~1);
- utf16 = malloc((length / 2 + 1) * sizeof(*utf16));
- if (utf16 == 0)
- return 0;
+ 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;
+ 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;
- }
- }
+ case 0xfffe:
+ byteorder = ID3_UTF16_BYTEORDER_LE;
+ *ptr += 2;
+ break;
+ }
+ }
- utf16ptr = utf16;
- while (end - *ptr > 0 && (*utf16ptr = id3_utf16_get(ptr, byteorder)))
- ++utf16ptr;
+ utf16ptr = utf16;
+ while (end - *ptr > 0
+ && (*utf16ptr = id3_utf16_get(ptr, byteorder)))
+ ++utf16ptr;
- *utf16ptr = 0;
+ *utf16ptr = 0;
- ucs4 = malloc((id3_utf16_length(utf16) + 1) * sizeof(*ucs4));
- if (ucs4)
- id3_utf16_decode(utf16, ucs4);
+ ucs4 = malloc((id3_utf16_length(utf16) + 1) * sizeof(*ucs4));
+ if (ucs4)
+ id3_utf16_decode(utf16, ucs4);
- free(utf16);
+ free(utf16);
- return ucs4;
+ return ucs4;
}

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