/* exif-utils.c
*
- * Copyright © 2001 Lutz Müller <lutz@users.sourceforge.net>
+ * Copyright (c) 2001 Lutz Mueller <lutz@users.sourceforge.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
*/
#include <config.h>
if (!b) return 0;
switch (order) {
case EXIF_BYTE_ORDER_MOTOROLA:
- return ((b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3]);
+ return (((uint32_t)b[0] << 24) | ((uint32_t)b[1] << 16) | ((uint32_t)b[2] << 8) | (uint32_t)b[3]);
case EXIF_BYTE_ORDER_INTEL:
- return ((b[3] << 24) | (b[2] << 16) | (b[1] << 8) | b[0]);
+ return (((uint32_t)b[3] << 24) | ((uint32_t)b[2] << 16) | ((uint32_t)b[1] << 8) | (uint32_t)b[0]);
}
/* Won't be reached */
exif_set_slong (buf, order, value.numerator);
exif_set_slong (buf + 4, order, value.denominator);
}
+
+/*! This function converts rather UCS-2LE than UTF-16 to UTF-8.
+ * It should really be replaced by iconv().
+ */
+void
+exif_convert_utf16_to_utf8 (char *out, const unsigned char *in, int maxlen)
+{
+ if (maxlen <= 0) {
+ return;
+ }
+ for (;;) {
+ ExifShort v = exif_get_short(in, EXIF_BYTE_ORDER_INTEL);
+ if (!v)
+ break;
+ if (v < 0x80) {
+ if (maxlen > 1) {
+ *out++ = (char)v;
+ maxlen--;
+ } else {
+ break;
+ }
+ } else if (v < 0x800) {
+ if (maxlen > 2) {
+ *out++ = ((v >> 6) & 0x1F) | 0xC0;
+ *out++ = (v & 0x3F) | 0x80;
+ maxlen -= 2;
+ } else {
+ break;
+ }
+ } else {
+ if (maxlen > 3) {
+ *out++ = ((v >> 12) & 0x0F) | 0xE0;
+ *out++ = ((v >> 6) & 0x3F) | 0x80;
+ *out++ = (v & 0x3F) | 0x80;
+ maxlen -= 3;
+ } else {
+ break;
+ }
+ }
+ in += 2;
+ }
+ *out = 0;
+}