/* Write a libvips NULL-terminated utf-8 string into a entry tagged with a
* encoding. UserComment is like this, for example.
*/
static void
vips_exif_set_string_encoding( ExifData *ed,
ExifEntry *entry, unsigned long component, const char *data )
{
char *str;
int len;
str = drop_tail( data );
/* libexif can only really save ASCII to things like UserComment.
*/
#ifdef HAVE_G_STR_TO_ASCII
{
char *ascii;
ascii = g_str_to_ascii( str, NULL );
g_free( str );
str = ascii;
}
#endif /*HAVE_G_STR_TO_ASCII*/
/* libexif comment strings are not NULL-terminated, and have an
* encoding tag (always ASCII) in the first 8 bytes.
*/
len = strlen( str );
vips_exif_alloc_string( entry, sizeof( ASCII_COMMENT ) - 1 + len );
memcpy( entry->data, ASCII_COMMENT, sizeof( ASCII_COMMENT ) - 1 );
memcpy( entry->data + sizeof( ASCII_COMMENT ) - 1, str, len );
g_free( str );
}
/* Write a libvips NULL-terminated utf-8 string into an ASCII entry. Tags like
* ImageDescription work like this.
*/
static void
vips_exif_set_string_ascii( ExifData *ed,
ExifEntry *entry, unsigned long component, const char *data )
{
char *str;
int len;
str = drop_tail( data );
/* libexif can only really save ASCII to things like UserComment.
*/
#ifdef HAVE_G_STR_TO_ASCII
{
char *ascii;
ascii = g_str_to_ascii( str, NULL );
g_free( str );
str = ascii;
}
#endif /*HAVE_G_STR_TO_ASCII*/
/* ASCII strings are NULL-terminated.
*/
len = strlen( str );
vips_exif_alloc_string( entry, len + 1 );
memcpy( entry->data, str, len + 1 );
entry->format = EXIF_FORMAT_ASCII;
g_free( str );
}
int item_link(item *it) {
int needed = it->ntotal;
unsigned long long maxbytes;
int maxitems;
maxbytes = settings.maxbytes ? settings.maxbytes : UINT_MAX;
maxitems = settings.maxitems ? settings.maxitems : INT_MAX;
while(items_tail && (stats.curr_bytes + needed > maxbytes ||
stats.curr_items + 1 > maxitems)) {
drop_tail();
}
it->it_flags |= ITEM_LINKED;
it->time = time(0);
assoc_insert(it->key, (void *)it);
stats.curr_bytes += needed;
stats.curr_items += 1;
stats.total_items += 1;
item_link_q(it);
return 1;
}
/* Write a libvips NULL-terminated utf-8 string into a utf16 entry.
*/
static void
vips_exif_set_string_utf16( ExifData *ed,
ExifEntry *entry, unsigned long component, const char *data )
{
char *str;
gunichar2 *utf16;
glong len;
str = drop_tail( data );
utf16 = g_utf8_to_utf16( str, -1, NULL, &len, NULL );
/* libexif utf16 strings are NULL-terminated.
*/
vips_exif_alloc_string( entry, (len + 1) * 2 );
memcpy( entry->data, utf16, (len + 1) * 2 );
entry->format = EXIF_FORMAT_BYTE;
g_free( utf16 );
g_free( str );
}
