int
xdg_mime_mime_type_subclass (const char *mime,
const char *base)
{
xdg_mime_init ();
return _xdg_mime_mime_type_subclass (mime, base);
}
const char *
_xdg_mime_magic_lookup_data (XdgMimeMagic *mime_magic,
const void *data,
size_t len,
const char *mime_types[],
int n_mime_types)
{
XdgMimeMagicMatch *match;
const char *mime_type;
int n;
mime_type = NULL;
for (match = mime_magic->match_list; match; match = match->next)
{
if (_xdg_mime_magic_match_compare_to_data (match, data, len))
{
if ((mime_type == NULL) || (_xdg_mime_mime_type_subclass (match->mime_type, mime_type))) {
mime_type = match->mime_type;
}
}
else
{
for (n = 0; n < n_mime_types; n++)
{
if (mime_types[n] &&
_xdg_mime_mime_type_equal (mime_types[n], match->mime_type))
mime_types[n] = NULL;
}
}
}
if (mime_type == NULL)
{
for (n = 0; n < n_mime_types; n++)
{
if (mime_types[n])
mime_type = mime_types[n];
}
}
return mime_type;
}
int
_xdg_mime_mime_type_subclass (const char *mime,
const char *base)
{
const char *umime, *ubase;
const char **parents;
if (_caches)
return _xdg_mime_cache_mime_type_subclass (mime, base);
umime = _xdg_mime_unalias_mime_type (mime);
ubase = _xdg_mime_unalias_mime_type (base);
if (strcmp (umime, ubase) == 0)
return 1;
#if 1
/* Handle supertypes */
if (xdg_mime_is_super_type (ubase) &&
xdg_mime_media_type_equal (umime, ubase))
return 1;
#endif
/* Handle special cases text/plain and application/octet-stream */
if (strcmp (ubase, "text/plain") == 0 &&
strncmp (umime, "text/", 5) == 0)
return 1;
if (strcmp (ubase, "application/octet-stream") == 0 &&
strncmp (umime, "inode/", 6) != 0)
return 1;
parents = _xdg_mime_parent_list_lookup (parent_list, umime);
for (; parents && *parents; parents++)
{
if (_xdg_mime_mime_type_subclass (*parents, ubase))
return 1;
}
return 0;
}
const char *
_xdg_mime_magic_lookup_data (XdgMimeMagic *mime_magic,
const void *data,
size_t len,
const char *mime_types[],
int n_mime_types)
{
XdgMimeMagicMatch *match;
const char *mime_type;
int n;
int priority;
int had_match;
mime_type = NULL;
priority = 0;
had_match = 0;
for (match = mime_magic->match_list; match; match = match->next)
{
if (_xdg_mime_magic_match_compare_to_data (match, data, len))
{
if (!had_match || match->priority > priority ||
(mime_type != NULL && _xdg_mime_mime_type_subclass (match->mime_type, mime_type)))
{
mime_type = match->mime_type;
priority = match->priority;
}
/* Is this another match at same priority which is not the same
* type again, or a sub-type */
else if (had_match && match->priority == priority && mime_type &&
strcmp(mime_type, match->mime_type)!=0 &&
!_xdg_mime_mime_type_subclass (mime_type, match->mime_type))
/* multiple unrelated patterns with the same priority matched,
* so we can't tell what type this is. */
mime_type = NULL;
had_match = 1;
}
else
{
for (n = 0; n < n_mime_types; n++)
{
if (mime_types[n] &&
_xdg_mime_mime_type_equal (mime_types[n], match->mime_type))
mime_types[n] = NULL;
}
}
}
if (mime_type == NULL)
{
for (n = 0; n < n_mime_types; n++)
{
if (mime_types[n])
mime_type = mime_types[n];
}
}
if (mime_type == NULL)
{
if(_rox_buffer_looks_like_text(data, len))
mime_type = XDG_MIME_TYPE_UNKNOWN_TEXT;
}
return mime_type;
}
