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gnome-vfs-mime-utils

gnome-vfs-mime-utils

Synopsis

#define             GNOME_VFS_MIME_TYPE_UNKNOWN
enum                GnomeVFSMimeEquivalence;
GnomeVFSMimeEquivalence  gnome_vfs_mime_type_get_equivalence
                                                        (const char *mime_type,
                                                         const char *base_mime_type);
gboolean            gnome_vfs_mime_type_is_equal        (const char *a,
                                                         const char *b);
const char *        gnome_vfs_get_mime_type_for_name    (const char *filename);
const char *        gnome_vfs_get_mime_type_for_data    (gconstpointer data,
                                                         int data_size);
const char *        gnome_vfs_get_mime_type_for_name_and_data
                                                        (const char *filename,
                                                         gconstpointer data,
                                                         gssize data_size);
char *              gnome_vfs_get_mime_type             (const char *text_uri);
char *              gnome_vfs_get_slow_mime_type        (const char *text_uri);

Description

Details

GNOME_VFS_MIME_TYPE_UNKNOWN

#define GNOME_VFS_MIME_TYPE_UNKNOWN "application/octet-stream"

The value returned for the MIME type when a file did not match any entries in the MIME database. May be treated as a file of an unknown type.


enum GnomeVFSMimeEquivalence

typedef enum {
  GNOME_VFS_MIME_UNRELATED,
  GNOME_VFS_MIME_IDENTICAL,
  GNOME_VFS_MIME_PARENT
} GnomeVFSMimeEquivalence;

Describes the possible relationship between two MIME types, returned by gnome_vfs_mime_type_get_equivalence().

GNOME_VFS_MIME_UNRELATED

The two MIME types are not related.

GNOME_VFS_MIME_IDENTICAL

The two MIME types are identical.

GNOME_VFS_MIME_PARENT

One of the two MIME types is a parent of the other one. Note that this relationship is transient, i.e. if a is a parent of b and b is a parent of c, a is also considered a parent of c.

gnome_vfs_mime_type_get_equivalence ()

GnomeVFSMimeEquivalence  gnome_vfs_mime_type_get_equivalence
                                                        (const char *mime_type,
                                                         const char *base_mime_type);

Compares mime_type to base_mime_type. There are three possible relationships between the two strings.

  • If they are identical and mime_type is the same as base_mime_type, then GNOME_VFS_MIME_IDENTICAL is returned. This would be the case if "audio/midi" and "audio/x-midi" are passed in.

  • If base_mime_type is a parent type of mime_type, then GNOME_VFS_MIME_PARENT is returned. As an example, "text/plain" is a parent of "text/rss", "image" is a parent of "image/png", and "application/octet-stream" is a parent of almost all types.

  • Finally, if the two mime types are unrelated, then GNOME_VFS_MIME_UNRELATED is returned.

mime_type :

a const char * containing a mime type, e.g. "image/png".

base_mime_type :

a const char * containing either a mime type or a base mime type.

Returns :

A GnomeVFSMimeEquivalence indicating the relationship between mime_type and base_mime_type.

gnome_vfs_mime_type_is_equal ()

gboolean            gnome_vfs_mime_type_is_equal        (const char *a,
                                                         const char *b);

Compares two mime types to determine if they are equivalent. They are equivalent if and only if they refer to the same mime type.

a :

a const char * containing a mime type, e.g. "image/png".

b :

a const char * containing a mime type, e.g. "image/png".

Returns :

TRUE, if a and b are equivalent mime types.

gnome_vfs_get_mime_type_for_name ()

const char *        gnome_vfs_get_mime_type_for_name    (const char *filename);

Determine the mime type for filename. The file filename may not exist, this function does not access the actual file. If the mime-type cannot be determined, GNOME_VFS_MIME_TYPE_UNKNOWN is returned.

filename :

a filename.

Returns :

the mime-type for this filename or GNOME_VFS_MIME_TYPE_UNKNOWN if mime-type could not be determined.

Since 2.14


gnome_vfs_get_mime_type_for_data ()

const char *        gnome_vfs_get_mime_type_for_data    (gconstpointer data,
                                                         int data_size);

Tries to guess the mime type of the data in data using the magic patterns.

data :

a pointer to data in memory.

data_size :

size of the data.

Returns :

the mime-type for data.

gnome_vfs_get_mime_type_for_name_and_data ()

const char *        gnome_vfs_get_mime_type_for_name_and_data
                                                        (const char *filename,
                                                         gconstpointer data,
                                                         gssize data_size);

Determine the mime-type for filename and data. This function tries to be smart (e.g. mime subclassing) about returning the right mime-type by looking at both the data and the filename. The file will not be accessed. If the mime-type cannot be determined, GNOME_VFS_MIME_TYPE_UNKNOWN is returned.

filename :

a filename.

data :

a pointer to the data in the memory

data_size :

the size of data

Returns :

the mime-type for this filename or GNOME_VFS_MIME_TYPE_UNKNOWN if mime-type could not be determined.

Since 2.14


gnome_vfs_get_mime_type ()

char *              gnome_vfs_get_mime_type             (const char *text_uri);

Determine the mime type of text_uri. The mime type is determined in the same way as by gnome_vfs_get_file_info(). This is meant as a convenient function for times when you only want the mime type.

text_uri :

path of the file for which to get the mime type.

Returns :

The mime type, or NULL if there is an error reading the file.

gnome_vfs_get_slow_mime_type ()

char *              gnome_vfs_get_slow_mime_type        (const char *text_uri);

Determine the mime type of text_uri. The mime type is determined in the same way as by gnome_vfs_get_file_info(). This is meant as a convenience function for times when you only want the mime type.

text_uri :

URI of the file for which to get the mime type

Returns :

The mime type, or NULL if there is an error reading the file.

Since 2.14

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