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Algorithmic Sniff Buffer

Name

Algorithmic Sniff Buffer -- algorithmic detection of mime type for select file types

Synopsis



GnomeVFSResult (*GnomeVFSSniffBufferSeekCall)
                                            (gpointer context,
                                             GnomeVFSSeekPosition whence,
                                             GnomeVFSFileOffset offset);
GnomeVFSResult (*GnomeVFSSniffBufferReadCall)
                                            (gpointer context,
                                             gpointer buffer,
                                             GnomeVFSFileSize bytes,
                                             GnomeVFSFileSize *bytes_read);
void        gnome_vfs_mime_clear_magic_table
                                            (void);
GnomeVFSMimeSniffBuffer* gnome_vfs_mime_sniff_buffer_new_from_handle
                                            (GnomeVFSHandle *file);
GnomeVFSMimeSniffBuffer* gnome_vfs_mime_sniff_buffer_new_from_memory
                                            (const guchar *buffer,
                                             gssize buffer_size);
GnomeVFSMimeSniffBuffer* gnome_vfs_mime_sniff_buffer_new_from_existing_data
                                            (const guchar *buffer,
                                             gssize buffer_size);
GnomeVFSMimeSniffBuffer* gnome_vfs_mime_sniff_buffer_new_generic
                                            (GnomeVFSSniffBufferSeekCall seek_callback,
                                             GnomeVFSSniffBufferReadCall read_callback,
                                             gpointer context);
void        gnome_vfs_mime_sniff_buffer_free
                                            (GnomeVFSMimeSniffBuffer *buffer);
GnomeVFSResult gnome_vfs_mime_sniff_buffer_get
                                            (GnomeVFSMimeSniffBuffer *buffer,
                                             gssize size);
const char* gnome_vfs_get_mime_type_for_buffer
                                            (GnomeVFSMimeSniffBuffer *buffer);
gboolean    gnome_vfs_sniff_buffer_looks_like_text
                                            (GnomeVFSMimeSniffBuffer *buffer);
gboolean    gnome_vfs_sniff_buffer_looks_like_mp3
                                            (GnomeVFSMimeSniffBuffer *buffer);
gboolean    gnome_vfs_sniff_buffer_looks_like_gzip
                                            (GnomeVFSMimeSniffBuffer *sniff_buffer,
                                             const char *file_name);

Description

Details

GnomeVFSSniffBufferSeekCall ()

GnomeVFSResult (*GnomeVFSSniffBufferSeekCall)
                                            (gpointer context,
                                             GnomeVFSSeekPosition whence,
                                             GnomeVFSFileOffset offset);

context :

whence :

offset :

Returns :

GnomeVFSSniffBufferReadCall ()

GnomeVFSResult (*GnomeVFSSniffBufferReadCall)
                                            (gpointer context,
                                             gpointer buffer,
                                             GnomeVFSFileSize bytes,
                                             GnomeVFSFileSize *bytes_read);

context :

buffer :

bytes :

bytes_read :

Returns :

gnome_vfs_mime_clear_magic_table ()

void        gnome_vfs_mime_clear_magic_table
                                            (void);

gnome_vfs_mime_sniff_buffer_new_from_handle ()

GnomeVFSMimeSniffBuffer* gnome_vfs_mime_sniff_buffer_new_from_handle
                                            (GnomeVFSHandle *file);

file :

Returns :

gnome_vfs_mime_sniff_buffer_new_from_memory ()

GnomeVFSMimeSniffBuffer* gnome_vfs_mime_sniff_buffer_new_from_memory
                                            (const guchar *buffer,
                                             gssize buffer_size);

buffer :

buffer_size :

Returns :

gnome_vfs_mime_sniff_buffer_new_from_existing_data ()

GnomeVFSMimeSniffBuffer* gnome_vfs_mime_sniff_buffer_new_from_existing_data
                                            (const guchar *buffer,
                                             gssize buffer_size);

buffer :

buffer_size :

Returns :

gnome_vfs_mime_sniff_buffer_new_generic ()

GnomeVFSMimeSniffBuffer* gnome_vfs_mime_sniff_buffer_new_generic
                                            (GnomeVFSSniffBufferSeekCall seek_callback,
                                             GnomeVFSSniffBufferReadCall read_callback,
                                             gpointer context);

seek_callback :

read_callback :

context :

Returns :

gnome_vfs_mime_sniff_buffer_free ()

void        gnome_vfs_mime_sniff_buffer_free
                                            (GnomeVFSMimeSniffBuffer *buffer);

buffer :

gnome_vfs_mime_sniff_buffer_get ()

GnomeVFSResult gnome_vfs_mime_sniff_buffer_get
                                            (GnomeVFSMimeSniffBuffer *buffer,
                                             gssize size);

buffer :

size :

Returns :

gnome_vfs_get_mime_type_for_buffer ()

const char* gnome_vfs_get_mime_type_for_buffer
                                            (GnomeVFSMimeSniffBuffer *buffer);

This routine uses a magic database to guess the mime type of the data represented by buffer.

buffer :

a sniff buffer referencing either a file or data in memory

Returns :

a pointer to an internal copy of the mime-type for buffer.

gnome_vfs_sniff_buffer_looks_like_text ()

gboolean    gnome_vfs_sniff_buffer_looks_like_text
                                            (GnomeVFSMimeSniffBuffer *buffer);

buffer :

Returns :

gnome_vfs_sniff_buffer_looks_like_mp3 ()

gboolean    gnome_vfs_sniff_buffer_looks_like_mp3
                                            (GnomeVFSMimeSniffBuffer *buffer);

buffer :

Returns :

gnome_vfs_sniff_buffer_looks_like_gzip ()

gboolean    gnome_vfs_sniff_buffer_looks_like_gzip
                                            (GnomeVFSMimeSniffBuffer *sniff_buffer,
                                             const char *file_name);

sniff_buffer :

file_name :

Returns :

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