/**
* append_file_ext:
*
* Append a file extension, if not already present.
*
* Returns: a newly allocated string
*/
gchar *append_file_ext ( const gchar *filename, VikLoadType_t type )
{
gchar *new_name = NULL;
const gchar *ext = NULL;
/* Select an extension */
switch (type)
{
case FILE_TYPE_GPX:
ext = ".gpx";
break;
case FILE_TYPE_KML:
ext = ".kml";
break;
case FILE_TYPE_GPSMAPPER:
case FILE_TYPE_GPSPOINT:
default:
/* Do nothing, ext already set to NULL */
break;
}
/* Do */
if ( ext != NULL && ! a_file_check_ext ( filename, ext ) )
new_name = g_strconcat ( filename, ext, NULL );
else
/* Simply duplicate */
new_name = g_strdup ( filename );
return new_name;
}
/**
* a_jpg_magic_check:
* @filename: The file
*
* Returns: Whether the file is a JPG.
* Uses Magic library if available to determine the jpgness.
* Otherwise uses a rudimentary extension name check.
*/
gboolean a_jpg_magic_check ( const gchar *filename )
{
gboolean is_jpg = FALSE;
#ifdef HAVE_MAGIC_H
magic_t myt = magic_open ( MAGIC_CONTINUE|MAGIC_ERROR|MAGIC_MIME );
if ( myt ) {
#ifdef WINDOWS
// We have to 'package' the magic database ourselves :(
// --> %PROGRAM FILES%\Viking\magic.mgc
magic_load ( myt, "magic.mgc" );
#else
// Use system default
magic_load ( myt, NULL );
#endif
const char* magic = magic_file (myt, filename);
g_debug ( "%s:%s", __FUNCTION__, magic );
if ( g_ascii_strncasecmp (magic, "image/jpeg", 10) == 0 )
is_jpg = TRUE;
magic_close ( myt );
}
else
#endif
is_jpg = a_file_check_ext ( filename, ".jpg" );
return is_jpg;
}
VikLoadType_t a_file_load ( VikAggregateLayer *top, VikViewport *vp, const gchar *filename_or_uri )
{
g_return_val_if_fail ( vp != NULL, LOAD_TYPE_READ_FAILURE );
char *filename = (char *)filename_or_uri;
if (strncmp(filename, "file://", 7) == 0) {
// Consider replacing this with:
// filename = g_filename_from_uri ( entry, NULL, NULL );
// Since this doesn't support URIs properly (i.e. will failure if is it has %20 characters in it)
filename = filename + 7;
g_debug ( "Loading file %s from URI %s", filename, filename_or_uri );
}
FILE *f = xfopen ( filename );
if ( ! f )
return LOAD_TYPE_READ_FAILURE;
VikLoadType_t load_answer = LOAD_TYPE_OTHER_SUCCESS;
gchar *dirpath = g_path_get_dirname ( filename );
// Attempt loading the primary file type first - our internal .vik file:
if ( check_magic ( f, VIK_MAGIC ) )
{
if ( file_read ( top, f, dirpath, vp ) )
load_answer = LOAD_TYPE_VIK_SUCCESS;
else
load_answer = LOAD_TYPE_VIK_FAILURE_NON_FATAL;
}
else if ( a_jpg_magic_check ( filename ) ) {
if ( ! a_jpg_load_file ( top, filename, vp ) )
load_answer = LOAD_TYPE_UNSUPPORTED_FAILURE;
}
else
{
// For all other file types which consist of tracks, routes and/or waypoints,
// must be loaded into a new TrackWaypoint layer (hence it be created)
gboolean success = TRUE; // Detect load failures - mainly to remove the layer created as it's not required
VikLayer *vtl = vik_layer_create ( VIK_LAYER_TRW, vp, FALSE );
vik_layer_rename ( vtl, a_file_basename ( filename ) );
// In fact both kml & gpx files start the same as they are in xml
if ( a_file_check_ext ( filename, ".kml" ) && check_magic ( f, GPX_MAGIC ) ) {
// Implicit Conversion
if ( ! ( success = a_babel_convert_from ( VIK_TRW_LAYER(vtl), "-i kml", filename, NULL, NULL, NULL ) ) ) {
load_answer = LOAD_TYPE_GPSBABEL_FAILURE;
}
}
// NB use a extension check first, as a GPX file header may have a Byte Order Mark (BOM) in it
// - which currently confuses our check_magic function
else if ( a_file_check_ext ( filename, ".gpx" ) || check_magic ( f, GPX_MAGIC ) ) {
if ( ! ( success = a_gpx_read_file ( VIK_TRW_LAYER(vtl), f ) ) ) {
load_answer = LOAD_TYPE_GPX_FAILURE;
}
}
else {
// Try final supported file type
if ( ! ( success = a_gpspoint_read_file ( VIK_TRW_LAYER(vtl), f, dirpath ) ) ) {
// Failure here means we don't know how to handle the file
load_answer = LOAD_TYPE_UNSUPPORTED_FAILURE;
}
}
g_free ( dirpath );
// Clean up when we can't handle the file
if ( ! success ) {
// free up layer
g_object_unref ( vtl );
}
else {
// Complete the setup from the successful load
vik_layer_post_read ( vtl, vp, TRUE );
vik_aggregate_layer_add_layer ( top, vtl, FALSE );
vik_trw_layer_auto_set_view ( VIK_TRW_LAYER(vtl), vp );
}
}
xfclose(f);
return load_answer;
}
