//! This function goes to a position in filtered file list
//!
//! @param u16_newpos new position to select (0 is the first position)
//!
//! @return false in case of error, see global value "fs_g_status" for more detail
//! @return true otherwise
//!
bool nav_filterlist_goto( uint16_t u16_newpos )
{
if (u16_newpos == FS_NO_SEL)
return nav_filterlist_reset();
if( u16_newpos < (fs_g_nav.u16_pos_filterlist/2) )
{
// Restart at the beginning of list to accelerate search
if( !nav_filterlist_reset() )
return false;
}
if( FS_NO_SEL == fs_g_nav.u16_pos_filterlist )
if( !nav_filterlist_next() )
return false; // No file available
while( u16_newpos > fs_g_nav.u16_pos_filterlist )
{
if( !nav_filterlist_next() )
break;
}
while( u16_newpos < fs_g_nav.u16_pos_filterlist )
{
if( !nav_filterlist_previous() )
break;
}
return (u16_newpos == fs_g_nav.u16_pos_filterlist);
}
//! This function goes to the next position in the filtered file list
//!
//! @return false in case of error, see global value "fs_g_status" for more detail
//! @return true otherwise
//!
bool nav_filterflat_next( void )
{
uint16_t u16_save_current_pos;
u16_save_current_pos = nav_filterlist_get();
if( nav_file_isdir() )
{
// The current file is a dir then enter in this
if( !nav_dir_cd() )
return false;
if( nav_filterlist_next() )
{
// File present in this dir then valid the new position
fs_g_nav.u8_flat_dir_level++;
fs_g_nav.u16_flat_pos_offset += u16_save_current_pos+1;
return true;
}else{
// No file then return in parent dir
if( !nav_filterlist_gotoparent() )
return false;
}
}
// Find next file in current dir or parent dir
while( !nav_filterlist_next() )
{
// End of current directory then goes to parent
if( 0 == fs_g_nav.u8_flat_dir_level )
return false; // End of list FLAT
if( !nav_filterlist_gotoparent() )
return false;
fs_g_nav.u8_flat_dir_level--;
}
fs_g_nav.u16_flat_pos_offset = (fs_g_nav.u16_flat_pos_offset +u16_save_current_pos +1) -nav_filterlist_get();
return true;
}
//! This function selects a file in the navigator via a file index
//!
//! @param index structure with information about file to select (disk, partition, dir, file/dir selected )
//!
//! @return false in case of error, see global value "fs_g_status" for more detail
//! @return true otherwise
//!
//! @verbatim
//! This routine allow to reinit a navigator quickly via a file index (disk, partition, dir, file/dir selected )
//! To get a file index, you shall used the routine nav_getindex().
//! @endverbatim
//!
bool nav_filterlist_gotoindex( const Fs_index _MEM_TYPE_SLOW_ *index )
{
if( !nav_drive_set( index->u8_lun ))
return false;
#if (FS_MULTI_PARTITION == true)
if( !nav_partition_set(index->u8_partition))
return false;
#endif
if( !nav_partition_mount())
return false;
// Initialization of the current entry file with index information
fs_g_nav.u32_cluster_sel_dir = index->u32_cluster_sel_dir;
// Reset position
if ( !nav_filterlist_reset() )
return false;
// Research the index in directory
while( fs_g_nav_fast.u16_entry_pos_sel_file != index->u16_entry_pos_sel_file )
{
if( !nav_filterlist_next() )
{
nav_filterlist_reset();
return false;
}
}
return true;
}
//! This function goes to at the parent directory
//!
//! @return false in case of error, see global value "fs_g_status" for more detail
//! @return true otherwise
//!
//! @verbatim
//! After, the filtered file list changes and contains the files and directories of the new directory.
//! By default, the file selected in filtered file list is the previous (children) directory.
//! @endverbatim
//!
bool nav_filterlist_gotoparent( void )
{
uint32_t u32_cluster_old_dir;
if (!fat_check_mount_noopen())
return false;
if (0 == fs_g_nav.u32_cluster_sel_dir)
{
fs_g_status = FS_ERR_IS_ROOT; // There aren't parent
return false;
}
// Select and read information about directory ".."
fs_g_nav_fast.u16_entry_pos_sel_file = 1;
if ( !fat_read_dir())
return false;
fat_get_entry_info();
// Save the children directory cluster
u32_cluster_old_dir = fs_g_nav.u32_cluster_sel_dir;
// Select the parent directory via information present in the current directory ".."
fs_g_nav.u32_cluster_sel_dir = fs_g_nav_entry.u32_cluster;
// Select the children directory in new directory (=parent directory)
if( false == nav_filterlist_reset())
return false;
while( nav_filterlist_next() )
{
if (fs_g_nav_entry.u32_cluster == u32_cluster_old_dir)
return true; // It is the children directory
}
fs_g_status = FS_ERR_FS;
return false;
}
//! This function searches a file name in file list filtered
//!
//! @param sz_name name to search (UNICODE or ASCII) <br>
//! The name must end with NULL or '*' value
//! @param b_match_case false to ignore the case
//!
//! @return false in case of error, see global value "fs_g_status" for more detail
//! @return true otherwise
//!
//! @verbatim
//! This function starts a search at the next position of the current in filtered file list
//! @endverbatim
//!
bool nav_filterlist_findname( const FS_STRING sz_name , bool b_match_case )
{
while( 1 )
{
if ( !nav_filterlist_next())
return false;
if ( nav_file_name( sz_name , 0 , FS_NAME_CHECK , b_match_case ))
return true;
}
}
//! This function goes to the previous position in filtered file list
//!
//! @return false in case of error, see global value "fs_g_status" for more detail
//! @return true otherwise
//!
bool nav_filterflat_previous( void )
{
uint16_t u16_save_current_pos;
u16_save_current_pos = nav_filterlist_get();
if( nav_filterlist_previous() )
{
while( 1 )
{
if( !nav_file_isdir() )
{
fs_g_nav.u16_flat_pos_offset = ((fs_g_nav.u16_flat_pos_offset +u16_save_current_pos) -nav_filterlist_get()) -1;
return true; // New position valid
}
// The file is a dir then enter in this
if( !nav_dir_cd() )
return false;
if( !nav_filterlist_next() )
{
// Dir empty then goes to parent and dir is the new selection
nav_filterlist_gotoparent();
fs_g_nav.u16_flat_pos_offset = ((fs_g_nav.u16_flat_pos_offset +u16_save_current_pos) -nav_filterlist_get()) -1;
return true;
}
fs_g_nav.u8_flat_dir_level++;
// Go to end of the dir
while( nav_filterlist_next() );
}
}
// Beginning of current directory then goes to parent
if( 0 == fs_g_nav.u8_flat_dir_level )
return false; // beginning of list FLAT
if( !nav_filterlist_gotoparent() )
return false;
fs_g_nav.u8_flat_dir_level--;
fs_g_nav.u16_flat_pos_offset -= (nav_filterlist_get()+1);
return true;
}
