//! This function goes to a position in file list FLAT
//!
//! @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_flat_goto( uint16_t u16_newpos )
{
if (u16_newpos < (nav_flat_get()/2))
{
// Restart at the beginning of list to accelerate the search
if (!nav_flat_reset())
return false;
}
if (!nav_flat_validpos())
{
// Go to first position
if (!nav_flat_next())
return false; // Empty list
}
while(u16_newpos < nav_flat_get())
{
if( !nav_flat_previous())
return false; // Position error
}
while(u16_newpos > nav_flat_get())
{
if( !nav_flat_next())
return false; // End of the list, then the position is bad
}
return true;
}
//! This function searches a file name in file list FLAT
//!
//! @param sz_name name to search (UNICODE or ASCII) <br>
//! It must be terminated by 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 file list
//! @endverbatim
//!
bool nav_flat_findname( const FS_STRING sz_name , bool b_match_case )
{
while( 1 )
{
if ( !nav_flat_next() )
return false;
if ( nav_file_name( sz_name , 0 , FS_NAME_CHECK , b_match_case ))
return true;
}
}
//! This function searchs a file name in file list FLAT
//!
//! @param sz_name name to search (UNICODE or ASCII) <br>
//! It must be terminated by 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 file list
//! @endverbatim
//!
Bool nav_flat_findname( const FS_STRING sz_name , Bool b_match_case )
{
while( 1 )
{
if ( !nav_flat_next() )
return FALSE;
if ( nav_file_name( sz_name , 0 , FS_NAME_CHECK , b_match_case ))
return TRUE;
}
}
//! This function goes to the parent directory
//!
//! @return false in case of error, see global value "fs_g_status" for more detail
//! @return true otherwise
//!
//! @verbatim
//! After the selected file is the first entry of the new file list FLAT
//! @endverbatim
//!
bool nav_flat_gotoparent( void )
{
_MEM_TYPE_SLOW_ Fs_index index;
index = nav_getindex();
while( 0 != fs_g_nav.u8_flat_dir_level )
{
fs_g_nav.u8_flat_dir_level--;
nav_dir_gotoparent();
}
if( !nav_dir_gotoparent() )
{
nav_gotoindex( &index );
return false;
}
// Go to at the beginning of FLAT list
fs_g_nav.u8_flat_dir_level = 0;
fs_g_nav.u16_flat_pos_offset = 0;
nav_filelist_reset();
nav_flat_next();
return true;
}
//! This function computes the number of files and directories present in the file list FLAT
//!
//! @return number of files and directories present in the file list FLAT
//!
uint16_t nav_flat_nb( void )
{
uint16_t u16_save_position;
uint16_t u16_number;
// Save current position
u16_save_position = nav_flat_get();
// Reset position
if ( !nav_flat_reset())
return 0;
// Scan all directories
u16_number = 0;
while( nav_flat_next() )
{
u16_number++;
}
// Restore previous position
nav_flat_goto( u16_save_position );
return u16_number;
}
