dm_gm_get_file_extension Function

public function dm_gm_get_file_extension(path, extension) result(rc)

Uses GraphicsMagick to read the image file extension (jpg, png, ...). On error, the string file_format is allocated but empty.

The function returns the followin error codes:

• E_NOT_FOUND if image does not exist.
• E_READ if reading dimensions failed.
• E_SYSTEM if execution of GraphicsMagick failed.

Arguments

Type	Intent	Optional	Attributes		Name
character(len=*),	intent(in)			::	path	Image file path.
character(len=:),	intent(out),		allocatable	::	extension	Image file extension.

Return Value integer