This class maintains the set of all known PNMFileTypes in the universe. More...

#include "pnmFileTypeRegistry.h"

Public Member Functions
int	get_num_types () const

PNMFileType *	get_type (int n) const

PNMFileType *	get_type_by_handle (TypeHandle handle) const
	Returns the PNMFileType instance stored in the registry for the given TypeHandle, e.g. More...

PNMFileType *	get_type_from_extension (const std::string &filename) const
	Tries to determine what the PNMFileType is likely to be for a particular image file based on its extension. More...

PNMFileType *	get_type_from_magic_number (const std::string &magic_number) const
	Tries to determine what the PNMFileType is likely to be for a particular image file based on its magic number, the first two bytes read from the file. More...

void	register_type (PNMFileType *type)
	Defines a new PNMFileType in the universe. More...

void	unregister_type (PNMFileType *type)
	Removes a PNMFileType previously passed to register_type. More...

void	write (std::ostream &out, int indent_level=0) const
	Writes a list of supported image file types to the indicated output stream, one per line. More...

Static Public Member Functions
static PNMFileTypeRegistry *	get_global_ptr ()
	Returns a pointer to the global PNMFileTypeRegistry object. More...

Public Attributes
	get_num_types
	Returns the total number of types registered. More...

	get_type
	Returns the nth type registered. More...

Detailed Description

This class maintains the set of all known PNMFileTypes in the universe.

Definition at line 28 of file pnmFileTypeRegistry.h.

Member Function Documentation

◆ get_global_ptr()

PNMFileTypeRegistry * PNMFileTypeRegistry::get_global_ptr ( )

static

Returns a pointer to the global PNMFileTypeRegistry object.

Definition at line 277 of file pnmFileTypeRegistry.cxx.

Referenced by TexturePool::get_texture_type(), init_libpnmimagetypes(), PNMImageHeader::make_writer(), and TexturePool::write_texture_types().

◆ get_type_by_handle()

PNMFileType * PNMFileTypeRegistry::get_type_by_handle ( TypeHandle handle ) const

Returns the PNMFileType instance stored in the registry for the given TypeHandle, e.g.

as retrieved by a previous call to get_type() on the type instance.

Definition at line 233 of file pnmFileTypeRegistry.cxx.

◆ get_type_from_extension()

PNMFileType * PNMFileTypeRegistry::get_type_from_extension ( const std::string & filename ) const

Tries to determine what the PNMFileType is likely to be for a particular image file based on its extension.

Returns a suitable PNMFileType pointer, or NULL if no type can be determined.

Definition at line 147 of file pnmFileTypeRegistry.cxx.

References downcase().

Referenced by TexturePool::get_texture_type(), PNMImageHeader::make_writer(), and TexturePool::write_texture_types().

◆ get_type_from_magic_number()

PNMFileType * PNMFileTypeRegistry::get_type_from_magic_number ( const std::string & magic_number ) const

Tries to determine what the PNMFileType is likely to be for a particular image file based on its magic number, the first two bytes read from the file.

Returns a suitable PNMFileType pointer, or NULL if no type can be determined.

Definition at line 210 of file pnmFileTypeRegistry.cxx.

References PNMFileType::has_magic_number(), and PNMFileType::matches_magic_number().