#ifndef IO_MGR_H_ #define IO_MGR_H_ /* * This program source code file is part of KICAD, a free EDA CAD application. * * Copyright (C) 2011-2012 SoftPLC Corporation, Dick Hollenbeck * Copyright (C) 2016-2020 Kicad Developers, see AUTHORS.txt for contributors. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, you may find one here: * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html * or you may search the http://www.gnu.org website for the version 2 license, * or you may write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */ #include #include #include #include #include class BOARD; class PLUGIN; class FOOTPRINT; class PROPERTIES; class PROJECT; /** * A factory which returns an instance of a #PLUGIN. */ class IO_MGR { public: /** * The set of file types that the IO_MGR knows about, and for which there has been a * plugin written. */ enum PCB_FILE_T { LEGACY, ///< Legacy Pcbnew file formats prior to s-expression. KICAD_SEXP, ///< S-expression Pcbnew file format. EAGLE, PCAD, ALTIUM_DESIGNER, ALTIUM_CIRCUIT_STUDIO, ALTIUM_CIRCUIT_MAKER, CADSTAR_PCB_ARCHIVE, GEDA_PCB, ///< Geda PCB file formats. // add your type here. // etc. FILE_TYPE_NONE }; /** * Hold a list of available plugins, created using a singleton REGISTER_PLUGIN object. * This way, plugins can be added link-time. */ class PLUGIN_REGISTRY { public: struct ENTRY { PCB_FILE_T m_type; std::function m_createFunc; wxString m_name; }; static PLUGIN_REGISTRY *Instance() { static PLUGIN_REGISTRY *self = nullptr; if( !self ) { self = new PLUGIN_REGISTRY; } return self; } void Register( PCB_FILE_T aType, const wxString& aName, std::function aCreateFunc ) { ENTRY ent; ent.m_type = aType; ent.m_createFunc = aCreateFunc; ent.m_name = aName; m_plugins.push_back( ent ); } PLUGIN* Create( PCB_FILE_T aFileType ) const { for( auto& ent : m_plugins ) { if ( ent.m_type == aFileType ) { return ent.m_createFunc(); } } return nullptr; } const std::vector& AllPlugins() const { return m_plugins; } private: std::vector m_plugins; }; /** * Register a plugin. * * Declare as a static variable in an anonymous namespace. * * @param aType type of the plugin * @param aName name of the file format * @param aCreateFunc function that creates a new object for the plugin. */ struct REGISTER_PLUGIN { REGISTER_PLUGIN( PCB_FILE_T aType, const wxString& aName, std::function aCreateFunc ) { PLUGIN_REGISTRY::Instance()->Register( aType, aName, aCreateFunc ); } }; /** * Return a #PLUGIN which the caller can use to import, export, save, or load * design documents. * * The returned #PLUGIN, may be reference counted, so please call PluginRelease() when you * are done using the returned #PLUGIN. It may or may not be code running from a DLL/DSO. * * @note The caller owns the returned object and must call PluginRelease when done using it. * * @param aFileType is from #PCB_FILE_T and tells which plugin to find. * @return the plug in corresponding to \a aFileType or NULL if not found. */ static PLUGIN* PluginFind( PCB_FILE_T aFileType ); /** * Release a #PLUGIN back to the system and may cause it to be unloaded from memory. * * @param aPlugin is the one to be released, and which is no longer usable * after calling this. */ static void PluginRelease( PLUGIN* aPlugin ); /** * Return a brief name for a plugin given \a aFileType enum. */ static const wxString ShowType( PCB_FILE_T aFileType ); /** * Return the #PCB_FILE_T from the corresponding plugin type name: "kicad", "legacy", etc. */ static PCB_FILE_T EnumFromStr( const wxString& aFileType ); /** * Return the file extension for \a aFileType. * * @param aFileType The #PCB_FILE_T type. * @return the file extension for \a aFileType or an empty string if \a aFileType is invalid. */ static const wxString GetFileExtension( PCB_FILE_T aFileType ); /** * Return a plugin type given a footprint library's libPath. */ static PCB_FILE_T GuessPluginTypeFromLibPath( const wxString& aLibPath ); /** * Find the requested #PLUGIN and if found, calls the #PLUGIN::Load() function * on it using the arguments passed to this function. After the #PLUGIN::Load() * function returns, the #PLUGIN is Released() as part of this call. * * @param aFileType is the #PCB_FILE_T of file to load. * @param aFileName is the name of the file to load. * @param aAppendToMe is an existing BOARD to append to, use NULL if fresh * board load is wanted. * @param aProperties is an associative array that allows the caller to * pass additional tuning parameters to the PLUGIN. * @param aProject is the optional #PROJECT object primarily used by third party * importers. * @return the loaded #BOARD object. The caller owns it an it will never NULL because * exception thrown if error. * * @throw IO_ERROR if the #PLUGIN cannot be found, file cannot be found, or file cannot * be loaded. */ static BOARD* Load( PCB_FILE_T aFileType, const wxString& aFileName, BOARD* aAppendToMe = nullptr, const PROPERTIES* aProperties = nullptr, PROJECT* aProject = nullptr ); /** * Write either a full \a aBoard to a storage file in a format that this implementation * knows about, or it can be used to write a portion of\a aBoard to a special kind of * export file. * * @param aFileType is the #PCB_FILE_T of file to save. * @param aFileName is the name of a file to save to on disk. * @param aBoard is the #BOARD document (data tree) to save or export to disk. * @param aBoard is the in memory document tree from which to extract information when * writing to \a aFileName. The caller continues to own the #BOARD, and * the plugin should refrain from modifying the #BOARD if possible. * @param aProperties is an associative array that can be used to tell the saver how to * save the file, because it can take any number of additional named * tuning arguments that the plugin is known to support. The caller * continues to own this object (plugin may not delete it), and plugins * should expect it to be optionally NULL. * * @throw IO_ERROR if there is a problem saving or exporting. */ static void Save( PCB_FILE_T aFileType, const wxString& aFileName, BOARD* aBoard, const PROPERTIES* aProperties = nullptr ); }; /** * A base class that #BOARD loading and saving plugins should derive from. * * Implementations can provide either Load() or Save() functions, or both. PLUGINs throw * exceptions, so it is best that you wrap your calls to these functions in a try catch block. * Plugins throw exceptions because it is illegal for them to have any user interface calls in * them whatsoever, i.e. no windowing or screen printing at all. * *The compiler writes the "zero argument" constructor for a PLUGIN automatically if you do * not provide one. If you decide you need to provide a zero argument constructor of your * own design, that is allowed. It must be public, and it is what the #IO_MGR uses. Parameters * may be passed into a PLUGIN via the #PROPERTIES variable for any of the public API functions * which take one. * * * 
 *   try
 *   {
 *        IO_MGR::Load(...);
 *   or
 *        IO_MGR::Save(...);
 *   }
 *   catch( const IO_ERROR& ioe )
 *   {
 *        // grab text from ioe, show in error window.
 *   }
 *
*/ class PLUGIN { public: /** * Return a brief hard coded name for this PLUGIN. */ virtual const wxString PluginName() const = 0; /** * Returns the file extension for the PLUGIN. */ virtual const wxString GetFileExtension() const = 0; /** * Load information from some input file format that this PLUGIN implementation * knows about into either a new #BOARD or an existing one. * * This may be used to load an entire new #BOARD, or to augment an existing one if * @a aAppendToMe is not NULL. * * @param aFileName is the name of the file to use as input and may be foreign in * nature or native in nature. * @param aAppendToMe is an existing BOARD to append to, but if NULL then this means * "do not append, rather load anew". * @param aProperties is an associative array that can be used to tell the loader how to * load the file, because it can take any number of additional named * arguments that the plugin is known to support. These are tuning * parameters for the import or load. The caller continues to own * this object (plugin may not delete it), and plugins should expect * it to be optionally NULL. * @param aProject is the optional #PROJECT object primarily used by third party * importers. * @return the successfully loaded board, or the same one as \a aAppendToMe if aAppendToMe * was not NULL, and caller owns it. * * @throw IO_ERROR if there is a problem loading, and its contents should say what went * wrong, using line number and character offsets of the input file if * possible. */ virtual BOARD* Load( const wxString& aFileName, BOARD* aAppendToMe, const PROPERTIES* aProperties = nullptr, PROJECT* aProject = nullptr ); /** * Write @a aBoard to a storage file in a format that this PLUGIN implementation knows * about or it can be used to write a portion of \a aBoard to a special kind of export * file. * * @param aFileName is the name of a file to save to on disk. * @param aBoard is the class #BOARD in memory document tree from which to extract * information when writing to \a aFileName. The caller continues to * own the BOARD, and the plugin should refrain from modifying the BOARD * if possible. * @param aProperties is an associative array that can be used to tell the saver how to * save the file, because it can take any number of additional named * tuning arguments that the plugin is known to support. The caller * continues to own this object (plugin may not delete it) and plugins * should expect it to be optionally NULL. * * @throw IO_ERROR if there is a problem saving or exporting. */ virtual void Save( const wxString& aFileName, BOARD* aBoard, const PROPERTIES* aProperties = nullptr ); /** * Return a list of footprint names contained within the library at @a aLibraryPath. * * @param aLibraryPath is a locator for the "library", usually a directory, file, * or URL containing several footprints. * @param aProperties is an associative array that can be used to tell the plugin * anything needed about how to perform with respect to @a aLibraryPath. * The caller continues to own this object (plugin may not delete it), * and plugins should expect it to be optionally NULL. * @param aFootprintNames is the array of available footprint names inside a library. * @param aBestEfforts if true, don't throw on errors, just return an empty list. * * @throw IO_ERROR if the library cannot be found, or footprint cannot be loaded. */ virtual void FootprintEnumerate( wxArrayString& aFootprintNames, const wxString& aLibraryPath, bool aBestEfforts, const PROPERTIES* aProperties = nullptr ); /** * Generate a timestamp representing all the files in the library (including the library * directory). * * Timestamps should not be considered ordered, they either match or they don't. */ virtual long long GetLibraryTimestamp( const wxString& aLibraryPath ) const = 0; /** * If possible, prefetches the specified library (e.g. performing downloads). Does not parse. * Threadsafe. * * This is a no-op for libraries that cannot be prefetched. Plugins that cannot prefetch * need not override this; a default no-op is provided. * * @param aLibraryPath is a locator for the "library", usually a directory, file, or URL * containing several footprints. * * @param aProperties is an associative array that can be used to tell the plugin anything * needed about how to perform with respect to @a aLibraryPath. The * caller continues to own this object (plugin may not delete it), and * plugins should expect it to be optionally NULL. * * @throw IO_ERROR if there is an error prefetching the library. */ virtual void PrefetchLib( const wxString& aLibraryPath, const PROPERTIES* aProperties = nullptr ); /** * Load a footprint having @a aFootprintName from the @a aLibraryPath containing a library * format that this PLUGIN knows about. * * @param aLibraryPath is a locator for the "library", usually a directory, file, or URL * containing several footprints. * @param aFootprintName is the name of the footprint to load. * @param aProperties is an associative array that can be used to tell the loader * implementation to do something special, because it can take * any number of additional named tuning arguments that the plugin * is known to support. The caller continues to own this object * (plugin may not delete it), and plugins should expect it to be * optionally NULL. * @return the #FOOTPRINT object if found caller owns it, else NULL if not found. * * @throw IO_ERROR if the library cannot be found or read. No exception is thrown in * the case where \a aFootprintName cannot be found. */ virtual FOOTPRINT* FootprintLoad( const wxString& aLibraryPath, const wxString& aFootprintName, const PROPERTIES* aProperties = nullptr ); /** * A version of FootprintLoad() for use after FootprintEnumerate() for more efficient * cache management. */ virtual const FOOTPRINT* GetEnumeratedFootprint( const wxString& aLibraryPath, const wxString& aFootprintName, const PROPERTIES* aProperties = nullptr ); /** * Check for the existence of a footprint. */ virtual bool FootprintExists( const wxString& aLibraryPath, const wxString& aFootprintName, const PROPERTIES* aProperties = nullptr ); /** * Write @a aFootprint to an existing library located at @a aLibraryPath. * If a footprint by the same name already exists, it is replaced. * * @param aLibraryPath is a locator for the "library", usually a directory, file, or URL * containing several footprints. * @param aFootprint is what to store in the library. The caller continues to own the * footprint after this call. * @param aProperties is an associative array that can be used to tell the saver how to * save the footprint, because it can take any number of additional * named tuning arguments that the plugin is known to support. The * caller continues to own this object (plugin may not delete it), and * plugins should expect it to be optionally NULL. * * @throw IO_ERROR if there is a problem saving. */ virtual void FootprintSave( const wxString& aLibraryPath, const FOOTPRINT* aFootprint, const PROPERTIES* aProperties = nullptr ); /** * Delete @a aFootprintName from the library at @a aLibraryPath. * * @param aLibraryPath is a locator for the "library", usually a directory, file, or URL * containing several footprints. * @param aFootprintName is the name of a footprint to delete from the specified library. * @param aProperties is an associative array that can be used to tell the library delete * function anything special, because it can take any number of additional * named tuning arguments that the plugin is known to support. The caller * continues to own this object (plugin may not delete it), and plugins * should expect it to be optionally NULL. * * @throw IO_ERROR if there is a problem finding the footprint or the library, or deleting it. */ virtual void FootprintDelete( const wxString& aLibraryPath, const wxString& aFootprintName, const PROPERTIES* aProperties = nullptr ); /** * Create a new empty footprint library at @a aLibraryPath empty. * * It is an error to attempt to create an existing library or to attempt to create * on a "read only" location. * * @param aLibraryPath is a locator for the "library", usually a directory, file, or URL * containing several footprints. * @param aProperties is an associative array that can be used to tell the library create * function anything special, because it can take any number of additional * named tuning arguments that the plugin is known to support. The caller * continues to own this object (plugin may not delete it), and plugins * should expect it to be optionally NULL. * * @throw IO_ERROR if there is a problem finding the library, or creating it. */ virtual void FootprintLibCreate( const wxString& aLibraryPath, const PROPERTIES* aProperties = nullptr ); /** * Delete an existing footprint library and returns true, or if library does not * exist returns false, or throws an exception if library exists but is read only or * cannot be deleted for some other reason. * * @param aLibraryPath is a locator for the "library", usually a directory or file which * will contain footprints. * @param aProperties is an associative array that can be used to tell the library delete * implementation function anything special, because it can take any * number of additional named tuning arguments that the plugin is known * to support. The caller continues to own this object (plugin may not * delete it), and plugins should expect it to be optionally NULL. * @return true if library deleted, false if library did not exist. * * @throw IO_ERROR if there is a problem deleting an existing library. */ virtual bool FootprintLibDelete( const wxString& aLibraryPath, const PROPERTIES* aProperties = nullptr ); /** * Return true if the library at @a aLibraryPath is writable. * * The system libraries are typically read only because of where they are installed.. * * @param aLibraryPath is a locator for the "library", usually a directory, file, or URL * containing several footprints. * * @throw IO_ERROR if no library at aLibraryPath exists. */ virtual bool IsFootprintLibWritable( const wxString& aLibraryPath ); /** * Append supported PLUGIN options to @a aListToAppenTo along with internationalized * descriptions. * * Options are typically appended so that a derived #PLUGIN can call its base class * function by the same name first, thus inheriting options declared there. Some base * class options could pertain to all Footprint*() functions in all derived PLUGINs. * * @note Since aListToAppendTo is a #PROPERTIES object, all options will be unique and * last guy wins. * * @param aListToAppendTo holds a tuple of *
*
option
*
This eventually is what shows up into the fp-lib-table "options" * field, possibly combined with others.
*
internationalized description
*
The internationalized description is displayed in DIALOG_FP_PLUGIN_OPTIONS. * It may be multi-line and be quite explanatory of the option.
*
*
* In the future perhaps @a aListToAppendTo evolves to something capable of also * holding a wxValidator for the cells in said dialog: * http://forums.wxwidgets.org/viewtopic.php?t=23277&p=104180. * This would require a 3 column list, and introducing wx GUI knowledge to * PLUGIN, which has been avoided to date. */ virtual void FootprintLibOptions( PROPERTIES* aListToAppendTo ) const; virtual ~PLUGIN() { //printf( "~%s", __func__ ); }; #ifndef SWIG /** * Releases a PLUGIN in the context of a potential thrown exception through its destructor. */ class RELEASER { PLUGIN* plugin; // private assignment operator so it's illegal RELEASER& operator=( RELEASER& aOther ) { return *this; } // private copy constructor so it's illegal RELEASER( const RELEASER& aOther ) : plugin( nullptr ) {} public: RELEASER( PLUGIN* aPlugin = nullptr ) : plugin( aPlugin ) { } ~RELEASER() { if( plugin ) release(); } void release() { IO_MGR::PluginRelease( plugin ); plugin = nullptr; } void set( PLUGIN* aPlugin ) { if( plugin ) release(); plugin = aPlugin; } operator PLUGIN* () const { return plugin; } PLUGIN* operator -> () const { return plugin; } }; #endif }; #endif // IO_MGR_H_