#ifndef _SCH_IO_MGR_H_ #define _SCH_IO_MGR_H_ /* * This program source code file is part of KiCad, a free EDA CAD application. * * Copyright (C) 2016 CERN * Copyright (C) 2016-2017 KiCad Developers, see CHANGELOG.TXT for contributors. * * @author Wayne Stambaugh * * 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 3 * 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, see . */ #include #include #include #include class SCH_SHEET; class SCH_SCREEN; class SCH_PLUGIN; class KIWAY; class LIB_PART; class PART_LIB; class PROPERTIES; /** * Class SCH_IO_MGR * is a factory which returns an instance of a #SCH_PLUGIN. */ class SCH_IO_MGR { public: /** * A set of file types that the #SCH_IO_MGR knows about, and for which there * has been a plugin written. */ DEFINE_ENUM_VECTOR( SCH_FILE_T, { SCH_LEGACY, ///< Legacy Eeschema file formats prior to s-expression. // SCH_KICAD, ///< The s-expression version of the schematic file formats. SCH_EAGLE, ///< Autodesk Eagle file format // Add your schematic type here. // ALTIUM, // etc. } ) /** * Return a #SCH_PLUGIN which the caller can use to import, export, save, or load * design documents. * * The returned #SCH_PLUGIN, may be reference counted, so please call PluginRelease() * when you are done using the returned #SCH_PLUGIN. It may or may not be code running * from a DLL/DSO. * * @param aFileType is from #SCH_FILE_T and tells which plugin to find. * * @return the plugin corresponding to aFileType or NULL if not found. * Caller owns the returned object, and must call PluginRelease when done using it. */ APIEXPORT static SCH_PLUGIN* FindPlugin( SCH_FILE_T aFileType ); /** * Release a #SCH_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 ReleasePlugin( SCH_PLUGIN* aPlugin ); /** * Return a brief name for a plugin, given aFileType enum. */ static const wxString ShowType( SCH_FILE_T aFileType ); /** * Return the #SCH_FILE_T from the corresponding plugin type name: "kicad", "legacy", etc. */ static SCH_FILE_T EnumFromStr( const wxString& aFileType ); /** * Return the file extension for \a aFileType. * * @param aFileType is the #SCH_FILE_T type. * * @return the file extension for \a aFileType or an empty string if \a aFileType is invalid. */ static const wxString GetFileExtension( SCH_FILE_T aFileType ); /** * Return a plugin type given a footprint library's libPath. */ static SCH_FILE_T GuessPluginTypeFromLibPath( const wxString& aLibPath ); /** * Load the requested #SCH_PLUGIN and if found, calls the SCH_PLUGIN->Load(..) function * on it using the arguments passed to this function. After the SCH_PLUGIN->Load() * function returns, the #SCH_PLUGIN is Released() as part of this call. * * @param aFileType is the #SCH_FILE_T of file to load. * * @param aFileName is the name of the file to load. * * @param aKiway is the #KIWAY object used to access the component libraries loaded * by the project. * * @param aAppendToMe is an existing #SCH_SHEET to append to, use NULL if a new * #SCH_SHEET load is wanted. * * @param aProperties is an associative array that allows the caller to pass additional * tuning parameters to the #SCH_PLUGIN. * * @return the loaded schematic which the caller owns. This is never NULL because * exception thrown if an error occurs. * * @throw IO_ERROR if the #SCH_PLUGIN cannot be found, file cannot be found * or file cannot be loaded. */ static SCH_SHEET* Load( SCH_FILE_T aFileType, const wxString& aFileName, KIWAY* aKiway, SCH_SHEET* aAppendToMe = NULL, const PROPERTIES* aProperties = NULL ); /** * Write either a full aSchematic to a storage file in a format that this * implementation knows about, or it can be used to write a portion of * aSchematic to a special kind of export file. * * @param aFileType is the #SCH_FILE_T of file to save. * * @param aFileName is the name of a file to save to on disk. * * @param aSchematic is the #SCH_SCREEN document (data tree) to save or export to disk. * * @param aKiway is the #KIWAY object used to access the component libraries loaded * by the project. * * @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( SCH_FILE_T aFileType, const wxString& aFileName, SCH_SCREEN* aSchematic, KIWAY* aKiway, const PROPERTIES* aProperties = NULL ); }; /** * Base class that schematic file and library loading and saving plugins should derive from. * Implementations can provide either Load() or Save() functions, or both. * SCH_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. * * 
 *   try
 *   {
 *        SCH_IO_MGR::Load(...);
 *   or
 *        SCH_IO_MGR::Save(...);
 *   }
 *   catch( const IO_ERROR& ioe )
 *   {
 *        // grab text from ioe, show in error window.
 *   }
 *
*/ class SCH_PLUGIN { public: //------------------------------------------------------ /** * Returns a brief hard coded name for this SCH_PLUGIN. */ virtual const wxString GetName() const = 0; /** * Returns the file extension for the #SCH_PLUGIN. */ virtual const wxString GetFileExtension() const = 0; /** * Return the modification hash from the library cache. * * @note This is temporary until the new s-expr file format is implement. The new file * format will embed symbols instead of referencing them from the library. This * function can be removed when the new file format is implemented. * * @return the modification hash of the library cache. */ virtual int GetModifyHash() const = 0; virtual void SaveLibrary( const wxString& aFileName, const PROPERTIES* aProperties = NULL ); /** * Load information from some input file format that this #SCH_PLUGIN implementation * knows about, into either a new #SCH_SHEET or an existing one. This may be used to load an * entire new #SCH_SHEET, 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 aKiway is the #KIWAY object used to access the component libraries loaded * by the project. * * @param aAppendToMe is an existing #SCH_SHEET 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. * * @return the successfully loaded schematic, or the same one as \a aAppendToMe * if \a aAppendToMe was not NULL, and the 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 SCH_SHEET* Load( const wxString& aFileName, KIWAY* aKiway, SCH_SHEET* aAppendToMe = NULL, const PROPERTIES* aProperties = NULL ); /** * Write \a aSchematic to a storage file in a format that this #SCH_PLUGIN implementation * knows about, or it can be used to write a portion of \a aSchematic to a special kind * of export file. * * @param aFileName is the name of a file to save to on disk. * * @param aSchematic is the class #SCH_SCREEN in memory document tree from which to extract * information when writing to \a aFileName. The caller continues to * own the SCHEMATIC, and the plugin should refrain from modifying the * SCHEMATIC if possible. * * @param aKiway is the #KIWAY object used to access the component libraries loaded * by the project. * * @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, SCH_SCREEN* aSchematic, KIWAY* aKiway, const PROPERTIES* aProperties = NULL ); /** * Populate a list of #LIB_PART alias names contained within the library \a aLibraryPath. * * @param aSymbolNameList is an array to populate with the #LIB_PART names associated with * the library. * * @param aLibraryPath is a locator for the "library", usually a directory, file, * or URL containing one or more #LIB_PART objects. * * @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 the library cannot be found, the part library cannot be loaded. */ virtual void EnumerateSymbolLib( wxArrayString& aSymbolNameList, const wxString& aLibraryPath, const PROPERTIES* aProperties = NULL ); /** * Populate a list of #LIB_PART aliases contained within the library \a aLibraryPath. * * @note It is the reponsibility of the caller to delete the returned object from the heap. * Failure to do this will result in memory leaks. * * @param aSymbolList is an array to populate with the #LIB_PART pointers associated with * the library. * * @param aLibraryPath is a locator for the "library", usually a directory, file, * or URL containing one or more #LIB_PART objects. * * @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 the library cannot be found, the part library cannot be loaded. */ virtual void EnumerateSymbolLib( std::vector& aSymbolList, const wxString& aLibraryPath, const PROPERTIES* aProperties = NULL ); /** * Load a #LIB_PART object having \a aPartName from the \a aLibraryPath containing * a library format that this #SCH_PLUGIN knows about. * * @param aLibraryPath is a locator for the "library", usually a directory, file, * or URL containing several symbols. * * @param aPartName is the name of the #LIB_PART 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 part created on the heap if found caller shares it or NULL if not found. * * @throw IO_ERROR if the library cannot be found or read. No exception * is thrown in the case where aAliasName cannot be found. */ virtual LIB_PART* LoadSymbol( const wxString& aLibraryPath, const wxString& aPartName, const PROPERTIES* aProperties = NULL ); /** * Write \a aSymbol to an existing library located at \a aLibraryPath. If a #LIB_PART * by the same name already exists or there are any conflicting alias names, the new * #LIB_PART will silently overwrite any existing aliases and/or part becaue libraries * cannot have duplicate alias names. It is the responsibility of the caller to check * the library for conflicts before saving. * * @param aLibraryPath is a locator for the "library", usually a directory, file, * or URL containing several symbols. * * @param aSymbol is what to store in the library. The library is refreshed and the * caller must update any #LIB_PART pointers that may have changed. * * @param aProperties is an associative array that can be used to tell the * saver how to save the symbol, 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 SaveSymbol( const wxString& aLibraryPath, const LIB_PART* aSymbol, const PROPERTIES* aProperties = NULL ); /** * Delete the entire #LIB_PART associated with \a aAliasName from the library * \a aLibraryPath. * * @param aLibraryPath is a locator for the "library", usually a directory, file, * or URL containing several symbols. * * @param aSymbolName is the name of a #LIB_PART associated with it's root #LIB_PART * object 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 alias or the library or deleting it. */ virtual void DeleteSymbol( const wxString& aLibraryPath, const wxString& aSymbolName, const PROPERTIES* aProperties = NULL ); /** * Create a new empty symbol library at \a aLibraryPath. 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 CreateSymbolLib( const wxString& aLibraryPath, const PROPERTIES* aProperties = NULL ); /** * Delete an existing symbol library and returns true if successful, 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 symbols. * * @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 or false if library did not exist. * * @throw IO_ERROR if there is a problem deleting an existing library. */ virtual bool DeleteSymbolLib( const wxString& aLibraryPath, const PROPERTIES* aProperties = NULL ); /** * Return true if the library at \a aLibraryPath is writable. (Often * system libraries are read only because of where they are installed.) * * @param aLibraryPath is a locator for the "library", usually a directory, file, * or URL containing several symbols. * * @throw IO_ERROR if no library at aLibraryPath exists. */ virtual bool IsSymbolLibWritable( const wxString& aLibraryPath ); /** * Append supported #SCH_PLUGIN options to \a aListToAppenTo along with internationalized * descriptions. Options are typically appended so that a derived SCH_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 Symbol*() functions in all derived * SCH_PLUGINs.) Note that 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_SCH_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 * #SCH_PLUGIN, which has been avoided to date. */ virtual void SymbolLibOptions( PROPERTIES* aListToAppendTo ) const; /** * Return true if the first line in @a aFileName begins with the expected header. * * @param aFileName is the name of the file to use as input * */ virtual bool CheckHeader( const wxString& aFileName ); /** * Return an error string to the caller. * * This is useful for schematic loaders that can load partial schematics where throwing * an exception would be problematic such as the KiCad legacy plugin. * * @return an unformatted string containing errors if any. */ virtual const wxString& GetError() const; //----------------------------------------------------- /* The compiler writes the "zero argument" constructor for a SCH_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 SCH_IO_MGR uses. Parameters may be passed into a SCH_PLUGIN via the PROPERTIES variable for any of the public API functions which take one. */ virtual ~SCH_PLUGIN() { } /** * Helper object to release a #SCH_PLUGIN in the context of a potential thrown exception * through its destructor. */ class SCH_PLUGIN_RELEASER { SCH_PLUGIN* plugin; // private assignment operator so it's illegal SCH_PLUGIN_RELEASER& operator=( SCH_PLUGIN_RELEASER& aOther ) { return *this; } // private copy constructor so it's illegal SCH_PLUGIN_RELEASER( const SCH_PLUGIN_RELEASER& aOther ) {} public: SCH_PLUGIN_RELEASER( SCH_PLUGIN* aPlugin = NULL ) : plugin( aPlugin ) { } ~SCH_PLUGIN_RELEASER() { if( plugin ) release(); } void release() { SCH_IO_MGR::ReleasePlugin( plugin ); plugin = NULL; } void set( SCH_PLUGIN* aPlugin ) { if( plugin ) release(); plugin = aPlugin; } operator SCH_PLUGIN* () const { return plugin; } SCH_PLUGIN* operator -> () const { return plugin; } }; }; #endif // _SCH_IO_MGR_H_