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kicad/pcbnew/io_mgr.h

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#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 <dick@softplc.com>
* 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 <richio.h>
#include <map>
#include <functional>
#include <wx/time.h>
#include <config.h>
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,
FABMASTER,
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<PLUGIN*(void)> 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<PLUGIN*(void)> 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<ENTRY>& AllPlugins() const
{
return m_plugins;
}
private:
std::vector<ENTRY> 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<PLUGIN*(void)> 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.
*
*
* <pre>
* try
* {
* IO_MGR::Load(...);
* or
* IO_MGR::Save(...);
* }
* catch( const IO_ERROR& ioe )
* {
* // grab text from ioe, show in error window.
* }
* </pre>
*/
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 );
/**
* Return a container with the cached library footprints generated in the last call to
* #Load. This function is intended to be used ONLY by the non-KiCad board importers for the
* purpose of obtaining the footprint library of the design and creating a project-specific
* library.
*
* @return Footprints (caller owns the objects)
*/
virtual std::vector<FOOTPRINT*> GetImportedCachedLibraryFootprints();
/**
* 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
* <dl>
* <dt>option</dt>
* <dd>This eventually is what shows up into the fp-lib-table "options"
* field, possibly combined with others.</dd>
* <dt>internationalized description</dt>
* <dd>The internationalized description is displayed in DIALOG_FP_PLUGIN_OPTIONS.
* It may be multi-line and be quite explanatory of the option.</dd>
* </dl>
* <br>
* 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_
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