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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) 2016-2017 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>
class BOARD;
class PLUGIN;
class MODULE;
class PROPERTIES;
/**
* Class IO_MGR
* is a factory which returns an instance of a PLUGIN.
*/
class IO_MGR
{
public:
/**
* Enum PCB_FILE_T
* is a 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,
GEDA_PCB, ///< Geda PCB file formats.
GITHUB, ///< Read only http://github.com repo holding pretty footprints
// add your type here.
// ALTIUM,
// etc.
FILE_TYPE_NONE
};
/**
* Class PLUGIN_REGISTRY
* Holds 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;
};
/**
* Class REGISTER_PLUGIN
* Registers 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 );
}
};
/**
* Function PluginFind
* returns 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.
*
* @param aFileType is from PCB_FILE_T and tells which plugin to find.
*
* @return PLUGIN* - the plugin corresponding to aFileType or NULL if not found.
* Caller owns the returned object, and must call PluginRelease when done using it.
*/
static PLUGIN* PluginFind( PCB_FILE_T aFileType );
/**
* Function PluginRelease
* releases 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 );
/**
* Function ShowType
* returns a brief name for a plugin, given aFileType enum.
*/
static const wxString ShowType( PCB_FILE_T aFileType );
/**
* Function EnumFromStr
* returns the PCB_FILE_T from the corresponding plugin type name: "kicad", "legacy", etc.
*/
static PCB_FILE_T EnumFromStr( const wxString& aFileType );
/**
* Function GetFileExtension
* returns the file extension for \a aFileType.
*
* @param aFileType The #PCB_FILE_T type.
* @return A wxString object containing the file extension for \a aFileType or an empty
* string if \a aFileType is invalid.
*/
static const wxString GetFileExtension( PCB_FILE_T aFileType );
/**
* Function GuessPluginTypeFromLibPath
* returns a plugin type given a footprint library's libPath.
*/
static PCB_FILE_T GuessPluginTypeFromLibPath( const wxString& aLibPath );
/**
* Function Load
* finds the requested PLUGIN and if found, calls the PLUGIN->Load(..) funtion
* 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.
*
* @return BOARD* - caller owns it, 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 = NULL, const PROPERTIES* aProperties = NULL );
/**
* Function Save
* will write either a full aBoard to a storage file in a format that this
* implementation knows about, or it can be used to write a portion of
* 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 = NULL );
};
/**
* Class PLUGIN
* is 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.
*
* <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:
//-----<PUBLIC PLUGIN API>-------------------------------------------------
/**
* Function PluginName
* returns a brief hard coded name for this PLUGIN.
*/
virtual const wxString PluginName() const = 0;
/**
* Function GetFileExtension
* returns the file extension for the PLUGIN.
*/
virtual const wxString GetFileExtension() const = 0;
/**
* Function Load
* loads 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.
*
* @return BOARD* - the successfully loaded board, or the same one as 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 = NULL );
/**
* Function Save
* will 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
* 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 = NULL );
//-----<Footprint Stuff>-----------------------------
/**
* 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.
*
* @throw IO_ERROR if the library cannot be found, or footprint cannot be loaded.
*/
virtual void FootprintEnumerate( wxArrayString& aFootprintNames, const wxString& aLibraryPath,
const PROPERTIES* aProperties = NULL );
/**
* Return the footprint lib last-mod-time, if available.
*/
virtual wxDateTime GetLibModificationTime( const wxString& aLibraryPath ) const
{
// Default implementation.
return wxDateTime::Now(); // If we don't know then we must assume the worst.
}
/**
* Function PrefetchLib
* 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 = NULL );
/**
* Function FootprintLoad
* loads 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 MODULE* - 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 aFootprintName cannot be found.
*/
virtual MODULE* FootprintLoad( const wxString& aLibraryPath, const wxString& aFootprintName,
const PROPERTIES* aProperties = NULL );
/**
* Function FootprintSave
* will write @a aModule 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 MODULE* aFootprint,
const PROPERTIES* aProperties = NULL );
/**
* Function FootprintDelete
* deletes @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 = NULL );
/**
* Function FootprintLibCreate
* creates 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 = NULL );
/**
* Function FootprintLibDelete
* deletes 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 bool - 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 = NULL );
/**
* Function IsFootprintLibWritable
* returns true iff 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 footprints.
*
* @throw IO_ERROR if no library at aLibraryPath exists.
*/
virtual bool IsFootprintLibWritable( const wxString& aLibraryPath );
/**
* Function FootprintLibOptions
* appends 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 that 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;
//-----</PUBLIC PLUGIN API>------------------------------------------------
/* 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.
*/
virtual ~PLUGIN()
{
//printf( "~%s", __func__ );
};
#ifndef SWIG
/**
* Class RELEASER
* 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 ) {}
public:
RELEASER( PLUGIN* aPlugin = NULL ) :
plugin( aPlugin )
{
}
~RELEASER()
{
if( plugin )
release();
}
void release()
{
IO_MGR::PluginRelease( plugin );
plugin = NULL;
}
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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