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kicad/eeschema/sch_io_mgr.h

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#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) 2016-2021 KiCad Developers, see AUTHORS.txt for contributors.
*
* @author Wayne Stambaugh <stambaughw@gmail.com>
*
* 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 <http://www.gnu.org/licenses/>.
*/
#include <richio.h>
#include <import_export.h>
#include <map>
#include <enum_vector.h>
#include <reporter.h>
class SCH_SHEET;
class SCH_SCREEN;
class SCH_PLUGIN;
class SCHEMATIC;
class SYMBOL_LIB_TABLE;
class KIWAY;
class LIB_SYMBOL;
class SYMBOL_LIB;
class PROPERTIES;
class PROGRESS_REPORTER;
/**
* 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_ALTIUM, ///< Altium file format
SCH_CADSTAR_ARCHIVE, ///< CADSTAR Schematic Archive
SCH_EAGLE, ///< Autodesk Eagle file format
SCH_DATABASE, ///< KiCad database library
// Add your schematic type here.
SCH_FILE_UNKNOWN
} )
/**
* 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 schematic 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 the symbol library file extension (if any) 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 GetLibraryFileExtension( SCH_FILE_T aFileType );
/**
* Return a plugin type given a symbol library using the file extension of \a aLibPath.
*/
static SCH_FILE_T GuessPluginTypeFromLibPath( const wxString& aLibPath );
/**
* Return a plugin type given a schematic using the file extension of \a aSchematicPath.
*/
static SCH_FILE_T GuessPluginTypeFromSchPath( const wxString& aSchematicPath );
};
/**
* 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.
*
* <pre>
* try
* {
* SCH_IO_MGR::Load(...);
* or
* SCH_IO_MGR::Save(...);
* }
* catch( const IO_ERROR& ioe )
* {
* // grab text from ioe, show in error window.
* }
* </pre>
*/
class SCH_PLUGIN
{
public:
//-----<PUBLIC SCH_PLUGIN API>-------------------------------------------------
/**
* Return a brief hard coded name for this SCH_PLUGIN.
*/
virtual const wxString GetName() const = 0;
/**
* Set an optional reporter for warnings/errors.
*/
virtual void SetReporter( REPORTER* aReporter ) {}
/**
* Set an optional progress reporter.
*/
virtual void SetProgressReporter( PROGRESS_REPORTER* aReporter ) {}
/**
* Return the file extension for the #SCH_PLUGIN.
*/
virtual const wxString GetFileExtension() const = 0;
/**
* Return the library file extension for the #SCH_PLUGIN object.
*/
virtual const wxString GetLibraryFileExtension() 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 = nullptr );
/**
* 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 symbol 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, SCHEMATIC* aSchematic,
SCH_SHEET* aAppendToMe = nullptr,
const PROPERTIES* aProperties = nullptr );
/**
* 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 aSheet is the class #SCH_SHEET 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 aSchematic is the #SCHEMATIC object used to access any schematic-wide or project
* information needed to save the document.
*
* @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. Set the
* #PropSaveCurrentSheetOnly property to only save the current sheet.
* Otherwise, all hierarchical sheets are saved.
*
* @throw IO_ERROR if there is a problem saving or exporting.
*/
virtual void Save( const wxString& aFileName, SCH_SHEET* aSheet, SCHEMATIC* aSchematic,
const PROPERTIES* aProperties = nullptr );
/**
* Populate a list of #LIB_SYMBOL alias names contained within the library \a aLibraryPath.
*
* @param aSymbolNameList is an array to populate with the #LIB_SYMBOL names associated with
* the library.
*
* @param aLibraryPath is a locator for the "library", usually a directory, file,
* or URL containing one or more #LIB_SYMBOL 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 = nullptr );
/**
* Populate a list of #LIB_SYMBOL aliases contained within the library \a aLibraryPath.
*
* @note It is the responsibility 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_SYMBOL pointers associated with
* the library.
*
* @param aLibraryPath is a locator for the "library", usually a directory, file,
* or URL containing one or more #LIB_SYMBOL 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<LIB_SYMBOL*>& aSymbolList,
const wxString& aLibraryPath,
const PROPERTIES* aProperties = nullptr );
/**
* Load a #LIB_SYMBOL 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_SYMBOL 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_SYMBOL* LoadSymbol( const wxString& aLibraryPath, const wxString& aPartName,
const PROPERTIES* aProperties = nullptr );
/**
* Write \a aSymbol to an existing library located at \a aLibraryPath. If a #LIB_SYMBOL
* by the same name already exists or there are any conflicting alias names, the new
* #LIB_SYMBOL will silently overwrite any existing aliases and/or part because 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_SYMBOL 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_SYMBOL* aSymbol,
const PROPERTIES* aProperties = nullptr );
/**
* Delete the entire #LIB_SYMBOL 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_SYMBOL associated with it's root #LIB_SYMBOL
* 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 = nullptr );
/**
* 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 = nullptr );
/**
* 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 = nullptr );
/**
* 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
* <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_SCH_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
* #SCH_PLUGIN, which has been avoided to date.
*/
virtual void SymbolLibOptions( PROPERTIES* aListToAppendTo ) const;
/**
* @return true if this plugin supports libraries that contain sub-libraries.
*/
virtual bool SupportsSubLibraries() const { return false; }
/**
* Retrieves a list of sub-libraries in this library.
*
* Some types of symbol library support sub-libraries, which are a single-level organizational
* hierarchy that is implementation-defined per plugin. Most of KiCad ignores sub-libraries and
* treats the hierarchy between library and symbol as flat, but the sub-libraries are used for
* sorting and grouping symbols in the symbol chooser.
*
* Has no effect if SupportsSubLibraries() returns false.
*
* @param aNames will be filled with a list of sub-libraries within this symbol library
*/
virtual void GetSubLibraryNames( std::vector<wxString>& aNames ) {}
/**
* Retrieves a list of (custom) field names that are present on symbols in this library.
* The plugin is responsible for guaranteeing that this list contains the set of unique
* custom field names present on any symbols contained in the library.
*
* The required KiCad fields are not included in this list.
*
* @param aNames will be filled with any custom fields present in this library.
*/
virtual void GetAvailableSymbolFields( std::vector<wxString>& aNames ) {}
/**
* Retrieves a list of (custom) field names that should be shown by default for this library
* in the symbol chooser. This list should be a subset of the result returned by
* GetAvailableSymbolFields().
*
* The preference for which fields to hide and show for a given library is stored on a
* per-library basis in a user's preferences (or in the project local settings for a project-
* local library). The set of fields returned by GetDefaultSymbolFields() will be used if this
* preference is missing.
*
* @param aNames will be filled with the custom field names that should be shown by default
*/
virtual void GetDefaultSymbolFields( std::vector<wxString>& aNames )
{
return GetAvailableSymbolFields( aNames );
}
/**
* 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;
/**
* Some library plugins need to have access to their parent library table.
* @param aTable is the table this plugin is registered within.
*/
virtual void SetLibTable( SYMBOL_LIB_TABLE* aTable ) {}
//-----</PUBLIC SCH_PLUGIN API>------------------------------------------------
/* 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 = nullptr ) :
plugin( aPlugin )
{
}
~SCH_PLUGIN_RELEASER()
{
if( plugin )
release();
}
void release()
{
SCH_IO_MGR::ReleasePlugin( plugin );
plugin = nullptr;
}
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_
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