kicad/new/sch_lib_table.h

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/*
* This program source code file is part of KICAD, a free EDA CAD application.
*
* Copyright (C) 2010 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
* Copyright (C) 2010 Kicad Developers, see change_log.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
*/
#ifndef SCH_LIB_TABLE_H_
#define SCH_LIB_TABLE_H_
#include <string>
#include <boost/ptr_container/ptr_map.hpp>
#include <import_export.h>
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#include <sch_lib.h>
class OUTPUTFORMATTER;
class SCH_LIB_TABLE_LEXER;
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namespace SCH {
class LPID;
class PART;
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/**
* Class LIB_TABLE
* holds LIB_TABLE::ROW records, and can be searched in a very high speed
* way based on logical library name.
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* <p>
* This class owns the <b>library table</b>, which is like fstab in concept and maps logical
* library name to library URI, type, and options. It has the following columns:
* <ul>
* <li> Logical Library Name
* <li> Library Type
* <li> Library URI. The full URI to the library source, form dependent on Type.
* <li> Options, used for access, such as password
* </ul>
* <p>
* The Library Type can be one of:
* <ul>
* <li> "dir"
* <li> "schematic" i.e. a parts list from another schematic.
* <li> "subversion"
* <li> "http"
* </ul>
* <p>
* For now, the Library URI types needed to support the various types can be one of those
* shown below, which are typical of each type:
* <ul>
* <li> "file://C:/mylibdir"
* <li> "file://home/user/kicadwork/jtagboard.sch"
* <li> "svn://kicad.org/partlib/trunk"
* <li> "http://kicad.org/partlib"
* </ul>
* <p>
* The applicable library table is built up from several additive rows (table fragments),
* and the final table is a (conceptual) merging of the table fragments. Two
* anticipated sources of the rows are a personal table, and a schematic resident
* table. The schematic resident table rows are considered a higher priority in
* the final dynamically assembled library table. A row in the schematic
* contribution to the library table takes precedence over the personal table
* if there is a collision on logical library name, otherwise the rows simply
* combine without issue to make up the applicable library table.
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*
* @author Dick Hollenbeck
*/
class MY_API LIB_TABLE
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{
public:
/**
* Class ROW
* holds a record identifying a LIB in the LIB_TABLE.
*/
class ROW
{
friend class LIB_TABLE;
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public:
/**
* Function GetLogicalName
* returns the logical name of this library table entry.
*/
const STRING& GetLogicalName() const
{
return logicalName;
}
/**
* Function GetType
* returns the type of LIB represented by this record.
*/
const STRING& GetType() const
{
return libType;
}
/**
* Function GetFullURI
* returns the full location specifying URI for the LIB.
*/
const STRING& GetFullURI() const
{
return fullURI;
}
/**
* Function GetOptions
* returns the options string, which may hold a password or anything else needed to
* instantiate the underlying LIB_SOURCE.
*/
const STRING& GetOptions() const
{
return options;
}
~ROW()
{
delete lib;
}
/**
* Function Format
* serializes this object as utf8 text to an OUTPUTFORMATTER, and tries to
* make it look good using multiple lines and indentation.
* @param out is an OUTPUTFORMATTER
* @param nestLevel is the indentation level to base all lines of the output.
* Actual indentation will be 2 spaces for each nestLevel.
*/
void Format( OUTPUTFORMATTER* out, int nestLevel ) const
throw( IO_ERROR );
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protected:
ROW( LIB_TABLE* aOwner ) :
owner( aOwner ),
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lib( 0 )
{}
/**
* Function SetLogicalName
* changes the logical name of this library, useful for an editor.
*/
void SetLogicalName( const STRING& aLogicalName )
{
logicalName = aLogicalName;
}
/**
* Function SetType
* changes the type represented by this record.
*/
void SetType( const STRING& aType )
{
libType = aType;
}
/**
* Function SetFullURI
* changes the full URI for the library, useful from a library table editor.
*/
void SetFullURI( const STRING& aFullURI )
{
fullURI = aFullURI;
}
/**
* Function SetOptions
* changes the options string for this record, and is useful from
* the library table editor.
*/
void SetOptions( const STRING& aOptions )
{
options = aOptions;
}
private:
LIB_TABLE* owner;
STRING logicalName;
STRING libType;
STRING fullURI;
STRING options;
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LIB* lib; ///< ownership of the loaded LIB is here
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};
/**
* Constructor LIB_TABLE
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* builds a library table by pre-pending this table fragment in front of
* @a aFallBackTable. Loading of this table fragment is done by using Parse().
*
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* @param aFallBackTable is another LIB_TABLE which is searched only when
* a record is not found in this table. No ownership is taken of aFallBackTable.
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*/
LIB_TABLE( LIB_TABLE* aFallBackTable = NULL );
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/**
* Function Parse
* fills this table fragment from information in the input stream \a aParser, which
* is a DSNLEXER customized for the grammar needed to describe instances of this object.
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* The entire textual element spec is <br>
*
* <pre>
* (lib_table
* (lib (logical LOGICAL)(type TYPE)(full_uri FULL_URI)(options OPTIONS))
* (lib (logical LOGICAL)(type TYPE)(full_uri FULL_URI)(options OPTIONS))
* (lib (logical LOGICAL)(type TYPE)(full_uri FULL_URI)(options OPTIONS))
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* )
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* </pre>
*
* When this function is called, the input token stream given by \a aParser
* is assumed to be positioned at the '^' in the following example, i.e. just
* after the identifying keyword and before the content specifying stuff.
* <br>
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* (lib_table ^ (....) )
*
* @param aParser is the input token stream of keywords and symbols.
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*/
void Parse( SCH_LIB_TABLE_LEXER* aParser ) throw( IO_ERROR, PARSE_ERROR );
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/**
* Function Format
* serializes this object as utf8 text to an OUTPUTFORMATTER, and tries to
* make it look good using multiple lines and indentation.
*
* @param out is an OUTPUTFORMATTER
* @param nestLevel is the indentation level to base all lines of the output.
* Actual indentation will be 2 spaces for each nestLevel.
*/
void Format( OUTPUTFORMATTER* out, int nestLevel ) const throw( IO_ERROR );
/**
* Function LookupPart
* finds and loads a PART, and parses it. As long as the part is
* accessible in any LIB_SOURCE, opened or not opened, this function
* will find it and load it into its containing LIB, even if that means
* having to open a LIB in this table that was not previously opened.
*
* @param aLogicalPartID holds the partName and may also hold the logicalLibName. If
* logicalLibName is empty, then @a aFallBackLib should not be NULL.
*
* @param aFallBackLib is used only if aLogicalPartID has an empty logicalLibName.
* This is for the case when an LPID has no logicalLibName because the LPID is using
* a partName from the same LIB as was the referring content.
*
* @return PART* - this will never be NULL, and no ownership is transfered because
* all PARTs live in LIBs. You only get to point to them in some LIB. If the PART
* cannot be found, then an exception is thrown.
*
* @throw IO_ERROR if any problem occurs or if the part cannot be found.
*/
PART* LookupPart( const LPID& aLogicalPartID, LIB* aFallBackLib = NULL ) throw( IO_ERROR );
/**
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* Function GetLogicalLibs
* returns the logical library names, all of them that are in pertinent to
* a lookup done on this LIB_TABLE.
*/
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STRINGS GetLogicalLibs();
//----<read accessors>----------------------------------------------------
// the returning of a const STRING* tells if not found, but might be too
// promiscuous?
/**
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* Function GetLibURI
* returns the full library path from a logical library name.
* @param aLogicalLibraryName is the short name for the library of interest.
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* @return const STRING* - or NULL if not found.
*/
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const STRING* GetLibURI( const STRING& aLogicalLibraryName ) const
{
const ROW* row = FindRow( aLogicalLibraryName );
return row ? &row->fullURI : 0;
}
/**
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* Function GetLibType
* returns the type of a logical library.
* @param aLogicalLibraryName is the short name for the library of interest.
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* @return const STRING* - or NULL if not found.
*/
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const STRING* GetLibType( const STRING& aLogicalLibraryName ) const
{
const ROW* row = FindRow( aLogicalLibraryName );
return row ? &row->libType : 0;
}
/**
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* Function GetLibOptions
* returns the options string for \a aLogicalLibraryName.
* @param aLogicalLibraryName is the short name for the library of interest.
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* @return const STRING* - or NULL if not found.
*/
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const STRING* GetLibOptions( const STRING& aLogicalLibraryName ) const
{
const ROW* row = FindRow( aLogicalLibraryName );
return row ? &row->options : 0;
}
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//----</read accessors>---------------------------------------------------
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#if 1 || defined(DEBUG)
/// implement the tests in here so we can honor the priviledge levels of the
/// accessors, something difficult to do from int main(int, char**)
void Test();
#endif
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protected: // only a table editor can use these
/**
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* Function InsertRow
* adds aRow if it does not already exist or if doReplace is true. If doReplace
* is not true and the key for aRow already exists, the function fails and returns false.
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* The key for the table is the logicalName, and all in this table must be unique.
* @param aRow is the new row to insert, or to forcibly add if doReplace is true.
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* @param doReplace if true, means insert regardless of whether aRow's key already
* exists. If false, then fail if the key already exists.
* @return bool - true if the operation succeeded.
*/
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bool InsertRow( std::auto_ptr<ROW>& aRow, bool doReplace = false );
/**
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* Function FindRow
* returns a ROW* if aLogicalName is found in this table or in any chained
* fallBack table fragment, else NULL.
*/
ROW* FindRow( const STRING& aLogicalName ) const;
private:
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/**
* Function lookupLib
* finds or loads a LIB based on @a aLogicalPartID or @a aFallBackLib.
* If the LIB is already loaded then it is returned as is, else it is loaded.
*
* @param aLogicalPartID holds the partName and may also hold the logicalLibName. If
* logicalLibName is empty, then @a aFallBackLib should not be NULL.
*
* @param aFallBackLib is used only if aLogicalPartID has an empty logicalLibName.
* This is for the case when an LPID has no logicalLibName because the LPID is using
* a partName from the same LIB as was the referring content.
*
* @return LIB* - this will never be NULL, and no ownership is transfered because
* all LIBs live in the LIB_TABLEs. You only get to point to them in some LIB_TABLE.
* If the LIB cannot be found, then an exception is thrown.
*
* @throw IO_ERROR if any problem occurs or if the LIB cannot be found or cannot be loaded.
*/
LIB* lookupLib( const LPID& aLogicalPartID, LIB* aFallBackLib = NULL ) throw( IO_ERROR );
/**
* Function loadLib
* loads a LIB using information in @a aRow. Call only if LIB not
* already loaded.
*/
void loadLib( ROW* aRow ) throw( IO_ERROR );
typedef boost::ptr_map<STRING, ROW> ROWS;
typedef ROWS::iterator ROWS_ITER;
typedef ROWS::const_iterator ROWS_CITER;
ROWS rows;
LIB_TABLE* fallBack;
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};
} // namespace SCH
#endif // SCH_LIB_TABLE_H_