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kicad/include/lib_table_base.h

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2010-2012 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
* Copyright (C) 2012 Wayne Stambaugh <stambaughw@gmail.com>
* Copyright (C) 2012-2021 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 _LIB_TABLE_BASE_H_
#define _LIB_TABLE_BASE_H_
#include <map>
#include <boost/noncopyable.hpp>
#include <boost/ptr_container/ptr_vector.hpp>
#include <memory>
#include <mutex>
#include <project.h>
#include <string_utf8_map.h>
#include <richio.h>
#define FP_LATE_ENVVAR 1 ///< late=1/early=0 environment variable expansion
class OUTPUTFORMATTER;
class LIB_TABLE_LEXER;
class LIB_ID;
class LIB_TABLE_ROW;
class LIB_TABLE_GRID;
class LIB_TABLE;
class IO_ERROR;
typedef boost::ptr_vector< LIB_TABLE_ROW > LIB_TABLE_ROWS;
typedef LIB_TABLE_ROWS::iterator LIB_TABLE_ROWS_ITER;
typedef LIB_TABLE_ROWS::const_iterator LIB_TABLE_ROWS_CITER;
/**
* Allows boost pointer containers to make clones of the data stored in them. Since they
* store pointers the data is cloned. Copying and assigning pointers would cause ownership
* issues if the standard C++ containers were used.
*/
LIB_TABLE_ROW* new_clone( const LIB_TABLE_ROW& aRow );
/**
* Hold a record identifying a library accessed by the appropriate plug in object in the
* #LIB_TABLE. This is an abstract base class from which to derive library specific rows.
*/
class LIB_TABLE_ROW : boost::noncopyable
{
public:
LIB_TABLE_ROW() :
enabled( true ),
visible( true ),
m_loaded( false ),
m_parent( nullptr )
{
}
virtual ~LIB_TABLE_ROW()
{
}
LIB_TABLE_ROW( const wxString& aNick, const wxString& aURI, const wxString& aOptions,
const wxString& aDescr = wxEmptyString, LIB_TABLE* aParent = nullptr ) :
nickName( aNick ),
description( aDescr ),
enabled( true ),
visible( true ),
m_loaded( false ),
m_parent( aParent )
{
properties.reset();
SetOptions( aOptions );
SetFullURI( aURI );
}
bool operator==( const LIB_TABLE_ROW& r ) const;
bool operator!=( const LIB_TABLE_ROW& r ) const { return !( *this == r ); }
/**
* @return the logical name of this library table row.
*/
const wxString& GetNickName() const { return nickName; }
/**
* Change the logical name of this library, useful for an editor.
*/
void SetNickName( const wxString& aNickName ) { nickName = aNickName; }
/**
* @return true if the library was loaded without error
*/
bool GetIsLoaded() const { return m_loaded; }
/**
* Mark the row as being a loaded library
*/
void SetLoaded( bool aLoaded ) { m_loaded = aLoaded; };
/**
* @return the enabled status of this library row
*/
bool GetIsEnabled() const { return enabled; }
/**
* Change the enabled status of this library
*/
void SetEnabled( bool aEnabled = true ) { enabled = aEnabled; }
bool GetIsVisible() const { return visible; }
void SetVisible( bool aVisible = true ) { visible = aVisible; }
/**
* Return the type of library represented by this row.
*/
virtual const wxString GetType() const = 0;
/**
* Change the type of library represented by this row that must be implemented in the
* derived object to provide the library table row type.
*/
virtual void SetType( const wxString& aType ) = 0;
/**
* Return the full location specifying URI for the LIB, either in original UI form or
* in environment variable expanded form.
*
* @param aSubstituted Tells if caller wanted the substituted form, else not.
*/
const wxString GetFullURI( bool aSubstituted = false ) const;
/**
* Change the full URI for the library.
*/
void SetFullURI( const wxString& aFullURI );
/**
* Return the options string, which may hold a password or anything else needed to
* instantiate the underlying library plugin.
*/
const wxString& GetOptions() const { return options; }
/**
* Change the library options strings.
*/
void SetOptions( const wxString& aOptions );
/**
* Return the description of the library referenced by this row.
*/
const wxString& GetDescr() const { return description; }
/**
* Change the description of the library referenced by this row.
*/
void SetDescr( const wxString& aDescr ) { description = aDescr; }
LIB_TABLE* GetParent() const { return m_parent; }
void SetParent( LIB_TABLE* aParent ) { m_parent = aParent; }
std::mutex& GetMutex() { return m_loadMutex; }
/**
* Return the constant #PROPERTIES for this library (#LIB_TABLE_ROW). These are
* the "options" in a table.
*/
const STRING_UTF8_MAP* GetProperties() const { return properties.get(); }
/**
* Serialize 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;
LIB_TABLE_ROW* clone() const
{
return do_clone();
}
protected:
LIB_TABLE_ROW( const LIB_TABLE_ROW& aRow ) :
nickName( aRow.nickName ),
uri_user( aRow.uri_user ),
#if !FP_LATE_ENVVAR
uri_expanded( aRow.uri_expanded ),
#endif
options( aRow.options ),
description( aRow.description ),
enabled( aRow.enabled ),
visible( aRow.visible ),
m_loaded( aRow.m_loaded ),
m_parent( aRow.m_parent )
{
if( aRow.properties )
properties = std::make_unique<STRING_UTF8_MAP>( *aRow.properties.get() );
else
properties.reset();
}
void operator=( const LIB_TABLE_ROW& aRow );
private:
virtual LIB_TABLE_ROW* do_clone() const = 0;
void setProperties( STRING_UTF8_MAP* aProperties );
wxString nickName;
wxString uri_user; ///< what user entered from UI or loaded from disk
#if !FP_LATE_ENVVAR
wxString uri_expanded; ///< from ExpandSubstitutions()
#endif
wxString options;
wxString description;
bool enabled = true; ///< Whether the LIB_TABLE_ROW is enabled
bool visible = true; ///< Whether the LIB_TABLE_ROW is visible in choosers
bool m_loaded = false; ///< Whether the LIB_TABLE_ROW is loaded
LIB_TABLE* m_parent; ///< Pointer to the table this row lives in (maybe null)
std::unique_ptr<STRING_UTF8_MAP> properties;
std::mutex m_loadMutex;
};
/**
* Manage #LIB_TABLE_ROW records (rows), and can be searched based on library nickname.
*
* <p>
* This class owns the <b>library table</b>, which is like fstab in concept and maps
* logical library name to the library URI, type, and options. It is heavily based on
* the SWEET parser work done by Dick Hollenbeck and can be seen in new/sch_lib_table.h.
* A library table has the following columns:
* <ul>
* <li> Logical Library Name (Nickname)
* <li> Library Type, used to determine which plugin to load to access the library.
* <li> Library URI. The full URI to the library source, form dependent on Type.
* <li> Options, used for as yet to be defined information such as user names or passwords
* </ul>
* </p>
* <p>
* The Library Type can be one of:
* <ul>
* <li> "file"
* <li> "ftp"
* <li> "http"
* </ul>
* </p>
* <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> "ftp://kicad.org/partlib/trunk"
* <li> "http://kicad.org/partlib"
* </ul>
* </p>
* <p>
* The library table is built up from several additive entries (table fragments), and the
* final table is a (conceptual) merging of the table fragments. Two anticipated sources
* of the entries are a personal table saved in the KiCad configuration and a project
* resident table that resides in project file. The project footprint table entries are
* considered a higher priority in the final dynamically assembled library table. An row
* in the project file contribution to the library table takes precedence over the personal
* table if there is a collision of logical library names. Otherwise, the entries simply
* combine without issue to make up the applicable library table.
* </p>
*
* @author Wayne Stambaugh
*/
class LIB_TABLE : public PROJECT::_ELEM
{
public:
/**
* Parse the #LIB_TABLE_LEXER s-expression library table format into the appropriate
* #LIB_TABLE_ROW objects.
*
* @param aLexer is the lexer to parse.
*
* @throw IO_ERROR if an I/O error occurs during parsing.
* @throw PARSER_ERROR if the lexer format to parse is invalid.
* @throw boost::bad_pointer if an any attempt to add an invalid pointer to the
* boost::ptr_vector.
* @throw boost::bad_index if an index outside the row table bounds is accessed.
*/
virtual void Parse( LIB_TABLE_LEXER* aLexer ) = 0;
/**
* Generate the table in s-expression format to \a aOutput with an indentation level
* of \a aIndentLevel.
*
* @param aOutput is the #OUTPUTFORMATTER to format the table into.
* @param aIndentLevel is the indentation level (2 spaces) to indent.
*
* @throw IO_ERROR if an I/O error occurs during output.
* @throw boost::interprocess::lock_except if separate process attempt to access the table.
*/
virtual void Format( OUTPUTFORMATTER* aOutput, int aIndentLevel ) const = 0;
/**
* Build a library table by pre-pending this table fragment in front of \a aFallBackTable.
* Loading of this table fragment is done by using Parse().
*
* @param aFallBackTable is another LIB_TABLE which is searched only when
* a row is not found in this table. No ownership is
* taken of aFallBackTable.
*/
LIB_TABLE( LIB_TABLE* aFallBackTable = nullptr );
virtual ~LIB_TABLE();
/// Delete all rows.
void Clear()
{
std::lock_guard<std::mutex> lock( m_nickIndexMutex );
rows.clear();
nickIndex.clear();
}
/**
* Compares this table against another.
*
* This compares the row *contents* against each other.
* Any fallback tables are not checked.
*/
bool operator==( const LIB_TABLE& r ) const
{
if( rows.size() == r.rows.size() )
{
unsigned i;
for( i = 0; i < rows.size() && rows[i] == r.rows[i]; ++i )
;
if( i == rows.size() )
return true;
}
return false;
}
bool operator!=( const LIB_TABLE& r ) const { return !( *this == r ); }
/**
* Get the number of rows contained in the table
*/
unsigned GetCount() const
{
return rows.size();
}
/**
* Get the 'n'th #LIB_TABLE_ROW object
* @param aIndex index of row (must exist: from 0 to GetCount() - 1)
* @return reference to the row
*/
LIB_TABLE_ROW& At( unsigned aIndex )
{
return rows[aIndex];
}
/**
* @copydoc At()
*/
const LIB_TABLE_ROW& At( unsigned aIndex ) const
{
return rows[aIndex];
}
/**
* Return true if the table is empty.
*
* @param aIncludeFallback is used to determine if the fallback table should be
* included in the test.
*
* @return true if the footprint library table is empty.
*/
bool IsEmpty( bool aIncludeFallback = true );
/**
* @return the library description from @a aNickname, or an empty string
* if @a aNickname does not exist.
*/
const wxString GetDescription( const wxString& aNickname );
/**
* Test for the existence of \a aNickname in the library table.
*
* @param aCheckEnabled if true will only return true for enabled libraries
* @return true if a library \a aNickname exists in the table.
*/
bool HasLibrary( const wxString& aNickname, bool aCheckEnabled = false ) const;
/**
* Test for the existence of \a aPath in the library table.
*
* @param aCheckEnabled if true will only return true for enabled libraries
* @return true if a library \a aNickname exists in the table.
*/
bool HasLibraryWithPath( const wxString& aPath ) const;
/**
* Return the logical library names, all of them that are pertinent to
* a look up done on this LIB_TABLE.
*/
std::vector<wxString> GetLogicalLibs();
/**
* Return the full URI of the library mapped to \a aLibNickname.
*/
wxString GetFullURI( const wxString& aLibNickname, bool aExpandEnvVars = true ) const;
/**
* Adds \a 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.
*
* The key for the table is the nickName, and all in this table must be unique.
*
* @param aRow is the new row to insert, or to forcibly add if doReplace is true.
* @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.
*/
bool InsertRow( LIB_TABLE_ROW* aRow, bool doReplace = false );
/**
* Removes a row from the table.
* @param aRow is the row to remove
* @return true if the row was found (and removed)
*/
bool RemoveRow( const LIB_TABLE_ROW* aRow )
{
for( auto iter = rows.begin(); iter != rows.end(); ++iter )
{
if( *iter == *aRow )
{
rows.erase( iter, iter + 1 );
reindex();
return true;
}
}
return false;
}
/**
* @return a #LIB_TABLE_ROW pointer if \a aURI is found in this table or in any chained
* fallBack table fragments, else NULL.
*/
const LIB_TABLE_ROW* FindRowByURI( const wxString& aURI );
/**
* Load the library table using the path defined by \a aFileName aFallBackTable.
*
* @param aFileName contains the full path to the s-expression file.
*
* @throw IO_ERROR if an error occurs attempting to load the footprint library
* table.
*/
void Load( const wxString& aFileName );
/**
* Write this library table to \a aFileName in s-expression form.
*
* @param aFileName is the name of the file to write to.
*/
void Save( const wxString& aFileName ) const;
/**
* Parses \a aOptionsList and places the result into a #PROPERTIES object which is
* returned. If the options field is empty, then the returned PROPERTIES will be
* a NULL pointer.
*
* <p>
* Typically aOptionsList comes from the "options" field within a LIB_TABLE_ROW and
* the format is simply a comma separated list of name value pairs. e.g.:
* [name1[=value1][|name2[=value2]]] etc. When using the UI to create or edit
* a library table, this formatting is handled for you.
* </p>
*/
static STRING_UTF8_MAP* ParseOptions( const std::string& aOptionsList );
/**
* Returns a list of options from the aProperties parameter.
*
* The name=value pairs will be separated with the '|' character. The =value portion may
* not be present. You might expect something like "name1=value1|name2=value2|flag_me".
* Notice that flag_me does not have a value. This is ok.
*
* @param aProperties is the PROPERTIES to format or NULL. If NULL the returned
* string will be empty.
*/
static UTF8 FormatOptions( const STRING_UTF8_MAP* aProperties );
protected:
/**
* Return a #LIB_TABLE_ROW if \a aNickname is found in this table or in any chained
* fallBack table fragment, else NULL.
*
* @param aNickname is the name of the library table entry to find.
* @param aCheckIfEnabled is a flag to check if the library table entry is enabled.
* @return a pointer to the #LIB_TABLE_ROW found.
*/
LIB_TABLE_ROW* findRow( const wxString& aNickname, bool aCheckIfEnabled = false ) const;
void reindex()
{
std::lock_guard<std::mutex> lock( m_nickIndexMutex );
nickIndex.clear();
for( LIB_TABLE_ROWS_ITER it = rows.begin(); it != rows.end(); ++it )
nickIndex.insert( INDEX_VALUE( it->GetNickName(), it - rows.begin() ) );
}
void ensureIndex()
{
// The dialog lib table editor may not maintain the nickIndex.
// Lazy indexing may be required. To handle lazy indexing, we must enforce
// that "nickIndex" is either empty or accurate, but never inaccurate.
if( !nickIndex.size() )
reindex();
}
private:
friend class PANEL_FP_LIB_TABLE;
friend class LIB_TABLE_GRID;
protected:
LIB_TABLE_ROWS rows;
/// this is a non-owning index into the LIB_TABLE_ROWS table
typedef std::map<wxString,int> INDEX; // "int" is std::vector array index
typedef INDEX::iterator INDEX_ITER;
typedef INDEX::const_iterator INDEX_CITER;
typedef INDEX::value_type INDEX_VALUE;
/// this particular key is the nickName within each row.
INDEX nickIndex;
LIB_TABLE* fallBack;
/// Mutex to protect access to the nickIndex variable
mutable std::mutex m_nickIndexMutex;
};
#endif // _LIB_TABLE_BASE_H_
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