footprint_info_impl.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2011 Jean-Pierre Charras, <[email protected]>
 * Copyright (C) 2013-2016 SoftPLC Corporation, Dick Hollenbeck <[email protected]>
 * Copyright (C) 1992-2022 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 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 <footprint_info_impl.h>
 
#include <dialogs/html_message_box.h>
#include <footprint.h>
#include <footprint_info.h>
#include <fp_lib_table.h>
#include <kiway.h>
#include <locale_io.h>
#include <lib_id.h>
#include <progress_reporter.h>
#include <string_utils.h>
#include <thread_pool.h>
#include <wildcards_and_files_ext.h>
 
#include <wx/textfile.h>
#include <wx/txtstrm.h>
#include <wx/wfstream.h>
 
 
void FOOTPRINT_INFO_IMPL::load()
{
 FP_LIB_TABLE* fptable = m_owner->GetTable();
 
 wxASSERT( fptable );
 
 const FOOTPRINT* footprint = fptable->GetEnumeratedFootprint( m_nickname, m_fpname );
 
 if( footprint == nullptr ) // Should happen only with malformed/broken libraries
 {
 m_pad_count = 0;
 m_unique_pad_count = 0;
 }
 else
 {
 m_pad_count = footprint->GetPadCount( DO_NOT_INCLUDE_NPTH );
 m_unique_pad_count = footprint->GetUniquePadCount( DO_NOT_INCLUDE_NPTH );
 m_keywords = footprint->GetKeywords();
 m_doc = footprint->GetDescription();
 }
 
 m_loaded = true;
}
 
 
bool FOOTPRINT_LIST_IMPL::CatchErrors( const std::function<void()>& aFunc )
{
 try
 {
 aFunc();
 }
 catch( const IO_ERROR& ioe )
 {
 m_errors.move_push( std::make_unique<IO_ERROR>( ioe ) );
 return false;
 }
 catch( const std::exception& se )
 {
 // This is a round about way to do this, but who knows what THROW_IO_ERROR()
 // may be tricked out to do someday, keep it in the game.
 try
 {
 THROW_IO_ERROR( se.what() );
 }
 catch( const IO_ERROR& ioe )
 {
 m_errors.move_push( std::make_unique<IO_ERROR>( ioe ) );
 }
 
 return false;
 }
 
 return true;
}
 
 
bool FOOTPRINT_LIST_IMPL::ReadFootprintFiles( FP_LIB_TABLE* aTable, const wxString* aNickname,
 PROGRESS_REPORTER* aProgressReporter )
{
 long long int generatedTimestamp = 0;
 
 if( !CatchErrors( [&]()
 {
 generatedTimestamp = aTable->GenerateTimestamp( aNickname );
 } ) )
 {
 return false;
 }
 
 if( generatedTimestamp == m_list_timestamp )
 return true;
 
 // Disable KIID generation: not needed for library parts; sometimes very slow
 KIID_NIL_SET_RESET reset_kiid;
 
 m_progress_reporter = aProgressReporter;
 
 if( m_progress_reporter )
 {
 m_progress_reporter->SetMaxProgress( m_queue_in.size() );
 m_progress_reporter->Report( _( "Fetching footprint libraries..." ) );
 }
 
 m_cancelled = false;
 m_lib_table = aTable;
 
 // Clear data before reading files
 m_errors.clear();
 m_list.clear();
 m_queue_in.clear();
 m_queue_out.clear();
 
 if( aNickname )
 {
 m_queue_in.push( *aNickname );
 }
 else
 {
 for( const wxString& nickname : aTable->GetLogicalLibs() )
 m_queue_in.push( nickname );
 }
 
 
 loadLibs();
 
 if( !m_cancelled )
 {
 if( m_progress_reporter )
 {
 m_progress_reporter->SetMaxProgress( m_queue_out.size() );
 m_progress_reporter->AdvancePhase();
 m_progress_reporter->Report( _( "Loading footprints..." ) );
 }
 
 loadFootprints();
 
 if( m_progress_reporter )
 m_progress_reporter->AdvancePhase();
 }
 
 if( m_cancelled )
 m_list_timestamp = 0; // God knows what we got before we were canceled
 else
 m_list_timestamp = generatedTimestamp;
 
 return m_errors.empty();
}
 
 
void FOOTPRINT_LIST_IMPL::loadLibs()
{
 thread_pool& tp = GetKiCadThreadPool();
 size_t num_returns = m_queue_in.size();
 std::vector<std::future<size_t>> returns( num_returns );
 
 auto loader_job =
 [this]() -> size_t
 {
 wxString nickname;
 size_t retval = 0;
 
 if( !m_cancelled && m_queue_in.pop( nickname ) )
 {
 if( CatchErrors( [this, &nickname]()
 {
 m_lib_table->PrefetchLib( nickname );
 m_queue_out.push( nickname );
 } ) && m_progress_reporter )
 {
 m_progress_reporter->AdvanceProgress();
 }
 
 ++retval;
 }
 
 return retval;
 };
 
 for( size_t ii = 0; ii < num_returns; ++ii )
 returns[ii] = tp.submit( loader_job );
 
 for( const std::future<size_t>& ret : returns )
 {
 std::future_status status = ret.wait_for( std::chrono::milliseconds( 250 ) );
 
 while( status != std::future_status::ready )
 {
 if( m_progress_reporter && !m_progress_reporter->KeepRefreshing() )
 m_cancelled = true;
 
 status = ret.wait_for( std::chrono::milliseconds( 250 ) );
 }
 }
}
 
 
void FOOTPRINT_LIST_IMPL::loadFootprints()
{
 LOCALE_IO toggle_locale;
 
 // Parse the footprints in parallel. WARNING! This requires changing the locale, which is
 // GLOBAL. It is only thread safe to construct the LOCALE_IO before the threads are created,
 // destroy it after they finish, and block the main (GUI) thread while they work. Any deviation
 // from this will cause nasal demons.
 //
 // TODO: blast LOCALE_IO into the sun
 
 SYNC_QUEUE<std::unique_ptr<FOOTPRINT_INFO>> queue_parsed;
 thread_pool& tp = GetKiCadThreadPool();
 size_t num_elements = m_queue_out.size();
 std::vector<std::future<size_t>> returns( num_elements );
 
 auto fp_thread =
 [ this, &queue_parsed ]() -> size_t
 {
 wxString nickname;
 
 if( m_cancelled || !m_queue_out.pop( nickname ) )
 return 0;
 
 wxArrayString fpnames;
 
 CatchErrors(
 [&]()
 {
 m_lib_table->FootprintEnumerate( fpnames, nickname, false );
 } );
 
 for( wxString fpname : fpnames )
 {
 CatchErrors(
 [&]()
 {
 auto* fpinfo = new FOOTPRINT_INFO_IMPL( this, nickname, fpname );
 queue_parsed.move_push( std::unique_ptr<FOOTPRINT_INFO>( fpinfo ) );
 } );
 
 if( m_cancelled )
 return 0;
 }
 
 if( m_progress_reporter )
 m_progress_reporter->AdvanceProgress();
 
 return 1;
 };
 
 for( size_t ii = 0; ii < num_elements; ++ii )
 returns[ii] = tp.submit( fp_thread );
 
 for( const std::future<size_t>& ret : returns )
 {
 std::future_status status = ret.wait_for( std::chrono::milliseconds( 250 ) );
 
 while( status != std::future_status::ready )
 {
 if( m_progress_reporter )
 m_progress_reporter->KeepRefreshing();
 
 status = ret.wait_for( std::chrono::milliseconds( 250 ) );
 }
 }
 
 std::unique_ptr<FOOTPRINT_INFO> fpi;
 
 while( queue_parsed.pop( fpi ) )
 m_list.push_back( std::move( fpi ) );
 
 std::sort( m_list.begin(), m_list.end(),
 []( std::unique_ptr<FOOTPRINT_INFO> const& lhs,
 std::unique_ptr<FOOTPRINT_INFO> const& rhs ) -> bool
 {
 return *lhs < *rhs;
 } );
}
 
 
FOOTPRINT_LIST_IMPL::FOOTPRINT_LIST_IMPL() :
 m_list_timestamp( 0 ),
 m_progress_reporter( nullptr ),
 m_cancelled( false )
{
}
 
 
void FOOTPRINT_LIST_IMPL::WriteCacheToFile( const wxString& aFilePath )
{
 wxFileName tmpFileName = wxFileName::CreateTempFileName( aFilePath );
 wxFFileOutputStream outStream( tmpFileName.GetFullPath() );
 wxTextOutputStream txtStream( outStream );
 
 if( !outStream.IsOk() )
 {
 return;
 }
 
 txtStream << wxString::Format( wxT( "%lld" ), m_list_timestamp ) << endl;
 
 for( std::unique_ptr<FOOTPRINT_INFO>& fpinfo : m_list )
 {
 txtStream << fpinfo->GetLibNickname() << endl;
 txtStream << fpinfo->GetName() << endl;
 txtStream << EscapeString( fpinfo->GetDescription(), CTX_LINE ) << endl;
 txtStream << EscapeString( fpinfo->GetKeywords(), CTX_LINE ) << endl;
 txtStream << wxString::Format( wxT( "%d" ), fpinfo->GetOrderNum() ) << endl;
 txtStream << wxString::Format( wxT( "%u" ), fpinfo->GetPadCount() ) << endl;
 txtStream << wxString::Format( wxT( "%u" ), fpinfo->GetUniquePadCount() ) << endl;
 }
 
 txtStream.Flush();
 outStream.Close();
 
 if( !wxRenameFile( tmpFileName.GetFullPath(), aFilePath, true ) )
 {
 // cleanup in case rename failed
 // its also not the end of the world since this is just a cache file
 wxRemoveFile( tmpFileName.GetFullPath() );
 }
}
 
 
void FOOTPRINT_LIST_IMPL::ReadCacheFromFile( const wxString& aFilePath )
{
 wxTextFile cacheFile( aFilePath );
 
 m_list_timestamp = 0;
 m_list.clear();
 
 try
 {
 if( cacheFile.Exists() && cacheFile.Open() )
 {
 cacheFile.GetFirstLine().ToLongLong( &m_list_timestamp );
 
 while( cacheFile.GetCurrentLine() + 6 < cacheFile.GetLineCount() )
 {
 wxString libNickname = cacheFile.GetNextLine();
 wxString name = cacheFile.GetNextLine();
 wxString desc = UnescapeString( cacheFile.GetNextLine() );
 wxString keywords = UnescapeString( cacheFile.GetNextLine() );
 int orderNum = wxAtoi( cacheFile.GetNextLine() );
 unsigned int padCount = (unsigned) wxAtoi( cacheFile.GetNextLine() );
 unsigned int uniquePadCount = (unsigned) wxAtoi( cacheFile.GetNextLine() );
 
 FOOTPRINT_INFO_IMPL* fpinfo = new FOOTPRINT_INFO_IMPL( libNickname, name, desc,
 keywords, orderNum,
 padCount, uniquePadCount );
 
 m_list.emplace_back( std::unique_ptr<FOOTPRINT_INFO>( fpinfo ) );
 }
 }
 }
 catch( ... )
 {
 // whatever went wrong, invalidate the cache
 m_list_timestamp = 0;
 }
 
 // Sanity check: an empty list is very unlikely to be correct.
 if( m_list.size() == 0 )
 m_list_timestamp = 0;
 
 if( cacheFile.IsOpened() )
 cacheFile.Close();
}