392 lines
10 KiB
C++
392 lines
10 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2015-2017 Chris Pavlina <pavlina.chris@gmail.com>
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* Copyright (C) 2015-2019 KiCad Developers, see AUTHORS.txt for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <eda_pattern_match.h>
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#include <wx/log.h>
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#include <wx/tokenzr.h>
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#include <climits>
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bool EDA_PATTERN_MATCH_SUBSTR::SetPattern( const wxString& aPattern )
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{
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m_pattern = aPattern;
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return true;
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}
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wxString const& EDA_PATTERN_MATCH_SUBSTR::GetPattern() const
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{
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return m_pattern;
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}
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int EDA_PATTERN_MATCH_SUBSTR::Find( const wxString& aCandidate ) const
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{
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int loc = aCandidate.Find( m_pattern );
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return ( loc == wxNOT_FOUND ) ? EDA_PATTERN_NOT_FOUND : loc;
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}
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/**
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* Context class to set wx loglevel for a block, and always restore it at the end.
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*/
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class WX_LOGLEVEL_CONTEXT
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{
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wxLogLevel m_old_level;
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public:
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WX_LOGLEVEL_CONTEXT( wxLogLevel level )
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{
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m_old_level = wxLog::GetLogLevel();
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wxLog::SetLogLevel( level );
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}
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~WX_LOGLEVEL_CONTEXT()
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{
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wxLog::SetLogLevel( m_old_level );
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}
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};
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bool EDA_PATTERN_MATCH_REGEX::SetPattern( const wxString& aPattern )
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{
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m_pattern = aPattern;
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// Evil and undocumented: wxRegEx::Compile calls wxLogError on error, even
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// though it promises to just return false. Silence the error.
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WX_LOGLEVEL_CONTEXT ctx( wxLOG_FatalError );
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return m_regex.Compile( aPattern, wxRE_ADVANCED );
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}
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wxString const& EDA_PATTERN_MATCH_REGEX::GetPattern() const
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{
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return m_pattern;
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}
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int EDA_PATTERN_MATCH_REGEX::Find( const wxString& aCandidate ) const
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{
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if( m_regex.IsValid() )
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{
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if( m_regex.Matches( aCandidate ) )
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{
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size_t start, len;
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m_regex.GetMatch( &start, &len, 0 );
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return ( start > INT_MAX ) ? INT_MAX : start;
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}
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else
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{
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return EDA_PATTERN_NOT_FOUND;
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}
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}
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else
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{
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int loc = aCandidate.Find( m_pattern );
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return ( loc == wxNOT_FOUND ) ? EDA_PATTERN_NOT_FOUND : loc;
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}
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}
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bool EDA_PATTERN_MATCH_WILDCARD::SetPattern( const wxString& aPattern )
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{
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m_wildcard_pattern = aPattern;
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// Compile the wildcard string to a regular expression
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wxString regex;
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regex.Alloc( 2 * aPattern.Length() ); // no need to keep resizing, we know the size roughly
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const wxString to_replace = wxT( ".*+?^${}()|[]/\\" );
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for( wxString::const_iterator it = aPattern.begin(); it < aPattern.end(); ++it )
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{
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wxUniChar c = *it;
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if( c == '?' )
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{
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regex += wxT( "." );
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}
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else if( c == '*' )
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{
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regex += wxT( ".*" );
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}
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else if( to_replace.Find( c ) != wxNOT_FOUND )
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{
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regex += "\\";
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regex += c;
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}
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else
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{
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regex += c;
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}
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}
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return EDA_PATTERN_MATCH_REGEX::SetPattern( regex );
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}
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wxString const& EDA_PATTERN_MATCH_WILDCARD::GetPattern() const
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{
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return m_wildcard_pattern;
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}
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int EDA_PATTERN_MATCH_WILDCARD::Find( const wxString& aCandidate ) const
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{
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return EDA_PATTERN_MATCH_REGEX::Find( aCandidate );
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}
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bool EDA_PATTERN_MATCH_WILDCARD_EXPLICIT::SetPattern( const wxString& aPattern )
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{
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m_wildcard_pattern = aPattern;
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// Compile the wildcard string to a regular expression
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wxString regex;
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regex.Alloc( 2 * aPattern.Length() ); // no need to keep resizing, we know the size roughly
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const wxString to_replace = wxT( ".*+?^${}()|[]/\\" );
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regex += wxT( "^" );
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for( wxString::const_iterator it = aPattern.begin(); it < aPattern.end(); ++it )
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{
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wxUniChar c = *it;
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if( c == '?' )
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{
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regex += wxT( "." );
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}
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else if( c == '*' )
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{
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regex += wxT( ".*" );
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}
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else if( to_replace.Find( c ) != wxNOT_FOUND )
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{
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regex += "\\";
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regex += c;
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}
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else
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{
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regex += c;
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}
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}
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regex += wxT( "$" );
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return EDA_PATTERN_MATCH_REGEX::SetPattern( regex );
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}
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bool EDA_PATTERN_MATCH_RELATIONAL::SetPattern( const wxString& aPattern )
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{
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bool matches = m_regex_search.Matches( aPattern );
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if( !matches || m_regex_search.GetMatchCount() < 5 )
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return false;
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m_pattern = aPattern;
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wxString key = m_regex_search.GetMatch( aPattern, 1 );
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wxString rel = m_regex_search.GetMatch( aPattern, 2 );
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wxString val = m_regex_search.GetMatch( aPattern, 3 );
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wxString unit = m_regex_search.GetMatch( aPattern, 4 );
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m_key = key.Lower();
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if( rel == "<" )
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m_relation = LT;
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else if( rel == "<=" )
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m_relation = LE;
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else if( rel == "=" )
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m_relation = EQ;
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else if( rel == ">=" )
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m_relation = GE;
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else if( rel == ">" )
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m_relation = GT;
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else
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return false;
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if( val == "" )
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{
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// Matching on empty values keeps the match list from going empty when
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// the user types the relational operator character, which helps prevent
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// confusion.
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m_relation = NONE;
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}
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else if( !val.ToCDouble( &m_value ) )
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return false;
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auto unit_it = m_units.find( unit.Lower() );
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if( unit_it != m_units.end() )
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m_value *= unit_it->second;
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else
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return false;
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m_pattern = aPattern;
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return true;
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}
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wxString const& EDA_PATTERN_MATCH_RELATIONAL::GetPattern() const
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{
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return m_pattern;
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}
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int EDA_PATTERN_MATCH_RELATIONAL::Find( const wxString& aCandidate ) const
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{
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wxStringTokenizer tokenizer( aCandidate );
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size_t lastpos = 0;
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while( tokenizer.HasMoreTokens() )
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{
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const wxString token = tokenizer.GetNextToken();
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int found_delta = FindOne( token );
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if( found_delta != EDA_PATTERN_NOT_FOUND )
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{
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size_t found = (size_t) found_delta + lastpos;
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return ( found > INT_MAX ) ? INT_MAX : (int) found;
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}
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lastpos = tokenizer.GetPosition();
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}
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return EDA_PATTERN_NOT_FOUND;
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}
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int EDA_PATTERN_MATCH_RELATIONAL::FindOne( const wxString& aCandidate ) const
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{
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bool matches = m_regex_description.Matches( aCandidate );
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if( !matches )
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return EDA_PATTERN_NOT_FOUND;
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size_t start, len;
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m_regex_description.GetMatch( &start, &len, 0 );
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wxString key = m_regex_description.GetMatch( aCandidate, 1 );
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wxString val = m_regex_description.GetMatch( aCandidate, 2 );
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wxString unit = m_regex_description.GetMatch( aCandidate, 3 );
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int istart = ( start > INT_MAX ) ? INT_MAX : start;
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if( key.Lower() != m_key )
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return EDA_PATTERN_NOT_FOUND;
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double val_parsed;
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if( !val.ToCDouble( &val_parsed ) )
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return EDA_PATTERN_NOT_FOUND;
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auto unit_it = m_units.find( unit.Lower() );
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if( unit_it != m_units.end() )
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val_parsed *= unit_it->second;
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switch( m_relation )
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{
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case LT: return val_parsed < m_value ? istart : EDA_PATTERN_NOT_FOUND;
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case LE: return val_parsed <= m_value ? istart : EDA_PATTERN_NOT_FOUND;
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case EQ: return val_parsed == m_value ? istart : EDA_PATTERN_NOT_FOUND;
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case GE: return val_parsed >= m_value ? istart : EDA_PATTERN_NOT_FOUND;
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case GT: return val_parsed > m_value ? istart : EDA_PATTERN_NOT_FOUND;
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case NONE: return istart;
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default: return EDA_PATTERN_NOT_FOUND;
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}
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}
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wxRegEx EDA_PATTERN_MATCH_RELATIONAL::m_regex_description(
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R"((\w+)[=:]([-+]?[\d.]+)(\w*))", wxRE_ADVANCED );
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wxRegEx EDA_PATTERN_MATCH_RELATIONAL::m_regex_search(
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R"(^(\w+)(<|<=|=|>=|>)([-+]?[\d.]*)(\w*)$)", wxRE_ADVANCED );
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const std::map<wxString, double> EDA_PATTERN_MATCH_RELATIONAL::m_units = {
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{ "p", 1e-12 },
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{ "n", 1e-9 },
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{ "u", 1e-6 },
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{ "m", 1e-3 },
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{ "", 1. },
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{ "k", 1e3 },
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{ "meg",1e6 },
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{ "g", 1e9 },
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{ "t", 1e12 },
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{ "ki", 1024. },
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{ "mi", 1048576. },
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{ "gi", 1073741824. },
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{ "ti", 1099511627776. } };
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EDA_COMBINED_MATCHER::EDA_COMBINED_MATCHER( const wxString& aPattern )
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: m_pattern( aPattern )
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{
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// Whatever syntax users prefer, it shall be matched.
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AddMatcher( aPattern, std::make_unique<EDA_PATTERN_MATCH_REGEX>() );
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AddMatcher( aPattern, std::make_unique<EDA_PATTERN_MATCH_WILDCARD>() );
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AddMatcher( aPattern, std::make_unique<EDA_PATTERN_MATCH_RELATIONAL>() );
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// If any of the above matchers couldn't be created because the pattern
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// syntax does not match, the substring will try its best.
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AddMatcher( aPattern, std::make_unique<EDA_PATTERN_MATCH_SUBSTR>() );
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}
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bool EDA_COMBINED_MATCHER::Find( const wxString& aTerm, int& aMatchersTriggered, int& aPosition )
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{
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aPosition = EDA_PATTERN_NOT_FOUND;
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aMatchersTriggered = 0;
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for( auto const& matcher : m_matchers )
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{
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int local_find = matcher->Find( aTerm );
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if ( local_find != EDA_PATTERN_NOT_FOUND )
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{
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aMatchersTriggered += 1;
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if ( local_find < aPosition || aPosition == EDA_PATTERN_NOT_FOUND )
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{
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aPosition = local_find;
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}
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}
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}
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return aPosition != EDA_PATTERN_NOT_FOUND;
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}
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wxString const& EDA_COMBINED_MATCHER::GetPattern() const
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{
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return m_pattern;
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}
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void EDA_COMBINED_MATCHER::AddMatcher(
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const wxString &aPattern,
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std::unique_ptr<EDA_PATTERN_MATCH> aMatcher )
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{
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if ( aMatcher->SetPattern( aPattern ) )
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{
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m_matchers.push_back( std::move( aMatcher ) );
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}
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}
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