kicad/common/eda_pattern_match.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2015-2017 Chris Pavlina <pavlina.chris@gmail.com>
* Copyright (C) 2015-2023 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 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
*/
#include <eda_pattern_match.h>
#include <limits>
#include <wx/log.h>
#include <wx/tokenzr.h>
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#include <algorithm>
// Helper to make the code cleaner when we want this operation
#define CLAMPED_VAL_INT_MAX( x ) std::min( x, static_cast<size_t>( std::numeric_limits<int>::max() ) )
bool EDA_PATTERN_MATCH_SUBSTR::SetPattern( const wxString& aPattern )
{
m_pattern = aPattern;
return true;
}
wxString const& EDA_PATTERN_MATCH_SUBSTR::GetPattern() const
{
return m_pattern;
}
EDA_PATTERN_MATCH::FIND_RESULT EDA_PATTERN_MATCH_SUBSTR::Find( const wxString& aCandidate ) const
{
int loc = aCandidate.Find( m_pattern );
if( loc == wxNOT_FOUND )
return {};
else
return { loc, static_cast<int>( m_pattern.size() ) };
}
/**
* Context class to set wx loglevel for a block, and always restore it at the end.
*/
class WX_LOGLEVEL_CONTEXT
{
wxLogLevel m_old_level;
public:
WX_LOGLEVEL_CONTEXT( wxLogLevel level )
{
m_old_level = wxLog::GetLogLevel();
wxLog::SetLogLevel( level );
}
~WX_LOGLEVEL_CONTEXT()
{
wxLog::SetLogLevel( m_old_level );
}
};
bool EDA_PATTERN_MATCH_REGEX::SetPattern( const wxString& aPattern )
{
m_pattern = aPattern;
// Evil and undocumented: wxRegEx::Compile calls wxLogError on error, even
// though it promises to just return false. Silence the error.
WX_LOGLEVEL_CONTEXT ctx( wxLOG_FatalError );
return m_regex.Compile( aPattern, wxRE_ADVANCED );
}
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bool EDA_PATTERN_MATCH_REGEX_EXPLICIT::SetPattern( const wxString& aPattern )
{
wxString pattern( aPattern );
if( !pattern.StartsWith( wxT( "^" ) ) )
pattern = wxT( "^" ) + pattern;
if( !pattern.EndsWith( wxT( "$" ) ) )
pattern += wxT( "$" );
return EDA_PATTERN_MATCH_REGEX::SetPattern( pattern );
}
wxString const& EDA_PATTERN_MATCH_REGEX::GetPattern() const
{
return m_pattern;
}
EDA_PATTERN_MATCH::FIND_RESULT EDA_PATTERN_MATCH_REGEX::Find( const wxString& aCandidate ) const
{
if( m_regex.IsValid() )
{
if( m_regex.Matches( aCandidate ) )
{
size_t start, len;
m_regex.GetMatch( &start, &len, 0 );
return { static_cast<int>( CLAMPED_VAL_INT_MAX( start ) ),
static_cast<int>( CLAMPED_VAL_INT_MAX( len ) ) };
}
else
{
return {};
}
}
else
{
int loc = aCandidate.Find( m_pattern );
if( loc == wxNOT_FOUND )
return {};
else
return { loc, static_cast<int>( m_pattern.size() ) };
}
}
bool EDA_PATTERN_MATCH_WILDCARD::SetPattern( const wxString& aPattern )
{
m_wildcard_pattern = aPattern;
// Compile the wildcard string to a regular expression
wxString regex;
regex.Alloc( 2 * aPattern.Length() ); // no need to keep resizing, we know the size roughly
const wxString to_replace = wxT( ".*+?^${}()|[]/\\" );
for( wxString::const_iterator it = aPattern.begin(); it < aPattern.end(); ++it )
{
wxUniChar c = *it;
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if( c == '?' )
{
regex += wxT( "." );
}
else if( c == '*' )
{
regex += wxT( ".*" );
}
else if( to_replace.Find( c ) != wxNOT_FOUND )
{
regex += "\\";
regex += c;
}
else
{
regex += c;
}
}
return EDA_PATTERN_MATCH_REGEX::SetPattern( regex );
}
wxString const& EDA_PATTERN_MATCH_WILDCARD::GetPattern() const
{
return m_wildcard_pattern;
}
EDA_PATTERN_MATCH::FIND_RESULT EDA_PATTERN_MATCH_WILDCARD::Find( const wxString& aCandidate ) const
{
return EDA_PATTERN_MATCH_REGEX::Find( aCandidate );
}
bool EDA_PATTERN_MATCH_WILDCARD_EXPLICIT::SetPattern( const wxString& aPattern )
{
m_wildcard_pattern = aPattern;
// Compile the wildcard string to a regular expression
wxString regex;
regex.Alloc( 2 * aPattern.Length() ); // no need to keep resizing, we know the size roughly
const wxString to_replace = wxT( ".*+?^${}()|[]/\\" );
regex += wxT( "^" );
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for( wxString::const_iterator it = aPattern.begin(); it < aPattern.end(); ++it )
{
wxUniChar c = *it;
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if( c == '?' )
{
regex += wxT( "." );
}
else if( c == '*' )
{
regex += wxT( ".*" );
}
else if( to_replace.Find( c ) != wxNOT_FOUND )
{
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regex += wxS( "\\" );
regex += c;
}
else
{
regex += c;
}
}
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regex += wxT( "$" );
return EDA_PATTERN_MATCH_REGEX::SetPattern( regex );
}
bool EDA_PATTERN_MATCH_RELATIONAL::SetPattern( const wxString& aPattern )
{
bool matches = m_regex_search.Matches( aPattern );
if( !matches || m_regex_search.GetMatchCount() < 5 )
return false;
m_pattern = aPattern;
wxString key = m_regex_search.GetMatch( aPattern, 1 );
wxString rel = m_regex_search.GetMatch( aPattern, 2 );
wxString val = m_regex_search.GetMatch( aPattern, 3 );
wxString unit = m_regex_search.GetMatch( aPattern, 4 );
m_key = key.Lower();
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if( rel == wxS( "<" ) )
m_relation = LT;
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else if( rel == wxS( "<=" ) )
m_relation = LE;
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else if( rel == wxS( "=" ) )
m_relation = EQ;
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else if( rel == wxS( ">=" ) )
m_relation = GE;
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else if( rel == wxS( ">" ) )
m_relation = GT;
else
return false;
if( val == "" )
{
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// Matching on empty values keeps the match list from going empty when the user
// types the relational operator character, which helps prevent confusion.
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m_relation = ANY;
}
else if( !val.ToCDouble( &m_value ) )
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{
return false;
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}
auto unit_it = m_units.find( unit.Lower() );
if( unit_it != m_units.end() )
m_value *= unit_it->second;
else
return false;
m_pattern = aPattern;
return true;
}
wxString const& EDA_PATTERN_MATCH_RELATIONAL::GetPattern() const
{
return m_pattern;
}
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EDA_PATTERN_MATCH::FIND_RESULT EDA_PATTERN_MATCH_RELATIONAL::Find( const wxString& aCandidate ) const
{
wxStringTokenizer tokenizer( aCandidate );
size_t lastpos = 0;
while( tokenizer.HasMoreTokens() )
{
const wxString token = tokenizer.GetNextToken();
int found_delta = FindOne( token );
if( found_delta != EDA_PATTERN_NOT_FOUND )
{
size_t found = (size_t) found_delta + lastpos;
return { static_cast<int>( CLAMPED_VAL_INT_MAX( found ) ), 0 };
}
lastpos = tokenizer.GetPosition();
}
return {};
}
int EDA_PATTERN_MATCH_RELATIONAL::FindOne( const wxString& aCandidate ) const
{
bool matches = m_regex_description.Matches( aCandidate );
if( !matches )
return EDA_PATTERN_NOT_FOUND;
size_t start, len;
m_regex_description.GetMatch( &start, &len, 0 );
wxString key = m_regex_description.GetMatch( aCandidate, 1 );
wxString val = m_regex_description.GetMatch( aCandidate, 2 );
wxString unit = m_regex_description.GetMatch( aCandidate, 3 );
int istart = ( start > std::numeric_limits<int>::max() ) ? std::numeric_limits<int>::max() : start;
if( key.Lower() != m_key )
return EDA_PATTERN_NOT_FOUND;
double val_parsed;
if( !val.ToCDouble( &val_parsed ) )
return EDA_PATTERN_NOT_FOUND;
auto unit_it = m_units.find( unit.Lower() );
if( unit_it != m_units.end() )
val_parsed *= unit_it->second;
switch( m_relation )
{
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case LT: return val_parsed < m_value ? istart : EDA_PATTERN_NOT_FOUND;
case LE: return val_parsed <= m_value ? istart : EDA_PATTERN_NOT_FOUND;
case EQ: return val_parsed == m_value ? istart : EDA_PATTERN_NOT_FOUND;
case GE: return val_parsed >= m_value ? istart : EDA_PATTERN_NOT_FOUND;
case GT: return val_parsed > m_value ? istart : EDA_PATTERN_NOT_FOUND;
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case ANY: return istart;
default: return EDA_PATTERN_NOT_FOUND;
}
}
wxRegEx EDA_PATTERN_MATCH_RELATIONAL::m_regex_description(
R"((\w+)[=:]([-+]?[\d.]+)(\w*))", wxRE_ADVANCED );
wxRegEx EDA_PATTERN_MATCH_RELATIONAL::m_regex_search(
R"(^(\w+)(<|<=|=|>=|>)([-+]?[\d.]*)(\w*)$)", wxRE_ADVANCED );
const std::map<wxString, double> EDA_PATTERN_MATCH_RELATIONAL::m_units = {
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{ wxS( "p" ), 1e-12 },
{ wxS( "n" ), 1e-9 },
{ wxS( "u" ), 1e-6 },
{ wxS( "m" ), 1e-3 },
{ wxS( "" ), 1. },
{ wxS( "k" ), 1e3 },
{ wxS( "meg" ), 1e6 },
{ wxS( "g" ), 1e9 },
{ wxS( "t" ), 1e12 },
{ wxS( "ki" ), 1024. },
{ wxS( "mi" ), 1048576. },
{ wxS( "gi" ), 1073741824. },
{ wxS( "ti" ), 1099511627776. } };
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EDA_COMBINED_MATCHER::EDA_COMBINED_MATCHER( const wxString& aPattern,
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COMBINED_MATCHER_CONTEXT aContext ) :
m_pattern( aPattern )
{
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switch( aContext )
{
case CTX_LIBITEM:
// Whatever syntax users prefer, it shall be matched.
AddMatcher( aPattern, std::make_unique<EDA_PATTERN_MATCH_REGEX>() );
AddMatcher( aPattern, std::make_unique<EDA_PATTERN_MATCH_WILDCARD>() );
AddMatcher( aPattern, std::make_unique<EDA_PATTERN_MATCH_RELATIONAL>() );
// If any of the above matchers couldn't be created because the pattern
// syntax does not match, the substring will try its best.
AddMatcher( aPattern, std::make_unique<EDA_PATTERN_MATCH_SUBSTR>() );
break;
case CTX_NETCLASS:
AddMatcher( aPattern, std::make_unique<EDA_PATTERN_MATCH_REGEX_EXPLICIT>() );
AddMatcher( aPattern, std::make_unique<EDA_PATTERN_MATCH_WILDCARD_EXPLICIT>() );
break;
case CTX_SIGNAL:
AddMatcher( aPattern, std::make_unique<EDA_PATTERN_MATCH_REGEX>() );
AddMatcher( aPattern, std::make_unique<EDA_PATTERN_MATCH_WILDCARD>() );
AddMatcher( aPattern, std::make_unique<EDA_PATTERN_MATCH_SUBSTR>() );
break;
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}
}
bool EDA_COMBINED_MATCHER::Find( const wxString& aTerm, int& aMatchersTriggered, int& aPosition )
{
aPosition = EDA_PATTERN_NOT_FOUND;
aMatchersTriggered = 0;
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for( const std::unique_ptr<EDA_PATTERN_MATCH>& matcher : m_matchers )
{
EDA_PATTERN_MATCH::FIND_RESULT local_find = matcher->Find( aTerm );
if( local_find )
{
aMatchersTriggered += 1;
if( local_find.start < aPosition || aPosition == EDA_PATTERN_NOT_FOUND )
aPosition = local_find.start;
}
}
return aPosition != EDA_PATTERN_NOT_FOUND;
}
wxString const& EDA_COMBINED_MATCHER::GetPattern() const
{
return m_pattern;
}
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void EDA_COMBINED_MATCHER::AddMatcher( const wxString &aPattern,
std::unique_ptr<EDA_PATTERN_MATCH> aMatcher )
{
if ( aMatcher->SetPattern( aPattern ) )
m_matchers.push_back( std::move( aMatcher ) );
}