Restructuring directory layout. Move towards "Modern CMake" usage.
This commit is contained in:
Jim Evins
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/* SubstitutionField.cpp
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*
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* Copyright (C) 2017 Jim Evins <evins@snaught.com>
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*
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* This file is part of gLabels-qt.
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*
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* gLabels-qt is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* gLabels-qt 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 gLabels-qt. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "SubstitutionField.h"
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#include <QTextStream>
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namespace glabels::model
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{
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SubstitutionField::SubstitutionField()
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: mNewLine(false), mFormatType(0)
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{
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}
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SubstitutionField::SubstitutionField( const QString& string )
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: mNewLine(false), mFormatType(0)
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{
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QStringRef s(&string);
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parse( s, *this );
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}
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QString SubstitutionField::evaluate( const merge::Record* record ) const
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{
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QString value = mDefaultValue;
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if ( record && record->contains(mFieldName) && !record->value(mFieldName).isEmpty() )
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{
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value = record->value(mFieldName);
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}
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if ( !mFormatType.isNull() )
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{
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value = formatValue( value );
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}
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if ( record && record->contains(mFieldName) && !record->value(mFieldName).isEmpty() && mNewLine )
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{
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value = "\n" + value;
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}
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return value;
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}
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QString SubstitutionField::fieldName() const
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{
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return mFieldName;
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}
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QString SubstitutionField::defaultValue() const
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{
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return mDefaultValue;
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}
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QString SubstitutionField::format() const
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{
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return mFormat;
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}
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QChar SubstitutionField::formatType() const
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{
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return mFormatType;
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}
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bool SubstitutionField::newLine() const
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{
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return mNewLine;
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}
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bool SubstitutionField::parse( QStringRef& s, SubstitutionField& field )
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{
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QStringRef sTmp = s;
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if ( sTmp.startsWith( "${" ) )
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{
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sTmp = sTmp.mid(2);
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if ( parseFieldName( sTmp, field ) )
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{
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while ( sTmp.size() && sTmp[0] == ':' )
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{
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sTmp = sTmp.mid(1);
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if ( !parseModifier( sTmp, field ) )
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{
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return false;
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}
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}
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if ( sTmp.size() && sTmp[0] == '}' )
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{
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sTmp = sTmp.mid(1);
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// Success. Update s.
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s = sTmp;
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return true;
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}
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}
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}
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return false;
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}
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bool SubstitutionField::parseFieldName( QStringRef& s, SubstitutionField& field )
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{
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bool success = false;
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while ( s.size() && (s[0].isDigit() || s[0].isLetter() || s[0] == '_' || s[0] == '-') )
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{
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field.mFieldName.append( s[0] );
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s = s.mid(1);
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success = true;
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}
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return success;
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}
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bool SubstitutionField::parseModifier( QStringRef& s, SubstitutionField& field )
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{
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bool success = false;
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if ( s.size() && s[0] == '%' )
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{
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s = s.mid(1);
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success = parseFormatModifier( s, field );
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}
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else if ( s.size() && s[0] == '=' )
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{
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s = s.mid(1);
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success = parseDefaultValueModifier( s, field );
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}
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else if ( s.size() && s[0] == 'n' )
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{
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s = s.mid(1);
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success = parseNewLineModifier( s, field );
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}
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return success;
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}
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bool SubstitutionField::parseDefaultValueModifier( QStringRef& s, SubstitutionField& field )
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{
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field.mDefaultValue.clear();
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while ( s.size() && !QString( ":}" ).contains( s[0] ) )
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{
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if ( s[0] == '\\' )
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{
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s = s.mid(1); // Skip escape
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if ( s.size() )
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{
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field.mDefaultValue.append( s[0] );
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s = s.mid(1);
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}
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}
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else
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{
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field.mDefaultValue.append( s[0] );
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s = s.mid(1);
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}
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}
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return true;
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}
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bool SubstitutionField::parseFormatModifier( QStringRef& s, SubstitutionField& field )
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{
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bool success = false;
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field.mFormat = "%";
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parseFormatFlags( s, field );
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parseFormatWidth( s, field );
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if ( s.size() && s[0] == '.' )
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{
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field.mFormat += ".";
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s = s.mid(1);
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parseFormatPrecision( s, field );
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}
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parseFormatType( s, field );
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return true; // Don't let invalid formats kill entire SubstitutionField
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}
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bool SubstitutionField::parseFormatFlags( QStringRef& s, SubstitutionField& field )
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{
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while ( s.size() && QString( "-+ 0" ).contains( s[0] ) )
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{
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field.mFormat += s[0];
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s = s.mid(1);
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}
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return true;
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}
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bool SubstitutionField::parseFormatWidth( QStringRef& s, SubstitutionField& field )
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{
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return parseNaturalInteger( s, field );
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}
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bool SubstitutionField::parseFormatPrecision( QStringRef& s, SubstitutionField& field )
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{
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return parseNaturalInteger( s, field );
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}
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bool SubstitutionField::parseFormatType( QStringRef& s, SubstitutionField& field )
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{
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bool success = false;
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if ( s.size() && QString( "diufFeEgGxXos" ).contains( s[0] ) )
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{
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field.mFormatType = s[0];
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field.mFormat += s[0];
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s = s.mid(1);
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success = true;
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}
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return success;
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}
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bool SubstitutionField::parseNaturalInteger( QStringRef& s, SubstitutionField& field )
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{
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bool success = false;
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if ( s.size() && s[0] >= '1' && s[0] <= '9' )
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{
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field.mFormat += s[0];
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s = s.mid(1);
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while ( s.size() && s[0].isDigit() )
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{
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field.mFormat += s[0];
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s = s.mid(1);
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}
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success = true;
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}
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return success;
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}
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bool SubstitutionField::parseNewLineModifier( QStringRef& s, SubstitutionField& field )
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{
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field.mNewLine = true;
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return true;
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}
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QString SubstitutionField::formatValue( const QString& value ) const
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{
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switch (mFormatType.unicode())
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{
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case 'd':
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case 'i':
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return QString::asprintf( mFormat.toStdString().c_str(),
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value.toLongLong(nullptr,0) );
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break;
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case 'u':
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case 'x':
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case 'X':
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case 'o':
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return QString::asprintf( mFormat.toStdString().c_str(),
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value.toULongLong(nullptr,0) );
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break;
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case 'f':
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case 'F':
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case 'e':
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case 'E':
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case 'g':
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case 'G':
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return QString::asprintf( mFormat.toStdString().c_str(),
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value.toDouble() );
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break;
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case 's':
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return QString::asprintf( mFormat.toStdString().c_str(),
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value.toStdString().c_str() );
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break;
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default:
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// Invalid format
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return "";
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break;
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}
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}
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} // namespace glabels::model
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