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#include "XmlUniformiser.h"
int
notEqualIndex( std::string expectedXml,
std::string actualXml )
{
unsigned int index = 0;
while ( index < actualXml.length() &&
index < expectedXml.length() &&
actualXml[index] == expectedXml[index] )
++index;
return index;
}
/// Asserts that two XML string are equivalent.
void
checkXmlEqual( std::string expectedXml,
std::string actualXml,
CPPUNIT_NS::SourceLine sourceLine )
{
std::string expected = XmlUniformiser( expectedXml ).stripped();
std::string actual = XmlUniformiser( actualXml ).stripped();
if ( expected == actual )
return;
int index = notEqualIndex( expected, actual );
CPPUNIT_NS::OStringStream message;
message << "differ at index: " << index << "\n"
<< "expected: " << expected.substr(index) << "\n"
<< "but was : " << actual.substr( index );
CPPUNIT_NS::Asserter::failNotEqual( expected,
actual,
sourceLine,
message.str() );
}
XmlUniformiser::XmlUniformiser( const std::string &xml ) :
m_xml( xml ),
m_index( 0 )
{
}
std::string
XmlUniformiser::stripped()
{
while ( isValidIndex() )
{
skipSpaces();
if ( startsWith( "<?" ) )
skipProcessed();
else if ( startsWith( "<!--" ) )
skipComment();
else if ( startsWith( "<" ) )
copyElement();
else
copyElementContent();
}
return m_stripped;
}
void
XmlUniformiser::skipSpaces()
{
while ( isSpace() )
skipNext();
}
bool
XmlUniformiser::isSpace( char c )
{
return c < 33;
}
bool
XmlUniformiser::isSpace()
{
return isValidIndex() && isSpace( m_xml[m_index] );
}
bool
XmlUniformiser::isValidIndex()
{
return m_index < m_xml.length();
}
void
XmlUniformiser::skipNext( int count )
{
while ( count-- > 0 )
++m_index;
}
void
XmlUniformiser::copyNext( int count )
{
while ( count-- > 0 && isValidIndex() )
m_stripped += m_xml[ m_index++ ];
}
bool
XmlUniformiser::startsWith( std::string expected )
{
std::string actual = m_xml.substr( m_index, expected.length() );
return actual == expected;
}
void
XmlUniformiser::skipProcessed()
{
while ( isValidIndex() && !startsWith( "?>" ) )
skipNext();
if ( isValidIndex() )
skipNext( 2 );
}
void
XmlUniformiser::skipComment()
{
while ( isValidIndex() && !startsWith( "-->" ) )
skipNext();
if ( isValidIndex() )
skipNext( 3 );
}
void
XmlUniformiser::copyElement()
{
copyElementName();
copyElementAttributes();
}
void
XmlUniformiser::copyElementName()
{
while ( isValidIndex() &&
!( isSpace() || startsWith( ">" ) ) )
copyNext();
}
void
XmlUniformiser::copyElementAttributes()
{
do
{
bool hadSpace = isSpace();
skipSpaces();
if ( startsWith( ">" ) )
break;
if ( hadSpace )
m_stripped += ' ';
copyAttributeName();
skipSpaces();
if ( startsWith( "=" ) )
{
copyNext();
copyAttributeValue();
}
else // attribute should always be valued, ne ?
m_stripped += ' ';
}
while ( isValidIndex() );
copyNext();
}
void
XmlUniformiser::copyAttributeName()
{
while ( isValidIndex() && !isEndOfAttributeName() )
copyNext();
}
bool
XmlUniformiser::isEndOfAttributeName()
{
return isSpace() || startsWith( ">" ) || startsWith( "=" );
}
void
XmlUniformiser::copyAttributeValue()
{
skipSpaces();
copyUntilDoubleQuote();
copyUntilDoubleQuote();
}
void
XmlUniformiser::copyUntilDoubleQuote()
{
while ( isValidIndex() && !startsWith("\"") )
copyNext();
copyNext(); // '"'
}
void
XmlUniformiser::copyElementContent()
{
while ( isValidIndex() && !startsWith( "<" ) )
copyNext();
removeTrailingSpaces();
}
void
XmlUniformiser::removeTrailingSpaces()
{
int index = m_stripped.length();
while ( index-1 > 0 && isSpace( m_stripped[index-1] ) )
--index;
m_stripped.resize( index );
}
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