catch2/include/internal/catch_xmlwriter.cpp

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/*
* Created by Phil on 19/07/2017.
*
* Distributed under the Boost Software License, Version 1.0. (See accompanying
* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*/
#include "catch_xmlwriter.h"
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#include <iomanip>
namespace Catch {
XmlEncode::XmlEncode( std::string const& str, ForWhat forWhat )
: m_str( str ),
m_forWhat( forWhat )
{}
void XmlEncode::encodeTo( std::ostream& os ) const {
// Apostrophe escaping not necessary if we always use " to write attributes
// (see: http://www.w3.org/TR/xml/#syntax)
for( std::size_t i = 0; i < m_str.size(); ++ i ) {
char c = m_str[i];
switch( c ) {
case '<': os << "&lt;"; break;
case '&': os << "&amp;"; break;
case '>':
// See: http://www.w3.org/TR/xml/#syntax
if( i > 2 && m_str[i-1] == ']' && m_str[i-2] == ']' )
os << "&gt;";
else
os << c;
break;
case '\"':
if( m_forWhat == ForAttributes )
os << "&quot;";
else
os << c;
break;
default:
// Escape control chars - based on contribution by @espenalb in PR #465 and
// by @mrpi PR #588
if ( ( c >= 0 && c < '\x09' ) || ( c > '\x0D' && c < '\x20') || c=='\x7F' ) {
// see http://stackoverflow.com/questions/404107/why-are-control-characters-illegal-in-xml-1-0
os << "\\x" << std::uppercase << std::hex << std::setfill('0') << std::setw(2)
<< static_cast<int>( c );
}
else
os << c;
}
}
}
std::ostream& operator << ( std::ostream& os, XmlEncode const& xmlEncode ) {
xmlEncode.encodeTo( os );
return os;
}
XmlWriter::ScopedElement::ScopedElement( XmlWriter* writer )
: m_writer( writer )
{}
XmlWriter::ScopedElement::ScopedElement( ScopedElement&& other ) noexcept
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: m_writer( other.m_writer ){
other.m_writer = nullptr;
}
XmlWriter::ScopedElement& XmlWriter::ScopedElement::operator=( ScopedElement&& other ) noexcept {
if ( m_writer ) {
m_writer->endElement();
}
m_writer = other.m_writer;
other.m_writer = nullptr;
return *this;
}
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XmlWriter::ScopedElement::~ScopedElement() {
if( m_writer )
m_writer->endElement();
}
XmlWriter::ScopedElement& XmlWriter::ScopedElement::writeText( std::string const& text, bool indent ) {
m_writer->writeText( text, indent );
return *this;
}
XmlWriter::XmlWriter( std::ostream& os ) : m_os( os )
{
writeDeclaration();
}
XmlWriter::~XmlWriter() {
while( !m_tags.empty() )
endElement();
}
XmlWriter& XmlWriter::startElement( std::string const& name ) {
ensureTagClosed();
newlineIfNecessary();
m_os << m_indent << '<' << name;
m_tags.push_back( name );
m_indent += " ";
m_tagIsOpen = true;
return *this;
}
XmlWriter::ScopedElement XmlWriter::scopedElement( std::string const& name ) {
ScopedElement scoped( this );
startElement( name );
return scoped;
}
XmlWriter& XmlWriter::endElement() {
newlineIfNecessary();
m_indent = m_indent.substr( 0, m_indent.size()-2 );
if( m_tagIsOpen ) {
m_os << "/>";
m_tagIsOpen = false;
}
else {
m_os << m_indent << "</" << m_tags.back() << ">";
}
m_os << std::endl;
m_tags.pop_back();
return *this;
}
XmlWriter& XmlWriter::writeAttribute( std::string const& name, std::string const& attribute ) {
if( !name.empty() && !attribute.empty() )
m_os << ' ' << name << "=\"" << XmlEncode( attribute, XmlEncode::ForAttributes ) << '"';
return *this;
}
XmlWriter& XmlWriter::writeAttribute( std::string const& name, bool attribute ) {
m_os << ' ' << name << "=\"" << ( attribute ? "true" : "false" ) << '"';
return *this;
}
XmlWriter& XmlWriter::writeText( std::string const& text, bool indent ) {
if( !text.empty() ){
bool tagWasOpen = m_tagIsOpen;
ensureTagClosed();
if( tagWasOpen && indent )
m_os << m_indent;
m_os << XmlEncode( text );
m_needsNewline = true;
}
return *this;
}
XmlWriter& XmlWriter::writeComment( std::string const& text ) {
ensureTagClosed();
m_os << m_indent << "<!--" << text << "-->";
m_needsNewline = true;
return *this;
}
void XmlWriter::writeStylesheetRef( std::string const& url ) {
m_os << "<?xml-stylesheet type=\"text/xsl\" href=\"" << url << "\"?>\n";
}
XmlWriter& XmlWriter::writeBlankLine() {
ensureTagClosed();
m_os << '\n';
return *this;
}
void XmlWriter::ensureTagClosed() {
if( m_tagIsOpen ) {
m_os << ">" << std::endl;
m_tagIsOpen = false;
}
}
void XmlWriter::writeDeclaration() {
m_os << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
}
void XmlWriter::newlineIfNecessary() {
if( m_needsNewline ) {
m_os << std::endl;
m_needsNewline = false;
}
}
}