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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#ifndef cmXMLWiter_h
#define cmXMLWiter_h
#include "cmConfigure.h" // IWYU pragma: keep
#include "cmXMLSafe.h"
#include <chrono>
#include <ctime>
#include <ostream>
#include <stack>
#include <string>
#include <vector>
class cmXMLWriter
{
CM_DISABLE_COPY(cmXMLWriter)
public:
cmXMLWriter(std::ostream& output, std::size_t level = 0);
~cmXMLWriter();
void StartDocument(const char* encoding = "UTF-8");
void EndDocument();
void StartElement(std::string const& name);
void EndElement();
void BreakAttributes();
template <typename T>
void Attribute(const char* name, T const& value)
{
this->PreAttribute();
this->Output << name << "=\"" << SafeAttribute(value) << '"';
}
void Element(const char* name);
template <typename T>
void Element(std::string const& name, T const& value)
{
this->StartElement(name);
this->Content(value);
this->EndElement();
}
template <typename T>
void Content(T const& content)
{
this->PreContent();
this->Output << SafeContent(content);
}
void Comment(const char* comment);
void CData(std::string const& data);
void Doctype(const char* doctype);
void ProcessingInstruction(const char* target, const char* data);
void FragmentFile(const char* fname);
void SetIndentationElement(std::string const& element);
private:
void ConditionalLineBreak(bool condition, std::size_t indent);
void PreAttribute();
void PreContent();
void CloseStartElement();
private:
static cmXMLSafe SafeAttribute(const char* value)
{
return cmXMLSafe(value);
}
static cmXMLSafe SafeAttribute(std::string const& value)
{
return cmXMLSafe(value);
}
template <typename T>
static T SafeAttribute(T value)
{
return value;
}
static cmXMLSafe SafeContent(const char* value)
{
return cmXMLSafe(value).Quotes(false);
}
static cmXMLSafe SafeContent(std::string const& value)
{
return cmXMLSafe(value).Quotes(false);
}
/*
* Convert a std::chrono::system::time_point to the number of seconds since
* the UN*X epoch.
*
* It would be tempting to convert a time_point to number of seconds by
* using time_since_epoch(). Unfortunately the C++11 standard does not
* specify what the epoch of the system_clock must be.
* Therefore we must assume it is an arbitary point in time. Instead of this
* method, it is recommended to convert it by means of the to_time_t method.
*/
static std::time_t SafeContent(
std::chrono::system_clock::time_point const& value)
{
return std::chrono::system_clock::to_time_t(value);
}
template <typename T>
static T SafeContent(T value)
{
return value;
}
private:
std::ostream& Output;
std::stack<std::string, std::vector<std::string>> Elements;
std::string IndentationElement;
std::size_t Level;
bool ElementOpen;
bool BreakAttrib;
bool IsContent;
};
#endif
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