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//
// TextEncoding.cpp
//
// Library: Foundation
// Package: Text
// Module: TextEncoding
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/TextEncoding.h"
#include "Poco/Exception.h"
#include "Poco/String.h"
#include "Poco/ASCIIEncoding.h"
#include "Poco/Latin1Encoding.h"
#include "Poco/Latin2Encoding.h"
#include "Poco/Latin9Encoding.h"
#include "Poco/UTF32Encoding.h"
#include "Poco/UTF16Encoding.h"
#include "Poco/UTF8Encoding.h"
#include "Poco/Windows1250Encoding.h"
#include "Poco/Windows1251Encoding.h"
#include "Poco/Windows1252Encoding.h"
#include "Poco/RWLock.h"
#include "Poco/SingletonHolder.h"
#include <map>
namespace Poco {
//
// TextEncodingManager
//
class TextEncodingManager
{
public:
TextEncodingManager()
{
TextEncoding::Ptr pUtf8Encoding(new UTF8Encoding);
add(pUtf8Encoding, TextEncoding::GLOBAL);
add(new ASCIIEncoding);
add(new Latin1Encoding);
add(new Latin2Encoding);
add(new Latin9Encoding);
add(pUtf8Encoding);
add(new UTF16Encoding);
add(new UTF32Encoding);
add(new Windows1250Encoding);
add(new Windows1251Encoding);
add(new Windows1252Encoding);
}
~TextEncodingManager()
{
}
void add(TextEncoding::Ptr pEncoding)
{
add(pEncoding, pEncoding->canonicalName());
}
void add(TextEncoding::Ptr pEncoding, const std::string& name)
{
RWLock::ScopedLock lock(_lock, true);
_encodings[name] = pEncoding;
}
void remove(const std::string& name)
{
RWLock::ScopedLock lock(_lock, true);
_encodings.erase(name);
}
TextEncoding::Ptr find(const std::string& name) const
{
RWLock::ScopedLock lock(_lock);
EncodingMap::const_iterator it = _encodings.find(name);
if (it != _encodings.end())
return it->second;
for (it = _encodings.begin(); it != _encodings.end(); ++it)
{
if (it->second->isA(name))
return it->second;
}
return TextEncoding::Ptr();
}
private:
TextEncodingManager(const TextEncodingManager&);
TextEncodingManager& operator = (const TextEncodingManager&);
typedef std::map<std::string, TextEncoding::Ptr, CILess> EncodingMap;
EncodingMap _encodings;
mutable RWLock _lock;
};
//
// TextEncoding
//
const std::string TextEncoding::GLOBAL;
TextEncoding::~TextEncoding()
{
}
int TextEncoding::convert(const unsigned char* bytes) const
{
return static_cast<int>(*bytes);
}
int TextEncoding::convert(int /*ch*/, unsigned char* /*bytes*/, int /*length*/) const
{
return 0;
}
int TextEncoding::queryConvert(const unsigned char* bytes, int /*length*/) const
{
return (int) *bytes;
}
int TextEncoding::sequenceLength(const unsigned char* /*bytes*/, int /*length*/) const
{
return 1;
}
TextEncoding& TextEncoding::byName(const std::string& encodingName)
{
TextEncoding* pEncoding = manager().find(encodingName);
if (pEncoding)
return *pEncoding;
else
throw NotFoundException(encodingName);
}
TextEncoding::Ptr TextEncoding::find(const std::string& encodingName)
{
return manager().find(encodingName);
}
void TextEncoding::add(TextEncoding::Ptr pEncoding)
{
manager().add(pEncoding, pEncoding->canonicalName());
}
void TextEncoding::add(TextEncoding::Ptr pEncoding, const std::string& name)
{
manager().add(pEncoding, name);
}
void TextEncoding::remove(const std::string& encodingName)
{
manager().remove(encodingName);
}
TextEncoding::Ptr TextEncoding::global(TextEncoding::Ptr encoding)
{
TextEncoding::Ptr prev = find(GLOBAL);
add(encoding, GLOBAL);
return prev;
}
TextEncoding& TextEncoding::global()
{
return byName(GLOBAL);
}
namespace
{
static SingletonHolder<TextEncodingManager> sh;
}
TextEncodingManager& TextEncoding::manager()
{
return *sh.get();
}
} // namespace Poco
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