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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/String.h>
#include <AK/StringBuilder.h>
#include <LibTextCodec/Decoder.h>
namespace TextCodec {
Latin1Decoder& latin1_decoder()
{
static Latin1Decoder* decoder;
if (!decoder)
decoder = new Latin1Decoder;
return *decoder;
}
UTF8Decoder& utf8_decoder()
{
static UTF8Decoder* decoder;
if (!decoder)
decoder = new UTF8Decoder;
return *decoder;
}
Decoder* decoder_for(const String& encoding)
{
if (encoding.equals_ignoring_case("iso-8859-1"))
return &latin1_decoder();
if (encoding.equals_ignoring_case("utf-8"))
return &utf8_decoder();
return nullptr;
}
String UTF8Decoder::to_utf8(const StringView& input)
{
return input;
}
String Latin1Decoder::to_utf8(const StringView& input)
{
StringBuilder builder(input.length());
for (size_t i = 0; i < input.length(); ++i) {
u8 ch = input[i];
// Latin1 is the same as the first 256 Unicode codepoints, so no mapping is needed, just utf-8 encoding.
builder.append_codepoint(ch);
}
return builder.to_string();
}
}
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