gecko-dev/dom/encoding/TextDecoder.cpp
Ehsan Akhgari 1b83407ce9 Bug 927728 - Part 1: Replace PRUnichar with char16_t; r=roc
This patch was automatically generated by the following script:

#!/bin/bash
# Command to convert PRUnichar to char16_t

function convert() {
echo "Converting $1 to $2..."
find . ! -wholename "*nsprpub*" \
       ! -wholename "*security/nss*" \
       ! -wholename "*modules/libmar*" \
       ! -wholename "*/.hg*" \
       ! -wholename "obj-ff-dbg*" \
       ! -name prtypes.h \
       ! -name Char16.h \
         -type f \
      \( -iname "*.cpp" \
         -o -iname "*.h" \
         -o -iname "*.c" \
         -o -iname "*.cc" \
         -o -iname "*.idl" \
         -o -iname "*.ipdl" \
         -o -iname "*.ipdlh" \
         -o -iname "*.mm" \) | \
    xargs -n 1 sed -i -e "s/\b$1\b/$2/g"
}

convert PRUnichar char16_t
2014-01-04 10:02:17 -05:00

107 lines
3.1 KiB
C++

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/TextDecoder.h"
#include "mozilla/dom/EncodingUtils.h"
#include "nsContentUtils.h"
namespace mozilla {
namespace dom {
static const char16_t kReplacementChar = static_cast<char16_t>(0xFFFD);
void
TextDecoder::Init(const nsAString& aLabel, const bool aFatal,
ErrorResult& aRv)
{
nsAutoString label(aLabel);
EncodingUtils::TrimSpaceCharacters(label);
nsAutoCString encoding;
// Let encoding be the result of getting an encoding from label.
// If encoding is failure or replacement, throw a TypeError.
if (!EncodingUtils::FindEncodingForLabel(label, encoding) ||
encoding.EqualsLiteral("replacement")) {
aRv.ThrowTypeError(MSG_ENCODING_NOT_SUPPORTED, &label);
return;
}
InitWithEncoding(encoding, aFatal);
}
void
TextDecoder::InitWithEncoding(const nsACString& aEncoding, const bool aFatal)
{
mEncoding = aEncoding;
// If the constructor is called with an options argument,
// and the fatal property of the dictionary is set,
// set the internal fatal flag of the decoder object.
mFatal = aFatal;
// Create a decoder object for mEncoding.
mDecoder = EncodingUtils::DecoderForEncoding(mEncoding);
if (mFatal) {
mDecoder->SetInputErrorBehavior(nsIUnicodeDecoder::kOnError_Signal);
}
}
void
TextDecoder::Decode(const char* aInput, const int32_t aLength,
const bool aStream, nsAString& aOutDecodedString,
ErrorResult& aRv)
{
aOutDecodedString.Truncate();
// Run or resume the decoder algorithm of the decoder object's encoder.
int32_t outLen;
nsresult rv = mDecoder->GetMaxLength(aInput, aLength, &outLen);
if (NS_FAILED(rv)) {
aRv.Throw(rv);
return;
}
// Need a fallible allocator because the caller may be a content
// and the content can specify the length of the string.
static const fallible_t fallible = fallible_t();
nsAutoArrayPtr<char16_t> buf(new (fallible) char16_t[outLen + 1]);
if (!buf) {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
return;
}
int32_t length = aLength;
rv = mDecoder->Convert(aInput, &length, buf, &outLen);
MOZ_ASSERT(mFatal || rv != NS_ERROR_ILLEGAL_INPUT);
buf[outLen] = 0;
aOutDecodedString.Append(buf, outLen);
// If the internal streaming flag of the decoder object is not set,
// then reset the encoding algorithm state to the default values
if (!aStream) {
mDecoder->Reset();
if (rv == NS_OK_UDEC_MOREINPUT) {
if (mFatal) {
aRv.Throw(NS_ERROR_DOM_ENCODING_DECODE_ERR);
} else {
// Need to emit a decode error manually
// to simulate the EOF handling of the Encoding spec.
aOutDecodedString.Append(kReplacementChar);
}
}
}
if (NS_FAILED(rv)) {
aRv.Throw(NS_ERROR_DOM_ENCODING_DECODE_ERR);
}
}
void
TextDecoder::GetEncoding(nsAString& aEncoding)
{
CopyASCIItoUTF16(mEncoding, aEncoding);
nsContentUtils::ASCIIToLower(aEncoding);
}
} // dom
} // mozilla