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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /intl/uconv/ucvlatin/nsUnicodeToUTF16.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'intl/uconv/ucvlatin/nsUnicodeToUTF16.cpp')
-rw-r--r--intl/uconv/ucvlatin/nsUnicodeToUTF16.cpp115
1 files changed, 115 insertions, 0 deletions
diff --git a/intl/uconv/ucvlatin/nsUnicodeToUTF16.cpp b/intl/uconv/ucvlatin/nsUnicodeToUTF16.cpp
new file mode 100644
index 000000000..607f10abb
--- /dev/null
+++ b/intl/uconv/ucvlatin/nsUnicodeToUTF16.cpp
@@ -0,0 +1,115 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "nsUnicodeToUTF16.h"
+#include "mozilla/CheckedInt.h"
+#include <string.h>
+
+NS_IMETHODIMP nsUnicodeToUTF16BE::Convert(const char16_t * aSrc, int32_t * aSrcLength,
+ char * aDest, int32_t * aDestLength)
+{
+ int32_t srcInLen = *aSrcLength;
+ int32_t destInLen = *aDestLength;
+ int32_t srcOutLen = 0;
+ int32_t destOutLen = 0;
+ int32_t copyCharLen;
+ char16_t *p = (char16_t*)aDest;
+
+ // Handle BOM if necessary
+ if (0!=mBOM) {
+ if (destInLen < 2) {
+ goto needmoreoutput;
+ }
+
+ *p++ = mBOM;
+ mBOM = 0;
+ destOutLen +=2;
+ }
+ // find out the length of copy
+
+ copyCharLen = srcInLen;
+ if (copyCharLen > (destInLen - destOutLen) / 2) {
+ copyCharLen = (destInLen - destOutLen) / 2;
+ }
+
+ // copy the data by swaping
+ CopyData((char*)p , aSrc, copyCharLen );
+
+ srcOutLen += copyCharLen;
+ destOutLen += copyCharLen * 2;
+ if (copyCharLen < srcInLen) {
+ goto needmoreoutput;
+ }
+
+ *aSrcLength = srcOutLen;
+ *aDestLength = destOutLen;
+ return NS_OK;
+
+needmoreoutput:
+ *aSrcLength = srcOutLen;
+ *aDestLength = destOutLen;
+ return NS_OK_UENC_MOREOUTPUT;
+}
+
+NS_IMETHODIMP nsUnicodeToUTF16BE::GetMaxLength(const char16_t * aSrc, int32_t aSrcLength,
+ int32_t * aDestLength)
+{
+ mozilla::CheckedInt32 length = aSrcLength;
+
+ if (0 != mBOM) {
+ length += 1;
+ }
+
+ length *= 2;
+
+ if (!length.isValid()) {
+ return NS_ERROR_OUT_OF_MEMORY;
+ }
+
+ *aDestLength = length.value();
+ return NS_OK_UENC_EXACTLENGTH;
+}
+
+NS_IMETHODIMP nsUnicodeToUTF16BE::Finish(char * aDest, int32_t * aDestLength)
+{
+ if (0 != mBOM) {
+ if (*aDestLength >= 2) {
+ *((char16_t*)aDest)= mBOM;
+ mBOM=0;
+ *aDestLength = 2;
+ return NS_OK;
+ } else {
+ *aDestLength = 0;
+ return NS_OK; // xxx should be error
+ }
+ } else {
+ *aDestLength = 0;
+ return NS_OK;
+ }
+}
+
+NS_IMETHODIMP nsUnicodeToUTF16BE::Reset()
+{
+ mBOM = 0;
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsUnicodeToUTF16BE::SetOutputErrorBehavior(int32_t aBehavior,
+ nsIUnicharEncoder * aEncoder, char16_t aChar)
+{
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsUnicodeToUTF16BE::CopyData(char* aDest, const char16_t* aSrc, int32_t aLen )
+{
+ mozilla::NativeEndian::copyAndSwapToBigEndian(aDest, aSrc, aLen);
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsUnicodeToUTF16LE::CopyData(char* aDest, const char16_t* aSrc, int32_t aLen )
+{
+ mozilla::NativeEndian::copyAndSwapToLittleEndian(aDest, aSrc, aLen);
+ return NS_OK;
+}