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-rw-r--r--browser/components/translation/cld2/internal/fixunicodevalue.cc54
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diff --git a/browser/components/translation/cld2/internal/fixunicodevalue.cc b/browser/components/translation/cld2/internal/fixunicodevalue.cc
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+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//
+// Routine that maps a Unicode code point to an interchange-valid one
+//
+
+#include "fixunicodevalue.h"
+#include "integral_types.h"
+
+namespace CLD2 {
+
+// Guarantees that the resulting output value is interchange valid
+// 00-FF; map to spaces or MS CP1252
+// D800-DFFF; surrogates
+// FDD0-FDEF; non-characters
+// xxFFFE-xxFFFF; non-characters
+char32 FixUnicodeValue(char32 uv) {
+ uint32 uuv = static_cast<uint32>(uv);
+ if (uuv < 0x0100) {
+ return kMapFullMicrosoft1252OrSpace[uuv];
+ }
+ if (uuv < 0xD800) {
+ return uv;
+ }
+ if ((uuv & ~0x0F) == 0xFDD0) { // non-characters
+ return 0xFFFD;
+ }
+ if ((uuv & ~0x0F) == 0xFDE0) { // non-characters
+ return 0xFFFD;
+ }
+ if ((uuv & 0x00FFFE) == 0xFFFE) { // non-characters
+ return 0xFFFD;
+ }
+ if ((0xE000 <= uuv) && (uuv <= 0x10FFFF)) {
+ return uv;
+ }
+ // surrogates and negative and > 0x10FFFF all land here
+ return 0xFFFD;
+}
+
+} // End namespace CLD2
+