Initial commit of sync engine code to browser/sync....

chrome/browser/sync/util/character_set_converters-linux.cc

+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/sync/util/character_set_converters.h"
+
+#include <string>
+
+using std::string;
+
+namespace browser_sync {
+
+// Converts input_string to UTF8 and appends the result into output_string.
+void AppendPathStringToUTF8(const PathChar *wide, int size,
+                            string* output_string) {
+  output_string->append(wide, size);
+}
+
+bool AppendUTF8ToPathString(const char* utf8, size_t size,
+                            PathString* output_string) {
+  output_string->append(utf8, size);
+  return true;
+}
+
+void TrimPathStringToValidCharacter(PathString* string) {
+  // Constants from http://en.wikipedia.org/wiki/UTF-8
+  CHECK(string);
+  if (string->empty())
+    return;
+  if (0 == (string->at(string->length() - 1) & 0x080))
+    return;
+  int partial_enc_bytes = 0;
+  for (partial_enc_bytes = 0 ; true ; ++partial_enc_bytes) {
+    if (4 == partial_enc_bytes || partial_enc_bytes == string->length()) {
+      // original string was broken, garbage in, garbage out.
+      return;
+    }
+    PathChar c = string->at(string->length() - 1 - partial_enc_bytes);
+    if ((c & 0x0c0) == 0x080)  // utf continuation char;
+      continue;
+    if ((c & 0x0e0) == 0x0e0)  // 2-byte encoded char.
+      if (1 == partial_enc_bytes)
+        return;
+      else
+        break;
+    if ((c & 0x0f0) == 0xc0)  // 3-byte encoded char.
+      if (2 == partial_enc_bytes)
+        return;
+      else
+        break;
+    if ((c & 0x0f8) == 0x0f0)  // 4-byte encoded char.
+      if (3 == partial_enc_bytes)
+        return;
+      else
+        break;
+  }
+  string->resize(string->length() - 1 - partial_enc_bytes);
+}
+
+}  // namespace browser_sync