Initial commit

libs/utils/src/CString.cpp

@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#include <utils/CString.h>
+
+#include <utils/compiler.h>
+
+namespace utils {
+
+int StaticString::compare(const StaticString& rhs) const noexcept {
+    size_type lhs_size = size();
+    size_type rhs_size = rhs.size();
+    if (lhs_size < rhs_size) return -1;
+    if (lhs_size > rhs_size) return 1;
+    return strncmp(data(), rhs.data(), size());
+}
+
+// ------------------------------------------------------------------------------------------------
+
+UTILS_NOINLINE
+CString::CString(const char* cstr, size_type length) {
+    if (length && cstr) {
+        Data* p = (Data*)malloc(sizeof(Data) + length + 1);
+        p->length = length;
+        mCStr = (value_type*)(p + 1);
+        memcpy(mCStr, cstr, length + 1);
+    }
+}
+
+CString::CString(const char* cstr)
+        : CString(cstr, size_type(cstr ? strlen(cstr) : 0)) {
+}
+
+CString::CString(const CString& rhs)
+        : CString(rhs.c_str(), rhs.size()) {
+}
+
+CString& CString::operator=(const CString& rhs) {
+    if (this != &rhs) {
+        auto const p = mData ? mData - 1 : nullptr;
+        new(this) CString(rhs);
+        free(p);
+    }
+    return *this;
+}
+
+} // namespace utils