| /** |
| * Copyright 2010 Google Inc. |
| * |
| * 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. |
| */ |
| #ifndef MEMUTIL_H_ |
| #define MEMUTIL_H_ |
| |
| #include "strings/ascii_ctype.h" |
| |
| // The ""'s catch people who don't pass in a literal for "str" |
| #define strliterallen(str) (sizeof("" str "")-1) |
| |
| inline int memcasecmp(const char *s1, const char *s2, size_t len) { |
| const unsigned char *us1 = reinterpret_cast<const unsigned char *>(s1); |
| const unsigned char *us2 = reinterpret_cast<const unsigned char *>(s2); |
| |
| for ( int i = 0; i < len; i++ ) { |
| const int diff = |
| static_cast<int>(static_cast<unsigned char>(ascii_tolower(us1[i]))) - |
| static_cast<int>(static_cast<unsigned char>(ascii_tolower(us2[i]))); |
| if (diff != 0) return diff; |
| } |
| return 0; |
| } |
| |
| #define memcaseis(str, len, literal) \ |
| ( (((len) == strliterallen(literal)) \ |
| && memcasecmp(str, literal, strliterallen(literal)) == 0) ) |
| |
| #define memis(str, len, literal) \ |
| ( (((len) == strliterallen(literal)) \ |
| && memcmp(str, literal, strliterallen(literal)) == 0) ) |
| |
| |
| #endif // MEMUTIL_H_ |