| // compat.h |
| // |
| // 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. |
| // |
| // Author: riley@google.com (Michael Riley) |
| // |
| // \file |
| // Google compatibility declarations and inline definitions. |
| |
| #ifndef FST_LIB_COMPAT_H__ |
| #define FST_LIB_COMPAT_H__ |
| |
| #include <dlfcn.h> |
| |
| #include <climits> |
| #include <cstdlib> |
| #include <cstring> |
| #include <iostream> |
| #include <string> |
| #include <vector> |
| |
| // Makes copy constructor and operator= private |
| #define DISALLOW_COPY_AND_ASSIGN(type) \ |
| type(const type&); \ |
| void operator=(const type&) |
| |
| #include <fst/config.h> |
| #include <fst/types.h> |
| #include <fst/lock.h> |
| #include <fst/flags.h> |
| #include <fst/log.h> |
| |
| #ifdef HAVE_ICU |
| #include <fst/icu.h> |
| #endif |
| |
| using std::cin; |
| using std::cout; |
| using std::cerr; |
| using std::endl; |
| using std::string; |
| |
| void FailedNewHandler(); |
| |
| namespace fst { |
| |
| using namespace std; |
| |
| void SplitToVector(char *line, const char *delim, |
| std::vector<char *> *vec, bool omit_empty_strings); |
| |
| // Downcasting |
| template<typename To, typename From> |
| inline To down_cast(From* f) { |
| return static_cast<To>(f); |
| } |
| |
| // Bitcasting |
| template <class Dest, class Source> |
| inline Dest bit_cast(const Source& source) { |
| // Compile time assertion: sizeof(Dest) == sizeof(Source) |
| // A compile error here means your Dest and Source have different sizes. |
| typedef char VerifySizesAreEqual [sizeof(Dest) == sizeof(Source) ? 1 : |
| -1]; |
| Dest dest; |
| memcpy(&dest, &source, sizeof(dest)); |
| return dest; |
| } |
| |
| // Check sums |
| class CheckSummer { |
| public: |
| CheckSummer() : count_(0) { |
| check_sum_.resize(kCheckSumLength, '\0'); |
| } |
| |
| void Reset() { |
| count_ = 0; |
| for (int i = 0; i < kCheckSumLength; ++i) |
| check_sum_[0] = '\0'; |
| } |
| |
| void Update(void const *data, int size) { |
| const char *p = reinterpret_cast<const char *>(data); |
| for (int i = 0; i < size; ++i) |
| check_sum_[(count_++) % kCheckSumLength] ^= p[i]; |
| } |
| |
| void Update(string const &data) { |
| for (int i = 0; i < data.size(); ++i) |
| check_sum_[(count_++) % kCheckSumLength] ^= data[i]; |
| } |
| |
| string Digest() { |
| return check_sum_; |
| } |
| |
| private: |
| static const int kCheckSumLength = 32; |
| int count_; |
| string check_sum_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CheckSummer); |
| }; |
| |
| // Define the UTF8 string conversion function to throw an error |
| // when the ICU Library is missing or disabled. |
| #ifndef HAVE_ICU |
| |
| template <class Label> |
| bool UTF8StringToLabels(const string&, std::vector<Label>*) { |
| LOG(ERROR) << "UTF8StringToLabels: ICU Library required for UTF8 handling"; |
| return false; |
| } |
| |
| template <class Label> |
| bool LabelsToUTF8String(const std::vector<Label>&, string*) { |
| LOG(ERROR) << "LabelsToUTF8String: ICU Library required for UTF8 handling"; |
| return false; |
| } |
| |
| #endif // HAVE_ICU |
| |
| } // namespace fst |
| |
| |
| // Define missing hash functions if needed |
| #ifndef HAVE_STD__TR1__HASH_LONG_LONG_UNSIGNED_ |
| namespace std { |
| namespace tr1 { |
| |
| template <class T> class hash; |
| |
| template<> struct hash<uint64> { |
| size_t operator()(uint64 x) const { return x; } |
| }; |
| |
| } |
| } |
| #endif // HAVE_STD__TR1__HASH_LONG_LONG_UNSIGNED_ |
| |
| #endif // FST_LIB_COMPAT_H__ |