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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,88 +1,99 @@ | ||
| // Tencent is pleased to support the open source community by making RapidJSON available. | ||
| // | ||
| // Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved. | ||
| // | ||
| // Licensed under the MIT License (the "License"); you may not use this file except | ||
| // in compliance with the License. You may obtain a copy of the License at | ||
| // | ||
| // http://opensource.org/licenses/MIT | ||
| // | ||
| // 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 RAPIDJSON_FILEREADSTREAM_H_ | ||
| #define RAPIDJSON_FILEREADSTREAM_H_ | ||
|
|
||
| #include "rapidjson.h" | ||
| #include <cstdio> | ||
|
|
||
| RAPIDJSON_NAMESPACE_BEGIN | ||
|
|
||
| //! File byte stream for input using fread(). | ||
| /*! | ||
| \note implements Stream concept | ||
| */ | ||
| class FileReadStream { | ||
| public: | ||
| typedef char Ch; //!< Character type (byte). | ||
|
|
||
| //! Constructor. | ||
| /*! | ||
| \param fp File pointer opened for read. | ||
| \param buffer user-supplied buffer. | ||
| \param bufferSize size of buffer in bytes. Must >=4 bytes. | ||
| */ | ||
| FileReadStream(std::FILE* fp, char* buffer, size_t bufferSize) : fp_(fp), buffer_(buffer), bufferSize_(bufferSize), bufferLast_(0), current_(buffer_), readCount_(0), count_(0), eof_(false) { | ||
| RAPIDJSON_ASSERT(fp_ != 0); | ||
| RAPIDJSON_ASSERT(bufferSize >= 4); | ||
| Read(); | ||
| } | ||
|
|
||
| Ch Peek() const { return *current_; } | ||
| Ch Take() { Ch c = *current_; Read(); return c; } | ||
| size_t Tell() const { return count_ + static_cast<size_t>(current_ - buffer_); } | ||
|
|
||
| // Not implemented | ||
| void Put(Ch) { RAPIDJSON_ASSERT(false); } | ||
| void Flush() { RAPIDJSON_ASSERT(false); } | ||
| Ch* PutBegin() { RAPIDJSON_ASSERT(false); return 0; } | ||
| size_t PutEnd(Ch*) { RAPIDJSON_ASSERT(false); return 0; } | ||
|
|
||
| // For encoding detection only. | ||
| const Ch* Peek4() const { | ||
| return (current_ + 4 <= bufferLast_) ? current_ : 0; | ||
| } | ||
|
|
||
| private: | ||
| void Read() { | ||
| if (current_ < bufferLast_) | ||
| ++current_; | ||
| else if (!eof_) { | ||
| count_ += readCount_; | ||
| readCount_ = fread(buffer_, 1, bufferSize_, fp_); | ||
| bufferLast_ = buffer_ + readCount_ - 1; | ||
| current_ = buffer_; | ||
|
|
||
| if (readCount_ < bufferSize_) { | ||
| buffer_[readCount_] = '\0'; | ||
| ++bufferLast_; | ||
| eof_ = true; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| std::FILE* fp_; | ||
| Ch *buffer_; | ||
| size_t bufferSize_; | ||
| Ch *bufferLast_; | ||
| Ch *current_; | ||
| size_t readCount_; | ||
| size_t count_; //!< Number of characters read | ||
| bool eof_; | ||
| }; | ||
|
|
||
| RAPIDJSON_NAMESPACE_END | ||
|
|
||
| #endif // RAPIDJSON_FILESTREAM_H_ | ||
| // Tencent is pleased to support the open source community by making RapidJSON available. | ||
| // | ||
| // Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved. | ||
| // | ||
| // Licensed under the MIT License (the "License"); you may not use this file except | ||
| // in compliance with the License. You may obtain a copy of the License at | ||
| // | ||
| // http://opensource.org/licenses/MIT | ||
| // | ||
| // 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 RAPIDJSON_FILEREADSTREAM_H_ | ||
| #define RAPIDJSON_FILEREADSTREAM_H_ | ||
|
|
||
| #include "stream.h" | ||
| #include <cstdio> | ||
|
|
||
| #ifdef __clang__ | ||
| RAPIDJSON_DIAG_PUSH | ||
| RAPIDJSON_DIAG_OFF(padded) | ||
| RAPIDJSON_DIAG_OFF(unreachable-code) | ||
| RAPIDJSON_DIAG_OFF(missing-noreturn) | ||
| #endif | ||
|
|
||
| RAPIDJSON_NAMESPACE_BEGIN | ||
|
|
||
| //! File byte stream for input using fread(). | ||
| /*! | ||
| \note implements Stream concept | ||
| */ | ||
| class FileReadStream { | ||
| public: | ||
| typedef char Ch; //!< Character type (byte). | ||
|
|
||
| //! Constructor. | ||
| /*! | ||
| \param fp File pointer opened for read. | ||
| \param buffer user-supplied buffer. | ||
| \param bufferSize size of buffer in bytes. Must >=4 bytes. | ||
| */ | ||
| FileReadStream(std::FILE* fp, char* buffer, size_t bufferSize) : fp_(fp), buffer_(buffer), bufferSize_(bufferSize), bufferLast_(0), current_(buffer_), readCount_(0), count_(0), eof_(false) { | ||
| RAPIDJSON_ASSERT(fp_ != 0); | ||
| RAPIDJSON_ASSERT(bufferSize >= 4); | ||
| Read(); | ||
| } | ||
|
|
||
| Ch Peek() const { return *current_; } | ||
| Ch Take() { Ch c = *current_; Read(); return c; } | ||
| size_t Tell() const { return count_ + static_cast<size_t>(current_ - buffer_); } | ||
|
|
||
| // Not implemented | ||
| void Put(Ch) { RAPIDJSON_ASSERT(false); } | ||
| void Flush() { RAPIDJSON_ASSERT(false); } | ||
| Ch* PutBegin() { RAPIDJSON_ASSERT(false); return 0; } | ||
| size_t PutEnd(Ch*) { RAPIDJSON_ASSERT(false); return 0; } | ||
|
|
||
| // For encoding detection only. | ||
| const Ch* Peek4() const { | ||
| return (current_ + 4 <= bufferLast_) ? current_ : 0; | ||
| } | ||
|
|
||
| private: | ||
| void Read() { | ||
| if (current_ < bufferLast_) | ||
| ++current_; | ||
| else if (!eof_) { | ||
| count_ += readCount_; | ||
| readCount_ = fread(buffer_, 1, bufferSize_, fp_); | ||
| bufferLast_ = buffer_ + readCount_ - 1; | ||
| current_ = buffer_; | ||
|
|
||
| if (readCount_ < bufferSize_) { | ||
| buffer_[readCount_] = '\0'; | ||
| ++bufferLast_; | ||
| eof_ = true; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| std::FILE* fp_; | ||
| Ch *buffer_; | ||
| size_t bufferSize_; | ||
| Ch *bufferLast_; | ||
| Ch *current_; | ||
| size_t readCount_; | ||
| size_t count_; //!< Number of characters read | ||
| bool eof_; | ||
| }; | ||
|
|
||
| RAPIDJSON_NAMESPACE_END | ||
|
|
||
| #ifdef __clang__ | ||
| RAPIDJSON_DIAG_POP | ||
| #endif | ||
|
|
||
| #endif // RAPIDJSON_FILESTREAM_H_ |
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