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Diffstat (limited to 'include/rapidjson/istreamwrapper.h')
-rw-r--r-- | include/rapidjson/istreamwrapper.h | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/include/rapidjson/istreamwrapper.h b/include/rapidjson/istreamwrapper.h deleted file mode 100644 index c4950b9..0000000 --- a/include/rapidjson/istreamwrapper.h +++ /dev/null @@ -1,128 +0,0 @@ -// 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_ISTREAMWRAPPER_H_ -#define RAPIDJSON_ISTREAMWRAPPER_H_ - -#include "stream.h" -#include <iosfwd> -#include <ios> - -#ifdef __clang__ -RAPIDJSON_DIAG_PUSH -RAPIDJSON_DIAG_OFF(padded) -#elif defined(_MSC_VER) -RAPIDJSON_DIAG_PUSH -RAPIDJSON_DIAG_OFF(4351) // new behavior: elements of array 'array' will be default initialized -#endif - -RAPIDJSON_NAMESPACE_BEGIN - -//! Wrapper of \c std::basic_istream into RapidJSON's Stream concept. -/*! - The classes can be wrapped including but not limited to: - - - \c std::istringstream - - \c std::stringstream - - \c std::wistringstream - - \c std::wstringstream - - \c std::ifstream - - \c std::fstream - - \c std::wifstream - - \c std::wfstream - - \tparam StreamType Class derived from \c std::basic_istream. -*/ - -template <typename StreamType> -class BasicIStreamWrapper { -public: - typedef typename StreamType::char_type Ch; - - //! Constructor. - /*! - \param stream stream opened for read. - */ - BasicIStreamWrapper(StreamType &stream) : stream_(stream), buffer_(peekBuffer_), bufferSize_(4), bufferLast_(0), current_(buffer_), readCount_(0), count_(0), eof_(false) { - Read(); - } - - //! Constructor. - /*! - \param stream stream opened for read. - \param buffer user-supplied buffer. - \param bufferSize size of buffer in bytes. Must >=4 bytes. - */ - BasicIStreamWrapper(StreamType &stream, char* buffer, size_t bufferSize) : stream_(stream), buffer_(buffer), bufferSize_(bufferSize), bufferLast_(0), current_(buffer_), readCount_(0), count_(0), eof_(false) { - 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 - !eof_ <= bufferLast_) ? current_ : 0; - } - -private: - BasicIStreamWrapper(); - BasicIStreamWrapper(const BasicIStreamWrapper&); - BasicIStreamWrapper& operator=(const BasicIStreamWrapper&); - - void Read() { - if (current_ < bufferLast_) - ++current_; - else if (!eof_) { - count_ += readCount_; - readCount_ = bufferSize_; - bufferLast_ = buffer_ + readCount_ - 1; - current_ = buffer_; - - if (!stream_.read(buffer_, static_cast<std::streamsize>(bufferSize_))) { - readCount_ = static_cast<size_t>(stream_.gcount()); - *(bufferLast_ = buffer_ + readCount_) = '\0'; - eof_ = true; - } - } - } - - StreamType &stream_; - Ch peekBuffer_[4], *buffer_; - size_t bufferSize_; - Ch *bufferLast_; - Ch *current_; - size_t readCount_; - size_t count_; //!< Number of characters read - bool eof_; -}; - -typedef BasicIStreamWrapper<std::istream> IStreamWrapper; -typedef BasicIStreamWrapper<std::wistream> WIStreamWrapper; - -#if defined(__clang__) || defined(_MSC_VER) -RAPIDJSON_DIAG_POP -#endif - -RAPIDJSON_NAMESPACE_END - -#endif // RAPIDJSON_ISTREAMWRAPPER_H_ |