1fbf6d3962
INT64_MIN was causing problems ('not declared'), because C99 requires some
C++-specific behavior, which C++11 prohibits...
Comments from clang's stdint implementation (http://clang.llvm.org/doxygen/stdint_8h_source.html):
// C99 7.18.3 Limits of other integer types
//
// Footnote 219, 220: C++ implementations should define these macros only when
// __STDC_LIMIT_MACROS is defined before <stdint.h> is included.
//
// Footnote 222: C++ implementations should define these macros only when
// __STDC_CONSTANT_MACROS is defined before <stdint.h> is included.
//
// C++11 [cstdint.syn]p2:
//
// The macros defined by <cstdint> are provided unconditionally. In particular,
// the symbols __STDC_LIMIT_MACROS and __STDC_CONSTANT_MACROS (mentioned in
// footnotes 219, 220, and 222 in the C standard) play no role in C++.
//
// C11 removed the problematic footnotes.
72 lines
1.5 KiB
C++
72 lines
1.5 KiB
C++
/*
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* =====================================================================
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* Version: 1.0
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* Created: 18.09.2012 10:20:47
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* Author: Miroslav Bendík
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* Company: LinuxOS.sk
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* =====================================================================
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*/
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#include <zlib.h>
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#include <cstdint>
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#include "ZlibDecompressor.h"
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ZlibDecompressor::ZlibDecompressor(const unsigned char *data, std::size_t size):
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m_data(data),
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m_seekPos(0),
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m_size(size)
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{
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}
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ZlibDecompressor::~ZlibDecompressor()
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{
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}
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void ZlibDecompressor::setSeekPos(std::size_t seekPos)
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{
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m_seekPos = seekPos;
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}
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std::size_t ZlibDecompressor::seekPos() const
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{
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return m_seekPos;
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}
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ustring ZlibDecompressor::decompress()
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{
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const unsigned char *data = m_data + m_seekPos;
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const std::size_t size = m_size - m_seekPos;
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ustring buffer;
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const size_t BUFSIZE = 128 * 1024;
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uint8_t temp_buffer[BUFSIZE];
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z_stream strm;
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strm.zalloc = Z_NULL;
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strm.zfree = Z_NULL;
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strm.opaque = Z_NULL;
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strm.next_in = Z_NULL;
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strm.avail_in = size;
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if (inflateInit(&strm) != Z_OK) {
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throw DecompressError(strm.msg);
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}
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strm.next_in = const_cast<unsigned char *>(data);
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int ret = 0;
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do {
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strm.avail_out = BUFSIZE;
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strm.next_out = temp_buffer;
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ret = inflate(&strm, Z_NO_FLUSH);
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buffer += ustring(reinterpret_cast<unsigned char *>(temp_buffer), BUFSIZE - strm.avail_out);
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} while (ret == Z_OK);
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if (ret != Z_STREAM_END) {
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throw DecompressError(strm.msg);
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}
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m_seekPos += strm.next_in - data;
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(void)inflateEnd(&strm);
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return buffer;
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}
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