Don Gagne
5 years ago
committed by
GitHub
19 changed files with 25445 additions and 103 deletions
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/****************************************************************************
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* |
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* (c) 2009-2020 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
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* |
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* QGroundControl is licensed according to the terms in the file |
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* COPYING.md in the root of the source code directory. |
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* |
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****************************************************************************/ |
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#include "QGCZlib.h" |
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#include <QFile> |
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#include <QDir> |
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#include <QtDebug> |
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#include "zlib.h" |
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bool QGCZlib::inflateGzipFile(const QString& gzippedFileName, const QString& decompressedFilename) |
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{ |
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bool success = true; |
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int ret; |
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const int cBuffer = 1024 * 5; |
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unsigned char inputBuffer[cBuffer]; |
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unsigned char outputBuffer[cBuffer]; |
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z_stream strm; |
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QFile inputFile(gzippedFileName); |
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if (!inputFile.open(QIODevice::ReadOnly)) { |
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qWarning() << "QGCZlib::inflateGzipFile: open input file failed" << gzippedFileName << inputFile.errorString(); |
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return false; |
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} |
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QFile outputFile(decompressedFilename); |
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if (!outputFile.open(QIODevice::WriteOnly | QIODevice::Truncate)) { |
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qWarning() << "QGCZlib::inflateGzipFile: open input file failed" << outputFile.fileName() << outputFile.errorString(); |
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return false; |
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} |
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strm.zalloc = nullptr; |
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strm.zfree = nullptr; |
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strm.opaque = nullptr; |
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strm.avail_in = 0; |
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strm.next_in = nullptr; |
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ret = inflateInit2(&strm, 16+MAX_WBITS); |
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if (ret != Z_OK) { |
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qWarning() << "QGCZlib::inflateGzipFile: inflateInit2 failed:" << ret; |
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goto Error; |
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} |
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do { |
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strm.avail_in = static_cast<unsigned>(inputFile.read((char*)inputBuffer, cBuffer)); |
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if (strm.avail_in == 0) { |
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break; |
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} |
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strm.next_in = inputBuffer; |
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do { |
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strm.avail_out = cBuffer; |
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strm.next_out = outputBuffer; |
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ret = inflate(&strm, Z_NO_FLUSH); |
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if (ret != Z_OK && ret != Z_STREAM_END) { |
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qWarning() << "QGCZlib::inflateGzipFile: inflate failed:" << ret; |
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goto Error; |
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} |
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unsigned cBytesInflated = cBuffer - strm.avail_out; |
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qint64 cBytesWritten = outputFile.write((char*)outputBuffer, static_cast<int>(cBytesInflated)); |
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if (cBytesWritten != cBytesInflated) { |
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qWarning() << "QGCZlib::inflateGzipFile: output file write failed:" << outputFile.fileName() << outputFile.errorString(); |
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goto Error; |
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} |
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} while (strm.avail_out == 0); |
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} while (ret != Z_STREAM_END); |
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Out: |
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inflateEnd(&strm); |
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return success; |
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Error: |
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success = false; |
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goto Out; |
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} |
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@ -0,0 +1,21 @@
@@ -0,0 +1,21 @@
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/****************************************************************************
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* |
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* (c) 2009-2020 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
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* |
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* QGroundControl is licensed according to the terms in the file |
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* COPYING.md in the root of the source code directory. |
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* |
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****************************************************************************/ |
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#pragma once |
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#include <QString> |
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class QGCZlib |
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{ |
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public: |
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/// Decompresses the specified file to the specified directory
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/// @param gzipFilename Fully qualified path to gzip file
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/// @param decompressedFilename Fully qualified path to for file to decompress to
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static bool inflateGzipFile(const QString& gzippedFileName, const QString& decompressedFilename); |
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}; |
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