diff options
Diffstat (limited to 'api/logic/GZip.cpp')
| -rw-r--r-- | api/logic/GZip.cpp | 208 |
1 files changed, 104 insertions, 104 deletions
diff --git a/api/logic/GZip.cpp b/api/logic/GZip.cpp index 38605df6..0368c32d 100644 --- a/api/logic/GZip.cpp +++ b/api/logic/GZip.cpp @@ -4,112 +4,112 @@ bool GZip::unzip(const QByteArray &compressedBytes, QByteArray &uncompressedBytes) { - if (compressedBytes.size() == 0) - { - uncompressedBytes = compressedBytes; - return true; - } - - unsigned uncompLength = compressedBytes.size(); - uncompressedBytes.clear(); - uncompressedBytes.resize(uncompLength); - - z_stream strm; - memset(&strm, 0, sizeof(strm)); - strm.next_in = (Bytef *)compressedBytes.data(); - strm.avail_in = compressedBytes.size(); - - bool done = false; - - if (inflateInit2(&strm, (16 + MAX_WBITS)) != Z_OK) - { - return false; - } - - int err = Z_OK; - - while (!done) - { - // If our output buffer is too small - if (strm.total_out >= uncompLength) - { - uncompressedBytes.resize(uncompLength * 2); - uncompLength *= 2; - } - - strm.next_out = (Bytef *)(uncompressedBytes.data() + strm.total_out); - strm.avail_out = uncompLength - strm.total_out; - - // Inflate another chunk. - err = inflate(&strm, Z_SYNC_FLUSH); - if (err == Z_STREAM_END) - done = true; - else if (err != Z_OK) - { - break; - } - } - - if (inflateEnd(&strm) != Z_OK || !done) - { - return false; - } - - uncompressedBytes.resize(strm.total_out); - return true; + if (compressedBytes.size() == 0) + { + uncompressedBytes = compressedBytes; + return true; + } + + unsigned uncompLength = compressedBytes.size(); + uncompressedBytes.clear(); + uncompressedBytes.resize(uncompLength); + + z_stream strm; + memset(&strm, 0, sizeof(strm)); + strm.next_in = (Bytef *)compressedBytes.data(); + strm.avail_in = compressedBytes.size(); + + bool done = false; + + if (inflateInit2(&strm, (16 + MAX_WBITS)) != Z_OK) + { + return false; + } + + int err = Z_OK; + + while (!done) + { + // If our output buffer is too small + if (strm.total_out >= uncompLength) + { + uncompressedBytes.resize(uncompLength * 2); + uncompLength *= 2; + } + + strm.next_out = (Bytef *)(uncompressedBytes.data() + strm.total_out); + strm.avail_out = uncompLength - strm.total_out; + + // Inflate another chunk. + err = inflate(&strm, Z_SYNC_FLUSH); + if (err == Z_STREAM_END) + done = true; + else if (err != Z_OK) + { + break; + } + } + + if (inflateEnd(&strm) != Z_OK || !done) + { + return false; + } + + uncompressedBytes.resize(strm.total_out); + return true; } bool GZip::zip(const QByteArray &uncompressedBytes, QByteArray &compressedBytes) { - if (uncompressedBytes.size() == 0) - { - compressedBytes = uncompressedBytes; - return true; - } - - unsigned compLength = std::min(uncompressedBytes.size(), 16); - compressedBytes.clear(); - compressedBytes.resize(compLength); - - z_stream zs; - memset(&zs, 0, sizeof(zs)); - - if (deflateInit2(&zs, Z_DEFAULT_COMPRESSION, Z_DEFLATED, (16 + MAX_WBITS), 8, Z_DEFAULT_STRATEGY) != Z_OK) - { - return false; - } - - zs.next_in = (Bytef*)uncompressedBytes.data(); - zs.avail_in = uncompressedBytes.size(); - - int ret; - compressedBytes.resize(uncompressedBytes.size()); - - unsigned offset = 0; - unsigned temp = 0; - do - { - auto remaining = compressedBytes.size() - offset; - if(remaining < 1) - { - compressedBytes.resize(compressedBytes.size() * 2); - } - zs.next_out = (Bytef *) (compressedBytes.data() + offset); - temp = zs.avail_out = compressedBytes.size() - offset; - ret = deflate(&zs, Z_FINISH); - offset += temp - zs.avail_out; - } while (ret == Z_OK); - - compressedBytes.resize(offset); - - if (deflateEnd(&zs) != Z_OK) - { - return false; - } - - if (ret != Z_STREAM_END) - { - return false; - } - return true; + if (uncompressedBytes.size() == 0) + { + compressedBytes = uncompressedBytes; + return true; + } + + unsigned compLength = std::min(uncompressedBytes.size(), 16); + compressedBytes.clear(); + compressedBytes.resize(compLength); + + z_stream zs; + memset(&zs, 0, sizeof(zs)); + + if (deflateInit2(&zs, Z_DEFAULT_COMPRESSION, Z_DEFLATED, (16 + MAX_WBITS), 8, Z_DEFAULT_STRATEGY) != Z_OK) + { + return false; + } + + zs.next_in = (Bytef*)uncompressedBytes.data(); + zs.avail_in = uncompressedBytes.size(); + + int ret; + compressedBytes.resize(uncompressedBytes.size()); + + unsigned offset = 0; + unsigned temp = 0; + do + { + auto remaining = compressedBytes.size() - offset; + if(remaining < 1) + { + compressedBytes.resize(compressedBytes.size() * 2); + } + zs.next_out = (Bytef *) (compressedBytes.data() + offset); + temp = zs.avail_out = compressedBytes.size() - offset; + ret = deflate(&zs, Z_FINISH); + offset += temp - zs.avail_out; + } while (ret == Z_OK); + + compressedBytes.resize(offset); + + if (deflateEnd(&zs) != Z_OK) + { + return false; + } + + if (ret != Z_STREAM_END) + { + return false; + } + return true; }
\ No newline at end of file |