diff options
Diffstat (limited to 'NorthstarDedicatedTest/include/protobuf/compiler/zip_writer.cc')
| -rw-r--r-- | NorthstarDedicatedTest/include/protobuf/compiler/zip_writer.cc | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/NorthstarDedicatedTest/include/protobuf/compiler/zip_writer.cc b/NorthstarDedicatedTest/include/protobuf/compiler/zip_writer.cc new file mode 100644 index 00000000..b2361dae --- /dev/null +++ b/NorthstarDedicatedTest/include/protobuf/compiler/zip_writer.cc @@ -0,0 +1,195 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// https://developers.google.com/protocol-buffers/ +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// Author: ambrose@google.com (Ambrose Feinstein), +// kenton@google.com (Kenton Varda) +// +// Based on http://www.pkware.com/documents/casestudies/APPNOTE.TXT + +#include <compiler/zip_writer.h> + +#include <cstdint> + +#include <io/coded_stream.h> + +namespace google { +namespace protobuf { +namespace compiler { + +// January 1, 1980 as a DOS date. +// see https://msdn.microsoft.com/en-us/library/9kkf9tah.aspx +static const uint16_t kDosEpoch = 1 << 5 | 1; + +static const uint32_t kCRC32Table[256] = { + 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, + 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, + 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, + 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, + 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, + 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, + 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, + 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, + 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, + 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, + 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, + 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, + 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, + 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, + 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, + 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, + 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, + 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, + 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, + 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, + 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, + 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, + 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, + 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, + 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, + 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, + 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, + 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, + 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, + 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, + 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, + 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, + 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, + 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, + 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, + 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, + 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, + 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, + 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, + 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, + 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, + 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, + 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d}; + +static uint32_t ComputeCRC32(const std::string& buf) { + uint32_t x = ~0U; + for (int i = 0; i < buf.size(); ++i) { + unsigned char c = buf[i]; + x = kCRC32Table[(x ^ c) & 0xff] ^ (x >> 8); + } + return ~x; +} + +static void WriteShort(io::CodedOutputStream* out, uint16_t val) { + uint8_t p[2]; + p[0] = static_cast<uint8_t>(val); + p[1] = static_cast<uint8_t>(val >> 8); + out->WriteRaw(p, 2); +} + +ZipWriter::ZipWriter(io::ZeroCopyOutputStream* raw_output) + : raw_output_(raw_output) {} +ZipWriter::~ZipWriter() {} + +bool ZipWriter::Write(const std::string& filename, + const std::string& contents) { + FileInfo info; + + info.name = filename; + uint16_t filename_size = filename.size(); + info.offset = raw_output_->ByteCount(); + info.size = contents.size(); + info.crc32 = ComputeCRC32(contents); + + files_.push_back(info); + + // write file header + io::CodedOutputStream output(raw_output_); + output.WriteLittleEndian32(0x04034b50); // magic + WriteShort(&output, 10); // version needed to extract + WriteShort(&output, 0); // flags + WriteShort(&output, 0); // compression method: stored + WriteShort(&output, 0); // last modified time + WriteShort(&output, kDosEpoch); // last modified date + output.WriteLittleEndian32(info.crc32); // crc-32 + output.WriteLittleEndian32(info.size); // compressed size + output.WriteLittleEndian32(info.size); // uncompressed size + WriteShort(&output, filename_size); // file name length + WriteShort(&output, 0); // extra field length + output.WriteString(filename); // file name + output.WriteString(contents); // file data + + return !output.HadError(); +} + +bool ZipWriter::WriteDirectory() { + uint16_t num_entries = files_.size(); + uint32_t dir_ofs = raw_output_->ByteCount(); + + // write central directory + io::CodedOutputStream output(raw_output_); + for (int i = 0; i < num_entries; ++i) { + const std::string& filename = files_[i].name; + uint16_t filename_size = filename.size(); + uint32_t crc32 = files_[i].crc32; + uint32_t size = files_[i].size; + uint32_t offset = files_[i].offset; + + output.WriteLittleEndian32(0x02014b50); // magic + WriteShort(&output, 10); // version made by + WriteShort(&output, 10); // version needed to extract + WriteShort(&output, 0); // flags + WriteShort(&output, 0); // compression method: stored + WriteShort(&output, 0); // last modified time + WriteShort(&output, kDosEpoch); // last modified date + output.WriteLittleEndian32(crc32); // crc-32 + output.WriteLittleEndian32(size); // compressed size + output.WriteLittleEndian32(size); // uncompressed size + WriteShort(&output, filename_size); // file name length + WriteShort(&output, 0); // extra field length + WriteShort(&output, 0); // file comment length + WriteShort(&output, 0); // starting disk number + WriteShort(&output, 0); // internal file attributes + output.WriteLittleEndian32(0); // external file attributes + output.WriteLittleEndian32(offset); // local header offset + output.WriteString(filename); // file name + } + uint32_t dir_len = output.ByteCount(); + + // write end of central directory marker + output.WriteLittleEndian32(0x06054b50); // magic + WriteShort(&output, 0); // disk number + WriteShort(&output, 0); // disk with start of central directory + WriteShort(&output, num_entries); // central directory entries (this disk) + WriteShort(&output, num_entries); // central directory entries (total) + output.WriteLittleEndian32(dir_len); // central directory byte size + output.WriteLittleEndian32(dir_ofs); // central directory offset + WriteShort(&output, 0); // comment length + + return output.HadError(); +} + +} // namespace compiler +} // namespace protobuf +} // namespace google |