diff options
Diffstat (limited to 'external_libs/cpp/yaml-cpp/src/binary.cpp')
-rwxr-xr-x | external_libs/cpp/yaml-cpp/src/binary.cpp | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/external_libs/cpp/yaml-cpp/src/binary.cpp b/external_libs/cpp/yaml-cpp/src/binary.cpp new file mode 100755 index 00000000..589eb089 --- /dev/null +++ b/external_libs/cpp/yaml-cpp/src/binary.cpp @@ -0,0 +1,102 @@ +#include "yaml-cpp/binary.h" +#include "yaml-cpp/node.h" + +namespace YAML +{ + static const char encoding[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; + + std::string EncodeBase64(const unsigned char *data, std::size_t size) + { + const char PAD = '='; + + std::string ret; + ret.resize(4 * size / 3 + 3); + char *out = &ret[0]; + + std::size_t chunks = size / 3; + std::size_t remainder = size % 3; + + for(std::size_t i=0;i<chunks;i++, data += 3) { + *out++ = encoding[data[0] >> 2]; + *out++ = encoding[((data[0] & 0x3) << 4) | (data[1] >> 4)]; + *out++ = encoding[((data[1] & 0xf) << 2) | (data[2] >> 6)]; + *out++ = encoding[data[2] & 0x3f]; + } + + switch(remainder) { + case 0: + break; + case 1: + *out++ = encoding[data[0] >> 2]; + *out++ = encoding[((data[0] & 0x3) << 4)]; + *out++ = PAD; + *out++ = PAD; + break; + case 2: + *out++ = encoding[data[0] >> 2]; + *out++ = encoding[((data[0] & 0x3) << 4) | (data[1] >> 4)]; + *out++ = encoding[((data[1] & 0xf) << 2)]; + *out++ = PAD; + break; + } + + ret.resize(out - &ret[0]); + return ret; + } + + static const unsigned char decoding[] = { + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255, 62,255,255,255, 63, + 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,255,255,255, 0,255,255, + 255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, + 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,255,255,255,255,255, + 255, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, + 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + }; + + std::vector<unsigned char> DecodeBase64(const std::string& input) + { + typedef std::vector<unsigned char> ret_type; + if(input.empty()) + return ret_type(); + + ret_type ret(3 * input.size() / 4 + 1); + unsigned char *out = &ret[0]; + + unsigned value = 0; + for(std::size_t i=0;i<input.size();i++) { + unsigned char d = decoding[static_cast<unsigned>(input[i])]; + if(d == 255) + return ret_type(); + + value = (value << 6) | d; + if(i % 4 == 3) { + *out++ = value >> 16; + if(i > 0 && input[i - 1] != '=') + *out++ = value >> 8; + if(input[i] != '=') + *out++ = value; + } + } + + ret.resize(out - &ret[0]); + return ret; + } + + void operator >> (const Node& node, Binary& binary) + { + std::string scalar; + node.GetScalar(scalar); + std::vector<unsigned char> data = DecodeBase64(scalar); + binary.swap(data); + } +} |