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author | Ed Tanous <ed.tanous@intel.com> | 2017-03-04 01:21:24 +0300 |
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committer | Ed Tanous <ed.tanous@intel.com> | 2017-03-04 01:21:24 +0300 |
commit | 9992332be956c173199257b55e592ec2d2331e3a (patch) | |
tree | 9b7b17d8c92f7ad2bf32404ff719961a5150d0af /src/base64.cpp | |
parent | 38bdb986b9133f5d728cc44b3d82321ce132eee3 (diff) | |
download | bmcweb-9992332be956c173199257b55e592ec2d2331e3a.tar.xz |
clang-format
Diffstat (limited to 'src/base64.cpp')
-rw-r--r-- | src/base64.cpp | 143 |
1 files changed, 64 insertions, 79 deletions
diff --git a/src/base64.cpp b/src/base64.cpp index 259288757b..001a467899 100644 --- a/src/base64.cpp +++ b/src/base64.cpp @@ -1,81 +1,67 @@ #include <base64.hpp> #include <cassert> -namespace base64 -{ -bool base64_encode(const gsl::cstring_span<> &input, std::string &output) -{ - static const char encoding_data[] = - "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; - - unsigned int input_length = input.size(); - - // allocate space for output string - output.clear(); - output.reserve(((input_length + 2) / 3) * 4); - - // for each 3-bytes sequence from the input, extract 4 6-bits sequences and - // encode using - // encoding_data lookup table. - // if input do not contains enough chars to complete 3-byte sequence,use pad - // char '=' - for (unsigned int i = 0; i < input_length; i++) { - int base64code0 = 0; - int base64code1 = 0; - int base64code2 = 0; - int base64code3 = 0; - - base64code0 = (input[i] >> 2) & 0x3f; // 1-byte 6 bits - output += encoding_data[base64code0]; - base64code1 = (input[i] << 4) & 0x3f; // 1-byte 2 bits + - - if (++i < input_length) { - base64code1 |= (input[i] >> 4) & 0x0f; // 2-byte 4 bits - output += encoding_data[base64code1]; - base64code2 = (input[i] << 2) & 0x3f; // 2-byte 4 bits + - - if (++i < input_length) { - base64code2 |= (input[i] >> 6) & 0x03; // 3-byte 2 bits - base64code3 = input[i] & 0x3f; // 3-byte 6 bits - output += encoding_data[base64code2]; - output += encoding_data[base64code3]; - } else { - output += encoding_data[base64code2]; - output += '='; - } - } else { - output += encoding_data[base64code1]; - output += '='; - output += '='; - } +namespace base64 { +bool base64_encode(const gsl::cstring_span<> &input, std::string &output) { + static const char encoding_data[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; + + unsigned int input_length = input.size(); + + // allocate space for output string + output.clear(); + output.reserve(((input_length + 2) / 3) * 4); + + // for each 3-bytes sequence from the input, extract 4 6-bits sequences and + // encode using + // encoding_data lookup table. + // if input do not contains enough chars to complete 3-byte sequence,use pad + // char '=' + for (unsigned int i = 0; i < input_length; i++) { + int base64code0 = 0; + int base64code1 = 0; + int base64code2 = 0; + int base64code3 = 0; + + base64code0 = (input[i] >> 2) & 0x3f; // 1-byte 6 bits + output += encoding_data[base64code0]; + base64code1 = (input[i] << 4) & 0x3f; // 1-byte 2 bits + + + if (++i < input_length) { + base64code1 |= (input[i] >> 4) & 0x0f; // 2-byte 4 bits + output += encoding_data[base64code1]; + base64code2 = (input[i] << 2) & 0x3f; // 2-byte 4 bits + + + if (++i < input_length) { + base64code2 |= (input[i] >> 6) & 0x03; // 3-byte 2 bits + base64code3 = input[i] & 0x3f; // 3-byte 6 bits + output += encoding_data[base64code2]; + output += encoding_data[base64code3]; + } else { + output += encoding_data[base64code2]; + output += '='; + } + } else { + output += encoding_data[base64code1]; + output += '='; + output += '='; } + } - return true; + return true; } - -bool base64_decode(const gsl::cstring_span<> &input, std::string &output) -{ +bool base64_decode(const gsl::cstring_span<> &input, std::string &output) { static const char nop = -1; static const char decoding_data[] = { - nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, - nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, - nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, 62, nop, - nop, nop, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, nop, nop, - nop, nop, nop, nop, nop, 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, nop, nop, nop, nop, nop, nop, 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, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, - nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, - nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, - nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, - nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, - nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, - nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, - nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, - nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, - nop}; + nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, + nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, 62, nop, nop, nop, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, + nop, nop, nop, nop, nop, nop, nop, 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, nop, nop, nop, nop, nop, nop, 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, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, + nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, + nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, + nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, + nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop, nop}; unsigned int input_length = input.size(); @@ -90,29 +76,29 @@ bool base64_decode(const gsl::cstring_span<> &input, std::string &output) for (unsigned int i = 0; i < input_length; i++) { char base64code0; char base64code1; - char base64code2 = 0; // initialized to 0 to suppress warnings + char base64code2 = 0; // initialized to 0 to suppress warnings char base64code3; base64code0 = decoding_data[static_cast<int>(input[i])]; - if (base64code0 == nop) // non base64 character + if (base64code0 == nop) // non base64 character return false; - if (!(++i < input_length)) // we need at least two input bytes for first - // byte output + if (!(++i < input_length)) // we need at least two input bytes for first + // byte output return false; base64code1 = decoding_data[static_cast<int>(input[i])]; - if (base64code1 == nop) // non base64 character + if (base64code1 == nop) // non base64 character return false; output += ((base64code0 << 2) | ((base64code1 >> 4) & 0x3)); if (++i < input_length) { char c = input[i]; - if (c == '=') { // padding , end of input + if (c == '=') { // padding , end of input assert((base64code1 & 0x0f) == 0); return true; } base64code2 = decoding_data[static_cast<int>(input[i])]; - if (base64code2 == nop) // non base64 character + if (base64code2 == nop) // non base64 character return false; output += ((base64code1 << 4) & 0xf0) | ((base64code2 >> 2) & 0x0f); @@ -120,12 +106,12 @@ bool base64_decode(const gsl::cstring_span<> &input, std::string &output) if (++i < input_length) { char c = input[i]; - if (c == '=') { // padding , end of input + if (c == '=') { // padding , end of input assert((base64code2 & 0x03) == 0); return true; } base64code3 = decoding_data[static_cast<int>(input[i])]; - if (base64code3 == nop) // non base64 character + if (base64code3 == nop) // non base64 character return false; output += (((base64code2 << 6) & 0xc0) | base64code3); @@ -134,5 +120,4 @@ bool base64_decode(const gsl::cstring_span<> &input, std::string &output) return true; } - }
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