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Diffstat (limited to '')
| -rw-r--r-- | src/StringUtils.cpp | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/src/StringUtils.cpp b/src/StringUtils.cpp index 5c6b99d88..8d2352331 100644 --- a/src/StringUtils.cpp +++ b/src/StringUtils.cpp @@ -765,6 +765,54 @@ AString Base64Decode(const AString & a_Base64String) +AString Base64Encode(const AString & a_Input) +{ + static const char BASE64[64] = { + 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P', + 'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f', + 'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v', + 'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/' + }; + + std::string output; + output.resize(((a_Input.size() + 2) / 3) * 4); + + size_t output_index = 0; + size_t size_full24 = (a_Input.size() / 3) * 3; + + for (size_t i = 0; i < size_full24; i += 3) + { + output[output_index++] = BASE64[(unsigned char)a_Input[i] >> 2]; + output[output_index++] = BASE64[((unsigned char)a_Input[i] << 4 | (unsigned char)a_Input[i + 1] >> 4) & 63]; + output[output_index++] = BASE64[((unsigned char)a_Input[i + 1] << 2 | (unsigned char)a_Input[i + 2] >> 6) & 63]; + output[output_index++] = BASE64[(unsigned char)a_Input[i + 2] & 63]; + } + + if (size_full24 < a_Input.size()) + { + output[output_index++] = BASE64[(unsigned char)a_Input[size_full24] >> 2]; + if (size_full24 + 1 == a_Input.size()) + { + output[output_index++] = BASE64[((unsigned char)a_Input[size_full24] << 4) & 63]; + output[output_index++] = '='; + } + else + { + output[output_index++] = BASE64[((unsigned char)a_Input[size_full24] << 4 | (unsigned char)a_Input[size_full24 + 1] >> 4) & 63]; + output[output_index++] = BASE64[((unsigned char)a_Input[size_full24 + 1] << 2) & 63]; + } + + output[output_index++] = '='; + } + assert(output_index == output.size()); + + return output; +} + + + + + short GetBEShort(const char * a_Mem) { return (((short)a_Mem[0]) << 8) | a_Mem[1]; |