7  * http://www.apache.org/licenses/LICENSE-2.0
28     // 2: the index do not exceed the range of encodedRes and form a complete four-character block  in Base64Encode()
29 …for (size_t i = 0, j = 0; i < encodedRes.length() - 2; i += TRANSFORMED_CHAR_NUM, j += TO_TRANSFOR…  in Base64Encode()
34         encodedRes[i + 1] = base64CharSet[(static_cast<unsigned int>(inputString[j]) & 0x03) << 4 |  in Base64Encode()
35             (static_cast<unsigned int>(inputString[j + 1]) & 0xf0) >> 4];  in Base64Encode()
37 …    encodedRes[i + 2] = base64CharSet[(static_cast<unsigned int>(inputString[j + 1]) & 0x0f) << 2 |  in Base64Encode()
44         case 1:  in Base64Encode()
45             // 1,2: the original character is one, and two characters are missing after conversion  in Base64Encode()
46             encodedRes[encodedRes.length() - 2] = '=';  in Base64Encode()
47             encodedRes[encodedRes.length() - 1] = '=';  in Base64Encode()
50             // 1: the original character is two, and a character are missing after conversion  in Base64Encode()
51             encodedRes[encodedRes.length() - 1] = '=';  in Base64Encode()
62         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  in Base64Decode()
63         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  in Base64Decode()
64         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  in Base64Decode()
65         -1, -1, -1, -1, -1, -1, -1,  in Base64Decode()
67         -1, -1, -1,  in Base64Decode()
70         -1, -1, -1, -1, -1, -1, -1,  in Base64Decode()
71         0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,  in Base64Decode()
73         -1, -1, -1, -1, -1, -1,  in Base64Decode()
81         decodedStrLen -= std::string("==").length();  in Base64Decode()
83         decodedStrLen -= std::string("=").length();  in Base64Decode()
90     // 2: the index do not exceed the range of encodedRes and form a complete four-character block  in Base64Decode()
91 … for (size_t i = 0, j = 0; i < strLen - 2; i += TRANSFORMED_CHAR_NUM, j += TO_TRANSFORM_CHAR_NUM) {  in Base64Decode()
92         // 1,2,3 is the nth character after the current position  in Base64Decode()
94         secondChar = decodeTable[static_cast<unsigned char>(base64String[i + 1])];  in Base64Decode()
98         if (firstChar == -1 || secondChar == -1) {  in Base64Decode()
101         // the last 6 bit of the first char + the 2~3 bit of the second char(first 4 bit - 00)  in Base64Decode()
103         if (j == decodedStrLen - 1) {  in Base64Decode()
106         if (thirdChar == -1) {  in Base64Decode()
109         // the last 4 bit of the second char +  the 2~5 bit of the third char(first 6 bit - 00)  in Base64Decode()
110 …decodedRes[j + 1] = (static_cast<unsigned int>(secondChar) << 4) | (static_cast<unsigned int>(thir…  in Base64Decode()
111         if (j + 1 == decodedStrLen - 1) {  in Base64Decode()
114         if (fourthChar == -1) {  in Base64Decode()