Swift
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-rw-r--r--Swiften/StringCodecs/Base64.cpp150
1 files changed, 75 insertions, 75 deletions
diff --git a/Swiften/StringCodecs/Base64.cpp b/Swiften/StringCodecs/Base64.cpp
index 4e6ac8c..6eeaca9 100644
--- a/Swiften/StringCodecs/Base64.cpp
+++ b/Swiften/StringCodecs/Base64.cpp
@@ -11,91 +11,91 @@
using namespace Swift;
namespace {
- const char* encodeMap =
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
- const unsigned char decodeMap[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, 62, 255, 255, 255, 63,
- 52, 53, 54, 55, 56, 57, 58, 59,
- 60, 61, 255, 255, 255, 255, 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
- };
+ const char* encodeMap =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+ const unsigned char decodeMap[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, 62, 255, 255, 255, 63,
+ 52, 53, 54, 55, 56, 57, 58, 59,
+ 60, 61, 255, 255, 255, 255, 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
+ };
- template<typename ResultType, typename InputType>
- ResultType encodeDetail(const InputType& input) {
- ResultType result;
- size_t i = 0;
- for (; i < (input.size()/3)*3; i += 3) {
- unsigned int c = input[i+2] | (input[i+1]<<8) | (input[i]<<16);
- result.push_back(encodeMap[(c&0xFC0000)>>18]);
- result.push_back(encodeMap[(c&0x3F000)>>12]);
- result.push_back(encodeMap[(c&0xFC0)>>6]);
- result.push_back(encodeMap[c&0x3F]);
- }
- if (input.size() % 3 == 2) {
- unsigned int c = (input[i+1]<<8) | (input[i]<<16);
- result.push_back(encodeMap[(c&0xFC0000)>>18]);
- result.push_back(encodeMap[(c&0x3F000)>>12]);
- result.push_back(encodeMap[(c&0xFC0)>>6]);
- result.push_back('=');
- }
- else if (input.size() % 3 == 1) {
- unsigned int c = input[i]<<16;
- result.push_back(encodeMap[(c&0xFC0000)>>18]);
- result.push_back(encodeMap[(c&0x3F000)>>12]);
- result.push_back('=');
- result.push_back('=');
- }
- return result;
- }
+ template<typename ResultType, typename InputType>
+ ResultType encodeDetail(const InputType& input) {
+ ResultType result;
+ size_t i = 0;
+ for (; i < (input.size()/3)*3; i += 3) {
+ unsigned int c = input[i+2] | (input[i+1]<<8) | (input[i]<<16);
+ result.push_back(encodeMap[(c&0xFC0000)>>18]);
+ result.push_back(encodeMap[(c&0x3F000)>>12]);
+ result.push_back(encodeMap[(c&0xFC0)>>6]);
+ result.push_back(encodeMap[c&0x3F]);
+ }
+ if (input.size() % 3 == 2) {
+ unsigned int c = (input[i+1]<<8) | (input[i]<<16);
+ result.push_back(encodeMap[(c&0xFC0000)>>18]);
+ result.push_back(encodeMap[(c&0x3F000)>>12]);
+ result.push_back(encodeMap[(c&0xFC0)>>6]);
+ result.push_back('=');
+ }
+ else if (input.size() % 3 == 1) {
+ unsigned int c = input[i]<<16;
+ result.push_back(encodeMap[(c&0xFC0000)>>18]);
+ result.push_back(encodeMap[(c&0x3F000)>>12]);
+ result.push_back('=');
+ result.push_back('=');
+ }
+ return result;
+ }
}
std::string Base64::encode(const ByteArray& s) {
- return encodeDetail<std::string>(s);
+ return encodeDetail<std::string>(s);
}
SafeByteArray Base64::encode(const SafeByteArray& s) {
- return encodeDetail<SafeByteArray>(s);
+ return encodeDetail<SafeByteArray>(s);
}
ByteArray Base64::decode(const std::string& input) {
- ByteArray result;
+ ByteArray result;
- if (input.size() % 4) {
- return ByteArray();
- }
- for (size_t i = 0; i < input.size(); i += 4) {
- unsigned char c1 = input[i+0];
- unsigned char c2 = input[i+1];
- unsigned char c3 = input[i+2];
- unsigned char c4 = input[i+3];
- if (c3 == '=') {
- unsigned int c = (((decodeMap[c1]<<6)|decodeMap[c2])&0xFF0)>>4;
- result.push_back(c);
- }
- else if (c4 == '=') {
- unsigned int c = (((decodeMap[c1]<<12)|(decodeMap[c2]<<6)|decodeMap[c3])&0x3FFFC)>>2;
- result.push_back((c&0xFF00) >> 8);
- result.push_back(c&0xFF);
- }
- else {
- unsigned int c = (decodeMap[c1]<<18) | (decodeMap[c2]<<12) | (decodeMap[c3]<<6) | decodeMap[c4];
- result.push_back((c&0xFF0000) >> 16);
- result.push_back((c&0xFF00) >> 8);
- result.push_back(c&0xFF);
- }
- }
- return result;
+ if (input.size() % 4) {
+ return ByteArray();
+ }
+ for (size_t i = 0; i < input.size(); i += 4) {
+ unsigned char c1 = input[i+0];
+ unsigned char c2 = input[i+1];
+ unsigned char c3 = input[i+2];
+ unsigned char c4 = input[i+3];
+ if (c3 == '=') {
+ unsigned int c = (((decodeMap[c1]<<6)|decodeMap[c2])&0xFF0)>>4;
+ result.push_back(c);
+ }
+ else if (c4 == '=') {
+ unsigned int c = (((decodeMap[c1]<<12)|(decodeMap[c2]<<6)|decodeMap[c3])&0x3FFFC)>>2;
+ result.push_back((c&0xFF00) >> 8);
+ result.push_back(c&0xFF);
+ }
+ else {
+ unsigned int c = (decodeMap[c1]<<18) | (decodeMap[c2]<<12) | (decodeMap[c3]<<6) | decodeMap[c4];
+ result.push_back((c&0xFF0000) >> 16);
+ result.push_back((c&0xFF00) >> 8);
+ result.push_back(c&0xFF);
+ }
+ }
+ return result;
}