first version

1 files changed, 102 insertions, 0 deletions

diff --git a/yaml-cpp/src/binary.cpp b/yaml-cpp/src/binary.cpp
new file mode 100755
index 00000000..589eb089
--- /dev/null
+++ b/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);
+    }
+}