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@ -275,6 +275,16 @@ Handle<Value> Buffer::Utf8Slice(const Arguments &args) { |
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static char* base64_table = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" |
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static char* base64_table = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" |
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"abcdefghijklmnopqrstuvwxyz" |
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"abcdefghijklmnopqrstuvwxyz" |
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"0123456789+/"; |
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"0123456789+/"; |
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static int unbase64_table[] = |
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{-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1 |
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,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1 |
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,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,62,-1,-1,-1,63 |
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,52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-1,-1,-1 |
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,-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14 |
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,15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1 |
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,-1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40 |
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,41,42,43,44,45,46,47,48,49,50,51,-1,-1,-1,-1,-1 |
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}; |
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Handle<Value> Buffer::Base64Slice(const Arguments &args) { |
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Handle<Value> Buffer::Base64Slice(const Arguments &args) { |
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@ -485,6 +495,91 @@ Handle<Value> Buffer::AsciiWrite(const Arguments &args) { |
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} |
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} |
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// var bytesWritten = buffer.base64Write(string, offset);
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Handle<Value> Buffer::Base64Write(const Arguments &args) { |
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HandleScope scope; |
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assert(unbase64_table['/'] == 63); |
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assert(unbase64_table['+'] == 62); |
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assert(unbase64_table['T'] == 19); |
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assert(unbase64_table['Z'] == 25); |
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assert(unbase64_table['t'] == 45); |
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assert(unbase64_table['z'] == 51); |
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Buffer *buffer = ObjectWrap::Unwrap<Buffer>(args.This()); |
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if (!args[0]->IsString()) { |
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return ThrowException(Exception::TypeError(String::New( |
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"Argument must be a string"))); |
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} |
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String::AsciiValue s(args[0]->ToString()); |
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size_t offset = args[1]->Int32Value(); |
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if (offset >= buffer->length_) { |
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return ThrowException(Exception::TypeError(String::New( |
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"Offset is out of bounds"))); |
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} |
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char *input = *s; |
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int input_len = s.length(); |
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char *start = buffer->data() + offset; |
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char *p = start; |
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const char *pe = buffer->data() + buffer->length_; |
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int i = 0; |
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char a,b,c,d; |
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bool b_oob, c_oob; |
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while (i < input_len && p < pe) { |
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if (input[i] == '=' || i >= input_len) break; |
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a = unbase64_table[input[i]]; |
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i++; |
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if (input[i] == '=' || i >= input_len) { |
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b = 0; |
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b_oob = true; |
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} else { |
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b = unbase64_table[input[i]]; |
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b_oob = false; |
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} |
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i++; |
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if (b_oob || input[i] == '=' || i >= input_len) { |
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c = 0; |
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c_oob = true; |
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} else { |
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c = unbase64_table[input[i]]; |
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c_oob = false; |
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} |
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i++; |
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if (c_oob || input[i] == '=' || i >= input_len) { |
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d = 0; |
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} else { |
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d = unbase64_table[input[i]]; |
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} |
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i++; |
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*p = (a << 2) | ((b & 0x30) >> 4); |
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if (++p >= pe) break; |
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if (b_oob) break; |
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*p = ((b & 0x0F) << 4) | ((c & 0x3c) >> 2); |
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if (++p >= pe) break; |
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if (c_oob) break; |
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*p = ((c & 0x03) << 6) | (d & 0x3f); |
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if (++p >= pe) break; |
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} |
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return scope.Close(Integer::New(p - start)); |
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} |
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Handle<Value> Buffer::BinaryWrite(const Arguments &args) { |
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Handle<Value> Buffer::BinaryWrite(const Arguments &args) { |
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HandleScope scope; |
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HandleScope scope; |
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@ -619,6 +714,7 @@ void Buffer::Initialize(Handle<Object> target) { |
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "utf8Write", Buffer::Utf8Write); |
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "utf8Write", Buffer::Utf8Write); |
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "asciiWrite", Buffer::AsciiWrite); |
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "asciiWrite", Buffer::AsciiWrite); |
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "binaryWrite", Buffer::BinaryWrite); |
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "binaryWrite", Buffer::BinaryWrite); |
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "base64Write", Buffer::Base64Write); |
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "unpack", Buffer::Unpack); |
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "unpack", Buffer::Unpack); |
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "copy", Buffer::Copy); |
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "copy", Buffer::Copy); |
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