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Add legacy 'binary' encoding/decoding methods to Buffer

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This commit is contained in:
Ryan Dahl
2010-03-19 20:33:09 -07:00
parent b80f6e9ed1
commit ac684f3583
4 changed files with 58 additions and 4 deletions
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44
src/node_buffer.cc
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@@ -171,6 +171,20 @@ Buffer::~Buffer() {
}
Handle<Value> Buffer::BinarySlice(const Arguments &args) {
HandleScope scope;
Buffer *parent = ObjectWrap::Unwrap<Buffer>(args.This());
SLICE_ARGS(args[0], args[1])
const char *data = const_cast<char*>(parent->data_ + start);
//Local<String> string = String::New(data, end - start);
Local<Value> b = Encode(data, end - start, BINARY);
return scope.Close(b);
}
Handle<Value> Buffer::AsciiSlice(const Arguments &args) {
HandleScope scope;
Buffer *parent = ObjectWrap::Unwrap<Buffer>(args.This());
@@ -267,6 +281,34 @@ Handle<Value> Buffer::AsciiWrite(const Arguments &args) {
}
Handle<Value> Buffer::BinaryWrite(const Arguments &args) {
HandleScope scope;
Buffer *buffer = ObjectWrap::Unwrap<Buffer>(args.This());
if (!args[0]->IsString()) {
return ThrowException(Exception::TypeError(String::New(
"Argument must be a string")));
}
Local<String> s = args[0]->ToString();
size_t offset = args[1]->Int32Value();
if (offset >= buffer->length_) {
return ThrowException(Exception::TypeError(String::New(
"Offset is out of bounds")));
}
char *p = (char*)buffer->data_ + offset;
size_t towrite = MIN((unsigned long) s->Length(), buffer->length_ - offset);
int written = DecodeWrite(p, towrite, s, BINARY);
return scope.Close(Integer::New(written));
}
// buffer.unpack(format, index);
// Starting at 'index', unpacks binary from the buffer into an array.
// 'format' is a string
@@ -361,6 +403,7 @@ void Buffer::Initialize(Handle<Object> target) {
constructor_template->SetClassName(String::NewSymbol("Buffer"));
// copy free
NODE_SET_PROTOTYPE_METHOD(constructor_template, "binarySlice", Buffer::BinarySlice);
NODE_SET_PROTOTYPE_METHOD(constructor_template, "asciiSlice", Buffer::AsciiSlice);
NODE_SET_PROTOTYPE_METHOD(constructor_template, "slice", Buffer::Slice);
// TODO NODE_SET_PROTOTYPE_METHOD(t, "utf16Slice", Utf16Slice);
@@ -369,6 +412,7 @@ void Buffer::Initialize(Handle<Object> target) {
NODE_SET_PROTOTYPE_METHOD(constructor_template, "utf8Write", Buffer::Utf8Write);
NODE_SET_PROTOTYPE_METHOD(constructor_template, "asciiWrite", Buffer::AsciiWrite);
NODE_SET_PROTOTYPE_METHOD(constructor_template, "binaryWrite", Buffer::BinaryWrite);
NODE_SET_PROTOTYPE_METHOD(constructor_template, "unpack", Buffer::Unpack);
NODE_SET_METHOD(constructor_template->GetFunction(),