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2320497992
This reverts commitcd9515efd9, reversing changes made todf46c8e698. Too slow. Needs more work.
74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
#ifndef NODE_BUFFER_H_
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#define NODE_BUFFER_H_
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#include <node.h>
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#include <node_object_wrap.h>
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#include <v8.h>
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#include <assert.h>
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namespace node {
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/* A buffer is a chunk of memory stored outside the V8 heap, mirrored by an
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* object in javascript. The object is not totally opaque, one can access
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* individual bytes with [] and slice it into substrings or sub-buffers
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* without copying memory.
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*
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* // return an ascii encoded string - no memory is copied
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* buffer.asciiSlice(0, 3)
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*/
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class Buffer : public ObjectWrap {
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public:
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~Buffer();
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typedef void (*free_callback)(char *data, void *hint);
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// C++ API for constructing fast buffer
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static v8::Handle<v8::Object> New(v8::Handle<v8::String> string);
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static void Initialize(v8::Handle<v8::Object> target);
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static Buffer* New(size_t length); // public constructor
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static Buffer* New(char *data, size_t len); // public constructor
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static Buffer* New(char *data, size_t length,
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free_callback callback, void *hint); // public constructor
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static bool HasInstance(v8::Handle<v8::Value> val);
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static inline char* Data(v8::Handle<v8::Object> obj) {
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return (char*)obj->GetIndexedPropertiesExternalArrayData();
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}
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static inline size_t Length(v8::Handle<v8::Object> obj) {
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return (size_t)obj->GetIndexedPropertiesExternalArrayDataLength();
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}
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private:
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static v8::Persistent<v8::FunctionTemplate> constructor_template;
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static v8::Handle<v8::Value> New(const v8::Arguments &args);
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static v8::Handle<v8::Value> BinarySlice(const v8::Arguments &args);
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static v8::Handle<v8::Value> AsciiSlice(const v8::Arguments &args);
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static v8::Handle<v8::Value> Base64Slice(const v8::Arguments &args);
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static v8::Handle<v8::Value> Utf8Slice(const v8::Arguments &args);
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static v8::Handle<v8::Value> BinaryWrite(const v8::Arguments &args);
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static v8::Handle<v8::Value> Base64Write(const v8::Arguments &args);
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static v8::Handle<v8::Value> AsciiWrite(const v8::Arguments &args);
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static v8::Handle<v8::Value> Utf8Write(const v8::Arguments &args);
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static v8::Handle<v8::Value> ByteLength(const v8::Arguments &args);
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static v8::Handle<v8::Value> MakeFastBuffer(const v8::Arguments &args);
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static v8::Handle<v8::Value> Copy(const v8::Arguments &args);
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Buffer(v8::Handle<v8::Object> wrapper, size_t length);
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void Replace(char *data, size_t length, free_callback callback, void *hint);
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size_t length_;
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char* data_;
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free_callback callback_;
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void* callback_hint_;
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};
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} // namespace node buffer
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#endif // NODE_BUFFER_H_
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