node/src/node_buffer.h at autoconf · Nase/node · GitHub

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#ifndef NODE_BUFFER_H_

#define NODE_BUFFER_H_

#include <node.h>

#include <node_object_wrap.h>

#include <v8.h>

#include <assert.h>

namespace node {

/* A buffer is a chunk of memory stored outside the V8 heap, mirrored by an

* object in javascript. The object is not totally opaque, one can access

* individual bytes with [] and slice it into substrings or sub-buffers

* without copying memory.

* // return an ascii encoded string - no memory is copied

* buffer.asciiSlice(0, 3)

class Buffer : public ObjectWrap {

public:

~Buffer();

typedef void (*free_callback)(char *data, void *hint);

// C++ API for constructing fast buffer

static v8::Handle<v8::Object> New(v8::Handle<v8::String> string);

static void Initialize(v8::Handle<v8::Object> target);

static Buffer* New(size_t length); // public constructor

static Buffer* New(char *data, size_t len); // public constructor

static Buffer* New(char *data, size_t length,

free_callback callback, void *hint); // public constructor

static bool HasInstance(v8::Handle<v8::Value> val);

static char* Data(v8::Handle<v8::Object>);

static size_t Length(v8::Handle<v8::Object>);

private:

static v8::Persistent<v8::FunctionTemplate> constructor_template;

static v8::Handle<v8::Value> New(const v8::Arguments &args);

static v8::Handle<v8::Value> BinarySlice(const v8::Arguments &args);

static v8::Handle<v8::Value> AsciiSlice(const v8::Arguments &args);

static v8::Handle<v8::Value> Base64Slice(const v8::Arguments &args);

static v8::Handle<v8::Value> Utf8Slice(const v8::Arguments &args);

static v8::Handle<v8::Value> BinaryWrite(const v8::Arguments &args);

static v8::Handle<v8::Value> Base64Write(const v8::Arguments &args);

static v8::Handle<v8::Value> AsciiWrite(const v8::Arguments &args);

static v8::Handle<v8::Value> Utf8Write(const v8::Arguments &args);

static v8::Handle<v8::Value> ByteLength(const v8::Arguments &args);

static v8::Handle<v8::Value> MakeFastBuffer(const v8::Arguments &args);

static v8::Handle<v8::Value> Copy(const v8::Arguments &args);

Buffer(v8::Handle<v8::Object> wrapper, size_t length);

void Replace(char *data, size_t length, free_callback callback, void *hint);

size_t length_;

char* data_;

free_callback callback_;

void* callback_hint_;

};

} // namespace node buffer

#endif // NODE_BUFFER_H_

node/src/node_buffer.h at autoconf · Nase/node · GitHub

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