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Initial import of svn+ssh:://svn.icir.org/bro/trunk/bro as of r7088

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Robin Sommer 2010-09-27 20:42:30 -07:00
commit 61757ac78b
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src/SerializationFormat.h Normal file
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// $Id: SerializationFormat.h 5873 2008-06-28 19:25:03Z vern $
//
// Implements different data formats for serialization.
#ifndef SERIALIZATION_FORMAT
#define SERIALIZATION_FORMAT
#include "util.h"
// Abstract base class.
class SerializationFormat {
public:
SerializationFormat();
virtual ~SerializationFormat();
// Unserialization.
virtual void StartRead(char* data, uint32 len);
virtual void EndRead();
virtual bool Read(int* v, const char* tag) = 0;
virtual bool Read(uint16* v, const char* tag) = 0;
virtual bool Read(uint32* v, const char* tag) = 0;
virtual bool Read(int64* v, const char* tag) = 0;
virtual bool Read(uint64* v, const char* tag) = 0;
virtual bool Read(char* v, const char* tag) = 0;
virtual bool Read(bool* v, const char* tag) = 0;
virtual bool Read(double* d, const char* tag) = 0;
// Passes ownership of string.
virtual bool Read(char** str, int* len, const char* tag) = 0;
// Serialization.
virtual void StartWrite();
virtual uint32 EndWrite(char** data); // passes ownership
virtual bool Write(int v, const char* tag) = 0;
virtual bool Write(uint16 v, const char* tag) = 0;
virtual bool Write(uint32 v, const char* tag) = 0;
virtual bool Write(int64 v, const char* tag) = 0;
virtual bool Write(uint64 v, const char* tag) = 0;
virtual bool Write(char v, const char* tag) = 0;
virtual bool Write(bool v, const char* tag) = 0;
virtual bool Write(double d, const char* tag) = 0;
virtual bool Write(const char* s, const char* tag) = 0;
virtual bool Write(const char* buf, int len, const char* tag) = 0;
virtual bool WriteOpenTag(const char* tag) = 0;
virtual bool WriteCloseTag(const char* tag) = 0;
virtual bool WriteSeparator() = 0;
// Returns number of raw bytes written since last call to StartWrite().
int BytesWritten() const { return bytes_written; }
protected:
bool ReadData(void* buf, size_t count);
bool WriteData(const void* buf, size_t count);
static const uint32 INITIAL_SIZE = 65536;
char* output;
uint32 output_size;
uint32 output_pos;
char* input;
uint32 input_len;
uint32 input_pos;
int bytes_written;
};
class BinarySerializationFormat : public SerializationFormat {
public:
BinarySerializationFormat();
virtual ~BinarySerializationFormat();
virtual bool Read(int* v, const char* tag);
virtual bool Read(uint16* v, const char* tag);
virtual bool Read(uint32* v, const char* tag);
virtual bool Read(int64* v, const char* tag);
virtual bool Read(uint64* v, const char* tag);
virtual bool Read(char* v, const char* tag);
virtual bool Read(bool* v, const char* tag);
virtual bool Read(double* d, const char* tag);
virtual bool Read(char** str, int* len, const char* tag);
virtual bool Write(int v, const char* tag);
virtual bool Write(uint16 v, const char* tag);
virtual bool Write(uint32 v, const char* tag);
virtual bool Write(int64 v, const char* tag);
virtual bool Write(uint64 v, const char* tag);
virtual bool Write(char v, const char* tag);
virtual bool Write(bool v, const char* tag);
virtual bool Write(double d, const char* tag);
virtual bool Write(const char* s, const char* tag);
virtual bool Write(const char* buf, int len, const char* tag);
virtual bool WriteOpenTag(const char* tag);
virtual bool WriteCloseTag(const char* tag);
virtual bool WriteSeparator();
};
class XMLSerializationFormat:public SerializationFormat {
public:
XMLSerializationFormat();
virtual ~ XMLSerializationFormat();
// We don't write anything if tag is nil.
virtual bool Write(int v, const char* tag);
virtual bool Write(uint16 v, const char* tag);
virtual bool Write(uint32 v, const char* tag);
virtual bool Write(int64 v, const char* tag);
virtual bool Write(uint64 v, const char* tag);
virtual bool Write(char v, const char* tag);
virtual bool Write(bool v, const char* tag);
virtual bool Write(double d, const char* tag);
virtual bool Write(const char* s, const char* tag);
virtual bool Write(const char* buf, int len, const char* tag);
virtual bool WriteOpenTag(const char* tag);
virtual bool WriteCloseTag(const char* tag);
virtual bool WriteSeparator();
// Not implemented.
virtual bool Read(int* v, const char* tag);
virtual bool Read(uint16* v, const char* tag);
virtual bool Read(uint32* v, const char* tag);
virtual bool Read(int64* v, const char* tag);
virtual bool Read(uint64* v, const char* tag);
virtual bool Read(char* v, const char* tag);
virtual bool Read(bool* v, const char* tag);
virtual bool Read(double* d, const char* tag);
virtual bool Read(char** str, int* len, const char* tag);
private:
// Encodes non-printable characters.
bool WriteEncodedString(const char* str, int len);
// Write an elment including type and encoding.
bool WriteElem(const char* tag, const char* type,
const char* content, int len);
};
#endif