103 lines
2.3 KiB
C++
103 lines
2.3 KiB
C++
|
#ifndef _LOG_STREAM_HH
|
||
|
|
#define _LOG_STREAM_HH
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
const int kSmallBuffer = 4096;
|
||
|
|
const int kLargeBuffer = 4096;
|
||
|
|
|
||
|
|
template<int SIZE>
|
||
|
|
class LogBuffer
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
LogBuffer(): m_cur(m_data){
|
||
|
|
}
|
||
|
|
|
||
|
|
~LogBuffer(){
|
||
|
|
//printf("%s", m_data);
|
||
|
|
}
|
||
|
|
|
||
|
|
void append(const char* /*restrict*/ buf, size_t len){
|
||
|
|
// append partially
|
||
|
|
if (/*implicit_cast<size_t>*/(avail()) > len)
|
||
|
|
{
|
||
|
|
memcpy(m_cur, buf, len);
|
||
|
|
m_cur += len;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// write in m_data directly
|
||
|
|
char* current() { return m_cur; };
|
||
|
|
int avail() const { return static_cast<int> (end() - m_cur); }
|
||
|
|
void add(size_t len) { m_cur += len; }
|
||
|
|
int length() const {return m_cur - m_data;}
|
||
|
|
|
||
|
|
const char* data() const { return m_data; }
|
||
|
|
|
||
|
|
private:
|
||
|
|
const char* end() const { return m_data + sizeof(m_data); }
|
||
|
|
|
||
|
|
char m_data[SIZE];
|
||
|
|
char* m_cur;
|
||
|
|
};
|
||
|
|
|
||
|
|
class LogStream{
|
||
|
|
public:
|
||
|
|
LogStream();
|
||
|
|
~LogStream();
|
||
|
|
|
||
|
|
typedef LogBuffer<kSmallBuffer> Buffer;
|
||
|
|
typedef LogStream self;
|
||
|
|
self& operator<<(bool v);
|
||
|
|
|
||
|
|
self& operator<<(short);
|
||
|
|
self& operator<<(unsigned short);
|
||
|
|
self& operator<<(int);
|
||
|
|
self& operator<<(unsigned int);
|
||
|
|
self& operator<<(long);
|
||
|
|
self& operator<<(unsigned long);
|
||
|
|
self& operator<<(long long);
|
||
|
|
self& operator<<(unsigned long long);
|
||
|
|
|
||
|
|
self& operator<<(const void*);
|
||
|
|
|
||
|
|
self& operator<<(float v);
|
||
|
|
self& operator<<(double);
|
||
|
|
|
||
|
|
self& operator<<(char v);
|
||
|
|
self& operator<<(const char *);
|
||
|
|
|
||
|
|
void append(const char* data, int len) { return m_buffer.append(data, len); }
|
||
|
|
const Buffer& buffer() const { return m_buffer; }
|
||
|
|
|
||
|
|
private:
|
||
|
|
LogStream(const LogStream& ls); //no copyable
|
||
|
|
LogStream& operator=(const LogStream& ls);
|
||
|
|
|
||
|
|
template<typename T>
|
||
|
|
void formatInteger(T v);
|
||
|
|
|
||
|
|
Buffer m_buffer;
|
||
|
|
static const int kMaxNumericSize = 32;
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
class Fmt{
|
||
|
|
public:
|
||
|
|
template<typename T>
|
||
|
|
Fmt(const char* fmt, T val);
|
||
|
|
|
||
|
|
const char* data() const { return m_buf; }
|
||
|
|
int length() const { return m_length; }
|
||
|
|
|
||
|
|
private:
|
||
|
|
char m_buf[32];
|
||
|
|
int m_length;
|
||
|
|
};
|
||
|
|
|
||
|
|
inline LogStream& operator<<(LogStream &s, const Fmt& fmt){
|
||
|
|
s.append(fmt.data(), fmt.length());
|
||
|
|
return s;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|