尝试编译代码时出现此错误:
1> c:\mingw\bin\../lib/gcc/mingw32/4.6.2/include/c++/ostream: In constructor 'Log::Log(const char*)':
1>c:\mingw\bin\..\lib\gcc\mingw32\4.6.2\include\c++\ostream(363,7): error : 'std::basic_ostream<_CharT, _Traits>::basic_ostream() [with _CharT = char, _Traits = std::char_traits<char>]' is protected
1>C:\Users\Adam\Documents\cs\cs176b\hw2\ftp\ftp\log.cpp(6,26): error : within this context
不太清楚为什么,我没有制作我自己使用的 ostream 代码,我使用了这里建议的内容:Proper way to create ostream to file or cout
我的代码如下,如果需要,很乐意提供更多信息:
// log.h
#include <string>
#include <fstream>
#ifndef LOG_H_
#define LOG_H_
class Log
{
public:
enum Mode { STDOUT, FILE };
// Needed by default
Log(const char *file = NULL);
~Log();
// Writing methods
void write(char *);
void write(std::string);
private:
Mode mode;
std::streambuf *buf;
std::ofstream of;
std::ostream out;
};
#endif
// log.cpp
#include "log.h"
#include <iostream>
#include <stdlib.h>
#include <time.h>
Log::Log(const char *file)
{
if (file != NULL)
{
of.open(file);
buf = of.rdbuf();
mode = FILE;
}
else
{
buf = std::cout.rdbuf();
mode = STDOUT;
}
// Attach to out
out.rdbuf(buf);
}
Log::~Log()
{
if (mode == FILE)
of.close();
}
void Log::write(std::string s)
{
out << s << std::endl;
}
void Log::write(char *s)
{
out << s << std::endl;
}