l3_str.cpp

此为破解装载器一书中的源代码,在看雪论坛下载的,

#include "l3_str.h"


TextString& TextString::operator+=(const TextString& s) // EXCEPTION NEUTRAL
{
	if(&s==this)
	{
		const int len=length();
		const int len_pow2=len<<1;
		_string.resize(len_pow2+1);
		_string[len_pow2]='\0';
		if(len>0)
		{
			memcpy(&_string[len], &_string[0], len*sizeof(char));
		}
	}
	else
	{
		const int len=length();
		const int s_len=s.length();
		const int total_len=len+s_len;
		_string.resize(total_len+1);
		_string[total_len]='\0';
		if(s_len>0)
		{
			memcpy(&_string[len], &s._string[0], s_len*sizeof(char));
		}
	}
	return *this;
}