c/c++语言开发共享常用代码杂记

	locale loc( "chs" ); 	wcout.imbue( loc ); 	wcout << getexepath().getbuffer() << endl; 

#pragma once  #include <windows.h> #include <atlstr.h> #include <string>  typedef std::basic_string<tchar, std::char_traits<tchar>,std::allocator<tchar> >  	tstring;  std::string t2a(cstring input) { 	uses_conversion; 	return t2a(input); }  std::string t2a(tstring input) { 	uses_conversion; 	return t2a(input.c_str()); }  cstring a2t(std::string input) { 	uses_conversion; 	return a2t(input.c_str()); }  tstring a2t_2(std::string input) { 	uses_conversion; 	return a2t(input.c_str()); }  char* unicodetoutf8(const wchar_t* unicode) { 	int len; 	len = widechartomultibyte(cp_utf8, 0, unicode, -1, null, 0, null, null); 	char *szutf8 = (char*)malloc(len + 1); 	memset(szutf8, 0, len + 1); 	widechartomultibyte(cp_utf8, 0, unicode, -1, szutf8, len, null, null); 	return szutf8; }  cstring utf82wcs(const char* szu8) { 	//预转换，得到所需空间的大小; 	int wcslen = ::multibytetowidechar(cp_utf8, null, szu8, strlen(szu8), null, 0);  	//分配空间要给''留个空间，multibytetowidechar不会给''空间 	wchar_t* wszstring = new wchar_t[wcslen + 1];  	//转换 	::multibytetowidechar(cp_utf8, null, szu8, strlen(szu8), wszstring, wcslen);  	//最后加上'' 	wszstring[wcslen] = '';  	cstring unicodestring(wszstring);  	delete[] wszstring; 	wszstring = null;  	return unicodestring; } 

#pragma once  #include <fstream> #include <sstream> #include <string>  std::string getfilecontents(std::string filename) { 	std::ifstream ifs(filename.c_str()); 	if (ifs.good()) 	{ 		std::stringstream ss; 		ss << ifs.rdbuf(); 		return ss.str(); 	} 	return ""; }  std::string getfilecontents2(std::string filename) { 	std::ifstream ifs(filename.c_str()); 	if (ifs.good()) 	{ 		std::string strbuffer((std::istreambuf_iterator<char>(ifs)),std::istreambuf_iterator<char>()); 		return strbuffer; 	} 	return ""; } 

#pragma once  #include <atlstr.h>  // 获取当前可执行文件的路径 cstring getexepath() { 	cstring strcurpath; 	getmodulefilename(null, strcurpath.getbuffer(max_path), max_path); 	strcurpath.releasebuffer(); 	return strcurpath.left(strcurpath.reversefind(_t('\'))); }  // 获取当前可执行文件的文件名 cstring getexename() { 	cstring strcurpath; 	getmodulefilename(null, strcurpath.getbuffer(max_path), max_path); 	strcurpath.releasebuffer(); 	return strcurpath.mid(strcurpath.reversefind(_t('\'))+1); }