C++ 实现ini文件读写

实现ini配置文件读写操作，以及获取程序路径

ini格式稍微来说比较简单为：
[Tiatle]
字段1=内容
字段2=内容

内容为纯数字时，可以使用整形（int）方式读取，如果是字符串则需使用字符串（string）读取，部分代码需要用到Windows API 所以需加上windows.h头文件

使用多字节编码代码如下：

1、获取程序路径：

//获取程序路径
char* GetAppPath(char *AppPath,int nSize)
{
	int i;
	memset(AppPath,0,nSize);
#ifdef UNICODE
	GetModuleFileNameA(NULL,AppPath,nSize);
#else
	GetModuleFileName(NULL,AppPath,nSize);
#endif
	for (i = strlen(AppPath) + 1; i >= 0; i --)
	{
		if (AppPath[i] == '\\')
		{
			break;
		}
	}
	AppPath[i] = 0;
	return AppPath;
}

2、读取和写入ini配置文件：

#include <iostream>
#include <windows.h>

int main()
{
	char app[1024] = {0};
	GetAppPath(app,sizeof(app));
	char filepath[1024] = {0};
	sprintf_s(filepath,"%s\\ConfigDevice.ini",app);

	char buf[1024] = "";
	char szTitle[] = "Title";
		//读取整形数据
#ifdef UNICODE
		int Number = GetPrivateProfileIntA(szTitle,"DeviceIndex",0,filepath);
		//读取字符串数据
		GetPrivateProfileStringA(szTitle,"DeviceName","TestData",buf,sizeof(buf),filepath);
#else
		int Number = GetPrivateProfileInt(szTitle,"DeviceIndex",0,filepath);
		GetPrivateProfileString(szTitle,"DeviceName","TestData",buf,sizeof(buf),filepath);
#endif


		//写入整形数据
		char szTmp[64];
		sprintf(szTmp,"%d",Number);
#ifdef UNICODE
		WritePrivateProfileStringA(szTitle,"DeviceIndex",szTmp,filepath);
		//直接写入字符串数据
		WritePrivateProfileStringA(szTitle,"DeviceName","WriteData2",filepath);
#else
		WritePrivateProfileString(szTitle,"DeviceIndex",szTmp,filepath);
		WritePrivateProfileString(szTitle,"DeviceName","WriteData",filepath);
#endif
}

程序运行结果：
在运行目录下生成ConfigDevice.ini文件，内容是程序写入的

使用Unicode字符编码

#include <iostream>
#include <windows.h>


LPWSTR toUnicode(const char* _str)
{
	LPWSTR _ret;
	int _len = strlen(_str) * 2;

	_ret = new WCHAR[_len];

	MultiByteToWideChar(CP_ACP, 0, _str, -1, _ret, _len);

	return _ret;
}

//获取程序路径
wchar_t* GetAppPath(wchar_t *AppPath,int nSize)
{
	int i;
	memset(AppPath,0,nSize);
	GetModuleFileName(NULL,AppPath,nSize);
	for (i = wcslen(AppPath) + 1; i >= 0; i --)
	{
		if (AppPath[i] == '\\')
		{
			break;
		}
	}
	AppPath[i] = 0;
	return AppPath;
}

int main()
{
	wchar_t app[1024] = {0};
	GetAppPath(app,sizeof(app));
	wchar_t filepath[512] = {0};
	wsprintf(filepath,toUnicode("%s\\ConfigDevice.ini"),app);

	wchar_t buf[2048] = {0};
	wchar_t szTitle[10] = {0};
	//memcpy(szTitle,toUnicode("Title"),sizeof("Title"));
	wcsncpy_s(szTitle,toUnicode("Title"),sizeof("Title"));
	//读取整形数据
	int Number = GetPrivateProfileInt(szTitle,toUnicode("DeviceIndex"),0,filepath);
	//读取字符串数据
	GetPrivateProfileString(szTitle,toUnicode("DeviceName"),toUnicode(""),buf,sizeof(buf),filepath);

	//写入整形数据
	char szTmp[64];
	sprintf(szTmp,"%d",Number);
	WritePrivateProfileString(szTitle,toUnicode("DeviceIndex"),toUnicode(szTmp),filepath);
	//直接写入字符串数据
	WritePrivateProfileString(szTitle,toUnicode("DeviceName"),toUnicode("WriteData"),filepath);

	wprintf(toUnicode("%s\n"),buf);
}