vc++读取ini文件,根据节点和子节点求出value值,不是用GetPrivateProfileString GetPrivateProfileInt 方

节点和子节点需要在键盘输入
2024-12-24 00:11:02
推荐回答(2个)
回答(1):

#include
#include
#include
#include
/*
在VC++里面读写配置文件最好还是用GetPrivateProfileString()和GetPrivateProfileInt()函数,
如果不用这两个函数,就只有自己写读文件的代码
首先建立一个config.ini文件,内容如下

[system]
server = 192.168.0.1
port = 5000

[timeout]
link = 10000
send = 20000
recv = 20000
*/

//去掉字符串首尾空格
void Trim(char *pStr)
{
char *pWork = pStr + strlen(pStr) - 1;
char *pEnd = pStr + strlen(pStr);
while ( pWork >= pStr )
{
if ( *pWork == ' ' || *pWork == '\r' || *pWork == '\n' || *pWork == '\t' || *pWork == '\b' )
{
memmove(pWork,pWork+1,pEnd-pWork);
}
pWork--;
}
}

//拆分key = value样式的字符串为key和value
void SplitKeyAndValue(char *LineData,char *OutKey,unsigned long KeySize,char *OutValue,unsigned long ValueSize)
{
char *pWork = LineData;
memset(OutKey,0x0,KeySize);
memset(OutValue,0x0,ValueSize);
while ( *pWork != '=' && pWork <= LineData + strlen(LineData) )
{
pWork++;
}
strncpy(OutKey,LineData,(pWork-LineData) > (KeySize - 1) ? (KeySize - 1) : (pWork-LineData));
Trim(OutKey);
strncpy(OutValue,
pWork+1,
(strlen(LineData) - (pWork-LineData)) > (ValueSize - 1) ? (ValueSize - 1) : (strlen(LineData) - (pWork-LineData)));
Trim(OutValue);
}

//从文件中读取一行数据
void ReadLineFromFile(FILE *pf,char *OutLine,unsigned long OutSize)
{
char tmpC = 0;
int index = 0;
memset(OutLine,0x0,OutSize);
while ( !feof(pf) )
{
fread(&tmpC,1,1,pf);
if ( tmpC == '\n' )
{
OutLine[index] = '\n';
break;
}
else
{
OutLine[index] = tmpC;
index++;
if ( index + 1 >= OutSize )
{
OutLine[index] = 0x0;
break;
}
}
}
}

/*
char *AppName---结点名称
char *KeyName---配置名称
char *DefaultValue----没有指定结点或配置时返回的默认值
char *OutStr---接收输出的字符串
unsigned long OutStrSize---接收输出字符串的长度
char *ConfigFileName---配置文件的名称
*/
void ReadConfigString(char *AppName,char *KeyName,char *DefaultValue,char *OutStr,unsigned long OutStrSize,char *ConfigFileName = NULL)
{
if ( NULL == OutStr )
{
printf("错误:调用ReadConfigString()函数前必须首先给OutStr分配OutStrSize大小的空间!");
return;
}

//给返回值赋初值
strncpy(OutStr,DefaultValue,OutStrSize);

//获取配置文件名
char RightConfigName[1024];
GetModuleFileNameA(NULL,RightConfigName,1024);
char *pWork = RightConfigName + strlen(RightConfigName);
if ( NULL == ConfigFileName || strlen(ConfigFileName) < 1 )
{
while ( *pWork != '.' )
{
pWork--;
}
strcpy(pWork,".ini");
}
else
{
while ( *pWork != '\\' )
{
pWork--;
}
strcpy(pWork+1,ConfigFileName);
}

//保存当前结点名称
char CurrentAppName[1024];
memset(CurrentAppName,0x0,1024);

//获取结点名称
char RightAppName[1024];
char RightAppNameTmp[1024];
strcpy(RightAppNameTmp,AppName);
Trim(RightAppNameTmp);
strcpy(RightAppName,"[");
strcat(RightAppName,RightAppNameTmp);
strcat(RightAppName,"]");

//打开文件读
char ReadLine[1024];
FILE *pf = fopen(RightConfigName,"rt");
if ( NULL == pf )
{
perror("打开配置文件错误:");
return;
}
while( !feof(pf) )
{
memset(ReadLine,0x0,1024);
ReadLineFromFile(pf,ReadLine,1024);//从文件中读取一行
//去掉首尾空格
Trim(ReadLine);
if ( strlen(ReadLine) < 1 )
{
continue;
}

if ( ReadLine[0] == '[' && ReadLine[strlen(ReadLine)-1] == ']' )
{
strcpy(CurrentAppName,ReadLine);
}
else
{
char tmpLineKey[1024];
char tmpLineValue[1024];
SplitKeyAndValue(ReadLine,tmpLineKey,1024,tmpLineValue,1024);

if ( strcmp(CurrentAppName,RightAppName) == 0 && strcmp(tmpLineKey,KeyName) == 0 )
{
strncpy(OutStr,tmpLineValue,OutStrSize);
fclose(pf);
return;
}
}
}
fclose(pf);
}

int main(void)
{
char AppName[1024];
printf("输入结点名称 = ");
scanf("%s",AppName);

char KeyName[1024];
printf("输入键名称 = ");
scanf("%s",KeyName);

char Value[1024];
memset(Value,0x0,1024);
ReadConfigString(AppName,KeyName,"没有此配置",Value,1024,"config.ini");

printf("找到配置值为 = %s\n",Value);

fflush(stdin);
getchar();
return 0;
}

回答(2):

使用下面的函数:
GetPrivateProfileString
GetPrivateProfileInt

我的INI文件名叫system.ini 内容

[Server]
ServerIP=10.38.163.11
Port=3002

char ipstr[20];//存储IP地址
GetPrivateProfileString("Server","ServerIP",NULL,ipstr,20,"d:\\test\\system.ini");
//第一个参数表示根节点,第二个参数表示子节点,第三个参数表示如果找不到,默认ipstr返回NULL,第四个参数存储返回结果,本例子ipstr就得到10.38.163.11的地址,第五个参数表示读的长度,最后一个参数是INI文件的路径和文件名

int port;
port = GetPrivateProfileInt("Server","Port",0,"d:\\test\\system.ini");
//参看上面的说明以及INI文件

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