/**
*@brief read string in initialization file\n
* retrieves a string from the specified section in an initialization file
*@param section [in] name of the section containing the key name
*@param key [in] name of the key pairs to value
*@param value [in] pointer to the buffer that receives the retrieved string
*@param size [in] size of value buffer
*@param default_value [in] defualt value of result
*@param file [in] path of the initialization file
*@return 1 : read success; \n 0 : read fail
*/
int read_profile_string( const char *section, const char *key,char *value,
int size, const char *default_value, const char *file)
{
char buf[MAX_FILE_SIZE]={0};
int file_size;
int sec_s,sec_e,key_s,key_e, value_s, value_e;
//check parameters
assert(section != NULL && strlen(section));
assert(key != NULL && strlen(key));
assert(value != NULL);
assert(size > 0);
assert(file !=NULL &&strlen(key));
if(!load_ini_file(file,buf,&file_size))
{
if(default_value!=NULL)
{
strncpy(value,default_value, size);
}
return 0;
}
if(!parse_file(section,key,buf,&sec_s,&sec_e,&key_s,&key_e,&value_s,&value_e))
{
if(default_value!=NULL)
{
strncpy(value,default_value, size);
}
return 0; //not find the key
}
else
{
int cpcount = value_e -value_s;
if( size-1 < cpcount)
{
cpcount = size-1;
}
memset(value, 0, size);
memcpy(value,buf+value_s, cpcount );
value[cpcount] = '\0';
return 1;
}
}
/**
*@brief int value in initialization file\n
* retrieves int value from the specified section in an initialization file
*@param section [in] name of the section containing the key name
*@param key [in] name of the key pairs to value
*@param default_value [in] defualt value of result
*@param file [in] path of the initialization file
*@return profile int value,if read fail, return default value
*/
int read_profile_int( const char *section, const char *key,int default_value,
const char *file)
{
char value[32] = {0};
if(!read_profile_string(section,key,value, sizeof(value),NULL,file))
{
return default_value;
}
else
{
return atoi(value);
}
}
/**
* @brief write a profile string to a ini file
* @param section [in] name of the section,can't be NULL and empty string
* @param key [in] name of the key pairs to value, can't be NULL and empty string
* @param value [in] profile string value
* @param file [in] path of ini file
* @return 1 : success\n 0 : failure
*/
int write_profile_string(const char *section, const char *key,
const char *value, const char *file)
{
char buf[MAX_FILE_SIZE]={0};
char w_buf[MAX_FILE_SIZE]={0};
int sec_s,sec_e,key_s,key_e, value_s, value_e;
int value_len = (int)strlen(value);
int file_size;
FILE *out;
//check parameters
assert(section != NULL && strlen(section));
assert(key != NULL && strlen(key));
assert(value != NULL);
assert(file !=NULL &&strlen(key));
if(!load_ini_file(file,buf,&file_size))
{
sec_s = -1;
}
else
{
parse_file(section,key,buf,&sec_s,&sec_e,&key_s,&key_e,&value_s,&value_e);
}
if( -1 == sec_s)
{
if(0==file_size)
{
sprintf(w_buf+file_size,"[%s]\n%s=%s\n",section,key,value);
}
else
{
//not find the section, then add the new section at end of the file
memcpy(w_buf,buf,file_size);
sprintf(w_buf+file_size,"\n[%s]\n%s=%s\n",section,key,value);
}
}
else if(-1 == key_s)
{
//not find the key, then add the new key & value at end of the section
memcpy(w_buf,buf,sec_e);
sprintf(w_buf+sec_e,"%s=%s\n",key,value);
sprintf(w_buf+sec_e+strlen(key)+strlen(value)+2,buf+sec_e, file_size - sec_e);
}
else
{
//update value with new value
memcpy(w_buf,buf,value_s);
memcpy(w_buf+value_s,value, value_len);
memcpy(w_buf+value_s+value_len, buf+value_e, file_size - value_e);
}
out = fopen(file,"w");
if(NULL == out)
{
return 0;
}
if(-1 == fputs(w_buf,out) )
{
fclose(out);
return 0;
}
fclose(out);
return 1;
}
#ifdef __cplusplus
}; //end of extern "C" {
#endif
最后的結(jié)果文件 myconfig.ini內(nèi)容：
[ Db ]
XX2 = 2writeOK
XX2 = 2writeOK
XX2 = 2writeOK
XX2 = 2writeOK
XX2 = 2writeOK
看起來好像是運(yùn)行幾次，就寫幾次新內(nèi)容，但原來的內(nèi)容不能讀取
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