C++常用函数

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///////十六进制转char。。。。
inthexToChar(string &value, char *buf, int &bufLen)
{
// ACE_DEBUG(( _INFO ACE_TEXT( "value:[%s]\n" ), value.c_str()));
memset(buf, 0x00, bufLen);
if ((unsigned int )bufLen < (value.length()/2))
{
return -1;
}
if (value.length() == 0)
{
return -1;
}
if (value.length() % 2 != 0)
{
return -1;
}
int bufIndex = 0;
for (unsigned int i = 0; i < value.length()/2; i++)
{
string tmp = value.substr(i*2, 2);
ascToHex(tmp.c_str(), &buf[bufIndex], 2);
bufIndex++;
}
bufLen = bufIndex;
//ACE_HEX_DUMP((LM_INFO, (char *)buf, bufLen, "resp message:"));
return 0;
}
////asc转十六进制
intascToHex(const char *Asc, char *Hex, int AscLen)
{
char *HexPtr = Hex;
short i;
for(i = 0; i < AscLen; i++)
{
*HexPtr = Asc[i] << 4;
if (!(Asc[i]>='0' && Asc[i]<='9'))
*HexPtr += 0x90;
i++;
*HexPtr |= (Asc[i] & 0x0F);
if (!(Asc[i]>='0' && Asc[i]<='9'))
*HexPtr += 0x09;
HexPtr++;
}
return 0;
}
//十六进制转asc
inthexToAsc(const char *Hex, int HexLen, char *Asc)
{
int i;
char *AscPtr;
const char *HexPtr;
char Temp;
HexPtr=Hex;
AscPtr=Asc;
for(i = 0; i < HexLen; i++)
{
Temp = (*HexPtr & 0xf0) >> 4;
if (Temp < 10)
*AscPtr = 0x30 + Temp; // 数字0－9
else
*AscPtr = 0x37 + Temp; // 字母A－F
AscPtr++;
Temp = *HexPtr & 0x0f;
if (Temp < 10)
*AscPtr = 0x30 + Temp;
else
*AscPtr = 0x37 + Temp;
AscPtr++;
HexPtr++;
}
return 0;
}
//删除字符串中的空格。
voiddelAllBlank(string &line)
{
if (line.length() <= 0)
{
return;
}
string tmp;
tmp.clear();
try
{
for(unsigned int i = 0; i < line.length(); i++)
{
if (line[i] == ' ' || line[i] == '\t'
|| line[i] == '\n' || line[i] == '\r')
{
continue;
}
else
{
tmp += line[i];
}
}
line.clear();
line = tmp;
}
catch(...)
{
ACE_DEBUG(( _ERROR ACE_TEXT( " delAllBlank execaption\n" ) ));
}
return;
}
///同上。
voiddelAllBlank(char *pstr)
{
if (NULL == pstr)
{
return;
}
int strLen = strlen(pstr);
string tmpStr;
try
{
for(int i = 0; i < strLen; i++)
{
if (pstr[i] == ' ' || pstr[i] == '\t'
|| pstr[i] == '\n' || pstr[i] == '\r')
{
continue;
}
else
{
tmpStr += pstr[i];
}
}
}
catch(...)
{
ACE_DEBUG(( _ERROR ACE_TEXT( " delAllBlank execaption\n" ) ));
}
memset(pstr, 0x00, strLen);
memcpy(pstr, tmpStr.c_str(), tmpStr.length());
return;
}
/////删除最后一个空格
voiddelLastBlank(char *pstr)
{
if (NULL == pstr)
{
return;
}
string tmpStr = pstr;
memset(pstr, 0x00, strlen(pstr));
try
{
for (;;)
{
if (tmpStr.length() > 0)
{
if (tmpStr[tmpStr.length()-1] == ' ' || tmpStr[tmpStr.length()-1] == '\t'
|| tmpStr[tmpStr.length()-1] == '\n' || tmpStr[tmpStr.length()-1] == '\r')
{
tmpStr.erase(tmpStr.length()-1);
}
else
{
break;
}
}
else
{
break;
}
}
}
catch(...)
{
ACE_DEBUG(( _ERROR ACE_TEXT( " delLastBlank execaption\n" ) ));
}
memcpy(pstr, tmpStr.c_str(), tmpStr.length());
return;
}
voiddelLastBlank(string &tmpStr )
{
try
{
for (;;)
{
if (tmpStr.length() > 0)
{
if (tmpStr[tmpStr.length()-1] == ' ' || tmpStr[tmpStr.length()-1] == '\t'
|| tmpStr[tmpStr.length()-1] == '\n' || tmpStr[tmpStr.length()-1] == '\r')
{
tmpStr.erase(tmpStr.length()-1);
}
else
{
break;
}
}
else
{
break;
}
}
}
catch(...)
{
ACE_DEBUG(( _ERROR ACE_TEXT( " delLastBlank execaption\n" ) ));
}
return;
}
////删除最前边的空格。
voiddelHeadBlank(string &tmpStr )
{
try
{
for (;;)
{
if (tmpStr.length() > 0)
{
if (tmpStr[0] == ' ' || tmpStr[0] == '\t'
|| tmpStr[0] == '\n' || tmpStr[0] == '\r')
{
tmpStr.erase(0);
}
else
{
break;
}
}
else
{
break;
}
}
}
catch(...)
{
ACE_DEBUG(( _ERROR ACE_TEXT( " delLastBlank execaption\n" ) ));
}
return;
}
//加载文件。
intloadFile(string fileName, vector<string> &vecLine)
{
vecLine.clear();
FILE *m_fp = fopen(fileName.c_str(), "rb");
if (NULL == m_fp)
{
ACE_DEBUG(( _ERROR ACE_TEXT( " getline execpaction:[%s]\n" ), fileName.c_str()));
return -1;
}
char fileLine[MAX_FILE_LINE_LEN];
try
{
for (;;)
{
memset(fileLine, 0x00, MAX_FILE_LINE_LEN);
if (!feof(m_fp))
{
if (NULL == fgets(fileLine, MAX_FILE_LINE_LEN, m_fp))
{
break;
}
vecLine.push_back(fileLine);
}
else
{
break;
}
}
}
catch(...)
{
fclose(m_fp);
ACE_DEBUG(( _ERROR ACE_TEXT( " getline execpaction:[%s]\n" ), fileName.c_str()));
return -1;
}
fclose(m_fp);
return 0;
}
////写到文件
void writeToFile(string fileName, char *format, ...)
{
va_list ap;
char date[10240];
char msgformat[10240];
memset(msgformat, 0x00, 10240);
memset(date, 0x00, 10240);
FILE *logfp = NULL;
logfp = fopen(fileName.c_str(), "a+");
if (NULL == logfp)
{
printf("open log file fail.\n");
return ;
}
if (NULL == format)
{
printf("NULL == format.\n");
}
strcat(msgformat, format);
int msglen = strlen(msgformat);
if ('\n' != msgformat[msglen - 1])
{
strcat(msgformat, "\n");
}
va_start(ap, format);
vfprintf (logfp, msgformat, ap);
va_end(ap);
fflush(logfp);
fclose(logfp);
return;
}