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Copy pathInputFile.cpp
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391 lines (350 loc) · 8.16 KB
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//////////////////////////////////////////////////////////////////////
// InputFile.cpp: implementation for the CInputFile class.
//
//////////////////////////////////////////////////////////////////////
#include "stdio.h"
#include "InputFile.h"
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CInputFile::CInputFile()
{
m_nBufferLen = 0;
m_ProcessRecord = 0 ;
m_fp = NULL;
m_nColNum = 0;
m_nCurCol = 0;
m_bFixLen = false;
}
CInputFile::~CInputFile()
{
Close() ;
}
CInputFile& CInputFile::operator>>(string& rStrData)
{
char str[1024];
memset( str , 0 , sizeof(str));
GetData( m_nCurCol ,str ) ;
rStrData = str ;
m_nCurCol ++;
return *this;
}
CInputFile& CInputFile::operator>>(int& rIntData)
{
char str[1024];
memset( str , 0 , sizeof(str));
GetData( m_nCurCol ,str );
rIntData = atoi( str );
m_nCurCol ++;
return *this;
}
CInputFile& CInputFile::operator>>(long long& rIntData)
{
char str[1024];
memset( str , 0 , sizeof(str));
GetData( m_nCurCol ,str );
rIntData = atoll( str );
m_nCurCol ++;
return *this;
}
CInputFile& CInputFile::operator>>(long& rLongData)
{
char str[1024];
memset( str , 0 , sizeof(str));
GetData( m_nCurCol ,str );
rLongData = atol( str);
m_nCurCol ++;
return *this;
}
CInputFile& CInputFile::operator>>(double& rDoubleData)
{
char str[1024];
memset( str , 0 , sizeof(str));
GetData( m_nCurCol ,str );
rDoubleData = atof(str);
m_nCurCol ++;
return *this;
}
CInputFile& CInputFile::operator>>(char* CharData)
{
char str[1024];
memset( str , 0 , sizeof(str));
GetData( m_nCurCol ,str );
strcpy( CharData , str );
m_nCurCol ++;
return *this;
}
/*
int CInputFile::Open(const string & str , int* nCols , int nColNum)
{
return Open(str.c_str() , nCols , nColNum);
}
*/
//打开固定长度文件
int CInputFile::Open(const char *filename,int *nCols , int nColNum )
{
if ( (m_fp = fopen(filename,"r")) == NULL )
{
//theLog<< " open file failed!\n" << ende;
//theLog<< "open file failed!" << __FILE__ << __LINE__ << errno << ende;
printf("open file failed,errno:[%d]!",errno) ;
return -1;
}
m_bFixLen = true;//为固定长度
m_nColNum = nColNum;
for(int i = 0 ; i < nColNum ; i++)
{
m_nCols[ i ] = nCols[ i ];
}
m_ProcessRecord = 0;
m_nCurCol = 0;
return 0;
}
//打开非固定长度文件
int CInputFile::Open(char *filename,char chSplit, bool bIgnore, bool bSavespace )
{
const char* filename1 = filename;
return Open(filename1 , chSplit, bIgnore);
}
int CInputFile::Open(const char *filename,char chSplit, bool bIgnore, bool bSavespace )
{
if ( (m_fp = fopen(filename,"r")) == NULL )
{
//theLog<< " open file failed!\n" << ende;
//theLog<< "open file failed!" << __FILE__ << __LINE__ << errno << ende;
printf("open file failed,errno:[%d]!",errno) ;
return -1;
}
m_bFixLen = false;//为以分隔符分隔文件
m_chSplit = chSplit;
m_ProcessRecord = 0;
m_nCurCol = 0;
m_bIgnore = bIgnore;
m_bSavespace = bSavespace;
return 0;
}
int CInputFile::Close()
{
if ( m_fp )
fclose(m_fp);
m_fp = NULL ;
return 0 ;
}
int CInputFile::operator ++(int)
{
return FetchData();
}
string CInputFile::operator [](int nColNo)
{
char str[1024];
memset(str,0,sizeof(str));
GetData(nColNo , str);
return str;
}
void CInputFile::GetIntColumn(int nColNo , int &nValue)
{
char str[1024];
int n;
memset(str,0,sizeof(str));
GetData(nColNo , str);
nValue = atoi( str );
}
void CInputFile::GetDoubleColumn(int nColNo , double &dValue)
{
char str[1024];
memset(str,0,sizeof(str));
GetData(nColNo , str);
dValue = atof( str );
}
int CInputFile::FetchData()
{
int m_nCurColumn = 0;
memset(m_buffer , 0 , sizeof(m_buffer));
int n = util_getline( m_fp , 1024 ,m_buffer);
if(n >= 0)
{
m_nBufferLen = n;
m_ProcessRecord ++;
m_nCurCol = 0;
return n;
}
else
return 0;
}
// 取文件的一行 hm
int CInputFile::FetchData2(string & str)
{
int m_nCurColumn = 0;
memset(m_buffer , 0 , sizeof(m_buffer));
int n = util_getline( m_fp , 1024 ,m_buffer);
if(n >= 0)
{
m_nBufferLen = n;
m_ProcessRecord ++;
m_nCurCol = 0;
str.assign(m_buffer);
return n;
}
else
return 0;
}
bool CInputFile::GetData(int nCurCol ,char *str )
{
//定长文件,计算在文件行中的开始位置
if(m_bFixLen)
{
int nBeginPos = 0;
for(int i = 0 ; i < nCurCol ; i++)
nBeginPos += m_nCols[ i ];
int nEndPos = nBeginPos + m_nCols[nCurCol];
if(nEndPos > m_nBufferLen)
{
//theLog<< "get column failed!" << __FILE__ << __LINE__ << errno << ende;
printf("get column failed!") ;
return false;
}
strncpy(str , m_buffer + nBeginPos , nEndPos - nBeginPos);
str[ nEndPos - nBeginPos ] = '\0';
if(m_bSavespace == false) util_trim( str );
}
else if(!m_bIgnore)
{
char *szBeginPos = m_buffer;
for(int i = 0 ; i < nCurCol ; i ++)
{
char *szTemp = szBeginPos ;
szBeginPos = strchr( szTemp , m_chSplit );
if (i != (nCurCol-1)) szBeginPos++;
if( szBeginPos >= m_nBufferLen + m_buffer )
{
//theLog<< "get column failed!" << __FILE__ << __LINE__ << errno << ende;
printf("get column failed!") ;
return false;
}
}
if (szBeginPos == NULL) return false;
if (nCurCol != 0) szBeginPos++;
char *szEndPos = strchr( szBeginPos , m_chSplit );
if(szEndPos == NULL )
szEndPos = m_buffer + m_nBufferLen;
strncpy(str , szBeginPos, szEndPos - szBeginPos);
str[szEndPos - szBeginPos] = '\0';
if(m_bSavespace == false) util_trim( str );
}
else
{
char *szBeginPos = m_buffer;
for(int i = 0 ; i < nCurCol ; i ++)
{
char *szTemp = szBeginPos ;
szBeginPos = strchr( szTemp , m_chSplit );
while (*(szBeginPos) == m_chSplit) szBeginPos++;
if( szBeginPos >= m_nBufferLen + m_buffer )
{
//theLog<< "get column failed!" << __FILE__ << __LINE__ << errno << ende;
printf("get column failed!") ;
return false;
}
}
if (szBeginPos == NULL) return false;
char *szEndPos = strchr( szBeginPos , m_chSplit );
if(szEndPos == NULL )
szEndPos = m_buffer + m_nBufferLen;
strncpy(str , szBeginPos, szEndPos - szBeginPos);
str[szEndPos - szBeginPos] = '\0';
if(m_bSavespace == false) util_trim( str );
}
return true ;
// bIgnore=true 忽略连续的分隔符，即多个连续的分隔符看作是一个分隔符
}
int CInputFile::getColumnSize()
{
string strtmp(m_buffer);
int nCount = count(strtmp.begin(), strtmp.end(), m_chSplit);
return nCount;
}
/////////////////////////////////////////////////////////////////////////////////////////////
/*enforced getline function , you can specify the type of file*/
static const char *crlfs[] =
{
"\x0d\x0a", /* DOS/Windows style*/
"\x0a\x0d", /* UNIX style*/
"\x0d\x0d\x0a", /*UNIX style2*/
"\x0a" /*Macintosh style*/
};
int util_getlineex( FILE *fd , int nLineLen , char *line ,int nstype)
{
int c;
int i = 0;
int nCrlfPtr = 0;
char *crlf;
memset( line , 0 , sizeof( line) );
c = fgetc( fd );
if( c == EOF )
return -1;
if( nstype < 0 || nstype > 3 )
{
//theLog<< "util_getlineex nstype error!\n"<<__FILE__<<__LINE__<<ende ;
printf("util_getlineex nstype error!\n") ;
return -1;
}
crlf = (char *)crlfs[ nstype ];
while( c != EOF && i < nLineLen )
{
if ((char) c == crlf[nCrlfPtr])
{
nCrlfPtr ++;
//到达了换行符的中止位置
if (crlf[nCrlfPtr] == 0)
{
nCrlfPtr = 0;
break;
}
}
else
nCrlfPtr = 0;
line[ i++ ] = c;
c = fgetc(fd );
}
line[ i ] = '\0';
return i;
}
int util_getline( FILE *fd , int nLineLen , char *line)
{
int c;
int i = 0;
memset( line , 0 , sizeof( line) );
c = fgetc( fd );
if( c == EOF )
return -1;
while( c == '\r' || c == '\n' )
{
c = fgetc( fd );
if( c == EOF )
return -1;
}
while( c != '\r' && c != '\n' && c != EOF && i < nLineLen )
{
line[ i++ ] = char(c);
c = fgetc(fd );
}
line[ i ] = '\0';
return i;
}
/*delete control characters*/
void util_trim(char *buf )
{
char tmp[1024];
char *pbegin = buf;
int nlen = strlen(buf);
char *pend = buf + nlen - 1;
memset( tmp , 0 , sizeof( tmp ));
while( pbegin < buf + nlen && strchr( "\r\n\t " , *pbegin))
pbegin ++;
while( pend >= buf && strchr( "\r\n\t " , *pend))
pend --;
if( pend >= pbegin )
strncpy( tmp , pbegin , pend - pbegin + 1);
memset( buf , 0 , sizeof( buf ));
strcpy( buf , tmp );
}