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<?
class CCSVData
{
var $sFileName; // full file name
var $sContent; // file contents
var $iFileLength; // file length
var $iCurPos = 0; // current file position Fetch
var $cFieldsType = "R"; // fields type: R - with delimiter, F - fixed width
var $cDelimiter = ";"; // field delimiter
var $arWidthMap = array(); // array of delimiters positions in fixed width case
var $bFirstHeader = false; // 1 row - columns titles
var $__file = null;
var $__buffer = "";
var $__buffer_pos = 0;
var $__buffer_size = 0;
var $__hasBOM = false;
function CCSVData($fields_type = "R", $first_header = false)
{
$this->SetFieldsType($fields_type);
$this->SetFirstHeader($first_header);
}
function LoadFile($filename)
{
$this->sFileName = $filename;
$this->__file = fopen($this->sFileName, "rb");
$this->iFileLength = filesize($this->sFileName);
$this->CheckUTF8BOM();
$this->SetPos(0);
}
function CheckUTF8BOM()
{
//check UTF-8 Byte-Order Mark
fseek($this->__file, 0);
$sBOM = fread($this->__file, 3);
if($sBOM == "\xEF\xBB\xBF")
$this->__hasBOM = true;
}
function SetFieldsType($fields_type = "R")
{
$this->cFieldsType = ($fields_type=="F") ? "F" : "R";
}
function SetDelimiter($delimiter = ";")
{
$this->cDelimiter = (strlen($delimiter)>1) ? substr($delimiter, 0, 1) : $delimiter;
}
function SetFirstHeader($first_header = false)
{
$this->bFirstHeader = $first_header;
}
function GetFirstHeader()
{
return $this->bFirstHeader;
}
function SetWidthMap($arMap)
{
$this->arWidthMap = array();
for ($i = 0; $i < count($arMap); $i++)
{
$this->arWidthMap[$i] = IntVal($arMap[$i]);
}
}
function FetchDelimiter()
{
$bInString = false;
$str = "";
$res_r = Array();
while ($this->iCurPos < $this->iFileLength)
{
$ch = $this->__buffer[$this->__buffer_pos];
if ($ch == "\r" || $ch == "\n")
{
if (!$bInString)
{
while ($this->iCurPos < $this->iFileLength)
{
$this->IncCurPos();
$ch = $this->__buffer[$this->__buffer_pos];
if ($ch != "\r" && $ch != "\n") break;
}
if ($this->bFirstHeader)
{
$this->bFirstHeader = False;
$res_r = array();
$str = "";
continue;
}
else
{
$res_r[] = $str;
return $res_r;
}
}
}
elseif ($ch == "\"")
{
if (!$bInString)
{
$bInString = true;
$this->IncCurPos();
continue;
}
else
{
$this->IncCurPos();
if($this->__buffer[$this->__buffer_pos]!="\"")
{
$bInString = false;
continue;
}
}
}
elseif ($ch == $this->cDelimiter)
{
if (!$bInString)
{
$res_r[] = $str;
$str = "";
$this->IncCurPos();
continue;
}
}
//$this->IncCurPos();
//inline "call"
$this->iCurPos++;
$this->__buffer_pos++;
if($this->__buffer_pos >= $this->__buffer_size)
{
if(feof($this->__file))
$this->__buffer = "";
else
$this->__buffer = fread($this->__file, 1024*1024);
$this->__buffer_size = function_exists("mb_strlen")? mb_strlen($this->__buffer, 'latin1'): strlen($this->__buffer);
$this->__buffer_pos = 0;
}
$str .= $ch;
}
if (strlen($str))
{
$res_r[] = $str;
return $res_r;
}
return false;
}
function FetchWidth()
{
$str = "";
$ind = 1;
$jnd = 0;
$res_r = Array();
while ($this->iCurPos < $this->iFileLength)
{
$ch = $this->__buffer[$this->__buffer_pos];
if ($ch == "\r" || $ch == "\n")
{
while ($this->iCurPos < $this->iFileLength)
{
$this->IncCurPos();
$ch = $this->__buffer[$this->__buffer_pos];
if ($ch != "\r" && $ch != "\n") break;
}
if ($this->bFirstHeader)
{
$this->bFirstHeader = False;
$res_r = array();
$ind = 1;
$str = "";
continue;
}
else
{
$res_r[] = $str;
return $res_r;
}
}
elseif ($ind == $this->arWidthMap[$jnd])
{
$res_r[] = $str.$ch;
$str = "";
$this->IncCurPos();
$ind++;
$jnd++;
continue;
}
//$this->IncCurPos();
//inline "call"
$this->iCurPos++;
$this->__buffer_pos++;
if($this->__buffer_pos >= $this->__buffer_size)
{
if(feof($this->__file))
$this->__buffer = "";
else
$this->__buffer = fread($this->__file, 1024*1024);
$this->__buffer_size = function_exists("mb_strlen")? mb_strlen($this->__buffer, 'latin1'): strlen($this->__buffer);
$this->__buffer_pos = 0;
}
$ind++;
$str .= $ch;
}
if (strlen($str)>0)
{
$res_r[] = $str;
return $res_r;
}
return false;
}
function Fetch()
{
if ($this->cFieldsType=="R")
{
if (strlen($this->cDelimiter)<=0) return false;
return $this->FetchDelimiter();
}
else
{
if (count($this->arWidthMap)<=0) return false;
return $this->FetchWidth();
}
}
function IncCurPos()
{
$this->iCurPos++;
$this->__buffer_pos++;
if($this->__buffer_pos >= $this->__buffer_size)
{
if(feof($this->__file))
$this->__buffer = "";
else
$this->__buffer = fread($this->__file, 1024*1024);
$this->__buffer_size = function_exists("mb_strlen")? mb_strlen($this->__buffer, 'latin1'): strlen($this->__buffer);
$this->__buffer_pos = 0;
}
}
function MoveFirst()
{
$this->SetPos(0);
}
function GetPos()
{
return $this->iCurPos;
}
function SetPos($iCurPos = 0)
{
$iCurPos = IntVal($iCurPos);
if ($iCurPos<=$this->iFileLength)
$this->iCurPos = IntVal($iCurPos);
else
$this->iCurPos = $this->iFileLength;
$pos = $this->iCurPos;
if($this->__hasBOM)
$pos += 3;
fseek($this->__file, $pos);
if(feof($this->__file))
$this->__buffer = "";
else
$this->__buffer = fread($this->__file, 1024*1024);
$this->__buffer_size = function_exists("mb_strlen")? mb_strlen($this->__buffer, 'latin1'): strlen($this->__buffer);
$this->__buffer_pos = 0;
}
function SaveFile($filename, $arFields)
{
$this->sFileName = $filename;
if ($this->cFieldsType=="R")
{
if (strlen($this->cDelimiter)<=0) return false;
$this->sContent = "";
for ($i = 0; $i < count($arFields); $i++)
{
if ($i>0) $this->sContent .= $this->cDelimiter;
$pos1 = strpos($arFields[$i], $this->cDelimiter);
$pos2 = strpos($arFields[$i], "\"");
$pos3 = strpos($arFields[$i], "\n");
$pos4 = strpos($arFields[$i], "\r");
if ($pos1 !== false || $pos2 !== false || $pos3 !== false || $pos4 !== false)
{
$this->sContent .= "\"";
$this->sContent .= str_replace("\"", "\"\"", $arFields[$i]);
$this->sContent .= "\"";
}
else
{
$this->sContent .= $arFields[$i];
}
}
if (strlen($this->sContent)>0)
{
$this->sContent .= "\n";
$file_id = fopen($this->sFileName, "ab");
fwrite($file_id, $this->sContent);
fclose($file_id);
}
}
}
}
?>