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SimpleCSV.php
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SimpleCSV.php
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<?php
namespace Shuchkin;
class SimpleCSV
{
protected $_delimiter;
protected $_enclosure;
protected $_linebreak;
protected $_csv = '';
public static function parse($filename_or_data, $is_data, $delimiter = 'auto', $enclosure = 'auto', $linebreak = 'auto')
{
$csv = new static($delimiter, $enclosure, $linebreak);
$csv->_csv = $is_data ? $filename_or_data : file_get_contents($filename_or_data);
return $csv;
}
public static function parseFile($filename, $delimiter = 'auto', $enclosure = 'auto', $linebreak = 'auto')
{
return static::parse($filename, false, $delimiter, $enclosure, $linebreak);
}
public static function parseData($csv_content, $delimiter = 'auto', $enclosure = 'auto', $linebreak = 'auto')
{
return static::parse($csv_content, true, $delimiter, $enclosure, $linebreak);
}
public static function import($filename_or_data, $is_data = false, $delimiter = 'auto', $enclosure = 'auto', $linebreak = 'auto')
{
return (new static($delimiter, $enclosure, $linebreak))->toArray($filename_or_data, $is_data);
}
public static function export($items, $delimiter = ',', $enclosure = '"', $linebreak = "\r\n")
{
return (new static($delimiter, $enclosure, $linebreak))->fromArray($items);
}
public function __construct($delimiter = 'auto', $enclosure = 'auto', $linebreak = 'auto')
{
$this->_delimiter = $delimiter;
$this->_enclosure = $enclosure;
$this->_linebreak = $linebreak;
}
public function delimiter($set = false)
{
if ($set !== false) {
return $this->_delimiter = $set;
}
if ($this->_delimiter === 'auto') {
// detect delimiter
if (($p = strpos($this->_csv, $this->_enclosure . ',')) > 0
&& ($this->_csv[$p-1] !== $this->_enclosure)
) {
$this->_delimiter = ',';
} elseif (($p = strpos($this->_csv, $this->_enclosure."\t")) > 0
&& ($this->_csv[$p-1] !== $this->_enclosure)
) {
$this->_delimiter = "\t";
} elseif (($p = strpos($this->_csv, $this->_enclosure . ';')) > 0
&& ($this->_csv[$p-1] !== $this->_enclosure)
) {
$this->_delimiter = ';';
} elseif (strpos($this->_csv, ',') !== false) {
$this->_delimiter = ',';
} elseif (strpos($this->_csv, "\t") !== false) {
$this->_delimiter = "\t";
} elseif (strpos($this->_csv, ';') !== false) {
$this->_delimiter = ';';
} else {
$this->_delimiter = ',';
}
}
return $this->_delimiter;
}
public function enclosure($set = false)
{
if ($set !== false) {
return $this->_enclosure = $set;
}
if ($this->_enclosure === 'auto') {
// detect quot
if (strpos($this->_csv, '"') !== false) {
$this->_enclosure = '"';
} else if (strpos($this->_csv, "'") !== false) {
$this->_enclosure = "'";
} else {
$this->_enclosure = '"';
}
}
return $this->_enclosure;
}
public function linebreak($set = false)
{
if ($set !== false) {
return $this->_linebreak = $set;
}
if ($this->_linebreak === 'auto') {
if (strpos($this->_csv, "\r\n") !== false) {
$this->_linebreak = "\r\n";
} else if (strpos($this->_csv, "\n") !== false) {
$this->_linebreak = "\n";
} else if (strpos($this->_csv, "\r") !== false) {
$this->_linebreak = "\r";
} else {
$this->_linebreak = "\r\n";
}
}
return $this->_linebreak;
}
public function rows()
{
return $this->toArray();
}
public function toArray($filename = null, $is_csv_content = false)
{
if ($filename) {
$this->_csv = $is_csv_content ? $filename : file_get_contents($filename);
}
$CSV_LINEBREAK = $this->linebreak();
$CSV_ENCLOSURE = $this->enclosure();
$CSV_DELIMITER = $this->delimiter();
$r = array();
$cnt = strlen($this->_csv);
$esc = false;
$i = $k = $n = 0;
$r[$k][$n] = '';
while ($i < $cnt) {
$ch = $this->_csv[$i];
$chch = ($i < $cnt-1) ? $ch.$this->_csv[$i+1] : $ch;
if ($ch === $CSV_LINEBREAK) {
if ($esc) {
$r[$k][$n] .= $ch;
} else {
$k++;
$n = 0;
$esc = false;
$r[$k][$n] = '';
}
} else if ($chch === $CSV_LINEBREAK) {
if ($esc) {
$r[$k][$n] .= $chch;
} else {
$k++;
$n = 0;
$esc = false;
$r[$k][$n] = '';
}
$i++;
} else if ($ch === $CSV_DELIMITER) {
if ($esc) {
$r[$k][$n] .= $ch;
} else {
$n++;
$r[$k][$n] = '';
$esc = false;
}
} else if ($chch === $CSV_ENCLOSURE.$CSV_ENCLOSURE && $esc) {
$r[$k][$n] .= $CSV_ENCLOSURE;
$i++;
} elseif ($ch === $CSV_ENCLOSURE) {
$esc = !$esc;
} else {
$r[$k][$n] .= $ch;
}
$i++;
}
return $r;
}
public function fromArray($items)
{
if (!is_array($items)) {
trigger_error('CSV::export array required', E_USER_WARNING);
return false;
}
$CSV_DELIMITER = $this->delimiter();
$CSV_ENCLOSURE = $this->enclosure();
$CSV_LINEBREAK = $this->linebreak();
$result = '';
foreach ($items as $i) {
$line = '';
foreach ($i as $v) {
if (is_string($v) && $v !== '') {
if (strpos($v, $CSV_ENCLOSURE) !== false) {
$v = str_replace($CSV_ENCLOSURE, $CSV_ENCLOSURE . $CSV_ENCLOSURE, $v);
}
if ((strpos($v, $CSV_DELIMITER) !== false)
|| (strpos($v, $CSV_ENCLOSURE) !== false)
|| (strpos($v, $CSV_LINEBREAK) !== false)) {
$v = $CSV_ENCLOSURE . $v . $CSV_ENCLOSURE;
}
}
$line .= $line ? $CSV_DELIMITER . $v : $v;
}
$result .= $result ? $CSV_LINEBREAK . $line : $line;
}
return $result;
}
}