forked from supplychainstudies/OpenSupplyChains
/
csv.php
131 lines (125 loc) · 4.34 KB
/
csv.php
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<?php
/* Copyright (C) Sourcemap 2011
* This program is free software: you can redistribute it and/or modify it under the terms
* of the GNU Affero General Public License as published by the Free Software Foundation,
* either version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License along with this
* program. If not, see <http://www.gnu.org/licenses/>.*/
class Sourcemap_Csv {
const FSTA = 'FSTA';
const FEND = 'FEND';
const FVAL = 'FVAL';
const FESC = 'FESC';
const FQUO = 'FQUO';
public static function parse($csv) {
$lines = explode("\n", $csv);
$data = array();
foreach($lines as $i => $line) {
$data[] = self::parse_csv_row($line);
}
return $data;
}
public static function parse_csv_row($row) {
$row = trim($row);
$vs = array();
$b = '';
$st = self::FSTA;
for($i=0; $i<strlen($row); $i++) {
$c = $row[$i];
switch($st) {
case self::FSTA:
switch($c) {
case '"':
$st = self::FQUO;
$b = '';
break;
case ',':
$vs[] = '';
break;
case ' ':
break;
default:
$b .= $c;
$st = self::FVAL;
break;
}
break;
case self::FQUO:
switch($c) {
case '"':
$st = self::FEND;
break;
case '\\':
$st = self::FESC;
break;
default:
$b .= $c;
break;
}
break;
case self::FVAL:
switch($c) {
case ',':
$vs[] = $b;
$b = '';
$st = self::FSTA;
break;
default:
$b .= $c;
break;
}
break;
case self::FESC:
switch($c) {
case '"':
$b .= $c;
$st = self::FQUO;
break;
default:
$b .= '\\';
$b .= $c;
$st = self::FQUO;
break;
}
break;
case self::FEND:
switch($c) {
case ',':
$vs[] = $b;
$b = '';
$st = self::FSTA;
break;
default:
break;
}
break;
default:
break;
}
}
if(strlen($b)) $vs[] = $b;
return $vs;
}
public static function make_csv_row($arr, $delim=',', $encap='"') {
$csv_arr = array();
$mink = min(array_keys($arr));
$maxk = max(array_keys($arr));
for($i=$mink; $i<=$maxk; $i++) {
$s = isset($arr[$i]) ? $arr[$i] : '';
if($encap) $s = str_replace($encap, '\\'.$encap, $s);
$csv_arr[] = (string)$s == '' ? '' : $encap.$s.$encap;
}
return implode($delim, $csv_arr);
}
public static function arr2csv($arr, $delim=',', $encap='"') {
$csv = '';
for($i=0; $i<count($arr); $i++)
$csv .= self::make_csv_row($arr[$i], $delim, $encap)."\n";
return $csv;
}
}