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| <?php
namespace model;
class CSVParser
{
/**
* @var string|false CSV field separator
*/
private $separator = false;
/**
* @var string|false CSV Field enclosure
*/
private $enclosure = false;
/**
* @var resource CSV file handle
*/
private $handle;
/**
* @var int
*/
private $buffer = 4096;
/**
* @var array CSV columns header
*/
private $header = [];
/**
* @var array [[header => value]]
*/
private $data = [];
/**
* @var string|false
*/
private $csv_type = false;
/**
* @var array
*/
private $errors = [];
/**
* @return array [header]
*/
public function header(): array
{
return $this->header;
}
/**
* @return array [[header => value]]
*/
public function data(): array
{
return $this->data;
}
/**
* @return string|false
*/
public function CSVType()
{
return $this->csv_type;
}
/**
* @return bool
*/
public function isValid(): bool
{
return ($this->separator !== false) && ($this->enclosure !== false) && ($this->csv_type !== false);
}
/**
* @return array
*/
public function errors(): array
{
return $this->errors;
}
/**
* @param string $filepath
* @param int $buffer
* @return array
*/
public function parse(string $filepath, int $buffer = 4096)
{
$this->handle = $this->getFileHandle($filepath);
$this->buffer = $buffer;
if (empty($this->errors)) {
$this->detectSyntaxFromHeader();
$this->detectCSVType();
} else {
return;
}
if ($this->isValid()) {
// les en-têtes ont été passés par la fonction detectSyntaxFromHeader()
// on récupère toutes les données
while (($row = fgetcsv($this->handle, $this->buffer, $this->separator, $this->enclosure)) !== false) {
$this->data[] = array_combine($this->header, $row);
}
}
}
/**
* @param $filepath
* @return resource
*/
private function getFileHandle($filepath)
{
$handle = is_file($filepath) ? fopen($filepath, ('r')) : false;
if ($handle === false) {
$this->errors[] = "File {$filepath} doesn't exist or unable to open";
} else {
return $handle;
}
}
private function detectSyntaxFromHeader()
{
// on lit jusqu'à la fin de la première ligne
$row = fgets($this->handle); // doit contenir les en-têtes des colonnes
if (empty($row)) {
$this->errors[] = 'The file is empty';
}
// séparateur
if (mb_stripos($row, ',') !== false) {
$this->separator = ',';
} elseif (mb_stripos($row, ';') === false) {
$this->separator = ';';
} else {
$this->errors[] = 'Unable to detect the CSV field separator';
return;
}
// délimiteur de valeur (ce qu'il y a entre 2 noms de colonne) : "," ou ";" ou ',' ou ';' etc
$char = mb_substr($row, 0, 1); // premier caractère
if (($char === '"') && (mb_stripos($row, '"'.$this->separator.'"') !== false)) {
$this->enclosure = '"';
} elseif (($char === "'") && (mb_stripos($row, "'".$this->separator."'") !== false)) {
$this->enclosure = "'";
} elseif (ctype_alpha($char)) {
// pas de délimiteur de texte
// on vérifie que le premier séparateur trouvé est bien entouré de lettres ASCII
$i = mb_stripos($row, $this->separator);
if ($i) {
$fc = mb_substr($row, $i - 1, 1);
$lc = mb_substr($row, $i + 1, 1);
if (ctype_alpha($fc) && ctype_alpha($lc)) {
$this->enclosure = '';
}
}
}
if ($this->enclosure === false) {
$this->errors[] = 'Unable to detect the CSV text enclosure';
return;
}
$this->header = explode($this->separator, str_replace($this->enclosure, '', $row));
}
private function detectCSVType()
{
if ( ! empty($this->header)) {
$col = $this->header[0];
if (mb_stripos($col, 'SESA') !== false) {
$this->csv_type = 'licenses';
} elseif (mb_stripos($col, 'Ticket') !== false) {
$this->csv_type = 'tickets';
} else {
$this->errors[] = 'This file is neither a licence nor a ticket';
}
}
}
} |
