52 lines
1.3 KiB
PHP
52 lines
1.3 KiB
PHP
<?php
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namespace nulib\file\base;
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/**
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* Class FileReader: un fichier accédé en lecture
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*/
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class FileReader extends _File {
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/** @var bool *à l'ouverture du fichier*, faut-il ignorer le BOM? */
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const IGNORE_BOM = true;
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const DEFAULT_MODE = "rb";
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/** @var bool */
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protected $ignoreBom;
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function __construct($input, ?string $mode=null, bool $throwOnError=true, ?bool $allowLocking=null, ?bool $ignoreBom=null) {
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if ($ignoreBom === null) $ignoreBom = static::IGNORE_BOM;
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$this->ignoreBom = $ignoreBom;
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if ($input === null) {
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$fd = STDIN;
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$close = false;
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} elseif (is_resource($input)) {
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$fd = $input;
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$close = false;
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} else {
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$file = $input;
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if ($mode === null) $mode = static::DEFAULT_MODE;
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$this->file = $file;
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$this->mode = $mode;
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$fd = $this->open();
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$close = true;
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}
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parent::__construct($fd, $close, $throwOnError, $allowLocking);
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}
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/** @return resource */
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protected function open() {
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$fd = parent::open();
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$this->haveBom = false;
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if ($this->ignoreBom) {
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$bom = fread($fd, 3);
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if ($bom === "\xEF\xBB\xBF") $this->seekOffset = 3;
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else rewind($fd);
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}
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return $fd;
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}
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function haveBom(): bool {
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return $this->seekOffset !== 0;
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}
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}
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