63 lines
1.4 KiB
PHP
63 lines
1.4 KiB
PHP
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<?php
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namespace nur\data\template;
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use nur\b\io\FileReader;
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use nur\b\io\IReader;
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use nur\b\io\IWriter;
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use nur\b\ValueException;
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use nur\data\expr\SimpleContext;
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class StreamTemplate extends SimpleContext implements ITemplate {
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use TTemplate;
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/**
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* retourner un nom de fichier à utiliser par défaut en entrée si l'argument
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* $input n'est pas spécifié.
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*/
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protected function INPUT(): ?string {
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return static::INPUT;
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} const INPUT = null;
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/** @var IReader */
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private $input;
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/** @var IWriter */
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private $output;
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/** @var bool */
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private $autoClose;
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function __construct(IWriter $output, ?IReader $input=null, bool $autoClose=true) {
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parent::__construct();
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$this->input = $input;
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$this->output = $output;
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$this->autoClose = $autoClose;
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$this->context = $this;
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}
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protected function ensureInput(): IReader {
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$input = $this->input;
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if ($input === null) {
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$input = $this->INPUT();
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if ($input === null) {
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throw new ValueException("input is required");
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}
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$input = new FileReader($input);
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}
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return $input;
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}
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/** retourner true */
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function apply() {
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$context = $this->getContext();
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$input = $this->ensureInput();
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$output = $this->output;
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foreach ($input as $line) {
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$line = $this->applyRules($line, $context);
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$output->wnl($line);
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}
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$output->close($this->autoClose);
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return true;
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}
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}
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