43 lines
1.2 KiB
PHP
43 lines
1.2 KiB
PHP
<?php
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namespace nulib\os;
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use RuntimeException;
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/**
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* Class IOException: erreur sur un flux ou un système de fichiers
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*/
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class IOException extends RuntimeException {
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static final function last_error(?string $prefix=null): ?self {
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$error = error_get_last();
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if ($error === null) return null;
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$message = $error["message"];
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if ($prefix) $message = "$prefix: $message";
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return new static($message);
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}
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static final function generic_error(?string $message=null): self {
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if ($message === null) $message = "generic error";
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return new static($message);
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}
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static final function error(?string $prefix=null): self {
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$exception = self::last_error($prefix);
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if ($exception !== null) throw $exception;
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else throw self::generic_error($prefix);
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}
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static final function ensure_valid($value, bool $throw=true, $invalid=false) {
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if ($value !== $invalid) return $value;
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elseif (!$throw) return null;
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else throw self::error();
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}
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static final function already_closed(): self {
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return new static("already closed");
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}
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static final function ensure_open(bool $closed): void {
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if ($closed) throw self::already_closed();
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}
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}
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