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<?php
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declare(strict_types=1);
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namespace OpenSpout\Reader;
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use OpenSpout\Common\Exception\IOException;
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/**
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 * @template T of SheetIteratorInterface
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 */
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interface ReaderInterface
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{
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    /**
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     * Prepares the reader to read the given file. It also makes sure
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     * that the file exists and is readable.
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     *
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     * @param string $filePath Path of the file to be read
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     *
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     * @throws IOException
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     */
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    public function open(string $filePath): void;
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    /**
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     * Returns an iterator to iterate over sheets.
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     *
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     * @return T
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     *
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     * @throws Exception\ReaderNotOpenedException If called before opening the reader
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     */
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    public function getSheetIterator(): SheetIteratorInterface;
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    /**
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     * Closes the reader, preventing any additional reading.
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     */
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    public function close(): void;
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}