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20e75329f2
When `php_zlib_deflate_filter()` is called with `PSFS_FLAG_FLUSH_INC` but without new buckets being available (e.g. because a user calls `rewind()` after writing to the stream), we have to make sure that any pending data are flushed. This could basically be done like in the attached patch[1], but that could cause unnessary flushes, which can be harmful for compression, and adds unnecessary flush markers to the stream. Thus, we use the `php_zlib_filter_data.finished` field, which has not been used for `zlib.deflate` filters, and properly keep track of the need to flush. [1] <https://bugs.php.net/patch-display.php?bug_id=48725&patch=zlib-filter-flush-fix.patch&revision=latest> Closes GH-6019.
25 lines
614 B
PHP
25 lines
614 B
PHP
--TEST--
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Bug #48725 (Support for flushing in zlib stream)
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--SKIPIF--
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<?php
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if (!extension_loaded('zlib')) die('skip zip extension not available');
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?>
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--FILE--
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<?php
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$text = str_repeat('0123456789abcdef', 1000);
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$temp = fopen('php://temp', 'r+');
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stream_filter_append($temp, 'zlib.deflate', STREAM_FILTER_WRITE);
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fwrite($temp, $text);
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rewind($temp);
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var_dump(bin2hex(stream_get_contents($temp)));
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var_dump(ftell($temp));
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fclose($temp);
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?>
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--EXPECT--
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string(138) "ecc7c901c0100000b09594bac641d97f840e22f9253c31bdb9d4d6c75cdf3ec1ddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddaffc0f0000ffff"
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int(69)
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