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Fixed quota stream's fseek method 

- Added missing return statement
- Added missing support for SEEK_END
- Fixes #5524
This commit is contained in:
Vincent Petry 2013-10-25 12:09:46 +02:00
parent 5fd1f552a3
commit d8b245490b
2 changed files with 84 additions and 2 deletions
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14
lib/private/files/stream/quota.php
View File

@ -66,12 +66,22 @@ class Quota {
}
public function stream_seek($offset, $whence = SEEK_SET) {
if ($whence === SEEK_SET) {
if ($whence === SEEK_END){
// go to the end to find out last position's offset
$oldOffset = $this->stream_tell();
if (fseek($this->source, 0, $whence) !== 0){
return false;
}
$whence = SEEK_SET;
$offset = $this->stream_tell() + $offset;
$this->limit += $oldOffset - $offset;
}
else if ($whence === SEEK_SET) {
$this->limit += $this->stream_tell() - $offset;
} else {
$this->limit -= $offset;
}
fseek($this->source, $offset, $whence);
return !fseek($this->source, $offset, $whence);
}
public function stream_tell() {

72
tests/lib/files/stream/quota.php
View File

@ -75,4 +75,76 @@ class Quota extends \PHPUnit_Framework_TestCase {
rewind($stream);
$this->assertEquals('qwerty', fread($stream, 100));
}
public function testFseekReturnsSuccess() {
$stream = $this->getStream('w+', 100);
fwrite($stream, '0123456789');
$this->assertEquals(0, fseek($stream, 3, SEEK_SET));
$this->assertEquals(0, fseek($stream, -1, SEEK_CUR));
$this->assertEquals(0, fseek($stream, -4, SEEK_END));
}
public function testWriteAfterSeekEndWithEnoughSpace() {
$stream = $this->getStream('w+', 100);
fwrite($stream, '0123456789');
fseek($stream, -3, SEEK_END);
$this->assertEquals(11, fwrite($stream, 'abcdefghijk'));
rewind($stream);
$this->assertEquals('0123456abcdefghijk', fread($stream, 100));
}
public function testWriteAfterSeekEndWithNotEnoughSpace() {
$stream = $this->getStream('w+', 13);
fwrite($stream, '0123456789');
// seek forward first to potentially week out
// potential limit calculation errors
fseek($stream, 4, SEEK_SET);
// seek to the end
fseek($stream, -3, SEEK_END);
$this->assertEquals(6, fwrite($stream, 'abcdefghijk'));
rewind($stream);
$this->assertEquals('0123456abcdef', fread($stream, 100));
}
public function testWriteAfterSeekSetWithEnoughSpace() {
$stream = $this->getStream('w+', 100);
fwrite($stream, '0123456789');
fseek($stream, 7, SEEK_SET);
$this->assertEquals(11, fwrite($stream, 'abcdefghijk'));
rewind($stream);
$this->assertEquals('0123456abcdefghijk', fread($stream, 100));
}
public function testWriteAfterSeekSetWithNotEnoughSpace() {
$stream = $this->getStream('w+', 13);
fwrite($stream, '0123456789');
fseek($stream, 7, SEEK_SET);
$this->assertEquals(6, fwrite($stream, 'abcdefghijk'));
rewind($stream);
$this->assertEquals('0123456abcdef', fread($stream, 100));
}
public function testWriteAfterSeekCurWithEnoughSpace() {
$stream = $this->getStream('w+', 100);
fwrite($stream, '0123456789');
rewind($stream);
fseek($stream, 3, SEEK_CUR);
fseek($stream, 5, SEEK_CUR);
fseek($stream, -1, SEEK_CUR);
$this->assertEquals(11, fwrite($stream, 'abcdefghijk'));
rewind($stream);
$this->assertEquals('0123456abcdefghijk', fread($stream, 100));
}
public function testWriteAfterSeekCurWithNotEnoughSpace() {
$stream = $this->getStream('w+', 13);
fwrite($stream, '0123456789');
rewind($stream);
fseek($stream, 3, SEEK_CUR);
fseek($stream, 5, SEEK_CUR);
fseek($stream, -1, SEEK_CUR);
$this->assertEquals(6, fwrite($stream, 'abcdefghijk'));
rewind($stream);
$this->assertEquals('0123456abcdef', fread($stream, 100));
}
}