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Posted to dev@commons.apache.org by bu...@apache.org on 2005/02/01 18:24:41 UTC
DO NOT REPLY [Bug 33336] New: -
CountingInputStream.getCount() often returns invalid values.
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http://issues.apache.org/bugzilla/show_bug.cgi?id=33336
Summary: CountingInputStream.getCount() often returns invalid
values.
Product: Commons
Version: 1.0 Final
Platform: PC
OS/Version: Linux
Status: NEW
Severity: major
Priority: P2
Component: IO
AssignedTo: commons-dev@jakarta.apache.org
ReportedBy: pawelstawicki@poczta.onet.pl
In all read methods there is code like this:
int found = super.read(b);
this.count += found;
return found;
or like this:
this.count++;
return super.read();
It is ok until we will reach EOF. In this case super.read() returns -1, and
decreases count in the first case, and increases in the second. In such case
count should not be changed. So when we have something like this:
File file = new File("somefile.txt") //File with text "123" and no newlines
CountingInputStream cis = new CountingInputStream(new FileInputStream (file));
BufferedReader reader = new BufferedReader(new InputStreamReader(cis));
while(reader.read() != -1) {}
After this code when we call cis.getCount() it will return 2, while number of
bytes in read file is 3.
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