Question

Trying to use phonegap 0.9.6 file storage. The code works fine while I am writing a file but does not work when I try to append to the file (using seek, truncate etc.).

There was a bug in version 0.9.5 that seems to be fixed.

The code just terminates when I call writer.seek. The alert after truncate (or if I delete the truncate the seek) is not being called at all.

Should I set an append flag somewhere? The doc says that but does not give an example as to where I should be setting the append flag. The code is as follows

function gotFS(fileSystem) {
        fileSystem.root.getFile( "test.txt", {"create":true,
            "exclusive":false}, gotFileEntry, fail);
    }

    function gotFileEntry(fileEntry) {
        fileEntry.createWriter(gotFileWriter, fail);
    }

    function gotFileWriter(writer) {
        writer.onwrite = function(evt) {
            console.log("write success");
        };

        writer.write("some sample text");
        // contents of file now 'some sample text'
        writer.truncate(11);
        alert('truncated');
        // contents of file now 'some sample'
        writer.seek(writer.length); //writer.seek(4) does not work either

        // contents of file still 'some sample' but file pointer is after the 'e' in 'some'
        writer.write(" different text");
        // contents of file now 'some different text'
        alert('success with diff text');
    }

Any help would be appreciated.

Answer 1

I found a workaround to that :

        function gotFileWriter(writer) {
            writer.onwrite = function(evt) {
                console.log("write success");
            };

            writer.write("some sample text");
            // contents of file now 'some sample text'
            writer.abort();
            writer.truncate(11);
            // contents of file now 'some sample'
            writer.abort();
            writer.seek(writer.length); //writer.seek(4) does not work either

            // contents of file still 'some sample' but file pointer is after the 'e' in 'some'
            writer.write(" different text");
        }