Function testChunkExists

samples/Node.js/flow-node.js:117–131

()

                var currentTestChunk = 1;
                var numberOfChunks = Math.max(Math.floor(totalSize / (chunkSize * 1.0)), 1);
                var testChunkExists = function() {
                    fs.exists(getChunkFilename(currentTestChunk, identifier), function(exists) {
                        if (exists) {
                            currentTestChunk++;
                            if (currentTestChunk > numberOfChunks) {
                                callback('done', filename, original_filename, identifier);
                            } else {
                                // Recursion
                                testChunkExists();
                            }
                        } else {
                            callback('partly_done', filename, original_filename, identifier);
                        }
                    });
                };
                testChunkExists();
            });
        } else {