LineNumberReader is a buffered character-input stream that keeps track of line numbers. You can use LineNumberReader to read line by line any InputStream convertible object.

By default, UTF-8 encoding will be used to construct the reader but you can give and optional argument with charset name to change it.

1 Examples

Copy

<script>
    var src = Ax.io.File.createTempFile();
    src.write("Hello World!");        
    var lnr = new Ax.io.LineNumberReader(src, "ISO-8859-1");
    console.log("Reading " + src);
    
    for (var line of lnr) {
        console.log(Ax.text.String.format("%4d", lnr.getLineNumber()) + ": " + line);
    }
</script>

Reading /etc/hosts
   1: ##
   2: # Host Database
   3: #
   4: # localhost is used to configure the loopback interface
   5: # when the system is booting.  Do not change this entry.
   6: ##
   7: 127.0.0.1	localhost
   8: 255.255.255.255	broadcasthost
   9: ::1             localhost 
  10: 
  11: 192.168.10.100	titan