event-stream.js how can i refrence each line I.E (0) , (1) ect ect

Question

okay i have a function within my node.js script using the event stream module.

i can check the line data with the simple script i have below but i want to be able to use each line aswell. example of what i want

line(0)  --- first line of stdout 
line(1)  --- second line of stdout
ect, ect

my script i am using at the moment

function pinstripe() {
    es.pipeline(
    child.stdout,
    es.split(),
    es.map(function (line) {
        console.log(line);
        if (line === 'Captchadone') {
        child.stdin.write("hello" + '\n');


        }

        if (line === 'Input1') {
        child.stdin.write("243534:fdghdfgth456:45365" + '\n');


        }

    })
);   
}

then i call it like so

pinstripe();

this works like expected but how do i make the function so i can use it like so ..

function pinstripe() {
    es.pipeline(
    child.stdout,
    es.split(),
    es.map(function (line) {
        console.log(line);
        if (line === 'Captchadone') {
        child.stdin.write("hello" + '\n');
        child.stdin.write(line(0));   //i want to refrence
        child.stdin.write(line(1));   //each line like so 

        }

        if (line === 'Input1') {
        child.stdin.write("243534:fdghdfgth456:45365" + '\n');
        child.stdin.write(line(2));   //and here


        }

    })
);   
}

obviously this does not work but how can i make it so it does work

You need to save all lines somewhere (in an Array for instance) in order for referencing them later. This makes streaming useless however... Unless you save a limited number of lines (ex. according to a specific pattern.) — fardjad, Apr 03 '14 at 20:45
writing it to an array would be perfect is there a way i can push each line into an array ? — user3407899, Apr 03 '14 at 20:52
the main lines i want at the minute are line 1 line 2 and line 3 — user3407899, Apr 03 '14 at 20:53

fardjad · Answer 1 · 2014-04-03T21:05:44.747

0

Try this:

function pinstripe() {
  var index = 0,
      lines = [];

  es.pipeline(
    child.stdout,
    es.split(),
    es.map(function (line) {
      console.log(line);
      if (index <= 2) {
        lines[index++] = line;
      }
      if (line === 'Captchadone') {
        child.stdin.write("hello" + '\n');
        child.stdin.write(lines[0]);
        child.stdin.write(lines[1]);
        // set index = 0 to start over
      }
      if (line === 'Input1') {
        child.stdin.write("243534:fdghdfgth456:45365" + '\n');
        child.stdin.write(lines[2]);
        // set index = 0 to start over
      }
    })
  );
}

edited Apr 03 '14 at 21:05

answered Apr 03 '14 at 21:00

fardjad

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unfortunatly this does not work i do not get any of the output from [0][1] or [3] but everything else is there – user3407899 Apr 03 '14 at 21:07
@user3407899 Can you please post the contents of `lines`? (just put a `console.log(lines)` before `child.stdin.write(lines[0]);`) – fardjad Apr 03 '14 at 21:22

event-stream.js how can i refrence each line I.E (0) , (1) ect ect

1 Answers1