More gjs notes

Javascript and Gnome. Such an awkward and undocumented marriage. Still, though, some more notes on the basics. Shelling out:

#!/usr/bin/env gjs                                                                                 
'use strict'                                                                                       
                                                                                                   
const Gio = imports.gi.Gio                                                                         
                                                                                                   
const argv = ['echo', 'hello', 'world']                                                            
                                                                                                   
const launcher = new Gio.SubprocessLauncher({                                                      
    flags: Gio.SubprocessFlags.STDOUT_PIPE                                                         
})                                                                                                 
const proc = launcher.spawnv(argv)                                                                 
                                                                                                   
proc.wait_check(null)                                                                              
                                                                                                   
const [ok, stdout, stderr] = proc.communicate_utf8(null, null)                                     
                                                                                                   
print(stdout)                                                                                      

Sending data over stdin:

#!/usr/bin/env gjs                                                                                 
'use strict'                                                                                       
                                                                                                   
const Gio = imports.gi.Gio                                                                         
                                                                                                   
const argv = ['cat']                                                                               
                                                                                                   
const launcher = new Gio.SubprocessLauncher({                                                      
    flags: Gio.SubprocessFlags.STDIN_PIPE | Gio.SubprocessFlags.STDOUT_PIPE                        
})                                                                                                 
const proc = launcher.spawnv(argv)                                                                 
                                                                                                   
const [ok, stdout, stderr] = proc.communicate_utf8("stdin data\n", null)                           
                                                                                                   
proc.wait_check(null)                                                                              
                                                                                                   
print(stdout)