nodejs - readline interface prompt value modification
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1
In nodejs, I am creating a CLI using readline module. initially I using the following code to start the prompt
let _interface = require('readline').createInterface{
input: process.stdin,
output: process.stdout,
prompt: '>'};
_interface.prompt();
/*some operation*/
_interface.prompt();
But I am trying to change the prompt icon from > to $ as the user try's to change it. How can this be done, without restarting the prompt.
node.js command-line-interface
asked Nov 29 '18 at 6:36
Nandha FrostNandha Frost
166
add a comment |
1
In nodejs, I am creating a CLI using readline module. initially I using the following code to start the prompt
let _interface = require('readline').createInterface{
input: process.stdin,
output: process.stdout,
prompt: '>'};
_interface.prompt();
/*some operation*/
_interface.prompt();
But I am trying to change the prompt icon from > to $ as the user try's to change it. How can this be done, without restarting the prompt.
node.js command-line-interface
asked Nov 29 '18 at 6:36
Nandha FrostNandha Frost
166
you want the cli user would be able to change the>to$
– Aabid
Nov 29 '18 at 6:40
yes you are correct, @Aabid
– Nandha Frost
Nov 29 '18 at 7:02
How user can change he will simply enter$and will change? please explain more why you want to do this.
– Aabid
Nov 29 '18 at 7:06
ok, lets consider the prompt is started the userWelcome to CLI and in next line he has >. now he is typing the commandchange --$, then from the next line CLI should use$. Hope you understood, for any more information let me know.
– Nandha Frost
Nov 29 '18 at 7:16
add a comment |
1
1
1
In nodejs, I am creating a CLI using readline module. initially I using the following code to start the prompt
let _interface = require('readline').createInterface{
input: process.stdin,
output: process.stdout,
prompt: '>'};
_interface.prompt();
/*some operation*/
_interface.prompt();
But I am trying to change the prompt icon from > to $ as the user try's to change it. How can this be done, without restarting the prompt.
node.js command-line-interface
asked Nov 29 '18 at 6:36
Nandha FrostNandha Frost
166
In nodejs, I am creating a CLI using readline module. initially I using the following code to start the prompt
let _interface = require('readline').createInterface{
input: process.stdin,
output: process.stdout,
prompt: '>'};
_interface.prompt();
/*some operation*/
_interface.prompt();
But I am trying to change the prompt icon from > to $ as the user try's to change it. How can this be done, without restarting the prompt.
node.js command-line-interface
node.js command-line-interface
asked Nov 29 '18 at 6:36
Nandha FrostNandha Frost
166
asked Nov 29 '18 at 6:36
Nandha FrostNandha Frost
166
asked Nov 29 '18 at 6:36
Nandha FrostNandha Frost
166
asked Nov 29 '18 at 6:36
Nandha FrostNandha Frost
166
asked Nov 29 '18 at 6:36
Nandha FrostNandha Frost
166
166
you want the cli user would be able to change the>to$
– Aabid
Nov 29 '18 at 6:40
yes you are correct, @Aabid
– Nandha Frost
Nov 29 '18 at 7:02
How user can change he will simply enter$and will change? please explain more why you want to do this.
– Aabid
Nov 29 '18 at 7:06
ok, lets consider the prompt is started the userWelcome to CLI and in next line he has >. now he is typing the commandchange --$, then from the next line CLI should use$. Hope you understood, for any more information let me know.
– Nandha Frost
Nov 29 '18 at 7:16
add a comment |
you want the cli user would be able to change the>to$
– Aabid
Nov 29 '18 at 6:40
yes you are correct, @Aabid
– Nandha Frost
Nov 29 '18 at 7:02
How user can change he will simply enter$and will change? please explain more why you want to do this.
– Aabid
Nov 29 '18 at 7:06
ok, lets consider the prompt is started the userWelcome to CLI and in next line he has >. now he is typing the commandchange --$, then from the next line CLI should use$. Hope you understood, for any more information let me know.
– Nandha Frost
Nov 29 '18 at 7:16
you want the cli user would be able to change the
> to $– Aabid
Nov 29 '18 at 6:40
you want the cli user would be able to change the
> to $– Aabid
Nov 29 '18 at 6:40
yes you are correct, @Aabid
– Nandha Frost
Nov 29 '18 at 7:02
yes you are correct, @Aabid
– Nandha Frost
Nov 29 '18 at 7:02
How user can change he will simply enter
$ and will change? please explain more why you want to do this.– Aabid
Nov 29 '18 at 7:06
How user can change he will simply enter
$ and will change? please explain more why you want to do this.– Aabid
Nov 29 '18 at 7:06
ok, lets consider the prompt is started the user
Welcome to CLI and in next line he has >. now he is typing the command change --$, then from the next line CLI should use $. Hope you understood, for any more information let me know.– Nandha Frost
Nov 29 '18 at 7:16
ok, lets consider the prompt is started the user
Welcome to CLI and in next line he has >. now he is typing the command change --$, then from the next line CLI should use $. Hope you understood, for any more information let me know.– Nandha Frost
Nov 29 '18 at 7:16
add a comment |
1 Answer
1
active
oldest
votes
1
You can achieve this by using rl.setPrompt() method.
Consider this example
const readline = require('readline');
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout,
prompt: '> '
});
rl.prompt();
rl.on('line', (line) => {
if(line.trim()=='change --$'){
rl.setPrompt('$');
}
rl.prompt();
}).on('close', () => {
console.log('Have a great day!');
process.exit(0);
});
I hope it will work for you.
answered Nov 29 '18 at 7:19
AabidAabid
726419
You can accept the answer :)
– Aabid
Nov 29 '18 at 7:30
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
You can achieve this by using rl.setPrompt() method.
Consider this example
const readline = require('readline');
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout,
prompt: '> '
});
rl.prompt();
rl.on('line', (line) => {
if(line.trim()=='change --$'){
rl.setPrompt('$');
}
rl.prompt();
}).on('close', () => {
console.log('Have a great day!');
process.exit(0);
});
I hope it will work for you.
answered Nov 29 '18 at 7:19
AabidAabid
726419
You can accept the answer :)
– Aabid
Nov 29 '18 at 7:30
add a comment |
1
You can achieve this by using rl.setPrompt() method.
Consider this example
const readline = require('readline');
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout,
prompt: '> '
});
rl.prompt();
rl.on('line', (line) => {
if(line.trim()=='change --$'){
rl.setPrompt('$');
}
rl.prompt();
}).on('close', () => {
console.log('Have a great day!');
process.exit(0);
});
I hope it will work for you.
answered Nov 29 '18 at 7:19
AabidAabid
726419
You can accept the answer :)
– Aabid
Nov 29 '18 at 7:30
add a comment |
1
1
1
You can achieve this by using rl.setPrompt() method.
Consider this example
const readline = require('readline');
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout,
prompt: '> '
});
rl.prompt();
rl.on('line', (line) => {
if(line.trim()=='change --$'){
rl.setPrompt('$');
}
rl.prompt();
}).on('close', () => {
console.log('Have a great day!');
process.exit(0);
});
I hope it will work for you.
answered Nov 29 '18 at 7:19
AabidAabid
726419
You can achieve this by using rl.setPrompt() method.
Consider this example
const readline = require('readline');
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout,
prompt: '> '
});
rl.prompt();
rl.on('line', (line) => {
if(line.trim()=='change --$'){
rl.setPrompt('$');
}
rl.prompt();
}).on('close', () => {
console.log('Have a great day!');
process.exit(0);
});
I hope it will work for you.
answered Nov 29 '18 at 7:19
AabidAabid
726419
answered Nov 29 '18 at 7:19
AabidAabid
726419
answered Nov 29 '18 at 7:19
AabidAabid
726419
answered Nov 29 '18 at 7:19
AabidAabid
726419
726419
You can accept the answer :)
– Aabid
Nov 29 '18 at 7:30
add a comment |
You can accept the answer :)
– Aabid
Nov 29 '18 at 7:30
You can accept the answer :)
– Aabid
Nov 29 '18 at 7:30
You can accept the answer :)
– Aabid
Nov 29 '18 at 7:30
add a comment |
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you want the cli user would be able to change the
>to$– Aabid
Nov 29 '18 at 6:40
yes you are correct, @Aabid
– Nandha Frost
Nov 29 '18 at 7:02
How user can change he will simply enter
$and will change? please explain more why you want to do this.– Aabid
Nov 29 '18 at 7:06
ok, lets consider the prompt is started the user
Welcome to CLI and in next line he has >. now he is typing the commandchange --$, then from the next line CLI should use$. Hope you understood, for any more information let me know.– Nandha Frost
Nov 29 '18 at 7:16