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An extension of Node's Readline interface enabling the re-opening of an `Interface` instance after `rl.close()`
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| var readline = require('readline') | |
| var rl = readline.createInterface(process.stdin, process.stdout) | |
| // Re-opens the readline `Interface` instance. Regains control of the `input` and `output` streams | |
| // by restoring listeners removed by the "close" event. | |
| rl.reopen = (function () { | |
| // Change one time event listener for "close" event to a normal event listener. | |
| var onclose = rl.listeners('close')[0] | |
| rl.removeListener('close', onclose) | |
| rl.on('close', onclose.listener) | |
| // Save the `input` and `output` listeners which are removed by the "close" event. | |
| var onkeypress = rl.input.listeners('keypress')[0] | |
| var ontermend = rl.input.listeners('end')[1] | |
| var onresize = rl.output.listeners('resize')[0] | |
| return function () { | |
| if (!this.closed) return | |
| this.resume() | |
| if (this.terminal) { | |
| this._setRawMode(true) | |
| } | |
| this.closed = false | |
| // Restore `input` listeners. | |
| this.input.on('keypress', onkeypress) | |
| this.input.on('end', ontermend) | |
| // Restore `output` listener. | |
| if (this.output !== null && this.output !== undefined) { | |
| this.output.on('resize', onresize) | |
| } | |
| } | |
| })() |
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