65 lines
1.9 KiB
JavaScript
65 lines
1.9 KiB
JavaScript
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module.exports = {
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options : {
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yes: ['yes','y'],
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no: ['no','n']
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},
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ask : function (question, defaultvalue, callback, yesvalues, novalues) {
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self = this;
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if (!this.__invalid) {
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this.resetInvalidHandler();
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}
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yesvalues = yesvalues ? yesvalues : this.options.yes;
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novalues = novalues ? novalues : this.options.no;
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yesvalues = yesvalues.map(function(v) { return v.toLowerCase(); });
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novalues = novalues.map(function(v) { return v.toLowerCase(); });
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process.stdout.write(question+" ");
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process.stdin.setEncoding('utf8');
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process.stdin.once('data', function(val){
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var result;
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var cleaned = val.trim().toLowerCase();
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if (cleaned == "" && defaultvalue != null) {
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result = defaultvalue;
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}
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else if (yesvalues.indexOf(cleaned) >= 0) {
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result = true;
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}
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else if (novalues.indexOf(cleaned) >= 0) {
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result = false;
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}
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else {
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self.__invalid(question,defaultvalue,callback,yesvalues,novalues);
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return;
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}
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callback(result);
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}).resume();
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},
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onInvalidHandler: function(callback) {
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this.__invalid = callback;
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},
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_invalidHandler: function(question, defaultvalue, callback, yesvalues, novalues) {
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process.stdout.write("\nInvalid Response.\n");
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process.stdout.write("Answer either yes : ("+ yesvalues.join(', ')+') \n');
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process.stdout.write("Or no: ("+ novalues.join(', ')+') \n\n');
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this.ask(question,defaultvalue,callback,yesvalues,novalues);
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},
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resetInvalidHandler: function() {
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this.onInvalidHandler(this._invalidHandler);
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}
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};
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