mirror of
https://github.com/Ylianst/MeshAgent
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73 lines
3.3 KiB
JavaScript
73 lines
3.3 KiB
JavaScript
/*
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Copyright 2022 Intel Corporation
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@author Bryan Roe
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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//
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// This code sample/snippet illustrates how to hookup stdin, so that input can be read.
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// In this particular case, we are using stdin to read a password
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//
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console.log('Starting Test...');
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console.echo = false; // This disables local echo to the console when keys are pressed
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console.canonical = false; // This takes the console out of canonical mode, which means stdin will process each key press individually, instead of by line.
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// On first use of process.stdin, will cause the runtime to create a stream object, and hook it up so that it can be used to read from stdin, either by piping it, or by registering for events
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process.stdin.chars = ''; // This is where we will store the result
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process.stdin.on('data', function (c)
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{
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switch(c[0])
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{
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case 127: // Linux Backspace
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case 8: // Windows Backspace
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process.stdout.write('\r');
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for (i = 0; i < this.chars.length; ++i)
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{
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process.stdout.write(' '); // Whenever BS is pressed, we need to clear the entire line, so we can redraw the '*' characters
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// The order is important. We must clear the entire line first, because when we redraw the '*', the cursor will
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// remain at that location, so if another key is pressed, the next '*' will be drawn there... If we only clear the removed '*',
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// the cursor will be left in the wrong position for when the next key is pressed.
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}
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process.stdout.write('\r');
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if (this.chars.length > 0) { this.chars = this.chars.substring(0,this.chars.length-1); } // On BS press, we will remove the last character we saved
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for (i = 0; i < this.chars.length; ++i)
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{
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process.stdout.write('*'); // Output a '*' to the console for each character that we have saved
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}
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break;
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case 10: // Linux CR
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case 13: // Windows CR
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console.log('\nPWD=' + this.chars); // When CR is pressed, we are done, and will simply dump what we saved to show what we captured
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process.exit();
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break;
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default:
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this.chars += c.toString();
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process.stdout.write('*'); // For each key press, we will output a '*' to the console
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break;
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}
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});
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process.on('exit', function ()
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{
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// On POSIX, it is very important that we reset the console back to its normal/default settings... Otherwise,
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// if we exit the app while the console is still set with echo and canonical disabled, it will remain in that state
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// making it difficult for the user to know whats going on when trying to interact with the console.
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console.echo = true;
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console.canonical = true;
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}); |