Spaces:
Runtime error
Runtime error
File size: 1,877 Bytes
4a51346 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 |
'use strict';
const utils = require('./utils');
/**
* Render a placeholder value with cursor and styling based on the
* position of the cursor.
*
* @param {Object} `prompt` Prompt instance.
* @param {String} `input` Input string.
* @param {String} `initial` The initial user-provided value.
* @param {Number} `pos` Current cursor position.
* @param {Boolean} `showCursor` Render a simulated cursor using the inverse primary style.
* @return {String} Returns the styled placeholder string.
* @api public
*/
module.exports = (prompt, options = {}) => {
prompt.cursorHide();
let { input = '', initial = '', pos, showCursor = true, color } = options;
let style = color || prompt.styles.placeholder;
let inverse = utils.inverse(prompt.styles.primary);
let blinker = str => inverse(prompt.styles.black(str));
let output = input;
let char = ' ';
let reverse = blinker(char);
if (prompt.blink && prompt.blink.off === true) {
blinker = str => str;
reverse = '';
}
if (showCursor && pos === 0 && initial === '' && input === '') {
return blinker(char);
}
if (showCursor && pos === 0 && (input === initial || input === '')) {
return blinker(initial[0]) + style(initial.slice(1));
}
initial = utils.isPrimitive(initial) ? `${initial}` : '';
input = utils.isPrimitive(input) ? `${input}` : '';
let placeholder = initial && initial.startsWith(input) && initial !== input;
let cursor = placeholder ? blinker(initial[input.length]) : reverse;
if (pos !== input.length && showCursor === true) {
output = input.slice(0, pos) + blinker(input[pos]) + input.slice(pos + 1);
cursor = '';
}
if (showCursor === false) {
cursor = '';
}
if (placeholder) {
let raw = prompt.styles.unstyle(output + cursor);
return output + cursor + style(initial.slice(raw.length));
}
return output + cursor;
};
|