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app_vue/node_modules/enquirer/lib/prompts/snippet.js

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+'use strict';
+
+const stripAnsi = require('strip-ansi');
+const interpolate = require('../interpolate');
+const Prompt = require('../prompt');
+
+class SnippetPrompt extends Prompt {
+  constructor(options) {
+    super(options);
+    this.cursorHide();
+    this.reset(true);
+  }
+
+  async initialize() {
+    this.interpolate = await interpolate(this);
+    await super.initialize();
+  }
+
+  async reset(first) {
+    this.state.keys = [];
+    this.state.invalid = new Map();
+    this.state.missing = new Set();
+    this.state.completed = 0;
+    this.state.values = {};
+
+    if (first !== true) {
+      await this.initialize();
+      await this.render();
+    }
+  }
+
+  moveCursor(n) {
+    let item = this.getItem();
+    this.cursor += n;
+    item.cursor += n;
+  }
+
+  dispatch(ch, key) {
+    if (!key.code && !key.ctrl && ch != null && this.getItem()) {
+      this.append(ch, key);
+      return;
+    }
+    this.alert();
+  }
+
+  append(ch, key) {
+    let item = this.getItem();
+    let prefix = item.input.slice(0, this.cursor);
+    let suffix = item.input.slice(this.cursor);
+    this.input = item.input = `${prefix}${ch}${suffix}`;
+    this.moveCursor(1);
+    this.render();
+  }
+
+  delete() {
+    let item = this.getItem();
+    if (this.cursor <= 0 || !item.input) return this.alert();
+    let suffix = item.input.slice(this.cursor);
+    let prefix = item.input.slice(0, this.cursor - 1);
+    this.input = item.input = `${prefix}${suffix}`;
+    this.moveCursor(-1);
+    this.render();
+  }
+
+  increment(i) {
+    return i >= this.state.keys.length - 1 ? 0 : i + 1;
+  }
+
+  decrement(i) {
+    return i <= 0 ? this.state.keys.length - 1 : i - 1;
+  }
+
+  first() {
+    this.state.index = 0;
+    this.render();
+  }
+
+  last() {
+    this.state.index = this.state.keys.length - 1;
+    this.render();
+  }
+
+  right() {
+    if (this.cursor >= this.input.length) return this.alert();
+    this.moveCursor(1);
+    this.render();
+  }
+
+  left() {
+    if (this.cursor <= 0) return this.alert();
+    this.moveCursor(-1);
+    this.render();
+  }
+
+  prev() {
+    this.state.index = this.decrement(this.state.index);
+    this.getItem();
+    this.render();
+  }
+
+  next() {
+    this.state.index = this.increment(this.state.index);
+    this.getItem();
+    this.render();
+  }
+
+  up() {
+    this.prev();
+  }
+
+  down() {
+    this.next();
+  }
+
+  format(value) {
+    let color = this.state.completed < 100 ? this.styles.warning : this.styles.success;
+    if (this.state.submitted === true && this.state.completed !== 100) {
+      color = this.styles.danger;
+    }
+    return color(`${this.state.completed}% completed`);
+  }
+
+  async render() {
+    let { index, keys = [], submitted, size } = this.state;
+
+    let newline = [this.options.newline, '\n'].find(v => v != null);
+    let prefix = await this.prefix();
+    let separator = await this.separator();
+    let message = await this.message();
+
+    let prompt = [prefix, message, separator].filter(Boolean).join(' ');
+    this.state.prompt = prompt;
+
+    let header = await this.header();
+    let error = (await this.error()) || '';
+    let hint = (await this.hint()) || '';
+    let body = submitted ? '' : await this.interpolate(this.state);
+
+    let key = this.state.key = keys[index] || '';
+    let input = await this.format(key);
+    let footer = await this.footer();
+    if (input) prompt += ' ' + input;
+    if (hint && !input && this.state.completed === 0) prompt += ' ' + hint;
+
+    this.clear(size);
+    let lines = [header, prompt, body, footer, error.trim()];
+    this.write(lines.filter(Boolean).join(newline));
+    this.restore();
+  }
+
+  getItem(name) {
+    let { items, keys, index } = this.state;
+    let item = items.find(ch => ch.name === keys[index]);
+    if (item && item.input != null) {
+      this.input = item.input;
+      this.cursor = item.cursor;
+    }
+    return item;
+  }
+
+  async submit() {
+    if (typeof this.interpolate !== 'function') await this.initialize();
+    await this.interpolate(this.state, true);
+
+    let { invalid, missing, output, values } = this.state;
+    if (invalid.size) {
+      let err = '';
+      for (let [key, value] of invalid) err += `Invalid ${key}: ${value}\n`;
+      this.state.error = err;
+      return super.submit();
+    }
+
+    if (missing.size) {
+      this.state.error = 'Required: ' + [...missing.keys()].join(', ');
+      return super.submit();
+    }
+
+    let lines = stripAnsi(output).split('\n');
+    let result = lines.map(v => v.slice(1)).join('\n');
+    this.value = { values, result };
+    return super.submit();
+  }
+}
+
+module.exports = SnippetPrompt;