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天文台pc/tianwentai-ui/node_modules/picomatch/lib/utils.js 1.95 KB
bc518174   王天杨   提交两个项目文件
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  /*global navigator*/
  'use strict';
  
  const {
    REGEX_BACKSLASH,
    REGEX_REMOVE_BACKSLASH,
    REGEX_SPECIAL_CHARS,
    REGEX_SPECIAL_CHARS_GLOBAL
  } = require('./constants');
  
  exports.isObject = val => val !== null && typeof val === 'object' && !Array.isArray(val);
  exports.hasRegexChars = str => REGEX_SPECIAL_CHARS.test(str);
  exports.isRegexChar = str => str.length === 1 && exports.hasRegexChars(str);
  exports.escapeRegex = str => str.replace(REGEX_SPECIAL_CHARS_GLOBAL, '\\$1');
  exports.toPosixSlashes = str => str.replace(REGEX_BACKSLASH, '/');
  
  exports.isWindows = () => {
    if (typeof navigator !== 'undefined' && navigator.platform) {
      const platform = navigator.platform.toLowerCase();
      return platform === 'win32' || platform === 'windows';
    }
  
    if (typeof process !== 'undefined' && process.platform) {
      return process.platform === 'win32';
    }
  
    return false;
  };
  
  exports.removeBackslashes = str => {
    return str.replace(REGEX_REMOVE_BACKSLASH, match => {
      return match === '\\' ? '' : match;
    });
  };
  
  exports.escapeLast = (input, char, lastIdx) => {
    const idx = input.lastIndexOf(char, lastIdx);
    if (idx === -1) return input;
    if (input[idx - 1] === '\\') return exports.escapeLast(input, char, idx - 1);
    return `${input.slice(0, idx)}\\${input.slice(idx)}`;
  };
  
  exports.removePrefix = (input, state = {}) => {
    let output = input;
    if (output.startsWith('./')) {
      output = output.slice(2);
      state.prefix = './';
    }
    return output;
  };
  
  exports.wrapOutput = (input, state = {}, options = {}) => {
    const prepend = options.contains ? '' : '^';
    const append = options.contains ? '' : '$';
  
    let output = `${prepend}(?:${input})${append}`;
    if (state.negated === true) {
      output = `(?:^(?!${output}).*$)`;
    }
    return output;
  };
  
  exports.basename = (path, { windows } = {}) => {
    const segs = path.split(windows ? /[\\/]/ : '/');
    const last = segs[segs.length - 1];
  
    if (last === '') {
      return segs[segs.length - 2];
    }
  
    return last;
  };