js/webpack_util/utils.js

   1 const path = require('path');
   2 const fs = require('fs');
   3
   4 const JSAN_adaptor = path.resolve(__dirname, 'adaptor.js');
   5 const common_js_regex = /(?<=(?:[\r\n]+|^))\s*require *\( *(?:"(.*?)"|'(.*?)') *\) *;?\s*/g;
   6 const import_regex = /(?<=(?:[\r\n]+|^))\s*import +(?:"(.*?)"|'(.*?)') *;?\s*/g;
   7
   8 // Converts source path to a JSAN-style string
   9 function src_path_to_JSAN(legacy,src_path){
  10         src_path = path.resolve(__dirname, src_path);
  11         var relative_src_path = path.relative(legacy, src_path);
  12         var JSAN_id = relative_src_path
  13                 .replace(/\.js$/,"")
  14                 .replace(/\//g,".")
  15                 .replace(/^\.*/,"");
  16         return `JSAN.use("${JSAN_id}");\n`;
  17 }
  18
  19 // Converts JSAN include to a source path
  20 function JSAN_to_src_path(legacy,jsan){
  21         var JSAN_path = jsan
  22                 .replace(/^JSAN\.use\(["']/,"")
  23                 .replace(/["']\);\s*$/,"")
  24                 .replace(/\./g,"/")
  25                 .replace(/(\.js)?$/,".js");
  26         src_path = path.resolve(legacy, JSAN_path);
  27         return src_path;
  28 }
  29
  30 // Checks if one path is contained in another
  31 function isChildOf(child, parent){
  32         child = path.resolve(__dirname, child);
  33         parent = path.resolve(__dirname, parent);
  34         if (child === parent) return false
  35         const parentTokens = parent.split('/').filter(i => i.length)
  36         const childTokens = child.split('/').filter(i => i.length)
  37         return parentTokens.every((t, i) => childTokens[i] === t)
  38 }
  39
  40 module.exports = {
  41         'JSAN_adaptor':JSAN_adaptor,
  42         'common_js_regex':common_js_regex,
  43         'import_regex':import_regex,
  44         'src_path_to_JSAN':src_path_to_JSAN,
  45         'JSAN_to_src_path':JSAN_to_src_path,
  46         'isChildOf':isChildOf
  47 };