project-loader

const loaderUtils = require('loader-utils');
const fs = require('fs')
const path = require('path')
module.exports = function (source){
    const options = loaderUtils.getOptions(this);
    var filePath = this.resourcePath
    var placeHolder = options.placeHolder || '{{_projectholder_}}'
    var pattern = options.pattern || /@.*vue/
    var name = options.name || ''
    var content = fs.readFileSync(filePath, 'utf-8')
    var contentArray = content.split('\n')
    for(let i=0;i<contentArray.length;i++){
        let str = contentArray[i];
        if(str.indexOf(placeHolder) < 0) continue;
        let matched = str.match(pattern);
        if(!matched) continue;
        let matchUrl = matched[0];
        let replacedUrl1 = matchUrl.replace(placeHolder, name).replace('@','src');
        let replacedUrlBase = matchUrl.replace(placeHolder, '').replace('@','src');
        if(fs.existsSync(replacedUrl1)) {
            contentArray[i] = str.replace(placeHolder, name);
            continue;
        }else if(fs.existsSync(replacedUrlBase)){
            contentArray[i] = str.replace(placeHolder, '');
            continue;
        }else{
            contentArray[i] = str.replace(matchUrl, '@/components/blank.vue');
        }
    }
    content = contentArray.join('\n')
    return content;
}

function resolve(dir) {
    return path.join(__dirname, '..', dir)
}