Работа над конвертером Pdf

server/core/BookConverter/ConvertPdf.js

@@ -0,0 +1,81 @@
+const fs = require('fs-extra');
+
+const sax = require('./sax');
+const utils = require('../utils');
+const ConvertHtml = require('./ConvertHtml');
+
+class ConvertPdf extends ConvertHtml {
+    check(data, opts) {
+        const {inputFiles} = opts;
+
+        return this.config.useExternalBookConverter && 
+            inputFiles.sourceFileType && inputFiles.sourceFileType.ext == 'pdf';
+    }
+
+    async run(notUsed, opts) {
+        if (!this.check(notUsed, opts))
+            return false;
+        await this.checkExternalConverterPresent();
+
+        const {inputFiles, callback} = opts;
+
+        const outFile = `${inputFiles.fileListDir}/${utils.randomHexString(10)}.xml`;
+
+        //конвертируем в xml
+        await this.execConverter(this.pdfToHtmlPath, ['-c', '-s', '-xml', inputFiles.sourceFile, outFile]);
+        callback(50);
+
+        const data = await fs.readFile(outFile);
+        callback(60);
+
+        //парсим xml
+        let lines = [];
+        let inText = false;
+        let title = '';
+        let i = -1;
+
+        const onTextNode = (text, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
+            if (!cutCounter && inText) {
+                lines[i].text += text + ' ';
+                if (i < 2)
+                    title += text + ' ';
+            }
+        };
+
+        const onStartNode = (tag, tail, singleTag, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
+            if (!cutCounter) {
+                if (tag == 'text' && !inText) {
+                    inText = true;
+                    i++;
+
+                    let attrs = sax.getAttrsSync(tail);
+                    lines[i] = {
+                        text: '',
+                        top: (attrs.top && attrs.top.value ? attrs.top.value : null),
+                        left: (attrs.left && attrs.left.value ? attrs.left.value : null),
+                    };
+                }
+            }
+        };
+
+        const onEndNode = (tag, tail, singleTag, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
+            if (tag == 'text')
+                inText = false;
+        };
+
+        let buf = this.decode(data).toString();
+        sax.parseSync(buf, {
+            onStartNode, onEndNode, onTextNode
+        });
+
+        //найдем параграфы и отступы
+console.log(lines.length);
+        //формируем текст
+        let text = ''
+
+        text = title + "\n" + text;
+        return await super.run(Buffer.from(text), {skipCheck: true, isText: true});
+    }
+}
+
+module.exports = ConvertPdf;

server/core/BookConverter/index.js

@@ -3,6 +3,7 @@ const FileDetector = require('../FileDetector');
 
 //порядок важен
 const convertClassFactory = [
+    require('./ConvertPdf'),
     require('./ConvertRtf'),
     require('./ConvertDocX'),
     require('./ConvertDoc'),

server/core/FileDecompressor.js

@@ -15,6 +15,8 @@ class FileDecompressor {
     }
 
     async decompressFile(filename, outputDir) {
+        await fs.ensureDir(outputDir);
+        
         const fileType = await this.detector.detectFile(filename);
 
         let result = {