Работа над парсером html -> fb2

server/core/BookConverter/index.js

@@ -1,5 +1,7 @@
 const fs = require('fs-extra');
-const FileDetector = require('./FileDetector');
+const FileDetector = require('../FileDetector');
+const URL = require('url').URL;
+const EasySAXParser = require('./easysax');
 
 class BookConverter {
     constructor() {
@@ -17,6 +19,14 @@ class BookConverter {
                 return;
             }
 
+            const parsedUrl = new URL(url);
+            if (parsedUrl.hostname == 'samlib.ru' ||
+                parsedUrl.hostname == 'budclub.ru') {
+                await fs.writeFile(outputFile, await this.convertSamlib(data));
+                return;
+            }
+
+
             //Заглушка
             await fs.writeFile(outputFile, data);
             callback(100);
@@ -27,6 +37,107 @@ class BookConverter {
                 throw new Error(`unsupported file format: ${url}`);
         }
     }
+
+    async convertSamlib(data) {
+        let fb2 = [{parentName: 'description'}];
+        let path = '';
+        let tag = '';
+
+        let inText = false;
+
+        const parser = new EasySAXParser();
+
+        parser.on('error', (msgError) => {// eslint-disable-line no-unused-vars
+        });
+
+        parser.on('startNode', (elemName, getAttr, isTagEnd, getStrNode) => {// eslint-disable-line no-unused-vars
+            if (elemName == 'xxx7')
+                inText = !inText;
+
+            if (!inText) {
+                path += '/' + elemName;
+                tag = elemName;
+console.log(path);
+            }
+
+        });
+
+        parser.on('endNode', (elemName, isTagStart, getStrNode) => {// eslint-disable-line no-unused-vars
+            if (!inText) {
+                const oldPath = path;
+                let t = '';
+                do  {
+                    let i = path.lastIndexOf('/');
+                    t = path.substr(i + 1);
+                    path = path.substr(0, i);
+                } while (t != elemName && path);
+
+                if (t != elemName) {
+                    path = oldPath;
+                }
+
+                let i = path.lastIndexOf('/');
+                tag = path.substr(i + 1);
+
+    console.log('cl', elemName);            
+    console.log('tag', tag);            
+    console.log(path);
+            }
+        });
+
+        parser.on('textNode', (text) => {// eslint-disable-line no-unused-vars
+        });
+
+        parser.on('cdata', (data) => {// eslint-disable-line no-unused-vars
+        });
+
+        parser.on('comment', (text) => {// eslint-disable-line no-unused-vars
+        });
+
+        /*
+        parser.on('progress', async(progress) => {
+            callback(...........);
+        });
+        */
+
+        await parser.parse(data);
+
+        return this.formatFb2(fb2);
+    }
+
+    formatFb2(fb2) {
+        let out = '<?xml version="1.0" encoding="utf-8"?>';
+        out += '<FictionBook xmlns="http://www.gribuser.ru/xml/fictionbook/2.0" xmlns:l="http://www.w3.org/1999/xlink">';
+        out += this.formatFb2Node(fb2);
+        out += '</FictionBook>';
+console.log(out);
+        return out;
+    }
+
+    formatFb2Node(node, name) {
+        let out = '';
+        if (Array.isArray(node)) {
+            for (const n of node) {
+                out += this.formatFb2Node(n);
+            }
+        } else {
+            if (node.parentName)
+                name = node.parentName;
+            if (!name)
+                throw new Error(`malformed fb2 object`);
+
+            out += `<${name}>`;
+            for (let nodeName in node) {
+                if (nodeName == 'parentName')
+                    continue;
+
+                const n = node[nodeName];
+                out += this.formatFb2Node(n, nodeName);
+            }
+            out += `</${name}>`;
+        }
+        return out;
+    }
 }
 
 module.exports = BookConverter;