Рефакторинг - вынес методы конвертирования в отдельные классы

server/core/BookConverter/ConvertBase.js

@@ -0,0 +1,96 @@
+const iconv = require('iconv-lite');
+const chardet = require('chardet');
+const textUtils = require('./textUtils');
+
+class ConvertBase {
+    constructor(config) {
+        this.config = config;
+    }
+
+    run(data, opts) {// eslint-disable-line no-unused-vars
+        //override
+    }
+
+    decode(data) {
+        let selected = textUtils.getEncoding(data);
+
+        if (selected == 'ISO-8859-5') {
+            const charsetAll = chardet.detectAll(data.slice(0, 20000));
+            for (const charset of charsetAll) {
+                if (charset.name.indexOf('ISO-8859') < 0) {
+                    selected = charset.name;
+                    break;
+                }
+            }
+        }
+
+        if (selected.toLowerCase() != 'utf-8')
+            return iconv.decode(data, selected);
+        else
+            return data;
+    }
+
+    repSpaces(text) {
+        return text.replace(/&nbsp;|[\t\n\r]/g, ' ');
+    }
+
+    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>';
+        return out;
+    }
+
+    formatFb2Node(node, name) {
+        let out = '';
+
+        if (Array.isArray(node)) {
+            for (const n of node) {
+                out += this.formatFb2Node(n);
+            }
+        } else if (typeof node == 'string') {
+            if (name)
+                out += `<${name}>${this.repSpaces(node)}</${name}>`;
+            else
+                out += this.repSpaces(node);
+        } else {
+            if (node._n)
+                name = node._n;
+
+            let attrs = '';
+            if (node._attrs) {
+                for (let attrName in node._attrs) {
+                    attrs += ` ${attrName}="${node._attrs[attrName]}"`;
+                }
+            }
+
+            let tOpen = '';
+            let tBody = '';
+            let tClose = '';
+            if (name)
+                tOpen += `<${name}${attrs}>`;
+            if (node.hasOwnProperty('_t'))
+                tBody += this.repSpaces(node._t);
+
+            for (let nodeName in node) {
+                if (nodeName && nodeName[0] == '_' && nodeName != '_a')
+                    continue;
+
+                const n = node[nodeName];
+                tBody += this.formatFb2Node(n, nodeName);
+            }
+            
+            if (name)
+                tClose += `</${name}>`;
+
+            if (attrs == '' && name == 'p' && tBody.trim() == '')
+                out += '<empty-line/>'
+            else
+                out += `${tOpen}${tBody}${tClose}`;
+        }
+        return out;
+    }
+}
+
+module.exports = ConvertBase;

server/core/BookConverter/ConvertFb2.js

@@ -0,0 +1,41 @@
+const ConvertBase = require('./ConvertBase');
+const iconv = require('iconv-lite');
+
+class ConvertFb2 extends ConvertBase {
+    check(data, opts) {
+        const {fileType} = opts;
+
+        return (fileType && fileType.ext == 'xml' && data.toString().indexOf('<FictionBook') >= 0);
+    }
+
+    run(data, opts) {
+        if (!this.check(data, opts))
+            return false;
+
+        return this.checkEncoding(data);
+    }
+
+    checkEncoding(data) {
+        let result = data;
+
+        const left = data.indexOf('<?xml version="1.0"');
+        if (left >= 0) {
+            const right = data.indexOf('?>', left);
+            if (right >= 0) {
+                const head = data.slice(left, right + 2).toString();
+                const m = head.match(/encoding="(.*)"/);
+                if (m) {
+                    let encoding = m[1].toLowerCase();
+                    if (encoding != 'utf-8') {
+                        result = iconv.decode(data, encoding);
+                        result = Buffer.from(result.toString().replace(m[0], 'encoding="utf-8"'));
+                    }
+                }
+            }
+        }
+
+        return result;
+    }
+}
+
+module.exports = ConvertFb2;

server/core/BookConverter/ConvertHtml.js

@@ -0,0 +1,162 @@
+const ConvertBase = require('./ConvertBase');
+const sax = require('./sax');
+const textUtils = require('./textUtils');
+
+class ConvertHtml extends ConvertBase {
+    check(data, opts) {
+        const {fileType} = opts;
+
+        if (fileType && (fileType.ext == 'html' || fileType.ext == 'xml')) 
+            return {isText: false};
+
+        //может это чистый текст?
+        if (textUtils.checkIfText(data)) {
+            return {isText: true};
+        }
+
+        return false;
+    }
+
+    run(data, opts) {
+        const checkResult = this.check(data, opts);
+        if (!checkResult)
+            return false;
+
+        let {isText} = checkResult;
+        let titleInfo = {};
+        let desc = {_n: 'description', 'title-info': titleInfo};
+        let pars = [];
+        let body = {_n: 'body', section: {_a: []}};
+        let fb2 = [desc, body];
+
+        let title = '';
+        let inTitle = false;
+
+        let spaceCounter = [];
+
+        const repCrLfTab = (text) => text.replace(/[\n\r]/g, '').replace(/\t/g, '    ');
+
+        const newParagraph = () => {
+            pars.push({_n: 'p', _t: ''});
+        };
+
+        const growParagraph = (text) => {
+            if (!pars.length)
+                newParagraph();
+
+            const l = pars.length;
+            if (pars[l - 1]._t == '')
+                text = text.trimLeft();
+            pars[l - 1]._t += text;
+
+            //посчитаем отступы у текста, чтобы выделить потом параграфы
+            const lines = text.split('\n');
+            for (let line of lines) {
+                line = repCrLfTab(line)
+
+                let l = 0;
+                while (l < line.length && line[l] == ' ') {
+                    l++;
+                }
+                if (!spaceCounter[l])
+                    spaceCounter[l] = 0;
+                spaceCounter[l]++;
+            }
+        };
+
+        const newPara = new Set(['tr', 'br', 'br/', 'dd', 'p', 'title', '/title', 'h1', 'h2', 'h3', '/h1', '/h2', '/h3']);
+
+        const onTextNode = (text, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
+            if (!cutCounter) {
+                growParagraph(text);
+            }
+
+            if (inTitle && !title)
+                title = text;
+        };
+
+        const onStartNode = (tag, tail, singleTag, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
+            if (!cutCounter) {
+                if (newPara.has(tag))
+                    newParagraph();
+            }
+
+            if (tag == 'title')
+                inTitle = true;
+        };
+
+        const onEndNode = (tag, tail, singleTag, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
+            if (tag == 'title')
+                inTitle = false;
+        };
+
+        let buf = this.decode(data).toString();
+
+        sax.parseSync(buf, {
+            onStartNode, onEndNode, onTextNode,
+            innerCut: new Set(['head', 'script', 'style', 'binary'])
+        });
+
+        titleInfo['book-title'] = title;
+
+        //подозрение на чистый текст, надо разбить на параграфы
+        if (isText || pars.length < buf.length/2000) {
+            let total = 0;
+            for (let i = 0; i < spaceCounter.length; i++) {
+                total += (spaceCounter[i] ? spaceCounter[i] : 0);
+            }
+            total /= 10;
+            let i = spaceCounter.length - 1;
+            while (i > 0 && (!spaceCounter[i] || spaceCounter[i] < total)) i--;
+
+            const parIndent = (i > 0 ? i : 0);
+
+            let newPars = [];
+            const newPar = () => {
+                newPars.push({_n: 'p', _t: ''});
+            };
+
+            const growPar = (text) => {
+                if (!newPars.length)
+                    newPar();
+
+                const l = newPars.length;
+                newPars[l - 1]._t += text;
+            }
+
+            i = 0;
+            for (const par of pars) {
+                if (i > 0)
+                    newPar();
+                i++;
+
+                const lines = par._t.split('\n');
+                for (let line of lines) {
+                    line = repCrLfTab(line);
+
+                    let l = 0;
+                    while (l < line.length && line[l] == ' ') {
+                        l++;
+                    }
+
+                    if (l >= parIndent)
+                        newPar();
+                    growPar(line.trim() + ' ');
+                }
+            }
+
+            body.section._a[0] = newPars;
+        } else {
+            body.section._a[0] = pars;
+        }
+
+        //убираем лишнее
+        for (let i = 0; i < pars.length; i++)
+            pars[i]._t = this.repSpaces(pars[i]._t).trim();
+
+        return this.formatFb2(fb2);
+    }
+
+}
+
+module.exports = ConvertHtml;

server/core/BookConverter/ConvertSamlib.js

@@ -0,0 +1,275 @@
+const _ = require('lodash');
+const URL = require('url').URL;
+
+const sax = require('./sax');
+const ConvertBase = require('./ConvertBase');
+
+class ConvertSamlib extends ConvertBase {
+    check(data, opts) {
+        const {url} = opts;
+
+        const parsedUrl = new URL(url);
+        if (parsedUrl.hostname == 'samlib.ru' ||
+            parsedUrl.hostname == 'budclub.ru' ||
+            parsedUrl.hostname == 'zhurnal.lib.ru') {
+            return {hostname: parsedUrl.hostname};
+        }
+
+        return false;
+    }
+
+    run(data, opts) {
+        const checkResult = this.check(data, opts);
+        if (!checkResult)
+            return false;
+
+        const {hostname} = checkResult;
+        let titleInfo = {};
+        let desc = {_n: 'description', 'title-info': titleInfo};
+        let pars = [];
+        let body = {_n: 'body', section: {_a: pars}};
+        let fb2 = [desc, body];
+
+        let inSubtitle = false;
+        let inJustify = true;
+        let inImage = false;
+        let isFirstPara = false;
+        let path = '';
+        let tag = '';// eslint-disable-line no-unused-vars
+
+        let inText = false;
+        let textFound = false;
+        let node = {_a: pars};
+
+        let inPara = false;
+        let italic = false;
+        let bold = false;
+
+        const openTag = (name, attrs) => {
+            if (name == 'p')
+                inPara = true;
+            let n = {_n: name, _attrs: attrs, _a: [], _p: node};
+            node._a.push(n);
+            node = n;
+        };
+
+        const closeTag = (name) => {
+            if (name == 'p')
+                inPara = false;
+            if (node._p) {
+                const exact = (node._n == name);
+                node = node._p;
+                if (!exact)
+                    closeTag(name);
+            }
+        };
+
+        const growParagraph = (text) => {
+            if (!node._p) {
+                if (text.trim() != '')
+                    openTag('p');
+                else
+                    return;
+            }
+            if (node._n == 'p' && node._a.length == 0)
+                text = text.trimLeft();
+            node._a.push({_t: text});
+        };
+
+        const onStartNode = (elemName, tail, singleTag, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
+            if (elemName == '')
+                return;
+            if (!inText) {
+                path += '/' + elemName;
+                tag = elemName;
+            } else {
+                switch (elemName) {
+                    case 'li':
+                    case 'p':
+                    case 'dd':
+                    case 'br':
+                        if (!(inSubtitle && isFirstPara)) {
+                            if (inPara)
+                                closeTag('p');
+                            openTag('p');
+                        }
+                        isFirstPara = false;
+                        break;
+                    case 'h1':
+                    case 'h2':
+                    case 'h3':
+                        if (inPara)
+                            closeTag('p');
+                        openTag('p');
+                        bold = true;
+                        break;
+                    case 'i':
+                    case 'em':
+                        italic = true;
+                        break;
+                    case 'b':
+                    case 'strong':
+                        bold = true;
+                        break;
+                    case 'div':
+                        if (inPara)
+                            closeTag('p');
+                        if (tail.indexOf('align="center"') >= 0) {
+                            openTag('subtitle');
+                            inSubtitle = true;
+                            isFirstPara = true;
+                        }
+
+                        if (tail.indexOf('align="justify"') >= 0) {
+                            openTag('p');
+                            inJustify = true;
+                        }
+
+                        break;
+                    case 'img': {
+                        if (inPara)
+                            closeTag('p');
+                        const attrs = sax.getAttrsSync(tail);
+                        if (attrs.src && attrs.src.value) {
+                            let href = attrs.src.value;
+                            if (href[0] == '/')
+                                href = `http://${hostname}${href}`;
+                            openTag('image', {href});
+                            inImage = true;
+                        }
+                        break;
+                    }
+                }
+            }
+        };
+
+        const onEndNode = (elemName, tail, singleTag, cutCounter, cutTag) => {// 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);
+            } else {
+                switch (elemName) {
+                    case 'li':
+                    case 'p':
+                    case 'dd':
+                        closeTag('p');
+                        break;
+                    case 'h1':
+                    case 'h2':
+                    case 'h3':
+                        closeTag('p');
+                        bold = false;
+                        break;
+                    case 'i':
+                    case 'em':
+                        italic = false;
+                        break;
+                    case 'b':
+                    case 'strong':
+                        bold = false;
+                        break;
+                    case 'div':
+                        if (inSubtitle) {
+                            closeTag('subtitle');
+                            inSubtitle = false;
+                            isFirstPara = false;
+                        }
+
+                        if (inJustify) {
+                            closeTag('p');
+                            inJustify = false;
+                        }
+                        break;
+                    case 'img':
+                        if (inImage)
+                            closeTag('image');
+                        inImage = false;
+                        break;
+                }
+            }
+        };
+
+        const onComment = (text) => {// eslint-disable-line no-unused-vars
+            if (text == '--------- Собственно произведение -------------') {
+                inText = true;
+                textFound = true;
+            }
+            if (text == '-----------------------------------------------')
+                inText = false;
+        };
+
+        const onTextNode = (text) => {// eslint-disable-line no-unused-vars
+            if (text && text.trim() == '')
+                text = (text.indexOf(' ') >= 0 ? ' ' : '');
+
+            if (!text)
+                return;
+
+            switch (path) {
+                case '/html/body/center/h2':
+                    titleInfo['book-title'] = text;
+                    return;
+                case '/html/body/div/h3':
+                    if (!titleInfo.author)
+                        titleInfo.author = {};
+                    text = text.replace(':', '').trim().split(' ');
+                    if (text[0])
+                        titleInfo.author['last-name'] = text[0];
+                    if (text[1])
+                        titleInfo.author['first-name'] = text[1];
+                    if (text[2])
+                        titleInfo.author['middle-name'] = text[2];
+                    return;
+            }
+
+            let tOpen = (bold ? '<strong>' : '');
+            tOpen += (italic ? '<emphasis>' : '');
+            let tClose = (italic ? '</emphasis>' : '');
+            tClose += (bold ? '</strong>' : '');
+
+            if (inText)
+                growParagraph(`${tOpen}${text}${tClose}`);
+        };
+
+        sax.parseSync(this.decode(data).toString().replace(/&nbsp;/g, ' '), {
+            onStartNode, onEndNode, onTextNode, onComment,
+            innerCut: new Set(['head', 'script', 'style'])
+        });
+
+        //текст не найден на странице, обработать корректно не получилось
+        if (!textFound)
+            return false;
+
+        const title = (titleInfo['book-title'] ? titleInfo['book-title'] : '');
+        let author = '';
+        if (titleInfo.author) {
+            author = _.compact([
+                (titleInfo.author['last-name'] ? titleInfo.author['last-name'] : ''),
+                (titleInfo.author['first-name'] ? titleInfo.author['first-name'] : ''),
+                (titleInfo.author['middle-name'] ? titleInfo.author['middle-name'] : ''),
+            ]).join(' ');
+        }
+
+        pars.unshift({_n: 'title', _a: [
+            {_n: 'p', _t: author}, {_n: 'p', _t: ''},
+            {_n: 'p', _t: title}, {_n: 'p', _t: ''},
+        ]})
+
+        return this.formatFb2(fb2);
+    }
+
+}
+
+module.exports = ConvertSamlib;

server/core/BookConverter/index.js

@@ -1,536 +1,45 @@
 const fs = require('fs-extra');
-const URL = require('url').URL;
-const iconv = require('iconv-lite');
-const chardet = require('chardet');
-const _ = require('lodash');
-const sax = require('./sax');
-const textUtils = require('./textUtils');
-
 const FileDetector = require('../FileDetector');
 
-const repSpaces = (text) => text.replace(/ |[\t\n\r]/g, ' ');
-const repSpaces2 = (text) => text.replace(/[\n\r]/g, '');
-const repSpaces3 = (text) => text.replace(/ /g, ' ');
+//порядок важен
+const convertClassFactory = [
+    require('./ConvertFb2'),
+    require('./ConvertSamlib'),
+    require('./ConvertHtml'),
+];
 
 class BookConverter {
-    constructor() {
+    constructor(config) {
         this.detector = new FileDetector();
+
+        this.convertFactory = [];
+        for (const convertClass of convertClassFactory) {
+            this.convertFactory.push(new convertClass(config));
+        }
     }
 
     async convertToFb2(inputFile, outputFile, url, callback) {
         const fileType = await this.detector.detectFile(inputFile);
         
         const data = await fs.readFile(inputFile);
-        callback(100);
-
-        if (fileType && (fileType.ext == 'html' || fileType.ext == 'xml')) {
-            if (data.toString().indexOf('<FictionBook') >= 0) {
-                await fs.writeFile(outputFile, this.checkEncoding(data));
-                return;
+        let result = false;
+        for (const convert of this.convertFactory) {
+            result = convert.run(data, {inputFile, url, callback, fileType});
+            if (result) {
+                await fs.writeFile(outputFile, result);
+                break;
             }
+        }
 
-            const parsedUrl = new URL(url);
-            if (parsedUrl.hostname == 'samlib.ru' ||
-                parsedUrl.hostname == 'budclub.ru' ||
-                parsedUrl.hostname == 'zhurnal.lib.ru') {
-                await fs.writeFile(outputFile, this.convertSamlib(data, parsedUrl.hostname));
-                return;
-            }
-
-            await fs.writeFile(outputFile, this.convertHtml(data));
-            return;
-        } else {
+        if (!result) {
             if (fileType)
                 throw new Error(`Этот формат файла не поддерживается: ${fileType.mime}`);
             else {
-                //может это чистый текст?
-                if (textUtils.checkIfText(data)) {
-                    await fs.writeFile(outputFile, this.convertHtml(data, true));
-                    return;
-                }
-
                 throw new Error(`Не удалось определить формат файла: ${url}`);
             }
         }
-    }
 
-    decode(data) {
-        let selected = textUtils.getEncoding(data);
-
-        if (selected == 'ISO-8859-5') {
-            const charsetAll = chardet.detectAll(data.slice(0, 20000));
-            for (const charset of charsetAll) {
-                if (charset.name.indexOf('ISO-8859') < 0) {
-                    selected = charset.name;
-                    break;
-                }
-            }
-        }
-
-        if (selected.toLowerCase() != 'utf-8')
-            return iconv.decode(data, selected);
-        else
-            return data;
-    }
-
-    checkEncoding(data) {
-        let result = data;
-
-        const left = data.indexOf('<?xml version="1.0"');
-        if (left >= 0) {
-            const right = data.indexOf('?>', left);
-            if (right >= 0) {
-                const head = data.slice(left, right + 2).toString();
-                const m = head.match(/encoding="(.*)"/);
-                if (m) {
-                    let encoding = m[1].toLowerCase();
-                    if (encoding != 'utf-8') {
-                        result = iconv.decode(data, encoding);
-                        result = Buffer.from(result.toString().replace(m[0], 'encoding="utf-8"'));
-                    }
-                }
-            }
-        }
-
-        return result;
-    }
-
-    convertHtml(data, isText) {
-        let titleInfo = {};
-        let desc = {_n: 'description', 'title-info': titleInfo};
-        let pars = [];
-        let body = {_n: 'body', section: {_a: []}};
-        let fb2 = [desc, body];
-
-        let title = '';
-        let inTitle = false;
-
-        let spaceCounter = [];
-
-        const newParagraph = () => {
-            pars.push({_n: 'p', _t: ''});
-        };
-
-        const growParagraph = (text) => {
-            if (!pars.length)
-                newParagraph();
-
-            const l = pars.length;
-            if (pars[l - 1]._t == '')
-                text = text.trimLeft();
-            pars[l - 1]._t += text;
-
-            //посчитаем отступы у текста, чтобы выделить потом параграфы
-            const lines = text.split('\n');
-            for (let line of lines) {
-                line = repSpaces2(line).replace(/\t/g, '    ');
-
-                let l = 0;
-                while (l < line.length && line[l] == ' ') {
-                    l++;
-                }
-                if (!spaceCounter[l])
-                    spaceCounter[l] = 0;
-                spaceCounter[l]++;
-            }
-        };
-
-        const newPara = new Set(['tr', 'br', 'br/', 'dd', 'p', 'title', '/title', 'h1', 'h2', 'h3', '/h1', '/h2', '/h3']);
-
-        const onTextNode = (text, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
-            if (!cutCounter) {
-                growParagraph(text);
-            }
-
-            if (inTitle && !title)
-                title = text;
-        };
-
-        const onStartNode = (tag, tail, singleTag, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
-            if (!cutCounter) {
-                if (newPara.has(tag))
-                    newParagraph();
-            }
-
-            if (tag == 'title')
-                inTitle = true;
-        };
-
-        const onEndNode = (tag, tail, singleTag, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
-            if (tag == 'title')
-                inTitle = false;
-        };
-
-        let buf = this.decode(data).toString();
-
-        sax.parseSync(buf, {
-            onStartNode, onEndNode, onTextNode,
-            innerCut: new Set(['head', 'script', 'style'])
-        });
-
-        titleInfo['book-title'] = title;
-
-        //подозрение на чистый текст, надо разбить на параграфы
-        if (isText || pars.length < buf.length/2000) {
-            let total = 0;
-            for (let i = 0; i < spaceCounter.length; i++) {
-                total += (spaceCounter[i] ? spaceCounter[i] : 0);
-            }
-            total /= 10;
-            let i = spaceCounter.length - 1;
-            while (i > 0 && (!spaceCounter[i] || spaceCounter[i] < total)) i--;
-
-            const parIndent = (i > 0 ? i : 0);
-
-            let newPars = [];
-            const newPar = () => {
-                newPars.push({_n: 'p', _t: ''});
-            };
-
-            const growPar = (text) => {
-                if (!newPars.length)
-                    newPar();
-
-                const l = newPars.length;
-                newPars[l - 1]._t += text;
-            }
-
-            i = 0;
-            for (const par of pars) {
-                if (i > 0)
-                    newPar();
-                i++;
-
-                const lines = par._t.split('\n');
-                for (let line of lines) {
-                    line = repSpaces2(line).replace(/\t/g, '    ');
-
-                    let l = 0;
-                    while (l < line.length && line[l] == ' ') {
-                        l++;
-                    }
-
-                    if (l >= parIndent)
-                        newPar();
-                    growPar(line.trim() + ' ');
-                }
-            }
-
-            body.section._a[0] = newPars;
-        } else {
-            body.section._a[0] = pars;
-        }
-
-        //убираем лишнее
-        for (let i = 0; i < pars.length; i++)
-            pars[i]._t = repSpaces(pars[i]._t).trim();
-
-        return this.formatFb2(fb2);
-    }
-
-    convertSamlib(data, hostname) {
-        let titleInfo = {};
-        let desc = {_n: 'description', 'title-info': titleInfo};
-        let pars = [];
-        let body = {_n: 'body', section: {_a: pars}};
-        let fb2 = [desc, body];
-
-        let inSubtitle = false;
-        let inJustify = true;
-        let inImage = false;
-        let isFirstPara = false;
-        let path = '';
-        let tag = '';// eslint-disable-line no-unused-vars
-
-        let inText = false;
-        let textFound = false;
-        let node = {_a: pars};
-
-        let inPara = false;
-        let italic = false;
-        let bold = false;
-
-        const openTag = (name, attrs) => {
-            if (name == 'p')
-                inPara = true;
-            let n = {_n: name, _attrs: attrs, _a: [], _p: node};
-            node._a.push(n);
-            node = n;
-        };
-
-        const closeTag = (name) => {
-            if (name == 'p')
-                inPara = false;
-            if (node._p) {
-                const exact = (node._n == name);
-                node = node._p;
-                if (!exact)
-                    closeTag(name);
-            }
-        };
-
-        const growParagraph = (text) => {
-            if (!node._p) {
-                if (text.trim() != '')
-                    openTag('p');
-                else
-                    return;
-            }
-            if (node._n == 'p' && node._a.length == 0)
-                text = text.trimLeft();
-            node._a.push({_t: text});
-        };
-
-        const onStartNode = (elemName, tail, singleTag, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
-            if (elemName == '')
-                return;
-            if (!inText) {
-                path += '/' + elemName;
-                tag = elemName;
-            } else {
-                switch (elemName) {
-                    case 'li':
-                    case 'p':
-                    case 'dd':
-                    case 'br':
-                        if (!(inSubtitle && isFirstPara)) {
-                            if (inPara)
-                                closeTag('p');
-                            openTag('p');
-                        }
-                        isFirstPara = false;
-                        break;
-                    case 'h1':
-                    case 'h2':
-                    case 'h3':
-                        if (inPara)
-                            closeTag('p');
-                        openTag('p');
-                        bold = true;
-                        break;
-                    case 'i':
-                    case 'em':
-                        italic = true;
-                        break;
-                    case 'b':
-                    case 'strong':
-                        bold = true;
-                        break;
-                    case 'div':
-                        if (inPara)
-                            closeTag('p');
-                        if (tail.indexOf('align="center"') >= 0) {
-                            openTag('subtitle');
-                            inSubtitle = true;
-                            isFirstPara = true;
-                        }
-
-                        if (tail.indexOf('align="justify"') >= 0) {
-                            openTag('p');
-                            inJustify = true;
-                        }
-
-                        break;
-                    case 'img': {
-                        if (inPara)
-                            closeTag('p');
-                        const attrs = sax.getAttrsSync(tail);
-                        if (attrs.src && attrs.src.value) {
-                            let href = attrs.src.value;
-                            if (href[0] == '/')
-                                href = `http://${hostname}${href}`;
-                            openTag('image', {href});
-                            inImage = true;
-                        }
-                        break;
-                    }
-                }
-            }
-        };
-
-        const onEndNode = (elemName, tail, singleTag, cutCounter, cutTag) => {// 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);
-            } else {
-                switch (elemName) {
-                    case 'li':
-                    case 'p':
-                    case 'dd':
-                        closeTag('p');
-                        break;
-                    case 'h1':
-                    case 'h2':
-                    case 'h3':
-                        closeTag('p');
-                        bold = false;
-                        break;
-                    case 'i':
-                    case 'em':
-                        italic = false;
-                        break;
-                    case 'b':
-                    case 'strong':
-                        bold = false;
-                        break;
-                    case 'div':
-                        if (inSubtitle) {
-                            closeTag('subtitle');
-                            inSubtitle = false;
-                            isFirstPara = false;
-                        }
-
-                        if (inJustify) {
-                            closeTag('p');
-                            inJustify = false;
-                        }
-                        break;
-                    case 'img':
-                        if (inImage)
-                            closeTag('image');
-                        inImage = false;
-                        break;
-                }
-            }
-        };
-
-        const onComment = (text) => {// eslint-disable-line no-unused-vars
-            if (text == '--------- Собственно произведение -------------') {
-                inText = true;
-                textFound = true;
-            }
-            if (text == '-----------------------------------------------')
-                inText = false;
-        };
-
-        const onTextNode = (text) => {// eslint-disable-line no-unused-vars
-            if (text && text.trim() == '')
-                text = (text.indexOf(' ') >= 0 ? ' ' : '');
-
-            if (!text)
-                return;
-
-            switch (path) {
-                case '/html/body/center/h2':
-                    titleInfo['book-title'] = text;
-                    return;
-                case '/html/body/div/h3':
-                    if (!titleInfo.author)
-                        titleInfo.author = {};
-                    text = text.replace(':', '').trim().split(' ');
-                    if (text[0])
-                        titleInfo.author['last-name'] = text[0];
-                    if (text[1])
-                        titleInfo.author['first-name'] = text[1];
-                    if (text[2])
-                        titleInfo.author['middle-name'] = text[2];
-                    return;
-            }
-
-            let tOpen = (bold ? '<strong>' : '');
-            tOpen += (italic ? '<emphasis>' : '');
-            let tClose = (italic ? '</emphasis>' : '');
-            tClose += (bold ? '</strong>' : '');
-
-            if (inText)
-                growParagraph(`${tOpen}${text}${tClose}`);
-        };
-
-        sax.parseSync(repSpaces3(this.decode(data).toString()), {
-            onStartNode, onEndNode, onTextNode, onComment,
-            innerCut: new Set(['head', 'script', 'style'])
-        });
-
-        //текст не найден на странице, обрабатываем как html
-        if (!textFound)
-            return this.convertHtml(data);
-
-        const title = (titleInfo['book-title'] ? titleInfo['book-title'] : '');
-        let author = '';
-        if (titleInfo.author) {
-            author = _.compact([
-                (titleInfo.author['last-name'] ? titleInfo.author['last-name'] : ''),
-                (titleInfo.author['first-name'] ? titleInfo.author['first-name'] : ''),
-                (titleInfo.author['middle-name'] ? titleInfo.author['middle-name'] : ''),
-            ]).join(' ');
-        }
-
-        pars.unshift({_n: 'title', _a: [
-            {_n: 'p', _t: author}, {_n: 'p', _t: ''},
-            {_n: 'p', _t: title}, {_n: 'p', _t: ''},
-        ]})
-
-        return this.formatFb2(fb2);
-    }
-
-    formatFb2(fb2) {
-        let out = '<?xml version="1.0" encoding="utf-8"?>';
-        out += '<FictionBook xmlns="http://www.gribuser.ru/xml/fictionbook/2.0" xmlns:l="http://www.w3.org/1999/xlink">';
-        out += this.formatFb2Node(fb2);
-        out += '</FictionBook>';
-        return out;
-    }
-
-    formatFb2Node(node, name) {
-        let out = '';
-
-        if (Array.isArray(node)) {
-            for (const n of node) {
-                out += this.formatFb2Node(n);
-            }
-        } else if (typeof node == 'string') {
-            if (name)
-                out += `<${name}>${repSpaces(node)}</${name}>`;
-            else
-                out += repSpaces(node);
-        } else {
-            if (node._n)
-                name = node._n;
-
-            let attrs = '';
-            if (node._attrs) {
-                for (let attrName in node._attrs) {
-                    attrs += ` ${attrName}="${node._attrs[attrName]}"`;
-                }
-            }
-
-            let tOpen = '';
-            let tBody = '';
-            let tClose = '';
-            if (name)
-                tOpen += `<${name}${attrs}>`;
-            if (node.hasOwnProperty('_t'))
-                tBody += repSpaces(node._t);
-
-            for (let nodeName in node) {
-                if (nodeName && nodeName[0] == '_' && nodeName != '_a')
-                    continue;
-
-                const n = node[nodeName];
-                tBody += this.formatFb2Node(n, nodeName);
-            }
-            
-            if (name)
-                tClose += `</${name}>`;
-
-            if (attrs == '' && name == 'p' && tBody.trim() == '')
-                out += '<empty-line/>'
-            else
-                out += `${tOpen}${tBody}${tClose}`;
-        }
-        return out;
+        callback(100);
     }
 }
 

server/core/FileDetector.js

@@ -9,18 +9,18 @@ detect.addSignature(
     "rules": [
       { "type": "or", "rules":
       [
-        { "type": "contains", "bytes": "3c68746d6c" },
-        { "type": "contains", "bytes": "3c00680074006d006c00" },
+        { "type": "equal", "end": 5, "bytes": "3c68746d6c" },
+        { "type": "equal", "end": 10, "bytes": "3c00680074006d006c00" },
 
-        { "type": "contains", "bytes": "3c21646f6374797065" },
-        { "type": "contains", "bytes": "3c626f6479" },
-        { "type": "contains", "bytes": "3c68656164" },
-        { "type": "contains", "bytes": "3c696672616d65" },
-        { "type": "contains", "bytes": "3c696d67" },
-        { "type": "contains", "bytes": "3c6f626a656374" },
-        { "type": "contains", "bytes": "3c736372697074" },
-        { "type": "contains", "bytes": "3c7461626c65" },
-        { "type": "contains", "bytes": "3c7469746c65" },
+        { "type": "equal", "end": 9, "bytes": "3c21646f6374797065" },
+        { "type": "equal", "end": 5, "bytes": "3c626f6479" },
+        { "type": "equal", "end": 5, "bytes": "3c68656164" },
+        { "type": "equal", "end": 7, "bytes": "3c696672616d65" },
+        { "type": "equal", "end": 4, "bytes": "3c696d67" },
+        { "type": "equal", "end": 7, "bytes": "3c6f626a656374" },
+        { "type": "equal", "end": 7, "bytes": "3c736372697074" },
+        { "type": "equal", "end": 6, "bytes": "3c7461626c65" },
+        { "type": "equal", "end": 6, "bytes": "3c7469746c65" },
       ]
       }
     ]
@@ -36,7 +36,7 @@ detect.addSignature(
     "rules": [
       { "type": "or", "rules":
       [
-        { "type": "contains", "bytes": "3c3f786d6c2076657273696f6e3d22312e3022" },
+        { "type": "equal", "end": 19, "bytes": "3c3f786d6c2076657273696f6e3d22312e3022" },
       ]
       }
     ]

server/core/ReaderWorker.js

@@ -22,7 +22,7 @@ class ReaderWorker {
 
         this.down = new FileDownloader();
         this.decomp = new FileDecompressor();
-        this.bookConverter = new BookConverter();
+        this.bookConverter = new BookConverter(this.config);
 
         if (!singleCleanExecute) {
             this.periodicCleanDir(this.config.tempPublicDir, this.config.maxTempPublicDirSize, 60*60*1000);//1 раз в час
@@ -66,14 +66,14 @@ class ReaderWorker {
             const decompFilename = await this.decomp.decompressFile(downloadedFilename, decompDir);
             wState.set({progress: 100});
             
-            //parse book
+            //конвертирование в fb2
             wState.set({state: 'convert', step: 3, progress: 0});
             convertFilename = `${this.config.tempDownloadDir}/${tempFilename2}`;
             await this.bookConverter.convertToFb2(decompFilename, convertFilename, url, progress => {
                 wState.set({progress});
             });
 
-            //compress file to tmp dir, if not exists with the same hashname
+            //сжимаем файл в tmp, если там уже нет с тем же именем-sha256
             const compFilename = await this.decomp.gzipFileIfNotExists(convertFilename, `${this.config.tempPublicDir}`);
 
             wState.set({progress: 100});