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Перевод pdf-конвертера на использование pdfalto

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This commit is contained in:
Book Pauk
2020-12-07 22:05:01 +07:00
parent 81c38d7749
commit 063d01b5ca
2 changed files with 43 additions and 69 deletions
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111
server/core/Reader/BookConverter/ConvertPdf.js
View File

@@ -24,9 +24,14 @@ class ConvertPdf extends ConvertHtml {
const inpFile = inputFiles.sourceFile;
const outFile = `${inputFiles.filesDir}/${utils.randomHexString(10)}.xml`;
const pdfaltoPath = `${this.config.dataDir}/pdfalto/pdfalto`;
if (!await fs.pathExists(pdfaltoPath))
throw new Error('Внешний конвертер pdfalto не найден');
//конвертируем в xml
let perc = 0;
await this.execConverter(this.pdfToHtmlPath, ['-nodrm', '-c', '-s', '-xml', inpFile, outFile], () => {
await this.execConverter(pdfaltoPath, [inpFile, outFile], () => {
perc = (perc < 80 ? perc + 10 : 40);
callback(perc);
}, abort);
@@ -39,13 +44,10 @@ class ConvertPdf extends ConvertHtml {
let lines = [];
let images = [];
let loading = [];
let inText = false;
let bold = false;
let italic = false;
let title = '';
let prevTop = 0;
let i = -1;
let titleCount = 0;
const loadImage = async(image) => {
const src = path.parse(image.src);
@@ -71,97 +73,68 @@ class ConvertPdf extends ConvertHtml {
}
}
const onTextNode = (text, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
if (!cutCounter && inText) {
let tOpen = (bold ? '<b>' : '');
/* let tOpen = (bold ? '<b>' : '');
tOpen += (italic ? '<i>' : '');
let tClose = (italic ? '</i>' : '');
tClose += (bold ? '</b>' : '');
lines[i].text += `${tOpen}${text}${tClose} `;*/
const onStartNode = (tag, tail, singleTag, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
if (tag == 'page')
putImage(100000);
lines[i].text += `${tOpen}${text}${tClose} `;
if (titleCount < 2 && text.trim() != '') {
title += text + (titleCount ? '' : ' - ');
titleCount++;
if (tag == 'textline') {
const attrs = sax.getAttrsSync(tail);
const line = {
text: '',
top: parseInt((attrs.vpos && attrs.vpos.value ? attrs.vpos.value : null), 10),
left: parseInt((attrs.hpos && attrs.hpos.value ? attrs.hpos.value : null), 10),
width: parseInt((attrs.width && attrs.width.value ? attrs.width.value : null), 10),
height: parseInt((attrs.height && attrs.height.value ? attrs.height.value : null), 10),
};
if (line.width != 0 || line.height != 0) {
if (isNaN(line.top) || isNaN(prevTop) || (Math.abs(prevTop - line.top) > 3)) {
putImage(line.top);
i++;
lines[i] = line;
}
prevTop = line.top;
}
}
};
const onStartNode = (tag, tail, singleTag, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
if (!cutCounter) {
if (inText) {
switch (tag) {
case 'i':
italic = true;
break;
case 'b':
bold = true;
break;
}
if (tag == 'string') {
const attrs = sax.getAttrsSync(tail);
if (attrs.content && attrs.content.value) {
lines[i].text += `${attrs.content.value} `;
}
}
if (tag == 'text' && !inText) {
let attrs = sax.getAttrsSync(tail);
const line = {
text: '',
top: parseInt((attrs.top && attrs.top.value ? attrs.top.value : null), 10),
left: parseInt((attrs.left && attrs.left.value ? attrs.left.value : null), 10),
width: parseInt((attrs.width && attrs.width.value ? attrs.width.value : null), 10),
height: parseInt((attrs.height && attrs.height.value ? attrs.height.value : null), 10),
};
if (line.width != 0 || line.height != 0) {
inText = true;
if (isNaN(line.top) || isNaN(prevTop) || (Math.abs(prevTop - line.top) > 3)) {
putImage(line.top);
i++;
lines[i] = line;
}
prevTop = line.top;
}
}
if (tag == 'image') {
const attrs = sax.getAttrsSync(tail);
const src = (attrs.src && attrs.src.value ? attrs.src.value : '');
if (tag == 'illustration') {
const attrs = sax.getAttrsSync(tail);
if (attrs.type && attrs.type.value == 'image') {
let src = (attrs.fileid && attrs.fileid.value ? attrs.fileid.value : '');
if (src) {
const image = {
isImage: true,
src,
data: '',
type: '',
top: parseInt((attrs.top && attrs.top.value ? attrs.top.value : null), 10) || 0,
top: parseInt((attrs.vpos && attrs.vpos.value ? attrs.vpos.value : null), 10) || 0,
};
loading.push(loadImage(image));
images.push(image);
images.sort((a, b) => a.top - b.top)
}
}
if (tag == 'page') {
putImage(100000);
}
}
};
/*
const onEndNode = (tag, tail, singleTag, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
if (inText) {
switch (tag) {
case 'i':
italic = false;
break;
case 'b':
bold = false;
break;
}
}
if (tag == 'text')
inText = false;
};
*/
let buf = this.decode(data).toString();
sax.parseSync(buf, {
onStartNode, onEndNode, onTextNode
onStartNode
});
putImage(100000);

1
server/core/sax.js
View File

@@ -287,6 +287,7 @@ function getAttrsSync(tail) {
let waitEq = false;
const pushResult = () => {
name = name.toLowerCase();
if (name != '') {
let ns = '';
if (name.indexOf(':') >= 0) {