auto split init
This commit is contained in:
Anthony Stirling
systo Anthony Stirling
parent
ddf5915c6a
commit
6e32c7fe85
7 changed files with 179 additions and 1 deletions
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@ -62,6 +62,8 @@ dependencies {
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implementation 'org.springframework.boot:spring-boot-starter-actuator'
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implementation 'io.micrometer:micrometer-core'
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implementation group: 'com.google.zxing', name: 'core', version: '3.5.1'
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developmentOnly("org.springframework.boot:spring-boot-devtools")
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}
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@ -0,0 +1,132 @@
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package stirling.software.SPDF.controller.api.other;
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import java.awt.image.BufferedImage;
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import java.awt.image.DataBufferByte;
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import java.awt.image.DataBufferInt;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipOutputStream;
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import org.apache.pdfbox.pdmodel.PDDocument;
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import org.apache.pdfbox.rendering.PDFRenderer;
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import org.springframework.http.MediaType;
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import org.springframework.http.ResponseEntity;
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import org.springframework.web.bind.annotation.PostMapping;
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import org.springframework.web.bind.annotation.RequestParam;
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import org.springframework.web.bind.annotation.RestController;
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import org.springframework.web.multipart.MultipartFile;
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import com.google.zxing.BinaryBitmap;
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import com.google.zxing.LuminanceSource;
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import com.google.zxing.MultiFormatReader;
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import com.google.zxing.NotFoundException;
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import com.google.zxing.PlanarYUVLuminanceSource;
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import com.google.zxing.Result;
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import com.google.zxing.common.HybridBinarizer;
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import stirling.software.SPDF.utils.WebResponseUtils;
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@RestController
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public class AutoSplitPdfController {
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private static final String QR_CONTENT = "https://github.com/Frooodle/Stirling-PDF";
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@PostMapping(value = "/auto-split-pdf", consumes = "multipart/form-data")
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public ResponseEntity<byte[]> autoSplitPdf(@RequestParam("fileInput") MultipartFile file) throws IOException {
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InputStream inputStream = file.getInputStream();
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PDDocument document = PDDocument.load(inputStream);
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PDFRenderer pdfRenderer = new PDFRenderer(document);
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List<PDDocument> splitDocuments = new ArrayList<>();
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List<ByteArrayOutputStream> splitDocumentsBoas = new ArrayList<>(); // create this list to store ByteArrayOutputStreams for zipping
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for (int page = 0; page < document.getNumberOfPages(); ++page) {
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BufferedImage bim = pdfRenderer.renderImageWithDPI(page, 150);
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String result = decodeQRCode(bim);
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if(QR_CONTENT.equals(result) && page != 0) {
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splitDocuments.add(new PDDocument());
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}
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if (!splitDocuments.isEmpty() && !QR_CONTENT.equals(result)) {
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splitDocuments.get(splitDocuments.size() - 1).addPage(document.getPage(page));
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} else if (page == 0) {
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PDDocument firstDocument = new PDDocument();
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firstDocument.addPage(document.getPage(page));
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splitDocuments.add(firstDocument);
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}
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}
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// After all pages are added to splitDocuments, convert each to ByteArrayOutputStream and add to splitDocumentsBoas
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for (PDDocument splitDocument : splitDocuments) {
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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splitDocument.save(baos);
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splitDocumentsBoas.add(baos);
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splitDocument.close();
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}
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document.close();
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// After this line, you can find your zip logic integrated
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Path zipFile = Files.createTempFile("split_documents", ".zip");
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String filename = file.getOriginalFilename().replaceFirst("[.][^.]+$", "");
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byte[] data;
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try (ZipOutputStream zipOut = new ZipOutputStream(Files.newOutputStream(zipFile))) {
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// loop through the split documents and write them to the zip file
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for (int i = 0; i < splitDocumentsBoas.size(); i++) {
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String fileName = filename + "_" + (i + 1) + ".pdf"; // You should replace "originalFileName" with the real file name
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ByteArrayOutputStream baos = splitDocumentsBoas.get(i);
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byte[] pdf = baos.toByteArray();
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// Add PDF file to the zip
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ZipEntry pdfEntry = new ZipEntry(fileName);
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zipOut.putNextEntry(pdfEntry);
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zipOut.write(pdf);
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zipOut.closeEntry();
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}
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} catch (Exception e) {
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e.printStackTrace();
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} finally {
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data = Files.readAllBytes(zipFile);
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Files.delete(zipFile);
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}
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// return the Resource in the response
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return WebResponseUtils.bytesToWebResponse(data, filename + ".zip", MediaType.APPLICATION_OCTET_STREAM);
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}
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private static String decodeQRCode(BufferedImage bufferedImage) {
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LuminanceSource source;
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if (bufferedImage.getRaster().getDataBuffer() instanceof DataBufferByte) {
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byte[] pixels = ((DataBufferByte) bufferedImage.getRaster().getDataBuffer()).getData();
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source = new PlanarYUVLuminanceSource(pixels, bufferedImage.getWidth(), bufferedImage.getHeight(), 0, 0, bufferedImage.getWidth(), bufferedImage.getHeight(), false);
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} else if (bufferedImage.getRaster().getDataBuffer() instanceof DataBufferInt) {
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int[] pixels = ((DataBufferInt) bufferedImage.getRaster().getDataBuffer()).getData();
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byte[] newPixels = new byte[pixels.length];
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for (int i = 0; i < pixels.length; i++) {
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newPixels[i] = (byte) (pixels[i] & 0xff);
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}
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source = new PlanarYUVLuminanceSource(newPixels, bufferedImage.getWidth(), bufferedImage.getHeight(), 0, 0, bufferedImage.getWidth(), bufferedImage.getHeight(), false);
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} else {
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throw new IllegalArgumentException("BufferedImage must have 8-bit gray scale, 24-bit RGB, 32-bit ARGB (packed int), byte gray, or 3-byte/4-byte RGB image data");
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}
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BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
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try {
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Result result = new MultiFormatReader().decode(bitmap);
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return result.getText();
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} catch (NotFoundException e) {
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return null; // there is no QR code in the image
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}
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}
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}
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@ -143,4 +143,12 @@ public class GeneralWebController {
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model.addAttribute("currentPage", "crop");
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return "crop";
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}
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@GetMapping("/auto-split-pdf")
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@Hidden
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public String autoSPlitPDFForm(Model model) {
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model.addAttribute("currentPage", "auto-split-pdf");
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return "auto-split-pdf";
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}
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}
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@ -149,6 +149,9 @@ home.adjust-contrast.desc=Adjust Contrast, Saturation and Brightness of a PDF
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home.crop.title=Crop PDF
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home.crop.desc=Crop a PDF to reduce its size (maintains text!)
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home.autoSplitPDF.title=Auto Split Pages
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home.autoSplitPDF.desc=Auto Split Scanned PDF with physical scanned page splitter QR Code
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error.pdfPassword=The PDF Document is passworded and either the password was not provided or was incorrect
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downloadPdf=Download PDF
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31
src/main/resources/templates/auto-split-pdf.html
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31
src/main/resources/templates/auto-split-pdf.html
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<!DOCTYPE html>
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<html th:lang="${#locale.toString()}" th:lang-direction="#{language.direction}" xmlns:th="http://www.thymeleaf.org">
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<th:block th:insert="~{fragments/common :: head(title=#{autoSplitPDF.title})}"></th:block>
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<body>
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<th:block th:insert="~{fragments/common :: game}"></th:block>
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<div id="page-container">
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<div id="content-wrap">
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<div th:insert="~{fragments/navbar.html :: navbar}"></div>
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<br> <br>
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<div class="container">
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<div class="row justify-content-center">
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<div class="col-md-6">
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<h2 th:text="#{autoSplitPDF.header}"></h2>
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<form method="post" enctype="multipart/form-data" th:action="@{auto-split-pdf}">
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<div th:replace="~{fragments/common :: fileSelector(name='fileInput', multiple=false)}"></div>
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<button type="submit" id="submitBtn" class="btn btn-primary" th:text="#{autoSplitPDF.submit}"></button>
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</form>
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</div>
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</div>
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</div>
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</div>
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<div th:insert="~{fragments/footer.html :: footer}"></div>
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</div>
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</body>
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</html>
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@ -54,6 +54,8 @@
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<div th:replace="~{fragments/navbarEntry :: navbarEntry ( 'remove-pages', 'images/file-earmark-x.svg', 'home.removePages.title', 'home.removePages.desc')}"></div>
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<div th:replace="~{fragments/navbarEntry :: navbarEntry ( 'multi-page-layout', 'images/page-layout.svg', 'home.pageLayout.title', 'home.pageLayout.desc')}"></div>
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<div th:replace="~{fragments/navbarEntry :: navbarEntry ( 'scale-pages', 'images/scale-pages.svg', 'home.scalePages.title', 'home.scalePages.desc')}"></div>
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<div th:replace="~{fragments/navbarEntry :: navbarEntry ( 'auto-split-pdf', 'images/layout-split.svg', 'home.autoSplitPDF.title', 'home.autoSplitPDF.desc')}"></div>
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</div>
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</li>
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@ -77,7 +77,7 @@
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<div th:replace="~{fragments/card :: card(id='auto-rename', cardTitle=#{home.auto-rename.title}, cardText=#{home.auto-rename.desc}, cardLink='auto-rename', svgPath='images/fonts.svg')}"></div>
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<div th:replace="~{fragments/card :: card(id='adjust-contrast', cardTitle=#{home.adjust-contrast.title}, cardText=#{home.adjust-contrast.desc}, cardLink='adjust-contrast', svgPath='images/adjust-contrast.svg')}"></div>
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<div th:replace="~{fragments/card :: card(id='crop', cardTitle=#{home.crop.title}, cardText=#{home.crop.desc}, cardLink='crop', svgPath='images/crop.svg')}"></div>
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<div th:replace="~{fragments/card :: card(id='auto-split-pdf', cardTitle=#{home.autoSplitPDF.title}, cardText=#{home.autoSplitPDF.desc}, cardLink='auto-split-pdf', svgPath='images/layout-split.svg')}"></div>
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</div>
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