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This commit is contained in:
Anthony Stirling
2023-08-01 00:03:13 +01:00
parent 0da9c62ef8
commit 77411e94a4
18 changed files with 413 additions and 78 deletions
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81
src/main/java/stirling/software/SPDF/controller/api/converters/ConvertHtmlToPDF.java
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@@ -19,6 +19,7 @@ import org.springframework.web.multipart.MultipartFile;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.tags.Tag;
import stirling.software.SPDF.utils.FileToPdf;
import stirling.software.SPDF.utils.GeneralUtils;
import stirling.software.SPDF.utils.ProcessExecutor;
import stirling.software.SPDF.utils.ProcessExecutor.ProcessExecutorResult;
@@ -44,87 +45,17 @@ public class ConvertHtmlToPDF {
String originalFilename = fileInput.getOriginalFilename();
if (originalFilename == null || (!originalFilename.endsWith(".html") && !originalFilename.endsWith(".zip"))) {
throw new IllegalArgumentException("File must be either .html or .zip format.");
}
Path tempOutputFile = Files.createTempFile("output_", ".pdf");
Path tempInputFile = null;
byte[] pdfBytes;
try {
if (originalFilename.endsWith(".html")) {
tempInputFile = Files.createTempFile("input_", ".html");
Files.write(tempInputFile, fileInput.getBytes());
} else {
tempInputFile = unzipAndGetMainHtml(fileInput);
}
List<String> command = new ArrayList<>();
command.add("weasyprint");
command.add(tempInputFile.toString());
command.add(tempOutputFile.toString());
ProcessExecutorResult returnCode;
if (originalFilename.endsWith(".zip")) {
returnCode = ProcessExecutor.getInstance(ProcessExecutor.Processes.WEASYPRINT)
.runCommandWithOutputHandling(command, tempInputFile.getParent().toFile());
} else {
returnCode = ProcessExecutor.getInstance(ProcessExecutor.Processes.WEASYPRINT)
.runCommandWithOutputHandling(command);
}
pdfBytes = Files.readAllBytes(tempOutputFile);
} finally {
// Clean up temporary files
Files.delete(tempOutputFile);
Files.delete(tempInputFile);
if (originalFilename.endsWith(".zip")) {
GeneralUtils.deleteDirectory(tempInputFile.getParent());
}
}
}byte[] pdfBytes = FileToPdf.convertHtmlToPdf( fileInput.getBytes(), originalFilename);
String outputFilename = originalFilename.replaceFirst("[.][^.]+$", "") + ".pdf"; // Remove file extension and append .pdf
return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
}
private Path unzipAndGetMainHtml(MultipartFile zipFile) throws IOException {
Path tempDirectory = Files.createTempDirectory("unzipped_");
try (ZipInputStream zipIn = new ZipInputStream(new ByteArrayInputStream(zipFile.getBytes()))) {
ZipEntry entry = zipIn.getNextEntry();
while (entry != null) {
Path filePath = tempDirectory.resolve(entry.getName());
if (entry.isDirectory()) {
Files.createDirectories(filePath); // Explicitly create the directory structure
} else {
Files.createDirectories(filePath.getParent()); // Create parent directories if they don't exist
Files.copy(zipIn, filePath);
}
zipIn.closeEntry();
entry = zipIn.getNextEntry();
}
}
//search for the main HTML file.
try (Stream<Path> walk = Files.walk(tempDirectory)) {
List<Path> htmlFiles = walk.filter(file -> file.toString().endsWith(".html"))
.collect(Collectors.toList());
if (htmlFiles.isEmpty()) {
throw new IOException("No HTML files found in the unzipped directory.");
}
// Prioritize 'index.html' if it exists, otherwise use the first .html file
for (Path htmlFile : htmlFiles) {
if (htmlFile.getFileName().toString().equals("index.html")) {
return htmlFile;
}
}
return htmlFiles.get(0);
}
}
}

52
src/main/java/stirling/software/SPDF/controller/api/converters/ConvertMarkdownToPdf.java Normal file
View File

@@ -0,0 +1,52 @@
package stirling.software.SPDF.controller.api.converters;
import java.io.IOException;
import org.commonmark.node.Node;
import org.commonmark.parser.Parser;
import org.commonmark.renderer.html.HtmlRenderer;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestPart;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.tags.Tag;
import stirling.software.SPDF.utils.FileToPdf;
import stirling.software.SPDF.utils.WebResponseUtils;
@RestController
@Tag(name = "Convert", description = "Convert APIs")
public class ConvertMarkdownToPdf {
@PostMapping(consumes = "multipart/form-data", value = "/markdown-to-pdf")
@Operation(
summary = "Convert a Markdown file to PDF",
description = "This endpoint takes a Markdown file input, converts it to HTML, and then to PDF format."
)
public ResponseEntity<byte[]> markdownToPdf(
@RequestPart(required = true, value = "fileInput") MultipartFile fileInput)
throws IOException, InterruptedException {
if (fileInput == null) {
throw new IllegalArgumentException("Please provide a Markdown file for conversion.");
}
String originalFilename = fileInput.getOriginalFilename();
if (originalFilename == null || !originalFilename.endsWith(".md")) {
throw new IllegalArgumentException("File must be in .md format.");
}
// Convert Markdown to HTML using CommonMark
Parser parser = Parser.builder().build();
Node document = parser.parse(new String(fileInput.getBytes()));
HtmlRenderer renderer = HtmlRenderer.builder().build();
String htmlContent = renderer.render(document);
byte[] pdfBytes = FileToPdf.convertHtmlToPdf(htmlContent.getBytes(), "converted.html");
String outputFilename = originalFilename.replaceFirst("[.][^.]+$", "") + ".pdf"; // Remove file extension and append .pdf
return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
}
}