📁 pre-commit

Signed-off-by: stirlingbot[bot] <stirlingbot[bot]@users.noreply.github.com>

app/common/src/main/java/stirling/software/common/util/PdfUtils.java

@@ -552,10 +552,10 @@ public class PdfUtils {
     public boolean containsTextInFile(PDDocument pdfDocument, String text, String pagesToCheck)
             throws IOException {
         PDFTextStripper textStripper = new PDFTextStripper();
-        String pdfText = "";
+        StringBuilder pdfText = new StringBuilder();
 
         if (pagesToCheck == null || "all".equals(pagesToCheck)) {
-            pdfText = textStripper.getText(pdfDocument);
+            pdfText = new StringBuilder(textStripper.getText(pdfDocument));
         } else {
             // remove whitespaces
             pagesToCheck = pagesToCheck.replaceAll("\\s+", "");
@@ -571,21 +571,21 @@ public class PdfUtils {
                     for (int i = startPage; i <= endPage; i++) {
                         textStripper.setStartPage(i);
                         textStripper.setEndPage(i);
-                        pdfText += textStripper.getText(pdfDocument);
+                        pdfText.append(textStripper.getText(pdfDocument));
                     }
                 } else {
                     // Handle individual page
                     int page = Integer.parseInt(splitPoint);
                     textStripper.setStartPage(page);
                     textStripper.setEndPage(page);
-                    pdfText += textStripper.getText(pdfDocument);
+                    pdfText.append(textStripper.getText(pdfDocument));
                 }
             }
         }
 
         pdfDocument.close();
 
-        return pdfText.contains(text);
+        return pdfText.toString().contains(text);
     }
 
     public boolean pageCount(PDDocument pdfDocument, int pageCount, String comparator)

app/core/src/main/java/stirling/software/SPDF/controller/api/misc/AutoRenameController.java

@@ -94,14 +94,14 @@ public class AutoRenameController {
                         // Merge lines with same font size
                         List<LineInfo> mergedLineInfos = new ArrayList<>();
                         for (int i = 0; i < lineInfos.size(); i++) {
-                            String mergedText = lineInfos.get(i).text;
+                            StringBuilder mergedText = new StringBuilder(lineInfos.get(i).text);
                             float fontSize = lineInfos.get(i).fontSize;
                             while (i + 1 < lineInfos.size()
                                     && lineInfos.get(i + 1).fontSize == fontSize) {
-                                mergedText += " " + lineInfos.get(i + 1).text;
+                                mergedText.append(" ").append(lineInfos.get(i + 1).text);
                                 i++;
                             }
-                            mergedLineInfos.add(new LineInfo(mergedText, fontSize));
+                            mergedLineInfos.add(new LineInfo(mergedText.toString(), fontSize));
                         }
 
                         // Sort lines by font size in descending order and get the first one

app/core/src/main/java/stirling/software/SPDF/controller/api/misc/ShowJavascript.java

@@ -38,7 +38,8 @@ public class ShowJavascript {
             description = "desc. Input:PDF Output:JS Type:SISO")
     public ResponseEntity<byte[]> extractHeader(@ModelAttribute PDFFile file) throws Exception {
         MultipartFile inputFile = file.getFileInput();
-        String script = "";
+        StringBuilder script = new StringBuilder();
+        boolean foundScript = false;
 
         try (PDDocument document = pdfDocumentFactory.load(inputFile)) {
 
@@ -55,28 +56,31 @@ public class ShowJavascript {
                         PDActionJavaScript jsAction = entry.getValue();
                         String jsCodeStr = jsAction.getAction();
 
-                        script +=
+                        if (jsCodeStr != null && !jsCodeStr.trim().isEmpty()) {
-                                "// File: "
+                            script.append("// File: ")
-                                        + Filenames.toSimpleFileName(
+                                    .append(
-                                                inputFile.getOriginalFilename())
+                                            Filenames.toSimpleFileName(
-                                        + ", Script: "
+                                                    inputFile.getOriginalFilename()))
-                                        + name
+                                    .append(", Script: ")
-                                        + "\n"
+                                    .append(name)
-                                        + jsCodeStr
+                                    .append("\n")
-                                        + "\n";
+                                    .append(jsCodeStr)
+                                    .append("\n");
+                            foundScript = true;
+                        }
                     }
                 }
             }
 
-            if (script.isEmpty()) {
+            if (!foundScript) {
                 script =
-                        "PDF '"
+                        new StringBuilder("PDF '")
-                                + Filenames.toSimpleFileName(inputFile.getOriginalFilename())
+                                .append(Filenames.toSimpleFileName(inputFile.getOriginalFilename()))
-                                + "' does not contain Javascript";
+                                .append("' does not contain Javascript");
             }
 
             return WebResponseUtils.bytesToWebResponse(
-                    script.getBytes(StandardCharsets.UTF_8),
+                    script.toString().getBytes(StandardCharsets.UTF_8),
                     Filenames.toSimpleFileName(inputFile.getOriginalFilename()) + ".js",
                     MediaType.TEXT_PLAIN);
         }