private static void copyAndAnnotateJarEntry()

in jar-infer/jar-infer-lib/src/main/java/com/uber/nullaway/jarinfer/BytecodeAnnotator.java [225:272]
41 lines of code
11 McCabe index (conditional complexity)

  private static void copyAndAnnotateJarEntry(
      JarEntry jarEntry,
      InputStream is,
      JarOutputStream jarOS,
      MethodParamAnnotations nonnullParams,
      MethodReturnAnnotations nullableReturns,
      String nullableDesc,
      String nonnullDesc,
      boolean stripJarSignatures)
      throws IOException {
    String entryName = jarEntry.getName();
    if (entryName.endsWith(".class")) {
      jarOS.putNextEntry(createZipEntry(jarEntry.getName()));
      annotateBytecode(is, jarOS, nonnullParams, nullableReturns, nullableDesc, nonnullDesc);
    } else if (entryName.equals("META-INF/MANIFEST.MF")) {
      // Read full file
      StringBuilder stringBuilder = new StringBuilder();
      BufferedReader br = new BufferedReader(new InputStreamReader(is, UTF_8));
      String currentLine;
      while ((currentLine = br.readLine()) != null) {
        stringBuilder.append(currentLine + "\n");
      }
      String manifestText = stringBuilder.toString();
      // Check for evidence of jar signing, note that lines can be split if too long so regex
      // matching line by line will have false negatives.
      // NOTE: this code only handles the case where the message digest algorithm used when signing
      // was SHA-256.  Eventually we may need a more robust solution for other digest algorithms.
      // E.g., on JDK 21, the default message digest algorithm is SHA-384, and this code does not
      // work for that algorithm (the DIGEST_ENTRY_PATTERN regex is hardcoded for SHA-256)
      String manifestMinusDigests = manifestText.replaceAll(DIGEST_ENTRY_PATTERN, "");
      if (!manifestText.equals(manifestMinusDigests) && !stripJarSignatures) {
        throw new SignedJarException(SIGNED_JAR_ERROR_MESSAGE);
      }
      jarOS.putNextEntry(createZipEntry(jarEntry.getName()));
      jarOS.write(manifestMinusDigests.getBytes(UTF_8));
    } else if (entryName.startsWith("META-INF/")
        && (entryName.endsWith(".DSA")
            || entryName.endsWith(".RSA")
            || entryName.endsWith(".SF"))) {
      if (!stripJarSignatures) {
        throw new SignedJarException(SIGNED_JAR_ERROR_MESSAGE);
      } // the case where stripJarSignatures==true is handled by default by skipping these files
    } else {
      jarOS.putNextEntry(createZipEntry(jarEntry.getName()));
      jarOS.write(IOUtils.toByteArray(is));
    }
    jarOS.closeEntry();
  }