Function processDiff

src/codeScan/git/diffProcessor.ts:452–511

(
  repoPath: string,
  base: string,
  compare: string = 'HEAD',
)

}

export async function processDiff(
  repoPath: string,
  base: string,
  compare: string = 'HEAD',
): Promise<FileRecord[]> {
  try {
    // Step 1: Discover changed files
    let files = await discoverChangedFiles(repoPath, base, compare);

    if (files.length === 0) {
      return files;
    }

    // Step 2: Filter denylist (early exit)
    files = filterDenylist(files);

    // Count remaining files
    const remainingAfterDenylist = files.filter((f) => !f.skipReason).length;
    if (remainingAfterDenylist === 0) {
      return files;
    }

    // Step 3: Collect blob sizes and filter large files
    const sizeMap = await collectBlobSizes(repoPath, files);
    files = attachBlobSizesAndFilter(files, sizeMap);

    // Count remaining files
    const remainingAfterSizeFilter = files.filter((f) => !f.skipReason).length;
    if (remainingAfterSizeFilter === 0) {
      return files;
    }

    // Step 4: Determine text/binary status
    files = await determineTextStatus(repoPath, files);

    // Count remaining files
    const remainingAfterBinaryFilter = files.filter((f) => !f.skipReason).length;
    if (remainingAfterBinaryFilter === 0) {
      return files;
    }

    // Step 5: Generate per-file patches
    files = await generatePatches(repoPath, base, compare, files);

    // Final count
    const finalIncludedFiles = files.filter((f) => !f.skipReason && f.patch).length;
    if (finalIncludedFiles === 0) {
      return files;
    }

    return files;
  } catch (error) {
    if (error instanceof DiffProcessorError) {
      throw error;
    }
    throw new DiffProcessorError(
      `Failed to process diff: ${error instanceof Error ? error.message : String(error)}`,
    );