Function calculateDiffStats

extensions/cli/src/util/metadata.ts:27–60

(diffContent: string)

 * @returns Object with additions and deletions counts
 */
export function calculateDiffStats(diffContent: string): DiffStats {
  if (!diffContent || diffContent.trim() === "") {
    return { additions: 0, deletions: 0 };
  }

  const lines = diffContent.split("\n");
  let additions = 0;
  let deletions = 0;

  for (const line of lines) {
    // Skip diff metadata lines
    // File headers contain a space: "--- a/file" or "+++ b/file"
    // But code changes with ++ or -- at start don't: "+++counter;" or "---counter;"
    if (
      (line.startsWith("+++") && (line.length === 3 || line[3] === " ")) ||
      (line.startsWith("---") && (line.length === 3 || line[3] === " ")) ||
      line.startsWith("@@") ||
      line.startsWith("diff ") ||
      line.startsWith("index ") ||
      line.startsWith("Binary files")
    ) {
      continue;
    }

    // Count actual code changes
    if (line.startsWith("+")) {
      additions++;
    } else if (line.startsWith("-")) {
      deletions++;
    }
  }

  return { additions, deletions };
}

/**
 * Extract the last assistant message from conversation history