Function normalizeFilenames

test/harness/replayingCapiProxy.ts:777–821

(
  conversations: NormalizedConversation[],
  workDir: string,
)

}

function normalizeFilenames(
  conversations: NormalizedConversation[],
  workDir: string,
): void {
  // Replace occurrences of the workDir path with workingDirPlaceholder to avoid diffs due to different test run locations
  // We do so case-insensitively and with both / and \ to cover different OSes
  // We also normalize any slashes in the rest of the path (e.g., C:\my\workdir\path\to\file.txt -> ${workdir}/path/to/file.txt)
  workDir = workDir.replace(/\\/g, "/").replace(/\/+$/, "");
  const escaped = workDir.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
  const workDirPattern = new RegExp(
    escaped.replace(/\//g, "[\\\\/]+") + "([\\\\/]+[^\\s\"'`,]*)?",
    "gi",
  );
  const workDirReplacer = (_: string, rest?: string) =>
    workingDirPlaceholder + (rest?.replace(/[\\/]+/g, "/") ?? "");

  // Match non-rooted Windows paths like abc\def\something.ext and flip slashes to /
  // We don't need to match absolute paths because the only legit ones should be inside workdir which
  // is handled above. Plus there's nothing we could do to normalize them since we don't know their base.
  const windowsFnPattern =
    /(?<![a-zA-Z0-9_\\])([a-zA-Z0-9_.-]+(?:\\[a-zA-Z0-9_.-]+)+)/g;
  const windowsFnReplacer = (_: string, path: string) =>
    path.replace(/\\/g, "/");

  for (const conv of conversations) {
    for (const msg of conv.messages) {
      if (msg.content) {
        msg.content = msg.content.replace(workDirPattern, workDirReplacer);
        msg.content = msg.content.replace(windowsFnPattern, windowsFnReplacer);
      }
      for (const tc of msg.tool_calls ?? []) {
        if (tc.function?.arguments) {
          tc.function.arguments = tc.function.arguments.replace(
            workDirPattern,
            workDirReplacer,
          );
          tc.function.arguments = tc.function.arguments.replace(
            windowsFnPattern,
            windowsFnReplacer,
          );
        }
      }
    }
  }
}

function normalizeToolCalls(
  conversations: NormalizedConversation[],