Function getCorrectedFileContent

packages/core/src/tools/write-file.ts:73–130

(
  config: Config,
  filePath: string,
  proposedContent: string,
  abortSignal: AbortSignal,
)

}

export async function getCorrectedFileContent(
  config: Config,
  filePath: string,
  proposedContent: string,
  abortSignal: AbortSignal,
): Promise<GetCorrectedFileContentResult> {
  let originalContent = '';
  let fileExists = false;
  let correctedContent = proposedContent;

  try {
    originalContent = fs.readFileSync(filePath, 'utf8');
    fileExists = true; // File exists and was read
  } catch (err) {
    if (isNodeError(err) && err.code === 'ENOENT') {
      fileExists = false;
      originalContent = '';
    } else {
      // File exists but could not be read (permissions, etc.)
      fileExists = true; // Mark as existing but problematic
      originalContent = ''; // Can't use its content
      const error = {
        message: getErrorMessage(err),
        code: isNodeError(err) ? err.code : undefined,
      };
      // Return early as we can't proceed with content correction meaningfully
      return { originalContent, correctedContent, fileExists, error };
    }
  }

  // If readError is set, we have returned.
  // So, file was either read successfully (fileExists=true, originalContent set)
  // or it was ENOENT (fileExists=false, originalContent='').

  if (fileExists) {
    // This implies originalContent is available
    const { params: correctedParams } = await ensureCorrectEdit(
      filePath,
      originalContent,
      {
        old_string: originalContent, // Treat entire current content as old_string
        new_string: proposedContent,
        file_path: filePath,
      },
      config.getAnusClient(),
      abortSignal,
    );
    correctedContent = correctedParams.new_string;
  } else {
    // This implies new file (ENOENT)
    correctedContent = await ensureCorrectFileContent(
      proposedContent,
      config.getAnusClient(),
      abortSignal,
    );
  }
  return { originalContent, correctedContent, fileExists };
}