Class: Nanobot::Agent::Tools::EditFile

Inherits:
RubyLLM::Tool
  • Object
show all
Includes:
WorkspaceSandbox
Defined in:
lib/nanobot/agent/tools/filesystem.rb

Overview

Tool for editing files by replacing text

Constant Summary

Constants included from WorkspaceSandbox

WorkspaceSandbox::PROTECTED_FILENAMES

Instance Method Summary collapse

Constructor Details

#initialize(allowed_dir: nil) ⇒ EditFile

Returns a new instance of EditFile.

Parameters:

  • allowed_dir (String, nil) (defaults to: nil) —

    workspace directory to restrict access to



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# File 'lib/nanobot/agent/tools/filesystem.rb', line 153

def initialize(allowed_dir: nil)
  super()
  @allowed_dir = allowed_dir ? Pathname.new(allowed_dir).expand_path : nil
end

Instance Method Details

#execute(path:, old_text:, new_text:) ⇒ String

Replace a unique occurrence of old_text with new_text in a file.

Parameters:

  • path (String) —

    path to the file to edit

  • old_text (String) —

    text to search for and replace

  • new_text (String) —

    replacement text

Returns:

  • (String) —

    success message or error message



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# File 'lib/nanobot/agent/tools/filesystem.rb', line 163

def execute(path:, old_text:, new_text:)
  file_path = Pathname.new(path).expand_path

  # Security check
  if @allowed_dir && !within_allowed_dir?(file_path)
    return "Error: Access denied. Path is outside allowed directory: #{@allowed_dir}"
  end

  if protected_path?(file_path)
    return "Error: Access denied. Bootstrap file #{file_path.basename} is read-only."
  end

  return "Error: File not found: #{path}" unless file_path.exist?
  return "Error: Path is not a file: #{path}" unless file_path.file?

  begin
    content = file_path.read

    return "Error: Text not found in file: #{old_text[0..50]}..." unless content.include?(old_text)

    # Check if old_text appears multiple times
    occurrences = content.scan(old_text).length
    return "Error: Text appears #{occurrences} times in file. Please be more specific." if occurrences > 1

    new_content = content.sub(old_text, new_text)
    file_path.write(new_content)

    "Successfully edited #{path}"
  rescue StandardError => e
    "Error editing file: #{e.message}"
  end
end