Class: RobotLab::To::Tools::Edit

Inherits:
FileTool
  • Object
show all
Defined in:
lib/robot_lab/to/tools/edit.rb

Overview

Exact-string replacement in an existing file. old_text must match the file's current contents exactly (whitespace included) and be unique unless replace_all is set. The ReadBeforeEdit guard requires the file to have been Read this session first, so old_text reflects real contents.

Instance Method Summary collapse

Methods inherited from FileTool

#name, name_segment, short_name

Instance Method Details

#apply(content, old_text, new_text, replace_all) ⇒ String

Pure replacement logic (testable in isolation). Returns the new content string, or an "Error: ..." string on a precondition failure.

Returns:

  • (String) 


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# File 'lib/robot_lab/to/tools/edit.rb', line 40

def apply(content, old_text, new_text, replace_all)
  count = content.scan(old_text).size
  return "Error: old_text not found in file" if count.zero?
  if count > 1 && !replace_all
    return "Error: old_text is not unique (#{count} matches); add context or set replace_all"
  end

  replace_all ? content.gsub(old_text, new_text) : content.sub(old_text, new_text)
end

#execute(path:, old_text:, new_text:, replace_all: false) ⇒ Object 



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# File 'lib/robot_lab/to/tools/edit.rb', line 22

def execute(path:, old_text:, new_text:, replace_all: false, **)
  resolved = File.expand_path(path, Dir.pwd)
  return "Error: file not found: #{path}" unless File.file?(resolved)

  original = File.read(resolved)
  result = apply(original, old_text.to_s, new_text.to_s, replace_all)
  return result if result.is_a?(String) && result.start_with?("Error:")

  File.write(resolved, result)
  "Edited #{path}"
rescue SystemCallError => e
  "Error editing #{path}: #{e.message}"
end