Class: Ask::Tools::Edit

Inherits:
Ask::Tool
  • Object
show all
Defined in:
lib/ask/tools/shell/edit.rb

Overview

Edit a file by replacing exact text. Uses exact string matching — provide enough surrounding context for uniqueness.

Constant Summary collapse

MAX_FILE_SIZE = 
1_000_000

Instance Method Summary collapse

Instance Method Details

#execute(path:, old_string:, new_string:, replace_all: false) ⇒ Object 



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# File 'lib/ask/tools/shell/edit.rb', line 18

def execute(path:, old_string:, new_string:, replace_all: false)
  path = File.expand_path(path)

  unless File.exist?(path)
    return Ask::Result.error(message: "File does not exist: #{path}")
  end

  unless File.file?(path)
    return Ask::Result.error(message: "Not a file: #{path}")
  end

  if File.size(path) > MAX_FILE_SIZE
    return Ask::Result.error(
      message: "File too large (#{File.size(path)} bytes). Maximum is #{MAX_FILE_SIZE} bytes."
    )
  end

  content = File.read(path)

  if replace_all
    count = content.scan(old_string).size
    return Ask::Result.error(message: "String not found") if count == 0
    content = content.gsub(old_string, new_string)
  else
    index = content.index(old_string)
    return Ask::Result.error(message: "String not found") unless index
    count = 1
    content = content.sub(old_string, new_string)
  end

  File.write(path, content)
  Ask::Result.ok(data: { path: path, replacements: count },
                  metadata: { path: path, replacements: count })
end