Class: Ask::Tools::Read

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

Overview

Read file contents with line numbers, or list directory contents. Output is truncated to 2000 lines.

Constant Summary collapse

MAX_LINES = 
2000

Instance Method Summary collapse

Instance Method Details

#execute(path:, offset: nil, limit: nil) ⇒ Object 



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# File 'lib/ask/tools/shell/read.rb', line 20

def execute(path:, offset: nil, limit: nil)
  path = File.expand_path(path)

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

  if File.directory?(path)
    entries = Dir.children(path).sort
    entries.map! do |e|
      full = File.join(path, e)
      "#{e}#{File.directory?(full) ? '/' : ''}"
    end
    return Ask::Result.ok(data: entries.join("\n"), metadata: { type: "directory", count: entries.size })
  end

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

  if File.size(path) > 1_000_000
    return Ask::Result.error(
      message: "File too large (#{File.size(path)} bytes). Use offset/limit to read portions."
    )
  end

  lines = File.readlines(path, chomp: true)
  total = lines.size
  offset_val = offset.to_i.clamp(0, total)
  limit_val = limit || MAX_LINES

  selected = lines[offset_val, limit_val]
  truncated = selected.size < (total - offset_val)

  result = selected.each_with_index.map do |line, i|
    "#{offset_val + i + 1}: #{line}"
  end.join("\n")

  result << "\n... (#{total - offset_val - selected.size} more lines)" if truncated

  Ask::Result.ok(data: result, metadata: {
    total_lines: total,
    start_line: offset_val + 1,
    end_line: offset_val + selected.size,
    truncated: truncated
  })
end