Class: Dirfy::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/dirfy/parser.rb

Overview

Parses ASCII/Unicode tree diagrams into flat path lists.

Instance Method Summary collapse

Constructor Details

#initialize(indent: 4) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/dirfy/parser.rb', line 7

def initialize(indent: 4)
  @indent = indent
end

Instance Method Details

#parse(lines) ⇒ Object

lines - Array<String> returns Array<String> of relative paths, dirs ending with ‘/’



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# File 'lib/dirfy/parser.rb', line 13

def parse(lines)
  stack = []
  items = []
  depths = []
  names = []

  lines.each do |raw|
    line = raw.rstrip
    next if line.strip.empty? || line.strip.start_with?("#")

    if line.match?(/[└├]/)
      # replace tree chars with spaces to count indent
      indent_str = line.gsub(/[│├└─]/, " ")
      lead_spaces = indent_str[/\A */].size
      depth = lead_spaces / @indent
      name  = line.split("── ", 2).last
    else
      depth = 0
      name  = line.strip
    end

    stack[depth] = name
    stack = stack[0..depth]
    # build full path (no trailing slash yet)
    path = stack.map { |c| c.chomp("/") }.join("/")
    depths << depth
    names << name
    items << path
  end

  # Second pass: infer directories by depth
  items.each_with_index.map do |path, i|
    is_dir = directory?(names[i], i, depths)
    is_dir ? (path.end_with?("/") ? path : "#{path}/") : path
  end
end