Class: Fcom::Parser

Inherits:
Object
  • Object
show all
Includes:
OptionsHelpers
Defined in:
lib/fcom/parser.rb

Overview

This class parses (and then reprints some of) STDIN according to the options passed to fcom.

Constant Summary collapse

COMMIT_HEADER_SEPARATOR = 
'=============================================='

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/fcom/parser.rb', line 11

def initialize(options)
  @options = options
  @matching_commits = 0
end

Instance Method Details

#parse ⇒ Object 



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# File 'lib/fcom/parser.rb', line 16

def parse
  expression_to_match =
    if fixed_strings?
      Regexp.escape(search_string).gsub('\\ ', ' ')
    else
      search_string
    end
  regex =
    Regexp.new(
      "\\A(?:[+-]\\s?.*(?:#{expression_to_match}).*|Omitted long (?:matching )?line)",
      ignore_case? ? Regexp::IGNORECASE : nil,
    )

  previous_commit = nil
  a_commit_has_matched = false
  filename = nil
  $stdin.each do |line|
    line.chomp!
    if (match = line.match(/^commit (.*)/)&.[](1))
      if commit_limit_reached?
        break
      end

      previous_commit = match
    elsif line.match?(/^diff /)
      old_filename = line.match(%r{ a/(\S+)})&.[](1) || '[weird filename]'
      new_filename = line.match(%r{ b/(\S+)})&.[](1) || '[weird filename]'
      filename =
        case
        when old_filename == new_filename then old_filename
        else "#{old_filename} --> #{new_filename}"
        end
    elsif line.match?(%r{\A(?:---|\+\+\+) })
      next
    elsif line.match?(regex) && (filename.blank? || path_match?(filename))
      if previous_commit
        title, sha, author, date = previous_commit.split('|')
        short_sha = sha[0, 8]
        sha_with_url = "#{short_sha} ( https://github.com/#{repo}/commit/#{short_sha} )"

        if a_commit_has_matched # print commit separator, if needed
          puts("\n\n")
        end
        puts([title, sha_with_url, author, date])
        puts(COMMIT_HEADER_SEPARATOR)

        previous_commit = nil
        a_commit_has_matched = true
        @matching_commits += 1
      end

      if filename
        puts(filename)
        filename = nil
      end

      if line.start_with?('+')
        puts(line.green)
      elsif line.start_with?('-')
        puts(line.red)
      else
        puts(line)
      end
    end
  end
end