Module: CommitStats

Defined in:
lib/commit_stats.rb

Class Method Summary collapse

Class Method Details

.change_percent(numerator, denominator) ⇒ Object 



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# File 'lib/commit_stats.rb', line 214

def self.change_percent(numerator, denominator)
  denominator > 0 ?
    (numerator / denominator.to_f * 100) :
    0
end

.diff_context ⇒ Object 



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# File 'lib/commit_stats.rb', line 220

def self.diff_context()
  {
    insertions: [],
    deletions: [] }
end

.link_diffs!(files, file_diffs) ⇒ Object 



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# File 'lib/commit_stats.rb', line 63

def self.link_diffs!(files, file_diffs)
  file_diffs.reduce(diff_context()) do |acc, (file_name, file_diff)|
    file_diff.diffs.each do |diff|
      diff.insertions.each_with_index do |insertion, index|
        line_num = diff.insert_start + index - 1
        file = files[:b][file_diff.b_file_name][:b_file]
        line = file.is_a?(Hash) ? file[:lines][line_num] : file.lines[line_num]
        line[:insertion] = true
        acc[:insertions] << line
      end

      del_index = diff.insert_count > 0 ? 1 : 0
      diff.deletions.each_with_index do |deletion, index|
        line_num = diff.delete_start + index - 1
        file = files[:a][file_diff.a_file_name][:a_file]
        line = file.is_a?(Hash) ? file[:lines][line_num] : file.lines[line_num]
        line.merge!({
          deletion: true,
          a_pos: line_num + 1,
          b_pos: diff.insert_start + index - del_index
        })

        del_index += 1 if line[:change].blank?
        acc[:deletions] << line
      end
    end
    acc
  end
end

.link_mutations!(files, commit_mutations, type) ⇒ Object 



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# File 'lib/commit_stats.rb', line 4

def self.link_mutations!(files, commit_mutations, type)
  dmp = DiffMatchPatch.new()

  commit_mutations.each do |dest_file, file_mutations|
    file_mutations.each do |dest_line, mutation|
      src_file = mutation[:from]
      src_line = mutation[:line]

      b_file = files[:b][dest_file][:b_file]
      a_file = files[:a][src_file][:a_file]

      b_line = b_file.is_a?(Hash) ? b_file[:lines][dest_line] : b_file.lines[dest_line]
      a_line = a_file.is_a?(Hash) ? a_file[:lines][src_line] : a_file.lines[src_line]

      if type == :change
        diff = dmp.diff_main(a_line[:text], b_line[:text], false)

        b_line[:diff_text] = diff.reduce("") do |acc, section|
          if section.first == 0
            acc += section.last
          elsif section.first == 1
            acc += "<ins>#{section.last}</ins>"
          end
          acc
        end

        a_line[:diff_text] = diff.reduce("") do |acc, section|
          if section.first == 0
            acc += section.last
          elsif section.first == -1
            acc += "<del>#{section.last}</del>"
          end
          acc
        end
      end

      if Line.trailing?(b_line, a_line)
        change_type = :trailing
      elsif Line.beauty?(b_line, a_line)
        change_type = :beauty
      else
        change_type = :normal
      end

      b_line[type] = {
        link: "#/a/#{src_line + 1}/#{src_file}",
        type: change_type,
        change_text: a_line[:text]
      }

      a_line[type] = {
        link: "#/b/#{dest_line + 1}/#{dest_file}",
        type: change_type,
        change_text: b_line[:text]
      }
    end
  end
end

.stats(commit, line_diffs, files) ⇒ Object 



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# File 'lib/commit_stats.rb', line 93

def self.stats(commit, line_diffs, files)
  changes_total = commit
    .changes
    .reduce(0) { |acc, (filename, changeset)| acc += changeset.count } * 2

  movements_total = commit
    .movements
    .reduce(0) { |acc, (filename, moveset)| acc += moveset.count } * 2

  uncovered_deletions_total = 0
  uncovered_insertions_total = 0
  uncovered_changes_total = 0
  uncovered_error_changes_total = 0
  uncovered_buggy_changes_total = 0
  error_deletions_total = 0
  error_changes_total = 0
  buggy_insertions_total = 0
  buggy_deletions_total = 0
  buggy_changes_total = 0
  whitespace_insertions_total = 0
  whitespace_deletions_total = 0
  total_files_modified = files[:a].count
  total_lines_modified = commit.changes_total
  trailingspace_total = 0
  beautyspace_total = 0

  line_diffs[:insertions].each do |insertion|
    if insertion[:coverage] == 0
      uncovered_insertions_total += 1
      if insertion[:change]
        uncovered_changes_total += 1
        uncovered_error_changes_total += 1 if insertion[:errors].count > 0
        uncovered_buggy_changes_total += 1 if insertion[:bugs].count > 0
      end
    end
    if insertion[:change]
      buggy_changes_total += 1 if insertion[:bugs].count > 0
      error_changes_total += 1 if insertion[:errors].count > 0
      beautyspace_total += 2 if insertion[:change][:type] == :beauty # + deletion
      trailingspace_total += 2 if insertion[:change][:type] == :trailing # + deletion
    end
    whitespace_insertions_total += 1 if insertion[:text].strip().blank?
    buggy_insertions_total += 1 if insertion[:bugs].count > 0
  end

  line_diffs[:deletions].each do |deletion|
    if deletion[:coverage] == 0
      uncovered_deletions_total += 1
    end
    error_deletions_total += 1 if deletion[:errors].count > 0
    whitespace_deletions_total += 1 if deletion[:text].strip().blank?
    buggy_deletions_total += 1 if deletion[:bugs].count > 0
  end

  relevant_insertions_total = commit.insertions_total - whitespace_insertions_total
  covered_insertions_total = relevant_insertions_total - uncovered_insertions_total
  covered_insertions_percent = change_percent(covered_insertions_total, relevant_insertions_total)
  uncovered_insertions_percent = change_percent(uncovered_insertions_total, relevant_insertions_total)
  buggy_insertions_percent = change_percent(buggy_insertions_total, relevant_insertions_total)

  relevant_deletions_total = commit.insertions_total - whitespace_insertions_total
  covered_deletions_total = relevant_deletions_total - uncovered_deletions_total
  covered_deletions_percent = change_percent(covered_deletions_total, relevant_deletions_total)
  uncovered_deletions_percent = change_percent(uncovered_deletions_total, relevant_deletions_total)
  buggy_deletions_percent = change_percent(buggy_deletions_total, relevant_deletions_total)
  error_deletions_percent = change_percent(error_deletions_total, relevant_deletions_total)

  covered_changes_total = changes_total - uncovered_changes_total
  covered_changes_percent = change_percent(covered_changes_total, changes_total)
  uncovered_changes_percent = change_percent(uncovered_changes_total, changes_total)
  uncovered_error_changes_percent = change_percent(uncovered_error_changes_total, changes_total)
  uncovered_buggy_changes_percent = change_percent(uncovered_buggy_changes_total, changes_total)

  diffs_total = commit.deletions_total + commit.insertions_total
  movements_percent = change_percent(movements_total, diffs_total)

  whitespace_total = whitespace_insertions_total + whitespace_deletions_total
  whitespace_percent = change_percent(whitespace_total, diffs_total)
  trailingspace_percent = change_percent(trailingspace_total, diffs_total)
  beautyspace_percent = change_percent(beautyspace_total, diffs_total)

  {
    changes: commit.changes,
    movements: commit.movements,
    deletions_total: commit.deletions_total,
    insertions_total: commit.insertions_total,
    changes_total: changes_total,
    movements_total: movements_total,
    whitespace_total: whitespace_total,
    trailingspace_total: trailingspace_total,
    beautyspace_total: beautyspace_total,
    covered_insertions_percent: covered_insertions_percent,
    covered_deletions_percent: covered_deletions_percent,
    covered_changes_percent: covered_changes_percent,
    uncovered_insertions_percent: uncovered_insertions_percent,
    uncovered_deletions_percent: uncovered_deletions_percent,
    uncovered_changes_percent: uncovered_changes_percent,
    uncovered_error_changes_percent: uncovered_error_changes_percent,
    uncovered_buggy_changes_percent: uncovered_buggy_changes_percent,
    buggy_insertions_percent: buggy_insertions_percent,
    buggy_deletions_percent: buggy_deletions_percent,
    error_deletions_percent: error_deletions_percent,
    movements_percent: movements_percent,
    whitespace_percent: whitespace_percent,
    trailingspace_percent: trailingspace_percent,
    beautyspace_percent: beautyspace_percent,
    uncovered_deletions_total: uncovered_deletions_total,
    uncovered_insertions_total: uncovered_insertions_total,
    uncovered_changes_total: uncovered_changes_total,
    uncovered_error_changes_total: uncovered_error_changes_total,
    buggy_insertions_total: buggy_insertions_total,
    buggy_deletions_total: buggy_deletions_total,
    buggy_changes_total: buggy_changes_total,
    uncovered_buggy_changes_total: uncovered_buggy_changes_total,
    error_deletions_total: error_deletions_total,
    error_changes_total: error_changes_total,
    total_files_modified: total_files_modified,
    total_lines_modified: total_lines_modified
  }
end