gitlab-org--gitlab-foss/lib/gitlab/diff_parser.rb
2014-08-14 15:48:14 +04:00

83 lines
1.9 KiB
Ruby

module Gitlab
class DiffParser
include Enumerable
attr_reader :lines, :new_path
def initialize(lines, new_path = '')
@lines = lines
@new_path = new_path
end
def each
line_old = 1
line_new = 1
type = nil
lines_arr = ::Gitlab::InlineDiff.processing lines
lines_arr.each do |line|
raw_line = line.dup
next if filename?(line)
full_line = html_escape(line.gsub(/\n/, ''))
full_line = ::Gitlab::InlineDiff.replace_markers full_line
if line.match(/^@@ -/)
type = "match"
line_old = line.match(/\-[0-9]*/)[0].to_i.abs rescue 0
line_new = line.match(/\+[0-9]*/)[0].to_i.abs rescue 0
next if line_old == 1 && line_new == 1 #top of file
yield(full_line, type, nil, line_new, line_old)
next
else
type = identification_type(line)
line_code = generate_line_code(new_path, line_new, line_old)
yield(full_line, type, line_code, line_new, line_old, raw_line)
end
if line[0] == "+"
line_new += 1
elsif line[0] == "-"
line_old += 1
else
line_new += 1
line_old += 1
end
end
end
def empty?
@lines.empty?
end
private
def filename?(line)
line.start_with?('--- /dev/null', '+++ /dev/null', '--- a', '+++ b',
'--- /tmp/diffy', '+++ /tmp/diffy')
end
def identification_type(line)
if line[0] == "+"
"new"
elsif line[0] == "-"
"old"
else
nil
end
end
def generate_line_code(path, line_new, line_old)
"#{Digest::SHA1.hexdigest(path)}_#{line_old}_#{line_new}"
end
def html_escape str
replacements = { '&' => '&amp;', '>' => '&gt;', '<' => '&lt;', '"' => '&quot;', "'" => '&#39;' }
str.gsub(/[&"'><]/, replacements)
end
end
end