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module Gitlab
module Diff
class Parser
include Enumerable
def parse(lines)
@lines = lines
lines_obj = []
line_obj_index = 0
line_old = 1
line_new = 1
type = nil
lines_arr = ::Gitlab::InlineDiff.processing lines
lines_arr.each do |line|
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
lines_obj << Gitlab::Diff::Line.new(full_line, type, line_obj_index, line_old, line_new)
line_obj_index += 1
next
else
type = identification_type(line)
lines_obj << Gitlab::Diff::Line.new(full_line, type, line_obj_index, line_old, line_new)
line_obj_index += 1
end
if line[0] == "+"
line_new += 1
elsif line[0] == "-"
line_old += 1
else
line_new += 1
line_old += 1
end
end
lines_obj
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 html_escape(str)
replacements = { '&' => '&', '>' => '>', '<' => '<', '"' => '"', "'" => ''' }
str.gsub(/[&"'><]/, replacements)
end
end
end
end
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