# A Feeder reads in files for RubyDiff's processor to
# run over. GitFeeder reads them from a git repository.
#
# Example Usage:
# ruby_diff --git v0.1:lib --git v0.1:lib
# ruby_diff --git HEAD^2 --git HEAD^1 --git HEAD
class GitFeeder
GitFile = Struct.new :access, :type, :hash, :name
attr_accessor :files
attr_accessor :path
include Enumerable
include GitSupport
# Expects something in the form of REV:PATH
# --git REV:[PATH]
def initialize(path)
@path = path
rev,path = path.split(":",2)
raise ArgumentError.new("Must supply a git revision") unless rev
path = File.expand_path(path) if path
init_git(path || '.')
@file_pattern = if @search_path == ''
"**.rb"
elsif @search_path =~ /\.rb#{File::SEPARATOR}$/
# So appending each piece into the search path during init_git
# causes the search path to always end with a /
@search_path[0...-1]
else
File.join(@search_path,"**.rb")
end
@files = []
FileUtils.cd(@working_dir) do
git_list = git "ls-tree -r #{rev}"
git_list.each_line do |line|
file = GitFile.new(*line.chomp.split(/\s+/,4))
if file.type == 'blob' and File.fnmatch(@file_pattern, file.name)
@files << file
end
end
end
end
def each
FileUtils.cd(@working_dir) do
@files.each do |file|
code = git "show #{file.hash}"
yield(code, file.name)
end
end
end
end
