add a script to find large files in git repos

git-large-files

@@ -0,0 +1,23 @@
+#!/usr/bin/env ruby -w
+head, treshold = ARGV
+head ||= 'HEAD'
+Megabyte = 1000 ** 2
+treshold = (treshold || 0.1).to_f * Megabyte
+
+big_files = {}
+
+IO.popen("git rev-list #{head}", 'r') do |rev_list|
+  rev_list.each_line do |commit|
+    commit.chomp!
+    for object in `git ls-tree -zrl #{commit}`.split("\0")
+      bits, type, sha, size, path = object.split(/\s+/, 5)
+      size = size.to_i
+      big_files[sha] = [path, size, commit] if size >= treshold
+    end
+  end
+end
+
+big_files.each do |sha, (path, size, commit)|
+  where = `git show -s #{commit} --format='%h: %cr'`.chomp
+  puts "%4.1fM\t%s\t(%s)" % [size.to_f / Megabyte, path, where]
+end