blob: 5283d9cb3aba4bf0c2d501c80808fbc45fe5986a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
require 'formula'
module Homebrew extend self
module Versions
# yields version, sha for all versions in the git history
def self.old_versions f
yielded = []
f.rev_list.each do |sha|
version = f.version_for_sha sha
unless yielded.include? version or version.nil?
yield version, sha
yielded << version
end
end
end
end
def versions
raise "Please `brew install git` first" unless system "/usr/bin/which -s git"
ARGV.formulae.all? do |f|
old_versions = Versions.old_versions f do |version, sha|
print Tty.white
print "#{version.ljust(8)} "
print Tty.reset
puts "git checkout #{sha} #{f.pretty_relative_path}"
end
end
end
end
class Formula
def rev_list
Dir.chdir HOMEBREW_REPOSITORY do
`git rev-list --abbrev-commit HEAD Library/Formula/#{name}.rb`.split
end
end
def sha_for_version version
revlist.find{ |sha| version == version_for(sha) }
end
def version_for_sha sha
# TODO really we should open a new ruby instance and parse the formula
# class and then get the version but this would be too slow (?)
code = Dir.chdir(HOMEBREW_REPOSITORY) do
`git show #{sha}:Library/Formula/#{name}.rb`
end
version = code.match(/class #{Formula.class_s name} < ?Formula.*?(?:version\s|@version\s*=)\s*(?:'|")(.+?)(?:'|").*?end\s/m)
return version[1] unless version.nil?
url = code.match(/class #{Formula.class_s name} < ?Formula.*?(?:url\s|@url\s*=)\s*(?:'|")(.+?)(?:'|").*?end\s/m)
unless url.nil?
version = Pathname.new(url[1]).version
return version unless version.to_s.empty?
end
head = code.match(/class #{Formula.class_s name} < ?Formula.*?head\s'(.*?)'.*?end\s\s/m)
return 'HEAD' unless head.nil?
opoo "Version of #{name} could not be determined for #{sha}."
end
def pretty_relative_path
if Pathname.pwd == HOMEBREW_REPOSITORY
"Library/Formula/#{name}.rb"
else
"#{HOMEBREW_REPOSITORY}/Library/Formula/#{name}.rb"
end
end
end
|
