summaryrefslogtreecommitdiff
path: root/apkbuild-gem-resolver.in
blob: e4ef4247c800a49fa7c8e5a06842c90344a7f0b1 (plain) (blame)
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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
#!/usr/bin/ruby

# APKBUILD dependency resolver for RubyGems
# Copyright (C) 2014-2015 Kaarle Ritvanen

require 'augeas'
require 'optparse'
require 'rubygems/dependency'
require 'rubygems/resolver'
require 'rubygems/spec_fetcher'

class Package
  @@packages = {}

  def self.initialize testing
    @@augeas = Augeas::open(nil, nil, Augeas::NO_MODL_AUTOLOAD)
    dir = Dir.pwd
    @@augeas.transform(
      :lens => 'Shellvars.lns', :incl => dir + '/*/ruby*/APKBUILD'
    )
    @@augeas.load

    apath = '/files' + dir
    fail if @@augeas.match("/augeas#{apath}//error").length > 0

    repos = ['main']
    repos << 'testing' if testing
    for repo in repos
      for pkg in @@augeas.match "#{apath}/#{repo}/*"
        Aport.new(pkg) unless pkg.end_with? '/ruby'
      end
    end

    Subpackage.initialize @@augeas.get("#{apath}/main/ruby/APKBUILD/pkgver")

    @@packages.each_value do |pkg|
      pkg.depends do |dep|
        dep.add_user pkg
      end
    end
  end

  def self.get name
    pkg = @@packages[name]
    raise 'Invalid package name: ' + name unless pkg
    pkg
  end

  def initialize name
    @name = name
    @depends = []
    @users = []
    @@packages[name] = self
  end

  def add_dependency name
    @depends << name
  end

  attr_reader :name

  def depends
    for dep in @depends
      unless @@packages.has_key? dep
        raise "Dependency for #{@name} does not exist: #{dep}"
      end
      yield @@packages[dep]
    end
  end

  def users
    for user in @users
      yield user
    end
  end

  def add_user user
    @users << user
  end
end

class Aport < Package
  def initialize path
    super path.split('/')[-1]
    @path = path + '/APKBUILD/'

    for dep in `echo #{get_param 'depends'}`.split
      # ruby-gems: workaround for v2.6
      add_dependency dep if dep.start_with?('ruby-') && dep != 'ruby-gems'
    end
  end

  def gem
    get_param '_gemname'
  end

  def version
    get_param 'pkgver'
  end

  private

  def get_param name
    value = @@augeas.get(@path + name)
    raise name + ' not defined for ' + @name unless value
    value
  end
end

class Subpackage < Package
  RUBY_SUBPACKAGES = {
    '2.0.0_p353' => {
      'ruby-minitest' => ['minitest', '4.3.2'],
      'ruby-rake' => ['rake', '0.9.6'],
      'ruby-rdoc' => ['rdoc', '4.0.0', 'ruby-json']
    },
    '2.0.0_p481' => {
      'ruby-minitest' => ['minitest', '4.3.2'],
      'ruby-rake' => ['rake', '0.9.6'],
      'ruby-rdoc' => ['rdoc', '4.0.0', 'ruby-json']
    },
    '2.1.5' => {
      'ruby-json' => ['json', '1.8.1'],
      'ruby-minitest' => ['minitest', '4.7.5'],
      'ruby-rake' => ['rake', '10.1.0'],
      'ruby-rdoc' => ['rdoc', '4.1.0', 'ruby-json']
    },
    '2.2.1' => {
      # it's actually 0.4.3 but that version is not published on network
      'ruby-io-console' => ['io-console', '0.4.2'],
      'ruby-json' => ['json', '1.8.1'],
      'ruby-minitest' => ['minitest', '5.4.3'],
      'ruby-rake' => ['rake', '10.4.2'],
      'ruby-rdoc' => ['rdoc', '4.2.0', 'ruby-json']
    },
    '2.2.2' => {
      # it's actually 0.4.3 but that version is not published on network
      'ruby-io-console' => ['io-console', '0.4.2'],
      'ruby-json' => ['json', '1.8.1'],
      'ruby-minitest' => ['minitest', '5.4.3'],
      'ruby-rake' => ['rake', '10.4.2'],
      'ruby-rdoc' => ['rdoc', '4.2.0', 'ruby-json']
    }
  }

  @@subpackages = []

  def self.initialize version
    for name, attrs in RUBY_SUBPACKAGES[version]
      new name, attrs
    end
  end

  def self.each
    for pkg in @@subpackages
      yield pkg
    end
  end

  def initialize name, attrs
    super name
    @gem, @version, *deps = attrs
    for dep in deps
      add_dependency dep
    end
    @@subpackages << self
  end

  attr_reader :gem, :version
end


class Update
  def initialize 
    @gems = {}
    @deps = []
  end

  def require_version name, version
    gem = assign(Package.get(name).gem, name)
    @deps << gem.dependency if gem.require_version version
  end

  def resolve
    for pkg in Subpackage
      require_version pkg.name, pkg.version unless @gems[pkg.gem]
    end

    def check_deps
      @gems.clone.each_value do |gem|
        gem.check_deps
      end
    end

    check_deps

    for req in Gem::Resolver.new(@deps).resolve
      spec = req.spec
      gem = @gems[spec.name]
      gem.require_version spec.version.version if gem
    end

    check_deps

    for name, gem in @gems
      if gem.updated?
        gem.package.users do |user|
          ugem = @gems[user.gem]
          if !ugem || ugem.package.name != user.name
            Gem::Resolver.new(
              [gem.dependency, Gem::Dependency.new(user.gem, user.version)]
            ).resolve
          end
        end
      end
    end
  end

  def each
    @gems.each_value do |gem|
      update = gem.update
      yield update if update
    end
  end

  def assign name, package
    pkg = Package.get package

    if @gems.has_key? name
      gem = @gems[name]
      return gem if pkg == gem.package
      raise "Conflicting packages for gem #{name}: #{gem.package.name} and #{pkg.name}"
    end

    gem = PackagedGem.new self, name, pkg
    @gems[name] = gem
    gem
  end

  private

  class PackagedGem
    def initialize update, name, package
      @update = update
      @name = name
      @package = package
    end

    attr_reader :package

    def require_version version
      if @version
        return false if version == @version
        raise "Conflicting versions for gem #{@name}: #{@version} and #{version}"
      end
      @version = version
      true
    end

    def version
      @version || @package.version
    end

    def updated?
      version != @package.version
    end

    def dependency
      Gem::Dependency.new(@name, version)
    end

    def check_deps
      specs, errors = Gem::SpecFetcher::fetcher.spec_for_dependency(dependency)
      raise "Invalid gem: #{@name}-#{version}" if specs.length == 0
      fail if specs.length > 1
      deps = specs[0][0].runtime_dependencies

      @obsolete_deps = []

      @package.depends do |dep|
        gem = @update.assign(dep.gem, dep.name)
        gem.check_deps
        unless deps.reject! { |sdep| sdep.match? dep.gem, gem.version }
          @obsolete_deps << dep.name
        end
      end

      if deps.length > 0
        raise 'Undeclared dependencies in ' + @package.name + deps.inject('') {
          |s, dep| "#{s}\n#{dep.name} #{dep.requirements_list.join ' '}"
        }
      end
    end

    def update
      updated? || @obsolete_deps.length > 0 ? (
        {
          :name => @package.name,
          :version => version,
          :obsolete_deps => @obsolete_deps.clone
        }
      ) : nil
    end
  end
end


testing = false
OptionParser.new do |opts|
  opts.on('-t', '--testing') do |t|
    testing = t
  end
end.parse! ARGV
Package.initialize testing

latest = {}
for source, gems in Gem::SpecFetcher::fetcher.available_specs(:latest)[0]
  for gem in gems
    latest[gem.name] = gem.version.version
  end
end

update = Update.new
for arg in ARGV
  match = /^(([^-]|-[^\d])+)(-(\d.*))?/.match arg
  name = match[1]
  update.require_version name, match[4] || latest[Package.get(name).gem]
end

update.resolve

for pkg in update
  obs = pkg[:obsolete_deps]
  obs = obs.length == 0 ? nil : " (obsolete dependencies: #{obs.join ', '})"

  puts "#{pkg[:name]}-#{pkg[:version]}#{obs}"
end