Class: Braid::Operations::Git

Inherits:
Proxy
  • Object
show all
Defined in:
lib/braid/operations.rb

Instance Method Summary collapse

Methods inherited from Proxy

command, #require_version, #require_version!, #version

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Braid::Operations::Proxy

Instance Method Details

#apply(diff, *args) ⇒ Object

Raises:



333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
 
# File 'lib/braid/operations.rb', line 333

def apply(diff, *args)
  status, err = nil, nil

  command = "git apply --index --whitespace=nowarn #{args.join(' ')} -"

  if USE_OPEN3
    Open3.popen3(command) do |stdin, stdout, stderr, wait_thread|
      stdin.puts(diff)
      stdin.close
      err = stderr.read
      # Under earlier jrubies this is not correctly passed so add in check
      status = wait_thread.value if wait_thread # Process::Status object returned.
    end
    # Handle earlier jrubies such as 1.6.7.2
    status = $?.exitstatus if status.nil?
  else
    status = Open4.popen4(command) do |pid, stdin, stdout, stderr|
      stdin.puts(diff)
      stdin.close
      err = stderr.read
    end.exitstatus
  end

  raise ShellExecutionError, err unless status == 0
  true
end

#branch ⇒ Object 



328
329
330
331
 
# File 'lib/braid/operations.rb', line 328

def branch
  status, out, err = exec!("git branch | grep '*'")
  out[2..-1]
end

#checkout(treeish) ⇒ Object 



191
192
193
194
 
# File 'lib/braid/operations.rb', line 191

def checkout(treeish)
  invoke(:checkout, treeish)
  true
end

#clone(*args) ⇒ Object 



360
361
362
363
 
# File 'lib/braid/operations.rb', line 360

def clone(*args)
  # overrides builtin
  invoke(:clone, *args)
end

#commit(message, *args) ⇒ Object 



163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
 
# File 'lib/braid/operations.rb', line 163

def commit(message, *args)
  cmd = 'git commit --no-verify'
  if message # allow nil
    message_file = Tempfile.new("braid_commit")
    message_file.print("Braid: #{message}")
    message_file.flush
    message_file.close
    cmd << " -F #{message_file.path}"
  end
  cmd << " #{args.join(' ')}" unless args.empty?
  status, out, err = exec(cmd)
  message_file.unlink if message_file

  if status == 0
    true
  elsif out.match(/nothing.* to commit/)
    false
  else
    raise ShellExecutionError, err
  end
end

#diff_tree(src_tree, dst_tree, prefix = nil) ⇒ Object 



308
309
310
311
312
313
 
# File 'lib/braid/operations.rb', line 308

def diff_tree(src_tree, dst_tree, prefix = nil)
  cmd = "git diff-tree -p --binary #{src_tree} #{dst_tree}"
  cmd << " --src-prefix=a/#{prefix}/ --dst-prefix=b/#{prefix}/" if prefix
  status, out, err = exec!(cmd)
  out
end

#ensure_clean! ⇒ Object 



320
321
322
 
# File 'lib/braid/operations.rb', line 320

def ensure_clean!
  status_clean? || raise(LocalChangesPresent)
end

#fetch(remote = nil, *args) ⇒ Object 



185
186
187
188
189
 
# File 'lib/braid/operations.rb', line 185

def fetch(remote = nil, *args)
  args.unshift "-n #{remote}" if remote
  # open4 messes with the pipes of index-pack
  sh("git fetch #{args.join(' ')} > #{Gem.win_platform? ? 'nul' : '/dev/null'}")
end

#head ⇒ Object 



324
325
326
 
# File 'lib/braid/operations.rb', line 324

def head
  rev_parse('HEAD')
end

#merge_base(target, source) ⇒ Object

Returns the base commit or nil.



197
198
199
200
201
 
# File 'lib/braid/operations.rb', line 197

def merge_base(target, source)
  invoke(:merge_base, target, source)
rescue ShellExecutionError
  nil
end

#merge_ours(opt) ⇒ Object

Implies no commit.



234
235
236
237
 
# File 'lib/braid/operations.rb', line 234

def merge_ours(opt)
  invoke(:merge, '-s ours --no-commit', opt)
  true
end

#merge_subtree(opt) ⇒ Object

Implies no commit.



240
241
242
243
244
245
246
 
# File 'lib/braid/operations.rb', line 240

def merge_subtree(opt)
  # TODO which options are needed?
  invoke(:merge, '-s subtree --no-commit --no-ff', opt)
  true
rescue ShellExecutionError
  raise MergeError
end

#merge_trees(base_treeish, local_treeish, remote_treeish) ⇒ Object

Merge three trees (local_treeish should match the current state of the index) and update the index and working tree.

The usage of “git merge-recursive” doesn’t seem to be officially documented, but it does accept trees. When a single base is passed, the “recursive” part (i.e., merge of bases) does not come into play and only the trees matter. But for some reason, Git’s smartest tree merge algorithm is only available via the “recursive” strategy.



256
257
258
259
260
261
 
# File 'lib/braid/operations.rb', line 256

def merge_trees(base_treeish, local_treeish, remote_treeish)
  invoke(:merge_recursive, base_treeish, "-- #{local_treeish} #{remote_treeish}")
  true
rescue ShellExecutionError
  raise MergeError
end

#read_ls_files(prefix) ⇒ Object 



263
264
265
 
# File 'lib/braid/operations.rb', line 263

def read_ls_files(prefix)
  invoke('ls-files', prefix)
end

#read_tree_prefix_i(treeish, prefix) ⇒ Object

Read tree into the index, regardless of the state of the working tree. Most useful with a temporary index file.



275
276
277
278
 
# File 'lib/braid/operations.rb', line 275

def read_tree_prefix_i(treeish, prefix)
  invoke(:read_tree, "--prefix=#{prefix}/ -i", treeish)
  true
end

#read_tree_prefix_u(treeish, prefix) ⇒ Object

Read tree into the index and working tree.



268
269
270
271
 
# File 'lib/braid/operations.rb', line 268

def read_tree_prefix_u(treeish, prefix)
  invoke(:read_tree, "--prefix=#{prefix}/ -u", treeish)
  true
end

#remote_add(remote, path, branch) ⇒ Object

Implies tracking.



210
211
212
213
 
# File 'lib/braid/operations.rb', line 210

def remote_add(remote, path, branch)
  invoke(:remote, 'add', "-t #{branch} -m #{branch}", remote, path)
  true
end

#remote_rm(remote) ⇒ Object 



215
216
217
218
 
# File 'lib/braid/operations.rb', line 215

def remote_rm(remote)
  invoke(:remote, 'rm', remote)
  true
end

#remote_url(remote) ⇒ Object

Checks git remotes.



221
222
223
224
225
226
 
# File 'lib/braid/operations.rb', line 221

def remote_url(remote)
  key = "remote.#{remote}.url"
  invoke(:config, key)
rescue ShellExecutionError
  nil
end

#reset_hard(target) ⇒ Object 



228
229
230
231
 
# File 'lib/braid/operations.rb', line 228

def reset_hard(target)
  invoke(:reset, '--hard', target)
  true
end

#rev_parse(opt) ⇒ Object 



203
204
205
206
207
 
# File 'lib/braid/operations.rb', line 203

def rev_parse(opt)
  invoke(:rev_parse, opt)
rescue ShellExecutionError
  raise UnknownRevision, opt
end

#rm_r(path) ⇒ Object 



298
299
300
301
 
# File 'lib/braid/operations.rb', line 298

def rm_r(path)
  invoke(:rm, '-r', path)
  true
end

#status_clean? ⇒ Boolean

Returns:

  • (Boolean) 


315
316
317
318
 
# File 'lib/braid/operations.rb', line 315

def status_clean?
  status, out, err = exec('git status')
  !out.split("\n").grep(/nothing to commit/).empty?
end

#tree_hash(path, treeish = 'HEAD') ⇒ Object 



303
304
305
306
 
# File 'lib/braid/operations.rb', line 303

def tree_hash(path, treeish = 'HEAD')
  out = invoke(:ls_tree, treeish, '-d', path)
  out.split[2]
end

#with_temporary_index ⇒ Object

Execute a block using a temporary git index file, initially empty.



286
287
288
289
290
291
292
293
294
295
296
 
# File 'lib/braid/operations.rb', line 286

def with_temporary_index()
  Dir.mktmpdir("braid_index") do |dir|
    orig_index_file = ENV["GIT_INDEX_FILE"]
    ENV["GIT_INDEX_FILE"] = File.join(dir, "index")
    begin
      yield
    ensure
      ENV["GIT_INDEX_FILE"] = orig_index_file
    end
  end
end

#write_tree ⇒ Object

Write a tree object for the current index and return its ID.



281
282
283
 
# File 'lib/braid/operations.rb', line 281

def write_tree()
  invoke(:write_tree)
end