Class Capistrano::Deploy::SCM::Darcs
In: lib/capistrano/recipes/deploy/scm/darcs.rb
lib/capistrano/recipes/deploy/scm/darcs.rb
Parent: Base

Implements the Capistrano SCM interface for the darcs revision control system (www.abridgegame.org/darcs/).

Methods

checkout   checkout   diff   diff   export   export   head   head   log   log   query_revision   query_revision   sync   sync  

Public Instance methods

Returns the command that will check out the given revision to the given destination. The ‘revision’ parameter must be the ‘hash’ value for the revision in question, as given by ‘darcs changes —xml-output’.

[Source]

    # File lib/capistrano/recipes/deploy/scm/darcs.rb, line 24
24:         def checkout(revision, destination)
25:           scm :get, verbose, "--repo-name=#{destination}", "--to-match='hash #{revision}'", repository
26:         end

Returns the command that will check out the given revision to the given destination. The ‘revision’ parameter must be the ‘hash’ value for the revision in question, as given by ‘darcs changes —xml-output’.

[Source]

    # File lib/capistrano/recipes/deploy/scm/darcs.rb, line 24
24:         def checkout(revision, destination)
25:           scm :get, verbose, "--repo-name=#{destination}", "--to-match='hash #{revision}'", repository
26:         end

Returns the command that will do a "darcs diff" for the two revisions. Each revision must be the ‘hash’ identifier of a darcs revision.

[Source]

    # File lib/capistrano/recipes/deploy/scm/darcs.rb, line 46
46:         def diff(from, to=nil)
47:           scm :diff, "--from-match 'hash #{from}'", to && "--to-match 'hash #{to}'"
48:         end

Returns the command that will do a "darcs diff" for the two revisions. Each revision must be the ‘hash’ identifier of a darcs revision.

[Source]

    # File lib/capistrano/recipes/deploy/scm/darcs.rb, line 46
46:         def diff(from, to=nil)
47:           scm :diff, "--from-match 'hash #{from}'", to && "--to-match 'hash #{to}'"
48:         end

Darcs does not have a real ‘export’ option; there is ‘darcs dist’, but that presupposes a utility that can untar and ungzip the dist file. We‘ll cheat and just do a get, followed by a deletion of the _darcs metadata directory.

[Source]

    # File lib/capistrano/recipes/deploy/scm/darcs.rb, line 40
40:         def export(revision, destination)
41:           [checkout(revision, destination), "rm -rf #{destination}/_darcs"].join(" && ")
42:         end

Darcs does not have a real ‘export’ option; there is ‘darcs dist’, but that presupposes a utility that can untar and ungzip the dist file. We‘ll cheat and just do a get, followed by a deletion of the _darcs metadata directory.

[Source]

    # File lib/capistrano/recipes/deploy/scm/darcs.rb, line 40
40:         def export(revision, destination)
41:           [checkout(revision, destination), "rm -rf #{destination}/_darcs"].join(" && ")
42:         end

Because darcs does not have any support for pseudo-ids, we‘ll just return something here that we can use in the helpers below for determining whether we need to look up the latest revision.

[Source]

    # File lib/capistrano/recipes/deploy/scm/darcs.rb, line 17
17:         def head
18:           :head
19:         end

Because darcs does not have any support for pseudo-ids, we‘ll just return something here that we can use in the helpers below for determining whether we need to look up the latest revision.

[Source]

    # File lib/capistrano/recipes/deploy/scm/darcs.rb, line 17
17:         def head
18:           :head
19:         end

Returns the log of changes between the two revisions. Each revision must be the ‘hash’ identifier of a darcs revision.

[Source]

    # File lib/capistrano/recipes/deploy/scm/darcs.rb, line 52
52:         def log(from, to=nil)
53:           scm :changes, "--from-match 'hash #{from}'", to && "--to-match 'hash #{to}'", "--repo=#{repository}"
54:         end

Returns the log of changes between the two revisions. Each revision must be the ‘hash’ identifier of a darcs revision.

[Source]

    # File lib/capistrano/recipes/deploy/scm/darcs.rb, line 52
52:         def log(from, to=nil)
53:           scm :changes, "--from-match 'hash #{from}'", to && "--to-match 'hash #{to}'", "--repo=#{repository}"
54:         end

Attempts to translate the given revision identifier to a "real" revision. If the identifier is a symbol, it is assumed to be a pseudo-id. Otherwise, it will be immediately returned. If it is a pseudo-id, a set of commands to execute will be yielded, and the result of executing those commands must be returned by the block. This method will then extract the actual revision hash from the returned data.

[Source]

    # File lib/capistrano/recipes/deploy/scm/darcs.rb, line 63
63:         def query_revision(revision)
64:           case revision
65:           when :head
66:             xml = yield(scm(:changes, "--last 1", "--xml-output", "--repo=#{repository}"))
67:             return xml[/hash='(.*?)'/, 1]
68:           else return revision
69:           end
70:         end

Attempts to translate the given revision identifier to a "real" revision. If the identifier is a symbol, it is assumed to be a pseudo-id. Otherwise, it will be immediately returned. If it is a pseudo-id, a set of commands to execute will be yielded, and the result of executing those commands must be returned by the block. This method will then extract the actual revision hash from the returned data.

[Source]

    # File lib/capistrano/recipes/deploy/scm/darcs.rb, line 63
63:         def query_revision(revision)
64:           case revision
65:           when :head
66:             xml = yield(scm(:changes, "--last 1", "--xml-output", "--repo=#{repository}"))
67:             return xml[/hash='(.*?)'/, 1]
68:           else return revision
69:           end
70:         end

Tries to update the destination repository in-place, to bring it up to the given revision. Note that because darcs’ "pull" operation does not support a "to-match" argument (or similar), this basically nukes the destination directory and re-gets it.

[Source]

    # File lib/capistrano/recipes/deploy/scm/darcs.rb, line 32
32:         def sync(revision, destination)
33:           ["rm -rf #{destination}", checkout(revision, destination)].join(" && ")
34:         end

Tries to update the destination repository in-place, to bring it up to the given revision. Note that because darcs’ "pull" operation does not support a "to-match" argument (or similar), this basically nukes the destination directory and re-gets it.

[Source]

    # File lib/capistrano/recipes/deploy/scm/darcs.rb, line 32
32:         def sync(revision, destination)
33:           ["rm -rf #{destination}", checkout(revision, destination)].join(" && ")
34:         end

[Validate]