Class: SvnHelper

Inherits:
Object
  • Object
show all
Defined in:
lib/svn_helper.rb

Constant Summary collapse

TRUNK_REGEXP =

matches a trunk checkout

/\/trunk$/
BRANCH_REGEXP =

matches a branch checkout

/\/branches\/\S+$/
RELEASE_BRANCH_REGEXP =

matches release branch names

/^RB-([0-9.]+)/

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ SvnHelper

Returns a new instance of SvnHelper.



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# File 'lib/svn_helper.rb', line 14

def initialize
  begin
    @svn_path = `which svn`
    raise SvnNotFound, "svn not found in path" if @svn_path.empty?
    svn_info = `svn info`
    raise PwdNotSvn, "Current directory does not appear to be under SVN" unless $? == 0
    svn_info.detect{|line| line =~ /^URL: (.*)$/}
    @url = $1 # The current url
    raise UnrecognizedSvnUrl, "SVN url is neither trunk nor a branch: #{@url}" unless trunk? || branch?
  end
end

Instance Attribute Details

#url ⇒ Object (readonly)

Returns the value of attribute url.



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# File 'lib/svn_helper.rb', line 12

def url
  @url
end

Instance Method Details

#base_url ⇒ Object 



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# File 'lib/svn_helper.rb', line 36

def base_url
  @base_url ||= @url.gsub(trunk? ? TRUNK_REGEXP : BRANCH_REGEXP, '')
end

#branch? ⇒ Boolean

Is the current directory a branch checkout?

Returns:

  • (Boolean) 


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# File 'lib/svn_helper.rb', line 32

def branch?
  @url =~ BRANCH_REGEXP
end

#branch_url(branch) ⇒ Object 



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# File 'lib/svn_helper.rb', line 64

def branch_url(branch)
  "#{base_url}/branches/#{branch}"
end

#branches ⇒ Object 



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# File 'lib/svn_helper.rb', line 40

def branches
  @branches ||= `svn ls #{base_url}/branches`.split("\n").map{|name| name.sub(/\/$/, '')}
end

#head_revision ⇒ Object 



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# File 'lib/svn_helper.rb', line 56

def head_revision
  # TODO: there must be a better way to compute this
  @head_revision ||= `svn log --limit 1 -q`.split[1].sub(/^r/, '')
end

#latest_release_branch ⇒ Object 



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# File 'lib/svn_helper.rb', line 48

def latest_release_branch
  begin
    @latest_release ||= branches.inject(Revision.new('0')){|rev, branch| branch =~ RELEASE_BRANCH_REGEXP ? [rev, Revision.new($1)].max : rev}
    raise LatestReleaseBranchNotFound, "could not find a latest release branch\ntry specifying a source with '-b BRANCH' instead" if @latest_release == Revision.new('0')
    @latest_release_branch ||= "RB-#{@latest_release}"
  end
end

#latest_release_branch_url ⇒ Object 



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# File 'lib/svn_helper.rb', line 68

def latest_release_branch_url
  branch_url(latest_release_branch)
end

#trunk? ⇒ Boolean

Is the current directory a trunk checkout?

Returns:

  • (Boolean) 


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# File 'lib/svn_helper.rb', line 27

def trunk?
  @url =~ TRUNK_REGEXP
end

#trunk_url ⇒ Object 



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# File 'lib/svn_helper.rb', line 60

def trunk_url
  "#{base_url}/trunk"
end

#valid_branch?(branch) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/svn_helper.rb', line 44

def valid_branch?(branch)
  branches.include? branch
end