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# Redmine - project management software
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# Copyright (C) 2006-2016 Jean-Philippe Lang
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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require 'redmine/scm/adapters/mercurial_adapter'
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class Repository::Mercurial < Repository
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# sort changesets by revision number
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has_many :changesets,
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lambda {order("#{Changeset.table_name}.id DESC")},
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:foreign_key => 'repository_id'
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attr_protected :root_url
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validates_presence_of :url
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# number of changesets to fetch at once
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FETCH_AT_ONCE = 100
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def self.human_attribute_name(attribute_key_name, *args)
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attr_name = attribute_key_name.to_s
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if attr_name == "url"
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attr_name = "path_to_repository"
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end
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super(attr_name, *args)
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end
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def self.scm_adapter_class
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Redmine::Scm::Adapters::MercurialAdapter
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end
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def self.scm_name
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'Mercurial'
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end
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def supports_directory_revisions?
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true
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end
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def supports_revision_graph?
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true
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end
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def repo_log_encoding
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'UTF-8'
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end
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# Returns the readable identifier for the given mercurial changeset
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def self.format_changeset_identifier(changeset)
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"#{changeset.revision}:#{changeset.scmid[0, 12]}"
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end
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# Returns the identifier for the given Mercurial changeset
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def self.changeset_identifier(changeset)
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changeset.scmid
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end
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def diff_format_revisions(cs, cs_to, sep=':')
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super(cs, cs_to, ' ')
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end
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def modify_entry_lastrev_identifier(entry)
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if entry.lastrev && entry.lastrev.identifier
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entry.lastrev.identifier = scmid_for_inserting_db(entry.lastrev.identifier)
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end
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end
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private :modify_entry_lastrev_identifier
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def entry(path=nil, identifier=nil)
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entry = scm.entry(path, identifier)
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return nil if entry.nil?
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modify_entry_lastrev_identifier(entry)
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entry
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end
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def scm_entries(path=nil, identifier=nil)
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entries = scm.entries(path, identifier)
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return nil if entries.nil?
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entries.each {|entry| modify_entry_lastrev_identifier(entry)}
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entries
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end
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protected :scm_entries
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# Finds and returns a revision with a number or the beginning of a hash
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def find_changeset_by_name(name)
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return nil if name.blank?
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s = name.to_s
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if /[^\d]/ =~ s or s.size > 8
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cs = changesets.where(:scmid => s).first
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else
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cs = changesets.where(:revision => s).first
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end
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return cs if cs
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changesets.where('scmid LIKE ?', "#{s}%").first
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end
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# Returns the latest changesets for +path+; sorted by revision number
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#
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# Because :order => 'id DESC' is defined at 'has_many',
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# there is no need to set 'order'.
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# But, MySQL test fails.
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# Sqlite3 and PostgreSQL pass.
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# Is this MySQL bug?
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def latest_changesets(path, rev, limit=10)
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changesets.
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includes(:user).
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where(latest_changesets_cond(path, rev, limit)).
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references(:user).
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limit(limit).
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order("#{Changeset.table_name}.id DESC").
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to_a
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end
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def is_short_id_in_db?
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return @is_short_id_in_db unless @is_short_id_in_db.nil?
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cs = changesets.first
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@is_short_id_in_db = (!cs.nil? && cs.scmid.length != 40)
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end
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private :is_short_id_in_db?
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def scmid_for_inserting_db(scmid)
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is_short_id_in_db? ? scmid[0, 12] : scmid
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end
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def nodes_in_branch(rev, branch_limit)
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scm.nodes_in_branch(rev, :limit => branch_limit).collect do |b|
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scmid_for_inserting_db(b)
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end
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end
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def tag_scmid(rev)
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scmid = scm.tagmap[rev]
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scmid.nil? ? nil : scmid_for_inserting_db(scmid)
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end
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def latest_changesets_cond(path, rev, limit)
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cond, args = [], []
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if scm.branchmap.member? rev
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# Mercurial named branch is *stable* in each revision.
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# So, named branch can be stored in database.
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# Mercurial provides *bookmark* which is equivalent with git branch.
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# But, bookmark is not implemented.
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cond << "#{Changeset.table_name}.scmid IN (?)"
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# Revisions in root directory and sub directory are not equal.
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# So, in order to get correct limit, we need to get all revisions.
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# But, it is very heavy.
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# Mercurial does not treat directory.
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# So, "hg log DIR" is very heavy.
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branch_limit = path.blank? ? limit : ( limit * 5 )
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args << nodes_in_branch(rev, branch_limit)
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elsif last = rev ? find_changeset_by_name(tag_scmid(rev) || rev) : nil
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cond << "#{Changeset.table_name}.id <= ?"
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args << last.id
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end
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unless path.blank?
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cond << "EXISTS (SELECT * FROM #{Change.table_name}
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WHERE #{Change.table_name}.changeset_id = #{Changeset.table_name}.id
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AND (#{Change.table_name}.path = ?
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OR #{Change.table_name}.path LIKE ? ESCAPE ?))"
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args << path.with_leading_slash
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args << "#{path.with_leading_slash.gsub(%r{[%_\\]}) { |s| "\\#{s}" }}/%" << '\\'
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end
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[cond.join(' AND '), *args] unless cond.empty?
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end
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private :latest_changesets_cond
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def fetch_changesets
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return if scm.info.nil?
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scm_rev = scm.info.lastrev.revision.to_i
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db_rev = latest_changeset ? latest_changeset.revision.to_i : -1
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return unless db_rev < scm_rev # already up-to-date
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logger.debug "Fetching changesets for repository #{url}" if logger
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(db_rev + 1).step(scm_rev, FETCH_AT_ONCE) do |i|
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scm.each_revision('', i, [i + FETCH_AT_ONCE - 1, scm_rev].min) do |re|
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transaction do
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parents = (re.parents || []).collect do |rp|
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find_changeset_by_name(scmid_for_inserting_db(rp))
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end.compact
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cs = Changeset.create(:repository => self,
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:revision => re.revision,
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:scmid => scmid_for_inserting_db(re.scmid),
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:committer => re.author,
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:committed_on => re.time,
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:comments => re.message,
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:parents => parents)
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unless cs.new_record?
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re.paths.each do |e|
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if from_revision = e[:from_revision]
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e[:from_revision] = scmid_for_inserting_db(from_revision)
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end
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cs.create_change(e)
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end
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end
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end
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end
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end
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end
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end
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