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- # frozen_string_literal: true
-
- # Redmine - project management software
- # Copyright (C) 2006-2017 Jean-Philippe Lang
- #
- # This program is free software; you can redistribute it and/or
- # modify it under the terms of the GNU General Public License
- # as published by the Free Software Foundation; either version 2
- # of the License, or (at your option) any later version.
- #
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
- #
- # You should have received a copy of the GNU General Public License
- # along with this program; if not, write to the Free Software
- # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-
- require 'redmine/scm/adapters/mercurial_adapter'
-
- class Repository::Mercurial < Repository
- # sort changesets by revision number
- has_many :changesets,
- lambda {order("#{Changeset.table_name}.id DESC")},
- :foreign_key => 'repository_id'
-
- validates_presence_of :url
-
- # number of changesets to fetch at once
- FETCH_AT_ONCE = 100
-
- def self.human_attribute_name(attribute_key_name, *args)
- attr_name = attribute_key_name.to_s
- if attr_name == "url"
- attr_name = "path_to_repository"
- end
- super(attr_name, *args)
- end
-
- def self.scm_adapter_class
- Redmine::Scm::Adapters::MercurialAdapter
- end
-
- def self.scm_name
- 'Mercurial'
- end
-
- def supports_directory_revisions?
- true
- end
-
- def supports_revision_graph?
- true
- end
-
- def repo_log_encoding
- 'UTF-8'
- end
-
- # Returns the readable identifier for the given mercurial changeset
- def self.format_changeset_identifier(changeset)
- "#{changeset.revision}:#{changeset.scmid[0, 12]}"
- end
-
- # Returns the identifier for the given Mercurial changeset
- def self.changeset_identifier(changeset)
- changeset.scmid
- end
-
- def diff_format_revisions(cs, cs_to, sep=':')
- super(cs, cs_to, ' ')
- end
-
- def modify_entry_lastrev_identifier(entry)
- if entry.lastrev && entry.lastrev.identifier
- entry.lastrev.identifier = scmid_for_inserting_db(entry.lastrev.identifier)
- end
- end
- private :modify_entry_lastrev_identifier
-
- def entry(path=nil, identifier=nil)
- entry = scm.entry(path, identifier)
- return nil if entry.nil?
- modify_entry_lastrev_identifier(entry)
- entry
- end
-
- def scm_entries(path=nil, identifier=nil)
- entries = scm.entries(path, identifier)
- return nil if entries.nil?
- entries.each {|entry| modify_entry_lastrev_identifier(entry)}
- entries
- end
- protected :scm_entries
-
- # Finds and returns a revision with a number or the beginning of a hash
- def find_changeset_by_name(name)
- return nil if name.blank?
- s = name.to_s
- if /[^\d]/.match?(s) || s.size > 8
- cs = changesets.where(:scmid => s).first
- else
- cs = changesets.find_by(:revision => s)
- end
- return cs if cs
- changesets.where('scmid LIKE ?', "#{s}%").first
- end
-
- # Returns the latest changesets for +path+; sorted by revision number
- #
- # Because :order => 'id DESC' is defined at 'has_many',
- # there is no need to set 'order'.
- # But, MySQL test fails.
- # Sqlite3 and PostgreSQL pass.
- # Is this MySQL bug?
- def latest_changesets(path, rev, limit=10)
- changesets.
- includes(:user).
- where(latest_changesets_cond(path, rev, limit)).
- references(:user).
- limit(limit).
- order("#{Changeset.table_name}.id DESC").
- to_a
- end
-
- def is_short_id_in_db?
- return @is_short_id_in_db unless @is_short_id_in_db.nil?
- cs = changesets.first
- @is_short_id_in_db = (!cs.nil? && cs.scmid.length != 40)
- end
- private :is_short_id_in_db?
-
- def scmid_for_inserting_db(scmid)
- is_short_id_in_db? ? scmid[0, 12] : scmid
- end
-
- def nodes_in_branch(rev, branch_limit)
- scm.nodes_in_branch(rev, :limit => branch_limit).collect do |b|
- scmid_for_inserting_db(b)
- end
- end
-
- def tag_scmid(rev)
- scmid = scm.tagmap[rev]
- scmid.nil? ? nil : scmid_for_inserting_db(scmid)
- end
-
- def latest_changesets_cond(path, rev, limit)
- cond, args = [], []
- if scm.branchmap.member? rev
- # Mercurial named branch is *stable* in each revision.
- # So, named branch can be stored in database.
- # Mercurial provides *bookmark* which is equivalent with git branch.
- # But, bookmark is not implemented.
- cond << "#{Changeset.table_name}.scmid IN (?)"
- # Revisions in root directory and sub directory are not equal.
- # So, in order to get correct limit, we need to get all revisions.
- # But, it is very heavy.
- # Mercurial does not treat directory.
- # So, "hg log DIR" is very heavy.
- branch_limit = path.blank? ? limit : ( limit * 5 )
- args << nodes_in_branch(rev, branch_limit)
- elsif last = rev ? find_changeset_by_name(tag_scmid(rev) || rev) : nil
- cond << "#{Changeset.table_name}.id <= ?"
- args << last.id
- end
- unless path.blank?
- cond << "EXISTS (SELECT * FROM #{Change.table_name}
- WHERE #{Change.table_name}.changeset_id = #{Changeset.table_name}.id
- AND (#{Change.table_name}.path = ?
- OR #{Change.table_name}.path LIKE ? ESCAPE ?))"
- args << path.with_leading_slash
- args << "#{path.with_leading_slash.gsub(%r{[%_\\]}) { |s| "\\#{s}" }}/%" << '\\'
- end
- [cond.join(' AND '), *args] unless cond.empty?
- end
- private :latest_changesets_cond
-
- def fetch_changesets
- return if scm.info.nil?
- scm_rev = scm.info.lastrev.revision.to_i
- db_rev = latest_changeset ? latest_changeset.revision.to_i : -1
- return unless db_rev < scm_rev # already up-to-date
-
- logger.debug "Fetching changesets for repository #{url}" if logger
- (db_rev + 1).step(scm_rev, FETCH_AT_ONCE) do |i|
- scm.each_revision('', i, [i + FETCH_AT_ONCE - 1, scm_rev].min) do |re|
- transaction do
- parents = (re.parents || []).collect do |rp|
- find_changeset_by_name(scmid_for_inserting_db(rp))
- end.compact
- cs = Changeset.create(:repository => self,
- :revision => re.revision,
- :scmid => scmid_for_inserting_db(re.scmid),
- :committer => re.author,
- :committed_on => re.time,
- :comments => re.message,
- :parents => parents)
- unless cs.new_record?
- re.paths.each do |e|
- if from_revision = e[:from_revision]
- e[:from_revision] = scmid_for_inserting_db(from_revision)
- end
- cs.create_change(e)
- end
- end
- end
- end
- end
- end
- end
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