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# Redmine - project management software
# Copyright (C) 2006-2016 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'
attr_protected :root_url
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]/ =~ s or s.size > 8
cs = changesets.where(:scmid => s).first
else
cs = changesets.where(:revision => s).first
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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