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############################################################################
# Copyright 2009 Benjamin Kellermann #
# #
# This file is part of dudle. #
# #
# Dudle is free software: you can redistribute it and/or modify it under #
# the terms of the GNU Affero General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# Dudle 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 Affero General Public #
# License for more details. #
# #
# You should have received a copy of the GNU Affero General Public License #
# along with dudle. If not, see <http://www.gnu.org/licenses/>. #
############################################################################
require "time"
class LogEntry
attr_accessor :rev, :timestamp, :comment
def initialize(rev,timestamp,comment)
@rev = rev
@timestamp = timestamp
@comment = comment
end
def to_html(link = true)
ret = "<tr><td>"
ret += "<a href='?revision=#{@rev}' >" if link
ret += "#{@rev}"
ret += "</a>" if link
ret += "</td>"
ret += "<td>#{@timestamp.strftime('%d.%m, %H:%M')}</td>"
ret += "<td class='historycomment'>#{CGI.escapeHTML(@comment)}</td>"
ret += "</tr>"
ret
end
end
class Log
def initialize(a = [])
@log = a
end
def min
ret = @log[0]
@log.each{|l|
ret.rev = l if l.rev < ret.rev
}
ret
end
def max
ret = @log[-1]
@log.each{|l|
ret.rev = l if l.rev > ret.rev
}
ret
end
def [](revision)
if revision.class == Fixnum
@log.each{|l|
return l if l.rev == revision
}
raise "No such revision found #{revision}"
else
min_r, max_r = "",""
@log.each_with_index{|l,i|
min_r = i if l.rev == revision.min
max_r = i if l.rev == revision.max
}
min_r = @log.index(min) if min_r == ""
max_r = @log.index(max) if max_r == ""
return Log.new(@log[min_r..max_r])
end
end
def add(revision,timestamp,comment)
@log << LogEntry.new(revision,timestamp,comment)
@log.sort!{|a,b| a.rev <=> b.rev}
end
def to_html(notlinkrevision)
ret = "<table><tr><th>Version</th><th>Date</th><th>Comment</th></tr>"
self.each do |l|
ret += l.to_html(notlinkrevision != l.rev)
end
ret += "</table>"
ret
end
def each
@log.each{|e| yield(e)}
end
def collect
@log.collect{|e| yield(e)}
end
def comment_matches(regex)
Log.new(@log.collect{|e| e if e.comment =~ regex}.compact)
end
def flatten
h = []
minrev = min.rev
rev = max.rev
while rev > minrev
elem = self[rev]
prevrev = elem.comment.scan(/^Reverted Poll to revision (\d*)$/).flatten[0]
if prevrev
rev = prevrev.to_i
else
h << elem
rev += -1
end
end
h.sort!{|a,b| a.rev <=> b.rev}
a = []
begin
a << h.pop
end while a.last.comment =~ /^Column .*$/
a.pop
a.sort!{|a1,b1| a1.rev <=> b1.rev}
Log.new(a)
end
end
if __FILE__ == $0
require "test/unit"
class Log_test < Test::Unit::TestCase
def test_indexes
l = Log.new
l.add(10,Time.now,"baz 10")
20.times{|i|
l.add(i,Time.now,"foo #{i}") unless i == 10
}
assert_equal(0,l.min.rev)
assert_equal(19,l.max.rev)
assert_equal("baz 10",l[10].comment)
p = l[9..11]
assert_equal([9,10,11],[p[9].rev,p[10].rev,p[11].rev])
assert_equal([10],l.comment_matches(/^baz \d*$/).collect{|e| e.rev})
end
end
end
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