#!/usr/bin/ruby
################################################################################
#
# Copyright (c) 2011, Perforce Software, Inc.  All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1.  Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
#
# 2.  Redistributions in binary form must reproduce the above copyright
#     notice, this list of conditions and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL PERFORCE SOFTWARE, INC. BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# = Description
#
#   Collect the full integration history of a file which can be replayed
#   with //depot/main/p4-tools/server/filelog-rebuild.rb
#
# = Usage
#   
#   integ-history.rb [-C0|-C1] a_filename_in_depot_syntax > history.log
#
# = Important note:
#
#   Automatic case sensitivity detection for 2010.1 server or greater,
#   for previous server releases, you must specify the -C flag:
#   0 for case sensitive server
#   1 for case insensitive server
#
################################################################################

FOUND = Hash.new 
require "open3"

def cmdUsage
    puts("Usage: integ-history.rb [-C0|-C1] filename_in_depot_syntax")
    exit(0)
end

def caseHandling()
    caseType = "sensitive"
    result = `p4 info`
    result.each_line do
       |line| 
       if line =~ /(Server version: .*)/
        puts($1)
       else if line =~ /Case Handling: (.*)/
              printf("Case Handling detected: %s\n",$1)
              caseType = $1
            end
       end
    end
    return caseType
end

def filelog(file,caseType)
    if caseType == "insensitive" 
       file = file.downcase
    end
    if !FOUND.has_key?(file)
       FOUND[file] = true
       result, i = Open3.capture2( "p4", "filelog", "-1", "-t", "#{file}" )
       puts(result)
       result.each_line do
       |line|
         if line =~ /... ... .* (\/\/.*?)#/
           filelog($1,caseType) 
         end
       end
    end
end

def integHistory(arguments)
    file = nil
    caseType = caseHandling()
    arguments.each do
    |arg|
      if (arg == "-C0")
         caseType = "sensitive"
      else if (arg == "-C1")
              caseType = "insensitive"
           else
              file = arg
           end 
      end
    end
    if (!file || file !~ /\/\/.*/)
       cmdUsage()
    end
    printf("Case Handling selected: %s\n",caseType)
    filelog(file, caseType)
end

integHistory(ARGV)