#!/usr/bin/ruby
# Usage examples:
#   qpp foo.pro         => ./_file.qmake
#   qpp foo/bar/        => ./_file.qmake
#
cwd = File.dirname( __FILE__ )
require 'find'
require 'ftools'
require "#{cwd}/platform.rb"

def find_sources()
  Find.find( '.' ) do |path|
    if File.directory?( path )
      excludes = ['.svn', 'tests', '_build', 'contrib']
      case Platform::IMPL
        when :macosx then excludes << 'win' << 'linux'
        when :mswin, :cygwin then excludes << 'mac' << 'linux'
        when :linux, :freebsd then excludes << 'win' << 'mac'
        else excludes << 'win' << 'mac' << 'linux'
      end
      Find.prune if excludes.include?( File.basename( path ) ) or (path != "." and not Dir["#{path}/*.pro"].empty? )
    elsif File.file?( path )
      case Platform::IMPL
        when :macosx then next if /_(linux|win)\.(cpp|h)$/.match( path )
        when :mswin, :cygwin then next if /_(mac|linux)\.(cpp|h)$/.match( path )
        when :linux, :freebsd then next if /_(mac|win)\.(cpp|h)$/.match( path )
      end
      yield( path, File.extname( path ) ) unless File.basename(path) == 'EXAMPLE.cpp' 
    end
  end
end

########################################################################### impl
sources = Array.new
headers = Array.new
forms = Array.new
resources = Array.new

abort "usage: qpp file.pro.in" unless File.file? ARGV[0]

File.open( ARGV[0] ).each_line do |line|
  line.chomp!

  matches = /^\s*TEMPLATE += (.*)$/.match( line )
  if !matches.nil?
    exit if matches[1].downcase == 'subdirs'
  end

  matches = /^\s*VERSION += +((\d\.){0,2}\d)/.match( line )
  if !matches.nil? && !File.file?( "_version.h" )
    File.open( "_version.h", 'w' ) { |f| f.write( "#define VERSION \"#{matches[1]}\"\n" ) }
  end
end

Dir.chdir File.dirname(ARGV[0]) do
  find_sources do |path, ext|
    path.sub!( /^.\//, '' )
    case ext
      when ".h"   then headers   << path
      when ".ui"  then forms     << path
      when ".qrc" then resources << path
      when ".cpp" then sources   << path
      when ".mm"  then sources   << path if Platform::IMPL == :macosx
      when ".m"   then sources   << path if Platform::IMPL == :macosx
    end
  end
end

def write_section( section, array )
  return if array.empty?
  print "#{section} +="
  array.each { |path| print " \\\n\t#{path}" }
  puts
end

write_section( "SOURCES", sources )
write_section( "HEADERS", headers )
write_section( "FORMS", forms )
write_section( "RESOURCES", resources )