# 

# Internal file for GetGitRevisionDescription.cmake

#

# Requires CMake 2.6 or newer (uses the 'function' command)

#

# Original Author:

# 2009-2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>

# http://academic.cleardefinition.com

# Iowa State University HCI Graduate Program/VRAC

#

# Copyright Iowa State University 2009-2010.

# Distributed under the Boost Software License, Version 1.0.

# (See accompanying file LICENSE_1_0.txt or copy at

# http://www.boost.org/LICENSE_1_0.txt)

set(HEAD_HASH)

file(READ "@HEAD_FILE@" HEAD_CONTENTS LIMIT 1024)

string(STRIP "${HEAD_CONTENTS}" HEAD_CONTENTS)

if(HEAD_CONTENTS MATCHES "ref")

	# named branch

	string(REPLACE "ref: " "" HEAD_REF "${HEAD_CONTENTS}")

	if(EXISTS "@GIT_DIR@/${HEAD_REF}")

		configure_file("@GIT_DIR@/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY)

	elseif(EXISTS "@GIT_DIR@/logs/${HEAD_REF}")

		configure_file("@GIT_DIR@/logs/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY)

		set(HEAD_HASH "${HEAD_REF}")

	endif()

else()

	# detached HEAD

	configure_file("@GIT_DIR@/HEAD" "@GIT_DATA@/head-ref" COPYONLY)

endif()

if(NOT HEAD_HASH)

	file(READ "@GIT_DATA@/head-ref" HEAD_HASH LIMIT 1024)

	string(STRIP "${HEAD_HASH}" HEAD_HASH)

endif()