CMake/git/GetGitRevisionDescription.cmake.in

   1 #
   2 # Internal file for GetGitRevisionDescription.cmake
   3 #
   4 # Requires CMake 2.6 or newer (uses the 'function' command)
   5 #
   6 # Original Author:
   7 # 2009-2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
   8 # http://academic.cleardefinition.com
   9 # Iowa State University HCI Graduate Program/VRAC
  10 #
  11 # Copyright Iowa State University 2009-2010.
  12 # Distributed under the Boost Software License, Version 1.0.
  13 # (See accompanying file LICENSE_1_0.txt or copy at
  14 # http://www.boost.org/LICENSE_1_0.txt)
  15
  16 file(READ "@HEAD_FILE@" HEAD_CONTENTS LIMIT 1024)
  17
  18 string(STRIP "${HEAD_CONTENTS}" HEAD_CONTENTS)
  19 if(HEAD_CONTENTS MATCHES "ref")
  20     # named branch
  21     string(REPLACE "ref: " "" HEAD_REF "${HEAD_CONTENTS}")
  22
  23     configure_file("@GIT_DIR@/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY)
  24 else()
  25     # detached HEAD
  26     configure_file("@GIT_DIR@/HEAD" "@GIT_DATA@/head-ref" COPYONLY)
  27 endif()
  28
  29 file(READ "@GIT_DATA@/head-ref" HEAD_HASH LIMIT 1024)
  30 string(STRIP "${HEAD_HASH}" HEAD_HASH)