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- #
- # Internal file for GetGitRevisionDescription.cmake
- #
- # Requires CMake 2.6 or newer (uses the 'function' command)
- #
- # Original Author:
- # 2009-2010 Ryan Pavlik <[email protected]> <[email protected]>
- # 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)
- else()
- configure_file("@GIT_DIR@/packed-refs" "@GIT_DATA@/packed-refs" COPYONLY)
- file(READ "@GIT_DATA@/packed-refs" PACKED_REFS)
- if(${PACKED_REFS} MATCHES "([0-9a-z]*) ${HEAD_REF}")
- set(HEAD_HASH "${CMAKE_MATCH_1}")
- endif()
- 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()
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