| # |
| # 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) |
| 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() |
