Brenden Blanco | d8acf6f | 2015-06-07 22:32:33 -0700 | [diff] [blame] | 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 | set(HEAD_HASH) |
| 17 | |
| 18 | file(READ "@HEAD_FILE@" HEAD_CONTENTS LIMIT 1024) |
| 19 | |
| 20 | string(STRIP "${HEAD_CONTENTS}" HEAD_CONTENTS) |
| 21 | if(HEAD_CONTENTS MATCHES "ref") |
| 22 | # named branch |
| 23 | string(REPLACE "ref: " "" HEAD_REF "${HEAD_CONTENTS}") |
| 24 | if(EXISTS "@GIT_DIR@/${HEAD_REF}") |
| 25 | configure_file("@GIT_DIR@/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY) |
| 26 | elseif(EXISTS "@GIT_DIR@/logs/${HEAD_REF}") |
| 27 | configure_file("@GIT_DIR@/logs/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY) |
| 28 | set(HEAD_HASH "${HEAD_REF}") |
| 29 | endif() |
| 30 | else() |
| 31 | # detached HEAD |
| 32 | configure_file("@GIT_DIR@/HEAD" "@GIT_DATA@/head-ref" COPYONLY) |
| 33 | endif() |
| 34 | |
| 35 | if(NOT HEAD_HASH) |
| 36 | file(READ "@GIT_DATA@/head-ref" HEAD_HASH LIMIT 1024) |
| 37 | string(STRIP "${HEAD_HASH}" HEAD_HASH) |
| 38 | endif() |