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################################################################################
#
# Program: 3D Slicer
#
# Copyright (c) Kitware Inc.
#
# See COPYRIGHT.txt
# or http://www.slicer.org/copyright/copyright.txt for details.
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# This file was originally developed by Jean-Christophe Fillion-Robin, Kitware Inc.
# and was partially funded by NIH grant 3P41RR013218-12S1
#
################################################################################
#
# The module defines the following variables:
# GIT_EXECUTABLE - path to git command line client
# GIT_FOUND - true if the command line client was found
#
# If the command line client executable is found the macro
# GIT_WC_INFO(<dir> <var-prefix>)
# is defined to extract information of a git working copy at
# a given location.
#
# The macro defines the following variables:
# <var-prefix>_WC_REVISION_HASH - Current SHA1 hash
# <var-prefix>_WC_REVISION - Current SHA1 hash
# <var-prefix>_WC_REVISION_NAME - Name associated with <var-prefix>_WC_REVISION_HASH
# <var-prefix>_WC_URL - output of command `git config --get remote.origin.url'
# <var-prefix>_WC_ROOT - Same value as working copy URL
# <var-prefix>_WC_GITSVN - Set to false
#
# ... and also the following ones if it's a git-svn repository:
# <var-prefix>_WC_GITSVN - Set to True if it is a
# <var-prefix>_WC_INFO - output of command `git svn info'
# <var-prefix>_WC_URL - url of the associated SVN repository
# <var-prefix>_WC_ROOT - root url of the associated SVN repository
# <var-prefix>_WC_REVISION - current SVN revision number
# <var-prefix>_WC_LAST_CHANGED_AUTHOR - author of last commit
# <var-prefix>_WC_LAST_CHANGED_DATE - date of last commit
# <var-prefix>_WC_LAST_CHANGED_REV - revision of last commit
# <var-prefix>_WC_LAST_CHANGED_LOG - last log of base revision
#
# Example usage:
# find_package(Git)
# if(GIT_FOUND)
# GIT_WC_INFO(${PROJECT_SOURCE_DIR} Project)
# message("Current revision is ${Project_WC_REVISION_HASH}")
# message("git found: ${GIT_EXECUTABLE}")
# endif()
#
# Look for 'git' or 'eg' (easy git)
#
set(git_names git eg)
# Prefer .cmd variants on Windows unless running in a Makefile
# in the MSYS shell.
#
if(WIN32)
if(NOT CMAKE_GENERATOR MATCHES "MSYS")
# Note: Due to a bug in 'git.cmd' preventing it from returning the exit code of 'git',
# we excluded it from the list of executables to search.
# See http://code.google.com/p/msysgit/issues/detail?id=428
# TODO Check if 'git' exists, get the associated version, if the corresponding version
# is known to have a working version of 'git.cmd', use it.
set(git_names git eg.cmd eg)
endif()
endif()
find_program(GIT_EXECUTABLE ${git_names}
PATHS
"C:/Program Files/Git/bin"
"C:/Program Files (x86)/Git/bin"
DOC "git command line client")
mark_as_advanced(GIT_EXECUTABLE)
if(GIT_EXECUTABLE)
macro(GIT_WC_INFO dir prefix)
execute_process(COMMAND ${GIT_EXECUTABLE} rev-parse --verify -q --short=7 HEAD
WORKING_DIRECTORY ${dir}
ERROR_VARIABLE GIT_error
OUTPUT_VARIABLE ${prefix}_WC_REVISION_HASH
OUTPUT_STRIP_TRAILING_WHITESPACE)
set(${prefix}_WC_REVISION ${${prefix}_WC_REVISION_HASH})
if(NOT ${GIT_error} EQUAL 0)
message(SEND_ERROR "Command \"${GIT_EXECUTBALE} rev-parse --verify -q --short=7 HEAD\" in directory ${dir} failed with output:\n${GIT_error}")
else(NOT ${GIT_error} EQUAL 0)
execute_process(COMMAND ${GIT_EXECUTABLE} name-rev ${${prefix}_WC_REVISION_HASH}
WORKING_DIRECTORY ${dir}
OUTPUT_VARIABLE ${prefix}_WC_REVISION_NAME
OUTPUT_STRIP_TRAILING_WHITESPACE)
endif(NOT ${GIT_error} EQUAL 0)
execute_process(COMMAND ${GIT_EXECUTABLE} config --get remote.origin.url
WORKING_DIRECTORY ${dir}
OUTPUT_VARIABLE ${prefix}_WC_URL
OUTPUT_STRIP_TRAILING_WHITESPACE)
set(${prefix}_WC_GITSVN False)
# Check if this git is likely to be a git-svn repository
execute_process(COMMAND ${GIT_EXECUTABLE} config --get-regexp "^svn-remote"
WORKING_DIRECTORY ${dir}
OUTPUT_VARIABLE git_config_output
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if(NOT "${git_config_output}" STREQUAL "")
# In case git-svn is used, attempt to extract svn info
execute_process(COMMAND ${GIT_EXECUTABLE} svn info
WORKING_DIRECTORY ${dir}
TIMEOUT 3
ERROR_VARIABLE git_svn_info_error
OUTPUT_VARIABLE ${prefix}_WC_INFO
RESULT_VARIABLE git_svn_info_result
OUTPUT_STRIP_TRAILING_WHITESPACE)
if(${git_svn_info_result} EQUAL 0)
set(${prefix}_WC_GITSVN True)
string(REGEX REPLACE "^(.*\n)?URL: ([^\n]+).*"
"\\2" ${prefix}_WC_URL "${${prefix}_WC_INFO}")
string(REGEX REPLACE "^(.*\n)?Revision: ([^\n]+).*"
"\\2" ${prefix}_WC_REVISION "${${prefix}_WC_INFO}")
string(REGEX REPLACE "^(.*\n)?Repository Root: ([^\n]+).*"
"\\2" ${prefix}_WC_ROOT "${${prefix}_WC_INFO}")
string(REGEX REPLACE "^(.*\n)?Last Changed Author: ([^\n]+).*"
"\\2" ${prefix}_WC_LAST_CHANGED_AUTHOR "${${prefix}_WC_INFO}")
string(REGEX REPLACE "^(.*\n)?Last Changed Rev: ([^\n]+).*"
"\\2" ${prefix}_WC_LAST_CHANGED_REV "${${prefix}_WC_INFO}")
string(REGEX REPLACE "^(.*\n)?Last Changed Date: ([^\n]+).*"
"\\2" ${prefix}_WC_LAST_CHANGED_DATE "${${prefix}_WC_INFO}")
endif(${git_svn_info_result} EQUAL 0)
endif(NOT "${git_config_output}" STREQUAL "")
# If there is no 'remote.origin', default to "NA" value and print a warning message.
if(NOT ${prefix}_WC_URL)
message(WARNING "No remote origin set for git repository: ${dir}" )
set( ${prefix}_WC_URL "NA" )
else()
set(${prefix}_WC_ROOT ${${prefix}_WC_URL})
endif()
endmacro(GIT_WC_INFO)
endif(GIT_EXECUTABLE)
# Handle the QUIETLY and REQUIRED arguments and set GIT_FOUND to TRUE if
# all listed variables are TRUE
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Git DEFAULT_MSG GIT_EXECUTABLE)
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