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Diffstat (limited to 'Modules/FindHg.cmake')
| -rw-r--r-- | Modules/FindHg.cmake | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/Modules/FindHg.cmake b/Modules/FindHg.cmake new file mode 100644 index 0000000..bdbb79b --- /dev/null +++ b/Modules/FindHg.cmake @@ -0,0 +1,110 @@ +#.rst: +# FindHg +# ------ +# +# Extract information from a mercurial working copy. +# +# The module defines the following variables: +# +# :: +# +# HG_EXECUTABLE - path to mercurial command line client (hg) +# HG_FOUND - true if the command line client was found +# HG_VERSION_STRING - the version of mercurial found +# +# If the command line client executable is found the following macro is defined: +# +# :: +# +# HG_WC_INFO(<dir> <var-prefix>) +# +# Hg_WC_INFO extracts information of a mercurial working copy +# at a given location. This macro defines the following variables: +# +# :: +# +# <var-prefix>_WC_CHANGESET - current changeset +# <var-prefix>_WC_REVISION - current revision +# +# Example usage: +# +# :: +# +# find_package(Hg) +# if(HG_FOUND) +# message("hg found: ${HG_EXECUTABLE}") +# HG_WC_INFO(${PROJECT_SOURCE_DIR} Project) +# message("Current revision is ${Project_WC_REVISION}") +# message("Current changeset is ${Project_WC_CHANGESET}") +# endif() + +#============================================================================= +# Copyright 2010-2012 Kitware, Inc. +# Copyright 2012 Rolf Eike Beer <eike@sf-mail.de> +# Copyright 2014 Matthaeus G. Chajdas +# +# Distributed under the OSI-approved BSD License (the "License"); +# see accompanying file Copyright.txt for details. +# +# This software is distributed WITHOUT ANY WARRANTY; without even the +# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. +# See the License for more information. +#============================================================================= +# (To distribute this file outside of CMake, substitute the full +# License text for the above reference.) + +find_program(HG_EXECUTABLE + NAMES hg + PATHS + [HKEY_LOCAL_MACHINE\\Software\\TortoiseHG] + PATH_SUFFIXES Mercurial + DOC "hg command line client" + ) +mark_as_advanced(HG_EXECUTABLE) + +if(HG_EXECUTABLE) + set(_saved_lc_all "$ENV{LC_ALL}") + set(ENV{LC_ALL} "C") + + set(_saved_language "$ENV{LANGUAGE}") + set(ENV{LANGUAGE}) + + execute_process(COMMAND ${HG_EXECUTABLE} --version + OUTPUT_VARIABLE hg_version + ERROR_QUIET + RESULT_VARIABLE hg_result + OUTPUT_STRIP_TRAILING_WHITESPACE) + + set(ENV{LC_ALL} ${_saved_lc_all}) + set(ENV{LANGUAGE} ${_saved_language}) + + if(hg_result MATCHES "is not a valid Win32 application") + set_property(CACHE HG_EXECUTABLE PROPERTY VALUE "HG_EXECUTABLE-NOTFOUND") + endif() + if(hg_version MATCHES "^Mercurial Distributed SCM \\(version ([0-9][^)]*)\\)") + set(HG_VERSION_STRING "${CMAKE_MATCH_1}") + endif() + unset(hg_version) + + macro(HG_WC_INFO dir prefix) + execute_process(COMMAND ${HG_EXECUTABLE} id -i -n + WORKING_DIRECTORY ${dir} + RESULT_VARIABLE hg_id_result + ERROR_VARIABLE hg_id_error + OUTPUT_VARIABLE ${prefix}_WC_DATA + OUTPUT_STRIP_TRAILING_WHITESPACE) + if(NOT ${hg_id_result} EQUAL 0) + message(SEND_ERROR "Command \"${HG_EXECUTBALE} id -n\" in directory ${dir} failed with output:\n${hg_id_error}") + endif() + + string(REGEX REPLACE "([0-9a-f]+)\\+? [0-9]+\\+?" "\\1" ${prefix}_WC_CHANGESET ${${prefix}_WC_DATA}) + string(REGEX REPLACE "[0-9a-f]+\\+? ([0-9]+)\\+?" "\\1" ${prefix}_WC_REVISION ${${prefix}_WC_DATA}) + endmacro(HG_WC_INFO) +endif() + +# Handle the QUIETLY and REQUIRED arguments and set HG_FOUND to TRUE if +# all listed variables are TRUE +include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake) +find_package_handle_standard_args(Hg + REQUIRED_VARS HG_EXECUTABLE + VERSION_VAR HG_VERSION_STRING) |