98 lines
3 KiB
CMake
98 lines
3 KiB
CMake
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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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#[=======================================================================[.rst:
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FindHg
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------
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Extract information from a mercurial working copy.
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The module defines the following variables:
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::
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HG_EXECUTABLE - path to mercurial command line client (hg)
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HG_FOUND - true if the command line client was found
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HG_VERSION_STRING - the version of mercurial found
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If the command line client executable is found the following macro is defined:
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::
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HG_WC_INFO(<dir> <var-prefix>)
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Hg_WC_INFO extracts information of a mercurial working copy
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at a given location. This macro defines the following variables:
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::
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<var-prefix>_WC_CHANGESET - current changeset
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<var-prefix>_WC_REVISION - current revision
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Example usage:
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::
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find_package(Hg)
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if(HG_FOUND)
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message("hg found: ${HG_EXECUTABLE}")
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HG_WC_INFO(${PROJECT_SOURCE_DIR} Project)
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message("Current revision is ${Project_WC_REVISION}")
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message("Current changeset is ${Project_WC_CHANGESET}")
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endif()
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#]=======================================================================]
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find_program(HG_EXECUTABLE
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NAMES hg
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PATHS
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[HKEY_LOCAL_MACHINE\\Software\\TortoiseHG]
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PATH_SUFFIXES Mercurial
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DOC "hg command line client"
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)
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mark_as_advanced(HG_EXECUTABLE)
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if(HG_EXECUTABLE)
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set(_saved_lc_all "$ENV{LC_ALL}")
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set(ENV{LC_ALL} "C")
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set(_saved_language "$ENV{LANGUAGE}")
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set(ENV{LANGUAGE})
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execute_process(COMMAND ${HG_EXECUTABLE} --version
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OUTPUT_VARIABLE hg_version
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ERROR_QUIET
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RESULT_VARIABLE hg_result
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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set(ENV{LC_ALL} ${_saved_lc_all})
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set(ENV{LANGUAGE} ${_saved_language})
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if(hg_result MATCHES "is not a valid Win32 application")
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set_property(CACHE HG_EXECUTABLE PROPERTY VALUE "HG_EXECUTABLE-NOTFOUND")
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endif()
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if(hg_version MATCHES "^Mercurial Distributed SCM \\(version ([0-9][^)]*)\\)")
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set(HG_VERSION_STRING "${CMAKE_MATCH_1}")
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endif()
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unset(hg_version)
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macro(HG_WC_INFO dir prefix)
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execute_process(COMMAND ${HG_EXECUTABLE} id -i -n
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WORKING_DIRECTORY ${dir}
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RESULT_VARIABLE hg_id_result
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ERROR_VARIABLE hg_id_error
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OUTPUT_VARIABLE ${prefix}_WC_DATA
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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if(NOT ${hg_id_result} EQUAL 0)
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message(SEND_ERROR "Command \"${HG_EXECUTBALE} id -n\" in directory ${dir} failed with output:\n${hg_id_error}")
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endif()
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string(REGEX REPLACE "([0-9a-f]+)\\+? [0-9]+\\+?" "\\1" ${prefix}_WC_CHANGESET ${${prefix}_WC_DATA})
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string(REGEX REPLACE "[0-9a-f]+\\+? ([0-9]+)\\+?" "\\1" ${prefix}_WC_REVISION ${${prefix}_WC_DATA})
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endmacro(HG_WC_INFO)
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endif()
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include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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find_package_handle_standard_args(Hg
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REQUIRED_VARS HG_EXECUTABLE
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VERSION_VAR HG_VERSION_STRING)
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