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FindHg: Add Hg_WC_INFO macro

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Add a macro to extract information from a Hg work tree much like the
Subversion_WC_INFO macro does for Subversion work tree.
This commit is contained in:
Matthäus G. Chajdas 2014-02-22 19:46:48 +01:00 committed by Brad King
parent 8993df6c3d
commit bcefbe737d
1 changed files with 34 additions and 1 deletions
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35
Modules/FindHg.cmake
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@ -2,7 +2,7 @@
# FindHg
# ------
#
#
# Extract information from a mercurial working copy.
#
# The module defines the following variables:
#
@ -12,6 +12,20 @@
# 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:
#
# ::
@ -19,11 +33,15 @@
# 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 ${Project_WC_CHANGESET}")
# endif()
#=============================================================================
# Copyright 2010-2012 Kitware, Inc.
# Copyright 2012 Rolf Eike Beer <eike@sf-mail.de>
# Copyright 2014 Matthaeus G. Chajdas
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
@ -53,6 +71,21 @@ if(HG_EXECUTABLE)
set(HG_VERSION_STRING "${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