1# - Extract information from a subversion working copy
2# The module defines the following variables:
3#  Subversion_SVN_EXECUTABLE - path to svn command line client
4#  Subversion_VERSION_SVN - version of svn command line client
5#  Subversion_FOUND - true if the command line client was found
6# If the command line client executable is found the macro
7#  Subversion_WC_INFO(<dir> <var-prefix>)
8# is defined to extract information of a subversion working copy at
9# a given location. The macro defines the following variables:
10#  <var-prefix>_WC_URL - url of the repository (at <dir>)
11#  <var-prefix>_WC_ROOT - root url of the repository
12#  <var-prefix>_WC_REVISION - current revision
13#  <var-prefix>_WC_LAST_CHANGED_AUTHOR - author of last commit
14#  <var-prefix>_WC_LAST_CHANGED_DATE - date of last commit
15#  <var-prefix>_WC_LAST_CHANGED_REV - revision of last commit
16#  <var-prefix>_WC_LAST_CHANGED_LOG - last log of base revision
17#  <var-prefix>_WC_INFO - output of command `svn info <dir>'
18# Example usage:
19#  FIND_PACKAGE(Subversion)
20#  IF(Subversion_FOUND)
21#    Subversion_WC_INFO(${PROJECT_SOURCE_DIR} Project)
22#    MESSAGE("Current revision is ${Project_WC_REVISION}")
23#  ENDIF(Subversion_FOUND)
24
25# Copyright (c) 2006, Tristan Carel
26# All rights reserved.
27# Redistribution and use in source and binary forms, with or without
28# modification, are permitted provided that the following conditions are met:
29#
30#     * Redistributions of source code must retain the above copyright
31#       notice, this list of conditions and the following disclaimer.
32#     * Redistributions in binary form must reproduce the above copyright
33#       notice, this list of conditions and the following disclaimer in the
34#       documentation and/or other materials provided with the distribution.
35#     * Neither the name of the University of California, Berkeley nor the
36#       names of its contributors may be used to endorse or promote products
37#       derived from this software without specific prior written permission.
38#
39# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
40# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
41# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
42# DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
43# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
44# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
45# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
46# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
47# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
48# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
49
50# $Id: FindSubversion.cmake,v 1.1.2.1 2006/11/13 17:59:54 hoffman Exp $
51
52SET(Subversion_FOUND FALSE)
53SET(Subversion_SVN_FOUND FALSE)
54
55FIND_PROGRAM(Subversion_SVN_EXECUTABLE svn
56  DOC "subversion command line client")
57MARK_AS_ADVANCED(Subversion_SVN_EXECUTABLE)
58
59IF(Subversion_SVN_EXECUTABLE)
60  SET(Subversion_SVN_FOUND TRUE)
61  SET(Subversion_FOUND TRUE)
62
63  MACRO(Subversion_WC_INFO dir prefix)
64    EXECUTE_PROCESS(COMMAND ${Subversion_SVN_EXECUTABLE} --version
65      WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
66      OUTPUT_VARIABLE Subversion_VERSION_SVN
67      OUTPUT_STRIP_TRAILING_WHITESPACE)
68    MESSAGE(STATUS "Getting svn version from ${dir}")
69
70    EXECUTE_PROCESS(COMMAND ${Subversion_SVN_EXECUTABLE} info --xml .
71      WORKING_DIRECTORY ${dir}
72      OUTPUT_VARIABLE ${prefix}_WC_INFO
73      ERROR_VARIABLE Subversion_svn_info_error
74      RESULT_VARIABLE Subversion_svn_info_result
75      OUTPUT_STRIP_TRAILING_WHITESPACE)
76
77    IF(NOT ${Subversion_svn_info_result} EQUAL 0)
78      MESSAGE(SEND_ERROR "Command \"${Subversion_SVN_EXECUTABLE} info ${dir}\" failed with output:\n${Subversion_svn_info_error}")
79    ELSE(NOT ${Subversion_svn_info_result} EQUAL 0)
80      STRING(REPLACE "\n" "" ${prefix}_WC_INFO "${${prefix}_WC_INFO}")
81      STRING(REGEX REPLACE "^(.*\n)?svn, version ([.0-9]+).*" "\\2" Subversion_VERSION_SVN "${Subversion_VERSION_SVN}")
82      STRING(REGEX REPLACE ".*<url>([^<]+)</url>.*" "\\1" ${prefix}_WC_URL "${${prefix}_WC_INFO}")
83      STRING(REGEX REPLACE ".*<entry[^>]+revision=\"([0-9]+)\">.*" "\\1" ${prefix}_WC_REVISION "${${prefix}_WC_INFO}")
84      STRING(REGEX REPLACE ".*<author>([^<]+)</author>.*" "\\1" ${prefix}_WC_LAST_CHANGED_AUTHOR "${${prefix}_WC_INFO}")
85      STRING(REGEX REPLACE ".*<commit +revision=\"([0-9]+)\".*" "\\1" ${prefix}_WC_LAST_CHANGED_REV "${${prefix}_WC_INFO}")
86      STRING(REGEX REPLACE ".*<date>([^<]+)</date>.*" "\\1" ${prefix}_WC_LAST_CHANGED_DATE "${${prefix}_WC_INFO}")
87    ENDIF(NOT ${Subversion_svn_info_result} EQUAL 0)
88
89    EXECUTE_PROCESS(COMMAND
90      ${Subversion_SVN_EXECUTABLE} log -r BASE ${dir}
91      WORKING_DIRECTORY ${dir}
92      OUTPUT_VARIABLE Subversion_LAST_CHANGED_LOG
93      ERROR_VARIABLE Subversion_svn_log_error
94      RESULT_VARIABLE Subversion_svn_log_result
95      OUTPUT_STRIP_TRAILING_WHITESPACE)
96
97    IF(NOT ${Subversion_svn_log_result} EQUAL 0)
98      MESSAGE(SEND_ERROR "Command \"${Subversion_SVN_EXECUTABLE} log -r BASE ${dir}\" failed with output:\n${Subversion_svn_log_error}")
99    ENDIF(NOT ${Subversion_svn_log_result} EQUAL 0)
100  ENDMACRO(Subversion_WC_INFO)
101
102ENDIF(Subversion_SVN_EXECUTABLE)
103
104IF(NOT Subversion_FOUND)
105  IF(NOT Subversion_FIND_QUIETLY)
106    MESSAGE(STATUS "Subversion was not found.")
107  ELSE(NOT Subversion_FIND_QUIETLY)
108    IF(Subversion_FIND_REQUIRED)
109      MESSAGE(FATAL_ERROR "Subversion was not found.")
110    ENDIF(Subversion_FIND_REQUIRED)
111  ENDIF(NOT Subversion_FIND_QUIETLY)
112ENDIF(NOT Subversion_FOUND)
113
114# FindSubversion.cmake ends here.
115