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# Copyright 2006-2011 The FLWOR Foundation.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# 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.
# Script to download external modules for Zorba.
# Usage: cmake [ -Dopt=value ...] -P DownloadModules.cmake
# Be sure all -D options come before -P !
# Valid options:
# modname = short module name (see modules/ExternalModules.conf);
# may be a semicolon-separated list
# allmodules = if true: download all known modules
# outdir = full path to Zorba's external modules directory to download
# modules into (will be created if necessary)
# notags = if true: ignore tags, check out HEAD revision of module(s)
# (bzr only - svn uses different URLs for tags)
# Figure out what directory we're running in - ExternalModules.txt is here too
get_filename_component (cwd ${CMAKE_CURRENT_LIST_FILE} PATH)
# Find SVN
FIND_PROGRAM(svn svn DOC "subversion command line client")
# Find BZR
FIND_PROGRAM(bzr bzr DOC "bazaar command line client")
# Check parameters
if (NOT outdir)
message (FATAL_ERROR "Please pass -Doutdir.")
endif (NOT outdir)
if (NOT IS_DIRECTORY "${outdir}")
file (MAKE_DIRECTORY "${outdir}")
endif (NOT IS_DIRECTORY "${outdir}")
if (NOT modname AND NOT allmodules)
message (FATAL_ERROR "Please specify either -Dmodname=<name> or -Dallmodules=1")
endif (NOT modname AND NOT allmodules)
# Load ExternalModules.conf
file (STRINGS "${cwd}/ExternalModules.conf" modlines REGEX "^[^#]")
# Iterate through each line
foreach (modline ${modlines})
string (STRIP "${modline}" modline)
if (modline)
separate_arguments (_modargs UNIX_COMMAND "${modline}")
list (GET _modargs 0 _modname)
list (GET _modargs 1 _modvc)
list (GET _modargs 2 _modurl)
set (_modtag)
list (LENGTH _modargs _modargslen)
if (_modargslen GREATER 3)
list (GET _modargs 3 _modtag)
endif (_modargslen GREATER 3)
# See if this is a module short-name we care about
set (_getmod)
if (allmodules)
set (_getmod 1)
else (allmodules)
list (FIND modname ${_modname} _modfound)
if (NOT ${_modfound} EQUAL -1)
set (_getmod 1)
endif (NOT ${_modfound} EQUAL -1)
endif (allmodules)
# Download
if ("${_getmod}" EQUAL 1)
message ("Downloading module '${_modname}'...")
# We try three times, to account for network weirdnesses
foreach (i 1 2 3)
# First delete the output directory, in case there's a partial
# download from a previous attempt
file (REMOVE_RECURSE "${outdir}/${_modname}")
set (_status)
if (${_modvc} STREQUAL "svn")
if (NOT svn)
message (FATAL_ERROR
"Subversion client not found - required for ${_modname} module!")
endif (NOT svn)
execute_process (COMMAND "${svn}" checkout "${_modurl}" "${_modname}"
WORKING_DIRECTORY "${outdir}" TIMEOUT 60 RESULT_VARIABLE _status)
elseif (${_modvc} STREQUAL "bzr")
if (NOT bzr)
message (FATAL_ERROR
"Bazaar client not found - required for ${_modname} module!")
endif (NOT bzr)
set (_modtagargs)
if (_modtag AND NOT notags)
set (_modtagargs "-r" "${_modtag}")
endif (_modtag AND NOT notags)
execute_process (COMMAND "${bzr}" branch "${_modurl}" "${_modname}"
${_modtagargs} WORKING_DIRECTORY "${outdir}" TIMEOUT 60
RESULT_VARIABLE _status)
else (${_modvc} STREQUAL "svn")
message (FATAL_ERROR "Unknown vc-type '${_modvc}' for module "
"'${_modname}' in modules/ExternalModules.conf!")
endif (${_modvc} STREQUAL "svn")
if ("${_status}" EQUAL 0)
# Success
break ()
else ("${_status}" EQUAL 0)
message (WARNING "Attempt ${i}: Failed to download '${_modname}' (${_status})")
endif ("${_status}" EQUAL 0)
endforeach (i)
# Ensure we successfully downloaded something good
if (NOT EXISTS "${outdir}/${_modname}/CMakeLists.txt")
message (FATAL_ERROR "Failed to download '${_modname}' after 3 attempts, giving up.")
endif (NOT EXISTS "${outdir}/${_modname}/CMakeLists.txt")
endif ("${_getmod}" EQUAL 1)
endif (modline)
endforeach (modline)
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