setup.m4

dnl setup.m4
dnl
dnl generate a .py file that has a setup() method that makes
dnl flumotion projects work with the base flumotion project

dnl FLUMOTION_SETUP(RELATIVE_PATH, FLUMOTION_DIR, PREAMBLE, NAME)

dnl RELATIVE_PATH: the relative path of the file to be generated,
dnl                relative to the root of the project
dnl FLUMOTION_DIR: Flumotion's installed location for code;
dnl                typically gotten from
dnl                pkg-config flumotion --variable=flumotiondir flumotion
dnl PREAMBLE:      the header to prepend before generated code
dnl PROJECT:       the name of the project


AC_DEFUN([FLUMOTION_SETUP], [
  AC_CONFIG_COMMANDS($1,
    [
# automake 2.60 help
if test "x$ac_file" != "x"; then dest=$ac_file; else dest=$ac_dest; fi
flu_var_prefix=`echo "$dest" | sed -e 's/[[^a-zA-Z_0-9]]/_/g'`
eval _RELATIVE_PATH=\$${flu_var_prefix}_RELATIVE_PATH
eval _PREAMBLE=\$${flu_var_prefix}_PREAMBLE
eval _FLUMOTION_DIR=\$${flu_var_prefix}_FLUMOTION_DIR
eval _PROJECT=\$${flu_var_prefix}_PROJECT

dirpart=`dirname "$_RELATIVE_PATH" 2> /dev/null`
mkdir -p $dirpart
cat > $_RELATIVE_PATH <<END
$_PREAMBLE

# This file has been generated by setup.m4 from configure.ac

RELATIVE_PATH = "$_RELATIVE_PATH"
FLU_DIR = "$_FLUMOTION_DIR"
PROJECT = "$_PROJECT"

import os
import sys

_setup = False


# we have a setup.setup() function so we don't import setup without doing
# anything to it


def setup():
    global _setup

    if _setup:
        return _setup

    # make sure we find the original flumotion dir always and firstly
    if not FLU_DIR in sys.path:
        sys.path.insert(0, FLU_DIR)

    # import flumotion and possibly add the original flumotion dir to __path__
    # and rebuild; without this trial seems to not be able to find
    # flumotion.common
    import flumotion
    if not FLU_DIR in flumotion.__path__:
        flumotion.__path__.insert(0, FLU_DIR)
        from twisted.python import rebuild
        rebuild.rebuild(flumotion)

    from flumotion.common import setup, log

    # enable logging
    setup.setup()

    # set up the package paths from FLU_PROJECT_PATH
    setup.setupPackagePath()

    # find out where we are so we can register the current project path
    log.debug('setup', 'RELATIVE_PATH: %s' % RELATIVE_PATH)
    levels = RELATIVE_PATH.count(os.path.sep)
    pplist = [['..']] * levels

    # now register our flumotion dir as an additional one
    # in the .m4, we wrap this in [] so aclocal does not expand __file__
    [__thisdir = os.path.dirname(os.path.abspath(__file__))]
    pplist.insert(0, __thisdir)

    # in distcheck mode, we need to go up one more
    if __thisdir.find('_build') != -1:
        log.debug('setup', 'distcheck mode (in %s)' % __thisdir)
        pplist.append('..')
    else:
        log.debug('setup', 'normal mode')

    __packagePath = os.path.abspath(os.path.join(*pplist))

    from flumotion.common import package
    log.debug('setup', 'registering our package path %s' % __packagePath)
    package.getPackager().registerPackagePath(__packagePath, PROJECT)

    _setup = __packagePath
    return _setup
END
],
    [  flu_var_prefix=`echo $1 | sed -e 's/[[^a-zA-Z_0-9]]/_/g'`
     eval \${flu_var_prefix}_RELATIVE_PATH=$1
    eval \${flu_var_prefix}_FLUMOTION_DIR=$2
    eval \${flu_var_prefix}_PREAMBLE=<<END
$3
END
    eval \${flu_var_prefix}_PROJECT=$4])
])