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#!/usr/bin/env python
from optparse import OptionParser
import os
import re
import sys
import subprocess
tarball_url="http://gnuradio.org/releases/gnuradio/gr-howto-write-a-block-3.3git-651-g642252d8.tar.gz"
def open_tarball(tarball_name=None):
"""Return a readable fileobject that references the tarball.
If tarball_name is None, download from the net
"""
if tarball_name:
return open(tarball_name, 'r')
p = subprocess.Popen(["wget", "-O", "-", tarball_url],
close_fds=True, stdout=subprocess.PIPE)
return p.stdout
def extract_and_rename_files(tarball, module_name):
# Requires GNU tar.
tar_cmd = 'tar xz --strip-components=1 --transform="s/howto/%s/g"' % (module_name,)
p = subprocess.Popen(tar_cmd, shell=True, stdin=tarball, close_fds=True)
sts = os.waitpid(p.pid, 0)
return sts == 0
def main():
usage = "%prog: [options] new_module_name"
description="Create a prototype 'out of tree' GNU Radio project"
parser = OptionParser(usage=usage, description=description)
parser.add_option("-T", "--tarball", type="string", default=None,
help="path to gr-howto-build-a-block gzipped tarball [default=<get from web>]")
(options, args) = parser.parse_args()
if len(args) != 1:
parser.print_help()
raise SystemExit,2
module_name = args[0]
if not re.match(r'[_a-z][_a-z0-9]*$', module_name):
sys.stderr.write("module_name '%s' may only contain [a-z0-9_]\n" % (module_name))
raise SystemExit, 1
# Ensure there's no file or directory called <module_name>
if os.path.exists(module_name):
sys.stderr.write("A file or directory named '%s' already exists\n" % (module_name,))
raise SystemExit, 1
os.mkdir(module_name)
os.chdir(module_name)
ok = extract_and_rename_files(open_tarball(options.tarball), module_name)
# rename file contents
upper_module_name = module_name.upper()
sed_cmd = 'sed -i -e "s/howto/%s/g" -e "s/HOWTO/%s/g"' % (module_name,
upper_module_name)
os.system('find . -type f -print0 | xargs -0 ' + sed_cmd)
sys.stdout.write("""
Project '%s' is now ready to build.
$ ./bootstrap
$ ./configure --prefix=/home/[user]/install
$ (make && make check && make install) 2>&1 | tee make.log
""" % (module_name,))
if __name__ == '__main__':
main()
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