increase portability by using python modules instead of subprocesses

# used to automate the steps described in the README file in this dir

from __future__ import print_function

import sys,os,re,subprocess,shutil

import sys,os,re,subprocess,shutil,tarfile

sys.path.append('..')

from install_helpers import fullpath,geturl,get_cpus,checkmd5sum

from argparse import ArgumentParser

version = args.version

homepath = fullpath(".")

scafacospath = "%s/scafacos-%s" % (homepath,version)

scafacospath = os.path.join(homepath,"scafacos-%s" % version)

if pathflag:

  scafacospath = args.path

  if not os.path.isdir("%s/include" % scafacospath):

  if not os.path.isdir(os.path.join(scafacospath,"include")):

    sys.exit("ScaFaCoS include path for %s does not exist" % scafacospath)

  if (not os.path.isdir("%s/lib64" % scafacospath)) \

     and (not os.path.isdir("%s/lib" % scafacospath)):

  if (not os.path.isdir(os.path.join(scafacospath,"lib64"))) \

     and (not os.path.isdir(os.path.join(scafacospath,"lib"))):

    sys.exit("ScaFaCoS lib path for %s does not exist" % scafacospath)

  scafacospath = fullpath(scafacospath)

  print("Unpacking ScaFaCoS tarball ...")

  if os.path.exists(scafacospath):

    shutil.rmtree(scafacospath)

  cmd = 'cd "%s"; tar -xzvf %s.tar.gz' % (homepath,scafacospath)

  subprocess.check_output(cmd,stderr=subprocess.STDOUT,shell=True)

  os.remove("%s.tar.gz" % scafacospath)

  tarname = os.path.join(homepath,"%s.tar.gz" % scafacospath)

  if tarfile.is_tarfile(tarname):

    tgz=tarfile.open(tarname)

    tgz.extractall(path=homepath)

    os.remove(tarname)

  else:

    sys.exit("File %s is not a supported archive" % tarname)

  # build ScaFaCoS

  print("Building ScaFaCoS ...")

  n_cpu = get_cpus()

  cmd = 'cd "%s"; ./configure --prefix="%s/build" --disable-doc --enable-fcs-solvers=fmm,p2nfft,direct,ewald,p3m --with-internal-fftw --with-internal-pfft --with-internal-pnfft CC=mpicc FC=mpif90 CXX=mpicxx F77=; make -j%d; make install' % (scafacospath,homepath,n_cpu)

  cmd = 'cd "%s"; ./configure --prefix="%s" --disable-doc --enable-fcs-solvers=fmm,p2nfft,direct,ewald,p3m --with-internal-fftw --with-internal-pfft --with-internal-pnfft CC=mpicc FC=mpif90 CXX=mpicxx F77=; make -j%d; make install' % (scafacospath,os.path.join(homepath,'build'),n_cpu)

  try:

    txt = subprocess.check_output(cmd,stderr=subprocess.STDOUT,shell=True)

    print(txt.decode('UTF-8'))

if os.path.isfile("liblink") or os.path.islink("liblink"):

  os.remove("liblink")

if buildflag:

  cmd = 'ln -s "%s/build/include" includelink' % homepath

  subprocess.check_output(cmd,stderr=subprocess.STDOUT,shell=True)

  cmd = 'ln -s "%s/build/lib" liblink' % homepath

  subprocess.check_output(cmd,stderr=subprocess.STDOUT,shell=True)

  os.symlink(os.path.join(homepath,'build','include'),'includelink')

  os.symlink(os.path.join(homepath,'build','lib'),'liblink')

else:

  cmd = 'ln -s "%s/include" includelink' % scafacospath

  subprocess.check_output(cmd,stderr=subprocess.STDOUT,shell=True)

  if os.path.isdir("%s/lib64" % scafacospath):

    cmd = 'ln -s "%s/lib64" liblink' % scafacospath

  os.symlink(os.path.join(scafacospath,'include'),'includelink')

  if os.path.isdir(os.path.join(scafacospath,"lib64")):

    os.symlink(os.path.join(scafacospath,'lib64'),'liblink')

  else:

    cmd = 'ln -s "%s/lib" liblink' % scafacospath

  subprocess.check_output(cmd,stderr=subprocess.STDOUT,shell=True)

    os.symlink(os.path.join(scafacospath,'lib'),'liblink')