speed_up_sed_by_using_py.sh

#!/bin/bash

set -euo pipefail
# readonly SCRIPT_DIR="$(dirname "$(readlink -f "${BASH_SOURCE[0]}")")"
SCRIPT_DIR="$(dirname "$(readlink -f "${BASH_SOURCE[0]}")")"

function process() {
python - << END_OF_PY_CODE

import os
import re
from multiprocessing import Pool

kerndir, kerntests, dsttestdirs = '$@'.split(' ')

def proc_fname(fname):
    txt = open(fname).read()
    txt = re.sub(r'/?' + kerndir + '/', 'kernel/', txt)
    txt = re.sub(r'/?' + kerntests + '/', dsttestdirs + '/', txt)
    txt = re.sub(r'\.\.\/[\.\/]+',
                 '../' * len(re.findall('/', fname.lstrip('./'))), txt)
    with open(fname, 'w+') as f:
        f.write(txt)

def fname_generator(root='.', ext='.html'):
    for dirpath, dirnames, filenames in os.walk(root):
        for h in filter(lambda f: f.endswith(ext), filenames):
            yield os.path.join(dirpath, h)

pool = Pool(12)
pool.map(proc_fname, fname_generator())
pool.close()
pool.join()

END_OF_PY_CODE
}

TOP="/path/to/my/kernel/src"

kerndir=${TOP#/}/kernel
kerntests=$(find ${TOP#/}/out -name "kernel_space_tests" -type d)
dsttestdirs="tests-kernel/linux/kernel_space_tests"

mkdir -p ${dsttestdirs}
echo ${kerndir}
echo ${kerntests}
rm -rf kernel ${dsttestdirs}
mv ${kerndir} kernel
mv ${kerntests} ${dsttestdirs}
process $kerndir $kerntests $dsttestdirs
# for f in $(find . -name "*.html" -printf "%P "); do
#     sed -i -e "s|[\/]\?${kerndir}/|kernel/|g" -e "s|[\/]\?${kerntests}/|${dsttestdirs}/|g" ${f}
#     if egrep -q "\.\.\/" ${f}; then
#            # fix level of related path ../ keep '/' only and translate it to '../'
#         lvl=${f//[^\/]}
#         relp=${lvl//\//\.\.\/}
#         sed -i "s|\.\.\/[\.\/]\+|${relp}|g" ${f}
#     fi
# done

rm -rf $(echo ${TOP#/} |cut -d'/' -f1)