87 lines
2.6 KiB
Python
87 lines
2.6 KiB
Python
"""
|
|
Copyright 2020 Oliver Smith
|
|
|
|
This file is part of pmbootstrap.
|
|
|
|
pmbootstrap is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
pmbootstrap is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with pmbootstrap. If not, see <http://www.gnu.org/licenses/>.
|
|
"""
|
|
|
|
import os
|
|
import time
|
|
import pmb.helpers.run
|
|
|
|
|
|
def replace(path, old, new):
|
|
text = ""
|
|
with open(path, "r", encoding="utf-8") as handle:
|
|
text = handle.read()
|
|
|
|
text = text.replace(old, new)
|
|
|
|
with open(path, "w", encoding="utf-8") as handle:
|
|
handle.write(text)
|
|
|
|
|
|
def is_up_to_date(path_sources, path_target=None, lastmod_target=None):
|
|
"""
|
|
Check if a file is up-to-date by comparing the last modified timestamps
|
|
(just like make does it).
|
|
|
|
:param path_sources: list of full paths to the source files
|
|
:param path_target: full path to the target file
|
|
:param lastmod_target: the timestamp of the target file. specify this as
|
|
alternative to specifying path_target.
|
|
"""
|
|
|
|
if path_target and lastmod_target:
|
|
raise RuntimeError(
|
|
"Specify path_target *or* lastmod_target, not both!")
|
|
|
|
lastmod_source = None
|
|
for path_source in path_sources:
|
|
lastmod = os.path.getmtime(path_source)
|
|
if not lastmod_source or lastmod > lastmod_source:
|
|
lastmod_source = lastmod
|
|
|
|
if path_target:
|
|
lastmod_target = os.path.getmtime(path_target)
|
|
|
|
return lastmod_target >= lastmod_source
|
|
|
|
|
|
def is_older_than(path, seconds):
|
|
"""
|
|
Check if a single file is older than a given amount of seconds.
|
|
"""
|
|
if not os.path.exists(path):
|
|
return True
|
|
lastmod = os.path.getmtime(path)
|
|
return lastmod + seconds < time.time()
|
|
|
|
|
|
def symlink(args, file, link):
|
|
"""
|
|
Checks if the symlink is already present, otherwise create it.
|
|
"""
|
|
if os.path.exists(link):
|
|
if (os.path.islink(link) and
|
|
os.path.realpath(os.readlink(link)) == os.path.realpath(file)):
|
|
return
|
|
raise RuntimeError("File exists: " + link)
|
|
elif os.path.islink(link):
|
|
os.unlink(link)
|
|
|
|
# Create the symlink
|
|
pmb.helpers.run.user(args, ["ln", "-s", file, link])
|