mirror of
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69 lines
1.6 KiB
Python
69 lines
1.6 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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import errno
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import os
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def mtime(path):
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try:
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return os.stat(path).st_mtime
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except OSError as e:
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if e.errno == errno.ENOENT:
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return -1
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raise
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def rebuild_check(args):
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target = args[0]
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deps = args[1:]
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t = mtime(target)
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if t < 0:
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print(target)
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return
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newer = []
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removed = []
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for dep in deps:
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deptime = mtime(dep)
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if deptime < 0:
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removed.append(dep)
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elif deptime > t:
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newer.append(dep)
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def format_filelist(filelist):
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if not filelist:
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return None
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limit = 5
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length = len(filelist)
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if length < limit:
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return ", ".join(filelist)
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truncated = filelist[:limit]
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remaining = length - limit
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return "%s (and %d other files)" % (", ".join(truncated), remaining)
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newer = format_filelist(newer)
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removed = format_filelist(removed)
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if newer and removed:
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print(
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"Rebuilding %s because %s changed and %s was removed"
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% (target, newer, removed)
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)
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elif newer:
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print("Rebuilding %s because %s changed" % (target, newer))
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elif removed:
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print("Rebuilding %s because %s was removed" % (target, removed))
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else:
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print("Rebuilding %s for an unknown reason" % target)
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if __name__ == "__main__":
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import sys
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rebuild_check(sys.argv[1:])
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