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75 lines
2.1 KiB
75 lines
2.1 KiB
10 years ago
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#
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# wpylib.file.tmpdir module
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# Utility for creating a script-wide temporary directory.
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#
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# Wirawan Purwanto
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# Created: 20140802
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#
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"""
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wpylib.file.tmpdir
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Utility for creating a script-wide temporary directory.
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This module is part of wpylib project.
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The temporary directory (tempdir) is created only once when
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the main function, tmpdir(), is called.
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This tempdir is supposed to be used as the root directory
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for all other temporary files throughout the lifetime of the script.
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When this script exists, the tempdir will be deleted with all
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the files/subdirs therein with a forced `rm -rf' invocation.
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The tmpdir routine has a fairly standard set of sequence of root dir
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candidates.
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User-defined roots can also be added (taking precedence over standard set)
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via TMPDIR_ROOTS list.
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But this must be added before the first tmpdir() function call.
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"""
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import os
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import os.path
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import tempfile
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from warnings import warn
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from wpylib import shell_utils as sh
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_g = globals()
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_g.setdefault("TMPDIR", None)
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_g.setdefault("TMPDIR_CLEANUP", True)
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_g.setdefault("TMPDIR_ROOTS", [])
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del _g
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def tmpdir():
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"""Main function to create a temporary directory (when first called)
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and return the created temporary directory name.
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For subsequent calls, the same temporary directory name is given again.
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"""
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import atexit
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global TMPDIR, TMPDIR_ROOTS
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if TMPDIR != None: return TMPDIR
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tmproot = None
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# FIXME: site-specific hooks probably need to be set somewhere
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for d in list(TMPDIR_ROOTS) + [ os.getenv("TMP"), os.getenv("TMPDIR"), "/tmp", "/var/tmp" ]:
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if d != None and os.path.isdir(d) and :
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tmproot = d
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break
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if not tmproot:
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warn("Cannot find suitable temporary directory root, using current directory.",
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RuntimeWarning)
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tmproot = os.getcwd()
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TMPDIR = tempfile.mkdtemp(prefix=("%s/chkgit-%d" % (tmproot, os.getpid())))
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def tmpdir_exitfunc():
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global TMPDIR
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global TMPDIR_CLEANUP
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if TMPDIR != None and os.path.isdir(TMPDIR) and TMPDIR_CLEANUP:
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try:
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sh.rm("-rf", TMPDIR)
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except:
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warn("Failed to remove temporary directory %s" % TMPDIR)
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atexit.register(tmpdir_exitfunc)
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return TMPDIR
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