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102 lines
4.0 KiB
Python
102 lines
4.0 KiB
Python
"""pyversioncheck - Module to help with checking versions"""
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import types
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import rfc822
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import urllib
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import sys
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import string
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# Verbose options
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VERBOSE_SILENT=0 # Single-line reports per package
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VERBOSE_NORMAL=1 # Single-line reports per package, more info if outdated
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VERBOSE_EACHFILE=2 # Report on each URL checked
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VERBOSE_CHECKALL=3 # Check each URL for each package
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# Test directory
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## urllib bug: _TESTDIR="ftp://ftp.cwi.nl/pub/jack/python/versiontestdir/"
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_TESTDIR="http://www.cwi.nl/~jack/versiontestdir/"
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def versioncheck(package, url, version, verbose=0):
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ok, newversion, fp = checkonly(package, url, version, verbose)
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if verbose > VERBOSE_NORMAL:
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return ok
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if ok < 0:
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print '%s: No correctly formatted current version file found'%(package)
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elif ok == 1:
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print '%s: up-to-date (version %s)'%(package, version)
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else:
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print '%s: version %s installed, version %s found:' % \
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(package, version, newversion)
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if verbose > VERBOSE_SILENT:
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while 1:
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line = fp.readline()
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if not line: break
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sys.stdout.write('\t'+line)
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return ok
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def checkonly(package, url, version, verbose=0):
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if verbose >= VERBOSE_EACHFILE:
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print '%s:'%package
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if type(url) == types.StringType:
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ok, newversion, fp = _check1version(package, url, version, verbose)
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else:
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for u in url:
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ok, newversion, fp = _check1version(package, u, version, verbose)
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if ok >= 0 and verbose < VERBOSE_CHECKALL:
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break
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return ok, newversion, fp
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def _check1version(package, url, version, verbose=0):
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if verbose >= VERBOSE_EACHFILE:
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print ' Checking %s'%url
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try:
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fp = urllib.urlopen(url)
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except IOError, arg:
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if verbose >= VERBOSE_EACHFILE:
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print ' Cannot open:', arg
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return -1, None, None
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msg = rfc822.Message(fp, seekable=0)
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newversion = msg.getheader('current-version')
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if not newversion:
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if verbose >= VERBOSE_EACHFILE:
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print ' No "Current-Version:" header in URL or URL not found'
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return -1, None, None
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version = string.strip(string.lower(version))
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newversion = string.strip(string.lower(newversion))
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if version == newversion:
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if verbose >= VERBOSE_EACHFILE:
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print ' Version identical (%s)'%newversion
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return 1, version, fp
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else:
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if verbose >= VERBOSE_EACHFILE:
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print ' Versions different (installed: %s, new: %s)'% \
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(version, newversion)
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return 0, newversion, fp
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def _test():
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print '--- TEST VERBOSE=1'
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print '--- Testing existing and identical version file'
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versioncheck('VersionTestPackage', _TESTDIR+'Version10.txt', '1.0', verbose=1)
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print '--- Testing existing package with new version'
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versioncheck('VersionTestPackage', _TESTDIR+'Version11.txt', '1.0', verbose=1)
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print '--- Testing package with non-existing version file'
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versioncheck('VersionTestPackage', _TESTDIR+'nonexistent.txt', '1.0', verbose=1)
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print '--- Test package with 2 locations, first non-existing second ok'
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versfiles = [_TESTDIR+'nonexistent.txt', _TESTDIR+'Version10.txt']
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versioncheck('VersionTestPackage', versfiles, '1.0', verbose=1)
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print '--- TEST VERBOSE=2'
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print '--- Testing existing and identical version file'
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versioncheck('VersionTestPackage', _TESTDIR+'Version10.txt', '1.0', verbose=2)
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print '--- Testing existing package with new version'
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versioncheck('VersionTestPackage', _TESTDIR+'Version11.txt', '1.0', verbose=2)
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print '--- Testing package with non-existing version file'
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versioncheck('VersionTestPackage', _TESTDIR+'nonexistent.txt', '1.0', verbose=2)
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print '--- Test package with 2 locations, first non-existing second ok'
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versfiles = [_TESTDIR+'nonexistent.txt', _TESTDIR+'Version10.txt']
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versioncheck('VersionTestPackage', versfiles, '1.0', verbose=2)
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if __name__ == '__main__':
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_test()
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