author | Bryan O'Sullivan <bos@serpentine.com> |
Thu, 09 Aug 2007 17:29:16 -0700 | |
changeset 5137 | 67afecb8d6cc |
parent 5135 | bf60e4bd6672 |
child 5143 | fc6106267198 |
permissions | -rwxr-xr-x |
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#!/usr/bin/env python |
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"""Test the running system for features availability. Exit with zero |
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if all features are there, non-zero otherwise. If a feature name is |
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prefixed with "no-", the absence of feature is tested. |
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""" |
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import optparse |
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import os |
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import sys |
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import tempfile |
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|
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tempprefix = 'hg-hghave-' |
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def has_symlink(): |
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return hasattr(os, "symlink") |
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def has_fifo(): |
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return hasattr(os, "mkfifo") |
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def has_executablebit(): |
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fd, path = tempfile.mkstemp(prefix=tempprefix) |
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os.close(fd) |
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try: |
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s = os.lstat(path).st_mode |
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os.chmod(path, s | 0100) |
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return (os.lstat(path).st_mode & 0100 != 0) |
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finally: |
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os.remove(path) |
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def has_eol_in_paths(): |
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try: |
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fd, path = tempfile.mkstemp(prefix=tempprefix, suffix='\n\r') |
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os.close(fd) |
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os.remove(path) |
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return True |
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except: |
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return False |
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checks = { |
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"symlink": (has_symlink, "symbolic links"), |
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"fifo": (has_fifo, "named pipes"), |
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"execbit": (has_executablebit, "executable bit"), |
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"eol-in-paths": (has_eol_in_paths, "end-of-lines in paths"), |
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} |
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def list_features(): |
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for name, feature in checks.iteritems(): |
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desc = feature[1] |
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print name + ':', desc |
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parser = optparse.OptionParser("%prog [options] [features]") |
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parser.add_option("--list-features", action="store_true", |
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help="list available features") |
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parser.add_option("-q", "--quiet", action="store_true", |
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help="check features silently") |
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if __name__ == '__main__': |
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options, args = parser.parse_args() |
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if options.list_features: |
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list_features() |
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sys.exit(0) |
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quiet = options.quiet |
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failures = 0 |
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def error(msg): |
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global failures |
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if not quiet: |
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sys.stderr.write(msg + '\n') |
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failures += 1 |
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for feature in args: |
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negate = feature.startswith('no-') |
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if negate: |
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feature = feature[3:] |
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if feature not in checks: |
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error('hghave: unknown feature: ' + feature) |
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continue |
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check, desc = checks[feature] |
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if not negate and not check(): |
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error('hghave: missing feature: ' + desc) |
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elif negate and check(): |
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error('hghave: unexpected feature: ' + desc) |
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if failures != 0: |
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sys.exit(1) |
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