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13 # The above copyright notice and this permission notice shall be included
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25 __revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
28 Verify that the SCons source code contains only correct handling of
29 keyboard interrupts (e.g. Ctrl-C).
40 test = TestSCons.TestSCons()
42 # We do not want statements of the form:
44 # # do something, e.g.
47 # # do the exception handling
51 # The code above may catch a KeyboardInterrupt exception, which was not
52 # intended by the programmer. We check for these situations in all python
56 cwd = os.environ['SCONS_CWD']
58 scons_lib_dir = os.environ['SCONS_LIB_DIR']
59 MANIFEST = os.path.join(scons_lib_dir, 'MANIFEST.in')
62 scons_lib_dir = os.path.join(cwd, 'build', 'scons')
63 MANIFEST = os.path.join(scons_lib_dir, 'MANIFEST')
68 test.skip_test('%s does not exist; skipping test.\n' % MANIFEST)
70 files = string.split(fp.read())
71 files = filter(lambda f: f[-3:] == '.py', files)
73 # some regexps to parse the python files
74 tryexc_pat = re.compile(
75 r'^(?P<try_or_except>(?P<indent> *)(try|except)( [^\n]*)?:.*)',re.MULTILINE)
76 keyboardint_pat = re.compile(r' *except +([^,],)*KeyboardInterrupt([ ,][^\n]*)?:[^\n]*')
77 exceptall_pat = re.compile(r' *except *:[^\n]*')
79 uncaughtKeyboardInterrupt = 0
81 contents = open(os.path.join(scons_lib_dir, f)).read()
85 match = tryexc_pat.search( contents, lastend )
91 indent_list = try_except_lines[match.group('indent')]
94 line_num = 1 + string.count(contents[:match.start()], '\n')
95 indent_list.append( (line_num, match.group('try_or_except') ) )
96 try_except_lines[match.group('indent')] = indent_list
97 for indent in try_except_lines.keys():
98 exc_keyboardint_seen = 0
100 for (l,statement) in try_except_lines[indent] + [(-1,indent + 'try')]:
101 #print "%4d %s" % (l,statement),
102 m1 = keyboardint_pat.match(statement)
103 m2 = exceptall_pat.match(statement)
104 if string.find(statement, indent + 'try') == 0:
105 if exc_all_seen and not exc_keyboardint_seen:
106 uncaughtKeyboardInterrupt = 1
107 print "File %s:%d: Uncaught KeyboardInterrupt!" % (f,line)
108 exc_keyboardint_seen = 0
113 exc_keyboardint_seen = 1
114 #print " -> keyboard -> ", m1.groups()
117 #print " -> all -> ", m2.groups()
120 #print "Warning: unknown statement %s" % statement
122 test.fail_test(uncaughtKeyboardInterrupt)