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diff --git a/data/coverage.py b/data/coverage.py
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-#!/usr/bin/python
-#
-#             Perforce Defect Tracking Integration Project
-#              <http://www.ravenbrook.com/project/p4dti/>
-#
-#                   COVERAGE.PY -- COVERAGE TESTING
-#
-#             Gareth Rees, Ravenbrook Limited, 2001-12-04
-#                     Ned Batchelder, 2004-12-12
-#         http://nedbatchelder.com/code/modules/coverage.html
-#
-#
-# 1. INTRODUCTION
-#
-# This module provides coverage testing for Python code.
-#
-# The intended readership is all Python developers.
-#
-# This document is not confidential.
-#
-# See [GDR 2001-12-04a] for the command-line interface, programmatic
-# interface and limitations.  See [GDR 2001-12-04b] for requirements and
-# design.
-
-r"""Usage:
-
-coverage.py -x [-p] MODULE.py [ARG1 ARG2 ...]
-    Execute module, passing the given command-line arguments, collecting
-    coverage data. With the -p option, write to a temporary file containing
-    the machine name and process ID.
-
-coverage.py -e
-    Erase collected coverage data.
-
-coverage.py -c
-    Collect data from multiple coverage files (as created by -p option above)
-    and store it into a single file representing the union of the coverage.
-
-coverage.py -r [-m] [-o dir1,dir2,...] FILE1 FILE2 ...
-    Report on the statement coverage for the given files.  With the -m
-    option, show line numbers of the statements that weren't executed.
-
-coverage.py -a [-d dir] [-o dir1,dir2,...] FILE1 FILE2 ...
-    Make annotated copies of the given files, marking statements that
-    are executed with > and statements that are missed with !.  With
-    the -d option, make the copies in that directory.  Without the -d
-    option, make each copy in the same directory as the original.
-
--o dir,dir2,...
-  Omit reporting or annotating files when their filename path starts with
-  a directory listed in the omit list.
-  e.g. python coverage.py -i -r -o c:\python23,lib\enthought\traits
-
-Coverage data is saved in the file .coverage by default.  Set the
-COVERAGE_FILE environment variable to save it somewhere else."""
-
-__version__ = "2.6.20060823"    # see detailed history at the end of this file.
-
-import compiler
-import compiler.visitor
-import os
-import re
-import string
-import sys
-import threading
-import types
-from socket import gethostname
-
-# 2. IMPLEMENTATION
-#
-# This uses the "singleton" pattern.
-#
-# The word "morf" means a module object (from which the source file can
-# be deduced by suitable manipulation of the __file__ attribute) or a
-# filename.
-#
-# When we generate a coverage report we have to canonicalize every
-# filename in the coverage dictionary just in case it refers to the
-# module we are reporting on.  It seems a shame to throw away this
-# information so the data in the coverage dictionary is transferred to
-# the 'cexecuted' dictionary under the canonical filenames.
-#
-# The coverage dictionary is called "c" and the trace function "t".  The
-# reason for these short names is that Python looks up variables by name
-# at runtime and so execution time depends on the length of variables!
-# In the bottleneck of this application it's appropriate to abbreviate
-# names to increase speed.
-
-class StatementFindingAstVisitor(compiler.visitor.ASTVisitor):
-    def __init__(self, statements, excluded, suite_spots):
-        compiler.visitor.ASTVisitor.__init__(self)
-        self.statements = statements
-        self.excluded = excluded
-        self.suite_spots = suite_spots
-        self.excluding_suite = 0
-        
-    def doRecursive(self, node):
-        self.recordNodeLine(node)
-        for n in node.getChildNodes():
-            self.dispatch(n)
-
-    visitStmt = visitModule = doRecursive
-    
-    def doCode(self, node):
-        if hasattr(node, 'decorators') and node.decorators:
-            self.dispatch(node.decorators)
-            self.recordAndDispatch(node.code)
-        else:
-            self.doSuite(node, node.code)
-            
-    visitFunction = visitClass = doCode
-
-    def getFirstLine(self, node):
-        # Find the first line in the tree node.
-        lineno = node.lineno
-        for n in node.getChildNodes():
-            f = self.getFirstLine(n)
-            if lineno and f:
-                lineno = min(lineno, f)
-            else:
-                lineno = lineno or f
-        return lineno
-
-    def getLastLine(self, node):
-        # Find the first line in the tree node.
-        lineno = node.lineno
-        for n in node.getChildNodes():
-            lineno = max(lineno, self.getLastLine(n))
-        return lineno
-    
-    def doStatement(self, node):
-        self.recordLine(self.getFirstLine(node))
-
-    visitAssert = visitAssign = visitAssTuple = visitDiscard = visitPrint = \
-        visitPrintnl = visitRaise = visitSubscript = visitDecorators = \
-        doStatement
-    
-    def recordNodeLine(self, node):
-        return self.recordLine(node.lineno)
-    
-    def recordLine(self, lineno):
-        # Returns a bool, whether the line is included or excluded.
-        if lineno:
-            # Multi-line tests introducing suites have to get charged to their
-            # keyword.
-            if lineno in self.suite_spots:
-                lineno = self.suite_spots[lineno][0]
-            # If we're inside an exluded suite, record that this line was
-            # excluded.
-            if self.excluding_suite:
-                self.excluded[lineno] = 1
-                return 0
-            # If this line is excluded, or suite_spots maps this line to
-            # another line that is exlcuded, then we're excluded.
-            elif self.excluded.has_key(lineno) or \
-                 self.suite_spots.has_key(lineno) and \
-                 self.excluded.has_key(self.suite_spots[lineno][1]):
-                return 0
-            # Otherwise, this is an executable line.
-            else:
-                self.statements[lineno] = 1
-                return 1
-        return 0
-    
-    default = recordNodeLine
-    
-    def recordAndDispatch(self, node):
-        self.recordNodeLine(node)
-        self.dispatch(node)
-
-    def doSuite(self, intro, body, exclude=0):
-        exsuite = self.excluding_suite
-        if exclude or (intro and not self.recordNodeLine(intro)):
-            self.excluding_suite = 1
-        self.recordAndDispatch(body)
-        self.excluding_suite = exsuite
-        
-    def doPlainWordSuite(self, prevsuite, suite):
-        # Finding the exclude lines for else's is tricky, because they aren't
-        # present in the compiler parse tree.  Look at the previous suite,
-        # and find its last line.  If any line between there and the else's
-        # first line are excluded, then we exclude the else.
-        lastprev = self.getLastLine(prevsuite)
-        firstelse = self.getFirstLine(suite)
-        for l in range(lastprev+1, firstelse):
-            if self.suite_spots.has_key(l):
-                self.doSuite(None, suite, exclude=self.excluded.has_key(l))
-                break
-        else:
-            self.doSuite(None, suite)
-        
-    def doElse(self, prevsuite, node):
-        if node.else_:
-            self.doPlainWordSuite(prevsuite, node.else_)
-    
-    def visitFor(self, node):
-        self.doSuite(node, node.body)
-        self.doElse(node.body, node)
-
-    def visitIf(self, node):
-        # The first test has to be handled separately from the rest.
-        # The first test is credited to the line with the "if", but the others
-        # are credited to the line with the test for the elif.
-        self.doSuite(node, node.tests[0][1])
-        for t, n in node.tests[1:]:
-            self.doSuite(t, n)
-        self.doElse(node.tests[-1][1], node)
-
-    def visitWhile(self, node):
-        self.doSuite(node, node.body)
-        self.doElse(node.body, node)
-
-    def visitTryExcept(self, node):
-        self.doSuite(node, node.body)
-        for i in range(len(node.handlers)):
-            a, b, h = node.handlers[i]
-            if not a:
-                # It's a plain "except:".  Find the previous suite.
-                if i > 0:
-                    prev = node.handlers[i-1][2]
-                else:
-                    prev = node.body
-                self.doPlainWordSuite(prev, h)
-            else:
-                self.doSuite(a, h)
-        self.doElse(node.handlers[-1][2], node)
-    
-    def visitTryFinally(self, node):
-        self.doSuite(node, node.body)
-        self.doPlainWordSuite(node.body, node.final)
-        
-    def visitGlobal(self, node):
-        # "global" statements don't execute like others (they don't call the
-        # trace function), so don't record their line numbers.
-        pass
-
-the_coverage = None
-
-class CoverageException(Exception): pass
-
-class coverage:
-    # Name of the cache file (unless environment variable is set).
-    cache_default = ".coverage"
-
-    # Environment variable naming the cache file.
-    cache_env = "COVERAGE_FILE"
-
-    # A dictionary with an entry for (Python source file name, line number
-    # in that file) if that line has been executed.
-    c = {}
-    
-    # A map from canonical Python source file name to a dictionary in
-    # which there's an entry for each line number that has been
-    # executed.
-    cexecuted = {}
-
-    # Cache of results of calling the analysis2() method, so that you can
-    # specify both -r and -a without doing double work.
-    analysis_cache = {}
-
-    # Cache of results of calling the canonical_filename() method, to
-    # avoid duplicating work.
-    canonical_filename_cache = {}
-
-    def __init__(self):
-        global the_coverage
-        if the_coverage:
-            raise CoverageException, "Only one coverage object allowed."
-        self.usecache = 1
-        self.cache = None
-        self.exclude_re = ''
-        self.nesting = 0
-        self.cstack = []
-        self.xstack = []
-        self.relative_dir = os.path.normcase(os.path.abspath(os.curdir)+os.path.sep)
-
-    # t(f, x, y).  This method is passed to sys.settrace as a trace function.  
-    # See [van Rossum 2001-07-20b, 9.2] for an explanation of sys.settrace and 
-    # the arguments and return value of the trace function.
-    # See [van Rossum 2001-07-20a, 3.2] for a description of frame and code
-    # objects.
-    
-    def t(self, f, w, a):                                   #pragma: no cover
-        if w == 'line':
-            self.c[(f.f_code.co_filename, f.f_lineno)] = 1
-            for c in self.cstack:
-                c[(f.f_code.co_filename, f.f_lineno)] = 1
-        return self.t
-    
-    def help(self, error=None):
-        if error:
-            print error
-            print
-        print __doc__
-        sys.exit(1)
-
-    def command_line(self, argv, help=None):
-        import getopt
-        help = help or self.help
-        settings = {}
-        optmap = {
-            '-a': 'annotate',
-            '-c': 'collect',
-            '-d:': 'directory=',
-            '-e': 'erase',
-            '-h': 'help',
-            '-i': 'ignore-errors',
-            '-m': 'show-missing',
-            '-p': 'parallel-mode',
-            '-r': 'report',
-            '-x': 'execute',
-            '-o:': 'omit=',
-            }
-        short_opts = string.join(map(lambda o: o[1:], optmap.keys()), '')
-        long_opts = optmap.values()
-        options, args = getopt.getopt(argv, short_opts, long_opts)
-        for o, a in options:
-            if optmap.has_key(o):
-                settings[optmap[o]] = 1
-            elif optmap.has_key(o + ':'):
-                settings[optmap[o + ':']] = a
-            elif o[2:] in long_opts:
-                settings[o[2:]] = 1
-            elif o[2:] + '=' in long_opts:
-                settings[o[2:]+'='] = a
-            else:       #pragma: no cover
-                pass    # Can't get here, because getopt won't return anything unknown.
-
-        if settings.get('help'):
-            help()
-
-        for i in ['erase', 'execute']:
-            for j in ['annotate', 'report', 'collect']:
-                if settings.get(i) and settings.get(j):
-                    help("You can't specify the '%s' and '%s' "
-                              "options at the same time." % (i, j))
-
-        args_needed = (settings.get('execute')
-                       or settings.get('annotate')
-                       or settings.get('report'))
-        action = (settings.get('erase') 
-                  or settings.get('collect')
-                  or args_needed)
-        if not action:
-            help("You must specify at least one of -e, -x, -c, -r, or -a.")
-        if not args_needed and args:
-            help("Unexpected arguments: %s" % " ".join(args))
-        
-        self.get_ready(settings.get('parallel-mode'))
-        self.exclude('#pragma[: ]+[nN][oO] [cC][oO][vV][eE][rR]')
-
-        if settings.get('erase'):
-            self.erase()
-        if settings.get('execute'):
-            if not args:
-                help("Nothing to do.")
-            sys.argv = args
-            self.start()
-            import __main__
-            sys.path[0] = os.path.dirname(sys.argv[0])
-            execfile(sys.argv[0], __main__.__dict__)
-        if settings.get('collect'):
-            self.collect()
-        if not args:
-            args = self.cexecuted.keys()
-        
-        ignore_errors = settings.get('ignore-errors')
-        show_missing = settings.get('show-missing')
-        directory = settings.get('directory=')
-
-        omit = settings.get('omit=')
-        if omit is not None:
-            omit = omit.split(',')
-        else:
-            omit = []
-
-        if settings.get('report'):
-            self.report(args, show_missing, ignore_errors, omit_prefixes=omit)
-        if settings.get('annotate'):
-            self.annotate(args, directory, ignore_errors, omit_prefixes=omit)
-
-    def use_cache(self, usecache, cache_file=None):
-        self.usecache = usecache
-        if cache_file and not self.cache:
-            self.cache_default = cache_file
-        
-    def get_ready(self, parallel_mode=False):
-        if self.usecache and not self.cache:
-            self.cache = os.environ.get(self.cache_env, self.cache_default)
-            if parallel_mode:
-                self.cache += "." + gethostname() + "." + str(os.getpid())
-            self.restore()
-        self.analysis_cache = {}
-        
-    def start(self, parallel_mode=False):
-        self.get_ready(parallel_mode)
-        if self.nesting == 0:                               #pragma: no cover
-            sys.settrace(self.t)
-            if hasattr(threading, 'settrace'):
-                threading.settrace(self.t)
-        self.nesting += 1
-        
-    def stop(self):
-        self.nesting -= 1
-        if self.nesting == 0:                               #pragma: no cover
-            sys.settrace(None)
-            if hasattr(threading, 'settrace'):
-                threading.settrace(None)
-
-    def erase(self):
-        self.c = {}
-        self.analysis_cache = {}
-        self.cexecuted = {}
-        if self.cache and os.path.exists(self.cache):
-            os.remove(self.cache)
-        self.exclude_re = ""
-
-    def exclude(self, re):
-        if self.exclude_re:
-            self.exclude_re += "|"
-        self.exclude_re += "(" + re + ")"
-
-    def begin_recursive(self):
-        self.cstack.append(self.c)
-        self.xstack.append(self.exclude_re)
-        
-    def end_recursive(self):
-        self.c = self.cstack.pop()
-        self.exclude_re = self.xstack.pop()
-
-    # save().  Save coverage data to the coverage cache.
-
-    def save(self):
-        if self.usecache and self.cache:
-            self.canonicalize_filenames()
-            cache = open(self.cache, 'wb')
-            import marshal
-            marshal.dump(self.cexecuted, cache)
-            cache.close()
-
-    # restore().  Restore coverage data from the coverage cache (if it exists).
-
-    def restore(self):
-        self.c = {}
-        self.cexecuted = {}
-        assert self.usecache
-        if os.path.exists(self.cache):
-            self.cexecuted = self.restore_file(self.cache)
-
-    def restore_file(self, file_name):
-        try:
-            cache = open(file_name, 'rb')
-            import marshal
-            cexecuted = marshal.load(cache)
-            cache.close()
-            if isinstance(cexecuted, types.DictType):
-                return cexecuted
-            else:
-                return {}
-        except:
-            return {}
-
-    # collect(). Collect data in multiple files produced by parallel mode
-
-    def collect(self):
-        cache_dir, local = os.path.split(self.cache)
-        for file in os.listdir(cache_dir):
-            if not file.startswith(local):
-                continue
-
-            full_path = os.path.join(cache_dir, file)
-            cexecuted = self.restore_file(full_path)
-            self.merge_data(cexecuted)
-
-    def merge_data(self, new_data):
-        for file_name, file_data in new_data.items():
-            if self.cexecuted.has_key(file_name):
-                self.merge_file_data(self.cexecuted[file_name], file_data)
-            else:
-                self.cexecuted[file_name] = file_data
-
-    def merge_file_data(self, cache_data, new_data):
-        for line_number in new_data.keys():
-            if not cache_data.has_key(line_number):
-                cache_data[line_number] = new_data[line_number]
-
-    # canonical_filename(filename).  Return a canonical filename for the
-    # file (that is, an absolute path with no redundant components and
-    # normalized case).  See [GDR 2001-12-04b, 3.3].
-
-    def canonical_filename(self, filename):
-        if not self.canonical_filename_cache.has_key(filename):
-            f = filename
-            if os.path.isabs(f) and not os.path.exists(f):
-                f = os.path.basename(f)
-            if not os.path.isabs(f):
-                for path in [os.curdir] + sys.path:
-                    g = os.path.join(path, f)
-                    if os.path.exists(g):
-                        f = g
-                        break
-            cf = os.path.normcase(os.path.abspath(f))
-            self.canonical_filename_cache[filename] = cf
-        return self.canonical_filename_cache[filename]
-
-    # canonicalize_filenames().  Copy results from "c" to "cexecuted", 
-    # canonicalizing filenames on the way.  Clear the "c" map.
-
-    def canonicalize_filenames(self):
-        for filename, lineno in self.c.keys():
-            f = self.canonical_filename(filename)
-            if not self.cexecuted.has_key(f):
-                self.cexecuted[f] = {}
-            self.cexecuted[f][lineno] = 1
-        self.c = {}
-
-    # morf_filename(morf).  Return the filename for a module or file.
-
-    def morf_filename(self, morf):
-        if isinstance(morf, types.ModuleType):
-            if not hasattr(morf, '__file__'):
-                raise CoverageException, "Module has no __file__ attribute."
-            file = morf.__file__
-        else:
-            file = morf
-        return self.canonical_filename(file)
-
-    # analyze_morf(morf).  Analyze the module or filename passed as
-    # the argument.  If the source code can't be found, raise an error.
-    # Otherwise, return a tuple of (1) the canonical filename of the
-    # source code for the module, (2) a list of lines of statements
-    # in the source code, and (3) a list of lines of excluded statements.
-
-    def analyze_morf(self, morf):
-        if self.analysis_cache.has_key(morf):
-            return self.analysis_cache[morf]
-        filename = self.morf_filename(morf)
-        ext = os.path.splitext(filename)[1]
-        if ext == '.pyc':
-            if not os.path.exists(filename[0:-1]):
-                raise CoverageException, ("No source for compiled code '%s'."
-                                   % filename)
-            filename = filename[0:-1]
-        elif ext != '.py':
-            raise CoverageException, "File '%s' not Python source." % filename
-        source = open(filename, 'r')
-        lines, excluded_lines = self.find_executable_statements(
-            source.read(), exclude=self.exclude_re
-            )
-        source.close()
-        result = filename, lines, excluded_lines
-        self.analysis_cache[morf] = result
-        return result
-
-    def get_suite_spots(self, tree, spots):
-        import symbol, token
-        for i in range(1, len(tree)):
-            if type(tree[i]) == type(()):
-                if tree[i][0] == symbol.suite:
-                    # Found a suite, look back for the colon and keyword.
-                    lineno_colon = lineno_word = None
-                    for j in range(i-1, 0, -1):
-                        if tree[j][0] == token.COLON:
-                            lineno_colon = tree[j][2]
-                        elif tree[j][0] == token.NAME:
-                            if tree[j][1] == 'elif':
-                                # Find the line number of the first non-terminal
-                                # after the keyword.
-                                t = tree[j+1]
-                                while t and token.ISNONTERMINAL(t[0]):
-                                    t = t[1]
-                                if t:
-                                    lineno_word = t[2]
-                            else:
-                                lineno_word = tree[j][2]
-                            break
-                        elif tree[j][0] == symbol.except_clause:
-                            # "except" clauses look like:
-                            # ('except_clause', ('NAME', 'except', lineno), ...)
-                            if tree[j][1][0] == token.NAME:
-                                lineno_word = tree[j][1][2]
-                                break
-                    if lineno_colon and lineno_word:
-                        # Found colon and keyword, mark all the lines
-                        # between the two with the two line numbers.
-                        for l in range(lineno_word, lineno_colon+1):
-                            spots[l] = (lineno_word, lineno_colon)
-                self.get_suite_spots(tree[i], spots)
-
-    def find_executable_statements(self, text, exclude=None):
-        # Find lines which match an exclusion pattern.
-        excluded = {}
-        suite_spots = {}
-        if exclude:
-            reExclude = re.compile(exclude)
-            lines = text.split('\n')
-            for i in range(len(lines)):
-                if reExclude.search(lines[i]):
-                    excluded[i+1] = 1
-
-        import parser
-        tree = parser.suite(text+'\n\n').totuple(1)
-        self.get_suite_spots(tree, suite_spots)
-            
-        # Use the compiler module to parse the text and find the executable
-        # statements.  We add newlines to be impervious to final partial lines.
-        statements = {}
-        ast = compiler.parse(text+'\n\n')
-        visitor = StatementFindingAstVisitor(statements, excluded, suite_spots)
-        compiler.walk(ast, visitor, walker=visitor)
-
-        lines = statements.keys()
-        lines.sort()
-        excluded_lines = excluded.keys()
-        excluded_lines.sort()
-        return lines, excluded_lines
-
-    # format_lines(statements, lines).  Format a list of line numbers
-    # for printing by coalescing groups of lines as long as the lines
-    # represent consecutive statements.  This will coalesce even if
-    # there are gaps between statements, so if statements =
-    # [1,2,3,4,5,10,11,12,13,14] and lines = [1,2,5,10,11,13,14] then
-    # format_lines will return "1-2, 5-11, 13-14".
-
-    def format_lines(self, statements, lines):
-        pairs = []
-        i = 0
-        j = 0
-        start = None
-        pairs = []
-        while i < len(statements) and j < len(lines):
-            if statements[i] == lines[j]:
-                if start == None:
-                    start = lines[j]
-                end = lines[j]
-                j = j + 1
-            elif start:
-                pairs.append((start, end))
-                start = None
-            i = i + 1
-        if start:
-            pairs.append((start, end))
-        def stringify(pair):
-            start, end = pair
-            if start == end:
-                return "%d" % start
-            else:
-                return "%d-%d" % (start, end)
-        return string.join(map(stringify, pairs), ", ")
-
-    # Backward compatibility with version 1.
-    def analysis(self, morf):
-        f, s, _, m, mf = self.analysis2(morf)
-        return f, s, m, mf
-
-    def analysis2(self, morf):
-        filename, statements, excluded = self.analyze_morf(morf)
-        self.canonicalize_filenames()
-        if not self.cexecuted.has_key(filename):
-            self.cexecuted[filename] = {}
-        missing = []
-        for line in statements:
-            if not self.cexecuted[filename].has_key(line):
-                missing.append(line)
-        return (filename, statements, excluded, missing,
-                self.format_lines(statements, missing))
-
-    def relative_filename(self, filename):
-        """ Convert filename to relative filename from self.relative_dir.
-        """
-        return filename.replace(self.relative_dir, "")
-
-    def morf_name(self, morf):
-        """ Return the name of morf as used in report.
-        """
-        if isinstance(morf, types.ModuleType):
-            return morf.__name__
-        else:
-            return self.relative_filename(os.path.splitext(morf)[0])
-
-    def filter_by_prefix(self, morfs, omit_prefixes):
-        """ Return list of morfs where the morf name does not begin
-            with any one of the omit_prefixes.
-        """
-        filtered_morfs = []
-        for morf in morfs:
-            for prefix in omit_prefixes:
-                if self.morf_name(morf).startswith(prefix):
-                    break
-            else:
-                filtered_morfs.append(morf)
-
-        return filtered_morfs
-
-    def morf_name_compare(self, x, y):
-        return cmp(self.morf_name(x), self.morf_name(y))
-
-    def report(self, morfs, show_missing=1, ignore_errors=0, file=None, omit_prefixes=[]):
-        if not isinstance(morfs, types.ListType):
-            morfs = [morfs]
-        morfs = self.filter_by_prefix(morfs, omit_prefixes)
-        morfs.sort(self.morf_name_compare)
-
-        max_name = max([5,] + map(len, map(self.morf_name, morfs)))
-        fmt_name = "%%- %ds  " % max_name
-        fmt_err = fmt_name + "%s: %s"
-        header = fmt_name % "Name" + " Stmts   Exec  Cover"
-        fmt_coverage = fmt_name + "% 6d % 6d % 5d%%"
-        if show_missing:
-            header = header + "   Missing"
-            fmt_coverage = fmt_coverage + "   %s"
-        if not file:
-            file = sys.stdout
-        print >>file, header
-        print >>file, "-" * len(header)
-        total_statements = 0
-        total_executed = 0
-        for morf in morfs:
-            name = self.morf_name(morf)
-            try:
-                _, statements, _, missing, readable  = self.analysis2(morf)
-                n = len(statements)
-                m = n - len(missing)
-                if n > 0:
-                    pc = 100.0 * m / n
-                else:
-                    pc = 100.0
-                args = (name, n, m, pc)
-                if show_missing:
-                    args = args + (readable,)
-                print >>file, fmt_coverage % args
-                total_statements = total_statements + n
-                total_executed = total_executed + m
-            except KeyboardInterrupt:                       #pragma: no cover
-                raise
-            except:
-                if not ignore_errors:
-                    type, msg = sys.exc_info()[0:2]
-                    print >>file, fmt_err % (name, type, msg)
-        if len(morfs) > 1:
-            print >>file, "-" * len(header)
-            if total_statements > 0:
-                pc = 100.0 * total_executed / total_statements
-            else:
-                pc = 100.0
-            args = ("TOTAL", total_statements, total_executed, pc)
-            if show_missing:
-                args = args + ("",)
-            print >>file, fmt_coverage % args
-
-    # annotate(morfs, ignore_errors).
-
-    blank_re = re.compile(r"\s*(#|$)")
-    else_re = re.compile(r"\s*else\s*:\s*(#|$)")
-
-    def annotate(self, morfs, directory=None, ignore_errors=0, omit_prefixes=[]):
-        morfs = self.filter_by_prefix(morfs, omit_prefixes)
-        for morf in morfs:
-            try:
-                filename, statements, excluded, missing, _ = self.analysis2(morf)
-                self.annotate_file(filename, statements, excluded, missing, directory)
-            except KeyboardInterrupt:
-                raise
-            except:
-                if not ignore_errors:
-                    raise
-                
-    def annotate_file(self, filename, statements, excluded, missing, directory=None):
-        source = open(filename, 'r')
-        if directory:
-            dest_file = os.path.join(directory,
-                                     os.path.basename(filename)
-                                     + ',cover')
-        else:
-            dest_file = filename + ',cover'
-        dest = open(dest_file, 'w')
-        lineno = 0
-        i = 0
-        j = 0
-        covered = 1
-        while 1:
-            line = source.readline()
-            if line == '':
-                break
-            lineno = lineno + 1
-            while i < len(statements) and statements[i] < lineno:
-                i = i + 1
-            while j < len(missing) and missing[j] < lineno:
-                j = j + 1
-            if i < len(statements) and statements[i] == lineno:
-                covered = j >= len(missing) or missing[j] > lineno
-            if self.blank_re.match(line):
-                dest.write('  ')
-            elif self.else_re.match(line):
-                # Special logic for lines containing only 'else:'.  
-                # See [GDR 2001-12-04b, 3.2].
-                if i >= len(statements) and j >= len(missing):
-                    dest.write('! ')
-                elif i >= len(statements) or j >= len(missing):
-                    dest.write('> ')
-                elif statements[i] == missing[j]:
-                    dest.write('! ')
-                else:
-                    dest.write('> ')
-            elif lineno in excluded:
-                dest.write('- ')
-            elif covered:
-                dest.write('> ')
-            else:
-                dest.write('! ')
-            dest.write(line)
-        source.close()
-        dest.close()
-
-# Singleton object.
-the_coverage = coverage()
-
-# Module functions call methods in the singleton object.
-def use_cache(*args, **kw): return the_coverage.use_cache(*args, **kw)
-def start(*args, **kw): return the_coverage.start(*args, **kw)
-def stop(*args, **kw): return the_coverage.stop(*args, **kw)
-def erase(*args, **kw): return the_coverage.erase(*args, **kw)
-def begin_recursive(*args, **kw): return the_coverage.begin_recursive(*args, **kw)
-def end_recursive(*args, **kw): return the_coverage.end_recursive(*args, **kw)
-def exclude(*args, **kw): return the_coverage.exclude(*args, **kw)
-def analysis(*args, **kw): return the_coverage.analysis(*args, **kw)
-def analysis2(*args, **kw): return the_coverage.analysis2(*args, **kw)
-def report(*args, **kw): return the_coverage.report(*args, **kw)
-def annotate(*args, **kw): return the_coverage.annotate(*args, **kw)
-def annotate_file(*args, **kw): return the_coverage.annotate_file(*args, **kw)
-
-# Save coverage data when Python exits.  (The atexit module wasn't
-# introduced until Python 2.0, so use sys.exitfunc when it's not
-# available.)
-try:
-    import atexit
-    atexit.register(the_coverage.save)
-except ImportError:
-    sys.exitfunc = the_coverage.save
-
-# Command-line interface.
-if __name__ == '__main__':
-    the_coverage.command_line(sys.argv[1:])
-
-
-# A. REFERENCES
-#
-# [GDR 2001-12-04a] "Statement coverage for Python"; Gareth Rees;
-# Ravenbrook Limited; 2001-12-04;
-# <http://www.nedbatchelder.com/code/modules/rees-coverage.html>.
-#
-# [GDR 2001-12-04b] "Statement coverage for Python: design and
-# analysis"; Gareth Rees; Ravenbrook Limited; 2001-12-04;
-# <http://www.nedbatchelder.com/code/modules/rees-design.html>.
-#
-# [van Rossum 2001-07-20a] "Python Reference Manual (releae 2.1.1)";
-# Guide van Rossum; 2001-07-20;
-# <http://www.python.org/doc/2.1.1/ref/ref.html>.
-#
-# [van Rossum 2001-07-20b] "Python Library Reference"; Guido van Rossum;
-# 2001-07-20; <http://www.python.org/doc/2.1.1/lib/lib.html>.
-#
-#
-# B. DOCUMENT HISTORY
-#
-# 2001-12-04 GDR Created.
-#
-# 2001-12-06 GDR Added command-line interface and source code
-# annotation.
-#
-# 2001-12-09 GDR Moved design and interface to separate documents.
-#
-# 2001-12-10 GDR Open cache file as binary on Windows.  Allow
-# simultaneous -e and -x, or -a and -r.
-#
-# 2001-12-12 GDR Added command-line help.  Cache analysis so that it
-# only needs to be done once when you specify -a and -r.
-#
-# 2001-12-13 GDR Improved speed while recording.  Portable between
-# Python 1.5.2 and 2.1.1.
-#
-# 2002-01-03 GDR Module-level functions work correctly.
-#
-# 2002-01-07 GDR Update sys.path when running a file with the -x option,
-# so that it matches the value the program would get if it were run on
-# its own.
-#
-# 2004-12-12 NMB Significant code changes.
-# - Finding executable statements has been rewritten so that docstrings and
-#   other quirks of Python execution aren't mistakenly identified as missing
-#   lines.
-# - Lines can be excluded from consideration, even entire suites of lines.
-# - The filesystem cache of covered lines can be disabled programmatically.
-# - Modernized the code.
-#
-# 2004-12-14 NMB Minor tweaks.  Return 'analysis' to its original behavior
-# and add 'analysis2'.  Add a global for 'annotate', and factor it, adding
-# 'annotate_file'.
-#
-# 2004-12-31 NMB Allow for keyword arguments in the module global functions.
-# Thanks, Allen.
-#
-# 2005-12-02 NMB Call threading.settrace so that all threads are measured.
-# Thanks Martin Fuzzey. Add a file argument to report so that reports can be 
-# captured to a different destination.
-#
-# 2005-12-03 NMB coverage.py can now measure itself.
-#
-# 2005-12-04 NMB Adapted Greg Rogers' patch for using relative filenames,
-# and sorting and omitting files to report on.
-#
-# 2006-07-23 NMB Applied Joseph Tate's patch for function decorators.
-#
-# 2006-08-21 NMB Applied Sigve Tjora and Mark van der Wal's fixes for argument
-# handling.
-#
-# 2006-08-22 NMB Applied Geoff Bache's parallel mode patch.
-#
-# 2006-08-23 NMB Refactorings to improve testability.  Fixes to command-line
-# logic for parallel mode and collect.
-
-# C. COPYRIGHT AND LICENCE
-#
-# Copyright 2001 Gareth Rees.  All rights reserved.
-# Copyright 2004-2006 Ned Batchelder.  All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-# 1. Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-#
-# 2. Redistributions in binary form must reproduce the above copyright
-#    notice, this list of conditions and the following disclaimer in the
-#    documentation and/or other materials provided with the
-#    distribution.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# HOLDERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
-# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
-# TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
-# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
-# DAMAGE.
-#
-# $Id: coverage.py 47 2006-08-24 01:08:48Z Ned $