symbian-qemu-0.9.1-12/python-win32-2.6.1/lib/trace.py
changeset 1 2fb8b9db1c86
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/python-win32-2.6.1/lib/trace.py	Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,813 @@
+#!/usr/bin/env python
+
+# portions copyright 2001, Autonomous Zones Industries, Inc., all rights...
+# err...  reserved and offered to the public under the terms of the
+# Python 2.2 license.
+# Author: Zooko O'Whielacronx
+# http://zooko.com/
+# mailto:zooko@zooko.com
+#
+# Copyright 2000, Mojam Media, Inc., all rights reserved.
+# Author: Skip Montanaro
+#
+# Copyright 1999, Bioreason, Inc., all rights reserved.
+# Author: Andrew Dalke
+#
+# Copyright 1995-1997, Automatrix, Inc., all rights reserved.
+# Author: Skip Montanaro
+#
+# Copyright 1991-1995, Stichting Mathematisch Centrum, all rights reserved.
+#
+#
+# Permission to use, copy, modify, and distribute this Python software and
+# its associated documentation for any purpose without fee is hereby
+# granted, provided that the above copyright notice appears in all copies,
+# and that both that copyright notice and this permission notice appear in
+# supporting documentation, and that the name of neither Automatrix,
+# Bioreason or Mojam Media be used in advertising or publicity pertaining to
+# distribution of the software without specific, written prior permission.
+#
+"""program/module to trace Python program or function execution
+
+Sample use, command line:
+  trace.py -c -f counts --ignore-dir '$prefix' spam.py eggs
+  trace.py -t --ignore-dir '$prefix' spam.py eggs
+  trace.py --trackcalls spam.py eggs
+
+Sample use, programmatically
+  import sys
+
+  # create a Trace object, telling it what to ignore, and whether to
+  # do tracing or line-counting or both.
+  tracer = trace.Trace(ignoredirs=[sys.prefix, sys.exec_prefix,], trace=0,
+                    count=1)
+  # run the new command using the given tracer
+  tracer.run('main()')
+  # make a report, placing output in /tmp
+  r = tracer.results()
+  r.write_results(show_missing=True, coverdir="/tmp")
+"""
+
+import linecache
+import os
+import re
+import sys
+import threading
+import time
+import token
+import tokenize
+import types
+import gc
+
+try:
+    import cPickle
+    pickle = cPickle
+except ImportError:
+    import pickle
+
+def usage(outfile):
+    outfile.write("""Usage: %s [OPTIONS] <file> [ARGS]
+
+Meta-options:
+--help                Display this help then exit.
+--version             Output version information then exit.
+
+Otherwise, exactly one of the following three options must be given:
+-t, --trace           Print each line to sys.stdout before it is executed.
+-c, --count           Count the number of times each line is executed
+                      and write the counts to <module>.cover for each
+                      module executed, in the module's directory.
+                      See also `--coverdir', `--file', `--no-report' below.
+-l, --listfuncs       Keep track of which functions are executed at least
+                      once and write the results to sys.stdout after the
+                      program exits.
+-T, --trackcalls      Keep track of caller/called pairs and write the
+                      results to sys.stdout after the program exits.
+-r, --report          Generate a report from a counts file; do not execute
+                      any code.  `--file' must specify the results file to
+                      read, which must have been created in a previous run
+                      with `--count --file=FILE'.
+
+Modifiers:
+-f, --file=<file>     File to accumulate counts over several runs.
+-R, --no-report       Do not generate the coverage report files.
+                      Useful if you want to accumulate over several runs.
+-C, --coverdir=<dir>  Directory where the report files.  The coverage
+                      report for <package>.<module> is written to file
+                      <dir>/<package>/<module>.cover.
+-m, --missing         Annotate executable lines that were not executed
+                      with '>>>>>> '.
+-s, --summary         Write a brief summary on stdout for each file.
+                      (Can only be used with --count or --report.)
+-g, --timing          Prefix each line with the time since the program started.
+                      Only used while tracing.
+
+Filters, may be repeated multiple times:
+--ignore-module=<mod> Ignore the given module(s) and its submodules
+                      (if it is a package).  Accepts comma separated
+                      list of module names
+--ignore-dir=<dir>    Ignore files in the given directory (multiple
+                      directories can be joined by os.pathsep).
+""" % sys.argv[0])
+
+PRAGMA_NOCOVER = "#pragma NO COVER"
+
+# Simple rx to find lines with no code.
+rx_blank = re.compile(r'^\s*(#.*)?$')
+
+class Ignore:
+    def __init__(self, modules = None, dirs = None):
+        self._mods = modules or []
+        self._dirs = dirs or []
+
+        self._dirs = map(os.path.normpath, self._dirs)
+        self._ignore = { '<string>': 1 }
+
+    def names(self, filename, modulename):
+        if self._ignore.has_key(modulename):
+            return self._ignore[modulename]
+
+        # haven't seen this one before, so see if the module name is
+        # on the ignore list.  Need to take some care since ignoring
+        # "cmp" musn't mean ignoring "cmpcache" but ignoring
+        # "Spam" must also mean ignoring "Spam.Eggs".
+        for mod in self._mods:
+            if mod == modulename:  # Identical names, so ignore
+                self._ignore[modulename] = 1
+                return 1
+            # check if the module is a proper submodule of something on
+            # the ignore list
+            n = len(mod)
+            # (will not overflow since if the first n characters are the
+            # same and the name has not already occurred, then the size
+            # of "name" is greater than that of "mod")
+            if mod == modulename[:n] and modulename[n] == '.':
+                self._ignore[modulename] = 1
+                return 1
+
+        # Now check that __file__ isn't in one of the directories
+        if filename is None:
+            # must be a built-in, so we must ignore
+            self._ignore[modulename] = 1
+            return 1
+
+        # Ignore a file when it contains one of the ignorable paths
+        for d in self._dirs:
+            # The '+ os.sep' is to ensure that d is a parent directory,
+            # as compared to cases like:
+            #  d = "/usr/local"
+            #  filename = "/usr/local.py"
+            # or
+            #  d = "/usr/local.py"
+            #  filename = "/usr/local.py"
+            if filename.startswith(d + os.sep):
+                self._ignore[modulename] = 1
+                return 1
+
+        # Tried the different ways, so we don't ignore this module
+        self._ignore[modulename] = 0
+        return 0
+
+def modname(path):
+    """Return a plausible module name for the patch."""
+
+    base = os.path.basename(path)
+    filename, ext = os.path.splitext(base)
+    return filename
+
+def fullmodname(path):
+    """Return a plausible module name for the path."""
+
+    # If the file 'path' is part of a package, then the filename isn't
+    # enough to uniquely identify it.  Try to do the right thing by
+    # looking in sys.path for the longest matching prefix.  We'll
+    # assume that the rest is the package name.
+
+    comparepath = os.path.normcase(path)
+    longest = ""
+    for dir in sys.path:
+        dir = os.path.normcase(dir)
+        if comparepath.startswith(dir) and comparepath[len(dir)] == os.sep:
+            if len(dir) > len(longest):
+                longest = dir
+
+    if longest:
+        base = path[len(longest) + 1:]
+    else:
+        base = path
+    base = base.replace(os.sep, ".")
+    if os.altsep:
+        base = base.replace(os.altsep, ".")
+    filename, ext = os.path.splitext(base)
+    return filename
+
+class CoverageResults:
+    def __init__(self, counts=None, calledfuncs=None, infile=None,
+                 callers=None, outfile=None):
+        self.counts = counts
+        if self.counts is None:
+            self.counts = {}
+        self.counter = self.counts.copy() # map (filename, lineno) to count
+        self.calledfuncs = calledfuncs
+        if self.calledfuncs is None:
+            self.calledfuncs = {}
+        self.calledfuncs = self.calledfuncs.copy()
+        self.callers = callers
+        if self.callers is None:
+            self.callers = {}
+        self.callers = self.callers.copy()
+        self.infile = infile
+        self.outfile = outfile
+        if self.infile:
+            # Try to merge existing counts file.
+            try:
+                counts, calledfuncs, callers = \
+                        pickle.load(open(self.infile, 'rb'))
+                self.update(self.__class__(counts, calledfuncs, callers))
+            except (IOError, EOFError, ValueError), err:
+                print >> sys.stderr, ("Skipping counts file %r: %s"
+                                      % (self.infile, err))
+
+    def update(self, other):
+        """Merge in the data from another CoverageResults"""
+        counts = self.counts
+        calledfuncs = self.calledfuncs
+        callers = self.callers
+        other_counts = other.counts
+        other_calledfuncs = other.calledfuncs
+        other_callers = other.callers
+
+        for key in other_counts.keys():
+            counts[key] = counts.get(key, 0) + other_counts[key]
+
+        for key in other_calledfuncs.keys():
+            calledfuncs[key] = 1
+
+        for key in other_callers.keys():
+            callers[key] = 1
+
+    def write_results(self, show_missing=True, summary=False, coverdir=None):
+        """
+        @param coverdir
+        """
+        if self.calledfuncs:
+            print
+            print "functions called:"
+            calls = self.calledfuncs.keys()
+            calls.sort()
+            for filename, modulename, funcname in calls:
+                print ("filename: %s, modulename: %s, funcname: %s"
+                       % (filename, modulename, funcname))
+
+        if self.callers:
+            print
+            print "calling relationships:"
+            calls = self.callers.keys()
+            calls.sort()
+            lastfile = lastcfile = ""
+            for ((pfile, pmod, pfunc), (cfile, cmod, cfunc)) in calls:
+                if pfile != lastfile:
+                    print
+                    print "***", pfile, "***"
+                    lastfile = pfile
+                    lastcfile = ""
+                if cfile != pfile and lastcfile != cfile:
+                    print "  -->", cfile
+                    lastcfile = cfile
+                print "    %s.%s -> %s.%s" % (pmod, pfunc, cmod, cfunc)
+
+        # turn the counts data ("(filename, lineno) = count") into something
+        # accessible on a per-file basis
+        per_file = {}
+        for filename, lineno in self.counts.keys():
+            lines_hit = per_file[filename] = per_file.get(filename, {})
+            lines_hit[lineno] = self.counts[(filename, lineno)]
+
+        # accumulate summary info, if needed
+        sums = {}
+
+        for filename, count in per_file.iteritems():
+            # skip some "files" we don't care about...
+            if filename == "<string>":
+                continue
+            if filename.startswith("<doctest "):
+                continue
+
+            if filename.endswith((".pyc", ".pyo")):
+                filename = filename[:-1]
+
+            if coverdir is None:
+                dir = os.path.dirname(os.path.abspath(filename))
+                modulename = modname(filename)
+            else:
+                dir = coverdir
+                if not os.path.exists(dir):
+                    os.makedirs(dir)
+                modulename = fullmodname(filename)
+
+            # If desired, get a list of the line numbers which represent
+            # executable content (returned as a dict for better lookup speed)
+            if show_missing:
+                lnotab = find_executable_linenos(filename)
+            else:
+                lnotab = {}
+
+            source = linecache.getlines(filename)
+            coverpath = os.path.join(dir, modulename + ".cover")
+            n_hits, n_lines = self.write_results_file(coverpath, source,
+                                                      lnotab, count)
+
+            if summary and n_lines:
+                percent = int(100 * n_hits / n_lines)
+                sums[modulename] = n_lines, percent, modulename, filename
+
+        if summary and sums:
+            mods = sums.keys()
+            mods.sort()
+            print "lines   cov%   module   (path)"
+            for m in mods:
+                n_lines, percent, modulename, filename = sums[m]
+                print "%5d   %3d%%   %s   (%s)" % sums[m]
+
+        if self.outfile:
+            # try and store counts and module info into self.outfile
+            try:
+                pickle.dump((self.counts, self.calledfuncs, self.callers),
+                            open(self.outfile, 'wb'), 1)
+            except IOError, err:
+                print >> sys.stderr, "Can't save counts files because %s" % err
+
+    def write_results_file(self, path, lines, lnotab, lines_hit):
+        """Return a coverage results file in path."""
+
+        try:
+            outfile = open(path, "w")
+        except IOError, err:
+            print >> sys.stderr, ("trace: Could not open %r for writing: %s"
+                                  "- skipping" % (path, err))
+            return 0, 0
+
+        n_lines = 0
+        n_hits = 0
+        for i, line in enumerate(lines):
+            lineno = i + 1
+            # do the blank/comment match to try to mark more lines
+            # (help the reader find stuff that hasn't been covered)
+            if lineno in lines_hit:
+                outfile.write("%5d: " % lines_hit[lineno])
+                n_hits += 1
+                n_lines += 1
+            elif rx_blank.match(line):
+                outfile.write("       ")
+            else:
+                # lines preceded by no marks weren't hit
+                # Highlight them if so indicated, unless the line contains
+                # #pragma: NO COVER
+                if lineno in lnotab and not PRAGMA_NOCOVER in lines[i]:
+                    outfile.write(">>>>>> ")
+                    n_lines += 1
+                else:
+                    outfile.write("       ")
+            outfile.write(lines[i].expandtabs(8))
+        outfile.close()
+
+        return n_hits, n_lines
+
+def find_lines_from_code(code, strs):
+    """Return dict where keys are lines in the line number table."""
+    linenos = {}
+
+    line_increments = [ord(c) for c in code.co_lnotab[1::2]]
+    table_length = len(line_increments)
+    docstring = False
+
+    lineno = code.co_firstlineno
+    for li in line_increments:
+        lineno += li
+        if lineno not in strs:
+            linenos[lineno] = 1
+
+    return linenos
+
+def find_lines(code, strs):
+    """Return lineno dict for all code objects reachable from code."""
+    # get all of the lineno information from the code of this scope level
+    linenos = find_lines_from_code(code, strs)
+
+    # and check the constants for references to other code objects
+    for c in code.co_consts:
+        if isinstance(c, types.CodeType):
+            # find another code object, so recurse into it
+            linenos.update(find_lines(c, strs))
+    return linenos
+
+def find_strings(filename):
+    """Return a dict of possible docstring positions.
+
+    The dict maps line numbers to strings.  There is an entry for
+    line that contains only a string or a part of a triple-quoted
+    string.
+    """
+    d = {}
+    # If the first token is a string, then it's the module docstring.
+    # Add this special case so that the test in the loop passes.
+    prev_ttype = token.INDENT
+    f = open(filename)
+    for ttype, tstr, start, end, line in tokenize.generate_tokens(f.readline):
+        if ttype == token.STRING:
+            if prev_ttype == token.INDENT:
+                sline, scol = start
+                eline, ecol = end
+                for i in range(sline, eline + 1):
+                    d[i] = 1
+        prev_ttype = ttype
+    f.close()
+    return d
+
+def find_executable_linenos(filename):
+    """Return dict where keys are line numbers in the line number table."""
+    try:
+        prog = open(filename, "rU").read()
+    except IOError, err:
+        print >> sys.stderr, ("Not printing coverage data for %r: %s"
+                              % (filename, err))
+        return {}
+    code = compile(prog, filename, "exec")
+    strs = find_strings(filename)
+    return find_lines(code, strs)
+
+class Trace:
+    def __init__(self, count=1, trace=1, countfuncs=0, countcallers=0,
+                 ignoremods=(), ignoredirs=(), infile=None, outfile=None,
+                 timing=False):
+        """
+        @param count true iff it should count number of times each
+                     line is executed
+        @param trace true iff it should print out each line that is
+                     being counted
+        @param countfuncs true iff it should just output a list of
+                     (filename, modulename, funcname,) for functions
+                     that were called at least once;  This overrides
+                     `count' and `trace'
+        @param ignoremods a list of the names of modules to ignore
+        @param ignoredirs a list of the names of directories to ignore
+                     all of the (recursive) contents of
+        @param infile file from which to read stored counts to be
+                     added into the results
+        @param outfile file in which to write the results
+        @param timing true iff timing information be displayed
+        """
+        self.infile = infile
+        self.outfile = outfile
+        self.ignore = Ignore(ignoremods, ignoredirs)
+        self.counts = {}   # keys are (filename, linenumber)
+        self.blabbed = {} # for debugging
+        self.pathtobasename = {} # for memoizing os.path.basename
+        self.donothing = 0
+        self.trace = trace
+        self._calledfuncs = {}
+        self._callers = {}
+        self._caller_cache = {}
+        self.start_time = None
+        if timing:
+            self.start_time = time.time()
+        if countcallers:
+            self.globaltrace = self.globaltrace_trackcallers
+        elif countfuncs:
+            self.globaltrace = self.globaltrace_countfuncs
+        elif trace and count:
+            self.globaltrace = self.globaltrace_lt
+            self.localtrace = self.localtrace_trace_and_count
+        elif trace:
+            self.globaltrace = self.globaltrace_lt
+            self.localtrace = self.localtrace_trace
+        elif count:
+            self.globaltrace = self.globaltrace_lt
+            self.localtrace = self.localtrace_count
+        else:
+            # Ahem -- do nothing?  Okay.
+            self.donothing = 1
+
+    def run(self, cmd):
+        import __main__
+        dict = __main__.__dict__
+        if not self.donothing:
+            sys.settrace(self.globaltrace)
+            threading.settrace(self.globaltrace)
+        try:
+            exec cmd in dict, dict
+        finally:
+            if not self.donothing:
+                sys.settrace(None)
+                threading.settrace(None)
+
+    def runctx(self, cmd, globals=None, locals=None):
+        if globals is None: globals = {}
+        if locals is None: locals = {}
+        if not self.donothing:
+            sys.settrace(self.globaltrace)
+            threading.settrace(self.globaltrace)
+        try:
+            exec cmd in globals, locals
+        finally:
+            if not self.donothing:
+                sys.settrace(None)
+                threading.settrace(None)
+
+    def runfunc(self, func, *args, **kw):
+        result = None
+        if not self.donothing:
+            sys.settrace(self.globaltrace)
+        try:
+            result = func(*args, **kw)
+        finally:
+            if not self.donothing:
+                sys.settrace(None)
+        return result
+
+    def file_module_function_of(self, frame):
+        code = frame.f_code
+        filename = code.co_filename
+        if filename:
+            modulename = modname(filename)
+        else:
+            modulename = None
+
+        funcname = code.co_name
+        clsname = None
+        if code in self._caller_cache:
+            if self._caller_cache[code] is not None:
+                clsname = self._caller_cache[code]
+        else:
+            self._caller_cache[code] = None
+            ## use of gc.get_referrers() was suggested by Michael Hudson
+            # all functions which refer to this code object
+            funcs = [f for f in gc.get_referrers(code)
+                         if hasattr(f, "func_doc")]
+            # require len(func) == 1 to avoid ambiguity caused by calls to
+            # new.function(): "In the face of ambiguity, refuse the
+            # temptation to guess."
+            if len(funcs) == 1:
+                dicts = [d for d in gc.get_referrers(funcs[0])
+                             if isinstance(d, dict)]
+                if len(dicts) == 1:
+                    classes = [c for c in gc.get_referrers(dicts[0])
+                                   if hasattr(c, "__bases__")]
+                    if len(classes) == 1:
+                        # ditto for new.classobj()
+                        clsname = str(classes[0])
+                        # cache the result - assumption is that new.* is
+                        # not called later to disturb this relationship
+                        # _caller_cache could be flushed if functions in
+                        # the new module get called.
+                        self._caller_cache[code] = clsname
+        if clsname is not None:
+            # final hack - module name shows up in str(cls), but we've already
+            # computed module name, so remove it
+            clsname = clsname.split(".")[1:]
+            clsname = ".".join(clsname)
+            funcname = "%s.%s" % (clsname, funcname)
+
+        return filename, modulename, funcname
+
+    def globaltrace_trackcallers(self, frame, why, arg):
+        """Handler for call events.
+
+        Adds information about who called who to the self._callers dict.
+        """
+        if why == 'call':
+            # XXX Should do a better job of identifying methods
+            this_func = self.file_module_function_of(frame)
+            parent_func = self.file_module_function_of(frame.f_back)
+            self._callers[(parent_func, this_func)] = 1
+
+    def globaltrace_countfuncs(self, frame, why, arg):
+        """Handler for call events.
+
+        Adds (filename, modulename, funcname) to the self._calledfuncs dict.
+        """
+        if why == 'call':
+            this_func = self.file_module_function_of(frame)
+            self._calledfuncs[this_func] = 1
+
+    def globaltrace_lt(self, frame, why, arg):
+        """Handler for call events.
+
+        If the code block being entered is to be ignored, returns `None',
+        else returns self.localtrace.
+        """
+        if why == 'call':
+            code = frame.f_code
+            filename = frame.f_globals.get('__file__', None)
+            if filename:
+                # XXX modname() doesn't work right for packages, so
+                # the ignore support won't work right for packages
+                modulename = modname(filename)
+                if modulename is not None:
+                    ignore_it = self.ignore.names(filename, modulename)
+                    if not ignore_it:
+                        if self.trace:
+                            print (" --- modulename: %s, funcname: %s"
+                                   % (modulename, code.co_name))
+                        return self.localtrace
+            else:
+                return None
+
+    def localtrace_trace_and_count(self, frame, why, arg):
+        if why == "line":
+            # record the file name and line number of every trace
+            filename = frame.f_code.co_filename
+            lineno = frame.f_lineno
+            key = filename, lineno
+            self.counts[key] = self.counts.get(key, 0) + 1
+
+            if self.start_time:
+                print '%.2f' % (time.time() - self.start_time),
+            bname = os.path.basename(filename)
+            print "%s(%d): %s" % (bname, lineno,
+                                  linecache.getline(filename, lineno)),
+        return self.localtrace
+
+    def localtrace_trace(self, frame, why, arg):
+        if why == "line":
+            # record the file name and line number of every trace
+            filename = frame.f_code.co_filename
+            lineno = frame.f_lineno
+
+            if self.start_time:
+                print '%.2f' % (time.time() - self.start_time),
+            bname = os.path.basename(filename)
+            print "%s(%d): %s" % (bname, lineno,
+                                  linecache.getline(filename, lineno)),
+        return self.localtrace
+
+    def localtrace_count(self, frame, why, arg):
+        if why == "line":
+            filename = frame.f_code.co_filename
+            lineno = frame.f_lineno
+            key = filename, lineno
+            self.counts[key] = self.counts.get(key, 0) + 1
+        return self.localtrace
+
+    def results(self):
+        return CoverageResults(self.counts, infile=self.infile,
+                               outfile=self.outfile,
+                               calledfuncs=self._calledfuncs,
+                               callers=self._callers)
+
+def _err_exit(msg):
+    sys.stderr.write("%s: %s\n" % (sys.argv[0], msg))
+    sys.exit(1)
+
+def main(argv=None):
+    import getopt
+
+    if argv is None:
+        argv = sys.argv
+    try:
+        opts, prog_argv = getopt.getopt(argv[1:], "tcrRf:d:msC:lTg",
+                                        ["help", "version", "trace", "count",
+                                         "report", "no-report", "summary",
+                                         "file=", "missing",
+                                         "ignore-module=", "ignore-dir=",
+                                         "coverdir=", "listfuncs",
+                                         "trackcalls", "timing"])
+
+    except getopt.error, msg:
+        sys.stderr.write("%s: %s\n" % (sys.argv[0], msg))
+        sys.stderr.write("Try `%s --help' for more information\n"
+                         % sys.argv[0])
+        sys.exit(1)
+
+    trace = 0
+    count = 0
+    report = 0
+    no_report = 0
+    counts_file = None
+    missing = 0
+    ignore_modules = []
+    ignore_dirs = []
+    coverdir = None
+    summary = 0
+    listfuncs = False
+    countcallers = False
+    timing = False
+
+    for opt, val in opts:
+        if opt == "--help":
+            usage(sys.stdout)
+            sys.exit(0)
+
+        if opt == "--version":
+            sys.stdout.write("trace 2.0\n")
+            sys.exit(0)
+
+        if opt == "-T" or opt == "--trackcalls":
+            countcallers = True
+            continue
+
+        if opt == "-l" or opt == "--listfuncs":
+            listfuncs = True
+            continue
+
+        if opt == "-g" or opt == "--timing":
+            timing = True
+            continue
+
+        if opt == "-t" or opt == "--trace":
+            trace = 1
+            continue
+
+        if opt == "-c" or opt == "--count":
+            count = 1
+            continue
+
+        if opt == "-r" or opt == "--report":
+            report = 1
+            continue
+
+        if opt == "-R" or opt == "--no-report":
+            no_report = 1
+            continue
+
+        if opt == "-f" or opt == "--file":
+            counts_file = val
+            continue
+
+        if opt == "-m" or opt == "--missing":
+            missing = 1
+            continue
+
+        if opt == "-C" or opt == "--coverdir":
+            coverdir = val
+            continue
+
+        if opt == "-s" or opt == "--summary":
+            summary = 1
+            continue
+
+        if opt == "--ignore-module":
+            for mod in val.split(","):
+                ignore_modules.append(mod.strip())
+            continue
+
+        if opt == "--ignore-dir":
+            for s in val.split(os.pathsep):
+                s = os.path.expandvars(s)
+                # should I also call expanduser? (after all, could use $HOME)
+
+                s = s.replace("$prefix",
+                              os.path.join(sys.prefix, "lib",
+                                           "python" + sys.version[:3]))
+                s = s.replace("$exec_prefix",
+                              os.path.join(sys.exec_prefix, "lib",
+                                           "python" + sys.version[:3]))
+                s = os.path.normpath(s)
+                ignore_dirs.append(s)
+            continue
+
+        assert 0, "Should never get here"
+
+    if listfuncs and (count or trace):
+        _err_exit("cannot specify both --listfuncs and (--trace or --count)")
+
+    if not (count or trace or report or listfuncs or countcallers):
+        _err_exit("must specify one of --trace, --count, --report, "
+                  "--listfuncs, or --trackcalls")
+
+    if report and no_report:
+        _err_exit("cannot specify both --report and --no-report")
+
+    if report and not counts_file:
+        _err_exit("--report requires a --file")
+
+    if no_report and len(prog_argv) == 0:
+        _err_exit("missing name of file to run")
+
+    # everything is ready
+    if report:
+        results = CoverageResults(infile=counts_file, outfile=counts_file)
+        results.write_results(missing, summary=summary, coverdir=coverdir)
+    else:
+        sys.argv = prog_argv
+        progname = prog_argv[0]
+        sys.path[0] = os.path.split(progname)[0]
+
+        t = Trace(count, trace, countfuncs=listfuncs,
+                  countcallers=countcallers, ignoremods=ignore_modules,
+                  ignoredirs=ignore_dirs, infile=counts_file,
+                  outfile=counts_file, timing=timing)
+        try:
+            t.run('execfile(%r)' % (progname,))
+        except IOError, err:
+            _err_exit("Cannot run file %r because: %s" % (sys.argv[0], err))
+        except SystemExit:
+            pass
+
+        results = t.results()
+
+        if not no_report:
+            results.write_results(missing, summary=summary, coverdir=coverdir)
+
+if __name__=='__main__':
+    main()