FM / lib2to3

/usr/lib64/python2.7/lib2to3

Name	Size	Mode	Actions
fixes/	-	0755	rm
pgen2/	-	0755	rm
btm_matcher.py	6834	0644	edit dl rm
btm_matcher.pyc	5830	0644	edit dl rm
btm_matcher.pyo	5830	0644	edit dl rm
btm_utils.py	10012	0644	edit dl rm
btm_utils.pyc	7563	0644	edit dl rm
btm_utils.pyo	7563	0644	edit dl rm
fixer_base.py	6780	0644	edit dl rm
fixer_base.pyc	7186	0644	edit dl rm
fixer_base.pyo	7186	0644	edit dl rm
fixer_util.py	14597	0644	edit dl rm
fixer_util.pyc	14683	0644	edit dl rm
fixer_util.pyo	14683	0644	edit dl rm
Grammar.txt	7094	0644	edit dl rm
Grammar2.7.18.final.0.pickle	40486	0644	edit dl rm
main.py	11605	0644	edit dl rm
main.pyc	9831	0644	edit dl rm
main.pyo	9789	0644	edit dl rm
patcomp.py	7065	0644	edit dl rm
patcomp.pyc	6601	0644	edit dl rm
patcomp.pyo	6289	0644	edit dl rm
PatternGrammar.txt	793	0644	edit dl rm
PatternGrammar2.7.18.final.0.pickle	2799	0644	edit dl rm
pygram.py	1158	0644	edit dl rm
pygram.pyc	1441	0644	edit dl rm
pygram.pyo	1441	0644	edit dl rm
pytree.py	29039	0644	edit dl rm
pytree.pyc	30303	0644	edit dl rm
pytree.pyo	29420	0644	edit dl rm
refactor.py	28026	0644	edit dl rm
refactor.pyc	23912	0644	edit dl rm
refactor.pyo	23870	0644	edit dl rm
__init__.py	7	0644	edit dl rm
__init__.pyc	127	0644	edit dl rm
__init__.pyo	127	0644	edit dl rm
__main__.py	67	0644	edit dl rm
__main__.pyc	242	0644	edit dl rm
__main__.pyo	242	0644	edit dl rm

Edit: /usr/lib64/python2.7/lib2to3/main.py (11605B)

"""
Main program for 2to3.
"""

from __future__ import with_statement

import sys
import os
import difflib
import logging
import shutil
import optparse

from . import refactor

def diff_texts(a, b, filename):
    """Return a unified diff of two strings."""
    a = a.splitlines()
    b = b.splitlines()
    return difflib.unified_diff(a, b, filename, filename,
                                "(original)", "(refactored)",
                                lineterm="")

class StdoutRefactoringTool(refactor.MultiprocessRefactoringTool):
    """
    A refactoring tool that can avoid overwriting its input files.
    Prints output to stdout.

Output files can optionally be written to a different directory and or
    have an extra file suffix appended to their name for use in situations
    where you do not want to replace the input files.
    """

def __init__(self, fixers, options, explicit, nobackups, show_diffs,
                 input_base_dir='', output_dir='', append_suffix=''):
        """
        Args:
            fixers: A list of fixers to import.
            options: A dict with RefactoringTool configuration.
            explicit: A list of fixers to run even if they are explicit.
            nobackups: If true no backup '.bak' files will be created for those
                files that are being refactored.
            show_diffs: Should diffs of the refactoring be printed to stdout?
            input_base_dir: The base directory for all input files.  This class
                will strip this path prefix off of filenames before substituting
                it with output_dir.  Only meaningful if output_dir is supplied.
                All files processed by refactor() must start with this path.
            output_dir: If supplied, all converted files will be written into
                this directory tree instead of input_base_dir.
            append_suffix: If supplied, all files output by this tool will have
                this appended to their filename.  Useful for changing .py to
                .py3 for example by passing append_suffix='3'.
        """
        self.nobackups = nobackups
        self.show_diffs = show_diffs
        if input_base_dir and not input_base_dir.endswith(os.sep):
            input_base_dir += os.sep
        self._input_base_dir = input_base_dir
        self._output_dir = output_dir
        self._append_suffix = append_suffix
        super(StdoutRefactoringTool, self).__init__(fixers, options, explicit)

def log_error(self, msg, *args, **kwargs):
        self.errors.append((msg, args, kwargs))
        self.logger.error(msg, *args, **kwargs)

def write_file(self, new_text, filename, old_text, encoding):
        orig_filename = filename
        if self._output_dir:
            if filename.startswith(self._input_base_dir):
                filename = os.path.join(self._output_dir,
                                        filename[len(self._input_base_dir):])
            else:
                raise ValueError('filename %s does not start with the '
                                 'input_base_dir %s' % (
                                         filename, self._input_base_dir))
        if self._append_suffix:
            filename += self._append_suffix
        if orig_filename != filename:
            output_dir = os.path.dirname(filename)
            if not os.path.isdir(output_dir):
                os.makedirs(output_dir)
            self.log_message('Writing converted %s to %s.', orig_filename,
                             filename)
        if not self.nobackups:
            # Make backup
            backup = filename + ".bak"
            if os.path.lexists(backup):
                try:
                    os.remove(backup)
                except os.error, err:
                    self.log_message("Can't remove backup %s", backup)
            try:
                os.rename(filename, backup)
            except os.error, err:
                self.log_message("Can't rename %s to %s", filename, backup)
        # Actually write the new file
        write = super(StdoutRefactoringTool, self).write_file
        write(new_text, filename, old_text, encoding)
        if not self.nobackups:
            shutil.copymode(backup, filename)
        if orig_filename != filename:
            # Preserve the file mode in the new output directory.
            shutil.copymode(orig_filename, filename)

def print_output(self, old, new, filename, equal):
        if equal:
            self.log_message("No changes to %s", filename)
        else:
            self.log_message("Refactored %s", filename)
            if self.show_diffs:
                diff_lines = diff_texts(old, new, filename)
                try:
                    if self.output_lock is not None:
                        with self.output_lock:
                            for line in diff_lines:
                                print line
                            sys.stdout.flush()
                    else:
                        for line in diff_lines:
                            print line
                except UnicodeEncodeError:
                    warn("couldn't encode %s's diff for your terminal" %
                         (filename,))
                    return

def warn(msg):
    print >> sys.stderr, "WARNING: %s" % (msg,)

def main(fixer_pkg, args=None):
    """Main program.

Args:
        fixer_pkg: the name of a package where the fixers are located.
        args: optional; a list of command line arguments. If omitted,
              sys.argv[1:] is used.

Returns a suggested exit status (0, 1, 2).
    """
    # Set up option parser
    parser = optparse.OptionParser(usage="2to3 [options] file|dir ...")
    parser.add_option("-d", "--doctests_only", action="store_true",
                      help="Fix up doctests only")
    parser.add_option("-f", "--fix", action="append", default=[],
                      help="Each FIX specifies a transformation; default: all")
    parser.add_option("-j", "--processes", action="store", default=1,
                      type="int", help="Run 2to3 concurrently")
    parser.add_option("-x", "--nofix", action="append", default=[],
                      help="Prevent a transformation from being run")
    parser.add_option("-l", "--list-fixes", action="store_true",
                      help="List available transformations")
    parser.add_option("-p", "--print-function", action="store_true",
                      help="Modify the grammar so that print() is a function")
    parser.add_option("-v", "--verbose", action="store_true",
                      help="More verbose logging")
    parser.add_option("--no-diffs", action="store_true",
                      help="Don't show diffs of the refactoring")
    parser.add_option("-w", "--write", action="store_true",
                      help="Write back modified files")
    parser.add_option("-n", "--nobackups", action="store_true", default=False,
                      help="Don't write backups for modified files")
    parser.add_option("-o", "--output-dir", action="store", type="str",
                      default="", help="Put output files in this directory "
                      "instead of overwriting the input files.  Requires -n.")
    parser.add_option("-W", "--write-unchanged-files", action="store_true",
                      help="Also write files even if no changes were required"
                      " (useful with --output-dir); implies -w.")
    parser.add_option("--add-suffix", action="store", type="str", default="",
                      help="Append this string to all output filenames."
                      " Requires -n if non-empty.  "
                      "ex: --add-suffix='3' will generate .py3 files.")

# Parse command line arguments
    refactor_stdin = False
    flags = {}
    options, args = parser.parse_args(args)
    if options.write_unchanged_files:
        flags["write_unchanged_files"] = True
        if not options.write:
            warn("--write-unchanged-files/-W implies -w.")
        options.write = True
    # If we allowed these, the original files would be renamed to backup names
    # but not replaced.
    if options.output_dir and not options.nobackups:
        parser.error("Can't use --output-dir/-o without -n.")
    if options.add_suffix and not options.nobackups:
        parser.error("Can't use --add-suffix without -n.")

if not options.write and options.no_diffs:
        warn("not writing files and not printing diffs; that's not very useful")
    if not options.write and options.nobackups:
        parser.error("Can't use -n without -w")
    if options.list_fixes:
        print "Available transformations for the -f/--fix option:"
        for fixname in refactor.get_all_fix_names(fixer_pkg):
            print fixname
        if not args:
            return 0
    if not args:
        print >> sys.stderr, "At least one file or directory argument required."
        print >> sys.stderr, "Use --help to show usage."
        return 2
    if "-" in args:
        refactor_stdin = True
        if options.write:
            print >> sys.stderr, "Can't write to stdin."
            return 2
    if options.print_function:
        flags["print_function"] = True

# Set up logging handler
    level = logging.DEBUG if options.verbose else logging.INFO
    logging.basicConfig(format='%(name)s: %(message)s', level=level)
    logger = logging.getLogger('lib2to3.main')

# Initialize the refactoring tool
    avail_fixes = set(refactor.get_fixers_from_package(fixer_pkg))
    unwanted_fixes = set(fixer_pkg + ".fix_" + fix for fix in options.nofix)
    explicit = set()
    if options.fix:
        all_present = False
        for fix in options.fix:
            if fix == "all":
                all_present = True
            else:
                explicit.add(fixer_pkg + ".fix_" + fix)
        requested = avail_fixes.union(explicit) if all_present else explicit
    else:
        requested = avail_fixes.union(explicit)
    fixer_names = requested.difference(unwanted_fixes)
    input_base_dir = os.path.commonprefix(args)
    if (input_base_dir and not input_base_dir.endswith(os.sep)
        and not os.path.isdir(input_base_dir)):
        # One or more similar names were passed, their directory is the base.
        # os.path.commonprefix() is ignorant of path elements, this corrects
        # for that weird API.
        input_base_dir = os.path.dirname(input_base_dir)
    if options.output_dir:
        input_base_dir = input_base_dir.rstrip(os.sep)
        logger.info('Output in %r will mirror the input directory %r layout.',
                    options.output_dir, input_base_dir)
    rt = StdoutRefactoringTool(
            sorted(fixer_names), flags, sorted(explicit),
            options.nobackups, not options.no_diffs,
            input_base_dir=input_base_dir,
            output_dir=options.output_dir,
            append_suffix=options.add_suffix)

# Refactor all files and directories passed as arguments
    if not rt.errors:
        if refactor_stdin:
            rt.refactor_stdin()
        else:
            try:
                rt.refactor(args, options.write, options.doctests_only,
                            options.processes)
            except refactor.MultiprocessingUnsupported:
                assert options.processes > 1
                print >> sys.stderr, "Sorry, -j isn't " \
                    "supported on this platform."
                return 1
        rt.summarize()

# Return error status (0 if rt.errors is zero)
    return int(bool(rt.errors))

cmd: