131 lines
4.7 KiB
Python
131 lines
4.7 KiB
Python
"""
|
|
Main program for 2to3.
|
|
"""
|
|
|
|
import sys
|
|
import os
|
|
import logging
|
|
import optparse
|
|
|
|
from . import refactor
|
|
|
|
|
|
class StdoutRefactoringTool(refactor.RefactoringTool):
|
|
"""
|
|
Prints output to stdout.
|
|
"""
|
|
|
|
def __init__(self, fixers, options, explicit, nobackups):
|
|
self.nobackups = nobackups
|
|
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):
|
|
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
|
|
super(StdoutRefactoringTool, self).write_file(new_text,
|
|
filename, old_text)
|
|
|
|
def print_output(self, lines):
|
|
for line in lines:
|
|
print line
|
|
|
|
|
|
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="refactor.py [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("-x", "--nofix", action="append", default=[],
|
|
help="Prevent a fixer from being run.")
|
|
parser.add_option("-l", "--list-fixes", action="store_true",
|
|
help="List available transformations (fixes/fix_*.py)")
|
|
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("-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.")
|
|
|
|
# Parse command line arguments
|
|
refactor_stdin = False
|
|
options, args = parser.parse_args(args)
|
|
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
|
|
|
|
# Set up logging handler
|
|
level = logging.DEBUG if options.verbose else logging.INFO
|
|
logging.basicConfig(format='%(name)s: %(message)s', level=level)
|
|
|
|
# Initialize the refactoring tool
|
|
rt_opts = {"print_function" : options.print_function}
|
|
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)
|
|
rt = StdoutRefactoringTool(sorted(fixer_names), rt_opts, sorted(explicit),
|
|
options.nobackups)
|
|
|
|
# Refactor all files and directories passed as arguments
|
|
if not rt.errors:
|
|
if refactor_stdin:
|
|
rt.refactor_stdin()
|
|
else:
|
|
rt.refactor(args, options.write, options.doctests_only)
|
|
rt.summarize()
|
|
|
|
# Return error status (0 if rt.errors is zero)
|
|
return int(bool(rt.errors))
|