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"""
Main program for 2to3.
"""
import sys
import os
import logging
import optparse
from . import refactor
class StdoutRefactoringTool(refactor.RefactoringTool):
"""
Prints output to stdout.
"""
def log_error(self, msg, *args, **kwargs):
self.errors.append((msg, args, kwargs))
self.logger.error(msg, *args, **kwargs)
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("-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")
# Parse command line arguments
refactor_stdin = False
options, args = parser.parse_args(args)
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_names = refactor.get_fixers_from_package(fixer_pkg)
explicit = []
if options.fix:
explicit = [fixer_pkg + ".fix_" + fix
for fix in options.fix if fix != "all"]
fixer_names = avail_names if "all" in options.fix else explicit
else:
fixer_names = avail_names
rt = StdoutRefactoringTool(fixer_names, rt_opts, explicit=explicit)
# 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))
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