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Diffstat (limited to 'Tools/scripts/classfix.py')
| -rwxr-xr-x | Tools/scripts/classfix.py | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/Tools/scripts/classfix.py b/Tools/scripts/classfix.py deleted file mode 100755 index 971d1bd..0000000 --- a/Tools/scripts/classfix.py +++ /dev/null @@ -1,190 +0,0 @@ -#! /usr/bin/env python3 - -# This script is obsolete -- it is kept for historical purposes only. -# -# Fix Python source files to use the new class definition syntax, i.e., -# the syntax used in Python versions before 0.9.8: -# class C() = base(), base(), ...: ... -# is changed to the current syntax: -# class C(base, base, ...): ... -# -# The script uses heuristics to find class definitions that usually -# work but occasionally can fail; carefully check the output! -# -# Command line arguments are files or directories to be processed. -# Directories are searched recursively for files whose name looks -# like a python module. -# Symbolic links are always ignored (except as explicit directory -# arguments). Of course, the original file is kept as a back-up -# (with a "~" attached to its name). -# -# Changes made are reported to stdout in a diff-like format. -# -# Undoubtedly you can do this using find and sed or perl, but this is -# a nice example of Python code that recurses down a directory tree -# and uses regular expressions. Also note several subtleties like -# preserving the file's mode and avoiding to even write a temp file -# when no changes are needed for a file. -# -# NB: by changing only the function fixline() you can turn this -# into a program for a different change to Python programs... - -import sys -import re -import os -from stat import * - -err = sys.stderr.write -dbg = err -rep = sys.stdout.write - -def main(): - bad = 0 - if not sys.argv[1:]: # No arguments - err('usage: ' + sys.argv[0] + ' file-or-directory ...\n') - sys.exit(2) - for arg in sys.argv[1:]: - if os.path.isdir(arg): - if recursedown(arg): bad = 1 - elif os.path.islink(arg): - err(arg + ': will not process symbolic links\n') - bad = 1 - else: - if fix(arg): bad = 1 - sys.exit(bad) - -ispythonprog = re.compile('^[a-zA-Z0-9_]+\.py$') -def ispython(name): - return ispythonprog.match(name) >= 0 - -def recursedown(dirname): - dbg('recursedown(%r)\n' % (dirname,)) - bad = 0 - try: - names = os.listdir(dirname) - except os.error as msg: - err('%s: cannot list directory: %r\n' % (dirname, msg)) - return 1 - names.sort() - subdirs = [] - for name in names: - if name in (os.curdir, os.pardir): continue - fullname = os.path.join(dirname, name) - if os.path.islink(fullname): pass - elif os.path.isdir(fullname): - subdirs.append(fullname) - elif ispython(name): - if fix(fullname): bad = 1 - for fullname in subdirs: - if recursedown(fullname): bad = 1 - return bad - -def fix(filename): -## dbg('fix(%r)\n' % (filename,)) - try: - f = open(filename, 'r') - except IOError as msg: - err('%s: cannot open: %r\n' % (filename, msg)) - return 1 - head, tail = os.path.split(filename) - tempname = os.path.join(head, '@' + tail) - g = None - # If we find a match, we rewind the file and start over but - # now copy everything to a temp file. - lineno = 0 - while 1: - line = f.readline() - if not line: break - lineno = lineno + 1 - while line[-2:] == '\\\n': - nextline = f.readline() - if not nextline: break - line = line + nextline - lineno = lineno + 1 - newline = fixline(line) - if newline != line: - if g is None: - try: - g = open(tempname, 'w') - except IOError as msg: - f.close() - err('%s: cannot create: %r\n' % (tempname, msg)) - return 1 - f.seek(0) - lineno = 0 - rep(filename + ':\n') - continue # restart from the beginning - rep(repr(lineno) + '\n') - rep('< ' + line) - rep('> ' + newline) - if g is not None: - g.write(newline) - - # End of file - f.close() - if not g: return 0 # No changes - - # Finishing touch -- move files - - # First copy the file's mode to the temp file - try: - statbuf = os.stat(filename) - os.chmod(tempname, statbuf[ST_MODE] & 0o7777) - except os.error as msg: - err('%s: warning: chmod failed (%r)\n' % (tempname, msg)) - # Then make a backup of the original file as filename~ - try: - os.rename(filename, filename + '~') - except os.error as msg: - err('%s: warning: backup failed (%r)\n' % (filename, msg)) - # Now move the temp file to the original file - try: - os.rename(tempname, filename) - except os.error as msg: - err('%s: rename failed (%r)\n' % (filename, msg)) - return 1 - # Return succes - return 0 - -# This expression doesn't catch *all* class definition headers, -# but it's pretty darn close. -classexpr = '^([ \t]*class +[a-zA-Z0-9_]+) *( *) *((=.*)?):' -classprog = re.compile(classexpr) - -# Expressions for finding base class expressions. -baseexpr = '^ *(.*) *( *) *$' -baseprog = re.compile(baseexpr) - -def fixline(line): - if classprog.match(line) < 0: # No 'class' keyword -- no change - return line - - (a0, b0), (a1, b1), (a2, b2) = classprog.regs[:3] - # a0, b0 = Whole match (up to ':') - # a1, b1 = First subexpression (up to classname) - # a2, b2 = Second subexpression (=.*) - head = line[:b1] - tail = line[b0:] # Unmatched rest of line - - if a2 == b2: # No base classes -- easy case - return head + ':' + tail - - # Get rid of leading '=' - basepart = line[a2+1:b2] - - # Extract list of base expressions - bases = basepart.split(',') - - # Strip trailing '()' from each base expression - for i in range(len(bases)): - if baseprog.match(bases[i]) >= 0: - x1, y1 = baseprog.regs[1] - bases[i] = bases[i][x1:y1] - - # Join the bases back again and build the new line - basepart = ', '.join(bases) - - return head + '(' + basepart + '):' + tail - -if __name__ == '__main__': - main() |