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#!/usr/bin/env python
#===- replace.py - Applying code rewrites --------------------*- python -*--===#
#
# The LLVM Compiler Infrastructure
#
# This file is distributed under the University of Illinois Open Source
# License. See LICENSE.TXT for details.
#
#===------------------------------------------------------------------------===#
#
# This script applies the rewrites generated by replace-cstr-calls on a source
# tree.
#
# Usage:
# ./replace.py < /path/to/replace-cstr-calls-output
#
#===------------------------------------------------------------------------===#
import fileinput
import re
import sys
for line in sys.stdin.readlines():
# The format is:
# <file>:<start_line>:<start_column>:<end_line>:<end_column>:<replacement>
# FIXME: This currently does not support files with colons, we'll need to
# figure out a format when we implement more refactoring support.
match = re.match(r'(.*):(\d+):(\d+):(\d+):(\d+):(.*)$', line)
if match is not None:
file_name = match.group(1)
start_line, start_column = int(match.group(2)), int(match.group(3))
end_line, end_column = int(match.group(4)), int(match.group(5))
replacement = match.group(6)
if start_line != end_line:
print ('Skipping match "%s": only single line ' +
'replacements are supported') % line.strip()
continue
try:
replace_file = fileinput.input(file_name, inplace=1)
for replace_line in replace_file:
# FIXME: Looping over the file for each replacement is both inefficient
# and incorrect if replacements add or remove lines.
if replace_file.lineno() == start_line:
sys.stdout.write(replace_line[:start_column-1] + replacement +
replace_line[end_column:])
else:
sys.stdout.write(replace_line)
except OSError, e:
print 'Cannot open %s for editing' % file_name
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