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executable file 79 lines (65 sloc) 2.663 kB
#!/usr/bin/env perl
# fix-cxx-comments.pl
# Copyright (c) 2008, Daniel Richard G. <skunk(at)iskunk(dot)org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of the author nor the names of
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
use strict;
use warnings;
sub xform($$$)
{
my ($a, $b, $c) = @_;
$a =~ s!///!/**!;
$b =~ s!(\a\s*)///!$1 **!g;
$c =~ s!///! **!;
$a =~ s!//!/*!;
$b =~ s!(\a\s*)//!$1 *!g;
$c =~ s!//! *!;
$c .= ' */';
return $a . $b . $c . "\a";
}
sub fix_cxx_comments()
{
s/\r//g; # This is Unix, not DOS
s/[\t ]+$//g; # Remove trailing whitespace
s/\n/\a/g; # Convert file to single line
# Process multi-line comments:
# $1 = first line of comment, $3 = last line, $2 = lines in between
s! (\a\s*//[^\a]*) ((?:\a\s*//[^\a]*)*) (\a\s*//[^\a]*)\a !xform($1,$2,$3)!egx;
# Process /// single-line comments
s! (\a\s*)///(\s?)([^\a]*)\a !$1/**$2$3$2*/\a!gx;
s! (\s+)///(\s?)([^\a]*)\a !$1/**$2$3$2*/\a!gx;
# Process // single-line comments
s! (\a\s*)//(\s?)([^\a]*)\a !$1/*$2$3$2*/\a!gx;
s! (\s+)//(\s?)([^\a]*)\a !$1/*$2$3$2*/\a!gx;
s/\a/\n/g; # Convert back to multiple lines
}
{
local $/;
$_ = <>;
fix_cxx_comments();
print;
}
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