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#!/usr/bin/perl -w
######################################################################
#
# Copyright 2002-2024 by Wilson Snyder. This program is free software; you
# can redistribute it and/or modify it under the terms of either the GNU
# Lesser General Public License Version 3 or the Perl Artistic License
# Version 2.0.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
######################################################################
# DESCRIPTION: Edits flex output to get around various broken flex issues.
my $Opt_Prefix = $ARGV[0] or die "%Error: No prefix specified,";
foreach my $line (<STDIN>) {
# Fix flex 2.6.0 warning
$line =~ s/ number_to_move == YY_MORE_ADJ / (int)number_to_move == (int)YY_MORE_ADJ /;
# Fix flex 2.5.4 namespace omission
$line =~ s/^class istream;/\#include <iostream>\nusing namespace std;\n/;
# Fix flex 2.5.31 redefinition
$line =~ s!(\#define\s+yyFlexLexer\s+yyFlexLexer)!//flexfix: $1!g;
# Fix flex 2.5.1 yytext_ptr undef
$line =~ s!(\#undef\s+yytext_ptr)!//flexfix: $1!g;
# Fix flex 2.5.4 and GCC 4.1.0 warn_unused_result
$line =~ s!\(void\) *fwrite\((.*)\)!if (fwrite($1)) {}!g;
# Fix flex 2.5.33 and GCC 4.1.2 "warning: comparison between signed and unsigned integer expressions" in YY_INPUT
$line =~ s!for \( n = 0; n < max_size && !for ( n = 0; ((size_t)n < (size_t)max_size) && !g;
# Fix flex 2.5.4 and GCC 4.0.2 under FLEX_DEBUG
$line =~ s!--accepting rule at line %d !--accepting rule at line %ld !g;
# Fix compiler warning filenames
$line =~ s!(#line \d+ ".*)_pretmp!$1!;
print "$line";
}
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