152 lines
3.8 KiB
Perl
152 lines
3.8 KiB
Perl
#!/usr/bin/perl
|
|
|
|
# Transform K&R C function definitions into ANSI equivalent.
|
|
#
|
|
# Author: Paul Marquess
|
|
# Version: 1.0
|
|
# Date: 3 October 2006
|
|
|
|
# TODO
|
|
#
|
|
# Asumes no function pointer parameters. unless they are typedefed.
|
|
# Assumes no literal strings that look like function definitions
|
|
# Assumes functions start at the beginning of a line
|
|
|
|
use strict;
|
|
use warnings;
|
|
|
|
local $/;
|
|
$_ = <>;
|
|
|
|
my $sp = qr{ \s* (?: /\* .*? \*/ )? \s* }x; # assume no nested comments
|
|
|
|
my $d1 = qr{ $sp (?: [\w\*\s]+ $sp)* $sp \w+ $sp [\[\]\s]* $sp }x ;
|
|
my $decl = qr{ $sp (?: \w+ $sp )+ $d1 }xo ;
|
|
my $dList = qr{ $sp $decl (?: $sp , $d1 )* $sp ; $sp }xo ;
|
|
|
|
|
|
while (s/^
|
|
( # Start $1
|
|
( # Start $2
|
|
.*? # Minimal eat content
|
|
( ^ \w [\w\s\*]+ ) # $3 -- function name
|
|
\s* # optional whitespace
|
|
) # $2 - Matched up to before parameter list
|
|
|
|
\( \s* # Literal "(" + optional whitespace
|
|
( [^\)]+ ) # $4 - one or more anythings except ")"
|
|
\s* \) # optional whitespace surrounding a Literal ")"
|
|
|
|
( (?: $dList )+ ) # $5
|
|
|
|
$sp ^ { # literal "{" at start of line
|
|
) # Remember to $1
|
|
//xsom
|
|
)
|
|
{
|
|
my $all = $1 ;
|
|
my $prefix = $2;
|
|
my $param_list = $4 ;
|
|
my $params = $5;
|
|
|
|
StripComments($params);
|
|
StripComments($param_list);
|
|
$param_list =~ s/^\s+//;
|
|
$param_list =~ s/\s+$//;
|
|
|
|
my $i = 0 ;
|
|
my %pList = map { $_ => $i++ }
|
|
split /\s*,\s*/, $param_list;
|
|
my $pMatch = '(\b' . join('|', keys %pList) . '\b)\W*$' ;
|
|
|
|
my @params = split /\s*;\s*/, $params;
|
|
my @outParams = ();
|
|
foreach my $p (@params)
|
|
{
|
|
if ($p =~ /,/)
|
|
{
|
|
my @bits = split /\s*,\s*/, $p;
|
|
my $first = shift @bits;
|
|
$first =~ s/^\s*//;
|
|
push @outParams, $first;
|
|
$first =~ /^(\w+\s*)/;
|
|
my $type = $1 ;
|
|
push @outParams, map { $type . $_ } @bits;
|
|
}
|
|
else
|
|
{
|
|
$p =~ s/^\s+//;
|
|
push @outParams, $p;
|
|
}
|
|
}
|
|
|
|
|
|
my %tmp = map { /$pMatch/; $_ => $pList{$1} }
|
|
@outParams ;
|
|
|
|
@outParams = map { " $_" }
|
|
sort { $tmp{$a} <=> $tmp{$b} }
|
|
@outParams ;
|
|
|
|
print $prefix ;
|
|
print "(\n" . join(",\n", @outParams) . ")\n";
|
|
print "{" ;
|
|
|
|
}
|
|
|
|
# Output any trailing code.
|
|
print ;
|
|
exit 0;
|
|
|
|
|
|
sub StripComments
|
|
{
|
|
|
|
no warnings;
|
|
|
|
# Strip C & C++ coments
|
|
# From the perlfaq
|
|
$_[0] =~
|
|
|
|
s{
|
|
/\* ## Start of /* ... */ comment
|
|
[^*]*\*+ ## Non-* followed by 1-or-more *'s
|
|
(
|
|
[^/*][^*]*\*+
|
|
)* ## 0-or-more things which don't start with /
|
|
## but do end with '*'
|
|
/ ## End of /* ... */ comment
|
|
|
|
| ## OR C++ Comment
|
|
// ## Start of C++ comment //
|
|
[^\n]* ## followed by 0-or-more non end of line characters
|
|
|
|
| ## OR various things which aren't comments:
|
|
|
|
(
|
|
" ## Start of " ... " string
|
|
(
|
|
\\. ## Escaped char
|
|
| ## OR
|
|
[^"\\] ## Non "\
|
|
)*
|
|
" ## End of " ... " string
|
|
|
|
| ## OR
|
|
|
|
' ## Start of ' ... ' string
|
|
(
|
|
\\. ## Escaped char
|
|
| ## OR
|
|
[^'\\] ## Non '\
|
|
)*
|
|
' ## End of ' ... ' string
|
|
|
|
| ## OR
|
|
|
|
. ## Anything other char
|
|
[^/"'\\]* ## Chars which doesn't start a comment, string or escape
|
|
)
|
|
}{$2}gxs;
|
|
|
|
}
|