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|
#! /usr/bin/perl
use strict;
use warnings;
my $debug = $ENV{DEBUG};
# This scripts finds DEPRECATEDIN declarations and converts them to
# C declarations with the corresponding OSSL_DEPRECATEDIN attribute
# macro. It also makes sure they are guarded them with a corresponding
# '#ifndef OPENSSL_NO_DEPRECATED', and pays extra attention to only have
# one such guard around a group of deprecations for the same version.
my $parens_re =
qr/(
\( # The start of what we recurse on
(?:
(?> [^()]+ ) # Non-parens, without backtracking
|
(?-1) # Recurse to start of parens group
)*
\) # The end of what we recurse on
)/x;
my $deprecated_kw_re = qr/(DEPRECATEDIN)_(\d+_\d+(?:_\d+)?)/;
my $deprecated_re =
qr/
$deprecated_kw_re
\(
(
(?:
(?> [^()]+ )
|
$parens_re
)*
)
\)
/x;
my $headertext;
{
local $/;
$headertext = <STDIN>;
}
$headertext =~ s/\R/\n/g;
my $cppspaces = '';
my $last_cppspaces = '';
my $currentguard = "";
my $cnt = 0;
while ( $headertext =~ m/(.*?) # $1
( # $2
^
(?|
(\#)(\s*)(if)?.*? # $3 ('#')
# $4 (spaces)
# $5 ('if'?)
|
\s*$deprecated_kw_re\(.*?
# $3 = 'DEPRECATEDIN'
# $4 (vers)
)
\n
)
/msx ) {
my $before = $1;
my $capture = $2;
my $after = $';
my $deprecation = '';
my $test = $capture.$';
my $version = undef;
print STDERR "DEBUG: captured:\n$capture"
if $debug;
if ($3 eq '#') {
# Treat preprocessor lines (count spaces)
$cppspaces = $4;
$cppspaces .= ' ' if (defined $5 && $5 eq 'if');
print STDERR "DEBUG: cpp spaces set to ", length($cppspaces), "\n"
if $debug;
$before .= $capture;
} elsif ($test =~ m/^\s*$deprecated_re(.*?\n)/) {
# Treat DEPRECATEDIN_...
$version = $2;
$deprecation = "OSSL_DEPRECATEDIN_$version $3;$5";
$after = $'; # Different from the previous!
print STDERR "DEBUG: changed to:\n$deprecation\n"
if $debug;
}
if ($currentguard ne ''
&& (defined $version && $currentguard ne $version
|| $before !~ /^\s*$/s)) {
print "#${last_cppspaces}endif\n";
$cppspaces = substr($cppspaces, 0, -1);
$currentguard = "";
}
print $before;
if ($deprecation) {
if ($currentguard eq '' && defined $version) {
$currentguard = $version;
print "#${cppspaces}ifndef OPENSSL_NO_DEPRECATED_$version\n";
$last_cppspaces = $cppspaces;
$cppspaces .= ' ';
print STDERR "DEBUG: cpp spaces set to ", length($cppspaces), "\n"
if $debug;
}
print $deprecation;
}
$headertext = $after;
}
print "#endif\n" if $currentguard ne '';
print $headertext;
|
