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prod/doc/hmac.pl: allow self-referential macros (not general recursion)

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This commit is contained in:
Werner Almesberger 2011-05-27 12:40:22 -03:00
parent 838b8e1ace
commit 2386f1f7b5
1 changed files with 13 additions and 4 deletions
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17
prod/doc/hmac.pl
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@ -198,7 +198,8 @@ sub define_macro
die "NAME parameter is missing" unless defined $name;
$d =~ s/$BM/<MACRO/gi;
$d =~ s|$EM|</MACRO>|gi;
$mac{$name} = $d;
# $mac{$name} = $d;
$mac{$name} = &expand_macro_list($d, $name);
$args{$name} = { %arg };
}
else {
@ -214,14 +215,14 @@ sub define_macro
# Expand first macro
#
sub expand_macro
sub expand_macro_list
{
local ($in) = @_;
local ($in, @mac) = @_;
local ($a,$b,$c);
local ($mac, $done, $prm, %arg);
undef $a;
for $mac (keys %mac) {
for $mac (@mac) {
if ($in =~ /<$mac\b(("[^"]*"|[^>])*)>/is) {
($a,$b,$c) = ($`,$1,$') if length $` < length $a || !defined $a;
}
@ -259,3 +260,11 @@ sub expand_macro
}
return $in;
}
sub expand_macro
{
local ($in) = @_;
return &expand_macro_list($in, keys %mac);
}