print O @_ or die "error writing $writing_output.tmp: $!\n";
}
-sub od { # maybe $-doubled
+sub oud { # undoubled
if (defined $buffering_output) {
$buffering_output .= $_ foreach @_;
return;
oraw @_;
}
+our $ddbl;
+
+sub od { # maybe $-doubled
+ if (!$ddbl) {
+ oud @_;
+ return;
+ }
+ foreach (@_) {
+ my $e = $_;
+ $e =~ s{\$}{\$\$}g;
+ oud $e;
+ }
+}
+
sub start_output_file ($) {
close_any_output_file();
($writing_output) = @_;
);
$pfxmap{$_} = $srcdirmap{$_}.'/' foreach keys %srcdirmap;
+ local $ddbl;
+ my @nest;
+
+ my $push_nest = sub {
+ my ($nk, $nndbl) = @_;
+ unshift @nest, [ $nk, $ddbl ];
+ $ddbl = $nndbl;
+ };
+ my $pop_nest = sub {
+ my ($nk) = @_;
+ die unless $nest[0][0] eq $nk;
+ $ddbl = (shift @nest)[1];
+ };
+
while (<$input>) {
if (s#^\s*$esc\:changequote\s+(\S+)\s+$##) {
$$esclitr = $1;
$set_esc->();
next;
- } elsif (s#^\s*$esc\:(?=(-?)include)##) {
+ } elsif (s#^\s*$esc\:endm\s+$##) {
+ $pop_nest->('Macro');
+ od "endef\n";
+ next;
+ } elsif (s#^\s*$esc\:(?=(-?)include|macro)##) {
$buffering_output='';
} elsif (m#^\s*$esc\:([a-z][-0-9a-z_]*)#) {
die "unknown directive $1";
$targets->{$t} //= [ ];
}
for (;;) {
- unless (s{^(.*?)$esc}{}) { od $_; last; }
+ die if $ddbl && defined $buffering_output;
+ unless (@nest && $nest[0][0] eq 'Eval'
+ ? s{^(.*?)($esc|[{}])}{}
+ : s{^(.*?)($esc)}{}) { od $_; last; }
od $1;
+ if ($2 eq '{') {
+ $ddbl++;
+ next;
+ } elsif ($2 eq '}') {
+ next if --$ddbl;
+ $pop_nest->('Eval');
+ od '}}';
+ next;
+ }
if (s{^\\$esc}{}) { od "$$esclitr" }
- elsif (s{^\\\$}{}) { od '$' }
+ elsif (s{^\\\$}{}) { oud '$' }
elsif (s{^\\\s+$}{}) { }
elsif (s{^$esc}{}) { od "$$esclitr$$esclitr" }
elsif (m{^(?=$caps_re)}) { od $var_prefix }
elsif (s{^([~^]?)/}{}) { od $pfxmap{$1} }
elsif (s{^\.}{}) { od $dir_name }
elsif (s{^([~^])\.}{}) { od $srcdirmap{$1} }
- elsif (s{^([~^]?)(?=[ \t])}{}) {
+ elsif (s{^\$\-}{}) { $ddbl=undef; }
+ elsif (s{^\$\+}{}) { $ddbl=1; }
+ elsif (s{^\$\(}{}) { die unless $ddbl; oud "\$("; }
+ elsif (s{^\$(\d+)}{}) { die unless $ddbl; oud "\$($1)"; }
+ elsif (s{^\$\{}{}) {
+ die if $ddbl;
+ od '${eval ${call ';
+ $push_nest->('Eval',1);
+ } elsif (s{^([~^]?)(?=[ \t])}{}) {
my $prefix = $pfxmap{$1} // die;
my $after='';
if (m{([ \t])$esc}) { ($_,$after) = ($`, $1.$'); }
my $subf = "$srcdir/$2";
process_input_mk($targets, $subf, $esclitr, $1);
od "\n";
+ } elsif (m#^macro\s+(\S+)\s+$#) {
+ od "define $1\n";
+ $push_nest->('Macro', 1);
} else {
die "internal error buffering directive $_ ";
}