-# Hideous stuff
-use vars qw( $re_directive );
-BEGIN {
- # $re_directive must not do any backreferences
- $re_directive = q{<(?:(?i)(?:!--\s*)?\/?TMPL_(?:VAR|LOOP|INCLUDE|IF|ELSE|UNLESS)\b(?:\s+(?:[a-zA-Z][-a-zA-Z0-9]*=)?(?:'[^']*'|"[^"]*"|[^\s<>]+))\s*(?:--)?)>};
-}
-
-# Hideous stuff from subst.pl, slightly modified to use the above hideous stuff
-# Note: The $re_tag's set $1 (<tag), $2 (>), and $3 (rest of string)
-use vars qw( $re_comment $re_entity_name $re_end_entity $re_etag );
-use vars qw( $re_tag_strict $re_tag_compat @re_tag );
-sub re_tag ($) {
- my($compat) = @_;
- my $etag = $compat? '>': '<>\/';
- # See the file "subst.pl.test1" for how the following mess is derived
- # Unfortunately, inserting $re_directive's has made this even messier
- q{(<\/?(?:|(?:"(?:} . $re_directive . q{|[^"])*"|'(?:} . $re_directive . q{|[^'])*'|--(?:[^-]|-[^-])*--|(?:} . $re_directive . q{|[^-"'} . $etag . q{]|-[^-]))+))([} . $etag . q{])(.*)};
-}
-BEGIN {
- $re_comment = '(?:--(?:[^-]|-[^-])*--)';
- $re_entity_name = '(?:[^&%#;<>\s]+)'; # NOTE: not really correct SGML
- $re_end_entity = '(?:;|$|(?=\s))'; # semicolon or before-whitespace
- $re_etag = q{(?:<\/?(?:"[^"]*"|'[^']*'|[^"'>\/])*[>\/])}; # end-tag
- @re_tag = ($re_tag_strict, $re_tag_compat) = (re_tag(0), re_tag(1));
-}
-
-# End of the hideous stuff
-
-sub KIND_TEXT () { 'TEXT' }
-sub KIND_CDATA () { 'CDATA' }
-sub KIND_TAG () { 'TAG' }
-sub KIND_DECL () { 'DECL' }
-sub KIND_PI () { 'PI' }
-sub KIND_DIRECTIVE () { 'HTML::Template' }
-sub KIND_COMMENT () { 'COMMENT' } # empty DECL with exactly one SGML comment
-sub KIND_UNKNOWN () { 'ERROR' }
-
-use vars qw( $readahead $lc_0 $lc $syntaxerror_p );
-use vars qw( $cdata_mode_p $cdata_close );
-
-sub extract_attributes ($;$) {
- my($s, $lc) = @_;
- my %attr;
- $s = $1 if $s =~ /^<\S+(.*)\S$/s; # should be always true
- for (my $i = 0; $s =~ /^\s+(?:([a-zA-Z][-a-zA-Z0-9]*)=)?('((?:$re_directive|[^'])*)'|"((?:$re_directive|[^"])*)"|(($re_directive|[^\s<>])+))/os;) {
- my($key, $val, $val_orig, $rest)
- = ($1, (defined $3? $3: defined $4? $4: $5), $2, $');
- $i += 1;
- $attr{+lc($key)} = [$key, $val, $val_orig, $i];
- $s = $rest;
- }
- if ($s =~ /\S/s) { # should never happen
- warn "Warning: Strange attribute syntax"
- . (defined $lc? " in line $lc": '') . ": $s\n";
- } else {
- }
- return \%attr;
-}
-
-sub next_token_internal (*) {
- my($h) = @_;
- my($it, $kind);
- my $eof_p = 0;
- if (!defined $readahead || !length $readahead) {
- my $next = scalar <$h>;
- $eof_p = !defined $next;
- if (!$eof_p) {
- $lc += 1;
- $readahead .= $next;
- }
- }
- $lc_0 = $lc; # remember line number of first line
- if ($eof_p && !length $readahead) { # nothing left to do
- ;
- } elsif ($readahead =~ /^\s+/s) { # whitespace
- ($kind, $it, $readahead) = (KIND_TEXT, $&, $');
- # FIXME the following (the [<\s] part) is an unreliable HACK :-(
- } elsif ($readahead =~ /^(?:[^<]|<[<\s])+/s) { # non-space normal text
- ($kind, $it, $readahead) = (KIND_TEXT, $&, $');
- warn "Warning: Unescaped < in line $lc: $it\n" if $it =~ /</s;
- } else { # tag/declaration/processing instruction
- my $ok_p = 0;
- for (;;) {
- if ($cdata_mode_p) {
- if ($readahead =~ /^$cdata_close/) {
- ($kind, $it, $readahead) = (KIND_TAG, $&, $');
- $ok_p = 1;
- } else {
- ($kind, $it, $readahead) = (KIND_TEXT, $readahead, undef);
- $ok_p = 1;
- }
- } elsif ($readahead =~ /^$re_tag_compat/os) {
- ($kind, $it, $readahead) = (KIND_TAG, "$1$2", $3);
- $ok_p = 1;
- } elsif ($readahead =~ /^<!--(?:(?!-->).)*-->/s) {
- ($kind, $it, $readahead) = (KIND_COMMENT, $&, $');
- $ok_p = 1;
- warn "Warning: Syntax error in comment at line $lc_0: $&\n";
- $syntaxerror_p = 1;
- }
- last if $ok_p;
- my $next = scalar <$h>;
- $eof_p = !defined $next;
- last if $eof_p;
- $lc += 1;
- $readahead .= $next;
- }
- if ($kind ne KIND_TAG) {
- ;
- } elsif ($it =~ /^<!/) {
- $kind = KIND_DECL;
- $kind = KIND_COMMENT if $it =~ /^<!--(?:(?!-->).)*-->/;
- } elsif ($it =~ /^<\?/) {
- $kind = KIND_PI;
- }
- if ($it =~ /^$re_directive/ios && !$cdata_mode_p) {
- $kind = KIND_DIRECTIVE;
- }
- ($kind, $it) = (KIND_UNKNOWN, $readahead)
- if !$ok_p && $eof_p && !length $readahead;
- }
- return defined $it? (wantarray? ($kind, $it):
- [$kind, $it]): undef;
-}
-
-sub next_token (*) {
- my($h) = @_;
- my $it;
- if (!$cdata_mode_p) {
- $it = next_token_internal($h);
- if (defined $it && $it->[0] eq KIND_TAG) { # FIXME
- ($cdata_mode_p, $cdata_close) = (1, "</$1\\s*>")
- if $it->[1] =~ /^<(script|style|textarea)\b/i; #FIXME
- push @$it, extract_attributes($it->[1], $lc); #FIXME
- }
- } else {
- for (;;) {
- my $lc_prev = $lc;
- my $next = next_token_internal($h);
- last if !defined $next;
- if (defined $next && $next->[1] =~ /$cdata_close/i) { #FIXME
- ($lc, $readahead) = ($lc_prev, $next->[1] . $readahead); #FIXME
- $cdata_mode_p = 0;
- }
- last unless $cdata_mode_p;
- $it .= $next->[1]; #FIXME
- }
- $it = [KIND_CDATA, $it] if defined $it; #FIXME
- $cdata_close = undef;
- }
- return defined $it? (wantarray? @$it: $it): undef;