242 lines
7.3 KiB
Prolog
Executable file
242 lines
7.3 KiB
Prolog
Executable file
#!/usr/bin/perl
|
|
|
|
# Test filter partially based on Ambrose's hideous subst.pl code
|
|
# The idea is that the .tmpl files are not valid HTML, and as a result
|
|
# HTML::Parse would be completely confused by these templates.
|
|
# This is just a simple scanner (not a parser) & should give better results.
|
|
|
|
# This script is meant to be a drop-in replacement of text-extract.pl
|
|
|
|
use Getopt::Long;
|
|
use strict;
|
|
|
|
use vars qw( $input );
|
|
use vars qw( $debug_dump_only_p );
|
|
|
|
###############################################################################
|
|
|
|
# Hideous stuff from subst.pl
|
|
# 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
|
|
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
|
|
|
|
use vars qw( $re_directive );
|
|
BEGIN {
|
|
# $re_directive must not do any backreferences
|
|
$re_directive = q{<(?:!--\s*)?\/?TMPL_(?:VAR|LOOP|INCLUDE|IF|ELSE|UNLESS)\b(?:\s+(?:[a-zA-Z][-a-zA-Z0-9]*=)?(?:'[^']*'|"[^"]*"|[^\s<>]+))\s*(?:--)?>};
|
|
}
|
|
|
|
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, $&, $');
|
|
} elsif ($readahead =~ /^[^<]+/s) { # non-whitespace normal text
|
|
($kind, $it, $readahead) = (KIND_TEXT, $&, $');
|
|
} 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: $it): undef;
|
|
}
|
|
|
|
###############################################################################
|
|
|
|
sub debug_dump (*) { # for testing only
|
|
my($h) = @_;
|
|
print "re_tag_compat is /$re_tag_compat/\n";
|
|
for (;;) {
|
|
my $s = next_token $h;
|
|
last unless defined $s;
|
|
printf "%s\n", ('-' x 79);
|
|
my($kind, $t, $attr) = @$s; # FIXME
|
|
printf "%s:\n", $kind;
|
|
printf "%4dH%s\n", length($t),
|
|
join('', map {/[\0-\37]/? $_: "$_\b$_"} split(//, $t));
|
|
if ($kind eq KIND_TAG && %$attr) {
|
|
printf "Attributes:\n";
|
|
for my $a (keys %$attr) {
|
|
my($key, $val, $val_orig, $order) = @{$attr->{$a}};
|
|
printf "%s = %dH%s -- %s\n", $a, length $val,
|
|
join('', map {/[\0-\37]/? $_: "$_\b$_"} split(//, $val)),
|
|
$val_orig;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
###############################################################################
|
|
|
|
sub text_extract (*) {
|
|
my($h) = @_;
|
|
my %text = ();
|
|
for (;;) {
|
|
my $s = next_token $h;
|
|
last unless defined $s;
|
|
my($kind, $t, $attr) = @$s; # FIXME
|
|
if ($kind eq KIND_TEXT) {
|
|
$t =~ s/\s+$//s;
|
|
$text{$t} = 1 if $t =~ /\S/s; # FIXME... trailing whitespace
|
|
} elsif ($kind eq KIND_TAG && %$attr) {
|
|
# value [tag=input], meta
|
|
my $tag = lc($1) if $t =~ /^<(\S+)/s;
|
|
for my $a ('alt', 'content', 'title', 'value') {
|
|
if ($attr->{$a}) {
|
|
next if $a eq 'content' && $tag ne 'meta';
|
|
next if $a eq 'value' && ($tag ne 'input'
|
|
|| (ref $attr->{'type'} && $attr->{'type'}->[1] eq 'hidden'));
|
|
my($key, $val, $val_orig, $order) = @{$attr->{$a}}; #FIXME
|
|
$val =~ s/\s+$//s;
|
|
$text{$val} = 1 if $val =~ /\S/s;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
for my $t (keys %text) {
|
|
printf "%s\n", $t unless $t =~ /^(?:\s|\ )*$/s;
|
|
}
|
|
}
|
|
|
|
###############################################################################
|
|
|
|
GetOptions(
|
|
'f|file=s' => \$input,
|
|
'debug-dump-only-p' => \$debug_dump_only_p,
|
|
) || exit(-1);
|
|
|
|
open(INPUT, "<$input") || die "$0: $input: $!\n";
|
|
if ($debug_dump_only_p) {
|
|
debug_dump(*INPUT);
|
|
} else {
|
|
text_extract(*INPUT);
|
|
}
|
|
|
|
warn "Warning: This input will not work with Mozilla standards-compliant mode\n"
|
|
if $syntaxerror_p;
|
|
|
|
close INPUT;
|
|
|