162 lines
4.1 KiB
Perl
Executable file
162 lines
4.1 KiB
Perl
Executable file
#!/usr/bin/env perl
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# $LynxId: collapse-br,v 1.8 2017/07/04 19:35:45 tom Exp $
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# Generate a series of HTML files containing a mixture of text and <br> tags,
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# comparing dumps of those to w3m and elinks.
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use warnings;
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use strict;
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use diagnostics;
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$| = 1;
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use Getopt::Std;
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use File::Temp qw/ tempdir /;
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our ( $opt_C, $opt_T, $opt_e, $opt_l, $opt_p, $opt_t, $opt_w );
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our $tempdir = tempdir( CLEANUP => 1 );
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sub dumpit($$) {
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my $prog = shift;
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my $html = shift;
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my $opts = "-dump";
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$html =
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"<html>"
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. "<head><title>T</title></head>"
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. "<body>$html</body>"
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. "</html>"
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if ($opt_t);
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my @result;
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if ( $prog =~ /lynx$/ ) {
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my $name = "$tempdir/lynx.cfg";
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$opts .= " -cfg=$name";
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open my $fh, ">$name";
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printf $fh "collapse_br_tags:%s\n", $opt_C ? "false" : "true";
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printf $fh "trim_blank_lines:%s\n", $opt_T ? "false" : "true";
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close $fh;
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}
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if ($opt_p) {
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$opts .= " -stdin" if ( $prog =~ /lynx$/ );
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$opts .= " -force-html" if ( $prog =~ /elinks$/ );
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$opts .= " -T text/html" if ( $prog =~ /w3m$/ );
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if ( open my $fh, "echo '$html' | $prog $opts |" ) {
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@result = <$fh>;
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close $fh;
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}
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}
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else {
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my $name = "$tempdir/foobar.html";
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open my $fh, ">$name";
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printf $fh "%s", $html;
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close $fh;
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$opts .= " $name";
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if ( open my $fh, "$prog $opts |" ) {
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@result = <$fh>;
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close $fh;
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}
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}
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for my $n ( 0 .. $#result ) {
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chomp $result[$n];
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}
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if ( open my $fh, "echo '$html' | $prog $opts |" ) {
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@result = <$fh>;
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close $fh;
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for my $n ( 0 .. $#result ) {
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chomp $result[$n];
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}
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}
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$result[0] = "OOPS" unless ( $#result >= 0 );
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return @result;
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}
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sub header($) {
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my @cols = @{ $_[0] };
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my $text = "";
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for my $c ( 0 .. $#cols ) {
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$text .= sprintf "%-8s", $cols[$c];
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}
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printf "\t %s\n", $text;
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}
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sub doit() {
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my $length = 1;
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my $state = -1;
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my @tokens;
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$tokens[0] = " ";
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$tokens[1] = "X";
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$tokens[2] = "<br>";
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my $tokens = $#tokens + 1;
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my @progs;
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$progs[ $#progs + 1 ] = "lynx";
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$progs[ $#progs + 1 ] = "w3m" if ($opt_w);
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$progs[ $#progs + 1 ] = "elinks" if ($opt_e);
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$progs[ $#progs + 1 ] = "./lynx" if ( -f "./lynx" );
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while ( $length <= $opt_l ) {
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my $bits = "";
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my $html = "";
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my $value = ++$state;
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$length = 0;
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while ( $value >= 0 ) {
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my $digit = $value % $tokens;
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my $update = ( $value - $digit ) / $tokens;
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last if ( ( $update <= 0 ) and ( $value <= 0 ) and $length > 0 );
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$bits .= sprintf "%d", $digit;
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$length++;
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$html .= $tokens[$digit];
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$value = $update;
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}
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# skip the non-interesting cases
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next if ( $bits =~ /00/ );
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next if ( $bits =~ /11/ );
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next unless ( $bits =~ /2/ );
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printf "%-*s '%s'\n", $opt_l, $bits, $html;
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my @listing;
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for my $p ( 0 .. $#progs ) {
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my @q = &dumpit( $progs[$p], $html );
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my $l = $p * 8;
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for my $r ( 0 .. $#q ) {
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$listing[$r] = "" unless ( $listing[$r] );
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$listing[$r] = sprintf "%-*s", $l, $listing[$r] if ( $l > 0 );
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$listing[$r] .= sprintf "|%s",
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substr( $q[$r] . "........", 0, 7 );
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}
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}
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&header( \@progs );
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for my $r ( 0 .. $#listing ) {
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printf "\t%2d %s|\n", $r, $listing[$r];
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}
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}
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}
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sub main::HELP_MESSAGE() {
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printf STDERR <<EOF
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Usage: $0 [options]
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Options:
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-C do not collapse BR-tags (lynx only)
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-T do not trim blank lines (lynx only)
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-e compare with elinks
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-l NUM generate test-cases up to this length (default: 3)
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-p pipe HTML to the program rather than reading a file
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-t add dummy title
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-w compare with w3m
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EOF
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;
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exit;
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}
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&getopts('CTel:ptw') || main::HELP_MESSAGE;
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$opt_l = 3 unless ($opt_l);
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&doit;
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1;
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