# Pipes in make are a pain. The "test -s" catches obvious errors.
info.html/%.html: info/%.t
- perl $(srcdir)/info/emp2html.pl $< >$@
+ $(call quiet-command,perl $(srcdir)/info/emp2html.pl $(info) <$< >$@,GEN $@)
### Explicit rules
# Drake Diedrich, 1996
# Markus Armbruster, 2004-2013
#
-# Usage: emp2html.pl [INFO-FILE]
+# Usage: emp2html.pl INFO...
#
-# Convert INFO-FILE (or else standard input) to HTML on standard output.
+# Convert info source on standard input to HTML on standard output.
+# INFO... are the info page names.
use strict;
use warnings;
my $ignore = 0;
my $is_subj;
my @a;
+my %topic;
+
+for (@ARGV) {
+ $topic{$_} = 1;
+}
print "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\"\n";
print " \"http://www.w3.org/TR/html4/strict.dtd\">\n";
print "<html>\n";
print "<head>\n";
-line: while (<>) {
+line: while (<STDIN>) {
chomp; # strip record separator
s/((^|[^\\])(\\\\)*)\\\".*/$1/g; # strip comments
sub anchor {
local ($_) = @_;
- # FIXME don't create dangling links here
- return "<a href=\"$_.html\">$_</a>";
+ return $topic{$_} ? "<a href=\"$_.html\">$_</a>" : $_;
}
# Translate HTML special characters into escape sequences
s/\\e/&\#92;/g; # escape character
# turn quoted strings that look like info names into links
# tacky...
+ my $pfx = "";
while (/\\\*Q([A-Za-z0-9\-\.]+)\\\*U|\"info ([A-Za-z0-9\-\.]+)\"/) {
- if (defined $1) {
- $_ = $` . anchor($1) . "$'";
+ if (defined $1 && $topic{$1}) {
+ $pfx = $` . anchor($1);
+ } elsif (defined $2 && $topic{$2}) {
+ $pfx = "$`\"info " . anchor($2) . "\"";
} else {
- $_ = "$`\"info " . anchor($2) . "\"$'";
+ $pfx .= $` . $&;
}
+ $_ = "$'";
}
+ $_ = "$pfx$_";
# tranlate more troff escapes and strings
s/\\\*Q/<em>/g;
s/\\\*U/<\/em>/g;
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