Imported from /home/lorry/working-area/delta_perl-xml-parser/XML-Parser-2.36.tar.gz.HEADXML-Parser-2.36master

1 files changed, 71 insertions, 0 deletions

diff --git a/Parser/LWPExternEnt.pl b/Parser/LWPExternEnt.pl
new file mode 100644
index 0000000..d0c940b
--- /dev/null
+++ b/Parser/LWPExternEnt.pl
@@ -0,0 +1,71 @@
+# LWPExternEnt.pl
+#
+# Copyright (c) 2000 Clark Cooper
+# All rights reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the same terms as Perl itself.
+
+package XML::Parser;
+
+use URI;
+use URI::file;
+use LWP;
+
+##
+## Note that this external entity handler reads the entire entity into
+## memory, so it will choke on huge ones. It would be really nice if
+## LWP::UserAgent optionally returned us an IO::Handle.
+##
+
+sub lwp_ext_ent_handler {
+  my ($xp, $base, $sys) = @_;  # We don't use public id
+
+  my $uri;
+
+  if (defined $base) {
+    # Base may have been set by parsefile, which is agnostic about
+    # whether its a file or URI.
+    my $base_uri = new URI($base);
+    unless (defined $base_uri->scheme) {
+      $base_uri = URI->new_abs($base_uri, URI::file->cwd);
+    }
+
+    $uri = URI->new_abs($sys, $base_uri);
+  }
+  else {
+    $uri = new URI($sys);
+    unless (defined $uri->scheme) {
+      $uri = URI->new_abs($uri, URI::file->cwd);
+    }
+  }
+  
+  my $ua = $xp->{_lwpagent};
+  unless (defined $ua) {
+    $ua = $xp->{_lwpagent} = new LWP::UserAgent();
+    $ua->env_proxy();
+  }
+
+  my $req = new HTTP::Request('GET', $uri);
+
+  my $res = $ua->request($req);
+  if ($res->is_error) {
+    $xp->{ErrorMessage} .= "\n" . $res->status_line . " $uri";
+    return undef;
+  }
+  
+  $xp->{_BaseStack} ||= [];
+  push(@{$xp->{_BaseStack}}, $base);
+
+  $xp->base($uri);
+  
+  return $res->content;
+}  # End lwp_ext_ent_handler
+
+sub lwp_ext_ent_cleanup {
+  my ($xp) = @_;
+
+  $xp->base(pop(@{$xp->{_BaseStack}}));
+}  # End lwp_ext_ent_cleanup
+
+1;