+sub http_useragent_string_map ($$) {
+ my ($caller_lib_agent, $reason_style_or_caller) = @_;
+ $caller_lib_agent =~ y/A-Za-z/N-ZA-Mn-za-m/;
+ $caller_lib_agent =~ s/\s/_/g;
+ my $version= version_core();
+ return "yarrg/$version ($reason_style_or_caller)".
+ " $caller_lib_agent".
+ " (http://yarrg.chiark.net/intro)";
+}
+
+sub http_useragent ($) {
+ my ($who) = @_;
+ my $ua= LWP::UserAgent->new;
+ my $base= $ua->_agent();
+ $ua->agent(http_useragent_string_map($base, $who));
+ return $ua;
+}
+
+sub source_tarball ($$) {
+ my ($sourcebasedir,$spitoutfn) = @_;
+
+ my $pipe= new IO::Pipe or die $!;
+ my $pid= fork(); defined $pid or die $!;
+ if (!$pid) {
+ $ENV{'YPPSC_YARRG_SRCBASE'}= $sourcebasedir;
+ $pipe->writer();
+ exec '/bin/sh','-c','
+ cd -P "$YPPSC_YARRG_SRCBASE"
+ (
+ git-ls-files -z;
+ git-ls-files -z --others --exclude-from=.gitignore;
+ if test -d .git; then find .git -print0; fi
+ ) | (
+ cpio -Hustar -o --quiet -0 -R 1000:1000 || \
+ cpio -Hustar -o --quiet -0
+ ) | gzip
+ ';
+ die $!;
+ }
+ $pipe->reader();
+
+ my ($d, $l);
+ while ($l= read $pipe, $d, 65536) {
+ $spitoutfn->($d);
+ }
+ waitpid $pid,0;
+ defined $l or die "read pipe $!";
+ $pipe->error and die "pipe error $!";
+ close $pipe;
+ # deliberately ignore errors
+}
+