+# This is somewhat grim, but I want the code for parsing config.sh here and
+# now so that I can expand $Config{ivsize} and $Config{ivtype}
+
+my $fetch_string = <<'EOT';
+
+# Search for it in the big string
+sub fetch_string {
+ my($self, $key) = @_;
+
+EOT
+
+if ($seen_quotes{'"'}) {
+ # We need the full ' and " code
+ $fetch_string .= <<'EOT';
+ my $quote_type = "'";
+ my $marker = "$key=";
+
+ # Check for the common case, ' delimited
+ my $start = index($Config_SH_expanded, "\n$marker$quote_type");
+ # If that failed, check for " delimited
+ if ($start == -1) {
+ $quote_type = '"';
+ $start = index($Config_SH_expanded, "\n$marker$quote_type");
+ }
+EOT
+} else {
+ $fetch_string .= <<'EOT';
+ # We only have ' delimted.
+ my $start = index($Config_SH_expanded, "\n$key=\'");
+EOT
+}
+$fetch_string .= <<'EOT';
+ # Start can never be -1 now, as we've rigged the long string we're
+ # searching with an initial dummy newline.
+ return undef if $start == -1;
+
+ $start += length($key) + 3;
+
+EOT
+if (!$seen_quotes{'"'}) {
+ # Don't need the full ' and " code, or the eval expansion.
+ $fetch_string .= <<'EOT';
+ my $value = substr($Config_SH_expanded, $start,
+ index($Config_SH_expanded, "'\n", $start)
+ - $start);
+EOT
+} else {
+ $fetch_string .= <<'EOT';
+ my $value = substr($Config_SH_expanded, $start,
+ index($Config_SH_expanded, "$quote_type\n", $start)
+ - $start);
+
+ # If we had a double-quote, we'd better eval it so escape
+ # sequences and such can be interpolated. Since the incoming
+ # value is supposed to follow shell rules and not perl rules,
+ # we escape any perl variable markers
+ if ($quote_type eq '"') {
+ $value =~ s/\$/\\\$/g;
+ $value =~ s/\@/\\\@/g;
+ eval "\$value = \"$value\"";
+ }
+EOT
+}
+$fetch_string .= <<'EOT';
+ # So we can say "if $Config{'foo'}".
+ $value = undef if $value eq 'undef';
+ $self->{$key} = $value; # cache it
+}
+EOT
+
+eval $fetch_string;
+die if $@;
https://perl5.git.perl.org / perl5.git / blobdiff