[master] 3f8f72058 Dump gzip data in hex

[Poul-Henning Kamp]

commit 3f8f720581d6a2288524f721cd8ccba4e07e0a4b
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Tue May 16 10:33:09 2023 +0000

    Dump gzip data in hex

diff --git a/bin/varnishtest/vtc_log.c b/bin/varnishtest/vtc_log.c
index dae3ff0ec..89bbfa5ed 100644
--- a/bin/varnishtest/vtc_log.c
+++ b/bin/varnishtest/vtc_log.c
@@ -224,6 +224,7 @@ void
 vtc_dump(struct vtclog *vl, int lvl, const char *pfx, const char *str, int len)
 {
 	char buf[64];
+	int quote = VSB_QUOTE_UNSAFE | VSB_QUOTE_ESCHEX;
 
 	AN(pfx);
 	GET_VL(vl);
@@ -234,9 +235,12 @@ vtc_dump(struct vtclog *vl, int lvl, const char *pfx, const char *str, int len)
 		    lead[lvl < 0 ? 1: lvl], vl->id, pfx);
 		if (len < 0)
 			len = strlen(str);
+		else if (str[0] == 0x1f && str[1] == 0x8b)
+			quote = VSB_QUOTE_HEX; // Dump gzip data in HEX
 		VSB_quote_pfx(vl->vsb, buf, str,
-		    len > MAX_DUMP ? MAX_DUMP : len,
-		    VSB_QUOTE_UNSAFE | VSB_QUOTE_ESCHEX);
+		    len > MAX_DUMP ? MAX_DUMP : len, quote);
+		if (quote == VSB_QUOTE_HEX)
+			VSB_putc(vl->vsb, '\n');
 		if (len > MAX_DUMP)
 			VSB_printf(vl->vsb, "%s [...] (%d)\n",
 			    buf, len - MAX_DUMP);