tHandle empty response from server - sacc - sacc (saccomys): simple gopher client.

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---

commit 333f17e3958157b11ccf7acbf778748ac564406d

parent 7a4910b180411ba8a2d1e20a64acd9a324e76b71

Author: Quentin Rameau 

Date:   Tue, 20 Jun 2017 21:02:27 +0200

Handle empty response from server

Diffstat:
  sacc.c                              |      28 ++++++++++++++++++++--------

1 file changed, 20 insertions(+), 8 deletions(-)
---

diff --git a/sacc.c b/sacc.c

t@@ -274,24 +274,31 @@ connectto(const char *host, const char *port)
         return sock;
 }
 
-void
+int
 dig(Item *entry, Item *item)
 {
         int sock;
 
-        if (item->target ||   /* already in cache */
-            item->type > '1') /* not supported */
-                return;
+        if (item->target)     /* already in cache */
+                return 1;
+
+        item->entry = entry;
+
+        if (item->type > '1') /* not supported */
+                return 0;
 
         sock = connectto(item->host, item->port);
         sendselector(sock, item->selector);
-        item->entry = entry;
         item->raw = getrawitem(sock);
 
+        if (!*item->raw)      /* empty read */
+                return 0;
+
         if (item->type == '0')
                 item->target = item->raw;
         else if (item->type == '1')
                 item->target = parsediritem(item->raw);
+        return 1;
 }
 
 Item *
t@@ -370,9 +377,14 @@ main(int argc, char *argv[])
         hole = parseurl(argv[1]);
 
         for (;;) {
-                dig(entry, hole);
-                if (!(n = display(hole)))
-                        break;
+                if (dig(entry, hole)) {
+                        n = display(hole);
+                } else {
+                        n = 0;
+                        fprintf(stderr, "Couldn't get %s:%s/%c%s\n",
+                                hole->host, hole->port,
+                                hole->type, hole->selector);
+                }
                 do {
                         printf("%d items, visit (0: back, ^D or q: quit): ", n);
                         if (!fgets(buf, sizeof(buf), stdin)) {