From cdcc4763250807b63a3af1f8fefb80dd74ea1d74 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marco=20Trevisan=20=28Trevi=C3=B1o=29?= <mail@3v1n0.net>
Date: Fri, 17 Jan 2020 17:22:15 +0100
Subject: [PATCH] examples/verify: Prompt match/no-match report in callback

Promptly show the match/no-match result in the match callback instead of
waiting the verification process to be finished.

Also exit in case of an hard error, while permit to try again in case of a
retry error.
---
 examples/verify.c | 33 +++++++++++++++++----------------
 1 file changed, 17 insertions(+), 16 deletions(-)

diff --git a/examples/verify.c b/examples/verify.c
index 545539a..acfc9ef 100644
--- a/examples/verify.c
+++ b/examples/verify.c
@@ -86,23 +86,13 @@ on_verify_completed (FpDevice *dev, GAsyncResult *res, void *user_data)
   if (!fp_device_verify_finish (dev, res, &match, &print, &error))
     {
       g_warning ("Failed to verify print: %s", error->message);
-      verify_quit (dev, verify_data);
-      return;
-    }
-
-  if (print && fp_device_supports_capture (dev) &&
-      print_image_save (print, "verify.pgm"))
-    g_print ("Print image saved as verify.pgm\n");
-
-  if (match)
-    {
-      g_print ("MATCH!\n");
-      verify_data->ret_value = EXIT_SUCCESS;
-    }
-  else
-    {
-      g_print ("NO MATCH!\n");
       verify_data->ret_value = EXIT_FAILURE;
+
+      if (error->domain != FP_DEVICE_RETRY)
+        {
+          verify_quit (dev, verify_data);
+          return;
+        }
     }
 
   g_print ("Verify again? [Y/n]? ");
@@ -120,6 +110,8 @@ static void
 on_match_cb (FpDevice *dev, FpPrint *match, FpPrint *print,
              gpointer user_data, GError *error)
 {
+  VerifyData *verify_data = user_data;
+
   if (error)
     {
       g_warning ("Match report: Finger not matched, retry error reported: %s",
@@ -127,10 +119,16 @@ on_match_cb (FpDevice *dev, FpPrint *match, FpPrint *print,
       return;
     }
 
+  if (print && fp_device_supports_capture (dev) &&
+      print_image_save (print, "verify.pgm"))
+    g_print ("Print image saved as verify.pgm\n");
+
   if (match)
     {
       char date_str[128];
 
+      verify_data->ret_value = EXIT_SUCCESS;
+
       g_date_strftime (date_str, G_N_ELEMENTS (date_str), "%Y-%m-%d\0",
                        fp_print_get_enroll_date (match));
       g_debug ("Match report: device %s matched finger %s successifully "
@@ -139,10 +137,13 @@ on_match_cb (FpDevice *dev, FpPrint *match, FpPrint *print,
                finger_to_string (fp_print_get_finger (match)),
                fp_print_get_description (match), date_str,
                fp_print_get_username (match));
+
+      g_print ("MATCH!\n");
     }
   else
     {
       g_debug ("Match report: Finger not matched");
+      g_print ("NO MATCH!\n");
     }
 }