* Added error checks on canvas / display creations

test/blit.c

@@ -43,8 +43,19 @@ int main(int argc, char *argv[])
     cucul_canvas_t *cv, *sprite;
     caca_display_t *dp;
 
-    cv = cucul_create_canvas(0, 0);
+    cv = cucul_create_canvas(32, 16);
+    if(cv == NULL)
+    {
+        printf("Failed to create canvas\n");
+        return 1;
+    }
+
     dp = caca_create_display(cv);
+    if(dp == NULL)
+    {
+        printf("Failed to create display\n");
+        return 1;
+    }
 
     sprite = cucul_create_canvas(0, 0);
     cucul_set_color_ansi(sprite, CUCUL_LIGHTRED, CUCUL_BLACK);

test/colors.c

@@ -28,13 +28,19 @@ int main(int argc, char **argv)
     caca_display_t *dp;
     int i, j;
 
-    cv = cucul_create_canvas(0, 0);
-    if(!cv)
+    cv = cucul_create_canvas(32, 16);
+    if(cv == NULL)
+    {
+        printf("Failed to create canvas\n");
         return 1;
+    }
 
     dp = caca_create_display(cv);
-    if(!dp)
+    if(dp == NULL)
+    {
+        printf("Failed to create display\n");
         return 1;
+    }
 
     cucul_set_color_ansi(cv, CUCUL_LIGHTGRAY, CUCUL_BLACK);
     cucul_clear_canvas(cv);

test/cucul.c

@@ -44,6 +44,12 @@ int main(int argc, char *argv[])
 
     fprintf(stderr, "testing cucul_set_frame_name()\n");
     cv = cucul_create_canvas(1, 1);
+    if(cv == NULL)
+    {
+        printf("Failed to create canvas\n");
+        return 1;
+    }
+
     for(i = 0; i < ITER; i++)
     {
         cucul_create_frame(cv, 0);

test/demo.c

@@ -48,12 +48,19 @@ int main(int argc, char **argv)
     void (*demo)(void) = NULL;
     int quit = 0;
 
-    cv = cucul_create_canvas(0, 0);
-    if(!cv)
+    cv = cucul_create_canvas(32, 16);
+    if(cv == NULL)
+    {
+        printf("Failed to create canvas\n");
         return 1;
+    }
+
     dp = caca_create_display(cv);
-    if(!dp)
+    if(dp == NULL)
+    {
+        printf("Failed to create display\n");
         return 1;
+    }
 
     caca_set_display_time(dp, 40000);
 

test/dithering.c

@@ -41,8 +41,21 @@ int main(int argc, char *argv[])
     int neara, dista, nearb, distb, dist;
     int x, y;
 
-    cv = cucul_create_canvas(0, 0);
+    cv = cucul_create_canvas(32, 16);
+    if(cv == NULL)
+    {
+        printf("Failed to create canvas\n");
+        return 1;
+    }
+
     dp = caca_create_display(cv);
+    if(dp == NULL)
+    {
+        printf("Failed to create display\n");
+        return 1;
+    }
+
+
 
     for(x = 0; x < 100; x++)
         for(y = 0; y < 100; y++)

test/event.c

@@ -33,12 +33,19 @@ int main(int argc, char **argv)
     caca_event_t *events;
     int i, h, quit;
 
-    cv = cucul_create_canvas(0, 0);
-    if(!cv)
+    cv = cucul_create_canvas(32, 16);
+    if(cv == NULL)
+    {
+        printf("Failed to create canvas\n");
         return 1;
+    }
+
     dp = caca_create_display(cv);
-    if(!dp)
+    if(dp == NULL)
+    {
+        printf("Failed to create display\n");
         return 1;
+    }
 
     h = cucul_get_canvas_height(cv) - 1;
 

test/font.c

@@ -44,6 +44,12 @@ int main(int argc, char *argv[])
 
     /* Create a canvas */
     cv = cucul_create_canvas(8, 2);
+    if(cv == NULL)
+    {
+        printf("Can't create canvas\n");
+        return -1;
+    }
+
 
     /* Draw stuff on our canvas */
     cucul_set_color_ansi(cv, CUCUL_WHITE, CUCUL_BLACK);

test/frames.c

@@ -33,6 +33,12 @@ int main(int argc, char *argv[])
 
     /* Create a canvas with 200 frames */
     cv = cucul_create_canvas(0, 0);
+    if(cv == NULL)
+    {
+        printf("Can't create canvas\n");
+        return -1;
+    }
+
     for(frame = 1; frame < 200; frame++)
         cucul_create_frame(cv, frame);
 

test/fullwidth.c

@@ -35,7 +35,17 @@ int main(int argc, char *argv[])
     unsigned int i;
 
     cv = cucul_create_canvas(0, 0);
+    if(cv == NULL)
+    {
+        printf("Can't created canvas\n");
+        return -1;
+    }
     dp = caca_create_display(cv);
+    if(dp == NULL)
+    {
+        printf("Can't create display\n");
+        return -1;
+    }
 
     caca = cucul_create_canvas(6, 10);
     line = cucul_create_canvas(2, 1);

test/gamma.c

@@ -38,7 +38,17 @@ int main(int argc, char *argv[])
     int x;
 
     cv = cucul_create_canvas(0, 0);
+    if(cv == NULL)
+    {
+        printf("Can't created canvas\n");
+        return -1;
+    }
     dp = caca_create_display(cv);
+    if(dp == NULL)
+    {
+        printf("Can't create display\n");
+        return -1;
+    }
 
     cw = cucul_create_canvas(cucul_get_canvas_width(cv), cucul_get_canvas_height(cv));
     mask = cucul_create_canvas(cucul_get_canvas_width(cv), cucul_get_canvas_height(cv));

test/hsv.c

@@ -36,7 +36,17 @@ int main(int argc, char *argv[])
     int x, y;
 
     cv = cucul_create_canvas(0, 0);
+    if(cv == NULL)
+    {
+        printf("Can't created canvas\n");
+        return -1;
+    }
     dp = caca_create_display(cv);
+    if(dp == NULL)
+    {
+        printf("Can't create display\n");
+        return -1;
+    }
 
     for(y = 0; y < 256; y++)
         for(x = 0; x < 256; x++)

test/import.c

@@ -41,6 +41,12 @@ int main(int argc, char *argv[])
     }
 
     cv = cucul_create_canvas(0, 0);
+    if(cv == NULL)
+    {
+        printf("Can't create canvas\n");
+        return -1;
+    }
+
     if(cucul_import_file(cv, argv[1], argc >= 3 ? argv[2] : "") < 0)
     {
 	fprintf(stderr, "%s: could not open `%s'.\n", argv[0], argv[1]);
@@ -49,6 +55,11 @@ int main(int argc, char *argv[])
     }
 
     dp = caca_create_display(cv);
+    if(dp == NULL)
+    {
+        printf("Can't create display\n");
+        return -1;
+    }
 
     caca_refresh_display(dp);
 

test/input.c

@@ -42,7 +42,17 @@ int main(int argc, char *argv[])
     unsigned int i, e = 0, running = 1;
 
     cv = cucul_create_canvas(0, 0);
+    if(cv == NULL)
+    {
+        printf("Can't created canvas\n");
+        return -1;
+    }
     dp = caca_create_display(cv);
+    if(dp == NULL)
+    {
+        printf("Can't create display\n");
+        return -1;
+    }
 
     cucul_set_color_ansi(cv, CUCUL_WHITE, CUCUL_BLUE);
     cucul_put_str(cv, 1, 1, "Text entries - press tab to cycle");

test/swallow.c

@@ -42,8 +42,17 @@ int main(int argc, char **argv)
     cv = cucul_create_canvas(0, 0);
     app = cucul_create_canvas(0, 0);
     dp = caca_create_display(cv);
-    if(!dp)
-        return 1;
+
+    if(cv == NULL || app == NULL )
+    {
+        printf("Can't created canvas\n");
+        return -1;
+    }
+    if(dp == NULL)
+    {
+        printf("Can't create display\n");
+        return -1;
+    }
 
     w = (cucul_get_canvas_width(cv) - 4) / 2;
     h = (cucul_get_canvas_height(cv) - 6) / 2;

test/text.c

@@ -44,6 +44,12 @@ int main(int argc, char *argv[])
     cv = cucul_create_canvas(cucul_get_canvas_width(pig) * 2,
                              cucul_get_canvas_height(pig) * 2);
 
+    if(cv == NULL || pig == NULL)
+    {
+        printf("Can't created canvas\n");
+        return -1;
+    }
+
     cucul_blit(cv, 0, 0, pig, NULL);
     cucul_flip(pig);
     cucul_blit(cv, cucul_get_canvas_width(pig), 0, pig, NULL);

test/transform.c

@@ -46,7 +46,17 @@ int main(int argc, char *argv[])
     caca_display_t *dp;
 
     cv = cucul_create_canvas(0, 0);
+    if(cv == NULL)
+    {
+        printf("Can't created canvas\n");
+        return -1;
+    }
     dp = caca_create_display(cv);
+    if(dp == NULL)
+    {
+        printf("Can't create display\n");
+        return -1;
+    }
 
     image = cucul_create_canvas(70, 6);
     tmp = cucul_create_canvas(70, 6);

test/unicode.c

@@ -31,8 +31,17 @@ int main(int argc, char *argv[])
     caca_display_t *dp;
 
     cv = cucul_create_canvas(0, 0);
+    if(cv == NULL)
+    {
+        printf("Can't created canvas\n");
+        return -1;
+    }
     dp = caca_create_display(cv);
-
+    if(dp == NULL)
+    {
+        printf("Can't create display\n");
+        return -1;
+    }
     cucul_set_color_ansi(cv, CUCUL_WHITE, CUCUL_BLUE);
     cucul_put_str(cv, 1, 1, "Basic Unicode support");