Use longer example buffer to avoid complicated buffer management in reads-stdin.c.

Co-authored-by: Robert Schumacher <[email protected]>

Author: BillyONeal

src/reads-stdin.c

@@ -9,7 +9,20 @@ const char expected_repeat[] = {'e', 'x', 'a', 'm', 'p', 'l', 'e'};
 
 int main(int argc, char** argv)
 {
-    size_t consumed_prefix = 0;
+    char buffer[20];
+    const char expected[26] = "exampleexampleexampleexamp";
+    size_t offset = 0; // always between 0 and 6
+    for (;;)
+    {
+        size_t read_amount = fread(buffer, 1, sizeof(buffer), stdin);
+        if (argc > 1) puts(argv[1]);
+        if (read_amount == 0) {
+            if (feof(stdin)) { puts("success"); return 0; }
+            return 1;
+        }
+        if (memcmp(buffer, expected + offset, read_amount) != 0) return 2;
+        offset = (offset + read_amount) % 7;
+    }
     char buffer[20];
     for (;;)
     {