memcpy

examples/hello.c

@@ -1,28 +1,46 @@
 #include <stdio.h>
 #include "escpos.h"
 
-int main(void) {
-    
+int main(void)
+{
+
     const char *version = escpos_version();
-    
+
     printf("%s\n", version);
 
     escpos_buffer *buffer = escpos_buffer_new();
-    if (buffer == NULL)
-    {
-        return 1;
-    }
+    if (buffer == NULL) { goto cleanup; }
 
     for (int i = 0; i < 100; i++)
     {
        int err = escpos_buffer_append_byte(buffer, 'A');
-       if (err == -1) 
-       {
-            return 1;
-       }
+       if (err == -1) { goto cleanup; }
     }
 
-    escpos_buffer_free(buffer);
-    
+    escpos_buffer *buffer_a = escpos_buffer_new();
+    if (buffer_a == NULL) { goto cleanup; }
+    uint8_t data[] = {0x1B, 0x40};
+    int err = 0;
+
+    err = escpos_buffer_append(buffer_a, data);
+    if (err == -1) { goto cleanup; }
+
+    escpos_buffer *buffer_b = escpos_buffer_new();
+    if (buffer_b == NULL) { goto cleanup; }
+    uint8_t data_b[300];
+    for (int i = 0; i < 300; i++)
+    {
+        data_b[i] = 'A';
+    }
+
+    err = escpos_buffer_append(buffer_b, data_b);
+    if (err == -1) { goto cleanup; }
+
     return 0;
+
+cleanup:
+    escpos_buffer_free(buffer);
+    escpos_buffer_free(buffer_a);
+    escpos_buffer_free(buffer_b);
+
 }