1 files changed, 15 insertions, 4 deletions
diff --git a/src/std/buffer.c b/src/std/buffer.c
index 3fc5184..42b1a0f 100644
--- a/src/std/buffer.c
+++ b/src/std/buffer.c
@@ -1,4 +1,5 @@
 #include "../../include/std/buffer.h"
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
@@ -25,18 +26,28 @@ static int tsl_buffer_ensure_capacity(TslBuffer *self, size_t new_size) {
         new_size = new_capacity;
     }
     new_ptr = realloc(self->data, new_size);
-    if(!new_ptr)
+    if(!new_ptr) {
+        fprintf(stderr, "Error: buffer append failed. Reason: out of memory\n");
         return 0;
+    }
 
     self->data = new_ptr;
     self->capacity = new_size;
     return 1;
 }
 
-int tsl_buffer_append(TslBuffer *self, void *data, size_t size) {
+int tsl_buffer_append(TslBuffer *self, const void *data, size_t size) {
     if(!tsl_buffer_ensure_capacity(self, self->size + size))
-        return 1;
+        return 0;
     memcpy((char*)self->data + self->size, data, size);
     self->size += size;
-    return 0;
+    return 1;
+}
+
+void* tsl_buffer_begin(TslBuffer *self) {
+    return self->data;
+}
+
+void* tsl_buffer_end(TslBuffer *self) {
+    return (char*)self->data + self->size;
 }