First commit

1 files changed, 41 insertions, 0 deletions

diff --git a/src/fstrcmp.c b/src/fstrcmp.c
new file mode 100644
index 0000000..b26baa8
--- /dev/null
+++ b/src/fstrcmp.c
@@ -0,0 +1,41 @@
+/*
+ * nanowasm, a tiny WebAssembly/Wasm interpreter
+ * Copyright (C) 2023-2024  Xavier Del Campo Romero
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#include <nw/fstring.h>
+#include <nw/log.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+int fstrcmp(const char *str, FILE *const f, const bool abort)
+{
+    int ret = 0;
+
+    for (size_t i = 0; i < strlen(str); i++)
+    {
+        uint8_t byte;
+
+        if (!fread(&byte, sizeof byte, 1, f))
+        {
+            LOG("%s: fread(3) failed, feof=%d, ferror=%d\n",
+                __func__, feof(f), ferror(f));
+            return -1;
+        }
+        else if (byte != str[i])
+        {
+            if (abort)
+                return -1;
+            else
+                ret = -1;
+        }
+    }
+
+    return ret;
+}