restrcuct

include/String.h

@@ -0,0 +1,62 @@
+#define CUSTOM_STRING_MAX_LEN 64
+
+typedef struct {
+    char buffer[CUSTOM_STRING_MAX_LEN];
+    int length;  // current string length, excluding null terminator
+} String;
+
+// Initialize String to empty
+void cs_init(String* cs)
+{
+    cs->buffer[0] = '\0';
+    cs->length = 0;
+}
+
+// Set content from a C-string (truncates if needed)
+void cs_set(String* cs, const char* src)
+{
+    int i = 0;
+    while (src[i] != '\0' && i < (CUSTOM_STRING_MAX_LEN - 1))
+    {
+        cs->buffer[i] = src[i];
+        i++;
+    }
+    cs->buffer[i] = '\0';
+    cs->length = i;
+}
+
+// Compare two Strings for equality
+int cs_equal(const String* a, const String* b)
+{
+    if (a->length != b->length)
+        return 0;
+    for (int i = 0; i < a->length; i++)
+    {
+        if (a->buffer[i] != b->buffer[i])
+            return 0;
+    }
+    return 1;
+}
+
+// Check if String starts with another String prefix
+int cs_starts_with(const String* cs, const String* prefix)
+{
+    if (prefix->length > cs->length)
+        return 0;
+    for (int i = 0; i < prefix->length; i++)
+    {
+        if (cs->buffer[i] != prefix->buffer[i])
+            return 0;
+    }
+    return 1;
+}
+
+// Append a char to String (ignores if full)
+void cs_append_char(String* cs, char c)
+{
+    if (cs->length < (CUSTOM_STRING_MAX_LEN - 1))
+    {
+        cs->buffer[cs->length++] = c;
+        cs->buffer[cs->length] = '\0';
+    }
+}