Proper kernel

string_utils.c

@@ -0,0 +1,61 @@
+#include "string_utils.h"
+
+BOOLEAN is_space16(CHAR16 Ch)
+{
+    return (Ch == L' ' || Ch == L'\t');
+}
+
+CHAR16 ascii_lower16(CHAR16 Ch)
+{
+    if (Ch >= L'A' && Ch <= L'Z') {
+        return (CHAR16)(Ch + 32);
+    }
+    return Ch;
+}
+
+BOOLEAN ascii_streq_ci(const CHAR16 *A, const CHAR16 *B)
+{
+    if (A == NULL || B == NULL) {
+        return FALSE;
+    }
+
+    while (*A != L'\0' && *B != L'\0') {
+        if (ascii_lower16(*A) != ascii_lower16(*B)) {
+            return FALSE;
+        }
+        A++;
+        B++;
+    }
+
+    return (*A == L'\0' && *B == L'\0');
+}
+
+void trim_spaces_inplace(CHAR16 *Cmd)
+{
+    UINTN start = 0;
+    UINTN end = 0;
+    UINTN i = 0;
+
+    if (Cmd == NULL) {
+        return;
+    }
+
+    while (Cmd[start] != L'\0' && is_space16(Cmd[start])) {
+        start++;
+    }
+
+    end = start;
+    while (Cmd[end] != L'\0') {
+        end++;
+    }
+
+    while (end > start && is_space16(Cmd[end - 1])) {
+        end--;
+    }
+
+    while (i < (end - start)) {
+        Cmd[i] = Cmd[start + i];
+        i++;
+    }
+    Cmd[i] = L'\0';
+}