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general.h

@@ -42,4 +42,26 @@ int _LCR_hexDigitVal(char c)
   return -1;
 }
 
+/**
+  Computes simple hash of a string represented by a function returning next
+  string character, ending at 0 or endChar. This is intended for simple (but
+  not 100% reliable) string comparison.
+*/
+uint16_t _LCR_simpleStrHash(char (*nextChar)(void), char endChar)
+{
+  uint16_t r = 0;
+ 
+  while (1)
+  {
+    char c = nextChar();
+
+    if (c == 0 || c == endChar)
+      break;
+
+    r = ((r << 5) | (r >> 11)) + c;
+  }
+
+  return r;
+}
+
 #endif // guard