Allow to configure controls

opts/control.c

@@ -0,0 +1,34 @@
+#include "control.h"
+
+#include <ctype.h>
+#include <stdbool.h>
+
+int device_option_normalize_name(const char *in, char *outp)
+{
+  // The output is always shorter, so `outp=in`
+  // colour_correction_matrix => ColourCorrectionMatrix
+  // Colour Correction Matrix => ColourCorrectionMatrix
+  // ColourCorrectionMatrix => ColourCorrectionMatrix
+
+  char *out = outp;
+  bool upper = true;
+
+  while (*in) {
+    if (isalnum(*in)) {
+      if (upper) {
+        *out++ = toupper(*in++);
+        upper = false;
+      } else {
+        *out++ = *in++;
+      }
+    } else if (isprint(*in)) {
+      upper = true;
+      while (*++in && isprint(*in) && !isalnum(*in));
+    } else {
+      in++;
+    }
+  }
+
+  *out++ = 0;
+  return out - outp;
+}