Wrote the common table data functions.

common/CMakeLists.txt

@@ -12,6 +12,7 @@ list(APPEND _LIBUI_SOURCES
 	common/opentype.c
 	common/shouldquit.c
 	common/table.c
+	common/tabledata.c
 	common/userbugs.c
 	common/utf.c
 )

common/tabledata.c

@@ -0,0 +1,105 @@
+// 3 june 2018
+#include "../ui.h"
+#include "uipriv.h"
+
+struct uiTableData {
+	uiTableDataType type;
+	union {
+		char *str;
+		uiImage *img;
+		int i;
+		struct {
+			double r;
+			double g;
+			double b;
+			double a;
+		} color;
+	} u;
+};
+
+static uiTableData *newTableData(uiTableData type)
+{
+	uiTableData *d;
+
+	d = uiprivNew(uiTableData);
+	d->type = type;
+	return d;
+}
+
+void uiFreeAttribute(uiTableData *a)
+{
+	switch (d->type) {
+	case uiTableDataTypeString:
+		uiprivFree(d->u.str);
+		break;
+	}
+	uiprivFree(d);
+}
+
+uiTableDataType uiTableDataGetType(const uiTableData *d)
+{
+	return d->type;
+}
+
+uiTableData *uiNewTableDataString(const char *str)
+{
+	uiTableData *d;
+
+	d = newTableData(uiTableDataTypeString);
+	d->u.str = (char *) uiprivAlloc((strlen(str) + 1) * sizeof (char), "char[] (uiTableData)");
+	strcpy(d->u.str, str);
+	return d;
+}
+
+const char *uiTableDataString(const uiTableData *d)
+{
+	return d->u.str;
+}
+
+uiTableData *uiNewTableDataImage(uiImage *img)
+{
+	uiTableData *d;
+
+	d = newTableData(uiTableDataTypeImage);
+	d->u.img = img;
+	return d;
+}
+
+uiImage *uiTableDataImage(const uiTableData *d)
+{
+	return d->u.img;
+}
+
+uiTableData *uiNewTableDataInt(int i)
+{
+	uiTableData *d;
+
+	d = newTableData(uiTableDataTypeInt);
+	d->u.i = i;
+	return d;
+}
+
+int uiTableDataInt(const uiTableData *d)
+{
+	return d->u.i;
+}
+
+uiTableData *uiNewTableDataColor(double r, double g, double b, double a)
+{
+	uiTableData *d;
+
+	d = newTableData(uiTableDataTypeColor);
+	d->u.color.r = r;
+	d->u.color.g = g;
+	d->u.color.b = b;
+	d->u.color.a = a;
+	return d;
+}
+
+void uiTableDataColor(const uiTableData *d, double *r, double *g, double *b, double *a)
+{
+	*r = d->u.color.r;
+	*g = d->u.color.g;
+	*b = d->u.color.b;
+	*a = d->u.color.a;
+}