Put the FormatToStream function in its own compilation unit as it might

be useful for other things to.

pglablib/FormatToStream.h

@@ -0,0 +1,17 @@
+#ifndef FORMATTOSTREAM_H
+#define FORMATTOSTREAM_H
+
+#include <QString>
+#include <functional>
+
+class QTextStream;
+
+/**
+ * @brief FormatToStream replaces /%var%/ variables in a string with the values returned by the callback
+ * @param stream The stream to which to write the result of the formatting operation
+ * @param format The format string containing the vars.
+ * @param field_callback A callable which returns the values for var.
+ */
+void FormatToStream(QTextStream &stream, QString format, std::function<void(QTextStream &, QString)> field_callback);
+
+#endif // FORMATTOSTREAM_H