Merge pull request #998 from ispyisail/revive/785-case-insensitive-flags

Make auto_num_locked/potential_isolating case-insensitive

sources/qet.cpp

@@ -255,6 +255,23 @@ bool QET::attributeIsAReal(
 	return(true);
 }
 
+/**
+	@brief QET::infoFlagIsTrue
+	@see the header comment for why this exists rather than a bare
+	== "true" comparison.
+	@param value the raw elementInformations string to test
+	@return true if @p value, trimmed and case-folded, is one of the
+	truthy spellings this codebase already accepts elsewhere
+*/
+bool QET::infoFlagIsTrue(const QString &value)
+{
+	const QString v = value.trimmed().toLower();
+	return v == QLatin1String("true")
+		|| v == QLatin1String("1")
+		|| v == QLatin1String("yes")
+		|| v == QLatin1String("on");
+}
+
 /**
 	@brief QET::ElementsAndConductorsSentence
 	Permet de composer rapidement la proposition "x elements et y conducteurs"