Working on generating string literals for inclusion in generated code.

pglablib/codebuilder/StringEscapeRule.h

@@ -0,0 +1,47 @@
+#ifndef STRINGESCAPERULE_H
+#define STRINGESCAPERULE_H
+
+#include <QString>
+#include <boost/optional.hpp>
+
+enum class ConvertToNumericEscape {
+	Utf8, ///< Generates upto four escapes for 4 utf8 chars
+	Utf16, ///< Generates upto four escapes for 2 utf16 chars
+	Utf32, ///< Generates a single escape for the unicode codepoint
+};
+
+
+enum class NumericEscapeFormat {
+	Decimal,
+	HexUpper,
+	HexLower
+};
+
+class CharToNumericConversion {
+public:
+	ConvertToNumericEscape m_toNumericEscape;
+	NumericEscapeFormat m_numericEscapeFormat;
+	int m_minNumericDigits, m_maxNumericDigits;
+};
+
+/** The basic method of applying a StringEscapeRule is to find all matches
+ * in the string for the m_matchRegex.
+ *
+ * if m_numericConversion is set then the match is taken out of the string and replaced
+ * with one or more numerical escapes.
+ * if no conversion is needed the match is simple prefixed with m_prefixWidth
+ */
+class StringEscapeRule {
+public:
+	/** Regular expression that finds characters in the string that need replacing.
+	 * Each character to replace should always generate one match.
+	 */
+	QString m_matchRegex;
+	/** As often a simple escape character like \ or a doubling scheme is used this
+	 * field often provides enough flexibility.
+	 */
+	QString m_prefixWith;
+//	boost::optional<CharToNumericConversion> m_numericConversion;
+};
+
+#endif // STRINGESCAPERULE_H