1 files changed, 28 insertions, 0 deletions
diff --git a/src/uscxml/util/String.cpp b/src/uscxml/util/String.cpp
index 6d43301..24c7d42 100644
--- a/src/uscxml/util/String.cpp
+++ b/src/uscxml/util/String.cpp
@@ -25,6 +25,34 @@ namespace uscxml {
 
 #define ISWHITESPACE(char) (isspace(char))
 
+std::string escapedMacro(std::string const& s) {
+    // inspired by http://stackoverflow.com/questions/2417588/escaping-a-c-string
+    std::string returnValue="";
+    for (std::string::const_iterator iter = s.begin(), end = s.end(); iter != end; ++iter) {
+        char c = *iter;
+        if (' ' <= c && c <= '~' && c != '\\' && c != '"') {
+            returnValue += c;
+        }
+        else {
+            returnValue += "__";
+            switch(c) {
+                case '"':  returnValue += "COLON";  break;
+                case '\\': returnValue += "BACHSLASH"; break;
+                case '\t': returnValue += "TAB";  break;
+                case '\r': returnValue += "RETURN";  break;
+                case '\n': returnValue += "NEWLINE";  break;
+                default:
+                    char const* const hexdig = "0123456789ABCDEF";
+                    returnValue += 'x';
+                    returnValue += hexdig[c >> 4];
+                    returnValue += hexdig[c & 0xF];
+            }
+            returnValue += "__";
+        }
+    }
+    return returnValue;
+}
+
 std::list<std::string> tokenize(const std::string& line, const char sep, bool trimWhiteSpace) {
 	std::list<std::string> tokens;