1 files changed, 29 insertions, 0 deletions
diff --git a/fast/util.hh b/fast/util.hh
new file mode 100644
index 0000000..2a28f16
--- /dev/null
+++ b/fast/util.hh
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <string>
+
+using namespace std;
+
+
+namespace util {
+
+  inline string
+  json_escape(const string& s) { // FIXME: only inline?
+    ostringstream os;
+    for (auto it = s.cbegin(); it != s.cend(); it++) {
+      switch (*it) {
+        case '"':  os << "\\\""; break;
+        case '\\': os << "\\\\"; break;
+        case '\b': os << "\\b";  break;
+        case '\f': os << "\\f";  break;
+        case '\n': os << "\\n";  break;
+        case '\r': os << "\\r";  break;
+        case '\t': os << "\\t";  break;
+        default:   os << *it;    break;
+     }
+   }
+   return os.str();
+ };
+
+} // namespace util
+