2 files changed, 9 insertions, 1 deletions

diff --git a/src/FbTk/StringUtil.cc b/src/FbTk/StringUtil.cc
index 0dcd989..fa809be 100644
--- a/src/FbTk/StringUtil.cc
+++ b/src/FbTk/StringUtil.cc
@@ -145,10 +145,17 @@ int extractNumber(const std::string& in, unsigned long long& out) {
 
 std::string number2String(long long num) {
     char s[128];
-    sprintf(s, "%lld", num);
+    snprintf(s, sizeof(s), "%lld", num);
     return std::string(s);
 }
 
+std::string number2HexString(long long num) {
+    char s[17];
+    snprintf(s, sizeof(s), "%lx", num);
+    return std::string(s);
+}
+
+
 /**
    Tries to find a string in another and
    ignoring the case of the characters
diff --git a/src/FbTk/StringUtil.hh b/src/FbTk/StringUtil.hh
index 538828b..930e0b5 100644
--- a/src/FbTk/StringUtil.hh
+++ b/src/FbTk/StringUtil.hh
@@ -44,6 +44,7 @@ int extractNumber(const std::string& in, unsigned long long& out);
 
 /// creates a number to a string
 std::string number2String(long long num);
+std::string number2HexString(long long num);
 
 /// Similar to `strstr' but this function ignores the case of both strings
 const char *strcasestr(const char *str, const char *ptn);