Handle ampersand

Replaced with & in messages

util.c

@@ -23,6 +23,7 @@
 #include <time.h>
 #include <string.h>
 #include <ctype.h>
+#include <stdlib.h>
 
 void get_time(char *thetime)
 {
@@ -54,3 +55,40 @@ char *trim(char *str)
     return str;
 }
 
+char * str_replace (const char *string, const char *substr, 
+    const char *replacement) {
+    char *tok = NULL;
+    char *newstr = NULL;
+    char *oldstr = NULL;
+    char *head = NULL;
+ 
+    if ( substr == NULL || replacement == NULL ) 
+        return strdup (string);
+
+    newstr = strdup (string);
+    head = newstr;
+
+    while ( (tok = strstr ( head, substr ))) {
+        oldstr = newstr;
+        newstr = malloc ( strlen ( oldstr ) - strlen ( substr ) + 
+            strlen ( replacement ) + 1 );
+        
+        if ( newstr == NULL ) { 
+            free (oldstr);
+            return NULL;
+        }
+        
+        memcpy ( newstr, oldstr, tok - oldstr );
+        memcpy ( newstr + (tok - oldstr), replacement, strlen ( replacement ) );
+        memcpy ( newstr + (tok - oldstr) + strlen( replacement ), 
+            tok + strlen ( substr ), 
+            strlen ( oldstr ) - strlen ( substr ) - ( tok - oldstr ) );
+        memset ( newstr + strlen ( oldstr ) - strlen ( substr ) + 
+            strlen ( replacement ) , 0, 1 );
+        
+        head = newstr + (tok - oldstr) + strlen( replacement );
+        free (oldstr);
+    }
+  
+    return newstr;
+}