all sorts of changes

src/util.cpp

@@ -0,0 +1,64 @@
+/**
+ * Copyright - See the COPYRIGHT that is included with this distribution.
+ * pvxs is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution.
+ */
+
+#include <iomanip>
+
+#include <ctype.h>
+
+#include <pvxs/util.h>
+
+namespace pvxs {
+
+#define stringify(X) #X
+
+const char *version_str()
+{
+    return "PVXS " stringify(PVXS_MAJOR_VERSION);
+}
+
+unsigned long version_int()
+{
+    return PVXS_VERSION;
+}
+
+namespace detail {
+
+std::ostream& operator<<(std::ostream& strm, const Escaper& esc)
+{
+    const char *s = esc.val;
+    if(!s) {
+        strm<<"<NULL>";
+    } else {
+        for(; *s; s++) {
+            char c = *s, next;
+            switch(c) {
+            case '\a': next = 'a'; break;
+            case '\b': next = 'b'; break;
+            case '\f': next = 'f'; break;
+            case '\n': next = 'n'; break;
+            case '\r': next = 'r'; break;
+            case '\t': next = 't'; break;
+            case '\v': next = 'v'; break;
+            case '\\': next = '\\'; break;
+            case '\'': next = '\''; break;
+            default:
+                if(isprint(c)) {
+                    strm.put(c);
+                } else {
+                    strm<<"\\x"<<std::hex<<std::setw(2)<<std::setfill('0')<<unsigned(c);
+                }
+                continue;
+            }
+            strm.put('\\').put(next);
+        }
+    }
+    return strm;
+}
+
+
+}
+
+}