csgrep -U: quote embedded NULs in the context

... as they cause problems to some JSON parsers

Author: kdudka

abstract-filter.cc

@@ -26,6 +26,7 @@
 #include <sstream>
 #include <vector>
 
+#include <boost/algorithm/string/replace.hpp>
 #include <boost/foreach.hpp>
 
 // /////////////////////////////////////////////////////////////////////////////
@@ -136,6 +137,11 @@ void appendCtxLines(
             // skip lines before the context lines
             continue;
 
+        // quote embedded NULs as they cause problems to some JSON parsers
+        std::string nul;
+        nul.push_back('\0');
+        boost::algorithm::replace_all(text, nul, "[NUL]");
+
         // format a single line of the comment
         std::ostringstream str;
         str << std::fixed << std::setw(5) << line;