Use abi::__cxx_demangle for symbol demangling on darwin

Author: NicksWorld

library/Process-darwin.cpp

@@ -37,6 +37,7 @@ distribution.
 #include <set>
 #include <cstdio>
 #include <cstring>
+#include <cxxabi.h>
 using namespace std;
 
 #include <md5wrapper.h>
@@ -111,13 +112,18 @@ Process::~Process()
 
 string Process::doReadClassName (void * vptr)
 {
-    //FIXME: BAD!!!!!
-    char * typeinfo = Process::readPtr(((char *)vptr - sizeof(void*)));
-    char * typestring = Process::readPtr(typeinfo + sizeof(void*));
-    string raw = readCString(typestring);
-    size_t  start = raw.find_first_of("abcdefghijklmnopqrstuvwxyz");// trim numbers
-    size_t end = raw.length();
-    return raw.substr(start,end-start);
+    char* typeinfo = Process:readPtr(((char*)vptr - sizeof(void*)));
+    char* typestring = Process::readPtr(typeinfo + sizeof(void*));
+
+    int status = -1;
+    char* demangledRaw = abi::__cxa_demangle(typestring, nullptr, nullptr, &status);
+    if (status != 0)
+        return "dummy"; // Failed to demangle, return dummy name
+
+    string demangled(demangledRaw);
+    free(demangledRaw);
+
+    return demangled;
 }
 
 #include <mach/mach.h>