Ticket #46: java-use-string-critical-twice-as-slow-though.patch

xapian-bindings/java/java.i

@@ -29 +29 @@
 
 %include ../xapian-head.i
 
+namespace std {
+%typemap(in) string 
+%{ if(!$input) {
+     SWIG_JavaThrowException(jenv, SWIG_JavaNullPointerException, "null std::string");
+     return $null;
+    }
+    size_t $1_jlen = jenv->GetStringLength($input);
+    const jchar * $1_jstr = jenv->GetStringCritical($input, 0);
+    if (!$1_jstr) return $null;
+    $1.resize(0);
+    for (size_t i = 0; i != $1_jlen; ++i) {
+        unsigned ch = $1_jstr[i];
+        if ((ch & 0xfc00) == 0xd800 && ++i != $1_jlen) {
+            ch = (ch << 10) + $1_jstr[i] - 0x035fdc00;
+        }
+        Xapian::Unicode::append_utf8($1, ch);
+    }
+    jenv->ReleaseStringCritical($input, $1_jstr); %}
+
+%typemap(out) string 
+%{ jchar * $1_ustr = new jchar[$1.size()];
+   size_t $1_ulen = 0;
+   for (Xapian::Utf8Iterator $1_uit($1); $1_uit != Xapian::Utf8Iterator(); ++$1_uit) {
+     unsigned ch = *$1_uit;
+     if (ch >= 0x10000) {
+       $1_ustr[$1_ulen++] = 0xdbc0 + (ch >> 10);
+       ch = 0xdc00 | (ch & 0x3ff); 
+     }
+     $1_ustr[$1_ulen++] = ch;
+   }
+   $result = jenv->NewString($1_ustr, $1_ulen);
+   delete[] $1_ustr; %}
+
+%typemap(in) const string &
+%{ if(!$input) {
+     SWIG_JavaThrowException(jenv, SWIG_JavaNullPointerException, "null std::string");
+     return $null;
+   }
+   size_t $1_jlen = jenv->GetStringLength($input);
+   const jchar * $1_jstr = jenv->GetStringCritical($input, 0);
+   if (!$1_jstr) return $null;
+   std::string $1_str;
+   for (size_t i = 0; i != $1_jlen; ++i) {
+       unsigned ch = $1_jstr[i];
+       if ((ch & 0xfc00) == 0xd800 && ++i != $1_jlen) {
+           ch = (ch << 10) + $1_jstr[i] - 0x035fdc00;
+       }
+       Xapian::Unicode::append_utf8($1_str, ch);
+   }
+   $1 = &$1_str;
+   jenv->ReleaseStringCritical($input, $1_jstr); %}
+}
+
 // Rename function and method names to match Java conventions (e.g. from
 // get_description() to getDescription()).
 %rename("%(lctitle)s",%$isfunction) "";