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#ifndef GEARS_BASE_NPAPI_NP_UTILS_H__
#define GEARS_BASE_NPAPI_NP_UTILS_H__

#include "gears/base/common/base_class.h"
#include "gears/base/common/string16.h"

// Utility functions to allocate an NPString.  Must be freed using
// NPN_MemFree(str.utf8characters).
NPString NPN_StringDup(const char *value, int length);
NPString NPN_StringDup(const char16 *value, int length);
NPString NPN_StringDup(const NPString &str);

// Wrapper functions to abstract-out differences between WebKit & Gecko NPAPI.
inline const NPUTF8 *GetNPStringUTF8Characters(const NPString &npstr) {
  return npstr.UTF8Characters;
}

inline uint32 GetNPStringUTF8Length(const NPString &npstr) {
  return npstr.UTF8Length;
}

// Convenience wrappers to make an NPVariant from various string types.
#define STDSTRING_TO_NPVARIANT(str, var) \
  STRINGN_TO_NPVARIANT(str.data(), str.length(), var)

#define NPSTRING_TO_NPVARIANT(npstr, var) \
  STRINGN_TO_NPVARIANT(GetNPStringUTF8Characters(npstr), \
                       GetNPStringUTF8Length(npstr), var)

#endif  // GEARS_BASE_NPAPI_NP_UTILS_H__