// Copyright Joyent, Inc. and other Node contributors.

//

// Permission is hereby granted, free of charge, to any person obtaining a

// copy of this software and associated documentation files (the

// "Software"), to deal in the Software without restriction, including

// without limitation the rights to use, copy, modify, merge, publish,

// distribute, sublicense, and/or sell copies of the Software, and to permit

// persons to whom the Software is furnished to do so, subject to the

// following conditions:

//

// The above copyright notice and this permission notice shall be included

// in all copies or substantial portions of the Software.

//

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN

// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,

// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR

// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE

// USE OR OTHER DEALINGS IN THE SOFTWARE.

#ifndef SRC_NODE_I18N_H_

#define SRC_NODE_I18N_H_

#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS

#if defined(NODE_HAVE_I18N_SUPPORT)

#include "base_object.h"

#include "env.h"

#include "util.h"

#include "v8.h"

#include <unicode/ucnv.h>

#include <string>

namespace node {

namespace i18n {

bool InitializeICUDirectory(const std::string& path);

void SetDefaultTimeZone(const char* tzid);

enum idna_mode {

  // Default mode for maximum compatibility.

  IDNA_DEFAULT,

  // Ignore all errors in IDNA conversion, if possible.

  IDNA_LENIENT,

  // Enforce STD3 rules (UseSTD3ASCIIRules) and DNS length restrictions

  // (VerifyDnsLength). Corresponds to `beStrict` flag in the "domain to ASCII"

  // algorithm.

  IDNA_STRICT

};

// Implements the WHATWG URL Standard "domain to ASCII" algorithm.

// https://url.spec.whatwg.org/#concept-domain-to-ascii

int32_t ToASCII(MaybeStackBuffer<char>* buf,

                const char* input,

                size_t length,

                enum idna_mode mode = IDNA_DEFAULT);

// Implements the WHATWG URL Standard "domain to Unicode" algorithm.

// https://url.spec.whatwg.org/#concept-domain-to-unicode

int32_t ToUnicode(MaybeStackBuffer<char>* buf,

                  const char* input,

                  size_t length);

struct ConverterDeleter {

};

using ConverterPointer = std::unique_ptr<UConverter, ConverterDeleter>;

class Converter {

 public:

  explicit Converter(const char* name, const char* sub = nullptr);

  explicit Converter(UConverter* converter, const char* sub = nullptr);

  size_t max_char_size() const;

  size_t min_char_size() const;

  void reset();

  void set_subst_chars(const char* sub = nullptr);

 private:

  ConverterPointer conv_;

};

class ConverterObject : public BaseObject, Converter {

 public:

  enum ConverterFlags {

    CONVERTER_FLAGS_FLUSH      = 0x1,

    CONVERTER_FLAGS_FATAL      = 0x2,

    CONVERTER_FLAGS_IGNORE_BOM = 0x4,

    CONVERTER_FLAGS_UNICODE    = 0x8,

    CONVERTER_FLAGS_BOM_SEEN   = 0x10,

  };

  static void Create(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void Decode(const v8::FunctionCallbackInfo<v8::Value>& args);

  static void Has(const v8::FunctionCallbackInfo<v8::Value>& args);

 protected:

  ConverterObject(Environment* env,

                  v8::Local<v8::Object> wrap,

                  UConverter* converter,

                  int flags,

                  const char* sub = nullptr);

    else

  }

  }

  }

 private:

  int flags_ = 0;

};

}  // namespace i18n

}  // namespace node

#endif  // NODE_HAVE_I18N_SUPPORT

#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS

#endif  // SRC_NODE_I18N_H_