/* Copyright (C) 2007 The glibmm Development Team
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <glibmm/utility.h>

using CompileFlags = Glib::Regex::CompileFlags;
using MatchFlags = Glib::Regex::MatchFlags;

namespace Glib
{

Glib::RefPtr<Glib::Regex>
Regex::create(
  Glib::UStringView pattern, CompileFlags compile_options, MatchFlags match_options)
{
  GError* gerror = nullptr;
  auto regex = g_regex_new(
    pattern.c_str(), (GRegexCompileFlags)compile_options, (GRegexMatchFlags)match_options, &gerror);

  if (gerror)
    Glib::Error::throw_exception(gerror);
  return Glib::wrap(regex);
}

// static
Glib::ustring
Regex::escape_string(const Glib::ustring& string)
{
  const auto buf =
    make_unique_ptr_gfree(g_regex_escape_string(string.raw().c_str(), string.raw().size()));
  return Glib::ustring(buf.get());
}

bool
Regex::match(
  Glib::UStringView string, Glib::MatchInfo& match_info, MatchFlags match_options)
{
  GMatchInfo* ginfo = nullptr;
  bool const result = static_cast<bool>(
    g_regex_match(gobj(), string.c_str(), static_cast<GRegexMatchFlags>(match_options), &ginfo));
  match_info.set_gobject(ginfo);
  return result;
}

bool
Regex::match(Glib::UStringView string, MatchFlags match_options)
{
  return g_regex_match(gobj(), string.c_str(), (GRegexMatchFlags)(match_options), nullptr);
}

bool
Regex::match(Glib::UStringView string, int start_position, Glib::MatchInfo& match_info,
  MatchFlags match_options)
{
  GError* gerror = nullptr;
  GMatchInfo* ginfo = nullptr;

  bool const result = static_cast<bool>(g_regex_match_full(gobj(), string.c_str(), -1,
    start_position, static_cast<GRegexMatchFlags>(match_options), &ginfo, &gerror));

  if (gerror)
    ::Glib::Error::throw_exception(gerror);

  match_info.set_gobject(ginfo);
  return result;
}

bool
Regex::match(Glib::UStringView string, gssize string_len, int start_position,
  Glib::MatchInfo& match_info, MatchFlags match_options)
{
  GError* gerror = nullptr;
  GMatchInfo* ginfo = nullptr;

  bool const result = static_cast<bool>(g_regex_match_full(gobj(), string.c_str(), string_len,
    start_position, static_cast<GRegexMatchFlags>(match_options), &ginfo, &gerror));

  if (gerror)
    ::Glib::Error::throw_exception(gerror);

  match_info.set_gobject(ginfo);
  return result;
}

bool
Regex::match(Glib::UStringView string, int start_position, MatchFlags match_options)
{
  GError* gerror = nullptr;
  bool retvalue = g_regex_match_full(gobj(), string.c_str(), -1, start_position,
    ((GRegexMatchFlags)(match_options)), nullptr, &(gerror));
  if (gerror)
    ::Glib::Error::throw_exception(gerror);

  return retvalue;
}

bool
Regex::match(
  Glib::UStringView string, gssize string_len, int start_position, MatchFlags match_options)
{
  GError* gerror = nullptr;
  bool retvalue = g_regex_match_full(gobj(), string.c_str(), string_len, start_position,
    ((GRegexMatchFlags)(match_options)), nullptr, &(gerror));
  if (gerror)
    ::Glib::Error::throw_exception(gerror);

  return retvalue;
}

bool
Regex::match_all(
  Glib::UStringView string, Glib::MatchInfo& match_info, MatchFlags match_options)
{
  GMatchInfo* ginfo = nullptr;
  bool const result = static_cast<bool>(g_regex_match_all(
    gobj(), string.c_str(), static_cast<GRegexMatchFlags>(match_options), &ginfo));
  match_info.set_gobject(ginfo);
  return result;
}

bool
Regex::match_all(Glib::UStringView string, MatchFlags match_options)
{
  return g_regex_match_all(gobj(), string.c_str(), ((GRegexMatchFlags)(match_options)), nullptr);
}

bool
Regex::match_all(Glib::UStringView string, int start_position, Glib::MatchInfo& match_info,
  MatchFlags match_options)
{
  GError* gerror = nullptr;
  GMatchInfo* ginfo = nullptr;

  bool const retvalue = static_cast<bool>(g_regex_match_all_full(gobj(), string.c_str(), -1,
    start_position, static_cast<GRegexMatchFlags>(match_options), &ginfo, &gerror));

  if (gerror)
    ::Glib::Error::throw_exception(gerror);

  match_info.set_gobject(ginfo);
  return retvalue;
}

bool
Regex::match_all(Glib::UStringView string, gssize string_len, int start_position,
  Glib::MatchInfo& match_info, MatchFlags match_options)
{
  GError* gerror = nullptr;
  GMatchInfo* ginfo = nullptr;

  bool const retvalue = static_cast<bool>(g_regex_match_all_full(gobj(), string.c_str(), string_len,
    start_position, static_cast<GRegexMatchFlags>(match_options), &ginfo, &gerror));

  if (gerror)
    ::Glib::Error::throw_exception(gerror);

  match_info.set_gobject(ginfo);
  return retvalue;
}

bool
Regex::match_all(Glib::UStringView string, int start_position, MatchFlags match_options)
{
  GError* gerror = nullptr;
  bool retvalue = g_regex_match_all_full(gobj(), string.c_str(), -1, start_position,
    ((GRegexMatchFlags)(match_options)), nullptr, &(gerror));
  if (gerror)
    ::Glib::Error::throw_exception(gerror);

  return retvalue;
}

bool
Regex::match_all(
  Glib::UStringView string, gssize string_len, int start_position, MatchFlags match_options)
{
  GError* gerror = nullptr;
  bool retvalue = g_regex_match_all_full(gobj(), string.c_str(), string_len, start_position,
    ((GRegexMatchFlags)(match_options)), nullptr, &(gerror));
  if (gerror)
    ::Glib::Error::throw_exception(gerror);

  return retvalue;
}

Glib::ustring
Regex::replace(Glib::UStringView string, int start_position, Glib::UStringView replacement,
  MatchFlags match_options)
{
  GError* gerror = nullptr;
  auto retvalue = Glib::convert_return_gchar_ptr_to_ustring(g_regex_replace(gobj(), string.c_str(),
    -1, start_position, replacement.c_str(), ((GRegexMatchFlags)(match_options)), &(gerror)));
  if (gerror)
    ::Glib::Error::throw_exception(gerror);

  return retvalue;
}

Glib::ustring
Regex::replace_literal(Glib::UStringView string, int start_position,
  Glib::UStringView replacement, MatchFlags match_options)
{
  GError* gerror = nullptr;
  auto retvalue =
    Glib::convert_return_gchar_ptr_to_ustring(g_regex_replace_literal(gobj(), string.c_str(), -1,
      start_position, replacement.c_str(), ((GRegexMatchFlags)(match_options)), &(gerror)));
  if (gerror)
    ::Glib::Error::throw_exception(gerror);

  return retvalue;
}

std::vector<Glib::ustring>
Regex::split(Glib::UStringView string, int start_position, MatchFlags match_options,
  int max_tokens) const
{
  GError* gerror = nullptr;
  auto retvalue = Glib::ArrayHandler<Glib::ustring>::array_to_vector(
    g_regex_split_full(const_cast<GRegex*>(gobj()), string.c_str(), -1, start_position,
      ((GRegexMatchFlags)(match_options)), max_tokens, &(gerror)),
    Glib::OWNERSHIP_DEEP);
  if (gerror)
    ::Glib::Error::throw_exception(gerror);

  return retvalue;
}

MatchInfo::MatchInfo() : gobject_(nullptr), take_ownership_(false)
{
}

MatchInfo::MatchInfo(GMatchInfo* castitem, bool take_ownership)
: gobject_(castitem), take_ownership_(take_ownership)
{
}

MatchInfo::MatchInfo(MatchInfo&& other) noexcept : gobject_(std::move(other.gobject_)),
                                                   take_ownership_(std::move(other.take_ownership_))
{
  other.gobject_ = nullptr;
  other.take_ownership_ = false;
}

MatchInfo&
MatchInfo::operator=(MatchInfo&& other) noexcept
{
  if (take_ownership_ && gobject_)
    g_match_info_free(gobject_);

  gobject_ = std::move(other.gobject_);
  take_ownership_ = std::move(other.take_ownership_);

  other.gobject_ = nullptr;
  other.take_ownership_ = false;

  return *this;
}

void
MatchInfo::set_gobject(GMatchInfo* castitem, bool take_ownership)
{
  if (gobject_ && this->take_ownership_)
    g_match_info_free(gobject_);

  gobject_ = castitem;
  this->take_ownership_ = take_ownership;
}

MatchInfo::~MatchInfo()
{
  if (take_ownership_ && gobject_)
    g_match_info_free(gobject_);
}

} // namespace Glib