1 files changed, 284 insertions, 0 deletions

diff --git a/xbmc/utils/Locale.cpp b/xbmc/utils/Locale.cpp
new file mode 100644
index 0000000..0a2d692
--- /dev/null
+++ b/xbmc/utils/Locale.cpp
@@ -0,0 +1,284 @@
+/*
+ *  Copyright (C) 2015-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#include "Locale.h"
+
+#include "utils/StringUtils.h"
+
+const CLocale CLocale::Empty;
+
+CLocale::CLocale()
+  : m_language(),
+    m_territory(),
+    m_codeset(),
+    m_modifier()
+{ }
+
+CLocale::CLocale(const std::string& language)
+  : m_language(),
+    m_territory(),
+    m_codeset(),
+    m_modifier()
+{
+  m_valid = ParseLocale(language, m_language, m_territory, m_codeset, m_modifier);
+}
+
+CLocale::CLocale(const std::string& language, const std::string& territory)
+  : m_language(language),
+    m_territory(territory),
+    m_codeset(),
+    m_modifier()
+{
+  Initialize();
+}
+
+CLocale::CLocale(const std::string& language, const std::string& territory, const std::string& codeset)
+  : m_language(language),
+    m_territory(territory),
+    m_codeset(codeset),
+    m_modifier()
+{
+  Initialize();
+}
+
+CLocale::CLocale(const std::string& language, const std::string& territory, const std::string& codeset, const std::string& modifier)
+  : m_language(language),
+    m_territory(territory),
+    m_codeset(codeset),
+    m_modifier(modifier)
+{
+  Initialize();
+}
+
+CLocale::~CLocale() = default;
+
+CLocale CLocale::FromString(const std::string& locale)
+{
+  return CLocale(locale);
+}
+
+bool CLocale::operator==(const CLocale& other) const
+{
+  if (!m_valid && !other.m_valid)
+    return true;
+
+  return m_valid == other.m_valid &&
+         StringUtils::EqualsNoCase(m_language, other.m_language) &&
+         StringUtils::EqualsNoCase(m_territory, other.m_territory) &&
+         StringUtils::EqualsNoCase(m_codeset, other.m_codeset) &&
+         StringUtils::EqualsNoCase(m_modifier, other.m_modifier);
+}
+
+std::string CLocale::ToString() const
+{
+  if (!m_valid)
+    return "";
+
+  std::string locale = ToShortString();
+
+  if (!m_codeset.empty())
+    locale += "." + m_codeset;
+
+  if (!m_modifier.empty())
+    locale += "@" + m_modifier;
+
+  return locale;
+}
+
+std::string CLocale::ToStringLC() const
+{
+  if (!m_valid)
+    return "";
+
+  std::string locale = ToString();
+  StringUtils::ToLower(locale);
+
+  return locale;
+}
+
+std::string CLocale::ToShortString() const
+{
+  if (!m_valid)
+    return "";
+
+  std::string locale = m_language;
+
+  if (!m_territory.empty())
+    locale += "_" + m_territory;
+
+  return locale;
+}
+
+std::string CLocale::ToShortStringLC() const
+{
+  if (!m_valid)
+    return "";
+
+  std::string locale = ToShortString();
+  StringUtils::ToLower(locale);
+
+  return locale;
+}
+
+bool CLocale::Equals(const std::string& locale) const
+{
+  CLocale other = FromString(locale);
+
+  return *this == other;
+}
+
+bool CLocale::Matches(const std::string& locale) const
+{
+  CLocale other = FromString(locale);
+
+  if (!m_valid && !other.m_valid)
+    return true;
+  if (!m_valid || !other.m_valid)
+    return false;
+
+  if (!StringUtils::EqualsNoCase(m_language, other.m_language))
+    return false;
+  if (!m_territory.empty() && !other.m_territory.empty() && !StringUtils::EqualsNoCase(m_territory, other.m_territory))
+    return false;
+  if (!m_codeset.empty() && !other.m_codeset.empty() && !StringUtils::EqualsNoCase(m_codeset, other.m_codeset))
+    return false;
+  if (!m_modifier.empty() && !other.m_modifier.empty() && !StringUtils::EqualsNoCase(m_modifier, other.m_modifier))
+    return false;
+
+  return true;
+}
+
+std::string CLocale::FindBestMatch(const std::set<std::string>& locales) const
+{
+  std::string bestMatch = "";
+  int bestMatchRank = -1;
+
+  for (auto const& locale : locales)
+  {
+    // check if there is an exact match
+    if (Equals(locale))
+      return locale;
+
+    int matchRank = GetMatchRank(locale);
+    if (matchRank > bestMatchRank)
+    {
+      bestMatchRank = matchRank;
+      bestMatch = locale;
+    }
+  }
+
+  return bestMatch;
+}
+
+std::string CLocale::FindBestMatch(const std::unordered_map<std::string, std::string>& locales) const
+{
+  std::string bestMatch = "";
+  int bestMatchRank = -1;
+
+  for (auto const& locale : locales)
+  {
+    // check if there is an exact match
+    if (Equals(locale.first))
+      return locale.first;
+
+    int matchRank = GetMatchRank(locale.first);
+    if (matchRank > bestMatchRank)
+    {
+      bestMatchRank = matchRank;
+      bestMatch = locale.first;
+    }
+  }
+
+  return bestMatch;
+}
+
+bool CLocale::CheckValidity(const std::string& language, const std::string& territory, const std::string& codeset, const std::string& modifier)
+{
+  static_cast<void>(territory);
+  static_cast<void>(codeset);
+  static_cast<void>(modifier);
+
+  return !language.empty();
+}
+
+bool CLocale::ParseLocale(const std::string &locale, std::string &language, std::string &territory, std::string &codeset, std::string &modifier)
+{
+  if (locale.empty())
+    return false;
+
+  language.clear();
+  territory.clear();
+  codeset.clear();
+  modifier.clear();
+
+  // the format for a locale is [language[_territory][.codeset][@modifier]]
+  std::string tmp = locale;
+
+  // look for the modifier after @
+  size_t pos = tmp.find("@");
+  if (pos != std::string::npos)
+  {
+    modifier = tmp.substr(pos + 1);
+    tmp = tmp.substr(0, pos);
+  }
+
+  // look for the codeset after .
+  pos = tmp.find(".");
+  if (pos != std::string::npos)
+  {
+    codeset = tmp.substr(pos + 1);
+    tmp = tmp.substr(0, pos);
+  }
+
+  // look for the codeset after _
+  pos = tmp.find("_");
+  if (pos != std::string::npos)
+  {
+    territory = tmp.substr(pos + 1);
+    StringUtils::ToUpper(territory);
+    tmp = tmp.substr(0, pos);
+  }
+
+  // what remains is the language
+  language = tmp;
+  StringUtils::ToLower(language);
+
+  return CheckValidity(language, territory, codeset, modifier);
+}
+
+void CLocale::Initialize()
+{
+  m_valid = CheckValidity(m_language, m_territory, m_codeset, m_modifier);
+  if (m_valid)
+  {
+    StringUtils::ToLower(m_language);
+    StringUtils::ToUpper(m_territory);
+  }
+}
+
+int CLocale::GetMatchRank(const std::string& locale) const
+{
+  CLocale other = FromString(locale);
+
+  // both locales must be valid and match in language
+  if (!m_valid || !other.m_valid ||
+      !StringUtils::EqualsNoCase(m_language, other.m_language))
+    return -1;
+
+  int rank = 0;
+  // matching in territory is considered more important than matching in
+  // codeset and/or modifier
+  if (!m_territory.empty() && !other.m_territory.empty() && StringUtils::EqualsNoCase(m_territory, other.m_territory))
+    rank += 3;
+  if (!m_codeset.empty() && !other.m_codeset.empty() && StringUtils::EqualsNoCase(m_codeset, other.m_codeset))
+    rank += 1;
+  if (!m_modifier.empty() && !other.m_modifier.empty() && StringUtils::EqualsNoCase(m_modifier, other.m_modifier))
+    rank += 1;
+
+  return rank;
+}