1 files changed, 421 insertions, 0 deletions
diff --git a/xbmc/settings/lib/SettingDependency.cpp b/xbmc/settings/lib/SettingDependency.cpp
new file mode 100644
index 0000000..e3122da
--- /dev/null
+++ b/xbmc/settings/lib/SettingDependency.cpp
@@ -0,0 +1,421 @@
+/*
+ *  Copyright (C) 2013-2018 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 "SettingDependency.h"
+
+#include "ServiceBroker.h"
+#include "Setting.h"
+#include "SettingDefinitions.h"
+#include "SettingsManager.h"
+#include "utils/StringUtils.h"
+#include "utils/XBMCTinyXML.h"
+#include "utils/log.h"
+
+#include <memory>
+#include <set>
+#include <stdlib.h>
+#include <string>
+
+Logger CSettingDependencyCondition::s_logger;
+
+CSettingDependencyCondition::CSettingDependencyCondition(
+    CSettingsManager* settingsManager /* = nullptr */)
+  : CSettingDependencyCondition(settingsManager, "", "", "")
+{
+}
+
+CSettingDependencyCondition::CSettingDependencyCondition(
+    const std::string& setting,
+    const std::string& value,
+    SettingDependencyOperator op,
+    bool negated /* = false */,
+    CSettingsManager* settingsManager /* = nullptr */)
+  : CSettingDependencyCondition(
+        settingsManager, setting, setting, value, SettingDependencyTarget::Setting, op, negated)
+{
+}
+
+CSettingDependencyCondition::CSettingDependencyCondition(
+    const std::string& strProperty,
+    const std::string& value,
+    const std::string& setting /* = "" */,
+    bool negated /* = false */,
+    CSettingsManager* settingsManager /* = nullptr */)
+  : CSettingDependencyCondition(settingsManager,
+                                strProperty,
+                                setting,
+                                value,
+                                SettingDependencyTarget::Property,
+                                SettingDependencyOperator::Equals,
+                                negated)
+{
+}
+
+CSettingDependencyCondition::CSettingDependencyCondition(
+    CSettingsManager* settingsManager,
+    const std::string& strProperty,
+    const std::string& setting,
+    const std::string& value,
+    SettingDependencyTarget target /* = SettingDependencyTarget::Unknown */,
+    SettingDependencyOperator op /* = SettingDependencyOperator::Equals */,
+    bool negated /* = false */)
+  : CSettingConditionItem(settingsManager), m_target(target), m_operator(op)
+{
+  if (s_logger == nullptr)
+    s_logger = CServiceBroker::GetLogging().GetLogger("CSettingDependencyCondition");
+
+  m_name = strProperty;
+  m_setting = setting;
+  m_value = value;
+  m_negated = negated;
+}
+
+bool CSettingDependencyCondition::Deserialize(const TiXmlNode *node)
+{
+  if (!CSettingConditionItem::Deserialize(node))
+    return false;
+
+  auto elem = node->ToElement();
+  if (elem == nullptr)
+    return false;
+
+  m_target = SettingDependencyTarget::Setting;
+  auto strTarget = elem->Attribute(SETTING_XML_ATTR_ON);
+  if (strTarget != nullptr && !setTarget(strTarget))
+  {
+    s_logger->warn("unknown target \"{}\"", strTarget);
+    return false;
+  }
+
+  if (m_target != SettingDependencyTarget::Setting && m_name.empty())
+  {
+    s_logger->warn("missing name for dependency");
+    return false;
+  }
+
+  if (m_target == SettingDependencyTarget::Setting)
+  {
+    if (m_setting.empty())
+    {
+      s_logger->warn("missing setting for dependency");
+      return false;
+    }
+
+    m_name = m_setting;
+  }
+
+  m_operator = SettingDependencyOperator::Equals;
+  auto strOperator = elem->Attribute(SETTING_XML_ATTR_OPERATOR);
+  if (strOperator != nullptr && !setOperator(strOperator))
+  {
+    s_logger->warn("unknown operator \"{}\"", strOperator);
+    return false;
+  }
+
+  return true;
+}
+
+bool CSettingDependencyCondition::Check() const
+{
+  if (m_name.empty() ||
+      m_target == SettingDependencyTarget::Unknown ||
+      m_operator == SettingDependencyOperator::Unknown ||
+      m_settingsManager == nullptr)
+    return false;
+
+  bool result = false;
+  switch (m_target)
+  {
+    case SettingDependencyTarget::Setting:
+    {
+      if (m_setting.empty())
+        return false;
+
+      auto setting = m_settingsManager->GetSetting(m_setting);
+      if (setting == nullptr)
+      {
+        s_logger->warn("unable to check condition on unknown setting \"{}\"", m_setting);
+        return false;
+      }
+
+      switch (m_operator)
+      {
+        case SettingDependencyOperator::Equals:
+          result = setting->Equals(m_value);
+          break;
+
+        case SettingDependencyOperator::LessThan:
+        {
+          const auto value = setting->ToString();
+          if (StringUtils::IsInteger(m_value))
+            result = strtol(value.c_str(), nullptr, 0) < strtol(m_value.c_str(), nullptr, 0);
+          else
+            result = value.compare(m_value) < 0;
+          break;
+        }
+
+        case SettingDependencyOperator::GreaterThan:
+        {
+          const auto value = setting->ToString();
+          if (StringUtils::IsInteger(m_value))
+            result = strtol(value.c_str(), nullptr, 0) > strtol(m_value.c_str(), nullptr, 0);
+          else
+            result = value.compare(m_value) > 0;
+          break;
+        }
+
+        case SettingDependencyOperator::Contains:
+          result = (setting->ToString().find(m_value) != std::string::npos);
+          break;
+
+        case SettingDependencyOperator::Unknown:
+        default:
+          break;
+      }
+
+      break;
+    }
+
+    case SettingDependencyTarget::Property:
+    {
+      SettingConstPtr setting;
+      if (!m_setting.empty())
+      {
+        setting = m_settingsManager->GetSetting(m_setting);
+        if (setting == nullptr)
+        {
+          s_logger->warn("unable to check condition on unknown setting \"{}\"", m_setting);
+          return false;
+        }
+      }
+      result = m_settingsManager->GetConditions().Check(m_name, m_value, setting);
+      break;
+    }
+
+    default:
+      return false;
+  }
+
+  return result == !m_negated;
+}
+
+bool CSettingDependencyCondition::setTarget(const std::string &target)
+{
+  if (StringUtils::EqualsNoCase(target, "setting"))
+    m_target = SettingDependencyTarget::Setting;
+  else if (StringUtils::EqualsNoCase(target, "property"))
+    m_target = SettingDependencyTarget::Property;
+  else
+    return false;
+
+  return true;
+}
+
+bool CSettingDependencyCondition::setOperator(const std::string &op)
+{
+  size_t length = 0;
+  if (StringUtils::EndsWithNoCase(op, "is"))
+  {
+    m_operator = SettingDependencyOperator::Equals;
+    length = 2;
+  }
+  else if (StringUtils::EndsWithNoCase(op, "lessthan"))
+  {
+    m_operator = SettingDependencyOperator::LessThan;
+    length = 8;
+  }
+  else if (StringUtils::EndsWithNoCase(op, "lt"))
+  {
+    m_operator = SettingDependencyOperator::LessThan;
+    length = 2;
+  }
+  else if (StringUtils::EndsWithNoCase(op, "greaterthan"))
+  {
+    m_operator = SettingDependencyOperator::GreaterThan;
+    length = 11;
+  }
+  else if (StringUtils::EndsWithNoCase(op, "gt"))
+  {
+    m_operator = SettingDependencyOperator::GreaterThan;
+    length = 2;
+  }
+  else if (StringUtils::EndsWithNoCase(op, "contains"))
+  {
+    m_operator = SettingDependencyOperator::Contains;
+    length = 8;
+  }
+
+  if (op.size() > length + 1)
+    return false;
+  if (op.size() == length + 1)
+  {
+    if (!StringUtils::StartsWith(op, "!"))
+      return false;
+    m_negated = true;
+  }
+
+  return true;
+}
+
+bool CSettingDependencyConditionCombination::Deserialize(const TiXmlNode *node)
+{
+  if (node == nullptr)
+    return false;
+
+  size_t numOperations = m_operations.size();
+  size_t numValues = m_values.size();
+
+  if (!CSettingConditionCombination::Deserialize(node))
+    return false;
+
+  if (numOperations < m_operations.size())
+  {
+    for (size_t i = numOperations; i < m_operations.size(); i++)
+    {
+      if (m_operations[i] == nullptr)
+        continue;
+
+      auto combination = static_cast<CSettingDependencyConditionCombination*>(m_operations[i].get());
+      if (combination == nullptr)
+        continue;
+
+      const std::set<std::string>& settings = combination->GetSettings();
+      m_settings.insert(settings.begin(), settings.end());
+    }
+  }
+
+  if (numValues < m_values.size())
+  {
+    for (size_t i = numValues; i < m_values.size(); i++)
+    {
+      if (m_values[i] == nullptr)
+        continue;
+
+      auto condition = static_cast<CSettingDependencyCondition*>(m_values[i].get());
+      if (condition == nullptr)
+        continue;
+
+      auto settingId = condition->GetSetting();
+      if (!settingId.empty())
+        m_settings.insert(settingId);
+    }
+  }
+
+  return true;
+}
+
+CSettingDependencyConditionCombination* CSettingDependencyConditionCombination::Add(
+    const CSettingDependencyConditionPtr& condition)
+{
+  if (condition != nullptr)
+  {
+    m_values.push_back(condition);
+
+    auto settingId = condition->GetSetting();
+    if (!settingId.empty())
+      m_settings.insert(settingId);
+  }
+
+  return this;
+}
+
+CSettingDependencyConditionCombination* CSettingDependencyConditionCombination::Add(
+    const CSettingDependencyConditionCombinationPtr& operation)
+{
+  if (operation != nullptr)
+  {
+    m_operations.push_back(operation);
+
+    const auto& settings = operation->GetSettings();
+    m_settings.insert(settings.begin(), settings.end());
+  }
+
+  return this;
+}
+
+Logger CSettingDependency::s_logger;
+
+CSettingDependency::CSettingDependency(CSettingsManager* settingsManager /* = nullptr */)
+  : CSettingDependency(SettingDependencyType::Unknown, settingsManager)
+{
+}
+
+CSettingDependency::CSettingDependency(SettingDependencyType type,
+                                       CSettingsManager* settingsManager /* = nullptr */)
+  : CSettingCondition(settingsManager), m_type(type)
+{
+  if (s_logger == nullptr)
+    s_logger = CServiceBroker::GetLogging().GetLogger("CSettingDependency");
+
+  m_operation = CBooleanLogicOperationPtr(new CSettingDependencyConditionCombination(m_settingsManager));
+}
+
+bool CSettingDependency::Deserialize(const TiXmlNode *node)
+{
+  if (node == nullptr)
+    return false;
+
+  auto elem = node->ToElement();
+  if (elem == nullptr)
+    return false;
+
+  auto strType = elem->Attribute(SETTING_XML_ATTR_TYPE);
+  if (strType == nullptr || strlen(strType) <= 0 || !setType(strType))
+  {
+    s_logger->warn("missing or unknown dependency type definition");
+    return false;
+  }
+
+  return CSettingCondition::Deserialize(node);
+}
+
+std::set<std::string> CSettingDependency::GetSettings() const
+{
+  if (m_operation == nullptr)
+    return std::set<std::string>();
+
+  auto combination = static_cast<CSettingDependencyConditionCombination*>(m_operation.get());
+  if (combination == nullptr)
+    return std::set<std::string>();
+
+  return combination->GetSettings();
+}
+
+CSettingDependencyConditionCombinationPtr CSettingDependency::And()
+{
+  if (m_operation == nullptr)
+    m_operation = CBooleanLogicOperationPtr(new CSettingDependencyConditionCombination(m_settingsManager));
+
+  m_operation->SetOperation(BooleanLogicOperationAnd);
+
+  return std::dynamic_pointer_cast<CSettingDependencyConditionCombination>(m_operation);
+}
+
+CSettingDependencyConditionCombinationPtr CSettingDependency::Or()
+{
+  if (m_operation == nullptr)
+    m_operation = CBooleanLogicOperationPtr(new CSettingDependencyConditionCombination(m_settingsManager));
+
+  m_operation->SetOperation(BooleanLogicOperationOr);
+
+  return std::dynamic_pointer_cast<CSettingDependencyConditionCombination>(m_operation);
+}
+
+bool CSettingDependency::setType(const std::string &type)
+{
+  if (StringUtils::EqualsNoCase(type, "enable"))
+    m_type = SettingDependencyType::Enable;
+  else if (StringUtils::EqualsNoCase(type, "update"))
+    m_type = SettingDependencyType::Update;
+  else if (StringUtils::EqualsNoCase(type, "visible"))
+    m_type = SettingDependencyType::Visible;
+  else
+    return false;
+
+  return true;
+}