text: /*-----------------------------------------------------------------------------------------------
  The MIT License (MIT)
  
  Copyright (c) 2014-2020 Kim Kulling
  
  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.
  -----------------------------------------------------------------------------------------------*/
  #include <openddlparser/DDLNode.h>
  #include <openddlparser/OpenDDLExport.h>
  #include <openddlparser/OpenDDLParser.h>
  #include <openddlparser/Value.h>
  
  #include <sstream>
  
  BEGIN_ODDLPARSER_NS
  
  struct DDLNodeIterator {
      const DDLNode::DllNodeList &m_childs;
      size_t m_idx;
  
      DDLNodeIterator(const DDLNode::DllNodeList &childs) :
              m_childs(childs), m_idx(0) {
          // empty
      }
  
      ~DDLNodeIterator() {
          // empty
      }
  
      bool getNext(DDLNode **node) {
          if (m_childs.size() > (m_idx + 1)) {
              m_idx++;
              *node = m_childs[m_idx];
              return true;
          }
  
          return false;
      }
  
  private:
      DDLNodeIterator() ddl_no_copy;
      DDLNodeIterator &operator=(const DDLNodeIterator &) ddl_no_copy;
  };
  
  static void writeLineEnd(std::string &statement) {
      statement += "\n";
  }
  
  OpenDDLExport::OpenDDLExport(IOStreamBase *stream) :
          m_stream(stream) {
      if (nullptr == m_stream) {
          m_stream = new IOStreamBase();
      }
  }
  
  OpenDDLExport::~OpenDDLExport() {
      if (nullptr != m_stream) {
          m_stream->close();
      }
      delete m_stream;
  }
  
  bool OpenDDLExport::exportContext(Context *ctx, const std::string &filename) {
      if (nullptr == ctx) {
          return false;
      }
  
      DDLNode *root(ctx->m_root);
      if (nullptr == root) {
          return true;
      }
  
      if (!filename.empty()) {
          if (!m_stream->open(filename)) {
              return false;
          }
      }
  
      const bool retValue(handleNode(root));
  
      return retValue;
  }
  
  bool OpenDDLExport::handleNode(DDLNode *node) {
      if (nullptr == node) {
          return true;
      }
  
      const DDLNode::DllNodeList &childs = node->getChildNodeList();
      if (childs.empty()) {
          return true;
      }
      DDLNode *current(nullptr);
      DDLNodeIterator it(childs);
      std::string statement;
      bool success(true);
      while (it.getNext(&current)) {
          if (nullptr != current) {
              success |= writeNode(current, statement);
              if (!handleNode(current)) {
                  success = false;
              }
          }
      }
  
      return success;
  }
  
  bool OpenDDLExport::writeToStream(const std::string &statement) {
      if (nullptr == m_stream) {
          return false;
      }
  
      if (!statement.empty()) {
          m_stream->write(statement);
      }
  
      return true;
  }
  
  bool OpenDDLExport::writeNode(DDLNode *node, std::string &statement) {
      writeNodeHeader(node, statement);
      if (node->hasProperties()) {
          writeProperties(node, statement);
      }
      writeLineEnd(statement);
  
      statement = "}";
      DataArrayList *al(node->getDataArrayList());
      if (nullptr != al) {
          writeValueType(al->m_dataList->m_type, al->m_numItems, statement);
          writeValueArray(al, statement);
      }
      Value *v(node->getValue());
      if (nullptr != v) {
          writeValueType(v->m_type, 1, statement);
          statement = "{";
          writeLineEnd(statement);
          writeValue(v, statement);
          statement = "}";
          writeLineEnd(statement);
      }
      statement = "}";
      writeLineEnd(statement);
  
      writeToStream(statement);
  
      return true;
  }
  
  bool OpenDDLExport::writeNodeHeader(DDLNode *node, std::string &statement) {
      if (nullptr == node) {
          return false;
      }
  
      statement += node->getType();
      const std::string &name(node->getName());
      if (!name.empty()) {
          statement += " ";
          statement += "$";
          statement += name;
      }
  
      return true;
  }
  
  bool OpenDDLExport::writeProperties(DDLNode *node, std::string &statement) {
      if (nullptr == node) {
          return false;
      }
  
      Property *prop(node->getProperties());
      // if no properties are there, return
      if (nullptr == prop) {
          return true;
      }
  
      if (nullptr != prop) {
          // for instance (attrib = "position", bla=2)
          statement += "(";
          bool first(true);
          while (nullptr != prop) {
              if (!first) {
                  statement += ", ";
              } else {
                  first = false;
              }
              statement += std::string(prop->m_key->m_buffer);
              statement += " = ";
              writeValue(prop->m_value, statement);
              prop = prop->m_next;
          }
  
          statement += ")";
      }
  
      return true;
  }
  
  bool OpenDDLExport::writeValueType(Value::ValueType type, size_t numItems, std::string &statement) {
      if (Value::ValueType::ddl_types_max == type) {
          return false;
      }
  
      const std::string typeStr(getTypeToken(type));
      statement += typeStr;
      // if we have an array to write
      if (numItems > 1) {
          statement += "[";
          char buffer[256];
          ::memset(buffer, '\0', 256 * sizeof(char));
          sprintf(buffer, "%d", static_cast<int>(numItems));
          statement += buffer;
          statement += "]";
      }
  
      return true;
  }
  
  bool OpenDDLExport::writeValue(Value *val, std::string &statement) {
      if (nullptr == val) {
          return false;
      }
  
      switch (val->m_type) {
          case Value::ValueType::ddl_bool:
              if (true == val->getBool()) {
                  statement += "true";
              } else {
                  statement += "false";
              }
              break;
          case Value::ValueType::ddl_int8 : {
              std::stringstream stream;
              const int i = static_cast<int>(val->getInt8());
              stream << i;
              statement += stream.str();
          } break;
          case Value::ValueType::ddl_int16: {
              std::stringstream stream;
              char buffer[256];
              ::memset(buffer, '\0', 256 * sizeof(char));
              sprintf(buffer, "%d", val->getInt16());
              statement += buffer;
          } break;
          case Value::ValueType::ddl_int32: {
              std::stringstream stream;
              char buffer[256];
              ::memset(buffer, '\0', 256 * sizeof(char));
              const int i = static_cast<int>(val->getInt32());
              sprintf(buffer, "%d", i);
              statement += buffer;
          } break;
          case Value::ValueType::ddl_int64: {
              std::stringstream stream;
              const int i = static_cast<int>(val->getInt64());
              stream << i;
              statement += stream.str();
          } break;
          case Value::ValueType::ddl_unsigned_int8: {
              std::stringstream stream;
              const int i = static_cast<unsigned int>(val->getUnsignedInt8());
              stream << i;
              statement += stream.str();
          } break;
          case Value::ValueType::ddl_unsigned_int16: {
              std::stringstream stream;
              const int i = static_cast<unsigned int>(val->getUnsignedInt16());
              stream << i;
              statement += stream.str();
          } break;
          case Value::ValueType::ddl_unsigned_int32: {
              std::stringstream stream;
              const int i = static_cast<unsigned int>(val->getUnsignedInt32());
              stream << i;
              statement += stream.str();
          } break;
          case Value::ValueType::ddl_unsigned_int64: {
              std::stringstream stream;
              const int i = static_cast<unsigned int>(val->getUnsignedInt64());
              stream << i;
              statement += stream.str();
          } break;
          case Value::ValueType::ddl_half:
              break;
          case Value::ValueType::ddl_float: {
              std::stringstream stream;
              stream << val->getFloat();
              statement += stream.str();
          } break;
          case Value::ValueType::ddl_double: {
              std::stringstream stream;
              stream << val->getDouble();
              statement += stream.str();
          } break;
          case Value::ValueType::ddl_string: {
              std::stringstream stream;
              stream << val->getString();
              statement += "\"";
              statement += stream.str();
              statement += "\"";
          } break;
          case Value::ValueType::ddl_ref:
              break;
          case Value::ValueType::ddl_none:
          case Value::ValueType::ddl_types_max:
          default:
              break;
      }
  
      return true;
  }
  
  bool OpenDDLExport::writeValueArray(DataArrayList *al, std::string &statement) {
      if (nullptr == al) {
          return false;
      }
  
      if (0 == al->m_numItems) {
          return true;
      }
  
      DataArrayList *nextDataArrayList = al;
      Value *nextValue(nextDataArrayList->m_dataList);
      while (nullptr != nextDataArrayList) {
          if (nullptr != nextDataArrayList) {
              statement += "{ ";
              nextValue = nextDataArrayList->m_dataList;
              size_t idx(0);
              while (nullptr != nextValue) {
                  if (idx > 0) {
                      statement += ", ";
                  }
                  writeValue(nextValue, statement);
                  nextValue = nextValue->m_next;
                  idx++;
              }
              statement += " }";
          }
          nextDataArrayList = nextDataArrayList->m_next;
      }
  
      return true;
  }
  
  END_ODDLPARSER_NS
  