xFileDataObjectString.cxx

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/**
 * PANDA 3D SOFTWARE
 * Copyright (c) Carnegie Mellon University.  All rights reserved.
 *
 * All use of this software is subject to the terms of the revised BSD
 * license.  You should have received a copy of this license along
 * with this source code in a file named "LICENSE."
 *
 * @file xFileDataObjectString.cxx
 * @author drose
 * @date 2004-10-08
 */

#include "xFileDataObjectString.h"
#include "string_utils.h"
#include "indent.h"

using std::string;

TypeHandle XFileDataObjectString::_type_handle;

/**
 *
 */
XFileDataObjectString::
XFileDataObjectString(const XFileDataDef *data_def, const string &value) :
  XFileDataObject(data_def),
  _value(value)
{
}

/**
 * Writes a suitable representation of this node to an .x file in text mode.
 */
void XFileDataObjectString::
output_data(std::ostream &out) const {
  enquote_string(out);
}

/**
 * Writes a suitable representation of this node to an .x file in text mode.
 */
void XFileDataObjectString::
write_data(std::ostream &out, int indent_level, const char *separator) const {
  indent(out, indent_level);
  enquote_string(out);
  out << separator << "\n";
}

/**
 * Sets the object's value as a string, if this is legal.
 */
void XFileDataObjectString::
set_string_value(const string &string_value) {
  _value = string_value;
}

/**
 * Returns the object's representation as a string, if it has one.
 */
string XFileDataObjectString::
get_string_value() const {
  return _value;
}

/**
 * Writes the string to the output stream without quotation marks, quoting
 * special characters as needed.
 */
void XFileDataObjectString::
enquote_string(std::ostream &out) const {
  // Actually, the XFile spec doesn't tell us how to escape special characters
  // within quotation marks.  We'll just take a stab in the dark here.

  out << '"';
  string::const_iterator si;
  for (si = _value.begin(); si != _value.end(); ++si) {
    switch (*si) {
    case '\n':
      out << "\\n";
      break;

    case '\r':
      out << "\\r";
      break;

    case '"':
    case '\\':
      out << '\\' << (*si);
      break;

    default:
      out << (*si);
    }
  }
  out << '"';
}