LCD_DocumentUtil.hh

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// ----------------------------------------------------------------------------
// $Id: LCD_DocumentUtil.hh,v 1.10 2004/02/03 12:45:21 uid561 Exp $
// ----------------------------------------------------------------------------
//
// -*-c++-*-
// LCD_DocumentUtil -- static utilities which more logically would
// belong with an element wrapper class

#ifndef LCD_DOCUMENTUTIL_H
#define LCD_DOCUMENTUTIL_H

#include "xercesc/dom/deprecated/DOM_Document.hpp"
#include "xercesc/dom/deprecated/DOM_Element.hpp"
#include "xercesc/dom/deprecated/DOMString.hpp"

// Attribute values are always returned as strings -- in fact, as unicode
// strings.  So supply translation routines to get from DOMString
// to double, int unsigned int, and char.
class LCD_DocumentUtil {
private:
  // For now and probably forever all unicode characters are actually
  // just ascii, so squeeze out extra byte to get "regular" characters
  static bool  squash(const XERCES_CPP_NAMESPACE::DOMString& domstr,
                      char *squashed,
                      int bufLen = m_MAX_STR_LEN);
public:
  static bool convertValue(const XERCES_CPP_NAMESPACE::DOMString& strVal,
                           double *val);
  static bool convertValue(const XERCES_CPP_NAMESPACE::DOMString& strVal,
                           int *val);
  static bool convertValue(const XERCES_CPP_NAMESPACE::DOMString& strVal,
                           unsigned int *val);
  static bool convertValue(const XERCES_CPP_NAMESPACE::DOMString& strVal,
                           bool *val);

  // Get first descendant element of specified elt. with specified tag name
  static XERCES_CPP_NAMESPACE::DOM_Element
  firstDesc(const XERCES_CPP_NAMESPACE::DOM_Element ancestor,
            const XERCES_CPP_NAMESPACE::DOMString& tagName);

  static XERCES_CPP_NAMESPACE::DOM_Element
  firstDesc(const XERCES_CPP_NAMESPACE::DOM_Element ancestor,
            const char* tagName);

  // caller supplies buffer for char string.
  static bool convertValue(const XERCES_CPP_NAMESPACE::DOMString& strVal,
                           char* buf, int bufLen) {
    return squash(strVal, buf, bufLen);
  }

private:
  static const int m_MAX_STR_LEN;
};
#endif

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