/* -*- mode: C++; tab-width: 4; c-basic-offset: 4; -*- */

/* AbiWord
 * Copyright (C) 1998 AbiSource, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 */

#include <time.h>

#include "ut_locale.h"
#include "ut_string.h"
#include "ut_types.h"
#include "ut_bytebuf.h"
#include "ut_base64.h"
#include "ut_debugmsg.h"
#include "ut_set.h"
#include "ut_string_class.h"
#include "ut_uuid.h"

#ifdef ENABLE_RESOURCE_MANAGER
#include "xap_ResourceManager.h"
#endif

#include "xap_App.h"

#include "pt_Types.h"

#include "pd_Document.h"
#include "pd_Style.h"

#include "pp_AttrProp.h"

#include "px_ChangeRecord.h"
#include "px_CR_Object.h"
#include "px_CR_Span.h"
#include "px_CR_Strux.h"

#include "fd_Field.h"

#include "fl_AutoNum.h"

#include "fp_PageSize.h"

#include "ie_exp_AbiWord_1.h"

#include "ap_Prefs.h"

// the fileformat that used to be defined here is now defined at the
// top of pd_Document.cpp

/*****************************************************************/
/*****************************************************************/

IE_Exp_AbiWord_1_Sniffer::IE_Exp_AbiWord_1_Sniffer ()
	: IE_ExpSniffer(IE_IMPEXPNAME_AWML11)
{
	// 
}

UT_Confidence_t IE_Exp_AbiWord_1_Sniffer::supportsMIME (const char * szMIME)
{
	if (UT_strcmp (szMIME, IE_MIME_AbiWord) == 0)
		{
			return UT_CONFIDENCE_GOOD;
		}
	return UT_CONFIDENCE_ZILCH;
}

bool IE_Exp_AbiWord_1_Sniffer::recognizeSuffix(const char * szSuffix)
{
	return (!UT_stricmp(szSuffix,".abw"));
}

UT_Error IE_Exp_AbiWord_1_Sniffer::constructExporter(PD_Document * pDocument,
													 IE_Exp ** ppie)
{
	IE_Exp_AbiWord_1 * p = new IE_Exp_AbiWord_1(pDocument);
	*ppie = p;
	return UT_OK;
}

bool IE_Exp_AbiWord_1_Sniffer::getDlgLabels(const char ** pszDesc,
											const char ** pszSuffixList,
											IEFileType * ft)
{
	*pszDesc = "AbiWord (.abw)";
	*pszSuffixList = "*.abw";
	*ft = getFileType();
	return true;
}

/*****************************************************************/
/*****************************************************************/

IE_Exp_AbiWord_1::IE_Exp_AbiWord_1(PD_Document * pDocument, bool isTemplate)
	: IE_Exp(pDocument), m_bIsTemplate(isTemplate), m_pListener(0)
{
	m_error = 0;
}

IE_Exp_AbiWord_1::~IE_Exp_AbiWord_1()
{
}

/*****************************************************************/
/*****************************************************************/

#ifdef ENABLE_RESOURCE_MANAGER
class s_AbiWord_1_Listener : public PL_Listener, XAP_ResourceManager::Writer
#else
class s_AbiWord_1_Listener : public PL_Listener
#endif
{
public:
	s_AbiWord_1_Listener(PD_Document * pDocument,
						IE_Exp_AbiWord_1 * pie, bool isTemplate);
	virtual ~s_AbiWord_1_Listener();

	virtual bool		populate(PL_StruxFmtHandle sfh,
								 const PX_ChangeRecord * pcr);

	virtual bool		populateStrux(PL_StruxDocHandle sdh,
									  const PX_ChangeRecord * pcr,
									  PL_StruxFmtHandle * psfh);

	virtual bool		change(PL_StruxFmtHandle sfh,
							   const PX_ChangeRecord * pcr);

	virtual bool		insertStrux(PL_StruxFmtHandle sfh,
									const PX_ChangeRecord * pcr,
									PL_StruxDocHandle sdh,
									PL_ListenerId lid,
									void (* pfnBindHandles)(PL_StruxDocHandle sdhNew,
															PL_ListenerId lid,
															PL_StruxFmtHandle sfhNew));

	virtual bool		signal(UT_uint32 iSignal);

	/* implementation of XAP_[Internal]Resource[Manager]::Writer
	 */
	UT_Error write_base64 (void * context, const char * base64, UT_uint32 length, bool final);

	UT_Error write_xml (void * context, const char * name, const char * const * atts);
	UT_Error write_xml (void * context, const char * name);

protected:
	void                _closeTable(void);
	void                _closeCell(void);
	void				_closeSection(void);
	void				_closeBlock(void);
	void				_closeSpan(void);
	void				_closeField(void);
	void				_closeHyperlink(void);
	void				_closeTag(void);
	void				_openSpan(PT_AttrPropIndex apiSpan);
	void				_openTag(const char * szPrefix, const char * szSuffix,
								 bool bNewLineAfter, PT_AttrPropIndex api,
								 bool bIgnoreProperties = false);
	void				_outputData(const UT_UCSChar * p, UT_uint32 length);
	void				_outputXMLChar(const XML_Char * data, UT_uint32 length);
	void				_handleStyles(void);
	void				_handleLists(void);
	void				_handlePageSize(void);
	void				_handleDataItems(void);
    void                _handleMetaData(void);
	void                _handleRevisions(void);
	void                _handleHistory(void);

	PD_Document *		m_pDocument;
	IE_Exp_AbiWord_1 *	m_pie;
	bool                m_bIsTemplate;
	bool				m_bInSection;
	bool				m_bInBlock;
	bool				m_bInSpan;
	//	bool				m_bInTag;
	bool				m_bInHyperlink;
	UT_sint32           m_iInTable;
	UT_sint32           m_iInCell;
	PT_AttrPropIndex	m_apiLastSpan;
    fd_Field *          m_pCurrentField;
	bool                m_bOpenChar;

private:
	UT_Set				m_pUsedImages;
	const XML_Char*		getObjectKey(const PT_AttrPropIndex& api, const XML_Char* key);
};

void s_AbiWord_1_Listener::_closeSection(void)
{
	if (!m_bInSection)
		return;

	m_pie->write("</section>\n");
	m_bInSection = false;
	return;
}


void s_AbiWord_1_Listener::_closeTable(void)
{
	if (m_iInTable == 0)
		return;

	m_pie->write("</table>\n");
	m_iInTable--;
	return;
}


void s_AbiWord_1_Listener::_closeCell(void)
{
	if (m_iInCell == 0)
		return;

	m_pie->write("</cell>\n");
	m_iInCell--;
	return;
}

void s_AbiWord_1_Listener::_closeBlock(void)
{
	if (!m_bInBlock)
		return;

	m_pie->write("</p>\n");
	m_bInBlock = false;
	return;
}

void s_AbiWord_1_Listener::_closeSpan(void)
{
	if (!m_bInSpan)
		return;

	_closeTag();
	m_bInSpan = false;
	return;
}

void s_AbiWord_1_Listener::_closeTag(void)
{
	if (m_bOpenChar) m_pie->write("</c>");
	m_bOpenChar = false;
}

void s_AbiWord_1_Listener::_closeField(void)
{
	if (!m_pCurrentField)
		return;
    _closeSpan();
	m_pie->write("</field>");
    m_pCurrentField = NULL;
	return;
}

void s_AbiWord_1_Listener::_closeHyperlink(void)
{
	if (!m_bInHyperlink)
		return;
    _closeSpan();
	m_pie->write("</a>");
    m_bInHyperlink = false;
	return;
}

void s_AbiWord_1_Listener::_openSpan(PT_AttrPropIndex apiSpan)
{
	if (m_bInSpan)
	{
		if (m_apiLastSpan == apiSpan)
			return;
		_closeSpan();
	}

	if (!apiSpan)				// don't write tag for empty A/P
		return;

	_openTag("c","",false,apiSpan);
	m_bInSpan = true;
	m_apiLastSpan = apiSpan;
	return;
}

void s_AbiWord_1_Listener::_openTag(const char * szPrefix, const char * szSuffix,
								   bool bNewLineAfter, PT_AttrPropIndex api,
								   bool bIgnoreProperties)
{
#ifdef ENABLE_RESOURCE_MANAGER
	UT_ASSERT_HARMLESS (!m_bOpenChar);

	UT_UTF8String tag("<");
	tag += szPrefix;

	const PP_AttrProp * pAP = NULL;
	bool bHaveProp = m_pDocument->getAttrProp (api, &pAP);
	if (bHaveProp && pAP)
		{
			const XML_Char * szName = 0;
			const XML_Char * szValue = 0;

			UT_uint32 k = 0;
			while (pAP->getNthAttribute (k++, szName, szValue))
				{
					tag += " ";
					tag += szName;
					tag += "=\"";

					if ((*szValue == '/') && ((strcmp (szName, "href") == 0) || (strcmp (szName, "xlink:href") == 0)))
						{
							XAP_ResourceManager & RM = m_pDocument->resourceManager ();
							XAP_ExternalResource * re = dynamic_cast<XAP_ExternalResource *>(RM.resource (szValue, false));
							if (re) tag += re->URL ();
						}
					else _outputXMLChar (szValue, strlen (szValue));

					tag += "\"";
				}
			if (!bIgnoreProperties)
				{
					k = 0;
					while (pAP->getNthProperty (k++, szName, szValue))
						{
							if (k == 1)
								{
									tag += " ";
									tag += PT_PROPS_ATTRIBUTE_NAME;
									tag += "=\"";
								}
							else tag += "; ";

							tag += szName;
							tag += ":";

							_outputXMLChar (szValue, strlen (szValue));
						}
					if (k > 1) tag += "\"";
				}
		}

	if (szSuffix)
		if (*szSuffix == '/')
			tag += "/";
	tag += ">";
	if (bNewLineAfter) tag += "\n";

	m_pie->write (tag.utf8_str (), tag.byteLength());

	if (strcmp (szPrefix, "c") == 0) m_bOpenChar = true;

#else /* ENABLE_RESOURCE_MANAGER */
	const PP_AttrProp * pAP = NULL;
	bool bHaveProp = m_pDocument->getAttrProp(api,&pAP);
	xxx_UT_DEBUGMSG(("_openTag: api %d, bHaveProp %d\n",api, bHaveProp));
	m_pie->write("<");

	UT_return_if_fail(szPrefix && *szPrefix);

	if(strcmp(szPrefix,"c")== 0)
		m_bOpenChar = true;
	m_pie->write(szPrefix);
	if (bHaveProp && pAP)
	{
		const XML_Char * szName;
		const XML_Char * szValue;
		UT_uint32 k = 0;

		while (pAP->getNthAttribute(k++,szName,szValue))
		{
			// TODO we force double-quotes on all values.
			// TODO consider scanning the value to see if it has one
			// TODO in it and escaping it or using single-quotes.
			// Let's also escape ampersands and other goodies.

			m_pie->write(" ");
			m_pie->write(static_cast<const char*>(szName));
			m_pie->write("=\"");
			_outputXMLChar(szValue, strlen(szValue));
			m_pie->write("\"");
		}
		if (!bIgnoreProperties && pAP->getNthProperty(0,szName,szValue))
		{
			m_pie->write(" ");
			m_pie->write(static_cast<const char*>(PT_PROPS_ATTRIBUTE_NAME));
			m_pie->write("=\"");
			m_pie->write(static_cast<const char*>(szName));
			m_pie->write(":");
			_outputXMLChar(szValue, strlen(szValue));
			UT_uint32 j = 1;
			while (pAP->getNthProperty(j++,szName,szValue))
			{
				// TMN: Patched this since I got an assert. What's the fix?
				// is it to write out a quoted empty string, or not to write
				// the property at all? For now I fixed it by the latter.
				if (*szValue)
				{
					m_pie->write("; ");
					m_pie->write(static_cast<const char*>(szName));
					m_pie->write(":");
					_outputXMLChar(szValue, strlen(szValue));
				}
			}
			m_pie->write("\"");
		}
	}

	if (szSuffix && *szSuffix)
		m_pie->write(szSuffix);
	m_pie->write(">");
	if (bNewLineAfter)
		m_pie->write("\n");

	//	m_bInTag = true;
#endif /* ENABLE_RESOURCE_MANAGER */
}

// This method is very much like _outputData but uses XML_Chars instead of UT_UCS4_Char's.
void s_AbiWord_1_Listener::_outputXMLChar(const XML_Char * data, UT_uint32 length)
{
	UT_String sBuf;
	const XML_Char * pData;

	UT_return_if_fail(sizeof(UT_Byte) == sizeof(char));

	for (pData=data; (pData<data+length); /**/)
	{
		switch (*pData)
		{
		case '<':
			sBuf += "&lt;";
			pData++;
			break;

		case '>':
			sBuf += "&gt;";
			pData++;
			break;

		case '&':
			sBuf += "&amp;";
			pData++;
			break;

		default:
			sBuf += (char)*pData++;
			break;
		}
	}

	m_pie->write(sBuf.c_str(),sBuf.size());
}

void s_AbiWord_1_Listener::_outputData(const UT_UCSChar * data, UT_uint32 length)
{
	UT_UTF8String sBuf;
	const UT_UCSChar * pData;

	UT_return_if_fail(sizeof(UT_Byte) == sizeof(char));

	for (pData=data; (pData<data+length); /**/)
	{
		switch (*pData)
		{
		case '<':
			sBuf += "&lt;";
			pData++;
			break;

		case '>':
			sBuf += "&gt;";
			pData++;
			break;

		case '&':
			sBuf += "&amp;";
			pData++;
			break;

		case UCS_LF:					// LF -- representing a Forced-Line-Break
			sBuf += "<br/>";
			pData++;
			break;

		case UCS_VTAB:					// VTAB -- representing a Forced-Column-Break
			sBuf += "<cbr/>";
			pData++;
			break;

		case UCS_TAB:
			sBuf += "\t";
			pData++;
			break;

		case UCS_FF:					// FF -- representing a Forced-Page-Break
			sBuf += "<pbr/>";
			pData++;
			break;

		default:
			if (*pData < 0x20)         // Silently eat these characters.
				pData++;
			else
				{
					sBuf.appendUCS4 (pData, 1);
					pData++;
				}
		}
	}

	m_pie->write(sBuf.utf8_str(),sBuf.byteLength());
}

s_AbiWord_1_Listener::s_AbiWord_1_Listener(PD_Document * pDocument,
										   IE_Exp_AbiWord_1 * pie,
										   bool isTemplate)
	: m_pUsedImages(ut_lexico_lesser)
{
	m_bIsTemplate = isTemplate;
	m_pDocument = pDocument;
	m_pie = pie;
	m_bInSection = false;
	m_bInBlock = false;
	m_bInSpan = false;
	//	m_bInTag = false;
	m_bInHyperlink = false;
	m_bOpenChar = false;
	m_apiLastSpan = 0;
	m_pCurrentField = 0;
	m_iInTable = 0;
	m_iInCell = 0;

	m_pie->write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
	m_pie->write ("<!DOCTYPE abiword PUBLIC \"-//ABISOURCE//DTD AWML 1.0 Strict//EN\" \"http://www.abisource.com/awml.dtd\">\n");

	/***********************************************************************************

        The fixed attributes of the <abiword> token that used to reside
        here are now found in PD_Document::setAttrProp()

	************************************************************************************/

	const XML_Char *attr[3];
	attr[0] = "template";
	attr[1] = m_bIsTemplate ? "true" : "false";
	attr[2] = NULL;
	
	pDocument->setAttributes(attr);

	_openTag("abiword", NULL, true, pDocument->getAttrPropIndex(),false);

	// NOTE we output the following preamble in XML comments.
	// NOTE this information is for human viewing only.

	m_pie->write("<!-- ======================================================================== -->\n");
	m_pie->write("<!-- This file is an AbiWord document.                                        -->\n");
	m_pie->write("<!-- AbiWord is a free, Open Source word processor.                           -->\n");
	m_pie->write("<!-- More information about AbiWord is available at http://www.abisource.com/ -->\n");
	m_pie->write("<!-- You should not edit this file by hand.                                   -->\n");
	m_pie->write("<!-- ======================================================================== -->\n\n");

	// end of preamble.
	// now we begin the actual document.

	_handleMetaData();
	_handleHistory();
	_handleRevisions();
	_handleStyles();
	_handleLists();
	_handlePageSize();
}

s_AbiWord_1_Listener::~s_AbiWord_1_Listener()
{
	_closeSpan();
	_closeField();
	_closeHyperlink();
	_closeBlock();
	_closeSection();
	_handleDataItems();

	m_pie->write("</abiword>\n");
}


const XML_Char*
s_AbiWord_1_Listener::getObjectKey(const PT_AttrPropIndex& api, const XML_Char* key)
{
	const PP_AttrProp * pAP = NULL;
	bool bHaveProp = m_pDocument->getAttrProp(api,&pAP);
	if (bHaveProp && pAP)
	{
		const XML_Char* value;
		if (pAP->getAttribute(key, value))
			return value;
	}

	return 0;
}


bool s_AbiWord_1_Listener::populate(PL_StruxFmtHandle /*sfh*/,
									  const PX_ChangeRecord * pcr)
{
	switch (pcr->getType())
	{
	case PX_ChangeRecord::PXT_InsertSpan:
		{
			const PX_ChangeRecord_Span * pcrs = static_cast<const PX_ChangeRecord_Span *> (pcr);
            if (pcrs->getField()!=m_pCurrentField)
            {
                _closeField();
            }
			PT_AttrPropIndex api = pcr->getIndexAP();
			_openSpan(api);

			PT_BufIndex bi = pcrs->getBufIndex();
			_outputData(m_pDocument->getPointer(bi),pcrs->getLength());

			return true;
		}

	case PX_ChangeRecord::PXT_InsertObject:
		{
			const PX_ChangeRecord_Object * pcro = static_cast<const PX_ChangeRecord_Object *> (pcr);
			PT_AttrPropIndex api = pcr->getIndexAP();
			switch (pcro->getObjectType())
			{
			case PTO_Image:
				{
				_closeSpan();
                _closeField();
#ifndef ENABLE_RESOURCE_MANAGER
				const XML_Char* image_name = getObjectKey(api, static_cast<const XML_Char*>("dataid"));
				if (image_name)
					m_pUsedImages.insert(image_name);
#endif
				_openTag("image","/",false,api);

				return true;
				}
			case PTO_Field:
                {
                    _closeSpan();
                    _closeField();
                    _openTag("field","",false,api);
                    m_pCurrentField = pcro->getField();
                    UT_ASSERT_HARMLESS(m_pCurrentField);
                    return true;
                }
   			case PTO_Bookmark:
   				{
   					_closeSpan();
   					_closeField();
   					_openTag("bookmark", "/",false, api,true);
   					return true;
   				}

   			case PTO_Hyperlink:
   				{
   					_closeSpan();
   					_closeField();
					const PP_AttrProp * pAP = NULL;
					m_pDocument->getAttrProp(api,&pAP);
					const XML_Char * pName;
					const XML_Char * pValue;
					bool bFound = false;
					UT_uint32 k = 0;

					while(pAP->getNthAttribute(k++, pName, pValue))
					{
						bFound = (0 == UT_XML_strnicmp(pName,"xlink:href",10));
						if(bFound)
							break;
					}

					if(bFound)
					{
						//this is the start of the hyperlink
   						_openTag("a", "",false, api,true);
   						m_bInHyperlink = true;
   					}
   					else
   					{
   						_closeHyperlink();
   					}


   					return true;

   				}


			default:
				UT_ASSERT_NOT_REACHED();
				return false;
			}
		}

	case PX_ChangeRecord::PXT_InsertFmtMark:
#if 0
		// fmt marks are temporary placeholders for props and
		// attributes and should not be saved
		if(m_bOpenChar)
			_closeTag();
		_openTag("c","",false,pcr->getIndexAP());
		_closeTag();
#endif
		return true;

	default:
	  UT_ASSERT_NOT_REACHED();
		return false;
	}
}

bool s_AbiWord_1_Listener::populateStrux(PL_StruxDocHandle /*sdh*/,
										   const PX_ChangeRecord * pcr,
										   PL_StruxFmtHandle * psfh)
{
	UT_return_val_if_fail(pcr->getType() == PX_ChangeRecord::PXT_InsertStrux, false);
	const PX_ChangeRecord_Strux * pcrx = static_cast<const PX_ChangeRecord_Strux *> (pcr);
	*psfh = 0;							// we don't need it.
#ifndef ENABLE_RESOURCE_MANAGER
	PT_AttrPropIndex api = pcr->getIndexAP();
	const XML_Char* image_name = getObjectKey(api, static_cast<const XML_Char*>(PT_STRUX_IMAGE_DATAID));
	if (image_name)
		m_pUsedImages.insert(image_name);
#endif

	switch (pcrx->getStruxType())
	{
	case PTX_Section:
	case PTX_SectionHdrFtr:
		{
			_closeSpan();
            _closeField();
            _closeHyperlink();
			_closeBlock();
			_closeSection();
			_openTag("section","",true,pcr->getIndexAP());
			m_bInSection = true;
			return true;
		}
	case PTX_SectionTable:
		{
			_closeSpan();
            _closeField();
            _closeHyperlink();
			_closeBlock();
			_openTag("table","",true,pcr->getIndexAP());
			m_iInTable++;
			return true;
		}
	case PTX_SectionCell:
		{
			_closeSpan();
            _closeField();
            _closeHyperlink();
			_closeBlock();
			_openTag("cell","",true,pcr->getIndexAP());
			m_iInCell++;
			return true;
		}
	case PTX_SectionFootnote:
		{
			_closeSpan();
            _closeField();
            _closeHyperlink();
			m_bInBlock = false;
			_openTag("foot","",true,pcr->getIndexAP());
			return true;
		}
	case PTX_SectionEndnote:
		{
			_closeSpan();
            _closeField();
            _closeHyperlink();
			m_bInBlock = false;
			_openTag("endnote","",true,pcr->getIndexAP());
			return true;
		}
	case PTX_SectionTOC:
		{
			_closeSpan();
            _closeField();
            _closeHyperlink();
			_closeBlock();
			m_bInBlock = false;
			_openTag("toc","",true,pcr->getIndexAP());
			return true;
		}
	case PTX_SectionMarginnote:
		{
			_closeSpan();
            _closeField();
            _closeHyperlink();
			_closeBlock();
			_openTag("margin","",true,pcr->getIndexAP());
			return true;
		}
	case PTX_SectionFrame:
		{
			_closeSpan();
            _closeField();
            _closeHyperlink();
			_closeBlock();
			_openTag("frame","",true,pcr->getIndexAP());
			return true;
		}
	case PTX_EndTable:
		{
			_closeSpan();
            _closeField();
            _closeHyperlink();
			_closeBlock();
			_closeTable();
			return true;
		}
	case PTX_EndCell:
		{
			_closeSpan();
            _closeField();
            _closeHyperlink();
			_closeBlock();
			_closeCell();
			return true;
		}
	case PTX_EndFootnote:
		{
			_closeSpan();
            _closeField();
            _closeHyperlink();
			_closeBlock();
			m_pie->write("</foot>");
			m_bInBlock = true;
			return true;
		}
	case PTX_EndEndnote:
		{
			_closeSpan();
            _closeField();
            _closeHyperlink();
			_closeBlock();
			m_pie->write("</endnote>");
			m_bInBlock = true;
			return true;
		}
	case PTX_EndTOC:
		{
			_closeSpan();
            _closeField();
            _closeHyperlink();
			_closeBlock();
			m_pie->write("</toc>");
			return true;
		}
	case PTX_EndMarginnote:
		{
			_closeSpan();
            _closeField();
            _closeHyperlink();
			_closeBlock();
			return true;
		}
	case PTX_EndFrame:
		{
			_closeSpan();
            _closeField();
            _closeHyperlink();
			_closeBlock();
			m_pie->write("</frame>");
			return true;
		}
	case PTX_Block:
		{
			_closeSpan();
            _closeField();
			_closeHyperlink();
			_closeBlock();
			_openTag("p","",false,pcr->getIndexAP());
			m_bInBlock = true;
			return true;
		}

	default:
	  UT_ASSERT_NOT_REACHED();
		return false;
	}
}

bool s_AbiWord_1_Listener::change(PL_StruxFmtHandle /*sfh*/,
									const PX_ChangeRecord * /*pcr*/)
{
  UT_ASSERT_NOT_REACHED();
	return false;
}

bool s_AbiWord_1_Listener::insertStrux(PL_StruxFmtHandle /*sfh*/,
										  const PX_ChangeRecord * /*pcr*/,
										  PL_StruxDocHandle /*sdh*/,
										  PL_ListenerId /* lid */,
										  void (* /*pfnBindHandles*/)(PL_StruxDocHandle /* sdhNew */,
																	  PL_ListenerId /* lid */,
																	  PL_StruxFmtHandle /* sfhNew */))
{
	UT_ASSERT_NOT_REACHED();						// this function is not used.
	return false;
}

bool s_AbiWord_1_Listener::signal(UT_uint32 /* iSignal */)
{
  UT_ASSERT_NOT_REACHED();
	return false;
}

/* base64-encoded object data
 */
UT_Error s_AbiWord_1_Listener::write_base64 (void * /*context*/, const char * base64, UT_uint32 length, bool /*final*/)
{
	m_pie->write (base64, length);
	m_pie->write ("\n");

	return UT_OK;
}

/* start tag & attributes
 */
UT_Error s_AbiWord_1_Listener::write_xml (void * /*context*/, const char * name, const char * const * atts)
{
	UT_UTF8String tag(" <");

	tag += name;

	const char * const * attr = atts;
	while (*attr)
		{
			tag += " ";
			tag += *attr++;
			tag += "=\"";
			tag += *attr++;
			tag += "\"";
		}
	tag += ">\n";

	m_pie->write (tag.utf8_str (), tag.byteLength());

	return UT_OK;
}

/* end tag
 */
UT_Error s_AbiWord_1_Listener::write_xml (void * /*context*/, const char * name)
{
	UT_UTF8String tag(" </");

	tag += name;
	tag += ">\n";

	m_pie->write (tag.utf8_str (), tag.byteLength());

	return UT_OK;
}

/*****************************************************************/
/*****************************************************************/

UT_Error IE_Exp_AbiWord_1::_writeDocument(void)
{
	m_pListener = new s_AbiWord_1_Listener(getDoc(),this, m_bIsTemplate);
	if (!m_pListener)
		return UT_IE_NOMEMORY;

	if (getDocRange())
	{
		if(!getDoc()->tellListenerSubset(static_cast<PL_Listener *>(m_pListener),getDocRange()))
			return UT_ERROR;
	}
	else
	{
		if (!getDoc()->tellListener(static_cast<PL_Listener *>(m_pListener)))
			return UT_ERROR;
	}
	
	delete m_pListener;

	m_pListener = NULL;

	return ((m_error) ? UT_IE_COULDNOTWRITE : UT_OK);
}

/*****************************************************************/
/*****************************************************************/

void s_AbiWord_1_Listener::_handleStyles(void)
{
	bool bWroteOpenStyleSection = false;

	const char * szName = NULL;
	const PD_Style * pStyle=NULL;
	UT_GenericVector<PD_Style *> vecStyles;
	m_pDocument->getAllUsedStyles(&vecStyles);
	UT_uint32 k = 0;
	for (k=0; k < vecStyles.getItemCount(); k++)
	{
		pStyle = vecStyles.getNthItem(k);
		if (!bWroteOpenStyleSection)
		{
			m_pie->write("<styles>\n");
			bWroteOpenStyleSection = true;
		}

		PT_AttrPropIndex api = pStyle->getIndexAP();
		_openTag("s","/",true,api);
	}

	for (k=0; m_pDocument->enumStyles(k, &szName, &pStyle); k++)
	{
		if (!pStyle->isUserDefined() || (vecStyles.findItem(const_cast<PD_Style*>(pStyle))) >= 0)
			continue;

		if (!bWroteOpenStyleSection)
		{
			m_pie->write("<styles>\n");
			bWroteOpenStyleSection = true;
		}

		PT_AttrPropIndex api = pStyle->getIndexAP();
		_openTag("s","/",true,api);
	}

	if (bWroteOpenStyleSection)
		m_pie->write("</styles>\n");

	return;
}

void s_AbiWord_1_Listener::_handleLists(void)
{
	bool bWroteOpenListSection = false;

 	//const char * szID;
	//const char * szPid;
	//const char * szProps;

#define LCheck(str) (0 == UT_strcmp(attr[0], str))

	fl_AutoNum * pAutoNum;
	for (UT_uint32 k = 0; (m_pDocument->enumLists(k, &pAutoNum )); k++)
	{
		const char ** attr = NULL, ** attr0 = NULL;

		if (pAutoNum->isEmpty() == true)
			continue;

		if (!bWroteOpenListSection)
		{
			m_pie->write("<lists>\n");
			bWroteOpenListSection = true;
		}
		m_pie->write("<l");
		for (attr0 = attr = pAutoNum->getAttributes(); (*attr); attr++)
		{
			if (LCheck("id") || LCheck("parentid") || LCheck("type") || LCheck("start-value") || LCheck("list-delim") || LCheck("list-decimal"))
			{
				m_pie->write(" ");
				m_pie->write(attr[0]);
				m_pie->write("=\"");
				m_pie->write(attr[1]);
				m_pie->write("\"");
			}
		}
		m_pie->write("/>\n");
		// No, no, you can't free attr and expect good things to happen.
		FREEP(attr0);
	}


#undef LCheck

	if (bWroteOpenListSection)
		m_pie->write("</lists>\n");

	return;
}

void s_AbiWord_1_Listener::_handleMetaData(void)
{
	if (m_pie->isCopying ())
		return;

  // set all of the important meta-data props

  m_pDocument->setMetaDataProp ( PD_META_KEY_GENERATOR, UT_UTF8String("AbiWord") ) ;
  m_pDocument->setMetaDataProp ( PD_META_KEY_FORMAT,    UT_UTF8String(IE_MIME_AbiWord) ) ;

#if 0
  // get the saved time, remove trailing newline
  time_t now = time ( NULL ) ;
  UT_String now_str ( ctime(&now) ) ;
  now_str = now_str.substr ( 0, now_str.size() -1 ) ;
  m_pDocument->setMetaDataProp ( PD_META_KEY_DATE_LAST_CHANGED, UT_UTF8String(now_str.c_str()) ) ;
#endif

  // TODO: set dc.date and abiword.date_created if document is new (i.e. first save)

  UT_GenericStringMap<UT_UTF8String*> & ref = m_pDocument->getMetaData() ;

  // don't print out a thing
  if ( ref.size () == 0 )
    return ;

  m_pie->write("<metadata>\n");

  UT_GenericStringMap<UT_UTF8String*>::UT_Cursor cursor ( &ref ) ;

  const UT_UTF8String * val = NULL ;
  for ( val = cursor.first(); cursor.is_valid(); val = cursor.next () )
    {
      if ( val )
	{
	  const UT_UTF8String *stringval = val;
	  if( stringval->size () > 0 )
	    {
	      m_pie->write( "<m key=\"" ) ;
	      _outputXMLChar ( cursor.key().c_str(), cursor.key().size() ) ;
	      m_pie->write ( "\">" ) ;
	      _outputXMLChar ( stringval->utf8_str(), stringval->byteLength() ) ;
	      m_pie->write ( "</m>\n" ) ;
	    }
	}
    }

  m_pie->write("</metadata>\n");
}

void s_AbiWord_1_Listener::_handlePageSize(void)
{
  //
  // Code to write out the PageSize Definitions to disk
  //
	m_pie->write("<pagesize pagetype=\"");
	m_pie->write(m_pDocument->m_docPageSize.getPredefinedName());
	m_pie->write("\"");

	m_pie->write(" orientation=\"");
	if(m_pDocument->m_docPageSize.isPortrait() == true)
	        m_pie->write("portrait\"");
	else
	        m_pie->write("landscape\"");
	UT_Dimension docUnit = m_pDocument->m_docPageSize.getDims();

	UT_LocaleTransactor t(LC_NUMERIC, "C");
	m_pie->write( UT_String_sprintf(" width=\"%f\"", m_pDocument->m_docPageSize.Width(docUnit)).c_str() );
	m_pie->write( UT_String_sprintf(" height=\"%f\"",m_pDocument->m_docPageSize.Height(docUnit)).c_str() );
	m_pie->write(" units=\"");
	m_pie->write(UT_dimensionName(docUnit));
	m_pie->write("\"");
	m_pie->write( UT_String_sprintf(" page-scale=\"%f\"/>\n",m_pDocument->m_docPageSize.getScale()).c_str() );
}

void s_AbiWord_1_Listener::_handleDataItems(void)
{
#ifdef ENABLE_RESOURCE_MANAGER
	m_pDocument->resourceManager().write_xml (0, *this);
#else
	bool bWroteOpenDataSection = false;

	const char * szName;
   	const char * szMimeType;
	const UT_ByteBuf * pByteBuf;

	UT_ByteBuf bbEncoded(1024);
	UT_Set::Iterator end(m_pUsedImages.end());

	for (UT_uint32 k=0;
		 (m_pDocument->enumDataItems(k,NULL,&szName,&pByteBuf,reinterpret_cast<const void**>(&szMimeType)));
		 k++)
	{
		UT_Set::Iterator it(m_pUsedImages.find_if(szName, ut_lexico_equal));
		if (it == end)
		{
			// This data item is no longer used. Don't output it to a file.
			UT_DEBUGMSG(("item #%s# not found in set:\n", szName));
			continue;
		}
		else
		{
			UT_DEBUGMSG(("item #%s# found:\n", szName));
			m_pUsedImages.erase(it);
		}

		if (!bWroteOpenDataSection)
		{
			m_pie->write("<data>\n");
			bWroteOpenDataSection = true;
		}

	   	bool status = false;
	   	bool encoded = true;

		if (szMimeType && (UT_strcmp(szMimeType, "image/svg-xml") == 0 || UT_strcmp(szMimeType, "text/mathml") == 0))
	    {
		   bbEncoded.truncate(0);
		   bbEncoded.append(reinterpret_cast<const UT_Byte*>("<![CDATA["), 9);
		   UT_uint32 off = 0;
		   UT_uint32 len = pByteBuf->getLength();
		   const UT_Byte * buf = pByteBuf->getPointer(0);
		   while (off < len) {
		      if (buf[off] == ']' && buf[off+1] == ']' && buf[off+2] == '>') {
			 bbEncoded.append(buf, off-1);
			 bbEncoded.append(reinterpret_cast<const UT_Byte*>("]]&gt;"), 6);
			 off += 3;
			 len -= off;
			 buf = pByteBuf->getPointer(off);
			 off = 0;
			 continue;
		      }
		      off++;
		   }
		   bbEncoded.append(buf, off);
		   bbEncoded.append(reinterpret_cast<const UT_Byte*>("]]>\n"), 4);
		   status = true;
		   encoded = false;
		}
	   	else
		{
		   status = UT_Base64Encode(&bbEncoded, pByteBuf);
		   encoded = true;
		}

	   	if (status)
	    {
	   		m_pie->write("<d name=\"");
			// We assume that UT_XML_Char is equivalent to char.
			// That's not really a good assumption, but, hey.
			// TODO: make szName, szMimeType be UT_XML_Chars.
			_outputXMLChar(szName, strlen(szName));
		   	if (szMimeType)
			{
			   m_pie->write("\" mime-type=\"");
			   _outputXMLChar(szMimeType, strlen(szMimeType));
			}
		   	if (encoded)
		    {
			   	m_pie->write("\" base64=\"yes\">\n");
				// break up the Base64 blob as a series lines
				// like MIME does.

				UT_uint32 jLimit = bbEncoded.getLength();
				UT_uint32 jSize;
				UT_uint32 j;
				for (j=0; j<jLimit; j+=72)
				{
					jSize = UT_MIN(72,(jLimit-j));
					m_pie->write(reinterpret_cast<const char *>(bbEncoded.getPointer(j)),jSize);
					m_pie->write("\n");
				}
			}
		   	else
		    {
		     	m_pie->write("\" base64=\"no\">\n");
			   	m_pie->write(reinterpret_cast<const char*>(bbEncoded.getPointer(0)), bbEncoded.getLength());
			}
			m_pie->write("</d>\n");
		}
	}

	if (bWroteOpenDataSection)
		m_pie->write("</data>\n");
#endif
}

void s_AbiWord_1_Listener::_handleRevisions(void)
{
	bool bWroteOpenRevisionsSection = false;

	const AD_Revision * pRev=NULL;

	const UT_GenericVector<AD_Revision*> & vRevisions = m_pDocument->getRevisions();

	UT_uint32 k = 0;
	for (k=0; k < vRevisions.getItemCount(); k++)
	{
		pRev = vRevisions.getNthItem(k);
		UT_return_if_fail(pRev);
		
		UT_String s;
		
		if (!bWroteOpenRevisionsSection)
		{
			UT_String_sprintf(s, "<revisions show=\"%d\" mark=\"%d\" show-level=\"%d\" auto=\"%d\">\n",
							  m_pDocument->isShowRevisions(),
							  m_pDocument->isMarkRevisions(),
							  m_pDocument->getShowRevisionId(),
							  m_pDocument->isAutoRevisioning());
			
			m_pie->write(s.c_str());
			bWroteOpenRevisionsSection = true;
		}

		UT_String_sprintf(s, "<r id=\"%d\" time-started=\"%d\" version=\"%d\">",
						  pRev->getId(),
						  pRev->getStartTime(),
						  pRev->getVersion());
		
		m_pie->write(s.c_str());

		if(pRev->getDescription())
		{
			_outputData(pRev->getDescription(), UT_UCS4_strlen(pRev->getDescription()));
		}
		

		m_pie->write("</r>\n");
	}

	if (bWroteOpenRevisionsSection)
		m_pie->write("</revisions>\n");

	return;
}

void s_AbiWord_1_Listener::_handleHistory(void)
{
	bool bWroteOpenSection = false;

	UT_uint32 k = 0;
	const UT_uint32 iCount = m_pDocument->getHistoryCount();
	
	for (k=0; k < iCount; k++)
	{
		UT_uint32 iVersion  =  m_pDocument->getHistoryNthId(k);
		const UT_UUID& UID  =  m_pDocument->getHistoryNthUID(k);
		time_t tStarted     =  m_pDocument->getHistoryNthTimeStarted(k);
		bool bAuto          =  m_pDocument->getHistoryNthAutoRevisioned(k);
		
		UT_UTF8String s, hUid;
		UID.toString(hUid);
		
		
		if (!bWroteOpenSection)
		{
			UT_UTF8String_sprintf(s, "<history version=\"%d\" edit-time=\"%d\" last-saved=\"%d\" "
							     "uid=\"%s\">\n",
							  m_pDocument->getDocVersion(),
							  m_pDocument->getEditTime(),
							  m_pDocument->getLastSavedTime(),
							  m_pDocument->getDocUUIDString());
			
			m_pie->write(s.utf8_str());
			bWroteOpenSection = true;
		}

		UT_UTF8String_sprintf(s, "<version id=\"%d\" started=\"%d\" uid=\"%s\" auto=\"%d\"/>\n",
						  iVersion, tStarted, hUid.utf8_str(),bAuto);
		
		m_pie->write(s.utf8_str());
	}

	if (bWroteOpenSection)
		m_pie->write("</history>\n");

	return;
}
