root/feedmelinks/include/tidy/tidy.h

#ifndef __TIDY_H__
#define __TIDY_H__

/** @file tidy.h - Defines HTML Tidy API implemented by tidy library.

  Public interface is const-correct and doesn't explicitly depend
  on any globals.  Thus, thread-safety may be introduced w/out
  changing the interface.

  Looking ahead to a C++ wrapper, C functions always pass 
  this-equivalent as 1st arg.


  Copyright (c) 1998-2005 World Wide Web Consortium
  (Massachusetts Institute of Technology, European Research 
  Consortium for Informatics and Mathematics, Keio University).
  All Rights Reserved.

  CVS Info :

    $Author: arnaud02 $ 
    $Date: 2005/04/08 09:11:12 $ 
    $Revision: 1.13 $ 

  Contributing Author(s):

     Dave Raggett <dsr@w3.org>

  The contributing author(s) would like to thank all those who
  helped with testing, bug fixes and suggestions for improvements. 
  This wouldn't have been possible without your help.

  COPYRIGHT NOTICE:
 
  This software and documentation is provided "as is," and
  the copyright holders and contributing author(s) make no
  representations or warranties, express or implied, including
  but not limited to, warranties of merchantability or fitness
  for any particular purpose or that the use of the software or
  documentation will not infringe any third party patents,
  copyrights, trademarks or other rights. 

  The copyright holders and contributing author(s) will not be held
  liable for any direct, indirect, special or consequential damages
  arising out of any use of the software or documentation, even if
  advised of the possibility of such damage.

  Permission is hereby granted to use, copy, modify, and distribute
  this source code, or portions hereof, documentation and executables,
  for any purpose, without fee, subject to the following restrictions:

  1. The origin of this source code must not be misrepresented.
  2. Altered versions must be plainly marked as such and must
     not be misrepresented as being the original source.
  3. This Copyright notice may not be removed or altered from any
     source or altered source distribution.
 
  The copyright holders and contributing author(s) specifically
  permit, without fee, and encourage the use of this source code
  as a component for supporting the Hypertext Markup Language in
  commercial products. If you use this source code in a product,
  acknowledgment is not required but would be appreciated.


  Created 2001-05-20 by Charles Reitzel
  Updated 2002-07-01 by Charles Reitzel - 1st Implementation

*/

#include "platform.h"
#include "tidyenum.h"

#ifdef __cplusplus
extern "C" {
#endif

/** @defgroup Opaque Opaque Types
**
** Cast to implementation types within lib.
** Reduces inter-dependencies/conflicts w/ application code.
** @{
*/

/** @struct TidyDoc
**  Opaque document datatype
*/
opaque_type( TidyDoc );

/** @struct TidyOption
**  Opaque option datatype
*/
opaque_type( TidyOption );

/** @struct TidyNode
**  Opaque node datatype
*/
opaque_type( TidyNode );

/** @struct TidyAttr
**  Opaque attribute datatype
*/
opaque_type( TidyAttr );

/** @} */

TIDY_STRUCT struct _TidyBuffer;
typedef struct _TidyBuffer TidyBuffer;


/** @defgroup Basic Basic Operations
**
** Tidy public interface
**
** Several functions return an integer document status:
**
** <pre>
** 0    -> SUCCESS
** >0   -> 1 == TIDY WARNING, 2 == TIDY ERROR
** <0   -> SEVERE ERROR
** </pre>
** 
The following is a short example program.

<pre>
#include &lt;tidy.h&gt;
#include &lt;buffio.h&gt;
#include &lt;stdio.h&gt;
#include &lt;errno.h&gt;


int main(int argc, char **argv )
{
  const char* input = "&lt;title&gt;Foo&lt;/title&gt;&lt;p&gt;Foo!";
  TidyBuffer output = {0};
  TidyBuffer errbuf = {0};
  int rc = -1;
  Bool ok;

  TidyDoc tdoc = tidyCreate();                     // Initialize "document"
  printf( "Tidying:\t\%s\\n", input );

  ok = tidyOptSetBool( tdoc, TidyXhtmlOut, yes );  // Convert to XHTML
  if ( ok )
    rc = tidySetErrorBuffer( tdoc, &amp;errbuf );      // Capture diagnostics
  if ( rc &gt;= 0 )
    rc = tidyParseString( tdoc, input );           // Parse the input
  if ( rc &gt;= 0 )
    rc = tidyCleanAndRepair( tdoc );               // Tidy it up!
  if ( rc &gt;= 0 )
    rc = tidyRunDiagnostics( tdoc );               // Kvetch
  if ( rc &gt; 1 )                                    // If error, force output.
    rc = ( tidyOptSetBool(tdoc, TidyForceOutput, yes) ? rc : -1 );
  if ( rc &gt;= 0 )
    rc = tidySaveBuffer( tdoc, &amp;output );          // Pretty Print

  if ( rc &gt;= 0 )
  {
    if ( rc &gt; 0 )
      printf( "\\nDiagnostics:\\n\\n\%s", errbuf.bp );
    printf( "\\nAnd here is the result:\\n\\n\%s", output.bp );
  }
  else
    printf( "A severe error (\%d) occurred.\\n", rc );

  tidyBufFree( &amp;output );
  tidyBufFree( &amp;errbuf );
  tidyRelease( tdoc );
  return rc;
}
</pre>
** @{
*/

TIDY_EXPORT TidyDoc TIDY_CALL     tidyCreate(void);
TIDY_EXPORT void TIDY_CALL        tidyRelease( TidyDoc tdoc );

/** Let application store a chunk of data w/ each Tidy instance.
**  Useful for callbacks.
*/
TIDY_EXPORT void TIDY_CALL        tidySetAppData( TidyDoc tdoc, ulong appData );

/** Get application data set previously */
TIDY_EXPORT ulong TIDY_CALL       tidyGetAppData( TidyDoc tdoc );

/** Get release date (version) for current library */
TIDY_EXPORT ctmbstr TIDY_CALL     tidyReleaseDate(void);

/* Diagnostics and Repair
*/

/** Get status of current document. */
TIDY_EXPORT int TIDY_CALL         tidyStatus( TidyDoc tdoc );

/** Detected HTML version: 0, 2, 3 or 4 */
TIDY_EXPORT int TIDY_CALL         tidyDetectedHtmlVersion( TidyDoc tdoc );

/** Input is XHTML? */
TIDY_EXPORT Bool TIDY_CALL        tidyDetectedXhtml( TidyDoc tdoc );

/** Input is generic XML (not HTML or XHTML)? */
TIDY_EXPORT Bool TIDY_CALL        tidyDetectedGenericXml( TidyDoc tdoc );

/** Number of Tidy errors encountered.  If > 0, output is suppressed
**  unless TidyForceOutput is set.
*/
TIDY_EXPORT uint TIDY_CALL        tidyErrorCount( TidyDoc tdoc );

/** Number of Tidy warnings encountered. */
TIDY_EXPORT uint TIDY_CALL        tidyWarningCount( TidyDoc tdoc );

/** Number of Tidy accessibility warnings encountered. */
TIDY_EXPORT uint TIDY_CALL        tidyAccessWarningCount( TidyDoc tdoc );

/** Number of Tidy configuration errors encountered. */
TIDY_EXPORT uint TIDY_CALL        tidyConfigErrorCount( TidyDoc tdoc );

/* Get/Set configuration options
*/
/** Load an ASCII Tidy configuration file */
TIDY_EXPORT int TIDY_CALL         tidyLoadConfig( TidyDoc tdoc, ctmbstr configFile );

/** Load a Tidy configuration file with the specified character encoding */
TIDY_EXPORT int TIDY_CALL         tidyLoadConfigEnc( TidyDoc tdoc, ctmbstr configFile,
                                           ctmbstr charenc );

TIDY_EXPORT Bool TIDY_CALL        tidyFileExists( ctmbstr filename );


/** Set the input/output character encoding for parsing markup.
**  Values include: ascii, latin1, raw, utf8, iso2022, mac,
**  win1252, utf16le, utf16be, utf16, big5 and shiftjis.  Case in-sensitive.
*/
TIDY_EXPORT int TIDY_CALL         tidySetCharEncoding( TidyDoc tdoc, ctmbstr encnam );

/** Set the input encoding for parsing markup.
** As for tidySetCharEncoding but only affects the input encoding
**/
TIDY_EXPORT int TIDY_CALL         tidySetInCharEncoding( TidyDoc tdoc, ctmbstr encnam );

/** Set the output encoding.
**/
TIDY_EXPORT int TIDY_CALL         tidySetOutCharEncoding( TidyDoc tdoc, ctmbstr encnam );

/** @} end Basic group */


/** @defgroup Configuration Configuration Options
**
** Functions for getting and setting Tidy configuration options.
** @{
*/

/** Applications using TidyLib may want to augment command-line and
**  configuration file options.  Setting this callback allows an application 
**  developer to examine command-line and configuration file options after
**  TidyLib has examined them and failed to recognize them.
**/

typedef Bool (TIDY_CALL *TidyOptCallback)( ctmbstr option, ctmbstr value );

TIDY_EXPORT Bool TIDY_CALL          tidySetOptionCallback( TidyDoc tdoc, TidyOptCallback pOptCallback );

/** Get option ID by name */
TIDY_EXPORT TidyOptionId TIDY_CALL  tidyOptGetIdForName( ctmbstr optnam );

/** Get iterator for list of option */
/** 
Example:
<pre>
TidyIterator itOpt = tidyGetOptionList( tdoc );
while ( itOpt )
{
  TidyOption opt = tidyGetNextOption( tdoc, &itOpt );
  .. get/set option values ..
}
</pre>
*/

TIDY_EXPORT TidyIterator TIDY_CALL  tidyGetOptionList( TidyDoc tdoc );
/** Get next Option */
TIDY_EXPORT TidyOption TIDY_CALL    tidyGetNextOption( TidyDoc tdoc, TidyIterator* pos );

/** Lookup option by ID */
TIDY_EXPORT TidyOption TIDY_CALL    tidyGetOption( TidyDoc tdoc, TidyOptionId optId );
/** Lookup option by name */
TIDY_EXPORT TidyOption TIDY_CALL    tidyGetOptionByName( TidyDoc tdoc, ctmbstr optnam );

/** Get ID of given Option */
TIDY_EXPORT TidyOptionId TIDY_CALL  tidyOptGetId( TidyOption opt );

/** Get name of given Option */
TIDY_EXPORT ctmbstr TIDY_CALL       tidyOptGetName( TidyOption opt );

/** Get datatype of given Option */
TIDY_EXPORT TidyOptionType TIDY_CALL tidyOptGetType( TidyOption opt );

/** Is Option read-only? */
TIDY_EXPORT Bool TIDY_CALL          tidyOptIsReadOnly( TidyOption opt );

/** Get category of given Option */
TIDY_EXPORT TidyConfigCategory TIDY_CALL tidyOptGetCategory( TidyOption opt );

/** Get default value of given Option as a string */
TIDY_EXPORT ctmbstr TIDY_CALL       tidyOptGetDefault( TidyOption opt );

/** Get default value of given Option as an unsigned integer */
TIDY_EXPORT ulong TIDY_CALL         tidyOptGetDefaultInt( TidyOption opt );

/** Get default value of given Option as a Boolean value */
TIDY_EXPORT Bool TIDY_CALL          tidyOptGetDefaultBool( TidyOption opt );

/** Iterate over Option "pick list" */
TIDY_EXPORT TidyIterator TIDY_CALL  tidyOptGetPickList( TidyOption opt );
/** Get next string value of Option "pick list" */
TIDY_EXPORT ctmbstr TIDY_CALL       tidyOptGetNextPick( TidyOption opt, TidyIterator* pos );

/** Get current Option value as a string */
TIDY_EXPORT ctmbstr TIDY_CALL       tidyOptGetValue( TidyDoc tdoc, TidyOptionId optId );
/** Set Option value as a string */
TIDY_EXPORT Bool TIDY_CALL          tidyOptSetValue( TidyDoc tdoc, TidyOptionId optId, ctmbstr val );
/** Set named Option value as a string.  Good if not sure of type. */
TIDY_EXPORT Bool TIDY_CALL          tidyOptParseValue( TidyDoc tdoc, ctmbstr optnam, ctmbstr val );

/** Get current Option value as an integer */
TIDY_EXPORT ulong TIDY_CALL         tidyOptGetInt( TidyDoc tdoc, TidyOptionId optId );
/** Set Option value as an integer */
TIDY_EXPORT Bool TIDY_CALL          tidyOptSetInt( TidyDoc tdoc, TidyOptionId optId, ulong val );

/** Get current Option value as a Boolean flag */
TIDY_EXPORT Bool TIDY_CALL          tidyOptGetBool( TidyDoc tdoc, TidyOptionId optId );
/** Set Option value as a Boolean flag */
TIDY_EXPORT Bool TIDY_CALL          tidyOptSetBool( TidyDoc tdoc, TidyOptionId optId, Bool val );

/** Reset option to default value by ID */
TIDY_EXPORT Bool TIDY_CALL          tidyOptResetToDefault( TidyDoc tdoc, TidyOptionId opt );
/** Reset all options to their default values */
TIDY_EXPORT Bool TIDY_CALL          tidyOptResetAllToDefault( TidyDoc tdoc );

/** Take a snapshot of current config settings */
TIDY_EXPORT Bool TIDY_CALL          tidyOptSnapshot( TidyDoc tdoc );
/** Reset config settings to snapshot (after document processing) */
TIDY_EXPORT Bool TIDY_CALL          tidyOptResetToSnapshot( TidyDoc tdoc );

/** Any settings different than default? */
TIDY_EXPORT Bool TIDY_CALL          tidyOptDiffThanDefault( TidyDoc tdoc );
/** Any settings different than snapshot? */
TIDY_EXPORT Bool TIDY_CALL          tidyOptDiffThanSnapshot( TidyDoc tdoc );

/** Copy current configuration settings from one document to another */
TIDY_EXPORT Bool TIDY_CALL          tidyOptCopyConfig( TidyDoc tdocTo, TidyDoc tdocFrom );

/** Get character encoding name.  Used with TidyCharEncoding,
**  TidyOutCharEncoding, TidyInCharEncoding */
TIDY_EXPORT ctmbstr TIDY_CALL       tidyOptGetEncName( TidyDoc tdoc, TidyOptionId optId );

/** Get current pick list value for option by ID.  Useful for enum types. */
TIDY_EXPORT ctmbstr TIDY_CALL       tidyOptGetCurrPick( TidyDoc tdoc, TidyOptionId optId);

/** Iterate over user declared tags */
TIDY_EXPORT TidyIterator TIDY_CALL  tidyOptGetDeclTagList( TidyDoc tdoc );
/** Get next declared tag of specified type: TidyInlineTags, TidyBlockTags,
**  TidyEmptyTags, TidyPreTags */
TIDY_EXPORT ctmbstr TIDY_CALL       tidyOptGetNextDeclTag( TidyDoc tdoc, 
                                                          TidyOptionId optId,
                                                          TidyIterator* iter );
/** Get option description */
TIDY_EXPORT ctmbstr TIDY_CALL       tidyOptGetDoc( TidyDoc tdoc, TidyOption opt );

/** Iterate over a list of related options */
TIDY_EXPORT TidyIterator TIDY_CALL  tidyOptGetDocLinksList( TidyDoc tdoc,
                                                  TidyOption opt );
/** Get next related option */
TIDY_EXPORT TidyOption TIDY_CALL    tidyOptGetNextDocLinks( TidyDoc tdoc,
                                                  TidyIterator* pos );

/** @} end Configuration group */

/** @defgroup IO  I/O and Messages
**
** By default, Tidy will define, create and use 
** instances of input and output handlers for 
** standard C buffered I/O (i.e. FILE* stdin,
** FILE* stdout and FILE* stderr for content
** input, content output and diagnostic output,
** respectively.  A FILE* cfgFile input handler
** will be used for config files.  Command line
** options will just be set directly.
**
** @{
*/

/*****************
   Input Source
*****************/
/** Input Callback: get next byte of input */
typedef int  (TIDY_CALL *TidyGetByteFunc)( ulong sourceData );

/** Input Callback: unget a byte of input */
typedef void (TIDY_CALL *TidyUngetByteFunc)( ulong sourceData, byte bt );

/** Input Callback: is end of input? */
typedef Bool (TIDY_CALL *TidyEOFFunc)( ulong sourceData );

/** End of input "character" */
#define EndOfStream (~0u)

/** TidyInputSource - Delivers raw bytes of input
*/
TIDY_STRUCT
typedef struct _TidyInputSource
{
  /* Instance data */
  ulong               sourceData;  /**< Input context.  Passed to callbacks */

  /* Methods */
  TidyGetByteFunc     getByte;     /**< Pointer to "get byte" callback */
  TidyUngetByteFunc   ungetByte;   /**< Pointer to "unget" callback */
  TidyEOFFunc         eof;         /**< Pointer to "eof" callback */
} TidyInputSource;

/** Facilitates user defined source by providing
**  an entry point to marshal pointers-to-functions.
**  Needed by .NET and possibly other language bindings.
*/
TIDY_EXPORT Bool TIDY_CALL tidyInitSource( TidyInputSource*  source,
                                          void*             srcData,
                                          TidyGetByteFunc   gbFunc,
                                          TidyUngetByteFunc ugbFunc,
                                          TidyEOFFunc       endFunc );

/** Helper: get next byte from input source */
TIDY_EXPORT uint TIDY_CALL tidyGetByte( TidyInputSource* source );

/** Helper: unget byte back to input source */
TIDY_EXPORT void TIDY_CALL tidyUngetByte( TidyInputSource* source, uint byteValue );

/** Helper: check if input source at end */
TIDY_EXPORT Bool TIDY_CALL tidyIsEOF( TidyInputSource* source );


/****************
   Output Sink
****************/
/** Output callback: send a byte to output */
typedef void (TIDY_CALL *TidyPutByteFunc)( ulong sinkData, byte bt );


/** TidyOutputSink - accepts raw bytes of output
*/
TIDY_STRUCT
typedef struct _TidyOutputSink
{
  /* Instance data */
  ulong               sinkData;  /**< Output context.  Passed to callbacks */

  /* Methods */
  TidyPutByteFunc     putByte;   /**< Pointer to "put byte" callback */
} TidyOutputSink;

/** Facilitates user defined sinks by providing
**  an entry point to marshal pointers-to-functions.
**  Needed by .NET and possibly other language bindings.
*/
TIDY_EXPORT Bool TIDY_CALL tidyInitSink( TidyOutputSink* sink, 
                                        void*           snkData,
                                        TidyPutByteFunc pbFunc );

/** Helper: send a byte to output */
TIDY_EXPORT void TIDY_CALL tidyPutByte( TidyOutputSink* sink, uint byteValue );


/** Callback to filter messages by diagnostic level:
**  info, warning, etc.  Just set diagnostic output 
**  handler to redirect all diagnostics output.  Return true
**  to proceed with output, false to cancel.
*/
typedef Bool (TIDY_CALL *TidyReportFilter)( TidyDoc tdoc, TidyReportLevel lvl,
                                           uint line, uint col, ctmbstr mssg );

/** Give Tidy a filter callback to use */
TIDY_EXPORT Bool TIDY_CALL    tidySetReportFilter( TidyDoc tdoc,
                                                  TidyReportFilter filtCallback );

/** Set error sink to named file */
TIDY_EXPORT FILE* TIDY_CALL   tidySetErrorFile( TidyDoc tdoc, ctmbstr errfilnam );
/** Set error sink to given buffer */
TIDY_EXPORT int TIDY_CALL     tidySetErrorBuffer( TidyDoc tdoc, TidyBuffer* errbuf );
/** Set error sink to given generic sink */
TIDY_EXPORT int TIDY_CALL     tidySetErrorSink( TidyDoc tdoc, TidyOutputSink* sink );

/** @} end IO group */


/** @defgroup Memory  Memory Allocation
**
** By default, Tidy will use its own wrappers
** around standard C malloc/free calls. 
** These wrappers will abort upon any failures.
** If any are set, all must be set.
** Pass NULL to clear previous setting.
**
** May be used to set environment-specific allocators
** such as used by web server plugins, etc.
**
** @{
*/

/** Callback for "malloc" replacement */
typedef void* (TIDY_CALL *TidyMalloc)( size_t len );
/** Callback for "realloc" replacement */
typedef void* (TIDY_CALL *TidyRealloc)( void* buf, size_t len );
/** Callback for "free" replacement */
typedef void  (TIDY_CALL *TidyFree)( void* buf );
/** Callback for "out of memory" panic state */
typedef void  (TIDY_CALL *TidyPanic)( ctmbstr mssg );

/** Give Tidy a malloc() replacement */
TIDY_EXPORT Bool TIDY_CALL        tidySetMallocCall( TidyMalloc fmalloc );
/** Give Tidy a realloc() replacement */
TIDY_EXPORT Bool TIDY_CALL        tidySetReallocCall( TidyRealloc frealloc );
/** Give Tidy a free() replacement */
TIDY_EXPORT Bool TIDY_CALL        tidySetFreeCall( TidyFree ffree );
/** Give Tidy an "out of memory" handler */
TIDY_EXPORT Bool TIDY_CALL        tidySetPanicCall( TidyPanic fpanic );

/** @} end Memory group */

/* TODO: Catalog all messages for easy translation
TIDY_EXPORT ctmbstr     tidyLookupMessage( int errorNo );
*/



/** @defgroup Parse Document Parse
**
** Parse markup from a given input source.  String and filename 
** functions added for convenience.  HTML/XHTML version determined
** from input.
** @{
*/

/** Parse markup in named file */
TIDY_EXPORT int TIDY_CALL         tidyParseFile( TidyDoc tdoc, ctmbstr filename );

/** Parse markup from the standard input */
TIDY_EXPORT int TIDY_CALL         tidyParseStdin( TidyDoc tdoc );

/** Parse markup in given string */
TIDY_EXPORT int TIDY_CALL         tidyParseString( TidyDoc tdoc, ctmbstr content );

/** Parse markup in given buffer */
TIDY_EXPORT int TIDY_CALL         tidyParseBuffer( TidyDoc tdoc, TidyBuffer* buf );

/** Parse markup in given generic input source */
TIDY_EXPORT int TIDY_CALL         tidyParseSource( TidyDoc tdoc, TidyInputSource* source);

/** @} End Parse group */


/** @defgroup Clean Diagnostics and Repair
**
** @{
*/
/** Execute configured cleanup and repair operations on parsed markup */
TIDY_EXPORT int TIDY_CALL         tidyCleanAndRepair( TidyDoc tdoc );

/** Run configured diagnostics on parsed and repaired markup. 
**  Must call tidyCleanAndRepair() first.
*/
TIDY_EXPORT int TIDY_CALL         tidyRunDiagnostics( TidyDoc tdoc );

/** @} end Clean group */


/** @defgroup Save Document Save Functions
**
** Save currently parsed document to the given output sink.  File name
** and string/buffer functions provided for convenience.
** @{
*/

/** Save to named file */
TIDY_EXPORT int TIDY_CALL         tidySaveFile( TidyDoc tdoc, ctmbstr filename );

/** Save to standard output (FILE*) */
TIDY_EXPORT int TIDY_CALL         tidySaveStdout( TidyDoc tdoc );

/** Save to given TidyBuffer object */
TIDY_EXPORT int TIDY_CALL         tidySaveBuffer( TidyDoc tdoc, TidyBuffer* buf );

/** Save document to application buffer.  If buffer is not big enough,
**  ENOMEM will be returned and the necessary buffer size will be placed
**  in *buflen.
*/
TIDY_EXPORT int TIDY_CALL         tidySaveString( TidyDoc tdoc,
                                                 tmbstr buffer, uint* buflen );

/** Save to given generic output sink */
TIDY_EXPORT int TIDY_CALL         tidySaveSink( TidyDoc tdoc, TidyOutputSink* sink );

/** @} end Save group */


/** @addtogroup Basic
** @{
*/
/** Save current settings to named file.
    Only non-default values are written. */
TIDY_EXPORT int TIDY_CALL         tidyOptSaveFile( TidyDoc tdoc, ctmbstr cfgfil );

/** Save current settings to given output sink.
    Only non-default values are written. */
TIDY_EXPORT int TIDY_CALL         tidyOptSaveSink( TidyDoc tdoc, TidyOutputSink* sink );


/* Error reporting functions 
*/

/** Write more complete information about errors to current error sink. */
TIDY_EXPORT void TIDY_CALL        tidyErrorSummary( TidyDoc tdoc );

/** Write more general information about markup to current error sink. */
TIDY_EXPORT void TIDY_CALL        tidyGeneralInfo( TidyDoc tdoc );

/** @} end Basic group (again) */


/** @defgroup Tree Document Tree
**
** A parsed and, optionally, repaired document is
** represented by Tidy as a Tree, much like a W3C DOM.
** This tree may be traversed using these functions.
** The following snippet gives a basic idea how these
** functions can be used.
**
<pre>
void dumpNode( TidyNode tnod, int indent )
{
  TidyNode child;

  for ( child = tidyGetChild(tnod); child; child = tidyGetNext(child) )
  {
    ctmbstr name;
    switch ( tidyNodeGetType(child) )
    {
    case TidyNode_Root:       name = "Root";                    break;
    case TidyNode_DocType:    name = "DOCTYPE";                 break;
    case TidyNode_Comment:    name = "Comment";                 break;
    case TidyNode_ProcIns:    name = "Processing Instruction";  break;
    case TidyNode_Text:       name = "Text";                    break;
    case TidyNode_CDATA:      name = "CDATA";                   break;
    case TidyNode_Section:    name = "XML Section";             break;
    case TidyNode_Asp:        name = "ASP";                     break;
    case TidyNode_Jste:       name = "JSTE";                    break;
    case TidyNode_Php:        name = "PHP";                     break;
    case TidyNode_XmlDecl:    name = "XML Declaration";         break;

    case TidyNode_Start:
    case TidyNode_End:
    case TidyNode_StartEnd:
    default:
      name = tidyNodeGetName( child );
      break;
    }
    assert( name != NULL );
    printf( "\%*.*sNode: \%s\\n", indent, indent, " ", name );
    dumpNode( child, indent + 4 );
  }
}

void dumpDoc( TidyDoc tdoc )
{
  dumpNode( tidyGetRoot(tdoc), 0 );
}

void dumpBody( TidyDoc tdoc )
{
  dumpNode( tidyGetBody(tdoc), 0 );
}
</pre>

@{

*/

TIDY_EXPORT TidyNode TIDY_CALL    tidyGetRoot( TidyDoc tdoc );
TIDY_EXPORT TidyNode TIDY_CALL    tidyGetHtml( TidyDoc tdoc );
TIDY_EXPORT TidyNode TIDY_CALL    tidyGetHead( TidyDoc tdoc );
TIDY_EXPORT TidyNode TIDY_CALL    tidyGetBody( TidyDoc tdoc );

/* parent / child */
TIDY_EXPORT TidyNode TIDY_CAL