%%	options

copyright owner	=	Dirk Krause
copyright year	=	2013-2014
license		=	bsd



%%	header


#ifdef __cplusplus
extern "C" {
#endif

/**	Add one file name to the list of files to copy.
	@param	job	Job structure.
	@param	fn	File name.
	@return	1 on success, 0 on error.
*/
int
hbtool_add_file(hb_job_t *job, dkChar const *fn);

/**	Add one file (probably with CGI arguments) to list of files to copy.
	The URL is only added if it references a local file name
	in the current working directory without any protocol
	specification, (src="filename.png"). For all other URLs we skip
	adding and return 1.
	@param	job	Job structure.
	@param	url	URL as specified.
	@return	1 on success, 0 on error.
*/
int
hbtool_add_url(hb_job_t *job, dkChar const *url);

/**	Check file name. The file must be specified without a path.
	The file name must be encodable as URL
	so it must be in range 0x00000000 to 0x000000FF.
	For Windows systems the file name must be encodable as ANSI,
	so the following codes are excluded from the range above:
	0x80 to 0x8C, 0x8E, 0x91 to 0x9C, 0x9E to 0x9F.
	@param	job	Job structure.
	@param	fn	File name.
	@return	1 on success, 0 on error.
*/
int
hbtool_check_filename(hb_job_t *job, dkChar const *fn);

/**	Check file name encoding.
	The file name must be encodable as URL
	so it must be in range 0x00000000 to 0x000000FF.
	For Windows systems the file name must be encodable as ANSI,
	so the following codes are excluded from the range above:
	0x80 to 0x8C, 0x8E, 0x91 to 0x9C, 0x9E to 0x9F.
	@param	job	Job structure.
	@param	fn	File name.
	@return	1 on success, 0 on error.
*/
int
hbtool_check_filename_encoding(hb_job_t *job, dkChar const *fn);
	
/**	Retrieve start character from text.
	@param	text	Text to obtain character from.
	@param	enc	Text encoding.
	@return	Start character on success, 0UL on error.
*/
dk3_c32_t
hbtool_get_start_char(dkChar const *text, int enc);

/**	Enumerate section and subsections.
	@param	job	Job structure.
*/
void
hbtool_enumerate(hb_job_t *job);

/**	Write hiearchical header number.
	@param	job	Job structure.
	@param	nptr	Node to write header for.
	@return	1 if number was written, 0 otherwise.
*/
int
hbtool_write_header_number(hb_job_t *job, hb_node_t *nptr);

/**	Write all titles, separated by arrows.
	For the primary node we write the full header, for parent
	nodes the short header.
	@param	job	Job structure.
	@param	nptr	Current node to write title for.
	@param	isprim	Flag: Is primary node.
*/
int
hbtool_write_all_titles(hb_job_t *job, hb_node_t *nptr, int isprim);

/**	Correct backslashes to slash on Windows systems.
	@param	str	String to correct.
*/
void
hbtool_correct_backslash_to_slash(dkChar *str);

/**	Write text (file name) UTF-8 encoded to jobs output file.
	@param	job	Job structure.
	@param	src	String to write.
	@return	1 on success, 0 on error.
*/
int
hbtool_write_text_utf(hb_job_t *job, dkChar const *src);

#ifdef __cplusplus
}
#endif

%%	module


#include "dk3all.h"
#include "dk3se.h"
#include "htmlbook.h"



$!trace-include



int
hbtool_add_file(hb_job_t *job, dkChar const *fn)
{
  dkChar	 bu[DK3_MAX_PATH];	/* File name buffer */
  dkChar	*p1;			/* Start of file name */
  int		 back = 0;
  $? "+ hbtool_add_file \"%s\"", TR_STR(fn)
  if(fn) {
    if(dk3str_len(fn) < DK3_SIZEOF(bu,dkChar)) {
      p1 = dk3str_start(fn, NULL);
      if(p1) {
        dk3str_cpy(bu, p1);
	dk3str_chomp(bu, NULL);
	if(dk3sto_it_find_like(job->i_files, bu, 0)) {
	  back = 1;
	} else {
	  p1 = dk3str_dup_app(bu, job->app);
	  if(p1) {
	    if(dk3sto_add(job->s_files, p1)) {
	      back = 1;
	    } else {
	      dk3_delete(p1);
	    }
	  }
	}
      }
    } else {
      dk3app_log_i3(job->app, DK3_LL_ERROR, 65, 66, fn);
    }
  } $? "- hbtool_add_file %d", back
  return back;
}



int
hbtool_check_filename_encoding(hb_job_t *job, dkChar const *fn)
{
  int		 back;
  int		 se;		/* Standard encoding to check */
  $? "+ hbtool_check_filename_encoding \"%s\"", TR_STR(fn)
#if DK3_ON_WINDOWS
  se = (DK3SE_ANSI | DK3SE_URL);
#else
  if((job->options) & HB_JOB_OPT_CHM) {
    se = (DK3SE_ANSI | DK3SE_URL);
  } else {
    se = DK3SE_URL;
  }
#endif
  back = dk3se_check(fn,dk3app_get_encoding(job->app),se,NULL,NULL,job->app);
  $? "- hbtool_check_filename_encoding %d", back
  return back;
}



int
hbtool_check_filename(hb_job_t *job, dkChar const *fn)
{
  int		 back;
  $? "+ hbtool_check_filename \"%s\"", TR_STR(fn)
  back = hbtool_check_filename_encoding(job, fn);
  if(dk3str_chr(fn, DK3_CHAR_SEP)) {
    dk3app_log_1(job->app, DK3_LL_ERROR, job->msg, 12);
    back = 0;
  } $? "- hbtool_check_filename %d", back
  return back;
}




dk3_c32_t
hbtool_get_start_char(dkChar const *text, int enc)
{
  dk3_c32_t		back = 0UL;
  dk3_c32_t		c32 = 0UL;	/* Start character */
  size_t		sl;		/* String length */
  size_t		used;		/* Number of bytes used */
  char			c;		/* Result character */
  $? "+ hbtool_get_start_char"
  if(text) {
    sl = dk3str_len(text);
#if DK3_CHAR_SIZE > 1
#if DK3_CHAR_SIZE > 2
    back = *text;
#else
    used = 0;
    if(dk3enc_utf162uc(&c32, text, sl, &used)) {
      back = c32;
    }
#endif
#else
    if(enc == DK3_ENCODING_UTF8) {
      used = 0;
      if(dk3enc_utf82uc(&c32, (unsigned char const *)text, sl, &used)) {
        back = c32;
      }
    } else {
      c = *text;
      back = (dk3_c32_t)c;
      back &= ((dk3_c32_t)0x000000FFUL);
    }
#endif
  } $? "- hbtool_get_start_char 0x%lx %lu", (unsigned long)back, (unsigned long)back
  return back;
}



void
hbtool_enumerate(hb_job_t *job)
{
  hb_node_t	*nptr;	/* Next node */
  hb_node_t	*cptr;	/* Current node */
  dk3sto_it_reset(job->i_nodes);
  while(NULL != (nptr = (hb_node_t *)dk3sto_it_next(job->i_nodes))) {
    nptr->headno = 0UL; nptr->nextsubheadno = 0UL;
    nptr->tocstate = HB_TOC_STATE_INIT;
  }
  cptr = job->rootnode;
  while(cptr) {
    switch(cptr->tocstate) {
      case HB_TOC_STATE_INIT: {
        dk3sto_it_reset(cptr->i_subnodes);
	nptr = (hb_node_t *)dk3sto_it_next(cptr->i_subnodes);
	if(nptr) {
	  cptr->tocstate = HB_TOC_STATE_IN_PROGRESS;
	  nptr->headno = cptr->nextsubheadno;
	  cptr->nextsubheadno += 1UL;
	  cptr = nptr;
	} else {
	  cptr->tocstate = HB_TOC_STATE_FINISHED;
	  cptr = cptr->parent;
	}
      } break;
      case HB_TOC_STATE_IN_PROGRESS: {
        nptr = (hb_node_t *)dk3sto_it_next(cptr->i_subnodes);
	if(nptr) {
	  nptr->headno = cptr->nextsubheadno;
	  cptr->nextsubheadno += 1UL;
	  cptr = nptr;
	} else {
	  cptr->tocstate = HB_TOC_STATE_FINISHED;
	  cptr = cptr->parent;
	}
      } break;
      case HB_TOC_STATE_FINISHED: {
        cptr = cptr->parent;
      } break;
    }
  }
  dk3sto_it_reset(job->i_nodes);
  while(NULL != (nptr = (hb_node_t *)dk3sto_it_next(job->i_nodes))) {
    nptr->tocstate = HB_TOC_STATE_INIT;
  }
}



int
hbtool_write_header_number(hb_job_t *job, hb_node_t *nptr)
{
  dkChar		bu[32];
  int			back = 0;
  $? "+ hbtool_write_header_number"
  if((job) && (nptr)) {
    if(nptr->parent) { 				$? ". have parent"
      if(nptr->depth <= job->headlevels) {	$? ". within limit"
        back = 1;
	if(job->impressumnode) {
	  if((job->impressumnode)->objno == nptr->objno) {
	    back = 0;				$? ". this is impressum"
	  }
	}
	if(back) {				$? ". ok to write number"
          hbtool_write_header_number(job, nptr->parent);
	  if(1 < nptr->depth) {			$? ". write dot"
	    hbhtml_output_for_text(job, dkT("."));
	  }
#if VERSION_BEFORE_20140716
	  dk3sf_sprintf3(bu, dkT("%lu"), (1UL + nptr->headno));
	  hbhtml_output_for_text(job, bu);	$? ". number written"
#else
	  if (dk3ma_um_to_string(bu, DK3_SIZEOF(bu,dkChar), (dk3_um_t)(1UL + nptr->headno))) {
	    hbhtml_output_for_text(job, bu);
	  }
#endif
	} else {				$? ". do not write number"
	}
      } else {					$? ". not in limit"
      }
    } else {					$? ". no parent"
    }
  } $? "- hbtool_write_header_number %d", back
  return back;
}



int
hbtool_add_url(hb_job_t *job, dkChar const *url)
{
  dkChar	 bu[DK3_MAX_PATH];	/* Copy of URL */
  dkChar	*p1;			/* Start of text in url */
  int		 back = 1;
  if(!hbhtml_check_link_for_external(url)) {
    if(dk3str_len(url) < DK3_SIZEOF(bu,dkChar)) {
      dk3str_cpy(bu, url);
      p1 = dk3str_chr(bu, dkT('?'));
      if(p1) {
        *p1 = dkT('\0');
      } else {
        p1 = dk3str_chr(bu, dkT('#'));
	if(p1) {
	  *p1 = dkT('\0');
	}
      }
      if(NULL == dk3str_chr(bu, dkT('/'))) {
        if(0 < dk3str_len(bu)) {
          back = hbtool_add_file(job, bu);
	}
      }
    } else {
      /* ERROR: File name too long! */
      dk3app_log_i3(job->app, DK3_LL_ERROR, 65, 66, url);
      back = 0;
    }
  }
  return back;
}



void
hbtool_correct_backslash_to_slash(dkChar *str)
{
#if DK3_ON_WINDOWS
  char *ptr;
  ptr = str;
  while(*ptr) {
    if(dkT('\\') == *ptr) { *ptr = dkT('/'); }
    ptr++;
  }
#endif
}



int
hbtool_write_all_titles(hb_job_t *job, hb_node_t *nptr, int isprim)
{
  int			 back = 0;
  /* hbhtml_output_for_text(job, dkT(" ")); */
  if ((job) && (nptr)) {
    if (nptr->parent) {
      back = 1;
      if (job->impressumnode) {
        if ((job->impressumnode)->objno == nptr->objno) {
	  back = 0;
	}
      }
      if (back) {
        if (hbtool_write_all_titles(job, nptr->parent, 0)) {
	  hbhtml_output_for_text(job, dkT(" &#8594; "));
	}
	if (isprim) {
	  if (nptr->title) {
	    hbhtml_output_for_text(job, nptr->title);
	  }
	} else {
	  if (nptr->shorttitle) {
	    hbhtml_output_for_text(job, nptr->shorttitle);
	  } else {
	    if (nptr->title) {
	      hbhtml_output_for_text(job, nptr->title);
	    }
	  }
	}
      }
    }
  }
  return back;
}



int
hbtool_write_text_utf(hb_job_t *job, dkChar const *src)
{
  char		 bu[(1024 < DK3_MAX_PATH) ? DK3_MAX_PATH : 1024];
  int		 back = 0;
  int		 ie;
  if ((job) && (src)) {
    ie = dk3app_get_encoding(job->app);
    if (dk3str_to_c8u_app(bu, sizeof(bu), src, ie, job->app)) {
      if (EOF != fputs(bu, job->of)) {
        back = 1;
      }
    }
  }
  return back;
}