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%%	options

copyright owner	=	Dirk Krause
copyright year	=	2016-xxxx
license			=	bsd


%%	header

/**	@file	dk4paper.h	Read paper sizes.
*/

#ifndef	DK4CONF_H_INCLUDED
#include "dk4conf.h"
#endif

#ifndef	DK4TYPES_H_INCLUDED
#include "dk4types.h"
#endif

#ifndef	DK4ERROR_H_INCLUDED
#include "dk4error.h"
#endif

#ifndef	DK4STO_H_INCLUDED
#include "dk4sto.h"
#endif


/**	One paper size.
*/
typedef struct {
	dkChar	*name;	/**< Paper format name. */
	double	 w;		/**< Paper width in PS points. */
	double	 h;		/**< Paper height. */
	double	 i;		/**< Left or inner border. */
	double	 o;		/**< Right or outer border. */
	double	 t;		/**< Top border. */
	double	 b;		/**< Bottom border. */
} dk4_paper_size_t;


/**	Collection of paper sizes read from files.
*/
typedef struct {
	dk4_sto_t		*s_ps;	/**< Storage for paper sizes. */
	dk4_sto_it_t	*i_ps;	/**< Iterator through storage. */
} dk4_paper_size_collection_t;

#ifdef	__cplusplus
extern "C" {
#endif


/**	Open a new paper size collection with minimum entries only.
	@param	erp	Error report, may be NULL.
*/

dk4_paper_size_collection_t *
dk4papersize_coll_open(dk4_er_t *erp);


/**	Open a new paper size collection, search for configuration files
	and apply them.
	Note: Programs using the dk4_app_t type should use the
	dk4app_get_paper_sizes() from the dk4papea module instead.
	@param	progname	Program name.
	@param	grpname		Program group name.
	@param	erp			Error report, may be NULL.
	@return	Valid pointer on success, NULL on error.
*/

dk4_paper_size_collection_t *
dk4papersize_coll_for_application(
	const dkChar	*progname,
	const dkChar	*grpname,
	dk4_er_t		*erp
);


/**	Close paper size collection, release memory.
	@param	ptr	Paper size collection to close.
*/

void
dk4papersize_coll_close(dk4_paper_size_collection_t *ptr);


/**	Find a specific paper size in the collection.
	Note: Do not mix search and traversal mechanism, use exactly
	one method from the following three:
	- Find paper size entry by name using dk4papersize_coll_find(),
	- Get number of paper sizes using dk4papersize_coll_size() and use
	  dk4papersize_coll_get() to get an entry for a given index,
	- Reset the collection using dk4papersize_coll_reset() and retrieve
	  the next entry using dk4papersize_coll_next(), repeat
	  dk4papersize_coll_next() until it returns NULL.
	All three methods use and modify the same internal container iterator,
	so mixing the methods is not a good idea.
	@param	ptr		Paper size collection to search for a paper size.
	@param	name	Name of paper size to find.
	@param	erp		Error report, may be NULL.
	@return	Pointer to paper size on success, NULL on error or not found.
*/

const dk4_paper_size_t *
dk4papersize_coll_find(
	dk4_paper_size_collection_t	*ptr,
	const dkChar				*name,
	dk4_er_t					*erp
);


/**	Get number of paper sizes stored in the collection.
	Note: Do not mix search and traversal mechanism, use exactly
	one method from the following three:
	- Find paper size entry by name using dk4papersize_coll_find(),
	- Get number of paper sizes using dk4papersize_coll_size() and use
	  dk4papersize_coll_get() to get an entry for a given index,
	- Reset the collection using dk4papersize_coll_reset() and retrieve
	  the next entry using dk4papersize_coll_next(), repeat
	  dk4papersize_coll_next() until it returns NULL.
	All three methods use and modify the same internal container iterator,
	so mixing the methods is not a good idea.
	@param	ptr	Paper size collection to query.
	@return	Positive number of paper sizes on success, 0 on error.
*/

size_t
dk4papersize_coll_size(dk4_paper_size_collection_t *ptr);


/**	Get paper size entry from collection by number.
	Note: Do not mix search and traversal mechanism, use exactly
	one method from the following three:
	- Find paper size entry by name using dk4papersize_coll_find(),
	- Get number of paper sizes using dk4papersize_coll_size() and use
	  dk4papersize_coll_get() to get an entry for a given index,
	- Reset the collection using dk4papersize_coll_reset() and retrieve
	  the next entry using dk4papersize_coll_next(), repeat
	  dk4papersize_coll_next() until it returns NULL.
	All three methods use and modify the same internal container iterator,
	so mixing the methods is not a good idea.
	@param	ptr	Paper size collection to query.
	@param	n	Index of paper size entry, 0 for the first.
	@return	Valid pointer on success, NULL on error.
*/

const dk4_paper_size_t *
dk4papersize_coll_get(dk4_paper_size_collection_t *ptr, size_t n);


/**	Reset collection (start traversing at beginning).
	Note: Do not mix search and traversal mechanism, use exactly
	one method from the following three:
	- Find paper size entry by name using dk4papersize_coll_find(),
	- Get number of paper sizes using dk4papersize_coll_size() and use
	  dk4papersize_coll_get() to get an entry for a given index,
	- Reset the collection using dk4papersize_coll_reset() and retrieve
	  the next entry using dk4papersize_coll_next(), repeat
	  dk4papersize_coll_next() until it returns NULL.
	All three methods use and modify the same internal container iterator,
	so mixing the methods is not a good idea.
	@param	ptr	Paper size collection to reset.
*/

void
dk4papersize_coll_reset(dk4_paper_size_collection_t *ptr);


/**	Get next paper size from collection.
	Note: Do not mix search and traversal mechanism, use exactly
	one method from the following three:
	- Find paper size entry by name using dk4papersize_coll_find(),
	- Get number of paper sizes using dk4papersize_coll_size() and use
	  dk4papersize_coll_get() to get an entry for a given index,
	- Reset the collection using dk4papersize_coll_reset() and retrieve
	  the next entry using dk4papersize_coll_next(), repeat
	  dk4papersize_coll_next() until it returns NULL.
	All three methods use and modify the same internal container iterator,
	so mixing the methods is not a good idea.
	@param	ptr	Paper size collection to query.
	@return	Valid pointer on success, NULL on error or end of collection.
*/

const dk4_paper_size_t *
dk4papersize_coll_next(dk4_paper_size_collection_t *ptr);


/**	Create a new paper size structure, allocate memory.
	@param	name	Name of paper size.
	@param	erp		Error report, may be NULL.
	@return	Pointer to new paper size structure on success, NULL on error.
*/

dk4_paper_size_t *
dk4papersize_new(const dkChar *name, dk4_er_t *erp);


/**	Destroy a paper size structure, release memory.
	@param	pps	Paper size structure to destroy.
*/

void
dk4papersize_delete(dk4_paper_size_t *pps);


/**	Compare two paper sizes.
	@param	l	Left object pointer.
	@param	r	Right object or name pointer.
	@param	cr	Comparison criteria: 0=papersize/papersize, 1=papersize/name.
	@return	Comparison result.
*/

int
dk4papersize_cmp(const void *l, const void *r, int cr);


/**	Get paper width from paper size record.
	@param	psptr	Paper size record to query.
	@return	Positive result on success, negative value on error.
*/

double
dk4papersize_get_width(const dk4_paper_size_t *psptr);


/**	Get paper height from paper size record.
	@param	psptr	Paper size record to query.
	@return	Positive result on success, negative value on error.
*/

double
dk4papersize_get_height(const dk4_paper_size_t *psptr);


/**	Get left (inner) border from paper size record.
	@param	psptr	Paper size record to query.
	@return	Non-negative result on success, negative value on error.
*/

double
dk4papersize_get_left_border(const dk4_paper_size_t *psptr);


/**	Get right (outer) border from paper size record.
	@param	psptr	Paper size record to query.
	@return	Non-negative result on success, negative value on error.
*/

double
dk4papersize_get_right_border(const dk4_paper_size_t *psptr);


/**	Get top border from paper size record.
	@param	psptr	Paper size record to query.
	@return	Non-negative result on success, negative value on error.
*/

double
dk4papersize_get_top_border(const dk4_paper_size_t *psptr);


/**	Get bottom border from paper size record.
	@param	psptr	Paper size record to query.
	@return	Non-negative result on success, negative value on error.
*/

double
dk4papersize_get_bottom_border(const dk4_paper_size_t *psptr);


/**	Get name for paper size.
	@param	psptr	Paper size record to query.
	@return	Valid pointer on success, NULL on error or empty name.
*/

const dkChar *
dk4papersize_get_name(const dk4_paper_size_t *psptr);

#ifdef	__cplusplus
}
#endif


/* vim: set ai sw=4 ts=4 : */
%%	module

#include "dk4mem.h"
#include "dk4strd.h"
#include "dk4paper.h"
#include "dk4maiddbl.h"
#include "dk4fs.h"
#include "dk4mpl.h"
#include "dk4tspdk.h"
#include "dk4strm.h"
#include "dk4strmr.h"
#include "dk4enc.h"
#include "dk4loc.h"
#include "dk4user.h"
#include "dk4inst.h"



$!trace-include



/**	Object passed as pointer to the line handler.
*/
typedef struct {
	dk4_paper_size_collection_t	*coll;	/**< Collection to modify. */
} reader_obj_t;



/**	Configuration files to search for.
*/
static const dkChar * const	conf_file_names[] = {
	dkT("dk4paper.conf"),
	dkT("dk3paper.conf")
};



/**	Default paper size names always defined.
*/
static const dkChar	*default_paper_sizes[] = {
$!string-table	macro=dkT
A4
a4
Letter
letter
$!end
};



void
dk4papersize_delete(dk4_paper_size_t *pps)
{
	$? "+ dk4papersize_delete"
	if (NULL != pps) {				$? ". args ok"
		if (NULL != pps->name) {	$? ". name=\"%!ds\"", pps->name
			$? ". w=%g h=%g l=%g r=%g t=%g, b=%g", pps->w, pps->h, pps->i, pps->o, pps->t, pps->b
			dk4mem_free(pps->name);
			pps->name = NULL;
		}
		dk4mem_free(pps);
	}
#if TRACE_DEBUG
	else {							$? "! pps"
	}
#endif
	$? "- dk4papersize_delete"
}



dk4_paper_size_t *
dk4papersize_new(const dkChar *name, dk4_er_t *erp)
{
	dk4_paper_size_t	*back	= NULL;
	$? "+ dk4papersize_new \"%!ds\"", TR_STR(name)
	if (NULL != name) {
		back = dk4mem_new(dk4_paper_size_t,1,erp);
		if (NULL != back) {
			back->w = 0.0;
			back->h = 0.0;
			back->i = 0.0;
			back->o = 0.0;
			back->t = 0.0;
			back->b = 0.0;
			back->name = dk4str_dup(name, erp);
			if (NULL == back->name) {
				dk4mem_free(back);
				back = NULL;
			}
		}
	}
	else {
		dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
	}
	$? "- dk4papersize_new %d", TR_IPTR(back)
	return back;
}




void
dk4papersize_coll_close(dk4_paper_size_collection_t *ptr)
{
	dk4_paper_size_t	*pps;
	$? "+ dk4papersize_coll_close %d", TR_IPTR(ptr)
	if (NULL != ptr) {					$? ". ptr ok"
		if (NULL != ptr->s_ps) {		$? ". s_ps ok"
			if (NULL != ptr->i_ps) {	$? ". i_ps ok"
				dk4sto_it_reset(ptr->i_ps);
				do {
					pps = (dk4_paper_size_t *)dk4sto_it_next(ptr->i_ps);
					if (NULL != pps) {	$? ". pps"
						dk4papersize_delete(pps);
					}
				} while (NULL != pps);
				dk4sto_it_close(ptr->i_ps);
				ptr->i_ps = NULL;
			}
#if TRACE_DEBUG
			else {						$? "! i_ps"
			}
#endif
			dk4sto_close(ptr->s_ps);
			ptr->s_ps = NULL;
		}
#if TRACE_DEBUG
		else {							$? "! s_ps"
		}
#endif
		$? ". release memory"
		dk4mem_free(ptr);
	}
#if TRACE_DEBUG
	else {								$? "! ptr"
	}
#endif
	$? "- dk4papersize_coll_close"
}




int
dk4papersize_cmp(const void *l, const void *r, int cr)
{
	const dk4_paper_size_t	*pl		= NULL;
	const dk4_paper_size_t	*pr		= NULL;
	const dkChar			*nm		= NULL;
	int						 back	= 0;

	if (NULL != l) {
		if (NULL != r) {
			pl = (const dk4_paper_size_t *)l;
			switch (cr) {
				case 1 : {
					nm = (const dkChar *)r;
					back = dk4str_cmp(pl->name, nm);
				} break;
				default : {
					pr = (const dk4_paper_size_t *)r;
					back = dk4str_cmp(pl->name, pr->name);
				} break;
			}
		}
		else {
			back = 1;
		}
	}
	else {
		if (NULL != r) {
			back = -1;
		}
	}
	return back;
}



static
int
dk4papersize_i_add_one_default_size(
	dk4_paper_size_collection_t	*pscptr,
	const dkChar				*name,
	double						 w,
	double						 h,
	double						 i,
	double						 o,
	double						 t,
	double						 b,
	dk4_er_t					*erp
)
{
	dk4_paper_size_t	*ptr;
	int					 back	= 0;
	$? "+ dk4papersize_i_add_one_default_size \"%!ds\"", name
	ptr = dk4papersize_new(name, erp);
	if (NULL != ptr) {			$? ". ptr"
		ptr->w = w; ptr->h = h; ptr->i = i; ptr->o = o; ptr->t = t; ptr->b = b;
		$? ". w = %g", w
		$? ". h = %g", h
		$? ". i = %g", i
		$? ". o = %g", o
		$? ". t = %g", t
		$? ". b = %g", b
		if (0 != dk4sto_add(pscptr->s_ps, ptr, erp)) {
			back = 1;			$? ". add"
		}
		else {					$? "! add"
			dk4papersize_delete(ptr);
			ptr = NULL;
		}
	}
#if TRACE_DEBUG
	else {						$? "! ptr"
	}
#endif
	$? "- dk4papersize_i_add_one_default_size %d", back
	return back;
}



static
int
dk4papersize_i_add_default_sizes(
	dk4_paper_size_collection_t	*pscptr,
	dk4_er_t					*erp
)
{
	int					 back = 0;
	$? "+ dk4papersize_i_add_default_sizes"
	back = dk4papersize_i_add_one_default_size(
		pscptr, default_paper_sizes[0], 595.0, 842.0, 0.0, 0.0, 0.0, 0.0, erp
	);
	if (0 == back) { goto finished; }

	back = dk4papersize_i_add_one_default_size(
		pscptr, default_paper_sizes[1], 595.0, 842.0, 56.0, 28.0, 14.0, 14.0, erp
	);
	if (0 == back) { goto finished; }

	back = dk4papersize_i_add_one_default_size(
		pscptr, default_paper_sizes[2], 612.0, 792.0, 0.0, 0.0, 0.0, 0.0, erp
	);
	if (0 == back) { goto finished; }

	back = dk4papersize_i_add_one_default_size(
		pscptr, default_paper_sizes[3], 612.0, 792.0, 56.0, 28.0, 14.0, 14.0, erp
	);
	if (0 == back) { goto finished; }

	back = 1;

	finished:
	$? "- dk4papersize_i_add_default_sizes %d", back
	return back;
}




dk4_paper_size_collection_t *
dk4papersize_coll_open(dk4_er_t *erp)
{
	dk4_paper_size_collection_t	*back	= NULL;
	int							 ok		= 0;
	$? "+ dk4papersize_coll_open"
	back = dk4mem_new(dk4_paper_size_collection_t,1,erp);
	if (NULL != back) {
		back->i_ps = NULL;
		back->s_ps = dk4sto_open(erp);
		if (NULL != back->s_ps) {
			(void)dk4sto_set_comp(back->s_ps, dk4papersize_cmp, 0);
			back->i_ps = dk4sto_it_open(back->s_ps, erp);
			if (NULL != back->i_ps) {
				ok = dk4papersize_i_add_default_sizes(back, erp);
			}
		}
		if (0 == ok) {
			dk4papersize_coll_close(back);
			back = NULL;
		}
	} $? "- dk4papersize_coll_open %d", TR_IPTR(back)
	return back;
}




const dk4_paper_size_t *
dk4papersize_coll_find(
	dk4_paper_size_collection_t	*ptr,
	const dkChar				*name,
	dk4_er_t					*erp
)
{
	dk4_paper_size_t	*back	= NULL;
	$? "+ dk4papersize_coll_find %d \"%!ds\"", TR_IPTR(ptr), TR_STR(name)
	if ((NULL != ptr) && (NULL != name)) {
		back = (dk4_paper_size_t *)dk4sto_it_find_like(ptr->i_ps, name, 1);
		if (NULL == back) {
			dk4error_set_simple_error_code(erp, DK4_E_NOT_FOUND);
		}
	}
	else {
		dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
	} $? "- dk4papersize_coll_find %d", TR_IPTR(back)
	return ((const dk4_paper_size_t *)back);
}



double
dk4papersize_get_width(const dk4_paper_size_t *psptr)
{
	double		 back = -1.0;
	if (NULL != psptr) {
		back = psptr->w;
	}
	return back;
}



double
dk4papersize_get_height(const dk4_paper_size_t *psptr)
{
	double		 back = -1.0;
	if (NULL != psptr) {
		back = psptr->h;
	}
	return back;
}



double
dk4papersize_get_left_border(const dk4_paper_size_t *psptr)
{
	double		 back = -1.0;
	if (NULL != psptr) {
		back = psptr->i;
	}
	return back;
}



double
dk4papersize_get_right_border(const dk4_paper_size_t *psptr)
{
	double		 back = -1.0;
	if (NULL != psptr) {
		back = psptr->o;
	}
	return back;
}



double
dk4papersize_get_top_border(const dk4_paper_size_t *psptr)
{
	double		 back = -1.0;
	if (NULL != psptr) {
		back = psptr->t;
	}
	return back;
}



double
dk4papersize_get_bottom_border(const dk4_paper_size_t *psptr)
{
	double		 back = -1.0;
	if (NULL != psptr) {
		back = psptr->b;
	}
	return back;
}



const dkChar *
dk4papersize_get_name(const dk4_paper_size_t *psptr)
{
	const dkChar	*back	= NULL;
	if (NULL != psptr) {
		back = psptr->name;
	}
	return back;
}



size_t
dk4papersize_coll_size(dk4_paper_size_collection_t *ptr)
{
	size_t	back	= 0;
	if (NULL != ptr) {
		dk4sto_it_reset(ptr->i_ps);
		while (NULL != dk4sto_it_next(ptr->i_ps)) {
			back++;
		}
	}
	return back;
}



void
dk4papersize_coll_reset(dk4_paper_size_collection_t *ptr)
{
	if (NULL != ptr) {
		dk4sto_it_reset(ptr->i_ps);
	}
}



const dk4_paper_size_t *
dk4papersize_coll_next(dk4_paper_size_collection_t *ptr)
{
	dk4_paper_size_t	*back	= NULL;
	if (NULL != ptr) {
		back = (dk4_paper_size_t *)dk4sto_it_next(ptr->i_ps);
	}
	return ((const dk4_paper_size_t *)back);
}



const dk4_paper_size_t *
dk4papersize_coll_get(dk4_paper_size_collection_t *ptr, size_t n)
{
	dk4_paper_size_t	*back	= NULL;
	size_t				 i		= 0;

	if (NULL != ptr) {
		dk4sto_it_reset(ptr->i_ps);
		do {
			back = (dk4_paper_size_t *)dk4sto_it_next(ptr->i_ps);
		} while ((NULL != back) && (++i <= n));
	}
	return ((const dk4_paper_size_t *)back);
}



/**	Process one input line.
	@param	obj		Reader object.
	@param	line	Current line to process.
	@param	lineno	Line number.
	@param	erp		Error report, may be NULL.
	@return	
	DK4_TSP_RES_OK		if processing succeeded,
	DK4_TSP_RES_ERROR	on errors (can continue),
	DK4_TSP_RES_FATAL	on fatal errors (can not continue).

*/

static
int
dk4papersize_line_handler(
	void			*obj,
	dkChar			*line,
	dk4_um_t		 lineno,
	dk4_er_t		*erp
)
{
	double						 val[6];	/* w, h, i, o, t, b */
	dkChar						*tok[16];	/* tokens from the value side */
	dk4_paper_size_collection_t	*coll;		/* collection to complete */
	dk4_paper_size_t			*ps;		/* paper size to modify */
	reader_obj_t				*rdo;		/* reader object */
	const dkChar				*ep;		/* end pointer after double value */
	dkChar						*pls;		/* Line start */
	dkChar						*pval;		/* Start of value side */
	size_t						 ntok;		/* number of tokens found */
	size_t						 i;			/* traverse tokens */
	int							 back	= DK4_TSP_RES_OK;
	$? "+ dk4papersize_line_handler \"%!ds\"", line
	/*	Retrieve pointers
	*/
	rdo = (reader_obj_t *)obj;
	coll = rdo->coll;
	/*
		Find start of line, ignore empty lines
	*/
	pls = dk4str_start(line, NULL);
	if (NULL == pls) {						$? ". empty line"
		goto finished;
	}
	/*
		Ignore comment lines
	*/
	if (dkT('#') == *pls) {					$? ". comment"
		goto finished;
	}
	/*	Find value side
	*/
	pval = dk4str_chr(pls, dkT('='));
	if (NULL == pval) {
		/* ERROR: Syntax */
		dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
		back = DK4_TSP_RES_ERROR;
		goto finished;
	}
	/*	Check whether value side contains text
	*/
	*(pval++) = dkT('\0');
	pval = dk4str_start(pval, NULL);
	if (NULL == pval) {
		/* ERROR: Syntax */
		dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
		back = DK4_TSP_RES_ERROR;
		goto finished;
	}
	/*	Check name length
	*/
	dk4str_rtwh(pls, NULL);
	if (0 == dk4str_len(pls)) {
		/* ERROR: Syntax */
		dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
		back = DK4_TSP_RES_ERROR;
		goto finished;
	}
	/*	Tokenize string
	*/
	ntok = dk4str_tokenize(tok, 16, pval, NULL, NULL);
	if ((2 > ntok) || (6 < ntok)) {
		/* ERROR: Syntax */
		dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
		back = DK4_TSP_RES_ERROR;
		goto finished;
	}
	/*	Initialize values
	*/
	for (i = 0; i < 6; i++) { val[i] = 0.0; }
	/*
		Process tokens to values
	*/
	for (i = 0; i < ntok; i++) {
		ep = NULL;
		if (0 == dk4ma_input_dk_double(&(val[i]), tok[i], &ep, 1, NULL)) {
			/* ERROR: Syntax */
			dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
			back = DK4_TSP_RES_ERROR;
			goto finished;
		}
	}
	/*	Modify existing paper size or create a new one
	*/
	ps = (dk4_paper_size_t *)dk4sto_it_find_like(coll->i_ps, pls, 1);
	if (NULL == ps) {
		ps = dk4papersize_new(pls, NULL);
		if (NULL != ps) {
			if (0 == dk4sto_add(coll->s_ps, ps, NULL)) {
				/* ERROR: Memory */
				dk4error_set_simple_error_code(
					erp, DK4_E_MEMORY_ALLOCATION_FAILED
				);
				dk4papersize_delete(ps);
				ps = NULL;
				back = DK4_TSP_RES_FATAL;
			}
		}
		else {
			/* ERROR: Memory */
			dk4error_set_simple_error_code(erp, DK4_E_MEMORY_ALLOCATION_FAILED);
			back = DK4_TSP_RES_FATAL;
		}
	}
	if (NULL == ps) { goto finished; }
	ps->w = val[0]; ps->h = val[1]; ps->i = val[2];
	ps->o = val[3]; ps->t = val[4]; ps->b = val[5];

	finished:
	$? "- dk4papersize_line_handler %d", back
	return back;
}




/**	Apply a file to a paper size collection.
	@param	coll	Collection to modify.
	@param	fn		Configuration file name.
	@param	enc		Encoding used in memory.
	@param	erp		Error report, may be NULL.
	@return	1 on success, 0 on errors.
*/
static
int
dk4paper_apply_file(
	dk4_paper_size_collection_t	*coll,
	const dkChar				*fn,
	int							 enc,
	dk4_er_t					*erp
)
{
	char			 ib[4096];
	dkChar			 il[1024];
	dk4_tspdk_t		 tsp;
	reader_obj_t	 rdo;
	dk4_stream_t	*istrm		= NULL;
	size_t			 rb			= 0;
	int				 cc			= 1;
	int				 res		= 0;
	int		 		 back		= 1;
	$? "+ dk4paper_apply_file \"%!ds\"", fn
	/*	Open input stream
	*/
	istrm = dk4stream_open_file_reader(fn, erp);
	if (NULL == istrm) { goto finished; }
	/*
		Set up reader structure
	*/
	rdo.coll = coll;
	/*
		Set up text processing
	*/
	res = dk4tspdk_setup_line(
		&tsp, &rdo, dk4papersize_line_handler, il, DK4_SIZEOF(il,dkChar),
		enc,
		(
			(DK4_ENCODING_UTF8 == enc) ?
			(DK4_FILE_ENCODING_UTF8) : (DK4_FILE_ENCODING_ASCII)
		),
		erp
	);
	if (0 == res) { goto finished; }
	/*
		Process input file
	*/
	res = DK4_TSP_RES_OK;
	do {
		$? ". start of loop"
		cc = 0;
		rb = sizeof(ib);
		if (0 != dk4stream_read(ib, &rb, istrm, erp)) {	$? ". read ok"
			if (0 < rb) {								$? ". rb ok"
				res = dk4tspdk_add_bytes(&tsp, (const unsigned char *)ib, rb);
				if (DK4_TSP_RES_FATAL == res) {			$? "! fatal error"
					back = 0;
				}
				else {									$? ". processing ok"
					cc = 1;
				}
			}
#if TRACE_DEBUG
			else {										$? ". rb = 0"
			}
#endif
		}
#if TRACE_DEBUG
		else {											$? "! read"
		}
#endif
		$? ". end of loop"
	} while (1 == cc);
	/*
		Finalize text stream processor
	*/
	if (DK4_TSP_RES_FATAL != res) {
		if (DK4_TSP_RES_FATAL == dk4tspdk_finish(&tsp)) {	$? "! fatal"
			back = 0;
		}
	}

	finished:
	if (NULL != istrm) { dk4stream_close(istrm, NULL); }
	$? "- dk4paper_apply_file %d", back
	return back;
}



dk4_paper_size_collection_t *
dk4papersize_coll_for_application(
	const dkChar	*progname,
	const dkChar	*grpname,
	dk4_er_t		*erp
)
{
	dkChar						 fnb[DK4_MAX_PATH];		/* Construct filename */
	dkChar					 	 home[DK4_MAX_PATH];	/* User home dir */
	dkChar						 langbuf[16];			/* Language */
	dkChar						 regbuf[16];			/* Region */
	dk4_paper_size_collection_t	*back	= NULL;			/* Result */
	size_t						 i;						/* File search index */
	int							 enc;					/* Encoding */
	int							 res;					/* Operation result */
	int							 ok;					/* Flag: No error */
	$? "+ dk4_paper_size_collection_t"
	/*	Create default collection
	*/
	back = dk4papersize_coll_open(erp);
	if (NULL == back) {					$? "! memory"
		goto finished;
	}									$? ". collection opened"
	/*	Check program and program group name
	*/
	if ((NULL == progname) || (NULL == grpname)) {	$? "! args"
		dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
		goto finished;
	}									$? ". arguments ok"
	/*	Find users home directory.
	*/
	if (0 == dk4user_get_homedir(home, DK4_SIZEOF(home,dkChar), 0, NULL)) {
		goto finished;
	}									$? ". home = \"%!ds\"", home
	/*	Find encoding
	*/
	res = dk4loc_get_settings(
		langbuf, DK4_SIZEOF(langbuf,dkChar), regbuf, DK4_SIZEOF(regbuf,dkChar),
		&enc, NULL
	);									$? ". enc = %d", enc
	if (0 == res) {
		enc = DK4_ENCODING_ASCII;
	}									$? ". enc = %d", enc
	/*	Apply configuration files from build-in directory names
	*/
	ok = 1;
	for (i = 0; i <= DK4_FS_CONF_MAX; i++) {
#if DK4_HAVE_COMPATDKTOOLS3
		res = dk4fs_config_compat_one(
			fnb, DK4_SIZEOF(fnb,dkChar), conf_file_names[1],
			dk4inst_get_directory(2), dk4inst_get_directory(1), home,
			progname, grpname, i, 1, 1, NULL
		);
		if (0 != res) {					$? ". apply \"%!ds\"", fnb
			if (0 == dk4paper_apply_file(back, fnb, enc, erp)) {
				ok = 0;					$? "! failed \"%!ds\"", fnb
			}
		}
#endif
		res = dk4fs_config_one(
			fnb, DK4_SIZEOF(fnb,dkChar), conf_file_names[0],
			dk4inst_get_directory(2), dk4inst_get_directory(1), home,
			progname, grpname, i, 1, NULL
		);
		if (0 != res) {					$? ". apply \"%!ds\"", fnb
			if (0 == dk4paper_apply_file(back, fnb, enc, erp)) {
				ok = 0;					$? "! failed \"%!ds\"", fnb
			}
		}
	}
	if (0 == ok) {						$? "! fatal errors"
		dk4papersize_coll_close(back);
		back = NULL;
	}

	finished:
	$? "- dk4_paper_size_collection_t %d", TR_IPTR(back)
	return back;
}



/* vim: set ai sw=4 ts=4 : */