/*
	trf-table.c - table writing functions

	Ugly ugly ugly.
*/

# include	<stdio.h>
# include	<sys/types.h>
# include	"rtf.h"
# include	"rtf2troff.h"


static int	CellBorderLocIndex ();
static int	VCellBorderType ();
static char	*VCellBorderStr ();
static char	*HCellBorderStr ();


/*
	Border type tokens *follow* cell border location specifiers.
*/

void TblAttr ()
{
double	inch = (double) rtfParam / (double) rtfTpi;
int	i, j, loc;

	switch (rtfMinor)
	{
	case rtfCellBordBottom:
	case rtfCellBordTop:
	case rtfCellBordLeft:
	case rtfCellBordRight:
		if (its->nCells >= maxCell)
		{
			fprintf (stderr,
				"Borders specified for too many cells\n");
			break;
		}
		loc = CellBorderLocIndex (rtfMinor);
		/*
			Get border type tokens until non-type token seen,
			then route non-type token normally.
		*/
		for (;;)
		{
			(void) RTFGetToken ();
			if (!RTFCheckCM (rtfControl, rtfParAttr)
				|| (rtfMinor != rtfBorderSingle
					&& rtfMinor != rtfBorderThick
					&& rtfMinor != rtfBorderShadow
					&& rtfMinor != rtfBorderDouble
					&& rtfMinor != rtfBorderDot
					&& rtfMinor != rtfBorderHair))
				break;
			if (its->nCells < maxCell)
				its->border[its->nCells][loc] = rtfMinor;
		}
		RTFRouteToken ();	/* send non-border through router */
		break;
	case rtfRowDef:
		its->tableHeader = 0;
		its->nCells = 0;
		its->curCell = 0;
		for (i = 0; i < maxCell; i++)
		{
			its->cellPos[i] = 0;
			for (j = 0; j < 4; j++)
				its->border[i][j] = rtfNoBorderType;
		}
		its->tableLeft = 0;
		its->cellGap = 0;
		break;
	case rtfRowLeft:
		break;
	case rtfRowRight:
		break;
	case rtfRowCenter:
		break;
	case rtfRowGapH:
		its->cellGap = inch;
		break;
	case rtfRowHt:
		break;
	case rtfRowLeftEdge:
		its->tableLeft = inch;
		break;
	case rtfCellPos:
		if (its->nCells >= maxCell)
			fprintf (f, "max. table row cell count (%d) exceeded\n",
							maxCell);
		else
			its->cellPos[its->nCells++] = inch;
		break;
	case rtfMergeRngFirst:
		break;
	case rtfMergePrevious:
		break;
	}
}


void BeginTbl ()
{
int	i, n;
double	cwid;
char	*p;

	Flush ();
	FlushState ();
	SaveTblFPV ();		/* save current font, ps, vs */
	fprintf (f, ".TS\n");
	fprintf (f, "center tab(^);\n");
	for (i = 0; i < its->nCells; i++)
	{
		if ((p = VCellBorderStr (VCellBorderType (i))) != NULL)
			fprintf (f, "%s ", p);
		cwid = its->cellPos[i];
		if (i > 0)
			cwid -= its->cellPos[i-1];
		cwid -= EnWidth ();
		fprintf (f, "l1w(%gi) ", cwid);
	}
	if ((p = VCellBorderStr (VCellBorderType (its->nCells))) != NULL)
		fprintf (f, "%s ", p);
	fprintf (f, ".\n");
	++its->tableHeader;

	/* print top borders */
	n = 0;
	for (i = 0; i < its->nCells; i++)
	{
		if (its->border[i][topIndex] != rtfNoBorderType)
			++n;
	}
	if (n > 0)
	{
		for (i = 0; i < its->nCells; i++)
		{
			if (i > 0)
				fprintf (f, "^");
			if ((p = HCellBorderStr (its->border[i][topIndex]))
								!= NULL)
				fprintf (f, "%s", p);
		}
		fprintf (f, "\n");
	}
}


void EndTbl ()
{
int	i, n;
char	*p;

	/* print bottom borders */
	n = 0;
	for (i = 0; i < its->nCells; i++)
	{
		if (its->border[i][bottomIndex] != rtfNoBorderType)
			++n;
	}
	if (n > 0)
	{
		for (i = 0; i < its->nCells; i++)
		{
			if (i > 0)
				fprintf (f, "^");
			if ((p = HCellBorderStr (its->border[i][bottomIndex]))
								!= NULL)
				fprintf (f, "%s", p);
		}
		fprintf (f, "\n");
	}
	fprintf (f, ".TE\n");	/* this undoes ps/vs... */
	FlushTblFPV ();		/* so redo it.  ugh. */
	FlushState ();
	its->tableHeader = 0;
	its->curCell = 0;
}


/*
	BeginCell() called when first \intbl in row is seen and after
	each \cell; EndCell() called whenever \cell or \row are seen.
	These do nothing if the cell number is greater than would be
	expected given the number of cell positions found in the table
	layout information.  (It *is* possible to find information
	beyond the last cell; Word for Macintosh, at least, seems to put an
	empty cell at the end of each row.)
*/

void BeginCell ()
{
	/* accept cells 0..nCells-1 */
	if (its->curCell < its->nCells)
	{
		Flush ();
		fprintf (f, "T{\n");
		/*FlushState ();*/
		FlushTblFPV ();		/* set up correct font, ps, vs */
	}
	inTable = 1;
}


void EndCell ()
{
	Flush ();
	/* accept cells 0..nCells-1 */
	if (its->curCell < its->nCells)
	{
		fprintf (f, "T}");
	}
	++its->curCell;
	if (its->curCell < its->nCells)
		fprintf (f, "^");	/* more cells to go */
	else if (its->curCell == its->nCells)
		fprintf (f, "\n");	/* no more cells to go */
	inTable = 0;
}


static int CellBorderLocIndex (loc)
int	loc;
{
	switch (loc)
	{
	case rtfCellBordLeft: return (leftIndex);
	case rtfCellBordRight: return (rightIndex);
	case rtfCellBordTop: return (topIndex);
	case rtfCellBordBottom: return (bottomIndex);
	}
	fprintf (stderr, "CellBorderLocIndex: bad argument (%d)\n", loc);
	exit (1);
}


/*
	Determine vertical border for left of cell i.  Takes into account
	right border of i-1 and left border of i, with the latter taking
	precedence.  Two special cases are handled implicitly in code
	below.  When i = 0, return left border of cell 0.  When i = nCells,
	return right border of cell nCells-1.
*/

static int VCellBorderType (i)
int	i;
{
int	border = rtfNoBorderType;

	if (i >= 0 && i < its->nCells)
		border = its->border[i][leftIndex];
	if (i > 0 && i <= its->nCells && border == rtfNoBorderType)
		border = its->border[i-1][rightIndex];
	return (border);
}


static char *VCellBorderStr (type)
int	type;
{
	switch (type)
	{
	case rtfBorderShadow:
	case rtfBorderThick:
	case rtfBorderDot:
	case rtfBorderHair:
	case rtfBorderSingle: return ("|");
	case rtfBorderDouble: return ("||");
	}
	return (NULL);
}


static char *HCellBorderStr (type)
int	type;
{
	switch (type)
	{
	case rtfBorderShadow:
	case rtfBorderThick:
	case rtfBorderDot:
	case rtfBorderHair:
	case rtfBorderSingle: return ("_");
	case rtfBorderDouble: return ("=");
	}
	return (NULL);
}