/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
/*	  All Rights Reserved  	*/


/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved. The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */
     
/*
 * Copyright (c) 1983, 1984 1985, 1986, 1987, 1988, Sun Microsystems, Inc.
 * All Rights Reserved.
 */
  
/*	from OpenSolaris "tg.c	1.6	05/06/02 SMI"	 SVr4.0 1.1		*/

/*
 * Portions Copyright (c) 2005 Gunnar Ritter, Freiburg i. Br., Germany
 *
 * Sccsid @(#)tg.c	1.10 (gritter) 10/2/07
 */

 /* tg.c: process included text blocks */
# include "t..c"
# include <stdlib.h>
# include <inttypes.h>
# include <string.h>

/* get_text was originally gettext and was renamed */
char *
get_text(char *sp, int ilin, int icol, char *fn, char *sz)
{
	/* get a section of text */
	char *line = NULL;
	size_t linesize = 0;
	char *oname;
	const char *vs;
	if (texname==0) texct2 = texname = 300;
	if (texct2>0 && point(texct2)) {
		error("Too many text block diversions");
		return (char *)-1;
	}
	if (textflg==0)
		{
		fprintf(tabout, ".nr %d \\n(.lu\n", SL); /* remember old line length */
		textflg=1;
		}
	fprintf(tabout, ".eo\n");
	fprintf(tabout, ".am %02d 00\n", icol+80);
	fprintf(tabout, ".br\n");
	if (texct2 < 0)
		fprintf(tabout, ".di %c+\n", (int)texname);
	else
		fprintf(tabout, ".do di %d+\n", texct2);
	rstofill();
	if (fn && *fn) fprintf(tabout, ".nr %d \\n(.f\n.ft %s\n", S1, fn);
	fprintf(tabout, ".ft \\n(.f\n"); /* protect font */
	vs = vsize[stynum[ilin]][icol];
	if ((sz && *sz) || (vs && *vs))
		{
		fprintf(tabout, ".nr %d \\n(.v\n", S2);
		if (vs==0 || *vs==0) vs= "\\n(.s+2";
		if (sz && *sz)
			fprintf(tabout, ".ps %s\n",sz);
		fprintf(tabout, ".vs %s\n",vs);
		fprintf(tabout, ".if \\n(%du>\\n(.vu .sp \\n(%du-\\n(.vu\n", S2,S2);
		}
	if (cll[icol][0])
		fprintf(tabout, ".ll %sn\n", cll[icol]);
	else
		fprintf(tabout, ".ll \\n(%du*%du/%du\n",SL,ctspan(ilin,icol),ncol+1);
	fprintf(tabout,".if \\n(.l<\\n(%d .ll \\n(%du\n", icol+CRIGHT, icol+CRIGHT);
	if (ctype(ilin,icol)=='a')
		fprintf(tabout, ".ll -2n\n");
	fprintf(tabout, ".in 0\n");
	while (gets1(&line, &line, &linesize))
		{
		if (line[0]=='T' && line[1]=='}' && line[2]== tab) break;
		if (strcmp("T}", line) == 0) break;
		fprintf(tabout, "%s\n", line);
		}
	if (fn && *fn) fprintf(tabout, ".ft \\n(%d\n", S1);
	if (sz && *sz) fprintf(tabout, ".br\n.ps\n.vs\n");
	fprintf(tabout, ".br\n");
	fprintf(tabout, ".di\n");
	if (texct2 < 0)
		{
		fprintf(tabout, ".nr %c| \\n(dn\n", (int)texname);
		fprintf(tabout, ".nr %c- \\n(dl\n", (int)texname);
		}
	else
		{
		fprintf(tabout, ".do nr %d| \\n(dn\n", texct2);
		fprintf(tabout, ".do nr %d- \\n(dl\n", texct2);
		}
	fprintf(tabout, ".00\n");
	fprintf(tabout, ".ec \\\n");
	/* copy remainder of line */
	if (line[2])
		tcopy (sp, line+3);
	else
		*sp=0;
	oname = (char *)texname;
	if (texct2 < 0)
		texname = texstr[++texct];
	else
		texname = ++texct2;
	free(line);
	return oname;
}
void
untext(void)
{
	rstofill();
	fprintf(tabout, ".nf\n");
	fprintf(tabout, ".ll \\n(%du\n", SL);
}
char *
nreg(char *space, size_t siz, const char *_n, int c)
{
	int n = (intptr_t)_n;
	if (n < 128)
		snprintf(space, siz, "\\n(%c%c", n, c);
	else
		snprintf(space, siz, "\\n[%d%c]", n, c);
	return(space);
}
