/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include "a.h" /* * 5.  Vertical spacing. */ /* set vertical baseline spacing */voidvs(int v){	if(v == 0)		v = getnr(L(".v0"));	nr(L(".v0"), getnr(L(".v")));	nr(L(".v"), v);} voidr_vs(int argc, Rune **argv){	if(argc < 2)		vs(eval(L("12p")));	else if(argv[1][0] == '+')		vs(getnr(L(".v"))+evalscale(argv[1]+1, 'p'));	else if(argv[1][0] == '-')		vs(getnr(L(".v"))-evalscale(argv[1]+1, 'p'));	else		vs(evalscale(argv[1], 'p'));} /* set line spacing */voidls(int v){	if(v == 0)		v = getnr(L(".ls0"));	nr(L(".ls0"), getnr(L(".ls")));	nr(L(".ls"), v);}voidr_ls(int argc, Rune **argv){	ls(argc < 2 ? 0 : eval(argv[1]));} /* .sp - space vertically *//* .sv - save a contiguous vertical block */voidsp(int v){	Rune buf[100];	double fv;		br();	fv = v * 1.0/UPI;	if(fv > 5)		fv = eval(L("1v")) * 1.0/UPI;	runesnprint(buf, nelem(buf), "<p style=\"margin-top: 0; margin-bottom: %.2fin\"></p>\n", fv);	outhtml(buf);}voidr_sp(int argc, Rune **argv){	if(getnr(L(".ns")))		return;	if(argc < 2)		sp(eval(L("1v")));	else{		if(argv[1][0] == '|'){			/* XXX if there's no output yet, do the absolute! */			if(verbose)				warn("ignoring absolute .sp %d", eval(argv[1]+1));			return;		}		sp(evalscale(argv[1], 'v'));	}} voidr_ns(int argc, Rune **argv){	USED(argc);	USED(argv);	nr(L(".ns"), 1);} voidr_rs(int argc, Rune **argv){	USED(argc);	USED(argv);	nr(L(".ns"), 0);} voidt5init(void){		addreq(L("vs"), r_vs, -1);	addreq(L("ls"), r_ls, -1);	addreq(L("sp"), r_sp, -1);	addreq(L("sv"), r_sp, -1);	addreq(L("os"), r_nop, -1);	addreq(L("ns"), r_ns, 0);	addreq(L("rs"), r_rs, 0); 	nr(L(".v"), eval(L("12p")));	nr(L(".v0"), eval(L("12p")));	nr(L(".ls"), 1);	nr(L(".ls0"), 1);}