implement Pslib; include "sys.m";	sys: Sys; include "draw.m";	draw : Draw;Image, Display,Rect,Point : import draw; include "bufio.m";	bufmod : Bufio; include "tk.m";	tk: Tk;	Toplevel: import tk; Iobuf : import bufmod; include "string.m";	str : String; include "daytime.m";	time : Daytime; include "pslib.m"; # old module declaration.# this whole thing needs a revamp, so almost all the old external# linkages have been removed until there's time to do it properly.#Pslib : module #{#	PATH:		con "/dis/lib/pslib.dis";##	init:	fn(env: ref Draw->Context, t: ref Tk->Toplevel, boxes: int, deb: int): string;#	getfonts:		fn(input: string): string;#	preamble:		fn(ioutb: ref Bufio->Iobuf, bbox: Draw->Rect): string;#	trailer:		fn(ioutb: ref Bufio->Iobuf, pages: int): string;#	printnewpage:	fn(pagenum: int, end: int, ioutb: ref Bufio->Iobuf);#	parseTkline:	fn(ioutb: ref Bufio->Iobuf, input: string): string;#	stats:		fn(): (int, int, int);#	deffont:		fn(): string;#	image2psfile:	fn(ioutb: ref Bufio->Iobuf, im: ref Draw->Image, dpi: int) : string;#}; ASCII,RUNE,IMAGE : con iota; Iteminfo : adt{	itype: int;	offset: int;		# offset from the start of line.	width: int;		# width....	ascent: int;	# ascent of the item	font: int;		# font 	line : int;		# line its on	buf : string;	}; Lineinfo : adt{	xorg: int;	yorg: int;	width: int;	height: int;	ascent: int;};  font_arr := array[256] of {* => (-1,"")};remap := array[20] of (string,string); PXPI : con 100;PTPI : con 100; boxes: int;debug: int;totitems: int;totlines: int;curfont: int;def_font: string;def_font_type: int;curfonttype: int;pagestart: int;ctxt: ref Draw->Context;t: ref Toplevel; nomod(s: string){	sys->print("pslib: cannot load %s: %r\n", s);	raise "fail:bad module";} init(bufio: Bufio){	sys = load Sys Sys->PATH;	draw = load Draw Draw->PATH;	tk= load Tk Tk->PATH;	if (tk == nil)		nomod(Tk->PATH);	str = load String String->PATH;	if (str == nil)		nomod(String->PATH);	bufmod = bufio;}  oldinit(env: ref Draw->Context, d: ref Toplevel, nil: int,deb: int): string{	sys = load Sys Sys->PATH;	str = load String String->PATH;	draw = load Draw Draw->PATH;	tk= load Tk Tk->PATH;	bufmod = load Bufio Bufio->PATH;	ctxt=env;	t=d;	debug = deb;	totlines=0;	totitems=0;	pagestart=0;	boxes=0; #box;	curfont=0;	e := loadfonts();	if (e != "")		return e;	return "";} stats(): (int,int,int){	return (totitems,totlines,curfont);} loadfonts() : string{	input : string;	iob:=bufmod->open("/fonts/psrename",bufmod->OREAD);	if (iob==nil)		return sys->sprint("can't open /fonts/psrename: %r");	i:=0;	while((input=iob.gets('\n'))!=nil){		(tkfont,psfont):=str->splitl(input," ");		psfont=psfont[1:len psfont -1];		remap[i]=(tkfont,psfont);		i++;	}	return "";} preamble(ioutb: ref Iobuf, bb: Rect){	time = load Daytime Daytime->PATH;	username := "";	fd := sys->open("/dev/user", sys->OREAD);	if(fd != nil) {		b := array[128] of byte;		n := sys->read(fd, b, len b);		b=b[0:n];		username = string b;		fd = nil;	}	if(bb.max.x == 0 && bb.max.y == 0) {		bb.max.x = 612;		bb.max.y = 792;	}	ioutb.puts("%!PS-Adobe-3.0\n");	ioutb.puts(sys->sprint("%%%%Creator: Pslib 1.0 (%s)\n",username));	ioutb.puts(sys->sprint("%%%%CreationDate: %s\n",time->time()));	ioutb.puts("%%Pages: (atend) \n");	ioutb.puts(sys->sprint("%%%%BoundingBox: %d %d %d %d\n", bb.min.x, bb.min.y, bb.max.x, bb.max.y));	ioutb.puts("%%EndComments\n");	ioutb.puts("%%BeginProlog\n");	ioutb.puts("/doimage {\n");	ioutb.puts("/bps exch def\n");	ioutb.puts("/width exch def\n");	ioutb.puts("/height exch def\n");	ioutb.puts("/xstart exch def\n");	ioutb.puts("/ystart exch def\n");	ioutb.puts("/iwidth exch def\n");	ioutb.puts("/ascent exch def\n");	ioutb.puts("/iheight exch def\n");	ioutb.puts("gsave\n");	if(boxes)		ioutb.puts("xstart ystart iwidth iheight rectstroke\n");	# if bps==8, use inferno colormap; else (bps < 8) it's grayscale	ioutb.puts("bps 8 eq\n");	ioutb.puts("{\n");	ioutb.puts("[/Indexed /DeviceRGB 255 \n");	ioutb.puts("<ffffff ffffaa ffff55 ffff00 ffaaff ffaaaa ffaa55 ffaa00 ff55ff ff55aa ff5555 ff5500\n");	ioutb.puts("ff00ff ff00aa ff0055 ff0000 ee0000 eeeeee eeee9e eeee4f eeee00 ee9eee ee9e9e ee9e4f\n");	ioutb.puts("ee9e00 ee4fee ee4f9e ee4f4f ee4f00 ee00ee ee009e ee004f dd0049 dd0000 dddddd dddd93\n");	ioutb.puts("dddd49 dddd00 dd93dd dd9393 dd9349 dd9300 dd49dd dd4993 dd4949 dd4900 dd00dd dd0093\n");	ioutb.puts("cc0088 cc0044 cc0000 cccccc cccc88 cccc44 cccc00 cc88cc cc8888 cc8844 cc8800 cc44cc\n");	ioutb.puts("cc4488 cc4444 cc4400 cc00cc aaffaa aaff55 aaff00 aaaaff bbbbbb bbbb5d bbbb00 aa55ff\n");	ioutb.puts("bb5dbb bb5d5d bb5d00 aa00ff bb00bb bb005d bb0000 aaffff 9eeeee 9eee9e 9eee4f 9eee00\n");	ioutb.puts("9e9eee aaaaaa aaaa55 aaaa00 9e4fee aa55aa aa5555 aa5500 9e00ee aa00aa aa0055 aa0000\n");	ioutb.puts("990000 93dddd 93dd93 93dd49 93dd00 9393dd 999999 99994c 999900 9349dd 994c99 994c4c\n");	ioutb.puts("994c00 9300dd 990099 99004c 880044 880000 88cccc 88cc88 88cc44 88cc00 8888cc 888888\n");	ioutb.puts("888844 888800 8844cc 884488 884444 884400 8800cc 880088 55ff55 55ff00 55aaff 5dbbbb\n");	ioutb.puts("5dbb5d 5dbb00 5555ff 5d5dbb 777777 777700 5500ff 5d00bb 770077 770000 55ffff 55ffaa\n");	ioutb.puts("4fee9e 4fee4f 4fee00 4f9eee 55aaaa 55aa55 55aa00 4f4fee 5555aa 666666 666600 4f00ee\n");	ioutb.puts("5500aa 660066 660000 4feeee 49dddd 49dd93 49dd49 49dd00 4993dd 4c9999 4c994c 4c9900\n");	ioutb.puts("4949dd 4c4c99 555555 555500 4900dd 4c0099 550055 550000 440000 44cccc 44cc88 44cc44\n");	ioutb.puts("44cc00 4488cc 448888 448844 448800 4444cc 444488 444444 444400 4400cc 440088 440044\n");	ioutb.puts("00ff00 00aaff 00bbbb 00bb5d 00bb00 0055ff 005dbb 007777 007700 0000ff 0000bb 000077\n");	ioutb.puts("333333 00ffff 00ffaa 00ff55 00ee4f 00ee00 009eee 00aaaa 00aa55 00aa00 004fee 0055aa\n");	ioutb.puts("006666 006600 0000ee 0000aa 000066 222222 00eeee 00ee9e 00dd93 00dd49 00dd00 0093dd\n");	ioutb.puts("009999 00994c 009900 0049dd 004c99 005555 005500 0000dd 000099 000055 111111 00dddd\n");	ioutb.puts("00cccc 00cc88 00cc44 00cc00 0088cc 008888 008844 008800 0044cc 004488 004444 004400\n");	ioutb.puts("0000cc 000088 000044 000000>\n");	ioutb.puts("] setcolorspace\n");	ioutb.puts("/decodemat [0 255] def\n");	ioutb.puts("}\n");	# else, bps != 8	ioutb.puts("{\n");	ioutb.puts("[/DeviceGray] setcolorspace\n");	ioutb.puts("/decodemat [1 0] def\n");	ioutb.puts("}\n");	ioutb.puts("ifelse\n");	ioutb.puts("xstart ystart translate \n");	ioutb.puts("iwidth iheight scale \n");	ioutb.puts("<<\n");	ioutb.puts("/ImageType 1\n");	ioutb.puts("/Width width \n");	ioutb.puts("/Height height \n");	ioutb.puts("/BitsPerComponent bps %bits/sample\n");	ioutb.puts("/Decode decodemat % Inferno cmap or DeviceGray value\n");	ioutb.puts("/ImageMatrix [width 0 0 height neg 0 height]\n");	ioutb.puts("/DataSource currentfile /ASCII85Decode filter\n");	ioutb.puts(">> \n");	ioutb.puts("image\n");	ioutb.puts("grestore\n");	ioutb.puts("} def\n");	ioutb.puts("%%EndProlog\n");	} trailer(ioutb : ref Iobuf,pages : int){	ioutb.puts("%%Trailer\n%%Pages: "+string pages+"\n%%EOF\n");}  printnewpage(pagenum : int,end : int, ioutb : ref Iobuf){	pnum:=string pagenum;	if (end){					# bounding box		if (boxes){			ioutb.puts("18 18 moveto 594 18 lineto 594 774 lineto 18 774 lineto"+								" closepath stroke\n");		}		ioutb.puts("showpage\n%%EndPage "+pnum+" "+pnum+"\n");	} else 		ioutb.puts("%%Page: "+pnum+" "+pnum+"\n");} printimage(ioutb: ref Iobuf, line: Lineinfo, imag: Iteminfo): (string,string){	RM:=612-18;	class:=tk->cmd(t,"winfo class "+imag.buf);#sys->print("Looking for [%s] of type [%s]\n",imag.buf,class);	if (line.xorg+imag.offset+imag.width>RM)		imag.width=RM-line.xorg-imag.offset;	case class {		"button" or "menubutton" =>			# try to get the text out and print it....			ioutb.puts(sys->sprint("%d %d moveto\n",line.xorg+imag.offset,							line.yorg));			msg:=tk->cmd(t,sys->sprint("%s cget -text",imag.buf));			ft:=tk->cmd(t,sys->sprint("%s cget -font",imag.buf));			sys->print("font is [%s]\n",ft);			ioutb.puts(sys->sprint("%d %d %d %d rectstroke\n",						line.xorg+imag.offset,line.yorg,imag.width,						line.height));			return (class,msg);		"label" =>			(im,nil,nil) := tk->getimage(t,imag.buf);			if (im!=nil){				bps := im.depth;				ioutb.puts(sys->sprint("%d %d %d %d %d %d %d %d doimage\n",						im.r.dy(),line.ascent,im.r.dx(),line.yorg,						line.xorg+imag.offset,im.r.dy(), im.r.dx(), bps));				imagebits(ioutb,im);			}			return (class,"");		"entry" =>			ioutb.puts(sys->sprint("%d %d moveto\n",line.xorg+imag.offset,					line.yorg));			ioutb.puts(sys->sprint("%d %d %d %d rectstroke\n",					line.xorg+imag.offset,line.yorg,imag.width,					line.height));			return (class,"");		* =>			sys->print("Unhandled class [%s]\n",class);			return (class,"Error");			}	return ("","");	} printline(ioutb: ref Iobuf,line : Lineinfo,items : array of Iteminfo){	xstart:=line.xorg;	wid:=xstart;	# items	if (len items == 0) return;	for(j:=0;j<len items;j++){		msg:="";		class:="";		if (items[j].itype==IMAGE)			(class,msg)=printimage(ioutb,line,items[j]);		if (items[j].itype!=IMAGE || class=="button"|| class=="menubutton"){			setfont(ioutb,items[j].font);			if (msg!=""){ 				# position the text in the center of the label				# moveto curpoint				# (msg) stringwidth pop xstart sub 2 div				ioutb.puts(sys->sprint("%d %d moveto\n",xstart+items[j].offset,						line.yorg+line.height-line.ascent));				ioutb.puts(sys->sprint("(%s) dup stringwidth pop 2 div",								msg));				ioutb.puts(" 0 rmoveto show\n");			}			else {				ioutb.puts(sys->sprint("%d %d moveto\n",					xstart+items[j].offset,line.yorg+line.height					-line.ascent));				ioutb.puts(sys->sprint("(%s) show\n",items[j].buf));			}		}		wid=xstart+items[j].offset+items[j].width;	}	if (boxes)		ioutb.puts(sys->sprint("%d %d %d %d rectstroke\n",line.xorg,line.yorg,									wid,line.height));} setfont(ioutb: ref Iobuf, font: int){	ftype : int;	fname : string;	if ((curfonttype & font) != curfonttype){		for(f:=0;f<curfont;f++){			(ftype,fname)=font_arr[f];				if ((ftype&font)==ftype)					break;		}		if (f==curfont){			fname=def_font;			ftype=def_font_type;		}		ioutb.puts(sys->sprint("%s setfont\n",fname));		curfonttype=ftype;	}}	parseTkline(ioutb: ref Iobuf, input: string): string{	thisline : Lineinfo;	PS:=792-18-18;	# page size in points		TM:=792-18;	# top margin in points	LM:=18;		# left margin 1/4 in. in#	BM:=18;		# bottom margin 1/4 in. in	x : int;	(x,input)=str->toint(input,10);	thisline.xorg=(x*PTPI)/PXPI;	(x,input)=str->toint(input,10);	thisline.yorg=(x*PTPI)/PXPI;	(x,input)=str->toint(input,10);	thisline.width=(x*PTPI)/PXPI;	(x,input)=str->toint(input,10);	thisline.height=(x*PTPI)/PXPI;	(x,input)=str->toint(input,10);	thisline.ascent=(x*PTPI)/PXPI;	(x,input)=str->toint(input,10);	# thisline.numitems=x;	if (thisline.width==0 || thisline.height==0)		return "";	if (thisline.yorg+thisline.height-pagestart>PS){		pagestart=thisline.yorg;		return "newpage";		# must resend this line....	}	thisline.yorg=TM-thisline.yorg-thisline.height+pagestart;	thisline.xorg+=LM;	(items, err) :=getline(totlines,input);	if(err != nil)		return err;	totitems+=len items;	totlines++;	printline(ioutb,thisline,items);	return "";} getfonts(input: string) : string{	tkfont,psfont : string;	j : int;	retval := "";	if (input[0]=='%')			return "";	# get a line of the form 	# 5::/fonts/lucida/moo.16.font	# translate it to...	# 32 f32.16	# where 32==1<<5 and f32.16 is a postscript function that loads the 	# appropriate postscript font (from remap)	# and writes it to fonts....	(bits,font):=str->toint(input,10);	if (bits!=-1)		bits=1<<bits;	else{		bits=1;		def_font_type=bits;		curfonttype=def_font_type;	}	font=font[2:];	for(i:=0;i<len remap;i++){		(tkfont,psfont)=remap[i];		if (tkfont==font)			break;	}	if (i==len remap)		psfont="Times-Roman";	(font,nil)=str->splitr(font,".");	(nil,font)=str->splitr(font[0:len font-1],".");	(fsize,nil):=str->toint(font,10);	fsize=(PTPI*3*fsize)/(2*PXPI);	enc_font:="f"+string bits+"."+string fsize;	ps_func:="/"+enc_font+" /"+psfont+" findfont "+string fsize+							" scalefont def\n";	sy_font:="sy"+string fsize;	xtra_func:="/"+sy_font+" /Symbol findfont "+string fsize+							" scalefont def\n";	for(i=0;i<len font_arr;i++){		(j,font)=font_arr[i];		if (j==-1) break;	}	if (j==len font_arr)		return "Error";	font_arr[i]=(bits,enc_font);	if (bits==1)		def_font=enc_font;	curfont++;	retval+= ps_func;	retval+= xtra_func;		return retval;} deffont() : string{	return def_font;}	getline(k : int,  input : string) : (array of Iteminfo, string){	lineval,args : string;	j, nb : int;	lw:=0;	wid:=0;	flags:=0;	item_arr := array[32] of {* => Iteminfo(-1,-1,-1,-1,-1,-1,"")};	curitem:=0;	while(input!=nil){		(nil,input)=str->splitl(input,"[");		if (input==nil)			break;		com:=input[1];		input=input[2:];		case com {		'A' =>			nb=0;			# get the width of the item			(wid,input)=str->toint(input,10);			wid=(wid*PTPI)/PXPI;			if (input[0]!='{')				return (nil, sys->sprint(					"line %d item %d Bad Syntax : '{' expected",						k,curitem));			# get the args.			(args,input)=str->splitl(input,"}");			# get the flags.			# assume there is only one int flag..			(flags,args)=str->toint(args[1:],16);			if (args!=nil && debug){				sys->print("line %d item %d extra flags=%s\n",						k,curitem,args);			}			if (flags<1024) flags=1;			item_arr[curitem].font=flags;			item_arr[curitem].offset=lw;			item_arr[curitem].width=wid;			lw+=wid;			for(j=1;j<len input;j++){				if ((input[j]==')')||(input[j]=='('))						lineval[len lineval]='\\';				if (input[j]=='[')					nb++;				if (input[j]==']')					if (nb==0)						break;					else 

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