#include <u.h>#include <libc.h>#include <thread.h>#include <omero.h>#include <plumb.h>#include <error.h>#include <draw.h>#include <b.h> Panel*	poster; static void*convimg(char* fn, long* lp){	int	p[2];	int	l;	char*	cmd;	char*	out;	long	tot, n;	long	nout; 	l = strlen(fn);	if (l < 5)		return nil;	if (!cistrcmp(fn+l-4, ".gif"))		cmd="/bin/gif";	else if (!cistrcmp(fn+l-4, ".jpg"))		cmd="/bin/jpg";	else if (!cistrcmp(fn+l-4, ".png"))		cmd="/bin/png";	else if (!cistrcmp(fn+l-4, ".ppm"))		cmd="/bin/ppm";	else		cmd= nil;	if (cmd == nil)		return nil;	if (pipe(p) < 0)		return nil;	switch(rfork(RFPROC|RFFDG|RFNOWAIT)){	case -1:		close(p[0]);		close(p[1]);		break;	case 0:		close(p[0]);		dup(p[1], 1);		close(p[1]);		execl(cmd, cmd, "-9", fn, nil);		sysfatal("exec failed: %r");		break;	default:		close(p[1]);		out = emalloc(128*1024);		nout = 128*1024;		for(tot = 0; ; tot +=n){			n = read(p[0], out+tot, nout - tot);			if (n <= 0)				break;			if (n == nout - tot){				nout += 128*1024;				out = erealloc(out, nout);			}		}		close(p[0]);		*lp = tot;		if (tot <= 0){			free(out);			out = nil;		}		return out;	}	return nil;}  static voidshowimg(Plumbmsg* m){	void*	img;	long	l; 	if (access(m->data, AREAD) < 0)		return;	img = convimg(m->data, &l);	if (img){		openpanel(poster, OWRITE|OTRUNC);		writepanel(poster, img, l);		closepanel(poster);		openpanelctl(poster);		panelctl(poster, "show\n");		closepanelctl(poster);		free(img);	}} voidomerogone(void){	fprint(2, "%s: terminated\n", argv0);	threadexitsall(nil);} voidusage(void){	fprint(2, "usage: %s [-d] [-p port]\n", argv0);	threadexitsall("usage");} voidthreadmain(int argc, char* argv[]){	Plumbmsg* m;	int plumbfd;	char*	port; 	port = "poster";	ARGBEGIN{	case 'd':		omerodebug++;		break;	case 'p':		port = EARGF(usage());		break;	default:		fprint(2, "usage: %s \n", argv0);		sysfatal("usage");	}ARGEND;	if (argc > 0){		fprint(2, "usage: %s\n", argv0);		sysfatal("usage");	}	plumbfd = createport(port);	if (plumbfd < 0)		sysfatal("poster port: %r");	poster = createpanel("oposter", "page", nil);	if (poster == nil)		sysfatal("createpanel: %r\n");	panelctl(poster, "tag\nhide\n");	closepanelctl(poster);	for(;;){		m = plumbrecv(plumbfd);		if(m == nil)			break;		showimg(m);		plumbfree(m);	}	close(plumbfd);	threadexitsall(nil);}