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mothra: remove default and badurl pages, set /dev/label, cleanup

--- a/sys/src/cmd/mothra/mothra.c

+++ b/sys/src/cmd/mothra/mothra.c

@@ -24,20 +24,6 @@

 Panel *menu3;	/* button 3 menu */

 Mouse mouse;	/* current mouse data */

 char mothra[] = "mothra!";

-Url defurl={

-	"http://cat-v.org/",

-	"",

-	"http://cat-v.org/",

-	"",

-	"",

-};

-Url badurl={

-	"",

-	"",

-	"No file loaded",

-	"",

-	"",

-};

 Cursor patientcurs={

 	0, 0,

 	0x01, 0x80, 0x03, 0xC0, 0x07, 0xE0, 0x07, 0xe0,

@@ -114,17 +100,13 @@

 int wwwtop=0;

 Www *www(int index){

-	static Www a[1+NWWW];

-	return &a[1+(index % NWWW)];

+	static Www a[NWWW];

+	return &a[index % NWWW];

 }

 int nwww(void){

 	return wwwtop<NWWW ? wwwtop : NWWW;

 }

-void err(Display *, char *msg){

-	fprint(2, "err: %s (%r)\n", msg);

-	abort();

-}

 int subpanel(Panel *obj, Panel *subj){

 	if(obj==0) return 0;

 	if(obj==subj) return 1;

@@ -296,8 +278,6 @@

 		exits("usage");

 	case 0:

 		url=getenv("url");

-		if(url==0 || url[0]=='\0')

-			url=defurl.fullname;

 		break;

 	case 1: url=argv[0]; break;

 	}

@@ -307,7 +287,7 @@

 		close(errfile);

 	}

 	logfile=mkmfile("mothra.log", 0666|DMAPPEND);

-	if(initdraw(err, 0, "mothra") < 0)

+	if(initdraw(0, 0, mothra) < 0)

 		sysfatal("initdraw: %r");

 	display->locking = 1;

 	chrwidth=stringwidth(font, "0");

@@ -321,23 +301,14 @@

 	if(debug) notify(dienow);

 	getfonts();

 	hrule=allocimage(display, Rect(0, 0, 2048, 5), screen->chan, 0, DWhite);

-	if(hrule==0){

-		fprint(2, "%s: can't allocimage!\n", argv[0]);

-		exits("no mem");

-	}

+	if(hrule==0)

+		sysfatal("can't allocimage!");

 	draw(hrule, Rect(0,1,1280,3), display->black, 0, ZP);

 	linespace=allocimage(display, Rect(0, 0, 2048, 5), screen->chan, 0, DWhite);

-	if(linespace==0){

-		fprint(2, "%s: can't allocimage!\n", argv[0]);

-		exits("no mem");

-	}

+	if(linespace==0)

+		sysfatal("can't allocimage!");

 	bullet=allocimage(display, Rect(0,0,25, 8), screen->chan, 0, DWhite);

 	fillellipse(bullet, Pt(4,4), 3, 3, display->black, ZP);

-	new = www(-1);

-	new->url=&badurl;

-	strcpy(new->title, "See error message above");

-	plrtstr(&new->text, 0, 0, font, "See error message above", 0, 0);

-	new->alldone=1;

 	mkpanels();

 	unlockdisplay(display);

@@ -344,7 +315,8 @@

 	eresized(0);

 	lockdisplay(display);

-	geturl(url, GET, 0, 1, 0);

+	if(url && url[0])

+		geturl(url, GET, 0, 1, 0);

 	if(logfile==-1) message("Can't open log file");

 	mouse.buttons=0;

@@ -486,10 +458,9 @@

 void *emalloc(int n){

 	void *v;

 	v=malloc(n);

-	if(v==0){

-		fprint(2, "out of space\n");

-		exits("no mem");

-	}

+	if(v==0)

+		sysfatal("out of memory");

+	setmalloctag(v, getcallerpc(&n));

 	return v;

 }

 void *emallocz(int n, int z){

@@ -497,6 +468,7 @@

 	v = emalloc(n);

 	if(z)

 		memset(v, 0, n);

+	setmalloctag(v, getcallerpc(&n));

 	return v;

 }

@@ -546,6 +518,10 @@

 	if(defdisplay) pldraw(cururl, screen);

 	plinittextview(text, PACKE|EXPAND, Pt(0, 0), current->text, dolink);

 	scrollto(tag);

+	if((i = open("/dev/label", OWRITE)) >= 0){

+		fprint(i, "%s %s", mothra, current->url->fullname);

+		close(i);

+	}

 	donecurs();

 }

 char *arg(char *s){

@@ -927,9 +903,7 @@

 }

 void selurl(char *urlname){

 	static Url url;

-	seturl(&url, urlname, current?

-		current->url->fullname :

-		defurl.fullname);

+	seturl(&url, urlname, current ? current->url->fullname : "");

 	selection=&url;

 	message("selected: %s", urlstr(selection));

 }

@@ -947,8 +921,7 @@

 	return v;

 }

 void freeurl(Url *u){

-	if(u!=&defurl && u!=&badurl)

-		free(u);

+	free(u);

 }

 /*

@@ -974,7 +947,6 @@

 	for(;;){

 		if((fd=urlopen(selection, method, body)) < 0){

 			message("%r");

-			setcurrent(-1, 0);

 			break;

 		}

 		message("getting %s", selection->fullname);

@@ -1205,10 +1177,8 @@

 		geturl(name, GET, 0, 1, 0);

 		break;

 	case 6:

-		if(confirm(3)){

-			draw(screen, screen->r, display->white, 0, ZP);

+		if(confirm(3))

 			exits(0);

-		}

 		break;

 	}

 }

-- 

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