shithub: vexed

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implement edition

	value under the cursor can be modified by entering
	valid hex digits.

--- a/vexed.c

+++ b/vexed.c

@@ -22,6 +22,7 @@

 };

 const char	*filename;

+int modified;

 Buffer buf;

 int blines;

 Mousectl	*mctl;

@@ -95,6 +96,7 @@

 {

 	int i, h, y, ye;

 	Rectangle scrposr;

+	Point p;

 	char b[16] = {0};

 	draw(screen, screen->r, cols[BACK], nil, ZP);

@@ -112,7 +114,9 @@

 	draw(screen, scrposr, cols[BACK], nil, ZP);

 	for(i = 0; i < nlines; i++)

 		drawline(viewr.min.y + i * font->height, i*16);

-	string(screen, Pt(statusr.min.x + Padding, statusr.min.y), cols[HEX], ZP, font, filename);

+	p = string(screen, Pt(statusr.min.x + Padding, statusr.min.y), cols[HEX], ZP, font, filename);

+	if(modified)

+		string(screen, p, cols[HEX], ZP, font, " (modified)");

 	snprint(b, sizeof b, "%d%%", (int)((100.0 * sel) / buf.count + 0.5));

 	y = statusr.max.x - stringwidth(font, b) - Padding;

 	string(screen, Pt(y, statusr.min.y), cols[HEX], ZP, font, b);

@@ -208,9 +212,26 @@

 	flushimage(display, 1);

 }

+int

+hexval(Rune k)

+{

+	int v;

+

+	if(isdigit(k))

+		v = k - '0';

+	else

+		v = 10 + tolower(k) - 'a';

+	return v;

+}

+

 void

 ekeyboard(Rune k)

 {

+	static long lastk = 0;

+	static int lastv;

+	long e;

+

+	e = time(nil);

 	switch(k){

 	case 'q':

 	case Kdel:

@@ -265,7 +286,22 @@

 			redraw();

 		}

 		break;

+	default:

+		if(isxdigit(k)){

+			if(e - lastk < 2 && lastv > 0) {

+				buf.data[sel] = lastv*16 + hexval(k);

+				lastv = -1;

+			}else{

+				lastv = hexval(k);

+				buf.data[sel] = lastv;

+			}

+			modified = 1;

+			redraw();

+		}else{

+			lastv = -1;

+		}

 	}

+	lastk = e;

 }

 void

@@ -299,6 +335,7 @@

 	if(*argv == nil)

 		usage();

 	filename = *argv;

+	modified = 0;

 	if(readfile(&buf, filename) < 0)

 		sysfatal("readfile: %r");

 	blines = buf.count/16;