shithub: pplay

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full monty pcm editing, sans undo

- fix insert/pipefrom
- just count samples all over again when there are changes to avoid more bugs
- setrange: constrain dot.pos

--- a/cmd.c

+++ b/cmd.c

@@ -65,6 +65,16 @@

 }

 static void

+recalcsize(void)

+{

+	Chunk *c;

+

+	totalsz = 0;

+	for(c=norris.right; c!=&norris; c=c->right)

+		totalsz += c->bufsz;

+}

+

+static void

 linkchunk(Chunk *left, Chunk *c)

 {

 	c->left->right = left->right;

@@ -117,6 +127,8 @@

 {

 	dot.from.pos = from;

 	dot.to.pos = to;

+	if(dot.pos < from || dot.pos >= to)

+		dot.pos = from;

 }

 int

@@ -290,26 +302,6 @@

 }

 static int

-replace(char *, Chunk *c)

-{

-	Chunk *l, *dotc;

-

-	if(c == nil && (c = clonechunk()) == nil){

-		werrstr("replace: no buffer");

-		return -1;

-	}

-	dotc = p2c(dot.pos, nil);

-	l = dotc->left;

-	totalsz -= dotc->bufsz;

-	unlinkchunk(dotc);

-	freechunk(dotc);

-	linkchunk(l, c);

-	setrange(dot.from.pos, dot.from.pos + c->bufsz);

-	totalsz += c->bufsz;

-	return 1;

-}

-

-static int

 insert(char *, Chunk *c)

 {

 	usize p;

@@ -322,20 +314,12 @@

 	left = p2c(dot.pos, &p);

 	splitright(left, p);

 	linkchunk(left, c);

+	recalcsize();

 	setrange(dot.pos, dot.pos + c->bufsz);

-	totalsz += c->bufsz;

 	return 1;

 }

 static int

-paste(char *s, Chunk *c)

-{

-	if(dot.from.pos == 0 && dot.to.pos == totalsz)

-		return insert(s, c);

-	return replace(s, c);

-}

-

-static int

 copy(char *)

 {

 	Chunk *c;

@@ -351,12 +335,40 @@

 	Chunk *c;

 	c = splitdot();

-	totalsz -= c->bufsz;

+	recalcsize();

 	holdchunk(c, 1);

 	return 1;

 }

 static int

+replace(char *, Chunk *c)

+{

+	Chunk *left, *right;

+

+	if(c == nil && (c = clonechunk()) == nil){

+		werrstr("replace: no buffer");

+		return -1;

+	}

+	right = splitdot();

+	left = right->left;

+	unlinkchunk(right);

+	freechunk(right);

+	right = left->right;

+	linkchunk(left, c);

+	recalcsize();

+	setrange(dot.from.pos, right != &norris ? c2p(right) : totalsz);

+	return 1;

+}

+

+static int

+paste(char *s, Chunk *c)

+{

+	if(dot.from.pos == 0 && dot.to.pos == totalsz)

+		return insert(s, c);

+	return replace(s, c);

+}

+

+static int

 crop(char *)

 {

 	usize Δ;

@@ -373,7 +385,6 @@

 	}

 	dot.from.pos -= Δ;

 	dot.to.pos -= Δ;

-	totalsz -= Δ;

 	if(dot.from.pos > 0){

 		Δ = c->bufsz - dot.from.pos;

 		memmove(c->buf, c->buf + dot.from.pos, Δ);

@@ -380,7 +391,6 @@

 		erealloc(c->buf, Δ, c->bufsz);

 		c->bufsz = Δ;

 		dot.to.pos -= dot.from.pos;

-		totalsz -= dot.from.pos;

 		dot.from.pos = 0;

 	}

 	for(Δ=0; c!=&norris; Δ+=c->bufsz, c=c->right)

@@ -387,16 +397,15 @@

 		if(Δ + c->bufsz >= dot.to.pos)

 			break;

 	if(dot.to.pos > 0){

-		totalsz -= c->bufsz - dot.to.pos;

 		erealloc(c->buf, dot.to.pos, c->bufsz);

 		c->bufsz = dot.to.pos;

 	}

 	for(c=c->right; c!=&norris; c=d){

 		d = c->right;

-		totalsz -= c->bufsz;

 		unlinkchunk(c);

 		freechunk(c);

 	}

+	recalcsize();

 	dot.pos = 0;

 	dot.to.pos = totalsz;

 	return 1;

@@ -439,7 +448,6 @@

 	}

 	c->buf = erealloc(c->buf, off, c->bufsz);

 	c->bufsz = off;

-	totalsz += m;

 	return rc;

 }

@@ -511,7 +519,7 @@

 		paste(nil, c);

 	}

 	close(epfd[0]);

-	return 0;

+	return 1;

 }

 static int

@@ -596,6 +604,7 @@

 	if((c = readintochunks(fd)) == nil)

 		sysfatal("loadin: %r");

 	linkchunk(&norris, c);

+	recalcsize();

 	setrange(0, totalsz);

 	return 0;

 }