assorted cleanup and fixes

R=r
DELTA=209  (109 added, 79 deleted, 21 changed)
OCL=20930
CL=20934

src/lib/bufio.go

@@ -210,7 +210,9 @@ func (b *BufRead) ReadLineSlice(delim byte) (line *[]byte, err *os.Error) {
 			return nil, b.err
 		}
 		if b.Buffered() == n {	// no data added; end of file
-			return nil, EndOfFile
+			line := b.buf[b.r:b.w];
+			b.r = b.w;
+			return line, EndOfFile
 		}
 
 		// Search new part of buffer

src/lib/fmt/print.go

@@ -275,7 +275,7 @@ func getFloat64(v reflect.Value) (val float64, ok bool) {
 func getPtr(v reflect.Value) (val uintptr, ok bool) {
 	switch v.Kind() {
 	case reflect.PtrKind:
-		return uintptr(v.(reflect.PtrValue)), true;
+		return uintptr(v.(reflect.PtrValue).Get()), true;
 	}
 	return 0, false;
 }

src/lib/http/url.go

@@ -3,11 +3,13 @@
 // license that can be found in the LICENSE file.
 
 // Parse URLs (actually URIs, but that seems overly pedantic).
+// TODO(rsc): Add tests.
 
 package http
 
 import (
-	"os"
+	"os";
+	"strings"
 )
 
 export var (
@@ -150,13 +152,19 @@ export func ParseURL(rawurl string) (url *URL, err *os.Error) {
 
 	// Maybe path is //authority/path
 	if len(path) > 2 && path[0:2] == "//" {
-		url.authority, path = Split(path[2:len(path)], '/', false)
+		url.authority, path = Split(path[2:len(path)], '/', false);
+	}
+
+	// If there's no @, Split's default is wrong.  Check explicitly.
+	if strings.index(url.authority, "@") < 0 {
+		url.host = url.authority;
+	} else {
+		url.userinfo, url.host = Split(url.authority, '@', true);
 	}
-	url.userinfo, url.host = Split(url.authority, '@', true);
 
 	// What's left is the path.
 	// TODO: Canonicalize (remove . and ..)?
-	if url.path, err = URLUnescape(url.path); err != nil {
+	if url.path, err = URLUnescape(path); err != nil {
 		return nil, err
 	}
 

src/lib/net/net.go

@@ -359,72 +359,20 @@ ra = nil;
 // TCP connections.
 
 export type ConnTCP struct {
-	base ConnBase
+	ConnBase
 }
 
-// New TCP methods
 func (c *ConnTCP) SetNoDelay(nodelay bool) *os.Error {
 	if c == nil {
 		return os.EINVAL
 	}
-	return setsockopt_int((&c.base).FD(), syscall.IPPROTO_TCP, syscall.TCP_NODELAY, boolint(nodelay))
+	return setsockopt_int(c.FD(), syscall.IPPROTO_TCP, syscall.TCP_NODELAY, boolint(nodelay))
-}
-
-// Wrappers
-func (c *ConnTCP) Read(b *[]byte) (n int, err *os.Error) {
-	n, err = (&c.base).Read(b);
-	return n, err
-}
-func (c *ConnTCP) Write(b *[]byte) (n int, err *os.Error) {
-	n, err = (&c.base).Write(b);
-	return n, err
-}
-func (c *ConnTCP) ReadFrom(b *[]byte) (n int, raddr string, err *os.Error) {
-	n, raddr, err = (&c.base).ReadFrom(b);
-	return n, raddr, err
-}
-func (c *ConnTCP) WriteTo(raddr string, b *[]byte) (n int, err *os.Error) {
-	n, err = (&c.base).WriteTo(raddr, b);
-	return n, err
-}
-func (c *ConnTCP) Close() *os.Error {
-	return (&c.base).Close()
-}
-func (c *ConnTCP) SetReadBuffer(bytes int) *os.Error {
-	return (&c.base).SetReadBuffer(bytes)
-}
-func (c *ConnTCP) SetWriteBuffer(bytes int) *os.Error {
-	return (&c.base).SetWriteBuffer(bytes)
-}
-func (c *ConnTCP) SetTimeout(nsec int64) *os.Error {
-	return (&c.base).SetTimeout(nsec)
-}
-func (c *ConnTCP) SetReadTimeout(nsec int64) *os.Error {
-	return (&c.base).SetReadTimeout(nsec)
-}
-func (c *ConnTCP) SetWriteTimeout(nsec int64) *os.Error {
-	return (&c.base).SetWriteTimeout(nsec)
-}
-func (c *ConnTCP) SetLinger(sec int) *os.Error {
-	return (&c.base).SetLinger(sec)
-}
-func (c *ConnTCP) SetReuseAddr(reuseaddr bool) *os.Error {
-	return (&c.base).SetReuseAddr(reuseaddr)
-}
-func (c *ConnTCP) BindToDevice(dev string) *os.Error {
-	return (&c.base).BindToDevice(dev)
-}
-func (c *ConnTCP) SetDontRoute(dontroute bool) *os.Error {
-	return (&c.base).SetDontRoute(dontroute)
-}
-func (c *ConnTCP) SetKeepAlive(keepalive bool) *os.Error {
-	return (&c.base).SetKeepAlive(keepalive)
 }
 
 func NewConnTCP(fd *FD, raddr string) *ConnTCP {
 	c := new(ConnTCP);
-	c.base.fd = fd;
+	c.fd = fd;
-	c.base.raddr = raddr;
+	c.raddr = raddr;
 	c.SetNoDelay(true);
 	return c
 }
@@ -441,7 +389,31 @@ export func DialTCP(net, laddr, raddr string) (c *ConnTCP, err *os.Error) {
 }
 
 
-// TODO: UDP connections
+// UDP connections.
+
+// TODO(rsc): UDP headers mode
+
+export type ConnUDP struct {
+	ConnBase
+}
+
+func NewConnUDP(fd *FD, raddr string) *ConnUDP {
+	c := new(ConnUDP);
+	c.fd = fd;
+	c.raddr = raddr;
+	return c
+}
+
+export func DialUDP(net, laddr, raddr string) (c *ConnUDP, err *os.Error) {
+	if raddr == "" {
+		return nil, MissingAddress
+	}
+	fd, e := InternetSocket(net, laddr, raddr, syscall.SOCK_DGRAM);
+	if e != nil {
+		return nil, e
+	}
+	return NewConnUDP(fd, raddr), nil
+}
 
 
 // TODO: raw IP connections
@@ -468,24 +440,6 @@ export type Conn interface {
 	BindToDevice(dev string) *os.Error;
 }
 
-type NoConn struct { unused int }
-func (c *NoConn) Read(b *[]byte) (n int, err *os.Error) { return -1, os.EINVAL }
-func (c *NoConn) Write(b *[]byte) (n int, err *os.Error) { return -1, os.EINVAL }
-func (c *NoConn) ReadFrom(b *[]byte) (n int, addr string, err *os.Error) { return -1, "", os.EINVAL }
-func (c *NoConn) WriteTo(addr string, b *[]byte) (n int, err *os.Error) { return -1, os.EINVAL }
-func (c *NoConn) Close() *os.Error { return nil }
-func (c *NoConn) SetReadBuffer(bytes int) *os.Error { return os.EINVAL }
-func (c *NoConn) SetWriteBuffer(bytes int) *os.Error { return os.EINVAL }
-func (c *NoConn) SetTimeout(nsec int64) *os.Error { return os.EINVAL }
-func (c *NoConn) SetReadTimeout(nsec int64) *os.Error { return os.EINVAL }
-func (c *NoConn) SetWriteTimeout(nsec int64) *os.Error { return os.EINVAL }
-func (c *NoConn) SetLinger(sec int) *os.Error { return os.EINVAL }
-func (c *NoConn) SetReuseAddr(reuseaddr bool) *os.Error { return os.EINVAL }
-func (c *NoConn) SetDontRoute(dontroute bool) *os.Error { return os.EINVAL }
-func (c *NoConn) SetKeepAlive(keepalive bool) *os.Error { return os.EINVAL }
-func (c *NoConn) BindToDevice(dev string) *os.Error { return os.EINVAL }
-
-var noconn NoConn
 
 // Dial's arguments are the network, local address, and remote address.
 // Examples:
@@ -501,13 +455,13 @@ export func Dial(net, laddr, raddr string) (c Conn, err *os.Error) {
 	case "tcp", "tcp4", "tcp6":
 		c, err := DialTCP(net, laddr, raddr);
 		if err != nil {
-			return &noconn, err
+			return nil, err
 		}
 		return c, nil;
-/*
 	case "udp", "udp4", "upd6":
 		c, err := DialUDP(net, laddr, raddr);
 		return c, err;
+/*
 	case "ether":
 		c, err := DialEther(net, laddr, raddr);
 		return c, err;
@@ -528,14 +482,6 @@ export type Listener interface {
 	Close() *os.Error;
 }
 
-type NoListener struct { unused int }
-func (l *NoListener) Accept() (c Conn, raddr string, err *os.Error) {
-	return &noconn, "", os.EINVAL
-}
-func (l *NoListener) Close() *os.Error { return os.EINVAL }
-
-var nolistener NoListener
-
 export type ListenerTCP struct {
 	fd *FD;
 	laddr string
@@ -576,7 +522,7 @@ func (l *ListenerTCP) AcceptTCP() (c *ConnTCP, raddr string, err *os.Error) {
 func (l *ListenerTCP) Accept() (c Conn, raddr string, err *os.Error) {
 	c1, r1, e1 := l.AcceptTCP();
 	if e1 != nil {
-		return &noconn, "", e1
+		return nil, "", e1
 	}
 	return c1, r1, nil
 }
@@ -593,7 +539,7 @@ export func Listen(net, laddr string) (l Listener, err *os.Error) {
 	case "tcp", "tcp4", "tcp6":
 		l, err := ListenTCP(net, laddr);
 		if err != nil {
-			return &nolistener, err
+			return nil, err
 		}
 		return l, nil
 /*

src/lib/reflect/all_test.go

@@ -294,3 +294,36 @@ export func TestInterfaceGet(t *testing.T) {
 	v3 := reflect.NewValue(i2);
 	assert(v3.Type().String(), "float");
 }
+
+export func TestCopyArray(t *testing.T) {
+	a := &[]int{ 1, 2, 3, 4, 10, 9, 8, 7 };
+	b := &[]int{ 11, 22, 33, 44, 1010, 99, 88, 77, 66, 55, 44 };
+	c := &[]int{ 11, 22, 33, 44, 1010, 99, 88, 77, 66, 55, 44 };
+	va := NewValue(a);
+	vb := NewValue(b);
+	for i := 0; i < len(b); i++ {
+		if b[i] != c[i] {
+			t.Fatalf("b != c before test");
+		}
+	}
+	for tocopy := 5; tocopy <= 6; tocopy++ {
+		CopyArray(vb.(PtrValue).Sub(), va.(PtrValue).Sub(), tocopy);
+		for i := 0; i < tocopy; i++ {
+			if a[i] != b[i] {
+				t.Errorf("tocopy=%d a[%d]=%d, b[%d]=%d",
+					tocopy, i, a[i], i, b[i]);
+			}
+		}
+		for i := tocopy; i < len(b); i++ {
+			if b[i] != c[i] {
+				if i < len(a) {
+					t.Errorf("tocopy=%d a[%d]=%d, b[%d]=%d, c[%d]=%d",
+						tocopy, i, a[i], i, b[i], i, c[i]);
+				} else {
+					t.Errorf("tocopy=%d b[%d]=%d, c[%d]=%d",
+						tocopy, i, b[i], i, c[i]);
+				}
+			}
+		}
+	}
+}

src/lib/reflect/value.go

@@ -14,6 +14,10 @@ import (
 
 type Addr unsafe.pointer	// TODO: where are ptrint/intptr etc?
 
+func EqualType(a, b Type) bool {
+	return a.String() == b.String()
+}
+
 export type Value interface {
 	Kind()	int;
 	Type()	Type;
@@ -490,11 +494,12 @@ func (v *PtrValueStruct) Sub() Value {
 	return NewValueAddr(v.typ.(PtrType).Sub(), v.Get());
 }
 
-func (v *PtrValueStruct) SetSub(subv Value)  {
+func (v *PtrValueStruct) SetSub(subv Value) {
-	a := v.typ.(PtrType).Sub().String();
+	a := v.typ.(PtrType).Sub();
-	b := subv.Type().String();
+	b := subv.Type();
-	if a != b {
+	if !EqualType(a, b) {
-		panicln("reflect: incompatible types in PtrValue.SetSub:", a, b);
+		panicln("reflect: incompatible types in PtrValue.SetSub:",
+			a.String(), b.String());
 	}
 	*v.addr.(*Addr) = subv.Addr();
 }
@@ -806,6 +811,38 @@ export func NewOpenArrayValue(typ ArrayType, len, cap int) ArrayValue {
 	return NewValueAddr(typ, Addr(array));
 }
 
+export func CopyArray(dst ArrayValue, src ArrayValue, n int) {
+	if n == 0 {
+		return
+	}
+	dt := dst.Type().(ArrayType).Elem();
+	st := src.Type().(ArrayType).Elem();
+	if !EqualType(dt, st) {
+		panicln("reflect: incompatible types in CopyArray:",
+			dt.String(), st.String());
+	}
+	if n < 0 || n > dst.Len() || n > src.Len() {
+		panicln("reflect: CopyArray: invalid count", n);
+	}
+	dstp := uintptr(dst.Elem(0).Addr());
+	srcp := uintptr(src.Elem(0).Addr());
+	end := uintptr(n)*uintptr(dt.Size());
+	if dst.Type().Size() % 8 == 0 {
+		for i := uintptr(0); i < end; i += 8{
+			di := Addr(dstp + i);
+			si := Addr(srcp + i);
+			*di.(*uint64) = *si.(*uint64);
+		}
+	} else {
+		for i := uintptr(0); i < end; i++ {
+			di := Addr(dstp + i);
+			si := Addr(srcp + i);
+			*di.(*byte) = *si.(*byte);
+		}
+	}
+}
+
+
 export func NewValue(e interface {}) Value {
 	value, typestring  := sys.reflect(e);
 	p, ok := typecache[typestring];

src/lib/strconv/quote.go

@@ -36,6 +36,9 @@ export func Quote(s string) string {
 		case s[i] == '\v':
 			t += `\v`;
 
+		case s[i] < utf8.RuneSelf:
+			t += `\x` + string(ldigits[s[i]>>4]) + string(ldigits[s[i]&0xF]);
+
 		case utf8.FullRuneInString(s, i):
 			r, size := utf8.DecodeRuneInString(s, i);
 			if r == utf8.RuneError && size == 1 {

src/lib/strconv/quote_test.go

@@ -20,6 +20,7 @@ var quotetests = []QuoteTest {
 	QuoteTest{ "abc\xffdef", `"abc\xffdef"` },
 	QuoteTest{ "\u263a", `"\u263a"` },
 	QuoteTest{ "\U0010ffff", `"\U0010ffff"` },
+	QuoteTest{ "\x04", `"\x04"` },
 }
 
 export func TestQuote(t *testing.T) {