Golang fileutil.IsEOF函數代碼示例

本文整理匯總了Golang中camlistore/org/third_party/github.com/cznic/fileutil.IsEOF函數的典型用法代碼示例。如果您正苦於以下問題：Golang IsEOF函數的具體用法？Golang IsEOF怎麽用？Golang IsEOF使用的例子？那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。

在下文中一共展示了IsEOF函數的15個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Golang代碼示例。

示例1: WriteAt

func (f *bitFiler) WriteAt(b []byte, off int64) (n int, err error) {
	off0 := off
	pgI := off >> bfBits
	pgO := int(off & bfMask)
	n = len(b)
	rem := n
	var nc int
	for rem != 0 {
		pg := f.m[pgI]
		if pg == nil {
			pg = &bitPage{}
			if f.parent != nil {
				_, err = f.parent.ReadAt(pg.data[:], off&^bfMask)
				if err != nil && !fileutil.IsEOF(err) {
					return
				}

				err = nil
			}
			f.m[pgI] = pg
		}
		nc = copy(pg.data[pgO:], b)
		pgI++
		pg.dirty = true
		for i := pgO; i < pgO+nc; i++ {
			pg.flags[i>>3] |= bitmask[i&7]
		}
		pgO = 0
		rem -= nc
		b = b[nc:]
		off += int64(nc)
	}
	f.size = mathutil.MaxInt64(f.size, off0+int64(n))
	return
}

開發者ID:newobject，項目名稱:camlistore，代碼行數:35，代碼來源:xact.go

示例2: ReadAt

func (f *bitFiler) ReadAt(b []byte, off int64) (n int, err error) {
	avail := f.size - off
	pgI := off >> bfBits
	pgO := int(off & bfMask)
	rem := len(b)
	if int64(rem) >= avail {
		rem = int(avail)
		err = io.EOF
	}
	for rem != 0 && avail > 0 {
		pg := f.m[pgI]
		if pg == nil {
			pg = &bitPage{}
			if f.parent != nil {
				_, err = f.parent.ReadAt(pg.data[:], off&^bfMask)
				if err != nil && !fileutil.IsEOF(err) {
					return
				}

				err = nil
			}
			f.m[pgI] = pg
		}
		nc := copy(b[:mathutil.Min(rem, bfSize)], pg.data[pgO:])
		pgI++
		pgO = 0
		rem -= nc
		n += nc
		b = b[nc:]
		off += int64(nc)
	}
	return
}

開發者ID:newobject，項目名稱:camlistore，代碼行數:33，代碼來源:xact.go

示例3: WriteTo

// WriteTo is a helper to copy/persist File's content to w.  If w is also
// an io.WriterAt then WriteTo may attempt to _not_ write any big, for some
// value of big, runs of zeros, i.e. it will attempt to punch holes, where
// possible, in `w` if that happens to be a freshly created or to zero length
// truncated OS file.  'n' reports the number of bytes written to 'w'.
func (f *File) WriteTo(w io.Writer) (n int64, err error) {
	var (
		b      [pgSize]byte
		wn, rn int
		off    int64
		rerr   error
	)

	if wa, ok := w.(io.WriterAt); ok {
		fsize, err := f.Size()
		if err != nil {
			return n, err
		}

		lastPgI := fsize >> pgBits
		for pgI := int64(0); pgI <= lastPgI; pgI++ {
			sz := pgSize
			if pgI == lastPgI {
				sz = int(fsize & pgMask)
			}
			v, err := (*Array)(f).Get(pgI)
			if err != nil {
				return n, err
			}

			pg, _ := v.([]byte)
			if len(pg) != 0 {
				wn, err = wa.WriteAt(pg[:sz], off)
				if err != nil {
					return n, err
				}

				n += int64(wn)
				off += int64(sz)
				if wn != sz {
					return n, io.ErrShortWrite
				}
			}
		}
		return n, err
	}

	var werr error
	for rerr == nil {
		if rn, rerr = f.ReadAt(b[:], off); rn != 0 {
			off += int64(rn)
			if wn, werr = w.Write(b[:rn]); werr != nil {
				return n, werr
			}

			n += int64(wn)
		}
	}
	if !fileutil.IsEOF(rerr) {
		err = rerr
	}
	return
}

開發者ID:kristofer，項目名稱:camlistore，代碼行數:63，代碼來源:file.go

示例4: Dump

// Dump outputs a human readable dump of t to w. It is usable iff t keys and
// values are encoded scalars (see EncodeScalars). Intended use is only for
// examples or debugging. Some type information is lost in the rendering, for
// example a float value '17.' and an integer value '17' may both output as
// '17'.
func (t *BTree) Dump(w io.Writer) (err error) {
	enum, err := t.seekFirst()
	if err != nil {
		return
	}

	for {
		bkey, bval, err := enum.current()
		if err != nil {
			return err
		}

		key, err := DecodeScalars(bkey)
		if err != nil {
			return err
		}

		val, err := DecodeScalars(bval)
		if err != nil {
			return err
		}

		kk := []string{}
		if key == nil {
			kk = []string{"null"}
		}
		for _, v := range key {
			kk = append(kk, elem(v))
		}
		vv := []string{}
		if val == nil {
			vv = []string{"null"}
		}
		for _, v := range val {
			vv = append(vv, elem(v))
		}
		skey := strings.Join(kk, ", ")
		sval := strings.Join(vv, ", ")
		if len(vv) > 1 {
			sval = fmt.Sprintf("[]interface{%s}", sval)
		}
		if _, err = fmt.Fprintf(w, "%s → %s\n", skey, sval); err != nil {
			return err
		}

		err = enum.next()
		if err != nil {
			if fileutil.IsEOF(err) {
				err = nil
				break
			}

			return err
		}
	}
	return
}

開發者ID:rakyll，項目名稱:camlistore，代碼行數:62，代碼來源:btree.go

示例5: WriteTo

// WriteTo is a helper to copy/persist MemFiler's content to w.  If w is also
// an io.WriterAt then WriteTo may attempt to _not_ write any big, for some
// value of big, runs of zeros, i.e. it will attempt to punch holes, where
// possible, in `w` if that happens to be a freshly created or to zero length
// truncated OS file.  'n' reports the number of bytes written to 'w'.
func (f *MemFiler) WriteTo(w io.Writer) (n int64, err error) {
	var (
		b      [pgSize]byte
		wn, rn int
		off    int64
		rerr   error
	)

	if wa, ok := w.(io.WriterAt); ok {
		lastPgI := f.size >> pgBits
		for pgI := int64(0); pgI <= lastPgI; pgI++ {
			sz := pgSize
			if pgI == lastPgI {
				sz = int(f.size & pgMask)
			}
			pg := f.m[pgI]
			if pg != nil {
				wn, err = wa.WriteAt(pg[:sz], off)
				if err != nil {
					return
				}

				n += int64(wn)
				off += int64(sz)
				if wn != sz {
					return n, io.ErrShortWrite
				}
			}
		}
		return
	}

	var werr error
	for rerr == nil {
		if rn, rerr = f.ReadAt(b[:], off); rn != 0 {
			off += int64(rn)
			if wn, werr = w.Write(b[:rn]); werr != nil {
				return n, werr
			}

			n += int64(wn)
		}
	}
	if !fileutil.IsEOF(rerr) {
		err = rerr
	}
	return
}

開發者ID:newobject，項目名稱:camlistore，代碼行數:53，代碼來源:memfiler.go

示例6: ReadFrom

// ReadFrom is a helper to populate File's content from r.  'n' reports the
// number of bytes read from 'r'.
func (f *File) ReadFrom(r io.Reader) (n int64, err error) {
	if err = f.Truncate(0); err != nil {
		return
	}

	var (
		b   [pgSize]byte
		rn  int
		off int64
	)

	var rerr error
	for rerr == nil {
		if rn, rerr = r.Read(b[:]); rn != 0 {
			f.WriteAt(b[:rn], off)
			off += int64(rn)
			n += int64(rn)
		}
	}
	if !fileutil.IsEOF(rerr) {
		err = rerr
	}
	return
}

開發者ID:kristofer，項目名稱:camlistore，代碼行數:26，代碼來源:file.go

示例7: TestbTreePrev

func TestbTreePrev(t *testing.T) {
	N := int64(*testN)

	tree := NewBTree(nil)
	enum, _, err := tree.seek(enc8(0))
	if err != nil {
		t.Fatal(err)
	}

	if _, _, err = enum.current(); !fileutil.IsEOF(err) {
		t.Fatal(err)
	}

	if err = enum.next(); !fileutil.IsEOF(err) {
		t.Fatal(err)
	}

	if err = enum.prev(); !fileutil.IsEOF(err) {
		t.Fatal(err)
	}

	// Fill
	for i := int64(1); i <= N; i++ {
		tree.Set(enc8(10*i), enc8(10*i+1))
	}

	var eq bool

	enum, eq, err = tree.seek(enc8(0))
	if err != nil {
		t.Fatal(err)
	}

	if eq {
		t.Fatal(eq)
	}

	// index: 0
	if _, _, err = enum.current(); err != nil {
		t.Fatal(err)
	}

	if err = enum.prev(); !fileutil.IsEOF(err) {
		t.Fatal(err)
	}

	enum, eq, err = tree.seek(enc8(N * 10))
	if err != nil {
		t.Fatal(err)
	}

	if !eq {
		t.Fatal(eq)
	}

	// index: N-1
	if _, _, err = enum.current(); err != nil {
		t.Fatal(err)
	}

	if err = enum.prev(); N > 1 && err != nil {
		t.Fatal(err)
	}

	enum, eq, err = tree.seek(enc8(N*10 + 1))
	if err != nil {
		t.Fatal(err)
	}

	if eq {
		t.Fatal(eq)
	}

	// index: N
	if _, _, err = enum.current(); !fileutil.IsEOF(err) {
		t.Fatal(err)
	}

	if err = enum.prev(); err != nil {
		t.Fatal(err)
	}

	enum, _, err = tree.seek(enc8(N * 10))
	if err != nil {
		t.Fatal(err)
	}

	for i := N; i >= 1; i-- {
		expKey, expValue := enc8(10*i), enc8(10*i+1)
		k, v, err := enum.current()
		if err != nil {
			t.Fatal(err)
		}

		if !bytes.Equal(k, expKey) {
			t.Fatalf("%d k|% x| expK|% x| %s\n", i, k, expKey, tree.root.String(tree.store))
		}

		if !bytes.Equal(v, expValue) {
			t.Fatal(i)
//.........這裏部分代碼省略.........

開發者ID:camarox53，項目名稱:coreos-baremetal，代碼行數:101，代碼來源:btree_test.go

示例8: TestBTreeSeekPrev

func TestBTreeSeekPrev(t *testing.T) {
	// seeking within 3 keys: 10, 20, 30
	table := []struct {
		k    int
		hit  bool
		keys []int
	}{
		{5, false, []int{10}},
		{10, true, []int{10}},
		{15, false, []int{20, 10}},
		{20, true, []int{20, 10}},
		{25, false, []int{30, 20, 10}},
		{30, true, []int{30, 20, 10}},
		{35, false, []int{}},
	}

	for i, test := range table {
		down := test.keys
		db := NewBTree(nil)
		if err := db.Set(n2b(10), n2b(100)); err != nil {
			t.Fatal(i, err)
		}

		if err := db.Set(n2b(20), n2b(200)); err != nil {
			t.Fatal(i, err)
		}

		if err := db.Set(n2b(30), n2b(300)); err != nil {
			t.Fatal(i, err)
		}

		for brokenSerial := 0; brokenSerial < 16; brokenSerial++ {
			en, hit, err := db.Seek(n2b(test.k))
			if err != nil {
				t.Fatal(err)
			}

			if g, e := hit, test.hit; g != e {
				t.Fatal(i, g, e)
			}

			j := 0
			for {
				if brokenSerial&(1<<uint(j)) != 0 {
					if err := db.Set(n2b(20), n2b(200)); err != nil {
						t.Fatal(i, err)
					}
				}

				k, v, err := en.Prev()
				if err != nil {
					if !fileutil.IsEOF(err) {
						t.Fatal(i, err)
					}

					break
				}

				if g, e := len(k), 8; g != e {
					t.Fatal(i, g, e)
				}

				if j >= len(down) {
					t.Fatal(i, j, brokenSerial)
				}

				if g, e := b2n(k), down[j]; g != e {
					t.Fatal(i, j, brokenSerial, g, e)
				}

				if g, e := len(v), 8; g != e {
					t.Fatal(i, g, e)
				}

				if g, e := b2n(v), 10*down[j]; g != e {
					t.Fatal(i, g, e)
				}

				j++

			}

			if g, e := j, len(down); g != e {
				t.Fatal(i, j, g, e)
			}
		}

	}
}

開發者ID:camarox53，項目名稱:coreos-baremetal，代碼行數:89，代碼來源:btree_test.go

示例9: TestseekLast

func TestseekLast(t *testing.T) {
	bt := NewBTree(nil)

	enum, err := bt.seekFirst()
	if !fileutil.IsEOF(err) {
		t.Fatal(err)
	}

	bt.Set([]byte("a"), []byte("b"))
	enum, err = bt.seekFirst()
	if err != nil {
		t.Fatal(err)
	}

	err = enum.prev()
	if !fileutil.IsEOF(err) {
		t.Fatal(err)
	}

	err = enum.next()
	if !fileutil.IsEOF(err) {
		t.Fatal(err)
	}

	k, v, err := enum.current()
	if err != nil {
		t.Fatal(err)
	}

	if string(k) != "a" || string(v) != "b" {
		t.Fatal(k, v)
	}

	bt.Set([]byte("c"), []byte("d"))
	enum, err = bt.seekLast()
	if err != nil {
		t.Fatal(err)
	}

	err = enum.next()
	if !fileutil.IsEOF(err) {
		t.Fatal(err)
	}

	k, v, err = enum.current()
	if err != nil {
		t.Fatal(err)
	}

	if string(k) != "c" || string(v) != "d" {
		t.Fatal(k, v)
	}

	err = enum.prev()
	if err != nil {
		t.Fatal(err)
	}

	k, v, err = enum.current()
	if err != nil {
		t.Fatal(err)
	}

	if string(k) != "a" || string(v) != "b" {
		t.Fatal(k, v)
	}
}

開發者ID:camarox53，項目名稱:coreos-baremetal，代碼行數:67，代碼來源:btree_test.go

示例10: TestSeekNext

func TestSeekNext(t *testing.T) {
	// seeking within 3 keys: 10, 20, 30
	table := []struct {
		k    int
		hit  bool
		keys []int
	}{
		{5, false, []int{10, 20, 30}},
		{10, true, []int{10, 20, 30}},
		{15, false, []int{20, 30}},
		{20, true, []int{20, 30}},
		{25, false, []int{30}},
		{30, true, []int{30}},
		{35, false, []int{}},
	}

	for i, test := range table {
		up := test.keys
		db, err := CreateMem(&Options{noClone: true})
		if err != nil {
			t.Fatal(i, err)
		}

		if err := db.Set(n2b(10), n2b(100)); err != nil {
			t.Fatal(i, err)
		}

		if err := db.Set(n2b(20), n2b(200)); err != nil {
			t.Fatal(i, err)
		}

		if err := db.Set(n2b(30), n2b(300)); err != nil {
			t.Fatal(i, err)
		}

		for brokenSerial := 0; brokenSerial < 16; brokenSerial++ {
			en, hit, err := db.Seek(n2b(test.k))
			if err != nil {
				t.Fatal(err)
			}

			if g, e := hit, test.hit; g != e {
				t.Fatal(i, g, e)
			}

			j := 0
			for {
				if brokenSerial&(1<<uint(j)) != 0 {
					if err := db.Set(n2b(20), n2b(200)); err != nil {
						t.Fatal(i, err)
					}
				}

				k, v, err := en.Next()
				if err != nil {
					if !fileutil.IsEOF(err) {
						t.Fatal(i, err)
					}

					break
				}

				if g, e := len(k), 8; g != e {
					t.Fatal(i, g, e)
				}

				if j >= len(up) {
					t.Fatal(i, j, brokenSerial)
				}

				if g, e := b2n(k), up[j]; g != e {
					t.Fatal(i, j, brokenSerial, g, e)
				}

				if g, e := len(v), 8; g != e {
					t.Fatal(i, g, e)
				}

				if g, e := b2n(v), 10*up[j]; g != e {
					t.Fatal(i, g, e)
				}

				j++

			}

			if g, e := j, len(up); g != e {
				t.Fatal(i, j, g, e)
			}
		}

	}
}

開發者ID:rn2dy，項目名稱:camlistore，代碼行數:93，代碼來源:all_test.go

示例11: TestRollbackFiler3

func TestRollbackFiler3(t *testing.T) {
	var r *RollbackFiler
	f := NewMemFiler()

	checkpoint := func(sz int64) (err error) {
		return f.Truncate(sz)
	}

	r, err := NewRollbackFiler(f, checkpoint, f)
	if err != nil {
		t.Fatal(err)
	}

	n, err := r.ReadAt([]byte{0}, 0)
	if n != 0 || !fileutil.IsEOF(err) {
		t.Fatal(n, err)
	}

	n, err = r.ReadAt([]byte{0}, 1e6)
	if n != 0 || !fileutil.IsEOF(err) {
		t.Fatal(n, err)
	}

	if err = r.BeginUpdate(); err != nil { // BeginUpdate: 0 -> 1
		t.Fatal(err)
	}

	rng := rand.New(rand.NewSource(42))

	buf := rndBytes(rng, 100)
	if n, err := r.WriteAt(buf, 1e6); n != 100 || err != nil {
		t.Fatal(err)
	}

	buf = make([]byte, 100)
	if n, err := r.ReadAt(buf, 1e6-200); n != 100 || err != nil {
		t.Fatal(err)
	}

	for i, v := range buf {
		if v != 0 {
			t.Fatal(i, v)
		}
	}

	if err := r.Truncate(1e5); err != nil {
		t.Fatal(err)
	}

	if err = r.BeginUpdate(); err != nil { // BeginUpdate: 1 -> 2
		t.Fatal(err)
	}

	if n, err := r.ReadAt(buf, 1e6); n != 0 || err == nil {
		t.Fatal(n, err)
	}

	if err := r.Truncate(2e6); err != nil {
		t.Fatal(err)
	}

	if err = r.BeginUpdate(); err != nil { // BeginUpdate: 2 -> 3
		t.Fatal(err)
	}

	if n, err := r.ReadAt(buf, 1e6); n == 0 || err != nil {
		t.Fatal(n, err)
	}

	for i, v := range buf {
		if v != 0 {
			t.Fatal(i, v)
		}
	}
}

開發者ID:newobject，項目名稱:camlistore，代碼行數:75，代碼來源:xact_test.go

示例12: recoverDb

func (a *ACIDFiler0) recoverDb(db Filer) (err error) {
	fi, err := a.wal.Stat()
	if err != nil {
		return &ErrILSEQ{Type: ErrInvalidWAL, Name: a.wal.Name(), More: err}
	}

	if sz := fi.Size(); sz%16 != 0 {
		return &ErrILSEQ{Type: ErrFileSize, Name: a.wal.Name(), Arg: sz}
	}

	f := bufio.NewReader(a.wal)
	items, err := a.readPacket(f)
	if err != nil {
		return
	}

	if len(items) != 3 || items[0] != int64(wpt00Header) || items[1] != int64(walTypeACIDFiler0) {
		return &ErrILSEQ{Type: ErrInvalidWAL, Name: a.wal.Name(), More: fmt.Sprintf("invalid packet items %#v", items)}
	}

	tr := NewBTree(nil)

	for {
		items, err = a.readPacket(f)
		if err != nil {
			return
		}

		if len(items) < 2 {
			return &ErrILSEQ{Type: ErrInvalidWAL, Name: a.wal.Name(), More: fmt.Sprintf("too few packet items %#v", items)}
		}

		switch items[0] {
		case int64(wpt00WriteData):
			if len(items) != 3 {
				return &ErrILSEQ{Type: ErrInvalidWAL, Name: a.wal.Name(), More: fmt.Sprintf("invalid data packet items %#v", items)}
			}

			b, off := items[1].([]byte), items[2].(int64)
			var key [8]byte
			binary.BigEndian.PutUint64(key[:], uint64(off))
			if err = tr.Set(key[:], b); err != nil {
				return
			}
		case int64(wpt00Checkpoint):
			var b1 [1]byte
			if n, err := f.Read(b1[:]); n != 0 || err == nil {
				return &ErrILSEQ{Type: ErrInvalidWAL, Name: a.wal.Name(), More: fmt.Sprintf("checkpoint n %d, err %v", n, err)}
			}

			if len(items) != 2 {
				return &ErrILSEQ{Type: ErrInvalidWAL, Name: a.wal.Name(), More: fmt.Sprintf("checkpoint packet invalid items %#v", items)}
			}

			sz := items[1].(int64)
			enum, err := tr.seekFirst()
			if err != nil {
				return err
			}

			for {
				k, v, err := enum.current()
				if err != nil {
					if fileutil.IsEOF(err) {
						break
					}

					return err
				}

				if _, err = db.WriteAt(v, int64(binary.BigEndian.Uint64(k))); err != nil {
					return err
				}

				if err = enum.next(); err != nil {
					if fileutil.IsEOF(err) {
						break
					}

					return err
				}
			}

			if err = db.Truncate(sz); err != nil {
				return err
			}

			if err = db.Sync(); err != nil {
				return err
			}

			// Recovery complete

			if err = a.wal.Truncate(0); err != nil {
				return err
			}

			return a.wal.Sync()
		default:
			return &ErrILSEQ{Type: ErrInvalidWAL, Name: a.wal.Name(), More: fmt.Sprintf("packet tag %v", items[0])}
//.........這裏部分代碼省略.........

開發者ID:rfistman，項目名稱:camlistore，代碼行數:101，代碼來源:2pc.go

示例13: noEof

func noEof(e error) (err error) {
	if !fileutil.IsEOF(e) {
		err = e
	}
	return
}

開發者ID:newobject，項目名稱:camlistore，代碼行數:6，代碼來源:etc.go

示例14: NewACIDFiler

// NewACIDFiler0 returns a  newly created ACIDFiler0 with WAL in wal.
//
// If the WAL is zero sized then a previous clean shutdown of db is taken for
// granted and no recovery procedure is taken.
//
// If the WAL is of non zero size then it is checked for having a
// commited/fully finished transaction not yet been reflected in db. If such
// transaction exists it's committed to db. If the recovery process finishes
// successfully, the WAL is truncated to zero size and fsync'ed prior to return
// from NewACIDFiler0.
func NewACIDFiler(db Filer, wal *os.File) (r *ACIDFiler0, err error) {
	fi, err := wal.Stat()
	if err != nil {
		return
	}

	r = &ACIDFiler0{wal: wal}

	if fi.Size() != 0 {
		if err = r.recoverDb(db); err != nil {
			return
		}
	}

	acidWriter := (*acidWriter0)(r)

	if r.RollbackFiler, err = NewRollbackFiler(
		db,
		func(sz int64) (err error) {
			// Checkpoint
			if err = acidWriter.writePacket([]interface{}{wpt00Checkpoint, sz}); err != nil {
				return
			}

			if err = r.bwal.Flush(); err != nil {
				return
			}

			r.bwal = nil

			if err = r.wal.Sync(); err != nil {
				return
			}

			wfi, err := r.wal.Stat()
			switch err != nil {
			case true:
				// unexpected, but ignored
			case false:
				r.peakWal = mathutil.MaxInt64(wfi.Size(), r.peakWal)
			}

			// Phase 1 commit complete

			enum, err := r.data.seekFirst()
			if err != nil {
				return
			}

			for {
				k, v, err := enum.current()
				if err != nil {
					if fileutil.IsEOF(err) {
						break
					}

					return err
				}

				if _, err := db.WriteAt(v, int64(binary.BigEndian.Uint64(k))); err != nil {
					return err
				}

				if err = enum.next(); err != nil {
					if fileutil.IsEOF(err) {
						break
					}

					return err
				}
			}

			if err = db.Truncate(sz); err != nil {
				return
			}

			if err = db.Sync(); err != nil {
				return
			}

			// Phase 2 commit complete

			if !r.testHook {
				if err = r.wal.Truncate(0); err != nil {
					return
				}

				if _, err = r.wal.Seek(0, 0); err != nil {
					return
				}
//.........這裏部分代碼省略.........

開發者ID:rakyll，項目名稱:camlistore，代碼行數:101，代碼來源:2pc.go

示例15: testFilerReadAtWriteAt

func testFilerReadAtWriteAt(t *testing.T, nf newFunc) {
	f := nf()
	t.Log(f.Name())
	defer func() {
		if err := f.Close(); err != nil {
			t.Error(err)
		}
	}()

	if _, ok := f.(*RollbackFiler); ok {
		if err := f.BeginUpdate(); err != nil {
			t.Fatal(err)
		}

		defer func() {
			if err := f.EndUpdate(); err != nil {
				t.Error(err)
			}
		}()
	}

	const (
		N = 1 << 16
		M = 2e2
	)

	s := make([]byte, N)
	e := make([]byte, N)
	rnd := rand.New(rand.NewSource(42))
	for i := range e {
		s[i] = byte(rnd.Intn(256))
	}
	n2 := 0
	for i := 0; i < M; i++ {
		var from, to int
		for {
			from = rnd.Intn(N)
			to = rnd.Intn(N)
			if from != to {
				break
			}
		}
		if from > to {
			from, to = to, from
		}
		for i := range s[from:to] {
			s[from+i] = byte(rnd.Intn(256))
		}
		copy(e[from:to], s[from:to])
		if to > n2 {
			n2 = to
		}
		n, err := f.WriteAt(s[from:to], int64(from))
		if err != nil {
			t.Error(err)
			return
		}

		if g, e := n, to-from; g != e {
			t.Error(g, e)
			return
		}
	}

	fsz, err := f.Size()
	if err != nil {
		t.Error(err)
		return
	}

	if g, e := fsz, int64(n2); g != e {
		t.Error(g, e)
		return
	}

	b := make([]byte, n2)
	for i := 0; i <= M; i++ {
		from := rnd.Intn(n2)
		to := rnd.Intn(n2)
		if from > to {
			from, to = to, from
		}
		if i == M {
			from, to = 0, n2
		}
		n, err := f.ReadAt(b[from:to], int64(from))
		if err != nil && (!fileutil.IsEOF(err) && n != 0) {
			fsz, err = f.Size()
			if err != nil {
				t.Error(err)
				return
			}

			t.Error(fsz, from, to, err)
			return
		}

		if g, e := n, to-from; g != e {
			t.Error(g, e)
			return
//.........這裏部分代碼省略.........

開發者ID:kristofer，項目名稱:camlistore，代碼行數:101，代碼來源:filer_test.go

注：本文中的camlistore/org/third_party/github.com/cznic/fileutil.IsEOF函數示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。