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98 lines
1.5 KiB
98 lines
1.5 KiB
// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
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// All rights reserved.
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//
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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package leveldb
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import (
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"fmt"
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"sort"
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"github.com/syndtr/goleveldb/leveldb/storage"
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)
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func shorten(str string) string {
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if len(str) <= 8 {
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return str
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}
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return str[:3] + ".." + str[len(str)-3:]
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}
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var bunits = [...]string{"", "Ki", "Mi", "Gi", "Ti"}
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func shortenb(bytes int) string {
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i := 0
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for ; bytes > 1024 && i < 4; i++ {
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bytes /= 1024
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}
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return fmt.Sprintf("%d%sB", bytes, bunits[i])
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}
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func sshortenb(bytes int) string {
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if bytes == 0 {
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return "~"
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}
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sign := "+"
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if bytes < 0 {
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sign = "-"
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bytes *= -1
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}
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i := 0
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for ; bytes > 1024 && i < 4; i++ {
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bytes /= 1024
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}
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return fmt.Sprintf("%s%d%sB", sign, bytes, bunits[i])
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}
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func sint(x int) string {
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if x == 0 {
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return "~"
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}
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sign := "+"
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if x < 0 {
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sign = "-"
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x *= -1
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}
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return fmt.Sprintf("%s%d", sign, x)
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}
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func minInt(a, b int) int {
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if a < b {
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return a
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}
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return b
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}
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func maxInt(a, b int) int {
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if a > b {
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return a
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}
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return b
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}
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type fdSorter []storage.FileDesc
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func (p fdSorter) Len() int {
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return len(p)
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}
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func (p fdSorter) Less(i, j int) bool {
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return p[i].Num < p[j].Num
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}
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func (p fdSorter) Swap(i, j int) {
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p[i], p[j] = p[j], p[i]
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}
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func sortFds(fds []storage.FileDesc) {
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sort.Sort(fdSorter(fds))
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}
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func ensureBuffer(b []byte, n int) []byte {
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if cap(b) < n {
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return make([]byte, n)
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}
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return b[:n]
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}
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