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humanize.go
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humanize.go
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// Copyright 2016 The Cockroach Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License.
//
// Author: Bram Gruneir (bram+code@cockroachlabs.com)
package humanizeutil
import (
"fmt"
"math"
"github.com/dustin/go-humanize"
)
// IBytes is an int64 version of go-humanize's IBytes.
func IBytes(value int64) string {
if value < 0 {
return fmt.Sprintf("-%s", humanize.IBytes(uint64(-value)))
}
return humanize.IBytes(uint64(value))
}
// ParseBytes is an int64 version of go-humanize's ParseBytes.
func ParseBytes(s string) (int64, error) {
if len(s) == 0 {
return 0, fmt.Errorf("parsing \"\": invalid syntax")
}
var startIndex int
var negative bool
if s[0] == '-' {
negative = true
startIndex = 1
}
value, err := humanize.ParseBytes(s[startIndex:])
if err != nil {
return 0, err
}
if value > math.MaxInt64 {
return 0, fmt.Errorf("too large: %s", s)
}
if negative {
return -int64(value), nil
}
return int64(value), nil
}