63 lines
2.0 KiB
Go
63 lines
2.0 KiB
Go
// Copyright 2020 The Cockroach Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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// implied. See the License for the specific language governing
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// permissions and limitations under the License.
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package redact
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import (
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"reflect"
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"sort"
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"github.com/cockroachdb/redact/builder"
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)
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// JoinTo writes the given slice of values delimited by the provided
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// delimiter to the given SafeWriter.
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func JoinTo(w SafeWriter, delim RedactableString, values interface{}) {
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// Ideally, we'd make the interface clearer: JoinTo is a generic function,
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// with a "values" argument of type []T where T is a type variable.
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v := reflect.ValueOf(values)
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if v.Kind() != reflect.Slice {
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// Note a slice: just print the value as-is.
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w.Print(values)
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}
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for i, l := 0, v.Len(); i < l; i++ {
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if i > 0 {
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w.Print(delim)
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}
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w.Print(v.Index(i).Interface())
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}
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}
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// Join creates a redactable string from the
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// given slice of redactable strings, adjoined
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// with the provided delimiter.
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func Join(delim RedactableString, s []RedactableString) RedactableString {
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var b builder.StringBuilder
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JoinTo(&b, delim, s)
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return b.RedactableString()
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}
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// SortStrings sorts the provided slice of redactable strings.
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func SortStrings(s []RedactableString) {
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sort.Sort(sortableSlice(s))
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}
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// sortableSlice attaches the methods of sort.Interface to
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// []RedactableString, sorting in increasing order.
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type sortableSlice []RedactableString
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func (p sortableSlice) Len() int { return len(p) }
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func (p sortableSlice) Less(i, j int) bool { return p[i] < p[j] }
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func (p sortableSlice) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
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