go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/cv/internal/prjmanager/prjpb/logreason.go (about)

     1  // Copyright 2021 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package prjpb
    16  
    17  import (
    18  	"sort"
    19  	"strings"
    20  )
    21  
    22  // SortAndDedupeLogReasons does what its name says without modifying input.
    23  func SortAndDedupeLogReasons(in []LogReason) []LogReason {
    24  	var out []LogReason
    25  	if len(in) == 0 {
    26  		return out
    27  	}
    28  	out = append(out, in...) // copy
    29  	sort.Slice(out, func(i, j int) bool { return out[i] < out[j] })
    30  	prevUniqIndex := 0
    31  	for _, o := range out {
    32  		if out[prevUniqIndex] == o {
    33  			continue
    34  		}
    35  		prevUniqIndex++
    36  		out[prevUniqIndex] = o
    37  	}
    38  	return out[:prevUniqIndex+1]
    39  }
    40  
    41  // FormatLogReasons produces "[HUMAN, READABLE]" string for a list of statuses.
    42  func FormatLogReasons(in []LogReason) string {
    43  	sb := strings.Builder{}
    44  	sb.WriteRune('[')
    45  	for i, r := range in {
    46  		if i > 0 {
    47  			sb.WriteString(", ")
    48  		}
    49  		sb.WriteString(r.String())
    50  	}
    51  	sb.WriteRune(']')
    52  	return sb.String()
    53  }