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helpers.go
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/
helpers.go
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// Copyright 2018 Drone.IO Inc
//
// 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.
//
// Taken from github.com/drone/drone-template-lib
package plugin
import (
"fmt"
"math"
"net/url"
"reflect"
"regexp"
"strings"
"time"
"unicode"
"unicode/utf8"
"github.com/Masterminds/sprig/v3"
"github.com/flowchartsman/handlebars/v3"
)
func init() {
funcs := map[string]interface{}{
"duration": toDuration,
"datetime": toDatetime,
"success": isSuccess,
"failure": isFailure,
"truncate": truncate,
"urlencode": urlencode,
"since": since,
"uppercasefirst": uppercaseFirst,
"uppercase": strings.ToUpper,
"lowercase": strings.ToLower,
"regexReplace": regexReplace,
}
for name, f := range sprig.GenericFuncMap() {
if !validHelper(f) {
continue
}
funcs[name] = f
}
handlebars.RegisterHelpers(funcs)
}
func toDuration(started, finished int64) string {
return fmt.Sprint(time.Duration(finished-started) * time.Second)
}
func toDatetime(timestamp int64, layout, zone string) string {
if len(zone) == 0 {
return time.Unix(timestamp, 0).Format(layout)
}
loc, err := time.LoadLocation(zone)
if err != nil {
return time.Unix(timestamp, 0).Local().Format(layout)
}
return time.Unix(timestamp, 0).In(loc).Format(layout)
}
func isSuccess(conditional bool, options *handlebars.Options) string {
if !conditional {
return options.Inverse()
}
switch options.ParamStr(0) {
case "success":
return options.Fn()
default:
return options.Inverse()
}
}
func isFailure(conditional bool, options *handlebars.Options) string {
if !conditional {
return options.Inverse()
}
switch options.ParamStr(0) {
case "failure", "error", "killed":
return options.Fn()
default:
return options.Inverse()
}
}
func truncate(s string, len int) string {
if utf8.RuneCountInString(s) <= int(math.Abs(float64(len))) {
return s
}
runes := []rune(s)
if len < 0 {
len = -len
return string(runes[len:])
}
return string(runes[:len])
}
func urlencode(options *handlebars.Options) string {
return url.QueryEscape(options.Fn())
}
func since(start int64) string {
now := time.Unix(time.Now().Unix(), 0)
return fmt.Sprint(now.Sub(time.Unix(start, 0)))
}
func uppercaseFirst(s string) string {
a := []rune(s)
a[0] = unicode.ToUpper(a[0])
s = string(a)
return s
}
func regexReplace(pattern string, input string, replacement string) string {
re := regexp.MustCompile(pattern)
return re.ReplaceAllString(input, replacement)
}
func validHelper(f interface{}) bool {
typ := reflect.TypeOf(f)
if typ.NumOut() != 1 {
return false
}
v := reflect.Zero(typ.Out(0))
switch v.Interface().(type) {
case
bool,
float64,
[]int,
int,
int64,
[][]interface{},
[]interface{},
interface{},
map[string]interface{},
map[string]string,
[]string,
string,
time.Time:
return true
}
return false
}