forgejo/modules/templates/util_slice.go
wxiaoguang 8820191476
Improve template helper functions: string/slice (#24266)
Follow #23328

The improvements:

1. The `contains` functions are covered by tests
2. The inconsistent behavior of `containGeneric` is replaced by
`StringUtils.Contains` and `SliceUtils.Contains`
3. In the future we can move more help functions into XxxUtils to
simplify the `helper.go` and reduce unnecessary global functions.

FAQ:

1. Why it's called `StringUtils.Contains` but not `strings.Contains`
like Golang?

Because our `StringUtils` is not Golang's `strings` package. There will
be our own string functions.

---------

Co-authored-by: silverwind <me@silverwind.io>
2023-04-22 14:16:22 -04:00

36 lines
637 B
Go

// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package templates
import (
"fmt"
"reflect"
)
type SliceUtils struct{}
func NewSliceUtils() *SliceUtils {
return &SliceUtils{}
}
func (su *SliceUtils) Contains(s, v any) bool {
if s == nil {
return false
}
sv := reflect.ValueOf(s)
if sv.Kind() != reflect.Slice && sv.Kind() != reflect.Array {
panic(fmt.Sprintf("invalid type, expected slice or array, but got: %T", s))
}
for i := 0; i < sv.Len(); i++ {
it := sv.Index(i)
if !it.CanInterface() {
continue
}
if it.Interface() == v {
return true
}
}
return false
}