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tpl/strings: Add strings.Count

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Fixes #7453
This commit is contained in:
Bjørn Erik Pedersen 2020-07-03 10:34:40 +02:00
parent e9f87c4e3f
commit 028b356787
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GPG key ID: 330E6E2BD4859D8F
2 changed files with 22 additions and 0 deletions
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7
tpl/strings/init.go
View file

@ -51,6 +51,13 @@ func init() {
[][2]string{},
)
ns.AddMethodMapping(ctx.Count,
nil,
[][2]string{
{`{{"aabab" | strings.Count "a" }}`, `3`},
},
)
ns.AddMethodMapping(ctx.FindRE,
[]string{"findRE"},
[][2]string{

15
tpl/strings/strings.go
View file

@ -18,6 +18,7 @@ import (
"errors"
"fmt"
"html/template"
"strings"
_strings "strings"
"unicode/utf8"
@ -90,6 +91,20 @@ func (ns *Namespace) CountWords(s interface{}) (int, error) {
return counter, nil
}
// Count counts the number of non-overlapping instances of substr in s.
// If substr is an empty string, Count returns 1 + the number of Unicode code points in s.
func (ns *Namespace) Count(substr, s interface{}) (int, error) {
substrs, err := cast.ToStringE(substr)
if err != nil {
return 0, _errors.Wrap(err, "Failed to convert substr to string")
}
ss, err := cast.ToStringE(s)
if err != nil {
return 0, _errors.Wrap(err, "Failed to convert s to string")
}
return strings.Count(ss, substrs), nil
}
// Chomp returns a copy of s with all trailing newline characters removed.
func (ns *Namespace) Chomp(s interface{}) (interface{}, error) {
ss, err := cast.ToStringE(s)