ref: 0f6c73cf2ef3fa478a635b54652173eefa1f3a17
parent: 01b8bc1b261cef85eb600fa6c2deec07fd7dc4b2
author: digitalcraftsman <[email protected]>
date: Sun Dec 4 08:35:31 EST 2016
tpl: Add sha256 template function Fixes #2742
--- a/docs/content/templates/functions.md
+++ b/docs/content/templates/functions.md
@@ -768,6 +768,17 @@
<!-- returns the string "c8b5b0e33d408246e30f53e32b8f7627a7a649d4" -->
```
+
+### sha256
+
+`sha256` hashes the given input and returns its SHA256 checksum.
+
+```html
+{{ sha256 "Hello world, gophers!" }}+<!-- returns the string "6ec43b78da9669f50e4e422575c54bf87536954ccd58280219c393f2ce352b46" -->
+```
+
+
## Internationalization
### i18n
--- a/tpl/template_funcs.go
+++ b/tpl/template_funcs.go
@@ -19,6 +19,7 @@
"bytes"
_md5 "crypto/md5"
_sha1 "crypto/sha1"
+ _sha256 "crypto/sha256"
"encoding/base64"
"encoding/hex"
"encoding/json"
@@ -1968,6 +1969,17 @@
return hex.EncodeToString(hash[:]), nil
}
+// sha256 hashes the given input and returns its SHA256 checksum
+func sha256(in interface{}) (string, error) {+ conv, err := cast.ToStringE(in)
+ if err != nil {+ return "", err
+ }
+
+ hash := _sha256.Sum256([]byte(conv))
+ return hex.EncodeToString(hash[:]), nil
+}
+
// querify encodes the given parameters “URL encoded” form ("bar=baz&foo=quux") sorted by key. func querify(params ...interface{}) (string, error) { qs := url.Values{}@@ -2099,6 +2111,7 @@
"sanitizeurl": helpers.SanitizeURL,
"seq": helpers.Seq,
"sha1": sha1,
+ "sha256": sha256,
"shuffle": shuffle,
"singularize": singularize,
"slice": slice,
--- a/tpl/template_funcs_test.go
+++ b/tpl/template_funcs_test.go
@@ -145,6 +145,7 @@
safeURL: {{ "http://gohugo.io" | safeURL | safeURL }} seq: {{ seq 3 }} sha1: {{ sha1 "Hello world, gophers!" }}+sha256: {{ sha256 "Hello world, gophers!" }} singularize: {{ "cats" | singularize }} slicestr: {{slicestr "BatMan" 0 3}} slicestr: {{slicestr "BatMan" 3}}@@ -214,6 +215,7 @@
safeURL: http://gohugo.io
seq: [1 2 3]
sha1: c8b5b0e33d408246e30f53e32b8f7627a7a649d4
+sha256: 6ec43b78da9669f50e4e422575c54bf87536954ccd58280219c393f2ce352b46
singularize: cat
slicestr: Bat
slicestr: Man
@@ -2561,6 +2563,30 @@
_, err = sha1(t)
if err == nil { t.Error("Expected error from sha1")+ }
+ }
+}
+
+func TestSHA256(t *testing.T) {+ for i, this := range []struct {+ input string
+ expectedHash string
+ }{+ {"Hello world, gophers!", "6ec43b78da9669f50e4e422575c54bf87536954ccd58280219c393f2ce352b46"},+ {"Lorem ipsum dolor", "9b3e1beb7053e0f900a674dd1c99aca3355e1275e1b03d3cb1bc977f5154e196"},+ } {+ result, err := sha256(this.input)
+ if err != nil {+ t.Errorf("sha256 returned error: %s", err)+ }
+
+ if result != this.expectedHash {+ t.Errorf("[%d] sha256: expected '%s', got '%s'", i, this.expectedHash, result)+ }
+
+ _, err = sha256(t)
+ if err == nil {+ t.Error("Expected error from sha256")}
}
}