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Add htmlEscape and htmlUnescape template functions

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These functions allow trivial escaping and unescaping of HTML entities,
and make it far easier to compose other functions for the creation of
parameterised URLs.
This commit is contained in:
Cathal Garvey
2016-07-18 23:14:05 +01:00
committed by Bjørn Erik Pedersen
parent 7dd5cd675a
commit 20555b1630
3 changed files with 53 additions and 0 deletions
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18
tpl/template_funcs.go
View File

@@ -1775,6 +1775,22 @@ func querify(params ...interface{}) (string, error) {
return qs.Encode(), nil
}
func htmlEscape(in interface{}) (string, error) {
conv, err := cast.ToStringE(in)
if err != nil {
return "", err
}
return html.EscapeString(conv), nil
}
func htmlUnescape(in interface{}) (string, error) {
conv, err := cast.ToStringE(in)
if err != nil {
return "", err
}
return html.UnescapeString(conv), nil
}
func init() {
funcMap = template.FuncMap{
"absURL": func(a string) template.HTML { return template.HTML(helpers.AbsURL(a)) },
@@ -1803,6 +1819,8 @@ func init() {
"gt": gt,
"hasPrefix": func(a, b string) bool { return strings.HasPrefix(a, b) },
"highlight": highlight,
"htmlEscape": htmlEscape,
"htmlUnescape": htmlUnescape,
"humanize": humanize,
"in": in,
"index": index,

14
tpl/template_funcs_test.go
View File

@@ -93,6 +93,13 @@ eq: {{ if eq .Section "blog" }}current{{ end }}
findRE: {{ findRE "[G|g]o" "Hugo is a static side generator written in Go." 1 }}
hasPrefix 1: {{ hasPrefix "Hugo" "Hu" }}
hasPrefix 2: {{ hasPrefix "Hugo" "Fu" }}
htmlEscape 1: {{ htmlEscape "Cathal Garvey & The Sunshine Band <cathal@foo.bar>" | safeHTML}}
htmlEscape 2: {{ htmlEscape "Cathal Garvey & The Sunshine Band <cathal@foo.bar>"}}
htmlUnescape 1: {{htmlUnescape "Cathal Garvey &amp; The Sunshine Band &lt;cathal@foo.bar&gt;" | safeHTML}}
htmlUnescape 2: {{"Cathal Garvey &amp;amp; The Sunshine Band &amp;lt;cathal@foo.bar&amp;gt;" | htmlUnescape | htmlUnescape | safeHTML}}
htmlUnescape 3: {{"Cathal Garvey &amp;amp; The Sunshine Band &amp;lt;cathal@foo.bar&amp;gt;" | htmlUnescape | htmlUnescape }}
htmlUnescape 4: {{ htmlEscape "Cathal Garvey & The Sunshine Band <cathal@foo.bar>" | htmlUnescape | safeHTML }}
htmlUnescape 5: {{ htmlUnescape "Cathal Garvey &amp; The Sunshine Band &lt;cathal@foo.bar&gt;" | htmlEscape | safeHTML }}
humanize 1: {{ humanize "my-first-post" }}
humanize 2: {{ humanize "myCamelPost" }}
humanize 3: {{ humanize "52" }}
@@ -149,6 +156,13 @@ eq: current
findRE: [go]
hasPrefix 1: true
hasPrefix 2: false
htmlEscape 1: Cathal Garvey &amp; The Sunshine Band &lt;cathal@foo.bar&gt;
htmlEscape 2: Cathal Garvey &amp;amp; The Sunshine Band &amp;lt;cathal@foo.bar&amp;gt;
htmlUnescape 1: Cathal Garvey & The Sunshine Band <cathal@foo.bar>
htmlUnescape 2: Cathal Garvey & The Sunshine Band <cathal@foo.bar>
htmlUnescape 3: Cathal Garvey &amp; The Sunshine Band &lt;cathal@foo.bar&gt;
htmlUnescape 4: Cathal Garvey & The Sunshine Band <cathal@foo.bar>
htmlUnescape 5: Cathal Garvey &amp; The Sunshine Band &lt;cathal@foo.bar&gt;
humanize 1: My first post
humanize 2: My camel post
humanize 3: 52nd