phoenix/hugo
1
0
Fork 0
mirror of https://github.com/gohugoio/hugo.git synced 2024-07-02 15:20:28 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add htmlEscape and htmlUnescape template functions

Browse source 
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
Show stats Download patch file Download diff file Expand all files Collapse all files

21
docs/content/templates/functions.md
View file

@ -448,6 +448,27 @@ e.g. `{{ "I :heart: Hugo" | emojify }}`
Takes a string of code and a language, uses Pygments to return the syntax highlighted code in HTML.
Used in the [highlight shortcode](/extras/highlighting/).
### htmlEscape
HtmlEscape returns the given string with the critical reserved HTML codes escaped,
such that `&` becomes `&amp;` and so on. It escapes only: `<`, `>`, `&`, `'` and `"`.
Bear in mind that, unless content is passed to `safeHTML`, output strings are escaped
usually by the processor anyway.
e.g.
`{{ htmlEscape "Hugo & Caddy > Wordpress & Apache" }} → "Hugo &amp; Caddy &gt; Wordpress &amp; Apache"`
### htmlUnescape
HtmlUnescape returns the given string with html escape codes un-escaped. This
un-escapes more codes than `htmlEscape` escapes, including `#` codes and pre-UTF8
escapes for accented characters. It defers completely to the Go `html.UnescapeString`
function, so functionality is consistent with that codebase.
Remember to pass the output of this to `safeHTML` if fully unescaped characters
are desired, or the output will be escaped again as normal.
e.g.
`{{ htmlUnescape "Hugo &amp; Caddy &gt; Wordpress &amp; Apache" }} → "Hugo & Caddy > Wordpress & Apache"`
### humanize
Humanize returns the humanized version of an argument with the first letter capitalized.

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