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dea71670c0
Before this commit, you would have to use page bundles to do image processing etc. in Hugo.
This commit adds
* A new `/assets` top-level project or theme dir (configurable via `assetDir`)
* A new template func, `resources.Get` which can be used to "get a resource" that can be further processed.
This means that you can now do this in your templates (or shortcodes):
```bash
{{ $sunset := (resources.Get "images/sunset.jpg").Fill "300x200" }}
```
This also adds a new `extended` build tag that enables powerful SCSS/SASS support with source maps. To compile this from source, you will also need a C compiler installed:
```
HUGO_BUILD_TAGS=extended mage install
```
Note that you can use output of the SCSS processing later in a non-SCSSS-enabled Hugo.
The `SCSS` processor is a _Resource transformation step_ and it can be chained with the many others in a pipeline:
```bash
{{ $css := resources.Get "styles.scss" | resources.ToCSS | resources.PostCSS | resources.Minify | resources.Fingerprint }}
<link rel="stylesheet" href="{{ $styles.RelPermalink }}" integrity="{{ $styles.Data.Digest }}" media="screen">
```
The transformation funcs above have aliases, so it can be shortened to:
```bash
{{ $css := resources.Get "styles.scss" | toCSS | postCSS | minify | fingerprint }}
<link rel="stylesheet" href="{{ $styles.RelPermalink }}" integrity="{{ $styles.Data.Digest }}" media="screen">
```
A quick tip would be to avoid the fingerprinting part, and possibly also the not-superfast `postCSS` when you're doing development, as it allows Hugo to be smarter about the rebuilding.
Documentation will follow, but have a look at the demo repo in https://github.com/bep/hugo-sass-test
New functions to create `Resource` objects:
* `resources.Get` (see above)
* `resources.FromString`: Create a Resource from a string.
New `Resource` transformation funcs:
* `resources.ToCSS`: Compile `SCSS` or `SASS` into `CSS`.
* `resources.PostCSS`: Process your CSS with PostCSS. Config file support (project or theme or passed as an option).
* `resources.Minify`: Currently supports `css`, `js`, `json`, `html`, `svg`, `xml`.
* `resources.Fingerprint`: Creates a fingerprinted version of the given Resource with Subresource Integrity..
* `resources.Concat`: Concatenates a list of Resource objects. Think of this as a poor man's bundler.
* `resources.ExecuteAsTemplate`: Parses and executes the given Resource and data context (e.g. .Site) as a Go template.
Fixes #4381
Fixes #4903
Fixes #4858
77 lines
1.9 KiB
Go
77 lines
1.9 KiB
Go
// Copyright 2017-present The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package tplimpl
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import (
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"fmt"
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"html/template"
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"strings"
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texttemplate "text/template"
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bp "github.com/gohugoio/hugo/bufferpool"
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"github.com/gohugoio/hugo/deps"
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)
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// Some of the template funcs are'nt entirely stateless.
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type templateFuncster struct {
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funcMap template.FuncMap
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*deps.Deps
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}
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func newTemplateFuncster(deps *deps.Deps) *templateFuncster {
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return &templateFuncster{
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Deps: deps,
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}
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}
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// Partial executes the named partial and returns either a string,
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// when called from text/template, for or a template.HTML.
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func (t *templateFuncster) partial(name string, contextList ...interface{}) (interface{}, error) {
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if strings.HasPrefix("partials/", name) {
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name = name[8:]
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}
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var context interface{}
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if len(contextList) == 0 {
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context = nil
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} else {
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context = contextList[0]
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}
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for _, n := range []string{"partials/" + name, "theme/partials/" + name} {
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templ, found := t.Tmpl.Lookup(n)
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if !found {
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// For legacy reasons.
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templ, found = t.Tmpl.Lookup(n + ".html")
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}
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if found {
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b := bp.GetBuffer()
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defer bp.PutBuffer(b)
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if err := templ.Execute(b, context); err != nil {
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return "", err
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}
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if _, ok := templ.(*texttemplate.Template); ok {
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return b.String(), nil
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}
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return template.HTML(b.String()), nil
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}
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}
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return "", fmt.Errorf("Partial %q not found", name)
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}
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