mirror of
https://github.com/gohugoio/hugo.git
synced 2024-07-15 21:28:54 +00:00
f9978ed164
This commit pulls most of the image related logic into its own package, to make it easier to reason about and extend.
This is also a rewrite of the transformation logic used in Hugo Pipes, mostly to allow constructs like the one below:
{{ ($myimg | fingerprint ).Width }}
Fixes #5903
Fixes #6234
Fixes #6266
75 lines
2.4 KiB
Go
75 lines
2.4 KiB
Go
// Copyright 2018 The Hugo Authors. All rights reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
// Package templates contains functions for template processing of Resource objects.
|
|
package templates
|
|
|
|
import (
|
|
"github.com/gohugoio/hugo/helpers"
|
|
"github.com/gohugoio/hugo/resources"
|
|
"github.com/gohugoio/hugo/resources/internal"
|
|
"github.com/gohugoio/hugo/resources/resource"
|
|
"github.com/gohugoio/hugo/tpl"
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
// Client contains methods to perform template processing of Resource objects.
|
|
type Client struct {
|
|
rs *resources.Spec
|
|
|
|
textTemplate tpl.TemplateParseFinder
|
|
}
|
|
|
|
// New creates a new Client with the given specification.
|
|
func New(rs *resources.Spec, textTemplate tpl.TemplateParseFinder) *Client {
|
|
if rs == nil {
|
|
panic("must provice a resource Spec")
|
|
}
|
|
if textTemplate == nil {
|
|
panic("must provide a textTemplate")
|
|
}
|
|
return &Client{rs: rs, textTemplate: textTemplate}
|
|
}
|
|
|
|
type executeAsTemplateTransform struct {
|
|
rs *resources.Spec
|
|
textTemplate tpl.TemplateParseFinder
|
|
targetPath string
|
|
data interface{}
|
|
}
|
|
|
|
func (t *executeAsTemplateTransform) Key() internal.ResourceTransformationKey {
|
|
return internal.NewResourceTransformationKey("execute-as-template", t.targetPath)
|
|
}
|
|
|
|
func (t *executeAsTemplateTransform) Transform(ctx *resources.ResourceTransformationCtx) error {
|
|
tplStr := helpers.ReaderToString(ctx.From)
|
|
templ, err := t.textTemplate.Parse(ctx.InPath, tplStr)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "failed to parse Resource %q as Template:", ctx.InPath)
|
|
}
|
|
|
|
ctx.OutPath = t.targetPath
|
|
|
|
return templ.Execute(ctx.To, t.data)
|
|
}
|
|
|
|
func (c *Client) ExecuteAsTemplate(res resources.ResourceTransformer, targetPath string, data interface{}) (resource.Resource, error) {
|
|
return res.Transform(&executeAsTemplateTransform{
|
|
rs: c.rs,
|
|
targetPath: helpers.ToSlashTrimLeading(targetPath),
|
|
textTemplate: c.textTemplate,
|
|
data: data,
|
|
})
|
|
}
|