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Improve type support in resources.Concat

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This allows the result of `.Resources.Match` and similar to be concatenated.

Fixes #4934
This commit is contained in:
Bjørn Erik Pedersen 2018-07-12 11:26:51 +02:00
parent 80c8f3b81a
commit 306573def0
3 changed files with 59 additions and 14 deletions
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38
hugolib/resource_chain_test.go
View file

@ -80,14 +80,21 @@ Min HTML: {{ ( resources.Get "mydata/html1.html" | resources.Minify ).Content |
{{ $a := "A" | resources.FromString "a.txt"}}
{{ $b := "B" | resources.FromString "b.txt"}}
{{ $c := "C" | resources.FromString "c.txt"}}
{{ $textResources := .Resources.Match "*.txt" }}
{{ $combined := slice $a $b $c | resources.Concat "bundle/concat.txt" }}
T: Content: {{ $combined.Content }}|RelPermalink: {{ $combined.RelPermalink }}|Permalink: {{ $combined.Permalink }}|MediaType: {{ $combined.MediaType.Type }}
T1: Content: {{ $combined.Content }}|RelPermalink: {{ $combined.RelPermalink }}|Permalink: {{ $combined.Permalink }}|MediaType: {{ $combined.MediaType.Type }}
{{ with $textResources }}
{{ $combinedText := . | resources.Concat "bundle/concattxt.txt" }}
T2: Content: {{ $combinedText.Content }}|{{ $combinedText.RelPermalink }}
{{ end }}
`)
}, func(b *sitesBuilder) {
b.AssertFileContent("public/index.html", `T: Content: ABC|RelPermalink: /bundle/concat.txt|Permalink: http://example.com/bundle/concat.txt|MediaType: text/plain`)
b.AssertFileContent("public/index.html", `T1: Content: ABC|RelPermalink: /bundle/concat.txt|Permalink: http://example.com/bundle/concat.txt|MediaType: text/plain`)
b.AssertFileContent("public/bundle/concat.txt", "ABC")
}},
b.AssertFileContent("public/index.html", `T2: Content: t1t|t2t|`)
b.AssertFileContent("public/bundle/concattxt.txt", "t1t|t2t|")
}},
{"fromstring", func() bool { return true }, func(b *sitesBuilder) {
b.WithTemplates("home.html", `
{{ $r := "Hugo Rocks!" | resources.FromString "rocks/hugo.txt" }}
@ -137,12 +144,31 @@ T3: {{ $resultMD5.Content }}|{{ $resultMD5.RelPermalink}}|{{$resultMD5.MediaType
b := newTestSitesBuilder(t).WithLogger(loggers.NewWarningLogger())
b.WithSimpleConfigFile()
b.WithContent("page.md", `
b.WithContent("_index.md", `
---
title: Hello
title: Home
---
`)
Home.
`,
"page1.md", `
---
title: Hello1
---
Hello1
`,
"page2.md", `
---
title: Hello2
---
Hello2
`,
"t1.txt", "t1t|",
"t2.txt", "t2t|",
)
b.WithSourceFile(filepath.Join("assets", "css", "styles1.css"), `
h1 {

2
resource/bundler/bundler.go
View file

@ -62,7 +62,7 @@ func (r *multiReadSeekCloser) Close() error {
}
// Concat concatenates the list of Resource objects.
func (c *Client) Concat(targetPath string, resources []resource.Resource) (resource.Resource, error) {
func (c *Client) Concat(targetPath string, resources resource.Resources) (resource.Resource, error) {
// The CACHE_OTHER will make sure this will be re-created and published on rebuilds.
return c.rs.ResourceCache.GetOrCreate(resource.CACHE_OTHER, targetPath, func() (resource.Resource, error) {
var resolvedm media.Type

33
tpl/resources/resources.go
View file

@ -79,19 +79,38 @@ func (ns *Namespace) Get(filename interface{}) (resource.Resource, error) {
// Concat concatenates a slice of Resource objects. These resources must
// (currently) be of the same Media Type.
func (ns *Namespace) Concat(targetPathIn interface{}, r []interface{}) (resource.Resource, error) {
func (ns *Namespace) Concat(targetPathIn interface{}, r interface{}) (resource.Resource, error) {
targetPath, err := cast.ToStringE(targetPathIn)
if err != nil {
return nil, err
}
rr := make([]resource.Resource, len(r))
for i := 0; i < len(r); i++ {
rv, ok := r[i].(resource.Resource)
if !ok {
return nil, fmt.Errorf("cannot concat type %T", rv)
var rr resource.Resources
switch v := r.(type) {
// This is what we get from the slice func.
case []interface{}:
rr = make([]resource.Resource, len(v))
for i := 0; i < len(v); i++ {
rv, ok := v[i].(resource.Resource)
if !ok {
return nil, fmt.Errorf("cannot concat type %T", v[i])
}
rr[i] = rv
}
rr[i] = rv
// This is what we get from .Resources.Match etc.
case resource.Resources:
rr = v
default:
// We may support Page collections at one point, but we need to think about ...
// what to acutually concatenate.
return nil, fmt.Errorf("slice %T not supported in concat", r)
}
if len(rr) == 0 {
return nil, errors.New("must provide one or more Resource objects to concat")
}
return ns.bundlerClient.Concat(targetPath, rr)
}