mirror of
https://github.com/gohugoio/hugo.git
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123 lines
3.7 KiB
Go
123 lines
3.7 KiB
Go
// Copyright 2019 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 resource
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import (
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"fmt"
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"strings"
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"github.com/gohugoio/hugo/hugofs/glob"
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)
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// Resources represents a slice of resources, which can be a mix of different types.
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// I.e. both pages and images etc.
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type Resources []Resource
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// ResourcesConverter converts a given slice of Resource objects to Resources.
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type ResourcesConverter interface {
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ToResources() Resources
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}
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// ByType returns resources of a given resource type (ie. "image").
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func (r Resources) ByType(tp string) Resources {
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var filtered Resources
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for _, resource := range r {
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if resource.ResourceType() == tp {
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filtered = append(filtered, resource)
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}
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}
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return filtered
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}
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// GetMatch finds the first Resource matching the given pattern, or nil if none found.
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// See Match for a more complete explanation about the rules used.
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func (r Resources) GetMatch(pattern string) Resource {
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g, err := glob.GetGlob(pattern)
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if err != nil {
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return nil
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}
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for _, resource := range r {
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if g.Match(strings.ToLower(resource.Name())) {
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return resource
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}
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}
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return nil
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}
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// Match gets all resources matching the given base filename prefix, e.g
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// "*.png" will match all png files. The "*" does not match path delimiters (/),
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// so if you organize your resources in sub-folders, you need to be explicit about it, e.g.:
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// "images/*.png". To match any PNG image anywhere in the bundle you can do "**.png", and
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// to match all PNG images below the images folder, use "images/**.jpg".
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// The matching is case insensitive.
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// Match matches by using the value of Resource.Name, which, by default, is a filename with
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// path relative to the bundle root with Unix style slashes (/) and no leading slash, e.g. "images/logo.png".
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// See https://github.com/gobwas/glob for the full rules set.
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func (r Resources) Match(pattern string) Resources {
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g, err := glob.GetGlob(pattern)
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if err != nil {
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return nil
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}
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var matches Resources
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for _, resource := range r {
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if g.Match(strings.ToLower(resource.Name())) {
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matches = append(matches, resource)
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}
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}
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return matches
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}
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type translatedResource interface {
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TranslationKey() string
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}
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// MergeByLanguage adds missing translations in r1 from r2.
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func (r Resources) MergeByLanguage(r2 Resources) Resources {
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result := append(Resources(nil), r...)
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m := make(map[string]bool)
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for _, rr := range r {
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if translated, ok := rr.(translatedResource); ok {
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m[translated.TranslationKey()] = true
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}
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}
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for _, rr := range r2 {
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if translated, ok := rr.(translatedResource); ok {
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if _, found := m[translated.TranslationKey()]; !found {
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result = append(result, rr)
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}
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}
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}
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return result
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}
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// MergeByLanguageInterface is the generic version of MergeByLanguage. It
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// is here just so it can be called from the tpl package.
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func (r Resources) MergeByLanguageInterface(in interface{}) (interface{}, error) {
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r2, ok := in.(Resources)
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if !ok {
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return nil, fmt.Errorf("%T cannot be merged by language", in)
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}
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return r.MergeByLanguage(r2), nil
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}
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// Source is an internal template and not meant for use in the templates. It
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// may change without notice.
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type Source interface {
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Publish() error
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}
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