hugo resources 源码
hugo resources 代码
文件路径:/resources/resource/resources.go
// Copyright 2019 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 resource
import (
"fmt"
"strings"
"github.com/gohugoio/hugo/hugofs/glob"
"github.com/spf13/cast"
)
var _ ResourceFinder = (*Resources)(nil)
// Resources represents a slice of resources, which can be a mix of different types.
// I.e. both pages and images etc.
type Resources []Resource
// var _ resource.ResourceFinder = (*Namespace)(nil)
// ResourcesConverter converts a given slice of Resource objects to Resources.
type ResourcesConverter interface {
// For internal use.
ToResources() Resources
}
// ByType returns resources of a given resource type (e.g. "image").
func (r Resources) ByType(typ any) Resources {
tpstr, err := cast.ToStringE(typ)
if err != nil {
panic(err)
}
var filtered Resources
for _, resource := range r {
if resource.ResourceType() == tpstr {
filtered = append(filtered, resource)
}
}
return filtered
}
// Get locates the name given in Resources.
// The search is case insensitive.
func (r Resources) Get(name any) Resource {
namestr, err := cast.ToStringE(name)
if err != nil {
panic(err)
}
namestr = strings.ToLower(namestr)
for _, resource := range r {
if strings.EqualFold(namestr, resource.Name()) {
return resource
}
}
return nil
}
// GetMatch finds the first Resource matching the given pattern, or nil if none found.
// See Match for a more complete explanation about the rules used.
func (r Resources) GetMatch(pattern any) Resource {
patternstr, err := cast.ToStringE(pattern)
if err != nil {
panic(err)
}
g, err := glob.GetGlob(patternstr)
if err != nil {
panic(err)
}
for _, resource := range r {
if g.Match(strings.ToLower(resource.Name())) {
return resource
}
}
return nil
}
// Match gets all resources matching the given base filename prefix, e.g
// "*.png" will match all png files. The "*" does not match path delimiters (/),
// so if you organize your resources in sub-folders, you need to be explicit about it, e.g.:
// "images/*.png". To match any PNG image anywhere in the bundle you can do "**.png", and
// to match all PNG images below the images folder, use "images/**.jpg".
// The matching is case insensitive.
// Match matches by using the value of Resource.Name, which, by default, is a filename with
// path relative to the bundle root with Unix style slashes (/) and no leading slash, e.g. "images/logo.png".
// See https://github.com/gobwas/glob for the full rules set.
func (r Resources) Match(pattern any) Resources {
patternstr, err := cast.ToStringE(pattern)
if err != nil {
panic(err)
}
g, err := glob.GetGlob(patternstr)
if err != nil {
panic(err)
}
var matches Resources
for _, resource := range r {
if g.Match(strings.ToLower(resource.Name())) {
matches = append(matches, resource)
}
}
return matches
}
type translatedResource interface {
TranslationKey() string
}
// MergeByLanguage adds missing translations in r1 from r2.
func (r Resources) MergeByLanguage(r2 Resources) Resources {
result := append(Resources(nil), r...)
m := make(map[string]bool)
for _, rr := range r {
if translated, ok := rr.(translatedResource); ok {
m[translated.TranslationKey()] = true
}
}
for _, rr := range r2 {
if translated, ok := rr.(translatedResource); ok {
if _, found := m[translated.TranslationKey()]; !found {
result = append(result, rr)
}
}
}
return result
}
// MergeByLanguageInterface is the generic version of MergeByLanguage. It
// is here just so it can be called from the tpl package.
func (r Resources) MergeByLanguageInterface(in any) (any, error) {
r2, ok := in.(Resources)
if !ok {
return nil, fmt.Errorf("%T cannot be merged by language", in)
}
return r.MergeByLanguage(r2), nil
}
// Source is an internal template and not meant for use in the templates. It
// may change without notice.
type Source interface {
Publish() error
}
// ResourceFinder provides methods to find Resources.
// Note that GetRemote (as found in resources.GetRemote) is
// not covered by this interface, as this is only available as a global template function.
type ResourceFinder interface {
// Get locates the Resource with the given name in the current context (e.g. in .Page.Resources).
//
// It returns nil if no Resource could found, panics if name is invalid.
Get(name any) Resource
// GetMatch finds the first Resource matching the given pattern, or nil if none found.
//
// See Match for a more complete explanation about the rules used.
//
// It returns nil if no Resource could found, panics if pattern is invalid.
GetMatch(pattern any) Resource
// Match gets all resources matching the given base path prefix, e.g
// "*.png" will match all png files. The "*" does not match path delimiters (/),
// so if you organize your resources in sub-folders, you need to be explicit about it, e.g.:
// "images/*.png". To match any PNG image anywhere in the bundle you can do "**.png", and
// to match all PNG images below the images folder, use "images/**.jpg".
//
// The matching is case insensitive.
//
// Match matches by using a relative pathwith Unix style slashes (/) and no
// leading slash, e.g. "images/logo.png".
//
// See https://github.com/gobwas/glob for the full rules set.
//
// See Match for a more complete explanation about the rules used.
//
// It returns nil if no Resources could found, panics if pattern is invalid.
Match(pattern any) Resources
// ByType returns resources of a given resource type (e.g. "image").
// It returns nil if no Resources could found, panics if typ is invalid.
ByType(typ any) Resources
}
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