mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-21 20:46:30 -05:00
132 lines
3.6 KiB
Go
132 lines
3.6 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 resources
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import (
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"fmt"
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"strconv"
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"github.com/gohugoio/hugo/hugofs/glob"
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"github.com/gohugoio/hugo/resources/resource"
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"github.com/pkg/errors"
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"github.com/spf13/cast"
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"strings"
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"github.com/gohugoio/hugo/common/maps"
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)
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var (
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_ metaAssigner = (*genericResource)(nil)
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)
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// metaAssigner allows updating metadata in resources that supports it.
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type metaAssigner interface {
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setTitle(title string)
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setName(name string)
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updateParams(params map[string]interface{})
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}
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const counterPlaceHolder = ":counter"
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// AssignMetadata assigns the given metadata to those resources that supports updates
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// and matching by wildcard given in `src` using `filepath.Match` with lower cased values.
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// This assignment is additive, but the most specific match needs to be first.
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// The `name` and `title` metadata field support shell-matched collection it got a match in.
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// See https://golang.org/pkg/path/#Match
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func AssignMetadata(metadata []map[string]interface{}, resources ...resource.Resource) error {
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counters := make(map[string]int)
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for _, r := range resources {
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if _, ok := r.(metaAssigner); !ok {
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continue
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}
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var (
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nameSet, titleSet bool
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nameCounter, titleCounter = 0, 0
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nameCounterFound, titleCounterFound bool
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resourceSrcKey = strings.ToLower(r.Name())
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)
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ma := r.(metaAssigner)
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for _, meta := range metadata {
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src, found := meta["src"]
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if !found {
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return fmt.Errorf("missing 'src' in metadata for resource")
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}
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srcKey := strings.ToLower(cast.ToString(src))
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glob, err := glob.GetGlob(srcKey)
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if err != nil {
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return errors.Wrap(err, "failed to match resource with metadata")
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}
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match := glob.Match(resourceSrcKey)
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if match {
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if !nameSet {
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name, found := meta["name"]
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if found {
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name := cast.ToString(name)
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if !nameCounterFound {
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nameCounterFound = strings.Contains(name, counterPlaceHolder)
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}
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if nameCounterFound && nameCounter == 0 {
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counterKey := "name_" + srcKey
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nameCounter = counters[counterKey] + 1
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counters[counterKey] = nameCounter
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}
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ma.setName(replaceResourcePlaceholders(name, nameCounter))
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nameSet = true
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}
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}
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if !titleSet {
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title, found := meta["title"]
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if found {
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title := cast.ToString(title)
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if !titleCounterFound {
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titleCounterFound = strings.Contains(title, counterPlaceHolder)
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}
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if titleCounterFound && titleCounter == 0 {
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counterKey := "title_" + srcKey
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titleCounter = counters[counterKey] + 1
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counters[counterKey] = titleCounter
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}
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ma.setTitle((replaceResourcePlaceholders(title, titleCounter)))
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titleSet = true
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}
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}
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params, found := meta["params"]
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if found {
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m := cast.ToStringMap(params)
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// Needed for case insensitive fetching of params values
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maps.ToLower(m)
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ma.updateParams(m)
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}
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}
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}
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}
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return nil
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}
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func replaceResourcePlaceholders(in string, counter int) string {
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return strings.Replace(in, counterPlaceHolder, strconv.Itoa(counter), -1)
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}
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