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241b21b0fd
Primary motivation is documentation, but it will also hopefully simplify the code. Also, * Lower case the default output format names; this is in line with the custom ones (map keys) and how it's treated all the places. This avoids doing `stringds.EqualFold` everywhere. Closes #10896 Closes #10620
140 lines
3.7 KiB
Go
140 lines
3.7 KiB
Go
// Copyright 2023 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 media
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import (
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"errors"
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"fmt"
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"reflect"
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"sort"
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"strings"
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"github.com/gohugoio/hugo/common/maps"
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"github.com/gohugoio/hugo/config"
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"github.com/mitchellh/mapstructure"
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"github.com/spf13/cast"
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)
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// DefaultTypes is the default media types supported by Hugo.
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var DefaultTypes Types
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func init() {
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ns, err := DecodeTypes(nil)
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if err != nil {
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panic(err)
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}
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DefaultTypes = ns.Config
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// Initialize the Builtin types with values from DefaultTypes.
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v := reflect.ValueOf(&Builtin).Elem()
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for i := 0; i < v.NumField(); i++ {
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f := v.Field(i)
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builtinType := f.Interface().(Type)
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defaultType, found := DefaultTypes.GetByType(builtinType.Type)
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if !found {
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panic(errors.New("missing default type for builtin type: " + builtinType.Type))
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}
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f.Set(reflect.ValueOf(defaultType))
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}
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}
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// Hold the configuration for a given media type.
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type MediaTypeConfig struct {
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// The file suffixes used for this media type.
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Suffixes []string
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// Delimiter used before suffix.
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Delimiter string
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}
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// DecodeTypes decodes the given map of media types.
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func DecodeTypes(in map[string]any) (*config.ConfigNamespace[map[string]MediaTypeConfig, Types], error) {
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buildConfig := func(v any) (Types, any, error) {
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m, err := maps.ToStringMapE(v)
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if err != nil {
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return nil, nil, err
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}
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if m == nil {
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m = map[string]any{}
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}
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m = maps.CleanConfigStringMap(m)
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// Merge with defaults.
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maps.MergeShallow(m, defaultMediaTypesConfig)
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var types Types
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for k, v := range m {
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mediaType, err := FromString(k)
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if err != nil {
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return nil, nil, err
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}
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if err := mapstructure.WeakDecode(v, &mediaType); err != nil {
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return nil, nil, err
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}
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mm := maps.ToStringMap(v)
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suffixes, found := maps.LookupEqualFold(mm, "suffixes")
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if found {
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mediaType.SuffixesCSV = strings.TrimSpace(strings.ToLower(strings.Join(cast.ToStringSlice(suffixes), ",")))
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}
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if mediaType.SuffixesCSV != "" && mediaType.Delimiter == "" {
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mediaType.Delimiter = DefaultDelimiter
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}
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InitMediaType(&mediaType)
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types = append(types, mediaType)
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}
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sort.Sort(types)
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return types, m, nil
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}
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ns, err := config.DecodeNamespace[map[string]MediaTypeConfig](in, buildConfig)
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if err != nil {
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return nil, fmt.Errorf("failed to decode media types: %w", err)
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}
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return ns, nil
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}
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func suffixIsRemoved() error {
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return errors.New(`MediaType.Suffix is removed. Before Hugo 0.44 this was used both to set a custom file suffix and as way
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to augment the mediatype definition (what you see after the "+", e.g. "image/svg+xml").
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This had its limitations. For one, it was only possible with one file extension per MIME type.
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Now you can specify multiple file suffixes using "suffixes", but you need to specify the full MIME type
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identifier:
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[mediaTypes]
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[mediaTypes."image/svg+xml"]
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suffixes = ["svg", "abc" ]
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In most cases, it will be enough to just change:
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[mediaTypes]
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[mediaTypes."my/custom-mediatype"]
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suffix = "txt"
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To:
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[mediaTypes]
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[mediaTypes."my/custom-mediatype"]
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suffixes = ["txt"]
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Note that you can still get the Media Type's suffix from a template: {{ $mediaType.Suffix }}. But this will now map to the MIME type filename.
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`)
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}
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