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// Copyright 2018 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 metadecoders
import (
"path/filepath"
"strings"
"github.com/gohugoio/hugo/parser/pageparser"
)
type Format string
const (
// These are the supported metdata formats in Hugo. Most of these are also
// supported as /data formats.
ORG Format = "org"
JSON Format = "json"
TOML Format = "toml"
YAML Format = "yaml"
)
// FormatFromString turns formatStr, typically a file extension without any ".",
// into a Format. It returns an empty string for unknown formats.
func FormatFromString(formatStr string) Format {
formatStr = strings.ToLower(formatStr)
if strings.Contains(formatStr, ".") {
// Assume a filename
formatStr = strings.TrimPrefix(filepath.Ext(formatStr), ".")
}
switch formatStr {
case "yaml", "yml":
return YAML
case "json":
return JSON
case "toml":
return TOML
case "org":
return ORG
}
return ""
}
// FormatFromFrontMatterType will return empty if not supported.
func FormatFromFrontMatterType(typ pageparser.ItemType) Format {
switch typ {
case pageparser.TypeFrontMatterJSON:
return JSON
case pageparser.TypeFrontMatterORG:
return ORG
case pageparser.TypeFrontMatterTOML:
return TOML
case pageparser.TypeFrontMatterYAML:
return YAML
default:
return ""
}
}
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