hugo/source/file.go

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// Copyright 2015 The Hugo Authors. All rights reserved.
//
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// 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
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// 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 source
import (
"io"
"path/filepath"
"strings"
"github.com/spf13/hugo/helpers"
"github.com/spf13/viper"
)
// File represents a source content file.
// All paths are relative from the source directory base
type File struct {
relpath string // Original relative path, e.g. section/foo.txt
logicalName string // foo.txt
baseName string // `post` for `post.md`, also `post.en` for `post.en.md`
Contents io.Reader
section string // The first directory
dir string // The relative directory Path (minus file name)
ext string // Just the ext (eg txt)
uniqueID string // MD5 of the file's path
translationBaseName string // `post` for `post.es.md` (if `Multilingual` is enabled.)
lang string // The language code if `Multilingual` is enabled
}
// UniqueID is the MD5 hash of the file's path and is for most practical applications,
// Hugo content files being one of them, considered to be unique.
func (f *File) UniqueID() string {
return f.uniqueID
}
// String returns the file's content as a string.
func (f *File) String() string {
return helpers.ReaderToString(f.Contents)
}
// Bytes returns the file's content as a byte slice.
func (f *File) Bytes() []byte {
return helpers.ReaderToBytes(f.Contents)
}
// BaseFileName is a filename without extension.
func (f *File) BaseFileName() string {
return f.baseName
}
// TranslationBaseName is a filename with no extension,
// not even the optional language extension part.
func (f *File) TranslationBaseName() string {
return f.translationBaseName
}
// Lang for this page, if `Multilingual` is enabled on your site.
func (f *File) Lang() string {
return f.lang
}
// Section is first directory below the content root.
func (f *File) Section() string {
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return f.section
}
// LogicalName is filename and extension of the file.
func (f *File) LogicalName() string {
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return f.logicalName
}
// SetDir sets the relative directory where this file lives.
// TODO(bep) Get rid of this.
func (f *File) SetDir(dir string) {
f.dir = dir
}
// Dir gets the name of the directory that contains this file.
// The directory is relative to the content root.
func (f *File) Dir() string {
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return f.dir
}
// Extension gets the file extension, i.e "myblogpost.md" will return "md".
func (f *File) Extension() string {
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return f.ext
}
// Ext is an alias for Extension.
func (f *File) Ext() string {
return f.Extension()
}
// Path gets the relative path including file name and extension.
// The directory is relative to the content root.
func (f *File) Path() string {
return f.relpath
}
// NewFileWithContents creates a new File pointer with the given relative path and
// content. The language defaults to "en".
func NewFileWithContents(relpath string, content io.Reader) *File {
file := NewFile(relpath)
file.Contents = content
file.lang = "en"
return file
}
// NewFile creates a new File pointer with the given relative path.
func NewFile(relpath string) *File {
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f := &File{
relpath: relpath,
}
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f.dir, f.logicalName = filepath.Split(f.relpath)
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f.ext = strings.TrimPrefix(filepath.Ext(f.LogicalName()), ".")
f.baseName = helpers.Filename(f.LogicalName())
lang := strings.TrimPrefix(filepath.Ext(f.baseName), ".")
if _, ok := viper.GetStringMap("languages")[lang]; lang == "" || !ok {
f.lang = viper.GetString("defaultContentLanguage")
f.translationBaseName = f.baseName
} else {
f.lang = lang
f.translationBaseName = helpers.Filename(f.baseName)
}
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f.section = helpers.GuessSection(f.Dir())
f.uniqueID = helpers.Md5String(f.Path())
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return f
}
// NewFileFromAbs creates a new File pointer with the given full file path path and
// content.
func NewFileFromAbs(base, fullpath string, content io.Reader) (f *File, err error) {
var name string
if name, err = helpers.GetRelativePath(fullpath, base); err != nil {
return nil, err
}
return NewFileWithContents(name, content), nil
}