helpers

package
v0.24.1 Latest Latest
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Published: Jun 24, 2017 License: Apache-2.0 Imports: 37 Imported by: 0

Documentation

Overview

Package helpers implements general utility functions that work with and on content. The helper functions defined here lay down the foundation of how Hugo works with files and filepaths, and perform string operations on content.

Index

Constants

View Source
const FilePathSeparator = string(filepath.Separator)

FilePathSeparator as defined by os.Separator.

Variables

View Source
var (
	// DistinctErrorLog can be used to avoid spamming the logs with errors.
	DistinctErrorLog = NewDistinctErrorLogger()

	// DistinctWarnLog can be used to avoid spamming the logs with warnings.
	DistinctWarnLog = NewDistinctWarnLogger()

	// DistinctFeedbackLog can be used to avoid spamming the logs with info messages.
	DistinctFeedbackLog = NewDistinctFeedbackLogger()
)
View Source
var (
	// ErrThemeUndefined is returned when a theme has not be defined by the user.
	ErrThemeUndefined = errors.New("no theme set")

	ErrWalkRootTooShort = errors.New("Path too short. Stop walking.")
)
View Source
var CurrentHugoVersion = HugoVersion{
	Number:     0.24,
	PatchLevel: 1,
	Suffix:     "",
}

CurrentHugoVersion represents the current build version. This should be the only one.

View Source
var SummaryDivider = []byte("<!--more-->")

SummaryDivider denotes where content summarization should end. The default is "<!--more-->".

View Source
var SummaryLength = 70

SummaryLength is the length of the summary that Hugo extracts from a content.

Functions

func AddContextRoot

func AddContextRoot(baseURL, relativePath string) string

AddContextRoot adds the context root to an URL if it's not already set. For relative URL entries on sites with a base url with a context root set (i.e. http://example.com/mysite), relative URLs must not include the context root if canonifyURLs is enabled. But if it's disabled, it must be set.

func BytesToHTML

func BytesToHTML(b []byte) template.HTML

BytesToHTML converts bytes to type template.HTML.

func CompareVersion added in v0.20.1

func CompareVersion(version interface{}) int

CompareVersion compares the given version string or number against the running Hugo version. It returns -1 if the given version is less than, 0 if equal and 1 if greater than the running version.

func Deprecated

func Deprecated(object, item, alternative string, err bool)

Deprecated informs about a deprecation, but only once for a given set of arguments' values. If the err flag is enabled, it logs as an ERROR (will exit with -1) and the text will point at the next Hugo release. The idea is two remove an item in two Hugo releases to give users and theme authors plenty of time to fix their templates.

func DiffStringSlices

func DiffStringSlices(slice1 []string, slice2 []string) []string

DiffStringSlices returns the difference between two string slices. Useful in tests. See: http://stackoverflow.com/questions/19374219/how-to-find-the-difference-between-two-slices-of-strings-in-golang

func DirExists

func DirExists(path string, fs afero.Fs) (bool, error)

DirExists checks if a path exists and is a directory.

func Emojify

func Emojify(source []byte) []byte

Emojify "emojifies" the input source. Note that the input byte slice will be modified if needed. See http://www.emoji-cheat-sheet.com/

func Exists

func Exists(path string, fs afero.Fs) (bool, error)

Exists checks if a file or directory exists.

func Ext added in v0.24.1

func Ext(in string) string

Ext takes a path and returns the extension, including the delmiter, i.e. ".md".

func ExtractRootPaths

func ExtractRootPaths(paths []string) []string

ExtractRootPaths extracts the root paths from the supplied list of paths. The resulting root path will not contain any file separators, but there may be duplicates. So "/content/section/" becomes "content"

func ExtractTOC

func ExtractTOC(content []byte) (newcontent []byte, toc []byte)

ExtractTOC extracts Table of Contents from content.

func FileContains

func FileContains(filename string, subslice []byte, fs afero.Fs) (bool, error)

FileContains checks if a file contains a specified string.

func FileContainsAny

func FileContainsAny(filename string, subslices [][]byte, fs afero.Fs) (bool, error)

FileContainsAny checks if a file contains any of the specified strings.

func Filename

func Filename(in string) (name string)

Filename takes a path, strips out the extension, and returns the name of the file.

func FindAvailablePort

func FindAvailablePort() (*net.TCPAddr, error)

FindAvailablePort returns an available and valid TCP port.

func FindCWD

func FindCWD() (string, error)

FindCWD returns the current working directory from where the Hugo executable is run.

func FirstUpper

func FirstUpper(s string) string

FirstUpper returns a string with the first character as upper case.

func GetDottedRelativePath

func GetDottedRelativePath(inPath string) string

GetDottedRelativePath expects a relative path starting after the content directory. It returns a relative path with dots ("..") navigating up the path structure.

func GetRealPath

func GetRealPath(fs afero.Fs, path string) (string, error)

GetRealPath returns the real file path for the given path, whether it is a symlink or not.

func GetRelativePath

func GetRelativePath(path, base string) (final string, err error)

GetRelativePath returns the relative path of a given path.

func GetTempDir

func GetTempDir(subPath string, fs afero.Fs) string

GetTempDir returns a temporary directory with the given sub path.

func GuessSection

func GuessSection(in string) string

GuessSection returns the section given a source path. A section is the part between the root slash and the second slash or before the first slash.

func GuessType

func GuessType(in string) string

GuessType attempts to guess the type of file from a given string.

func HasAsciidoc

func HasAsciidoc() bool

HasAsciidoc returns whether Asciidoctor or Asciidoc is installed on this computer.

func HasPygments

func HasPygments() bool

HasPygments checks to see if Pygments is installed and available on the system.

func HasRst

func HasRst() bool

HasRst returns whether rst2html is installed on this computer.

func Highlight

func Highlight(cfg config.Provider, code, lang, optsStr string) string

Highlight takes some code and returns highlighted code.

func InStringArray

func InStringArray(arr []string, el string) bool

InStringArray checks if a string is an element of a slice of strings and returns a boolean value.

func InitLoggers

func InitLoggers()

InitLoggers sets up the global distinct loggers.

func IsAbsURL

func IsAbsURL(path string) bool

IsAbsURL determines whether the given path points to an absolute URL.

func IsDir

func IsDir(path string, fs afero.Fs) (bool, error)

IsDir checks if a given path is a directory.

func IsEmpty

func IsEmpty(path string, fs afero.Fs) (bool, error)

IsEmpty checks if a given path is empty.

func IsWhitespace

func IsWhitespace(r rune) bool

IsWhitespace determines if the given rune is whitespace.

func MakePermalink(host, plink string) *url.URL

MakePermalink combines base URL with content path to create full URL paths. Example

base:   http://spf13.com/
path:   post/how-i-blog
result: http://spf13.com/post/how-i-blog

func MakeTitle

func MakeTitle(inpath string) string

MakeTitle converts the path given to a suitable title, trimming whitespace and replacing hyphens with whitespace.

func Md5String

func Md5String(f string) string

Md5String takes a string and returns its MD5 hash.

func NormalizeHugoFlags

func NormalizeHugoFlags(f *pflag.FlagSet, name string) pflag.NormalizedName

NormalizeHugoFlags facilitates transitions of Hugo command-line flags, e.g. --baseUrl to --baseURL, --uglyUrls to --uglyURLs

func PathPrep

func PathPrep(ugly bool, in string) string

PathPrep prepares the path using the uglify setting to create paths on either the form /section/name/index.html or /section/name.html.

func PrettifyPath

func PrettifyPath(in string) string

PrettifyPath is the same as PrettifyURLPath but for file paths.

/section/name.html       becomes /section/name/index.html
/section/name/           becomes /section/name/index.html
/section/name/index.html becomes /section/name/index.html

func PrettifyURL

func PrettifyURL(in string) string

PrettifyURL takes a URL string and returns a semantic, clean URL.

func PrettifyURLPath

func PrettifyURLPath(in string) string

PrettifyURLPath takes a URL path to a content and converts it to enable pretty URLs.

/section/name.html       becomes /section/name/index.html
/section/name/           becomes /section/name/index.html
/section/name/index.html becomes /section/name/index.html

func ReaderContains

func ReaderContains(r io.Reader, subslice []byte) bool

ReaderContains reports whether subslice is within r.

func ReaderToBytes

func ReaderToBytes(lines io.Reader) []byte

ReaderToBytes takes an io.Reader argument, reads from it and returns bytes.

func ReaderToString

func ReaderToString(lines io.Reader) string

ReaderToString is the same as ReaderToBytes, but returns a string.

func ReplaceExtension

func ReplaceExtension(path string, newExt string) string

ReplaceExtension takes a path and an extension, strips the old extension and returns the path with the new extension.

func SafeWriteToDisk

func SafeWriteToDisk(inpath string, r io.Reader, fs afero.Fs) (err error)

SafeWriteToDisk is the same as WriteToDisk but it also checks to see if file/directory already exists.

func SanitizeURL

func SanitizeURL(in string) string

SanitizeURL sanitizes the input URL string.

func SanitizeURLKeepTrailingSlash

func SanitizeURLKeepTrailingSlash(in string) string

SanitizeURLKeepTrailingSlash is the same as SanitizeURL, but will keep any trailing slash.

func SliceToLower

func SliceToLower(s []string) []string

SliceToLower goes through the source slice and lowers all values.

func StripHTML

func StripHTML(s string) string

StripHTML accepts a string, strips out all HTML tags and returns it.

func SymbolicWalk

func SymbolicWalk(fs afero.Fs, root string, walker filepath.WalkFunc) error

SymbolicWalk is like filepath.Walk, but it supports the root being a symbolic link. It will still not follow symbolic links deeper down in the file structure

func ToLowerMap

func ToLowerMap(m map[string]interface{})

ToLowerMap makes all the keys in the given map lower cased and will do so recursively. Notes: * This will modify the map given. * Any nested map[interface{}]interface{} will be converted to map[string]interface{}.

func TotalWords

func TotalWords(s string) int

TotalWords counts instance of one or more consecutive white space characters, as defined by unicode.IsSpace, in s. This is a cheaper way of word counting than the obvious len(strings.Fields(s)).

func TruncateWordsByRune

func TruncateWordsByRune(words []string, max int) (string, bool)

TruncateWordsByRune truncates words by runes.

func TruncateWordsToWholeSentence

func TruncateWordsToWholeSentence(s string, max int) (string, bool)

TruncateWordsToWholeSentence takes content and truncates to whole sentence limited by max number of words. It also returns whether it is truncated.

func Uglify

func Uglify(in string) string

Uglify does the opposite of PrettifyURLPath().

/section/name/index.html becomes /section/name.html
/section/name/           becomes /section/name.html
/section/name.html       becomes /section/name.html

func UniqueStrings

func UniqueStrings(s []string) []string

UniqueStrings returns a new slice with any duplicates removed.

func WriteToDisk

func WriteToDisk(inpath string, r io.Reader, fs afero.Fs) (err error)

WriteToDisk writes content to disk.

Types

type BaseURL added in v0.20.1

type BaseURL struct {
	// contains filtered or unexported fields
}

A BaseURL in Hugo is normally on the form scheme://path, but the form scheme: is also valid (mailto:hugo@rules.com).

func (BaseURL) String added in v0.20.1

func (b BaseURL) String() string

func (BaseURL) URL added in v0.20.1

func (b BaseURL) URL() *url.URL

func (BaseURL) WithProtocol added in v0.20.1

func (b BaseURL) WithProtocol(protocol string) (string, error)

Protocol is normally on the form "scheme://", i.e. "webcal://".

type Blackfriday

type Blackfriday struct {
	Smartypants                      bool
	AngledQuotes                     bool
	Fractions                        bool
	HrefTargetBlank                  bool
	SmartDashes                      bool
	LatexDashes                      bool
	TaskLists                        bool
	PlainIDAnchors                   bool
	SourceRelativeLinksEval          bool
	SourceRelativeLinksProjectFolder string
	Extensions                       []string
	ExtensionsMask                   []string
}

Blackfriday holds configuration values for Blackfriday rendering.

type ContentSpec added in v0.20.1

type ContentSpec struct {
	// contains filtered or unexported fields
}

func NewContentSpec added in v0.20.1

func NewContentSpec(cfg config.Provider) *ContentSpec

func (ContentSpec) NewBlackfriday added in v0.20.1

func (c ContentSpec) NewBlackfriday() *Blackfriday

NewBlackfriday creates a new Blackfriday filled with site config or some sane defaults.

func (ContentSpec) RenderBytes added in v0.20.1

func (c ContentSpec) RenderBytes(ctx *RenderingContext) []byte

RenderBytes renders a []byte.

type DistinctLogger

type DistinctLogger struct {
	sync.RWMutex
	// contains filtered or unexported fields
}

DistinctLogger ignores duplicate log statements.

func NewDistinctErrorLogger

func NewDistinctErrorLogger() *DistinctLogger

NewDistinctErrorLogger creates a new DistinctLogger that logs ERRORs

func NewDistinctFeedbackLogger

func NewDistinctFeedbackLogger() *DistinctLogger

NewDistinctFeedbackLogger creates a new DistinctLogger that can be used to give feedback to the user while not spamming with duplicates.

func NewDistinctWarnLogger added in v0.20.1

func NewDistinctWarnLogger() *DistinctLogger

NewDistinctWarnLogger creates a new DistinctLogger that logs WARNs

func (*DistinctLogger) Printf

func (l *DistinctLogger) Printf(format string, v ...interface{})

Printf will log the string returned from fmt.Sprintf given the arguments, but not if it has been logged before. Note: A newline is appended.

func (*DistinctLogger) Println

func (l *DistinctLogger) Println(v ...interface{})

Println will log the string returned from fmt.Sprintln given the arguments, but not if it has been logged before.

type FileResolverFunc

type FileResolverFunc func(ref string) (string, error)

type HugoHTMLRenderer

type HugoHTMLRenderer struct {
	*RenderingContext
	blackfriday.Renderer
}

HugoHTMLRenderer wraps a blackfriday.Renderer, typically a blackfriday.Html Enabling Hugo to customise the rendering experience

func (*HugoHTMLRenderer) BlockCode

func (r *HugoHTMLRenderer) BlockCode(out *bytes.Buffer, text []byte, lang string)

func (*HugoHTMLRenderer) Image

func (r *HugoHTMLRenderer) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte)
func (r *HugoHTMLRenderer) Link(out *bytes.Buffer, link []byte, title []byte, content []byte)

func (*HugoHTMLRenderer) List

func (r *HugoHTMLRenderer) List(out *bytes.Buffer, text func() bool, flags int)

List adds task list support to the Blackfriday renderer.

func (*HugoHTMLRenderer) ListItem

func (r *HugoHTMLRenderer) ListItem(out *bytes.Buffer, text []byte, flags int)

ListItem adds task list support to the Blackfriday renderer.

type HugoMmarkHTMLRenderer

type HugoMmarkHTMLRenderer struct {
	mmark.Renderer
	Cfg config.Provider
}

HugoMmarkHTMLRenderer wraps a mmark.Renderer, typically a mmark.html Enabling Hugo to customise the rendering experience

func (*HugoMmarkHTMLRenderer) BlockCode

func (r *HugoMmarkHTMLRenderer) BlockCode(out *bytes.Buffer, text []byte, lang string, caption []byte, subfigure bool, callouts bool)

type HugoVersion

type HugoVersion struct {
	// Major and minor version.
	Number float32

	// Increment this for bug releases
	PatchLevel int

	// HugoVersionSuffix is the suffix used in the Hugo version string.
	// It will be blank for release versions.
	Suffix string
}

HugoVersion represents the Hugo build version.

func (HugoVersion) Next added in v0.20.3

func (v HugoVersion) Next() HugoVersion

Next returns the next Hugo release version.

func (HugoVersion) NextPatchLevel added in v0.20.3

func (v HugoVersion) NextPatchLevel(level int) HugoVersion

NextPatchLevel returns the next patch/bugfix Hugo version. This will be a patch increment on the previous Hugo version.

func (HugoVersion) Prev added in v0.20.3

func (v HugoVersion) Prev() HugoVersion

Pre returns the previous Hugo release version.

func (HugoVersion) ReleaseVersion added in v0.20.3

func (v HugoVersion) ReleaseVersion() HugoVersion

ReleaseVersion represents the release version.

func (HugoVersion) String added in v0.20.3

func (v HugoVersion) String() string

type Language

type Language struct {
	Lang         string
	LanguageName string
	Title        string
	Weight       int

	Cfg config.Provider
	// contains filtered or unexported fields
}

func NewDefaultLanguage

func NewDefaultLanguage(cfg config.Provider) *Language

func NewLanguage

func NewLanguage(lang string, cfg config.Provider) *Language

func (*Language) Get

func (l *Language) Get(key string) interface{}

Get returns a value associated with the key relying on specified language. Get is case-insensitive for a key.

Get returns an interface. For a specific value use one of the Get____ methods.

func (*Language) GetBool

func (l *Language) GetBool(key string) bool

GetBool returns the value associated with the key as a boolean.

func (*Language) GetInt

func (l *Language) GetInt(key string) int

GetInt returns the value associated with the key as an int.

func (*Language) GetString

func (l *Language) GetString(key string) string

GetString returns the value associated with the key as a string.

func (*Language) GetStringMap

func (l *Language) GetStringMap(key string) map[string]interface{}

GetStringMap returns the value associated with the key as a map of interfaces.

func (*Language) GetStringMapString

func (l *Language) GetStringMapString(key string) map[string]string

GetStringMapString returns the value associated with the key as a map of strings.

func (*Language) IsSet added in v0.20.1

func (l *Language) IsSet(key string) bool

IsSet checks whether the key is set in the language or the related config store.

func (*Language) Params

func (l *Language) Params() map[string]interface{}

func (*Language) Set added in v0.20.1

func (l *Language) Set(key string, value interface{})

Set sets the value for the key in the language's params.

func (*Language) SetParam

func (l *Language) SetParam(k string, v interface{})

SetParam sets param with the given key and value. SetParam is case-insensitive.

func (*Language) String

func (l *Language) String() string

type Languages

type Languages []*Language

func NewLanguages

func NewLanguages(l ...*Language) Languages

func (Languages) Len

func (l Languages) Len() int

func (Languages) Less

func (l Languages) Less(i, j int) bool

func (Languages) Swap

func (l Languages) Swap(i, j int)

type LinkResolverFunc

type LinkResolverFunc func(ref string) (string, error)

type PathSpec

type PathSpec struct {
	BaseURL

	// The file systems to use
	Fs *hugofs.Fs

	// The config provider to use
	Cfg config.Provider
	// contains filtered or unexported fields
}

PathSpec holds methods that decides how paths in URLs and files in Hugo should look like.

func NewPathSpec added in v0.20.1

func NewPathSpec(fs *hugofs.Fs, cfg config.Provider) (*PathSpec, error)

NewPathSpec creats a new PathSpec from the given filesystems and Language.

func (*PathSpec) AbsPathify added in v0.20.1

func (p *PathSpec) AbsPathify(inPath string) string

AbsPathify creates an absolute path if given a relative path. If already absolute, the path is just cleaned.

func (*PathSpec) AbsURL

func (p *PathSpec) AbsURL(in string, addLanguage bool) string

AbsURL creates an absolute URL from the relative path given and the BaseURL set in config.

func (*PathSpec) GetLayoutDirPath added in v0.20.1

func (p *PathSpec) GetLayoutDirPath() string

GetLayoutDirPath returns the absolute path to the layout file dir for the current Hugo project.

func (*PathSpec) GetRelativeThemeDir added in v0.20.1

func (p *PathSpec) GetRelativeThemeDir() string

GetRelativeThemeDir gets the relative root directory of the current theme, if there is one. If there is no theme, returns the empty string.

func (*PathSpec) GetStaticDirPath added in v0.20.1

func (p *PathSpec) GetStaticDirPath() string

GetStaticDirPath returns the absolute path to the static file dir for the current Hugo project.

func (*PathSpec) GetThemeDataDirPath added in v0.20.1

func (p *PathSpec) GetThemeDataDirPath() (string, error)

GetThemeDataDirPath returns the theme's data dir path if theme is set. If theme is set and the data dir doesn't exist, an error is returned.

func (*PathSpec) GetThemeDir added in v0.20.1

func (p *PathSpec) GetThemeDir() string

GetThemeDir gets the root directory of the current theme, if there is one. If there is no theme, returns the empty string.

func (*PathSpec) GetThemeI18nDirPath added in v0.20.1

func (p *PathSpec) GetThemeI18nDirPath() (string, error)

GetThemeI18nDirPath returns the theme's i18n dir path if theme is set. If theme is set and the i18n dir doesn't exist, an error is returned.

func (*PathSpec) GetThemeStaticDirPath added in v0.20.1

func (p *PathSpec) GetThemeStaticDirPath() (string, error)

GetThemeStaticDirPath returns the theme's static dir path if theme is set. If theme is set and the static dir doesn't exist, an error is returned.

func (*PathSpec) GetThemesDirPath added in v0.20.1

func (p *PathSpec) GetThemesDirPath() string

GetThemesDirPath gets the static files directory of the current theme, if there is one. Ignores underlying errors. TODO(bep) Candidate for deprecation?

func (*PathSpec) LayoutDir added in v0.20.1

func (p *PathSpec) LayoutDir() string

LayoutDir returns the relative layout dir in the currenct Hugo project.

func (*PathSpec) MakePath

func (p *PathSpec) MakePath(s string) string

MakePath takes a string with any characters and replace it so the string could be used in a path. It does so by creating a Unicode-sanitized string, with the spaces replaced, whilst preserving the original casing of the string. E.g. Social Media -> Social-Media

func (*PathSpec) MakePathSanitized

func (p *PathSpec) MakePathSanitized(s string) string

MakePathSanitized creates a Unicode-sanitized string, with the spaces replaced

func (*PathSpec) MakeStaticPathRelative added in v0.20.1

func (p *PathSpec) MakeStaticPathRelative(inPath string) (string, error)

MakeStaticPathRelative makes a relative path to the static files directory. It does so by taking either the project's static path or the theme's static path into consideration.

func (*PathSpec) PaginatePath

func (p *PathSpec) PaginatePath() string

PaginatePath returns the configured root path used for paginator pages.

func (*PathSpec) PrependBasePath added in v0.20.1

func (p *PathSpec) PrependBasePath(rel string) string

PrependBasePath prepends any baseURL sub-folder to the given resource if canonifyURLs is disabled. If canonifyURLs is set, we will globally prepend the absURL with any sub-folder, so avoid doing anything here to avoid getting double paths.

func (*PathSpec) RelURL

func (p *PathSpec) RelURL(in string, addLanguage bool) string

RelURL creates a URL relative to the BaseURL root. Note: The result URL will not include the context root if canonifyURLs is enabled.

func (PathSpec) String added in v0.20.1

func (p PathSpec) String() string

func (*PathSpec) Theme added in v0.20.1

func (p *PathSpec) Theme() string

Theme returns the theme name if set.

func (*PathSpec) ThemeSet added in v0.20.1

func (p *PathSpec) ThemeSet() bool

ThemeSet checks whether a theme is in use or not.

func (*PathSpec) URLEscape added in v0.20.1

func (p *PathSpec) URLEscape(uri string) string

URLEscape escapes unicode letters.

func (*PathSpec) URLPrep

func (p *PathSpec) URLPrep(in string) string

URLPrep applies misc sanitation to the given URL.

func (*PathSpec) URLize

func (p *PathSpec) URLize(uri string) string

URLize is similar to MakePath, but with Unicode handling Example:

uri: Vim (text editor)
urlize: vim-text-editor

func (*PathSpec) URLizeAndPrep

func (p *PathSpec) URLizeAndPrep(in string) string

URLizeAndPrep applies misc sanitation to the given URL to get it in line with the Hugo standard.

func (*PathSpec) URLizeFilename added in v0.20.1

func (p *PathSpec) URLizeFilename(filename string) string

URLizeFilename creates an URL from a filename by esacaping unicode letters and turn any filepath separator into forward slashes.

func (*PathSpec) UnicodeSanitize

func (p *PathSpec) UnicodeSanitize(s string) string

UnicodeSanitize sanitizes string to be used in Hugo URL's, allowing only a predefined set of special Unicode characters. If RemovePathAccents configuration flag is enabled, Uniccode accents are also removed.

func (*PathSpec) WorkingDir added in v0.20.1

func (p *PathSpec) WorkingDir() string

WorkingDir returns the configured workingDir.

type RenderingContext

type RenderingContext struct {
	Content      []byte
	PageFmt      string
	DocumentID   string
	DocumentName string
	Config       *Blackfriday
	RenderTOC    bool
	FileResolver FileResolverFunc
	LinkResolver LinkResolverFunc
	Cfg          config.Provider
}

RenderingContext holds contextual information, like content and configuration, for a given content rendering. By creating you must set the Config, otherwise it will panic.

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