helpers

package
v0.12.0-rc4 Latest Latest
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 Go to latest Published: Nov 30, 2021 License: Apache-2.0 Imports: 42 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()
)
View Source 
var ErrThemeUndefined = errors.New("no theme set")

ErrThemeUndefined is returned when a theme has not be defined by the user.

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

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

Functions

func AddTrailingSlash 

func AddTrailingSlash(path string) string

AddTrailingSlash adds a trailing Unix styled slash (/) if not already there.

func BytesToHTML 

func BytesToHTML(b []byte) template.HTML

BytesToHTML converts bytes to type template.HTML.

func Deprecated 

func Deprecated(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 DirExists 

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

DirExists checks if a path exists and is a directory.

func Emoji 

func Emoji(key string) []byte

Emoji returns the emojy given a key, e.g. ":smile:", nil if not found.

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 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 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 GetCacheDir 

func GetCacheDir(fs afero.Fs, cfg config.Provider) (string, error)

GetCacheDir returns a cache dir from the given filesystem and config. The dir will be created if it does not exist.

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 GetTempDir 

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

GetTempDir returns a temporary directory with the given sub path.

func GetTitleFunc 

func GetTitleFunc(style string) func(s string) string

GetTitleFunc returns a func that can be used to transform a string to title case.

The supported styles are

- "Go" (strings.Title) - "AP" (see https://www.apstylebook.com/) - "Chicago" (see http://www.chicagomanualofstyle.org/home.html)

If an unknown or empty style is provided, AP style is what you get.

func HasStringsPrefix 

func HasStringsPrefix(s, prefix []string) bool

HasStringsPrefix tests whether the string slice s begins with prefix slice s.

func HasStringsSuffix 

func HasStringsSuffix(s, suffix []string) bool

HasStringsSuffix tests whether the string slice s ends with suffix slice s.

func HashString 

func HashString(elements ...interface{}) string

HashString returns a hash from the given elements. It will panic if the hash cannot be calculated.

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 resets the global distinct loggers.

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 LstatIfPossible 

func LstatIfPossible(fs afero.Fs, path string) (os.FileInfo, error)

LstatIfPossible can be used to call Lstat if possible, else Stat.

func MD5FromFileFast 

func MD5FromFileFast(r io.ReadSeeker) (string, error)

MD5FromFileFast creates a MD5 hash from the given file. It only reads parts of the file for speed, so don't use it if the files are very subtly different. It will not close the file.

func MD5FromReader 

func MD5FromReader(r io.Reader) (string, error)

MD5FromReader creates a MD5 hash from the given reader.

func MD5String 

func MD5String(f string) string

MD5String takes a string and returns its MD5 hash.

func MakeTitle 

func MakeTitle(inpath string) string

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

func NewDistinctErrorLogger 

func NewDistinctErrorLogger() loggers.Logger

NewDistinctErrorLogger creates a new DistinctLogger that logs ERRORs

func NewDistinctLogger 

func NewDistinctLogger(logger loggers.Logger) loggers.Logger

NewDistinctLogger creates a new DistinctLogger that logs to the provided logger.

func NewDistinctWarnLogger 

func NewDistinctWarnLogger() loggers.Logger

NewDistinctWarnLogger creates a new DistinctLogger that logs WARNs

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 OpenFileForWriting 

func OpenFileForWriting(fs afero.Fs, filename string) (afero.File, error)

OpenFileForWriting opens or creates the given file. If the target directory does not exist, it gets created.

func OpenFilesForWriting 

func OpenFilesForWriting(fs afero.Fs, filenames ...string) (io.WriteCloser, error)

OpenFilesForWriting opens all the given filenames for writing.

func PrintFs 

func PrintFs(fs afero.Fs, path string, w io.Writer) error

PrintFs prints the given filesystem to the given writer starting from the given path. This is useful for debugging.

func ProcessingStatsTable 

func ProcessingStatsTable(w io.Writer, stats ...*ProcessingStats)

ProcessingStatsTable writes a table-formatted representation of stats to w.

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, error)

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

func ReaderToString 

func ReaderToString(lines io.Reader) (string, error)

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

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 hugofs.WalkFunc) error

SymbolicWalk is like filepath.Walk, but it follows symbolic links.

func ToSlashTrimLeading 

func ToSlashTrimLeading(s string) string

ToSlashTrimLeading is just a filepath.ToSlaas with an added / prefix trimmer.

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 UniqueStrings 

func UniqueStrings(s []string) []string

UniqueStrings returns a new slice with any duplicates removed.

func UniqueStringsReuse 

func UniqueStringsReuse(s []string) []string

UniqueStringsReuse returns a slice with any duplicates removed. It will modify the input slice.

func UniqueStringsSorted 

func UniqueStringsSorted(s []string) []string

UniqueStringsReuse returns a sorted slice with any duplicates removed. It will modify the input slice.

func WriteToDisk 

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

WriteToDisk writes content to disk.

Types

type ContentSpec 

type ContentSpec struct {
	Converters       markup.ConverterProvider
	MardownConverter converter.Converter // Markdown converter with no document context

	BuildFuture  bool
	BuildExpired bool
	BuildDrafts  bool

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

ContentSpec provides functionality to render markdown content.

func NewContentSpec 

func NewContentSpec(cfg config.Provider, logger loggers.Logger, contentFs afero.Fs) (*ContentSpec, error)

NewContentSpec returns a ContentSpec initialized with the appropriate fields from the given config.Provider.

func (*ContentSpec) RenderMarkdown 

func (c *ContentSpec) RenderMarkdown(src []byte) ([]byte, error)

func (*ContentSpec) ResolveMarkup 

func (c *ContentSpec) ResolveMarkup(in string) string

func (*ContentSpec) SanitizeAnchorName 

func (c *ContentSpec) SanitizeAnchorName(s string) string

func (*ContentSpec) TrimShortHTML 

func (c *ContentSpec) TrimShortHTML(input []byte) []byte

TrimShortHTML removes the <p>/</p> tags from HTML input in the situation where said tags are the only <p> tags in the input and enclose the content of the input (whitespace excluded).

func (*ContentSpec) TruncateWordsByRune 

func (c *ContentSpec) TruncateWordsByRune(in []string) (string, bool)

TruncateWordsByRune truncates words by runes.

func (*ContentSpec) TruncateWordsToWholeSentence 

func (c *ContentSpec) TruncateWordsToWholeSentence(s string) (string, bool)

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

type DistinctLogger 

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

DistinctLogger ignores duplicate log statements.

func (*DistinctLogger) Debugf added in v0.9.0 

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

func (*DistinctLogger) Debugln added in v0.9.0 

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

func (*DistinctLogger) Errorf added in v0.9.0 

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

func (*DistinctLogger) Errorln added in v0.9.0 

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

func (*DistinctLogger) Infof added in v0.9.0 

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

func (*DistinctLogger) Infoln added in v0.9.0 

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

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.

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.

func (*DistinctLogger) Reset 

func (l *DistinctLogger) Reset()

func (*DistinctLogger) Warnf added in v0.9.0 

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

func (*DistinctLogger) Warnln added in v0.9.0 

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

type LogPrinter 

type LogPrinter interface {
	// Println is the only common method that works in all of JWWs loggers.
	Println(a ...interface{})
}

LogPrinter is the common interface of the JWWs loggers.

type NamedSlice 

type NamedSlice struct {
	Name  string
	Slice []string
}

func ExtractAndGroupRootPaths 

func ExtractAndGroupRootPaths(paths []string) []NamedSlice

func (NamedSlice) String 

func (n NamedSlice) String() string

type PathSpec 

type PathSpec struct {
	*paths.Paths
	*filesystems.BaseFs

	ProcessingStats *ProcessingStats

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

	// The config provider to use
	Cfg config.Provider
}

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

func NewPathSpec 

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

NewPathSpec creates a new PathSpec from the given filesystems and language.

func NewPathSpecWithBaseBaseFsProvided 

func NewPathSpecWithBaseBaseFsProvided(fs *hugofs.Fs, cfg config.Provider, logger loggers.Logger, baseBaseFs *filesystems.BaseFs) (*PathSpec, error)

NewPathSpecWithBaseBaseFsProvided creats a new PathSpec from the given filesystems and language. If an existing BaseFs is provided, parts of that is reused.

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) 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) MakePathsSanitized 

func (p *PathSpec) MakePathsSanitized(paths []string)

MakePathsSanitized applies MakePathSanitized on every item in the slice

func (*PathSpec) PermalinkForBaseURL 

func (p *PathSpec) PermalinkForBaseURL(link, baseURL string) string

PermalinkForBaseURL creates a permalink from the given link and baseURL.

func (*PathSpec) PrependBasePath 

func (p *PathSpec) PrependBasePath(rel string, isAbs bool) string

PrependBasePath prepends any baseURL sub-folder to the given resource

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) URLEscape 

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 

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

URLizeFilename creates an URL from a filename by escaping 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, Unicode accents are also removed. Spaces will be replaced with a single hyphen, and sequential hyphens will be reduced to one.

type ProcessingStats 

type ProcessingStats struct {
	Name string

	Pages           uint64
	PaginatorPages  uint64
	Static          uint64
	ProcessedImages uint64
	Files           uint64
	Aliases         uint64
	Sitemaps        uint64
	Cleaned         uint64
}

ProcessingStats represents statistics about a site build.

func NewProcessingStats 

func NewProcessingStats(name string) *ProcessingStats

NewProcessingStats returns a new ProcessingStats instance.

func (*ProcessingStats) Add 

func (s *ProcessingStats) Add(counter *uint64, amount int)

Add adds an amount to a given counter.

func (*ProcessingStats) Incr 

func (s *ProcessingStats) Incr(counter *uint64)

Incr increments a given counter.

func (*ProcessingStats) Table 

func (s *ProcessingStats) Table(w io.Writer)

Table writes a table-formatted representation of the stats in a ProcessingStats instance to w.

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