util

Documentation

Index

• func CloseAll(closers ...io.Closer) error
• func DirEmpty(path string) bool
• func DirExists(path string) bool
• func ExitCode(err error) int
• func FileExists(path string) bool
• func ForEachLine(path string, fn func(line string) bool) error
• func Git(arg ...string) (string, error)
• func Must(err error)
• func MustReadJSONFile(filename string) *jnode.Node
• func PropagateCloseError(closer io.Closer, f func() error) (err error)
• func ReadJSONFile(filename string) (*jnode.Node, error)
• func RemoveJNodeElementsIf(n *jnode.Node, f func(*jnode.Node) bool) *jnode.Node
• func RemoveJNodeEntriesIf(n *jnode.Node, f func(key string, value *jnode.Node) bool) *jnode.Node
• func StringSliceContains(s []string, t string) bool
• func TempFile(pattern string) (string, error)
• func TruncateRight(s string, m int) string
• type Cache
  • func NewCache(max int) *Cache
  • func (c *Cache) Contains(key string) bool
  • func (c *Cache) Get(key string, fill func(string) interface{}) interface{}
  • func (c *Cache) Put(key string, v interface{})
• type StringSet
  • func NewStringSet() *StringSet
  • func NewStringSetWithValues(values []string) *StringSet
  • func (ss *StringSet) Add(s string) bool
  • func (ss *StringSet) AddAll(values ...string) *StringSet
  • func (ss *StringSet) Contains(s string) bool
  • func (ss *StringSet) Get(i int) string
  • func (ss *StringSet) Len() int
  • func (ss *StringSet) MarshalJSON() ([]byte, error)
  • func (ss *StringSet) Reset()
  • func (ss *StringSet) Values() []string

Functions

func CloseAll

func CloseAll(closers ...io.Closer) error

CloseAll calls Close() on every closer, returning the err from the first one that returns a non-nil error.

func DirEmpty

func DirEmpty(path string) bool

func DirExists

func DirExists(path string) bool

func ExitCode

func ExitCode(err error) int

Returns the exit code from an error if the error is an exec.ExitError, or -1 if the err is non-nil, or 0 otherwise.

func FileExists

func FileExists(path string) bool

func ForEachLine

func ForEachLine(path string, fn func(line string) bool) error

func Git

func Git(arg ...string) (string, error)

func Must

func Must(err error)

Must panics if err is non-nil

func MustReadJSONFile

func MustReadJSONFile(filename string) *jnode.Node

func PropagateCloseError

func PropagateCloseError(closer io.Closer, f func() error) (err error)

PropagateCloseError calls f then calls closer.Close(), returning the error from Close() if f did not return an error. Errors from Close() when writing can return important errors that should not be thrown away.

func ReadJSONFile

func ReadJSONFile(filename string) (*jnode.Node, error)

func RemoveJNodeElementsIf

func RemoveJNodeElementsIf(n *jnode.Node, f func(*jnode.Node) bool) *jnode.Node

func RemoveJNodeEntriesIf

func RemoveJNodeEntriesIf(n *jnode.Node, f func(key string, value *jnode.Node) bool) *jnode.Node

func StringSliceContains

func StringSliceContains(s []string, t string) bool

func TempFile

func TempFile(pattern string) (string, error)

func TruncateRight

func TruncateRight(s string, m int) string

Replaces newlines in s with spaces and truncates with "..." if the len(s) is more than m. The resulting string will always be m characters or less.

Types

type Cache

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

A simple-minded not-scalable LFU cache.

func NewCache

func NewCache(max int) *Cache

func (*Cache) Contains

func (c *Cache) Contains(key string) bool

func (*Cache) Get

func (c *Cache) Get(key string, fill func(string) interface{}) interface{}

func (*Cache) Put

func (c *Cache) Put(key string, v interface{})

type StringSet

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

func NewStringSet

func NewStringSet() *StringSet

func NewStringSetWithValues

func NewStringSetWithValues(values []string) *StringSet

func (*StringSet) Add

func (ss *StringSet) Add(s string) bool

Adds s to the set and returns true if the string wasn't already present

func (*StringSet) AddAll

func (ss *StringSet) AddAll(values ...string) *StringSet

func (*StringSet) Contains

func (ss *StringSet) Contains(s string) bool

func (*StringSet) Get

func (ss *StringSet) Get(i int) string

func (*StringSet) Len

func (ss *StringSet) Len() int

func (*StringSet) MarshalJSON

func (ss *StringSet) MarshalJSON() ([]byte, error)

func (*StringSet) Reset

func (ss *StringSet) Reset()

func (*StringSet) Values

func (ss *StringSet) Values() []string