Utility

package module
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 Go to latest Published: Dec 10, 2023 License: Apache-2.0 Imports: 49 Imported by: 52

README

Utility

Documentation

Index

Constants

View Source 
const (
	/*
		A JavaScript identifier must start with a letter, underscore (_), or dollar sign ($);
		subsequent characters can also be digits (0-9).
		Because JavaScript is case sensitive, letters include the characters "A"
		through "Z" (uppercase) and the characters "a" through "z" (lowercase).
	*/
	UUID_PATTERN               = "^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$"
	VARIABLE_NAME_PATTERN      = "^[a-zA-Z_$][a-zA-Z_$0-9]*$"
	PACKAGE_NAME_PATTERN       = "^[a-zA-Z_$][a-zA-Z_$0-9]*(\\.[a-zA-Z_$][a-zA-Z_$0-9]*)+(\\.[a-zA-Z_$][a-zA-Z_$0-9]*)*$"
	ENTITY_NAME_PATTERN        = "" /* 164-byte string literal not displayed */
	ISO_8601_TIME_PATTERN      = `` /* 143-byte string literal not displayed */
	ISO_8601_DATE_PATTERN      = `^(?P<year>-?(?:[1-9][0-9]*)?[0-9]{4})-(?P<month>1[0-2]|0[1-9])-(?P<day>3[01]|0[1-9]|[12][0-9])$`
	ISO_8601_DATE_TIME_PATTERN = `` /* 237-byte string literal not displayed */
	URI_BASE_64_PATTERN        = `(data:)(\\w+)(\\/)(\\w+)(;base64)`
	STD_BASE_64_PATTERN        = `^(?:[A-Za-z0-9+/]{4})+(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?$`
)

Variables

This section is empty.

Functions

func BytesToString 

func BytesToString(b []byte) string

func CallFunction 

func CallFunction(name string, params ...interface{}) (result []reflect.Value, err error)

func CallMethod 

func CallMethod(i interface{}, methodName string, params []interface{}) (interface{}, interface{})

*

  • Make use of reflexion to call the method specified in the message.

func CompressDir 

func CompressDir(src string, buf io.Writer) (int, error)

*

  • Here I will made use of tar to compress the file.

func Contains 

func Contains(slice []string, item string) bool

* Utility function *

func Copy 

func Copy(src, dst string) error

Copy the src file to dst. Any existing file will be overwritten and will not copy file attributes.

func CopyDir 

func CopyDir(source string, dest string) (err error)

*

  • I made use of cp instead of go here...
  • Be sure the command exist in the computer who run that command.

func CopyFile 

func CopyFile(source string, dest string) (err error)
func CopySymLink(source, dest string) error

func CreateDataChecksum 

func CreateDataChecksum(data []byte) string

func CreateDirIfNotExist 

func CreateDirIfNotExist(dir string) error

func CreateFileChecksum 

func CreateFileChecksum(path string) string

func CreateIfNotExists 

func CreateIfNotExists(dir string, perm os.FileMode) error

func CreateSha1Key 

func CreateSha1Key(data []byte) string

func CreateThumbnail 

func CreateThumbnail(path string, thumbnailMaxHeight int, thumbnailMaxWidth int) (string, error)

*

  • Create a thumbnail...

func DateTimeFromString 

func DateTimeFromString(str string, layout string) (time.Time, error)

func DecodeISO8859_1 

func DecodeISO8859_1(val string) (string, error)

ISO8859_1

func DecodeISO8859_10 

func DecodeISO8859_10(val string) (string, error)

ISO8859_10

func DecodeISO8859_13 

func DecodeISO8859_13(val string) (string, error)

ISO8859_13

func DecodeISO8859_14 

func DecodeISO8859_14(val string) (string, error)

ISO8859_14

func DecodeISO8859_15 

func DecodeISO8859_15(val string) (string, error)

ISO8859_15

func DecodeISO8859_16 

func DecodeISO8859_16(val string) (string, error)

ISO8859_16

func DecodeISO8859_2 

func DecodeISO8859_2(val string) (string, error)

ISO8859_2

func DecodeISO8859_3 

func DecodeISO8859_3(val string) (string, error)

ISO8859_3

func DecodeISO8859_4 

func DecodeISO8859_4(val string) (string, error)

ISO8859_4

func DecodeISO8859_5 

func DecodeISO8859_5(val string) (string, error)

ISO8859_5

func DecodeISO8859_6 

func DecodeISO8859_6(val string) (string, error)

ISO8859_6

func DecodeISO8859_7 

func DecodeISO8859_7(val string) (string, error)

ISO8859_7

func DecodeISO8859_8 

func DecodeISO8859_8(val string) (string, error)

ISO8859_8

func DecodeISO8859_9 

func DecodeISO8859_9(val string) (string, error)

ISO8859_9

func DecodeKOI8R 

func DecodeKOI8R(val string) (string, error)

KOI8R

func DecodeKOI8U 

func DecodeKOI8U(val string) (string, error)

KOI8U

func DecodeWindows1250 

func DecodeWindows1250(val string) (string, error)

Windows1250

func DecodeWindows1251 

func DecodeWindows1251(val string) (string, error)

Windows1251

func DecodeWindows1252 

func DecodeWindows1252(val string) (string, error)

Windows1252

func DecodeWindows1253 

func DecodeWindows1253(val string) (string, error)

Windows1253

func DecodeWindows1254 

func DecodeWindows1254(val string) (string, error)

Windows1254

func DecodeWindows1255 

func DecodeWindows1255(val string) (string, error)

Windows1255

func DecodeWindows1256 

func DecodeWindows1256(val string) (string, error)

Windows1256

func DecodeWindows1257 

func DecodeWindows1257(val string) (string, error)

Windows1257

func DecodeWindows1258 

func DecodeWindows1258(val string) (string, error)

Windows1258

func DomainHasIp 

func DomainHasIp(domain string, ip string) bool

func DownloadFile 

func DownloadFile(URL, fileName string) error

*

  • Download an image from an url...

func Exists 

func Exists(filePath string) bool

Exists reports whether the named file or directory exists.

func ExtractTarGz 

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

*

  • Extract a tar gz file and return the path where the data is...

func FileLine 

func FileLine() string

func FindFileByName 

func FindFileByName(path string, name string) ([]string, error)

func FromBytes 

func FromBytes(data []byte, typeName string) (interface{}, error)

*

  • Read entity from byte array.

func FunctionName 

func FunctionName() string

func GenerateUUID 

func GenerateUUID(val string) string

Create a MD5 hash value with UUID format.

func GetChecksum 

func GetChecksum(values interface{}) string

*

  • Recursive function that return the checksum value.

func GetEnvironmentVariable 

func GetEnvironmentVariable(key string) (string, error)

func GetExecName 

func GetExecName(path string) string

func GetFileContentType 

func GetFileContentType(out *os.File) (string, error)

*

  • Get the mime type of a file.

func GetFilePathsByExtension 

func GetFilePathsByExtension(path string, extension string) []string

*

  • Keep the parent node

func GetFunction 

func GetFunction(name string) interface{}

*

  • Get a function from it name.

func GetInstanceOf 

func GetInstanceOf(typeName string) interface{}

*

  • Return a new instance of a given typename

func GetIpv4 

func GetIpv4(address string) (string, error)

Get the ip from an address

func GetMD5Hash 

func GetMD5Hash(text string) string

func GetPrimaryIPAddress 

func GetPrimaryIPAddress() (string, error)

*

  • Return the primary ip address of the computer.

func GetProcessIdsByName 

func GetProcessIdsByName(name string) ([]int, error)

*

  • Get the list of process id by it name.

func GetProcessRunningStatus 

func GetProcessRunningStatus(pid int) (*os.Process, error)

check if the process is actually running However, on Unix systems, os.FindProcess always succeeds and returns a Process for the given pid...regardless of whether the process exists or not.

func GetProperty 

func GetProperty(i interface{}, field string) interface{}

func GetTypeOf 

func GetTypeOf(typeName string) reflect.Type

func GetVideoDuration 

func GetVideoDuration(path string) int

func GetWindowsEnvironmentVariable 

func GetWindowsEnvironmentVariable(key string) (string, error)

func InitializeArray 

func InitializeArray(data []interface{}) (reflect.Value, error)

*

  • Initialyse an array of values other than structure...

func InitializeBaseTypeValue 

func InitializeBaseTypeValue(t reflect.Type, value interface{}) reflect.Value

*

  • Initialyse base type value.

func InitializeStructure 

func InitializeStructure(data map[string]interface{}, setEntity func(interface{})) (reflect.Value, error)

*

  • Initialyse a single object from it value.

func InitializeStructureFieldArrayValue 

func InitializeStructureFieldArrayValue(slice reflect.Value, fieldName string, fieldType reflect.Type, values reflect.Value, setEntity func(interface{}))

Return an initialyse field value.

func InitializeStructures 

func InitializeStructures(data []interface{}, typeName string, setEntity func(interface{})) (reflect.Value, error)

*

  • Initialyse an array of structures, return it as interface (array of the actual
  • objects)

func InsertBoolAt 

func InsertBoolAt(pos int, val bool, arr *[]bool)

func InsertInt64At 

func InsertInt64At(pos int, val int64, arr *[]int64)

func InsertIntAt 

func InsertIntAt(pos int, val int, arr *[]int)

func InsertStringAt 

func InsertStringAt(pos int, str string, arr *[]string)

*

  • Insert a new string at a given position.

func IsBool 

func IsBool(value interface{}) bool

func IsCreditCardNumber 

func IsCreditCardNumber(number string) bool

func IsEmail 

func IsEmail(email string) bool

func IsEmpty 

func IsEmpty(name string) (bool, error)

func IsLocal 

func IsLocal(hostname string) bool

func IsNumeric 

func IsNumeric(value interface{}) bool

func IsPhoneNumber 

func IsPhoneNumber(number string) bool

func IsStdBase64 

func IsStdBase64(str string) bool

Determine if a string is a valid base64 string

func IsUriBase64 

func IsUriBase64(str string) bool

func IsUuid 

func IsUuid(uuidStr string) bool

Determine if a string is a UUID or not, a uuid is compose of a TypeName%UUID

func IsValidEntityReferenceName 

func IsValidEntityReferenceName(entityReferenceName string) bool

Determine if a string is a valid entity reference name

func IsValidPackageName 

func IsValidPackageName(packageName string) bool

Determine if a string is a valid package name

func IsValidVariableName 

func IsValidVariableName(variableName string) bool

Determine if a string is a valid variable name

func JsonErrorStr 

func JsonErrorStr(functionName string, fileLine string, err error) string

func KillProcessByName 

func KillProcessByName(name string) error

*

  • Kill a process with a given name.

func Less 

func Less(val0 interface{}, val1 interface{}) bool

func Log 

func Log(infos ...interface{})

func MakeInstance 

func MakeInstance(typeName string, data map[string]interface{}, setEntity func(interface{})) reflect.Value

*

  • Create an instance of the type with it name.

func MakeTimestamp 

func MakeTimestamp() int64

func MatchISO8601_Date 

func MatchISO8601_Date(str string) (*time.Time, error)

func MatchISO8601_DateTime 

func MatchISO8601_DateTime(str string) (*time.Time, error)

*

  • Parse and return a time object from a 8601 iso string, the time zone is
  • the UTC.

func MatchISO8601_Time 

func MatchISO8601_Time(str string) (*time.Time, error)

*

  • Parse and return a time object from a 8601 iso string, the time zone is
  • the UTC.

func Move 

func Move(source string, dest string) (err error)

*

  • I made use of mv instead of go here...
  • Be sure the command exist in the computer who run that command.

func MoveFile 

func MoveFile(source, destination string) (err error)

func MyIP 

func MyIP() string

Return the external ip.

func MyIPv6 

func MyIPv6() (string, error)

func MyLocalIP 

func MyLocalIP(mac string) (string, error)

*

  • Return the ip address with the given mac address.

func MyMacAddr 

func MyMacAddr(ip string) (string, error)

getMacAddr gets the MAC hardware address of the host machine

func OpenBrowser 

func OpenBrowser(url string)

* Open the browser at given url *

func PidExists 

func PidExists(pid int) (bool, error)

func Ping 

func Ping(domain string) error

func PrettyPrint 

func PrettyPrint(b []byte) ([]byte, error)

Pretty print the result.

func RandomUUID 

func RandomUUID() string

Create a random uuid value.

func ReadDir 

func ReadDir(dirname string) ([]os.FileInfo, error)

func ReadMetadata 

func ReadMetadata(path string) (map[string]interface{}, error)

*

  • Read movie file metadata...

func ReadOutput 

func ReadOutput(output chan string, rc io.ReadCloser)

*

  • Read output and send it to a channel.

func RegisterFunction 

func RegisterFunction(name string, fct interface{})

*

  • Register a Go function to be able to call it dynamically latter.

func RegisterType 

func RegisterType(typedNil interface{})

*

  • Register an instance of the type.

func Remove 

func Remove(s []string, index int) ([]string, error)

func RemoveAccent 

func RemoveAccent(text string) string

func RemoveContents 

func RemoveContents(dir string) error

func RemoveDirContents 

func RemoveDirContents(dir string) error

func RemoveString 

func RemoveString(s []string, r string) []string

func Round 

func Round(x float64, n int) float64

func RunCmd 

func RunCmd(name, dir string, args []string, wait chan error)

func SetEnvironmentVariable 

func SetEnvironmentVariable(key string, value string) error

func SetMetadata 

func SetMetadata(path, key, value string) error

*

  • Store meta data into a file.

func SetProperty 

func SetProperty(i interface{}, field string, value interface{}) error

func SetWindowsEnvironmentVariable 

func SetWindowsEnvironmentVariable(key string, value string) error

Need a special function to get access to system variables.

func StringToBytes 

func StringToBytes(s string) []byte

func SvgToPng 

func SvgToPng(input, output string, w, h int) error

func TerminateProcess 

func TerminateProcess(pid int, exitcode int) error

Terminate process.

func ToBool 

func ToBool(value interface{}) bool

func ToBytes 

func ToBytes(val interface{}) ([]byte, error)

*

  • Serialyse the entity to a byte array.

func ToInt 

func ToInt(value interface{}) int

func ToJson 

func ToJson(obj interface{}) (string, error)

func ToMap 

func ToMap(in interface{}) (map[string]interface{}, error)

ToMap converts a struct to a map using the struct's tags.

ToMap uses tags on struct fields to decide which fields to add to the returned map.

func ToNumeric 

func ToNumeric(value interface{}) float64

func ToString 

func ToString(value interface{}) string

*

  • Convert a numerical value to a string.

func UnsetEnvironmentVariable 

func UnsetEnvironmentVariable(key string) error

func UnsetWindowsEnvironmentVariable 

func UnsetWindowsEnvironmentVariable(key string) error

func WriteStringToFile 

func WriteStringToFile(filepath, s string) error

Write a string to a given file.

Types

type Element 

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

type IPInfo 

type IPInfo struct {
	// IP holds the described IP address.
	IP string
	// Hostname holds a DNS name associated with the IP address.
	Hostname string
	// City holds the city of the ISP location.
	City string
	// Country holds the two-letter country code.
	Country string
	// Loc holds the latitude and longitude of the
	// ISP location as a comma-separated northing, easting
	// pair of floating point numbers.
	Loc string
	// Org describes the organization that is
	// responsible for the IP address.
	Org string
	// Postal holds the post code or zip code region of the ISP location.
	Postal string
}

IPInfo describes a particular IP address.

func ForeignIP 

func ForeignIP(ip string) (*IPInfo, error)

ForeignIP provides information about the given IP address, which should be in dotted-quad form.

type Referenceable 

type Referenceable interface {
	GetUUID() string
}

*

  • Use it to get UUID of referenceable object.

type Stack 

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

func (*Stack) Len 

func (s *Stack) Len() int

Return the stack's length

func (*Stack) Pop 

func (s *Stack) Pop() (value map[string]interface{})

Remove the top element from the stack and return it's value If the stack is empty, return nil

func (*Stack) Push 

func (s *Stack) Push(value map[string]interface{})

Push a new element onto the stack

type TypeManager 

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

type Version 

type Version struct {
	Major      int
	Minor      int
	Patch      int
	PreRelease string
}

Base on https://go.dev/doc/modules/version-numbers for version number

func NewVersion 

func NewVersion(str string) *Version

func (*Version) Compare 

func (v *Version) Compare(to *Version) int

Compare tow version, 1 means v is newer than to, 0 is the same, -1 is older.

func (*Version) Parse 

func (v *Version) Parse(str string)

Parse values from string

func (*Version) ToString 

func (v *Version) ToString() string

Stringnify the vesion.

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