ioutils

Documentation

Index

• Constants
• func DelTempFile(f *os.File) Error
• func GetTempFilePath(f *os.File) string
• func NewBufferReadCloser(b *bytes.Buffer) io.ReadCloser
• func NewTempFile() (*os.File, Error)
• func PathCheckCreate(isFile bool, path string, permFile os.FileMode, permDir os.FileMode) error
• func SystemFileDescriptor(newValue int) (current int, max int, err Error)
• type FileProgress
  • func NewFileProgress(file *os.File) FileProgress
  • func NewFileProgressPathMode(filepath string, mode int, perm os.FileMode) (FileProgress, liberr.Error)
  • func NewFileProgressPathOpen(filepath string) (FileProgress, liberr.Error)
  • func NewFileProgressPathRead(filepath string, perm os.FileMode) (FileProgress, liberr.Error)
  • func NewFileProgressPathWrite(filepath string, create, overwrite bool, perm os.FileMode) (FileProgress, liberr.Error)
  • func NewFileProgressTemp() (FileProgress, liberr.Error)
• type IOWrapper
  • func NewIOWrapper(ioInput interface{}) *IOWrapper
  • func (w IOWrapper) Close() error
  • func (w IOWrapper) Read(p []byte) (n int, err error)
  • func (w IOWrapper) Seek(offset int64, whence int) (int64, error)
  • func (w *IOWrapper) SetWrapper(read func(p []byte) []byte, write func(p []byte) []byte)
  • func (w IOWrapper) Write(p []byte) (n int, err error)

Constants

const (
	ErrorParamEmpty liberr.CodeError = iota + liberr.MinPkgIOUtils
	ErrorSyscallRLimitGet
	ErrorSyscallRLimitSet
	ErrorIOFileStat
	ErrorIOFileSeek
	ErrorIOFileOpen
	ErrorIOFileTempNew
	ErrorIOFileTempClose
	ErrorIOFileTempRemove
	ErrorNilPointer
)

Functions

func DelTempFile

func DelTempFile(f *os.File) Error

func GetTempFilePath

func GetTempFilePath(f *os.File) string

func NewBufferReadCloser

func NewBufferReadCloser(b *bytes.Buffer) io.ReadCloser

func NewTempFile

func NewTempFile() (*os.File, Error)

func PathCheckCreate

func PathCheckCreate(isFile bool, path string, permFile os.FileMode, permDir os.FileMode) error

func SystemFileDescriptor

func SystemFileDescriptor(newValue int) (current int, max int, err Error)

*

• SystemFileDescriptor is returning current Limit & max system limit for file descriptor (open file or I/O resource) currently set in the system
• This function return the current setting (current number of file descriptor and the max value) if the newValue given is zero
• Otherwise if the newValue is more than the current system limit, try to change the current limit in the system for this process only *
• For Windows build, please follow this note :
• 1) install package gcc-multilib gcc-mingw-w64 to build C source with GCC
• you will having this binaries
• - i686-w64-mingw32* for 32-bit Windows;
• - x86_64-w64-mingw32* for 64-bit Windows.
• locate you binaries gcc mingw path and note it:
• - win32 : updatedb && locate i686-w64-mingw32-gcc
• - win64 : updatedb && locate x86_64-w64-mingw32-gcc
• 2) if you have an error in the build, or if the .o object file is not present in golib/njg-ioutils/maxstdio/, run this step
• - go to golib/njg-ioutils/maxstdio folder
• - gcc -c maxstdio.c
• 3) for Win32 use this env var in prefix of your go build command (recommend to use -a flag) :
• CC=/usr/bin/i686-w64-mingw32-gcc CGO_ENABLED=1 GOOS=windows GOARCH=amd64 go build -a -v ...
• 4) for win64 use this env var in prefix of your go build command (recommend to use -a flag) :
• CC=/usr/bin/x86_64-w64-mingw32-gcc CGO_ENABLED=1 GOOS=windows GOARCH=amd64 go build -a -v ... *
• Normally no problem will be result in the build.

Types

type FileProgress

type FileProgress interface {
	io.ReadCloser
	io.ReadSeeker
	io.ReadWriteCloser
	io.ReadWriteSeeker
	io.WriteCloser
	io.WriteSeeker
	io.Reader
	io.ReaderFrom
	io.ReaderAt
	io.Writer
	io.WriterAt
	io.WriterTo
	io.Seeker
	io.StringWriter
	io.Closer

	GetByteReader() io.ByteReader
	GetByteWriter() io.ByteWriter

	SetContext(ctx context.Context)
	SetIncrement(increment func(size int64))
	SetFinish(finish func())
	SetReset(reset func(size, current int64))
	ResetMax(max int64)

	FilePath() string
	FileStat() (os.FileInfo, liberr.Error)

	SizeToEOF() (size int64, err liberr.Error)

	NewFilePathMode(filepath string, mode int, perm os.FileMode) (FileProgress, liberr.Error)
	NewFilePathWrite(filepath string, create, overwrite bool, perm os.FileMode) (FileProgress, liberr.Error)
	NewFilePathRead(filepath string, perm os.FileMode) (FileProgress, liberr.Error)
	NewFileTemp() (FileProgress, liberr.Error)

	CloseNoClean() error
}

func NewFileProgress

func NewFileProgress(file *os.File) FileProgress

func NewFileProgressPathMode

func NewFileProgressPathMode(filepath string, mode int, perm os.FileMode) (FileProgress, liberr.Error)

func NewFileProgressPathOpen

func NewFileProgressPathOpen(filepath string) (FileProgress, liberr.Error)

func NewFileProgressPathRead

func NewFileProgressPathRead(filepath string, perm os.FileMode) (FileProgress, liberr.Error)

func NewFileProgressPathWrite

func NewFileProgressPathWrite(filepath string, create, overwrite bool, perm os.FileMode) (FileProgress, liberr.Error)

func NewFileProgressTemp

func NewFileProgressTemp() (FileProgress, liberr.Error)

type IOWrapper

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

func NewIOWrapper

func NewIOWrapper(ioInput interface{}) *IOWrapper

func (IOWrapper) Close

func (w IOWrapper) Close() error

func (IOWrapper) Read

func (w IOWrapper) Read(p []byte) (n int, err error)

func (IOWrapper) Seek

func (w IOWrapper) Seek(offset int64, whence int) (int64, error)

func (*IOWrapper) SetWrapper

func (w *IOWrapper) SetWrapper(read func(p []byte) []byte, write func(p []byte) []byte)

func (IOWrapper) Write

func (w IOWrapper) Write(p []byte) (n int, err error)