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v0.1.1-beta Latest Latest
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 Go to latest Published: Sep 26, 2016 License: Apache-2.0 Imports: 21 Imported by: 0

Documentation

Overview

nash provides the execution engine

Index

Constants

View Source 
const (
	StringType objType = iota + 1
	FnType
	ListType
)
View Source 
const (
	ESuccess    StatusCode = 0
	ENotFound              = 127
	ENotStarted            = 255
)

Variables

This section is empty.

Functions

This section is empty.

Types

type AppendFn 

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

func NewAppendFn 

func NewAppendFn(env *Shell) *AppendFn

func (*AppendFn) ArgNames 

func (appendfn *AppendFn) ArgNames() []string

func (*AppendFn) Name 

func (appendfn *AppendFn) Name() string

func (*AppendFn) Results 

func (appendfn *AppendFn) Results() *Obj

func (*AppendFn) SetArgs 

func (appendfn *AppendFn) SetArgs(args []ast.Expr, envShell *Shell) error

func (*AppendFn) SetEnviron 

func (appendfn *AppendFn) SetEnviron(env []string)

func (*AppendFn) SetStderr 

func (appendfn *AppendFn) SetStderr(w io.Writer)

func (*AppendFn) SetStdin 

func (appendfn *AppendFn) SetStdin(r io.Reader)

func (*AppendFn) SetStdout 

func (appendfn *AppendFn) SetStdout(w io.Writer)

func (*AppendFn) Start 

func (appendfn *AppendFn) Start() error

func (*AppendFn) Stderr 

func (appendfn *AppendFn) Stderr() io.Writer

func (*AppendFn) Stdin 

func (appendfn *AppendFn) Stdin() io.Reader

func (*AppendFn) Stdout 

func (appendfn *AppendFn) Stdout() io.Writer

func (*AppendFn) StdoutPipe 

func (appendfn *AppendFn) StdoutPipe() (io.ReadCloser, error)

func (*AppendFn) String 

func (appendfn *AppendFn) String() string

func (*AppendFn) Wait 

func (appendfn *AppendFn) Wait() error

type ChdirFn 

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

func NewChdir 

func NewChdir(env *Shell) *ChdirFn

func (*ChdirFn) ArgNames 

func (chdir *ChdirFn) ArgNames() []string

func (*ChdirFn) Name 

func (chdir *ChdirFn) Name() string

func (*ChdirFn) Results 

func (chdir *ChdirFn) Results() *Obj

func (*ChdirFn) SetArgs 

func (chdir *ChdirFn) SetArgs(args []ast.Expr, envShell *Shell) error

func (*ChdirFn) SetEnviron 

func (chdir *ChdirFn) SetEnviron(env []string)

func (*ChdirFn) SetStderr 

func (chdir *ChdirFn) SetStderr(w io.Writer)

func (*ChdirFn) SetStdin 

func (chdir *ChdirFn) SetStdin(r io.Reader)

func (*ChdirFn) SetStdout 

func (chdir *ChdirFn) SetStdout(w io.Writer)

func (*ChdirFn) Start 

func (chdir *ChdirFn) Start() error

func (*ChdirFn) Stderr 

func (chdir *ChdirFn) Stderr() io.Writer

func (*ChdirFn) Stdin 

func (chdir *ChdirFn) Stdin() io.Reader

func (*ChdirFn) Stdout 

func (chdir *ChdirFn) Stdout() io.Writer

func (*ChdirFn) StdoutPipe 

func (chdir *ChdirFn) StdoutPipe() (io.ReadCloser, error)

func (*ChdirFn) String 

func (chdir *ChdirFn) String() string

func (*ChdirFn) Wait 

func (chdir *ChdirFn) Wait() error

type Cmd 

type Cmd struct {
	*exec.Cmd
	// contains filtered or unexported fields
}

Cmd is a nash command. It has maps of input and output file descriptors that can be set by SetInputfd and SetOutputfd. This can be used to pipe execution of Cmd commands.

func NewCmd 

func NewCmd(name string) (*Cmd, error)

func (*Cmd) Args 

func (c *Cmd) Args() []ast.Expr

func (*Cmd) Results 

func (c *Cmd) Results() *Obj

func (*Cmd) SetArgs 

func (c *Cmd) SetArgs(nodeArgs []ast.Expr, envShell *Shell) error

func (*Cmd) SetEnviron 

func (c *Cmd) SetEnviron(env []string)

func (*Cmd) SetStderr 

func (c *Cmd) SetStderr(err io.Writer)

func (*Cmd) SetStdin 

func (c *Cmd) SetStdin(in io.Reader)

func (*Cmd) SetStdout 

func (c *Cmd) SetStdout(out io.Writer)

func (*Cmd) Start 

func (c *Cmd) Start() error

func (*Cmd) Stderr 

func (c *Cmd) Stderr() io.Writer

func (*Cmd) Stdin 

func (c *Cmd) Stdin() io.Reader

func (*Cmd) Stdout 

func (c *Cmd) Stdout() io.Writer

func (*Cmd) Wait 

func (c *Cmd) Wait() error

type Env 

type Env map[string]*Obj

Env is the environment map of lists

type Fn 

type Fn interface {
	Name() string
	ArgNames() []string

	Runner

	String() string
}

type Fns 

type Fns map[string]Fn

type LenFn 

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

func NewLenFn 

func NewLenFn(env *Shell) *LenFn

func (*LenFn) ArgNames 

func (lenfn *LenFn) ArgNames() []string

func (*LenFn) Name 

func (lenfn *LenFn) Name() string

func (*LenFn) Results 

func (lenfn *LenFn) Results() *Obj

func (*LenFn) SetArgs 

func (lenfn *LenFn) SetArgs(args []ast.Expr, envShell *Shell) error

func (*LenFn) SetEnviron 

func (lenfn *LenFn) SetEnviron(env []string)

func (*LenFn) SetStderr 

func (lenfn *LenFn) SetStderr(w io.Writer)

func (*LenFn) SetStdin 

func (lenfn *LenFn) SetStdin(r io.Reader)

func (*LenFn) SetStdout 

func (lenfn *LenFn) SetStdout(w io.Writer)

func (*LenFn) Start 

func (lenfn *LenFn) Start() error

func (*LenFn) Stderr 

func (lenfn *LenFn) Stderr() io.Writer

func (*LenFn) Stdin 

func (lenfn *LenFn) Stdin() io.Reader

func (*LenFn) Stdout 

func (lenfn *LenFn) Stdout() io.Writer

func (*LenFn) StdoutPipe 

func (lenfn *LenFn) StdoutPipe() (io.ReadCloser, error)

func (*LenFn) String 

func (lenfn *LenFn) String() string

func (*LenFn) Wait 

func (lenfn *LenFn) Wait() error

type LogFn 

type LogFn func(format string, args ...interface{})

LogFn is the logger type

func NewLog 

func NewLog(ns string, enable bool) LogFn

NewLog creates a new nash logger

type Obj 

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

func NewFnObj 

func NewFnObj(val Fn) *Obj

func NewListObj 

func NewListObj(val []*Obj) *Obj

func NewStrObj 

func NewStrObj(val string) *Obj

func (Obj) Fn 

func (o Obj) Fn() Fn

func (Obj) List 

func (o Obj) List() []*Obj

func (Obj) Str 

func (o Obj) Str() string

func (Obj) String 

func (o Obj) String() string

func (Obj) Type 

func (o Obj) Type() objType

type Runner 

type Runner interface {
	Start() error
	Wait() error
	Results() *Obj

	SetArgs([]ast.Expr, *Shell) error
	SetEnviron([]string)
	SetStdin(io.Reader)
	SetStdout(io.Writer)
	SetStderr(io.Writer)

	StdoutPipe() (io.ReadCloser, error)

	Stdin() io.Reader
	Stdout() io.Writer
	Stderr() io.Writer
}

type Shell 

type Shell struct {
	*sync.Mutex
	// contains filtered or unexported fields
}

Shell is the core data structure.

func NewShell 

func NewShell() (*Shell, error)

NewShell creates a new shell object

func NewSubShell 

func NewSubShell(name string, parent *Shell) (*Shell, error)

NewSubShell creates a nash.Shell that inherits the parent shell stdin, stdout, stderr and mutex lock. Every variable and function lookup is done first in the subshell and then, if not found, in the parent shell recursively.

func (*Shell) Environ 

func (sh *Shell) Environ() Env

func (*Shell) Exec 

func (sh *Shell) Exec(path, content string) error

Exec executes the commands specified by string content

func (*Shell) ExecFile 

func (sh *Shell) ExecFile(path string) error

Execute the nash file at given path

func (*Shell) ExecuteTree 

func (sh *Shell) ExecuteTree(tr *ast.Tree) (*Obj, error)

func (*Shell) GetBuiltin 

func (sh *Shell) GetBuiltin(name string) (Fn, bool)

func (*Shell) GetFn 

func (sh *Shell) GetFn(name string) (Fn, bool)

func (*Shell) GetVar 

func (sh *Shell) GetVar(name string) (*Obj, bool)

func (*Shell) Getbindfn 

func (sh *Shell) Getbindfn(cmdName string) (Fn, bool)

func (*Shell) Getenv 

func (sh *Shell) Getenv(name string) (*Obj, bool)

func (*Shell) IsFn 

func (sh *Shell) IsFn() bool

func (*Shell) Name 

func (sh *Shell) Name() string

func (*Shell) Reset 

func (sh *Shell) Reset()

Reset internal state

func (*Shell) SetDebug 

func (sh *Shell) SetDebug(d bool)

SetDebug enable/disable debug in the shell

func (*Shell) SetEnviron 

func (sh *Shell) SetEnviron(processEnv []string)

func (*Shell) SetIsFn 

func (sh *Shell) SetIsFn(b bool)

func (*Shell) SetName 

func (sh *Shell) SetName(a string)

func (*Shell) SetNashdPath 

func (sh *Shell) SetNashdPath(path string)

SetNashdPath sets an alternativa path to nashd

func (*Shell) SetParent 

func (sh *Shell) SetParent(a *Shell)

func (*Shell) SetRepr 

func (sh *Shell) SetRepr(a string)

SetRepr set the string representation of the shell

func (*Shell) SetStderr 

func (sh *Shell) SetStderr(err io.Writer)

SetStderr sets stderr for commands

func (*Shell) SetStdin 

func (sh *Shell) SetStdin(in io.Reader)

SetStdin sets the stdin for commands

func (*Shell) SetStdout 

func (sh *Shell) SetStdout(out io.Writer)

SetStdout sets stdout for commands

func (*Shell) SetTree 

func (sh *Shell) SetTree(t *ast.Tree)

SetTree sets the internal tree of the interpreter. It's used for sub-shells like `fn`.

func (*Shell) Setbindfn 

func (sh *Shell) Setbindfn(name string, value Fn)

func (*Shell) Setenv 

func (sh *Shell) Setenv(name string, value *Obj)

func (*Shell) Setvar 

func (sh *Shell) Setvar(name string, value *Obj)

func (*Shell) Stderr 

func (sh *Shell) Stderr() io.Writer

func (*Shell) Stdin 

func (sh *Shell) Stdin() io.Reader

func (*Shell) Stdout 

func (sh *Shell) Stdout() io.Writer

func (*Shell) String 

func (sh *Shell) String() string

func (*Shell) Tree 

func (sh *Shell) Tree() *ast.Tree

Tree returns the internal tree of the subshell.

func (*Shell) TriggerCTRLC 

func (sh *Shell) TriggerCTRLC() error

type StatusCode 

type StatusCode uint8

type UserFn 

type UserFn struct {
	*Shell // sub-shell
	// contains filtered or unexported fields
}

func NewUserFn 

func NewUserFn(name string, parent *Shell) (*UserFn, error)

func (*UserFn) AddArgName 

func (fn *UserFn) AddArgName(name string)

func (*UserFn) ArgNames 

func (fn *UserFn) ArgNames() []string

func (*UserFn) Results 

func (fn *UserFn) Results() *Obj

func (*UserFn) SetArgs 

func (fn *UserFn) SetArgs(nodeArgs []ast.Expr, envShell *Shell) error

func (*UserFn) Start 

func (fn *UserFn) Start() error

func (*UserFn) StdoutPipe 

func (fn *UserFn) StdoutPipe() (io.ReadCloser, error)

func (*UserFn) Wait 

func (fn *UserFn) Wait() error

type Var 

type Var Env

Source Files

  • append.go
  • chdir.go
  • cmd.go
  • fncall.go
  • len.go
  • log.go
  • obj.go
  • objtype_string.go
  • rfork_linux.go
  • shell.go
  • util.go

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