143 lines
3.3 KiB
Factor
143 lines
3.3 KiB
Factor
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USING: kernel parser words continuations namespaces debugger
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sequences combinators splitting prettyprint
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system io io.files io.launcher io.encodings.utf8 io.pipes sequences.deep
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accessors multi-methods newfx shell.parser
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combinators.short-circuit ;
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IN: shell
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: cd ( args -- )
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dup empty?
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[ drop home set-current-directory ]
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[ first set-current-directory ]
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if ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: pwd ( args -- )
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drop
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current-directory get
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print ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: swords ( -- seq ) { "cd" "pwd" } ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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GENERIC: expand ( expr -- expr )
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METHOD: expand { single-quoted-expr } expr>> ;
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METHOD: expand { double-quoted-expr } expr>> ;
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METHOD: expand { variable-expr } expr>> os-env ;
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METHOD: expand { glob-expr }
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expr>>
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dup "*" =
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[ drop current-directory get directory [ first ] map ]
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[ ]
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if ;
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METHOD: expand { factor-expr } expr>> eval unparse ;
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DEFER: expansion
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METHOD: expand { back-quoted-expr }
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expr>>
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expr
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ast>>
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command>>
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expansion
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utf8 <process-stream>
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contents
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" \n" split
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"" remove ;
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METHOD: expand { object } ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: expansion ( command -- command ) [ expand ] map flatten ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: run-sword ( basic-expr -- )
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command>> expansion unclip "shell" lookup execute ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: run-foreground ( process -- )
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[ try-process ] [ print-error drop ] recover ;
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: run-background ( process -- ) run-detached drop ;
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: run-basic-expr ( basic-expr -- )
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<process>
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over command>> expansion >>command
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over stdin>> >>stdin
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over stdout>> >>stdout
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swap background>>
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[ run-background ]
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[ run-foreground ]
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if ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: basic-chant ( basic-expr -- )
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dup command>> first swords member-of?
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[ run-sword ]
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[ run-basic-expr ]
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if ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: pipeline-chant ( pipeline-chant -- ) commands>> run-pipeline drop ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: chant ( obj -- )
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dup basic-expr?
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[ basic-chant ]
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[ pipeline-chant ]
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if ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: prompt ( -- )
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current-directory get write
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" $ " write
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flush ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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DEFER: shell
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: handle ( input -- )
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{
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{ [ dup f = ] [ drop ] }
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{ [ dup "exit" = ] [ drop ] }
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{ [ dup "" = ] [ drop shell ] }
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{ [ dup expr ] [ expr ast>> chant shell ] }
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{ [ t ] [ drop "ix: ignoring input" print shell ] }
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}
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cond ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: shell ( -- )
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prompt
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readln
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handle ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: ix ( -- ) shell ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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MAIN: ix |