change-file-lines ( ..a path encoding quot: ( ..a seq -- ..b seq' ) -- ..b )
Factor handbook » Input and output » Reading and writing files

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Vocabulary
io.files

Inputs

path	a pathname string
encoding	an encoding descriptor
quot	a quotation

Outputs
None

Word description
Reads the file lines, transforms the file lines, and writes them back to the same file name.

Errors
Throws an error if the file cannot be opened for writing.

See also
set-file-lines, file-lines, set-file-contents, file-contents, change-file-contents

Definition

USING: kernel ;

IN: io.files

: change-file-lines
    ( ..a path encoding quot: ( ..a seq -- ..b seq' ) -- ..b )
    [ [ file-lines ] ] dip compose [ set-file-lines ] 2bi ;
    inline