;;; redirection.scm -- Output redirection procedures.

  Copyright ( C ) 2020    <  >
;;
;; This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation , either version 3 of the License , or
;; (at your option) any later version.
;;
;; The program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.
;;
  You should have received a copy of the GNU General Public License
;; along with the program.  If not, see </>.


;;; Commentary:

;; This file contains implementation redirection procedures.


;;; Code:

(define-module (metabash core redirection)
  #:use-module (oop goops)
  #:use-module (metabash core plumbing pipe)
  #:use-module (metabash core process)
  #:use-module (metabash core pipeline)
  #:export (M> M>>))

  Redirections .

(define-generic M>)

(define-method (%redirect (input-port <port>) (file-name <string>) (mode <string>))
  (let* ((file-port (open-file file-name mode))
         (pipe      (make <pipe>
                      #:input-port  input-port
                      #:output-port file-port)))
    (pipe-connect! pipe)
    pipe))

  Redirect output from an INPUT - PORT to a FILE - NAME . The contents of the file
;; will be overwritten.
(define-method (M> (input-port <port>) (file-name <string>))
  (%redirect input-port file-name "wb"))

(define-method (M> (process <process>) (file-name <string>))
  (M> (process-output-port process) file-name))

(define-method (M> (pipeline <pipeline>) (file-name <string>))
  (M> (pipeline-output-port pipeline) file-name))



(define-generic M>>)

  Redirect output from an INPUT - PORT to a FILE - NAME . The data will be appended
;; to the end of the file.
(define-method (M>> (input-port <port>) (file-name <string>))
  (%redirect input-port file-name "ab"))

(define-method (M>> (process <process>) (file-name <string>))
  (M>> (process-output-port process) file-name))

(define-method (M>> (pipeline <pipeline>) (file-name <string>))
  (M>> (pipeline-output-port pipeline) file-name))

 redirection.scm -- Output redirection procedures.

 This program is free software: you can redistribute it and/or modify
 (at your option) any later version.

 The program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 along with the program.  If not, see </>.
 Commentary:
 This file contains implementation redirection procedures.
 Code:
 will be overwritten.
 to the end of the file.

  Copyright ( C ) 2020    <  >
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation , either version 3 of the License , or
  You should have received a copy of the GNU General Public License






(define-module (metabash core redirection)
  #:use-module (oop goops)
  #:use-module (metabash core plumbing pipe)
  #:use-module (metabash core process)
  #:use-module (metabash core pipeline)
  #:export (M> M>>))

  Redirections .

(define-generic M>)

(define-method (%redirect (input-port <port>) (file-name <string>) (mode <string>))
  (let* ((file-port (open-file file-name mode))
         (pipe      (make <pipe>
                      #:input-port  input-port
                      #:output-port file-port)))
    (pipe-connect! pipe)
    pipe))

  Redirect output from an INPUT - PORT to a FILE - NAME . The contents of the file
(define-method (M> (input-port <port>) (file-name <string>))
  (%redirect input-port file-name "wb"))

(define-method (M> (process <process>) (file-name <string>))
  (M> (process-output-port process) file-name))

(define-method (M> (pipeline <pipeline>) (file-name <string>))
  (M> (pipeline-output-port pipeline) file-name))



(define-generic M>>)

  Redirect output from an INPUT - PORT to a FILE - NAME . The data will be appended
(define-method (M>> (input-port <port>) (file-name <string>))
  (%redirect input-port file-name "ab"))

(define-method (M>> (process <process>) (file-name <string>))
  (M>> (process-output-port process) file-name))

(define-method (M>> (pipeline <pipeline>) (file-name <string>))
  (M>> (pipeline-output-port pipeline) file-name))
