gash/tests/read.org

;;; Gash -- Guile As SHell
;;; Copyright © 2019 Timothy Sample <samplet@ngyro.com>
;;;
;;; This file is part of Gash.
;;;
;;; Gash is free software: you can redistribute it and/or modify
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;;; the Free Software Foundation, either version 3 of the License, or
;;; (at your option) any later version.
;;;
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;;; 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 Gash.  If not, see <http://www.gnu.org/licenses/>.

* Reads a single variable
:script:
#+begin_src sh
  echo foo | {
      read x
      echo $x
  }
#+end_src
:stdout:
#+begin_example
  foo
#+end_example

* Reads multiple variables
:script:
#+begin_src sh
  echo foo bar | {
      read x y
      echo $x
      echo $y
  }
#+end_src
:stdout:
#+begin_example
  foo
  bar
#+end_example

* Handles more variables than fields
:script:
#+begin_src sh
  echo foo bar baz | {
      read x y
      echo $x
      echo $y
  }
#+end_src
:stdout:
#+begin_example
  foo
  bar baz
#+end_example

* Handles more fields than variables
:script:
#+begin_src sh
  echo foo | {
      read x y
      echo $x
      echo $y
  }
#+end_src
:stdout:
#+begin_example
  foo
  
#+end_example

* Trims whitespace in extra fields
:script:
#+begin_src sh
  echo foo bar 'baz   ' | {
      read x y
      echo $x
      echo $y
  }
#+end_src
:stdout:
#+begin_example
  foo
  bar baz
#+end_example

* Allows escaping line breaks
:script:
#+begin_src sh
  echo 'foo\
  bar' | {
      read x
      echo $x
  }
#+end_src
:stdout:
#+begin_example
  foobar
#+end_example

* Understands raw input flag
:script:
#+begin_src sh
  echo 'foo\
  bar' | {
      read -r x
      echo $x
  }
#+end_src
:stdout:
#+begin_example
  foo\
#+end_example