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add read-string and read-string! to (ice-9 rdelim)

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* module/ice-9/rdelim.scm (read-string!, read-string): New functions.
* test-suite/tests/rdelim.test: Add tests.
* doc/ref/api-io.texi: Add docs.

* module/ice-9/iconv.scm:
* module/rnrs/io/ports.scm:
* module/web/uri.scm: Use the new functions.
This commit is contained in:
Andy Wingo 2013-01-22 10:12:59 +01:00
parent 84f5a82517
commit 5a35d42aa5
6 changed files with 144 additions and 9 deletions
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57
test-suite/tests/rdelim.test
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@ -1,7 +1,7 @@
;;;; rdelim.test --- Delimited I/O. -*- mode: scheme; coding: utf-8; -*-
;;;; Ludovic Courtès <ludo@gnu.org>
;;;;
;;;; Copyright (C) 2011 Free Software Foundation, Inc.
;;;; Copyright (C) 2011, 2013 Free Software Foundation, Inc.
;;;;
;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public
@ -189,7 +189,60 @@
(pass-if "eof, split"
(eof-object? (read-delimited! ":" (make-string 7)
(open-input-string ""))))))
(open-input-string "")))))
(with-test-prefix "read-string"
(pass-if "short string"
(let* ((s "hello, world!")
(p (open-input-string s)))
(and (string=? (read-string p) s)
(string=? (read-string p) ""))))
(pass-if "100 chars"
(let* ((s (make-string 100 #\space))
(p (open-input-string s)))
(and (string=? (read-string p) s)
(string=? (read-string p) ""))))
(pass-if "longer than 100 chars"
(let* ((s (string-concatenate (make-list 20 "hello, world!")))
(p (open-input-string s)))
(and (string=? (read-string p) s)
(string=? (read-string p) "")))))
(with-test-prefix "read-string!"
(pass-if "buf smaller"
(let* ((s "hello, world!")
(len (1- (string-length s)))
(buf (make-string len #\.))
(p (open-input-string s)))
(and (= (read-string! buf p) len)
(string=? buf (substring s 0 len))
(= (read-string! buf p) 1)
(string=? (substring buf 0 1) (substring s len)))))
(pass-if "buf right size"
(let* ((s "hello, world!")
(len (string-length s))
(buf (make-string len #\.))
(p (open-input-string s)))
(and (= (read-string! buf p) len)
(string=? buf (substring s 0 len))
(= (read-string! buf p) 0)
(string=? buf (substring s 0 len)))))
(pass-if "buf bigger"
(let* ((s "hello, world!")
(len (string-length s))
(buf (make-string (1+ len) #\.))
(p (open-input-string s)))
(and (= (read-string! buf p) len)
(string=? (substring buf 0 len) s)
(= (read-string! buf p) 0)
(string=? (substring buf 0 len) s)
(string=? (substring buf len) "."))))))
;;; Local Variables:
;;; eval: (put 'with-test-prefix 'scheme-indent-function 1)