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211683cc5c
The open-file port should use the 8-bit ISO-8859-1 encoding when a file is opened using mode "b". Also, it should honor a "coding:" declaration at the top of a file when reading files where it is present. * libguile/fports.c (scm_open_file): modified * test-suite/tests/ports.test: more tests for open-file * doc/ref/api-io.texi (File Ports): more documentation for open-file
872 lines
27 KiB
Scheme
872 lines
27 KiB
Scheme
;;;; ports.test --- Guile I/O ports. -*- coding: utf-8; mode: scheme; -*-
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;;;; Jim Blandy <jimb@red-bean.com> --- May 1999
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;;;;
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;;;; Copyright (C) 1999, 2001, 2004, 2006, 2007, 2009, 2010 Free Software Foundation, Inc.
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;;;;
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;;;; This library is free software; you can redistribute it and/or
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;;;; modify it under the terms of the GNU Lesser General Public
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;;;; License as published by the Free Software Foundation; either
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;;;; version 3 of the License, or (at your option) any later version.
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;;;;
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;;;; This library is distributed in the hope that it will be useful,
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;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;;;; Lesser General Public License for more details.
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;;;;
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;;;; You should have received a copy of the GNU Lesser General Public
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;;;; License along with this library; if not, write to the Free Software
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;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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(define-module (test-suite test-ports)
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:use-module (test-suite lib)
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:use-module (test-suite guile-test)
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:use-module (ice-9 popen)
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:use-module (ice-9 rdelim)
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:use-module (rnrs bytevectors))
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(define (display-line . args)
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(for-each display args)
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(newline))
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(define (test-file)
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(data-file-name "ports-test.tmp"))
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;;;; Some general utilities for testing ports.
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;; Make sure we are set up for 8-bit Latin-1 data.
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(fluid-set! %default-port-encoding "ISO-8859-1")
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(for-each (lambda (p)
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(set-port-encoding! p (fluid-ref %default-port-encoding)))
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(list (current-input-port) (current-output-port)
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(current-error-port)))
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;;; Read from PORT until EOF, and return the result as a string.
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(define (read-all port)
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(let loop ((chars '()))
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(let ((char (read-char port)))
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(if (eof-object? char)
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(list->string (reverse! chars))
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(loop (cons char chars))))))
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(define (read-file filename)
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(let* ((port (open-input-file filename))
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(string (read-all port)))
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(close-port port)
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string))
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;;;; Normal file ports.
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;;; Write out an s-expression, and read it back.
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(let ((string '("From fairest creatures we desire increase,"
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"That thereby beauty's rose might never die,"))
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(filename (test-file)))
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(let ((port (open-output-file filename)))
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(write string port)
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(close-port port))
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(let ((port (open-input-file filename)))
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(let ((in-string (read port)))
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(pass-if "file: write and read back list of strings"
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(equal? string in-string)))
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(close-port port))
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(delete-file filename))
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;;; Write out a string, and read it back a character at a time.
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(let ((string "This is a test string\nwith no newline at the end")
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(filename (test-file)))
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(let ((port (open-output-file filename)))
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(display string port)
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(close-port port))
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(let ((in-string (read-file filename)))
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(pass-if "file: write and read back characters"
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(equal? string in-string)))
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(delete-file filename))
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;;; Buffered input/output port with seeking.
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(let* ((filename (test-file))
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(port (open-file filename "w+")))
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(display "J'Accuse" port)
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(seek port -1 SEEK_CUR)
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(pass-if "file: r/w 1"
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(char=? (read-char port) #\e))
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(pass-if "file: r/w 2"
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(eof-object? (read-char port)))
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(seek port -1 SEEK_CUR)
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(write-char #\x port)
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(seek port 7 SEEK_SET)
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(pass-if "file: r/w 3"
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(char=? (read-char port) #\x))
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(seek port -2 SEEK_END)
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(pass-if "file: r/w 4"
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(char=? (read-char port) #\s))
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(close-port port)
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(delete-file filename))
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;;; Unbuffered input/output port with seeking.
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(let* ((filename (test-file))
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(port (open-file filename "w+0")))
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(display "J'Accuse" port)
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(seek port -1 SEEK_CUR)
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(pass-if "file: ub r/w 1"
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(char=? (read-char port) #\e))
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(pass-if "file: ub r/w 2"
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(eof-object? (read-char port)))
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(seek port -1 SEEK_CUR)
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(write-char #\x port)
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(seek port 7 SEEK_SET)
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(pass-if "file: ub r/w 3"
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(char=? (read-char port) #\x))
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(seek port -2 SEEK_END)
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(pass-if "file: ub r/w 4"
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(char=? (read-char port) #\s))
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(close-port port)
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(delete-file filename))
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;;; Buffered output-only and input-only ports with seeking.
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(let* ((filename (test-file))
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(port (open-output-file filename)))
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(display "J'Accuse" port)
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(pass-if "file: out tell"
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(= (seek port 0 SEEK_CUR) 8))
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(seek port -1 SEEK_CUR)
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(write-char #\x port)
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(close-port port)
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(let ((iport (open-input-file filename)))
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(pass-if "file: in tell 0"
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(= (seek iport 0 SEEK_CUR) 0))
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(read-char iport)
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(pass-if "file: in tell 1"
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(= (seek iport 0 SEEK_CUR) 1))
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(unread-char #\z iport)
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(pass-if "file: in tell 0 after unread"
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(= (seek iport 0 SEEK_CUR) 0))
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(pass-if "file: unread char still there"
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(char=? (read-char iport) #\z))
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(seek iport 7 SEEK_SET)
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(pass-if "file: in last char"
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(char=? (read-char iport) #\x))
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(close-port iport))
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(delete-file filename))
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;;; unusual characters.
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(let* ((filename (test-file))
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(port (open-output-file filename)))
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(display (string #\nul (integer->char 255) (integer->char 128)
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#\nul) port)
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(close-port port)
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(let* ((port (open-input-file filename))
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(line (read-line port)))
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(pass-if "file: read back NUL 1"
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(char=? (string-ref line 0) #\nul))
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(pass-if "file: read back 255"
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(char=? (string-ref line 1) (integer->char 255)))
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(pass-if "file: read back 128"
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(char=? (string-ref line 2) (integer->char 128)))
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(pass-if "file: read back NUL 2"
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(char=? (string-ref line 3) #\nul))
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(pass-if "file: EOF"
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(eof-object? (read-char port)))
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(close-port port))
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(delete-file filename))
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;;; line buffering mode.
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(let* ((filename (test-file))
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(port (open-file filename "wl"))
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(test-string "one line more or less"))
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(write-line test-string port)
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(let* ((in-port (open-input-file filename))
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(line (read-line in-port)))
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(close-port in-port)
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(close-port port)
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(pass-if "file: line buffering"
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(string=? line test-string)))
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(delete-file filename))
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;;; read-line should use the port encoding (not the locale encoding).
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(let ((str "ĉu bone?"))
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(with-locale "C"
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(let* ((filename (test-file))
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(port (open-file filename "wl")))
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(set-port-encoding! port "UTF-8")
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(write-line str port)
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(let ((in-port (open-input-file filename)))
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(set-port-encoding! in-port "UTF-8")
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(let ((line (read-line in-port)))
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(close-port in-port)
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(close-port port)
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(pass-if "file: read-line honors port encoding"
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(string=? line str))))
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(delete-file filename))))
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;;; binary mode ignores port encoding
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(pass-if "file: binary mode ignores port encoding"
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(with-fluids ((%default-port-encoding "UTF-8"))
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(let* ((filename (test-file))
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(port (open-file filename "w"))
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(test-string "一二三")
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(binary-test-string
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(apply string
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(map integer->char
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(uniform-vector->list
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(string->utf8 test-string))))))
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(write-line test-string port)
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(close-port port)
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(let* ((in-port (open-file filename "rb"))
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(line (read-line in-port)))
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(close-port in-port)
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(delete-file filename)
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(string=? line binary-test-string)))))
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;;; binary mode ignores file coding declaration
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(pass-if "file: binary mode ignores file coding declaration"
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(with-fluids ((%default-port-encoding "UTF-8"))
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(let* ((filename (test-file))
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(port (open-file filename "w"))
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(test-string "一二三")
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(binary-test-string
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(apply string
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(map integer->char
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(uniform-vector->list
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(string->utf8 test-string))))))
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(write-line ";; coding: utf-8" port)
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(write-line test-string port)
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(close-port port)
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(let* ((in-port (open-file filename "rb"))
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(line1 (read-line in-port))
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(line2 (read-line in-port)))
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(close-port in-port)
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(delete-file filename)
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(string=? line2 binary-test-string)))))
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;; open-file honors file coding declarations
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(pass-if "file: open-file honors coding declarations"
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(with-fluids ((%default-port-encoding "UTF-8"))
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(let* ((filename (test-file))
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(port (open-output-file filename))
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(test-string "€100"))
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(set-port-encoding! port "ISO-8859-15")
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(write-line ";; coding: iso-8859-15" port)
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(write-line test-string port)
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(close-port port)
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(let* ((in-port (open-input-file filename))
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(line1 (read-line in-port))
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(line2 (read-line in-port)))
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(close-port in-port)
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(delete-file filename)
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(string=? line2 test-string)))))
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;;; ungetting characters and strings.
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(with-input-from-string "walk on the moon\nmoon"
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(lambda ()
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(read-char)
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(unread-char #\a (current-input-port))
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(pass-if "unread-char"
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(char=? (read-char) #\a))
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(read-line)
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(let ((replacenoid "chicken enchilada"))
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(unread-char #\newline (current-input-port))
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(unread-string replacenoid (current-input-port))
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(pass-if "unread-string"
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(string=? (read-line) replacenoid)))
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(pass-if "unread residue"
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(string=? (read-line) "moon"))))
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;;; non-blocking mode on a port. create a pipe and set O_NONBLOCK on
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;;; the reading end. try to read a byte: should get EAGAIN or
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;;; EWOULDBLOCK error.
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(let* ((p (pipe))
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(r (car p)))
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(fcntl r F_SETFL (logior (fcntl r F_GETFL) O_NONBLOCK))
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(pass-if "non-blocking-I/O"
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(catch 'system-error
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(lambda () (read-char r) #f)
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(lambda (key . args)
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(and (eq? key 'system-error)
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(let ((errno (car (list-ref args 3))))
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(or (= errno EAGAIN)
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(= errno EWOULDBLOCK))))))))
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;;;; Pipe (popen) ports.
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;;; Run a command, and read its output.
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(let* ((pipe (open-pipe "echo 'Howdy there, partner!'" "r"))
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(in-string (read-all pipe)))
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(close-pipe pipe)
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(pass-if "pipe: read"
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(equal? in-string "Howdy there, partner!\n")))
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;;; Run a command, send some output to it, and see if it worked.
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(let* ((filename (test-file))
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(pipe (open-pipe (string-append "grep Mommy > " filename) "w")))
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(display "Now Jimmy lives on a mushroom cloud\n" pipe)
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(display "Mommy, why does everybody have a bomb?\n" pipe)
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(close-pipe pipe)
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(let ((in-string (read-file filename)))
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(pass-if "pipe: write"
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(equal? in-string "Mommy, why does everybody have a bomb?\n")))
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(delete-file filename))
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;;;; Void ports. These are so trivial we don't test them.
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;;;; String ports.
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(with-test-prefix "string ports"
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;; Write text to a string port.
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(let* ((string "Howdy there, partner!")
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(in-string (call-with-output-string
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(lambda (port)
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(display string port)
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(newline port)))))
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(pass-if "display text"
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(equal? in-string (string-append string "\n"))))
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;; Write an s-expression to a string port.
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(let* ((sexpr '("more utterly random text" 1729 #(a vector) 3.1415926))
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(in-sexpr
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(call-with-input-string (call-with-output-string
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(lambda (port)
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(write sexpr port)))
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read)))
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(pass-if "write/read sexpr"
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(equal? in-sexpr sexpr)))
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;; seeking and unreading from an input string.
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(let ((text "that text didn't look random to me"))
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(call-with-input-string text
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(lambda (p)
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(pass-if "input tell 0"
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(= (seek p 0 SEEK_CUR) 0))
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(read-char p)
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(pass-if "input tell 1"
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(= (seek p 0 SEEK_CUR) 1))
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(unread-char #\x p)
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(pass-if "input tell back to 0"
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(= (seek p 0 SEEK_CUR) 0))
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(pass-if "input ungetted char"
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(char=? (read-char p) #\x))
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(seek p 0 SEEK_END)
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(pass-if "input seek to end"
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(= (seek p 0 SEEK_CUR)
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(string-length text)))
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(unread-char #\x p)
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(pass-if "input seek to beginning"
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(= (seek p 0 SEEK_SET) 0))
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(pass-if "input reread first char"
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(char=? (read-char p)
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(string-ref text 0))))))
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;; seeking an output string.
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(let* ((text (string-copy "123456789"))
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(len (string-length text))
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(result (call-with-output-string
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(lambda (p)
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(pass-if "output tell 0"
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(= (seek p 0 SEEK_CUR) 0))
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(display text p)
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(pass-if "output tell end"
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(= (seek p 0 SEEK_CUR) len))
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(pass-if "output seek to beginning"
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(= (seek p 0 SEEK_SET) 0))
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(write-char #\a p)
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(seek p -1 SEEK_END)
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(pass-if "output seek to last char"
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(= (seek p 0 SEEK_CUR)
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(- len 1)))
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(write-char #\b p)))))
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(string-set! text 0 #\a)
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(string-set! text (- len 1) #\b)
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(pass-if "output check"
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(string=? text result)))
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(pass-if "%default-port-encoding is honored"
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(let ((encodings '("UTF-8" "UTF-16" "ISO-8859-1" "ISO-8859-3")))
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(equal? (map (lambda (e)
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(with-fluids ((%default-port-encoding e))
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(call-with-output-string
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(lambda (p)
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(display (port-encoding p) p)))))
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encodings)
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encodings)))
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(pass-if "suitable encoding [latin-1]"
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(let ((str "hello, world"))
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(with-fluids ((%default-port-encoding "ISO-8859-1"))
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(equal? str
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(with-output-to-string
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(lambda ()
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(display str)))))))
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(pass-if "suitable encoding [latin-3]"
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(let ((str "ĉu bone?"))
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(with-fluids ((%default-port-encoding "ISO-8859-3"))
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(equal? str
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(with-output-to-string
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(lambda ()
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(display str)))))))
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(pass-if "wrong encoding"
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(let ((str "ĉu bone?"))
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(catch 'encoding-error
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(lambda ()
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;; Latin-1 cannot represent ‘ĉ’.
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(with-fluids ((%default-port-encoding "ISO-8859-1"))
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(with-output-to-string
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(lambda ()
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(display str)))))
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(lambda (key subr message errno from to faulty-str)
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(and (eq? faulty-str str)
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(string=? from "UTF-32")
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(string=? to "ISO-8859-1")
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(string? (strerror errno))))))))
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(with-test-prefix "call-with-output-string"
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;; In Guile 1.6.4, closing the port resulted in a segv, check that doesn't
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;; occur.
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(pass-if-exception "proc closes port" exception:wrong-type-arg
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(call-with-output-string close-port)))
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;;;; Soft ports. No tests implemented yet.
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;;;; Generic operations across all port types.
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(let ((port-loop-temp (test-file)))
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;; Return a list of input ports that all return the same text.
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;; We map tests over this list.
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(define (input-port-list text)
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;; Create a text file some of the ports will use.
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(let ((out-port (open-output-file port-loop-temp)))
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(display text out-port)
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(close-port out-port))
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(list (open-input-file port-loop-temp)
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(open-input-pipe (string-append "cat " port-loop-temp))
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(call-with-input-string text (lambda (x) x))
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;; We don't test soft ports at the moment.
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))
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(define port-list-names '("file" "pipe" "string"))
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;; Test the line counter.
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(define (test-line-counter text second-line final-column)
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(with-test-prefix "line counter"
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(let ((ports (input-port-list text)))
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(for-each
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(lambda (port port-name)
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(with-test-prefix port-name
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(pass-if "at beginning of input"
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||
(= (port-line port) 0))
|
||
(pass-if "read first character"
|
||
(eqv? (read-char port) #\x))
|
||
(pass-if "after reading one character"
|
||
(= (port-line port) 0))
|
||
(pass-if "read first newline"
|
||
(eqv? (read-char port) #\newline))
|
||
(pass-if "after reading first newline char"
|
||
(= (port-line port) 1))
|
||
(pass-if "second line read correctly"
|
||
(equal? (read-line port) second-line))
|
||
(pass-if "read-line increments line number"
|
||
(= (port-line port) 2))
|
||
(pass-if "read-line returns EOF"
|
||
(let loop ((i 0))
|
||
(cond
|
||
((eof-object? (read-line port)) #t)
|
||
((> i 20) #f)
|
||
(else (loop (+ i 1))))))
|
||
(pass-if "line count is 5 at EOF"
|
||
(= (port-line port) 5))
|
||
(pass-if "column is correct at EOF"
|
||
(= (port-column port) final-column))))
|
||
ports port-list-names)
|
||
(for-each close-port ports)
|
||
(delete-file port-loop-temp))))
|
||
|
||
(with-test-prefix "newline"
|
||
(test-line-counter
|
||
(string-append "x\n"
|
||
"He who receives an idea from me, receives instruction\n"
|
||
"himself without lessening mine; as he who lights his\n"
|
||
"taper at mine, receives light without darkening me.\n"
|
||
" --- Thomas Jefferson\n")
|
||
"He who receives an idea from me, receives instruction"
|
||
0))
|
||
|
||
(with-test-prefix "no newline"
|
||
(test-line-counter
|
||
(string-append "x\n"
|
||
"He who receives an idea from me, receives instruction\n"
|
||
"himself without lessening mine; as he who lights his\n"
|
||
"taper at mine, receives light without darkening me.\n"
|
||
" --- Thomas Jefferson\n"
|
||
"no newline here")
|
||
"He who receives an idea from me, receives instruction"
|
||
15)))
|
||
|
||
;; Test port-line and port-column for output ports
|
||
|
||
(define (test-output-line-counter text final-column)
|
||
(with-test-prefix "port-line and port-column for output ports"
|
||
(let ((port (open-output-string)))
|
||
(pass-if "at beginning of input"
|
||
(and (= (port-line port) 0)
|
||
(= (port-column port) 0)))
|
||
(write-char #\x port)
|
||
(pass-if "after writing one character"
|
||
(and (= (port-line port) 0)
|
||
(= (port-column port) 1)))
|
||
(write-char #\newline port)
|
||
(pass-if "after writing first newline char"
|
||
(and (= (port-line port) 1)
|
||
(= (port-column port) 0)))
|
||
(display text port)
|
||
(pass-if "line count is 5 at end"
|
||
(= (port-line port) 5))
|
||
(pass-if "column is correct at end"
|
||
(= (port-column port) final-column)))))
|
||
|
||
(test-output-line-counter
|
||
(string-append "He who receives an idea from me, receives instruction\n"
|
||
"himself without lessening mine; as he who lights his\n"
|
||
"taper at mine, receives light without darkening me.\n"
|
||
" --- Thomas Jefferson\n"
|
||
"no newline here")
|
||
15)
|
||
|
||
(with-test-prefix "port-column"
|
||
|
||
(with-test-prefix "output"
|
||
|
||
(pass-if "x"
|
||
(let ((port (open-output-string)))
|
||
(display "x" port)
|
||
(= 1 (port-column port))))
|
||
|
||
(pass-if "\\a"
|
||
(let ((port (open-output-string)))
|
||
(display "\a" port)
|
||
(= 0 (port-column port))))
|
||
|
||
(pass-if "x\\a"
|
||
(let ((port (open-output-string)))
|
||
(display "x\a" port)
|
||
(= 1 (port-column port))))
|
||
|
||
(pass-if "\\x08 backspace"
|
||
(let ((port (open-output-string)))
|
||
(display "\x08" port)
|
||
(= 0 (port-column port))))
|
||
|
||
(pass-if "x\\x08 backspace"
|
||
(let ((port (open-output-string)))
|
||
(display "x\x08" port)
|
||
(= 0 (port-column port))))
|
||
|
||
(pass-if "\\n"
|
||
(let ((port (open-output-string)))
|
||
(display "\n" port)
|
||
(= 0 (port-column port))))
|
||
|
||
(pass-if "x\\n"
|
||
(let ((port (open-output-string)))
|
||
(display "x\n" port)
|
||
(= 0 (port-column port))))
|
||
|
||
(pass-if "\\r"
|
||
(let ((port (open-output-string)))
|
||
(display "\r" port)
|
||
(= 0 (port-column port))))
|
||
|
||
(pass-if "x\\r"
|
||
(let ((port (open-output-string)))
|
||
(display "x\r" port)
|
||
(= 0 (port-column port))))
|
||
|
||
(pass-if "\\t"
|
||
(let ((port (open-output-string)))
|
||
(display "\t" port)
|
||
(= 8 (port-column port))))
|
||
|
||
(pass-if "x\\t"
|
||
(let ((port (open-output-string)))
|
||
(display "x\t" port)
|
||
(= 8 (port-column port)))))
|
||
|
||
(with-test-prefix "input"
|
||
|
||
(pass-if "x"
|
||
(let ((port (open-input-string "x")))
|
||
(while (not (eof-object? (read-char port))))
|
||
(= 1 (port-column port))))
|
||
|
||
(pass-if "\\a"
|
||
(let ((port (open-input-string "\a")))
|
||
(while (not (eof-object? (read-char port))))
|
||
(= 0 (port-column port))))
|
||
|
||
(pass-if "x\\a"
|
||
(let ((port (open-input-string "x\a")))
|
||
(while (not (eof-object? (read-char port))))
|
||
(= 1 (port-column port))))
|
||
|
||
(pass-if "\\x08 backspace"
|
||
(let ((port (open-input-string "\x08")))
|
||
(while (not (eof-object? (read-char port))))
|
||
(= 0 (port-column port))))
|
||
|
||
(pass-if "x\\x08 backspace"
|
||
(let ((port (open-input-string "x\x08")))
|
||
(while (not (eof-object? (read-char port))))
|
||
(= 0 (port-column port))))
|
||
|
||
(pass-if "\\n"
|
||
(let ((port (open-input-string "\n")))
|
||
(while (not (eof-object? (read-char port))))
|
||
(= 0 (port-column port))))
|
||
|
||
(pass-if "x\\n"
|
||
(let ((port (open-input-string "x\n")))
|
||
(while (not (eof-object? (read-char port))))
|
||
(= 0 (port-column port))))
|
||
|
||
(pass-if "\\r"
|
||
(let ((port (open-input-string "\r")))
|
||
(while (not (eof-object? (read-char port))))
|
||
(= 0 (port-column port))))
|
||
|
||
(pass-if "x\\r"
|
||
(let ((port (open-input-string "x\r")))
|
||
(while (not (eof-object? (read-char port))))
|
||
(= 0 (port-column port))))
|
||
|
||
(pass-if "\\t"
|
||
(let ((port (open-input-string "\t")))
|
||
(while (not (eof-object? (read-char port))))
|
||
(= 8 (port-column port))))
|
||
|
||
(pass-if "x\\t"
|
||
(let ((port (open-input-string "x\t")))
|
||
(while (not (eof-object? (read-char port))))
|
||
(= 8 (port-column port))))))
|
||
|
||
(with-test-prefix "port-line"
|
||
|
||
;; in guile 1.8.1 and earlier port-line was truncated to an int, whereas
|
||
;; scm_t_port actually holds a long; this restricted the range on 64-bit
|
||
;; systems
|
||
(pass-if "set most-positive-fixnum/2"
|
||
(let ((n (quotient most-positive-fixnum 2))
|
||
(port (open-output-string)))
|
||
(set-port-line! port n)
|
||
(eqv? n (port-line port)))))
|
||
|
||
;;;
|
||
;;; port-for-each
|
||
;;;
|
||
|
||
(with-test-prefix "port-for-each"
|
||
|
||
;; In guile 1.8.0 through 1.8.2, port-for-each could pass a freed cell to
|
||
;; its iterator func if a port was inaccessible in the last gc mark but
|
||
;; the lazy sweeping has not yet reached it to remove it from the port
|
||
;; table (scm_i_port_table). Provoking those gc conditions is a little
|
||
;; tricky, but the following code made it happen in 1.8.2.
|
||
(pass-if "passing freed cell"
|
||
(let ((lst '()))
|
||
;; clear out the heap
|
||
(gc) (gc) (gc)
|
||
;; allocate cells so the opened ports aren't at the start of the heap
|
||
(make-list 1000)
|
||
(open-input-file "/dev/null")
|
||
(make-list 1000)
|
||
(open-input-file "/dev/null")
|
||
;; this gc leaves the above ports unmarked, ie. inaccessible
|
||
(gc)
|
||
;; but they're still in the port table, so this sees them
|
||
(port-for-each (lambda (port)
|
||
(set! lst (cons port lst))))
|
||
;; this forces completion of the sweeping
|
||
(gc) (gc) (gc)
|
||
;; and (if the bug is present) the cells accumulated in LST are now
|
||
;; freed cells, which give #f from `port?'
|
||
(not (memq #f (map port? lst))))))
|
||
|
||
(with-test-prefix
|
||
"fdes->port"
|
||
(pass-if "fdes->ports finds port"
|
||
(let ((port (open-file (test-file) "w")))
|
||
|
||
(not (not (memq port (fdes->ports (port->fdes port))))))))
|
||
|
||
;;;
|
||
;;; seek
|
||
;;;
|
||
|
||
(with-test-prefix "seek"
|
||
|
||
(with-test-prefix "file port"
|
||
|
||
(pass-if "SEEK_CUR"
|
||
(call-with-output-file (test-file)
|
||
(lambda (port)
|
||
(display "abcde" port)))
|
||
(let ((port (open-file (test-file) "r")))
|
||
(read-char port)
|
||
(seek port 2 SEEK_CUR)
|
||
(eqv? #\d (read-char port))))
|
||
|
||
(pass-if "SEEK_SET"
|
||
(call-with-output-file (test-file)
|
||
(lambda (port)
|
||
(display "abcde" port)))
|
||
(let ((port (open-file (test-file) "r")))
|
||
(read-char port)
|
||
(seek port 3 SEEK_SET)
|
||
(eqv? #\d (read-char port))))
|
||
|
||
(pass-if "SEEK_END"
|
||
(call-with-output-file (test-file)
|
||
(lambda (port)
|
||
(display "abcde" port)))
|
||
(let ((port (open-file (test-file) "r")))
|
||
(read-char port)
|
||
(seek port -2 SEEK_END)
|
||
(eqv? #\d (read-char port))))))
|
||
|
||
;;;
|
||
;;; truncate-file
|
||
;;;
|
||
|
||
(with-test-prefix "truncate-file"
|
||
|
||
(pass-if-exception "flonum file" exception:wrong-type-arg
|
||
(truncate-file 1.0 123))
|
||
|
||
(pass-if-exception "frac file" exception:wrong-type-arg
|
||
(truncate-file 7/3 123))
|
||
|
||
(with-test-prefix "filename"
|
||
|
||
(pass-if-exception "flonum length" exception:wrong-type-arg
|
||
(call-with-output-file (test-file)
|
||
(lambda (port)
|
||
(display "hello" port)))
|
||
(truncate-file (test-file) 1.0))
|
||
|
||
(pass-if "shorten"
|
||
(call-with-output-file (test-file)
|
||
(lambda (port)
|
||
(display "hello" port)))
|
||
(truncate-file (test-file) 1)
|
||
(eqv? 1 (stat:size (stat (test-file)))))
|
||
|
||
(pass-if-exception "shorten to current pos" exception:miscellaneous-error
|
||
(call-with-output-file (test-file)
|
||
(lambda (port)
|
||
(display "hello" port)))
|
||
(truncate-file (test-file))))
|
||
|
||
(with-test-prefix "file descriptor"
|
||
|
||
(pass-if "shorten"
|
||
(call-with-output-file (test-file)
|
||
(lambda (port)
|
||
(display "hello" port)))
|
||
(let ((fd (open-fdes (test-file) O_RDWR)))
|
||
(truncate-file fd 1)
|
||
(close-fdes fd))
|
||
(eqv? 1 (stat:size (stat (test-file)))))
|
||
|
||
(pass-if "shorten to current pos"
|
||
(call-with-output-file (test-file)
|
||
(lambda (port)
|
||
(display "hello" port)))
|
||
(let ((fd (open-fdes (test-file) O_RDWR)))
|
||
(seek fd 1 SEEK_SET)
|
||
(truncate-file fd)
|
||
(close-fdes fd))
|
||
(eqv? 1 (stat:size (stat (test-file))))))
|
||
|
||
(with-test-prefix "file port"
|
||
|
||
(pass-if "shorten"
|
||
(call-with-output-file (test-file)
|
||
(lambda (port)
|
||
(display "hello" port)))
|
||
(let ((port (open-file (test-file) "r+")))
|
||
(truncate-file port 1))
|
||
(eqv? 1 (stat:size (stat (test-file)))))
|
||
|
||
(pass-if "shorten to current pos"
|
||
(call-with-output-file (test-file)
|
||
(lambda (port)
|
||
(display "hello" port)))
|
||
(let ((port (open-file (test-file) "r+")))
|
||
(read-char port)
|
||
(truncate-file port))
|
||
(eqv? 1 (stat:size (stat (test-file)))))))
|
||
|
||
|
||
;;;; testing read-delimited and friends
|
||
|
||
(with-test-prefix "read-delimited!"
|
||
(let ((c (make-string 20 #\!)))
|
||
(call-with-input-string
|
||
"defdef\nghighi\n"
|
||
(lambda (port)
|
||
|
||
(read-delimited! "\n" c port 'concat)
|
||
(pass-if "read-delimited! reads a first line"
|
||
(string=? c "defdef\n!!!!!!!!!!!!!"))
|
||
|
||
(read-delimited! "\n" c port 'concat 3)
|
||
(pass-if "read-delimited! reads a first line"
|
||
(string=? c "defghighi\n!!!!!!!!!!"))))))
|
||
|
||
|
||
;;;; char-ready?
|
||
|
||
(call-with-input-string
|
||
"howdy"
|
||
(lambda (port)
|
||
(pass-if "char-ready? returns true on string port"
|
||
(char-ready? port))))
|
||
|
||
;;; This segfaults on some versions of Guile. We really should run
|
||
;;; the tests in a subprocess...
|
||
|
||
(call-with-input-string
|
||
"howdy"
|
||
(lambda (port)
|
||
(with-input-from-port
|
||
port
|
||
(lambda ()
|
||
(pass-if "char-ready? returns true on string port as default port"
|
||
(char-ready?))))))
|
||
|
||
|
||
;;;; Close current-input-port, and make sure everyone can handle it.
|
||
|
||
(with-test-prefix "closing current-input-port"
|
||
(for-each (lambda (procedure name)
|
||
(with-input-from-port
|
||
(call-with-input-string "foo" (lambda (p) p))
|
||
(lambda ()
|
||
(close-port (current-input-port))
|
||
(pass-if-exception name
|
||
exception:wrong-type-arg
|
||
(procedure)))))
|
||
(list read read-char read-line)
|
||
'("read" "read-char" "read-line")))
|
||
|
||
(delete-file (test-file))
|