source/text/sbasic/shared/03020301.xhp


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79

<?xml version="1.0" encoding="UTF-8"?>


<!--
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 -->
	
<helpdocument version="1.0">
<meta>
<topic id="textsbasicshared03020301xml" indexer="include" status="PUBLISH">
<title id="tit" xml-lang="en-US">Eof Function [Runtime]</title>
<filename>/text/sbasic/shared/03020301.xhp</filename>
</topic>
<history>
<created date="2003-10-31T00:00:00">Sun Microsystems, Inc.</created>
<lastedited date="2004-09-01T15:24:39">converted from old format - fpe</lastedited>
</history>
</meta>
<body>
<section id="eof">
<bookmark xml-lang="en-US" branch="index" id="bm_id3154598"><bookmark_value>Eof function</bookmark_value>
</bookmark>
<paragraph role="heading" id="hd_id3154598" xml-lang="en-US" level="1" l10n="U" oldref="1"><link href="text/sbasic/shared/03020301.xhp" name="Eof Function [Runtime]">Eof Function [Runtime]</link></paragraph>
<paragraph role="paragraph" id="par_id3147182" xml-lang="en-US" l10n="U" oldref="2">Determines if the file pointer has reached the end of a file.</paragraph>
</section>
<paragraph role="heading" id="hd_id3149119" xml-lang="en-US" level="2" l10n="U" oldref="3">Syntax:</paragraph>
<bascode>
<paragraph role="bascode" id="par_id3147399" xml-lang="en-US" l10n="U" oldref="4">Eof (intexpression As Integer)</paragraph>
</bascode>
<paragraph role="heading" id="hd_id3153539" xml-lang="en-US" level="2" l10n="U" oldref="5">Return value:</paragraph>
<paragraph role="paragraph" id="par_id3156027" xml-lang="en-US" l10n="U" oldref="6">Bool</paragraph>
<paragraph role="heading" id="hd_id3152924" xml-lang="en-US" level="2" l10n="U" oldref="7">Parameters:</paragraph>
<paragraph role="paragraph" id="par_id3153990" xml-lang="en-US" l10n="U" oldref="8">
<emph>Intexpression:</emph> Any integer expression that evaluates to the number of an open file.</paragraph>
<paragraph role="paragraph" id="par_id3153527" xml-lang="en-US" l10n="U" oldref="9">Use EOF to avoid errors when you attempt to get input past the end of a file. When you use the Input or Get statement to read from a file, the file pointer is advanced by the number of bytes read. When the end of a file is reached, EOF returns the value "True" (-1).</paragraph>
<embed href="text/sbasic/shared/00000003.xhp#errorcode"/>
<embed href="text/sbasic/shared/00000003.xhp#err5"/>
<embed href="text/sbasic/shared/00000003.xhp#err52"/>
<paragraph role="heading" id="hd_id3154046" xml-lang="en-US" level="2" l10n="U" oldref="10">Example:</paragraph>
<bascode>
<paragraph role="bascode" localize="false" xml-lang="en-US">Sub ExampleWorkWithAFile</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">Dim iNumber As Integer</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">Dim sLine As String</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">Dim aFile As String</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">Dim sMsg As String</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">    aFile = "c:\data.txt"</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">    iNumber = Freefile</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">    Open aFile For Output As #iNumber</paragraph>
<paragraph role="bascode" id="par_id3153360" xml-lang="en-US" l10n="U" oldref="19">    Print #iNumber, "First line of text"</paragraph>
<paragraph role="bascode" id="par_id3148797" xml-lang="en-US" l10n="U" oldref="20">    Print #iNumber, "Another line of text"</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">    Close #iNumber</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">    iNumber = Freefile</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">    Open aFile For Input As iNumber</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">    While Not eof(iNumber)</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">        Line Input #iNumber, sLine</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">        If sLine &lt;&gt;"" Then</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">            sMsg = sMsg &amp; sLine &amp; chr(13)</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">        End If</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">    Wend</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">    Close #iNumber</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">    MsgBox sMsg</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">End Sub</paragraph>
</bascode>
</body>
</helpdocument>