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
80
81
82
83
84
85
86
87
88

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


<!--***********************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org 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 Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************-->
	
<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>