helpcontent2/source/text/sbasic/shared/03020301.xhp

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  34 <helpdocument version="1.0">
  35 <meta>
  36 <topic id="textsbasicshared03020301xml" indexer="include" status="PUBLISH">
  37 <title id="tit" xml-lang="en-US">Eof Function [Runtime]</title>
  38 <filename>/text/sbasic/shared/03020301.xhp</filename>
  39 </topic>
  40 <history>
  41 <created date="2003-10-31T00:00:00">Sun Microsystems, Inc.</created>
  42 <lastedited date="2004-09-01T15:24:39">converted from old format - fpe</lastedited>
  43 </history>
  44 </meta>
  45 <body>
  46 <section id="eof">
  47 <bookmark xml-lang="en-US" branch="index" id="bm_id3154598"><bookmark_value>Eof function</bookmark_value>
  48 </bookmark>
  49 <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>
  50 <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>
  51 </section>
  52 <paragraph role="heading" id="hd_id3149119" xml-lang="en-US" level="2" l10n="U" oldref="3">Syntax:</paragraph>
  53 <paragraph role="code" id="par_id3147399" xml-lang="en-US" l10n="U" oldref="4">Eof (intexpression As Integer)</paragraph>
  54 <paragraph role="heading" id="hd_id3153539" xml-lang="en-US" level="2" l10n="U" oldref="5">Return value:</paragraph>
  55 <paragraph role="paragraph" id="par_id3156027" xml-lang="en-US" l10n="U" oldref="6">Bool</paragraph>
  56 <paragraph role="heading" id="hd_id3152924" xml-lang="en-US" level="2" l10n="U" oldref="7">Parameters:</paragraph>
  57 <paragraph role="paragraph" id="par_id3153990" xml-lang="en-US" l10n="U" oldref="8">
  58 <emph>Intexpression:</emph> Any integer expression that evaluates to the number of an open file.</paragraph>
  59 <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>
  60 <embed href="text/sbasic/shared/00000003.xhp#errorcode"/>
  61 <embed href="text/sbasic/shared/00000003.xhp#err5"/>
  62 <embed href="text/sbasic/shared/00000003.xhp#err52"/>
  63 <paragraph role="heading" id="hd_id3154046" xml-lang="en-US" level="2" l10n="U" oldref="10">Example:</paragraph>
  64 <paragraph role="code" id="par_id3143270" xml-lang="en-US" l10n="U" oldref="11">Sub ExampleWorkWithAFile</paragraph>
  65 <paragraph role="code" id="par_id3150670" xml-lang="en-US" l10n="U" oldref="12">Dim iNumber As Integer</paragraph>
  66 <paragraph role="code" id="par_id3154143" xml-lang="en-US" l10n="U" oldref="13">Dim sLine As String</paragraph>
  67 <paragraph role="code" id="par_id3148943" xml-lang="en-US" l10n="U" oldref="14">Dim aFile As String</paragraph>
  68 <paragraph role="code" id="par_id3153897" xml-lang="en-US" l10n="U" oldref="37">Dim sMsg as String</paragraph>
  69 <paragraph role="code" id="par_id3156344" xml-lang="en-US" l10n="U" oldref="15">aFile = "c:\data.txt"</paragraph>
  70 <paragraph role="code" id="par_id3148663" xml-lang="en-US" l10n="U" oldref="17">iNumber = Freefile</paragraph>
  71 <paragraph role="code" id="par_id3153379" xml-lang="en-US" l10n="U" oldref="18">Open aFile For Output As #iNumber</paragraph>
  72 <paragraph role="code" id="par_id3153360" xml-lang="en-US" l10n="U" oldref="19">Print #iNumber, "First line of text"</paragraph>
  73 <paragraph role="code" id="par_id3148797" xml-lang="en-US" l10n="U" oldref="20">Print #iNumber, "Another line of text"</paragraph>
  74 <paragraph role="code" id="par_id3154684" xml-lang="en-US" l10n="U" oldref="21">Close #iNumber</paragraph>
  75 <paragraph role="code" id="par_id3153104" xml-lang="en-US" l10n="U" oldref="25">iNumber = Freefile</paragraph>
  76 <paragraph role="code" id="par_id3144761" xml-lang="en-US" l10n="U" oldref="26">Open aFile For Input As iNumber</paragraph>
  77 <paragraph role="code" id="par_id3153193" xml-lang="en-US" l10n="U" oldref="27">While not eof(iNumber)</paragraph>
  78 <paragraph role="code" id="par_id3158408" xml-lang="en-US" l10n="U" oldref="28">Line Input #iNumber, sLine</paragraph>
  79 <paragraph role="code" id="par_id3149203" xml-lang="en-US" l10n="U" oldref="29">If sLine &lt;&gt;"" then</paragraph>
  80 <paragraph role="code" id="par_id3153770" xml-lang="en-US" l10n="U" oldref="30">sMsg = sMsg &amp; sLine &amp; chr(13)</paragraph>
  81 <paragraph role="code" id="par_id3153367" xml-lang="en-US" l10n="U" oldref="32">end if</paragraph>
  82 <paragraph role="code" id="par_id3147318" xml-lang="en-US" l10n="U" oldref="33">wend</paragraph>
  83 <paragraph role="code" id="par_id3152939" xml-lang="en-US" l10n="U" oldref="34">Close #iNumber</paragraph>
  84 <paragraph role="code" id="par_id3153726" xml-lang="en-US" l10n="U" oldref="38">Msgbox sMsg</paragraph>
  85 <paragraph role="code" id="par_id3153092" xml-lang="en-US" l10n="U" oldref="35">End Sub</paragraph>
  86 </body>
  87 </helpdocument>