166 lines
3.3 KiB
HTML
166 lines
3.3 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of IO::InnerFile</TITLE>
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</HEAD><BODY>
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<H1>IO::InnerFile</H1>
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Section: User Contributed Perl Documentation (3pm)<BR>Updated: 2019-02-28<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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IO::InnerFile - define a file inside another file
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<PRE>
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### Read a subset of a file:
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$inner = IO::InnerFile->new($fh, $start, $length);
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while (<$inner>) {
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...
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}
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</PRE>
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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If you have a filehandle that can <B>seek()</B> and <B>tell()</B>, then you
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can open an IO::InnerFile on a range of the underlying file.
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<A NAME="lbAE"> </A>
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<H2>PUBLIC INTERFACE</H2>
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<DL COMPACT>
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<DT id="1">new <FONT SIZE="-1">FILEHANDLE,</FONT> [<FONT SIZE="-1">START,</FONT> [<FONT SIZE="-1">LENGTH</FONT>]]<DD>
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<I>Class method, constructor.</I>
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Create a new inner-file opened on the given <FONT SIZE="-1">FILEHANDLE,</FONT>
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from bytes <FONT SIZE="-1">START</FONT> to <FONT SIZE="-1">START+LENGTH.</FONT> Both <FONT SIZE="-1">START</FONT> and <FONT SIZE="-1">LENGTH</FONT>
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default to 0; negative values are silently coerced to zero.
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<P>
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Note that <FONT SIZE="-1">FILEHANDLE</FONT> must be able to <B>seek()</B> and <B>tell()</B>, in addition
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to whatever other methods you may desire for reading it.
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<DT id="2">set_length <FONT SIZE="-1">LENGTH</FONT><DD>
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<DT id="3">get_length<DD>
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<DT id="4">add_length <FONT SIZE="-1">NBYTES</FONT><DD>
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<I>Instance methods.</I>
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Get/set the virtual length of the inner file.
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<DT id="5">set_start <FONT SIZE="-1">START</FONT><DD>
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<DT id="6">get_start<DD>
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<DT id="7">add_start <FONT SIZE="-1">NBYTES</FONT><DD>
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<I>Instance methods.</I>
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Get/set the virtual start position of the inner file.
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<DT id="8">binmode<DD>
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<DT id="9">close<DD>
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<DT id="10">flush<DD>
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<DT id="11">getc<DD>
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<DT id="12">getline<DD>
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<DT id="13">print <FONT SIZE="-1">LIST</FONT><DD>
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<DT id="14">printf <FONT SIZE="-1">LIST</FONT><DD>
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<DT id="15">read <FONT SIZE="-1">BUF, NBYTES</FONT><DD>
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<DT id="16">readline<DD>
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<DT id="17">seek <FONT SIZE="-1">OFFFSET, WHENCE</FONT><DD>
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<DT id="18">tell<DD>
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<DT id="19">write <FONT SIZE="-1">ARGS...</FONT><DD>
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<I>Instance methods.</I>
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Standard filehandle methods.
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</DL>
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<A NAME="lbAF"> </A>
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<H2>VERSION</H2>
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<TT>$Id:</TT> InnerFile.pm,v 1.4 2005/02/10 21:21:53 dfs Exp $
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<A NAME="lbAG"> </A>
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<H2>AUTHOR</H2>
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Original version by Doru Petrescu (<A HREF="mailto:pdoru@kappa.ro">pdoru@kappa.ro</A>).
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<P>
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Documentation and by Eryq (<A HREF="mailto:eryq@zeegee.com">eryq@zeegee.com</A>).
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<P>
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Currently maintained by Dianne Skoll (<A HREF="mailto:dfs@roaringpenguin.com">dfs@roaringpenguin.com</A>).
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="20"><A HREF="#lbAB">NAME</A><DD>
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<DT id="21"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="22"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="23"><A HREF="#lbAE">PUBLIC INTERFACE</A><DD>
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<DT id="24"><A HREF="#lbAF">VERSION</A><DD>
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<DT id="25"><A HREF="#lbAG">AUTHOR</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:46 GMT, March 31, 2021
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</BODY>
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</HTML>
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