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+.\" $NiH: zip_fopen.mdoc,v 1.13 2005/06/09 21:13:12 wiz Exp $
+.\"
+.\" zip_fopen.mdoc -- open file in zip archive for reading
+.\" Copyright (C) 2003, 2004, 2005 Dieter Baron and Thomas Klausner
+.\"
+.\" This file is part of libzip, a library to manipulate ZIP archives.
+.\" The authors can be contacted at <libzip@nih.at>
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in
+.\"    the documentation and/or other materials provided with the
+.\"    distribution.
+.\" 3. The names of the authors may not be used to endorse or promote
+.\"    products derived from this software without specific prior
+.\"    written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
+.\" OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
+.\" DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+.\" GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+.\" IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+.\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+.\" IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd April 14, 2004
+.Dt ZIP_FOPEN 3
+.Os
+.Sh NAME
+.Nm zip_fopen ,
+.Nm zip_fopen_index
+.Nd open file in zip archive for reading
+.Sh LIBRARY
+libzip (-lzip)
+.Sh SYNOPSIS
+.In zip.h
+.Ft struct zip_file *
+.Fn zip_fopen "struct zip *archive" "const char *fname" "int flags"
+.Ft struct zip_file *
+.Fn zip_fopen_index "struct zip *archive" "int index" "int flags"
+.Sh DESCRIPTION
+The
+.Fn zip_fopen
+function opens the file name
+.Ar fname
+in
+.Ar archive .
+The
+.Ar flags
+argument specifies how the name lookup should be done, according to
+the values are described in
+.Xr zip_name_locate 3 .
+Also, the following values may be
+.Em or Ns No 'ed
+to it.
+.Bl -tag -offset indent -width ZIP_FL_COMPRESSED
+.It Dv ZIP_FL_COMPRESSED
+Read the compressed data.
+Otherwise the data is uncompressed by
+.Fn zip_fread .
+.It Dv ZIP_FL_UNCHANGED
+Read the original data from the zip archive, ignoring any changes made
+to the file.
+.El
+.Pp
+The
+.Fn zip_fopen_index
+function opens the file at position
+.Ar index .
+.Sh RETURN VALUES
+Upon successful completion, a
+.Ft struct zip_file
+pointer is returned.
+Otherwise,
+.Dv NULL
+is returned and the error code in
+.Ar archive
+is set to indicate the error.
+.Sh ERRORS
+.Bl -tag -width Er
+.It Bq Er ZIP_ER_CHANGED
+The file data has been changed.
+.It Bq Er ZIP_ER_COMPNOTSUPP
+The compression method used is not supported.
+.It Bq Er ZIP_ER_MEMORY
+Required memory could not be allocated.
+.It Bq Er ZIP_ER_READ
+A file read error occurred.
+.It Bq Er ZIP_ER_SEEK
+A file seek error occurred.
+.It Bq Er ZIP_ER_ZLIB
+Initializing the zlib stream failed.
+.El
+.Pp
+The function
+.Fn zip_fopen
+may also fail and set
+.Va zip_err
+for any of the errors specified for the routine
+.Xr zip_name_locate 3 .
+.Pp
+The function
+.Fn zip_fopen_index
+may also fail with
+.Er ZIP_ER_INVAL
+if
+.Ar index
+is invalid.
+.Sh SEE ALSO
+.Xr libzip 3 ,
+.Xr zip_fclose 3 ,
+.Xr zip_fread 3 ,
+.Xr zip_name_locate 3
+.Sh AUTHORS
+.An -nosplit
+.An Dieter Baron Aq dillo@giga.or.at
+and
+.An Thomas Klausner Aq tk@giga.or.at