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+.\" $NiH: zip_open.mdoc,v 1.21 2005/06/09 21:13:12 wiz Exp $
+.\"
+.\" zip_open.mdoc -- open zip archive
+.\" Copyright (C) 2003, 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 December 27, 2003
+.Dt ZIP_OPEN 3
+.Os
+.Sh NAME
+.Nm zip_open
+.Nd open zip archive
+.Sh LIBRARY
+libzip (-lzip)
+.Sh SYNOPSIS
+.In zip.h
+.Ft struct zip *
+.Fn zip_open "const char *path" "int flags" "int *errorp"
+.Sh DESCRIPTION
+The zip archive specified by
+.Ar path
+is opened and a pointer to a
+.Ft struct zip ,
+used to manipulate the archive, is returned.
+The
+.Fa flags
+are specified by
+.Em or Ns No 'ing
+the following values, or 0 for none of them.
+.Bl -tag -offset indent -width ZIP_CHECKCONS
+.It Dv ZIP_CREATE
+Create the archive if it does not exist.
+.It Dv ZIP_EXCL
+Error if archive already exists.
+.It Dv ZIP_CHECKCONS
+Perform additional consistency checks on the archive, and error if
+they fail.
+.El
+.Pp
+If an error occurs and
+.Ar errorp
+is non-NULL, it will be set to the corresponding error code.
+.Sh RETURN VALUES
+Upon successful completion
+.Fn zip_open
+returns a
+.Ft struct zip
+pointer.
+Otherwise,
+.Dv NULL
+is returned and
+.Ar *errorp
+is set to indicate the error.
+.Sh ERRORS
+The archive specified by
+.Ar path
+is opened unless:
+.Bl -tag -width Er
+.It Bq Er ZIP_ER_EXISTS
+The file specified by
+.Ar path
+exists and
+.Dv ZIP_EXCL
+is set.
+.It Bq Er ZIP_ER_INCONS
+Inconsistencies were found in the file specified by
+.Ar path
+and
+.Dv ZIP_CHECKCONS
+was specified.
+.It Bq Er ZIP_ER_INVAL
+The
+.Ar path
+argument is
+.Dv NULL .
+.It Bq Er ZIP_ER_MEMORY
+Required memory could not be allocated.
+.It Bq Er ZIP_ER_NOENT
+The file specified by
+.Ar path
+does not exist and
+.Dv ZIP_CREATE
+is not set.
+.It Bq Er ZIP_ER_NOZIP
+The file specified by
+.Ar path
+is not a zip archive.
+.It Bq Er ZIP_ER_OPEN
+The file specified by
+.Ar path
+could not be opened.
+.It Bq Er ZIP_ER_READ
+A read error occurred; see
+.Va errno
+for details.
+.It Bq Er ZIP_ER_SEEK
+The file specified by
+.Ar path
+does not allow seeks.
+.El
+.Sh SEE ALSO
+.Xr libzip 3 ,
+.Xr zip_close 3 ,
+.Xr zip_error_to_str 3
+.Sh AUTHORS
+.An -nosplit
+.An Dieter Baron Aq dillo@giga.or.at
+and
+.An Thomas Klausner Aq tk@giga.or.at