.\" ZIP_SOURCE_GET_ARGS -- validate and cast arguments to source callback
.\" Copyright (C) 2014-2017 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>
.\"
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.Dd December 18, 2017
.Dt ZIP_SOURCE_GET_ARGS 3
.Os
.Sh NAME
.Nm ZIP_SOURCE_GET_ARGS
.Nd validate and cast arguments to source callback
.Sh LIBRARY
libzip (-lzip)
.Sh SYNOPSIS
.In zip.h
.Ft type *
.Fn ZIP_SOURCE_GET_ARGS "type" "void *data" "zip_uint64_t len" "zip_error_t *error"
.Sh DESCRIPTION
The
.Fn ZIP_SOURCE_GET_ARGS
macro casts
.Ar data
to a pointer to
.Ar type .
.Sh RETURN VALUES
On success,
.Fn ZIP_SOURCE_GET_ARGS
returns
.Ar data .
In case of error, it returns
.Dv NULL
and sets
.Ar error .
.Sh ERRORS
.Fn ZIP_SOURCE_GET_ARGS
fails if:
.Bl -tag -width Er
.It Bq Er ZIP_ER_INVAL
.Ar len
is less than the size of
.Ar type
.El
.Sh SEE ALSO
.Xr libzip 3 ,
.Xr zip_source_function 3
.Sh HISTORY
.Fn ZIP_SOURCE_GET_ARGS
was added in libzip 1.0.
.Sh AUTHORS
.An -nosplit
.An Dieter Baron Aq Mt dillo@nih.at
and
.An Thomas Klausner Aq Mt tk@giga.or.at