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Edit File: zip_source_zip.3

.\" zip_source_zip.mdoc -- create data source from zip file .\" Copyright (C) 2004-2018 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 18, 2017 .Dt ZIP_SOURCE_ZIP 3 .Os .Sh NAME .Nm zip_source_zip .Nd create data source from zip file .Sh LIBRARY libzip (-lzip) .Sh SYNOPSIS .In zip.h .Ft zip_source_t * .Fn zip_source_zip "zip_t *archive" "zip_t *srcarchive" "zip_uint64_t srcidx" "zip_flags_t flags" "zip_uint64_t start" "zip_int64_t len" .Sh DESCRIPTION The function .Fn zip_source_zip creates a zip source from a file in a zip archive. The .Ar srcarchive argument is the (open) zip archive containing the source zip file at index .Ar srcidx . .Ar len bytes from offset .Ar start will be used in the zip_source. If .Ar len is 0 or \-1, the rest of the file, starting from .Ar start , is used. If .Ar start is zero and .Ar len is \-1, the whole file will be copied without decompressing it. .Pp Supported flags are: .Bl -tag -width XZIPXFLXRECOMPRESSXXX .It Dv ZIP_FL_UNCHANGED Try to get the original data without any changes that may have been made to .Ar srcarchive after opening it. .It Dv ZIP_FL_RECOMPRESS When adding the data from .Ar srcarchive , re-compress it using the current settings instead of copying the compressed data. .El .Sh RETURN VALUES Upon successful completion, the created source is returned. Otherwise, .Dv NULL is returned and the error code in .Ar archive is set to indicate the error. .Sh ERRORS .Fn zip_source_zip fails if: .Bl -tag -width Er .It Bq Er ZIP_ER_CHANGED Unchanged data was requested, but it is not available. .It Bq Er ZIP_ER_INVAL .Ar srcarchive , .Ar srcidx , .Ar start , or .Ar len are invalid. .It Bq Er ZIP_ER_MEMORY Required memory could not be allocated. .El Additionally, it can return all error codes from .Fn zip_stat_index and .Fn zip_fopen_index . .Sh SEE ALSO .Xr libzip 3 , .Xr zip_file_add 3 , .Xr zip_file_replace 3 , .Xr zip_source 3 .Sh HISTORY .Fn zip_source_zip 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