| .\" zip_source_zip.mdoc -- create data source from zip file |
| .\" Copyright (C) 2004-2014 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 August 2, 2014 |
| .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_add 3 , |
| .Xr zip_replace 3 , |
| .Xr zip_source 3 |
| .Sh AUTHORS |
| .An -nosplit |
| .An Dieter Baron Aq Mt dillo@nih.at |
| and |
| .An Thomas Klausner Aq Mt tk@giga.or.at |
