| .\" zip_source_window.mdoc -- create zip data source overlay |
| .\" Copyright (C) 2021 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 April 29, 2021 |
| .Dt ZIP_SOURCE_WINDOW 3 |
| .Os |
| .Sh NAME |
| .Nm zip_source_window_create |
| .Nd create zip data source overlay |
| .Sh LIBRARY |
| libzip (-lzip) |
| .Sh SYNOPSIS |
| .In zip.h |
| .Ft zip_source_t * |
| .Fn zip_source_window_create "zip_source_t *source" "zip_uint64_t start" "zip_int64_t len" "zip_error_t *error" |
| .Sh DESCRIPTION |
| The |
| .Fn zip_source_window_create |
| function create a zip source from an underlying zip source, |
| restricting access to a particular window starting at byte |
| .Ar start |
| and having size |
| .Ar len . |
| If |
| .Ar len |
| is \-1, the window spans to the end of the underlying source. |
| .Sh RETURN VALUES |
| Upon successful completion, the created source is returned. |
| Otherwise, |
| .Dv NULL |
| is returned and the error code in |
| .Ar error |
| is set to indicate the error. |
| .Sh ERRORS |
| .Fn zip_source_window_create |
| fails if: |
| .Bl -tag -width Er |
| .It Bq Er ZIP_ER_INVAL |
| .Ar src |
| is |
| .Dv NULL ; |
| there is an integer overflow adding |
| .Ar start |
| and |
| .Ar len ; |
| or |
| .Ar len |
| is less than \-1. |
| .It Bq Er ZIP_ER_MEMORY |
| Required memory could not be allocated. |
| .El |
| .Sh SEE ALSO |
| .Xr libzip 3 , |
| .Xr zip_source 3 |
| .Xr zip_source 3 |
| .Sh HISTORY |
| .Fn zip_source_window_create |
| was added in libzip 1.8.0. |
| .Sh AUTHORS |
| .An -nosplit |
| .An Dieter Baron Aq Mt dillo@nih.at |
| and |
| .An Thomas Klausner Aq Mt tk@giga.or.at |
