| .\" zip_register_progress_callback_with_state.mdoc -- provide updates during zip_close |
| .\" Copyright (C) 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_REGISTER_PROGRESS_CALLBACK_WITH_STATE 3 |
| .Os |
| .Sh NAME |
| .Nm zip_register_progress_callback_with_state |
| .Nd provide updates during zip_close |
| .Sh LIBRARY |
| libzip (-lzip) |
| .Sh SYNOPSIS |
| .In zip.h |
| .Vt typedef void (*zip_progress_callback)(zip_t *, double, void *); |
| .Ft void |
| .Fn zip_register_progress_callback_with_state "zip_t *archive" "double precision" "zip_progress_callback callback" "void (*ud_free)(void *)" "void *ud" |
| .Sh DESCRIPTION |
| The |
| .Fn zip_register_progress_callback_with_state |
| function registers a callback function |
| .Ar callback |
| for the zip archive |
| .Ar archive . |
| The |
| .Ar precision |
| argument is a double in the range from 0.00 to 1.0 that defines the |
| smallest change for which the callback should be called (to avoid too |
| frequent calls). |
| The |
| .Ar ud_free |
| function is called during cleanup for deleting the userdata supplied in |
| .Ar ud . |
| .Pp |
| The callback function is called during |
| .Xr zip_close 3 |
| in regular intervals (after every zip archive entry that's completely |
| written to disk, and while writing data for entries) with zip archive |
| .Ar archive , |
| the current progression state as a |
| .Vt double , |
| and the user-provided user-data |
| .Ar ud |
| as arguments. |
| The progression state is a |
| .Vt double |
| in the range from 0.0 to 1.0. |
| This can be used to provide progress indicators for user interfaces. |
| .Sh SEE ALSO |
| .Xr libzip 3 , |
| .Xr zip_close 3 |
| .Sh HISTORY |
| .Fn zip_register_progress_callback_with_state |
| was added in libzip 1.3.0. |
| .Sh AUTHORS |
| .An -nosplit |
| .An Dieter Baron Aq Mt dillo@nih.at |
| and |
| .An Thomas Klausner Aq Mt tk@giga.or.at |