| .\" zip_fseek.mdoc -- seek in file |
| .\" Copyright (C) 2016-2017 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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| .\" 3. The names of the authors may not be used to endorse or promote |
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| .Dd November 13, 2021 |
| .Dt ZIP_FSEEK 3 |
| .Os |
| .Sh NAME |
| .Nm zip_fseek , |
| .Nm zip_file_is_seekable |
| .Nd seek in file |
| .Sh LIBRARY |
| libzip (-lzip) |
| .Sh SYNOPSIS |
| .In zip.h |
| .Ft zip_int8_t |
| .Fn zip_fseek "zip_file_t *file" "zip_int64_t offset" "int whence" |
| .Ft int |
| .Fn zip_file_is_seekable "zip_file_t *file" |
| .Sh DESCRIPTION |
| The |
| .Fn zip_fseek |
| function seeks to the specified |
| .Ar offset |
| relative to |
| .Ar whence , |
| just like |
| .Xr fseek 3 . |
| .Pp |
| .Nm |
| only works on uncompressed (stored), unencrypted data. |
| When called on compressed or encrypted data it will return an error. |
| .Pp |
| The |
| .Fn zip_file_is_seekable |
| function returns 1 if a file is seekable. |
| .Sh RETURN VALUES |
| If successful, |
| .Fn zip_fseek |
| returns 0. |
| Otherwise, \-1 is returned. |
| .Pp |
| .Fn zip_file_is_seekable |
| returns 1 if a file is seekable and 0 if not. |
| On an invalid argument, it returns \-1. |
| .Sh SEE ALSO |
| .Xr libzip 3 , |
| .Xr zip_fclose 3 , |
| .Xr zip_fopen 3 , |
| .Xr zip_fread 3 , |
| .Xr zip_ftell 3 |
| .Sh HISTORY |
| .Fn zip_fseek |
| was added in libzip 1.2.0. |
| .Fn zip_file_is_seekable |
| was added in libzip 1.9.0. |
| .Sh AUTHORS |
| .An -nosplit |
| .An Dieter Baron Aq Mt dillo@nih.at |
| and |
| .An Thomas Klausner Aq Mt tk@giga.or.at |