Man page - zip_source_seek_compute_offset(3)
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apt-get install libzip-dev
Manual
ZIP_SOURCE_SEEK_COMPUTE_ (3) Library Functions Manual ZIP_SOURCE_SEEK_COMPUTE_ (3)
NAME
zip_source_seek_compute_offset ā validate arguments and compute offset
LIBRARY
libzip (-lzip)
SYNOPSIS
#include <zip.h>
zip_int64_t
zip_source_seek_compute_offset ( zip_uint64_tĀ offset , zip_uint64_tĀ length , voidĀ *data , zip_uint64_tĀ data_length , zip_error_tĀ *error );
DESCRIPTION
Use this function to compute the offset for a ZIP_SOURCE_SEEK or ZIP_SOURCE_SEEK_WRITE command. data and data_length are the arguments to the source callback, offset is the current offset and length is the length of the source data or, for ZIP_SOURCE_SEEK_WRITE, the amount of data written.
RETURN VALUES
On success, it returns the new offset, on error it returns -1 and sets error .
ERRORS
zip_source_seek_compute_offset () fails if:
[ZIP_ER_INVAL]
One of the arguments is invalid or the seek would place the offset outside the data.
SEE ALSO
zip_source_function (3)
HISTORY
zip_source_seek_compute_offset () was added in libzip 1.0.
AUTHORS
Dieter Baron < dillo@nih.at > and Thomas Klausner < wiz@gatalith.at > Debian December 18, 2017 ZIP_SOURCE_SEEK_COMPUTE_OFFSET (3)