NAME

       zip_source_seek_compute_offset - validate arguments and compute offset

LIBRARY

       libzip (-lzip)

SYNOPSIS

       zip.h  zip_int64_t  zip_source_seek_compute_offset  zip_uint64_t  offset  zip_uint64_t  length void *data
       zip_uint64_t data_length zip_error_t *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)

AUTHORS

       Dieter Baron <dillo@nih.at> and Thomas Klausner <tk@giga.or.at>

NiH                                             November 13, 2014              ZIP_SOURCE_SEEK_COMPUTE_OFFSET(1)