NAME
zip_source_seek_compute_offset —
validate arguments and compute offset
LIBRARY
libzip (-lzip)
SYNOPSIS
#include <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)
HISTORY
zip_source_seek_compute_offset() was added in libzip 1.0.
AUTHORS
Dieter Baron
<
dillo@nih.at> and
Thomas Klausner
<
tk@giga.or.at>