report current read offset in zip source

libzip (-lzip)

#include <zip.h>

zip_source_tell(zip_source_t *source);

The function zip_source_tell() returns the current read offset for source. The return value can be passed to zip_source_seek(3) with whence set to SEEK_SET to return to the same location in the source.

Upon successful completion the current read offset is returned. Otherwise, -1 is returned and the error information in source is set to indicate the error.

libzip(3), zip_source(3), zip_source_read(3), zip_source_tell_write(3)

zip_source_tell() was added in libzip 1.0.

Dieter Baron <> and Thomas Klausner <>