NAME
       zip_source_file - create data source from a file
LIBRARY
       libzip (-lzip)
SYNOPSIS
       struct  zip_source  *  zip_source_file(struct  zip *archive, const char
       *fname, off_t start, off_t len);
DESCRIPTION
       The  function  zip_source_file  creates  a  zip  source  from  a  file.
       zip_source_file  opens fname and reads len bytes from offset start from
       it.  If len is 0 or -1, the whole file (starting from start ) is  used.
RETURN VALUES
       Upon successful completion, the created source is returned.  Otherwise,
       NULL is returned and the error code in archive is set to  indicate  the
       error.
ERRORS
       zip_source_file fails if:
              [ZIP_ER_INVAL]
                  fname, start, or len are invalid.
              [ZIP_ER_MEMORY]
                  Required memory could not be allocated.
              [ZIP_ER_OPEN]
                  Opening fname failed.
SEE ALSO
       libzip(3),     zip_add(3),     zip_replace(3),    zip_source_buffer(3),
       zip_source_filep(3),    zip_source_free(3),     zip_source_function(3),
       zip_source_zip(3)
AUTHORS
       Dieter Baron <dillo@giga.or.at> and Thomas Klausner <tk@giga.or.at>