subversion/libsvn_delta/text_delta.c

729   struct apply_baton *ab = (struct apply_baton *) baton;
737       if (ab->result_digest)
741           err = svn_checksum_final(&md5_checksum, ab->md5_context, ab->pool);
743             memcpy(ab->result_digest, md5_checksum->digest,
747       err = svn_error_compose_create(err, svn_stream_close(ab->target));
748       svn_pool_destroy(ab->pool);
755                  || (window->sview_offset >= ab->sbuf_offset
757                          >= ab->sbuf_offset + ab->sbuf_len)));
760   SVN_ERR(size_buffer(&ab->tbuf, &ab->tbuf_size, window->tview_len, ab->pool));
763   if (window->sview_offset != ab->sbuf_offset
764       || window->sview_len > ab->sbuf_size)
766       char *old_sbuf = ab->sbuf;
769       SVN_ERR(size_buffer(&ab->sbuf, &ab->sbuf_size, window->sview_len,
770               ab->pool));
774       if (  (apr_size_t)ab->sbuf_offset + ab->sbuf_len
778             (apr_size_t)(window->sview_offset - ab->sbuf_offset);
779           memmove(ab->sbuf, old_sbuf + start, ab->sbuf_len - start);
780           ab->sbuf_len -= start;
783         ab->sbuf_len = 0;
784       ab->sbuf_offset = window->sview_offset;
788   if (ab->sbuf_len < window->sview_len)
790       len = window->sview_len - ab->sbuf_len;
791       SVN_ERR(svn_stream_read_full(ab->source, ab->sbuf + ab->sbuf_len, &len));
792       if (len != window->sview_len - ab->sbuf_len)
795       ab->sbuf_len = window->sview_len;
801   svn_txdelta_apply_instructions(window, ab->sbuf, ab->tbuf, &len);
807   if (ab->result_digest)
808     SVN_ERR(svn_checksum_update(ab->md5_context, ab->tbuf, len));
810   return svn_stream_write(ab->target, ab->tbuf, &len);
824   struct apply_baton *ab;
826   ab = apr_palloc(subpool, sizeof(*ab));
827   ab->source = source;
828   ab->target = target;
829   ab->pool = subpool;
830   ab->sbuf = NULL;
831   ab->sbuf_size = 0;
832   ab->sbuf_offset = 0;
833   ab->sbuf_len = 0;
834   ab->tbuf = NULL;
835   ab->tbuf_size = 0;
836   ab->result_digest = result_digest;
839     ab->md5_context = svn_checksum_ctx_create(svn_checksum_md5, subpool);
842     ab->error_info = apr_pstrdup(subpool, error_info);
844     ab->error_info = NULL;
847   *handler_baton = ab;