150     z_stream strm;  in build_index()  local
155     strm.zalloc = Z_NULL;  in build_index()
156     strm.zfree = Z_NULL;  in build_index()
157     strm.opaque = Z_NULL;  in build_index()
158     strm.avail_in = 0;  in build_index()
159     strm.next_in = Z_NULL;  in build_index()
160     ret = inflateInit2(&strm, 47);      /* automatic zlib or gzip decoding */  in build_index()
169     strm.avail_out = 0;  in build_index()
172         strm.avail_in = fread(input, 1, CHUNK, in);  in build_index()
177         if (strm.avail_in == 0) {  in build_index()
181         strm.next_in = input;  in build_index()
186             if (strm.avail_out == 0) {  in build_index()
187                 strm.avail_out = WINSIZE;  in build_index()
188                 strm.next_out = window;  in build_index()
193             totin += strm.avail_in;  in build_index()
194             totout += strm.avail_out;  in build_index()
195             ret = inflate(&strm, Z_BLOCK);      /* return at end of block */  in build_index()
196             totin -= strm.avail_in;  in build_index()
197             totout -= strm.avail_out;  in build_index()
214             if ((strm.data_type & 128) && !(strm.data_type & 64) &&  in build_index()
216                 index = addpoint(index, strm.data_type & 7, totin,  in build_index()
217                                  totout, strm.avail_out, window);  in build_index()
224         } while (strm.avail_in != 0);  in build_index()
228     (void)inflateEnd(&strm);  in build_index()
236     (void)inflateEnd(&strm);  in build_index()
253     z_stream strm;  in extract()  local
269     strm.zalloc = Z_NULL;  in extract()
270     strm.zfree = Z_NULL;  in extract()
271     strm.opaque = Z_NULL;  in extract()
272     strm.avail_in = 0;  in extract()
273     strm.next_in = Z_NULL;  in extract()
274     ret = inflateInit2(&strm, -15);         /* raw inflate */  in extract()
286         (void)inflatePrime(&strm, here->bits, ret >> (8 - here->bits));  in extract()
288     (void)inflateSetDictionary(&strm, here->window, WINSIZE);  in extract()
292     strm.avail_in = 0;  in extract()
297             strm.avail_out = len;  in extract()
298             strm.next_out = buf;  in extract()
302             strm.avail_out = WINSIZE;  in extract()
303             strm.next_out = discard;  in extract()
307             strm.avail_out = (unsigned)offset;  in extract()
308             strm.next_out = discard;  in extract()
314             if (strm.avail_in == 0) {  in extract()
315                 strm.avail_in = fread(input, 1, CHUNK, in);  in extract()
320                 if (strm.avail_in == 0) {  in extract()
324                 strm.next_in = input;  in extract()
326             ret = inflate(&strm, Z_NO_FLUSH);       /* normal inflate */  in extract()
333         } while (strm.avail_out != 0);  in extract()
343     ret = skip ? 0 : len - strm.avail_out;  in extract()
347     (void)inflateEnd(&strm);  in extract()