libarchive/libarchive/archive_read_support_format_cab.c

104 	} br;
2142 	ds->br.cache_buffer = 0;
2143 	ds->br.cache_avail = 0;
2221 #define lzx_br_has(br, n)	((br)->cache_avail >= n)
2223 #define lzx_br_bits(br, n)				\
2224 	(((uint32_t)((br)->cache_buffer >>		\
2225 		((br)->cache_avail - (n)))) & cache_masks[n])
2226 #define lzx_br_bits_forced(br, n)			\
2227 	(((uint32_t)((br)->cache_buffer <<		\
2228 		((n) - (br)->cache_avail))) & cache_masks[n])
2234 #define lzx_br_read_ahead_0(strm, br, n)	\
2235 	(lzx_br_has((br), (n)) || lzx_br_fillup(strm, br))
2239 #define lzx_br_read_ahead(strm, br, n)	\
2240 	(lzx_br_read_ahead_0((strm), (br), (n)) || lzx_br_has((br), (n)))
2243 #define lzx_br_consume(br, n)	((br)->cache_avail -= (n))
2244 #define lzx_br_consume_unaligned_bits(br) ((br)->cache_avail &= ~0x0f)
2246 #define lzx_br_is_unaligned(br)	((br)->cache_avail & 0x0f)
2268 lzx_br_fillup(struct lzx_stream *strm, struct lzx_br *br)
2273 	int n = CACHE_BITS - br->cache_avail;
2279 				br->cache_buffer =
2290 				br->cache_avail += 8 * 8;
2296 				br->cache_buffer =
2297 		 		   (br->cache_buffer << 48) |
2306 				br->cache_avail += 6 * 8;
2321 				br->odd = *strm->next_in++;
2323 				br->have_odd = 1;
2327 		br->cache_buffer =
2328 		   (br->cache_buffer << 16) |
2332 		br->cache_avail += 16;
2338 lzx_br_fixup(struct lzx_stream *strm, struct lzx_br *br)
2340 	int n = CACHE_BITS - br->cache_avail;
2342 	if (br->have_odd && n >= 16 && strm->avail_in > 0) {
2343 		br->cache_buffer =
2344 		   (br->cache_buffer << 16) |
2345 		   ((uint16_t)(*strm->next_in)) << 8 | br->odd;
2348 		br->cache_avail += 16;
2349 		br->have_odd = 0;
2356 	strm->ds->br.cache_avail = 0;
2357 	strm->ds->br.have_odd = 0;
2404 	lzx_br_fixup(strm, &(ds->br));
2424 	struct lzx_br *br = &(ds->br);
2430 			if (!lzx_br_read_ahead(strm, br, 1)) {
2436 			ds->translation = lzx_br_bits(br, 1);
2437 			lzx_br_consume(br, 1);
2441 				if (!lzx_br_read_ahead(strm, br, 32)) {
2447 				ds->translation_size = lzx_br_bits(br, 16);
2448 				lzx_br_consume(br, 16);
2450 				ds->translation_size |= lzx_br_bits(br, 16);
2451 				lzx_br_consume(br, 16);
2455 			if (!lzx_br_read_ahead(strm, br, 3)) {
2461 			ds->block_type = lzx_br_bits(br, 3);
2462 			lzx_br_consume(br, 3);
2474 			if (!lzx_br_read_ahead(strm, br, 24)) {
2480 			ds->block_size = lzx_br_bits(br, 8);
2481 			lzx_br_consume(br, 8);
2483 			ds->block_size |= lzx_br_bits(br, 16);
2484 			lzx_br_consume(br, 16);
2502 			if (lzx_br_is_unaligned(br))
2503 				lzx_br_consume_unaligned_bits(br);
2505 				if (lzx_br_read_ahead(strm, br, 16))
2506 					lzx_br_consume(br, 16);
2525 				if (lzx_br_has(br, 32)) {
2526 					u16 = lzx_br_bits(br, 16);
2527 					lzx_br_consume(br, 16);
2529 					u16 = lzx_br_bits(br, 16);
2530 					lzx_br_consume(br, 16);
2533 				} else if (lzx_br_has(br, 16)) {
2534 					u16 = lzx_br_bits(br, 16);
2535 					lzx_br_consume(br, 16);
2539 				if (ds->rbytes_avail < 4 && ds->br.have_odd) {
2541 					    ds->br.odd;
2542 					ds->br.have_odd = 0;
2630 			if (!lzx_br_read_ahead(strm, br, 3 * ds->at.len_size)) {
2638 				ds->at.bitlen[i] = lzx_br_bits(br, 3);
2640 				lzx_br_consume(br, 3);
2749 	struct lzx_br bre = ds->br;
2778 					ds->br = bre;
3005 	ds->br = bre;
3023 	struct lzx_br *br = &(ds->br);
3029 		if (!lzx_br_read_ahead(strm, br, 4)) {
3033 		ds->pt.bitlen[i] = lzx_br_bits(br, 4);
3035 		lzx_br_consume(br, 4);
3048 	struct lzx_br *br = &(ds->br);
3060 		if (!lzx_br_read_ahead(strm, br, ds->pt.max_bits))
3062 		rbits = lzx_br_bits(br, ds->pt.max_bits);
3066 			if (!lzx_br_read_ahead(strm, br, ds->pt.bitlen[c]+4))
3068 			lzx_br_consume(br, ds->pt.bitlen[c]);
3069 			same = lzx_br_bits(br, 4) + 4;
3072 			lzx_br_consume(br, 4);
3077 			if (!lzx_br_read_ahead(strm, br, ds->pt.bitlen[c]+5))
3079 			lzx_br_consume(br, ds->pt.bitlen[c]);
3080 			same = lzx_br_bits(br, 5) + 20;
3083 			lzx_br_consume(br, 5);
3088 			if (!lzx_br_read_ahead(strm, br,
3091 			lzx_br_consume(br, ds->pt.bitlen[c]);
3092 			same = lzx_br_bits(br, 1) + 4;
3095 			lzx_br_consume(br, 1);
3096 			rbits = lzx_br_bits(br, ds->pt.max_bits);
3098 			lzx_br_consume(br, ds->pt.bitlen[c]);
3107 			lzx_br_consume(br, ds->pt.bitlen[c]);