liblzma/common/block_decoder.c

82 	lzma_block_coder *coder = coder_ptr;
84 	switch (coder->sequence) {
89 		const lzma_ret ret = coder->next.code(coder->next.coder,
98 		if (update_size(&coder->compressed_size, in_used,
99 					coder->compressed_limit)
100 				|| update_size(&coder->uncompressed_size,
102 					coder->block->uncompressed_size))
105 		if (!coder->ignore_check)
106 			lzma_check_update(&coder->check, coder->block->check,
114 		if (!is_size_valid(coder->compressed_size,
115 					coder->block->compressed_size)
116 				|| !is_size_valid(coder->uncompressed_size,
117 					coder->block->uncompressed_size))
120 		// Copy the values into coder->block. The caller
122 		coder->block->compressed_size = coder->compressed_size;
123 		coder->block->uncompressed_size = coder->uncompressed_size;
125 		coder->sequence = SEQ_PADDING;
132 		while (coder->compressed_size & 3) {
138 			// coder->block already, and won't be modified by
140 			++coder->compressed_size;
146 		if (coder->block->check == LZMA_CHECK_NONE)
149 		if (!coder->ignore_check)
150 			lzma_check_finish(&coder->check, coder->block->check);
152 		coder->sequence = SEQ_CHECK;
157 		const size_t check_size = lzma_check_size(coder->block->check);
158 		lzma_bufcpy(in, in_pos, in_size, coder->block->raw_check,
159 				&coder->check_pos, check_size);
160 		if (coder->check_pos < check_size)
164 		// coder->check.buffer may be uninitialized
166 		if (!coder->ignore_check
167 				&& lzma_check_is_supported(coder->block->check)
168 				&& memcmp(coder->block->raw_check,
169 					coder->check.buffer.u8,
184 	lzma_block_coder *coder = coder_ptr;
185 	lzma_next_end(&coder->next, allocator);
186 	lzma_free(coder, allocator);
204 	// Allocate *next->coder if needed.
205 	lzma_block_coder *coder = next->coder;
206 	if (coder == NULL) {
207 		coder = lzma_alloc(sizeof(lzma_block_coder), allocator);
208 		if (coder == NULL)
211 		next->coder = coder;
214 		coder->next = LZMA_NEXT_CODER_INIT;
218 	coder->sequence = SEQ_CODE;
219 	coder->block = block;
220 	coder->compressed_size = 0;
221 	coder->uncompressed_size = 0;
226 	coder->compressed_limit
236 	coder->check_pos = 0;
237 	lzma_check_init(&coder->check, block->check);
239 	coder->ignore_check = block->version >= 1
243 	return lzma_raw_decoder_init(&coder->next, allocator,