liblzma/lzma/lzma2_decoder.c

60 	lzma_lzma2_coder *restrict coder = coder_ptr;
65 	while (*in_pos < in_size || coder->sequence == SEQ_LZMA)
66 	switch (coder->sequence) {
78 			coder->need_properties = true;
79 			coder->need_dictionary_reset = true;
80 		} else if (coder->need_dictionary_reset) {
87 			coder->uncompressed_size = (control & 0x1F) << 16;
88 			coder->sequence = SEQ_UNCOMPRESSED_1;
95 				coder->need_properties = false;
96 				coder->next_sequence = SEQ_PROPERTIES;
98 			} else if (coder->need_properties) {
102 				coder->next_sequence = SEQ_LZMA;
108 					coder->lzma.reset(coder->lzma.coder,
109 							&coder->options);
117 			coder->sequence = SEQ_COMPRESSED_0;
118 			coder->next_sequence = SEQ_COPY;
121 		if (coder->need_dictionary_reset) {
124 			coder->need_dictionary_reset = false;
133 		coder->uncompressed_size += (uint32_t)(in[(*in_pos)++]) << 8;
134 		coder->sequence = SEQ_UNCOMPRESSED_2;
138 		coder->uncompressed_size += in[(*in_pos)++] + 1U;
139 		coder->sequence = SEQ_COMPRESSED_0;
140 		coder->lzma.set_uncompressed(coder->lzma.coder,
141 				coder->uncompressed_size, false);
145 		coder->compressed_size = (uint32_t)(in[(*in_pos)++]) << 8;
146 		coder->sequence = SEQ_COMPRESSED_1;
150 		coder->compressed_size += in[(*in_pos)++] + 1U;
151 		coder->sequence = coder->next_sequence;
155 		if (lzma_lzma_lclppb_decode(&coder->options, in[(*in_pos)++]))
158 		coder->lzma.reset(coder->lzma.coder, &coder->options);
160 		coder->sequence = SEQ_LZMA;
165 		// coder->compressed_size later.
169 		const lzma_ret ret = coder->lzma.code(coder->lzma.coder,
172 		// Validate and update coder->compressed_size.
174 		if (in_used > coder->compressed_size)
177 		coder->compressed_size -= in_used;
186 		if (coder->compressed_size != 0)
189 		coder->sequence = SEQ_CONTROL;
195 		dict_write(dict, in, in_pos, in_size, &coder->compressed_size);
196 		if (coder->compressed_size != 0)
199 		coder->sequence = SEQ_CONTROL;
215 	lzma_lzma2_coder *coder = coder_ptr;
217 	assert(coder->lzma.end == NULL);
218 	lzma_free(coder->lzma.coder, allocator);
220 	lzma_free(coder, allocator);
231 	lzma_lzma2_coder *coder = lz->coder;
232 	if (coder == NULL) {
233 		coder = lzma_alloc(sizeof(lzma_lzma2_coder), allocator);
234 		if (coder == NULL)
237 		lz->coder = coder;
241 		coder->lzma = LZMA_LZ_DECODER_INIT;
246 	coder->sequence = SEQ_CONTROL;
247 	coder->need_properties = true;
248 	coder->need_dictionary_reset = options->preset_dict == NULL
251 	return lzma_lzma_decoder_create(&coder->lzma,