| … | |
… | |
| 157 | /* match found at *ref++ */ |
157 | /* match found at *ref++ */ |
| 158 | unsigned int len = 2; |
158 | unsigned int len = 2; |
| 159 | unsigned int maxlen = in_end - ip - len; |
159 | unsigned int maxlen = in_end - ip - len; |
| 160 | maxlen = maxlen > MAX_REF ? MAX_REF : maxlen; |
160 | maxlen = maxlen > MAX_REF ? MAX_REF : maxlen; |
| 161 | |
161 | |
| 162 | if (expect_false (op + 1 + 3 >= out_end)) |
|
|
| 163 | return 0; |
|
|
| 164 | |
|
|
| 165 | op [- lit - 1] = lit - 1; /* stop run */ |
162 | op [- lit - 1] = lit - 1; /* stop run */ |
| 166 | op -= !lit; /* undo run if length is zero */ |
163 | op -= !lit; /* undo run if length is zero */ |
|
|
164 | |
|
|
165 | if (expect_false (op + 3 + 1 >= out_end)) |
|
|
166 | return 0; |
| 167 | |
167 | |
| 168 | for (;;) |
168 | for (;;) |
| 169 | { |
169 | { |
| 170 | if (expect_true (maxlen > 16)) |
170 | if (expect_true (maxlen > 16)) |
| 171 | { |
171 | { |
| … | |
… | |
| 235 | htab[IDX (hval)] = ip; |
235 | htab[IDX (hval)] = ip; |
| 236 | ip++; |
236 | ip++; |
| 237 | } |
237 | } |
| 238 | while (len--); |
238 | while (len--); |
| 239 | #endif |
239 | #endif |
| 240 | lit = 0; op++; /* start run */ |
|
|
| 241 | continue; |
|
|
| 242 | } |
|
|
| 243 | |
240 | |
| 244 | /* one more literal byte we must copy */ |
|
|
| 245 | |
|
|
| 246 | if (expect_false (op >= out_end)) |
|
|
| 247 | return 0; |
|
|
| 248 | |
|
|
| 249 | lit++; |
|
|
| 250 | *op++ = *ip++; |
|
|
| 251 | |
|
|
| 252 | if (expect_false (lit == MAX_LIT)) |
|
|
| 253 | { |
|
|
| 254 | op [- lit - 1] = lit - 1; /* stop run */ |
|
|
| 255 | lit = 0; op++; /* start run */ |
241 | lit = 0; op++; /* start run */ |
| 256 | } |
242 | } |
|
|
243 | else |
|
|
244 | { |
|
|
245 | /* one more literal byte we must copy */ |
|
|
246 | if (expect_false (op >= out_end)) |
|
|
247 | return 0; |
|
|
248 | |
|
|
249 | lit++; *op++ = *ip++; |
|
|
250 | |
|
|
251 | if (expect_false (lit == MAX_LIT)) |
|
|
252 | { |
|
|
253 | op [- lit - 1] = lit - 1; /* stop run */ |
|
|
254 | lit = 0; op++; /* start run */ |
|
|
255 | } |
|
|
256 | } |
| 257 | } |
257 | } |
| 258 | |
258 | |
| 259 | if (op + 2 >= out_end) |
259 | if (op + 2 > out_end) /* at most 2 bytes can be missing here */ |
| 260 | return 0; |
260 | return 0; |
| 261 | |
261 | |
| 262 | while (ip < in_end) |
262 | while (ip < in_end) |
| 263 | { |
263 | { |
| 264 | lit++; |
|
|
| 265 | *op++ = *ip++; |
264 | lit++; *op++ = *ip++; |
| 266 | } |
265 | } |
| 267 | |
266 | |
| 268 | op [- lit - 1] = lit - 1; /* end run */ |
267 | op [- lit - 1] = lit - 1; /* end run */ |
| 269 | op -= !lit; /* undo run if length is zero */ |
268 | op -= !lit; /* undo run if length is zero */ |
| 270 | |
269 | |
