comparison: src/buffer.c
src/buffer.c
- changeset 290
- d5d6ab809ad3
- parent 270
- 3d80d425543b
equal
deleted
inserted
replaced
| 289:a5eabd407774 | 290:d5d6ab809ad3 |
|---|---|
| 235 buffer->pos++; | 235 buffer->pos++; |
| 236 return c; | 236 return c; |
| 237 } | 237 } |
| 238 } | 238 } |
| 239 | 239 |
| 240 size_t ucx_buffer_puts(UcxBuffer *buffer, char *str) { | 240 size_t ucx_buffer_puts(UcxBuffer *buffer, const char *str) { |
| 241 return ucx_buffer_write((const void*)str, 1, strlen(str), buffer); | 241 return ucx_buffer_write((const void*)str, 1, strlen(str), buffer); |
| 242 } | 242 } |
| 243 | |
| 244 int ucx_buffer_shift_left(UcxBuffer* buffer, size_t shift) { | |
| 245 if (shift >= buffer->size) { | |
| 246 buffer->pos = buffer->size = 0; | |
| 247 } else { | |
| 248 memmove(buffer->space, buffer->space + shift, buffer->size - shift); | |
| 249 buffer->size -= shift; | |
| 250 | |
| 251 if (buffer->pos >= shift) { | |
| 252 buffer->pos -= shift; | |
| 253 } else { | |
| 254 buffer->pos = 0; | |
| 255 } | |
| 256 } | |
| 257 return 0; | |
| 258 } | |
| 259 | |
| 260 int ucx_buffer_shift_right(UcxBuffer* buffer, size_t shift) { | |
| 261 size_t req_capacity = buffer->size + shift; | |
| 262 size_t movebytes; | |
| 263 | |
| 264 // auto extend buffer, if required and enabled | |
| 265 if (buffer->capacity < req_capacity) { | |
| 266 if ((buffer->flags & UCX_BUFFER_AUTOEXTEND) == UCX_BUFFER_AUTOEXTEND) { | |
| 267 if (ucx_buffer_extend(buffer, req_capacity - buffer->capacity)) { | |
| 268 return 1; | |
| 269 } | |
| 270 movebytes = buffer->size; | |
| 271 } else { | |
| 272 movebytes = buffer->capacity - shift; | |
| 273 } | |
| 274 } else { | |
| 275 movebytes = buffer->size; | |
| 276 } | |
| 277 | |
| 278 memmove(buffer->space + shift, buffer->space, movebytes); | |
| 279 buffer->size = shift+movebytes; | |
| 280 | |
| 281 buffer->pos += shift; | |
| 282 if (buffer->pos > buffer->size) { | |
| 283 buffer->pos = buffer->size; | |
| 284 } | |
| 285 | |
| 286 return 0; | |
| 287 } | |
| 288 | |
| 289 int ucx_buffer_shift(UcxBuffer* buffer, off_t shift) { | |
| 290 if (shift < 0) { | |
| 291 return ucx_buffer_shift_left(buffer, (size_t) (-shift)); | |
| 292 } else if (shift > 0) { | |
| 293 return ucx_buffer_shift_right(buffer, (size_t) shift); | |
| 294 } else { | |
| 295 return 0; | |
| 296 } | |
| 297 } |
