comparison: ucx/buffer.c
ucx/buffer.c
- changeset 335
- c1bc13faadaa
- parent 308
- 82275f589d8d
- child 505
- 481802342fdf
equal
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| 334:5f80c5d0e87f | 335:c1bc13faadaa |
|---|---|
| 1 /* | 1 /* |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. |
| 3 * | 3 * |
| 4 * Copyright 2016 Olaf Wintermann. All rights reserved. | 4 * Copyright 2017 Mike Becker, Olaf Wintermann All rights reserved. |
| 5 * | 5 * |
| 6 * Redistribution and use in source and binary forms, with or without | 6 * Redistribution and use in source and binary forms, with or without |
| 7 * modification, are permitted provided that the following conditions are met: | 7 * modification, are permitted provided that the following conditions are met: |
| 8 * | 8 * |
| 9 * 1. Redistributions of source code must retain the above copyright | 9 * 1. Redistributions of source code must retain the above copyright |
| 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 26 * POSSIBILITY OF SUCH DAMAGE. | 26 * POSSIBILITY OF SUCH DAMAGE. |
| 27 */ | 27 */ |
| 28 | 28 |
| 29 #include "buffer.h" | 29 #include "ucx/buffer.h" |
| 30 | |
| 30 #include <stdarg.h> | 31 #include <stdarg.h> |
| 31 #include <stdlib.h> | 32 #include <stdlib.h> |
| 32 #include <string.h> | 33 #include <string.h> |
| 33 | 34 |
| 34 UcxBuffer *ucx_buffer_new(void *space, size_t capacity, int flags) { | 35 UcxBuffer *ucx_buffer_new(void *space, size_t capacity, int flags) { |
| 62 free(buffer); | 63 free(buffer); |
| 63 } | 64 } |
| 64 | 65 |
| 65 UcxBuffer* ucx_buffer_extract( | 66 UcxBuffer* ucx_buffer_extract( |
| 66 UcxBuffer *src, size_t start, size_t length, int flags) { | 67 UcxBuffer *src, size_t start, size_t length, int flags) { |
| 67 | 68 if (src->size == 0 || length == 0 || |
| 68 if (src->size == 0 || length == 0 || start+length > src->capacity) { | 69 ((size_t)-1) - start < length || start+length > src->capacity) |
| 70 { | |
| 69 return NULL; | 71 return NULL; |
| 70 } | 72 } |
| 71 | 73 |
| 72 UcxBuffer *dst = (UcxBuffer*) malloc(sizeof(UcxBuffer)); | 74 UcxBuffer *dst = (UcxBuffer*) malloc(sizeof(UcxBuffer)); |
| 73 if (dst) { | 75 if (dst) { |
| 148 } | 150 } |
| 149 | 151 |
| 150 size_t ucx_buffer_write(const void *ptr, size_t size, size_t nitems, | 152 size_t ucx_buffer_write(const void *ptr, size_t size, size_t nitems, |
| 151 UcxBuffer *buffer) { | 153 UcxBuffer *buffer) { |
| 152 size_t len = size * nitems; | 154 size_t len = size * nitems; |
| 153 const char *string = ptr; | |
| 154 size_t required = buffer->pos + len; | 155 size_t required = buffer->pos + len; |
| 155 if (buffer->pos > required) { | 156 if (buffer->pos > required) { |
| 156 return 0; | 157 return 0; |
| 157 } | 158 } |
| 158 | 159 |
