comparison: src/buffer.c
src/buffer.c
- changeset 529
- 814d51173f20
- parent 501
- 9a08f5e515cc
- child 530
- e866516cac17
equal
deleted
inserted
replaced
| 528:4fbfac557df8 | 529:814d51173f20 |
|---|---|
| 34 | 34 |
| 35 int cxBufferInit( | 35 int cxBufferInit( |
| 36 CxBuffer *buffer, | 36 CxBuffer *buffer, |
| 37 void *space, | 37 void *space, |
| 38 size_t capacity, | 38 size_t capacity, |
| 39 CxAllocator *allocator, | 39 CxAllocator const *allocator, |
| 40 int flags | 40 int flags |
| 41 ) { | 41 ) { |
| 42 buffer->allocator = allocator; | 42 buffer->allocator = allocator; |
| 43 buffer->flags = flags; | 43 buffer->flags = flags; |
| 44 if (!space) { | 44 if (!space) { |
| 61 | 61 |
| 62 void cxBufferDestroy(CxBuffer *buffer) { | 62 void cxBufferDestroy(CxBuffer *buffer) { |
| 63 if ((buffer->flags & CX_BUFFER_FREE_CONTENTS) == CX_BUFFER_FREE_CONTENTS) { | 63 if ((buffer->flags & CX_BUFFER_FREE_CONTENTS) == CX_BUFFER_FREE_CONTENTS) { |
| 64 cxFree(buffer->allocator, buffer->bytes); | 64 cxFree(buffer->allocator, buffer->bytes); |
| 65 } | 65 } |
| 66 } | |
| 67 | |
| 68 CxBuffer *cxBufferExtract( | |
| 69 CxBuffer *src, | |
| 70 size_t start, | |
| 71 size_t length, | |
| 72 int flags | |
| 73 ) { | |
| 74 if (src->size == 0 || length == 0 || | |
| 75 ((size_t) -1) - start < length || start + length > src->capacity) { | |
| 76 return NULL; | |
| 77 } | |
| 78 | |
| 79 CxBuffer *dst = (CxBuffer *) malloc(sizeof(cx_buffer_s)); | |
| 80 if (dst) { | |
| 81 dst->bytes = malloc(length); | |
| 82 if (!dst->bytes) { | |
| 83 free(dst); | |
| 84 return NULL; | |
| 85 } | |
| 86 dst->capacity = length; | |
| 87 dst->size = length; | |
| 88 dst->flags = flags | CX_BUFFER_FREE_CONTENTS; | |
| 89 dst->pos = 0; | |
| 90 memcpy(dst->bytes, src->bytes + start, length); | |
| 91 } | |
| 92 return dst; | |
| 93 } | 66 } |
| 94 | 67 |
| 95 int cxBufferSeek( | 68 int cxBufferSeek( |
| 96 CxBuffer *buffer, | 69 CxBuffer *buffer, |
| 97 off_t offset, | 70 off_t offset, |
| 126 return 0; | 99 return 0; |
| 127 } | 100 } |
| 128 | 101 |
| 129 } | 102 } |
| 130 | 103 |
| 131 int cxBufferEof(CxBuffer *buffer) { | 104 void cxBufferClear(CxBuffer *buffer) { |
| 105 memset(buffer->bytes, 0, buffer->size); | |
| 106 buffer->size = 0; | |
| 107 buffer->pos = 0; | |
| 108 } | |
| 109 | |
| 110 int cxBufferEof(CxBuffer const *buffer) { | |
| 132 return buffer->pos >= buffer->size; | 111 return buffer->pos >= buffer->size; |
| 133 } | 112 } |
| 134 | 113 |
| 135 int cxBufferMinimumCapacity( | 114 int cxBufferMinimumCapacity( |
| 136 CxBuffer *buffer, | 115 CxBuffer *buffer, |
