comparison: ucx/memstream.c
ucx/memstream.c
- changeset 58
- 733f22fca61a
- parent 57
- e18157c52985
equal
deleted
inserted
replaced
| 57:e18157c52985 | 58:733f22fca61a |
|---|---|
| 67 | 67 |
| 68 int ucx_memeof(UcxMemstream *stream) { | 68 int ucx_memeof(UcxMemstream *stream) { |
| 69 return stream->pos >= stream->length; | 69 return stream->pos >= stream->length; |
| 70 } | 70 } |
| 71 | 71 |
| 72 int ucx_memoverflow(UcxMemstream *stream) { | |
| 73 return stream->pos > stream->length; | |
| 74 } | |
| 75 | |
| 76 size_t ucx_memtell(UcxMemstream *stream) { | 72 size_t ucx_memtell(UcxMemstream *stream) { |
| 77 return stream->pos; | 73 return stream->pos; |
| 78 } | 74 } |
| 79 | 75 |
| 80 size_t ucx_memio(void* d, size_t s, size_t n, UcxMemstream *m, _Bool read) { | 76 size_t ucx_memio(void* d, size_t s, size_t n, UcxMemstream *m, _Bool read) { |
| 81 size_t len; | 77 size_t len; |
| 82 if (m->pos + s*n > m->length) { | 78 if (m->pos + s*n > m->length) { |
| 83 if (ucx_memoverflow(m)) { | 79 len = m->length - m->pos; |
| 84 len = 0; | 80 if (s > 1) len -= len%s; |
| 85 } else { | |
| 86 len = m->length - m->pos; | |
| 87 if (s > 1) len -= len%s; | |
| 88 } | |
| 89 } else { | 81 } else { |
| 90 len = s*n; | 82 len = s*n; |
| 91 } | 83 } |
| 92 | 84 |
| 93 if (len == 0) { | 85 if (len == 0) { |
| 122 int c = ((char*)(stream->space))[stream->pos]; | 114 int c = ((char*)(stream->space))[stream->pos]; |
| 123 stream->pos++; | 115 stream->pos++; |
| 124 return c; | 116 return c; |
| 125 } | 117 } |
| 126 } | 118 } |
| 127 | |
| 128 int ucx_memprintf(UcxMemstream *stream, const char* format, ...) { | |
| 129 va_list v; | |
| 130 va_start(v, format); | |
| 131 int r = vsprintf((char*)stream->space+stream->pos, format, v); | |
| 132 va_end(v); | |
| 133 | |
| 134 stream->pos += r; | |
| 135 | |
| 136 return r; | |
| 137 } | |
| 138 | |
| 139 int ucx_memscanf(UcxMemstream *stream, const char* format, ...) { | |
| 140 | |
| 141 /* TODO: vsscanf returns the number of fields read, | |
| 142 * we need the number of bytes */ | |
| 143 | |
| 144 va_list v; | |
| 145 va_start(v, format); | |
| 146 int r = vsscanf((char*)stream->space+stream->pos, format, v); | |
| 147 va_end(v); | |
| 148 | |
| 149 stream->pos += r; | |
| 150 | |
| 151 return r; | |
| 152 } |
