| #include "duk_internal.h" |
| |
| #if defined(DUK_USE_BUFFEROBJECT_SUPPORT) |
| DUK_INTERNAL duk_uint_t duk_hbufferobject_clamp_bytelength(duk_hbufferobject *h_bufobj, duk_uint_t len) { |
| duk_uint_t buf_size; |
| duk_uint_t buf_avail; |
| |
| DUK_ASSERT(h_bufobj != NULL); |
| DUK_ASSERT(h_bufobj->buf != NULL); |
| |
| buf_size = (duk_uint_t) DUK_HBUFFER_GET_SIZE(h_bufobj->buf); |
| if (h_bufobj->offset > buf_size) { |
| /* Slice starting point is beyond current length. */ |
| return 0; |
| } |
| buf_avail = buf_size - h_bufobj->offset; |
| |
| return buf_avail >= len ? len : buf_avail; |
| } |
| #endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ |
