OVMS3/OVMS.V3/components/duktape/src-separate/duk_hbufobj_misc.c

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#include "duk_internal.h"
#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_uint_t duk_hbufobj_clamp_bytelength(duk_hbufobj *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 */