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