duk_hbufferobject_misc.c File Reference

#include "duk_internal.h"

Go to the source code of this file.

Functions
DUK_INTERNAL duk_uint_t	duk_hbufferobject_clamp_bytelength (duk_hbufferobject *h_bufobj, duk_uint_t len)

Function Documentation

duk_hbufferobject_clamp_bytelength()

DUK_INTERNAL duk_uint_t duk_hbufferobject_clamp_bytelength	(	duk_hbufferobject *	h_bufobj,
		duk_uint_t	len )

Definition at line 4 of file duktape-1.5.2/src-separate/duk_hbufferobject_misc.c.

                                                                                                        {
    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;
}

References duk_hbufferobject::buf, DUK_ASSERT, DUK_HBUFFER_GET_SIZE, NULL, and duk_hbufferobject::offset.