// Copyright status: this file is in the public domain.

#include <strings.h>

#include "lx.h"

#include "proto.h"
#include "internal.h"

void lx_SGC_SetDashes(LX_CONN *xc, LX_SGC sgcid, int offset, int ndash, const unsigned char *dashes)
{
 SGC *sgc;

 if ( (xc->flags & XCF_FAIL) ||
      (offset < 0) || (offset > 65535) ||
      (ndash < 1) || (ndash > ((65535-3)*4)) )
  { lx__bad_call(xc,"lx_SGC_SetDashes");
    return;
  }
 sgc = lx__lookup_sgc(xc,sgcid);
 if (! sgc)
  { lx__bad_call(xc,"lx_SGC_SetDashes");
    return;
  }
 while (!(ndash & 1) && !bcmp(dashes,dashes+(ndash>>1),ndash>>1)) ndash >>= 1;
 if (lx__set_sgc_dash_list_len(&sgc->setv,ndash))
  { lx__nomem_fail(xc);
    return;
  }
 sgc->set |= LX_GCM_DashOffset | LX_GCM_Dashes;
 sgc->setv.core.dash_offset = offset;
 bcopy(dashes,sgc->setv.dashv,ndash);
}