Get child item (Scilab gateway) (original) (raw)

Scilab 5.3.3

• Scilab help
• API Scilab
• List manipulation
• Boolean reading (Scilab gateway)
• Boolean writing (Scilab gateway)
• Boolean sparse reading (Scilab gateway)
• Boolean sparse writing (Scilab gateway)
• Create List (Scilab gateway)
• Double reading (Scilab gateway)
• Double writing (Scilab gateway)
• Get child item (Scilab gateway)
• Item Number (Scilab gateway)
• Integer reading (Scilab gateway)
• Integer writing (Scilab gateway)
• Pointer reading (Scilab gateway)
• Pointer writing (Scilab gateway)
• Polynomial reading (Scilab gateway)
• Polynomial writing (Scilab gateway)
• Sparse reading (Scilab gateway)
• Sparse writing (Scilab gateway)
• String reading (Scilab gateway)
• String writing (Scilab gateway)

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Scilab help >> API Scilab > List manipulation > Get child item (Scilab gateway)

How to get the address of a list child.

Calling Sequence

SciErr getListItemAddress(void* _pvCtx, int* _piAddress, int _iItemNum, int** _piItemAddress)

Arguments

_pvCtx

Scilab environment pointer, pass in "pvApiCtx" provided by api_scilab.h.

_piAddress

Address of the list.

_iItemNum

Item number.

_piItemAddress

Return address of the item.

SciErr

Error structure where is stored errors messages history and first error number.

Description

This help describes how to get the address of a list child.

Gateway Source

int get_list_info(int* _piAddress); void insert_indent(void);

static int iLocalTab = 0;

int common_list(char *fname,unsigned long fname_len) { SciErr sciErr; int *piAddr = NULL;

CheckRhs(1,1);

sciErr = getVarAddressFromPosition(pvApiCtx, 1, &piAddr);
if(sciErr.iErr)
{
    printError(&sciErr, 0);
    return 0;
}

get_list_info(piAddr);

LhsVar(1) = 0;
return 0;

}

int get_list_info(int* _piAddress) { SciErr sciErr; int i = 0; int iRet = 0; int iItem = 0;

sciErr = getListItemNumber(pvApiCtx, _piAddress, &iItem);
if(sciErr.iErr)
{
    printError(&sciErr, 0);
    sciprint("This variable is not a list");
    return 0;
}

sciprint("List (%d items) -> address : 0x%08X) : \n", iItem, _piAddress);
for(i = 0 ; i < iItem ; i++)
{
    int iType           = 0;
    int* piAddrChild    = NULL;
    sciErr = getListItemAddress(pvApiCtx, _piAddress, i + 1, &piAddrChild);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    sciErr = getVarType(pvApiCtx, piAddrChild, &iType);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    if(iType == sci_list || iType == sci_tlist || iType == sci_mlist)
    {
        insert_indent();
        sciprint("Child %d -> ", i + 1);
        iLocalTab++;
        iRet = get_list_info(piAddrChild);
        iLocalTab--;
        if(iRet)
        {
            return 1;
        }
    }
    else
    {
        insert_indent();
        sciprint("Child %d -> address : 0x%08X\n", i + 1, piAddrChild);
    }
}
return 0;

}

void insert_indent(void) { int i = 0; for(i = 0 ; i < iLocalTab ; i++) { sciprint("\t"); } }

Scilab test script

l1 = [1,2*%i,3;%i,2,3*%i]; l2 = ["may","the";"puffin","be";"with","you"]; l3 = int8([1,2,3]); l5 = list(l1,l2,l3); l4 = list(l5, list(l5,l5)); l6 = uint16([1000,2000,3000]); l = list(l1,l2,l3,l6,l4,l5); common_list(l)