/*
 * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
 * Copyright (C) ????-2008 - INRIA
 *
 * This file must be used under the terms of the CeCILL.
 * This source file is licensed as described in the file COPYING, which
 * you should have received as part of this distribution.  The terms
 * are also available at
 * http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
 *
 */

#include <string.h>
#include "stack-c.h"
#include "stcreate.h"
#include "cvstr.h"
#include "Scierror.h"
#include "localization.h"

#define memused(it,mn) ((((mn)*( it % 10))/sizeof(int))+1)

/* Table of constant values */
static int c1 = 1;
static int c4 = 4;


int C2F(stcreate)(int *lw, int *nz, int *sz, int *nf, char *fnames[], int *retval)
{
    int next, k, lr, nels;

    static int l;
    static int l0, n1, il;

    *retval = 0;
    l0 = *Lstk(*lw);

    C2F(intersci).ntypes[*lw - Top + Rhs - 1] = '$';
    C2F(intersci).iwhere[*lw - Top + Rhs - 1] = *Lstk(*lw);

    if (*lw > intersiz)
    {
        Scierror(998, _("Too many arguments in the stack, edit stack.h and enlarge intersiz.\n"));
        return 1;
    }
    sttyp(&n1, "size", nf, fnames);

    *retval = 1;
    /*     create the mlist header */
    il = iadr(l0);
    Err = sadr(il + 6) + n1 - *Lstk(Bot);
    if (Err > 0)
    {
        SciError(17);
        return 1;
    }
    *istk(il) = 17;
    *istk(il + 1) = 2 + *nf;
    *istk(il + 2) = 1;
    /*     set mlist type ["st","dims","field1",...,"fieldnf"] */
    l = sadr(il + 5 + *nf);
    sttyp(istk(iadr(l)), "set", nf, fnames);
    *istk(il + 3) = *istk(il + 2) + n1;
    l += n1;
    /*     set dims entry (int32 matrix) */
    /*  if (!C2F(creimati)("stcreate", &l, &c4, nz, &c1, &lr, &c1,  12L)) return 1;  FD comment*/
    if (!C2F(creimati)("stcreate", &l, &c4, &c1, nz, &lr, &c1,  12L))
    {
        return 1;
    }
    C2F(icopy)(nz, sz, &c1, istk(lr), &c1);
    n1 = sadr(iadr(l) + 4) + memused(c4, *nz) - l;
    *istk(il + 4) = *istk(il + 3) + n1;
    l += n1;

    /*     set struct fields */
    nels = 1;
    for (k = 0; k < *nz; k++)
    {
        nels = nels * sz[k];
    }
    if (nels == 1)
    {
        for (k = 0; k < *nf; k++)
        {
            creonevoid(&l, &next);
            n1 = next - l;
            l += n1;
            *istk(il + 5 + k) = *istk(il + 4 + k) + n1;
        }
    }
    else
    {
        for (k = 0; k < *nf; k++)
        {
            crelistofvoids(&l, &next, &nels);
            n1 = next - l;
            l += n1;
            *istk(il + 5 + k) = *istk(il + 4 + k) + n1;
        }
    }
    *Lstk(*lw + 1) = l;
    return 1;
}

int creonevoid(int *slw, int *lw)
{
    int il;
    il = iadr(*slw);
    *istk(il  ) = 1;
    *istk(il + 1) = 0;
    *istk(il + 2) = 0;
    *istk(il + 3) = 0;
    il += 4;
    *lw = sadr(il);
    return 0;
}

int crelistofvoids(int *slw, int *lw, int *nels)
{
    int il, k;
    il = iadr(*slw);
    *istk(il) = 15;
    *istk(il + 1) = *nels;
    *istk(il + 2) = 1;
    for (k = 0; k < *nels; k++)
    {
        *istk(il + 3 + k) = *istk(il + 2 + k) + 2;
    }
    il += 3 + *nels;
    il = iadr(sadr(il));
    for (k = 0; k < *nels; k++)
    {
        *istk(il  ) = 1;
        *istk(il + 1) = 0;
        *istk(il + 2) = 0;
        *istk(il + 3) = 0;
        il += 4;
    };
    if ( ((il - iadr(*slw)) % 2) )
    {
        il += 1;
    }
    *lw =  sadr(il);
    return 0;
}

int sttyp(int *ivt, char *job, int *nf, char *fnames[])
{
    static int l;
    int ls, k, shft, stp, Job;

    if (strcmp(job, "size") == 0)
    {
        /*        size of header = ["st","dims","f_1",...,"f_nf"] */
        ls = 0;
        for ( k = 0; k < *nf; k++)
        {
            ls += (int)strlen(fnames[k]);
        }
        ivt[0] = 4 + (2 + *nf) + 1 + 2 + 4 + ls; /* 2 + *nf strings */
        /* if (ivt[0] % 2) ivt[0]++;  */
    }
    else
    {
        /*      header = row vector made of 2 + *nf strings */
        ivt[0] = sci_strings;
        ivt[1] = 1;
        ivt[2] = 2 + *nf;
        ivt[3] = 0;
        ivt[4] = 1;
        stp = 4;
        l = 5 + (2 + *nf);
        /*       string 1 =  "st" */
        shft = 2;
        ivt[l] = 28;      /*  "s"   */
        ivt[l + 1] = 29;  /*  "t"   */
        ivt[stp + 1] = ivt[stp] + shft;
        l += shft;
        stp++;
        /*        string 2 =  "dims" */
        shft = 4;
        ivt[l] = 13;      /* "d"   */
        ivt[l + 1] = 18;  /* "i"   */
        ivt[l + 2] = 22;  /* "m"   */
        ivt[l + 3] = 28;  /* "s"   */
        ivt[stp + 1] = ivt[stp] + shft;
        l += shft;
        stp++;
        /*        strings 3:2+nf = ["field_1","field_2","field_nf"]    */
        for (k = 0; k < *nf; k++)
        {
            shft = (int)strlen(fnames[k]);
            C2F(cvstr)(&shft, &ivt[l], fnames[k], (Job = 0, &Job), shft);
            ivt[stp + 1] = ivt[stp] + shft;
            l += shft;
            stp++;
        }
    }
    return 0;
}