csvvtk

#include <stdio.h>

int main(int argc, char *argv[])
{
    //Decralation of variables
    int i;
    int r,g,b;
    unsigned long newline_count_1=0,newline_count_2=0,Lines;
    FILE *fpi1,*fpi2,*fpo;
    float x,y,z;

    if(argc!=4)
    {
        fprintf(stderr,"Usage: %s (1)csvfile\n(2)csvfile\n(3)vtkfile\n",argv[0]);

        return 0;
    }

    printf("Open CSV File\n");
    //Open CSV1 file
    if((fpi1=fopen (argv[1],"r"))==NULL)
    {
        printf("The file can't opened. The program is exit.\n ");

        return 0;
    }

    printf("Open CSV File\n");
    //Open CSV2 file
    if((fpi2=fopen (argv[2],"r"))==NULL)
    {
        printf("The file can't opened. The program is exit.\n ");

        return 0;
    }

    printf("Open VTK File\n");
    //Open VTK file for save
    if((fpo=fopen (argv[3],"w"))==NULL)
    {
        printf("The file can't opened. The program is exit.\n ");

        return 0;
    }

    //count how many lines
    /*
    while((c==fgetc(fpi))!=EOF)
    {
        if(c=='\n')
            newline_count++;
    }
    */

    printf("CSVFile1 Count Lines\n");
    while (fscanf(fpi1,"%f,%f,%f,%d,%d,%d",&x,&y,&z,&r,&g,&b)!=EOF)
    {
        newline_count_1=newline_count_1+1;
    }

    printf("CSVFile2 Count Lines\n");
    while (fscanf(fpi2,"%f,%f,%f,%d,%d,%d",&x,&y,&z,&r,&g,&b)!=EOF)
    {
        newline_count_2=newline_count_2+1;
    }

    printf("total_1=%ld\n",newline_count_1);

    printf("total_2=%ld\n",newline_count_2);

    Lines=newline_count_1+newline_count_2;

    printf("total Lines=%ld\n",Lines);

    //writing VTK file
    fprintf(fpo,"# vtk DataFile Version 3.0\n");
    fprintf(fpo,"vtk output\n");
    fprintf(fpo,"ASCII\n");
    fprintf(fpo,"DATASET UNSTRUCTURED_GRID\n");
    fprintf(fpo,"POINTS %ld float\n",Lines);

    fseek(fpi1,0,SEEK_SET);

    fseek(fpi2,0,SEEK_SET);

    printf("writing csv1 x y z\n");
    while (fscanf(fpi1,"%f,%f,%f,%d,%d,%d",&x,&y,&z,&r,&g,&b)!=EOF)
    {
        //printf ("%f,%f,%f,%d,%d,%d\n",x,y,z,r,g,b);
        fprintf(fpo,"%f %f %f\n",x,y,z);
    }

    printf("writing csv2 x y z\n");
    while (fscanf(fpi2,"%f,%f,%f,%d,%d,%d",&x,&y,&z,&r,&g,&b)!=EOF)
    {
        //printf ("%f,%f,%f,%d,%d,%d\n",x,y,z,r,g,b);
        fprintf(fpo,"%f %f %f\n",x,y,z);
    }

    fprintf(fpo,"CELLS %ld %ld\n",Lines,Lines*2);

    for(i=0;i<Lines;i++)
    {
        fprintf(fpo,"1 %d\n",i);
    }

    fprintf(fpo,"CELL_TYPES %ld\n",Lines);

    for(i=0;i<Lines;i++)
    {
        fprintf(fpo,"1\n");
    }

    fprintf(fpo,"POINT_DATA %ld\n",Lines);

    fprintf(fpo,"COLOR_SCALARS RGB 3\n");

    fseek(fpi1,0,SEEK_SET);

    fseek(fpi2,0,SEEK_SET);

    while (fscanf(fpi1,"%f,%f,%f,%d,%d,%d",&x,&y,&z,&r,&g,&b)!=EOF)
    {
        fprintf(fpo,"%f %f %f\n",(float)r/255,(float)g/255,(float)b/255);
    }

    while (fscanf(fpi2,"%f,%f,%f,%d,%d,%d",&x,&y,&z,&r,&g,&b)!=EOF)
    {
        fprintf(fpo,"%f %f %f\n",(float)r/255,(float)g/255,(float)b/255);
    }

    fclose(fpi1);
    fclose(fpi2);
    fclose(fpo);
    }