/**
    Function: Get File checksum value for win32
    Author: Tody Kwok
    Revsion: 1.0.0.1
    (c) Tody 2010
*/
#include <stdio.h>
#include <stdlib.h>
#include <conio2.h>
#define progname    "wsum.exe"
#define header      "(c) Tody 2010, FIC Inc."
void drawline()
{
    int i=0;
    textcolor(LIGHTBLUE);
    for(i=0; i< 79; i++)
        printf("-");
    textcolor(WHITE);
}
int main(int argc, char *argv[])
{
  FILE *f;
  int ch = 0;
  int i = 0;
  unsigned int cksum= 0;
  
  if (argc < 2)
  {
    printf("%s/nUsage:/n  %s <filename>", header, progname);
    return 1;      
  }
  printf("%s/nCaculate in process, please wait.../n", header, progname);
  _setcursortype(0); /* no cursor */
  drawline();
  
  for (i=1; i< argc; i++)
  {
    f = fopen(argv[i],"rb"); /* Open File */
    if (f==NULL)
    {
        fprintf(stderr, "/n%s not found!/n",argv[i]);
        continue;
    }
    
    printf("/nComputing.../r");
    /* Caculate file checksum */
    cksum = 0; /* Reset cksum to default */
    ch = fgetc(f);
    while(ch!=EOF)
    {
        cksum += ch;
        ch = fgetc(f);
    }
    printf("checkSum: %04X | %s/n", cksum&0xffff, argv[i]);
    drawline();
    fclose(f);
  }
  printf("/nAll Done.");
  getch();  
  return 0;
}