Category : Files from Magazines
Archive : VOL10N19.ZIP
Filename : BIGCOPY.C
Output of file : BIGCOPY.C contained in archive : VOL10N19.ZIP
#include
#include
#include
#include
#include
#include
#include
#include
#define MAXBUFSIZE 32767
#define MAXFNAME 80
#define NUMELEMENTS(item) (sizeof(item)/sizeof(item[0]))
char infname[MAXFNAME];
char drive[2];
char curdrive;
long length;
struct _disks
{
long inbytes;
char *name;
} disks[4] =
{
{ 362496L, "360k" },
{ 730112L, "720k" },
{ 1213952L, "1.22meg" },
{ 1457664L, "1.44meg" }
};
char *bigcopy = "BIGCOPY.";
char bigcopyfname[14];
int bigcopyfileno = 0;
long diskfreespace(char drive);
void main(int argc, char **argv)
{
FILE *hin, *hout;
long bytesfree, totread, bytestoread, bytesremain, chunksize = 0L, temp;
int i,numdisks;
char *bufptr;
unsigned bytesread;
if(argc < 3 || argc > 4)
{
printf("Usage: BIGCOPY
exit(1);
}
strcpy(infname,strupr(argv[1]));
#if defined(__BORLANDC__)
curdrive = getdisk();
curdrive++;
#else
_dos_getdrive((unsigned *)&curdrive);
#endif
drive[0] = *(argv[2]);
drive[0] = (char)toupper(drive[0]);
drive[1] = (char)(drive[0]-'A'+1);
if(argc == 4)
chunksize = atol(argv[3]);
if(!(hin = fopen(infname,"rb")))
{
printf("Unable to open %s\n",infname);
exit(2);
}
if(!(bufptr = malloc(MAXBUFSIZE)))
{
printf("Unable allocate copy buffer\n");
exit(3);
}
length = filelength(fileno(hin));
bytesfree = diskfreespace(drive[1]);
if(bytesfree < length)
{
printf("%s is %ld bytes long...",infname,length);
printf("Copying it will require:\n");
printf(
"Disks Disk Size\n"
"=========================\n");
for(i = 0; i < NUMELEMENTS(disks); i++)
{
if(disks[i].inbytes > length)
numdisks = 1;
else
{
unsigned remain;
numdisks = (int)(length / disks[i].inbytes);
if(numdisks == 0)
numdisks++;
if((remain = (unsigned)(length % disks[i].inbytes)) > 0)
numdisks++;
}
printf("%7s %5d disk%s\n",disks[i].name,numdisks,
(numdisks > 1 ? "s" : ""));
}
}
for(bytesremain = length; bytesremain != 0L; )
{
if(drive[1] != curdrive)
{
printf("Insert disk %d in drive %c\n",bigcopyfileno,drive[0]);
printf("Press any key to begin copying, or ^C to exit...\n");
if(getch() == 3)
exit(0);
}
bytesfree = diskfreespace(drive[1]);
// bytes to read should be lesser of free space or unread bytes
bytestoread = (bytesfree < bytesremain ? bytesfree : bytesremain);
// bytes to read should be chunksize if chunksize is smaller
if(chunksize > 0L && chunksize < bytestoread)
bytestoread = chunksize;
sprintf(bigcopyfname,"%c:%s%03d",drive[0],bigcopy,bigcopyfileno++);
printf("\tCopying %ld bytes from %s to %s",bytestoread,
infname,bigcopyfname);
if(!(hout = fopen(bigcopyfname,"wb")))
{
printf("\nUnable to open output file: %s\n",bigcopyfname);
exit(5);
}
for(totread = 0L; totread < bytestoread; totread += bytesread )
{
temp = MAXBUFSIZE;
bytesread = (bytestoread-totread > temp
? MAXBUFSIZE : (unsigned)(bytestoread-totread));
if((bytesread = fread(bufptr,sizeof(char),bytesread,hin)) == 0)
break;
if((fwrite(bufptr,sizeof(char),bytesread,hout)) != bytesread)
{
printf("\nError writing %s",bigcopyfname);
exit(6);
}
printf(".");
}
printf("\n");
bytesremain -= totread;
fclose(hout);
}
fclose(hin);
free(bufptr);
exit(0);
}
long diskfreespace(char drive)
{
long bfree;
#if defined(__BORLANDC__)
struct dfree diskfree;
getdfree(drive, &diskfree);
if(diskfree.df_sclus == 0xffff)
{
printf("Invalid drive: %c\n",drive-1+'A');
exit(4);
}
bfree = (long)diskfree.df_avail;
bfree *= diskfree.df_sclus;
bfree *= diskfree.df_bsec;
#else
struct diskfree_t diskfree;
if(_dos_getdiskfree(drive,&diskfree))
{
printf("Invalid drive: %c\n",drive);
exit(4);
}
bfree = (long)diskfree.avail_clusters;
bfree *= diskfree.sectors_per_cluster;
bfree *= diskfree.bytes_per_sector;
#endif
return bfree;
}
Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!
This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.
But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/