splitnrn.cpp

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/* split a file.zip file into 1MB pieces called file.z1, file.z2 etc */

#include <stdio.h>
#include <malloc.h>
#include <stdlib.h>

void main(int argc, char** argv) {
    long i, j, n, done;
    FILE* fi, *fo;
    char* buf;
    buf = (char*)malloc(1024*16);
    if (argc != 2) {
        printf("usage: splitnrn nrndisk2\n");
        exit(1);
    }
    sprintf(buf, "%s.zip", argv[1]);
    if ((fi = fopen(buf, "rb")) == (FILE*)0) {
        printf("can't open %s\n", buf);
        exit(1);
    }
    n=1;
   done = 0;
    while (!done) {
        sprintf(buf, "%s.z%d", argv[1], n);
        if ((fo = fopen(buf, "wb")) == (FILE*)0) {
            printf("can't open %s\n", buf);
            exit(1);
        }
        for (j=0; j < 88; ++j) { /* 88*1024*16 = 1441792 */
            i = fread(buf, sizeof(char), 1024*16, fi);
            printf("read %d\n", i);
            i = fwrite(buf, sizeof(char), i, fo);
         printf("write %d\n", i);
            if (i < 1024*16) {
                done = 1;
                break;
            }
        }
        ++n;
        fclose(fo);
    }
}