usr/touch.c


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#include "gbos.h"
/* touch FILE...: create FILE if it does not exist, leave it alone if it does.
 *
 * There are no timestamps in gbfs (no RTC on an MBC5 cart), so touch only does
 * the half that means anything here: make an empty file. O_APPEND is exactly
 * right for it - it creates, and it does NOT truncate what is already there. */
void main(void) {
    char *argv[8];
    unsigned char argc = argv_parse(argv, 8);
    unsigned char i, fd;
    if (argc < 1) {
        puts("usage: touch FILE...");
        nl();
        sexit(2);
    }
    for (i = 0; i < argc; i++) {
        fd = open(argv[i], O_APPEND);
        if (fd > 3) {
            puts("touch: cannot create ");
            puts(argv[i]);
            nl();
            continue;
        }
        close(fd);
    }
}