2. The main program

2.1. Main subroutine

int p_dot(int argc, char *argv[]);

int p_dot(int argc, char *argv[])
{
    int len;
    if(argc < 2) {
        print_help();
        return 1;
    }
    len = strlen(argv[1]);
    if(0) {
        /* hack to start the chain */
    }
<<command_parsing>>
    else {
        fprintf(stderr,
                "Could not find subcommand '%s'\n",
                argv[1]);
        return 1;
    }
    return 0;
}

2.2. Print Help

Prints all available commands if there are not enough arguments provided.

static void print_help(void);

static void print_help(void)
{
    fprintf(stderr, "Available Commands\n\n");
<<available_commands>>
}

2.3. Matching

(Copied from get.org)

static int match(const char *s1,
                 int sz1,
                 const char *s2,
                 int sz2);

static int match(const char *s1,
                 int sz1,
                 const char *s2,
                 int sz2)
{
    return sz1 == sz2 && !strncmp(s1, s2, sz2);
}

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