src/kernel/commands/command.c


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#include <kernel/lib/lib.h>
#include <kernel/io/io.h>
#include <kernel/acpi/acpi.h>
#include <kernel/graphics/vesa.h>
#include <kernel/cmos/rtc.h>
#include <kernel/timer/timer.h>
#include <mlibc/string.h>

int32_t starts_with(const char *a, const char *b) {
    size_t length_pre = strlen(b);
    size_t length_main = strlen(a);
    return length_main < length_pre ? 0 : memcmp(b, a, length_pre) == 0;
}

void exec_command(char *command) {
    if (starts_with(command, "ls"))
        vesa_draw_string("Listing files\n");
    else if (starts_with(command, "help"))
        vesa_draw_string("I can't help you write now\n");
    else if (starts_with(command, "ping"))
        vesa_draw_string("pong!\n");
    else if (starts_with(command, "clear"))
        vesa_clear();
    else if (starts_with(command, "shutdown") || starts_with(command, "exit"))
        acpi_poweroff();
    else if (starts_with(command, "zzz"))
        vesa_draw_string("Not implemented\n");
    else if (starts_with(command, "time")) {
        vesa_draw_number((int) get_time());
        vesa_draw_string("\n");
    } else if (starts_with(command, "date"))
        write_time();
    else if (starts_with(command, "reboot"))
        reboot();
    else if (command[0] != 0)
        vesa_draw_string("Command not found!\n");
}