int date(char* argstr)
{
date_rec* date_p;
int err = 0, d, m, y;
char *tokenPtr;
char *months[12] = {"January","February","March","April","May","June","July", "August","September","October","November","December"};
char *day = sys_alloc_mem(2);
char *month = sys_alloc_mem(2);
char *year = sys_alloc_mem(4);
tokenPtr = strtok(argstr," "); // tokenize those args
if(tokenPtr == NULL){
sys_get_date(date_p);
printf("%s %d %d\n", months[date_p->month], date_p->day, date_p->year);
return err;
}
while (tokenPtr != NULL) {
if(!strcmp(tokenPtr, "-s\0")){
tokenPtr = strtok(NULL, " "); // next token plz
if(strlen(tokenPtr) != 8){ // if it ain't 8, we know they f****d up
printf("Invalid date string.\n");
break;
}
// grab those strings
strncpy(year, tokenPtr, 4);
strncpy(month, tokenPtr + 4, 2);
strncpy(day, tokenPtr + 6, 2);
// leading zeros? eh, let's make em ints anyway...
m = atoi(month)-1;
d = atoi(day);
y = atoi(year);
// are they even valid?
if(validDate(d,m,y)){
date_p->day = d;
date_p->month = m;
date_p->year = y;
err = sys_set_date(date_p);
printf("Changing system date to %s %d %d\n", months[m], d, y);
}
else{
printf("Invalid date string.\n");
break;
}
}
if(!strcmp(tokenPtr, "-h\0")){
printf("Usage of date:\n\tdate -s yyyymmdd\tChange the system date to the date specified.\n");
}
tokenPtr = strtok(NULL, " ");
}
return err;
}
/**
Procedure: handler_get_date
Purpose: Displays System Date
Parameters: None
Return value: Error Code; Zero If Ok
Calls: sys_get_date
Globals: None
Errors: None
**/
int handler_get_date(){
//Declare new date_rec variable
date_rec date;
//Call system function with date address passed in
sys_get_date(&date);
//Print date by accessing the attributes of the pointer to the struct
printf("The current date is: %d/%d/%d\n", date.month, date.day, date.year);
return 0;
}//end handler_get_Date
void mpxcmd_date( int argc, char *argv[] )
{
/* Temporary storage for the return value of sys_ functions. */
int retval;
/* Structure to hold a date (day, month, and year). */
date_rec date;
/* Called with no arguments, we should just print the date: */
if ( argc == 1 ){
sys_get_date(&date);
printf("Current MPX system date (yyyy-mm-dd): %04d-%02d-%02d\n",
date.year, date.month, date.day);
return;
}
/* Called with three arguments, we need to try to set the date
* from the values provided by the user. */
if ( argc == 4 ){
/* Convert string arguments to integer values: */
date.year = atoi(argv[1]);
date.month = atoi(argv[2]);
date.day = atoi(argv[3]);
/* Check that the user's input represents a valid date: */
if ( ! mpx_validate_date(date.year, date.month, date.day) ) {
/* Lines broken confusingly due to 80-column limit: */
printf("ERROR: Invalid date specified; ");
printf("MPX system date is unchanged.\n");
printf(" Valid dates are between 1900-01-01 ");
printf("and 2999-12-31, inclusive.\n");
return;
}
/* Attempt to set that date, catching errors: */
retval = sys_set_date(&date);
if ( retval != 0 ) {
printf("ERROR: sys_set_date() returned an error.\n");
return;
}
/* Success! */
printf("The MPX system date has been changed.\n");
return;
}
/* If we get to here, the user invoked the date command incorrectly. */
printf("ERROR: Wrong number of arguments to 'date'.\n");
printf(" Type 'help date' for usage information.\n");
}
/**
Procedure: handler_set_date
Purpose: Sets System Date
Parameters: None
Return value: 0
Calls: keyboardInput, sys_set_date, sys_get_date, errorCheck
Globals: None
Errors: Invalid Date, Date Not Changed
**/
int handler_set_date(){
char *Buffer;
int month;
int day;
int year;
int flag = 0;
int leapYear;
int i = 0;
printf("Enter the date in mmddyyyy format with no slashes or dashes: \n");
Buffer = keyboardInput(0);
while(i<8){
if(Buffer[i] < 48 || Buffer[i] > 57){
//printf("The date you entered is invalid!");
flag = 1;
}
i++;
}
if(flag == 0){
month = (Buffer[0] - 48)*10 + Buffer[1] - 48;
day = (Buffer[2] - 48)*10 + Buffer[3] - 48;
year = (Buffer[4] - 48)*1000 + (Buffer[5] - 48)*100 + (Buffer[6] - 48)*10 + Buffer[7] - 48;
if(year%4 == 0 && year%100 ==0 && year% 400 == 0){
leapYear = 1;
}
if(month > 12|| day < 1 || month < 1){
flag = 1;
}
if(leapYear==0){
if(month < 13 && month == 02 && day > 28){
flag = 1;
}else if(month <13 && month == 1 && day > 31){
flag = 1;
}else if(month <13 && month == 3 && day > 31){
flag = 1;
}else if(month <13 && month == 5 && day > 31){
flag = 1;
}else if(month <13 && month == 7 && day > 31){
flag = 1;
}else if(month <13 && month == 8 && day > 31){
flag = 1;
}else if(month <13 && month == 10 && day > 31){
flag = 1;
}else if(month <13 && month == 12 && day > 31){
flag = 1;
}else if(month <13 && month == 4 && day > 30){
flag = 1;
}else if(month <13 && month == 6 && day > 30){
flag = 1;
}else if(month <13 && month == 9 && day > 30){
flag = 1;
}else if(month <13 && month == 11 && day > 30){
flag = 1;
}
}else{
if(month < 13 && month == 02 && day > 29){
flag = 1;
}else if(month <13 && month == 1 && day > 31){
flag = 1;
}else if(month <13 && month == 3 && day > 31){
flag = 1;
}else if(month <13 && month == 5 && day > 31){
flag = 1;
}else if(month <13 && month == 7 && day > 31){
flag = 1;
}else if(month <13 && month == 8 && day > 31){
flag = 1;
}else if(month <13 && month == 10 && day > 31){
flag = 1;
}else if(month <13 && month == 12 && day > 31){
flag = 1;
}else if(month <13 && month == 4 && day > 30){
flag = 1;
}else if(month <13 && month == 6 && day > 30){
flag = 1;
}else if(month <13 && month == 9 && day > 30){
flag = 1;
}else if(month <13 && month == 11 && day > 30){
flag = 1;
}
}
}
if(flag == 0){
date_rec date;
date.month = month;
date.day = day;
date.year = year;
sys_set_date(&date);
sys_get_date(&date);
if(date.month != month || date.day != day || date.year != year){
errorCheck(-109);
}
}
else{
errorCheck(-108);
}
return 0;
}
