/*
**主函数
*/
int main (void)
{
int choice;
struct student * head, * phead;
struct student * p1;
printf("\033[36;m");
menu();
scanf ("%d",&choice);
while (choice != 0)
{
switch (choice )
{
case 1:
head = creat_list ();
printf("录入完毕,任意键返回\n");
clear_s();
break;
case 2:
print_list (head);
printf ("输出完毕,任意键返回\n");
clear_s();
break;
case 3:
delete_list(head);
if (head == NULL)
{
printf ("删除不成功,请选择:\n");
scanf ("%d",&choice);
break;
}
printf ("删除完毕,任意键返回\n");
clear_s();
break;
case 4:
p1 = find_stu(head);
print_find(p1);
printf ("查找完毕,任意键返回\n");
clear_s();
break;
case 5:
phead = ave_list (head);
print_list(phead);
printf ("排序完毕,任意键返回\n");
clear_s();
break;
case 6:
head = insert (head);
print_list(head);
printf ("插入完毕,任意键返回\n");
clear_s();
break;
case 0:
exit (0);
break;
}
scanf ("%d",&choice);
}
}
int main(int argc, char *argv[])
{
char* arguments[MAX_ARGS];
pipe(pipefd);
signal(SIGCHLD, sig_chld_handler); //catching sigchld signal, for showing approporiate message when a child process has terminated
printf("Basic Shell >");
int counter = 0;
int is_blocking;
char** commands;
while ((flagwhile==1)&&(fgets(s,in,stdin)!=NULL)) /// command to reading from stdin 80 char in S
{
commands = splitCmd(s);
if( overflowecheck() == 1)
{
printf("Overflowe!!!");
}
else
{
counter =0;
while(commands[counter]!= '\0')
{
is_blocking = parseCommand(commands[counter], arguments); // convert command string to an array
if(arguments[0] !='\0') // check whether the input was an empty string or not
{
if (strcmp(arguments[0], "exit") == 0)
{
exit(EXIT_SUCCESS);
}
else if(strcmp(arguments[0], "cd") == 0)
{
if(chdir(arguments[1]) == -1)
{
//on error
printf("%s\n",strerror(errno));
}
} else if(strcmp(arguments[0], "source") == 0)
{
FILE * f;
char * fline = NULL;
size_t flen = 0;
ssize_t read;
f = fopen(arguments[1], "r");
if (f == NULL)
{
printf("file open error\n");
return EXIT_FAILURE;
}
while ((read = getline(&fline, &flen, f)) != -1)
{
char* arguments2[MAX_ARGS];
is_blocking = parseCommand(fline, arguments2);
execLauncher(arguments2, is_blocking);
}
free(fline);
// return EXIT_SUCCESS;
}
else
{
execLauncher(arguments, is_blocking);
}
}
counter++;
}
}
free(commands);// free the memory which allocated for the buffer
clear_s();
redirect_stdout = false;
redirect_stdin = false;
piping = false;
printf("Basic Shell >");
}//end while
return 0;
}// end main