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main.c
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main.c
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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <sys/types.h>
#include <utime.h>
#include <dirent.h>
void printFiller ();
int returnCmdNum (char []);
int returnErrorFlag (int, int);
void printErrorMsg (int);
void oops (char*, char*);
void main(){
char inp[100], para1[20], para2[20], para3[20], cmd[10];
int numOfParas, cmdNum, errorFlag, processErrorFlag;
const char* inr_sym = "\u20B9 ";
printf("\nWelcome");
printf("\nFor more info use command -info");
printFiller();
while(1){
printf ("%s", inr_sym);
gets(inp);
if (inp[0] == '\0') continue;
numOfParas = sscanf (inp, "%s %s %s %s", cmd, para1, para2, para3 );
cmdNum = returnCmdNum (cmd);
if (cmdNum == 4){
printFiller ();
exit (0);
}
errorFlag = returnErrorFlag (cmdNum, numOfParas);
if (errorFlag != 0){
printErrorMsg (cmdNum);
continue;
}
if (cmdNum == -1) continue;
switch (cmdNum){
case 1: myCopy (para1, para2);
break;
case 2: myWrite (para1, para2);
break;
case 3: myInfo (para1);
break;
case 5: myTouch (para1);
break;
case 6: myCAT (para1);
break;
case 7: unlink (para1);
break;
case 8: myLs ();
break;
default: printf ("Sorry !! Something went wrong\nTry again");
}
printFiller ();
}
}
void printFiller(){
printf ("\n");
printf ("=============================");
printf ("\n");
}
int returnCmdNum (char command[10]){
if( !(strcmp(command, "copy")) || !(strcmp(command, "Copy")) || !(strcmp(command, "COPY")) || !(strcmp(command, "cpy"))) return 1;
if( !(strcmp(command, "write")) || !(strcmp(command, "Write")) || !(strcmp(command, "WRITE"))) return 2;
if( !(strcmp(command, "info")) || !(strcmp(command, "Info")) || !(strcmp(command, "INFO"))) return 3;
if( !(strcmp(command, "quit")) || !(strcmp(command, "Quit")) || !(strcmp(command, "q"))) return 4;
if( !(strcmp(command, "touch")) || !(strcmp(command, "Touch")) || !(strcmp(command, "tch"))) return 5;
if( !(strcmp(command, "cat")) || !(strcmp(command, "CAT"))) return 6;
if( !(strcmp(command, "delete")) || !(strcmp(command, "del"))) return 7;
if( !(strcmp(command, "list")) || !(strcmp(command, "ls"))) return 8;
return -1;
}
int returnErrorFlag (int cmdNum, int numOfParas){
if ((cmdNum == 3 || cmdNum >= 5) && numOfParas == 2) return 0;
if ((cmdNum ==1 || cmdNum == 2) && numOfParas == 3) return 0;
if (cmdNum == 8 && numOfParas == 1 ) return 0;
return 1;
}
void printErrorMsg (int cmdNum){
printFiller ();
printf ("ERROR");
switch (cmdNum){
case -1: printf ("\nCommand couldn't be recognised\ntry again\n");
break;
case 1: printf ("\ninvalid usage of copy\n");
break;
case 2: printf ("\ninvalid usage of write\n");
break;
case 3: printf ("\ninvalid usage of info\n");
break;
default: printf ("\ninvalid usage\n");
}
printf ("For more information use command \'info\'");
printFiller ();
}
void oops(char *s1, char *s2)
{
fprintf(stderr, "Error: %s ", s1);
perror(s2);
exit(1);
}