void displayElements(fifolifo **e) {
fifolifo *aux;
char c;
if (isEmpty(*e))
printf("empty FIFO\n");
else {
initialize(&aux);
while (!isEmpty(*e)) {
printf("ELEMENT: %c\n", displayElement(*e));
insertFIFO(&aux, removeElement(e));
}
while (!isEmpty(aux))
insertFIFO(e, removeElement(&aux));
}
}
int main() {
FILE *f;
char c, fileName[10];
fifolifo *fifo, *lifo;
initialize(&fifo);
initialize(&lifo);
do {
printf("FILENAME: ");
scanf("%[^\n]s", fileName);
getchar();
f = fopen(fileName, "r");
if (!f)
printf("'%s' not exist\n", fileName);
} while (!f);
while (((c = getc(f)) != EOF) && (c != '\n'))
insertFIFO(&fifo, c);
fclose(f);
displayElements(&fifo);
system("pause");
return 0;
}
unsigned getUsers ( char * searchKey , userDataType ** firstFound )
{
unsigned retCode, retCode2;
unsigned counter , secondCounter;
char usersFileName [MAX_LENGTH_LONG_FILENAME+1];
userDataType buffer;
FILE * readFile;
boolean matches;
userDataType * lastFound = NULL;
if (! searchKey )
return ( GET_USERS__INVALID_SEARCH_KEY );
if (( retCode = getLongFilename ( DATA_DIR , USERS_FILE_NAME , usersFileName )) != OK )
return (retCode);
if (!(readFile = fopen ( usersFileName , "r" )))
{
if (errno != ENOENT)
return ( GET_USERS__ERROR_OPENING_USERS_FILE_FOR_READING );
return ( GET_USERS__USERS_FILE_DOES_NOT_EXIST );
}
( * firstFound ) = NULL;
matches = true;
for( retCode = 0 ; retCode != GET_USER_ID__END_OF_FILE ; )
{
if (( retCode = getUserData ( readFile , USERS_FILE_NAME , &buffer )) != OK )
{
if (retCode != GET_USER_ID__END_OF_FILE)
{
fclose ( readFile );
freeFIFOResources ( firstFound , &lastFound );
return ( retCode );
}
}
if ( retCode != GET_USER_ID__END_OF_FILE )
{
for ( matches = false , counter = 0 ; ( (buffer.name[counter] != EOS) && ( !matches ) ) ; counter++ )
if ( buffer.name[counter] == searchKey[0] )
{
matches = true;
for ( secondCounter = 1 ; ( ( searchKey[secondCounter] != EOS ) && ( matches ) ) ; secondCounter++ )
if ( searchKey [secondCounter] != buffer.name [counter + secondCounter] )
matches = false;
}
if ( matches )
{
if( ( retCode2 = insertFIFO ( firstFound, &lastFound, &buffer ) ) != OK )
{
fclose ( readFile );
freeFIFOResources ( firstFound , &lastFound );
return ( retCode2);
}
}
}
}
// fclose ( readFile );
if ( ! ( * firstFound ) )
return ( GET_USERS__NO_USER_FOUND );
return ( OK );
}