/*Define here what the action characters on the map will do when entered on their area*/
void pAAction(int aChar)
{
if (strcmp(mapName, "menu") == 0)
{
switch (aChar)
{
case 1:
initializeSort();
switchMap("filtering");
break;
case 2:
initializeSort();
switchMap("sorting");
break;
case 3:
teleport(aChar);
break;
case 4:
closeProg();
break;
}
}
else if (strcmp(mapName, "sorting") == 0)
{
switch (aChar)
{
case A:
teleport(B);
scrollData(UP);
break;
case C:
teleport(B);
scrollData(DOWN);
break;
}
}
else if (strcmp(mapName, "filtering") == 0)
{
switch (aChar)
{
case 1:
teleport(2);
scrollData(UP);
break;
case 3:
teleport(2);
scrollData(DOWN);
break;
case 7:
closeDoor(Q, DOWN);
break;
case 8:
closeDoor(W, UP);
break;
}
}
else
{
perror ("'mapName' out of speck");
SC(mapName);
assert(!TRUE);
}
}
int main(int argc,char** argv){
int totalBytes=0;
int sp=0; //File descriptor for source program
int tp=0; //File descriptor for target program
int numBytes=0; //Number of bytes read or written
char * buf=NULL; //Buffer that has NOBYTES (number of bytes); used to read and write
if((buf = malloc(NOBYTES))==0) error(OTHER);
//sigaction() is more portable than signal():
struct sigaction sigAct;
sigAct.sa_handler = copyStatus;
sigAct.sa_flags = SA_RESTART;
//Use this to print if the file takes a long time to copy.
if(sigaction(SIGALRM,&sigAct,NULL)<0){
error(OTHER);
}
if(alarm(1)<0) error(OTHER);
//If there are not exactly three arguments, send an error code to the user and exit.
if(argc!=3){
error(ARGER);
}else if(strcmp(argv[1],argv[2])==0){
error(AR2ER);
}else{
//Open the source file
if((sp = open(argv[1],O_RDONLY))==-1){
//Error, value of -1 returned
error(REAER);
}else{
//Want to open the file we're going to write to:
if((tp=creat(argv[2],S_IRUSR|S_IWUSR))==-1){
//Error creating file.
error(WRIER);
}else{
//Here, we have successfully opened both files.
//Want to read from file:
do{
memset(buf,0,strlen(buf));
#ifdef DEBUG
printf("Buffer: ####%s####\n",buf);
#endif
if((numBytes = read(sp,buf,NOBYTES))==-1){
//Error reading from file
//Deal with error here.
//Check to see if it was from the signalAction
if(errno == EINTR){
//Try to read again.
continue;
}else{
error(REAER);
}
}else{
//Increment the total number of bytes copied:
totalBytes+=numBytes;
if(numBytes < NOBYTES){
#ifdef DEBUG
//Print out results:
printf("@@@@%s@@@@",buf);
printf("%d : string length\n",strlen(buf));
#endif
if((write(tp,buf,strlen(buf)))==-1){
//If it's an interrupt, try writing again, otherwise, exit.
if(errno == EINTR){
//Try to read again.
continue;
}else{
error(WRIER);
}
}
numBytes = 0;
}else{
#ifdef DEBUG
//Print out results:
printf("@@@@%s@@@@",buf);
printf("%d : string length\n",strlen(buf));
#endif
//Take the buffer and write to the other file
if((write(tp,buf,strlen(buf)))==-1){
//If it's an interrupt, try writing again, otherwise, exit.
if(errno == EINTR){
//Try to read again.
continue;
}else{
error(WRIER);
}
}
}
}
#ifdef DEBUG
printf("Bytes read: %d\n",numBytes);
sleep(1000);
#endif
}while (numBytes>0);
}
//Need to close the files:
if(close(sp)<0) error(OTHER);
if(close(tp)<0) error(OTHER);
}
}
//Deallocate memory and give a closing message to the user.
free(buf);
closeProg(totalBytes,argv[1],argv[2]);
exit(0);
}
