void executeWithPipe(char** commandArgs) {
char* firstCommand[MAX_COMMAND_LENGTH];
char* secondCommand[MAX_COMMAND_LENGTH];
int i = 0;
while (0 != strcmp(commandArgs[i], "|")) {
firstCommand[i] = commandArgs[i];
i++;
}
i++;
int j = i;
while (commandArgs[i] != NULL) {
secondCommand[i-j] = commandArgs[i];
i++;
}
#ifdef DEBUG
int test = 0;
while (firstCommand[test] != NULL) {
printf("%s\n", firstCommand[test]);
test++;
}
test = 0;
while (secondCommand[test] != NULL) {
printf("%s\n", secondCommand[test]);
test++;
}
#endif
char* pathArray[MAX_PATH_LENGTH];
int pathLength = getPathArray(pathArray);
int background = 0;
for (i = 0; i < pathLength; i++) {
char commandDir[100];
struct stat lstatBuff;
sprintf(commandDir, "%s/%s", pathArray[i], commandArgs[0]);
if (lstat(pathArray[i], &lstatBuff) == 0) {
#ifdef DEBUG
printf("%s\n", pathArray[i]);
#endif
int childPID = fork();
if (childPID == 0) {
int p[2];
int rc = pipe(p);
if ( rc < 0 ) {
perror( "pipe() failed" );
return;
}
int childPID2 = fork();
if (childPID2 == 0) {
close(p[0]);
dup2(p[1], 1);
execvp(firstCommand[0], firstCommand);
}
else {
close(p[1]);
dup2(p[0], 0);
execvp(secondCommand[0], secondCommand);
}
}
else if (background) {
signal(SIGCHLD, &deleteConnec);
waitpid(-1, NULL, WNOHANG);
}
else {
pid_t tempPID = waitpid(childPID, NULL, 0);
printf("Process %d terminated.\n", tempPID);
}
break;
}
}
}
void drawGameScreen() {
clear();
//draw exterior of game
drawBox(10, 3, 44, 34, 0);
//draw path walls
drawBox(10, 7, 11, 3, 0);
drawBox(18, 7, 4, 14, 0);
drawBox(18, 18, 16, 3, 0);
drawBox(31, 7, 4, 14, 0);
drawBox(31, 7, 18, 3, 0);
drawBox(46, 7, 4, 24, 0);
drawBox(19, 28, 30, 3, 0);
drawBox(19, 28, 4, 9, 0);
//fix up the corners
clearPath();
fixCorners();
//add beginning and ending chars
mvaddch(8, 8, '>');
mvaddch(37, 21, ACS_DARROW);
//draw and fill the purchase portion of the screen
attron(COLOR_PAIR(0));
drawPurchaseArea();
basicSetupScreen(1);
updateScore(0);
attroff(COLOR_PAIR(0));
drawTowerExplain();
//load arrays for drawing
TowerArray* theTowerList = getTowerArray("assets/towersLevel1.txt");
Path* thePath = getPathArray("assets/path.txt");
UnitListHeader * unitList = malloc(sizeof(UnitListHeader));
int moneyAmount = STARTINGMONEY;
initializeList(unitList);
drawUnitTypes(unitList);
int theScore = 0;
drawTowers(theTowerList);
//go to entering unit purchases (gives control back to user)
selectUnitsInterface(thePath,unitList,&moneyAmount,theTowerList,&theScore);
//get lowest score of highscores
ScoreHead scores;
scores.size = 0;
scores.first = NULL;
ScoreNode * currScore = NULL;
readScores(&scores);
currScore = scores.first;
int numScores = 1;
int highestScore = 0;
while ((currScore->next != NULL) && (numScores < 9)) {
numScores += 1;
currScore = currScore->next;
}
highestScore = -1;
if (numScores > 8 && currScore != NULL) {
highestScore = currScore->score;
}
char * enterName;
if (theScore > highestScore) {
enterName = drawScore(theScore,1);
if (enterName != NULL) {
addScore(&scores, enterName, theScore);
writeScores(&scores);
}
} else {
drawScore(theScore,0);
}
if (scores.size > 0) destroyScores(&scores);
}
void executeCommand(char* command) {
#ifdef DEBUG
printf("Inside executeCommand\n");
printf("%s\n", command);
#endif
int i = 0;
char* commandArgs[MAX_COMMAND_LENGTH];
commandArgs[0] = strtok(command, " ");
//int p = 0;
int background = 0;
i = 0;
while (commandArgs[i] != NULL) {
#ifdef DEBUG
printf("%s %d\n", commandArgs[i], i);
#endif
i++;
commandArgs[i] = strtok(NULL, " ");
}
int commandArgsLen = i;
for (i = 0; i < commandArgsLen; i++) {
if (0 == strcmp(commandArgs[i], "&")) {
//printf("%s\n", commandArgs[i]);
background = 1;
}
if (0 == (strcmp(commandArgs[i], "|"))) {
executeWithPipe(commandArgs);
return;
}
}
char* pathArray[MAX_PATH_LENGTH];
int pathLength = getPathArray(pathArray);
#ifdef DEBUG
for (i = 0; i < pathLength; i++) {
printf("%s\n", pathArray[i]);
}
#endif
#ifdef DEBUG
printf("%s", command);
printf("------\n");
#endif
if (0 == strcmp(commandArgs[0], "cd")) {
chdir(commandArgs[1]);
return;
}
if (0 == strcmp(commandArgs[0], "echo")) {
if ('$' == commandArgs[1][0]) {
char* enviroVar = getenv(++commandArgs[1]);
printf("%s\n", enviroVar);
}
else {
printf("%s\n", commandArgs[1]);
}
return;
}
for (i = 0; i < pathLength; i++) {
char commandDir[100];
struct stat lstatBuff;
sprintf(commandDir, "%s/%s", pathArray[i], commandArgs[0]);
if (lstat(pathArray[i], &lstatBuff) == 0) {
#ifdef DEBUG
printf("%s\n", pathArray[i]);
#endif
int childPID = fork();
if (childPID == 0) {
execvp(commandArgs[0], commandArgs);
}
else if (background) {
signal(SIGCHLD, &deleteConnec);
printf("[process running in background with pid %d]\n", childPID);
waitpid(-1, NULL, WNOHANG);
}
else {
pid_t tempPID = waitpid(childPID, NULL, 0);
printf("Process %d terminated.\n", tempPID);
}
return;
}
}
printf("ERROR: command '%s' not found\n", commandArgs[0]);
}
