void PascalSystem::Command::CommandAbstract::run() {
std::string req;
do {
req = getMessage();
if (isExitCommand(req)) {
break;
}
std::string res = handler(req);
sendResponse(res);
} while (true);
}
int main(int argc, char **argv)
{
if(isArgumentForShowingVersion(argv)) showVersionAndExit();
char *buf;
char *bufCopy;
pid_t pid = getpid();
pid_t backgroundJob;
int status = 0;
char *prompt = getPrompt();
int bg;
int jobNumber = 1;
int counts;
int jumpSet = 0;
char *arguments[2048];
initialize();
printf("\n");
setPrompt(prompt);
while ((buf = readline(prompt))) {
if(strlen(buf) != 0) {
bufCopy = buddy_malloc((strlen(buf)+1)*sizeof(char));
strcpy(bufCopy, buf);
add_history(bufCopy);
}
else
{
printFinishedJobs(jobList);
free(buf);
continue;
}
free(buf);
if(isCommandNotEmpty(bufCopy)) bg = isBackgroundCommand(bufCopy);
getArgument(arguments, bufCopy, &counts);
if(isExitCommand(bufCopy)){
buddy_free(bufCopy);
freeList(jobList);
if(arguments != NULL){
freeArguments(counts, arguments, NULL);
}
exit(0);
}
if(isCdCommand(bufCopy, arguments)){
changeDir(arguments);
freeArguments(counts, arguments, bufCopy);
}
else if(isJobsCommand(bufCopy)) {
printList(jobList);
freeArguments(counts, arguments, bufCopy);
}
else if(isFgCommand(bufCopy, arguments)){
fg(arguments, jobList, counts, bufCopy);
}
else if(isBgCommand(bufCopy, arguments)){
bgS(arguments, jobList, counts, bufCopy);
}
else if (isCommandNotEmpty(bufCopy))
{
if(bg == 1)
{
backgroundJob = fork();
if(backgroundJob == 0) {
ignoreSignals();
runCommand(arguments, bufCopy);
}
else{
NodePtr n = createAndSetNode(&jobNumber, backgroundJob, bufCopy, bg);
recordCommand(n, jobNumber, bg);
freeArguments(counts, arguments, bufCopy);
}
}
else
{
pid = fork();
if(pid == 0){
runCommand(arguments, bufCopy);
}
else {
NodePtr n = createAndSetNode(&jobNumber, pid, bufCopy, bg);
ignoreSignals();
if((waitpid(pid,&status,WUNTRACED))<0) err_sys("waitpid error");
freeArguments(counts, arguments, bufCopy);
restoreSignalsAndDetermineStatus(status, jobList, n);
}
}
}
else
{
freeArguments(counts, arguments, bufCopy);
}
if(jumpSet == 0){
sigsetjmp(env, 1);
jumpSet = 1;
}
continue;
}
if(buf == NULL) printf("\n");
exit(0);
}
