int main( int argc, char** argv ) {
command_t cmd;
char line[MAXSTRLEN];
char fullpath[MAXSTRLEN];
int done = FALSE;
while (!done) {
printf(">> ");
fgets(line, MAXSTRLEN, stdin);
line[my_strlen(line)-1] = '\0'; // get rid of newline
parse(line, &cmd);
if (my_strequal(cmd.name, "exit")) {
done = TRUE;
}
else if (is_builtin(&cmd)) {
do_builtin(&cmd);
}
else if (find_fullpath(fullpath, &cmd)) {
// NOTE: find_fullpath() is called again in execute
execute(&cmd);
}
else if (line[0] != '\0') { // non-blank line entered
printf("invalid command\n");
}
cleanup(&cmd);
}
return 0;
} // end main function
// -----------------------------------
// Main function
// Arguments: argc = number of arguments suppled by user
// argv = array of argument values
//
//
int main( int argc, char** argv ) {
int done;
char input[255];
command_t temp_command;
char tempPath[255];
//if statements for signal handling
if (signal(SIGCHLD, sig_child_handler) == SIG_ERR) {
perror("Unable to create new SIGCHLD signal handler!");
exit(-1);
}
// //if statements for ctrl-c handling
// if (signal(SIGINT, sig_int_handler) == SIG_ERR) {
// perror("Unable to create new SIGCHLD signal handler!");
// exit(-1);
// }
done = FALSE;
while (!done) {
printf("$");
fflush(stdout);
gets(input);
parse(input, &temp_command);
if (stringCompare(temp_command.name,"exit")==1)
{
done = TRUE;
}
else if (is_builtin(&temp_command))
{
do_builtin(&temp_command);
}
else if (find_fullpath(tempPath, &temp_command))
{
execute(&temp_command);
}
else {
printf("Command not found.\n");
}
cleanup(&temp_command);
}
// printf( "CSCI 340 Homework Assignment 2 - Have Fun!\n" );
return 0;
} // end main function
void run_cmd(char *cmdLine, int mode)
{
char *histCmd;
int redirect_status;
int loopback = 0;
start:
histCmd = strdup(cmdLine);
redirect_status = check_redirection(cmdLine);
if (redirect_status == REDIR_ERROR) {
if (mode == BATCH_MODE) {
display_full_command(histCmd);
}
printError();
free(cmdLine);
free(histCmd);
return;
}
char **shArgv = parseInput(cmdLine);
if (mode == BATCH_MODE && shArgv[0] != NULL && loopback == 0) {
display_full_command(histCmd);
}
int builtin = is_builtin(shArgv);
if (builtin != -1 && redirect_status == REDIR_OK_REDIR) {
printError();
free(cmdLine);
free(shArgv);
free(histCmd);
return;
}
if(builtin == 2) {
int isValid = check_re_exec(shArgv);
if(isValid) {
free(cmdLine);
free(shArgv);
free(histCmd);
cmdLine = strdup(re_exec_cmd);
free(re_exec_cmd);
loopback = 1;
goto start;
} else {
printError();
free(cmdLine);
free(shArgv);
free(histCmd);
return;
}
}
if(shArgv[0] != NULL) {
add_cmd(histCmd);
if(do_builtin(shArgv)) {
free(histCmd);
free(cmdLine);
free(shArgv);
return;
} else {
do_execute(shArgv,
redirect_status == REDIR_OK_REDIR ?
1 : 0, redir_file);
}
}
free(cmdLine);
free(shArgv);
free(histCmd);
}