void
dumpCommandList(const AmCommandList *commandList)
{
int i;
for (i = 0; i < commandList->commandCount; i++) {
dumpCommand(commandList->commands[i]);
}
}
int main()
{
const char *whitespace = " \n\r\f\t\v"; //Whitespace characters.
char buffer[81]; //Buffer to hold 80 characters plus 1 null terminator.
List* tokens;
Command* command;
/* enter into an infinite loop, prompting user for input, processing the input,
until user decides to exit */
while(1)
{
//Read in up to 80 characters or until the newline is encountered.
displayPrompt();
if (!fgets(buffer, 81, stdin))
{
printf("\nfgets() failed.\n");
buffer[0] = 0;
continue;
}
/* first we tokenize the command by whitespace */
tokens = tokenize(buffer, whitespace);
/* then we turn the command into a Command object */
command = listToCommand(tokens);
/* then we expand the environment variables (if any) */
if(expandEnvironmentVars(command) == 0)
{
/* then we setup the command for redirection, if necessary */
setupRedirection(command);
/* check out our command, ensure it's been processed correctly and is ready for execution */
if(DEBUG) dumpCommand(command);
executeCommand(command);
}
/* cleanup after ourselves */
linkedListClear(tokens);
if(tokens != NULL)
free(tokens);
if(command != NULL)
{
linkedListClear(command->command);
if(command->command != NULL)
free(command->command);
if(command->infile != NULL)
free(command->infile);
if(command->outfile != NULL)
free(command->outfile);
free(command);
}
}
return 0;
}