int main( int argc, char *argv[], char *env[] )
{
char Prompt[MAXSIZE];
char Input[MAXSIZE];
int i;
/* Point to our name */
PROGNAME = argv[0];
/*
* Starting from the first true argument, scan the argument table
*/
for( i = 1; i < argc; i++ )
{
if( !strncmp( argv[i], "--version", 10 ) )
{
Version();
}
if( !strncmp( argv[i], "--help", 7 ) )
{
Usage();
}
}
/* Construct the prompt */
constructPrompt( Prompt, MAXSIZE );
/*
* Infinite loop to read in from the user
* If the user presses Ctrl-D then the loop exits
*/
for( printf("%s", Prompt); fgets( Input, MAXSIZE, stdin) != NULL;
printf("%s", Prompt) )
{
fprintf(stdout,"Input from user: %s\n", Input );
/*
* The user has typed in quit all by itself
*/
if( !strncmp( Input, "quit\n", 5 ) )
{
break;
}
}
printf("\nProgram exit.\n");
return 0;
}
int main( int argc, char *argv[], char *env[] )
{
char Prompt[MAXSIZE];
char Input[MAXSIZE];
int i;
int count;
char *look;
Process *child;
Parser *p;
Executor *e;
/* Point to our name */
PROGNAME = argv[0];
/*
* Construct a parser to handle the input
*
* We delimit on the space and "|" for now, but need to keep the
* "|" so we need to it as a Special Delimiter
*/
p = Parser_new();
Parser_setDelimiters( p, " |" );
Parser_setSpecialDelimiters( p, "|" );
/*
* Construct an executor to run the commands
*
* We delimit on the "|" for now
*/
e = Executor_new();
Executor_setExecDelimiters( e, "|" );
/*
* Setup the signals
*/
setupSignals();
/*
* Starting from the first true argument, scan the argument table
*/
for( i = 1; i < argc; i++ )
{
if( !strncmp( argv[i], "--version", 10 ) )
{
Version();
}
if( !strncmp( argv[i], "--help", 7 ) )
{
Usage();
}
}
/* Construct the prompt */
constructPrompt( Prompt, MAXSIZE );
do
{
gotSignal = 0;
/* Infinite loop to read in from the user */
for( printf("%s ", Prompt); fgets( Input, MAXSIZE, stdin) != NULL;
printf("%s ", Prompt) )
{
/* They just pressed Enter */
if( *Input == '\n' )
{
continue;
}
/* Quit */
if( !strncmp( Input, "exit\n", 5 ) )
{
gotSignal = 0;
break;
}
/*
* Background the process */
if( !strncmp( Input, "bg\n", 3 ) )
{
child = ProcControl_get(ProcControl_numProcs());
if( child != NULL )
{
printf("Backgrounded %d ", Process_getPID(child));
Process_printCommand( child, stdout );
printf("\n");
Process_resume(child);
Parser_clear( p );
gotSignal = 0;
}
else
{
fprintf( stderr, "\n!!! There is no child to background.\n" );
}
ProcControl_printTable( stdout );
continue;
}
/*
* List current jobs
*/
if( !strncmp( Input, "jobs\n", 5 ) )
{
ProcControl_printTable( stdout );
Parser_clear(p);
gotSignal = 0;
continue;
}
/*
* Foreground the last process
*/
if( !strncmp( Input, "fg\n", 3 ) )
{
child = ProcControl_get(ProcControl_numProcs());
RUNNING = child;
if( child != NULL )
{
Process_resume( RUNNING );
printf("Forground process %d ", Process_getPID(RUNNING) );
Process_printCommand( RUNNING, stdout );
printf("\n");
Process_wait( RUNNING, PROCESS_WAIT );
Parser_clear(p);
gotSignal = 0;
}
else
{
fprintf(stderr, "\n!!! There are no backgrounded children to "
"bring to the fore.\n\n");
}
continue;
}
/* Parse the input */
Parser_parse( p, Input );
while( (RUNNING = Executor_execute( e, p ) ) != NULL)
{
ProcControl_add(RUNNING);
Process_start( RUNNING );
if( RUNNING != NULL )
{
Process_wait( RUNNING, PROCESS_WAIT);
}
}
/* Clear the parser's token list */
Parser_clear( p );
gotSignal = 0;
}
}while( gotSignal );
printf("\nProgram exit.\n");
/* Clean up children that haven't finished */
ProcControl_free();
/* Free our parser and executor */
Parser_free( p );
Executor_free( e );
Signal_clear();
return 0;
}