int
shell_main(int argc, char **argv)
{
execpars ex;
char line[BUFSIZE];
struct cmdentry *cp;
unsigned fg, bg;
TaskInfo_t info;
char *hist[NHIST];
int pos, hfirst, hcur, hlast;
bool wait, found;
for ( hcur = 0 ; hcur < NHIST ; hcur++ )
hist[hcur] = Malloc(BUFSIZE);
hfirst = hcur = hlast = -1;
mt_cons_getattr(&fg, &bg);
GetInfo(CurrentTask(), &info);
while ( true )
{
// Leer línea de comando eventualmente usando la historia
mt_cons_setattr(LIGHTGRAY, BLACK);
mt_cons_cursor(true);
cprintk(LIGHTCYAN, BLACK, "\rMT%u> ", info.consnum);
mt_cons_clreom();
hcur = -1;
*line = 0;
do
{
switch ( pos = getline(line, sizeof line) )
{
case FIRST:
if ( (hcur = hfirst) != -1)
strcpy(line, hist[hcur]);
break;
case LAST:
if ( (hcur = hlast) != -1 )
strcpy(line, hist[hcur]);
break;
case BACK:
if ( hcur == -1 )
hcur = hlast;
else
if ( hcur != hfirst )
hcur = prev(hcur);
if ( hcur != -1 )
strcpy(line, hist[hcur]);
break;
case FWD:
if ( hcur != -1 )
{
if ( hcur == hlast )
{
hcur = -1;
*line = 0;
}
else
{
hcur = next(hcur);
strcpy(line, hist[hcur]);
}
}
break;
}
}
while ( pos < 0 );
// Sacar espacios al final y detectar comando en background
wait = true;
while ( --pos >= 0 )
{
char c = line[pos];
switch ( c )
{
case ' ':
case '\t':
case '\r':
case '\n':
line[pos] = 0;
continue;
}
if ( c == '&' )
wait = false;
break;
}
// Separar en argumentos
strcpy(ex.buf, line);
if ( !wait )
ex.buf[pos] = 0; // quitamos el & final antes de separar
ex.nargs = separate(ex.buf, ex.args, NARGS);
if ( !ex.nargs )
continue;
ex.args[ex.nargs] = NULL;
// Guardar línea en la historia si es distinta de la última
if ( hlast == -1 )
{
hlast = hfirst = 0;
strcpy(hist[hlast], line);
}
else if ( strcmp(hist[hlast], line) != 0 )
{
hlast = next(hlast);
if ( hfirst == hlast )
hfirst = next(hlast);
strcpy(hist[hlast], line);
}
/* Comandos internos */
if ( strcmp(ex.args[0], "help") == 0 )
{
printk("Comandos internos:\n");
printk("\thelp\n");
printk("\texit [status]\n");
printk("\treboot\n");
printk("Aplicaciones:\n");\
for ( cp = cmdtab ; cp->name ; cp++ )
printk("\t%s %s\n", cp->name, cp->params);
continue;
}
if ( strcmp(ex.args[0], "exit") == 0 )
{
mt_cons_setattr(fg, bg);
for ( hcur = 0 ; hcur < NHIST ; hcur++ )
Free(hist[hcur]);
return ex.nargs > 1 ? atoi(ex.args[1]) : 0;
}
if ( strcmp(ex.args[0], "reboot") == 0 )
{
*(short *) 0x472 = 0x1234;
while ( true )
outb(0x64, 0xFE);
}
/* Aplicaciones */
found = false;
for ( cp = cmdtab ; cp->name ; cp++ )
if ( strcmp(ex.args[0], cp->name) == 0 )
{
found = true;
ex.func = cp->func;
if ( wait ) // correr app y esperarla
{
int status;
Task_t *t = CreateTask(attached_app, MAIN_STKSIZE, &ex, ex.args[0], DEFAULT_PRIO);
Attach(t);
Ready(t);
while ( !Join(t, &status) )
;
if ( status != 0 )
{
cprintk(LIGHTRED, BLACK, "\rStatus: %d\n", status);
mt_cons_clreol();
}
}
else // correr app en background
{
Task_t *t = CreateTask(detached_app, MAIN_STKSIZE, &ex, ex.args[0], DEFAULT_PRIO);
cprintk(LIGHTGREEN, BLACK, "\rTask: %x\n", t);
mt_cons_clreol();
Ready(t);
Send(t, NULL, 0); // esperar que copie los parámetros
}
break;
}
if ( !found )
cprintk(LIGHTRED, BLACK, "Comando %s desconocido\n", ex.args[0]);
}
}
int
shell_main(int argc, char **argv)
{
char buf[BUFSIZE];
char *args[NARGS+1];
unsigned nargs;
struct cmdentry *cp;
unsigned fg, bg;
mt_cons_getattr(&fg, &bg);
while ( true )
{
mt_cons_setattr(LIGHTGRAY, BLACK);
cprintk(LIGHTCYAN, BLACK, PROMPT);
/* leer linea de comando, fraccionarla en tokens y armar argv */
mt_getline(buf, sizeof buf);
nargs = separate(buf, args, NARGS);
if ( !nargs )
continue;
args[nargs] = NULL;
/* comandos internos */
if ( strcmp(args[0], "help") == 0 )
{
printk("Comandos internos:\n");
printk("\thelp\n");
printk("\texit\n");
printk("\treboot\n");
printk("Aplicaciones:\n");\
for ( cp = cmdtab ; cp->name ; cp++ )
printk("\t%s\n", cp->name);
continue;
}
if ( strcmp(args[0], "exit") == 0 )
{
mt_cons_setattr(fg, bg);
return nargs > 1 ? atoi(args[1]) : 0;
}
if ( strcmp(args[0], "reboot") == 0 )
{
*(short *) 0x472 = 0x1234;
while ( true )
outb(0x64, 0xFE);
}
/* aplicaciones */
bool found = false;
for ( cp = cmdtab ; cp->name ; cp++ )
if ( strcmp(args[0], cp->name) == 0 )
{
found = true;
int n = cp->func(nargs, args);
if ( n != 0 )
cprintk(LIGHTRED, BLACK, "Status: %d\n", n);
break;
}
if ( !found )
cprintk(LIGHTRED, BLACK, "Comando %s desconocido\n", args[0]);
}
}
