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/* shift.c, created from shift.def. */
#line 22 "./shift.def"
#include <config.h>
#if defined (HAVE_UNISTD_H)
# ifdef _MINIX
# include <sys/types.h>
# endif
# include <unistd.h>
#endif
#include "../bashansi.h"
#include "../bashintl.h"
#include "../shell.h"
#include "common.h"
#line 49 "./shift.def"
int print_shift_error;
/* Shift the arguments ``left''. Shift DOLLAR_VARS down then take one
off of REST_OF_ARGS and place it into DOLLAR_VARS[9]. If LIST has
anything in it, it is a number which says where to start the
shifting. Return > 0 if `times' > $#, otherwise 0. */
int
shift_builtin (list)
WORD_LIST *list;
{
intmax_t times;
register int count;
WORD_LIST *temp;
if (get_numeric_arg (list, 0, ×) == 0)
return (EXECUTION_FAILURE);
if (times == 0)
return (EXECUTION_SUCCESS);
else if (times < 0)
{
sh_erange (list ? list->word->word : NULL, _("shift count"));
return (EXECUTION_FAILURE);
}
else if (times > number_of_args ())
{
if (print_shift_error)
sh_erange (list ? list->word->word : NULL, _("shift count"));
return (EXECUTION_FAILURE);
}
while (times-- > 0)
{
if (dollar_vars[1])
free (dollar_vars[1]);
for (count = 1; count < 9; count++)
dollar_vars[count] = dollar_vars[count + 1];
if (rest_of_args)
{
temp = rest_of_args;
dollar_vars[9] = savestring (temp->word->word);
rest_of_args = rest_of_args->next;
temp->next = (WORD_LIST *)NULL;
dispose_words (temp);
}
else
dollar_vars[9] = (char *)NULL;
}
return (EXECUTION_SUCCESS);
}
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