#line 23 "caller.def"
#line 38 "caller.def"
#include <config.h>
#include <stdio.h>
#include "chartypes.h"
#include "bashtypes.h"
#if defined (HAVE_UNISTD_H)
# ifdef _MINIX
# include <sys/types.h>
# endif
# include <unistd.h>
#endif
#include <errno.h>
#include "../bashintl.h"
#include "../shell.h"
#include "common.h"
#include "builtext.h"
#include "bashgetopt.h"
#ifdef LOADABLE_BUILTIN
# include "builtins.h"
#endif
#if !defined (errno)
extern int errno;
#endif
int
caller_builtin (list)
WORD_LIST *list;
{
#if !defined (ARRAY_VARS)
printf ("1 NULL\n");
return (EXECUTION_FAILURE);
#else
SHELL_VAR *funcname_v, *bash_source_v, *bash_lineno_v;
ARRAY *funcname_a, *bash_source_a, *bash_lineno_a;
char *funcname_s, *source_s, *lineno_s;
intmax_t num;
GET_ARRAY_FROM_VAR ("FUNCNAME", funcname_v, funcname_a);
GET_ARRAY_FROM_VAR ("BASH_SOURCE", bash_source_v, bash_source_a);
GET_ARRAY_FROM_VAR ("BASH_LINENO", bash_lineno_v, bash_lineno_a);
if (bash_lineno_a == 0 || array_empty (bash_lineno_a))
return (EXECUTION_FAILURE);
if (bash_source_a == 0 || array_empty (bash_source_a))
return (EXECUTION_FAILURE);
if (no_options (list))
return (EX_USAGE);
list = loptend;
if (list == 0)
{
lineno_s = array_reference (bash_lineno_a, 0);
source_s = array_reference (bash_source_a, 1);
printf("%s %s\n", lineno_s ? lineno_s : "NULL", source_s ? source_s : "NULL");
return (EXECUTION_SUCCESS);
}
if (funcname_a == 0 || array_empty (funcname_a))
return (EXECUTION_FAILURE);
if (legal_number (list->word->word, &num))
{
lineno_s = array_reference (bash_lineno_a, num);
source_s = array_reference (bash_source_a, num+1);
funcname_s = array_reference (funcname_a, num+1);
if (lineno_s == NULL|| source_s == NULL || funcname_s == NULL)
return (EXECUTION_FAILURE);
printf("%s %s %s\n", lineno_s, funcname_s, source_s);
}
else
{
sh_invalidnum (list->word->word);
builtin_usage ();
return (EXECUTION_FAILURE);
}
return (EXECUTION_SUCCESS);
#endif
}
#ifdef LOADABLE_BUILTIN
static char *caller_doc[] = {
N_("Returns the context of the current subroutine call."),
N_(" "),
N_("Without EXPR, returns returns \"$line $filename\". With EXPR,"),
N_("returns \"$line $subroutine $filename\"; this extra information"),
N_("can be used used to provide a stack trace."),
N_(" "),
N_("The value of EXPR indicates how many call frames to go back before the"),
N_("current one; the top frame is frame 0."),
(char *)NULL
};
struct builtin caller_struct = {
"caller",
caller_builtin,
BUILTIN_ENABLED,
caller_doc,
"caller [EXPR]",
0
};
#endif