Bash is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 1, or (at your option) any later
+Software Foundation; either version 2, or (at your option) any later
version.
Bash is distributed in the hope that it will be useful, but WITHOUT ANY
You should have received a copy of the GNU General Public License along
with Bash; see the file COPYING. If not, write to the Free Software
-Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
/* Flags hacking. */
#include "config.h"
#include "shell.h"
#include "flags.h"
+#if defined (BANG_HISTORY)
+# include "bashhist.h"
+#endif
+
#if defined (JOB_CONTROL)
-extern int set_job_control ();
+extern int set_job_control __P((int));
#endif
#if defined (RESTRICTED_SHELL)
extern char *shell_name;
#endif
+extern int shell_initialized;
+
+/* -c, -s invocation options -- not really flags, but they show up in $- */
+extern int want_pending_command, read_from_stdin;
+
/* **************************************************************** */
/* */
/* The Standard Sh Flags. */
/* Non-zero means read commands, but don't execute them. This is useful
for debugging shell scripts that should do something hairy and possibly
- desctructive. */
+ destructive. */
int read_but_dont_execute = 0;
/* Non-zero means end of file is after one command. */
int brace_expansion = 1;
#endif
+/* Non-zero means that shell functions inherit the DEBUG trap. */
+int function_trace_mode = 0;
+
+/* Non-zero means that shell functions inherit the ERR trap. */
+int error_trace_mode = 0;
+
+/* Non-zero means that the rightmost non-zero exit status in a pipeline
+ is the exit status of the entire pipeline. If each processes exits
+ with a 0 status, the status of the pipeline is 0. */
+int pipefail_opt = 0;
+
/* **************************************************************** */
/* */
/* The Flags ALIST. */
{ 'u', &unbound_vars_is_error },
{ 'v', &echo_input_at_read },
{ 'x', &echo_command_at_execute },
- { 'C', &noclobber },
/* New flags that control non-standard things. */
#if 0
{ 'l', &lexical_scoping },
#endif
- { 'I', &no_invisible_vars },
-
- { 'P', &no_symbolic_links },
-
#if defined (BRACE_EXPANSION)
{ 'B', &brace_expansion },
#endif
-
+ { 'C', &noclobber },
+ { 'E', &error_trace_mode },
#if defined (BANG_HISTORY)
{ 'H', &history_expansion },
#endif /* BANG_HISTORY */
-
+ { 'I', &no_invisible_vars },
+ { 'P', &no_symbolic_links },
+ { 'T', &function_trace_mode },
{0, (int *)NULL}
};
#define NUM_SHELL_FLAGS (sizeof (shell_flags) / sizeof (struct flags_alist))
+char optflags[NUM_SHELL_FLAGS+4] = { '+' };
+
int *
find_flag (name)
int name;
{
int *value, old_value;
- value = find_flag (flag);
-
#if defined (RESTRICTED_SHELL)
/* Don't allow "set +r" in a shell which is `restricted'. */
if (restricted && flag == 'r' && on_or_off == FLAG_OFF)
return (FLAG_ERROR);
#endif /* RESTRICTED_SHELL */
+ value = find_flag (flag);
+
if ((value == (int *)FLAG_UNKNOWN) || (on_or_off != FLAG_ON && on_or_off != FLAG_OFF))
return (FLAG_ERROR);
/* Special cases for a few flags. */
switch (flag)
{
+#if defined (BANG_HISTORY)
+ case 'H':
+ if (on_or_off == FLAG_ON)
+ bash_initialize_history ();
+ break;
+#endif
+
#if defined (JOB_CONTROL)
case 'm':
set_job_control (on_or_off == FLAG_ON);
break;
#endif /* JOB_CONTROL */
-#if defined (RESTRICTED_SHELL)
- case 'r':
- if (on_or_off == FLAG_ON)
- maybe_make_restricted (shell_name);
- break;
-#endif
-
-#if defined (BANG_HISTORY)
- case 'H':
- if (on_or_off == FLAG_ON)
- bash_initialize_history ();
+ case 'n':
+ if (interactive_shell)
+ read_but_dont_execute = 0;
break;
-#endif
case 'p':
if (on_or_off == FLAG_OFF)
disable_priv_mode ();
+ break;
+#if defined (RESTRICTED_SHELL)
+ case 'r':
+ if (on_or_off == FLAG_ON && shell_initialized)
+ maybe_make_restricted (shell_name);
break;
+#endif
+
}
return (old_value);
char *temp;
int i, string_index;
- temp = xmalloc (1 + NUM_SHELL_FLAGS);
+ temp = (char *)xmalloc (1 + NUM_SHELL_FLAGS + read_from_stdin + want_pending_command);
for (i = string_index = 0; shell_flags[i].name; i++)
if (*(shell_flags[i].value))
temp[string_index++] = shell_flags[i].name;
+ if (want_pending_command)
+ temp[string_index++] = 'c';
+ if (read_from_stdin)
+ temp[string_index++] = 's';
+
temp[string_index] = '\0';
return (temp);
}
place_keywords_in_env = read_but_dont_execute = just_one_command = 0;
noclobber = unbound_vars_is_error = echo_input_at_read = 0;
echo_command_at_execute = jobs_m_flag = forced_interactive = 0;
- no_symbolic_links = no_invisible_vars = privileged_mode = 0;
+ no_symbolic_links = no_invisible_vars = privileged_mode = pipefail_opt = 0;
hashing_enabled = interactive_comments = 1;
restricted = 0;
#endif
}
+
+void
+initialize_flags ()
+{
+ register int i;
+
+ for (i = 0; shell_flags[i].name; i++)
+ optflags[i+1] = shell_flags[i].name;
+ optflags[++i] = 'o';
+ optflags[++i] = ';';
+ optflags[i+1] = '\0';
+}