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https://https.git.savannah.gnu.org/git/bash.git
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commit bash-20060316 snapshot
This commit is contained in:
Chet Ramey
@@ -0,0 +1,454 @@
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/* error.c -- Functions for handling errors. */
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/* Copyright (C) 1993-2003 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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Bash is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License along
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with Bash; see the file COPYING. If not, write to the Free Software
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Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
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#include "config.h"
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#include "bashtypes.h"
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#include <fcntl.h>
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#if defined (HAVE_UNISTD_H)
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# include <unistd.h>
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#endif
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#if defined (PREFER_STDARG)
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# include <stdarg.h>
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#else
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# include <varargs.h>
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#endif
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#include <stdio.h>
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#include <errno.h>
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#if !defined (errno)
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extern int errno;
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#endif /* !errno */
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#include "bashansi.h"
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#include "bashintl.h"
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#include "shell.h"
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#include "flags.h"
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#include "input.h"
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#if defined (HISTORY)
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# include "bashhist.h"
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#endif
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extern int executing_line_number __P((void));
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extern int interactive_shell, interactive, startup_state;
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extern char *dollar_vars[];
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extern char *shell_name;
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#if defined (JOB_CONTROL)
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extern pid_t shell_pgrp;
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extern int give_terminal_to __P((pid_t, int));
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#endif /* JOB_CONTROL */
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#if defined (ARRAY_VARS)
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extern char *bash_badsub_errmsg;
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#endif
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static void error_prolog __P((int));
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/* The current maintainer of the shell. You change this in the
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Makefile. */
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#if !defined (MAINTAINER)
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#define MAINTAINER "bash-maintainers@gnu.org"
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#endif
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char *the_current_maintainer = MAINTAINER;
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int gnu_error_format = 0;
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static void
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error_prolog (print_lineno)
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int print_lineno;
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{
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char *ename;
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int line;
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ename = get_name_for_error ();
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line = (print_lineno && interactive_shell == 0) ? executing_line_number () : -1;
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if (line > 0)
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fprintf (stderr, "%s:%s%d: ", ename, gnu_error_format ? "" : " line ", line);
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else
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fprintf (stderr, "%s: ", ename);
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}
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/* Return the name of the shell or the shell script for error reporting. */
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char *
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get_name_for_error ()
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{
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char *name;
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#if defined (ARRAY_VARS)
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SHELL_VAR *bash_source_v;
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ARRAY *bash_source_a;
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#endif
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name = (char *)NULL;
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if (interactive_shell == 0)
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{
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#if defined (ARRAY_VARS)
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bash_source_v = find_variable ("BASH_SOURCE");
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if (bash_source_v && array_p (bash_source_v) &&
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(bash_source_a = array_cell (bash_source_v)))
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name = array_reference (bash_source_a, 0);
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if (name == 0)
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#endif
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name = dollar_vars[0];
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}
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if (name == 0 && shell_name && *shell_name)
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name = base_pathname (shell_name);
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if (name == 0)
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#if defined (PROGRAM)
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name = PROGRAM;
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#else
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name = "bash";
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#endif
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return (name);
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}
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/* Report an error having to do with FILENAME. This does not use
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sys_error so the filename is not interpreted as a printf-style
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format string. */
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void
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file_error (filename)
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const char *filename;
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{
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report_error ("%s: %s", filename, strerror (errno));
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}
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void
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#if defined (PREFER_STDARG)
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programming_error (const char *format, ...)
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#else
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programming_error (format, va_alist)
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const char *format;
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va_dcl
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#endif
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{
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va_list args;
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char *h;
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#if defined (JOB_CONTROL)
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give_terminal_to (shell_pgrp, 0);
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#endif /* JOB_CONTROL */
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SH_VA_START (args, format);
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vfprintf (stderr, format, args);
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fprintf (stderr, "\n");
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va_end (args);
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#if defined (HISTORY)
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if (remember_on_history)
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{
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h = last_history_line ();
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fprintf (stderr, _("last command: %s\n"), h ? h : "(null)");
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}
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#endif
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#if 0
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fprintf (stderr, "Report this to %s\n", the_current_maintainer);
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#endif
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fprintf (stderr, _("Aborting..."));
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fflush (stderr);
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abort ();
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}
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/* Print an error message and, if `set -e' has been executed, exit the
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shell. Used in this file by file_error and programming_error. Used
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outside this file mostly to report substitution and expansion errors,
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and for bad invocation options. */
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void
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#if defined (PREFER_STDARG)
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report_error (const char *format, ...)
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#else
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report_error (format, va_alist)
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const char *format;
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va_dcl
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#endif
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{
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va_list args;
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error_prolog (1);
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SH_VA_START (args, format);
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vfprintf (stderr, format, args);
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fprintf (stderr, "\n");
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va_end (args);
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if (exit_immediately_on_error)
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exit_shell (1);
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}
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void
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#if defined (PREFER_STDARG)
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fatal_error (const char *format, ...)
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#else
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fatal_error (format, va_alist)
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const char *format;
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va_dcl
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#endif
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{
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va_list args;
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error_prolog (0);
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SH_VA_START (args, format);
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vfprintf (stderr, format, args);
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fprintf (stderr, "\n");
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va_end (args);
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sh_exit (2);
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}
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void
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#if defined (PREFER_STDARG)
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internal_error (const char *format, ...)
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#else
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internal_error (format, va_alist)
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const char *format;
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va_dcl
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#endif
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{
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va_list args;
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error_prolog (1);
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SH_VA_START (args, format);
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vfprintf (stderr, format, args);
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fprintf (stderr, "\n");
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va_end (args);
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}
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void
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#if defined (PREFER_STDARG)
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internal_warning (const char *format, ...)
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#else
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internal_warning (format, va_alist)
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const char *format;
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va_dcl
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#endif
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{
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va_list args;
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fprintf (stderr, _("%s: warning: "), get_name_for_error ());
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SH_VA_START (args, format);
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vfprintf (stderr, format, args);
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fprintf (stderr, "\n");
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va_end (args);
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}
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void
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#if defined (PREFER_STDARG)
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sys_error (const char *format, ...)
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#else
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sys_error (format, va_alist)
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const char *format;
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va_dcl
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#endif
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{
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int e;
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va_list args;
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e = errno;
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error_prolog (0);
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SH_VA_START (args, format);
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vfprintf (stderr, format, args);
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fprintf (stderr, ": %s\n", strerror (e));
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va_end (args);
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}
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/* An error from the parser takes the general form
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shell_name: input file name: line number: message
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The input file name and line number are omitted if the shell is
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currently interactive. If the shell is not currently interactive,
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the input file name is inserted only if it is different from the
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shell name. */
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void
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#if defined (PREFER_STDARG)
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parser_error (int lineno, const char *format, ...)
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#else
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parser_error (lineno, format, va_alist)
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int lineno;
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const char *format;
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va_dcl
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#endif
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{
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va_list args;
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char *ename, *iname;
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ename = get_name_for_error ();
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iname = yy_input_name ();
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if (interactive)
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fprintf (stderr, "%s: ", ename);
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else if (interactive_shell)
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fprintf (stderr, "%s: %s:%s%d: ", ename, iname, gnu_error_format ? "" : " line ", lineno);
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else if (STREQ (ename, iname))
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fprintf (stderr, "%s:%s%d: ", ename, gnu_error_format ? "" : " line ", lineno);
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else
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fprintf (stderr, "%s: %s:%s%d: ", ename, iname, gnu_error_format ? "" : " line ", lineno);
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SH_VA_START (args, format);
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vfprintf (stderr, format, args);
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fprintf (stderr, "\n");
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va_end (args);
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if (exit_immediately_on_error)
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exit_shell (2);
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}
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#ifdef DEBUG
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void
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#if defined (PREFER_STDARG)
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itrace (const char *format, ...)
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#else
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itrace (format, va_alist)
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const char *format;
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va_dcl
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#endif
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{
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va_list args;
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fprintf(stderr, "TRACE: pid %ld: ", (long)getpid());
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SH_VA_START (args, format);
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vfprintf (stderr, format, args);
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fprintf (stderr, "\n");
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va_end (args);
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fflush(stderr);
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}
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/* A trace function for silent debugging -- doesn't require a control
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terminal. */
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void
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#if defined (PREFER_STDARG)
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trace (const char *format, ...)
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#else
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trace (format, va_alist)
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const char *format;
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va_dcl
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#endif
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{
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va_list args;
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static FILE *tracefp = (FILE *)NULL;
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if (tracefp == NULL)
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tracefp = fopen("/tmp/bash-trace.log", "a+");
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if (tracefp == NULL)
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tracefp = stderr;
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else
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fcntl (fileno (tracefp), F_SETFD, 1); /* close-on-exec */
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fprintf(tracefp, "TRACE: pid %ld: ", (long)getpid());
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SH_VA_START (args, format);
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vfprintf (tracefp, format, args);
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fprintf (tracefp, "\n");
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va_end (args);
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fflush(tracefp);
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}
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#endif /* DEBUG */
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/* **************************************************************** */
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/* */
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/* Common error reporting */
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/* */
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/* **************************************************************** */
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static char *cmd_error_table[] = {
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N_("unknown command error"), /* CMDERR_DEFAULT */
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N_("bad command type"), /* CMDERR_BADTYPE */
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N_("bad connector"), /* CMDERR_BADCONN */
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N_("bad jump"), /* CMDERR_BADJUMP */
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0
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};
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void
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command_error (func, code, e, flags)
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const char *func;
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int code, e, flags; /* flags currently unused */
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{
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if (code > CMDERR_LAST)
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code = CMDERR_DEFAULT;
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programming_error ("%s: %s: %d", func, _(cmd_error_table[code]), e);
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}
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char *
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command_errstr (code)
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int code;
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{
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if (code > CMDERR_LAST)
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code = CMDERR_DEFAULT;
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return (_(cmd_error_table[code]));
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}
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#ifdef ARRAY_VARS
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void
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err_badarraysub (s)
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const char *s;
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{
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report_error ("%s: %s", s, _(bash_badsub_errmsg));
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}
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#endif
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void
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err_unboundvar (s)
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const char *s;
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{
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report_error (_("%s: unbound variable"), s);
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}
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void
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err_readonly (s)
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const char *s;
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{
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report_error (_("%s: readonly variable"), s);
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}
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