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Imported from ../bash-2.04.tar.gz.

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This commit is contained in:
Jari Aalto 2000-03-17 21:46:59 +00:00
commit bb70624e96
387 changed files with 28522 additions and 9334 deletions
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74
builtins/history.def
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@ -7,7 +7,7 @@ This file is part of GNU Bash, the Bourne Again SHell.
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
@ -17,18 +17,19 @@ for more details.
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.
$PRODUCES history.c
$BUILTIN history
$FUNCTION history_builtin
$DEPENDS_ON HISTORY
$SHORT_DOC history [-c] [n] or history -awrn [filename] or history -ps arg [arg...]
$SHORT_DOC history [-c] [-d offset] [n] or history -awrn [filename] or history -ps arg [arg...]
Display the history list with line numbers. Lines listed with
with a `*' have been modified. Argument of N says to list only
the last N lines. The -c option causes the history list to be
cleared by deleting all of the entries. The `-w' option writes out the
the last N lines. The `-c' option causes the history list to be
cleared by deleting all of the entries. The `-d' option deletes
the history entry at offset OFFSET. The `-w' option writes out the
current history to the history file; `-r' means to read the file and
append the contents to the history list instead. `-a' means
to append history lines from this session to the history file.
@ -49,8 +50,8 @@ $END
#ifndef _MINIX
# include <sys/file.h>
#endif
#include "../posixstat.h"
#include "../filecntl.h"
#include "posixstat.h"
#include "filecntl.h"
#include <errno.h>
#include <stdio.h>
#if defined (HAVE_UNISTD_H)
@ -72,6 +73,7 @@ extern int errno;
static void display_history ();
static void push_history ();
static int expand_and_print_history ();
static int delete_histent ();
#define AFLAG 0x01
#define RFLAG 0x02
@ -80,17 +82,19 @@ static int expand_and_print_history ();
#define SFLAG 0x10
#define PFLAG 0x20
#define CFLAG 0x40
#define DFLAG 0x80
int
history_builtin (list)
WORD_LIST *list;
{
int flags, opt, result;
char *filename;
char *filename, *delete_arg;
long delete_offset;
flags = 0;
reset_internal_getopt ();
while ((opt = internal_getopt (list, "acnpsrw")) != -1)
while ((opt = internal_getopt (list, "acd:npsrw")) != -1)
{
switch (opt)
{
@ -112,6 +116,10 @@ history_builtin (list)
case 's':
flags |= SFLAG;
break;
case 'd':
flags |= DFLAG;
delete_arg = list_optarg;
break;
case 'p':
#if defined (BANG_HISTORY)
flags |= PFLAG;
@ -153,6 +161,26 @@ history_builtin (list)
return (EXECUTION_SUCCESS);
}
#endif
else if (flags & DFLAG)
{
if (legal_number (delete_arg, &delete_offset) == 0)
{
builtin_error ("%s: not a valid history position", delete_arg);
return (EXECUTION_FAILURE);
}
opt = delete_offset;
if (opt < history_base || opt < 0 || opt > (history_base + history_length))
{
builtin_error ("%d: not a valid history position", opt);
return (EXECUTION_FAILURE);
}
result = delete_histent (opt - history_base);
/* Since remove_history changes history_length, this can happen if
we delete the last history entry. */
if (where_history () > history_length)
history_set_pos (history_length);
return (result ? EXECUTION_SUCCESS : EXECUTION_FAILURE);
}
else if ((flags & (AFLAG|RFLAG|NFLAG|WFLAG|CFLAG)) == 0)
{
display_history (list);
@ -224,11 +252,28 @@ display_history (list)
}
}
/* Delete and free the history list entry at offset I. */
static int
delete_histent (i)
int i;
{
HIST_ENTRY *discard;
discard = remove_history (i);
if (discard)
{
if (discard->line)
free (discard->line);
free ((char *) discard);
}
return 1;
}
static int
delete_last_history ()
{
register int i;
HIST_ENTRY **hlist, *histent, *discard;
HIST_ENTRY **hlist, *histent;
hlist = history_list ();
if (hlist == NULL)
@ -243,14 +288,7 @@ delete_last_history ()
if (histent == NULL)
return 0;
discard = remove_history (i);
if (discard)
{
if (discard->line)
free (discard->line);
free ((char *) discard);
}
return (1);
return (delete_histent (i));
}
/* Remove the last entry in the history list and add each argument in