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[src/trunk]: src/lib/libedit more compatible with readline history functions.
details: https://anonhg.NetBSD.org/src/rev/60f86780bded
branches: trunk
changeset: 347402:60f86780bded
user: christos <christos%NetBSD.org@localhost>
date: Wed Aug 24 13:10:59 2016 +0000
description:
more compatible with readline history functions.
diffstat:
lib/libedit/readline.c | 151 ++++++++++++++++++---------------------
lib/libedit/readline/readline.h | 3 +-
2 files changed, 72 insertions(+), 82 deletions(-)
diffs (truncated from 312 to 300 lines):
diff -r e8144dc0bc94 -r 60f86780bded lib/libedit/readline.c
--- a/lib/libedit/readline.c Wed Aug 24 10:27:23 2016 +0000
+++ b/lib/libedit/readline.c Wed Aug 24 13:10:59 2016 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: readline.c,v 1.136 2016/06/02 21:40:51 christos Exp $ */
+/* $NetBSD: readline.c,v 1.137 2016/08/24 13:10:59 christos Exp $ */
/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
@@ -31,7 +31,7 @@
#include "config.h"
#if !defined(lint) && !defined(SCCSID)
-__RCSID("$NetBSD: readline.c,v 1.136 2016/06/02 21:40:51 christos Exp $");
+__RCSID("$NetBSD: readline.c,v 1.137 2016/08/24 13:10:59 christos Exp $");
#endif /* not lint && not SCCSID */
#include <sys/types.h>
@@ -95,6 +95,7 @@
int history_base = 1; /* probably never subject to change */
int history_length = 0;
+int history_offset = 0;
int max_input_history = 0;
char history_expansion_char = '!';
char history_subst_char = '^';
@@ -156,14 +157,6 @@
*/
int rl_completion_append_character = ' ';
-/*
- * When the history cursor is on the newest element and next_history()
- * is called, GNU readline moves the cursor beyond the newest element.
- * The editline library does not provide data structures to express
- * that state, so we need a local flag.
- */
-static int current_history_valid = 1;
-
/* stuff below is used internally by libedit for readline emulation */
static History *h = NULL;
@@ -176,7 +169,6 @@
static unsigned char _el_rl_tstp(EditLine *, int);
static char *_get_prompt(EditLine *);
static int _getc_function(EditLine *, wchar_t *);
-static HIST_ENTRY *_move_history(int);
static int _history_expand_command(const char *, size_t, size_t,
char **);
static char *_rl_compat_sub(const char *, const char *,
@@ -184,6 +176,7 @@
static int _rl_event_read_char(EditLine *, wchar_t *);
static void _rl_update_pos(void);
+static HIST_ENTRY rl_he;
/* ARGSUSED */
static char *
@@ -195,25 +188,6 @@
/*
- * generic function for moving around history
- */
-static HIST_ENTRY *
-_move_history(int op)
-{
- HistEvent ev;
- static HIST_ENTRY rl_he;
-
- if (history(h, &ev, op) != 0)
- return NULL;
-
- rl_he.line = ev.str;
- rl_he.data = NULL;
-
- return &rl_he;
-}
-
-
-/*
* read one key from user defined input function
*/
static int
@@ -299,8 +273,6 @@
int editmode = 1;
struct termios t;
- current_history_valid = 1;
-
if (e != NULL)
el_end(e);
if (h != NULL)
@@ -399,7 +371,7 @@
el_set(e, EL_BIND, "\\e[1;5C", "em-next-word", NULL);
el_set(e, EL_BIND, "\\e[1;5D", "ed-prev-word", NULL);
el_set(e, EL_BIND, "\\e[5C", "em-next-word", NULL);
- el_set(e, EL_BIND, "\\e[5D", "ed-prev-word", NULL);
+ el_set(e, EL_BIND, "\\e[5D", "ed-erev-word", NULL);
el_set(e, EL_BIND, "\\e\\e[C", "em-next-word", NULL);
el_set(e, EL_BIND, "\\e\\e[D", "ed-prev-word", NULL);
@@ -494,6 +466,7 @@
{
if (h == NULL || e == NULL)
rl_initialize();
+ history_offset = history_length;
}
@@ -575,7 +548,7 @@
}
if ('0' <= cmd[idx] && cmd[idx] <= '9') {
- HIST_ENTRY *rl_he;
+ HIST_ENTRY *he;
num = 0;
while (cmd[idx] && '0' <= cmd[idx] && cmd[idx] <= '9') {
@@ -585,11 +558,11 @@
if (sign)
num = history_length - num + 1;
- if (!(rl_he = history_get(num)))
+ if (!(he = history_get(num)))
return NULL;
*cindex = idx;
- return rl_he->line;
+ return he->line;
}
sub = 0;
if (cmd[idx] == '?') {
@@ -1461,7 +1434,6 @@
history_base++;
else
history_length = ev.num;
- current_history_valid = 1;
return 0;
}
@@ -1552,8 +1524,7 @@
rl_initialize();
(void)history(h, &ev, H_CLEAR);
- history_length = 0;
- current_history_valid = 1;
+ history_offset = history_length = 0;
}
@@ -1563,24 +1534,42 @@
int
where_history(void)
{
- HistEvent ev;
- int curr_num, off;
-
- if (history(h, &ev, H_CURR) != 0)
- return 0;
- curr_num = ev.num;
-
- /* start from the oldest */
- (void)history(h, &ev, H_LAST);
-
- /* position is zero-based */
- off = 0;
- while (ev.num != curr_num && history(h, &ev, H_PREV) == 0)
- off++;
-
- return off;
+ return history_offset;
}
+static HIST_ENTRY **_history_listp;
+static HIST_ENTRY *_history_list;
+
+HIST_ENTRY **
+history_list(void)
+{
+ HistEvent ev;
+ HIST_ENTRY **nlp, *nl;
+ int i;
+
+ if (history(h, &ev, H_LAST) != 0)
+ return NULL;
+
+ if ((nlp = el_realloc(_history_listp,
+ (size_t)history_length * sizeof(*nlp))) == NULL)
+ return NULL;
+ _history_listp = nlp;
+
+ if ((nl = el_realloc(_history_list,
+ (size_t)history_length * sizeof(*nl))) == NULL)
+ return NULL;
+ _history_list = nl;
+
+ i = 0;
+ do {
+ _history_listp[i] = &_history_list[i];
+ _history_list[i].line = ev.str;
+ _history_list[i].data = NULL;
+ if (i++ == history_length)
+ abort();
+ } while (history(h, &ev, H_PREV) == 0);
+ return _history_listp;
+}
/*
* returns current history event or NULL if there is no such event
@@ -1588,8 +1577,14 @@
HIST_ENTRY *
current_history(void)
{
+ HistEvent ev;
- return current_history_valid ? _move_history(H_CURR) : NULL;
+ if (history(h, &ev, H_PREV_EVENT, history_offset + 1) != 0)
+ return NULL;
+
+ rl_he.line = ev.str;
+ rl_he.data = NULL;
+ return &rl_he;
}
@@ -1626,24 +1621,10 @@
int
history_set_pos(int pos)
{
- HistEvent ev;
- int curr_num;
-
if (pos >= history_length || pos < 0)
return 0;
- (void)history(h, &ev, H_CURR);
- curr_num = ev.num;
- current_history_valid = 1;
-
- /*
- * use H_DELDATA to set to nth history (without delete) by passing
- * (void **)-1
- */
- if (history(h, &ev, H_DELDATA, pos, (void **)-1)) {
- (void)history(h, &ev, H_SET, curr_num);
- return 0;
- }
+ history_offset = pos;
return 1;
}
@@ -1655,12 +1636,16 @@
HIST_ENTRY *
previous_history(void)
{
+ HistEvent ev;
- if (current_history_valid == 0) {
- current_history_valid = 1;
- return _move_history(H_CURR);
- }
- return _move_history(H_NEXT);
+ if (history_offset == 0)
+ return NULL;
+
+ if (history(h, &ev, H_LAST) != 0)
+ return NULL;
+
+ history_offset--;
+ return current_history();
}
@@ -1670,12 +1655,16 @@
HIST_ENTRY *
next_history(void)
{
- HIST_ENTRY *he;
+ HistEvent ev;
+
+ if (history_offset >= history_length)
+ return NULL;
- he = _move_history(H_PREV);
- if (he == NULL)
- current_history_valid = 0;
- return he;
+ if (history(h, &ev, H_LAST) != 0)
+ return NULL;
+
+ history_offset++;
+ return current_history();
}
diff -r e8144dc0bc94 -r 60f86780bded lib/libedit/readline/readline.h
--- a/lib/libedit/readline/readline.h Wed Aug 24 10:27:23 2016 +0000
+++ b/lib/libedit/readline/readline.h Wed Aug 24 13:10:59 2016 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: readline.h,v 1.39 2016/02/17 19:47:49 christos Exp $ */
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