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ruanhaishen
redis
Commits
429aff4e
Commit
429aff4e
authored
Mar 13, 2014
by
antirez
Browse files
Linenoise updated, multiline mode enabled in redis-cli.
parent
cc11d103
Changes
3
Show whitespace changes
Inline
Side-by-side
deps/linenoise/linenoise.c
View file @
429aff4e
...
...
@@ -10,8 +10,8 @@
*
* ------------------------------------------------------------------------
*
* Copyright (c) 2010, Salvatore Sanfilippo <antirez at gmail dot com>
* Copyright (c) 2010, Pieter Noordhuis <pcnoordhuis at gmail dot com>
* Copyright (c) 2010
-2013
, Salvatore Sanfilippo <antirez at gmail dot com>
* Copyright (c) 2010
-2013
, Pieter Noordhuis <pcnoordhuis at gmail dot com>
*
* All rights reserved.
*
...
...
@@ -45,12 +45,10 @@
* - http://www.3waylabs.com/nw/WWW/products/wizcon/vt220.html
*
* Todo list:
* - Switch to gets() if $TERM is something we can't support.
* - Filter bogus Ctrl+<char> combinations.
* - Win32 support
*
* Bloat:
* - Completion?
* - History search like Ctrl+r in readline?
*
* List of escape sequences used by this program, we do everything just
...
...
@@ -72,6 +70,17 @@
* Sequence: ESC [ n C
* Effect: moves cursor forward of n chars
*
* When multi line mode is enabled, we also use an additional escape
* sequence. However multi line editing is disabled by default.
*
* CUU (Cursor Up)
* Sequence: ESC [ n A
* Effect: moves cursor up of n chars.
*
* CUD (Cursor Down)
* Sequence: ESC [ n B
* Effect: moves cursor down of n chars.
*
* The following are used to clear the screen: ESC [ H ESC [ 2 J
* This is actually composed of two sequences:
*
...
...
@@ -92,6 +101,7 @@
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <unistd.h>
...
...
@@ -99,19 +109,89 @@
#define LINENOISE_DEFAULT_HISTORY_MAX_LEN 100
#define LINENOISE_MAX_LINE 4096
static
char
*
unsupported_term
[]
=
{
"dumb"
,
"cons25"
,
NULL
};
static
char
*
unsupported_term
[]
=
{
"dumb"
,
"cons25"
,
"emacs"
,
NULL
};
static
linenoiseCompletionCallback
*
completionCallback
=
NULL
;
static
struct
termios
orig_termios
;
/* in order to restore at exit */
static
int
rawmode
=
0
;
/* for atexit() function to check if restore is needed*/
static
int
atexit_registered
=
0
;
/* register atexit just 1 time */
static
struct
termios
orig_termios
;
/* In order to restore at exit.*/
static
int
rawmode
=
0
;
/* For atexit() function to check if restore is needed*/
static
int
mlmode
=
0
;
/* Multi line mode. Default is single line. */
static
int
atexit_registered
=
0
;
/* Register atexit just 1 time. */
static
int
history_max_len
=
LINENOISE_DEFAULT_HISTORY_MAX_LEN
;
static
int
history_len
=
0
;
char
**
history
=
NULL
;
static
char
**
history
=
NULL
;
/* The linenoiseState structure represents the state during line editing.
* We pass this state to functions implementing specific editing
* functionalities. */
struct
linenoiseState
{
int
ifd
;
/* Terminal stdin file descriptor. */
int
ofd
;
/* Terminal stdout file descriptor. */
char
*
buf
;
/* Edited line buffer. */
size_t
buflen
;
/* Edited line buffer size. */
const
char
*
prompt
;
/* Prompt to display. */
size_t
plen
;
/* Prompt length. */
size_t
pos
;
/* Current cursor position. */
size_t
oldpos
;
/* Previous refresh cursor position. */
size_t
len
;
/* Current edited line length. */
size_t
cols
;
/* Number of columns in terminal. */
size_t
maxrows
;
/* Maximum num of rows used so far (multiline mode) */
int
history_index
;
/* The history index we are currently editing. */
};
enum
KEY_ACTION
{
KEY_NULL
=
0
,
/* NULL */
CTRL_A
=
1
,
/* Ctrl+a */
CTRL_B
=
2
,
/* Ctrl-b */
CTRL_C
=
3
,
/* Ctrl-c */
CTRL_D
=
4
,
/* Ctrl-d */
CTRL_E
=
5
,
/* Ctrl-e */
CTRL_F
=
6
,
/* Ctrl-f */
CTRL_H
=
8
,
/* Ctrl-h */
TAB
=
9
,
/* Tab */
CTRL_K
=
11
,
/* Ctrl+k */
CTRL_L
=
12
,
/* Ctrl+l */
ENTER
=
13
,
/* Enter */
CTRL_N
=
14
,
/* Ctrl-n */
CTRL_P
=
16
,
/* Ctrl-p */
CTRL_T
=
20
,
/* Ctrl-t */
CTRL_U
=
21
,
/* Ctrl+u */
CTRL_W
=
23
,
/* Ctrl+w */
ESC
=
27
,
/* Escape */
BACKSPACE
=
127
/* Backspace */
};
static
void
linenoiseAtExit
(
void
);
int
linenoiseHistoryAdd
(
const
char
*
line
);
static
void
refreshLine
(
struct
linenoiseState
*
l
);
/* Debugging macro. */
#if 0
FILE *lndebug_fp = NULL;
#define lndebug(...) \
do { \
if (lndebug_fp == NULL) { \
lndebug_fp = fopen("/tmp/lndebug.txt","a"); \
fprintf(lndebug_fp, \
"[%d %d %d] p: %d, rows: %d, rpos: %d, max: %d, oldmax: %d\n", \
(int)l->len,(int)l->pos,(int)l->oldpos,plen,rows,rpos, \
(int)l->maxrows,old_rows); \
} \
fprintf(lndebug_fp, ", " __VA_ARGS__); \
fflush(lndebug_fp); \
} while (0)
#else
#define lndebug(fmt, ...)
#endif
/* ======================= Low level terminal handling ====================== */
/* Set if to use or not the multi line mode. */
void
linenoiseSetMultiLine
(
int
ml
)
{
mlmode
=
ml
;
}
/* Return true if the terminal name is in the list of terminals we know are
* not able to understand basic escape sequences. */
static
int
isUnsupportedTerm
(
void
)
{
char
*
term
=
getenv
(
"TERM"
);
int
j
;
...
...
@@ -122,16 +202,7 @@ static int isUnsupportedTerm(void) {
return
0
;
}
static
void
freeHistory
(
void
)
{
if
(
history
)
{
int
j
;
for
(
j
=
0
;
j
<
history_len
;
j
++
)
free
(
history
[
j
]);
free
(
history
);
}
}
/* Raw mode: 1960 magic shit. */
static
int
enableRawMode
(
int
fd
)
{
struct
termios
raw
;
...
...
@@ -173,51 +244,83 @@ static void disableRawMode(int fd) {
rawmode
=
0
;
}
/* At exit we'll try to fix the terminal to the initial conditions. */
static
void
linenoiseAtExit
(
void
)
{
disableRawMode
(
STDIN_FILENO
);
freeHistory
();
/* Use the ESC [6n escape sequence to query the horizontal cursor position
* and return it. On error -1 is returned, on success the position of the
* cursor. */
static
int
getCursorPosition
(
int
ifd
,
int
ofd
)
{
char
buf
[
32
];
int
cols
,
rows
;
unsigned
int
i
=
0
;
/* Report cursor location */
if
(
write
(
ofd
,
"
\x1b
[6n"
,
4
)
!=
4
)
return
-
1
;
/* Read the response: ESC [ rows ; cols R */
while
(
i
<
sizeof
(
buf
)
-
1
)
{
if
(
read
(
ifd
,
buf
+
i
,
1
)
!=
1
)
break
;
if
(
buf
[
i
]
==
'R'
)
break
;
i
++
;
}
buf
[
i
]
=
'\0'
;
/* Parse it. */
if
(
buf
[
0
]
!=
ESC
||
buf
[
1
]
!=
'['
)
return
-
1
;
if
(
sscanf
(
buf
+
2
,
"%d;%d"
,
&
rows
,
&
cols
)
!=
2
)
return
-
1
;
return
cols
;
}
static
int
getColumns
(
void
)
{
/* Try to get the number of columns in the current terminal, or assume 80
* if it fails. */
static
int
getColumns
(
int
ifd
,
int
ofd
)
{
struct
winsize
ws
;
if
(
ioctl
(
1
,
TIOCGWINSZ
,
&
ws
)
==
-
1
)
return
80
;
return
ws
.
ws_col
;
}
if
(
ioctl
(
1
,
TIOCGWINSZ
,
&
ws
)
==
-
1
||
ws
.
ws_col
==
0
)
{
/* ioctl() failed. Try to query the terminal itself. */
int
start
,
cols
;
static
void
refreshLine
(
int
fd
,
const
char
*
prompt
,
char
*
buf
,
size_t
len
,
size_t
pos
,
size_t
cols
)
{
char
seq
[
64
]
;
size_t
plen
=
strlen
(
prompt
)
;
/* Get the initial position so we can restore it later. */
start
=
getCursorPosition
(
ifd
,
ofd
)
;
if
(
start
==
-
1
)
goto
failed
;
while
((
plen
+
pos
)
>=
cols
)
{
buf
++
;
len
--
;
pos
--
;
/* Go to right margin and get position. */
if
(
write
(
ofd
,
"
\x1b
[999C"
,
6
)
!=
6
)
goto
failed
;
cols
=
getCursorPosition
(
ifd
,
ofd
);
if
(
cols
==
-
1
)
goto
failed
;
/* Restore position. */
if
(
cols
>
start
)
{
char
seq
[
32
];
snprintf
(
seq
,
32
,
"
\x1b
[%dD"
,
cols
-
start
);
if
(
write
(
ofd
,
seq
,
strlen
(
seq
))
==
-
1
)
{
/* Can't recover... */
}
while
(
plen
+
len
>
cols
)
{
len
--
;
}
return
cols
;
}
else
{
return
ws
.
ws_col
;
}
/* Cursor to left edge */
snprintf
(
seq
,
64
,
"
\x1b
[0G"
);
if
(
write
(
fd
,
seq
,
strlen
(
seq
))
==
-
1
)
return
;
/* Write the prompt and the current buffer content */
if
(
write
(
fd
,
prompt
,
strlen
(
prompt
))
==
-
1
)
return
;
if
(
write
(
fd
,
buf
,
len
)
==
-
1
)
return
;
/* Erase to right */
snprintf
(
seq
,
64
,
"
\x1b
[0K"
);
if
(
write
(
fd
,
seq
,
strlen
(
seq
))
==
-
1
)
return
;
/* Move cursor to original position. */
snprintf
(
seq
,
64
,
"
\x1b
[0G
\x1b
[%dC"
,
(
int
)(
pos
+
plen
));
if
(
write
(
fd
,
seq
,
strlen
(
seq
))
==
-
1
)
return
;
failed:
return
80
;
}
static
void
beep
()
{
/* Clear the screen. Used to handle ctrl+l */
void
linenoiseClearScreen
(
void
)
{
if
(
write
(
STDOUT_FILENO
,
"
\x1b
[H
\x1b
[2J"
,
7
)
<=
0
)
{
/* nothing to do, just to avoid warning. */
}
}
/* Beep, used for completion when there is nothing to complete or when all
* the choices were already shown. */
static
void
linenoiseBeep
(
void
)
{
fprintf
(
stderr
,
"\x7"
);
fflush
(
stderr
);
}
/* ============================== Completion ================================ */
/* Free a list of completion option populated by linenoiseAddCompletion(). */
static
void
freeCompletions
(
linenoiseCompletions
*
lc
)
{
size_t
i
;
for
(
i
=
0
;
i
<
lc
->
len
;
i
++
)
...
...
@@ -226,28 +329,39 @@ static void freeCompletions(linenoiseCompletions *lc) {
free
(
lc
->
cvec
);
}
static
int
completeLine
(
int
fd
,
const
char
*
prompt
,
char
*
buf
,
size_t
buflen
,
size_t
*
len
,
size_t
*
pos
,
size_t
cols
)
{
/* This is an helper function for linenoiseEdit() and is called when the
* user types the <tab> key in order to complete the string currently in the
* input.
*
* The state of the editing is encapsulated into the pointed linenoiseState
* structure as described in the structure definition. */
static
int
completeLine
(
struct
linenoiseState
*
ls
)
{
linenoiseCompletions
lc
=
{
0
,
NULL
};
int
nread
,
nwritten
;
char
c
=
0
;
completionCallback
(
buf
,
&
lc
);
completionCallback
(
ls
->
buf
,
&
lc
);
if
(
lc
.
len
==
0
)
{
b
eep
();
linenoiseB
eep
();
}
else
{
size_t
stop
=
0
,
i
=
0
;
size_t
clen
;
while
(
!
stop
)
{
/* Show completion or original buffer */
if
(
i
<
lc
.
len
)
{
clen
=
strlen
(
lc
.
cvec
[
i
]);
refreshLine
(
fd
,
prompt
,
lc
.
cvec
[
i
],
clen
,
clen
,
cols
);
struct
linenoiseState
saved
=
*
ls
;
ls
->
len
=
ls
->
pos
=
strlen
(
lc
.
cvec
[
i
]);
ls
->
buf
=
lc
.
cvec
[
i
];
refreshLine
(
ls
);
ls
->
len
=
saved
.
len
;
ls
->
pos
=
saved
.
pos
;
ls
->
buf
=
saved
.
buf
;
}
else
{
refreshLine
(
fd
,
prompt
,
buf
,
*
len
,
*
pos
,
co
ls
);
refreshLine
(
ls
);
}
nread
=
read
(
fd
,
&
c
,
1
);
nread
=
read
(
ls
->
i
fd
,
&
c
,
1
);
if
(
nread
<=
0
)
{
freeCompletions
(
&
lc
);
return
-
1
;
...
...
@@ -256,20 +370,18 @@ static int completeLine(int fd, const char *prompt, char *buf, size_t buflen, si
switch
(
c
)
{
case
9
:
/* tab */
i
=
(
i
+
1
)
%
(
lc
.
len
+
1
);
if
(
i
==
lc
.
len
)
b
eep
();
if
(
i
==
lc
.
len
)
linenoiseB
eep
();
break
;
case
27
:
/* escape */
/* Re-show original buffer */
if
(
i
<
lc
.
len
)
{
refreshLine
(
fd
,
prompt
,
buf
,
*
len
,
*
pos
,
cols
);
}
if
(
i
<
lc
.
len
)
refreshLine
(
ls
);
stop
=
1
;
break
;
default:
/* Update buffer and return */
if
(
i
<
lc
.
len
)
{
nwritten
=
snprintf
(
buf
,
buflen
,
"%s"
,
lc
.
cvec
[
i
]);
*
len
=
*
pos
=
nwritten
;
nwritten
=
snprintf
(
ls
->
buf
,
ls
->
buflen
,
"%s"
,
lc
.
cvec
[
i
]);
ls
->
len
=
ls
->
pos
=
nwritten
;
}
stop
=
1
;
break
;
...
...
@@ -281,214 +393,526 @@ static int completeLine(int fd, const char *prompt, char *buf, size_t buflen, si
return
c
;
/* Return last read character */
}
void
linenoiseClearScreen
(
void
)
{
if
(
write
(
STDIN_FILENO
,
"
\x1b
[H
\x1b
[2J"
,
7
)
<=
0
)
{
/* nothing to do, just to avoid warning. */
/* Register a callback function to be called for tab-completion. */
void
linenoiseSetCompletionCallback
(
linenoiseCompletionCallback
*
fn
)
{
completionCallback
=
fn
;
}
/* This function is used by the callback function registered by the user
* in order to add completion options given the input string when the
* user typed <tab>. See the example.c source code for a very easy to
* understand example. */
void
linenoiseAddCompletion
(
linenoiseCompletions
*
lc
,
const
char
*
str
)
{
size_t
len
=
strlen
(
str
);
char
*
copy
,
**
cvec
;
copy
=
malloc
(
len
+
1
);
if
(
copy
==
NULL
)
return
;
memcpy
(
copy
,
str
,
len
+
1
);
cvec
=
realloc
(
lc
->
cvec
,
sizeof
(
char
*
)
*
(
lc
->
len
+
1
));
if
(
cvec
==
NULL
)
{
free
(
copy
);
return
;
}
lc
->
cvec
=
cvec
;
lc
->
cvec
[
lc
->
len
++
]
=
copy
;
}
/* =========================== Line editing ================================= */
/* We define a very simple "append buffer" structure, that is an heap
* allocated string where we can append to. This is useful in order to
* write all the escape sequences in a buffer and flush them to the standard
* output in a single call, to avoid flickering effects. */
struct
abuf
{
char
*
b
;
int
len
;
};
static
void
abInit
(
struct
abuf
*
ab
)
{
ab
->
b
=
NULL
;
ab
->
len
=
0
;
}
static
void
abAppend
(
struct
abuf
*
ab
,
const
char
*
s
,
int
len
)
{
char
*
new
=
realloc
(
ab
->
b
,
ab
->
len
+
len
);
if
(
new
==
NULL
)
return
;
memcpy
(
new
+
ab
->
len
,
s
,
len
);
ab
->
b
=
new
;
ab
->
len
+=
len
;
}
static
void
abFree
(
struct
abuf
*
ab
)
{
free
(
ab
->
b
);
}
static
int
linenoisePrompt
(
int
fd
,
char
*
buf
,
size_t
buflen
,
const
char
*
prompt
)
{
size_t
plen
=
strlen
(
prompt
);
size_t
pos
=
0
;
size_t
len
=
0
;
size_t
cols
=
getColumns
();
int
history_index
=
0
;
size_t
old_pos
;
/* Single line low level line refresh.
*
* Rewrite the currently edited line accordingly to the buffer content,
* cursor position, and number of columns of the terminal. */
static
void
refreshSingleLine
(
struct
linenoiseState
*
l
)
{
char
seq
[
64
];
size_t
plen
=
strlen
(
l
->
prompt
);
int
fd
=
l
->
ofd
;
char
*
buf
=
l
->
buf
;
size_t
len
=
l
->
len
;
size_t
pos
=
l
->
pos
;
struct
abuf
ab
;
while
((
plen
+
pos
)
>=
l
->
cols
)
{
buf
++
;
len
--
;
pos
--
;
}
while
(
plen
+
len
>
l
->
cols
)
{
len
--
;
}
abInit
(
&
ab
);
/* Cursor to left edge */
snprintf
(
seq
,
64
,
"
\x1b
[0G"
);
abAppend
(
&
ab
,
seq
,
strlen
(
seq
));
/* Write the prompt and the current buffer content */
abAppend
(
&
ab
,
l
->
prompt
,
strlen
(
l
->
prompt
));
abAppend
(
&
ab
,
buf
,
len
);
/* Erase to right */
snprintf
(
seq
,
64
,
"
\x1b
[0K"
);
abAppend
(
&
ab
,
seq
,
strlen
(
seq
));
/* Move cursor to original position. */
snprintf
(
seq
,
64
,
"
\x1b
[0G
\x1b
[%dC"
,
(
int
)(
pos
+
plen
));
abAppend
(
&
ab
,
seq
,
strlen
(
seq
));
if
(
write
(
fd
,
ab
.
b
,
ab
.
len
)
==
-
1
)
{}
/* Can't recover from write error. */
abFree
(
&
ab
);
}
/* Multi line low level line refresh.
*
* Rewrite the currently edited line accordingly to the buffer content,
* cursor position, and number of columns of the terminal. */
static
void
refreshMultiLine
(
struct
linenoiseState
*
l
)
{
char
seq
[
64
];
int
plen
=
strlen
(
l
->
prompt
);
int
rows
=
(
plen
+
l
->
len
+
l
->
cols
-
1
)
/
l
->
cols
;
/* rows used by current buf. */
int
rpos
=
(
plen
+
l
->
oldpos
+
l
->
cols
)
/
l
->
cols
;
/* cursor relative row. */
int
rpos2
;
/* rpos after refresh. */
int
old_rows
=
l
->
maxrows
;
int
fd
=
l
->
ofd
,
j
;
struct
abuf
ab
;
/* Update maxrows if needed. */
if
(
rows
>
(
int
)
l
->
maxrows
)
l
->
maxrows
=
rows
;
/* First step: clear all the lines used before. To do so start by
* going to the last row. */
abInit
(
&
ab
);
if
(
old_rows
-
rpos
>
0
)
{
lndebug
(
"go down %d"
,
old_rows
-
rpos
);
snprintf
(
seq
,
64
,
"
\x1b
[%dB"
,
old_rows
-
rpos
);
abAppend
(
&
ab
,
seq
,
strlen
(
seq
));
}
/* Now for every row clear it, go up. */
for
(
j
=
0
;
j
<
old_rows
-
1
;
j
++
)
{
lndebug
(
"clear+up"
);
snprintf
(
seq
,
64
,
"
\x1b
[0G
\x1b
[0K
\x1b
[1A"
);
abAppend
(
&
ab
,
seq
,
strlen
(
seq
));
}
/* Clean the top line. */
lndebug
(
"clear"
);
snprintf
(
seq
,
64
,
"
\x1b
[0G
\x1b
[0K"
);
abAppend
(
&
ab
,
seq
,
strlen
(
seq
));
/* Write the prompt and the current buffer content */
abAppend
(
&
ab
,
l
->
prompt
,
strlen
(
l
->
prompt
));
abAppend
(
&
ab
,
l
->
buf
,
l
->
len
);
/* If we are at the very end of the screen with our prompt, we need to
* emit a newline and move the prompt to the first column. */
if
(
l
->
pos
&&
l
->
pos
==
l
->
len
&&
(
l
->
pos
+
plen
)
%
l
->
cols
==
0
)
{
lndebug
(
"<newline>"
);
abAppend
(
&
ab
,
"
\n
"
,
1
);
snprintf
(
seq
,
64
,
"
\x1b
[0G"
);
abAppend
(
&
ab
,
seq
,
strlen
(
seq
));
rows
++
;
if
(
rows
>
(
int
)
l
->
maxrows
)
l
->
maxrows
=
rows
;
}
/* Move cursor to right position. */
rpos2
=
(
plen
+
l
->
pos
+
l
->
cols
)
/
l
->
cols
;
/* current cursor relative row. */
lndebug
(
"rpos2 %d"
,
rpos2
);
/* Go up till we reach the expected positon. */
if
(
rows
-
rpos2
>
0
)
{
lndebug
(
"go-up %d"
,
rows
-
rpos2
);
snprintf
(
seq
,
64
,
"
\x1b
[%dA"
,
rows
-
rpos2
);
abAppend
(
&
ab
,
seq
,
strlen
(
seq
));
}
/* Set column. */
lndebug
(
"set col %d"
,
1
+
((
plen
+
(
int
)
l
->
pos
)
%
(
int
)
l
->
cols
));
snprintf
(
seq
,
64
,
"
\x1b
[%dG"
,
1
+
((
plen
+
(
int
)
l
->
pos
)
%
(
int
)
l
->
cols
));
abAppend
(
&
ab
,
seq
,
strlen
(
seq
));
lndebug
(
"
\n
"
);
l
->
oldpos
=
l
->
pos
;
if
(
write
(
fd
,
ab
.
b
,
ab
.
len
)
==
-
1
)
{}
/* Can't recover from write error. */
abFree
(
&
ab
);
}
/* Calls the two low level functions refreshSingleLine() or
* refreshMultiLine() according to the selected mode. */
static
void
refreshLine
(
struct
linenoiseState
*
l
)
{
if
(
mlmode
)
refreshMultiLine
(
l
);
else
refreshSingleLine
(
l
);
}
/* Insert the character 'c' at cursor current position.
*
* On error writing to the terminal -1 is returned, otherwise 0. */
int
linenoiseEditInsert
(
struct
linenoiseState
*
l
,
char
c
)
{
if
(
l
->
len
<
l
->
buflen
)
{
if
(
l
->
len
==
l
->
pos
)
{
l
->
buf
[
l
->
pos
]
=
c
;
l
->
pos
++
;
l
->
len
++
;
l
->
buf
[
l
->
len
]
=
'\0'
;
if
((
!
mlmode
&&
l
->
plen
+
l
->
len
<
l
->
cols
)
/* || mlmode */
)
{
/* Avoid a full update of the line in the
* trivial case. */
if
(
write
(
l
->
ofd
,
&
c
,
1
)
==
-
1
)
return
-
1
;
}
else
{
refreshLine
(
l
);
}
}
else
{
memmove
(
l
->
buf
+
l
->
pos
+
1
,
l
->
buf
+
l
->
pos
,
l
->
len
-
l
->
pos
);
l
->
buf
[
l
->
pos
]
=
c
;
l
->
len
++
;
l
->
pos
++
;
l
->
buf
[
l
->
len
]
=
'\0'
;
refreshLine
(
l
);
}
}
return
0
;
}
/* Move cursor on the left. */
void
linenoiseEditMoveLeft
(
struct
linenoiseState
*
l
)
{
if
(
l
->
pos
>
0
)
{
l
->
pos
--
;
refreshLine
(
l
);
}
}
/* Move cursor on the right. */
void
linenoiseEditMoveRight
(
struct
linenoiseState
*
l
)
{
if
(
l
->
pos
!=
l
->
len
)
{
l
->
pos
++
;
refreshLine
(
l
);
}
}
/* Move cursor to the start of the line. */
void
linenoiseEditMoveHome
(
struct
linenoiseState
*
l
)
{
if
(
l
->
pos
!=
0
)
{
l
->
pos
=
0
;
refreshLine
(
l
);
}
}
/* Move cursor to the end of the line. */
void
linenoiseEditMoveEnd
(
struct
linenoiseState
*
l
)
{
if
(
l
->
pos
!=
l
->
len
)
{
l
->
pos
=
l
->
len
;
refreshLine
(
l
);
}
}
/* Substitute the currently edited line with the next or previous history
* entry as specified by 'dir'. */
#define LINENOISE_HISTORY_NEXT 0
#define LINENOISE_HISTORY_PREV 1
void
linenoiseEditHistoryNext
(
struct
linenoiseState
*
l
,
int
dir
)
{
if
(
history_len
>
1
)
{
/* Update the current history entry before to
* overwrite it with the next one. */
free
(
history
[
history_len
-
1
-
l
->
history_index
]);
history
[
history_len
-
1
-
l
->
history_index
]
=
strdup
(
l
->
buf
);
/* Show the new entry */
l
->
history_index
+=
(
dir
==
LINENOISE_HISTORY_PREV
)
?
1
:
-
1
;
if
(
l
->
history_index
<
0
)
{
l
->
history_index
=
0
;
return
;
}
else
if
(
l
->
history_index
>=
history_len
)
{
l
->
history_index
=
history_len
-
1
;
return
;
}
strncpy
(
l
->
buf
,
history
[
history_len
-
1
-
l
->
history_index
],
l
->
buflen
);
l
->
buf
[
l
->
buflen
-
1
]
=
'\0'
;
l
->
len
=
l
->
pos
=
strlen
(
l
->
buf
);
refreshLine
(
l
);
}
}
/* Delete the character at the right of the cursor without altering the cursor
* position. Basically this is what happens with the "Delete" keyboard key. */
void
linenoiseEditDelete
(
struct
linenoiseState
*
l
)
{
if
(
l
->
len
>
0
&&
l
->
pos
<
l
->
len
)
{
memmove
(
l
->
buf
+
l
->
pos
,
l
->
buf
+
l
->
pos
+
1
,
l
->
len
-
l
->
pos
-
1
);
l
->
len
--
;
l
->
buf
[
l
->
len
]
=
'\0'
;
refreshLine
(
l
);
}
}
/* Backspace implementation. */
void
linenoiseEditBackspace
(
struct
linenoiseState
*
l
)
{
if
(
l
->
pos
>
0
&&
l
->
len
>
0
)
{
memmove
(
l
->
buf
+
l
->
pos
-
1
,
l
->
buf
+
l
->
pos
,
l
->
len
-
l
->
pos
);
l
->
pos
--
;
l
->
len
--
;
l
->
buf
[
l
->
len
]
=
'\0'
;
refreshLine
(
l
);
}
}
/* Delete the previosu word, maintaining the cursor at the start of the
* current word. */
void
linenoiseEditDeletePrevWord
(
struct
linenoiseState
*
l
)
{
size_t
old_pos
=
l
->
pos
;
size_t
diff
;
buf
[
0
]
=
'\0'
;
buflen
--
;
/* Make sure there is always space for the nulterm */
while
(
l
->
pos
>
0
&&
l
->
buf
[
l
->
pos
-
1
]
==
' '
)
l
->
pos
--
;
while
(
l
->
pos
>
0
&&
l
->
buf
[
l
->
pos
-
1
]
!=
' '
)
l
->
pos
--
;
diff
=
old_pos
-
l
->
pos
;
memmove
(
l
->
buf
+
l
->
pos
,
l
->
buf
+
old_pos
,
l
->
len
-
old_pos
+
1
);
l
->
len
-=
diff
;
refreshLine
(
l
);
}
/* This function is the core of the line editing capability of linenoise.
* It expects 'fd' to be already in "raw mode" so that every key pressed
* will be returned ASAP to read().
*
* The resulting string is put into 'buf' when the user type enter, or
* when ctrl+d is typed.
*
* The function returns the length of the current buffer. */
static
int
linenoiseEdit
(
int
stdin_fd
,
int
stdout_fd
,
char
*
buf
,
size_t
buflen
,
const
char
*
prompt
)
{
struct
linenoiseState
l
;
/* Populate the linenoise state that we pass to functions implementing
* specific editing functionalities. */
l
.
ifd
=
stdin_fd
;
l
.
ofd
=
stdout_fd
;
l
.
buf
=
buf
;
l
.
buflen
=
buflen
;
l
.
prompt
=
prompt
;
l
.
plen
=
strlen
(
prompt
);
l
.
oldpos
=
l
.
pos
=
0
;
l
.
len
=
0
;
l
.
cols
=
getColumns
(
stdin_fd
,
stdout_fd
);
l
.
maxrows
=
0
;
l
.
history_index
=
0
;
/* Buffer starts empty. */
l
.
buf
[
0
]
=
'\0'
;
l
.
buflen
--
;
/* Make sure there is always space for the nulterm */
/* The latest history entry is always our current buffer, that
* initially is just an empty string. */
linenoiseHistoryAdd
(
""
);
if
(
write
(
fd
,
prompt
,
plen
)
==
-
1
)
return
-
1
;
if
(
write
(
l
.
o
fd
,
prompt
,
l
.
plen
)
==
-
1
)
return
-
1
;
while
(
1
)
{
char
c
;
int
nread
;
char
seq
[
2
],
seq2
[
2
];
char
seq
[
3
];
nread
=
read
(
fd
,
&
c
,
1
);
if
(
nread
<=
0
)
return
len
;
nread
=
read
(
l
.
i
fd
,
&
c
,
1
);
if
(
nread
<=
0
)
return
l
.
len
;
/* Only autocomplete when the callback is set. It returns < 0 when
* there was an error reading from fd. Otherwise it will return the
* character that should be handled next. */
if
(
c
==
9
&&
completionCallback
!=
NULL
)
{
c
=
completeLine
(
fd
,
prompt
,
buf
,
buflen
,
&
len
,
&
pos
,
cols
);
c
=
completeLine
(
&
l
);
/* Return on errors */
if
(
c
<
0
)
return
len
;
if
(
c
<
0
)
return
l
.
len
;
/* Read next character when 0 */
if
(
c
==
0
)
continue
;
}
switch
(
c
)
{
case
13
:
/* enter */
case
ENTER
:
/* enter */
history_len
--
;
free
(
history
[
history_len
]);
return
(
int
)
len
;
case
3
:
/* ctrl-c */
return
(
int
)
l
.
len
;
case
CTRL_C
:
/* ctrl-c */
errno
=
EAGAIN
;
return
-
1
;
case
127
:
/* backspace */
case
BACKSPACE
:
/* backspace */
case
8
:
/* ctrl-h */
if
(
pos
>
0
&&
len
>
0
)
{
memmove
(
buf
+
pos
-
1
,
buf
+
pos
,
len
-
pos
);
pos
--
;
len
--
;
buf
[
len
]
=
'\0'
;
refreshLine
(
fd
,
prompt
,
buf
,
len
,
pos
,
cols
);
}
linenoiseEditBackspace
(
&
l
);
break
;
case
4
:
/* ctrl-d, remove char at right of cursor */
if
(
len
>
1
&&
pos
<
(
len
-
1
))
{
memmove
(
buf
+
pos
,
buf
+
pos
+
1
,
len
-
pos
);
len
--
;
buf
[
len
]
=
'\0'
;
refreshLine
(
fd
,
prompt
,
buf
,
len
,
pos
,
cols
);
}
else
if
(
len
==
0
)
{
case
CTRL_D
:
/* ctrl-d, remove char at right of cursor, or of the
line is empty, act as end-of-file. */
if
(
l
.
len
>
0
)
{
linenoiseEditDelete
(
&
l
);
}
else
{
history_len
--
;
free
(
history
[
history_len
]);
return
-
1
;
}
break
;
case
20
:
/* ctrl-t */
if
(
pos
>
0
&&
pos
<
len
)
{
int
aux
=
buf
[
pos
-
1
];
buf
[
pos
-
1
]
=
buf
[
pos
];
buf
[
pos
]
=
aux
;
if
(
pos
!=
len
-
1
)
pos
++
;
refreshLine
(
fd
,
prompt
,
buf
,
len
,
pos
,
cols
);
case
CTRL_T
:
/* ctrl-t
, swaps current character with previous.
*/
if
(
l
.
pos
>
0
&&
l
.
pos
<
l
.
len
)
{
int
aux
=
buf
[
l
.
pos
-
1
];
buf
[
l
.
pos
-
1
]
=
buf
[
l
.
pos
];
buf
[
l
.
pos
]
=
aux
;
if
(
l
.
pos
!=
l
.
len
-
1
)
l
.
pos
++
;
refreshLine
(
&
l
);
}
break
;
case
2
:
/* ctrl-b */
goto
left_arrow
;
case
6
:
/* ctrl-f */
goto
right_arrow
;
case
16
:
/* ctrl-p */
seq
[
1
]
=
65
;
goto
up_down_arrow
;
case
14
:
/* ctrl-n */
seq
[
1
]
=
66
;
goto
up_down_arrow
;
case
CTRL_B
:
/* ctrl-b */
linenoiseEditMoveLeft
(
&
l
);
break
;
case
27
:
/* escape sequence */
if
(
read
(
fd
,
seq
,
2
)
==
-
1
)
break
;
if
(
seq
[
0
]
==
91
&&
seq
[
1
]
==
68
)
{
left_arrow:
/* left arrow */
if
(
pos
>
0
)
{
pos
--
;
refreshLine
(
fd
,
prompt
,
buf
,
len
,
pos
,
cols
);
}
}
else
if
(
seq
[
0
]
==
91
&&
seq
[
1
]
==
67
)
{
right_arrow:
/* right arrow */
if
(
pos
!=
len
)
{
pos
++
;
refreshLine
(
fd
,
prompt
,
buf
,
len
,
pos
,
cols
);
}
}
else
if
(
seq
[
0
]
==
91
&&
(
seq
[
1
]
==
65
||
seq
[
1
]
==
66
))
{
up_down_arrow:
/* up and down arrow: history */
if
(
history_len
>
1
)
{
/* Update the current history entry before to
* overwrite it with tne next one. */
free
(
history
[
history_len
-
1
-
history_index
]);
history
[
history_len
-
1
-
history_index
]
=
strdup
(
buf
);
/* Show the new entry */
history_index
+=
(
seq
[
1
]
==
65
)
?
1
:
-
1
;
if
(
history_index
<
0
)
{
history_index
=
0
;
case
CTRL_F
:
/* ctrl-f */
linenoiseEditMoveRight
(
&
l
);
break
;
}
else
if
(
history_index
>=
history_len
)
{
history_index
=
history_len
-
1
;
case
CTRL_P
:
/* ctrl-p */
linenoiseEditHistoryNext
(
&
l
,
LINENOISE_HISTORY_PREV
);
break
;
case
CTRL_N
:
/* ctrl-n */
linenoiseEditHistoryNext
(
&
l
,
LINENOISE_HISTORY_NEXT
);
break
;
case
ESC
:
/* escape sequence */
/* Read the next two bytes representing the escape sequence.
* Use two calls to handle slow terminals returning the two
* chars at different times. */
if
(
read
(
l
.
ifd
,
seq
,
1
)
==
-
1
)
break
;
if
(
read
(
l
.
ifd
,
seq
+
1
,
1
)
==
-
1
)
break
;
/* ESC [ sequences. */
if
(
seq
[
0
]
==
'['
)
{
if
(
seq
[
1
]
>=
'0'
&&
seq
[
1
]
<=
'9'
)
{
/* Extended escape, read additional byte. */
if
(
read
(
l
.
ifd
,
seq
+
2
,
1
)
==
-
1
)
break
;
if
(
seq
[
2
]
==
'~'
)
{
switch
(
seq
[
1
])
{
case
'3'
:
/* Delete key. */
linenoiseEditDelete
(
&
l
);
break
;
}
strncpy
(
buf
,
history
[
history_len
-
1
-
history_index
],
buflen
);
buf
[
buflen
]
=
'\0'
;
len
=
pos
=
strlen
(
buf
);
refreshLine
(
fd
,
prompt
,
buf
,
len
,
pos
,
cols
);
}
}
else
if
(
seq
[
0
]
==
91
&&
seq
[
1
]
>
48
&&
seq
[
1
]
<
55
)
{
/* extended escape */
if
(
read
(
fd
,
seq2
,
2
)
==
-
1
)
break
;
if
(
seq
[
1
]
==
51
&&
seq2
[
0
]
==
126
)
{
/* delete */
if
(
len
>
0
&&
pos
<
len
)
{
memmove
(
buf
+
pos
,
buf
+
pos
+
1
,
len
-
pos
-
1
);
len
--
;
buf
[
len
]
=
'\0'
;
refreshLine
(
fd
,
prompt
,
buf
,
len
,
pos
,
cols
);
}
}
else
{
switch
(
seq
[
1
])
{
case
'A'
:
/* Up */
linenoiseEditHistoryNext
(
&
l
,
LINENOISE_HISTORY_PREV
);
break
;
case
'B'
:
/* Down */
linenoiseEditHistoryNext
(
&
l
,
LINENOISE_HISTORY_NEXT
);
break
;
case
'C'
:
/* Right */
linenoiseEditMoveRight
(
&
l
);
break
;
case
'D'
:
/* Left */
linenoiseEditMoveLeft
(
&
l
);
break
;
case
'H'
:
/* Home */
linenoiseEditMoveHome
(
&
l
);
break
;
case
'F'
:
/* End*/
linenoiseEditMoveEnd
(
&
l
);
break
;
}
}
}
/* ESC O sequences. */
else
if
(
seq
[
0
]
==
'O'
)
{
switch
(
seq
[
1
])
{
case
'H'
:
/* Home */
linenoiseEditMoveHome
(
&
l
);
break
;
case
'F'
:
/* End*/
linenoiseEditMoveEnd
(
&
l
);
break
;
default:
if
(
len
<
buflen
)
{
if
(
len
==
pos
)
{
buf
[
pos
]
=
c
;
pos
++
;
len
++
;
buf
[
len
]
=
'\0'
;
if
(
plen
+
len
<
cols
)
{
/* Avoid a full update of the line in the
* trivial case. */
if
(
write
(
fd
,
&
c
,
1
)
==
-
1
)
return
-
1
;
}
else
{
refreshLine
(
fd
,
prompt
,
buf
,
len
,
pos
,
cols
);
}
}
else
{
memmove
(
buf
+
pos
+
1
,
buf
+
pos
,
len
-
pos
);
buf
[
pos
]
=
c
;
len
++
;
pos
++
;
buf
[
len
]
=
'\0'
;
refreshLine
(
fd
,
prompt
,
buf
,
len
,
pos
,
cols
);
}
}
break
;
case
21
:
/* Ctrl+u, delete the whole line. */
default:
if
(
linenoiseEditInsert
(
&
l
,
c
))
return
-
1
;
break
;
case
CTRL_U
:
/* Ctrl+u, delete the whole line. */
buf
[
0
]
=
'\0'
;
pos
=
len
=
0
;
refreshLine
(
fd
,
prompt
,
buf
,
len
,
pos
,
cols
);
l
.
pos
=
l
.
len
=
0
;
refreshLine
(
&
l
);
break
;
case
11
:
/* Ctrl+k, delete from current to end of line. */
buf
[
pos
]
=
'\0'
;
len
=
pos
;
refreshLine
(
fd
,
prompt
,
buf
,
len
,
pos
,
cols
);
case
CTRL_K
:
/* Ctrl+k, delete from current to end of line. */
buf
[
l
.
pos
]
=
'\0'
;
l
.
len
=
l
.
pos
;
refreshLine
(
&
l
);
break
;
case
1
:
/* Ctrl+a, go to the start of the line */
pos
=
0
;
refreshLine
(
fd
,
prompt
,
buf
,
len
,
pos
,
cols
);
case
CTRL_A
:
/* Ctrl+a, go to the start of the line */
linenoiseEditMoveHome
(
&
l
);
break
;
case
5
:
/* ctrl+e, go to the end of the line */
pos
=
len
;
refreshLine
(
fd
,
prompt
,
buf
,
len
,
pos
,
cols
);
case
CTRL_E
:
/* ctrl+e, go to the end of the line */
linenoiseEditMoveEnd
(
&
l
);
break
;
case
12
:
/* ctrl+l, clear screen */
case
CTRL_L
:
/* ctrl+l, clear screen */
linenoiseClearScreen
();
refreshLine
(
fd
,
prompt
,
buf
,
len
,
pos
,
cols
);
refreshLine
(
&
l
);
break
;
case
23
:
/* ctrl+w, delete previous word */
old_pos
=
pos
;
while
(
pos
>
0
&&
buf
[
pos
-
1
]
==
' '
)
pos
--
;
while
(
pos
>
0
&&
buf
[
pos
-
1
]
!=
' '
)
pos
--
;
diff
=
old_pos
-
pos
;
memmove
(
&
buf
[
pos
],
&
buf
[
old_pos
],
len
-
old_pos
+
1
);
len
-=
diff
;
refreshLine
(
fd
,
prompt
,
buf
,
len
,
pos
,
cols
);
case
CTRL_W
:
/* ctrl+w, delete previous word */
linenoiseEditDeletePrevWord
(
&
l
);
break
;
}
}
return
len
;
return
l
.
len
;
}
/* This special mode is used by linenoise in order to print scan codes
* on screen for debugging / development purposes. It is implemented
* by the linenoise_example program using the --keycodes option. */
void
linenoisePrintKeyCodes
(
void
)
{
char
quit
[
4
];
printf
(
"Linenoise key codes debugging mode.
\n
"
"Press keys to see scan codes. Type 'quit' at any time to exit.
\n
"
);
if
(
enableRawMode
(
STDIN_FILENO
)
==
-
1
)
return
;
memset
(
quit
,
' '
,
4
);
while
(
1
)
{
char
c
;
int
nread
;
nread
=
read
(
STDIN_FILENO
,
&
c
,
1
);
if
(
nread
<=
0
)
continue
;
memmove
(
quit
,
quit
+
1
,
sizeof
(
quit
)
-
1
);
/* shift string to left. */
quit
[
sizeof
(
quit
)
-
1
]
=
c
;
/* Insert current char on the right. */
if
(
memcmp
(
quit
,
"quit"
,
sizeof
(
quit
))
==
0
)
break
;
printf
(
"'%c' %02x (%d) (type quit to exit)
\n
"
,
isprint
(
c
)
?
c
:
'?'
,
(
int
)
c
,
(
int
)
c
);
printf
(
"
\x1b
[0G"
);
/* Go left edge manually, we are in raw mode. */
fflush
(
stdout
);
}
disableRawMode
(
STDIN_FILENO
);
}
/* This function calls the line editing function linenoiseEdit() using
* the STDIN file descriptor set in raw mode. */
static
int
linenoiseRaw
(
char
*
buf
,
size_t
buflen
,
const
char
*
prompt
)
{
int
fd
=
STDIN_FILENO
;
int
count
;
if
(
buflen
==
0
)
{
...
...
@@ -496,6 +920,7 @@ static int linenoiseRaw(char *buf, size_t buflen, const char *prompt) {
return
-
1
;
}
if
(
!
isatty
(
STDIN_FILENO
))
{
/* Not a tty: read from file / pipe. */
if
(
fgets
(
buf
,
buflen
,
stdin
)
==
NULL
)
return
-
1
;
count
=
strlen
(
buf
);
if
(
count
&&
buf
[
count
-
1
]
==
'\n'
)
{
...
...
@@ -503,14 +928,20 @@ static int linenoiseRaw(char *buf, size_t buflen, const char *prompt) {
buf
[
count
]
=
'\0'
;
}
}
else
{
if
(
enableRawMode
(
fd
)
==
-
1
)
return
-
1
;
count
=
linenoisePrompt
(
fd
,
buf
,
buflen
,
prompt
);
disableRawMode
(
fd
);
/* Interactive editing. */
if
(
enableRawMode
(
STDIN_FILENO
)
==
-
1
)
return
-
1
;
count
=
linenoiseEdit
(
STDIN_FILENO
,
STDOUT_FILENO
,
buf
,
buflen
,
prompt
);
disableRawMode
(
STDIN_FILENO
);
printf
(
"
\n
"
);
}
return
count
;
}
/* The high level function that is the main API of the linenoise library.
* This function checks if the terminal has basic capabilities, just checking
* for a blacklist of stupid terminals, and later either calls the line
* editing function or uses dummy fgets() so that you will be able to type
* something even in the most desperate of the conditions. */
char
*
linenoise
(
const
char
*
prompt
)
{
char
buf
[
LINENOISE_MAX_LINE
];
int
count
;
...
...
@@ -534,29 +965,50 @@ char *linenoise(const char *prompt) {
}
}
/* Register a callback function to be called for tab-completion. */
void
linenoiseSetCompletionCallback
(
linenoiseCompletionCallback
*
fn
)
{
completionCallback
=
fn
;
/* ================================ History ================================= */
/* Free the history, but does not reset it. Only used when we have to
* exit() to avoid memory leaks are reported by valgrind & co. */
static
void
freeHistory
(
void
)
{
if
(
history
)
{
int
j
;
for
(
j
=
0
;
j
<
history_len
;
j
++
)
free
(
history
[
j
]);
free
(
history
);
}
}
void
linenoiseAddCompletion
(
linenoiseCompletions
*
lc
,
char
*
str
)
{
size_t
len
=
strlen
(
str
);
char
*
copy
=
malloc
(
len
+
1
);
memcpy
(
copy
,
str
,
len
+
1
);
lc
->
cvec
=
realloc
(
lc
->
cvec
,
sizeof
(
char
*
)
*
(
lc
->
len
+
1
));
lc
->
cvec
[
lc
->
len
++
]
=
copy
;
/* At exit we'll try to fix the terminal to the initial conditions. */
static
void
linenoiseAtExit
(
void
)
{
disableRawMode
(
STDIN_FILENO
);
freeHistory
();
}
/* Using a circular buffer is smarter, but a bit more complex to handle. */
/* This is the API call to add a new entry in the linenoise history.
* It uses a fixed array of char pointers that are shifted (memmoved)
* when the history max length is reached in order to remove the older
* entry and make room for the new one, so it is not exactly suitable for huge
* histories, but will work well for a few hundred of entries.
*
* Using a circular buffer is smarter, but a bit more complex to handle. */
int
linenoiseHistoryAdd
(
const
char
*
line
)
{
char
*
linecopy
;
if
(
history_max_len
==
0
)
return
0
;
/* Initialization on first call. */
if
(
history
==
NULL
)
{
history
=
malloc
(
sizeof
(
char
*
)
*
history_max_len
);
if
(
history
==
NULL
)
return
0
;
memset
(
history
,
0
,(
sizeof
(
char
*
)
*
history_max_len
));
}
/* Don't add duplicated lines. */
if
(
history_len
&&
!
strcmp
(
history
[
history_len
-
1
],
line
))
return
0
;
/* Add an heap allocated copy of the line in the history.
* If we reached the max length, remove the older line. */
linecopy
=
strdup
(
line
);
if
(
!
linecopy
)
return
0
;
if
(
history_len
==
history_max_len
)
{
...
...
@@ -569,6 +1021,10 @@ int linenoiseHistoryAdd(const char *line) {
return
1
;
}
/* Set the maximum length for the history. This function can be called even
* if there is already some history, the function will make sure to retain
* just the latest 'len' elements if the new history length value is smaller
* than the amount of items already inside the history. */
int
linenoiseHistorySetMaxLen
(
int
len
)
{
char
**
new
;
...
...
@@ -578,8 +1034,16 @@ int linenoiseHistorySetMaxLen(int len) {
new
=
malloc
(
sizeof
(
char
*
)
*
len
);
if
(
new
==
NULL
)
return
0
;
if
(
len
<
tocopy
)
tocopy
=
len
;
memcpy
(
new
,
history
+
(
history_max_len
-
tocopy
),
sizeof
(
char
*
)
*
tocopy
);
/* If we can't copy everything, free the elements we'll not use. */
if
(
len
<
tocopy
)
{
int
j
;
for
(
j
=
0
;
j
<
tocopy
-
len
;
j
++
)
free
(
history
[
j
]);
tocopy
=
len
;
}
memset
(
new
,
0
,
sizeof
(
char
*
)
*
len
);
memcpy
(
new
,
history
+
(
history_len
-
tocopy
),
sizeof
(
char
*
)
*
tocopy
);
free
(
history
);
history
=
new
;
}
...
...
@@ -591,7 +1055,7 @@ int linenoiseHistorySetMaxLen(int len) {
/* Save the history in the specified file. On success 0 is returned
* otherwise -1 is returned. */
int
linenoiseHistorySave
(
char
*
filename
)
{
int
linenoiseHistorySave
(
const
char
*
filename
)
{
FILE
*
fp
=
fopen
(
filename
,
"w"
);
int
j
;
...
...
@@ -607,7 +1071,7 @@ int linenoiseHistorySave(char *filename) {
*
* If the file exists and the operation succeeded 0 is returned, otherwise
* on error -1 is returned. */
int
linenoiseHistoryLoad
(
char
*
filename
)
{
int
linenoiseHistoryLoad
(
const
char
*
filename
)
{
FILE
*
fp
=
fopen
(
filename
,
"r"
);
char
buf
[
LINENOISE_MAX_LINE
];
...
...
deps/linenoise/linenoise.h
View file @
429aff4e
...
...
@@ -3,39 +3,44 @@
*
* See linenoise.c for more information.
*
* ------------------------------------------------------------------------
*
* Copyright (c) 2010, Salvatore Sanfilippo <antirez at gmail dot com>
* Copyright (c) 2010, Pieter Noordhuis <pcnoordhuis at gmail dot com>
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Redis nor the names of its contributors may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __LINENOISE_H
#define __LINENOISE_H
#ifdef __cplusplus
extern
"C"
{
#endif
typedef
struct
linenoiseCompletions
{
size_t
len
;
char
**
cvec
;
...
...
@@ -43,13 +48,19 @@ typedef struct linenoiseCompletions {
typedef
void
(
linenoiseCompletionCallback
)(
const
char
*
,
linenoiseCompletions
*
);
void
linenoiseSetCompletionCallback
(
linenoiseCompletionCallback
*
);
void
linenoiseAddCompletion
(
linenoiseCompletions
*
,
char
*
);
void
linenoiseAddCompletion
(
linenoiseCompletions
*
,
const
char
*
);
char
*
linenoise
(
const
char
*
prompt
);
int
linenoiseHistoryAdd
(
const
char
*
line
);
int
linenoiseHistorySetMaxLen
(
int
len
);
int
linenoiseHistorySave
(
char
*
filename
);
int
linenoiseHistoryLoad
(
char
*
filename
);
int
linenoiseHistorySave
(
const
char
*
filename
);
int
linenoiseHistoryLoad
(
const
char
*
filename
);
void
linenoiseClearScreen
(
void
);
void
linenoiseSetMultiLine
(
int
ml
);
void
linenoisePrintKeyCodes
(
void
);
#ifdef __cplusplus
}
#endif
#endif
/* __LINENOISE_H */
src/redis-cli.c
View file @
429aff4e
...
...
@@ -866,6 +866,7 @@ static void repl() {
sds
*
argv
;
config
.
interactive
=
1
;
linenoiseSetMultiLine
(
1
);
linenoiseSetCompletionCallback
(
completionCallback
);
/* Only use history when stdin is a tty. */
...
...
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