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Use linenoise instead of readline on POSIX platforms for desktop LuaRPC
This commit is contained in:
James Snyder
parent
41dfa67e4c
commit
ef1f485db6
56
inc/linenoise_posix.h
Normal file
56
inc/linenoise_posix.h
Normal file
@ -0,0 +1,56 @@
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/* linenoise.h -- guerrilla line editing library against the idea that a
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* line editing lib needs to be 20,000 lines of C code.
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*
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* See linenoise.c for more information.
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*
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* ------------------------------------------------------------------------
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*
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* Copyright (c) 2010, Salvatore Sanfilippo <antirez at gmail dot com>
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* Copyright (c) 2010, Pieter Noordhuis <pcnoordhuis at gmail dot com>
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __LINENOISE_H
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#define __LINENOISE_H
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typedef struct linenoiseCompletions {
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size_t len;
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char **cvec;
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} linenoiseCompletions;
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typedef void(linenoiseCompletionCallback)(const char *, linenoiseCompletions *);
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void linenoiseSetCompletionCallback(linenoiseCompletionCallback *);
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void linenoiseAddCompletion(linenoiseCompletions *, char *);
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char *linenoise(const char *prompt);
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int linenoiseHistoryAdd(const char *line);
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int linenoiseHistorySetMaxLen(int len);
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int linenoiseHistorySave(char *filename);
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int linenoiseHistoryLoad(char *filename);
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void linenoiseClearScreen(void);
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#endif /* __LINENOISE_H */
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@ -16,9 +16,8 @@ if platform.system() == "Windows":
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lua_full_files += " src/serial/serial_win32.c"
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cdefs += " -DWIN32_BUILD"
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else:
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lua_full_files += " src/serial/serial_posix.c"
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external_libs += " -lreadline"
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cdefs += " -DLUA_USE_READLINE"
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lua_full_files += " src/serial/serial_posix.c src/linenoise_posix.c"
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cdefs += " -DLUA_USE_LINENOISE "
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local_include = "-Isrc/lua -Iinc -Isrc/modules -Iinc/desktop"
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612
src/linenoise_posix.c
Normal file
612
src/linenoise_posix.c
Normal file
@ -0,0 +1,612 @@
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/* linenoise.c -- guerrilla line editing library against the idea that a
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* line editing lib needs to be 20,000 lines of C code.
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*
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* You can find the latest source code at:
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*
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* http://github.com/antirez/linenoise
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*
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* Does a number of crazy assumptions that happen to be true in 99.9999% of
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* the 2010 UNIX computers around.
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*
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* ------------------------------------------------------------------------
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*
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* Copyright (c) 2010, Salvatore Sanfilippo <antirez at gmail dot com>
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* Copyright (c) 2010, Pieter Noordhuis <pcnoordhuis at gmail dot com>
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ------------------------------------------------------------------------
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*
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* References:
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* - http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
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* - http://www.3waylabs.com/nw/WWW/products/wizcon/vt220.html
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*
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* Todo list:
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* - Switch to gets() if $TERM is something we can't support.
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* - Filter bogus Ctrl+<char> combinations.
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* - Win32 support
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*
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* Bloat:
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* - Completion?
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* - History search like Ctrl+r in readline?
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*
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* List of escape sequences used by this program, we do everything just
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* with three sequences. In order to be so cheap we may have some
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* flickering effect with some slow terminal, but the lesser sequences
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* the more compatible.
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*
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* CHA (Cursor Horizontal Absolute)
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* Sequence: ESC [ n G
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* Effect: moves cursor to column n
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*
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* EL (Erase Line)
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* Sequence: ESC [ n K
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* Effect: if n is 0 or missing, clear from cursor to end of line
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* Effect: if n is 1, clear from beginning of line to cursor
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* Effect: if n is 2, clear entire line
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*
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* CUF (CUrsor Forward)
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* Sequence: ESC [ n C
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* Effect: moves cursor forward of n chars
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*
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* The following are used to clear the screen: ESC [ H ESC [ 2 J
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* This is actually composed of two sequences:
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*
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* cursorhome
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* Sequence: ESC [ H
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* Effect: moves the cursor to upper left corner
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*
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* ED2 (Clear entire screen)
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* Sequence: ESC [ 2 J
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* Effect: clear the whole screen
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*
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*/
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#include <termios.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include "linenoise_posix.h"
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#define LINENOISE_DEFAULT_HISTORY_MAX_LEN 100
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#define LINENOISE_MAX_LINE 4096
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static char *unsupported_term[] = {"dumb","cons25",NULL};
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static linenoiseCompletionCallback *completionCallback = NULL;
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static struct termios orig_termios; /* in order to restore at exit */
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static int rawmode = 0; /* for atexit() function to check if restore is needed*/
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static int atexit_registered = 0; /* register atexit just 1 time */
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static int history_max_len = LINENOISE_DEFAULT_HISTORY_MAX_LEN;
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static int history_len = 0;
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char **history = NULL;
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static void linenoiseAtExit(void);
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int linenoiseHistoryAdd(const char *line);
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static int isUnsupportedTerm(void) {
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char *term = getenv("TERM");
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int j;
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if (term == NULL) return 0;
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for (j = 0; unsupported_term[j]; j++)
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if (!strcasecmp(term,unsupported_term[j])) return 1;
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return 0;
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}
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static void freeHistory(void) {
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if (history) {
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int j;
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for (j = 0; j < history_len; j++)
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free(history[j]);
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free(history);
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}
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}
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static int enableRawMode(int fd) {
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struct termios raw;
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if (!isatty(STDIN_FILENO)) goto fatal;
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if (!atexit_registered) {
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atexit(linenoiseAtExit);
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atexit_registered = 1;
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}
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if (tcgetattr(fd,&orig_termios) == -1) goto fatal;
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raw = orig_termios; /* modify the original mode */
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/* input modes: no break, no CR to NL, no parity check, no strip char,
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* no start/stop output control. */
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raw.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
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/* output modes - disable post processing */
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raw.c_oflag &= ~(OPOST);
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/* control modes - set 8 bit chars */
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raw.c_cflag |= (CS8);
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/* local modes - choing off, canonical off, no extended functions,
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* no signal chars (^Z,^C) */
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raw.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
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/* control chars - set return condition: min number of bytes and timer.
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* We want read to return every single byte, without timeout. */
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raw.c_cc[VMIN] = 1; raw.c_cc[VTIME] = 0; /* 1 byte, no timer */
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/* put terminal in raw mode after flushing */
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if (tcsetattr(fd,TCSAFLUSH,&raw) < 0) goto fatal;
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rawmode = 1;
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return 0;
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fatal:
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errno = ENOTTY;
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return -1;
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}
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static void disableRawMode(int fd) {
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/* Don't even check the return value as it's too late. */
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if (rawmode && tcsetattr(fd,TCSAFLUSH,&orig_termios) != -1)
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rawmode = 0;
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}
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/* At exit we'll try to fix the terminal to the initial conditions. */
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static void linenoiseAtExit(void) {
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disableRawMode(STDIN_FILENO);
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freeHistory();
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}
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static int getColumns(void) {
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struct winsize ws;
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if (ioctl(1, TIOCGWINSZ, &ws) == -1) return 80;
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return ws.ws_col;
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}
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static void refreshLine(int fd, const char *prompt, char *buf, size_t len, size_t pos, size_t cols) {
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char seq[64];
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size_t plen = strlen(prompt);
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while((plen+pos) >= cols) {
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buf++;
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len--;
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pos--;
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}
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while (plen+len > cols) {
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len--;
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}
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/* Cursor to left edge */
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snprintf(seq,64,"\x1b[0G");
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if (write(fd,seq,strlen(seq)) == -1) return;
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/* Write the prompt and the current buffer content */
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if (write(fd,prompt,strlen(prompt)) == -1) return;
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if (write(fd,buf,len) == -1) return;
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/* Erase to right */
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snprintf(seq,64,"\x1b[0K");
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if (write(fd,seq,strlen(seq)) == -1) return;
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/* Move cursor to original position. */
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snprintf(seq,64,"\x1b[0G\x1b[%dC", (int)(pos+plen));
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if (write(fd,seq,strlen(seq)) == -1) return;
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}
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static void beep() {
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fprintf(stderr, "\x7");
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fflush(stderr);
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}
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static void freeCompletions(linenoiseCompletions *lc) {
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size_t i;
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for (i = 0; i < lc->len; i++)
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free(lc->cvec[i]);
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if (lc->cvec != NULL)
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free(lc->cvec);
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}
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static int completeLine(int fd, const char *prompt, char *buf, size_t buflen, size_t *len, size_t *pos, size_t cols) {
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linenoiseCompletions lc = { 0, NULL };
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int nread, nwritten;
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char c = 0;
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completionCallback(buf,&lc);
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if (lc.len == 0) {
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beep();
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} else {
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size_t stop = 0, i = 0;
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size_t clen;
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while(!stop) {
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/* Show completion or original buffer */
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if (i < lc.len) {
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clen = strlen(lc.cvec[i]);
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refreshLine(fd,prompt,lc.cvec[i],clen,clen,cols);
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} else {
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refreshLine(fd,prompt,buf,*len,*pos,cols);
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}
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nread = read(fd,&c,1);
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if (nread <= 0) {
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freeCompletions(&lc);
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return -1;
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}
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switch(c) {
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case 9: /* tab */
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i = (i+1) % (lc.len+1);
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if (i == lc.len) beep();
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break;
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case 27: /* escape */
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/* Re-show original buffer */
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if (i < lc.len) {
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refreshLine(fd,prompt,buf,*len,*pos,cols);
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}
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stop = 1;
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break;
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default:
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/* Update buffer and return */
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if (i < lc.len) {
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nwritten = snprintf(buf,buflen,"%s",lc.cvec[i]);
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*len = *pos = nwritten;
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}
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stop = 1;
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break;
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}
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}
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}
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freeCompletions(&lc);
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return c; /* Return last read character */
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}
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void linenoiseClearScreen(void) {
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if (write(STDIN_FILENO,"\x1b[H\x1b[2J",7) <= 0) {
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/* nothing to do, just to avoid warning. */
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}
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}
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static int linenoisePrompt(int fd, char *buf, size_t buflen, const char *prompt) {
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size_t plen = strlen(prompt);
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size_t pos = 0;
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size_t len = 0;
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size_t cols = getColumns();
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int history_index = 0;
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buf[0] = '\0';
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buflen--; /* Make sure there is always space for the nulterm */
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/* The latest history entry is always our current buffer, that
|
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* initially is just an empty string. */
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linenoiseHistoryAdd("");
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if (write(fd,prompt,plen) == -1) return -1;
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while(1) {
|
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char c;
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int nread;
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char seq[2], seq2[2];
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nread = read(fd,&c,1);
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if (nread <= 0) return len;
|
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|
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/* Only autocomplete when the callback is set. It returns < 0 when
|
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* there was an error reading from fd. Otherwise it will return the
|
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* character that should be handled next. */
|
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if (c == 9 && completionCallback != NULL) {
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c = completeLine(fd,prompt,buf,buflen,&len,&pos,cols);
|
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/* Return on errors */
|
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if (c < 0) return len;
|
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/* Read next character when 0 */
|
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if (c == 0) continue;
|
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}
|
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|
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switch(c) {
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case 13: /* enter */
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history_len--;
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free(history[history_len]);
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return (int)len;
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case 3: /* ctrl-c */
|
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errno = EAGAIN;
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return -1;
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case 127: /* backspace */
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case 8: /* ctrl-h */
|
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if (pos > 0 && len > 0) {
|
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memmove(buf+pos-1,buf+pos,len-pos);
|
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pos--;
|
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len--;
|
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buf[len] = '\0';
|
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refreshLine(fd,prompt,buf,len,pos,cols);
|
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}
|
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break;
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case 4: /* ctrl-d, remove char at right of cursor */
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if (len > 1 && pos < (len-1)) {
|
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memmove(buf+pos,buf+pos+1,len-pos);
|
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len--;
|
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buf[len] = '\0';
|
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refreshLine(fd,prompt,buf,len,pos,cols);
|
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} else if (len == 0) {
|
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history_len--;
|
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free(history[history_len]);
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return -1;
|
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}
|
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break;
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case 20: /* ctrl-t */
|
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if (pos > 0 && pos < len) {
|
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int aux = buf[pos-1];
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buf[pos-1] = buf[pos];
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buf[pos] = aux;
|
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if (pos != len-1) pos++;
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refreshLine(fd,prompt,buf,len,pos,cols);
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}
|
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break;
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case 2: /* ctrl-b */
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goto left_arrow;
|
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case 6: /* ctrl-f */
|
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goto right_arrow;
|
||||
case 16: /* ctrl-p */
|
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seq[1] = 65;
|
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goto up_down_arrow;
|
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case 14: /* ctrl-n */
|
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seq[1] = 66;
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goto up_down_arrow;
|
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break;
|
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case 27: /* escape sequence */
|
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if (read(fd,seq,2) == -1) break;
|
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if (seq[0] == 91 && seq[1] == 68) {
|
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left_arrow:
|
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/* left arrow */
|
||||
if (pos > 0) {
|
||||
pos--;
|
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refreshLine(fd,prompt,buf,len,pos,cols);
|
||||
}
|
||||
} else if (seq[0] == 91 && seq[1] == 67) {
|
||||
right_arrow:
|
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/* 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;
|
||||
break;
|
||||
} else if (history_index >= history_len) {
|
||||
history_index = history_len-1;
|
||||
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);
|
||||
}
|
||||
}
|
||||
}
|
||||
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. */
|
||||
buf[0] = '\0';
|
||||
pos = len = 0;
|
||||
refreshLine(fd,prompt,buf,len,pos,cols);
|
||||
break;
|
||||
case 11: /* Ctrl+k, delete from current to end of line. */
|
||||
buf[pos] = '\0';
|
||||
len = pos;
|
||||
refreshLine(fd,prompt,buf,len,pos,cols);
|
||||
break;
|
||||
case 1: /* Ctrl+a, go to the start of the line */
|
||||
pos = 0;
|
||||
refreshLine(fd,prompt,buf,len,pos,cols);
|
||||
break;
|
||||
case 5: /* ctrl+e, go to the end of the line */
|
||||
pos = len;
|
||||
refreshLine(fd,prompt,buf,len,pos,cols);
|
||||
break;
|
||||
case 12: /* ctrl+l, clear screen */
|
||||
linenoiseClearScreen();
|
||||
refreshLine(fd,prompt,buf,len,pos,cols);
|
||||
}
|
||||
}
|
||||
return len;
|
||||
}
|
||||
|
||||
static int linenoiseRaw(char *buf, size_t buflen, const char *prompt) {
|
||||
int fd = STDIN_FILENO;
|
||||
int count;
|
||||
|
||||
if (buflen == 0) {
|
||||
errno = EINVAL;
|
||||
return -1;
|
||||
}
|
||||
if (!isatty(STDIN_FILENO)) {
|
||||
if (fgets(buf, buflen, stdin) == NULL) return -1;
|
||||
count = strlen(buf);
|
||||
if (count && buf[count-1] == '\n') {
|
||||
count--;
|
||||
buf[count] = '\0';
|
||||
}
|
||||
} else {
|
||||
if (enableRawMode(fd) == -1) return -1;
|
||||
count = linenoisePrompt(fd, buf, buflen, prompt);
|
||||
disableRawMode(fd);
|
||||
printf("\n");
|
||||
}
|
||||
return count;
|
||||
}
|
||||
|
||||
char *linenoise(const char *prompt) {
|
||||
char buf[LINENOISE_MAX_LINE];
|
||||
int count;
|
||||
|
||||
if (isUnsupportedTerm()) {
|
||||
size_t len;
|
||||
|
||||
printf("%s",prompt);
|
||||
fflush(stdout);
|
||||
if (fgets(buf,LINENOISE_MAX_LINE,stdin) == NULL) return NULL;
|
||||
len = strlen(buf);
|
||||
while(len && (buf[len-1] == '\n' || buf[len-1] == '\r')) {
|
||||
len--;
|
||||
buf[len] = '\0';
|
||||
}
|
||||
return strdup(buf);
|
||||
} else {
|
||||
count = linenoiseRaw(buf,LINENOISE_MAX_LINE,prompt);
|
||||
if (count == -1) return NULL;
|
||||
return strdup(buf);
|
||||
}
|
||||
}
|
||||
|
||||
/* Register a callback function to be called for tab-completion. */
|
||||
void linenoiseSetCompletionCallback(linenoiseCompletionCallback *fn) {
|
||||
completionCallback = fn;
|
||||
}
|
||||
|
||||
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;
|
||||
}
|
||||
|
||||
/* 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;
|
||||
if (history == NULL) {
|
||||
history = malloc(sizeof(char*)*history_max_len);
|
||||
if (history == NULL) return 0;
|
||||
memset(history,0,(sizeof(char*)*history_max_len));
|
||||
}
|
||||
linecopy = strdup(line);
|
||||
if (!linecopy) return 0;
|
||||
if (history_len == history_max_len) {
|
||||
free(history[0]);
|
||||
memmove(history,history+1,sizeof(char*)*(history_max_len-1));
|
||||
history_len--;
|
||||
}
|
||||
history[history_len] = linecopy;
|
||||
history_len++;
|
||||
return 1;
|
||||
}
|
||||
|
||||
int linenoiseHistorySetMaxLen(int len) {
|
||||
char **new;
|
||||
|
||||
if (len < 1) return 0;
|
||||
if (history) {
|
||||
int tocopy = history_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);
|
||||
free(history);
|
||||
history = new;
|
||||
}
|
||||
history_max_len = len;
|
||||
if (history_len > history_max_len)
|
||||
history_len = history_max_len;
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* Save the history in the specified file. On success 0 is returned
|
||||
* otherwise -1 is returned. */
|
||||
int linenoiseHistorySave(char *filename) {
|
||||
FILE *fp = fopen(filename,"w");
|
||||
int j;
|
||||
|
||||
if (fp == NULL) return -1;
|
||||
for (j = 0; j < history_len; j++)
|
||||
fprintf(fp,"%s\n",history[j]);
|
||||
fclose(fp);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Load the history from the specified file. If the file does not exist
|
||||
* zero is returned and no operation is performed.
|
||||
*
|
||||
* If the file exists and the operation succeeded 0 is returned, otherwise
|
||||
* on error -1 is returned. */
|
||||
int linenoiseHistoryLoad(char *filename) {
|
||||
FILE *fp = fopen(filename,"r");
|
||||
char buf[LINENOISE_MAX_LINE];
|
||||
|
||||
if (fp == NULL) return -1;
|
||||
|
||||
while (fgets(buf,LINENOISE_MAX_LINE,fp) != NULL) {
|
||||
char *p;
|
||||
|
||||
p = strchr(buf,'\r');
|
||||
if (!p) p = strchr(buf,'\n');
|
||||
if (p) *p = '\0';
|
||||
linenoiseHistoryAdd(buf);
|
||||
}
|
||||
fclose(fp);
|
||||
return 0;
|
||||
}
|
||||
@ -300,6 +300,13 @@
|
||||
if (lua_strlen(L,idx) > 0) /* non-empty line? */ \
|
||||
add_history(lua_tostring(L, idx)); /* add it to history */
|
||||
#define lua_freeline(L,b) ((void)L, free(b))
|
||||
#elif defined(LUA_USE_LINENOISE) // #if defined(LUA_USE_READLINE)
|
||||
#include "linenoise_posix.h"
|
||||
#define lua_readline(L,b,p) ((void)L, ((b)=linenoise(p)) != NULL)
|
||||
#define lua_saveline(L,idx) \
|
||||
if (lua_strlen(L,idx) > 0) /* non-empty line? */ \
|
||||
linenoiseHistoryAdd(lua_tostring(L, idx)); /* add it to history */
|
||||
#define lua_freeline(L,b) ((void)L, free(b))
|
||||
#else // #if defined(LUA_USE_READLINE)
|
||||
#define lua_readline(L,b,p) \
|
||||
((void)L, fputs(p, stdout), fflush(stdout), /* show prompt */ \
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user