By default, continue to use libreadline, but if `--with-cli=linenoise`
is passed to configure, build the linenoise implementation instead.
Signed-off-by: Jeremy Sowden <jer...@azazel.net>
---
configure.ac | 17 ++++++++---
include/cli.h | 2 +-
src/cli.c | 64 ++++++++++++++++++++++++++++++++++------
tests/build/run-tests.sh | 4 +--
4 files changed, 71 insertions(+), 16 deletions(-)
diff --git a/configure.ac b/configure.ac
index 68f97f090535..73654b005cd2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -68,12 +68,21 @@ AC_CHECK_LIB([gmp],[__gmpz_init], , AC_MSG_ERROR([No
suitable version of libgmp
AM_CONDITIONAL([BUILD_MINIGMP], [test "x$with_mini_gmp" = xyes])
AC_ARG_WITH([cli], [AS_HELP_STRING([--without-cli],
- [disable interactive CLI (libreadline support)])],
- [], [with_cli=yes])
-AS_IF([test "x$with_cli" != xno], [
+ [disable interactive CLI (libreadline or linenoise support)])],
+ [], [with_cli=readline])
+
+AS_IF([test "x$with_cli" = xreadline], [
AC_CHECK_LIB([readline], [readline], ,
- AC_MSG_ERROR([No suitable version of libreadline found]))
+ AC_MSG_ERROR([No suitable version of libreadline found]))
AC_DEFINE([HAVE_LIBREADLINE], [1], [])
+],
+ [test "x$with_cli" = xlinenoise], [
+AC_CHECK_LIB([linenoise], [linenoise], ,
+ AC_MSG_ERROR([No suitable version of linenoise found]))
+AC_DEFINE([HAVE_LIBLINENOISE], [1], [])
+],
+ [test "x$with_cli" != xno], [
+AC_MSG_ERROR([unexpected CLI value: $with_cli])
])
AM_CONDITIONAL([BUILD_CLI], [test "x$with_cli" != xno])
diff --git a/include/cli.h b/include/cli.h
index 023f004b8dab..d82517750abc 100644
--- a/include/cli.h
+++ b/include/cli.h
@@ -4,7 +4,7 @@
#include <nftables/libnftables.h>
#include <config.h>
-#ifdef HAVE_LIBREADLINE
+#if defined(HAVE_LIBREADLINE) || defined(HAVE_LIBLINENOISE)
extern int cli_init(struct nft_ctx *nft);
#else
static inline int cli_init(struct nft_ctx *nft)
diff --git a/src/cli.c b/src/cli.c
index f1e89926f2bc..4c0c3e9d67c6 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -21,16 +21,36 @@
#include <string.h>
#include <ctype.h>
#include <limits.h>
+#ifdef HAVE_LIBREADLINE
#include <readline/readline.h>
#include <readline/history.h>
+#else
+#include <linenoise.h>
+#endif
#include <cli.h>
#include <list.h>
#define CMDLINE_HISTFILE ".nft.history"
+#define CMDLINE_PROMPT "nft> "
+#define CMDLINE_QUIT "quit"
-static struct nft_ctx *cli_nft;
static char histfile[PATH_MAX];
+
+static void
+init_histfile(void)
+{
+ const char *home;
+
+ home = getenv("HOME");
+ if (home == NULL)
+ home = "";
+ snprintf(histfile, sizeof(histfile), "%s/%s", home, CMDLINE_HISTFILE);
+}
+
+#ifdef HAVE_LIBREADLINE
+
+static struct nft_ctx *cli_nft;
static char *multiline;
static char *cli_append_multiline(char *line)
@@ -100,7 +120,7 @@ static void cli_complete(char *line)
if (*c == '\0')
return;
- if (!strcmp(line, "quit")) {
+ if (!strcmp(line, CMDLINE_QUIT)) {
cli_exit();
exit(0);
}
@@ -121,20 +141,15 @@ static char **cli_completion(const char *text, int start,
int end)
int cli_init(struct nft_ctx *nft)
{
- const char *home;
-
cli_nft = nft;
rl_readline_name = "nft";
rl_instream = stdin;
rl_outstream = stdout;
- rl_callback_handler_install("nft> ", cli_complete);
+ rl_callback_handler_install(CMDLINE_PROMPT, cli_complete);
rl_attempted_completion_function = cli_completion;
- home = getenv("HOME");
- if (home == NULL)
- home = "";
- snprintf(histfile, sizeof(histfile), "%s/%s", home, CMDLINE_HISTFILE);
+ init_histfile();
read_history(histfile);
history_set_pos(history_length);
@@ -150,3 +165,34 @@ void cli_exit(void)
rl_deprep_terminal();
write_history(histfile);
}
+
+#else /* !HAVE_LIBREADLINE */
+
+int cli_init(struct nft_ctx *nft)
+{
+ int quit = 0;
+ char *line;
+
+ init_histfile();
+ linenoiseHistoryLoad(histfile);
+ linenoiseSetMultiLine(1);
+
+ while (!quit && (line = linenoise(CMDLINE_PROMPT)) != NULL) {
+ if (strcmp(line, CMDLINE_QUIT) == 0) {
+ quit = 1;
+ } else if (line[0] != '\0') {
+ linenoiseHistoryAdd(line);
+ nft_run_cmd_from_buffer(nft, line);
+ }
+ linenoiseFree(line);
+ }
+ cli_exit();
+ exit(0);
+}
+
+void cli_exit(void)
+{
+ linenoiseHistorySave(histfile);
+}
+
+#endif /* HAVE_LIBREADLINE */
diff --git a/tests/build/run-tests.sh b/tests/build/run-tests.sh
index b0560da61398..ccb62af3d8dd 100755
--- a/tests/build/run-tests.sh
+++ b/tests/build/run-tests.sh
@@ -2,8 +2,8 @@
log_file="`pwd`/tests.log"
dir=../..
-argument=( --without-cli --enable-debug --with-mini-gmp --enable-man-doc
- --with-xtables --with-json)
+argument=( --without-cli --with-cli=linenoise --enable-debug --with-mini-gmp
+ --enable-man-doc --with-xtables --with-json)
ok=0
failed=0
--
2.23.0
