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authorOndrej Zajicek <santiago@crfreenet.org>2009-07-15 01:47:29 +0200
committerOndrej Zajicek <santiago@crfreenet.org>2009-07-15 01:47:29 +0200
commitf0333f44a5a4bec9f3978a90cf7eda1b0a2ec151 (patch)
tree30033a111a2ed8162564d9bcf7ef793ba2a51a0d
parent6baef17ecf1ed994cfc8038bc610e8b7ff88506a (diff)
downloadbird-f0333f44a5a4bec9f3978a90cf7eda1b0a2ec151.tar
bird-f0333f44a5a4bec9f3978a90cf7eda1b0a2ec151.zip
Implements 'more' feature to birdc.
Also does some code restructuring.
-rw-r--r--client/client.c151
1 files changed, 105 insertions, 46 deletions
diff --git a/client/client.c b/client/client.c
index 6a217c7..ea8f8d3 100644
--- a/client/client.c
+++ b/client/client.c
@@ -17,6 +17,7 @@
#include <sys/types.h>
#include <readline/readline.h>
#include <readline/history.h>
+#include <curses.h>
#include "nest/bird.h"
#include "lib/resource.h"
@@ -29,13 +30,19 @@ static int verbose;
static char *server_path = PATH_CONTROL_SOCKET;
static int server_fd;
-static int server_reply;
static byte server_read_buf[4096];
static byte *server_read_pos = server_read_buf;
+#define STATE_PROMPT 0
+#define STATE_CMD_SERVER 1
+#define STATE_CMD_USER 2
+
static int input_initialized;
-static int input_hidden;
static int input_hidden_end;
+static int cstate = STATE_CMD_SERVER;
+static int nstate = STATE_CMD_SERVER;
+
+static int num_lines, skip_input, interactive;
/*** Parsing of arguments ***/
@@ -70,7 +77,6 @@ parse_args(int argc, char **argv)
/*** Input ***/
static void server_send(char *);
-static void select_loop(int);
/* HACK: libreadline internals we need to access */
extern int _rl_vis_botlin;
@@ -93,6 +99,15 @@ handle_internal_command(char *cmd)
return 0;
}
+void
+submit_server_command(char *cmd)
+{
+ server_send(cmd);
+ nstate = STATE_CMD_SERVER;
+ num_lines = 2;
+}
+
+
static void
got_line(char *cmd_buffer)
{
@@ -109,13 +124,10 @@ got_line(char *cmd_buffer)
if (cmd)
{
add_history(cmd);
+
if (!handle_internal_command(cmd))
- {
- server_send(cmd);
- input_hidden = -1;
- select_loop(0);
- input_hidden = 0;
- }
+ submit_server_command(cmd);
+
free(cmd);
}
else
@@ -219,27 +231,23 @@ input_init(void)
static void
input_hide(void)
{
- if (input_hidden)
- return;
- if (rl_line_buffer)
- {
- input_hidden_end = rl_end;
- rl_end = 0;
- rl_expand_prompt("");
- rl_redisplay();
- input_hidden = 1;
- }
+ input_hidden_end = rl_end;
+ rl_end = 0;
+ rl_expand_prompt("");
+ rl_redisplay();
}
static void
input_reveal(void)
{
- if (input_hidden <= 0)
- return;
+ /* need this, otherwise some lib seems to eat pending output when
+ the prompt is displayed */
+ fflush(stdout);
+ tcdrain(fileno(stdout));
+
rl_end = input_hidden_end;
rl_expand_prompt("bird> ");
rl_forced_update_display();
- input_hidden = 0;
}
void
@@ -253,6 +261,51 @@ cleanup(void)
}
}
+void
+update_state(void)
+{
+ if (nstate == cstate)
+ return;
+
+ if (nstate == STATE_PROMPT)
+ if (input_initialized)
+ input_reveal();
+ else
+ input_init();
+
+ if (nstate != STATE_PROMPT)
+ input_hide();
+
+ cstate = nstate;
+}
+
+void
+more(void)
+{
+ printf("--More--\015");
+ fflush(stdout);
+
+ redo:
+ switch (getchar())
+ {
+ case 32:
+ num_lines = 2;
+ break;
+ case 13:
+ num_lines--;
+ break;
+ case 'q':
+ skip_input = 1;
+ break;
+ default:
+ goto redo;
+ }
+
+ printf(" \015");
+ fflush(stdout);
+}
+
+
/*** Communication with server ***/
static void
@@ -281,26 +334,32 @@ server_got_reply(char *x)
{
int code;
- input_hide();
if (*x == '+') /* Async reply */
- printf(">>> %s\n", x+1);
+ skip_input || printf(">>> %s\n", x+1);
else if (x[0] == ' ') /* Continuation */
- printf("%s%s\n", verbose ? " " : "", x+1);
+ skip_input || printf("%s%s\n", verbose ? " " : "", x+1);
else if (strlen(x) > 4 &&
sscanf(x, "%d", &code) == 1 && code >= 0 && code < 10000 &&
(x[4] == ' ' || x[4] == '-'))
{
if (code)
- printf("%s\n", verbose ? x : x+5);
+ skip_input || printf("%s\n", verbose ? x : x+5);
if (x[4] == ' ')
- server_reply = code;
+ {
+ nstate = STATE_PROMPT;
+ skip_input = 0;
+ return;
+ }
}
else
- printf("??? <%s>\n", x);
- /* need this, otherwise some lib seems to eat pending output when
- the prompt is displayed */
- fflush(stdout);
- tcdrain(fileno(stdout));
+ skip_input || printf("??? <%s>\n", x);
+
+ if (skip_input)
+ return;
+
+ num_lines++;
+ if (interactive && input_initialized && (num_lines >= LINES) && (cstate == STATE_CMD_SERVER))
+ more();
}
static void
@@ -347,15 +406,16 @@ server_read(void)
static fd_set select_fds;
static void
-select_loop(int mode)
+select_loop(void)
{
int rv;
- server_reply = -1;
- while (mode || server_reply < 0)
+ while (1)
{
FD_ZERO(&select_fds);
- FD_SET(server_fd, &select_fds);
- if (mode)
+
+ if (cstate != STATE_CMD_USER)
+ FD_SET(server_fd, &select_fds);
+ if (cstate != STATE_CMD_SERVER)
FD_SET(0, &select_fds);
rv = select(server_fd+1, &select_fds, NULL, NULL, NULL);
@@ -370,13 +430,15 @@ select_loop(int mode)
if (FD_ISSET(server_fd, &select_fds))
{
server_read();
- if (mode)
- input_reveal();
+ update_state();
}
+
if (FD_ISSET(0, &select_fds))
- rl_callback_read_char();
+ {
+ rl_callback_read_char();
+ update_state();
+ }
}
- input_reveal();
}
static void
@@ -440,13 +502,10 @@ main(int argc, char **argv)
dmalloc_debug(0x2f03d00);
#endif
+ interactive = isatty(0);
parse_args(argc, argv);
cmd_build_tree();
server_connect();
- select_loop(0);
-
- input_init();
-
- select_loop(1);
+ select_loop();
return 0;
}