From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
This add initial code for things like input handling as well as some
basic commands.
---
client/bluetooth-player.c | 318 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 318 insertions(+)
diff --git a/client/bluetooth-player.c b/client/bluetooth-player.c
index b38861a..687c649 100644
--- a/client/bluetooth-player.c
+++ b/client/bluetooth-player.c
@@ -25,7 +25,325 @@
#include <config.h>
#endif
+#include <stdio.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <sys/signalfd.h>
+
+#include <readline/readline.h>
+#include <readline/history.h>
+#include <glib.h>
+#include <gdbus.h>
+
+#include "display.h"
+
+/* String display constants */
+#define COLORED_NEW COLOR_GREEN "NEW" COLOR_OFF
+#define COLORED_CHG COLOR_YELLOW "CHG" COLOR_OFF
+#define COLORED_DEL COLOR_RED "DEL" COLOR_OFF
+
+#define PROMPT_ON COLOR_BLUE "[bluetooth]" COLOR_OFF "# "
+#define PROMPT_OFF "[bluetooth]# "
+
+static GMainLoop *main_loop;
+static DBusConnection *dbus_conn;
+
+static void connect_handler(DBusConnection *connection, void *user_data)
+{
+ rl_set_prompt(PROMPT_ON);
+ printf("\r");
+ rl_on_new_line();
+ rl_redisplay();
+}
+
+static void disconnect_handler(DBusConnection *connection, void *user_data)
+{
+ rl_set_prompt(PROMPT_OFF);
+ printf("\r");
+ rl_on_new_line();
+ rl_redisplay();
+}
+
+static void cmd_quit(int argc, char *argv[])
+{
+ g_main_loop_quit(main_loop);
+}
+
+static const struct {
+ const char *cmd;
+ const char *arg;
+ void (*func) (int argc, char *argv[]);
+ const char *desc;
+} cmd_table[] = {
+ { "quit", NULL, cmd_quit, "Quit program" },
+ { "exit", NULL, cmd_quit },
+ { "help" },
+ {}
+};
+
+static char *cmd_generator(const char *text, int state)
+{
+ static int index, len;
+ const char *cmd;
+
+ if (!state) {
+ index = 0;
+ len = strlen(text);
+ }
+
+ while ((cmd = cmd_table[index].cmd)) {
+ index++;
+
+ if (!strncmp(cmd, text, len))
+ return strdup(cmd);
+ }
+
+ return NULL;
+}
+
+static char **cmd_completion(const char *text, int start, int end)
+{
+ char **matches = NULL;
+
+ if (start == 0) {
+ rl_completion_display_matches_hook = NULL;
+ matches = rl_completion_matches(text, cmd_generator);
+ }
+
+ if (!matches)
+ rl_attempted_completion_over = 1;
+
+ return matches;
+}
+
+static void rl_handler(char *input)
+{
+ int argc;
+ char **argv = NULL;
+ int i;
+
+ if (!input) {
+ rl_insert_text("quit");
+ rl_redisplay();
+ rl_crlf();
+ g_main_loop_quit(main_loop);
+ return;
+ }
+
+ if (!strlen(input))
+ goto done;
+
+ add_history(input);
+
+ argv = g_strsplit(input, " ", -1);
+ if (argv == NULL)
+ goto done;
+
+ for (argc = 0; argv[argc];)
+ argc++;
+
+ if (argc == 0)
+ goto done;
+
+ for (i = 0; cmd_table[i].cmd; i++) {
+ if (strcmp(argv[0], cmd_table[i].cmd))
+ continue;
+
+ if (cmd_table[i].func) {
+ cmd_table[i].func(argc, argv);
+ goto done;
+ }
+ }
+
+ if (strcmp(argv[0], "help")) {
+ printf("Invalid command\n");
+ goto done;
+ }
+
+ printf("Available commands:\n");
+
+ for (i = 0; cmd_table[i].cmd; i++) {
+ if (cmd_table[i].desc)
+ printf("\t%s %s\t%s\n", cmd_table[i].cmd,
+ cmd_table[i].arg ? : " ",
+ cmd_table[i].desc);
+ }
+
+done:
+ g_strfreev(argv);
+ free(input);
+}
+
+static gboolean option_version = FALSE;
+
+static GOptionEntry options[] = {
+ { "version", 'v', 0, G_OPTION_ARG_NONE, &option_version,
+ "Show version information and exit" },
+ { NULL },
+};
+
+static gboolean signal_handler(GIOChannel *channel, GIOCondition condition,
+ gpointer user_data)
+{
+ static unsigned int __terminated = 0;
+ struct signalfd_siginfo si;
+ ssize_t result;
+ int fd;
+
+ if (condition & (G_IO_NVAL | G_IO_ERR | G_IO_HUP)) {
+ g_main_loop_quit(main_loop);
+ return FALSE;
+ }
+
+ fd = g_io_channel_unix_get_fd(channel);
+
+ result = read(fd, &si, sizeof(si));
+ if (result != sizeof(si))
+ return FALSE;
+
+ switch (si.ssi_signo) {
+ case SIGINT:
+ rl_replace_line("", 0);
+ rl_crlf();
+ rl_on_new_line();
+ rl_redisplay();
+ break;
+ case SIGTERM:
+ if (__terminated == 0) {
+ rl_replace_line("", 0);
+ rl_crlf();
+ g_main_loop_quit(main_loop);
+ }
+
+ __terminated = 1;
+ break;
+ }
+
+ return TRUE;
+}
+
+static guint setup_signalfd(void)
+{
+ GIOChannel *channel;
+ guint source;
+ sigset_t mask;
+ int fd;
+
+ sigemptyset(&mask);
+ sigaddset(&mask, SIGINT);
+ sigaddset(&mask, SIGTERM);
+
+ if (sigprocmask(SIG_BLOCK, &mask, NULL) < 0) {
+ perror("Failed to set signal mask");
+ return 0;
+ }
+
+ fd = signalfd(-1, &mask, 0);
+ if (fd < 0) {
+ perror("Failed to create signal descriptor");
+ return 0;
+ }
+
+ channel = g_io_channel_unix_new(fd);
+
+ g_io_channel_set_close_on_unref(channel, TRUE);
+ g_io_channel_set_encoding(channel, NULL, NULL);
+ g_io_channel_set_buffered(channel, FALSE);
+
+ source = g_io_add_watch(channel,
+ G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
+ signal_handler, NULL);
+
+ g_io_channel_unref(channel);
+
+ return source;
+}
+
+static gboolean input_handler(GIOChannel *channel, GIOCondition condition,
+ gpointer user_data)
+{
+ if (condition & (G_IO_HUP | G_IO_ERR | G_IO_NVAL)) {
+ g_main_loop_quit(main_loop);
+ return FALSE;
+ }
+
+ rl_callback_read_char();
+ return TRUE;
+}
+
+static guint setup_standard_input(void)
+{
+ GIOChannel *channel;
+ guint source;
+
+ channel = g_io_channel_unix_new(fileno(stdin));
+
+ source = g_io_add_watch(channel,
+ G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
+ input_handler, NULL);
+
+ g_io_channel_unref(channel);
+
+ return source;
+}
+
int main(int argc, char *argv[])
{
+ GOptionContext *context;
+ GError *error = NULL;
+ GDBusClient *client;
+ guint signal, input;
+
+ context = g_option_context_new(NULL);
+ g_option_context_add_main_entries(context, options, NULL);
+
+ if (g_option_context_parse(context, &argc, &argv, &error) == FALSE) {
+ if (error != NULL) {
+ g_printerr("%s\n", error->message);
+ g_error_free(error);
+ } else
+ g_printerr("An unknown error occurred\n");
+ exit(1);
+ }
+
+ g_option_context_free(context);
+
+ if (option_version == TRUE) {
+ printf("%s\n", VERSION);
+ exit(0);
+ }
+
+ main_loop = g_main_loop_new(NULL, FALSE);
+ dbus_conn = g_dbus_setup_bus(DBUS_BUS_SYSTEM, NULL, NULL);
+
+ rl_attempted_completion_function = cmd_completion;
+
+ rl_erase_empty_line = 1;
+ rl_callback_handler_install(NULL, rl_handler);
+
+ rl_set_prompt(PROMPT_OFF);
+ rl_redisplay();
+
+ input = setup_standard_input();
+ signal = setup_signalfd();
+ client = g_dbus_client_new(dbus_conn, "org.bluez", "/org/bluez");
+
+ g_dbus_client_set_connect_watch(client, connect_handler, NULL);
+ g_dbus_client_set_disconnect_watch(client, disconnect_handler, NULL);
+
+ g_main_loop_run(main_loop);
+
+ g_dbus_client_unref(client);
+ g_source_remove(signal);
+ g_source_remove(input);
+
+ rl_message("");
+ rl_callback_handler_remove();
+
+ dbus_connection_unref(dbus_conn);
+ g_main_loop_unref(main_loop);
+
return 0;
}
--
1.8.1.4
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