From 6efcc38a8521a17074626456cda67e7d35f2b7c5 Mon Sep 17 00:00:00 2001
From: Benjamin Franzke <benjaminfranzke@googlemail.com>
Date: Fri, 23 Sep 2011 14:59:45 +0200
Subject: Add a command interface

Also add two simple commands: help and ls
---
 src/Makefile.am |  6 ++++--
 src/cmumble.c   |  1 +
 src/cmumble.h   |  3 +++
 src/commands.c  | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/commands.h  | 15 +++++++++++++++
 src/io.c        | 18 +++++++++--------
 6 files changed, 93 insertions(+), 10 deletions(-)
 create mode 100644 src/commands.c
 create mode 100644 src/commands.h

diff --git a/src/Makefile.am b/src/Makefile.am
index 3dec946..40d19e8 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,9 +1,11 @@
 bin_PROGRAMS = cmumble
 
-noinst_HEADERS = cmumble.h message.h varint.h io.h connection.h audio.h
+noinst_HEADERS = cmumble.h message.h varint.h io.h \
+		 connection.h audio.h commands.h
 nodist_noinst_HEADERS = mumble.pb-c.h message_list.h
 
-cmumble_SOURCES = cmumble.c message.c varint.c io.c connection.c audio.c
+cmumble_SOURCES = cmumble.c message.c varint.c io.c \
+		  connection.c audio.c commands.c
 nodist_cmumble_SOURCES = mumble.pb-c.c
 
 cmumble_LDADD = $(PROTOBUF_LIBS) $(GLIB_LIBS) $(GIO_LIBS) \
diff --git a/src/cmumble.c b/src/cmumble.c
index 33ba9d4..d56256b 100644
--- a/src/cmumble.c
+++ b/src/cmumble.c
@@ -207,6 +207,7 @@ int main(int argc, char **argv)
 	ctx.loop = g_main_loop_new(NULL, FALSE);
 	ctx.callbacks = (const callback_t *) &callbacks;
 
+	cmumble_commands_init(&ctx);
 	if (cmumble_connection_init(&ctx, host, port) < 0)
 		return 1;
 
diff --git a/src/cmumble.h b/src/cmumble.h
index 2ea1203..63b332a 100644
--- a/src/cmumble.h
+++ b/src/cmumble.h
@@ -10,6 +10,7 @@
 #include "io.h"
 #include "connection.h"
 #include "audio.h"
+#include "commands.h"
 
 typedef void (*callback_t)(ProtobufCMessage *msg, struct context *);
 
@@ -18,6 +19,8 @@ struct context {
 	struct cmumble_io io;
 	struct cmumble_audio audio;
 	const callback_t *callbacks;
+	const struct cmumble_command *commands;
+
 	GMainLoop *loop;
 
 	uint32_t session;
diff --git a/src/commands.c b/src/commands.c
new file mode 100644
index 0000000..be78a69
--- /dev/null
+++ b/src/commands.c
@@ -0,0 +1,60 @@
+#include "../config.h"
+#include "commands.h"
+#include "cmumble.h"
+
+#include <glib.h>
+
+#include <readline/readline.h>
+#include <readline/history.h>
+
+static void
+list_users(struct context *ctx)
+{
+	struct user *user = NULL;
+	GList *l;
+
+	for (l = ctx->users; l; l = l->next) {
+		user = l->data;
+
+		g_print("%4d: %s\n", user->user_id, user->name);
+	}
+}
+
+static void
+quit(struct context *ctx)
+{
+	rl_already_prompted = 1;
+	g_main_loop_quit(ctx->loop);
+}
+
+static void
+clear(struct context *ctx)
+{
+	rl_clear_screen(0,0);
+	rl_reset_line_state();
+	g_print("\n");
+}
+
+static void
+help(struct context *ctx)
+{
+	int i;
+
+	for (i = 0; ctx->commands[i].name; ++i)
+		g_print("%s\t%s\n",
+			ctx->commands[i].name, ctx->commands[i].description);
+}
+
+static const struct cmumble_command commands[] = {
+	{ "ls", list_users, "list users" },
+	{ "clear", clear, "clear screen" },
+	{ "help", help, "show this help" },
+	{ "quit", quit, "quit " PACKAGE },
+	{ NULL, NULL , NULL}
+};
+
+void
+cmumble_commands_init(struct context *ctx)
+{
+	ctx->commands = commands;
+}
diff --git a/src/commands.h b/src/commands.h
new file mode 100644
index 0000000..2b1ad66
--- /dev/null
+++ b/src/commands.h
@@ -0,0 +1,15 @@
+#ifndef _COMMANDS_H_
+#define _COMMANDS_H_
+
+struct context;
+
+struct cmumble_command {
+	const char *name;
+	void (*callback)(struct context *);
+	const char *description;
+};
+
+void
+cmumble_commands_init(struct context *ctx);
+
+#endif /* _COMMANDS_H_ */
diff --git a/src/io.c b/src/io.c
index ff7db5a..33d1232 100644
--- a/src/io.c
+++ b/src/io.c
@@ -66,6 +66,7 @@ static void
 process_line(char *line)
 {
 	struct context *ctx = global_rl_user_data;
+	int i;
 
 	g_assert(global_rl_user_data);
 
@@ -79,14 +80,15 @@ process_line(char *line)
 		return;
 	}
 
-	if (strcmp(line, "quit") == 0) {
-		rl_already_prompted = 1;
-		g_main_loop_quit(ctx->loop);
-	} else if (strcmp(line, "clear") == 0) {
-		rl_clear_screen(0,0);
-		rl_reset_line_state();
-	} else
-		g_print("readline: %s\n", line);
+	for (i = 0; ctx->commands[i].name; ++i) {
+		if (strcmp(line, ctx->commands[i].name) == 0) {
+			ctx->commands[i].callback(ctx);
+			break;
+		}
+	}
+
+	if (ctx->commands[i].name == NULL)
+		g_print("Unknown command: %s\n", line);
 
 	if (strlen(line))
 		add_history(line);
-- 
cgit