Add core show channels count CLI command. (issue #8932 reported by mr_mehul_shah)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@52525 65c4cc65-6c06-0410-ace0-fbb531ad65f3

CHANGES

@@ -67,6 +67,7 @@ Changes since Asterisk 1.4-beta was branched:
   * Added the srvlookup option to iax.conf
   * Added 'E' and 'V' commands to ExternalIVR.
   * Added 'DBDel' and 'DBDelTree' manager commands.
+  * Added 'core show channels count' CLI command.
 
 SIP changes
 -----------

main/cli.c

@@ -458,19 +458,20 @@ static char *handle_chanlist(struct ast_cli_entry *e, int cmd, struct ast_cli_ar
 #define VERBOSE_FORMAT_STRING2 "%-20.20s %-20.20s %-16.16s %-4.4s %-7.7s %-12.12s %-25.25s %-15.15s %8.8s %-11.11s %-20.20s\n"
 
 	struct ast_channel *c = NULL;
-	int numchans = 0, concise = 0, verbose = 0;
+	int numchans = 0, concise = 0, verbose = 0, count = 0;
 	int fd, argc;
 	char **argv;
 
 	switch (cmd) {
 	case CLI_INIT:
-		e->command = "core show channels [concise|verbose]";
+		e->command = "core show channels [concise|verbose|count]";
 		e->usage =
-			"Usage: core show channels [concise|verbose]\n"
+			"Usage: core show channels [concise|verbose|count]\n"
 			"       Lists currently defined channels and some information about them. If\n"
 			"       'concise' is specified, the format is abridged and in a more easily\n"
 			"       machine parsable format. If 'verbose' is specified, the output includes\n"
-			"       more and longer fields.\n";
+			"       more and longer fields. If 'count' is specified only the channel and call\n"
+			"       count is output.\n";
 		return NULL;
 
 	case CLI_GENERATE:
@@ -485,21 +486,26 @@ static char *handle_chanlist(struct ast_cli_entry *e, int cmd, struct ast_cli_ar
 			concise = 1;
 		else if (!strcasecmp(argv[e->args-1],"verbose"))
 			verbose = 1;
+		else if (!strcasecmp(argv[e->args-1],"count"))
+			count = 1;
 		else
 			return CLI_SHOWUSAGE;
 	} else if (a->argc != e->args - 1)
 		return CLI_SHOWUSAGE;
 
+	if (!count) {
 		if (!concise && !verbose)
 			ast_cli(fd, FORMAT_STRING2, "Channel", "Location", "State", "Application(Data)");
 		else if (verbose)
 			ast_cli(fd, VERBOSE_FORMAT_STRING2, "Channel", "Context", "Extension", "Priority", "State", "Application", "Data", 
 				"CallerID", "Duration", "Accountcode", "BridgedTo");
+	}
 
 	while ((c = ast_channel_walk_locked(c)) != NULL) {
 		struct ast_channel *bc = ast_bridged_channel(c);
 		char durbuf[10] = "-";
 
+		if (!count) {
 			if ((concise || verbose)  && c->cdr && !ast_tvzero(c->cdr->start)) {
 				int duration = (int)(ast_tvdiff_ms(ast_tvnow(), c->cdr->start) / 1000);
 				if (verbose) {
@@ -538,6 +544,7 @@ static char *handle_chanlist(struct ast_cli_entry *e, int cmd, struct ast_cli_ar
 					snprintf(appdata, sizeof(appdata), "%s(%s)", c->appl, S_OR(c->data, ""));
 				ast_cli(fd, FORMAT_STRING, c->name, locbuf, ast_state2str(c->_state), appdata);
 			}
+		}
 		numchans++;
 		ast_channel_unlock(c);
 	}