From patchwork Fri Jul 26 03:20:39 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wayne Xia X-Patchwork-Id: 262036 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 161E62C00FD for ; Fri, 26 Jul 2013 13:26:20 +1000 (EST) Received: from localhost ([::1]:33113 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V2YfZ-0005jk-W7 for incoming@patchwork.ozlabs.org; Thu, 25 Jul 2013 23:26:18 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38413) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V2Ycl-0001th-49 for qemu-devel@nongnu.org; Thu, 25 Jul 2013 23:23:24 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1V2Ycj-0005t0-Q9 for qemu-devel@nongnu.org; Thu, 25 Jul 2013 23:23:23 -0400 Received: from e28smtp08.in.ibm.com ([122.248.162.8]:33779) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V2Ycj-0005sR-9n for qemu-devel@nongnu.org; Thu, 25 Jul 2013 23:23:21 -0400 Received: from /spool/local by e28smtp08.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Fri, 26 Jul 2013 08:43:22 +0530 Received: from d28relay04.in.ibm.com (d28relay04.in.ibm.com [9.184.220.61]) by d28dlp02.in.ibm.com (Postfix) with ESMTP id 6ADFE3940057 for ; Fri, 26 Jul 2013 08:53:12 +0530 (IST) Received: from d28av03.in.ibm.com (d28av03.in.ibm.com [9.184.220.65]) by d28relay04.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r6Q3NCrM37224568 for ; Fri, 26 Jul 2013 08:53:12 +0530 Received: from d28av03.in.ibm.com (loopback [127.0.0.1]) by d28av03.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r6Q3NFta021468 for ; Fri, 26 Jul 2013 13:23:15 +1000 Received: from RH63Wenchao (wenchaox.cn.ibm.com [9.115.122.121]) by d28av03.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id r6Q3L2KQ015277; Fri, 26 Jul 2013 13:23:14 +1000 From: Wenchao Xia To: qemu-devel@nongnu.org Date: Fri, 26 Jul 2013 11:20:39 +0800 Message-Id: <1374808842-11051-11-git-send-email-xiawenc@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1374808842-11051-1-git-send-email-xiawenc@linux.vnet.ibm.com> References: <1374808842-11051-1-git-send-email-xiawenc@linux.vnet.ibm.com> X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13072603-2000-0000-0000-00000D0AB099 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 122.248.162.8 Cc: pbonzini@redhat.com, Wenchao Xia , armbru@redhat.com, lcapitulino@redhat.com Subject: [Qemu-devel] [PATCH V8 10/13] monitor: refine monitor_find_completion() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org In order to support sub command in auto completion, a reentrant function is needed, so monitor_find_completion() is split into two parts. The first part does parsing of user input which need to be done only once, the second part does the auto completion job according to the parsing result, which contains the necessary code to support sub command and works as the reentrant function. The global "info_cmds" is still used in second part, which will be replaced by sub command code later. Signed-off-by: Wenchao Xia Reviewed-by: Eric Blake --- monitor.c | 65 ++++++++++++++++++++++++++++++++++++------------------------ 1 files changed, 39 insertions(+), 26 deletions(-) diff --git a/monitor.c b/monitor.c index 77df88d..9b4e9b4 100644 --- a/monitor.c +++ b/monitor.c @@ -4214,34 +4214,17 @@ static const char *next_arg_type(const char *typestr) return (p != NULL ? ++p : typestr); } -static void monitor_find_completion(Monitor *mon, - const char *cmdline) +static void monitor_find_completion_by_table(Monitor *mon, + const mon_cmd_t *cmd_table, + char **args, + int nb_args) { const char *cmdname; - char *args[MAX_ARGS]; - int nb_args, i, len; + int i; const char *ptype, *str; const mon_cmd_t *cmd; MonitorBlockComplete mbs; - if (parse_cmdline(cmdline, &nb_args, args) < 0) { - return; - } -#ifdef DEBUG_COMPLETION - for (i = 0; i < nb_args; i++) { - monitor_printf(mon, "arg%d = '%s'\n", i, args[i]); - } -#endif - - /* if the line ends with a space, it means we want to complete the - next arg */ - len = strlen(cmdline); - if (len > 0 && qemu_isspace(cmdline[len - 1])) { - if (nb_args >= MAX_ARGS) { - goto cleanup; - } - args[nb_args++] = g_strdup(""); - } if (nb_args <= 1) { /* command completion */ if (nb_args == 0) @@ -4249,18 +4232,18 @@ static void monitor_find_completion(Monitor *mon, else cmdname = args[0]; readline_set_completion_index(mon->rs, strlen(cmdname)); - for (cmd = mon->cmd_table; cmd->name != NULL; cmd++) { + for (cmd = cmd_table; cmd->name != NULL; cmd++) { cmd_completion(mon, cmdname, cmd->name); } } else { /* find the command */ - for (cmd = mon->cmd_table; cmd->name != NULL; cmd++) { + for (cmd = cmd_table; cmd->name != NULL; cmd++) { if (compare_cmd(args[0], cmd->name)) { break; } } if (!cmd->name) { - goto cleanup; + return; } ptype = next_arg_type(cmd->args_type); @@ -4305,7 +4288,7 @@ static void monitor_find_completion(Monitor *mon, } } else if (!strcmp(cmd->name, "help|?")) { readline_set_completion_index(mon->rs, strlen(str)); - for (cmd = mon->cmd_table; cmd->name != NULL; cmd++) { + for (cmd = cmd_table; cmd->name != NULL; cmd++) { cmd_completion(mon, str, cmd->name); } } @@ -4314,6 +4297,36 @@ static void monitor_find_completion(Monitor *mon, break; } } +} + +static void monitor_find_completion(Monitor *mon, + const char *cmdline) +{ + char *args[MAX_ARGS]; + int nb_args, len; + + /* 1. parse the cmdline */ + if (parse_cmdline(cmdline, &nb_args, args) < 0) { + return; + } +#ifdef DEBUG_COMPLETION + for (i = 0; i < nb_args; i++) { + monitor_printf(mon, "arg%d = '%s'\n", i, args[i]); + } +#endif + + /* if the line ends with a space, it means we want to complete the + next arg */ + len = strlen(cmdline); + if (len > 0 && qemu_isspace(cmdline[len - 1])) { + if (nb_args >= MAX_ARGS) { + goto cleanup; + } + args[nb_args++] = g_strdup(""); + } + + /* 2. auto complete according to args */ + monitor_find_completion_by_table(mon, mon->cmd_table, args, nb_args); cleanup: free_cmdline_args(args, nb_args);