From patchwork Tue Aug 27 12:38:24 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wayne Xia X-Patchwork-Id: 270123 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 77DBA2C0079 for ; Tue, 27 Aug 2013 23:15:02 +1000 (EST) Received: from localhost ([::1]:56196 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VEIdl-00051l-2w for incoming@patchwork.ozlabs.org; Tue, 27 Aug 2013 08:44:57 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38873) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VEIa4-0007l1-S4 for qemu-devel@nongnu.org; Tue, 27 Aug 2013 08:41:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VEIZv-0000WW-UL for qemu-devel@nongnu.org; Tue, 27 Aug 2013 08:41:08 -0400 Received: from e23smtp09.au.ibm.com ([202.81.31.142]:38799) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VEIZv-0000WE-Am for qemu-devel@nongnu.org; Tue, 27 Aug 2013 08:40:59 -0400 Received: from /spool/local by e23smtp09.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Wed, 28 Aug 2013 09:35:03 +1000 Received: from d23relay04.au.ibm.com (d23relay04.au.ibm.com [9.190.234.120]) by d23dlp01.au.ibm.com (Postfix) with ESMTP id B234D2CE804C for ; Tue, 27 Aug 2013 22:40:54 +1000 (EST) Received: from d23av01.au.ibm.com (d23av01.au.ibm.com [9.190.234.96]) by d23relay04.au.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r7RCOnLs61145340 for ; Tue, 27 Aug 2013 22:24:49 +1000 Received: from d23av01.au.ibm.com (localhost [127.0.0.1]) by d23av01.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id r7RCesRC032037 for ; Tue, 27 Aug 2013 22:40:54 +1000 Received: from RH63Wenchao.localdomain ([9.77.176.7]) by d23av01.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id r7RCc3n8029119; Tue, 27 Aug 2013 22:40:51 +1000 From: Wenchao Xia To: qemu-devel@nongnu.org Date: Tue, 27 Aug 2013 20:38:24 +0800 Message-Id: <1377607107-11612-13-git-send-email-xiawenc@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1377607107-11612-1-git-send-email-xiawenc@linux.vnet.ibm.com> References: <1377607107-11612-1-git-send-email-xiawenc@linux.vnet.ibm.com> X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13082723-3568-0000-0000-00000424FF37 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 202.81.31.142 Cc: Wenchao Xia , armbru@redhat.com, lcapitulino@redhat.com Subject: [Qemu-devel] [PATCH V10 12/15] 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 c8855d2..9d1b0cb 100644 --- a/monitor.c +++ b/monitor.c @@ -4229,34 +4229,17 @@ 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) @@ -4264,18 +4247,18 @@ 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); @@ -4320,7 +4303,7 @@ 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); } } @@ -4329,6 +4312,36 @@ 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);