From patchwork Tue May 28 15:27:28 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 246901 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 331F32C0099 for ; Wed, 29 May 2013 01:31:43 +1000 (EST) Received: from localhost ([::1]:55593 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UhLsD-00005i-7y for incoming@patchwork.ozlabs.org; Tue, 28 May 2013 11:31:41 -0400 Received: from eggs.gnu.org ([208.118.235.92]:41960) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UhLpZ-0004hn-L9 for qemu-devel@nongnu.org; Tue, 28 May 2013 11:29:03 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UhLpS-0007Xa-Et for qemu-devel@nongnu.org; Tue, 28 May 2013 11:28:57 -0400 Received: from mx1.redhat.com ([209.132.183.28]:10716) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UhLpS-0007XO-81 for qemu-devel@nongnu.org; Tue, 28 May 2013 11:28:50 -0400 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r4SFSnJ8017196 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Tue, 28 May 2013 11:28:49 -0400 Received: from dhcp-200-207.str.redhat.com (dhcp-192-246.str.redhat.com [10.33.192.246]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id r4SFSLx1012016; Tue, 28 May 2013 11:28:47 -0400 From: Kevin Wolf To: qemu-devel@nongnu.org Date: Tue, 28 May 2013 17:27:28 +0200 Message-Id: <1369754856-30036-9-git-send-email-kwolf@redhat.com> In-Reply-To: <1369754856-30036-1-git-send-email-kwolf@redhat.com> References: <1369754856-30036-1-git-send-email-kwolf@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.11 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: kwolf@redhat.com, pbonzini@redhat.com, stefanha@redhat.com, lcapitulino@redhat.com Subject: [Qemu-devel] [PATCH 08/16] qemu-io: Move 'help' function 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 No reason to treat it different from other commands. Move it to qemu-io-cmds.c, adapt the coding style and register it like any other command. Signed-off-by: Kevin Wolf Reviewed-by: Eric Blake --- cmd.c | 79 ---------------------------------------------------------- cmd.h | 1 - qemu-io-cmds.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++++- 3 files changed, 66 insertions(+), 81 deletions(-) diff --git a/cmd.c b/cmd.c index 7ae978f..2941ad3 100644 --- a/cmd.c +++ b/cmd.c @@ -439,82 +439,3 @@ quit_init(void) add_command(&quit_cmd); } - -/* from libxcmd/help.c */ - -static cmdinfo_t help_cmd; -static void help_onecmd(const char *cmd, const cmdinfo_t *ct); -static void help_oneline(const char *cmd, const cmdinfo_t *ct); - -static void -help_all(void) -{ - const cmdinfo_t *ct; - - for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) - help_oneline(ct->name, ct); - printf(_("\nUse 'help commandname' for extended help.\n")); -} - -static int -help_f( - BlockDriverState *bs, - int argc, - char **argv) -{ - const cmdinfo_t *ct; - - if (argc == 1) { - help_all(); - return 0; - } - ct = find_command(argv[1]); - if (ct == NULL) { - printf(_("command %s not found\n"), argv[1]); - return 0; - } - help_onecmd(argv[1], ct); - return 0; -} - -static void -help_onecmd( - const char *cmd, - const cmdinfo_t *ct) -{ - help_oneline(cmd, ct); - if (ct->help) - ct->help(); -} - -static void -help_oneline( - const char *cmd, - const cmdinfo_t *ct) -{ - if (cmd) - printf("%s ", cmd); - else { - printf("%s ", ct->name); - if (ct->altname) - printf("(or %s) ", ct->altname); - } - if (ct->args) - printf("%s ", ct->args); - printf("-- %s\n", ct->oneline); -} - -void -help_init(void) -{ - help_cmd.name = _("help"); - help_cmd.altname = _("?"); - help_cmd.cfunc = help_f; - help_cmd.argmin = 0; - help_cmd.argmax = 1; - help_cmd.flags = CMD_FLAG_GLOBAL; - help_cmd.args = _("[command]"); - help_cmd.oneline = _("help for one or all commands"); - - add_command(&help_cmd); -} diff --git a/cmd.h b/cmd.h index d676408..89e7c6e 100644 --- a/cmd.h +++ b/cmd.h @@ -42,7 +42,6 @@ typedef struct cmdinfo { extern cmdinfo_t *cmdtab; extern int ncmds; -void help_init(void); void quit_init(void); typedef int (*checkfunc_t)(BlockDriverState *bs, const cmdinfo_t *ci); diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c index bdfe5f2..e2d65d7 100644 --- a/qemu-io-cmds.c +++ b/qemu-io-cmds.c @@ -1795,6 +1795,71 @@ static const cmdinfo_t abort_cmd = { .oneline = "simulate a program crash using abort(3)", }; +static void help_oneline(const char *cmd, const cmdinfo_t *ct) +{ + if (cmd) { + printf("%s ", cmd); + } else { + printf("%s ", ct->name); + if (ct->altname) { + printf("(or %s) ", ct->altname); + } + } + + if (ct->args) { + printf("%s ", ct->args); + } + printf("-- %s\n", ct->oneline); +} + +static void help_onecmd(const char *cmd, const cmdinfo_t *ct) +{ + help_oneline(cmd, ct); + if (ct->help) { + ct->help(); + } +} + +static void help_all(void) +{ + const cmdinfo_t *ct; + + for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { + help_oneline(ct->name, ct); + } + printf("\nUse 'help commandname' for extended help.\n"); +} + +static int help_f(BlockDriverState *bs, int argc, char **argv) +{ + const cmdinfo_t *ct; + + if (argc == 1) { + help_all(); + return 0; + } + + ct = find_command(argv[1]); + if (ct == NULL) { + printf("command %s not found\n", argv[1]); + return 0; + } + + help_onecmd(argv[1], ct); + return 0; +} + +static const cmdinfo_t help_cmd = { + .name = "help", + .altname = "?", + .cfunc = help_f, + .argmin = 0, + .argmax = 1, + .flags = CMD_FLAG_GLOBAL, + .args = "[command]", + .oneline = "help for one or all commands", +}; + static int init_check_command(BlockDriverState *bs, const cmdinfo_t *ct) { if (ct->flags & CMD_FLAG_GLOBAL) { @@ -1834,7 +1899,7 @@ bool qemuio_command(const char *cmd) static void __attribute((constructor)) init_qemuio_commands(void) { /* initialize commands */ - help_init(); + add_command(&help_cmd); add_command(&read_cmd); add_command(&readv_cmd); add_command(&write_cmd);