017d8163ea
fix: shell支持exit退出，完善帮助信息，特殊处理不可见字符 Change-Id: Ia6dbff0faed4ec73fcf35691676f1acb2b8df78d Signed-off-by: huangshan <huangshan9@huawei.com>
65 lines
2.7 KiB
C
65 lines
2.7 KiB
C
/*
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* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
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* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "shcmd.h"
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#define DEFAULT_SCREEN_WIDTH 80
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#define MAX_CMD_KEY_WIDTH 12
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#define CMD_ITEM_PER_LINE (DEFAULT_SCREEN_WIDTH / (MAX_CMD_KEY_WIDTH + 1))
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UINT32 OsShellCmdHelp(UINT32 argc, const CHAR **argv)
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{
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UINT32 loop = 0;
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CmdItemNode *curCmdItem = NULL;
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CmdModInfo *cmdInfo = OsCmdInfoGet();
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(VOID)argv;
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if (argc > 0) {
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PRINTK("\nUsage: help\n");
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return OS_ERROR;
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}
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PRINTK("*******************shell commands:*************************\n");
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LOS_DL_LIST_FOR_EACH_ENTRY(curCmdItem, &(cmdInfo->cmdList.list), CmdItemNode, list) {
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if ((loop % CMD_ITEM_PER_LINE) == 0) { /* just align print */
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PRINTK("\n");
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}
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PRINTK("%-12s ", curCmdItem->cmd->cmdKey);
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loop++;
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}
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PRINTK("\n\nAfter shell prompt \"OHOS # \":\n"
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"Use `<cmd> [args ...]` to run built-in shell commands listed above.\n"
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"Use `exec <cmd> [args ...]` or `./<cmd> [args ...]` to run external commands.\n");
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return 0;
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}
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SHELLCMD_ENTRY(help_shellcmd, CMD_TYPE_EX, "help", 0, (CmdCallBackFunc)OsShellCmdHelp); |