shell_shellcmd.c 文件参考

浏览源代码.

函数
UINT32	OsShellCmdHelp (UINT32 argc, const CHAR **argv)
	SHELLCMD_ENTRY (help_shellcmd, CMD_TYPE_EX, "help", 0,(CmdCallBackFunc) OsShellCmdHelp)

函数说明

OsShellCmdHelp()

UINT32 OsShellCmdHelp	(	UINT32	argc,
		const CHAR **	argv
	)

在文件 shell_shellcmd.c 第 51 行定义.

{
    UINT32 loop = 0;
    CmdItemNode *curCmdItem = NULL;
    CmdModInfo *cmdInfo = OsCmdInfoGet();
 
    (VOID)argv;
    if (argc > 0) {
        PRINTK("\nUsage: help\n");
        return OS_ERROR;
    }
 
    PRINTK("*******************shell commands:*************************\n");
    LOS_DL_LIST_FOR_EACH_ENTRY(curCmdItem, &(cmdInfo->cmdList.list), CmdItemNode, list) {//遍历命令链表
        if ((loop % CMD_ITEM_PER_LINE) == 0) { /* just align print */
            PRINTK("\n");
        }
        PRINTK("%-12s ", curCmdItem->cmd->cmdKey);
 
        loop++;
    }
    PRINTK("\n\nAfter shell prompt \"OHOS # \":\n"
           "Use `<cmd> [args ...]` to run built-in shell commands listed above.\n"
           "Use `exec <cmd> [args ...]` or `./<cmd> [args ...]` to run external commands.\n");
    return 0;
}

函数调用图:

SHELLCMD_ENTRY()

SHELLCMD_ENTRY	(	help_shellcmd	,
		CMD_TYPE_EX	,
		"help"	,
		0	,
		(CmdCallBackFunc)	OsShellCmdHelp
	)