一个最简单的CLI命令行界面实现

来源：互联网发布：域名可以用来干什么编辑：程序博客网时间：2024/05/22 22:15
#include "system.h"#include "utils/ui.h"#include "appl/cli.h"/*cli命令行界面，一共可以注册MAX_CLI_COMMANDS 个命令，命令名字可以是[A-Z,a-z,0-9]的某个字母。运行效果：CMD> F - Flash utilities  f - Write factory mac address  n - Write the serial number  d - Dump the mac address and serial numberEnter your choice: fMac: 00-22-44-66-88-00*/#if CFG_CLI_ENABLED#define MAX_CLI_COMMANDS        (26+26+10)  /* Lower + upper + digit *//* Commands forward */APISTATIC void cli_cmd_list_commands(CLI_CMD_OP op) REENTRANT;APISTATIC void cli_cmd_command_help(CLI_CMD_OP op) REENTRANT;extern void APIFUNC(cli_init)(void) REENTRANT;/*  * Command list  * * Note: We use STATIC initializer because commands could be added during *       system initialization phase. */STATIC CLI_CMD_FUNC cmds[MAX_CLI_COMMANDS]; //命令列表/*查找所有已添加命令并执行命令描述*/APISTATIC voidAPIFUNC(cli_cmd_list_commands)(CLI_CMD_OP op) REENTRANT{    if (op == CLI_CMD_OP_HELP) {        sal_printf("Help - List all available commands\n");    } else if (op == CLI_CMD_OP_DESC) {        sal_printf("List all commands");    } else {        uint8 i;        CLI_CMD_FUNC *pcmd = &cmds[0];        for(i=0; i<MAX_CLI_COMMANDS; i++, pcmd++) {            if (*pcmd) {                char c = i < 26 ?                     ('a' + i) : (i < 52? ('A' + i - 26) : '0' + i - 52);                sal_printf("  %c - ", c);                (*(*pcmd))(CLI_CMD_OP_DESC);                sal_printf("\n");            }        }    }}/*查找所有已添加命令并执行命令帮助*/APISTATIC voidAPIFUNC(cli_cmd_command_help)(CLI_CMD_OP op) REENTRANT{    if (op == CLI_CMD_OP_HELP) {        sal_printf("Help - Show help information for a command\n");    } else if (op == CLI_CMD_OP_DESC) {        sal_printf("Help for a command");    } else {        char cmd;        CLI_CMD_FUNC *pcmd;        sal_printf("Command: ");        cmd = sal_getchar();        sal_printf("\n");        if (cmd >= 'a' && cmd <= 'z') {            pcmd = &cmds[cmd - 'a'];        } else if (cmd >= 'A' && cmd <= 'Z') {            pcmd = &cmds[26 + cmd - 'A'];        } else if (cmd >= '0' && cmd <= '9') {            pcmd = &cmds[52 + cmd - '0'];        } else if (cmd == '\r' || cmd == '\n') {            return;        } else {            sal_printf("Invalid command\n");            return;        }                if (*pcmd == NULL) {            sal_printf("Command not available\n");            return;        }        sal_printf("\n");        (*(*pcmd))(CLI_CMD_OP_HELP);    }}/*cli任务，用于跟用户交互*/voidAPIFUNC(cli)(void) REENTRANT{    for(;;) {        char cmd;        CLI_CMD_FUNC *pcmd;        sal_printf("\n" CFG_CLI_PROMPT);//打印”CMD> ”字符串        cmd = sal_getchar();//获取用户输入命令        if (cmd >= 'a' && cmd <= 'z') {            pcmd = &cmds[cmd - 'a'];        } else if (cmd >= 'A' && cmd <= 'Z') {            pcmd = &cmds[26 + cmd - 'A'];        } else if (cmd >= '0' && cmd <= '9') {            pcmd = &cmds[52 + cmd - '0'];        } else if (cmd == UI_KB_LF || cmd == UI_KB_ESC ||                   cmd == UI_KB_BS || cmd == UI_KB_CR) {            ui_backspace();            sal_putchar('\n');            continue;        } else {            sal_printf("\nInvalid command\n");            continue;        }                if (*pcmd == NULL) {            sal_printf("\nCommand not available\n");            continue;        }/*执行命令*/        sal_printf(" - ");        (*(*pcmd))(CLI_CMD_OP_DESC);        sal_printf("\n");        (*(*pcmd))(CLI_CMD_OP_EXEC);    }}/*添加注册命令*/BOOLAPIFUNC(cli_add_cmd)(char cmd, CLI_CMD_FUNC func) REENTRANT{    CLI_CMD_FUNC *pcmd = NULL;        SAL_ASSERT(func);    if (func == NULL) {        return FALSE;    }        if (cmd >= 'a' && cmd <= 'z') {        pcmd = &cmds[cmd - 'a'];    } else if (cmd >= 'A' && cmd <= 'Z') {        pcmd = &cmds[26 + cmd - 'A'];    } else if (cmd >= '0' && cmd <= '9') {        pcmd = &cmds[52 + cmd - '0'];    } else {        SAL_ASSERT(FALSE);        return FALSE;    }        SAL_ASSERT(*pcmd == NULL);    if (*pcmd != NULL) {        return FALSE;    }        *pcmd = func;    return TRUE;}/*移除注册命令*/voidAPIFUNC(cli_remove_cmd)(char cmd) REENTRANT{    CLI_CMD_FUNC *pcmd = NULL;        if (cmd >= 'a' && cmd <= 'z') {        pcmd = &cmds[cmd - 'a'];    } else if (cmd >= 'A' && cmd <= 'Z') {        pcmd = &cmds[26 + cmd - 'A'];    } else if (cmd >= '0' && cmd <= '9') {        pcmd = &cmds[52 + cmd - '0'];    } else {        SAL_ASSERT(FALSE);        return;    }        *pcmd = NULL;}/*CLI初始化*/voidAPIFUNC(cli_init)(void) REENTRANT{    uint8 i;    for(i=0; i<MAX_CLI_COMMANDS; i++) {        cmds[i] = NULL;    }   /*注册2个默认命令*/cli_add_cmd('h', cli_cmd_list_commands);    cli_add_cmd('H', cli_cmd_command_help);}#endif /* CFG_CLI_ENABLED */
0 0