类似 uboot 菜单的 c 应用程序

robe.zhang · 发表于 2018-9-4 17:40:23

本帖最后由 robe.zhang 于 2018-9-4 17:53 编辑

核心代码不到 200 行，整个程序不到 400 行代码，模块化编写，很容易扩展功能，很容易扩展菜单选项，从 uboot 源码和 kernel 驱动，学的框架，先看运行效果：

源码：

/*============================ h 头文件，全局变量，结构体，枚举类型 */
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<unistd.h>
#define CHAR_SIZE 0x80
#define MENU_SIZE array_size()
#define MODULE_ITEM(item_x,menu,type_x,fn_x) \
item_type item_x={ \
.name=menu, \
.type=type_x, \
.fn_cmd=fn_x, \
};
char input[CHAR_SIZE];
int error_info;
volatile int menu_color=37;
volatile int menu_bg_color=40;
typedef struct item{
char name[CHAR_SIZE];
int type;
int (*fn_cmd)(void);
}item_type;
enum type{
e_menu,
e_item,
e_max,
};
/* =============================================== 菜单项
* 增加，删除菜单项方法：
* 1，实现功能函数，并使用MODULE_ITEM声明一个菜单项
* int fn_a(void)
* {
* printf("sleeping......\n");
* sleep(1);
* printf("sucessed!\n");
* return 0;
* }
* MODULE_ITEM(item_a,"a: delay 1 sec.",e_item,fn_a)
* 2，把菜单项(item_a)添加到第 240 行的 menu 列表中。
* item_type *menu[]={
* &item_a,
* &item_b,
* }
*/
int fn_a(void)
{
printf("sleeping......\n");
sleep(1);
printf("sucessed!\n");
return 0;
}
MODULE_ITEM(item_a,"a: delay 1 sec.",e_item,fn_a)
int fn_b(void)
{
printf("hello,world.\n");
return 0;
}
MODULE_ITEM(item_b,"b: print "hello,world!"",e_item,fn_b)
int fn_c(void)
{
printf("beep......\n");
system("echo -n "\a" ");
return 0;
}
MODULE_ITEM(item_c,"c: beep",e_item,fn_c)
int fn_d(void)
{
system("echo "\e[32m hello linux!\e[0m"");
return 0;
}
MODULE_ITEM(item_d,"d: print green font",e_item,fn_d)
int fn_e(void)
{
system("echo "\e[33m hello linux!\e[0m"");
return 0;
}
MODULE_ITEM(item_e,"e: print yellow font",e_item,fn_e)
int fn_f(void)
{
system("echo "\e[34m hello linux!\e[0m"");
return 0;
}
MODULE_ITEM(item_f,"f: print blue font",e_item,fn_f)
int fn_g(void)
{
system("echo "\e[35m hello linux!\e[0m"");
return 0;
}
MODULE_ITEM(item_g,"g: print 紫色 font",e_item,fn_g)
int fn_h(void)
{
system("echo "\e[36m hello linux!\e[0m"");
return 0;
}
MODULE_ITEM(item_h,"h: print 青色 font",e_item,fn_h)
int fn_i(void)
{
menu_color=31;
return 0;
}
MODULE_ITEM(item_i,"i: change menu font color to red",e_item,fn_i)
int fn_j(void)
{
menu_color=32;
return 0;
}
MODULE_ITEM(item_j,"j: change menu font color to green",e_item,fn_j)
int fn_k(void)
{
menu_color=33;
return 0;
}
MODULE_ITEM(item_k,"k: change menu font color to yellow",e_item,fn_k)
int fn_l(void)
{
menu_color=34;
return 0;
}
MODULE_ITEM(item_l,"l: change menu font color to blue",e_item,fn_l)
int fn_m(void)
{
menu_color=35;
return 0;
}
MODULE_ITEM(item_m,"m: change menu font color to 紫色",e_item,fn_m)
int fn_n(void)
{
menu_color=36;
return 0;
}
MODULE_ITEM(item_n,"n: change menu font color to 青色",e_item,fn_n)
int fn_o(void)
{
menu_color=30;
return 0;
}
MODULE_ITEM(item_o,"o: change menu font color to black",e_item,fn_o)
int fn_p(void)
{
menu_color=37;
return 0;
}
MODULE_ITEM(item_p,"p: change menu font color to default",e_item,fn_p)
int fn_q(void)
{
menu_bg_color=41;
return 0;
}
MODULE_ITEM(item_q,"q: change menu background color to red",e_item,fn_q)
int fn_r(void)
{
menu_bg_color=42;
return 0;
}
MODULE_ITEM(item_r,"r: change menu background color to green",e_item,fn_r)
int fn_s(void)
{
menu_bg_color=43;
return 0;
}
MODULE_ITEM(item_s,"s: change menu background color to yellow",e_item,fn_s)
int fn_t(void)
{
menu_bg_color=44;
return 0;
}
MODULE_ITEM(item_t,"t: change menu background color to blue",e_item,fn_t)
int fn_u(void)
{
menu_bg_color=45;
return 0;
}
MODULE_ITEM(item_u,"u: change menu background color to 紫色",e_item,fn_u)
int fn_v(void)
{
menu_bg_color=46;
return 0;
}
MODULE_ITEM(item_v,"v: change menu background color to 青色",e_item,fn_v)
int fn_w(void)
{
menu_bg_color=47;
return 0;
}
MODULE_ITEM(item_w,"w: change menu background color to black",e_item,fn_w)
int fn_x(void)
{
exit(0);
return 0;
}
MODULE_ITEM(item_x,"x: exit.",e_item,fn_x)
int fn_y(void)
{
menu_bg_color=40;
menu_color=37;
return 0;
}
MODULE_ITEM(item_y,"y: reset menu color to default",e_item,fn_y)
int fn_z(void)
{
printf("this project is the demo for uboot code arch.\n");
printf(" build by Robe 2018.9.4 \n");
return 0;
}
MODULE_ITEM(item_z,"z: print project info.",e_item,fn_z)
/* ==============================================菜单列表 */
item_type *menu[]={
&item_a,
&item_b,
&item_c,
&item_d,
&item_e,
&item_f,
&item_g,
&item_h,
&item_i,
&item_j,
&item_k,
&item_l,
&item_m,
&item_n,
&item_o,
&item_p,
&item_q,
&item_r,
&item_s,
&item_t,
&item_u,
&item_v,
&item_w,
&item_x,
&item_y,
&item_z,
NULL,
};
/*=====================================================main */
int array_size(void)
{
int i;
for(i=0;;i++)
if (menu[i]==NULL) break;
return i;
}
int init(void)
{
error_info=1;
memset(input,0,CHAR_SIZE);
}
int list_menu(void)
{
printf("\033[0;%d;%dm",menu_color,menu_bg_color);
system("clear");
printf("============ MENU: by Robe @2018.9.4 ==========\n");
for(int i=0;i<MENU_SIZE;i++)
{
printf("%s \n",menu[i]->name);
}
printf("===============================================");
printf("\033[0;0m\n");
}
int input_selection(void)
{
printf("please select the item: ");
scanf("%s",input);
}
int action(void)
{
for(int i=0;i<MENU_SIZE;i++)
{
if(input[0]==menu[i]->name[0])
{
menu[i]->fn_cmd();
error_info=0;
}
}
printf("\n");
if (error_info==1)
{
printf("error: canot find your select item \n");
system("echo "\a"");
}
}
int after_action(void)
{
usleep(1000000);
}
int main(void)
{
while(1)
{
init();
list_menu();
input_selection();
action();
after_action();
}
return 0;
}

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