shell.c

#include "shell.h"
#include <stddef.h>
#include "clib.h"
#include <string.h>
#include "fio.h"
#include "filesystem.h"

#include "FreeRTOS.h"
#include "task.h"
#include "host.h"

typedef struct {
	const char *name;
	cmdfunc *fptr;
	const char *desc;
} cmdlist;

void ls_command(int, char **);
void man_command(int, char **);
void cat_command(int, char **);
void ps_command(int, char **);
void host_command(int, char **);
void help_command(int, char **);
void host_command(int, char **);
void mmtest_command(int, char **);

#define MKCL(n, d) {.name=#n, .fptr=n ## _command, .desc=d}

cmdlist cl[]={
	MKCL(ls, "List directory"),
	MKCL(man, "Show the manual of the command"),
	MKCL(cat, "Concatenate files and print on the stdout"),
	MKCL(ps, "Report a snapshot of the current processes"),
	MKCL(host, "Run command on host"),
	MKCL(mmtest, "heap memory allocation test"),
	MKCL(help, "help")
};

int parse_command(char *str, char *argv[]){
	int b_quote=0, b_dbquote=0;
	int i;
	int count=0, p=0;
	for(i=0; str[i]; ++i){
		if(str[i]=='\'')
			++b_quote;
		if(str[i]=='"')
			++b_dbquote;
		if(str[i]==' '&&b_quote%2==0&&b_dbquote%2==0){
			str[i]='\0';
			argv[count++]=&str[p];
			p=i+1;
		}
	}
	/* last one */
	argv[count++]=&str[p];

	return count;
}

void ls_command(int n, char *argv[]){

}

int filedump(const char *filename){
	char buf[128];

	int fd=fs_open(filename, 0, O_RDONLY);

	if(fd==OPENFAIL)
		return 0;

	fio_printf(1, "\r\n");

	int count;
	while((count=fio_read(fd, buf, sizeof(buf)))>0){
		fio_write(1, buf, count);
	}

	fio_close(fd);
	return 1;
}

void ps_command(int n, char *argv[]){
	signed char buf[1024];
	vTaskList(buf);
	fio_printf(1, "\r\n%s\r\n", buf);	
}

void cat_command(int n, char *argv[]){
	if(n==1){
		fio_printf(2, "\r\nUsage: cat <filename>\r\n");
		return;
	}

	if(!filedump(argv[1]))
		fio_printf(2, "\r\n%s no such file or directory.\r\n", argv[1]);
}

void man_command(int n, char *argv[]){
	if(n==1){
		fio_printf(2, "\r\nUsage: man <command>\r\n");
		return;
	}

	char buf[128]="/romfs/manual/";
	strcat(buf, argv[1]);

	if(!filedump(buf))
		fio_printf(2, "\r\nManual not available.\r\n");
}

void host_command(int n, char *argv[]){
	if(n>1){
		int len=strlen(argv[1]), rnt;
		if(argv[1][0]=='\''){
			argv[1][len-1]='\0';
			rnt=host_system(argv[1]+1);
		}else
			rnt=host_system(argv[1]);
		fio_printf(1, "\r\nfinish with exit code %d.\r\n", rnt);
	}else
		fio_printf(2, "\r\nUsage: host 'command'\r\n");
}

void help_command(int n,char *argv[]){
	int i;
	fio_printf(1, "\r\n");
	for(i=0;i<sizeof(cl)/sizeof(cl[0]); ++i){
		fio_printf(1, "%s - %s\r\n", cl[i].name, cl[i].desc);
	}
}

cmdfunc *do_command(const char *cmd){

	int i;

	for(i=0; i<sizeof(cl)/sizeof(cl[0]); ++i){
		if(strcmp(cl[i].name, cmd)==0)
			return cl[i].fptr;
	}
	return NULL;	
}