📄 mysh.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>
#include <pwd.h>
#include <libgen.h>
#include <sys/types.h>
#include <dirent.h>
#include <sys/stat.h>
#include <time.h>
#include <errno.h>
#include <sys/times.h>
#include <pwd.h>
#include "do_welcom.h"
#include "do_ls.h"
#include "do_cat.h"
#include "do_mkdir.h"
#include "do_rm.h"
#include "do_cd.h"
#include "do_chmod.h"
#include "do_pwd.h"
#include "do_wc.h"
#include "do_date.h"
#include "do_clear.h"
#include "do_kill.h"
#include "do_who.h"
#include "do_exec.h"
char cmd[32]; //user cmd
char cmd_clone[32]; //clone cmd for case 11 : time
char cmd1[3]="ls";
char cmd2[5]="echo";
char cmd3[4]="cat";
char cmd4[6]="mkdir";
char cmd5[3]="rm";
char cmd6[3]="cd";
char cmd7[6]="chmod";
char cmd8[4]="pwd";
char cmd9[3]="wc";
char cmd10[5]="date";
char cmd11[5]="time";
char cmd12[5]="exit";
char cmd13[5]="help";
char cmd14[5]="kill";
char cmd15[4]="who";
char cmd16[8]="history";
char cmd17[11]="systeminfo";
char cmd18[6]="clear";
/*char* history1=NULL;char* history2=NULL;char* history3=NULL;
char* history4=NULL;char* history5=NULL;char* history6=NULL;
char* history7=NULL;char* history8=NULL;char* history9=NULL;*/
int i = 1; // counter of history
char* history[64];
char* tmp; // 第一个参数
char* tmp1; // 第二个
void print_prompt();
void get_input();
int parse_input();
int do_cmd(int para);
void savelist(int para);
//*********************************************************************************************************
int main(int argc, char **argv)
{
do_clear();
do_welcom();
do_clear();
while(1){
print_prompt();
get_input();
int cmdPara = parse_input();
int judge = do_cmd(cmdPara);
history[i++] = cmd_clone;
}
return 0;
}
//**********************************************************************************************
void print_prompt(){
printf("『 love Coral 』*^__^* ");
}
void get_input(){
//scanf("%[^\n]", cmd); //带空格的scanf 用法，但是，大爷的，不知为什么它总是在循环！！！
fflush( stdin ); // flush is compulsory for gets()
gets( cmd );
strcpy(cmd_clone , cmd);
}
int parse_input(){
//cmd is user command , cmd_main is fist part of cmd , cmd_para is second part
tmp = NULL; // global var , each time iniatail
tmp1= NULL;
char* cmd_para; // ptr token command seperete 大爷的，段错误～～～～
char *delim = " ";
char *cmd_main;
cmd_main = strtok(cmd, delim);
while((cmd_para = strtok(NULL, delim)) != NULL){
if(tmp==NULL) tmp = cmd_para;
else if(tmp1 == NULL) tmp1 = cmd_para;
}
if(!(strcmp(cmd_main,cmd1)))return 1;
if(!(strcmp(cmd_main,cmd2)))return 2;
if(!(strcmp(cmd_main,cmd3)))return 3;
if(!(strcmp(cmd_main,cmd4)))return 4;
if(!(strcmp(cmd_main,cmd5)))return 5;
if(!(strcmp(cmd_main,cmd6)))return 6;
if(!(strcmp(cmd_main,cmd7)))return 7;
if(!(strcmp(cmd_main,cmd8)))return 8;
if(!(strcmp(cmd_main,cmd9)))return 9;
if(!(strcmp(cmd_main,cmd10)))return 10;
if(!(strcmp(cmd_main,cmd11)))return 11;
if(!(strcmp(cmd_main,cmd12)))return 12;
if(!(strcmp(cmd_main,cmd13)))return 13;
if(!(strcmp(cmd_main,cmd14)))return 14;
if(!(strcmp(cmd_main,cmd15)))return 15;
if(!(strcmp(cmd_main,cmd16)))return 16;
if(!(strcmp(cmd_main,cmd17)))return 17;
if(!(strcmp(cmd_main,cmd18)))return 18;
if(do_exec(cmd))return 19;
return 0;
}
int do_cmd(int para){
char p[32] ; //用于time命令的 ,case 11
int j = 1; // for case 16
switch(para){
case 0:
printf("Error!Your command is not surpported by CORAL_SHELL.\n\n");
break;
case 1:
if(tmp){
if(!(strcmp(tmp,"-l"))) {
DIR * dir;
struct dirent * ptr;
struct passwd *user;
user = getpwuid(getuid());
dir =opendir(".");
while((ptr = readdir(dir))!=NULL){
struct stat buf;
stat (ptr->d_name,&buf);
printf("%d %d %s %d %d %s %s",
buf.st_mode, buf.st_nlink, user->pw_name, getuid(),
buf.st_size , ptr->d_name, asctime(localtime(&buf.st_mtime)));
}
closedir(dir);
}
else {
perror("Error: ls Parameter is invalid!");
return 1;
}
}
else do_ls();
break;
case 2:
if(tmp!=NULL)printf("%s\n",tmp);
else printf(" \n");
break;
case 3:
do_cat(tmp);
break;
case 4:
do_mkdir(tmp);
break;
case 5:
do_rm(tmp);
break;
case 6:
do_cd(tmp);
break;
case 7:
do_chmod(tmp,tmp1);
break;
case 8:
do_pwd();
break;
case 9:
do_wc(tmp,tmp1);
break;
case 10:
do_date();
break;
case 11: // deal with 'time'
if(tmp != NULL)
{
if(strcpy(cmd, strcpy(p ,cmd_clone+5 )) != NULL){
clock_t start,end ;
struct tms firtime, sectime ;
start = times(&firtime); //time began
do_cmd(parse_input());
end = times(§ime); //time up
double span = (double)(end - start)/(double)(sysconf(_SC_CLK_TCK));
printf("\nsystime [%fs]\n",span);
break;
}
}
printf("ERROR: Invalid command! Use 'help time' to lookout.\n");
break;
case 12:
do_clear();
exit(0);
break;
case 13:
if(tmp == NULL) printf("For details usage for commands ,input 'help [command]'\n[Example]: 'help' for all command \n or 'help pwd' for command pwd\n[CoralShell commands include]:\nls \necho \ncat \nmkdir \nrm \ncd \nchmod \npwd \nwc \ndate \nexit \nhelp \nkill \nwho \nhistory \nsysteminfo\nclear\n");
else if(!(strcmp(tmp, cmd1))) printf("usage: ls [-l]\n -l: for long message to output\n");
else if(!(strcmp(tmp, cmd2))) printf("usage: echo [varity]\n");
else if(!(strcmp(tmp, cmd3))) printf("usage: cat [file | dir]\n");
else if(!(strcmp(tmp, cmd4))) printf("usage: mkdir [dir]\n");
else if(!(strcmp(tmp, cmd5))) printf("usage: rm [fiel | dir]\n");
else if(!(strcmp(tmp, cmd6))) printf("usage: cd [dir]\n");
else if(!(strcmp(tmp, cmd7))) printf("usage: chmod [prevlege] [file | dir]\n\n [For example]: chmod 777 hello.c\n '777' will give hello.c full previlege.\n");
else if(!(strcmp(tmp, cmd8))) printf("usage: pwd [dir]\n");
else if(!(strcmp(tmp, cmd9))) printf("usage: wc [-c | -l] [file | dir]\n\n -c: number of bytes or characters\n -l: number of lines\n");
else if(!(strcmp(tmp, cmd10))) printf("usage: date\n Cmmand will show localtime\n");
else if(!(strcmp(tmp, cmd11))) printf("usage: time [cmmand]\n show Command excecute time.\n [For exam]: time date\n");
else if(!(strcmp(tmp, cmd12))) printf("usage: exit\n Quit CoralShell\n");
else if(!(strcmp(tmp, cmd13))) printf("usage: help [cmmand]\n Use 'help' to show all commands in Coral shell\n Also use 'help command' to show details for each command\n");
else if(!(strcmp(tmp, cmd14))) printf("usage: kill [-1 | -9 | -15] [pid]\n -1: sighup\n -9: sigkill\n -15: sigterm\n");
else if(!(strcmp(tmp, cmd15))) printf("usage: echo [varity]\n");
else if(!(strcmp(tmp, cmd16))) printf("usage: Show all command used.\n");
else if(!(strcmp(tmp, cmd17))) printf("usage: system message such as CPU, Memory ...\n");
else if(!(strcmp(tmp, cmd18))) printf("usage: just use 'clear' to clean screen\n");
else printf("Usage: help [command]\n\nExample: 'help' for all command \n or 'help pwd' for command pwd\n");
break;
case 14:
do_kill(tmp,tmp1);
break;
case 15:
do_who();
break;
case 16:
for (j;j<=i ;j++ )
{
printf("%d %s\n", j, history[j]);
}
/*
if(history1!=NULL){
printf("%d %s\n", i, history1);
i++;
}
if(history2!=NULL){
printf("%d %s\n", i, history2);
i++;
}
if(history3!=NULL){
printf("%d %s\n", i, history3);
i++;
}
if(history4!=NULL){
printf("%d %s\n", i, history4);
i++;
}
if(history5!=NULL){
printf("%d %s\n", i, history5);
i++;
}
if(history6!=NULL){
printf("%d %s\n", i, history6);
i++;
}
if(history7!=NULL){
printf("%d %s\n", i, history7);
i++;
}
if(history8!=NULL){
printf("%d %s\n", i, history8);
i++;
}
if(history9!=NULL){
printf("%d %s\n", i, history9);
i++;
}
*/
break;
case 17:
do_cat("/proc/cpuinfo");
do_cat("/proc/meminfo");
break;
case 18:
do_clear();
break;
case 19:
//do_exec()
break;
}
return 0;
}
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