void execBgCmd(){
int i=0;
int pid;
int start,end;
for(;i<strlen(inputBuff);i++){
if(inputBuff[i]=='%'){
start=i+1;
break;
}
}
end=strlen(inputBuff);
pid=str2Pid(inputBuff,start,end);
if(pid != -1){
bg_exec(pid);
}
}
/*执行命令*/
void execSimpleCmd(SimpleCmd *cmd){
int i, pid;
char *temp;
Job *now = NULL;
if(strcmp(cmd->args[0], "exit") == 0) { //exit命令
exit(0);
} else if (strcmp(cmd->args[0], "history") == 0) { //history命令
if(history.end == -1){
printf("尚未执行任何命令\n");
return;
}
i = history.start;
do {
printf("%s\n", history.cmds[i]);
i = (i + 1)%HISTORY_LEN;
} while(i != (history.end + 1)%HISTORY_LEN);
} else if (strcmp(cmd->args[0], "jobs") == 0) { //jobs命令
if(head == NULL){
printf("尚无任何作业\n");
} else {
printf("index\tpid\tstate\t\tcommand\n");
for(i = 1, now = head; now != NULL; now = now->next, i++){
printf("%d\t%d\t%s\t\t%s\n", i, now->pid, now->state, now->cmd);
}
}
} else if (strcmp(cmd->args[0], "cd") == 0) { //cd命令
temp = cmd->args[1];
if(temp != NULL){
if(chdir(temp) < 0){
printf("cd; %s 错误的文件名或文件夹名！\n", temp);
}
}
} else if (strcmp(cmd->args[0], "fg") == 0) { //fg命令
temp = cmd->args[1];
if(temp != NULL && temp[0] == '%'){
pid = str2Pid(temp, 1, strlen(temp));
if(pid != -1){
fg_exec(pid);
}
}else{
printf("fg; 参数不合法，正确格式为：fg %<int>\n");
}
} else if (strcmp(cmd->args[0], "bg") == 0) { //bg命令
temp = cmd->args[1];
if(temp != NULL && temp[0] == '%'){
pid = str2Pid(temp, 1, strlen(temp));
if(pid != -1){
bg_exec(pid);
}
}
else{
printf("bg; 参数不合法，正确格式为：bg %<int>\n");
}
} else{ //外部命令
execOuterCmd(cmd);
}
//释放结构体空间
for(i = 0; cmd->args[i] != NULL; i++){
free(cmd->args[i]);
free(cmd->input);
free(cmd->output);
}
}
/*执行命令*/
void execSimpleCmd(SimpleCmd *cmd){
int i, pid;
char *temp;
Job *now = NULL;
if(strcmp(cmd->args[0], "exit") == 0) { //exit命令
exit(0);
} else if (strcmp(cmd->args[0], "history") == 0) { //history命令
if(history.end == -1){
//printf("尚未执行任何命令\n");
printf("there has no command before\n");
return;
}
i = history.start;
do {
printf("%s\n", history.cmds[i]);
i = (i + 1)%HISTORY_LEN;
} while(i != (history.end + 1)%HISTORY_LEN);
} else if (strcmp(cmd->args[0], "jobs") == 0) { //jobs命令
if(head == NULL){
//printf("尚无任何作业\n");
printf("no jobs now\n");
} else {
printf("index\tpid\tstate\t\tcommand\n");
for(i = 1, now = head; now != NULL; now = now->next, i++){
printf("%d\t%d\t%s\t\t%s\n", i, now->pid, now->state, now->cmd);
}
}
} else if (strcmp(cmd->args[0], "cd") == 0) { //cd命令
temp = cmd->args[1];
if(temp != NULL){
if(chdir(temp) < 0){
//printf("cd; %s 错误的文件名或文件夹名！\n", temp);
printf("cd; %s wrong files or floder name\n", temp);
}
}
} else if (strcmp(cmd->args[0], "fg") == 0) { //fg命令
temp = cmd->args[1];
if(temp != NULL && temp[0] == '%'){
pid = str2Pid(temp, 1, strlen(temp));
if(pid != -1){
fg_exec(pid);
}
}else{
//printf("fg; 参数不合法，正确格式为：fg %<int>\n");
printf("fg; illegal parameter, right form:fg %<int>\n");
}
} else if (strcmp(cmd->args[0], "bg") == 0) { //bg命令
temp = cmd->args[1];
if(temp != NULL && temp[0] == '%'){
pid = str2Pid(temp, 1, strlen(temp));
if(pid != -1){
bg_exec(pid);
}
}
else{
//printf("bg; 参数不合法，正确格式为：bg %<int>\n");
printf("bg; illegal parameter, right form:bg %<int>\n");
}
} else if(strcmp(cmd->args[0], "mykill") == 0){// mykill 命令
temp = cmd->args[1];
if( temp != NULL){
pid = str2Pid(temp,0,strlen(temp));
kill(pid,SIGKILL);
}
else{
printf("mykill; ilegal parameter, right form:mykill <int>\n");
}
} else if (strcmp(cmd->args[0], "myecho") == 0){//myecho命令
if( cmd->args[1] != NULL) {
for(i = 1; cmd->args[i] != NULL; i++)
printf("%s ", cmd->args[i]);
}
printf("\n");
}else{ //外部命令
execOuterCmd(cmd);
}
//释放结构体空间
for(i = 0; cmd->args[i] != NULL; i++){
free(cmd->args[i]);
free(cmd->input);
free(cmd->output);
}
}
