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- #include "esh_main_loop.h"
- #include "esh_misc.h"
- void EShRunLoop() {
- struct termios orig_term_attr;
- struct termios new_term_attr;
- /* set the terminal to raw mode */
- tcgetattr(fileno(stdin), &orig_term_attr);
- memcpy(&new_term_attr, &orig_term_attr, sizeof(struct termios));
- new_term_attr.c_lflag &= ~(ECHO | ICANON | ISIG | IEXTEN);
- new_term_attr.c_cc[VTIME] = 0;
- new_term_attr.c_cc[VMIN] = 1;
- tcsetattr(fileno(stdin), TCSANOW, &new_term_attr);
- for (;;) {
- EShShowMsg();
- char* command = malloc(esh_info_global->max_command_length);
- memset(command, 0, esh_info_global->max_command_length);
- int command_length = 0;
- int current_command_pos = 0;
- char input_char;
- while (input_char = fgetc(stdin)) {
- if (input_char == 10) {
- printf("\n");
- break; // 'Enter' pressed;
- }
- if (input_char == EOF) {
- continue;
- }
- if (input_char == '\033') { // Arrow up/down/left/right sequence
- fgetc(stdin);
- switch(fgetc(stdin)) {
- case 'A': // Up
- break;
- case 'B': // Down
- break;
- case 'C': // Right
- if (current_command_pos < command_length) {
- printf("%c", command[current_command_pos]);
- ++current_command_pos;
- }
- break;
- case 'D': // Left
- if (current_command_pos > 0) {
- printf("\b");
- --current_command_pos;
- }
- break;
- }
- continue;
- }
- if (input_char == 4) {
- // Ctrl + d
- printf("\n");
- exit(0);
- }
- if (input_char == 127) {
- // Backspace
- if (current_command_pos > 0) {
- for (int i = current_command_pos - 1; i < command_length; ++i) {
- command[i] = command[i + 1];
- }
- command[command_length - 1] = '\0';
- printf("\b");
- printf("%s", command + current_command_pos - 1);
- printf(" \b");
- --current_command_pos;
- --command_length;
- for (int i = command_length - 1; i >= current_command_pos; --i) {
- printf("\b");
- }
- }
- continue;
- }
- if (input_char == 3) {
- // Ctrl + c
- printf("\n");
- exit(0);
- }
- if (EShIsShellLetter(input_char)) {
- for (int i = command_length; i >= current_command_pos; --i) {
- command[i + 1] = command[i];
- }
- command[current_command_pos] = input_char;
- printf("%s", command + current_command_pos);
- ++current_command_pos;
- ++command_length;
- for (int i = command_length; i > current_command_pos; --i) {
- printf("\b");
- }
- continue;
- }
- }
- if (command_length == 0) {
- printf("\n");
- continue;
- }
- int pid = fork();
- if (pid == 0) {
- execlp(command, command, NULL);
- printf("Esh: run command %s failed.\n", command);
- exit(1); // execlp failed
- } else {
- waitpid(pid, NULL, 0);
- printf("\n");
- }
- }
- /* restore the original terminal attributes */
- tcsetattr(fileno(stdin), TCSANOW, &orig_term_attr);
- }
- void EShShowMsg() {
- EShUpdateInviteMessage();
- printf("%s", esh_info_global->invite_message);
- }
- void EShParseCommandIntoJobs(char* command) {
- }
- void EShExecuteJobs(int jobs_num, EShJob* jobs_list) {
- }
- void EShSetJobCommandType(EShJob* job) {
- }
- void EShRunJob(EShJob* job) {
- }
- int EmptyCommand(const char* command) {
- }
- int InnerCommand(const char* command) {
- }
- void EShProcessInnerJob(const char* command) {
- }
- void EShProcessExecJob(const char* command) {
-
- }
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