136 lines
2.6 KiB
C
136 lines
2.6 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <dirent.h>
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#include <errno.h>
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#include <pwd.h>
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#include <readline/readline.h>
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#include <readline/history.h>
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const int max = 1000;
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void cut(char **argv, char *command){
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int w = 0;
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char sep[] = " ";
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char *ptr = strtok(command, sep);
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while (ptr != NULL){
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argv[w]=ptr;
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w+=1;
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ptr = strtok(NULL, sep);
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}
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argv[w]=NULL;
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}
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void cd (char **argv){
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if(argv[1] == NULL){
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printf("Add arguments\n");
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return;
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}
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else if(argv[2] != NULL){
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printf("Too many arguments\n");
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return;
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}
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else{
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if (chdir(argv[1]) != 0)
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perror("chdir error");
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return;
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}
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}
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void spathf (char **argv, int *spath){
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int l;
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if (argv[1] == NULL){
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printf("Add arguments\n");
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return;
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}
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else if (argv[2] != NULL){
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printf("Too many arguments\n");
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return;
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}
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else if (!strcmp(argv[1], "help")){
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printf("Arguments:\n0 turns off path showing\n1 turns on path showing\n");
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return;
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}
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l = argv[1][0] - '0';
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if (argv[1][1] != 0 || l < 0 || l > 1){
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printf("Wrong number\n");
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return;
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}
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else
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*spath = l;
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}
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int main (){
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int spath = 1;
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using_history();
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while (1){
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char* argv[100];
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char *komenda, *prompt, directory[max];
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if (getcwd(directory, sizeof(directory)) == NULL){
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perror("getcwd() error");
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return -1;
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}
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struct passwd *p = getpwuid(getuid());
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if (spath){
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prompt = (char*)malloc(strlen(directory)+strlen(p->pw_name)+22 *sizeof(char));
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prompt[0]='\0';
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strcat(prompt, "\033[1;32m");
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strcat(prompt, "[");
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strcat(prompt, directory);
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strcat(prompt, "]\033[0m");
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strcat(prompt, p->pw_name);
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}
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else{
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prompt = (char*)malloc(strlen(p->pw_name)+3 *sizeof(char));
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strcat(prompt, p->pw_name);
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}
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strcat(prompt, "$ ");
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if (!(komenda = readline(prompt)))
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break;
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if (komenda[0] == 0)
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continue;
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add_history(komenda);
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cut(argv, komenda);
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if (argv[0]==NULL)
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continue;
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else if (!strcmp(argv[0], "spath")){
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spathf(argv, &spath);
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continue;
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}
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else if (!strcmp(argv[0], "cd")){
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cd(argv);
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continue;
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}
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else if (!strcmp(argv[0], "help")){
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if (fork() == 0){
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execlp("less", "less", "help", NULL);
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perror("execlp");
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exit(EXIT_FAILURE);
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}
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else
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wait(NULL);
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}
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else if (!strcmp(argv[0], "exit"))
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break;
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else
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if (fork() == 0){
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execvp(argv[0], argv);
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perror("execvp");
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exit(EXIT_FAILURE);
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}
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else
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wait(NULL);
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free(komenda);
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free(prompt);
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}
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return 0;
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}
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