int execl(const char *path, const char *arg, ...) {
va_list args;
va_start(args, arg);
char const **argv = bear_strings_build(arg, &args);
va_end(args);
bear_report_call(__func__, (char const *const *)argv);
int const result = call_execve(path, (char *const *)argv, environ);
bear_strings_release(argv);
return result;
}
int main(int argc, char *const argv[]) {
if (argc != 2)
exit(EXIT_FAILURE);
expected_out_open(argv[1]);
#ifdef HAVE_EXECV
call_execv();
#endif
#ifdef HAVE_EXECVE
call_execve();
#endif
#ifdef HAVE_EXECVP
call_execvp();
#endif
#ifdef HAVE_EXECVP2
call_execvP();
#endif
#ifdef HAVE_EXECVPE
call_execvpe();
#endif
#ifdef HAVE_EXECL
call_execl();
#endif
#ifdef HAVE_EXECLP
call_execlp();
#endif
#ifdef HAVE_EXECLE
call_execle();
#endif
#ifdef HAVE_POSIX_SPAWN
call_posix_spawn();
#endif
#ifdef HAVE_POSIX_SPAWNP
call_posix_spawnp();
#endif
expected_out_close();
return 0;
}
void read_input(int mode, char *batch_path) {
char c;
int current_length = (BUFFER_SIZE + 1);
line = (char *) malloc(sizeof(char) * (BUFFER_SIZE + 1));
char *path = (char *) malloc(sizeof(char) * (BUFFER_SIZE + 1));
fflush(stderr);
printf("\n[SHELL ] ");
fflush(stdout);
int run = 1, len = 0;
if (mode == BATCH) {
if (open(batch_path, O_RDONLY) > 0) {
batch_file = fopen(batch_path, "r");
} else {
fprintf(stderr, "cann't open or read the file\n");
return;
}
}
while (c != EOF && run) {
if (mode == INTERACTIVE)
c = getchar();
else {
c = fgetc(batch_file);
if (feof(stdin)) {
run = 0;
break;
}
}
switch (c) {
case '\n':
if (line[0] == '\0') {
len = 0;
free_args();
bzero(line, current_length);
fflush(stderr);
printf("\n[SHELL ] ");
fflush(stdout);
} else {
if (mode == BATCH) {
printf("%s\n", line);
}
if (len >= BUFFER_SIZE) {
fprintf(stderr, "buffer limit excited\n");
bzero(line, current_length);
len = 0;
continue;
}
add_to_history(line);
free_args();
fill_argv(line);
if (is_comment(line) == 0) {
if (strchr(line, '=') != NULL
&& strcmp(args[0], "echo") != 0) {
assign_var(line);
} else {
// free_args();
// fill_argv(line);
if (strcmp(args[0], "echo") != 0) {
int i;
for (i = 0; args[i] != NULL; i++) {
append_home_dir(args[i]);
fix_echo_line(args[i]);
}
} else {
int i;
for (i = 1; args[i] != NULL; i++) {
fix_echo_line(args[i]);
}
}
if (strcmp("exit", line) == 0) {
run = 0;
break;
} else if (strcmp("history", args[0]) == 0) {
execute_history();
} else if (strcmp("cd", args[0]) == 0)
cd();
else {
strcpy(path, args[0]);
if (strchr(path, '/') != NULL) {
int fd;
if ((fd = open(path, O_RDONLY)) > 0) {
close(fd);
call_execve(path);
} else {
fprintf(stderr,
"%s: No such file or directory\n",
args[0]);
}
} else {
if (!is_command(path)) {
fprintf(stderr, "%s: command not found\n",
args[0]);
} else {
call_execve(path);
}
}
}
}
}
free_args();
fflush(stderr);
printf("\n[SHELL ] ");
fflush(stdout);
bzero(line, BUFFER_SIZE);
len = 0;
}
bzero(line, BUFFER_SIZE);
break;
default:
len++;
if (len < BUFFER_SIZE) {
strncat(line, &c, 1);
}
break;
}
}
if (mode == BATCH)
fclose(batch_file);
}
int execv(const char *path, char *const argv[]) {
bear_report_call(__func__, (char const *const *)argv);
return call_execve(path, argv, environ);
}
