int cmd_ls(int argc, char** argv) {
char d[PATH_LENGTH];
char* dir;
if (argc == 2) {
strcpy(d, argv[1]);
dir = (char*) d;
} else {
dir = (char*) NULL;
}
int i;
int n = syscall_filecount(dir);
char buffer[PATH_LENGTH];
if (n < 0) {
printf("Error reading %s (Reason: %d)\n", dir, n);
return n;
}
for (i = 0; i < n; ++i)
{
if (syscall_file(dir, i, buffer)) {
return 2;
}
printf("%s\n", buffer);
}
return 0;
}
int cmd_ls(int argc, char** argv) {
char dir[PATH_LENGTH];
if (argc == 1) {
syscall_getwd(dir);
} else if (argc == 2) {
strcpy(dir, argv[1]);
} else {
printf("Usage: ls [dir]\n");
return 1;
}
int i;
int n = syscall_filecount(argv[1]);
char buffer[PATH_LENGTH];
for (i = 0; i < n; ++i)
{
if (!syscall_file(argv[1], i, buffer)) {
return 2;
}
printf("%s\n", buffer);
}
return 0;
}
/* This function is pretty gnarly and assumes that anything will fit
in fixed buffers. */
size_t complete_at_point(char* s, size_t point) {
/* Point points just at the terminating zero of s. It might be
interesting to change the entire readline stuff to support arrow
keys and in-line editing, but that's neither here nor there. */
char volume[BUFFER_SIZE];
char filename[BUFFER_SIZE];
/* Start by finding the file name. */
int beg, end;
int i;
for (beg = point-1; beg >= 0; beg--) {
if (s[beg] == ' ' || s[beg] == '/' || s[beg] == ']') {
beg++;
break;
}
}
/* Beg now points at the beginning of the file name. */
strncpy(filename, s+beg, point-beg);
filename[point-beg] = '\0';
/* Let's extract the volume/directory. */
for (end = beg; beg >= 0; beg--) {
if (s[beg] == ' ' || s[beg] == '[') {
break;
}
}
strncpy(volume, s+beg, end-beg);
volume[end-beg+1] = '\0';
/* Now let's look at all the files of the volume and see if we can
find a match. */
int n = syscall_filecount(volume);
char file[PATH_LENGTH];
char match[PATH_LENGTH];
int anyfound = 0;
for (i = 0; i < n; ++i) {
if (!syscall_file(volume, i, file)) {
continue;
}
if (strstr(file, filename) == file) {
if (anyfound) {
int j;
/* Find where they differ. */
for (j = 0; file[j] == match[j]; j++)
;
match[j] = '\0';
} else {
anyfound = 1;
/* Only match so far. */
strcpy(match, file);
}
}
}
if (!anyfound) {
return point;
}
/* The array 'match' now contains the best match - insert it into
the input if we can. */
if (strlen(match)-strlen(filename) < BUFFER_SIZE - point) {
/* printf("(inserting %s)", match+strlen(filename));*/
strcpy(s+point, match+strlen(filename));
return point + strlen(match) - strlen(filename);
}
return point;
}
