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#include <assert.h>
#include <ftw.h>
#include <getopt.h>
#include <limits.h>
#include <pwd.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include "util/versie.h"
static int max_depth = -1;
static bool show_hidden = false;
static bool dirs_only = false;
static void usage(FILE *f) {
fprintf(f,
"Gebruik: boom [OPTIES]... [STARTPUNTEN]...\n"
"\n"
"Geef inhoud van mapjes weer in een boom-achtig formaat.\n"
"\n"
" -a Alle bestanden worden weergegeven, ookal beginnen ze met een puntje\n"
" -m Geef alleen mapjes weer\n"
" -d Maximale diepte\n"
" -h Toon deze hulptekst\n"
" -V Toon versienummer\n");
}
// Returns pointer to argument array containing the starting points
static char** parse_options(int argc, char **argv) {
int opt;
while ((opt = getopt(argc, argv, "amd:hV")) != -1) {
switch (opt) {
case 'a':
show_hidden = true;
break;
case 'm':
dirs_only = true;
break;
case 'd':
max_depth = atoi(optarg);
if (max_depth <= 0) {
fprintf(stderr, "boom: maximale diepte moet groter zijn dan 0\n");
exit(1);
}
break;
case 'h':
usage(stdout);
exit(0);
case 'V':
drukkedoos_print_versie(stdout);
exit(0);
case '?':
usage(stderr);
exit(1);
}
}
return argv + optind;
}
static int prev_level = -1;
static int skip_level = -1;
static int f(const char *fpath, const struct stat *, int typeflag, struct FTW *ftwbuf) {
int level = ftwbuf->level;
bool is_dir
= typeflag == FTW_D
|| typeflag == FTW_DNR
|| typeflag == FTW_DP;
if (level < skip_level) {
skip_level = -1;
} else if (skip_level != -1 && level >= skip_level) {
return 0;
}
// check max depth
if (max_depth >= 0 && level >= (max_depth + 1)) return 0;
const char *fname = basename(fpath);
// don't show hidden files
if (!show_hidden && fname[0] == '.' && strlen(fpath) > 2 && level != 0) {
skip_level = level + 1;
goto done;
}
// don't show files in dirs only mode
if (dirs_only && !is_dir) return 0;
for (int i = 1; i < level; i++) {
printf("| ");
}
if (level != 0) {
printf("|-- ");
}
printf("%s", fname);
if (typeflag == FTW_SL) {
char real_name[PATH_MAX] = {0};
if (readlink(fpath, real_name, PATH_MAX-1) != -1)
printf(" -> %s", real_name);
}
printf("\n");
done:
prev_level = level;
return 0;
}
int entry_boom(int argc, char **argv) {
char **args = parse_options(argc, argv);
int flags = 0;
flags |= FTW_PHYS;
if (*args == NULL) {
nftw(".", f, 4096, flags);
return 0;
}
for (int i = 0; args[i]; i++) {
nftw(args[i], f, 4096, flags);
}
return 0;
}
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