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/*********************************************************************
* bfs *
* Copyright (C) 2015 Tavian Barnes <tavianator@tavianator.com> *
* *
* This program is free software. It comes without any warranty, to *
* the extent permitted by applicable law. You can redistribute it *
* and/or modify it under the terms of the Do What The Fuck You Want *
* To Public License, Version 2, as published by Sam Hocevar. See *
* the COPYING file or http://www.wtfpl.net/ for more details. *
*********************************************************************/
#include "bftw.h"
#include "color.h"
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/resource.h>
#include <unistd.h>
static int infer_nopenfd() {
int ret = 4096;
struct rlimit rl;
if (getrlimit(RLIMIT_NOFILE, &rl) == 0) {
if (rl.rlim_cur != RLIM_INFINITY) {
ret = rl.rlim_cur;
}
}
// Account for std{in,out,err}
if (ret > 3) {
ret -= 3;
}
return ret;
}
typedef struct {
const char *path;
color_table *colors;
bool hidden;
} options;
static int callback(const char *fpath, const struct BFTW *ftwbuf, void *ptr) {
const options *opts = ptr;
if (ftwbuf->typeflag == BFTW_ERROR) {
print_error(opts->colors, fpath, ftwbuf);
return BFTW_SKIP_SUBTREE;
}
if (!opts->hidden) {
if (ftwbuf->base > 0 && fpath[ftwbuf->base] == '.') {
return BFTW_SKIP_SUBTREE;
}
}
pretty_print(opts->colors, fpath, ftwbuf->statbuf);
return BFTW_CONTINUE;
}
int main(int argc, char *argv[]) {
int ret = EXIT_FAILURE;
options opts;
opts.path = NULL;
opts.colors = NULL;
opts.hidden = true;
bool color = isatty(STDOUT_FILENO);
for (int i = 1; i < argc; ++i) {
const char *arg = argv[i];
if (strcmp(arg, "-color") == 0) {
color = true;
} else if (strcmp(arg, "-nocolor") == 0) {
color = false;
} else if (strcmp(arg, "-hidden") == 0) {
opts.hidden = true;
} else if (strcmp(arg, "-nohidden") == 0) {
opts.hidden = false;
} else if (arg[0] == '-') {
fprintf(stderr, "Unknown option `%s`.", arg);
goto done;
} else {
if (opts.path) {
fprintf(stderr, "Duplicate path `%s` on command line.", arg);
goto done;
}
opts.path = arg;
}
}
if (!opts.path) {
opts.path = ".";
}
int flags = BFTW_RECOVER;
if (color) {
flags |= BFTW_STAT;
opts.colors = parse_colors(getenv("LS_COLORS"));
}
int nopenfd = infer_nopenfd();
if (bftw(opts.path, callback, nopenfd, flags, &opts) != 0) {
perror("bftw()");
goto done;
}
ret = EXIT_SUCCESS;
done:
free_colors(opts.colors);
return ret;
}
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