1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
use crate::{InodeFilter, WalkOptions, WalkResult};
use failure::Error;
use std::borrow::Cow;
use std::{fmt, io, path::Path};
use termion::color;
/// Aggregate the given `paths` and write information about them to `out` in a human-readable format.
/// If `compute_total` is set, it will write an additional line with the total size across all given `paths`.
/// If `sort_by_size_in_bytes` is set, we will sort all sizes (ascending) before outputting them.
pub fn aggregate(
mut out: impl io::Write,
options: WalkOptions,
compute_total: bool,
sort_by_size_in_bytes: bool,
paths: impl IntoIterator<Item = impl AsRef<Path>>,
) -> Result<(WalkResult, Statistics), Error> {
let mut res = WalkResult::default();
let mut stats = Statistics::default();
stats.smallest_file_in_bytes = u64::max_value();
let mut total = 0;
let mut num_roots = 0;
let mut aggregates = Vec::new();
let mut inodes = InodeFilter::default();
for path in paths.into_iter() {
num_roots += 1;
let mut num_bytes = 0u64;
let mut num_errors = 0u64;
for entry in options.iter_from_path(path.as_ref()) {
stats.entries_traversed += 1;
match entry {
Ok(entry) => {
let file_size = match entry.metadata {
Some(Ok(ref m)) if !m.is_dir() && (options.count_hard_links || inodes.add(m)) => {
if options.apparent_size {
m.len()
} else {
filesize::file_real_size_fast(&entry.path(), m)
.unwrap_or_else(|_| {
num_errors += 1;
0
})
}
},
Some(Ok(_)) => 0,
Some(Err(_)) => {
num_errors += 1;
0
}
None => unreachable!(
"we ask for metadata, so we at least have Some(Err(..))). Issue in jwalk?"
),
};
stats.largest_file_in_bytes = stats.largest_file_in_bytes.max(file_size);
stats.smallest_file_in_bytes = stats.smallest_file_in_bytes.min(file_size);
num_bytes += file_size;
}
Err(_) => num_errors += 1,
}
}
if sort_by_size_in_bytes {
aggregates.push((path.as_ref().to_owned(), num_bytes, num_errors));
} else {
write_path(
&mut out,
&options,
&path,
num_bytes,
num_errors,
path_color(&path),
)?;
}
total += num_bytes;
res.num_errors += num_errors;
}
if stats.entries_traversed == 0 {
stats.smallest_file_in_bytes = 0;
}
if sort_by_size_in_bytes {
aggregates.sort_by_key(|&(_, num_bytes, _)| num_bytes);
for (path, num_bytes, num_errors) in aggregates.into_iter() {
write_path(
&mut out,
&options,
&path,
num_bytes,
num_errors,
path_color(&path),
)?;
}
}
if num_roots > 1 && compute_total {
write_path(
&mut out,
&options,
Path::new("total"),
total,
res.num_errors,
color::Fg(color::Reset),
)?;
}
Ok((res, stats))
}
fn path_color(path: impl AsRef<Path>) -> Box<dyn fmt::Display> {
if path.as_ref().is_file() {
Box::new(color::Fg(color::LightBlack))
} else {
Box::new(color::Fg(color::Reset))
}
}
fn write_path<C: fmt::Display>(
out: &mut impl io::Write,
options: &WalkOptions,
path: impl AsRef<Path>,
num_bytes: u64,
num_errors: u64,
path_color: C,
) -> Result<(), io::Error> {
writeln!(
out,
"{byte_color}{:>byte_column_width$}{byte_color_reset} {path_color}{}{path_color_reset}{}",
options.byte_format.display(num_bytes).to_string(), // needed for formatting to work (unless we implement it ourselves)
path.as_ref().display(),
if num_errors == 0 {
Cow::Borrowed("")
} else {
Cow::Owned(format!(
" <{} IO Error{}>",
num_errors,
if num_errors > 1 { "s" } else { "" }
))
},
byte_color = options.color.display(color::Fg(color::Green)),
byte_color_reset = options.color.display(color::Fg(color::Reset)),
path_color = options.color.display(path_color),
path_color_reset = options.color.display(color::Fg(color::Reset)),
byte_column_width = options.byte_format.width()
)
}
/// Statistics obtained during a filesystem walk
#[derive(Default, Debug)]
pub struct Statistics {
/// The amount of entries we have seen during filesystem traversal
pub entries_traversed: u64,
/// The size of the smallest file encountered in bytes
pub smallest_file_in_bytes: u64,
/// The size of the largest file encountered in bytes
pub largest_file_in_bytes: u64,
}
|
