dircat 0.2.0

High-performance Rust utility that concatenates and displays directory contents, similar to the C++ DirCat.
Documentation 
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

// tests/filter_regex.rs

mod common;

use assert_cmd::prelude::*;
use common::dircat_cmd;
use predicates::prelude::*;
use std::fs;
use tempfile::tempdir;

#[test]
fn test_path_regex_filter() -> Result<(), Box<dyn std::error::Error>> {
    let temp = tempdir()?;
    let src_dir = temp.path().join("src");
    let test_dir = temp.path().join("tests");
    fs::create_dir_all(&src_dir)?;
    fs::create_dir_all(&test_dir)?;

    let main_content = "Main";
    let lib_content = "Lib";
    let test_content = "Test";
    let readme_content = "Readme";
    fs::write(src_dir.join("main.rs"), main_content)?;
    fs::write(src_dir.join("lib.rs"), lib_content)?;
    fs::write(test_dir.join("integration.rs"), test_content)?;
    fs::write(temp.path().join("README.md"), readme_content)?;

    dircat_cmd()
        .arg("-r")
        .arg(r"^src/.*\.rs$") // Match .rs files RELATIVE to input dir starting with src/
        .current_dir(temp.path())
        .assert()
        .success()
        .stdout(predicate::str::contains("## File: src/main.rs")) // Keep header
        .stdout(predicate::str::contains(main_content)) // Keep content
        .stdout(predicate::str::contains("## File: src/lib.rs")) // Keep header
        .stdout(predicate::str::contains(lib_content)) // Keep content
        .stdout(predicate::str::contains("## File: tests/integration.rs").not()) // Ignore header
        .stdout(predicate::str::contains(test_content).not()) // Ignore content
        .stdout(predicate::str::contains("## File: README.md").not()) // Ignore header
        .stdout(predicate::str::contains(readme_content).not()); // Ignore content

    temp.close()?;
    Ok(())
}

#[test]
fn test_filename_regex_filter() -> Result<(), Box<dyn std::error::Error>> {
    let temp = tempdir()?;
    let src_dir = temp.path().join("src");
    fs::create_dir_all(&src_dir)?;

    let main_content = "Main";
    let lib_content = "Lib";
    let config_content = "Config";
    let cargo_content = "Cargo";
    fs::write(src_dir.join("main.rs"), main_content)?;
    fs::write(src_dir.join("lib.rs"), lib_content)?;
    fs::write(temp.path().join("config.toml"), config_content)?;
    fs::write(temp.path().join("Cargo.toml"), cargo_content)?;

    dircat_cmd()
        .arg("-d")
        .arg(r"\.toml$") // Match only filenames ending in .toml
        .current_dir(temp.path())
        .assert()
        .success()
        .stdout(predicate::str::contains("## File: config.toml")) // Keep header
        .stdout(predicate::str::contains(config_content)) // Keep content
        .stdout(predicate::str::contains("## File: Cargo.toml")) // Keep header
        .stdout(predicate::str::contains(cargo_content)) // Keep content
        .stdout(predicate::str::contains("## File: src/main.rs").not()) // Ignore header
        .stdout(predicate::str::contains(main_content).not()) // Ignore content
        .stdout(predicate::str::contains("## File: src/lib.rs").not()) // Ignore header
        .stdout(predicate::str::contains(lib_content).not()); // Ignore content

    temp.close()?;
    Ok(())
}

#[test]
fn test_path_and_filename_regex_filters() -> Result<(), Box<dyn std::error::Error>> {
    let temp = tempdir()?;
    let src_dir = temp.path().join("src");
    let test_dir = temp.path().join("tests");
    fs::create_dir_all(&src_dir)?;
    fs::create_dir_all(&test_dir)?;

    let main_content = "Main";
    let src_config = "SrcConfig";
    let test_config = "TestConfig";
    let cargo_content = "Cargo";
    fs::write(src_dir.join("main.rs"), main_content)?;
    fs::write(src_dir.join("config.toml"), src_config)?;
    fs::write(test_dir.join("test_config.toml"), test_config)?;
    fs::write(temp.path().join("Cargo.toml"), cargo_content)?;

    dircat_cmd()
        .arg("-r")
        .arg(r"^src/") // Relative path must start with src/
        .arg("-d")
        .arg(r"\.toml$") // Filename must end in .toml
        .current_dir(temp.path())
        .assert()
        .success()
        .stdout(predicate::str::contains("## File: src/config.toml")) // Only match header
        .stdout(predicate::str::contains(src_config)) // Only match content
        .stdout(predicate::str::contains("## File: src/main.rs").not()) // Ignore header
        .stdout(predicate::str::contains("## File: tests/test_config.toml").not()) // Ignore header
        .stdout(predicate::str::contains("## File: Cargo.toml").not()); // Ignore header

    temp.close()?;
    Ok(())
}

#[test]
fn test_path_regex_windows_separators() -> Result<(), Box<dyn std::error::Error>> {
    let temp = tempdir()?;
    let src_dir = temp.path().join("src");
    let data_dir = temp.path().join("data");
    fs::create_dir_all(&src_dir)?;
    fs::create_dir_all(&data_dir)?;

    let main_content = "Main";
    let data_content = "Data";
    fs::write(src_dir.join("main.rs"), main_content)?;
    fs::write(data_dir.join("config.txt"), data_content)?;

    // Use a regex with forward slashes, even if running on Windows.
    // The internal logic normalizes relative paths to use forward slashes before matching.
    dircat_cmd()
        .arg("-r")
        .arg("^src/") // Match relative paths starting with src/
        .current_dir(temp.path())
        .assert()
        .success()
        .stdout(predicate::str::contains("## File: src/main.rs")) // Keep header
        .stdout(predicate::str::contains(main_content)) // Keep content
        .stdout(predicate::str::contains("## File: data/config.txt").not()) // Ignore header
        .stdout(predicate::str::contains(data_content).not()); // Ignore content

    temp.close()?;
    Ok(())
}