vallum 0.8.5

Security boundary between AI coding agents and your shell — redacts secrets, neutralizes prompt injection, sanitizes untrusted terminal output, audits every command.
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

use super::CommandOptimizer;

pub struct PytestOptimizer;

impl CommandOptimizer for PytestOptimizer {
    fn name(&self) -> &'static str {
        "pytest"
    }

    fn matches(&self, cmd: &str, args: &[String]) -> bool {
        if cmd == "pytest" {
            return true;
        }

        matches!(cmd, "python" | "python3")
            && args.len() >= 2
            && args[0] == "-m"
            && args[1] == "pytest"
    }

    fn optimize(&self, input: &str) -> Option<String> {
        if input.lines().count() < 10 {
            return None;
        }

        let mut progress_hidden = 0usize;
        let mut preserved = Vec::new();

        for line in input.lines() {
            let trimmed = line.trim();

            if is_progress_line(trimmed) {
                progress_hidden += 1;
                continue;
            }

            if should_preserve(trimmed) {
                preserved.push(line.to_string());
            }
        }

        if progress_hidden == 0 {
            return None;
        }

        let mut out = String::new();
        out.push_str(&format!("Progress: {} lines hidden\n", progress_hidden));

        if !preserved.is_empty() {
            out.push('\n');
            out.push_str(&preserved.join("\n"));
            out.push('\n');
        }

        out.push_str("[summarized by vallum]\n");
        Some(out)
    }
}

fn is_progress_line(trimmed: &str) -> bool {
    if !(trimmed.contains(".py") || trimmed.contains("::")) {
        return false;
    }

    let Some(last) = trimmed.split_whitespace().last() else {
        return false;
    };

    !last.is_empty()
        && last
            .chars()
            .all(|ch| matches!(ch, '.' | 'F' | 'E' | 's' | 'x' | 'X'))
}

fn should_preserve(trimmed: &str) -> bool {
    trimmed.is_empty()
        || trimmed.starts_with("================")
        || trimmed.starts_with("platform ")
        || trimmed.starts_with("rootdir:")
        || trimmed.starts_with("configfile:")
        || trimmed.starts_with("plugins:")
        || trimmed.starts_with("collected ")
        || trimmed.starts_with("FAILED ")
        || trimmed.starts_with("ERROR ")
        || trimmed.starts_with("E   ")
        || trimmed.starts_with(">")
        || trimmed.starts_with("________________")
}

#[cfg(test)]
mod tests {
    use super::*;

    fn args(items: &[&str]) -> Vec<String> {
        items.iter().map(|s| s.to_string()).collect()
    }

    #[test]
    fn matches_pytest_binary() {
        let opt = PytestOptimizer;
        assert!(opt.matches("pytest", &[]));
    }

    #[test]
    fn matches_python_module_pytest() {
        let opt = PytestOptimizer;
        assert!(opt.matches("python3", &args(&["-m", "pytest"])));
    }

    #[test]
    fn summarizes_progress_lines() {
        let opt = PytestOptimizer;
        let input = concat!(
            "============================= test session starts =============================\n",
            "platform darwin -- Python 3.11.0, pytest-8.0.0, pluggy-1.0.0\n",
            "rootdir: /tmp/app\n",
            "plugins: anyio-4.0.0\n",
            "collected 12 items\n",
            "\n",
            "tests/test_alpha.py ........\n",
            "tests/test_beta.py ...F.\n",
            "\n",
            "=================================== FAILURES ===================================\n",
            "______________________________ test_example ___________________________________\n",
            "E   assert 1 == 2\n",
            "\n",
            "=========================== short test summary info ============================\n",
            "FAILED tests/test_beta.py::test_example - assert 1 == 2\n",
            "========================= 1 failed, 11 passed in 0.50s =========================\n"
        );

        let result = opt.optimize(input).unwrap();
        assert!(result.contains("Progress: 2 lines hidden"));
        assert!(result.contains("collected 12 items"));
        assert!(result.contains("1 failed, 11 passed"));
        assert!(result.contains("[summarized by vallum]"));
    }
}