simit 0.17.3

Semver-aware git commit helper for Rust projects
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
145
146
147
148
149
150
151
152

use std::fs;
use std::io::ErrorKind;
use std::path::{Path, PathBuf};

use anyhow::{Context, Result, bail};

use crate::render::diff::unified_diff;

#[derive(Debug, Clone)]
pub struct GeneratedFile {
    pub relative_path: PathBuf,
    pub content: String,
}

#[derive(Debug, Clone, Copy, Default, PartialEq, Eq)]
pub struct Languages {
    pub rust: bool,
    pub nix: bool,
    pub uv_python: bool,
    pub toml: bool,
    pub yaml: bool,
    pub markdown: bool,
}

pub fn detect_languages(workspace_root: &Path) -> Result<Languages> {
    let mut languages = Languages {
        rust: workspace_root.join("Cargo.toml").exists(),
        uv_python: is_uv_python_project(workspace_root)?,
        ..Languages::default()
    };

    detect_languages_in_dir(workspace_root, workspace_root, &mut languages)?;
    Ok(languages)
}

pub fn write_generated_files(workspace_root: &Path, files: &[GeneratedFile]) -> Result<()> {
    for file in files {
        let path = workspace_root.join(&file.relative_path);
        let parent = path
            .parent()
            .ok_or_else(|| anyhow::anyhow!("generated path has no parent: {}", path.display()))?;
        fs::create_dir_all(parent).with_context(|| format!("creating {}", parent.display()))?;
        fs::write(&path, &file.content).with_context(|| format!("writing {}", path.display()))?;
    }

    Ok(())
}

pub fn check_generated_files(
    workspace_root: &Path,
    files: &[GeneratedFile],
    message: &str,
    show_diff: bool,
) -> Result<()> {
    let mut mismatches = Vec::new();
    let mut diffs = Vec::new();

    for file in files {
        let path = workspace_root.join(&file.relative_path);
        match fs::read_to_string(&path) {
            Ok(actual) if actual == file.content => {}
            Ok(actual) => {
                mismatches.push(format!("{} differs", file.relative_path.display()));
                if show_diff {
                    diffs.push(unified_diff(
                        &file.relative_path.display().to_string(),
                        &actual,
                        &file.content,
                    ));
                }
            }
            Err(e) if e.kind() == ErrorKind::NotFound => {
                mismatches.push(format!("{} is missing", file.relative_path.display()));
            }
            Err(e) => return Err(e).with_context(|| format!("reading {}", path.display())),
        }
    }

    if mismatches.is_empty() {
        Ok(())
    } else if diffs.is_empty() {
        bail!("{message}:\n{}", mismatches.join("\n"));
    } else {
        bail!(
            "{message}:\n{}\n{}",
            mismatches.join("\n"),
            diffs.join("\n")
        );
    }
}

fn is_uv_python_project(workspace_root: &Path) -> Result<bool> {
    if workspace_root.join("uv.lock").exists() {
        return Ok(true);
    }

    let pyproject = workspace_root.join("pyproject.toml");
    if !pyproject.exists() {
        return Ok(false);
    }

    let content = fs::read_to_string(&pyproject)
        .with_context(|| format!("reading {}", pyproject.display()))?;
    Ok(content.contains("[tool.uv") || content.contains("[dependency-groups]"))
}

fn detect_languages_in_dir(root: &Path, dir: &Path, languages: &mut Languages) -> Result<()> {
    for entry in fs::read_dir(dir).with_context(|| format!("reading {}", dir.display()))? {
        let entry = entry.with_context(|| format!("reading entry in {}", dir.display()))?;
        let path = entry.path();
        let file_type = entry
            .file_type()
            .with_context(|| format!("reading file type for {}", path.display()))?;

        if file_type.is_dir() {
            if should_skip_dir(root, &path) {
                continue;
            }
            detect_languages_in_dir(root, &path, languages)?;
            continue;
        }

        if !file_type.is_file() {
            continue;
        }

        match path.extension().and_then(|extension| extension.to_str()) {
            Some("nix") => languages.nix = true,
            Some("toml") => languages.toml = true,
            Some("yaml" | "yml") => languages.yaml = true,
            Some("md" | "markdown") => languages.markdown = true,
            Some("rs") => languages.rust = true,
            _ => {}
        }
    }

    Ok(())
}

fn should_skip_dir(root: &Path, path: &Path) -> bool {
    let Some(name) = path.file_name().and_then(|name| name.to_str()) else {
        return false;
    };

    matches!(
        name,
        ".git" | "target" | ".direnv" | "result" | "result-doc" | "node_modules"
    ) || path
        .strip_prefix(root)
        .map(|relative| relative.starts_with(".forgejo/workflows"))
        .unwrap_or(false)
}