pctx 0.1.3

Generate LLM-ready context from your codebase
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

//! Statistics collection and reporting.

use colored::*;

use crate::content::FileEntry;

/// Statistics about processed files
#[derive(Debug, Default, Clone)]
pub struct Stats {
    pub file_count: usize,
    pub total_lines: usize,
    pub total_bytes: usize,
    pub truncated_count: usize,
    pub skipped_count: usize,
    pub token_estimate: Option<usize>,
    pub duration_ms: u64,
}

impl Stats {
    /// Create new empty stats
    pub fn new() -> Self {
        Self::default()
    }

    /// Add a file entry to stats
    pub fn add_file(&mut self, entry: &FileEntry) {
        self.file_count += 1;
        self.total_lines += entry.original_lines;
        self.total_bytes += entry.original_bytes;

        if entry.truncated {
            self.truncated_count += 1;
        }
    }

    /// Estimate token count for the content
    #[cfg(feature = "tokens")]
    pub fn estimate_tokens(&mut self, content: &str, model: &str) {
        use tiktoken_rs::get_bpe_from_model;

        // Map common model names
        let model_name = match model.to_lowercase().as_str() {
            "gpt-4" | "gpt4" | "gpt-4o" | "gpt-4-turbo" => "gpt-4",
            "gpt-3.5" | "gpt-3.5-turbo" | "gpt35" => "gpt-3.5-turbo",
            "claude" | "claude-3" | "claude-3.5" => "gpt-4", // Use GPT-4 tokenizer as approximation
            _ => "gpt-4",
        };

        if let Ok(bpe) = get_bpe_from_model(model_name) {
            self.token_estimate = Some(bpe.encode_ordinary(content).len());
        } else {
            // Fallback to rough estimate
            self.token_estimate = Some(content.len() / 4);
        }
    }

    /// Estimate token count without tiktoken
    #[cfg(not(feature = "tokens"))]
    pub fn estimate_tokens(&mut self, content: &str, _model: &str) {
        // Rough estimate: ~4 characters per token for English text/code
        self.token_estimate = Some(content.len() / 4);
    }

    /// Print stats summary to stderr
    pub fn print_summary(&self) {
        eprintln!();
        eprintln!("{}", "─".repeat(40).dimmed());
        eprintln!("{}", "Statistics".bold());
        eprintln!("{}", "─".repeat(40).dimmed());
        eprintln!(
            "  {}      {}",
            "Files:".dimmed(),
            self.file_count.to_string().cyan()
        );
        eprintln!(
            "  {}      {}",
            "Lines:".dimmed(),
            format_number(self.total_lines).cyan()
        );
        eprintln!(
            "  {}       {}",
            "Size:".dimmed(),
            format_bytes(self.total_bytes).cyan()
        );

        if self.truncated_count > 0 {
            eprintln!(
                "  {}  {}",
                "Truncated:".dimmed(),
                self.truncated_count.to_string().yellow()
            );
        }

        if let Some(tokens) = self.token_estimate {
            eprintln!(
                "  {}     ~{}",
                "Tokens:".dimmed(),
                format_number(tokens).cyan()
            );
        }

        if self.duration_ms > 0 {
            eprintln!(
                "  {}   {}ms",
                "Duration:".dimmed(),
                self.duration_ms.to_string().dimmed()
            );
        }

        eprintln!("{}", "─".repeat(40).dimmed());
    }
}

/// Format a number with thousand separators
fn format_number(n: usize) -> String {
    let s = n.to_string();
    let mut result = String::new();
    for (i, c) in s.chars().rev().enumerate() {
        if i > 0 && i % 3 == 0 {
            result.insert(0, ',');
        }
        result.insert(0, c);
    }
    result
}

/// Format bytes as human-readable size
fn format_bytes(bytes: usize) -> String {
    const KB: usize = 1024;
    const MB: usize = KB * 1024;
    const GB: usize = MB * 1024;

    if bytes >= GB {
        format!("{:.2} GB", bytes as f64 / GB as f64)
    } else if bytes >= MB {
        format!("{:.2} MB", bytes as f64 / MB as f64)
    } else if bytes >= KB {
        format!("{:.2} KB", bytes as f64 / KB as f64)
    } else {
        format!("{} bytes", bytes)
    }
}