cliai 0.2.0

A small Rust library for invoking AI tools through CLI backends like Ollama and GitHub Copilot CLI.
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

use std::process::Command;

use crate::{AiBackend, AiError, GenerateRequest, GenerateResponse};

/// AI backend that invokes the GitHub Copilot CLI.
///
/// By default this backend executes the `copilot` binary from `PATH`.
#[derive(Debug, Clone)]
pub struct Copilot {
    bin: String,
}

impl Copilot {
    /// Creates a new Copilot backend using the default `copilot` binary.
    pub fn new() -> Self {
        Self {
            bin: "copilot".into(),
        }
    }

    /// Overrides the executable name or path.
    pub fn with_bin(mut self, bin: impl Into<String>) -> Self {
        self.bin = bin.into();
        self
    }

    /// Returns the configured executable name or path.
    pub fn bin(&self) -> &str {
        &self.bin
    }

    fn build_prompt(&self, request: &GenerateRequest) -> String {
        let mut parts = Vec::new();

        if let Some(persona) = &request.persona {
            if !persona.trim().is_empty() {
                parts.push(format!("Persona:\n{}", persona));
            }
        }

        if let Some(instructions) = &request.instructions {
            if !instructions.trim().is_empty() {
                parts.push(format!("Instructions:\n{}", instructions));
            }
        }

        if let Some(memory) = &request.memory {
            if !memory.trim().is_empty() {
                parts.push(format!("Memory:\n{}", memory));
            }
        }

        parts.push(format!("Prompt:\n{}", request.prompt));
        parts.join("\n\n")
    }
}

impl Default for Copilot {
    /// Creates a new Copilot backend with default settings.
    fn default() -> Self {
        Self::new()
    }
}

impl AiBackend for Copilot {
    fn name(&self) -> &'static str {
        "copilot"
    }

    fn generate(&self, request: &GenerateRequest) -> Result<GenerateResponse, AiError> {
        let full_prompt = self.build_prompt(request);

        let output = Command::new(&self.bin)
            .args(["-s", "-p", &full_prompt])
            .output()?;

        if !output.status.success() {
            let stderr = String::from_utf8_lossy(&output.stderr).trim().to_string();

            return Err(AiError::CommandFailed(format!(
                "{} exited with status {}{}",
                self.bin,
                output.status,
                if stderr.is_empty() {
                    String::new()
                } else {
                    format!(": {}", stderr)
                }
            )));
        }

        Ok(GenerateResponse {
            text: String::from_utf8(output.stdout)?.trim().to_string(),
        })
    }
}