hdiff-update-core 0.2.0

Core library for signed, transactional HDiffPatch directory updates.
Documentation 
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use serde::{Deserialize, Serialize};

pub const MANIFEST_SIGNATURE_ALGORITHM: &str = "ed25519";

#[derive(Debug, Clone, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct Artifact {
    pub url: String,
    pub sha256: String,
    pub size: u64,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub signature: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct ManifestSignature {
    #[serde(default = "default_signature_algorithm")]
    pub algorithm: String,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub key_id: Option<String>,
    pub value: String,
}

pub fn default_platform() -> String {
    let os = if cfg!(target_os = "windows") {
        "windows"
    } else if cfg!(target_os = "macos") {
        "darwin"
    } else if cfg!(target_os = "linux") {
        "linux"
    } else {
        std::env::consts::OS
    };

    let arch = if cfg!(target_arch = "x86_64") {
        "x86_64"
    } else if cfg!(target_arch = "aarch64") {
        "aarch64"
    } else {
        std::env::consts::ARCH
    };

    format!("{os}-{arch}")
}

fn default_signature_algorithm() -> String {
    MANIFEST_SIGNATURE_ALGORITHM.to_string()
}