pull: split into package_info::lookup and pull

src/package_info.rs

@@ -332,7 +332,7 @@ fn parse_sources(
 }
 
 /// Get package information from a package, distribution series, and pocket
-pub async fn get(
+async fn get(
     package_name: &str,
     series: &str,
     pocket: &str,
@@ -406,7 +406,7 @@ pub async fn get(
 }
 
 /// Try to find package information in a distribution, trying all series and pockets
-pub async fn find_package(
+async fn find_package(
     package_name: &str,
     dist: &str,
     pocket: &str,
@@ -452,6 +452,58 @@ pub async fn find_package(
     Err(format!("Package '{}' not found.", package_name).into())
 }
 
+/// Lookup package information for a source package
+///
+/// This function obtains package information either directly from a specific series
+/// or by searching across all series in a distribution.
+pub async fn lookup(
+    package: &str,
+    version: Option<&str>,
+    series: Option<&str>,
+    pocket: &str,
+    dist: Option<&str>,
+    progress: ProgressCallback<'_>,
+) -> Result<PackageInfo, Box<dyn Error>> {
+    // Obtain the package information, either directly in a series or with a search in all series
+    let package_info = if let Some(s) = series {
+        if let Some(cb) = progress {
+            cb(
+                &format!("Resolving package info for {}...", package),
+                "",
+                0,
+                0,
+            );
+        }
+
+        // Get the package information from that series and pocket
+        get(package, s, pocket, version).await?
+    } else {
+        let dist = dist.unwrap_or_else(||
+            // Use auto-detection to see if current distro is ubuntu, or fallback to debian by default
+            if std::process::Command::new("lsb_release").arg("-i").arg("-s").output()
+                .map(|o| String::from_utf8_lossy(&o.stdout).trim().to_lowercase()).unwrap_or_default() == "ubuntu" {
+                "ubuntu"
+            } else {
+                "debian"
+            }
+        );
+
+        if let Some(cb) = progress {
+            cb(
+                &format!("Searching for package {} in {}...", package, dist),
+                "",
+                0,
+                0,
+            );
+        }
+
+        // Try to find the package in all series from that dist
+        find_package(package, dist, pocket, version, progress).await?
+    };
+
+    Ok(package_info)
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;