src/client/backup_specification.rs: split code into extra file

src/client/backup_specification.rs

@@ -0,0 +1,39 @@
+use anyhow::{bail, Error};
+
+use proxmox::api::schema::*;
+
+proxmox::const_regex! {
+    BACKUPSPEC_REGEX = r"^([a-zA-Z0-9_-]+\.(pxar|img|conf|log)):(.+)$";
+}
+
+pub const BACKUP_SOURCE_SCHEMA: Schema = StringSchema::new(
+    "Backup source specification ([<label>:<path>]).")
+    .format(&ApiStringFormat::Pattern(&BACKUPSPEC_REGEX))
+    .schema();
+
+pub enum BackupSpecificationType { PXAR, IMAGE, CONFIG, LOGFILE }
+
+pub struct BackupSpecification {
+    pub archive_name: String, // left part
+    pub config_string: String, // right part
+    pub spec_type: BackupSpecificationType,
+}
+
+pub fn parse_backup_specification(value: &str) -> Result<BackupSpecification, Error> {
+
+    if let Some(caps) = (BACKUPSPEC_REGEX.regex_obj)().captures(value) {
+        let archive_name = caps.get(1).unwrap().as_str().into();
+        let extension = caps.get(2).unwrap().as_str();
+        let config_string =  caps.get(3).unwrap().as_str().into();
+        let spec_type = match extension {
+            "pxar" => BackupSpecificationType::PXAR,
+            "img" => BackupSpecificationType::IMAGE,
+            "conf" => BackupSpecificationType::CONFIG,
+            "log" => BackupSpecificationType::LOGFILE,
+            _ => bail!("unknown backup source type '{}'", extension),
+        };
+        return Ok(BackupSpecification { archive_name, config_string, spec_type });
+    }
+
+    bail!("unable to parse backup source specification '{}'", value);
+}