Fix multi-sentence error messages (#443)

Fixes multi-sentence error messages, where they start from a lowercased
letter.

Sources/Containerization/Image/ImageStore/ImageStore+Import.swift

@@ -209,7 +209,7 @@ extension ImageStore {
                     throw ContainerizationError(
                         .internalError,
                         message:
-                            "descriptor \(root.mediaType) with digest \(root.digest) does not list any supported platform or supports more than one platform. Supported platforms = \(supportedPlatforms)"
+                            "descriptor \(root.mediaType) with digest \(root.digest) does not list any supported platform or supports more than one platform, supported platforms: \(supportedPlatforms)"
                     )
                 }
                 let platform = supportedPlatforms.first!

Sources/Containerization/Image/ImageStore/ImageStore.swift

@@ -208,7 +208,7 @@ extension ImageStore {
         do {
             _ = try Reference.parse(new)
         } catch {
-            throw ContainerizationError(.invalidArgument, message: "invalid reference \(new). Error: \(error)")
+            throw ContainerizationError(.invalidArgument, message: "invalid reference \(new), error: \(error)")
         }
         let newDescription = Image.Description(reference: new, descriptor: descriptor)
         return try await self.create(description: newDescription)

Sources/ContainerizationArchive/ArchiveError.swift

@@ -55,13 +55,13 @@ public enum ArchiveError: Error, CustomStringConvertible {
         case .unableToAddFilter(let code, let name):
             return "unable to set the archive filter \(name), code \(code)"
         case .unableToWriteEntryHeader(let code):
-            return "unable to write the entry header to the archive. Error code \(code)"
+            return "unable to write the entry header to the archive, code \(code)"
         case .unableToWriteData(let code):
-            return "unable to write data to the archive. Error code \(code)"
+            return "unable to write data to the archive, code \(code)"
         case .unableToCloseArchive(let code):
-            return "unable to close the archive. Error code \(code)"
+            return "unable to close the archive, code \(code)"
         case .unableToOpenArchive(let code):
-            return "unable to open the archive. Error code \(code)"
+            return "unable to open the archive, code \(code)"
         case .unableToSetOption(_):
             return "unable to set an option on the archive."
         case .failedToSetLocale(let locales):

Sources/ContainerizationOCI/Client/LocalOCILayoutClient.swift

@@ -87,7 +87,7 @@ package final class LocalOCILayoutClient: ContentClient {
                     throw ContainerizationError(
                         .internalError,
                         message:
-                            "file \(filePath) exists but contains different content. expected digest: \(expectedDigest.digestString), existing digest: \(existingDigest.digestString)"
+                            "file \(filePath) exists but contains different content, expected digest: \(expectedDigest.digestString), existing digest: \(existingDigest.digestString)"
                     )
                 }
 

Sources/ContainerizationOCI/Content/ContentWriter.swift

@@ -36,7 +36,7 @@ public class ContentWriter {
         let exists = FileManager.default.fileExists(atPath: base.path, isDirectory: &isDirectory)
 
         guard exists && isDirectory.boolValue else {
-            throw ContainerizationError(.internalError, message: "cannot create ContentWriter for path \(base.absolutePath()). Not a directory")
+            throw ContainerizationError(.internalError, message: "cannot create ContentWriter for path \(base.absolutePath()), not a directory")
         }
     }
 

Sources/ContainerizationOCI/Reference.swift

@@ -188,7 +188,7 @@ public class Reference: CustomStringConvertible {
         tag = fields["tag"] ?? ""
 
         if tag.isEmpty {
-            throw ContainerizationError(.invalidArgument, message: "invalid format for image reference. Missing tag")
+            throw ContainerizationError(.invalidArgument, message: "invalid format for image reference, missing tag")
         }
         return try Reference(path: self.path, domain: self.domain, tag: tag)
     }
@@ -202,7 +202,7 @@ public class Reference: CustomStringConvertible {
         digest = fields["digest"] ?? ""
 
         if digest.isEmpty {
-            throw ContainerizationError(.invalidArgument, message: "invalid format for image reference. Missing digest")
+            throw ContainerizationError(.invalidArgument, message: "invalid format for image reference, missing digest")
         }
         return try Reference(path: self.path, domain: self.domain, digest: digest)
     }