Merge pull request #79 from ken-broadsheet/master

Update for Swift 5.

Package@swift-5.2.swift

@@ -0,0 +1,23 @@
+// swift-tools-version:5.2
+import PackageDescription
+
+let package = Package(
+    name: "PostgreSQL",
+    products: [
+        .library(name: "PostgreSQL", targets: ["PostgreSQL"]),
+    ],
+    dependencies: [
+        // Module map for `libpq`
+        .package(name: "CPostgreSQL", url: "https://github.com/vapor-community/cpostgresql.git", from: "2.1.0"),
+
+        // Data structure for converting between multiple representations
+        .package(name: "Node", url: "https://github.com/vapor/node.git", from: "2.1.0"),
+
+        // Core extensions, type-aliases, and functions that facilitate common tasks
+        .package(name: "Core", url: "https://github.com/vapor/core.git", from: "2.1.2"),
+    ],
+    targets: [
+        .target(name: "PostgreSQL", dependencies: ["CPostgreSQL", "Node", "Core"]),
+        .testTarget(name: "PostgreSQLTests", dependencies: ["PostgreSQL"]),
+    ]
+)

Sources/PostgreSQL/Bind/BinaryUtils.swift

@@ -4,12 +4,20 @@ import Core
 extension UInt8 {
     var lowercaseHexPair: String {
         let hexString = String(self, radix: 16, uppercase: false)
+        #if swift(>=5.0)
+        return String(repeating: "0", count: 2 - hexString.count) + hexString
+        #else
         return String(repeating: "0", count: 2 - hexString.characters.count) + hexString
+        #endif
     }
 
     var lowercaseBinaryString: String {
         let bitString = String(self, radix: 2, uppercase: false)
+        #if swift(>=5.0)
+        return String(repeating: "0", count: 8 - bitString.count) + bitString
+        #else
         return String(repeating: "0", count: 8 - bitString.characters.count) + bitString
+        #endif
     }
 }
 
@@ -190,7 +198,11 @@ struct BinaryUtils {
 
             // The number of digits should be 4 (DEC_DIGITS),
             // so pad if necessary.
+            #if swift(>=5.0)
+            return String(repeating: "0", count: Numeric.decDigits - stringDigits.count) + stringDigits
+            #else
             return String(repeating: "0", count: Numeric.decDigits - stringDigits.characters.count) + stringDigits
+            #endif
         }
 
         /// Function for rounding numeric values.

Sources/PostgreSQL/Bind/Bind.swift

@@ -14,7 +14,11 @@ public final class Bind {
 
         deinit {
             if ownsMemory {
+                #if swift(>=5.0)
+                bytes.deallocate()
+                #else
                 bytes.deallocate(capacity: length)
+                #endif
             }
         }
     }