Shader and Swift updates.

- New shader build script.
- Swift platform macros.

EncryptFile/main.m

@@ -0,0 +1,59 @@
+//
+//  main.m
+//  EncryptFile
+//
+//  Created by Colin Caufield on 2016-03-07.
+//  Copyright © 2016 Secret Geometry, Inc. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "AQDataExtensions.h"
+
+#define VALIDATE
+
+int main(int argc, const char* argv[])
+{
+    if (argc != 4)
+    {
+        NSLog(@"Usage: EncryptFile <input-file> <output-file> <password>.\n");
+        return 1;
+    }
+
+    NSString* inputFilename  = [NSString stringWithUTF8String:argv[1]];
+    NSString* outputFilename = [NSString stringWithUTF8String:argv[2]];
+    NSString* password       = [NSString stringWithUTF8String:argv[3]];
+
+    NSData* rawData = [NSData dataWithContentsOfFile:inputFilename];
+    if (rawData == nil || rawData.length == 0)
+    {
+        NSLog(@"Error reading from file %@.\n", inputFilename);
+        return 1;
+    }
+
+    NSData* encryptedData = [rawData dataEncryptedWithPassword:password];
+    if (encryptedData == nil || encryptedData.length == 0)
+    {
+        NSLog(@"Error encrypting with password %@.\n", password);
+        return 1;
+    }
+
+    BOOL writeOk = [encryptedData writeToFile:outputFilename atomically:NO];
+    if (writeOk == NO)
+    {
+        NSLog(@"Error writing to file %@.\n", outputFilename);
+        return 1;
+    }
+
+    #ifdef VALIDATE
+
+        NSData* unencryptedData = [encryptedData dataDecryptedWithPassword:password];
+        if (unencryptedData == nil || ![unencryptedData isEqualToData:rawData])
+        {
+            NSLog(@"Validation failed.\n");
+            return 1;
+        }
+
+    #endif
+
+    return 0;
+}

Podfile

@@ -9,3 +9,8 @@ target 'SGLKitTouch' do
   platform :ios, '9.0'
   pod 'OpenSSL', '~> 1.0'
 end
+
+target 'EncryptFile' do
+  platform :osx, '10.9'
+  pod 'OpenSSL', '~> 1.0'
+end