initial check-in of sync code before adding replication (copy from query base)

Author: biozal

.gitignore

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+## Build generated
+build/
+DerivedData/
+iOS/
+macOS/
+
+## Various settings
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata/
+
+## Other
+*.moved-aside
+*.xccheckout
+*.xcscmblueprint
+
+### Xcode Patch ###
+*.xcodeproj/*
+!*.xcodeproj/project.pbxproj
+!*.xcodeproj/xcshareddata/
+!*.xcworkspace/contents.xcworkspacedata
+/*.gcno
+
+#Mac OS
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk

README.md

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+# Quickstart in Couchbase Lite Query with Swift and UIKit 
+#### Build an iOS App in Swift with Couchbase Lite 
+
+> This repo is designed to show you an app that allows users to log in and make changes to their user profile information.  User profile information is persisted as a Document in the local Couchbase Lite Database. When the user logs out and logs back in again, the profile information is loaded from the Database.  This app also demostrates how you can bundle, load, and use a `prebuilt` instance of Couchbase Lite and introduces you to the basics of the `QueryBuilder` interface.
+
+Full documentation can be found on the [Couchbase Developer Portal](https://developer.couchbase.com/tutorial-quickstart-ios-uikit-query).
+
+
+## Prerequisites
+To run this prebuilt project, you will need:
+
+- Mac running MacOS 11 or 12 
+- Xcode 12/13 - Download latest version from the <a target="_blank" rel="noopener noreferrer" href="https://itunes.apple.com/us/app/xcode/id497799835?mt=12">Mac App Store</a> or via <a target="_blank" rel="noopener noreferrer" href="https://github.com/RobotsAndPencils/XcodesApp">Xcodes</a>
+
+> **Note**: If you are using an older version of Xcode, which you need to retain for other development needs, make a copy of your existing version of Xcode and install the latest Xcode version.  That way you can have multiple versions of Xcode on your Mac.  More information can be found in [Apple's Developer Documentation](https://developer.apple.com/library/archive/technotes/tn2339/_index.html#//apple_ref/doc/uid/DTS40014588-CH1-I_HAVE_MULTIPLE_VERSIONS_OF_XCODE_INSTALLED_ON_MY_MACHINE__WHAT_VERSION_OF_XCODE_DO_THE_COMMAND_LINE_TOOLS_CURRENTLY_USE_)
+> 
+### Installing Couchbase Lite Framework
+
+The [Couchbase Documentation](https://docs.couchbase.com/couchbase-lite/3.0/swift/gs-install.html) has examples on how to add Couchbase Lite via
+- Swift Package Manager
+- Cocoa Pods
+- Carthage
+- Direct Download
+
+## App Architecture
+
+The sample app follows the [MVP pattern](https://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93presenter), separating the internal data model, from a passive view through a presenter that handles the logic of our application and acts as the conduit between the model and the view
+
+## Try it out
+
+* Open `src/UserProfileQueryDemo.xcodeproj` using Xcode
+* Build and run the project.
+* Verify that you see the login screen.
+
+## Conclusion
+
+This tutorial walked you through an example of how to use a pre-built Couchbase Lite database and has a simple Query example to show you how to use the `QueryBuilder` API in Swift.

src/LICENSE.txt

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+# Couchbase Lite (-Core) Utility Tools
+
+These are command-line tools intended to help developers working with Couchbase Lite databases. They are self-contained and can be run from anywhere.
+
+Each tool has a small amount of online help that can be accessed by running it either with no arguments, or with just a `--help` flag.
+
+**Compatibility:**
+
+* Each tool is self-contained, with its own embedded LiteCore library. This means it's important to upgrade the tools when you upgrade Couchbase Lite, since an older tool may not be able to read a newer database.
+* The tools can operate on databases created on any platform, as long as they're accessible through the filesystem. So for instance, you can copy a database from an Android app to an SD card, mount it on a Mac, and run the tool there.
+* The tools are not compatible with Couchbase Lite 1.x databases.
+
+## cblite
+
+A multipurpose tool for examining and querying a database. It has a number of subcommands, of which the most generally useful are:
+
+* `ls`: Lists the document IDs
+* `cat`: Displays documents as pretty-printed JSON
+* `query`: Runs a query, expressed in low-level [JSON format](https://github.com/couchbase/couchbase-lite-core/wiki/JSON-Query-Schema) (sorry, no N1QL parser!)
+
+It can be run in an interactive mode by giving a database path but no subcommand. This lets you run multiple commands without having to re-enter the database name every time.
+
+## litecp
+
+A document-copying tool that can:
+
+* Create a database from one or more JSON files
+* Import JSON file(s) into an existing database as documents
+* Export a database's documents into a JSON file or files
+* Push-replicate one local database file to another one
+* Push or pull from a remote database
+
+## litecorelog
+
+Reads a binary log file produced by `c4log_writeToBinaryFile`, and outputs it as plain text.

src/Tools/README.md

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+{
+  "object": {
+    "pins": [
+      {
+        "package": "CouchbaseLiteSwift",
+        "repositoryURL": "https://github.com/couchbase/couchbase-lite-swift-ee.git",
+        "state": {
+          "branch": null,
+          "revision": "25469e9284d810b72af88bfaebc54e24b2fcf46e",
+          "version": "3.0.0-beta02"
+        }
+      }
+    ]
+  },
+  "version": 1
+}