Full support for MIT license.

LICENSE

@@ -1,202 +1,9 @@
+MIT License
 
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+Copyright Patrick Garrity
-                           Version 2.0, January 2004
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README.md

@@ -1 +1,165 @@
-# gs-semver-sbt-plugin
+# sbt-gs-semver
+
+SemVer plugin for Garrity Software projects. Typically used for library
+development.
+
+- [Usage](#usage)
+    - [Adding the Plugin](#adding-the-plugin)
+    - [Updating the Build File](#updating-the-build-file)
+    - [Publishing a Release](#publishing-a-release)
+- [Supported Setting Keys](#supported-setting-keys)
+    - [`semVerSelected`](#semverselected)
+    - [`semVerMajor`](#semvermajor)
+    - [`semVerCurrent`](#semvercurrent)
+- [Supported Command Line Properties](#supported-command-line-properties)
+    - [The `release` Property](#the-release-property)
+    - [The `snapshot` Property](#the-snapshot-property)
+- [Supported Tasks](#supported-tasks)
+    - [`semVerInfo`](#semverinfo)
+- [Complete Example](#complete-example)
+
+## Usage
+
+This is an auto plugin that provides setting keys for version values.
+
+1. Add the plugin to your build.
+2. Update your build file to leverage the calculated SemVer values.
+3. Build releases using the `-Drelease` parameter.
+
+### Adding the Plugin
+
+**File: project/plugins.sbt**
+```scala
+resolvers += "Garrity Software Releases" at "https://maven.garrity.co/gs"
+
+addSbtPlugin("gs" % "sbt-gs-semver" % "0.1.0")
+```
+
+### Updating the Build File
+
+On any project within the build:
+
+```
+.settings(version := semVerSelected.value)
+.settings(name := s"$ProjectName-v${semVerMajor.value}")
+```
+
+### Publishing a Release
+
+If the `release` property is set, a release build will be produced. The valid
+values for `release` are:
+
+- `major`
+- `minor`
+- `patch`
+
+```
+sbt -Drelease=minor publish
+```
+
+## Supported Setting Keys
+
+These are available in `build.sbt` once the plugin is added.
+
+### `semVerSelected`
+
+This setting should be used as the project version. Assign the value of this
+setting to the `version` setting:
+
+```scala
+lazy val `example` = project
+  .in(file("."))
+  .settings(version := semVerSelected.value)
+```
+
+### `semVerMajor`
+
+This setting should be used to calculate library names that are version-aware.
+This practice helps protect against binary compatibility issues stemming from
+different library versions existing as transitive dependencies.
+
+```scala
+lazy val `example` = project
+  .in(file("."))
+  .settings(version := semVerSelected.value)
+```
+
+### `semVerCurrent`
+
+## Supported Command Line Properties
+
+Properties are provided via `-D` parameters: `-D<name>=<value>`.
+
+### The `release` Property
+
+Value may be any of: `major`, `minor`, `patch`. If this property is set, the
+build will calculate a semantic version by incrementing the selected version
+component. If this property is not defined, a pre-release build is assumed and
+the patch version is incremented.
+
+### The `snapshot` Property
+
+Used to force a pre-release build. If `-Dsnapshot=true` is specified, the
+`-SNAPSHOT` suffix will be appended to the version.
+
+### Command Line Examples
+
+Assume that the current version of the project is `1.2.3`.
+
+| Release   | Snapshot  | `semVerSelected` | `semVerMajor` |
+| --------- | --------- | ---------------- | ------------- |
+| <not set> | <not set> | `1.2.4-SNAPSHOT` | `1`           |
+| <not set> | `true`    | `1.2.4-SNAPSHOT` | `1`           |
+| `patch`   | <not set> | `1.2.4`          | `1`           |
+| `patch`   | `true`    | `1.2.4-SNAPSHOT` | `1`           |
+| `minor`   | <not set> | `1.3.0`          | `1`           |
+| `minor`   | `true`    | `1.3.0-SNAPSHOT` | `1`           |
+| `major`   | <not set> | `2.0.0`          | `2`           |
+| `major`   | `true`    | `2.0.0-SNAPSHOT` | `2`           |
+
+## Supported Tasks
+
+### `semVerInfo`
+
+Invoking `sbt semVerInfo` will emit diagnostic version information at the `info`
+log level via the SBT logger.
+
+```
+sbt -Drelease=minor -Dsnapshot=true semVerInfo
+...
+[info] [SemVer] Current: 0.1.0
+[info] [SemVer] Selected: 0.2.0-SNAPSHOT
+...
+```
+
+## Complete Example
+
+### `plugins.sbt`
+
+```scala
+resolvers += "Garrity Software Releases" at "https://maven.garrity.co/gs"
+
+addSbtPlugin("gs" % "sbt-gs-semver" % "0.1.0")
+```
+
+### `build.sbt`
+
+```scala
+val scala3: String = "3.3.1"
+
+ThisBuild / organizationName     := "garrity software"
+ThisBuild / organization         := "gs"
+ThisBuild / scalaVersion         := scala3
+ThisBuild / versionScheme        := Some("semver-spec")
+
+lazy val sharedSettings = Seq(
+  scalaVersion := scala3,
+  version      := semVerSelected.value
+)
+
+lazy val `gs-example` = project
+  .in(file("."))
+  .settings(sharedSettings)
+  .settings(publishSettings)
+  .settings(name := s"example-v${semVerMajor.value}")
+```

build.sbt

@@ -1,13 +1,13 @@
 ThisBuild / organizationName := "garrity software"
 ThisBuild / organization     := "gs"
-ThisBuild / versionScheme    := Some("early-semver")
+ThisBuild / versionScheme    := Some("semver-spec")
 
 externalResolvers := Seq(
   "Garrity Software Releases" at "https://maven.garrity.co/gs",
   "Garrity Software Maven Mirror" at "https://maven.garrity.co/releases"
 )
 
-val ProjectName: String = "gs-semver-sbt-plugin"
+val ProjectName: String = "sbt-gs-semver"
 val Description: String = "SBT 1.9.0+ plugin for Git-based semantic versioning."
 
 def getProperty[A](
@@ -47,7 +47,7 @@ lazy val publishSettings = Seq(
   ),
   description := Description,
   licenses := List(
-    "Apache 2.0" -> url("https://www.apache.org/licenses/LICENSE-2.0.html")
+    "MIT" -> url("https://garrity.co/MIT.html")
   ),
   homepage := Some(
     url(s"https://git.garrity.co/garrity-software/$ProjectName")

project/build.properties

@@ -1 +1 @@
-sbt.version=1.9.8
+sbt.version=1.9.9

src/main/scala/gs/Git.scala

@@ -33,8 +33,11 @@ object Git {
 
     if (result.exitCode != 0)
       SemVer.DefaultVersion
-    else
+    else {
-      SemVer.parse(result.out.text()).getOrElse(SemVer.DefaultVersion)
+      // Note: this value may contain newlines!
+      val processOutput = result.out.text().trim()
+      SemVer.parse(processOutput).getOrElse(SemVer.DefaultVersion)
+    }
   }
 
 }

src/main/scala/gs/SemVer.scala

@@ -43,12 +43,21 @@ case class SemVer(
   /** @return
     *   Copy of this SemVer with the major version incremented by 1.
     */
-  def incrementMajor(): SemVer = copy(major = this.major + 1)
+  def incrementMajor(): SemVer =
+    copy(
+      major = this.major + 1,
+      minor = 0,
+      patch = 0
+    )
 
   /** @return
     *   Copy of this SemVer with the minor version incremented by 1.
     */
-  def incrementMinor(): SemVer = copy(minor = this.minor + 1)
+  def incrementMinor(): SemVer =
+    copy(
+      minor = this.minor + 1,
+      patch = 0
+    )
 
   /** @return
     *   Copy of this SemVer with the patch version incremented by 1.

src/main/scala/gs/SemVerKeys.scala

@@ -31,12 +31,12 @@ object SemVerKeys {
     *
     * Consider the example current version of `1.2.3`:
     *
-    *   - `-Drelease=major`: `semVerSelected = 2.2.3`
+    *   - `-Drelease=major`: `semVerSelected = 2.0.0`
     *   - `-Drelease=major`, `-Dsnapshot=true`: `semVerSelected =
-    *     2.2.3-SNAPSHOT`
+    *     2.0.0-SNAPSHOT`
-    *   - `-Drelease=minor`: `semVerSelected = 1.3.3`
+    *   - `-Drelease=minor`: `semVerSelected = 1.3.0`
     *   - `-Drelease=minor`, `-Dsnapshot=true`: `semVerSelected =
-    *     1.3.3-SNAPSHOT`
+    *     1.3.0-SNAPSHOT`
     *   - `-Drelease=patch`: `semVerSelected = 1.2.4`
     *   - `-Drelease=patch`, `-Dsnapshot=true`: `semVerSelected =
     *     1.2.4-SNAPSHOT`
@@ -53,6 +53,20 @@ object SemVerKeys {
     "Major version selected for the current build. Depends on the release type and current version."
   )
 
+  /** SBT Setting for whether the current build is a pre-release (snapshot)
+    * build.
+    */
+  lazy val semVerSnapshot = settingKey[Boolean](
+    "True or false depending on whether the current build is a pre-release (snapshot) build."
+  )
+
+  /** SBT Setting that defines the filename for dumping the selected SemVer to a
+    * file.
+    */
+  lazy val semVerOutputFile = settingKey[Option[String]](
+    "Name of the file where the calculated SemVer will be stored (if requested)."
+  )
+
   /** Task which emits the current and selected versions at the informational
     * log level.
     */
@@ -60,4 +74,10 @@ object SemVerKeys {
     "Dump the calculated version information."
   )
 
+  /** Task which writes the selected SemVer to a file.
+    */
+  lazy val semVerWriteVersionToFile = taskKey[Unit](
+    "Write the selected SemVer to a file."
+  )
+
 }

src/main/scala/gs/SemVerPlugin.scala

@@ -1,5 +1,8 @@
 package gs
 
+import java.nio.charset.StandardCharsets
+import java.nio.file.Files
+import java.nio.file.Paths
 import sbt._
 
 object SemVerPlugin extends AutoPlugin {
@@ -9,6 +12,8 @@ object SemVerPlugin extends AutoPlugin {
 
   import autoImport._
 
+  val DefaultOutputFile: String = ".version"
+
   // Perform all version calculations and expose as a variable.
   lazy val semVerDefaults: Seq[Setting[_]] = {
     // The latest semantic version relevant to this project, calculated by
@@ -45,7 +50,9 @@ object SemVerPlugin extends AutoPlugin {
     Seq(
       semVerCurrent    := latestSemVer.toString(),
       semVerSelected   := selectedSemVer.render(isSnapshot),
-      semVerMajor    := selectedSemVer.major
+      semVerMajor      := selectedSemVer.major,
+      semVerSnapshot   := isSnapshot,
+      semVerOutputFile := Some(DefaultOutputFile)
     )
   }
 
@@ -58,6 +65,13 @@ object SemVerPlugin extends AutoPlugin {
       val log = Keys.streams.value.log
       log.info(s"[SemVer] Current: ${semVerCurrent.value}")
       log.info(s"[SemVer] Selected: ${semVerSelected.value}")
+    },
+    semVerWriteVersionToFile := {
+      val outputFile = semVerOutputFile.value.getOrElse(DefaultOutputFile)
+      Files.write(
+        Paths.get(outputFile),
+        semVerSelected.value.getBytes(StandardCharsets.UTF_8)
+      )
     }
   )