Add VERSION_STATIC for external version resolution

External version resolution (#17)

README.md

@@ -31,6 +31,7 @@ jobs:
           PROJECT_FILE_PATH: Core/Core.csproj # Relative to repository root
           # VERSION_FILE_PATH: Directory.Build.props # Filepath with version info, relative to repository root. Defaults to project file
           # VERSION_REGEX: <Version>(.*)<\/Version> # Regex pattern to extract version info in a capturing group
+          # VERSION_STATIC: Bypasses version resolution; useful for external providers like Nerdbank.GitVersioning
           # TAG_COMMIT: true # Flag to enable / disalge git tagging
           # TAG_FORMAT: v* # Format of the git tag, [*] gets replaced with version
           # NUGET_KEY: ${{secrets.NUGET_API_KEY}} # nuget.org API key
@@ -48,6 +49,7 @@ Input | Default Value | Description
 PROJECT_FILE_PATH | | File path of the project to be packaged, relative to repository root
 VERSION_FILE_PATH | `[PROJECT_FILE_PATH]` | File path containing version info, relative to repository root
 VERSION_REGEX | `<Version>(.*)<\/Version>` | Regex pattern to extract version info in a capturing group
+VERSION_STATIC| | Bypasses version resolution; useful for external providers like Nerdbank.GitVersioning
 TAG_COMMIT | `true` | Flag to enable / disable git tagging
 TAG_FORMAT | `v*` | `[*]` is a placeholder for the actual project version
 NUGET_KEY | | API key to authorize the package upload to nuget.org

action.yml

@@ -13,6 +13,9 @@ inputs:
         description: Regex (with version in a capturing group) to extract the version from `VERSION_FILE_PATH`
         required: false
         default: <Version>(.*)<\/Version>
+    VERSION_STATIC:
+        description: Bypasses version resolution; useful for external providers like Nerdbank.GitVersioning
+        required: false
     TAG_COMMIT:
         description: Whether to create a tag when there's a version change
         required: false

index.js

@@ -8,6 +8,7 @@ class Action {
         this.PROJECT_FILE_PATH = process.env.INPUT_PROJECT_FILE_PATH
         this.VERSION_FILE_PATH = process.env.INPUT_VERSION_FILE_PATH || process.env.VERSION_FILE_PATH
         this.VERSION_REGEX = new RegExp(process.env.INPUT_VERSION_REGEX || process.env.VERSION_REGEX)
+        this.VERSION_STATIC = process.env.INPUT_VERSION_STATIC || process.env.VERSION_STATIC
         this.TAG_COMMIT = JSON.parse(process.env.INPUT_TAG_COMMIT || process.env.TAG_COMMIT)
         this.TAG_FORMAT = process.env.INPUT_TAG_FORMAT || process.env.TAG_FORMAT
         this.NUGET_KEY = process.env.INPUT_NUGET_KEY || process.env.NUGET_KEY
@@ -85,17 +86,22 @@ class Action {
     run() {
         if (!this.PROJECT_FILE_PATH)
             this._fail("😭 project file not given")
-
         this.PROJECT_FILE_PATH = this._resolveIfExists(this.PROJECT_FILE_PATH, "😭 project file not found")
-        this.VERSION_FILE_PATH = !this.VERSION_FILE_PATH ? this.PROJECT_FILE_PATH : this._resolveIfExists(this.VERSION_FILE_PATH, "😭 version file not found")
+
+        let CURRENT_VERSION = ""
+
+        if (!this.VERSION_STATIC) {
+            this.VERSION_FILE_PATH = !this.VERSION_FILE_PATH ? this.PROJECT_FILE_PATH : this._resolveIfExists(this.VERSION_FILE_PATH, "😭 version file not found")
 
-        const FILE_CONTENT = fs.readFileSync(this.VERSION_FILE_PATH, { encoding: "utf-8" }),
-            VERSION_INFO = this.VERSION_REGEX.exec(FILE_CONTENT)
+            const FILE_CONTENT = fs.readFileSync(this.VERSION_FILE_PATH, { encoding: "utf-8" }),
+                VERSION_INFO = this.VERSION_REGEX.exec(FILE_CONTENT)
 
-        if (!VERSION_INFO)
-            this._fail("😢 unable to extract version info")
+            if (!VERSION_INFO)
+                this._fail("😢 unable to extract version info!")
 
-        const CURRENT_VERSION = VERSION_INFO[1]
+            CURRENT_VERSION = VERSION_INFO[1]
+        } else
+            CURRENT_VERSION = this.VERSION_STATIC
 
         if (!this.PACKAGE_NAME)
             this.PACKAGE_NAME = path.basename(this.PROJECT_FILE_PATH).split(".").slice(0, -1).join(".")