feat: azure functions segment

docs/docs/segment-azfunc.md

@@ -0,0 +1,35 @@
+---
+id: azfunc
+title: Azure functions
+sidebar_label: Azure functions
+---
+
+## What
+
+Display the currently active Azure functions CLI version.
+
+## Sample Configuration
+
+```json
+{
+    "type": "azfunc",
+    "style": "powerline",
+    "powerline_symbol": "",
+    "foreground": "#ffffff",
+    "background": "#FEAC19",
+    "properties": {
+        "prefix": " \uf0e7 ",
+        "display_version": true,
+        "display_mode": "files"
+    }
+}
+```
+
+## Properties
+
+- display_version: `boolean` - display the Azure functions CLI version - defaults to `true`
+- display_error: `boolean` - show the error context when failing to retrieve the version information - defaults to `true`
+- missing_command_text: `string` - text to display when the command is missing - defaults to empty
+- display_mode: `string` - determines when the segment is displayed
+  - `always`: the segment is always displayed
+  - `files`: the segment is only displayed when a `host.json` or `local.settings.json` files is present (default)

docs/sidebars.js

@@ -11,6 +11,7 @@ module.exports = {
       items: [
         "aws",
         "az",
+        "azfunc",
         "battery",
         "command",
         "dotnet",

src/segment.go

@@ -98,6 +98,8 @@ const (
 	Java SegmentType = "java"
 	// PoshGit writes the posh git prompt
 	PoshGit SegmentType = "poshgit"
+	// AZFunc writes current AZ func version
+	AZFunc SegmentType = "azfunc"
 )
 
 func (segment *Segment) string() string {
@@ -222,6 +224,7 @@ func (segment *Segment) mapSegmentWithWriter(env environmentInfo) error {
 		Aws:           &aws{},
 		Java:          &java{},
 		PoshGit:       &poshgit{},
+		AZFunc:        &azfunc{},
 	}
 	if writer, ok := functions[segment.Type]; ok {
 		props := &properties{

src/segment_az_functions.go

@@ -0,0 +1,28 @@
+package main
+
+type azfunc struct {
+	language *language
+}
+
+func (az *azfunc) string() string {
+	return az.language.string()
+}
+
+func (az *azfunc) init(props *properties, env environmentInfo) {
+	az.language = &language{
+		env:        env,
+		props:      props,
+		extensions: []string{"host.json", "local.settings.json"},
+		commands: []*cmd{
+			{
+				executable: "func",
+				args:       []string{"--version"},
+				regex:      `(?P<version>.+)`,
+			},
+		},
+	}
+}
+
+func (az *azfunc) enabled() bool {
+	return az.language.enabled()
+}