Add Dart library detection

librarydetection/languages/Dart.go

@@ -0,0 +1,29 @@
+package languages
+
+import (
+	"regexp"
+
+	"github.com/codersrank-org/repo_info_extractor/v2/librarydetection"
+)
+
+// NewDartScriptAnalyzer constructor
+func NewDartScriptAnalyzer() librarydetection.Analyzer {
+	return &dartScriptAnalyzer{}
+}
+
+type dartScriptAnalyzer struct{}
+
+func (a *dartScriptAnalyzer) ExtractLibraries(contents string) ([]string, error) {
+	// for imports like this: import 'dart:developer' as dev; OR import 'dart:developer';
+	importRegex, err := regexp.Compile(`import '([:a-zA-Z0-9_-]+)'(?:|as)`)
+	if err != nil {
+		return nil, err
+	}
+	// for imports like this: import 'package:flutter/material.dart';
+	importRegex2, err := regexp.Compile(`import '([:a-zA-Z0-9_-]+)/[\.a-zA-Z0-9_-]+'`)
+	if err != nil {
+		return nil, err
+	}
+
+	return executeRegexes(contents, []*regexp.Regexp{importRegex, importRegex2}), nil
+}

librarydetection/languages/Dart_test.go

@@ -0,0 +1,34 @@
+package languages_test
+
+import (
+	"io/ioutil"
+
+	. "github.com/onsi/ginkgo"
+
+	"github.com/codersrank-org/repo_info_extractor/v2/librarydetection/languages"
+)
+
+var _ = Describe("DartLibraryDetection", func() {
+	fixture, err := ioutil.ReadFile("./fixtures/dart.fixture")
+	if err != nil {
+		panic(err)
+	}
+
+	expectedLibraries := []string{
+		"dart:async",
+		"dart:developer",
+		"package:flutter",
+	}
+
+	analyzer := languages.NewDartScriptAnalyzer()
+
+	Describe("Extract Dart Libraries", func() {
+		It("Should be able to extract libraries", func() {
+			libs, err := analyzer.ExtractLibraries(string(fixture))
+			if err != nil {
+				panic(err)
+			}
+			assertSameUnordered(libs, expectedLibraries)
+		})
+	})
+})

librarydetection/languages/fixtures/dart.fixture

@@ -0,0 +1,3 @@
+import 'dart:async';
+import 'dart:developer' as dev;
+import 'package:flutter/material.dart';