cmd: Use correct HasPrefix function for paths

Updates #448

cobra/cmd/project.go

@@ -3,6 +3,7 @@ package cmd
 import (
 	"os"
 	"path/filepath"
+	"runtime"
 	"strings"
 )
 
@@ -37,7 +38,7 @@ func NewProject(projectName string) *Project {
 		}
 		for _, srcPath := range srcPaths {
 			goPath := filepath.Dir(srcPath)
-			if strings.HasPrefix(wd, goPath) {
+			if filepathHasPrefix(wd, goPath) {
 				p.absPath = filepath.Join(srcPath, projectName)
 				break
 			}
@@ -172,7 +173,7 @@ func (p *Project) SrcPath() string {
 	}
 
 	for _, srcPath := range srcPaths {
-		if strings.HasPrefix(p.absPath, srcPath) {
+		if filepathHasPrefix(p.absPath, srcPath) {
 			p.srcPath = srcPath
 			break
 		}
@@ -180,3 +181,15 @@ func (p *Project) SrcPath() string {
 
 	return p.srcPath
 }
+
+func filepathHasPrefix(path string, prefix string) bool {
+	if len(path) <= len(prefix) {
+		return false
+	}
+	if runtime.GOOS == "windows" {
+		// Paths in windows are case-insensitive.
+		return strings.EqualFold(path[0:len(prefix)], prefix)
+	}
+	return path[0:len(prefix)] == prefix
+
+}

cobra/cmd/project_test.go

@@ -1,7 +1,6 @@
 package cmd
 
 import (
-	"strings"
 	"testing"
 )
 
@@ -17,7 +16,7 @@ func TestFindExistingPackage(t *testing.T) {
 
 func hasGoPathPrefix(path string) bool {
 	for _, srcPath := range srcPaths {
-		if strings.HasPrefix(path, srcPath) {
+		if filepathHasPrefix(path, srcPath) {
 			return true
 		}
 	}

cobra/cmd/root.go

@@ -21,15 +21,18 @@ import (
 	"github.com/spf13/viper"
 )
 
-var cfgFile, projectBase, userLicense string // are used for flags
+var (
+	// Used for flags.
+	cfgFile, projectBase, userLicense string
 
-var rootCmd = &cobra.Command{
-	Use:   "cobra",
-	Short: "A generator for Cobra based Applications",
-	Long: `Cobra is a CLI library for Go that empowers applications.
+	rootCmd = &cobra.Command{
+		Use:   "cobra",
+		Short: "A generator for Cobra based Applications",
+		Long: `Cobra is a CLI library for Go that empowers applications.
 This application is a tool to generate the needed files
 to quickly create a Cobra application.`,
-}
+	}
+)
 
 // Execute executes the root command.
 func Execute() {