Merge pull request #2 from kernle32dll/version-test

Add version command

.travis.yml

@@ -23,8 +23,10 @@ env:
     - GO111MODULE=on
 
 script:
-  - if [ "$TRAVIS_OS_NAME" = "windows" ]; then CGO_ENABLED=0 go build -ldflags="-w -s" -o ew-$TRAVIS_OS_NAME-$TRAVIS_CPU_ARCH.exe . ; fi
-  - if [ "$TRAVIS_OS_NAME" != "windows" ]; then CGO_ENABLED=0 go build -ldflags="-w -s" -o ew-$TRAVIS_OS_NAME-$TRAVIS_CPU_ARCH . ; fi
+  - if [ "$TRAVIS_OS_NAME" = "windows" ]; then CGO_ENABLED=0 go build -ldflags="-w -s -X 'github.com/kernle32dll/ew/internal/cmd.buildBranch=$TRAVIS_BRANCH'" -o ew-$TRAVIS_OS_NAME-$TRAVIS_CPU_ARCH.exe . ; fi
+  - if [ "$TRAVIS_OS_NAME" != "windows" ]; then CGO_ENABLED=0 go build -ldflags="-w -s -X 'github.com/kernle32dll/ew/internal/cmd.buildDate=$(date -u '+%Y/%m/%d %H:%M:%S')' -X 'github.com/kernle32dll/ew/internal/cmd.buildBranch=$TRAVIS_BRANCH'" -o ew-$TRAVIS_OS_NAME-$TRAVIS_CPU_ARCH . ; fi
+  - if [ "$TRAVIS_OS_NAME" = "windows" ]; then ./ew-$TRAVIS_OS_NAME-$TRAVIS_CPU_ARCH.exe --version ; fi
+  - if [ "$TRAVIS_OS_NAME" != "windows" ]; then ./ew-$TRAVIS_OS_NAME-$TRAVIS_CPU_ARCH --version ; fi
   - go test -v -race -coverprofile=coverage.txt -covermode=atomic ./...
 
 after_success:

README.md

@@ -41,6 +41,8 @@ COMMAND                           | DESCRIPTION
 ew                                |   list all paths, grouped by their tags
 ew help                           |   displays this help
 ew --help                         |   displays this help (alias for ew help)
+ew version                        |   displays version and build time (if applicable)
+ew --version                      |   displays version and build time (if applicable) (alias for ew version)
 ew migrate                        |   migrate from mixu/gr config, and keep json format
 ew migrate --yaml                 |   migrate from mixu/gr config, and use new yaml format
 ew paths                          |   list all paths (alias for ew paths list)

internal/cmd/cmd_help.go

@@ -25,6 +25,10 @@ func NewHelpCommand(
 func (c HelpCommand) Execute() error {
 	fmt.Fprintln(c.output, "EW - (run things) e(very)w(here)")
 	fmt.Fprintln(c.output, "Original author: Björn Gerdau")
+
+	fmt.Fprint(c.output, "Version: ")
+	NewVersionCommand(c.output).Execute()
+
 	fmt.Fprintln(c.output)
 	fmt.Fprintln(c.output, "Available commands:")
 
@@ -33,6 +37,8 @@ func (c HelpCommand) Execute() error {
 		{"ew", "list all paths, grouped by their tags"},
 		{"ew help", "displays this help"},
 		{"ew --help", ""},
+		{"ew version", "displays version and build time (if applicable)"},
+		{"ew --version", ""},
 		{"ew migrate", "migrate from mixu/gr config, and keep json format"},
 		{"ew migrate --yaml", "migrate from mixu/gr config, and use new yaml format"},
 		{"ew paths", "list all paths (alias for ew paths list)"},

internal/cmd/cmd_version.go

@@ -0,0 +1,39 @@
+package cmd
+
+import (
+	"fmt"
+	"io"
+)
+
+var (
+	buildBranch string
+	buildDate   string
+)
+
+// VersionCommand prints out the CLI help.
+type VersionCommand struct {
+	output io.Writer
+}
+
+// NewVersionCommand creates a new VersionCommand.
+func NewVersionCommand(
+	output io.Writer,
+) *VersionCommand {
+	return &VersionCommand{
+		output: output,
+	}
+}
+
+func (c VersionCommand) Execute() error {
+	if buildBranch == "" {
+		buildBranch = "master"
+	}
+
+	if buildDate != "" {
+		fmt.Fprintf(c.output, "%s built %s\n", buildBranch, buildDate)
+	} else {
+		fmt.Fprintln(c.output, buildBranch)
+	}
+
+	return nil
+}

internal/cmd/parser.go

@@ -26,6 +26,8 @@ func ParseCommand(output io.Writer, conf internal.Config, args []string) (Comman
 	switch args[0] {
 	case "help", "--help":
 		return NewHelpCommand(output), nil
+	case "version", "--version":
+		return NewVersionCommand(output), nil
 	case "migrate":
 		return NewMigrateCommand(output, len(args) == 2 && args[1] == "--yaml"), nil
 	case "paths":