Add TargetBadges to add badges like we see on GitHub in READMEs

go.mod

@@ -2,4 +2,8 @@ module github.com/golistic/gomake
 
 go 1.20
 
-require github.com/golistic/xt v1.0.1 // indirect
+require (
+	github.com/golistic/shieldbadger v0.0.0-20230223210348-5649a4ba6aa9 // indirect
+	github.com/golistic/xt v1.0.1 // indirect
+	golang.org/x/mod v0.8.0 // indirect
+)

go.sum

@@ -1,2 +1,6 @@
+github.com/golistic/shieldbadger v0.0.0-20230223210348-5649a4ba6aa9 h1:NBSzSvgVJjhI37ytLLcHLkRA7UTR/P1L/0dm6EY4GoE=
+github.com/golistic/shieldbadger v0.0.0-20230223210348-5649a4ba6aa9/go.mod h1:9Ad43QCHXG87MxOV2rB668vLcEV/lC4qJZhs+VdEXJQ=
 github.com/golistic/xt v1.0.1 h1:prcwpL757GEu+dj6x2v6vxHkulkFdyQ3S1PqO+6ohPM=
 github.com/golistic/xt v1.0.1/go.mod h1:j1ZuWefyOD4HegoapgSjbXanA7X9YOKUeEB5gsEPgYg=
+golang.org/x/mod v0.8.0 h1:LUYupSeNrTNCGzR/hVBk2NHZO4hXcVaW1k4Qx7rjPx8=
+golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=

stock_badges.go

@@ -0,0 +1,71 @@
+// Copyright (c) 2023, Geert JM Vanderkelen
+
+package gomake
+
+import (
+	"flag"
+	"fmt"
+	"path/filepath"
+
+	"github.com/golistic/shieldbadger"
+)
+
+// TargetBadges creates badges using Shields.io suitable for showing on, for example,
+// GitHub. Badges are stored by default the folder `.badges` in the root of the
+// repository.
+// The definition of the badges is stored in JSON file `_badges/badges.json`.
+var TargetBadges = Target{
+	Name:         "badges",
+	PreMessages:  []string{"generating badges"},
+	PostMessages: []string{"done generating badges"},
+	HandleFlags: func(target *Target) (*flag.FlagSet, error) {
+		flagSet := flag.NewFlagSet(target.Name, flag.ExitOnError)
+		if target.Flags == nil {
+			target.Flags = map[string]any{}
+		}
+
+		var (
+			configFile string
+			destFolder string
+		)
+
+		flagSet.StringVar(&configFile, "config", filepath.Join("_badges", "badge.json"),
+			"Configuration file containing which badges to generate")
+		flagSet.StringVar(&destFolder, "dest", "_badges/",
+			"Folder in which fetched badges will be stored")
+
+		if err := flagSet.Parse(target.FlagArgs); err != nil {
+			return nil, err
+		}
+
+		if configFile != "" {
+			target.Flags["config"] = configFile
+		} else {
+			return nil, fmt.Errorf("config file is required")
+		}
+
+		if configFile != "" {
+			target.Flags["destFolder"] = destFolder
+		} else {
+			return nil, fmt.Errorf("destination folder is required")
+		}
+
+		return flagSet, nil
+	},
+	Do: func(target *Target) error {
+		if _, err := target.HandleFlags(target); err != nil {
+			return err
+		}
+
+		sb, err := shieldbadger.NewShieldBadger(target.Flags["config"].(string))
+		if err != nil {
+			return err
+		}
+
+		sb.FeedbackCallback = func(format string, a ...any) {
+			target.Maker.Printf(format, a...)
+		}
+
+		return sb.Fetch()
+	},
+}