Initial commit

vendor/github.com/gobuffalo/buffalo-plugins/plugins/plugdeps/plugins.go

@@ -0,0 +1,98 @@
+package plugdeps
+
+import (
+	"io"
+	"sort"
+	"sync"
+
+	"github.com/BurntSushi/toml"
+	"github.com/pkg/errors"
+)
+
+// Plugins manages the config/buffalo-plugins.toml file
+// as well as the plugins available from the file.
+type Plugins struct {
+	plugins map[string]Plugin
+	moot    *sync.RWMutex
+}
+
+// Encode the list of plugins, in TOML format, to the reader
+func (plugs *Plugins) Encode(w io.Writer) error {
+	tp := tomlPlugins{
+		Plugins: plugs.List(),
+	}
+
+	if err := toml.NewEncoder(w).Encode(tp); err != nil {
+		return errors.WithStack(err)
+	}
+	return nil
+}
+
+// Decode the list of plugins, in TOML format, from the reader
+func (plugs *Plugins) Decode(r io.Reader) error {
+	tp := &tomlPlugins{
+		Plugins: []Plugin{},
+	}
+	if _, err := toml.DecodeReader(r, tp); err != nil {
+		return errors.WithStack(err)
+	}
+	for _, p := range tp.Plugins {
+		plugs.Add(p)
+	}
+	return nil
+}
+
+// List of dependent plugins listed in order of Plugin.String()
+func (plugs *Plugins) List() []Plugin {
+	m := map[string]Plugin{}
+	plugs.moot.RLock()
+	for _, p := range plugs.plugins {
+		m[p.key()] = p
+	}
+	plugs.moot.RUnlock()
+	var pp []Plugin
+	for _, v := range m {
+		pp = append(pp, v)
+	}
+	sort.Slice(pp, func(a, b int) bool {
+		return pp[a].Binary < pp[b].Binary
+	})
+	return pp
+}
+
+// Add plugin(s) to the list of dependencies
+func (plugs *Plugins) Add(pp ...Plugin) {
+	plugs.moot.Lock()
+	for _, p := range pp {
+		plugs.plugins[p.key()] = p
+	}
+	plugs.moot.Unlock()
+}
+
+// Remove plugin(s) from the list of dependencies
+func (plugs *Plugins) Remove(pp ...Plugin) {
+	plugs.moot.Lock()
+	for _, p := range pp {
+		delete(plugs.plugins, p.key())
+	}
+	plugs.moot.Unlock()
+}
+
+// New returns a configured *Plugins value
+func New() *Plugins {
+	plugs := &Plugins{
+		plugins: map[string]Plugin{},
+		moot:    &sync.RWMutex{},
+	}
+	plugs.Add(self)
+	return plugs
+}
+
+type tomlPlugins struct {
+	Plugins []Plugin `toml:"plugin"`
+}
+
+var self = Plugin{
+	Binary: "buffalo-plugins",
+	GoGet:  "github.com/gobuffalo/buffalo-plugins",
+}