Start plugin support and plugin manager

cmd/micro/manager/fetch.go

@@ -0,0 +1,46 @@
+package manager
+
+import (
+	"io/ioutil"
+	"net/http"
+	"path"
+
+	"github.com/zyedidia/micro/cmd/micro/config"
+	git "gopkg.in/src-d/go-git.v4"
+)
+
+// NewPluginInfoFromUrl creates a new PluginInfo from a URL by fetching
+// the data at that URL and parsing the JSON (running a GET request at
+// the URL should return the JSON for a plugin info)
+func NewPluginInfoFromUrl(url string) (*PluginInfo, error) {
+	resp, err := http.Get(url)
+	if err != nil {
+		return nil, err
+	}
+
+	defer resp.Body.Close()
+	dat, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	return NewPluginInfo(dat)
+}
+
+// FetchRepo downloads this plugin's git repository
+func (i *PluginInfo) FetchRepo() error {
+	_, err := git.PlainClone(path.Join(config.ConfigDir, "plugin", i.Name), false, &git.CloneOptions{
+		URL:      i.Repo,
+		Progress: nil,
+	})
+
+	return err
+}
+
+func (i *PluginInfo) FetchDeps() error {
+	return nil
+}
+
+func (i *PluginInfo) PostInstallHooks() error {
+	return nil
+}