resurrect code I deleted for 'git am'

windowPatches.go

@@ -5,12 +5,14 @@ package main
 
 import (
 	"fmt"
+	"os"
 	"path/filepath"
 	"sync"
 
 	"go.wit.com/gui"
 	"go.wit.com/lib/gadgets"
 	"go.wit.com/lib/protobuf/forgepb"
+	"go.wit.com/lib/protobuf/gitpb"
 	"go.wit.com/log"
 )
 
@@ -57,6 +59,30 @@ func makePatchesWin(patches *forgepb.Patches) *stdPatchTableWin {
 
 	grid.NewButton("reload", func() {
 	})
+	grid.NewButton("Apply All", func() {
+		var count int
+		all := patches.SortByFilename()
+		for all.Scan() {
+			p := all.Next()
+			rn := p.RepoNamespace
+			repo := me.forge.FindByGoPath(rn)
+			if repo == nil {
+				log.Info("Could not figure out repo path", rn)
+				return
+			}
+			filename, err := savePatch(p)
+			if err != nil {
+				log.Info("savePatch() failed", err)
+				return
+			}
+			count += 1
+			if err := applyPatch(repo, filename); err != nil {
+				log.Info("warn user of git am error", err)
+				return
+			}
+		}
+		log.Info("ALL PATCHES WORKED! count =", count)
+	})
 
 	// make a box at the bottom of the window for the protobuf table
 	dwin.box = dwin.win.Bottom.Box().SetProgName("TBOX")
@@ -101,3 +127,23 @@ func AddPatchesPB(tbox *gui.Node, pb *forgepb.Patches) *forgepb.PatchesTable {
 	t.ShowTable()
 	return t
 }
+
+func applyPatch(repo *gitpb.Repo, filename string) error {
+	cmd := []string{"git", "am", filename}
+	err := repo.RunVerbose(cmd)
+	return err
+}
+
+func savePatch(p *forgepb.Patch) (string, error) {
+	_, filen := filepath.Split(p.Filename)
+	tmpname := filepath.Join("/tmp", filen)
+	log.Info("saving as", tmpname, p.Filename)
+	raw, err := os.OpenFile(tmpname, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
+	if err != nil {
+		return "", err
+	}
+	raw.Write(p.Data)
+	raw.Close()
+
+	return tmpname, nil
+}