1 files changed, 117 insertions, 0 deletions
diff --git a/godep.redoGoMod.go b/godep.redoGoMod.go
new file mode 100644
index 0000000..2ce7676
--- /dev/null
+++ b/godep.redoGoMod.go
@@ -0,0 +1,117 @@
+package gitpb
+
+// does processing on the go.mod and go.sum files
+
+import (
+	"bufio"
+	"errors"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"go.wit.com/log"
+)
+
+// poor name perhaps. It's because in most of these
+// repos you can also type "make redomod" to do the same thing
+// since it's a Makefile task that is also useful to be able to run
+// from the command line
+func (repo *Repo) MakeRedomod() (bool, error) {
+	// unset the go development ENV var to generate release files
+	os.Unsetenv("GO111MODULE")
+	if ok, err := repo.strictRun([]string{"rm", "-f", "go.mod", "go.sum"}); !ok {
+		log.Warn("rm go.mod go.sum failed", err)
+		return ok, err
+	}
+	if ok, err := repo.strictRun([]string{"go", "mod", "init", repo.GoPath}); !ok {
+		log.Warn("go mod init failed", err)
+		return ok, err
+	}
+	if ok, err := repo.strictRun([]string{"go", "mod", "tidy"}); !ok {
+		log.Warn("go mod tidy failed", err)
+		return ok, err
+	}
+	log.Info("MakeRedomod() worked", repo.GoPath)
+
+	if repo.Exists("go.sum") {
+		// return the attempt to parse go.mod & go.sum
+		return repo.parseGoSum()
+	}
+	repo.GoDeps = nil
+	repo.GoPrimitive = false
+
+	ok, err := repo.isPrimativeGoMod()
+	if err != nil {
+		// this means this repo does not depend on any other package
+		log.Info("PRIMATIVE repo error:", repo.GoPath, "err =", err)
+		return false, err
+	}
+	if ok {
+		// this means the repo is primitive so there is no go.sum
+		repo.GoPrimitive = true
+		return true, nil
+	}
+	// this should never happen
+	return false, errors.New("MakeRedomod() logic failed")
+}
+
+// reads and parses the go.sum file
+func (repo *Repo) parseGoSum() (bool, error) {
+	// empty out what was there before
+	repo.GoDeps = nil
+	tmp := filepath.Join(repo.FullPath, "go.sum")
+	gosum, err := os.Open(tmp)
+	if err != nil {
+		log.Warn("missing go.sum", repo.FullPath)
+		return false, err
+	}
+	defer gosum.Close()
+
+	scanner := bufio.NewScanner(gosum)
+	log.Info("gosum:", tmp)
+	for scanner.Scan() {
+		line := strings.TrimSpace(scanner.Text())
+
+		parts := strings.Split(line, " ")
+		if len(parts) == 3 {
+			godep := strings.TrimSpace(parts[0])
+			version := strings.TrimSpace(parts[1])
+			if strings.HasSuffix(version, "/go.mod") {
+				version = strings.TrimSuffix(version, "/go.mod")
+			}
+			new1 := GoDep{
+				GoPath:  godep,
+				Version: version,
+			}
+			repo.AppendGoDep(&new1)
+			/*
+				found := repo.FindGoDepByPath(godep)
+				if found == nil {
+				currentversion, ok := deps[godep]
+				if ok {
+					// only use the first value found in the file?
+					// this shouldn't have been possible. this function should
+					// only be called from MakeRedomod()
+					// todo: make go things a seperate package so this function
+					// isn't exported?
+					if version != currentversion {
+						log.Warn("\tgo.sum ", godep, "had both", version, currentversion)
+					}
+				} else {
+					deps[godep] = version
+					log.Info("\t", godep, "=", version)
+				}
+			*/
+		} else {
+			// I've never seen this happen yet
+			panic(errors.New("go.sum invalid: " + line))
+			// return false, errors.New("go.sum invalid: " + line)
+		}
+	}
+
+	if err := scanner.Err(); err != nil {
+		repo.GoDeps = nil
+		return false, err
+	}
+	return true, nil
+}