add coverage controller

.gitignore

@@ -31,4 +31,7 @@ cover*.out
 
 /tmp
 
-debug-compile.json
+debug-compile.json
+
+# not required packed modules
+/cmd/xgo/internal/vendir/github.com/xhd2015/go-coverage/diff/vscode/node_modules

cmd/xgo/coverage/cov_control/cov_control.go

@@ -0,0 +1,71 @@
+package cov_control
+
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/xhd2015/xgo/cmd/xgo/internal/vendir/github.com/xhd2015/lines-annotation/model/coverage"
+	"github.com/xhd2015/xgo/support/fileutil"
+)
+
+type Controller interface {
+	GetCoverage() (*coverage.Detail, error)
+	GetCoverageProfilePath() (string, error)
+	Reset() error
+	Refresh() error
+}
+
+func New(projectDir string) (Controller, error) {
+	absDir, err := filepath.Abs(projectDir)
+	if err != nil {
+		return nil, err
+	}
+	covDir := mapCovDir(getTmpDir(), absDir)
+	return &controller{
+		covDir:          covDir,
+		projectDir:      projectDir,
+		absProjectDir:   absDir,
+		coverageProfile: filepath.Join(covDir, "coverage.out"),
+	}, nil
+}
+
+type controller struct {
+	covDir          string
+	projectDir      string
+	absProjectDir   string
+	coverageProfile string
+}
+
+func (c *controller) GetCoverage() (*coverage.Detail, error) {
+	panic("unimplemented")
+}
+
+func (c *controller) GetCoverageProfilePath() (string, error) {
+	return c.coverageProfile, nil
+}
+
+func (c *controller) Refresh() error {
+	panic("unimplemented")
+}
+
+func (c *controller) Reset() error {
+	err := os.RemoveAll(c.coverageProfile)
+	if err != nil {
+		return err
+	}
+	return c.Refresh()
+}
+
+func mapCovDir(tmpDir string, absDir string) string {
+	return filepath.Join(tmpDir, "xgo", "coverage", fileutil.CleanSpecial(absDir))
+}
+
+func getTmpDir() string {
+	// try /tmp first for shorter path
+	tmpDir := "/tmp"
+	stat, statErr := os.Stat(tmpDir)
+	if statErr == nil && stat.IsDir() {
+		return tmpDir
+	}
+	return os.TempDir()
+}

cmd/xgo/internal/README.md

@@ -0,0 +1,2 @@
+# About
+An internal directory created by utilizing [go-vendir](https://github.com/xhd2015/go-vendir).

cmd/xgo/internal/gen.go

@@ -0,0 +1,3 @@
+package internal
+
+//go:generate vendir create --update --force ./src ./vendir

cmd/xgo/internal/src/go.mod

@@ -0,0 +1,9 @@
+module github.com/xhd2015/xgo/internal/src
+
+go 1.18
+
+require github.com/xhd2015/lines-annotation v0.0.3
+
+require github.com/xhd2015/go-coverage v1.0.41 // indirect
+
+replace github.com/xhd2015/lines-annotation => /Users/xhd2015/Projects/xhd2015/lines-annotation

cmd/xgo/internal/src/go.sum

@@ -0,0 +1,58 @@
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cmd/xgo/internal/src/manifest.go

@@ -0,0 +1,6 @@
+package src
+
+import (
+	_ "github.com/xhd2015/lines-annotation/model"
+	_ "github.com/xhd2015/lines-annotation/model/coverage"
+)