feat: support build-flag for golang (#178)

Author: li-jin-gou

go.sum

@@ -47,6 +47,7 @@ type CollectOption struct {
 	NotNeedTest        bool
 	Excludes           []string
 	LoadByPackages     bool
+	BuildFlags         []string
 }
 
 type Collector struct {

lang/collect/collect.go

@@ -26,6 +26,7 @@ type Options struct {
 	CollectComment bool
 	NeedTest       bool
 	LoadByPackages bool
+	BuildFlags     []string
 }
 
 // type Option func(options *Options)

lang/golang/parser/option.go

@@ -182,10 +182,11 @@ func (p *GoParser) loadPackages(mod *Module, dir string, pkgPath PkgPath) (err e
 	}
 
 	cfg := &packages.Config{
-		Mode: baseOpts,
-		Fset: fset,
-		Dir:  dir,
-		Env:  append(os.Environ(), "GOSUMDB=off"),
+		Mode:       baseOpts,
+		Fset:       fset,
+		Dir:        dir,
+		Env:        append(os.Environ(), "GOSUMDB=off"),
+		BuildFlags: p.opts.BuildFlags,
 	}
 
 	if p.opts.NeedTest {

lang/golang/parser/pkg.go

@@ -214,6 +214,7 @@ func callGoParser(ctx context.Context, repoPath string, opts collect.CollectOpti
 		goopts.LoadByPackages = true
 	}
 	goopts.Excludes = opts.Excludes
+	goopts.BuildFlags = opts.BuildFlags
 	p := parser.NewParser(repoPath, repoPath, goopts)
 	repo, err := p.ParseRepo()
 	if err != nil {

lang/parse.go

@@ -188,6 +188,7 @@ Language Support:
 	cmd.Flags().BoolVar(&opts.LoadByPackages, "load-by-packages", false, "Load packages one by one instead of all at once (only works for Go, uses more memory).")
 	cmd.Flags().StringSliceVar(&opts.Excludes, "exclude", []string{}, "Files or directories to exclude from parsing (can be specified multiple times).")
 	cmd.Flags().StringVar(&opts.RepoID, "repo-id", "", "Custom identifier for this repository (useful for multi-repo scenarios).")
+	cmd.Flags().StringArrayVar(&opts.BuildFlags, "build-flag", []string{}, "Pass build flags to the Go parser (e.g. -tags=xxx).")
 	cmd.Flags().StringVar(&opts.TSConfig, "tsconfig", "", "Path to tsconfig.json file for TypeScript project configuration.")
 	cmd.Flags().StringSliceVar(&opts.TSSrcDir, "ts-src-dir", []string{}, "Additional TypeScript source directories (can be specified multiple times).")