t.Fatalf("os.WriteFile(%s) failed: %v", path, err)
	}
}

func writePkgConfig(t *testing.T, outdir, tag, ppath, pname string, gran string, mpath string) string {
	incfg := filepath.Join(outdir, tag+"incfg.txt")
	outcfg := filepath.Join(outdir, "outcfg.txt")
	p := covcmd.CoverPkgConfig{
		PkgPath:      ppath,
		PkgName:      pname,
		Granularity:  gran,
		OutConfig:    outcfg,
		EmitMetaFile: mpath,
	}
	data, err := json.Marshal(p)

//
// If p and q are in different files, p is before q if the filename
// of p sorts lexicographically before the filename of q.
func (p Pos) Cmp(q Pos) int {
	pname := p.RelFilename()
	qname := q.RelFilename()
	switch {
	case pname < qname:
		return -1
	case pname > qname:
		return +1
	}

	pline := p.Line()
	qline := q.Line()
	switch {
	case pline < qline:
		return -1
	case pline > qline:
		return +1
	}

	s := string(n)
	return ComponentName(strings.ToUpper(s[0:1]) + s[1:])
}

// UserFacingComponentName returns the name of the given component that should be displayed to the user in high
// level CLIs (like progress log).
func UserFacingComponentName(name ComponentName) string {
	ret, ok := userFacingComponentNames[name]
	if !ok {
		return "Unknown"
	}
	return ret

	} else if match[1] > today {
		u.logger.Printf("Report date for %q is later than today (%s)", filepath.Base(fname), today)
		return // report is in the future, which shouldn't happen
	}
	buf, err := os.ReadFile(fname)
	if err != nil {
		u.logger.Printf("%v reading %s", err, fname)
		return
	}
	if u.uploadReportContents(fname, buf) {
		// anything left to do?
	}
}

}

func (u *uploader) parseCountFile(fname string) (*counter.File, error) {
	u.cache.mu.Lock()
	defer u.cache.mu.Unlock()
	if u.cache.m == nil {
		u.cache.m = make(map[string]*counter.File)
	}
	if f, ok := u.cache.m[fname]; ok {
		return f, nil
	}
	buf, err := os.ReadFile(fname)
	if err != nil {
		return nil, fmt.Errorf("parse ReadFile: %v for %s", err, fname)
	}
	f, err := counter.Parse(fname, buf)

	}
	return editSettings(fname, func(s *settings) error {
		for i, c := range s.Configs {
			if c.Name == name {
				s.Configs[i].config = cfg
				return nil
			}
		}
		s.Configs = append(s.Configs, namedConfig{Name: name, config: cfg})
		return nil
	})
}

// removeConfig removes config from fname.
func removeConfig(fname, config string) error {
	return editSettings(fname, func(s *settings) error {

		return nil, nil
	}

	// Find assembly files to work on.
	var sfiles []string
	for _, fname := range pass.OtherFiles {
		if strings.HasSuffix(fname, ".s") && pass.Pkg.Path() != "runtime" {
			sfiles = append(sfiles, fname)
		}
	}

	for _, fname := range sfiles {
		content, tf, err := analysisutil.ReadFile(pass, fname)
		if err != nil {
			return nil, err
		}

		lines := strings.SplitAfter(string(content), "\n")

	var need = make(map[string]bool)
	if name == "." {
		elem = "."
		for fname, f := range fsys {
			i := strings.Index(fname, "/")
			if i < 0 {
				if fname != "." {
					list = append(list, mapFileInfo{fname, f})
				}
			} else {
				need[fname[:i]] = true
			}
		}
	} else {
		elem = name[strings.LastIndex(name, "/")+1:]
		prefix := name + "/"
		for fname, f := range fsys {

	// Load specified file.
	loadFile := func(fname string) string {
		data, err := embeddedFiles.ReadFile(fname)
		if err != nil {
			fmt.Fprintf(os.Stderr, "internal/driver: embedded file %q not found\n",
				fname)
			os.Exit(1)
		}
		return string(data)
	}
	loadCSS := func(fname string) string {
		return `<style type="text/css">` + "\n" + loadFile(fname) + `</style>` + "\n"
	}
	loadJS := func(fname string) string {

func exportError(ctx context.Context, err error, fname, entity string) APIError {
	if entity == "" {
		return toAPIError(ctx, fmt.Errorf("error exporting %s with: %w", fname, err))
	}
	return toAPIError(ctx, fmt.Errorf("error exporting %s from %s with: %w", entity, fname, err))
}

// wraps import error for more context
func importError(ctx context.Context, err error, fname, entity string) APIError {
	if entity == "" {