package upload

import (
	"bytes"
	"net/http"
	"os"
	"path/filepath"
	"regexp"
	"strings"
	"time"
)

var (
	dateRE     = regexp.MustCompile(`(\d\d\d\d-\d\d-\d\d)[.]json$`)
	dateFormat = "2006-01-02"
	// TODO(rfindley): use dateFormat throughout.
)

// uploadReportDate returns the date component of the upload file name, or "" if the
// date was unmatched.
func (u *uploader) uploadReportDate(fname string) time.Time {