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package lib
import (
"fmt"
"os"
"path/filepath"
"regexp"
"strings"
"git.sr.ht/~rjarry/aerc/models"
"github.com/emersion/go-maildir"
)
type MaildirStore struct {
root string
maildirpp bool // whether to use Maildir++ directory layout
}
func NewMaildirStore(root string, maildirpp bool) (*MaildirStore, error) {
f, err := os.Open(root)
if err != nil {
return nil, err
}
defer f.Close()
s, err := f.Stat()
if err != nil {
return nil, err
}
if !s.IsDir() {
return nil, fmt.Errorf("Given maildir '%s' not a directory", root)
}
return &MaildirStore{
root: root, maildirpp: maildirpp,
}, nil
}
func (s *MaildirStore) FolderMap() (map[string]maildir.Dir, error) {
folders := make(map[string]maildir.Dir)
if s.maildirpp {
// In Maildir++ layout, INBOX is the root folder
folders["INBOX"] = maildir.Dir(s.root)
}
err := filepath.Walk(s.root, func(path string, info os.FileInfo, err error) error {
if err != nil {
return fmt.Errorf("Invalid path '%s': error: %w", path, err)
}
if !info.IsDir() {
return nil
}
// Skip maildir's default directories
n := info.Name()
if n == "new" || n == "tmp" || n == "cur" {
return filepath.SkipDir
}
// Get the relative path from the parent directory
dirPath, err := filepath.Rel(s.root, path)
if err != nil {
return err
}
// Skip the parent directory
if dirPath == "." {
return nil
}
// Drop dirs that lack {new,tmp,cur} subdirs
for _, sub := range []string{"new", "tmp", "cur"} {
if _, err := os.Stat(filepath.Join(path, sub)); os.IsNotExist(err) {
return nil
}
}
if s.maildirpp {
// In Maildir++ layout, mailboxes are stored in a single directory
// and prefixed with a dot, and subfolders are separated by dots.
if !strings.HasPrefix(dirPath, ".") {
return filepath.SkipDir
}
dirPath = strings.TrimPrefix(dirPath, ".")
dirPath = strings.ReplaceAll(dirPath, ".", "/")
folders[dirPath] = maildir.Dir(path)
// Since all mailboxes are stored in a single directory, don't
// recurse into subdirectories
return filepath.SkipDir
}
folders[dirPath] = maildir.Dir(path)
return nil
})
return folders, err
}
// Folder returns a maildir.Dir with the specified name inside the Store
func (s *MaildirStore) Dir(name string) maildir.Dir {
if s.maildirpp {
// Use Maildir++ layout
if name == "INBOX" {
return maildir.Dir(s.root)
}
return maildir.Dir(filepath.Join(s.root, "."+strings.ReplaceAll(name, "/", ".")))
}
return maildir.Dir(filepath.Join(s.root, name))
}
// uidReg matches filename encoded UIDs in maildirs synched with mbsync or
// OfflineIMAP
var uidReg = regexp.MustCompile(`,U=\d+`)
func StripUIDFromMessageFilename(basename string) string {
return uidReg.ReplaceAllString(basename, "")
}
var MaildirToFlag = map[maildir.Flag]models.Flags{
maildir.FlagReplied: models.AnsweredFlag,
maildir.FlagSeen: models.SeenFlag,
maildir.FlagTrashed: models.DeletedFlag,
maildir.FlagFlagged: models.FlaggedFlag,
maildir.FlagDraft: models.DraftFlag,
maildir.FlagPassed: models.ForwardedFlag,
}
var FlagToMaildir = map[models.Flags]maildir.Flag{
models.AnsweredFlag: maildir.FlagReplied,
models.SeenFlag: maildir.FlagSeen,
models.DeletedFlag: maildir.FlagTrashed,
models.FlaggedFlag: maildir.FlagFlagged,
models.DraftFlag: maildir.FlagDraft,
models.ForwardedFlag: maildir.FlagPassed,
}
func FromMaildirFlags(maildirFlags []maildir.Flag) models.Flags {
var flags models.Flags
for _, maildirFlag := range maildirFlags {
if flag, ok := MaildirToFlag[maildirFlag]; ok {
flags |= flag
}
}
return flags
}
func ToMaildirFlags(flags models.Flags) []maildir.Flag {
var maildirFlags []maildir.Flag
for flag, maildirFlag := range FlagToMaildir {
if flags.Has(flag) {
maildirFlags = append(maildirFlags, maildirFlag)
}
}
return maildirFlags
}
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