// syncedErrs couples GoPath's error handling with errStore's error handling.
// When the GoPath contained an error, it will be stored in the errStore, so
// that all following ops become no-ops.
// When however the errStore contains an error, an errorneous GoPath will be
// returned.
func (s *errStore) syncedErrs(p gopath.GoPath) gopath.GoPath {
if s.hasErr() {
return gopath.FromErr(s.err)
}
if p.HasErr() {
s.setErr(p.Err())
}
return p
}
// NewFilesystemLoader creates a new instance with templates located in the
// given root path.
func NewFilesystemLoader(root gopath.GoPath) *FilesystemLoader {
if root.HasErr() {
panic(fmt.Sprintf("NewFilesystemLoader: root has error: %s", root.Err()))
}
if !root.IsExists() {
panic(fmt.Sprintf("NewFilesystemLoader: root %s does not exist", root.Path()))
}
watcher, err := fsnotify.NewWatcher()
if err != nil {
panic(fmt.Sprintf("NewFilesystemLoader: can't open watcher: %s", err))
}
var loader = &FilesystemLoader{
root,
watcher,
make(map[string]chan *template.Template),
make(map[string]string)}
go loader.processEvents()
return loader
}
// assertPathValidForWriteAccess sets the error flag when the path may not be
// opened for writing by this process.
func (i *pathIO) assertPathValidForWriteAccess(p gopath.GoPath) {
if i.hasErr() {
return
}
if p.HasErr() {
i.setErr(p.Err())
return
}
if p.IsExists() {
if !p.IsRegular() || !isPathWriteable(p) {
i.setErr(store.NewAccessDeniedError(fmt.Sprintf(
"path '%s' with mode %s denotes no regular file or no writeable directory",
p.Path(), p.FileMode())))
}
} else {
var d = p.Dir()
if !isPathWriteable(d) {
i.setErr(store.NewAccessDeniedError(
"parent directory of '" + p.Path() + "' is not writeable"))
}
}
}