func TestIsIgnoredFile(t *testing.T) {
home := osutil.HomeDir()
fullpath := filepath.Join(home, "Downloads", "pony.jpg")
var wantIgnored = map[string]bool{
filepath.Join(home, filepath.FromSlash("Downloads/pony.jpg")): true,
filepath.Join(home, filepath.FromSlash("Downloads/pony.*")): true,
filepath.Join(home, filepath.FromSlash("Downloads/*.jpg")): true,
filepath.Join(home, filepath.FromSlash("Downloads/*")): true,
"*.jpg": true,
"pony.*": true,
"*.foo": false,
"foo.*": false,
filepath.Join(home, "Downloads"): true,
filepath.Join(home, "Down"): false,
filepath.FromSlash("~/Downloads/pony.jpg"): true,
filepath.FromSlash("~/Downloads/pony.*"): true,
filepath.FromSlash("~/Downloads/*.jpg"): true,
filepath.FromSlash("~/Downloads"): true,
filepath.FromSlash("~/Down"): false,
filepath.FromSlash("~/DownloadsAndMore"): false,
home: true,
"Downloads": true,
"Down": false,
}
for pattern, want := range wantIgnored {
ignoreChecker := newIgnoreChecker([]string{pattern})
if ignoreChecker(fullpath) != want {
t.Errorf("%v not ignored; did not match %v", fullpath, pattern)
}
}
}
// newIgnoreChecker uses ignoredFiles to build and return a func that returns whether the file path argument should be ignored. See IsIgnoredFile for the ignore rules.
func newIgnoreChecker(ignoredFiles []string) func(path string) (shouldIgnore bool) {
var fns []func(string) bool
home := osutil.HomeDir()
// copy of ignoredFiles for us to mutate
ignFiles := append([]string(nil), ignoredFiles...)
for k, v := range ignFiles {
if strings.HasPrefix(v, filepath.FromSlash("~/")) {
ignFiles[k] = filepath.Join(home, v[2:])
}
}
// We cache the ignoredFiles patterns in 3 categories (not necessarily exclusive):
// 1) shell patterns
// 3) absolute paths
// 4) paths components
for _, pattern := range ignFiles {
_, err := filepath.Match(pattern, "whatever")
if err == nil {
fns = append(fns, func(v string) bool { return isShellPatternMatch(pattern, v) })
}
}
for _, pattern := range ignFiles {
if filepath.IsAbs(pattern) {
fns = append(fns, func(v string) bool { return hasDirPrefix(filepath.Clean(pattern), v) })
} else {
fns = append(fns, func(v string) bool { return hasComponent(filepath.Clean(pattern), v) })
}
}
return func(path string) bool {
for _, fn := range fns {
if fn(path) {
return true
}
}
return false
}
}