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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,158 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "errors" | ||
| "fmt" | ||
| "io/fs" | ||
| "math" | ||
| "os/user" | ||
| "strconv" | ||
| "syscall" | ||
| "time" | ||
|
|
||
| "github.com/expr-lang/expr" | ||
| "github.com/expr-lang/expr/vm" | ||
| ) | ||
|
|
||
| func compile(code string) *vm.Program { | ||
| p, err := expr.Compile(code, expr.Env(Env{})) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| return p | ||
| } | ||
|
|
||
| type Env struct { | ||
| Files []fs.DirEntry `expr:"files"` | ||
| CurrentFile fs.DirEntry `expr:"current_file"` | ||
| } | ||
|
|
||
| func (e Env) Sprintf(format string, a ...any) string { | ||
| return fmt.Sprintf(format, a...) | ||
| } | ||
|
|
||
| func (e Env) PadLeft(s string, n int) string { | ||
| return fmt.Sprintf("%*s", n, s) | ||
| } | ||
|
|
||
| func (e Env) PadRight(s string, n int) string { | ||
| return fmt.Sprintf("%*s", n, s) | ||
| } | ||
|
|
||
| func (e Env) Size() string { | ||
| info, err := e.CurrentFile.Info() | ||
| if err != nil { | ||
| return "N/A" | ||
| } | ||
| size := float64(info.Size()) | ||
| if size == 0 { | ||
| return "0B" | ||
| } | ||
| units := []string{"B", "KB", "MB", "GB", "TB", "PB", "EB"} | ||
| base := math.Log(size) / math.Log(1024) | ||
| unitIndex := int(math.Floor(base)) | ||
| if unitIndex >= len(units) { | ||
| unitIndex = len(units) - 1 | ||
| } | ||
| value := size / math.Pow(1024, float64(unitIndex)) | ||
| if unitIndex == 0 { | ||
| return fmt.Sprintf("%.0f%s", value, units[unitIndex]) | ||
| } | ||
| return fmt.Sprintf("%.1f%s", value, units[unitIndex]) | ||
| } | ||
|
|
||
| func (e Env) Mode() string { | ||
| info, err := e.CurrentFile.Info() | ||
| if err != nil { | ||
| return "?????????" | ||
| } | ||
|
|
||
| mode := info.Mode() | ||
|
|
||
| result := make([]byte, 10) | ||
|
|
||
| switch { | ||
| case mode.IsDir(): | ||
| result[0] = 'd' | ||
| case mode&fs.ModeSymlink != 0: | ||
| result[0] = 'l' | ||
| case mode&fs.ModeSocket != 0: | ||
| result[0] = 's' | ||
| case mode&fs.ModeNamedPipe != 0: | ||
| result[0] = 'p' | ||
| case mode&fs.ModeCharDevice != 0: | ||
| result[0] = 'c' | ||
| case mode&fs.ModeDevice != 0: | ||
| result[0] = 'b' | ||
| default: | ||
| result[0] = '-' | ||
| } | ||
|
|
||
| // Owner permissions | ||
| result[1] = permBit(mode&0400, 'r') | ||
| result[2] = permBit(mode&0200, 'w') | ||
| result[3] = permBit(mode&0100, 'x') | ||
|
|
||
| // Group permissions | ||
| result[4] = permBit(mode&040, 'r') | ||
| result[5] = permBit(mode&020, 'w') | ||
| result[6] = permBit(mode&010, 'x') | ||
|
|
||
| // Others permissions | ||
| result[7] = permBit(mode&04, 'r') | ||
| result[8] = permBit(mode&02, 'w') | ||
| result[9] = permBit(mode&01, 'x') | ||
|
|
||
| // Handle special permission bits | ||
| if mode&fs.ModeSetuid != 0 { | ||
| result[3] = 's' | ||
| } | ||
| if mode&fs.ModeSetgid != 0 { | ||
| result[6] = 's' | ||
| } | ||
| if mode&fs.ModeSticky != 0 { | ||
| result[9] = 't' | ||
| } | ||
|
|
||
| return string(result) | ||
| } | ||
|
|
||
| func (e Env) ModTime() string { | ||
| info, err := e.CurrentFile.Info() | ||
| if err != nil { | ||
| return "???" | ||
| } | ||
| modTime := info.ModTime() | ||
| now := time.Now() | ||
| if modTime.Year() == now.Year() { | ||
| return modTime.Format("Jan 2 15:04") | ||
| } | ||
| return modTime.Format("Jan 2 2006") | ||
| } | ||
|
|
||
| func (e Env) Owner() (string, error) { | ||
| fileInfo, err := e.CurrentFile.Info() | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
|
|
||
| stat, ok := fileInfo.Sys().(*syscall.Stat_t) | ||
| if !ok { | ||
| return "", errors.New("unsupported platform") | ||
| } | ||
|
|
||
| uidStr := strconv.FormatUint(uint64(stat.Uid), 10) | ||
| gidStr := strconv.FormatUint(uint64(stat.Gid), 10) | ||
|
|
||
| username := uidStr | ||
| if userInfo, err := user.LookupId(uidStr); err == nil { | ||
| username = userInfo.Username | ||
| } | ||
|
|
||
| groupname := gidStr | ||
| if groupInfo, err := user.LookupGroupId(gidStr); err == nil { | ||
| groupname = groupInfo.Name | ||
| } | ||
|
|
||
| return fmt.Sprintf("%s %s", username, groupname), nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "io/fs" | ||
| "testing" | ||
| ) | ||
|
|
||
| type mockFile struct { | ||
| fs.DirEntry | ||
| mode fs.FileMode | ||
| size int64 | ||
| } | ||
|
|
||
| type mockFileInfo struct { | ||
| fs.FileInfo | ||
| mode fs.FileMode | ||
| size int64 | ||
| } | ||
|
|
||
| func (m mockFile) Info() (fs.FileInfo, error) { | ||
| return mockFileInfo{ | ||
| size: m.size, | ||
| mode: m.mode, | ||
| }, nil | ||
| } | ||
|
|
||
| func (m mockFileInfo) Mode() fs.FileMode { return m.mode } | ||
|
|
||
| func (m mockFileInfo) Size() int64 { return m.size } | ||
|
|
||
| func TestFileSize(t *testing.T) { | ||
| testCases := []struct { | ||
| size int64 | ||
| expected string | ||
| }{ | ||
| {0, "0B"}, | ||
| {500, "500B"}, | ||
| {1024, "1.0KB"}, | ||
| {1500, "1.5KB"}, | ||
| {1024 * 1024, "1.0MB"}, | ||
| {1024 * 1024 * 1024, "1.0GB"}, | ||
| {1024 * 1024 * 1024 * 1024, "1.0TB"}, | ||
| } | ||
|
|
||
| env := Env{} | ||
| for _, tc := range testCases { | ||
| mockFile := mockFile{size: tc.size} | ||
| result := env.FileSize(mockFile) | ||
| if result != tc.expected { | ||
| t.Errorf("Failed: %v != %v", result, tc.expected) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func TestFileMode(t *testing.T) { | ||
| testCases := []struct { | ||
| mode fs.FileMode | ||
| expected string | ||
| }{ | ||
| {0755 | fs.ModeDir, "drwxr-xr-x"}, // Directory | ||
| {0644, "-rw-r--r--"}, // Regular file | ||
| {0777 | fs.ModeSetuid, "-rwsrwxrwx"}, // SetUID | ||
| {0777 | fs.ModeSetgid, "-rwxrwsrwx"}, // SetGID | ||
| {0777 | fs.ModeSticky, "-rwxrwxrwt"}, // Sticky bit | ||
| {fs.ModeSymlink | 0777, "lrwxrwxrwx"}, // Symbolic link | ||
| {fs.ModeSocket | 0777, "srwxrwxrwx"}, // Socket | ||
| {fs.ModeNamedPipe | 0777, "prwxrwxrwx"}, // Named pipe | ||
| {fs.ModeDevice | fs.ModeCharDevice | 0777, "crwxrwxrwx"}, // Character device | ||
| {fs.ModeDevice | 0777, "brwxrwxrwx"}, // Block device | ||
| } | ||
|
|
||
| env := Env{} | ||
| for _, tc := range testCases { | ||
| mockFile := mockFile{mode: tc.mode} | ||
| result := env.FileMode(mockFile) | ||
| if result != tc.expected { | ||
| t.Errorf("Failed: %v != %v", result, tc.expected) | ||
| } | ||
| } | ||
| } |
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