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| 1 | +package basic_functions |
| 2 | + |
| 3 | +import ( |
| 4 | + "io/fs" |
| 5 | + "log" |
| 6 | + "os" |
| 7 | + "path/filepath" |
| 8 | + "strings" |
| 9 | +) |
| 10 | + |
| 11 | +// version 1.0.1 |
| 12 | + |
| 13 | +func Read_file(file string) ([]byte, error) { |
| 14 | + if _, err := os.Stat(file); err == nil { |
| 15 | + if err != nil { |
| 16 | + return []byte(""), err |
| 17 | + } |
| 18 | + } |
| 19 | + return os.ReadFile(file) |
| 20 | +} |
| 21 | + |
| 22 | +func Write_file(file string, data string) error { |
| 23 | + // save the file to disk |
| 24 | + f, err := os.OpenFile(file, os.O_APPEND|os.O_CREATE, 0666) |
| 25 | + if err != nil { |
| 26 | + return err |
| 27 | + } |
| 28 | + defer f.Close() |
| 29 | + |
| 30 | + _, err2 := f.WriteString(data) |
| 31 | + if err2 != nil { |
| 32 | + return err |
| 33 | + } |
| 34 | + return nil |
| 35 | +} |
| 36 | + |
| 37 | +func Delete_file(file string) error { |
| 38 | + err := os.Remove(file) |
| 39 | + if err != nil { |
| 40 | + return err |
| 41 | + } |
| 42 | + return nil |
| 43 | +} |
| 44 | + |
| 45 | +func File_or_directory_exists(path string) bool { |
| 46 | + _, err := os.Stat(path) |
| 47 | + if err != nil { |
| 48 | + if os.IsNotExist(err) { |
| 49 | + // File or directory does not exist |
| 50 | + return false |
| 51 | + } else { |
| 52 | + // Some other error. The file may or may not exist |
| 53 | + return false |
| 54 | + } |
| 55 | + } |
| 56 | + return true |
| 57 | +} |
| 58 | + |
| 59 | +func List_files_in_dir(dir string) ([]fs.DirEntry, error) { |
| 60 | + return os.ReadDir(dir) |
| 61 | +} |
| 62 | + |
| 63 | +func List_files_by_extension(dir string, extension string) []string { |
| 64 | + var extfiles []string |
| 65 | + |
| 66 | + var dirfiles, err = List_files_in_dir(dir) |
| 67 | + if err != nil { |
| 68 | + log.Fatalln("List_files_by_extension - Error: " + err.Error()) |
| 69 | + } |
| 70 | + |
| 71 | + for _, file := range dirfiles { |
| 72 | + if strings.HasSuffix(file.Name(), extension) { |
| 73 | + extfiles = append(extfiles, file.Name()) |
| 74 | + } |
| 75 | + } |
| 76 | + return extfiles |
| 77 | +} |
| 78 | + |
| 79 | +func Current_directory() string { |
| 80 | + ex, err := os.Executable() |
| 81 | + if err != nil { |
| 82 | + panic(err) |
| 83 | + } |
| 84 | + |
| 85 | + // the executable directory |
| 86 | + directory := filepath.Dir(ex) |
| 87 | + return directory |
| 88 | +} |
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