Colin Cross | 436b765 | 2018-03-15 16:24:10 -0700 | [diff] [blame] | 1 | // Copyright 2018 Google Inc. All rights reserved. |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | package main |
| 16 | |
| 17 | import ( |
| 18 | "archive/zip" |
| 19 | "flag" |
| 20 | "fmt" |
| 21 | "io" |
| 22 | "io/ioutil" |
| 23 | "log" |
| 24 | "os" |
| 25 | "path/filepath" |
| 26 | "strings" |
| 27 | ) |
| 28 | |
| 29 | var ( |
| 30 | outputDir = flag.String("d", "", "output dir") |
| 31 | outputFile = flag.String("l", "", "output list file") |
Dan Willemsen | 304cfec | 2019-05-28 14:49:06 -0700 | [diff] [blame] | 32 | zipPrefix = flag.String("zip-prefix", "", "optional prefix within the zip file to extract, stripping the prefix") |
Zi Wang | 6a66e3d | 2023-06-13 10:40:52 -0700 | [diff] [blame] | 33 | filter multiFlag |
Colin Cross | 436b765 | 2018-03-15 16:24:10 -0700 | [diff] [blame] | 34 | ) |
| 35 | |
Zi Wang | 6a66e3d | 2023-06-13 10:40:52 -0700 | [diff] [blame] | 36 | func init() { |
| 37 | flag.Var(&filter, "f", "optional filter pattern") |
| 38 | } |
| 39 | |
Colin Cross | 436b765 | 2018-03-15 16:24:10 -0700 | [diff] [blame] | 40 | func must(err error) { |
| 41 | if err != nil { |
| 42 | log.Fatal(err) |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | func writeFile(filename string, in io.Reader, perm os.FileMode) error { |
| 47 | out, err := os.OpenFile(filename, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, perm) |
| 48 | if err != nil { |
| 49 | return err |
| 50 | } |
| 51 | _, err = io.Copy(out, in) |
| 52 | if err != nil { |
| 53 | out.Close() |
| 54 | return err |
| 55 | } |
| 56 | |
| 57 | return out.Close() |
| 58 | } |
| 59 | |
Jiyong Park | dc48afd | 2020-11-18 15:52:07 +0900 | [diff] [blame] | 60 | func writeSymlink(filename string, in io.Reader) error { |
| 61 | b, err := ioutil.ReadAll(in) |
| 62 | if err != nil { |
| 63 | return err |
| 64 | } |
| 65 | dest := string(b) |
| 66 | err = os.Symlink(dest, filename) |
| 67 | return err |
| 68 | } |
| 69 | |
Colin Cross | 436b765 | 2018-03-15 16:24:10 -0700 | [diff] [blame] | 70 | func main() { |
| 71 | flag.Usage = func() { |
| 72 | fmt.Fprintln(os.Stderr, "usage: zipsync -d <output dir> [-l <output file>] [-f <pattern>] [zip]...") |
| 73 | flag.PrintDefaults() |
| 74 | } |
| 75 | |
| 76 | flag.Parse() |
| 77 | |
| 78 | if *outputDir == "" { |
| 79 | flag.Usage() |
| 80 | os.Exit(1) |
| 81 | } |
| 82 | |
| 83 | inputs := flag.Args() |
| 84 | |
| 85 | // For now, just wipe the output directory and replace its contents with the zip files |
| 86 | // Eventually this could only modify the directory contents as necessary to bring it up |
| 87 | // to date with the zip files. |
| 88 | must(os.RemoveAll(*outputDir)) |
| 89 | |
| 90 | must(os.MkdirAll(*outputDir, 0777)) |
| 91 | |
| 92 | var files []string |
| 93 | seen := make(map[string]string) |
| 94 | |
Dan Willemsen | 304cfec | 2019-05-28 14:49:06 -0700 | [diff] [blame] | 95 | if *zipPrefix != "" { |
| 96 | *zipPrefix = filepath.Clean(*zipPrefix) + "/" |
| 97 | } |
| 98 | |
Colin Cross | 436b765 | 2018-03-15 16:24:10 -0700 | [diff] [blame] | 99 | for _, input := range inputs { |
| 100 | reader, err := zip.OpenReader(input) |
| 101 | if err != nil { |
| 102 | log.Fatal(err) |
| 103 | } |
| 104 | defer reader.Close() |
| 105 | |
| 106 | for _, f := range reader.File { |
Dan Willemsen | 304cfec | 2019-05-28 14:49:06 -0700 | [diff] [blame] | 107 | name := f.Name |
| 108 | if *zipPrefix != "" { |
| 109 | if !strings.HasPrefix(name, *zipPrefix) { |
| 110 | continue |
| 111 | } |
| 112 | name = strings.TrimPrefix(name, *zipPrefix) |
| 113 | } |
Zi Wang | 6a66e3d | 2023-06-13 10:40:52 -0700 | [diff] [blame] | 114 | |
| 115 | if filter != nil { |
| 116 | if match, err := filter.Match(filepath.Base(name)); err != nil { |
Colin Cross | 436b765 | 2018-03-15 16:24:10 -0700 | [diff] [blame] | 117 | log.Fatal(err) |
| 118 | } else if !match { |
| 119 | continue |
| 120 | } |
| 121 | } |
Zi Wang | 6a66e3d | 2023-06-13 10:40:52 -0700 | [diff] [blame] | 122 | |
Dan Willemsen | 304cfec | 2019-05-28 14:49:06 -0700 | [diff] [blame] | 123 | if filepath.IsAbs(name) { |
| 124 | log.Fatalf("%q in %q is an absolute path", name, input) |
Colin Cross | 436b765 | 2018-03-15 16:24:10 -0700 | [diff] [blame] | 125 | } |
| 126 | |
Dan Willemsen | 304cfec | 2019-05-28 14:49:06 -0700 | [diff] [blame] | 127 | if prev, exists := seen[name]; exists { |
| 128 | log.Fatalf("%q found in both %q and %q", name, prev, input) |
Colin Cross | 436b765 | 2018-03-15 16:24:10 -0700 | [diff] [blame] | 129 | } |
Dan Willemsen | 304cfec | 2019-05-28 14:49:06 -0700 | [diff] [blame] | 130 | seen[name] = input |
Colin Cross | 436b765 | 2018-03-15 16:24:10 -0700 | [diff] [blame] | 131 | |
Dan Willemsen | 304cfec | 2019-05-28 14:49:06 -0700 | [diff] [blame] | 132 | filename := filepath.Join(*outputDir, name) |
Colin Cross | 436b765 | 2018-03-15 16:24:10 -0700 | [diff] [blame] | 133 | if f.FileInfo().IsDir() { |
Jaewoong Jung | a86983d | 2020-04-03 18:35:38 -0700 | [diff] [blame] | 134 | must(os.MkdirAll(filename, 0777)) |
Colin Cross | 436b765 | 2018-03-15 16:24:10 -0700 | [diff] [blame] | 135 | } else { |
| 136 | must(os.MkdirAll(filepath.Dir(filename), 0777)) |
| 137 | in, err := f.Open() |
| 138 | if err != nil { |
| 139 | log.Fatal(err) |
| 140 | } |
Jiyong Park | dc48afd | 2020-11-18 15:52:07 +0900 | [diff] [blame] | 141 | if f.FileInfo().Mode()&os.ModeSymlink != 0 { |
| 142 | must(writeSymlink(filename, in)) |
| 143 | } else { |
| 144 | must(writeFile(filename, in, f.FileInfo().Mode())) |
| 145 | } |
Colin Cross | 436b765 | 2018-03-15 16:24:10 -0700 | [diff] [blame] | 146 | in.Close() |
| 147 | files = append(files, filename) |
| 148 | } |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | if *outputFile != "" { |
Colin Cross | 628d55d | 2018-03-22 12:38:05 -0700 | [diff] [blame] | 153 | data := strings.Join(files, "\n") |
| 154 | if len(files) > 0 { |
| 155 | data += "\n" |
| 156 | } |
Colin Cross | 436b765 | 2018-03-15 16:24:10 -0700 | [diff] [blame] | 157 | must(ioutil.WriteFile(*outputFile, []byte(data), 0666)) |
| 158 | } |
| 159 | } |
Zi Wang | 6a66e3d | 2023-06-13 10:40:52 -0700 | [diff] [blame] | 160 | |
| 161 | type multiFlag []string |
| 162 | |
| 163 | func (m *multiFlag) String() string { |
| 164 | return strings.Join(*m, " ") |
| 165 | } |
| 166 | |
| 167 | func (m *multiFlag) Set(s string) error { |
| 168 | *m = append(*m, s) |
| 169 | return nil |
| 170 | } |
| 171 | |
| 172 | func (m *multiFlag) Match(s string) (bool, error) { |
| 173 | if m == nil { |
| 174 | return false, nil |
| 175 | } |
| 176 | for _, f := range *m { |
| 177 | if match, err := filepath.Match(f, s); err != nil { |
| 178 | return false, err |
| 179 | } else if match { |
| 180 | return true, nil |
| 181 | } |
| 182 | } |
| 183 | return false, nil |
| 184 | } |