| /* |
| * Copyright 2015 Google Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| package main |
| |
| import ( |
| "bufio" |
| "fmt" |
| "log" |
| "os" |
| "os/exec" |
| "path/filepath" |
| ) |
| |
| type subsystem struct { |
| name string |
| maintainer []string |
| file []string |
| } |
| |
| var subsystems []subsystem |
| |
| func get_git_files() ([]string, error) { |
| var files []string |
| |
| /* Read in list of all files in the git repository */ |
| cmd := exec.Command("git", "ls-files") |
| out, err := cmd.StdoutPipe() |
| if err != nil { |
| log.Fatalf("git ls-files failed: %v", err) |
| return files, err |
| } |
| if err := cmd.Start(); err != nil { |
| log.Fatalf("Could not start %v: %v", cmd, err) |
| return files, err |
| } |
| |
| r := bufio.NewScanner(out) |
| for r.Scan() { |
| /* Cut out leading tab */ |
| files = append(files, r.Text()) |
| } |
| |
| cmd.Wait() |
| |
| return files, nil |
| } |
| |
| func get_maintainers() ([]string, error) { |
| var maintainers []string |
| |
| /* Read in all maintainers */ |
| file, err := os.Open("MAINTAINERS") |
| if err != nil { |
| log.Fatalf("Can't open MAINTAINERS file: %v", err) |
| log.Fatalf("Are you running from the top-level directory?") |
| return maintainers, err |
| } |
| defer file.Close() |
| |
| keep := false |
| s := bufio.NewScanner(file) |
| for s.Scan() { |
| /* Are we in the "data" section and have a non-empty line? */ |
| if keep && s.Text() != "" { |
| maintainers = append(maintainers, s.Text()) |
| } |
| /* Skip everything before the delimiter */ |
| if s.Text() == "\t\t-----------------------------------" { |
| keep = true |
| } |
| } |
| |
| return maintainers, nil |
| } |
| |
| func build_maintainers(maintainers []string) { |
| var current *subsystem |
| for _, line := range maintainers { |
| if line[1] != ':' { |
| /* Create new subsystem entry */ |
| var tmp subsystem |
| subsystems = append(subsystems, tmp) |
| current = &subsystems[len(subsystems)-1] |
| current.name = line |
| } else { |
| switch line[0] { |
| case 'R': |
| case 'M': |
| { |
| /* Add subsystem maintainer */ |
| current.maintainer = |
| append(current.maintainer, |
| line[3:len(line)]) |
| break |
| } |
| case 'S': |
| { |
| break |
| } |
| case 'L': |
| { |
| break |
| } |
| case 'T': |
| { |
| break |
| } |
| case 'F': |
| { |
| // add files |
| current.file = |
| append(current.file, |
| line[3:len(line)]) |
| break |
| } |
| default: |
| { |
| fmt.Println("No such specifier: ", line) |
| break |
| } |
| } |
| } |
| } |
| } |
| |
| func print_maintainers() { |
| for _, subsystem := range subsystems { |
| fmt.Println(subsystem.name) |
| fmt.Println(" ", subsystem.maintainer) |
| fmt.Println(" ", subsystem.file) |
| } |
| } |
| |
| func match_file(fname string, files []string) (bool, error) { |
| var matched bool |
| var err error |
| |
| for _, file := range files { |
| /* Direct match */ |
| matched, err = filepath.Match(file, fname) |
| if err != nil { |
| return false, err |
| } |
| if matched { |
| return true, nil |
| } |
| |
| /* There are three cases that match_file can handle: |
| * |
| * dirname/filename |
| * dirname/* |
| * dirname/ |
| * |
| * The first case is an exact match, the second case is a |
| * direct match of everything in that directory, and the third |
| * is a direct match of everything in that directory and its |
| * subdirectories. |
| * |
| * The first two cases are handled above, the code below is |
| * only for that latter case, so if file doesn't end in /, |
| * skip to the next file. |
| */ |
| if file[len(file)-1] != '/' { |
| continue |
| } |
| |
| /* Remove / because we add it again below */ |
| file = file[:len(file)-1] |
| |
| /* Maximum tree depth, as calculated by |
| * $(( `git ls-files | tr -d "[a-z][A-Z][0-9]\-\_\." | \ |
| * sort -u | tail -1 | wc -c` - 1 )) |
| * 11 |
| */ |
| max_depth := 11 |
| |
| for i := 0; i < max_depth; i++ { |
| /* Subdirectory match */ |
| file += "/*" |
| |
| if matched, err = filepath.Match(file, fname); err != nil { |
| return false, err |
| } |
| if matched { |
| return true, nil |
| } |
| |
| } |
| } |
| return false, nil |
| } |
| |
| func find_maintainer(fname string) { |
| for _, subsystem := range subsystems { |
| matched, err := match_file(fname, subsystem.file) |
| if err != nil { |
| log.Fatalf("match_file failed: %v", err) |
| return |
| } |
| if matched && subsystem.name != "THE REST" { |
| fmt.Println(fname, "is in subsystem", |
| subsystem.name) |
| fmt.Println("Maintainers: ", subsystem.maintainer) |
| return |
| } |
| } |
| fmt.Println(fname, "has no subsystem defined in MAINTAINERS") |
| } |
| |
| func find_unmaintained(fname string) { |
| for _, subsystem := range subsystems { |
| matched, err := match_file(fname, subsystem.file) |
| if err != nil { |
| log.Fatalf("match_file failed: %v", err) |
| return |
| } |
| if matched && subsystem.name != "THE REST" { |
| fmt.Println(fname, "is in subsystem", |
| subsystem.name) |
| return |
| } |
| } |
| fmt.Println(fname, "has no subsystem defined in MAINTAINERS") |
| } |
| |
| func main() { |
| var files []string |
| var maint bool |
| var debug bool |
| var err error |
| |
| args := os.Args[1:] |
| if len(args) == 0 { |
| /* get the filenames */ |
| files, err = get_git_files() |
| if err != nil { |
| log.Fatalf("Oops.") |
| return |
| } |
| maint = false |
| } else { |
| files = args |
| maint = true |
| } |
| |
| maintainers, err := get_maintainers() |
| if err != nil { |
| log.Fatalf("Oops.") |
| return |
| } |
| |
| /* build subsystem database */ |
| build_maintainers(maintainers) |
| |
| if debug { |
| print_maintainers() |
| } |
| |
| if maint { |
| /* Find maintainers for each file */ |
| for _, file := range files { |
| find_maintainer(file) |
| } |
| } else { |
| for _, file := range files { |
| find_unmaintained(file) |
| } |
| } |
| } |