165 lines
3.4 KiB
Go
165 lines
3.4 KiB
Go
package commands
|
|
|
|
import (
|
|
"bufio"
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
|
|
"github.com/github/git-lfs/lfs"
|
|
"github.com/github/git-lfs/vendor/_nuts/github.com/spf13/cobra"
|
|
)
|
|
|
|
var (
|
|
trackCmd = &cobra.Command{
|
|
Use: "track",
|
|
Short: "Manipulate .gitattributes",
|
|
Run: trackCommand,
|
|
}
|
|
)
|
|
|
|
func trackCommand(cmd *cobra.Command, args []string) {
|
|
if lfs.LocalGitDir == "" {
|
|
Print("Not a git repository.")
|
|
os.Exit(128)
|
|
}
|
|
|
|
lfs.InstallHooks(false)
|
|
knownPaths := findPaths()
|
|
|
|
if len(args) == 0 {
|
|
Print("Listing tracked paths")
|
|
for _, t := range knownPaths {
|
|
Print(" %s (%s)", t.Path, t.Source)
|
|
}
|
|
return
|
|
}
|
|
|
|
addTrailingLinebreak := needsTrailingLinebreak(".gitattributes")
|
|
attributesFile, err := os.OpenFile(".gitattributes", os.O_RDWR|os.O_APPEND|os.O_CREATE, 0660)
|
|
if err != nil {
|
|
Print("Error opening .gitattributes file")
|
|
return
|
|
}
|
|
defer attributesFile.Close()
|
|
|
|
if addTrailingLinebreak {
|
|
if _, err := attributesFile.WriteString("\n"); err != nil {
|
|
Print("Error writing to .gitattributes")
|
|
}
|
|
}
|
|
|
|
wd, _ := os.Getwd()
|
|
|
|
ArgsLoop:
|
|
for _, t := range args {
|
|
absT, relT := absRelPath(t, wd)
|
|
for _, k := range knownPaths {
|
|
absK, _ := absRelPath(k.Path, filepath.Join(wd, filepath.Dir(k.Source)))
|
|
if absT == absK {
|
|
Print("%s already supported", t)
|
|
continue ArgsLoop
|
|
}
|
|
}
|
|
|
|
encodedArg := strings.Replace(relT, " ", "[[:space:]]", -1)
|
|
_, err := attributesFile.WriteString(fmt.Sprintf("%s filter=lfs diff=lfs merge=lfs -crlf\n", encodedArg))
|
|
if err != nil {
|
|
Print("Error adding path %s", t)
|
|
continue
|
|
}
|
|
Print("Tracking %s", t)
|
|
}
|
|
}
|
|
|
|
type mediaPath struct {
|
|
Path string
|
|
Source string
|
|
}
|
|
|
|
func findPaths() []mediaPath {
|
|
paths := make([]mediaPath, 0)
|
|
wd, _ := os.Getwd()
|
|
|
|
for _, path := range findAttributeFiles() {
|
|
attributes, err := os.Open(path)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
|
|
scanner := bufio.NewScanner(attributes)
|
|
for scanner.Scan() {
|
|
line := scanner.Text()
|
|
if strings.Contains(line, "filter=lfs") {
|
|
fields := strings.Fields(line)
|
|
relPath, _ := filepath.Rel(wd, path)
|
|
paths = append(paths, mediaPath{Path: fields[0], Source: relPath})
|
|
}
|
|
}
|
|
}
|
|
|
|
return paths
|
|
}
|
|
|
|
func findAttributeFiles() []string {
|
|
paths := make([]string, 0)
|
|
|
|
repoAttributes := filepath.Join(lfs.LocalGitDir, "info", "attributes")
|
|
if info, err := os.Stat(repoAttributes); err == nil && !info.IsDir() {
|
|
paths = append(paths, repoAttributes)
|
|
}
|
|
|
|
filepath.Walk(lfs.LocalWorkingDir, func(path string, info os.FileInfo, err error) error {
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if !info.IsDir() && (filepath.Base(path) == ".gitattributes") {
|
|
paths = append(paths, path)
|
|
}
|
|
return nil
|
|
})
|
|
|
|
return paths
|
|
}
|
|
|
|
func needsTrailingLinebreak(filename string) bool {
|
|
file, err := os.Open(filename)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
defer file.Close()
|
|
|
|
buf := make([]byte, 16384)
|
|
bytesRead := 0
|
|
for {
|
|
n, err := file.Read(buf)
|
|
if err == io.EOF {
|
|
break
|
|
} else if err != nil {
|
|
return false
|
|
}
|
|
bytesRead = n
|
|
}
|
|
|
|
return !strings.HasSuffix(string(buf[0:bytesRead]), "\n")
|
|
}
|
|
|
|
// absRelPath takes a path and a working directory and
|
|
// returns an absolute and a relative representation of path based on the working directory
|
|
func absRelPath(path, wd string) (string, string) {
|
|
if filepath.IsAbs(path) {
|
|
relPath, _ := filepath.Rel(wd, path)
|
|
return path, relPath
|
|
}
|
|
|
|
absPath := filepath.Join(wd, path)
|
|
return absPath, path
|
|
}
|
|
|
|
func init() {
|
|
RootCmd.AddCommand(trackCmd)
|
|
}
|