// Works like `git cat-file --batch='--'`
func ExampleReadBlobs() {
var oids []gitdb.Oid
for {
var s string
if n, _ := fmt.Scan(&s); n != 1 {
break
}
oids = append(oids, gitdb.Oid(s))
}
blobs, err := gitdb.ReadBlobs(db, oids)
if err != nil {
panic(err)
}
for _, b := range blobs {
fmt.Printf("--\n%s\n", string(b))
}
// Sample Output:
// --
// foo
// --
// bar
}
// An example CLI tool to test Import, Export and GC.
func Example_exampleCliTool() {
// To test the it, build, rename to `gitdbc` and try:
// mkdir -p /tmp/repo/
// pushd /tmp/repo && git clone https://gitlab.com/quark/gitdb && popd
// gitdbc import /tmp/repo/gitdb
//
// mkdir -p /tmp/repo/gitdb2
// pushd /tmp/repo/gitdb2 && git init && popd
// OID=`git --git-dir /tmp/repo/gitdb rev-parse HEAD`
// gitdbc export /tmp/repo/gitdb2 $OID
//
// gitdbc gc $OID
usage := func() {
fmt.Printf("%s i[mport] dir [ref=master] # import objects from filesystem\n"+
"%s e[xport] dir oid # export objects to existing git repo. update master.\n"+
"%s g[c] oid1 [oid [oid] ...] # give some reachable oids, delete others\n",
os.Args[0], os.Args[0], os.Args[0])
os.Exit(1)
}
if len(os.Args) < 3 {
usage()
}
var err error
db, err = sql.Open("sqlite3", "/tmp/gitdb.sqlite3")
if err != nil {
panic(err)
}
_, err = gitdb.CreateTable(db)
if err != nil {
panic(err)
}
defer db.Close()
switch os.Args[1][0] {
case 'i': // Import
ref := "master"
if len(os.Args) >= 4 {
ref = os.Args[3]
}
dir := os.Args[2]
oids, rOid, err := gitdb.Import(db, dir, ref)
if err != nil {
panic(err)
}
fmt.Printf("Imported from %s: %d objects; %s is '%s'.\n", dir, len(oids), ref, rOid)
case 'e': // Export
if len(os.Args) < 4 {
usage()
}
dir := os.Args[2]
oid := gitdb.Oid(os.Args[3])
oids, err := gitdb.Export(db, dir, oid, "refs/heads/master")
if err != nil {
panic(err)
}
fmt.Printf("Exported to %s: %d objects; master set to '%s'.\n", dir, len(oids), oid)
case 'g': // GC
var oids []gitdb.Oid
for _, o := range os.Args[2:len(os.Args)] {
oids = append(oids, gitdb.Oid(o))
}
tx, err := db.Begin()
if err != nil {
panic(err)
}
delOids, err := gitdb.GC(tx, oids)
if err != nil {
panic(err)
}
if err := tx.Commit(); err != nil {
panic(err)
}
fmt.Printf("GC completed. %d objects deleted.\n", len(delOids))
default:
usage()
}
db.Close()
}