func (ds *Dataset) validateRefAsCommit(r types.Ref) types.Struct {
v := ds.store.ReadValue(r.TargetHash())
if v == nil {
panic(r.TargetHash().String() + " not found")
}
if !datas.IsCommitType(v.Type()) {
panic("Not a commit: " + types.EncodedValue(v))
}
return v.(types.Struct)
}
func TestAbsolutePaths(t *testing.T) {
assert := assert.New(t)
s0, s1 := types.String("foo"), types.String("bar")
list := types.NewList(s0, s1)
emptySet := types.NewSet()
db := datas.NewDatabase(chunks.NewMemoryStore())
db.WriteValue(s0)
db.WriteValue(s1)
db.WriteValue(list)
db.WriteValue(emptySet)
var err error
db, err = db.Commit("ds", datas.NewCommit(list, types.NewSet(), types.EmptyStruct))
assert.NoError(err)
head := db.Head("ds")
resolvesTo := func(exp types.Value, str string) {
p, err := NewAbsolutePath(str)
assert.NoError(err)
act := p.Resolve(db)
if exp == nil {
assert.Nil(act)
} else {
assert.True(exp.Equals(act), "%s Expected %s Actual %s", str, types.EncodedValue(exp), types.EncodedValue(act))
}
}
resolvesTo(head, "ds")
resolvesTo(emptySet, "ds.parents")
resolvesTo(list, "ds.value")
resolvesTo(s0, "ds.value[0]")
resolvesTo(s1, "ds.value[1]")
resolvesTo(head, "#"+head.Hash().String())
resolvesTo(list, "#"+list.Hash().String())
resolvesTo(s0, "#"+s0.Hash().String())
resolvesTo(s1, "#"+s1.Hash().String())
resolvesTo(s0, "#"+list.Hash().String()+"[0]")
resolvesTo(s1, "#"+list.Hash().String()+"[1]")
resolvesTo(nil, "foo")
resolvesTo(nil, "foo.parents")
resolvesTo(nil, "foo.value")
resolvesTo(nil, "foo.value[0]")
resolvesTo(nil, "#"+types.String("baz").Hash().String())
resolvesTo(nil, "#"+types.String("baz").Hash().String()+"[0]")
}
func main() {
// Actually the delimiter uses runes, which can be multiple characters long.
// https://blog.golang.org/strings
delimiter := flag.String("delimiter", ",", "field delimiter for csv file, must be exactly one character long.")
comment := flag.String("comment", "", "comment to add to commit's meta data")
header := flag.String("header", "", "header row. If empty, we'll use the first row of the file")
name := flag.String("name", "Row", "struct name. The user-visible name to give to the struct type that will hold each row of data.")
columnTypes := flag.String("column-types", "", "a comma-separated list of types representing the desired type of each column. if absent all types default to be String")
pathDescription := "noms path to blob to import"
path := flag.String("path", "", pathDescription)
flag.StringVar(path, "p", "", pathDescription)
dateFlag := flag.String("date", "", fmt.Sprintf(`date of commit in ISO 8601 format ("%s"). By default, the current date is used.`, dateFormat))
noProgress := flag.Bool("no-progress", false, "prevents progress from being output if true")
destType := flag.String("dest-type", "list", "the destination type to import to. can be 'list' or 'map:<pk>', where <pk> is the index position (0-based) of the column that is a the unique identifier for the column")
skipRecords := flag.Uint("skip-records", 0, "number of records to skip at beginning of file")
destTypePattern := regexp.MustCompile("^(list|map):(\\d+)$")
spec.RegisterDatabaseFlags(flag.CommandLine)
profile.RegisterProfileFlags(flag.CommandLine)
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "Usage: csv-import [options] <csvfile> <dataset>\n\n")
flag.PrintDefaults()
}
flag.Parse(true)
var err error
switch {
case flag.NArg() == 0:
err = errors.New("Maybe you put options after the dataset?")
case flag.NArg() == 1 && *path == "":
err = errors.New("If <csvfile> isn't specified, you must specify a noms path with -p")
case flag.NArg() == 2 && *path != "":
err = errors.New("Cannot specify both <csvfile> and a noms path with -p")
case flag.NArg() > 2:
err = errors.New("Too many arguments")
}
d.CheckError(err)
var date = *dateFlag
if date == "" {
date = time.Now().UTC().Format(dateFormat)
} else {
_, err := time.Parse(dateFormat, date)
d.CheckErrorNoUsage(err)
}
defer profile.MaybeStartProfile().Stop()
var r io.Reader
var size uint64
var filePath string
var dataSetArgN int
if *path != "" {
db, val, err := spec.GetPath(*path)
d.CheckError(err)
if val == nil {
d.CheckError(fmt.Errorf("Path %s not found\n", *path))
}
blob, ok := val.(types.Blob)
if !ok {
d.CheckError(fmt.Errorf("Path %s not a Blob: %s\n", *path, types.EncodedValue(val.Type())))
}
defer db.Close()
r = blob.Reader()
size = blob.Len()
dataSetArgN = 0
} else {
filePath = flag.Arg(0)
res, err := os.Open(filePath)
d.CheckError(err)
defer res.Close()
fi, err := res.Stat()
d.CheckError(err)
r = res
size = uint64(fi.Size())
dataSetArgN = 1
}
if !*noProgress {
r = progressreader.New(r, getStatusPrinter(size))
}
comma, err := csv.StringToRune(*delimiter)
d.CheckErrorNoUsage(err)
var dest int
var pk int
if *destType == "list" {
dest = destList
} else if match := destTypePattern.FindStringSubmatch(*destType); match != nil {
dest = destMap
pk, err = strconv.Atoi(match[2])
d.CheckErrorNoUsage(err)
} else {
fmt.Println("Invalid dest-type: ", *destType)
return
}
cr := csv.NewCSVReader(r, comma)
for i := uint(0); i < *skipRecords; i++ {
cr.Read()
}
var headers []string
if *header == "" {
headers, err = cr.Read()
d.PanicIfError(err)
} else {
headers = strings.Split(*header, string(comma))
}
ds, err := spec.GetDataset(flag.Arg(dataSetArgN))
d.CheckError(err)
defer ds.Database().Close()
kinds := []types.NomsKind{}
if *columnTypes != "" {
kinds = csv.StringsToKinds(strings.Split(*columnTypes, ","))
}
var value types.Value
if dest == destList {
value, _ = csv.ReadToList(cr, *name, headers, kinds, ds.Database())
} else {
value = csv.ReadToMap(cr, headers, pk, kinds, ds.Database())
}
mi := metaInfoForCommit(date, filePath, *path, *comment)
_, err = ds.Commit(value, dataset.CommitOptions{Meta: mi})
if !*noProgress {
status.Clear()
}
d.PanicIfError(err)
}