Bugfixes

README.md

@@ -9,18 +9,21 @@ Usage:
   csv2db [OPTIONS]
 
 Application Options:
-  /f, /file:                    CSV file path
+      /filepath:                CSV file path
-  /s, /server:                  server address (default: 127.0.0.1)
+      /server:                  server address (default: 127.0.0.1)
-  /d, /database:                database name
+      /database:                database name
-  /t, /table:                   table name
+      /table:                   table name in schema.name format
-  /l, /fields:                  field types
+      /fields:                  field types in [sifdt ] format
-  /c, /comma:[,|;|t]            CSV file comma character (default: ,)
+      /comma:[,|;|t]            CSV file comma character (default: ,)
-  /x, /create                   create table
+      /create                   create table
-  /o, /overwrite                overwrite existing table
+      /overwrite                overwrite existing table
-  /e, /encoding:[utf8|win1251]  CSV file charset (default: utf8)
+      /encoding:[utf8|win1251]  CSV file charset (default: utf8)
-  /r, /skiprows:                number of rows to skip
+      /skiprows:                number of rows to skip
+      /dateformat:              date format (Go style) (default: 02.01.2006)
+      /timestampformat:         timestamp format  (Go style) (default: 02.01.2006 15:04:05)
+      /unknowncolumnnames       insert to table with unknown column names
 ```
 
 ## Build
 
-Use `make.bat` file to build `csv2db.exe` executable.
+Use `make.bat` file to build `csv2db.exe` executable.

encodings.go

@@ -41,8 +41,10 @@ func (e *Encoding) UnmarshalText(text []byte) error {
 	switch string(text) {
 	case "utf8":
 		*e = Utf8
+		return nil
 	case "win1251":
 		*e = Win1251
+		return nil
 	}
 
 	return fmt.Errorf("unknown encoding: %s", string(text))

main.go

@@ -18,16 +18,19 @@ import (
 
 var db *sql.DB
 var opts struct {
-	FilePath       string `short:"f" long:"file" description:"CSV file path" required:"true"`
+	FilePath           string `long:"filepath" description:"CSV file path" required:"true"`
-	ServerAddress  string `short:"s" long:"server" description:"server address" default:"127.0.0.1"`
+	ServerAddress      string `long:"server" description:"server address" default:"127.0.0.1"`
-	DatabaseName   string `short:"d" long:"database" description:"database name" required:"true"`
+	DatabaseName       string `long:"database" description:"database name" required:"true"`
-	TableName      string `short:"t" long:"table" description:"table name" required:"true"`
+	TableName          string `long:"table" description:"table name in schema.name format" required:"true"`
-	FieldTypes     string `short:"l" long:"fields" description:"field types" required:"true"`
+	FieldTypes         string `long:"fields" description:"field types in [sifdt ] format" required:"true"`
-	Comma          string `short:"c" long:"comma" description:"CSV file comma character" choice:"," choice:";" choice:"t" default:","`
+	Comma              string `long:"comma" description:"CSV file comma character" choice:"," choice:";" choice:"t" default:","`
-	CreateTable    bool   `short:"x" long:"create" description:"create table"`
+	CreateTable        bool   `long:"create" description:"create table"`
-	OverwriteTable bool   `short:"o" long:"overwrite" description:"overwrite existing table"`
+	OverwriteTable     bool   `long:"overwrite" description:"overwrite existing table"`
-	Encoding       string `short:"e" long:"encoding" description:"CSV file charset" choice:"utf8" choice:"win1251" default:"utf8"`
+	Encoding           string `long:"encoding" description:"CSV file charset" choice:"utf8" choice:"win1251" default:"utf8"`
-	SkipRows       int    `short:"r" long:"skiprows" description:"number of rows to skip"`
+	SkipRows           int    `long:"skiprows" description:"number of rows to skip"`
+	DateFormat         string `long:"dateformat" description:"date format (Go style)" default:"02.01.2006"`
+	TimestampFormat    string `long:"timestampformat" description:"timestamp format  (Go style)" default:"02.01.2006 15:04:05"`
+	UnknownColumnNames bool   `long:"unknowncolumnnames" description:"insert to table with unknown column names"`
 }
 
 func init() {
@@ -71,8 +74,15 @@ func processReader(r io.Reader) error {
 
 	bufReader := bufio.NewReaderSize(decoder, 4*1024*1024)
 
+	for i := 0; i < opts.SkipRows; i++ {
+		_, _, err := bufReader.ReadLine()
+		if err != nil {
+			return fmt.Errorf("skip rows: %v", err)
+		}
+	}
+
 	reader := csv.NewReader(bufReader)
-	reader.TrimLeadingSpace = true
+	reader.TrimLeadingSpace = false
 	reader.FieldsPerRecord = len(opts.FieldTypes)
 
 	if []rune(opts.Comma)[0] == 't' {
@@ -81,16 +91,6 @@ func processReader(r io.Reader) error {
 		reader.Comma = []rune(opts.Comma)[0]
 	}
 
-	for i := 0; i < opts.SkipRows; i++ {
-		_, err := reader.Read()
-		if err == csv.ErrFieldCount {
-			continue
-		}
-		if err != nil {
-			return fmt.Errorf("skip rows: %v", err)
-		}
-	}
-
 	header, err := reader.Read()
 	if err != nil {
 		return fmt.Errorf("read header: %v", err)
@@ -112,12 +112,38 @@ func processReader(r io.Reader) error {
 	}
 
 	var neededHeader []string
-	for i, v := range header {
-		if opts.FieldTypes[i] == ' ' {
-			continue
-		}
 
-		neededHeader = append(neededHeader, v)
+	if opts.UnknownColumnNames {
+		sql := fmt.Sprintf("SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA + '.' + TABLE_NAME = '%s' ORDER BY ORDINAL_POSITION", opts.TableName)
+		rows, err := db.Query(sql)
+		if err != nil {
+			return fmt.Errorf("get column names from database: %v", err)
+		}
+		defer rows.Close()
+
+		for rows.Next() {
+			if rows.Err() != nil {
+				return fmt.Errorf("get column names from database: %v", err)
+			}
+			var columnName string
+			err = rows.Scan(&columnName)
+			if err != nil {
+				return fmt.Errorf("get column names from database: %v", err)
+			}
+			neededHeader = append(neededHeader, columnName)
+		}
+	} else {
+		for i, v := range header {
+			if opts.FieldTypes[i] == ' ' {
+				continue
+			}
+
+			neededHeader = append(neededHeader, v)
+		}
+	}
+
+	if len(neededHeader) == 0 {
+		return fmt.Errorf("no columns to process (check table name or field types)")
 	}
 
 	tx, err := db.Begin()
@@ -126,7 +152,7 @@ func processReader(r io.Reader) error {
 	}
 
 	if opts.CreateTable {
-		err = createTable(tx, header)
+		err = createTable(tx, header, opts.FieldTypes)
 		if err != nil {
 			_ = tx.Rollback()
 			return fmt.Errorf("create table: %v", err)

sql.go

@@ -5,7 +5,7 @@ import (
 	"fmt"
 )
 
-func createTable(tx *sql.Tx, header []string) error {
+func createTable(tx *sql.Tx, header []string, fieldTypes string) error {
 	if opts.OverwriteTable {
 		_, err := tx.Exec(fmt.Sprintf("IF object_id('%s', 'U') IS NOT NULL DROP TABLE %s", opts.TableName, opts.TableName))
 		if err != nil {
@@ -17,11 +17,15 @@ func createTable(tx *sql.Tx, header []string) error {
 
 	for i, v := range header {
 		var fieldType FieldType
-		err := fieldType.UnmarshalText([]byte(v))
+		err := fieldType.UnmarshalText([]byte(fieldTypes[i : i+1]))
 		if err != nil {
 			return fmt.Errorf("detect field type: %v", err)
 		}
 
+		if fieldType == Skip {
+			continue
+		}
+
 		sql += fmt.Sprintf(`"%s" %s`, v, fieldType.SqlFieldType())
 
 		if i+1 < len(header) {

types.go

@@ -17,10 +17,11 @@ const (
 	Money
 	Date
 	Timestamp
-	TimestampWithoutSeconds
 )
 
 func (ft FieldType) ParseValue(s string) (any, error) {
+	s = strings.TrimSpace(s)
+
 	switch ft {
 	case String:
 		return s, nil
@@ -29,11 +30,9 @@ func (ft FieldType) ParseValue(s string) (any, error) {
 	case Float:
 		return strconv.ParseFloat(strings.ReplaceAll(s, ",", "."), 64)
 	case Date:
-		return time.Parse("02.01.2006", s)
+		return time.Parse(opts.DateFormat, s)
 	case Timestamp:
-		return time.Parse("02.01.2006 15:04:05", s)
+		return time.Parse(opts.TimestampFormat, s)
-	case TimestampWithoutSeconds:
-		return time.Parse("02.01.2006 15:04", s)
 	}
 
 	return nil, fmt.Errorf("unknown type id = %d", ft)
@@ -51,7 +50,7 @@ func (ft FieldType) SqlFieldType() string {
 		panic("do not implemented - see https://github.com/denisenkom/go-mssqldb/issues/460") // TODO: https://github.com/denisenkom/go-mssqldb/issues/460
 	case Date:
 		return "date"
-	case Timestamp, TimestampWithoutSeconds:
+	case Timestamp:
 		return "datetime2"
 	}
 
@@ -74,8 +73,6 @@ func (ft FieldType) MarshalText() (text []byte, err error) {
 		return []byte("d"), nil
 	case Timestamp:
 		return []byte("t"), nil
-	case TimestampWithoutSeconds:
-		return []byte("w"), nil
 	}
 
 	return nil, fmt.Errorf("unknown type id = %d", ft)
@@ -85,21 +82,26 @@ func (ft *FieldType) UnmarshalText(text []byte) error {
 	switch string(text) {
 	case " ":
 		*ft = Skip
+		return nil
 	case "i":
 		*ft = Integer
+		return nil
 	case "s":
 		*ft = String
+		return nil
 	case "f":
 		*ft = Float
+		return nil
 	case "m":
 		*ft = Money
+		return nil
 	case "d":
 		*ft = Date
+		return nil
 	case "t":
 		*ft = Timestamp
-	case "w":
+		return nil
-		*ft = TimestampWithoutSeconds
 	}
 
-	return fmt.Errorf("unknown format code %s", string(text))
+	return fmt.Errorf(`unknown format code "%s"`, string(text))
 }

zip.go

@@ -8,7 +8,7 @@ import (
 func processZipFile(filePath string) error {
 	r, err := zip.OpenReader(filePath)
 	if err != nil {
-		return err
+		return fmt.Errorf("open ZIP file: %v", err)
 	}
 
 	if len(r.File) != 1 {
@@ -17,7 +17,7 @@ func processZipFile(filePath string) error {
 
 	zipFileReader, err := r.File[0].Open()
 	if err != nil {
-		return err
+		return fmt.Errorf("open file from ZIP archive: %v", err)
 	}
 	defer zipFileReader.Close()