csv file UTF-8 (with BOM) to ANSI / Windows-1251

问题

I'm looking to create a batch file / macro to remove the first line of an auto generated UTF-8 CSV and convert it to Windows code page 1251 ("ANSI"). I've been looking all over the internet and tried a lot of things, but just can't find one that works...

Removing the first line is simple enough

@echo off
set "csv=test.csv"
more +1 "%csv%" >"%csv%.new"
move /y "%csv%.new" "export\%csv%" >nul

after that I'm lost, Ive tried using the TYPE set from DOS

cmd /a /c TYPE test.csv > ansi.csv

and many variations on this, but it either returns an empty CP1251 file or just another UTF file.

I've tried using vbs but this returned another UTF-8 file but now without BOM

Option Explicit

Private Const adReadAll = -1
Private Const adSaveCreateOverWrite = 2
Private Const adTypeBinary = 1
Private Const adTypeText = 2
Private Const adWriteChar = 0

Private Sub UTF8toANSI(ByVal UTF8FName, ByVal ANSIFName)
    Dim strText

    With CreateObject("ADODB.Stream")
        .Open
        .Type = adTypeBinary
        .LoadFromFile UTF8FName
        .Type = adTypeText
        .Charset = "utf-8"
        strText = .ReadText(adReadAll)
        .Position = 0
        .SetEOS
        .Charset = "_autodetect" 'Use current ANSI codepage.
        .WriteText strText, adWriteChar
        .SaveToFile ANSIFName, adSaveCreateOverWrite
        .Close
    End With
End Sub

UTF8toANSI "UTF8-wBOM.txt", "ANSI1.txt"
UTF8toANSI "UTF8-noBOM.txt", "ANSI2.txt"
MsgBox "Complete!", vbOKOnly, WScript.ScriptName

EDIT1: tried converting to iso-8859-1 instead of cp1251 using vbs

Option Explicit

Private Const adReadAll = -1
Private Const adSaveCreateOverWrite = 2
Private Const adTypeBinary = 1
Private Const adTypeText = 2
Private Const adWriteChar = 0

Private Sub UTF8toANSI(ByVal UTF8FName, ByVal ANSIFName)
  Dim strText

  With CreateObject("ADODB.Stream")
    .Open
    .Type = adTypeBinary
    .LoadFromFile UTF8FName
    .Type = adTypeText
    .Charset = "utf-8"
    strText = .ReadText(adReadAll)
    .Position = 0
    .SetEOS
    .Charset = "iso-8859-1"
    .WriteText strText, adWriteChar
    .SaveToFile ANSIFName, adSaveCreateOverWrite
    .Close
  End With
End Sub

UTF8toANSI WScript.Arguments(0), WScript.Arguments(1)

This however also did not work.

EDIT 2: I found a way to convert the files from UTF to ANSI using stringconverter.exe (downloaded from http://www.computerperformance.co.uk/ezine/tools.htm )

Setlocal
Set _source=C:\Users\lloyd.EVD\delFirstBat\import
Set _dest=C:\Users\lloyd.EVD\delFirstBat\export
For /F "Tokens=*" %%I In ('dir /b /a-d "%_source%\*.CSV"') Do stringconverter "%_source%\%%~nxI" "%_dest%\%%~nxI" /ANSI

How ever now when I remove the first line of the file (either before or after, doesn't matter) it becomes a UTF-8 without BOM again.

So all I should need now is a script to del first row without changing the charset.

回答1:

Next VBScript could help: procedure UTF8toANSI converts a UTF-8 encoded text file to another encoding.

Option Explicit

Private Const adReadAll = -1
Private Const adSaveCreateOverWrite = 2
Private Const adTypeBinary = 1
Private Const adTypeText = 2
Private Const adWriteChar = 0

Private Sub UTF8toANSI(ByVal UTF8FName, ByVal ANSIFName, ByVal ANSICharSet)
  Dim strText

  With CreateObject("ADODB.Stream")
    .Type = adTypeText

    .Charset = "utf-8"
    .Open
    .LoadFromFile UTF8FName
    strText = .ReadText(adReadAll)
    .Close

    .Charset = ANSICharSet
    .Open
    .WriteText strText, adWriteChar
    .SaveToFile ANSIFName, adSaveCreateOverWrite
    .Close
  End With
End Sub

'UTF8toANSI WScript.Arguments(0), WScript.Arguments(1)
UTF8toANSI "D:\test\SO\38835837utf8.csv", "D:\test\SO\38835837ansi1250.csv", "windows-1250"
UTF8toANSI "D:\test\SO\38835837utf8.csv", "D:\test\SO\38835837ansi1251.csv", "windows-1251"
UTF8toANSI "D:\test\SO\38835837utf8.csv", "D:\test\SO\38835837ansi1253.csv", "windows-1253"

For a list of the character set names that are known by a system, see the subkeys of HKEY_CLASSES_ROOT\MIME\Database\Charset in the Windows Registry:

for /F "tokens=5* delims=\" %# in ('reg query HKCR\MIME\Database\Charset') do @echo "%#"

Data (38835837utf8.csv file):

1st Line    1250    852 čeština (Čechie)
2nd Line    1251    966 русский (Россия)
3rd Line    1253    737 ελληνικά (Ελλάδα)

Output shows that those characters that can't be converted to a particular character set are converted using Character Decomposition Mapping (č=>c, š=>s, Č=>C etc.); if not applicable then those are all converted to ? question mark (common replacement character):

==> chcp 1250
Active code page: 1250

==> type D:\test\SO\38835837ansi1250.csv
1st Line        1250    852     čeština (Čechie)
2nd Line        1251    966     ??????? (??????)
3rd Line        1253    737     ???????? (??????)

==> chcp 1251
Active code page: 1251

==> type D:\test\SO\38835837ansi1251.csv
1st Line        1250    852     cestina (Cechie)
2nd Line        1251    966     русский (Россия)
3rd Line        1253    737     ???????? (??????)

==> chcp 1253
Active code page: 1253

==> type D:\test\SO\38835837ansi1253.csv
1st Line        1250    852     cestina (Cechie)
2nd Line        1251    966     ??????? (??????)
3rd Line        1253    737     ελληνικά (Ελλάδα)

来源：https://stackoverflow.com/questions/38835837/csv-file-utf-8-with-bom-to-ansi-windows-1251

标签

windows

batch-file

utf-8

vbscript

codepages