Clean up a CSV file - batch-file

Question

I use a .bat file to move a CSV that is created every day. I now need to clean it up:
find and replace "-" to 0
find and replace empty cells with 0
remove all spaces
The CSV is only 20 lines.

Answer 1

Don't really know, what you need. Please explain more, if this doesn'w work for you:
for /f "delims=" %%a in (old.csv) do (
set "line=%%a"
setlocal enabledelayedexpansion
set "line=!line: =!"
set "line=!line:-=0!"
>> new.csv echo(!line!
endlocal
)

Answer 2

Batch files are not a good tool for this. You'd be far better off using PowerShell:
(Get-Content 'C:\path\to\in.csv') `
-replace ' ', '' `
-replace '-', '0' `
-replace '^,', '0,' `
-replace ',$', ',0' `
| % {
while ($_ -match ',,') { $_ = $_ -replace ',,', ',0,' }
$_
} | Out-File 'C:\path\to\out.csv'
or even VBScript:
Set fso = CreateObject("Scripting.FileSystemObject")
inFilename = "C:\path\to\in.csv"
outFilename = "C:\path\to\out.csv"
Set inFile = fso.OpenTextFile(inFilename)
Set outFile = fso.OpenTextFile(outFilename, 2, True)
outFile.WriteLine inFile.ReadLine 'write header
Do Until inFile.AtEndOfStream
line = inFile.ReadLine
line = Replace(line, " ", "")
line = Replace(line, "-", "0")
If Left(line, 1) = "," Then line = "0" & line
If Right(line, 1) = "," Then line = line & "0"
Do While InStr(line, ",,") > 0
line = Replace(line, ",,", ",0,")
Loop
outFile.WriteLine line
Loop
inFile.Close
outFile.Close

Answer 3

#ECHO OFF
SETLOCAL
(
FOR /f "delims=" %%i IN (yourfile.csv) DO (
SET "line=%%i"&CALL :process
)
)>newcsv.csv
GOTO :EOF
:process
SET line=%line: =%
SET line=%line:-=0%
SET line2=%line%
SET line=%line:,,=,0,%
IF NOT "%line%"=="%line2%" GOTO process
IF "%line:~0,1%"=="," SET line=0%line%
ECHO %line%
GOTO :EOF
Now the interweb fairies are finally back on board, here's my version...