Color problem

Discussion forum for all Windows batch related topics.

Moderator: DosItHelp

Message
Author
dbenham
Expert
Posts: 2461
Joined: 12 Feb 2011 21:02
Location: United States (east coast)

Re: Color problem

#16 Post by dbenham » 01 May 2012 13:18

I found some more problem cases for jeb's code:

"."
".."
"c:"

Also, escape sequences can sometimes be problematic.

Also, the code depends on having write access to the current directory, and will overwrite any existing "x" file.

I've come up with a variant of jeb's code that I think truly can handle any printable character sequence. It uses the %temp% directory, and it has 2 versions. One for a string literal, and another for a string variable. The string variable eliminates issues with escape sequences.

The only remaining limitation I am aware of is the fact that it does not handle line wrapping well, because the backspace does not work over a line break. So if the console width is 80 characters, then a string length between 74 and 79 will not print properly.

edit - Also added optional 3rd argument /N to append newline to output using ECHO(

Code: Select all

@echo off
setlocal

call :initColorPrint

call :colorPrint 0a "a"
call :colorPrint 0b "b"
set "txt=^" & call :colorPrintVar 0c txt
call :colorPrint 0d "<"
call :colorPrint 0e ">"
call :colorPrint 0f "&"
call :colorPrint 1a "|"
call :colorPrint 1b " "
call :colorPrint 1c "%%%%"
call :colorPrint 1d ^"""
call :colorPrint 1e "*"
call :colorPrint 1f "?"
call :colorPrint 2a "!"
call :colorPrint 2b "."
call :colorPrint 2c ".."
call :colorPrint 2d "/"
call :colorPrint 2e "\"
call :colorPrint 2f "q:" /n
echo(
set complex="c:\hello world!/.\..\\a//^<%%>&|!" /^^^<%%^>^&^|!\
call :colorPrintVar 74 complex /n

call :cleanupColorPrint

exit /b

:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

:colorPrint Color  Str  [/n]
setlocal
set "str=%~2"
call :colorPrintVar %1 str %3
exit /b

:colorPrintVar  Color  StrVar  [/n]
if not defined %~2 exit /b
setlocal enableDelayedExpansion
set "str=a%DEL%!%~2:\=a%DEL%\..\%DEL%%DEL%%DEL%!"
set "str=!str:/=a%DEL%/..\%DEL%%DEL%%DEL%!"
set "str=!str:"=\"!"
pushd "%temp%"
findstr /p /A:%1 "." "!str!\..\x" nul
if /i "%~3"=="/n" echo(
exit /b

:initColorPrint
for /F "tokens=1,2 delims=#" %%a in ('"prompt #$H#$E# & echo on & for %%b in (1) do rem"') do set "DEL=%%a"
<nul >"%temp%\x" set /p "=%DEL%%DEL%%DEL%%DEL%%DEL%%DEL%.%DEL%"
exit /b

:cleanupColorPrint
del "%temp%\x"
exit /b


Dave Benham

Post Reply