So I am trying to a procedure of converting images in a directory, but it just doesn't run at all, and I fail to see what's incorrect in my batch code:

FOR /R %a in (*.png) DO ( files\pngnq -s 1 -n 16 %~fa ren *nq8.png "%~na.png" files\gimconv "%~na.png" --format_style psp --format_endian little --pixel_order faster --image_format index4 del "%~na.png" )

the error it outputs is in french "in was not expected" (in était inattendu).

EDIT: this is the orginal (working code) code:

set file=*.png
files\pngnq -s 1 -n 16 %file%
ren *nq8.png 12345.png
files\gimconv 12345.png --format_style psp --format_endian little --pixel_order faster --image_format index4
del 12345.png
ren *.gim READY4BIT.gim

1 Answer

I fail to see what's incorrect in my batch code:

FOR /R %a in (*.png) DO ( files\pngnq -s 1 -n 16 %~fa ren *nq8.png "%~na.png" files\gimconv "%~na.png" --format_style psp --format_endian little --pixel_order faster --image_format index4 del "%~na.png" )

I can see two obvious issues with the above code:

1. In a batch file you need to replace % with %% (in a batch file use %%a, in a cmd shell use %a)

2. There is a possibility some files may get processed twice, so you should use for /f together with dir).

There may be other things wrong as well, but I don't have the required programs to test it.

Use the following batch file instead:

for /f "tokens=*" %%a in ('dir /b *.png') do ( files\pngnq -s 1 -n 16 %%~fa ren *nq8.png "%%~na.png" files\gimconv "%%~na.png" --format_style psp --format_endian little --pixel_order faster --image_format index4 del "%%~na.png" )

Note:

It is critical that you use FOR /F and not the simple FOR.

The FOR /F gathers the entire result of the DIR command before it begins iterating, whereas the simple FOR begins iterating after the internal buffer is full, which adds a risk of renaming the same file multiple times.

as advised by dbenham in his answer to add "text" to end of multiple filenames:

---

Further Reading

• An A-Z Index of the Windows CMD command line - An excellent reference for all things Windows cmd line related.
• dir - Display a list of files and subfolders.
• for /f - Loop command against the results of another command.

3

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