CODEWITHSUNDEEP
batch-filebatch-rename
Bharath
Bharath

Reputation: 55

files with extra suffix in batch

I'm trying to list all the files which have extra suffix after the extension E.g: .txt.1 or .txt.2 etc..

I'm using txt. but it's giving all the file names instead of only the files with extra suffix

for %%A in (*txt.*) do (call :renum "%%A")

after this I'm writing my program to rename the files accordingly. Can someone please check and help.

Upvotes: 3

Views: 390

Answers (3)

zb226
zb226

Reputation: 10500

One solution would be to filter by extension inside the loop:

FOR %%A IN (*txt.*) DO (
    IF NOT "%%~xA"==".txt" CALL :renum "%%A"
)

This works by using the "enhanced substitution of FOR variable references", in this case %%~xA. You can get an overview of all the available substitutions by executing FOR /?.

Update:

  • This solution does not work case-insensitively, because that was neither explicitly demanded or prohibited. Use IF /I instead of plain IF if case-insensivity is desired.
  • As dbenham notes, there are edge cases:
    • name.txt.txt will not be processed. If that's OK is not clearly stated, but rather likely.
    • name_txt.ext will be processed, which is due to the given wildcard *txt.* and can be avoided by using *.txt.* instead. My rationale to not change it in the first place was that only the OP knows his actual set of files, and I assumed he had a reason for choosing it (a situation common in these types of questions).

Upvotes: 2

dbenham
dbenham

Reputation: 130819

I would use FINDSTR with DIR /B and FOR /F

The following will process names with any number of extra extensions like name.txt.ext and name.txt.ext.ext, etc. This includes a name like name.txt.txt

for /f "delims= eol=:" %%F in (
  'dir /b /a-d *.txt.*^|findstr /i "\.txt\."'
) do call :renum "%%F"

This variation will only process names with a single extra extension like name.txt.ext (including name.txt.txt)

for /f "delims= eol=:" %%F in (
  'dir /b /a-d *.txt.*^|findstr /i "\.txt\.[^.]*$"'
) do call :renum "%%F"

You might also check into my JREN.BAT regular expression file renaming utility. It can probably filter and rename all your files in one step, without any need for a custom batch script.

For example, the following will only rename files looking like "name.txt.ext", and transform them into "name_ext.txt"

jren "(\.txt)\.([^.]+)$" "_$2$1" /i

Upvotes: 1

aschipfl
aschipfl

Reputation: 34909

You could use two nested for loops like this:

rem // Corrected file pattern (added a `.`):
for %%A in ("*.txt.*") do (
    rem // Check (last) file extension:
    if /I not "%%~xA"==".txt" (
        rem // Remove (last) file extension:
        for %%B in ("%%~nA") do (
            rem // Check next-to-last file ext.:
            if /I "%%~xB"==".txt" (
                call :renum "%%~A"
            )
        )
    )
)

According to the help of for (type for /? in a command prompt window), the ~x modifier of the for variable retrieves the file extension (which is the last dot . and everything after). The ~n modifier retrieves all but the file extension, hence the file (base) name. The code above uses two nested for loops to get the last and the next-to-last file extensions and checking them against .txt (in a case-insensitive manner).

Note that the call command line is not executed for files ending in .txt.txt.

Upvotes: 1

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