[poppler] How to specify format of output numbering?

[suzuki toshiya]

Dear Abigaile,

> does that mean there is a way to specify numbering format already?

No. What I meant was...

* If there is any existing parser for the user-defined numbering format (out of
pdfimages, but in poppler), it would be possible for somebody to write a patch.
* But if there is no, the discussion about the syntax would be needed for first.

Or, "if the total number of the images exceed 1000, the numbering should be
%04d, we do not need the interface to specify the numbering format" would be
another solution. how do you think about?

Regards,
mpsuzuki

Abigaile Johannesburg wrote:
> Dear mpsuzuki,
> 
> Thank you for quoting the source file regarding numbering scheme.  When you say
> 
> "good syntax to specify numbering format, if possible, which is already used by poppler'suser interfaces."
> 
> does that mean there is a way to specify numbering format already?
> 
> Thanks,
> Abi
> 
> Jan 10, 2019, 12:49 AM by mpsuzuki at hiroshima-u.ac.jp:
> Dear Abigaile,
> 
> At present, 3-digit-numbering is hardwired, like, this
> 
> https://gitlab.freedesktop.org/poppler/poppler/blob/master/utils/ImageOutputDev.cc#L83<https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitlab.freedesktop.org%2Fpoppler%2Fpoppler%2Fblob%2Fmaster%2Futils%2FImageOutputDev.cc%23L83&data=02%7C01%7Cmpsuzuki%40hiroshima-u.ac.jp%7Cb9caafd0af1d488d21bb08d677e4edd8%7Cc40454ddb2634926868d8e12640d3750%7C1%7C0%7C636828222476265275&sdata=0%2FkYtZimHm%2BjmzXnamD%2FnyplO83WOZr4e5BqoHyn4f0%3D&reserved=0>
> 
> void ImageOutputDev::setFilename(const char *fileExt) {
> if (pageNames) {
> sprintf(fileName, "%s-%03d-%03d.%s", fileRoot, pageNum, imgNum, fileExt);
> } else {
> sprintf(fileName, "%s-%03d.%s", fileRoot, imgNum, fileExt);
> }
> }
> 
> I want to know whether good syntax to specify numbering
> format, if possible, which is already used by poppler's
> user interfaces.
> 
> Regards,
> mpsuzuki
> 
> Abigaile Johannesburg wrote:
> Hello,
> 
> The default output numbering of pdfimages is 3 digit, e.g, image-root-nnn.xxx. But if there are more than 1,000 ouput images, there will be files image-root-nnn.xxx (3 digit number sequence) and image-root-nnnn.xxx (4 digit number sequence). When processing book images in bash, the ordering needs a fix. At the moment I use rename
> 
> rename 's/img-([0-9]{3}).pbm/img-0$1.pbm/' *.pbm
> 
> Therefore I was wondering if there is a way to specify the format of output numbering directly in pdfimages.
> 
> Thanks,
> Abi
> 
>