Extension talk:PdfBook/Archive

Mediawiki 1.11.0
Version 0.0.3 didn't work anymore after an upgrade. I made a little fix to PdfBook.php around line 98 of PdfBook.php and it works again.

// while ($row = mysql_fetch_row($result)) { while ($row = $db->fetchRow($result)) {

Disclaimer. I don't know PHP for real, don't know mediawiki, don't know how to program. Just got it by inserting debug statements into PdfBook.php. Looks like mysql_fetch is censored somewhere now ;)

PS: To insert debug statements: $wgDebugLogFile = "/tmp/debug.log"; // file should be writable can be anywhere. wfDebug (.....);
 * In LocalSettings.php insert:
 * Anywhere in the code, insert

- Daniel (edutechwiki.unige.ch)
 * Thanks a lot for this, it's still not working for me in 1.11 (I've only just done my 1.11 upgrade), but I've made some changes based on your findings which have got it partially there ;-) --Nad 21:36, 21 September 2007 (UTC)
 * It seems that 1.11 is a bit more memory hungry and my large test books were killing it, after giving PHP 64MB it's working fine now! --Nad 21:41, 21 September 2007 (UTC)

Empty file downloaded
Greetings Nad,

I have been trying to use your PDFBook Mediawiki extension since it may be a great solution to an issue I have.

I have installed HTMLDoc under "c:\pogram files" and can use it on its own to create PDF Books. I have also included the "PdfBook.php" in my "Local Settings.php" file.

The issue I am having is that when I select the link to export my category as a book and select to save or open the pdf file it has 0 bytes. So, the file is created with the correct name but with no data.

Is there something else I must do to ensure HTMLDoc.exe is actually being called by your extension? Is there a required directory that it needs to be in?

Any help would be appreciated!

Thanks!
 * You have to make sure that htmldoc is in your executable PATH so that it can execute from just typing "htmldoc" without needing to supply the full pathname no matter what current directory you're in. Another thing to check would be to comment out the "@unlink($file)" line and after saving a pdf, check if it's left a tmp file in the root of your images directory, which is the data sent to htmldoc. --Nad 00:35, 6 September 2007 (UTC)

Invalid PDF File
Nad,

Thanks for your quick response!

However, I am still having issues. The File is being created and has size to it....but Adobe Reader gives me the following error."

"There is an error opening this document. This file is damaged and cannot be repaired".

HTMLDoc seems to be quitting during the conversion job.

If I add the ".html" extension to the temp file and run HTMLDoc from the command line I can convert the temp html file manully over to a PDF file.

I then compare in Notepad the one I generated and the one your script creates and notice the PDF your script creates quites after pocessing a certain amount of lines.

I have your PDFExport Extension working just fine...so I was wondering what else it could be.

Any ideas?

Thanks!
 * How long is it taking to generate the PDF before quitting? 30 seconds? if that long it could be reaching max execution time? and how large is the PDF before it bails? --Nad 20:29, 6 September 2007 (UTC)

Nad,

It only writes about 18 lines to the .pdf file and takes a couple seconds for the file to generate. It doesn't appear to quit, it saves the file like it normally would however when I edit the file in notepad it is not complete (Stops after ~18 lines with Wordwrap on)

Like I stated before, I'm using your PDFExport Extension and it works great.

Let me know what you think      --136.182.158.153 21:29, 6 September 2007 (UTC)
 * When you run htmldoc manually passing the generated tmp file to it, are you using the exact same command and parameters that the extension uses? --Nad 21:51, 6 September 2007 (UTC)

continued...

Nad,

It only writes about 18 lines to the .pdf file and takes a couple seconds for the file to generate. It doesn't appear to quit, it saves the file like it normally would however when I edit the file in notepad it is not complete (Stops after ~18 lines with Wordwrap on)

If I change this line;

$cmd = "htmldoc -t pdf --charset iso-8859-1 $cmd $file";

to

$cmd = "htmldoc -t pdf --charset iso-8859-1 $cmd $file > test.pdf";

Then I get a test.pdf in my mediawiki root folder which works perfectly


 * You could try changing the htmldoc command to use passthru like Extension:Pdf Export - I had it like that on mine but had problems with the gzip encoding, but it may work better like that for you --Nad 21:55, 6 September 2007 (UTC)

images
Is there any possibility of getting images displayed in the pdf Book as well?. would be a fantastic improvement. Any workarounds? Martin
 * I'm working on it, I just can't get them to work currently. I'm checking out some of the solutions at Extension talk:Pdf Export too as that one uses htmldoc as well. --Nad 12:39, 12 September 2007 (UTC)

A hack
In file PdfBook.php around line 118 (I may have inserted other stuff) just before "#write the HTML to a tmp file" insert this:

$ori_string = 'src="'; $repl_string = 'src="'. $wgServer; $html = str_replace ($ori_string, $repl_string, $html);

The problem is that the intermediary output file got stuff like this: src="/mediawiki/images/thumb/pict.png but you want: httpee://your.server.org/mediawiki/images/thumb/pict.png
 * 1) Write the HTML to a tmp file

This is not the best solution, a regexp hacker should actually rip away most of the html picture markup and then replace the thumb by the original pic maybe. But above is at least a minimal job. To see the intermediary file as someone said, comment the unlink at the end and the get it from the images file. //@unlink($file);

Sorry, I'm not a real programmer and have too much workload to help for real. Just wanted to produce some handouts ;) - Daniel

Same problem as section 2
I'm on Ubuntu Linux with Mediawiki 1.10. Htmldoc is in /usr/bin. I commented out the unlink command, and the temp file is empty (0 length).

I checked to be sure that my Apache user can run htmldoc -- it can. Unsure what I should try next.

By the way, your single-page export plugin works perfectly (even for images). So I know that htmldoc is not at fault here.
 * I didn't write the single page one, but the code seems pretty similar. I'll just have to see what differences there is in the code between this one and the single-page one. --Nad 22:28, 14 September 2007 (UTC)

Upload filetype
What happens when pdf is not a valid file type when uploading? Does the wiki control this with this extension, if so do I need to add pdf file types to the type of files you can upload?
 * The upload filetype is unrelated to this since exported pdf's are downloaded not uploaded. If you want to add pdf to your allowed upload filetypes, use $wgFileExtensions[] = 'pdf', you may also want to set $wgVerifyMimeType to false if it's giving you hassles when you try and upload exotic types of file. --Nad 04:11, 21 September 2007 (UTC)

More empty file downloads
--Johnp125 02:12, 25 September 2007 (UTC)

Sorry to be such a pain. I have setup a test wiki which is running fedora c 4. Please check out my test wiki and see if you can give me some direction. I have debug for the wiki in localsettings.php on. If you need admin access please email me at johnp125@yahoo.com and I'll hook you up.

http://wikitest.homelinux.net/wiki2/index.php/Main_Page
 * The output shows a bug due to 1.11 being more strict about hook return values. Try again now with the latest version, 0.0.4. Also note that even if it works, you will get just an empty document since the point of this extension is to compose a book from the content of a category, if it not placed in a category or the category contains no members then the result will be empty. To export the content of a single page you should be using Extension:Pdf Export. --Nad 03:33, 25 September 2007 (UTC)
 * However, I'm working on version 0.5 now which can be used in non-category pages and will compose the book from the article links found in the page, so that books can then be composed from explicit lists or DPL queries. --Nad 03:33, 25 September 2007 (UTC)

--Johnp125 13:28, 25 September 2007 (UTC)

Hey that sound great I'd love to help you with it.

You mentioned single page. I had 2 types of pdf downloads there.

http://192.168.1.88/wiki2/index.php?title=Catgeory:test&action=pdfbook this one should be going after the demo page with the catageory:test and then creating a pdf book from that. Is this not the right way to use the code? I know if I created more pagese and put the catageory:test under them they would get put into the pdf file as well.