| | <<<Back 1 day (to 2018/03/25) | 20180326 |
| Rutkay | Hi all :handsup: | 08:24.55 |
| | I have a huge throuble | 08:25.03 |
| | I'm trying to run "gs -q -dNOPAUSE -sDEVICE=tiffg4 -r204x196 -sOutputFile=$outfile $infile -c quit >/dev/null 2>/dev/null | 08:25.57 |
| | My pdf has Arial font and output tiff is rendered very bad, half broken half normal | 08:26.28 |
| kens | You're almost certainly going to have to share the PDF file | 08:26.47 |
| Rutkay | I'm uploading in a sec | 08:27.21 |
| kens | You'll also need to let us know the operating system (presumably either Linux or MacOS) and the version of Ghostscript you are using. | 08:27.54 |
| | And where you got the binary from | 08:28.03 |
| Rutkay | I'm running on Linux | 08:28.33 |
| | https://ufile.io/77k33 | 08:28.34 |
| kens | (ie a system packager, built fomr source etc) | 08:28.39 |
| Rutkay | Resulting file is this one | 08:28.42 |
| chrisl | I can't help but feel that in the act of trying to diagnose a problem, using "-q" isn't a good idea | 08:28.53 |
| Rutkay | Source is this one https://ufile.io/9njry | 08:28.59 |
| kens | chrisl and sending the back channel to /dev/null :-) | 08:29.12 |
| | Rutkay : did you get those the wrong way round ? The fist link looks like a TIFF file | 08:29.50 |
| Rutkay | When I use Calibri or TimesNewRoman, it is rendered good | 08:29.55 |
| | Yeah I'm trying to render into tiff | 08:30.19 |
| chrisl | The PDF doesn't "have Arial" | 08:30.20 |
| kens | In that case you'll get a substitute | 08:30.46 |
| chrisl | I would guess that some of the messages you're ignoring by sending them to /dev/null and/or using -q are telling you what fonts are actually being used | 08:31.14 |
| Rutkay | I'm trying to not redirect outputs | 08:31.45 |
| chrisl | *And* it's not Arial, but ArialMT | 08:31.48 |
| kens | OK its using 2 different copies of Arial | 08:31.57 |
| Rutkay | Hmm | 08:32.01 |
| | How can I substitute if it is ArialMT | 08:32.08 |
| kens | One is embedded as a TrueType font, the other as a CIDFont with TrueType outliens | 08:32.12 |
| Rutkay | Which files should I write this one | 08:32.17 |
| kens | WHich is why you get two different substitutions | 08:32.24 |
| | Both are called ArialMT | 08:32.43 |
| | The CIDFont is embedded | 08:32.53 |
| | The regular fortn is not | 08:32.57 |
| chrisl | Um, Rutkay what version of Ghostscript are you using? | 08:33.05 |
| kens | So you will get a substitute font for the missing one. | 08:33.11 |
| Rutkay | Basically my problem is cannot rendering this file into a good one. How can I do substitution for these 2 fonts? | 08:33.23 |
| | I'm usin 8.70 | 08:33.26 |
| kens | As chrisl says, the messages you are throwing away will tell you this, and tell you what font is being used instead | 08:33.27 |
| | 8.70 seriously ? | 08:33.36 |
| | You need to upgrade | 08:33.40 |
| chrisl | Rutkay: It works fine with 9.21 | 08:33.40 |
| Rutkay | Is it too old :d | 08:33.42 |
| chrisl | And, FWIW, we're just released 9.23 | 08:34.02 |
| Rutkay | In short, you're saying that when I upgrade the gs to 9.23, it would work while not doing anything more than upgrade? | 08:34.25 |
| chrisl | 8.70 must be about 9-10 years old | 08:34.25 |
| kens | 8 years old according to Git | 08:34.36 |
| Rutkay | Omg what am I doing :D | 08:34.45 |
| | So, let me ask again, you're saying that when I upgrade the gs to 9.23, it would work while not doing anything more than upgrade? | 08:35.04 |
| chrisl | Rutkay: I'm saying it works for me with 9.23 as configured on my Ubuntu Linux install | 08:35.04 |
| kens | : You can probably 'fix' 8.70 by adding a font definition to its fotnmap, but I'd strongly recommend upgrading | 08:35.21 |
| | It depends what you mean by 'work' | 08:35.40 |
| Rutkay | To try that out, how can I add font definitions for these fonts | 08:35.42 |
| chrisl | Rutkay: The problem is, your file requires a font substitute, and that relies (at least partly) on the configuration | 08:35.45 |
| Rutkay | To make this pdf rendered good | 08:35.49 |
| kens | You will still get a substitute font | 08:35.49 |
| | The substitution with 9.23 is better than with 8.70 | 08:36.08 |
| | You can edit fontmap.GS and add a definition for the fotn called ArialMT | 08:36.32 |
| chrisl | Rutkay: You could try the 9.23 binary from here: https://github.com/ArtifexSoftware/ghostpdl-downloads/releases | 08:36.44 |
| Rutkay | I agree with you, but for a quick trial how can I make substitution done with this 8.70? | 08:36.47 |
| kens | Then when a missing font by that name is encountered, Ghostscript will consult the fontmap and use the substitue. | 08:37.03 |
| chrisl | *but* if your system is old enough to have 8.70, I can't be sure the binary tehre will run | 08:37.06 |
| kens | fontmap.GS is found in /ghostpdl/Resource/Init IIRC | 08:37.26 |
| | But that's probably not quite true for 8.780 | 08:37.35 |
| | 8.70 | 08:37.39 |
| chrisl | It won't be try in a distro installation, either | 08:37.50 |
| | s/try/true | 08:37.56 |
| Rutkay | Is that enough to add this line /Arial (bchr.pfa) ; | 08:38.06 |
| kens | You'll have to supply a path for the font too I would think | 08:38.25 |
| chrisl | It's not Arial, it's ArialMT | 08:38.36 |
| kens | Good point | 08:38.43 |
| Rutkay | I got bchr.pfa from another line | 08:38.51 |
| | Changing into ArialMT | 08:38.57 |
| kens | I don't know what bchr.pfa is, I very much doubt its compatible with Arial though | 08:39.04 |
| chrisl | FWIW, I'm not convinced that will make the file work with 8.70 | 08:39.36 |
| kens | Obviously, if you want to use a version of Arial as the substitute, then you will need a copy of the Arial font somewhere. | 08:39.43 |
| Rutkay | Omg it is worked | 08:39.47 |
| chrisl | Oh, well, that's odd.... | 08:39.57 |
| Rutkay | You save my time! | 08:39.58 |
| | I love you guyz! | 08:40.12 |
| chrisl | Anyway, glad it worked | 08:40.20 |
| Rutkay | I'm absolutely thinking about migration | 08:40.24 |
| chrisl | *Please* upgrade your system! | 08:40.28 |
| Rutkay | Thank you for your suggestions | 08:40.32 |
| | Thanks :) | 08:40.38 |
| chrisl | Nevermind Ghostscript, a system that old must be riddled with security issues | 08:40.59 |
| Rutkay_ | Hi @kens and @chrisl I wrote about font issue a couple hours ago | 09:42.21 |
| kens | Yep | 09:42.28 |
| Rutkay_ | I forgot asking about how to add ArialMT font instead of creating an alias | 09:42.48 |
| kens | Umm, what do you mean by an 'alias' ? | 09:43.08 |
| | When you add a font to fontmap.GS you are telling Ghostscript to substitute the requested font with teh one in the fontmap | 09:43.26 |
| | That's not an 'alias' | 09:43.38 |
| | Its a directive for which substitute to use | 09:43.46 |
| | If the original font is missing, tehn you *must* use a substitute. | 09:44.02 |
| | Its possible that the substitute is in fact the same font as the ooriginal of course. | 09:44.16 |
| Rutkay_ | Adding this line into Fontmap.GS /ArialMT (bchr.pfa) ; | 09:44.29 |
| | Actually I want to add ArialMT font in this case | 09:44.44 |
| kens | Right that substitutes /ArialMT with whatever font is in bchar.pfa | 09:44.48 |
| Rutkay_ | How to find its pfa | 09:44.50 |
| kens | Then you will need a copy of ArialMT | 09:44.57 |
| | There is no .pfa file for ArailMT because its a TrueType font (supplied with Windows) not a PostScript font. | 09:45.17 |
| Rutkay_ | I have looked at fonts documentation but not in detail. Let me ask you which fonts are supported or valid basically and which fonts can I add exclusively? | 09:46.28 |
| kens | Ghostscritp will support any of Type 1, TYpe 2 (Compact Font Format), type 3 or type 42 fotn outlines. It will support CIDFonts whose outlines are any fo the preceding basic font types. | 09:47.16 |
| | For PDF files we support TrueType fonts and for PCL we support the various kinds of downloaded PCL fonts (note that you need a licecnce for a different fotn engine if you want to use Inteelifotns). For XPS we support TrueType | 09:48.18 |
| | Additionally (not spec) we support the use of TrueType fonts as substitutes for any of the preceding types. | 09:48.44 |
| | This is dependent on heuristics in the code to try and create a reasonable matching fron from the TrueType substitute font. | 09:49.09 |
| | This is never guaranteed to be possible | 09:49.19 |
| Rutkay_ | Thanks for your explanation Kens. I forgot to share my system info : Linux 2.6.32-696.20.1.el6.x86_64 #1 SMP Fri Jan 12 15:07:59 EST 2018 x86_64 x86_64 x86_64 GNU/Linux | 09:50.02 |
| | Is that make any difference in your comments? | 09:50.19 |
| kens | Nope | 09:50.23 |
| | Ghostscript includes all its own font interpreters, it doesn't rely on the OS for any of that. | 09:50.40 |
| Rutkay_ | As I understand at the first place ArialMT is a TrueType font so it is not supported. I'm wrong I think? | 09:51.40 |
| kens | TrueType fonts are supported (when embedded) in PDF and XPS files | 09:51.59 |
| | Additionally (additional to the specification) Ghostscript cna use TrueType fonts as substitutes for missing fonts in any of the input types it supports (PS, PDF, PCL, PCL-XL, XPS) | 09:52.43 |
| | But since there is no specification for this, it is all basically guesswork | 09:53.18 |
| | Mostly it works, sometiems it doesn't | 09:53.27 |
| Rutkay_ | I've shared a file which I used to turn into pdf to tiff. It has 2 fonts in PDF-fontinfo from the Windows Adobe PDF Reader GUI. One of them is embedded and the other one is not from the GUI seem again. The problem is that not embedded one then? | 09:53.41 |
| kens | When it doesn't work, if people report it we will try to fix it so it does work (withotu breaking anything else) | 09:53.44 |
| | It doesn't (precisely) have two fonts, | 09:53.58 |
| | its has a Font and a CIDFont | 09:54.05 |
| | These are different things | 09:54.10 |
| | The CIDFont is embedded, the Font is not | 09:54.19 |
| | So Ghostscript is forced to use a substitute fotn for the missing Font. | 09:54.38 |
| | As you have (hopefully) noticed, newer versions do a better job | 09:54.56 |
| | The only real way for this to be correct is to remake the PDF file with all the fonts embedded. | 09:55.26 |
| | *ANY* PDF file which has missing fonts will get font substitution on *every* PDF consumer | 09:55.43 |
| | The quality of the substitution depends on many things, not least which fonts are available for the PDF consumer to use as a substitute | 09:56.11 |
| | Obviously if you open the PDF file on a Windows machine, where ArialMT is available, then the PDF consumer *may* be able to use that font as a substitute | 09:56.41 |
| Rutkay_ | I'm going to study about all you said, I'm really appreciated Kens. | 09:57.20 |
| kens | SO if, for example, I added a line to fontmap.GS hich pointed to a Windows font file, when running on Windows, then I might expect a 'better' substitution. If, however, I tried ot open the file on say an Android device, I woudl not get ArialMT. | 09:57.43 |
| Rutkay_ | To make it clear, if all the fonts are embedded, we suppose that the the ArialMT is rendered rightly, right? | 09:58.15 |
| kens | This is why its a *really* good idea to embed fonts in a PDF file :-) | 09:58.18 |
| | If the ArialMT Font had been embedded in the PDF file, then Ghostscritp (and any other PDF consumer) would use that font, and the file would render the same (within reason) on every PDF consumer | 09:58.53 |
| Rutkay_ | Thank you Kens, I'm going to study on all we talked. Have a nice day, I may bother you within a day again :D | 10:00.08 |
| kens | No problem | 10:00.19 |
| | This is a complex area :-) | 10:00.29 |
| sebras | kens: chrisl: I had shelley OK this: http://git.ghostscript.com/?p=user/sebras/ghostpdl.git;a=commitdiff;h=41d6119463a5f013ecbe5d55d2eb707a47fdd294;hp=af2cf274d086e9140b388b7b1d92ab7753108491 | 13:26.41 |
| | unless you protest I'll go ahead and merge it. | 13:26.51 |
| kens | I can't comment really | 13:27.24 |
| chrisl | Me neither - happy to go with Shelly's judgment | 13:27.54 |
| sebras | great, I was more looking for something like "no, not now! because the git is in release state lockdown" or something. :) | 13:28.35 |
| kens | Oh we've finished the release | 13:28.46 |
| chrisl | We also don't lock down git for releases | 13:28.57 |
| kens | And we don't lock it anyway since we switched to Git | 13:29.03 |
| sebras | chrisl: I like that. :) | 13:29.05 |
| | chrisl: who is mr cloos and why is he excluded from receiving mail from my bugzilla? (he's not the reporter or the assignee) | 13:31.20 |
| kens | James Cloos, how do you know he's excluded ? | 13:31.39 |
| | I wasn't even aware that was possible | 13:31.46 |
| sebras | kens: bugzilla told me when setting to RESOVLED FIXED. | 13:32.00 |
| kens | Really ? I've never seen that, which bug report ? | 13:32.13 |
| chrisl | sebras: He's an interested by-stander for Ghostscript development | 13:32.26 |
| sebras | kens: 699142. | 13:32.31 |
| kens | Oh its a security bug | 13:32.42 |
| sebras | chrisl: ok, so perhaps because this is a security bug? | 13:32.44 |
| | chrisl: bug otherwise he receives all gs bug reports? | 13:32.57 |
| kens | Only members of the security group can get those | 13:32.58 |
| chrisl | Almost certainly | 13:33.03 |
| sebras | aha. | 13:33.11 |
| chrisl | James used to be fairly active in testing and (I think) occasional contributions | 13:33.49 |
| sebras | he reported an issue about a document for mupdf in 2010 on jbig2-devel. no one responded and the PDF is not gone from the web. maybe I ought to e-mail him and see if he has a local copy of the PDF (it presumably involved JBIG2 bistreams, hence my interest) | 13:34.00 |
| chrisl | sebras: Do you have the name of the PDF? | 13:34.29 |
| kens | No harm in asking, certainly | 13:34.31 |
| sebras | chrisl: https://ghostscript.com/pipermail/jbig2-dev/2010-January/000119.html | 13:39.20 |
| chrisl | sebras: I'd definitely ask - James has always been helpful when I've asked him for help | 13:40.08 |
| sebras | I also noticed that someone sent a fix for the testsuite (similar to the one I pushed the other day) back in 2012, but no one looked, oops. :) | 13:40.14 |
| kens | Oh God, we've got a style critic | 13:44.52 |
| chrisl | Well, he's showing impressive copy'n'paste skills from whatever static analysis tool he's running | 13:46.47 |
| kens | Indeed..... | 13:46.54 |
| | I've passe don the halftone one because that *does* look like a typo | 13:47.07 |
| | I expect I'll close the ohter | 13:47.12 |
| | After I've read it properly | 13:47.21 |
| sebras | seems to be cppcheck. | 13:47.53 |
| chrisl | I think the gstype42.c is a fair point - in code we almost certainly never use | 13:48.13 |
| kens | Hmm, actually, reading that, it does look suspicious | 13:50.28 |
| | But I still don't want him raising every cppcheck message individually | 13:50.46 |
| chrisl | I'll fix the gstype42.c | 13:52.03 |
| kens | Anyone got an opinion they'd like to share on gsdevice.c line 198 ? | 13:52.18 |
| chrisl | Basically, same issue | 13:52.55 |
| kens | I must have missed these when I went through the cppcheck errors | 13:52.58 |
| | But there are so many..... | 13:53.05 |
| | Yeah it looks like a simple typo | 13:53.16 |
| chrisl | So, the gs_newpath() bit is right, the rest look iffy | 13:53.39 |
| kens | OK so I'll change gsdevice.c | 13:53.42 |
| chrisl | Oh, actually gs_newpath and gs_moveto look okay | 13:54.09 |
| kens | :-) Was just writing that | 13:54.18 |
| | gs_fill also looks OK | 13:54.26 |
| | Seems to be just gs_setgray | 13:54.34 |
| | I really don't like that kind of if statement, but well, not going to go through GS and change them all | 13:55.15 |
| | Of course, since we never build the halftone generator, I'll never have seen the warnigns from the build | 13:58.34 |
| | chrisl spams the cluster :-) | 14:46.56 |
| chrisl | I warned you I have a bunch of warning fixes I'd done during the release process | 14:47.25 |
| kens | Anyone might think you were tor8 :-) | 14:47.41 |
| chrisl | It's not quite *that* many commits! | 14:47.55 |
| sebras | chrisl: ha! mr cloos had the old file from 2010! :) | 16:16.08 |
| chrisl | sebras: I'm not surprised! | 16:17.00 |
| sebras | chrisl: I'm surprised his drives hasn't been lost or reformatted in 8 years... | 16:17.24 |
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