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Posted to fop-users@xmlgraphics.apache.org by Bernard Giannetti <th...@hotmail.com> on 2013/07/31 00:42:42 UTC
Getting a list of font names without the memory hit...
(apologies for the double post...somehow my email got tagged to the end of an unrelated post)
Hi,
I'm making a call to org.apache.fop.tools.fontlist.FontListGenerator.listFonts( ... ) to get a list of font names for my desktop application. To get the font names, I take the keys from the returned fontFamilies SortedMap; the actual data is junked.I hadn't realised just how much memory is used by listfont( ... ) - on some platforms such as Windows 7, in excess of 250 MB. In this case I'm hitting out of memory errors.
I was wondering if there's a simpler way (uses less memory) to get just the font names (first family names)? As I said, I don't make use of the metrics and other font details...just the first family name for each font. Digging down into listfont( ... ), I was wondering if it's safe to take the firstFamilyName and place it into a list say and then drop the following lines for the containers/sort?Iterator iter = fontInfo.getFontTriplets().entrySet().iterator();while (iter.hasNext()) { Map.Entry entry = (Map.Entry)iter.next(); FontTriplet triplet = (FontTriplet)entry.getKey(); String key = (String)entry.getValue(); FontSpec container; if (keyBag.contains(key)) { keyBag.remove(key); FontMetrics metrics = (FontMetrics)fonts.get(key); container = new FontSpec(key, metrics); container.addFamilyNames(metrics.getFamilyNames()); keys.put(key, container); String firstFamilyName = (String)container.getFamilyNames().first(); List containers = (List)fontFamilies.get(firstFamilyName); if (containers == null) { containers = new java.util.ArrayList(); fontFamilies.put(firstFamilyName, containers); } containers.add(container); Collections.sort(containers); } else { container = (FontSpec)keys.get(key); } container.addTriplet(triplet);}I'm guessing a lot of memory is chewed up in the containers/sort section...but really I can't be sure as I don't fully follow what's going on!Ideally I'd just up the amount of memory supplied to the desktop application, but I don't have that option and besides, it just delays the problem of running out of memory.
Thanks in advance,Bernard.
RE: Getting a list of font names without the memory hit...
Posted by Bernard Giannetti <th...@hotmail.com>.
Thanks Chris - simplest solution is often the best:
String fonts[] = GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames();
Getting a list of fonts this way does NOT appear to impact memory at all...so much better!
I don't have the <use-cache> tag in my config file, so I assume the cache is on by default. I did a test run of creating a PDF:
With no <use-cache> present: memory used 111 MBWith <use-cache>false</use-cache> present: memory used 330 MB
I think I'll stick with the default!
Thanks again,
Bernard.
> Date: Thu, 1 Aug 2013 13:58:57 +0100
> From: bowditch_chris@hotmail.com
> To: fop-users@xmlgraphics.apache.org
> Subject: Re: Getting a list of font names without the memory hit...
>
> The auto-detect feature creates the font cache, to save time on
> sunsequent calls to FOP, you can disable the cache using the setting:
> <use-cache>false</use-cache> in your fop.xconf.
>
> I suspect the reason for the high memory consumption is your use of
> auto-detect feature. Though I've not replicated the issue. If your
> intention is to allow the user to pick any font installed on the
> Operating System, why not use the java.awt classes to list the available
> fonts instead? I've not tried it but I suspect it will use less memory
> as it doesn't need to load the full contents of every font in the system.
Re: Getting a list of font names without the memory hit...
Posted by Chris Bowditch <bo...@hotmail.com>.
The auto-detect feature creates the font cache, to save time on
sunsequent calls to FOP, you can disable the cache using the setting:
<use-cache>false</use-cache> in your fop.xconf.
I suspect the reason for the high memory consumption is your use of
auto-detect feature. Though I've not replicated the issue. If your
intention is to allow the user to pick any font installed on the
Operating System, why not use the java.awt classes to list the available
fonts instead? I've not tried it but I suspect it will use less memory
as it doesn't need to load the full contents of every font in the system.
Thanks,
Chris
On 31/07/2013 12:53, Bernard Giannetti wrote:
> Now I'm chasing my tail...looking at FontCachehas gotten me back to
> FontInfo.getFonts()!
>
> Any other ideas please?!
>
>
> ------------------------------------------------------------------------
> From: thebernmeister@hotmail.com
> To: fop-users@xmlgraphics.apache.org
> Subject: RE: Getting a list of font names without the memory hit...
> Date: Wed, 31 Jul 2013 21:33:14 +1000
>
> I'm readingorg.apache.fop.fonts.FontCache now...red-faced and fingers
> crossed!
>
>
>
> ------------------------------------------------------------------------
> From: thebernmeister@hotmail.com
> To: fop-users@xmlgraphics.apache.org
> Subject: RE: Getting a list of font names without the memory hit...
> Date: Wed, 31 Jul 2013 21:29:59 +1000
>
> The config file or the cache file?
>
> My config file has no fonts listed for PDF:
>
> <renderer mime="application/pdf">
> <filterList>
> <value>flate</value>
> </filterList>
>
> <fonts>
> <auto-detect/>
> </fonts>
> </renderer>
>
>
> > Date: Wed, 31 Jul 2013 04:26:33 -0700
> > From: djseek@yahoo.com
> > To: fop-users@xmlgraphics.apache.org
> > Subject: RE: Getting a list of font names without the memory hit...
> >
> > Why don't you just read the config file which list all the available
> fonts?
>
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RE: Getting a list of font names without the memory hit...
Posted by Bernard Giannetti <th...@hotmail.com>.
Now I'm chasing my tail...looking at FontCache has gotten me back to FontInfo.getFonts()!
Any other ideas please?!
From: thebernmeister@hotmail.com
To: fop-users@xmlgraphics.apache.org
Subject: RE: Getting a list of font names without the memory hit...
Date: Wed, 31 Jul 2013 21:33:14 +1000
I'm reading org.apache.fop.fonts.FontCache now...red-faced and fingers crossed!
From: thebernmeister@hotmail.com
To: fop-users@xmlgraphics.apache.org
Subject: RE: Getting a list of font names without the memory hit...
Date: Wed, 31 Jul 2013 21:29:59 +1000
The config file or the cache file?
My config file has no fonts listed for PDF:
<renderer mime="application/pdf"> <filterList> <value>flate</value> </filterList>
<fonts> <auto-detect/> </fonts></renderer>
> Date: Wed, 31 Jul 2013 04:26:33 -0700
> From: djseek@yahoo.com
> To: fop-users@xmlgraphics.apache.org
> Subject: RE: Getting a list of font names without the memory hit...
>
> Why don't you just read the config file which list all the available fonts?
RE: Getting a list of font names without the memory hit...
Posted by Bernard Giannetti <th...@hotmail.com>.
I'm reading org.apache.fop.fonts.FontCache now...red-faced and fingers crossed!
From: thebernmeister@hotmail.com
To: fop-users@xmlgraphics.apache.org
Subject: RE: Getting a list of font names without the memory hit...
Date: Wed, 31 Jul 2013 21:29:59 +1000
The config file or the cache file?
My config file has no fonts listed for PDF:
<renderer mime="application/pdf"> <filterList> <value>flate</value> </filterList>
<fonts> <auto-detect/> </fonts></renderer>
> Date: Wed, 31 Jul 2013 04:26:33 -0700
> From: djseek@yahoo.com
> To: fop-users@xmlgraphics.apache.org
> Subject: RE: Getting a list of font names without the memory hit...
>
> Why don't you just read the config file which list all the available fonts?
RE: Getting a list of font names without the memory hit...
Posted by Bernard Giannetti <th...@hotmail.com>.
The config file or the cache file?
My config file has no fonts listed for PDF:
<renderer mime="application/pdf"> <filterList> <value>flate</value> </filterList>
<fonts> <auto-detect/> </fonts></renderer>
> Date: Wed, 31 Jul 2013 04:26:33 -0700
> From: djseek@yahoo.com
> To: fop-users@xmlgraphics.apache.org
> Subject: RE: Getting a list of font names without the memory hit...
>
> Why don't you just read the config file which list all the available fonts?
RE: Getting a list of font names without the memory hit...
Posted by Bonekrusher <dj...@yahoo.com>.
Why don't you just read the config file which list all the available fonts?
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RE: Getting a list of font names without the memory hit...
Posted by Bernard Giannetti <th...@hotmail.com>.
I've done some more digging/testing and noticed that when I get the fonts map...
FontInfo fontInfo = new FontInfo();configurator.setupFontInfo( documentHandler, fontInfo );Map fonts = fontInfo.getFonts();
(the above essentially comes straight out of listfonts() and its subcalls)
the fontInfo.getFonts() was returning a Collections.unmodifiableMap(this.fonts) which I initially thought was the memory hog. Well it sort of is, but it is not the main culprit.
Noticing that this.fonts is private, I used reflection to access the this.fonts directly (so no copy took place) and still the memory was excessive (essentially little difference to what I've initially seen).
On digging deeper, the big memory hit is happening within configurator.setupFontInfo( documentHandler, fontInfo );.
Let me back up and ask a couple of sanity questions...first, to reiterate: my desktop Java application allows a user to create PDF reports (from XML and XSL) by making direct Java calls to FOP (that is, I do NOT invoke FOP from the command line).
1) I want the user to be able to choose the name of a font for a given report. Should I be getting the font names by calling FontListGenerator.listFonts()?
2) I noticed in the guts of configurator.setupFontInfo(), there is a font cache file which is written. Is it possible to get the fonts names from this file instead?
In short, I am not fussed on how I get the font names so long as the memory doesn't go through the roof!
From: thebernmeister@hotmail.com
To: fop-users@xmlgraphics.apache.org
Subject: RE: Getting a list of font names without the memory hit...
Date: Wed, 31 Jul 2013 13:17:32 +1000
I'm using FOP inside my desktop app. I use FOP to combine .xml data files and .xsl template files into PDFs. I wanted to give the user the choice of font to use for the PDF text and so I am calling FOP code to get that list of fonts.
Date: Tue, 30 Jul 2013 21:41:10 -0500
From: lmpmbernardo@gmail.com
To: fop-users@xmlgraphics.apache.org
Subject: Re: Getting a list of font names without the memory hit...
Are you using FOP in your Desktop app
(meaning you feed and FO file and output one of the supported
formats) or you just want to use some classes to get the list of
fonts in your system?
On 7/30/13 5:42 PM, Bernard Giannetti wrote:
(apologies for the double post...somehow
my email got tagged to the end of an unrelated post)
Hi,
I'm making a call to org.apache.fop.tools.fontlist.FontListGenerator.listFonts(
... ) to get a list of font names
for my desktop application. To get the font names, I take the keys from the
returned fontFamilies
SortedMap; the actual data is
junked.
I hadn't
realised just how much memory is used by listfont(
... ) - on some platforms such as Windows 7, in
excess of 250 MB. In this case I'm hitting out of
memory errors.
I was
wondering if there's a simpler way (uses less memory) to
get just the font names (first family names)? As I
said, I don't make use of the metrics and other font
details...just the first family name for each font. Digging down into listfont(
... ), I was wondering if it's safe to take the firstFamilyName and place it
into a list say and then drop the following lines for the containers/sort?
Iterator iter =
fontInfo.getFontTriplets().entrySet().iterator();
while (iter.hasNext()) {
Map.Entry
entry = (Map.Entry)iter.next();
FontTriplet
triplet = (FontTriplet)entry.getKey();
String
key = (String)entry.getValue();
FontSpec
container;
if
(keyBag.contains(key)) {
keyBag.remove(key);
FontMetrics metrics = (FontMetrics)fonts.get(key);
container = new FontSpec(key,
metrics);
container.addFamilyNames(metrics.getFamilyNames());
keys.put(key, container);
String firstFamilyName =
(String)container.getFamilyNames().first();
List containers =
(List)fontFamilies.get(firstFamilyName);
if (containers == null) {
containers = new
java.util.ArrayList();
fontFamilies.put(firstFamilyName,
containers);
}
containers.add(container);
Collections.sort(containers);
} else {
container =
(FontSpec)keys.get(key);
}
container.addTriplet(triplet);
}
I'm guessing a lot
of memory is chewed up in the containers/sort
section...but really I can't be sure as I don't fully
follow what's going on!
Ideally I'd just up
the amount of memory supplied to the desktop application,
but I don't have that option and besides, it just delays
the problem of running out of memory.
Thanks in advance,
Bernard.
RE: Getting a list of font names without the memory hit...
Posted by Bernard Giannetti <th...@hotmail.com>.
I'm using FOP inside my desktop app. I use FOP to combine .xml data files and .xsl template files into PDFs. I wanted to give the user the choice of font to use for the PDF text and so I am calling FOP code to get that list of fonts.
Date: Tue, 30 Jul 2013 21:41:10 -0500
From: lmpmbernardo@gmail.com
To: fop-users@xmlgraphics.apache.org
Subject: Re: Getting a list of font names without the memory hit...
Are you using FOP in your Desktop app
(meaning you feed and FO file and output one of the supported
formats) or you just want to use some classes to get the list of
fonts in your system?
On 7/30/13 5:42 PM, Bernard Giannetti wrote:
(apologies for the double post...somehow
my email got tagged to the end of an unrelated post)
Hi,
I'm making a call to org.apache.fop.tools.fontlist.FontListGenerator.listFonts(
... ) to get a list of font names
for my desktop application. To get the font names, I take the keys from the
returned fontFamilies
SortedMap; the actual data is
junked.
I hadn't
realised just how much memory is used by listfont(
... ) - on some platforms such as Windows 7, in
excess of 250 MB. In this case I'm hitting out of
memory errors.
I was
wondering if there's a simpler way (uses less memory) to
get just the font names (first family names)? As I
said, I don't make use of the metrics and other font
details...just the first family name for each font. Digging down into listfont(
... ), I was wondering if it's safe to take the firstFamilyName and place it
into a list say and then drop the following lines for the containers/sort?
Iterator iter =
fontInfo.getFontTriplets().entrySet().iterator();
while (iter.hasNext()) {
Map.Entry
entry = (Map.Entry)iter.next();
FontTriplet
triplet = (FontTriplet)entry.getKey();
String
key = (String)entry.getValue();
FontSpec
container;
if
(keyBag.contains(key)) {
keyBag.remove(key);
FontMetrics metrics = (FontMetrics)fonts.get(key);
container = new FontSpec(key,
metrics);
container.addFamilyNames(metrics.getFamilyNames());
keys.put(key, container);
String firstFamilyName =
(String)container.getFamilyNames().first();
List containers =
(List)fontFamilies.get(firstFamilyName);
if (containers == null) {
containers = new
java.util.ArrayList();
fontFamilies.put(firstFamilyName,
containers);
}
containers.add(container);
Collections.sort(containers);
} else {
container =
(FontSpec)keys.get(key);
}
container.addTriplet(triplet);
}
I'm guessing a lot
of memory is chewed up in the containers/sort
section...but really I can't be sure as I don't fully
follow what's going on!
Ideally I'd just up
the amount of memory supplied to the desktop application,
but I don't have that option and besides, it just delays
the problem of running out of memory.
Thanks in advance,
Bernard.
Re: Getting a list of font names without the memory hit...
Posted by Luis Bernardo <lm...@gmail.com>.
Are you using FOP in your Desktop app (meaning you feed and FO file and
output one of the supported formats) or you just want to use some
classes to get the list of fonts in your system?
On 7/30/13 5:42 PM, Bernard Giannetti wrote:
> (apologies for the double post...somehow my email got tagged to the
> end of an unrelated post)
>
>
> Hi,
>
> I'm making a call to
> org.apache.fop.tools.fontlist.FontListGenerator.listFonts( ... ) to
> get a list of font names for my desktop application. To get the font
> names, I take the keys from the returned fontFamilies SortedMap; the
> actual data is junked.
>
> I hadn't realised just how much memory is used by listfont( ... ) - on
> some platforms such as Windows 7, in excess of 250 MB. In this case
> I'm hitting out of memory errors.
>
> I was wondering if there's a simpler way (uses less memory) to get
> just the font names (first family names)? As I said, I don't make use
> of the metrics and other font details...just the first family name for
> each font. Digging down into listfont( ... ), I was wondering if it's
> safe to take the firstFamilyName and place it into a list say and then
> drop the following lines for the containers/sort?
>
> Iterator iter = fontInfo.getFontTriplets().entrySet().iterator();
> while (iter.hasNext()) {
> Map.Entry entry = (Map.Entry)iter.next();
> FontTriplet triplet = (FontTriplet)entry.getKey();
> String key = (String)entry.getValue();
> FontSpec container;
> if (keyBag.contains(key)) {
> keyBag.remove(key);
>
> FontMetrics metrics = (FontMetrics)fonts.get(key);
>
> container = new FontSpec(key, metrics);
> container.addFamilyNames(metrics.getFamilyNames());
> keys.put(key, container);
> String firstFamilyName = (String)container.getFamilyNames().first();
> List containers = (List)fontFamilies.get(firstFamilyName);
> if (containers == null) {
> containers = new java.util.ArrayList();
> fontFamilies.put(firstFamilyName, containers);
> }
> containers.add(container);
> Collections.sort(containers);
> } else {
> container = (FontSpec)keys.get(key);
> }
> container.addTriplet(triplet);
> }
>
> I'm guessing a lot of memory is chewed up in the containers/sort
> section...but really I can't be sure as I don't fully follow what's
> going on!
>
> Ideally I'd just up the amount of memory supplied to the desktop
> application, but I don't have that option and besides, it just delays
> the problem of running out of memory.
>
>
> Thanks in advance,
>
> Bernard.