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List: fop-user
Subject: Getting a list of font names without the memory hit...
From: Bernard Giannetti <thebernmeister () hotmail ! com>
Date: 2013-07-30 10:23:04
Message-ID: BLU175-W4AF524A199C83B898CACBDC560 () phx ! gbl
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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.
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<body class='hmmessage'><div dir='ltr'><font face="Arial" \
size="2">Hi,</font><div><font face="Arial" size="2"><br></font></div><div><font \
size="2"><font face="Arial">I'm making a call to </font><font face="Courier \
New">org.apache.fop.tools.fontlist.FontListGenerator.listFonts( ... )</font><span \
style="font-family: Arial;"> to get a list of font names for my desktop application. \
</span><span style="font-family: Arial;">To get the font names, I take the keys \
from the returned </span><font face="Courier New">fontFamilies SortedMap</font><font \
face="Arial">; the actual data is junked.</font></font></div><div><span \
style="font-family: Arial;"><font size="2"><br></font></span></div><div><font \
size="2"><span style="font-family: Arial;">I hadn't realised just how much memory is \
used by </span><span style="font-family: 'Courier New';">listfont( ... \
)</span><span style="font-family: Arial;"> - on some platforms such as Windows \
7, in excess of 250 MB. In this case I'm hitting out of memory \
errors.</span></font></div><div><font size="2"><span style="font-family: \
Arial;"><br></span></font></div><div><font size="2"><span style="font-family: \
Arial;">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. \
</span></font><font size="2">Digging down into <span style="font-family: \
Arial;"> </span><span style="font-family: 'Courier New';">listfont( ... \
), </span>I was wondering if it's safe to take the </font><span \
style="font-family: 'Courier New'; font-size: 10pt;">firstFamilyName</span><span \
style="font-size: 10pt;"> and place it into a list say and then drop the \
following lines for the </span><span style="font-family: 'Courier New'; \
font-size: 10pt;">containers/sort</span><span style="font-size: \
10pt;">?</span></div><div><font size="2"><br></font></div><div><div><font \
face="Courier New" size="2">Iterator iter = \
fontInfo.getFontTriplets().entrySet().iterator();</font></div><div><font \
face="Courier New" size="2">while (iter.hasNext()) {</font></div><div><font \
size="2"><span style="font-family: 'Courier New';"> </span><span \
style="font-family: 'Courier New';"> </span><font face="Courier New">Map.Entry \
entry = (Map.Entry)iter.next();</font></font></div><div><font size="2"><span \
style="font-family: 'Courier New';"> </span><span style="font-family: \
'Courier New';"> </span><font face="Courier New">FontTriplet triplet = \
(FontTriplet)entry.getKey();</font></font></div><div><font size="2"><span \
style="font-family: 'Courier New';"> </span><span style="font-family: \
'Courier New';"> </span><font face="Courier New">String key = \
(String)entry.getValue();</font></font></div><div><font size="2"><span \
style="font-family: 'Courier New';"> </span><span style="font-family: \
'Courier New';"> </span><font face="Courier New">FontSpec \
container;</font></font></div><div><font size="2"><span style="font-family: 'Courier \
New';"> </span><span style="font-family: 'Courier \
New';"> </span><font face="Courier New">if (keyBag.contains(key)) \
{</font></font></div><div><font size="2"><span style="font-family: 'Courier \
New';"> </span><span style="font-family: 'Courier \
New';"> </span><font face="Courier New"> \
keyBag.remove(key);</font></font></div><div><font face="Courier New" \
size="2"><br></font></div><div><font size="2"><span style="font-family: 'Courier \
New';"> </span><span style="font-family: 'Courier \
New';"> </span><font face="Courier New"> FontMetrics metrics = \
(FontMetrics)fonts.get(key);</font></font></div><div><font face="Courier New" \
size="2"><br></font></div><div><font size="2"><span style="font-family: 'Courier \
New';"> </span><span style="font-family: 'Courier \
New';"> </span><span style="font-family: 'Courier New';"> \
</span><span style="font-family: 'Courier New';"> </span><font \
face="Courier New">container = new FontSpec(key, \
metrics);</font></font></div><div><font size="2"><span style="font-family: 'Courier \
New';"> </span><span style="font-family: 'Courier \
New';"> </span><span style="font-family: 'Courier New';"> \
</span><span style="font-family: 'Courier New';"> </span><font \
face="Courier New">container.addFamilyNames(metrics.getFamilyNames());</font></font></div><div><font \
size="2"><span style="font-family: 'Courier New';"> </span><span \
style="font-family: 'Courier New';"> </span><span style="font-family: 'Courier \
New';"> </span><span style="font-family: 'Courier \
New';"> </span><font face="Courier New">keys.put(key, \
container);</font></font></div><div><font size="2"><span style="font-family: 'Courier \
New';"> </span><span style="font-family: 'Courier \
New';"> </span><span style="font-family: 'Courier New';"> \
</span><span style="font-family: 'Courier New';"> </span><font \
face="Courier New">String firstFamilyName = \
(String)container.getFamilyNames().first();</font></font></div><div><font \
size="2"><span style="font-family: 'Courier New';"> </span><span \
style="font-family: 'Courier New';"> </span><span style="font-family: 'Courier \
New';"> </span><span style="font-family: 'Courier \
New';"> </span><font face="Courier New">List containers = \
(List)fontFamilies.get(firstFamilyName);</font></font></div><div><font size="2"><span \
style="font-family: 'Courier New';"> </span><span style="font-family: \
'Courier New';"> </span><span style="font-family: 'Courier New';"> \
</span><span style="font-family: 'Courier New';"> </span><font \
face="Courier New">if (containers == null) {</font></font></div><div><font \
size="2"><span style="font-family: 'Courier New';"> </span><span \
style="font-family: 'Courier New';"> </span><span style="font-family: 'Courier \
New';"> </span><span style="font-family: 'Courier \
New';"> </span><span style="font-family: 'Courier New';"> \
</span><span style="font-family: 'Courier New';"> </span><span \
style="font-family: 'Courier New';">containers = new \
java.util.ArrayList();</span></font></div><div><font size="2"><span \
style="font-family: 'Courier New';"> </span><span style="font-family: \
'Courier New';"> </span><span style="font-family: 'Courier New';"> \
</span><span style="font-family: 'Courier New';"> </span><span \
style="font-family: 'Courier New';"> </span><span style="font-family: \
'Courier New';"> </span><span style="font-family: 'Courier \
New';">fontFamilies.put(firstFamilyName, containers);</span></font></div><div><font \
size="2"><span style="font-family: 'Courier New';"> </span><span \
style="font-family: 'Courier New';"> </span><span style="font-family: 'Courier \
New';"> </span><span style="font-family: 'Courier \
New';"> </span><font face="Courier New">}</font></font></div><div><font \
size="2"><span style="font-family: 'Courier New';"> </span><span \
style="font-family: 'Courier New';"> </span><span style="font-family: 'Courier \
New';"> </span><span style="font-family: 'Courier \
New';"> </span><font face="Courier \
New">containers.add(container);</font></font></div><div><font size="2"><span \
style="font-family: 'Courier New';"> </span><span style="font-family: \
'Courier New';"> </span><span style="font-family: 'Courier New';"> \
</span><span style="font-family: 'Courier New';"> </span><font \
face="Courier New">Collections.sort(containers);</font></font></div><div><font \
size="2"><span style="font-family: 'Courier New';"> </span><span \
style="font-family: 'Courier New';"> </span><span style="font-family: 'Courier \
New';">} else {</span></font></div><div><font size="2"><span style="font-family: \
'Courier New';"> </span><span style="font-family: 'Courier \
New';"> </span><span style="font-family: 'Courier New';"> \
</span><span style="font-family: 'Courier New';"> </span><font \
face="Courier New">container = (FontSpec)keys.get(key);</font></font></div><div><font \
size="2"><span style="font-family: 'Courier New';"> </span><span \
style="font-family: 'Courier New';"> </span><font face="Courier \
New">}</font></font></div><div><font size="2"><span style="font-family: 'Courier \
New';"> </span><span style="font-family: 'Courier \
New';"> </span><font face="Courier \
New">container.addTriplet(triplet);</font></font></div><div><font face="Courier New" \
size="2">}</font></div></div><div><font size="2"><br></font></div><div><font \
size="2">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!</font></div><div><font size="2"><br></font></div><div><font size="2">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.</font></div><div><font size="2"><br></font></div><div><br></div><div><div \
style="line-height:21px;"><div><font face="Arial" size="2" \
style="line-height:normal;">Thanks in advance,</font></div><div><font face="Arial" \
size="2" style="line-height:normal;"><br \
style="line-height:18px;"></font></div><div><font face="Arial" size="2" \
style="line-height: normal;">Bernard.</font></div></div><style><!--
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