Syntax for forcing a FOP debug mode in ant script - ant

Question

I'm trying to troubleshoot a fop problem and I'm thinking that going from the default logging to debug might help. The fop doc says that I need to pass messagelevel="debug", but every variation of the syntax in my ant script fails. I know this is more of an ant question, but I'm wondering is anyone has run into this. Here's my non-working code:
<macrodef name="fop">
<attribute name="in" />
<attribute name="out" />
<sequential>
<java classname="org.apache.fop.cli.Main" fork="true"
failonerror="true">
<arg line="-fo #{in}" />
<arg line="-pdf #{out} messagelevel="debug" />
<arg line="-c ${FopConfig}" />
<classpath>
<pathelement location="${FopBuild}" />
<pathelement location="${FopAvalon}" />
<pathelement location="${FopBatik}" />
<pathelement location="${FopCommonsIo}" />
<pathelement location="${FopCommonsLogging}" />
<pathelement location="${FopFopHyph}" />
<pathelement location="${FopJaiCodec}" />
<pathelement location="${FopJaiCore}" />
<pathelement location="${FopSerializer}" />
<pathelement location="${FopXalan}" />
<pathelement location="${FopXerces}" />
<pathelement location="${FopXmlApis}" />
<pathelement location="${FopXmlApisExt}" />
<pathelement location="${FopXmlGraphics}" />
</classpath>
</java>
</sequential>
</macrodef>
I've also tried this, with the arg as a separate line:
<macrodef name="fop">
<attribute name="in" />
<attribute name="out" />
<sequential>
<java classname="org.apache.fop.cli.Main" fork="true"
failonerror="true">
<arg line="-fo #{in}" />
<arg line="-pdf #{out} />
<arg line"messagelevel="debug"" />
<arg line="-c ${FopConfig}" />
<classpath>
<pathelement location="${FopBuild}" />
<pathelement location="${FopAvalon}" />
<pathelement location="${FopBatik}" />
<pathelement location="${FopCommonsIo}" />
<pathelement location="${FopCommonsLogging}" />
<pathelement location="${FopFopHyph}" />
<pathelement location="${FopJaiCodec}" />
<pathelement location="${FopJaiCore}" />
<pathelement location="${FopSerializer}" />
<pathelement location="${FopXalan}" />
<pathelement location="${FopXerces}" />
<pathelement location="${FopXmlApis}" />
<pathelement location="${FopXmlApisExt}" />
<pathelement location="${FopXmlGraphics}" />
</classpath>
</java>
</sequential>
</macrodef>
I'm sure I'm not seeing something simple.

Answer 1

Try escaping the double quotes (") with ":
<arg line="messagelevel="debug"" />
It seems there is already an Ant task for the purpose of calling FOP. Any reason why you're not using it?

Answer 2

Thanks - your syntax change let me pass that string to the fop processor, which told me that "messagelevel="debug"" is meaningless, but it did spit out the whole usage help file. It turns out that debug mode is invoked with "-d". Anyways, here's the whole usage help text for anybody else:
FOP USAGE
fop [options] [-fo|-xml] infile [-xsl file] [-awt|-pdf|-mif|-rtf|-tiff|-png|-pcl|-ps|-txt|-at [mime]|-print] <outfile>
[OPTIONS]
-version print FOP version and exit
-d debug mode
-x dump configuration settings
-q quiet mode
-c cfg.xml use additional configuration file cfg.xml
-l lang the language to use for user information
-nocs disable complex script features
-r relaxed/less strict validation (where available)
-dpi xxx target resolution in dots per inch (dpi) where xxx is a number
-s for area tree XML, down to block areas only
-v run in verbose mode (currently simply print FOP version and continue)
-o [password] PDF file will be encrypted with option owner password
-u [password] PDF file will be encrypted with option user password
-noprint PDF file will be encrypted without printing permission
-nocopy PDF file will be encrypted without copy content permission
-noedit PDF file will be encrypted without edit content permission
-noannotations PDF file will be encrypted without edit annotation permission
-nofillinforms PDF file will be encrypted without fill in interactive form fields permission
-noaccesscontent PDF file will be encrypted without extract text and graphics permission
-noassembledoc PDF file will be encrypted without assemble the document permission
-noprinthq PDF file will be encrypted without print high quality permission
-a enables accessibility features (Tagged PDF etc., default off)
-pdfprofile prof PDF file will be generated with the specified profile
(Examples for prof: PDF/A-1b or PDF/X-3:2003)
-conserve enable memory-conservation policy (trades memory-consumption for disk I/O)
(Note: currently only influences whether the area tree is serialized.)
-cache specifies a file/directory path location for the font cache file
-flush flushes the current font cache file
[INPUT]
infile xsl:fo input file (the same as the next)
(use '-' for infile to pipe input from stdin)
-fo infile xsl:fo input file
-xml infile xml input file, must be used together with -xsl
-atin infile area tree input file
-ifin infile intermediate format input file
-imagein infile image input file (piping through stdin not supported)
-xsl stylesheet xslt stylesheet
-param name value <value> to use for parameter <name> in xslt stylesheet
(repeat '-param name value' for each parameter)
-catalog use catalog resolver for input XML and XSLT files
[OUTPUT]
outfile input will be rendered as PDF into outfile
(use '-' for outfile to pipe output to stdout)
-pdf outfile input will be rendered as PDF (outfile req'd)
-pdfa1b outfile input will be rendered as PDF/A-1b compliant PDF
(outfile req'd, same as "-pdf outfile -pdfprofile PDF/A-1b")
-awt input will be displayed on screen
-rtf outfile input will be rendered as RTF (outfile req'd)
-pcl outfile input will be rendered as PCL (outfile req'd)
-ps outfile input will be rendered as PostScript (outfile req'd)
-afp outfile input will be rendered as AFP (outfile req'd)
-tiff outfile input will be rendered as TIFF (outfile req'd)
-png outfile input will be rendered as PNG (outfile req'd)
-txt outfile input will be rendered as plain text (outfile req'd)
-at [mime] out representation of area tree as XML (outfile req'd)
specify optional mime output to allow the AT to be converted
to final format later
-if [mime] out representation of document in intermediate format XML (outfile req'd)
specify optional mime output to allow the IF to be converted
to final format later
-print input file will be rendered and sent to the printer
see options with "-print help"
-out mime outfile input will be rendered using the given MIME type
(outfile req'd) Example: "-out application/pdf D:\out.pdf"
(Tip: "-out list" prints the list of supported MIME types and exits)
-svg outfile input will be rendered as an SVG slides file (outfile req'd)
Experimental feature - requires additional fop-sandbox.jar.
-foout outfile input will only be XSL transformed. The intermediate
XSL-FO file is saved and no rendering is performed.
(Only available if you use -xml and -xsl parameters)
[Examples]
fop foo.fo foo.pdf
fop -fo foo.fo -pdf foo.pdf (does the same as the previous line)
fop -xml foo.xml -xsl foo.xsl -pdf foo.pdf
fop -xml foo.xml -xsl foo.xsl -foout foo.fo
fop -xml - -xsl foo.xsl -pdf -
fop foo.fo -mif foo.mif
fop foo.fo -rtf foo.rtf
fop foo.fo -print
fop foo.fo -awt