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 Wed, 01 Oct 2003 18:18:44 PDT
Date: Wed, 1 Oct 2003 18:18:44 -0700 (PDT)
From: Dan Earfull <ir4u44@yahoo.com>
Subject: Re: Adding vizant tag to ant tag set?
To: Ant Users List <user@ant.apache.org>
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Hi,

I followed Jake's advice.
He got me moving in the right direction.

Here is what I saw.

I edited and then I inspected my build.xml file:

[root@localhost ant]# cat build.xml
<?xml version="1.0"?>

<!-- A simple build.xml file -->
<project name="build.xml 01" default="vizant" basedir=".">

  <target name="vizant">
    <taskdef name="vizant" classname="net.sourceforge.vizant.Vizant" classpath="/CD/vizant.jar"/>
    <vizant antfile="build.xml" outfile="build.dot"/>
    <exec executable="dot" failifexecutionfails="false" resultproperty="graphvizSuccess!">
      <arg line="-Tpng build.dot -o build.png"/>
    </exec>
    <fail unless="graphvizSuccess!">
         You probably need to install GraphViz which is a native program,
         not a Java library &gt;&gt;&gt;
         http://www.research.att.com/sw/tools/graphviz/
     </fail>
  </target>

</project>
[root@localhost ant]#





Next, I ran ant:

[root@localhost ant]# ant
Buildfile: build.xml

vizant:
     [exec] Error: Could not find/open font : Times in
/usr/X11R6/lib/X11/fonts/TrueType:/usr/X11R6/lib/X11/fonts/truetype:/usr/X11R6/lib/X11/fonts/TTF:/usr/share/fonts/TrueType:/usr/share/fonts/truetype:/usr/openwin/lib/X11/fonts/TrueType:/usr/X11R6/lib/X11/fonts/Type1:/usr/common/share/fonts/ttf

BUILD SUCCESSFUL
Total time: 1 second
[root@localhost ant]#


At first, I was not sure how to troubleshoot this although it was
obvious that I got the vizant tag recognized by ant.




I inspected the directory for build.dot:

[root@localhost ant]# ls -l build.dot
-rw-r--r--    1 root     root           59 Oct  1 17:25 build.dot
[root@localhost ant]# cat build.dot
digraph "G" {
    graph ["rankdir"="LR",];
    "vizant";
}
[root@localhost ant]#

Good; ant created build.dot for me.




I tried the "dot" command line which ant was trying:

[root@localhost ant]# dot -Tpng build.dot -o build.png
Error: Could not find/open font : Times in
/usr/X11R6/lib/X11/fonts/TrueType:/usr/X11R6/lib/X11/fonts/truetype:/usr/X11R6/lib/X11/fonts/TTF:/usr/share/fonts/TrueType:/usr/share/fonts/truetype:/usr/openwin/lib/X11/fonts/TrueType:/usr/X11R6/lib/X11/fonts/Type1:/usr/common/share/fonts/ttf
[root@localhost ant]#




I studied my X-windows setup:

[root@localhost ant]# which xterm
/usr/X11R6/bin/xterm
[root@localhost ant]# cd /usr/X11R6
/usr/X11R6
[root@localhost X11R6]# find . -name '*Times*' -print
./man/man3/XtLastTimestampProcessed.3x.gz
[root@localhost X11R6]#

I saw no evidence of a "Times" font which might be tucked away in a corner somewhere.




I studied the dot executable.

[root@localhost X11R6]# dot -h
dot: option -h unrecognized

Usage: dot [-Vv?] [-(GNE)name=val] [-(Tlso)<val>] <dot files>
 -V          - Print version and exit
 -v          - Enable verbose mode
 -Gname=val  - Set graph attribute 'name' to 'val'
 -Nname=val  - Set node attribute 'name' to 'val'
 -Ename=val  - Set edge attribute 'name' to 'val'
 -Tv         - Set output format to 'v'
 -lv         - Use external library 'v'
 -ofile      - Write output to 'file'
 -q[l]       - Set level of message suppression (=1)
 -s[v]       - Scale input by 'v' (=72)
 -y          - Invert y coordinate in output
[root@localhost X11R6]#

I found some online documentation on "dot":
http://www.graphviz.org/cgi-bin/man?dot




I enhanced my "dot" command line:

[root@localhost ant]#
[root@localhost ant]# dot -Nfontname="cour"  -Tpng build.dot -o build.png
[root@localhost ant]#

Oh boy; no error message.

I looked at build.png with my mozilla browser; it showed me a pretty
ellipse containing the string "vizant".




I then went back and enhanced my build.xml file and then ran ant.

[root@localhost ant]# cat build.xml
<?xml version="1.0"?>

<!-- A simple build.xml file -->
<project name="bikle build.xml 01" default="vizant" basedir=".">

  <target name="vizant">
    <taskdef name="vizant" classname="net.sourceforge.vizant.Vizant" classpath="/CD/vizant.jar"/>
    <vizant antfile="build.xml" outfile="build.dot"/>
    <exec executable="dot" failifexecutionfails="false" resultproperty="graphvizSuccess!">
      <arg line="-Nfontname=cour -Tpng build.dot -o build.png"/>
    </exec>
    <fail unless="graphvizSuccess!">
         You probably need to install GraphViz which is a native program,
         not a Java library &gt;&gt;&gt;
         http://www.research.att.com/sw/tools/graphviz/
     </fail>
  </target>

</project>
[root@localhost ant]# ant
Buildfile: build.xml

vizant:

BUILD SUCCESSFUL
Total time: 1 second
[root@localhost ant]# ls -l build.dot build.png build.xml
-rw-r--r--    1 root     root           59 Oct  1 18:11 build.dot
-rw-r--r--    1 root     root          505 Oct  1 18:11 build.png
-rw-r--r--    1 root     root          713 Oct  1 18:10 build.xml
[root@localhost ant]#

I looked at build.png with my mozilla browser; it showed me a pretty
ellipse containing the string "vizant".

-Dan


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