I recently encountered some interesting behavior while trying to use the
escape character syntax.
I'm trying to build config files from a template file containing tokens
(i.e. ${server.name}) to be replaced at build time using a copy task
combined with the filterchain expandproperties task. Specifically I'm
trying to build a config file in which my desired output includes the
string ${something}. To do so, I am using the syntax ${'${something}'}.
This syntax worked until my config file went beyond a certain number of
characters in length. In my case it appears to be 2032. As soon as the
file went beyond this number of chars, the expandproperties task tries
to evaluate the token inside of the escape character. As you can see
below if changes the ${'${property2000}'} token into the property2000
value 'ThisProperty2000_Expanded.'
Does anyone recognize this behavior? And if so, could you please
explain, and offer any known workarounds? Thanks!
Example-->
*** BUILDFILE
**********************************************************************
<?xml version="1.0" encoding="utf-8" ?>
<project name="magnum" default="go">
<property name="property1" value="ThisProperty1_Expanded"/>
<property name="property2000"
value="ThisProperty2000_Expanded"/>
<target name="go">
<copy
file="E:\Development\Demos\Demo.Nant\expandpropertiesTestFile.txt.templa
te"
tofile="E:\Development\Demos\Demo.Nant\expandpropertiesTestFile.txt"
overwrite="true"
>
<filterchain>
<expandproperties />
</filterchain>
</copy>
</target>
</project>
*** TEMPLATE WITH 2032 CHARACTERS
************************************************
This is a test file template. I'm trying to prove after 2032 chars that
Nant has some issues!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
Trying to expand Property1: ${property1}
Trying to use escape character: ${'${property1}'}
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
1604
Trying to expand Property2000: ${property2000}
Trying to use escape character: ${'${property2000}'}
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 char
Trying to expand Property2000: ${property2000}
Trying to use escape character: ${'${property2000}'}
*** RESULT
**********************************************************************
This is a test file template. I'm trying to prove after 2032 chars that
Nant has some issues!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
Trying to expand Property1: ThisProperty1_Expanded
Trying to use escape character: ${property1}
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
1604
Trying to expand Property2000: ThisProperty2000_Expanded
Trying to use escape character: ${property2000}
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 char
Trying to expand Property2000: ThisProperty2000_Expanded
Trying to use escape character: ${property2000}
*** TEMPLATE WITH 2033 CHARACTERS
************************************************
This is a test file template. I'm trying to prove after 2032 chars that
Nant has some issues!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
Trying to expand Property1: ${property1}
Trying to use escape character: ${'${property1}'}
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
1604
Trying to expand Property2000: ${property2000}
Trying to use escape character: ${'${property2000}'}
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars
Trying to expand Property2000: ${property2000}
Trying to use escape character: ${'${property2000}'}
*** RESULT
**********************************************************************
This is a test file template. I'm trying to prove after 2032 chars that
Nant has some issues!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
Trying to expand Property1: ThisProperty1_Expanded
Trying to use escape character: ThisProperty1_Expanded
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
1604
Trying to expand Property2000: ThisProperty2000_Expanded
Trying to use escape character: ThisProperty2000_Expanded
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars in this line of words. Having 100 chars will allow
me to multiple chars easily!
There are 100 chars
Trying to expand Property2000: ThisProperty2000_Expanded
Trying to use escape character: ThisProperty2000_Expanded
Thanks for the help!
Matt Mergen
Programmer Analyst
FHLBank Topeka
785.438.6250
FHLBank Topeka makes a difference by helping our members build their
communities.
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