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Posted to issues@commons.apache.org by "Maarten Boekhold (JIRA)" <ji...@apache.org> on 2015/10/02 12:51:27 UTC
[jira] [Created] (CONFIGURATION-613) MapConfiguration cannot handle
property set to single \t or \n
Maarten Boekhold created CONFIGURATION-613:
----------------------------------------------
Summary: MapConfiguration cannot handle property set to single \t or \n
Key: CONFIGURATION-613
URL: https://issues.apache.org/jira/browse/CONFIGURATION-613
Project: Commons Configuration
Issue Type: Bug
Reporter: Maarten Boekhold
See the following test, written in groovy (2.4.4). Open a groovyConsole, copy/paste in this code and hit ctrl-Enter to run. You need a working internet connection.
{code}
@Grab(group='commons-configuration', module='commons-configuration', version='1.9')
import org.apache.commons.configuration.MapConfiguration
import org.apache.commons.configuration.PropertiesConfiguration
// groovy dollar-slashy-string syntax, ignores backslash
// as an escape character so \t remains a literal string
// backslash + t
def propsString = $/
prefix.field1=\t
prefix.field2=a\tb
/$
// Java properties work
Properties props = new Properties()
props.load(new StringReader(propsString))
// OK
assert props.getProperty('prefix.field1') == '\t'
// OK
assert props.getProperty('prefix.field2') == 'a\tb'
// PropertiesConfiguration works
PropertiesConfiguration propscfg = new PropertiesConfiguration()
propscfg.load(new StringReader(propsString))
// OK
assert propscfg.getString('prefix.field1') == '\t'
// OK
assert propscfg.getProperty('prefix.field2') == 'a\tb'
// MapConfiguration does not work
MapConfiguration mapcfg = new MapConfiguration(props)
// OK
assert mapcfg.getProperty('prefix.field2') == 'a\tb'
// FAIL
// MapConfiguration loses the single tab character
assert mapcfg.getString('prefix.field1') == '\t'
{code}
Output is:
{noformat}
Exception thrown
Assertion failed:
assert mapcfg.getString('prefix.field1') == '\t'
| | |
| "" false
org.apache.commons.configuration.MapConfiguration@1cd4064c
at ConsoleScript13.run(ConsoleScript13:35)
{noformat}
As you can see, once we've 'converted' the java.util.Properties instance to a MapConfiguration, the single \t character is lost. *Embedded* tab characters however are retained!
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