CODEWITHSUNDEEP
javagroovyreplacetype-conversionbackslash
Makusensu
Makusensu

Reputation: 279

Groovy: Convert string with simple \

I'm trying to convert a string I dynamically get, to double the \ or convert them as / (both are ok for me).

It is formated as:

d:\code\main

I can't edit it at the source.

In my tests, I tried using replace or replaceAll function, with \ to 5 \\\, but I always run into this error:

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed: 
script15181726196231935876660.groovy: 4: unexpected char: '\' @ line 4, column 17. 
String main = "d:\code\main\blabla\blabla"
^ 

1 error 

    at org.codehaus.groovy.control.ErrorCollector.failIfErrors(ErrorCollector.java:302) 
    at org.codehaus.groovy.control.ErrorCollector.addFatalError(ErrorCollector.java:149) 
    at org.codehaus.groovy.control.ErrorCollector.addError(ErrorCollector.java:119) 
    at org.codehaus.groovy.control.ErrorCollector.addError(ErrorCollector.java:131) 
    at org.codehaus.groovy.control.SourceUnit.addError(SourceUnit.java:359) 
    at org.codehaus.groovy.antlr.AntlrParserPlugin.transformCSTIntoAST(AntlrParserPlugin.java:137) 
    at org.codehaus.groovy.antlr.AntlrParserPlugin.parseCST(AntlrParserPlugin.java:108) 
    at org.codehaus.groovy.control.SourceUnit.parse(SourceUnit.java:236) ...

Is there a way convert or rebuild this variable without falling in this Java error ?

Thanks

Upvotes: 1

Views: 3622

Answers (2)

jihor
jihor

Reputation: 2599

Dollar slashy string and Slashy string both allow backslashes.

def s1 = /d:\code/
def s2 = $/d:\code/$
s1.equals(s2) // true

The slashy string has exactly one case where the backslash is a special symbol - if it comes before the forward slash:

def s3 = /This - \/ - is the forward slash/ 
// This - / - is the forward slash

Documentation can be found here.

Upvotes: 0

lmarqs
lmarqs

Reputation: 1471

The \ charactere is escape char https://en.wikipedia.org/wiki/Escape_character. So, to use it as a literal value use \\ instead.

String main = "d:\\code\\main\\blabla\\blabla"

Upvotes: 1

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