I’m quite a newbie in Ant, but I thought it would be straightforward to do a regular expression replacement in a string contained in a property; in my case, I had to replace Windows backslashes with Unix slashes… apparently, unless you use the propertyregex task from Ant Contrib, that is not supported out-of-the-box: you have to pass through a file!
This stackoverflow post shows a possible solution, and starting from that, I created a macrodef to make it easier
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<!-- = = = = = = = = = = = = = = = = = macrodef: replace_win_slashes = = = = = = = = = = = = = = = = = --> <macrodef name="replace_win_slashes"> <attribute name="property.to.process" default="default" /> <attribute name="output.property" default="default" /> <sequential> <echo message="@{property.to.process}" file="some.tmp.file" /> <loadfile property="@{output.property}" srcFile="some.tmp.file"> <filterchain> <tokenfilter> <replaceregex pattern="\\" replace="/" flags="g" /> </tokenfilter> </filterchain> </loadfile> <delete file="some.tmp.file" /> </sequential> </macrodef> |
This macro takes the property value to process (property.to.process) and the property name where to store the result; it outputs the input value to a temporary file, reads it back with a regular expression replacement (which is supported for files) and store it in the specified property (the temporary file is then deleted).
Here’s an example of use
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<project name="replace win slashes" > <property name="my.prop1" value="file:C:\Users\bettini/my/path1" /> <!-- = = = = = = = = = = = = = = = = = macrodef: replace_win_slashes = = = = = = = = = = = = = = = = = --> <macrodef name="replace_win_slashes"> <attribute name="property.to.process" default="default" /> <attribute name="output.property" default="default" /> <sequential> <echo message="@{property.to.process}" file="some.tmp.file" /> <loadfile property="@{output.property}" srcFile="some.tmp.file"> <filterchain> <tokenfilter> <replaceregex pattern="\\" replace="/" flags="g" /> </tokenfilter> </filterchain> </loadfile> <delete file="some.tmp.file" /> </sequential> </macrodef> <replace_win_slashes property.to.process="${my.prop1}" output.property="my-prop-1" /> <echo message="my-prop-1 = ${my-prop-1}" /> </project> |
Hi,
You can use a filterchain to do this:
You can also use regex replace in a filterchain:
https://ant.apache.org/manual/Types/filterchain.html#replaceregex
See the code here:
http://pastebin.com/vNL027Z1
Thanks! I did not know about that and I searched a lot before… 🙂
Actually the solution you propose with replacestring does not work for me: I must use replaceregex: http://pastebin.com/r9Zh7NU5
Hi Lorenzo,
You can try:
Philippe.
Philippe, try what? Probably special chars have been removed when you posted your comment?