FilterSet s are used to replace tokens in files that are copied. In general it is a good practice to use an explicit mapper together with resources that use an absolute path as their names. This is caused by the lack of any means to query or set file permissions in the current Java runtimes. Windows Note : If you copy a file to a directory where that file already exists, but with different case, the copied file takes on the case of the original.
The workaround is to delete the file in the destination directory before you copy it. Important Encoding Note : The reason that binary files when filtered get corrupted is that filtering involves reading in the file using a Reader class. This has an encoding specifying how files are encoded. For both of these encoding there are illegal byte sequences more in UTF-8 than for Cp How the Reader class deals with these illegal sequences is up to the implementation of the character decoder.
The current Sun Java implementation is to map them to legal characters. Previous Sun Java 1. Ant provides some built-in filter readers. These filter readers can also be declared using a syntax similar to the above syntax. However, they can be declared using some simpler syntax also. The only supported attribute is refid which makes this filterchain a reference to a filterchain defined elsewhere.
If specified no other attributes or nested elements are allowed. A FilterChain is formed by defining zero or more of the following nested elements. The filterreader element is the generic way to define a filter.
User defined filter elements are defined in the build file using this. Please note that built in filter readers can also be defined using this syntax. A FilterReader element must be supplied with a class name as an attribute value. The class resolved by this name must extend java. If the custom filter reader needs to be parameterized, it must implement org. See Library Dependencies. Important : This filter is different from most of the other filters.
Most of the filters operate on a sequence of characters. This filter operates on the sequence of bytes that makes up a class. However the bytes arrive to the filter as a sequence of characters. This means that one must be careful on the choice of character encoding to use. Most encodings lose information on conversion from an arbitrary sequence of bytes to characters and back again to bytes.
For this reason, since Ant 1. This loads the constants from a Java class file as Ant properties, prepending the names with a prefix. This results in the property modifiedmessage holding the value All these moments will be lost in time, like teardrops in the rain. This stores the first 15 lines, skipping the first 2 lines, of the supplied data in the property src. Filter which includes only those lines that contain the user-specified regular expression matching strings. See Regexp Type for the description of the nested element regexp and of the choice of regular expression implementation.
This filter reader replaces all strings that are sandwiched between begintoken and endtoken with user defined values. This filter reader strips away comments from the data, using Java syntax guidelines. This filter does not take in any parameters. This filter removes all those lines that begin with strings that represent comments as specified by the user. This graphic shows the dependencies:. Founded here: Ant replace token from properties file.
In the following Ant script, replace the src-root property with the root directory containing the tokenized files:. You specified that you do not want to edit your build script so this answer does not qualify but may still be useful to other readers.
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ANT replacing strings in specified files using file with properties Ask Question. Asked 8 years, 9 months ago. Active 8 years, 1 month ago. Viewed 17k times. I have a properties in file dev. Can someone give me a suggestions how to do it? Improve this question. Cezary Tomczyk. Cezary Tomczyk Cezary Tomczyk 1 1 gold badge 6 6 silver badges 13 13 bronze badges.
If you have any questions or comments, please feel free to drop me a line below. AVIO Consulting. All rights reserved. Privacy Policy Terms of Use. February 11, There are a lot of tools and scripts out there that can do a Find and Replace for me, but I chose ANT as the solution for a couple of reasons: a To be automated, so it can be made part of existing automated process b Not be environment and operating system specific, so I can use it in the future and not be tied to only using it within Unix c The Find-Replace pairs to be dynamic What I mean by dynamic find-replace pairs is that, for every execution, any combination of these three could change: a The Find variable b The Replace variable c Number of Find-Replace pairs Below are the steps to setup automated Find-Replace using ANT scripts: 1 Install ANT-Contrib ANT alone is not enough; we need ANT-Contrib.
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