How would you write a build.xml file, using neither custom code nor external dependencies (such as a shell script), that:

  • Generates a build number of the form major.minor.revision (e.g., 01.02.34).
  • Auto-increments the revision on each compile of the source code.
  • Auto-increments the minor version on each execution of a dist(ribution) task.

Additionally:

  • Provides an option to increment the major number.
  • Provides an option to increment the minor number.
  • Whenever the major number is incremented, the minor and revision numbers are set to 0.
  • Whenever the minor number is incremented, the revision number is set to 0.

Bonus:

  • Creates a variable based on the git revision number (like a subversion revision number).

Clarification:

  • Automatic checkout (or commit) is not required.
  • Integration with Subversion is not desired.

Thank you for any examples. Here are some related sites that describe how to perform similar tasks:

java ant build-process versioning
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