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== Developer Basics == == Developer basics ==
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CategoryInternals CategoryDeveloper

Developer basics

This page has some basic code examples to get you started hacking on hg. See also MercurialApi.

Looking at changesets

Here's some simple code to look at a changeset: 

   1 from mercurial import ui, hg
   2 
   3 u = ui.ui()  # get a ui object
   4 r = hg.repository(u, ".") # get a repo object for the current directory
   5 c = r.changectx("tip") # get a context object for the "tip" revision
   6 
   7 # show some information about the changeset
   8 print c # represented as the changeset hash
   9 print c.user()
  10 print c.description()
  11 print
  12 
  13 # let's take a peek at the files
  14 files = c.files()
  15 for f in files:
  16  fc = c[f]
  17  print " ", f, len(fc.data())

And the output looks like this: 

$ python lc.py
534ec2689c94
Matt Mackall <mpm@selenic.com>
copy: more cleanups

- remove copyfile src variable
- add some comments
- simplify actual copy logic
- simplify 'undelete' logic
- make the error counting actually work

  mercurial/cmdutil.py 41944

CategoryDeveloper

DeveloperBasics (last edited 2010-10-15 21:57:56 by abuehl)