###OpenBSD commitid generator

A work in progress to assign commitid identifiers to all files in OpenBSD's CVS trees for commits before commitid functionality was enabled.

####Usage

Paths used here are hard-coded in openbsd-commitid.rb.

1. Download pristine sources to /var/cvs:

   `$ cvsync`
   

2. Duplicate just-downloaded tree to /var/cvs-commitid, since these files will get modified:

   `$ rsync -a --delete /var/cvs/. /var/cvs-commitid/.`
   

3. Run this script:

   `$ ruby openbsd-commitid.rb`
   

NOTE: This script relies on recently added changes to OpenBSD's rlog and cvs tools:

• cvs admin -C to set a revision's commitid
• rlog -E and rlog -S to control the revision separators in rlog output, since the default line of dashes appears in old commit messages

####Details

This script does the following steps for each of the src, ports, www, and xenocara trees.

1. Recurse a directory of RCS ,v files (/var/cvs-commitid/), create a "files" record for each one.

2. Run rlog on each RCS file, parse the output and create a "revisions" record with each revision's author, date, version, commitid (if present), and log message. Update the "files" record to note the first non-dead version in the file.

3. Fetch all revisions not already matched to a changeset, ordered by author then date, and bundle them into changesets. Create a new "changesets" record for each, then update each of those "revisions" records with the new changeset id. By sorting all commits by author and date, it's possible to accurately find all files touched by an author in the same commit window.

4. For each newly created "changesets" record, update them with a definitive timestamp, log message, author, and commitid (creating a new one if needed) based on all of the "revisions" with that changeset id.

5. Do a cvs checkout from /var/cvs-commitid/ to a temporary directory created in /var/cvs-tmp/, checking out revision 1.1 of each file. For each file that has a first-non-dead version number that is not 1.1, do another cvs checkout of that version of the file so that every file in the tree is now present in the working checked-out tree. This is required to operate on deleted files (moved to the Attic) and files where version 1.1 does not exist, such as those created on branches.

6. For each "revisions" record of each "files" record that doesn't have a recorded commitid (meaning this script generated one while bundling it into a "changesets" record), run cvs admin -C to assign the commitid to that revision in the RCS ,v file in /var/cvs-commitid/.

7. rm -rf the temporary checked-out directory in /var/cvs-tmp/ since the changes are now all present in the /var/cvs-commitid/ tree.