This allows the programs to use various simplified versions of
the SHA1 names, eg just say "HEAD" for the SHA1 pointed to by
the .git/HEAD file etc.
For example, this commit has been done with
git-commit-tree $(git-write-tree) -p HEAD
instead of the traditional "$(cat .git/HEAD)" syntax.
Yes, the "parse_commit()" already checks for this condition, but
we need to check for it in rev-tree too, so that we don't start
walking the parent chain unnecessarily.
This ports rev-tree to use the parsing functions introduced in the
previous patches.
Signed-Off-By: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This also drops the old-style date parsing. We just don't care
enough, since we dropped that format pretty early.
Yes, this could do with some cleanup, and a common library file.
Some day.
This make all dates be stores as seconds since UTC epoch, with the
author's or committer's timezone as auxiliary data so that dates can be
pretty-printed in the original timezone later if anyone cares. I left
the date parsing in rev-tree.c for backward compatibility but it can be
dropped when we change to base64 :)
commit-tree now eats RFC2822 dates as AUTHOR_DATE because that's
what you're going to want to feed it.
Yes, glibc sucks and strptime is a pile of crap. We have to parse it
ourselves.
It's really a very generic thing: the notion of one sha1 revision
referring to another one. "fsck" uses it for all nodes, and "rev-tree"
only tracks commit-node relationships, but the code was already
the same - now we just make that explicit by moving it to a common
header file.
Now there is error() for "library" errors and die() for fatal "application"
errors. usage() is now used strictly only for usage errors.
Signed-off-by: Petr Baudis <pasky@ucw.cz>
Also, add "date" information to the output so that you can do something
like this:
rev-tree `cat .git/HEAD` | sort -nr | cut -d' ' -f2 | while read i; do cat-file commit $i; done
which basically becomes a "git log" (aka "git changes") where things are
sorted by time.
To do the automated commit-mailing I need to be able to answer the
question "which commits are here today but weren't yesterday"... i.e.
given two commit-ids $HEAD and $YESTERDAY I want to be able to do:
rev-tree $HEAD ^$YESTERDAY
to list those commits which are in the tree now but weren't
ancestors of yesterday's head.
Yes, I could probably do this with
rev-tree $HEAD $YESTERDAY | egrep -v ^[a-z0-9]*:3
but I prefer not to.
change. Promise.
It now always outputs all the revisions as <sha1>:<reachability>, where the
reachability is the bitmask of how that revision was reachable from the
commits in the argument list.
Trivially, if there is only one commit, the reachability will always be
(1 << 0) == 1 for all reachable revisions, and there won't be any edges
(so the "--edges" flag only makes sense with multiple commit keys).
or more commit points.
This is important both to know what the difference between two commit
points is, but also to figure out where to try to merge from.
Slight change of output format: it now lists all parents on the same line.
This allows it to work on initial commits too (which have no parents), and
also makes the output format a lot more intuitive.
tree graph.
It's quite fast when the commit-objects are cached, but since
it has to walk every single commit-object, it also allows you
to cache an old state and just add on top of that.
