Newbie question: equiv of: cvs co -p <filename> ?

How can we cat the latest committed state of a file to stdout?

I hacked this:

	#!/bin/bash
	ID=`git-ls-files -s | grep $1 | cut -d ' ' -f 2`
	TMP=`git-unpack-file $ID`
	cat $TMP
	rm $TMP

but its really ugly! It must be easier than this?

John

No. "git-ls-files" shows the latest _index_ state, not the latest committed state.

Use "git-ls-tree HEAD pathname" to get the latest committed state for the pathname, and then pick out the SHA1 from there, use

git-cat-file blob <sha1>

to cat the result.

Of course, this will work with any revision, not just HEAD. So you could do something like

	git-ls-tree $(git-rev-parse --default HEAD "$@") |
		while read mode type sha name
		do
			case "$type" in
			blob)
				git-cat-file blob "$sha"
				;;
			tree)
				git-ls-tree "$sha"
				;;
			*)
				exit 1
		done

(totally untested)

Linus

Thanks Linus, also Rene and Johannes.

I applied a bit of polish and testing and now I'm ready to offer my first contribution to cogito.

cg-cat [-r rev] FILE

I hope that this is useful to others.

---

@@ -14,11 +14,11 @@ INSTALL?=install
 
 SCRIPT=	commit-id tree-id parent-id cg-add cg-admin-lsobj cg-admin-uncommit \
 	cg-branch-add cg-branch-ls cg-reset cg-clone cg-commit cg-diff \
 	cg-export cg-help cg-init cg-log cg-merge cg-mkpatch cg-patch \
 	cg-pull cg-restore cg-rm cg-seek cg-status cg-tag cg-tag-ls cg-update \
-	cg cg-admin-ls cg-push cg-branch-chg
+	cg cg-admin-ls cg-push cg-branch-chg cg-cat
 
 LIB_SCRIPT=cg-Xlib cg-Xmergefile cg-Xnormid
 
 GEN_SCRIPT= cg-version
 

Dear diary, on Wed, Aug 10, 2005 at 04:38:08PM CEST, I got a letter where John Ellson <[email protected]> told me that...

Thanks, cleaned up and applied. I only renamed it to cg-admin-cat since I think it's indeed a bit obscure. Also, note the remarkable similarity:

cg-admin-cat [-r TREE_ID] FILE...
cg-admin-ls [-t TREE_ID] [PATH]

What about joining those to cg-admin-dig or something? (Catting a directory or ls'ing file contents just feels wrong, although the first one would make some sense to people not acquainted with UNIX.)

				Petr "Pasky" Baudis
Stuff: http://pasky.or.cz/
If you want the holes in your knowledge showing up try teaching
someone.  -- Alan Cox

I don't know if these need to be merged, *but* please at least change one of the flag names so that the whole mess is slightly more consistent.

Matthias Urlichs   |   {M:U} IT Design @ m-u-it.de   |  [email protected]
Disclaimer: The quote was selected randomly. Really. | http://smurf.noris.de
 - -
The thought of 2000 thousand people munching celery at the same time
horrifies me.
					-- George Bernard Shaw

Hi,

and now:

git-cat-file blob $ID

Voila,
Dscho

Still not pretty. How about this?

	#!/bin/sh
	git-ls-tree HEAD "$@" | while read mode type hash filename; do
		[ "$type" = "blob" ] && git-cat-file blob "$hash"
	done

Rene