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Jeff King c334b87b30 cat-file: split --batch input lines on whitespace 
If we get an input line to --batch or --batch-check that
looks like "HEAD foo bar", we will currently feed the whole
thing to get_sha1(). This means that to use --batch-check
with `rev-list --objects`, one must pre-process the input,
like:

  git rev-list --objects HEAD |
  cut -d' ' -f1 |
  git cat-file --batch-check

Besides being more typing and slightly less efficient to
invoke `cut`, the result loses information: we no longer
know which path each object was found at.

This patch teaches cat-file to split input lines at the
first whitespace. Everything to the left of the whitespace
is considered an object name, and everything to the right is
made available as the %(reset) atom. So you can now do:

  git rev-list --objects HEAD |
  git cat-file --batch-check='%(objectsize) %(rest)'

to collect object sizes at particular paths.

Even if %(rest) is not used, we always do the whitespace
split (which means you can simply eliminate the `cut`
command from the first example above).

This whitespace split is backwards compatible for any
reasonable input. Object names cannot contain spaces, so any
input with spaces would have resulted in a "missing" line.
The only input hurt is if somebody really expected input of
the form "HEAD is a fine-looking ref!" to fail; it will now
parse HEAD, and make "is a fine-looking ref!" available as
%(rest).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-12 09:18:42 -07:00
..
add.c Merge branch 'jc/add-ignore-removal' 2013-04-26 15:28:09 -07:00
annotate.c
apply.c Merge branch 'jc/apply-ws-fix-tab-in-indent' into maint 2013-04-22 11:26:56 -07:00
archive.c pkt-line: provide a LARGE_PACKET_MAX static buffer 2013-02-20 13:42:22 -08:00
bisect--helper.c i18n: bisect--helper: mark parseopt strings for translation 2012-08-20 12:23:15 -07:00
blame.c Merge branch 'nd/pretty-formats' 2013-04-23 11:22:48 -07:00
branch.c branch: colour upstream branches 2013-04-15 11:04:44 -07:00
bundle.c
cat-file.c cat-file: split --batch input lines on whitespace 2013-07-12 09:18:42 -07:00
check-attr.c Merge branch 'maint' 2012-09-17 15:59:34 -07:00
check-ignore.c dir.c: git-status --ignored: don't scan the work tree twice 2013-04-15 12:36:42 -07:00
check-ref-format.c
checkout-index.c Use imperative form in help usage to describe an action 2012-08-22 12:02:28 -07:00
checkout.c Merge branch 'nd/checkout-keep-sparse' 2013-04-22 11:11:40 -07:00
clean.c Merge branch 'as/check-ignore' 2013-01-23 21:19:10 -08:00
clone.c Merge branch 'jk/check-corrupt-objects-carefully' 2013-04-28 11:57:54 -07:00
column.c i18n: column: mark parseopt strings for translation 2012-08-20 12:23:16 -07:00
commit-tree.c commit-tree: document -S option consistently 2013-03-25 15:01:22 -07:00
commit.c pretty: save commit encoding from logmsg_reencode if the caller needs it 2013-04-18 16:28:27 -07:00
config.c Merge branch 'cn/config-missing-path' into maint 2012-11-25 18:35:46 -08:00
count-objects.c count-objects: add -H option to humanize sizes 2013-04-10 13:27:26 -07:00
credential.c
describe.c Merge branch 'jc/describe' into maint 2013-04-03 09:25:52 -07:00
diff-files.c
diff-index.c update-index/diff-index: use core.preloadindex to improve performance 2012-11-02 11:38:29 -04:00
diff-tree.c
diff.c Merge branch 'kb/preload-index-more' 2012-11-20 10:32:10 -08:00
fast-export.c fast-export: add --signed-tags=warn-strip mode 2013-04-15 09:02:25 -07:00
fetch-pack.c Merge branch 'jk/pkt-line-cleanup' 2013-04-01 08:59:37 -07:00
fetch.c Merge branch 'jk/gc-auto-after-fetch' 2013-02-01 12:40:16 -08:00
fmt-merge-msg.c Merge branch 'rt/commentchar-fmt-merge-msg' 2013-04-15 12:40:56 -07:00
for-each-ref.c Merge branch 'nd/i18n-parseopt-help' 2012-09-07 11:09:09 -07:00
fsck.c i18n: fsck: mark parseopt strings for translation 2012-08-20 12:23:17 -07:00
gc.c silence git gc --auto --quiet output 2012-09-27 17:57:26 -07:00
grep.c Sync with 1.8.1 maintenance track 2013-04-03 09:18:01 -07:00
hash-object.c i18n: hash-object: mark parseopt strings for translation 2012-08-20 12:23:17 -07:00
help.c help: mark common_guides[] as translatable 2013-04-12 09:49:00 -07:00
index-pack.c Merge branch 'nd/index-pack-threaded-fixes' into maint 2013-04-04 13:00:41 -07:00
init-db.c i18n: init-db: mark parseopt strings for translation 2012-08-20 12:23:17 -07:00
log.c Merge branch 'rr/shortlog-doc' 2013-04-26 15:28:39 -07:00
ls-files.c dir.c: replace is_path_excluded with now equivalent is_excluded API 2013-04-15 12:34:01 -07:00
ls-remote.c ls-remote: document the '--get-url' option 2012-09-07 10:58:35 -07:00
ls-tree.c pathspec: save the non-wildcard length part 2012-11-19 13:08:28 -08:00
mailinfo.c Merge branch 'jc/same-encoding' into maint 2012-12-07 14:10:56 -08:00
mailsplit.c mailsplit: sort maildir filenames more cleverly 2013-03-02 22:52:44 -08:00
merge-base.c Merge branch 'jc/merge-bases' 2012-09-11 11:36:05 -07:00
merge-file.c i18n: merge-file: mark parseopt strings for translation 2012-08-20 12:23:18 -07:00
merge-index.c Which merge_file() function do you mean? 2012-12-09 23:05:27 -08:00
merge-ours.c
merge-recursive.c
merge-tree.c merge-tree: handle directory/empty conflict correctly 2013-05-06 22:17:00 -07:00
merge.c Merge branch 'jc/merge-tag-object' into maint 2013-04-24 16:14:06 -07:00
mktag.c
mktree.c i18n: mktree: mark parseopt strings for translation 2012-08-20 12:23:18 -07:00
mv.c i18n: mv: mark parseopt strings for translation 2012-08-20 12:23:18 -07:00
name-rev.c i18n: name-rev: mark parseopt strings for translation 2012-08-20 12:23:18 -07:00
notes.c Allow custom "comment char" 2013-01-16 12:48:22 -08:00
pack-objects.c Merge branch 'jk/peel-ref' 2012-10-25 06:42:27 -04:00
pack-redundant.c Fix sizeof usage in get_permutations 2012-12-13 11:13:44 -08:00
pack-refs.c i18n: pack-refs: mark parseopt strings for translation 2012-08-20 12:23:19 -07:00
patch-id.c
prune-packed.c i18n: prune-packed: mark parseopt strings for translation 2012-08-20 12:23:19 -07:00
prune.c Merge branch 'jk/fully-peeled-packed-ref' into maint-1.8.1 2013-04-03 08:43:03 -07:00
push.c remote.c: introduce a way to have different remotes for fetch/push 2013-04-02 10:41:42 -07:00
read-tree.c i18n: read-tree: mark parseopt strings for translation 2012-08-20 12:23:19 -07:00
receive-pack.c Merge branch 'jk/receive-pack-deadlocks-with-early-failure' 2013-04-23 11:16:50 -07:00
reflog.c Merge branch 'jc/maint-reflog-expire-clean-mark-typofix' into maint 2013-03-26 12:39:51 -07:00
remote-ext.c
remote-fd.c
remote.c remote: check for superfluous arguments in 'git remote add' 2013-04-24 13:12:51 -07:00
replace.c replace: parse revision argument for -d 2012-11-13 08:34:14 -05:00
rerere.c i18n: rerere: mark parseopt strings for translation 2012-08-20 12:23:19 -07:00
reset.c reset: update documentation to require only tree-ish with paths 2013-01-16 12:50:23 -08:00
rev-list.c Move print_commit_list to libgit.a 2012-10-29 03:08:30 -04:00
rev-parse.c Merge branch 'maint-1.7.11' into maint 2012-09-12 14:08:05 -07:00
revert.c cherry-pick/revert: make usage say '<commit-ish>...' 2013-04-24 09:48:01 -07:00
rm.c rm: do not complain about d/f conflicts during deletion 2013-04-04 12:28:47 -07:00
send-pack.c teach get_remote_heads to read from a memory buffer 2013-02-24 00:17:38 -08:00
shortlog.c builtin/shortlog.c: make usage string consistent with log 2013-04-22 08:00:54 -07:00
show-branch.c show-branch: use strbuf instead of static buffer 2013-04-06 18:57:15 -07:00
show-ref.c Merge branch 'jk/peel-ref' 2012-10-25 06:42:27 -04:00
stripspace.c Allow custom "comment char" 2013-01-16 12:48:22 -08:00
symbolic-ref.c git symbolic-ref --delete $symref 2012-10-21 12:17:38 -07:00
tag.c Merge branch 'ph/tag-force-no-warn-on-creation' into maint 2013-04-03 09:24:51 -07:00
tar-tree.c
unpack-file.c
unpack-objects.c
update-index.c update-index: allow "-h" to also display options 2013-02-23 23:49:33 -08:00
update-ref.c Use imperative form in help usage to describe an action 2012-08-22 12:02:28 -07:00
update-server-info.c i18n: update-server-info: mark parseopt strings for translation 2012-08-22 10:58:29 -07:00
upload-archive.c pkt-line: provide a LARGE_PACKET_MAX static buffer 2013-02-20 13:42:22 -08:00
var.c
verify-pack.c i18n: verify-pack: mark parseopt strings for translation 2012-08-22 10:58:29 -07:00
verify-tag.c gpg_interface: allow to request status return 2013-02-14 09:30:04 -08:00
write-tree.c i18n: write-tree: mark parseopt strings for translation 2012-08-22 10:58:29 -07:00