convert/gnuarch: parse continuation-of revisions in gnuarch source
In GNU Arch, continuation-of was often used for:
- tagging revisions
- continue working on a project in a new archive, because arch
was scaling poorly in revision numbers (cat-logs were slow
to be parsed and scanned through)
- very similar to the previous point, fork his own branch of
a project.
Parsing this header information will allow to 'follow' new history
because it often hints at older/forked/personal revision trees.
This patch however just implements the parsing of the
continuation-of header. A followup patch will implement the proper
use of this new information.
adding a
changeset: 0:8580ff50825a
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: a
% -f, directory
abort: cannot follow nonexistent file: "dir"
% -f, but no args
changeset: 4:b30c444c7c84
tag: tip
user: test
date: Thu Jan 01 00:00:05 1970 +0000
summary: e
changeset: 3:16b60bf3f99a
user: test
date: Thu Jan 01 00:00:04 1970 +0000
summary: d
changeset: 2:21fba396af4c
user: test
date: Thu Jan 01 00:00:03 1970 +0000
summary: c
changeset: 1:c0296dabce9b
user: test
date: Thu Jan 01 00:00:02 1970 +0000
summary: b
changeset: 0:8580ff50825a
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: a
% one rename
changeset: 0:8580ff50825a
user: test
date: Thu Jan 01 00:00:01 1970 +0000
files: a
description:
a
% many renames
changeset: 4:b30c444c7c84
tag: tip
user: test
date: Thu Jan 01 00:00:05 1970 +0000
files: dir/b e
description:
e
changeset: 2:21fba396af4c
user: test
date: Thu Jan 01 00:00:03 1970 +0000
files: b dir/b
description:
c
changeset: 1:c0296dabce9b
user: test
date: Thu Jan 01 00:00:02 1970 +0000
files: b
description:
b
changeset: 0:8580ff50825a
user: test
date: Thu Jan 01 00:00:01 1970 +0000
files: a
description:
a
% log copies
4 e (dir/b)
3 b (a)
2 dir/b (b)
1 b (a)
0
% log copies, non-linear manifest
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
adding foo
created new head
5 e (dir/b)
% log copies, execute bit set
6
% log -p d
changeset: 3:16b60bf3f99a
user: test
date: Thu Jan 01 00:00:04 1970 +0000
files: a b d
description:
d
diff -r 21fba396af4c -r 16b60bf3f99a d
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/d Thu Jan 01 00:00:04 1970 +0000
@@ -0,0 +1,1 @@
+a
adding base
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
adding b1
created new head
% log -f
changeset: 3:e62f78d544b4
tag: tip
parent: 1:3d5bf5654eda
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: b1
changeset: 1:3d5bf5654eda
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: r1
changeset: 0:67e992f2c4f3
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: base
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
adding b2
created new head
% log -f -r 1:tip
changeset: 1:3d5bf5654eda
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: r1
changeset: 2:60c670bf5b30
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: r2
changeset: 3:e62f78d544b4
parent: 1:3d5bf5654eda
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: b1
2 files updated, 0 files merged, 1 files removed, 0 files unresolved
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
% log -r . with two parents
changeset: 3:e62f78d544b4
parent: 1:3d5bf5654eda
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: b1
% log -r . with one parent
changeset: 5:302e9dd6890d
tag: tip
parent: 3:e62f78d544b4
parent: 4:ddb82e70d1a1
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: m12
% log --follow-first
changeset: 6:2404bbcab562
tag: tip
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: b1.1
changeset: 5:302e9dd6890d
parent: 3:e62f78d544b4
parent: 4:ddb82e70d1a1
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: m12
changeset: 3:e62f78d544b4
parent: 1:3d5bf5654eda
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: b1
changeset: 1:3d5bf5654eda
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: r1
changeset: 0:67e992f2c4f3
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: base
% log -P 2
changeset: 6:2404bbcab562
tag: tip
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: b1.1
changeset: 5:302e9dd6890d
parent: 3:e62f78d544b4
parent: 4:ddb82e70d1a1
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: m12
changeset: 4:ddb82e70d1a1
parent: 0:67e992f2c4f3
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: b2
changeset: 3:e62f78d544b4
parent: 1:3d5bf5654eda
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: b1
% log -r ""
abort: 00changelog.i@: ambiguous identifier!
% log -r <some unknown node id>
abort: unknown revision '1000000000000000000000000000000000000000'!