It coalesces two or more consecutive applied patches, with no need to
touch index/worktree, and no possibiliy of conflicts.
Future improvements could relax the "consecutive" and "applied"
restrictions, by building a new chain of commits just like "stg push"
will do once it's been converted to the new infrastructure.
Signed-off-by: Karl Hasselström <kha@xxxxxxxxxxx>
---
contrib/stgit-completion.bash | 2 +
stgit/commands/coalesce.py | 84 +++++++++++++++++++++++++++++++++++++++++
stgit/main.py | 2 +
stgit/utils.py | 11 +++++
t/t2600-coalesce.sh | 31 +++++++++++++++
5 files changed, 130 insertions(+), 0 deletions(-)
create mode 100644 stgit/commands/coalesce.py
create mode 100755 t/t2600-coalesce.sh
diff --git a/contrib/stgit-completion.bash b/contrib/stgit-completion.bash
index b3b23d4..b02eb64 100644
--- a/contrib/stgit-completion.bash
+++ b/contrib/stgit-completion.bash
@@ -18,6 +18,7 @@ _stg_commands="
diff
clean
clone
+ coalesce
commit
cp
edit
@@ -238,6 +239,7 @@ _stg ()
# repository commands
id) _stg_patches $command _all_patches ;;
# stack commands
+ coalesce) _stg_patches $command _applied_patches ;;
float) _stg_patches $command _all_patches ;;
goto) _stg_patches $command _all_other_patches ;;
hide) _stg_patches $command _unapplied_patches ;;
diff --git a/stgit/commands/coalesce.py b/stgit/commands/coalesce.py
new file mode 100644
index 0000000..c4c1cf8
--- /dev/null
+++ b/stgit/commands/coalesce.py
@@ -0,0 +1,84 @@
+# -*- coding: utf-8 -*-
+
+__copyright__ = """
+Copyright (C) 2007, Karl Hasselström <kha@xxxxxxxxxxx>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License version 2 as
+published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+"""
+
+from optparse import make_option
+from stgit.out import *
+from stgit import utils
+from stgit.commands import common
+from stgit.lib import git, transaction
+
+help = 'coalesce two or more patches into one'
+usage = """%prog [options] <patches>
+
+Coalesce two or more patches, creating one big patch that contains all
+their changes. The patches must all be applied, and must be
+consecutive."""
+
+directory = common.DirectoryHasRepositoryLib()
+options = [make_option('-n', '--name', help = 'name of coalesced patch'),
+ make_option('-m', '--message',
+ help = 'commit message of coalesced patch')]
+
+def _coalesce(stack, name, msg, patches):
+ applied = stack.patchorder.applied
+
+ # Make sure the patches are consecutive.
+ applied_ix = dict((applied[i], i) for i in xrange(len(applied)))
+ ixes = list(sorted(applied_ix[p] for p in patches))
+ i0, i1 = ixes[0], ixes[-1]
+ if i1 - i0 + 1 != len(patches):
+ raise common.CmdException('The patches must be consecutive')
+
+ # Make a commit for the coalesced patch.
+ def bad_name(pn):
+ return pn not in patches and stack.patches.exists(pn)
+ if name and bad_name(name):
+ raise common.CmdException('Patch name "%s" already taken')
+ ps = [stack.patches.get(pn) for pn in applied[i0:i1+1]]
+ if msg == None:
+ msg = '\n\n'.join('%s\n\n%s' % (p.name.ljust(70, '-'),
+ p.commit.data.message)
+ for p in ps)
+ msg = utils.edit_string(msg, '.stgit-coalesce.txt').strip()
+ if not name:
+ name = utils.make_patch_name(msg, bad_name)
+ cd = git.Commitdata(tree = ps[-1].commit.data.tree,
+ parents = ps[0].commit.data.parents, message = msg)
+
+ # Rewrite refs.
+ trans = transaction.StackTransaction(stack, 'stg coalesce')
+ for pn in applied[i0:i1+1]:
+ trans.patches[pn] = None
+ parent = trans.patches[name] = stack.repository.commit(cd)
+ trans.applied = applied[:i0]
+ trans.applied.append(name)
+ for pn in applied[i1+1:]:
+ p = stack.patches.get(pn)
+ parent = trans.patches[pn] = stack.repository.commit(
+ p.commit.data.set_parent(parent))
+ trans.applied.append(pn)
+ trans.run()
+
+def func(parser, options, args):
+ stack = directory.repository.current_stack
+ applied = set(stack.patchorder.applied)
+ patches = set(common.parse_patches(args, list(stack.patchorder.applied)))
+ if len(patches) < 2:
+ raise common.CmdException('Need at least two patches')
+ _coalesce(stack, options.name, options.message, patches)
diff --git a/stgit/main.py b/stgit/main.py
index deaac91..384803b 100644
--- a/stgit/main.py
+++ b/stgit/main.py
@@ -64,6 +64,7 @@ commands = Commands({
'diff': 'diff',
'clean': 'clean',
'clone': 'clone',
+ 'coalesce': 'coalesce',
'commit': 'commit',
'edit': 'edit',
'export': 'export',
@@ -108,6 +109,7 @@ stackcommands = (
'applied',
'branch',
'clean',
+ 'coalesce',
'commit',
'float',
'goto',
diff --git a/stgit/utils.py b/stgit/utils.py
index b3f6232..688276c 100644
--- a/stgit/utils.py
+++ b/stgit/utils.py
@@ -189,6 +189,17 @@ def call_editor(filename):
raise EditorException, 'editor failed, exit code: %d' % err
out.done()
+def edit_string(s, filename):
+ f = file(filename, 'w')
+ f.write(s)
+ f.close()
+ call_editor(filename)
+ f = file(filename)
+ s = f.read()
+ f.close()
+ os.remove(filename)
+ return s
+
def patch_name_from_msg(msg):
"""Return a string to be used as a patch name. This is generated
from the top line of the string passed as argument."""
diff --git a/t/t2600-coalesce.sh b/t/t2600-coalesce.sh
new file mode 100755
index 0000000..f13a309
--- /dev/null
+++ b/t/t2600-coalesce.sh
@@ -0,0 +1,31 @@
+#!/bin/sh
+
+test_description='Run "stg coalesce"'
+
+. ./test-lib.sh
+
+test_expect_success 'Initialize StGit stack' '
+ stg init &&
+ for i in 0 1 2 3; do
+ stg new p$i -m "foo $i" &&
+ echo "foo $i" >> foo.txt &&
+ git add foo.txt &&
+ stg refresh
+ done
+'
+
+test_expect_success 'Coalesce some patches' '
+ [ "$(echo $(stg applied))" = "p0 p1 p2 p3" ] &&
+ [ "$(echo $(stg unapplied))" = "" ] &&
+ stg coalesce --name=q0 --message="wee woo" p1 p2 &&
+ [ "$(echo $(stg applied))" = "p0 q0 p3" ] &&
+ [ "$(echo $(stg unapplied))" = "" ]
+'
+
+test_expect_success 'Coalesce at stack top' '
+ stg coalesce --name=q1 --message="wee woo wham" q0 p3 &&
+ [ "$(echo $(stg applied))" = "p0 q1" ] &&
+ [ "$(echo $(stg unapplied))" = "" ]
+'
+
+test_done
-
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