git-repo/subcmds/forall.py
Shawn O. Pearce db45da1208 Add -p to repo forall to improve output formatting
When trying to read log output from many projects at once it can
be difficult to make sense of which messages came from where.

For many professional developers it is common to want to view the
last week's worth of your work, so you can write a weekly summary
of your activity for your status report.

This is easier with the new -p option:

  repo forall -pc git log --reverse --since=1.week.ago --author=sop

produces a report of all commits written by me in the last week,
formatted in a paged output display, with headers inserted in
front of each project's output.

Where this can be even more useful is with git log's pickaxe,
e.g. now we can use:

  repo forall -pc git log -Sbar v1.0..v1.1

to locate all additions or removals of the symbol 'bar' since v1.0,
up to and including v1.1.  Before displaying the matching commits in
a project, a project header is shown, giving the user some context
information for the matching results.

Signed-off-by: Shawn O. Pearce <sop@google.com>
2009-04-18 13:49:13 -07:00

249 lines
7.1 KiB
Python

#
# Copyright (C) 2008 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import fcntl
import re
import os
import select
import sys
import subprocess
from color import Coloring
from command import Command, MirrorSafeCommand
_CAN_COLOR = [
'branch',
'diff',
'grep',
'log',
]
class ForallColoring(Coloring):
def __init__(self, config):
Coloring.__init__(self, config, 'forall')
self.project = self.printer('project', attr='bold')
class Forall(Command, MirrorSafeCommand):
common = False
helpSummary = "Run a shell command in each project"
helpUsage = """
%prog [<project>...] -c <command> [<arg>...]
"""
helpDescription = """
Executes the same shell command in each project.
Output Formatting
-----------------
The -p option causes '%prog' to bind pipes to the command's stdin,
stdout and stderr streams, and pipe all output into a continuous
stream that is displayed in a single pager session. Project headings
are inserted before the output of each command is displayed. If the
command produces no output in a project, no heading is displayed.
The formatting convention used by -p is very suitable for some
types of searching, e.g. `repo forall -p -c git log -SFoo` will
print all commits that add or remove references to Foo.
The -v option causes '%prog' to display stderr messages if a
command produces output only on stderr. Normally the -p option
causes command output to be suppressed until the command produces
at least one byte of output on stdout.
Environment
-----------
pwd is the project's working directory. If the current client is
a mirror client, then pwd is the Git repository.
REPO_PROJECT is set to the unique name of the project.
REPO_PATH is the path relative the the root of the client.
REPO_REMOTE is the name of the remote system from the manifest.
REPO_LREV is the name of the revision from the manifest, translated
to a local tracking branch. If you need to pass the manifest
revision to a locally executed git command, use REPO_LREV.
REPO_RREV is the name of the revision from the manifest, exactly
as written in the manifest.
shell positional arguments ($1, $2, .., $#) are set to any arguments
following <command>.
Unless -p is used, stdin, stdout, stderr are inherited from the
terminal and are not redirected.
"""
def _Options(self, p):
def cmd(option, opt_str, value, parser):
setattr(parser.values, option.dest, list(parser.rargs))
while parser.rargs:
del parser.rargs[0]
p.add_option('-c', '--command',
help='Command (and arguments) to execute',
dest='command',
action='callback',
callback=cmd)
g = p.add_option_group('Output')
g.add_option('-p',
dest='project_header', action='store_true',
help='Show project headers before output')
g.add_option('-v', '--verbose',
dest='verbose', action='store_true',
help='Show command error messages')
def WantPager(self, opt):
return opt.project_header
def Execute(self, opt, args):
if not opt.command:
self.Usage()
cmd = [opt.command[0]]
shell = True
if re.compile(r'^[a-z0-9A-Z_/\.-]+$').match(cmd[0]):
shell = False
if shell:
cmd.append(cmd[0])
cmd.extend(opt.command[1:])
if opt.project_header \
and not shell \
and cmd[0] == 'git':
# If this is a direct git command that can enable colorized
# output and the user prefers coloring, add --color into the
# command line because we are going to wrap the command into
# a pipe and git won't know coloring should activate.
#
for cn in cmd[1:]:
if not cn.startswith('-'):
break
if cn in _CAN_COLOR:
class ColorCmd(Coloring):
def __init__(self, config, cmd):
Coloring.__init__(self, config, cmd)
if ColorCmd(self.manifest.manifestProject.config, cn).is_on:
cmd.insert(cmd.index(cn) + 1, '--color')
mirror = self.manifest.IsMirror
out = ForallColoring(self.manifest.manifestProject.config)
out.redirect(sys.stderr)
rc = 0
first = True
for project in self.GetProjects(args):
env = dict(os.environ.iteritems())
def setenv(name, val):
if val is None:
val = ''
env[name] = val
setenv('REPO_PROJECT', project.name)
setenv('REPO_PATH', project.relpath)
setenv('REPO_REMOTE', project.remote.name)
setenv('REPO_LREV', project\
.GetRemote(project.remote.name)\
.ToLocal(project.revision))
setenv('REPO_RREV', project.revision)
if mirror:
setenv('GIT_DIR', project.gitdir)
cwd = project.gitdir
else:
cwd = project.worktree
if opt.project_header:
stdin = subprocess.PIPE
stdout = subprocess.PIPE
stderr = subprocess.PIPE
else:
stdin = None
stdout = None
stderr = None
p = subprocess.Popen(cmd,
cwd = cwd,
shell = shell,
env = env,
stdin = stdin,
stdout = stdout,
stderr = stderr)
if opt.project_header:
class sfd(object):
def __init__(self, fd, dest):
self.fd = fd
self.dest = dest
def fileno(self):
return self.fd.fileno()
empty = True
didout = False
errbuf = ''
p.stdin.close()
s_in = [sfd(p.stdout, sys.stdout),
sfd(p.stderr, sys.stderr)]
for s in s_in:
flags = fcntl.fcntl(s.fd, fcntl.F_GETFL)
fcntl.fcntl(s.fd, fcntl.F_SETFL, flags | os.O_NONBLOCK)
while s_in:
in_ready, out_ready, err_ready = select.select(s_in, [], [])
for s in in_ready:
buf = s.fd.read(4096)
if not buf:
s.fd.close()
s_in.remove(s)
continue
if not opt.verbose:
if s.fd == p.stdout:
didout = True
else:
errbuf += buf
continue
if empty:
if first:
first = False
else:
out.nl()
out.project('project %s/', project.relpath)
out.nl()
out.flush()
if errbuf:
sys.stderr.write(errbuf)
sys.stderr.flush()
errbuf = ''
empty = False
s.dest.write(buf)
s.dest.flush()
r = p.wait()
if r != 0 and r != rc:
rc = r
if rc != 0:
sys.exit(rc)