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-rw-r--r--b4/__init__.py22
-rw-r--r--b4/command.py6
-rw-r--r--b4/diff.py97
-rw-r--r--b4/mbox.py4
4 files changed, 105 insertions, 24 deletions
diff --git a/b4/__init__.py b/b4/__init__.py
index 064f8b8..414f669 100644
--- a/b4/__init__.py
+++ b/b4/__init__.py
@@ -1844,7 +1844,13 @@ def save_strict_thread(in_mbx, out_mbx, msgid):
logger.info('Reduced thread to strict matches only (%s->%s)', len(in_mbx), len(out_mbx))
-def get_pi_thread_by_url(t_mbx_url, savefile):
+def get_pi_thread_by_url(t_mbx_url, savefile, nocache=False):
+ cachedir = get_cache_dir()
+ cachefile = os.path.join(cachedir, '%s.pi.mbx' % urllib.parse.quote_plus(t_mbx_url))
+ if os.path.exists(cachefile) and not nocache:
+ logger.debug('Using cached copy: %s', cachefile)
+ shutil.copyfile(cachefile, savefile)
+ return savefile
session = get_requests_session()
resp = session.get(t_mbx_url)
if resp.status_code != 200:
@@ -1858,22 +1864,13 @@ def get_pi_thread_by_url(t_mbx_url, savefile):
with open(savefile, 'wb') as fh:
logger.debug('Saving %s', savefile)
fh.write(t_mbox)
+ shutil.copyfile(savefile, cachefile)
return savefile
def get_pi_thread_by_msgid(msgid, savefile, useproject=None, nocache=False):
qmsgid = urllib.parse.quote_plus(msgid)
config = get_main_config()
- cachedir = get_cache_dir()
- base = msgid
- if useproject:
- base = '%s-%s' % (useproject, msgid)
- cachefile = os.path.join(cachedir, '%s.pi.mbx' % urllib.parse.quote_plus(base))
- if os.path.exists(cachefile) and not nocache:
- logger.debug('Using cached copy: %s', cachefile)
- shutil.copyfile(cachefile, savefile)
- return savefile
-
# Grab the head from lore, to see where we are redirected
midmask = config['midmask'] % qmsgid
loc = urllib.parse.urlparse(midmask)
@@ -1894,7 +1891,7 @@ def get_pi_thread_by_msgid(msgid, savefile, useproject=None, nocache=False):
logger.debug('t_mbx_url=%s', t_mbx_url)
logger.critical('Grabbing thread from %s', projurl.split('://')[1])
- in_mbxf = get_pi_thread_by_url(t_mbx_url, '%s-loose' % savefile)
+ in_mbxf = get_pi_thread_by_url(t_mbx_url, '%s-loose' % savefile, nocache=nocache)
if not in_mbxf:
return None
in_mbx = mailbox.mbox(in_mbxf)
@@ -1903,7 +1900,6 @@ def get_pi_thread_by_msgid(msgid, savefile, useproject=None, nocache=False):
in_mbx.close()
out_mbx.close()
os.unlink(in_mbxf)
- shutil.copyfile(savefile, cachefile)
return savefile
diff --git a/b4/command.py b/b4/command.py
index 12900ff..80b072a 100644
--- a/b4/command.py
+++ b/b4/command.py
@@ -181,6 +181,12 @@ def cmd():
help='Do not use local cache')
sp_diff.add_argument('-v', '--compare-versions', dest='wantvers', type=int, default=None, nargs='+',
help='Compare specific versions instead of latest and one before that, e.g. -v 3 5')
+ sp_diff.add_argument('-n', '--no-diff', dest='nodiff', action='store_true', default=False,
+ help='Do not generate a diff, just show the command to do it')
+ sp_diff.add_argument('-o', '--output-diff', dest='outdiff', default=None,
+ help='Save diff into this file instead of outputting to stdout')
+ sp_diff.add_argument('-c', '--color', dest='color', action='store_true', default=False,
+ help='Force color output even when writing to file')
sp_diff.set_defaults(func=cmd_diff)
cmdargs = parser.parse_args()
diff --git a/b4/diff.py b/b4/diff.py
index 0ce2283..36bdfd6 100644
--- a/b4/diff.py
+++ b/b4/diff.py
@@ -10,6 +10,9 @@ import sys
import b4
import b4.mbox
import mailbox
+import shutil
+import urllib.parse
+
from tempfile import mkstemp
@@ -17,6 +20,45 @@ logger = b4.logger
def make_fake_commit_range(gitdir, lser):
+ start_commit = end_commit = None
+ # Do we have it in cache already?
+ cachedir = b4.get_cache_dir()
+ # Use the msgid of the first non-None patch in the series
+ msgid = None
+ for lmsg in lser.patches:
+ if lmsg is not None:
+ msgid = lmsg.msgid
+ break
+ if msgid is None:
+ logger.critical('Cannot operate on an empty series')
+ return None, None
+ cachefile = os.path.join(cachedir, '%s.fakeam' % urllib.parse.quote_plus(msgid))
+ if os.path.exists(cachefile):
+ stalecache = False
+ with open(cachefile, 'r') as fh:
+ cachedata = fh.read()
+ chunks = cachedata.strip().split()
+ if len(chunks) == 2:
+ start_commit, end_commit = chunks
+ else:
+ stalecache = True
+ if start_commit is not None and end_commit is not None:
+ # Make sure they are still there
+ ecode, out = b4.git_run_command(gitdir, ['cat-file', '-e', start_commit])
+ if ecode > 0:
+ stalecache = True
+ else:
+ ecode, out = b4.git_run_command(gitdir, ['cat-file', '-e', end_commit])
+ if ecode > 0:
+ stalecache = True
+ else:
+ logger.debug('Using previously generated range')
+ return start_commit, end_commit
+
+ if stalecache:
+ logger.debug('Stale cache for [v%s] %s', lser.revision, lser.subject)
+ os.unlink(cachefile)
+
logger.info('Preparing fake-am for v%s: %s', lser.revision, lser.subject)
with b4.git_temp_worktree(gitdir):
# We are in a temporary chdir at this time, so writing to a known file should be safe
@@ -73,6 +115,11 @@ def make_fake_commit_range(gitdir, lser):
end_commit = out.strip()
logger.info(' range: %.12s..%.12s', start_commit, end_commit)
+ with open(cachefile, 'w') as fh:
+ logger.debug('Saving into cache: %s', cachefile)
+ logger.debug(' %s..%s', start_commit, end_commit)
+ fh.write(f'{start_commit} {end_commit}\n')
+
return start_commit, end_commit
@@ -84,12 +131,26 @@ def main(cmdargs):
# start by grabbing the mbox provided
savefile = mkstemp('b4-diff-to')[1]
- mboxfile = b4.get_pi_thread_by_msgid(msgid, savefile, useproject=cmdargs.useproject, nocache=cmdargs.nocache)
- if mboxfile is None:
- logger.critical('Unable to retrieve thread: %s', msgid)
- return
- logger.info('Retrieved %s messages in the thread', len(mboxfile))
- b4.mbox.get_extra_series(mboxfile, direction=-1, wantvers=cmdargs.wantvers)
+ # Do we have a cache of this lookup?
+ cachedir = b4.get_cache_dir()
+ if cmdargs.wantvers:
+ cachefile = os.path.join(cachedir,
+ '%s-%s.diff.mbx' % (urllib.parse.quote_plus(msgid), '-'.join(cmdargs.wantvers)))
+ else:
+ cachefile = os.path.join(cachedir, '%s-latest.diff.mbx' % urllib.parse.quote_plus(msgid))
+ if os.path.exists(cachefile) and not cmdargs.nocache:
+ logger.info('Using cached copy of the lookup')
+ shutil.copyfile(cachefile, savefile)
+ mboxfile = savefile
+ else:
+ mboxfile = b4.get_pi_thread_by_msgid(msgid, savefile, useproject=cmdargs.useproject, nocache=cmdargs.nocache)
+ if mboxfile is None:
+ logger.critical('Unable to retrieve thread: %s', msgid)
+ return
+ logger.info('Retrieved %s messages in the thread', len(mboxfile))
+ b4.mbox.get_extra_series(mboxfile, direction=-1, wantvers=cmdargs.wantvers)
+
+ shutil.copyfile(mboxfile, cachefile)
mbx = mailbox.mbox(mboxfile)
count = len(mbx)
logger.info('---')
@@ -136,6 +197,24 @@ def main(cmdargs):
os.unlink(mboxfile)
sys.exit(1)
logger.info('---')
- logger.info('Success, you may now run:')
- logger.info(' git range-diff %.12s..%.12s %.12s..%.12s', lsc, lec, usc, uec)
-
+ grdcmd = 'git range-diff %.12s..%.12s %.12s..%.12s' % (lsc, lec, usc, uec)
+ if cmdargs.nodiff:
+ logger.info('Success, to compare v%s and v%s:', lower, upper)
+ logger.info(f' {grdcmd}')
+ sys.exit(0)
+ logger.info('Running: %s', grdcmd)
+ gitargs = ['range-diff', f'{lsc}..{lec}', f'{usc}..{uec}']
+ if cmdargs.outdiff is None or cmdargs.color:
+ gitargs.append('--color')
+ ecode, rdiff = b4.git_run_command(cmdargs.gitdir, gitargs)
+ if ecode > 0:
+ logger.critical('Unable to generate diff')
+ logger.critical('Try running it yourself:')
+ logger.critical(f' {grdcmd}')
+ sys.exit(1)
+ if cmdargs.outdiff is not None:
+ logger.info('Writing %s', cmdargs.outdiff)
+ fh = open(cmdargs.outdiff, 'w')
+ else:
+ fh = sys.stdout
+ fh.write(rdiff)
diff --git a/b4/mbox.py b/b4/mbox.py
index 9ff88a6..e03ef6c 100644
--- a/b4/mbox.py
+++ b/b4/mbox.py
@@ -310,7 +310,7 @@ def am_mbox_to_quilt(am_mbx, q_dirname):
sfh.write('%s\n' % patch_filename)
-def get_extra_series(mboxfile, direction=1, wantvers=None):
+def get_extra_series(mboxfile, direction=1, wantvers=None, nocache=False):
# Open the mbox and find the latest series mentioned in it
mbx = mailbox.mbox(mboxfile)
base_msg = None
@@ -415,7 +415,7 @@ def get_extra_series(mboxfile, direction=1, wantvers=None):
continue
t_mbx_url = '%st.mbox.gz' % link
savefile = mkstemp('b4-get')[1]
- nt_mboxfile = b4.get_pi_thread_by_url(t_mbx_url, savefile)
+ nt_mboxfile = b4.get_pi_thread_by_url(t_mbx_url, savefile, nocache=nocache)
nt_mbx = mailbox.mbox(nt_mboxfile)
# Append all of these to the existing mailbox
new_adds = 0