1 # Copyright (c) 2011 The Chromium OS Authors.
3 # See file CREDITS for list of people who contributed to this
6 # This program is free software; you can redistribute it and/or
7 # modify it under the terms of the GNU General Public License as
8 # published by the Free Software Foundation; either version 2 of
9 # the License, or (at your option) any later version.
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30 from series import Series
32 # Tags that we detect and remove
33 re_remove = re.compile('^BUG=|^TEST=|^BRANCH=|^Change-Id:|^Review URL:'
34 '|Reviewed-on:|Commit-\w*:')
36 # Lines which are allowed after a TEST= line
37 re_allowed_after_test = re.compile('^Signed-off-by:')
40 re_signoff = re.compile('^Signed-off-by:')
42 # The start of the cover letter
43 re_cover = re.compile('^Cover-letter:')
46 re_cover_cc = re.compile('^Cover-letter-cc: *(.*)')
49 re_series = re.compile('^Series-([a-z-]*): *(.*)')
51 # Commit tags that we want to collect and keep
52 re_tag = re.compile('^(Tested-by|Acked-by|Reviewed-by|Cc): (.*)')
54 # The start of a new commit in the git log
55 re_commit = re.compile('^commit ([0-9a-f]*)$')
57 # We detect these since checkpatch doesn't always do it
58 re_space_before_tab = re.compile('^[+].* \t')
60 # States we can be in - can we use range() and still have comments?
61 STATE_MSG_HEADER = 0 # Still in the message header
62 STATE_PATCH_SUBJECT = 1 # In patch subject (first line of log for a commit)
63 STATE_PATCH_HEADER = 2 # In patch header (after the subject)
64 STATE_DIFFS = 3 # In the diff part (past --- line)
67 """Class for detecting/injecting tags in a patch or series of patches
69 We support processing the output of 'git log' to read out the tags we
70 are interested in. We can also process a patch file in order to remove
71 unwanted tags or inject additional ones. These correspond to the two
74 def __init__(self, series, name=None, is_log=False):
75 self.skip_blank = False # True to skip a single blank line
76 self.found_test = False # Found a TEST= line
77 self.lines_after_test = 0 # MNumber of lines found after TEST=
78 self.warn = [] # List of warnings we have collected
79 self.linenum = 1 # Output line number we are up to
80 self.in_section = None # Name of start...END section we are in
81 self.notes = [] # Series notes
82 self.section = [] # The current section...END section
83 self.series = series # Info about the patch series
84 self.is_log = is_log # True if indent like git log
85 self.in_change = 0 # Non-zero if we are in a change list
86 self.blank_count = 0 # Number of blank lines stored up
87 self.state = STATE_MSG_HEADER # What state are we in?
88 self.tags = [] # Tags collected, like Tested-by...
89 self.signoff = [] # Contents of signoff line
90 self.commit = None # Current commit
92 def AddToSeries(self, line, name, value):
93 """Add a new Series-xxx tag.
95 When a Series-xxx tag is detected, we come here to record it, if we
96 are scanning a 'git log'.
99 line: Source line containing tag (useful for debug/error messages)
100 name: Tag name (part after 'Series-')
101 value: Tag value (part after 'Series-xxx: ')
104 self.in_section = name
105 self.skip_blank = False
107 self.series.AddTag(self.commit, line, name, value)
109 def CloseCommit(self):
110 """Save the current commit into our commit list, and reset our state"""
111 if self.commit and self.is_log:
112 self.series.AddCommit(self.commit)
115 def FormatTags(self, tags):
117 for tag in sorted(tags):
118 if tag.startswith('Cc:'):
119 tag_list = tag[4:].split(',')
120 out_list += gitutil.BuildEmailList(tag_list, 'Cc:')
125 def ProcessLine(self, line):
126 """Process a single line of a patch file or commit log
128 This process a line and returns a list of lines to output. The list
129 may be empty or may contain multiple output lines.
131 This is where all the complicated logic is located. The class's
132 state is used to move between different states and detect things
135 We can be in one of two modes:
136 self.is_log == True: This is 'git log' mode, where most output is
137 indented by 4 characters and we are scanning for tags
139 self.is_log == False: This is 'patch' mode, where we already have
140 all the tags, and are processing patches to remove junk we
141 don't want, and add things we think are required.
144 line: text line to process
147 list of output lines, or [] if nothing should be output
149 # Initially we have no output. Prepare the input line string
151 line = line.rstrip('\n')
156 # Handle state transition and skipping blank lines
157 series_match = re_series.match(line)
158 commit_match = re_commit.match(line) if self.is_log else None
159 cover_cc_match = re_cover_cc.match(line)
161 if self.state == STATE_PATCH_HEADER:
162 tag_match = re_tag.match(line)
163 is_blank = not line.strip()
165 if (self.state == STATE_MSG_HEADER
166 or self.state == STATE_PATCH_SUBJECT):
169 # We don't have a subject in the text stream of patch files
170 # It has its own line with a Subject: tag
171 if not self.is_log and self.state == STATE_PATCH_SUBJECT:
174 self.state = STATE_MSG_HEADER
176 # If we are in a section, keep collecting lines until we see END
179 if self.in_section == 'cover':
180 self.series.cover = self.section
181 elif self.in_section == 'notes':
183 self.series.notes += self.section
185 self.warn.append("Unknown section '%s'" % self.in_section)
186 self.in_section = None
187 self.skip_blank = True
190 self.section.append(line)
192 # Detect the commit subject
193 elif not is_blank and self.state == STATE_PATCH_SUBJECT:
194 self.commit.subject = line
196 # Detect the tags we want to remove, and skip blank lines
197 elif re_remove.match(line):
198 self.skip_blank = True
200 # TEST= should be the last thing in the commit, so remove
201 # everything after it
202 if line.startswith('TEST='):
203 self.found_test = True
204 elif self.skip_blank and is_blank:
205 self.skip_blank = False
207 # Detect the start of a cover letter section
208 elif re_cover.match(line):
209 self.in_section = 'cover'
210 self.skip_blank = False
213 value = cover_cc_match.group(1)
214 self.AddToSeries(line, 'cover-cc', value)
216 # If we are in a change list, key collected lines until a blank one
219 # Blank line ends this change list
221 elif line == '---' or re_signoff.match(line):
223 out = self.ProcessLine(line)
226 self.series.AddChange(self.in_change, self.commit, line)
227 self.skip_blank = False
229 # Detect Series-xxx tags
231 name = series_match.group(1)
232 value = series_match.group(2)
233 if name == 'changes':
234 # value is the version number: e.g. 1, or 2
237 except ValueError as str:
238 raise ValueError("%s: Cannot decode version info '%s'" %
239 (self.commit.hash, line))
240 self.in_change = int(value)
242 self.AddToSeries(line, name, value)
243 self.skip_blank = True
245 # Detect the start of a new commit
248 # TODO: We should store the whole hash, and just display a subset
249 self.commit = commit.Commit(commit_match.group(1)[:8])
251 # Detect tags in the commit message
253 # Remove Tested-by self, since few will take much notice
254 if (tag_match.group(1) == 'Tested-by' and
255 tag_match.group(2).find(os.getenv('USER') + '@') != -1):
256 self.warn.append("Ignoring %s" % line)
257 elif tag_match.group(1) == 'Cc':
258 self.commit.AddCc(tag_match.group(2).split(','))
260 self.tags.append(line);
262 # Well that means this is an ordinary line
265 # Look for ugly ASCII characters
267 # TODO: Would be nicer to report source filename and line
269 self.warn.append("Line %d/%d ('%s') has funny ascii char" %
270 (self.linenum, pos, line))
273 # Look for space before tab
274 m = re_space_before_tab.match(line)
276 self.warn.append('Line %d/%d has space before tab' %
277 (self.linenum, m.start()))
279 # OK, we have a valid non-blank line
282 self.skip_blank = False
283 if self.state == STATE_DIFFS:
286 # If this is the start of the diffs section, emit our tags and
289 self.state = STATE_DIFFS
291 # Output the tags (signeoff first), then change list
293 log = self.series.MakeChangeLog(self.commit)
294 out += self.FormatTags(self.tags)
296 elif self.found_test:
297 if not re_allowed_after_test.match(line):
298 self.lines_after_test += 1
303 """Close out processing of this patch stream"""
305 if self.lines_after_test:
306 self.warn.append('Found %d lines after TEST=' %
307 self.lines_after_test)
309 def ProcessStream(self, infd, outfd):
310 """Copy a stream from infd to outfd, filtering out unwanting things.
312 This is used to process patch files one at a time.
315 infd: Input stream file object
316 outfd: Output stream file object
318 # Extract the filename from each diff, for nice warnings
321 re_fname = re.compile('diff --git a/(.*) b/.*')
323 line = infd.readline()
326 out = self.ProcessLine(line)
328 # Try to detect blank lines at EOF
330 match = re_fname.match(line)
333 fname = match.group(1)
335 self.blank_count += 1
337 if self.blank_count and (line == '-- ' or match):
338 self.warn.append("Found possible blank line(s) at "
339 "end of file '%s'" % last_fname)
340 outfd.write('+\n' * self.blank_count)
341 outfd.write(line + '\n')
346 def GetMetaDataForList(commit_range, git_dir=None, count=None,
348 """Reads out patch series metadata from the commits
350 This does a 'git log' on the relevant commits and pulls out the tags we
354 commit_range: Range of commits to count (e.g. 'HEAD..base')
355 git_dir: Path to git repositiory (None to use default)
356 count: Number of commits to list, or None for no limit
357 series: Series object to add information into. By default a new series
360 A Series object containing information about the commits.
362 params = ['git', 'log', '--no-color', '--reverse', '--no-decorate',
364 if count is not None:
365 params[2:2] = ['-n%d' % count]
367 params[1:1] = ['--git-dir', git_dir]
369 stdout = command.RunPipe(pipe, capture=True).stdout
370 ps = PatchStream(series, is_log=True)
371 for line in stdout.splitlines():
376 def GetMetaData(start, count):
377 """Reads out patch series metadata from the commits
379 This does a 'git log' on the relevant commits and pulls out the tags we
383 start: Commit to start from: 0=HEAD, 1=next one, etc.
384 count: Number of commits to list
386 return GetMetaDataForList('HEAD~%d' % start, None, count)
388 def FixPatch(backup_dir, fname, series, commit):
389 """Fix up a patch file, by adding/removing as required.
391 We remove our tags from the patch file, insert changes lists, etc.
392 The patch file is processed in place, and overwritten.
394 A backup file is put into backup_dir (if not None).
397 fname: Filename to patch file to process
398 series: Series information about this patch set
399 commit: Commit object for this patch file
401 A list of errors, or [] if all ok.
403 handle, tmpname = tempfile.mkstemp()
404 outfd = os.fdopen(handle, 'w')
405 infd = open(fname, 'r')
406 ps = PatchStream(series)
408 ps.ProcessStream(infd, outfd)
412 # Create a backup file if required
414 shutil.copy(fname, os.path.join(backup_dir, os.path.basename(fname)))
415 shutil.move(tmpname, fname)
418 def FixPatches(series, fnames):
419 """Fix up a list of patches identified by filenames
421 The patch files are processed in place, and overwritten.
424 series: The series object
425 fnames: List of patch files to process
427 # Current workflow creates patches, so we shouldn't need a backup
428 backup_dir = None #tempfile.mkdtemp('clean-patch')
431 commit = series.commits[count]
433 result = FixPatch(backup_dir, fname, series, commit)
435 print '%d warnings for %s:' % (len(result), fname)
440 print 'Cleaned %d patches' % count
443 def InsertCoverLetter(fname, series, count):
444 """Inserts a cover letter with the required info into patch 0
447 fname: Input / output filename of the cover letter file
448 series: Series object
449 count: Number of patches in the series
451 fd = open(fname, 'r')
452 lines = fd.readlines()
455 fd = open(fname, 'w')
457 prefix = series.GetPatchPrefix()
459 if line.startswith('Subject:'):
460 # TODO: if more than 10 patches this should save 00/xx, not 0/xx
461 line = 'Subject: [%s 0/%d] %s\n' % (prefix, count, text[0])
463 # Insert our cover letter
464 elif line.startswith('*** BLURB HERE ***'):
465 # First the blurb test
466 line = '\n'.join(text[1:]) + '\n'
467 if series.get('notes'):
468 line += '\n'.join(series.notes) + '\n'
470 # Now the change list
471 out = series.MakeChangeLog(None)
472 line += '\n' + '\n'.join(out)