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6949f70c6d
By default patman generates a combined changelog for the cover letter. This may not always be desirable. Many patches may have the same changes. These can be coalesced with "Series-process-log: uniq", but this is imperfect. Similar changes like "Move foo to patch 7" will not be merged with the similar "Move foo to this patch from patch 6". Changes may not make sense outside of the patch they are written for. For example, a change line of "Add check for bar" does not make sense outside of the context in which bar might be checked for. Some changes like "New" or "Lint" may be repeated many times throughout different change logs, but carry no useful information in a summary. Lastly, I like to summarize the broad strokes of the changes I have made in the cover letter, while documenting all the details in the appropriate patches. I think this makes it easier to get a good feel for what has changed, without making it difficult to wade through every change in the whole series. This patch adds two new tags to add changelog entries which only appear in the cover letter, or only appear in the commit. Changes documented with "Commit-changes" will only appear in the commit, and will not appear in the cover letter. Changes documented with "Cover-changes" will not appear in any commit, and will only appear in the cover letter. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
609 lines
22 KiB
Python
609 lines
22 KiB
Python
# SPDX-License-Identifier: GPL-2.0+
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# Copyright (c) 2011 The Chromium OS Authors.
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#
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import datetime
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import math
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import os
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import re
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import shutil
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import tempfile
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from patman import command
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from patman import commit
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from patman import gitutil
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from patman.series import Series
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# Tags that we detect and remove
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re_remove = re.compile('^BUG=|^TEST=|^BRANCH=|^Review URL:'
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'|Reviewed-on:|Commit-\w*:')
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# Lines which are allowed after a TEST= line
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re_allowed_after_test = re.compile('^Signed-off-by:')
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# Signoffs
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re_signoff = re.compile('^Signed-off-by: *(.*)')
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# Cover letter tag
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re_cover = re.compile('^Cover-([a-z-]*): *(.*)')
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# Patch series tag
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re_series_tag = re.compile('^Series-([a-z-]*): *(.*)')
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# Change-Id will be used to generate the Message-Id and then be stripped
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re_change_id = re.compile('^Change-Id: *(.*)')
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# Commit series tag
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re_commit_tag = re.compile('^Commit-([a-z-]*): *(.*)')
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# Commit tags that we want to collect and keep
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re_tag = re.compile('^(Tested-by|Acked-by|Reviewed-by|Patch-cc): (.*)')
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# The start of a new commit in the git log
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re_commit = re.compile('^commit ([0-9a-f]*)$')
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# We detect these since checkpatch doesn't always do it
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re_space_before_tab = re.compile('^[+].* \t')
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# States we can be in - can we use range() and still have comments?
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STATE_MSG_HEADER = 0 # Still in the message header
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STATE_PATCH_SUBJECT = 1 # In patch subject (first line of log for a commit)
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STATE_PATCH_HEADER = 2 # In patch header (after the subject)
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STATE_DIFFS = 3 # In the diff part (past --- line)
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class PatchStream:
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"""Class for detecting/injecting tags in a patch or series of patches
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We support processing the output of 'git log' to read out the tags we
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are interested in. We can also process a patch file in order to remove
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unwanted tags or inject additional ones. These correspond to the two
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phases of processing.
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"""
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def __init__(self, series, name=None, is_log=False):
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self.skip_blank = False # True to skip a single blank line
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self.found_test = False # Found a TEST= line
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self.lines_after_test = 0 # Number of lines found after TEST=
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self.warn = [] # List of warnings we have collected
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self.linenum = 1 # Output line number we are up to
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self.in_section = None # Name of start...END section we are in
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self.notes = [] # Series notes
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self.section = [] # The current section...END section
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self.series = series # Info about the patch series
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self.is_log = is_log # True if indent like git log
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self.in_change = None # Name of the change list we are in
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self.change_version = 0 # Non-zero if we are in a change list
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self.blank_count = 0 # Number of blank lines stored up
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self.state = STATE_MSG_HEADER # What state are we in?
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self.signoff = [] # Contents of signoff line
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self.commit = None # Current commit
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def AddToSeries(self, line, name, value):
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"""Add a new Series-xxx tag.
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When a Series-xxx tag is detected, we come here to record it, if we
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are scanning a 'git log'.
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Args:
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line: Source line containing tag (useful for debug/error messages)
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name: Tag name (part after 'Series-')
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value: Tag value (part after 'Series-xxx: ')
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"""
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if name == 'notes':
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self.in_section = name
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self.skip_blank = False
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if self.is_log:
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self.series.AddTag(self.commit, line, name, value)
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def AddToCommit(self, line, name, value):
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"""Add a new Commit-xxx tag.
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When a Commit-xxx tag is detected, we come here to record it.
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Args:
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line: Source line containing tag (useful for debug/error messages)
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name: Tag name (part after 'Commit-')
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value: Tag value (part after 'Commit-xxx: ')
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"""
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if name == 'notes':
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self.in_section = 'commit-' + name
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self.skip_blank = False
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def CloseCommit(self):
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"""Save the current commit into our commit list, and reset our state"""
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if self.commit and self.is_log:
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self.series.AddCommit(self.commit)
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self.commit = None
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# If 'END' is missing in a 'Cover-letter' section, and that section
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# happens to show up at the very end of the commit message, this is
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# the chance for us to fix it up.
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if self.in_section == 'cover' and self.is_log:
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self.series.cover = self.section
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self.in_section = None
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self.skip_blank = True
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self.section = []
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def ParseVersion(self, value, line):
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"""Parse a version from a *-changes tag
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Args:
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value: Tag value (part after 'xxx-changes: '
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line: Source line containing tag
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Returns:
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The version as an integer
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"""
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try:
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return int(value)
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except ValueError as str:
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raise ValueError("%s: Cannot decode version info '%s'" %
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(self.commit.hash, line))
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def ProcessLine(self, line):
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"""Process a single line of a patch file or commit log
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This process a line and returns a list of lines to output. The list
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may be empty or may contain multiple output lines.
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This is where all the complicated logic is located. The class's
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state is used to move between different states and detect things
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properly.
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We can be in one of two modes:
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self.is_log == True: This is 'git log' mode, where most output is
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indented by 4 characters and we are scanning for tags
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self.is_log == False: This is 'patch' mode, where we already have
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all the tags, and are processing patches to remove junk we
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don't want, and add things we think are required.
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Args:
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line: text line to process
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Returns:
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list of output lines, or [] if nothing should be output
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"""
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# Initially we have no output. Prepare the input line string
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out = []
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line = line.rstrip('\n')
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commit_match = re_commit.match(line) if self.is_log else None
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if self.is_log:
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if line[:4] == ' ':
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line = line[4:]
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# Handle state transition and skipping blank lines
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series_tag_match = re_series_tag.match(line)
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change_id_match = re_change_id.match(line)
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commit_tag_match = re_commit_tag.match(line)
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cover_match = re_cover.match(line)
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signoff_match = re_signoff.match(line)
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tag_match = None
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if self.state == STATE_PATCH_HEADER:
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tag_match = re_tag.match(line)
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is_blank = not line.strip()
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if is_blank:
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if (self.state == STATE_MSG_HEADER
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or self.state == STATE_PATCH_SUBJECT):
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self.state += 1
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# We don't have a subject in the text stream of patch files
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# It has its own line with a Subject: tag
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if not self.is_log and self.state == STATE_PATCH_SUBJECT:
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self.state += 1
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elif commit_match:
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self.state = STATE_MSG_HEADER
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# If a tag is detected, or a new commit starts
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if series_tag_match or commit_tag_match or change_id_match or \
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cover_match or signoff_match or self.state == STATE_MSG_HEADER:
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# but we are already in a section, this means 'END' is missing
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# for that section, fix it up.
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if self.in_section:
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self.warn.append("Missing 'END' in section '%s'" % self.in_section)
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if self.in_section == 'cover':
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self.series.cover = self.section
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elif self.in_section == 'notes':
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if self.is_log:
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self.series.notes += self.section
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elif self.in_section == 'commit-notes':
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if self.is_log:
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self.commit.notes += self.section
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else:
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self.warn.append("Unknown section '%s'" % self.in_section)
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self.in_section = None
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self.skip_blank = True
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self.section = []
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# but we are already in a change list, that means a blank line
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# is missing, fix it up.
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if self.in_change:
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self.warn.append("Missing 'blank line' in section '%s-changes'" % self.in_change)
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self.in_change = None
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self.change_version = 0
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# If we are in a section, keep collecting lines until we see END
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if self.in_section:
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if line == 'END':
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if self.in_section == 'cover':
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self.series.cover = self.section
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elif self.in_section == 'notes':
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if self.is_log:
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self.series.notes += self.section
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elif self.in_section == 'commit-notes':
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if self.is_log:
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self.commit.notes += self.section
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else:
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self.warn.append("Unknown section '%s'" % self.in_section)
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self.in_section = None
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self.skip_blank = True
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self.section = []
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else:
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self.section.append(line)
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# Detect the commit subject
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elif not is_blank and self.state == STATE_PATCH_SUBJECT:
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self.commit.subject = line
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# Detect the tags we want to remove, and skip blank lines
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elif re_remove.match(line) and not commit_tag_match:
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self.skip_blank = True
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# TEST= should be the last thing in the commit, so remove
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# everything after it
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if line.startswith('TEST='):
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self.found_test = True
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elif self.skip_blank and is_blank:
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self.skip_blank = False
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# Detect Cover-xxx tags
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elif cover_match:
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name = cover_match.group(1)
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value = cover_match.group(2)
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if name == 'letter':
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self.in_section = 'cover'
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self.skip_blank = False
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elif name == 'letter-cc':
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self.AddToSeries(line, 'cover-cc', value)
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elif name == 'changes':
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self.in_change = 'Cover'
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self.change_version = self.ParseVersion(value, line)
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# If we are in a change list, key collected lines until a blank one
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elif self.in_change:
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if is_blank:
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# Blank line ends this change list
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self.in_change = None
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self.change_version = 0
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elif line == '---':
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self.in_change = None
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self.change_version = 0
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out = self.ProcessLine(line)
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else:
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if self.is_log:
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if self.in_change == 'Series':
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self.series.AddChange(self.change_version, self.commit, line)
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elif self.in_change == 'Cover':
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self.series.AddChange(self.change_version, None, line)
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elif self.in_change == 'Commit':
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self.commit.AddChange(self.change_version, line)
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self.skip_blank = False
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# Detect Series-xxx tags
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elif series_tag_match:
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name = series_tag_match.group(1)
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value = series_tag_match.group(2)
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if name == 'changes':
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# value is the version number: e.g. 1, or 2
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self.in_change = 'Series'
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self.change_version = self.ParseVersion(value, line)
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else:
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self.AddToSeries(line, name, value)
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self.skip_blank = True
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# Detect Change-Id tags
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elif change_id_match:
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value = change_id_match.group(1)
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if self.is_log:
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if self.commit.change_id:
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raise ValueError("%s: Two Change-Ids: '%s' vs. '%s'" %
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(self.commit.hash, self.commit.change_id, value))
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self.commit.change_id = value
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self.skip_blank = True
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# Detect Commit-xxx tags
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elif commit_tag_match:
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name = commit_tag_match.group(1)
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value = commit_tag_match.group(2)
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if name == 'notes':
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self.AddToCommit(line, name, value)
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self.skip_blank = True
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elif name == 'changes':
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self.in_change = 'Commit'
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self.change_version = self.ParseVersion(value, line)
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# Detect the start of a new commit
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elif commit_match:
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self.CloseCommit()
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self.commit = commit.Commit(commit_match.group(1))
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# Detect tags in the commit message
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elif tag_match:
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# Remove Tested-by self, since few will take much notice
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if (tag_match.group(1) == 'Tested-by' and
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tag_match.group(2).find(os.getenv('USER') + '@') != -1):
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self.warn.append("Ignoring %s" % line)
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elif tag_match.group(1) == 'Patch-cc':
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self.commit.AddCc(tag_match.group(2).split(','))
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else:
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out = [line]
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# Suppress duplicate signoffs
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elif signoff_match:
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if (self.is_log or not self.commit or
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self.commit.CheckDuplicateSignoff(signoff_match.group(1))):
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out = [line]
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# Well that means this is an ordinary line
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else:
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# Look for space before tab
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m = re_space_before_tab.match(line)
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if m:
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self.warn.append('Line %d/%d has space before tab' %
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(self.linenum, m.start()))
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# OK, we have a valid non-blank line
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out = [line]
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self.linenum += 1
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self.skip_blank = False
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if self.state == STATE_DIFFS:
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pass
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# If this is the start of the diffs section, emit our tags and
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# change log
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elif line == '---':
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self.state = STATE_DIFFS
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# Output the tags (signoff first), then change list
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out = []
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log = self.series.MakeChangeLog(self.commit)
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out += [line]
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if self.commit:
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out += self.commit.notes
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out += [''] + log
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elif self.found_test:
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if not re_allowed_after_test.match(line):
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self.lines_after_test += 1
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return out
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def Finalize(self):
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"""Close out processing of this patch stream"""
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self.CloseCommit()
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if self.lines_after_test:
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self.warn.append('Found %d lines after TEST=' %
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self.lines_after_test)
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def WriteMessageId(self, outfd):
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"""Write the Message-Id into the output.
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This is based on the Change-Id in the original patch, the version,
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and the prefix.
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Args:
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outfd: Output stream file object
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"""
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if not self.commit.change_id:
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return
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# If the count is -1 we're testing, so use a fixed time
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if self.commit.count == -1:
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time_now = datetime.datetime(1999, 12, 31, 23, 59, 59)
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else:
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time_now = datetime.datetime.now()
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# In theory there is email.utils.make_msgid() which would be nice
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# to use, but it already produces something way too long and thus
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# will produce ugly commit lines if someone throws this into
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# a "Link:" tag in the final commit. So (sigh) roll our own.
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# Start with the time; presumably we wouldn't send the same series
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# with the same Change-Id at the exact same second.
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parts = [time_now.strftime("%Y%m%d%H%M%S")]
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# These seem like they would be nice to include.
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if 'prefix' in self.series:
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parts.append(self.series['prefix'])
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if 'version' in self.series:
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parts.append("v%s" % self.series['version'])
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parts.append(str(self.commit.count + 1))
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# The Change-Id must be last, right before the @
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parts.append(self.commit.change_id)
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# Join parts together with "." and write it out.
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outfd.write('Message-Id: <%s@changeid>\n' % '.'.join(parts))
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def ProcessStream(self, infd, outfd):
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"""Copy a stream from infd to outfd, filtering out unwanting things.
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This is used to process patch files one at a time.
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Args:
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infd: Input stream file object
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outfd: Output stream file object
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"""
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# Extract the filename from each diff, for nice warnings
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fname = None
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last_fname = None
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re_fname = re.compile('diff --git a/(.*) b/.*')
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self.WriteMessageId(outfd)
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while True:
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line = infd.readline()
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if not line:
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break
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out = self.ProcessLine(line)
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# Try to detect blank lines at EOF
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for line in out:
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match = re_fname.match(line)
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if match:
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last_fname = fname
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fname = match.group(1)
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if line == '+':
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self.blank_count += 1
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else:
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if self.blank_count and (line == '-- ' or match):
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self.warn.append("Found possible blank line(s) at "
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"end of file '%s'" % last_fname)
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outfd.write('+\n' * self.blank_count)
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outfd.write(line + '\n')
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self.blank_count = 0
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self.Finalize()
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def GetMetaDataForList(commit_range, git_dir=None, count=None,
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series = None, allow_overwrite=False):
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"""Reads out patch series metadata from the commits
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This does a 'git log' on the relevant commits and pulls out the tags we
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are interested in.
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Args:
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commit_range: Range of commits to count (e.g. 'HEAD..base')
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git_dir: Path to git repositiory (None to use default)
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count: Number of commits to list, or None for no limit
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series: Series object to add information into. By default a new series
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is started.
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allow_overwrite: Allow tags to overwrite an existing tag
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Returns:
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|
A Series object containing information about the commits.
|
|
"""
|
|
if not series:
|
|
series = Series()
|
|
series.allow_overwrite = allow_overwrite
|
|
params = gitutil.LogCmd(commit_range, reverse=True, count=count,
|
|
git_dir=git_dir)
|
|
stdout = command.RunPipe([params], capture=True).stdout
|
|
ps = PatchStream(series, is_log=True)
|
|
for line in stdout.splitlines():
|
|
ps.ProcessLine(line)
|
|
ps.Finalize()
|
|
return series
|
|
|
|
def GetMetaData(start, count):
|
|
"""Reads out patch series metadata from the commits
|
|
|
|
This does a 'git log' on the relevant commits and pulls out the tags we
|
|
are interested in.
|
|
|
|
Args:
|
|
start: Commit to start from: 0=HEAD, 1=next one, etc.
|
|
count: Number of commits to list
|
|
"""
|
|
return GetMetaDataForList('HEAD~%d' % start, None, count)
|
|
|
|
def GetMetaDataForTest(text):
|
|
"""Process metadata from a file containing a git log. Used for tests
|
|
|
|
Args:
|
|
text:
|
|
"""
|
|
series = Series()
|
|
ps = PatchStream(series, is_log=True)
|
|
for line in text.splitlines():
|
|
ps.ProcessLine(line)
|
|
ps.Finalize()
|
|
return series
|
|
|
|
def FixPatch(backup_dir, fname, series, commit):
|
|
"""Fix up a patch file, by adding/removing as required.
|
|
|
|
We remove our tags from the patch file, insert changes lists, etc.
|
|
The patch file is processed in place, and overwritten.
|
|
|
|
A backup file is put into backup_dir (if not None).
|
|
|
|
Args:
|
|
fname: Filename to patch file to process
|
|
series: Series information about this patch set
|
|
commit: Commit object for this patch file
|
|
Return:
|
|
A list of errors, or [] if all ok.
|
|
"""
|
|
handle, tmpname = tempfile.mkstemp()
|
|
outfd = os.fdopen(handle, 'w', encoding='utf-8')
|
|
infd = open(fname, 'r', encoding='utf-8')
|
|
ps = PatchStream(series)
|
|
ps.commit = commit
|
|
ps.ProcessStream(infd, outfd)
|
|
infd.close()
|
|
outfd.close()
|
|
|
|
# Create a backup file if required
|
|
if backup_dir:
|
|
shutil.copy(fname, os.path.join(backup_dir, os.path.basename(fname)))
|
|
shutil.move(tmpname, fname)
|
|
return ps.warn
|
|
|
|
def FixPatches(series, fnames):
|
|
"""Fix up a list of patches identified by filenames
|
|
|
|
The patch files are processed in place, and overwritten.
|
|
|
|
Args:
|
|
series: The series object
|
|
fnames: List of patch files to process
|
|
"""
|
|
# Current workflow creates patches, so we shouldn't need a backup
|
|
backup_dir = None #tempfile.mkdtemp('clean-patch')
|
|
count = 0
|
|
for fname in fnames:
|
|
commit = series.commits[count]
|
|
commit.patch = fname
|
|
commit.count = count
|
|
result = FixPatch(backup_dir, fname, series, commit)
|
|
if result:
|
|
print('%d warnings for %s:' % (len(result), fname))
|
|
for warn in result:
|
|
print('\t', warn)
|
|
print
|
|
count += 1
|
|
print('Cleaned %d patches' % count)
|
|
|
|
def InsertCoverLetter(fname, series, count):
|
|
"""Inserts a cover letter with the required info into patch 0
|
|
|
|
Args:
|
|
fname: Input / output filename of the cover letter file
|
|
series: Series object
|
|
count: Number of patches in the series
|
|
"""
|
|
fd = open(fname, 'r')
|
|
lines = fd.readlines()
|
|
fd.close()
|
|
|
|
fd = open(fname, 'w')
|
|
text = series.cover
|
|
prefix = series.GetPatchPrefix()
|
|
for line in lines:
|
|
if line.startswith('Subject:'):
|
|
# if more than 10 or 100 patches, it should say 00/xx, 000/xxx, etc
|
|
zero_repeat = int(math.log10(count)) + 1
|
|
zero = '0' * zero_repeat
|
|
line = 'Subject: [%s %s/%d] %s\n' % (prefix, zero, count, text[0])
|
|
|
|
# Insert our cover letter
|
|
elif line.startswith('*** BLURB HERE ***'):
|
|
# First the blurb test
|
|
line = '\n'.join(text[1:]) + '\n'
|
|
if series.get('notes'):
|
|
line += '\n'.join(series.notes) + '\n'
|
|
|
|
# Now the change list
|
|
out = series.MakeChangeLog(None)
|
|
line += '\n' + '\n'.join(out)
|
|
fd.write(line)
|
|
fd.close()
|