mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-19 00:18:51 +09:00
![Tom Rini](/assets/img/avatar_default.png)
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
527 lines
19 KiB
Python
527 lines
19 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 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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import command
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import commit
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import gitutil
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from series import Series
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# Tags that we detect and remove
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re_remove = re.compile('^BUG=|^TEST=|^BRANCH=|^Change-Id:|^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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# The start of the cover letter
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re_cover = re.compile('^Cover-letter:')
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# A cover letter Cc
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re_cover_cc = re.compile('^Cover-letter-cc: *(.*)')
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# Patch series tag
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re_series_tag = re.compile('^Series-([a-z-]*): *(.*)')
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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 # MNumber 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 = 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 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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commit_tag_match = re_commit_tag.match(line)
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cover_match = re_cover.match(line)
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cover_cc_match = re_cover_cc.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 \
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cover_match or cover_cc_match or signoff_match or \
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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 'Series-changes'")
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self.in_change = 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 the start of a cover letter section
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elif cover_match:
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self.in_section = 'cover'
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self.skip_blank = False
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elif cover_cc_match:
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value = cover_cc_match.group(1)
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self.AddToSeries(line, 'cover-cc', value)
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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 = 0
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elif line == '---':
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self.in_change = 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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self.series.AddChange(self.in_change, self.commit, 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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try:
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value = 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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self.in_change = int(value)
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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 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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# 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 (signeoff 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 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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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.
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"""
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if not series:
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series = Series()
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series.allow_overwrite = allow_overwrite
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params = gitutil.LogCmd(commit_range, reverse=True, count=count,
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git_dir=git_dir)
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stdout = command.RunPipe([params], capture=True).stdout
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ps = PatchStream(series, is_log=True)
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for line in stdout.splitlines():
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ps.ProcessLine(line)
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ps.Finalize()
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return series
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def GetMetaData(start, count):
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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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start: Commit to start from: 0=HEAD, 1=next one, etc.
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count: Number of commits to list
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"""
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return GetMetaDataForList('HEAD~%d' % start, None, count)
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def GetMetaDataForTest(text):
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"""Process metadata from a file containing a git log. Used for tests
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Args:
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text:
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"""
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series = Series()
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ps = PatchStream(series, is_log=True)
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for line in text.splitlines():
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ps.ProcessLine(line)
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ps.Finalize()
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return series
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def FixPatch(backup_dir, fname, series, commit):
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"""Fix up a patch file, by adding/removing as required.
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We remove our tags from the patch file, insert changes lists, etc.
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The patch file is processed in place, and overwritten.
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A backup file is put into backup_dir (if not None).
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Args:
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fname: Filename to patch file to process
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series: Series information about this patch set
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commit: Commit object for this patch file
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Return:
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A list of errors, or [] if all ok.
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"""
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handle, tmpname = tempfile.mkstemp()
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outfd = os.fdopen(handle, 'w')
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infd = open(fname, 'r')
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ps = PatchStream(series)
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ps.commit = commit
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ps.ProcessStream(infd, outfd)
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infd.close()
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outfd.close()
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# Create a backup file if required
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if backup_dir:
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shutil.copy(fname, os.path.join(backup_dir, os.path.basename(fname)))
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shutil.move(tmpname, fname)
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return ps.warn
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def FixPatches(series, fnames):
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"""Fix up a list of patches identified by filenames
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The patch files are processed in place, and overwritten.
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Args:
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series: The series object
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fnames: List of patch files to process
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"""
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# Current workflow creates patches, so we shouldn't need a backup
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backup_dir = None #tempfile.mkdtemp('clean-patch')
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count = 0
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for fname in fnames:
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commit = series.commits[count]
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commit.patch = fname
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result = FixPatch(backup_dir, fname, series, commit)
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if result:
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print('%d warnings for %s:' % (len(result), fname))
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for warn in result:
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print('\t', warn)
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print
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count += 1
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print('Cleaned %d patches' % count)
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def InsertCoverLetter(fname, series, count):
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"""Inserts a cover letter with the required info into patch 0
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Args:
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fname: Input / output filename of the cover letter file
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series: Series object
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count: Number of patches in the series
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"""
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fd = open(fname, 'r')
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lines = fd.readlines()
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fd.close()
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|
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fd = open(fname, 'w')
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text = series.cover
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prefix = series.GetPatchPrefix()
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for line in lines:
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if line.startswith('Subject:'):
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# if more than 10 or 100 patches, it should say 00/xx, 000/xxx, etc
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zero_repeat = int(math.log10(count)) + 1
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zero = '0' * zero_repeat
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line = 'Subject: [%s %s/%d] %s\n' % (prefix, zero, count, text[0])
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|
|
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# Insert our cover letter
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elif line.startswith('*** BLURB HERE ***'):
|
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# First the blurb test
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line = '\n'.join(text[1:]) + '\n'
|
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if series.get('notes'):
|
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line += '\n'.join(series.notes) + '\n'
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|
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# Now the change list
|
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out = series.MakeChangeLog(None)
|
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line += '\n' + '\n'.join(out)
|
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fd.write(line)
|
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fd.close()
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