usr/src/tools/scripts/git-pbchk.py

   1 #!/usr/bin/python2.6
   2 #
   3 #  This program is free software; you can redistribute it and/or modify
   4 #  it under the terms of the GNU General Public License version 2
   5 #  as published by the Free Software Foundation.
   6 #
   7 #  This program is distributed in the hope that it will be useful,
   8 #  but WITHOUT ANY WARRANTY; without even the implied warranty of
   9 #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10 #  GNU General Public License for more details.
  11 #
  12 #  You should have received a copy of the GNU General Public License
  13 #  along with this program; if not, write to the Free Software
  14 #  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  15 #
  16
  17 #
  18 # Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
  19 # Copyright 2008, 2012 Richard Lowe
  20 # Copyright 2014 Garrett D'Amore <garrett@damore.org>
  21 # Copyright (c) 2014, Joyent, Inc.
  22 # Copyright (c) 2015, 2016 by Delphix. All rights reserved.
  23 #
  24
  25 import getopt
  26 import os
  27 import re
  28 import subprocess
  29 import sys
  30 import tempfile
  31
  32 from cStringIO import StringIO
  33
  34 #
  35 # Adjust the load path based on our location and the version of python into
  36 # which it is being loaded.  This assumes the normal onbld directory
  37 # structure, where we are in bin/ and the modules are in
  38 # lib/python(version)?/onbld/Scm/.  If that changes so too must this.
  39 #
  40 sys.path.insert(1, os.path.join(os.path.dirname(__file__), "..", "lib",
  41                                 "python%d.%d" % sys.version_info[:2]))
  42
  43 #
  44 # Add the relative path to usr/src/tools to the load path, such that when run
  45 # from the source tree we use the modules also within the source tree.
  46 #
  47 sys.path.insert(2, os.path.join(os.path.dirname(__file__), ".."))
  48
  49 from onbld.Scm import Ignore
  50 from onbld.Checks import Comments, Copyright, CStyle, HdrChk
  51 from onbld.Checks import JStyle, Keywords, ManLint, Mapfile, SpellCheck
  52
  53
  54 class GitError(Exception):
  55     pass
  56
  57 def git(command):
  58     """Run a command and return a stream containing its stdout (and write its
  59     stderr to its stdout)"""
  60
  61     if type(command) != list:
  62         command = command.split()
  63
  64     command = ["git"] + command
  65
  66     try:
  67         tmpfile = tempfile.TemporaryFile(prefix="git-nits")
  68     except EnvironmentError, e:
  69         raise GitError("Could not create temporary file: %s\n" % e)
  70
  71     try:
  72         p = subprocess.Popen(command,
  73                              stdout=tmpfile,
  74                              stderr=subprocess.PIPE)
  75     except OSError, e:
  76         raise GitError("could not execute %s: %s\n" (command, e))
  77
  78     err = p.wait()
  79     if err != 0:
  80         raise GitError(p.stderr.read())
  81
  82     tmpfile.seek(0)
  83     return tmpfile
  84
  85
  86 def git_root():
  87     """Return the root of the current git workspace"""
  88
  89     p = git('rev-parse --git-dir')
  90
  91     if not p:
  92         sys.stderr.write("Failed finding git workspace\n")
  93         sys.exit(err)
  94
  95     return os.path.abspath(os.path.join(p.readlines()[0],
  96                                         os.path.pardir))
  97
  98
  99 def git_branch():
 100     """Return the current git branch"""
 101
 102     p = git('branch')
 103
 104     if not p:
 105         sys.stderr.write("Failed finding git branch\n")
 106         sys.exit(err)
 107
 108     for elt in p:
 109         if elt[0] == '*':
 110             if elt.endswith('(no branch)'):
 111                 return None
 112             return elt.split()[1]
 113
 114
 115 def git_parent_branch(branch):
 116     """Return the parent of the current git branch.
 117
 118     If this branch tracks a remote branch, return the remote branch which is
 119     tracked.  If not, default to origin/master."""
 120
 121     if not branch:
 122         return None
 123
 124     p = git("for-each-ref --format=%(refname:short) %(upstream:short) " +
 125             "refs/heads/")
 126
 127     if not p:
 128         sys.stderr.write("Failed finding git parent branch\n")
 129         sys.exit(err)
 130
 131     for line in p:
 132         # Git 1.7 will leave a ' ' trailing any non-tracking branch
 133         if ' ' in line and not line.endswith(' \n'):
 134             local, remote = line.split()
 135             if local == branch:
 136                 return remote
 137     return 'origin/master'
 138
 139
 140 def git_comments(parent):
 141     """Return a list of any checkin comments on this git branch"""
 142
 143     p = git('log --pretty=tformat:%%B:SEP: %s..' % parent)
 144
 145     if not p:
 146         sys.stderr.write("Failed getting git comments\n")
 147         sys.exit(err)
 148
 149     return [x.strip() for x in p.readlines() if x != ':SEP:\n']
 150
 151
 152 def git_file_list(parent, paths=None):
 153     """Return the set of files which have ever changed on this branch.
 154
 155     NB: This includes files which no longer exist, or no longer actually
 156     differ."""
 157
 158     p = git("log --name-only --pretty=format: %s.. %s" %
 159              (parent, ' '.join(paths)))
 160
 161     if not p:
 162         sys.stderr.write("Failed building file-list from git\n")
 163         sys.exit(err)
 164
 165     ret = set()
 166     for fname in p:
 167         if fname and not fname.isspace() and fname not in ret:
 168             ret.add(fname.strip())
 169
 170     return ret
 171
 172
 173 def not_check(root, cmd):
 174     """Return a function which returns True if a file given as an argument
 175     should be excluded from the check named by 'cmd'"""
 176
 177     ignorefiles = filter(os.path.exists,
 178                          [os.path.join(root, ".git", "%s.NOT" % cmd),
 179                           os.path.join(root, "exception_lists", cmd)])
 180     return Ignore.ignore(root, ignorefiles)
 181
 182
 183 def gen_files(root, parent, paths, exclude):
 184     """Return a function producing file names, relative to the current
 185     directory, of any file changed on this branch (limited to 'paths' if
 186     requested), and excluding files for which exclude returns a true value """
 187
 188     # Taken entirely from Python 2.6's os.path.relpath which we would use if we
 189     # could.
 190     def relpath(path, here):
 191         c = os.path.abspath(os.path.join(root, path)).split(os.path.sep)
 192         s = os.path.abspath(here).split(os.path.sep)
 193         l = len(os.path.commonprefix((s, c)))
 194         return os.path.join(*[os.path.pardir] * (len(s)-l) + c[l:])
 195
 196     def ret(select=None):
 197         if not select:
 198             select = lambda x: True
 199
 200         for f in git_file_list(parent, paths):
 201             f = relpath(f, '.')
 202             try:
 203                 res = git("diff %s HEAD %s" % (parent, f))
 204             except GitError, e:
 205                 # This ignores all the errors that can be thrown. Usually, this means
 206                 # that git returned non-zero because the file doesn't exist, but it
 207                 # could also fail if git can't create a new file or it can't be
 208                 # executed.  Such errors are 1) unlikely, and 2) will be caught by other
 209                 # invocations of git().
 210                 continue
 211             empty = not res.readline()
 212             if (os.path.exists(f) and not empty and select(f) and not exclude(f)):
 213                 yield f
 214     return ret
 215
 216
 217 def comchk(root, parent, flist, output):
 218     output.write("Comments:\n")
 219
 220     return Comments.comchk(git_comments(parent), check_db=True,
 221                            output=output)
 222
 223
 224 def mapfilechk(root, parent, flist, output):
 225     ret = 0
 226
 227     # We are interested in examining any file that has the following
 228     # in its final path segment:
 229     #    - Contains the word 'mapfile'
 230     #    - Begins with 'map.'
 231     #    - Ends with '.map'
 232     # We don't want to match unless these things occur in final path segment
 233     # because directory names with these strings don't indicate a mapfile.
 234     # We also ignore files with suffixes that tell us that the files
 235     # are not mapfiles.
 236     MapfileRE = re.compile(r'.*((mapfile[^/]*)|(/map\.+[^/]*)|(\.map))$',
 237         re.IGNORECASE)
 238     NotMapSuffixRE = re.compile(r'.*\.[ch]$', re.IGNORECASE)
 239
 240     output.write("Mapfile comments:\n")
 241
 242     for f in flist(lambda x: MapfileRE.match(x) and not
 243                    NotMapSuffixRE.match(x)):
 244         fh = open(f, 'r')
 245         ret |= Mapfile.mapfilechk(fh, output=output)
 246         fh.close()
 247     return ret
 248
 249
 250 def copyright(root, parent, flist, output):
 251     ret = 0
 252     output.write("Copyrights:\n")
 253     for f in flist():
 254         fh = open(f, 'r')
 255         ret |= Copyright.copyright(fh, output=output)
 256         fh.close()
 257     return ret
 258
 259
 260 def hdrchk(root, parent, flist, output):
 261     ret = 0
 262     output.write("Header format:\n")
 263     for f in flist(lambda x: x.endswith('.h')):
 264         fh = open(f, 'r')
 265         ret |= HdrChk.hdrchk(fh, lenient=True, output=output)
 266         fh.close()
 267     return ret
 268
 269
 270 def cstyle(root, parent, flist, output):
 271     ret = 0
 272     output.write("C style:\n")
 273     for f in flist(lambda x: x.endswith('.c') or x.endswith('.h')):
 274         fh = open(f, 'r')
 275         ret |= CStyle.cstyle(fh, output=output, picky=True,
 276                              check_posix_types=True,
 277                              check_continuation=True)
 278         fh.close()
 279     return ret
 280
 281
 282 def jstyle(root, parent, flist, output):
 283     ret = 0
 284     output.write("Java style:\n")
 285     for f in flist(lambda x: x.endswith('.java')):
 286         fh = open(f, 'r')
 287         ret |= JStyle.jstyle(fh, output=output, picky=True)
 288         fh.close()
 289     return ret
 290
 291
 292 def manlint(root, parent, flist, output):
 293     ret = 0
 294     output.write("Man page format/spelling:\n")
 295     ManfileRE = re.compile(r'.*\.[0-9][a-z]*$', re.IGNORECASE)
 296     for f in flist(lambda x: ManfileRE.match(x)):
 297         fh = open(f, 'r')
 298         ret |= ManLint.manlint(fh, output=output, picky=True)
 299         ret |= SpellCheck.spellcheck(fh, output=output)
 300         fh.close()
 301     return ret
 302
 303 def keywords(root, parent, flist, output):
 304     ret = 0
 305     output.write("SCCS Keywords:\n")
 306     for f in flist():
 307         fh = open(f, 'r')
 308         ret |= Keywords.keywords(fh, output=output)
 309         fh.close()
 310     return ret
 311
 312
 313 def run_checks(root, parent, cmds, paths='', opts={}):
 314     """Run the checks given in 'cmds', expected to have well-known signatures,
 315     and report results for any which fail.
 316
 317     Return failure if any of them did.
 318
 319     NB: the function name of the commands passed in is used to name the NOT
 320     file which excepts files from them."""
 321
 322     ret = 0
 323
 324     for cmd in cmds:
 325         s = StringIO()
 326
 327         exclude = not_check(root, cmd.func_name)
 328         result = cmd(root, parent, gen_files(root, parent, paths, exclude),
 329                      output=s)
 330         ret |= result
 331
 332         if result != 0:
 333             print s.getvalue()
 334
 335     return ret
 336
 337
 338 def nits(root, parent, paths):
 339     cmds = [copyright,
 340             cstyle,
 341             hdrchk,
 342             jstyle,
 343             keywords,
 344             manlint,
 345             mapfilechk]
 346     run_checks(root, parent, cmds, paths)
 347
 348
 349 def pbchk(root, parent, paths):
 350     cmds = [comchk,
 351             copyright,
 352             cstyle,
 353             hdrchk,
 354             jstyle,
 355             keywords,
 356             manlint,
 357             mapfilechk]
 358     run_checks(root, parent, cmds)
 359
 360
 361 def main(cmd, args):
 362     parent_branch = None
 363
 364     try:
 365         opts, args = getopt.getopt(args, 'b:')
 366     except getopt.GetoptError, e:
 367         sys.stderr.write(str(e) + '\n')
 368         sys.stderr.write("Usage: %s [-b branch] [path...]\n" % cmd)
 369         sys.exit(1)
 370
 371     for opt, arg in opts:
 372         if opt == '-b':
 373             parent_branch = arg
 374
 375     if not parent_branch:
 376         parent_branch = git_parent_branch(git_branch())
 377
 378     func = nits
 379     if cmd == 'git-pbchk':
 380         func = pbchk
 381         if args:
 382             sys.stderr.write("only complete workspaces may be pbchk'd\n");
 383             sys.exit(1)
 384
 385     func(git_root(), parent_branch, args)
 386
 387 if __name__ == '__main__':
 388     try:
 389         main(os.path.basename(sys.argv[0]), sys.argv[1:])
 390     except GitError, e:
 391         sys.stderr.write("failed to run git:\n %s\n" % str(e))
 392         sys.exit(1)