check-valid-commit.py

#!/usr/bin/env python3

from __future__ importprint_function

importsubprocess
importgetopt
importsys


SSH_USER='bot'
SSH_HOST='localhost'
SSH_PORT=29418
SSH_COMMAND='ssh %s@%s -p %d gerrit approve '% (SSH_USER,
SSH_HOST,
SSH_PORT)
FAILURE_SCORE='--code-review=-2'
FAILURE_MESSAGE='This commit message does not match the standard.' \
+' Please correct the commit message and upload a replacement patch.'
PASS_SCORE='--code-review=0'
PASS_MESSAGE=''


defmain():
change=None
project=None
branch=None
commit=None
patchset=None

try:
opts, _args=getopt.getopt(sys.argv[1:], '',
 ['change=', 'project=', 'branch=',
'commit=', 'patchset='])
exceptgetopt.GetoptErroraserr:
print('Error: %s'% (err))
usage()
sys.exit(-1)

forarg, valueinopts:
ifarg=='--change':
change=value
elifarg=='--project':
project=value
elifarg=='--branch':
branch=value
elifarg=='--commit':
commit=value
elifarg=='--patchset':
patchset=value
else:
print('Error: option %s not recognized'% (arg))
usage()
sys.exit(-1)

ifany(pisNoneforpin [change, project, branch, commit, patchset]):
usage()
sys.exit(-1)

command='git cat-file commit %s'% (commit)
status, output=subprocess.getstatusoutput(command)

ifstatus!=0:
print('Error running \'%s\'. status: %s, output:\n\n%s'%
 (command, status, output))
sys.exit(-1)

commitMessage=output[(output.find('\n\n')+2):]
commitLines=commitMessage.split('\n')

iflen(commitLines) >1andlen(commitLines[1]) !=0:
fail(commit, 'Invalid commit summary. The summary must be '
+'one line followed by a blank line.')

i=0
forlineincommitLines:
i=i+1
iflen(line) >80:
fail(commit, 'Line %d is over 80 characters.'%i)

passes(commit)


defusage():
print('Usage:\n')
print(sys.argv[0] +' --change <change id> --project <project name> '
+'--branch <branch> --commit <sha1> --patchset <patchset id>')


deffail(commit, message):
command=SSH_COMMAND+FAILURE_SCORE+' -m \\\"' \
+_shell_escape(FAILURE_MESSAGE+'\n\n'+message) \
+'\\\" '+commit
subprocess.getstatusoutput(command)
sys.exit(1)


defpasses(commit):
command=SSH_COMMAND+PASS_SCORE+' -m \\\"' \
+_shell_escape(PASS_MESSAGE) +' \\\" '+commit
subprocess.getstatusoutput(command)


def_shell_escape(x):
s=''
forcinx:
ifcin'\n':
s=s+'\\\"$\'\\n\'\\\"'
else:
s=s+c
returns


if__name__=='__main__':
main()