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import os
import sys
import subprocess
def getoutput(cmd, cwd='.'):
p = subprocess.Popen(cmd,
shell=True,
stdout=subprocess.PIPE,
cwd=cwd,
)
out, _ = p.communicate()
return out.decode() # will kill us sometimes
def hg(args, cwd='.'):
return getoutput('hg ' + args, cwd).strip()
def version_from_cachefile(root, cachefile=None):
#XXX: for now we ignore root
if not cachefile:
return
#replaces 'with open()' from py2.6
fd = open(cachefile)
fd.readline() # remove the comment
version = None
try:
line = fd.readline()
version_string = line.split(' = ')[1].strip()
version = version_string[1:-1]
except: # any error means invalid cachefile
pass
fd.close()
return version
def version_from_hg_id(root, cachefile=None):
"""stolen logic from mercurials setup.py as well"""
if os.path.isdir(os.path.join(root, '.hg')):
l = hg('id -i -t', root).split()
node = l.pop(0)
for tag in l:
#XXX: find better guess if version-number logic
if tag[0].isdigit():
version = tag
if node[-1] == '+': # propagate the dirty status to the tag
version += '+'
return version
def version_from_hg15_parents(root, cachefile=None):
if os.path.isdir(os.path.join(root, '.hg')):
hgver_out = hg('--version')
hgver_out = hgver_out.splitlines()[0].rstrip(')')
hgver = hgver_out.split('version ')[-1]
if hgver < '1.5':
return version_from_hg_log_with_tags(root)
node = hg('id -i', root)
if node.strip('+') == '000000000000':
return '0.0.dev0-' + node
cmd = 'parents --template "{latesttag} {latesttagdistance}"'
out = hg(cmd, root)
try:
tag, dist = out.split()
if tag == 'null':
tag = '0.0'
return '%s.dev%s-%s' % (tag, dist, node)
except ValueError:
pass # unpacking failed, old hg
def version_from_hg_log_with_tags(root, cachefile=None):
#NOTE: this is only a fallback called from version_from_hg15_parents
if os.path.isdir(os.path.join(root, '.hg')):
node = getoutput('hg id -i', root).strip()
cmd = r'hg log -r %s:0 --template "{tags} \n"'
cmd = cmd % node.rstrip('+')
proc = subprocess.Popen(cmd,
cwd=root,
shell=True,
stdout=subprocess.PIPE,
)
dist = -1 # no revs vs one rev is tricky
for dist, line in enumerate(proc.stdout):
line = line.decode()
tags = [t for t in line.split() if not t.isalpha()]
if tags:
return '%s.dev%s-%s' % (tags[0], dist, node)
return '0.0.dev%s-%s' % (dist + 1, node)
def version_from_hg(root, cachefile=None):
# no .hg means no way to get it
if not os.path.isdir(os.path.join(root, '.hg')):
return
# if id has a tag we are lucky
version_from_id = version_from_hg_id(root)
if version_from_id:
return version_from_id
hgver_out = hg('--version')
hgver_out = hgver_out.splitlines()[0].rstrip(')')
hgver = hgver_out.split('version ')[-1]
if hgver < '1.5':
return version_from_hg_log_with_tags(root)
else:
return version_from_hg15_parents(root)
def _archival_to_version(data):
"""stolen logic from mercurials setup.py"""
if 'tag' in data:
return data['tag']
elif 'latesttag' in data:
return '%(latesttag)s.dev%(latesttagdistance)s-%(node).12s' % data
else:
return data.get('node', '')[:12]
def _data_from_archival(path):
import email
data = email.message_from_file(open(str(path)))
return dict(data.items())
def version_from_archival(root, cachefile=None):
for parent in root, os.path.dirname(root):
archival = os.path.join(parent, '.hg_archival.txt')
if os.path.exists(archival):
data = _data_from_archival(archival)
return _archival_to_version(data)
def version_from_sdist_pkginfo(root, cachefile=None):
pkginfo = os.path.join(root, 'PKG-INFO')
if cachefile is None and os.path.exists(pkginfo):
data = _data_from_archival(pkginfo)
version = data.get('Version')
if version != 'UNKNOWN':
return version
def write_cachefile(path, version):
fd = open(path, 'w')
try:
fd.write('# this file is autogenerated by hgdistver + setup.py\n')
fd.write('version = %r' % version)
finally:
fd.close()
methods = [
version_from_hg,
version_from_cachefile,
version_from_sdist_pkginfo,
version_from_archival,
]
def get_version(cachefile=None, root=None):
if root is None:
root = os.getcwd()
if cachefile is not None:
cachefile = os.path.join(root, cachefile)
try:
version = None
for method in methods:
version = method(root=root, cachefile=cachefile)
if version:
if version.endswith('+'):
import time
version += time.strftime('%Y%m%d')
return version
finally:
if cachefile and version:
write_cachefile(cachefile, version)
if __name__ == '__main__':
print('Guessed Version %s' % (get_version(),))
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