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import re
import portage
import urllib2
import json
from euscan import helpers, output, mangling
HANDLER_NAME = "cpan"
CONFIDENCE = 100
PRIORITY = 90
_cpan_package_name_re = re.compile("mirror://cpan/authors/.*/([^/.]*).*")
def can_handle(pkg, url=None):
return url and url.startswith('mirror://cpan/')
def guess_package(cp, url):
match = _cpan_package_name_re.search(url)
pkg = None
if match:
pkg = match.group(1)
try:
cp, ver, rev = portage.pkgsplit('fake/' + pkg)
except:
pass
cat, pkg = cp.split("/")
return pkg
def mangle_version(up_pv):
if up_pv.startswith('v'):
return up_pv[1:]
# clean
up_pv = up_pv.replace("._", "_") # e.g.: 0.999._002 -> 0.999_002
up_pv = up_pv.replace("_0.", "_") # e.g.: 0.30_0.1 -> 0.30_1
# Detect _rc versions
rc_part = ""
if up_pv.count("_") == 1:
up_pv, rc_part = up_pv.split("_")
# Gentoo creates groups of 3 digits, except for the first digit,
# or when last digit is 0. e.g.: 4.11 -> 4.110.0
splitted = up_pv.split(".")
if len(splitted) == 2: # Split second part is sub-groups
part = splitted.pop()
for i in xrange(0, len(part), 3):
splitted.append(part[i:i + 3])
if len(splitted) == 2: # add last group if it's missing
splitted.append("0")
groups = [splitted[0]]
for part in splitted[1:-1]:
groups.append(part.ljust(3, "0"))
if splitted[-1] == "0":
groups.append(splitted[-1])
else:
groups.append(splitted[-1].ljust(3, "0"))
# if there's a group with leading zeros strip it. e.g.: 002 -> 2
groups = [g.lstrip("0") if g != "0" else g for g in groups]
pv = ".".join(groups)
if rc_part:
pv = "%s_rc%s" % (pv, rc_part)
return pv
def cpan_mangle_version(pv):
pos = pv.find('.')
if pos <= 0:
return pv
up_pv = pv.replace('.', '')
up_pv = up_pv[0:pos] + '.' + up_pv[pos:]
return up_pv
def cpan_vercmp(cp, a, b):
try:
return float(a) - float(b)
except:
return helpers.simple_vercmp(a, b)
def scan_url(pkg, url, options):
cp, ver, rev = portage.pkgsplit(pkg.cpv)
remote_pkg = guess_package(cp, url)
output.einfo("Using CPAN API: %s", remote_pkg)
return scan_pkg(pkg, {'data': remote_pkg})
def scan_pkg(pkg, options):
remote_pkg = options['data']
# Defaults to CPAN mangling rules
if 'versionmangle' not in options:
options['versionmangle'] = ['cpan', 'gentoo']
url = 'http://search.cpan.org/api/dist/%s' % remote_pkg
cp, ver, rev = pkg.cp, pkg.version, pkg.revision
m_ver = cpan_mangle_version(ver)
output.einfo("Using CPAN API: " + url)
try:
fp = helpers.urlopen(url)
except urllib2.URLError:
return []
except IOError:
return []
if not fp:
return []
data = fp.read()
data = json.loads(data)
if 'releases' not in data:
return []
ret = []
for version in data['releases']:
#if version['status'] == 'testing':
# continue
up_pv = version['version']
pv = mangling.mangle_version(up_pv, options)
if up_pv.startswith('v'):
if helpers.version_filtered(cp, ver, pv):
continue
else:
m_pv = cpan_mangle_version(up_pv)
if helpers.version_filtered(cp, m_ver, m_pv, cpan_vercmp):
continue
url = 'mirror://cpan/authors/id/%s/%s/%s/%s' % (
version['cpanid'][0],
version['cpanid'][0:1],
version['cpanid'],
version['archive']
)
url = mangling.mangle_url(url, options)
ret.append((url, pv, HANDLER_NAME, CONFIDENCE))
return ret
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