euscan-ng/pym/euscan/handlers/cpan.py
volpino 1efeee4134 euscan: added simple support to result confidence
Confidence values are meaningless at the moment. Need to fix it.

Signed-off-by: volpino <fox91@anche.no>
2012-05-23 16:44:44 +02:00

137 lines
2.6 KiB
Python

import re
import portage
import urllib2
import json
from euscan import helpers, output
HANDLER_NAME = "cpan"
CONFIDENCE = 100.0
_cpan_package_name_re = re.compile("mirror://cpan/authors/.*/([^/.]*).*")
def can_handle(cpv, url):
return 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 gentoo_mangle_version(up_pv):
pv = ""
if up_pv.count('.') == 1:
digits = 0
for i in range(len(up_pv)):
if digits == 3:
pv += "."
digits = 0
c = up_pv[i]
pv += c
digits += int(c.isdigit())
if c == '.':
digits = 0
else:
pv = up_pv
return helpers.gentoo_mangle_version(pv)
def cpan_trim_version(pv):
pv = re.sub('^[a-zA-Z]+', '', pv)
pv = re.sub('[a-zA-Z]$', '', pv)
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:]
up_pv = cpan_trim_version(up_pv)
return up_pv
def cpan_vercmp(cp, a, b):
try:
return float(a) - float(b)
except:
if a < b:
return -1
else:
return 1
def scan(cpv, url):
cp, ver, rev = portage.pkgsplit(cpv)
pkg = guess_package(cp, url)
orig_url = url
url = 'http://search.cpan.org/api/dist/%s' % pkg
output.einfo("Using: " + 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']
up_pv = cpan_trim_version(up_pv)
pv = gentoo_mangle_version(up_pv)
up_ver = cpan_mangle_version(ver)
if helpers.version_filtered(cp, up_ver, up_pv, cpan_vercmp):
continue
url = 'mirror://cpan/authors/id/%s/%s/%s/%s' % (
version['cpanid'][0],
version['cpanid'][0:1],
version['cpanid'],
version['archive']
)
if url == orig_url:
continue
ret.append((url, pv, HANDLER_NAME, CONFIDENCE))
return ret
def brute_force(cpv, url):
return []