import re import portage import urllib2 import json from euscan import helpers, output HANDLER_NAME = "cpan" CONFIDENCE = 100.0 PRIORITY = 90 _cpan_package_name_re = re.compile("mirror://cpan/authors/.*/([^/.]*).*") def can_handle(pkg, 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(pkg, url): cp, ver, rev = portage.pkgsplit(pkg.cpv) remote_pkg = guess_package(cp, url) output.einfo("Using CPAN API: %s", remote_pkg) result = scan_remote(pkg, [remote_pkg]) ret = [] for url, pv in result: ret.append((url, pv, HANDLER_NAME, CONFIDENCE)) return ret def scan_remote(pkg, remote_data): remote_pkg = remote_data[0] url = 'http://search.cpan.org/api/dist/%s' % remote_pkg cp, ver, rev = portage.pkgsplit(pkg.cpv) 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'] ) ret.append((url, pv)) return ret