141 lines
2.8 KiB
Python
141 lines
2.8 KiB
Python
import re
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import portage
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import urllib2
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import json
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from euscan import helpers, output
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HANDLER_NAME = "cpan"
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CONFIDENCE = 100.0
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PRIORITY = 90
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_cpan_package_name_re = re.compile("mirror://cpan/authors/.*/([^/.]*).*")
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def can_handle(pkg, url):
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return url.startswith('mirror://cpan/')
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def guess_package(cp, url):
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match = _cpan_package_name_re.search(url)
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pkg = None
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if match:
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pkg = match.group(1)
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try:
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cp, ver, rev = portage.pkgsplit('fake/' + pkg)
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except:
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pass
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cat, pkg = cp.split("/")
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return pkg
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def gentoo_mangle_version(up_pv):
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pv = ""
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if up_pv.count('.') == 1:
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digits = 0
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for i in range(len(up_pv)):
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if digits == 3:
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pv += "."
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digits = 0
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c = up_pv[i]
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pv += c
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digits += int(c.isdigit())
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if c == '.':
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digits = 0
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else:
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pv = up_pv
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return helpers.gentoo_mangle_version(pv)
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def cpan_trim_version(pv):
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pv = re.sub('^[a-zA-Z]+', '', pv)
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pv = re.sub('[a-zA-Z]$', '', pv)
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return pv
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def cpan_mangle_version(pv):
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pos = pv.find('.')
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if pos < 0:
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return pv
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up_pv = pv.replace('.', '')
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up_pv = up_pv[0:pos] + '.' + up_pv[pos:]
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up_pv = cpan_trim_version(up_pv)
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return up_pv
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def cpan_vercmp(cp, a, b):
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try:
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return float(a) - float(b)
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except:
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if a < b:
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return -1
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else:
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return 1
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def scan(pkg, url):
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cp, ver, rev = portage.pkgsplit(pkg.cpv)
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remote_pkg = guess_package(cp, url)
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output.einfo("Using CPAN API: %s", remote_pkg)
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result = scan_remote(pkg, [remote_pkg])
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ret = []
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for url, pv in result:
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ret.append((url, pv, HANDLER_NAME, CONFIDENCE))
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return ret
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def scan_remote(pkg, remote_data):
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remote_pkg = remote_data[0]
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url = 'http://search.cpan.org/api/dist/%s' % remote_pkg
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cp, ver, rev = portage.pkgsplit(pkg.cpv)
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try:
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fp = helpers.urlopen(url)
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except urllib2.URLError:
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return []
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except IOError:
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return []
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if not fp:
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return []
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data = fp.read()
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data = json.loads(data)
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if 'releases' not in data:
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return []
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ret = []
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for version in data['releases']:
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#if version['status'] == 'testing':
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# continue
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up_pv = version['version']
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up_pv = cpan_trim_version(up_pv)
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pv = gentoo_mangle_version(up_pv)
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up_ver = cpan_mangle_version(ver)
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if helpers.version_filtered(cp, up_ver, up_pv, cpan_vercmp):
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continue
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url = 'mirror://cpan/authors/id/%s/%s/%s/%s' % (
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version['cpanid'][0],
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version['cpanid'][0:1],
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version['cpanid'],
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version['archive']
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)
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ret.append((url, pv))
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return ret
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