162 lines
3.8 KiB
Python
162 lines
3.8 KiB
Python
import re
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import portage
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import urllib.request, urllib.error, urllib.parse
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import json
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from euscan import helpers, output, mangling
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HANDLER_NAME = "cpan"
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CONFIDENCE = 100
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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=None):
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return url and 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 mangle_version(up_pv):
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if up_pv.startswith("v"):
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return up_pv[1:]
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# clean
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up_pv = up_pv.replace("._", "_") # e.g.: 0.999._002 -> 0.999_002
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up_pv = up_pv.replace("_0.", "_") # e.g.: 0.30_0.1 -> 0.30_1
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# Detect _rc versions
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rc_part = ""
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if up_pv.count("_") == 1:
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up_pv, rc_part = up_pv.split("_")
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# Gentoo creates groups of 3 digits, except for the first digit,
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# or when last digit is 0. e.g.: 4.11 -> 4.110.0
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splitted = up_pv.split(".")
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if len(splitted) == 2: # Split second part is sub-groups
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part = splitted.pop()
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for i in range(0, len(part), 3):
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splitted.append(part[i : i + 3])
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if len(splitted) == 2: # add last group if it's missing
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splitted.append("0")
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groups = [splitted[0]]
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for part in splitted[1:-1]:
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groups.append(part.ljust(3, "0"))
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if splitted[-1] == "0":
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groups.append(splitted[-1])
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else:
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groups.append(splitted[-1].ljust(3, "0"))
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# if there's a group with leading zeros strip it. e.g.: 002 -> 2
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groups = [g.lstrip("0") if g != "0" else g for g in groups]
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pv = ".".join(groups)
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if rc_part:
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pv = "%s_rc%s" % (pv, rc_part)
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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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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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return helpers.simple_vercmp(a, b)
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def scan_url(pkg, url, options):
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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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return scan_pkg(pkg, {"data": remote_pkg})
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def scan_pkg(pkg, options):
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remote_pkg = options["data"]
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# Defaults to CPAN mangling rules
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if "versionmangle" not in options:
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options["versionmangle"] = ["cpan", "gentoo"]
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url = "http://search.cpan.org/api/dist/%s" % remote_pkg
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cp, ver, rev = pkg.cp, pkg.version, pkg.revision
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m_ver = cpan_mangle_version(ver)
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output.einfo("Using CPAN API: " + url)
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try:
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fp = helpers.urlopen(url)
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except urllib.error.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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pv = mangling.mangle_version(up_pv, options)
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if up_pv.startswith("v"):
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if helpers.version_filtered(cp, ver, pv):
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continue
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else:
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m_pv = cpan_mangle_version(up_pv)
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if helpers.version_filtered(cp, m_ver, m_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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url = mangling.mangle_url(url, options)
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ret.append((url, pv, HANDLER_NAME, CONFIDENCE))
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return ret
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