#!/usr/bin/env python
# vi: encoding=utf-8 ts=8 sts=4 sw=4 et

import sys, os, re
import getopt
import subprocess
sys.path.insert(0, os.environ['HOME']+'/pld-ftp-admin/modules')
import ftptree
from common import checkdir
import ftpio

try:
    opts, args = getopt.getopt(sys.argv[1:], 'q', [ "quiet" ])
except getopt.GetoptError:
    print >>sys.stderr, "ERR: options error"
    print >>sys.stderr, "rpmlint.py tree package1 [package2...]"
    sys.exit(1)

quiet = False
for o, a in opts:
    if o == "-q" or o == "--quiet":
        quiet = True

if len(args) < 1:
    print >>sys.stderr, "ERR: missing tree name"
    print >>sys.stderr, "rpmlint.py tree package1 [package2...]"
    sys.exit(1)

treename = args[0]
packages = args[1:]

checkdir(treename)

ftpio.connect('rpmlint')

if not ftpio.lock(treename, True):
    print >>sys.stderr, "ERR: %s tree already locked" % treename
    sys.exit(1)

files = []
try:
    if len(packages) < 1:
        loadall = True
    else:
        loadall = False

    # if no files specified, grab whole tree contents
    tree = ftptree.FtpTree(treename, loadall = loadall)
    if loadall:
        # this is hack, should be a param, not access private .loadedpkgs element
        tree.mark4moving(tree.loadedpkgs)
    else:
        tree.mark4moving(packages)
    files = tree.rpmfiles(debugfiles = False, sourcefiles = False)

except (ftptree.SomeError, KeyboardInterrupt), e:
    # In case of problems we need to unlock the tree before exiting
    ftpio.unlock(treename)
    sys.exit(1)

ftpio.unlock(treename)

class LintPkg:
    def __init__(self, cachedir):
        # for rpmlint stats
        self.packages = self.specfiles = self.errors = self.warnings = 0
        # 1 packages and 0 specfiles checked; 0 errors, 0 warnings.
        self.lintre = re.compile('(?P<packages>\d+) packages and (?P<specfiles>\d+) specfiles checked; (?P<errors>\d+) errors, (?P<warnings>\d+) warnings.')

        self._rpmlint = '/usr/bin/rpmlint'

        self.cachedir = os.path.expanduser(cachedir)
        if not os.path.isdir(self.cachedir):
            os.makedirs(self.cachedir)

    def cachefile(self, file):
        (dirname, filename) = os.path.split(file)
        return os.path.join(self.cachedir, filename+'.txt')

    """
    update stats from cachefile
    """
    def update_stats(self, file):
        cachefile = self.cachefile(file)

        # show last line (that contains status)
        l = (open(cachefile, 'r').readlines())[-1]
        m = self.lintre.match(l)
        if not m:
            return False

        self.packages += int(m.group('packages'))
        self.specfiles += int(m.group('specfiles'))
        self.errors += int(m.group('errors'))
        self.warnings += int(m.group('warnings'))
        return True

    def print_stats(self, file = None):
        if file:
            (dirname, filename) = os.path.split(file)
            print "\r\033[0K%d packages and %d specfiles checked; %d errors, %d warnings. [%s]" % (self.packages, self.specfiles, self.errors, self.warnings, filename),
        else:
            print "\r\033[0K%d packages and %d specfiles checked; %d errors, %d warnings." % (self.packages, self.specfiles, self.errors, self.warnings)
        sys.stdout.flush()

    def rpmlint(self, file):
        cachefile = self.cachefile(file)

        rc = None
        if not os.path.exists(cachefile) or os.stat(file).st_mtime > os.stat(cachefile).st_mtime:
            cmd = [self._rpmlint, file]
            outfd = open(cachefile, 'w')
            try:
                rc = subprocess.call(cmd, stdin = subprocess.PIPE, stdout = outfd, stderr = outfd, close_fds = True)
            except KeyboardInterrupt:
                os.unlink(cachefile)
                raise
            outfd.close()
        if not self.update_stats(file):
            os.unlink(cachefile)
            rc = 1
        return rc == 0

if not quiet:
    print "rpmlint of %d files from %d packages" % (len(files), len(tree.loadedpkgs))
lint = LintPkg("~/tmp/rpmlint")
for file in files:
    lint.rpmlint(file)
    if not quiet:
        lint.print_stats(file)

if not quiet:
    lint.print_stats()