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# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
"""
BitBake 'Fetch' implementations

Classes for obtaining upstream sources for the
BitBake build tools.

"""

# Copyright (C) 2003, 2004  Chris Larson
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Based on functions from the base bb module, Copyright 2003 Holger Schurig

import os
import bb
from   bb import data
from   bb.fetch import Fetch
from   bb.fetch import FetchError

class Perforce(Fetch):
    def supports(self, url, ud, d):
        return ud.type in ['p4']

    def doparse(url,d):
        parm = {}
        path = url.split("://")[1]
        delim = path.find("@");
        if delim != -1:
            (user,pswd,host,port) = path.split('@')[0].split(":")
            path = path.split('@')[1]
        else:
            (host,port) = data.getVar('P4PORT', d).split(':')
            user = ""
            pswd = ""

        if path.find(";") != -1:
            keys=[]
            values=[]
            plist = path.split(';')
            for item in plist:
                if item.count('='):
                    (key,value) = item.split('=')
                    keys.append(key)
                    values.append(value)

            parm = dict(zip(keys,values))
        path = "//" + path.split(';')[0]
        host += ":%s" % (port)
        parm["cset"] = Perforce.getcset(d, path, host, user, pswd, parm)

        return host,path,user,pswd,parm
    doparse = staticmethod(doparse)

    def getcset(d, depot,host,user,pswd,parm):
        p4opt = ""
        if "cset" in parm:
            return parm["cset"];
        if user:
            p4opt += " -u %s" % (user)
        if pswd:
            p4opt += " -P %s" % (pswd)
        if host:
            p4opt += " -p %s" % (host)

        p4date = data.getVar("P4DATE", d, 1)
        if "revision" in parm:
            depot += "#%s" % (parm["revision"])
        elif "label" in parm:
            depot += "@%s" % (parm["label"])
        elif p4date:
            depot += "@%s" % (p4date)

        p4cmd = data.getVar('FETCHCOMMAND_p4', d, 1)
        bb.msg.debug(1, bb.msg.domain.Fetcher, "Running %s%s changes -m 1 %s" % (p4cmd, p4opt, depot))
        p4file = os.popen("%s%s changes -m 1 %s" % (p4cmd, p4opt, depot))
        cset = p4file.readline().strip()
        bb.msg.debug(1, bb.msg.domain.Fetcher, "READ %s" % (cset))
        if not cset:
            return -1

        return cset.split(' ')[1]
    getcset = staticmethod(getcset)

    def localpath(self, url, ud, d):        

        (host,path,user,pswd,parm) = Perforce.doparse(url,d)

        # If a label is specified, we use that as our filename

        if "label" in parm:
            ud.localfile = "%s.tar.gz" % (parm["label"])
            return os.path.join(data.getVar("DL_DIR", d, 1), ud.localfile)

        base = path
        which = path.find('/...')
        if which != -1:
            base = path[:which]

        if base[0] == "/":
            base = base[1:]

        cset = Perforce.getcset(d, path, host, user, pswd, parm)

        ud.localfile = data.expand('%s+%s+%s.tar.gz' % (host,base.replace('/', '.'), cset), d)

        return os.path.join(data.getVar("DL_DIR", d, 1), ud.localfile)

    def go(self, loc, ud, d):
        """
        Fetch urls
        """

        # try to use the tarball stash
        if Fetch.try_mirror(d, ud.localfile):
            bb.msg.debug(1, bb.msg.domain.Fetcher, "%s already exists or was mirrored, skipping perforce checkout." % ud.localpath)
            return

        (host,depot,user,pswd,parm) = Perforce.doparse(loc, d)

        if depot.find('/...') != -1:
            path = depot[:depot.find('/...')]
        else:
            path = depot

        if "module" in parm:
            module = parm["module"]
        else:
            module = os.path.basename(path)

        localdata = data.createCopy(d)
        data.setVar('OVERRIDES', "p4:%s" % data.getVar('OVERRIDES', localdata), localdata)
        data.update_data(localdata)

        # Get the p4 command
        p4opt = ""
        if user:
            p4opt += " -u %s" % (user)

        if pswd:
            p4opt += " -P %s" % (pswd)

        if host:
            p4opt += " -p %s" % (host)

        p4cmd = data.getVar('FETCHCOMMAND', localdata, 1)

        # create temp directory
        bb.msg.debug(2, bb.msg.domain.Fetcher, "Fetch: creating temporary directory")
        bb.mkdirhier(data.expand('${WORKDIR}', localdata))
        data.setVar('TMPBASE', data.expand('${WORKDIR}/oep4.XXXXXX', localdata), localdata)
        tmppipe = os.popen(data.getVar('MKTEMPDIRCMD', localdata, 1) or "false")
        tmpfile = tmppipe.readline().strip()
        if not tmpfile:
            bb.error("Fetch: unable to create temporary directory.. make sure 'mktemp' is in the PATH.")
            raise FetchError(module)

        if "label" in parm:
            depot = "%s@%s" % (depot,parm["label"])
        else:
            cset = Perforce.getcset(d, depot, host, user, pswd, parm)
            depot = "%s@%s" % (depot,cset)

        os.chdir(tmpfile)
        bb.msg.note(1, bb.msg.domain.Fetcher, "Fetch " + loc)
        bb.msg.note(1, bb.msg.domain.Fetcher, "%s%s files %s" % (p4cmd, p4opt, depot))
        p4file = os.popen("%s%s files %s" % (p4cmd, p4opt, depot))

        if not p4file:
            bb.error("Fetch: unable to get the P4 files from %s" % (depot))
            raise FetchError(module)

        count = 0

        for file in p4file: 
            list = file.split()

            if list[2] == "delete":
                continue

            dest = list[0][len(path)+1:]
            where = dest.find("#")

            os.system("%s%s print -o %s/%s %s" % (p4cmd, p4opt, module,dest[:where],list[0]))
            count = count + 1
            
        if count == 0:
            bb.error("Fetch:  No files gathered from the P4 fetch")
            raise FetchError(module)

        myret = os.system("tar -czf %s %s" % (ud.localpath, module))
        if myret != 0:
            try:
                os.unlink(ud.localpath)
            except OSError:
                pass
            raise FetchError(module)
        # cleanup
        os.system('rm -rf %s' % tmpfile)