rtems-libbsd/freebsd-to-rtems.py

#! /usr/bin/env python
#
#  Copyright (c) 2015-2016 Chris Johns <chrisj@rtems.org>. All rights reserved.
#
#  Copyright (c) 2009-2015 embedded brains GmbH.  All rights reserved.
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#  Copyright (c) 2012 OAR Corporation. All rights reserved.
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#  modification, are permitted provided that the following conditions
#  are met:
#  1. Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
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# FreeBSD: http://svn.freebsd.org/base/releng/8.2/sys (revision 222485)

from __future__ import print_function

import os
import sys
import getopt

import builder
import waf_generator
import libbsd

isForward = True
isEarlyExit = False
isOnlyBuildScripts = False

def usage():
    print("freebsd-to-rtems.py [args]")
    print("  -?|-h|--help      print this and exit")
    print("  -d|--dry-run      run program but no modifications")
    print("  -D|--diff         provide diff of files between trees")
    print("  -e|--early-exit   evaluate arguments, print results, and exit")
    print("  -m|--makefile     Warning: depreciated and will be removed ")
    print("  -b|--buildscripts just generate the build scripts")
    print("  -R|--reverse      default FreeBSD -> RTEMS, reverse that")
    print("  -r|--rtems        RTEMS Libbsd directory (default: '.')")
    print("  -f|--freebsd      FreeBSD SVN directory (default: 'freebsd-org')")
    print("  -v|--verbose      enable verbose output mode")

# Parse the arguments
def parseArguments():
    global isForward, isEarlyExit
    global isOnlyBuildScripts
    try:
        opts, args = getopt.getopt(sys.argv[1:],
                                   "?hdDembRr:f:v",
                                   [ "help",
                                     "help",
                                     "dry-run"
                                     "diff"
                                     "early-exit"
                                     "makefile"
                                     "buildscripts"
                                     "reverse"
                                     "rtems="
                                     "freebsd="
                                     "verbose" ])
    except getopt.GetoptError as err:
        # print help information and exit:
        print(str(err)) # will print something like "option -a not recognized"
        usage()
        sys.exit(2)
    for o, a in opts:
        if o in ("-v", "--verbose"):
            builder.isVerbose = True
        elif o in ("-h", "--help", "-?"):
            usage()
            sys.exit()
        elif o in ("-d", "--dry-run"):
            builder.isDryRun = True
        elif o in ("-D", "--diff"):
            builder.isDiffMode = True
        elif o in ("-e", "--early-exit"):
            isEarlyExit = True
        elif o in ("-b", "--buildscripts") or o in ("-m", "--makefile"):
            isOnlyBuildScripts = True
        elif o in ("-R", "--reverse"):
            isForward = False
        elif o in ("-r", "--rtems"):
            builder.RTEMS_DIR = a
        elif o in ("-f", "--freebsd"):
            builder.FreeBSD_DIR = a
        else:
            assert False, "unhandled option"

parseArguments()

print("Verbose:                     " + ("no", "yes")[builder.isVerbose])
print("Dry Run:                     " + ("no", "yes")[builder.isDryRun])
print("Diff Mode Enabled:           " + ("no", "yes")[builder.isDiffMode])
print("Only Generate Build Scripts: " + ("no", "yes")[isOnlyBuildScripts])
print("RTEMS Libbsd Directory:      " + builder.RTEMS_DIR)
print("FreeBSD SVN Directory:       " + builder.FreeBSD_DIR)
print("Direction:                   " + ("reverse", "forward")[isForward])

# Check directory argument was set and exist
def wasDirectorySet(desc, path):
    if path == "not_set":
        print("error:" + desc + " Directory was not specified on command line")
        sys.exit(2)

    if os.path.isdir( path ) != True:
        print("error:" + desc + " Directory (" + path + ") does not exist")
        sys.exit(2)

# Were RTEMS and FreeBSD directories specified
wasDirectorySet( "RTEMS", builder.RTEMS_DIR )
wasDirectorySet( "FreeBSD", builder.FreeBSD_DIR )

# Are we generating or reverting?
if isForward == True:
    print("Forward from FreeBSD GIT into ", builder.RTEMS_DIR)
else:
    print("Reverting from ", builder.RTEMS_DIR)
    if isOnlyBuildScripts == True:
        print("error: Build Script generation and Reverse are contradictory")
        sys.exit(2)

if isEarlyExit == True:
    print("Early exit at user request")
    sys.exit(0)

try:
    waf_gen = waf_generator.ModuleManager()

    libbsd.sources(waf_gen)

    # Perform the actual file manipulation
    if isForward:
        if not isOnlyBuildScripts:
            waf_gen.copyFromFreeBSDToRTEMS()
        waf_gen.generate(libbsd.rtems_version())
    else:
        waf_gen.copyFromRTEMSToFreeBSD()
    builder.changedFileSummary()
except IOError as ioe:
    print('error: %s' % (ioe))