scripts: Refactor build-all.py's build

# Build the kernel for all targets using the Android build environment.

from collections import namedtuple

import glob

from optparse import OptionParser

import os

failed_targets = []

class LogRunner:

    def __init__(self, logname, make_env):

        self.logname = logname

        self.fd = open(logname, 'w')

        self.make_env = make_env

class BuildSequence(namedtuple('BuildSequence', ['log_name', 'short_name', 'steps'])):

    def set_width(self, width):

        self.width = width

    def __enter__(self):

        print "Building:", self.short_name

        self.log = open(self.log_name, 'w')

    def __exit__(self, type, value, traceback):

        self.log.close()

    def run(self):

        self.status = None

        def printer(line):

            text = "[%-*s] %s" % (self.width, self.short_name, line)

            print text

            self.log.write(text)

            self.log.write('\n')

        for step in self.steps:

            st = step.run(printer)

            if st:

                self.status = st

                break

    def run(self, args):

        devnull = open('/dev/null', 'r')

        proc = subprocess.Popen(args, stdin=devnull,

                env=self.make_env,

class BuildTracker:

    """Manages all of the steps necessary to perform a build.  The

    build consists of one or more sequences of steps.  The different

    sequences can be processed independently, while the steps within a

    sequence must be done in order."""

    def __init__(self):

        self.sequence = []

    def add_sequence(self, log_name, short_name, steps):

        self.sequence.append(BuildSequence(log_name, short_name, steps))

    def longest_name(self):

        longest = 0

        for seq in self.sequence:

            longest = max(longest, len(seq.short_name))

        return longest

    def __repr__(self):

        return "BuildTracker(%s)" % self.sequence

    def run(self):

        longest = self.longest_name()

        errors = []

        for seq in self.sequence:

            seq.set_width(longest)

            with seq:

                seq.run()

                if seq.status:

                    errors.append(seq.short_name)

        if errors:

            fail("\n  ".join(["Failed targets:"] + errors))

class PrintStep:

    """A step that just prints a message"""

    def __init__(self, message):

        self.message = message

    def run(self, outp):

        outp(self.message)

class MkdirStep:

    """A step that makes a directory"""

    def __init__(self, direc):

        self.direc = direc

    def run(self, outp):

        outp("mkdir %s" % self.direc)

        os.mkdir(self.direc)

class RmtreeStep:

    def __init__(self, direc):

        self.direc = direc

    def run(self, outp):

        outp("rmtree %s" % self.direc)

        shutil.rmtree(self.direc, ignore_errors=True)

class CopyfileStep:

    def __init__(self, src, dest):

        self.src = src

        self.dest = dest

    def run(self, outp):

        outp("cp %s %s" % (self.src, self.dest))

        shutil.copyfile(self.src, self.dest)

class ExecStep:

    def __init__(self, cmd, **kwargs):

        self.cmd = cmd

        self.kwargs = kwargs

    def run(self, outp):

        outp("exec: %s" % (" ".join(self.cmd),))

        with open('/dev/null', 'r') as devnull:

            proc = subprocess.Popen(self.cmd, stdin=devnull,

                    bufsize=0,

                    stdout=subprocess.PIPE,

                stderr=subprocess.STDOUT)

        count = 0

        # for line in proc.stdout:

        rawfd = proc.stdout.fileno()

                    stderr=subprocess.STDOUT,

                    **self.kwargs)

            stdout = proc.stdout

            while True:

            line = os.read(rawfd, 1024)

                line = stdout.readline()

                if not line:

                    break

            self.fd.write(line)

            self.fd.flush()

            if all_options.verbose:

                sys.stdout.write(line)

                sys.stdout.flush()

            else:

                for i in range(line.count('\n')):

                    count += 1

                    if count == 64:

                        count = 0

                        print

                    sys.stdout.write('.')

                sys.stdout.flush()

        print

                line = line.rstrip('\n')

                outp(line)

            result = proc.wait()

        self.fd.flush()

        return result

            if result != 0:

                return ('error', result)

            else:

                return None

class Builder():

        else:

            self.make_env['ARCH'] = 'arm'

        self.make_env['KCONFIG_NOTIMESTAMP'] = 'true'

        self.log_name = "%s/log-%s.log" % (build_dir, self.name)

    def build(self):

        steps = []

        dest_dir = os.path.join(build_dir, self.name)

        log_name = "%s/log-%s.log" % (build_dir, self.name)

        print 'Building %s in %s log %s' % (self.name, dest_dir, log_name)

        steps.append(PrintStep('Building %s in %s log %s' %

            (self.name, dest_dir, log_name)))

        if not os.path.isdir(dest_dir):

            os.mkdir(dest_dir)

            steps.append(MkdirStep(dest_dir))

        defconfig = self.defconfig

        dotconfig = '%s/.config' % dest_dir

        savedefconfig = '%s/defconfig' % dest_dir

        # shutil.copyfile(defconfig, dotconfig)  # Not really right.

        staging_dir = 'install_staging'

        modi_dir = '%s' % staging_dir

        hdri_dir = '%s/usr' % staging_dir

        shutil.rmtree(os.path.join(dest_dir, staging_dir), ignore_errors=True)

        steps.append(RmtreeStep(os.path.join(dest_dir, staging_dir)))

        with open('/dev/null', 'r') as devnull:

            subprocess.check_call(['make', 'O=%s' % dest_dir,

                self.confname], env=self.make_env,

                stdin=devnull)

        steps.append(ExecStep(['make', 'O=%s' % dest_dir,

            self.confname], env=self.make_env))

        if not all_options.updateconfigs:

            # Build targets can be dependent upon the completion of

                    cmd_line.append(c)

                else:

                    build_targets.append(c)

            build = LogRunner(log_name, self.make_env)

            for t in build_targets:

                result = build.run(cmd_line + [t])

                if result != 0:

                    if all_options.keep_going:

                        failed_targets.append(target)

                        fail_or_error = error

                    else:

                        fail_or_error = fail

                    fail_or_error("Failed to build %s, see %s" %

                            (t, build.logname))

                steps.append(ExecStep(cmd_line + [t], env=self.make_env))

        # Copy the defconfig back.

        if all_options.configs or all_options.updateconfigs:

            with open('/dev/null', 'r') as devnull:

                subprocess.check_call(['make', 'O=%s' % dest_dir,

                    'savedefconfig'], env=self.make_env, stdin=devnull)

            shutil.copyfile(savedefconfig, defconfig)

            steps.append(ExecStep(['make', 'O=%s' % dest_dir,

                'savedefconfig'], env=self.make_env))

            steps.append(CopyfileStep(savedefconfig, defconfig))

        return steps

def update_config(file, str):

    print 'Updating %s with \'%s\'\n' % (file, str)

def build_many(targets):

    print "Building %d target(s)" % len(targets)

    tracker = BuildTracker()

    for target in targets:

        if all_options.updateconfigs:

            update_config(target.defconfig, all_options.updateconfigs)

        target.build()

    if failed_targets:

        fail("\n  ".join(["Failed targets:"] +

            [target.name for target in failed_targets]))

        steps = target.build()

        tracker.add_sequence(target.log_name, target.name, steps)

    tracker.run()

def main():

    global make_command