Replaced many exit(1)s with exceptions

inclement · inclement · commit ccb225a9ebed · 2018-11-18T15:54:51.000Z
diff --git a/pythonforandroid/archs.py b/pythonforandroid/archs.py
@@ -3,8 +3,8 @@
 import sys
 from distutils.spawn import find_executable
 
-from pythonforandroid.logger import warning
 from pythonforandroid.recipe import Recipe
+from pythonforandroid.util import BuildInterruptingException
 
 
 class Arch(object):
@@ -86,11 +86,11 @@ def get_env(self, with_flags_in_cc=True):
             command_prefix=command_prefix), path=environ['PATH'])
         if cc is None:
             print('Searching path are: {!r}'.format(environ['PATH']))
-            warning('Couldn\'t find executable for CC. This indicates a '
-                    'problem locating the {} executable in the Android '
-                    'NDK, not that you don\'t have a normal compiler '
-                    'installed. Exiting.')
-            exit(1)
+            raise BuildInterruptingException(
+                'Couldn\'t find executable for CC. This indicates a '
+                'problem locating the {} executable in the Android '
+                'NDK, not that you don\'t have a normal compiler '
+                'installed. Exiting.')
 
         if with_flags_in_cc:
             env['CC'] = '{ccache}{command_prefix}-gcc {cflags}'.format(
diff --git a/pythonforandroid/bdistapk.py b/pythonforandroid/bdistapk.py
@@ -73,7 +73,6 @@ def finalize_options(self):
             sys.argv.append('--arch={}'.format(arch))
 
     def run(self):
-
         self.prepare_build_dir()
 
         from pythonforandroid.toolchain import main
diff --git a/pythonforandroid/build.py b/pythonforandroid/build.py
@@ -9,9 +9,8 @@
 import re
 import sh
 
-from pythonforandroid.util import (ensure_dir, current_directory)
-from pythonforandroid.logger import (info, warning, error, info_notify,
-                                     Err_Fore, info_main, shprint)
+from pythonforandroid.util import (ensure_dir, current_directory, BuildInterruptingException)
+from pythonforandroid.logger import (info, warning, info_notify, info_main, shprint)
 from pythonforandroid.archs import ArchARM, ArchARMv7_a, ArchAarch_64, Archx86
 from pythonforandroid.recipe import Recipe
 
@@ -223,8 +222,7 @@ def prepare_build_environment(self,
                         'maintain your own SDK download.')
                 sdk_dir = possible_dirs[0]
         if sdk_dir is None:
-            warning('Android SDK dir was not specified, exiting.')
-            exit(1)
+            raise BuildInterruptingException('Android SDK dir was not specified, exiting.')
         self.sdk_dir = realpath(sdk_dir)
 
         # Check what Android API we're using
@@ -243,11 +241,11 @@ def prepare_build_environment(self,
         self.android_api = android_api
 
         if self.android_api >= 21 and self.archs[0].arch == 'armeabi':
-            error('Asked to build for armeabi architecture with API '
-                  '{}, but API 21 or greater does not support armeabi'.format(
-                      self.android_api))
-            error('You probably want to build with --arch=armeabi-v7a instead')
-            exit(1)
+            raise BuildInterruptingException(
+                'Asked to build for armeabi architecture with API '
+                '{}, but API 21 or greater does not support armeabi'.format(
+                    self.android_api),
+                instructions='You probably want to build with --arch=armeabi-v7a instead')
 
         if exists(join(sdk_dir, 'tools', 'bin', 'avdmanager')):
             avdmanager = sh.Command(join(sdk_dir, 'tools', 'bin', 'avdmanager'))
@@ -256,9 +254,9 @@ def prepare_build_environment(self,
             android = sh.Command(join(sdk_dir, 'tools', 'android'))
             targets = android('list').stdout.decode('utf-8').split('\n')
         else:
-            error('Could not find `android` or `sdkmanager` binaries in '
-                  'Android SDK. Exiting.')
-            exit(1)
+            raise BuildInterruptingException(
+                'Could not find `android` or `sdkmanager` binaries in Android SDK',
+                instructions='Make sure the path to the Android SDK is correct')
         apis = [s for s in targets if re.match(r'^ *API level: ', s)]
         apis = [re.findall(r'[0-9]+', s) for s in apis]
         apis = [int(s[0]) for s in apis if s]
@@ -268,10 +266,9 @@ def prepare_build_environment(self,
             info(('Requested API target {} is available, '
                   'continuing.').format(android_api))
         else:
-            warning(('Requested API target {} is not available, install '
-                     'it with the SDK android tool.').format(android_api))
-            warning('Exiting.')
-            exit(1)
+            raise BuildInterruptingException(
+                ('Requested API target {} is not available, install '
+                 'it with the SDK android tool.').format(android_api))
 
         # Find the Android NDK
         # Could also use ANDROID_NDK, but doesn't look like many tools use this
@@ -304,8 +301,7 @@ def prepare_build_environment(self,
                         'maintain your own NDK download.')
                 ndk_dir = possible_dirs[0]
         if ndk_dir is None:
-            warning('Android NDK dir was not specified, exiting.')
-            exit(1)
+            raise BuildInterruptingException('Android NDK dir was not specified')
         self.ndk_dir = realpath(ndk_dir)
 
         # Find the NDK version, and check it against what the NDK dir
@@ -366,11 +362,11 @@ def prepare_build_environment(self,
         self.ndk_api = ndk_api
 
         if self.ndk_api > self.android_api:
-            error('Target NDK API is {}, higher than the target Android API {}.'.format(
-                self.ndk_api, self.android_api))
-            error('The NDK API is a minimum supported API number and must be lower '
-                  'than the target Android API')
-            exit(1)
+            raise BuildInterruptingException(
+                'Target NDK API is {}, higher than the target Android API {}.'.format(
+                    self.ndk_api, self.android_api),
+                instructions=('The NDK API is a minimum supported API number and must be lower '
+                              'than the target Android API'))
 
         info('Using {} NDK {}'.format(self.ndk.capitalize(), self.ndk_ver))
 
@@ -398,8 +394,7 @@ def prepare_build_environment(self,
                 self.cython = cython
                 break
         else:
-            error('No cython binary found. Exiting.')
-            exit(1)
+            raise BuildInterruptingException('No cython binary found.')
         if not self.cython:
             ok = False
             warning("Missing requirement: cython is not installed")
@@ -473,9 +468,8 @@ def prepare_build_environment(self,
                     executable))
 
         if not ok:
-            error('{}python-for-android cannot continue; aborting{}'.format(
-                Err_Fore.RED, Err_Fore.RESET))
-            sys.exit(1)
+            raise BuildInterruptingException(
+                'python-for-android cannot continue due to the missing executables above')
 
     def __init__(self):
         super(Context, self).__init__()
@@ -522,8 +516,7 @@ def set_archs(self, arch_names):
                 new_archs.add(match)
         self.archs = list(new_archs)
         if not self.archs:
-            warning('Asked to compile for no Archs, so failing.')
-            exit(1)
+            raise BuildInterruptingException('Asked to compile for no Archs, so failing.')
         info('Will compile for the following archs: {}'.format(
             ', '.join([arch.arch for arch in self.archs])))
 
diff --git a/pythonforandroid/distribution.py b/pythonforandroid/distribution.py
@@ -2,9 +2,8 @@
 import glob
 import json
 
-from pythonforandroid.logger import (info, info_notify, warning,
-                                     Err_Style, Err_Fore, error)
-from pythonforandroid.util import current_directory
+from pythonforandroid.logger import (info, info_notify, Err_Style, Err_Fore)
+from pythonforandroid.util import current_directory, BuildInterruptingException
 
 
 class Distribution(object):
@@ -124,17 +123,16 @@ def get_distribution(cls, ctx, name=None, recipes=[],
         # then the existing dist is incompatible with the requested
         # configuration and the build cannot continue
         if name_match_dist is not None:
-            error('Asked for dist with name {name} with recipes ({req_recipes}) and '
-                  'NDK API {req_ndk_api}, but a dist '
-                  'with this name already exists and has either incompatible recipes '
-                  '({dist_recipes}) or NDK API {dist_ndk_api}'.format(
-                      name=name,
-                      req_ndk_api=ndk_api,
-                      dist_ndk_api=name_match_dist.ndk_api,
-                      req_recipes=', '.join(recipes),
-                      dist_recipes=', '.join(name_match_dist.recipes)))
-            error('No compatible dist found, so exiting.')
-            exit(1)
+            raise BuildInterruptingException(
+                'Asked for dist with name {name} with recipes ({req_recipes}) and '
+                'NDK API {req_ndk_api}, but a dist '
+                'with this name already exists and has either incompatible recipes '
+                '({dist_recipes}) or NDK API {dist_ndk_api}'.format(
+                    name=name,
+                    req_ndk_api=ndk_api,
+                    dist_ndk_api=name_match_dist.ndk_api,
+                    req_recipes=', '.join(recipes),
+                    dist_recipes=', '.join(name_match_dist.recipes)))
 
         # If we got this far, we need to build a new dist
         dist = Distribution(ctx)
@@ -158,9 +156,9 @@ def get_distribution(cls, ctx, name=None, recipes=[],
     def get_distributions(cls, ctx, extra_dist_dirs=[]):
         '''Returns all the distributions found locally.'''
         if extra_dist_dirs:
-            warning('extra_dist_dirs argument to get_distributions '
-                    'is not yet implemented')
-            exit(1)
+            raise BuildInterruptingException(
+                'extra_dist_dirs argument to get_distributions '
+                'is not yet implemented')
         dist_dir = ctx.dist_dir
         folders = glob.glob(join(dist_dir, '*'))
         for dir in extra_dist_dirs:
diff --git a/pythonforandroid/graph.py b/pythonforandroid/graph.py
@@ -1,10 +1,10 @@
 from copy import deepcopy
 from itertools import product
-from sys import exit
 
-from pythonforandroid.logger import (info, warning, error)
+from pythonforandroid.logger import (info, warning)
 from pythonforandroid.recipe import Recipe
 from pythonforandroid.bootstrap import Bootstrap
+from pythonforandroid.util import BuildInterruptingException
 
 
 class RecipeOrder(dict):
@@ -133,11 +133,10 @@ def get_recipe_order_and_bootstrap(ctx, names, bs=None):
                     key=lambda order: -('python2' in order) - ('sdl2' in order))
 
     if not orders:
-        error('Didn\'t find any valid dependency graphs.')
-        error('This means that some of your requirements pull in '
-              'conflicting dependencies.')
-        error('Exiting.')
-        exit(1)
+        raise BuildInterruptingException(
+            'Didn\'t find any valid dependency graphs. This means that some of your '
+            'requirements pull in conflicting dependencies.')
+
     # It would be better to check against possible orders other
     # than the first one, but in practice clashes will be rare,
     # and can be resolved by specifying more parameters
diff --git a/pythonforandroid/recipe.py b/pythonforandroid/recipe.py
@@ -16,8 +16,9 @@
     from urlparse import urlparse
 except ImportError:
     from urllib.parse import urlparse
-from pythonforandroid.logger import (logger, info, warning, error, debug, shprint, info_main)
-from pythonforandroid.util import (urlretrieve, current_directory, ensure_dir)
+from pythonforandroid.logger import (logger, info, warning, debug, shprint, info_main)
+from pythonforandroid.util import (urlretrieve, current_directory, ensure_dir,
+                                   BuildInterruptingException)
 
 # this import is necessary to keep imp.load_source from complaining :)
 if PY2:
@@ -582,8 +583,8 @@ class IncludedFilesBehaviour(object):
 
     def prepare_build_dir(self, arch):
         if self.src_filename is None:
-            print('IncludedFilesBehaviour failed: no src_filename specified')
-            exit(1)
+            raise BuildInterruptingException(
+                'IncludedFilesBehaviour failed: no src_filename specified')
         shprint(sh.rm, '-rf', self.get_build_dir(arch))
         shprint(sh.cp, '-a', join(self.get_recipe_dir(), self.src_filename),
                 self.get_build_dir(arch))
@@ -1051,9 +1052,9 @@ def __init__(self, *args, **kwargs):
     def prebuild_arch(self, arch):
         super(TargetPythonRecipe, self).prebuild_arch(arch)
         if self.from_crystax and self.ctx.ndk != 'crystax':
-            error('The {} recipe can only be built when '
-                  'using the CrystaX NDK. Exiting.'.format(self.name))
-            exit(1)
+            raise BuildInterruptingException(
+                'The {} recipe can only be built when '
+                'using the CrystaX NDK. Exiting.'.format(self.name))
         self.ctx.python_recipe = self
 
     def include_root(self, arch):
diff --git a/pythonforandroid/recipes/python3/__init__.py b/pythonforandroid/recipes/python3/__init__.py
@@ -1,7 +1,7 @@
 from pythonforandroid.recipe import TargetPythonRecipe
 from pythonforandroid.toolchain import shprint, current_directory
-from pythonforandroid.logger import logger, info, error
-from pythonforandroid.util import ensure_dir, walk_valid_filens
+from pythonforandroid.logger import logger, info
+from pythonforandroid.util import ensure_dir, walk_valid_filens, BuildInterruptingException
 from os.path import exists, join, dirname
 from os import environ
 import glob
@@ -45,9 +45,9 @@ class Python3Recipe(TargetPythonRecipe):
 
     def build_arch(self, arch):
         if self.ctx.ndk_api < self.MIN_NDK_API:
-            error('Target ndk-api is {}, but the python3 recipe supports only {}+'.format(
-                self.ctx.ndk_api, self.MIN_NDK_API))
-            exit(1)
+            raise BuildInterruptingException(
+                'Target ndk-api is {}, but the python3 recipe supports only {}+'.format(
+                    self.ctx.ndk_api, self.MIN_NDK_API))
 
         recipe_build_dir = self.get_build_dir(arch.arch)
 
diff --git a/pythonforandroid/toolchain.py b/pythonforandroid/toolchain.py
@@ -9,6 +9,7 @@
 from __future__ import print_function
 from pythonforandroid import __version__
 from pythonforandroid.build import DEFAULT_NDK_API, DEFAULT_ANDROID_API
+from pythonforandroid.util import BuildInterruptingException, handle_build_exception
 
 
 def check_python_dependencies():
@@ -58,8 +59,7 @@ def check_python_dependencies():
                 ok = False
 
     if not ok:
-        print('python-for-android is exiting due to the errors above.')
-        exit(1)
+        print('python-for-android is exiting due to the errors logged above')
 
 
 check_python_dependencies()
@@ -85,7 +85,7 @@ def check_python_dependencies():
 from pythonforandroid.recipe import Recipe
 from pythonforandroid.logger import (logger, info, warning, setup_color,
                                      Out_Style, Out_Fore,
-                                     info_notify, info_main, shprint, error)
+                                     info_notify, info_main, shprint)
 from pythonforandroid.util import current_directory
 from pythonforandroid.bootstrap import Bootstrap
 from pythonforandroid.distribution import Distribution, pretty_log_dists
@@ -628,7 +628,7 @@ def clean(self, args):
 
         for component in components:
             if component not in component_clean_methods:
-                raise ValueError((
+                raise BuildInterruptingException((
                     'Asked to clean "{}" but this argument is not '
                     'recognised'.format(component)))
             component_clean_methods[component](args)
@@ -725,10 +725,10 @@ def export_dist(self, args):
         ctx = self.ctx
         dist = dist_from_args(ctx, args)
         if dist.needs_build:
-            info('You asked to export a dist, but there is no dist '
-                 'with suitable recipes available. For now, you must '
-                 ' create one first with the create argument.')
-            exit(1)
+            raise BuildInterruptingException(
+                'You asked to export a dist, but there is no dist '
+                'with suitable recipes available. For now, you must '
+                ' create one first with the create argument.')
         if args.symlink:
             shprint(sh.ln, '-s', dist.dist_dir, args.output_dir)
         else:
@@ -821,9 +821,8 @@ def apk(self, args):
                 elif args.build_mode == "release":
                     gradle_task = "assembleRelease"
                 else:
-                    error("Unknown build mode {} for apk()".format(
-                        args.build_mode))
-                    exit(1)
+                    raise BuildInterruptingException(
+                        "Unknown build mode {} for apk()".format(args.build_mode))
                 output = shprint(gradlew, gradle_task, _tail=20,
                                  _critical=True, _env=env)
 
@@ -838,9 +837,9 @@ def apk(self, args):
                 try:
                     ant = sh.Command('ant')
                 except sh.CommandNotFound:
-                    error('Could not find ant binary, please install it '
-                          'and make sure it is in your $PATH.')
-                    exit(1)
+                    raise BuildInterruptingException(
+                        'Could not find ant binary, please install it '
+                        'and make sure it is in your $PATH.')
                 output = shprint(ant, args.build_mode, _tail=20,
                                  _critical=True, _env=env)
                 apk_dir = join(dist.dist_dir, "bin")
@@ -874,7 +873,7 @@ def apk(self, args):
                     apk_file = apks[-1]
                     break
             else:
-                raise ValueError('Couldn\'t find the built APK')
+                raise BuildInterruptingException('Couldn\'t find the built APK')
 
         info_main('# Found APK file: {}'.format(apk_file))
         if apk_add_version:
@@ -1007,7 +1006,10 @@ def build_status(self, _args):
 
 
 def main():
-    ToolchainCL()
+    try:
+        ToolchainCL()
+    except BuildInterruptingException as exc:
+        handle_build_exception(exc)
 
 
 if __name__ == "__main__":
diff --git a/pythonforandroid/util.py b/pythonforandroid/util.py
